A tooling suitable for current collector contact force measurement

Abstract

The utility model provides a kind of tool suitable for current collector contact force measurement, specifically relates to vehicle overhauling equipment field, including rectangular bottom plate and support plate, right trapezoidal shape reinforcing rib, contact probe, pressure sensor;Pressure sensor upper end is equipped with contact probe;Contact probe lower end is connected with screw, and screw is screwed with pressure sensor upper end;Pressure sensor side is connected with support plate by M4 screw;Support plate is connected with bottom plate perpendicularly, and is fixed by bolt;And reinforcing rib connects support plate side surface with bottom plate surface;Bottom surface and contact probe upper end distance 200mm.The utility model can measure current collector contact pressure, to ensure that current collection quality meets safety standards, improve detection accuracy and efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle maintenance equipment, specifically relating to a tooling suitable for measuring the contact force of a current collector. Background Technology

[0002] The current collection device is a key piece of equipment in rail transit vehicles used to introduce current from the overhead contact line or third rail; it is also called a current collector and functions similarly to the vehicle's "power plug." Current collection devices mainly include rod-type current collectors, pantograph-type current collectors, side-contact current collectors, and rail-type current collectors. Pantographs are suitable for supplying power to the overhead contact line, while current collector shoes are used for supplying power to the third rail. Whether the contact force between the current collector shoe and the third rail meets the standards is crucial to the stability of the power supply; therefore, the contact force needs to be measured to ensure that the current collection quality meets safety standards. Traditional manual measurement methods (spring scales and steel rulers) have low accuracy, are easily influenced by subjective factors, have large errors, and poor repeatability. Fixed force measuring stands are also used. However, they lack portability: large size and heavy weight, making them difficult to use flexibly at maintenance sites. Installation is complex, requiring adjustment of the current collector's position to fit the test stand, affecting measurement efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a tooling suitable for measuring the contact force of a current collector, so as to ensure that the current collection quality meets safety standards and improve detection accuracy and efficiency.

[0004] This utility model provides the following technical solution:

[0005] A fixture suitable for measuring the contact force of a current collector includes a rectangular base plate and a support plate, a right-angled trapezoidal reinforcing rib, a contact probe, and a pressure sensor;

[0006] The pressure sensor has a contact probe at the top; a screw is connected to the bottom of the contact probe, and the screw is threaded into the top of the pressure sensor; the side of the pressure sensor is connected to the support plate by an M4 screw.

[0007] The support plate is perpendicularly connected to the base plate and fixed with bolts; and the reinforcing ribs connect the side of the support plate to the surface of the base plate.

[0008] The distance between the bottom surface of the base plate and the top of the contact probe is 200mm.

[0009] Preferably, the screw is surrounded by an M6 nut; the contact probe, screw and M6 nut are integrally formed and made of stainless steel.

[0010] Preferably, the reinforcing ribs connect the side of the support plate to the surface of the base plate with bolts.

[0011] Preferably, the base plate, support plate, and reinforcing ribs are all made of 10mm thick aluminum plates.

[0012] Preferably, the base plate has screw holes on both sides; it also includes a hollow support tube, which has several limiting holes from top to bottom that match the screw holes; the base plate has screw holes on both sides; the screw holes and the limiting holes are connected by hand-tightening bolts.

[0013] Preferably, the support tube is also provided with a movable plate; each side of the support tube is provided with two guide grooves with upper openings, and a positioning post is formed between the two guide grooves.

[0014] The movable plate has strip-shaped positioning holes at both ends, and the positioning holes are fitted onto the positioning posts between the two guide grooves;

[0015] Furthermore, the two ends of the movable plate are provided with movable limiting holes, which are connected to the limiting holes by hand-tightening bolts.

[0016] Preferably, the base plate has two screw holes on each side; the hollow support tube has 3-6 pairs of limiting holes on each side from top to bottom.

[0017] The beneficial effects of this utility model are:

[0018] 1. This device solves the problem of large errors in traditional manual measurement methods. It enables rapid installation and measurement, reduces the number of times the current collector is disassembled and reassembled, and significantly shortens maintenance time;

[0019] 2. This application provides a lightweight and high-precision current collector contact force measurement fixture, which reduces the static contact force error rate, has high durability, and solves the problems of data distortion and cumbersome operation of traditional measurement fixtures. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is the front view of the device;

[0022] Figure 2 This is a perspective view of the device;

[0023] Figure 3 This is a schematic diagram of the device in measurement mode;

[0024] Figure 4 This is a diagram of the second embodiment of the device;

[0025] Figure 5 This is an exploded view of the second embodiment of the device.

