Rigging tensioner

Abstract

The present application relates to the technical field of rope fixing device, and particularly relates to a rope device tensioning device, a base assembly, including a rotating shaft and two oppositely arranged mounting plates, the rotating shaft is rotatably connected with the mounting plate; a ratchet assembly, including a ratchet, a driving claw, a locking claw and a driving rod; the locking claw is slidably connected with the mounting plate, the locking claw has a locking state abutting against the ratchet and an unlocking state not abutting against the ratchet; the driving rod is provided with a first unlocking protrusion on the side close to the locking claw, and the first unlocking protrusion is used for driving the locking claw to be converted from the locking state to the unlocking state. Since there is strong pressure between the ratchet and the locking claw when the locking claw works, the locking claw is difficult to slide, the first unlocking protrusion is used for driving the locking claw to be converted from the locking state to the unlocking state, the unlocking difficulty of the locking claw is greatly reduced, and the use convenience of the rope device tensioning device is improved.

Description

Technical Field

[0001] This invention relates to the field of rope fixing equipment technology, and in particular to a rope tensioning device. Background Technology

[0002] Ratchet tensioners are commonly used to secure goods to prevent them from shifting or falling during transport.

[0003] CN208084252U discloses a wire rope tensioner, relating to the field of tensioner technology. The key technical points of the solution include a support base, a ratchet shaft rotatably connected to one end of the support base, and a tensioning ratchet fixedly connected to both ends of the ratchet shaft. The support base includes two opposing clamping plates located outside the tensioning ratchet, with one end of each clamping plate integrally formed. The integrally formed ends of the clamping plates and the ratchet shaft are respectively provided with a rope fixing hole and a rope movable end fixing hole. It also includes a stop rod that cooperates with the tensioning ratchet. A through hole is provided on the side wall of the support base, and a rotating shaft rotatably connected to the through hole is disposed within the through hole. A reinforcing plate is fixedly connected between the rotating shaft and the stop rod. A pressing rod is provided on the support base. This invention solves the problem that the tensioner is prone to bending or breaking and has poor tensioning effect when the tension force is large. By using a reinforcing plate and a rotating shaft to increase the strength of the stop rod, bending or breaking of the stop rod can be prevented, resulting in a better tensioning effect.

[0004] In the existing technology, when the ratchet tensioner provides tension, there is a large pressure between the ratchet and the anti-reverse element. When releasing the tension, a large pulling force needs to be applied to the anti-reverse element, which makes operation difficult. Summary of the Invention

[0005] In existing technologies, when a ratchet tensioner provides tension, there is significant pressure between the ratchet and the stop mechanism. When releasing the tension, a large pulling force needs to be applied to the stop mechanism to release the ratchet, resulting in operational difficulties with existing ratchet tensioners.

[0006] In view of this, the present invention provides a rope tensioning device, comprising:

[0007] A base assembly, the base assembly including a rotating shaft and two opposing mounting plates, the rotating shaft being rotatably connected to the mounting plates;

[0008] A ratchet assembly, comprising a ratchet, a drive pawl, a locking pawl, and a drive rod, wherein the ratchet is fixed to one end of the rotating shaft, the drive rod is rotatably connected to the rotating shaft, and the drive pawl is slidably connected to the drive rod;

[0009] The locking pawl is slidably connected to the mounting plate, and the locking pawl has a locked state that abuts against the ratchet and an unlocked state that does not abut against the ratchet;

[0010] The drive rod is provided with a first unlocking protrusion on the side near the locking claw. The first unlocking protrusion is used to drive the locking claw to switch from the locked state to the unlocked state.

[0011] Preferably, the end of the first unlocking protrusion away from the rotating shaft is configured as an unlocking end face, and the end of the unlocking end face away from the drive rod is inclined toward the rotating shaft.

[0012] Preferably, the mounting plate has a first sliding groove, the locking pawl is slidably connected to the first sliding groove, the mounting plate is connected to the locking pawl by a spring, and the spring compresses the locking pawl, thereby putting the locking pawl in a locked state abutting against the ratchet.

[0013] Preferably, the drive rod has a second sliding groove, the drive pawl is slidably connected to the second sliding groove, the drive rod is connected to the drive pawl by a spring, and the spring compresses the drive pawl, thereby placing the drive pawl in an unlocked state that abuts against the ratchet.

