A tensioner device

Abstract

The application discloses a tensioner device and relates to the technical field of tensioners; the device comprises a base frame, a tensioning mechanism is installed on the base frame, the tensioning mechanism comprises a clamping assembly, a pulling assembly and a guiding assembly, the clamping assembly comprises translation frames, two translation frames are symmetrically arranged, guide rods are fixed to the end portions of the translation frames, side supports are installed on the base frame, the guide rods are slidingly connected to the inner walls of the side supports, two symmetric slide seats are slidingly connected to the outer walls of each translation frame in an up-down mode, and the slide seats and the translation frames are connected through slide seat springs; through the cooperation of the guide wheels and the second guide plates, the first guide plates and the one-way leaf plates, the device can realize multiple pulling of a belt body, complete the tensioning of the belt body and improve the reliability and practicality of the device through the reciprocating pulling of the pulling assembly without winding the belt body and keeping the belt body as flat as possible.

Description

Technical Field

[0001] This invention relates to the field of tensioner technology, and more particularly to a tensioner device. Background Technology

[0002] A tensioner is a tool widely used in packaging, transportation, construction, warehousing, and other fields. It is primarily used to tension and secure flexible straps such as steel straps, plastic straps, and ropes to bundle and reinforce goods, components, or materials. Its core function is to apply sufficient tension after the strap is wrapped around the object being bundled, ensuring it adheres tightly to the object, and maintaining this tension to secure the joint, thereby ensuring the strength and reliability of the bundle.

[0003] Currently, common tensioners are mainly divided into manual, hydraulic, and pneumatic drive types. Among them, manual tensioners are widely used in many situations due to their simple structure, convenient operation, and lack of external power source. Traditional manual tensioners typically rely on gear racks, levers, or winding mechanisms for their working principle. For example, a common type of tensioner uses a handle to drive a reel, winding the belt around it to achieve tension. However, this type of winding tensioner has some inherent drawbacks: firstly, repeated winding of the belt can cause it to twist, scratch, or undergo permanent deformation, affecting its appearance and strength; secondly, the winding process is relatively inefficient and requires considerable effort when tightening thick or hard belts; and thirdly, its structure often has limited adaptability to the thickness and width of the belt. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a tensioner device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A tensioner device includes a base frame on which a tensioning mechanism is mounted. The tensioning mechanism includes a clamping assembly, a pulling assembly, and a guiding assembly. The clamping assembly includes a translation frame, with two translation frames symmetrically arranged. Each translation frame has a guide rod fixed to its end. A side bracket is mounted on the base frame, and the guide rod is slidably connected to the inner wall of the side bracket. Two symmetrical slide blocks are slidably connected to the outer wall of each translation frame. The slide blocks and the translation frame are connected by slide block springs. Two slide blocks located on the same horizontal plane form a group, and a common clamping plate is fixed between the two slide blocks in the same group. The upper and lower clamping plates are symmetrically arranged. The pulling assembly is used to pull the clamping assembly to move, and the guiding assembly is used to cause the clamping assembly to clamp or release when it moves.

[0006] As a preferred embodiment of the present invention: The guiding component includes a mounting seat, which is symmetrically arranged up and down. One side of the mounting seat is equipped with a first guiding plate and a second guiding plate. Both ends of the first guiding plate and the second guiding plate bend and extend away from the symmetry plane. The length of the second guiding plate is greater than that of the first guiding plate. Both ends of the second guiding plate are located obliquely above both ends of the first guiding plate. There is a channel gap between the first guiding plate and the second guiding plate. A guiding wheel is rotatably mounted on the side of the sliding seat through a shaft. The guiding wheel rolls on the surface of the second guiding plate or the first guiding plate under the action of the sliding seat spring. The width of the channel gap is greater than the diameter of the guiding wheel. One end of the clamping plate opposite to the tensioning direction is hinged with a one-way leaf plate. The one-way leaf plate is connected to the first guiding plate through a volute spring. The end of the one-way leaf plate away from the first guiding plate is pressed against the surface of the second guiding plate under the action of the volute spring, and there is a smooth transition between the one-way leaf plate and the first guiding plate. The pulling component is used to pull the translation frame to move back and forth.

[0007] As a preferred embodiment of the present invention: The pulling component includes a handle. The bottom end of the handle is rotatably mounted on the base frame through a shaft. A strip-shaped groove is formed in the middle of the handle. A connecting frame is fixed on one side of the translation frame. One end of the connecting frame is rotatably equipped with a dial wheel, and the dial wheel rolls in the strip-shaped groove of the handle.

