Lock catch packing belt

Abstract

A driving roller, a first pressing roller and a second pressing roller are movably installed between a side plate and a supporting plate, a first bevel gear is fixedly installed at one end of the driving roller, a main shaft is fixedly installed on a base, the main shaft is in transmission connection with the first bevel gear through a second bevel gear, and a ratchet wheel is fixedly installed on the main shaft. The base is movably provided with a blocking piece through a fixing shaft, and the main shaft is provided with a hexagonal connecting shaft. The driving roller and the first pressing roller are matched to press one end of the packing belt body, the driving roller and the second pressing roller are matched to press the other end of the packing belt body, then the driving roller and the hexagonal connecting shaft of the main shaft are clamped and fixed through a hand tool or an electric tool, the driving roller is driven to rotate, the first pressing roller and the second pressing roller are matched, and the packing belt body is tightened. And then the ratchet wheel is matched with the blocking piece, the main shaft is locked, the driving roller is automatically locked, the packing belt body does not need to be manually and forcibly tensioned, and the physical power of workers is saved.

Description

Technical Field

[0001] This utility model belongs to the field of packing strap technology, specifically relating to a locking packing strap. Background Technology

[0002] Strapping straps, also known as bundling straps, are a common packaging material. Their main raw materials include polyethylene, polypropylene resin, and cold-rolled steel strip; nylon and polyester are also sometimes used. Strapping straps are manufactured through various processes, typically including extrusion unidirectional stretching or heat treatment bluing. They are widely used in the packaging industry, not only for sealing and bundling corrugated boxes, but also for bundling hot-rolled and cold-rolled steel coils, and for securing and packaging various items such as glass, pipes, and wood. Most existing locking strapping uses belt buckles or hook-and-loop fasteners, but these require significant effort to tighten and secure, making them physically demanding.

[0003] Chinese utility model patent CN220616841U discloses a locking strap, which includes a lock head, a connecting groove in the lower center of the lock head, a connecting post between the inner walls of the connecting groove, and a strap around the connecting post. The lock head above the connecting groove has a through groove, a first clamping arch in the lower center of the through groove, a threaded hole in the upper center of the lock head, a locking screw in the threaded hole, and a second clamping arch around the lower periphery of the locking screw. By incorporating the lock head, through groove, first clamping arch, second clamping arch, locking screw, connecting pin, connecting sleeve, and handle, the lock can securely fasten the strap through the screw structure, ensuring the strap's strength and stability. The screw structure is not easily damaged or loosened, the strap can move easily within the lock, and the tightening degree is infinitely adjustable, making it very practical. However, when rolling the strap, it requires pulling it taut before tightening it again, which is very labor-intensive. Utility Model Content

[0004] The purpose of this utility model is to provide a locking strap to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a locking strap, comprising a strap body and a base, the base having a side plate, a support plate fixedly mounted on the base, an active roller, a first pressing roller and a second pressing roller movably mounted between the side plate and the support plate, the active roller being located between the first pressing roller and the second pressing roller, a first bevel gear fixedly mounted at one end of the active roller, a main shaft fixedly mounted on the base, the main shaft being drivenly connected to the first bevel gear via a second bevel gear, a ratchet fixedly mounted on the main shaft, a baffle plate movably mounted on the base via a fixed shaft, the fixed shaft being elastically connected to the baffle plate via a torsion spring, and a hexagonal connecting shaft on the main shaft.

[0006] Preferably, the base is fixedly mounted with a side shell, and the side shell is movably mounted with a handle, which is fixedly connected to the baffle plate by a steel wire rope.

[0007] Preferably, the drive roller is provided with anti-slip texture.

[0008] Preferably, the drive roller, the first pressing roller, and the second pressing roller are all made of stainless steel.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] The present invention features an active roller, a first pressing roller, and a second pressing roller movably mounted between the side plate and the support plate. A first bevel gear is fixedly mounted on one end of the active roller, and a main shaft is movably mounted on the base. The main shaft has a hexagonal connecting shaft, and the main shaft is connected to the first bevel gear via a second bevel gear. A ratchet is fixedly mounted on the main shaft, and a baffle is movably mounted on the base via a fixed shaft. In use, the active roller and the first pressing roller cooperate to press one end of the packing strap body, and the active roller and the second pressing roller cooperate to press the other end of the packing strap body. Then, a hand-cranked tool or an electric tool is used to engage and fix the hexagonal connecting shaft of the main shaft, driving the main shaft to rotate. The second bevel gear, in cooperation with the first bevel gear, drives the active roller to rotate, which, in conjunction with the first and second pressing rollers, tightens the packing strap body, completing the binding operation. Finally, the ratchet and the baffle lock the main shaft, automatically locking the active roller. This eliminates the need for manual force to tighten the packing strap body, saving workers' labor. Attached Figure Description

[0011] Figure 1 This is a structural view of the present invention.

