CN211472036U - Bridge detects uses running gear - Google Patents

Abstract

The utility model discloses a bridge detects uses running gear relates to bridge detection technology field, including the fixing base, the middle part fixedly connected with support column of fixing base upper surface, a side of support column is fixed articulated to have a sixth connecting rod. This running gear is used in bridge detection, can make the focus of mounting panel more steady through the bellows, thereby improve the stability of mounting panel, inside through the fixing base is equipped with the movable block, traveller and expanding spring two can effectively increase the compressibility of fixing base, avoid the damage of fixing base, through being provided with buffer, thereby it is effectual to have improved the mounting panel buffering, thereby more steady between mounting panel and the fixing base, be provided with pivot one and pivot two through the bottom surface at the mounting panel, and the head rod, the second connecting rod, cooperation setting between third connecting rod to the ninth connecting rod, make the cooperation between fixing base and the mounting panel improve the effect nature of integrated device, the holistic shock attenuation of running gear has been improved.

Description

Bridge detects uses running gear

Technical Field

The utility model relates to a bridge detects technical field, specifically is a bridge detects uses running gear.

Background

The bridge is a special vehicle which can provide an operation platform for bridge detection personnel in the detection process, is provided with a bridge detection instrument and is used for mobile detection and maintenance operation.

When the bridge detection vehicle detects a bridge, the vehicle needs to be stopped on a bridge floor, and then the truss is utilized for operation, the shock absorption structure of the existing bridge detection walking device is simple, the buffer effect is difficult to realize, and the action of the walking device is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a bridge detects uses running gear possesses the advantage of buffering, has solved the comparatively simple problem of shock-absorbing structure.

The utility model discloses a solve above-mentioned technical problem, provide following technical scheme: the utility model provides a bridge detects uses running gear, which comprises a fixed base, the middle part fixedly connected with support column of fixing base upper surface, the fixed articulated sixth connecting rod that has in a side of support column, the fixed articulated seventh connecting rod that has in a side that the sixth connecting rod was kept away from to the support column, the fixed articulated fifth connecting rod that has in one end that the support column was kept away from to the sixth connecting rod, the fixed articulated ninth connecting rod that has in one end that the support column was kept away from to the seventh connecting rod, the both sides of support column all are equipped with buffer, buffer's bottom surface and the last fixed surface of fixing base are connected, two shock.

The top fixedly connected with expansion box of support column, the equal fixedly connected with dead lever in a side that the ninth connecting rod is adjacent with the fifth connecting rod, the one end fixed hinge that the seventh connecting rod was kept away from to the ninth connecting rod has eighth connecting rod, the one end fixed hinge that the sixth connecting rod was kept away from to the fifth connecting rod has the fourth connecting rod, the one end fixed hinge that the fifth connecting rod was kept away from to the fourth connecting rod has pivot two, the one end fixed hinge that the ninth connecting rod was kept away from to the eighth connecting rod has pivot two, the top fixedly connected with mounting panel of pivot two.

The equal fixedly connected with damping damper in four edges of the bottom surface of mounting panel, and damping damper's bottom surface and the last fixed surface of fixing base are connected, the both sides of pivot two all are equipped with pivot one, the top of pivot one and the bottom surface fixed connection of mounting panel, the equal fixed articulated head rod that has in bottom of every pivot one, the fixed articulated movable block that has been connected with in one end that pivot one was kept away from to the head rod, the fixed articulated second connecting rod that has in middle part of head rod surface, the fixed articulated third connecting rod that has been connected with in one end that the head rod was kept away from to the second connecting rod.

The buffer device comprises a buffer device shell, a fixed plate is arranged inside the buffer device shell, one end, far away from the second connecting rod, of the third connecting rod penetrates through the buffer device shell and is fixedly connected with one side face of the fixed plate, the inner side wall, far away from the third connecting rod, of the buffer device shell is fixedly connected with a first air pressure cavity, one side face, far away from the third connecting rod, of the fixed plate is fixedly connected with a first air pressure rod, one end, far away from the fixed plate, of the first air pressure rod penetrates through the air pressure cavity and extends to the inside of the first air pressure cavity, sliders are fixedly connected with the top end and the bottom end of the fixed plate, guide columns are fixedly connected with the inner side wall of the buffer device shell, one ends of the guide columns penetrate through the sliders and extend to the outside of the sliders.

