A flatness machine anti-breaking belt mechanism and flatness machine

Abstract

The application belongs to the strip flatting technical field, in particular to a flatting machine anti-breaking strip mechanism and flatting machine, the anti-breaking strip mechanism is installed at both ends of the upper roller of the flatting machine, and comprises a pair of sleeves; the bottom surface of each sleeve is slidably connected with a connecting rod; the top surface of the connecting rod is fixedly connected with a plug; the plug and the sleeve are fixedly connected with a spring; the top surface of each sleeve is fixedly connected with a hydraulic pipe; the top surface of the hydraulic pipe is threadedly connected with an upper guide pipe; the upper guide pipe is connected with an external high-pressure power pump, and the upper guide pipe is in communication with the hydraulic pipe; the side surface of the hydraulic pipe is fixedly connected with a side guide pipe; the side guide pipe is in communication with the hydraulic pipe, and the side guide pipe is in communication with an external oil storage tank, and the oil storage tank is in communication with the high-pressure power pump; by closing the high-pressure pump, the hydraulic oil no longer extrudes the plug, at this time the spring is restored, thereby taking the connecting rod and the upper roller connected with the connecting rod, avoiding the continued extrusion of the stopped upper roller on the steel strip.

Description

Technical Field

[0001] This invention relates to the field of strip leveling technology, and in particular to a strip breakage prevention mechanism for a leveling machine and a leveling machine. Background Technology

[0002] After recrystallization or galvanizing, steel strip often needs to be leveled to obtain the necessary properties and surface quality to meet the needs of subsequent processing. The leveling of steel strip by the leveling machine is essentially a rolling deformation with a small reduction.

[0003] In existing technology, leveling machines generally use an external conveying mechanism to transport strip steel to a conveying roller on one side of the leveling machine. The conveying roller then transports the strip steel between the upper and lower rollers. The upper and lower rollers rotate and squeeze to achieve the leveling and conveying of the strip steel. Finally, the conveying roller on the other side of the upper and lower rollers takes the strip steel out of the leveling machine.

[0004] In existing leveling machines, multiple internal sensors monitor production status and the environment in real time during production. In case of emergencies, the upper and lower rollers are locked in time to stop the machine. However, even when the machine stops, the upper and lower rollers continue to squeeze the strip. Since the upper and lower rollers have stopped rotating, the strip continues to be squeezed by the rollers. In addition, the conveying mechanisms on both sides of the leveling machine are still conveying the strip. This can easily cause the strip to break at the upper and lower rollers, resulting in significant economic losses.

[0005] Therefore, the present invention provides a strip breakage prevention mechanism for a leveling machine and a leveling machine. Summary of the Invention

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the problem of strip breakage caused by the sudden stop of the upper and lower rolling mills in the prior art.

[0007] To solve the above technical problems, the present invention provides a strip breakage prevention mechanism for a leveling machine. The anti-strip breakage mechanism is installed at both ends of the upper roll of the leveling machine and includes a pair of sleeves. A connecting rod is slidably connected to the bottom surface of each sleeve. A blocking block is fixedly connected to the top surface of each connecting rod. A spring is fixedly connected between the blocking block and the sleeve. A hydraulic pipe is fixedly connected to the top surface of each sleeve. An upper guide tube is threadedly connected to the top surface of the hydraulic pipe. The upper guide tube is connected to an external high-pressure power pump and communicates with the hydraulic pipe, while the high-pressure power pump is controlled by an external microcomputer. A side guide tube is fixedly connected to the side of the hydraulic pipe. The side guide tube communicates with the hydraulic pipe and with an external oil tank, which in turn communicates with the high-pressure power pump. During operation, to reduce the risk of strip breakage when the leveling machine stops suddenly, this embodiment of the present invention can be used. First, the user connects the connecting rod... The rod is connected to the upper roll, and then an external microcomputer controls a high-pressure power pump to pump hydraulic oil from the oil tank into the hydraulic pipe through the upper guide tube. This causes the hydraulic oil to squeeze the block in the hydraulic pipe and flow back to the oil tank through the side guide tube. The block squeezed by the hydraulic oil will press down on the connecting rod, compress the spring, and press the upper roll down on the lower roll, thereby adjusting the gap between the upper and lower rolls. When the roll stops suddenly during production, the external microcomputer receives the emergency stop signal and shuts off the high-pressure pump. The hydraulic oil stops squeezing the block, the spring returns to its original position, and pushes the block towards the upper guide tube, thereby lifting the connecting rod and the upper roll connected to the connecting rod. This prevents the stopped upper roll from continuing to squeeze the steel strip, while the conveying mechanisms at both ends of the leveling machine continue to convey the steel strip, which could eventually lead to the steel strip breaking. This reduces the economic losses caused by the steel strip breakage.

