Novel steel bar wire binding device
By combining the outer spiral guide post and the inner spiral guide sleeve, the problem of wrist strain and low binding efficiency caused by existing rebar tying hook tools is solved, and efficient tightening and binding of the tying wire is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA HYDROPOWER ELEVENTH ENG BUREAU (ZHENGZHOU) CO LTD
- Filing Date
- 2025-05-24
- Publication Date
- 2026-05-19
AI Technical Summary
Existing rebar tying hook tools cause wrist strain for rebar workers and result in low tying efficiency.
A novel rebar tying device is designed, comprising an outer spiral guide post and an inner spiral guide sleeve. The device uses a metal hook to catch the tying wire and utilizes the spiral engagement and guiding reset components of the inner spiral guide sleeve to achieve automatic return of the tying wire, thus avoiding manual rotation.
This technology enables efficient tightening and binding of the tie wire, reducing wrist strain for steelworkers and improving binding efficiency.
Smart Images
Figure CN224259912U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of auxiliary components for rebar lap splicing, and specifically to a novel rebar tying device. Background Technology
[0002] In the process of connecting steel bars during building construction, there are usually three connection techniques: lap splicing, welding and sleeve splicing. Generally, when the diameter of the steel bars in a building project is less than 25mm, lap splicing is commonly used.
[0003] In the existing technology, a rebar tie hook is required during the process of tying and splicing rebars. However, the existing rebar tie hooks are usually just simple iron hooks in their design. The rebar worker tightens the rebar by hooking the tie wire and rotating it. Since the rebar worker has to manually tie the rebar by rotating his wrist, it will cause some strain on the rebar worker's wrist. At the same time, the efficiency of rebar tying is not high. Utility Model Content
[0004] The purpose of this utility model is to provide a new type of rebar tying device to solve the above problems, as detailed below.
[0005] To achieve the above objectives, the present invention provides the following technical solution:
[0006] This utility model provides a novel rebar tying device, comprising an outer spiral guide post and an inner spiral guide sleeve. The bottom end of the outer spiral guide post is fitted with a metal hook for hooking the tying wire via a fixed base assembly. Meanwhile, the outer spiral guide post is coaxially sleeved with the inner spiral guide sleeve, which is spirally engaged with the metal hook to hook the tying wire. By lifting the inner spiral guide sleeve, the outer spiral guide post and the metal hook can be rotated together.
[0007] A guide reset assembly is provided between the top of the outer spiral guide post and the top of the inner spiral guide sleeve, which is used to drive the inner spiral guide sleeve to automatically return to the bottom of the outer spiral guide post.
[0008] Preferably, the fixing seat is coaxially welded to the bottom of the outer spiral guide post, and the metal hook is coaxially interference-fitted with the inner circumference of the fixing seat.
[0009] Preferably, the outer diameter of the metal hook gradually decreases from the inner end to the outer end, and the outer end of the metal hook is pointed.
[0010] Preferably, the guide reset assembly includes an end cap, a top plate, and a bottom plate. The end cap is coaxially and detachably assembled on the top of the outer spiral guide post. The bottom surface of the end cap is coaxially fixed to the top plate. An upper mating hole is coaxially formed in the middle of the top plate, and the outer spiral guide post passes through the upper mating hole in a vertical sliding fit. The bottom plate is located above the top of the inner spiral guide sleeve. A lower mating hole is coaxially formed in the middle of the bottom plate, and the inner spiral guide sleeve passes through the lower mating hole in a vertical sliding fit. At the same time, springs are fixedly connected to both sides of the spiral guide sleeve and the outer spiral guide post, both vertically and vertically.
[0011] Preferably, the top plate has guide holes vertically opened on both sides, and the bottom plate has guide rods vertically fixed on both sides of the top surface. The guide rods correspond one-to-one with the guide holes, and the guide rods pass through the corresponding guide holes in a vertical sliding fit.
[0012] Preferably, the springs are all fitted around the corresponding guide rod in a coaxial clearance fit.
[0013] Preferably, the portion of the guide rod extending out of the top of the guide hole is coaxially fixed with an anti-detachment end having an outer diameter larger than the diameter of the guide hole.
[0014] Preferably, the bottom surface of the base plate is fixedly connected with a plurality of downwardly protruding, round-headed protrusions, and the plurality of protrusions are evenly distributed circumferentially above the top surface of the inner spiral guide sleeve.
