A crushing device for scrapping automobiles

Abstract

The invention discloses a shredding device for scrapped cars, which relates to the technical field related to scrapped cars, and comprises a base and a shredding box body arranged on the base, wherein shredding rollers are arranged in the shredding box body, wherein the number of the shredding rollers is two, and the two shredding rollers are driven by a drive motor to rotate relative to each other to shred the scrapped cars, and further comprises an overload protection device, which comprises a monitoring module for monitoring the jamming of materials between the two shredding rollers and a control module for controlling the rotation direction of the drive motor; when the jamming occurs between the two shredding rollers, the control module controls each shredding roller to rotate alternately in the reverse and forward directions based on the signal of the monitoring module.

Description

Technical Field

[0001] The invention relates to the technical field related to scrapped vehicles, in particular to a crushing device for scrapped vehicles. Background Art

[0002] It is well known that motor vehicles that have reached the scrap standard or, although not reaching the scrap standard, have serious damage to the engine or chassis and are found to fail to meet the technical conditions for motor vehicle operation safety or the motor vehicle pollutant emission standards are called scrapped vehicles.

[0003] When a car is scrapped, it needs to be dismantled. That is, the steering gear, engine, gearbox, frame beams, front and rear axles of the vehicle need to be destructively separated. The electronic files of the scrapped vehicle are retained, and the useful parts such as plastics, rubber and scrap steel are recycled. After destructive treatment, the scrap steel and iron are directly sent to the steel mill for processing.

[0004] Among them, scrap steel and scrap iron are destructively treated, that is, they are shredded using a shredder, such as the patent with announcement number CN220514278U, announcement date February 23, 2024, and name "A crushing device for scrapped automobiles", which includes a conveyor belt and a crushing box, wherein the crushing box is installed at the upper end of the conveyor belt, and the upper end and side end of the crushing box are provided with a protective crushing assembly, which can protect the scrapped automobile parts from being placed in the crushing box for crushing, so as to prevent the scrapped automobile parts from jumping out, and relates to the technical field of scrapped automobile processing: by arranging a protective cover above the crushing box, the scrapped automobile parts crushed inside the crushing box are blocked and protected from jumping out, so as to prevent the scrapped automobile parts from jumping out during the crushing process, and at the same time, by arranging a rotatable turntable on one side of the crushing box, the turntable can not only drive the two groups of material boxes to rotate alternately, and alternately feed the scrapped automobile parts into the crushing box, but also prevent the splashing of the scrapped automobile parts, thereby improving the safety of the scrapped automobile parts during feeding and crushing.

[0005] The disadvantage of the prior art is that when the shredder dismantles stacked or oversized materials, such as the different metal strengths of the body of a scrapped car, the scrapped car will be flattened before being crushed, causing the frame and shell of the body to be compressed into one piece, and the hardness of the frame is much higher than the hardness of the shell. This will not only cause the shredding efficiency of the shredder to decrease, but may also cause the shredder to get stuck in severe cases. Summary of the invention

[0006] The purpose of the present invention is to provide a crushing device for scrapping automobiles to solve the technical problems in the related art.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] A shredding device for scrapped cars comprises a base and a shredding box arranged on the base, wherein shredding rollers are arranged in the shredding box, wherein the number of the shredding rollers is two, and the two shredding rollers are driven by a gear transmission for power transmission, and the two shredding rollers are driven by a driving motor to rotate relative to each other to shred the scrapped cars, and further comprises an overload protection device, which comprises a monitoring module for monitoring material jamming between the two shredding rollers and a control module for controlling the rotation direction of the driving motor; when material jamming occurs between the two shredding rollers, the control module controls each shredding roller to rotate alternately in reverse and forward directions based on a signal from the monitoring module.

[0009] In the above, the two shredding rollers include a fixed roller with a fixed rotation position on the shredding box and a movable roller with a non-fixed rotation position; the control module includes an electric control module for controlling the rotation direction of the drive motor and a mechanical drive module for controlling the movable roller to move away from the fixed roller; when material is stuck between the movable roller and the fixed roller, the mechanical drive module drives the movable roller to move back and forth between moving away from and approaching the fixed roller, the interval between the movable roller and the fixed roller widens to return the unshredded scrapped car part, and the interval between the movable roller and the fixed roller narrows to shred and pull the unshredded scrapped car part.

[0010] The mechanical drive module mentioned above includes a limit rod fixedly connected to the shredding box body, a main swing rod is rotatably provided on the roller shaft of the movable roller, a secondary swing rod is rotatably provided on the limit rod, the main swing rod and the secondary swing rod are hinged, and a limit piece is provided on the main swing rod; when there is no material stuck between the movable roller and the fixed roller, the main swing rod and the secondary swing rod are in a straight line state, the limit piece does not limit the rotation of the movable roller, the main swing rod and the secondary swing rod cannot swing relative to each other, and the position of the movable roller is restricted; when material is stuck between the movable roller and the fixed roller, the limit piece limits the rotation of the movable roller in the reverse rotation stroke of the movable roller, the movable roller exerts a force on the main swing rod, the main swing rod and the secondary swing rod swing relative to each other, and the angle between the two gradually becomes smaller, and the movable roller moves away from the fixed roller.

