Fabricated bridge construction auxiliary device and working method

Abstract

The invention provides an assembly type bridge construction auxiliary device and a working method, and belongs to the technical field of assembly type bridge construction auxiliary devices.The assembly type bridge construction auxiliary device structurally comprises a movable pushing seat set, two sliding rails are vertically arranged on the top face of the movable pushing seat set, a plurality of sliders are arranged on the two sliding rails, a lifting plate is connected between the sliders, and the lifting plate is provided with a lifting groove; a nut torsion auxiliary mechanism is transversely arranged on the front side face of the lifting plate, and according to the assembled bridge construction auxiliary device, through the liftable adjusting design of the nut torsion auxiliary mechanism, a nut sleeve can be more conveniently and horizontally aligned with the position where a nut is located; the nut sleeve and the nut are sleeved through displacement of a pedal on the movable push seat set, operation is quite easy and convenient, in addition, primary locking of the nut is achieved by driving the main gear on the driving end to rotate to drive the tooth opening rotating rod to rotate so that the nut sleeve can lock the nut, operation is easy and fast, manual operation is not needed, and time and labor are saved.

Description

Technical Field

[0001] The invention relates to an auxiliary device for construction of an assembled bridge and a working method, belonging to the technical field of auxiliary devices for construction of assembled bridges. Background Art

[0002] Prefabricated bridges are constructed differently from traditional on-site bridge construction methods. For prefabricated bridges, some or all of the components of the prefabricated bridges are processed and formed in a prefabricated component factory, then transported to the construction site for hoisting and splicing into the main body of the bridge. During splicing, bolts and nuts cast together with the prefabricated bridge are used to connect and fix the two prefabricated bridges.

[0003] When locking nuts, because the nuts required for bridges are large, the overall weight of the nut sleeve plus the quick-connect handle is very large. The user uses a nut sleeve wrench to manually twist the nut, and one nut needs to be rotated dozens of times, which is time-consuming, labor-intensive, and difficult to operate. When a cloth strip is used to pull the nut to tighten the nut, it is often encountered that the threads of some bolts will slightly slip during casting or splicing, and the nut will be stuck, and the nut cannot be pulled with a cloth strip. In view of the above shortcomings, the present invention proposes an assembled bridge construction auxiliary device and a working method. Summary of the invention

[0004] In view of the deficiencies in the prior art, the object of the present invention is to provide an auxiliary device and working method for the construction of an assembled bridge to solve the existing problems.

[0005] In order to achieve the above-mentioned object, the present invention is implemented by the following technical scheme: an assembled bridge construction auxiliary device, the structure of which includes a movable push seat group, and two slide rails are vertically arranged on the top surface of the movable push seat group, and a plurality of sliders are arranged on the two slide rails, and a lifting plate is connected between each of the sliders, and a nut twisting auxiliary mechanism is horizontally arranged on the front side of the lifting plate; The nut twisting auxiliary mechanism includes a bottom plate, and a twisting assembly is transversely arranged at the upper end of the front side of the bottom plate, and a driving end is movably engaged at the lower end of the right side of the twisting assembly, and a first pull-down assembly and a second pull-down assembly are symmetrically arranged on the left and right sides of the driving end, and a push-up assembly is arranged at the lower end of the driving end, and the lower end of the push-up assembly is fixed to the lower end of the bottom plate, and a sleeve rod is movably sleeved at the tail of the left end of the twisting assembly, and a nut sleeve is movably sleeved at the tail of the left end of the sleeve rod; The first pull-down component includes a rotating fixed seat, and a pressing component is horizontally sleeved on the rotating fixed seat, and a clamping component is arranged on the right end of the pressing component. The left side of the clamping component is movably abutted and nested with the right side of the rotating fixed seat, and the tail of the left end of the pressing component is movably pressed against the pressing fixed seat, and the pressing fixed seat is fixedly connected to the right side of the driving end. The first pull-down component has the same structure as the second pull-down component.