[0012] Figure 2 This is the first perspective view of the internal structure of this utility model.

[0013] Figure 3 This is the second internal structural view of this utility model.

[0014] Figure 4 This is a third perspective view of the internal structure of this utility model.

[0015] Figure 5 This is a schematic diagram of the packing tape body winding roller assembly of this utility model.

[0016] Figure 6 This is a structural view of the active roller of this utility model.

[0017] The diagram shows: 1. Packing strap body, 2. Base, 3. Side plate, 4. Support plate, 5. Drive roller, 6. First pressing roller, 7. Second pressing roller, 8. First bevel gear, 9. Main shaft, 10. Second bevel gear, 11. Ratchet, 12. Fixed shaft, 13. Baffle, 14. Torsion spring, 15. Hexagonal connecting shaft, 16. Side shell, 17. Pull handle, 18. Wire rope, 19. Anti-slip texture. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example 1:

[0020] like Figures 1-6 As shown, this utility model provides a locking strap, including a strap body 1 and a base 2. The base 2 has a side plate 3, and a support plate 4 is fixedly installed on the base 2. An active roller 5, a first pressing roller 6, and a second pressing roller 7 are movably installed between the side plate 3 and the support plate 4. The active roller 5 is located between the first pressing roller 6 and the second pressing roller 7. A first bevel gear 8 is fixedly installed at one end of the active roller 5. A main shaft 9 is fixedly installed on the base 2. The main shaft 9 is connected to the first bevel gear 8 through a second bevel gear 10. A ratchet 11 is fixedly installed on the main shaft 9. A baffle 13 is movably installed on the base 2 through a fixed shaft 12. The fixed shaft 12 is elastically connected to the baffle 13 through a torsion spring 14. The main shaft 9 has a hexagonal connecting shaft 15. A side shell 16 is fixedly installed on the base 2. A handle 17 is movably installed on the side shell 16. The handle 17 is fixedly connected to the baffle 13 through a steel wire rope 18. The active roller 5 has anti-slip texture 19. The drive roller 5, the first pressing roller 6, and the second pressing roller 7 are all made of stainless steel.

[0021] Through the above technical solution, an active roller 5, a first pressing roller 6, and a second pressing roller 7 are movably installed between the side plate 3 and the support plate 4 of this utility model. A first bevel gear 8 is fixedly installed at one end of the active roller 5. A main shaft 9 is movably installed on the base 2. The main shaft 9 is provided with a hexagonal connecting shaft 15. The main shaft 9 is connected to the first bevel gear 8 through the second bevel gear 10. A ratchet 11 is fixedly installed on the main shaft 9. A baffle 13 is movably installed on the base 2 through a fixed shaft 12. In use, the active roller 5 and the first pressing roller 6 cooperate to press one end of the packing strap body 1. The active roller 5 and the second pressing roller 7 work together to press the other end of the strapping body 1. Then, the active roller 5 is fixed to the hexagonal connecting shaft 15 of the main shaft 9 by a hand-cranked tool or an electric tool, and the main shaft 9 is driven to rotate. The active roller 5 is driven to rotate by the second bevel gear 10 working with the first bevel gear 8. Together with the first pressing roller 6 and the second pressing roller 7, the strapping body 1 is tightened to complete the binding operation. Then, the main shaft 9 is locked by the ratchet 11 working with the baffle 13, and the active roller 5 is automatically locked. There is no need for manual force to tighten the strapping body 1, saving workers' physical strength.

