Positioning detection device for subway power supply installation

Abstract

The application discloses a positioning detection device for metro power supply installation, which comprises a track trolley, a square tube fixedly connected to the side of the track trolley, a square rod slidingly connected in the square tube, a vertical rod fixedly connected to the upper side of the square rod, a scale line arranged on the side of the vertical rod, a sliding rod slidingly connected to the vertical rod in the vertical direction, a support fixedly connected to one side of the sliding rod, a liquid storage tube fixedly connected to the end of the support, a fluorescent pigment stored in the liquid storage tube, a first through hole and a second through hole arranged on the side of the liquid storage tube, a wrapping block sealingly and slidingly connected to the outside of the liquid storage tube, a supporting plate fixedly connected to one side of the wrapping block, and an exhaust pipe fixedly connected to the wrapping block. The application can detect the overheight or overlow of the contact rail installation, does not need a position sensor and excessive control, only needs to drive the track trolley to move on the track at intervals, can detect the installation height qualification of the contact rail at intervals, and automatically sprays the fluorescent pigment to form a mark at the unqualified position, so that the long-distance contact rail can be quickly detected.

Description

Technical Field

[0001] This invention relates to the field of subway track inspection equipment technology, and in particular to a positioning and inspection device for subway power supply installation. Background Technology

[0002] The electrical energy required for subway operation is obtained through the contact between the current collector shoes and the contact rail. The contact rail system is a crucial subsystem of the subway traction power supply system, mainly composed of steel-aluminum composite rails, expansion joints, end elbows, and other related components and insulating support devices, providing power to electric locomotives. The transmission of electricity is achieved through the contact between the current collector shoes of the electric locomotives and the composite rails, directly impacting the safe operation of the subway power supply system and even the entire subway system.

[0003] The installation elevation of the contact rail has strict requirements. Installation too high can easily cause poor contact, while installation too low will accelerate wear on the current collector shoes. Current technologies generally use manual rulers or laser sensors for measurement. Using manual rulers requires manual movement of the ruler at intervals, which is not only time-consuming and labor-intensive, but also introduces inaccuracies due to manual readings. Using laser sensors, since it doesn't simulate actual contact with the contact rail, it is prone to inaccuracies, and the dim lighting in tunnels hinders automated operation. Specifically, after the laser sensor detects a non-compliant location, it cannot quickly mark it, making rapid detection of long distances of contact rail impossible, thus lengthening the entire inspection cycle. Increasing lighting to solve the problem requires additional lighting equipment, which increases inspection costs and is not the optimal choice. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a positioning detection device for subway power supply installation, thereby solving the problems existing in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A positioning and detection device for subway power supply installation includes a track trolley, a square tube fixedly connected to the side of the track trolley, a square rod slidably connected inside the square tube, a locking rod threadedly connected to the side of the square tube, a vertical rod fixedly connected to the upper side of the square rod, a scale line on the side of the vertical rod, a sliding rod slidably connected to the vertical rod, a bracket fixedly connected to one side of the sliding rod, a liquid storage tube fixedly connected to the end of the bracket, a liquid storage tube storing fluorescent pigment, a first through hole and a second through hole on the side of the liquid storage tube, a sealing and sliding connection to a wrapping block, a support plate fixedly connected to one side of the wrapping block, a discharge pipe fixedly connected to the wrapping block, and the discharge pipe being able to communicate with the first through hole or the second through hole;

[0007] The package block is equipped with a damping device, which is used to increase the frictional force of the package block sliding relative to the liquid storage tube.

[0008] The track trolley is equipped with a periodic lifting device on its upper side, which is used to periodically raise or lower the sliding rod on the vertical rod.

[0009] Preferably, the periodic lifting device includes a vertical slide bar that slides through the track trolley. A boss is provided in the middle of the vertical slide bar, and a support spring is fixedly connected between the boss and the track trolley. A square hole is provided at the lower end of the vertical slide bar, and a square rod is slidably connected inside the square hole. A buffer spring is fixedly connected between the square rod and the bottom of the square hole, and a traveling wheel is rotatably connected to the lower end of the square rod.

[0010] A triangular frame is fixedly connected to the side of the vertical slide bar. A guide hole is set vertically on the bottom beam of the triangular frame. A limiting step column is fixedly connected to the upper side of the track trolley. The small end of the step column is slidably connected to the guide hole.

