Surveying and mapping equipment for railway track inspection

Abstract

The invention discloses surveying and mapping equipment for railway track inspection, and relates to the technical field of railway track detection, the surveying and mapping equipment comprises a surveying and mapping plate, the upper surface of the surveying and mapping plate is provided with a laser range finder for measurement, and the other side of the upper surface of the surveying and mapping plate is also provided with a receiving plate for receiving laser beams; a roller body for assisting the surveying and mapping plate to move is rotationally arranged on the lower surface of the surveying and mapping plate. According to the surveying and mapping equipment for railway track inspection, the surveying and mapping plate is placed above the tracks, the two sets of roller bodies make contact with the tracks on the two sides, at the moment, the surveying and mapping plate is pulled by an external vehicle to run, the roller bodies roll along the upper surfaces of the tracks, and in the rolling process of the roller bodies, the surveying and mapping plate is fixed; and the lateral detection mechanism and the upper detection mechanism can be synchronously driven to operate, and the deformation of the lateral distance and the deformation of the upper recess of the track are detected through the lateral detection mechanism and the upper detection mechanism.

Description

Technical Field

[0001] The present invention relates to the technical field of railway track detection, and particularly to a surveying and mapping device for railway track inspection. Background Technique

[0002] When inspecting railway tracks, surveying and mapping equipment is required to assist in measuring the tracks. Track surveying is a technical process that determines the spatial position, shape, and motion state of the tracks through measurement and data analysis. Its core goal is to ensure the safety, accuracy, and efficiency of the tracks.

[0003] The prior art one (a Chinese patent with the publication number CN220685643U and the publication date of March 29, 2024) is a railway track detection device, which relates to the technical field of railway track detection, including two clamping mechanisms, a horizontal detection component, and two fixed cylinders. The horizontal detection component includes a detection piece and a connecting piece. The detection piece is divided into a circular cylinder and an angle scale. An indicating needle is rotatably installed inside the circular cylinder. The bottom of the indicating needle is fixedly connected with a gravity plumb bob through a traction rope. The connecting piece is divided into a support sleeve, a hanging plate, and a connecting screw. A threaded hole is opened at the bottom of the inner wall of the support sleeve, and the connecting screw is threadedly arranged inside the hanging plate. By setting the gravity plumb bob and the traction rope, the indicating needle is kept in a vertically upward state all the time. If the angle scale tilts with the inclination of the railway, the pointing of the indicating needle will change, and the inclination angle of the railway can be detected according to the pointing scale of the indicating needle to facilitate knowing whether the railway is within the safe use range. There is also the prior art two (a Chinese patent with the publication number CN216786721U and the publication date of June 21, 2022), a fine adjustment measurement device for subway track slabs, including a frame support, a prism assembly, and a tripod support component. The prism assembly is installed on the upper end face of the frame support and includes a prism seat and a prism installed on the prism seat. The tripod support component is installed on the lower end face of the frame support and includes a fixed end and a movable end. The fixed end forms a fixed support for the frame support, and the movable end forms an elastic support for the frame support. For the precise adjustment of the subway track slab, in cooperation with a total station for measurement, the fine adjustment of the subway track slab is more intuitive, and the lateral, elevation deviations between the four corners of the track slab and the design values can be directly measured and calculated. The on-site workers can quickly fine-tune the track slab to make the track slab within the design tolerance range. In addition, the smoothness between the slabs is also ensured, making the train run more smoothly, and the work efficiency and accuracy are greatly improved.

[0004] Although the existing railway track detection and measurement devices can detect the state of the railway tracks, during their detection, most of them can only detect the state in one direction and cannot simultaneously detect and process the side distance and the depression above at the same time. At the same time, they cannot reduce the influence of dust adhesion on the detection during the detection.