[0008] In one embodiment of the present invention, a connecting membrane is installed between the side surface of the plug and the inner wall of the hydraulic pipe; the connecting membrane is made of an elastic material, and during operation, when hydraulic oil is pressed into the hydraulic pipe, the hydraulic oil presses the plug against the sleeve, and the connecting membrane is also moved along with it. Due to the presence of the connecting membrane, leakage of hydraulic oil at the gap between the plug and the hydraulic pipe can be effectively prevented.

[0009] In one embodiment of the present invention, the plug includes a plug and a connecting post; the plug and the connecting post are threaded together; an annular insert plate is fixedly connected to one end of the connecting membrane near the plug; annular grooves adapted to the annular insert plate are formed on the surface of the plug opposite to the connecting post; the end of the connecting membrane away from the annular insert plate is fixedly connected to the inner wall of the hydraulic pipe. During operation, during the assembly of the connecting membrane, the worker can insert one end of the annular insert plate of the connecting membrane into the annular groove on the end face of the connecting post, and then screw the plug onto the connecting post, so that the annular groove on the bottom surface of the plug is locked onto the top of the annular insert plate, thereby completing the fixation of the connecting membrane, which facilitates the worker's assembly of the connecting membrane.

[0010] In one embodiment of the present invention, the side surface of the annular insert plate is provided with an arc-shaped structure; a sealing gasket is fixedly connected to the bottom of the annular groove; an arc-shaped groove is formed on the top surface of the sealing gasket. During operation, when the annular insert plate is inserted into the annular groove, the arc-shaped groove on the surface of the sealing gasket in the annular groove will fit against the side of the annular insert plate, thereby reducing the gap between the annular insert plate and the annular groove, and further reducing the occurrence of hydraulic oil leakage.

[0011] In one embodiment of the present invention, a rubber sleeve is fitted onto the surface of the plug; multiple evenly arranged strip grooves are formed on the side surface of the rubber sleeve. During operation, when the plug is pushed up to the upper guide tube, the rubber sleeve on the surface of the plug can prevent the plug from directly impacting the inner wall of the hydraulic pipe, thus preventing wear of the plug. At the same time, when the plug is pressed against the upper guide tube, the strip grooves on the surface of the rubber sleeve can also prevent the plug from pushing most of the hydraulic oil in the hydraulic pipe into the upper guide tube, thereby preventing a surge in pressure inside the upper guide tube, which could lead to damage to the upper guide tube.

[0012] In one embodiment of the present invention, a limiting ring is fixedly connected to the bottom of the rubber sleeve on the surface of the plug; a plurality of evenly arranged limiting holes are opened on the top surface of the limiting ring; a limiting rod is fixedly connected to the top surface of the hydraulic pipe at the corresponding position of the limiting hole; the limiting rod is slidably connected to the limiting hole. During operation, when the plug moves towards the upper guide tube, the plug will drive the limiting ring on its surface to move together. Since the limiting rod is slidably connected to the limiting hole, the limiting rod will first limit the plug, preventing the plug from deviating when it rises rapidly, which would cause the plug to hit the top surface of the hydraulic pipe. As a result, the top of the plug cannot be inserted into the upper guide tube. Consequently, after the high-pressure power pump resumes pumping hydraulic oil into the hydraulic pipe, the top of the plug is not properly squeezed by the hydraulic oil, which leads to a lag in the downward pressure of the plug, causing the roll to tilt and affecting subsequent production.

