A railway line center inspection vehicle

Abstract

A railway line center inspection vehicle includes a traveling trolley, a gauge ruler, an ultra-high detector and a prism measuring device. The gauge ruler includes a bottom plate and two racks. An intermediate gear is arranged at the center of the bottom plate. One rack is arranged on one side of the intermediate gear and a scale is arranged on the rack. Another rack is arranged on the other side of the intermediate gear and a pointer is arranged on the rack. The rack meshes with the intermediate gear. A spring is arranged at one end of the rack. An electric insulating bearing is connected to the other end of the rack. The electric insulating bearing contacts the inner side of the rail. A support frame is arranged on the bottom plate and the rack. The support frame is connected to the traveling trolley. The prism measuring device includes a prism, a prism rod and a pressure block. One end of the prism rod is connected to the prism. The other end of the prism rod is connected to the pressure block. The pressure block is fixed on the bottom plate at a position directly above the intermediate gear. This design not only has high measurement accuracy and high work efficiency, but also has low cost.

Description

Technical Field

[0001] The present invention relates to the field of track detection technology, and in particular to a railway line center detection vehicle, which is mainly suitable for improving measurement accuracy, improving work efficiency and reducing costs. Background Art

[0002] Since the traditional ballasted track measurement operation is to place the prism rod in the center of the rail for measurement, the placement position is estimated by the staff, with large errors, and the prism group is also carried by the staff, which is laborious; at the same time, the prism bracket is not easy to land on the ballast, so the placement speed is slow, and the staff often bends over, the labor intensity is high and it is easy to get tired, so the overall operation efficiency is low. At the same time, the track fine-tuning requires the use of a fine-tuning trolley, which is expensive and has high rental fees. In addition, the rapid development of railways has led to a large demand for fine-tuning trolleys, so the detection cost is high. Summary of the invention

[0003] The purpose of the present invention is to overcome the defects and problems of low measurement accuracy, low working efficiency and high cost in the prior art, and to provide a railway line center inspection vehicle with high measurement accuracy, high working efficiency and low cost.

[0004] To achieve the above objectives, the technical solution of the present invention is: a railway line center detection vehicle, including a traveling trolley, a track gauge measuring ruler and a prism measuring device;

[0005] The walking trolley comprises a frame and a push rod connected to each other, a nylon wheel is arranged at the bottom of one end of the frame, the nylon wheel is arranged on the left rail, and a steel groove wheel is arranged at the bottom of the other end of the frame, the steel groove wheel is clamped on the right rail;

[0006] The track gauge ruler comprises a base plate, a No. 1 rack and a No. 2 rack. An intermediate gear is arranged at the exact center of the base plate. A No. 1 mounting groove and a No. 2 mounting groove are respectively arranged at the parts of the base plate located on both sides of the intermediate gear. The No. 1 rack is arranged in the No. 1 mounting groove. The No. 1 rack is meshed with the intermediate gear. A mounting column is arranged at one end of the No. 1 rack. A No. 1 spring is mounted on the mounting column. The No. 1 spring is fixed in the No. 1 mounting groove by a spring pressure block. The other end of the No. 1 rack is connected to an electrically insulating bearing through an electrically insulating bearing seat. A scale is arranged on the No. 1 rack. The No. 2 rack is arranged in the No. 2 mounting groove, the No. 2 rack is meshed with the intermediate gear, one end of the No. 2 rack is provided with a mounting column, the mounting column is provided with a No. 1 spring, the No. 1 spring is fixed in the No. 2 mounting groove through a spring pressure block, the other end of the No. 2 rack is connected with an electrically insulating bearing through an electrically insulating bearing seat, a pointer 1 is arranged on the No. 2 rack, the electrically insulating bearings of the No. 1 rack and the No. 2 rack are respectively in contact with the inner side surfaces of the left rail and the right rail, the bottom plate, the No. 1 rack and the No. 2 rack are all provided with a support frame, and the support frame is connected to the frame;

[0007] The prism measuring device comprises a prism, a prism rod and a pressing block, one end of the prism rod is connected to the prism, the other end of the prism rod is connected to the pressing block, and the pressing block is fixed on the bottom plate at a position directly above the middle gear.

[0008] The frame is a T-shaped structure, and the frame includes a crossbeam and a longitudinal beam. A nylon wheel is arranged at the bottom of one end of the crossbeam, and the other end of the crossbeam is vertically connected to the longitudinal beam. The longitudinal beam is located directly above the right rail, and steel groove wheels are arranged at the bottom of both ends of the longitudinal beam. The push rod is connected to the crossbeam.

[0009] The walking trolley also includes a brake device, which includes a brake handle, a brake lever and a brake shoe. One end of the brake lever is connected to a brake pin, and the other end of the brake lever is connected to the brake handle through a brake line. The brake handle is connected to a hand push rod. The brake lever is hinged to a brake lever base, and the brake lever base is connected to the top of a brake wheel cover plate. The bottom of the brake wheel cover plate is connected to a vehicle frame. The bottom of the brake wheel cover plate is connected to a wheel bracket. The brake pin passes through the brake wheel cover plate and the wheel bracket in sequence and is connected to the brake shoe. The brake shoe is located directly above the steel groove wheel, and the two ends of the steel groove wheel are respectively connected to the two sides of the wheel bracket. A brake guide pin is provided on the brake shoe, and the brake guide pin passes through the wheel bracket and the brake wheel cover plate in sequence and then extends out. A No. 2 spring is provided on the brake guide pin at a position between the brake shoe and the wheel bracket.

[0010] The support frame includes a sliding block and a mounting plate, the sliding block is connected to the mounting plate, the mounting plate is connected to the frame, the sliding block is a hollow structure, the sliding block is mounted on the bottom plate, the No. 1 rack and the No. 2 rack, the inner top surface of the sliding block is provided with an upper ball, the upper ball cooperates with the slide grooves on the upper end surfaces of the bottom plate, the No. 1 rack and the No. 2 rack, the inner bottom surface of the sliding block is provided with a lower ball, the lower ball cooperates with the slide grooves on the lower end surfaces of the bottom plate, the No. 1 rack and the No. 2 rack, and the two inner side surfaces of the sliding block are provided with roller needles that contact the two side surfaces of the bottom plate, the No. 1 rack and the No. 2 rack.

[0011] The sliding block includes a base and a rack cover plate, the base is a U-shaped structure, the inner bottom surface of the base is provided with a lower ball, the two inner side surfaces of the base are provided with needle rollers, the rack cover plate is connected to the top of the base, the bottom surface of the rack cover plate is provided with an upper ball, the mounting plate is an L-shaped structure, the horizontal plate of the mounting plate is provided with a fixing hole connected to the frame, and the vertical plate of the mounting plate is connected to the base.

[0012] The prism measuring device also includes a universal ball head and a universal ball support. A mounting through hole is provided in the middle of the universal ball support. The universal ball support is connected to the top of the pressure block. A conical hole coaxial with the mounting through hole is provided on the top of the pressure block. The universal ball head includes a rod body and a universal ball. The rod body is connected to the prism rod. The universal ball is located in the mounting through hole, and the bottom of the universal ball is located in the conical hole. An adjustment threaded hole communicating with the mounting through hole is provided on the side of the universal ball support. A butterfly bolt is installed in the adjustment threaded hole, and the butterfly bolt rests on the universal ball.