[0005] Therefore, we propose a surveying and mapping device for railway track inspection to facilitate the solution of the problems raised above. Summary of the Invention

[0006] The purpose of the present invention is to provide a surveying and mapping device for railway track inspection to solve the problems in the above background technology. Currently, during detection in the market, most devices can only detect the status in one direction, and cannot simultaneously detect the side distance and the upper depression. At the same time, during detection, it is impossible to reduce the influence of dust adhesion on the detection.

[0007] To achieve the above purpose, the present invention provides the following technical solution: A surveying and mapping device for railway track inspection, including a surveying and mapping board. On the upper surface of the surveying and mapping board, a laser rangefinder for measurement is provided. On the other side of the upper surface of the surveying and mapping board, a receiving board for receiving the laser beam is also provided. On the lower surface of the surveying and mapping board, a roller body for assisting the movement of the surveying and mapping board is rotatably provided. The roller body is nested on the lower surface of the surveying and mapping board through a roller rotating shaft fixedly connected to its center. Between the inner end of the roller rotating shaft and the lower surface of the surveying and mapping board, a side detection mechanism is provided. The side detection mechanism realizes the deformation detection of the distance between the two rails by adjusting the position of the auxiliary wheels it contains through gas. Between the outer end of the roller rotating shaft and the lower surface of the surveying and mapping board, an upper detection mechanism is provided. The upper detection mechanism feeds back the depression state above the rail through the cooperation of the sliding rod it sets and the surveying paper.

[0008] Preferably, the side detection mechanism includes an air suction hood. The air suction hood is fixedly provided on the lower surface of the surveying and mapping board. Inside the air suction hood, an air suction fan is nested. The air suction fan is fixedly connected to the inner end of the roller rotating shaft. The lower surface of the surveying and mapping board is also fixedly connected with a fixed cylinder. A communication pipe runs through between the inner end of the fixed cylinder and the lower surface of the air suction hood. Inside the fixed cylinder, a moving plate is nestedly connected. At the center of the moving plate, a moving rod nestedly connected to the side of the fixed cylinder is fixedly connected. The outer end of the moving rod is rotatably connected with an auxiliary wheel. Above the side of the moving rod, an adjusting rod is fixedly connected. On the surveying and mapping board, a limiting groove for the movement of the adjusting rod is opened.

[0009] Preferably, an air release port for discharging gas is opened on the side of the fixed cylinder. Exhaust holes are annularly arranged on the moving plate. A first spring is fixedly connected between the moving plate and the inside of the fixed cylinder. The moving plate drives the moving rod to form a sliding structure with the fixed cylinder through gas.

[0010] Preferably, the auxiliary wheel is in mutual contact with the inner side of the rail. Two groups of adjusting rods are symmetrically arranged about the center point of the surveying and mapping board. The upper ends of the two groups of adjusting rods are respectively connected between the laser rangefinder and the receiving board.

[0011] Preferably, the upper detection mechanism includes a linkage shaft nested on the lower surface of the mapping board. A belt transmission structure is fixedly connected between the outer end side of the linkage shaft and the outer end side of the roller rotating shaft. A winding shaft is rotatably connected to the mapping board. A bevel gear assembly engaged with each other is arranged between the lower part of the winding shaft and the end side of the linkage shaft. The sliding rod is nested on the mapping board. A contact ball is nested at the lower end of the sliding rod, and the contact ball is in contact with the upper surface of the railway track.

[0012] Preferably, the mapping paper is wound around the outer sides of the two winding shafts. Guide columns for guiding and limiting the mapping paper are fixedly connected to the upper surface of the mapping board.

[0013] Preferably, the sliding rod is arranged in a "7" shape. A mapping pen is arranged on the upper end side of the sliding rod. The mapping pen is located directly in front of the mapping paper. At the same time, the heights of the left and right sliding rods are different.