[0006] A further improvement is that the movable push seat group includes a movable base, and a plurality of first sliding rods are arranged at laterally intervals on the top surface of the movable base, and a push seat is arranged in a movable sleeve between each first sliding rod, a plurality of rollers for movably resisting against the bottom surface of the push seat are arranged longitudinally in the middle of the top surface of the movable base, a foot push plate is arranged on the right side of the top surface of the push seat, a stop block is arranged on the left movable sleeve between the movable base and the push seat for preventing sliding, and a plurality of wheels are arranged on the bottom surface of the movable base.

[0007] A further improvement is that the torsion assembly includes a first rotating sleeve and a second rotating sleeve, and a toothed rotating rod is threadedly connected between the first rotating sleeve and the second rotating sleeve, a sleeve rod quick connector is provided at the left tail of the toothed rotating rod, and a torque wrench is movably and quickly connected to the right tail of the toothed rotating rod.

[0008] A further improvement is that the driving end includes a slide plate, and a plurality of slide blocks are arranged on the bottom surface of the slide plate, and a second slide bar is movably sleeved between two longitudinally aligned slide blocks, and a main gear assembly is arranged on the front side of the slide plate; The driving main gear assembly includes a rotating shaft seat, and the driving main gear and the driven bevel gear are respectively arranged on the left and right sides of the rotating shaft seat, and a motor is meshed on the right side of the driven bevel gear, and the motor is provided with a driving bevel gear meshed with the driven bevel gear.

[0009] As a further improvement, the rotating fixed seat comprises a pressure rod seat, a bearing is embedded in the middle of the pressure rod seat, and an embedding hole is opened on the side of the longitudinal center line of the right side surface of the rotating fixed seat.

[0010] A further improvement is that the pressing assembly includes an L-shaped pressing rod, a pressing handle is provided on the right side of the L-shaped pressing rod, and a pressing wheel is provided on the left tail of the L-shaped pressing rod.

[0011] As a further improvement, the embedding assembly includes an embedding seat, and a movable groove is provided at the upper end of the left side surface of the embedding seat, and an embedding rod and a first spring are movable in the movable groove, and a pull handle is provided at the tail of the right end of the embedding rod; When the pressure handle presses down and rotates the L-shaped pressure rod, the embedded rod will swing downward along an arc trajectory. Under the action of the first spring, the tail of the left end of the embedded rod will automatically engage with the embedding hole, so that the main gear and the tooth mouth rotating rod are disengaged.

[0012] As a further improvement, a pressing groove for supporting the movement of the pressing wheel is provided at the upper end of the pressing fixing seat, and the bottom of the pressing groove is arranged horizontally.

[0013] A further improvement is that the push-up assembly includes an push-up seat, and a plurality of stabilizing slide bars are vertically spaced apart on the bottom surface of the push-up seat, and each stabilizing slide bar is sleeved with a second spring, and a stabilizing slide bar sleeve seat is movably sleeved at the lower end between each of the stabilizing slide bars.

[0014] A further improvement is that the torque wrench is prior art and the structure is not described in detail here.

[0015] In addition, the present invention also provides a working method of the above-mentioned prefabricated bridge construction auxiliary device, and the working method is as follows: When the two prefabricated bridges are fitted together, first screw the nuts on the connecting screws of the prefabricated bridges, then put the nut sleeves on the nuts and quickly connect the sleeve rods, then move the nut torque auxiliary mechanism to the corresponding position of the sleeve rod, and use the sliders to raise and lower the horizontal height of the nut torque auxiliary mechanism on the two slide rails, so that the sleeve rod quick connector is horizontally aligned with the right end of the sleeve rod, and then use the foot pedal and foot push plate to make the nut torque auxiliary mechanism horizontally shifted as a whole to quickly fit the sleeve rod quick connector with the sleeve rod to complete the installation.