[0013] A cover plate is connected to the top of the universal ball bearing, and the cover plate is sleeved on the rod body. The cover plate includes a symmetrically arranged cover plate No. 1 and a cover plate No. 2. A semicircular groove is formed on the opposite side of the cover plate No. 1 and the cover plate No. 2.

[0014] The frame is provided with an overheight detector, which includes a gearbox support plate, a gearbox, a balance block, a dial and a pointer 2. The bottom of the gearbox support plate is connected to the frame, the gearbox is arranged on the back of the gearbox support plate, the balance block is arranged on the back of the gearbox, and the dial is arranged on the front of the gearbox support plate. The gearbox is provided with a first connecting shaft, a second connecting shaft and a third connecting shaft. One end of the first connecting shaft passes through the gearbox and is connected to the balance block, and the other end of the first connecting shaft is connected to the gearbox. A first gear is mounted on the outer wall of the first connecting shaft, and both ends of the second connecting shaft are connected to the gearbox. A second gear and a third gear are mounted on the outer wall of the second connecting shaft, and the second gear is meshed with the first gear. One end of the third connecting shaft passes through the gearbox and is connected to the pointer 2. The other end of the third connecting shaft is connected to the gearbox, and a fourth gear meshed with the third gear is mounted on the outer wall of the third connecting shaft.

[0015] The balancing block is in the shape of a double kidney, and includes a left kidney plate, a right kidney plate and a connecting plate. The left and right sides of the connecting plate are respectively connected to the left kidney plate and the right kidney plate. The connecting plate is connected to the first connecting axis. Horizontal bubbles are arranged on the left kidney plate and the right kidney plate.

[0016] The dial includes a dial cover and a dial, one end of the dial cover is inserted on the gearbox support plate, and the other end of the dial cover is provided with a transparent protective cover, and the dial is connected to the inner wall of the dial cover, and threaded holes are provided on the left and right sides of the gearbox support plate, and ball-shaped positioning screws and adjusting bolts are sequentially provided in the threaded holes, one end of the ball-shaped positioning screw is connected to the adjusting bolt, and an annular groove is provided on the outer wall of the dial cover along the circumferential direction, and the other end of the ball-shaped positioning screw is located in the annular groove.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. In a railway line center detection vehicle of the present invention, when measuring the track gauge, two electrically insulating bearings are respectively against the inner sides of the left and right rails. When the track gauge changes, the rack becomes longer or shorter through the intermediate gear under the action of the spring, and the bottom plate also slides left and right at the same time. Then the scale and the pointer are directly read, thereby realizing continuous linear measurement of the track gauge, which not only improves work efficiency but also improves measurement accuracy. While measuring the track gauge, the prism is always in the center of the left and right rails, thus solving the problem of prism centering. Then the prism rod is manually adjusted to center the bubble. The prism rod is kept in a vertical position under the action of the pressure block. At this time, the total station can be used to measure the spatial position of the line center, and finally the spatial position of the track is adjusted according to the measured value. Therefore, the present invention improves measurement accuracy, work efficiency, and reduces costs.

[0019] 2. In a railway line center inspection vehicle of the present invention, a nylon wheel is arranged at the bottom of one end of the crossbeam, and the other end of the crossbeam is vertically connected to the longitudinal beam. The longitudinal beam is located directly above the right rail, and steel groove wheels are arranged at the bottom of both ends of the longitudinal beam. The frame of the above structure not only solves the problem of wheel suspension, but also solves the insulation problem of the left and right rails. When the trolley moves, the brake handle is pressed, and the brake handle controls the movement of the brake lever through the brake line, and the brake lever drives the brake pin to move upward, thereby separating the brake shoe from the steel groove wheel. When the trolley needs to stop for measurement, the brake handle is released. At this time, under the action of the spring, the brake shoe is reset to fit the steel groove wheel. The above design not only has a good braking effect, but also is easy to operate. Therefore, the present invention has good stability, good safety, high reliability, and is easy to operate.

[0020] 3. In a railway line center inspection vehicle of the present invention, the support frame includes a sliding block and a mounting plate, the sliding block includes a base and a rack cover plate, the base is a U-shaped structure, the inner bottom surface of the base is provided with a lower ball, the two inner side surfaces of the base are provided with needle rollers, the rack cover plate is connected to the top of the base, the bottom surface of the rack cover plate is provided with an upper ball, the mounting plate is an L-shaped structure, the horizontal plate of the mounting plate is provided with a fixing hole connected to the frame, and the vertical plate of the mounting plate is connected to the base. The support frame of the above structure not only enables the gauge ruler to slide reliably left and right, improves the working reliability of the gauge ruler, but also reduces the difficulty of disassembling and assembling the gauge ruler. Therefore, the present invention has high reliability and is easy to install and disassemble.

[0021] 4. In a railway line center detection vehicle of the present invention, the prism measuring device includes a pressing block, a universal ball head and a universal ball support. On the one hand, the prism rod can be conveniently and quickly assembled on the vehicle frame and the prism is ensured to be centered. On the other hand, under the action of the universal ball head, the universal ball support and the base, the prism rod can be manually adjusted to center the bubble and ensure that the prism rod remains in a vertical position, thereby improving the measurement accuracy; the top of the universal ball support is connected with a cover plate to protect the universal ball head. Therefore, the present invention improves the measurement accuracy, reduces the difficulty of installation and disassembly, and has high reliability.

[0022] 5. In a railway line center inspection vehicle of the present invention, when inspecting a curved track, the trolley is placed on the track, and the track surface elevations of the left and right tracks are detected by a superelevation detection prism. Then the dial is manually rotated to complete the calibration operation, and then the trolley is pushed to inspect the curved track. During the movement of the trolley, if the track surface superelevation of the left and right tracks changes, the balance block will always remain horizontal under the action of gravity, and the dial will rotate to the left or right with the vehicle body, thereby driving the first connecting shaft to rotate, the first gear drives the second gear to rotate, the second connecting shaft drives the third gear to rotate, and then the fourth gear meshing with the third gear rotates, and the third connecting shaft drives the pointer to rotate in the dial to read the measured value. Thus, the measurement operation is completed, the walking trolley can drive the super-elevation detector to move, and can realize continuous detection of the curved section track, improve the detection continuity, and can be calibrated during measurement, so that the measurement result is more accurate and the accuracy of the measurement result is improved; when adjustment and calibration are required, only the dial cover needs to be rotated, because the pointer is connected to the connecting rod on the support plate, in the process of rotating the dial cover, the ball positioning screw plays a role of limiting, the pointer pointing is fixed, and the dial on the dial cover is rotated, so that the zero scale of the dial coincides with the direction indicated by the pointer, and then the whole calibration process is completed, the whole calibration process is relatively simple, the time required is short, the labor of calibration adjustment is reduced, and the efficiency of the whole detection process is also improved. Therefore, the present invention has high measurement accuracy, simple operation and high work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention.

[0024] Figure 2 It is a structural schematic diagram of the walking trolley in the present invention.

[0025] Figure 3 It is a three-dimensional structural schematic diagram of the brake device in the present invention.

[0026] Figure 4 It is a front view of a brake device in the present invention.

[0027] Figure 5It is a structural schematic diagram of the track gauge measuring ruler in the present invention.

