Operation device for lowering reinforcement cage

Abstract

The utility model relates to the technical field of foundation construction, in particular to an operation device for lowering a reinforcement cage, which comprises an operation frame capable of being inserted into anchoring steel bars of the reinforcement cage, the operation frame is a square frame, and the square frame is composed of four vertically arranged steel pipes and a plurality of steel bars welded among the four steel pipes. Scale marks are arranged on the steel pipe. A crane is used for hoisting a reinforcement cage to be put into a pile hole and hoisting the reinforcement cage to a pile hole opening, then a steel pipe of a handling frame is inserted into an anchoring main reinforcement of the reinforcement cage, the reinforcement cage and the handling frame are put into the pile hole together, and at the moment, the upper portion of the handling frame protrudes out of the pile hole; the elevation position of the reinforcement cage can be known through the scale marks on the steel pipe, the installation position of the reinforcement cage is judged through the position state of the operation frame, when the installation position of the reinforcement cage is not regular, the operation frame is not regular, the position of the operation frame is slowly moved at a drilling opening, and the steel pipe of the operation frame can drive the reinforcement cage to be adjusted till the reinforcement cage is located at the design position.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation construction, in particular to an operating device for lowering a steel cage. Background Art

[0002] A bored pile is a pile that is made by forming a pile hole in the foundation soil at the construction site through mechanical drilling, steel pipe squeezing or manual excavation, and then placing a steel cage inside and pouring concrete. Depending on the hole-making method, bored piles can be divided into several categories, such as sunken pipe bored piles, bored piles and excavated bored piles. Bored piles are a type of pile defined by the pile-making method. They are one of the important ways to change the bearing capacity of the foundation. Due to their low construction noise and vibration, the ability to build piles with a larger diameter than precast piles, wide applicability, obvious effect in changing the bearing capacity of the foundation, and simple and easy-to-understand construction technology, they have become a foundation treatment technology that has been widely used in recent years.

[0003] The installation of the steel cage is a key link in the construction of bored piles and also the difficulty of bored pile construction. At present, the lifting and lowering of the steel cage mainly adopts a manually operated crane to lower the steel cage into the pile hole. When the pile foundation is drilled to a large depth, the steel cage is lowered into the pile hole and the operator cannot see the steel cage. This not only leads to inaccurate elevation of the steel cage, but may also cause problems such as concrete cracking and leakage, thereby affecting the normal use and safety of the project. In addition, the installation position and direction of the steel cage are difficult to control. Quality problems such as the deviation of the steel cage axis are prone to occur during its construction. If effective control is not carried out in time, it will affect the overall quality of the bored pile construction and bring serious safety hazards to the subsequent construction of the building project. Utility Model Content

[0004] The purpose of the utility model is to provide an operating device for lowering a steel cage to solve the problem that when encountering a deep pile hole, the operator cannot see the steel cage after the steel cage enters the pile hole, resulting in inaccurate steel cage elevation and difficulty in controlling the installation position and direction.

[0005] In order to solve the above problems, the technical solutions provided are as follows:

[0006] An operating device for lowering a steel cage comprises an operating frame which can be inserted into the anchoring steel bars of the steel cage. The operating frame is a square frame consisting of four vertically arranged steel pipes and a plurality of steel bars welded between the four steel pipes. Scale lines are provided on the steel pipes.

[0007] The basic principle of the above technical solution is: use a crane to lift the steel cage to be lowered into the pile hole, the crane lifts the steel cage to the pile hole mouth, and then inserts the steel pipe of the operating frame onto the anchor main reinforcement of the steel cage, and then lowers the steel cage together with the operating frame into the pile hole. At this time, the upper part of the operating frame emerges from the pile hole, and the elevation position of the steel cage can be known by the scale line on the steel pipe. The installation position of the steel cage can be judged by the position status of the operating frame. When the installation position of the steel cage is not straight, the operating frame is also not straight. Slowly move the position of the operating frame at the drilling hole mouth, and the steel pipe of the operating frame can drive the steel cage to adjust until it is in the designed position.

[0008] The beneficial effect of the above technical solution is that: compared with the existing situation in which the operator cannot see the steel cage, resulting in inaccurate steel cage elevation and difficult to control the installation position, this technical solution inserts an operating frame on the steel cage before the steel cage is lowered into the pile hole, so that the operating frame and the steel cage are placed into the pile hole together, and the upper part of the operating frame can emerge from the pile hole. The elevation position of the steel cage can be known through the scale lines on the steel pipe of the operating frame. By moving the position of the operating frame, the installation position of the steel cage can be adjusted, making the installation position of the steel cage easy to adjust.

[0009] Furthermore, a lifting ring is welded on the steel bar at the top of the steel pipe, which facilitates the lifting of the operating frame as a whole.

[0010] Furthermore, a support base is provided at the bottom end of the steel pipe. When the steel pipe is inserted into the anchoring main reinforcement of the steel cage, the support base stably supports the steel cage, thereby ensuring that the entire operating frame is stably supported on the steel cage.

[0011] Furthermore, a detachable limiting sleeve is sleeved on the outer periphery of the steel pipe, and a limiting ring is provided on the limiting sleeve. Pulling the limiting ring facilitates adjustment of the overall movement of the operating frame, thereby adjusting the overall position of the operating frame.

[0012] Furthermore, the limit sleeve includes a positioning block, with two movable blocks symmetrically hinged on either side of the positioning block. The ends of the two movable blocks are equipped with locking blocks that can be combined. The locking blocks are provided with corresponding threaded holes, through which bolts are inserted. The bolts pass through the threaded holes and are engaged with nuts. By removing the bolts and nuts from the locking blocks and rotating the movable blocks, the limit sleeve can be completely removed from the steel pipe, making it easy to install the limit sleeve at different heights on the steel pipe.

