A rapid positioning and locking device for hoisting Bailey beams for cross-road bridges

Abstract

This utility model relates to the field of bridge construction technology, specifically a rapid positioning and locking device for hoisting Bailey beams for cross-road bridges. It includes: a Bailey beam body, with one end resting on the upper surface of a supporting crossbeam; positioning side plates arranged in pairs and symmetrically distributed between adjacent Bailey beam bodies; the upper end of each positioning side plate is bent to form a guide portion; a torsion spring for resetting the rotating plate is provided between the other end of the rotating plate and the bottom of the receiving groove. The beneficial effect is that by providing positioning side plates arranged in pairs and symmetrically distributed on the supporting crossbeam, after the Bailey beam body descends, it presses down on the rotating plate using its own weight, causing the rotating plate to rotate. At this time, the toothed plate clamps onto the upper surface of the supporting crossbeam, thereby achieving horizontal positioning of the positioning side plates, ensuring the stability of the horizontal position of the Bailey beam body, and effectively preventing the Bailey beam body from shifting position.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction technology, specifically to a rapid positioning and locking device for hoisting Bailey beams for cross-road bridges. Background Technology

[0002] During the construction of cross-road bridges, the erection of Bailey bridges is of great necessity. Bailey bridges adopt a modular design, which can be quickly assembled and the span and height can be adjusted. Their truss structure has a strong load-bearing capacity, which can provide stable temporary support for bridge construction and ensure the traffic safety of the road below.

[0003] In the existing technology, after the Bailey beam is hoisted to the designated position, the lower part of the Bailey beam is supported by a steel crossbeam, and the adjacent Bailey beams are installed and positioned by means of angle steel or C-shaped steel and bolts.

[0004] However, currently, the number of Bailey bridge beams used in cross-road bridges is enormous. After the Bailey beams are hoisted and placed on the steel crossbeams, they are prone to displacement due to external forces and vibrations before being properly positioned and locked. This not only affects the spacing between adjacent Bailey beams but also prolongs the overall bridge construction period. Therefore, this utility model proposes a rapid positioning and locking device for hoisting Bailey beams in cross-road bridges to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a rapid positioning and locking device for hoisting Bailey beams for cross-road bridges, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a rapid positioning and locking device for hoisting Bailey beams used in cross-road bridges, comprising:

[0007] The Bailey beam body is composed of three single Bailey frames that are fixedly connected to each other, and the ends of the Bailey beam body rest on the upper surface of the supporting crossbeam.

[0008] Positioning side plates are arranged in pairs and symmetrically distributed between two adjacent Bailey beam bodies. Elastic pressure bars are fixed to the surfaces of the two positioning side plates that are close to each other. One end of the elastic pressure bar is provided with a fixing plate, and the fixing plate is fixedly welded to the supporting crossbeam.

[0009] The upper end of the positioning side plate is bent to form a guide part, and a storage groove is provided at the bottom of the positioning side plate. A rotating plate is rotatably installed in the inner cavity of the storage groove. A toothed plate is fixed at one end of the rotating plate, and a torsion spring for resetting the rotating plate is provided between the other end of the rotating plate and the bottom of the storage groove.

[0010] Preferably, the guide portion bends away from the Bailey beam body, and the two guide portions form a figure-eight shape.

[0011] Preferably, anti-deviation plates are fixed on both sides of the bottom of the positioning side plate, and the two anti-deviation plates are respectively attached to the two side surfaces of the supporting beam.

[0012] Preferably, both sides of the supporting beam are provided with strip-shaped grooves, and the inner wall of the anti-deviation plate is rotatably mounted with a rolling wheel, which is located in the inner cavity of the strip-shaped groove and fits against the upper inner wall of the strip-shaped groove.

[0013] Preferably, the rolling wheels are arranged in pairs and located at the horizontal ends of the anti-deviation plate.

[0014] Preferably, the elastic pressure rod includes an outer cylinder, one end of which is movably inserted with a rod, and the end of the rod located in the inner cavity of the outer cylinder is fixedly connected to a piston, and a thrust spring is provided between the piston and the bottom of the groove of the outer cylinder.

[0015] Preferably, the upper surface of the supporting beam is provided with a recessed groove, and a rubber layer is bonded and fixed to the bottom of the recessed groove. The Bailey beam body presses down on the toothed plate from top to bottom, and the teeth on the lower surface of the toothed plate are locked onto the rubber layer.

