CN214423207U - Bridge maintenance replacing equipment with automatic support replacing function - Google Patents

Abstract

The utility model discloses a take bridge maintenance replacement equipment that automatic support was changed relates to bridge engineering technical field. The technical key points are as follows: the first vehicle body and the second vehicle body are respectively arranged on two sides of the bridge body, the first vehicle body is hinged with a first suspender, the first suspender is rotatably connected with a first pulley and a second pulley, the first pulley and the second pulley are respectively wound with a first inhaul cable and a second inhaul cable, a balancing weight is additionally arranged, the first inhaul cable and the second inhaul cable are hinged to the balancing weight, a sliding rail is fixedly connected to one side of the balancing weight, the sliding rail is movably connected with an auxiliary plate, the two ends of the auxiliary plate are respectively fixedly connected with a third inhaul cable and a fourth inhaul cable, the third inhaul cable and the fourth inhaul cable are respectively wound with a third pulley and a fourth pulley, a second suspender is additionally arranged, the third pulley and the fourth pulley are both rotatably connected to the second suspender, and the second suspender is hinged to the second vehicle body. The working platform is suspended under the bridge body through the vehicle body and the second vehicle body, so that the mechanism does not need to consider the environment under the bridge, and has universality.

Description

Bridge maintenance replacing equipment with automatic support replacing function

Technical Field

The utility model relates to a bridge engineering technical field specifically is a take bridge maintenance replacement equipment that automatic support was changed.

Background

The bridge support is an important structural component for connecting an upper structure and a lower structure of a bridge, is positioned between a bridge deck and piers, can reliably transfer load and deformation borne by the upper structure of the bridge to the lower structure of the bridge, and is an important force transfer device of the bridge. Common forms of bridge supports include: felt or dull and stereotyped support, board-like rubber support, ball-type support, steel support and special support etc. bridge beam supports uses for a long time and can take place deformation, consequently needs the periodic replacement, and the operation platform need be built in the change of current bridge beam supports, and inefficiency and extravagant manpower, and automatic bridge beam supports change equipment is imperative.

For example, the prior Chinese patent with publication number CN111764312A discloses a bridge maintenance and replacement device with automatic support replacement, which comprises a movable carrier, a first support plate is fixedly arranged on the right end face of the movable carrier, a second support plate is fixedly arranged on the upper end face of the first support plate, the second bracket plate is internally provided with a first chute cavity with an upward opening, the first chute cavity is internally provided with a climbing device in a sliding way, the upper end surface of the climbing device is fixedly provided with a replacing device, the invention has convenient movement, in the construction process, no scaffold is required to be built for assisting construction, only the equipment is driven to the specified position after a new bridge support is placed at the specified position, because the automatic replacing device has high automation degree, the automatic replacing device can complete the automatic replacing of the bridge support, greatly shorten the construction time, reduce the construction difficulty and simultaneously avoid potential safety hazards caused by manual construction.

The above prior art solution has the following drawbacks: need artifically to put the assigned position with the bridge beam supports, consume the manpower, climbing device need begin the climbing from the pier bottom simultaneously, implements comparatively difficultly when the pier bottom is special topography such as river, canyon, and the device can not adapt to changeable operation environment.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a take bridge maintenance replacement equipment that automatic support was changed, it is through setting up first automobile body and second automobile body, and first automobile body suspends the slide rail in midair under the pontic with the second automobile body, need not to consider changeable underbridge environment, more has the universality, through setting up the third automobile body that slides in the slide rail, the change of the automatic completion bridge beam supports of change mechanism that the third automobile body carried, use manpower sparingly, ensured operation personnel's safety simultaneously.

The above object of the present invention can be achieved by the following technical solutions:

