Thickness control device for pier body steel bar protection layer

Abstract

The utility model provides a thickness control device for a pier body steel bar protection layer, and relates to the technical field of building construction. Wherein the draw bar is hung at the joint of a longitudinal bar and a transverse bar of the reinforcement cage; then the other free end of the traction is detachably fixed to the displacement sleeve, the mounting base abuts against the top of the steel formwork at the moment, the displacement sleeve is rotated so that the displacement sleeve can move close to the steel formwork or move away from the steel formwork on the threaded rod, and therefore the distance between the steel formwork and the outer reinforcement of the reinforcement cage can be adjusted; therefore, it is ensured that the thickness of a concrete protection layer is within a preset range, the construction precision is improved, the screw rod and the displacement sleeve are connected in a threaded mode, the self-locking capacity can be achieved, and the situation that the displacement sleeve slides on the screw rod at will, the distance between a steel formwork and a reinforcement cage outer rib is changed, and the thickness of the protection layer is affected is avoided. Construction is convenient, adjustment is convenient, repeated operation is not needed, and construction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a device for controlling the thickness of a pier shaft steel bar protective layer. Background Art

[0002] The distance between the outermost steel bars of concrete castings such as pier bodies and the outer facade of concrete castings is the thickness of the concrete protective layer. The control of the thickness of the protective layer is directly related to the safety of the building structure. The traditional practice is usually to control the thickness of the protective layer by welding short steel bars on the steel bars of concrete castings such as pier bodies according to the design requirements of the thickness of the protective layer. The disadvantages are that the processing is cumbersome, the accuracy of the protective layer is not high, and the thickness of the protective layer cannot be flexibly adjusted; or concrete pads are used for control. This construction method usually involves tying concrete pads to the outside of the steel bars to prevent the steel bar protective layer from being too small, but it is difficult to avoid the steel bar protective layer being too large; the steel bar protective layer in this construction method mainly relies on the steel bar inner support auxiliary steel bar to prevent the protective layer from being too large, and the processing accuracy of the inner support auxiliary bar is too high, and the construction is difficult and cumbersome. Utility Model Content

[0003] The utility model aims to provide a device for controlling the thickness of a pier shaft reinforcement protective layer, which can solve the problems raised by the above-mentioned background technology in view of the deficiencies of the prior art.

[0004] The technical solution of the utility model is achieved in this way:

[0005] The utility model provides a device for controlling the thickness of a pier body steel bar protective layer, comprising a traction rod, a screw rod and a mounting seat, wherein the screw rod is arranged on a side wall of the mounting seat away from a steel formwork, a displacement sleeve threadedly connected to the screw rod is provided on the screw rod, the traction rod and the displacement sleeve are detachably connected, and a bending portion is provided at one end of the traction rod.

[0006] In some technical solutions of the utility model, the bending portion is rotatably arranged at the end of the traction rod.

[0007] In some technical solutions of the utility model, a connecting assembly which is transmission-connected to the traction rod is provided on the displacement sleeve.

[0008] In some technical schemes of the utility model, the connecting component includes a mounting plate, which is rotatably arranged on the top of the mounting seat, and a mounting column is passed through the mounting plate. Guide holes are opened on the extending ends on both sides of the mounting column, and limit rods are slidably arranged in the guide holes. A limit frame is provided between the two limit rods, and the limit frame is detachably connected to the traction rod. A connecting frame connected to the two limit rods is rotatably provided on the displacement sleeve.

[0009] In some technical schemes of the utility model, two limit holes are opened on the outer wall of the mounting column and are respectively connected to the two guide holes. A locking rod is passed through the limit holes, and a locking rod sleeve is provided with a limit spring. A plurality of locking grooves are opened on the outer wall of the limit rod along its axial direction, and a part of the locking rod is embedded in the locking groove.

[0010] In some technical solutions of the utility model, a handle is rotatably provided on the mounting plate, and the two locking rods are hinged to the handle.

[0011] In some technical solutions of the utility model, a U-shaped slot is provided in the middle of the mounting seat, a mounting opening is provided at the bottom of the mounting seat, a push rod threadedly connected to the mounting opening is rotatably provided in the mounting opening, and a part of the push rod is placed in the slot.

[0012] Compared with the prior art, the embodiments of the present invention have at least the following advantages or beneficial effects:

[0013] The traction rod is hung on the connection between the longitudinal reinforcement and the transverse reinforcement of the steel cage; then the other free end of the traction is detachably fixed on the displacement sleeve, and the mounting seat at this time abuts against the top of the steel formwork, and the displacement sleeve is rotated to make the displacement sleeve move closer to the steel formwork or move away from the steel formwork on the screw rod, thereby adjusting the distance between the steel formwork and the outer reinforcement of the steel cage, thereby ensuring that the thickness of the concrete protective layer is within a preset range and improving the construction accuracy. The screw rod and the displacement sleeve are connected by a threaded connection to achieve self-locking ability, thereby preventing the displacement sleeve from sliding on the screw rod at will, causing the distance between the steel formwork and the outer reinforcement of the steel cage to change, affecting the thickness of the protective layer. Through the above structure, construction is convenient, adjustment is convenient, and multiple operations are not required, thereby improving construction efficiency.