The inside of every surge tank all is equipped with the connecting plate, two damping spring mechanisms of the equal fixedly connected with in upper surface of every connecting plate, the top of two damping spring mechanisms and the interior roof fixed connection of surge tank, the middle part fixedly connected with fixed column of connecting plate bottom surface, the fixed column runs through the surge tank and extends to the outside of surge tank, the surface of every fixed column all overlaps and is equipped with two yielding rubber circles, the one end fixedly connected with cushion of connecting plate is kept away from to the fixed column, the bottom surface fixedly connected with chassis of cushion, one side fixed articulated on chassis has two tires.

Further, the inside of expansion box is equipped with the division board, the top and the bottom of division board and the inner wall fixed connection of division board, the equal fixedly connected with pulling force reset spring of both sides face of division board, and the one end fixedly connected with ejector pad that the division board was kept away from to pulling force reset spring.

Through adopting above-mentioned technical scheme, can make the pulling force reset spring of both sides keep apart to realize pulling force reset spring from the drawing of both sides direction, improved the stability of expansion box.

Further, the one end that the ninth connecting rod was kept away from to the dead lever runs through the bellows and extends to the inside of bellows, and the one end and the ejector pad fixed connection of ninth connecting rod are kept away from to the dead lever, the middle part fixedly connected with dead lever of a side of fifth connecting rod, and the one end that the fifth connecting rod was kept away from to the dead lever runs through the bellows and extends to the inside of bellows, and the one end and the ejector pad fixed connection of fifth connecting rod are kept away from to the dead lever.

Through adopting above-mentioned technical scheme, make the cooperation between fixing base and the mounting panel improve the effect nature of integrated device, improved the holistic shock attenuation nature of running gear.

Furthermore, cavities are formed in the two sides of the fixing seat, sliding columns are fixedly connected to the inner walls of the cavities, moving blocks are sleeved on the outer surfaces of the sliding columns, a second expansion spring is wound on the outer surfaces of the sliding columns, one end of the second expansion spring is fixedly connected with one side face of each moving block, and the other end of the second expansion spring is fixedly connected with the inner side wall of each cavity.

Through adopting above-mentioned technical scheme, can effectively increase the compressibility of fixing base, avoid the damage of fixing base.

Furthermore, one end, far away from the fixed plate, of the first air pressure rod is fixedly connected with a second sealing piston, the diameter value of the second sealing piston is matched with the inner wall of the first air pressure cavity, a sealing block is fixedly embedded in the inner side wall of the first air pressure cavity, and the first air pressure rod penetrates through the sealing block and extends into the first air pressure cavity.

Through adopting above-mentioned technical scheme, can effectively improve the leakproofness of an inside of atmospheric pressure chamber, avoid gas loss, reduce atmospheric pressure.

Furthermore, the outer surface of the first air pressure cavity is fixedly embedded with a symmetrical communicating pipe, one end of the communicating pipe penetrates through the second air pressure cavity and extends to the inside of the second air pressure cavity, the other end of the communicating pipe is communicated with the first air pressure cavity, one side, far away from the inner side wall of the shell of the buffer device, of the second air pressure cavity is provided with a push plate, one side face, far away from the guide column, of the push plate is fixedly connected with a second air pressure rod, one end, far away from the push plate, of the second air pressure rod penetrates through the second air pressure cavity and extends to the inside of the second air.

By adopting the technical scheme, the matching between the first air pressure cavity and the second air pressure cavity is improved, so that the buffering effect of the buffering device is improved.

Furthermore, the outer surface of the guide column is wound with a first telescopic spring, one end of the first telescopic spring is fixedly connected with one side face of the push plate, the other end of the first telescopic spring is fixedly connected with one side face of the sliding block, one end, far away from the push plate, of the second air pressure rod is fixedly connected with a sealing piston, and the diameter value of the sealing piston is matched with the inner wall of the second air pressure cavity.

