1. The utility model provides a full-automatic monitoring control centralized lubrication system of hoist walking wheel which characterized in that: comprises an oil tank (1), an electric grease pump (2), a controller (3), an oil distributor (5), an electromagnetic control valve (6) and a plurality of traveling wheel units (10); the electric grease pump (2) is communicated with the oil tank (1), the electric grease pump (2) is communicated with the oil distributor (5) through an oil supply main pipe (4), and each walking wheel unit (10) is communicated with oil outlets corresponding to the oil distributor (5) through two oil supply branch pipes (7); a plurality of electromagnetic control valves (6) which can independently control the oil supply opening or closing of corresponding oil outlets are arranged on the oil distributor (5);

each traveling wheel unit (10) comprises a wheel (10.1) and a wheel shaft (10.3), bearing seats (10.2) are arranged on two sides, corresponding to the wheels (10.1), of a shaft body of the wheel shaft (10.3), bearing chambers are formed by sealing two axial ends of each bearing seat (10.2), bearings are arranged in the bearing chambers, a grease cavity is formed in one side, located in each bearing, of each bearing chamber, an ultrasonic sensor (9) extending into the grease cavity is arranged on the vertical radial upper portion of each bearing seat (10.2), an oil injection nozzle (11) extending into the grease cavity is arranged on the vertical radial lower portion of each bearing seat (10.2), and each oil injection nozzle (11) is communicated with an oil supply branch pipe (7);

the ultrasonic sensor (9) of the bearing chamber on one side of each walking wheel unit (10) is electrically connected with the controller (3), and the controller (3) controls the electromagnetic control valve (6) of the oil distributor (5) corresponding to the bearing chamber to execute corresponding actions; a rotary encoder (8) is further arranged at the shaft end of the wheel shaft (10.3) of each walking wheel unit (10), and the rotary encoder (8) is electrically connected with the controller (3); the controller (3) is electrically connected with the electric grease pump (2).

2. The fully automatic monitoring and control centralized lubricating system for crane walking wheels, according to claim 1, is characterized in that: the oil distributor (5) comprises an upper shell (5.1) and a lower shell (5.2), and the upper shell (5.1) is fixed on the upper part of the lower shell (5.2); the lower shell (5.2) is provided with a liquid inlet channel (5.24) penetrating through two opposite side walls of the lower shell, two end openings of the liquid inlet channel (5.24) are respectively provided with a large joint (5.21) and a plug (5.23), and the large joint (5.21) is communicated with the main oil supply pipe (4); the lower shell (5.2) is provided with at least one liquid outlet channel (5.25) penetrating through the other two opposite side walls of the lower shell, the liquid outlet channel (5.25) is perpendicular to and communicated with the liquid inlet channel (5.24), two end openings of the liquid outlet channel (5.25) are respectively provided with a joint (5.22), the joints (5.22) are communicated with the oil filling nozzle (11) through an oil supply branch pipe (7), the upper shell (5.1) is provided with a plurality of mounting cavities (5.11) extending downwards and communicated with the liquid outlet channel (5.25), and the upper part of the upper shell (2) is provided with a plurality of electromagnetic control valves (6) corresponding to the mounting cavities (5.11).

3. The fully automatic monitoring and control centralized lubricating system for crane walking wheels, according to claim 1, is characterized in that: the electromagnetic control valve (6) comprises an electromagnetic valve coil (6.1), a cylinder body (6.2), a rotary ball valve body (6.3), a rotary ball valve core (6.4) and an oil port control rotating shaft (6.5); the electromagnetic valve coil (6.1) is connected with the upper end face of the rotary ball valve body (6.3) through the cylinder body (6.2), the rotary ball valve core (6.4) is positioned in the rotary ball valve body (6.3), and one end of the oil port control rotating shaft (6.5) extends into the lower end face of the rotary ball valve body (6.3) and is connected with the rotary ball valve core (6.4); a valve rod of the electromagnetic valve coil (6.1) extends into the inner cavity of the cylinder body (6.2) to form a piston structure, and the electromagnetic valve coil (6.1) can drive the valve rod to reciprocate in the cavity of the cylinder body (6.2); the rotary ball valve body (6.3) comprises a shell (6.31), the rotary ball valve core (6.4) comprises a rotary body (6.42), the rotary body (6.42) is fixedly connected with the connecting end of the oil port control rotating shaft (6.5), the rotary body (6.42) is rotatably installed in the shell (6.31), the outer wall of the rotary body (6.42) is in sealing fit with the inner wall of the shell (6.31) to form an annular circular chamber, and a stop block (6.33) which is used for separating and is not communicated with the annular circular chamber is arranged in the annular circular chamber; the outer wall of the rotating body (6.42) is provided with a ball body (6.41), and the ball body (6.41) is in sealed fit with the annular circular chamber and can rotate along the annular circular chamber; the annular round cavity and the inner cavity of the cylinder body (6.2) are provided with oil passages which are communicated with each other, and the oil passages penetrate through the connecting ends of the ball body (6.41), the rotating body (6.42) and the oil port control rotating shaft (6.5).

