A steel box girder docking and positioning device

Abstract

This utility model discloses a steel box girder docking and assembly positioning device, relating to the technical field of positioning devices. It includes a base with transmission grooves on its left and right side walls. A bidirectional screw is rotatably connected to the inner side of each transmission groove. Motors are fixedly connected to the left and right sides of the front side wall of the base. The rear end of the motor's power output shaft passes through the base and extends to the inner side of the transmission groove, and the rear end of the motor's power output shaft is fixedly connected to the bidirectional screw. An anti-interference mechanism is provided above the base, and a docking platform is provided above the base. This steel box girder docking and assembly positioning device has a reasonable structural design, allowing for quick and easy installation of the steel box girder onto the positioning device, facilitating the installation and disassembly of the steel box girder. It can also buffer and offset vibrations caused by external interference, improving the stability of the positioning device during steel box girder assembly.

Description

Technical Field

[0001] This utility model relates to the field of positioning device technology, specifically a positioning device for the docking and assembly of steel box girders. Background Technology

[0002] Steel box girders, also known as steel plate box girders, are a common structural form for long-span bridges. They are generally used on bridges with large spans. Because their shape resembles a box, they are called steel box girders. When hoisting steel structure bridges, the steel box girder to be installed must be precisely aligned with the already installed steel box girder beforehand. Only after precise alignment can the two be connected into a whole by welding.

[0003] The existing steel box girder docking and positioning device lacks a reliable support mechanism, which makes the steel box girder susceptible to interference from external factors during the splicing process, causing the positioning device to vibrate and affecting the accuracy of the steel box girder during splicing. In addition, the existing steel box girder docking and positioning device is not convenient for fixing the steel box girder, requiring the use of multiple fixing bolts to fix the steel box girder to the positioning device, which is inconvenient for installation and disassembly. Therefore, a new technical solution needs to be designed to solve this problem. Utility Model Content

[0004] 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.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a steel box girder docking and positioning device, comprising a base, transmission grooves on the left and right side walls of the base, a bidirectional screw rotatably connected to the inner side of the transmission grooves, motors fixedly connected to the left and right sides of the front side wall of the base, the rear end of the power output shaft of the motor passing through the base and extending to the inner side of the transmission grooves, and the rear end of the power output shaft of the motor being fixedly connected to the bidirectional screw, an anti-interference mechanism being provided above the base, a docking platform being provided above the base, a steel box girder body being placed on the top of the docking platform on the front and rear sides, and a positioning mechanism being provided inside the docking platform.

[0006] Preferably, the anti-interference mechanism includes a connecting plate, which is screwed to the front and rear sides of the outer side wall of the bidirectional screw. An mounting plate is fixedly connected between the inner sides of the connecting plates on the left and right sides. A base plate is fixedly connected to the top of the mounting plate, and the base plate is evenly distributed. Friction rods are fixedly connected around the top of the base plate, and the friction rods are evenly distributed. Damping force is generated by contact friction between the friction rods and the friction sleeve.

[0007] Preferably, a top plate is slidably connected to the outer wall of the friction rod, and a friction sleeve is fixedly connected to the top circumference of the top plate, with the inner side of the friction sleeve in contact with the friction rod.

[0008] Preferably, magnets are fixedly connected to the inner sides of the base plate and the top plate, buffer springs are fixedly connected to the top circumference of the base plate and are evenly distributed, the top ends of the buffer springs are fixedly connected to the top plate, a support rod is fixedly connected to the top of the top plate, and the top end of the support rod is fixedly connected to the docking platform. The interference from the outside world is buffered by the magnets and buffer springs.

[0009] Preferably, the positioning mechanism includes a mounting groove, which is formed on the left and right sides inside the docking platform. A mounting rod is fixedly connected between the left and right side walls of the inner cavity of the mounting groove. A compression spring is sleeved on the outer side wall of the mounting rod. The position of the positioning plate is adjusted in real time by the compression spring in conjunction with the connecting seat.

[0010] Preferably, a connecting seat is slidably connected to the outer wall of the mounting rod, a positioning plate is fixedly connected to the top of the connecting seat, the inner sides of the positioning plates on both sides are in contact with the main body of the steel box girder, and positioning stakes are fixedly connected to the inner sides of the positioning plates on both sides. The positioning stakes are evenly distributed, and the ends of the positioning stakes on both sides extend into the interior of the main body of the steel box girder. The main body of the steel box girder is fixed by the positioning stakes.

