A camera fixing device for monorail track inspection

Abstract

This utility model discloses a camera fixing device for monorail track inspection, including a movable base, guide rails, and a mounting frame. The guide rails are symmetrically and parallelly fixedly installed on both sides of the bottom of the movable base. A groove is formed at the bottom of the guide rail, and sliders are slidably installed on both sides inside the groove. A lead screw is rotatably installed laterally inside the groove. A threaded hole matching the lead screw is formed through the slider, and the lead screw passes through the threaded hole to form a threaded transmission pair. A bracket for clamping the mounting frame is fixedly installed at the bottom of the slider. The two sides of the mounting frame are inserted into the bracket and locked with fasteners. A damper is fixedly installed in the center of the bottom of the slider. This utility model achieves high-precision lateral adjustment of the mounting frame through the threaded transmission pair of the lead screw and slider, and effectively reduces vibration through a combined damping system of damper and shock-absorbing springs, thereby solving the problems of poor installation compatibility, unstable movement, and blurry images in existing equipment.

Description

Technical Field

[0001] This utility model relates to the field of track inspection equipment technology, and in particular to a camera fixing device for monorail track inspection. Background Technology

[0002] Monorails, as a highly efficient material transport equipment, are widely used in material transport in complex terrains. The track, as the foundation for the monorail's operation, directly affects the reliability of the transport system. Traditional track inspections rely on manual visual inspection or offline sampling, which suffers from low efficiency, high missed inspection rate, and high labor intensity. With the development of machine vision technology, automated inspection equipment based on industrial cameras has gradually become popular. Its core lies in the stability, adjustment flexibility, and environmental adaptability of the camera fixing device.

[0003] Currently, camera mounting devices on the market mainly suffer from the following technical defects:

[0004] Because the models of inspection cameras are different and their mounting holes are also different, the mounting holes are often mismatched with the camera holes, making it impossible to install smoothly. In this case, it is often necessary to replace the mounting bracket, which makes the installation work very inconvenient and has poor applicability. Secondly, the monorail is subjected to heavy vehicles for a long time, and the surface is prone to defects such as unevenness and weld protrusion. The vibration generated when the equipment moves will cause the camera to capture blurry images. Even with the camera's built-in image stabilization function, the shooting quality is still easily affected.

[0005] Therefore, how to provide a camera fixing device for monorail track inspection is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0006] One objective of this invention is to provide a camera fixing device for monorail track inspection. This invention can achieve high-precision lateral adjustment of the mounting frame through a screw and slider threaded transmission pair, and effectively reduce vibration through a combination of damper and shock-absorbing springs, thereby solving the problems of poor compatibility, unstable movement, and blurry images in existing equipment installations.

[0007] A camera fixing device for monorail track inspection according to an embodiment of the present utility model includes a movable base, a guide rail and a mounting bracket;

[0008] The movable seat is symmetrically and parallelly fixedly installed with guide rails on both sides of its bottom. The bottom of the guide rails is provided with a sliding groove. Slider blocks are slidably installed on both sides inside the sliding groove. A lead screw is rotatably installed in the sliding groove. A threaded hole matching the lead screw is opened through the slider. The lead screw passes through the threaded hole and forms a threaded transmission pair.

[0009] A bracket for holding the mounting frame is fixedly installed at the bottom of the slider. The two sides of the mounting frame are inserted into the bracket and locked by fasteners. A damper is fixedly installed in the center of the bottom of the slider. The movable end of the damper is fixedly connected to the top of the mounting frame. A shock-absorbing spring with its two ends abutting against the bottom of the slider and the top of the mounting frame is sleeved on the outside of the damper.

[0010] Furthermore, four sets of guide wheels are symmetrically arranged on both sides of the front of the inner wall of the movable seat. The wheel surfaces of the guide wheels are in rolling contact with the side of the monorail track. Drive wheels are symmetrically arranged on the top rear of both sides of the inner wall of the movable seat. The wheel surfaces of the drive wheels are in rolling contact with the upper surface of the monorail track.

[0011] Furthermore, drive motors are symmetrically arranged on both sides of the bottom rear of the inner wall of the movable seat, and transmission boxes are arranged on both sides of the outer wall of the movable seat. The transmission boxes are equipped with meshing drive gears and driven gears. The output shaft of the drive motor is connected to the drive gear, and the axle of the drive wheel is connected to the driven gear to form a gear transmission pair.

