A chain tensioner for a speed-multiplying chain

Abstract

This utility model belongs to the field of tensioner technology, specifically disclosing a chain tensioner for a double-speed chain. It includes an adjusting plate, an adjusting screw, and a fixing component. Two pairs of claws are hinged at intervals on the adjusting plate, each claw being a flared V-shape, symmetrically arranged within the same pair. The adjusting screw is threadedly connected to the adjusting plate. The fixing component is located directly below the adjusting plate, with the adjusting screw passing through the adjusting plate and fixedly connected to the fixing component. The two pairs of claws are limited by passing through the fixing component and extending outside the fixing component to form clamping ends. This utility model clamps the front and rear outer rollers on the two chain links that need to be loosened on the double-speed chain using the two pairs of claws. The rotation of the adjusting screw drives the adjusting plate to rise and fall, and in conjunction with the limiting effect of the fixing component, the clamping angle of the two pairs of claws is adjusted synchronously, thereby efficiently assembling and disassembling the double-speed chain. The entire tensioner has a reasonable structure and is easy to operate, especially effective for double-speed chains with small wheel spacing, achieving efficient assembly and disassembly of such chains.

Description

Technical Field

[0001] This utility model belongs to the field of tensioner technology, and in particular relates to a chain tensioner for a speed-multiplying chain. Background Technology

[0002] In today's era of rapid technological advancement, automated equipment, with its advantages of high efficiency, precision, and stability, has been widely used in numerous fields such as industrial production, logistics and transportation, and electronics manufacturing. Automated conveying systems, as a key component of automated equipment, are responsible for the transfer of materials or products in the production process, and their performance directly affects the efficiency and stability of the entire production line.

[0003] As a core transmission component in automated conveying systems, the double-speed chain is increasingly widely used in the field of automated conveying due to its unique structural design and excellent conveying performance. Double-speed chains feature high conveying speed, large load capacity, and stable and reliable operation, meeting the demands of modern production for efficient and continuous conveying. They are widely used in automated production lines in industries such as automobile manufacturing, home appliance production, and food processing.

[0004] However, in the actual operation of a double-speed chain conveyor line, installation, use, and maintenance are inevitable stages, which often require disassembly and reassembly of the double-speed chain. For example, during the equipment installation and commissioning phase, the length and position of the double-speed chain need to be precisely adjusted according to the actual conditions of the production site and process requirements. After long-term operation, the double-speed chain may experience wear and stretching, affecting conveying accuracy and stability, at which point repair or replacement of the double-speed chain is necessary. In addition, when the production line is upgraded or the product is changed, corresponding adjustments to the double-speed chain may also be required.

[0005] Currently, most chain tensioners on the market are designed for conventional chains, and their size and structural characteristics limit their applicability. For certain high-speed chains already installed on equipment or production lines, the small wheel spacing of these chains makes existing chain tensioners inadequate for operational requirements. For example, the 08BS high-speed chain has a compact wheel spacing design, which prevents the grippers of conventional chain tensioners from accurately and stably clamping the chain links, thus hindering effective tensioning and disassembly operations. When it's necessary to disassemble or assemble a 08BS high-speed chain already installed on equipment or conveyor lines, on-site workers often have to resort to temporary and rudimentary methods, such as using ropes or wires to pull the chain together. However, this method has many drawbacks: Firstly, ropes or wires have a certain degree of toughness, making it difficult to precisely control the magnitude and direction of the pulling force during the chain-linking process. This results in an unsatisfactory pulling effect, preventing the chain from reaching the required spacing for disassembly and assembly, thus increasing the difficulty and risk of disassembly and assembly. Secondly, this operation is not only time-consuming and labor-intensive, but also usually requires two people to complete, severely impacting work efficiency and increasing labor costs. Furthermore, using ropes or wires to pull the chain may damage it, affecting its lifespan and conveying performance.

