Wear-resistant roller crusher with self-cleaning function

Abstract

The invention relates to the technical field of crushing, and particularly discloses a wear-resistant roller crusher with a self-cleaning function, which comprises a rack, a crushing bin, a rotating shaft, a speed reducer and a cutterhead, the crushing bin is installed on the top face of the rack, the rotating shaft penetrates through the crushing bin, the two ends of the rotating shaft extend out of the crushing bin, the two ends of the rotating shaft are rotationally connected with bearing supporting bases, and the bearing supporting bases are installed on the top face of the rack; the speed reducer is mounted on the top surface of the rack; an output shaft of the speed reducer is connected with one end of the rotating shaft; the multiple cutter heads are coaxially arranged on the circumferential face of the rotating shaft in a sleeving mode, the multiple cutter heads are evenly distributed along the axis of the rotating shaft, and cutter heads are installed on the circumferential faces of the cutter heads; and two sets of crushing cutters are slidably arranged on the inner wall of the crushing bin and are arranged on the two sides of the rotating shaft correspondingly, the crushing cutters and the cutter heads are arranged in a staggered mode, and a push-pull mechanism used for driving the crushing cutters to slide in the crushing bin is installed on the outer wall of the crushing bin. The crusher has the effect of improving the cleaning convenience of the crusher.

Description

Technical Field

[0001] The present invention relates to the technical field of crushing, and in particular to a wear-resistant roller crusher with a self-cleaning function. Background Art

[0002] The main function of a roller crusher is to crush large pieces of materials into small pieces. The materials are crushed under the action of the extrusion and shear force of the crushing rollers; the materials that meet the particle size requirements are discharged from the roll gap, and the over-sized materials continue to be crushed.

[0003] In the related art, during the process of material crushing, some materials will be stuck between the tools of the crushing rollers. In order to achieve better material crushing effect and material discharging effect, it is necessary to clean the materials stuck between the tools regularly; when cleaning the materials between the tools, a pickaxe is often used to crush the stuck materials, and this cleaning method is rather troublesome. Summary of the Invention

[0004] In order to improve the convenience of cleaning the crusher, the present application provides a wear-resistant roller crusher with a self-cleaning function.

[0005] The wear-resistant roller crusher with a self-cleaning function provided by the present application adopts the following technical solutions: A wear-resistant roller crusher with a self-cleaning function includes a frame, a crushing chamber, a rotating shaft, a speed reducer, and a cutter head; the crushing chamber is installed on the top surface of the frame, the rotating shaft penetrates through the crushing chamber, both ends of the rotating shaft extend out of the crushing chamber, and bearing support seats are rotatably connected to both ends of the rotating shaft, and the bearing support seats are installed on the top surface of the frame; the speed reducer is installed on the top surface of the frame, and the output shaft of the speed reducer is connected to one end of the rotating shaft; a plurality of cutter heads are provided, the cutter heads are coaxially sleeved on the circumferential surface of the rotating shaft, and the plurality of cutter heads are evenly distributed along the axis of the rotating shaft, and cutter tips are installed on the circumferential surface of the cutter heads; two groups of crushing knives are slidably arranged on the inner wall of the crushing chamber, the two groups of crushing knives are respectively arranged on both sides of the rotating shaft, the crushing knives are arranged in a staggered manner with the cutter heads, and a push-pull mechanism for driving the crushing knives to slide in the crushing chamber is installed on the outer wall of the crushing chamber.

[0006] Optionally, two pushing and pulling mechanisms are provided, and the two pushing and pulling mechanisms respectively drive a set of the crushing knives; the pushing and pulling mechanism includes a pushing and pulling plate, a guiding plate, a mounting plate and a first hydraulic cylinder; the pushing and pulling plate is connected to the end of the crushing knife outside the crushing chamber, two sets of guiding plates are provided, one set of guiding plates is located below the pushing and pulling plate and connected to the outer wall of the crushing chamber, the other set of guiding plates is located above the pushing and pulling plate and connected to the outer wall of the crushing chamber, and the guiding plates are located between two adjacent crushing knives; the mounting plate is connected to the end of the guiding plate away from the crushing chamber, the first hydraulic cylinder is mounted on the top surface of the mounting plate, and the end of the piston rod of the first hydraulic cylinder is connected to the side surface of the pushing and pulling plate.