[0012] Furthermore, mounting holes are provided on both sides of the mounting bracket. The mounting holes are elongated holes extending in the horizontal direction, and the inner walls of the mounting holes are provided with anti-slip textures.

[0013] Furthermore, one end of the lead screw extends through the guide rail and is fixedly mounted with a handle, while the other end of the lead screw is rotatably connected to the inner wall of the slide groove through a bearing seat, and a deep groove ball bearing is provided in the bearing seat.

[0014] Furthermore, guide grooves are symmetrically provided on the inner walls of both sides of the slide groove, and guide bosses are provided on both sides of the slider corresponding to the guide groove positions, and the guide bosses and guide grooves form a sliding fit limiting structure.

[0015] Furthermore, the pre-compression of the damping spring is 5-10 mm, the damping coefficient of the damper is 80-1 N·s / m, and the maximum deformation of the damping spring does not exceed 30% of its free length.

[0016] The beneficial effects of this utility model are:

[0017] In this invention, the precise lateral adjustment of the mounting bracket is achieved through a screw and slider threaded transmission pair. By rotating the handle to drive the screw to rotate, the sliders on both sides move synchronously in opposite directions. At this time, the distance between the two sets of mounting brackets can be freely adjusted to meet the precise positioning requirements of different camera installations. After the camera is installed, the combined damping structure of the damper and shock-absorbing spring works synergistically to significantly reduce the vibration during equipment movement. The high-frequency vibration caused by the unevenness of the track surface is absorbed by the shock-absorbing spring, and the low-frequency large-amplitude vibration is consumed by the damper, effectively avoiding image blurring and loosening of internal camera components caused by vibration. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the overall structure of a camera fixing device for monorail track inspection proposed in this utility model;

[0020] Figure 2 This is a schematic diagram of the bottom structure of a camera fixing device for monorail track inspection proposed in this utility model;

[0021] Figure 3 This is a cross-sectional view of the guide rail of a camera fixing device for monorail track inspection proposed in this utility model;

[0022] Figure 4 This is a schematic diagram of the slider and bracket structure of a camera fixing device for monorail track inspection proposed in this utility model.

[0023] In the diagram: 1. Movable seat; 2. Guide wheel; 3. Drive motor; 4. Transmission box; 5. Drive wheel; 6. Guide rail; 7. Mounting bracket; 8. Mounting hole; 9. Slide groove; 10. Slider; 11. Handle; 12. Lead screw; 13. Threaded hole; 14. Bracket; 15. Damper; 16. Shock-absorbing spring. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0025] refer to Figures 1-4 As shown in the figure, this embodiment provides a camera fixing device for monorail track inspection, which is mainly used in monorail track inspection operations in coal mines, tunnels and other scenarios. It is used to fix inspection equipment such as industrial cameras and infrared thermal imagers to realize dynamic shooting and detection of defects such as cracks, loose bolts and wear on the track surface.

[0026] The equipment consists of three core components: a movable base 1, a guide rail 6, and a mounting frame 7. These components work together to achieve the equipment's movement and positioning, lateral adjustment, and shock absorption protection functions.

[0027] The mobile seat 1 is the main load-bearing structure of the equipment. It is made of Q235 steel plate and is in the shape of a "U". Its open end is fastened to the top of the monorail.

[0028] Combination Figure 1 and Figure 4The inner wall of the movable seat 1 is equipped with guide wheels 2, drive wheels 5 and drive motors 3 in the front, back, left and right directions, respectively, forming the mobile drive system of the equipment.

[0029] Four sets of guide wheels 2 are symmetrically arranged on both sides of the front of the inner wall of the movable seat 1. Each set of guide wheels 2 is fixedly connected to the inner wall of the movable seat 1 through an L-shaped bracket. The guide wheels 2 are made of polyurethane, with a wheel surface width of mm and a wheel diameter of 50mm. Their wheel surfaces make rolling contact with the two vertical surfaces of the monorail track, and their function is to limit the lateral displacement of the movable seat 1 and ensure that the equipment moves in a straight line along the track.

