1. An underwater bridge pier 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), a vertical shaft (5) and a transverse shaft (6) are arranged on the wheel carrier (3), a first roller (7) and a first chain wheel (8) are arranged on the vertical shaft (5), a second roller (9) is arranged on the transverse shaft (6), a section of worm (10) is processed on the vertical shaft (5), a worm wheel (11) is arranged on the transverse shaft (6), and the worm wheel (11) is meshed with the worm (10), the driving unit also comprises a chain (12), the chain (12) is meshed with a plurality of first chain wheels (8) simultaneously, and a motor (13) is arranged on one vertical shaft (5); the cleaning unit comprises a shovel plate (14) and a cutting wheel (15), one end of the shovel plate (14) 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 (16) is installed between the shovel plate (14) and the inner wall of the base frame (1), and the cutting wheel (15) is installed on the inner wall of the base frame (1) and located between the free end of the shovel plate (14) and the base frame (1); the detection unit comprises a feeler lever (17), one end of the feeler lever (17) 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 (18) fixed on the inner wall of the base frame (1) in an inclined mode, the inclined direction of the plunger cylinder (18) is opposite to the inclined direction of the feeler lever (17), a plunger rod (19) is installed in the plunger cylinder (18), a pressure sensor (20) is installed at the bottom of the plunger rod (19), a third spring (21) is installed between the plunger rod (19) and the pressure sensor (20), and the outer end of the plunger rod (19) is propped against the side wall of the feeler lever (17).

2. The underwater bridge pier detection device of claim 1, wherein the cleaning units and the detection units are arranged in two groups, the two groups of cleaning units are centrosymmetric, the two groups of detection units are centrosymmetric, and the cleaning units are located on the front sides of the detection units.

3. The underwater bridge pier detection device according to claim 1, wherein the base frame (1) is composed of two semicircular parts, and two ends of the two semicircular parts are connected through bolts.

4. The underwater bridge pier detection device according to claim 1, wherein a second chain wheel (22) is mounted on the cutting wheel (15), the second chain wheel (22) is meshed with the chain (12), and the chain (12) drives the cutting wheel (15) to rotate through the second chain wheel (22).

5. The underwater pier detection device according to claim 1, wherein an axial sliding groove (23) is formed in a side wall of the probe (17), and an end of the plunger rod (19) is placed in the sliding groove (23).

6. The underwater pier detection device according to claim 1, wherein two second rollers (9) of each group of driving units are symmetrically arranged around the worm gear (11), and the side wall of each second roller (9) is in the shape of a circular arc with the same radius as that of the pier.

7. The underwater bridge pier detection device according to claim 1, wherein the first roller (7) and the second roller (9) are made of rubber.

8. The underwater bridge pier detection device according to claim 1, wherein each group of detection units comprises a plurality of probes (17) and plunger rods (19) which are arranged up and down.

9. The underwater bridge pier detecting device according to claim 1, wherein a communicating hole (24) is formed at the bottom of the plunger cylinder (18).

10. The underwater bridge pier detecting device according to claim 1, wherein a waterproof cover (25) is externally installed on the motor (13).

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 an underwater pier detection device, which is used for solving the problems of poor adaptability of underwater pier detection equipment, high equipment cost and low working efficiency.

The technical scheme includes that the underwater pier detection device comprises an annular base frame, wherein a plurality of groups of driving units, a cleaning unit and a detection unit are arranged on the base frame, the driving units are uniformly distributed on the periphery of the base frame, each group of driving units comprises a radial rod which is slidably arranged on the base frame in a penetrating mode, a wheel carrier is arranged at the inner end of the radial rod, a first spring is arranged between the wheel carrier and the base frame, a vertical shaft and a transverse shaft are arranged on the wheel carrier, a first idler wheel and a first chain wheel are arranged on the vertical shaft, a second idler wheel is arranged on the transverse shaft, a section of worm is processed on the vertical shaft, a worm wheel is arranged on the transverse shaft and meshed with the worm, the driving unit further comprises a chain, the chain is meshed with the first chain wheels simultaneously, and a motor is arranged on one of the vertical shafts; 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.

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 second rollers of each group of driving units are symmetrically arranged by taking the worm wheel as a center, and the side walls of the second rollers are arc-shaped with the same radius as the pier.

The first roller and the second roller are made of rubber materials.

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 a half sectional view of the probe position.

Fig. 4 is a top view of the first roller and the second roller.