[0015] Preferably, when the inner spiral guide sleeve moves to the lowest position of the outer spiral guide post, the spring is in a free state, and all of the protrusions are in contact with the top surface of the inner spiral guide sleeve.
[0016] Preferably, the end cap is coaxially and detachably assembled to the top of the outer spiral guide post via a threaded connection.
[0017] The above-mentioned novel rebar tying device, by means of a metal hook for hooking the tying wire, is assembled and installed at the bottom end of the outer spiral guide post via the fixed base. Simultaneously, an inner spiral guide sleeve, coaxially sleeved around the outer spiral guide post, spirally engages with it. After the inner spiral guide sleeve moves to the bottom of the outer spiral guide post via the spiral engagement, the metal hook hooks the tying wire. By lifting the inner spiral guide sleeve, the outer spiral guide post and the metal hook can rotate together. Thus, through the rotation of the outer spiral guide post and the metal hook... This system allows for the tightening of the binding wire, a simple and easy-to-implement method that achieves efficient tightening and binding. Furthermore, it eliminates the need for steelworkers to rotate their wrists, preventing wrist strain. Because a guide and reset assembly is integrated between the top of the outer spiral guide post and the top of the inner spiral guide sleeve, the guide rod of the guide and reset assembly slides axially along the guide hole. This compresses the spring during the relative movement of the outer spiral guide post and the inner spiral guide sleeve, thus releasing the metal... When the hook separates from the binding wire, the inner spiral guide sleeve automatically returns to the bottom of the outer spiral guide post by releasing the compressed state of the spring. The automatic return of the inner spiral guide sleeve is simple and easy to implement, eliminating the need to operate the outer spiral guide post or move the inner spiral guide sleeve to return it to its original position. This facilitates repeated use of the outer spiral guide post and inner spiral guide sleeve for tightening and binding the binding wire, and also helps to make the tightening and binding operation more efficient. Furthermore, the end cap of the guide reset assembly is removable by means of a threaded engagement. The coaxial assembly is removed from the top of the outer spiral guide post, and then the end cap is detached from the top of the outer spiral guide post by twisting. After that, the guide reset assembly can be removed from the top of the outer spiral guide post by axial movement. The assembly and disassembly of the guide reset assembly outside the outer spiral guide post is simple and easy to implement. It is convenient to quickly assemble the guide reset assembly outside the outer spiral guide post for use, and it is also convenient to maintain the outer spiral guide post, the inner spiral guide rod and the guide reset assembly after the guide reset assembly is disassembled.
[0018] The beneficial effects are as follows: 1. The present invention has a metal hook for hooking the tie wire installed at the bottom of the outer spiral guide post by means of a fixed seat assembly. At the same time, an inner spiral guide sleeve is coaxially sleeved on the outside of the outer spiral guide post and spirally engaged with it. Then, the inner spiral guide sleeve is moved to the bottom of the outer spiral guide post by means of spiral engagement, and the metal hook hooks the tie wire. By holding the inner spiral guide sleeve up, the outer spiral guide post and the metal hook can be rotated together. Thus, the tie wire can be tightened by means of rotation of the outer spiral guide post and the metal hook. The tightening and binding operation of the tie wire is simple and easy to implement, and the tie wire is tightened and bound efficiently. At the same time, the steelworker does not need to rotate his wrist, thus avoiding wrist strain.
[0019] 2. A guide reset assembly is combined between the top of the outer spiral guide post and the top of the inner spiral guide sleeve. By means of the guide rod of the guide reset assembly sliding axially along the guide hole, the spring can be compressed during the relative movement of the outer spiral guide post and the inner spiral guide sleeve. Thus, when the tightening and binding operation of the binding wire is completed and the metal hook is separated from the binding wire, the inner spiral guide sleeve can be automatically returned to the bottom of the outer spiral guide post by releasing the compression state of the spring. The automatic return method of the inner spiral guide sleeve is simple and easy to implement. There is no need to operate the outer spiral guide post or the inner spiral guide sleeve to return to its original position. This facilitates the repeated use of the outer spiral guide post and the inner spiral guide sleeve for tightening and binding operations of the binding wire, and also helps to make the tightening and binding operation of the binding wire more efficient.
