Tensioning machine

Abstract

The invention relates to a tensioning machine which comprises a support, a tensioning device and a tensioning device. The belt shaft is rotatably mounted on the bracket, penetrates through the accommodating space and is used for winding and rolling the binding belt; the volute spring is arranged on the belt shaft and used for enabling the belt shaft to have the tendency of rotating in the bundling belt winding direction; the speed reduction assembly is arranged on the belt shaft and used for acting on the belt shaft to reduce the rotating speed of the belt shaft when the belt shaft rotates in the bundling belt winding direction; the blocking assembly is arranged on the support and used for selectively locking or releasing rotation of the belt shaft. According to the tensioning machine, on the premise that the compact structure is guaranteed, the volute spring and the speed reduction assembly are arranged at the two ends of the belt shaft respectively, the overall layout is more reasonable, mutual interference between components is effectively reduced, and the structural complexity is remarkably reduced.

Description

Technical Field

[0001] The present application relates to the technical field of tensioners, and in particular to a tensioning machine. Background Art

[0002] Most of the tensioning machines on the market currently do not have the function of automatically recovering the binding belts. After unloading the goods, the operators have to spend time to sort out the binding belts, which increases the operating burden and working time. For those tensioning machines with the function of collecting the belts, there are often the following technical problems: on the one hand, the existing collecting device cannot effectively control the recovery speed when recovering the binding belts, which easily leads to the binding belts being recovered too quickly, and the collecting process cannot be stopped at will, causing the metal hook at the front end of the binding belt to suddenly rebound, posing a safety hazard and even causing personal injury; on the other hand, the structure of the existing collecting mechanism is often too complicated, inconvenient to use, and increases the difficulty of operation and maintenance costs.

[0003] Although some existing solutions attempt to solve the problem of strapping belt recycling by adding a recycling mechanism, they usually only consider the realization of the belt-collecting function and ignore the layout design of the recycling mechanism itself, directly mixing the power elements and deceleration elements, which not only increases the complexity of the structure, but also affects the overall operating efficiency and safety. Summary of the invention

[0004] In order to solve the above problems, the present application provides a tensioning machine with a more reasonable overall layout.

[0005] In order to achieve the above purpose, the tensioning machine designed in this application includes:

[0006] A bracket having a receiving space for receiving the binding belt;

[0007] A belt shaft is rotatably mounted on the bracket and passes through the receiving space, and is used to wind and reel in the binding belt; a spiral spring is provided on the belt shaft, and is used to make the belt shaft have a tendency to rotate in the direction of reeling in the binding belt;

[0008] A deceleration assembly, disposed on the belt shaft, for acting on the belt shaft to reduce the rotation speed of the belt shaft when the belt shaft rotates in the direction of winding the binding belt;

[0009] A blocking assembly, provided on the bracket, for selectively locking or releasing the rotation of the belt shaft;

[0010] The belt shaft has a first end exposed outside the bracket and a second end arranged opposite to the first end, the spiral spring is arranged at the first end of the belt shaft, and the deceleration assembly is arranged at the second end of the belt shaft.

[0011] Further, the deceleration assembly is configured to act on the belt shaft in a frictional manner.

[0012] Furthermore, the deceleration assembly includes a mounting shaft, a deceleration plate, and a first torsion spring sleeved on the mounting shaft and acting on the deceleration plate, the deceleration plate is pivotally connected to the mounting shaft and has a first position; in the first position, the deceleration plate rests on the outer peripheral surface of the second end of the belt shaft under the action of the first torsion spring.

[0013] Furthermore, the deceleration plate is provided with two ears which are arranged opposite to each other, and the two ears are sleeved on the mounting shaft at an interval; and the first torsion spring is located between the two ears.

[0014] Furthermore, the second end of the belt shaft is provided with knurling for increasing friction; or, the second end of the belt shaft is provided with a gear, and the tooth tip of the gear is in contact with the plate surface of the deceleration plate on the side away from the first torsion spring.

[0015] Furthermore, the deceleration plate has a second position which does not act on the belt shaft, and an operating handle is provided on the deceleration plate, and the operating handle is configured to drive the deceleration plate to switch from the first position to the second position.

