Template lifting device for bridge wet joint construction

Abstract

The utility model relates to the technical field of bridge construction, and provides a template lifting device for bridge wet joint construction. Comprising a rack, a rolling cage arranged in the center of the top of the rack, a rotating rod penetrating through the center of the rolling cage and a pull rope with one end fixedly connected with the rolling cage and the other end connected with a template. The rolling cage is driven to rotate by rotating the rotating rod, so that the number of turns of the pull rope wound on the rolling cage is controlled to hoist the formwork, the formwork is rapidly mounted and dismounted, manpower and time consumption in the construction process is reduced, the structure is simple, assembling is easy, the weight is light, moving is convenient, the construction cost can be reduced, and the construction efficiency can be improved.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction technology, and in particular to a formwork lifting device for the construction of wet joints in bridges. Background Technology

[0002] In bridge construction, wet joint construction is a crucial step in connecting precast beam segments to piers, and its quality directly impacts the stability and durability of the bridge. Traditional wet joint construction methods typically involve on-site concrete pouring, requiring extensive use of formwork and support structures. The installation and dismantling of these formwork and support structures are cumbersome, time-consuming, labor-intensive, and costly. Furthermore, due to the unique environment of bridge construction, such as working at heights and limited space, traditional formwork lifting devices often fail to meet the requirements for construction flexibility and safety.

[0003] With the rapid development of modern bridge engineering, the requirements for construction efficiency and cost control are becoming increasingly stringent. There is an urgent need to develop a formwork lifting device for bridge wet joint construction to improve efficiency, reduce costs, and simplify the operation process. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a formwork lifting device for bridge wet joint construction, thereby improving the efficiency of wet joint construction, reducing costs, and simplifying the operation process.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A formwork lifting device for bridge wet joint construction includes: a frame, a roller cage located at the top center of the frame, a rotating rod passing through the center of the roller cage, and a pull rope with one end fixedly connected to the roller cage and the other end connected to the formwork; the frame is a rectangular frame with its center positioned above the bridge joint; the roller cage is a columnar frame; the frame and the roller cage are rotatably connected; the roller cage is fixedly connected to the rotating rod; both ends of the rotating rod are provided with bent portions, and a gap is left between the bent portions and the frame.

[0007] Preferably, two bearings are provided at each of the top ends of the frame, with the inner ring of the bearing sleeved with the rotating rod, and the rotating rod can rotate along the bearing axis.

[0008] Preferably, the frame includes: a rectangular frame formed by connecting several steel bars end to end, several legs provided at the bottom of the rectangular frame, and several longitudinal, transverse and diagonal supporting steel bars between the legs.

[0009] Preferably, the rolling cage includes: two round steel bars welded end to end, and several threaded steel bars of equal length connecting the two round steel bars.

[0010] Preferably, the bent portion of the rotating rod is L-shaped, the end of the bent portion is parallel to the rotating rod, and a sleeve is rotatably connected to the end of the bent portion.

[0011] Preferably, the bottom of the support leg is provided with a foot support.

[0012] This utility model discloses a formwork lifting device for the construction of wet joints in bridges, which has the following beneficial effects.

[0013] This utility model includes: a frame, a roller cage located at the top center of the frame, a rotating rod passing through the center of the roller cage, and a pull rope with one end fixedly connected to the roller cage and the other end connected to the template. By rotating the rotating rod, the roller cage is driven to rotate, thereby controlling the number of turns of the pull rope around the roller cage for template lifting. This enables rapid installation and disassembly of the template, reduces manpower and time consumption during construction, has a simple structure that is easy to assemble, is lightweight and easy to move, and can reduce construction costs and improve construction efficiency. Attached Figure Description

[0014] Figure 1 This is a front view structural diagram of the present invention.

[0015] Figure 2 This is a side view of the structure of this utility model.

[0016] In the attached diagram: 1-frame; 2-roller; 3-rotating rod; 4-bearing; 5-sleeve; 6-pull rope; 7-foot support. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Example

[0019] Reference Figure 1 and Figure 2A formwork lifting device for bridge wet joint construction includes: a frame 1, a roller cage 2 located at the top center of the frame 1, a rotating rod 3 passing through the center of the roller cage 2, and a pull rope 6 with one end fixedly connected to the roller cage 2 and the other end connected to the formwork; the frame 1 is a rectangular frame, with its center positioned above the bridge joint; the roller cage 2 is a columnar frame; the frame 1 and the roller cage 2 are rotatably connected; the roller cage 2 is fixedly connected to the rotating rod 3; both ends of the rotating rod 3 are provided with bent parts, with a gap between the bent parts and the frame 1. During use, the bent parts drive the rotating rod 3 to rotate, thereby driving the roller cage 2 to rotate, thus controlling the number of turns of the pull rope 6 around the roller cage 2 for formwork lifting.

