A pushing device for bridge construction

Abstract

The utility model discloses a pushing device for bridge construction, including base, the both sides symmetry of base's top surface installs the connecting plate, the inside middle penetration of connecting plate is connected with the pneumatic cylinder, the pneumatic cylinder is away from the side surface fixed connection of connecting plate and is provided with the support block, the top surface fixed mounting of support block is provided with a plurality of electric push rod, the top surface fixed connection of electric push rod is provided with the push plate, still include: the inside rotary joint of push plate is provided with a plurality of roller, wherein, the both sides penetration of roller's surface is connected with the moving cover, wherein, the side surface fixed connection of moving cover is provided with a plurality of threaded spud, through setting push plate, roller, moving cover, threaded spud and nut, when the single roller appears damage, separately carry out the replacement of dismounting, reduce the downtime, and through setting the pulley, rubber bellows and sliding slot, the transverse movement of support block is convenient, reduces the friction between support block and base.

Description

Technical Field

[0001] This utility model relates to the field of bridge machinery technology, specifically a jacking device for bridge construction. Background Technology

[0002] The bridge launching method has been extensively studied and applied in concrete bridge construction, and a relatively complete construction method has been summarized. However, there are still significant shortcomings in the launching construction of long-span steel box girder bridges. Currently, the launching equipment commonly used in the launching construction of long-span bridges requires five steps in one launching cycle: main girder lifting, main girder advancement, main girder positioning, jack return, and main girder lifting. At the same time, some existing technologies also set rollers inside the launching plate, so that the load can be evenly transferred through multiple points, reducing the risk of beam deformation and improving construction accuracy. However, most of the existing rollers are arranged in a single row. If a single roller is damaged, the entire machine must be stopped and replaced, which will affect the construction efficiency.

[0003] A jacking device for bridge construction is proposed to address the problems mentioned above. Utility Model Content

[0004] The purpose of this utility model is to provide a jacking device for bridge construction, in order to solve the problem mentioned in the background art. In the existing technology, rollers are also set inside the jacking plate, so that the load can be evenly transmitted through multiple points, reducing the risk of beam deformation and improving construction accuracy. However, the existing rollers are mostly arranged in a single row. If a single roller is damaged, the entire machine needs to be stopped and replaced, which will affect the construction efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a jacking device for bridge construction, comprising a base, wherein connecting plates are symmetrically installed on both sides of the top surface of the base; A cylinder is connected through the middle of the connecting plate. A support block is fixedly connected to the side of the cylinder away from the connecting plate. Several electric push rods are fixedly installed on the top surface of the support block. A push plate is fixedly connected to the top surface of the electric push rods. Also includes: The push plate has several rollers rotatably connected inside; The roller has movable sleeves that are connected through both sides of its surface. Several threaded rods are fixedly connected to one side surface of the movable sleeve.

[0006] Preferably, the threaded insert is threaded with a nut on one side surface of the push plate away from the movable sleeve and passing through it, and the nut is in close contact with the push plate on one side surface.

[0007] Preferably, the threaded insert and nut are made of stainless steel.

[0008] Preferably, the support block has a plurality of limiting rods that are connected through it, and the two sides of the limiting rods are fixedly connected to the connecting plate.

[0009] Preferably, pulleys are symmetrically installed on both sides of the bottom surface of the support block, and rubber corrugated plates are symmetrically installed on both sides of the pulleys.

[0010] Preferably, the top surface of the base is symmetrically provided with sliding grooves, the sliding grooves are slidably connected to the pulleys, and the sliding grooves are fixedly connected to the rubber corrugated plate.

