Catenary channel positioning device

Abstract

The utility model discloses an overhead line system channel positioning device, which relates to the field of overhead line system channel positioning technology and comprises a support, sliding rails arranged on two sides of the support, rectangular blocks arranged in the sliding rails, supporting columns arranged in the rectangular blocks in a staggered manner, limiting pipes arranged on the outer sides of the supporting columns, third elastic pieces arranged between the limiting pipes and the supporting columns, and a movable plate fixedly arranged above the limiting pipes. A rectangular groove is formed in the upper end of the movable plate, a connecting plate is slidably connected into the rectangular groove, a bidirectional lead screw is rotationally connected into the rectangular groove in the transverse direction, a first limiting rod parallel to the bidirectional lead screw is fixedly connected into the rectangular groove, the first limiting rod penetrates through the connecting plate to be slidably connected with the connecting plate, and the bidirectional lead screw penetrates through the connecting plate to be in threaded connection with the connecting plate. A detection groove is formed in the upper end of the mounting plate, and a sliding plate is arranged on the inner wall of the detection groove and used for adjusting the distance between the channel and the inner wall of the detection groove. The application has the effect of improving the detection convenience of the device.

Description

Technical Field

[0001] This utility model relates to the field of contact wire channel positioning technology, and in particular to a contact wire channel positioning device. Background Technology

[0002] Currently, as the technical requirements for the construction of pre-embedded contact wire channels in high-speed railway tunnels become increasingly stringent, numerous instances of channels being scrapped due to insufficient installation precision are emerging. Discussions on re-installation solutions for scrapped pre-embedded channels are not only costly and difficult to construct, causing significant damage to the tunnel lining, but also jeopardize the safety of subsequent high-speed railway operations. Traditional positioning devices use steel plates with fixed detection slots to measure the width of the channels.

[0003] Related technology can be found in Chinese Patent No. CN220881093U, which discloses a welding and positioning mechanism for pre-embedded tunnel channels. This utility model discloses a welding and positioning mechanism for pre-embedded tunnel channels, comprising several supports arranged in parallel, several positioning plates mounted on and movable on the supports for supporting the channel, and end plates located at the ends of the supports for positioning the end of the channel. The upper ends of the positioning plates are provided with slots corresponding to the supports for securing the channel. During welding, the end of the pre-embedded channel is first placed on the supports and in contact with the end plates. The middle position of the channel is then secured in the slots for precise positioning. After positioning, the channel is welded and fixed using reinforcing bars. After welding, the pre-embedded channel is removed from the fixture. Positioning of the pre-embedded tunnel channel can be achieved by one person, making the operation simple. Furthermore, the use of this fixture standardizes the installation and construction of pre-embedded channels, effectively improving construction quality, greatly reducing defects in pre-embedded tunnel channels, and significantly reducing the cost of eliminating defects in tunnel channel quality.

[0004] Regarding the aforementioned technologies, during the device testing process, the distance between the other two slots on the device positioning plate is fixed. When testing slots of different widths, it is necessary to replace the device with one that has a different slot distance for testing, which makes the testing process quite troublesome. Utility Model Content

[0005] To improve the convenience of device testing, this application provides a contact wire channel positioning device.

[0006] This application provides a contact wire channel positioning device, which adopts the following technical solution:

[0007] A contact wire channel positioning device includes a bracket. Slide rails are fixedly mounted on both sides of the bracket along its length. Support columns are slidably connected to both slide rails. Limiting tubes are fitted around the outer sides of the support columns and slidably connected to the limiting tubes vertically. A movable plate is fixedly connected between the two limiting tubes. An elastic element is provided between the movable plate and the support column. In its natural state, the elastic element tends to push the movable plate away from the bracket. Two connecting plates are slidably connected above the movable plate along the width of the slide rails. Positioning plates are fixedly mounted on the upper ends of both connecting plates. Detection grooves adapted to the channel are opened above the two positioning plates. Two vertical plates are fixedly mounted on the upper ends of the movable plate. A limiting rod is fixedly mounted between the two vertical plates. The limiting rod passes through the two connecting plates and is slidably connected to the connecting plates. A bidirectional lead screw is rotatably connected between the two vertical plates. The bidirectional lead screw is parallel to the limiting rod. Two connecting plates are located at the two ends of the bidirectional lead screw, and the bidirectional lead screw passes through the connecting plates and is threadedly connected to them.

