Fixing device for box girder reinforcement cage

Abstract

The utility model discloses a fixing device for a box girder reinforcement cage, which comprises a bottom plate, a support rod, a spring shock absorber and a self-locking universal wheel, the support rod is fixed at the bottom of the bottom plate, the spring shock absorber is arranged at the lower end of the support rod, the self-locking universal wheel is arranged on the spring shock absorber and below the bottom plate, and the self-locking universal wheel is fixed on the bottom plate. A sliding block is slidably connected to the upper end in the bottom plate, a distance changing mechanism is arranged on the bottom plate and connected with the sliding block, a guide baffle is fixedly connected to the side wall end of the sliding block, and a driving mechanism is arranged on the side wall of the bottom plate and connected with the distance changing mechanism. The pitch changing mechanism comprises a limiting rotating ring, a driving rotating disc, a driving sliding groove and a sliding shaft. The driving mechanism comprises an outer gear ring, a driving gear and a gear motor. The utility model belongs to the technical field of box girder reinforcement cage fixing, and particularly relates to a fixing device for a box girder reinforcement cage.

Description

Technical Field

[0001] The utility model belongs to the technical field of fixing the steel cage of box girders, and specifically refers to a fixing device for the steel cage of box girders. Background Technique

[0002] The steel cage is woven by longitudinal steel bars and transverse steel bars to form a dense steel bar grid, and then fixed inside the concrete structure with steel bars, mainly playing a role in tensile resistance to improve the tensile strength of concrete. The steel cage of box girders is the steel cage used in bridge engineering. The pre-welded steel cage is moved to the bearing platform of the bridge foundation by hoisting for fixing.

[0003] In the actual hoisting and installation process, since most of the steel cages for box girders are relatively large in size, the traditional method is to manually push and pull the hoisted steel cage on the bearing platform for displacement docking. Due to the long hoisting distance, it is difficult for the crane operator to align the steel cage with the predetermined position. In this process, not only multiple people are required to operate, in addition, the steel cage is relatively large in size, and manual operation is not only dangerous, but also difficult due to the shaking during hoisting and the difficulty of alignment. Therefore, we propose a fixing device for the steel cage of box girders to solve the above problems. Content of the Utility Model

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a fixing device for the steel cage of box girders, which effectively solves the problems that manual calibration is required and it is difficult to align when installing and fixing the existing steel cage of box girders at present, and solves the problems of easy shaking and danger during hoisting alignment.

[0005] The technical solution adopted by the utility model is as follows: A fixing device for the steel cage of box girders proposed by the utility model includes a bottom plate, a support rod, a spring shock absorber and a self-locking universal wheel. The support rod is fixed to the bottom of the bottom plate. The spring shock absorber is arranged at the lower end of the support rod. The self-locking universal wheel is arranged on the spring shock absorber and below the bottom plate. A slider is slidably connected to the upper end inside the bottom plate. A variable distance mechanism is arranged on the bottom plate and is connected to the slider. A guiding baffle is fixedly connected to the side wall end of the slider. A driving mechanism is arranged on the side wall of the bottom plate and is connected to the variable distance mechanism.

[0006] As an improvement of this solution, the variable distance mechanism includes a limit rotating ring, a driving turntable, a driving chute and a sliding shaft. The limit rotating ring is rotatably connected to the upper end of the bottom plate. The driving turntable is fixed to the lower end of the limit rotating ring and is rotatably connected to the bottom plate. The driving chutes are evenly distributed on the driving turntable along the circumferential direction. The sliding shaft is fixed to the upper end of the slider and is slidably connected in the driving chute.

[0007] As an improvement of this solution, a support plate is fixed on the side wall of the bottom plate, a bracket is provided on the support plate, and a handle is rotatably connected to the side wall of the bracket.

[0008] As an improvement of this solution, the driving mechanism includes an external gear ring, a driving gear and a reduction motor. The external gear ring is fixed on the side wall of the driving turntable. The driving gear is rotatably connected to the support plate, and the side of the driving gear close to the bottom plate meshes with the external gear ring. A reduction motor is provided on the bracket, and the output shaft of the reduction motor penetrates through the bracket and is connected to the driving gear.

[0009] As an improvement of this solution, a button is provided on the handle, and a fixing frame is fixedly connected to the connection part of the guiding baffle and the slider.

[0010] As an improvement of this solution, the external gear ring is arranged between the bottom plate and the driving turntable, the slider is arranged between the driving turntable and the bottom plate, the driving turntable is arranged parallel to the bottom plate, and the guiding baffle is arranged perpendicular to the slider.

[0011] As an improvement of this solution, the bottom plate is arranged as a ring with a U-shaped cross section, the limiting rotating ring is arranged as a ring with an L-shaped cross section, and the guiding baffle is arranged as an arc-shaped plate.

[0012] As an improvement of this solution, the driving turntable is arranged as an O shape, the cross section of the slider is arranged as a T shape, and the driving chute is arranged as a centripetal arc-shaped through hole.