[0007] Optionally, four ridges are provided on the circumferential surface of the rotating shaft, and grooves for clamping the ridges are provided on the inner wall of the cutter disc; a fixing component for fixing the cutter disc is provided on the rotating shaft, and each cutter disc is fixed by one fixing component.

[0008] Optionally, the fixing component includes clamping plates and connecting pins; two pairs of clamping plates are provided, and the two pairs of clamping plates both slide in the rotating shaft, and the two pairs of clamping plates are symmetrically arranged about the axis of the rotating shaft; the two side edges of the inner circumferential surface of the cutter disc are rounded surfaces, one end of the clamping plate extends out of the rotating shaft, and the two clamping plates of each pair are located on both sides of the cutter disc, and the end surface of the clamping plate extending out of the rotating shaft fits the rounded surface of the cutter disc; two connecting pins are provided, and the two connecting pins are respectively connected between the ends of the two clamping plates of the two pairs away from the cutter disc; a driving mechanism for driving the connecting pins to slide along the length direction of the clamping plates is provided in the rotating shaft.

[0009] Optionally, the driving mechanism includes a rotating shaft and a turntable; the rotating shaft is rotatably connected in the rotating shaft, and the end of the rotating shaft away from the speed reducer extends out of the rotating shaft; a plurality of turntables are provided, and the plurality of turntables are coaxially connected to the circumferential surface of the rotating shaft, each turntable corresponds to a cutter disc, the turntable is located between the two clamping plates of each pair, two arc-shaped grooves symmetrically arranged about the center of the turntable are provided in the turntable, and the adjacent two connecting pins respectively slide in the two arc-shaped grooves, and the distance between the arc-shaped groove and the center of the turntable increases from one end of the arc-shaped groove to the other end.

[0010] Optionally, a first face gear is coaxially connected to the end of the rotating shaft outside the rotating axis. A second face gear is sleeved on the end of the rotating shaft. The second face gear is located on the end face of the first face gear close to the rotating axis. The first face gear and the second face gear are meshed; two symmetrically arranged slide plates are connected to the end face of the second face gear away from the first face gear. The two slide plates slide inside the end of the rotating shaft; a spring is sleeved on the rotating shaft. One end of the spring is pressed against the end face of the rotating shaft, and the other end of the spring is pressed against the end face of the second face gear; a limiting component for restricting the rotation of the first face gear is installed on the frame.

[0011] Optionally, the limiting component includes a support frame, a second hydraulic cylinder and a spline shaft. The support frame is installed at one end of the frame. The second hydraulic cylinder is installed on the top of the support frame. The piston rod of the second hydraulic cylinder faces the first face gear. The spline shaft is coaxially connected to the end of the piston rod of the second hydraulic cylinder; a spline groove that cooperates with the spline shaft is arranged on the side face of the first face gear away from the second face gear.

[0012] Optionally, the rotating shaft is evenly divided into two parts. The two slide plates are respectively inserted into the end faces of the two parts of the rotating shaft. The two parts of the rotating shaft are detachably connected.

[0013] Optionally, a feeding port is arranged at the top of the crushing bin, and a discharging port is arranged at the bottom of the crushing bin. The crushing knives and the cutter head are both located above the discharging port.

