CN219604180U - A steel box girder splicing and pushing device - Google Patents

Abstract

The utility model belongs to the field of bridge construction, in particular to a steel box girder splicing and pushing device, comprising a steel box girder, a box body and a motor fixedly installed on one side of the box body; the output end of the motor runs through the box body and A moving plate is threadedly connected by a screw mechanism, and the number of the moving plates is set to two, and a rotating plate is connected between the two moving plates through a bearing rotation, and both sides of the top of the rotating plate are fixedly connected by a jack. Temporary pier, the bottom of the inner surface of the box is threadedly connected with a lifting plate through an adjustment mechanism, the bottom of the rotating plate is provided with a limit hole, and the top of the lifting plate is fixedly connected with a protruding rod that is compatible with the limit hole; through the screw Drive the lifting plate to move down to the bottom of the box, so that the protruding rod is out of the limit hole, so that the rotating plate, jack and temporary pier can be rotated down and stored inside the box, so that the occupied space can be reduced and it is convenient to transport And mobile, practicality is strong.

Description

A steel box girder splicing and pushing device

technical field

The utility model relates to the field of bridge construction, in particular to a splicing and pushing device for steel box girders.

Background technique

Steel box girder, also known as steel plate box girder, is a commonly used structural form of long-span bridges. It is generally used on bridges with large spans. It is called steel box girder because it looks like a box. With the continuous improvement of the level, a large number of continuous steel box girder bridges have emerged in the fields of highways, urban transportation, railways, etc., and steel box girder bridges are composed of multiple groups of steel box girders, which usually need to be jacked up after splicing and assembly. push construction.

The jacking device is usually composed of temporary piers, jacks and other structures. In actual construction, after the beam body is processed in sections and connected longitudinally into a whole, force is applied through horizontal jacks, and the The beam is pushed forward section by section, and the jacking device usually needs to be transported to the construction site for installation when the bridge is being pushed forward.

Since the jacking device usually has a horizontal drive and a vertical drive, it is usually large in size and takes up a lot of space when it is transported. However, the existing steel box girder jacking device cannot be adjusted, so the occupied space cannot be reduced , it is not convenient for transportation, therefore, a steel box girder splicing and pushing device is proposed to solve the above problems.

Utility model content

In order to make up for the deficiencies of the prior art and solve the above problems, the utility model proposes a splicing and pushing device for steel box girders.

The technical scheme adopted by the utility model to solve its technical problems is: a steel box girder splicing jacking device described in the utility model, comprising a steel box girder, a box body and a motor fixedly installed on one side of the box body; The output end of the motor runs through the box and is threadedly connected with a moving plate through a screw mechanism. There are two moving plates, and a rotating plate is connected between the two moving plates through bearings. The top of the rotating plate is Both sides are fixedly connected with temporary piers by jacks, the bottom of the inner surface of the box is threadedly connected with a lifting plate through an adjustment mechanism, the bottom of the rotating plate is provided with a limiting hole, and the top of the lifting plate is fixedly connected with a limiting hole. Protruding rods that match the holes.

Preferably, the screw mechanism includes a screw, one end of the screw is rotatably connected to the bottom of one side of the inner surface of the box through a bearing, and the output end of the motor penetrates the box and is fixedly connected to the other end of the screw, The bottom between the two walls of the box body and the front and back of the screw rod are fixedly connected with a limit rod.

Preferably, the middle parts of one side of the two moving plates are threadedly connected with the outer surface of the screw rod through threaded holes, and the front and back of one side of the moving plates are slidably connected with the outer surface of the limit rod through sliding holes.

Preferably, the adjustment mechanism includes a screw, the bottom end of the screw is rotatably connected to the front of the bottom of the box cavity through a bearing, the back of the bottom of the box cavity is fixedly connected with a vertical rod, and the front of the bottom of the lifting plate passes through The threaded hole is threadedly connected with the outer surface of the screw rod, and the back of the bottom of the lifting plate is slidably connected with the outer surface of the vertical rod through the sliding hole.

Preferably, there are several limiting holes and protruding rods.

Preferably, the top of the temporary pier is fixedly connected with an anti-slip mat, and the top of the anti-slip mat is attached to the bottom of the steel box girder.

The utility model is beneficial in that:

1. The utility model drives the lifting plate to move down to the bottom of the box through the screw rod, so that the protruding rod is separated from the limit hole on the rotating plate, so that the rotating plate, the jack and the temporary pier can be rotated downward and stored in the box. Therefore, it can reduce the occupied space, facilitate its transportation and movement, and has strong practicability;

2. The utility model can increase the frictional force of the temporary pier when pushing the steel box girder through the anti-skid pad, avoiding the slipping of the temporary pier when pushing the steel box girder, and then making the pushing construction more smooth .