[0013] The beneficial effects achieved by the present utility model with the above structure are as follows:

[0014] 1. A guiding baffle with variable pitch is provided. The guiding baffle can guide the box girder steel cage when it is hoisted and lowered, and cooperate with the variable pitch mechanism to adjust the distance between each group of guiding baffles, so as to meet the guiding and fixing of steel cages of different sizes, improve the alignment accuracy, and reduce the risk of danger caused by the shaking of the steel cage;

[0015] 2. The whole adopts a movable structure design. By pulling the handle, the whole device moves under the action of self-locking universal wheels. Cooperating with the guiding baffle with variable pitch, single-person operation can be realized, which not only ensures safety, but also reduces labor costs, and realizes precise operation, improving the practicability of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the overall structural schematic diagram of a fixing device for a box girder steel cage proposed by the present utility model;

[0017] Figure 2 is the cross-sectional view of a fixing device for a box girder steel cage proposed by the present utility model;

[0018] Figure 3 Internal structural schematic diagram of a fixing device for a box girder steel reinforcement cage proposed by the present utility model;

[0019] Figure 4 Internal schematic diagram of the variable pitch mechanism components in this embodiment.

[0020] Among them, 1. Bottom plate; 2. Support rod; 3. Spring shock absorber; 4. Self-locking universal wheel; 5. Slide block; 6. Variable pitch mechanism; 7. Guide baffle; 8. Driving mechanism; 9. Limit rotating ring; 10. Driving turntable; 11. Driving chute; 12. Slide shaft; 13. Support plate; 14. Bracket; 15. Handle; 16. External gear ring; 17. Driving gear; 18. Reduction motor; 19. Button; 20. Fixed frame.

[0021] The accompanying drawings are used to provide further understanding of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model, and do not constitute a limitation to the present utility model. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments; based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0023] As Figure 1 、 Figure 2 、 Figure 3 and Figure 4 shown, a fixing device for a box girder steel reinforcement cage proposed by the present utility model includes a bottom plate 1, a support rod 2, a spring shock absorber 3 and a self-locking universal wheel 4. The support rod 2 is fixed to the bottom of the bottom plate 1. The spring shock absorber 3 is arranged at the lower end of the support rod 2. The self-locking universal wheel 4 is arranged on the spring shock absorber 3 and below the bottom plate 1. The upper end inside the bottom plate 1 is slidably connected with a slide block 5. A variable pitch mechanism 6 is arranged on the bottom plate 1, and the variable pitch mechanism 6 is connected with the slide block 5. A guide baffle 7 is fixedly connected to the side wall end of the slide block 5. A driving mechanism 8 is arranged on the side wall of the bottom plate 1, and the driving mechanism 8 is connected with the variable pitch mechanism 6.

[0024] In order to realize the guiding function of adapting to the fixation of steel reinforcement cages of different sizes, the variable pitch mechanism 6 includes a limit rotating ring 9, a driving turntable 10, a driving chute 11 and a slide shaft 12. The limit rotating ring 9 is rotatably connected to the upper end of the bottom plate 1. The driving turntable 10 is fixed to the lower end of the limit rotating ring 9 and is rotatably connected with the bottom plate 1. The driving chute 11 is evenly distributed on the driving turntable 10 along the circumferential direction. The slide shaft 12 is fixed to the upper end of the slide block 5 and is slidably connected in the driving chute 11.

[0025] To improve the stability of the guiding baffle 7, a support plate 13 is fixed on the side wall of the bottom plate 1. A bracket 14 is provided on the support plate 13, and a handle 15 is rotatably connected to the side wall of the bracket 14.

[0026] To realize the adjustment of the spacing between the guiding baffles 7 in each group, the driving mechanism 8 includes an external gear ring 16, a driving gear 17 and a reduction motor 18. The external gear ring 16 is fixed on the side wall of the driving turntable 10. The driving gear 17 is rotatably connected to the support plate 13, and the side of the driving gear 17 close to the bottom plate 1 meshes with the external gear ring 16. A reduction motor 18 is provided on the bracket 14, and the output shaft of the reduction motor 18 penetrates through the bracket 14 and is connected to the driving gear 17.

[0027] As Figure 1 and Figure 3 shown, a button 19 is provided on the handle 15, and a fixing frame 20 is fixedly connected to the connection part between the guiding baffle 7 and the slider 5; the external gear ring 16 is arranged between the bottom plate 1 and the driving turntable 10, the slider 5 is arranged between the driving turntable 10 and the bottom plate 1, the driving turntable 10 is arranged parallel to the bottom plate 1, and the guiding baffle 7 is arranged perpendicular to the slider 5.

[0028] The bottom plate 1 is arranged as a circular ring with a U-shaped cross-section, the limiting rotating ring 9 is arranged as a circular ring with an L-shaped cross-section, and the guiding baffle 7 is arranged as an arc-shaped plate; the driving turntable 10 is arranged as an O-shaped, the cross-section of the slider 5 is arranged as a T-shaped, and the driving chute 11 is arranged as a centripetal arc-shaped through hole.

