Maintenance car for detecting distance between railway tracks

Abstract

The utility model discloses a maintenance car for detecting the distance between railway tracks. The maintenance car comprises a car body, a first self-adjusting piece and a second self-adjusting piece, wherein the first self-adjusting piece and the second self-adjusting piece are arranged on the left side and the right side of the car body respectively and can move left and right relative to the car body. A range finder is arranged on the first self-adjusting part, and reflectors which are bilaterally symmetrical about the vehicle body are correspondingly arranged on the second self-adjusting part; in the advancing process of the vehicle body, the first self-adjusting piece and the second self-adjusting piece abut against the outer side walls of the two rails all the time and can adaptively move in the left-right direction of the vehicle body along with the outer side walls of the rails, so that the distance between the two self-adjusting pieces is adaptively changed along with the distance between the two rails. The maintenance car in the embodiment can be used for bearing and transferring maintenance equipment, parts and the like; in addition, after the distance measuring instrument is started, light emitted by the distance measuring instrument irradiates the light reflecting plate, and therefore the distance between the tracks is measured in the advancing process of the vehicle body.

Description

Technical Field

[0001] The utility model relates to the technical field of railway track detection equipment, in particular to a maintenance vehicle for detecting the distance between railway tracks. Background Art

[0002] Railway tracks, the tracks on which train wheels run, consist of two parallel steel rails. Routine railway inspection and maintenance often involves transporting inspection equipment, transferring damaged parts, and checking the spacing between the rails.

[0003] In the existing technology, railway maintenance vehicles can only carry maintenance equipment and transfer parts, but cannot detect the distance between rails while the vehicle is driving, resulting in low maintenance efficiency. Utility Model Content

[0004] The utility model provides a maintenance vehicle for detecting the distance between railway tracks. When the maintenance vehicle is running on the railway track, the maintenance vehicle can be used to simultaneously carry out transportation and detect the distance between railway tracks.

[0005] The utility model provides a maintenance vehicle for detecting the distance between railway tracks, the maintenance vehicle comprising a vehicle body, and a first self-adjusting member and a second self-adjusting member which are respectively arranged on the left and right sides of the vehicle body and can move left and right relative to the vehicle body;

[0006] The first self-adjusting member is provided with a rangefinder and / or a reflector, and the second self-adjusting member is correspondingly provided with a reflector and / or a rangefinder, the rangefinder and its corresponding reflector being symmetrical about the vehicle body, and the light emitted by the rangefinder can be irradiated on the corresponding reflector;

[0007] During the movement of the vehicle body, the first self-adjusting member and the second self-adjusting member are always against the outer side walls of the two tracks, and can adaptively move along the left and right directions of the vehicle body along the outer side walls of the tracks, so that the distance between the two self-adjusting members changes adaptively along the distance between the two tracks.

[0008] As an embodiment, adjustment drive members are respectively provided on the left and right sides of the vehicle body, and the adjustment drive members apply forces to the first self-adjusting member and the second self-adjusting member respectively; the first self-adjusting member and the second self-adjusting member always remain against the outer walls of the two tracks under the said forces.

[0009] As an embodiment, the adjustment drive member is a first spring.

[0010] In one embodiment, a mounting frame is provided on the vehicle body, and a placement groove is formed on the mounting frame extending in the left-right direction of the vehicle body, and the first self-adjusting member and the second self-adjusting member extend in the longitudinal direction and pass through the placement groove respectively;

[0011] Rollers are respectively installed on the first self-adjusting member and the second self-adjusting member. The rollers are arranged in the placement groove and can slide along the length direction of the placement groove.

[0012] As an embodiment, balls are respectively provided on the mating surfaces of the first self-adjusting member and the second self-adjusting member for mating with the outer side wall of the track;

[0013] The first self-adjusting member and the second self-adjusting member are respectively attached to the outer side wall of the track through balls and can be slidably matched with the track along the length direction of the track.

[0014] As an embodiment, the rangefinder outer cover is provided with a protective shell, the protective shell includes a detachably connected base and a cover body, the base is fixedly mounted on the first self-adjusting member, and the rangefinder is placed in the accommodating cavity of the protective shell.

[0015] As an embodiment, a rain cover is provided on the vehicle body, and the rain cover comprises:

[0016] A top cover is provided above the vehicle body;

[0017] Side curtains are connected to the edge of the top cover and are arranged around the circumference of the vehicle body.

