Novel steel bar hooking mechanism capable of rotating forwards and backwards

Abstract

The invention discloses a novel steel bar hooking mechanism capable of rotating forwards and backwards, and belongs to the technical field of engineering tools. The stabbing hook mechanism comprises a shell and a stabbing hook, the stabbing hook is fixedly connected with a screw rod, the screw rod is in sliding connection with the shell, the screw rod is provided with a spiral groove, the outer side of the screw rod is sleeved with a guide sleeve, a protruding point is arranged in the guide sleeve and embedded into the spiral groove, and the shell is provided with two blocking pieces used for limiting the guide sleeve to move in the axial direction of the shell at the two ends of the guide sleeve. The shell is slidably connected with a pushing piece, the pushing piece is provided with two sets of one-way limiting mechanisms used for limiting one-way rotation of the guide sleeve, the limiting directions of the two sets of one-way limiting mechanisms are opposite, the two sets of one-way limiting mechanisms are separated from and combined with the guide sleeve through sliding of the pushing piece, and the shell is provided with a fixing mechanism used for fixing the pushing piece. According to the semi-automatic hooking device, the pushing piece is matched with the two sets of one-way limiting mechanisms, the screw rod can rotate in the forward direction and the reverse direction, and therefore the two functions of wire binding and wire releasing can be achieved through the semi-automatic hooking device.

Description

Technical Field

[0001] The invention relates to the technical field of engineering tools, in particular to a novel steel bar hooking mechanism capable of positive and negative rotation. Background Art

[0002] Rebar engineering is the top priority of construction engineering and is now increasingly used in construction. The quality of steel bar binding determines the quality of the building structure. At present, there are semi-automatic steel bar binding hooks on the market, which use a spiral rod to enable the hook to rotate when pulled, thereby automatically tightening the wire. Although it solves the shortcomings of traditional binding tools to a certain extent, workers still face many problems in actual use. For example, the existing semi-automatic hook mechanism cannot automatically reverse to release the wire, so a downward hook mechanism is needed to solve this problem. Summary of the invention

[0003] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or be understood by implementing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the description and other drawings of the description.

[0004] The purpose of the present invention is to overcome the above-mentioned shortcomings and provide a new type of steel bar hooking mechanism which can rotate forward and reverse.

[0005] To achieve the above-mentioned purpose, the technical solution of the present invention is: a new type of steel bar hooking mechanism that can rotate forward and backward, including a shell and a hook, the hook is fixedly connected with a spiral rod, the spiral rod is slidably and rotatably connected with the shell, the spiral rod is provided with a spiral groove, the outer side of the spiral rod is provided with a guide sleeve, the guide sleeve is provided with a convex point, the convex point is embedded in the spiral groove, the shell is provided with two blocking members at both ends of the guide sleeve for limiting the axial movement of the guide sleeve along the shell, the shell is slidably connected with a push piece, the push piece is provided with two groups of one-way limiting mechanisms for limiting the one-way rotation of the guide sleeve, the limiting directions of the two groups of one-way limiting mechanisms are opposite, the two groups of one-way limiting mechanisms are clutched and engaged with the guide sleeve through the sliding of the push piece, and the shell is provided with a fixing mechanism for fixing the push piece.

[0006] By adopting the above technical scheme, the guide sleeve can only rotate around the spiral rod due to the obstruction of the blocking member. When the iron wire is hooked on the hook and the shell is pulled, the spiral rod will slide to the outside of the shell. Since one of the one-way limit mechanisms limits the rotation of the guide sleeve, and the convex point on the guide sleeve needs to move relative to the spiral rod along the spiral groove, the spiral rod will rotate, thereby driving the hook to rotate so that the iron wire is automatically tightened, thereby realizing semi-automatic binding of the steel bars. When the spiral rod is reset, since the one-way limit mechanism only limits one-way rotation, the guide sleeve can rotate at this time, so the spiral rod does not rotate at this time, thereby keeping the iron wire in a tight state. By pushing, another set of one-way limit mechanisms can be driven to cooperate with the guide sleeve. At this time, the direction in which the guide sleeve is restricted to rotate is opposite to that before. In this state, the spiral rod does not rotate when being pulled out, but rotates in the opposite direction during the reset process, thereby untying the iron wire wrapped around the hook, thereby realizing wire untying.

