Wire tightening device for power construction
By designing an electric power construction tightening device in which a first ratchet cooperates with an adjacent first pawl, the problem of fixed minimum tightening distance of traditional tightening devices is solved, rapid tightening and precise control of the wires are achieved, and excessive tightening of the wires is avoided.
Patent Information
- Application Number
- CN202422118496.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-08-30
AI Technical Summary
The minimum tensioning distance of traditional tensioners is fixed, which makes the wires prone to over-tightening during the tensioning process, causing damage.
The first ratchet is used to cooperate with the adjacent first pawl to achieve rapid line tightening, and the second ratchet is used to cooperate with the other first pawl to achieve slow line tightening over a small distance. The minimum line tightening distance is adjusted by the clutch locking assembly. Combined with the different tooth pitch designs of the first and second ratchets, the line tightening efficiency and accuracy are improved.
It achieves rapid tightening of the wires, improves the tightening efficiency, reduces the minimum tightening distance, avoids excessive tightening of the wires, and improves the tightening accuracy.
Smart Images
Figure CN223378726U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electric power construction tools, in particular to an electric power construction line tightening device. Background Art
[0002] A wire tensioner is a device used to tighten the line. It can be used to tighten the conductor during overhead line construction. It mainly connects two lines through two hooks and a wire clamp. By reeling in the steel wire, the gap between the two hooks is reduced, thereby tightening the line. It is widely used in power maintenance occasions.
[0003] When using a traditional wire tensioner, by turning the handle, the pawl pushes the ratchet to rotate, thereby rotating the winding shaft and bringing the two hooks closer, thereby achieving the tightening of the wire. It can be seen that when the ratchet size is the same, the more ratchet teeth there are, the smaller the distance between the teeth, and the smaller the minimum tightening distance of the wire, which is suitable for more precise tightening. Conversely, the fewer ratchet teeth there are, the larger the distance between the teeth, and the larger the minimum tightening distance of the wire, which can quickly achieve the tightening of the wire. However, the number of ratchet teeth set on the traditional wire tensioner is the same, so that the minimum tightening distance of the traditional wire tensioner is fixed, which causes the wire to be over-tightened due to the excessive minimum tightening distance during the tightening process, causing damage to the wire.
[0004] Therefore, a power construction line tightening device that solves the above problems is needed. Utility Model Content
[0005] The utility model proposes a wire tightening device for electric power construction, which realizes rapid tightening of the wires through the cooperation of the first ratchet and the adjacent first pawl, thereby improving the tightening efficiency. At the same time, through the cooperation of the second ratchet and the other first pawl, the minimum tightening distance is reduced, the tightening accuracy of the wires is improved, and the occurrence of excessive tightening of the wires due to an excessively large minimum tightening distance is avoided.
[0006] The technical solution of the present utility model is achieved as follows:
[0007] An electric power construction tightening device includes a frame, on which a tightening shaft for winding a tightening rope is rotatably mounted, and a first ratchet and a second ratchet are fixedly mounted on the tightening shaft, wherein the tooth pitch of the first ratchet is greater than the tooth pitch of the second ratchet, and a hand-push tightening mechanism is provided on the frame, wherein the hand-push tightening mechanism includes two tightening arms hinged on the tightening shaft, and each of the tightening arms is provided with a clutch locking assembly, wherein one clutch locking assembly cooperates with the first ratchet for quick tightening, and the other clutch locking assembly cooperates with the second ratchet for slow tightening over a small distance.
[0008] The two cams are connected by a threaded hole to form a circle, and the two cams are connected by a threaded hole to form a circle. The two cams have a circle that is fixed on the cam face, and a circle that is fixed on the cam face. The cams have a circle that is fixed on the cam face, and a circle that is fixed on the cam face
[0009] As a preferred technical solution, the clamping shaft is arranged parallel to the tensioning shaft, and a number of limiting grooves are provided on the inner sides of the two clamping plates, each of the limiting grooves extends along the radial direction of the clamping shaft, and a number of protrusions are provided on the two side walls of each first pawl away from the end of the tensioning shaft, and each of the protrusions is adapted to the corresponding limiting groove.
[0010] As a preferred technical solution, a mounting shaft is fixedly installed on each of the tensioning arms, each of the mounting shafts is arranged parallel to the tensioning shaft, each of the rotating blocks is rotatably installed on the corresponding mounting shaft, the first reset element includes a first torsion spring, and a first torsion spring is arranged between each of the mounting shafts and the corresponding rotating block.
[0011] As a preferred technical solution, the two eccentric clamping blocks are arranged on both sides of the clamping shaft, and a connecting plate is fixedly installed on one side of the two eccentric clamping blocks away from the clamping plate.