[0018] As an embodiment, a counterweight is provided on an edge of the side curtain away from the top cover.

[0019] As an embodiment, the counterweight block is provided with an insert, and the vehicle body is correspondingly provided with an insert socket, and the insert socket is formed with a slot for inserting the insert;

[0020] The socket is provided with a latch, one end of which extends into the plug-in slot and is plugged into the limiting hole on the plug-in unit.

[0021] As an embodiment, it further includes a storage assembly arranged near the edge of the top cover, the storage assembly has a storage cavity, and the side curtain can be stored in the storage cavity after being rolled up.

[0022] As an embodiment, the storage assembly includes a folding plate located outside the side curtain, the upper edge of the folding plate is connected to the edge of the top cover, and a hook is provided on the lower edge of the folding plate;

[0023] The vehicle body is provided with a hook portion matched with the hook, and the hook portion is located on the inner side of the side curtain.

[0024] As an embodiment, the side curtains are made of transparent material, and the top cover is made of opaque material.

[0025] Compared with the prior art, the advantages of the present invention are:

[0026] 1. In this embodiment, the body of the maintenance vehicle can be used to carry and transport maintenance equipment and parts. After the rangefinder is turned on, the light emitted by the rangefinder on one side of the left or right direction is irradiated on the reflective plate on the other side, thereby completing the measurement of the track spacing during the movement of the vehicle body.

[0027] In addition, the first self-adjusting part and the second self-adjusting part used to install the rangefinder and the light-emitting board are always against the outer walls of the two tracks. The distance between the rangefinder and the light-emitting board can change with the distance between the two tracks, ensuring the accuracy of the distance measurement.

[0028] 2. Ball bearings are provided between the mating surface of the first self-adjusting member and the track, and between the mating surface of the second self-adjusting member and the track, respectively. When the maintenance vehicle is moving, the first self-adjusting member and the second self-adjusting member can slide smoothly along the length direction of the track on which they stop.

[0029] 3. A counterweight is provided on the edge of the side curtain away from the top cover.

[0030] In non-rainy weather, the side curtains can be rolled up.

[0031] In rainy weather, the rolled-up side curtains are released, and the bottom edge of the side curtains is provided with a counterweight, which makes it easy to release and open the side curtains. In addition, the counterweight strengthens the sag of the side curtains and can prevent the side curtains from being blown up by the wind.

[0032] In order to be able to store the side curtains in non-rainy weather, the maintenance vehicle in this embodiment is also provided with a storage assembly. The storage assembly is arranged near the edge of the top cover and has a storage cavity. The side curtains can be stored in the storage cavity after being rolled up.

[0033] 4. The seat plate in this embodiment is provided with a seat cushion and the backrest is provided with a cushion, which can improve the comfort of the seat on the vehicle body.

[0034] The bottom of the backrest is hinged to the seat plate, and the backrest angle can be adjusted. An adjustment limit component is provided between the backrest and the fixing frame. The adjustment limit component is used to limit the backrest to limit the rotation angle of the backrest. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The present invention will be described in more detail below based on embodiments with reference to the accompanying drawings.

[0036] Figure 1 This is the main view of the maintenance vehicle;

[0037] Figure 2 yes Figure 1 Left side view of the central inspection vehicle;

[0038] Figure 3 yes Figure 1 A partial enlarged view of point A in the middle;

[0039] Figure 4 yes Figure 2 A partial enlarged view of point B in the middle;

[0040] Figure 5 yes Figure 2 A partial enlarged view of point C in the middle;

[0041] Figure 6 yes Figure 2 A partial enlarged view of point D in the middle.

[0042] Reference numerals:

[0043] 1. Vehicle body; 11. Wheels;

[0044] 21. First self-adjusting member; 22. Second self-adjusting member;

[0045] 23. Rangefinder; 24. Reflector;

[0046] 25. First spring; 26. Mounting frame; 261. Mounting slot;

[0047] 27. Roller; 28. Ball;

[0048] 3. Protective shell;

[0049] 31. Base; 311. Card slot; 32. Cover; 321. Card protrusion;

[0050] 4. Rain cover; 41. Top cover; 42. Side curtains;

[0051] 5. Counterweight;

[0052] 6. Disassemble and assemble components; 61. Install the plug; 62. Install the socket; 63. Latch; 64. Second spring;

[0053] 7. Storage assembly; 71. Folding plate; 72. Hook; 73. Hooking portion;

[0054] 8. Seat;

[0055] 81. Fixed frame; 82. Seat board; 83. Backrest; 84. Seat cushion; 85. Back cushion;

[0056] 86. Limit block; 87. Mounting block; 88. Bolt;

[0057] 100. Track. DETAILED DESCRIPTION

[0058] The present invention will be further described below with reference to the accompanying drawings.