4. The fully automatic monitoring and control centralized lubricating system for crane walking wheels, according to claim 3, is characterized in that: hydraulic oil is stored in the cylinder (6.2), when the solenoid valve coil (6.1) drives the valve rod to extend out, the valve rod extrudes the hydraulic oil and enables the hydraulic oil to enter the annular circular cavity through the oil passage, under the blocking action of the stop block (6.33), the hydraulic oil pushes the ball body (6.41) to rotate along the annular circular cavity, so that the oil port control rotating shaft (6.5) is driven to rotate, and an oil port channel at the lower end of the shaft body of the oil port control rotating shaft (6.5) is coaxial with the liquid outlet channel (5.25) and is opened; in a similar way, when the solenoid valve coil (6.1) drives the valve rod to retract, hydraulic oil is sucked, under the action of negative pressure, the ball body (6.41) drives the oil port control rotating shaft (6.5) to rotate reversely, and the oil port channel at the lower end of the shaft body of the oil port control rotating shaft (6.5) is vertical to and closed by the liquid outlet channel (5.25).

5. The fully automatic monitoring and control centralized lubricating system for crane walking wheels, according to claim 1, is characterized in that: the axis direction of rotator (6.42) is equipped with square installation logical groove (6.43), and spheroid (6.41) radially is equipped with passageway one (6.45) that extend to in square installation logical groove (6.43), and spheroid (6.41) still is equipped with passageway two (6.46), and the one end and the passageway one (6.45) of passageway two (6.46) communicate, and the other end and the annular circular cavity intercommunication of passageway two (6.46).

6. The fully automatic monitoring and control centralized lubricating system for crane walking wheels as claimed in claim 5, wherein: the oil port control rotating shaft (6.5) comprises a connecting shaft (6.51) and an oil port rotating shaft (6.52), the oil port rotating shaft (6.52) is located in the mounting chamber (5.11), and a square mounting block (6.55) matched with the square mounting through groove (6.43) is arranged in the middle of the shaft body of the connecting shaft (6.51).

7. The fully automatic monitoring and control centralized lubricating system for crane walking wheels as claimed in claim 6, wherein: the end face axis direction of the connecting shaft (6.51) is provided with a first oil duct (6.54) penetrating to the square mounting block (6.55), the first oil duct (6.54) is communicated with the cavity of the barrel body (6.2), the side wall of the square mounting block (6.55) is provided with a second oil duct (6.53) communicated with the first oil duct (6.54), the second oil duct (6.53) corresponds to the first channel (6.45), and the first oil duct (6.54), the second oil duct (6.53), the first channel (6.45) and the second channel (6.46) form an oil path channel.

8. The fully automatic monitoring and control centralized lubricating system for crane walking wheels, according to claim 1, is characterized in that: a first annular arc-shaped groove (6.32) vertical to the axis of the shell (6.31) is arranged in the shell; the outer wall of the rotating body (6.42) is provided with a concave annular arc-shaped groove II (6.44), and the annular arc-shaped groove II (6.44) is in sealing fit with the annular arc-shaped groove I (6.32) to form an annular circular chamber.

9. The system of claim 8, wherein the system comprises: the sphere (6.41) is embedded in the second annular arc-shaped groove (6.44), and at least two spheres (6.41) are uniformly arranged in the axial direction of the rotating body (6.42) at equal angles.

10. The system of claim 8, wherein the system comprises: the stop block (6.33) is fixed in the first annular arc-shaped groove (6.32), the stop block (6.33) is in a disc shape, and the stop block (6.33) is matched with the second annular arc-shaped groove (6.44).

Background

The lubrication system is a generic term for a series of supply greases, discharge greases, and accessories thereof that supply lubricant to the lubrication sites. For the wheel lubrication and oiling problem of a crane traveling system, the lubrication system is mainly checked manually for a long time at regular intervals, then a method of adding butter to the system manually or electrically is adopted, and then oil is supplied to each wheel through an oil distributor to maintain the normal operation of the traveling system of the crane, the existing crane traveling system has single centralized lubrication mode and complex structure, and the vibration generated by the operation of the crane influences the parts of the lubrication system, can cause leakage, so that the operation system generates dry friction to cause premature damage of the operation parts; in addition, the oil supply period and the oil supply amount of each lubricating point are different, manual regular inspection and oil supply are adopted, frequent operation is needed, and time and labor are wasted.