[0029] During specific use, the whole device is pulled by grasping the handle 15. During the movement, the spring shock absorber 3 is used for shock absorption, and the self-locking universal wheel 4 is locked after reaching the predetermined position. The reduction motor 18 is turned on to drive the driving gear 17 to rotate, so that the external gear ring 16 meshing with the driving gear 17 drives the driving turntable 10 to rotate. As the driving turntable 10 rotates, the sliding shaft 12 slidably connected to the driving chute 11 slides along the driving chute 11. At this time, the position of the sliding shaft 12 in the diameter direction of the bottom plate 1 changes, so that the slider 5 fixedly connected to the sliding shaft 12 slides out from the bottom plate 1 towards the center, driving the guiding baffle 7 to tend towards the center. After the hoisted steel reinforcement cage moves to the center position of the guiding baffle 7, it descends and enters the middle of each group of guiding baffles 7 along the inclined surface at the upper end of the guiding baffle 7. Then, the reduction motor 18 is continuously turned on so that the slider 5 extends until the guiding baffle 7 keeps the steel reinforcement cage in a vertical position. At this time, the deviation between the bottom of the steel reinforcement cage and the predetermined fixed point is less than one centimeter. After the steel reinforcement cage gradually descends into the bearing platform, the reduction motor 18 is reversed to separate each group of guiding baffles 7, and then the whole device can be removed from the upper end of the steel reinforcement cage by slightly lifting the bottom plate 1 upwards. The above is the use process of the fixing device for the box girder steel reinforcement cage.

[0030] The above description of the present utility model and its implementation manners is not restrictive. What is shown in the drawings is only one of the implementation manners of the present utility model, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and design, without creative efforts, structural manners and embodiments similar to the technical solution without departing from the gist of the creation of the present utility model, they shall fall within the protection scope of the present utility model.

Claims

1. A fixing device for a box girder reinforcement cage, comprising a base plate (1), a support rod (2), a spring shock absorber (3) and a self-locking universal wheel (4), wherein the support rod (2) is fixed to the bottom of the base plate (1), the spring shock absorber (3) is arranged at the lower end of the support rod (2), and the self-locking universal wheel (4) is arranged on the spring shock absorber (3) and arranged below the base plate (1), characterized in that: A slider (5) is slidably connected to the upper end of the base plate (1), a pitch-changing mechanism (6) is provided on the base plate (1), and the pitch-changing mechanism (6) is connected to the slider (5), a guide baffle (7) is fixedly connected to the side wall end of the slider (5), a driving mechanism (8) is provided on the side wall of the base plate (1), and the driving mechanism (8) is connected to the pitch-changing mechanism (6).

2. A fixing device for a box girder reinforcement cage according to claim 1, characterized in that: The pitch-changing mechanism (6) comprises a limit swivel (9), a driving turntable (10), a driving slide groove (11) and a sliding shaft (12); the limit swivel (9) is rotatably connected to the upper end of the base plate (1); the driving turntable (10) is fixed to the lower end of the limit swivel (9) and is rotatably connected to the base plate (1); the driving slide groove (11) is evenly distributed on the driving turntable (10) along the circumferential direction; and the sliding shaft (12) is fixed to the upper end of the slider (5) and is slidably connected to the driving slide groove (11).

3. A fixing device for a box girder reinforcement cage according to claim 2, characterized in that: A support plate (13) is fixed on the side wall of the bottom plate (1), a bracket (14) is provided on the support plate (13), and a handle (15) is rotatably connected to the side wall of the bracket (14).

4. A fixing device for a box girder reinforcement cage according to claim 3, characterized in that: The driving mechanism (8) comprises an outer gear ring (16), a driving gear (17) and a reduction motor (18); the outer gear ring (16) is fixed on the side wall of the driving turntable (10); the driving gear (17) is rotatably connected to the support plate (13); and the side of the driving gear (17) close to the bottom plate (1) is meshed with the outer gear ring (16); the bracket (14) is provided with a reduction motor (18), and the output shaft of the reduction motor (18) passes through the bracket (14) and is connected to the driving gear (17).

5. A fixing device for a box girder reinforcement cage according to claim 4, characterized in that: The handle (15) is provided with a button (19), and a fixing frame (20) is fixedly connected to the connection between the guide baffle (7) and the slide block (5).

6. A fixing device for a box girder reinforcement cage according to claim 5, characterized in that: The outer gear ring (16) is arranged between the bottom plate (1) and the driving turntable (10), the slider (5) is arranged between the driving turntable (10) and the bottom plate (1), the driving turntable (10) and the bottom plate (1) are arranged in parallel, and the guide baffle (7) and the slider (5) are arranged in a perpendicular manner.

7. A fixing device for a box girder reinforcement cage according to claim 6, characterized in that: The bottom plate (1) is arranged in the form of a circular ring with a U-shaped cross section, the limiting rotating ring (9) is arranged in the form of a circular ring with an L-shaped cross section, and the guide baffle (7) is arranged in the form of an arc-shaped plate.

8. A fixing device for a box girder reinforcement cage according to claim 7, characterized in that: The driving turntable (10) is arranged in an O-shape, the cross section of the sliding block (5) is arranged in a T-shape, and the driving sliding groove (11) is arranged in a centripetal arc-shaped through hole.

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