[0059] An embodiment of the present utility model provides a maintenance vehicle for detecting the distance between railway tracks. The maintenance vehicle includes a vehicle body 1 , a first self-adjusting member 21 and a second self-adjusting member 22 .

[0060] like Figure 1 As shown, wheels 11 adapted to the track 100 are provided at the bottom of the vehicle body 1 , and the wheels 11 run on the track 100 when the maintenance vehicle is traveling.

[0061] The first and second self-adjusting members 21, 22 are disposed on the left and right sides of the vehicle body 1 and are movable relative to the vehicle body 1. A rangefinder 23 is provided on the first self-adjusting member 21, and a reflector 24 is provided on the second self-adjusting member 22. The rangefinder 23 and reflector 24 are symmetrical about the vehicle body 1, and the light emitted by the rangefinder 23 is always reflected on the reflector 24. During the movement of the vehicle body 1, the first and second self-adjusting members 21, 22 are always in contact with the outer walls of the two tracks 100 and can adaptively move along the left and right directions of the vehicle body 1 according to the position and shape of the outer walls of the tracks 100, so that the distance between the two self-adjusting members changes adaptively with the distance between the two tracks 100. The rangefinder 23 is a laser rangefinder.

[0062] It should be noted that Figure 1 The arrow direction in FIG. 1 is the left-right direction of the vehicle body, and is also the moving direction of the first self-adjusting member 21 and the second self-adjusting member 22 .

[0063] In this embodiment, the body 1 of the maintenance vehicle can be used to carry and transport maintenance equipment and parts; after the rangefinder 23 is turned on, the light emitted by the rangefinder 23 on one side of the left or right direction is irradiated on the reflective plate 24 on the other side, thereby completing the measurement of the track spacing during the movement of the vehicle body 1.

[0064] In addition, the first self-adjusting part 21 and the second self-adjusting part 22 used to install the rangefinder 23 and the light-emitting plate are always against the outer walls of the two tracks 100. The distance between the rangefinder 23 and the light-emitting plate can change with the distance between the two tracks 100, ensuring the accuracy of the distance measurement.

[0065] As another embodiment, only a reflector is provided on the first self-adjusting member, and only a rangefinder is provided on the second self-adjusting member. The reflector and the rangefinder are symmetrical with respect to the vehicle body.

[0066] In another embodiment, a rangefinder and a reflector are provided on the first self-adjusting member, and a corresponding reflector and rangefinder are provided on the second self-adjusting member. Providing at least two sets of rangefinders and reflectors, each positioned opposite each other along the left-right direction of the vehicle body, allows for determination based on the at least two sets of measured rail spacing data, thereby improving detection accuracy.

[0067] like Figure 1 and Figure 3 As shown, adjustment driving members are respectively provided on the left and right sides of the vehicle body 1, and the adjustment driving members apply forces to the first self-adjusting member 21 and the second self-adjusting member 22 respectively; the first self-adjusting member 21 and the second self-adjusting member 22 always remain against the outer walls of the two tracks 100 under the applied forces.

[0068] As an implementation manner, the adjustment driving member is the first spring 25 .

[0069] A mounting bracket 26 is fixedly provided on the vehicle body 1 , one end of the first spring 25 is fixed on the mounting bracket 26 , and the other end is connected to the corresponding first self-adjusting member 21 or the second self-adjusting member 22 .

