Anti-adhesion wear spiral groove blade double-cylinder hydraulic shears

Abstract

The present application relates to the technical field of hydraulic shears, and discloses an anti-sticking and wear-resistant spiral groove blade double-cylinder hydraulic shear, which comprises a machine base, a machine body shell is rotationally connected to the machine base through a rotating disc arranged on the outer surface of the machine base, an oil cylinder is rotationally connected to the side surface of the machine body shell, an output end of the oil cylinder is rotationally connected to a tool holder, and the tool holder is rotationally connected to the inside of the machine body shell through a rotating shaft arranged at one end of the tool holder. The anti-sticking and wear-resistant spiral groove blade double-cylinder hydraulic shear can effectively solve the problem that in the prior art, the blade is tightly fixed on the tool holder through a plurality of bolts, and when the blade needs to be replaced, the workers have to spend a lot of time and energy to unscrew and remove the bolts one by one. Since the number of bolts is large, and some of the bolts may be corroded and deformed due to long-term use, the disassembly process of the blade becomes more difficult, and the use efficiency of the hydraulic shear is reduced.

Description

Technical Field

[0001] This invention relates to the field of hydraulic shearing technology, specifically to a dual-cylinder hydraulic shear with anti-adhesive wear spiral groove blades. Background Technology

[0002] A dual-cylinder hydraulic shear is an industrial device that uses a hydraulic system to drive two hydraulic cylinders to generate powerful shearing force. It is commonly used in industries such as metal processing, scrap steel recycling, shipbuilding, automobile dismantling, and building demolition. Its main function is to cut various metal sheets, profiles, pipes, or structural components. Hydraulic shears are a highly efficient material shearing device with extremely wide applications.

[0003] In existing technologies, hydraulic shears often use multiple bolts to tightly fix the blade to the blade holder. When the blade needs to be replaced, the operator must spend a lot of time and effort to loosen and remove these bolts one by one. Due to the large number of bolts, and the fact that some bolts may rust or deform due to long-term use, the process of disassembling and assembling the blade becomes more difficult, which in turn reduces the efficiency of the hydraulic shears. Summary of the Invention

[0004] To address the aforementioned shortcomings of existing technologies, this invention provides a dual-cylinder hydraulic shear with anti-adhesive wear spiral groove blades. This effectively solves the problem that in existing technologies, hydraulic shears often use multiple bolts to tightly fix the blade to the blade holder. When the blade needs to be replaced, workers must spend a lot of time and effort to loosen and remove these bolts one by one. Due to the large number of bolts, and the fact that some bolts may rust or deform due to long-term use, the blade disassembly and assembly process becomes more difficult, leading to a reduction in the efficiency of the hydraulic shear.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] This invention provides a dual-cylinder hydraulic shear with anti-adhesive wear spiral groove blades, comprising:

[0007] The machine base is rotatably connected to the machine body housing via a rotating disk on its outer surface. A hydraulic cylinder is rotatably connected to the side of the machine body housing. A tool holder is rotatably connected to the output end of the hydraulic cylinder. The tool holder is rotatably connected to the inside of the machine body housing via a rotating shaft at one end. A guide post is slidably connected to the tool holder via a placement groove on its outer surface.

[0008] The blade is fitted to the outer surface of the guide post through a groove formed inside it, and the outer surface of the blade slides in contact with the inner wall surface of the placement groove. A side blade is fixedly connected to the side of the blade. The blade and the side blade are integrally molded. A chip removal groove is formed on the outer surface of the side blade. The guide post is provided with a connecting piece for assembling and disassembling the blade through a through groove formed inside it.

[0009] The connector includes a limiting strip fixedly connected to the inner wall of the through groove, and a reciprocating column that slides against the outer surface of the limiting strip is provided inside the through groove. A connecting ring is fixedly connected to the outer circumference of the reciprocating column.

[0010] Furthermore, there are two reciprocating columns, which are symmetrically distributed around the guide column. A spring is fitted on the outer circumference of the reciprocating column and fits against the outer surface of the connecting ring. The side of the spring away from the connecting ring is connected to the inner wall of the through groove.

