Reinforcement cage positioning device for cast-in-situ bored pile

Abstract

The utility model belongs to the technical field of foundation engineering construction, and particularly relates to a reinforcement cage positioning device for a cast-in-situ bored pile, which comprises an assembly support and a cross arm. The assembling support comprises a supporting frame and a movable frame. The supporting frame is supported on the periphery and the top of a sheath used for containing a reinforcement cage. The movable frame is arranged on the inner side of the supporting frame; the movable frame can horizontally move between the supporting frame and the reinforcement cage; a plurality of ejector rods are further assembled on the supporting frame and evenly distributed on the outer side of the movable frame in the radial direction. The ejector rod is in threaded connection with the supporting frame, and meanwhile the outer side end of the ejector rod is provided with a hand wheel connected with the ejector rod. The inner side end of the ejector rod abuts against the movable frame. The multiple cross arms penetrate through the reinforcement cage, the two ends of each cross arm are erected on the movable frame, and finally the position of the reinforcement cage in the sheath is adjusted through movement of the movable frame. According to the utility model, the horizontal position of the reinforcement cage can be flexibly adjusted manually on the premise of not using a large machine.

Description

Technical Field

[0001] The utility model belongs to the technical field of foundation engineering construction, and particularly relates to a reinforcement cage positioning device for bored cast-in-place piles. Background Art

[0002] Bored piles refer to piles that are made by mechanically drilling a pile hole in the foundation soil at the construction site, placing a steel cage inside it, and pouring concrete. During the construction process, after the casing is inserted into the drilled hole, the steel cage needs to be placed in the middle of the casing. However, the steel cage is generally hoisted into the casing and then fixed to the casing through crossbeam support. During this process, it is difficult to manually adjust the position of the steel cage due to its heavy weight. The welding operation between two adjacent sections of the steel cage and the adjustment of the assembly position of the steel cage have become construction difficulties. Utility Model Content

[0003] In view of the problems existing in the prior art, the utility model provides a reinforcement cage positioning device for bored cast-in-place piles, which can manually adjust the horizontal position of the reinforcement cage without the aid of large-scale machinery.

[0004] The utility model is achieved in this way:

[0005] A reinforcement cage positioning device for bored piles, comprising an assembly bracket and a cross arm;

[0006] The assembly bracket includes a support frame and a movable frame; the support frame is supported around and on the top of a sheath for accommodating a steel cage; the movable frame is arranged on the inner side of the support frame; the movable frame can move horizontally between the support frame and the steel cage; specifically, a plurality of push rods are also arranged on the support frame, and the push rods are evenly distributed on the outer side of the movable frame along the radial direction; the push rods are threadedly connected to the support frame, and a hand wheel connected to the outer end of the push rod is provided; the inner end of the push rod abuts against the movable frame;

[0007] A plurality of cross arms pass through the steel cage and both ends of the cross arms are placed on a movable frame, and finally the position of the steel cage in the sheath is adjusted by moving the movable frame.

[0008] Furthermore, the support frame includes support legs supported around the sheath, and the bottoms of the support legs are pressed on the ground through horizontal support panels.

[0009] Furthermore, the support frame also includes an annular horizontal hanger arranged on the top of all supporting legs, and a circular clearance hole corresponding to the assembly position of the steel cage is provided at the center of the horizontal hanger, and the diameter of the clearance hole is larger than the diameter of the steel cage.

[0010] Furthermore, the movable frame is circular and horizontally arranged inside the supporting frame; the left and right sides of the top of the movable frame are movably connected to the supporting frame through a hoisting assembly.

[0011] Furthermore, the lifting assembly adopts a steel wire rope, and lifting rings connected to the steel wire rope are respectively provided on the supporting frame and the movable frame.

[0012] Furthermore, a snap-in socket for snapping with the movable frame is provided at the bottom of the cross arm.

[0013] Furthermore, the push rods correspond to the support legs one by one and are threadedly connected.

[0014] Furthermore, positioning holes corresponding to the push rods are provided on the movable frame, and the positioning holes are used to accommodate the inner ends of the push rods.

[0015] Furthermore, a top plate is welded and fixed on the movable frame, and the positioning hole is provided on the top plate.