[0014] In summary, the present application includes at least one of the following beneficial technical effects: 1. Put the material into the crushing bin. The reducer drives the rotating shaft to rotate. The rotating shaft drives the cutter head to rotate. The cutter head drives the cutter head to rotate. The cutter head cooperates with the crushing knife to crush the material; when the material is stuck between the crushing knives or between the crushing knife and the cutter head, the pushing and pulling mechanism drives the crushing knife to slide out of the crushing bin, so that the crushing knife gradually disengages from between the cutter heads, so that the material stuck between the crushing knife and the cutter head falls off. During the movement of the crushing knife out of the crushing bin, the material located between the crushing knives is pushed by the inner wall of the crushing bin, so that the material falls off between the crushing knives, and the material stuck between the crushing knives or between the crushing knife and the cutter head can be automatically cleaned, thereby improving the convenience of cleaning the crusher; 2. When the crusher crushes the material, first release the restriction of the limiting component on the first face gear. At this time, the rotation of the rotating shaft drives the slide plate and the clamping plate to move and rotate together. The slide plate drives the second face gear to rotate. The second face gear is pressed against the first face gear under the action of the spring. The second face gear drives the first face gear to rotate through the teeth. The first face gear drives the rotating shaft to rotate synchronously; 3. When it is necessary to release the fixation of the cutter head, the limit assembly restricts the first end face gear, and the speed reducer drives the rotating shaft to rotate in the reverse direction. At this time, the rotating shaft does not rotate, and the turntable does not rotate either. The second end face gear repeatedly compresses the spring, the second end face gear slips on the first end face gear, and the connecting pin slides in the arc-shaped groove, so that the clamping plate gradually retracts into the rotating shaft. Subsequently, the restriction of the limit assembly on the first end face gear is released, and the speed reducer drives the rotating shaft to rotate forward again. Since the cutter head is in an active state, the materials located between the cutter heads are shaken down; 4. When it is necessary to fix the cutter head, the limit assembly restricts the first end face gear again, and the speed reducer drives the rotating shaft to rotate forward. At this time, the rotating shaft does not rotate, and the turntable does not rotate either. The second end face gear repeatedly compresses the spring, the second end face gear slips on the first end face gear, and the connecting pin slides in the arc-shaped groove, so that the clamping plate gradually slides out of the rotating shaft until it presses against the fillet surface of the cutter head. Subsequently, the restriction of the limit assembly on the first end face gear is released, and the crusher can crush the materials again. Brief Description of the Drawings

[0015] Figure 1 is a schematic structural diagram of the crusher according to the embodiment of the present application; Figure 2 is a schematic partial structural diagram of the crusher according to the embodiment of the present application; Figure 3 is a schematic structural diagram of the cutter head according to the embodiment of the present application; Figure 4 is a schematic internal structural diagram of the rotating shaft according to the embodiment of the present application; Figure 5 is Figure 4 an enlarged structural diagram of part A in

[0016] Description of the Reference Numerals: 1, frame; 2, crushing chamber; 21, crushing knife; 22, feeding port; 23, discharging port; 3, rotating shaft; 31, convex strip; 4, speed reducer; 5, cutter head; 51, cutter head; 52, fillet surface; 6, pushing and pulling mechanism; 61, pushing and pulling plate; 62, guiding plate; 63, mounting plate; 64, first hydraulic cylinder; 7, fixing assembly; 71, clamping plate; 72, connecting pin; 8, driving mechanism; 81, rotating shaft; 811, first end face gear; 8111, spline groove; 812, second end face gear; 813, sliding plate; 814, spring; 82, turntable; 821, arc-shaped groove; 9, limit assembly; 91, support frame; 92, second hydraulic cylinder; 93, spline shaft. Detailed Description of the Embodiment

[0017] The following further describes the present application in detail Figures 1 - 5 with reference to the accompanying drawings.

[0018] An embodiment of the present application discloses a wear-resistant roller crusher with a self-cleaning function. Refer to Figures 1 - 5 As shown in Figures 1 - 5 , the roller crusher includes a frame 1, a crushing chamber 2, a rotating shaft 3, a speed reducer 4, and a cutter head 5. The crushing chamber 2 is installed on the top surface of the frame 1. The rotating shaft 3 passes through the crushing chamber 2, and both ends of the rotating shaft 3 extend out of the crushing chamber 2. Both ends of the rotating shaft 3 are rotatably connected to bearing supports, and the bearing supports are installed on the top surface of the frame 1. The speed reducer 4 is installed on the top surface of the frame 1, and the output shaft of the speed reducer 4 is connected to one end of the rotating shaft 3. A plurality of cutter heads 5 are provided. The cutter heads 5 are coaxially sleeved on the circumferential surface of the rotating shaft 3, and the plurality of cutter heads 5 are evenly distributed along the axis of the rotating shaft 3. Knife heads 51 are installed on the circumferential surface of the cutter head 5. Two groups of crushing knives 21 are slidably arranged on the inner wall of the crushing chamber 2. The two groups of crushing knives 21 are respectively arranged on both sides of the rotating shaft 3. The crushing knives 21 and the cutter heads 5 are arranged in an alternating manner. A push-pull mechanism 6 for driving the crushing knives 21 to slide in the crushing chamber 2 is installed on the outer wall of the crushing chamber 2.

