Binding belt tensioner

Abstract

The utility model provides a strainer for a binding belt, which comprises a strainer main body, two ends of which are respectively provided with a fixing part for fixing one end of the binding belt and a through hole for the other end of the binding belt to pass through; the pressing plate is rotationally connected to the tensioner body through a hinged shaft, a pressing head is arranged on the pressing plate, a pressing groove allowing the pressing head to be placed in is formed in the tensioner body, and an opening of the pressing groove faces the penetrating hole; and the driver is mounted between the tensioner main body and the pressing plate and is used for driving the pressing head to move towards the pressing groove, so that the binding belt is pressed in the pressing groove. The tensioner can reduce manpower needed by operation and improve tensioning efficiency, and has the advantages of improving connection reliability and operation convenience and prolonging the service life.

Description

Technical Field

[0001] This utility model relates to the field of binding device technology, and more specifically, to a binding strap tensioner. Background Technology

[0002] Bundles are widely used as essential connection and load-bearing tools in many fields, including industrial production, outdoor work, and daily life. The connection effectiveness at both ends of the bundle has a crucial impact on the overall safety and efficiency of the work. Currently, the connection at both ends of the bundle is generally achieved by knotting.

[0003] In industrial settings, such as during cargo hoisting and equipment pulling, when using knotted straps to secure the straps, the knots are subjected to complex friction and stress during operation. Over time, this can lead to loosening of the knots. Loose straps can cause serious problems such as goods falling or equipment malfunction, resulting in property damage and potentially endangering personnel. Furthermore, tightening the straps requires significant effort from operators to adjust the knots, especially with long straps or heavy loads, making the tightening process time-consuming and labor-intensive, severely impacting work efficiency. Repeatedly tightening the straps can also cause wear and tear, further reducing their lifespan and connection quality.

[0004] Therefore, the problems of loosening and difficulty in tightening traditional knotting methods have become key factors affecting the efficiency and quality of binding strap connections. To meet the high-efficiency and safe binding strap connections required in various fields, there is an urgent need for a binding strap tensioner that can solve the above problems, thereby improving the efficiency and quality of binding strap connections and ensuring the smooth progress of related operations. Utility Model Content

[0005] The purpose of this application is to provide a strap tensioner that has the advantages of improving the reliability of strap connection and ease of operation.

[0006] This application provides a strap tensioner, comprising: a tensioner body having a fixing part for fixing one end of the strap and a through hole for the other end of the strap to pass through at both ends; a pressure plate rotatably connected to the tensioner body via a hinge, the pressure plate having a pressure head, and the tensioner body having a pressure groove for inserting the pressure head, the opening of the pressure groove facing the through hole; and a driver installed between the tensioner body and the pressure plate for driving the pressure head to move toward the pressure groove, thereby pressing the strap into the pressure groove.

[0007] Compared with the prior art, the binding strap tensioner disclosed in this application has the following advantages: through the combined design of the hinged clamping plate and the driver, an automatically locking clamping structure is formed on the tensioner body, replacing the traditional knotting method and realizing rapid tightening and reliable locking of the binding strap; the cooperation structure of the pressure head and the pressure groove can evenly distribute the force on the binding strap, avoiding wear problems caused by local stress concentration; the continuous clamping force provided by the driver can prevent the binding strap from loosening and falling off when vibrating or under changing load, thereby improving connection efficiency and safety.

[0008] In one possible implementation, the hinge shaft is fixedly connected to the tensioner body, and the pressure plate has a hinge hole, which is fitted onto the hinge shaft to form a revolute joint structure. Compared with the prior art, this achieves a reliable connection and flexible rotation between the pressure plate and the tensioner body, thereby enabling the pressure plate to rotate stably around the hinge shaft, ensuring that the pressure head can be accurately pressed into the pressure groove.

[0009] In one possible implementation, the actuator is a helical torsion spring, which is sleeved on a hinge shaft, with its two ends connected to the tensioner body and the pressure plate, respectively. Compared to existing technologies, this implementation provides an automatic reset function for the pressure plate. The elasticity of the helical torsion spring ensures that the pressure plate maintains a stable clamping force over a long period, preventing the binding straps from loosening and improving the reliability and safety of the binding strap connection.