[0008] By adopting the above technical solution, under the support of the bracket, the moving plate moves along the length of the slide rail via the support column and the limiting tube. During testing, the channel is placed into the testing slot and abuts against it. When the positioning plate slide rail moves smoothly, the two channels are in a parallel state, and the distance between the two channels meets the standard. Under the limiting action of the limiting rod, the double-acting screw is rotated, causing the two connecting plates to move closer or further apart laterally, thereby driving the positioning plate to slide laterally to test two channels with different spacing widths. The limiting tube and the support column cooperate to limit the elastic element and allow the moving plate to have space to move vertically. The channel is arc-shaped in the vertical height. During the sliding of the moving plate, the elastic element pushes the positioning plate to always fit against the channel, which helps to improve the applicability of the device and the convenience of testing.

[0009] Optionally, the connecting plate includes a horizontal plate and a vertical plate. The horizontal plate is arranged along the length of the moving plate and is fixedly connected to the lower end of the positioning plate. The vertical plate is vertically fixed to the end of the horizontal plate away from the positioning plate, and both vertical plates are located between the two positioning plates. The vertical plate is arranged perpendicular to the moving plate and is slidably connected to the moving plate in the transverse direction. The bidirectional lead screw and the limiting rod are both connected to the vertical plate.

[0010] By adopting the above technical solution, when the vertical plates of the two connecting plates abut, the width of the measurable channel spacing is minimized, and the width of the two positioning plates is fixed at this time, which is conducive to improving the accuracy of channel detection. Rotating the bidirectional lead screw causes the vertical plates to slide laterally away from each other, which in turn causes the two positioning plates to move away from each other. The positioning plates can extend from the moving plate under the action of the horizontal plate, and then be adjusted to the required width to measure channels with different spacing widths, which is conducive to improving the convenience of detection.

[0011] Optionally, one of the horizontal plates is vertically threaded to one end of the plates that are close to each other, and the abutment rod passes through the connecting plate and abuts against the upper surface of the moving plate.

[0012] By adopting the above technical solution, when the two vertical plates are far apart to the required width, the first abutment rod is rotated so that the first abutment rod abuts against the upper surface of the moving plate. The friction force further limits the lateral displacement of the moving plate, which helps to improve the detection stability of the device.

[0013] Optionally, the support column is connected with a second abutment rod along a transverse thread. The second abutment rod is parallel to the movable plate and passes through the support column to abut against the inner wall of the slide rail.

[0014] By adopting the above technical solution, after the moving plate is pushed to the desired position, the second abutment rod is rotated to abut against the inner wall of the slide rail. The friction force limits the displacement of the support column along the length of the support, thereby fixing the position of the moving plate.

[0015] Optionally, the positioning plate is fixedly connected to the second limiting rod in the transverse direction, and a threaded rod is rotatably connected to the positioning plate. The threaded rod is parallel to the second limiting rod. A sliding plate is provided on the inner wall of the detection groove. The second limiting rod passes through the sliding plate and is slidably connected to the sliding plate. The sliding plate is slidably connected to the positioning plate along the length direction of the second limiting rod. The threaded rod passes through the positioning plate and is threadedly connected to the sliding plate.

[0016] By adopting the above technical solution, under the support of the positioning plate, when the channel abuts against the detection groove, the rotating threaded rod, under the limiting action of the second limiting rod, causes the slide plate to move laterally in the detection groove, thereby adjusting the width of the detection groove and improving the applicability of the device.

[0017] Optionally, a support plate is fixedly connected to the positioning plate. The support plate is parallel to the limiting rod and faces the detection groove. A roller is rotatably connected to the support plate. The roller is higher than the bottom of the detection groove and rolls with the groove during detection.

[0018] By adopting the above technical solution, under the support of the support plate, the channel and the roller roll through the detection groove, thereby reducing the probability of wear on the detection groove during the detection process affecting the detection accuracy and improving the convenience of the device for detection.