[0070] For example, Figure 3 The first spring 25 is a tension spring, which applies a rightward pulling force to the first self-adjusting member 21. When the track 100 on which the first self-adjusting member 21 abuts bulges outward to bend outward, the first self-adjusting member 21 moves outward along the left and right directions of the vehicle body 1 under the action of the track 100 (i.e., corresponding to Figure 1 and Figure 3 When the first self-adjusting member 21 moves to the left), the first spring 25 pulls the first self-adjusting member 21 to the right and keeps the first self-adjusting member 21 abutting against the outer wall of the track 100; when the track 100 against which the first self-adjusting member 21 abuts is concave inward to bend inward, the first spring 25 pulls the first self-adjusting member 21 to the right and moves the first self-adjusting member 21 to the right, and keeps it abutting against the outer wall of the track 100.

[0071] Similarly, the second self-adjusting member 22 can also move in the left-right direction according to the shape or position of the track 100 on which it abuts, which will not be described in detail.

[0072] As an implementation method, Figure 1 and Figure 3 As shown, a mounting frame 26 is provided on the vehicle body 1, and a placement groove 261 extending in the left-right direction of the vehicle body 1 is formed on the mounting frame 26. The first self-adjusting member 21 and the second self-adjusting member 22 are rod-shaped structures extending in the longitudinal direction and passing through the placement groove 261;

[0073] Rollers 27 are mounted on the first self-adjusting member 21 and the second self-adjusting member 22 , respectively. The rollers 27 are disposed in the seating groove 261 and can slide along the length direction of the seating groove 261 .

[0074] With this arrangement, the first self-adjusting member 21 and the second self-adjusting member 22 can be mounted on the mounting frame 26 and can smoothly move along the left-right direction of the vehicle body 1 on the mounting frame 26 .

[0075] As an implementation method, Figure 1As shown, balls 28 are respectively provided on the mating surfaces of the first self-adjusting member 21 and the second self-adjusting member 22 for mating with the outer wall of the track 100; the first self-adjusting member 21 and the second self-adjusting member 22 are respectively attached to the outer wall of the track 100 through the balls 28, and can be slidably mated with the track 100 along the length direction of the track 100.

[0076] In this way, balls 28 are respectively provided between the mating surface of the first self-adjusting part 21 and the track 100, and between the mating surface of the second self-adjusting part 22 and the track 100. During the movement of the maintenance vehicle, it can ensure that the first self-adjusting part 21 and the second self-adjusting part 22 can slide smoothly along the length direction of the track 100 on the track 100 where they stop.

[0077] like Figure 3 As shown, the outer cover of the rangefinder 23 is provided with a protective shell 3, which includes a detachably connected base 31 and a cover body 32. The base 31 is fixedly mounted on the first self-adjusting member 21. The rangefinder 23 is arranged in the accommodating cavity of the protective shell 3, and the rangefinder 23 and the base 31 bracket are fixedly mounted by a threaded connection.

[0078] As an embodiment, a latching protrusion 321 is provided on the bottom edge of the cover body 32, and a latching groove 311 is correspondingly provided on the top wall of the base 31. The latching groove 311 and the latching protrusion 321 are snap-fitted together to facilitate the detachable installation of the cover body 32 on the base 31.

[0079] When the rangefinder 23 needs to be used, the cover 32 is removed from the base 31 and the rangefinder 23 is turned on to measure the track spacing; when the rangefinder 23 is not needed, the cover 32 is installed on the base 31 to protect the rangefinder 23 and prevent the rangefinder 23 from being damaged due to long-term exposure to the external environment.

[0080] Taking the influence of weather into consideration, a rain cover 4 is provided on the bracket of the vehicle body 1 in this embodiment. Figure 1 and Figure 2 As shown, the rain cover 4 includes a top cover 41 covering the vehicle body 1 and side curtains 42 connected to the edges of the top cover 41 , and the side curtains 42 are arranged around the circumference of the vehicle body 1 .

[0081] like Figure 2 and Figure 4 As shown, a counterweight 5 is provided on the edge of the side curtain 42, away from the top cover 41. In calm weather, the side curtain 42 can be rolled up. In rainy weather, the rolled-up side curtain 42 is released. The counterweight 5 provided on the bottom edge of the side curtain 42 allows the side curtain 42 to be easily released and opened. Furthermore, the counterweight 5 enhances the droop of the side curtain 42, preventing it from being blown up by the wind.

[0082] In order to enhance the stability of the side curtain 42 in the released state, a disassembly assembly 6 is provided between the counterweight 5 and the vehicle body 1 to facilitate fixing the counterweight 5 to the vehicle body 1 , thereby fixing the side curtain 42 .