[0016] Preferably, a U-shaped steel is provided on the upper side of the end of the Bailey beam body, and two adjacent Bailey beam bodies are fixedly connected by the U-shaped steel and bolts.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This invention features symmetrically arranged positioning side plates arranged in pairs on a supporting crossbeam. The positioning side plates are horizontally slidably connected to the supporting crossbeam. A rotating plate is rotatably mounted at the bottom of the positioning side plate, and a toothed plate is provided at one end of the rotating plate. When the Bailey beam body is suspended in the air after hoisting, the Bailey beam body can push the positioning side plates to move horizontally, thereby adjusting the distance between two adjacent Bailey beam bodies. After the Bailey beam body descends, it relies on its own weight to press down on the rotating plate, causing the rotating plate to rotate. At this time, the toothed plate clamps the upper surface of the supporting crossbeam, thereby achieving horizontal positioning of the positioning side plates, ensuring the stability of the horizontal position of the Bailey beam body, and effectively preventing the position of the Bailey beam body from shifting. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a front view of the overall structure of this utility model;

[0021] Figure 3This is a schematic diagram showing the connection between the positioning side plate and the supporting crossbeam structure of this utility model;

[0022] Figure 4 This is a three-dimensional schematic diagram of the positioning side plate structure of this utility model;

[0023] Figure 5 This is a half-sectional schematic diagram of the positioning side plate structure of this utility model.

[0024] In the diagram: 1. Bailey beam body; 2. Support beam; 21. Strip groove; 22. Recessed groove; 3. Positioning side plate; 31. Anti-deviation plate; 32. Rolling wheel; 33. Elastic pressure bar; 331. Outer cylinder; 332. Insert rod; 333. Piston; 334. Thrust spring; 34. Guide part; 35. Storage groove; 36. Rotating plate; 37. Toothed plate; 4. Fixing plate; 5. C-shaped steel. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] Example 1, please refer to Figures 1-5 This utility model provides a technical solution: a Bailey beam hoisting quick positioning and locking device for cross-road bridges, comprising: Bailey beam body 1 and positioning side plate 3.

[0027] Specifically, the Bailey beam body 1 is composed of three single Bailey frames that are fixedly connected to each other. The end of the Bailey beam body 1 rests on the upper surface of the support beam 2. The support beam 2 is used to support the Bailey beam body 1. It should be noted that support beams 2 are provided at both ends of the Bailey beam body 1, and the two ends of the Bailey beam body 1 rest on the two support beams 2 respectively.

[0028] Secondly, the positioning side plates 3 are arranged in pairs and symmetrically distributed between two adjacent Bailey beam bodies 1. It should be noted that the positioning side plates 3 are only used for the initial positioning of the Bailey beam bodies 1. The Bailey beam bodies 1 are lifted by the hoisting equipment. After the hoisting equipment moves the Bailey beam bodies 1 to the designated position, it lowers the Bailey beam bodies 1 to correspond with the positioning side plates 3. At this time, the workers can horizontally push the Bailey beam bodies 1 to adjust their horizontal position, ensuring that the distance between two adjacent Bailey beam bodies 1 is within a suitable range. Afterwards, after the hoisting equipment is removed, the workers need to further lock and position the Bailey beam bodies 1, such as by using existing known structures such as bolts and buckles. This will not be elaborated here. Since the subsequent locking and positioning work is carried out after the hoisting equipment is removed, it can effectively reduce safety hazards and make full use of the time after the hoisting equipment is removed to carry out the work, thereby shortening the construction period.

[0029] In addition, elastic pressure rods 33 are fixed on the surfaces of the two positioning side plates 3 that are close to each other. One end of the elastic pressure rod 33 is provided with a fixing plate 4, and the fixing plate 4 is fixedly welded to the supporting crossbeam 2. The elastic pressure rod 33 has a built-in spring and can extend and retract itself. The elastic pressure rod 33 is used to push the positioning side plates 3 so that the two positioning side plates 3 in the same group always have a tendency to move away from each other, thereby pushing the Bailey beam body 1 to move horizontally.