[0022] Example 2:

[0023] like Figures 1-6As shown, this utility model includes a packing strap body 1 and a base 2. A side plate 3 is provided on the base 2, and a support plate 4 is fixedly installed thereon. An active roller 5, a first pressing roller 6, and a second pressing roller 7 are movably installed between the side plate 3 and the support plate 4. The active roller 5 is located between the first pressing roller 6 and the second pressing roller 7. A first bevel gear 8 is fixedly installed at one end of the active roller 5. A main shaft 9 is fixedly installed on the base 2, and the main shaft 9 is connected to the first bevel gear 8 via a second bevel gear 10. A ratchet 11 is fixedly installed on the main shaft 9. A baffle 13 is movably installed on the base 2 via a fixed shaft 12, and the fixed shaft 12 is elastically connected to the baffle 13 via a torsion spring 14. A hexagonal connecting shaft 15 is provided on the main shaft 9. During use, one end of the packing strap body 1 is passed between the active roller 5 and the first pressing roller 6, and the other end is passed between the active roller 5 and the second pressing roller 7. A hand-cranked tool or power tool is connected to the hexagonal connecting shaft 15 of the main shaft 9 to drive the main shaft 9 to rotate. The rotation of the main shaft 9 drives the second bevel gear 10 to rotate, which meshes with the first bevel gear 8, thereby driving the drive roller 5 to rotate. When the drive roller 5 rotates, it cooperates with the two pressure rollers to tighten the strapping body 1, completing the bundling of the item. After bundling, the ratchet 11 cooperates with the baffle 13 to lock the position of the main shaft 9. The baffle 13, under the action of the torsion spring 14, abuts against the ratchet 11, preventing the main shaft 9 from rotating in the opposite direction, thus locking the drive roller 5 and maintaining the tension of the strapping body 1. This locking mechanism does not require continuous manual force and can maintain the bundling state for a long time. When it is necessary to untie the strapping, external force can overcome the elasticity of the torsion spring 14, causing the baffle 13 to disengage from the ratchet 11. At this time, the main shaft 9 is unlocked, the drive roller 5 can rotate freely, and the strapping body 1 can be loosened. In this embodiment, the arrangement of the drive roller 5 and the two pressure rollers ensures that the strapping body 1 is evenly compressed during the bundling process. The bevel gear transmission structure enables the main shaft 9 to effectively drive the drive roller 5. The design of the ratchet 11 and the baffle 13 allows the main shaft 9 to be automatically locked after strapping is completed. The torsion spring 14 connecting the fixed shaft 12 and the baffle 13 ensures that the baffle 13 elastically abuts against the ratchet 11. Strapping can be completed by driving the main shaft 9 with a tool, eliminating the need for manual force to tighten the strapping. The locking mechanism automatically maintains tension, solving the problem of traditional strapping requiring continuous manual force. Unlocking is also simple; just disengage the baffle 13 from the ratchet 11. This design greatly improves strapping efficiency and reduces the labor intensity of operators.

[0024] Example 3:

[0025] like Figures 1-6As shown, this utility model has a side shell 16 fixedly installed on the base 2, and a handle 17 movably installed on the side shell 16. The handle 17 is fixedly connected to the baffle 13 via a steel wire rope 18. This structural design makes the unlocking operation more convenient. Specifically, a through hole is provided on the side shell 16 for the handle 17 to pass through. One end of the handle 17 is located outside the side shell 16 for easy gripping by the operator; the other end passes through the side shell 16 and is connected to the steel wire rope 18. The other end of the steel wire rope 18 is fixedly connected to the baffle 13. When unlocking is required, the operator only needs to pull the handle 17. The handle 17 drives the steel wire rope 18 to move, and the steel wire rope 18 then pulls the baffle 13. Under the action of external force, the baffle 13 disengages from the ratchet 11. At this time, the main shaft 9 is unlocked, the drive roller 5 can rotate freely, and the packing strap body 1 can be released. After releasing the handle 17, the baffle 13 will automatically return to its original position under the action of the torsion spring 14, re-engaging with the ratchet 11 and restoring the locked state. This automatic reset design ensures that the device requires no additional adjustment for the next use.

