Hoop device for pier construction

Abstract

The utility model discloses a hoop device for pier column construction, including climbing hoop and two fixed hoops, the climbing hoop is connected with the fixed hoop through telescopic part, is used for driving the fixed hoop along the pier column and climbing through telescopic part, two fixed hoops are connected as an organic whole, are used for with the pier column connection as the climbing hoop provides the support, the utility model discloses through setting two fixed hoops and a climbing hoop and realizes the climbing of support frame, pouring formwork, and through the draw bar simultaneously realizes the fixed of fixed hoop or climbing hoop and the pier column, need not pre -buried bolt, has greatly simplified the pier column construction process.

Description

Technical Field

[0001] This utility model relates to the technical field of bridge construction equipment, and in particular to a clamping device for pier construction. Background Technology

[0002] The construction of piers and cap beams for highway and railway bridges is one of the main components of bridge construction. Piers range in height from a few meters to tens, hundreds, or even several hundred meters, and are numerous. The construction of high piers and cap beams involves working at heights, which is one of the most challenging aspects of bridge construction.

[0003] Currently, the mainstream construction methods for high bridge piers include layered formwork construction and layered climbing formwork construction. When the pier height is not too high, layered formwork construction technology is mostly used. First, a scaffolding platform or a fixed formwork platform is erected, and ground truck cranes or crawler cranes are used for scaffolding erection, steel bar hoisting and formwork assembly and disassembly. Concrete is pumped into the formwork using a truck pump. When the pier is high, the high scaffolding process and formwork construction technology are not very suitable. Hydraulic climbing formwork technology is usually used, such as the patent with publication number CN111519545A, which discloses an integrated construction platform for piers and cap beams and its construction method. It pre-embeds anchor bolts on the pier body to fix the pier frame and provide support for the lifting of the formwork.

[0004] The method of fixing the hoop frame by pre-embedded anchor bolts has the following drawbacks: the ends of the anchor bolts protrude from the pier column, and the excess part needs to be manually removed after the pier column is formed, which increases the construction process of the pier column and also increases the construction cost. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a clamping device for pier construction. By setting two fixed clamps and one climbing clamp, the support frame and the casting template can be climbed. At the same time, the fixed clamps or climbing clamps are fixed to the pier through the tie rod. No pre-embedded bolts are required, which greatly simplifies the pier construction process.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A clamping device for pier construction includes a climbing clamp and two fixed clamps. The climbing clamp is connected to the fixed clamps via a telescopic member and is used to drive the fixed clamps to climb along the pier through the telescopic member.

[0008] Two fixed clamps are connected as one unit and used to connect with the pier column to provide support for the climbing clamps.

[0009] Furthermore, the climbing clamp includes a grid frame, on which a first horizontal tie rod and a first longitudinal tie rod are provided that are perpendicular to each other.

[0010] Furthermore, the fixing clamp includes a rectangular frame, on which a second transverse tie rod and a second longitudinal tie rod perpendicular to each other are provided.

[0011] Furthermore, two second transverse tie rods are provided, and four second longitudinal tie rods are provided.

[0012] Furthermore, each side of the rectangular frame is formed by welding two channel steels, with a gap between the two channel steels, and a matching square tube is provided in the gap, with the second longitudinal tie rod disposed inside the square tube.

[0013] Furthermore, the square tube is welded and fixed to the channel steel.

[0014] Furthermore, the two fixed clamps are connected by a connecting rod, and connecting plates are fixedly provided at both ends of the connecting rod, and the connecting plates are fixedly connected to the fixed clamps.

[0015] Furthermore, the connecting plate is connected to the fixing clamp by bolts.

[0016] Furthermore, the telescopic component is a hydraulic cylinder. The cylinder body is fixed to two fixed clamps, and the end of the telescopic rod of the hydraulic cylinder is fixed to a climbing clamp.

[0017] The beneficial effects of this utility model are:

[0018] This utility model achieves the climbing of the support frame and the casting template by setting two fixed clamps and one climbing clamp. At the same time, the fixed clamps or climbing clamps are fixed to the pier column by tie rods, eliminating the need for pre-embedded bolts and greatly simplifying the pier column construction process. Attached Figure Description

[0019] Figure 1 This is a diagram showing the usage state of the clamp device for pier construction in this utility model embodiment;

[0020] Figure 2 for Figure 1 Enlarged view of point A in the middle section;

[0021] Figure 3 Top view of the fixing clamp;

[0022] Figure 4 A top view of the climbing clamp;

[0023] In the diagram, 1. Climbing clamp; 2. Fixed clamp; 3. Well frame; 4. First transverse tie rod; 5. First longitudinal tie rod; 6. Rectangular frame; 7. Second transverse tie rod; 8. Second longitudinal tie rod; 9. Channel steel; 10. Connecting rod; 11. Expansion joint; 12. Pier column. Detailed Implementation

[0024] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] See Figures 1-4 This utility model provides a technical solution:

[0026] Example:

[0027] like Figures 1-4 As shown, a clamping device for pier construction includes a climbing clamp 1 and two fixed clamps 2. The climbing clamp 1 is connected to the fixed clamps 2 via a telescopic member 11, and is used to drive the fixed clamps 2 to climb along the pier 12 via the telescopic member 11. The telescopic member 11 is a hydraulic cylinder. The cylinder body of the hydraulic cylinder is fixed to the two fixed clamps 2 respectively, and the end of the telescopic rod of the hydraulic cylinder is fixed to the climbing clamp 1.

[0028] Two fixed clamps 2 are connected as one unit and are used to connect with the pier column 12 to provide support for the climbing clamp 1.