[0008] As a preferred embodiment of the present invention: The translation frame and the handle are arranged in a staggered manner; the bottom end of the handle is in a C-shaped, U-shaped, V-shaped or "匚"-shaped structure that bends away from the translation frame.

[0009] As a preferred embodiment of the present invention: One side of the base frame is provided with a support plate. An adjusting screw is rotatably mounted on the support plate. A vertical rod is fixed on the support plate. The mounting seat is slidably connected to the outer wall of the vertical rod. The adjusting screw is provided with threads with opposite helical directions symmetrically up and down. The two mounting seats are mounted at two threads with opposite helical directions; the top end of the adjusting screw is fixed with a screwing head.

[0010] As a preferred embodiment of the present invention: One side of the base frame is fixed with a scale bar, and scale lines are provided on the side of the scale bar.

[0011] As a preferred embodiment of the present invention: One side outer wall of the mounting seat is fixed with an indicating needle, and one end of the indicating needle extends to one side of the scale bar.

[0012] As a preferred embodiment of the present invention: An end constraint mechanism is provided on one side of the tensioning mechanism. The end constraint mechanism includes a lower mounting frame. An upper mounting frame is arranged above the lower mounting frame. Carrier plates are mounted on both the lower mounting frame and the upper mounting frame. Rubber wheels are rotatably mounted on the carrier plates through shafts.

[0013] As a preferred embodiment of the present invention: A ratchet is mounted on the shaft of the rubber wheel, and a ratchet pawl cooperating with the ratchet is mounted on one side of the carrier plate.

[0014] As a preferred embodiment of the present invention: a guide post is fixed on the lower mounting bracket, the upper mounting bracket is slidably connected to the outer wall of the guide post, and an adjusting screw is rotatably mounted on the lower mounting bracket, the adjusting screw being threadedly connected to the inner wall of the upper mounting bracket.

[0015] The beneficial effects of this invention are as follows: This invention, by setting up a first guide plate, a second guide plate, and other structures, and with the cooperation of the guide wheel, the second guide plate, the first guide plate, and the one-way blade plate, can achieve multiple pulls on the belt body by reciprocating the pulling component, thus completing the belt tensioning. This method eliminates the need to wind the belt body, can maintain the flatness of the belt body as much as possible, and improves reliability and practicality.

[0016] This invention, by setting up a handle, a dial, and other structures, enables the translation frame to move back and forth by reciprocating the handle, using the transmission of the dial and connecting frame. At the same time, the top of the handle is the gripping part, which has a longer lever arm than the dial position, thus achieving the effect of saving effort.

[0017] This invention, by setting up structures such as adjusting screws, allows the screw head to be turned according to actual needs. The distance between the two mounting seats can be adjusted by adjusting the screws, thereby adjusting the distance between the two first guide plates. Ultimately, this changes the clamping distance between the two clamping plates after the guide wheel passes the first guide plate.

[0018] This invention, by setting an end constraint mechanism, can adjust the distance between two carrier plates based on the adjusting screw, adapting to belts of different thicknesses. When the belt is conveyed, it can move forward, with the rubber wheel rotating to convey it. When the belt retracts, the rubber wheel cannot rotate due to the restriction of the ratchet and pawl, which can limit the retraction of the belt and improve its practicality. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a tensioner device proposed in this invention; Figure 2 This is a schematic diagram of the tensioner device proposed in this invention from another angle; Figure 3 This is a schematic diagram of the end constraint mechanism of a tensioner device proposed in this invention; Figure 4 This is a schematic diagram of the tensioning mechanism of a tensioner device proposed in this invention; Figure 5 This is a schematic diagram of the tensioning mechanism on one side of a tensioner device proposed in this invention; Figure 6 This is a schematic diagram of the structure of a tensioner device proposed in this invention, showing the cooperation between the guide wheel, the first guide plate, the second guide plate, and the one-way blade.

[0020] In the diagram: 1-Base frame; 2-Screwing head; 3-Handle; 4-Adjusting screw; 5-Upper mounting bracket; 6-Carrier plate; 7-Lower mounting bracket; 8-Scale bar; 9-Guide rod; 10-Side bracket; 11-Guide rod spring; 12-Transfer bracket; 13-Guide wheel; 14-Clamping plate; 15-Slide seat; 16-Slide seat spring; 17-Ratchet; 18-Pawl; 19-Guide post; 20-Rubber wheel; 21-Indicator pin; 22-Mounting seat; 23-Dial wheel; 24-First guide plate; 25-Second guide plate; 26-One-way blade; 27-Connecting bracket; 28-Adjusting screw. Detailed Implementation

[0021] The technical solution of the present invention will be further described in detail below with reference to specific embodiments.