[0016] When the nut twisting auxiliary mechanism is locking the nut, the motor rotates, driving the bevel gear, the driven bevel gear, and the rotating shaft seat to drive the main gear to drive the tooth mouth rotating rod to rotate on the first rotating sleeve seat and the second rotating sleeve seat, and the linkage sleeve rod drives the nut sleeve to rotate and lock the nut, thereby completing the initial locking of the nut.

[0017] When the nut needs to be tightened according to the standard torque, the first pull-down assembly and the second pull-down assembly are first pulled down synchronously. At this time, the embedded rod will swing downward in an arc trajectory and automatically insert into the embedded hole to be locked and positioned, so that the main gear assembly is driven to descend and position as a whole, so that the engagement between the main gear and the tooth rotation rod is disengaged, and then the torque wrench quick connector is put on the right end of the tooth rotation rod, and the manual downward torque wrench is used to reinforce and lock the nut according to the standard torque.

[0018] The beneficial effects of the present invention are: The present invention provides an assembled bridge construction auxiliary device and a working method. The assembled bridge construction auxiliary device is formed by a structural combination design of a mobile push seat group, a slide rail, a slider, a lifting plate and a nut twisting auxiliary mechanism. The device allows the nut sleeve to be more conveniently horizontally aligned with the position of the nut through the lifting and lowering adjustment design of the nut twisting auxiliary mechanism. The fitting of the nut sleeve and the nut is achieved by the pedal displacement on the mobile push seat group. The operation is very simple. In addition, the initial locking of the nut is achieved by driving the main gear on the driving end to rotate and drive the tooth mouth rotating rod to rotate so that the nut sleeve is locked to the nut. The operation is simple and quick, and no manual operation is required. The operation saves time and effort. When the nut is reinforced with standard torque, the torque wrench is quickly installed on the right end of the tooth rotating rod, and the two pull-down components are simply pressed down synchronously to move the driving end downward, so as to realize the rapid engagement and disengagement of the main gear and the tooth rotating rod. Thus, a torque wrench tool specially for standard torque reinforcement of nuts is formed through the rapid splicing of the nut sleeve, sleeve rod, tooth rotating rod and torque wrench. The torque wrench tool has a horizontal and stable support function during operation, so that the torque wrench tool will not be skewed or unstable when it is manually stressed and pressurized, thereby making the torque wrench more stable when pressurizing and twisting the nut to reinforce it. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram of an assembled bridge construction auxiliary device of the present invention; Figure 2 It is a structural schematic diagram of the nut twisting auxiliary mechanism of the present invention; Figure 3 It is a schematic diagram of the structure of the torsion assembly of the present invention; Figure 4 This is a schematic diagram of the driving end structure of the present invention; Figure 5 This is a schematic diagram of the structure of the first pull-down component of the present invention; Figure 6 It is a right side view of the rotating fixing seat and the pressing fixing seat of the present invention; Figure 7 It is a schematic diagram of the structure of the card embedding component of the present invention; Figure 8 It is a schematic diagram of the structure of the push-up assembly of the present invention. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0021] See also Figure 1-Figure 8The present invention provides an assembled bridge construction auxiliary device and a working method: the structure includes a movable push seat group 1, and two slide rails 2 are vertically arranged on the top surface of the movable push seat group 1, and a plurality of sliders 3 are arranged on the two slide rails 2, and a lifting plate 4 is connected between each of the sliders 3, and a nut twisting auxiliary mechanism 5 is transversely arranged on the front side of the lifting plate 4, and the nut twisting auxiliary mechanism 5 includes a bottom plate 51, and a twisting component 52 is transversely arranged on the upper end of the front side of the bottom plate 51, and a driving end 53 is movably engaged at the lower right end of the twisting component 52, and a first pull-down component 54 and a second pull-down component 55 are symmetrically arranged on the left and right sides of the driving end 53, and a push-up component 56 is arranged at the lower end of the driving end 53, and The lower end of the push-up component 56 is fixedly connected to the lower end of the base plate 51, and the left end of the torsion component 52 is movably sleeved with a sleeve rod 57, and the left end of the sleeve rod 57 is movably sleeved with a nut sleeve 58. The first pull-down component 54 includes a rotating fixed seat 541, and a pressing component 542 is horizontally sleeved on the rotating fixed seat 541, and a clamping component 543 is provided at the right end of the pressing component 542. The left side of the clamping component 543 is movably abutted and nested with the right side of the rotating fixed seat 541, and the left end of the pressing component 542 is movably pressed against and pressed by a pressing fixing seat 544, and the pressing fixing seat 544 is fixedly connected to the right side of the driving end 53. The first pull-down component 54 and the second pull-down component 55 have the same structure.

