A fast and efficient tensioner mechanism
By designing a fast and efficient tensioner mechanism, the problem of low operating efficiency of existing chain tensioners is solved, enabling rapid tightening and disassembly, which is suitable for the stability and safety requirements of modern logistics transportation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KUSN LUCKY SEA IND
- Filing Date
- 2025-05-15
- Publication Date
- 2026-07-17
AI Technical Summary
Existing chain tensioners are inefficient, labor-intensive, and fail to meet the demands of rapid loading and unloading, especially in special scenarios where their inefficiency is severe.
A fast and efficient tensioner mechanism was designed, comprising a sleeve, a pressure rod assembly, a quick-release assembly, and a handle assembly. It achieves rapid tightening and disassembly through a linkage structure. The modular design, combined with limit screws, binding parts, and safety pins, improves stability and convenience.
It enables rapid chain tightening and disassembly, reduces the labor intensity of operation, improves loading and unloading efficiency, and is suitable for frequent loading and unloading scenarios and special scenarios. It is safe, reliable and convenient.
Smart Images
Figure CN224510980U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cargo securing devices, and in particular to a fast and efficient tensioner mechanism. Background Technology
[0002] In the modern logistics and transportation system, waterway, railway and road transportation occupy a vital position. Among these modes of transportation, ensuring the stability and safety of goods during transportation is the primary task. The cargo securing link is indispensable. As a commonly used cargo securing tool, the tightening and loosening of chains rely on tensioners.
[0003] Most chain tensioners currently on the market rely on manual operation, tightening and loosening by rotating the screw round and round. This method has many drawbacks: On the one hand, the operation efficiency is extremely low. In scenarios with frequent loading and unloading of goods, it will seriously delay transportation time and increase logistics costs. Taking a large cargo terminal as an example, when loading and unloading a large amount of goods each time, the slow operation of the traditional tensioner will lead to a significant reduction in loading and unloading efficiency, affecting the turnover speed of ships or vehicles. On the other hand, the workers' labor intensity is extremely high. The repetitive action of rotating the screw for a long time can easily cause physical fatigue and may even lead to occupational injuries. Meanwhile, in some special scenarios, such as wartime material transportation and emergency relief material allocation, every second counts, and the problem of the low efficiency of traditional tensioners will be magnified infinitely. Utility Model Content
[0004] In view of the serious defects of the existing chain tensioners in terms of efficiency, labor intensity, applicability to special scenarios and structural reliability, this utility model is proposed.
[0005] Therefore, the purpose of this utility model is to provide a fast and efficient tensioner mechanism, which is aimed at addressing the urgent market need for a new type of efficient, convenient, and reliable tensioner mechanism to solve these problems.
[0006] To solve the above technical problems, this utility model provides the following technical solution: a fast and efficient tensioner mechanism, including a sleeve, one end of which is provided with a movable hole end, and the other end of which is provided with an internally threaded hole end that is coaxial with and connected to the movable hole end; A pressure rod assembly is installed on the top of the sleeve. The pressure rod assembly includes a U-shaped frame rotatably installed on one side of the sleeve and a vertical frame fixed on the other side of the sleeve. A pressure rod body is fixed at one end of the U-shaped frame near the vertical frame, and the pressure rod body is snapped into the vertical frame. The sleeve body has a quick-release assembly inside the movable hole end. The connecting end of the quick-release assembly is respectively equipped with an R-pin and a connecting ring. A small chain is fixed on both the R-pin and the connecting ring. A buckle is fixedly connected between one end of the two small chains. The quick-release component has a detachable binding component installed inside its mounting cavity. The binding component is one of a chain, an elephant foot, or a hook. The sleeve is threaded with a handle assembly through an internal threaded hole, and the handle assembly moves horizontally along the direction of the internal threaded hole. A chain clamp screw assembly is installed in the threaded cavity of the handle assembly, and the chain clamp screw assembly moves horizontally inside the handle assembly. A chain body is detachably installed in the mounting cavity at the end of the chain clamp screw assembly away from the sleeve.
[0007] As an improved technical solution, the quick-release assembly includes a connecting rod located inside the movable hole end. The end of the connecting rod away from the sleeve body is provided with a connecting seat, and the connecting seat is welded to the connecting seat. The end of the connecting seat away from the connecting rod is provided with a U-shaped cavity. The front of the connecting seat is provided with a pin hole 1 that communicates with the U-shaped cavity. The connecting seat is provided with a pin through the pin hole 1. The end of the pin away from the connecting ring is provided with an annular groove. The pin is provided with a pin hole 2 that engages with the R-pin at the position of the annular groove.