[0019] Optionally, a plurality of connecting rods are fixedly provided circumferentially below the bracket. A caster wheel is installed at the end of the connecting rod away from the bracket. A stop rod is provided on the connecting rod. A movable ring is fixedly connected to the stop rod. The movable ring is sleeved on the outside of the connecting rod and slidably connected to the connecting rod along the axial direction. The connecting rod has a groove. A limit block is slidably connected radially within the groove. An elastic element II is provided between the limit block and the connecting rod. In its natural state, the elastic element II has a tendency to push the limit block away from the connecting rod. When the movable ring is above the limit block, the lower end of the stop rod is higher than the lower end of the caster wheel. When the movable ring is below the limit block, the lower end of the stop rod is lower than the lower end of the caster wheel.

[0020] By adopting the above technical solution, the device moves via the casters under the support of the connecting rod, which improves the ease of movement of the device. The limiting block moves away from the connecting rod under the push of the elastic element 2. One end of the limiting block is located inside the connecting rod, and the other end is located outside the connecting rod. The stop rod descends along the connecting rod via the moving ring. When the lower end of the stop rod contacts the ground and the height of the stop rod is lower than the height of the casters, the upper end face of the moving ring abuts against the lower end face of the limiting block. The device is fixed and supported by the stop rod. The stop rod rises along the connecting rod, and the lower end face of the moving ring abuts against the upper end face of the limiting block. The limiting block limits the vertical displacement of the stop rod. At this time, the limiting of the casters is released.

[0021] Optionally, the connecting rod includes an inner rod and an outer rod. The inner rod is vertically fixed to the lower end of the bracket, and the outer rod is sleeved on the outside of the inner rod and slidably connected to the inner rod. A caster wheel is installed on the end of the outer rod away from the bracket. The inner rod has a fixing groove along the radial direction. A positioning rod that is slidably connected to the inner rod is provided in the fixing groove. An elastic element is provided between the positioning rod and the inner rod. The outer rod has multiple through holes corresponding to the positioning rod. When the positioning rod is directly opposite the inner rod, the elastic element is in its natural state. At this time, one end of the positioning rod is located in the fixing groove, and the other end is located in the through hole.

[0022] By adopting the above technical solution, when the inner rod rises along the outer rod, the elastic element three is in a compressed state, and the positioning rod abuts against the inner wall of the outer rod. When the positioning rod is aligned with the through hole, the elastic element three pushes the positioning rod into the through hole. At this time, the inner rod positions the outer rod through the positioning rod and limits the vertical displacement of the inner rod. The length of the connecting rod can be adjusted, thus making it suitable for different application scenarios.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. Supported by the bracket, the moving plate moves along the length of the slide rail via the support column and the limiting tube. During testing, the channel is placed into the testing slot and abuts against it. When the positioning plate slide rail moves smoothly, the two channels are parallel and the distance between them meets the standard. Under the limiting action of the limiting rod, the double-acting screw is rotated, causing the two connecting plates to move closer or further apart laterally, thereby driving the positioning plate to slide laterally to test two channels with different spacing widths. The limiting tube and the support column work together to limit the elastic element and allow the moving plate to have space to move vertically. The channel is arc-shaped in the vertical height. During the sliding of the moving plate, the elastic element pushes the positioning plate to always fit against the channel, which helps to improve the applicability of the device and the convenience of testing.

[0025] 2. When the vertical plates of the two connecting plates abut, the width of the measurable channel spacing is the smallest, and the width of the two positioning plates is fixed at this time, which helps to improve the accuracy of channel detection. Rotating the bidirectional lead screw causes the vertical plates to slide laterally away from each other, which in turn drives the two positioning plates away from each other. The positioning plates can extend from the moving plate under the action of the horizontal plate, and then be adjusted to the required width to measure channels with different spacing widths, which helps to improve the convenience of detection.

[0026] 3. When the two vertical plates are separated by the required width, rotate the first abutment rod so that the first abutment rod abuts against the upper surface of the moving plate. The friction force further limits the lateral displacement of the moving plate, which helps to improve the detection stability of the device. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of a contact wire channel positioning device.

[0028] Figure 2 This is a schematic diagram designed to highlight the external structure of the movable panel.