[0030] Furthermore, the upper end of the positioning side plate 3 is bent to form a guide portion 34. The guide portion 34 can guide the downward movement of the Bailey beam body 1, ensuring that there is a small amount of misalignment and error between the Bailey beam body 1 and the positioning side plate 3 during the downward movement. A storage groove 35 is provided at the bottom of the positioning side plate 3. A rotating plate 36 is rotatably mounted in the inner cavity of the storage groove 35. A toothed plate 37 is fixed at one end of the rotating plate 36. A torsion spring for resetting the rotating plate 36 is provided between the other end of the rotating plate 36 and the bottom of the storage groove 35. In the initial state, the rotating plate 36 is kept in contact with the positioning side plate 3 by the torsion force of the torsion spring. When the Bailey beam body 1 moves downward, the Bailey beam body 1 will press against the toothed plate 37. The toothed plate 37 and the rotating plate 36 are pushed downwards by a certain angle. At this time, the teeth on the lower surface of the toothed plate 37 can clamp the upper surface of the supporting beam 2, thereby positioning the positioning side plate 3 and preventing the positioning side plate 3 from sliding along the length of the supporting beam 2. In other words, during the downward movement of the Bailey beam body 1, the Bailey beam body 1 presses against the guide part 34, which can push the positioning side plate 3 to slide along the length of the supporting beam 2. When the Bailey beam body 1 moves down to the lowest point, the Bailey beam body 1 presses against the toothed plate 37, and the toothed plate 37 clamps the supporting beam 2, so the positioning side plate 3 can be positioned. At this time, the positioning side plate 3 can achieve the initial positioning of the Bailey beam body 1 in the horizontal direction.

[0031] To guide the downward movement of the positioning side plate 3, the guide portion 34 of this application bends away from the Bailey beam body 1, and the two guide portions 34 form a figure-eight shape, such as... Figure 3 As shown, the guide part 34 is used to guide the downward movement of the Bailey beam body 1 to ensure that the two positioning side plates 3 of a set can be located between two adjacent Bailey beam bodies 1.

[0032] To prevent the positioning side plate 3 from shifting in the direction of the vertical support beam 2, this application also has anti-deviation plates 31 fixed on both sides of the bottom of the positioning side plate 3, and the two anti-deviation plates 31 respectively abut against the two side surfaces of the support beam 2. The anti-deviation plates 31 are mainly used to prevent the positioning side plate 3 from shifting in the direction of the vertical support beam 2, thereby ensuring that the positioning side plate 3 can only slide horizontally along the length direction of the support beam 2 on the upper surface of the support beam 2.

[0033] To prevent the positioning side plate 3 from detaching from the support beam 2, this application also has strip grooves 21 on both sides of the support beam 2. Rolling wheels 32 are rotatably installed on the inner wall of the anti-deviation plate 31. The rolling wheels 32 are located in the inner cavity of the strip groove 21 and fit against the upper inner wall of the strip groove 21. The cooperation between the rolling wheels 32 and the strip groove 21 can prevent the positioning side plate 3 from shifting in the vertical direction.

[0034] To prevent the positioning side plate 3 from tilting and rotating, the rolling wheels 32 of this application are arranged in pairs and located at the horizontal ends of the anti-deviation plate 31, as follows: Figure 2 As shown, the positioning side plate 3 itself is L-shaped. Two rolling wheels 32 are set on the inner side of the anti-deviation plate 31 to prevent the positioning side plate 3 from being squeezed by the side of the Bailey beam body 1 and rotating, thereby ensuring that the vertical plate of the positioning side plate 3 can always be kept vertical.

[0035] To provide a detailed description of the structure of the elastic pressure rod 33, the elastic pressure rod 33 of this application includes an outer cylinder 331, one end of which is movably inserted with a rod 332. The end of the rod 332 located in the inner cavity of the outer cylinder 331 is fixedly connected with a piston 333. A thrust spring 334 is provided between the piston 333 and the bottom of the groove of the outer cylinder 331. In other words, the length of the elastic pressure rod 33 itself can be adjusted, and it has a certain reset function.