[0028] Figure 6 yes Figure 5 Schematic diagram of the assembly structure of rack No. 1, rack No. 2 and base plate.

[0029] Figure 7 yes Figure 5 Schematic diagram of the structure of the midsole plate.

[0030] Figure 8 yes Figure 5 Schematic diagram of the structure of the middle support frame.

[0031] Fig. 9 It is a schematic diagram of the installation structure of the prism rod in the present invention.

[0032] Fig.10 yes Fig. 9 Schematic diagram of the structure of the medium pressure block.

[0033] Fig.11 yes Fig. 9 Schematic diagram of the structure of the universal ball head.

[0034] Fig.12 yes Fig. 9 Schematic diagram of the structure of the universal ball bearing.

[0035] Fig.13 It is a structural schematic diagram of the cover plate in the present invention.

[0036] Fig.14 It is a structural schematic diagram of the ultra-high detector in the present invention.

[0037] Fig.15 Fig.14 Schematic diagram of the internal structure of the gearbox.

[0038] Fig.16 yes Fig.15 Side view of.

[0039] Fig.17 yes Fig.14 Schematic diagram of the assembly structure of the center dial and the gearbox support plate.

[0040] Fig.18 yes Fig.17 Top view of the .

[0041] Fig.19 yes Fig.17 Side view of.

[0042] Fig. 20 yes Fig.17 Schematic diagram of the structure of the middle dial cover.

[0043] Fig.21 yes Fig.14 Schematic diagram of the structure of the balancing block.

[0044] In the figure: walking trolley 1, frame 11, cross beam 111, longitudinal beam 112, hand push rod 12, nylon wheel 13, steel groove wheel 14, brake device 15, brake handle 150, brake lever 151, brake shoe 152, brake pin 153, brake line 154, brake lever base 155, brake wheel cover 156, wheel bracket 157, brake guide pin 158, No. 2 spring 159, track gauge ruler 2, bottom plate 21. No. 1 mounting slot 211, No. 2 mounting slot 212, slide slot 213, No. 1 rack 22, mounting column 221, electrically insulating bearing seat 222, scale 223, No. 2 rack 23, pointer 1 231, intermediate gear 24, No. 1 spring 25, spring pressure block 26, electrically insulating bearing 27, support frame 28, base 281, rack cover 282, mounting plate 283, lower ball 284, needle 285, ultra-high detector 3, gearbox support plate 31, threaded hole 311, ball positioning screw 312, adjusting bolt 313, gearbox 32, first connecting shaft 321, second connecting shaft 322, third connecting shaft 323, first gear 324, second gear 325, third gear 326, fourth gear 327, balance block 33, left kidney plate 331, right kidney plate 332, connecting plate 333, level bubble 334, dial 34, Dial cover 341, dial 342, transparent protective cover 343, annular groove 344, pointer 2 35, prism measuring device 4, prism 41, prism rod 42, pressure block 43, tapered hole 431, universal ball head 44, rod body 441, universal ball 442, universal ball support 45, mounting through hole 451, adjusting threaded hole 452, cover plate No. 1 46, cover plate No. 2 47, semicircular groove 48, left rail 5, right rail 6. DETAILED DESCRIPTION

[0045] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0046] See also Figures 1 to 21 , a railway line center inspection vehicle, comprising a traveling vehicle 1, a track gauge measuring ruler 2 and a prism measuring device 4;

[0047] The walking trolley 1 includes a frame 11 and a push rod 12 connected to each other. A nylon wheel 13 is provided at the bottom of one end of the frame 11, and the nylon wheel 13 is provided on the left rail 5. A steel groove wheel 14 is provided at the bottom of the other end of the frame 11, and the steel groove wheel 14 is clamped on the right rail 6.

[0048] The track gauge ruler 2 includes a base plate 21, a No. 1 rack 22 and a No. 2 rack 23. An intermediate gear 24 is arranged at the center of the base plate 21. A No. 1 mounting groove 211 and a No. 2 mounting groove 212 are respectively provided at the positions on both sides of the intermediate gear 24 on the base plate 21. The No. 1 rack 22 is arranged in the No. 1 mounting groove 211. The No. 1 rack 22 is meshed with the intermediate gear 24. A mounting column 221 is arranged at one end of the No. 1 rack 22. A No. 1 spring 25 is mounted on the mounting column 221. The No. 1 spring 25 is fixed in the No. 1 mounting groove 211 through a spring pressure block 26. The other end of the No. 1 rack 22 is connected to an electrically insulating bearing 27 through an electrically insulating bearing seat 222. A scale 223 is arranged on the No. 1 rack 22. The No. 2 rack 23 is arranged in the No. 2 mounting groove 212, the No. 2 rack 23 is meshed with the intermediate gear 24, one end of the No. 2 rack 23 is provided with a mounting column 221, the mounting column 221 is provided with a No. 1 spring 25, the No. 1 spring 25 is fixed in the No. 2 mounting groove 212 through a spring pressure block 26, the other end of the No. 2 rack 23 is connected with an electrically insulating bearing 27 through an electrically insulating bearing seat 222, the No. 2 rack 23 is provided with a pointer 1 231, the electrically insulating bearings 27 of the No. 1 rack 22 and the No. 2 rack 23 are in contact with the inner side surfaces of the left rail 5 and the right rail 6 respectively, the bottom plate 21, the No. 1 rack 22, and the No. 2 rack 23 are all provided with a support frame 28, and the support frame 28 is connected to the frame 11;

[0049] The prism measuring device 4 includes a prism 41, a prism rod 42 and a pressing block 43. One end of the prism rod 42 is connected to the prism 41, and the other end of the prism rod 42 is connected to the pressing block 43. The pressing block 43 is fixed to the bottom plate 21 at a position directly above the intermediate gear 24.

[0050] The frame 11 is a T-shaped structure, and the frame 11 includes a crossbeam 111 and a longitudinal beam 112. A nylon wheel 13 is provided at the bottom of one end of the crossbeam 111, and the other end of the crossbeam 111 is vertically connected to the longitudinal beam 112. The longitudinal beam 112 is located directly above the right rail 6. Steel groove wheels 14 are provided at the bottom of both ends of the longitudinal beam 112, and the push rod 12 is connected to the crossbeam 111.

[0051] The walking trolley 1 also includes a brake device 15, which includes a brake handle 150, a brake lever 151 and a brake shoe 152. One end of the brake lever 151 is connected to a brake pin 153, and the other end of the brake lever 151 is connected to the brake handle 150 through a brake line 154. The brake handle 150 is connected to the hand push rod 12. The brake lever 151 is hinged to a brake lever base 155. The brake lever base 155 is connected to the top of a brake wheel cover 156. The bottom of the brake wheel cover 156 is connected to the frame 11. The brake wheel cover 15 6 is connected to a wheel bracket 157 at the bottom, the brake pin 153 passes through the brake wheel cover 156 and the wheel bracket 157 in sequence and is connected to the brake shoe 152, the brake shoe 152 is located just above the steel groove wheel 14, and the two ends of the steel groove wheel 14 are respectively connected to the two sides of the wheel bracket 157, and a brake guide pin 158 is provided on the brake shoe 152, the brake guide pin 158 passes through the wheel bracket 157 and the brake wheel cover 156 in sequence and then extends out, and a No. 2 spring 159 is set on the brake guide pin 158 between the brake shoe 152 and the wheel bracket 157.