[0030] Secondly, drive wheels 5 are symmetrically arranged on the top rear sides of both sides of the inner wall of the movable seat 1. The drive wheels 5 are rubber wheels with anti-slip texture, and their wheel surfaces are in rolling contact with the upper surface of the monorail track. Drive motors 3 are symmetrically installed on both sides of the bottom rear sides of the inner wall of the movable seat 1. The output shaft of the drive motor 3 is connected to the axle of the drive wheels 5 through the transmission box 4.

[0031] The transmission box 4 is equipped with a gear transmission pair: the driving gear is keyed to the output shaft of the drive motor 3 (module 2, 15 teeth), and the driven gear is keyed to the shaft of the drive wheel 5 (transmission ratio 3:1), which can convert the high speed of the motor into the low speed and high torque output of the drive wheel. The drive motor 3 is powered by a control box located on the outer wall of the movable seat 1. The control box integrates a PLC controller, which can realize the forward and reverse rotation, speed adjustment and stop control of the equipment.

[0032] Combination Figure 1 and Figure 4 The bottom of the movable base 1 is symmetrically welded with guide rails 6. The guide rails 6 are made of aluminum alloy profiles with an "I" shaped cross section and a length consistent with the width of the movable base 1. A through-type slide groove 9 is provided at the bottom of the guide rail 6. A lateral adjustment mechanism is installed inside the slide groove 9 to adjust the lateral position of the mounting bracket 7 to adapt to different track widths or camera shooting angle requirements.

[0033] The slide groove 9 has a horizontally rotatable lead screw 12 installed inside. One end of the lead screw 12 extends through the end face of the guide rail 6 and is fixedly mounted with a handle 11. The other end is rotatably connected to the inner wall of the slide groove 9 through a bearing housing. A deep groove ball bearing is installed in the bearing housing to reduce the frictional resistance when the lead screw 12 rotates.

[0034] A slider 10 is slidably mounted on each side of the slide groove 9. Each slider 10 has a threaded hole 13 that matches the lead screw 12, and the lead screw 12 passes through the threaded hole 13 to form a threaded transmission pair. When the handle 11 is rotated, the lead screw 12 rotates, causing the sliders 10 on both sides to move synchronously in opposite directions along the slide groove 9, i.e., one slider moves to the left and the other to the right, thereby adjusting the distance between the two sliders 10.

[0035] Secondly, to prevent the slider 10 from rotating with the lead screw 12, guide grooves are symmetrically provided on the inner walls of both sides of the slide groove 9, and guide bosses are provided at corresponding positions on both sides of the slider 10. The guide bosses and the guide grooves form a sliding fit limiting structure to ensure that the slider 10 only moves along the axial direction of the lead screw 12.

[0036] Combination Figure 1 and Figure 4 The mounting bracket 7 is the direct support component of the camera. It is made of 304 stainless steel plate and its two sides are inserted into the bracket 14 at the bottom of the slider 10. The bracket 14 is a U-shaped slot and is welded to the bottom of the slider 10. After the mounting bracket 7 is inserted into the bracket 14, it is locked by internal hex bolts (not shown). The bolts pass through the round holes on the side wall of the bracket 14 and are fixed to the mounting holes 8 on both sides of the mounting bracket 7.

[0037] The mounting bracket 7 has mounting holes 8 through both sides. The mounting holes 8 are elongated holes extending horizontally, with anti-slip textures on the inner wall, which can be adapted to the horizontal mounting position of brackets 14 of different thicknesses or fine-tuning cameras.

[0038] A damper 15 is fixedly mounted at the center of the bottom of the slider 10. The movable end of the damper 15 is fixedly connected to the top of the mounting bracket 7 by bolts. A shock-absorbing spring 16 is sleeved on the outside of the damper 15. The upper end of the shock-absorbing spring 16 abuts against the bottom of the slider 10, and the lower end abuts against the top of the mounting bracket 7. The pre-compression is 8mm, and the maximum deformation does not exceed 24mm.

[0039] When the equipment moves along the track, the unevenness of the track surface will cause the mounting frame 7 to vibrate. At this time, the damping spring 16 absorbs the vibration energy through elastic deformation, and the damper 15 consumes the energy through the flow of internal hydraulic oil. The two work together to effectively reduce the vibration amplitude of the camera and ensure the stability of the captured image.

