CN114425933A - Shock attenuation wheel that can promote plug-type pulse vortex scanning car performance - Google Patents

Abstract

A shock absorption wheel capable of improving the performance of a push-pull type pulse eddy current scanning vehicle comprises wheels, and is further provided with a steering bearing mechanism, a shock absorption mechanism and a braking device, wherein the steering bearing mechanism and the shock absorption mechanism are arranged side by side and fixedly connected, and the lower end of a positioning shaft of the steering bearing mechanism is fixedly connected with a corresponding detection vehicle ground plate; the damping mechanism is sleeved on the middle shaft of the wheel and limits the middle shaft to move only up and down in a buffering manner and not to move horizontally in the rotating process, and meanwhile, the damping mechanism is driven by the steering bearing mechanism to control the steering of the wheel; the braking device can be rotatably hinged on the damping mechanism and is used for limiting the rolling of the wheel. The damping system can avoid the influence of the uneven surface of the bottom plate of the storage tank on the detection process, meanwhile, the braking device can be used for parking and starting in time in the detection project, and the steering system can ensure that the vehicle can freely steer to avoid obstacles in the detection process.

Description

A shock-absorbing wheel capable of improving the performance of a push-pull pulsed eddy current scanning vehicle

technical field

The present invention relates to a shock-absorbing wheel. In particular, it relates to a shock-absorbing wheel capable of improving the performance of a push-pull pulse eddy current scanning vehicle.

Background technique

In the chemical industry, because the working environment and liquid level of atmospheric storage tanks are usually constantly changing, and most of the storage media are flammable, explosive, volatile and corrosive, problems such as material aging and corrosion will inevitably occur The occurrence of perforation and crack propagation, especially caused by the chemical and electrochemical effects of the environment, greatly reduces the safety of the storage tank, increases the incidence of storage medium leakage accidents, and causes economic losses and environmental pollution. . At present, foreign countries have formulated detailed inspection standards for the inspection of atmospheric metal storage tanks. At present, three main forms of inspection are routine inspection, online inspection and open tank inspection. However, the above detection techniques all have the characteristics of slow scanning speed and small scanning area in a single scan. The pulsed eddy current detection technology can increase the scanning area and scanning rate by adjusting the size of the sensor and the method of detection parameters, so it provides a more convenient and effective detection method for the bottom plate detection of large storage tanks. However, pulsed eddy current testing is greatly affected by factors such as the speed, stability, and lift-off height of the testing process.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide a shock-absorbing wheel capable of improving the performance of the push-pull pulsed eddy current scanning vehicle, which can improve the detection efficiency and accuracy of the pulsed eddy current technology, in order to solve the problems existing in the prior art.

The technical solution adopted in the present invention is: a shock-absorbing wheel capable of improving the performance of a push-pull pulse eddy current scanning vehicle, comprising a wheel, a steering bearing mechanism, a shock-absorbing mechanism and a braking device, wherein the steering The bearing mechanism and the damping mechanism are arranged side by side and are fixedly connected, and the lower end of the positioning shaft of the steering bearing mechanism is fixedly connected with the corresponding detection vehicle floor; the damping mechanism is sleeved on the central axis of the wheel , and restricts the center shaft to only move up and down buffering, but cannot move horizontally during the rotation process, and the damping mechanism controls the steering of the wheel under the drive of the steering bearing mechanism; the braking device can rotate The hinge is connected to the damping mechanism to limit the rolling of the wheel.

The steering bearing mechanism includes a shaft sleeve with a through hole that penetrates up and down, an upper bearing and a lower bearing respectively fixed on the upper end and the lower end of the shaft sleeve, and the upper end of the positioning shaft fixed on the detection vehicle chassis penetrates through the shaft sleeve. The through hole of the shaft sleeve is limited by nuts at both ends of the positioning shaft, and the shaft sleeve rotates with the positioning shaft as the central axis.

The shock absorbing mechanism includes a shock absorbing plate whose one side is fixedly connected with the shaft sleeve in the steering bearing mechanism, an oval hole is opened in the shock absorbing plate along the up-down direction, and the central axis of the wheel passes through the oval hole, A spring is embedded in the oval hole, the lower end of the spring is fixed at the lower part of the oval hole, the upper end of the spring is hooked on the central shaft, and the central shaft is supported by the spring and is in the In the elliptical hole, only up and down buffer motion can be performed.

The spring is axially parallel to the positioning shaft in the steering bearing mechanism.

