CN214357948U

CN214357948U - Anti-blocking device of shredder

Info

Publication number: CN214357948U
Application number: CN202022387152.5U
Authority: CN
Inventors: 王耀文
Original assignee: Qingdao Haijing Environmental Technology Co Ltd
Current assignee: Qingdao Haijing Environmental Technology Co Ltd
Priority date: 2020-05-13
Filing date: 2020-10-23
Publication date: 2021-10-08
Anticipated expiration: 2030-10-23

Abstract

The utility model provides a shredder anti-blocking device, including shredding mechanism, this shredding mechanism includes the blade disc and locates the feeding storehouse of this blade disc top, still includes to be equipped with in this feeding storehouse and dials material mechanism, should dial inside material mechanism is located the feeding storehouse, including drive arrangement with dial the material device, dial the material device and be connected with drive arrangement, one end is installed on the feeding storehouse lateral wall, the other end can rotate, can do the reciprocating swing of injecing the angle around dialling material device one end, has solved the problem that shredder blocking handled the difficulty.

Description

Anti-blocking device of shredder

Technical Field

The utility model belongs to shredder auxiliary device, concretely relates to a supplementary material that pushes away for shredder prevents the device of shredder putty.

Background

The shredder is a common device for breaking materials and basically comprises a feeding bin, a cutter head, a discharging conveyer, a discharging port, a frame, an electric cabinet, a motor, a speed reducer, a coupling and the like. The working process is as follows: the motor is started, the motor drives the speed reducer to rotate, the speed reducer drives two groups of cutter teeth in the cutter head to rotate relatively through the coupler, materials enter from the feeding bin, are crushed into small-size materials after passing through the cutter teeth, and are conveyed out through the discharge port by the discharge conveying device. Because the components of the crushed materials are complex, particularly when the crushed materials are used for treating household garbage, the conventional shredder is often used in the working process, and the faults of not eating the materials and blocking the machine are often encountered.

The present case utility model people discover through the research, a reason that often causes machine putty card machine trouble lies in: some stickies have been put into in the feeding storehouse, like the tailed dish, materials such as kitchen remains, earth etc. mix or glue with the feeding storehouse with other rubbish, lead to the feeding storehouse to block up, some flexible material, like rope, quilt, sack etc. material involves more around the shredding process, can lead to the interior material winding of feeding storehouse, if the scale is great, also can lead to the material to pile up in the feeding storehouse, can not fall into blade disc storehouse and cutter tooth contact, can not tear. Harder materials such as hard iron blocks, steelyard weight, crowbar and other materials which can not be torn by the cutter teeth are clamped between the cutter teeth so that the cutter teeth can not rotate, and the motor is stopped after overload operation. Once the equipment meets the condition, the material loaded in the bin needs to be completely unloaded manually, and then the material causing the equipment failure is found and removed manually. Not only wastes time and labor, but also has important potential safety hazard. In the process of manually removing materials, the risk that a misoperation worker is bitten by the cutter teeth exists, the misoperation worker is slightly disabled, and the misoperation worker is seriously killed. Meanwhile, the faults of the card machine can cause damage to the equipment, and the common damage is irreparable loss of motor burnout, cutter tooth fracture, rotating shaft distortion and the like.

Therefore, there is an urgent need for an anti-blocking device for a shredder, which is used for the machine to assist in feeding and eliminating the trouble of jamming.

Disclosure of Invention

The utility model aims at providing a shredder anti-blocking device to solve the problem that shredder putty was handled the difficulty.

The specific scheme is as follows: the utility model provides a shredder anti-blocking device, includes shredder mechanism, should shredder mechanism include the blade disc and locate the feeding storehouse of this blade disc top, still including dialling material mechanism:

this dial material mechanism is located the feeding storehouse inside, including drive arrangement and group material device, drive arrangement provides power drive, and preferred hydraulic motor dials the material device and is connected with drive arrangement, and one end is installed on feeding storehouse lateral wall, and the other end can rotate, can do the reciprocating swing of injecing the angle around dialling material device one end.