[0013] Furthermore, a steel shoulder pole is inserted into the limiting ring. When the steel shoulder pole is inserted into the limiting ring and the steel shoulder pole is pushed to rotate, the entire operation frame can be pushed to move more labor-savingly. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the operating frame;

[0015] Figure 2Schematic diagram of the top view of the limit sleeve;

[0016] Figure 3 This is a structural diagram of the operating frame and the steel cage being placed into the pile hole.

[0017] The figure marks in the drawings of the specification include: steel pipe 1, steel bar 2, lifting ring 3, support seat 4, limiting sleeve 5, positioning block 51, movable block 52, locking block 53, bolt 54, nut 55, limiting ring 56, steel shoulder pole 6, steel cage 7, anchor steel bar 8, pile hole 9. DETAILED DESCRIPTION

[0018] The following is further described in detail through specific implementation methods:

[0019] The embodiment is basically as shown in the attached Figure 1-3 As shown:

[0020] An operating device for lowering the steel cage 7, such as Figure 1 As shown, it includes an operating frame on the anchoring steel bar 8 that can be inserted into the steel cage 7. The operating frame is a square frame. The square frame is composed of four vertically arranged steel pipes 1 and a number of steel bars 2 welded between the four steel pipes 1. There are scale lines on the steel pipes 1, which serve as elevation marks. A lifting ring 3 is welded on the steel bar 2 at the top of the steel pipe 1. A support seat 4 that can be inserted into the steel cage 7 and anchoring the steel bar 8 is welded at the bottom of the steel pipe 1. A detachable limit sleeve 5 is sleeved on the outer periphery of the upper part of the steel pipe 1. Figure 2 As shown, the limit sleeve 5 includes a positioning block 51, and two movable blocks 52 are symmetrically hinged on both sides of the positioning block 51. The ends of the two movable blocks 52 are provided with locking blocks 53 that can be combined. Corresponding threaded holes are provided in the locking blocks 53, and bolts 54 are inserted into the threaded holes. The bolts 54 pass through the threaded holes and are matched with nuts 55. The positioning block 51 is attached to the steel pipe 1, and the two movable blocks 52 embrace the steel pipe 1. The locking blocks 53 at the ends of the two movable blocks 52 are combined together, and the threaded holes correspond. The bolts 54 pass through the threaded holes and are matched with nuts 55 to stably cover the limit sleeve 5 on the steel pipe 1. A limiting ring 56 is welded to the outside of the positioning block 51, and a steel shoulder pole 6 is inserted into the limiting ring 56.

[0021] The specific implementation process is as follows:

[0022] Use a crane to lift the steel cage 7 to be lowered into the pile hole 9. The crane lifts the steel cage 7 to the mouth of the pile hole 9, then inserts the steel pipe 1 of the operating frame onto the anchoring main reinforcement of the steel cage 7, and then slowly lowers the steel cage 7 together with the operating frame into the pile hole 9. Figure 3As shown, when the air drilling is deep, the elevation of the steel cage cannot be seen when it is placed in the pile hole, and it is also impossible to accurately judge whether the direction of the steel cage is correct. At this time, the upper part of the operating frame emerges from the pile hole 9, and the elevation of the steel cage 7 can be accurately judged by the scale line on the steel pipe 1, and the installation position and direction of the steel cage 7 can be judged by the position status of the operating frame. During the pouring process, the elevation control mark and direction of the operating frame are observed at any time to ensure that the pouring will not affect the elevation and direction of the steel cage. When the installation position of the steel cage 7 is not straight, the operating frame is also not straight. At this time, use the steel shoulder pole 6 to pass through the limit ring 56 on the steel pipe 1, and push the steel shoulder pole 6 to make circumferential movement, so that the position of the operating frame can be slowly moved on the surface of the pile hole 9. The steel pipe 1 of the operating frame can drive the steel cage 7 to adjust until it is in the designed position, so that the installation position of the steel cage 7 is easy to adjust.

[0023] If the steel cage floats up, heavy objects can be placed on the operating frame to counter-press and control the floating. When the post-insertion steel cage process is adopted, the operating frame can also serve as a device to press down the post-insertion steel cage.

[0024] The above is only an embodiment of the present invention, and the commonly known specific structures and characteristics of the scheme are not described in detail here. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, and these should also be regarded as the scope of protection of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection claimed by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. An operating device for lowering a steel cage, comprising an operating frame that can be inserted into the anchoring steel bars of the steel cage, characterized in that: The operating frame is a square frame, which is composed of four vertically arranged steel pipes and a number of steel bars welded between the four steel pipes, and scale lines are provided on the steel pipes.

2. The operating device for lowering a steel cage according to claim 1, characterized in that: A lifting ring is welded to the steel bar at the top of the steel pipe.

3. The operating device for lowering a steel cage according to claim 2, characterized in that: A support seat is provided at the bottom end of the steel pipe.

4. The operating device for lowering a steel cage according to claim 3, characterized in that: A detachable limiting sleeve is sleeved on the outer periphery of the steel pipe, and a limiting ring is provided on the limiting sleeve.

5. The operating device for lowering a steel cage according to claim 4, characterized in that: The limit sleeve includes a positioning block, two movable blocks are symmetrically hinged on both sides of the positioning block, and locking blocks that can be combined are provided at the ends of the two movable blocks. Corresponding threaded holes are provided in the locking blocks, and bolts are inserted into the threaded holes. The bolts pass through the threaded holes and are matched with nuts.

6. The operating device for lowering a steel cage according to claim 5, characterized in that: A steel shoulder pole is inserted into the limiting ring.

Images