The invention discloses a crane travelling wheel open gear lubricating system and a crane comprising the same, wherein the lubricating system comprises an oil tank, an oil pipe, an electromagnetic valve, a flow regulating valve and an oil dripping pipe, one end of the oil pipe is connected with the oil tank, the other end of the oil pipe is connected with the electromagnetic valve, the electromagnetic valve is used for controlling the opening and closing of the lubricating system, the oil dripping lubrication is carried out on the open gear through the electromagnetic valve and the flow regulating valve under the action of gravity by depending on the installation height of the oil tank, but the oil supplementing operation is carried out by manually detecting the running condition of the open gear or opening the electromagnetic valve depending on the time length and lacking the automatic identification.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the existing defects, provide a full-automatic monitoring and control centralized lubrication system for crane traveling wheels, which is convenient to operate, can monitor the lubrication condition of each wheel lubrication point in real time so as to control the lubrication system to add or cut off oil, realize full-automatic monitoring and control and lubrication of the traveling system, improve the service life of running parts, reduce grease leakage to the maximum extent, reduce the later maintenance cost of the system, and effectively solve the problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: a full-automatic monitoring control centralized lubrication system for crane traveling wheels comprises an oil tank, an electric grease pump, a controller, an oil distributor, an electromagnetic control valve and a plurality of traveling wheel units; the electric grease pump is communicated with the oil tank and is communicated with the oil distributor through an oil supply main pipe, and each walking wheel unit is communicated with the corresponding oil outlet of the oil distributor through two oil supply branch pipes; the oil distributor is provided with a plurality of electromagnetic control valves which can independently control the oil supply opening or closing of the corresponding oil outlets;

each traveling wheel unit comprises a wheel and a wheel shaft, bearing seats are arranged on two sides, corresponding to the wheel, of a shaft body of the wheel shaft, bearing chambers are formed at two axial ends of each bearing seat in a sealed mode, bearings are arranged in the bearing chambers, a grease cavity is formed in one side, located in each bearing, of each bearing chamber, an ultrasonic sensor stretching into the grease cavity is arranged at the vertical radial upper portion of each bearing seat, an oil injection nozzle stretching into the grease cavity is arranged at the vertical radial lower portion of each bearing seat, and the oil injection nozzles are communicated with oil supply branch pipes;

the ultrasonic sensor of the bearing chamber on one side of each walking wheel unit is electrically connected with the controller, and the controller controls the electromagnetic control valve of the oil distributor corresponding to the bearing chamber to execute corresponding actions; the axle end of the wheel axle of each walking wheel unit is also provided with a rotary encoder which is electrically connected with the controller; the controller is electrically connected with the electric grease pump.

Preferably, the oil distributor includes an upper housing and a lower housing, the upper housing being fixed to an upper portion of the lower housing; the lower shell is provided with a liquid inlet channel penetrating through two opposite side walls of the lower shell, two end openings of the liquid inlet channel are respectively provided with a large joint and a plug, and the large joint is communicated with the main oil supply pipe; the lower shell is provided with at least one liquid outlet channel penetrating through the other two opposite side walls of the lower shell, the liquid outlet channel is perpendicular to and communicated with the liquid inlet channel, openings at two ends of the liquid outlet channel are respectively provided with a joint, the joints are communicated with the oil filling nozzle through oil supply branch pipes, the upper shell is provided with a plurality of mounting cavities extending downwards and communicated with the liquid outlet channel, and the upper part of the upper shell is provided with a plurality of electromagnetic control valves corresponding to the mounting cavities.

