1. The planetary reducer with the adjustable axial gap comprises a casing (11), wherein the bottom of the casing (11) is connected with a bottom plate (14) through a supporting plate (13), an output shaft (12) is arranged at one end of the casing (11), a casing rear seat (16) is arranged on one side, away from the output shaft (12), of the casing (11), a coupler (21) is installed in the casing rear seat (16), and one side, away from the casing (11), of the casing rear seat (16) is detachably connected with an input end cover (17);

the method is characterized in that: an adjusting part (27) is arranged in the machine shell (11), a driving part is arranged in the machine shell rear seat (16) and used for driving the adjusting part (27) to move so as to adjust the axial clearance of the sun gear (24) in the machine shell (11), a protection box (18) is arranged at the top of the machine shell rear seat (16), and a driving gear (29) is arranged in the protection box (18) and used for driving the driving part to work;

the adjusting piece (27) comprises an outer ring plate (35) and an inner ring plate (37), a plurality of groups of heat conducting fins (36) are connected between the outer ring plate (35) and the inner ring plate (37), one side of the inner ring plate (37) close to the sun gear (24) is fixedly connected with an adjusting ring (38), and a cooling piece which is sleeved on the outer side of the outer ring plate (35) and is not in contact with the outer ring plate (35) is arranged in the casing (11) and used for absorbing heat transmitted by the outer ring plate (35) and heat of an inner cavity of the casing (11).

2. The planetary reducer with the adjustable axial gap as claimed in claim 1, wherein: the driving piece includes ring gear (30), ring gear (30) outer wall is equipped with the external tooth, ring gear (30) inner wall is equipped with the internal tooth, install in casing back seat (16) driven gear (31) that set up with two sets of symmetries of ring gear (30) internal tooth meshing, it is two sets of lead screw (32) are all worn to be equipped with by driven gear (31) axle head, and driven gear (31) and lead screw (32) threaded connection.

3. The planetary reducer with the adjustable axial gap as claimed in claim 2, wherein: casing (11) inner wall connection has positioning seat (28), positioning seat (28) inner wall connection has first fixed block (33) that are used for installing lead screw (32) that two sets of symmetries set up, first fixed block (33) are close to the first seat of rotating of one side fixed connection of lead screw (32), first seat of rotating rotates and connects lead screw (32), the one end that first fixed block (33) were kept away from in lead screw (32) is rotated and is connected the second and rotate the seat, seat fixed connection second fixed block (34) is rotated to the second, install at casing back seat (16) inner wall second fixed block (34).

4. The planetary reducer with the adjustable axial gap as claimed in claim 3, wherein: the outer wall of the outer ring plate (35) is fixedly connected with two groups of connecting plates (39), moving holes (40) in threaded connection with the screw rods (32) are formed in the connecting plates (39), and one side, far away from the outer ring plate (35), of each connecting plate (39) is in sliding connection with the inner wall of the positioning seat (28).

5. The planetary reducer with the adjustable axial gap as claimed in claim 2, wherein: the driving gear (29) is meshed with external teeth of a gear ring (30), the gear ring (30) is installed inside the rear seat (16) of the machine shell and is in running fit with the rear seat (16) of the machine shell, a fixing seat used for fixing the rotating position of the driving gear (29) is further installed on the rear seat (16) of the machine shell, the driving gear (29) is in running fit with the fixing seat, a through hole used for a screw rod (32) to penetrate through is formed in the fixing seat, and the inner diameter of the through hole is larger than the outer diameter of the screw rod (32);

one side that casing (11) were kept away from in protective housing (18) is equipped with through-hole (19), one side that drive gear (29) are close to through-hole (19) is equipped with the rectangular channel, the rectangular channel cooperation is connected with the drive square bar for pass through-hole (19) and drive gear (29) and rotate.

6. The planetary reducer with the adjustable axial gap as claimed in claim 4, wherein: the cooling part comprises a fixed ring frame (25), the outer wall of the fixed ring frame (25) is connected with one side, away from the positioning seat (28), of a first fixed block (33), a cooling liquid pipeline (26) is arranged in the fixed ring frame (25), the liquid outlet end of the cooling liquid pipeline (26) is connected with the liquid inlet end of a circulating pump (15), the circulating pump (15) is installed on the bottom plate (14), the liquid inlet end of the cooling liquid pipeline (26) is connected with a three-way pipe, and one end of the three-way pipe is connected with the liquid outlet end of the circulating pump (15).

7. The planetary reducer with the adjustable axial gap as claimed in claim 6, wherein: the bottom of the machine shell (11) is provided with a pipe hole for a cooling liquid pipeline (26) to penetrate through, and a sealing piece is arranged at the pipe hole.