[0011] Preferably, the roller is made of high-strength alloy steel.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This bridge construction jacking device, by setting up a jacking plate, rollers, movable sleeves, threaded rods, and nuts, allows for individual disassembly and replacement when a single roller is damaged, thereby reducing downtime. Simultaneously, by setting up pulleys, rubber corrugated pipes, and sliding grooves, it facilitates the lateral movement of the support block, thereby reducing the friction between the support block and the base. The specific details are as follows: 1. By using a push plate, roller, movable sleeve, threaded rod, and nut, when a single roller is damaged, the nut is separated from the threaded rod using a tool. Then, by moving the movable sleeve backward on the roller, the threaded rod is completely separated from the push plate, facilitating the disassembly and replacement of the damaged roller. The movable sleeve and roller are connected by a through-sliding connection, ensuring that the roller's rotation is not affected when it is fixed to the push plate via the engagement of the movable sleeve, threaded rod, and nut. Furthermore, during roller installation, [the following steps are also described]. After the two sides of the roller are fitted into the inside of the push plate, the roller is moved to the designated position inside the push plate. Then, by pushing and moving, the moving sleeve drives the threaded rod through the through hole opened in the push plate, so that the threaded rod passes through the push plate. Finally, the nut is threaded onto the threaded rod to complete the installation of the roller. At the same time, the threaded rod and nut are made of stainless steel, which gives them good corrosion and rust resistance, as well as good strength, thereby reducing the likelihood of breakage when the threaded rod and nut are subjected to stress. 2. By setting pulleys, rubber corrugated pipes, and chutes, pulleys are set on both sides of the bottom of the support block, and the pulleys slide inside the chutes, which facilitates the movement of the support block, electric push rod, and push plate driven by the cylinder. At the same time, rubber corrugated pipes are set on the pulleys, and one side of the rubber corrugated pipes is fixedly connected to the chutes, which can protect the chutes and prevent gravel from entering the chutes and thus preventing the gravel from obstructing the movement of the pulleys. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the pulley and rubber corrugated plate structure in this utility model; Figure 3 This is a schematic diagram of the sliding groove structure in this utility model; Figure 4 This is a schematic diagram of the roller structure in this utility model; Figure 5 This is a schematic diagram of the threaded insert and nut structure in this utility model.

[0014] In the diagram: 1. Base; 2. Connecting plate; 3. Cylinder; 4. Support block; 5. Electric push rod; 6. Push plate; 7. Limiting rod; 8. Pulley; 9. Rubber corrugated plate; 10. Slide groove; 11. Roller; 12. Moving sleeve; 13. Threaded rod; 14. Nut. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-5 This utility model provides a technical solution: a jacking device for bridge construction, including a base 1, with connecting plates 2 symmetrically installed on both sides of the top surface of the base 1; a cylinder 3 is connected through the middle of the interior of the connecting plate 2, and a support block 4 is fixedly connected to the side of the cylinder 3 away from the connecting plate 2; a plurality of electric push rods 5 are fixedly installed on the top surface of the support block 4, and a jacking plate 6 is fixedly connected to the top surface of the electric push rods 5; it also includes: a plurality of rollers 11 rotatably connected inside the jacking plate 6; wherein, movable sleeves 12 are connected through both sides of the surface of the rollers 11; wherein, a plurality of threaded inserts 13 are fixedly connected to one side of the movable sleeves 12, such as Figure 1-5 As shown, by setting up the push plate 6, roller 11, movable sleeve 12, threaded rod 13 and nut 14, when a single roller 11 is damaged, it can be disassembled and replaced individually, thereby reducing downtime. At the same time, by setting up the pulley 8, rubber bellows and slide groove 10, the lateral movement of the support block 4 is facilitated, thereby reducing the friction between the support block 4 and the base 1. Meanwhile, the cylinder 3 is electrically connected to the control end, and the electric push rod 5 is model LAM33-A, and the electric push rod 5 is electrically connected to the control end.

[0017] A threaded insert 13, located away from the movable sleeve 12 and passing through one side surface of the push plate 6, is threadedly connected to a nut 14. One side surface of the nut 14 is in contact with the push plate 6. Both the threaded insert 13 and the nut 14 are made of stainless steel. Figure 4 , 5 As shown, when a single roller 11 is damaged, the nut 14 is separated from the threaded rod 13 by using a tool, and then the threaded rod 13 is completely separated from the push plate 6 by moving the movable sleeve 12 backward on the roller 11, thereby facilitating the disassembly and replacement of the single damaged roller 11.

[0018] Several limiting rods 7 are connected through the interior of the support block 4. The two sides of the limiting rods 7 are fixedly connected to the connecting plate 2. Pulleys 8 are symmetrically installed on both sides of the bottom surface of the support block 4. Rubber corrugated plates 9 are symmetrically installed on both sides of the pulleys 8. Sliding grooves 10 are symmetrically formed on the top surface of the base 1. The sliding grooves 10 are slidably connected to the pulleys 8 and fixedly connected to the rubber corrugated plates 9. Figure 2 , 3 As shown, by setting pulleys 8, rubber corrugated pipes, and sliding grooves 10, pulleys 8 are set on both sides of the bottom of the support block 4, and the pulleys 8 slide inside the sliding grooves 10, which makes it easy for the cylinder 3 to drive the support block 4, electric push rod 5, and push plate 6 to move. At the same time, the pulleys 8 are equipped with rubber corrugated pipes, and one side of the rubber corrugated pipes is fixedly connected to the sliding grooves 10, which can protect the sliding grooves 10 and prevent gravel from entering the sliding grooves 10, so that the gravel will not obstruct the movement of the pulleys 8.

