CN216499823U - Two-stage paper shredder - Google Patents

Abstract

The utility model relates to the field of paper shredders, in particular to a two-stage paper shredder, which comprises a frame assembly, a first belt conveyor assembly, a first-stage machine core assembly, a second belt conveyor assembly, a second-stage machine core assembly and a third belt conveyor assembly, wherein the frame assembly is arranged on the ground, the first belt conveyor assembly, the second belt conveyor assembly and the third belt conveyor assembly are respectively and fixedly connected in a cavity of the frame assembly, the first-stage machine core assembly and the second-stage machine core assembly are respectively and fixedly connected in the cavity of the frame assembly, and the first-stage machine core assembly is positioned at the tail end of the first belt conveyor assembly, the waste paper strips can be secondarily crushed by designing the secondary machine core assembly, so that the problem that the strip paper still has secret information is solved, the problem of information leakage or occupation space probably causes, through designing second belt conveyor assembly, has solved strip paper and has smashed again and need manual operation, need put into the kneader again with strip paper from collection device and carry out the secondary crushing in and waste time and energy the problem.

Description

Two-stage paper shredder

Technical Field

The utility model relates to the field of paper shredders, in particular to a two-stage paper shredder.

Background

The paper shredder is composed of a rotary blade, a paper comb and a driving motor, waste paper is fed from the middle of the blades which are mutually meshed and is divided into a plurality of fine paper sheets, the paper shredding mode is that the paper is shredded by a paper shredding knife after being processed by the paper shredder, the conventional paper shredder is mostly a strip paper shredder, namely, the waste paper is cut into strips after entering the paper shredder, so certain disadvantages exist:

1. confidential information remains on the paper strip, which may cause information leakage or take up space.

2. The manual operation is needed to crush the strip-shaped paper, and the strip-shaped paper needs to be put into the paper crusher from the collecting device for secondary crushing, so that the time and the labor are wasted.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a two-stage paper shredder.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a second grade kneader, including frame assembly, first belt feeder assembly, one-level core assembly, second belt feeder assembly, second grade core assembly and third belt feeder assembly, the frame assembly is arranged in subaerially, first belt feeder assembly, second belt feeder assembly and third belt feeder assembly fixed connection respectively in the frame assembly intracavity, one-level core assembly and second grade core assembly fixed connection respectively in the frame assembly intracavity, and one-level core assembly is located first belt feeder assembly end, second grade core assembly is located second belt feeder assembly end.

Further, the frame assembly includes the underframe, upper bracket, the upper frame, the backplate, go up the cover plate, the heating panel, the preceding baffle, the pan feeding platform, two side cover plates and four truckles, four truckles are fixed connection respectively in the bottom of underframe, upper bracket fixed connection is in the underframe upper end, go up frame fixed connection in underframe upper end, and upper bracket is located inside the upper frame, two side cover plates are fixed connection respectively in the both sides of last frame, upper cover plate fixed connection is in last frame upper end, heating panel fixed connection is in last cover plate upper end, the preceding baffle articulates on last cover plate, pan feeding platform fixed connection is in the one end of last frame, backplate fixed connection is at the other end of last frame, the belt trough has been seted up on the pan feeding platform, belt trough and first belt feeder assembly fixed connection.

Further, first belt feeder assembly includes first belt feeder support frame, first driving shaft, first driven shaft, first single sprocket and first conveyer belt, and first belt feeder support frame passes through support fixed connection in last support frame upper end, and first belt feeder support frame and belt conveyor groove fixed connection, and first driving shaft and first driven shaft rotate respectively and connect the both ends at first belt feeder support frame, and first single sprocket fixed connection is in the one end of first driving shaft, and the both ends of first conveyer belt rotate respectively and connect on first driving shaft and first driven shaft.

