A steel cage extension and fixing device suitable for drilling holes with a rotary drilling rig

Abstract

The utility model relates to a reinforcement cage extension and fixing device suitable for drilling holes by a rotary drilling rig, comprising a support platform, a through hole for the reinforcement cage to pass through is provided at the center of the support platform, and a shelf assembly for placing the reinforcement cage is provided at an oblique corner of the support platform, a pair of shelf assemblies are moved back and forth along the center direction of the through hole to achieve the placement or lowering of the reinforcement cage, and the shelf assembly is arranged on the upper plane of the support platform; the support platform is formed by welding four channel steels end to end to form a rectangular structure, and the hole wall of the through hole is formed by welding four triangular reinforcement frames to the inner walls of the four end corners of the support platform; the utility model arranges the shelf assembly on the support platform, so that lateral sliding or overturning will not occur when the reinforcement cage is placed; the support platform is formed by the channel steel and the reinforcement frame, so that the contact area between the support platform and the foundation is greatly increased, and it is not easy to overturn due to foundation settlement.

Description

Technical Field

[0001] The utility model belongs to the technical field of building construction, and particularly relates to a reinforcement cage lengthening and fixing device suitable for drilling holes with a rotary drilling machine. Background Art

[0002] At present, in bridge construction projects, steel cages are often installed and extended by passing steel pipes through the middle of the steel cages and placing them on hollow square steels at both ends. The hollow square steels are fixed on the foundation of the construction. At present, this method has the following two main disadvantages: 1. There are no fixing devices on both sides of the steel pipes, which are prone to sliding and causing danger. 2. The square steel has a small area in contact with the ground, and when installing heavy steel cages, it is easy to tilt and overturn due to foundation settlement. Utility Model Content

[0003] The utility model aims to overcome the deficiencies of the prior art and to provide a reinforcement cage extension and fixing device suitable for drilling holes with a rotary drilling rig in order to solve the shortcomings of the current reinforcement cage installation extension and temporary fixation.

[0004] The purpose of the utility model is achieved through the following technical scheme. The steel cage extension and fixing device suitable for rotary drilling rig hole forming includes a support platform, a through hole for the steel cage to pass through is provided at the center of the support platform, and a shelf assembly for placing the steel cage is provided on a diagonal corner of the support platform. A pair of the shelf assemblies can place or lower the steel cage by moving back and forth along the center direction of the through hole. The shelf assembly is arranged on the upper plane of the support platform; the support platform is formed by four channel steels welded end to end to form a rectangular structure, and the hole wall of the through hole is formed by welding four triangular reinforcement frames to the inner walls of the four end corners of the support platform.

[0005] The beneficial effects of the utility model are as follows: compared with the prior art, by arranging a shelf component on the support platform, lateral sliding or overturning will not occur when the steel cage is placed; the support platform is formed by channel steel and a reinforced frame, so that the contact area between the support platform and the foundation is greatly increased, and it is not easy to overturn due to foundation settlement.

[0006] Preferably, the shelving assembly includes a crossbeam and a limit frame, and two limit frames are provided, one of which is fixed at one end of the support platform and close to the through hole, and the other limit frame is fixed at the end corner of the support platform, and the crossbeam is inserted into the two limit frames. Through the arrangement of the above structure, the movement of the crossbeam is more convenient, and the crossbeam will not overturn when placing the steel cage.

[0007] Preferably, limit blocks are respectively provided at both ends of the beam, one of which is fixed on the upper end surface of the beam and located at the end of the through hole, and the other is fixed on the upper end surface of the beam and located at the end corner of the support platform; by adding limit blocks on the beam, the beam can cooperate with the limit frame to achieve a good limiting effect when moving back and forth to place or lower the steel cage, which is convenient for construction workers to operate and can prevent construction accidents.

[0008] Preferably, the length of the crossbeam is twice the distance between the two limit frames; this makes it easier for construction workers to operate the crossbeam.

[0009] Preferably, the support platform is also provided with a limiting assembly used as a conduit fixing device for casting the steel cage, and the limiting assembly includes two I-beams, and the two I-beams are respectively fixed on the upper end surfaces on both sides of the support platform, and the height of the I-beams is higher than the height of the shelving assembly; through the arrangement of the above structure, after the steel cage is installed, the conduit fixing device can be directly placed on the support platform, and at this time the support platform can also serve as the basis of the temporary conduit fixing device.

[0010] Preferably, two lifting ears are provided on the upper end surface of the support platform, and the two lifting ears are respectively located on the sides of the shelf assembly; this facilitates the lifting and transportation of the support platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional structural schematic diagram of a reinforcement cage extension and fixing device of the utility model.