[0011] The sliding rod is laterally connected to the side of the bottom beam of the triangular frame.

[0012] Preferably, a rolling column is rotatably connected to the upper side of the pallet.

[0013] Preferably, a round rod is fixedly connected to one side of the package block, the round rod passes through the bracket and is slidably connected to the bracket, and a first spring is fixedly connected between the package block and the bracket.

[0014] Preferably, a liquid storage tank is fixedly connected to the upper side of the track trolley, a water pump is fixedly connected inside the liquid storage tank, the outlet pipe of the water pump is equipped with a solenoid valve, a hose is fixedly connected between the outlet pipe and the liquid storage pipe, and a pressure sensor is fixedly connected inside the liquid storage pipe.

[0015] The inner tube is vertically slidably connected to the liquid storage tube. The upper and lower ends of the inner tube are open. The upper and lower ends of the outer side of the inner tube are provided with damping sealing rings. The side of the inner tube is provided with two round holes. A rubber ring is fixedly connected to the outside of each round hole. A round rod is fixedly connected to the lower end of the inner tube. A blind plate is fixedly connected to the lower end of the liquid storage tube. The round rod slides through the blind plate. A cover plate is threaded to the upper end of the liquid storage tube. The lower end of the round rod extends out of the liquid storage tube and is fixedly connected to a second spring. The second spring is fixedly connected to the upper side of the square rod.

[0016] The damping device includes a rubber plate. The inner wall of the liquid storage tube is provided with a countersunk hole, and the rubber plate is slidably connected in the countersunk hole. A screw is threadedly connected to the outside of the block. The screw extends into the countersunk hole and presses against the rubber plate. The rubber plate is squeezed and adhered to the outside of the liquid storage tube. The damping retention force of the rubber plate is greater than that of the damping sealing ring.

[0017] Preferably, the sliding rod has an elevation line on its side.

[0018] The advantages of this invention are:

[0019] The positioning and detection device for subway power supply installation provided by this invention automatically measures at intervals by having the traveling wheel at the lower end of the square rod contact the sleepers. When the track trolley moves along the track, the traveling wheel rolls onto the sleepers from the side, causing the vertical sliding rod and the square rod to rise as a whole. The step column limits the rising position of the vertical sliding rod, thus preventing additional errors caused by differences in the height of the sleepers when the sliding rod and the elevation line rise, ensuring that the vertical sliding rod reaches the same height each time. When the sleeper is too high, the vertical sliding rod rises and the triangular frame is limited by the step column, and the square rod compresses the buffer spring in the square hole separately to consume additional travel. Compared with the electric push rod disclosed in the embodiment, no controller is required. As the track trolley moves, the rolling column of the support plate can be contacted with the bottom surface of the contact rail at intervals according to the spacing of the sleepers for measurement, without having to maintain constant contact measurement, thereby reducing wear.

[0020] This invention utilizes the damping effect of the rubber plate and the deceleration effect of the damping sealing ring to detect whether the contact rail is installed too high or too low. It does not require position sensors or excessive control. It only requires driving the track trolley to move forward at intervals on the track to detect the installation height of the contact rail at intervals. It automatically sprays fluorescent pigment to mark the non-compliant positions, thus facilitating rapid detection of long-distance contact rails. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the basic structure of the present invention.

[0022] Figure 2 yes Figure 1 A magnified view of point E in the image.

[0023] Figure 3 This is a schematic diagram of the semi-section structure of the packaging block and the semi-section structure of the liquid storage tube, as well as the connection structure between the two.

[0024] Figure 4 This is a schematic diagram of the invention moving on a track. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0026] Example 1

