Device for detecting performance of pantograph with single-arm double-slide-plate structure

Abstract

The invention discloses a single-arm double-slide plate structure pantograph performance detection device, and relates to the technical field of pantograph performance detection.The single-arm double-slide plate structure pantograph performance detection device comprises a detection bottom table, a single-arm pantograph is placed on the detection bottom table, two slide plates are symmetrically and fixedly connected to the single-arm pantograph, a detection assembly is arranged on the detection bottom table, and the detection assembly comprises a clamping block; the clamping block is inserted into the sliding plate, two rubber pads are symmetrically and fixedly connected to the inner surface of the clamping block, and a circular groove is formed in the rubber pad located at the top; through operation of the detection assembly, the weight of fluid used for increasing the load is accurately controlled through the micro water pump, continuous variable adjustment of the load can be achieved, and the problem that the precision of a traditional digital display spring scale is limited when the load is adjusted through a balancing weight with a fixed value or in a manual force application mode is solved. And the position of the digital display type weighing sensor can be freely adjusted and locked, so that the condition of inaccurate static contact pressure value caused by deviation and shaking of a factor display type spring scale in the detection process in the prior art is avoided.

Description

Technical Field

[0001] This invention relates to the field of pantograph performance testing technology, specifically to a pantograph performance testing device with a single-arm, double-slide structure. Background Technology

[0002] The pantograph is a key component for electric traction vehicles such as high-speed trains, subways, and trams to obtain electrical energy from the overhead contact line, and the single-arm double-slide structure is its common design form. To ensure the smooth operation of electric vehicles such as high-speed trains, subways, and trams, and to guarantee the continuity and minimal fluctuation of the current supplied by the pantograph, regular inspections of the pantograph are necessary. Static contact pressure measurement of the pantograph's contact plate is a crucial step. Its core purpose is to ensure that the contact force between the pantograph and the contact wire is within the normal range. Currently, in the static contact pressure test of the pantograph's contact plate, adjusting the plate load (to simulate actual contact pressure) often involves adding a counterweight to the bottom of a digital display spring scale attached to the plate, or manually pulling the spring scale to gradually move the plate away from its original contact position. Users need to observe the reading on the spring scale to determine the static contact pressure applied to the plate.

[0003] However, existing testing methods have significant drawbacks: Firstly, digital spring scales are only connected to the slide plate via a hanging method, making them prone to positional shifts when pressure is applied. Furthermore, during the application of counterweights or manual force, slight external vibrations or manual handling can cause wobbling. The measurement principle of digital spring scales is based on "axial force." If the hanging misalignment causes the spring scale and slide plate to be out of perpendicular (generating a lateral component force), the displayed value will deviate from the actual applied static contact pressure. If the counterweights wobble or the manual force is unstable, the spring scale will also be in a "dynamic force" state, with continuously fluctuating displayed values. Users can only record data based on subjective judgment, further increasing the randomness of the measurement results. Ultimately, the pressure measured by the spring scale cannot reflect the actual pressure of the target area under real working conditions. Secondly, the existing structure cannot achieve real-time and stable load adjustment. For example, when the counterweight is stacked, the load will "suddenly increase" (generate impact) the moment the counterweight contacts the sliding plate, which is difficult to meet the technical requirements of "continuously adjustable load and small fluctuation" for static contact pressure test. Besides the manual testing methods mentioned above, there is another way to test pantograph performance using specialized testing equipment. However, existing equipment typically requires removing the pantograph and placing it on a dedicated testing platform, generally used for factory testing of pantographs, and cannot test pantographs installed on vehicles. In addition to not being able to test installed pantographs, existing equipment for static contact pressure testing usually involves raising the pantograph and observing the tension in the cable connected to it. While the two testing methods are similar, they are not the same. Manual testing mainly simulates the pressure received by the pantograph under normal operating conditions, while equipment is used to test the maximum static pressure the pantograph can withstand during ascent.