[0011] Furthermore, the guide post has a circular groove inside that communicates with the inside of the through groove. The reciprocating post is rotatably connected to a connecting rod via a connecting seat fixed on the side of the reciprocating post near the circular groove. The end of the connecting rod away from the connecting seat is rotatably connected to a connecting rod that slides against the inner wall of the circular groove. A circular block is fixedly connected between the two connecting rods.

[0012] Furthermore, the upper surface of the guide column is damped and slidably connected with a dustproof plate, and the outer surface of the reciprocating column adopts a snap-fit ​​design that fits against the inner wall surface of the slot.

[0013] Furthermore, three guide posts are provided: the guide posts on both sides are side posts, and the guide post in the middle is the middle post. The outer end of each side post passes through the tool holder and is fixedly connected to a connecting plate. A compression spring is fitted on the outer circumference of the side post, which fits against the outer surface of the tool holder. The compression spring fitted on the outer surface of the side post can provide cushioning.

[0014] Furthermore, a support frame is fixedly connected to the side of the tool holder near the connecting plate. The outer end of the intermediate column penetrates the connecting plate and is fixedly connected to a limiting post. A toothed ring 1 is fitted onto the limiting post through a groove on its outer surface. The upper surface of the toothed ring 1 is rotatably connected to the lower surface of the support frame. A toothed ring 2 is fixedly connected to the outer surface of the rotating shaft. A transmission chain that meshes with the outer surfaces of the toothed ring 1 and the toothed ring 2 is provided on the outer surface of the tool holder. A protective shell is provided on the outer surface of the tool holder to protect the toothed ring 1, the toothed ring 2, the transmission chain, and related components.

[0015] Furthermore, the intermediate column fits into the interior of the tool holder through a threaded groove on its outer surface. Multiple chip removal grooves are provided, and these grooves employ a spiral design. The width of the chip removal grooves is gradually varied, with the widest point closer to the connecting plate. During the shearing process, the generated chips are gradually discharged outwards along the guide of the spiral chip removal grooves. The chips initially enter the narrower end of the groove, and as more chips enter, the groove width gradually widens, providing more space for the chips and preventing blockages. This also facilitates the smooth discharge of chips.

[0016] The technical solution provided by this invention has the following advantages compared with the prior art:

[0017] This invention comprises a connector, a connecting seat, a connecting rod, a connecting rod, and a circular block. When disassembling the blade, simply push the dust cover to expose the opening of the circular groove. Use a screwdriver or similar rod-like object to push the circular block, causing the reciprocating columns on both sides to retract and no longer engage with the groove inside the blade, thus releasing the blade. When installing the blade, the tapered design of the blade causes the reciprocating columns to automatically retract, and the blade automatically locks itself when the spring returns to its original position. The installation and disassembly of the blade are simple, requiring only a screwdriver or similar simple tools, thanks to the connector, connecting seat, connecting rod, connecting rod, and circular block. This simplifies the blade assembly and disassembly process and improves the efficiency of the hydraulic shears. The inclined arc-shaped chip removal groove on the side blade effectively removes shearing chips, reducing adhesion and clogging, lowering the risk of wear, maintaining shearing efficiency, and effectively preventing chip accumulation. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the separation structure of the machine body housing, oil cylinder and tool holder in an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the separation structure of the tool holder and the cutting edge in an embodiment of the present invention;

[0022] Figure 4 This is a schematic cross-sectional view of the tool holder according to an embodiment of the present invention;

[0023] Figure 5 This is an embodiment of the present invention. Figure 4 A magnified structural diagram of part A in the middle;

[0024] Figure 6 This is a schematic cross-sectional view of the intercolumn and side columns in an embodiment of the present invention;

[0025] Figure 7 This is a schematic diagram of the tool holder from another angle according to an embodiment of the present invention;

[0026] Figure 8 This is a schematic diagram of the separation structure of the intercolumn, toothed ring 1, and side column in an embodiment of the present invention;

[0027] Figure 9 This is a schematic diagram of the reciprocating column, connecting seat, connecting rod, connecting rod and circular block in an embodiment of the present invention.