[0011] As mentioned above, the limit member includes a limit ring fixed on the roller shaft of the movable roller, a plurality of limit grooves are opened on the limit ring along the circumferential direction, a limit rod and an auxiliary rod are slidably provided in the main rocker arm, a first elastic member is provided between the auxiliary rod and the main rocker arm, power is transmitted between the limit rod and the auxiliary rod through the first transmission member, and under the action of the first transmission member, the limit rod and the auxiliary rod move relative to each other; when the main rocker arm and the auxiliary rocker arm are in a straight line state, the auxiliary rod is squeezed by the auxiliary rocker arm, the limit rod and the limit groove are not completely connected, and the forward rotation of the movable roller is not hindered by the limit rod; when the material is stuck between the movable roller and the fixed roller, the reverse rotation of the movable roller is hindered by the limit rod, and the movable roller drives the main rocker arm to swing.

[0012] As mentioned above, the first transmission member includes a first rack provided on the limiting plug rod and a second rack provided on the auxiliary rod, the teeth of the first rack and the second rack are arranged opposite to each other, and a transmission gear is rotatably provided on the main rocker arm, the first rack is meshed with the transmission gear, and the second rack is meshed with the transmission gear.

[0013] As mentioned above, the shredding box is also provided with a first combing plate group for combing the movable roller and a second combing plate group for combing the fixed roller; when the movable roller moves away from the fixed roller, the first combing plate group moves together with the movable roller.

[0014] As mentioned above, a second transmission member is provided between the first combing plate group and the second combing plate group. When the first combing plate group follows the moving roller and moves away from the fixed roller, the first combing plate group drives the second combing plate group to move through the second transmission member, and the second combing plate pushes the unshredded scrapped car parts toward the moving roller.

[0015] As mentioned above, the shredding box body is provided with a slide for moving the second combing plate group, the slide includes a vertical section and an arc section, and the shredding box body is provided with a locking mechanism, when the second combing plate group slides from the vertical section to the arc section based on the power of the first combing plate group, the locking mechanism locks the fixed roller based on the power of the second combing plate group; when the second combing plate slides in the arc section in a direction away from the vertical section based on the power of the first combing plate, the first combing plate group pushes the unshredded scrapped car parts toward the moving roller.

[0016] As mentioned above, the second transmission member includes a first rod body connected to the first combing plate group and a second rod body connected to the second combing plate group. The first rod body is provided with a groove, and the second rod body is provided with a protrusion. During the moving stroke of the first rod body, the groove is first plugged into the protrusion, and the second combing plate group first slides from the vertical section to the arc section, and the first rod body drives the second rod body to move together, and the second combing plate group then slides in the arc section in a direction away from the vertical section.

[0017] The locking mechanism comprises a plurality of locking teeth arranged in the circumferential direction of the fixed roller and a locking plug rod slidably arranged on the shredding box body, a second elastic member is provided between the locking plug rod and the shredding box body, a third rod body is provided on the locking plug rod, and a locking groove is also provided on the shredding box body, a locking slide bar is slidably provided in the locking groove, and the third rod body is fixedly connected to the locking slide bar, and the locking groove comprises an unlocking position and a locking position: when there is no material stuck between the movable roller and the fixed roller, the locking slide bar is in the unlocking position, and when the material is stuck between the movable roller and the fixed roller, the second combing plate group slides from the vertical section to the arc section, the second combing plate group squeezes the third rod body to drive the locking slide bar to move to the locking position, and the locking plug rod and the locking teeth are plugged to lock the fixed roller; when the second combing plate group slides from the vertical section to the end away from the arc section, the second combing plate group squeezes the third rod body to drive the locking slide bar to move to the unlocking position, and the locking plug rod is disengaged from the locking teeth to release the lock on the fixed roller.

[0018] The beneficial effect of the present invention is that by setting a monitoring module to monitor whether there is material jamming between the two shredding rollers, a signal of material jamming can be obtained in time when the two shredding rollers are jammed, and then the control module controls the drive motor to drive each shredding roller to rotate alternately in the reverse and forward directions based on the signal of the monitoring module, and the two shredding rollers rotate relative to each other, so that the stuck scrapped car will be alternately withdrawn and fed in the shredding box. After the material jamming problem is solved, the control module can continue to control the drive motor to drive each shredding roller to rotate forwardly to shred the scrapped car. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of a crushing device for scrapping automobiles provided in an embodiment of the present invention;

[0021] Figure 2 A schematic diagram of a three-dimensional structure from a first perspective of the internal structure of a crushing device for scrapping automobiles provided in an embodiment of the present invention;

[0022] Figure 3 A schematic diagram of a second-view stereoscopic structure of the internal structure of a vehicle scrapping crushing device provided in an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the internal structure of a crushing device for scrapping automobiles provided in an embodiment of the present invention;

[0024] Figure 5 for Figure 4 A is an enlarged structural diagram;

[0025] Figure 6 This is a schematic diagram of the top view of a crushing device for scrapped vehicles provided in an embodiment of the present invention;

[0026] Figure 7 for Figure 6 Schematic diagram of the cross-sectional structure at BB in FIG.

