Hydraulic shearing device for large waste metal

By designing a hydraulic shear device for changing shear components and locking components, the problem of low shear efficiency in the prior art is solved, and fast and efficient shearing of metal plates of various thicknesses is achieved.

CN119839356APending Publication Date: 2025-04-18HEBEI CUIGU RENEWABLE RESOURCES DEVELOPMENT CO LTD
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Patent Information

Application Number
CN202510270491.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-03-07
Publication Date
2025-04-18

AI Technical Summary

Technical Problem

When existing hydraulically driven shearing machines cut thinner and thick scrap metal plates, the shear stroke becomes longer and the two shear intervals are also long, resulting in low shear efficiency.

Method used

A large-piece scrap metal hydraulic shear device is designed, using a transformable shear component and locking component. The connecting rod structure driven by the motor realizes the rapid reciprocating movement of the fourth hydraulic rod, and combines the synergy between the electric clamping hand and the hydraulic rod to achieve rapid shearing of the metal plate.

Benefits of technology

Fast shearing of thin metal sheets is achieved, and through the use of locking components, the stroke is increased to meet the shear needs of thicker metal sheets, and the overall shear efficiency is improved.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to the technical field of metal shearing, and discloses a large waste metal hydraulic shearing device which comprises a placing assembly. A feeding assembly; a propulsion assembly; a pressing assembly; a fixing assembly; the fixing assembly comprises a locking assembly and a shearing assembly. According to the thin metal plate shearing device, through the structure of a connecting rod formed among a convertible shearing assembly, a long rod, a second short rod and a fourth hydraulic rod, the fourth hydraulic rod can be pushed in a reciprocating mode to move up and down in a transverse strip, at the moment, a cutter can also rapidly move up and down in a reciprocating mode to complete rapid shearing of a thin metal plate, and after the fourth hydraulic rod is locked by a locking assembly, shearing is completed. By means of the technical scheme, the technical problems that the shearing force of a hydraulically-driven cutter is large, the shearing stroke is lengthened, the interval time of two times of shearing is long, and rapid shearing cannot be achieved for thin waste metal plates are solved.
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Description

Technical Field

[0001] The embodiments of the present disclosure relate to the technical field of metal shearing, and in particular, to a hydraulic shearing device for large scrap metal. Background Art

[0002] Scrap metal refers to metal materials and metal products that have lost their original use value in production and life. However, after recycling, scrap metal can play an important role in protecting the environment, saving resources and promoting sustainable economic development. For large scrap metal plates, shearing machines can be used to cut them into appropriate sizes and then put them into other production steps. A shearing machine is a device that can use mechanical force to shear metal. Its working principle is that the tool is driven by a transmission mechanism to make relative movements such as pressing down, raising the worktable, or both at the same time, so that the cutting edge contacts the workpiece and applies sufficient shearing force. When the shearing force is greater than the material's bearing capacity, the material undergoes plastic deformation and eventually breaks and separates, completing the cutting process. However, in actual use, existing equipment uses hydraulic transmission for shearing. The hydraulically driven tool has a strong shearing force, but the shearing stroke becomes longer and the interval between two shears is also long. For thinner scrap metal plates, it is impossible to shear quickly, resulting in low shearing efficiency. Summary of the invention

[0003] In order to overcome the above-mentioned defects, the embodiments of the present invention provide a hydraulic shearing device for large scrap metal, which solves the technical problem that the existing equipment in the prior art all adopts hydraulic transmission for shearing. The hydraulically driven tool has a strong shearing force, but the shearing stroke becomes longer and the interval between two shearings is also long. It is impossible to quickly shear thinner scrap metal plates, thus resulting in low shearing efficiency.

