A chain shearing machine

Abstract

The present invention belongs to the technical field of shearing, and specifically is a chain shearing machine, comprising a chain plate, a shell is fixedly installed on the top of the chain plate, a telescopic cylinder is fixedly installed inside the shell, a push pin shaft is fixedly installed on the output shaft of the telescopic cylinder, a protrusion is fixedly and symmetrically installed on one side of the top of the chain plate, and a tripod is fixedly installed on the bottom of the chain plate; an inner support component is driven by a moving component to extend from the shell to the inside of the chain, and when moving, the inner support component slowly opens, and when it moves to a certain position, the inner support component is just placed inside the chain, and the opening distance of the inner support component is just the width distance inside the chain, and when the moving component moves, the limiting component also moves, and when the opening distance of the inner support component is just the width distance inside the chain, the limiting component just contacts the outer walls at both ends of the chain, and a complete limiting inner support system is formed by the cooperation of the three, thereby realizing the protection of the chain.

Description

Technical Field

[0001] The invention belongs to the technical field of shearing, in particular to a chain shearing machine. Background Art

[0002] Chain is a common mechanical transmission device, usually composed of metal links or rings, and is widely used in mechanical transmission, traction and other fields. There are many types of chains, which can be classified according to different uses and functions, such as transmission chains, conveyor chains, traction chains and special special chains.

[0003] A patent application with publication number CN117532064A discloses a chain shearing device, including a process in which steel is fed, the steel falls from an external conveying mechanism between an extrusion block and an extrusion sheet, and then the steel is clamped and fixed by the extrusion block and the extrusion sheet. Then the conveyor belt drives the chain plate to move, and the extrusion block and the extrusion sheet are connected to the chain plate, so that the steel can be driven to move in the direction of the cutting blade. Since the conveyor belt is annular, the chain plate will move in an annular motion, so that the subsequent steel can be continuously clamped and fixed, reducing the interval for feeding the steel, and facilitating improving the production efficiency of the chain.

[0004] In the current prior art, when cutting a roller chain on a bicycle, since both ends of the roller chain are hollow, if no assistance is provided to the two ends during cutting, the two ends of the roller chain are easily deformed during cutting and pinning, and cannot be used any more, resulting in waste.

[0005] To this end, the present invention provides a chain shearing machine. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: a chain shearing machine described in the present invention includes a chain plate, a shell is fixedly installed on the top of the chain plate, a telescopic cylinder is fixedly installed inside the shell, a push pin shaft is fixedly installed on the output shaft of the telescopic cylinder, a convex block is fixedly and symmetrically installed on one side of the top of the chain plate, a tripod is fixedly installed on the bottom of the chain plate, a pin holding box is fixedly installed on the inner wall of the chain plate, the center position of the pin holding box is on the same horizontal line as the center position of the push pin shaft, and a chain support unit is arranged inside the shell. The chain support unit is used to support the chain internally when the push pin shaft removes the chain pin, so as to prevent the push pin shaft from deforming both sides of the chain due to excessive force when removing the pin, and thus making it impossible to continue to use the chain, thereby playing a protective role. A pin fixing component is arranged inside the pin holding box, and the pin fixing component is used to fix the chain pin of the chain to be sheared, so as to prevent the center positions of the force-applying end of the push pin shaft and the chain pin from being on the same horizontal line when the chain is installed, thereby affecting the shearing effect, and also avoiding the phenomenon that the chain pin is damaged during shearing due to the different center positions;

[0008] The chain is placed on the convex block on the top of the chain plate, and one end of the chain pin on the chain is placed in the pin holding box. The pin fixing component in the pin holding box fixes the chain pin of the chain, and then the chain support unit in the shell supports both ends of the chain to prevent the push shaft from deforming on both sides of the chain due to excessive force when removing the pin. When the chain support unit finishes supporting both ends of the chain, the telescopic cylinder is controlled to start. While the telescopic cylinder is running, it drives the push shaft to push down the chain pin on the chain, so that the chain pin is removed from the chain, achieving the effect of shearing the chain. The center position of the pin holding box and the center position of the push pin shaft are on the same horizontal line, and cooperate with the pin fixing assembly in the pin holding box to ensure that the center positions of the chain pin and the push pin shaft can be kept on the same horizontal plane when removing the pin, thereby avoiding the phenomenon that the chain pin is damaged during shearing due to the difference in center positions. The chain support unit is used to limit the two ends of the chain and internally support them to prevent the push pin shaft from deforming on both sides of the chain due to excessive force when removing the pin, thereby protecting the chain. The movable adjustment of the chain support unit and the pin fixing assembly can make this device adaptable to chains of different specifications.