[0036] To prevent the toothed plate 37 from being crushed by the Bailey beam body 1, this application also has a recessed groove 22 on the upper surface of the supporting crossbeam 2. A rubber layer is bonded and fixed to the bottom of the recessed groove 22. The Bailey beam body 1 presses down on the toothed plate 37 from top to bottom, and the teeth on the lower surface of the toothed plate 37 are locked onto the rubber layer. When the toothed plate 37 rotates downward, it can be locked into the inner cavity of the recessed groove 22. Therefore, most of the weight of the Bailey beam body 1 itself is supported by the supporting crossbeam 2, rather than by the toothed plate 37, thereby avoiding the toothed plate 37 from being broken or damaged due to excessive downward pressure from the Bailey beam body 1. The rubber layer itself can undergo elastic deformation and cooperate with the teeth on the lower surface of the toothed plate 37 to achieve stable positioning of the positioning side plate 3.

[0037] To further position the Bailey beam body 1, this application also includes an I-shaped steel 5 provided on the upper side of the end of the Bailey beam body 1. Two adjacent Bailey beam bodies 1 are fixedly connected by the I-shaped steel 5 and bolts. The length of the I-shaped steel 5 is slightly larger than the distance between two adjacent Bailey beam bodies 1. Both ends of the I-shaped steel 5 are provided with waist holes to facilitate the use of bolts to fix the Bailey beam body 1, thereby achieving the final locking and positioning of the Bailey beam body 1.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A kind of quick positioning and locking device for hoisting bailey beam across road bridge, it is characterized in that: include: The Bailey beam body (1) is composed of three single Bailey frames that are fixedly connected to each other. The end of the Bailey beam body (1) rests on the upper surface of the supporting crossbeam (2). Positioning side plate (3), the positioning side plate (3) is set in pairs and symmetrically distributed between two adjacent Bailey beam bodies (1), and elastic pressure rods (33) are fixed on the surfaces of the two positioning side plates (3) that are close to each other. One end of the elastic pressure rod (33) is provided with a fixing plate (4), and the fixing plate (4) is fixedly welded to the supporting crossbeam (2). The upper end of the positioning side plate (3) is bent to form a guide part (34). A storage groove (35) is provided at the bottom of the positioning side plate (3). A rotating plate (36) is rotatably installed in the inner cavity of the storage groove (35). A toothed plate (37) is fixed at one end of the rotating plate (36). A torsion spring for resetting the rotating plate (36) is provided between the other end of the rotating plate (36) and the bottom of the storage groove (35).

2. The quick positioning and locking device for hoisting the bailey beam across the road bridge according to claim 1, characterized in that: The guide section (34) bends away from the Bailey beam body (1), and the two guide sections (34) form an "eight" shape.

3. The quick positioning and locking device for hoisting the bailey beam across the road bridge according to claim 2, characterized in that: Both sides of the bottom of the positioning side plate (3) are fixed with anti-deviation plates (31), and the two anti-deviation plates (31) are respectively attached to the two sides of the supporting beam (2).

4. The quick positioning and locking device for hoisting the bailey beam across the road bridge according to claim 3, characterized in that: The two sides of the supporting beam (2) are provided with strip grooves (21), and the inner wall of the anti-deviation plate (31) is rotatably equipped with a rolling wheel (32). The rolling wheel (32) is located in the inner cavity of the strip groove (21) and fits against the upper inner wall of the strip groove (21).

5. The quick positioning and locking device for hoisting the bailey beam across the road bridge according to claim 4, characterized in that: The rolling wheels (32) are arranged in pairs and located at the horizontal ends of the anti-deviation plate (31).

6. The quick positioning and locking device for hoisting the bailey beam across the road bridge according to claim 5, characterized in that: The elastic pressure rod (33) includes an outer cylinder (331), one end of which is movably inserted with a rod (332), and the end of the rod (332) located in the inner cavity of the outer cylinder (331) is fixedly connected with a piston (333), and a thrust spring (334) is provided between the piston (333) and the bottom of the groove of the outer cylinder (331).

7. The quick positioning and locking device for hoisting the bailey beam across the road bridge according to claim 6, characterized in that: The upper surface of the supporting beam (2) is provided with a recessed groove (22), and a rubber layer is bonded and fixed to the bottom of the recessed groove (22). The Bailey beam body (1) presses down on the toothed plate (37) from top to bottom and clamps the teeth on the lower surface of the toothed plate (37) onto the rubber layer.

8. The quick positioning and locking device for hoisting the bailey beam across the road bridge according to claim 1, characterized in that: A U-shaped steel (5) is provided on the upper side of the end of the Bailey beam body (1), and two adjacent Bailey beam bodies (1) are fixedly connected by the U-shaped steel (5) and bolts.

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