[0020] 3. The end cap of the guide reset assembly is detachably coaxially assembled on the top of the outer spiral guide post through a threaded connection. Then, by twisting, the end cap is detached from the top of the outer spiral guide post. After that, the guide reset assembly can be removed from the top of the outer spiral guide post by axial movement. The assembly and disassembly of the guide reset assembly on the outside of the outer spiral guide post is simple and easy to implement. It is convenient to quickly assemble the guide reset assembly on the outside of the outer spiral guide post for use, and at the same time, it is convenient to maintain and repair the outer spiral guide post, inner spiral guide rod and guide reset assembly after the guide reset assembly is disassembled. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 This is an overall isometric schematic diagram of this utility model;
[0023] Figure 2 This is a utility model Figure 1 A schematic diagram of the cross-section;
[0024] Figure 3 This is a utility model Figure 1 A schematic diagram of the rear view axonometric projection;
[0025] Figure 4 This is a utility model Figure 1 External view from the front;
[0026] Figure 5 This is a utility model Figure 1 Left sectional view.
[0027] The annotations in the attached figures are explained as follows:
[0028] 1. Guide reset assembly; 101. End cap; 102. Top plate; 103. Anti-detachment end; 104. Guide hole; 105. Guide rod; 106. Spring; 107. Base plate; 108. Lower mating hole; 109. Upper mating hole; 1010. Protrusion; 2. Outer spiral guide post; 3. Inner spiral guide sleeve; 4. Fixing base; 5. Metal hook. Detailed Implementation
[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0030] See Figures 1-5 As shown, this utility model provides a novel rebar tying device, including an outer spiral guide post 2 and an inner spiral guide sleeve 3. The bottom end of the outer spiral guide post 2 is fitted with a metal hook 5 for hooking the tying wire via a fixing seat 4. At the same time, the outer spiral guide post 2 is coaxially fitted with an inner spiral guide sleeve 3 that is spirally engaged with it. The metal hook 5 hooks the tying wire, and by lifting the inner spiral guide sleeve 3, the outer spiral guide post 2 and the metal hook 5 can be rotated together. The purpose of this arrangement is that after the inner spiral guide sleeve 3 moves to the bottom of the outer spiral guide post 2 through the spiral engagement, the metal hook 5 hooks the tying wire, and by lifting the inner spiral guide sleeve 3, the outer spiral guide post 2 and the metal hook 5 can be rotated together. Thus, the tying wire can be tightened by rotating the outer spiral guide post 2 and the metal hook 5. The tightening and binding operation of the tying wire is simple and easy to implement.
[0031] See Figures 1-3As shown, a guide reset assembly 1 is combined between the top of the outer spiral guide post 2 and the top of the inner spiral guide sleeve 3. This assembly is used to automatically return the inner spiral guide sleeve 3 to the bottom of the outer spiral guide post 2. Specifically, the guide reset assembly 1 includes an end cap 101, a top plate 102, and a bottom plate 107. The end cap 101 is coaxially and detachably combined with the top of the outer spiral guide post 2. The bottom surface of the end cap 101 is coaxially fixed with the top plate 102. An upper mating hole 109 is coaxially formed in the middle of the top plate 102, through which the outer spiral guide post 2 passes in a vertical sliding fit. The bottom plate 107 is located above the top of the inner spiral guide sleeve 3. A lower mating hole 108 is coaxially formed in the middle of the bottom plate 107, through which the inner spiral guide sleeve 3 passes in a vertical sliding fit. Springs 106 are also combined and fixedly connected between the spiral guide sleeve and the outer spiral guide post 2 on both sides. Vertical openings are formed on both sides of the top plate 102. Guide rods 105 are vertically fixed on both sides of the top surface of the base plate 107 and guide holes 104. The guide rods 105 correspond one-to-one with the guide holes 104, and the guide rods 105 pass through the corresponding guide holes 104 in a vertical sliding fit. The springs 106 are sleeved on the outer periphery of the corresponding guide rods 105 in a coaxial clearance fit. The purpose of this arrangement is that, by means of the guide rods 105 of the guide reset assembly 1 sliding axially along the guide holes 104, the springs 106 can be compressed during the relative movement of the outer spiral guide post 2 and the inner spiral guide sleeve 3. Thus, when the tightening and binding operation of the binding wire is completed and the metal hook 5 is separated from the binding wire, the inner spiral guide sleeve 3 can be automatically returned to the bottom of the outer spiral guide post 2 by releasing the compression state of the springs 106. The automatic return of the inner spiral guide sleeve 3 is simple and easy to implement, and there is no need to operate the outer spiral guide post 2 or the inner spiral guide sleeve 3 to return to its original position.