Preferably, the electromagnetic control valve comprises an electromagnetic valve coil, a cylinder, a rotary ball valve body, a rotary ball valve core and an oil port control rotating shaft; the electromagnetic valve coil is connected with the upper end face of the rotary ball valve body through the cylinder, the rotary ball valve core is positioned in the rotary ball valve body, and one end of the oil port control rotating shaft extends into the rotary ball valve core from the lower end face of the rotary ball valve body and is connected with the rotary ball valve core; a valve rod of the electromagnetic valve coil extends into the inner cavity of the cylinder body to form a piston structure, and the electromagnetic valve coil can drive the valve rod to reciprocate in the cavity of the cylinder body; the rotary ball valve body comprises a shell, the rotary ball valve core comprises a rotary body, the rotary body is fixedly connected with the connecting end of the oil port control rotating shaft, the rotary body is rotatably arranged in the shell, the outer wall of the rotary body and the inner wall of the shell are in sealing fit to form an annular circular cavity, and a stop block which is used for separating and making the annular circular cavity not communicated with the annular circular cavity is arranged in the annular circular cavity; the outer wall of the rotating body is provided with a ball body, and the ball body is in sealed fit with the annular circular cavity and can rotate along the annular circular cavity; the annular round cavity and the inner cavity of the barrel are provided with oil passages which are communicated with each other, and the oil passages penetrate through the connecting ends of the ball body, the rotating body and the oil port control rotating shaft.

Preferably, hydraulic oil is stored in the cylinder, when the solenoid valve coil drives the valve rod to extend, the valve rod extrudes the hydraulic oil and enables the hydraulic oil to enter the annular circular cavity through the oil passage, and under the blocking action of the stop block, the hydraulic oil pushes the ball body to rotate along the annular circular cavity, so that the oil port is driven to control the rotating shaft to rotate, and the oil port channel at the lower end of the shaft body of the rotating shaft is coaxial with the liquid outlet channel and is opened; similarly, when the solenoid valve coil drives the valve rod to retract, hydraulic oil is sucked, the ball body drives the oil port control rotating shaft to rotate reversely under the action of negative pressure, and the oil port channel at the lower end of the rotating shaft body is controlled by the oil port to be perpendicular to and closed from the liquid outlet channel.

Preferably, the axis direction of the rotating body is provided with a square installation through groove, the sphere is radially provided with a first channel extending into the square installation through groove, the sphere is further provided with a second channel, one end of the second channel is communicated with the first channel, and the other end of the second channel is communicated with the annular circular cavity.

Preferably, the hydraulic fluid port control pivot includes connecting axle and hydraulic fluid port pivot, and the hydraulic fluid port pivot is located the installation cavity, and the axle body middle part of connecting axle is equipped with the square installation piece that leads to the groove adaptation with square installation.

Preferably, the axial direction of the end face of the connecting shaft is provided with a first oil duct penetrating to the square mounting block, the first oil duct is communicated with the cavity of the barrel, the side wall of the square mounting block is provided with a second oil duct communicated with the first oil duct, the second oil duct corresponds to the first channel, and the first oil duct, the second oil duct, the first channel and the second channel form an oil path channel.

Preferably, a first annular arc-shaped groove vertical to the axis of the first annular arc-shaped groove is formed in the shell; the outer wall of the rotating body is provided with a concave annular arc-shaped groove II, and the annular arc-shaped groove II and the annular arc-shaped groove I are matched in a sealing mode to form an annular circular cavity.

Preferably, the spheres are embedded in the second annular arc-shaped groove, and at least two spheres are uniformly arranged in the axial direction of the rotating body at equal angles.

Preferably, the stop block is fixed in the first annular arc-shaped groove and is in a wafer shape, and the stop block is matched with the second annular arc-shaped groove.

Compared with the prior art, the invention has the beneficial effects that: according to the full-automatic monitoring control centralized lubricating system for the crane traveling wheels, an electric grease pump works, grease in an oil tank is pumped into an oil distributor through an oil supply main pipe, and then enters a grease cavity of a wheel traveling unit bearing chamber through an oil outlet and an oil supply branch pipe corresponding to the oil distributor through the action of a corresponding electromagnetic control valve; grease is filled upwards from the lower part of the grease cavity and enters the bearing to lubricate the bearing, the ultrasonic sensor is arranged on the upper part of the grease cavity and can sense the position of the grease in the grease cavity, the ultrasonic sensor feeds back signals to the controller, the grease consumption condition of the bearing can be detected in real time, oil supplementing operation is automatically judged, and serious bearing abrasion caused by lack of grease and untimely discovery is avoided; the bearing chamber of each wheel walking unit is correspondingly provided with an oil injection nozzle and an ultrasonic sensor, the electromagnetic control valve of the oil distributor corresponding to the bearing chamber and the corresponding oil supply branch pipe form an oil supply pipeline system of a single bearing chamber, and the monitoring and oil supply opening and closing operations of the single bearing chamber can be realized; the lubricating condition of each wheel lubricating point can be monitored in real time, so that the lubricating system is controlled to add or cut off oil, the full-automatic monitoring control and lubrication of the traveling system are realized, and the service life of the running part is prolonged; in addition, an electromagnetic control valve on the oil distributor can indirectly open or close the oil outlet, so that the purpose of oil supply or oil cut-off is achieved, grease leakage is reduced to the maximum extent, only a coil of the electromagnetic valve needs to be replaced, and the later-stage maintenance cost of the system is reduced.