[0029] Figure 3 This is a schematic diagram designed to highlight the internal structure of the moving plate.

[0030] Figure 4 This is a schematic diagram designed to highlight the internal structure of the connecting rod.

[0031] Explanation of reference numerals in the attached drawings: 1. Bracket; 11. Slide rail; 111. Rectangular block; 112. Abutment rod two; 113. Support column; 114. Limiting tube; 115. Elastic element one; 116. Sliding hole; 2. Moving plate; 21. Rectangular groove; 211. Two-way lead screw; 212. Limiting rod one; 22. Connecting plate; 221. Horizontal plate; 222. Vertical plate; 223. Abutment rod one; 23. Positioning plate; 231. Slide rail 232. Plate; 233. Threaded rod; 234. Limiting rod II; 235. Support plate; 236. Roller; 237. Detection groove; 38. Connecting rod; 31. Inner rod; 311. Fixing groove; 312. Elastic element III; 313. Positioning rod; 32. Outer rod; 321. Through hole; 322. Groove; 323. Elastic element II; 324. Limiting block; 325. Universal wheel; 326. Moving ring; 327. Stop rod. Detailed Implementation

[0032] The present application will be further described in detail below with reference to all the accompanying drawings.

[0033] This application discloses a contact wire channel positioning device. Example

[0034] Reference Figure 1 and Figure 2A contact wire channel positioning device includes a bracket 1. Parallel slide rails 11 are provided on both sides of the upper end of the bracket 1. The slide rails 11 are arranged along the length of the bracket 1. Rectangular blocks 111 are slidably connected inside each slide rail 11. A second abutment rod 112 is threadedly connected to the side of each rectangular block 111 away from the bracket 1. A sliding hole 116 is opened on the outer side of the slide rail 11 along its length. The second abutment rod 112 passes through the sliding hole 116 and the rectangular block 111 in sequence and abuts against the inner wall of the slide rail 11. When the rectangular block 111 moves, it drives the second abutment rod 112 to slide along the sliding hole 116. Rotating the second abutment rod 112 allows it to cooperate with the slide rail 11 to fix the rectangular block 111, which helps improve the stability of the device.

[0035] refer to Figure 1 and Figure 3 A limiting groove is provided at the upper end of the rectangular block 111. A support column 113 is detachably connected to the limiting groove. A limiting tube 114 is slidably connected to the outside of the support column 113. An elastic element 115 is provided between the limiting tube 114 and the support column 113. The elastic element 115 can be a spring. In its natural state, the spring has a tendency to push the limiting tube 114 away from the support column 113. A movable plate 2 is fixedly connected to the upper end of the limiting tube 114. When the support column 113 moves along the slide rail 11 via the rectangular block 111, it drives the limiting tube 114 to move along the slide rail 11, and then the limiting tube 114 drives the movable plate 2 to move along the slide rail 11.

[0036] refer to Figure 2 A rectangular groove 21 is formed laterally at the upper end of the movable plate 2. Two connecting plates 22 are slidably connected within the rectangular groove 21. The two connecting plates 22 are symmetrically arranged, and a positioning plate 23 is fixedly connected to the upper end of each connecting plate 22. A bidirectional lead screw 211 is rotatably connected to the inner wall of the rectangular groove 21, and the bidirectional lead screw 211 is set parallel to the movable plate 2. A limit rod 212 is fixedly connected to the inner wall of the rectangular groove 21, and the limit rod 212 is set parallel to the bidirectional lead screw 211. The bidirectional lead screw 211 passes through the two connecting plates 22 and is threadedly connected to the connecting plates 22. The limit rod 212 passes through the two connecting plates 22 and is slidably connected to the connecting plates 22. Under the limiting action of the limit rod 212, by rotating the bidirectional lead screw 211, the two connecting plates 22 move closer or further away from each other along the limit rod 212, thereby driving the positioning plate 23 to slide along the length direction of the upper end face of the movable plate 2, so that the two positioning plates 23 move closer or further away from each other, thus facilitating the adjustment of the distance between the two positioning plates 23.