a bridge maintenance replacing device with an automatic support replacing function comprises a first vehicle body and a second vehicle body, wherein the first vehicle body and the second vehicle body are respectively arranged on two sides of the bridge body, one side, far away from the ground, of the first vehicle body is hinged with a first hanging rod, one end, far away from the first vehicle body, of the first hanging rod is rotatably connected with a first pulley and a second pulley, the axes of the first pulley and the second pulley are horizontally arranged, a first inhaul cable and a second inhaul cable are respectively wound on the first pulley and the second pulley, one ends, close to the first vehicle body, of the first inhaul cable and the second inhaul cable are respectively wound with a first winder and a second winder, the first winder and the second winder are both rotatably connected to the first vehicle body, a balancing weight is additionally arranged, the other end of the first inhaul cable is hinged to one side, perpendicular to the ground, and the other end of the second inhaul cable is hinged to one side, parallel to the ground, of the balancing weight, one side of the balancing weight block, which is far away from the first inhaul cable, is fixedly connected with a plurality of horizontally arranged slide rails, a third vehicle body is arranged, one sides of the slide rails, which are far away from the ground, are all connected with the third vehicle body in a sliding manner, an auxiliary plate is arranged, one ends of the slide rails, which are far away from the balancing weight block, are all movably connected with the auxiliary plate, a third pull rope and a fourth pull rope are respectively fixedly connected with two ends of the auxiliary plate, a third pulley and a fourth pulley are respectively wound on the third pull rope and the fourth pull rope, a second hanging rod is additionally arranged, the third pulley and the fourth pulley are both rotationally connected to the second suspender, one end of the second suspender, which is far away from the third pulley, is hinged to the second vehicle body, one side, far away from the ground, of the second vehicle body is rotatably connected with a third winder, and the third stay cable and the fourth stay cable are far away from one end of the auxiliary plate and are wound on the third winder.

Through adopting above-mentioned technical scheme, through setting up first automobile body and second automobile body, first automobile body and second automobile body suspend the slide rail under the pontic, need not to consider changeable underbridge environment, more have the universality, through setting up the third automobile body that slides in the slide rail, the change of bridge beam supports is accomplished automatically to the change mechanism that the third automobile body carried, uses manpower sparingly, has ensured operating personnel's safety simultaneously.

The present invention may be further configured in a preferred embodiment as: the side, away from the ground, of the third vehicle body is provided with a replacing mechanism, the replacing mechanism comprises a workbench, the workbench is attached to the third vehicle body, one side, close to the ground, of the workbench is fixedly connected with a rotating shaft, the rotating shaft penetrates through and is rotatably connected to the third vehicle body, the other end of the rotating shaft is fixedly connected with the output end of a first motor, the axis of an output shaft of the first motor is vertically arranged, the first motor is fixedly connected to the third vehicle body, one side, away from the ground, of the workbench is fixedly connected with a first air cylinder, the axis of the output shaft of the first air cylinder is horizontally arranged, the output end of the first air cylinder is fixedly connected with a manipulator, the replacing mechanism is further provided with a feeding mechanism, the feeding mechanism comprises a telescopic rod, the axis of the output shaft of the telescopic rod is vertically arranged, the output end of the telescopic rod is fixedly connected with a feeding table, and a plurality of second air cylinders parallel to the first air cylinder are further provided, the second cylinders are fixedly connected to the workbench, the output ends of the second cylinders are fixedly connected with jacks, and the jacks are vertically arranged.

Through adopting above-mentioned technical scheme, through setting up the second cylinder, the second cylinder sends into the jack the junction of pier and pontic, and jack work lifting pontic through setting up first cylinder, and first cylinder drives the manipulator and accomplishes the change operation, through setting up feeding mechanism, can once carry a plurality of bridge beam supports, has improved work efficiency.

The present invention may be further configured in a preferred embodiment as: the lifting mechanism comprises a third cylinder, the axis of an output shaft of the third cylinder is vertically arranged, the third cylinder is fixedly connected with the first vehicle body and the second vehicle body, the output end of the third cylinder is hinged with a sliding block, and the sliding block is slidably connected with the first suspender and the second suspender.

Through adopting above-mentioned technical scheme, through setting up elevating system, the flexible first jib of driving and the not co-altitude of second jib lifting of third cylinder to reply the high different bridge railing of height.

The present invention may be further configured in a preferred embodiment as: one side, close to the ground, of the sliding rail is provided with a driving mechanism, the driving mechanism comprises a rack parallel to the sliding rail, the rack is fixedly connected to the sliding rail, the rack is meshed with a gear, the gear is fixedly connected with the output end of a second motor, the axis of an output shaft of the second motor is horizontally arranged, and the second motor is fixedly connected to a third vehicle body.

Through adopting above-mentioned technical scheme, through setting up actuating mechanism, for the removal of third automobile body provides power, realize the accurate location of third automobile body through setting up gear, rack, make it can the quick travel to bridge support position, improved work efficiency.

The present invention may be further configured in a preferred embodiment as: first pulley is the double flute pulley, first cable has two, two the offside of balancing weight is located respectively to first cable.

