A track inspection car

Abstract

The utility model discloses a track detection vehicle, including car body, main wheel, drive mechanism, pivot, auxiliary wheel and probe, the main wheel rotation is connected on the car body, the main wheel has the contact surface of abutting at track top wall and side wall, the fixed end of drive mechanism is connected on the car body, the movable end of drive mechanism is connected on the main wheel, the pivot rotation is connected on the car body, and the pivot is away from the one end of car body and extends to another track, the auxiliary wheel is connected on the pivot, and the auxiliary wheel has the contact surface of abutting at another track top wall and side wall, the probe is located on the car body, and the probe is towards track, and the utility model has the beneficial effect that: the main wheel and auxiliary wheel abut on two tracks respectively, improve the lateral contact length of detection vehicle and track, reduce the possibility of the deformation of main wheel and auxiliary wheel, improve the service life of main wheel and auxiliary wheel.

Description

Technical Field

[0001] This utility model relates to the field of track inspection, specifically to a track inspection vehicle. Background Technology

[0002] As the core load-bearing structure of rail transit, the condition of the track directly determines the safety, comfort, and operational efficiency of train operation. With the development of rail transit towards higher speeds and higher densities, the track is prone to problems such as geometric parameter deviations and structural defects under long-term loads and environmental factors. High-frequency, high-precision testing is needed to achieve early warning of potential hazards and precise maintenance.

[0003] Chinese utility model patent CN219467738U discloses a monorail inspection vehicle for track inspection, comprising a monorail, a U-shaped inspection vehicle bracket clamped to the upper end of the monorail, and track wheels for use with the monorail on both the front and rear sides of the upper end of the inspection vehicle bracket. Rotating rods are fixedly connected to the center of both ends of the track wheels, and the other ends of the rotating rods are rotatably connected to both ends of the inspection vehicle bracket. Transmission cavities and drive cavities are respectively opened inside the side walls of the inspection vehicle bracket, and transmission control mechanisms are installed inside the transmission cavities and drive cavities. Stabilizing blocks are fixedly connected to the bottom of both ends of the inspection vehicle bracket, and the top surface of the stabilizing blocks is... The inclined surface structure is designed for use with a single track. The front and rear ends of the stabilizing block are rotatably connected to stabilizing wheels for use with the single track. Control slots are provided at the lower ends of both side walls of the inspection vehicle bracket. Long strip-shaped supports are inserted into the control slots. A connecting support block is provided on the top of the support near the single track. A lifting mechanism for use with the support is provided at the top of the control slot. A translation mechanism is provided on the connecting support block. A movable connecting mechanism for use with the support is provided at the lower end of the connecting support block. A power supply battery is fixedly inserted into the top surface of the inspection vehicle bracket. An inspection probe is fixedly connected at the center of the top front of the inspection vehicle bracket.

[0004] The aforementioned technologies have the following drawbacks: the track wheel abuts against the top of the track, the stabilizing wheel abuts against the side wall of the track, the track width is relatively narrow, the force on the track wheel and the stabilizing wheel is relatively concentrated, and the track wheel and the stabilizing wheel are prone to deformation, which affects the use. Utility Model Content

[0005] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and propose a track inspection vehicle to solve the technical problems of concentrated stress on the inspection vehicle and easy deformation of the track wheels and stabilizing wheels in the prior art.

[0006] To achieve the above-mentioned technical objectives, the present invention provides a track inspection vehicle, including a vehicle body; The main wheel is rotatably connected to the vehicle body and has a contact surface that abuts against the top and side walls of the track. A drive mechanism, wherein the fixed end of the drive mechanism is connected to the vehicle body, and the movable end of the drive mechanism is connected to the main wheel; A pivot shaft is rotatably connected to the vehicle body, and one end of the pivot shaft away from the vehicle body extends to another track; A secondary wheel, connected to a rotating shaft, having a contact surface abutting against the top and side walls of another track; and, The probe is mounted on the vehicle body and faces the track.

[0007] In some embodiments, the drive mechanism includes a motor, a drive gear, and a driven gear. The motor is mounted on the vehicle body, the drive gear is connected to the output shaft of the motor, the driven gear is connected to the main wheel, and the drive gear meshes with the driven gear.

