Bridge bottom inspection vehicle walking device

Abstract

The utility model provides a walking device of a bridge bottom inspection vehicle, which belongs to the technical field of bridge maintenance and comprises two groups of mounting racks, the mounting racks correspond to I-shaped steel sliding rails at the bottom of a bridge one by one, and the I-shaped steel sliding rails are provided with sliding spaces; two rows of rollers, racks, supporting structures and driving motors are arranged on each group of mounting frames; the two rows of rollers are rotationally arranged on the mounting frame; the rack is connected to the bottom of the I-shaped steel slide rail; the supporting structure is connected to one end of the mounting frame; a gear is rotationally arranged on the supporting structure and engaged with the rack. The driving motor is connected to the supporting structure; an output shaft of the driving motor is connected with the gear; through the arrangement, the two sets of mounting frames at the two ends of the inspection vehicle can slide synchronously, the situation that the two sets of mounting frames are asynchronous and slip is reduced, and when the inspection vehicle advances on a large slope, the inspection vehicle can run stably through cooperation of the gear and the rack, and the risk that the inspection vehicle slips is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge maintenance, and particularly relates to a traveling device for a bridge bottom inspection vehicle. Background Art

[0002] A bridge inspection vehicle is a movable inspection platform installed on a traffic bridge for inspection operations. During the bridge maintenance process, it provides an operation platform for bridge inspection and maintenance personnel. The bridge inspection vehicle can place bridge inspection equipment and maintenance tools. The bridge inspection vehicle is a special engineering vehicle for mobile inspection or maintenance operations. The bridge inspection vehicle can move its position at any time, facilitating bridge inspection and maintenance personnel to safely, quickly, and efficiently enter the operation position and carry out inspection operations.

[0003] There are two guide rails on the lower end face of the bridge. The two guide rails are respectively located on both sides of the lower end face of the bridge, and the guide rails are I-shaped steel beams. The traveling device of the gauge inspection vehicle includes two groups of wheel bodies and two driving motors. The two groups of wheel bodies correspond to the two guide rails respectively, and the two driving motors correspond to the two groups of wheel bodies one by one, that is, each driving motor drives a group of wheel bodies to rotate. Taking one group of wheel bodies as an example, each group of wheel bodies includes two traveling wheels. The two traveling wheels are respectively located on both sides of the I-shaped steel beam and are rotationally matched with the I-shaped steel beam; the driving motor is connected to one of the traveling wheels to drive the traveling wheel to rotate. Through the above settings, the bridge inspection vehicle can slide along the guide rail, thereby facilitating maintenance personnel to inspect and maintain the bridge.

[0004] In the above installation method, there is an installation error between the two groups of wheel bodies and the corresponding sliding rails, and since the bridge inspection vehicle spans the bridge body and has a large span, different synchronization and slipping will occur between the two groups of wheel bodies, and there is a great risk of slipping for traveling on a large slope. Summary of the Utility Model

[0005] An embodiment of the utility model provides a traveling device for a bridge bottom inspection vehicle, aiming to solve the technical problem of different synchronization and slipping between the two groups of wheel bodies in the prior art.

[0006] To achieve the above object, the technical solution adopted by the utility model is:

[0007] Provide a traveling device for a bridge bottom inspection vehicle, including two groups of mounting frames, which are respectively arranged at both ends of the inspection vehicle; the mounting frames correspond to the I-shaped steel guide rails at the bottom of the bridge one by one, and there is a sliding space on the I-shaped steel guide rail; each group of mounting frames is provided with:

[0008] Two rows of rollers, which are all rotatably arranged on the mounting frame; the two rows of rollers are respectively arranged on both sides of the I-shaped steel guide rail. The rollers are located in the sliding space and are rotationally matched with the I-shaped steel guide rail; the I-shaped steel guide rail can provide support for the rollers;

[0009] A rack, connected to the bottom of the I-beam slide rail; the rack is arranged along the length direction of the I-beam slide rail;

[0010] A support structure, connected to one end of the mounting frame; a gear is rotatably provided on the support structure, and the gear meshes with the rack;

[0011] A driving motor, connected to the support structure; the output shaft of the driving motor is connected to the gear to drive the gear to rotate.