[0028] The labels in the diagram represent: 1. Machine base; 11. Rotary disk; 12. Machine body housing; 13. Hydraulic cylinder; 14. Tool holder; 141. Rotating shaft; 142. Placement slot; 15. Guide post; 151. Through slot; 152. Circular slot; 153. Side post; 154. Intermediate post; 1541. Threaded slot; 16. Connecting seat; 161. Connecting rod; 162. Connecting rod; 163. Circular block; 164. Dustproof plate; 17. Connecting plate; 171. Compression spring; 18. Support frame; 181. Limiting post; 1811. Slide groove; 182. Gear ring one; 183. Gear ring two; 184. Transmission chain; 2. Blade; 21. Side blade; 211. Chip removal groove; 22. Connecting piece; 221. Limiting strip; 222. Reciprocating post; 223. Connecting ring; 224. Spring. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0030] The present invention will be further described below with reference to embodiments.

[0031] Example:

[0032] Please see Figures 1-9 This invention provides a technical solution: a dual-cylinder hydraulic shear with anti-adhesive wear spiral groove blades, comprising:

[0033] The base 1 is rotatably connected to the housing 12 via a rotating disk 11 on its outer surface. A hydraulic cylinder 13 is rotatably connected to the side of the housing 12. A tool holder 14 is rotatably connected to the output end of the hydraulic cylinder 13. The tool holder 14 is rotatably connected to the inside of the housing 12 via a rotating shaft 141 at one end. A guide post 15 is slidably connected to the tool holder 14 via a placement groove 142 on its outer surface.

[0034] The blade 2 is fitted to the outer surface of the guide post 15 through a slot formed inside it, and the outer surface of the blade 2 slides against the inner wall surface of the placement groove 142. A side blade 21 is fixedly connected to the side of the blade 2. The blade 2 and the side blade 21 are integrally molded. A chip removal groove 211 is formed on the outer surface of the side blade 21. The guide post 15 is provided with a connector 22 for assembling and disassembling the blade 2 through a through groove 151 formed inside it.

[0035] The connector 22 includes a limiting strip 221 that is fixedly connected to the inner circumferential wall of the through groove 151. The inside of the through groove 151 is provided with a reciprocating column 222 that slides against the outer surface of the limiting strip 221. A connecting ring 223 is fixedly connected to the outer circumferential surface of the reciprocating column 222.

[0036] There are two reciprocating columns 222, which are symmetrically distributed around the guide column 15. A spring 224 is fitted on the outer circumference of the reciprocating column 222 and fits against the outer surface of the connecting ring 223. The side of the spring 224 away from the connecting ring 223 is connected to the inner wall of the through groove 151.

[0037] The guide post 15 has a circular groove 152 that communicates with the inside of the through groove 151. The reciprocating post 222 is rotatably connected to a connecting rod 161 via a connecting seat 16 fixed on the side of the reciprocating post 222 that is close to the circular groove 152. The end of the connecting rod 161 away from the connecting seat 16 is rotatably connected to a connecting rod 162 that slides against the inner wall of the circular groove 152. A circular block 163 is fixedly connected between the two connecting rods 162.

[0038] The upper surface of the guide column 15 is damped and slidably connected to a dustproof plate 164, and the outer surface of the reciprocating column 222 adopts a snap-fit ​​design that fits against the inner wall surface of the slot.

[0039] Three guide posts 15 are provided: the two guide posts 153 on both sides and the guide post 15 in the middle is the middle post 154. The outer end of the side post 153 passes through the tool holder 14 and is fixedly connected to the connecting plate 17. The outer circumference of the side post 153 is fitted with a compression spring 171 that fits against the outer surface of the tool holder 14. The compression spring 171 fitted on the outer surface of the side post 153 can provide cushioning.