[0008] As an improved technical solution, the bottom of the sleeve near the quick-release component is provided with an internally threaded sleeve block, the bottom of the connecting rod is provided with an anti-disengagement groove, and a limit screw is threaded on the internally threaded sleeve block, with the tail end of the limit screw located inside the anti-disengagement groove.
[0009] As an improved technical solution, a protrusion is provided at the upper position of the sleeve near the end of the internal threaded sleeve block. A pin is rotatably installed on the protrusion through a pin hole two. Pin holes three are provided at both ends of the pin. Pin holes four are provided at both ends of the U-shaped frame. An elastic pin two is provided between pin holes three and four on the same side. The pin and the U-shaped frame are fixed by the elastic pin two inserted between pin holes three and four on the same side. A square groove two is provided at the end of the connecting rod away from the connecting seat. A square groove one that matches the square groove two is provided at the middle of the pin.
[0010] As an improved technical solution, the pressure rod body has a spring hole at one end near the vertical frame, a T-shaped post is provided inside the spring hole at one end near the vertical frame, a compression spring is provided inside the spring hole at one end away from the vertical frame, a slot is provided at the end of the T-shaped post away from the compression spring, and a protruding end that engages with the slot is provided at the top of the vertical frame, a pin channel is provided at the vertical end of the T-shaped post, and a pin hole three that communicates with the inside of the spring hole is provided at the end of the pressure rod body near the slot, and an elastic pin is provided inside the pin hole three.
[0011] As an improved technical solution, the handle assembly includes an internally threaded sleeve located inside the internally threaded hole end. One end of the internally threaded sleeve located inside the internally threaded hole end is integrally formed with an externally threaded end that is threadedly connected to the internally threaded hole end. An anti-disengagement retaining ring is fixed to one end of the internally threaded hole end near the chain clamp screw assembly to block the externally threaded end. A connecting block is provided at one end of the internally threaded sleeve located outside the sleeve body. A fixing sleeve is provided on the top of the connecting block. The handle body is fixed to the fixing sleeve through a round hole. A nut stop is fixed to one end of the handle body away from the fixing sleeve. A threaded rod is provided at the bottom of the fixing sleeve. A hexagonal nut is threadedly installed at one end of the threaded rod away from the fixing sleeve. An elastic washer is sleeved on the threaded rod between the connecting block and the hexagonal nut.
[0012] As an improved technical solution, the chain clamp screw assembly includes a crossbar located inside the internal threaded sleeve. One end of the crossbar inside the internal threaded sleeve is integrally formed with an external threaded end two that is threaded to the internal threaded hole on the internal threaded sleeve. An anti-disengagement retaining ring one for blocking the external threaded end two is fixed at one end of the internal threaded sleeve near the chain clamp screw assembly. A connecting block is welded to the end of the crossbar away from the external threaded end two. A chain cavity that engages with the chain body is provided at the end of the connecting block away from the crossbar.
[0013] As an improved technical solution, the front end face of the connecting block is provided with a pin hole 1, a safety pin is provided inside the pin hole 1, a spring groove is provided at one end of the safety pin inside the pin hole 1, a compression spring 2 is installed between the spring groove and one end inside the pin hole 1, a reduced diameter annular cavity is provided at the end of the safety pin near the compression spring 2, a square groove 3 is provided at the end of the safety pin away from the compression spring 2, and a pin hole 4 communicating with the pin hole 1 is provided at the top of the connecting block, and an elastic pin 3 is provided inside the pin hole 4.
[0014] As an improved technical solution, an air hole one is provided at the end of the internal threaded sleeve away from the external thread end one, and an air hole two is provided at the bottom of the sleeve body and near the end of the chain clamp screw assembly, which is connected to the internal threaded hole end.
[0015] After adopting the above technical solution, the beneficial effects of this utility model are: 1. In this utility model, the limiting screw acts as a stop for the quick-release component, ensuring that the quick-release component cannot detach from the interior of the movable hole end on the tensioner during rapid disassembly, thus ensuring the stable operation of the tensioner and making the tensioner safe and reliable.
[0016] 2. In this utility model, the binding component is installed inside the U-shaped cavity by a pin-type snap-fit, which facilitates the installation and removal of the binding component from the quick-release assembly. The chain body is secured inside the chain cavity by a safety pin, which on the one hand prevents the chain body from falling out of the chain cavity and maintains the stability of the tensioner, and on the other hand facilitates the quick installation and removal of the chain body from the chain cavity.
[0017] 3. In this utility model, when the tensioner is not in use, the handle body can be stored to reduce the overall space occupied by the tensioner, making it easy to store and carry. In addition, the double threaded adjustment not only has a fast tightening speed, but also a large stroke.