[0022] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0023] This embodiment provides a tensioner device, such as... Figure 1-6 As shown, the device includes a base frame 1, on which a tensioning mechanism is mounted. The tensioning mechanism includes a clamping assembly, a pulling assembly, and a guiding assembly. The clamping assembly includes a translation frame 12, with two translation frames 12 symmetrically arranged. Each translation frame 12 has a guide rod 9 fixed to its end. A side support 10 is mounted on the base frame 1. The guide rod 9 is slidably connected to the inner wall of the side support 10. The translation frame 12 and the side support 10 are connected by a guide rod spring 11. Each translation frame 12 has two symmetrical slide blocks 15 slidably connected to its outer wall. The slide blocks 15 and the translation frame 12 are connected by a slide block spring 16. Two slide blocks 15 located on the same horizontal plane form a group. The same clamping plate 14 is fixed between the two slide blocks 15 in the same group. The upper and lower clamping plates 14 are symmetrically arranged. The pulling assembly is used to pull the clamping assembly to move. The guiding assembly is used to cause the clamping assembly to clamp or release when it moves.

[0024] like Figure 1-6As shown, the guiding assembly includes a mounting base 22, which is symmetrically arranged vertically. A first guide plate 24 and a second guide plate 25 are mounted on one side of the mounting base 22. Preferably, the planes of symmetry of the two first guide plates 24 and the two second guide plates 25 coincide with the planes of symmetry of the two clamping plates 14. Both ends of the first guide plate 24 and the second guide plate 25 are bent and extended away from the planes of symmetry. The length of the second guide plate 25 is greater than the length of the first guide plate 24. The two ends of the second guide plate 25 are located diagonally above the two ends of the first guide plate 24. There is a channel gap between the first guide plate 24 and the second guide plate 25. A guide wheel 13 is rotatably mounted on the side of the slide block 15 via a shaft. The guide wheel 13 rolls on the surface of the second guide plate 25 or the first guide plate 24 under the action of the slide block spring 16. The width of the channel gap is greater than the diameter of the guide wheel 13. A one-way blade 26 is hinged to the end of the clamping plate 14 opposite to the tensioning direction. The one-way blade 26 is connected to the first guide plate 24 by a spiral spring. The end of the one-way blade 26 away from the first guide plate 24 is pressed tightly against the surface of the second guide plate 25 under the action of the spiral spring, and there is a smooth transition between the one-way blade 26 and the first guide plate 24. The pulling assembly is used to pull the translation frame 12 to reciprocate. By setting up structures such as the first guide plate 24 and the second guide plate 25, in the initial state, the guide wheel 13 is in contact with one end of the second guide plate 25. When the pulling assembly is pulled, the one-way blade 26 and the first guide plate 24 guide the guide wheel 13, causing the two guide wheels 13 to approach each other and pass through the middle of the two first guide plates 24 at the same time. At this time, the two clamping plates 14 clamp the belt. As the structure continues to pull, the guide wheel 13 pulls the belt in the clamped state a certain distance. When the guide wheel 13 has completely passed the first guide plate 24, the belt is pulled further. When the guide plate 24 reaches the other end of the first guide plate 24, the two guide wheels 13 move away from each other to the upper and lower sides. The guide wheels 13 loosen the belt body, and the pulling assembly pulls the translation frame 12 to make the guide wheels 13 reach the other end of the second guide plate 25. Then, the translation frame 12 is pushed back to its original position. At this time, the guide wheels 13 enter the channel gap and push the one-way blade 26 open from the inside of the channel gap and move it to the initial position to realize the reset of the structure. By repeating the above method, the belt body can be pulled multiple times to achieve belt tension. This method eliminates the need for winding the belt, thus maintaining its flatness as much as possible and improving reliability and practicality.