[0040] A support frame 18 is fixedly connected to the side of the tool holder 14 near the connecting plate 17. The outer end of the intermediate column 154 passes through the connecting plate 17 and is fixedly connected to a limiting column 181. A toothed ring 182 is fitted onto the limiting column 181 through a groove 1811 on its outer surface. The upper surface of the toothed ring 182 is rotatably connected to the lower surface of the support frame 18. A toothed ring 183 is fixedly connected to the outer surface of the rotating shaft 141. A transmission chain 184 is provided on the outer surface of the tool holder 14, which meshes with the outer surfaces of the toothed rings 182 and 183. A protective shell is provided on the outer surface of the tool holder 14 to protect components such as the toothed rings 182, 183, and transmission chain 184.

[0041] The intermediate column 154 fits into the interior of the tool holder 14 through a threaded groove 1541 formed on its outer surface. Multiple chip removal grooves 211 are provided, and each groove adopts a spiral design. The width of the chip removal grooves 211 is gradually varied, with the widest point closer to the connecting plate 17. During the shearing process, the generated chips are gradually discharged outward along the guide of the spiral chip removal grooves 211. The chips first enter the narrower end of the chip removal grooves 211, and as more chips enter, the width of the chip removal grooves 211 gradually widens, providing more space for the chips and preventing blockages. This also facilitates the smooth discharge of chips.

[0042] In practical applications, the base 1 of a hydraulic shear is usually connected to a mechanical arm that drives the hydraulic system, and objects placed at different angles can be sheared by rotating the disc 11.

[0043] In the initial state, the connector 22 is in the unfolded state inside the through groove 151. Inside the through groove 151 of each guide post 15, there are two sets of connectors 22, connecting seats 16, connecting rods 161, and connecting rods 162. The two sets of connectors 22 are symmetrically distributed on both sides of the circular groove 152, while the two connecting rods 162, connecting rods 161, and connecting seats 16 are arranged in an array around the circular groove 152. The through groove 151 and the circular groove 152 are internally connected and are perpendicular to each other. In the initial state, the spring 224 inside the through groove 151 is in the unfolded state, with its outer end abutting against the connecting ring 223, forcing the reciprocating post 222 to be in the unfolded state. The side of the reciprocating column 222 away from the circular groove 152 adopts a snap-fit ​​design, which can be divided into an upper conical section and a lower annular section. Correspondingly, the groove inside also adopts a segmented design, with the upper part being a conical groove section and the lower part being an annular groove section. In this state, the annular section of the reciprocating column 222 engages with the annular groove section of the groove in the blade 2, which can combine the blade 2 and the guide column 15 into a whole. Within each guide column 15, the distance between the two reciprocating columns 222 is relatively large, and the connecting seat 16 and the connecting rod 161 are both in a horizontal state. The outer surface of the reciprocating column 222 adopts a groove design that fits against the outer surface of the limiting strip 221, which can ensure that the reciprocating column 222 always moves horizontally within the through groove 151, thereby ensuring that the upper surface of the circular block 163 is parallel to the top of the guide column 15.

[0044] The process of removing blade 2:

[0045] When the blade 2 needs to be replaced due to wear, maintenance, or other reasons, the blade 2 is disassembled using the connector 22.

[0046] Ensure the hydraulic shear is in a stopped state, shut down the hydraulic system, and push the dustproof plate 164. The dustproof plate 164 and the guide column 15 will shift relative to each other, exposing the circular groove 152. Use a screwdriver or other rod-shaped object to vertically insert into the circular groove 152. After contacting the circular block 163, the circular block 163 will move vertically towards the bottom of the inner wall of the circular groove 152 via the connecting rod 162. The reciprocating column 222 can slide horizontally under the action of the limiting strip 221. The reciprocating column 222 is connected to the connecting rod 162 via the connecting rod 161 at the outer end of the connecting seat 16. The end of the connecting rod 161 near the connecting rod 162 is vertically downward. The connecting rod 161 gradually changes from an initial horizontal state to an inclined state. Correspondingly, the end of the connecting rod 161 near the connecting seat 16 is horizontal and moves towards the axis of the guide column 15. The reciprocating column 222 slides horizontally inside the through groove 151, overcoming the elastic force of the spring 224. The two reciprocating columns 222 move towards each other, approaching one another. When the lower surface of the circular block 163 is in contact with the bottom of the inner wall of the circular groove 152, the reciprocating columns 222 are in a fully retracted state, and the outer surface of their snap-fit ​​design disengages from the inner wall surface of the groove. The connecting piece 22 is in a retracted state and no longer fixes or restricts the blade 2. Along the direction of the placement groove 142, the blade 2 is smoothly pulled out from the placement groove 142 of the tool holder 14, completing the disassembly. The dust cover 164 is pushed again to return it to its initial position.

