A rapid positioning device for a bridge cantilever

Abstract

The utility model discloses a kind of for bridge cantilever's quick positioning equipment, belong to bridge cantilever construction technical field, it includes mounting seat, the mounting seat top is equipped with two sliding slots, the sliding slot inner wall sliding connection has movable block in each, the movable block top is equipped with rack, the rack inside is equipped with movable slot, the middle position in movable slot inside is rotatably connected with rotating plate by pin shaft.The quick positioning equipment for bridge cantilever, by setting hydraulic telescopic link, movable plate, connecting rod and rotating plate, when movable plate moves, connecting rod is moved on rotating plate, so that connecting rod moves another connecting rod on rotating plate by rotating plate, two connecting rods are moved relatively by connecting plate, until positioning plate is placed on the both sides of bridge cantilever, realize the limiting fixing of bridge cantilever, realize the quick positioning of bridge cantilever, improve the stability of equipment use.

Description

Technical Field

[0001] This utility model belongs to the field of bridge cantilever construction technology, specifically a rapid positioning device for bridge cantilever. Background Technology

[0002] A bridge cantilever refers to a section of a bridge structure where the beam or deck extends outward from the pier or abutment, with one or both ends not directly connected to other structures, forming a cantilevered state. There are two main types: cantilever casting and cantilever assembly. Cantilever assembly involves using a cantilever crane to lift pre-fabricated beam or arch segments to the end of the completed structure for assembly. After one segment is assembled, the crane moves to the next segment, and so on, with the cantilever continuously increasing until the structure is joined at mid-span or directly assembled onto the next pier. This method offers fast construction speed, high beam segment construction quality, and minimal impact from weather. The prefabrication of the superstructure can be carried out simultaneously with the construction of the substructure, shortening the construction period. A rapid positioning device for bridge cantilevers refers to an auxiliary device for positioning bridge cantilevers during docking. Existing positioning devices typically use cables to lift and position the bridge cantilever. However, because cables are prone to swaying, the bridge cantilever sways along with the cables, making alignment difficult and causing inconvenience to the splicing operation. Utility Model Content

[0003] To overcome the above-mentioned defects, this utility model provides a rapid positioning device for bridge cantilever, which solves the problem that when using positioning devices, the bridge cantilever is usually hoisted and positioned by cables. However, because the cables are prone to shaking, the bridge cantilever will shake along with the cables, making it difficult to align the bridge cantilever and causing inconvenience to the splicing operation.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a rapid positioning device for bridge cantilever, comprising a mounting base, two sliding grooves on the top of the mounting base, a movable block slidably connected to the inner wall of each sliding groove, a placement frame mounted on the top of each movable block, a movable groove inside the placement frame, a rotating plate rotatably connected to the middle position of the movable groove via a pin, connecting rods rotatably connected to the top two sides of the rotating plate via pins, a movable plate rotatably mounted on the end of each connecting rod away from the rotating plate via a pin, the movable plate slidably connected to the inner wall of the movable groove, two hydraulic telescopic rods mounted on one side of one of the movable plates, the hydraulic telescopic rods fixedly connected to the inner wall of the movable groove, a connecting plate fixedly mounted on one side of the movable plate, the connecting plate slidably connected to the movable groove, a positioning plate mounted on one side of the connecting plate through the placement frame, and a cantilever body mounted between two opposing positioning plates.

[0005] As a further embodiment of this utility model: an electric telescopic rod is installed on the top of the positioning plate, and a pressure plate is installed on the top of the electric telescopic rod, with the pressure plate closely attached to the top of the cantilever body.

[0006] As a further embodiment of this utility model: a motor is fixedly connected to the middle position of the bottom of the mounting base, and the motor is equipped with a gear through the output shaft. The gear is rotatably connected to the bottom of the mounting base through a bearing.

[0007] As a further embodiment of this utility model: the gear is meshed with a linkage tooth plate on both sides, and the linkage tooth plate is fixedly connected to the bottom of the movable block.

[0008] As a further embodiment of this utility model: the bottom of the mounting base is fixedly connected to limit blocks on both sides of the slide groove, and a guide rail is fixedly installed between the two relative limit blocks.

