Device for sleeving spiral steel bar to periphery of steel bar
By designing a device including hollow columns, connection parts and firmware, and using a driving device to rotate the spiral steel bars simultaneously with the steel bars, the problem of difficulty in spiral steel bars in the prior art is solved, and efficient and economical The set-up effect enhances the connection strength.
Patent Information
- Application Number
- CN202421189419.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-29
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-05-29
AI Technical Summary
The prior art is difficult to quickly, efficiently and economically install spiral steel bars to the periphery of the steel bar, resulting in anchor slippage and decreased connection strength.
A device is designed, including a hollow column, a connecting part and a firmware, and the hollow column and the spiral steel bar are rotated simultaneously through a driving device, so that the spiral steel bar moves in the axial direction in the groove of the steel bar, so as to realize sleeve installation.
It realizes rapid and efficient installation of spiral steel bar sleeves to the periphery of the steel bar, strengthens joint friction and connection strength, and reduces labor and time costs.
Smart Images
Figure CN222477952U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a device for sleeve-fitting a spiral steel bar onto the periphery of a steel bar. Background Art
[0002] Precasting is a method of pouring concrete into reusable molds in a factory, solidifying and hardening it in a controlled environment, and transporting it to the construction site for installation. The precasting method moves most of the work items that originally needed to be done on the construction site to the factory, including beams, columns, floor slabs and other major components are all precast in the factory. Factory production has the advantages of stable environment, no weather impact, small demand for skilled workers and standardized operations. On the construction site, mechanized equipment is used for assembly and hoisting work, and no external scaffolding is required. The exterior wall and decoration are carried out simultaneously, effectively shortening the construction period. Only component assembly, steel bar continuation, and very limited concrete casting are left on the construction site, which can greatly reduce the workload on the construction site. In addition, since traditional wooden formwork is not used on the construction site, it helps to preserve forest resources, is environmentally friendly and can keep the construction site neat and clean.
[0003] The joint of precast parts is crucial to the entire precast structure. Taking the precast column as an example, in the assembly process of different upper and lower precast columns, in order to strengthen the combined strength and tightness between the two, spiral steel bars can be set on the steel bars at the joint to increase the joint friction between the two. However, it is not easy to set the spiral steel bars on the steel bars with protruding gaps, and it often takes a lot of manpower and time. The use of traditional tools or manual steel bar continuation methods may cause anchor slippage, resulting in a decrease in connection strength.
[0004] Therefore, the industry is in urgent need of a device and method that can quickly, efficiently and economically sleeve the spiral steel bar onto the periphery of the steel bar. Utility Model Content
[0005] Therefore, in order to achieve the above-mentioned purpose, an embodiment of the utility model relates to a device for sleeved a spiral steel bar onto the periphery of a steel bar, wherein the periphery of the steel bar has a plurality of grooves arranged at intervals along the axial direction of the steel bar, and the device comprises: a hollow cylinder, wherein the first end of the hollow cylinder has an opening to form a receiving space, wherein the receiving space is used to accommodate at least a portion of the length of the spiral steel bar, and the hollow cylinder comprises a bottom forming the receiving space and an annular circumferential wall connected to the bottom; a connecting portion, wherein the connecting portion is arranged at the second end of the hollow cylinder and is configured to connect to a driving portion of a driving device; and a retaining member, which is arranged inside the hollow cylinder and is configured to retain the free end of the spiral steel bar, wherein the radial outer surface of the spiral steel bar is smaller than and adjacent to the annular circumferential wall of the hollow cylinder, and wherein when the driving device is operated, the driving portion of the driving device drives the hollow cylinder and the spiral steel bar to rotate synchronously.