[0052] The support frame 28 includes a sliding block and a mounting plate 283, the sliding block is connected to the mounting plate 283, the mounting plate 283 is connected to the frame 11, the sliding block is a hollow structure, the sliding block is mounted on the bottom plate 21, the first rack 22, and the second rack 23, the inner top surface of the sliding block is provided with an upper ball, the upper ball cooperates with the slide groove 213 on the upper end surface of the bottom plate 21, the first rack 22, and the second rack 23, the inner bottom surface of the sliding block is provided with a lower ball 284, the lower ball 284 cooperates with the slide groove 213 on the lower end surface of the bottom plate 21, the first rack 22, and the second rack 23, and the two inner side surfaces of the sliding block are provided with roller needles 285 that contact the two side surfaces of the bottom plate 21, the first rack 22, and the second rack 23.

[0053] The sliding block includes a base 281 and a rack cover plate 282. The base 281 is a U-shaped structure. The inner bottom surface of the base 281 is provided with a lower ball 284, and the two inner side surfaces of the base 281 are provided with needle rollers 285. The rack cover plate 282 is connected to the top of the base 281, and the bottom surface of the rack cover plate 282 is provided with an upper ball. The mounting plate 283 is an L-shaped structure. The horizontal plate of the mounting plate 283 is provided with a fixing hole connected to the frame 11, and the vertical plate of the mounting plate 283 is connected to the base 281.

[0054] The prism measuring device 4 also includes a universal ball head 44 and a universal ball support 45. A mounting through hole 451 is provided in the middle of the universal ball support 45. The universal ball support 45 is connected to the top of the pressure block 43. A conical hole 431 coaxial with the mounting through hole 451 is provided on the top of the pressure block 43. The universal ball head 44 includes a rod body 441 and a universal ball 442. The rod body 441 is connected to the prism rod 42. The universal ball 442 is located in the mounting through hole 451, and the bottom of the universal ball 442 is located in the conical hole 431. An adjusting threaded hole 452 communicating with the mounting through hole 451 is provided on the side of the universal ball support 45. A butterfly bolt is installed in the adjusting threaded hole 452, and the butterfly bolt rests on the universal ball 442.

[0055] A cover plate is connected to the top of the universal ball support 45, and the cover plate is sleeved on the rod body 441. The cover plate includes a symmetrically arranged cover plate No. 1 46 and a cover plate No. 2 47. A semicircular groove 48 is formed on the opposite side of the cover plate No. 1 46 and the cover plate No. 2 47.

[0056] The frame 11 is provided with an overheight detector 3, which includes a gearbox support plate 31, a gearbox 32, a balance block 33, a dial 34 and a pointer 2 35. The bottom of the gearbox support plate 31 is connected to the frame 11, the gearbox 32 is arranged on the back of the gearbox support plate 31, the balance block 33 is arranged on the back of the gearbox 32, and the dial 34 is arranged on the front of the gearbox support plate 31. The gearbox 32 is provided with a first connecting shaft 321, a second connecting shaft 322 and a third connecting shaft 323 inside. One end of the first connecting shaft 321 passes through the gearbox 32 and is connected to the balance block 33. The other end of the first connecting shaft 321 is connected to the gearbox 32, and a first gear 324 is mounted on the outer wall of the first connecting shaft 321. Both ends of the second connecting shaft 322 are connected to the gearbox 32. A second gear 325 and a third gear 326 are mounted on the outer wall of the second connecting shaft 322. The second gear 325 is meshed with the first gear 324. One end of the third connecting shaft 323 passes through the gearbox 32 and is connected to the pointer 2 35. The other end of the third connecting shaft 323 is connected to the gearbox 32. A fourth gear 327 meshed with the third gear 326 is mounted on the outer wall of the third connecting shaft 323.

[0057] The balance block 33 is in the shape of a double kidney, and includes a left kidney plate 331, a right kidney plate 332 and a connecting plate 333. The left and right sides of the connecting plate 333 are respectively connected to the left kidney plate 331 and the right kidney plate 332. The connecting plate 333 is connected to the first connecting shaft 321. Horizontal bubbles 334 are provided on the left kidney plate 331 and the right kidney plate 332.

[0058] The dial 34 includes a dial cover 341 and a scale plate 342. One end of the dial cover 341 is inserted into the gearbox support plate 31, and the other end of the dial cover 341 is provided with a transparent protective cover 343. The scale plate 342 is connected to the inner wall of the dial cover 341. Threaded holes 311 are provided on the left and right sides of the gearbox support plate 31. Ball-shaped positioning screws 312 and adjusting bolts 313 are provided in the threaded holes 311 in sequence. One end of the ball-shaped positioning screw 312 is connected to the adjusting bolt 313. An annular groove 344 is provided on the outer wall of the dial cover 341 along the circumferential direction, and the other end of the ball-shaped positioning screw 312 is located in the annular groove 344.

[0059] The principle of the present invention is described as follows:

[0060] In order to ensure the stability of the vehicle body and the authenticity of the collected data, and to avoid the problem of the wheels being suspended when the vehicle body passes through the triangular pit of the track, thereby affecting the leveling of the prism, the frame structure adopts a T-shaped frame. In order to ensure the rigidity of the vehicle body, the T-joint is strengthened with bevel steel supports, and the frame material is 5 mm thick No. 8 channel steel with surface spray-coated for rust prevention. If the vehicle body is too heavy, the vehicle body can be lightweight by cutting circular holes, or 3 mm thick steel plates can be used, which are rolled according to the outer dimensions of No. 8 channel steel and then spray-coated for rust prevention. In order to facilitate packaging and transportation, the frame is disconnected about 1.2 meters away from the nylon wheel side, and 4 M8 bolts are used to connect the disconnected parts, and the T-joints and bevel steel supports are connected by welding.

[0061] The nylon wheels can prevent the left and right rails from being connected. The two steel groove wheel groups on the right side are directly stuck on the rails to walk, so as to prevent the inspection vehicle from moving left and right and falling off the track. The steel groove wheel group on the right front is equipped with a brake device. The brake wheel adopts a normally closed structure, that is, when the trolley is stopped, the brake shoe is pressed against the steel groove wheel under the action of the left and right spring forces, so as to achieve the braking effect; when the observation is completed and it is necessary to move forward, pinch the brake handle and release the brake shoe to push forward. After reaching the observation point, release the brake handle to carry out the measurement operation. The hand push rod is welded into a T-shape with a 1mm thick and 22mm diameter stainless steel pipe. Each steel groove wheel group is mainly composed of a steel groove wheel, two F626ZZ flange bearings, axles with threads at both ends, and a roller frame; the steel groove wheel is made of 45# round steel with a length of 90mm and a diameter of 80mm, which is turned into a groove wheel with an inner diameter of 40mm and an outer diameter of 80mm. The contact surface between the wheel and the rail is 70mm long, and the wheel rim is turned into a 3mm inclined surface, and the thinnest part of the wheel rim is 7mm thick. The nylon wheel set consists of a nylon wheel, two F626ZZ flange bearings, an axle and a roller frame. The nylon wheel is lathe-processed into a 90mm long and 40mm diameter smooth wheel. All wheel axes are opened with a 12mm diameter hole for easy insertion of the axle. In order to reduce various resistances and wheel limitations during walking, both sides of the wheel are lathe-processed into a stepped sunken installation of F626ZZ flange bearings, and then supporting roller frames are installed on both sides. The roller frame is made of 4mm thick hot-rolled steel plate, which is laser cut and then bent by a CNC folding machine. The roller frame is welded to the car body, and the surface of the steel groove wheel is blackened.