The braking device is hinged on the shock-absorbing plate through a hinge, and the hinge is arranged at a position where the shock-absorbing plate is far from the steering bearing mechanism, and the braking device is an L-shaped paddle structure, The middle part of the L-shaped paddle is hinged on the hinge piece, the end of the long rod of the L-shaped paddle is exposed to the outside of the shock-absorbing plate, and the bent end of the L-shaped paddle corresponds to the middle of the The two or more baffles vertically arranged around the shaft are used to make the bent end stuck on the baffles by toggling the end of the long rod, so as to act as a brake on the wheels.

The wheels are acid and alkali resistant plastic wheels.

The invention provides a shock-absorbing wheel capable of improving the performance of a push-pull pulse eddy current scanning vehicle, which has the advantages of improving the applicability and corrosion resistance of the detection process, and can perform detection operations in uncleaned or incompletely cleaned storage tanks. At the same time, the design of the shock absorption system can avoid the influence of the uneven surface of the tank floor on the detection process. At the same time, the simple design of the braking device enables the detection project to park and start in time, and the steering system can ensure free steering during the detection process. Avoid obstacles. In conclusion, the patent of the present invention improves the detection efficiency and accuracy of the pulsed eddy current technology, facilitates the detection work of the detection personnel, and provides a more time-saving and convenient operation process.

Description of drawings

1 is a schematic structural diagram of a shock-absorbing wheel capable of improving the performance of a push-pull pulse eddy current scanning vehicle according to the present invention;

Figure 2 is a schematic diagram of the braking relationship between the braking device of the present invention and the wheel center axle.

pictured

1: Wheel 2: Steering bearing mechanism

2.1: Bushing 2.2: Upper bearing

2.3: Lower bearing 2.4: Positioning shaft

2.5: Nut 3: Damping mechanism

3.1: Damping plate 3.2: Oval hole

3.3: Spring 4: Brake

4.1: End of long rod 4.2: Bend end Bend end

5: Central axis 6: Hinged parts

7: Baffle

Detailed ways

The following describes in detail a shock-absorbing wheel capable of improving the performance of a push-pull pulse eddy current scanning vehicle according to the present invention with reference to the embodiments and the accompanying drawings.

As shown in FIG. 1 , a shock-absorbing wheel capable of improving the performance of a push-pull pulse eddy current scanning vehicle of the present invention includes a wheel 1 , and the wheel 1 is a plastic wheel that is resistant to acid and alkali corrosion. A steering bearing mechanism 2, a shock absorbing mechanism 3 and a braking device 4 are also provided, wherein the steering bearing mechanism 2 and the shock absorbing mechanism 3 are arranged side by side and fixedly connected, and the positioning shaft of the steering bearing mechanism 2 The lower end of 2.4 is fixedly connected with the corresponding detection vehicle site; the shock absorber mechanism 3 is sleeved on the central shaft 5 of the wheel 1, and the central shaft 5 can only be buffered up and down during the rotation process. , cannot move horizontally, and at the same time, the damping mechanism 3 controls the steering of the wheel 1 under the drive of the steering bearing mechanism 2; the braking device 4 can be hinged on the damping mechanism 3 to limit the Rolling of wheel 1.

The steering bearing mechanism 2 includes a shaft sleeve 2.1 with a through hole extending through the upper and lower ends, an upper bearing 2.2 and a lower bearing 2.3 respectively fixed on the upper and lower ends of the shaft sleeve 2.1, and the positioning on the detection vehicle site is fixed. The upper end of the shaft 2.4 penetrates the through hole of the shaft sleeve 2.1, and is limited by nuts 2.5 at both ends of the positioning shaft 2.4. The shaft sleeve 2.1 rotates with the positioning shaft 2.4 as the central axis.

The shock-absorbing mechanism 3 includes a shock-absorbing plate 3.1 whose one side is fixedly connected with the shaft sleeve 2.1 in the steering bearing mechanism 2. The shock-absorbing plate 3.1 is provided with an elliptical hole 3.2 in the up-down direction. The central axis 5 passes through the oval hole 3.2, and a spring 3.3 is embedded in the oval hole 3.2. The spring 3.3 is axially parallel to the positioning shaft 2.4 in the steering bearing mechanism 2. The lower end of the spring 3.3 is fixed at the lower part of the oval hole 3.2, the upper end of the spring 3.3 is hooked on the central shaft 5, and the central shaft 5 is supported by the spring 3.3 and is in the oval hole. In 3.2, only up and down buffer motion can be performed, that is, the wheel 1 can rotate freely under the condition that the spring 3.3 is stationary. The shock absorbing mechanism 3 can keep the horizontal distance between the vehicle body and the ground unchanged when the detection vehicle passes through bumpy road sections during driving.