[0018] 4. In this utility model, the pressure rod assembly and the quick-release assembly are in a linked state. Operating the pressure rod assembly locks and releases the quick-release assembly. Its tightening speed far exceeds that of manual thread tightening, reducing the contraction of the tensioner and thus achieving rapid tightening. During disassembly, opening the pressure rod assembly allows the chain to unfold quickly. It has the function of quickly tightening and disassembling fasteners. At the same time, it adopts a modular design, which is compact, lightweight, easy to install and disassemble, has good compatibility, short replacement and maintenance time, and is efficient, convenient and reliable. Attached Figure Description
[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the overall structure of a fast and efficient tensioner mechanism according to this utility model.
[0020] Figure 2 This is a schematic diagram of the quick-release component of a fast and efficient tensioner mechanism according to this utility model.
[0021] Figure 3 This is a schematic diagram of the handle assembly of a fast and efficient tensioner mechanism according to this utility model.
[0022] Figure 4 This is a cross-sectional structural diagram of the pressure bar of a fast and efficient tensioner mechanism according to this utility model.
[0023] Figure 5 This is a schematic diagram of the chain clamp screw assembly of a fast and efficient tensioner mechanism according to this utility model.
[0024] Figure 6 This is a bottom sectional view of the crossbar structure of the fast and efficient tensioner mechanism of this utility model.
[0025] Figure 7 This is a cross-sectional structural diagram of the sleeve of a fast and efficient tensioner mechanism according to this utility model.
[0026] Figure 8 This is a schematic diagram of the tensioning process of a fast and efficient tensioner mechanism according to this utility model.
[0027] Figure 9 This is a schematic diagram of the tensioner disassembly process for a fast and efficient tensioner mechanism according to this utility model.
[0028] Figure 10 This is a schematic diagram of the chain disassembly process for a fast and efficient tensioner mechanism, which is a utility model.
[0029] Figure 11 This is a structural diagram of a fast and efficient tensioner mechanism in a rapidly tightened state, according to a utility model.
[0030] Figure 12 This is a structural diagram of a fast and efficient tensioner mechanism in a quick disassembly state, which is a utility model.
[0031] Explanation of reference numerals in the attached figures: 1. Sleeve body; 2. Pressure rod assembly; 21. Pin; 22. U-shaped frame; 23. Pressure rod body; 24. Spring hole; 25. Compression spring one; 26. T-shaped post; 27. Slot; 28. Protruding snap-fit end; 29. Elastic pin one; 210. Pin channel; 211. Vertical frame; 212. Square groove one; 213. Pin hole three; 214. Elastic pin two; 215. Pin hole four; 3. Quick release assembly; 31. Connecting rod; 32. Square groove two; 33. Pin shaft; 34. Connecting seat; 35. U-shaped cavity; 36. Annular groove; 37. Anti-detachment groove; 4. Handle assembly; 41. Internal threaded sleeve; 42. External threaded end one; 43. Air hole one; 44. Handle body; 45. Fixing sleeve; 46. Connecting... 47. Connecting block; 48. Hexagonal nut; 49. Threaded rod; 40. Nut stop; 410. Elastic washer; 5. Chain clamp screw assembly; 51. Crossbar; 52. External thread end two; 53. Connecting block; 54. Elastic pin three; 55. Chain cavity; 56. Safety pin; 57. Pin hole one; 58. Square groove three; 59. Reducing diameter ring cavity; 510. Spring groove; 511. Compression spring two; 6. Chain body; 7. Binding piece; 8. R-pin; 9. Ring buckle; 10. Connecting ring; 11. Small chain; 12. Anti-detachment retaining ring one; 13. Internal threaded sleeve block; 14. Protrusion; 15. Limiting screw; 16. Movable hole end; 17. Internal threaded hole end; 18. Air hole two; 19. Anti-detachment retaining ring two. Detailed Implementation
[0032] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0033] Example 1 Reference Figures 1-12 This is the first embodiment of the present utility model, which provides a fast and efficient tensioner mechanism. This fast and efficient tensioner mechanism includes a sleeve 1, one end of which is provided with a movable hole end 16, and the other end of which is provided with an internal threaded hole end 17 that is coaxial with and connected to the movable hole end 16. The top of the sleeve 1 is equipped with a pressure rod assembly 2. The pressure rod assembly 2 includes a U-shaped frame 22 rotatably mounted on one side of the sleeve 1 and a vertical frame 211 fixed on the other side of the sleeve 1. A pressure rod body 23 is fixed to one end of the U-shaped frame 22 near the vertical frame 211, and the pressure rod body 23 is snapped into the vertical frame 211. The movable hole end 16 on the sleeve 1 is provided with a quick release assembly 3. The connecting end of the quick release assembly 3 is respectively installed with an R pin 8 and a connecting ring 10. Small chains 11 are fixed on both the R pin 8 and the connecting ring 10. A ring buckle 9 is fixedly connected between one end of the two small chains 11. The small chains 11 are welded to the quick release assembly 3. One end of the small chain 11 is connected to the R pin 8, and the other end is connected to the pin 33 through the connecting ring 10. When the pin 33 is connected to the chain, the small chain 11 can be installed on the chain ring through the connecting ring 10 without being welded to the quick release assembly 3. The quick-release component 3 has a detachable binding component 7 installed inside its mounting cavity. The binding component 7 is one of a chain, elephant foot, or hook. Different binding components 7 are connected to different binding points to achieve quick binding of goods and meet the needs of quick binding under different working conditions. The sleeve 1 is threaded with a handle assembly 4 through the internal threaded hole end 17, and the handle assembly 4 moves horizontally along the direction of the internal threaded hole end 17. A chain clamp screw assembly 5 is installed in the threaded cavity of the handle assembly 4, and the chain clamp screw assembly 5 moves horizontally inside the handle assembly 4. A chain body 6 is detachably installed in the mounting cavity at the end of the chain clamp screw assembly 5 away from the sleeve 1.