[0014] Preferably, the driving pawl has a driving state that abuts against the ratchet and an unlocked state that does not abut against the ratchet; when the first unlocking protrusion drives the locking pawl to switch from the locked state to the unlocked state, the driving pawl is in the unlocked state that does not abut against the ratchet.

[0015] Preferably, the mounting plate is provided with a second unlocking protrusion, which is located adjacent to the locking pawl. The distance between the outer edge of the second unlocking protrusion and the axis of the rotating shaft is greater than the radius of the circumscribed circle of the ratchet. The second unlocking protrusion is used to drive the driving pawl from a driving state that abuts against the ratchet to an unlocking state that does not abut against the ratchet.

[0016] Preferably, the second unlocking protrusion has a first side away from the locking claw, and the outer edge of the first side is arc-shaped; and / or

[0017] The second unlocking protrusion has a second side near the driving claw, and a fixing groove is formed between the second side and the driving claw; and / or

[0018] The second unlocking protrusion has a second side near the driving claw, and a fixing groove is formed between the second side and the driving claw, with a smooth transition between the second side and the fixing groove; and / or

[0019] When the locking claw is in the unlocked state, the driving claw is also in the unlocked state.

[0020] Preferably, the drive rod is disposed between the mounting plate and the ratchet; and / or

[0021] The rotating shaft includes two symmetrically arranged D-shaped shafts. The ratchet has two D-shaped holes that match the D-shaped shafts. The two D-shaped holes are symmetrically arranged along the axis of the ratchet. The D-shaped shafts are installed in conjunction with the D-shaped holes.

[0022] Preferably, the rope tensioning device further includes a recovery assembly, which includes a torsion spring and a torsion spring mounting base. The torsion spring mounting base is fixedly connected to the mounting plate, one end of the torsion spring is connected to the rotating shaft, and the other end is fixed.

[0023] Preferably, the ratchet assembly comprises two ratchet assemblies, which are respectively disposed at both ends of the rotating shaft.

[0024] Compared to existing technologies, the rope tensioning device provided by this invention, by setting a first unlocking protrusion on the drive rod, causes the first unlocking protrusion to press against the locking pawl when the drive rod rotates in the direction of the locking pawl, thereby driving the locking pawl to slide along the mounting plate and thus driving the locking pawl to switch from a locked state to an unlocked state. Since there is strong pressure between the ratchet and the locking pawl when the locking pawl is working, the locking pawl is difficult to slide. By using the first unlocking protrusion to drive the locking pawl from the locked state to the unlocked state, the unlocking difficulty of the locking pawl is greatly reduced, and the ease of use of the rope tensioning device is improved.

[0025] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0026] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0027] Figure 1 This is a schematic diagram of the rope tensioning device according to one embodiment of the present invention;

[0028] Figure 2 This is a left view of a rope tensioning device according to one embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the structure of a mounting plate according to one embodiment of the present invention;

[0030] Figure 4 for Figure 2 Front view of the mounting plate;

[0031] Figure 5 This is a schematic diagram of the structure of a mounting plate according to one embodiment of the present invention;

[0032] Figure 6This is a schematic diagram of the structure of a drive rod according to one embodiment of the present invention;

[0033] Figure 7 for Figure 6 Front view of the drive lever.

[0034] Explanation of reference numerals in the attached figures: Detailed Implementation

[0035] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0036] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0037] It should be noted that the terms "first," "second," "third," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of the invention described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0038] In view of this, the present invention provides a rope tensioning device, such as... Figures 1 to 7 As shown, it includes:

[0039] The base assembly 1 includes a rotating shaft 11 and two oppositely arranged mounting plates 12. The rotating shaft 11 is rotatably connected to the mounting plates 12. Specifically, the two mounting plates 12 are connected to each other in a U-shape, and the two ends of the rotating shaft 11 are rotatably connected to one of the mounting plates 12 respectively.

[0040] Ratchet assembly 2 includes a ratchet 21, a drive pawl 22, a locking pawl 23, and a drive rod 24. The ratchet 21 is fixed to one end of the rotating shaft 11 and drives the rotating shaft 11 to rotate synchronously. The drive rod 24 is rotatably connected to the rotating shaft 11, and the drive pawl 22 is slidably connected to the drive rod 24. The drive pawl 22 can have two states: engaged with the ratchet teeth and not engaged with the ratchet teeth, through sliding. When the drive pawl 22 is engaged with the ratchet teeth, the drive rod 24 swings along the circumference of the rotating shaft 11, and the drive rod 24 drives the ratchet 21 to rotate in the forward direction through the drive pawl 22.