[0029] The climbing clamp 1 includes a grid frame 3, on which a first horizontal tie rod 4 and a first longitudinal tie rod 5 are provided, which are perpendicular to each other.

[0030] The fixing clamp 2 includes a rectangular frame 6, on which a second transverse tie rod 7 and a second longitudinal tie rod 8 are provided, which are perpendicular to each other.

[0031] Two second transverse tie rods 7 are provided, and four second longitudinal tie rods 8 are provided.

[0032] Each side of the rectangular frame 6 is formed by welding two channel steels 9. There is a gap between the two channel steels 9, and a square tube adapted to fit is provided in the gap. The square tube is welded and fixed to the channel steel 9, and the second longitudinal tie rod 8 is set in the square tube.

[0033] The two fixed clamps 2 are connected by a connecting rod 10. The two ends of the connecting rod 10 are respectively fixed with connecting plates, and the connecting plates are fixedly connected to the fixed clamps 2 by bolts.

[0034] 1. The climbing clamp 1 is connected to the support frame, which is used to install the hoist, winch, and pier column 12 casting template. 2. The climbing clamp 1 and two fixed clamps 2 are arranged sequentially from top to bottom. 3. Both the grid frame 3 and the rectangular frame 6 are configured with two parallel sides slidingly connected to two other parallel sides. In this embodiment, the rectangular frame 6 is used as an example: the upper and lower sides of the rectangular frame 6 are the aforementioned channel steel 9, and fixed blocks are set on the upper and lower sides. The two second longitudinal tie rods 8 are connected by two coaxial fixed blocks, thus forming the rectangular frame 6. When the second longitudinal tie rods 8 are retracted / tightened, the upper and lower sides of the rectangular frame 6 move closer to each other.

[0035] In use, the two fixing clamps 2 are fixed to the pier column 12. The fixing method is: tightening by tie rods. The tie rods have external threads at both ends and are fitted with nuts. Tightening the nuts will bring them closer together. In this embodiment, two second transverse tie rods 7 and four second longitudinal tie rods 8 are provided. Two of the longitudinal tie rods are located on both sides of the pier column 12, and the other two second longitudinal tie rods 8 pass through the pier column 12 (the pier column 12 has through holes for the second longitudinal tie rods 8 to pass through).

[0036] When the two fixed clamps 2 are fixed to the pier 12, the telescopic component 11 is in a retracted state, and the climbing clamp 1 is tightly attached to the fixed clamp 2 located in the middle. When the telescopic component 11 extends, the piston rod drives the climbing clamp 1 to rise along the pier 12. When the pier 12 rises to its position, the climbing clamp 1 is fixed by the first transverse tie rod 4 and the first longitudinal tie rod 5. Then, the second transverse tie rod 7 and the second longitudinal tie rod 8 are released, and the two second longitudinal tie rods 8 that pass through the pier 12 are removed. At this time, the hydraulic cylinder retracts. Since the end of the piston rod is fixed, the piston rod drives the cylinder body to move upward, that is, drives the two fixed clamps 2 to rise. After the two fixed clamps 2 rise to their position, the aforementioned fixing, releasing, and rising actions of the climbing clamp 1 are repeated to achieve continuous climbing action.

[0037] The aforementioned tie rods through the pier 12 can be eliminated. The pier 12 is tightened only by external tie rods, so that the parallel sides of the rectangular frame 6 are in close contact with the outer surface of the pier 12. The pier 12 is fixed by friction between the four sides of the rectangular frame 6 and the outer surface of the pier 12.

[0038] This utility model achieves the climbing of the support frame and the casting template by setting two fixed clamps and one climbing clamp. At the same time, the fixed clamps or climbing clamps are fixed to the pier column by tie rods, eliminating the need for pre-embedded bolts and greatly simplifying the pier column construction process.

[0039] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A clamping device for pier construction, characterized in that: It includes a climbing clamp and two fixed clamps. The climbing clamp is connected to the fixed clamp via a telescopic component, and is used to drive the fixed clamp to climb along the pier column via the telescopic component. Two fixed clamps are connected as one unit and used to connect with the pier column to provide support for the climbing clamps.

2. The clamping device for pier construction according to claim 1, characterized in that: The climbing clamp includes a grid frame, on which a first horizontal tie rod and a first longitudinal tie rod are provided that are perpendicular to each other.

3. The clamping device for pier construction according to claim 1, characterized in that: The fixing clamp includes a rectangular frame, on which a second transverse tie rod and a second longitudinal tie rod perpendicular to each other are provided.

4. The clamping device for pier construction according to claim 3, characterized in that: Two second transverse tie rods are provided, and four second longitudinal tie rods are provided.

5. The clamping device for pier construction according to claim 4, characterized in that: Each side of the rectangular frame is formed by welding two channel steels, with a gap between the two channel steels. A square tube adapted to fit the gap is installed in the gap, and the second longitudinal tie rod is installed inside the square tube.

6. The clamping device for pier construction according to claim 5, characterized in that: The square tube is welded and fixed to the channel steel.

7. The clamping device for pier construction according to claim 1, characterized in that: The two fixed clamps are connected by a connecting rod, and a connecting plate is fixedly provided at both ends of the connecting rod. The connecting plate is fixedly connected to the fixed clamp.

8. The clamping device for pier construction according to claim 7, characterized in that: The connecting plate is connected to the fixing clamp by bolts.

9. The clamping device for pier construction according to claim 1, characterized in that: The telescopic component is a hydraulic cylinder.

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