Through adopting above-mentioned technical scheme, can effectively strengthen the interior buffer of buffer, effectively avoid the extrusion atmospheric pressure chamber of third connecting rod to take place the skew temporarily, improve the leakproofness of two inside atmospheric pressure chambeies.

Compared with the prior art, the bridge detects and uses running gear has following beneficial effect:

1. the utility model can make the gravity center of the mounting plate more stable through the telescopic box, thereby improving the stability of the mounting plate, effectively increase the compressibility of the fixing seat through the inside of the fixing seat provided with the moving block, the sliding column and the telescopic spring, avoid the damage of the fixing seat, improve the good buffering effect of the mounting plate through the arrangement of the buffering device, effectively enhance the compression resistance of the walking device through the arrangement of the damping dampers at four corners of the mounting plate, thereby the mounting plate and the fixing seat are more stable, effectively make the stability of the walking device through the arrangement of the two damping boxes at the bottom surface of the fixing seat, make the cooperation between the fixing seat and the mounting plate improve the action of the whole device through the arrangement of the first rotating shaft and the second rotating shaft at the bottom surface of the mounting plate and the cooperation between the first connecting rod, the second connecting rod, the third connecting rod and the, the overall shock absorption of the walking device is improved.

2. The utility model discloses a be provided with communicating pipe between atmospheric pressure chamber one and the atmospheric pressure chamber two, the cooperation between atmospheric pressure chamber one and the atmospheric pressure chamber two has been improved, thereby improve buffer, be provided with the guide post in the buffer, the skew takes place when can effectively avoiding the extrusion atmospheric pressure chamber of third connecting rod, be provided with expanding spring one in the buffer, can effectively strengthen the cushion in the buffer, be provided with spring damper through the bottom at the fixing base, and the shock mount, the yielding rubber circle, cooperation setting between connecting plate and the chassis, the buffering shock attenuation nature of running gear bottom has been improved, be provided with the division board through the expansion box, the pulling force reset spring that can make both sides keeps apart, thereby realize pulling force reset spring from the both sides direction, the stability of expansion box has been improved.

Drawings

FIG. 1 is a schematic side view of the present invention;

FIG. 2 is a schematic view of the telescopic front view structure of the present invention;

FIG. 3 is a schematic sectional view of the buffering device of the present invention;

FIG. 4 is a schematic view of the front view structure of the shock-absorbing box of the present invention;

fig. 5 is an enlarged schematic view of a structure shown in fig. 1 according to the present invention.