[0004] The present disclosure provides the following technical solutions: a large-scale scrap metal hydraulic shearing device, comprising a placing component, a feeding component is fixedly installed on the top of the placing component, and a linkage propulsion mechanism, which comprises a propulsion component, the propulsion component is fixedly installed on the left side of the placing component, a pressing component is fixedly installed on the top of the propulsion component, a fixing component is fixedly installed on the back of the pressing component, and a locking component is fixedly installed in the middle of the fixing component; A shearing assembly, the shearing assembly includes a motor, the output shaft of the motor is fixedly connected to a circular shaft, the outer edge of the circular shaft is fixedly connected to two first gears, the top outer edges of the two first gears are meshed with second gears, the center positions of the two second gears are penetrated by a connecting piece, the eccentric positions of the two second gears are movably hinged with first short rods, the outer sides of the two first short rods are movably meshed with long rods, the other ends of the two long rods are meshed with two second short rods, the bottoms of the two groups of the second short rods are movably hinged with fourth hydraulic rods, and the telescopic ends of the two fourth hydraulic rods are fixedly connected with cutters.

[0005] Preferably, the placement assembly includes four support seats, the inner sides of the four support seats are fixedly connected with a base plate, an L-shaped frame is fixedly installed on the right side of the base plate, and a track is opened on the inner side of the top of the L-shaped frame.

[0006] Preferably, the loading assembly includes a first moving block, which is movably clamped in the track, and the bottom of the first moving block is fixedly connected to two first hydraulic rods, the telescopic ends of the two first hydraulic rods are fixedly connected to a "F" frame, and a plurality of electric suction cups are fixedly installed on the "F" frame.

[0007] Preferably, the propulsion assembly includes a table top, which is fixedly installed on the left side of four support seats, and two first grooves are opened on the top of the table top, and second movable blocks are movably connected in two of the first grooves, and the front sides of two of the second movable blocks are fixedly connected to the electric clamp and the second hydraulic rod, and a fixing bar is fixedly installed on the left side of the top of the table top, and two telescopic rods are fixedly installed on the right side of the fixing bar.

[0008] Preferably, the first moving block and the second moving block are both driven by electric wheels, and the two second hydraulic rods are fixedly installed on the outside of the electric gripper.

[0009] Preferably, the clamping assembly includes a U-shaped frame, which is fixedly installed on the top of the table top, and three third hydraulic rods are fixedly installed on the inner side of the top of the U-shaped frame. The telescopic ends of the three third hydraulic rods are fixedly connected to rubber blocks, and springs are movably sleeved between the fixed ends of the three third hydraulic rods and the rubber blocks.

[0010] Preferably, the fixing assembly comprises two vertical plates, the two vertical plates are fixedly mounted on the back of the table top, the inner sides of the two vertical plates are fixedly connected with fixing blocks, and the inner sides of the two fixing blocks are rotatably mounted with tracks.

[0011] Preferably, the motor is fixedly mounted on the inner wall of the left vertical plate, the circular shaft is movably hinged on the inner wall of the vertical plate, and the connecting piece between the two second gears is fixedly connected to the inner wall of the vertical plate.

[0012] Preferably, the locking assembly includes a horizontal bar, which is fixedly mounted on the inner walls of the two vertical plates, and two groups of second grooves are provided on the top of the horizontal bar, and four groups of protrusions are movably clamped in the two groups of second grooves, and a first perforated plate is fixedly connected to the top of each two groups of protrusions, and two tooth grooves are provided inside the first perforated plate, and third gears are meshed in the two tooth grooves, and a second perforated plate is slidably mounted on the top of the first perforated plate, and two tooth grooves are also provided inside the second perforated plate, and a bidirectional hydraulic rod is fixedly connected between the two second perforated plates, and the fixed end of the bidirectional hydraulic rod is fixedly connected to the horizontal bar.

[0013] Preferably, the holes of the first and second perforated plates are both elliptical and are stacked in an offset manner, and the fourth hydraulic rod is installed through the holes formed by the stacking of the first and second perforated plates, and the fourth hydraulic rod is installed through the vertical direction of the horizontal bar.