[0016] The utility model has the following advantages and technical effects:

[0017] The steel cage positioning device of the utility model has a reasonable structural design. Through an assembly frame composed of a support frame and a movable frame, when in use, the support frame serves as an external main body, thereby realizing the free assembly of the movable frame, and then the steel cage and the movable frame are formed into a whole through cross arms, which is convenient for the lifting of the steel cage, and the position of the steel cage inside the sheath is adjusted by moving the movable frame. This movement effect can be easily completed manually without the aid of additional large-scale mechanical equipment, which provides convenience for the installation and adjustment of the steel cage, is easy to construct, and improves the efficiency of engineering construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] Figure 2 It is a structural schematic diagram of the utility model (without supporting frame).

[0020] Figure 3 It is a structural schematic diagram of the top surface of the movable frame.

[0021] Figure 4 It is a structural schematic diagram of the bottom surface of the movable frame.

[0022] Figure 5 This is a schematic diagram of the structure of a local part of the top plate.

[0023] Figure 6 This is a schematic diagram of the structure of the cross arm.

[0024] In the figure: 100 support frame, 101 hoisting assembly, 102 support panel, 200 ejector rod, 201 handwheel, 301 cross arm, 302 movable frame, 303 lifting ring, 304 top plate, 305 positioning hole, 306 bayonet, 400 steel reinforcement cage, 500 sheath. Detailed implementation manners

[0025] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0026] As Figure 1-6 shown, the present utility model discloses a steel reinforcement cage positioning device for bored cast-in-place piles, including an assembly bracket and a cross arm; the assembly bracket includes a support frame 100 and a movable frame 302; the support frame 100 supports around and on the top of the sheath and serves as a support component for the entire positioning device; the movable frame 302 is arranged inside the support frame 100, and the movable frame 302 can move horizontally between the support frame 100 and the steel reinforcement cage; multiple cross arms 301 pass through the steel reinforcement cage 400 and both ends of the cross arms are placed on the movable frame 302, and finally the movable frame 302 supports the steel reinforcement cage 400, so as to adjust the position of the steel reinforcement cage 400 in the sheath by using the convenient movement effect of the movable frame 302, realizing the movement adjustment of the steel reinforcement cage 400; in addition, the entire steel reinforcement cage 400 is hoisted through the movable frame, which is easy to construct and improves the engineering construction efficiency.

[0027] The following describes the specific implementation structures of the above-mentioned support frame 100 and movable frame 302.

[0028] The support frame 100 is made by welding metal profiles, and its side and top surfaces are both hollow structures without obstruction on the surface, so that it is easy to realize the entry and exit of staff, as well as the entry and exit of supporting components and tools;

[0029] Preferably, the support frame 100 includes support legs provided around the sheath, and the bottom of the support legs is pressed on the ground by a horizontal support panel 102 to ensure that the support frame 100 has a good support foundation and prevent it from shifting or tilting during operation.

[0030] Preferably, the support frame 100 further includes an annular horizontal hanger provided at the top of all support legs, and a circular relief hole corresponding to the assembly position of the steel reinforcement cage 400 is provided at the center of the horizontal hanger. The diameter of the relief hole is larger than the diameter of the steel reinforcement cage for the vertical assembly of the steel reinforcement cage 400 to enter and exit.

[0031] Preferably, the movable frame 302 is made of metal profiles and processed into a circle. The movable frame 302 is located inside the supporting frame 100 and is distributed horizontally as a whole. The left and right sides of the top are movably connected to the supporting frame 100 through the lifting assembly 101; more preferably, the lifting assembly 101 uses a steel wire rope, and lifting rings 303 connected to the steel wire rope are respectively provided on the supporting frame 100 and the movable frame 302, so that the movable frame 302 can be adjusted in the horizontal direction through the lifting assembly 101.

[0032] Preferably, in order to achieve a more stable assembly effect between the cross arm 301 and the support frame 100, a bayonet 306 is provided at the bottom of the cross arm 301, and the movable frame 302 is located in the bayonet 306. At this time, the cross arm 301 and the movable frame 302 cooperate stably and will not cause safety accidents such as detachment and sliding.