[0022] The mobile push seat group 1 includes a mobile base 11, and a plurality of first slide bars 12 are arranged at intervals laterally on the top surface of the mobile base 11, and a push seat 13 is movably sleeved between each first slide bar 12, a plurality of rollers for movably resisting against the bottom surface of the push seat 13 are longitudinally arranged in the middle of the top surface of the mobile base 11, a foot push plate 14 is arranged on the right side of the top surface of the push seat 13, a stop block 15 for anti-slip is movably sleeved on the left side between the mobile base 11 and the push seat 13, and a plurality of wheels 16 are arranged on the bottom surface of the mobile base 11.

[0023] The torsion assembly 52 includes a first rotating sleeve 521 and a second rotating sleeve 522, and a toothed rotating rod 523 is threadedly connected between the first rotating sleeve 521 and the second rotating sleeve 522. A sleeve rod quick connector 524 is provided at the left tail of the toothed rotating rod 523, and a torque wrench 525 is movably and quickly sleeved at the right tail of the toothed rotating rod 523.

[0024] The driving end 53 includes a slide plate 531, and a plurality of sliders 532 are arranged on the bottom surface of the slide plate 531, and a second slide rod 533 is movably sleeved between two longitudinally aligned sliders 532, and a driving main gear assembly 534 is arranged on the front side of the slide plate 531, and the driving main gear assembly 534 includes a rotating shaft seat 5341, and a driving main gear 5342 and a driven bevel gear 5343 are respectively arranged on the left and right sides of the rotating shaft seat 5341, and a motor 5344 is meshed on the right side of the driven bevel gear 5343, and a driving bevel gear meshed with the driven bevel gear 5343 is arranged on the motor 5344.

[0025] The rotating fixed seat 541 includes a pressure rod seat 5411 , a bearing 5412 is embedded in the middle of the pressure rod seat 5411 , and an embedding hole 5413 is opened on the side of the longitudinal center line of the right side of the rotating fixed seat 541 .

[0026] The pressing assembly 542 includes an L-shaped pressing rod 5421, a pressing handle 5422 is provided on the right side of the L-shaped pressing rod 5421, and a pressing wheel 5423 is provided on the left tail of the L-shaped pressing rod 5421.

[0027] The embedding assembly 543 includes an embedding seat 5431, and a movable groove 5432 is provided on the upper end of the left side surface of the embedding seat 5431, and an embedding rod 5433 and a first spring 5434 are movable in the movable groove 5432. A pull handle 5435 is provided at the right end of the embedding rod 5433. When the pressure handle 5422 presses down and rotates the L-shaped pressure rod 5421, the embedding rod 5433 will swing downward along an arc trajectory. Under the action of the first spring 5434, the left end of the embedding rod 5433 is automatically embedded in the embedding hole 5413, so that the main gear 5342 is disengaged from the tooth rotation rod 523.

[0028] A pressing groove 5441 for supporting the movement of the pressing wheel 5423 is formed at the upper end of the pressing fixing seat 544 , and the bottom of the pressing groove 5441 is arranged horizontally.