[0004] To address this, a pantograph performance testing device with a single-arm, double-slide structure is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a pantograph performance testing device with a single-arm double-slide structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a pantograph performance testing device with a single-arm double-slide structure, comprising a testing base, on which a single-arm pantograph is placed, and two slides are symmetrically fixedly connected to the single-arm pantograph. A testing component is provided on the testing base, the testing component comprising a clamping block inserted into the slides, two rubber pads symmetrically fixedly connected to the inner surface of the clamping block, a circular groove being formed on the top rubber pad, a threaded tube fixedly connected to the top of the clamping block, a threaded post being threadedly connected to the threaded tube, a pressure block being fixedly connected to the bottom of the threaded post, a friction plate being fixedly connected to the bottom of the pressure block, a digital display load cell being fixedly connected to the bottom of the clamping block, a connecting rod being fixedly connected to the bottom of the digital display load cell, a water bag being fixedly connected to the bottom of the connecting rod, a water bucket being provided on the top of the testing base, a miniature water pump being fixedly connected to the top of the water bucket, a water pipe being fixedly connected to the top of the water bucket, and a water pipe being fixedly connected to the miniature water pump.

[0007] Furthermore, a bracket is fixedly connected to the top of the bucket, a sliding platform is slidably connected to the top of the bracket, a photoelectric laser emitter is fixedly connected to the top of the sliding platform, a fixing block is fixedly connected to the sliding platform, a threaded rod is threadedly connected to the bottom end of the fixing block, and a pressure block is fixedly connected to the end of the threaded rod near the bracket.

[0008] Furthermore, the clamping block is designed to be U-shaped.

[0009] Furthermore, both the pressure block and the friction plate are fitted into the circular groove, and the friction plate is pressed against the sliding plate.

[0010] Furthermore, the top of the threaded column extends beyond the top of the threaded tube.

[0011] Furthermore, the weighing end of the digital load cell faces downwards, and the weighing end of the digital load cell is connected to the connecting rod.

[0012] Furthermore, one water pipe passes through the water bucket and is fixedly connected to the miniature water pump, while the other end of the water pipe away from the miniature water pump is fixedly connected to the bottom of the water bag, and the bracket is set in a T shape.

[0013] Furthermore, the photoelectric laser emitter of the photoelectric laser emitter faces the direction of the slide plate.

[0014] Furthermore, the fixing block is set in an L-shape, and the second pressure block is pressed together with the bracket.

[0015] Compared with the prior art, the beneficial effects of the present invention are: By detecting the operation of the components, the position of the digital display weighing sensor can be freely adjusted and locked, avoiding the inaccurate static contact pressure values ​​caused by the offset and shaking of the digital display spring scale during the detection process in existing technologies.

[0016] By detecting the operation of the components, the weight of the fluid used to increase the load is precisely controlled by a micro water pump, enabling continuous variable adjustment of the load. This solves the accuracy limitations of traditional digital display spring scales that adjust the load by using fixed-value counterweights or manual force. Furthermore, the load application process of the fluid on the single-arm double-slide pantograph is smoothly transmitted, rather than suddenly increasing the weight by adding a heavy counterweight. This allows the digital display weighing sensor to provide real-time feedback on the current load, enabling users to accurately control the fluid supply based on the feedback, further improving the accuracy of pantograph sliding plate detection for electric vehicles.

[0017] By operating the detection component, a clear photoelectric laser mark can be directly mapped onto the single-arm double-slide pantograph to form a real-time detection position positioning reference. This allows users to quickly align the target test point, and users can adjust the position of the laser mark at any time according to different test requirements (such as testing the pressure in different areas of the single-arm double-slide pantograph), flexibly adapting to various test scenarios.

[0018] By detecting the operation of the components, load adjustment can be achieved simply by controlling the fluid transmission through a micro water pump, and position positioning can be quickly aligned using photoelectric laser markers, significantly reducing manual operation steps and physical exertion. At the same time, there is no need to repeatedly adjust the position and eliminate shaking interference, making the testing process smoother, thereby significantly shortening the static contact pressure performance time of the single-arm double-slide pantograph.