[0033] On the basis of the above-mentioned assembly structure, in order to achieve the stability and operability of the moving effect of the steel cage 400, a mandrel 200 corresponding to the support legs is also installed on the support frame 100, and the mandrel 200 is evenly distributed on the outside of the movable frame 302 along the radial direction. The mandrel 200 is threadedly connected to the support legs. At the same time, the outer end of the mandrel 200 is provided with a hand wheel 201 connected thereto, and the mandrel 200 can be easily rotated by the hand wheel 201 to move the mandrel 200 forward and backward along the axial direction; the inner end of the mandrel 200 abuts against the movable frame 302 and moves the movable frame 302. movable frame 302; in order to achieve this purpose, positioning holes 305 corresponding to the push rods 200 are provided on the movable frame 302, and the positioning holes 305 are used to accommodate the inner end of the push rod 200 to ensure stable contact between the two, so that the movable frame 302 can be pressed against and moved; in order to ensure the structural stability of the movable frame 302, a top plate 304 is welded and fixed on the bottom surface of the movable frame 302, and the positioning holes 305 are provided on the top plate 304, so that the top plate 304 is in contact with the push rod 200, and the main structure of the movable frame 302 is kept intact.

[0034] Working principle:

[0035] Before adjusting the position, the steel cage is hoisted into the sheath through the support frame by means of a lifting device. After it is in place, the positioning device of the present technical solution is installed, and at least two cross arms are passed through the interior of the steel cage, and both ends of the cross arms are clamped on the movable frame; the position of the steel cage in the sheath is adjusted by rotating the corresponding top rod, and the lifting device is removed at the same time; after the steel cage is welded, the positioning device is removed for subsequent construction.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A reinforcement cage positioning device for bored piles, characterized in that: Includes mounting brackets and cross arms; The assembly bracket includes a support frame and a movable frame; the support frame is supported around and on the top of a sheath for accommodating a steel cage; the movable frame is arranged inside the support frame; The movable frame can move horizontally between the support frame and the steel cage; specifically, a plurality of push rods are mounted on the support frame, and the push rods are evenly distributed radially on the outside of the movable frame; the push rods are threadedly connected to the support frame, and a hand wheel connected to the push rods is provided at the outer ends of the push rods; the inner ends of the push rods are in contact with the movable frame; A plurality of cross arms pass through the steel cage and both ends of the cross arms are placed on a movable frame, and finally the position of the steel cage in the sheath is adjusted by moving the movable frame.

2. The reinforcement cage positioning device for bored piles according to claim 1, characterized in that: The support frame comprises support legs which are supported around the protective sleeve, and the bottoms of the support legs are pressed on the ground through horizontal support panels.

3. The reinforcement cage positioning device for bored piles according to claim 2, characterized in that: The support frame also includes an annular horizontal hanger arranged on the top of all support legs. A circular clearance hole corresponding to the assembly position of the steel cage is provided at the center of the horizontal hanger, and the diameter of the clearance hole is larger than the diameter of the steel cage.

4. The reinforcement cage positioning device for bored piles according to claim 1, characterized in that: The movable frame is circular and horizontally arranged inside the supporting frame; the left and right sides of the top of the movable frame are movably connected to the supporting frame through a hoisting assembly.

5. The reinforcement cage positioning device for bored piles according to claim 4, characterized in that: The hoisting assembly adopts a steel wire rope, and hoisting rings connected with the steel wire rope are respectively provided on the supporting frame and the movable frame.

6. The reinforcement cage positioning device for bored piles according to claim 1, characterized in that: A snap-in socket for snapping with the movable frame is provided at the bottom of the cross arm.

7. The reinforcement cage positioning device for bored piles according to claim 1, characterized in that: The top rods correspond to the supporting legs one by one and are threadedly connected.

8. The reinforcement cage positioning device for bored piles according to claim 7, characterized in that: The movable frame is provided with positioning holes corresponding to the push rods one by one, and the positioning holes are used to accommodate the inner ends of the push rods.

9. The reinforcement cage positioning device for bored piles according to claim 8, characterized in that: A top plate is welded and fixed on the movable frame, and the top plate is provided with the positioning holes.

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