Further, the primary deck assembly comprises a first motor, a first driving sprocket, a first driving cutter shaft, a first driving gear, a first driven sprocket, a first driven cutter shaft, a first driven gear, a first driving sprocket and a first cutter box, the first cutter box is fixedly connected to the upper end of the upper support frame, the first cutter box is positioned at one end of the first belt conveyor support frame, the first motor is fixedly connected to the upper end of the first cutter box, the first driving sprocket is fixedly connected to an output shaft of the first motor, the first driving cutter shaft and the first driven cutter shaft are respectively and rotatably connected to the first cutter box, the first driving gear and the first driven gear are respectively and fixedly connected to one end of the first driving cutter shaft and one end of the first driven cutter shaft, the first driven sprocket is fixedly connected to one end of the first driving cutter shaft, the first driving gear and the first driven sprocket rotate coaxially, the first driving gear is meshed with the first driven gear, the first transmission chain wheel is fixedly connected to the other end of the first driven cutter shaft.

Furthermore, the second belt conveyor assembly comprises a second belt conveyor support frame, a second driving shaft, a second driven shaft, a second single-row chain wheel and a second conveying belt, the second belt conveyor support frame is fixedly connected to the upper end of the upper support frame, the second belt conveyor support frame is located below the first cutter box, the second driving shaft and the second driven shaft are respectively connected to the two ends of the second belt conveyor support frame in a rotating mode, the second single-row chain wheel is fixedly connected to one end of the second driving shaft, and the two ends of the second conveying belt are respectively connected to the second driving shaft and the second driven shaft in a rotating mode.

Further, the second-stage movement assembly comprises a second motor, a second driving sprocket, a second driving cutter shaft, a second driving gear, a second driven sprocket, a second driven cutter shaft, a second driven gear, a second transmission sprocket, a movement connecting plate and a second cutter box, the second cutter box is fixedly connected to the upper end of the upper support frame, the second cutter box is positioned at one end of the second belt conveyor support frame, the second motor is fixedly connected to the upper end of the second cutter box, the second driving sprocket is fixedly connected to an output shaft of the second motor, the second driving cutter shaft and the second driven cutter shaft are respectively and rotatably connected to the second cutter box, the second driving gear and the second driven gear are respectively and fixedly connected to one end of the second driving cutter shaft and one end of the second driven cutter shaft, the second driven sprocket is fixedly connected to one end of the second driving cutter shaft, and the second driving gear and the second driven sprocket rotate coaxially, the second driving gear is meshed with the second driven gear, the second transmission chain wheel is fixedly connected to the other end of the second driven cutter shaft, the movement connecting plate is fixedly connected to the upper end of the second belt conveyor supporting frame, and two ends of the movement connecting plate are respectively fixedly connected to the first cutter box and the second cutter box.

Furthermore, the third belt conveyor assembly comprises a third belt conveyor support frame, a third driving shaft, a third driven shaft, a third single-row chain wheel and a third conveying belt, the third belt conveyor support frame is fixedly connected to the upper end of the lower frame and located below the second tool box, the third driving shaft and the third driven shaft are respectively rotatably connected to two ends of the third belt conveyor support frame, the third single-row chain wheel is fixedly connected to one end of the third driving shaft, and two ends of the third conveying belt are respectively rotatably connected to the third driving shaft and the third driven shaft.

The utility model has the beneficial effects that:

1. according to the two-stage paper shredder, the waste paper strips can be secondarily shredded by designing the two-stage movement assembly, so that the problem that confidential information is remained on the strip paper, and information leakage or space occupation is possibly caused is solved.

2. According to the two-stage paper shredder, the second belt conveyor assembly is designed, so that the problems that manual operation is needed for re-shredding strip paper, and the strip paper needs to be put into the paper shredder from the collecting device for secondary shredding, which wastes time and labor are solved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below.

FIG. 1 is a schematic overall perspective view of the present invention;

FIG. 2 is an exploded perspective view of the present invention;

FIG. 3 is an exploded perspective view of the frame assembly of the present invention;

FIG. 4 is an exploded perspective view of the first, second and third belt conveyor assemblies of the present invention;

FIG. 5 is an exploded perspective view of the primary and secondary deck assemblies of the present invention;

FIG. 6 is an exploded perspective view of the primary and secondary deck assemblies of the present invention;

in the figure:

1. a frame assembly; 1a, a lower frame; 1b, an upper support frame; 1c, a caster; 1d, an upper frame; 1e, a side cover plate; 1f, a back plate; 1g, mounting a cover plate; 1h, a heat dissipation plate; 1j, a front baffle; 1k, a feeding platform; 1m, a belt conveyor groove;