[0016] Furthermore, a clearance hole is opened on the side wall of the bracket, and the speed reducer has a first pressing portion extending through the clearance hole to the receiving space; and an operating window exposing the first pressing portion and the receiving space is provided on the top of the bracket.

[0017] Furthermore, it also includes a protective shell, which is fixedly mounted on the side wall of the bracket and covers the deceleration assembly; one end of the first torsion spring abuts against the upper plate surface of the deceleration plate, and the other end abuts against the inner wall of the protective shell.

[0018] Furthermore, the blocking component comprises:

[0019] A take-up reel with ratchets at both ends is rotatably mounted on the belt shaft;

[0020] A handle with an eccentric wheel, wherein the handle is rotatably mounted on the belt shaft through the eccentric wheel;

[0021] A first check plate, provided on the bracket, acts on the ratchet wheel through a compression spring, and is used to prevent the take-up reel from rotating in a direction opposite to the direction of winding the binding belt;

[0022] A second check plate, provided on the handle, acts on the ratchet wheel through a second torsion spring, and is used to prevent the take-up reel from rotating in a direction opposite to the direction of winding the binding belt;

[0023] Among them, the handle is configured to drive the eccentric wheel to rotate in the direction of winding the binding belt under the action of external force, so as to drive the first check plate to switch from a position acting on the ratchet to a position not acting on the ratchet; a second pressing portion is provided on the second check plate, and the second pressing portion is used to control the second check plate to switch from a position acting on the ratchet to a position not acting on the ratchet.

[0024] Furthermore, the second check plate has a limiting protrusion protruding from the bracket, and a guide groove for limiting the moving range of the limiting protrusion is provided on the side wall of the bracket.

[0025] The tensioning machine designed in the present application places the volute spring and the deceleration assembly at both ends of the belt shaft while ensuring a compact structure, which not only makes the overall layout more reasonable, but also effectively reduces the mutual interference between components and significantly reduces the complexity of the structure. Specifically, the volute spring provides the belt shaft with a rotational driving force in the direction of winding the binding belt, thereby realizing the automatic recovery function of the binding belt and effectively eliminating the tedious operation of manual sorting. At the same time, the deceleration assembly acts on the belt shaft in the form of friction, which can effectively reduce the rotation speed of the belt shaft, avoids the safety hazards caused by too fast webbing recovery, and improves the reliability and service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the tensioning machine provided in an embodiment of the present application.

[0027] Figure 2 It is a schematic diagram of the structure of the deceleration assembly provided in an embodiment of the present application.

[0028] Figure 3 yes Figure 1 Exploded three-dimensional diagram.

[0029] Figure 4 yes Figure 1 Top view of the .

[0030] Figure 5 yes Figure 4 Sectional view at AA.

[0031] Among them: bracket 10, give way hole 11, guide groove 12, belt shaft 20, gear 21, spiral spring 30, deceleration assembly 40, mounting shaft 41, deceleration plate 42, ear 421, operating handle 422, first pressing portion 423, first torsion spring 43, protective shell 44, blocking assembly 50, ratchet 51, take-up reel 52, eccentric wheel 53, handle 54, first check plate 55, compression spring 56, second check plate 57, second pressing portion 571, limiting protrusion 572, second torsion spring 58, operating window 60. DETAILED DESCRIPTION

[0032] The preferred embodiments of the present application are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present application and are not used to limit the present application.

[0033] like Figures 1 to 5 As shown, the tensioning machine described in this embodiment mainly includes a bracket 10, a belt shaft 20, a spiral spring 30, a deceleration assembly 40 and a blocking assembly 50. These components realize the automatic recovery, speed control and selective locking functions of the binding belt through structural design and coordinated operation.

[0034] The bracket 10 has a receiving space for receiving the binding belt. In the specific implementation, the bracket 10 is preferably made of high-strength steel through a stamping process to form a Figure 3 The U-shaped structure shown, with its side panels on both sides providing a basis for the installation of the remaining components, not only ensures the strength and rigidity of the overall structure, but also forms an internal space suitable for accommodating the binding belts, facilitating the orderly storage of the binding belts.