[0062] Because the operation point cannot guarantee whether there is a line open, there cannot be any connection between the left and right rails of the opened railway. Once the left and right rails are connected, the control center will show that there is a train parked, which affects the normal operation of the opened railway. The gauge measurement is supported on the left and right rails through the racks, so its insulation problem must also be solved. At the same time, the movement and durability of the components must also be solved. Through comparison, it is finally decided to use special electric insulation bearings on the rail contact surface to achieve the insulation between the left and right rails. The above two locations can insulate 5000 volts after testing, which can fully ensure the safety of construction operations. The grooved steel wheel on the right side of the frame is clamped on the rail, so the reference edge is set on the inside of the right rail. Since the gauge is measured by measuring the distance between the inner sides of the left and right rails, two electric insulation bearings that are always supported on the inner side of the rails can be used to keep the insulation of the left and right rails while measuring the distance. The electric insulation bearings are fixed at both ends of the two racks, and the gear is installed in the center of the bottom plate. The two racks are symmetrically distributed in the mounting grooves on both sides of the gear. When the track gauge changes during the travel of the trolley, the rack is lengthened or shortened at the same time through the gear under the action of the spring force at the rear end of the rack. Since the reference edge is on the right rail, the bottom plate will move left and right at the same time as the rack length changes. The movement value is half of the total elongation or total shortening value minus the standard track gauge. Because the actual track gauge change is small, the distance measuring ruler sets the distance measuring telescopic stroke to ±30 mm, that is, the effective measuring range is between 1405 and 1465. In this way, when the inspection vehicle travels at any position on the track, it can read the scale position indicated on the rack instantly. When used on wide or narrow rails, it can be used by simply increasing or decreasing the rack length accordingly. Among the four aluminum alloy support frames, the middle two are used for bolting the bottom plate to the frame, and the side two are used for bolting the rack to the frame. Since the track gauge ruler moves left and right constantly during operation, in order to reduce the power loss of the spring, aluminum alloy materials are used as much as possible and hollowed out to make it lightweight. In order to reduce friction resistance and limit, all sliding surfaces use steel balls or rollers to replace sliding friction with rolling friction.

[0063] Fix the pressing block just above the middle gear of the gauge measuring ruler bottom plate. Since the measuring rack will apply a pair of equal and opposite forces through the middle gear under the action of the spring, it will cause the racks on both sides to expand and contract at the same time, thus ensuring that the prism is always in the center of the left and right tracks while measuring the gauge, thus solving the prism centering problem. Then manually adjust the prism rod to center the bubble, and the prism rod will maintain a vertical position under the friction brake of the universal support ball joint. At this time, the total station can be used to measure the spatial position of the line center, and then adjust the spatial position of the track according to the measured value. Since the measurement position is at the center of the line, the bottom of the prism rod coincides with the track surface in the normal section, so the measured elevation data is directly used. When measuring the track surface height in the superelevation section, the prism height is its own length plus or minus half of the measured superelevation value. For example, if the left side is superelevated, the elevation of the low track surface is half of the measured elevation value minus the superelevation value, and the elevation of the high track surface is half of the measured elevation value plus the superelevation value. Because the rotation center of the universal ball bearing is 20 mm above the rail surface, its centering error is 0 when on a straight section. When on a curved section, the cotangent formula is used to calculate that the angle value corresponding to the superelevation limit value 150 / 1505 is 5.692°. Then, according to the tangent formula, tan5.692°=centering error / 20, the centering error under the superelevation limit state is calculated to be 1.993 mm. According to the current design speed and curve radius data of most railways, it can be seen from the superelevation calculation formula h=7.6Vmax2 / R that the superelevation values ​​of most railways are within 50 mm. Therefore, the centering error caused in the curved section is 0.664 mm.

[0064] The dial in the ultra-high detector is an aluminum plate with a diameter of 100 mm and a thickness of 1 mm. For easy reading, a full-circle digital mark is used for forward and reverse rotation (i.e. 360 degrees for forward rotation and 360 degrees for reverse rotation). The dial cover is fixed to the support plate by two transverse bolts clamping the annular groove. The dial is bonded to the dial cover by super glue, so that the dial can rotate 360 ​​degrees with the dial cover. The balance block is cut into a double kidney shape with a 10 mm thick hot-rolled steel plate by laser wire, and the surface of the steel plate is blackened. In order to make the balance block accurately level when reading, a level bubble is installed on the balance block. In order to reduce weight while ensuring strength, the support plate is cut with a 16 mm thick 6061 aluminum plate and connected by M6 bolts. The gearbox adopts two-stage reduction, and the gear modulus is 0.5. In order to reduce working resistance and ensure good working condition, 606ZZ high-speed rolling bearings are installed at both ends of each connecting shaft of the gearbox, with a total of 6. The high-speed rolling bearings are installed on the gearbox support plate through interference fit, and all aluminum plates are connected by M6 bolts.

[0065] The working principle of the superelevation detector is: the superelevation value of the railway track is generally between 0 and 150 mm, corresponding to a horizontal distance of 1505 mm (standard track gauge 1435 + rail width 70). When the detection vehicle passes through a curved section, the lifting of the outer rail will cause the vehicle body to rotate laterally by an angle. From the tangent formula tana = superelevation value / rail center distance 1505, it can be seen that the calculated angle value is very small, so the reaction is not sensitive; if the rotation angle is directly indicated by the deadweight of the hanging hammer, if you want to know the actual superelevation value, you need to calculate it according to the formula based on the rotation angle value, which is time-consuming, labor-intensive and very troublesome. In order to directly use the standard 360-degree dial to display the superelevation value at 1:1 (each degree of rotation of the pointer is equal to one millimeter in the distance direction, that is, 1 mm of superelevation), then the left and right balance blocks and gearboxes must be used to amplify the value. First, a simulation calculation is performed. A straight line of 1505 mm in length is drawn. Then, a straight line of 1 degree in length is drawn along one end of the straight line. Then, the width of the opening is marked as 26.27 mm. Finally, the calculator is used to verify that tan1° = superelevation value / 1505. The superelevation value is also 26.27 mm. It can be seen that when the vehicle body rotates 1 degree, the corresponding superelevation value is 26.27 mm. Based on this, a two-stage gearbox is designed, and the gear ratios of the two stages are 20. :100 and 20:105.08. Considering the power loss and the convenience of gear processing, the final acceleration ratio is 1:26.5, corresponding to the number of teeth of 20:100 and 20:106; when the car passes through the curved section, the car body rotates left and right while the balance block always remains horizontal, so that the dial is driven by the rotation of the car body to rotate clockwise or counterclockwise with the car body, and the pointer will also rotate with the acceleration through the gearbox, so that the gearbox converts the angle value into a millimeter value to achieve the purpose of displaying the actual superelevation value. Since this superelevation detector is designed according to the standard track gauge of 1435 mm, when using wide or narrow tracks, the acceleration ratio needs to be recalculated and re-matched, and the calculation principle is the same. Because the superelevation detector can be disassembled, it should be calibrated before each use. The calibration method is to use the prism group on the nylon wheel to first measure the elevation of the left track surface of the same mileage, and then rotate the car body 180° to measure the elevation of the right track surface. The elevation difference between the two track surfaces is the superelevation value. The detector dial can be rotated 360 degrees at will, so you only need to keep the balance block horizontal and rotate the dial to the superelevation value indicated by the pointer. In order to adapt to the convention and facilitate reading, try to make the 0 scale of the pointer point directly downward or upward during adjustment. If the difference is too large, just turn the balance block first to make the pointer point directly upward or downward, then loosen the bolts on the adjustment balance block, rotate the balance block to make it horizontal, and then tighten the bolts.Because the superelevation detector is too sensitive, a slight movement will be amplified 26.27 times through the gearbox. Considering the friction resistance inside the gearbox, the large windward surface of the balance block, and the vibration during walking, it may cause the balance block to self-balance reset error and cause inaccurate display values. Therefore, pay special attention to whether the horizontal bubble on the balance block is centered every time you read. If it is not centered, turn the balance block manually, and you can read accurately when the bubble is centered. Because the dial is a two-way 360-degree display, the reading should be read in the direction of the pointer rotation (generally the left superelevation pointer rotates counterclockwise, and the right superelevation pointer rotates clockwise). Because the ballasted track has more tamping times, the superelevation detector can be used to verify the superelevation in the first few times, and the prism is used to measure in the fine adjustment stage. The superelevation of the ballastless track is always measured with a prism in the rough adjustment stage. The superelevation measurement prism socket is directly above the middle of the nylon wheel.