The utility model discloses a further technical scheme does: the driving device is a hydraulic material shifting motor, and the material shifting device comprises a crank structure and a material shifting rod. One end of the crank is connected to an output shaft of the material poking motor; the upper end of the material poking rod is provided with a pivoting hole which is pivoted on the side wall surface of the feeding bin; the middle part of the material stirring rod is provided with a notch, and the tail end of the crank is inserted into the notch through a sliding block so as to drive the material stirring rod to do reciprocating swing of a limited angle in the feeding bin.

For further improving the material stirring effect, the bottom of the material stirring rod is also provided with a stirring sheet protruding towards the inside, so that the auxiliary feeding is realized, and the technical effect of preventing the garbage materials from adhering to the wall surface is achieved.

The utility model discloses a further technical scheme does: still include pushing equipment:

the pushing mechanism comprises an installation seat connected between the cutter head and the feeding bin, and a garbage pushing outlet is formed in one side of the installation seat;

the mounting seat is movably provided with a material pushing head, and the mounting seat is also provided with a first driving part which is connected with the material pushing head of the connector and drives the material pushing head to move towards the garbage pushing outlet.

The utility model discloses a further technical scheme does: the cutter head comprises a cutter head shell, and a shredding cutter shaft is arranged in the cutter head shell; the mounting seat is fixed on the cutter head shell; the mounting seat comprises a sliding rail assembly and a fixing portion, the material pushing head is slidably mounted on the sliding rail assembly, and the first driving part is arranged on the fixing portion and connected to the material pushing head. The mounting seat is fixed on the cutter head shell, so that the fixing effect is good; the mount pad realizes supporting the steady direction of pushing away the stub bar through setting up slide rail set spare.

The utility model discloses a further technical scheme does: the upper side and the lower side of the cutter head shell are respectively provided with a feeding port and a blanking port, the mounting seat is fixed at the feeding port, and the garbage pushing port is arranged on one side of the mounting seat in the length direction. The garbage pushing opening is arranged on one side of the length direction, so that the material is pushed out along the direction of the shredding cutter shaft (namely the length direction), the material of the card machine is discharged from the side face of the cutter teeth, and the material is smoothly removed.

The utility model discloses a further technical scheme does: the material pushing head comprises a transversely arranged baffle and a push plate longitudinally arranged below the baffle, and the first driving part is connected below the baffle. By arranging the baffle plate structure, after the material pushing head moves above the cutter head, the baffle plate isolates materials in the feeding bin, so that the situation that the materials continuously fall to influence the cleaning effect is avoided; certainly, one side that deviates from rubbish and pushes away the export can also set up through the reverse export that pushes away, has realized pushing away the vertical push pedal of stub bar return stroke process and has scraped out the card machine material, can clear up the material once more and reverse the release, and further improve the clearance effect.

The utility model discloses a further technical scheme does: the slide rail component comprises two slide rail pieces arranged on two opposite sides of an opening on the upper part of the cutter head shell, and one end of the slide rail piece, which is deviated from the push-out opening, also transversely protrudes out of the cutter head shell;

the first driving part is a first oil cylinder, and the fixing part is a fixing plate arranged at one end of the slide rail assembly, which is far away from the push-out opening.

The utility model discloses a further technical scheme does: the power device is composed of a motor, the switch clutch device is composed of a clutch, and the transmission connecting device is in gear transmission connection or conveyor belt transmission connection.

The utility model discloses a further technical scheme does: still include the auxiliary power module:

this auxiliary power module is connected with the transmission of main drive module, and when the machine did not take place the card machine, main drive module work, and when taking place the machine card machine, auxiliary power module work provides extra power, and helping hand main drive module drives the pivot and resumes shredder cutter tooth and rotate, overcomes the card machine trouble.

The auxiliary power module comprises a power device, a switch clutch device and a transmission connecting device. The power device provides power, and the switch clutch device is connected with the power device and controls the start and the stop of the power device. One end of the transmission device is connected with the power device, and the other end of the transmission device is connected with the main driving module and is used for transmitting the power generated by the power device to the main driving module.

The utility model discloses a further technical scheme does: still include swager constructs:

the material pressing mechanism comprises a material pressing rack, a material pressing component and a second driving part; the second driving part is arranged on the material pressing rack, and the material pressing component is movably arranged on the material pressing rack and connected to the second driving part, so that the material pressing component has a material pressing position protruding into the feeding bin and an initial position taken out of the feeding bin.