[0006] Therefore, the inventors dedicated themselves to designing a tensioner to solve the above problems. Utility Model Content

[0007] The purpose of this utility model is to provide a chain tensioner for a double-speed chain, which has a reasonable structure and is easy to operate. It can effectively tension double-speed chains with a small wheel spacing, so as to achieve efficient assembly and disassembly of double-speed chains with special structures.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0009] A chain tensioner for a speed-multiplying chain includes an adjusting plate, an adjusting screw, and a fixing member. The adjusting plate has two pairs of claws hinged at intervals, each claw being flared in a V-shape. The same pair of claws are symmetrically arranged to clamp the outer rollers on the same side of two chain links that need to be loosened. The adjusting screw is threadedly connected to the adjusting plate to rotate around its own axis under the action of external force. The fixing member is located directly below the adjusting plate. The adjusting screw passes through the adjusting plate and is fixedly connected to the fixing member. The two pairs of claws are limited to pass through the fixing member and extend outside the fixing member to form clamping ends.

[0010] As an improvement of the chain tensioner of the speed-doubled chain of this utility model, all the said claws are distributed in a circle around the adjusting screw at intervals, and the adjusting screw is located on the opening side of each of the said claws.

[0011] As an improvement of the chain tensioner of the double-speed chain of this utility model, each of the claws has a groove on the inner wall of its clamping end for matching with the outer roller on the chain, and a handle is fixedly inserted through the top of the adjusting screw in a radial direction to form a cross shape, and the handle is located directly above the adjusting plate.

[0012] As an improvement of the chain tensioner of the double-speed chain of this utility model, the top ends of two different pairs of claws on the same side are hinged to the adjustment plate through the same rotating shaft.

[0013] As an improvement of the chain tensioner of the speed-doubled chain of this utility model, the two corresponding sides of the adjustment plate are respectively provided with second tension screws for adjusting the tension of the two rotating shafts, and the two second tension screws are located between the two pairs of claws.

[0014] As an improvement of the chain tensioner of the double-speed chain of this utility model, the adjusting plate is provided with two pairs of grooves, the tops of the two pairs of claws are respectively located in the two pairs of grooves, and the rotating shaft passes through the sidewalls of two different pairs of grooves on the same side.

[0015] As an improvement of the chain tensioner of the speed-doubled chain of this utility model, the fixing member is provided with two pairs of limiting holes, and the two pairs of claws are correspondingly limited and pass through the two pairs of limiting holes.

[0016] As an improvement of the chain tensioner of the double-speed chain of this utility model, the fixing member includes a fixing plate and two locking pins. The fixing plate is provided with two pairs of limiting through grooves, and the two locking pins pass through the side walls of the two corresponding pairs of limiting through grooves to form two pairs of limiting holes.

[0017] As an improvement of the chain tensioner of the speed-doubled chain of this utility model, the two corresponding sides of the fixed plate are respectively provided with first tensioning screws for adjusting the tightness of the two locking pins, and the two first tensioning screws are located between the two pairs of locking claws.

[0018] Compared with existing technologies, the chain tensioner of this utility model for a double-speed chain uses two pairs of claws hinged at intervals on an adjusting plate to precisely and stably clamp the front and rear outer rollers on the two chain links that need to be loosened. The rotation of the adjusting screw drives the adjusting plate to rise and fall, and with the limiting effect of the fixing component, the clamping angle of the two pairs of claws is adjusted synchronously, thereby efficiently assembling and disassembling the double-speed chain. The entire tensioner has a reasonable structure and is easy to operate. In particular, it can effectively tension double-speed chains with special structures and small wheel spacing, so as to achieve efficient assembly and disassembly of double-speed chains with special structures. Attached image description:

[0019] Figure 1 This is a three-dimensional enlarged view of the chain tensioner for the speed-multiplying chain of this utility model;

[0020] Figure 2 This is another three-dimensional enlarged view of the chain tensioner for the speed-multiplying chain of this utility model;

[0021] Figure 3 This is a cross-sectional enlarged view of the chain tensioner of the speed-doubler chain of this utility model at the adjusting screw.