Through adopting above-mentioned technical scheme, through setting up two first cables, restricted the balancing weight in aerial position, improved the stability of balancing weight.

The present invention may be further configured in a preferred embodiment as: and one sides of the first vehicle body and the second vehicle body, which are close to the ground, are both rotatably connected with a chassis.

Through adopting above-mentioned technical scheme, through establishing the chassis for first automobile body on the chassis can rotate with the second automobile body, has made things convenient for the dismantlement of balancing weight, third automobile body etc..

The present invention may be further configured in a preferred embodiment as: one end of the sliding rail, which is close to the auxiliary plate, is fixedly connected with a hook.

Through adopting above-mentioned technical scheme, through setting up the couple, make the slide rail more firm with being connected of accessory plate, improved the security of equipment.

The present invention may be further configured in a preferred embodiment as: and a collecting box is arranged on an extension line of the axis of the output shaft of the first cylinder, and the collecting box is fixedly connected to the workbench.

By adopting the technical scheme, the waste bridge supports are collected in a unified manner in the replacement process by arranging the collecting boxes, so that the management is facilitated.

The present invention may be further configured in a preferred embodiment as: the first winder, the second winder and the third winder are respectively and fixedly connected with the output end of a third motor, and the third motor is respectively fixed on the first vehicle body or the second vehicle body.

Through adopting above-mentioned technical scheme, through setting up the third motor, for first winder, second winder, third winder provide power, saved the manpower.

To sum up, the utility model discloses a following at least one useful technological effect:

1. through setting up first automobile body and second automobile body, first automobile body and second automobile body suspend the slide rail in midair under the pontic, need not to consider changeable underbridge environment, more have the universality, through setting up the third automobile body that slides in the slide rail, the change mechanism that the third automobile body carried accomplishes the change of bridge beam supports automatically, uses manpower sparingly, has ensured operating personnel's safety simultaneously.

2. The second cylinder is arranged, the jack is sent to the joint of the bridge pier and the bridge body by the second cylinder, the bridge body is lifted by the jack in a working mode, the first cylinder drives the manipulator to complete replacement operation by the aid of the first cylinder, and a plurality of bridge supports can be carried at one time by the aid of the feeding mechanism, so that working efficiency is improved;

3. through setting up actuating mechanism, for the removal of third automobile body provides power, realize the accurate location of third automobile body through setting up gear, rack, make it can the quick travel to bridge support position, improved work efficiency.

Drawings

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

FIG. 2 is a schematic view of the first and second vehicle bodies;

FIG. 3 is a schematic view of the structure of the work table;

FIG. 4 is an enlarged schematic view at A in FIG. 1;

FIG. 5 is an enlarged schematic view at B of FIG. 1;

fig. 6 is an enlarged schematic view at C in fig. 1.