[0008] In some embodiments, the drive mechanism further includes a protective housing connected to the vehicle body, the protective housing being sleeved on the outside of the drive gear and the driven gear.

[0009] In some embodiments, the rotating shaft includes a first shaft, a second shaft, and a fixing component. The first shaft is rotatably connected to the vehicle body, the second shaft is slidably connected to the first shaft along the length direction of the first shaft, and the fixing component is used to fix the second shaft to a predetermined position on the first shaft.

[0010] In some embodiments, the fixing component includes a plug rod, a first shaft has a plug hole, and a second shaft has a plurality of slots spaced apart along the sliding direction of the second shaft, wherein the plug rod is slidably connected to the plug hole and any of the slots.

[0011] In some embodiments, the end of the insert near the slot is spherical.

[0012] In some embodiments, the fixing assembly further includes a spring, one end of which is connected to the insert rod and the other end of which is connected to the first shaft. The spring is in a stretched state, and the spring causes the insert rod to slide toward the slot.

[0013] In some embodiments, the inspection vehicle further includes a bearing, the bearing including an inner ring, rolling elements and an outer ring, the rolling elements being rotatably connected between the inner ring and the outer ring, the inner ring being connected to a rotating shaft, and the outer ring being connected to the vehicle body.

[0014] In some embodiments, the inspection vehicle further includes bolts, the vehicle body is provided with screw holes, the outer ring is provided with grooves, the bolts are threaded into the screw holes, and the bolts pass through the grooves.

[0015] In some embodiments, the inspection vehicle further includes a handle attached to a bolt.

[0016] Compared with the prior art, the beneficial effects of this utility model include: the main wheel and the auxiliary wheel abut against the two tracks respectively, which increases the lateral contact length between the detection vehicle and the track, reduces the possibility of deformation of the main wheel and the auxiliary wheel, and improves the service life of the main wheel and the auxiliary wheel. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the testing vehicle provided by this utility model; Figure 2 This utility model provides Figure 1 Enlarged view of the local structure at point A; Figure 3 This utility model provides Figure 1 Enlarged view of the local structure at point B; Figure 4 This utility model provides Figure 1 Enlarged view of the local structure at point C.

[0018] Explanation of reference numerals in the attached figures: 1. Vehicle body; 2. Main wheel; 3. Drive mechanism; 31. Motor; 32. Drive gear; 33. Driven gear; 34. Protective box; 4. Shaft; 41. First shaft; 42. Second shaft; 43. Fixing assembly; 431. Insert rod; 432. Insertion hole; 433. Slot; 434. Spring; 5. Secondary wheel; 6. Probe; 7. Bearing; 71. Inner ring; 72. Rolling element; 73. Outer ring; 8. Bolt; 81. Screw hole; 82. Groove; 83. Handle. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0020] This utility model provides a track inspection vehicle, the structure of which is as follows: Figure 1 - Figure 4 As shown, it includes a vehicle body 1, main wheels 2, drive mechanism 3, shaft 4, auxiliary wheels 5, and probe 6.

[0021] The main wheel 2 is rotatably connected to the vehicle body 1, and the main wheel 2 has a contact surface that abuts against the top wall and side wall of the track.

[0022] The fixed end of the drive mechanism 3 is connected to the vehicle body 1, and the movable end of the drive mechanism 3 is connected to the main wheel 2.

[0023] The rotating shaft 4 is rotatably connected to the vehicle body 1, and one end of the rotating shaft 4 away from the vehicle body 1 extends to another track.

[0024] The auxiliary wheel 5 is connected to the rotating shaft 4, and the auxiliary wheel 5 has a contact surface that abuts against the top wall and side wall of another track.

[0025] The probe 6 is mounted on the vehicle body 1 and faces the track.