[0041] The locking pawl 23 is slidably connected to the mounting plate 12. The locking pawl 23 has a locked state that abuts against the ratchet 21 and an unlocked state that does not abut against the ratchet 21. Specifically, the locking pawl 23 can slide approximately along the radial direction of the rotation axis 11. When the locking pawl 23 abuts against the ratchet tooth, the locking pawl 23 restricts the ratchet 21 from rotating in the opposite direction. When the locking pawl 23 does not abut against the ratchet tooth, the locking pawl 23 allows the ratchet 21 to rotate in the opposite direction.

[0042] like Figure 6 As shown, a first unlocking protrusion 241 is provided on the side of the drive rod 24 near the locking pawl 23. The first unlocking protrusion 241 is used to drive the locking pawl 23 from the locked state to the unlocked state. Preferably, the first unlocking protrusion 241 drives the locking pawl 23 to move away from the rotation axis 11, thereby driving the locking pawl 23 from the locked state to the unlocked state.

[0043] Compared to existing technologies, the rope tensioning device provided by this invention, by setting a first unlocking protrusion 241 on the drive rod 24, causes the first unlocking protrusion 241 to press against the locking pawl 23 when the drive rod 24 rotates in the direction of the locking pawl 23, thereby driving the locking pawl 23 to slide along the mounting plate 12, and then driving the locking pawl 23 to switch from the locked state to the unlocked state. Since there is strong pressure between the ratchet and the locking pawl 23 when the locking pawl 23 is working, the locking pawl 23 is difficult to slide. By using the first unlocking protrusion 241 to drive the locking pawl 23 from the locked state to the unlocked state, the unlocking difficulty of the locking pawl 23 is greatly reduced, and the ease of use of the rope tensioning device is improved.

[0044] According to one embodiment of the present invention, such as Figure 7As shown, the end of the first unlocking protrusion 241 away from the rotation shaft 11 is configured as an unlocking end face, and the end of the unlocking end face away from the drive rod 24 is inclined towards the rotation shaft 11. This configuration causes the unlocking end face to press against the locking claw 23 as the first unlocking protrusion 241 approaches the locking claw 23, driving the locking claw 23 to move away from the rotation shaft 11.

[0045] According to one embodiment of the present invention, the mounting plate 12 is provided with a first sliding groove 121, the locking pawl 23 is slidably connected to the first sliding groove 121, the mounting plate 12 is connected to the locking pawl 23 by a spring, the spring compresses the locking pawl 23, thereby causing the locking pawl 23 to be in a locked state abutting against the ratchet 21.

[0046] According to one embodiment of the present invention, the drive rod 24 is provided with a second sliding groove 242, the drive pawl 22 is slidably connected to the second sliding groove 242, the drive rod 24 is connected to the drive pawl 22 by a spring, the spring compresses the drive pawl 22, thereby causing the drive pawl 22 to be in an unlocked state abutting against the ratchet 21.

[0047] According to one embodiment of the present invention, the driving pawl 22 has a driving state that abuts against the ratchet 21 and an unlocked state that does not abut against the ratchet 21; when the first unlocking protrusion 241 drives the locking pawl 23 to switch from the locked state to the unlocked state, the driving pawl 22 is in the unlocked state that does not abut against the ratchet 21. At this time, the rotating shaft 11 can rotate freely.

[0048] In the above, such as Figure 3 As shown, a second unlocking protrusion 122 is provided on the mounting plate 12. The second unlocking protrusion 122 is disposed adjacent to the locking pawl 23. The distance between the outer edge of the second unlocking protrusion 122 and the axis of the rotation shaft 11 is greater than the radius of the circumscribed circle of the ratchet 21. The second unlocking protrusion 122 is used to drive the driving pawl 22 from a driving state abutting against the ratchet 21 to an unlocked state not abutting against the ratchet 21. The second unlocking protrusion 122 drives the driving pawl 22 to move away from the rotation shaft 11, thereby driving the driving pawl 22 to switch from a locked state to an unlocked state.