[0019] The clamping blocks allow for the use of pantographs of varying thicknesses and widths, thereby enhancing the versatility of the testing assembly for static contact pressure testing of single-arm, double-pantograph pantographs.

[0020] Each component has a modular structure, which makes it easy to disassemble and carry, allowing staff to directly set it on the installed pantograph for real-time on-site testing. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of the overall device of the present invention; Figure 2 This is a cross-sectional schematic diagram of the detection base, slide plate, and other structures of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle; Figure 4 This is a cross-sectional schematic diagram of the detection base, water bag, and other structures of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of point B in the middle; Figure 6 For the present invention Figure 5 Enlarged view of point C in the middle; Figure 7 For the present invention Figure 4 Enlarged view of point D; Figure 8 This is a schematic diagram showing the positions of the support, photoelectric laser emitter, and other structures of the present invention; Figure 9 This is an exploded view of the structure of the clamping block, rubber pad, photoelectric laser emitter, etc. of the present invention.

[0022] In the picture: 11. Testing platform; 12. Single-arm pantograph; 13. Slide plate; 21. Clamping block; 22. Rubber pad; 23. Circular groove; 24. Threaded pipe; 25. Threaded post one; 26. Pressure block one; 27. Friction plate; 28. Digital display load cell; 29. ​​Connecting rod; 210. Water bag; 211. Water bucket; 212. Miniature water pump; 213. Water pipe one; 214. Water pipe two; 215. Bracket; 216. Moving platform; 217. Photoelectric laser emitter; 218. Fixing block; 219. Threaded rod two; 220. Pressure block two. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0024] Among them, static contact pressure tests were conducted on the single-arm pantograph 12 and the sliding plate 13.

[0025] The embodiments provided by this invention: Please see Figures 1 to 9 As shown, a pantograph performance testing device with a single-arm double-slide structure includes a testing base 11, on which a single-arm pantograph 12 is placed, and two slides 13 are symmetrically fixedly connected to the single-arm pantograph 12.

[0026] A detection assembly is provided on the detection platform 11. The detection assembly includes a clamping block 21, which is inserted into the slide plate 13. Two rubber pads 22 are symmetrically fixed to the inner surface of the clamping block 21. A circular groove 23 is opened on the top rubber pad 22. A threaded tube 24 is fixedly connected to the top of the clamping block 21. A threaded post 25 is threadedly connected to the inner thread of the threaded tube 24. A pressure block 26 is fixedly connected to the bottom of the threaded post 25. A friction plate 27 is fixedly connected to the bottom of the pressure block 26. A digital display load cell 28 is fixedly connected to the bottom of the clamping block 21. A connecting rod 29 is fixedly connected to the bottom end of the digital display load cell 28. A water bag 210 is fixedly connected to the bottom end of the connecting rod 29. A water bucket 211 is provided on the top of the detection platform 11. A miniature water pump 212 is fixedly connected to the top of the water bucket 211. A water pipe 213 is fixedly connected to the top of the water bucket 211. The water pipe 213 passes through the water bucket 211 and is fixedly connected to the miniature water pump 212. A water pipe 214 is fixedly connected to the miniature water pump 212. The end of the water pipe 214 away from the miniature water pump 212 is fixedly connected to the bottom of the water bag 210. A bracket 215 is fixedly connected to the top of the water bucket 211. A sliding platform 216 is slidably connected to the top of the bracket 215. A photoelectric laser emitter 217 is fixedly connected to the top of the sliding platform 216. A fixing block 218 is fixedly connected to the sliding platform 216. A threaded rod 219 is threadedly connected to the bottom end of the fixing block 218. A pressure block 220 is fixedly connected to the end of the threaded rod 219 near the bracket 215.

[0027] Among them, the clamping block 21 is set in a U-shape, the pressure block 26 and the friction plate 27 are both inserted into the circular groove 23 and adapted to each other, and the friction plate 27 is pressed and fitted with the slide plate 13.