[0009] Preferably, the chain support unit can be divided into a moving component, an inner supporting component and a limiting component. The moving component is used to drive the inner supporting component to move toward the two ends of the chain to play a role of displacement. The inner supporting component is used to internally support the two ends of the chain to prevent the two ends of the chain from being pulled by the push shaft when the push shaft moves the chain pin on the chain, resulting in deformation problems, thereby playing the role of supporting the chain. The limiting component is used to fix the two ends of the chain to prevent the chain from shaking during shearing and causing the chain to run out of position, resulting in the center position of the chain pin being inconsistent with the center position of the force-applying end of the push shaft, thereby playing a role of limiting. When the chain is installed, When the two ends of the chain are limited by internal support, the moving component drives the internal support component to extend out from the shell and slide into the inside of the chain. When moving, the internal support component slowly opens. When it moves to a certain position, the moving component stops moving. At this time, the internal support component is just placed inside the chain, and the opening distance of the internal support component is just the width distance inside the chain. When the moving component is moving, the limiting component also moves. When the opening distance of the internal support component is just the width distance inside the chain, the limiting component just contacts the outer walls of both ends of the chain. Through the cooperation of the three, a complete limited internal support system is formed, thereby realizing the protection of the chain.

[0010] Preferably, the limiting assembly includes a pressure plate, which is placed inside the shell, and a shaft is symmetrically fixedly installed on the bottom of the pressure plate, and a rectangular box is provided at the bottom ends of the two shafts. Pressure springs are symmetrically fixedly installed between the pressure plate and the inner wall of the shell, and the two pressure springs are respectively arranged on the outside of the two shafts. The two rectangular boxes are located on both sides of the push shaft and the two rectangular boxes are respectively placed directly above the two protrusions. When the chain is installed, the pressure plate is pressed to drive the shaft to squeeze the pressure spring and move downward. During the movement, when the bottoms of the two rectangular boxes contact the upper surface of the chain, the two rectangular boxes will limit the two ends of the chain to prevent the chain from moving due to force when the pin is removed, thereby fixing the two ends of the chain.

[0011] Preferably, oil pipes are fixedly installed on the inner sides of the two rectangular boxes, slide grooves are opened on the inner walls of the two rectangular boxes, and squeeze plates are slidably connected to the inner walls of the two slide grooves. The bottom ends of the two shafts are respectively fixedly connected to the tops of the two squeeze plates, and the bottoms of the two squeeze plates are symmetrically fixedly installed with return springs, one ends of the two return springs are respectively fixedly connected to the inner walls of the two rectangular boxes, and oil outlets are opened in the middle position of one side of the inner wall of the two rectangular boxes. One end of the two oil pipes is respectively fixedly connected to the inner walls of the two oil outlets, and the two oil pipes are placed on one side of the sales shaft and one end of the two oil pipes is adjacent to the outer wall of the sales shaft. When the rectangular box is fixed in place, the moving assembly drives the inner support assembly to complete the inner support operation of the chain. The rear telescopic cylinder drives the sales pitch shaft to press down to remove the pin. When the sales pitch shaft is pressed down, the bottom of the two matrix boxes fit with the top of the two ends of the chain to form a limit. When the pressure plate continues to be pressed down, the shaft rod drives the extrusion plate through the slide groove to continue to squeeze the return spring in the matrix box and press it down. When the extrusion plate moves downward, the extrusion plate will squeeze the oil stored in the matrix box from the oil outlet through the displacement force, and finally flow out through the oil pipe. Through the position setting of the oil pipe, when the sales pitch shaft has not yet contacted the chain pin, the oil in the matrix box has flowed onto the chain pin through the oil pipe, and then cooperated with the downward pressure of the sales pitch shaft to push the pin, the oil in the oil pipe continues to flow out. When pushing the pin, the oil flowing out of the oil pipe can reduce the friction between the chain pin and the chain body, and play a lubricating role on the chain pin, which is convenient for removing the pin.

[0012] Preferably, control buttons are fixedly installed on the bottom of the two rectangular boxes. When the two rectangular boxes contact the outer ends of the chain, the moving assembly drives the internal support assembly to complete the internal support operation of the chain. At this time, the outer end of the chain will squeeze the control button at the bottom of the rectangular box, and the control button will control the operation of the telescopic cylinder. Through the setting of the two control buttons, while controlling the movement of the telescopic cylinder, it is also possible to simultaneously detect whether the surfaces of the two ends of the chain are horizontal. If not, it is determined that the two ends of this section of the chain have been deformed, and the telescopic cylinder will not operate, which plays a role in controlling the telescopic cylinder while also playing a detection role.

[0013] Preferably, the moving component includes a connecting rod, and there are two connecting rods. The two connecting rods are symmetrically fixedly connected to one side of the pressure plate, and a push block is fixedly installed on one side of the two connecting rods. Guide blocks are symmetrically arranged on the bottom of the inner wall of the shell, and the tops of the two guide blocks are slidably connected to displacement blocks. One side of the two push blocks is respectively slidably connected to the tops of the two displacement blocks. When the pressure plate is pressed down, the pressure plate drives the connecting rod to move downward. When the connecting rod moves downward, the push block on the connecting rod pushes the displacement block to move in the guide block, so that the internal support assembly in the guide block is moved out of the shell to the two ends of the chain, thereby playing a displacement role.