[0013] In one embodiment of the present invention, a connecting plate is fixedly connected between the two hydraulic pipes; a plurality of uniformly arranged dampers are fixedly connected to the bottom surface of the connecting plate; a stop rod is fixedly connected to the bottom surface of the damper. During operation, when the connecting rod drives the roller to rise rapidly and the plug is about to be inserted into the upper guide tube, the stop rod on the bottom surface of the connecting plate will press against the roller and consume the kinetic energy of the roller through the damper, preventing the end of the roller from rising too fast, so that the plug will hit the inner wall of the hydraulic pipe under the inertia of the roller, thereby accelerating the aging or damage of the hydraulic pipe.

[0014] In one embodiment of the present invention, the bottom surface of the abutment rod is fixedly connected to a stop plate; the bottom surface of the stop plate is fixedly connected to an elastic pad. During operation, when the roll moves toward the abutment rod, the stop plate and the elastic pad on the bottom surface of the abutment rod will contact the surface of the roll, and the contact area with the roll will be increased through the elastic pad and the stop plate, thereby reducing the risk of scratching the surface of the roll. At the same time, the deformation of the elastic pad can also absorb some of the kinetic energy of the roll and reduce the speed of the roll.

[0015] A leveling machine, comprising any one of the above-described leveling machine anti-strip breakage mechanisms, the leveling machine including a pair of support frames; a lower roller rotatably connected between the two support frames; an upper roller slidably connected between the two support frames at the top of the lower roller, and the upper roller being driven by an external motor; a pair of conveying rollers rotatably connected to both sides of the two support frames at the lower roller; a connecting block rotatably connected to the roller shaft of the upper roller; a flange fixedly connected to the top surface of the connecting block. During operation, in order to flatten the surface of the steel strip and reduce its thickness, the user needs to convey the steel strip between the conveying rollers, and then convey the steel strip between the upper and lower rollers through the conveying rollers. Through the squeezing of the upper and lower rollers, the thickness of the steel strip is reduced and its surface is flattened. At the same time, the flange on the connecting block on the surface of the upper roller shaft also allows the user to easily fix the connecting rod to the connecting block, thereby facilitating the user's assembly and disassembly of the leveling machine and the leveling machine anti-strip breakage mechanism, and thus facilitating the user's maintenance or repair of both.

[0016] In one embodiment of the present invention, a plurality of evenly arranged rotating grooves are provided on the side surface of the connecting block near the upper roller shaft; each rotating groove is rotatably connected to a roller. During operation, when the upper roller rotates, the rollers in the rotating grooves on the surface of the connecting block will rotate together with the upper roller, thereby avoiding direct sliding friction between the upper roller and the surface of the connecting block, thus reducing wear on the surface of the connecting block and extending its service life.

[0017] The technical solution of the present invention has the following advantages compared with the prior art: 1. The present invention relates to a strip breakage prevention mechanism and a strip leveling machine. By shutting down the high-pressure pump, the hydraulic oil no longer squeezes the plug. At this time, the spring returns to its original state and pushes the plug toward the upper guide tube, thereby lifting the connecting rod and the upper roller connected to the connecting rod. This prevents the upper roller, which has stopped rotating, from continuing to squeeze the steel strip, while the conveying mechanisms at both ends of the strip leveling machine continue to convey the steel strip, ultimately leading to the breakage of the steel strip, thus reducing the economic losses caused by the breakage of the steel strip.