[0014] The beneficial effects of the present invention are as follows: 1. The present invention is equipped with a convertible shearing assembly, a connecting rod structure formed between the long rod, the second short rod and the fourth hydraulic rod, which can reciprocate and push the fourth hydraulic rod to move up and down in the horizontal bar. At this time, the cutter will also move back and forth quickly up and down to complete the rapid shearing of thin metal plates. When the fourth hydraulic rod is locked by the locking assembly, the stroke of the two fourth hydraulic rods is increased to push the cutter to perform hydraulic shearing to complete the shearing of thicker metal plates, thereby solving the problem that the hydraulically driven tool has a large shearing force, but the shearing stroke becomes longer, the interval between two shears is also long, and it is impossible to quickly shear thinner scrap metal plates.

[0015] 2. The present invention increases the stroke of the bidirectional hydraulic rod by installing a locking assembly. The two second perforated plates will be pushed to the left and right sides at the same time. The tooth grooves provided therein will drive the third gear to rotate. When the third gear rotates, the rotational force will be transmitted to the two first perforated plates at the bottom. By means of another set of tooth grooves, the first perforated plate can move in the opposite direction to the second perforated plate in the second groove through the protrusion. At this time, the upper and lower sets of second perforated plates and the first perforated plate will clamp the fixed ends of the two fourth hydraulic rods at the top of the horizontal bar and lock them, thereby completing the switching between the two shearing methods.

[0016] 3. The present invention is equipped with a newly designed propulsion assembly. When the metal plate falls on the top of the table, the stroke of the two telescopic rods is first increased, and the edge of the metal plate is pushed to the fixed bar and then stopped to complete the positioning. At this time, the two second movable blocks are moved close to the metal plate. After the two electric clamps clamp the metal plate, they can continue to push it in the direction of the clamping assembly in the first groove. When the metal plate is sheared, for the remaining metal blocks, the clamping of the electric clamps can be released first, and then the stroke of the second hydraulic rod can be increased to push the remaining metal blocks into the crawler to complete the discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following is a brief introduction to the drawings required for use in the description of the embodiments of the present disclosure. Obviously, the drawings described below are only some exemplary embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can also be obtained based on the contents of the exemplary embodiments of the present disclosure and these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a side view of the overall structure of the present invention; Figure 3 This is a schematic diagram of the structure of the feeding assembly of the present invention; Figure 4 This is a schematic diagram of the structure of the clamping assembly of the present invention; Figure 5 For the present invention Figure 4 A schematic diagram of the structure enlargement in the middle; Figure 6 It is a schematic diagram of the structure of the fixing assembly of the present invention; Figure 7 This is a schematic diagram of the shear assembly structure of the present invention; Figure 8 A top view of the locking assembly structure of the present invention; Fig. 9 This is a bottom view of the locking assembly structure of the present invention.

[0019] In the figure: 1. Placement assembly; 2. Loading assembly; 3. Pushing assembly; 4. Pressing assembly; 5. Fixing assembly; 6. Shearing assembly; 7. Locking assembly; 11. Support seat; 12. Bottom plate; 13. L-shaped frame; 14. Track; 21. First moving block; 22. First hydraulic rod; 23. Feng-shaped frame; 24. Electric suction cup; 31. Table; 32. First groove; 33. Second moving block; 34. Electric gripper; 35. Second hydraulic rod; 36. Fixing bar; 37. Telescopic rod; 41. U Frame; 42, third hydraulic rod; 43, rubber block; 44, spring; 51, vertical plate; 52, fixed block; 53, crawler track; 61, motor; 62, round shaft; 63, first gear; 64, second gear; 65, first short rod; 66, long rod; 67, second short rod; 68, fourth hydraulic rod; 69, cutter; 71, horizontal bar; 72, second groove; 73, convex block; 74, first punch plate; 75, tooth groove; 76, third gear; 77, second punch plate; 78, bidirectional hydraulic rod. DETAILED DESCRIPTION

[0020] The present disclosure is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present disclosure, rather than to limit the present disclosure.

[0021] In order to simplify the drawings, only the parts related to the disclosure are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0022] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this disclosure can be understood according to specific circumstances.

[0023] In the present disclosure, unless otherwise expressly specified and limited, a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being “above”, “above”, and “above” a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0024] In the description of this embodiment, terms such as "up", "down", "left", and "right" and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present disclosure.

