Bearing frame for calibrating wheel damage detection device

Abstract

The utility model discloses a bearing frame for calibrating a wheel damage detection device, and relates to the field of sensor calibration. The bearing frame for calibration of the wheel damage detection device comprises a support and fixing plates, the fixing plates are fixedly installed at the two ends of the bottom of the support, clamping blocks are slidably installed on the surfaces of the fixing plates, round holes are formed in the surfaces of the clamping blocks and the surfaces of the fixing plates, and limiting rods are slidably installed on the surface of the support. The cross section of the limiting rod is matched with the round hole and is the same as the round hole in area, the limiting rod is aligned with the round hole in the surface of the fixing plate, pressing plates are slidably installed at the two ends of the support, elastic pieces are arranged between the pressing plates and the support, supporting plates are fixedly installed on the surfaces of the pressing plates, and force measuring devices are arranged on the surfaces of the supporting plates. The top of the dynamometer is provided with a stress module, and measuring instruments and tools for calibration are integrated on the surface of the support, so that each calibration work can be carried out according to standardization and normalization, and the accuracy of a detection result is improved.

Description

Technical Field

[0001] The utility model relates to the field of sensor calibration, in particular to a bearing frame for calibrating a wheel damage detection device. Background Technique

[0002] In view of the current demand and problem that the intelligent detection device of Shanghai Metro VEMS rail transit vehicles lacks a calibration system and a calibration scheme, this project will complete the calibration of the wheel damage detection device by redesigning and customizing special tooling fixtures to perform a stable and controllable loading process on the load system composed of the track and the strain gauge. Content of the Utility Model

[0003] The utility model provides a bearing frame for calibrating a wheel damage detection device, which solves the problems specifically mentioned in the above background technique.

[0004] To achieve the above objectives, the utility model is realized through the following technical solutions: A bearing frame for calibrating a wheel damage detection device includes a bracket and a fixing plate. The fixing plate is fixedly installed at both ends of the bottom of the bracket. A clamping block is slidably installed on the surface of the fixing plate. Round holes are opened on the surfaces of the clamping block and the fixing plate. A limiting rod is slidably installed on the surface of the bracket. The cross-section of the limiting rod fits and has the same area as the round hole. The limiting rod is aligned with the round hole on the surface of the fixing plate. Pressure plates are slidably installed at both ends of the bracket. An elastic member is arranged between the pressure plate and the bracket. A support plate is fixedly installed on the surface of the pressure plate. A force measuring device is arranged on the surface of the support plate. A force receiving module is arranged on the top of the force measuring device. A hydraulic jack is fixedly installed on the top of the bracket. An output end is arranged at the bottom of the hydraulic jack. The output end is aligned with the force receiving module. An oil pump is fixedly installed on the surface of the hydraulic jack. The oil pump is internally connected to the hydraulic jack. A piston rod is arranged on the surface of the oil pump. A lever is hinged to the surface of the piston rod. One end of the lever is hinged to the surface of the hydraulic jack. The clamping block is clamped tightly on the rail by sliding the clamping block, and the bracket is installed on the surface of the rail.

[0005] Preferably, the force measuring device is a standard force measuring instrument debugged by the staff, and a digital display screen is arranged on the surface. The displayed number is accurate to one decimal place. The result measured by the force measuring device is displayed through the digital display screen, and the display accuracy of the display screen is high.

[0006] Preferably, the elastic force of the elastic member between the pressure plate and the bracket on the pressure plate is equal to the gravity on the surface of the pressure plate, which is equal to the sum of the weights of the pressure plate, the support plate and the force measuring device. The elastic member serves as a support for the pressure plate, enabling the pressure plate to be stably arranged on the surface of the bracket. Moreover, during the measurement process, the elastic force of the elastic member offsets the gravity on the surface of the pressure plate, overcoming the error caused by the gravity on the surface of the pressure plate to the measurement result.

[0007] Preferably, arc-shaped grooves are provided at the bottoms of both ends of the bracket and on the inner walls of the clamping blocks. The arc-shaped grooves are in conformity with the shape of the rails in the area to be calibrated, improving the degree of fit between the clamping blocks and the rail surface and enhancing the fixing effect on the bracket.

[0008] Preferably, the bracket is made of a high-strength composite material and can withstand a maximum test force of KN. The bracket has high strength, low weight, and is convenient for carrying and transportation.

[0009] Preferably, the end of the lever away from the hydraulic jack is set as a cylinder, which is convenient for the staff to grasp and operate.

[0010] The utility model provides a bearing frame for calibrating a wheel damage detection device, having the following beneficial effects:

[0011] (1) For the bearing frame for calibrating the wheel damage detection device, the measuring instruments and tools for calibration are integrally arranged on the surface of the bracket, enabling each calibration work to be carried out in a standardized and regulated manner, improving the accuracy of the detection results. When calibration work is required, only the bracket needs to be installed on the surface of the detection device to be calibrated, which is convenient to operate. Moreover, the bracket is made of a composite material, has high strength, can withstand a large force, has low self-weight, and strong portability.