The utility model discloses a further technical scheme does: the material pressing machine is erected on one side of the feeding bin and extends to the position above the feeding bin; the material pressing component is a connecting rod component arranged at the upper end of the material pressing rack; the second driving part is a second oil cylinder, and two ends of the second oil cylinder are respectively pivoted on the material pressing rack and the connecting rod assembly.

The utility model discloses a further technical scheme does: the connecting rod assembly is a four-connecting rod assembly; a pressure plate is further arranged on a connecting rod on one side of the four-connecting-rod assembly, which is far away from the material pressing rack, so that a pressure foot is formed.

The utility model discloses a further technical scheme does: still include automatic control mechanism:

the automatic control mechanism comprises a controller and an ammeter in communication connection with the controller; the ammeter is arranged on a power supply circuit of the shredding mechanism, and the controller is electrically connected with an actuating device of the material pushing mechanism.

The utility model discloses a further technical scheme does: the shredder also comprises a material detection sensor in communication connection with the controller, and the material detection sensor is arranged below the shredding knife; the controller is electrically connected to a control module or actuator of the shredder mechanism.

The utility model discloses a further technical scheme does: the device also comprises a waste material pushing mechanism. The waste material pushing mechanism comprises a receiving hopper and a pushing device, preferably a spiral pusher. The receiving hopper is fixed on the shredding mechanism and is arranged at the position of the garbage push-out opening of the material pushing mechanism.

Has the advantages that: the utility model discloses a shredder anti-blocking device, including shredding mechanism, this shredding mechanism includes the blade disc and locates the feeding storehouse of this blade disc top, still is equipped with pushing equipment between feeding storehouse and the blade disc: the pushing mechanism comprises an installation seat connected between the cutter head and the feeding bin, and a garbage pushing outlet is formed in one side of the installation seat; the mounting seat is movably provided with a material pushing head, and the mounting seat is also provided with a first driving part which is connected with the material pushing head of the connector and drives the material pushing head to move towards the garbage pushing outlet. Through set up pushing equipment between blade disc and feeding storehouse, when the card machine trouble takes place in the blade disc, promote this pusher head through first drive component towards rubbish release mouth, push away the card machine material from the blade disc through the pusher head, realize the trouble and relieve. The problem of shredder putty processing difficulty is solved.

Drawings

FIG. 1 shows a front view of a shredder anti-jamming device according to an embodiment of the present invention;

fig. 2 shows a front and cross-sectional view of a kick-off lever according to an embodiment of the present invention;

FIG. 3 shows a front view of an anti-jamming device of a shredder according to an embodiment of the present invention;

FIG. 4 is a plan view showing a pusher mechanism according to a second embodiment;

FIG. 5 shows a front view of an anti-jamming device of a three-shredder according to an embodiment of the present invention;

FIG. 6 shows a side view of a third shredder material pressing mechanism according to an embodiment of the present invention;

fig. 7 shows a front and cross sectional view of a material poking rod in the fourth embodiment of the invention;

fig. 8 shows the anti-blocking device front view of the five-shredder according to the embodiment of the present invention.

Detailed Description

To further illustrate the embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.

The present invention will now be further described with reference to the accompanying drawings and detailed description.

The first embodiment: referring to fig. 1 and fig. 2, the embodiment provides an anti-blocking device for a shredder, which includes a shredding mechanism 1, wherein in the embodiment, a cutter head 10 with two oppositely rotating cutter shafts is arranged in the shredding mechanism 1, a feeding bin 11 with a flaring structure is further arranged above the cutter head 10, so as to bear materials and put garbage materials to be shredded into the cutter head 10, and the rotating cutter shafts in the cutter head 10 drive the shredding cutters to complete cutting and shredding. In this embodiment, a material ejecting mechanism 15 is provided in the feeding bin 11.

The material-shifting mechanism 15 includes a material-shifting motor 1501, a crank 1502 and a material-shifting rod 150: the material shifting motor is a hydraulic motor, and one end of the crank is connected to an output shaft of the material shifting motor; the upper end of the material poking rod 150 is provided with a pivot hole 151 which is arranged on the side wall surface of the feeding bin 11 in a pivot way; the middle part of the material-poking rod 150 is provided with a notch 152, and the tail end of the crank is inserted into the notch 152 through a sliding block, so that the material-poking rod 150 is driven to do reciprocating swing with a limited angle in the feeding bin 11.