[0027] Figure 8 for Figure 7 The enlarged structural diagram at C in FIG.

[0028] Fig. 9The present invention is a schematic diagram of the planar structure of a locking groove of a crushing device for scrapped vehicles provided in an embodiment of the present invention.

[0029] Description of reference numerals:

[0030] 1. Base; 10. Shredder box; 11. Driving motor; 12. Fixed roller; 13. Moving roller; 14. Main gear; 15. Sub gear; 16. Slide; 17. Limit rod; 18. Main swing rod; 19. Sub swing rod; 20. Limit piece; 200. Limit ring; 201. Limit groove; 202. Limit rod; 203. Auxiliary rod; 204. First side; 205. Second side; 21. First combing plate group; 22. Second Combing plate group; 23, slideway; 230, vertical section; 231, arc section; 24, locking mechanism; 240, locking teeth; 241, locking plug rod; 242, third rod body; 243, locking slide rod; 25, first rod body; 26, groove; 27, second rod body; 28, protrusion; 29, locking groove; 290, first section; 291, second section; 292, third section; 293, fourth section; 30, adaptation groove. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solution of the present invention, Figure 1 To Attachment Fig. 9 The present invention is further described in detail.

[0032] The embodiment of the present invention provides a shredding device for scrapped cars, comprising a base 1 and a shredding box 10 arranged on the base 1, wherein shredding rollers are arranged in the shredding box 10, wherein the number of the shredding rollers is two, and the power is transmitted between the two shredding rollers by gear transmission, and the two shredding rollers are driven by a driving motor 11 to rotate relative to each other to shred the scrapped cars, and further comprising an overload protection device, which comprises a monitoring module for monitoring material jamming between the two shredding rollers and a control module for controlling the rotation direction of the driving motor 11; when material jamming occurs between the two shredding rollers, the control module controls each shredding roller to rotate alternately in the reverse and forward directions based on a signal from the monitoring module.

[0033] Specifically, the base 1 is used to support the weight of the shredding box 10, two shredding rollers, a driving motor 11 and the shredded object. The feeding port of the shredding box 10 is in the shape of a funnel with a large top and a small bottom. A conveying mechanism can be set at the feeding port of the shredding box 10 to transport the shredded metal. When the shredded scrapped car is fed into the feeding port, a crane can be used. In order to prevent the entire weight of the scrapped car from acting on the two shredding rollers, the crane can be used to lift it up during the shredding process of the scrapped car, and then the traction of the two shredding rollers is used to make the scrapped car move down at a certain speed. The shredding roller is a long roller on which a plurality of shredding knives are arranged axially, and the shredding knives are composed of an annular mounting seat and a plurality of shredding knives on the annular mounting seat. The shredding rollers are composed of a plurality of rectangular blade heads uniformly fixed along the circumferential direction on the shaped mounting seat, and the plurality of shredding blades on the two shredding rollers are alternately arranged in the axial direction, and the two adjacent shredding blades can form traction and shearing effects on the scrapped car. The two shredding rollers are driven by a gear transmission mechanism, that is, the roller shaft end of one of the shredding rollers is fixedly connected to the main gear 14, and the main gear 14 is connected to the power output end of the driving motor 11, and the roller shaft end of the other shredding roller is fixedly connected to the sub-gear 15, and the main gear 14 is meshed with the sub-gear 15, then the two shredding rollers rotate in opposite directions. For the convenience of description and understanding, when the two shredding rollers shred the scrapped car, they all rotate in the forward direction, and vice versa.

[0034] In the prior art, when dismantling stacked or oversized materials, for example, the metal strength of the body of a scrapped car is different, and the scrapped car will be flattened before being crushed, resulting in the frame and shell of the body being compressed into one piece, and the hardness of the frame is much higher than the hardness of the shell, which will not only cause a decrease in the shredding efficiency, but also cause a jamming situation in severe cases. Therefore, in this embodiment, an overload protection device is provided, and the overload protection device includes a monitoring module for monitoring whether there is material jamming between the two shredding rollers, and a control module for controlling the forward and reverse rotation of the drive motor 11, wherein the monitoring module can be a camera device or an overload protector for monitoring the current of the drive motor 11 (for the prior art, no further elaboration is made, and it is not specifically shown in the figure), and the control module is for The circuit system of the drive motor 11 is set, so that when the problem of material jamming occurs between the two shredding rollers, the monitoring module can obtain the jamming signal in time, and the control module can adjust the rotation direction of the drive motor 11 in time based on the model of the monitoring module, by controlling the drive motor 11 to alternate between reverse and forward rotation, that is, the scrapped car will alternately return and feed materials in the shredding box 10. After many times, if the monitoring module does not detect that the material is jammed between the two shredding rollers, the scrapped car can be shredded afterwards. If the monitoring module detects that the material is still jammed between the two shredding rollers, it means that the scrapped car cannot be shredded. At this time, the control module will brake the drive motor 11 and send out an alarm signal so that the staff can obtain the jamming signal in time and adjust and repair the equipment.