[0047] The process of installing blade 2:

[0048] Take out the required blade 2 and slide it vertically into the bottom of the inner wall of the placement groove 142. The two ends of the placement groove 142 are designed with dovetail grooves, and the blade 2 fits against its inner wall surface, ensuring the stability of the blade 2 in the horizontal direction. The blade 2 has a groove inside, and the bottom edge of the groove is designed with a conical surface. The groove is a rotating structure, and its axis coincides with the axis of the guide post 15. During the process of placing the blade 2 into the placement groove 142, the outer end of the guide post 15 passes into the groove inside the blade 2. The side of the reciprocating post 222 away from the circular groove 152 adopts a snap-fit ​​design, which can be divided into an upper conical section and a lower annular section. Correspondingly, the groove is also segmented, with an upper conical groove section and a lower annular groove section, which can be matched one by one.

[0049] During this process, the conical surface on the bottom side of the slot comes into contact with the cone-shaped section of the upper part of the reciprocating column 222. Under the action of the conical surface, the reciprocating column 222 contracts into the through groove 151. One end of the spring 224 comes into contact with the connecting ring 223, and the other end comes into contact with the inner wall of the through groove 151. After the connecting ring 223 moves, the spring 224 is compressed. The distance between the two reciprocating columns 222 decreases, and the connecting rod 161 gradually changes to an inclined state. Under the action of the connecting rod 162, the circular block 163 slides vertically along the inside of the circular groove 152. As the blade 2 continues to press down towards the bottom of the placement groove 142, the snap-fit ​​section of the reciprocating column 222 away from the circular groove 152 corresponds one-to-one with the groove inside the blade 2. The spring 224 restores its elastic potential energy and pushes the reciprocating column 222 towards the inner wall of the groove through the connecting ring 223. The annular section of the reciprocating column 222 fits into the annular groove section of the groove in the blade 2. The two engage with each other, thus connecting the blade 2 to the tool holder 14 as a whole through the guide column 15, thereby completing the installation of the blade 2.

[0050] The process of unfolding the two blade holders 14 in the hydraulic shears:

[0051] In the initial state, the piston rods of the two cylinders 13 are fully retracted and not extended, applying no thrust to the tool holder 14. The hydraulic oil inside the cylinders 13 is stationary, the pressure in the front and rear chambers of the cylinders 13 is balanced, and no pressure difference is generated. The cylinders 13 are in a static, ready-to-use state. The tool holder 14 remains stationary and does not shift or rotate. The two tool holders 14 are in a closed state, with the placement groove 142 of one tool holder 14 positioned above the placement groove 142 of the other tool holder 14. The adjacent surfaces of the two cutting blades 2 are in contact with each other. Within the same tool holder 14, there is a gap between the adjacent surfaces of the cutting blades 2 and the placement groove 142. The connecting plate 17 is located closest to the tool holder 14 within its stroke range, and the distance between the connecting plate 17 and the lower surface of the tool holder 14 is small, so the compression spring 171 is compressed. The bottom end of the limiting post 181 is flush with the lower surface of the support frame 18.