[0066] In the initial adjustment of the track, in order to directly display the superelevation value for comparison with the theoretical value, this inspection vehicle adopts a gravity-balanced mechanical pointer display. When the track inspection vehicle passes through the outer track of the curved section, the track will be raised, causing the car body to rotate an angle. Because the superelevation value is small relative to the track gauge direction, the car body rotation angle is not large. In order to display the superelevation value 1:1 through the balance block and the gearbox, the gearbox is finally used to amplify the angle value to achieve that each rotation of the pointer is equal to one millimeter in the height direction, so that the angle value caused by the superelevation is converted into the millimeter value in the length direction. Because the circumference is 360 degrees, the theoretical measurement range of this trolley is -360 to 360 mm, and the superelevation value of the railway design is generally within 150 mm, so it can fully meet the actual requirements. When the trolley passes through the curved section, the car body rotates left and right while the balance block is always horizontal, thereby driving the pointer on the car body to rotate clockwise or counterclockwise to achieve the purpose of displaying the actual superelevation value; when the track enters the fine adjustment stage, it is only necessary to insert a prism group above the left nylon wheel for absolute elevation measurement to measure the superelevation rail elevation.

[0067] Embodiment 1:

[0068] See also Figures 1 to 21A railway line center detection vehicle includes a traveling trolley 1, a track gauge measuring ruler 2 and a prism measuring device 4; the traveling trolley 1 includes a frame 11 and a push rod 12 connected to each other, a nylon wheel 13 is provided at the bottom of one end of the frame 11, and the nylon wheel 13 is provided on the left rail 5, and a steel groove wheel 14 is provided at the bottom of the other end of the frame 11, and the steel groove wheel 14 is clamped on the right rail 6; the track gauge measuring ruler 2 includes a bottom plate 21, a first rack 22 and a second rack 23, and an intermediate gear 24 is provided at the center of the bottom plate 21, The base plate 21 is provided with a first mounting groove 211 and a second mounting groove 212 at the two sides of the intermediate gear 24. The first rack 22 is arranged in the first mounting groove 211. The first rack 22 is meshed with the intermediate gear 24. A mounting column 221 is provided at one end of the first rack 22. A first spring 25 is mounted on the mounting column 221. The first spring 25 is fixed in the first mounting groove 211 through a spring pressure block 26. The other end of the first rack 22 is connected to an electrically insulating bearing 27 through an electrically insulating bearing seat 222. The rack 22 is provided with a scale 223, the second rack 23 is arranged in the second mounting groove 212, the second rack 23 is meshed with the intermediate gear 24, one end of the second rack 23 is provided with a mounting column 221, the mounting column 221 is provided with a first spring 25, the first spring 25 is fixed in the second mounting groove 212 through a spring pressure block 26, the other end of the second rack 23 is connected to an electrically insulating bearing 27 through an electrically insulating bearing seat 222, and a pointer 231 is provided on the second rack 23. The electrically insulating bearing 27 of 3 is in contact with the inner side surfaces of the left rail 5 and the right rail 6 respectively. The base plate 21, the first rack 22 and the second rack 23 are all equipped with a support frame 28, and the support frame 28 is connected to the frame 11; the prism measuring device 4 includes a prism 41, a prism rod 42 (telescopic prism rod) and a pressure block 43, one end of the prism rod 42 is connected to the prism 41, and the other end of the prism rod 42 is connected to the pressure block 43, and the pressure block 43 is fixed to the base plate 21 at a position directly above the intermediate gear 24.

[0069] Embodiment 2:

[0070] The basic content is the same as that of Example 1, except that:

[0071] See also Figures 1 to 21The frame 11 is a T-shaped structure, and the frame 11 includes a crossbeam 111 and a longitudinal beam 112. A nylon wheel 13 is provided at the bottom of one end of the crossbeam 111, and the other end of the crossbeam 111 is vertically connected to the longitudinal beam 112. The longitudinal beam 112 is located directly above the right rail 6, and steel groove wheels 14 are provided at the bottom of both ends of the longitudinal beam 112. The hand push rod 12 is connected to the crossbeam 111; the walking trolley 1 also includes a brake device 15, and the brake device 15 includes a brake handle 150, a brake lever 151 and a brake shoe 152. One end of the brake lever 151 is connected to the brake pin 153, and the other end of the brake lever 151 is connected to the brake handle 150 through a brake line 154. The brake handle 150 is connected to the hand push rod 12, and the brake lever 151 is connected to the brake shoe 152. The brake lever base 155 is hinged, and the brake lever base 155 is connected to the top of the brake wheel cover 156. The bottom of the brake wheel cover 156 is connected to the frame 11. The bottom of the brake wheel cover 156 is connected to the wheel bracket 157. The brake pull pin 153 passes through the brake wheel cover 156 and the wheel bracket 157 in sequence and is connected to the brake shoe 152. The brake shoe 152 is located directly above the steel groove wheel 14, and the two ends of the steel groove wheel 14 are respectively connected to the two sides of the wheel bracket 157. A brake guide pin 158 is provided on the brake shoe 152. The brake guide pin 158 passes through the wheel bracket 157 and the brake wheel cover 156 in sequence and then extends out. The position of the brake guide pin 158 between the brake shoe 152 and the wheel bracket 157 is provided with a No. 2 spring 159.