[0010] In one possible implementation, the end of the clamping plate away from the pressure head is provided with a pressing part, which drives the clamping plate to rotate around the hinge axis, causing the pressure head to disengage from the pressure groove. Compared with the prior art, this achieves rapid release of the strapping. The operator only needs to lightly press the pressing part to drive the clamping plate to rotate, allowing the pressure head to disengage from the pressure groove without complicated operations, thereby releasing the strapping; at the same time, it simplifies the strapping disassembly process and improves operational efficiency.

[0011] In one possible implementation, the pressure head is integrally formed on the clamping plate, and the bottom surface of the pressure head matches the bottom surface of the pressure groove. Compared with the prior art, this achieves an integrated design of the pressure head and the clamping plate, improving the reliability and safety of the strap tensioner.

[0012] In one possible implementation, the bottom surface of the pressure head is provided with a plurality of serrated protrusions, which cooperate with the pressure groove to clamp the binding strap. Compared with the prior art, this improves the clamping effect of the binding strap. The serrated protrusions increase the friction between the pressure head and the binding strap, preventing the binding strap from slipping under force.

[0013] In one possible implementation, both the tensioner body and the pressure plate are metal sheet metal stamping parts. Compared with the prior art, this improves the overall strength and durability of the strap tensioner. The metal sheet metal stamping of the tensioner body and pressure plate has high mechanical strength, enabling it to withstand greater tensile and compressive forces, and reducing the risk of deformation and damage.

[0014] In one possible implementation, the tensioner body and / or the pressure plate are provided with reinforcing ribs. Compared with the prior art, this effectively enhances the bending resistance of the sheet metal parts. When subjected to the tension of the strapping strap, the reinforcing ribs suppress local deformation of the metal sheet through the rigidity enhancement of the geometric shape, so that the fit accuracy between the pressure plate and the tensioner body can be maintained for a long time, ensuring the stability of the strapping strap clamping force. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this application;

[0016] Figure 2 This is a cross-sectional view of this application;

[0017] Figure 3 This is a schematic diagram of the clamping plate.

[0018] Figure 4 This is a schematic diagram of the tensioner body.

[0019] Figure 5 This is a schematic diagram illustrating the usage status of this application;

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Tensioner body; 11. Fixing part; 12. Perforation; 13. Pressure groove; 2. Pressure plate; 21. Pressure head; 211. Serrated protrusion; 22. Hinge hole; 23. Pressing part; 3. Hinge shaft; 4. Driver; 10. Binding strap. Detailed Implementation

[0022] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0023] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0024] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0025] In traditional tie-down methods, when the two ends are connected by knotting, the knots can slip under dynamic loads due to friction and stress concentration, significantly increasing the risk of fixation failure. Because the knot structure lacks a mechanical locking function, operators must continuously apply external force to maintain the tension of the tie-down strap. This not only results in excessive manpower consumption but also accelerates material wear due to repeated adjustments, directly affecting the reliability of the load-bearing system and the continuity of operations.

[0026] If the above problems are not solved, buckle slippage will cause the effective tension of the lashing straps to fail to be maintained within the safe threshold, increasing the risk of goods falling or equipment overturning; repeated manual intervention will significantly reduce work efficiency and cause operational errors due to high physical exertion; at the same time, the lashing straps will wear faster due to local stress concentration, shortening their service life and increasing maintenance costs, ultimately restricting the feasibility of application in large-scale operation scenarios.

[0027] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0028] See Figures 1 to 4 This application discloses a strap tensioner, comprising: a tensioner body 1, a pressure plate 2, and a driver 4; the tensioner body 1 has a fixing part 11 for fixing one end of the strap 10 and a through hole 12 for the other end of the strap 10 to pass through at both ends; the pressure plate 2 is rotatably connected to the tensioner body 1 via a hinge 3, and the pressure plate 2 is provided with a pressure head 21, and the tensioner body 1 is provided with a pressure groove 13 for the pressure head 21 to be inserted, the opening of the pressure groove 13 facing the through hole 12; the driver 4 is installed between the tensioner body 1 and the pressure plate 2, and is used to drive the pressure head 21 to move toward the pressure groove 13, so that the strap is pressed into the pressure groove 13.