[0037] refer to Figure 3The connecting plate 22 includes a horizontal plate 221 and a vertical plate 222. The horizontal plate 221 is parallel to the moving plate 2, and the vertical plate 222 is perpendicular to the moving plate 2. The vertical plate 222 is located below the horizontal plate 221. Two positioning plates 23 are located at both ends of the horizontal plate 221 near the slide rail 11. The end of the horizontal plate 221 away from the positioning plates 23 is fixedly connected to the vertical plate 222. When the bidirectional lead screw 211 is rotated, the positioning plates 23 can extend beyond the length of the rectangular groove 21, thus expanding the distance range between the two positioning plates 23.

[0038] refer to Figure 3 A first abutment rod 223 is threadedly connected to the horizontal plate 221 and is set perpendicular to the horizontal plate 221. The first abutment rod 223 is located on the side of the horizontal plate 221 near the vertical plate 222. The first abutment rod 223 passes through the horizontal plate 221 and abuts against the bottom of the rectangular groove 21, thereby further positioning the horizontal plate 221 and improving the stability of the device.

[0039] refer to Figure 1 and 3 Both positioning plates 23 are provided with detection slots 236. When inspecting the channel, the threaded rod 232 is rotated to adjust the distance between the two positioning plates 23 to the required width so that the channel can be placed into the detection slots 236. For the channel installed in the tunnel, its overall shape is arc-shaped vertically. During the movement of the moving plate 2 along the slide rail 11, the elastic element 115 applies an upward thrust to the moving plate 2, so that the moving plate 2 pushes the positioning plate 23 to keep it in contact with the channel, which helps to improve the convenience of the device inspection.

[0040] refer to Figure 3 A second limiting rod 233 is fixedly connected to the inner wall of the detection groove 236. The second limiting rod 233 is set parallel to the first limiting rod 212. A threaded rod 232 is rotatably connected inside the detection groove 236, and the threaded rod 232 is set parallel to the second limiting rod 233. A sliding plate 231 is provided on the inner wall of the detection groove 236. The threaded rod 232 passes through the sliding plate 231 and is threadedly connected to the sliding plate 231. The second limiting rod 233 passes through the sliding plate 231 and is slidably connected to the sliding plate 231. By rotating the threaded rod 232, the sliding plate 231 can be slidably connected to the positioning plate 23 in the lateral direction, thereby adjusting the overall width of the detection groove 236, which is suitable for the detection of different types of grooves.

[0041] refer to Figure 1 and Figure 2A support plate 234 is fixedly connected to the positioning plate 23. A roller 235 is rotatably connected to the support plate 234. The roller 235 is parallel to the limiting rod 233 and directly opposite the detection groove 236, and is higher than the bottom of the detection groove 236. In the detection state, after the channel is placed into the detection groove 236, the moving plate 2 moves along the slide rail 11. At this time, the channel and the roller 235 are in rolling contact, which helps reduce wear caused by friction between the channel and the bottom of the detection groove 236, thereby affecting the probability of the detection result and improving the detection accuracy of the device.

[0042] refer to Figure 1 and Figure 4 A connecting rod 3 is provided below the bracket 1. The connecting rod 3 includes an inner rod 31 and an outer rod 32. The outer rod 32 is sleeved on the outside of the inner rod 31 and slidably connected to the inner rod 31. The upper end of the inner rod 31 is fixedly connected to the lower end face of the bracket 1. The lower end of the outer rod 32 is rotatably connected to a caster wheel 325 to facilitate the movement of the device and the inspection of the channel, thereby improving the convenience of inspection.

[0043] refer to Figure 4 The outer rod 32 is provided with a movable ring 326, and a stop rod 327 is fixedly connected to the movable ring 326. The stop rod 327 is set parallel to the outer rod 32. The movable ring 326 is sleeved on the outside of the outer rod 32 and is slidably connected to the outer rod 32 along its length. A groove 322 is provided on the outer rod 32, and a limit block 324 is slidably connected in the groove 322 along the radial direction of the outer rod 32. An elastic element 323 is provided between the limit block 324 and the outer rod 32. The elastic element 323 can be a spring. In its natural state, the elastic element 323 has the tendency to push the limit block 324 away from the outer rod 32. At this time, one end of the limit block 324 is located in the groove 322, and the other end is located outside the outer rod 32.