[0072] Embodiment 3:

[0073] The basic content is the same as that of Example 1, except that:

[0074] See also Figures 1 to 21The support frame 28 includes a sliding block and a mounting plate 283, the sliding block is connected to the mounting plate 283, the mounting plate 283 is connected to the frame 11, the sliding block is a hollow structure, the sliding block is mounted on the bottom plate 21, the first rack 22, and the second rack 23, the inner top surface of the sliding block is provided with an upper ball, the upper ball cooperates with the bottom plate 21, the first rack 22, and the second rack 23 The upper end surface of the slide groove 213, the inner bottom surface of the sliding block is provided with a lower ball 284, the lower ball 284 cooperates with the bottom plate 21, the first rack 22, and the second rack 23 The lower end surface of the slide groove 213, the two inner sides of the sliding block The surface is provided with a needle roller 285 that contacts the side surfaces of the bottom plate 21, the No. 1 rack 22, and the No. 2 rack 23; the sliding block includes a base 281 and a rack cover plate 282, the base 281 is a U-shaped structure, the inner bottom surface of the base 281 is provided with a lower ball 284, and the two inner side surfaces of the base 281 are provided with a needle roller 285, the rack cover plate 282 is connected to the top of the base 281, and the bottom surface of the rack cover plate 282 is provided with an upper ball, the mounting plate 283 is an L-shaped structure, the horizontal plate of the mounting plate 283 is provided with a fixing hole connected to the frame 11, and the vertical plate of the mounting plate 283 is connected to the base 281.

[0075] Embodiment 4:

[0076] The basic content is the same as that of Example 1, except that:

[0077] See also Figures 1 to 21 The prism measuring device 4 further comprises a universal ball head 44 and a universal ball support 45. A mounting through hole 451 is provided in the middle of the universal ball support 45. The universal ball support 45 is connected to the top of the pressing block 43. A conical hole 431 coaxial with the mounting through hole 451 is provided on the top of the pressing block 43. The universal ball head 44 comprises a rod body 441 and a universal ball 442. The rod body 441 is connected to the prism rod 42. The universal ball 442 is located in the mounting through hole 451, and the universal ball 44 2 is located in the conical hole 431, and the side of the universal ball support 45 is provided with an adjustment threaded hole 452 which is communicated with the mounting through hole 451, and a butterfly bolt is installed in the adjustment threaded hole 452, and the butterfly bolt is against the universal ball 442; the top of the universal ball support 45 is connected with a cover plate, and the cover plate is sleeved on the rod body 441, and the cover plate includes a symmetrically arranged No. 1 cover plate 46 and a No. 2 cover plate 47, and a semicircular groove 48 is provided on the side opposite to the No. 1 cover plate 46 and the No. 2 cover plate 47.

[0078] Embodiment 5:

[0079] The basic content is the same as that of Example 1, except that:

[0080] See also Figures 1 to 21The frame 11 is provided with an ultra-high detector 3, and the ultra-high detector 3 includes a gearbox support plate 31, a gearbox 32, a balance block 33, a dial 34 and a pointer 35. The bottom of the gearbox support plate 31 is connected to the frame 11, the gearbox 32 is arranged on the back of the gearbox support plate 31, the balance block 33 is arranged on the back of the gearbox 32, and the dial 34 is arranged on the front of the gearbox support plate 31. The gearbox 32 is provided with a first connecting shaft 321, a second connecting shaft 322 and a third connecting shaft 323. The first connecting shaft 321 is provided with a first connecting shaft 321, a second connecting shaft 322 and a third connecting shaft 323. One end of the first connecting shaft 32 passes through the gearbox 32 and is connected to the balance block 33. The other end of the first connecting shaft 321 is connected to the gearbox 32. A first gear 324 is mounted on the outer wall of the first connecting shaft 321. Both ends of the second connecting shaft 322 are connected to the gearbox 32. A second gear 325 and a third gear 326 are mounted on the outer wall of the second connecting shaft 322. The second gear 325 is meshed with the first gear 324. One end of the third connecting shaft 323 passes through the gearbox 32 and is connected to the pointer 2 35. The other end of the third connecting shaft 323 is connected to the gearbox 32 is connected, and a fourth gear 327 meshing with the third gear 326 is mounted on the outer wall of the third connecting shaft 323; the balancing block 33 is in the shape of a double kidney, and the balancing block 33 includes a left kidney plate 331, a right kidney plate 332 and a connecting plate 333, and the left and right sides of the connecting plate 333 are respectively connected to the left kidney plate 331 and the right kidney plate 332, and the connecting plate 333 is connected to the first connecting shaft 321, and the left kidney plate 331 and the right kidney plate 332 are both provided with a horizontal bubble 334; the dial 34 includes a dial cover 341 and a dial 342, and the dial cover 341 One end of the dial cover 341 is inserted into the gearbox support plate 31, and the other end of the dial cover 341 is provided with a transparent protective cover 343. The dial 342 is connected to the inner wall of the dial cover 341. Threaded holes 311 are provided on the left and right sides of the gearbox support plate 31. Ball-shaped positioning screws 312 and adjusting bolts 313 are provided in sequence in the threaded holes 311. One end of the ball-shaped positioning screw 312 is connected to the adjusting bolt 313. An annular groove 344 is provided on the outer wall of the dial cover 341 along the circumferential direction, and the other end of the ball-shaped positioning screw 312 is located in the annular groove 344.

Claims

1. A railway line center inspection vehicle, characterized in that: It comprises a traveling trolley (1), a track gauge measuring ruler (2) and a prism measuring device (4); The walking trolley (1) comprises a frame (11) and a push rod (12) connected to each other, a nylon wheel (13) is arranged at the bottom of one end of the frame (11), and the nylon wheel (13) is arranged on the left steel rail (5), and a steel groove wheel (14) is arranged at the bottom of the other end of the frame (11), and the steel groove wheel (14) is clamped on the right steel rail (6); The track gauge measuring ruler (2) comprises a base plate (21), a first rack (22) and a second rack (23). An intermediate gear (24) is arranged at the center of the base plate (21). A first mounting groove (211) and a second mounting groove (212) are respectively provided at the positions on both sides of the intermediate gear (24) on the base plate (21). The first rack (22) is arranged in the first mounting groove (211). The first rack (22) is meshed with the intermediate gear (24). A mounting column (221) is arranged at one end of the first rack (22). A first spring (25) is sleeved on the mounting column (221). The first spring (25) is fixed in the first mounting groove (211) through a spring pressure block (26). The other end of the first rack (22) is connected to an electrically insulating bearing (27) through an electrically insulating bearing seat (222). A scale (223) is arranged on the first rack (22). The second rack (23) is arranged in the second installation groove (212), the second rack (23) is meshed with the intermediate gear (24), one end of the second rack (23) is provided with a mounting column (221), the mounting column (221) is provided with a first spring (25), the first spring (25) is fixed in the second installation groove (212) through a spring pressure block (26), and the other end of the second rack (23) is connected to the intermediate gear (24) through an electrically insulating bearing seat (222). ) is connected with an electric insulating bearing (27), a pointer 1 (231) is arranged on the second rack (23), the electric insulating bearings (27) of the first rack (22) and the second rack (23) are in contact with the inner side surfaces of the left rail (5) and the right rail (6) respectively, and a support frame (28) is mounted on the bottom plate (21), the first rack (22) and the second rack (23), and the support frame (28) is connected to the frame (11); The prism measuring device (4) comprises a prism (41), a prism rod (42) and a pressing block (43); one end of the prism rod (42) is connected to the prism (41); the other end of the prism rod (42) is connected to the pressing block (43); and the pressing block (43) is fixed to a portion of the bottom plate (21) directly above the intermediate gear (24).