[0012] In a possible implementation manner, a driving rod is connected to the output shaft of the driving motor, and a turntable is connected to the top of the driving rod.

[0013] In a possible implementation manner, two guide plates are connected to the other end of the mounting frame, and the two guide plates are respectively located on both sides of the I-beam slide rail; a guide wheel is rotatably provided on each guide plate, and the guide wheel contacts the side part of the I-beam slide rail to laterally limit the mounting frame.

[0014] In a possible implementation manner, the guide wheel includes:

[0015] A rotating shaft, connected to the guide plate; a bearing is provided on the rotating shaft, and the rotating shaft is fixedly fitted with the inner ring of the bearing;

[0016] A wheel body, fixedly fitted with the outer ring of the bearing; the wheel body can rotate relative to the rotating shaft.

[0017] In a possible implementation manner, the guide plate has a through hole for the rotating shaft to pass through, and the side wall of the guide plate has a threaded hole communicated with the through hole; a tightening bolt is provided in the threaded hole of the guide plate, and one end of the tightening bolt can abut against the outer peripheral wall of the rotating shaft.

[0018] In a possible implementation manner, the outer peripheral wall of the rotating shaft has an external thread, and the bottom end of the rotating shaft passes through the guide plate; nuts are provided at both the top and bottom positions of the guide plate with respect to the rotating shaft, and the rotating shaft is clamped to the guide plate through the cooperation of the two nuts.

[0019] In a possible implementation manner, drop prevention mechanisms are provided at both ends of the mounting frame, the drop prevention mechanisms are connected to the mounting frame, the drop prevention mechanisms have a support part located in the sliding space, and there is a gap between the support part and the bottom of the I-beam slide rail.

[0020] In a possible implementation manner, the drop prevention mechanism includes a C-shaped frame, and the C-shaped frame is connected to the mounting frame; the opening of the C-shaped frame is inserted and fitted with the bottom of the I-beam slide rail so that a part of the C-shaped frame is located in the sliding space.

[0021] In a possible implementation, there are two falling protection mechanisms at each end of the mounting frame, and the two falling protection mechanisms are respectively located on both sides of the I-beam slide rail.

[0022] In a possible implementation, the rack and the I-beam slide rail are connected by welding or bolts.

[0023] Compared with the prior art, the walking device of the bridge bottom inspection vehicle provided by the present utility model has both rows of roller wheels installed in the sliding space of the I-beam slide rail, and the roller wheels are rotationally matched with the upper surface of the bottom of the I-beam slide rail. On the one hand, the I-beam slide rail can provide support for the roller wheels, and on the other hand, it can reduce the friction between the I-beam slide rail and the roller wheels; after starting the drive motor, the drive motor can drive the gear to rotate, and then the mounting frame can slide along the length direction of the I-beam slide rail; through the cooperation of the gear and the rack, the two sets of mounting frames at both ends of the inspection vehicle can slide synchronously, reducing the situation of non-synchronization and slipping of the two sets of mounting frames. When traveling on a large slope, through the cooperation of the gear and the rack, the inspection vehicle can also operate stably, reducing the risk of the inspection vehicle slipping. Description of the Drawings

[0024] Figure 1 It is a schematic diagram of a walking device of a bridge bottom inspection vehicle provided by an embodiment of the present utility model installed on an I-beam slide rail;

[0025] Figure 2 It is a schematic diagram of a walking device of a bridge bottom inspection vehicle provided by an embodiment of the present utility model;

[0026] Figure 3 It is a schematic diagram of a support structure part of a walking device of a bridge bottom inspection vehicle provided by an embodiment of the present utility model;

[0027] Figure 4 is Figure 3 an enlarged schematic diagram of part A in

[0028] Figure 5 It is a schematic diagram of a guide wheel part of a walking device of a bridge bottom inspection vehicle provided by an embodiment of the present utility model.

[0029] Description of the reference numerals: 1, mounting frame; 11, side plate; 12, cross plate; 13, screw rod; 14, sleeve; 15, guide plate; 16, fastening bolt; 2, I-beam slide rail; 21, sliding space; 3, roller wheel; 31, limit ring; 4, rack; 5, support structure; 6, drive motor; 61, drive rod; 62, turntable; 7, gear; 8, guide wheel; 81, rotating shaft; 82, wheel body; 83, bearing; 84, nut; 9, C-shaped frame. Detailed Embodiments

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer and more understandable, 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 the present utility model and are not used to limit the present utility model.