Preferably, the material poking rod 150 is arranged on the side wall in the feeding bin 11 to ensure smooth blanking; in order to further improve the material poking effect, the bottom of the material poking rod 150 is also provided with a poking piece 153 protruding towards the inside, so that the auxiliary feeding is realized, and the technical effect of preventing the garbage materials from being adhered to the wall surface is achieved.

Second embodiment: referring to fig. 2 and 3, in the first embodiment, the shredder 1 includes a pushing mechanism 3.

The pushing mechanism 3 includes an installation seat 30 connected to the cutter head 10, and in this embodiment, the installation seat 30 is a rectangular frame structure; the cutter head 10 comprises a rectangular cutter head shell, the upper side and the lower side of the cutter head shell are communicated and respectively form a feed inlet connected with the feed bin 11 and a blanking port used for discharging shredded materials, and two shredding cutter shafts are arranged in the cutter head shell and can be rotatably installed on the blade shell; the mounting seat 30 is fixed at a feeding port on the upper side surface of the cutter head shell.

The mounting base 30 is further provided with a slide rail assembly, the slide rail assembly comprises two slide rail members 31, the two slide rail members 31 are arranged on two opposite sides of the feeding port of the cutter head shell, and a through channel for blanking is formed at the position of the feeding port.

Still movable mounting has the pusher head 32 on this mount pad 30, and is specific: the material pushing head 32 is slidably mounted on the two slide rail members 31, and further can slide along the slide rail members 31 along the length direction of the shredding knife shaft in a reciprocating manner.

The mounting seat 30 has a garbage pushing opening at one side and a fixing portion extending to the outside of the cutter head 10 at the other side, and the fixing portion is a fixing plate disposed between two of the slide rail members 31 in this embodiment.

A first oil cylinder 33 serving as a first driving part is pivoted on the fixing plate, and a piston rod of the first oil cylinder 33 is hinged on the material pushing head 32 to drive the material pushing head 32 to move towards the garbage pushing outlet of the mounting seat 30. Preferably, the first cylinder 33 is parallel to the length direction of the shredding knife shaft, and the garbage pushing opening is disposed on one side of the mounting seat 30 in the length direction. This kind of setting can push out the card machine material under the less circumstances of material pushing force, and pushes away the material direction perpendicular to shredding blade cutting direction, and the clearance effect is better.

In this embodiment, the specific structure of the material pushing head 32 is as follows: the material pushing head 32 is L-shaped, and includes a horizontal/transverse baffle and a vertical/longitudinal pushing plate disposed below the baffle, and then the first oil cylinder 33 is connected below the baffle.

Meanwhile, a reverse pushing outlet is further formed in the position deviating from the garbage pushing outlet on the mounting seat 30, in the embodiment, the garbage pushing outlet and the reverse pushing outlet are respectively formed in the positions corresponding to the two ends of the cutter shaft in the length direction, and further, in the resetting process of the material pushing head 32, the inner side surface of the pushing plate can reversely scrape materials remained above the shredding cutter shaft and is discharged from the reverse pushing outlet to further clean and stack.

The third embodiment: on the basis of the first or second embodiment, the present embodiment is configured by combining fig. 5 and fig. 6, and the present embodiment further includes a pressing mechanism 2: the pressing mechanism 2 includes a pressing frame 21, and the pressing frame 21 is a vertically disposed mounting frame, which is disposed at a side position of the feeding bin 11 and extends upward from the mounting seat 30 to an upper position of the feeding bin 11.

The material pressing rack 21 is also movably provided with a material pressing component and a second driving part: in this embodiment, the pressing component is a four-bar linkage assembly 23 mounted on the upper end of the pressing frame 21, and two parallel transverse links thereof are pivotally mounted on the pressing frame 21 and extend obliquely toward the upper side of the feeding bin 11; a pressure plate 25 horizontally arranged is arranged at the lower end of the connecting rod on the side departing from the material pressing rack 21, so that a pressure foot 24 is formed; the arrangement of the four-bar linkage ensures that the pressing plate 25 can move in a translational manner and further has a pressing position protruding into the feeding bin 11 and an initial position drawn out of the feeding bin 11.