[0014] Preferably, the inner support assembly includes a transmission wheel, and there are two transmission wheels. The two transmission wheels are symmetrically arranged on one side of the inner wall of the shell and are rotatably connected to the inner wall of the shell. The teeth on the two transmission wheels are respectively meshed with the teeth on the two connecting rods. The inner walls of the two shift blocks are symmetrically and slidably connected with support blocks. A convex shaft is arranged between the two support blocks, and one end of the convex shaft is fixedly connected to one side of the transmission wheel. The inner wall of the shell is symmetrically provided with through grooves, and the outer walls of the two support blocks are slidably connected to the inner wall of the through groove. When the guide block is moved, the teeth on the bottom end of the connecting rod The teeth push the transmission wheel to rotate. When the transmission wheel rotates, the transmission wheel drives the cam to rotate between the two support blocks. When the cam rotates, the two support blocks can slide open in the guide block. When the two support blocks are driven by the guide block to enter the interior of the chain, the two support blocks open up and down to support the two ends of the chain. Through the pressure of the connecting rod, the support blocks can be opened while the guide blocks move. When the upper surface of the chain is contacted through the rectangular box, the two support blocks just complete the internal support of the two ends of the chain. Through the open support position of the support blocks and the downward pressing and fixing of the rectangular box, this device can be adapted to chains of different specifications.

[0015] Preferably, a plurality of return springs are arranged between the two support blocks. When the two support blocks are opened, the two support blocks pull the return springs to open. When the two support blocks no longer need internal support, the return springs drive the two support blocks to return to their original positions, thereby achieving a resetting effect.

[0016] Preferably, a pressing shaft is fixedly installed on the top of the pressing plate, and when the pressing plate is pressed, the pressing shaft is pressed to drive the pressing plate downward, thereby exerting a force.

[0017] Preferably, the pin fixing assembly includes a pin fixing block, and there are multiple pin fixing blocks, each of which is slidably connected to the inner wall of the pin holding box, and multiple limit shafts are fixedly installed on the inner wall of the pin holding box. The inner walls of the multiple pin fixing blocks are respectively slidably connected to the outer walls of the multiple limit shafts, and multiple pin fixing springs are fixedly installed between the outer sides of the multiple pin fixing blocks and the inner wall of the pin holding box. The multiple pin fixing springs are placed outside the multiple limit shafts. When the chain pin on the chain is placed in the pin holding box, the chain is pressed to make the chain pin squeeze the pin fixing block in the pin holding box to slide backward on the limit shaft. When it is pressed down to a certain position, the chain pin enters between a group of pin fixing blocks, and one end of the chain pin can be fixed in the pin holding box through the elastic force of the pin fixing spring, thereby playing the role of fixing the pin. It should be noted here that this fixing method is to determine the center position of the chain pin so that it is on the same horizontal plane as the center position of the pin pushing shaft.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. A chain shearing machine described in the present invention drives an inner support assembly to extend out from a shell and slide into the interior of a chain through a moving assembly. When moving, the inner support assembly slowly opens. When it moves to a certain position, the moving assembly stops moving. At this time, the inner support assembly is just placed inside the chain, and the opening distance of the inner support assembly is just the width distance inside the chain. When the moving assembly is moving, the limiting assembly also moves. When the opening distance of the inner support assembly is just the width distance inside the chain, the limiting assembly just contacts the outer walls at both ends of the chain. Through the cooperation of the three, a complete limiting inner support system is formed, thereby protecting the chain.

[0020] 2. The chain shearing machine described in the present invention forms a limit when the push shaft is pressed down, because the bottom of the two matrix boxes fit with the top of the two ends of the chain at this time. When the pressure plate continues to be pressed down, the shaft rod drives the extrusion plate to continue to squeeze the return spring in the matrix box through the slide groove and move downward. When the extrusion plate moves downward, the extrusion plate will squeeze the oil stored in the matrix box from the oil outlet through the displacement force, and finally flow out through the oil pipe. Through the position setting of the oil pipe, when the push shaft has not yet contacted the chain pin, the oil in the matrix box has flowed onto the chain pin through the oil pipe, and then cooperated with the downward pressure of the push shaft to push the chain, the oil in the oil pipe continues to flow out. When pushing the chain, the oil flowing out of the oil pipe can reduce the friction between the chain pin and the chain body, and play a lubricating role on the chain pin. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] Figure 1 It is the main figure of the present invention;

[0023] Figure 2 It is an overall diagram of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the push shaft in the present invention;

[0025] Figure 4 It is a structural schematic diagram of the fixing pin block in the present invention;

[0026] Figure 5 It is a structural schematic diagram of the guide block in the present invention;

[0027] Figure 6 It is a structural schematic diagram of the reset spring in the present invention;

[0028] Figure 7 It is a schematic diagram of the structure of the convex shaft in the present invention;

[0029] Figure 8 It is a structural schematic diagram of the support block in the present invention.