[0027] like Figure 1-4As shown, the present invention provides a positioning and detection device for subway power supply installation, comprising a track trolley 1, a square tube 11 fixedly connected to the side of the track trolley 1, a square rod 12 slidably connected inside the square tube 11, a locking rod 13 threadedly connected to the side of the square tube 11, the locking rod 13 pressing against the side of the square rod 12 through the thread to adjust the position of the square rod 12, facilitating the horizontal pushing of the square rod 12 to the contact rail position, a vertical rod 14 fixedly connected to the upper side of the square rod 12, the vertical rod 14 having scale lines on its side, a sliding rod 15 vertically slidably connected to the vertical rod 14, the sliding rod 15 having elevation lines 151 on its side, and one side of the sliding rod 15 fixed. A connecting bracket 16 is fixedly connected to a liquid storage tube 2 at one end of the bracket 16. The liquid storage tube 2 stores fluorescent pigment. The side of the liquid storage tube 2 is provided with a first through hole 21 and a second through hole 22. The center line of the first through hole 21 and the second through hole 22 is consistent with the elevation line 151. The distance between the first through hole 21 and the second through hole 22 is less than the sum of the positive and negative tolerances of the contact rail. The outer sealing of the liquid storage tube 2 is slidably connected to a wrapping block 3. A support plate 7 is fixedly connected to one side of the wrapping block 3. A rolling column 71 is rotatably connected to the upper side of the support plate 7. The wrapping block 3 is fixedly connected to a discharge pipe 31. The discharge pipe 31 can communicate with the first through hole 21 or the second through hole 22.

[0028] The wrapping block 3 is equipped with a damping device to increase the frictional force of the wrapping block 3 relative to the liquid storage tube 2. The damping device includes a rubber plate 34. The inner wall of the wrapping block 3 in contact with the liquid storage tube 2 has a countersunk hole. The rubber plate 34 is slidably connected in the countersunk hole. The outer side of the wrapping block 3 is threaded with a screw 35. The screw 35 extends into the countersunk hole and presses against the rubber plate 34. The rubber plate 34 is pressed and adhered to the outer side of the liquid storage tube 2. The frictional force of the rubber plate 34 can make the wrapping block 3 stay in any position, and the position of the wrapping block 3 can be changed by pushing it by hand.

[0029] The track trolley 1 is equipped with a periodic lifting device 4. The periodic lifting device 4 is used to periodically raise or lower the sliding rod 15 on the vertical rod 14. In this embodiment, the periodic lifting device 4 adopts an electric push rod to adjust the height of the sliding rod 15 on the vertical rod 14.

[0030] This invention uses a track trolley 1 to move along a laid track and stop at intervals. After stopping at the first position, the periodic lifting device 4 raises the sliding rod 15 until the elevation line 151 coincides with the design elevation of the power supply contact rail (not powered) on one side of the track. Then, the wrapping block 3 is manually moved to slide on the liquid storage pipe 2. Figure 2 and 3 As shown, when the rolling column 71 contacts the bottom surface of the contact rail that meets the design elevation, the discharge pipe 31 is located between the first through hole 21 and the second through hole 22. Both the first through hole 21 and the second through hole 22 are blocked by the wrapping block 3, so the fluorescent pigment cannot be sprayed out through the discharge pipe 31 at this time.

[0031] If the height of the contact rail to be tested exceeds the maximum value of the standard height, that is, when the package block 3 is pushed upward to contact the contact rail, the discharge pipe 31 is connected to the first through hole 21 and can discharge fluorescent pigment. Marking this point indicates that the installation height of the contact rail at this point is too high and subsequent maintenance is required.

[0032] If the height of the contact rail to be tested is lower than the minimum standard height, push the wrapping block 3 upward. The contact rail with the lower contact position of the wrapping block 3 will be blocked, and the discharge pipe 31 will not be able to reach between the first through hole 21 and the second through hole 22. The discharge pipe 31 and the second through hole 22 will form a passage, and fluorescent pigment can be sprayed out from the discharge pipe 31, indicating that the installation height of the contact rail at that point is insufficient.

[0033] Fluorescent pigment is sprayed to mark the contact rail that does not meet the design elevation. At the same time, the position of the first through hole 21 and the second through hole 22 is restricted, so that it is not necessary to deliberately read the height of the scale line on the side of the vertical rod 14, which facilitates the inspection of the contact rail installation quality in the dimly lit tunnel. In addition, the rolling column 71 on the upper side of the support plate 7, which is used to contact the contact rail, does not keep in contact with the bottom surface of the contact rail through the lifting action of the periodic lifting device 4, reducing wear. This allows the contact rail to be inspected at intervals, which meets the needs of random inspection of the contact rail installation height. It is also more convenient than the existing ruler measurement and can form marks in time.