In the figure: 1. a fixed seat; 2. a shock absorbing damper; 3. mounting a plate; 4. a first rotating shaft; 5. a first connecting rod; 6. a second connecting rod; 7. a third connecting rod; 8. a buffer device; 801. a buffer device housing; 802. a guide post; 803. a slider; 804. a fixing plate; 805. a first extension spring; 806. pushing the plate; 807. a second air pressure rod; 808. a second air pressure cavity; 809. a communicating pipe; 810. a first air pressure cavity; 811. a second sealing piston; 812. a first air pressure rod; 813. a sealing block; 814. a first sealing piston; 9. a moving block; 10. a traveler; 11. a cavity; 12. a second expansion spring; 13. a ninth connecting rod; 14. a damper box; 15. a damper spring mechanism; 16. a connecting plate; 17. fixing a column; 18. a shock absorbing seat; 19. a damping rubber ring; 20. a chassis; 21. a tire; 22. a second rotating shaft; 23. a fourth connecting rod; 24. a fifth connecting rod; 25. fixing the rod; 26. a sixth connecting rod; 27. a seventh connecting rod; 28. a support pillar; 29. an eighth connecting rod; 30. a telescopic box; 31. a push block; 32. a separator plate; 33. a tension return spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: a traveling device for bridge detection comprises a fixed seat 1, a support column 28 is fixedly connected to the middle of the upper surface of the fixed seat 1, a sixth connecting rod 26 is fixedly hinged to one side of the support column 28, a seventh connecting rod 27 is fixedly hinged to one side of the support column 28 far away from the sixth connecting rod 26, a fifth connecting rod 24 is fixedly hinged to one end of the sixth connecting rod 26 far away from the support column 28, a ninth connecting rod 13 is fixedly hinged to one end of the seventh connecting rod 27 far away from the support column 28, a telescopic box 30 is fixedly connected to the top end of the support column 28, a partition plate 32 is arranged inside the telescopic box 30, the top end and the bottom end of the partition plate 32 are fixedly connected to the inner wall of the partition plate 32, tension reset springs 33 are fixedly connected to two side surfaces of the partition plate 32, the tension reset springs 33 on two sides can be isolated, stretching of the tension reset springs 33, a push block 31 is fixedly connected with one end of the tension reset spring 33 far away from the isolation plate 32, a fixed rod 25 is fixedly connected with one side surface of the ninth connecting rod 13 adjacent to the fifth connecting rod 24, one end of the fixed rod 25 far away from the ninth connecting rod 13 penetrates through the telescopic box 30 and extends into the telescopic box 30, one end of the fixed rod 25 far away from the ninth connecting rod 13 is fixedly connected with the push block 31, a fixed rod 25 is fixedly connected with the middle part of one side surface of the fifth connecting rod 24, one end of the fixed rod 25 far away from the fifth connecting rod 24 penetrates through the telescopic box 30 and extends into the telescopic box 30, one end of the fixed rod 25 far away from the fifth connecting rod 24 is fixedly connected with the push block 31, so that the cooperation between the fixed seat 1 and the mounting plate 3 improves the action of the whole walking device, the shock absorption of the whole walking device is improved, an eighth connecting rod 29 is fixedly hinged with one, one end of the fifth connecting rod 24, which is far away from the sixth connecting rod 26, is fixedly hinged with a fourth connecting rod 23, one end of the fourth connecting rod 23, which is far away from the fifth connecting rod 24, is fixedly hinged with a second rotating shaft 22, one end of the eighth connecting rod 29, which is far away from the ninth connecting rod 13, is fixedly hinged with a second rotating shaft 22, and the top end of the second rotating shaft 22 is fixedly connected with the mounting plate 3.

Four corners of the bottom surface of the mounting plate 3 are fixedly connected with shock-absorbing dampers 2, the bottom surface of each shock-absorbing damper 2 is fixedly connected with the upper surface of the corresponding fixing seat 1, cavities 11 are arranged inside two sides of each fixing seat 1, sliding columns 10 are fixedly connected with the inner walls of the cavities 11, moving blocks 9 are sleeved on the outer surfaces of the sliding columns 10, telescopic springs two 12 are wound on the outer surfaces of the sliding columns 10, one ends of the telescopic springs two 12 are fixedly connected with one side surfaces of the moving blocks 9, the other ends of the telescopic springs two 12 are fixedly connected with the inner side walls of the cavities 11, the compressibility of the fixing seat 1 can be effectively increased, damage to the fixing seat 1 is avoided, rotating shafts one 4 are arranged on two sides of each rotating shaft two 22, the top ends of the rotating shafts one 4 are fixedly connected with the bottom surface of the mounting plate 3, first connecting rods 5 are fixedly hinged to the bottom ends of the rotating shafts one, the middle part of the outer surface of the first connecting rod 5 is fixedly hinged with a second connecting rod 6, one end, away from the first connecting rod 5, of the second connecting rod 6 is fixedly hinged with a third connecting rod 7, the two sides of the supporting column 28 are respectively provided with a buffer device 8, and the bottom surface of each buffer device 8 is fixedly connected with the upper surface of the fixing seat 1.