As shown in FIG. 2 , the braking device 4 is hinged on the shock absorbing plate 3.1 through a hinge 6, and the hinge 6 is arranged at a position where the shock absorbing plate 3.1 is far from the steering bearing mechanism 2, The braking device 4 is an L-shaped paddle structure, the middle of the L-shaped paddle is hinged on the hinge 6, and the end 4.1 of the long rod of the L-shaped paddle is exposed to the shock absorbing plate 3.1. On the outside of the plate, the bent end 4.2 of the L-shaped paddle corresponds to two or more baffles 7 vertically arranged along the circumference of the central axis 5, and is used to move the end 4.1 of the long rod so that the bent end 4.2 can be locked. The baffle plate 7 acts as a brake on the wheel 1 to ensure the stability of detection during the scanning process.

The above-mentioned embodiments only represent the embodiments of the present invention, and the descriptions thereof are more specific and detailed, but should not be construed as a limitation on the scope of the patent of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the appended claims.

Claims (6)

1. A shock-absorbing wheel capable of improving the performance of a push-pull pulse eddy current scanning vehicle, comprising a wheel (1), characterized in that it is also provided with a steering bearing mechanism (2), a damping mechanism (3) and a braking device ( 4), wherein the steering bearing mechanism (2) and the damping mechanism (3) are arranged side by side and are fixedly connected, and the lower end of the positioning shaft (2.4) of the steering bearing mechanism (2) corresponds to the Detecting that the vehicle site is fixedly connected; the damping mechanism (3) is sleeved on the center shaft (5) of the wheel (1), and restricts the center shaft (5) to only buffer up and down during the rotation process can not move horizontally, while the damping mechanism (3) controls the steering of the wheel (1) under the driving of the steering bearing mechanism (2); the braking device (4) is rotatably hinged on the The shock absorbing mechanism (3) is used to limit the rolling of the wheel (1). 2 . The shock-absorbing wheel capable of improving the performance of a push-pull pulse eddy current scanning vehicle according to claim 1 , wherein the steering bearing mechanism ( 2 ) comprises a bushing with a through hole that penetrates up and down. 3 . (2.1), the upper bearing (2.2) and the lower bearing (2.3) respectively fixed on the upper end and the lower end of the shaft sleeve (2.1), the upper end of the positioning shaft (2.4) fixed on the inspection vehicle site penetrates the shaft The through hole of the sleeve (2.1) is limited by nuts (2.5) at both ends of the positioning shaft (2.4), and the shaft sleeve (2.1) rotates with the positioning shaft (2.4) as the central axis. 3. A shock-absorbing wheel capable of improving the performance of a push-pull pulse eddy current scanning vehicle according to claim 1, wherein the shock-absorbing mechanism (3) comprises a side and steering bearing mechanism (2) A shock-absorbing plate (3.1) is fixedly connected to the shaft sleeve (2.1) in the shock-absorbing plate (3.1), and an elliptical hole (3.2) is opened in the upper-lower direction in the shock-absorbing plate (3.1), and the central axis (5) of the wheel (1) penetrates through In the oval hole (3.2), a spring (3.3) is embedded in the oval hole (3.2), the lower end of the spring (3.3) is fixed at the lower part of the oval hole (3.2), and the upper end of the spring (3.3) The hook is on the central shaft (5), and the central shaft (5) can only perform up and down buffering movements in the oval hole (3.2) under the support of the spring (3.3). 4. A shock-absorbing wheel capable of improving the performance of a push-pull pulse eddy current scanning vehicle according to claim 3, characterized in that the spring (3.3) and the positioning shaft (2.4) in the steering bearing mechanism (2) are axially parallel. 5. The shock-absorbing wheel capable of improving the performance of a push-pull pulse eddy current scanning vehicle according to claim 3, wherein the braking device (4) is hinged on the On the shock-absorbing plate (3.1) of the shock-absorbing plate (3.1), the hinge (6) is arranged at a position where the shock-absorbing plate (3.1) is far away from the steering bearing mechanism (2), and the braking device (4) is an L-shaped paddle structure , the middle of the L-shaped paddle is hinged on the hinge (6), the end (4.1) of the long rod of the L-shaped paddle is exposed to the outside of the shock-absorbing plate (3.1), and the L-shaped paddle is exposed. The bent end (4.2) of the sheet corresponds to two or more baffles (7) vertically arranged along the circumference of the central axis (5), and is used to make the bent end by moving the end (4.1) of the long rod. (4.2) It is stuck on the blocking plate (7), and has a braking effect on the wheel (1). 6. A shock-absorbing wheel capable of improving the performance of a push-pull pulse eddy current scanning vehicle according to claim 1, wherein the wheel (1) is a plastic wheel that is resistant to acid and alkali corrosion.

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