[0035] The belt shaft 20 is rotatably mounted on the bracket 10 and passes through the receiving space, and is used to wind and reel the binding belt. The belt shaft 20 is cylindrical in design, and a non-slip pattern may be provided on the surface to increase the friction between the binding belt and the binding belt, so as to ensure that the binding belt will not loosen or slide during the reeling process. When the belt shaft 20 rotates in a predetermined direction, the binding belt can be wound and reeled smoothly.

[0036] The spiral spring 30 is arranged on the belt shaft 20, and is used to make the belt shaft 20 have a tendency to rotate in the direction of winding the binding belt. The spiral spring 30 is preloaded with a certain torque when installed, so as to give the belt shaft 20 a continuous tendency to rotate in the direction of winding the binding belt. After the external force is released, the spiral spring 30 can automatically drive the belt shaft 20 to rotate, realizing the automatic recovery of the binding belt without manual intervention.

[0037] The deceleration component 40 is disposed on the belt shaft 20, and is used to act on the belt shaft 20 to reduce the rotation speed of the belt shaft 20 when the belt shaft 20 rotates in the direction of winding the binding belt. In this embodiment, the deceleration component 40 acts on the belt shaft 20 in the form of friction to produce an appropriate damping effect. This design effectively avoids the impact, noise and potential safety hazards that may be generated by the rapid winding of the binding belt, making the entire winding process more stable and controllable.

[0038] The blocking assembly 50 is provided on the bracket 10, and is used to selectively lock or release the rotation of the belt shaft 20. By operating the blocking assembly 50, the user can control the start and stop of the winding process at any time according to actual needs, further improving the flexibility and safety of the operation. The detailed structure and working principle of the blocking assembly 50 will be described in detail later in this embodiment.

[0039] The belt shaft 20 has a first end exposed outside the bracket 10 and a second end arranged opposite to the first end, the spiral spring 30 is arranged at the first end of the belt shaft 20, and the deceleration assembly 40 is arranged at the second end of the belt shaft 20. This structural design of arranging the winding power source (volute spring 30) and the resistance control mechanism (deceleration assembly 40) at both ends of the belt shaft 20 respectively significantly optimizes the overall structural layout: by separating the components that generate the rotation trend and the components that control the rotation speed, the mutual interference between the two is effectively avoided, so that their respective functions can be more purely realized, thereby improving the overall stability and reliability of the system. At the same time, this layout also facilitates the installation, inspection and maintenance of each component, and prolongs the service life of the equipment.

[0040] In some embodiments, Figure 2 , Figure 3 As shown, the deceleration assembly 40 includes a mounting shaft 41, a deceleration plate 42, and a first torsion spring 43 sleeved on the mounting shaft 41 and acting on the deceleration plate 42. The deceleration plate 42 is pivoted to the mounting shaft 41 and has a first position; in the first position, the deceleration plate 42 abuts against the outer peripheral surface of the second end of the belt shaft 20 under the action of the first torsion spring 43. When the belt shaft 20 rotates in the direction of winding the binding belt under the drive of the spiral spring 30, the deceleration plate 42 in the first position is acted upon by the force of the first torsion spring 43, and a friction force is generated between the deceleration plate 42 and the outer peripheral surface of the second end of the belt shaft 20, thereby effectively hindering the rapid rotation of the belt shaft 20, achieving the purpose of reducing the rotation speed, so that the binding belt can be wound smoothly, and avoiding the potential safety hazards caused by rapid rebound. In order to improve the friction effect, the contact surface between the deceleration plate 42 and the belt shaft 20 in this embodiment is designed to be an arc, which can be a circular arc surface, a parabola, or a curved surface formed by splicing multiple planes, so as to increase the contact area with the belt shaft 20 and improve the deceleration efficiency.

[0041] When implementing it, Figure 2 , Figure 3 As shown, the deceleration plate 42 is provided with two oppositely arranged ears 421, and the two ears 421 are sleeved on the mounting shaft 41 at intervals. The two ears 421 are sleeved on the mounting shaft 41 at intervals, which can provide a more stable and reliable pivot support, reduce the shaking or tilting of the deceleration plate 42 during the swinging process, and ensure that its contact with the belt shaft 20 is more uniform and stable; the first torsion spring 43 is located between the two ears 421, which can make the overall structure of the deceleration assembly 40 more compact and reduce the occupied space.