[0030] In the figure: 1. Housing; 2. Press shaft; 3. Chain plate; 4. Protrusion; 5. Pin holder box; 6. Rectangle box; 7. Telescopic cylinder; 8. Press plate; 9. Shaft; 10. Pressure spring; 11. Limit shaft; 12. Pin spring; 13. Control button; 14. Oil pipeline; 15. Return spring; 16. Extrusion plate; 17. Connecting rod; 18. Transmission wheel; 19. Guide block; 20. Shift block; 21. Push block; 22. Protruding shaft; 23. Support block; 24. Return spring; 25. Pin block; 26. Push shaft; 27. Through slot; 28. Tripod; 29. ​​Slide slot; 30. Oil outlet. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0032] like Figures 1 to 8 As shown, a chain shearing machine according to an embodiment of the present invention comprises a chain plate 3, a shell 1 is fixedly installed on the top of the chain plate 3, a telescopic cylinder 7 is fixedly installed inside the shell 1, a push pin shaft 26 is fixedly installed on the output shaft of the telescopic cylinder 7, a bump 4 is fixedly and symmetrically installed on one side of the top of the chain plate 3, a tripod 28 is fixedly installed on the bottom of the chain plate 3, a pin holding box 5 is fixedly installed on the inner wall of the chain plate 3, the center position of the pin holding box 5 is on the same horizontal line as the center position of the push pin shaft 26, and a chain support unit is arranged inside the shell 1, and the chain support unit is used when When the push pin shaft 26 removes the chain pin, the chain support unit supports the chain internally to prevent the push pin shaft 26 from deforming both sides of the chain due to excessive force when removing the pin, and thus making it impossible to continue to use the chain. The pin holding box 5 is provided with a pin fixing assembly inside, which is used to fix the chain pin of the chain to be sheared, to prevent the force-applying end of the push pin shaft 26 and the center position of the chain pin from being on the same horizontal line when the chain is installed, thereby affecting the shearing effect. At the same time, it can also avoid the phenomenon that the chain pin is damaged during shearing due to the different center positions.

[0033] In the prior art, when cutting the roller chain on a bicycle, since both ends of the roller chain are hollow, if no assistance is provided to both ends during cutting, the two ends of the roller chain are easily deformed during cutting and pinning, and cannot be used any more, resulting in waste.

[0034] The chain is placed on the protrusion 4 on the top of the chain plate 3, and one end of the chain pin on the chain is placed in the pin holding box 5. The pin fixing component in the pin holding box 5 fixes the chain pin of the chain. Then the chain support unit in the housing 1 supports both ends of the chain to prevent the push shaft 26 from deforming on both sides of the chain due to excessive force when removing the pin. When the chain support unit finishes supporting both ends of the chain, the telescopic cylinder 7 is controlled to start. While the telescopic cylinder 7 is running, it drives the push shaft 26 to push down the chain pin on the chain, so that the chain pin is removed from the chain, achieving the effect of shearing the chain. The position is on the same horizontal line as the center position of the push pin shaft 26, and cooperates with the fixed pin assembly in the pin holding box 5 to ensure that the center position of the chain pin and the push pin shaft 26 can be kept on the same horizontal plane when the pin is removed, avoiding the phenomenon that the chain pin is damaged during shearing due to the difference in the center position. The chain support unit is used to limit the two ends of the chain to prevent the push pin shaft 26 from deforming on both sides of the chain due to excessive force when the pin is removed, thereby protecting the chain. The movable adjustment of the chain support unit and the fixed pin assembly can make the device adapt to chains of different specifications. It should be noted that this chain is a roller chain.

[0035] like Figures 3 to 8 As shown, the chain support unit can be divided into a moving component, an inner support component and a limiting component. The moving component is used to drive the inner support component to move to the two ends of the chain to play a role of displacement. The inner support component is used to internally support the two ends of the chain to prevent the two ends of the chain from being pulled by the push shaft 26 when the push shaft 26 moves the chain pin on the chain, resulting in deformation problems, playing the role of supporting the chain. The limiting component is used to fix the two ends of the chain to prevent the chain from shaking during shearing and causing the chain to run out of position, resulting in the center position of the chain pin being inconsistent with the center position of the force-applying end of the push shaft 26, playing the role of limiting.

[0036] When the chain is installed, the two ends of the chain are limited and supported, and the moving component drives the internal support component to extend from the shell 1 and slide into the inside of the chain. When moving, the internal support component slowly opens. When it moves to a certain position, the moving component stops moving. At this time, the internal support component is just placed inside the chain, and the opening distance of the internal support component is just the width distance inside the chain. When the moving component is moving, the limiting component also moves. When the opening distance of the internal support component is just the width distance inside the chain, the limiting component just contacts the outer walls of the two ends of the chain. Through the cooperation of the three, a complete limited internal support system is formed, thereby protecting the chain.

[0037] like Figures 1 to 5As shown, the limit assembly includes a pressure plate 8, which is placed inside the housing 1, and a shaft 9 is symmetrically fixedly installed at the bottom of the pressure plate 8, and a rectangular box 6 is provided at the bottom ends of the two shafts 9, and a pressure spring 10 is symmetrically fixedly installed between the pressure plate 8 and the inner wall of the housing 1, and the two pressure springs 10 are respectively arranged on the outside of the two shafts 9, and the two rectangular boxes 6 are located on both sides of the push pin shaft 26 and the two rectangular boxes 6 are respectively placed directly above the two protrusions 4;

[0038] When the chain is installed, the pressing plate 8 drives the shaft rod 9 to squeeze the pressure spring 10 and move downward. During the movement, when the bottom of the two square boxes 6 touch the upper surface of the chain, the two square boxes 6 will limit the two ends of the chain to prevent the chain from moving due to force when the pin is removed, thereby fixing the two ends of the chain.