8. The planetary reducer with the adjustable axial gap as claimed in claim 1, wherein: the output end of the coupler (21) is connected with a sun gear (24) through a driving shaft (22), a cushion block (23) is sleeved at one end, close to the sun gear (24), of the driving shaft (22), the inner diameter of the inner ring plate (37) and the inner diameter of the adjusting ring (38) are larger than the outer diameter of the driving shaft (22), and the adjusting ring (38) is far away from the inner ring plate (37) and contacts the cushion block (23) on one side.

9. The planetary reducer with the adjustable axial gap as claimed in claim 1, wherein: and the input end cover (17) is provided with an input port (20) communicated with the input end of the coupler (21).

10. The planetary reducer with the adjustable axial gap as claimed in claim 1, wherein: the outer ring plate (35) and the inner ring plate (37) are both made of heat-conducting metal materials.

Background

In the working process of the planetary reducer, the sun gear has high rotation speed, temperature rise and thermal expansion are high in working process, and the sun gear is abraded after being used for a long time, so that the axial gap of the sun gear is increased, and the size of the axial gap has influence on the fatigue life, the temperature rise, the noise, the vibration and other performances of the sun gear.

In the prior art, the thickness of a gasket between an input end cover and a sun gear is increased or decreased to adjust, but the speed reducer needs to be disassembled during operation; or the screw arranged on the input end cover is used for pushing the cushion block pressed on one side of the sun gear to adjust, but the cushion block is easy to incline when the screw pushes the cushion block, and the adjustment is unstable. In order to solve the problems, a planetary reducer with an adjustable axial gap is provided.

Disclosure of Invention

The invention aims to provide a planetary reducer with an adjustable axial gap, which aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

the planetary reducer with the adjustable axial gap comprises a shell, wherein the bottom of the shell is connected with a bottom plate through a supporting plate, an output shaft is arranged at one end of the shell, a shell rear seat is arranged on one side, away from the output shaft, of the shell, a coupler is arranged in the shell rear seat, and one side, away from the shell, of the shell rear seat is detachably connected with an input end cover;

the adjusting part is arranged in the casing, the driving part is arranged in the rear seat of the casing and used for driving the adjusting part to move so as to adjust the axial clearance of the sun gear in the casing, the top of the rear seat of the casing is provided with a protection box, and the protection box is internally provided with a driving gear which is used for driving the driving part to work;

the adjusting piece comprises an outer ring plate and an inner ring plate, a plurality of groups of heat conducting fins are connected between the outer ring plate and the inner ring plate, one side of the inner ring plate, which is close to the sun gear, is fixedly connected with an adjusting ring, and a cooling piece which is sleeved on the outer side of the outer ring plate and is not in contact with the outer ring plate is arranged in the casing and is used for absorbing heat transmitted by the outer ring plate and heat of the inner cavity of the casing.

As a further scheme of the invention, the driving member comprises a gear ring, outer teeth are arranged on the outer wall of the gear ring, inner teeth are arranged on the inner wall of the gear ring, two groups of symmetrically arranged driven gears which are meshed with the inner teeth of the gear ring are installed in the rear seat of the machine shell, screw rods are arranged at the shaft ends of the two groups of driven gears in a penetrating manner, and the driven gears are in threaded connection with the screw rods.

As a further scheme of the invention, the inner wall of the casing is connected with a positioning seat, the inner wall of the positioning seat is connected with two groups of first fixing blocks which are symmetrically arranged and used for installing a screw rod, one side of the first fixing block, which is close to the screw rod, is fixedly connected with a first rotating seat, the first rotating seat is rotatably connected with the screw rod, one end of the screw rod, which is far away from the first fixing block, is rotatably connected with a second rotating seat, the second rotating seat is fixedly connected with a second fixing block, and the second fixing block is installed on the inner wall of a rear seat of the casing.

According to a further scheme of the invention, two groups of connecting plates are fixedly connected to the outer wall of the outer ring plate, moving holes in threaded connection with the screw rods are formed in the connecting plates, and one side, far away from the outer ring plate, of each connecting plate is connected with the inner wall of the positioning seat in a sliding mode.

As a further scheme of the invention, the driving gear is meshed with external teeth of a gear ring, the gear ring is arranged inside a rear seat of the machine shell and is in rotating fit with the rear seat of the machine shell, the rear seat of the machine shell is also provided with a fixed seat for fixing the rotating position of the driving gear, the driving gear is in rotating fit with the fixed seat, the fixed seat is provided with a through hole for a screw rod to pass through, and the inner diameter of the through hole is larger than the outer diameter of the screw rod; one side that the casing was kept away from to the protective box is equipped with the through-hole, one side that drive gear is close to the through-hole is equipped with the rectangular channel, the rectangular channel cooperation is connected with the drive square bar for pass the through-hole and drive gear and rotate.

