Rebar protection layer adjusting tool

Abstract

The utility model provides a reinforcing steel bar protective layer adjusting tool which comprises a rotating shaft with threads and a sleeve connected to the rotating shaft in a screwed mode, a rotating handle is arranged on the rotating shaft, the length of the rotating shaft is equal to the distance between two opposite formworks of an outer formwork to be poured, two fixing rods are arranged on the outer wall of the sleeve, and the fixing rods are connected with the rotating shaft in a screwed mode. The two fixing rods are located on the same straight line, and the straight line coincides with one diameter of the sleeve. The two ends of the rotating shaft abut against the inner walls of the two opposite formworks respectively, the fixing rod is fixed to a steel bar on the outermost side of the steel reinforcement cage to be adjusted, and the position of the steel bar is adjusted by rotating the rotating handle. The steel bar protective layer can be accurately and easily adjusted, it is guaranteed that the steel bar protective layer meets the requirements of design and specifications, and the construction quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of reinforced concrete structure construction tools, and more specifically, to a steel bar protective layer adjustment tool. Background Art

[0002] The steel bar protective layer refers to the distance from the outer edge of the outermost steel bar to the concrete surface. The steel bar protective layer protects the steel cage from rust and provides bonding and anchoring, ensuring the durability and safety of concrete components. The thickness of the steel bar protective layer is very important to the durability and safety of concrete structures. When pouring reinforced concrete structures, quality accidents often occur due to insufficient thickness of the steel bar protective layer, especially for large-scale cast-in-place reinforced concrete structures with large steel bar spans, and problems with the protective layer are easy to occur.

[0003] Moreover, when placing concrete pads between the formwork and the steel bars to expand the pressure-bearing protective layer, the concrete pads are subjected to greater force and are easily broken at locations where the protective layer is too thin, and the pads fall without force at locations where the protective layer is too large, so the pads cannot be effectively installed. Adjusting the thickness of the protective layer has always been the focus and difficulty of the construction process. Utility Model Content

[0004] In view of the above problems, the purpose of the utility model is to provide a steel bar protective layer adjustment tool, which can accurately and easily adjust the steel bar protective layer, ensure that the steel bar protective layer meets the requirements of the design and specifications, and improve the construction quality.

[0005] The utility model provides a steel bar protective layer adjustment tool, comprising a rotating shaft with a thread and a sleeve screwed on the rotating shaft, a rotating handle is arranged on the rotating shaft, the length of the rotating shaft is equal to the spacing between two opposite templates of the outer mold to be cast, and two fixing rods are arranged on the outer wall of the sleeve, the two fixing rods are on the same straight line, and the straight line coincides with a diameter of the sleeve;

[0006] The two ends of the rotating shaft are respectively pressed against the inner walls of the two opposite templates, the fixing rod is fixed to the outermost steel bars of the steel cage to be adjusted, and the rotating handle is rotated to adjust the position of the steel bars.

[0007] A circular top plate is arranged at the end of the rotating shaft.

[0008] The rotating handle and the sleeve are respectively located on two sides of the steel cage.

[0009] The rotating handle is arranged at the middle part of the rotating shaft.

[0010] The rotating shaft is a fully threaded rod.

[0011] The length of the sleeve is not less than 30 mm, and the diameter of the sleeve is smaller than the spacing between adjacent steel bars.

[0012] The diameter of the rotating shaft is not less than 15 mm.

[0013] The length of the fixing rod is not less than 20 cm.

[0014] The fixing rod and the reinforcement are bound together by steel wires.

[0015] Both ends of the rotating shaft are arranged in bearings, and the bearings are tightly pressed against the inner wall of the template.