The buffer device 8 comprises a buffer device shell 801, a fixing plate 804 is arranged in the buffer device shell 801, one end of the third connecting rod 7, far away from the second connecting rod 6, penetrates through the buffer device shell 801 and is fixedly connected with one side surface of the fixing plate 804, the inner side wall of the buffer device shell 801, far away from the third connecting rod 7, is fixedly connected with a first air pressure cavity 810, one side surface of the fixing plate 804, far away from the third connecting rod 7, is fixedly connected with a first air pressure rod 812, one end of the first air pressure rod 812, far away from the fixing plate 804, is fixedly connected with a second sealing piston 811, the diameter value of the second sealing piston 811 is matched with the inner wall of the first air pressure cavity 810, a sealing block 813 is fixedly embedded in the inner side wall of the first air pressure cavity 810, the first air pressure rod 812 penetrates through the sealing block 813 and extends to the inside of the first air pressure cavity 810, the sealing performance in the inside of the first air pressure cavity 810 can be effectively improved, gas, the top end and the bottom end of the fixed plate 804 are both fixedly connected with a slide block 803, the inner side wall of the shell 801 of the buffer device is fixedly connected with a guide column 802, the outer surface of the guide column 802 is wound with a first telescopic spring 805, one end of the first telescopic spring 805 is fixedly connected with one side surface of the push plate 806, the other end of the first telescopic spring 805 is fixedly connected with one side surface of the slide block 803, one end of a second air pressure rod 807, which is far away from the push plate 806, is fixedly connected with a first sealing piston 814, the diameter value of the first sealing piston 814 is matched with the inner wall of a second air pressure cavity 808, one end of the guide column 802 penetrates through the slide block 803 and extends to the outside of the slide block 803, the two sides of the first air pressure cavity 810 are both provided with the second air pressure cavity 808, one side surfaces of the second air pressure cavity 808 are fixedly connected with the inner side wall of the shell, the tightness of the interior of the second pneumatic cavity 808 is improved, the outer surface of the first pneumatic cavity 810 is fixedly embedded with symmetrical communicating pipes 809, one end of each communicating pipe 809 penetrates through the second pneumatic cavity 808 and extends to the interior of the second pneumatic cavity 808, the other end of each communicating pipe 809 is communicated with the first pneumatic cavity 810, the matching between the first pneumatic cavity 810 and the second pneumatic cavity 808 is improved, so that the buffering effect of the buffering device 8 is improved, a push plate 806 is arranged on one side, away from the inner side wall of the shell 801 of the buffering device, of the second pneumatic cavity 808, one side, away from the guide column 802, of the push plate 806 is fixedly connected with a second pneumatic rod 807, one end, away from the push plate 806, of the second pneumatic rod 807 penetrates through the second pneumatic cavity 808 and extends to the interior of the second pneumatic cavity 808.

Two surge tanks 14 of bottom surface fixedly connected with of fixing base 1, the inside of every surge tank 14 all is equipped with connecting plate 16, two damping spring mechanisms 15 of the equal fixedly connected with in upper surface of every connecting plate 16, the top of two damping spring mechanisms 15 and surge tank 14's interior roof fixed connection, the middle part fixedly connected with fixed column 17 of connecting plate 16 bottom surface, fixed column 17 runs through surge tank 14 and extends to the outside of surge tank 14, every fixed column 17's surface all overlaps and is equipped with two yielding rubber circles 19, the one end fixedly connected with cushion socket 18 of connecting plate 16 is kept away from to fixed column 17, the bottom surface fixedly connected with chassis 20 of cushion socket 18, one side fixed hinge joint of chassis 20 has two tires 21.