[0035] Preferably, the two shredding rollers include a fixed roller 12 with a fixed rotation position on the shredding box 10 and a movable roller 13 with a non-fixed rotation position; the control module includes an electric control module for controlling the rotation direction of the drive motor 11 and a mechanical drive module for controlling the movable roller 13 to move away from the fixed roller 12; when material is stuck between the movable roller 13 and the fixed roller 12, the mechanical drive module drives the movable roller 13 to move back and forth between moving away from and approaching the fixed roller 12, the interval between the movable roller 13 and the fixed roller 12 is widened to return the unshredded scrapped car parts, and the interval between the movable roller 13 and the fixed roller 12 is narrowed to shred and pull the unshredded scrapped car parts.

[0036] Specifically, in the aforementioned embodiment, the distance between the two shredding rollers is difficult to adjust as required, especially when the material is stuck, whether the shredding roller rotates forward or reverses after the material is stuck, there is still a risk of material jamming. Therefore, in this embodiment, in order to avoid the problem of material jamming during the material return process, the two shredding rollers are respectively arranged as a fixed roller 12 with a fixed rotation position and a movable roller 13 with a non-fixed rotation position, that is, a slide groove 16 is provided on the shredding box 10 for the movable roller 13 to move away from or close to the fixed roller 12, and the control module also includes an electric control module for driving the rotation direction of the motor 11 and a mechanical drive module for controlling the movable roller 13 to move away from the fixed roller 12. In this way, when the material jam occurs between the fixed roller 12 and the movable roller 13, the movable roller 13 rotates in the opposite direction, and the mechanical drive module drives the movable roller 13 to move away from the fixed roller 12. The distance between the movable roller 13 and the fixed roller 12 becomes larger, and the scrapped car is lifted upward with the help of a crane, so that the scrapped car can be prevented from getting stuck with the fixed roller 12 and the movable roller 13 to a certain extent. When the mechanical drive module drives the movable roller 13 to approach the fixed roller 12, the movable roller 13 and the fixed roller 12 rotate forwardly to shred the scrapped car. Repeating this process many times can effectively improve the shredding effect of the scrapped car after the material is stuck, thereby reducing the number of reverse-forward rotation alternations of the drive motor 11. If the scrapped car cannot be shredded after many times, the fixed roller 12 and the movable roller 13 that are far away from each other also make it more convenient for the staff to take out the metal remaining in the shredding box 10, wherein the drive motor 11 is connected to the movable roller 13, that is, the drive motor 11 can move with the movement of the movable roller 13.

[0037] Furthermore, the mechanical drive module includes a limit rod 17 fixedly connected to the shredding box body 10, a main swing rod 18 is rotatably provided on the roller shaft of the movable roller 13, and a secondary swing rod 19 is rotatably provided on the limit rod 17, the main swing rod 18 and the secondary swing rod 19 are hinged, and a limit piece 20 is provided on the main swing rod 18; when there is no material stuck between the movable roller 13 and the fixed roller 12, the main swing rod 18 and the secondary swing rod 19 are in a straight line state, the limit piece 20 does not limit the rotation of the movable roller 13, the main swing rod 18 and the secondary swing rod 19 cannot swing relative to each other, and the position of the movable roller 13 is limited; when the material is stuck between the movable roller 13 and the fixed roller 12, the limit piece 20 limits the rotation of the movable roller 13 in the reverse rotation stroke of the movable roller 13, and the movable roller 13 generates a force on the main swing rod 18, the main swing rod 18 and the secondary swing rod 19 swing relative to each other, and the angle between the two gradually decreases, and the movable roller 13 is away from the fixed roller 12.

[0038] Specifically, the mechanical drive module can be active or passive, that is, in this embodiment, the power of the reverse rotation of the movable roller 13 is used to realize the change of its own position (away from the fixed roller 12), that is, the limit rod 17 is a circular rod fixedly connected to the shredding box 10, and it is at the same horizontal height as the roller axis of the movable roller 13, and the moving direction of the movable roller 13 is also at a changed horizontal height, the main swing arm 18 and the auxiliary swing arm 19 are hinged, and the hinge position is located above the thickness direction of the two (the thickness direction is parallel to the vertical direction), when the main swing arm 18 and the auxiliary swing arm 19 are in a straight line state, the ends of the two that are close to each other are in contact, and they cannot swing downward at the hinge point, that is, when there is no material stuck between the movable roller 13 and the fixed roller 12, the swing arm and the auxiliary swing arm 19 are in a straight line state, and the movable roller 13 is The movable roller 13 does not apply force to the main rocker arm 18 during rotation. Even if there is friction between the two, the movable roller 13 cannot drive the main rocker arm 18 to swing upward with the roller axis of the movable roller 13 as the swing axis. If the movable roller 13 is to rotate in the opposite direction and drive itself away from the fixed roller 12, the reverse rotation of the movable roller 13 needs to generate a force on the main rocker arm 18, so that the main rocker arm 18 can swing upward at the hinge with the auxiliary rocker arm 19, that is, when the movable roller 13 rotates in the opposite direction, the limit member 20 can limit the rotation of the movable roller 13, and the limit member 20 hinders the relative rotation between the movable roller 13 and the main rocker arm 18. In this way, when the main rocker arm 18 and the auxiliary rocker arm 19 swing relative to each other, the angle between the two will gradually decrease from 180 degrees, and the movable roller 13 will also be driven away from the fixed roller 12.