2. a first belt conveyor assembly; 2a, a first belt conveyor support frame; 2b, a first driving shaft; 2c, a first driven shaft; 2d, a first single-row chain wheel; 2e, a first conveyor belt;

3. a first-level movement assembly; 3a, a first motor; 3b, a first driving sprocket; 3c, a first driving cutter shaft; 3d, a first driving gear; 3e, a first driven sprocket; 3f, a first driven cutter shaft; 3g, a first driven gear; 3h, a first transmission chain wheel; 3k, a first tool box;

4. a second belt conveyor assembly; 4a, a second belt conveyor support frame; 4b, a second driving shaft; 4c, a second driven shaft; 4d, a second single-row chain wheel; 4e, a second conveyor belt;

5. a secondary deck assembly; 5a, a second motor; 5b, a second driving sprocket; 5c, a second driving cutter shaft; 5d, a second driving gear; 5e, a second driven sprocket; 5f, a second driven cutter shaft; 5g, a second driven gear; 5h, a second transmission chain wheel; 5j, a movement connecting plate; 5k, a second tool box;

6. a third belt conveyor assembly; 6a, a third belt conveyor support frame; 6b, a third driving shaft; 6c, a third driven shaft; 6d, a third single-row chain wheel; 6e and a third conveyer belt.

Detailed Description

The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.

Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some components of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product.

Referring to fig. 1 to 6, a two-stage paper shredder comprises a frame assembly 1, a first belt conveyor assembly 2, a first-stage movement assembly 3, a second belt conveyor assembly 4, a second-stage movement assembly 5 and a third belt conveyor assembly 6, wherein the frame assembly 1 is arranged on the ground, the first belt conveyor assembly 2, the second belt conveyor assembly 4 and the third belt conveyor assembly 6 are respectively and fixedly connected in a cavity of the frame assembly 1, the first-stage movement assembly 3 and the second-stage movement assembly 5 are respectively and fixedly connected in a cavity of the frame assembly 1, the first-stage movement assembly 3 is positioned at the tail end of the first belt conveyor assembly 2, and the second-stage movement assembly 5 is positioned at the tail end of the second belt conveyor assembly 4.

The frame assembly 1 comprises a lower frame 1a, an upper support frame 1b, an upper frame 1d, a back plate 1f, an upper cover plate 1g, a heat dissipation plate 1h, a front baffle plate 1j, a feeding platform 1k, two side cover plates 1e and four caster wheels 1c, wherein the four caster wheels 1c are respectively and fixedly connected with the bottom end of the lower frame 1a, the upper support frame 1b is fixedly connected with the upper end of the lower frame 1a, the upper frame 1d is fixedly connected with the upper end of the lower frame 1a, the upper support frame 1b is positioned in the upper frame 1d, the two side cover plates 1e are respectively and fixedly connected with two sides of the upper frame 1d, the upper cover plate 1g is fixedly connected with the upper end of the upper frame 1d, the heat dissipation plate 1h is fixedly connected with the upper end of the upper cover plate 1g, the front baffle plate 1j is hinged on the upper cover plate 1g, the feeding platform 1k is fixedly connected with one end of the upper frame 1d, the back plate 1f is fixedly connected with the other end of the upper frame 1d, the feeding platform 1k is provided with a belt conveyor groove 1m, and the belt conveyor groove 1m is fixedly connected with the first belt conveyor assembly 2. Set up the removal of this device of truckle 1c being convenient for, offer on backplate 1f and be used for the heat dissipation grid of this device, heat dissipation grid has also been seted up to heating panel 1h side, and backplate 1f and heating panel 1 h's effect all are the heat dissipation for this device, and baffle 1j before setting up articulated formula preceding baffle 1j is convenient for this device and pulls open under the condition of card paper clears up.

