Round-foot prefabricated column mounting hole diameter control device

Abstract

The utility model provides a round-foot prefabricated column mounting hole diameter control device which comprises a second limiting piece and a first limiting piece, the second limiting piece and the first limiting piece each comprise a fixing block, the lower end of each fixing block is fixedly connected with a hook rod, a steel coil is arranged between the two hook rods, the lower ends of the hook rods are bent and support the steel coil, and the lower ends of the hook rods are fixedly connected with the fixing blocks. A transverse rod is fixedly connected to the side wall of the fixing block, an inserting groove is formed in the transverse rod, an inserting rod is fixedly connected to the side wall of the fixing block, the inserting rod is arranged in the inserting groove in a matched mode, a threaded hole is formed in one end of the inserting rod, a fixing screw is arranged in the threaded hole in a matched mode, and the fixing screw abuts against the inner wall of the inserting groove. And the relative positions of the cross rod and the insertion rod are fixed. The device can be adjusted to adapt to prefabricated columns with different sizes, and meanwhile, a steel coil mode is adopted, so that the roundness of formed mounting holes can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of construction tools, and in particular to an aperture control device for a round-foot prefabricated column installation hole. Background Art

[0002] In order to improve construction efficiency and environmental friendliness, a large number of prefabricated parts are used in engineering construction. When installing prefabricated structural columns, installation holes need to be reserved. That is, when pouring building structures such as floor slabs, the installation holes of the prefabricated structural columns are usually customized to obtain a sleeve around the lower cylindrical part of the structural column, and then the sleeve is placed in the preset position.

[0003] In the above, according to the method of manufacturing the casing of the prefabricated structural column, the casing can only be used for prefabricated structural columns of this size, and this method is not very universal. Summary of the invention

[0004] In order to solve the above problems, the present invention discloses a device for controlling the aperture of a circular foot prefabricated column installation hole, comprising a second limiter and a first limiter, wherein the second limiter and the first limiter both comprise fixed blocks, the lower ends of the fixed blocks are respectively fixedly connected with hook rods, a steel coil is arranged between the two hook rods, and the lower ends of the hook rods are bent and support the steel coil. The steel coil is gathered between the first limiter and the second limiter, and can automatically expand outward when the steel coil is not blocked, and the spacing between the first limiter and the second limiter is controlled, that is, the degree of expansion of the steel coil is limited, so as to realize the size of the circle formed by the steel coil, which is adjusted according to the diameter of the lower end of the prefabricated column. During construction, holes for assembly are reserved at the prefabricated column. The use of steel coils has the advantages of higher roundness of the reserved holes, and the device has the ability to adjust, and better versatility.

[0005] The side wall of the fixing block on the second position-limiting member is fixedly connected with a cross bar, and a slot is provided on the cross bar. The side wall of the fixing block on the first position-limiting member is fixedly connected with an insertion rod, and the insertion rod is matched in the slot. One end of the insertion rod is provided with a threaded hole, and a fixing screw is matched in the threaded hole. The fixing screw abuts against the inner wall of the slot to keep the relative position of the cross bar and the insertion rod fixed. The cooperation between the cross bar and the insertion rod is more conducive to the distance adjustment between the first position-limiting member and the second position-limiting member. At the same time, after the adjustment is completed, the fixing screw 5 needs to be tightened, and the end of the fixing screw 5 tightly abuts against the inner wall of the slot to keep the position between the first position-limiting member and the second position-limiting member fixed.

[0006] Preferably, one end of the outer side of the steel coil is fixedly connected to one of the hook rods, that is, one end of the steel coil is fixedly connected to the hook rod to ensure that the end will not move.

[0007] Preferably, the upper surface of the crossbar is provided with a scale, through which the distance between the first limiting member and the second limiting member can be more conveniently adjusted.

[0008] Preferably, the side walls of the fixing block are respectively fixedly connected with handles for lifting, which is conducive to pulling the device out of the solidified concrete structure and convenient for pulling left and right, so as to adjust the distance between the first limiting member and the second limiting member.

[0009] Preferably, the side wall at one inner end of the steel coil is fixedly connected with an inner support to support the bottom of the steel coil. When the steel coil is wound, the inner support can be held and rotated to realize the winding of the steel coil. The device is in a gathered state, which is convenient for storage and transportation.