[0012] (2) For the bearing frame for calibrating the wheel damage detection device, clamping modules are arranged at the bottoms of both ends of the bracket, stably installing the bracket on the rail surface, preventing the bracket from shaking during the detection process, enabling the pressure plate to accurately contact the pressure sensor to be calibrated, making the measurement results more accurate, and improving the measurement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the utility model;

[0014] Figure 2 is a schematic structural diagram of the position of the pressure plate and the support plate of the utility model;

[0015] Figure 3 is a schematic structural diagram of the position of the clamping block and the fixing plate of the utility model;

[0016] Figure 4 is a schematic structural diagram of the position of the limiting rod and the round hole of the utility model.

[0017] In the figure: 1, bracket; 2, fixing plate; 3, clamping block; 4, limiting rod; 5, round hole; 6, arc-shaped groove; 7, pressure plate; 8, support plate; 9, force measuring device; 10, force receiving module; 11, hydraulic jack; 12, oil pump; 13, piston rod; 14, lever; 15, output end. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0019] Please refer to Figures 1-4 , the present utility model provides a technical solution: a bearing frame for calibrating a wheel damage detection device, including a bracket 1 and a fixing plate 2. The fixing plate 2 is fixedly installed at both ends of the bottom of the bracket 1. A clamping block 3 is slidably installed on the surface of the fixing plate 2. Circular holes 5 are opened on the surfaces of the clamping block 3 and the fixing plate 2. A limiting rod 4 is slidably installed on the surface of the bracket 1. The cross-section of the limiting rod 4 matches the circular hole 5 and has the same area. The limiting rod 4 is aligned with the circular hole 5 on the surface of the fixing plate 2. Pressing plates 7 are slidably installed at both ends of the bracket 1. An elastic member is provided between the pressing plate 7 and the bracket 1. A supporting plate 8 is fixedly installed on the surface of the pressing plate 7. A force measuring device 9 is arranged on the surface of the supporting plate 8. A force receiving module 10 is arranged at the top of the force measuring device 9. A hydraulic jack 11 is fixedly installed at the top of the bracket 1. An output end 15 is arranged at the bottom of the hydraulic jack 11. The output end 15 is aligned with the force receiving module 10. An oil pump 12 is fixedly installed on the surface of the hydraulic jack 11. The oil pump 12 is internally connected to the hydraulic jack 11. A piston rod 13 is arranged on the surface of the oil pump 12. A lever 14 is hinged to the surface of the piston rod 13. One end of the lever 14 is hinged to the surface of the hydraulic jack 11. The bracket 1 is installed on the surface of the railway track by sliding the clamping block 3 to clamp the railway track.

[0020] The force measuring device 9 is a standard force measuring instrument debugged by the staff, and a digital display screen is arranged on the surface. The displayed number is accurate to one decimal place. The result measured by the force measuring device 9 is displayed through the digital display screen, and the display accuracy of the display screen is high.

[0021] The elastic force of the elastic member between the pressing plate 7 and the bracket 1 on the pressing plate 7 is equal to the gravity on the surface of the pressing plate 7, which is equal to the sum of the weights of the pressing plate 7, the supporting plate 8 and the force measuring device 9. The elastic member serves as a support for the pressing plate 7, enabling the pressing plate 7 to be stably arranged on the surface of the bracket 1. Moreover, during the measurement process, the elastic force of the elastic member cancels out the gravity on the surface of the pressing plate 7, overcoming the error caused by the gravity on the surface of the pressing plate 7 to the measurement result.

[0022] Arc-shaped grooves 6 are opened at the bottom of both ends of the bracket 1 and the inner wall of the clamping block 3. The arc-shaped grooves 6 match the shape of the railway track in the area to be calibrated, improving the degree of fit between the clamping block 3 and the surface of the railway track and enhancing the fixing effect of the bracket 1.

[0023] The bracket 1 is made of a high-strength composite material, and the maximum test force it can withstand is 50 KN. The bracket 1 has high strength and light weight, facilitating carrying and transportation.

[0024] One end of the lever 14 away from the hydraulic jack 11 is set as a cylinder, which is convenient for the staff to grasp and operate.