[0034] The quick-release assembly 3 includes a connecting rod 31 located inside the movable hole end 16. The end of the connecting rod 31 away from the sleeve 1 is provided with a connecting seat 34, and the ring 9 is welded to the connecting seat 34. The end of the connecting seat 34 away from the connecting rod 31 is provided with a U-shaped cavity 35. The front of the connecting seat 34 is provided with a pin hole 1 that communicates with the U-shaped cavity 35. The connecting seat 34 is provided with a pin 33 through the pin hole 1. One end of the pin 33 is provided with a connecting hole that connects with the connecting ring 10. The end of the pin 33 away from the connecting ring 10 is provided with an annular groove 36. The pin 33 is provided with a pin hole 2 that engages with the R pin 8 at the position of the annular groove 36.
[0035] The process of installing the fastener 7 onto the quick-release assembly 3 is as follows: Place the binding piece 7 inside the U-shaped cavity 35 and insert the pin 33 into the first pin hole. At this time, the pin 33 not only passes through the inner cavity of the U-shaped cavity 35, but also through the cavity of the binding piece 7. Insert the R pin 8 into the second pin hole at the annular groove 36 to fix the pin 33 to the connecting seat 34, that is, fix the binding piece 7 inside the U-shaped cavity 35. Conversely, pull the R pin 8 out of the second pin hole and pull the pin 33 out of the U-shaped cavity 35 to remove the binding piece 7. The binding piece 7 is installed inside the U-shaped cavity 35 by the pin 33, which makes it easy to install and remove the binding piece 7 from the quick release assembly 3.
[0036] The bottom of the sleeve 1 near the quick-release assembly 3 is provided with an internally threaded sleeve block 13, which is connected to the interior of the movable hole end 16. The bottom of the connecting rod 31 is provided with an anti-disengagement groove 37. A limit screw 15 is threaded on the internally threaded sleeve block 13, and the tail end of the limit screw 15 is located inside the anti-disengagement groove 37. When the limit screw 15 is threaded on the internally threaded sleeve block 13, the tail end of the limit screw 15 enters the interior of the anti-disengagement groove 37. When quick disassembly is performed, the limit screw 15 slides inside the anti-disengagement groove 37 and limits the connecting rod 31. When the connecting rod 31 moves laterally, its range of motion is limited, and it cannot disengage from the interior of the movable hole end 16. The limit screw 15 acts as a block for the quick-release assembly 3, ensuring that the quick-release assembly 3 cannot disengage from the interior of the movable hole end 16 on the tensioner during quick disassembly. This ensures the stable operation of the tensioner and makes the tensioner safe and reliable.
[0037] The chain clamp screw assembly 5 includes a crossbar 51 located inside the internal threaded sleeve 41. One end of the crossbar 51 inside the internal threaded sleeve 41 is integrally formed with an external thread end 52 that is threaded to the internal threaded hole on the internal threaded sleeve 41. An anti-disengagement retaining ring 12 is fixed inside the internal threaded sleeve 41 near the chain clamp screw assembly 5 to block the external thread end 52. A connecting block 53 is welded to the end of the crossbar 51 away from the external thread end 52. The end of the connecting block 53 away from the crossbar 51 is provided with a chain cavity 55 that engages with the chain body 6. The anti-disengagement retaining ring 12 is provided to block the external thread end 52 and prevent the external thread end 52 from completely disengaging from the interior of the internal threaded sleeve 41 during rotation.