[0014] Preferably, a turntable is fixedly connected to the lower end of the winding shaft. A first magnet is fixedly connected to the lower surface of the turntable. A water tank is fixedly connected to the upper surface of the mapping board. A rubber water pipe penetrates through the side of the water tank. A fixed shaft is fixedly connected to the lower surface of the mapping board. A swing box for spraying water is rotatably connected to the outside of the fixed shaft. The other end of the rubber water pipe is fixedly connected to the side of the swing box. A second magnet is fixedly connected to the upper surface of the swing box.

[0015] Preferably, the second magnet and the first magnet have opposite magnetic polarities. The swing box is driven by the second magnet to form a rotating structure with the fixed shaft. A torsion spring is fixedly connected between the upper surface of the swing box and the fixed shaft. At the same time, the water spraying port of the torsion spring is at the same horizontal position as the side of the railway track.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: Place the mapping board above the railway track so that the two roller bodies are respectively in contact with the tracks on both sides. At this time, pull the mapping board to run through an external vehicle, so that the roller bodies roll along the upper surface of the track. During the rolling process of the roller bodies, the side detection mechanism and the upper detection mechanism will be driven synchronously, and the deformation of the side distance and the deformation of the upper depression of the track are detected through the side detection mechanism and the upper detection mechanism.

[0017] When the roller body rolls, the rotating air suction fan sucks the external air into the inside of the air suction cover, and through the conveying action of the connecting pipe, it is introduced into the inside of the fixed cylinder. Under the pushing action of the wind force, the moving plate makes the auxiliary wheel always fit with the inner side of the track through the moving rod. When the position of the moving rod changes during movement, the distance between the laser rangefinder and the receiving plate changes synchronously. The laser rangefinder measures the distance between the inner sides of the two tracks, and detects whether there is a change between the two tracks through the change in distance.

[0018] Through the settings of the exhaust hole and the air release port, it can prevent the continuous entry of wind force into the fixed cylinder, so as to avoid the phenomenon that the internal pressure of the fixed cylinder is too high and it is damaged. At the same time, the rotation speed of the roller body is consistent, so the wind force sucked by the air suction fan is also consistent, so that the auxiliary wheel always fits with the inner side of the track, further ensuring the stability of measuring the internal distance of the track.

[0019] The belt transmission structure drives the sliding rod to rotate and makes the winding shaft rotate. At this time, the surveying paper starts to move. When the upper surface of the railway track is sunken, the sliding rod will synchronously drive the surveying pen to change in height, and the drawn line will also change synchronously. By observing the line drawn on the surveying paper, the depression on the surface of the railway track can be more intuitively reflected. The guiding column can guide and limit the wound surveying paper to prevent the surveying pen from tilting and separating from the surveying pen, resulting in the inability to draw.

[0020] During the rotation of the winding shaft, the moving turntable rotates synchronously, and drives the swinging box to deflect through the intermittent magnetic force between the first magnet and the second magnet. When the swinging box returns to its original position under the elastic force of the torsion spring, it realizes reciprocating deflection. The reciprocatingly deflected swinging box can drive to improve the flushing efficiency of the inner side of the railway track, thereby reducing the possibility that the dust adhering to the railway track affects the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic front view three-dimensional structure diagram of the present invention; Figure 2 It is a schematic rear view three-dimensional structure diagram of the present invention; Figure 3 It is a schematic three-dimensional structure diagram of the surveying board of the present invention; Figure 4 It is a schematic three-dimensional structure diagram of the laser rangefinder of the present invention; Figure 5 It is a schematic three-dimensional structure diagram of the roller body of the present invention; Figure 6 It is a schematic three-dimensional structure diagram of the auxiliary wheel of the present invention; Figure 7 For the present invention Figure 6Schematic diagram of the enlarged structure at A in the [device]; Figure 8 Schematic diagram of the three-dimensional structure of the mapping paper of the present invention; Figure 9 Schematic diagram of the three-dimensional structure of the adjusting rod of the present invention; Figure 10 Schematic diagram of the three-dimensional structure of the turntable of the present invention; Figure 11 Schematic diagram of the three-dimensional structure of the second magnet of the present invention.