[0034] Example 2

[0035] like Figure 1 and Figure 4 As shown, the periodic lifting device 4 includes a vertical slide bar 41, which slides through the track trolley 1. A boss 42 is provided in the middle of the vertical slide bar 41. A support spring 43 is fixedly connected between the boss 42 and the track trolley 1. A square hole is provided at the lower end of the vertical slide bar 41. A square rod 44 is slidably connected in the square hole. A buffer spring is fixedly connected between the square rod 44 and the bottom of the square hole. A traveling wheel 45 is rotatably connected to the lower end of the square rod 44.

[0036] The vertical slide bar 41 is fixedly connected to the side of the triangular frame 46. The bottom beam of the triangular frame 46 is provided with a guide hole 47. The upper side of the track trolley 1 is fixedly connected to the limiting step column 48. The small end of the step column 48 is slidably connected to the guide hole 47.

[0037] The sliding rod 15 is laterally slidably connected to the side of the bottom beam of the triangular frame 46. The lateral sliding relationship of the sliding rod 15 is the same as the sliding relationship between the square tube 11 and the square rod 12.

[0038] This invention utilizes the traveling wheel 45 at the lower end of the square rod 44 to contact the sleeper 10, forming an automatic interval measurement. When the track trolley 1 moves along the track, the traveling wheel 45 rolls from the side onto the sleeper 10, causing the vertical sliding rod 41 and the square rod 44 to rise as a whole. The step column 48 limits the rising position of the vertical sliding rod 41, thus ensuring that the sliding rod 15 and the elevation line 151 do not cause additional errors due to the height difference of the sleeper 10 when rising, guaranteeing that the vertical sliding rod 41 reaches the same height each time. When the sleeper 10 is too high, the vertical sliding rod 41 rises and the triangular frame 46 is limited by the step column 48, then the square rod 44 compresses the buffer spring in the square hole to consume additional travel. Compared with the electric push rod disclosed in Embodiment 1, no controller is required. As the track trolley 1 moves, the rolling column 71 of the support plate 7 can be contacted with the bottom surface of the contact rail at intervals according to the spacing of the sleepers 10, without having to maintain constant contact measurement, thereby reducing wear.

[0039] Example 3

[0040] Since the elevation of the contact rail needs to be measured by contact and color marking is required for contact rails that do not meet the elevation, the solutions in Embodiment 1 and Embodiment 2 both require step-by-step control and a lot of manual operation. Therefore, this embodiment further discloses a solution that overcomes the inconvenience of the above solutions.

[0041] Specifically, a round rod 32 is fixedly connected to one side of the wrapping block 3. The round rod 32 passes through the bracket 16 and is slidably connected to the bracket 16. A first spring 33 is fixedly connected between the wrapping block 3 and the bracket 16, which guides the sliding of the wrapping block 3. In conjunction with the friction between the screw 35 and the rubber plate 34, the pressing force of the rubber plate 34 is achieved through the thread action of the screw 35. For example, when the wrapping block 3 is moved quickly by hand, the first spring 33 is stretched or compressed. When the hand is released, the first spring 33 retracts and needs to overcome the friction of the rubber plate 34, thus forming the effect of the wrapping block 3 slowly returning to its original position.

[0042] The upper side of the track trolley 1 is fixedly connected to the liquid storage tank 5, and the liquid storage tank 5 is fixedly connected to the water pump. The outlet pipe of the water pump is equipped with a solenoid valve. A hose is fixedly connected between the outlet pipe and the liquid storage pipe 2. A pressure sensor is fixedly connected inside the liquid storage pipe 2. The pressure sensor is used to monitor the water pressure of the fluorescent pigment. When the discharge pipe 31 is connected to the first through hole 21 or the second through hole 22, an external connection is formed, and the pressurized fluorescent pigment in the liquid storage pipe 2 is sprayed out to form a mark.

