1. A probing type underwater pier surface defect detection device comprises an annular base frame (1), wherein a plurality of groups of driving units are uniformly distributed on the base frame (1) in a circumferential manner, each group of driving units comprises a radial rod (2) which is slidably arranged on the base frame (1) in a penetrating manner, a wheel carrier (3) is arranged at the inner end of the radial rod (2), a first spring (4) is arranged between the wheel carrier (3) and the base frame (1), an inclined shaft (5) is arranged on the wheel carrier (3), the upper end of the inclined shaft (5) inclines towards the clockwise direction, a roller (6) is arranged on the inclined shaft (5), a first bevel gear (7) is arranged on the inclined shaft (5), a horizontal second bevel gear (8) is arranged on the wheel carrier (3), and the second bevel gear (8) is meshed with the first bevel gear (7), the second bevel gear (8) is coaxially provided with a first chain wheel (9), the driving unit further comprises a chain (10), the chain (10) is meshed with the first chain wheels (9) simultaneously, one of the first chain wheels (9) is provided with a motor (11), and the motor (11) is fixed on the base frame (1); the cleaning unit comprises a shovel plate (12) and a cutting wheel (13), one end of the shovel plate (12) is hinged to the inner wall of the base frame (1), the other end of the shovel plate faces the rotating direction of the base frame (1), a second spring (14) is installed between the shovel plate (12) and the inner wall of the base frame (1), and the cutting wheel (13) is installed on the inner wall of the base frame (1) and located between the free end of the shovel plate (12) and the base frame (1); the detection unit comprises a feeler lever (15), one end of the feeler lever (15) is hinged on the inner wall of the base frame (1), the other end of the feeler lever faces to the reverse direction of the rotation direction of the base frame (1), the detection unit further comprises a plunger cylinder (16) fixed on the inner wall of the base frame (1) in an inclined mode, the inclined direction of the plunger cylinder (16) is opposite to the inclined direction of the feeler lever (15), a plunger rod (17) is installed in the plunger cylinder (16), a pressure sensor (18) is installed at the bottom of the plunger rod (17), a third spring (19) is installed between the plunger rod (17) and the pressure sensor (18), and the outer end of the plunger rod (17) is propped against the.

2. The device for detecting the surface defects of the penetrating underwater pier is characterized in that the cleaning units and the detecting units are arranged in two groups, the two groups of cleaning units are centrosymmetric, the two groups of detecting units are centrosymmetric, and the cleaning units are positioned on the front sides of the detecting units.

3. The surface defect detection device for the penetrating type underwater pier is characterized in that the base frame (1) is composed of two semicircular parts, and two ends of the two semicircular parts are connected through bolts.

4. The surface defect detection device for the penetrating type underwater pier is characterized in that a second chain wheel (20) is mounted on the cutting wheel (13), the second chain wheel (20) is meshed with the chain (10), and the chain (10) drives the cutting wheel (13) to rotate through the second chain wheel (20).

5. The surface defect detection device for the penetrating type underwater pier is characterized in that an axial sliding groove (21) is formed in the side wall of the penetrating rod (15), and the end of the plunger rod (17) is placed in the sliding groove (21).

6. The surface defect detection device for the penetrating type underwater pier is characterized in that the side wall of the roller (6) is an elliptic arc curve.

7. The device for detecting the surface defects of the exploratory underwater pier as claimed in claim 1, wherein the rollers (6) are made of rubber.

8. The surface defect detection device for the penetrating underwater pier is characterized in that each group of detection units comprises a plurality of probes (15) and plunger rods (17) which are arranged up and down.

9. The surface defect detecting device for the penetrating underwater pier is characterized in that a communicating hole (22) is formed in the bottom of the plunger cylinder (16).

10. The surface defect detecting device for the penetrating underwater pier as claimed in claim 1, wherein a waterproof cover (23) is externally mounted on the motor (11).

Background

In the underwater part of the pier, the surface of the pier is easy to have the defect of an erosion pit due to the long-term comprehensive effects of water body corrosion, water flow scouring and the like, so that the regular detection is needed; at present, a diving camera is generally adopted to comprehensively observe the surface condition of the underwater section of the pier, but the underwater part of the pier is often covered with moss, wound with aquatic weeds, deposited with silt, and colonized with shrimps and crabs, and the like, so that the camera is difficult to comprehensively and visually observe the surface of the pier, and is influenced by the refractive index of a water body, the water body flows and shakes to cause the shaking and poor definition of the observation visual field of the camera, and for a muddy water area, the camera cannot observe, therefore, the equipment often manufactures a closed environment outside the pier and then completely discharges water in the closed area to form a waterless area so as to be convenient for the camera to detect, but equipment for camping the waterless area is heavy and complicated, poor in flexibility, troublesome in process and slow in speed, so that the equipment cost and the working cost are high, and the working efficiency is low.

Disclosure of Invention

The invention provides a probing-type underwater pier surface defect detection device, which is used for solving the problems of poor adaptability, high equipment cost and low working efficiency of underwater pier detection equipment.