[0049] Furthermore, according to one embodiment of the present invention, such as Figure 4As shown, the second unlocking protrusion 122 has a first side 1221 away from the locking claw 23, and the outer edge of the first side 1221 is arc-shaped; this configuration allows the second unlocking protrusion 122 to slowly and smoothly drive the driving claw 22 to slide, so that the operator can unlock the driving claw 22 by applying a small force.

[0050] According to one embodiment of the present invention, such as Figure 4 As shown, the second unlocking protrusion 122 has a second side 1222 near the drive pawl 22, and a fixing groove 123 is formed between the second side 1222 and the drive pawl 22; the distance between the bottom of the fixing groove 123 and the axis of the rotating shaft 11 is greater than the radius of the outer tangent circle of the ratchet 21; by setting the fixing groove 123, the drive pawl 22 can abut against the fixing groove 123, thereby preventing the drive rod 24 from swinging;

[0051] According to one embodiment of the present invention, such as Figure 5 As shown, the second unlocking protrusion 122 has a second side 1222 near the drive claw 22, and a fixing groove 123 is formed between the second side 1222 and the drive claw 22. The second side 1222 and the fixing groove 123 are smoothly transitioned. The distance between the bottom of the fixing groove 123 and the axis of the rotating shaft 11 is greater than the radius of the circumscribed circle of the ratchet 21. This arrangement allows the operator to move the drive rod 24 towards the first side 1221 when the operator wants the drive rod 24 to swing freely. The second side 1222 can slowly and smoothly drive the drive claw 22 to slide. During this process, the operator does not need to manually remove the drive claw 22 from the fixing groove 123, thereby increasing the ease of use of the rope tensioning device.

[0052] According to one embodiment of the present invention, when the locking claw 23 is in the unlocked state, the driving claw 22 is also in the unlocked state. This arrangement allows the rotating shaft 11 to rotate freely in both directions.

[0053] To avoid friction between the drive rod 24 and the rope, such as Figure 2 As shown, the drive rod 24 is disposed between the mounting plate 12 and the ratchet 21;

[0054] To enable the rope tensioning device to provide greater tensile force, according to one embodiment of the present invention, the rotating shaft 11 includes two symmetrically arranged D-shaped shafts. The ratchet 21 has two D-shaped holes that mate with the D-shaped shafts. The two D-shaped holes are symmetrically arranged along the axis of the ratchet 21, and the D-shaped shafts are fitted into the D-shaped holes. On one hand, due to the D-shaped holes, the ratchet 21 and the rotating shaft 11 can withstand a larger shear force, thus preventing relative rotation between them. On the other hand, one end of the rope is fixedly connected to one of the D-shaped shafts, preventing slippage between the rope and the D-shaped shafts when the rope is wound around the outer circumference of both shafts. However, when the rotating shaft 11 is a round shaft, slippage between the rope and the rotating shaft 11 is likely to occur. Therefore, the rope tensioning device of the present invention can provide greater tensile force.

[0055] To enable automatic rope retrieval after the rope is stretched, the rope tensioning device further includes a retrieval component 3. The retrieval component 3 includes a torsion spring and a torsion spring mounting base 31. The torsion spring mounting base 31 is fixedly connected to the mounting plate 12. One end of the torsion spring is connected to the rotating shaft 11, and the other end is fixed. When the rope is stretched, the rope drives the rotating shaft 11 to rotate. Simultaneously, the rotating shaft 11 drives the torsion spring to rotate, storing tension. When the tension in the rope is released, the torsion spring drives the rotating shaft 11 to rotate, thereby achieving rope retrieval.

[0056] In order to enable the rope tensioning device to provide greater tension, according to one embodiment of the present invention, the ratchet assembly 2 includes two ratchet assemblies 2, which are respectively disposed at both ends of the rotating shaft 11. At this time, the driving pawl 22 and the locking pawl 23 are plate-shaped, and the plate-shaped driving pawl 22 and the plate-shaped locking pawl 23 can simultaneously engage with the two ratchet 21.

[0057] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, because according to the present invention, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0058] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0059] In the several embodiments provided by this invention, it should be understood that the disclosed apparatus can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical or other forms.