[0009] As a further embodiment of this utility model: the bottom of the movable block is fixedly connected to a movable frame on one side of the linkage tooth plate, and the movable frame is slidably connected to the guide rail.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] 1. This rapid positioning device for bridge cantilever utilizes a hydraulic telescopic rod, a movable plate, a connecting rod, and a rotating plate. The hydraulic telescopic rod drives the movable plate to move, which in turn moves the connecting rod on the rotating plate. This allows the connecting rod to move along with another connecting rod on the rotating plate. The two connecting rods then move relative to each other through the connecting plate until the positioning plate rests against both sides of the bridge cantilever, thus limiting and fixing the bridge cantilever and achieving rapid positioning of the bridge cantilever, thereby improving the stability of the equipment.

[0012] 2. This rapid positioning device for bridge cantilever consists of a motor, gears, linkage gear plates, and movable blocks. The motor drives the gears to rotate via the output shaft, causing the gears to move the linkage gear plates on both sides relative to each other. This allows the linkage gear plates to move the movable blocks within the slide groove. The two movable blocks move simultaneously from one end of the slide groove to the other end, and then the movable blocks move and align the cantilever body via the placement frame, facilitating the docking and assembly of the cantilever body. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a cross-sectional structural diagram of the placement rack and positioning plate of this utility model;

[0015] Figure 3 This is a cross-sectional structural diagram of the mounting base and linkage gear plate of this utility model;

[0016] In the diagram: 1. Mounting base; 2. Movable block; 3. Placement frame; 4. Movable groove; 5. Rotating plate; 6. Connecting rod; 7. Movable plate; 8. Hydraulic telescopic rod; 9. Connecting plate; 10. Positioning plate; 11. Electric telescopic rod; 12. Pressure plate; 13. Motor; 14. Gear; 15. Linkage gear plate; 16. Movable frame; 17. Slide groove; 18. Limiting block; 19. Guide rail; 20. Cantilever body. Detailed Implementation

[0017] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0018] like Figure 1-3 As shown, this utility model provides a technical solution: a rapid positioning device for bridge cantilever, including a mounting base 1. The top of the mounting base 1 has two sliding grooves 17, and a movable block 2 is slidably connected to the inner wall of each sliding groove 17. A motor 13 is fixedly connected to the middle position of the bottom of the mounting base 1. The motor 13 is equipped with a gear 14 through its output shaft. The gear 14 is rotatably connected to the bottom of the mounting base 1 through a bearing. Linkage tooth plates 15 are respectively meshed on both sides of the gear 14. The linkage tooth plates 15 are fixedly connected to the bottom of the movable block 2. By setting the motor 13, the motor 13 drives the gear 14 to rotate through its output shaft, so that the gear 14 controls the moving direction of the linkage tooth plates 15. Thus, the linkage tooth plates 15 and the movable block 2 control the movement of the placement frame 3, which facilitates the placement frame 3 to drive the cantilever body 20 for docking.

[0019] The bottom of the mounting base 1 is fixedly connected to the two sides of the slide 17 with limit blocks 18 respectively. A guide rail 19 is fixedly installed between the two relative limit blocks 18. By setting the guide rail 19, the guide rail 19 is fixedly installed between the limit blocks 18. The guide rail 19 limits the movable frame 16 to prevent the movable frame 16 from deviating during the movement.

[0020] The bottom of the movable block 2 is fixedly connected to a movable frame 16 on one side of the linkage tooth plate 15. The movable frame 16 is slidably connected to the guide rail 19. By setting the movable frame 16, the movable frame 16 can move together with the movable block 2. The movable frame 16 at the bottom of the movable block 2 can slide outside the guide rail 19, so that the guide rail 19 limits the movable block 2 through the movable frame 16, making the movement of the movable block 2 more stable.

[0021] The top of the movable block 2 is equipped with a placement rack 3. The placement rack 3 has a movable groove 4 inside. The middle position inside the movable groove 4 is rotatably connected to a rotating plate 5 via a pin. By setting the rotating plate 5, the connecting rod 6 can drive the connecting rod 6 at the other end of the rotating plate 5 to move together, so that the connecting rods 6 on both sides of the rotating plate 5 can drive the connecting plate 9 to move relative to each other.

[0022] The top two sides of the rotating plate 5 are rotatably connected to the connecting rods 6 by pins. The end of each connecting rod 6 away from the rotating plate 5 is rotatably mounted with a movable plate 7 by a pin. The movable plate 7 is slidably connected to the inner wall of the movable groove 4. Two hydraulic telescopic rods 8 are installed on one side of one of the movable plates 7. The hydraulic telescopic rods 8 are fixedly connected to the inner wall of the movable groove 4. By setting the hydraulic telescopic rods 8, the two hydraulic telescopic rods 8 can retract synchronously to drive the movable plate 7 to move, making the movement of the movable plate 7 more stable.