[0019] Roller 11 is made of high-strength alloy steel, such as Figure 4 As shown, roller 11 is made of high-strength alloy steel and coated with a ceramic coating, which increases the hardness to HRC 60 or above and improves wear resistance by 3 to 5 times. The bearing is a self-aligning roller bearing to adapt to slight angular deviations and is filled with high-temperature grease suitable for -30℃ to 150℃, avoiding solidification at low temperatures or loss at high temperatures. At the same time, a buffer gap can be reserved between modules, and local impact loads can be absorbed by elastic gaskets to prevent deformation of the roller due to concentrated force caused by slight shaking of the beam.

[0020] Working principle: Before using this type of bridge construction jacking device, it is necessary to check the overall condition of the device to ensure it can operate normally. Figure 1 - Figure 5As shown, by first setting up a push plate 6, roller 11, movable sleeve 12, threaded rod 13, and nut 14, when a single roller 11 is damaged, the nut 14 is separated from the threaded rod 13 using a tool. Then, by moving the movable sleeve 12 backward on the roller 11, the threaded rod 13 is completely separated from the push plate 6, making it easy to disassemble and replace the single damaged roller 11. Simultaneously, the movable sleeve 12 and the roller 11 are connected by a through-sliding connection, which ensures that when the roller 11 is fixed on the push plate 6 through the cooperation of the movable sleeve 12, threaded rod 13, and nut 14, it does not affect the rotation of the roller 11. Furthermore, when the roller 11 is... During installation, after the two sides of the roller 11 are fitted into the inside of the push plate 6, the roller 11 is moved to the designated position inside the push plate 6. Then, by pushing and moving, the moving sleeve 12 drives the threaded rod 13 through the through hole opened on the push plate 6, so that the threaded rod 13 passes through the push plate 6. Finally, the nut 14 is threaded onto the threaded rod 13 to complete the installation of the roller 11. At the same time, the threaded rod 13 and the nut 14 are made of stainless steel, which gives the threaded rod 13 and the nut 14 good corrosion and rust resistance, as well as good strength, thereby reducing the likelihood of the threaded rod 13 and the nut 14 breaking under stress.

[0021] Secondly, by setting pulleys 8, rubber corrugated pipes, and sliding grooves 10, pulleys 8 are set on both sides of the bottom of the support block 4, and the pulleys 8 slide inside the sliding grooves 10, which makes it easy for the cylinder 3 to drive the support block 4, electric push rod 5, and push plate 6 to move. At the same time, rubber corrugated pipes are set on the pulleys 8, and one side of the rubber corrugated pipes is fixedly connected to the sliding grooves 10, which can protect the sliding grooves 10 and prevent gravel from entering the sliding grooves 10, thus preventing the gravel from obstructing the movement of the pulleys 8.

[0022] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A jacking device for bridge construction, comprising a base (1), wherein connecting plates (2) are symmetrically installed on both sides of the top surface of the base (1). A cylinder (3) is connected through the middle of the inside of the connecting plate (2). A support block (4) is fixedly connected to the side surface of the cylinder (3) away from the connecting plate (2). Several electric push rods (5) are fixedly installed on the top surface of the support block (4). A push plate (6) is fixedly connected to the top surface of the electric push rods (5). characterized in that Also includes: The push plate (6) is internally rotatably connected to several rollers (11). Among them, movable sleeves (12) are connected through both sides of the surface of the roller (11). Among them, a number of threaded rods (13) are fixedly connected to one side surface of the movable sleeve (12).

2. The pushing device for bridge construction according to claim 1, characterized in that: The threaded insert (13) is threaded to a nut (14) on one side surface of the push plate (6) away from the movable sleeve (12) and passing through it. The nut (14) is in contact with the push plate (6) on one side surface.

3. The launching device for bridge construction according to claim 2, characterized in that: The threaded insert (13) and nut (14) are made of stainless steel.

4. The pushing device for bridge construction according to claim 1, characterized in that: The support block (4) has several limiting rods (7) that are connected through it. The two sides of the limiting rods (7) are fixedly connected to the connecting plate (2).

5. The pushing device for bridge construction according to claim 1, characterized in that: The bottom surface of the support block (4) is symmetrically equipped with pulleys (8) on both sides, and rubber corrugated plates (9) are symmetrically installed on both sides of the pulleys (8).

6. The pushing device for bridge construction according to claim 1, characterized in that: The top surface of the base (1) is symmetrically provided with sliding grooves (10), the sliding grooves (10) are slidably connected to the pulleys (8), and the sliding grooves (10) are fixedly connected to the rubber corrugated plate (9).

7. The pushing device for bridge construction according to claim 1, characterized in that: The roller (11) is made of high-strength alloy steel.

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