[0007] Preferably, the one-way limiting mechanism comprises two spring rings and two semi-inner ratchets, the two spring rings are respectively fixedly connected to the two ends of the guide sleeve, the springs on the two spring rings face opposite directions, the two semi-inner ratchets are respectively fixed to the two ends of the push piece, the ratchet teeth of the two semi-inner ratchets face opposite directions, and the two semi-inner ratchets are respectively engaged with the springs on the two spring rings. The present invention utilizes the springs on the spring rings to cooperate with the ratchet teeth on the semi-inner ratchets, when the guide sleeve rotates in the rotatable direction, the springs will use their own elastic deformation to pass over the ratchet teeth on the semi-inner ratchet, and when it rotates in the non-rotatable direction, the springs will be inserted into the tooth grooves between the ratchet teeth to limit the rotation of the guide sleeve, the two groups of spring rings and semi-inner ratchets are in opposite directions, the sliding of the push piece will cause one of the semi-inner ratchets to separate from the spring ring, and the other semi-inner ratchet will engage with the other spring ring, thereby realizing the switching of the limiting direction, so that the spiral rod can rotate in both positive and negative directions.

[0008] Preferably, the fixing mechanism comprises a clamping column, a limiting member and an elastic member 1, the clamping column is fixedly connected to the push member, the clamping column is provided with a clamping slot, the limiting member is slidably connected to the shell, the limiting member is embedded in the clamping slot, and the elastic member 1 is arranged between the limiting member and the shell. The present invention utilizes the elastic force of the elastic member 1 to enable the limiting member to remain embedded in the clamping slot so as to limit the clamping column, thereby fixing the push member, and by pushing the limiting member to slide in a direction to overcome the elastic force of the elastic member 1, the limiting member can be disengaged from the clamping slot, thereby releasing the limit on the push member.

[0009] Preferably, the number of the fixing mechanisms is one group, the fixing mechanisms are arranged on one side of the push piece, the other side of the push piece is fixedly connected with a push column, and a second elastic member is arranged between the push column and the housing. The present invention utilizes the elastic force of the second elastic member to keep the push piece always on one side, so that one group of one-way limiting mechanisms always cooperates with the guide sleeve, and by pushing the push column to drive the push piece to slide in the direction of overcoming the elastic force of the second elastic member, and fixing it through the fixing mechanism, another group of one-way limiting mechanisms can be activated.

[0010] Preferably, a tension spring is provided between the spiral tube and the housing, one end of the tension spring is connected to the spiral rod through a connecting mechanism, the other end of the tension spring is connected to the housing through an adjusting mechanism for adjusting the elastic force of the tension spring, and a retaining ring for limiting the position of the spiral rod is provided in the housing. The present invention utilizes the tension spring to enable the spiral rod to automatically reset after being pulled out, utilizes the adjusting mechanism to adjust the initial elastic force of the tension spring, thereby avoiding the problem of the iron wire being broken, and utilizes the retaining ring to fix the initial position of the screw rod after resetting, thereby facilitating the adjustment of the elastic force.

[0011] Preferably, the connecting mechanism comprises a sliding member, the sliding member is rotatably connected to the spiral rod, the sliding member is slidably connected to the housing, a guide mechanism for limiting the rotation of the sliding member is provided in the housing, and one end of the tension spring is mounted on the connecting member. The present invention utilizes a sliding member that is limited by a guide mechanism and can only slide, so that the tension spring will not be affected by the rotation of the spiral rod.

[0012] Preferably, the guide mechanism comprises a limit bar, the limit bar is fixedly connected to the inner wall of the housing, the sliding member is provided with a slide groove, and the slide groove cooperates with the limit bar. The present invention utilizes the limit bar and the slide groove to cooperate with each other so that the sliding member will not be driven to rotate by the screw rod.

[0013] Preferably, a thrust bearing is provided between the spiral rod and the sliding member. The present invention utilizes the thrust bearing to reduce the resistance between the spiral rod and the sliding member when subjected to the tension of the tension spring.

[0014] Preferably, the adjustment mechanism comprises a screw and a connecting plate, the connecting plate is slidably connected in the housing, the screw is rotatably connected to the connecting plate, the screw is threadedly connected to the housing, and one end of the tension spring is mounted on the connecting plate. The present invention can drive the connecting plate to move up and down by rotating the screw, thereby controlling the distance between the connecting plate and the sliding member in the initial position, achieving the effect of changing the deformation of the tension spring and realizing the adjustment of the elastic force.

[0015] Preferably, the screw rod is fixedly connected with a knocking block. The present invention can conveniently correct the steel bar by using the knocking block.

[0016] In summary, the beneficial effects of the present invention are: 1. By using the push piece and two sets of one-way limit mechanisms, the spiral rod can rotate in both positive and negative directions, so that the semi-automatic hook tying device can be used to realize the two functions of wire tying and wire untying.