[0019] The material is put into the crushing chamber 2. The speed reducer 4 drives the rotating shaft 3 to rotate. The rotating shaft 3 drives the cutter head 5 to rotate. The cutter head 5 drives the knife head 51 to rotate. The knife head 51 cooperates with the crushing knife 21 to crush the material. When the material gets stuck between the crushing knives 21 or between the crushing knives 21 and the cutter heads 5, the push-pull mechanism 6 drives the crushing knives 21 to slide out of the crushing chamber 2, so that the crushing knives 21 gradually move away from between the cutter heads 5, and the material stuck between the crushing knives 21 and the cutter heads 5 falls off. During the movement of the crushing knives 21 out of the crushing chamber 2, the material located between the crushing knives 21 is pushed by the inner wall of the crushing chamber 2, so that the material falls off between the crushing knives 21, and the material stuck between the crushing knives 21 or between the crushing knives 21 and the cutter heads 5 can be automatically cleaned, thereby improving the convenience of cleaning the crusher.

[0020] There are two push-pull mechanisms 6, and the two push-pull mechanisms 6 respectively drive a group of crushing knives 21. The push-pull mechanism 6 includes a push-pull plate 61, a guide plate 62, a mounting plate 63, and a first hydraulic cylinder 64. The push-pull plate 61 is connected to the end of the crushing knife 21 outside the crushing chamber 2. There are two groups of guide plates 62. One group of guide plates 62 is located below the push-pull plate 61 and is connected to the outer wall of the crushing chamber 2. The other group of guide plates 62 is located above the push-pull plate 61 and is connected to the outer wall of the crushing chamber 2. The guide plates 62 are located between adjacent crushing knives 21. The mounting plate 63 is connected to the end of the guide plate 62 away from the crushing chamber 2. The first hydraulic cylinder 64 is installed on the top surface of the mounting plate 63, and the end of the piston rod of the first hydraulic cylinder 64 is connected to the side surface of the push-pull plate 61.

[0021] When it is necessary to drive the crushing knives 21 to move, the first hydraulic cylinder 64 drives the push-pull plate 61 to move. The push-pull plate 61 drives all the crushing knives 21 to move together, and the push-pull plate 61 slides between the guide plates 62.

[0022] The peripheral surface of the rotating shaft 3 is provided with four convex strips 31, and the inner wall of the cutter disc 5 is provided with grooves for clamping the convex strips 31; a fixing component 7 for fixing the cutter disc 5 is arranged on the rotating shaft 3, and each cutter disc 5 is fixed by a fixing component 7.

[0023] When it is necessary to clean the material between the cutter discs 5, the fixing of the cutter disc 5 by the fixing component 7 is released. At this time, the cutter disc 5 can move along the axis direction of the rotating shaft 3. Because the distance between the cutter discs 5 becomes larger, the material located between the cutter discs 5 can fall off from between the cutter discs 5, and then the cutter disc 5 is fixed again by the fixing component 7.

[0024] The fixing component 7 includes clamping plates 71 and connecting pins 72; there are two pairs of clamping plates 71. Both pairs of clamping plates 71 slide inside the rotating shaft 3, and the two pairs of clamping plates 71 are symmetrically arranged about the axis of the rotating shaft 3; both sides of the inner peripheral surface of the cutter disc 5 are rounded surfaces 52. One end of the clamping plate 71 extends out of the rotating shaft 3. The two clamping plates 71 of each pair are located on both sides of the cutter disc 5, and the end surface of the clamping plate 71 extending out of the rotating shaft 3 fits against the rounded surface 52 of the cutter disc 5; there are two connecting pins 72, and the two connecting pins 72 are respectively connected between the ends of the two clamping plates 71 of the two pairs away from the cutter disc 5; a driving mechanism 8 for driving the connecting pins 72 to slide along the length direction of the clamping plates 71 is arranged inside the rotating shaft 3.

[0025] When it is necessary to release the fixing of the cutter disc 5, the driving mechanism 8 drives two adjacent connecting pins 72 to approach each other. The connecting pins 72 drive the two pairs of clamping plates 71 to approach each other, so that the end surface of the clamping plate 71 is separated from the rounded surface 52 of the cutter disc 5, and the clamping of the cutter disc 5 by the clamping plate 71 is released. At this time, the cutter disc 5 moves on the rotating shaft 3; the ends of the clamping plates 71 are not all retracted into the rotating shaft 3. At this time, the cutter disc 5 moves between the two clamping plates 71 of each pair, which is convenient for the material between the cutter discs 5 to fall off; when it is necessary to clamp the cutter disc 5 again, drive two adjacent connecting pins 72 to move away from each other. The connecting pins 72 drive the clamping plates 71, so that the end surface of the clamping plate 71 is tightly attached to the rounded surface 52 of the cutter disc 5. At this time, the cutter disc 5 is clamped again.