The second driving component is a second oil cylinder 22 pivoted on the material pressing rack 21, and a piston rod of the second oil cylinder 22 is hinged on the four-link assembly 23, so that the four-link assembly 23 is driven to swing, and the pressing plate 25 is switched between a material pressing position and an initial position.

In this embodiment, one transverse link of the four-link assembly 23 protrudes away from the feeding bin 11, and the second cylinder is hinged to the protruding portion, so that the second cylinder 22 and the four-link assembly 23 are respectively arranged at two sides of the material pressing frame 21, smooth feeding is ensured, and mechanism interference is avoided.

One reason for the often unerased machinery is: when putting into the smooth article of bottle form such as beverage bottle (bottle form thing for short) in the feed bin, the unable interlock atress of sword tooth causes the unable phenomenon of tearing up, makes bottled thing detain in sword tooth top, and when accumulating a certain amount after, detain accumulational bottle form the isolation layer, leads to the unable other materials of contact of sword tooth, and then forms sword tooth idle running phenomenon. The main performance of this phenomenon is that the discharge gate does not have the material to come out, perhaps partly idles, leads to the discharge gate discharge capacity to be less than normal value.

One reason for the frequent failure of machine cards is: harder materials such as hard iron blocks, weight scales, crowbars and other materials which cannot be shredded by cutter teeth are placed in the storage bin, so that the cutter teeth cannot rotate, the motor stops after overload operation, and once the equipment meets the condition, the materials loaded in the storage bin need to be completely unloaded manually, and then the materials causing equipment failure are found and manually removed. Not only wastes time and labor, but also has important potential safety hazard. Once a worker is bitten by the knife teeth, the worker is disabled if the worker is light, and the worker is killed if the worker is heavy. The equipment can be damaged, and the common damage is that the motor is burnt out, the cutter teeth are broken, the rotating shaft is twisted and the like, so that the equipment can be damaged. One important feature of the card machine is the sudden increase in current in the motor circuit.

Another reason why the machine card fails due to the entrance and exit is that: soft materials which cannot be shredded, such as quilts, sacks, old clothes and the like, are put into the bin and cannot be shredded by the cutter teeth because of winding or binding, so that the cutter teeth cannot rotate to cause jamming. The handling method is similar to the fault of the prior card machine, needs manual clearing, is very inconvenient and dangerous.

Wherein, for realizing automatic row material function, this embodiment still includes automatic control mechanism:

the automatic control mechanism comprises a PLC controller, an ammeter and a material detection sensor, wherein the ammeter and the material detection sensor are in communication connection with the PLC controller; on this supply circuit of shredder mechanism was located to this ampere meter, on the driving motor who preferentially locates shredder mechanism supplied power line, this material detection sensor was infrared sensor, and its below of locating this shredding sword.

The PLC is electrically connected with the pushing mechanism and the executing device of the pressure mechanism, namely is connected to the reversing valves of the first oil cylinder and the second oil cylinder; simultaneously, this PLC controller still is connected with this shredder mechanism's control module or executive device electricity to control the start-stop and the direction of rotation of shredding the arbor.

When the current is detected by the ammeter to exceed the standard, the shredding cutter shaft clamps the materials, the reverse rotation of the shredding cutter shaft is started, and meanwhile, the first oil cylinder is started to push out the clamped materials; when the material sensor detects that the material is short in the normal shredding process, the shredding cutter shaft idles, and at the moment, the material pressing mechanism needs to be started to move downwards, so that the material in the feeding bin 11 is pressed downwards, and the shredding effect is ensured.

The fourth embodiment: referring to fig. 7, this embodiment provides an auxiliary power module to avoid the problem of insufficient shredding force of the blockage based on embodiment 1 or embodiment 2.

The auxiliary power module comprises an auxiliary power motor, in this embodiment a hydraulic motor 13, and a clutch 14 drivingly connecting the hydraulic motor 13 and the shredder shaft; when the main driving module is blocked and cannot rotate, the clutch is operated, so that the hydraulic motor 13 outputs power to be jointed with the rotating shaft of the cutter head, the hydraulic system is started, and the hydraulic motor 13 outputs high torque to drive the cutter shaft to rotate. After the jamming faults are eliminated, the clutch is operated to separate the power output by the hydraulic motor 13 from the rotating shaft of the cutter head. Of course, in other embodiments, the auxiliary driving module may also be a fuel driving module or an electric driving module, and correspondingly, the auxiliary driving motor is an internal combustion engine or an electric motor. The transmission connection mode in this embodiment is gear transmission connection, and other transmission connection modes such as a belt pulley and a travel lever may be adopted as long as the power of the auxiliary power module can be transmitted to the main drive module.