[0011] Preferably, an installation cylinder is fixedly connected to the top of the positioning plate, and a limiting rod is slidably connected to the inner cavity of the installation cylinder. The bottom end of the limiting rod passes through the installation cylinder and the positioning plate and extends into the interior of the steel box girder body. A connecting rod is fixedly connected to the top of the limiting rod, and the top end of the connecting rod passes through the installation cylinder and extends to the top of the installation cylinder. A return spring is sleeved on the outer wall of the connecting rod, and the steel box girder is repositioned by the limiting rod.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. The steel box girder docking and positioning device, through an anti-interference mechanism, can buffer and cancel the vibration caused by external interference to the positioning device, improve the stability of the positioning device when splicing the steel box girder, and prevent external interference from affecting the stability of the steel box girder during splicing.

[0014] 2. This steel box girder docking and positioning device can quickly fix the steel box girder onto the positioning device through the positioning mechanism, without the need to use fixing bolts to fix the steel box girder, which facilitates the installation and disassembly of the steel box girder. Attached Figure Description

[0015] Figure 1 This is a front-view three-dimensional structural schematic diagram of a steel box girder docking and positioning device proposed in this utility model;

[0016] Figure 2 This is a three-dimensional cross-sectional view of the positioning mechanism of the positioning device for the butt joint assembly of steel box girders proposed in this utility model.

[0017] Figure 3 This is a cross-sectional structural diagram of the anti-interference mechanism of a steel box girder docking and positioning device proposed in this utility model;

[0018] Figure 4 This is a schematic diagram of the left-side plan view of a steel box girder docking and positioning device proposed in this utility model;

[0019] Figure 5 This utility model proposes a positioning device for the butt joint assembly of steel box girders. Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0020] In the diagram: 100, base; 110, transmission groove; 111, double-acting screw; 120, motor; 130, connecting plate; 131, mounting plate; 140, bottom plate; 141, friction rod; 150, top plate; 151, friction sleeve; 160, magnet; 170, buffer spring; 180, support rod; 200, docking platform; 210, main body of steel box girder; 220, mounting groove; 221, mounting rod; 222, compression spring; 230, connecting seat; 240, positioning plate; 241, positioning stake; 250, mounting cylinder; 251, limit rod; 260, connecting rod; 261, return spring. Detailed Implementation

[0021] 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.

[0022] Example 1: Please refer to again Figure 1-5This utility model provides a steel box girder docking and positioning device, including a base 100. The left and right side walls of the base 100 have transmission grooves 110. A bidirectional screw 111 is rotatably connected to the inner side of the transmission grooves 110. Motors 120 are fixedly connected to the left and right sides of the front side wall of the base 100. The rear end of the power output shaft of the motor 120 passes through the base 100 and extends to the inner side of the transmission grooves 110. The rear end of the power output shaft of the motor 120 is fixedly connected to the bidirectional screw 111. An anti-interference mechanism is provided above the base 100. The anti-interference mechanism includes a connecting plate 130, which is screwed to the front and rear sides of the outer side wall of the bidirectional screw 111. A mounting plate 131 is fixedly connected between the inner sides of the left and right connecting plates 130. A base plate 140 is fixedly connected to the top of the platform, and the base plate 140 is evenly distributed. Friction rods 141 are fixedly connected to the top circumference of the base plate 140, and the friction rods 141 are evenly distributed. A top plate 150 is slidably connected to the outer wall of the friction rods 141. A friction sleeve 151 is fixedly connected to the top circumference of the top of the top plate 150. The inner side of the friction sleeve 151 is in contact with the friction rods 141. A magnet 160 is fixedly connected to the inner side of the base plate 140 and the top plate 150. A buffer spring 170 is fixedly connected to the top circumference of the base plate 140, and the buffer springs 170 are evenly distributed. The top end of the buffer spring 170 is fixedly connected to the top plate 150. A support rod 180 is fixedly connected to the top of the top plate 150. The top end of the support rod 180 is fixedly connected to the docking platform 200.