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the present utility model, and those skilled in the art can also obtain other drawings according to these drawings without any creative effort.

Fig. 1 is the perspective view of the utility model;

Fig. 2 is the structural connection schematic diagram of temporary pier of the utility model;

Fig. 3 is the structural connection schematic diagram of the utility model box;

Fig. 4 is the structural connection schematic diagram of screw mandrel of the present utility model;

Fig. 5 is a schematic diagram of the structural connection of the lifting plate of the present invention.

In the figure: 1. steel box girder; 2. box body; 3. motor; 4. moving plate; 5. rotating plate; 6. jack; 7. temporary pier; 8. lifting plate; 9. limit hole; Protruding rod; 11, screw mandrel; 12, limit rod; 13, screw rod; 14, vertical rod; 15, antiskid pad.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Fig. 1-Fig. 5, a steel box girder splicing and pushing device includes a steel box girder 1, a box body 2 and a motor 3 fixedly installed on one side of the box body 2; the output end of the motor 3 runs through The box body 2 is threadedly connected with a moving plate 4 through a screw mechanism, the number of the moving plates 4 is set to two, and a rotating plate 5 is connected between the two moving plates 4 through bearings, and the top of the rotating plate 5 is Both sides of the box are fixedly connected with temporary piers 7 by jacks 6, and the bottom of the inner surface of the box body 2 is threadedly connected with a lifting plate 8 through an adjustment mechanism. The top of 8 is fixedly connected with a protruding rod 10 that is compatible with the limit hole 9; since the pusher usually has a horizontal drive and a vertical drive, and its volume is usually large, it will take up more space when it is transported. However, the existing steel box girder 1 pushing device cannot be adjusted, and thus the occupied space cannot be reduced, and it is not convenient for transportation. During work, the lifting plate 8 is driven by the screw rod 13 to move down to the bottom of the box body 2, so that the protruding rod 10 Detach from the limit hole 9 on the rotating plate 5, so that the rotating plate 5, the jack 6 and the temporary pier 7 can be rotated downwards and stored inside the box body 2, so that the occupied space can be reduced, and it is convenient to transport and move. Stronger, the front and back of the box body 2 and the both sides of the lifting plate 8 are provided with openings, because the lifting plate 8, the jack 6 and the temporary pier 7 need certain activities when they are rotated downward and stored inside the box body 2. range, through the setting of the openings, it can be avoided from being blocked, so as to facilitate the storage and processing of the temporary pier 7, which has strong practicability.

The screw mechanism includes a screw rod 11, one end of the screw rod 11 is rotationally connected to the bottom of one side of the inner surface of the casing 2 through a bearing, and the output end of the motor 3 runs through the casing 2 and is connected to the other end of the screw rod 11. One end is fixedly connected, and the bottom between the two walls of the box body 2 and the front and back of the screw rod 11 are fixedly connected with a limit rod 12; during work, the moving direction of the movable plate 4 can be limited by the limit rod 12 At the same time, the support force to the moving plate 4 can be enhanced through the setting of the two limit rods 12, thereby improving the stability of the moving plate 4.

The middle parts on one side of the two moving plates 4 are threadedly connected to the outer surface of the screw mandrel 11 through threaded holes, and the front and back sides on one side of the moving plates 4 are slidably connected to the outer surface of the stop rod 12 through sliding holes; During operation, since the two moving plates 4 are synchronous and move in the same direction when the screw rod 11 rotates, the same distance will always be maintained between the two moving plates 4 .

The adjustment mechanism includes a screw 13, the bottom of the screw 13 is rotationally connected with the front of the bottom of the inner cavity of the box body 2 through a bearing, the back of the inner cavity bottom of the box body 2 is fixedly connected with a vertical rod 14, and the lifting plate The front of the bottom of 8 is threadedly connected with the outer surface of the screw rod 13 through a threaded hole, and the back of the bottom of the lifting plate 8 is slidably connected with the outer surface of the vertical rod 14 through a slide hole; during work, the top of the screw rod 13 is fixedly connected with a screwdriver It is convenient for construction personnel to operate the screw rod 13 to rotate by twisting hands, which is more convenient to use.

The number of the limiting holes 9 and the protruding rods 10 are all provided with several; when working, the stability of the device can be enhanced by the arrangement of a plurality of limiting holes 9 and protruding rods 10 .

The top of the temporary pier 7 is fixedly connected with an anti-slip pad 15, and the top of the anti-slip pad 15 fits the bottom of the steel box girder 1; during work, the temporary pier 7 can be added to the top of the steel box girder 1 through the anti-slip pad 15. The frictional force during pushing can prevent the temporary pier 7 from slipping when pushing the steel box girder 1, thereby making the pushing construction more smooth.