[0026] Example 4:

[0027] like Figures 1-6As shown, the base 2 of this device is provided with a side plate 3 and a fixed support plate 4. A drive roller 5, a first pressing roller 6, and a second pressing roller 7 are movably installed between the side plate 3 and the support plate 4. The drive roller 5 is located between the first pressing roller 6 and the second pressing roller 7. A first bevel gear 8 is fixedly installed at one end of the drive roller 5. A main shaft 9 is fixedly installed on the base 2, and the main shaft 9 is connected to the first bevel gear 8 via a second bevel gear 10. A ratchet 11 is fixedly installed on the main shaft 9. A baffle 13 is movably installed on the base 2 via a fixed shaft 12, and the fixed shaft 12 is elastically connected to the baffle 13 via a torsion spring 14. The main shaft 9 is provided with a hexagonal connecting shaft 15. The surface of the drive roller 5 is provided with anti-slip texture 19, which is evenly distributed spirally on the surface of the drive roller 5. During the packaging process, the packing strap body 1 first passes through the gap between the first pressing roller 6 and the drive roller 5, then around the drive roller 5, and then through the gap between the drive roller 5 and the second pressing roller 7. The operator drives the main shaft 9 to rotate via the hexagonal connecting shaft 15, which in turn drives the drive roller 5 to rotate. Due to the anti-slip texture 19 on the surface of the drive roller 5, a large frictional force is generated between the strapping body 1 and the drive roller 5, preventing the strapping body 1 from slipping off the surface of the drive roller 5 under high-speed rotation or high tension. When the drive roller 5 rotates, the anti-slip texture 19 and the surface of the strapping body 1 undergo slight deformation, further increasing the frictional force. This deformation does not cause permanent damage to the strapping body 1, but it significantly improves the gripping force of the drive roller 5 on the strapping body 1. The spiral design of the anti-slip texture 19 ensures the uniform distribution of the strapping body 1 on the surface of the drive roller 5, avoiding localized stress concentration. During the tightening process of the strapping body 1, the anti-slip texture 19 structure enables the drive roller 5 to continuously and stably transmit torque, preventing slippage even under high tension conditions. This design greatly improves packaging efficiency and the stability of packaging quality. Simultaneously, the presence of the anti-slip texture 19 also reduces wear on the strapping body 1 during the packaging process, extending the service life of the strapping body 1.

[0028] Example 5:

[0029] like Figures 1-6As shown, the base 2 of this utility model is provided with a side plate 3 and a fixedly installed support plate 4. An active roller 5, a first pressing roller 6, and a second pressing roller 7 are movably installed between the side plate 3 and the support plate 4. The active roller 5 is located between the first pressing roller 6 and the second pressing roller 7. A first bevel gear 8 is fixedly installed at one end of the active roller 5. A main shaft 9 is fixedly installed on the base 2, and the main shaft 9 is connected to the first bevel gear 8 via a second bevel gear 10. A ratchet 11 is fixedly installed on the main shaft 9. A baffle 13 is movably installed on the base 2 via a fixed shaft 12, and the fixed shaft 12 is elastically connected to the baffle 13 via a torsion spring 14. The main shaft 9 is provided with a hexagonal connecting shaft 15. The active roller 5, the first pressing roller 6, and the second pressing roller 7 are all made of stainless steel. During the packaging process, the strapping body 1 first passes through the gap between the first pressing roller 6 and the active roller 5. Due to the high strength of stainless steel, even when the strapping body 1 is highly tensioned, the first pressing roller 6 will not bend or deform. This ensures that the strapping body 1 remains straight when entering the system. The drive roller 5, as the core driving component, bears the greatest stress. Made of stainless steel, the drive roller 5 maintains excellent dimensional stability and surface hardness under high-speed rotation and high torque. This material choice avoids surface wear and deformation problems that may occur during long-term use, ensuring consistent packaging quality.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0031] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A locking strap, comprising a strap body and a base, the base having side plates, characterized in that, The base is fixedly mounted with a support plate. A drive roller, a first pressing roller, and a second pressing roller are movably mounted between the side plate and the support plate. The drive roller is located between the first pressing roller and the second pressing roller. A first bevel gear is fixedly mounted at one end of the drive roller. A main shaft is fixedly mounted on the base. The main shaft is driven by the first bevel gear through the second bevel gear. A ratchet is fixedly mounted on the main shaft. A baffle is movably mounted on the base through a fixed shaft. The fixed shaft is elastically connected to the baffle through a torsion spring. The main shaft is provided with a hexagonal connecting shaft.

2. The locking strap according to claim 1, characterized in that, The base is fixedly mounted with a side shell, and the side shell is movably mounted with a handle. The handle is fixedly connected to the baffle plate by a steel wire rope.

3. The locking strap according to claim 1, characterized in that, The active roller is equipped with anti-slip texture.

4. The locking strap according to claim 1, characterized in that, The drive roller, the first pressing roller, and the second pressing roller are all made of stainless steel.

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