[0018] 2. The anti-breakage mechanism and leveling machine of the leveling machine described in this invention can effectively prevent hydraulic oil from leaking into the gap between the block and the hydraulic pipe through the presence of the connecting membrane. Attached Figure Description

[0019] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0020] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the hydraulic pipe structure in this invention; Figure 3 This is a cross-sectional view of the plug in this invention; Figure 4 yes Figure 3 Enlarged view of a portion of point A in the middle; Figure 5 This is a schematic diagram of the structure of the abutment in this invention; Figure 6 This is a schematic diagram of the upper roller structure in this invention; Figure 7 This is a schematic diagram of the connecting block in this invention; Explanation of reference numerals in the accompanying drawings: 1. Sleeve; 2. Connecting rod; 3. Plug; 4. Spring; 5. Hydraulic pipe; 6. Upper guide tube; 7. Side guide tube; 8. Connecting membrane; 9. Plug; 10. Connecting column; 11. Annular insert plate; 12. Annular groove; 13. Sealing gasket; 14. Arc groove; 15. Rubber sleeve; 16. Strip groove; 17. Limiting ring; 18. Limiting hole; 19. Limiting rod; 20. Connecting plate; 21. Damper; 22. Abutment rod; 23. Abutment plate; 24. Elastic pad; 25. Support frame; 26. Lower roller; 27. Upper roller; 28. Conveying roller; 29. ​​Connecting block; 30. Flange; 31. Rotating groove; 32. Roller. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0022] Reference Figures 1 to 2As shown in the embodiment of the present invention, a strip breakage prevention mechanism for a leveling machine is installed at both ends of the upper roll 27 of the leveling machine. The mechanism includes a pair of sleeves 1, connecting rods 2, blocking blocks 3, springs 4, hydraulic pipes 5, an upper guide tube 6, and a side guide tube 7. The bottom surfaces of both sleeves 1 are slidably connected to the connecting rods 2. A blocking block 3 is fixedly connected to the top surface of the connecting rod 2. A spring 4 is fixedly connected between the blocking block 3 and the sleeve 1. Hydraulic pipes 5 are fixedly connected to the top surfaces of both sleeves 1. An upper guide tube 6 is threadedly connected to the top surface of the hydraulic pipe 5. The upper guide tube 6 is connected to an external high-pressure power pump and communicates with the hydraulic pipe 5, while the high-pressure power pump is controlled by an external microcomputer. A side guide tube 7 is fixedly connected to the side of the hydraulic pipe 5. The side guide tube 7 communicates with the hydraulic pipe 5 and is also connected to an external oil tank, which in turn communicates with the high-pressure power pump. During operation, to reduce the risk of strip breakage when the leveling machine stops suddenly, this embodiment of the present invention can be used. First, the user connects the connecting rod 2 to the upper roller 27. Then, the external microcomputer controls the high-pressure power pump to pump the hydraulic oil in the oil tank into the hydraulic pipe 5 through the upper conduit 6. This causes the hydraulic oil to squeeze the block 3 in the hydraulic pipe 5 and flow back into the oil tank through the side conduit 7. The block 3 squeezed by the hydraulic oil will press down on the connecting rod 2, compress the spring 4, and press the upper roller 27 down onto the lower roller 26, thereby adjusting the distance between the upper roller 27 and the lower roller 26. When the roller stops suddenly during production, the external microcomputer receives the signal and shuts down the high-pressure pump. The hydraulic oil stops squeezing the block 9. At this time, the spring 4 returns to its original position and pushes the block 9 toward the upper conduit 6, thereby lifting the connecting rod 2 and the upper roller 27 connected to the connecting rod 2. This prevents the stopped upper roller 27 from continuing to squeeze the steel strip, while the conveying mechanisms at both ends of the leveling machine continue to convey the steel strip, which would eventually lead to the breakage of the steel strip, thus reducing the economic losses caused by the steel strip breakage.

[0023] Reference Figures 1 to 2 As shown, a connecting membrane 8 is installed between the side surface of the plug 3 and the inner wall of the hydraulic pipe 5. The connecting membrane 8 is made of elastic material. When hydraulic oil is pressed into the hydraulic pipe 5 during operation, the hydraulic oil presses the plug 3 against the sleeve 1, and the connecting membrane 8 is also moved along with it. Due to the presence of the connecting membrane 8, leakage of hydraulic oil can be effectively prevented at the gap between the plug 3 and the hydraulic pipe 5.