[0012] As a preferred technical solution, a fixed shaft is fixedly installed on the frame, the two second pawls are hinged on the fixed shaft, the second reset element includes a second torsion spring, and a second torsion spring is provided between the two second pawls and the fixed shaft.
[0013] As a preferred technical solution, the free ends of the two tightening arms are fixedly connected together to form a tightening handle.
[0014] As a preferred technical solution, the tightening rope is arranged between the first ratchet and the second ratchet, one end of the tightening rope is fixedly mounted on the tensioning shaft, and the other end of the tightening rope is fixedly mounted on the frame. The frame also includes a connecting frame, the upper end of the connecting frame is hinged to a guide wheel, the tightening rope is wound around the guide wheel, and the lower end of the connecting frame and the upper end of the frame are respectively hinged to a hook.
[0015] By adopting the above technical solution, the beneficial effects of the utility model are:
[0016] Since the electric power construction tightening device includes a first ratchet and a second ratchet, when the electric wire needs to be tightened quickly during use of the device, the first pawl and the second pawl adjacent to the first ratchet are fitted on the first ratchet, and the first pawl and the second pawl adjacent to the second ratchet are separated from the second ratchet. The tightening handle is rotated, and the first pawl adjacent to the first ratchet pushes the first ratchet to rotate, and the tightening shaft quickly tightens the tightening rope. After completing the long-distance tightening, when a short-distance tightening is required, the first pawl and the second pawl adjacent to the first ratchet are separated from the first ratchet, and the first pawl adjacent to the second ratchet is separated from the first ratchet. The pawl and the second pawl fit into the second ratchet, and the tightening handle is rotated. The first pawl adjacent to the second ratchet pushes the second ratchet to rotate, and the tightening shaft slowly tightens the tightening rope. In the present utility model, since the tooth pitch of the first ratchet is greater than the tooth pitch of the second ratchet, the minimum tightening distance of the first ratchet is greater than the minimum tightening distance of the second ratchet. Therefore, when the first ratchet is used to tighten the wire, the wire can be quickly tightened, which improves the tightening efficiency. When the second ratchet is used to tighten the wire, the tightening accuracy of the wire is improved, and the occurrence of excessive tightening of the wire due to the excessive minimum tightening distance is avoided.
[0017] Since the power construction tensioning device includes a clutch locking assembly, when using this device, when the eccentric clamping block is manually rotated, the eccentric clamping block is pressed against the adjacent clamping plate and pushes the clamping plate to rotate in the direction of the first pawl, and the other clamping plate is limited by the limit block. Since the first pawl is arranged between the two clamping plates, the clamping of the first pawl is achieved. At the same time, with the cooperation of the limiting groove and the protrusion, the constraint of the first pawl is achieved. In the utility model, the constraint of the first pawl by the two clamping plates can realize the position locking of the first pawl after rotating with the clamping shaft as the axis, thereby realizing the separation and fit between the first pawl and the adjacent ratchet. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.
[0019] Figure 1 It is a structural diagram of the utility model;
[0020] Figure 2 for Figure 1 A in the middle is an enlarged structural diagram;
[0021] Figure 3 This is a reference diagram showing the state after the two clamping plates have released the constraints on the first pawl;
[0022] Figure 4 A reference diagram showing a state in which the first ratchet wheel is in contact with the adjacent first and second pawls;
[0023] Figure 5 This is a reference diagram of a state in which the second ratchet wheel is separated from the adjacent first pawl and second pawl.
[0024] Among them: 1. frame; 2. tightening rope; 3. tightening shaft; 4. first ratchet; 5. second ratchet; 6. tightening arm; 7. rotating block; 8. clamping plate; 9. mounting hole; 10. clamping shaft; 11. limiting block; 12. eccentric clamping block; 13. first pawl; 14. second pawl; 15. limiting groove; 16. protrusion; 17. mounting shaft; 18. first torsion spring; 19. connecting plate; 20. fixed shaft; 21. second torsion spring; 22. tightening handle; 23. connecting frame; 24. guide wheel; 25. hook; 26. top support surface. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0026] like Figure 1-Figure 5As shown in common, the power construction tensioning device includes a frame 1, on which a tensioning shaft 3 for winding a tensioning rope 2 is rotatably installed, and a first ratchet 4 and a second ratchet 5 are fixedly installed on the tensioning shaft 3. The tooth pitch of the first ratchet 4 is greater than the tooth pitch of the second ratchet 5. A hand-push tensioning mechanism is provided on the frame 1, and the hand-push tensioning mechanism includes two tensioning arms 6 hinged on the tensioning shaft 3, and each tensioning arm 6 is provided with a clutch locking assembly, wherein one clutch locking assembly cooperates with the first ratchet 4 for fast tensioning, and the other clutch locking assembly cooperates with the second ratchet 5 for slow tensioning over a small distance.