[0044] refer to Figure 4 When the moving ring 326 is above the limiting block 324, the upper end of the limiting block 324 contacts the lower end of the moving ring 326, supporting and limiting the moving ring 326, and consequently supporting and limiting the stop rod 327. At this time, the lower end of the stop rod 327 is away from the ground, thus avoiding interference with the caster 325. When the moving ring 326 is below the limiting block 324, the upper surface of the moving ring 326 contacts the lower surface of the limiting block 324, limiting the vertical displacement of the moving ring 326. At this time, the stop rod 327 contacts the ground, and the height of the lower end of the stop rod 327 is lower than the height of the caster 325. All the stop rods 327 work together to lift the bracket, keeping the caster away from the ground, supporting and fixing the device, which helps improve the detection stability of the device.

[0045] refer to Figure 4The inner rod 31 has a radially formed fixing groove 311, and a positioning rod 313 is installed in the fixing groove 311. The positioning rod 313 is slidably connected to the inner rod 31 along the diameter direction of the inner rod 31. An elastic element 312 is provided between the positioning rod 313 and the fixing groove 311. The elastic element 312 can be a spring. In its initial state, the elastic element 312 tends to push the positioning rod 313 away from the inner rod 31. The outer rod 32 has multiple sets of through holes 321 corresponding to the positioning rod 313. When the inner rod 31 slides upward, when the positioning rod 313 is aligned with the through hole 321, the positioning rod 313 passes through the through hole 321 under the pushing action of the spring. At this time, one end of the positioning rod 313 is located in the fixing groove 311 and the other end is located in the through hole 321. At this time, the positioning rod 313 locks the displacement between the inner rod 31 and the outer rod 32. When the positioning rod 313 is engaged with different through holes 321, the connecting rod 3 has different overall heights, which helps to improve the convenience of device testing.

[0046] The implementation principle of the contact wire channel positioning device in this application embodiment is as follows: When the channel is placed in the detection groove 236, the distance between the sliding plate 231 and the inner wall of the detection groove 236 is controlled by rotating the threaded rod 232, so that the width of the detection groove 236 is adapted to the channel. The connecting plate 22 is further fixed by rotating the abutment rod 223, thereby fixing the positioning plate 23. The distance between the two connecting plates 22 is adjusted by rotating the bidirectional screw 211, thereby adjusting the distance between the two positioning plates 23 to adapt to channels with different spacings. When detecting the channel, the moving plate 2 slides in the opposite direction along the length of the slide rail 11. Under the pushing action of the elastic element 115, the moving plate 2 always maintains an upward trend, so that the positioning plate 23 always abuts against the channel. When detecting channels with different spacings and different widths, there is no need to replace the detection device, which is beneficial to improving the detection convenience of the device.

[0047] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A catenary channel positioning device comprising a support (1), characterized in that: The bracket (1) has slide rails (11) fixed on both sides along its length. Each slide rail (11) is slidably connected to a support column (113). A limiting tube (114) is sleeved on the outside of the support column (113) and slidably connected to the limiting tube (114) in the vertical direction. A movable plate (2) is fixedly connected between the two limiting tubes (114). An elastic element (115) is provided between the movable plate (2) and the support column (113). In its natural state, the elastic element (115) tends to push the movable plate (2) away from the bracket (1). Two connecting plates (22) are slidably connected above the movable plate (2) along the width direction of the slide rails (11). The upper ends of the two connecting plates (22) are fixed with Positioning plate (23), both positioning plates (23) are provided with detection grooves (236) adapted to the channel. The upper end of the moving plate (2) is fixed with two vertical plates (222). A limiting rod (212) is fixed between the two vertical plates (222). The limiting rod (212) passes through the two connecting plates (22) and is slidably connected to the connecting plates (22). A two-way screw (211) is rotatably connected between the two vertical plates (222). The two-way screw (211) is parallel to the limiting rod (212). The two connecting plates (22) are located at the two ends of the two-way screw (211). The two-way screw (211) passes through the connecting plates (22) and is threadedly connected to the connecting plates (22).