[0043] An inner tube 61 is vertically slidably connected inside the liquid storage tube 2. The upper and lower ends of the inner tube 61 are open. Damping sealing rings 62 are provided at the upper and lower ends of the outer side of the inner tube 61. Two round holes 63 are provided on the side of the inner tube 61. A rubber ring 631 is fixedly connected to the outer side of each round hole 63. A round rod 64 is fixedly connected to the lower end of the inner tube 61. A blind plate is fixedly connected to the lower end of the liquid storage tube 2. The round rod 64 slides through the blind plate. A cover plate is threaded to the upper end of the liquid storage tube 2 to facilitate the replacement of internal components. The lower end of the round rod 64 extends out of the liquid storage tube. 2. The second spring 65 is fixedly connected to the upper side of the square rod 12. The damping sealing ring 62 plays the role of sealing and increasing friction. When the liquid storage tube 2 and the inner tube 61 are lifted synchronously and quickly, the resistance of the damping sealing ring 62 makes the sliding speed of the inner tube 61 relative to the liquid storage tube 2 slow down. Therefore, the second spring 65 is pulled up quickly first. When the liquid storage tube 2 is in place, the second spring 65 retracts and takes the inner tube 61 down relative to the liquid storage tube 2. Its principle is the same as the blocking effect of the rubber plate 34.

[0044] The damping retention force of the rubber plate 34 is greater than that of the damping sealing ring 62.

[0045] When the sliding rod 15 is not raised, the present invention, such as Figure 3 As shown, the two round holes 63 are located above the first through hole 21 or the second through hole 22, and at this time the discharge pipe 31 is connected to the first through hole 21. Due to the sealing effect of the damping sealing ring 62 and the rubber ring 631, the discharge pipe 31 will not spray out fluorescent pigment.

[0046] The sliding rod 15 quickly reaches the elevation via the periodic lifting device 4, meaning that the sliding rod 15, the bracket 16, and the liquid storage tube 2 are rapidly raised to the elevation position. During this process, the inner tube 61 slides slowly relative to the liquid storage tube 2, causing a delay in the connection between the round hole 63 and the first through hole 21 or the second through hole 22. If the wrapping block 3 has already contacted and blocked the standard height contact rail, that is, the wrapping block 3 is limited by the support plate 7 and the rolling column 71, it will move downward relative to the liquid storage tube 2, so that the discharge pipe 31 is in the standard position in the middle between the first through hole 21 or the second through hole 22. At this time, the discharge pipe 31 is not connected to the first through hole 21 or the second through hole 22. Even if the inner tube 61 slowly slides into place relative to the liquid storage tube 2 later, the round hole 63 will not form a path for externally sprayed fluorescent pigment after it connects with the first through hole 21 or the second through hole 22.

[0047] After no fluorescent pigment is sprayed at the qualified position, the track trolley 1 moves to the next position, that is, after the whole is no longer in contact with the contact rail. Since the damping retention force of the rubber plate 34 is greater than that of the damping sealing ring 62, the moving speed of the wrapping block 3 is less than that of the inner tube 61. The discharge pipe 31 of the wrapping block 3 is always closed between the first through hole 21 or the second through hole 22. The inner tube 61 first resets and blocks the round hole 63, and then the discharge pipe 31 gradually resets. Thus, during the replacement of two adjacent positions, the automatic sealing effect can be achieved without separate control.

[0048] The damping effect of the damping sealing ring 62 and the rubber plate 34 is tested manually before entering the track to ensure that the required recovery speed can be achieved.

[0049] When the contact rail is installed above the design elevation, the package block 3 will not be limited by the support plate 7 and the rolling column 71, thus maintaining communication with the first through hole 21. After the discharge pipe 31 slides into position relative to the liquid storage pipe 2 in the inner tube 61, it will form a path for spraying fluorescent pigment, thereby spraying out to form a mark.

[0050] When the contact rail is installed below the design elevation, the package block 3 will be moved further down by the additional relative liquid storage tube 2 through the support plate 7 and the rolling column 71, that is, the discharge tube 31 will reach the position that communicates with the second through hole 22, so that it can be sprayed out to form a mark.

[0051] The present invention can detect whether the contact rail is installed too high or too low through the above method, without the need for position sensors or excessive control. It only requires driving the track trolley 1 to move forward on the track at intervals to detect whether the installation height of the contact rail is qualified. It also automatically sprays fluorescent pigment to mark the unqualified positions, thus facilitating rapid detection of long-distance contact rails.