[0028] Among them, the top of the threaded column 25 extends out of the top of the threaded tube 24, and the protruding end is fixedly connected to a handle that is easy for manual gripping.

[0029] Among them: the digital display load cell 28 is a known existing technology. The weighing end of the digital display load cell 28 faces downward. The weighing end of the digital display load cell 28 is connected to the connecting rod 29. The digital display load cell 28 has a built-in strain gauge sensor and a control panel digital display screen on its outer surface. The strain gauge sensor will transmit the measured pressure to the external control panel digital display screen through an electrical signal. The digital display load cell 28 is the digital display screen of the spring scale in the prior art.

[0030] Among them: the micro water pump 212 draws fluid from the inside of the water bucket 211 through the first water pipe 213, and pumps the drawn fluid into the inside of the water bag 210 through the second water pipe 214; the bracket 215 is set in a T shape, and the second pressure block 220 is squeezed and fitted with the bracket 215.

[0031] Among them: the photoelectric laser emitter 217 is a known existing technology, the photoelectric laser emitting end of the photoelectric laser emitter 217 faces the direction of the slide plate 13, and the fixing block 218 is set in an L shape.

[0032] When using the testing component, specifically when a static contact pressure test needs to be performed on the slide plate 13, the user's operation of the testing component is as follows: The user activates the photoelectric laser emitter 217, causing it to emit a vertical photoelectric laser beam towards the slide plate 13. The laser beam is projected onto the slide plate 13, displaying a vertical mark. The user then loosens the threaded rod 219, causing it to move away from the bracket 215 within the fixed block 218. Simultaneously, the threaded rod 219 moves the pressure block 220 away from the bracket 215, ensuring it no longer contacts the bracket 215. The user then moves the stage 216 on the bracket 215, causing it to move the photoelectric laser emitter 217 horizontally on the bracket 215. At this time, the position of the mark of the photoelectric laser emitter 217 on the slide plate 13 will change synchronously. When the position of the mark on the slide plate 13 moves to the position where the user needs to perform a static contact pressure test on the slide plate 13, the user no longer moves the photoelectric laser emitter 217 and tightens the threaded rod 219. This causes the threaded rod 219 to drive the pressure block 220 to move towards the bracket 215 within the fixed block 218. As the threaded rod 219 is tightened, the pressure block 220 abuts against and squeezes the bracket 215. Then, through the friction generated by the pressure block 220 and the bracket 215 and the thrust provided by the tightening of the threaded rod 219, the position of the photoelectric laser emitter 217 on the bracket 215 is fixed, that is, the position of the photoelectric laser emitter 217 on the slide plate 13 is fixed.

[0033] The user then loosens the threaded post 25 on the threaded tube 24, causing the threaded post 25 to move the pressure block 26 and friction plate 27 upwards until the friction plate 27 rises into the threaded tube 24. At this point, the user inserts the clamping block 21 and moves it to the position of the photoelectric laser marking on the slide plate 13. At this point, both rubber pads 22 are in contact with the slide plate 13, and both rubber pads 22 undergo elastic deformation. When the clamping block 21 is inserted into the slide plate 13 to the inner surface end of the slide plate 13 and the clamping block 21, the user then tightens the threaded post 25, causing the threaded post 25 to move the pressure block 26 and friction plate 27 downwards within the threaded tube 24 until the friction plate 27 is inserted into the circular groove 23. At this point, the friction plate 27 abuts against and presses against the top surface of the slide plate 13, generating heat through the pressure between the friction plate 27 and the slide plate 13. The frictional force and the thrust provided by the screw tightening of the threaded column 25 fix the position of the clamp 21 on the slide plate 13, that is, fix the position of the digital display load cell 28 at the bottom of the slide plate 13. At this time, the user controls the micro water pump 212 to start. The micro water pump 212 draws fluid from the inside of the water tank 211 through the water pipe 213 and pumps the drawn fluid into the water bag 210 through the water pipe 214. As the micro water pump 212 continues to run, the fluid inside the water bag 210 continues to increase. The weight of the water bag 210, together with the connecting rod 29 and the clamp 21, pulls the slide plate 13, causing the slide plate 13 to gradually leave the original contact position. When the pantograph slide plate just leaves the contact wire, the reading displayed by the digital display load cell 28 is the static contact pressure value of the pantograph slide plate.