[0029] The tensioner body 1 is a structural component used to bear tensile force. It can be made by stamping metal sheet to form a structure with through holes at both ends. The fixing part 11 is used to fix one end of the binding strap to provide an anchor point. The through hole 12 is used to guide the other end of the binding strap through for subsequent tightening operations. The clamping plate 2 is a movable part that is connected to the tensioner body 1 by a hinge. It can be made by stamping sheet metal. The pressure head 21 and the pressure groove 13 cooperate to form a clamping area. The driver 4 is a driving element that provides clamping power. The driver 4 acts between the clamping plate 2 and the tensioner body 1 to generate a continuous clamping force to ensure that the pressure head 21 is stably pressed into the pressure groove 13.

[0030] As described above, during operation, one end of the binding strap is fixed in the fixing part 11, and the other end passes through the through hole 12. The driver 4 drives the pressing plate 2 to rotate around the hinge shaft 3, causing the pressing head 21 to move towards the pressing groove 13. After the pressing head 21 enters the pressing groove 13, it presses the binding strap tightly within the pressing groove 13, thus fixing the binding strap. The opening of the pressing groove 13 is set facing the through hole 12 to ensure that the binding strap can smoothly enter the pressing groove 13 and be pressed tightly. The operation is simple and quick, reducing manpower consumption and improving work efficiency.

[0031] In this embodiment, the hinge shaft 3 is fixedly connected to the tensioner body 1, and the pressure plate 2 is provided with a hinge hole 22. The hinge hole 22 is fitted onto the hinge shaft 3 to form a rotating pair structure. The hinge shaft 3 can be a cylindrical shaft made of metal and is fixed to the tensioner body 1 by riveting or bolting. The pressure plate 2 has a circular through hole with a diameter slightly larger than that of the hinge shaft 3 as the hinge hole 22. The inner wall of the hinge hole 22 forms a clearance fit with the outer surface of the hinge shaft 3. In long-term use, the fit structure between the fixed hinge shaft 3 and the hinge hole 22 can reduce component wear, extend the service life of the rotating pair, and improve the reliability of the clamping action.

[0032] In this embodiment, the actuator 4 is a helical torsion spring, which is sleeved on the hinge shaft 3. Both ends of the helical torsion spring are connected to the tensioner body 1 and the pressure plate 2, respectively. The sleeve position of the helical torsion spring is limited to the outer surface of the hinge shaft 3, and its two ends form force transmission paths with the tensioner body 1 and the pressure plate 2 through fixed points. The axis of the helical torsion spring coincides with the axis of the hinge shaft 3, ensuring that the torsional arm of the torsion spring is aligned with the rotation center of the hinge shaft 3, thus avoiding the generation of eccentric torque. Furthermore, the number of turns of the helical torsion spring is designed according to the rotation angle range of the pressure plate 2 to ensure matching the required driving torque of the pressure plate 2. Specifically, when the clamping plate 2 rotates around the hinge shaft 3, the two ends of the helical torsion spring are relatively twisted along with the main body and the clamping plate 2, at which time the torsion spring accumulates elastic potential energy; when the external force is released, the helical torsion spring drives the pressure head 21 to move towards the pressure groove 13 by releasing the elastic potential energy, thereby reducing the gap between the pressure head 21 and the pressure groove 13, thus tightening the binding strap passing through the pressure groove 13; this design, through the integrated layout of the hinge shaft 3 and the helical torsion spring, simplifies the drive structure while improving the reliability and response speed of the clamping action.

[0033] In this embodiment, a pressing part 23 is provided at the end of the pressing plate 2 away from the pressing head 21. The pressing part 23 is used to drive the pressing plate 2 to rotate around the hinge shaft 3, so that the pressing head 21 disengages from the pressing groove 13. The pressing part 23 is located at the far end of the pressing plate 2 and forms a lever structure with the pressing head 21. The length and shape of the pressing part 23 are designed according to the operating torque requirements. The surface of the pressing part 23 may be provided with anti-slip textures or protrusions to increase friction. When the pressing plate 2 rotates, the helical torsion spring is compressed and stores energy. After the pressing part 23 is released, the torsion spring resets and drives the pressing head 21 to press back into the pressing groove 13. The material of the pressing part 23 is the same as that of the pressing plate 2, and it is integrally formed by stamping process to ensure structural strength. Specifically, the pressing part 23 amplifies the operating force through the lever principle. When the operator presses the far end of the pressing part 23, a small force can overcome the resistance of the spiral torsion spring, causing the pressing head 21 to quickly disengage from the pressing groove 13. When the pressing part 23 is released, the spiral torsion spring releases its stored energy, pushing the pressing head 21 to reset and re-tighten the strap.