[0026] In operation, both the main wheel 2 and the auxiliary wheel 5 employ a design that allows for simultaneous contact between the top and side walls. Each wheel performs two contact functions: the circumferential surface of the wheel abuts against the top wall of the track, bearing the vertical weight of the vehicle body 1; the wheel flange structure at the edge of the wheel abuts against the side wall of the track, providing lateral guiding force. When the vehicle body 1 moves, the vertical load is evenly transmitted to the top wall of the track through the circumferential surfaces of the main wheel 2 and the auxiliary wheel 5, while the lateral force is transmitted through the linear contact between the wheel flange and the side wall of the track. The main wheel 2 and the auxiliary wheel 5 are symmetrically arranged around the vehicle body 1, with each wheel forming a mirror image of the force applied to the double tracks. When the vehicle passes through a curve or when there is a deviation in the track, the forces acting between the wheel flanges and the side walls of the track on both sides create a balancing torque, preventing overload on one side of the wheel and further reducing the stress on each individual wheel.

[0027] In this invention, the main wheel 2 and the auxiliary wheel 5 abut against two tracks respectively, which increases the lateral contact length between the testing vehicle and the tracks, reduces the possibility of deformation of the main wheel 2 and the auxiliary wheel 5, and improves the service life of the main wheel 2 and the auxiliary wheel 5.

[0028] To move vehicle body 1, please refer to... Figure 2 In a preferred embodiment, the drive mechanism 3 includes a motor 31, a drive gear 32, and a driven gear 33. The motor 31 is mounted on the vehicle body 1, the drive gear 32 is connected to the output shaft of the motor 31, and the driven gear 33 is connected to the main wheel 2. The drive gear 32 and the driven gear 33 mesh with each other.

[0029] In operation, motor 31 is fixedly mounted on the vehicle body 1. After power is connected, the output shaft of motor 31 rotates, providing the initial power for the entire drive system. The driving gear 32 is rigidly connected to the output shaft of motor 31 and rotates synchronously with it. The driven gear 33 is fixedly mounted on the axle of the main wheel 2 and meshes with the driving gear 32. When the driving gear 32 rotates, the interaction force between its teeth drives the driven gear 33 to rotate. The rotation of the driven gear 33 directly drives the main wheel 2 to rotate synchronously. The static friction between the main wheel 2 and the top wall of the track converts the rotational motion of the main wheel 2 into the linear motion of the detection vehicle.

[0030] To reduce the possibility of damage to the driving gear 32 and driven gear 33, please refer to... Figure 2In a preferred embodiment, the drive mechanism 3 further includes a protective box 34, which is connected to the vehicle body 1 and is sleeved on the outside of the drive gear 32 and the driven gear 33.

[0031] During use, the track inspection vehicle mostly travels on outdoor tracks, where dust, gravel, rainwater, oil, and other impurities are likely to be present. If these impurities directly contact the gear meshing parts, it can lead to serious malfunctions. The connection between the protective box 34 and the axles of the vehicle body 1 and main wheel 2 is sealed with rubber sealing rings, which can prevent gravel and dust from the surrounding track from entering the box and avoid impurities getting stuck between the gear teeth, causing scratches on the tooth surface or meshing jams.

[0032] To accommodate tracks of different widths, please refer to [reference needed]. Figure 3 In a preferred embodiment, the rotating shaft 4 includes a first shaft 41, a second shaft 42, and a fixing component 43. The first shaft 41 is rotatably connected to the vehicle body 1, the second shaft 42 is slidably connected to the first shaft 41 along the length direction of the first shaft 41, and the fixing component 43 is used to fix the second shaft 42 to a predetermined position on the first shaft 41.

[0033] In use, the track system has multiple track gauge standards, and the traditional fixed-length rotating shaft 4 can only adapt to a single track gauge. The second shaft 42 slides along the length direction of the first shaft 41, and the total length of the rotating shaft 4 can be adjusted according to the actual track gauge. The fixing component 43 can lock the second shaft 42 in a predetermined position after adjustment, ensuring the stability of the length of the rotating shaft 4 and meeting the detection requirements of tracks with different gauges.