[0032] See Figures 1-5 As shown, the following more detailed optimizations have been made to this scheme. Specifically, the fixing seat 4 is coaxially welded and fixed to the bottom of the outer spiral guide post 2, and the metal hook 5 is coaxially interference-fitted with the inner circumference of the fixing seat 4, so that the metal hook 5 can be securely connected to the bottom of the outer spiral guide post 2 through the fixing seat 4. Optionally, the outer diameter of the metal hook 5 gradually decreases from the inner end to the outer end, and the outer end of the metal hook 5 is pointed, so that the metal hook 5 has a good hooking design after the binding wire is tightened, making it easy to separate smoothly from the binding wire. Furthermore, the part of the guide rod 105 extending out of the top of the guide hole 104 is coaxially fixed with an anti-detachment end 103 with an outer diameter larger than the diameter of the guide hole 104. This setting makes it easy to prevent the guide rod 105 from accidentally separating from the guide hole 104 by using the anti-detachment end 103.
[0033] See Figures 1-5As shown, multiple downward-protruding, round-headed protrusions 1010 are fixedly connected to the bottom circumference of the base plate 107. These protrusions 1010 are evenly distributed circumferentially above the top surface of the inner spiral guide sleeve 3. When the inner spiral guide sleeve 3 moves to the lowest position of the outer spiral guide post 2, the spring 106 is in a free state, and all the protrusions 1010 are in contact with the top surface of the inner spiral guide sleeve 3. This arrangement reduces the frictional resistance when contacting the inner spiral guide sleeve 3, thereby ensuring that the inner spiral guide sleeve 3 and the base plate 107 can rotate smoothly relative to each other with minimal resistance. Optionally, the end cap 101 is coaxially and detachably assembled to the top of the outer spiral guide post 2 via a threaded connection. This arrangement allows the end cap 101 to be detached from the top of the outer spiral guide post 2 by screwing, and then the guide reset assembly 1 can be detached from the top of the outer spiral guide post 2 by axial movement. The assembly and disassembly of the guide reset assembly 1 outside the outer spiral guide post 2 is simple and easy to implement.
[0034] With the above structure, a metal hook 5 for hooking the binding wire is installed at the bottom of the outer spiral guide post 2 via a fixing seat 4. Simultaneously, an inner spiral guide sleeve 3, which is helically fitted to the outer spiral guide post 2, is coaxially sleeved on the outside of the outer spiral guide post 2. After the inner spiral guide sleeve 3 moves to the bottom of the outer spiral guide post 2 via the helical fit, the metal hook 5 hooks the binding wire. By lifting the inner spiral guide sleeve 3, the outer spiral guide post 2 and the metal hook 5 can rotate together. Thus, the binding wire can be tightened by rotating the outer spiral guide post 2 and the metal hook 5. The tightening and binding operation of the tie wire is simple and easy to implement, achieving efficient tightening and binding. Meanwhile, steelworkers do not need to rotate their wrists, thus avoiding wrist strain. Because a guide reset component 1 is combined between the top of the outer spiral guide post 2 and the top of the inner spiral guide sleeve 3, the guide rod 105 of the guide reset component 1 slides axially along the guide hole 104, compressing the spring 106 during the relative movement of the outer spiral guide post 2 and the inner spiral guide sleeve 3. Therefore, after the tightening and binding operation of the tie wire is completed, the metal hook 5 is reconnected to the tie wire. When separated, the inner spiral guide sleeve 3 automatically returns to the bottom of the outer spiral guide post 2 by releasing the compression state through spring 106. The automatic return of the inner spiral guide sleeve 3 is simple and easy to implement, without the need to operate the outer spiral guide post 2 or the inner spiral guide sleeve 3 to return to its original position. This facilitates repeated use of the outer spiral guide post 2 and the inner spiral guide sleeve 3 for tightening and binding the binding wire, and also helps to make the tightening and binding operation of the binding wire more efficient. Furthermore, the end cap 101 of the guide reset assembly 1 is detachable through a threaded engagement. The coaxial assembly is attached to the top of the outer spiral guide post 2. Then, by twisting, the end cap 101 is detached from the top of the outer spiral guide post 2. After that, the guide reset assembly 1 can be removed from the top of the outer spiral guide post 2 by axial movement. The assembly and disassembly of the guide reset assembly 1 outside the outer spiral guide post 2 is simple and easy to implement. It is convenient to quickly assemble the guide reset assembly 1 outside the outer spiral guide post 2 for use. At the same time, it is convenient to disassemble the guide reset assembly 1 later for maintenance of the outer spiral guide post 2, inner spiral guide rod 105 and guide reset assembly 1.