The technical scheme includes that the probing type underwater pier surface defect detection device comprises an annular base frame, wherein a plurality of groups of driving units, a cleaning unit and a detection unit are uniformly distributed on the base frame in the circumferential direction, each group of driving units comprises a radial rod which is slidably arranged on the base frame in a penetrating mode, a wheel frame is arranged at the inner end of the radial rod, a first spring is arranged between the wheel frame and the base frame, an inclined shaft is arranged on the wheel frame, the upper end of the inclined shaft inclines towards the clockwise direction, a roller wheel is arranged on the inclined shaft, a first bevel gear is arranged on the inclined shaft, a horizontal second bevel gear is arranged on the wheel frame and meshed with the first bevel gear, a first chain wheel is coaxially arranged on the second bevel gear, the driving unit further comprises a chain, the chain is meshed with the plurality of first chain wheels simultaneously, and a motor is arranged on one of the first chain wheels, the motor is fixed on the base frame; the cleaning unit comprises a shovel plate and a cutting wheel, one end of the shovel plate is hinged to the inner wall of the base frame, the other end of the shovel plate faces the rotating direction of the base frame, a second spring is arranged between the shovel plate and the inner wall of the base frame, and the cutting wheel is arranged on the inner wall of the base frame and located between the free end of the shovel plate and the base frame; the detection unit comprises a probe rod, one end of the probe rod is hinged to the inner wall of the base frame, the other end of the probe rod faces the reverse direction of the rotation direction of the base frame, the detection unit further comprises a plunger cylinder fixed on the inner wall of the base frame in an inclined mode, the inclined direction of the plunger cylinder is opposite to the inclined direction of the probe rod, a plunger rod is installed in the plunger cylinder, a pressure sensor is installed at the bottom of the plunger rod, a third spring is installed between the plunger rod and the pressure sensor, and the outer end of the plunger rod abuts against the side wall of the probe rod.

The cleaning unit and the detection unit are provided with two groups, the two groups of cleaning units are centrosymmetric, the two groups of detection units are centrosymmetric, and the cleaning unit is located on the front side of the detection unit.

The base frame is composed of two semicircular parts, and two ends of the two semicircular parts are connected through bolts.

The cutting wheel is provided with a second chain wheel which is meshed with the chain, and the chain drives the cutting wheel to rotate through the second chain wheel.

An axial sliding groove is formed in the side wall of the probe rod, and the end part of the plunger rod is arranged in the sliding groove.

The side wall of the roller is an elliptic arc curve.

The rollers are made of rubber.

Each group of detection units comprises a plurality of probes and plunger rods which are arranged up and down.

The bottom of the plunger cylinder is provided with a communicating hole.

The motor is externally provided with a waterproof cover.

The invention is not influenced by the attachment on the surface of the pier and the water body, does not need to camp and set an anhydrous environment, has strong adaptability to the environment, and has high detection speed and high working efficiency.

Drawings

FIG. 1 is a top view of the present invention.

Fig. 2 is a front sectional view of the present invention.

Fig. 3 is an orthographic view of the rollers on the pier.

Fig. 4 is a half sectional view of the probe position.

Fig. 5 is an enlarged view of the position a in fig. 1.

Fig. 6 is an enlarged view of the position B in fig. 1.

Detailed Description

The following detailed description of specific embodiments of the invention refers to the accompanying drawings.

The invention comprises an annular base frame 1, a driving unit, a cleaning unit and a detection unit are arranged on the base frame 1, the driving unit is uniformly distributed on the periphery of the base frame 1 in multiple groups, each group of driving unit comprises a radial rod 2 which is slidably arranged on the base frame 1 in a penetrating way, a wheel carrier 3 is arranged at the inner end of the radial rod 2, a first spring 4 is arranged between the wheel carrier 3 and the base frame 1, an inclined shaft 5 is arranged on the wheel carrier 3, the upper end of the inclined shaft 5 inclines towards the clockwise direction, a roller 6 is arranged on the inclined shaft 5, a first bevel gear 7 is arranged on the inclined shaft 5, a horizontal second bevel gear 8 is arranged on the wheel carrier 3, the second bevel gear 8 is meshed with the first bevel gear 7, a first chain wheel 9 is coaxially arranged on the second bevel gear 8, the driving unit also comprises a chain 10, the chain 10 is meshed with the plurality of first chain wheels 9 at the same time, a motor 11 of the first chain wheel 9 is arranged on the chain, the motor 11 is fixed on the base frame 1; the cleaning unit comprises a shovel plate 12 and a cutting wheel 13, one end of the shovel plate 12 is hinged to the inner wall of the base frame 1, the other end of the shovel plate faces the rotating direction of the base frame 1, a second spring 14 is installed between the shovel plate 12 and the inner wall of the base frame 1, and the cutting wheel 13 is installed on the inner wall of the base frame 1 and is located between the free end of the shovel plate 12 and the base frame 1; the detection unit comprises a probe rod 15, one end of the probe rod 15 is hinged to the inner wall of the base frame 1, the other end of the probe rod 15 faces the direction opposite to the rotating direction of the base frame 1, the detection unit further comprises a plunger cylinder 16 which is obliquely fixed on the inner wall of the base frame 1, the oblique direction of the plunger cylinder 16 is opposite to the oblique direction of the probe rod 15, a plunger rod 17 is installed in the plunger cylinder 16, a pressure sensor 18 is installed at the bottom of the plunger rod 17, a third spring 19 is installed between the plunger rod 17 and the pressure sensor 18, and the outer end of the plunger rod 17 is abutted to the side wall of the probe rod 15.