[0023] Specifically, when subjected to external interference, the docking platform 200 is affected and applies pressure to the bottom support rod 180, causing the top plate 150 to slide on the friction rod 141 and move closer to the bottom plate 140. This causes the S pole of the magnet 160 mounted on the top plate 150 to move closer to the S pole of the magnet 160 mounted on the bottom plate 140, generating a repulsive force when the two magnets 160 come close together. At the same time, the proximity of the top plate 150 and the bottom plate 140 causes the buffer spring 170 mounted between them to deform, which, together with the magnet 160, buffers the vibration. Meanwhile, the sliding of the top plate 150 on the friction rod 141 causes the friction rod 141 to rub against the friction sleeve 151, generating a damping force.

[0024] Example 2: Please refer to again Figure 1-5A docking platform 200 is provided above the base 100. A steel box girder body 210 is placed on top of the docking platforms 200 on both the front and rear sides. A positioning mechanism is provided inside the docking platform 200, including mounting grooves 220. The mounting grooves 220 are located on the left and right sides inside the docking platform 200. Mounting rods 221 are fixedly connected between the left and right side walls of the inner cavity of the mounting grooves 220. Compression springs 222 are sleeved on the outer side walls of the mounting rods 221. Connecting seats 230 are slidably connected to the outer side walls of the mounting rods 221. Positioning plates 240 are fixedly connected to the top of the connecting seats 230. The inner sides of the positioning plates 240 on both the left and right sides are in contact with the steel box girder body 210. Positioning pins 241 are fixedly connected to the inner side of the positioning plate 240, and the positioning pins 241 are evenly distributed. The ends of the positioning pins 241 on the left and right sides extend into the interior of the steel box girder body 210. An installation cylinder 250 is fixedly connected to the top of the positioning plate 240. A limiting rod 251 is slidably connected to the inner cavity of the installation cylinder 250. The bottom end of the limiting rod 251 passes through the installation cylinder 250 and the positioning plate 240 and extends into the interior of the steel box girder body 210. A connecting rod 260 is fixedly connected to the top end of the limiting rod 251. The top end of the connecting rod 260 passes through the installation cylinder 250 and extends to the top end of the installation cylinder 250. A return spring 261 is sleeved on the outer wall of the connecting rod 260.

[0025] Specifically, by pulling the two positioning plates 240, the connecting seat 230 at the bottom of the positioning plates 240 compresses the compression spring 222, leaving sufficient space between the two positioning plates 240. Then, the main body of the steel box girder 210 is placed between the two positioning plates 240. Next, the intervention on the two positioning plates 240 is removed, allowing the compressed compression spring 222 to extend, causing the two positioning plates 240 to move closer to the steel box girder. Then, the connecting rod 260 is pulled, causing the connecting rod 260 to move the limiting rod 251. After the return spring 261 is compressed, it rises into the mounting cylinder 250, causing the limiting rod 251 to release its obstruction of the positioning plate 240 and the main body of the steel box girder 210. This allows the positioning pin 241 on the steel box girder to be inserted into the main body of the steel box girder 210. Then, the connecting rod 260 is released, causing the return spring 261 to return and extend, pushing the limiting rod 251 to descend and be inserted into the main body of the steel box girder 210. The positioning pin 241 and the limiting rod 251 cooperate to fix the main body of the steel box girder 210.

[0026] Working principle: When subjected to external interference, the docking platform 200 is affected and applies pressure to the bottom support rod 180, causing the top plate 150 to slide on the friction rod 141 and move closer to the bottom plate 140. This causes the S pole of the magnet 160 installed on the top plate 150 to move closer to the S pole of the magnet 160 installed on the bottom plate 140, generating a repulsive force when the two magnets 160 come close together. At the same time, the proximity of the top plate 150 and the bottom plate 140 causes the buffer spring 170 installed between them to deform, which, together with the magnet 160, buffers the vibration. Meanwhile, the sliding of the top plate 150 on the friction rod 141 causes the friction rod 141 to rub against the friction sleeve 151, generating a damping force.