[0025] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0026] like Figures 1 to 9 As shown, the embodiment of the present invention provides a large-scale scrap metal hydraulic shearing device, including a placing component 1, a feeding component 2 is fixedly installed on the top of the placing component 1, and also includes a linkage propulsion mechanism, which includes a propulsion component 3, the propulsion component 3 is fixedly installed on the left side of the placing component 1, a clamping component 4 is fixedly installed on the top of the propulsion component 3, a fixing component 5 is fixedly installed on the back of the clamping component 4, and a locking component 7 is fixedly installed in the middle of the fixing component 5; The shearing assembly 6 comprises a motor 61, the output shaft of the motor 61 is fixedly connected to a circular shaft 62, the outer edge of the circular shaft 62 is fixedly connected to two first gears 63, the top outer edges of the two first gears 63 are meshed with second gears 64, the center positions of the two second gears 64 are penetrated and connected with a connecting piece, the eccentric positions of the two second gears 64 are movably hinged with first short rods 65, the outer sides of the two first short rods 65 are movably meshed with long rods 66, the other ends of the two long rods 66 are meshed with two second short rods 67, the bottoms of the two groups of second short rods 67 are movably hinged with fourth hydraulic rods 68, and the telescopic ends of the two fourth hydraulic rods 68 are fixedly connected with cutters 69; The motor 61 is started to rotate clockwise, and the first gear 63 is driven to rotate through the circular shaft 62. After the first gear 63 drives the second gear 64 to rotate, the first short rod 65 eccentrically installed with the second gear 64 will be driven to form a connecting rod structure with the long rod 66, the second short rod 67 and the fourth hydraulic rod 68, and the fourth hydraulic rod 68 is reciprocated to move up and down in the horizontal bar 71. At this time, the cutter 69 will also move up and down quickly, and then combined with the pushing action of the second moving block 33 and the clamping cooperation of the clamping assembly 4, the metal plate is quickly sheared. When the fourth hydraulic rod 68 is locked by the locking assembly 7, the stroke of the second hydraulic rod 68 is increased by two more times, and the cutter 69 is pushed to perform hydraulic shearing, and the second moving block 33 and the clamping assembly 4 are repeatedly cooperated to complete the shearing of thicker metal plates. The placement assembly 1 includes four support seats 11, the inner sides of the four support seats 11 are fixedly connected with a bottom plate 12, an L-shaped frame 13 is fixedly installed on the right side of the bottom plate 12, and a track 14 is opened on the inner side of the top of the L-shaped frame 13; The metal plates to be sheared are pre-placed inside the support seat 11 and the bottom plate 12; The loading assembly 2 includes a first moving block 21, which is movably connected to the track 14. Two first hydraulic rods 22 are fixedly connected to the bottom of the first moving block 21. The telescopic ends of the two first hydraulic rods 22 are fixedly connected to a "F" frame 23. A plurality of electric suction cups 24 are fixedly installed on the "F" frame 23. When feeding is required, the first hydraulic rod 22 is first started to drive the Feng-shaped frame 23 to approach the metal plate. After the multiple electric suction cups 24 adsorb the metal plate, the first hydraulic rod 22 shortens its stroke and lifts the metal plate above the height of the support seat 11. The metal plate is moved in the track 14 by the first hydraulic rod 22 and placed on the top of the table 31, and the adsorption of the multiple electric suction cups 24 is released; The propulsion assembly 3 includes a table 31, which is fixedly installed on the left side of the four support seats 11. Two first grooves 32 are opened on the top of the table 31, and the second moving blocks 33 are movably connected in the two first grooves 32. The front sides of the two second moving blocks 33 are fixedly connected to the electric clamp 34 and the second hydraulic rod 35. A fixing bar 36 is fixedly installed on the left side of the top of the table 31, and two telescopic rods 37 are fixedly installed on the right side of the fixing bar 36; the first moving block 21 and the second moving block 33 are both driven by electric wheels, and the two second hydraulic rods 35 are fixedly installed on the outside of the electric clamp 34; When the metal plate falls on the top of the table 31, the travel of the two telescopic rods 37 is first increased, and the edge of the metal plate is pushed to the fixed bar 36 and then stopped to complete the positioning. At this time, the two second moving blocks 33 are moved close to the metal plate, and the two electric grippers 34 clamp the metal plate and continue to push it in the direction of the clamping assembly 4 in the first groove 32; The clamping assembly 4 includes a U-shaped frame 41, which is fixedly mounted on the top of the table 31. Three third hydraulic rods 42 are fixedly mounted on the inner side of the top of the U-shaped frame 41. The telescopic ends of the three third hydraulic rods 42 are fixedly connected to rubber blocks 43. Springs 44 are movably sleeved between the fixed ends of the three third hydraulic rods 42 and the rubber blocks 43. When the metal plate is clamped and pushed, and the predetermined cutting portion exceeds the cutter 69, the stroke of the three springs 44 is increased first, and the rubber block 43 will firmly clamp a part of the metal plate, so that it can increase the friction with the table 31 to prevent deviation, and the rubber block 43 can play a buffering role when touching the metal plate; The fixing assembly 5 includes two vertical plates 51, which are fixedly mounted on the back of the table 31. The inner sides of the two vertical plates 51 are fixedly connected with fixing blocks 52, and the inner sides of the two fixing blocks 52 are rotatably mounted with tracks 53; the motor 61 is fixedly mounted on the inner wall of the left vertical plate 51, the round shaft 62 is movably hinged on the inner wall of the vertical plate 51, and the connecting piece between the two second gears 64 is fixedly connected to the inner wall of the vertical plate 51; After the metal strips are cut, they fall onto the crawler belt 53 and the material can be discharged. The locking assembly 7 includes a horizontal bar 71, which is fixedly mounted on the inner walls of the two vertical plates 51. Two groups of second grooves 72 are provided on the top of the horizontal bar 71. Four groups of protrusions 73 are movably connected in the two groups of second grooves 72. A first punch plate 74 is fixedly connected to the top of each two groups of protrusions 73. Two tooth grooves 75 are provided inside the first punch plate 74. The two tooth grooves 75 are meshed with third gears 76. A second punch plate 77 is slidably mounted on the top of the first punch plate 74. Two tooth grooves 75 are also provided inside the second punch plate 77. A bidirectional hydraulic rod 78 is fixedly connected between the two second punch plates 77. The fixed end of the bidirectional hydraulic rod 78 is fixedly connected to the horizontal bar 71. The punching shapes of the first punch plate 74 and the second punch plate 77 are both elliptical and staggered and stacked. The fourth hydraulic rod 68 is installed through the hole formed by the stacking of the first punch plate 74 and the second punch plate 77. The fourth hydraulic rod 68 is installed through the vertical direction of the horizontal bar 71. By increasing the stroke of the bidirectional hydraulic rod 78, the two second punched plates 77 will be pushed to the left and right sides at the same time, and the tooth grooves 75 provided therein will drive the third gear 76 to rotate. While the third gear 76 rotates, the rotational force will be transmitted to the two first punched plates 74 at the bottom. Through another set of tooth grooves 75, the first punched plate 74 can move in the opposite direction to the second punched plate 77 in the second groove 72 through the protrusion 73. At this time, the upper and lower sets of second punched plates 77 and first punched plates 74 will clamp the fixed ends of the two fourth hydraulic rods 68 at the top of the horizontal bar 71 to lock them.