[0026] The driving mechanism 8 includes a rotating shaft 81 and a turntable 82; the rotating shaft 81 is rotatably connected inside the rotating shaft 3, and one end of the rotating shaft 81 away from the speed reducer 4 extends out of the rotating shaft 3; there are multiple turntables 82, and the multiple turntables 82 are coaxially connected to the peripheral surface of the rotating shaft 81. Each turntable 82 corresponds to a cutter disc 5. The turntable 82 is located between the two clamping plates 71 of each pair. Two arc-shaped grooves 821 that are symmetrically arranged about the center of the turntable 82 are arranged inside the turntable 82. Two adjacent connecting pins 72 respectively slide inside the two arc-shaped grooves 821, and the distance between the arc-shaped grooves 821 and the center of the turntable 82 increases from one end of the arc-shaped groove 821 to the other end.

[0027] When it is necessary to drive the connecting pin 72 to move, the driving rotating shaft 81 rotates, and the rotating shaft 81 drives all the turntables 82 to rotate. The turntable 82 rotates around the axis of the rotating shaft 81. Due to the restriction of the clamping plate 71 by the rotating shaft 3, the connecting pin 72 slides in the arc-shaped groove 821, and the connecting pin 72 gradually approaches the center of the turntable 82. The connecting pin 72 pulls the clamping plate 71 to retract towards the rotating shaft 3. On the contrary, when the turntable 82 rotates in the reverse direction, under the action of the arc-shaped groove 821, the connecting pin 72 moves away from the center of the turntable 82, and the connecting pin 72 drives the clamping plate 71 to gradually extend out of the rotating shaft 3.

[0028] A first end face gear 811 is coaxially connected to the end of the rotating shaft 81 located outside the rotating shaft 3. A second end face gear 812 is sleeved on the end of the rotating shaft 81. The second end face gear 812 is located on the end face of the first end face gear 811 close to the rotating shaft 3. The first end face gear 811 and the second end face gear 812 are meshed. Two symmetrically arranged slide plates 813 are connected to the end face of the second end face gear 812 away from the first end face gear 811. The two slide plates 813 slide inside the end of the rotating shaft 3. A spring 814 is sleeved outside the rotating shaft 81. One end of the spring 814 is pressed against the end face of the rotating shaft 3, and the other end of the spring 814 is pressed against the end face of the second end face gear 812. A limiting component 9 for restricting the rotation of the first end face gear 811 is installed on the frame 1.

[0029] When the crusher crushes the material, the restriction of the limiting component 9 on the first end face gear 811 is released first. At this time, the rotating shaft 3 rotates to drive the slide plate 813 and the clamping plate 71 to move and rotate together. The slide plate 813 drives the second end face gear 812 to rotate. The second end face gear 812 is pressed against the first end face gear 811 under the action of the spring 814. The second end face gear 812 drives the first end face gear 811 to rotate through the teeth, and the first end face gear 811 drives the rotating shaft 81 to rotate synchronously.

[0030] When it is necessary to release the fixation of the cutter head 5, the limiting component 9 restricts the first end face gear 811. The speed reducer 4 drives the rotating shaft 3 to rotate in the reverse direction. At this time, the rotating shaft 81 does not rotate, and the turntable 82 does not rotate either. The second end face gear 812 repeatedly compresses the spring 814, and the second end face gear 812 slips on the first end face gear 811. The connecting pin 72 slides in the arc-shaped groove 821, so that the clamping plate 71 is gradually retracted into the rotating shaft 3. Then the restriction of the limiting component 9 on the first end face gear 811 is released, and the speed reducer 4 drives the rotating shaft 3 to rotate forward again. Since the cutter head 5 is in a movable state, the material located between the cutter heads 5 is shaken off.

[0031] When it is necessary to fix the cutter head 5, the limiting component 9 restricts the first end face gear 811 again. The speed reducer 4 drives the rotating shaft 3 to rotate forward. At this time, the rotating shaft 81 does not rotate, and the turntable 82 does not rotate either. The second end face gear 812 repeatedly compresses the spring 814, and the second end face gear 812 slips on the first end face gear 811. The connecting pin 72 slides in the arc-shaped groove 821, causing the clamping plate 71 to gradually slide out of the rotating shaft 3 until it presses against the fillet surface 52 of the cutter head 5. Subsequently, the restriction of the limiting component 9 on the first end face gear 811 is released, and the crusher can crush the material again.