[0016] From the above description, it can be known that the steel bar protective layer adjustment tool provided by the utility model includes a sleeve and a rotating shaft that are screwed together, the two ends of the rotating shaft are respectively pressed against the inner walls of two opposite templates, the two fixing rods of the sleeve are fixed to the outermost steel bars of the steel cage to be adjusted, the rotating shaft is rotated, the position of the rotating shaft remains unchanged, and the driving sleeve moves on the rotating shaft, thereby adjusting the position of the outermost steel bar and the distance between the outermost steel bar and the template. The utility model drives the sleeve to move based on the simple threaded screw connection principle, changes the position of the steel bar, adjusts the thickness of the steel bar protective layer, and is convenient and labor-saving to adjust in a smaller steel cage space, thereby improving construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] By referring to the following description in conjunction with the accompanying drawings, and with a more comprehensive understanding of the present invention, other purposes and results of the present invention will become more clear and easy to understand. In the accompanying drawings:

[0018] Figure 1 It is a structural schematic diagram of a steel bar protective layer adjustment tool according to Embodiment 1 of the utility model;

[0019] Figure 2 This is a schematic diagram of the use of a steel bar protective layer adjustment tool according to Embodiment 1 of the utility model;

[0020] Figure 3 It is a structural schematic diagram of a steel bar protective layer adjustment tool according to Embodiment 2 of the utility model;

[0021] Among them, 1-rotating shaft, 2-sleeve, 3-rotating handle, 4-fixing rod, 5-top plate, 6-bearing, 7-template, 8-rebar.

[0022] The same reference numerals throughout the drawings indicate similar or corresponding features or functions. DETAILED DESCRIPTION

[0023] The present invention can be subjected to various changes and can have various embodiments, and specific embodiments are illustrated and described in the accompanying drawings. However, the present invention is not limited to the specific implementation, and all changes, equivalents and substitutes falling within the concept and technical scope of the present invention are included, and should be understood to be included.

[0024] Ordinal terms such as first, second, etc. may be used to describe various components, but the components are not limited to the terms. The terms are only used to distinguish one component from another component. For example, without departing from the scope of the claims of the present invention, the second component may be named as the first component, and similarly, the first component may be named as the second component. The terms and / or include a combination of multiple items recorded in association or a certain item among multiple items recorded in association.

[0025] It should be understood that when a certain component is mentioned to be "connected" or "contacted" with other components, this includes not only the case where it is directly connected or contacted with other components, but also the case where other components exist in between. Conversely, when a certain component is mentioned to be "directly connected" or "directly contacted" with other components, it should be understood that there are no other components in between.

[0026] In the description of the embodiments, when it is described that a certain component is formed "on or under" another component, on or under includes two components directly contacting each other or at least one other component is arranged and formed between the two components. Moreover, when it is expressed as on or under, it refers to not only the upper direction but also the lower direction based on a certain component.

[0027] The terms used in this application are only used to illustrate specific embodiments and are not intended to limit the present invention. Unless the context clearly stipulates otherwise, singular expressions include plural expressions. In this application, it should be understood that terms such as "including" or "having" are used to specify the presence of features, numbers, steps, operations, constituent elements, parts or combinations thereof recorded in the specification, and do not preclude the presence or additional possibility of one or more other features, numbers, steps, operations, constituent elements, parts or combinations thereof.

[0028] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as those generally understood by those skilled in the art. Terms defined in commonly used dictionaries should be interpreted as having the same meaning as in the context of the relevant technology, and if not clearly defined in this application, they should not be interpreted as ideal or overly formal meanings.

[0029] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0030] Example 1

[0031] Figure 1 It is a structural schematic diagram of a steel bar protective layer adjustment tool according to Embodiment 1 of the utility model; Figure 2 This is a schematic diagram of the use of a steel bar protective layer adjustment tool according to Embodiment 1 of the utility model;

[0032] like Figure 1 , Figure 2 As shown, the steel bar protective layer adjustment tool proposed in this embodiment can be used to adjust the thickness of the steel bar protective layer of reinforced concrete buildings, and can also be used to adjust the distance between other steel bars and formwork.

[0033] The steel bar protective layer adjustment tool comprises a rotating shaft 1 with a thread and a sleeve 2 screwed on the rotating shaft 1. The rotating shaft 1 has an external thread, and the sleeve 2 has an internal thread matched with the external thread of the rotating shaft 1. The rotating shaft 1 is used for rotation, and the position of the rotating shaft 1 does not change but only rotates. As the rotating shaft 1 rotates, the position of the sleeve 2 on the rotating shaft 1 changes. The sleeve 2 is used to connect with the outermost steel bar 8 of the steel cage to be adjusted. As the position of the sleeve 2 on the rotating shaft 1 changes, the position of the outermost steel bar 8 changes, thereby achieving the purpose of adjusting the thickness of the steel bar protective layer. The steel bar protective layer adjustment tool can be used in adjusting the steel bar protective layer of columns and walls.