[0052] 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 positioning detection device for subway power supply installation, characterized in that: Includes a track trolley (1), a square tube (11) fixedly connected to the side of the track trolley (1), a square rod (12) slidably connected inside the square tube (11), a locking rod (13) threadedly connected to the side of the square tube (11), a vertical rod (14) fixedly connected to the upper side of the square rod (12), a scale line is provided on the side of the vertical rod (14), a sliding rod (15) is vertically slidably connected to the vertical rod (14), a bracket (16) is fixedly connected to one side of the sliding rod (15), a liquid storage tube (2) is fixedly connected to the end of the bracket (16), fluorescent pigment is stored inside the liquid storage tube (2), a first through hole (21) and a second through hole (22) are provided on the side of the liquid storage tube (2), a sealing sliding connection of a wrapping block (3) is provided outside the liquid storage tube (2), a tray (7) is fixedly connected to one side of the wrapping block (3), a discharge pipe (31) is fixedly connected to the wrapping block (3), and the discharge pipe (31) is connected to the first through hole (21) or the second through hole (22); The wrapping block (3) is equipped with a damping device, which is used to increase the frictional force of the wrapping block (3) relative to the liquid storage tube (2); The track trolley (1) is equipped with a periodic lifting device (4) on its upper side. The periodic lifting device (4) is used to make the sliding rod (15) periodically rise or fall on the vertical rod (14). The periodic lifting device (4) includes a vertical slide bar (41), which slides through the track trolley (1). A boss (42) is provided in the middle of the vertical slide bar (41). A support spring (43) is fixedly connected between the boss (42) and the track trolley (1). A square hole is provided at the lower end of the vertical slide bar (41). A square rod (44) is slidably connected in the square hole. A buffer spring is fixedly connected between the square rod (44) and the bottom of the square hole. A traveling wheel (45) is rotatably connected to the lower end of the square rod (44). The vertical slide bar (41) is fixedly connected to the side of the triangular frame (46), and the bottom beam of the triangular frame (46) is provided with a guide hole (47) in the vertical direction. The upper side of the track trolley (1) is fixedly connected to the limiting step column (48), and the small end of the step column (48) is slidably connected to the guide hole (47). The sliding rod (15) is laterally slidably connected to the side of the bottom beam of the triangular frame (46).

2. The positioning detection device for subway power supply installation according to claim 1, characterized in that: The upper side of the pallet (7) is rotatably connected to the rolling column (71).

3. The positioning detection device for subway power supply installation according to claim 2, characterized in that: A round rod (32) is fixedly connected to one side of the package block (3). The round rod (32) passes through the bracket (16) and is slidably connected to the bracket (16). A first spring (33) is fixedly connected between the package block (3) and the bracket (16).

4. The positioning detection device for subway power supply installation according to claim 2, characterized in that: The upper side of the track trolley (1) is fixedly connected to the liquid storage tank (5), the liquid storage tank (5) is fixedly connected to the water pump, the outlet pipe of the water pump is equipped with a solenoid valve, the outlet pipe and the liquid storage pipe (2) are fixedly connected to a hose, and the liquid storage pipe (2) is fixedly connected to a pressure sensor. The inner tube (61) is vertically slidably connected inside the liquid storage tube (2). The upper and lower ends of the inner tube (61) are open. The upper and lower ends of the outer side of the inner tube (61) are provided with damping sealing rings (62). The inner tube (61) has two round holes (63) on its side. Each round hole (63) is fixedly connected to a rubber ring (631). The lower end of the inner tube (61) is fixedly connected to a round rod (64). The lower end of the liquid storage tube (2) is fixedly connected to a blind plate. The round rod (64) slides through the blind plate. The upper end of the liquid storage tube (2) is threadedly connected to a cover plate. The lower end of the round rod (64) extends out of the liquid storage tube (2) and is fixedly connected to a second spring (65). The second spring (65) is fixedly connected to the upper side of the square rod (12). The damping device includes a rubber plate (34). The inner wall of the packaging block (3) in contact with the liquid storage tube (2) is provided with a countersunk hole. The rubber plate (34) is slidably connected in the countersunk hole. The outer side of the packaging block (3) is threadedly connected to a screw (35). The screw (35) extends into the countersunk hole and presses against the rubber plate (34). The rubber plate (34) is squeezed and adhered to the outer side of the liquid storage tube (2). The damping retention force of the rubber plate (34) is greater than that of the damping sealing ring (62).

5. A positioning detection device for subway power supply installation according to claim 1, characterized in that: The sliding rod (15) has an elevation line (151) on its side.

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