[0039] like Figures 3 to 6 As shown, the inner sides of the two rectangular boxes 6 are fixedly installed with oil delivery pipes 14, the inner walls of the two rectangular boxes 6 are provided with slide grooves 29, the inner walls of the two slide grooves 29 are slidably connected with squeeze plates 16, the bottom ends of the two shafts 9 are respectively fixedly connected to the tops of the two squeeze plates 16, the bottoms of the two squeeze plates 16 are symmetrically fixedly installed with return springs 15, one ends of the two return springs 15 are respectively fixedly connected to the inner walls of the two rectangular boxes 6, an oil outlet 30 is provided in the middle position of one side of the inner wall of the two rectangular boxes 6, one end of the two oil delivery pipes 14 is respectively fixedly connected to the inner walls of the two oil outlets 30, the two oil delivery pipes 14 are placed on one side of the sales promotion shaft 26, and one end of the two oil delivery pipes 14 is adjacent to the outer wall of the sales promotion shaft 26;

[0040] When the moment box 6 is fixed in place, the moving assembly drives the inner support assembly to complete the inner support operation of the chain, and then the telescopic cylinder 7 drives the push pin shaft 26 to press down and remove the pin. When the push pin shaft 26 is pressed down, the bottom of the two moment boxes 6 fits with the top of the two ends of the chain to form a limit. When the pressure plate 8 continues to be pressed down, the shaft 9 drives the squeeze plate 16 to continue to squeeze the return spring 15 through the slide groove 29 in the moment box 6 and press it down. When the squeeze plate 16 moves down, the squeeze plate 16 will squeeze the oil stored in the moment box 6 from the oil outlet 30 through the extrusion force. , and finally flows out through the oil pipe 14. Through the position setting of the oil pipe 14, when the push shaft 26 has not yet touched the chain pin, the oil in the matrix box 6 has flowed onto the chain pin through the oil pipe 14, and then with the downward pressure of the push shaft 26, the oil in the oil pipe 14 continues to flow out. When pushing the pin, the oil flowing out of the oil pipe 14 can reduce the friction between the chain pin and the chain body, play a lubricating role on the chain pin, and facilitate the removal of the pin. It should be noted here that the oil flow rate is calculated based on the inner diameter of the oil pipe 14, and the inner diameter specification of the oil pipe 14 needs to be actually measured.

[0041] like Figures 5 and 6 As shown, the bottom of the two rectangular boxes 6 are fixedly mounted with control buttons 13;

[0042] When the two square boxes 6 contact the outer ends of the chain, the moving assembly drives the inner support assembly to complete the inner support operation of the chain. At this time, the outer end of the chain will squeeze the control button 13 at the bottom of the square box 6, and the control button 13 will control the operation of the telescopic cylinder 7. Through the setting of the two control buttons 13, while controlling the movement of the telescopic cylinder 7, it is also possible to simultaneously detect whether the surfaces of the two ends of the chain are horizontal. If not, it is determined that the two ends of this section of the chain have been deformed, and the telescopic cylinder 7 will not operate, which plays a role in controlling the telescopic cylinder 7 while also playing a detection role.

[0043] like Figures 5 to 7 As shown, the moving assembly includes a connecting rod 17, and there are two connecting rods 17. The two connecting rods 17 are symmetrically fixedly connected to one side of the pressure plate 8. A push block 21 is fixedly installed on one side of the two connecting rods 17. A guide block 19 is symmetrically arranged at the bottom of the inner wall of the housing 1. The tops of the two guide blocks 19 are slidably connected to a displacement block 20. One side of the two push blocks 21 is slidably connected to the tops of the two displacement blocks 20 respectively.

[0044] When the pressure plate 8 is pressed down, the pressure plate 8 drives the connecting rod 17 to move downward. When the connecting rod 17 moves downward, the push block 21 on the connecting rod 17 pushes the shift block 20 to move in the guide block 19, so that the inner support assembly in the guide block 19 is moved out of the housing 1 to the two ends of the chain, playing a role of shifting.

[0045] like Figure 6 to Figure 7 As shown, the inner support assembly includes a transmission wheel 18, and there are two transmission wheels 18. The two transmission wheels 18 are symmetrically arranged on one side of the inner wall of the shell 1 and are rotatably connected to the inner wall of the shell 1. The teeth on the two transmission wheels 18 are respectively engaged with the teeth on the two connecting rods 17. The inner walls of the two displacement blocks 20 are symmetrically slidably connected with support blocks 23. A convex shaft 22 is arranged between the two support blocks 23. One end of the convex shaft 22 is fixedly connected to one side of the transmission wheel 18. The inner wall of the shell 1 is symmetrically provided with through grooves 27. The outer walls of the two support blocks 23 are slidably connected to the inner wall of the through groove 27.