[0039] In the preferred embodiment, the limiting member 20 includes a limiting ring 200 fixed on the roller shaft of the movable roller 13, and a plurality of limiting grooves 201 are opened on the limiting ring 200 along the circumferential direction. A limiting plug rod 202 and an auxiliary rod 203 are slidably provided in the main rocking rod 18, and a first elastic member is provided between the auxiliary rod 203 and the main rocking rod 18. Power is transmitted between the limiting plug rod 202 and the auxiliary rod 203 through a first transmission member, and under the action of the first transmission member, the limiting plug rod 202 and the auxiliary rod 203 move relative to each other; when the main rocking rod 18 and the auxiliary rocking rod 19 are in a straight line state, the auxiliary rod 203 is squeezed by the auxiliary rocking rod 19, the limiting plug rod 202 is not completely plugged into the limiting groove 201, and the positive rotation of the movable roller 13 is not hindered by the limiting plug rod 202; when the material is stuck between the movable roller 13 and the fixed roller 12, the reverse rotation of the movable roller 13 is hindered by the limiting plug rod 202, and the movable roller 13 drives the main rocking rod 18 to swing.

[0040] Specifically, the limiting plug rod 202 can be plugged into any limiting groove 201, and the end of the limiting plug rod 202 includes a first surface 204 that is wedge-matched with one side of the limiting groove 201 and a second surface 205 that abuts against the other side of the limiting groove 201. When there is no material stuck between the movable roller 13 and the fixed roller 12, the movable roller 13 rotates forward, and one side of the limiting groove 201 and the first surface 204 of the limiting plug rod 202 are wedge-matched to form an extrusion action, so that the limiting plug rod 202 is retracted into the main swing rod 18, which will not hinder the forward rotation of the movable roller 13. When the material is stuck between the roller 12 and the movable roller 13, the reverse rotation of the movable roller 13 will make the other side of the limit groove 201 abut against the second side 205 of the limit rod 202, and the extrusion between the two cannot be relatively moved and separated, so the rotation of the movable roller 13 is hindered by the limit rod 202, and the limit rod 202 is slidably arranged in the main swing rod 18. Since the limit rod 202 cannot fall off the limit groove 201, the reverse rotation of the movable roller 13 will give the main swing rod 18 a swinging force, and in this process, the auxiliary swing rod 19 has a great impact on the auxiliary swing rod 18. The squeezing effect of the rod 203 gradually disappears, and the auxiliary swing rod 19 drives the limiting rod 202 to gradually penetrate into the limiting groove 201 through the first transmission member. In this way, when the movable roller 13 rotates forward again, the limiting rod 202 is plugged into the limiting groove 201, and the two cannot be separated. Then the movable roller 13 drives the main swing rod 18 to swing in the opposite direction (towards the position where the main swing rod 18 and the auxiliary swing rod 19 are in a straight line), until the main swing rod 18 and the auxiliary swing rod 19 are in a straight line. In this process, the auxiliary swing rod 19 will produce a squeezing effect on the auxiliary rod 203. When the auxiliary rod 203 is used, the limiting rod 202 is gradually pulled out of the limiting groove 201 and returned to the initial position through the first transmission member, wherein the first transmission member can realize the relative movement of the auxiliary rod 203 and the limiting rod 202, that is, the first transmission member includes a first rack provided on the limiting rod 202 and a second rack provided on the auxiliary rod 203, the teeth of the first rack and the second rack are arranged opposite to each other, and a transmission gear is rotatably provided on the main rocker arm 18, the first rack is meshed with the transmission gear, and the second rack is meshed with the transmission gear.

[0041] Preferably, the shredding box 10 is further provided with a first combing plate group 21 for combing the movable roller 13 and a second combing plate group 22 for combing the fixed roller 12; when the movable roller 13 moves away from the fixed roller 12, the first combing plate group 21 moves with the movable roller 13.

[0042] Specifically, the first combing plate group 21 is composed of a first main rod and a plurality of first combing plates arranged in sequence in the length direction of the first main rod, and the plurality of first combing plates and the plurality of shredding knives on the movable roller 13 are arranged alternately in the axial direction. The second combing plate group 22 is composed of a second main rod and a plurality of second combing plates arranged in sequence in the length direction of the second main rod, and the plurality of second combing plates and the plurality of shredding knives on the fixed roller 12 are arranged alternately in the axial direction. The first combing plate group 21 cleans the metal debris sandwiched between the adjacent shredding knives on the movable roller 13, and can It forms a shearing effect with the shredding knife to cut the metal stuck on the shredding knife; the second combing plate cleans the metal debris sandwiched between adjacent shredding knives on the fixed roller 12, and can form a shearing effect with the shredding knife to cut the metal stuck on the shredding knife, wherein the first combing plate group 21 is slidably arranged on the shredding box 10, and its sliding direction is consistent with the moving direction of the movable roller 13, and the roller shaft of the movable roller 13 is connected to the first main rod by a connecting rod, that is, the movement of the movable roller 13 pushes the first combing plate group 21 to move together through the connecting rod.