2. A railway line center inspection vehicle according to claim 1, characterized in that: The frame (11) is a T-shaped structure, comprising a crossbeam (111) and a longitudinal beam (112), a nylon wheel (13) is arranged at the bottom of one end of the crossbeam (111), the other end of the crossbeam (111) is vertically connected to the longitudinal beam (112), the longitudinal beam (112) is located directly above the right steel rail (6), steel groove wheels (14) are arranged at the bottom of both ends of the longitudinal beam (112), and the push rod (12) is connected to the crossbeam (111).

3. The railway line center detection vehicle according to claim 1, characterized in that: The walking trolley (1) also includes a brake device (15), which includes a brake handle (150), a brake lever (151) and a brake shoe (152). One end of the brake lever (151) is connected to a brake pin (153), and the other end of the brake lever (151) is connected to the brake handle (150) through a brake line (154). The brake handle (150) is connected to a hand push rod (12). The brake lever (151) is hinged to a brake lever base (155). The brake lever base (155) is connected to the top of a brake wheel cover plate (156). The bottom of the brake wheel cover plate (156) is connected to the vehicle frame (11). The brake wheel cover plate (156) is connected to the vehicle frame (11). The bottom of the steel groove wheel (14) is connected to a wheel bracket (157), the brake pin (153) passes through the brake wheel cover plate (156) and the wheel bracket (157) in sequence and is connected to the brake shoe (152), the brake shoe (152) is located directly above the steel groove wheel (14), and the two ends of the steel groove wheel (14) are respectively connected to the two sides of the wheel bracket (157), and the brake guide pin (158) is provided on the brake shoe (152), and the brake guide pin (158) passes through the wheel bracket (157) and the brake wheel cover plate (156) in sequence and then extends out, and the brake guide pin (158) is provided with a second spring (159) at a position between the brake shoe (152) and the wheel bracket (157).

4. The railway line center detection vehicle according to claim 1, characterized in that: The support frame (28) comprises a sliding block and a mounting plate (283), wherein the sliding block is connected to the mounting plate (283), and the mounting plate (283) is connected to the vehicle frame (11). The sliding block is a hollow structure, and the sliding block is mounted on the bottom plate (21), the first rack (22), and the second rack (23). An upper ball is arranged on the inner top surface of the sliding block, and the upper ball matches with a slide groove (213) on the upper end surface of the bottom plate (21), the first rack (22), and the second rack (23). A lower ball (284) is arranged on the inner bottom surface of the sliding block, and the lower ball (284) matches with the slide groove (213) on the lower end surface of the bottom plate (21), the first rack (22), and the second rack (23). Two inner side surfaces of the sliding block are provided with roller needles (285) that contact the two side surfaces of the bottom plate (21), the first rack (22), and the second rack (23).

5. A railway line center inspection vehicle according to claim 4, characterized in that: The sliding block comprises a base (281) and a rack cover plate (282); the base (281) is a U-shaped structure; the inner bottom surface of the base (281) is provided with a lower ball bearing (284); both inner side surfaces of the base (281) are provided with roller needles (285); the rack cover plate (282) is connected to the top of the base (281); the bottom surface of the rack cover plate (282) is provided with an upper ball bearing; the mounting plate (283) is an L-shaped structure; a fixing hole connected to the vehicle frame (11) is provided on the horizontal plate of the mounting plate (283); and the vertical plate of the mounting plate (283) is connected to the base (281).

6. The railway line center detection vehicle according to claim 1, characterized in that: The prism measuring device (4) further comprises a universal ball head (44) and a universal ball support (45), wherein a mounting through hole (451) is provided in the middle of the universal ball support (45), the universal ball support (45) is connected to the top of the pressing block (43), and a conical hole (431) coaxial with the mounting through hole (451) is provided on the top of the pressing block (43), and the universal ball head (44) comprises a rod body (441) and a universal ball (442). ), the rod body (441) is connected to the prism rod (42), the universal ball (442) is located in the mounting through hole (451), and the bottom of the universal ball (442) is located in the conical hole (431), and the side of the universal ball support (45) is provided with an adjustment threaded hole (452) which is in communication with the mounting through hole (451), and a butterfly bolt is installed in the adjustment threaded hole (452), and the butterfly bolt is against the universal ball (442).

7. A railway line center inspection vehicle according to claim 6, characterized in that: A cover plate is connected to the top of the universal ball bearing (45), and the cover plate is sleeved on the rod body (441). The cover plate includes a first cover plate (46) and a second cover plate (47) that are symmetrically arranged. A semicircular groove (48) is formed on the side opposite to the first cover plate (46) and the second cover plate (47).

8. The railway line center inspection vehicle according to claim 1, characterized in that: The vehicle frame (11) is provided with an ultra-high detector (3), the ultra-high detector (3) comprising a gearbox support plate (31), a gearbox (32), a balance block (33), a dial (34) and a second pointer (35), the bottom of the gearbox support plate (31) is connected to the vehicle frame (11), the gearbox (32) is arranged on the back of the gearbox support plate (31), the balance block (33) is arranged on the back of the gearbox (32), the dial (34) is arranged on the front of the gearbox support plate (31), and a first connecting shaft (321), a second connecting shaft (322) and a third connecting shaft (323) are arranged inside the gearbox (32), one end of the first connecting shaft (321) passes through the gearbox (32) and is connected to the balance block (33) The other end of the first connecting shaft (321) is connected to the gearbox (32), a first gear (324) is mounted on the outer wall of the first connecting shaft (321), both ends of the second connecting shaft (322) are connected to the gearbox (32), a second gear (325) and a third gear (326) are mounted on the outer wall of the second connecting shaft (322), the second gear (325) is meshed with the first gear (324), one end of the third connecting shaft (323) passes through the gearbox (32) and is connected to the second pointer (35), the other end of the third connecting shaft (323) is connected to the gearbox (32), and a fourth gear (327) meshed with the third gear (326) is mounted on the outer wall of the third connecting shaft (323).

9. A railway line center inspection vehicle according to claim 8, characterized in that: The balancing block (33) is in the shape of a double kidney. The balancing block (33) comprises a left kidney plate (331), a right kidney plate (332) and a connecting plate (333). The left and right sides of the connecting plate (333) are respectively connected to the left kidney plate (331) and the right kidney plate (332). The connecting plate (333) is connected to the first connecting shaft (321). Horizontal bubbles (334) are provided on the left kidney plate (331) and the right kidney plate (332).

10. The railway line center inspection vehicle according to claim 8, characterized in that: The dial (34) comprises a dial cover (341) and a dial (342); one end of the dial cover (341) is inserted into the gearbox support plate (31); the other end of the dial cover (341) is provided with a transparent protective cover (343); the dial (342) is connected to the inner wall of the dial cover (341); threaded holes (311) are provided on both the left and right sides of the gearbox support plate (31); a ball-shaped positioning screw (312) and an adjusting bolt (313) are provided in the threaded holes (311) in sequence; one end of the ball-shaped positioning screw (312) is connected to the adjusting bolt (313); an annular groove (344) is provided on the outer wall of the dial cover (341) along the circumferential direction; the other end of the ball-shaped positioning screw (312) is located in the annular groove (344).

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