[0046] When the guide block 19 is moved, the teeth on the bottom end of the connecting rod 17 push the transmission wheel 18 to rotate. When the transmission wheel 18 rotates, the transmission wheel 18 drives the cam 22 to rotate between the two support blocks 23. When the cam 22 rotates, the two support blocks 23 can slide and open in the guide block 19. When the two support blocks 23 are driven by the guide block 19 to enter the interior of the chain, the two support blocks 23 open up and down to support the two ends of the chain. Through the pressing of the connecting rod 17, the support blocks 23 can be opened while the guide blocks 19 move. When the square box 6 contacts the upper surface of the chain, the two support blocks 23 just complete the internal support of the two ends of the chain. Through the open support position of the support blocks 23 and the downward pressing and fixing of the square box 6, the device can be adapted to chains of different specifications. It should be noted here that the downward pressing distance of the connecting rod 17, the number of teeth on the connecting rod 17, and the rotation support distance of the cam 22 need to be actually measured and calculated.

[0047] like Figures 7 and 8 As shown, a plurality of return springs 24 are arranged between the two support blocks 23;

[0048] When the two support blocks 23 are opened, the two support blocks 23 pull the return spring 24 to open. When the two support blocks 23 do not need internal support, the return spring 24 drives the two support blocks 23 to return to their original positions, thereby achieving a reset effect.

[0049] like Figures 1 to 3 As shown, a pressing shaft 2 is fixedly mounted on the top of the pressing plate 8;

[0050] When the pressure plate 8 is pressed, the pressure plate 8 is moved downward by pressing the push shaft 2, thereby exerting a force. It should be noted that the device is used to shear small chains. When shearing medium and large chains, the push shaft 2 can be replaced by other mechanical power sources.

[0051] like Figure 3 to Figure 4 As shown, the pin fixing assembly includes a pin fixing block 25, and there are multiple pin fixing blocks 25. The multiple pin fixing blocks 25 are all slidably connected to the inner wall of the pin holding box 5. The inner wall of the pin holding box 5 is fixedly installed with multiple limiting shafts 11. The inner walls of the multiple pin fixing blocks 25 are respectively slidably connected to the outer walls of the multiple limiting shafts 11. Multiple pin fixing springs 12 are fixedly installed between the outer sides of the multiple pin fixing blocks 25 and the inner wall of the pin holding box 5. The multiple pin fixing springs 12 are placed outside the multiple limiting shafts 11.

[0052] When the chain pin on the chain is placed in the pin holding box 5, the chain is pressed so that the chain pin squeezes the pin fixing block 25 in the pin holding box 5 and slides backward on the limit shaft 11. When it is pressed down to a certain position, the chain pin enters between a group of pin fixing blocks 25. Through the elastic force of the pin fixing spring 12, one end of the chain pin can be fixed in the pin holding box 5, thereby playing the role of fixing the pin. It should be noted here that this fixing method is to determine the center position of the chain pin so that it is on the same horizontal plane as the center position of the push pin shaft 26.

[0053] Working principle: by placing the chain on the protrusion 4 on the top of the chain plate 3, placing one end of the chain pin on the chain in the pin holding box 5, the pin fixing component in the pin holding box 5 fixes the chain pin of the chain, and then the chain support unit in the housing 1 supports the two ends of the chain to prevent the push shaft 26 from deforming on both sides of the chain due to excessive force when removing the pin. When the chain support unit finishes supporting the two ends of the chain, the telescopic cylinder 7 is controlled to start. While the telescopic cylinder 7 is running, it drives the push shaft 26 to push down the chain pin on the chain, so that the chain pin is removed from the chain to achieve the effect of shearing the chain. As a result, since the center position of the pin holding box 5 and the center position of the push pin shaft 26 are on the same horizontal line, the fixed pin assembly in the pin holding box 5 can be used to keep the center position of the chain pin and the push pin shaft 26 on the same horizontal plane when the pin is removed, so as to avoid the phenomenon that the chain pin is damaged during shearing due to the difference in center position. The chain support unit is used to limit the two ends of the chain to prevent the push pin shaft 26 from deforming on both sides of the chain due to excessive force when the pin is removed, so as to protect the chain. Through the movable adjustment of the chain support unit and the fixed pin assembly, the device can be adapted to chains of different specifications.

[0054] When the chain is installed, the two ends of the chain are limited and supported internally, and the moving component drives the internal support component to extend from the shell 1 and slide into the inside of the chain. When moving, the internal support component slowly opens. When it moves to a certain position, the moving component stops moving. At this time, the internal support component is just placed inside the chain, and the opening distance of the internal support component is just the width distance inside the chain. When the moving component is moving, the limiting component also moves. When the opening distance of the internal support component is just the width distance inside the chain, the limiting component just contacts the outer walls of the two ends of the chain. Through the cooperation of the three, a complete limited internal support system is formed, thereby protecting the chain.