First belt feeder assembly 2 includes first belt feeder support frame 2a, first driving shaft 2b, first driven shaft 2c, first single sprocket 2d and first conveyer belt 2e, first belt feeder support frame 2a passes through support fixed connection in last support frame 1b upper end, and first belt feeder support frame 2a and belt machine groove 1m fixed connection, first driving shaft 2b and first driven shaft 2c rotate respectively and connect the both ends at first belt feeder support frame 2a, first single sprocket 2d fixed connection is in first driving shaft 2 b's one end, the both ends of first conveyer belt 2e rotate respectively and connect on first driving shaft 2b and first driven shaft 2 c. First belt feeder assembly 2 plays the effect of carrying waste paper, and first single sprocket 2d is connected through chain and first driving sprocket 3h, places waste paper on pan feeding platform 1k, and waste paper is carried into first cutter box 3k and is carried out the one-level slitting under the effect of first conveyer belt 2e, and the material after being slit falls on second belt feeder assembly 4, is carried to second grade core assembly 5 by second belt feeder assembly 4.

The primary movement assembly 3 comprises a first motor 3a, a first driving chain wheel 3b, a first driving cutter shaft 3c, a first driving gear 3d, a first driven chain wheel 3e, a first driven cutter shaft 3f, a first driven gear 3g, a first transmission chain wheel 3h and a first cutter box 3k, the first cutter box 3k is fixedly connected to the upper end of an upper support frame 1b, the first cutter box 3k is positioned at one end of a first belt conveyor support frame 2a, the first motor 3a is fixedly connected to the upper end of the first cutter box 3k, the first driving chain wheel 3b is fixedly connected to an output shaft of the first motor 3a, the first driving cutter shaft 3c and the first driven cutter shaft 3f are respectively and rotatably connected to the first cutter box 3k, the first driving gear 3d and the first driven gear 3g are respectively and fixedly connected to one ends of the first driving cutter shaft 3c and the first driven cutter shaft 3f, first driven sprocket 3e fixed connection is in the one end of first driving arbor 3c, and first driving gear 3d and the coaxial rotation of first driven sprocket 3e, and first driving gear 3d and the meshing of first driven gear 3g, first drive sprocket 3h fixed connection is at the other end of first driven arbor 3 f. One-level core assembly 3's effect carries out the one-level slitting with the waste paper that first belt feeder assembly 2 conveyed into first cutter box 3k, first motor 3a starts to drive first drive sprocket 3b and rotates, first drive sprocket 3b and first driven sprocket 3e pass through the chain and connect, first driven sprocket 3e and the coaxial rotation of first drive gear 3d and the meshing of first driven gear 3g simultaneously, and then drive first drive arbor 3c and first driven arbor 3f and rotate and drive the rotatory waste paper slitting of cutter.

The second belt conveyor assembly 4 comprises a second belt conveyor support frame 4a, a second driving shaft 4b, a second driven shaft 4c, a second single-row chain wheel 4d and a second conveying belt 4e, the second belt conveyor support frame 4a is fixedly connected to the upper end of the upper support frame 1b, the second belt conveyor support frame 4a is located below the first cutter box 3k, the second driving shaft 4b and the second driven shaft 4c are respectively and rotatably connected to two ends of the second belt conveyor support frame 4a, the second single-row chain wheel 4d is fixedly connected to one end of the second driving shaft 4b, and two ends of the second conveying belt 4e are respectively and rotatably connected to the second driving shaft 4b and the second driven shaft 4 c. The second single-row chain wheel 4d is connected with one of the rows of chain wheels of the second transmission chain wheel 5h through a chain, the second transmission chain wheel 5h rotates to drive the second single-row chain wheel 4d to rotate, the second single-row chain wheel 4d drives the second conveying belt 4e to rotate, waste paper strip cutting materials falling downwards from the first cutter box 3k fall onto the second conveying belt 4e, and the second conveying belt 4e rotates to drive the strip cutting materials to move towards the second cutter box 5 k.