[0024] Reference Figures 2 to 3As shown, the plug 3 includes a plug 9 and a connecting post 10; the plug 9 and the connecting post 10 are threaded together; an annular insert plate 11 is fixedly connected to one end of the connecting membrane 8 near the plug 9; annular grooves 12 adapted to the annular insert plate 11 are opened on the surface of the plug 9 opposite to the connecting post 10; the end of the connecting membrane 8 away from the annular insert plate 11 is fixedly connected to the inner wall of the hydraulic pipe 5. During operation, during the assembly of the connecting membrane 8, the worker can insert the annular insert plate 11 at one end of the connecting membrane 8 into the annular groove 12 on the end face of the connecting post 10, and then screw the plug 9 onto the connecting post 10, so that the annular groove 12 on the bottom surface of the plug 9 is locked onto the top of the annular insert plate 11, thereby completing the fixation of the connecting membrane 8, which facilitates the worker's assembly of the connecting membrane 8.

[0025] Reference Figure 3 As shown, the side surface of the annular insert plate is arranged in an arc shape; a sealing gasket 13 is fixedly connected to the bottom of the annular groove 12; an arc groove 14 is opened on the top surface of the sealing gasket 13, and the arc groove 14 is adapted to the side surface of the annular insert plate 11. During operation, when the annular insert plate 11 is inserted into the annular groove 12, the arc groove 14 on the surface of the sealing gasket 13 in the annular groove 12 will fit against the side of the annular insert plate 11, thereby reducing the gap between the annular insert plate 11 and the annular groove 12, and further reducing the occurrence of hydraulic oil leakage.

[0026] Reference Figure 2 As shown, a rubber sleeve 15 is fitted onto the surface of the plug 9; multiple evenly arranged strip grooves 16 are formed on the side surface of the rubber sleeve 15. During operation, when the plug 9 is pushed against the upper guide tube 6, the rubber sleeve 15 on the surface of the plug 9 can prevent the plug 9 from directly impacting the inner wall of the hydraulic pipe 5, thus preventing wear of the plug 9. At the same time, when the plug 9 is pressed against the upper guide tube 6, the strip grooves 16 on the surface of the rubber sleeve 15 can also prevent the plug 9 from pushing most of the hydraulic oil in the hydraulic pipe 5 into the upper guide tube 6, thereby preventing a surge in pressure in the upper guide tube 6 and thus preventing damage to the upper guide tube 6.

[0027] Reference Figure 2As shown, the surface of the plug 9 is fixed to the bottom of the rubber sleeve 15 with a limiting ring 17; the top surface of the limiting ring 17 has a plurality of evenly arranged limiting holes 18; the top surface inside the hydraulic pipe 5 is fixed to a limiting rod 19 at the corresponding position of the limiting hole 18, and the limiting rod 19 is made of rigid material; the limiting rod 19 is slidably connected to the limiting hole 18. During operation, when the plug 9 moves toward the upper guide tube 6, the plug 9 will drive the limiting ring 17 on its surface to move together. Since the limiting rod 19 is slidably connected to the limiting hole 18, the limiting rod 19 will first limit the plug 9, preventing the plug 9 from deviating when it rises rapidly, causing the plug 9 to hit the top surface of the hydraulic pipe 5, thus preventing the top of the plug 9 from being inserted into the upper guide tube 6. As a result, after the high-pressure power pump resumes pumping hydraulic oil into the hydraulic pipe 5, the top of the plug 9 is not properly squeezed by the hydraulic oil, which leads to a lag in the downward pressure of the plug 9, causing the roll to tilt and affecting subsequent production.

[0028] Reference Figure 1 As shown, a connecting plate 20 is fixedly connected between the two hydraulic pipes 5; a plurality of evenly arranged dampers 21 are fixedly connected to the bottom surface of the connecting plate 20; a stop rod 22 is fixedly connected to the bottom surface of the damper 21. During operation, when the connecting rod 2 drives the roller to rise rapidly and the plug 9 is about to be inserted into the upper guide tube 6, the stop rod 22 on the bottom surface of the connecting plate 20 will press against the roller and consume the kinetic energy of the roller through the damper 21, preventing the end of the roller from rising too fast, so that the plug 9 will hit the inner wall of the hydraulic pipe 5 under the inertia of the roller, thereby accelerating the aging or damage of the hydraulic pipe 5.