[0043] Furthermore, a second transmission member is provided between the first combing plate group 21 and the second combing plate group 22. When the first combing plate group 21 follows the moving roller 13 to move away from the fixed roller 12, the first combing plate group 21 drives the second combing plate group 22 to move via the second transmission member, and the second combing plate group 22 pushes the unshredded scrapped car parts toward the moving roller 13.

[0044] Specifically, in the process of the movable roller 13 and the fixed roller 12 moving away from each other, the main gear 14 connected to the movable roller 13 and the sub-gear 15 connected to the fixed roller 12 will rotate relative to each other before they are completely separated. That is, in this process, the movable roller 13 and the fixed roller 12 cooperate to return the unshredded scrapped car upward, and in the stroke after the main gear 14 and the sub-gear 15 are completely separated, the movable roller 13 is still rotating in the opposite direction, and the reverse rotation of the movable roller 13 can be used to drive the shredded scrapped car to move upward. Therefore, in this embodiment, a second transmission member is arranged between the first combing plate group 21 and the second combing plate group 22. In the process of the first combing plate group 21 following the movable roller 13 to move away from the fixed roller 12, the second combing plate group 22 can be driven by the second transmission member to approach the unshredded scrapped car and push it to keep in contact with the movable roller 13.

[0045] Furthermore, the shredding box 10 is provided with a slide 23 for moving the second combing plate group 22, and the slide 23 includes a vertical section 230 and an arc section 231. The shredding box 10 is provided with a locking mechanism 24. When the second combing plate group 22 slides from the vertical section 230 toward the arc section 231 based on the power of the first combing plate group 21, the locking mechanism 24 locks the fixed roller 12 based on the power of the second combing plate group 22; when the second combing plate slides in the arc section 231 in a direction away from the vertical section 230 based on the power of the first combing plate, the first combing plate group 21 pushes the unshredded scrapped car part toward the dynamic roller 13.

[0046] Specifically, after the main gear 14 and the sub-gear 15 are completely disengaged, the rotation of the fixed roller 12 is not restricted. In this embodiment, a locking mechanism 24 is provided to lock the rotation of the fixed roller 12, so that the reversely rotating movable roller 13 and the locked fixed roller 12 can form a tearing action on the scrapped car, thereby tearing the part that is difficult to be shredded at the beginning, so as to improve the subsequent shredding effect, that is, the movement of the second combing plate group 22 is divided into two sections. In the first section 290, during this process, the main gear 14 and the sub-gear 15 are not completely disengaged, The fixed roller 12 cannot be locked yet, so at this time the first combing plate group 21 moves along the vertical section 230 toward the arc section 231, and after the main gear 14 and the sub-gear 15 are completely disengaged, the first combing plate group 21 is still in the vertical section 230, as the first combing plate group 21 continues to move, the locking mechanism 24 can lock the rotation of the fixed roller 12 based on the force of the first combing plate group 21, the second section 291, and then the first combing plate group 21 enters the arc section 231, gradually pushing the scrapped car to contact with the moving roller 13.

[0047] The second transmission member should satisfy the movement of the two sections of the second combing plate group 22, that is, in the preferred embodiment, the second transmission member includes a first rod body 25 connected to the first combing plate group 21 and a second rod body 27 connected to the second combing plate group 22. The first rod body 25 is provided with a groove 26, and the second rod body 27 is provided with a protrusion 28. During the movement of the first rod body 25, the groove 26 is first plugged into the protrusion 28, and the second combing plate group 22 first slides from the vertical section 230 to the arc section 231, and the first rod body 25 drives the second rod body 27 to move together, and the second combing plate group 22 then slides in the arc section 231 in the direction away from the vertical section 230.

[0048] Specifically, in the moving direction of the movable roller 13 away from the fixed roller 12, the side of the groove 26 close to the fixed roller 12 is a vertical surface, and the other side is an inclined surface, and the side of the protrusion 28 close to the fixed roller 12 is also a vertical surface, and the other side is also an inclined surface. In this way, in the process of the first rod body 25 following the movable roller 13 to move away from the fixed roller 12, the protrusion 28 and the groove 26 will gradually approach and plug into each other. When the protrusion 28 and the groove 26 are plugged into each other, the protrusion 28 moves downward vertically, and the second combing plate group 22 will first move downward along the vertical section 230. After the vertical surface of the protrusion 28 contacts the vertical surface of the groove 26, the first rod body 25 can drive the second rod body 27 to move together, and the second combing plate group 22 moves along the arc section 231, wherein the second rod body 27 is provided with an adaptation groove 30 that adapts to the position of the second combing plate group 22.