[0034] Since the static contact pressure test of the skateboard 13 involves multiple parts of the skateboard 13, when static contact pressure tests are needed on other parts of the skateboard 13, the user uses a miniature water pump 212 to draw fluid from the water bag 210 into the water bucket 211. Then, the user loosens the threaded rod 219 to release the position lock of the photoelectric laser emitter 217. The user then adjusts the position of the photoelectric laser emitter 217 on the bracket 215 so that the imprint of the photoelectric laser emitter 217 on the skateboard 13 moves to the static contact pressure test position of the skateboard 13. At this point, the user tightens the threaded rod 219, causing the pressure block 220 to again contact and press against the bracket 215, locking the position of the photoelectric laser emitter 217 on the bracket 215 and locking the imprint of the photoelectric laser emitter 217 on the skateboard 13.

[0035] The user then loosens the threaded post 25, causing the threaded post 25 to move the pressure block 26 and friction plate 27 to rise inside the threaded tube 24. When the friction plate 27 rises to a position where it no longer contacts the slide plate 13, the user pushes the clamping block 21, causing it to slide on the slide plate 13. When the clamping block 21 slides to the position of the photoelectric laser mark on the slide plate 13, the user stops pushing the clamping block 21 and tightens the threaded post 25, causing the friction plate 27 to descend back to a position where it contacts and presses against the slide plate 13, locking the position of the clamping block 21 on the slide plate 13.

[0036] At this time, the user restarts the micro water pump 212 to pump the fluid inside the water bucket 211 into the water bag 210 to conduct static contact pressure tests on other parts of the slide plate 13.

[0037] It should be noted that in the above process, since the clamp 21 is inserted into the slide plate 13 by the compression of the two rubber pads 22, and there is a sufficiently deep insertion space between the clamps 21 in the horizontal direction, the clamp 21 can be used for slide plates 13 of different thicknesses and widths, thereby enhancing the versatility of the detection component for static contact pressure testing of the slide plate 13.

[0038] In summary, by monitoring the operation of the component, the following beneficial effects can be achieved: By operating the detection component, the position of the digital display weighing sensor 28 can be freely adjusted and locked, avoiding the inaccurate static contact pressure values ​​caused by the offset and shaking of the digital display spring scale during the detection process in the prior art.

[0039] By detecting the operation of the components, the weight of the fluid used to increase the load is precisely controlled by the micro water pump 212, which enables continuous variable adjustment of the load. This solves the accuracy limitations of traditional digital display spring scales that adjust the load by using a fixed value of counterweight or manual force. Furthermore, the load applied by the fluid on the pantograph of the pantograph 13 is transmitted smoothly, rather than suddenly increasing the weight by adding a heavy counterweight. This allows the digital display weighing sensor 28 to provide real-time feedback on the current load, enabling the user to accurately control the fluid supply based on the feedback, further improving the detection accuracy of the pantograph pantograph 13 of electric vehicles.

[0040] By operating the detection component, a clear photoelectric laser mark can be directly mapped onto the pantograph of the slide plate 13 to form a real-time detection position positioning reference, allowing users to quickly align with the target test point. Furthermore, users can adjust the position of the laser mark at any time according to different test requirements, such as testing the pressure in different areas of a single-arm double-slide pantograph, flexibly adapting to various test scenarios.

[0041] In traditional testing, users need to repeatedly move, stack, or disassemble counterweights and adjust the manual force applied. They also need to frequently check whether the digital display spring scale is off-center, which is cumbersome and time-consuming. By detecting the operation of the components, load adjustment can be achieved simply by controlling the fluid transmission through the micro water pump 212, and position positioning can be quickly aligned using photoelectric laser markers, significantly reducing manual operation steps and physical exertion. At the same time, there is no need to repeatedly adjust the position and eliminate shaking interference, making the testing process smoother, thereby significantly shortening the static contact pressure performance time of the single-arm double-slide pantograph.