2. A Catenary Tray Positioning Device according to claim 1, characterized in that: The connecting plate (22) includes a horizontal plate (221) and a vertical plate (222). The horizontal plate (221) is arranged along the length of the moving plate (2) and is fixedly connected to the lower end of the positioning plate (23). The vertical plate (222) is vertically fixed to the end of the horizontal plate (221) away from the positioning plate (23), and both vertical plates (222) are located between the two positioning plates (23). The vertical plate (222) is arranged perpendicular to the moving plate (2) and is slidably connected to the moving plate (2) in the transverse direction. The bidirectional lead screw (211) and the limiting rod (212) are both connected to the vertical plate (222).

3. A Catenary Tray Positioning Device according to claim 2, characterised in that: The two horizontal plates (221) are connected to a vertical threaded abutment rod (223) at one end of each other. The abutment rod (223) passes through the connecting plate (22) and abuts against the upper surface of the moving plate (2).

4. A Catenary Tray Positioning Device according to claim 1, characterized in that: The support column (113) is connected to a second abutment rod (112) along a transverse thread. The second abutment rod (112) is parallel to the moving plate (2) and passes through the support column (113) to abut against the inner wall of the slide rail (11).

5. A Catenary Tray Positioning Device according to claim 1, characterized in that: The positioning plate (23) is fixedly connected to the second limiting rod (233) in the transverse direction. A threaded rod (232) is rotatably connected to the positioning plate (23). The threaded rod (232) is parallel to the second limiting rod (233). A sliding plate (231) is provided on the inner wall of the detection groove (236). The second limiting rod (233) passes through the sliding plate (231) and is slidably connected to the sliding plate (231). The sliding plate (231) is slidably connected to the positioning plate (23) along the length direction of the second limiting rod (233). The threaded rod (232) passes through the positioning plate (23) and is threadedly connected to the sliding plate (231).

6. A Catenary Tray Positioning Device according to claim 1, characterized in that: A support plate (234) is fixedly connected to the positioning plate (23). The support plate (234) is parallel to the limiting rod (212) and faces the detection groove (236). A roller (235) is rotatably connected to the support plate (234). The roller (235) is higher than the bottom of the detection groove (236) and is in rolling connection with the roller (235) during groove detection.

7. A Catenary Tray Positioning Device according to claim 1, characterized in that: Several connecting rods (3) are fixedly arranged circumferentially below the bracket (1). A caster wheel (325) is installed at the end of each connecting rod (3) away from the bracket (1). A stop rod (327) is provided on each connecting rod (3). A movable ring (326) is fixedly connected to the stop rod (327). The movable ring (326) is sleeved on the outside of the connecting rod (3) and slidably connected to the connecting rod (3) along the axial direction. A groove (322) is provided on each connecting rod (3). A limited space is slidably connected within the groove (322) along the radial direction of the connecting rod (3). An elastic element (323) is provided between the positioning block (324), the limiting block (324) and the connecting rod (3). The elastic element (323) has a tendency to push the limiting block (324) away from the connecting rod (3) in its natural state. When the moving ring (326) is above the limiting block (324), the lower end of the stop rod (327) is higher than the lower end of the universal wheel (325). When the moving ring (326) is below the limiting block (324), the lower end of the stop rod (327) is lower than the lower end of the universal wheel (325).

8. A Catenary Tray Positioning Device according to claim 7, characterised in that: The connecting rod (3) includes an inner rod (31) and an outer rod (32). The inner rod (31) is fixedly connected to the lower end of the bracket (1) in a vertical direction. The outer rod (32) is sleeved on the outside of the inner rod (31) and slidably connected to the inner rod (31). A caster wheel (325) is installed on the end of the outer rod (32) away from the bracket (1). The inner rod (31) has a fixing groove (311) in a radial direction. The fixing groove (311) has a slidable part that slides with the inner rod (31). The positioning rod (313) is connected, and an elastic element (312) is provided between the positioning rod (313) and the inner rod (31). The outer rod (32) has multiple through holes (321) corresponding to the positioning rod (313). When the positioning rod (313) and the inner rod (31) are facing each other, the elastic element (312) is in a natural state. At this time, one end of the positioning rod (313) is located in the fixing groove (311), and the other end is located in the through hole (321).

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