[0026] The following are marked in the diagram: 1. Base plate; 2. Support plate; 3. Reinforcing rib; 4. Pressure sensor; 5. Contact probe; 6. M6 nut; 7. Screw; 8. Support tube; 9. Guide groove; 10. Positioning post; 11. Moving plate; 12. Positioning hole; 13. Hand-tightening bolt; 14. M4 screw; 15. Carbon sliding plate. Detailed Implementation

[0027] Example: Figures 1 to 3 A tooling for measuring the contact force of a current receiver includes a rectangular base plate 1 and a support plate 2, a right-angled trapezoidal reinforcing rib 3, a contact probe 5, and a pressure sensor 4. The pressure sensor 4 has a traditional cuboid structure and outputs pressure data via built-in Bluetooth or a wired connection to an external output device. Alternatively, the pressure sensor 4 can be a single, directly readable device, such as a pressure measuring device with a display, which is existing technology and its principle will not be elaborated further. This application aims to provide a novel tooling structure for measurement. The pressure sensor 4 has a contact probe 5 at its upper end. A screw 7 is connected to the lower end of the contact probe 5, and the screw 7 is threadedly connected to the upper end of the pressure sensor 4. The screw 7 connects to the pressure sensor 4, transmitting the pressure data received by the contact probe 5 to the pressure sensor 4. To facilitate maintenance and replacement of the contact probe 5, an M6 nut 6 is provided around the screw 7 for easy disassembly. The contact probe 5, screw 7, and M6 nut 6 are integrally formed and made of stainless steel, improving the lifespan of the device.

[0028] Pressure sensor 4 is connected to support plate 2 via M4 screw 14 on its side; see appendix for details. Figures 1 to 3 The pressure sensor 4 is connected to the support plate 2 by four M4 screws 14. It should be noted that the distance between the bottom surface of the base plate 1 and the upper end of the contact probe 5 is preferably 200mm, and the distance between the bottom surface of the mounting base and the contact probe is 200mm. This distance is the distance from the contact rail or tooling to the carbon slide contact surface when it is in the working position. Under this distance, the contact force measured is the static contact force of the current collector in the working position. Of course, the distance between the bottom surface of the base plate 1 and the upper end of the contact probe 5 can also be selected according to the actual situation.

[0029] See Figure 1 to Figure 3The support plate 2 is perpendicularly connected to the base plate 1 and fixed with bolts; the reinforcing rib 3 connects the side of the support plate 2 to the surface of the base plate; the reinforcing rib 3 internally connects the side of the support plate 2 to the surface of the base plate 1 with bolts, thus achieving the connection and fixation of the support plate 2, base plate 1, and reinforcing rib 3; the base plate 1, support plate 2, and reinforcing rib 3 are all made of 10mm aluminum plate. The all-aluminum structure (mounting base, support plate, reinforcing rib) achieves a weight reduction of over 50%, and with the stainless steel probe and rigid force transmission structure (screw-connected pressure sensor), the static contact force error rate is <2%. Its modular design supports quick assembly and disassembly, and the stainless steel probe ensures durability of over 100,000 cycles, significantly solving the problems of data distortion and cumbersome operation of traditional measuring fixtures. It is particularly suitable for rapid maintenance of rail transit current collectors and batch testing on production lines, increasing measurement efficiency by 70% while reducing maintenance costs by 40%; it also solves the problem of large errors in traditional manual measurement methods, achieving accurate quantitative measurement of contact force. It provides unified measurement methods and standards to eliminate individual differences caused by manual measurement, ensuring the comparability of measurement results obtained by different maintenance personnel and in different maintenance locations. Optimized tooling structure design enables rapid installation and measurement, reducing the number of times the current collector is disassembled and reassembled, and significantly shortening maintenance time. Through modular design, the same tooling can be adapted to different types (such as side contact and bottom contact) and different models of current collectors.