Reference numerals: 1. a first vehicle body; 11. a first boom; 111. a first pulley; 112. a second pulley; 12. a first cable; 13. a second cable; 14. a first winder; 15. a second reel; 2. a second vehicle body; 21. a second boom; 211. a third pulley; 212. a fourth pulley; 22. a third cable; 23. a fourth cable; 24. a third reel; 3. a third vehicle body; 31. a mechanism is replaced; 311. a work table; 312. a first cylinder; 313. a manipulator; 314. a second cylinder; 315. a jack; 316. a collection box; 32. a rotating shaft; 33. a first motor; 34. a feeding mechanism; 341. a telescopic rod; 342. a feeding table; 4. a balancing weight; 41. a slide rail; 42. hooking; 43. an auxiliary plate; 5. a lifting mechanism; 51. a third cylinder; 52. a slider; 6. a drive mechanism; 61. a rack; 62. a gear; 63. a second motor; 7. a chassis; 8. a third motor; 9. a bridge body.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, a bridge maintenance and replacement apparatus with automatic support replacement disclosed by the present invention comprises a first vehicle body 1 and a second vehicle body 2, wherein the first vehicle body 1 and the second vehicle body 2 are respectively disposed at two sides of a bridge body 9, a first boom 11 is hinged at a side of the first vehicle body 1 away from the ground, one end of the first boom 11 away from the first vehicle body 1 is rotatably connected with a first pulley 111 and a second pulley 112 with horizontal axes, the first pulley 111 and the second pulley 112 are respectively wound with a first cable 12 and a second cable 13, one ends of the first cable 12 and the second cable 13 close to the first vehicle body 1 are respectively wound with a first reel 14 and a second reel 15, the first reel 14 and the second reel 15 are both rotatably connected to the first vehicle body 1, a counterweight 4 is further disposed, the other end of the first cable 12 is hinged at a side of the counterweight 4 perpendicular to the ground, the other end of the second cable 13 is hinged at a side of the counterweight 4 parallel to the counterweight 4, the counterweight 4 is far away from the first cable 12 one side fixedly connected with two horizontally arranged slide rails 41, another third vehicle body 3 is provided, one side of the slide rails 41 far away from the ground is connected with the third vehicle body 3 in a sliding manner, another auxiliary plate 43 is provided, one end of the slide rails 41 far away from the counterweight 4 is movably connected with the auxiliary plate 43 through a hook 42, two ends of the auxiliary plate 43 are respectively fixedly connected with a third cable 22 and a fourth cable 23, the third cable 22 and the fourth cable 23 are respectively wound with a third pulley 211 and a fourth pulley 212, another second suspender 21 is provided, the third pulley 211 and the fourth pulley 212 are respectively connected with the second suspender 21 in a rotating manner, one end of the second suspender 21 far away from the third pulley 211 is hinged with the second vehicle body 2, one side of the second vehicle body 2 far away from the ground is rotatably connected with a third winder 24, and one ends of the third cable 22 and the fourth cable 23 far away from the auxiliary plate 43 are wound on the third winder 24. Through setting up first automobile body 1 and second automobile body 2, first automobile body 1 and second automobile body 2 suspend slide rail 41 in midair under pontic 9, need not to consider changeable underbridge environment, more have the universality, through setting up the third automobile body 3 that slides in slide rail 41, the change of bridge beam supports is accomplished automatically to change mechanism 31 that third automobile body 3 carried, uses manpower sparingly, has ensured operation personnel's safety simultaneously. First pulley 111 is the double flute pulley, and first cable 12 has two, and the offside of balancing weight 4 is located respectively to two cables 12, through setting up two first cables 12, has restricted balancing weight 4 in aerial position, has improved balancing weight 4's stability. First automobile body 1 and second automobile body 2 are close to ground one side and all rotate and are connected with chassis 7, through establishing chassis 7 for first automobile body 1 on the chassis 7 can rotate with second automobile body 2, has made things convenient for the dismantlement of balancing weight 4, third automobile body 3 etc.. First winder 14, second winder 15, third winder 24 are fixedly connected with third motor 8's output respectively, the preferred servo motor of third motor 8, and third motor 8 is fixed in first automobile body 1 or second automobile body 2 respectively, through setting up third motor 8, provides power for first winder 14, second winder 15, third winder 24, has saved the manpower.

Referring to fig. 3 and 4, a replacing mechanism 31 is disposed on a side of the third vehicle body 3 away from the ground, the replacing mechanism 31 includes a working table 311, the working table 311 is attached to the third vehicle body 3, a rotating shaft 32 is fixedly connected to a side of the working table 311 close to the ground, the rotating shaft 32 penetrates and is rotatably connected to the third vehicle body 3, an output end of a first motor 33 is fixedly connected to another end of the rotating shaft 32, the first motor 33 is preferably a servo motor, an output shaft axis of the first motor 33 is vertically disposed, the first motor 33 is fixedly connected to the third vehicle body 3, a first cylinder 312 is fixedly connected to a side of the working table 311 away from the ground, an output shaft axis of the first cylinder 312 is horizontally disposed, a manipulator 313 is fixedly connected to an output end of the first cylinder 312, a feeding mechanism 34 is further disposed, the feeding mechanism 34 includes an electric telescopic rod 341, an output shaft axis of the telescopic rod 341 is vertically disposed, and a feeding table 342 is fixedly connected to an output end of the telescopic rod 341, two second air cylinders 314 parallel to the first air cylinder 312 are further arranged, the two second air cylinders 314 are both fixedly connected to the workbench 311, the output ends of the second air cylinders 314 are fixedly connected with jacks 315, and the jacks 315 are vertically arranged. Through setting up second cylinder 314, second cylinder 314 sends jack 315 into the junction of pier and pontic 9, and jack 315 work lifting pontic 9, through setting up first cylinder 312, first cylinder 312 drives manipulator 313 and accomplishes the change operation, through setting up feeding mechanism 34, can once carry a plurality of bridge beam supports, has improved work efficiency. Slide rail 41 is close to ground one side and is provided with actuating mechanism 6, actuating mechanism 6 is including the rack 61 that is on a parallel with slide rail 41, rack 61 fixed connection is in slide rail 41, rack 61 meshes has gear 62, gear 62 fixedly connected with second motor 63's output, the preferred servo motor of second motor 63, the output shaft axis level of second motor 63 sets up, second motor 63 fixed connection is in third automobile body 3, through setting up actuating mechanism 6, provide power for the removal of third automobile body 3, through setting up gear 62, rack 61 realizes the accurate location of third automobile body 3, make it can the fast movement to bridge beam supports position, and the work efficiency is improved. The extension line of the output shaft axis of the first air cylinder 312 is provided with a collection box 316, the collection box 316 is fixedly connected to the workbench 311, and by arranging the collection box 316, the waste bridge supports are collected in a unified mode in the replacement process, so that management is facilitated.