Working principle, because the jacking device usually has a horizontal drive and a vertical drive, and its volume is usually large, it will take up more space when it is transported, but the existing steel box girder 1 jacking device cannot be adjusted, and thus The occupied space cannot be reduced, and it is not convenient for transportation. Because the bridge construction needs to use the jacking device, and before the steel box girder 1 is pushed, the jacking device needs to be transported to the construction site. When the jacking device needs to be transported , first turn the screw to drive the screw 13 to rotate counterclockwise, and then drive the lifting rod to move downward until it moves to the bottom position of the box body 2. At this time, the protruding rod 10 on the lifting plate 8 has completely disengaged from the limit hole 9 And apart from rotating plate 5 far away, now rotating plate 5, jack 6 and temporary pier 7 are all rotated downwards, and jack 6 and temporary pier 7 of making all enter casing 2 inside, thereby reduce the occupied space of this device, convenient For transportation, when the device is transported to the construction site for installation, when the pushing construction needs to be carried out, the rotating plate 5 is turned upward so that the jack 6 and the temporary pier 7 are turned upward to the original position, and then the screwdriver is turned clockwise to drive the screw 13 Rotate to make the lifting plate 8 move upward until the lifting plate 8 moves to the highest point of the screw rod 13. At this time, the protruding rod 10 on the lifting plate 8 will completely enter the limit hole 9, thereby supporting the rotating plate 5 and the position limit. Turn the function of the plate 5, then start the jack 6 to drive the temporary pier 7 to move upward until the anti-skid pad 15 is completely attached to the steel box girder 1, and then start the motor 3 to drive the screw 11 to rotate clockwise, thereby pushing the steel box girder 1 to the right Move sideways until the moving plate 4 moves to the position in contact with the right wall of the box body 2, control the jack 6 to drive the temporary pier 7 to move down and away from the steel box girder 1, and then control the motor 3 to rotate counterclockwise to drive the screw 11 to rotate, so that the moving The plate 4 and the temporary pier 7 move to the left until the moving plate 4 on the left side is in contact with the left wall of the box body 2, and the pushing operation can be repeated according to the above operation.

The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the industry should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model.

Claims (6)

1. A steel box girder splicing pushing device comprises a steel box girder (1), a box body (2) and a motor (3) fixedly arranged at one side of the box body (2); the method is characterized in that: the output of motor (3) runs through box (2) and has movable plate (4) through screw mechanism threaded connection, the quantity of movable plate (4) is provided with two, two be connected with rotor plate (5) through the bearing rotation between movable plate (4), the both sides at rotor plate (5) top are all through jack (6) fixedly connected with temporary mound (7), the bottom of box (2) internal surface is through adjustment mechanism threaded connection has lifter plate (8), spacing hole (9) have been seted up to the bottom of rotor plate (5), the top fixedly connected with of lifter plate (8) with protruding pole (10) of spacing hole (9) looks adaptation.

2. The steel box girder splicing pushing device according to claim 1, wherein: the screw thread mechanism comprises a screw rod (11), one end of the screw rod (11) is rotationally connected with the bottom of one side middle part of the inner surface of the box body (2) through a bearing, the output end of the motor (3) penetrates through the box body (2) and is fixedly connected with the other end of the screw rod (11), and a limiting rod (12) is fixedly connected with the bottom between two walls of the box body (2) and located on the front side and the back of the screw rod (11).

3. The steel box girder splicing pushing device according to claim 2, wherein: the middle parts of one side of the two movable plates (4) are in threaded connection with the outer surface of the screw rod (11) through threaded holes, and the front and the back of one side of the movable plates (4) are both in sliding connection with the outer surface of the limiting rod (12) through sliding holes.

4. A steel box girder splicing pushing device according to claim 3, wherein: the adjusting mechanism comprises a screw rod (13), the bottom end of the screw rod (13) is rotationally connected with the front surface of the bottom of the inner cavity of the box body (2) through a bearing, the back of the bottom of the inner cavity of the box body (2) is fixedly connected with a vertical rod (14), the front surface of the bottom of the lifting plate (8) is in threaded connection with the outer surface of the screw rod (13) through a threaded hole, and the back of the bottom of the lifting plate (8) is in sliding connection with the outer surface of the vertical rod (14) through a sliding hole.

5. The steel box girder splicing pushing device according to claim 4, wherein: the number of the limiting holes (9) and the number of the protruding rods (10) are all provided with a plurality of limiting holes.

6. The steel box girder splicing pushing device according to claim 5, wherein: the top of interim mound (7) fixedly connected with slipmat (15), the top of slipmat (15) is laminated with the bottom of steel case roof beam (1).