[0032] The limiting component 9 includes a support frame 91, a second hydraulic cylinder 92, and a spline shaft 93. The support frame 91 is installed at one end of the frame 1. The second hydraulic cylinder 92 is installed on the top of the support frame 91. The piston rod of the second hydraulic cylinder 92 faces the first end face gear 811. The spline shaft 93 is coaxially connected to the end of the piston rod of the second hydraulic cylinder 92. A spline groove 8111 that cooperates with the spline shaft 93 is provided on the side of the first end face gear 811 away from the second end face gear 812.

[0033] When it is necessary to restrict the first end face gear 811, the second hydraulic cylinder 92 drives the spline shaft 93 to insert into the spline groove 8111, and the spline shaft 93 restricts the first end face gear 811. When it is necessary to release the restriction of the spline shaft 93 on the first end face gear 811, the second hydraulic cylinder 92 drives the spline shaft 93 to push out of the spline groove 8111.

[0034] The rotating shaft 3 is evenly divided into two parts. Two sliding plates 813 are respectively inserted into the end faces of the two parts of the rotating shaft 3, and the two parts of the rotating shaft 3 are connected and closed by bolts. Dividing the rotating shaft 3 into two parts facilitates the installation and disassembly of the rotating shaft 81, the turntable 82, and the clamping plate 71.

[0035] A feeding port 22 is provided at the top of the crushing chamber 2, and a discharge port 23 is provided at the bottom of the crushing chamber 2. The crushing knives 21 and the cutter head 5 are both located above the discharge port 23. By feeding the material from the feeding port 22, the material entering the feeding port 22 is crushed by the crusher, and the crushed material is discharged from the discharge port 23. When the crushing knives 21 are self-cleaning, the fallen material is discharged from the discharge port.

[0036] The implementation principle of a wear-resistant roller crusher with a self-cleaning function in an embodiment of this application is as follows: The material is put into the crushing chamber 2, the speed reducer 4 drives the rotating shaft 3 to rotate, the rotating shaft 3 drives the cutter disc 5 to rotate, the cutter disc 5 drives the cutter head 51 to rotate, and the cutter head 51 cooperates with the crushing knife 21 to crush the material; when the material gets stuck between the crushing knives 21 or between the crushing knife 21 and the cutter disc 5, the pushing and pulling mechanism 6 drives the crushing knife 21 to slide outwards from the crushing chamber 2, so that the crushing knife 21 gradually disengages from between the cutter discs 5, and the material stuck between the crushing knife 21 and the cutter disc 5 falls off. During the movement of the crushing knife 21 outwards from the crushing chamber 2, the material located between the crushing knives 21 is pushed by the inner wall of the crushing chamber 2, so that the material falls off from between the crushing knives 21, and the material stuck between the crushing knives 21 or between the crushing knife 21 and the cutter disc 5 can be automatically cleaned, thereby improving the convenience of cleaning the crusher.

[0037] The above are all preferred embodiments of this application, and the protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A wear-resistant roller crusher with self-cleaning function, characterized in that: The machine comprises a frame (1), a crushing chamber (2), a rotating shaft (3), a reducer (4) and a cutter disc (5); the crushing chamber (2) is mounted on the top surface of the frame (1); the rotating shaft (3) is inserted into the crushing chamber (2); both ends of the rotating shaft (3) extend out of the crushing chamber (2); both ends of the rotating shaft (3) are rotatably connected to bearing support seats; the bearing support seats are mounted on the top surface of the frame (1); the reducer (4) is mounted on the top surface of the frame (1); the output shaft of the reducer (4) is connected to one end of the rotating shaft (3); the cutter disc (5) A plurality of cutter discs (5) are coaxially sleeved on the circumferential surface of the rotating shaft (3), and the plurality of cutter discs (5) are evenly distributed along the axis of the rotating shaft (3). A cutter head (51) is installed on the circumferential surface of the cutter disc (5); two groups of crushing knives (21) are slidably arranged on the inner wall of the crushing chamber (2), and the two groups of crushing knives (21) are respectively arranged on both sides of the rotating shaft (3), and the crushing knives (21) and the cutter discs (5) are staggeredly arranged; and a push-pull mechanism (6) for driving the crushing knives (21) to slide in the crushing chamber (2) is installed on the outer wall of the crushing chamber (2).