[0025] To facilitate pulling; such as Figure 5 , Figure 6 As shown, the pulling assembly includes a handle 3, the bottom end of which is rotatably mounted on the base frame 1 via a shaft. A strip groove is provided in the middle of the handle 3. A connecting frame 27 is fixed on one side of the translation frame 12. A dial wheel 23 is rotatably mounted on one end of the connecting frame 27. The dial wheel 23 rolls in the strip groove of the handle 3. By setting structures such as the handle 3 and the dial 23, the handle 3 can be reciprocally pulled, and through the transmission of the dial 23 and the connecting frame 27, the translation frame 12 can be driven to reciprocate. At the same time, the top end of the handle 3 is the holding place, which has a longer lever arm compared to the position of the dial 23, achieving the effect of labor saving.

[0026] To avoid movement interference while ensuring the movement stroke; as Figure 5 shown, the translation frame 12 and the handle 3 are arranged in a staggered manner to avoid movement interference. The bottom end of the handle 3 is in a C-shaped, U-shaped, V-shaped or "匚"-shaped structure that bends away from the translation frame 12, so as to prevent the handle 3 from blocking the connection between the bottom translation frame 12 and the guide rod 9 when being pulled.

[0027] To facilitate adjusting the distance between the two clamping plates 14 when clamping; as Figure 4 、 Figure 6 shown, a support plate is provided on one side of the base frame 1. An adjusting screw rod 28 is rotatably installed on the support plate. A vertical rod is fixed on the support plate. The mounting seat 22 is slidably connected up and down on the outer wall of the vertical rod. The adjusting screw rod 28 is provided with threads that are symmetrically arranged up and down and have opposite helix directions. The two mounting seats 22 are installed at the two threads with opposite helix directions; a screwing head 2 is fixed at the top end of the adjusting screw rod 28; By setting structures such as the adjusting screw rod 28, according to actual needs, the screwing head 2 can be screwed, and the distance between the two mounting seats 22 can be adjusted through the adjusting screw rod 28, and then the distance between the two first guiding plates 24 can be adjusted. Finally, after the guiding wheel 13 passes through the first guiding plate 24, the change in the clamping distance between the two clamping plates 14 can be realized.

[0028] To facilitate judging the adjustment distance; as Figure 4 shown, a scale bar 8 is fixed on one side of the base frame 1, and scale lines are provided on the side of the scale bar 8.

[0029] To facilitate judging the adjustment distance; as Figure 4 shown, an indicating needle 21 is fixed on the outer wall of one side of the mounting seat 22, and one end of the indicating needle 21 extends to one side of the scale bar 8.

[0030] To facilitate constraining the end of the belt; as Figure 1-3 shown, an end constraint mechanism is provided on one side of the tensioning mechanism. The end constraint mechanism includes a lower mounting frame 7. An upper mounting frame 5 is provided above the lower mounting frame 7. Carrier plates 6 are installed on both the lower mounting frame 7 and the upper mounting frame 5. Rubber wheels 20 are rotatably installed on the carrier plates 6 through shafts.

[0031] To prevent the belt from retracting; as Figure 3 shown, a ratchet wheel 17 is installed on the shaft of the rubber wheel 20, and a pawl 18 that cooperates with the ratchet wheel 17 is installed on one side of the carrier plate 6.

[0032] To facilitate adjustment of the distance between the upper and lower rubber rollers 20; such as Figure 3 As shown, a guide post 19 is fixed on the lower mounting bracket 7, the upper mounting bracket 5 is slidably connected to the outer wall of the guide post 19, and an adjusting screw 4 is rotatably mounted on the lower mounting bracket 7. The adjusting screw 4 is threadedly connected to the inner wall of the upper mounting bracket 5. By setting an end constraint mechanism, the distance between the two carrier plates 6 can be adjusted based on the adjusting screw 4 to adapt to belts of different thicknesses (such as steel belts). When the belt is conveyed, it can move forward, and the rubber wheel 20 rotates to convey it. When the belt retracts, the rubber wheel 20 cannot rotate under the restriction of the ratchet 17 and the pawl 18, which can limit the retraction of the belt and improve its practicality.

[0033] For the parts not disclosed in detail in this invention, such as necessary control modules, specific control methods, signal transmission methods, power supply methods, etc., those skilled in the art can ensure the smooth implementation of the solution of this invention based on common sense, normal thinking logic and existing technology.