[0006] Another embodiment of the utility model relates to a method for sleeved a spiral steel bar onto the periphery of a steel bar, wherein the periphery of the steel bar has a plurality of grooves arranged at intervals along the axial direction of the steel bar, and the method comprises: (a) sleeved a portion of the spiral steel bar onto the first end of the steel bar; (b) providing a device; (c) sleeved the hollow cylinder of the device onto the free end of the spiral steel bar, and abutted the free end of the spiral steel bar with abutment located in the hollow cylinder; (d) engaging the driving part of the driving device with the connecting part of the device; and (e) operating the driving device to drive the hollow cylinder and the spiral steel bar to rotate synchronously, thereby moving the spiral steel bar in the plurality of grooves of the steel bar along the axial direction of the steel bar. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] The following drawings are for exemplary purposes only and are not intended to limit the scope of the present invention in any way:
[0008] Figure 1 A schematic diagram showing the steel bars and spiral steel bars shown in the utility model.
[0009] Figure 2A , Figure 2B and Figure 2C A schematic diagram showing a device according to an embodiment of the present invention.
[0010] Figure 3 A schematic diagram showing a device according to another embodiment of the present invention.
[0011] 4A to 4F Schematic diagram showing different stages of the invention in which the spiral steel bar is sleeved onto the periphery of the steel bar. DETAILED DESCRIPTION
[0012] In order to more clearly understand the features, contents and advantages of the present invention and the effects that can be achieved, the present invention is hereby described in detail in the form of embodiments in conjunction with the accompanying drawings. The drawings used therein are only for illustration and description purposes, so the claims of the present invention should not be interpreted or limited based on the proportions and arrangement relationships of the drawings.
[0013] Please refer to Figure 1 , which shows a connecting steel bar 10 used as a precast beam column. The periphery of the outer surface of the steel bar 10 has a plurality of grooves 11 arranged at intervals along its axial direction, and there is a spacing D between adjacent grooves 11. Compared with using a long strip of steel bar 10 alone as a connecting steel bar, the utility model sets a spiral steel bar 20 on the periphery of the steel bar 10 to increase the joint area and friction force, so as to improve the anchoring performance of the connecting steel bars between different precast columns and strengthen the connection strength of the two precast columns. The spiral steel bar 20 has a pitch P, and based on its spring-like spiral structure, it has compressible and stretchable elasticity in its axial direction. In order to allow the first end 21 of the spiral steel bar 20 to be screwed into the steel bar 10 along the axial direction of the steel bar 10, the pitch P of the spiral steel bar 20 matches the spacing D between adjacent grooves 11 of the steel bar 10, and the pitch P of the spiral steel bar 20 is roughly an integer multiple of the spacing D between adjacent grooves 11 of the steel bar 10. In one embodiment of the present invention, the pitch P of the spiral steel bar 20 is approximately twice the spacing D between adjacent grooves 11 of the steel bar 10. In other embodiments of the present invention, the pitch P of the spiral steel bar 20 is approximately three times the spacing D between adjacent grooves 11 of the steel bar 10. In addition, the radial dimension of the spiral steel bar 20 matches the radial dimension of the steel bar 10. When the first end 21 of the spiral steel bar 20 is screwed into the steel bar 10, the spiral steel bar 20 fits in the groove 11 of the steel bar 10, so that the spiral steel bar 20 will not easily slide relative to the steel bar 10, so as to provide sufficient clamping force between the spiral steel bar 20 and the steel bar 10.
[0014] Please refer to Figure 2A , Figure 2B and Figure 2C The device 30 shown can be made of metal, such as iron or stainless steel. The device 30 includes a hollow cylinder 31, a connecting portion 32 and a stopper 33. The first end 311 of the hollow cylinder 31 has an opening to form a receiving space S therein, and the receiving space S can be used to accommodate at least a portion of the length of the spiral steel bar 20. The hollow cylinder 31 includes a bottom 313 forming the receiving space S and an annular circumferential wall 314 connected to the bottom 313. In order to allow the spiral steel bar 20 to be inserted into the receiving space S of the hollow cylinder 31, the radial outer surface of the spiral steel bar 20 is smaller than the annular circumferential wall 314, and when the spiral steel bar 20 is inserted into the receiving space S of the hollow cylinder 31, the radial outer surface of the spiral steel bar 20 is adjacent to the annular circumferential wall 314 of the hollow cylinder 31.