[0022] In the figure: 1, mapping board; 2, laser rangefinder; 3, receiving board; 4, water tank; 5, mapping paper; 6, roller body; 7, roller rotating shaft; 8, guiding column; 9, suction hood; 10, suction fan; 11, belt transmission structure; 12, fixed cylinder; 13, air release port; 14, exhaust hole; 15, first spring; 16, moving plate; 17, connecting pipe; 18, adjusting rod; 19, limiting groove; 20, auxiliary wheel; 21, moving rod; 22, bevel gear assembly; 23, winding shaft; 24, sliding rod; 25, abutting ball; 26, mapping pen; 27, linkage shaft; 28, fixed shaft; 29, rubber water pipe; 30, swinging box; 31, turntable; 32, torsion spring; 33, first magnet; 34, second magnet. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] Embodiment 1: As Figures 3 - 7For the technical solution shown, the present invention provides the following technical solution: A surveying and mapping device for railway track inspection, discloses a side detection mechanism. The side detection mechanism detects whether there is a change between two groups of tracks by the change in distance: A laser rangefinder 2 for measurement is provided on the upper surface of the surveying board 1, and a receiving board 3 for receiving the laser beam is also provided on the other side of the upper surface of the surveying board 1. And a roller body 6 for assisting the movement of the surveying board 1 is rotatably provided on the lower surface of the surveying board 1. The roller body 6 is nested on the lower surface of the surveying board 1 through a roller rotating shaft 7 fixedly connected to its center. And a side detection mechanism is provided between the inner end of the roller rotating shaft 7 and the lower surface of the surveying board 1. And the side detection mechanism realizes the deformation detection of the distance between the two side rails by adjusting the position of the auxiliary wheel 20 it contains through gas. The side detection mechanism includes an air suction cover 9, the air suction cover 9 is fixedly provided on the lower surface of the surveying board 1, and an air suction fan 10 is nested inside the air suction cover 9. And the air suction fan 10 is fixedly connected to the inner end of the roller rotating shaft 7. A fixed cylinder 12 is also fixedly connected to the lower surface of the surveying board 1. And a communication pipe 17 is penetrated between the inner end of the fixed cylinder 12 and the lower surface of the air suction cover 9. And a moving plate 16 is nested and connected inside the fixed cylinder 12. A moving rod 21 nested and connected to the side of the fixed cylinder 12 is fixedly connected to the center of the moving plate 16. And an auxiliary wheel 20 is rotatably connected to the outer end of the moving rod 21. An adjusting rod 18 is fixedly connected above the side of the moving rod 21. A limiting groove 19 for the movement of the adjusting rod 18 is opened on the surveying board 1. An air leakage port 13 for discharging gas is opened on the side of the fixed cylinder 12. Exhaust holes 14 are annularly arranged on the moving plate 16. And a first spring 15 is fixedly connected between the moving plate 16 and the inside of the fixed cylinder 12. And the moving plate 16 drives the moving rod 21 to form a sliding structure with the fixed cylinder 12 through gas. The auxiliary wheel 20 is in mutual contact with the inner side of the rail. Two groups of adjusting rods 18 are symmetrically arranged about the center point of the surveying board 1. And the upper ends of the two groups of adjusting rods 18 are respectively connected between the laser rangefinder 2 and the receiving board 3.