[0034] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A tensioner device, characterized in that, It includes a base frame (1), on which a tensioning mechanism is installed. The tensioning mechanism includes a clamping component, a pulling component and a guiding component. The clamping component includes a translation frame (12). Two translation frames (12) are symmetrically arranged. Guide rods (9) are fixed at the ends of the translation frames (12). Side brackets (10) are installed on the base frame (1). The guide rods (9) are slidably connected to the inner walls of the side brackets (10). Two symmetric sliding seats (15) are slidably connected to the outer walls of each translation frame (12) up and down. The sliding seats (15) and the translation frames (12) are connected by sliding seat springs (16). Two sliding seats (15) located on the same horizontal plane are in a group, and the same clamping plate (14) is fixed between the two sliding seats (15) in the same group. The upper and lower clamping plates (14) are symmetrically arranged; the pulling component is used to pull the clamping component to move, and the guiding component is used to prompt the clamping component to clamp or release when the clamping component moves.

2. The tensioner device according to claim 1, characterized in that, The guiding component includes a mounting seat (22). The mounting seats (22) are symmetrically arranged up and down. A first guiding plate (24) and a second guiding plate (25) are installed on one side of the mounting seat (22). Both ends of the first guiding plate (24) and the second guiding plate (25) bend and extend in the direction away from the symmetry plane; the length of the second guiding plate (25) is greater than that of the first guiding plate (24). Both ends of the second guiding plate (25) are located obliquely above both ends of the first guiding plate (24). There is a channel gap between the first guiding plate (24) and the second guiding plate (25). A guiding wheel (13) is rotatably installed on the side of the sliding seat (15) through a shaft. The guiding wheel (13) rolls on the surface of the second guiding plate (25) or the first guiding plate (24) under the action of the sliding seat spring (16). The width of the channel gap is greater than the diameter of the guiding wheel (13). One end of the clamping plate (14) opposite to the tensioning direction is hinged with a one-way leaf plate (26). The one-way leaf plate (26) and the first guiding plate (24) are connected by a scroll spring. One end of the one-way leaf plate (26) away from the first guiding plate (24) is tightly pressed against the surface of the second guiding plate (25) under the action of the scroll spring, and there is a smooth transition between the one-way leaf plate (26) and the first guiding plate (24); the pulling component is used to pull the translation frame (12) to reciprocate.

3. A tensioner device according to claim 2, characterized in that, The pulling component includes a handle (3). The bottom end of the handle (3) is rotatably installed on the base frame (1) through a shaft. A strip-shaped groove is formed in the middle of the handle (3). A connecting frame (27) is fixed on one side of the translation frame (12). One end of the connecting frame (27) is rotatably installed with a dial wheel (23). The dial wheel (23) rolls in the strip-shaped groove of the handle (3).

4. A tensioner device according to claim 3, characterized in that, The translation frame (12) and the handle (3) are arranged in a staggered manner; the bottom end of the handle (3) is in a C-shaped, U-shaped, V-shaped or "匚" - shaped structure that bends away from the translation frame (12).

5. A tensioner device according to claim 3, characterized in that, A support plate is provided on one side of the base frame (1), and an adjusting screw (28) is rotatably installed on the support plate. A vertical rod is fixed on the support plate, and the mounting seat (22) is slidably connected to the outer wall of the vertical rod. The adjusting screw (28) is provided with threads that are symmetrical and opposite in direction. Two mounting seats (22) are installed at the two threads with opposite directions. A screw head (2) is fixed at the top of the adjusting screw (28).

6. A tensioner device according to claim 5, characterized in that, A scale bar (8) is fixed on one side of the base frame (1), and scale lines are provided on the side of the scale bar (8).

7. A tensioner device according to claim 6, characterized in that, An indicator needle (21) is fixed to one side of the outer wall of the mounting base (22), and one end of the indicator needle (21) extends to one side of the scale bar (8).

8. A tensioner device according to claim 1, characterized in that, The tensioning mechanism is provided with an end constraint mechanism on one side. The end constraint mechanism includes a lower mounting frame (7), an upper mounting frame (5) is provided above the lower mounting frame (7), and a carrier plate (6) is installed on both the lower mounting frame (7) and the upper mounting frame (5). A rubber wheel (20) is rotatably mounted on the carrier plate (6) via a shaft.

9. A tensioner device according to claim 8, characterized in that, A ratchet (17) is mounted on the shaft of the rubber wheel (20), and a pawl (18) that cooperates with the ratchet (17) is mounted on one side of the carrier plate (6).

10. A tensioner device according to claim 9, characterized in that, The lower mounting bracket (7) is fixed with a guide post (19), the upper mounting bracket (5) is slidably connected to the outer wall of the guide post (19), and the lower mounting bracket (7) is rotatably mounted with an adjusting screw (4), which is threadedly connected to the inner wall of the upper mounting bracket (5).

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