The two-stage movement assembly 5 comprises a second motor 5a, a second driving chain wheel 5b, a second driving cutter shaft 5c, a second driving gear 5d, a second driven chain wheel 5e, a second driven cutter shaft 5f, a second driven gear 5g, a second transmission chain wheel 5h, a movement connecting plate 5j and a second cutter box 5k, wherein the second cutter box 5k is fixedly connected to the upper end of the upper supporting frame 1b, the second cutter box 5k is positioned at one end of a second belt conveyor supporting frame 4a, the second motor 5a is fixedly connected to the upper end of the second cutter box 5k, the second driving chain wheel 5b is fixedly connected to an output shaft of the second motor 5a, the second driving cutter shaft 5c and the second driven cutter shaft 5f are respectively and rotatably connected to the second cutter box 5k, the second driving gear 5d and the second driven gear 5g are respectively and fixedly connected to one ends of the second driving cutter shaft 5c and the second driven cutter shaft 5f, second driven sprocket 5e fixed connection is in the one end of second driving arbor 5c, and second driving gear 5d and the coaxial rotation of second driven sprocket 5e, second driving gear 5d and the meshing of second driven gear 5g, second drive sprocket 5h fixed connection is at the other end of second driven arbor 5f, core connecting plate 5j fixed connection is in second belt conveyor support frame 4a upper end, and the both ends of core connecting plate 5j fixed connection respectively is on first cutter box 3k and second cutter box 5 k. The second grade core assembly 5 is used for performing second grade crushing on the slitting material conveyed by the second conveying belt 4e to form scraps, the second motor 5a is started to drive the second driving chain wheel 5b to rotate, the second driving chain wheel 5b is connected with the second driven chain wheel 5e through a chain, the second driven chain wheel 5e and the second driving chain wheel 5d rotate coaxially, meanwhile, the second driving chain wheel 5d is meshed with the second driven gear 5g, and further the second driving cutter shaft 5c and the second driven cutter shaft 5f are driven to rotate to drive the cutter to rotate to crush the slitting material, and the core connecting plate 5j plays a role in guiding, so that the slitting material is prevented from falling towards the inside of the device.

Third belt feeder assembly 6 includes third belt feeder support frame 6a, third driving shaft 6b, third driven shaft 6c, third single sprocket 6d and third conveyer belt 6e, third belt feeder support frame 6a fixed connection is in underframe 1a upper end, and third belt feeder support frame 6a is located second cutter box 5k below, third driving shaft 6b and third driven shaft 6c rotate respectively and connect the both ends at third belt feeder support frame 6a, third single sprocket 6d fixed connection is in the one end of third driving shaft 6b, the both ends of third conveyer belt 6e rotate respectively and connect on third driving shaft 6b and third driven shaft 6 c. The third single-row chain wheel 6d is connected with the other row chain wheel of the second transmission chain wheel 5h through a chain, the third single-row chain wheel 6d rotates to drive the third conveying belt 6e to rotate, the chips falling from the second cutter box 5k fall onto the third conveying belt 6e, and the third conveying belt 6e rotates to drive the chips to be conveyed forwards and fall into the chip collecting device.

The working principle is as follows: the caster wheels 1c are arranged to facilitate the movement of the device, the heat dissipation grids for the device are arranged on the back plate 1f, the heat dissipation grids are also arranged on the side surface of the heat dissipation plate 1h, the back plate 1f and the heat dissipation plate 1h are both used for dissipating heat for the device, the hinged front baffle plate 1j is arranged to facilitate the device to pull open the front baffle plate 1j for cleaning under the condition of paper jam, the first belt conveyor assembly 2 plays a role of conveying waste paper, the first single-row chain wheel 2d is connected with the first transmission chain wheel 3h through a chain, the waste paper is placed on the feeding platform 1k, the waste paper is conveyed into the first cutter box 3k for primary cutting under the action of the first conveyor belt 2e, the cut material falls on the second belt conveyor assembly 4 and is conveyed to the second core assembly 5 through the second belt assembly 4, the primary core assembly 3 is used for conveying the waste paper conveyed into the first cutter box 3k by the first belt conveyor assembly 2 for primary cutting, the first motor 3a is started to drive the first driving sprocket 3b to rotate, the first driving sprocket 3b is connected with the first driven sprocket 3e through a chain, the first driven sprocket 3e and the first driving gear 3d rotate coaxially while the first driving gear 3d is meshed with the first driven gear 3g so as to drive the first driving cutter shaft 3c and the first driven cutter shaft 3f to rotate to drive a cutter to rotate to cut waste paper, the second single-row sprocket 4d is connected with one row of sprockets of the second driving sprocket 5h through a chain, the second driving sprocket 5h rotates to drive the second single-row sprocket 4d to rotate, the second single-row sprocket 4d drives the second conveyer belt 4e to rotate, waste paper cut materials which fall downwards from the first cutter box 3k fall onto the second conveyer belt 4e, the second conveyer belt 4e rotates to drive the cut materials to move towards the second cutter box 5k, and the secondary machine core assembly 5 is used for performing secondary crushing on the cut materials conveyed by the second conveyer belt 4e to form chips, the second motor 5a is started to drive the second driving sprocket 5b to rotate, the second driving sprocket 5b is connected with the second driven sprocket 5e through a chain, the second driven sprocket 5e and the second driving gear 5d rotate coaxially and the second driving gear 5d is engaged with the second driven gear 5g, and then drive second driving cutter shaft 5c and second driven cutter shaft 5f and rotate and drive the rotatory cutter and smash the slitting material, core connecting plate 5j plays the guide effect, avoid slitting material to drop to the device inside, third single sprocket 6d is connected through another row of sprocket of chain and second drive sprocket 5h, third single sprocket 6d rotates and drives third conveyer belt 6e and rotate, the piece by the whereabouts of second cutter box 5k drops on third conveyer belt 6e, third conveyer belt 6e rotates and drives the piece and carry forward, drop in piece collection device.