[0027] Each clutch locking assembly includes a rotating block 7 rotatably mounted on the corresponding tensioning arm 6, a first reset element is provided between the rotating block 7 and the corresponding tensioning arm 6, the free end of the rotating block 7 is hinged to two clamping plates 8, and each clamping plate 8 is provided with a mounting through hole 9, and a clamping shaft 10 is constrainedly installed in the two mounting through holes 9, one end of the clamping shaft 10 passes through one of the mounting through holes 9 and is fixedly installed with a limit block 11, the other end of the clamping shaft 10 passes through the other mounting through hole 9 and is hinged to two eccentrically set eccentric clamping blocks 12, a first pawl 13 is hinged on the clamping shaft 10, the first pawl 13 is constrainedly installed between the two clamping plates 8, the free ends of the two first pawls 13 are respectively adapted to the first ratchet 4 and the second ratchet 5, and two second pawls 14 are rotatably installed on the frame 1 for preventing the first ratchet 4 and the second ratchet 5 from reversing, and a second reset element is respectively provided between the two second pawls 14 and the frame 1.
[0028] Among them, the clamping shaft 10 is arranged parallel to the tensioning shaft 3, and a number of limiting grooves 15 are provided on the inner sides of the two clamping plates 8. Each limiting groove 15 extends along the radial direction of the clamping shaft 10. A number of protrusions 16 are provided on the two side walls of the end of each first pawl 13 away from the tensioning shaft 3, and each protrusion 16 is adapted to the corresponding limiting groove 15.
[0029] In addition, each tensioning arm 6 is fixedly mounted with a mounting shaft 17, each mounting shaft 17 is arranged parallel to the tensioning shaft 3, each rotating block 7 is rotatably mounted on the corresponding mounting shaft 17, the first reset element includes a first torsion spring 18, and a first torsion spring 18 is arranged between each mounting shaft 17 and the corresponding rotating block 7.
[0030] In addition, two eccentric clamping blocks 12 are arranged on both sides of the clamping shaft 10, and a connecting plate 19 is fixedly installed on the side of the two eccentric clamping blocks 12 away from the clamping plate 8. In the utility model, the setting of the connecting plate 19 realizes the synchronous rotation of the two eccentric clamping blocks 12, so that the adjacent clamping plates 8 are subjected to two thrusts at the same time, avoiding the skewing of the clamping plates 8.
[0031] Secondly, a fixed shaft 20 is fixedly mounted on the frame 1 , and the two second pawls 14 are hinged on the fixed shaft 20 . The second reset element includes a second torsion spring 21 , and a second torsion spring 21 is provided between the two second pawls 14 and the fixed shaft 20 .
[0032] The free ends of the two take-up arms 6 are fixedly connected together to form a take-up handle 22 .
[0033] The tightening rope 2 is arranged between the first ratchet 4 and the second ratchet 5. One end of the tightening rope 2 is fixedly mounted on the tensioning shaft 3, and the other end of the tightening rope 2 is fixedly mounted on the frame 1. The frame 1 also includes a connecting frame 23. The upper end of the connecting frame 23 is hinged with a guide wheel 24. The tightening rope 2 is wound around the guide wheel 24. The lower end of the connecting frame 23 and the upper end of the frame 1 are respectively hinged with a hook 25.
[0034] Each eccentric clamping block 12 is provided with a supporting surface 26. When the first pawl 13 is clamped by two clamping plates 8, the supporting surface 26 rests on the adjacent clamping plate 8. In the utility model, the setting of the supporting surface 26 makes the eccentric clamping block 12 and the adjacent clamping plate 8 in surface contact after the first pawl 13 is clamped, making the clamping of the first pawl 13 more stable.
[0035] The method of using the utility model is as follows:
[0036] The first step is to connect the hook 25 at the upper end of the device to the wire mounting frame, and to fix the hook 25 at the lower end of the device to the wire to be tightened through the wire clamp.
[0037] In the second step, the eccentric clamping block 12 is rotated so that the eccentric clamping block 12 is away from the adjacent clamping plate 8. Figure 3 As shown, at this time, the constraints of the two clamping plates 8 on the first pawl 13 are released. After the first pawl 13 is rotated to a suitable position, the eccentric clamping block 12 is rotated. The eccentric clamping block 12 pushes the adjacent clamping plate 8 to move toward the first pawl 13, and the other clamping plate 8 is limited by the limit block 11 until the two clamping plates 8 clamp the first pawl 13. At this time, the supporting surface 26 is against the adjacent clamping plate 8, and the position adjustment of the first pawl 13 is completed.