[0012] The numbers in the accompanying drawings are: 1, support platform; 2, through hole; 3, shelf assembly; 4, I-beam; 5, lifting ear; 11, channel steel; 12, reinforcement frame; 31, crossbeam; 32, limit frame; 33, limit block. DETAILED DESCRIPTION

[0013] The following is a detailed introduction to the utility model in conjunction with the accompanying drawings: Figure 1 As shown, the utility model includes a support platform 1, a through hole 2 for a steel cage to pass through is provided at the center of the support platform 1, and a shelf assembly 3 for placing the steel cage is provided at a diagonal corner of the support platform 1. A pair of shelf assemblies 3 can place or lower the steel cage by moving back and forth along the center direction of the through hole 2. The shelf assembly 3 is arranged on the upper plane of the support platform 1; the support platform 1 is formed by four channel steels 11 welded end to end to form a rectangular structure, and the hole wall of the through hole 2 is formed by welding four triangular reinforcement frames 12 to the inner walls of the four end corners of the support platform 1.

[0014] The shelf assembly 3 includes a crossbeam 31 and a limit frame 32. Two limit frames 32 are provided, one of which is fixed at one end of the support platform 1 and close to the through hole 2 by welding, and the other limit frame 32 is fixed at the end corner of the support platform 1 by welding, and the crossbeam 31 is inserted into the two limit frames 32.

[0015] Limit blocks 33 are respectively provided at both ends of the beam 31, one of which is fixed on the upper end surface of the beam 31 by welding and is located at the end of the through hole 2, and the other limit block 33 is fixed on the upper end surface of the beam 31 by welding and is located at the end corner of the support platform 1.

[0016] The length of the crossbeam 31 is twice the distance between the two limiting frames 32 .

[0017] The support platform 1 is also provided with a limit assembly used as a fixing device for the steel cage casting conduit. The limit assembly includes two I-beams 4, which are respectively fixed on the upper end surfaces on both sides of the support platform 1, and the height of the I-beams 4 is higher than the height of the shelf assembly 3.

[0018] Two lifting ears 5 are also provided on the upper end surface of the supporting platform 1 , and the two lifting ears 5 are respectively located on the sides of the shelf assembly 3 .

[0019] The working principle of the utility model is as follows: the steel cage extension fixing device is placed flatly on the pile driver hole. When the steel cage is installed and lowered, the cross beams 31 on both sides of the support platform 1 are pulled outwards. After one section of the steel cage is lowered and welded or mechanically connected with the next section of the steel cage, the cross beams 31 on both sides of the support platform 1 are pushed in to clamp the steel cage. After the welding or mechanical connection is completed, the cross beams 31 on both sides of the support platform 1 are pulled outwards and the operation is repeated.

[0020] The present invention is not limited to the above-mentioned embodiments. Regardless of any changes in shape or material composition, any structural design provided by the present invention is a variation of the present invention and should be considered within the protection scope of the present invention.

Claims

1. A steel cage extension and fixing device suitable for drilling holes with a rotary drilling rig, comprising a support platform (1), characterized in that: A through hole (2) for a steel cage to pass through is provided at the center of the support platform (1), and a placing assembly (3) for placing the steel cage is provided at a diagonally opposite corner of the support platform (1). A pair of the placing assemblies (3) can place or lower the steel cage by moving back and forth along the center direction of the through hole (2). The placing assemblies (3) are arranged on the upper plane of the support platform (1); the support platform (1) is formed by four channel steels (11) welded end to end to form a rectangular structure, and the hole wall of the through hole (2) is formed by welding four triangular reinforcement frames (12) to the inner walls of the four end corners of the support platform (1).

2. The reinforcement cage extension and fixing device suitable for drilling holes by a rotary drilling rig according to claim 1 is characterized in that: The shelf assembly (3) comprises a crossbeam (31) and a limiting frame (32), wherein two limiting frames (32) are provided, wherein one of the limiting frames (32) is fixed at one end of the support platform (1) and close to the through hole (2), and the other limiting frame (32) is fixed at an end corner of the support platform (1), and the crossbeam (31) is inserted into the two limiting frames (32).

3. The reinforcement cage extension and fixing device suitable for drilling holes by a rotary drilling rig according to claim 2 is characterized in that: Limit blocks (33) are respectively provided at both ends of the cross beam (31), one of the limit blocks (33) being fixed on the upper end surface of the cross beam (31) and located at the end of the through hole (2), and the other limit block (33) being fixed on the upper end surface of the cross beam (31) and located at the end corner of the support platform (1).

4. The reinforcement cage extension and fixing device suitable for drilling holes by a rotary drilling rig according to claim 2 is characterized in that: The length of the crossbeam (31) is twice the distance between the two limiting frames (32).

5. The reinforcement cage extension and fixing device suitable for drilling holes by a rotary drilling rig according to claim 1 is characterized in that: The support platform (1) is also provided with a limit assembly used as a fixing device for the steel cage casting conduit, and the limit assembly includes two I-beams (4). The two I-beams (4) are respectively fixed on the upper end surfaces on both sides of the support platform (1), and the height of the I-beams (4) is higher than the height of the shelf assembly (3).

6. The reinforcement cage extension and fixing device suitable for drilling holes by a rotary drilling rig according to claim 1 is characterized in that: Two lifting ears (5) are also provided on the upper end surface of the support platform (1), and the two lifting ears (5) are respectively located on the side of the shelf assembly (3).

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