[0029] Reference Figure 6 and Figure 7As shown, a leveling machine includes any one of the leveling machine anti-breakage mechanisms described above. The leveling machine includes a pair of support frames 25, which are fixedly connected to both ends of a connecting plate 20. A lower roller 26 is rotatably connected between the two support frames 25. An upper roller 27 is slidably connected between the two support frames 25 at the top of the lower roller 26, and the upper roller 27 is driven by an external engine. A pair of conveying rollers 28 are rotatably connected to both sides of the lower roller 26 on the two support frames 25. A connecting block 29 is rotatably connected to the roller shaft of the upper roller 27. A flange 30 is fixedly connected to the top surface of the connecting block 29 for... The strip is then assembled with connecting rod 2. During operation, in order to make the steel strip surface flat and reduce the steel strip thickness, the user needs to feed the steel strip between the conveying rollers 28, and then feed the steel strip between the upper roller 27 and the lower roller 26 through the conveying rollers 28. Through the squeezing of the upper roller 27 and the lower roller 26, the thickness of the steel strip is reduced and its surface is flattened. At the same time, the flange 30 on the connecting block 29 on the surface of the upper roller 27 roller shaft can also make it easy for the user to fix the connecting rod 2 on the connecting block 29, thereby making it easy for the user to assemble and disassemble the leveling machine and the leveling machine anti-strip breakage mechanism, and thus making it easy for the user to repair or maintain both.

[0030] Reference Figure 7 As shown, the connecting block 29 has multiple evenly arranged rotating grooves 31 on the side surface near the upper roller 27 shaft; each rotating groove 31 is rotatably connected to a roller 32. During operation, when the upper roller 27 rotates, the rollers 32 in the rotating grooves 31 on the surface of the connecting block 29 will rotate together with the upper roller 27, thereby avoiding direct sliding friction between the upper roller 27 and the surface of the connecting block 29, thus reducing wear on the surface of the connecting block 29 and extending its service life.

[0031] Example 2 Reference Figure 5 As shown in the comparative embodiment one, another embodiment of the present invention is as follows: the bottom surface of the abutment 22 is fixedly connected to the abutment plate 23; the bottom surface of the abutment plate 23 is fixedly connected to the elastic pad 24. During operation, when the roll moves toward the abutment 22, the abutment plate 23 and the elastic pad 24 on the bottom surface of the abutment 22 will contact the surface of the roll, and the contact area with the roll will be increased through the elastic pad 24 and the abutment plate 23, thereby reducing the risk of scratching the surface of the roll. At the same time, the deformation of the elastic pad 24 can also absorb some of the kinetic energy of the roll and reduce the speed of the roll.

[0032] To reduce the risk of strip breakage during emergency stops of the leveling machine, this invention can be used. First, the user connects the connecting rod 2 to the upper roller 27. Then, an external microcomputer controls a high-pressure power pump to pump hydraulic oil from the reservoir into the hydraulic pipe 5 via the upper conduit 6. This causes the hydraulic oil to squeeze the block 3 in the hydraulic pipe 5 and flow back into the reservoir via the side conduit 7. The block 3, squeezed by the hydraulic oil, presses down on the connecting rod 2, compresses the spring 4, and pushes the upper roller 27 down onto the lower roller 26, thus achieving adjustment. The distance between the upper roll 27 and the lower roll 26 is controlled. When the rolls stop suddenly during production, the external microcomputer receives the emergency stop signal and shuts down the high-pressure pump. The hydraulic oil stops squeezing the plug 9. At this time, the spring 4 returns to its original position and pushes the plug 9 toward the upper guide tube 6, thereby lifting the connecting rod 2 and the upper roll 27 connected to the connecting rod 2. This prevents the stopped upper roll 27 from continuing to squeeze the steel strip, while the conveying mechanisms at both ends of the leveling machine continue to convey the steel strip, which will eventually lead to the breakage of the steel strip, thus reducing the economic losses caused by the breakage of the steel strip.