Claims (7)

1. A two-stage paper shredder is characterized in that: including frame assembly (1), first belt feeder assembly (2), one-level core assembly (3), second belt feeder assembly (4), second grade core assembly (5) and third belt feeder assembly (6), subaerial is arranged in to frame assembly (1), first belt feeder assembly (2), second belt feeder assembly (4) and third belt feeder assembly (6) fixed connection are respectively in frame assembly (1) intracavity, one-level core assembly (3) and second grade core assembly (5) fixed connection are respectively in frame assembly (1) intracavity, and one-level core assembly (3) are located first belt feeder assembly (2) end, second grade core assembly (5) are located at second belt feeder assembly (4) end.

2. The two-stage shredder according to claim 1, wherein: the frame assembly (1) comprises a lower frame (1a), an upper support frame (1b), an upper frame (1d), a back plate (1f), an upper cover plate (1g), a heat dissipation plate (1h), a front baffle plate (1j), a feeding platform (1k), two side cover plates (1e) and four trundles (1c), wherein the four trundles (1c) are respectively and fixedly connected with the bottom end of the lower frame (1a), the upper support frame (1b) is fixedly connected with the upper end of the lower frame (1a), the upper frame (1d) is fixedly connected with the upper end of the lower frame (1a), the upper support frame (1b) is positioned inside the upper frame (1d), the two side cover plates (1e) are respectively and fixedly connected with the two sides of the upper frame (1d), the upper cover plate (1g) is fixedly connected with the upper end of the upper frame (1d), the heat dissipation plate (1h) is fixedly connected with the upper end of the upper cover plate (1g), preceding baffle (1j) articulates on last cover plate (1g), and pan feeding platform (1k) fixed connection has seted up belt machine groove (1m), belt machine groove (1m) and first belt feeder assembly (2) fixed connection at the one end of last frame (1d), backplate (1f) fixed connection at the other end of last frame (1d) on pan feeding platform (1 k).

3. The two-stage shredder according to claim 2, wherein: first belt feeder assembly (2) include first belt feeder support frame (2a), first driving shaft (2b), first driven shaft (2c), first single sprocket (2d) and first conveyer belt (2e), first belt feeder support frame (2a) are through support fixed connection in last support frame (1b) upper end, and first belt feeder support frame (2a) and belt feeder groove (1m) fixed connection, first driving shaft (2b) and first driven shaft (2c) rotate respectively and connect the both ends at first belt feeder support frame (2a), first single sprocket (2d) fixed connection is in the one end of first driving shaft (2b), the both ends of first conveyer belt (2e) rotate respectively and connect on first driving shaft (2b) and first driven shaft (2 c).