[0052] The base 1 is connected to an external hydraulic system. After the blade 2 is installed, the hydraulic system is activated. Supported by the machine body 12 and the rotating disk 11, the cylinder 13 retracts, and its output drives the tool holder 14 to rotate around the shaft 141. The shaft 141 is fixedly connected to one end of the tool holder 14. While the tool holder 14 rotates, the shaft 141 and the tool holder 14 rotate synchronously in the forward direction. A gear ring 183 is fixedly connected to the outer surface of the shaft 141. The gear ring 183 also rotates synchronously and drives the gear ring 182 to rotate via the transmission chain 184. The gear ring 183 has a larger diameter, while the gear ring 182 has a smaller diameter and a higher rotational speed. It is made of high-strength material and has undergone hardening treatment. During equipment operation, the outer surface of the tool holder 14 is provided with a protective shell to cover related components such as the second gear ring 183, the transmission chain 184, and the first gear ring 182. This effectively prevents foreign objects such as dust and debris from entering and prevents the transmission chain 184 from jamming with the second gear ring 183 and the first gear ring 182, or from experiencing accelerated wear.

[0053] When the gear ring 182 rotates, the limiting post 181 rotates synchronously through the sliding groove 1811 on the outer surface of the gear ring 182. The limiting post 181 and the intermediate post 154 are integrally molded, so the intermediate post 154 also rotates synchronously. The outer circumferential surface of the intermediate post 154 is provided with a threaded groove 1541, and the inner wall of the slot hole inside the tool holder 14 that contacts the outer surface of the intermediate post 154 is provided with a spiral strip that mates with the threaded groove 1541. Taking the lower blade holder 14 as an example, in this state, the intermediate column 154 rotates and descends relative to the blade holder 14. Since the intermediate column 154 has a connecting member 22 inside, the reciprocating column 222 in the extended state of the connecting member 22 rotates synchronously with the intermediate column 154, sliding against the groove of the rotating structure in the blade 2. The intermediate column 154 drives the blade 2 to return downwards. The blade 2, the limiting column 181, and the connecting plate 17 descend synchronously, and the compression spring 171 gradually recovers its elastic potential energy until the lower surface of the blade 2 is completely against the bottom of the inner wall of the placement groove 142. At this time, the angle between the two blade holders 14 is relatively large, ready to cut external objects, and the gap between the two blades 2 in the vertical direction is relatively large.

[0054] The process of closing the two blade holders 14 in the hydraulic shear:

[0055] The hydraulic system is activated, and cylinder 13 unfolds. The output end of cylinder 13 drives the tool holder 14 to rotate around the rotating shaft 141. Gear ring 183 rotates synchronously in the opposite direction with the tool holder 14 via the rotating shaft 141, and drives gear ring 182 to rotate in the opposite direction via the transmission chain 184. When gear ring 182 rotates in the opposite direction, the limiting post 181 rotates synchronously through the sliding groove 1811 opened on the outer surface of gear ring 182, and the intermediate post 154 also rotates synchronously. Taking the lower tool holder 14 as an example, in this state, the intermediate column 154 rotates and rises relative to the tool holder 14. Since the intermediate column 154 is provided with a connector 22, the reciprocating column 222 in the connector 22, which is in the unfolded state, rotates synchronously with the intermediate column 154 and slides in contact with the slot of the rotating structure in the blade 2. The intermediate column 154 drives the blade 2 to rise upward. The blade 2, the limiting column 181, and the connecting plate 17 rise synchronously. The compression spring 171 is compressed again. As the included angle between the two tool holders 14 gradually decreases, the gap between the two blades 2 in the vertical direction also gradually decreases.

[0056] During this process, the thickness of the side blade 21 in the vertical direction is greater than the thickness of the blade 2. When there is a gap between the blade 2 and the bottom of the inner wall of the placement groove 142, the outer surface of the side blade 21 is in contact with the outer surface of the blade holder 14, which can prevent debris from entering the placement groove 142 and causing jamming during the shearing process. The dustproof plate 164 covers the circular groove 152 in the use state to prevent dust from entering the sliding mechanism of the connector 22 and extend its service life.

[0057] The cutting blade 2, in conjunction with the side blade 21, shears the material placed within the shearing area. The chip removal groove 211 on the side blade 21 effectively removes metal chips generated during the shearing process. The chip removal groove 211 features a spiral design with a certain incline to reduce jamming and friction. The wear-resistant coating on the surface of the cutting blade 2 effectively resists adhesion and wear caused by high temperature and high pressure during shearing, ensuring shearing quality and cutting edge life. After shearing is completed, the hydraulic system controls the cylinder 13 to move in the reverse direction, and the tool holder 14 drives the cutting blade 2 to reset, preparing for the next shearing operation.