Drawings

FIG. 1 is a first schematic structural diagram of the present invention;

FIG. 2 is a second schematic structural view of the present invention;

FIG. 3 is a third schematic structural view of the present invention;

FIG. 4 is a schematic diagram of the oil dispenser and solenoid control valve configuration of the present invention;

FIG. 5 is a top view of FIG. 4;

FIG. 6 is a cross-sectional view A-A of FIG. 5;

FIG. 7 is a cross-sectional view B-B of FIG. 5;

FIG. 8 is a schematic diagram of the structure of the components of the solenoid control valve of the present invention;

FIG. 9 is a cross-sectional view of a solenoid control valve of the present invention;

FIG. 10 is a schematic view of a rotary ball valve body according to the present invention;

FIG. 11 is a cross-sectional view of a rotary ball valve body of the present invention;

FIG. 12 is a schematic view of a rotary ball valve cartridge according to the present invention;

FIG. 13 is a cross-sectional view of a rotary ball valve cartridge of the present invention;

FIG. 14 is a schematic view of the invention showing the mating of a rotary ball valve body and a rotary ball valve core;

FIG. 15 is a schematic view of the oil port control shaft according to the present invention;

FIG. 16 is a cross-sectional view of the rotary ball valve body, the oil port control spindle, and the rotary ball valve core in accordance with the present invention;

FIG. 17 is a schematic view of a side bearing housing of the traveling wheel unit according to the present invention;

fig. 18 is a schematic diagram of the control principle of the present invention.

In the figure:

1, an oil tank;

2 an electric grease pump;

3, a controller;

4 a main oil supply pipe;

5 oil distributors, 5.1 upper shells, 5.11 installation chambers, 5.2 lower shells, 5.21 large joints, 5.22 joints, 5.23 plugs, 5.24 liquid inlet channels and 5.25 liquid outlet channels;

6 electromagnetic control valve, 6.1 electromagnetic valve coil, 6.2 barrel, 6.3 rotary ball valve body, 6.31 shell, 6.32 annular arc groove I, 6.33 baffle, 6.4 rotary ball valve core, 6.41 sphere, 6.42 rotator, 6.43 square installation through groove, 6.44 annular arc groove II, 6.45 channel I, 6.46 channel II, 6.5 oil port control rotating shaft, 6.51 connecting shaft, 6.52 oil port rotating shaft, 6.53 oil channel II, 6.54 oil channel I, 6.55 square installation block;

7 oil supply branch pipes;

8, a rotary encoder;

9 an ultrasonic sensor;

10 walking wheel units, 10.1 wheels, 10.2 bearing seats and 10.3 wheel shafts;

11 oil injection nozzle.

Detailed Description

In the following description, the technical solutions of the present invention will be described with reference to the drawings of the embodiments of the present invention, and it should be understood that, if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "front", "rear", "left", "right", etc., it is only corresponding to the drawings of the present invention, and for convenience of describing the present invention, it is not necessary to indicate or imply that the indicated devices or elements have a specific orientation:

referring to fig. 1-18, the present invention provides a technical solution: a full-automatic monitoring control centralized lubrication system for crane traveling wheels comprises an oil tank 1, an electric grease pump 2, a controller 3, an oil distributor 5, an electromagnetic control valve 6 and a plurality of traveling wheel units 10; the electric grease pump 2 is communicated with the oil tank 1, the electric grease pump 2 is communicated with the oil distributor 5 through the oil supply main pipe 4, each walking wheel unit 10 is communicated with an oil outlet corresponding to the oil distributor 5 through two oil supply branch pipes 7, the electric grease pump 2 pumps grease in the oil tank 1 to the oil distributor 5 through the oil supply main pipe 4, and the oil distributor 5 supplies oil to the walking wheel units 10 through the oil supply branch pipes 7; a plurality of electromagnetic control valves 6 capable of independently controlling the oil supply opening or closing of corresponding oil outlets are arranged on the oil distributor 5, and the electromagnetic control valves 6 can control the corresponding oil outlets on the oil distributor 5;