[0025] When the roller body 6 rolls, it will drive the roller rotating shaft 7 to rotate synchronously. At this time, the inner end of the roller rotating shaft 7 will drive the suction fan 10 to rotate synchronously. The rotating suction fan 10 sucks the external air into the inside of the suction cover 9. The air sucked into the inside of the suction cover 9 enters the inside of the fixed cylinder 12 through the conveying action of the connecting pipe 17. Under the pushing action of the wind force, the moving plate 16 inside the fixed cylinder 12 drives the moving rod 21 to move limitedly along the fixed cylinder 12 synchronously, so that the auxiliary wheel 20 on the side of the moving rod 21 always fits with the inner side of the track. When the position of the moving rod 21 changes during movement, it can drive the adjusting rod 18 to move limitedly along the inside of the limit groove 19 synchronously, so that the distance between the laser rangefinder 2 and the receiving plate 3 changes synchronously. The laser rangefinder 2 measures the distance between the inner sides of the two tracks, and detects whether there is a change between the two tracks through the change of the distance. When the wind force sucked by the suction fan 10 pushes the moving plate 16 to move, at this time, part of the wind force will flow from the exhaust hole 14 opened on the moving plate 16 to the front side of the fixed cylinder 12 and is discharged outward through the air release port 13 opened on the side of the fixed cylinder 12, so as to prevent the wind force from continuously entering the inside of the fixed cylinder 12 and causing the phenomenon that the pressure inside the fixed cylinder 12 is too high and it is damaged. At the same time, the rotation speed of the roller body 6 is consistent, so the wind force sucked by the suction fan 10 is also consistent, so that the auxiliary wheel 20 always fits with the inner side of the track, further ensuring the stability of measuring the distance inside the track.

[0026] Embodiment 2: As Figure 2 , Figure 3 , Figure 8 and Figure 9For the technical solution shown, the present invention provides the following technical solution: A surveying and mapping device for railway track inspection, which discloses an upper detection mechanism. The upper detection mechanism feeds back the depression state above the railway track: An upper detection mechanism is provided between the outer end of the roller rotating shaft 7 and the lower surface of the surveying board 1. The upper detection mechanism feeds back the depression state above the railway track through the cooperation between the sliding rod 24 it is provided with and the surveying paper 5. The upper detection mechanism includes a linkage shaft 27. The linkage shaft 27 is nested and connected to the lower surface of the surveying board 1, and a belt transmission structure 11 is fixedly connected between the outer end side of the linkage shaft 27 and the outer end side of the roller rotating shaft 7. A winding shaft 23 is rotatably connected to the surveying board 1, and an engaging bevel gear assembly 22 is provided between the lower part of the winding shaft 23 and the end side of the linkage shaft 27. The sliding rod 24 is nested and connected to the surveying board 1, and a contact ball 25 is nested and connected to the lower end of the sliding rod 24, and the contact ball 25 is in contact with the upper surface of the railway track. The surveying paper 5 is wound around the outer sides of the two winding shafts 23. A guiding column 8 for guiding and limiting the surveying paper 5 is fixedly connected to the upper surface of the surveying board 1. The sliding rod 24 is arranged in a "7" shape, and a surveying pen 26 is provided on the upper end side of the sliding rod 24, and the surveying pen 26 is located directly in front of the surveying paper 5. At the same time, the heights of the left and right sliding rods 24 are different.

[0027] When the roller rotating shaft 7 rotates, its outer end will drive the sliding rod 24 to rotate through the belt transmission structure 11. When the sliding rod 24 rotates, it will synchronously drive the winding shaft 23 to rotate under the transmission of the bevel gear assembly 22. At this time, one winding shaft 23 unwinds the surveying paper 5, and the other winding shaft 23 winds the surveying paper 5. When the surveying board 1 moves, it will synchronously drive the contact ball 25 to contact the upper surface of the railway track through the sliding rod 24. When the upper surface of the railway track is sunken, the sliding rod 24 will synchronously drive the surveying pen 26 to change in height. The surveying pen 26 is in contact with the surveying paper 5. When the height of the surveying pen 26 changes, the line drawn by it will also change synchronously. By observing the line drawn on the surveying paper 5, the depression on the surface of the railway track can be more intuitively fed back. At the same time, the surveying paper 5 is wound around the front side of the guiding column 8. The guiding column 8 can guide and limit the wound surveying paper 5, thereby avoiding the phenomenon that when one surveying pen 26 winds more and the other surveying pen 26 winds less, the surveying pen 26 tilts and separates from the surveying pen 26 and cannot perform drawing.