[0027] Working principle: When using the present invention, the metal plate to be sheared is first placed in advance inside the support seat 11 and the bottom plate 12. When feeding is required, the first hydraulic rod 22 is first started to drive the "Feng" frame 23 to approach the metal plate. After the multiple electric suction cups 24 adsorb the metal plate, the first hydraulic rod 22 shortens its stroke and lifts the metal plate above the height of the support seat 11. The metal plate is moved in the track 14 by the first hydraulic rod 22 and placed on the top of the table 31, and the adsorption of the multiple electric suction cups 24 is released. When the metal plate falls on the top of the table 31, the travel of the two telescopic rods 37 is first increased, and the edge of the metal plate is pushed to the fixed bar 36 and then stopped to complete the positioning. At this time, the two second moving blocks 33 are moved close to the metal plate, and the two electric grippers 34 clamp the metal plate and continue to push it in the direction of the clamping assembly 4 in the first groove 32; When the metal plate is clamped and pushed, and the predetermined cutting portion exceeds the cutter 69, the stroke of the three springs 44 is increased first, and the rubber block 43 will firmly clamp a part of the metal plate, so that it can increase the friction with the table 31 to prevent deviation, and the rubber block 43 can play a buffering role when touching the metal plate; If the metal plate is a thin plate at this time, the motor 61 is directly started to rotate clockwise, and the first gear 63 is driven to rotate through the circular shaft 62. After the first gear 63 drives the second gear 64 to rotate, the first short rod 65 eccentrically installed with the second gear 64 will be driven to form a connecting rod structure with the long rod 66, the second short rod 67 and the fourth hydraulic rod 68, and the fourth hydraulic rod 68 is reciprocated to move up and down in the horizontal bar 71. At this time, the cutter 69 will also move up and down quickly, and combined with the pushing action of the second moving block 33 and the clamping cooperation of the clamping assembly 4, the metal plate is quickly sheared. The metal strip after shearing will fall on the crawler 53 to complete the discharge. When the metal plate to be sheared is thicker, the motor 61 is stopped and the stroke of the bidirectional hydraulic rod 78 is increased. The two second punching plates 77 are pushed to the left and right sides at the same time. The tooth grooves 75 provided therein drive the third gear 76 to rotate. When the third gear 76 rotates, the rotational force is transmitted to the two first punching plates 74 at the bottom. Through another set of tooth grooves 75, the first punching plate 74 can move in the second groove 72 in the opposite direction to the second punching plate 77 through the protrusion 73. At this time, the upper and lower sets of second punching plates 7 7 and the first punch plate 74 will clamp the fixed ends of the two fourth hydraulic rods 68 at the top of the horizontal bar 71. After clamping, the stroke of the two fourth hydraulic rods 68 will be increased to push the cutter 69 to perform hydraulic shearing, and the second movable block 33 and the clamping assembly 4 will cooperate repeatedly to complete the shearing of the thicker metal plate; when the metal plate is sheared, for the remaining metal blocks, the clamping of the electric clamp 34 can be released first, and then the stroke of the second hydraulic rod 35 can be increased to push the remaining metal blocks into the crawler 53 to complete the discharge.