as shown in fig. 2 and 17, each traveling wheel unit 10 includes a wheel 10.1 and a wheel axle 10.3, bearing seats 10.2 are provided on both sides of the wheel 10.1 corresponding to the axle body of the wheel axle 10.3, two axial ends of the bearing seats 10.2 are sealed to form a bearing chamber, a bearing is provided in the bearing chamber, a grease cavity is provided on one side of the bearing chamber located in the bearing, an ultrasonic sensor 9 extending into the grease cavity is provided on the upper vertical radial portion of the bearing seat 10.2, an oil nozzle 11 extending into the grease cavity is provided on the lower vertical radial portion of the bearing seat 10.2, the oil nozzle 11 is communicated with the oil supply branch pipe 7, grease is injected into the grease cavity through the oil supply branch pipe 7 and the oil nozzle 11, grease is then filled upward from the lower portion of the grease cavity and enters the bearing to lubricate the bearing, ultrasonic impurities or interfaces emitted by the ultrasonic sensor 9 can generate significant reflection to form reflection echoes, and further can sense the position of grease in the grease cavity, the ultrasonic sensor 9 feeds back a signal to the controller 3, so that the grease consumption condition of the bearing can be detected in real time without manual detection and judgment;

as shown in fig. 18, the ultrasonic sensor 9 of the bearing chamber on the side of each traveling wheel unit 10 is electrically connected to the controller 3, and the controller 3 controls the electromagnetic control valve 6 of the oil distributor 5 corresponding to the bearing chamber to perform corresponding operations; a rotary encoder 8 is further arranged at the axle end of the wheel axle 10.3 of each walking wheel unit 10, and the rotary encoder 8 is electrically connected with the controller 3; the controller 3 is electrically connected with the electric grease pump 2; the system is regulated and controlled through the controller 3, so that automatic operation is realized, the connection mode and the control mode of the controller 3, the ultrasonic sensor 9, the electromagnetic control valve 6, the electric grease pump 2 and the rotary encoder 8 are the prior art, the rotary encoder 8 can record the number of running turns of the wheel, a signal can be sent to the controller when the wheel runs to a certain number of turns, and the controller sends a signal to the electric grease pump 2 to start oil supply;

as shown in fig. 4, 5, 6 and 7, the oil distributor 5 includes an upper casing 5.1 and a lower casing 5.2, the upper casing 5.1 is fixed to an upper portion of the lower casing 5.2, and the upper casing 5.1 and the lower casing 5.2 are connected by bolts; the lower shell 5.2 is provided with a liquid inlet channel 5.24 penetrating through two opposite side walls of the lower shell, two end openings of the liquid inlet channel 5.24 are respectively provided with a large joint 5.21 and a plug 5.23, and the large joint 5.21 is communicated with the main oil supply pipe 4; the lower shell 5.2 is provided with at least one liquid outlet channel 5.25 penetrating through the other two opposite side walls, the liquid outlet channel 5.25 is vertical to and communicated with the liquid inlet channel 5.24, two end openings of the liquid outlet channel 5.25 are respectively provided with a joint 5.22, and the joints 5.22 are communicated with the oil injection nozzle 11 through an oil supply branch pipe 7; the grease enters through the liquid inlet channel 5.24, then flows into the liquid outlet channels 5.25, then flows to the oil supply branch pipe 7 through the joint 5.22, and then enters into the grease cavity of the corresponding walking wheel unit 10; the upper shell 5.1 is provided with a plurality of mounting chambers 5.11 which extend downwards and are communicated with the liquid outlet channel 5.25, and the upper part of the upper shell 2 is provided with a plurality of electromagnetic control valves 6 corresponding to the mounting chambers 5.11;

as shown in fig. 8 and 9, the electromagnetic control valve 6 includes an electromagnetic valve coil 6.1, a cylinder 6.2, a rotary ball valve body 6.3, a rotary ball valve core 6.4 and an oil port control rotating shaft 6.5; the electromagnetic valve coil 6.1 is connected with the upper end face of the rotary ball valve body 6.3 through the cylinder 6.2, the rotary ball valve core 6.4 is positioned in the rotary ball valve body 6.3, and one end of the oil port control rotating shaft 6.5 extends into the lower end face of the rotary ball valve body 6.3 and is connected with the rotary ball valve core 6.4; the valve rod of the solenoid valve coil 6.1 extends into the inner cavity of the barrel 6.2 to form a piston structure, the solenoid valve coil 6.1 can drive the valve rod to reciprocate in the cavity of the barrel 6.2, the solenoid valve coil 6.1 pushes out or retracts the valve rod by means of electromagnetic force, the valve rod is matched with the inner cavity of the barrel 6.2, so that extrusion force or adsorption force is generated, the solenoid valve coil 6.1 and the valve rod are of a split structure, the valve rod is located in the inner cavity of the barrel 6.2 to form the piston structure, the solenoid valve coil 6.1 is sleeved on the valve rod, the valve rod is adsorbed when the solenoid valve coil 6.1 is electrified, and the valve rod is reset when the solenoid valve coil 6.1 is powered off;