EXAMPLE five

As shown in fig. 8, the difference between this embodiment and the previous embodiment is: this embodiment is also provided with a scrap pushing mechanism. The waste pushing mechanism can be added to any of the above embodiments with pushing mechanisms.

The scrap pushing mechanism includes a receiving hopper 41 and a screw pusher 42: the receiving hopper 41 is fixed on the shredding mechanism 1 and is arranged at the position of a garbage pushing outlet of the pushing mechanism 3; the screw ejector 42 is connected to the lower end of the receiving hopper 41, and the ejection motor 420 is fixed to an end of the screw ejector 42 close to the receiving hopper 41.

Further, the jammed hard material pushed out by the pusher mechanism 3 enters the receiving hopper 41, and under the driving action of the push-out motor 420, the jammed hard material is conveyed by the screw pusher 42 to be separated from the receiving hopper 41, so that the final discharge is realized.

It should be noted that, the utility model discloses well pushing equipment, swager, auxiliary power device isotructure can with dial the arbitrary combination of material mechanism, make up and to constitute new embodiment, be the utility model discloses a protection scope. While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a shredder anti-blocking device, includes shredding mechanism, should shredding mechanism include the blade disc and locate the feeding storehouse of this blade disc top, its characterized in that: a material pulling mechanism is arranged in the feeding bin:

the material stirring mechanism is located inside the feeding bin and comprises a driving device and a material stirring device, the material stirring device is connected with the driving device, one end of the material stirring mechanism is installed on the side wall of the feeding bin, the other end of the material stirring mechanism can rotate, and the reciprocating swing of a limited angle can be performed around one end of the material stirring device.

2. The shredder anti-jamming device according to claim 1, characterized in that: still include pushing equipment:

the pushing mechanism comprises an installation seat connected between the cutter head and the feeding bin, and a garbage pushing outlet is formed in one side of the installation seat; the mounting seat is movably provided with a material pushing head, and the mounting seat is also provided with a connector and a first driving part for driving the material pushing head to move towards the garbage pushing outlet.

3. The shredder anti-jamming device according to claim 2, wherein: the upper side and the lower side of the cutter head shell are respectively provided with a feeding port and a blanking port, the mounting seat is fixed at the feeding port, and the garbage pushing port is arranged on one side of the mounting seat in the length direction.

4. The shredder anti-jamming device according to claim 2, wherein: the material pushing head comprises a transversely arranged baffle and a push plate longitudinally arranged below the baffle, and the first driving part is connected below the baffle.

5. The shredder anti-jamming device according to claim 2, wherein: still include waste material ejecting mechanism:

this waste material ejecting mechanism is including connecing hopper and spiral throw-out ware, should connect the hopper to be fixed in on this shredding mechanism, and this spiral throw-out ware should connect the hopper with this.

6. The shredder anti-jamming device according to claim 1, characterized in that: still include the auxiliary power module:

the auxiliary power module comprises a power device, a switch clutch device and a transmission connecting device, and is in transmission connection with the main driving module.

7. The shredder anti-jamming device according to claim 6, wherein: the power device is a hydraulic motor, the switch clutch device is a clutch, and the transmission connecting device is in gear transmission connection or conveyor belt transmission connection.

8. The shredder anti-jamming device according to claim 1, further comprising a material pressing mechanism:

9. The shredder anti-jamming device according to claim 8, wherein: the material pressing machine is erected on one side of the feeding bin and extends to the position above the feeding bin; the material pressing component is a connecting rod component arranged at the upper end of the material pressing rack; the second driving part is a second oil cylinder, and two ends of the second oil cylinder are respectively pivoted on the material pressing rack and the connecting rod assembly.

10. A shredder anti-jamming device according to any one of claims 2 to 5, further comprising an automatic control mechanism:

the automatic control mechanism comprises a controller and an ammeter in communication connection with the controller; the ammeter is arranged on a power supply circuit of the shredding mechanism, and the controller is electrically connected with the connector of the material pushing mechanism.