[0020] Reference Figure 1 Preferably, in this embodiment, two bearings 4 are respectively provided at both ends of the top of the frame 1. The inner ring of the bearing 4 is sleeved with the rotating rod 3. The connection between the inner ring of the bearing 4 and the rotating rod 3 can be an interference fit, or the inner ring of the bearing 4 and the rotating rod 3 can be welded together. The rotating rod 3 can rotate around the axis of the bearing 4. Alternatively, the frame 1 and the rotating rod 3 can also be connected by pulleys. The pulleys are divided into inner pulleys and outer pulleys. The inner pulley is placed inside the outer pulley. The outer side of the outer pulley is welded to the frame 1, and the inner side of the inner pulley is sleeved with the rotating rod 3.

[0021] Reference Figure 1 and Figure 2 Preferably, in this embodiment, the frame 1 includes: a rectangular frame formed by connecting several steel bars end to end, and four legs provided at the bottom of the rectangular frame. There are four longitudinal, two transverse and four diagonal supporting steel bars between the legs. In this embodiment, the rectangular frame and the legs are made of steel bars with a diameter larger than the supporting steel bars, and the longitudinal, transverse and diagonal supporting steel bars are firmly welded to the legs.

[0022] Reference Figure 1 and Figure 2 As a preferred embodiment, the roller cage 2 includes: two round steel bars welded at both ends, and eight threaded steel bars of equal length connecting the two round steel bars. The rotating rod 3 is welded to the two round steel bars by steel bars. The eight threaded steel bars of equal length are arranged at equal intervals. When it is necessary to restrict the rotation of the roller cage 2, it is only necessary to use a steel bar to pass through the roller cage 2 radially and place it on the top of the frame 1. The steel bar that restricts the rotation of the roller cage 2 can also be directly fixed to the frame 1 by a tie or wire.

[0023] Reference Figure 1Preferably, in this embodiment, the bent part of the rotating rod 3 is L-shaped, and the end of the bent part is parallel to the rotating rod 3. The end of the bent part is rotatably connected to the sleeve 5, which facilitates the operation of the roller 2 by the construction personnel. The rotating rod 3 should be made of the same steel bar and bent. Before bending the steel bar, the inner ring of the bearing 4 should be connected to the steel bar first and then bent. The bearing 4 should be maintained regularly and lubricated. During the construction process, care should be taken to prevent foreign objects such as concrete block debris from entering, which would increase the friction.

[0024] Reference Figure 1 Preferably, in this embodiment, the bottom of the support leg is provided with a foot support 7 to adjust the height of the frame 1. The foot support 7 can also increase the welding points between the support steel bar and the support leg, improve the welding stability between the support steel bar and the support leg, and thus improve the overall stability of the frame 1.

[0025] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Substitutions may include replacements for some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the scope of protection of this utility model.

Claims

1. A form hoisting device for bridge wet joint construction, characterized in that, Include: Frame (1), cage (2) is arranged in the top center of frame (1), rotating rod (3) through the center of cage (2), pull rope (6) connected with cage (2) at one end and connected with template at the other end; The frame (1) is a rectangular frame, and the center of the frame (1) is placed above the bridge joint; The cage (2) is a cylindrical frame; The frame (1) is rotatably connected with the cage (2); The cage (2) is fixedly connected with the rotating rod (3); The two ends of the rotating rod (3) are provided with a bending part, and a gap is left between the bending part and the frame (1); The cage (2) comprises: two round steel bars welded end to end, and a plurality of equal length threaded steels connecting the two round steels; The frame (1) is connected with a steel bar through a bandage, and when the cage (2) needs to be limited to rotate, the steel bar is radially penetrated out of the cage (2) and placed on the top of the frame (1).

2. The form hoisting device for bridge wet joint construction according to claim 1, characterized in that, Two bearings (4) are respectively arranged at the two ends of the top of the frame (1), the inner ring of the bearing (4) is sleeved with the rotating rod (3), and the rotating rod (3) can rotate along the axis of the bearing (4).

3. The form hoisting device for bridge wet joint construction of claim 1, wherein The frame (1) comprises: a rectangular frame composed of a plurality of steel bars connected end to end, a plurality of legs arranged at the bottom of the rectangular frame, and a plurality of longitudinal, transverse and inclined support steels arranged between the legs.

4. The form hoisting device for bridge wet joint construction of claim 1, wherein The bending part of the rotating rod (3) is L-shaped, the end of the bending part is parallel to the rotating rod (3), and the end of the bending part is rotatably connected with a sleeve (5).

5. The form hoisting device for bridge wet joint construction of claim 3, wherein The bottom of the leg is provided with a foot support (7).

Images