[0042] In some embodiments, the second end of the belt shaft 20 is provided with knurling for increasing friction. The knurling is a fine mesh pattern pressed on the surface of the belt shaft 20, which can increase the friction coefficient of the contact surface, so that the deceleration component 40 obtains greater friction resistance when it abuts against the belt shaft 20, achieving a more effective deceleration effect. In another specific embodiment, Figure 2 , Figure 3 As shown, the second end of the belt shaft 20 is sleeved with a gear 21, and the tooth tip of the gear 21 contacts the plate surface of the speed reducer 42 on the side away from the first torsion spring 43. The gear 21 is usually made of high-strength metal material with excellent wear resistance. The contact between the tooth tip and the speed reducer 42 not only reduces the direct wear on the surface of the belt shaft 20, but also, as an independent component, can be easily replaced when severely worn, reducing maintenance costs.

[0043] In some embodiments, Figure 2 , Figure 3 As shown, the deceleration plate 42 has a second position that does not act on the belt shaft 20, and the deceleration plate 42 is provided with an operating handle 422, which is configured to be able to be applied with external force by the operator, so as to drive the deceleration plate 42 to switch between the first position in contact with the belt shaft 20 and the second position in which the deceleration plate 42 is not in contact with the belt shaft 20 or the contact is weakened. Under normal circumstances, under the action of the first torsion spring 43, the deceleration plate 42 remains in the first position, closely abuts against the outer peripheral surface of the second end of the belt shaft 20, generates friction resistance, and realizes the restriction of the winding speed. However, in the actual operation process, it may sometimes be necessary to temporarily speed up the winding speed or completely release the deceleration effect. At this time, the operator can press or toggle the operating handle 422 to overcome the force of the first torsion spring 43, drive the deceleration plate 42 to pivot around the mounting shaft 41, and move it to the second position. In the second position, the friction between the deceleration plate 42 and the belt shaft 20 will be significantly reduced, or even completely out of contact, thereby allowing the belt shaft 20 to wind the binding belt at a faster speed under the drive of the spiral spring 30. For example, at the beginning of winding, the binding belt may be relatively loose. At this time, the operator can press the operating handle 422 to place the speed reducer 42 in the second position, thereby accelerating the initial winding speed and shortening the operation time. When the binding belt is gradually tightened, the operator can release the operating handle 422 to allow the speed reducer 42 to return to the first position under the action of the first torsion spring 43, and re-limit the winding speed to prevent winding too fast.

[0044] In some embodiments, Figure 2 , Figure 3As shown, a clearance hole 11 is provided on the side wall of the bracket 10, and the deceleration plate 42 has a first pressing portion 423 extending through the clearance hole 11 to the receiving space; the top of the bracket 10 is provided with an operation window 60 that exposes the first pressing portion 423 and the receiving space. With this structural design, the operating end of the operating handle 422, i.e., the first pressing portion 423, can be accommodated inside the receiving space of the bracket 10, and through the operation window 60 provided on the top of the bracket 10, the operator can still conveniently press the first pressing portion 423, effectively avoiding the direct impact of external environmental factors (such as accidental squeezing or collision during bundling or transportation) on the first pressing portion 423, significantly improving the reliability and durability of the deceleration control mechanism, and reducing the risk of failure of the deceleration function due to accidental touch or external force.

[0045] In some embodiments, Figure 2 , Figure 3 As shown, it also includes a protective shell 44, which is fixedly mounted on the side wall of the bracket 10 and covers the deceleration assembly 40; one end of the first torsion spring 43 abuts against the upper plate surface of the deceleration plate 42, and the other end abuts against the inner wall of the protective shell 44. The provision of the protective shell 44 can effectively completely cover the key components of the deceleration assembly 40 (such as the mounting shaft 41, the deceleration plate 42, the first torsion spring 43, etc.), prevent external dust, debris, moisture, etc. from entering the interior of the deceleration assembly, avoid failure of the deceleration function or performance degradation due to interference from foreign objects, and significantly improve the reliability and durability of the deceleration assembly. In another example, similar to the deceleration assembly, a volute housing the volute spring 30 is also provided on the side where the volute spring 30 is located to provide protection for the volute spring 30.