[0058] In summary, this hydraulic shear has the following advantages:

[0059] Advantage 1: The inclined arc chip groove 211 on the side blade 21 effectively discharges shearing waste chips, reduces adhesion and clogging, reduces wear risk, and maintains shearing efficiency.

[0060] Advantage 2: The connecting piece 22, connecting seat 16, connecting rod 161, connecting rod 162, and circular block 163 enable rapid locking and releasing of the blade 2. During disassembly, simply push the dust cover 164 to expose the opening of the circular groove 152, and use a screwdriver or similar rod-like object to push the circular block 163, causing the reciprocating column 222 to retract and releasing the blade 2. During installation, the tapered design of the blade 2 causes the reciprocating column 222 to automatically retract, and the spring 224 automatically locks the blade 2 upon returning to its original position. The installation and disassembly of the blade 2 are simple, requiring no complex tools, only a screwdriver or similar simple tool. Throughout the process, the hydraulic shear structure is stable and easy to operate, significantly saving time and labor costs in blade 2 replacement and maintenance, and improving work efficiency and equipment utilization.

[0061] Thirdly, when the two blade holders 14 approach each other, the gap between the blades 2 gradually decreases, enabling the blades 2 to exert a squeezing and shearing effect on the material. As the gap continues to shrink, the shearing force applied to the material gradually increases. When the shearing force exceeds the shear strength of the material, the material will be sheared. The design of the gradually decreasing gap between the two blades 2 allows the blades 2 and the side blades 21 to more accurately conform to the material to be sheared, ensuring a flat and smooth shearing surface, reducing defects such as burrs and deformation, and improving the shearing quality.

[0062] Fourthly, for materials of varying thicknesses, the gradually decreasing blade gap 2 better adapts to changes in size, ensuring the hydraulic shear maintains good shearing performance throughout the shearing process. This avoids situations where the shearing is incomplete due to an excessively large gap between the two blades 2, or impossible to shear due to an excessively small gap. Frequent manual adjustment of the blade gap 2 is unnecessary, saving adjustment time and improving equipment production efficiency.

[0063] Fifthly, the gradually decreasing blade gap allows the shearing force to be distributed more evenly on the material being sheared during the shearing process. This avoids the shearing force concentrating in a localized area due to an excessively large blade gap, which could cause shearing difficulties or damage to the blades, thus improving shearing efficiency and the service life of the blades. It also enables the hydraulic system to transmit energy more efficiently during the shearing process, improving the stability and reliability of the equipment. After one shearing cycle is completed, the blade gap automatically returns to its initial state during the return stroke of the cutter holder 14, preparing for the next shearing cycle. This allows for efficient continuous production and facilitates continuous operation of the hydraulic shears.

[0064] Advantage 6: The blade 2 moves reciprocally within the placement groove 142 as the blade holder 14 opens and closes, effectively discharging debris from the chip removal groove 211. As the two blade holders 14 gradually close, the gap between the two blades 2 gradually decreases, shearing external objects. The resulting debris enters the chip removal groove 211, and as it is sheared, the debris moves towards the connecting plate 17 along the spiral guide of the chip removal groove 211. After shearing, the angle between the two blade holders 14 gradually increases, and the distance between the two blades 2 increases until they are fully open. Under the action of the compression spring 171, the blade 2 is completely pressed against the bottom of the inner wall of the placement groove 142, allowing vibration to be generated inside the chip removal groove 211. The remaining debris is shaken off by the chip removal groove 211 to the outside of the blade holder 14 and finally discharged from the working area of ​​the hydraulic shear. This effectively prevents debris from accumulating in the placement groove 142, preventing jamming and ensuring smooth movement of the blade 2 within the placement groove 142 and normal operation of the hydraulic shear. The design of this blade 2, which works in conjunction with the chip removal groove 211, enables chip removal during the opening and closing of the blade holder 14. This not only improves the stability and reliability of the hydraulic shears but also reduces equipment failures and maintenance frequency caused by chip accumulation, thereby enhancing overall work efficiency.