[0049] The locking mechanism 24 includes a plurality of locking teeth 240 arranged circumferentially of the fixed roller 12 and a locking plug rod 241 slidably arranged on the shredding box 10. The locking plug rod 241 can be plugged with the locking teeth 240 at any position of the circumference of the fixed roller 12 to limit the rotation of the fixed roller 12. A second elastic member is provided between the locking plug rod 241 and the shredding box 10. Under the elastic force of the second elastic member, the locking plug rod 241 and the locking teeth 240 tend to be always disconnected. A third rod body 242 is provided on the locking plug rod 241. The third rod body 242 is slidably arranged on the locking plug rod 241, and the sliding direction is perpendicular to the sliding direction of the locking plug rod 241. A locking groove 29 is also provided on the shredding box 10. A locking slide bar 243 is slidably provided in the locking groove 29. The third rod body 2 42 is fixedly connected to the locking slide bar 243, and the locking groove 29 includes an unlocking position and a locking position: when there is no material stuck between the movable roller 13 and the fixed roller 12, the locking slide bar 243 is in the unlocking position; when material is stuck between the movable roller 13 and the fixed roller 12, the second combing plate group 22 slides from the vertical section 230 to the arc section 231, and the second combing plate group 22 squeezes the third rod body 242 to drive the locking slide bar 243 to move to the locking position, and the locking plug rod 241 and the locking tooth 240 are plugged to lock the fixed roller 12; when the second combing plate group 22 slides from the vertical section 230 to the end away from the arc section 231, the second combing plate group 22 squeezes the third rod body 242 to drive the locking slide bar 243 to move to the unlocking position, and the locking plug rod 241 and the locking tooth 240 are disengaged, thereby releasing the lock on the fixed roller 12.

[0050] That is, the locking groove 29 includes a first section 290, a second section 291, a third section 292 and a fourth section 293, and the first section 290, the second section 291, the third section 292 and the fourth section 293 are connected end to end in sequence, and the depth of the end of the first section 290 close to the second section 291 is less than the depth of the second section 291, the depth of the end of the second section 291 close to the third section 292 is less than the depth of the third section 292, the depth of the end of the third section 292 close to the fourth section 293 is less than the depth of the fourth section 293, and the depth of the end of the fourth section 293 close to the first section 290 is less than the depth of the first section 290, that is, the locking slide bar It is impossible to move backward from the second section 291 to enter the first section 290, it is impossible to move backward from the third section 292 to enter the second section 291, and it is impossible to move backward from the fourth section 293 to enter the third section 292. For ease of description and understanding, the intersection between the fourth section 293 and the first section 290 is set as the first point, the intersection between the first section 290 and the second section 291 is set as the second point, the intersection between the second section 291 and the third section 292 is set as the third point, and the intersection between the third section 292 and the fourth section 293 is set as the fourth point. In the moving direction of the locking plug 241, the vertical distance between the second point and the fourth point to the first point is The vertical distance from the third point to the first point is smaller than the vertical distance from the second point and the fourth point to the first point, and the second point and the fourth point are the positions where the locking rod 241 and the locking tooth 240 are most deeply inserted, and the third point is the position where the locking rod 241 and the locking tooth 240 are partially inserted. In this way, when the second combing plate group 22 moves along the vertical section 230 toward the arc section 231, the second combing plate group 22 squeezes the third rod body 242, which makes the locking slide bar 243 reach the second point from the first point first, and the elastic force of the second elastic member increases. After the second combing plate group 22 enters the arc section 231, the second combing plate group 22 is pressed by the third rod body 242. Under the action of the second elastic member, the locking slide bar 243 can move from the second point to the third point. At this time, the locking rod 241 is partially plugged into the locking tooth 240 to achieve the locking of the rotation of the fixed roller 12. When the second combing plate group 22 slides in the vertical section 230 in the direction away from the arc section 231, the second combing plate group 22 squeezes the locking slide bar 243 to move from the third point to the fourth point. The elastic force of the second elastic member increases again. After the second combing plate group 22 returns to the end of the vertical section 230 away from the arc section 231, under the action of the rebound force of the second elastic member, the locking slide bar 243 moves from the fourth point to the first point, and the rotation lock of the fixed roller 12 is released.

[0051] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of the protection of the present invention.

Claims

1. A shredding device for scrapped cars, comprising a base and a shredding box arranged on the base, wherein the shredding box is provided with shredding rollers, the number of the shredding rollers is two, and the two shredding rollers are driven by a drive motor to rotate relative to each other to shred the scrapped cars, characterized in that: Also includes: An overload protection device, which includes a monitoring module for monitoring the jamming of materials between the two shredding rollers and a control module for controlling the rotation direction of the drive motor; When material is stuck between the two shredding rollers, the control module controls each shredding roller to rotate alternately in the reverse and forward directions based on the signal from the monitoring module; The two shredding rollers include a fixed roller with a fixed rotation position on the shredding box and a movable roller with a non-fixed rotation position; the control module includes an electric control module for controlling the rotation direction of the driving motor and a mechanical drive module for controlling the movable roller to move away from the fixed roller; when material is stuck between the movable roller and the fixed roller, the mechanical drive module drives the movable roller to move back and forth between moving away from and approaching the fixed roller, the interval between the movable roller and the fixed roller is widened to return the unshredded scrapped car part, and the interval between the movable roller and the fixed roller is narrowed to shred and pull the unshredded scrapped car part; The mechanical driving module includes a limit rod fixedly connected to the shredding box body, a main swing rod is rotatably provided on the roller shaft of the movable roller, a secondary swing rod is rotatably provided on the limit rod, the main swing rod and the secondary swing rod are hinged, and a limit piece is provided on the main swing rod; when there is no material stuck between the movable roller and the fixed roller, the main swing rod and the secondary swing rod are in a straight line state, the limit piece does not limit the rotation of the movable roller, the main swing rod and the secondary swing rod cannot swing relative to each other, and the position of the movable roller is limited; when material is stuck between the movable roller and the fixed roller, the limit piece limits the rotation of the movable roller in the reverse rotation stroke of the movable roller, the movable roller generates a force on the main swing rod, the main swing rod and the secondary swing rod swing relative to each other, and the angle between the two gradually decreases, and the movable roller moves away from the fixed roller.