[0031] Please refer to Figures 1 to 5 , and now a walking device for a bridge girder bottom inspection vehicle provided by the present utility model will be described. The walking device for a bridge girder bottom inspection vehicle includes two sets of mounting frames 1, and the two sets of mounting frames 1 are respectively arranged at both ends of the inspection vehicle; the mounting frames 1 correspond to the I-beam rails 2 at the bottom of the bridge one by one, and the I-beam rails 2 have a sliding space 21; two rows of rollers 3, racks 4, support structures 5 and drive motors 6 are provided on each set of mounting frames 1; the two rows of rollers 3 are rotatably arranged on the mounting frames 1; the two rows of rollers 3 are respectively arranged on both sides of the I-beam rail 2, the rollers 3 are located in the sliding space 21 and are rotationally matched with the I-beam rail 2; the I-beam rail 2 can provide support for the rollers 3; the rack 4 is connected to the bottom of the I-beam rail 2; the rack 4 is arranged along the length direction of the I-beam rail 2; the support structure 5 is connected to one end of the mounting frame 1; a gear 7 is rotatably provided on the support structure 5, and the gear 7 meshes with the rack 4; the drive motor 6 is connected to the support structure 5; the output shaft of the drive motor 6 is connected to the gear 7 to drive the gear 7 to rotate. The rack 4 and the I-beam rail 2 are connected by welding or bolts.

[0032] For the walking device for a bridge girder bottom inspection vehicle provided by the present utility model, compared with the prior art, the two rows of rollers 3 are both installed in the sliding space 21 of the I-beam rail 2, and the rollers 3 are rotationally matched with the upper surface of the bottom of the I-beam rail 2. On the one hand, the I-beam rail 2 can provide support for the rollers 3, and on the other hand, the friction between the I-beam rail 2 and the rollers 3 can be reduced; after starting the drive motor 6, the drive motor 6 can drive the gear 7 to rotate, and then the mounting frame 1 can slide along the length direction of the I-beam rail 2; through the cooperation of the gear 7 and the rack 4, the two sets of mounting frames 1 at both ends of the inspection vehicle can slide synchronously, reducing the situation of non-synchronization and slipping of the two sets of mounting frames 1. When traveling on a large slope, through the cooperation of the gear 7 and the rack 4, the inspection vehicle can also run stably, reducing the risk of the inspection vehicle slipping.

[0033] Exemplarily, the mounting frame 1 includes two side plates 11 and a cross plate 12 connecting the two side plates 11, and the cross plate 12 can be welded to the side plates 11; threaded holes are provided on both side plates 11 and are aligned with each other, a screw rod 13 is provided between the threaded holes of the two side plates 11, and both ends of the screw rod 13 are threadedly matched with the threaded holes on the two side plates 11. A sleeve 14 is sleeved on the outer peripheral wall of the screw rod 13, and both ends of the sleeve 14 are in contact with the side walls of the two side plates 11.

[0034] In some embodiments, as Figures 1 to 5 shown, a drive rod 61 is connected to the output shaft of the drive motor 6, and a turntable 62 is connected to the top of the drive rod 61.

[0035] It should be noted that the diameter of the drive rod 61 is less than or equal to the diameter of the output shaft, the drive rod 61 is coaxially arranged with the output shaft, and the drive rod 61 can be welded to the output shaft. A sleeve is fixedly provided on the top of the turntable 62, and the sleeve is sleeved on the drive rod 61; a first positioning hole is provided on the outer peripheral wall of the drive rod 61, and a threaded hole aligned with the first positioning hole is provided on the outer peripheral wall of the sleeve. By screwing the bolt into the threaded hole of the sleeve, the threaded end of the bolt can be inserted into the first positioning hole, thereby fixing the circumferential positions of the sleeve and the drive rod 61; when the operator rotates the turntable 62, the gear 7 can be driven to rotate, and then the inspection vehicle can slide on the I-beam slide rail 2; through the above settings, the purpose of manual operation can be achieved.