[0055] When the chain is installed, the pressing plate 8 drives the shaft 9 to squeeze the pressure spring 10 and move downward. During the movement, when the bottoms of the two square boxes 6 touch the upper surface of the chain, the two square boxes 6 will limit the two ends of the chain to prevent the chain from moving under the force when the pin is removed, thereby fixing the two ends of the chain.

[0056] When the square box 6 is fixed in place, the moving assembly drives the inner support assembly to complete the inner support operation of the chain, and then the telescopic cylinder 7 drives the push pin shaft 26 to press down and remove the pin. When the push pin shaft 26 is pressed down, the bottom of the two square boxes 6 fits with the top of the two ends of the chain to form a limit. When the pressure plate 8 is pressed down, the shaft rod 9 drives the squeeze plate 16 to continue to squeeze the return spring 15 through the slide groove 29 in the square box 6 and press and move. When the squeeze plate 16 moves down, the squeeze plate 16 will pass through the squeeze plate 16. The force squeezes the oil stored in the torque box 6 out of the oil outlet 30, and finally flows out through the oil delivery pipe 14. Due to the position setting of the oil delivery pipe 14, before the push pin shaft 26 contacts the chain pin, the oil in the torque box 6 has flowed onto the chain pin through the oil delivery pipe 14. Then, the push pin shaft 26 pushes the chain pin downward, and the oil in the oil delivery pipe 14 continues to flow out. When pushing the chain pin, the oil flowing out of the oil delivery pipe 14 can reduce the friction between the chain pin and the chain body, play a role in lubricating the chain pin, and facilitate the removal of the pin.

[0057] When the two square boxes 6 contact the outer ends of the chain, the moving assembly drives the inner support assembly to complete the inner support operation of the chain. At this time, the outer end of the chain will squeeze the control button 13 at the bottom of the square box 6, and the control button 13 will control the telescopic cylinder 7 to operate. Through the setting of the two control buttons 13, while controlling the movement of the telescopic cylinder 7, it can also simultaneously detect whether the surfaces of the two ends of the chain are horizontal. If not, it is determined that the two ends of this section of the chain have been deformed, and the telescopic cylinder 7 will not operate, which plays a role in controlling the telescopic cylinder 7 and also plays a role in detection;

[0058] When the pressing plate 8 is pressed down, the pressing plate 8 drives the connecting rod 17 to move downward. When the connecting rod 17 moves downward, the push block 21 on the connecting rod 17 pushes the displacement block 20 to move in the guide block 19, so that the inner support assembly in the guide block 19 is moved out of the housing 1 to the two ends of the chain, which plays a role of displacement.

[0059] When the guide block 19 is moved, the teeth on the bottom end of the connecting rod 17 push the transmission wheel 18 to rotate. When the transmission wheel 18 rotates, the transmission wheel 18 drives the cam 22 to rotate between the two support blocks 23. When the cam 22 rotates, the two support blocks 23 can slide and open in the guide block 19. When the two support blocks 23 are driven by the guide block 19 to enter the interior of the chain, the two support blocks 23 open up and down to support the two ends of the chain. By pressing the connecting rod 17, the support blocks 23 can be opened while the guide block 19 moves. When the rectangular box 6 contacts the upper surface of the chain, the two support blocks 23 just complete the internal support of the two ends of the chain. By opening the support block 23 and pressing down the rectangular box 6, the device can be adapted to chains of different specifications.

[0060] When the two support blocks 23 are opened, the two support blocks 23 pull the return spring 24 to open. When the two support blocks 23 do not need internal support, the return spring 24 drives the two support blocks 23 to return to their original positions, thereby playing a role of resetting.

[0061] When pressing the pressing plate 8, the pressing shaft 2 is pressed to drive the pressing plate 8 downward, thus exerting a force.

[0062] When the chain pin on the chain is placed in the pin holding box 5, the chain is pressed so that the chain pin squeezes the pin fixing block 25 in the pin holding box 5 and slides backward on the limit shaft 11. When it is pressed down to a certain position, the chain pin enters between a group of pin fixing blocks 25. Through the elastic force of the pin fixing spring 12, one end of the chain pin can be fixed in the pin holding box 5, thereby playing the role of fixing the pin. It should be noted here that this fixing method is to determine the center position of the chain pin so that it is on the same horizontal plane as the center position of the push pin shaft 26.