[0027] By pulling the two positioning plates 240, the connecting seats 230 at the bottom of the positioning plates 240 compress the compression springs 222, leaving sufficient space between the two positioning plates 240. Then, the main body of the steel box girder 210 is placed between the two positioning plates 240. Subsequently, the intervention on the two positioning plates 240 is removed, allowing the compressed compression springs 222 to extend, causing the two positioning plates 240 to move closer to the steel box girder. Then, the connecting rod 260 is pulled, causing the connecting rod 260 to drive the limiting rod 251 to reset. After being compressed, the spring 261 rises into the mounting cylinder 250, causing the limiting rod 251 to release its obstruction of the positioning plate 240 and the main body of the steel box girder 210. This allows the positioning pin 241 on the steel box girder to be inserted into the main body of the steel box girder 210. Then, the connecting rod 260 is released, causing the return spring 261 to return and extend, pushing the limiting rod 251 to descend and be inserted into the main body of the steel box girder 210. The positioning pin 241 and the limiting rod 251 work together to fix the main body of the steel box girder 210.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A steel box girder docking and positioning device, comprising a base (100), wherein the left and right side walls of the base (100) are provided with transmission grooves (110), and a bidirectional screw (111) is rotatably connected to the inner side of the transmission grooves (110). Motors (120) are fixedly connected to the left and right sides of the front side wall of the base (100), and the rear end of the power output shaft of the motor (120) passes through the base (100) and extends to the inner side of the transmission grooves (110), and the rear end of the power output shaft of the motor (120) is fixedly connected to the bidirectional screw (111), characterized in that... An anti-interference mechanism is provided above the base (100); A docking platform (200) is provided above the base (100), and a steel box girder body (210) is placed on the top of the docking platform (200) on both the front and rear sides. A positioning mechanism is provided inside the docking platform (200). The anti-interference mechanism includes a connecting plate (130), which is screwed to the front and rear sides of the outer side wall of the bidirectional screw (111). An mounting plate (131) is fixedly connected between the inner sides of the connecting plates (130) on the left and right sides. A base plate (140) is fixedly connected to the top of the mounting plate (131), and the base plates (140) are evenly distributed. Friction rods (141) are fixedly connected around the top of the base plates (140), and the friction rods (141) are evenly distributed. The positioning mechanism includes a mounting groove (220), which is opened on the left and right sides inside the docking platform (200). A mounting rod (221) is fixedly connected between the left and right side walls of the inner cavity of the mounting groove (220), and a compression spring (222) is sleeved on the outer side wall of the mounting rod (221).

2. The steel box girder butt welding and positioning device as described in claim 1, characterized in that, A top plate (150) is slidably connected to the outer wall of the friction rod (141), and a friction sleeve (151) is fixedly connected to the top circumference of the top plate (150). The inner side of the friction sleeve (151) is in contact with the friction rod (141).

3. The steel box girder butt welding and positioning device as described in claim 2, characterized in that, Magnets (160) are fixedly connected to the inner side of the base plate (140) and the top plate (150). Buffer springs (170) are fixedly connected to the top of the base plate (140) around its perimeter, and the buffer springs (170) are evenly distributed. The top of the buffer springs (170) is fixedly connected to the top plate (150). A support rod (180) is fixedly connected to the top of the top plate (150), and the top of the support rod (180) is fixedly connected to the docking platform (200).

4. The steel box girder butt welding and positioning device as described in claim 3, characterized in that, The outer wall of the mounting rod (221) is slidably connected to a connecting seat (230), and the top of the connecting seat (230) is fixedly connected to a positioning plate (240). The inner sides of the positioning plates (240) on the left and right sides are in contact with the main body of the steel box girder (210). The inner sides of the positioning plates (240) on the left and right sides are fixedly connected to positioning stakes (241), and the positioning stakes (241) are evenly distributed. The ends of the positioning stakes (241) on the left and right sides extend into the interior of the main body of the steel box girder (210).

5. The steel box girder butt welding and positioning device as described in claim 4, characterized in that, The top of the positioning plate (240) is fixedly connected to an installation cylinder (250). The inner cavity of the installation cylinder (250) is slidably connected to a limiting rod (251). The bottom end of the limiting rod (251) passes through the installation cylinder (250) and the positioning plate (240) and extends into the interior of the steel box girder body (210). The top end of the limiting rod (251) is fixedly connected to a connecting rod (260). The top end of the connecting rod (260) passes through the installation cylinder (250) and extends to the top of the installation cylinder (250). A return spring (261) is sleeved on the outer wall of the connecting rod (260).

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