[0030] Measurement process: such as Figure 3 As shown, the current collector is installed laterally on the test bench in its actual on-vehicle configuration. With one hand, slowly pull the carbon sliding plate from its free position to near the working position, ensuring the contact surface of the carbon sliding plate is away from the side of the test bench. With the other hand, place the force-measuring fixture in position, ensuring one end is parallel and against the test bench. Slowly release the force, allowing the contact probe of the fixture to abut against the contact surface of the carbon sliding plate. For side-contact current collectors, the contact force between the upper and lower sliding shoes is generally required to be 150N ± 30N (taking a monorail project as an example). Record the value measured by the pressure sensor at this point. Then, stabilize the force-measuring fixture with one hand, and with the other hand, slowly pull the carbon sliding plate away, remove the fixture, and finally release the carbon sliding plate back to its free position. Example

[0031] Based on Example 1, such as Figure 4 and Figure 5 To facilitate height adjustment of the fixture, screw holes are provided on both sides of the base plate 1; it also includes a hollow support cylinder 8, which has several limiting holes from top to bottom that match the screw holes; the screw holes and the limiting holes are connected by hand-tightening bolts 13; by changing the position of the screw holes on the side of the base plate 1 and the limiting holes on the side of the support cylinder 8, the height of the base plate 1 can be changed, which facilitates the needs of measuring different heights; in order to improve stability and the versatility of height adjustment, two screw holes are provided on each side of the base plate 1; the hollow support cylinder 8 has 3-6 pairs of limiting holes on each side from top to bottom.

[0032] While the above allows for adjustment of the test height, to further improve convenience in actual work, a movable plate 11 is also provided inside the support cylinder 8. The movable plate 11 is adjusted to a certain position, and the base plate 1 is placed directly on it for immediate use. This allows for testing needs of different specifications and positions, improving convenience. To adjust the movable plate 11, two upper-opening guide grooves 9 are provided on each side of the support cylinder 8, forming a positioning post 10 between the two guide grooves 9. The movable plate 11 has strip-shaped positioning holes 12 at both ends, which are fitted onto the positioning post 10 between the two guide grooves 9. The positioning post 10 guides the movable plate 11, allowing it to move up and down. Motion limiting holes are provided on both ends of the movable plate 11, and these holes are connected to the limiting holes by hand-tightening bolts 13 to fix the position of the movable plate 11.

[0033] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tooling suitable for measuring the contact force of a current collector, characterized in that: It includes a rectangular base plate and support plate, a right-angled trapezoidal reinforcing rib, a contact probe, and a pressure sensor; The pressure sensor has a contact probe at the top; a screw is connected to the bottom of the contact probe, and the screw is threaded into the top of the pressure sensor; the side of the pressure sensor is connected to the support plate by an M4 screw. The support plate is perpendicularly connected to the base plate and fixed with bolts; and the reinforcing ribs connect the side of the support plate to the surface of the base plate. The distance between the bottom surface of the base plate and the top of the contact probe is 200mm.

2. The tooling for measuring the contact force of a current collector according to claim 1, characterized in that: An M6 nut is provided around the screw; the contact probe, screw and M6 nut are integrally formed and made of stainless steel.

3. The tooling for measuring the contact force of a current collector according to claim 1, characterized in that: The reinforcing ribs connect the side of the support plate to the surface of the base plate with bolts.

4. The tooling for measuring the contact force of a current collector according to claim 1, characterized in that: The base plate, support plate, and reinforcing ribs are all made of 10mm thick aluminum plates.

5. The tooling for measuring the contact force of a current collector according to claim 4, characterized in that: The base plate has screw holes on both sides; it also includes a hollow support tube with several limiting holes from top to bottom that match the screw holes; the base plate has screw holes on both sides; the screw holes and the limiting holes are connected by hand-tightening bolts.

6. The tooling for measuring the contact force of a current collector according to claim 5, characterized in that: The support tube is also equipped with a movable plate; each side of the support tube has two guide grooves with upper openings, and a positioning post is formed between the two guide grooves; The movable plate has strip-shaped positioning holes at both ends, and the positioning holes are fitted onto the positioning posts between the two guide grooves; Furthermore, the two ends of the movable plate are provided with movable limiting holes, which are connected to the limiting holes by hand-tightening bolts.

7. The tooling for measuring the contact force of a current collector according to claim 6, characterized in that: The base plate has two screw holes on each side; the hollow support tube has 3-6 pairs of limiting holes on each side from top to bottom.

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