[0038] The third step, such as Figure 4 and Figure 5 As shown together, the first pawl 13 and the second pawl 14 adjacent to the first ratchet 4 are attached to the first ratchet 4, and the first pawl 13 and the second pawl 14 adjacent to the second ratchet 5 are away from the second ratchet 5. At this time, the device is in a fast tightening state. By rotating the tightening handle 22, the first pawl 13 adjacent to the first ratchet 4 pushes the first ratchet 4 to rotate, and the tightening shaft 3 quickly tightens the tightening rope 2, thereby achieving rapid tightening of the wire.
[0039] The fourth step is to complete the large-distance tightening, move the first pawl 13 and the second pawl 14 adjacent to the first ratchet 4 away from the first ratchet 4, and fit the first pawl 13 and the second pawl 14 adjacent to the second ratchet 5 onto the second ratchet 5. At this time, the device is in a small-distance slow tightening state. By rotating the tightening handle 22, the first pawl 13 adjacent to the second ratchet 5 pushes the second ratchet 5 to rotate slowly, and the tightening shaft 3 slowly tightens the tightening rope 2, thereby realizing the slow tightening of the wire.
[0040] Step 5: After the wires are tightened, secure them to the wire mounting bracket and remove the device.
[0041] In summary, the utility model realizes rapid tightening of the wires through the cooperation between the first ratchet and the adjacent first pawl, thereby improving the tightening efficiency. At the same time, through the cooperation between the second ratchet and the other first pawl, the minimum tightening distance is reduced, the tightening accuracy of the wires is improved, and the occurrence of excessive tightening of the wires due to an excessively large minimum tightening distance is avoided.
[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. An electric power construction tightening device, comprising a frame, characterized in that: A tightening shaft for winding a tightening rope is rotatably mounted on the frame, a first ratchet and a second ratchet are fixedly mounted on the tightening shaft, the tooth pitch of the first ratchet being greater than the tooth pitch of the second ratchet, a hand-pushing tightening mechanism is provided on the frame, the hand-pushing tightening mechanism comprises two tightening arms hinged on the tightening shaft, each of the tightening arms is provided with a clutch locking assembly, wherein one clutch locking assembly cooperates with the first ratchet for fast tightening, and the other clutch locking assembly cooperates with the second ratchet for slow tightening over a small distance; The two cams are connected by a threaded hole to form a circle, and the two cams are connected by a threaded hole to form a circle. The two cams have a circle that is fixed on the cam face, and a circle that is fixed on the cam face. The cams have a circle that is fixed on the cam face, and a circle that is fixed on the cam face 2. The power construction tightening device according to claim 1, characterized in that: The clamping shaft is arranged parallel to the tensioning shaft, and a plurality of limiting grooves are provided on the inner sides of the two clamping plates, each of the limiting grooves extends along the radial direction of the clamping shaft, and a plurality of protrusions are provided on the two side walls of the end of each first pawl away from the tensioning shaft, and each of the protrusions is adapted to the corresponding limiting groove.
3. The power construction tightening device according to claim 1, characterized in that: A mounting shaft is fixedly mounted on each of the tensioning arms, each of the mounting shafts is arranged parallel to the tensioning shaft, each of the rotating blocks is rotatably mounted on the corresponding mounting shaft, the first reset element includes a first torsion spring, and a first torsion spring is arranged between each of the mounting shafts and the corresponding rotating block.
4. The power construction tightening device according to claim 1, characterized in that: The two eccentric clamping blocks are arranged on both sides of the clamping shaft, and a connecting plate is fixedly installed on one side of the two eccentric clamping blocks away from the clamping plate.
5. The power construction tightening device according to claim 1, characterized in that: A fixed shaft is fixedly mounted on the frame, the two second pawls are hinged on the fixed shaft, the second reset element includes a second torsion spring, and a second torsion spring is provided between the two second pawls and the fixed shaft.
6. The power construction line tightening device according to claim 1, characterized in that: The free ends of the two tightening arms are fixedly connected together to form a tightening handle.
7. The power construction tightening device according to claim 1, characterized in that: The tightening rope is arranged between the first ratchet and the second ratchet, one end of the tightening rope is fixedly mounted on the tensioning shaft, and the other end of the tightening rope is fixedly mounted on the frame. The frame also includes a connecting frame, the upper end of the connecting frame is hinged with a guide wheel, the tightening rope is wound around the guide wheel, and the lower end of the connecting frame and the upper end of the frame are respectively hinged with a hook.