[0038] The front end face of the connecting block 53 has a pin hole 57. A safety pin 56 is provided inside the pin hole 57, and one end of the safety pin 56 is located outside the pin hole 57. A spring groove 510 is provided at the end of the safety pin 56 inside the pin hole 57. A compression spring 511 is installed between the spring groove 510 and the end inside the pin hole 57. A reduced diameter annular cavity 59 is provided at the end of the safety pin 56 near the compression spring 511. A square groove 58 is provided at the end of the safety pin 56 away from the compression spring 511. A pin hole 4 is provided on the top of the connecting block 53, which is connected to the pin hole 57. An elastic pin 54 is provided inside the pin hole 4, and the elastic pin 54 passes through the inside of the square groove 58. The chain clamp screw assembly 5 is an integrated design, which makes it perform well, have high reliability, and is easy to maintain.
[0039] The installation process for chain body 6 and chain clamp screw assembly 5 is as follows: Pressing the safety pin 56 into the first pin hole 57 compresses the second spring 511. At this point, the safety pin 56 is deeply inserted into the first pin hole 57, and the reducing ring cavity 59 is aligned with the chain cavity 55. After locking the chain body 6 inside the chain cavity 55, release the pressure applied to the safety pin 56. Under the elastic restoring action of the second spring 511, the safety pin 56 is driven to return to its original position outwards. The reducing ring cavity 59 and the chain cavity 55 are now misaligned. At this point, the diameter of the limiting point of the safety pin 56 increases, allowing the chain to pass through. The safety pin 56 secures the chain body 6 inside the chain cavity 55. When the chain body 6 needs to be disassembled, press the safety pin 56 so that the reduced diameter ring cavity 59 is aligned with the inside of the chain cavity 55. At this time, the diameter of the limit position of the chain clamp screw assembly 5 increases, allowing the chain body 6 to be removed from the inside of the chain cavity 55. The safety pin 56 secures the chain body 6 inside the chain cavity 55, which on the one hand prevents the chain body 6 from falling out of the chain cavity 55 and maintains the stability of the tensioner, and on the other hand facilitates the quick installation and removal of the chain body 6 from the inside of the chain cavity 55.
[0040] During use, the pressure rod assembly 2 and the quick-release assembly 3 are in a linked state. Operating the pressure rod assembly 2 locks and releases the quick-release assembly 3. When tightening the chain body 6, the quick-release assembly 3 is pushed into the sleeve 1, and the pressure rod assembly 2 is used to lock and fix the quick-release assembly 3, thereby achieving rapid tightening of the chain body 6. Its tightening speed is far greater than that of manual thread tightening, reducing the amount of tensioner contraction, thus achieving rapid tightening. When disassembling, the pressure rod assembly 2 is opened, and the quick-release assembly 3 quickly slides out from the inside of the sleeve 1. The tension of the chain body 6 decreases instantly, and then the quick-release pin is pulled out to achieve rapid unfolding. It has the function of rapid tightening and disassembly of fasteners. The installation time is less than 1 minute, and the disassembly time is less than 15 seconds. At the same time, it adopts a modular design, which is compact, lightweight, easy to install and disassemble, has good compatibility, short replacement and maintenance time, and is efficient, convenient and reliable.
[0041] Example 2 Reference Figures 3-4 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that: a protrusion 14 is provided at the upper position of the sleeve 1 near the end of the internal threaded sleeve block 13. A pin 21 is rotatably installed on the protrusion 14 through a pin hole 2. The two ends of the pin 21 are respectively connected to the two sides of the inner wall of the U-shaped frame 22. A pin hole 3 213 is provided at both ends of the pin 21. A pin hole 4 215 is provided at both ends of the U-shaped frame 22. An elastic pin 214 is provided between the pin hole 3 213 and the pin hole 4 215 on the same side. The pin 21 and the U-shaped frame 22 are fixed by the elastic pin 214 inserted between the pin hole 3 213 and the pin hole 4 215 on the same side. A square groove 2 32 is provided at the end of the connecting rod 31 away from the connecting seat 34. A square groove 1 212 that matches the square groove 2 32 is provided at the middle of the pin 21.