[0029] The push-up assembly 56 includes a push-up seat 561 , and a plurality of stabilizing slide bars 562 are vertically spaced apart on the bottom surface of the push-up seat 561 , and each stabilizing slide bar 562 is sleeved with a second spring 563 , and a stabilizing slide bar sleeve seat 564 is movably sleeved at the lower end of each stabilizing slide bar 562 .

[0030] Working principle: When the two prefabricated bridges are fitted together, first, nuts are screwed onto the connecting screws of the prefabricated bridges, then nut sleeves 58 are put on the nuts and the sleeve rods 57 are quickly connected, and then the nut torque assisting mechanism 5 is moved to the corresponding position of the sleeve rod 57, and the horizontal height of the nut torque assisting mechanism 5 is raised and lowered on the two slide rails 2 by means of each slider 3, so that the sleeve rod quick connector 524 is horizontally aligned with the right end of the sleeve rod 57, and then the foot pedal and foot push plate 14 are used to horizontally shift the nut torque assisting mechanism 5 as a whole to quickly fit the sleeve rod quick connector 524 with the sleeve rod 57 to complete the installation.

[0031] When the nut torque assist mechanism 5 is locking the nut, the motor 5344 is rotated, and the bevel gear, the driven bevel gear 5343, and the rotating shaft seat 5341 are driven to drive the main gear 5342 to drive the tooth mouth rotating rod 523 to rotate on the first rotating sleeve seat 521 and the second rotating sleeve seat 522, and the linkage sleeve rod 57 drives the nut sleeve 58 to rotate and lock the nut, thereby completing the initial locking of the nut.

[0032] It should be noted that the above operation requires that all nuts be initially tightened before subsequent unified standard torque tightening reinforcement. The operation can also be carried out by first installing the sleeve rod 57 and the nut sleeve 58 on the sleeve rod quick connector 524, and aligning and fitting the nut sleeve 58 with the nut in the overall movement auxiliary device. This operation is simpler, and the nut sleeve 58 and the nut are pushed to fit together using the foot pedal 14.

[0033] When the nut needs to be tightened according to the standard torque, the first pull-down component 54 and the second pull-down component 55 are first pulled down synchronously. At this time, the embedding rod 5433 will swing downward in an arc trajectory and automatically insert into the embedding hole 5413 to be embedded and positioned, so that the main gear assembly 534 is driven to descend and position as a whole, so that the main gear 5342 is disengaged from the tooth rotation rod 523, and then the torque wrench 525 is quickly connected to the right end of the tooth rotation rod 523, and the torque wrench 525 is manually pressed down to tighten the nut according to the standard torque.

[0034] It should be noted that when the torque wrench 525 is used to tighten the nut according to the standard torque, the main gear 5342 is first driven to disengage from the meshing of the toothed rotating rod 523. The main purpose is to prevent the torque from increasing if the driving end 53 is driven to rotate together, causing the torque of the torque wrench 525 on the nut to deviate and become inaccurate. When the torque wrench 525 is twisted, the toothed rotating rod 523 assists in horizontal positioning on the first rotating sleeve 521 and the second rotating sleeve 522, so the force is more stable and the torque wrench 525 will not be skewed when twisted.

[0035] When the main gear 5342 is to be driven to engage with the tooth-mouth rotating rod 523, it is only necessary to synchronously pull the handles 5435 on the first pull-down component 54 and the second pull-down component 55 by hand to disengage the embedding rod 5433 from the embedding hole 5413, and the second spring 563 on the push-up component 56 becomes tense due to the descent of the driving end 53, providing a force for the subsequent upward push of the driving end 53, so that after the embedding rod 5433 and the embedding hole 5413 are disengaged, the driving end 53 can automatically move upward to drive the main gear 5342 to automatically engage with the tooth-mouth rotating rod 523 and continue to provide an upward thrust, so that the meshing of the main gear 5342 and the tooth-mouth rotating rod 523 is more stable.