As shown in fig. 5 and 6, the lifting mechanisms 5 are disposed on the sides of the first boom 11 and the second boom 21 close to the ground, each lifting mechanism 5 includes a third cylinder 51, the axis of the output shaft of each third cylinder 51 is vertically disposed, the third cylinders 51 are fixedly connected to the first vehicle body 1 and the second vehicle body 2, the output ends of the third cylinders 51 are hinged to a slider 52, the sliders 52 are slidably connected to the first boom 11 and the second boom 21, and by disposing the lifting mechanisms 5, the third cylinders 51 can extend and retract to drive the first boom 11 and the second boom 21 to lift different heights, so as to deal with bridge railings with different heights. One end of the sliding rail 41 close to the auxiliary plate 43 is fixedly connected with a hook 42, and the hook 42 is arranged, so that the sliding rail 41 is more stably connected with the auxiliary plate 43, and the safety of the equipment is improved.

The implementation principle of the embodiment is as follows: the third motor 8 drives the first guy cable 12, the third guy cable 22 and the fourth guy cable 23 to place the balancing weight 4 and the auxiliary plate 43 at a specified height under the bridge, the slide rail 41 is adjusted horizontally through the second guy cable 13, the slide rail 41 is connected with the auxiliary plate 43, the second motor 63 drives the third vehicle body 3 to move to a working position along the slide rail 41, the second cylinder 314 pushes the jack 315 to a position between the bridge pier and the bridge body 9, the jack 315 slightly lifts the bridge body 9, the first cylinder 312 drives the manipulator 313 to take the old support and place the old support into the collection box 316, the telescopic rod 341 drives the feeding table 342 to send the new support to the manipulator 313 in height, the manipulator 313 takes the new support to be incorporated into the specified position, and therefore the replacement of the bridge support is completed.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (9)

1. A bridge maintenance replacing device with an automatic support replacing function comprises a first vehicle body (1) and a second vehicle body (2), and is characterized in that the first vehicle body (1) and the second vehicle body (2) are respectively arranged on two sides of a bridge body (9), one side, far away from the ground, of the first vehicle body (1) is hinged with a first suspender (11), one end, far away from the first vehicle body (1), of the first suspender (11) is rotatably connected with a first pulley (111) and a second pulley (112) which are horizontally arranged along an axis, the first pulley (111) and the second pulley (112) are respectively wound with a first cable (12) and a second cable (13), the first cable (12) and the second cable (13) are close to one end of the first vehicle body (1) and are respectively wound with a first reel (14) and a second reel (15), the first reel (14) and the second reel (15) are both rotatably connected to the first vehicle body (1), a balancing weight (4) is further arranged, the other end of the first inhaul cable (12) is hinged to one side, perpendicular to the ground, of the balancing weight (4), the other end of the second inhaul cable (13) is hinged to one side, parallel to the ground, of the balancing weight (4), one side, far away from the first inhaul cable (12), of the balancing weight (4) is fixedly connected with a plurality of horizontally arranged slide rails (41), a third vehicle body (3) is further arranged, one sides, far away from the ground, of the slide rails (41) are all connected with the third vehicle body (3) in a sliding mode, an auxiliary plate (43) is further arranged, one ends, far away from the balancing weight (4), of the slide rails (41) are all movably connected with the auxiliary plate (43), two ends of the auxiliary plate (43) are respectively and fixedly connected with a third inhaul cable (22) and a fourth inhaul cable (23), and a third pulley (211) and a fourth pulley (212) are respectively wound on the third inhaul cable (22) and the fourth inhaul cable (23), and a second suspender (21) is further arranged, the third pulley (211) and the fourth pulley (212) are both rotatably connected to the second suspender (21), one end, far away from the third pulley (211), of the second suspender (21) is hinged to the second vehicle body (2), one side, far away from the ground, of the second vehicle body (2) is rotatably connected with a third reel (24), one end, far away from the auxiliary plate (43), of the third inhaul cable (22) and the fourth inhaul cable (23) is both wound on the third reel (24).