[0063] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A chain shearing machine, characterized in that: The invention comprises a chain plate (3), a shell (1) is fixedly mounted on the top of the chain plate (3), a telescopic cylinder (7) is fixedly mounted inside the shell (1), a push pin shaft (26) is fixedly mounted on the output shaft of the telescopic cylinder (7), a protrusion (4) is fixedly mounted symmetrically on one side of the top of the chain plate (3), a tripod (28) is fixedly mounted on the bottom of the chain plate (3), a pin holding box (5) is fixedly mounted on the inner wall of the chain plate (3), the center position of the pin holding box (5) is on the same horizontal line as the center position of the push pin shaft (26), and a chain support is arranged inside the shell (1). The chain support unit is used to support the chain internally when the push pin shaft (26) removes the chain pin, so as to prevent the push pin shaft (26) from deforming both sides of the chain due to excessive force when removing the pin, and thus making it impossible to continue to use the chain, thereby playing a protective role. The pin holding box (5) is provided with a pin fixing component inside, and the pin fixing component is used to fix the chain pin of the chain to be sheared, so as to prevent the force-applying end of the push pin shaft (26) and the chain pin from being on the same horizontal line when the chain is installed, thereby affecting the shearing effect, and also preventing the chain pin from being damaged due to different center positions when shearing; The chain support unit can be divided into a moving component, an inner support component and a limiting component. The moving component is used to drive the inner support component to move toward the two ends of the chain to play a role of displacement. The inner support component is used to internally support the two ends of the chain to prevent the two ends of the chain from being pulled by the push shaft (26) when the push shaft (26) moves the chain pin on the chain, resulting in deformation, thereby playing a role of supporting the chain. The limiting component is used to fix the two ends of the chain to prevent the chain from shaking during shearing, resulting in the chain running out of position, resulting in the center position of the chain pin being inconsistent with the center position of the force-applying end of the push shaft (26), thereby playing a role of limiting. The limiting assembly comprises a pressure plate (8), the pressure plate (8) being arranged inside the housing (1), a shaft (9) being symmetrically fixedly mounted on the bottom of the pressure plate (8), a rectangular box (6) being arranged at the bottom ends of the two shafts (9), a pressure spring (10) being symmetrically fixedly mounted between the pressure plate (8) and the inner wall of the housing (1), the two pressure springs (10) being arranged outside the two shafts (9), respectively, the two rectangular boxes (6) being located on both sides of the sales promotion shaft (26) and the two rectangular boxes (6) being respectively arranged directly above the two protrusions (4); The moving assembly comprises a connecting rod (17), wherein there are two connecting rods (17), the two connecting rods (17) are symmetrically fixedly connected to one side of the pressure plate (8), a push block (21) is fixedly installed on one side of the two connecting rods (17), a guide block (19) is symmetrically arranged at the bottom of the inner wall of the shell (1), the tops of the two guide blocks (19) are slidably connected to a displacement block (20), and one side of the two push blocks (21) is respectively slidably connected to the tops of the two displacement blocks (20); The inner support assembly comprises a transmission wheel (18), wherein there are two transmission wheels (18), the two transmission wheels (18) are symmetrically arranged on one side of the inner wall of the shell (1) and are rotatably connected to the inner wall of the shell (1), the teeth on the two transmission wheels (18) are respectively meshed with the teeth on the two connecting rods (17), the inner walls of the two displacement blocks (20) are symmetrically slidably connected with support blocks (23), a convex shaft (22) is arranged between the two support blocks (23), one end of the convex shaft (22) is fixedly connected to one side of the transmission wheel (18), the inner wall of the shell (1) is symmetrically provided with through grooves (27), and the outer walls of the two support blocks (23) are slidably connected to the inner wall of the through groove (27); A plurality of return springs (24) are arranged between the two support blocks (23); A pressing shaft (2) is fixedly mounted on the top of the pressing plate (8).

2. A chain shearing machine according to claim 1, characterized in that: An oil delivery pipe (14) is fixedly installed on the inner side of the two rectangular boxes (6), a slide groove (29) is opened on the inner wall of the two rectangular boxes (6), and the inner wall of the two slide grooves (29) is slidably connected with an extrusion plate (16). The bottom ends of the two shaft rods (9) are respectively fixedly connected to the top of the two extrusion plates (16), and the bottoms of the two extrusion plates (16) are symmetrically fixedly installed with a return spring (15), one end of the two return springs (15) is respectively fixedly connected to the inner wall of the two rectangular boxes (6), an oil outlet (30) is opened in the middle position of one side of the inner wall of the two rectangular boxes (6), one end of the two oil delivery pipes (14) is respectively fixedly connected to the inner wall of the two oil outlets (30), and the two oil delivery pipes (14) are placed on one side of the sales promotion shaft (26) and one end of the two oil delivery pipes (14) is adjacent to the outer wall of the sales promotion shaft (26).

3. A chain shearing machine according to claim 2, characterized in that: A control button (13) is fixedly mounted on the bottom of each of the two rectangular boxes (6).

4. A chain shearing machine according to claim 1, characterized in that: The pin fixing assembly comprises a pin fixing block (25), wherein there are a plurality of pin fixing blocks (25), each of the plurality of pin fixing blocks (25) being slidably connected to the inner wall of the pin holding box (5), the inner wall of the pin holding box (5) being fixedly mounted with a plurality of limiting shafts (11), the inner walls of the plurality of pin fixing blocks (25) being slidably connected to the outer walls of the plurality of limiting shafts (11) respectively, a plurality of pin fixing springs (12) being fixedly mounted between the outer sides of the plurality of pin fixing blocks (25) and the inner wall of the pin holding box (5), and the plurality of pin fixing springs (12) being disposed outside the plurality of limiting shafts (11).

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