[0014] The locking rod locks the limit rod connected to the traction rod, and can cooperate with the threaded connection between the screw and the displacement sleeve to double lock the traction rod to avoid the threaded connection between the screw and the displacement sleeve failing, and the traction rod losing its binding force, causing the distance between the steel formwork and the outer reinforcement of the steel cage to change, causing the thickness of the concrete cover to be outside the preset range, affecting the construction quality of the cover BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2This is a schematic diagram of the actual use structure of the present utility model;

[0018] Figure 3 This is a schematic diagram of the deformation combination of the towing bar of the present utility model;

[0019] Figure 4 This is a schematic diagram of the assembly structure of the locking bar and the limiting bar in the present utility model.

[0020] Icon: 1. Mounting seat; 2. Towing bar; 3. Bending part; 4. Limiting bar; 5. Limiting frame; 6. Handle; 7. Mounting plate; 8. Mounting column; 9. Locking bar; 10. Connecting frame; 11. Screw; 12. Displacement sleeve; 13. Steel formwork; 14. Jacking rod; 15. Limiting spring. Specific embodiments

[0021] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Generally, the components of the embodiments of the present utility model described and illustrated herein can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the present utility model claimed, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] Embodiment 1

[0024] Please refer to Figures 1 - 4 as shown.

[0025] The present utility model provides a pier body steel bar protective layer thickness control device, such as Figure 1 , Figure 2As shown, it comprises a steel round rod-shaped traction rod 2, a screw rod 11 and a mounting seat 1, the screw rod 11 is arranged on the side wall of the mounting seat 1 away from the steel template 13, a displacement sleeve 12 is provided on the screw rod 11 and is threadedly connected thereto, the traction rod 2 and the displacement sleeve 12 are detachably connected, and one end of the traction rod 2 is provided with a bending portion 3; the utility model mainly solves the problem that the accuracy of adjusting the spacing between the steel template 13 and the outer periphery of the steel bar cannot be guaranteed in the prior art, and the operation is cumbersome. In order to solve the above problems, the technical scheme is implemented according to on-site construction or by making the traction rod 2 through a steel round rod or a threaded rod of smaller size, and bending any end thereof through mechanical processing equipment to form a barb shape, so that the traction rod 2 is convenient to be hung on the connection between the longitudinal reinforcement and the transverse reinforcement of the steel cage; then The other free end of the traction is detachably fixed on the displacement sleeve 12. At this time, the mounting seat 1 is abutted against the top of the steel template 13. By rotating the displacement sleeve 12, the displacement sleeve 12 is moved closer to the steel template 13 or away from the steel template 13 on the screw rod 11, thereby adjusting the distance between the steel template 13 and the outer reinforcement of the steel cage, thereby ensuring that the thickness of the concrete protective layer is within a preset range and improving the construction accuracy. The screw rod 11 and the displacement sleeve 12 are connected by a threaded connection to achieve self-locking ability, thereby preventing the displacement sleeve 12 from sliding on the screw rod 11 at will, causing the distance between the steel template 13 and the outer reinforcement of the steel cage to change, affecting the thickness of the protective layer. Through the above structure, construction is convenient and adjustment is convenient, without the need for multiple operations, thereby improving construction efficiency.

[0026] In some technical solutions of the present invention, the bending portion 3 is rotatably arranged at the end of the traction rod 2. The traction rod 2 can be formed by splicing two rod sections, that is, splicing the two ends of the rod together through a pin or other means, so as to improve the flexibility of the traction rod 2 and enable it to be used normally in a narrow space.

[0027] In some technical solutions of the present utility model, a connecting assembly which is transmission-connected to the traction rod 2 is provided on the displacement sleeve 12 .

[0028] In some technical solutions of the present utility model, the connection assembly includes a mounting plate 7. The mounting plate 7 is rotatably arranged on the top of the mounting seat 1 through a clamping seat. The clamping seat is fixed on the top of the mounting seat 1 by screws. An installation column 8 is penetrated through the mounting plate 7. Limiting grooves are provided on both sides of the installation column 8. Snap rings are provided in the limiting grooves to limit the lateral movement of the installation column 8 on the mounting plate 7. Guide holes are provided on the extending ends on both sides of the installation column 8. The opening directions of the guide holes are the same. Limiting rods 4 are slidably arranged in the guide holes. A limiting frame 5 is fixedly arranged between the two limiting rods 4 by welding. The limiting frame 5 is detachably connected to the traction rod 2. A connection frame 10 connected to the two limiting rods 4 is rotatably arranged on the displacement sleeve 12. A sphere is hinged on the connection frame 10. An annular groove body is provided on the end face of the displacement sleeve 12. The sphere is embedded in the annular groove body. In this way, when the displacement sleeve 12 rotates on the screw rod 11, the displacement sleeve 12 will not drive the connection frame 10 to rotate, but only apply a traction force or a thrust to the connection frame 10, so as to adjust the distance between the steel formwork 13 and the outer reinforcement of the steel reinforcement cage, thereby ensuring that the concrete cover thickness is within the preset range.