[0036] In some embodiments, as Figures 1 to 5 shown, the other end of the mounting bracket 1 is connected with two guide plates 15, and the two guide plates 15 are respectively located on both sides of the I-beam slide rail 2; a guide wheel 8 is rotatably provided on each guide plate 15, and the guide wheel 8 contacts the side part of the I-beam slide rail 2 to laterally limit the mounting bracket 1.

[0037] It should be noted that by providing two guide wheels 8 on the mounting bracket 1 and the two guide wheels 8 are arranged oppositely, after the mounting bracket 1 is installed on the I-beam slide rail 2, the two guide wheels 8 respectively contact the two sides of the bottom of the I-beam slide rail 2, which can play a role in laterally limiting the mounting bracket.

[0038] Exemplarily, a limiting ring 31 is connected to each roller 3, and the limiting ring 31 contacts the side wall of the bottom of the I-beam slide rail 2, which can play a role in laterally limiting the position; the limiting ring 31 can laterally limit the mounting bracket 1, and the guide wheel 8 can also play a role in laterally limiting. Through the cooperation of the limiting ring 31 and the guide wheel 8, the stability of the mounting bracket 1 can be further improved.

[0039] In some embodiments, as Figures 1 to 5 shown, the guide wheel 8 includes a rotating shaft 81 and a wheel body 82; the rotating shaft 81 is connected to the guide plate 15; a bearing 83 is provided on the rotating shaft 81, and the rotating shaft 81 is fixedly matched with the inner ring of the bearing 83; the wheel body 82 is fixedly matched with the outer ring of the bearing 83; the wheel body 82 can rotate relative to the rotating shaft 81.

[0040] It should be noted that the rotating shaft 81 is fixed on the guide plate 15, and the outer peripheral wall of the wheel body 82 contacts the side wall of the I-beam slide rail 2; when the mounting bracket 1 slides along the length direction of the I-beam slide rail 2, the wheel body 82 rotates accordingly; through the above settings, during the normal movement of the mounting bracket 1, it can be ensured that the guide wheel 8 plays a role in laterally limiting.

[0041] In some embodiments, as Figures 1 to 5 shown, the guide plate 15 has a through hole for the rotation shaft 81 to pass through, and the side wall of the guide plate 15 has a threaded hole communicating with the through hole; a tightening bolt 16 is provided in the threaded hole of the guide plate 15, and one end of the tightening bolt 16 can abut against the outer peripheral wall of the rotation shaft 81. The outer peripheral wall of the rotation shaft 81 has an external thread, and the bottom end of the rotation shaft 81 passes through the guide plate 15; nuts 84 are provided at both the top and bottom positions of the rotation shaft 81 with respect to the guide plate 15, and the rotation shaft 81 clamps the guide plate 15 through the cooperation of the two nuts 84.

[0042] It should be noted that the through hole on the guide plate 15 is a strip-shaped hole, and the diameter of the strip-shaped hole is greater than the diameter of the rotation shaft 81; after one end of the rotation shaft 81 passes through the guide plate 15, by rotating the tightening bolt 16, the threaded end of the tightening bolt 16 can be made to abut against the outer peripheral wall of the rotation shaft 81 to initially fix the position of the rotation shaft 81; then the upper and lower nuts 84 of the rotation shaft 81 are tightened to fix the rotation shaft 81 on the guide plate 15; through the above settings, on the one hand, it is convenient to insert the rotation shaft 81 into the strip-shaped hole of the guide plate 15, and on the other hand, it is convenient to fix the installation position of the rotation shaft 81.

[0043] In some embodiments, as Figures 1 to 5 shown, drop protection mechanisms are provided at both ends of the mounting frame 1. The drop protection mechanisms are connected to the mounting frame 1. The drop protection mechanisms have a support portion located in the sliding space 21, and there is a gap between the support portion and the bottom of the I-beam slide rail 2. There are two drop protection mechanisms at each end of the mounting frame 1, and the two drop protection mechanisms are respectively located on both sides of the I-beam slide rail 2. The drop protection mechanism includes a C-shaped frame 9, and the C-shaped frame 9 is connected to the mounting frame 1; the opening of the C-shaped frame 9 is inserted and matched with the bottom of the I-beam slide rail 2 so that a part of the C-shaped frame 9 is located in the sliding space 21.