[0022] Figure 4 This is a cross-sectional enlarged view of the chain tensioner of the speed-doubler chain of this utility model at the same pair of claws;

[0023] Figure 5 This is an exploded perspective view of the chain tensioner for the speed-multiplying chain of this utility model;

[0024] Figure 6 This is a perspective view of the chain tensioner of the speed-doubled chain of this utility model, which clamps two links on the speed-doubled chain.

[0025] Figure 7 yes Figure 6 Enlarged view of point A in the middle.

[0026] Illustration:

[0027] 1. Adjusting plate; 11. Rotating shaft; 12. Groove; 13. Screw hole; 2. Adjusting screw; 21. Fixing screw; 3. Claw; 31. Slot; 4. Handle; 5. Fixing component; 51. Limiting hole; 6. Locking pin; 7. Fixing plate; 71. Limiting through groove; 8. First tensioning screw; 81. First tensioning hole; 82. Second tensioning screw; 83. Second tensioning hole; 9. Speed-reducing chain; 91. Outer roller; 92. Inner roller. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below with reference to the accompanying drawings. The drawings are for reference and illustration only and do not constitute a limitation on the scope of patent protection of this utility model.

[0029] Reference Figures 1 to 7 A chain tensioner for a speed-multiplying chain includes an adjusting plate 1, an adjusting screw 2, and a fixing member 5. Two pairs of claws 3 are hinged at intervals on the adjusting plate 1. Each claw 3 is flared V-shaped (i.e., the opening of a single claw 3 is obtuse-angled V-shaped). The same pair of claws 3 are symmetrically arranged to clamp the outer rollers 91 on the same side of the two chain links that need to be loosened. The adjusting screw 2 is threadedly connected to the adjusting plate 1 to rotate around its own axis under the action of external force. The fixing member 5 is located directly below the adjusting plate 1. The adjusting screw 2 passes through the adjusting plate 1 and is fixedly connected to the fixing member 5. The two pairs of claws 3 are limited to pass through the fixing member 5 and extend out of the fixing member 5 to form clamping ends.

[0030] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The adjusting plate 1 is provided with two pairs of grooves 12 and is in the shape of a "king" character as a whole. Specifically, the two grooves 12 at the front end of the adjusting plate 1 form one pair, and the two grooves 12 at the rear end of the adjusting plate 1 form the other pair. The two grooves 12 in the same pair are symmetrically arranged on the left and right side walls of the adjusting plate 1 and penetrate through the top and bottom walls of the adjusting plate 1. The tops of the two pairs of claws 3 are respectively located in the front and rear pairs of grooves 12 (that is: the tops of the pair of claws 3 at the front end are respectively located in the pair of grooves 12 at the front end, and the tops of the pair of claws 3 at the rear end are respectively located in the pair of grooves 12 at the rear end). The tops of the two claws 3 in different pairs on the same side are hinged to the adjusting plate 1 through the same rotating shaft 11. That is: the tops of the two claws 3 in different pairs (the left front side and the left rear side) on the left side are hinged to the left end of the adjusting plate 1 through the rotating shaft 11 at the left end, and the tops of the two claws 3 in different pairs (the right front side and the right rear side) on the right side are hinged to the right end of the adjusting plate 1 through the rotating shaft 11 at the right end. The rotating shaft 11 on the left side passes through the side walls of the two grooves 12 in different pairs on the left side and the upper ends of the two claws 3 at the left end, and the rotating shaft 11 on the right side passes through the side walls of the two grooves 12 in different pairs on the right side and the upper ends of the two claws 3 at the right end. In order to adjust the tightness of the two rotating shafts 11, the two corresponding sides (that is: the left and right corresponding sides) of the adjusting plate 1 are respectively provided with second tightening holes 83, and a second tightening screw 82 is threadedly connected in each second tightening hole 83. The two second tightening screws 82 respectively press against the two rotating shafts 11 to adjust the tightness of the two rotating shafts 11. The two second tightening screws 82 are located between the front and rear pairs of claws 3, and a screw hole 13 penetrates through the center of the top of the adjusting plate 1.