[0046] In some embodiments, Figures 1 to 5 As shown, the blocking assembly 50 includes:

[0047] A take-up reel 52 with ratchets 51 at both ends is rotatably mounted on the belt shaft 20;

[0048] A handle 54 with an eccentric wheel 53, wherein the handle 54 is rotatably mounted on the belt shaft 20 via the eccentric wheel 53;

[0049] A first check plate 55 is provided on the bracket 10 and acts on the ratchet wheel 51 through a compression spring 56 to prevent the take-up reel 52 from rotating in a direction opposite to the direction of winding the binding belt;

[0050] A second check plate 57, provided on the handle 54, acts on the ratchet wheel 51 through a second torsion spring 58, and is used to prevent the take-up reel 52 from rotating in the opposite direction of the winding binding belt;

[0051] Among them, the handle 54 is configured to drive the eccentric wheel 53 to rotate in the direction of winding the binding belt under the action of external force, so as to drive the first check plate 55 to switch from a position acting on the ratchet 51 to a position not acting on the ratchet 51; a second pressing portion 571 is provided on the second check plate 57, and the second pressing portion 571 is used to control the second check plate 57 to switch from a position acting on the ratchet 51 to a position not acting on the ratchet 51.

[0052] In actual work, see Figure 5 As shown:

[0053] During normal operation, the rear end of the bracket 10 and the wound-up binding belt on the take-up reel 52 are hung at the target position through the hooks on the front and rear sides of the bracket 10 respectively. At this time, the first check plate 55 is engaged with the ratchet teeth of the ratchet 51 under the action of the compression spring 56, and the second check plate 57 is engaged with the ratchet teeth of the ratchet 51 under the action of the second torsion spring 58, thereby preventing the take-up reel 52 from rotating in the opposite direction (clockwise) to the wound-up binding belt, ensuring that the goods will not be shifted due to loosening of the binding belt during transportation.

[0054] When it is necessary to further tighten the bound cargo, the handle 54 is turned to make the eccentric wheel 53 rotate in the direction of the winding binding belt (counterclockwise). The rotation of the eccentric wheel 53 will push the first check plate 55 to compress the compression spring 56 until the first check plate 55 disengages from the ratchet teeth of the ratchet wheel 51. At the same time, the second check plate 57 arranged on the rotating handle 54 remains in a state of engagement with the ratchet wheel 51, driving the ratchet wheel 51 and the winding reel 52 to rotate counterclockwise, thereby contracting the binding belt. By repeatedly turning the handle 54, the binding belt can be gradually tightened until the cargo is firmly bound.

[0055] When it is necessary to loosen the cargo, the second pressing portion 571 is pressed to switch the second check plate 57 from a position acting on the ratchet 51 to a position not acting on the ratchet 51, that is, the second check plate 57 is disengaged from the ratchet teeth of the ratchet 51. At this time, by rotating the handle 54, the eccentric wheel 53 rotates counterclockwise to push the first check plate 55 to compress the compression spring 56 until the first check plate 55 is disengaged from the ratchet teeth of the ratchet 51. At this time, the ratchet 51 and the take-up reel 52 can rotate clockwise or counterclockwise without restriction. The operator can directly move the bracket 10 and pull the binding belt to relax it to the desired length, thereby conveniently achieving the loosening of the cargo.

[0056] In some embodiments, Figure 2 , Figure 3As shown, the second check plate 57 has a limiting protrusion 572 protruding from the bracket 10, and a guide groove 12 is provided on the side wall of the bracket 10 for limiting the movement range of the limiting protrusion 572. Through the limitation of the guide groove 12, the rotation angle of the second check plate 57, that is, the handle 54, is limited within the expected range to avoid damage caused by excessive rotation.

[0057] The tensioning machine provided in this embodiment, while ensuring a compact structure, places the volute spring and the deceleration assembly at both ends of the belt shaft, which not only makes the overall layout more reasonable, but also effectively reduces the mutual interference between components, significantly reduces the complexity of the structure, and specifically provides the belt shaft with a rotational driving force in the direction of winding the binding belt through the volute spring, thereby realizing the automatic recovery function of the binding belt and effectively eliminating the tedious operation of manual sorting. At the same time, the deceleration assembly acts on the belt shaft in the form of friction, which can effectively reduce the rotation speed of the belt shaft, avoids the safety hazards caused by too fast recovery of the webbing, and improves the reliability and service life of the equipment.