2. The automobile scrapping crushing device according to claim 1, characterized in that: The limiting member includes a limiting ring fixed on the roller shaft of the movable roller, a plurality of limiting grooves are opened on the limiting ring along the circumferential direction, a limiting plug rod and an auxiliary rod are slidably arranged in the main rocking arm, a first elastic member is arranged between the auxiliary rod and the main rocking arm, power is transmitted between the limiting plug rod and the auxiliary rod through the first transmission member, and under the action of the first transmission member, the limiting plug rod and the auxiliary rod move relative to each other; when the main rocking arm and the auxiliary rocking arm are in a straight line state, the auxiliary rod is squeezed by the auxiliary rocking arm, the limiting plug rod is not completely plugged into the limiting groove, and the positive rotation of the movable roller is not hindered by the limiting plug rod; when material is stuck between the movable roller and the fixed roller, the reverse rotation of the movable roller is hindered by the limiting plug rod, and the movable roller drives the main rocking arm to swing.

3. The automobile scrapping crushing device according to claim 2, characterized in that: The first transmission member includes a first rack provided on the limiting plug rod and a second rack provided on the auxiliary rod, the teeth of the first rack and the second rack are arranged opposite to each other, and a transmission gear is rotatably provided on the main rocker arm, the first rack is meshed with the transmission gear, and the second rack is meshed with the transmission gear.

4. The automobile scrapping crushing device according to claim 1, characterized in that: The shredding box is also provided with a first combing plate group for combing the movable roller and a second combing plate group for combing the fixed roller; when the movable roller moves away from the fixed roller, the first combing plate group moves together with the movable roller.

5. The automobile scrapping crushing device according to claim 4, characterized in that: A second transmission member is provided between the first combing plate group and the second combing plate group. When the first combing plate group follows the moving roller and moves away from the fixed roller, the first combing plate group drives the second combing plate group to move via the second transmission member, and the second combing plate pushes the unshredded scrapped car parts toward the moving roller.

6. The automobile scrapping crushing device according to claim 5, characterized in that: The shredding box body is provided with a slide for the second combing plate group to move, the slide includes a vertical section and an arc section, and the shredding box body is provided with a locking mechanism, when the second combing plate group slides from the vertical section to the arc section based on the power of the first combing plate group, the locking mechanism locks the fixed roller based on the power of the second combing plate group; when the second combing plate slides in the arc section in a direction away from the vertical section based on the power of the first combing plate, the first combing plate group pushes the unshredded scrapped car parts toward the moving roller.

7. The automobile scrapping crushing device according to claim 6, characterized in that: The second transmission member includes a first rod body connected to the first combing plate group and a second rod body connected to the second combing plate group. The first rod body is provided with a groove, and the second rod body is provided with a protrusion. During the movement of the first rod body, the groove is first plugged into the protrusion, and the second combing plate group first slides from the vertical section to the arc section, and the first rod body drives the second rod body to move together, and the second combing plate group then slides in the arc section in a direction away from the vertical section.

8. The automobile scrapping crushing device according to claim 6, characterized in that: The locking mechanism comprises a plurality of locking teeth arranged in the circumferential direction of the fixed roller and a locking plug rod slidably arranged on the shredding box body, a second elastic member is provided between the locking plug rod and the shredding box body, a third rod body is provided on the locking plug rod, and the shredding box body is also provided with a locking groove, a locking sliding bar is slidably provided in the locking groove, and the third rod body is fixedly connected to the locking sliding bar, and the locking groove comprises an unlocking position and a locking position: when there is no material stuck between the movable roller and the fixed roller, the locking sliding bar is in the unlocking position, and when the material is stuck between the movable roller and the fixed roller, the second combing plate group slides from the vertical section to the arc section, the second combing plate group squeezes the third rod body to drive the locking sliding bar to move to the locking position, and the locking plug rod and the locking teeth are plugged to lock the fixed roller; when the second combing plate group slides from the vertical section to the end away from the arc section, the second combing plate group squeezes the third rod body to drive the locking sliding bar to move to the unlocking position, and the locking plug rod is disengaged from the locking teeth to release the lock on the fixed roller.

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