[0025] This device is used to calibrate the pressure sensors on both sides of the subway track. By calibrating the pressure sensors, when the subway wheel passes by, the accurate pressure value of the wheel on the rail can be measured, so as to judge whether the subway wheel is damaged. First, use the hoisting tool to move the device to the rail surface, align and fit the bottoms of both ends of the bracket 1 with the rails on both sides, slide the clamping block 3 to make the clamping block 3 completely fit with the rail, align the clamping block 3 with the round hole 5 on the surface of the fixed plate 2. At this time, the limiting rod 4 moves vertically downward due to its own gravity. After moving, the limiting rod 4 passes through the round hole 5, generating a limit on the clamping block 3 to fix it. The clamping block 3 clamps the rail tightly, enabling the bracket 1 to be stably installed on the rail surface, ensuring the normal progress of the calibration work, making the measurement result more accurate, and improving the calibration efficiency. Moreover, arc-shaped grooves 6 are provided on the surfaces of both the clamping block 3 and the bracket 1. The shape of the arc-shaped groove 6 matches the shape of the rail surface, improving the degree of fit with the rail surface and enhancing the clamping effect of the clamping block 3 on the rail. After installing the frame on the rail surface, the staff pry the lever 14 to make it rotate. When the lever 14 rotates, it squeezes the piston rod 13 to move in the direction of the oil pump 12, squeezing the liquid inside the oil pump 12. After the liquid inside the oil pump 12 is squeezed, the output end 15 on the surface of the hydraulic jack 11 moves in the direction of the force measuring device 9 until it contacts the force receiving module 10 on the surface of the force measuring device 9, pushing the force measuring device 9 downward. The moving force measuring device 9 drives the support plate 8 and the pressing plate 7 downward. The moving pressing plate 7 contacts the pressure sensors on both sides of the rail and transmits the pressure from the output end 15 received by the force receiving module 10 to the pressure sensors on both sides of the rail, so that during the downward movement of the output end 15, the force measuring device 9 and the rail pressure sensors are loaded simultaneously. Since the elastic force of the elastic member between the pressing plate 7 and the bracket 1 is equal to the total gravity of the pressing plate 7 and its components, when the pressing plate 7 contacts the surface of the pressure sensor, the elastic force of the elastic member cancels the part of the self-gravity on the surface of the pressing plate 7, making the pressure applied by the pressing plate 7 on the surface of the pressure sensor equal to the pressure applied by the output end 15 on the force measuring device 9. By comparing the pressure value displayed on the surface of the force measuring device 9 with the pressure value measured by the rail pressure sensor, analyzing the error between the pressure value measured by the pressure sensor and the actual pressure value, the rail pressure sensor is calibrated. This device integrates the measuring instruments and pressure tools used in the calibration process of the pressure sensors on both sides of the rail on the surface of the bracket 1. The structural design is simple and convenient to operate. At the same time, the bracket 1 is made of composite materials, which not only has high strength but also has a small self-gravity, is convenient for transportation, and has high portability.

[0026] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A bearing frame for calibrating a wheel damage detection device, comprising a bracket (1) and a fixing plate (2), characterized in that: The fixed plate (2) is fixedly installed at both ends of the bottom of the bracket (1). A clamping block (3) is slidably installed on the surface of the fixed plate (2). Round holes (5) are formed on the surfaces of both the clamping block (3) and the fixed plate (2). A limiting rod (4) is slidably installed on the surface of the bracket (1). The cross-section of the limiting rod (4) is identical to and matches the round hole (5) in area. The limiting rod (4) is aligned with the round hole (5) on the surface of the fixed plate (2). Pressure plates (7) are slidably installed at both ends of the bracket (1). An elastic member is provided between the pressure plate (7) and the bracket (1). A support plate (8) is fixedly installed on the surface of the pressure plate (7). A force measuring device (9) is arranged on the surface of the support plate (8). A force receiving module (10) is arranged at the top of the force measuring device (9). A hydraulic jack (11) is fixedly installed at the top of the bracket (1). An output end (15) is arranged at the bottom of the hydraulic jack (11). The output end (15) is aligned with the force receiving module (10). An oil pump (12) is fixedly installed on the surface of the hydraulic jack (11). The oil pump (12) is internally communicated with the hydraulic jack (11). A piston rod (13) is arranged on the surface of the oil pump (12). A lever (14) is hinged to the surface of the piston rod (13). One end of the lever (14) is hinged to the surface of the hydraulic jack (11).

2. The load-bearing frame for calibrating a wheel damage detection device according to claim 1, characterized in that: The force measuring device (9) has a digital display screen arranged on its surface.

3. A bearing frame for calibrating a wheel damage detection device according to claim 1, characterized in that: The elastic force of the elastic member between the pressure plate (7) and the bracket (1) on the pressure plate (7) is equal to the gravity received on the surface of the pressure plate (7).

4. A bearing frame for calibrating a wheel damage detection device according to claim 1, characterized in that: Arc-shaped grooves (6) are formed at the bottom of both ends of the bracket (1) and on the inner wall of the clamping block (3). The arc-shaped grooves (6) match the shape of the rail in the area to be calibrated.

5. A bearing frame for calibrating a wheel damage detection device according to claim 1, characterized in that: The bracket (1) is made of a high-strength composite material and can withstand a maximum test force of 50 KN.

6. A bearing frame for calibrating a wheel damage detection device according to claim 1, characterized in that: The end of the lever (14) away from the hydraulic jack (11) is set as a cylinder.

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