4. The two-stage shredder according to claim 3, wherein: one-level core assembly (3) includes first motor (3a), first drive sprocket (3b), first drive arbor (3c), first driving gear (3d), first driven sprocket (3e), first driven arbor (3f), first driven gear (3g), first drive sprocket (3h) and first cutter box (3k), first cutter box (3k) fixed connection is in last support frame (1b) upper end, and first cutter box (3k) are located the one end of first belt feeder support frame (2a), first motor (3a) fixed connection is in first cutter box (3k) upper end, first drive sprocket (3b) fixed connection is on the output shaft of first motor (3a), first drive arbor (3c) and first driven arbor (3f) rotate respectively and connect on first drive arbor (3k), first driving gear (3d) and first driven gear (3g) respectively fixed connection are in first cutter arbor (3k), first driving gear (3d) and first driven gear (3g) are fixed connection in first cutter box (3k) first arbor (3c) And one end of a first driven cutter shaft (3f), a first driven chain wheel (3e) is fixedly connected to one end of the first driving cutter shaft (3c), a first driving gear (3d) and the first driven chain wheel (3e) rotate coaxially, the first driving gear (3d) is meshed with the first driven gear (3g), and a first transmission chain wheel (3h) is fixedly connected to the other end of the first driven cutter shaft (3 f).

5. The two-stage shredder according to claim 4, wherein: the second belt conveyor assembly (4) comprises a second belt conveyor support frame (4a), a second driving shaft (4b), a second driven shaft (4c), a second single-row chain wheel (4d) and a second conveying belt (4e), the second belt conveyor support frame (4a) is fixedly connected to the upper end of the upper support frame (1b), the second belt conveyor support frame (4a) is located below the first cutter box (3k), the second driving shaft (4b) and the second driven shaft (4c) are respectively connected to the two ends of the second belt conveyor support frame (4a) in a rotating mode, the second single-row chain wheel (4d) is fixedly connected to one end of the second driving shaft (4b), and the two ends of the second conveying belt (4e) are respectively connected to the second driving shaft (4b) and the second driven shaft (4c) in a rotating mode.

6. The two-stage shredder according to claim 5, wherein: the two-stage movement assembly (5) comprises a second motor (5a), a second driving chain wheel (5b), a second driving cutter shaft (5c), a second driving gear (5d), a second driven chain wheel (5e), a second driven cutter shaft (5f), a second driven gear (5g), a second transmission chain wheel (5h), a movement connecting plate (5j) and a second cutter box (5k), wherein the second cutter box (5k) is fixedly connected to the upper end of the upper supporting frame (1b), the second cutter box (5k) is positioned at one end of a second belt conveyor supporting frame (4a), the second motor (5a) is fixedly connected to the upper end of the second cutter box (5k), the second driving chain wheel (5b) is fixedly connected to an output shaft of the second motor (5a), the second driving cutter shaft (5c) and the second driven cutter shaft (5f) are respectively and rotatably connected to the second cutter box (5k), second driving gear (5d) and second driven gear (5g) fixed connection are respectively in the one end of second driving arbor (5c) and second driven arbor (5f), second driven sprocket (5e) fixed connection is in the one end of second driving arbor (5c), and second driving gear (5d) and second driven sprocket (5e) coaxial rotation, second driving gear (5d) and second driven gear (5g) meshing, second drive sprocket (5h) fixed connection is at the other end of second driven arbor (5f), core connecting plate (5j) fixed connection is in second belt conveyor support frame (4a) upper end, and the both ends of core connecting plate (5j) are fixed connection respectively on first cutter box (3k) and second cutter box (5 k).

7. The two-stage shredder according to claim 6, wherein: third belt feeder assembly (6) include third belt feeder support frame (6a), third driving shaft (6b), third driven shaft (6c), third single sprocket (6d) and third conveyer belt (6e), third belt feeder support frame (6a) fixed connection is in underframe (1a) upper end, and third belt feeder support frame (6a) are located second cutter box (5k) below, third driving shaft (6b) and third driven shaft (6c) rotate respectively and connect the both ends in third belt feeder support frame (6a), third single sprocket (6d) fixed connection is in the one end of third driving shaft (6b), the both ends of third conveyer belt (6e) rotate respectively and connect on third driving shaft (6b) and third driven shaft (6 c).

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