[0033] When hydraulic oil is forced into hydraulic pipe 5, the hydraulic oil presses the plug 3 against the sleeve 1, and the connecting membrane 8 is also moved along with it. Due to the presence of the connecting membrane 8, hydraulic oil can be effectively prevented from leaking at the gap between the plug 3 and hydraulic pipe 5.

[0034] During the assembly of the connecting membrane 8, the worker can insert the annular insert plate 11 at one end of the connecting membrane 8 into the annular groove 12 on the end face of the connecting post 10, and then screw the plug 9 onto the connecting post 10, so that the annular groove 12 on the bottom surface of the plug 9 is locked onto the top of the annular insert plate 11, thereby completing the fixation of the connecting membrane 8, which facilitates the worker's assembly of the connecting membrane 8.

[0035] When the annular insert plate 11 is inserted into the annular groove 12, the arc-shaped groove 14 on the surface of the sealing gasket 13 in the annular groove 12 will fit against the side of the annular insert plate 11, thereby reducing the gap between the annular insert plate 11 and the annular groove 12, and further reducing the occurrence of hydraulic oil leakage.

[0036] When the plug 9 is pushed against the upper conduit 6, the rubber sleeve 15 on the surface of the plug 9 can prevent the plug 9 from directly impacting the inner wall of the hydraulic pipe 5, thus preventing the plug 9 from wearing. At the same time, when the plug 9 is pressed against the upper conduit 6, the strip groove 16 on the surface of the rubber sleeve 15 can also prevent the plug 9 from pushing most of the hydraulic oil in the hydraulic pipe 5 into the upper conduit 6, thereby preventing the pressure in the upper conduit 6 from surging and causing the upper conduit 6 to break.

[0037] When the plug 9 moves toward the upper guide tube 6, the plug 9 will move the limiting ring 17 on its surface together. Since the limiting rod 19 is slidably connected to the limiting hole 18, the limiting rod 19 will limit the plug 9 to prevent it from deviating when it rises rapidly. This would cause the plug 9 to hit the top surface of the hydraulic pipe 5, preventing the top of the plug 9 from being inserted into the upper guide tube 6. As a result, when the high-pressure power pump resumes pumping hydraulic oil into the hydraulic pipe 5, the top of the plug 9 will not be properly squeezed by the hydraulic oil, which will cause the downward pressure of the plug 9 to lag, causing the roll to tilt and affecting subsequent production.

[0038] When the connecting rod 2 drives the roller to rise rapidly and the plug 9 is about to be inserted into the upper guide tube 6, the abutment 22 on the bottom surface of the connecting plate 20 will press against the roller and consume the kinetic energy of the roller through the damper 21 to prevent the roller from rising too fast at the end, so that the plug 9 will hit the inner wall of the hydraulic pipe 5 under the inertia of the roller, which will lead to accelerated aging or damage of the hydraulic pipe 5.

[0039] When the roll moves toward the stop bar 22, the stop plate 23 on the bottom surface of the stop bar 22 and the elastic pad 24 thereon will come into contact with the surface of the roll. The contact area with the roll is increased by passing through the elastic pad 24 and the stop plate 23, thereby reducing the risk of scratching the surface of the roll. At the same time, the deformation of the elastic pad 24 can also absorb some of the kinetic energy of the roll and reduce the speed of the roll.

[0040] To make the steel strip surface flat and reduce its thickness, the user needs to feed the steel strip between the conveyor rollers 28, and then the conveyor rollers 28 feed the steel strip between the upper roller 27 and the lower roller 26. The compression of the upper roller 27 and the lower roller 26 reduces the thickness of the steel strip and flattens its surface. At the same time, the flange 30 on the connecting block 29 on the surface of the upper roller 27 roller shaft can also make it easy for the user to fix the connecting rod 2 on the connecting block 29, thereby facilitating the user to assemble and disassemble the leveling machine and the leveling machine anti-strip breakage mechanism, and thus facilitating the user to repair or maintain both.