According to a further scheme of the invention, the cooling part comprises a fixed ring frame, the outer wall of the fixed ring frame is connected with one side, away from the positioning seat, of the first fixed block, a cooling liquid pipeline is arranged in the fixed ring frame, the liquid outlet end of the cooling liquid pipeline is connected with the liquid inlet end of the circulating pump, the circulating pump is installed on the bottom plate, the liquid inlet end of the cooling liquid pipeline is connected with a three-way pipe, and one end of the three-way pipe is connected with the liquid outlet end of the circulating pump.

As a further scheme of the invention, the bottom of the machine shell is provided with a pipe hole for the cooling liquid pipeline to pass through, and a sealing piece is arranged at the pipe hole.

As a further scheme of the invention, the output end of the coupler is connected with a sun gear through a driving shaft, one end of the driving shaft, which is close to the sun gear, is sleeved with a cushion block, the inner diameters of the inner ring plate and the adjusting ring are both larger than the outer diameter of the driving shaft, and one side of the adjusting ring, which is far away from the inner ring plate, is in contact with the cushion block.

As a further scheme of the invention, the input end cover is provided with an input port communicated with the input end of the coupler.

As a further scheme of the invention, the outer ring plate and the inner ring plate are both made of heat-conducting metal materials.

Compared with the prior art, the invention has the beneficial effects that:

when the axial clearance of the sun gear needs to be adjusted, the driving piece can be driven to work through the rotation of the driving gear, so that the adjusting piece can slide in the positioning seat and is convenient to be close to or far away from the cushion block, the axial clearance of the sun gear can be adjusted, the speed reducer does not need to be disassembled during operation, the adjusting piece can stably slide, and the skew condition cannot occur;

the regulating part has the heat conduction effect simultaneously, and the heat that the drive shaft produced can derive cooling part department through the regulating part, and the cooling part can absorb the heat of casing inner chamber simultaneously, reduces the temperature of casing inner chamber when the speed reducer work, prolongs the life of speed reducer.

Drawings

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

Fig. 2 is a schematic structural diagram of the input end cap mounting part of the invention.

Fig. 3 is a schematic view of the internal structure of the present invention.

Fig. 4 is a schematic structural view of a driving gear, a driving member and an adjusting member in the present invention.

Fig. 5 is a schematic structural view of an adjusting member according to the present invention.

In the figure: 11-machine shell, 12-output shaft, 13-support plate, 14-bottom plate, 15-circulating pump, 16-machine shell rear seat, 17-input end cover, 18-protective box, 19-through hole, 20-input port, 21-coupler, 22-driving shaft, 23-cushion block, 24-sun gear, 25-fixed ring frame, 26-cooling liquid pipeline, 27-regulating component, 28-positioning seat, 29-driving gear, 30-toothed ring, 31-driven gear, 32-screw rod, 33-first fixed block, 34-second fixed block, 35-outer ring plate, 33-first fixed block, 34-second fixed block, 36-thermally conductive fins, 37-inner ring plate, 38-adjusting ring, 39-engaging plates, 40-moving holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, in the embodiment of the present invention, a planetary reducer with an adjustable axial gap includes a casing 11, a bottom of the casing 11 is connected to a bottom plate 14 through a support plate 13, an output shaft 12 is disposed at one end of the casing 11, a casing rear seat 16 is disposed at a side of the casing 11 away from the output shaft 12, a coupler 21 is installed in the casing rear seat 16, an input end cover 17 is detachably connected to a side of the casing rear seat 16 away from the casing 11, and an input port 20 communicated with an input end of the coupler 21 is disposed on the input end cover 17;

an adjusting part 27 is arranged in the machine shell 11, a driving part is arranged in the machine shell rear seat 16 and used for driving the adjusting part 27 to move so as to adjust the axial clearance of the sun gear 24 in the machine shell 11, a protection box 18 is arranged at the top of the machine shell rear seat 16, and a driving gear 29 is arranged in the protection box 18 and used for driving the driving part to work;

the adjusting element 27 comprises an outer ring plate 35 and an inner ring plate 37, a plurality of groups of heat conducting fins 36 are connected between the outer ring plate 35 and the inner ring plate 37, the outer ring plate 35 and the inner ring plate 37 are both made of heat conducting metal materials, one side of the inner ring plate 37, which is close to the sun gear 24, is fixedly connected with an adjusting ring 38, and a cooling element which is sleeved outside the outer ring plate 35 and is not in contact with the outer ring plate 35 is arranged in the casing 11 and is used for absorbing heat transmitted by the outer ring plate 35 and heat of the inner cavity of the casing 11.

The driving piece includes ring gear 30, ring gear 30 outer wall is equipped with the external tooth, ring gear 30 inner wall is equipped with the internal tooth, install in the casing back seat 16 with the driven gear 31 of 30 internal tooth meshing's two sets of symmetries settings of ring gear, it is two sets of lead screw 32 is all worn to be equipped with by driven gear 31 axle head, and driven gear 31 and lead screw 32 threaded connection.