[0042] The clamp 21 allows for the use of slide plates 13 of different thicknesses and widths, thereby enhancing the versatility of the detection assembly for static contact pressure testing of single-arm double-slide pantographs.

[0043] All components of this solution are modularly designed, facilitating easy disassembly and assembly as well as portability, allowing for rapid on-site deployment by personnel. It is suitable for scenarios involving the routine inspection of pantographs already installed on vehicles.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pantograph performance testing device with a single-arm double-slide structure, comprising a testing base (11), on which a single-arm pantograph (12) is placed, and two slides (13) are symmetrically fixedly connected to the single-arm pantograph (12), characterized in that: A detection assembly is provided on the detection base (11). The detection assembly includes a clamping block (21), which is inserted into the slide plate (13). Two rubber pads (22) are symmetrically fixedly connected to the inner surface of the clamping block (21). A circular groove (23) is opened on the top rubber pad (22). A threaded tube (24) is fixedly connected to the top of the clamping block (21). A threaded post (25) is threadedly connected to the inside of the threaded tube (24). A pressure block (26) is fixedly connected to the bottom of the threaded post (25). The bottom of the pressure block (26) is fixedly connected to... There is a friction plate (27), a digital display weighing sensor (28) is fixedly connected to the bottom of the clamping block (21), a connecting rod (29) is fixedly connected to the bottom of the digital display weighing sensor (28), a water bag (210) is fixedly connected to the bottom of the connecting rod (29), a water bucket (211) is set on the top of the detection platform (11), a micro water pump (212) is fixedly connected to the top of the water bucket (211), a water pipe (213) is fixedly connected to the top of the water bucket (211), and a water pipe (214) is fixedly connected to the micro water pump (212).

2. The pantograph performance testing device with a single-arm double-slide structure according to claim 1, characterized in that: A bracket (215) is fixedly connected to the top of the bucket (211). A sliding platform (216) is slidably connected to the top of the bracket (215). A photoelectric laser emitter (217) is fixedly connected to the top of the sliding platform (216). A fixing block (218) is fixedly connected to the sliding platform (216). A threaded rod (219) is threadedly connected to the bottom end of the fixing block (218). A pressure block (220) is fixedly connected to the end of the threaded rod (219) near the bracket (215).

3. The pantograph performance testing device with a single-arm double-slide structure according to claim 1, characterized in that: The clamp (21) is set to a U-shape.

4. The pantograph performance testing device with a single-arm double-slide structure according to claim 1, characterized in that: The pressure block (26) and friction plate (27) are both inserted into the circular groove (23) and fitted together. The friction plate (27) is pressed against the slide plate (13).

5. The pantograph performance testing device with a single-arm double-slide structure according to claim 1, characterized in that: The top of threaded column 1 (25) extends out of the top of threaded tube (24).

6. The pantograph performance testing device with a single-arm double-slide structure according to claim 1, characterized in that: The weighing end of the digital load cell (28) faces downwards and is connected to the connecting rod (29).

7. The pantograph performance testing device with a single-arm double-slide structure according to claim 1, characterized in that: Water pipe 1 (213) passes through water bucket (211) and is fixedly connected to micro water pump (212). Water pipe 2 (214) is fixedly connected to the bottom of water bag (210) at the end away from micro water pump (212). The bracket (215) is set in T shape.

8. The pantograph performance testing device with a single-arm double-slide structure according to claim 2, characterized in that: The photoelectric laser emitter (217) has its photoelectric laser emitting end facing the slide plate (13).

9. The pantograph performance testing device with a single-arm double-slide structure according to claim 2, characterized in that: The fixing block (218) is set in an L shape, and the pressure block two (220) is pressed together with the bracket (215).

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