[0034] In order to facilitate the positioning of the rotating shaft 1, the length of the rotating shaft 1 is equal to the spacing between the two opposite templates 7 of the outer mold to be cast, and the two ends of the rotating shaft 1 are respectively pressed against the inner walls of the two opposite templates 7, and the rotating shaft 1 is horizontally positioned inside the template 7. When rotating, both ends of the rotating shaft 1 rotate on the template 7.

[0035] In order to facilitate the rotation of the rotating shaft 1, a rotating handle 3 is provided on the rotating shaft 1, and the rotating handle 3 is rotated to adjust the position of the outermost steel bar 8. It is easier and more convenient to rotate the rotating shaft 1 by holding the rotating handle 3. The rotating handle 3 can be a straight rod.

[0036] In order to facilitate the fixing of the sleeve 2 and the outermost steel bars 8, two fixing rods 4 are arranged on the outer wall of the sleeve 2. The two fixing rods 4 are on the same straight line, and the straight line coincides with a diameter of the sleeve 2. The fixing rods 4 are fixed to the outermost steel bars 8 of the steel cage to be adjusted. In order to facilitate the connection, the two fixing rods 4 are respectively perpendicular to the steel bars 8 to be adjusted, and the sleeve 2 can be between the two middle steel bars 8. The fixing rod 4 is fixedly connected to the steel bars 8, and the sleeve 2, the fixing rod 4, and the steel bars 8 become one. The movement of the sleeve 2 can drive the steel bars 8 to move.

[0037] The direction of rotation of the rotating handle 3 is selected according to the moving direction of the steel bar 8 to be adjusted.

[0038] In a specific embodiment of the utility model, in order to stably rotate the rotating shaft 1, a rotating handle 3 can be set at one end of the rotating shaft 1, and the rotating handle 3 and the sleeve 2 are respectively located on both sides of the steel cage, and rotating the rotating handle 3 can effectively and stably move the sleeve 2. The length of the rotating handle 3 should not conflict with the template 7, and it should rotate flexibly.

[0039] In a specific embodiment of the present utility model, the rotating handle 3 can also be set in the middle of the rotating shaft 1. At this time, the rotating handle 3 is located in the middle of the steel cage, and the rotation space is larger, which is suitable for adjusting the steel protection layer of the column steel cage without steel bars 8 inside. Workers can stand inside the steel cage to use this tool.

[0040] In a specific embodiment of the utility model, the rotating shaft 1 can be a fully threaded rod, which is suitable for adjusting various distances between the template and the steel bar, and the sleeve 2 can be rotated on the rotating shaft 1 all the time without falling off.

[0041] In a specific embodiment of the present utility model, in order for the sleeve 2 to be located between two steel bars 8, the diameter of the sleeve 2 is smaller than the spacing between the outermost steel bars 8, and the length of the sleeve 2 is not less than 30 mm, which can ensure the effective rotational length of the sleeve 2 and the rotating shaft 1, and the sleeve 2 can effectively drive the steel bars 8 to move.

[0042] In a specific embodiment of the present invention, in order to stably abut the rotating shaft 1 between the two templates 7, the diameter of the rotating shaft 1 is not less than 15 mm, and the thicker thread diameter can ensure stable screwing and rotation.

[0043] In a specific embodiment of the present invention, the length of the fixing rod 4 is not less than 20 cm. A relatively long fixing rod 4 can be fixedly connected to a plurality of steel bars 8 at the same time, and a plurality of steel bars can be adjusted at the same time. The connection between the plurality of steel bars 8 and the fixing rod 4 can be more firmly and stably, and the sleeve 2 can move stably. The fixing rod 4 can be a round rod or a square rod.