[0028] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure rather than to limit it. Although the present disclosure has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present disclosure may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present disclosure, which should be included in the scope of the claims of the present disclosure.

Claims

1. A hydraulic shearing device for large scrap metal, comprising a placement component (1), characterized in that: A loading component (2) is fixedly mounted on the top of the placement component (1), and further comprises: A linkage propulsion mechanism, comprising a propulsion component (3), the propulsion component (3) being fixedly mounted on the left side of the placement component (1), a clamping component (4) being fixedly mounted on the top of the propulsion component (3), a fixing component (5) being fixedly mounted on the back of the clamping component (4), and a locking component (7) being fixedly mounted in the middle of the fixing component (5); A shearing assembly (6), the shearing assembly (6) comprising a motor (61), the output shaft of the motor (61) being fixedly connected to a circular shaft (62), the outer edge of the circular shaft (62) being fixedly connected to two first gears (63), the top outer edges of the two first gears (63) being meshed with a second gear (64), the center positions of the two second gears (64) being connected through a connecting piece, the eccentric positions of the two second gears (64) being movably hinged with a first short rod (65), the outer sides of the two first short rods (65) being movably meshed with a long rod (66), the other ends of the two long rods (66) being meshed with two second short rods (67), the bottoms of the two sets of the second short rods (67) being movably hinged with a fourth hydraulic rod (68), and the telescopic ends of the two fourth hydraulic rods (68) being fixedly connected to a cutter (69).