[0010] Preferably, the inner support comprises a sleeve rod, one end of which is fixedly connected to the side wall of the steel coil, and the other end is provided with a support rod, and one end of which is threadedly connected with a fixing nut. An opening is provided at the end of the sleeve rod, and when the fixing nut is rotated and tightened, the end of the sleeve rod is tightened and clamped to fix the support. Since the circle maintained by the steel coil has different diameters, a support rod with a telescopic structure is designed. When supporting, the end of the support rod is against the inner wall of the steel coil, reducing the deformation of the steel coil during casting.

[0011] Preferably, a spring is arranged inside the sleeve rod, one end of the spring abuts against the inner wall of the sleeve rod, and the other end abuts against the end of the support rod. After the fixing nut is loosened, the support rod extends outward under the action of the spring.

[0012] The beneficial effects of the present invention are as follows:

[0013] 1. A first limiter, a second limiter and a steel coil are provided, which can be adjusted according to the size of the prefabricated structural column. The device has the advantages of being easy to use and having better versatility.

[0014] 2. An internal support is provided, which can not only support the lower part of the steel coil and reduce the deformation, but also facilitate the winding of the steel coil. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0016] Figure 2 is a three-dimensional schematic diagram of a first limiting member of the present invention;

[0017] Figure 3 is a three-dimensional schematic diagram of a second limiting member of the present invention;

[0018] Figure 4 It is a three-dimensional schematic diagram of the inner support of the present invention.

[0019] List of reference numerals:

[0020] 1. Steel coil; 2. Second stopper; 3. First stopper; 4. Internal support; 5. Fixing screw;

[0021] 21, 31, hook rod; 22, 32, fixing block; 23, 33, handle; 24, insert rod; 25, threaded hole; 34, scale; 35, slot; 36, cross bar; 41, sleeve rod; 42, support rod; 43, spring; 44, fixing nut. DETAILED DESCRIPTION

[0022] The present invention is further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0023] Combination Figure 1 , Figure 2 and Figure 3 As shown, a device for controlling the aperture of a round-foot prefabricated column mounting hole comprises a second limit member 2 and a first limit member 3, which are arranged in opposition. The second limit member 2 and the first limit member 3 both comprise fixing blocks 22, 32, one side of the fixing blocks 22, 32 is an arc surface, the lower ends of the fixing blocks 22, 32 are respectively fixedly connected with hook rods 21, 31, the hook rods 21, 31 are fixedly connected to one side close to the arc surface, a steel coil 1 is arranged between the two hook rods 21, 31, the lower ends of the hook rods 21, 31 are bent and support the steel coil 1, the steel coil 1 is elastically contracted between the two hook rods 21, 31, and the steel coil 1 can automatically expand when there is no external force.

[0024] When the device is in use, the distance between the first limit member 3 and the second limit member 2 can be controlled in advance, and the steel coil 1 is automatically expanded. Then the device is placed in a preset position. After the concrete pouring is completed and solidified, the device is taken out, and holes for installing prefabricated columns are reserved on the concrete structure.

[0025] The reserved holes of the device are adjustable and can be adapted to prefabricated columns of various sizes, and have the advantage of high versatility. At the same time, on this basis, the reserved holes are made by using the steel coil 1, and the roundness thereof is better.

[0026] The side wall of the fixed block 32 is fixedly connected with a cross bar 36, and the end of the cross bar 36 is fixedly connected to the arc surface. A slot 35 is provided on the cross bar 36. The cross section of the slot 35 is T-shaped, and is small at the top and large at the bottom. The side wall of the fixed block 22 is fixedly connected with an insertion rod 24, and one end of the insertion rod 24 is also fixedly connected to the arc surface. The insertion rod 24 fits in the slot 35, that is, the cross-sectional profiles of the two are the same, and the T-shaped structure is set to prevent the insertion rod 24 from being misaligned in the vertical direction of the slot 35. A threaded hole 25 is provided at one end of the insertion rod 24, and a fixing screw 5 is provided in the threaded hole 25. A regular polygonal knob is fixedly connected to one end of the fixing screw 5. The fixing screw 5 is against the inner wall of the slot 35 to keep the relative positions of the cross bar 36 and the insertion rod 24 fixed. Before or after the first limit member 3 and the second limit member 2 are adjusted, the fixing screw 5 needs to be loosened or tightened.

[0027] One end of the outer side of the steel coil 1 is fixedly connected to one of the hook rods 21, 31, that is, one end of the steel coil 1 can be fixed to the first limiter 3 or the second limiter 2, the purpose of which is to ensure that one end of the steel coil 1 does not move.