[0044] It should be noted that the C-shaped frame 9 is fixed on the cross plate 12 of the mounting frame 1. After the C-shaped frame 9 is inserted and matched with the bottom of the I-beam slide rail 2, there is a gap between the C-shaped frame 9 and the bottom of the I-beam slide rail 2; through the above settings, when the roller 3 is damaged and the mounting frame 1 drops, the top of the C-shaped frame 9 can contact the upper surface of the bottom of the I-beam slide rail 2, thereby playing a role of temporary support and improving the overall safety performance of the device.

[0045] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A traveling device for an inspection vehicle at the bottom of a bridge beam, characterized in that, It includes two sets of mounting brackets, which are respectively arranged at both ends of the inspection vehicle; the mounting brackets correspond to the I-beam sliding rails at the bottom of the bridge one by one, and there is a sliding space on the I-beam sliding rails; each set of mounting brackets is provided with: Two rows of rollers, which are all rotatably arranged on the mounting bracket; the two rows of rollers are respectively arranged on both sides of the I-beam sliding rail, the rollers are located in the sliding space and are rotationally matched with the I-beam sliding rail; the I-beam sliding rail can provide support for the rollers; A rack, which is connected to the bottom of the I-beam sliding rail; the rack is arranged along the length direction of the I-beam sliding rail; A support structure, which is connected to one end of the mounting bracket; a gear is rotatably arranged on the support structure, and the gear meshes with the rack; A driving motor, which is connected to the support structure; the output shaft of the driving motor is connected to the gear to drive the gear to rotate.

2. The traveling device of a bridge bottom inspection vehicle according to claim 1, characterized in that, A driving rod is connected to the output shaft of the driving motor, and a turntable is connected to the top of the driving rod.

3. The traveling device of a bridge bottom inspection vehicle according to claim 1, characterized in that, Two guide plates are connected to the other end of the mounting bracket, and the two guide plates are respectively located on both sides of the I-beam sliding rail; a guide wheel is rotatably arranged on each guide plate, and the guide wheel contacts the side part of the I-beam sliding rail to laterally limit the mounting bracket.

4. The traveling device of a bridge bottom inspection vehicle according to claim 3, characterized in that, The guide wheel includes: A rotating shaft, which is connected to the guide plate; a bearing is arranged on the rotating shaft, and the rotating shaft is fixedly matched with the inner ring of the bearing; A wheel body, which is fixedly matched with the outer ring of the bearing; the wheel body can rotate relative to the rotating shaft.

5. The traveling device of a bridge bottom inspection vehicle according to claim 4, characterized in that, The guide plate has a through hole for the rotating shaft to pass through, and the side wall of the guide plate has a threaded hole communicated with the through hole; a tightening bolt is arranged in the threaded hole of the guide plate, and one end of the tightening bolt can abut against the outer peripheral wall of the rotating shaft.

6. The traveling device of a bridge bottom inspection vehicle according to claim 4, characterized in that, The outer peripheral wall of the rotating shaft has an external thread, and the bottom end of the rotating shaft passes through the guide plate; nuts are arranged at the positions of the top and bottom of the guide plate on the rotating shaft, and the rotating shaft clamps the guide plate through the cooperation of the two nuts.

7. The traveling device of a bridge bottom inspection vehicle according to claim 1, characterized in that, Falling protection mechanisms are arranged at both ends of the mounting bracket, the falling protection mechanisms are connected to the mounting bracket, the falling protection mechanisms have a support part located in the sliding space, and there is a gap between the support part and the bottom of the I-beam sliding rail.

8. The traveling device of a bridge bottom inspection vehicle according to claim 7, characterized in that, The falling protection mechanism includes a C-shaped frame, and the C-shaped frame is connected to the mounting bracket; the opening of the C-shaped frame is inserted and matched with the bottom of the I-beam sliding rail, so that a part of the C-shaped frame is located in the sliding space.

9. The traveling device of a bridge bottom inspection vehicle according to claim 7, characterized in that, There are two falling protection mechanisms at each end of the mounting bracket, and the two falling protection mechanisms are respectively located on both sides of the I-beam sliding rail.

10. The traveling device of a bridge bottom inspection vehicle according to claim 1, characterized in that, The rack and the I-beam sliding rail are connected by welding or bolt connection.

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