2. A large scrap metal hydraulic shearing device according to claim 1, characterized in that: The placement assembly (1) comprises four support seats (11), the inner sides of the four support seats (11) are fixedly connected to a bottom plate (12), an L-shaped frame (13) is fixedly installed on the right side of the bottom plate (12), and a track (14) is provided on the inner side of the top of the L-shaped frame (13).

3. A large scrap metal hydraulic shearing device according to claim 2, characterized in that: The loading assembly (2) comprises a first moving block (21), the first moving block (21) being movably clamped in the track (14), two first hydraulic rods (22) being fixedly connected to the bottom of the first moving block (21), telescopic ends of the two first hydraulic rods (22) being fixedly connected to a "F"-shaped frame (23), and a plurality of electric suction cups (24) being fixedly mounted on the "F"-shaped frame (23).

4. A large scrap metal hydraulic shearing device according to claim 2, characterized in that: The propulsion assembly (3) comprises a table top (31), the table top (31) being fixedly mounted on the left side of the four support seats (11), the top of the table top (31) being provided with two first grooves (32), the two first grooves (32) being movably connected with a second moving block (33), the front sides of the two second moving blocks (33) being fixedly connected with an electric gripper (34) and a second hydraulic rod (35), the top left side of the table top (31) being fixedly mounted with a fixing bar (36), and the right side of the fixing bar (36) being fixedly mounted with two telescopic rods (37).

5. The large scrap metal hydraulic shearing device according to claim 3 is characterized by: The first moving block (21) and the second moving block (33) are both driven by electric wheels, and the two second hydraulic rods (35) are fixedly mounted on the outside of the electric gripper (34).

6. A large scrap metal hydraulic shearing device according to claim 5, characterized in that: The clamping assembly (4) comprises a U-shaped frame (41), the U-shaped frame (41) being fixedly mounted on the top of the tabletop (31), three third hydraulic rods (42) being fixedly mounted on the inner side of the top of the U-shaped frame (41), the telescopic ends of the three third hydraulic rods (42) being fixedly connected to rubber blocks (43), and springs (44) being movably sleeved between the fixed ends of the three third hydraulic rods (42) and the rubber blocks (43).

7. A large scrap metal hydraulic shearing device according to claim 4, characterized in that: The fixing assembly (5) comprises two vertical plates (51), the two vertical plates (51) being fixedly mounted on the back of the table top (31), the inner sides of the two vertical plates (51) being fixedly connected to fixing blocks (52), and the inner sides of the two fixing blocks (52) being rotatably mounted with crawlers (53).

8. The large scrap metal hydraulic shearing device according to claim 1 is characterized by: The motor (61) is fixedly mounted on the inner wall of the left vertical plate (51), the circular shaft (62) is movably hinged on the inner wall of the vertical plate (51), and the connecting piece between the two second gears (64) is fixedly connected to the inner wall of the vertical plate (51).

9. A large scrap metal hydraulic shearing device according to claim 8, characterized in that: The locking assembly (7) comprises a horizontal bar (71), wherein the horizontal bar (71) is fixedly mounted on the inner walls of the two vertical plates (51), and two groups of second grooves (72) are provided on the top of the horizontal bar (71), and four groups of protrusions (73) are movably engaged in the two groups of second grooves (72), and the tops of every two groups of protrusions (73) are fixedly connected with a first punching plate (74), and the first punching plate (74) has two tooth grooves (75) formed inside, and the two tooth grooves (75) are meshed with a third gear (76), and a second punching plate (77) is slidably mounted on the top of the first punching plate (74), and the second punching plate (77) also has two tooth grooves (75) formed inside, and a bidirectional hydraulic rod (78) is fixedly connected between the two second punching plates (77), and the fixed end of the bidirectional hydraulic rod (78) is fixedly connected to the horizontal bar (71).

10. A large scrap metal hydraulic shearing device according to claim 9, characterized in that: The perforations of the first perforated plate (74) and the second perforated plate (77) are both elliptical and are stacked in an offset manner; the fourth hydraulic rod (68) is installed through holes formed by the stacking of the first perforated plate (74) and the second perforated plate (77); the fourth hydraulic rod (68) is installed through a vertical direction of the horizontal bar (71).