[0042] The pressure rod body 23 has a spring hole 24 at one end near the vertical frame 211. A T-shaped post 26 is provided inside the spring hole 24 at one end near the vertical frame 211. A compression spring 25 is provided inside the spring hole 24 at the other end away from the vertical frame 211, and the compression spring 25 abuts against the opposite end of the T-shaped post 26. A slot 27 is provided at the end of the T-shaped post 26 away from the compression spring 25. A protruding end 28 that engages with the slot 27 is provided at the top of the vertical frame 211. At the same time, a bevel is provided at the bottom of the T-shaped post 26. A pin channel 210 is provided at the vertical end of the T-shaped post 26. A pin hole 3 that communicates with the inside of the spring hole 24 is provided at the end of the pressure rod body 23 near the slot 27. An elastic pin 29 is provided inside the pin hole 3, and the elastic pin 29 passes through the inside of the pin channel 210.
[0043] The procedure for opening the pressure bar body 23 is as follows: Press the T-shaped post 26 into the spring hole 24 and compress the compression spring 25. At this time, the convex end 28 is disengaged from the inside of the slot 27, and the connection between the vertical frame 211 and the T-shaped post 26 is released, thus releasing the restriction on the pressure rod body 23. Rotate the pressure rod body 23 counterclockwise to open the pressure rod body 23. The procedure for closing the pressure bar 23 is as follows: Rotating the pressure rod body 23 clockwise causes the convex locking end 28 to apply pressure to the T-shaped post 26 in the direction of the compression spring 25. The T-shaped post 26 compresses the compression spring 25, causing the T-shaped post 26 to continuously enter the interior of the spring hole 24. When the convex locking end 28 is located on the side end face of the slot 27, under the elastic reset action of the compression spring 25, the T-shaped post 26 is pushed in the opposite direction to the vertical frame 211, so that the convex locking end 28 is locked inside the slot 27, thus completing the closing of the pressure rod body 23.
[0044] The handle assembly 4 includes an internally threaded sleeve 41 located inside the internally threaded hole end 17. One end of the internally threaded sleeve 41 inside the internally threaded hole end 17 is integrally formed with an externally threaded end 42 that is threadedly connected to the internally threaded hole end 17. A second anti-disengagement ring 19 is fixed to one end of the internally threaded hole end 17 near the chain clamp screw assembly 5 to prevent the externally threaded end 42 from completely disengaging from the internally threaded hole end 17 during rotation. The anti-disengagement rings 12 and 19 ensure that the threaded component does not detach from the base body during rotation. A connecting block 46 is provided at one end of the internally threaded sleeve 41 outside the sleeve body 1. A fixing sleeve 45 is provided on the top of the connecting block 46. The handle body 44 is fixed to the fixing sleeve 45 through a round hole. A nut stop block 49 is fixed to the end of the handle body 44 away from the fixing sleeve 45. A threaded rod 48 is provided at the bottom of the fixing sleeve 45, and a fixing through hole is provided on the connecting block 46 for the threaded rod 48 to pass through. A hexagonal nut 47 is threadedly installed on the end of the threaded rod 48 away from the fixing sleeve 45. An elastic washer 410 is fitted on the threaded rod 48 between the connecting block 46 and the hexagonal nut 47. When the tensioner is not in use, the handle body 44 can be stored to reduce the overall space occupied by the tensioner, making it easy to store and carry. In addition, the double threaded pair adjustment not only has a fast tightening speed, but also a large stroke.
[0045] The procedure for adjusting the tensioner stroke during use is as follows: Unscrew the hexagonal nut 47 from the threaded rod 48 to release its contact with the connecting block 46, thereby releasing the locking of the fixing sleeve 45 onto the connecting block 46. Rotate the handle body 44 outward by 90 degrees, then rotate the hexagonal nut 47 in the opposite direction to fix the handle body 44. At this time, the handle body 44 and the sleeve 1 are in a perpendicular state. The handle body 44 drives the internal threaded sleeve 41 to rotate. Under the thread transmission action of the external thread end 42 and the internal threaded hole end 17, and under the thread transmission action of the external thread end 52 and the threaded hole on the internal threaded sleeve 41, the internal threaded sleeve 41 and the crossbar 51 are driven to move outward synchronously, expanding the overall stroke of the tensioner. Conversely, the overall stroke of the tensioner can be reduced. When the handle body 44 is not needed, adjust the handle body 44 to a parallel state. At this time, the handle body 44 and the sleeve 1 are in a parallel state.
[0046] The remaining structure is the same as that in Example 1.
[0047] Example 3 Reference Figure 3 and Figure 7This is the third embodiment of the present invention. The difference between this embodiment and the second embodiment is that: an air hole 43 is provided at the end of the internal threaded sleeve 41 away from the external threaded end 42, and an air hole 18 is provided at the bottom of the sleeve body 1 and near the end of the chain clamp screw assembly 5, which is connected to the internal threaded end 17.