[0029] Preferably, the connection frame 10 and the traction rod 2 can be connected by means of a hook or by setting a nut on the connection frame 10 and providing an external thread on the free end of the traction rod 2, and the internal thread of the nut is threadedly connected to the external thread.

[0030] In some technical solutions of the present utility model, two limiting holes respectively communicating with the two guide holes are provided on the outer wall of the installation column 8. Locking rods 9 are penetrated through the limiting holes. A limiting spring 15 is sleeved on the locking rod 9. A plurality of locking grooves are provided on the outer wall of the limiting rod 4 along its axial direction. A part of the locking rod 9 is embedded in the locking groove. The above structure is used to lock the limiting rod 4 connecting the traction rod 2, and can cooperate with the threaded connection between the screw rod 11 and the displacement sleeve 12 to double-lock the traction rod 2, so as to avoid the change of the distance between the steel formwork 13 and the outer reinforcement of the steel reinforcement cage after the threaded connection between the screw rod 11 and the displacement sleeve 12 fails and the traction rod 2 loses its binding force, resulting in the concrete cover thickness not being within the preset range and affecting the construction quality of the cover.

[0031] In some technical solutions of the present utility model, a handle 6 is rotatably arranged on the mounting plate 7. Both of the two limiting rods 4 are hinged to the handle 6. The provided handle 6 is rotatably arranged on the mounting plate 7 through a pin shaft, and can pull the limiting rod 4 to unlock the limiting rod 4, which is convenient for the screw rod 11 and the displacement sleeve 12 to cooperate with each other to control the traction length of the traction rod 2, and then control the distance between the steel formwork 13 and the outer reinforcement of the steel reinforcement cage.

[0032] In some technical solutions of the present utility model, a U-shaped card slot is formed in the middle of the mounting base 1. In this way, the mounting base 1 can be buckled on the outer flange at the top of the steel formwork 13, providing a relatively reliable limiting point for the traction rod 2 and ensuring the stability when the steel formwork 13 and the steel reinforcement cage are limited by the traction rod 2; an installation opening is formed at the bottom of the mounting base 1, and a top rod 14 that is rotationally provided in the installation opening and threadedly connected thereto is provided. Moreover, a part of the top rod 14 is placed in the card slot. In this way, the mounting base 1 can be temporarily fixed on the outer flange at the top of the steel formwork 13, preventing the mounting base 1 from moving on the outer flange at the top of the steel formwork 13, causing a change in the distance between the steel formwork 13 and the outer steel bars of the steel reinforcement cage, and ultimately resulting in the thickness of the protective layer not meeting the preset requirements.

[0033] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, various changes and modifications can be made to the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A device for controlling the thickness of a pier reinforcement protective layer, characterized in that: It includes a traction rod, a screw rod and a mounting seat. The screw rod is arranged on the side wall of the mounting seat away from the steel formwork. The screw rod is provided with a displacement sleeve threadedly connected to it. The traction rod and the displacement sleeve are detachably connected. One end of the traction rod is provided with a bending portion.

2. A device for controlling the thickness of a pier reinforcement protective layer according to claim 1, characterized in that: The bending portion is rotatably arranged at the end of the traction rod.

3. A device for controlling the thickness of a pier reinforcement protective layer according to claim 1, characterized in that: The displacement sleeve is provided with a connecting assembly which is transmission-connected with the traction rod.

4. A device for controlling the thickness of the pier reinforcement protective layer according to claim 3, characterized in that: The connecting assembly includes a mounting plate, which is rotatably arranged on the top of the mounting seat, and a mounting column is penetrated by the mounting plate. Guide holes are opened on the extending ends on both sides of the mounting column, and limit rods are slidably arranged in the guide holes. A limit frame is provided between the two limit rods, and the limit frame is detachably connected to the traction rod. A connecting frame connected to the two limit rods is rotatably provided on the displacement sleeve.

5. A device for controlling the thickness of the pier reinforcement protective layer according to claim 4, characterized in that: Two limiting holes are provided on the outer wall of the mounting column and are respectively connected to the two guide holes. A locking rod is passed through the limiting holes. The locking rod sleeve is provided with a limiting spring. A plurality of locking grooves are provided on the outer wall of the limiting rod along its axial direction. Part of the locking rod is embedded in the locking groove.

6. A device for controlling the thickness of the pier reinforcement protective layer according to claim 5, characterized in that: A handle is rotatably provided on the mounting plate, and the two locking rods are hinged to the handle.

7. A device for controlling the thickness of a pier reinforcement protective layer according to any one of claims 1 to 6, characterized in that: A U-shaped slot is provided in the middle of the mounting seat, a mounting opening is provided at the bottom of the mounting seat, a push rod threadedly connected to the mounting opening is rotatably provided in the mounting opening, and a part of the push rod is placed in the slot.

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