When the bridge detection device is used, the bridge detection device is fixed above the mounting plate 3, the mounting plate 3 is extruded downwards by the acting force of the detection device, so that the vibration damper 2 reduces the vibration effect of the mounting plate 3, the compression resistance of the walking device can be effectively enhanced, when the mounting plate 3 is extruded downwards, the movable block 9 transversely extrudes the second extension spring 12 through the connection between the first connecting rod 5 and the movable block 9, so that the compressibility of the fixed seat 1 can be effectively increased, the damage of the fixed seat 1 is avoided, the two sides of the tension reset spring 33 in the extension box 30 are stretched through the downward compression of the fourth connecting rod 23 and the eighth connecting rod 29, so that the tension reset spring 33 can generate reverse tension, the mounting plate 3 can play a buffering role, when the first connecting rod 5 and the second connecting rod 6 are pressed downwards, the third connecting rod 7 pushes the fixing plate 804, therefore, the fixing plate 804 pushes the first air pressure rod 812, the second sealing piston 811 pushes the first air pressure cavity 810, the air in the first air pressure cavity 810 is compressed into the second air pressure cavities 808 on the two sides through the extrusion of the second sealing piston 811, the air in the second air pressure cavity 808 pushes the first sealing piston 814, the push plate 806 can push the first extension spring 805, and the buffer device 8 plays a role in buffering.

Claims (8)

1. The utility model provides a bridge detects uses running gear, includes fixing base (1), its characterized in that: the middle part fixedly connected with support column (28) of fixing base (1) upper surface, the fixed articulated sixth connecting rod (26) that has in a side of support column (28), the fixed articulated seventh connecting rod (27) that has in a side of sixth connecting rod (26) is kept away from in support column (28), the fixed articulated fifth connecting rod (24) that has in one end of support column (28) was kept away from in sixth connecting rod (26), the fixed articulated ninth connecting rod (13) that has in one end of support column (28) was kept away from in seventh connecting rod (27), the both sides of support column (28) all are equipped with buffer (8), the bottom surface of buffer (8) and the last fixed surface of fixing base (1) are connected, the bottom surface fixedly connected with two surge tanks (14) of fixing base (1).

2. The bridge detection walking device according to claim 1, wherein: a telescopic box (30) is fixedly connected at the top end of the supporting column (28), a fixed rod (25) is fixedly connected on one side surface of the ninth connecting rod (13) adjacent to the fifth connecting rod (24), an eighth connecting rod (29) is fixedly hinged at one end of the ninth connecting rod (13) far away from the seventh connecting rod (27), a fourth connecting rod (23) is fixedly hinged at one end of the fifth connecting rod (24) far away from the sixth connecting rod (26), a second rotating shaft (22) is fixedly hinged at one end of the fourth connecting rod (23) far away from the fifth connecting rod (24), a second rotating shaft (22) is fixedly hinged at one end of the eighth connecting rod (29) far away from the ninth connecting rod (13), a mounting plate (3) is fixedly connected at the top end of the second rotating shaft (22), a separation plate (32) is arranged in the telescopic box (30), and the top end and the bottom end of the separation plate (32) are fixedly, both sides face of the isolation plate (32) are fixedly connected with a tension reset spring (33), and one end of the tension reset spring (33) far away from the isolation plate (32) is fixedly connected with a push block (31).

3. The bridge detection walking device according to claim 2, wherein: the equal fixedly connected with damping damper (2) in four edges of the bottom surface of mounting panel (3), and the bottom surface of damping damper (2) and the last fixed surface of fixing base (1) are connected, the both sides of pivot two (22) all are equipped with pivot one (4), the top of pivot one (4) and the bottom surface fixed connection of mounting panel (3), the bottom of every pivot one (4) is all fixed articulated to have head rod (5), the fixed hinge joint in one end that pivot one (4) were kept away from in head rod (5) has movable block (9), the fixed hinge joint in middle part of head rod (5) surface has second connecting rod (6), the fixed hinge joint in one end that head rod (5) were kept away from in second connecting rod (6) has third connecting rod (7).