as shown in fig. 10, 12 and 14, the rotary ball valve body 6.3 includes a housing 6.31, the rotary ball valve core 6.4 includes a rotary body 6.42, the rotary body 6.42 is fixedly connected with the connecting end of the oil port control rotating shaft 6.5, the rotary body 6.42 is rotatably installed in the housing 6.31, an annular circular chamber is formed by sealing and matching the outer wall of the rotary body 6.42 and the inner wall of the housing 6.31, and a stopper 6.33 which is isolated and does not communicate with the annular circular chamber is arranged in the annular circular chamber; the outer wall of the rotating body 6.42 is provided with a ball body 6.41, the ball body 6.41 is in sealing fit with the annular circular chamber and can rotate along the annular circular chamber, the stop block 6.33 can limit the rotation stop position of the ball body 6.41, the stop block 6.33 can seal the annular circular chamber to prevent hydraulic oil from penetrating through gaps in the extrusion or adsorption process, and pressure or adsorption force completely acts on the ball body 6.41;

as shown in fig. 16, the annular circular chamber and the inner cavity of the cylinder 6.2 are provided with oil passages communicated with each other, and the oil passages penetrate through the connecting ends of the ball 6.41, the rotating body 6.42 and the oil port control rotating shaft 6.5; hydraulic oil is stored in the cylinder 6.2, when the solenoid valve coil 6.1 drives the valve rod to extend, the valve rod extrudes the hydraulic oil and enables the hydraulic oil to enter the annular circular cavity through the oil passage, under the blocking action of the stop block 6.33, the hydraulic oil pushes the ball 6.41 to rotate along the annular circular cavity, so that the oil port control rotating shaft 6.5 is driven to rotate, and an oil port channel at the lower end of the shaft body of the oil port control rotating shaft 6.5 is coaxial with the liquid outlet channel 5.25 and is opened; similarly, when the solenoid valve coil 6.1 drives the valve rod to retract, hydraulic oil is sucked, under the action of negative pressure, the ball body 6.41 drives the oil port to control the rotating shaft 6.5 to rotate reversely, the oil port channel at the lower end of the shaft body of the oil port control rotating shaft 6.5 is perpendicular to and closed by the liquid outlet channel 5.25, the solenoid valve coil 6.1 indirectly opens or closes the oil outlet through the function of each component, the purpose of oil supply or oil cut-off is achieved, grease leakage is reduced to the maximum extent, the replacement is convenient, only the solenoid valve coil 6.1 needs to be replaced, time and labor are saved, and the time for supplying power to the solenoid valve coil 6.1 during oil supply can also determine the oil supply amount;

specifically, two liquid outlet channels 5.25 are provided, four mounting chambers 5.11 and four electromagnetic control valves 6 are correspondingly provided, one liquid outlet channel 5.25 is correspondingly communicated with the two mounting chambers 5.11, and the liquid outlet channel 5.25 can independently control the opening or closing of the fluid flowing to the connector 5.22 at one side through the two electromagnetic control valves 6;

as shown in fig. 13 and 14, the rotating body 6.42 is provided with a square mounting through slot 6.43 in the axial direction, the ball 6.41 is provided with a first channel 6.45 extending into the square mounting through slot 6.43 in the radial direction, the ball 6.41 is further provided with a second channel 6.46, one end of the second channel 6.46 is communicated with the first channel 6.45, and the other end of the second channel 6.46 is communicated with the annular circular chamber; the oil port control rotating shaft 6.5 comprises a connecting shaft 6.51 and an oil port rotating shaft 6.52, the oil port rotating shaft 6.52 is positioned in the mounting chamber 5.11, and a square mounting block 6.55 matched with the square mounting through groove 6.43 is arranged in the middle of the shaft body of the connecting shaft 6.51;

as shown in fig. 15, a first oil passage 6.54 penetrating through the square mounting block 6.55 is arranged in the axial direction of the end face of the connecting shaft 6.51, the first oil passage 6.54 is communicated with the cavity of the cylinder 6.2, a second oil passage 6.53 communicated with the first oil passage 6.54 is arranged on the side wall of the square mounting block 6.55, the second oil passage 6.53 corresponds to the first channel 6.45, and the first oil passage 6.54, the second oil passage 6.53, the first channel 6.45 and the second channel 6.46 form an oil passage;