[0034] In this embodiment, the pressure head 21 is integrally formed on the pressure plate 2, and the bottom surface of the pressure head 21 matches the bottom surface of the pressure groove 13. The bottom surface of the pressure head 21 is provided with a plurality of serrated protrusions 211, which cooperate with the pressure groove 13 to clamp the binding strap. The integrally formed pressure head 21 and the pressure plate 2 have no relative displacement, avoiding the risk of deformation or breakage of the separate structure under stress. The serrated protrusions 211 are triangular in structure, with their tips facing the opening of the pressure groove 13, forming a one-way interlocking structure. Specifically, when the driver 4 drives the pressure head 21 to move towards the pressure groove 13, the tips of the serrated protrusions 211 pierce into the surface material of the binding strap, increasing the microscopic meshing area of ​​the contact surface. The groove structure on the bottom surface of the pressure groove 13 provides support space for the serrated protrusions 211, allowing the binding strap to deform locally and embed into the groove after being compressed, forming a mechanical interlock and firmly clamping the binding strap.

[0035] In this embodiment, both the tensioner body 1 and the pressure plate 2 are provided with reinforcing ribs. The reinforcing ribs are formed into raised or recessed strip structures on the sheet metal surface by stamping. Their extension direction is perpendicular to or forms an angle with the direction of force, which effectively suppresses plastic deformation. This design achieves strength improvement by optimizing material distribution without increasing the thickness of the sheet metal, while maintaining the economy of the stamping process.

[0036] In this embodiment, the inner wall of the perforation 12 is provided with a rounded corner transition structure. This design effectively reduces the frictional resistance of the binding strap as it moves along the inner wall of the hole, preventing the fiber material from snagging or being cut at the right-angle edges. The rounded corner transition structure allows the binding strap to move smoothly during threading, especially reducing jamming during tightening operations and improving operational efficiency. At the same time, the arc-shaped contact surface evenly distributes the local stress on the binding strap, preventing material fatigue fracture caused by stress concentration and significantly extending the service life of the binding strap.

[0037] In the description of the embodiments of this application, it should be noted that the terms "inner" and "outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0038] In the description of this application, the references to terms such as "an embodiment," "some embodiments," "in this embodiment," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0039] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A lashing strap tensioner characterized by, include: The tensioner body has a fixing part at each end for fixing one end of the binding strap and a through hole for the other end of the binding strap to pass through. A pressure plate is rotatably connected to the tensioner body via a hinge shaft. The pressure plate is provided with a pressure head, and the tensioner body is provided with a pressure groove for inserting the pressure head. The opening of the pressure groove faces the through hole. A driver, installed between the tensioner body and the pressure plate, is used to drive the pressure head to move toward the pressure groove, so that the strapping is pressed into the pressure groove.

2. The strap tightener of claim 1, wherein, The hinge shaft is fixedly connected to the tensioner body, and the pressure plate is provided with a hinge hole, which is sleeved on the hinge shaft to form a rotating pair structure.

3. The strap tightener of claim 2, wherein, The actuator is a helical torsion spring, which is sleeved on the hinge shaft. The two ends of the helical torsion spring are respectively connected to the tensioner body and the pressure plate.

4. The strap tightener of claim 3, wherein, The pressing plate has a pressing part at the end away from the pressing head. The pressing part is used to drive the pressing plate to rotate around the hinge axis, so that the pressing head disengages from the pressing groove.

5. The strap tightener of claim 1, wherein, The pressure head is integrally formed on the pressure plate, and the bottom surface of the pressure head is matched with the bottom surface of the pressure groove.

6. The strap tightener of claim 5, wherein, The bottom surface of the pressure head is provided with several serrated protrusions, which cooperate with the pressure groove to clamp the binding strap.

7. The lacing tensioner of claim 1, wherein, Both the tensioner body and the pressure plate are metal sheet stamping parts.

8. The strap tightener of claim 7, wherein, The tensioner body and / or the clamping plate are provided with reinforcing ribs.

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