[0058] In the description of the present application, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to 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 application.

[0059] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0060] Finally, it should be noted that the above is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A tensioning machine, characterized in that: include: A bracket having a receiving space for receiving the binding belt; A belt shaft, rotatably mounted on the bracket and passing through the receiving space, and used for winding and reeling the binding belt; A spiral spring, arranged on the belt shaft, is used to make the belt shaft have a tendency to rotate in the direction of winding the binding belt; A deceleration assembly, disposed on the belt shaft, for acting on the belt shaft to reduce the rotation speed of the belt shaft when the belt shaft rotates in the direction of winding the binding belt; A blocking assembly, provided on the bracket, for selectively locking or releasing the rotation of the belt shaft; The belt shaft has a first end exposed outside the bracket and a second end arranged opposite to the first end, the spiral spring is arranged at the first end of the belt shaft, and the deceleration assembly is arranged at the second end of the belt shaft.

2. The tensioning machine according to claim 1, characterized in that: The speed reduction assembly is configured to act on the belt shaft by friction.

3. The tensioning machine according to claim 1, characterized in that: The deceleration assembly includes a mounting shaft, a deceleration plate, and a first torsion spring sleeved on the mounting shaft and acting on the deceleration plate. The deceleration plate is pivotally connected to the mounting shaft and has a first position. In the first position, the deceleration plate rests against the outer peripheral surface of the second end of the belt shaft under the action of the first torsion spring.

4. The tensioning machine according to claim 3, characterized in that: The deceleration plate is provided with two ears arranged opposite to each other, and the two ears are sleeved on the mounting shaft at an interval; the first torsion spring is located between the two ears.

5. The tensioning machine according to claim 4, characterized in that: The second end of the belt shaft is provided with knurling for increasing friction; or, the second end of the belt shaft is provided with a gear, and the tooth tip of the gear is in contact with the plate surface of the deceleration plate on the side away from the first torsion spring.

6. The tensioning machine according to claim 4, characterized in that: The deceleration plate has a second position that does not act on the belt shaft. An operating handle is provided on the deceleration plate, and the operating handle is configured to drive the deceleration plate to switch from the first position to the second position.

7. The tensioning machine according to claim 6, characterized in that: A clearance hole is provided on the side wall of the bracket, and the deceleration plate has a first pressing portion extending through the clearance hole to the receiving space; and an operating window exposing the first pressing portion and the receiving space is provided on the top of the bracket.

8. The tensioning machine according to claim 3, characterized in that: It also includes a protective shell, which is fixedly mounted on the side wall of the bracket and covers the deceleration assembly; one end of the first torsion spring abuts against the upper plate surface of the deceleration plate, and the other end abuts against the inner wall of the protective shell.

9. The tensioning machine according to any one of claims 1 to 8, characterized in that: The blocking assembly comprises: A take-up reel with ratchets at both ends is rotatably mounted on the belt shaft; A handle with an eccentric wheel, wherein the handle is rotatably mounted on the belt shaft through the eccentric wheel; A first check plate, provided on the bracket, acts on the ratchet wheel through a compression spring, and is used to prevent the take-up reel from rotating in a direction opposite to the direction of winding the binding belt; A second check plate, provided on the handle, acts on the ratchet wheel through a second torsion spring, and is used to prevent the take-up reel from rotating in a direction opposite to the direction of winding the binding belt; Among them, the handle is configured to drive the eccentric wheel to rotate in the direction of winding the binding belt under the action of external force, so as to drive the first check plate to switch from a position acting on the ratchet to a position not acting on the ratchet; a second pressing portion is provided on the second check plate, and the second pressing portion is used to control the second check plate to switch from a position acting on the ratchet to a position not acting on the ratchet.

10. The tensioning machine according to claim 9, characterized in that: The second check plate has a limiting protrusion protruding from the bracket, and a guide groove for limiting the moving range of the limiting protrusion is arranged on the side wall of the bracket.

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