The inner wall of the casing 11 is connected with a positioning seat 28, the inner wall of the positioning seat 28 is connected with two sets of first fixing blocks 33 which are symmetrically arranged and used for installing a screw rod 32, one side of the first fixing block 33 close to the screw rod 32 is fixedly connected with a first rotating seat, the first rotating seat is rotatably connected with the screw rod 32, one end, far away from the first fixing block 33, of the screw rod 32 is rotatably connected with a second rotating seat, the second rotating seat is fixedly connected with a second fixing block 34, and the second fixing block 34 is installed on the inner wall of the casing rear seat 16.

Two groups of connecting plates 39 are fixedly connected to the outer wall of the outer ring plate 35, moving holes 40 in threaded connection with the screw rods 32 are formed in the connecting plates 39, and one side, far away from the outer ring plate 35, of each connecting plate 39 is in sliding connection with the inner wall of the positioning seat 28.

The driving gear 29 is meshed with external teeth of a gear ring 30, the gear ring 30 is mounted inside the rear housing base 16 and is in rotating fit with the rear housing base 16, the rear housing base 16 is further provided with a fixing base for fixing the rotating position of the driving gear 29, the driving gear 29 is in rotating fit with the fixing base, a through hole for a screw rod 32 to penetrate through is formed in the fixing base, and the inner diameter of the through hole is larger than the outer diameter of the screw rod 32; a through hole 19 is formed in one side, away from the machine shell 11, of the protection box 18, a rectangular groove is formed in one side, close to the through hole 19, of the driving gear 29, and the rectangular groove is connected with a driving square rod in a matched mode and used for penetrating through the through hole 19 to drive the driving gear 29 to rotate; the output end of the coupler 21 is connected with a sun gear 24 through a driving shaft 22, a cushion block 23 is sleeved at one end, close to the sun gear 24, of the driving shaft 22, the inner diameters of the inner ring plate 37 and the adjusting ring 38 are both larger than the outer diameter of the driving shaft 22, and one side, far away from the inner ring plate 37, of the adjusting ring 38 is in contact with the cushion block 23;

when the axial clearance needs to be adjusted to sun gear 24, can pass through-hole 19 through the drive square pole and insert the rectangular channel in, drive gear 29 rotates, drive gear 29 can drive ring gear 30 and rotate, rotate with two sets of driven gear 31 of ring gear 30 meshing, thereby make lead screw 32 rotate, slide in positioning seat 28 with the connection plate 39 of lead screw 32 threaded connection, regulating part 27 moving as a whole, be convenient for be close to cushion 23 or keep away from cushion 23, thereby adjust the axial clearance of sun gear 24, the speed reducer need not be dismantled during the operation, regulating part 27 can slide steadily, the crooked condition can not take place.

The cooling part comprises a fixed ring frame 25, the outer wall of the fixed ring frame 25 is connected with one side, away from the positioning seat 28, of a first fixed block 33, a cooling liquid pipeline 26 is arranged in the fixed ring frame 25, the liquid outlet end of the cooling liquid pipeline 26 is connected with the liquid inlet end of a circulating pump 15, the circulating pump 15 is installed on the bottom plate 14, the liquid inlet end of the cooling liquid pipeline 26 is connected with a three-way pipe, and one end of the three-way pipe is connected with the liquid outlet end of the circulating pump 15; the bottom of the casing 11 is provided with a pipe hole for the cooling liquid pipeline 26 to pass through, and a sealing member is arranged at the pipe hole.

Circulating pump 15 can drive the coolant liquid at coolant liquid pipeline 26 inner loop flow, another port of three-way pipe can also pass through pipe connection coolant liquid input device, can cool down the coolant liquid that carries the heat, the cooling member sets up at casing 11 inner chamber, the heat that drive shaft 22 produced can be derived cooling member department through regulating part 27, the cooling member can absorb the heat of casing 11 inner chamber simultaneously, reduce the temperature of speed reducer during operation casing 11 inner chamber, the life of extension speed reducer.

The working principle of the invention is as follows: when the axial clearance needs to be adjusted to sun gear 24, can use the drive square bar to insert the rectangular channel through-hole 19 in, it drives drive gear 29 and rotates to rotate the drive square bar, drive gear 29 can drive ring gear 30 and rotate, two sets of driven gear 31 with ring gear 30 meshing rotate, thereby make lead screw 32 rotate, link up board 39 with lead screw 32 threaded connection slides in positioning seat 28, regulating part 27 moving as a whole, be convenient for be close to cushion 23 or keep away from cushion 23, thereby adjust the axial clearance of sun gear 24, the cooling part can absorb the heat of casing 11 inner chamber, reduce the temperature of speed reducer during operation casing 11 inner chamber.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof.