Stretching correction device for plastic-coated compensation chain production

Abstract

The utility model relates to the technical field of elevator accessories, in particular to a stretching proofreading device for production of a plastic-coated compensation chain, which comprises an operating table, supporting columns are mounted at four corners of the bottom of the operating table, a display screen is mounted on one side of the upper end face of the operating table, and a tension sensor is mounted on the operating table on one side of the display screen. A communication data line is installed on the other side of the tension sensor, a gearbox is installed on the other side of the upper end face of the operation table, and a servo motor is installed at the position, corresponding to the gearbox, of the lower end face of the operation table; the stretching and correcting device comprises an operation table, a correcting assembly and a correcting assembly, the correcting assembly is arranged on the operation table, and the correcting assembly is used for conducting stretching and correcting on a plastic-coated compensation chain to be corrected. The problems that in the prior art, in the aspect of stretching correction for plastic-coated compensation chain production, efficiency is low, precision is insufficient, the fixing mode is not flexible, real-time monitoring is lacked, and safety is insufficient are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to elevator fittings technical field especially relates to a kind of tensile proofreading devices for plastic-coated compensating chain production. BACKGROUND

[0002] In the manufacturing process of elevator balance compensating chain and other chain products, the tensile strength of the chain is a key indicator to ensure its safety performance and service life. The traditional tensile proofreading device often has problems such as complex operation, insufficient precision, and cannot meet the urgent needs of modern industry for high-quality and high-efficiency production.

[0003] In the prior art, manual operation leads to low efficiency and insufficient precision, the fixed way is single and difficult to adapt to different specifications of chain, there is a lack of real-time tension monitoring and feedback mechanism, and the safety is insufficient during the operation of the equipment, and there is a lack of timely and effective emergency stop measures. These problems jointly restrict the quality and efficiency of plastic-coated compensating chain production, and the practicality is poor. Therefore, the utility model discloses a kind of tensile proofreading devices for plastic-coated compensating chain production to solve the problems of low efficiency, insufficient precision, inflexible fixed way, lack of real-time monitoring and insufficient safety in the tensile proofreading of plastic-coated compensating chain production in the prior art. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model aims to provide a kind of tensile proofreading devices for plastic-coated compensating chain production to solve the problems of low efficiency, insufficient precision, inflexible fixed way, lack of real-time monitoring and insufficient safety in the tensile proofreading of plastic-coated compensating chain production in the prior art.

[0005] Based on the above purpose, the utility model provides a kind of tensile proofreading devices for plastic-coated compensating chain production, comprising: an operating table, the bottom four corners of the operating table are provided with support columns, and the upper end surface of the operating table is provided with a display screen on one side, a tensile force sensor is installed on the operating table on one side of the display screen, and a communication data line is installed on the other side of the tensile force sensor;

[0006] A proofreading assembly is provided on the operating table, and the proofreading assembly is used for tensile proofreading of the plastic-coated compensating chain to be proofread.

[0007] A driving assembly is provided on one side of the upper end surface of the operating table, and the driving assembly is used to provide power output for the work of the proofreading assembly.

[0008] Preferably, the proofreading assembly comprises a gearbox, the other side of the upper end face of the operating table is provided with the gearbox, the lower end face of the operating table is provided with a servo motor corresponding to the position of the gearbox, the output end of the servo motor is sleeved with a belt, the other end of the belt is sleeved with a belt pulley, the belt pulley is installed at the receiving end of the gearbox, the output end of the gearbox is provided with an output winding wheel, and the operating table on one side of the gearbox is provided with an emergency stop button.

[0009] Preferably, the proofreading assembly comprises a first fixed plate, the first fixed plate is installed on one side of the upper end face of the operating table, and two groups of horizontal guide rods are symmetrically installed on the upper side of the first fixed plate. The side wall of the first fixed plate between the two groups of horizontal guide rods is provided with a mounting block, and the upper end face of the operating table on the outer side of the two groups of horizontal guide rods is respectively fixedly provided with a group of resistance limiting blocks. The other end of the upper end face of the operating table is provided with a second fixed plate.

[0010] Preferably, a sliding block is sleeved and installed on the two groups of horizontal guide rods, circular holes with the same diameter as the horizontal guide rods are formed in the two sides of the sliding block corresponding to the positions of the horizontal guide rods, a horizontal spring is sleeved and installed on the horizontal guide rod, one end of the horizontal spring is abutted and installed on the side wall of the sliding block, and the other end of the horizontal spring is abutted and installed on the side wall of the second fixed plate.

[0011] Preferably, the side wall of the mounting block is provided with a supporting strip at the bottom end, an arc-shaped groove is formed in the upper end face of the supporting strip, a bearing block is fixedly installed on the upper end face of the supporting strip, mounting round sleeves are installed on the two sides of the upper end face of the bearing block, a rotating column is inserted and installed in the mounting round sleeves, an arc-shaped ring is rotatably installed in the middle part of the rotating column, a threaded hole is formed in the top end of the arc-shaped ring, a threaded column is installed in the threaded hole, and threaded sleeves are installed at both ends of the threaded column.

[0012] Preferably, the installation block is installed on the side wall of the mounting block on the upper part of the supporting strip, a locking ring is installed on the installation block, a switch ring is slidably and clampedly installed in the locking ring, a pressing spring is installed in the locking ring, one end of the pressing spring is abutted and installed on the bottom wall of the locking ring, the other end of the pressing spring is abutted and installed on the side wall of the switch ring, and the arc-shaped wall surface of the locking ring is provided with a switch ring.

[0013] Preferably, the locking ring is sleeved with a chain ring, the chain ring is wrapped with a composite outer layer, the outer wall surface of the composite outer layer is installed on the inner wall of the two sets of arc-shaped rings, the same mounting square is installed on the sliding block side wall of the other end of the chain ring and the composite outer layer, the same locking ring is installed on the sliding block side wall of the other end of the chain ring and the composite outer layer, the same switch ring is installed on the sliding block side wall of the other end of the chain ring and the composite outer layer, the same operation cylinder is installed on the sliding block side wall of the other end of the chain ring and the composite outer layer, the same bearing block is installed on the supporting strip corresponding to the position of the composite outer layer and the chain ring, the same mounting round sleeve is installed on the supporting strip corresponding to the position of the composite outer layer and the chain ring, the same rotating column is installed on the supporting strip corresponding to the position of the composite outer layer and the chain ring, the same arc-shaped ring is installed on the supporting strip corresponding to the position of the composite outer layer and the chain ring, the same screw column is installed on the supporting strip corresponding to the position of the composite outer layer and the chain ring, the same screw sleeve is installed on the supporting strip corresponding to the position of the composite outer layer and the chain ring, and the bearing block is slidably installed on one end of the sliding block, and the bearing block is fixedly installed on one end of the sliding block.

[0014] Preferably, a connecting block is installed on the middle side wall of the other end of the sliding block, a pull rope is installed on the connecting block, a through groove is formed on the second fixed plate corresponding to the positions of the connecting block and the pull rope in the horizontal direction, a directional wheel is installed in the through groove, and the second fixed plate is also provided with the through groove at one end of the gearbox, and the pull rope is connected with the output winding wheel through the two sets of directional wheels.

[0015] The utility model discloses beneficial effects:

[0016] Through the setting of the calibration assembly, including the sliding block, the horizontal guide rod, the horizontal spring, the bearing block, the installation round sleeve, the rotating column, the arc ring, the stud, the screw sleeve and other components, the plastic-coated compensation chain to be calibrated can be stably and accurately stretched and calibrated. The sliding of the sliding block on the horizontal guide rod matches the elastic force of the horizontal spring, ensuring the stability and uniformity of the chain during stretching, and improving the calibration accuracy. The arc ring is connected with the installation round sleeve on the bearing block through the stud and the screw sleeve, so that the arc ring can be flexibly adjusted according to the specifications of the chain to adapt to plastic-coated compensation chains of different sizes and types. This design enhances the versatility and practicality of the device. Through the cooperation of the locking ring, the switch ring and the operation cylinder, the chain can be conveniently fixed and released, simplifying the operation process and improving the work efficiency. At the same time, the setting of the directional wheel ensures the smooth movement of the pull rope during stretching, avoiding jamming or wear. The cooperation of the servo motor and the gearbox realizes the automatic control of chain stretching. The display screen and the tension sensor are set, so that the operator can monitor the tension and state in real time during the stretching process, ensuring the safety and reliability of the stretching process. The provision of the emergency stop button further enhances the safety of the device. The whole device has a compact structure, and the components are connected closely and reasonably, so that the device is more stable and reliable during operation. At the same time, the design of each component facilitates disassembly and maintenance, reducing maintenance cost and time. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0018] Figure 1 It is a first perspective view of the present application.

[0019] Figure 2 It is a second perspective view of the present application.

[0020] Figure 3 It is a third perspective view of the present application. Figure 1 It is an enlarged structure diagram of A in the present application.

[0021] Figure 4 It is an enlarged structure diagram of B in the present application. Figure 1

[0022] Figure 5 It is a sectional plane structure diagram of the locking ring of the present application.

[0023] Figure 6 It is a sectional plane structure diagram of the chain ring and the composite outer layer of the present application.​

[0024] Marked as:

[0025] 1, operating table; 2, support column; 3, display screen; 4, tension sensor; 5, servo motor; 6, pulley; 7, belt; 8, gearbox; 9, output winding wheel; 10, pull rope; 11, resistance limit block; 12, first fixed plate; 13, horizontal guide rod; 14, emergency stop button; 15, supporting strip; 16, sliding block; 17, mounting block; 18, mounting block; 19, locking ring; 20, switch ring; 21, operating cylinder; 22, composite outer layer; 23, chain ring; 24, bearing block; 25, mounting round sleeve; 26, rotating column; 27, arc ring; 28, stud; 29, screw; 30, second fixed plate; 31, horizontal spring; 32, connecting block; 33, through groove; 34, directional wheel; 35, extrusion spring. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application will be further described in detail below with specific examples.

[0027] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present application should be understood as the usual meaning understood by those skilled in the art to which the present application belongs. The "first", "second" and similar words used in the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Include" or "contain" and similar words mean that the elements or objects before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connection" or "connected" and similar words are not limited to physical or mechanical connection, but can include electrical connection, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to represent relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0028] The present application provides a Figures 1 to 6The illustrated one is the production of the plastic compensating chain drawing alignment device, including: operation platform 1, the bottom four corners of operation platform 1 are installed with support column 2, and the upper end surface of operation platform 1 is installed with display screen 3 on one side, the display screen 3 is installed with tension sensor 4 on one side of operation platform 1, and the other side of tension sensor 4 is installed with communication data line; alignment assembly, the alignment assembly is arranged on operation platform 1, and the alignment assembly is used for stretching alignment of the plastic compensating chain to be aligned; driving assembly, the driving assembly is arranged on one side of the upper end surface of operation platform 1, and the driving assembly is used for providing power output for the alignment assembly work, the other side of the upper end surface of operation platform 1 is installed with gearbox 8, the lower end surface of operation platform 1 is installed with servo motor 5 at the position corresponding to gearbox 8, the output end of servo motor 5 is sleeved and installed with belt 7, the other end of belt 7 is sleeved with pulley 6, pulley 6 is installed at the receiving end of gearbox 8, and the output end of gearbox 8 is installed with output winding wheel 9, and emergency stop button 14 is installed on one side of operation platform 1 of gearbox 8, through the setting of alignment assembly, including sliding block 16, horizontal guide rod 13, horizontal spring 31, bearing block 24, installation round sleeve 25, rotating column 26, arc ring 27, stud 28, screw sleeve 29 and other components, the plastic compensating chain to be aligned can be stably and accurately stretched. The sliding cooperation of sliding block 16 on horizontal guide rod 13 and the elastic force of horizontal spring 31 ensure the stability and uniformity of the chain during stretching, and improve the alignment accuracy. The arc ring 27 is connected with the installation round sleeve 25 on the bearing block 24 through the stud 28 and the screw sleeve 29, so that the arc ring 27 can be flexibly adjusted according to the specifications of the chain to adapt to different sizes and types of plastic compensating chain. This design enhances the versatility and practicality of the device. Through the cooperation of locking ring 19, switch ring 20 and operation cylinder 21, the chain can be conveniently fixed and released, simplifying the operation process and improving the work efficiency. At the same time, the setting of directional wheel 34 ensures the smooth movement of pull rope 10 during stretching, avoiding jamming or wear. The cooperation of servo motor 5 and gearbox 8 realizes the automatic control of chain stretching. The setting of display screen 3 and tension sensor 4 enables the operator to monitor the tension and state of the stretching process in real time, ensuring the safety and reliability of the stretching process. The provision of emergency stop button 14 further enhances the safety of the device. The whole device structure is compact, the connection between components is tight and reasonable, so that the device is more stable and reliable during operation. At the same time, the design of each component is convenient for disassembly and maintenance, reducing the maintenance cost and time.

[0029] Further, in the present example, as Figure 2 、 Figure 3 and Figure 4As shown, the calibration assembly includes a first fixing plate 12, which is installed on one side of the upper end face of the operating table 1. Two sets of symmetrical horizontal guide rods 13 are installed on the upper side of the first fixing plate 12. An installation block 17 is installed on the side wall of the first fixing plate 12 between the two sets of horizontal guide rods 13. A set of abutment and limiting blocks 11 are fixedly installed on the upper end face of the operating table 1 on the outer side of the two sets of horizontal guide rods 13. A second fixing plate 30 is installed on the other end of the upper end face of the operating table 1. A sliding block 16 is slidably sleeved on both sets of horizontal guide rods 13. The sliding block 16 has openings on both sides corresponding to the positions of the horizontal guide rods 13. A circular hole with the same diameter as the horizontal guide rod 13 is provided, and a horizontal spring 31 is fitted onto the horizontal guide rod 13. One end of the horizontal spring 31 abuts against the side wall of the sliding block 16, and the other end of the horizontal spring 31 abuts against the side wall of the second fixed plate 30. A support strip 15 is installed at the bottom end of the side wall of the mounting block 17. An arc-shaped groove is formed on the upper end face of the support strip 15, and a bearing block 24 is fixedly installed on the upper end face of the support strip 15. A mounting sleeve 25 is installed on both sides of the upper end face of the bearing block 24. A rotating column 26 is inserted into the mounting sleeve 25, and an arc-shaped groove is rotatably installed in the middle of the rotating column 26. The ring 27 has a threaded hole at its top, into which a stud 28 is installed. Sleeves 29 are installed at both ends of the stud 28. An mounting block 18 is installed on the side wall of the mounting block 17 on the upper part of the support strip 15. A locking ring 19 is installed on the mounting block 18. A switch ring 20 is slidably engaged within the locking ring 19. A compression spring 35 is installed within the locking ring 19. One end of the compression spring 35 abuts against the bottom wall of the locking ring 19, and the other end abuts against the side wall of the switch ring 20. The switch ring 20 is installed on the arc-shaped wall of the locking ring 19. A chain link 23 is mounted on the upper sleeve. A composite outer layer 22 is mounted on the chain link 23, and the outer wall of the composite outer layer 22 is mounted on the inner wall of two sets of arc-shaped rings 27. Identical mounting blocks 18 are mounted on the side walls of the sliding blocks 16 at the other ends of the chain link 23 and the composite outer layer 22. Identical locking rings 19 are mounted on the side walls of the sliding blocks 16 at the other ends of the chain link 23 and the composite outer layer 22. Identical switching rings 20 are mounted on the side walls of the sliding blocks 16 at the other ends of the chain link 23 and the composite outer layer 22. Identical operating cylinders 21 are mounted on the side walls of the sliding blocks 16 at the other ends of the chain link 23 and the composite outer layer 22. 。And the same mounting block 24 is also installed on the carrier strip 15 at the position corresponding to the composite outer layer 22 and the chain link 23, the same mounting round sleeve 25 is also installed on the carrier strip 15 at the position corresponding to the composite outer layer 22 and the chain link 23, the same rotating column 26 is also installed on the carrier strip 15 at the position corresponding to the composite outer layer 22 and the chain link 23, the same arc ring 27 is also installed on the carrier strip 15 at the position corresponding to the composite outer layer 22 and the chain link 23, the same stud 28 is also installed on the carrier strip 15 at the position corresponding to the composite outer layer 22 and the chain link 23, the same nut 29 is also installed on the carrier strip 15 at the position corresponding to the composite outer layer 22 and the chain link 23, and the mounting block 24 is slidingly mounted on the carrier strip 15 at one end of the sliding block 16, and the mounting block 24 is fixedly mounted on the sliding block 16 at one end of the sliding block 16, a connecting block 32 is mounted on the middle side wall of the other end of the sliding block 16, a pull rope 10 is mounted on the connecting block 32, a through slot 33 is formed on the second fixed plate 30 at a position corresponding to the connecting block 32 and the pull rope 10 in terms of horizontal height, a directional wheel 34 is mounted in the through slot 33, and a through slot 33 is also formed on the second fixed plate 30 at one end of the gearbox 8, the pull rope 10 is connected to the output winding wheel 9 through two groups of directional wheels 34, and the operator first fixes one end of the plastic-coated compensation chain to be calibrated in the locking ring 19 and the switch ring 20 at one end of the sliding block 16, adjusts the position of the switch ring 20 through the operation of the cylindrical column 21, and ensures that the chain is firmly clamped. The other end of the chain also passes through the arc ring 27 on the carrier strip 15 and is fixed through the locking ring 19 and the switch ring 20 at the other end. According to the specifications of the chain, the operator adjusts the position of the stud 28 and the nut 29 in the mounting round sleeve 25 of the mounting block 24 to ensure that the arc ring 27 can closely fit the outer surface of the chain. The operator starts the servo motor 5, and the output end of the servo motor 5 drives the gearbox 8 to operate through the belt 7 and the belt pulley 6. The output end of the gearbox 8 drives the output winding wheel 9 to start rotating, and the output winding wheel 9 is connected to the connecting block 32 at one end of the sliding block 16 through the pull rope 10. With the rotation of the output winding wheel 9, the pull rope 10 is gradually tightened and guided through the directional wheel 34 in the through slot 33 on the second fixed plate 30, ensuring that the pull rope 10 can smoothly pull the sliding block 16 to slide along the horizontal guide rod 13. During the sliding process of the sliding block 16, the chain maintains a certain tension during stretching under the action of the elastic force of the horizontal spring 31, thereby realizing the stretching calibration of the chain. At the same time, the tension sensor 4 monitors the tension during the stretching process in real time and displays the data on the display screen 3 for the operator to monitor and adjust. When the chain reaches the predetermined stretching length or calibration effect, the operator stops the operation of the servo motor 5. Adjust the position of the switch ring 20 through the operation of the cylindrical column 21 to release the fixation of the chain, and then remove the calibrated chain. If it is necessary to continue to calibrate the next chain, the above steps are repeated.During the whole stretching alignment process, if the operator finds abnormal situation or needs to stop the equipment running in emergency, the emergency stop button 14 can be pressed immediately to cut off the power supply of the equipment, and the safety of the equipment and the operator is ensured. To sum up, the stretching alignment device for the plastic-coated compensation chain production realizes the accurate stretching alignment of the plastic-coated compensation chain through the working principles of the servo motor 5 driving, the gearbox 8 transmission, the sliding block 16 being pulled by the pull rope 10 and the horizontal spring 31 providing the tensioning force. Meanwhile, through the real-time monitoring of the tension sensor 4 and the safety protection of the emergency stop button 14, the reliability and safety of the equipment are ensured.

[0030] Those skilled in the art will understand that the above discussion of any embodiment is merely exemplary in nature and is not intended to suggest the scope of the present application (including the claims) is limited to these examples; under the present application, the above embodiments or technical features among different embodiments can also be combined, steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above, which are not provided in details for the sake of brevity.

[0031] The present application is intended to cover all such alternatives, modifications, and variations as fall within the broad scope of the appended claims. Accordingly, any and all such alternatives, modifications, equivalents, improvements and the like are intended to be encompassed by the present application.

Claims

1. A tension calibration device for producing plastic-coated compensating chains, characterized in that, include: The operating table (1) has support columns (2) installed at the four corners of its bottom, and a display screen (3) is installed on one side of the upper surface of the operating table (1). A tension sensor (4) is installed on one side of the display screen (3) on the operating table (1), and a data cable is installed on the other side of the tension sensor (4). A calibration component is provided on the operating table (1) and is used to perform tensile calibration on the plastic-coated compensation chain to be calibrated. A drive component is disposed on one side of the upper end face of the operating table (1), and the drive component is used to provide power output for the operation of the calibration component.

2. The tension calibration device for producing a plastic-coated compensating chain according to claim 1, characterized in that, The calibration assembly includes a gearbox (8). The gearbox (8) is installed on the other side of the upper surface of the operating table (1). A servo motor (5) is installed on the lower surface of the operating table (1) corresponding to the position of the gearbox (8). A belt (7) is fitted on the output end of the servo motor (5). A pulley (6) is fitted on the other end of the belt (7). The pulley (6) is installed on the receiving end of the gearbox (8). An output winding wheel (9) is installed on the output end of the gearbox (8). An emergency stop button (14) is installed on the operating table (1) on one side of the gearbox (8).

3. The tension calibration device for producing a plastic-coated compensating chain according to claim 2, characterized in that, The calibration assembly includes a first fixing plate (12), which is installed on one side of the upper end face of the operating table (1). Two sets of symmetrical horizontal guide rods (13) are installed on the upper side of the first fixing plate (12). An installation block (17) is installed on the side wall of the first fixing plate (12) between the two sets of horizontal guide rods (13). A set of blocking and limiting blocks (11) are fixedly installed on the upper end face of the operating table (1) on the outer side of the two sets of horizontal guide rods (13). A second fixing plate (30) is installed on the other end of the upper end face of the operating table (1).

4. The tension calibration device for producing a plastic-coated compensating chain according to claim 3, characterized in that, Sliding blocks (16) are slidably mounted on both sets of horizontal guide rods (13). The sliding blocks (16) have circular holes with the same diameter as the horizontal guide rods (13) on both sides corresponding to the positions of the horizontal guide rods (13). A horizontal spring (31) is mounted on the horizontal guide rods (13). One end of the horizontal spring (31) is abutted against the side wall of the sliding block (16), and the other end of the horizontal spring (31) is abutted against the side wall of the second fixing plate (30).

5. A tension calibration device for producing a plastic-coated compensating chain according to claim 4, characterized in that, A support strip (15) is installed at the bottom of the side wall of the mounting block (17). An arc-shaped groove is provided on the upper end face of the support strip (15), and a bearing block (24) is fixedly installed on the upper end face of the support strip (15). Mounting sleeves (25) are installed on both sides of the upper end face of the bearing block (24). A rotating column (26) is inserted into the mounting sleeve (25), and an arc-shaped ring (27) is rotatably installed in the middle of the rotating column (26). A threaded hole is provided at the top of the arc-shaped ring (27), and a stud (28) is installed in the threaded hole. Threaded sleeves (29) are installed at both ends of the stud (28).

6. The tension calibration device for producing a plastic-coated compensating chain according to claim 5, characterized in that, An installation block (18) is installed on the side wall of the mounting block (17) on the upper part of the support strip (15). A locking ring (19) is installed on the mounting block (18). A switch ring (20) is slidably engaged in the locking ring (19). A compression spring (35) is installed in the locking ring (19). One end of the compression spring (35) is abutted and installed on the bottom wall of the locking ring (19). The other end of the compression spring (35) is abutted and installed on the side wall of the switch ring (20). The switch ring (20) is installed on the arc-shaped wall of the locking ring (19).

7. A tension calibration device for producing a plastic-coated compensating chain according to claim 6, characterized in that, A chain link (23) is fitted onto the locking ring (19). A composite outer layer (22) is wrapped around the chain link (23), and the outer wall of the composite outer layer (22) is mounted on the inner wall of the two sets of arc-shaped rings (27). Identical mounting blocks (18) are installed on the side walls of the sliding blocks (16) at the other ends of the chain link (23) and the composite outer layer (22). Identical locking rings (19) are installed on the side walls of the sliding blocks (16) at the other ends of the chain link (23) and the composite outer layer (22). Identical switching rings (20) are installed on the side walls of the sliding blocks (16) at the other ends of the chain link (23) and the composite outer layer (22). Identical operating cylinders (21) are installed on the side walls of the sliding blocks (16) at the other ends of the chain link (23) and the composite outer layer (22). ， Furthermore, the same bearing block (24) is installed on the support bar (15) at the positions corresponding to the composite outer layer (22) and the chain link (23). The same mounting sleeve (25) is also installed on the support bar (15) at the positions corresponding to the composite outer layer (22) and the chain link (23). The same rotating column (26) is also installed on the support bar (15) at the positions corresponding to the composite outer layer (22) and the chain link (23). The same arc-shaped ring (27) is installed on the support bar (15), and the same stud (28) is also installed on the support bar (15) at the position corresponding to the composite outer layer (22) and the chain link (23). The same threaded sleeve (29) is also installed on the support bar (15) at the position corresponding to the composite outer layer (22) and the chain link (23). The bearing block (24) is located at one end of the sliding block (16) and is slidably installed with the support bar (15). The bearing block (24) is located at one end of the sliding block (16) and is fixedly installed on the sliding block (16).

8. A tension calibration device for producing a plastic-coated compensating chain according to claim 7, characterized in that, A connecting block (32) is installed on the middle side wall of the other end of the sliding block (16). A pull rope (10) is installed on the connecting block (32). A through groove (33) is opened on the second fixing plate (30) at the horizontal height corresponding to the position of the connecting block (32) and the pull rope (10). A directional wheel (34) is installed in the through groove (33). The second fixing plate (30) is also opened at one end of the gearbox (8). The pull rope (10) is connected to the output winding wheel (9) through two sets of directional wheels (34).

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