[0028] Embodiment Three: As Figure 1 、 Figure 3 、 Figure 9 and Figure 10For the technical solution shown, the present invention provides the following technical solution: A surveying and mapping device for railway track inspection, discloses a swing box 30. By the reciprocally swinging swing box 30, the flushing efficiency of the railway tracks can be improved, preventing dust adhesion on the railway tracks from affecting the detection accuracy: The lower end of the winding shaft 23 is fixedly connected to a turntable 31, and the lower surface of the turntable 31 is fixedly connected to a first magnet 33. The upper surface of the surveying board 1 is fixedly connected to a water tank 4, and a rubber water pipe 29 is penetrated through the side of the water tank 4. The lower surface of the surveying board 1 is fixedly connected to a fixed shaft 28, and the outside of the fixed shaft 28 is rotatably connected to a swing box 30 for water spraying operation. And the side of the swing box 30 is fixedly connected to the other end of the rubber water pipe 29. At the same time, the upper surface of the swing box 30 is fixedly connected to a second magnet 34. The second magnet 34 and the first magnet 33 have opposite magnetic polarities, and the swing box 30 forms a rotating structure with the fixed shaft 28 driven by the second magnet 34. And a torsion spring 32 is fixedly connected between the upper surface of the swing box 30 and the fixed shaft 28. At the same time, the water spraying port of the torsion spring 32 is at the same horizontal position as the side of the railway track.

[0029] During the rotation of the winding shaft 23, it will synchronously drive the turntable 31 to rotate. At this time, the turntable 31 can drive the first magnet 33 fixed to its lower surface to rotate synchronously. The first magnet 33 intermittently contacts the second magnet 34, thereby driving the swing box 30 to deflect through magnetic force. When the swing box 30 is not affected by the magnetic force, the swing box 30 returns to its original position under the elastic force of the torsion spring 32, thus realizing reciprocating deflection. After the water in the water tank 4 enters the reciprocally swinging swing box 30, the reciprocally deflected swing box 30 can drive to improve the flushing efficiency of the inner side of the railway track, thereby reducing the possibility of dust adhesion on the railway track affecting the detection accuracy.

[0030] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A surveying and mapping device for railway track inspection, comprising a surveying and mapping board (1). A laser rangefinder (2) for measurement is arranged on the upper surface of the surveying and mapping board (1). On the other side of the upper surface of the surveying and mapping board (1), a receiving board (3) for receiving laser beams is also arranged. And a roller body (6) for assisting the movement of the surveying and mapping board (1) is rotatably arranged on the lower surface of the surveying and mapping board (1). It is characterized in that, The roller body (6) is nested on the lower surface of the surveying board (1) through a roller rotating shaft (7) fixedly connected to its center. A side detection mechanism is provided between the inner end of the roller rotating shaft (7) and the lower surface of the surveying board (1). The side detection mechanism realizes the deformation detection of the distance between the two side rails by adjusting the position of the auxiliary wheel (20) it contains through gas. An upper detection mechanism is provided between the outer end of the roller rotating shaft (7) and the lower surface of the surveying board (1). The upper detection mechanism feeds back the concave state above the rail through the cooperation of the sliding rod (24) it is provided with and the surveying paper (5).