[0036] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0037] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An auxiliary device for prefabricated bridge construction, characterized in that: The structure comprises a movable push seat group (1), wherein two slide rails (2) are vertically arranged on the top surface of the movable push seat group (1), and a plurality of sliders (3) are arranged on the two slide rails (2), and a lifting plate (4) is connected between each of the sliders (3), and a nut twisting auxiliary mechanism (5) is horizontally arranged on the front side surface of the lifting plate (4); The nut twisting auxiliary mechanism (5) comprises a base plate (51), and a twisting assembly (52) is transversely arranged at the upper front end of the base plate (51), and a driving end (53) is movably engaged at the lower right end of the twisting assembly (52), and a first pull-down assembly (54) and a second pull-down assembly (55) are symmetrically arranged on the left and right sides of the driving end (53), and an upward push assembly (56) is arranged at the lower end of the driving end (53), and the lower end of the upward push assembly (56) is fixedly connected to the lower end of the base plate (51), and a sleeve rod (57) is movably sleeved at the tail of the left end of the twisting assembly (52), and a nut sleeve (58) is movably sleeved at the tail of the left end of the sleeve rod (57); The first pull-down component (54) comprises a rotating fixed seat (541), and a pressing component (542) is transversely sleeved on the rotating fixed seat (541), and a locking component (543) is arranged at the right end of the pressing component (542), and the left side of the locking component (543) is movably abutted and nested with the right side of the rotating fixed seat (541), and the left end of the pressing component (542) is movably pressed against the pressing fixed seat (544), and the pressing fixed seat (544) is fixedly connected to the right side of the driving end (53), and the first pull-down component (54) and the second pull-down component (55) have the same structure.

2. The assembly type bridge construction auxiliary device according to claim 1, characterized in that: The movable push seat assembly (1) comprises a movable base (11), and a plurality of first slide bars (12) are arranged at intervals on the top surface of the movable base (11), and a push seat (13) is movably sleeved between each of the first slide bars (12). A plurality of rollers for movably abutting against the bottom surface of the push seat (13) are longitudinally arranged in the middle of the top surface of the movable base (11), a foot push plate (14) is arranged on the right side of the top surface of the push seat (13), a stop block (15) for preventing sliding is arranged on the left side of the movable sleeve between the movable base (11) and the push seat (13), and a plurality of wheels (16) are arranged on the bottom surface of the movable base (11).

3. The assembly type bridge construction auxiliary device according to claim 2, characterized in that: The torsion assembly (52) comprises a first rotating sleeve (521) and a second rotating sleeve (522), wherein a toothed rotating rod (523) is threadedly connected between the first rotating sleeve (521) and the second rotating sleeve (522), a sleeve rod quick connector (524) is provided at the left tail of the toothed rotating rod (523), and a torque wrench (525) is movably and quickly sleeved at the right tail of the toothed rotating rod (523).

4. The assembly type bridge construction auxiliary device according to claim 3 is characterized in that: The driving end (53) comprises a slide plate (531), and a plurality of slide blocks (532) are arranged on the bottom surface of the slide plate (531), and a second slide bar (533) is movably sleeved between two longitudinally aligned slide blocks (532), and a main gear assembly (534) is arranged on the front side surface of the slide plate (531); The driving main gear assembly (534) comprises a rotating shaft seat (5341), and a driving main gear (5342) and a driven bevel gear (5343) are respectively arranged on the left and right sides of the rotating shaft seat (5341), and a motor (5344) is meshed on the right side of the driven bevel gear (5343), and the motor (5344) is provided with a driving bevel gear meshed with the driven bevel gear (5343).

5. The assembly type bridge construction auxiliary device according to claim 4 is characterized in that: The rotating fixed seat (541) comprises a pressure rod seat (5411), a bearing (5412) is embedded in the middle of the pressure rod seat (5411), and an embedding hole (5413) is opened on the side of the longitudinal center line of the right side surface of the rotating fixed seat (541).