it can be understood that when the solenoid valve coil 6.1 extrudes hydraulic oil through the valve rod, the hydraulic oil sequentially enters the annular circular cavity through the first oil passage 6.54, the second oil passage 6.53, the first passage 6.45 and the second passage 6.46, the hydraulic oil fills the area between the ball 6.41 and the stop block 6.33 and is blocked by the stop block 6.33, the hydraulic oil pushes the ball 6.41 to rotate, the ball 6.41 drives the rotating body 6.42 to rotate, the rotating body 6.42 drives the connecting shaft 6.51 to rotate, so as to drive the oil port rotating shaft 6.52 to rotate, and when the ball 6.41 contacts the stop block 6.33 again, the ball 6.41 is at the stop position and rotates to the open position corresponding to the oil port rotating shaft 6.52; when the solenoid valve coil 6.1 sucks hydraulic oil through the valve rod, the filled hydraulic oil is sucked back, the ball body 6.41 rotates reversely, so that the oil port rotating shaft 6.52 is driven to rotate in the direction, and when the ball body 6.41 is in contact with the stop block 6.33, the ball body 6.41 is in an initial position and rotates to a closed position corresponding to the oil port rotating shaft 4.3;

as shown in fig. 10 and 12, a first annular arc-shaped groove 6.32 perpendicular to the axis of the first annular arc-shaped groove is formed in the shell 6.31; the outer wall of the rotating body 6.42 is provided with a concave annular arc-shaped groove II 6.44, and the annular arc-shaped groove II 6.44 is in sealing fit with the annular arc-shaped groove I6.32 to form an annular circular chamber;

as shown in fig. 11, the housing 6.31 is provided with mounting holes in the axial direction for fitting with the connecting shaft 6.51, the outer wall of the housing 6.31 is provided with two mounting lugs symmetrically in the axial direction, and the mounting lugs are connected with the upper housing 5.1 of the oil distributor 5 through screws;

as shown in fig. 12, the spheres 6.41 are embedded in the second annular arc-shaped groove 6.44, at least two spheres 6.41 are uniformly arranged in the axial direction of the rotator 6.42 at equal angles, in order to ensure the smooth rotation of the rotator 6.42 when rotating, two spheres 6.41 are arranged, the two spheres 6.41 are symmetrically arranged, when the hydraulic oil pushes the first sphere 6.41 to rotate, the second sphere 6.41 also rotates, the oil port controls the rotation of the rotating shaft 6.5, when the second sphere 6.41 contacts the stopper 6.33, the oil port controls the rotating shaft 4 to rotate to the right position and opens the oil port, when the hydraulic oil is pumped back, the first sphere 6.41 rotates back, and when the first sphere 6.41 contacts the stopper 6.33, the oil port controls the rotating shaft 6.5 to rotate to the right position in the reverse direction and closes the oil port;

in addition, the stop 6.33 is fixed in the first annular arc-shaped groove 6.32, the stop 6.33 is in a disc shape, and the stop 6.33 is matched with the second annular arc-shaped groove 6.44; the joint 5.22 and the large joint 5.21 are both ferrule type straight-through taper pipe joints.

When the oil supply device is implemented, the electric grease pump 2 works, grease in the oil tank 1 is pumped into the grease distributor 5 through the main oil supply pipe 4, the grease acts through the corresponding electromagnetic control valve 6, the grease enters the grease cavity of the bearing chamber of the wheel walking unit 10 through the oil outlet corresponding to the grease distributor 5 and the oil supply branch pipe 7, the grease is filled upwards from the lower part of the grease cavity and enters the bearing to lubricate the bearing, the ultrasonic sensor 9 is arranged at the upper part of the grease cavity and can sense the position of the grease in the grease cavity, the ultrasonic sensor 9 feeds back a signal to the controller 3, the grease consumption condition of the bearing can be detected in real time, the oil supplementing operation is automatically judged, and the serious bearing abrasion caused by the lack of the grease and the untimely discovery can be avoided; the controller 3 can realize the oil supply opening and closing operation of a single bearing chamber by controlling the corresponding electromagnetic control valve 6 to act; and then can real-time supervision each wheel lubrication point thereby control lubricating system refuels or cuts off oil to its, has realized full-automatic monitoring control and lubrication to traveling system, improves the life of operation part.

The invention is not described in detail in the prior art, and it is apparent to a person skilled in the art that the invention is not limited to details of the above-described exemplary embodiments, but that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the scope of the claims concerned.