[0083] like Figure 4 As shown, the assembly and disassembly assembly 6 includes an insert 61 fixed to the counterweight 5 and a corresponding receptacle 62 on the vehicle body 1. The receptacle 62 has a slot for inserting the insert 61, and a latch 63 is provided on the receptacle 62. When the insert 61 is inserted into the slot on the receptacle 62, the latch 63 is inserted into the upper limit hole formed in the insert 61, securing the counterweight 5 to the vehicle body 1 and thus the side curtain 42. A second spring 64 is provided on the latch 63, which forces the latch 63 into the slot. This arrangement enables quick assembly and disassembly of the insert 61 and the receptacle 62.

[0084] In order to be able to store the side curtains 42 in non-rainy weather, the maintenance vehicle in this embodiment is further provided with a storage assembly 7, such as Figure 2 and Figure 5 As shown, the storage assembly 7 is disposed near the edge of the top cover 41 and has a storage cavity, and the side curtains 42 can be stored in the storage cavity after being rolled up.

[0085] As an embodiment, the storage assembly 7 includes a folding plate 71 located on the outside of the side curtain 42, the upper edge of the folding plate 71 is connected to the edge of the top cover 41, and a hook 72 is provided on the lower edge of the folding plate 71; a hook portion 73 that cooperates with the hook 72 is provided on the bracket of the vehicle body 1, and the hook portion 73 is located on the inner side of the side curtain 42.

[0086] In this arrangement, the side curtain 42 is located between the folding plate 71 and the hook portion 73 on the vehicle body 1 bracket. When the side curtain 42 is folded or rolled up, the hook 72 on the folding plate 71 is hooked and connected to the hook portion 73, so that the rolled-up side curtain 42 can be kept in the storage cavity surrounded by the folding plate 71 and the vehicle body 1 bracket.

[0087] As an embodiment, the side curtains 42 are made of transparent material. After the side curtains 42 are released and positioned around the vehicle body 1 , the transparent side curtains 42 can be kept out of sight of maintenance personnel inside the vehicle, facilitating driving.

[0088] As an embodiment, the top cover 41 is made of an opaque material. On sunny days, the opaque top cover 41 can prevent people in the vehicle from being exposed to the sun.

[0089] like Figure 2 and Figure 6As shown, a seat 8 is provided on the vehicle body 1 , and the seat 8 includes a fixing frame 81 fixedly mounted on the vehicle body 1 , a seat plate 82 mounted on the fixing frame 81 , and a backrest 83 connected to the seat plate 82 .

[0090] In order to improve the comfort of the seat 8 on the vehicle body 1, a seat cushion 84 is provided on the seat plate 82 in this embodiment, and a back cushion 85 is provided on the backrest 83. The inside of the seat cushion 84 and the back cushion 85 are filled with sponge respectively.

[0091] The contact outer layers of the seat cushion 84 and the back cushion 85 are made of oil-proof fabric, which has the effect of resisting dirt and stain.

[0092] The backrest 83 in this embodiment is adjustable in angle. The bottom of the backrest 83 is hinged to the seat 82. An adjustment limit assembly is provided between the backrest 83 and the fixing frame 81. The adjustment limit assembly is used to limit the backrest 83 to limit the rotation angle of the backrest 83.

[0093] The adjustment limit assembly includes a limit block 86 and a support limit member.

[0094] The limiting block 86 is provided on the back of the backrest 83 , and a limiting groove is provided on the bottom wall of the limiting block 86 .

[0095] The support limiter is mounted on the fixing frame 81 so as to be adjustable up and down. One end of the support limiter extends upward and enters the limit slot on the limit block 86 , and then stops on the top wall of the limit slot to limit the adjustment of the backrest 83 .

[0096] A mounting block 87 is fixed on the fixing frame 81 below the limiting block 86. The supporting limiting member is a bolt 88 threadedly connected to the mounting block 87. One end of the bolt 88 passes through the threaded hole on the mounting block 87 and then stops on the top wall of the limiting groove.

[0097] When the backrest 83 of the seat 8 needs to be adjusted, the bolt 88 can be screwed so that the bolt 88 moves up and down on the mounting block 87, and the backrest 83 can be rotated at this time; when the backrest 83 is rotated to a suitable angle, the bolt 88 is screwed again, and the bolt 88 limits the backrest 83 to this angle.