[0034] To fix the second shaft 42 to the predetermined position on the first shaft 41, please refer to... Figure 3 In a preferred embodiment, the fixing component 43 includes a plug rod 431, the first shaft 41 is provided with a plug hole 432, and the second shaft 42 is provided with a plurality of slots 433 spaced apart along the sliding direction of the second shaft 42. The plug rod 431 is slidably connected to the plug hole 432 and any slot 433.

[0035] In use, when the length of the rotating shaft 4 needs to be adjusted, the insertion rod 431 is pulled out from the insertion hole 432 and the current slot 433. At this time, the locking state of the first shaft 41 and the second shaft 42 is released, and the second shaft 42 can slide freely along the length direction of the first shaft 41. After the second shaft 42 slides to the predetermined position, the insertion hole 432 on the first shaft 41 aligns with a slot 433 on the second shaft 42. Since the slots 433 are spaced apart along the sliding direction of the second shaft 42, multiple length adjustments can be achieved by selecting different positions of the slots 433. The insertion rod 431 is pushed axially into the insertion hole 432, so that it simultaneously passes into the insertion hole 432 and the aligned slot 433. The interference fit between the insertion rod 431 and the insertion hole 432 and the slot 433 forms a mechanical lock. At this time, the insertion rod 431 restricts the axial sliding and circumferential rotation of the second shaft 42 relative to the first shaft 41, making the first shaft 41 and the second shaft 42 form a rigid whole.

[0036] To make it easier for the insert 431 to slide into the slot 433, please refer to... Figure 3 In a preferred embodiment, the end of the insert 431 near the slot 433 is spherical.

[0037] When in use, if there is a slight coaxial deviation between the insertion hole 432 and the slot 433 during adjustment, the traditional insertion rod 431 is easy to get stuck on the edge of the slot 433, and the position of the second shaft 42 needs to be repeatedly adjusted to be aligned; the spherical end can slide smoothly into the hole along the edge of the slot 433 thanks to the self-guiding characteristics of the arc surface.

[0038] To improve the stability of the insertion rod 431, please refer to... Figure 3 In a preferred embodiment, the fixing component 43 further includes a spring 434, one end of which is connected to the insertion rod 431 and the other end of which is connected to the first shaft 41. The spring 434 is in a stretched state, and the spring 434 causes the insertion rod 431 to slide towards the slot 433.

[0039] During use, the spring force of the spring 434 always pushes the insertion rod 431 deep into the slot 433, keeping the end of the insertion rod 431 pressed against the bottom of the slot 433. Even if the equipment vibrates during operation, it can counteract the upward loosening force caused by the vibration and prevent gaps from appearing between the insertion rod 431 and the slot 433.

[0040] To make the secondary wheel 5 rotate more smoothly, please refer to... Figure 4 In a preferred embodiment, the inspection vehicle further includes a bearing 7, which includes an inner ring 71, a rolling element 72, and an outer ring 73. The rolling element 72 is rotatably connected between the inner ring 71 and the outer ring 73. The inner ring 71 is connected to the rotating shaft 4, and the outer ring 73 is connected to the vehicle body 1.

[0041] When in use, if the rotating shaft 4 directly contacts and rotates with the vehicle body 1, a large area of ​​sliding friction will be generated between the two, requiring a large amount of power to overcome the frictional resistance. However, when the rolling element 72 of the bearing 7 rolls between the inner and outer rings 73, the coefficient of friction is only 0.005, which greatly reduces the frictional resistance, reduces the energy loss of the test vehicle's drive system, and improves the driving range.

[0042] To achieve a detachable connection between the auxiliary wheel 5 and the vehicle body 1, please refer to... Figure 4 In a preferred embodiment, the inspection vehicle further includes a bolt 8, the vehicle body 1 is provided with a screw hole 81, the outer ring 73 is provided with a groove 82, the bolt 8 is threaded into the screw hole 81, and the bolt 8 passes through the groove 82.

[0043] When bearing 7 needs to be replaced during use, the outer ring 73 can be removed simply by loosening bolt 8, without damaging the structure of the vehicle body 1 or bearing 7. Bolt 8 is reusable and has low cost.

[0044] For easier rotation of bolt 8, please refer to... Figure 4 In a preferred embodiment, the inspection vehicle further includes a handle 83, which is connected to a bolt 8.