[0031] Refer to Figure 1 and Figure 2 As shown in

[0032] Refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 5, the adjusting screw rod 2 is rod-shaped and vertically arranged. The adjusting screw rod 2 is located on the opening side of each claw 3. The middle section of the adjusting screw rod 2 has threads. The threaded section of the adjusting screw rod 2 passes through the screw hole 13 of the adjusting plate 1. The top end of the adjusting screw rod 2 is located outside the adjusting plate 1. A handle 4 is fixedly penetrated through the top end of the adjusting screw rod 2 along its radial direction to form a cross shape (the left and right sides of the handle 4 extend outside the adjusting screw rod 2). The handle 4 is located directly above the adjusting plate 1.

[0033] Refer to Figure 1 , Figure 2 , Figure 3 and Figure 5 , two pairs of limiting holes 51 are provided on the fixing member 5. The two pairs of limiting holes 51 are distributed at the front and rear ends of the fixing member 5. The front and rear pairs of claws 3 are respectively and correspondingly limited and penetrated through the front and rear pairs of limiting holes 51. Specifically, the fixing member 5 includes a fixing plate 7 and two pins 6. Two pairs of limiting through slots 71 are provided at the front and rear ends of the fixing plate 7. The fixing plate 7 is integrally in the shape of a "king". Specifically, the two limiting through slots 71 at the front end of the fixing plate 7 are one pair, and the two limiting through slots 71 at the rear end of the fixing plate 7 are the other pair. The two limiting through slots 71 in the same pair are symmetrically arranged on the left and right side walls of the fixing plate 7 and penetrate through the top wall and the bottom wall of the fixing plate 7. The two pins 6 respectively penetrate through the side walls of two different pairs of limiting through slots 71 on the two corresponding sides to form two pairs of limiting holes 51. That is: the left pin 6 penetrates through the side walls of the front and rear two limiting through slots 71 on the left side to form the two limiting holes 51 on the left side, and the right pin 6 penetrates through the side walls of the front and rear two limiting through slots 71 on the right side to form the two limiting holes 51 on the right side. The inclined parts at the upper ends of the two pairs of claws 3 are respectively located in the front and rear pairs of limiting holes 51 (that is: the inclined parts at the upper ends of the front pair of claws 3 are respectively located in the front pair of limiting holes 51, and the inclined parts at the upper ends of the rear pair of claws 3 are respectively located in the rear pair of limiting holes 51). In order to adjust the tightness of the two pins 6, first tightening holes 81 are respectively provided on the two corresponding sides of the fixing plate 7 (that is: the left and right corresponding sides). A first tightening screw 8 is threadedly connected in each first tightening hole 81. The two first tightening screws 8 respectively press against the two pins 6 to adjust the tightness of the two pins 6. The two first tightening screws 8 are located between the front and rear pairs of claws 3. A fixing hole is provided at the center of the fixing plate 7. The bottom end of the adjusting screw rod 2 passes through the fixing hole of the fixing plate 7 and is fixedly connected to the adjusting plate 1 through a fixing screw 21.

[0034] Refer to Figures 1 to 7 , the usage method of the chain tensioner of the double-speed chain of the present utility model is as follows:

[0035] Manually turn handle 4. Adjusting screw 2 rotates with handle 4, causing adjusting plate 1 to rise and fall. Under the limiting action of fixed plate 7, the two pairs of pawls 3 adjust the clamping angle so that the front outer rollers 91 of the two links on the double-speed chain 9 that need to be loosened are located between the front pair of pawls 3, and the rear outer rollers 91 of the two links on the double-speed chain 9 that need to be loosened are located between the rear pair of pawls 3. Turn handle 4 again to reduce the clamping angle of the same pair of pawls 3, so that the front and rear outer rollers 91 of the two links can be clamped together. Since the inner rollers 91 at both ends of the same link are coaxially connected by the same outer roller 92, adjusting the clamping angle between the two pairs of pawls 3 can quickly tighten the chain and efficiently install and remove the double-speed chain 9.

[0036] In use, the distance between the fixed plate 7 and the adjusting plate 1 is adjusted by adjusting the screw 2. When it is necessary to tighten the double speed chain 9, the two pairs of claws 3 are simultaneously pulled towards the center by rotating the adjusting screw 2. This allows the tensioner to be easily installed and removed by a single person, greatly improving work efficiency.