[0017] 2. By utilizing the coordination among the adjusting mechanism, the tension spring and the retaining ring, the initial elastic force of the tension spring can be adjusted, thereby avoiding the problem of the iron wire being twisted off.

[0018] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure.

[0019] Undoubtedly, these and other objects of the present invention will become more apparent after the following detailed description of the preferred embodiment described with reference to various figures and drawings.

[0020] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, one or several preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation of the present invention.

[0022] In the drawings, the same reference numerals are used for the same components and the drawings are schematic and not necessarily drawn to scale.

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only one or several embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on such drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of the overall structure; Figure 2 It is a schematic diagram of the structure of a one-way limit mechanism; Figure 3 It is a schematic diagram of the fixed mechanism structure; Figure 4 It is a schematic diagram of the cross-sectional structure; Figure 5 for Figure 4 A schematic diagram of the local enlarged structure at B in the middle; Figure 6 for Figure 4 Schematic diagram of the local enlarged structure at point A in the middle.

[0025] Explanation of the main reference numerals: 1. Shell; 2. Hook; 3. Screw rod; 4. Spiral groove; 5. Guide sleeve; 6. Bump; 7. Blocking member; 8. Pushing member; 9. Shrapnel ring; 10. Semi-inner ratchet; 11. Clamping column; 12. Limiting member; 13. Elastic member 1; 14. Clamping groove; 15. Pushing column; 16. Elastic member 2; 17. Tension spring; 18. Retaining ring; 19. Sliding member; 20. Limiting strip; 21. Thrust bearing; 22. Screw rod; 23. Connecting plate; 24. Knocking block. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but are not used to limit the present invention.

[0027] In addition, in the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. However, if it is indicated as a direct connection, it means that the two connected bodies are not connected through a transition structure, but are connected to form a whole through a connecting structure. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0029] In the present invention, unless otherwise clearly specified and limited, the first feature "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0030] like Figure 1-6 As shown, a new type of steel bar hooking mechanism that can rotate forward and backward includes a shell 1 and a hook 2, the hook 2 is fixedly connected with a spiral rod 3, the spiral rod 3 is slidably and rotatably connected with the shell 1, the spiral rod 3 is provided with a spiral groove 4, the outer side of the spiral rod 3 is provided with a guide sleeve 5, the guide sleeve 5 is provided with a convex point 6, the convex point 6 is embedded in the spiral groove 4, the shell 1 is provided with two blocking members 7 at both ends of the guide sleeve 5 for limiting the axial movement of the guide sleeve 5 along the shell 1, the shell 1 is slidably connected with a push piece 8, the push piece 8 is provided with two groups of one-way limiting mechanisms for limiting the one-way rotation of the guide sleeve 5, the limiting directions of the two groups of one-way limiting mechanisms are opposite, the two groups of one-way limiting mechanisms are clutched and engaged with the guide sleeve 5 through the sliding of the push piece 8, and the shell 1 is provided with a fixing mechanism for fixing the push piece 8.

[0031] When the guide sleeve 5 is pulled out of the casing 1, the screw rod 3 will slide to the outside of the casing 1. Since one of the one-way limit mechanisms limits the rotation of the guide sleeve 5, and the convex point 6 on the guide sleeve 5 needs to move relative to the screw rod 3 along the spiral groove 4, the screw rod 3 will rotate, thereby driving the hook 2 to rotate so that the wire is automatically tightened, thereby realizing semi-automatic binding of the steel bars. When the screw rod 3 is reset, since the one-way limit mechanism only limits one-way rotation, the guide sleeve 5 can rotate at this time, so the screw rod 3 does not rotate at this time, thereby keeping the wire in a tight state. By pushing, another set of one-way limit mechanisms can be driven to cooperate with the guide sleeve 5. At this time, the guide sleeve 5 is restricted from rotating in the opposite direction to the previous direction. In this state, the screw rod 3 does not rotate when being pulled out, but rotates in the opposite direction during the reset process, thereby untying the wire wrapped around the hook 2 to achieve wire untying.