Cleaning element and detecting element all be equipped with two sets ofly, two sets of cleaning element centrosymmetries, two sets of detecting element centrosymmetries, cleaning element is located detecting element's front side, when bed frame 1 rotated around the pier, cleaning element cleared up the pier surface earlier, detecting element detects the pier again, two sets of detecting element can carry out twice detection to the pier, avoid omitting.

In order to buckle the base frame 1 on a pier, the base frame 1 consists of two semicircular parts, and two ends of the two semicircular parts are connected through bolts.

The cutting wheel 13 is provided with a second chain wheel 20, the second chain wheel 20 is meshed with the chain 10, and the chain 10 drives the cutting wheel 13 to rotate through the second chain wheel 20.

An axial sliding groove 21 is formed in the side wall of the probe rod 15, and the end of the plunger rod 17 is placed in the sliding groove 21 to prevent the end of the plunger rod 17 from being separated from the probe rod 15.

The side wall of the roller 6 is an elliptic arc curve, so that the roller 6 is better attached to a pier.

The rollers 6 are made of rubber materials and can elastically deform, and under the pressure of the first springs 4, the rollers 6 are tightly pressed on the surfaces of the piers and slightly deform, so that the contact surfaces between the rollers 6 and the piers are larger.

Each set of said detecting units comprises a plurality of probes 15 and plunger rods 17 arranged one above the other, so that the axial span of detection is larger.

The bottom of the plunger cylinder 16 is provided with a communicating hole 22 for balancing the water pressure at the two ends of the plunger rod 17.

A waterproof cover 23 is arranged outside the motor 11.

When the detection is carried out, firstly, the base frame 1 is buckled on a pier and locked by bolts, after the locking, under the action of the first spring 4, the idler wheels 6 on each group of driving units are tightly pressed on the surface of the pier, under the action of the second spring 14, the free end of the shovel plate 12 is attached to the surface of the pier, under the action of the third spring 19, the plunger rod 17 abuts against the feeler lever 15, and the free end of the feeler lever 15 is attached to the surface of the pier; after the base frame 1 is installed, the chain 10 is wound around the plurality of first chain wheels 9 and the second chain wheels 20 in sequence and the chain 10 is tensioned; the detected value of the pressure sensor 18 is transmitted to the receiving device.

After the base frame 1 and the chain 10 are installed, starting the motor 11, driving a plurality of first chain wheels 9 and second chain wheels 20 to rotate by the motor 11 through the chain 10, driving a second bevel gear 8 to rotate by the first chain wheels 9, driving an inclined shaft 5 and a roller 6 to rotate by the second bevel gear 8 through a first bevel gear 7, and enabling the base frame 1 to move downwards spirally along the bridge pier due to the rolling of the roller 6 because the roller 6 is obliquely arranged relative to the axis of the bridge pier; meanwhile, the chain 10 drives the cutting wheel 13 to rotate through the second chain wheel 20.

When the base frame 1 moves downwards in a spiral mode, the shovel plate 12 is attached to the surface of a pier, waterweeds, moss, silt and the like on the pier are shoveled off, and then the cutting wheel 13 cuts the waterweeds on the shovel plate 12 to avoid accumulation and winding on equipment; the probe rod 15 is attached to the cleaned surface of the pier, when the free end of the probe rod 15 passes through a pit on the surface of the pier, the third pressure spring pushes the plunger rod 17 to move outwards, the plunger rod 17 pushes the probe rod 15 to rotate, the free end of the probe rod 15 extends into the pit, the pressure of the third pressure spring is suddenly reduced at the moment, the pressure of the third pressure spring applied to the pressure sensor 18 is suddenly reduced, and therefore the sudden drop of the pressure value of the pressure sensor 18 at a certain point indicates that the point of the pier has a pit defect; when the free end of the probe 15 moves out of the pit, the probe 15 compresses the plunger rod 17, the third spring 19 compresses, and the probe 15 arranged obliquely can enable the probe 15 to smoothly move from the pit, so that the probe 15 is prevented from being bent or broken after extending into the pit.

According to the invention, the probe rod 15 is used for detecting the pits on the surface of the pier, the probe rod 15 can still probe into the pits to detect the defects of the pits even if silt, moss, aquatic weed and other obstacles are deposited in the pits, and the defects are not influenced by water flow fluctuation, so that the problems that the defects cannot be found when the traditional camera type detection device is shielded by aquatic weed, silt and moss on the surface of the pier, or the imaging stability and definition are influenced by water wave shaking or refraction are avoided, and the invention does not need to create an anhydrous environment, has low equipment cost and working cost, high detection speed and high working efficiency; in addition, the elastic probe rod 15 which is obliquely arranged can smoothly enter and exit the pit, so that the probe rod 15 can be prevented from being bent or broken, and the working continuity is good.