2. The surveying and mapping equipment for railway track inspection according to claim 1, characterized in that: The side detection mechanism includes an air suction cover (9). The air suction cover (9) is fixedly arranged on the lower surface of the surveying board (1). An air suction fan (10) is nested inside the air suction cover (9). The air suction fan (10) is fixedly connected to the inner end of the roller rotating shaft (7). A fixed cylinder (12) is also fixedly connected to the lower surface of the surveying board (1). A communication pipe (17) is penetrated between the inner end of the fixed cylinder (12) and the lower surface of the air suction cover (9). A moving plate (16) is nested and connected inside the fixed cylinder (12). A moving rod (21) fixedly connected to the center of the moving plate (16) is nested and connected to the side of the fixed cylinder (12). The outer end of the moving rod (21) is rotatably connected to an auxiliary wheel (20). An adjusting rod (18) is fixedly connected above the side of the moving rod (21). A limiting groove (19) for the adjusting rod (18) to move is opened on the surveying board (1).

3. The surveying and mapping equipment for railway track inspection according to claim 2, characterized in that: An air leakage port (13) for discharging gas is opened on the side of the fixed cylinder (12). Exhaust holes (14) are annularly arranged on the moving plate (16). A first spring (15) is fixedly connected between the moving plate (16) and the inside of the fixed cylinder (12). The moving plate (16) drives the moving rod (21) to form a sliding structure with the fixed cylinder (12) through gas.

4. A surveying and mapping device for railway track inspection according to claim 2, characterized in that: The auxiliary wheel (20) is in mutual contact with the inner side of the rail. Two groups of adjusting rods (18) are symmetrically arranged about the center point of the surveying board (1). The upper ends of the two groups of adjusting rods (18) are respectively connected to a laser rangefinder (2) and a receiving plate (3).

5. A surveying and mapping device for railway track inspection according to claim 1, characterized in that: The upper detection mechanism includes a linkage shaft (27). The linkage shaft (27) is nested and connected to the lower surface of the surveying board (1). A belt transmission structure (11) is fixedly connected between the outer side of the linkage shaft (27) and the outer side of the outer end of the roller rotating shaft (7). A winding shaft (23) is rotatably connected to the surveying board (1). A bevel gear assembly (22) is arranged between the lower part of the winding shaft (23) and the side of the end of the linkage shaft (27) and meshes with each other. The sliding rod (24) is nested and connected to the surveying board (1). A contact ball (25) is nested and connected to the lower end of the sliding rod (24). The contact ball (25) is in contact with the upper surface of the rail.

6. A surveying and mapping device for railway track inspection according to claim 5, characterized in that: The surveying paper (5) is wound around the outer sides of the two winding shafts (23). Guide columns (8) for guiding and limiting the surveying paper (5) are fixedly connected to the upper surface of the surveying board (1).

7. A surveying and mapping device for railway track inspection according to claim 6, characterized in that: The sliding rod (24) is arranged in a "7" - shaped structure. A surveying pen (26) is provided on the upper side of the sliding rod (24). The surveying pen (26) is located directly in front of the surveying paper (5). At the same time, the heights of the left - and right - hand sets of sliding rods (24) are different.

8. A surveying and mapping device for railway track inspection according to claim 5, characterized in that: A turntable (31) is fixedly connected to the lower end of the winding shaft (23). A first magnetic block (33) is fixedly connected to the lower surface of the turntable (31). A water tank (4) is fixedly connected to the upper surface of the surveying board (1). A rubber water pipe (29) penetrates through the side of the water tank (4). A fixed shaft (28) is fixedly connected to the lower surface of the surveying board (1). A swing box (30) for water - spraying operation is rotatably connected to the outside of the fixed shaft (28). The side of the swing box (30) is fixedly connected to the other end of the rubber water pipe (29). A second magnetic block (34) is fixedly connected to the upper surface of the swing box (30).

9. A surveying and mapping device for railway track inspection according to claim 8, characterized in that: The second magnetic block (34) and the first magnetic block (33) have opposite magnetic polarities. The swing box (30) forms a rotating structure with the fixed shaft (28) driven by the second magnetic block (34). A torsion spring (32) is fixedly connected between the upper surface of the swing box (30) and the fixed shaft (28). At the same time, the water - spraying port of the torsion spring (32) is at the same horizontal position as the side of the railway track.

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