[0023] A connecting plate 9 is fixedly installed on one side of the movable plate 7. The connecting plate 9 is slidably connected to the movable groove 4. A positioning plate 10 is installed on one side of the connecting plate 9 through the placement frame 3. A cantilever body 20 is installed between two opposing positioning plates 10. An electric telescopic rod 11 is installed on the top of the positioning plate 10. A pressure plate 12 is installed on the top of the electric telescopic rod 11. The pressure plate 12 is in close contact with the top of the cantilever body 20. By setting the electric telescopic rod 11, the electric telescopic rod 11 drives the pressure plate 12 to move up and down, so that the pressure plate 12 abuts against the top of the cantilever body 20, thereby improving the stability of the positioning of the cantilever body 20.

[0024] The working principle of this utility model is as follows:

[0025] In use, place the cantilever body 20 on top of the placement frame 3, activate the hydraulic telescopic rod 8, which moves the movable plate 7, causing the movable plate 7 to rotate via the connecting rod 6. This causes the rotating plate 5 to rotate along with the connecting rod 6 at the other end of the rotating plate 5, bringing the two movable plates 7, connecting plate 9, and positioning plate 10 closer together until the positioning plate 10 abuts against both sides of the cantilever body 20, achieving rapid positioning of the cantilever body 20. Activate the electric telescopic rod 11, which moves the pressure plate 12 downwards. The pressure plate 12 is pressed against the top of the cantilever body 20 to fix and limit the cantilever body 20. Then the motor 13 is started. The motor 13 drives the gear 14 to rotate through the output shaft. The gear 14 drives the linkage tooth plates 15 on both sides of the gear 14 to move relative to each other. The linkage tooth plates 15 drive the movable block 2 to slide inside the slide groove 17. Then the movable block 2 drives the cantilever body 20 to move relative to each other through the placement frame 3. As the movable block 2 moves from one end of the slide groove 17 to the other end of the slide groove 17, the cantilever body 20 is docked.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] The preferred embodiments of this patent have been described in detail above. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. A rapid positioning device for a bridge cantilever comprising a mounting seat (1), characterized in that: The mounting seat (1) top is provided with two sliding grooves (17), the inner wall of each sliding groove (17) is slidably connected with a movable block (2), the movable block (2) top is provided with a placing rack (3), the placing rack (3) is internally provided with a movable slot (4), the movable slot (4) is internally provided with a rotating plate (5) at the middle position through a pin shaft, the rotating plate (5) top two sides are rotatably connected with a connecting rod (6) through a pin shaft, each connecting rod (6) is rotatably connected with a movable plate (7) at the end away from the rotating plate (5) through a pin shaft, the movable plate (7) is slidably connected with the inner wall of the movable slot (4), one of the movable plates (7) is provided with two hydraulic telescopic rods (8) on one side, the hydraulic telescopic rods (8) are fixedly connected with the inner wall of the movable slot (4), the movable plate (7) is fixedly provided with a connecting plate (9) on one side, the connecting plate (9) is slidably connected with the movable slot (4), the connecting plate (9) is provided with a positioning plate (10) on one side through the placing rack (3), a cantilever body (20) is installed between two positioning plates (10).

2. A rapid positioning device for a bridge cantilever according to claim 1, characterized in that: The positioning plate (10) top is provided with an electric telescopic rod (11), the electric telescopic rod (11) top is provided with a pressing plate (12), the pressing plate (12) is closely attached to the top of the cantilever body (20).

3. A rapid positioning device for a bridge cantilever according to claim 1, characterized in that: The mounting seat (1) bottom is fixedly connected with a motor (13) at the middle position, the motor (13) is provided with a gear (14) through an output shaft, the gear (14) is rotatably connected with the mounting seat (1) bottom through a bearing.

4. A rapid positioning device for a bridge cantilever according to claim 3, characterized in that: The gear (14) two sides are respectively engaged with a linkage toothed plate (15), the linkage toothed plate (15) is fixedly connected with the movable block (2) bottom.

5. A rapid positioning device for a bridge cantilever according to claim 4, characterized in that: The mounting seat (1) bottom is fixedly connected with a limiting block (18) at both sides of the sliding groove (17), a guide rail (19) is fixedly installed between two limiting blocks (18).

6. A rapid positioning device for a bridge cantilever according to claim 5, characterized in that: The movable block (2) bottom is fixedly connected with a movable frame (16) on one side of the linkage toothed plate (15), the movable frame (16) is slidably connected with the guide rail (19).

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