[0048] During normal use, a suitable amount of grease will be applied to the external thread end 42 and the external thread end 52. Air holes are provided on both the sleeve body 1 and the internal thread sleeve 41. The air holes are used to adjust the air pressure inside the internal thread hole end 17 and the internal thread sleeve 41 to maintain the stability of the internal air pressure balance.
[0049] The remaining structure is the same as that in Example 2.
[0050] Based on embodiments 1-3, the working principle of this utility model is as follows: The tensioner tightening process is as follows: By unfolding the handle body 44 and driving the internal threaded sleeve 41 to rotate, the stroke of the tensioner is adjusted to the maximum state; Rotate the pressure rod body 23 counterclockwise to open the pressure rod body 23, so that the square groove one 212 and the square groove two 32 are in a relative state, release the pin 21 from pressing down on the connecting rod 31, and then pull the quick release assembly 3 outward. Install the binding piece 7 on the quick release assembly 3 and the chain body 6 on the chain clamp screw assembly 5 to complete the connection and fixation between the fastener and the tensioner; Push the quick-release assembly 3 into the sleeve 1, then rotate the pressure rod 23 clockwise to close the pressure rod 23. At this time, the pin 21 presses down on the connecting rod 31 to fix it, and locks the quick-release assembly 3 into the inside of the movable hole end 16 for fixation. By rotating the handle body 44 in the opposite direction to the internal threaded sleeve 41, the overall stroke of the tensioner is shortened, the distance between the quick release component 3 and the chain clamp screw component 5 is shortened, and the chain body 6 is tightened. Finally, the handle body 44 is reset to a state parallel to the sleeve body 1 to complete the installation. The procedure for disassembling the tensioner is as follows: Press the T-shaped post 26 inward to release the engagement between the protruding end 28 and the T-shaped post 26, and rotate the pressure rod body 23 counterclockwise to release the downward pressure of the pin 21 on the connecting rod 31. At this time, under the tension on the chain body 6, the quick release component 3 will be pulled out to the end away from the sleeve body 1, so that the chain body 6 is in a loosened state; Pull R pin 8 upwards and pull out pin shaft 33. At this time, the chain body 6 is separated from the tensioner, achieving quick disassembly and completing the disassembly.
[0051] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A quick and efficient tensioner mechanism comprising a housing (1) characterized in that: One end of the sleeve (1) is provided with a movable hole end (16), and the other end of the sleeve (1) is provided with an internal threaded hole end (17) that is coaxial with and connected to the movable hole end (16). The top of the sleeve (1) is equipped with a pressure rod assembly (2). The pressure rod assembly (2) includes a U-shaped frame (22) rotatably mounted on one side of the sleeve (1) and a vertical frame (211) fixed on the other side of the sleeve (1). A pressure rod body (23) is fixed at one end of the U-shaped frame (22) near the vertical frame (211), and the pressure rod body (23) is snapped into the vertical frame (211). The sleeve (1) has a quick release assembly (3) inside the movable hole end (16). The quick release assembly (3) is equipped with an R pin (8) and a connecting ring (10) respectively. A small chain (11) is fixed on both the R pin (8) and the connecting ring (10). A ring buckle (9) is fixedly connected between one end of the two small chains (11). The quick-release component (3) has a detachable binding element (7) installed in its mounting cavity. The binding element (7) is one of a chain, an elephant foot, or a hook. The sleeve (1) is threaded with a handle assembly (4) through the internal threaded end (17), and the handle assembly (4) moves horizontally along the direction of the internal threaded end (17). A chain clamp screw assembly (5) is installed in the threaded cavity of the handle assembly (4), and the chain clamp screw assembly (5) moves horizontally inside the handle assembly (4). A chain body (6) is detachably installed in the mounting cavity at the end of the chain clamp screw assembly (5) away from the sleeve (1).
2. A quick and efficient tensioner mechanism as claimed in claim 1 characterized in that: The quick-release assembly (3) includes a connecting rod (31) located inside the movable hole end (16). The end of the connecting rod (31) away from the sleeve (1) is provided with a connecting seat (34), and a ring buckle (9) is welded to the connecting seat (34). The end of the connecting seat (34) away from the connecting rod (31) is provided with a U-shaped cavity (35). The front of the connecting seat (34) is provided with a pin hole that communicates with the U-shaped cavity (35). The connecting seat (34) is provided with a pin (33) through the pin hole. The end of the pin (33) away from the connecting ring (10) is provided with an annular groove (36). The pin (33) is provided with a pin hole (2) that engages with the R pin (8) at the position of the annular groove (36).