[0045] When in use, the grip structure of the handle 83 provides sufficient force points for the hand, and the operator can tighten or loosen the bolt 8 simply by rotating the handle 83 without the need for additional tools.

[0046] To better understand this utility model, the following is combined with... Figure 1 - Figure 4 The working principle of a track inspection vehicle according to the present invention is described in detail below: Both the main wheel 2 and the auxiliary wheel 5 adopt a design of simultaneous contact between the top wall and side wall, with each wheel simultaneously achieving two contact functions: the circumferential surface of the wheel abuts against the top wall of the track, bearing the weight of the vehicle body 1 in the vertical direction; the wheel flange structure at the edge of the wheel abuts against the side wall of the track, providing lateral guiding force. When the vehicle body 1 is moving, the vertical load is evenly transmitted to the top wall of the track through the circumferential surfaces of the main wheel 2 and the auxiliary wheel 5, while the lateral force is transmitted through the linear contact between the wheel flange and the side wall of the track. The main wheel 2 and the auxiliary wheel 5 are symmetrically arranged through the vehicle body 1, with each wheel forming a mirror force state with the double tracks. When the inspection vehicle passes through a curved section or when there is a deviation in the track, the forces acting between the wheel flanges on both sides and the side wall of the track form a balancing torque, preventing overload on one side of the wheel and further reducing the stress on a single wheel.

[0047] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A track inspection vehicle, characterized in that, include: Vehicle body; The main wheel is rotatably connected to the vehicle body and has a contact surface that abuts against the top and side walls of the track. A drive mechanism, wherein the fixed end of the drive mechanism is connected to the vehicle body, and the movable end of the drive mechanism is connected to the main wheel; A pivot shaft is rotatably connected to the vehicle body, and one end of the pivot shaft away from the vehicle body extends to another track; A secondary wheel, connected to a rotating shaft, having a contact surface abutting against the top and side walls of another track; and, The probe is mounted on the vehicle body and faces the track.

2. The track inspection vehicle according to claim 1, characterized in that, The drive mechanism includes a motor, a drive gear, and a driven gear. The motor is mounted on the vehicle body, the drive gear is connected to the output shaft of the motor, and the driven gear is connected to the main wheel. The drive gear and the driven gear mesh with each other.

3. The track inspection vehicle according to claim 2, characterized in that, The drive mechanism also includes a protective box, which is connected to the vehicle body and is fitted onto the outside of the drive gear and the driven gear.

4. The track inspection vehicle according to claim 1, characterized in that, The rotating shaft includes a first shaft, a second shaft, and a fixing component. The first shaft is rotatably connected to the vehicle body, the second shaft is slidably connected to the first shaft along the length direction of the first shaft, and the fixing component is used to fix the second shaft to a predetermined position on the first shaft.

5. The track inspection vehicle according to claim 4, characterized in that, The fixing component includes a plug rod, a first shaft has a plug hole, and a second shaft has multiple slots spaced apart along the sliding direction of the second shaft. The plug rod is slidably connected to the plug hole and any of the slots.

6. The track inspection vehicle according to claim 5, characterized in that, The end of the insertion rod near the slot is spherical.

7. The track inspection vehicle according to claim 5, characterized in that, The fixing component also includes a spring, one end of which is connected to the insertion rod and the other end of which is connected to the first shaft. The spring is in a stretched state, and the spring causes the insertion rod to slide towards the slot.

8. The track inspection vehicle according to claim 1, characterized in that, The inspection vehicle also includes a bearing, which includes an inner ring, rolling elements, and an outer ring. The rolling elements are rotatably connected between the inner ring and the outer ring. The inner ring is connected to a rotating shaft, and the outer ring is connected to the vehicle body.

9. The track inspection vehicle according to claim 8, characterized in that, The inspection vehicle also includes bolts, the vehicle body is provided with screw holes, the outer ring is provided with grooves, the bolts are threaded into the screw holes, and the bolts pass through the grooves.

10. The track inspection vehicle according to claim 9, characterized in that, The inspection vehicle also includes a handle, which is connected to a bolt.

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