[0041] When the upper roller 27 rotates, the roller 32 in the rotating groove 31 on the surface of the connecting block 29 will rotate with the upper roller 27, thereby avoiding direct sliding friction between the upper roller 27 and the surface of the connecting block 29, thus reducing wear on the surface of the connecting block 29 and extending its service life.

[0042] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A strip breakage prevention mechanism for a leveling machine, wherein the strip breakage prevention mechanism is installed at both ends of the upper roller (27) of the leveling machine, characterized in that: Includes a pair of sleeves (1); a connecting rod (2) is slidably connected to the bottom surface of each of the two sleeves (1); a block (3) is fixedly connected to the top surface of the connecting rod (2); a spring (4) is fixedly connected between the block (3) and the sleeve (1); a hydraulic pipe (5) is fixedly connected to the top surface of the two sleeves (1); an upper guide pipe (6) is threadedly connected to the top surface of the hydraulic pipe (5); the upper guide pipe (6) is connected to an external high-pressure power pump, and the upper guide pipe (6) is connected to the hydraulic pipe (5), while the high-pressure power pump is controlled by an external microcomputer; a side guide pipe (7) is fixedly connected to the side of the hydraulic pipe (5); the side guide pipe (7) is connected to the hydraulic pipe (5), and the side guide pipe (7) is connected to an external oil tank, while the oil tank is connected to the high-pressure power pump; A connecting membrane (8) is installed between the side surface of the plug (3) and the inner wall of the hydraulic pipe (5); the connecting membrane (8) is made of an elastic material; The plug (3) includes a plug (9) and a connecting post (10); the plug (9) and the connecting post (10) are threaded together; the end of the connecting membrane (8) near the plug (9) is fixedly connected to an annular insert plate (11); the surface of the plug (9) opposite to the connecting post (10) is provided with an annular groove (12) that matches the annular insert plate (11); the end of the connecting membrane (8) away from the annular insert plate (11) is fixedly connected to the inner wall of the hydraulic pipe (5); The side surface of the annular insert (11) is arranged in an arc shape; a sealing gasket (13) is fixedly connected to the bottom of the annular groove (12); an arc groove (14) is opened on the top surface of the sealing gasket (13); A connecting plate (20) is fixedly connected between the two hydraulic pipes (5); a plurality of uniformly arranged dampers (21) are fixedly connected to the bottom surface of the connecting plate (20); a stop rod (22) is fixedly connected to the bottom surface of the damper (21). The bottom surface of the abutment rod (22) is fixedly connected to the abutment plate (23); the bottom surface of the abutment plate (23) is fixedly connected to the elastic pad (24).

2. The anti-stripping mechanism for a leveling machine according to claim 1, characterized in that: The surface of the plug (9) is fitted with a rubber sleeve (15); the side surface of the rubber sleeve (15) has multiple evenly arranged strip grooves (16).

3. The anti-stripping mechanism for a leveling machine according to claim 2, characterized in that: The plug (9) is fixed to the bottom of the rubber sleeve (15) by a limiting ring (17); the top surface of the limiting ring (17) is provided with a plurality of evenly arranged limiting holes (18); the top surface inside the hydraulic pipe (5) is fixed to a limiting rod (19) at the corresponding position of the limiting hole (18); the limiting rod (19) is slidably connected to the limiting hole (18).

4. A leveling machine, the leveling machine comprising the anti-breakage belt mechanism of any one of claims 1-3, characterized in that: The leveling machine includes a pair of support frames (25); a lower roller (26) is rotatably connected between the two support frames (25); an upper roller (27) is slidably connected between the two support frames (25) at the top of the lower roller (26), and the upper roller (27) is driven by an external engine; a pair of conveying rollers (28) are rotatably connected to both sides of the lower roller (26) of the two support frames (25); a connecting block (29) is rotatably connected to the roller shaft of the upper roller (27); a flange (30) is fixedly connected to the top surface of the connecting block (29).

5. A leveling machine according to claim 4, characterized in that: The connecting block (29) has a plurality of evenly arranged rotating grooves (31) on the side surface near the upper roller (27) shaft; each rotating groove (31) is rotatably connected to a roller (32).

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