6. The assembly type bridge construction auxiliary device according to claim 5, characterized in that: The pressing assembly (542) comprises an L-shaped pressing rod (5421), a pressing handle (5422) is provided on the right side of the L-shaped pressing rod (5421), and a pressing wheel (5423) is provided at the left tail of the L-shaped pressing rod (5421).

7. The assembly type bridge construction auxiliary device according to claim 6, characterized in that: The embedding assembly (543) comprises an embedding seat (5431), and a movable groove (5432) is provided at the upper end of the left side surface of the embedding seat (5431), and an embedding rod (5433) and a first spring (5434) are movable in the movable groove (5432), and a pull handle (5435) is provided at the tail of the right end of the embedding rod (5433); When the pressing handle (5422) presses and rotates the L-shaped pressing rod (5421), the embedding rod (5433) swings downward along an arc trajectory. Under the action of the first spring (5434), the left end of the embedding rod (5433) is automatically embedded in the embedding hole (5413), so that the main gear (5342) and the toothed rotating rod (523) are disengaged.

8. The assembly type bridge construction auxiliary device according to claim 7, characterized in that: A pressing groove (5441) for supporting the movement of the pressing wheel (5423) is formed at the upper end of the pressing fixing seat (544), and the bottom of the pressing groove (5441) is arranged horizontally.

9. The assembly type bridge construction auxiliary device according to claim 8, characterized in that: The push-up assembly (56) comprises an push-up seat (561), and a plurality of stabilizing slide bars (562) are vertically spaced apart on the bottom surface of the push-up seat (561), and each stabilizing slide bar (562) is sleeved with a second spring (563) on its rod body, and a stabilizing slide bar sleeve seat (564) is movably sleeved at the lower end of each stabilizing slide bar (562).

10. A working method using the prefabricated bridge construction auxiliary device according to any one of claims 1 to 9, characterized in that: The working method is as follows: After the two assembled bridges are fitted together, nuts are first screwed onto the connecting screws of the assembled bridges, and then nut sleeves (58) are put onto the nuts and the sleeve rods (57) are quickly connected. Then, the nut twisting auxiliary mechanism (5) is moved to the corresponding position of the sleeve rod (57), and the horizontal height of the nut twisting auxiliary mechanism (5) is raised and lowered on the two slide rails (2) by means of the sliders (3) so that the sleeve rod quick connector (524) is horizontally aligned with the right end of the sleeve rod (57). Then, the foot pedal and foot push plate (14) are used to horizontally shift the nut twisting auxiliary mechanism (5) as a whole to quickly fit the sleeve rod quick connector (524) with the sleeve rod (57) to complete the installation. When the nut twisting auxiliary mechanism (5) is locking the nut, the motor (5344) is rotated, and the bevel gear, the driven bevel gear (5343), and the rotating shaft seat (5341) are driven to drive the main gear (5342) to drive the tooth mouth rotating rod (523) to rotate on the first rotating sleeve seat (521) and the second rotating sleeve seat (522), and the linkage sleeve rod (57) drives the nut sleeve (58) to rotate and lock the nut, thereby completing the initial locking of the nut; When the nut is to be tightened according to the standard torque, the first pull-down assembly (54) and the second pull-down assembly (55) are first pulled down synchronously, and then the embedded rod (5433) will swing downward along an arc trajectory and automatically insert into the embedded hole (5413) to be locked and positioned, so that the driving main gear assembly (534) is lowered and positioned as a whole, so that the driving main gear (5342) and the tooth mouth rotating rod (523) are disengaged, and then the torque wrench (525) is quickly connected to the right end of the tooth mouth rotating rod (523), and the torque wrench (525) is manually pressed downward to tighten the nut according to the standard torque.

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