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, a plurality of groups of driving units are uniformly distributed on the circumference of the base frame 1, each group of driving units 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, a vertical shaft 5 and a horizontal shaft 6 are arranged on the wheel carrier 3, a first idler wheel 7 and a first chain wheel 8 are arranged on the vertical shaft 5, a second idler wheel 9 is arranged on the horizontal shaft 6, a section of worm 10 is processed on the vertical shaft 5, a worm wheel 11 is arranged on the horizontal shaft 6, the worm wheel 11 is meshed with the worm 10, the driving unit also comprises a chain 12, the chain 12 is meshed with the plurality of first chain wheels 8 at the same time, and a motor 13 is arranged on one vertical shaft 5; the cleaning unit comprises a shovel plate 14 and a cutting wheel 15, one end of the shovel plate 14 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 16 is installed between the shovel plate 14 and the inner wall of the base frame 1, and the cutting wheel 15 is installed on the inner wall of the base frame 1 and located between the free end of the shovel plate 14 and the base frame 1; the detection unit comprises a probe rod 17, one end of the probe rod 17 is hinged to the inner wall of the base frame 1, the other end of the probe rod 17 faces the direction opposite to the rotating direction of the base frame 1, the detection unit further comprises a plunger cylinder 18 which is obliquely fixed on the inner wall of the base frame 1, the oblique direction of the plunger cylinder 18 is opposite to the oblique direction of the probe rod 17, a plunger rod 19 is installed in the plunger cylinder 18, a pressure sensor 20 is installed at the bottom of the plunger rod 19, a third spring 21 is installed between the plunger rod 19 and the pressure sensor 20, and the outer end of the plunger rod 19 is abutted to the side wall.

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 15 is provided with a second chain wheel 22, the second chain wheel 22 is meshed with the chain 12, and the chain 12 drives the cutting wheel 15 to rotate through the second chain wheel 22.

An axial sliding groove 23 is formed in the side wall of the probe 17, and the end of the plunger rod 19 is placed in the sliding groove 23 to prevent the end of the plunger rod 19 from being separated from the probe 17.

The second rollers 9 of each group of driving units are symmetrically arranged by taking the worm wheel 11 as a center, and the side walls of the second rollers 9 are arc-shaped with the same radius as that of the pier, so that the second rollers 9 are better attached to the pier.

The first roller 7 and the second roller 9 are made of rubber materials and can elastically deform, and under the pressure of the first spring 4, the first roller 7 and the second roller 9 are tightly pressed on the surface of a pier and slightly deform, so that the contact surface between the first roller 7 and the pier, the second roller 9 and the pier is larger.

Each set of said detection units comprises a plurality of probes 17 and plunger rods 19 arranged one above the other, thus allowing a greater axial span to be detected.

The bottom of the plunger cylinder 18 is provided with a communication hole 24 for balancing the water pressure at the two ends of the plunger rod 19.

A waterproof cover 25 is arranged outside the motor 13.

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 first idler wheel 7 and the second idler wheel 9 on each group of driving units are pressed on the surface of the pier, under the action of the second spring 16, the free end of the shovel plate 14 is attached to the surface of the pier, under the action of the third spring 21, the plunger rod 19 abuts against the probe rod 17, and the free end of the probe rod 17 is attached to the surface of the pier; after the base frame 1 is installed, the chain 12 is wound around the plurality of first chain wheels 8 and the second chain wheels 22 in sequence and the chain 12 is tensioned; the detected value of the pressure sensor 20 is transmitted to the receiving device.

After the base frame 1 and the chain 12 are assembled, starting the motor 13, driving a plurality of first chain wheels 8 and second chain wheels 22 to rotate by the motor 13 through the chain 12, driving a first roller 7 to roll by the first chain wheels 8 through the vertical shaft 5, driving the base frame 1 to rotate around a pier through the first roller 7, driving a transverse shaft 6 and a second roller 9 to rotate by a worm 10 on the vertical shaft 5 and a worm wheel 11 in a meshed mode, driving the base frame 1 to move up and down through the second roller 9, and enabling the base frame 1 to move downwards spirally on the pier under the combined action of the first roller 7 and the second roller 9; the chain 12 simultaneously drives the cutting wheel 15 to rotate through the second chain wheel 22.

When the base frame 1 moves downwards in a spiral mode, the shovel plate 14 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 15 cuts the waterweeds on the shovel plate 14 to avoid accumulation and winding on equipment; the probe 17 is attached to the cleaned surface of the pier at the back, when the free end of the probe 17 passes through a pit on the surface of the pier, the third compression spring pushes the plunger rod 19 to move outwards, the plunger rod 19 pushes the probe 17 to rotate, the free end of the probe 17 extends into the pit, the pressure of the third compression spring is suddenly reduced at the moment, the pressure of the third compression spring applied to the pressure sensor 20 is suddenly reduced, and therefore the sudden drop of the pressure value of the pressure sensor 20 at a certain point indicates that the point of the pier has a pit defect; when the free end of the probe 17 moves out of the pit, the probe 17 compresses the plunger rod 19, the third spring 21 compresses, and the probe 17 arranged obliquely can enable the probe 17 to smoothly move from the pit, so that the probe 17 is prevented from being bent or broken after extending into the pit.

According to the invention, the probe 17 is used for detecting the pits on the surface of the pier, the probe 17 can be inserted into the pits, even if silt, moss, aquatic weed and other obstacles are deposited in the pits, the probe 17 can still be inserted into the pits to detect the defects of the pits, and is 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, is low in equipment cost and working cost, is high in detection speed and high in working efficiency; in addition, the elastic probe rod 17 which is obliquely arranged can smoothly enter and exit the pit, so that the probe rod 17 can be prevented from being bent or broken, and the working continuity is good.