[0060] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A rope tensioning device, characterized in that, include: The base assembly (1) includes a rotating shaft (11) and two oppositely arranged mounting plates (12), wherein the rotating shaft (11) and the mounting plates (12) are rotatably connected; The ratchet assembly (2) includes a ratchet (21), a drive pawl (22), a locking pawl (23), and a drive rod (24). The ratchet (21) is fixed to one end of the rotating shaft (11), the drive rod (24) is rotatably connected to the rotating shaft (11), and the drive pawl (22) is slidably connected to the drive rod (24). The locking claw (23) is slidably connected to the mounting plate (12), and the locking claw (23) has a locked state that abuts against the ratchet (21) and an unlocked state that does not abut against the ratchet (21); The drive rod (24) is provided with a first unlocking protrusion on the side near the locking claw (23), and the first unlocking protrusion is used to drive the locking claw (23) to switch from the locked state to the unlocked state.

2. The rope tensioning device according to claim 1, characterized in that, The end of the first unlocking protrusion away from the rotating shaft (11) is set as the unlocking end face, and the end of the unlocking end face away from the drive rod (24) is inclined towards the rotating shaft (11).

3. The rope tensioning device according to claim 1, characterized in that, The mounting plate (12) has a first sliding groove (121), and the locking pawl (23) is slidably connected to the first sliding groove (121). The mounting plate (12) is connected to the locking pawl (23) by a spring. The spring presses the locking pawl (23), thereby putting the locking pawl (23) in a locked state that abuts against the ratchet (21).

4. The rope tensioning device according to claim 1, characterized in that, The drive rod (24) has a second slide groove (242), the drive pawl (22) is slidably connected to the second slide groove (242), the drive rod (24) is connected to the drive pawl (22) by a spring, the spring squeezes the drive pawl (22), thereby making the drive pawl (22) in an unlocked state that abuts against the ratchet (21).

5. The rope tensioning device according to claim 1, characterized in that, The drive pawl (22) has a drive state that abuts against the ratchet (21) and an unlock state that does not abut against the ratchet (21); when the first unlocking protrusion drives the locking pawl (23) to switch from the locked state to the unlocked state, the drive pawl (22) is in the unlocked state that does not abut against the ratchet (21).

6. The rope tensioning device according to claim 5, characterized in that, The mounting plate (12) is provided with a second unlocking protrusion (122), which is located close to the locking claw (23). The distance between the outer edge of the second unlocking protrusion (122) and the axis of the rotating shaft (11) is greater than the radius of the outer tangent circle of the ratchet (21). The second unlocking protrusion (122) is used to drive the driving claw (22) from the driving state of abutting against the ratchet (21) to the unlocking state of not abutting against the ratchet (21).

7. The rope tensioning device according to claim 6, characterized in that, The second unlocking protrusion (122) has a first side (1221) away from the locking claw (23), and the outer edge of the first side (1221) is arc-shaped; and / or The second unlocking protrusion (122) has a second side (1222) near the locking claw (23), and a retaining groove (123) is formed between the second side (1222) and the locking claw (23); and / or The second unlocking protrusion (122) has a second side (1222) near the locking claw (23), and a fixing groove (123) is formed between the second side (1222) and the locking claw (23), with a smooth transition between the second side (1222) and the fixing groove (123); and / or When the locking claw (23) is in the unlocked state, the driving claw (22) is also in the unlocked state.

8. The rope tensioning device according to claim 1, characterized in that, The drive rod (24) is disposed between the mounting plate (12) and the ratchet (21); and / or The rotating shaft (11) includes two symmetrically arranged D-shaped shafts. The ratchet (21) has two D-shaped holes that match the D-shaped shafts. The two D-shaped holes are symmetrically arranged along the axis of the ratchet (21). The D-shaped shafts are installed in conjunction with the D-shaped holes.

9. The rope tensioning device according to claim 1, characterized in that, The rope tensioning device further includes a recovery component (3), which includes a torsion spring and a torsion spring mounting base (31). The torsion spring mounting base (31) is fixedly connected to the mounting plate (12). One end of the torsion spring is connected to the rotating shaft (11), and the other end is fixed.

10. The rope tensioning device according to claim 1, characterized in that, The ratchet assembly (2) includes two ratchet assemblies (2), which are respectively disposed at both ends of the rotating shaft (11).

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