[0015] like Figure 2A , Figure 2B and Figure 2C As shown, the abutment 33 is disposed in the hollow cylinder 31 and is configured to abut the second end 22 (i.e., the free end) of the spiral steel bar 20. In one embodiment of the present invention, the abutment 33 is a polyhedron, wherein the first surface 331 of the abutment 33 is fixed to the bottom 313 of the accommodating space S, the second surface 332 of the abutment 33 is fixed to the annular peripheral wall 314, and the third surface 333 of the abutment 33 is configured to be suitable for abutting the second end 22 (i.e., the free end) of the spiral steel bar 20. In other embodiments of the present invention, the abutment 33 is not limited to a polyhedron, and can also be other types for abutting the second end 22 of the spiral steel bar 20.
[0016] In another embodiment of the present invention, Figure 3 As shown, the annular peripheral wall 314 of the hollow cylinder 31 may have a spiral protrusion 3141 thereon, and the spiral protrusion 3141 of the annular peripheral wall 314 is configured to cooperate with the spiral steel bar 20, so that the spiral steel bar 20 can be screwed into the accommodating space S of the hollow cylinder 31 along the spiral protrusion 3141 of the annular peripheral wall 314. Figure 4C When the spiral steel bar 20 and the hollow cylinder 31 are driven by the spiral protrusion 3141, the spiral protrusion 3141 can strengthen the connection between the spiral steel bar 20 and the hollow cylinder 31, so that when one is rotated, the other can be driven. In one embodiment of the utility model, the protrusion height of the spiral protrusion 3141 of the annular peripheral wall 314 of the hollow cylinder 31 is about 1mm to 3mm.
[0017] Please also refer to Figure 2B , 2C and Figure 4B , the connecting portion 32 is disposed at the second end 312 of the hollow cylinder 31 opposite to the first end 311, and is configured to be connected to the driving portion 41 of the driving device 40. In one embodiment of the utility model, the connecting portion 32 is a polygonal cylinder, such as a hexagonal cylinder, one end of the polygonal cylinder is fixed to the second end 312 of the hollow cylinder 31, and the other end of the hexagonal cylinder can be used to connect to the driving portion 41 of the driving device 40. The driving device 40 has an inner polygonal sleeve, such as an inner hexagonal sleeve. The inner polygonal sleeve of the driving device 40 matches the polygonal cylinder of the connecting portion 32. In other embodiments of the utility model, the driving device 40 has a polygonal protrusion, and the connecting portion 32 has a polygonal accommodating portion (not shown) matching the polygonal protrusion.
[0018] Please refer to 4A to 4F , which shows schematic diagrams of the present invention in different stages of sleeve-fitting the spiral steel bar 20 to the periphery of the steel bar 10. Step (a), such as Figure 4A As shown, a portion of the spiral steel bar 20 is sleeved on the second end 13 of the steel bar 10. In detail, according to the diameter of the steel bar 10, a spiral steel bar 20 of a suitable size is selected. The first end 21 of the spiral steel bar 20 is aligned with the groove 11 of the second end 13 of the steel bar 10, and a small portion of the spiral steel bar 20 can be manually inserted into the groove 11 of the steel bar 10, so that the spiral steel bar 20 and the groove 11 of the steel bar 10 form a preliminary meshing, ensuring that the spiral steel bar 20 can smoothly enter the groove 11 of the steel bar 10. Then, the spiral steel bar 20 can be manually rotated several times to move the spiral steel bar 20 along the axial direction of the steel bar 10 toward the first end 12 of the steel bar 10 by a predetermined distance to ensure the matching degree of the spiral steel bar 20 and the groove 11 of the steel bar 10. In one embodiment of the utility model, the predetermined distance is not greater than one third of the length of the spiral steel bar 20.
