Verticality control equipment for thin-wall hollow pier

Abstract

The utility model relates to the technical field of highway bridge construction, and discloses a thin-wall hollow pier perpendicularity control device which comprises a self-climbing formwork device, the self-climbing formwork device comprises an operation platform, the operation platform is provided with a winding reel, the winding reel is provided with a steel wire rope in a winding mode, the steel wire rope is arranged on the operation platform in a penetrating mode, and the bottom end of the steel wire rope is connected with a plumb bob. A limiting part is arranged on the operation platform and located at the bottom end of the winding reel, the limiting part is used for vertically lowering the steel wire rope along the midpoint of the winding reel, the limiting part comprises a movable pulley block and a fixed pulley block which are sequentially arranged between the winding reel and the operation platform, the movable pulley block is horizontally and slidably connected to the rack, and the fixed pulley block is fixed to the position, located at the midpoint of the winding reel, of the rack; a reset piece is connected between the movable pulley block and the rack and used for enabling the movable pulley block to be reset in the middle of the rack, and the effect of preventing the perpendicularity from easily deviating in the pier body pouring process is achieved.

Description

Technical Field

[0001] This utility model relates to the field of highway bridge construction technology, specifically to a device for controlling the verticality of thin-walled hollow piers. Background Technology

[0002] Thin-walled hollow piers consist of a solid bottom section, a hollow middle section and a solid top section, and a cap at the very top. When pouring concrete for hollow piers, the verticality of the pier walls is a key factor in ensuring the stability and safety of the bridge structure. If the verticality is not up to standard, the pier may tilt, which in turn will affect the overall balance of the bridge and cause safety accidents.

[0003] Chinese utility model patent CN220643873U discloses a hydraulic self-climbing formwork device for thin-walled hollow bridge piers, including an upper frame assembly, a lower frame assembly, and an operating platform. This device performs layered casting of the hollow pier. After casting, the lower frame's cylinders and support structure control the platform and the upper frame to move upwards on the pier. After the movement is complete, the climbing formwork device is fixed to the pier, and the molds located around the pier are reassembled at the top of the pier to allow for the next layer of casting. However, improper operation during mold assembly can easily lead to mold assembly deviations, resulting in deviations in the verticality of the pier after casting. Based on this, the following improvements are proposed. Summary of the Invention

[0004] The present invention aims to provide a verticality control device for thin-walled hollow piers to solve the problem of easy deviation in the verticality of the pier body.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a thin-walled hollow pier verticality control device, wherein an operating platform is equipped with a winding drum, the winding drum is wound with a steel wire rope, the steel wire rope is threaded through the operating platform and connected to a plumb bob at the bottom end, and a limiting part is provided at the bottom end of the operating platform at the winding drum, the limiting part being used to make the steel wire rope drop vertically along the midpoint of the winding drum.

[0006] The beneficial effects of this solution are as follows: by setting a limiting part, the limiting part restricts the lowering position of the wire rope, which can ensure that the wire rope with the plumb bob is always lowered vertically from the limiting part, and also prevent the wire rope from swinging, thus preventing the verticality deviation during the pier pouring.

[0007] Furthermore, it also includes a frame installed on the operating platform, on which a motor and a gearbox are mounted. A rotating shaft is rotatably connected to the top of the frame. The motor is connected to the input end of the gearbox, and the rotating shaft is coaxially connected to the output end of the gearbox. A winding drum is fixed to the rotating shaft.

[0008] Furthermore, the limiting part includes a movable pulley group and a fixed pulley group arranged sequentially between the winding drum and the operating platform. The movable pulley group is horizontally slidably connected to the frame, and the fixed pulley group is fixed to the frame at the midpoint of the winding drum. A reset member is connected between the movable pulley group and the frame, and the reset member is used to make the movable pulley group return to the middle of the frame.

[0009] The beneficial effects of this solution are as follows: When the wire rope is lowered, as it moves back and forth on the drum, when it deviates from the center point of the drum, the force on the movable pulley block shifts on the limit rod. At this time, the springs on both sides of the movable pulley deform, and the springs at both ends generate elastic force and tension force respectively, so that the movable pulley block moves towards the vertical line of the drum, thus allowing the wire rope to pass smoothly through the fixed pulley assembly. This reduces the wear problem of the fixed pulley and the wire rope, and ensures that the wire rope will not sway during the lowering process. In addition, it also ensures that the wire rope remains centered during lowering and does not cause changes in distance between it and the hollow pier body.

[0010] Furthermore, sliders are protruding on both sides of the movable pulley block, and the frame has grooves for the sliders to be inserted. The reset component is connected between the two ends of the movable pulley and the frame.

[0011] Furthermore, the reset element is set as a spring, with the springs connected to both ends of the movable pulley being symmetrical. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the self-climbing formwork device according to an embodiment of the present invention.

[0013] Figure 2 This is a schematic diagram of the frame and winding drum structure of an embodiment of the present utility model.