[0035] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.
Claims
1. A novel rebar tying device, comprising an outer spiral guide post (2) and an inner spiral guide sleeve (3), characterized in that: The bottom end of the outer spiral guide post (2) is fitted with a metal hook (5) for hooking the tie wire by a fixing seat (4). At the same time, the outer spiral guide post (2) is coaxially fitted with the inner spiral guide sleeve (3) that is spirally engaged with each other. The metal hook (5) hooks the tie wire, and the outer spiral guide post (2) and the metal hook (5) can be rotated together by holding the inner spiral guide sleeve (3) and lifting it up. A guide reset assembly (1) is provided between the top of the outer spiral guide post (2) and the top of the inner spiral guide sleeve (3) to drive the inner spiral guide sleeve (3) to automatically return to the bottom of the outer spiral guide post (2) by means of the guide reset assembly (1). The guide reset assembly (1) includes an end cap (101), a top plate (102), and a bottom plate (107). The end cap (101) is coaxially and detachably assembled on the top of the outer spiral guide post (2). The bottom surface of the end cap (101) is coaxially fixed with the top plate (102). The top plate (102) has an upper mating hole (109) coaxially opened in the middle of the top plate (102), and the outer spiral guide post (2) passes through the upper mating hole (109) in a vertical sliding fit. The bottom plate (107) is located above the top of the inner spiral guide sleeve (3). The bottom plate (107) has a lower mating hole (108) coaxially opened in the middle of the bottom plate (107), and the inner spiral guide sleeve (3) passes through the lower mating hole (108) in a vertical sliding fit. At the same time, springs (106) are fixedly connected between the upper and lower sides of the spiral guide sleeve and the outer spiral guide post (2).
2. The novel rebar tying device according to claim 1, characterized in that: The fixed seat (4) is coaxially welded to the bottom of the outer spiral guide post (2), and the metal hook (5) is coaxially interference-fitted with the inner circumference of the fixed seat (4).
3. The novel rebar tying device according to claim 1, characterized in that: The outer diameter of the metal hook (5) gradually decreases from the inner end to the outer end, and the outer end of the metal hook (5) is pointed.
4. The novel rebar tying device according to claim 1, characterized in that: The top plate (102) has guide holes (104) vertically opened on both sides, and the bottom plate (107) has guide rods (105) vertically fixed on both sides of the top surface. The guide rods (105) correspond one-to-one with the guide holes (104), and the guide rods (105) pass through the corresponding guide holes (104) in a vertical sliding fit.
5. The novel rebar tying device according to claim 4, characterized in that: The springs (106) are all fitted around the corresponding guide rods (105) in a coaxial clearance fit.
6. The novel rebar tying device according to claim 5, characterized in that: The portion of the guide rod (105) extending out of the top of the guide hole (104) is coaxially fixed with an anti-detachment end (103) whose outer diameter is larger than that of the guide hole (104).
7. The novel rebar tying device according to claim 6, characterized in that: The bottom surface of the base plate (107) is fixed with a plurality of downwardly protruding and round-headed protrusions (1010), and the plurality of protrusions (1010) are evenly distributed circumferentially above the top surface of the inner spiral guide sleeve (3).
8. The novel rebar tying device according to claim 7, characterized in that: When the inner spiral guide sleeve (3) moves to the lowest position of the outer spiral guide post (2), the spring (106) is in a free state, and the multiple protrusions (1010) are in contact with the top surface of the inner spiral guide sleeve (3).
9. A novel rebar tying device according to any one of claims 4-8, characterized in that: The end cap (101) is coaxially and detachably assembled at the top of the outer spiral guide post (2) by means of threaded connection.