[0019] Step (b), such as Figure 4B As shown, a device 30 is provided that can be sleeved on the spiral steel bar 20. In detail, according to the size of the spiral steel bar 20, a device 30 of a suitable size is selected. Step (c) is to sleeve the hollow cylinder 31 of the device 30 on the second end 22 of the spiral steel bar 20. Specifically, step (c), as Figure 4B and 4C As shown, the second end 22 of the spiral steel bar 20 is sleeved in the accommodating space S of the opening of the hollow cylinder 31 until the second end 22 (i.e., the free end) of the spiral steel bar 20 abuts against the third surface 333 of the abutment member 33 in the hollow cylinder 31 and contacts the bottom 313 of the hollow cylinder 31 (see FIG. Figure 2A ). Through the meshing of the second end 22 of the spiral steel bar 20 and the third surface 333 of the abutment 33, during the rotation of the device 30, the spiral steel bar 20 and the device 30 can rotate synchronously through the meshing. In another embodiment of the utility model, the annular peripheral wall 314 of the hollow cylinder 31 further has a spiral protrusion 3141 (see Figure 3 ). In the process of sleeve-mounting the hollow cylinder 31 of the device 30 on the spiral steel bar 20, the spiral protrusion 3141 of the annular peripheral wall 314 of the hollow cylinder 31 fits with the spiral steel bar 20. The spiral protrusion 3141 of the annular peripheral wall 314 of the hollow cylinder 31 has a guiding function, which can guide the spiral steel bar 20 to advance along a predetermined spiral path during the sleeve-mounting process, and limit the movement of the spiral steel bar 20 in the axial direction to prevent axial slippage during the rotation process.
[0020] Step (d), such as Figure 4C and 4DAs shown, the inner polygonal sleeve of the driving part 41 of the driving device 40 is inserted into the polygonal column of the connecting part 32, so that the driving part 41 of the driving device 40 is engaged with the connecting part 32 of the device 30. In one embodiment of the utility model, the driving device 40 can be an electric or pneumatic driving device. In other embodiments of the utility model, the polygonal protrusion of the driving part 41 of the driving device 40 can be inserted into the polygonal receiving part (not shown) of the connecting part 32, so that the driving part 41 of the driving device 40 is engaged with the connecting part 32 of the device 30.
[0021] Step (e), such as Figure 4D and 4E As shown, the driving device 40 is operated to drive the hollow cylinder 31 and the spiral steel bar 20 to rotate synchronously, thereby moving the spiral steel bar 20 in the plurality of grooves 11 of the steel bar 10 along the axial direction of the steel bar 10. The driving device 40 provides a rotational torque, and the third surface 333 of the abutment 33 abuts and engages with the second end 22 of the spiral steel bar 20 (see FIG. Figure 2A and Figure 4B ), so the hollow cylinder 31 drives the spiral steel bar 20 under the drive, so that the hollow cylinder 31 and the spiral steel bar 20 rotate synchronously in the same direction. During the rotation process, the spiral steel bar 20 is guided by the groove 11 of the steel bar 10, moves forward along the spiral path, and gradually sleeves onto the periphery of the steel bar 10 until the second end 22 of the spiral steel bar 20 is roughly aligned with the second end 13 of the steel bar 10. Subsequently, the rotation of the driving device 40 is stopped, so that the hollow cylinder 31 and the spiral steel bar 20 also stop rotating.
[0022] The driving device 40 is removed to separate the driving portion 41 of the driving device 40 from the connecting portion 32. Next, the device 30 is removed from the steel bar 10 and the spiral steel bar 20. Figure 4F The spiral steel bar 20 is shown to be sleeved onto the steel bar 10. In another embodiment of the present invention, when the annular peripheral wall 314 of the hollow cylinder 31 has a spiral protrusion 3141 (see Figure 3 ), manually rotate the device 30 in the direction opposite to the screwing-in direction to separate the device 30 from the reinforcing bar 10 and the spiral steel bar 20, and store the device 30 for next use.
[0023] The terms "a" or "an" herein are used to describe the elements and components of the present invention. This term is only for the convenience of description and to give the basic concept of the present invention. This description should be understood to include one or at least one, and unless otherwise clearly indicated, the singular also includes the plural. When used with the word "comprising" in the claims, the term "a" may mean one or more than one. In addition, the term "or" herein means the same as "and / or".