[0032] The one-way limiting mechanism includes two spring rings 9 and two semi-inner ratchets 10. The two spring rings 9 are respectively fixedly connected to the two ends of the guide sleeve 5. The springs on the two spring rings 9 face opposite directions. The two semi-inner ratchets 10 are respectively fixed to the two ends of the push piece 8. The ratchet teeth of the two semi-inner ratchets 10 face opposite directions. The two semi-inner ratchets 10 are respectively engaged with the springs on the two spring rings 9. By utilizing the spring clips on the spring clip ring 9 and the ratchet teeth on the semi-inner ratchet 10, when the guide sleeve 5 rotates in the rotatable direction, the spring clips will use their own elastic deformation to pass over the ratchet teeth on the semi-inner ratchet 10, and when rotating in the non-rotatable direction, the spring clips will be inserted into the tooth grooves between the ratchet teeth to limit the rotation of the guide sleeve 5. The two groups of spring clip rings 9 and the semi-inner ratchet 10 are now rotating in opposite directions. The sliding of the push piece 8 will cause one of the semi-inner ratchet wheels 10 to separate from the spring clip ring 9, while the other semi-inner ratchet wheel 10 will engage with the other spring clip ring 9, thereby realizing the switching of the limiting direction, so that the spiral rod 3 can rotate in both forward and reverse directions.

[0033] The fixing mechanism includes a clamping column 11, a limiting member 12 and an elastic member 13. The clamping column 11 is fixedly connected to the push member 8. The clamping column 11 is provided with a clamping slot 14. The limiting member 12 is slidably connected to the housing 1. The limiting member 12 is embedded in the clamping slot 14. The elastic member 13 is arranged between the limiting member 12 and the housing 1. The elastic force of the elastic member 13 can keep the limiting member 12 embedded in the clamping slot 14 to limit the clamping column 11, thereby fixing the push member 8. By pushing the limiting member 12 to slide in a direction to overcome the elastic force of the elastic member 13, the limiting member 12 can be disengaged from the clamping slot 14, thereby releasing the limit on the push member 8.

[0034] The number of the fixing mechanism is one group, and the fixing mechanism is arranged on one side of the push piece 8, and the other side of the push piece 8 is fixedly connected with a push column 15, and an elastic member 2 16 is arranged between the push column 15 and the housing 1. The elastic force of the elastic member 2 16 can keep the push piece 8 on one side at all times, so that one group of the one-way limiting mechanisms is always matched with the guide sleeve 5, and the push piece 8 is driven to slide in the direction of overcoming the elastic force of the elastic member 2 16 by pushing the push column 15, and fixed by the fixing mechanism, so that the other group of the one-way limiting mechanisms can be activated.

[0035] A tension spring 17 is provided between the spiral tube and the housing 1, one end of the tension spring 17 is connected to the spiral rod 3 through a connecting mechanism, and the other end of the tension spring 17 is connected to the housing 1 through an adjusting mechanism for adjusting the elastic force of the tension spring 17, and a retaining ring 18 for limiting the spiral rod 3 is provided in the housing 1. The tension spring 17 can automatically reset the spiral rod 3 after being pulled out, and the adjusting mechanism can adjust the initial elastic force of the tension spring 17 to avoid the problem of the wire being broken, and the retaining ring 18 can fix the initial position of the screw rod 22 after reset, so as to facilitate the adjustment of the elastic force.

[0036] The connection mechanism includes a sliding member 19, which is rotationally connected to the spiral rod 3, and the sliding member 19 is slidably connected to the housing 1. A guide mechanism for limiting the rotation of the sliding member 19 is provided in the housing 1, and one end of the tension spring 17 is mounted on the connection member. The sliding member 19 that can only slide due to the limited position of the guide mechanism can prevent the tension spring 17 from being affected by the rotation of the spiral rod 3.

[0037] The guide mechanism includes a limit bar 20, which is fixedly connected to the inner wall of the housing 1, and the sliding member 19 is provided with a slide groove, which cooperates with the limit bar 20. The limit bar 20 and the slide groove cooperate with each other, so that the sliding member 19 will not be driven by the screw rod 3 to rotate.

[0038] A thrust bearing 21 is provided between the screw rod 3 and the sliding member 19. The thrust bearing 21 can reduce the resistance between the screw rod 3 and the sliding member 19 when the tension of the tension spring 17 is applied.

[0039] The adjustment mechanism includes a screw 22 and a connecting plate 23. The connecting plate 23 is slidably connected in the housing 1. The screw 22 is rotatably connected to the connecting plate 23. The screw 22 is threadedly connected to the housing 1. One end of the tension spring 17 is mounted on the connecting plate 23. The connecting plate 23 can be driven to move up and down by rotating the screw 22, thereby controlling the distance between the connecting plate 23 and the sliding member 19 at the initial position, achieving the effect of changing the deformation of the tension spring 17 and realizing the adjustment of the elastic force.

[0040] The screw rod 22 is fixedly connected with a knocking block 24. The knocking block 24 can be used to conveniently correct the steel bar.