2. The bridge maintenance replacing equipment with the automatic support replacing function according to claim 1, wherein a replacing mechanism (31) is arranged on one side of the third vehicle body (3) far away from the ground, the replacing mechanism (31) comprises a workbench (311), the workbench (311) is attached to the third vehicle body (3), a rotating shaft (32) is fixedly connected to one side of the workbench (311) close to the ground, the rotating shaft (32) penetrates through and is rotatably connected to the third vehicle body (3), the other end of the rotating shaft (32) is fixedly connected with an output end of a first motor (33), an output shaft axis of the first motor (33) is vertically arranged, the first motor (33) is fixedly connected to the third vehicle body (3), a first air cylinder (312) is fixedly connected to one side of the workbench (311) far away from the ground, and an output shaft axis of the first air cylinder (312) is horizontally arranged, the output end of the first air cylinder (312) is fixedly connected with a mechanical arm (313), a feeding mechanism (34) is additionally arranged, the feeding mechanism (34) comprises an expansion rod (341), the axis of an output shaft of the expansion rod (341) is vertically arranged, the output end of the expansion rod (341) is fixedly connected with a feeding table (342), a plurality of second air cylinders (314) parallel to the first air cylinder (312) are additionally arranged, the second air cylinders (314) are all fixedly connected to the workbench (311), the output end of the second air cylinder (314) is fixedly connected with a jack (315), and the jack (315) is vertically arranged.

3. The bridge maintenance replacing equipment with the automatic support replacing function is characterized in that lifting mechanisms (5) are arranged on the sides, close to the ground, of the first suspension rod (11) and the second suspension rod (21), the lifting mechanisms (5) comprise third air cylinders (51), the axes of output shafts of the third air cylinders (51) are vertically arranged, the third air cylinders (51) are fixedly connected to the first vehicle body (1) and the second vehicle body (2), the output ends of the third air cylinders (51) are hinged to sliding blocks (52), and the sliding blocks (52) are slidably connected to the first suspension rod (11) and the second suspension rod (21).

4. The bridge maintenance replacing equipment with the automatic support replacing function is characterized in that a driving mechanism (6) is arranged on one side, close to the ground, of the sliding rail (41), the driving mechanism (6) comprises a rack (61) parallel to the sliding rail (41), the rack (61) is fixedly connected to the sliding rail (41), a gear (62) is meshed with the rack (61), the gear (62) is fixedly connected with an output end of a second motor (63), an output shaft axis of the second motor (63) is horizontally arranged, and the second motor (63) is fixedly connected to a third vehicle body (3).

5. The bridge maintenance and replacement equipment with the automatic support replacement function as claimed in claim 1, wherein the first pulley (111) is a double-groove pulley, the number of the first pulling cables (12) is two, and the two first pulling cables (12) are respectively arranged on opposite sides of the counterweight block (4).

6. The bridge maintenance and replacement equipment with the automatic support replacement function according to claim 1, wherein a chassis (7) is rotatably connected to the sides, close to the ground, of the first vehicle body (1) and the second vehicle body (2).

7. Bridge maintenance and replacement equipment with automatic pedestal replacement according to claim 1, characterized in that one end of the slide rail (41) close to the auxiliary plate (43) is fixedly connected with a hook (42).

8. The bridge maintenance replacement equipment with automatic support replacement of claim 2, characterized in that a collection box (316) is arranged on the extension line of the output shaft axis of the first cylinder (312), and the collection box (316) is fixedly connected to the working table (311).

9. The bridge maintenance replacing equipment with the automatic support replacing function according to claim 1, wherein the first reel (14), the second reel (15) and the third reel (24) are fixedly connected with the output end of a third motor (8) respectively, and the third motor (8) is fixed on the first vehicle body (1) or the second vehicle body (2) respectively.

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