[0024] Unless otherwise specified, spatial descriptions such as "above", "below", "upward", "left", "right", "downward", "body", "base", "vertical", "horizontal", "side", "higher", "lower", "upper", "above", "below", etc. are indicated with respect to the directions shown in the figures. It should be understood that the spatial descriptions used herein are for illustrative purposes only, and actual implementations of the structures described herein may be spatially arranged in any relative orientation, and this limitation does not change the advantages of the embodiments of the utility model. For example, in the description of some embodiments, an element is disposed "on" another element may cover the situation where the former element is directly on the latter element (for example, in physical contact with the latter element) and the situation where one or more intervening elements are located between the former element and the latter element.
[0025] As used herein, the terms "substantially," "substantially," "approximately," and "about" are used to describe and take into account minor variations. When used in conjunction with an event or circumstance, these terms may mean both the situation where the event or circumstance explicitly occurs and the situation where the event or circumstance closely occurs.
[0026] The embodiments described above are only for illustrating the technical ideas and features of the present invention, and their purpose is to enable technicians in the relevant field to understand the content of the present invention and implement it accordingly. They cannot be used to limit the patent scope of the present invention. Equivalent changes or modifications made according to the spirit disclosed in the present invention should still be included in the patent scope of the present invention.
[0027] Explanation of symbols
[0028] 10: Steel bars
[0029] 11: Groove
[0030] 12: First End
[0031] 13: Second End
[0032] 20: Spiral steel bars
[0033] 21: First End
[0034] 22: Second End
[0035] 30: Installation
[0036] 31: Hollow cylinder
[0037] 32: Connection
[0038] 33: Firmware
[0039] 40: Drive device
[0040] 41: Driving unit
[0041] 311: First End
[0042] 312: Second End
[0043] 313: Bottom
[0044] 314: Annular wall
[0045] 331: Side 1
[0046] 332: Side 2
[0047] 333: The third side
[0048] 3141: Spiral protrusion
[0049] D: Spacing
[0050] P: Pitch
[0051] S: Storage space.
Claims
1. A device for sleeve-fitting a spiral steel bar onto the periphery of a steel bar, characterized in that The periphery of the steel bar has a plurality of grooves arranged at intervals along the axial direction of the steel bar, and the device comprises: A hollow cylinder, wherein a first end of the hollow cylinder has an opening to form a receiving space, wherein the receiving space is used to receive at least a portion of the length of the spiral steel bar, and the hollow cylinder comprises a bottom forming the receiving space and an annular peripheral wall connected to the bottom; a connecting portion, the connecting portion being disposed at the second end of the hollow cylinder and being configured to connect to a driving portion of a driving device; and a stopper, which is disposed inside the hollow cylinder and is configured to stop the free end of the spiral steel bar. The radial outer surface of the spiral steel bar is smaller than and adjacent to the annular circumferential wall of the hollow cylinder, and when the driving device is operated, the driving part of the driving device drives the hollow cylinder and the spiral steel bar to rotate synchronously.
2. The device according to claim 1, characterized in that The abutment firmware comprises: A first surface, which is fixed to the bottom of the accommodating space; A second surface fixed to the annular peripheral wall; and The third surface is configured to secure the free end of the spiral steel bar.
3. The device according to claim 1, characterized in that The connecting portion is a polygonal column, one end of which is fixed to the second end of the hollow column; The driving device is provided with an inner polygonal sleeve matching with the polygonal column.
4. The device according to claim 1, characterized in that The driving device has a polygonal protrusion, and the connecting portion has a polygonal receiving portion matching the polygonal protrusion.
5. The device according to claim 1, characterized in that The annular peripheral wall of the hollow cylinder has a spiral protrusion thereon, and the spiral protrusion of the annular peripheral wall is configured to cooperate with the spiral steel bar.
6. The device according to claim 5, characterized in that The protrusion height of the spiral protrusion of the annular peripheral wall of the hollow cylinder is about 1 mm to 3 mm.
7. The device according to claim 1, characterized in that There is a spacing between the adjacent grooves of the steel bar, and the spiral steel bar has a pitch, and the pitch of the spiral steel bar is substantially twice the spacing between the adjacent grooves of the steel bar.