[0065] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A dual-cylinder hydraulic shear with anti-adhesive wear spiral groove blades, characterized in that, include: The base (1) is rotatably connected to the body housing (12) via a rotating disk (11) on its outer surface. A hydraulic cylinder (13) is rotatably connected to the side of the body housing (12). A tool holder (14) is rotatably connected to the output end of the hydraulic cylinder (13). The tool holder (14) is rotatably connected to the inside of the body housing (12) via a rotating shaft (141) at one end. A guide post (15) is slidably connected to the tool holder (14) via a placement groove (142) on its outer surface. The blade (2) is fitted to the outer surface of the guide post (15) through a slot opened inside it, and the outer surface of the blade (2) slides against the inner wall surface of the placement groove (142). A side blade (21) is fixedly connected to the side of the blade (2). The blade (2) and the side blade (21) are designed as an integral piece. A chip removal groove (211) is opened on the outer surface of the side blade (21). The guide post (15) is provided with a connector (22) for assembling and disassembling the blade (2) through a through groove (151) opened inside it. The connector (22) includes a limiting strip (221) fixedly connected to the inner wall of the through groove (151). The inside of the through groove (151) is provided with a reciprocating column (222) that slides against the outer surface of the limiting strip (221). A connecting ring (223) is fixedly connected to the outer surface of the reciprocating column (222). Two reciprocating columns (222) are provided, and the two reciprocating columns (222) are symmetrically distributed around the guide column (15). A spring (224) is fitted on the outer circumference of the reciprocating column (222) and fits against the outer surface of the connecting ring (223). The side of the spring (224) away from the connecting ring (223) is connected to the inner wall of the through groove (151). A circular groove (152) is opened inside the guide column (15) and connects to the inside of the through groove (151). The reciprocating column (222) is rotatably connected to a connecting rod (161) through a connecting seat (16) fixed on the side of the reciprocating column (222) near the circular groove (152). The end of the connecting rod (161) away from the connecting seat (16) is rotatably connected to a connecting rod (162) that slides against the inner wall of the circular groove (152). A circular block (163) is fixedly connected between the two connecting rods (162).

2. The anti-adhesive wear spiral groove blade double-cylinder hydraulic shear according to claim 1, characterized in that: The upper surface of the guide post (15) is damped and slidably connected to a dustproof plate (164), and the outer surface of the reciprocating post (222) adopts a snap-fit ​​design that fits against the inner wall surface of the slot.

3. The anti-adhesive wear spiral groove blade double-cylinder hydraulic shear according to claim 2, characterized in that: The guide post (15) is provided in three parts. The guide post (15) located on both sides is called the side post (153), and the guide post (15) located in the middle is called the middle post (154). The outer end of the side post (153) passes through the tool holder (14) and is fixedly connected to the connecting plate (17). The outer circumference of the side post (153) is fitted with a compression spring (171) that fits against the outer surface of the tool holder (14).

4. The anti-adhesive wear spiral groove blade double-cylinder hydraulic shear according to claim 3, characterized in that: The tool holder (14) is fixedly connected to a support frame (18) on the side near the connecting plate (17). The outer end of the intermediate column (154) passes through the connecting plate (17) and is fixedly connected to a limiting column (181). The limiting column (181) is fitted with a toothed ring (182) through a groove (1811) on its outer surface. The upper surface of the toothed ring (182) is rotatably connected to the lower surface of the support frame (18). The outer surface of the rotating shaft (141) is fixedly connected to a toothed ring (183). The outer surface of the tool holder (14) is provided with a transmission chain (184) that meshes with the outer surfaces of the toothed ring (182) and the toothed ring (183).

5. The anti-adhesive wear spiral groove blade double-cylinder hydraulic shear according to claim 4, characterized in that: The intermediate column (154) fits into the inside of the tool holder (14) through a threaded groove (1541) on its outer surface. Multiple chip removal grooves (211) are provided, and the chip removal grooves (211) adopt a spiral design.

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