[0040] Working principle: First, the movable seat 1 is fastened to the top of the monorail, ensuring that the guide wheel 2 is in contact with the side of the rail and the drive wheel 5 is in contact with the upper surface of the rail. Then, the drive motor 3 is started through the control box, and the drive wheel 5 rotates to move the equipment along the rail to the inspection start position. According to the camera's shooting range requirements, the handle 11 at the end of the rotating guide rail 6 is rotated, and the lead screw 12 rotates to move the sliders 10 on both sides along the slide groove 9. The distance between the two sliders 10 is adjusted to a suitable position, thereby changing the lateral position of the mounting frame 7. The industrial camera is fixed to the bottom of the mounting frame 7 with bolts. The lateral position of the camera is finely adjusted through the mounting hole 8 to ensure that the center of the lens is aligned with the rail inspection area. The drive motor 3 is started, and the equipment moves at a constant speed of 0.5m / s along the rail. During the movement, the shock-absorbing spring 16 and the damper 15 effectively absorb the rail vibration. The camera captures the rail image in real time and transmits it to the background analysis system.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A camera fixing device for monorail track inspection, characterized in that, Includes a movable base (1), a guide rail (6), and a mounting bracket (7); The movable seat (1) has guide rails (6) fixedly installed symmetrically and parallel on both sides of its bottom. The guide rails (6) have a groove (9) at their bottom. Slider blocks (10) are slidably installed on both sides inside the groove (9). A lead screw (12) is rotatably installed inside the groove (9). A threaded hole (13) matching the lead screw (12) is opened through the slider (10). The lead screw (12) passes through the threaded hole (13) and forms a threaded transmission pair. The bottom of the slider (10) is fixedly mounted with a bracket (14) for clamping the mounting frame (7). The two sides of the mounting frame (7) are inserted into the bracket (14) and locked by fasteners. A damper (15) is fixedly mounted in the center of the bottom of the slider (10). The movable end of the damper (15) is fixedly connected to the top of the mounting frame (7). A shock-absorbing spring (16) with both ends abutting against the bottom of the slider (10) and the top of the mounting frame (7) is sleeved on the outside of the damper (15).

2. The camera fixing device for monorail track inspection according to claim 1, characterized in that, Four sets of guide wheels (2) are symmetrically arranged on both sides of the front of the inner wall of the movable seat (1). The wheel surface of the guide wheel (2) rolls in contact with the side of the monorail track. Drive wheels (5) are symmetrically arranged on the top rear of both sides of the inner wall of the movable seat (1). The wheel surface of the drive wheel (5) rolls in contact with the upper surface of the monorail track.

3. The camera fixing device for monorail track inspection according to claim 2, characterized in that, The inner wall of the movable seat (1) is symmetrically provided with drive motors (3) on both sides of the bottom rear side. The outer wall of the movable seat (1) is provided with transmission boxes (4) on both sides. The transmission boxes (4) are provided with meshing drive gears and driven gears. The output shaft of the drive motor (3) is connected to the drive gear. The axle of the drive wheel (5) is connected to the driven gear to form a gear transmission pair.

4. The camera fixing device for monorail track inspection according to claim 1, characterized in that, The mounting bracket (7) has mounting holes (8) through both sides. The mounting holes (8) are elongated holes extending in the horizontal direction, and the inner wall of the mounting holes (8) is provided with anti-slip texture.

5. A camera fixing device for monorail track inspection according to claim 1, characterized in that, One end of the lead screw (12) extends through the guide rail (6) and is fixedly installed with a handle (11). The other end of the lead screw (12) is rotatably connected to the inner wall of the slide groove (9) through a bearing seat, and a deep groove ball bearing is provided in the bearing seat.

6. A camera fixing device for monorail track inspection according to claim 1, characterized in that, The inner walls of the slide groove (9) are symmetrically provided with guide grooves, and the slider (10) is provided with guide bosses on both sides corresponding to the guide groove positions, and the guide bosses and guide grooves form a sliding fit limiting structure.

7. A camera fixing device for monorail track inspection according to claim 1, characterized in that, The pre-compression of the damping spring (16) is 5-10 mm, the damping coefficient of the damper (15) is 80-1 N·s / m, and the maximum deformation of the damping spring (16) does not exceed 30% of its free length.

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