3. A quick and efficient tensioner mechanism as claimed in claim 2, wherein: The sleeve (1) has an internal threaded sleeve block (13) at the bottom near the quick release assembly (3), and the bottom of the connecting rod (31) has an anti-disengagement groove (37). A limit screw (15) is threaded on the internal threaded sleeve block (13), and the tail end of the limit screw (15) is located inside the anti-disengagement groove (37).
4. A quick and efficient tensioner mechanism as claimed in claim 3, wherein: The sleeve (1) has a protrusion (14) at the upper position near the end of the internal threaded sleeve block (13). The protrusion (14) is rotatably mounted with a pin (21) through a pin hole (2). Both ends of the pin (21) are provided with pin holes (213). Both ends of the U-shaped frame (22) are provided with pin holes (215). An elastic pin (214) is provided between the pin holes (213) and (215) on the same side. The pin (21) and the U-shaped frame (22) are fixed by the elastic pin (214) inserted between the pin holes (213) and (215) on the same side. The connecting rod (31) has a square groove (32) at the end away from the connecting seat (34). The middle part of the pin (21) has a square groove (212) that matches the square groove (32).
5. A quick and efficient tensioner mechanism as claimed in claim 4, wherein: The pressure rod body (23) has a spring hole (24) at one end near the vertical frame (211). A T-shaped post (26) is provided inside the spring hole (24) at one end near the vertical frame (211). A compression spring (25) is provided inside the spring hole (24) at one end away from the vertical frame (211). A slot (27) is provided at one end of the T-shaped post (26) away from the compression spring (25). A protruding end (28) that engages with the slot (27) is provided at the top of the vertical frame (211). A pin channel (210) is provided at the vertical end of the T-shaped post (26). A pin hole (3) that communicates with the inside of the spring hole (24) is provided at one end of the pressure rod body (23) near the slot (27). An elastic pin (29) is provided inside the pin hole (3).
6. A quick and efficient tensioner mechanism as claimed in claim 5, wherein: The handle assembly (4) includes an internally threaded sleeve (41) located inside the internally threaded hole end (17). One end of the internally threaded sleeve (41) inside the internally threaded hole end (17) is integrally formed with an externally threaded end (42) threaded to the internally threaded hole end (17). One end of the internally threaded hole end (17) near the chain clamp screw assembly (5) is fixed with an anti-disengagement ring (19) to block the externally threaded end (42). One end of the internally threaded sleeve (41) outside the sleeve body (1) is provided with a connecting block (46). A fixing sleeve (45) is provided on the top of the connecting block (46). A handle body (44) is fixed to the fixing sleeve (45) through a round hole. A nut stop block (49) is fixed to the end of the handle body (44) away from the fixing sleeve (45). A threaded rod (48) is provided at the bottom of the fixing sleeve (45). A hexagonal nut (47) is threaded onto the end of the threaded rod (48) away from the fixing sleeve (45). An elastic washer (410) is fitted on the threaded rod (48) and between the connecting block (46) and the hexagonal nut (47).
7. A quick and efficient tensioner mechanism as claimed in claim 6, wherein: The chain clamp screw assembly (5) includes a crossbar (51) located inside the internal threaded sleeve (41). One end of the crossbar (51) located inside the internal threaded sleeve (41) is integrally formed with an external thread end (52) that is threaded to the internal threaded hole on the internal threaded sleeve (41). One end of the internal threaded sleeve (41) near the chain clamp screw assembly (5) is fixed with an anti-disengagement retaining ring (12) for blocking the external thread end (52). A connecting block (53) is welded to the end of the crossbar (51) away from the external thread end (52). The end of the connecting block (53) away from the crossbar (51) is provided with a chain cavity (55) that engages with the chain body (6).
8. A quick and efficient tensioner mechanism as claimed in claim 7, characterized in that: The front end face of the connecting block (53) is provided with a pin hole (57), and a safety pin (56) is provided inside the pin hole (57). A spring groove (510) is provided at one end of the safety pin (56) inside the pin hole (57). A compression spring (511) is installed between the spring groove (510) and one end inside the pin hole (57). A reduced diameter annular cavity (59) is provided at one end of the safety pin (56) near the compression spring (511). A square groove (58) is provided at one end of the safety pin (56) away from the compression spring (511). A pin hole (4) communicating with the pin hole (57) is provided at the top of the connecting block (53). An elastic pin (54) is provided inside the pin hole (4).
9. A quick and efficient tensioner mechanism as claimed in claim 8, characterized in that: The internal threaded sleeve (41) has an air hole (43) at one end away from the external thread end (42), and the bottom of the sleeve (1) and the end near the chain clamp screw assembly (5) have an air hole (18) that communicates with the internal threaded hole end (17).