[0014] Figure 3 This is a cross-sectional structural diagram of the limiting part in an embodiment of the present utility model. Detailed Implementation

[0015] The following detailed description illustrates the specific implementation method:

[0016] The reference numerals in the accompanying drawings include: self-climbing formwork device 1, operating platform 2, frame 3, motor 31, gearbox 32, rotating shaft 33, winding drum 34, wire rope 341, plumb bob 342, limiting part 4, movable pulley block 41, spring 411, and fixed pulley block 42.

[0017] Example

[0018] Verticality control equipment for thin-walled hollow piers, such as Figures 1-3As shown, the self-climbing formwork device 1 has an operating platform 2 horizontally installed at its top. The operating platform 2 is equipped with a frame 3. The top of the frame 3 is rotatably connected to a rotating shaft 33. The frame 3 is also equipped with a motor 31 and a gearbox 32. The motor 31 is connected to the input end of the gearbox 32, and the rotating shaft 33 is coaxially connected to the output end of the gearbox 32. The motor 31 drives the gearbox 32 to rotate. The rotating shaft 33 is coaxially connected to a winding drum 34, which is fixedly connected to the rotating shaft 33. A steel wire rope 341 is wound on the outer ring of the winding drum 34. The operating platform 2 is located directly below the frame 3 and has a through hole for the steel wire rope 341 to pass through. A plumb bob 342 is connected to the bottom end of the steel wire rope 341.

[0019] like Figures 2-3 As shown, the portion of the frame 3 located between the winding drum 34 and the operating platform 2 is sequentially welded with a limit rod and a fixing rod. The central axes of both the limit rod and the fixing rod coincide with the perpendicular bisector of the axis of the winding drum 34. A movable pulley block 41 is slidably connected to the limit rod in the horizontal direction. Sliding blocks are fixedly fixed on both sides of the movable pulley block 41. A groove for the sliding blocks to be inserted is opened on the opposite side of the limit rod. Springs 411 are connected between both ends of the movable pulley block 41 and the frame 3. The springs 411 at both ends of the movable pulley block 41 are symmetrical. When the movable pulley block 41 is not under force, the springs 411 on both sides of the movable pulley naturally extend and push the movable pulley block 41 against the middle position of the limit rod. A fixed pulley block 42 is fixedly installed at the midpoint of the fixing rod. The wire rope 341 passes through the movable pulley in sequence. When the wire rope 341 is lowered, as it moves back and forth on the drum 34, the movable pulley group 41 is deviated from the midpoint of the drum 34. This causes the movable pulley group 41 to shift under the force of the limit rod. At this time, the springs 411 on both sides of the movable pulley deform, generating elastic and tensile forces respectively, causing the movable pulley group 41 to move towards the perpendicular bisector of the drum 34. This allows the wire rope 341 to pass smoothly through the fixed pulley group 42, reducing wear on the fixed pulley and wire rope 341, ensuring the wire rope 341 does not sway during lowering, and maintaining its centered position during lowering to prevent changes in distance from the hollow pier body.

[0020] Its working principle is as follows: When the self-climbing formwork device 1 is splicing the top mold, improper operation may cause deviation, which will lead to inconsistent verticality of the pier after the pier body is poured. Therefore, it is necessary to check the consistency of verticality between the self-climbing formwork device 1 and the pier body between pouring. When the self-climbing formwork device 1 moves upward, the motor 31 drives the winding drum 34 to rotate and retracts the plumb bob 342 to the top. After the mold is spliced, the plumb bob 342 is lowered to the bottom of the pier. At this time, the distance between the top and bottom of the wire rope 341 and the pier body is measured by the total station to determine the verticality. When the verticality is inconsistent, the mold is re-spliced ​​until the verticality is consistent.

[0021] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A verticality control device for thin-walled hollow piers, characterized in that: The operating platform is equipped with a winding drum, on which a steel wire rope is wound. The steel wire rope is threaded through the operating platform and connected to a plumb bob at the bottom. The operating platform is provided with a limit part at the bottom of the winding drum, which is used to allow the steel wire rope to be lowered vertically along the midpoint of the winding drum.

2. The thin-walled hollow pier verticality control device according to claim 1, characterized in that: It also includes a frame installed on the operating platform, on which a motor and a gearbox are mounted. A rotating shaft is rotatably connected to the top of the frame. The motor is connected to the input end of the gearbox, and the rotating shaft is coaxially connected to the output end of the gearbox. A winding drum is fixed to the rotating shaft.

3. The thin-walled hollow pier verticality control device according to claim 2, characterized in that: The limiting part includes a movable pulley group and a fixed pulley group arranged sequentially between the winding drum and the operating platform. The movable pulley group is horizontally slidably connected to the frame, and the fixed pulley group is fixed to the frame at the midpoint of the winding drum. A reset member is connected between the movable pulley group and the frame, and the reset member is used to make the movable pulley group return to the middle of the frame.

4. The thin-walled hollow pier verticality control device according to claim 3, characterized in that: The movable pulley block has protruding sliders on both sides, and the frame has grooves for the sliders to be inserted. The reset component is connected between the two ends of the movable pulley and the frame.

5. The thin-walled hollow pier verticality control device according to claim 4, characterized in that: The reset element is a spring, and the springs connected to both ends of the movable pulley are symmetrical.

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