[0028] A scale 34 is provided on the upper surface of the cross bar 36. When the distance between the first limit member 3 and the second limit member 2 is adjusted, the position between the insertion rod 24 and the slot 35 also changes, and the scale 34 is provided to better determine the distance between the first limit member 3 and the second limit member 2.

[0029] The side walls of the fixed blocks 22 and 32 are respectively fixedly connected with handles 23 and 33. Specifically, the side wall of the fixed block 22 is fixedly connected with the handle 23, and the side wall of the fixed block 32 is fixedly connected with the handle 33. The handles 23 and 33 make it easier to lift the device, remove the device from the solidified concrete structure, or pull apart the first limit member 3 and the second limit member 2 to control the spacing.

[0030] Combination Figure 1 and Figure 4 As shown, the side wall at one inner end of the steel coil 1 is fixedly connected with an inner support 4. During pouring, the concrete will exert a relatively large pressure on the lower part of the steel coil 1, which may easily cause the lower part of the steel coil 1 to deform. An inner support 4 is added here so that the two ends of the inner support 4 are against the inner wall of the steel coil 1, thereby reducing the deformation of the steel coil 1 during use. After the use of the device is completed, the inner support 4 can be grasped and rotated to reel the steel coil 1.

[0031] The inner support 4 includes a sleeve rod 41, one end of which is fixedly connected to the side wall of the steel coil 1, and a support rod 42 is extended from the other end, and a plurality of openings are provided at the end. A fixing nut 44 is threadedly connected to one end of the sleeve rod 41. After the fixing nut 44 is tightened, the part at the opening is radially squeezed inward and presses against the support rod 42, thereby fixing the relative positions of the sleeve rod 41 and the support rod 42, and the other end of the support rod 42 is spherical.

[0032] A spring 43 is provided inside the sleeve rod 41, one end of the spring 43 abuts against the inner wall of the sleeve rod 41, and the other end abuts against the end of the support rod 42. That is, after loosening the fixing nut 44, the support rod 42 only extends outward from the inside of the sleeve rod 41 under the action of the spring 43, thereby improving the expansion effect of the steel coil 1.

[0033] The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical schemes composed of any combination of the above technical features.

Claims

1. A device for controlling the diameter of a circular foot prefabricated column installation hole, characterized in that: The invention comprises a second limiting member (2) and a first limiting member (3), wherein the second limiting member (2) and the first limiting member (3) both comprise fixing blocks (22, 32), the lower ends of the fixing blocks (22, 32) are respectively fixedly connected to hook rods (21, 31), a steel coil (1) is arranged between the two hook rods (21, 31), and the lower ends of the hook rods (21, 31) are bent to support the steel coil (1); A cross bar (36) is fixedly connected to the side wall of the fixed block (32), and a slot (35) is provided on the cross bar (36). An insertion rod (24) is fixedly connected to the side wall of the fixed block (22), and the insertion rod (24) fits in the slot (35). A threaded hole (25) is provided at one end of the insertion rod (24), and a fixing screw (5) is provided in the threaded hole (25). The fixing screw (5) abuts against the inner wall of the slot (35) to keep the cross bar (36) and the insertion rod (24) fixed in relative position.

2. The device for controlling the diameter of a circular foot prefabricated column installation hole according to claim 1, characterized in that: One outer end of the steel coil (1) is fixedly connected to one of the hook rods (21, 31).

3. The device for controlling the diameter of a circular foot prefabricated column installation hole according to claim 1, characterized in that: The upper surface of the crossbar (36) is provided with a scale (34).

4. The device for controlling the diameter of a circular foot prefabricated column installation hole according to claim 1, characterized in that: The side walls of the fixed blocks (22, 32) are respectively fixedly connected with handles (23, 33).

5. The device for controlling the diameter of a circular foot prefabricated column installation hole according to claim 1, characterized in that: An inner support (4) is fixedly connected to a side wall at one inner end of the steel coil (1).

6. The device for controlling the diameter of a circular foot prefabricated column installation hole according to claim 5, characterized in that: The inner support (4) comprises a sleeve rod (41), one end of the sleeve rod (41) is fixedly connected to the side wall of the steel coil (1), and the other end is provided with a support rod (42) extending therefrom, and one end of the sleeve rod (41) is threadedly connected to a fixing nut (44).

7. The device for controlling the diameter of a circular foot prefabricated column installation hole according to claim 6, characterized in that: A spring (43) is arranged inside the sleeve rod (41), one end of the spring (43) abuts against the inner wall of the sleeve rod (41), and the other end abuts against the end of the support rod (42).

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