[0037] This utility model discloses a chain tensioner for a double-speed chain. By hinged two pairs of claws 3 at intervals on an adjusting plate, it accurately and stably clamps the outer rollers 91 on the front and rear sides of the two chain links that need to be loosened on the double-speed chain 9. The rotation of the adjusting screw 2 drives the adjusting plate 1 to rise and fall. With the limiting effect of the fixing part 5, the clamping angle of the two pairs of claws 3 is adjusted synchronously, thereby efficiently assembling and disassembling the double-speed chain 9. The entire tensioner has a reasonable structure and is easy to operate. In particular, it can effectively tension the chain of the double-speed chain 9 with a special structure where the wheel spacing is small, so as to achieve efficient assembly and disassembly of the double-speed chain 9 with a special structure.

[0038] The chain tensioner for the speed-multiplying chain of this invention has the following beneficial technical effects:

[0039] 1. In this utility model tensioner, the working surfaces of the two pairs of claws 3 are semi-circular arc surfaces, which allow them to contact the outer rollers 91 on both sides of the speed-multiplying chain 9 with a larger area, thus preventing the tensioner from falling off during operation.

[0040] 2. The tensioner of this utility model can make the force on the outer rollers 91 on both sides of the speed-multiplying chain 9 uniform during use, which can better protect the performance of the chain.

[0041] 3. This utility model can quickly disassemble and assemble the double speed chain 9, especially the 08BS type double speed chain 9, which greatly improves work efficiency and reduces equipment maintenance costs.

[0042] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of protection of the present utility model. Therefore, any equivalent changes made in accordance with the scope of the patent application of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A chain tensioner of a multiple speed chain, comprising an adjusting plate, an adjusting screw and a fixing member, characterized in that, The adjusting plate has two pairs of jaws hinged at intervals. Each jaw is flared V-shaped. The same pair of jaws is symmetrically arranged to clamp the outer rollers on the same side of the two chain links that need to be released. The adjusting screw is threaded to the adjusting plate to rotate around its own axis under the action of external force. The fixing member is located directly below the adjusting plate. The adjusting screw passes through the adjusting plate and is fixedly connected to the fixing member. The two pairs of jaws are limited to pass through the fixing member and extend outside the fixing member to form clamping ends.

2. The chain tensioner of claim 1, wherein All the jaws are arranged in a circle around the adjusting screw, with the adjusting screw located on the open side of each jaw.

3. The chain tensioner of claim 1, wherein Each of the jaws has a groove on the inner wall of its clamping end for matching the outer roller on the chain. The top of the adjusting screw is fixedly fitted with a handle in a cross shape along its radial direction. The handle is located directly above the adjusting plate.

4. The chain tensioner of claim 1, wherein The tips of two different pairs of chucks on the same side are hinged to the adjustment plate via the same pivot.

5. The chain tensioner of claim 4, wherein the spring is a wave spring. The two corresponding sides of the adjusting plate are respectively provided with second tightening screws for adjusting the tightness of the two rotating shafts, and the two second tightening screws are located between the two pairs of jaws.

6. The chain tensioner of claim 5, wherein, The adjustment plate is provided with two pairs of grooves, and the tops of the two pairs of claws are respectively located in the two pairs of grooves. The rotating shaft passes through the sidewalls of two different pairs of grooves on the same side.

7. The chain tensioner of claim 1, wherein The fastener is provided with two pairs of limiting holes, and the two pairs of claws pass through the two pairs of limiting holes in a one-to-one correspondence.

8. The chain tensioner of claim 7, wherein, The fastener includes a fixing plate and two locking pins. The fixing plate is provided with two pairs of limiting slots, and the two locking pins pass through the side walls of the two corresponding pairs of limiting slots to form two pairs of limiting holes.

9. The chain tensioner of claim 8, wherein, The fixing plate is provided with first tightening screws on two corresponding sides for adjusting the tightness of the two locking pins, and the two first tightening screws are located between the two pairs of locking claws.

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