[0098] While the present invention has been described with reference to preferred embodiments, various modifications may be made and equivalent components may be substituted without departing from the scope of the present invention. In particular, the various technical features described in the various embodiments may be combined in any manner, provided no structural conflicts exist. The present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. A maintenance vehicle for detecting the distance between railway tracks, characterized in that: It includes a vehicle body, and a first self-adjusting member and a second self-adjusting member respectively arranged on the left and right sides of the vehicle body and capable of moving left and right relative to the vehicle body; The first self-adjusting member is provided with a rangefinder and / or a reflector, and the second self-adjusting member is correspondingly provided with a reflector and / or a rangefinder, the rangefinder and its corresponding reflector being symmetrical about the vehicle body, and the light emitted by the rangefinder can be irradiated on the corresponding reflector; During the movement of the vehicle body, the first self-adjusting member and the second self-adjusting member are always against the outer side walls of the two tracks, and can adaptively move along the left and right directions of the vehicle body along the outer side walls of the tracks, so that the distance between the two self-adjusting members changes adaptively along the distance between the two tracks.

2. The inspection vehicle for detecting the distance between railway tracks according to claim 1, characterized in that: Adjustment drive members are respectively provided on the left and right sides of the vehicle body, and the adjustment drive members apply forces to the first self-adjusting member and the second self-adjusting member respectively; the first self-adjusting member and the second self-adjusting member always remain against the outer walls of the two tracks under the forces.

3. The inspection vehicle for detecting the distance between railway tracks according to claim 2, characterized in that: The adjustment driving member is a first spring.

4. The inspection vehicle for detecting the distance between railway tracks according to claim 2 or 3, characterized in that: The vehicle body is provided with a mounting frame, the mounting frame is formed with a placement groove extending in the left-right direction of the vehicle body, the first self-adjusting member and the second self-adjusting member respectively extend in the longitudinal direction and pass through the placement groove; Rollers are respectively installed on the first self-adjusting member and the second self-adjusting member. The rollers are arranged in the placement groove and can slide along the length direction of the placement groove.

5. The inspection vehicle for detecting the distance between railway tracks according to any one of claims 1 to 3, characterized in that: Ball bearings are respectively provided on the mating surfaces of the first self-adjusting member and the second self-adjusting member for mating with the outer side wall of the track; The first self-adjusting member and the second self-adjusting member are respectively attached to the outer side wall of the track through balls and can be slidably matched with the track along the length direction of the track.

6. The inspection vehicle for detecting the distance between railway tracks according to any one of claims 1 to 3, characterized in that: The rangefinder outer cover is provided with a protective shell, which includes a detachably connected base and a cover body, the base is fixedly mounted on the first self-adjusting member, and the rangefinder is placed in the accommodating cavity of the protective shell.

7. The inspection vehicle for detecting the distance between railway tracks according to any one of claims 1 to 3, characterized in that: The vehicle body is provided with a rain cover, which includes: A top cover is provided above the vehicle body; Side curtains are connected to the edge of the top cover and are arranged around the circumference of the vehicle body.

8. The inspection vehicle for detecting the distance between railway tracks according to claim 7, characterized in that: A counterweight is provided on an edge of the side curtain away from the top cover.

9. The inspection vehicle for detecting the distance between railway tracks according to claim 8, characterized in that: The counterweight block is provided with an insert, and the vehicle body is correspondingly provided with an insert socket, and the insert socket is formed with a slot for inserting the insert; The socket is provided with a latch, one end of which extends into the plug-in slot and is plugged into the limiting hole on the plug-in unit.

10. The inspection vehicle for detecting the distance between railway tracks according to claim 7, characterized in that: It also includes a storage component arranged near the edge of the top cover, and the storage component has a storage cavity. The side curtain can be stored in the storage cavity after being rolled up.

11. The inspection vehicle for detecting the distance between railway tracks according to claim 10, characterized in that: The storage assembly includes a folding plate located outside the side curtain, the upper edge of the folding plate is connected to the edge of the top cover, and the lower edge of the folding plate is provided with a hook; The vehicle body is provided with a hook portion matched with the hook, and the hook portion is located on the inner side of the side curtain.

12. The inspection vehicle for detecting the distance between railway tracks according to claim 7, characterized in that: The side curtains are made of transparent material, and the top cover is made of opaque material.

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