[0041] It should be noted that many specific details are set forth in the above description to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

Claims

1. A new type of steel bar hooking mechanism capable of forward and reverse rotation, comprising a housing (1) and a hook (2), characterized in that: The hook (2) is fixedly connected to a spiral rod (3), and the spiral rod (3) is slidably and rotatably connected to the housing (1). The spiral rod (3) is provided with a spiral groove (4). A guide sleeve (5) is sleeved on the outer side of the spiral rod (3), and a convex point (6) is arranged inside the guide sleeve (5). The convex point (6) is embedded in the spiral groove (4). The housing (1) is provided with two blocking members (7) at both ends of the guide sleeve (5) for limiting the axial movement of the guide sleeve (5) along the housing (1). The housing (1) is slidably connected to a push member (8), and the push member (8) is provided with two groups of one-way limiting mechanisms for limiting the one-way rotation of the guide sleeve (5). The limiting directions of the two groups of one-way limiting mechanisms are opposite. The two groups of one-way limiting mechanisms are engaged and disengaged with the guide sleeve (5) by the sliding of the push member (8). The housing (1) is provided with a fixing mechanism for fixing the push member (8); The one-way limiting mechanism comprises two spring rings (9) and two semi-inner ratchets (10). The two spring rings (9) are respectively fixedly connected to the two ends of the guide sleeve (5). The springs on the two spring rings (9) face in opposite directions. The two semi-inner ratchets (10) are respectively fixed to the two ends of the push piece (8). The ratchet teeth of the two semi-inner ratchets (10) face in opposite directions. The two semi-inner ratchets (10) are respectively meshed with the springs on the two spring rings (9).

2. The new type of rebar hooking mechanism capable of forward and reverse rotation according to claim 1 is characterized in that: The fixing mechanism comprises a clamping column (11), a limiting member (12) and an elastic member (13); the clamping column (11) is fixedly connected to the pushing member (8); the clamping column (11) is provided with a clamping groove (14); the limiting member (12) is slidably connected to the housing (1); the limiting member (12) is embedded in the clamping groove (14); and the elastic member (13) is arranged between the limiting member (12) and the housing (1).

3. The new type of rebar hooking mechanism capable of forward and reverse rotation according to claim 2 is characterized in that: The number of the fixing mechanisms is one group, and the fixing mechanisms are arranged on one side of the push member (8). A push column (15) is fixedly connected to the other side of the push member (8), and a second elastic member (16) is arranged between the push column (15) and the housing (1).

4. The new type of rebar hooking mechanism capable of forward and reverse rotation according to claim 1 is characterized in that: A tension spring (17) is provided between the spiral rod (3) and the housing (1); one end of the tension spring (17) is connected to the spiral rod (3) via a connecting mechanism; the other end of the tension spring (17) is connected to the housing (1) via an adjusting mechanism for adjusting the elastic force of the tension spring (17); a retaining ring (18) for limiting the spiral rod (3) is provided in the housing (1).

5. The new type of rebar hooking mechanism capable of forward and reverse rotation according to claim 4 is characterized in that: The connecting mechanism comprises a sliding member (19), the sliding member (19) being rotatably connected to the spiral rod (3), the sliding member (19) being slidably connected to the housing (1), a guiding mechanism for limiting the rotation of the sliding member (19) being provided in the housing (1), and one end of the tension spring (17) being mounted on the sliding member (19).

6. The new type of rebar hooking mechanism capable of forward and reverse rotation according to claim 5 is characterized in that: The guiding mechanism comprises a limiting strip (20), the limiting strip (20) being fixedly connected to the inner wall of the housing (1), and the sliding member (19) being provided with a sliding groove, the sliding groove being matched with the limiting strip (20).

7. The new type of rebar hooking mechanism capable of forward and reverse rotation according to claim 5 is characterized in that: A thrust bearing (21) is provided between the screw rod (3) and the sliding member (19).

8. The new type of rebar hooking mechanism capable of forward and reverse rotation according to claim 7 is characterized in that: The adjustment mechanism comprises a screw rod (22) and a connecting plate (23); the connecting plate (23) is slidably connected in the housing (1); the screw rod (22) and the connecting plate (23) are rotationally connected; the screw rod (22) and the housing (1) are threadedly connected; and one end of the tension spring (17) is mounted on the connecting plate (23).

9. The new type of rebar hooking mechanism capable of forward and reverse rotation according to claim 8 is characterized in that: The screw rod (22) is fixedly connected to a knocking block (24).

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