[0044] In a specific embodiment of the present invention, the fixing rod 4 and the outermost reinforcement 8 can be fixedly connected by steel wire binding.

[0045] In a specific embodiment of the utility model, in order to allow the end of the rotating shaft 1 to rotate flexibly on the template 7, a circular top plate 5 is provided at the end of the rotating shaft 1. The area of ​​the top plate 5 can be slightly larger than the cross-sectional area of ​​the rotating shaft 1, and the surface of the top plate 5 in contact with the template 7 is smooth, which is convenient for the rotating shaft 1 to rotate and the sleeve 2 to move quickly.

[0046] In the same project, this steel bar cover adjustment tool can be used in many reinforced concrete structures. It is suitable for adjusting steel bar cover of various thicknesses, especially for situations where the volume is large, the force between the steel bar and the formwork is large, and the steel bar cover cannot be controlled by pads.

[0047] Example 2

[0048] Figure 3 It is a structural schematic diagram of a steel bar protective layer adjustment tool according to Embodiment 2 of the utility model;

[0049] like Figure 3 As shown, the steel bar protective layer adjustment tool provided in this embodiment is based on Embodiment 1. In order to make the rotating shaft 1 rotate more smoothly, bearings 6 are arranged at both ends of the rotating shaft 1, and the bearings 6 are pressed tightly against the inner wall of the template 7.

[0050] The end of the rotating shaft 1 is fixed in the bearing 6, and the side of the bearing 6 is pressed against the inner wall of the template 7. The rotating shaft 1 can be slightly shorter than the distance between the two opposite templates 7, and the end of the rotating shaft 1 does not contact the inner wall of the template 7. When the rotating shaft 1 rotates, the rotating shaft 1 rotates smoothly in the bearing 6 without friction with the template 7, and the rotation is more stable and the pressing is more secure. The bearing 6 can be a rolling bearing.

[0051] The steel bar cover adjustment tool according to the utility model is described above by way of example with reference to the accompanying drawings. However, those skilled in the art should understand that various improvements can be made to the steel bar cover adjustment tool proposed by the utility model without departing from the content of the utility model. Therefore, the protection scope of the utility model should be determined by the content of the attached claims.

Claims

1. A steel bar protective layer adjustment tool, characterized in that: It comprises a rotating shaft with a thread and a sleeve screwed on the rotating shaft, a rotating handle is arranged on the rotating shaft, the length of the rotating shaft is equal to the distance between two opposite templates of the outer mold to be cast, and two fixing rods are arranged on the outer wall of the sleeve, the two fixing rods are on the same straight line, and the straight line coincides with a diameter of the sleeve; The two ends of the rotating shaft are respectively pressed against the inner walls of the two opposite templates, the fixing rod is fixed to the outermost steel bars of the steel cage to be adjusted, and the rotating handle is rotated to adjust the position of the steel bars.

2. The steel bar protective layer adjustment tool according to claim 1, characterized in that: A circular top plate is arranged at the end of the rotating shaft.

3. The steel bar protective layer adjustment tool according to claim 1, characterized in that: The rotating handle and the sleeve are respectively located on two sides of the steel cage.

4. The steel bar protective layer adjustment tool according to claim 1, characterized in that: The rotating handle is arranged at the middle part of the rotating shaft.

5. The steel bar protective layer adjustment tool according to claim 1, characterized in that: The rotating shaft is a fully threaded rod.

6. The steel bar cover adjustment tool according to claim 1, characterized in that: The length of the sleeve is not less than 30 mm, and the diameter of the sleeve is smaller than the spacing between adjacent steel bars.

7. The steel bar protective layer adjustment tool according to claim 1, characterized in that: The diameter of the rotating shaft is not less than 15 mm.

8. The steel bar cover adjustment tool according to claim 1, characterized in that: The length of the fixing rod is not less than 20 cm.

9. The steel bar cover adjustment tool according to claim 1, characterized in that: The fixing rod and the reinforcement are bound together by steel wires.

10. The steel bar cover adjustment tool according to claim 1, characterized in that: Both ends of the rotating shaft are arranged in bearings, and the bearings are tightly pressed against the inner wall of the template.

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