4. The bridge detection walking device according to claim 1, wherein: the buffer device (8) comprises a buffer device shell (801), a fixing plate (804) is arranged inside the buffer device shell (801), one end, far away from the second connecting rod (6), of the third connecting rod (7) penetrates through the buffer device shell (801) and is fixedly connected with one side face of the fixing plate (804), the inner side wall, far away from the third connecting rod (7), of the buffer device shell (801) is fixedly connected with a first air pressure cavity (810), one side face, far away from the third connecting rod (7), of the fixing plate (804) is fixedly connected with a first air pressure rod (812), one end, far away from the fixing plate (804), of the first air pressure rod (812) penetrates through the first air pressure cavity (810) and extends to the inside of the first air pressure cavity (810), the top end and the bottom end of the fixing plate (804) are both fixedly connected with sliders (803), the inner side wall of the buffer device shell (801) is fixedly connected with a guide column (802), one end of the guide, two sides of the first air pressure cavity (810) are respectively provided with a second air pressure cavity (808), and one side surface of the second air pressure cavity (808) is fixedly connected with the inner side wall of the shell (801) of the buffer device.

5. The bridge detection walking device according to claim 1, wherein: the inside of every surge tank (14) all is equipped with connecting plate (16), two damping spring mechanism (15) of the equal fixedly connected with of upper surface of every connecting plate (16), the top of two damping spring mechanism (15) and the interior roof fixed connection of surge tank (14), middle part fixedly connected with fixed column (17) of connecting plate (16) bottom surface, fixed column (17) run through surge tank (14) and extend to the outside of surge tank (14), the surface of every fixed column (17) all is equipped with two yielding rubber circle (19), the one end fixedly connected with cushion socket (18) of connecting plate (16) are kept away from in fixed column (17), the bottom surface fixedly connected with chassis (20) of cushion socket (18), one side fixed articulated of chassis (20) have two tires (21).

6. The bridge detection walking device according to claim 2, wherein: the one end that the ninth connecting rod (13) was kept away from in dead lever (25) runs through expansion box (30) and extends to the inside of expansion box (30), the one end and ejector pad (31) fixed connection of ninth connecting rod (13) are kept away from in dead lever (25), middle part fixedly connected with dead lever (25) of the side of fifth connecting rod (24), the one end that fifth connecting rod (24) were kept away from in dead lever (25) runs through expansion box (30) and extends to the inside of expansion box (30), the one end and ejector pad (31) fixed connection of fifth connecting rod (24) are kept away from in dead lever (25).

7. The bridge detection walking device according to claim 1, wherein: the inside of fixing base (1) both sides all is equipped with cavity (11), the inner wall fixedly connected with traveller (10) of cavity (11), and the movable block (9) has been cup jointed to the surface of traveller (10), and the surface winding of traveller (10) has expansion spring two (12), and the one end of expansion spring two (12) and a side fixed connection of movable block (9), the other end of expansion spring two (12) and the inside wall fixed connection of cavity (11).

8. The bridge detection walking device according to claim 4, wherein: one end of the first air pressure rod (812), which is far away from the fixed plate (804), is fixedly connected with a second sealing piston (811), the diameter value of the second sealing piston (811) is matched with the inner wall of the first air pressure cavity (810), a sealing block (813) is fixedly embedded in the inner side wall of the first air pressure cavity (810), the first air pressure rod (812) penetrates through the sealing block (813) and extends to the inside of the first air pressure cavity (810), a symmetrical communicating pipe (809) is fixedly embedded in the outer surface of the first air pressure cavity (810), one end of the communicating pipe (809) penetrates through the second air pressure cavity (808) and extends to the inside of the second air pressure cavity (808), the other end of the communicating pipe (809) is communicated with the first air pressure cavity (810), a push plate (806) is arranged on one side, which is far away from the inner side wall of the buffer device shell (801), of one side, which is far away from the guide column (802), of, one end, far away from the push plate (806), of the second air pressure rod (807) penetrates through the second air pressure cavity (808) and extends to the inside of the second air pressure cavity (808), a sealing strip is fixedly embedded in the inner side wall of the second air pressure cavity (808), a first expansion spring (805) is wound on the outer surface of the guide column (802), one end of the first expansion spring (805) is fixedly connected with one side face of the push plate (806), the other end of the first expansion spring (805) is fixedly connected with one side face of the sliding block (803), one end, far away from the push plate (806), of the second air pressure rod (807) is fixedly connected with a first sealing piston (814), and the diameter value of the first sealing piston (814) is matched with the inner wall of the second air pressure cavity (808.

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