2. The wear-resistant roller crusher with self-cleaning function according to claim 1, characterized in that: The push-pull mechanism (6) is provided with two, and the two push-pull mechanisms (6) respectively drive a group of the crushing knives (21); the push-pull mechanism (6) comprises a push-pull plate (61), a guide plate (62), a mounting plate (63) and a first hydraulic cylinder (64); the push-pull plate (61) is connected to the end of the crushing knife (21) located outside the crushing chamber (2), and the guide plates (62) are provided with two groups, one of which is located below the push-pull plate (61) and connected to the first hydraulic cylinder (64). The outer wall of the crushing chamber (2), another group of guide plates (62) are located above the push-pull plate (61) and connected to the outer wall of the crushing chamber (2), and the guide plate (62) is located between two adjacent crushing knives (21); the mounting plate (63) is connected to the end of the guide plate (62) away from the crushing chamber (2), the first hydraulic cylinder (64) is installed on the top surface of the mounting plate (63), and the end of the piston rod of the first hydraulic cylinder (64) is connected to the side of the push-pull plate (61).

3. The wear-resistant roller crusher with self-cleaning function according to claim 1, characterized in that: The rotating shaft (3) is provided with four convex strips (31) on its circumferential surface, and the inner wall of the cutter disc (5) is provided with a groove for clamping the convex strips (31); a fixing assembly (7) for fixing the cutter disc (5) is provided on the rotating shaft (3), and each cutter disc (5) is fixed by one of the fixing assemblies (7).

4. The wear-resistant roller crusher with self-cleaning function according to claim 3, characterized in that: The fixing assembly (7) comprises a clamping plate (71) and a connecting pin (72); two pairs of clamping plates (71) are provided, and the two pairs of clamping plates (71) are both slidable in the rotating shaft (3), and the two pairs of clamping plates (71) are symmetrically arranged about the axis of the rotating shaft (3); the two side edges of the inner circumference of the cutter disc (5) are rounded surfaces (52), one end of the clamping plate (71) extends out of the rotating shaft (3), and the two clamping plates (71) of each pair are located on both sides of the cutter disc (5), and the end surfaces of the clamping plates (71) extending out of the rotating shaft (3) are attached to the rounded surfaces (52) of the cutter disc (5); two connecting pins (72) are provided, and the two connecting pins (72) are respectively connected between the ends of the two pairs of clamping plates (71) away from the cutter disc (5); a driving mechanism (8) for driving the connecting pin (72) to slide along the length direction of the clamping plate (71) is provided in the rotating shaft (3).

5. The wear-resistant roller crusher with self-cleaning function according to claim 4, characterized in that: The driving mechanism (8) comprises a rotating shaft (81) and a rotating disk (82); the rotating shaft (81) is rotatably connected to the rotating shaft (3), and one end of the rotating shaft (81) away from the reducer (4) extends out of the rotating shaft (3); a plurality of rotating disks (82) are provided, and the plurality of rotating disks (82) are coaxially connected to the circumference of the rotating shaft (81), and each rotating disk (82) corresponds to a knife disc (5), and the rotating disk (82) is located between the two clamping plates (71) of each pair, and two arc grooves (821) are symmetrically arranged about the center of the rotating disk (82) are provided in the rotating disk (82), and two adjacent connecting pins (72) slide in the two arc grooves (821) respectively, and the distance between the arc groove (821) and the center of the rotating disk (82) increases from one end of the arc groove (821) to the other end.

6. The wear-resistant roller crusher with self-cleaning function according to claim 5, characterized in that: The end of the rotating shaft (81) located outside the rotating shaft (3) is coaxially connected with a first end face gear (811), and the end of the rotating shaft (81) is sleeved with a second end face gear (812), and the second end face gear (812) is located on the end face of the first end face gear (811) close to the rotating shaft (3), and the first end face gear (811) and the second end face gear (812) are meshed; the end face of the second end face gear (812) away from the first end face gear (811) is connected to two symmetrically arranged slide plates (813), and the two slide plates (813) slide in the end of the rotating shaft (3); a spring (814) is outer-mounted on the rotating shaft (81), one end of the spring (814) is pressed against the end face of the rotating shaft (3), and the other end of the spring (814) is pressed against the end face of the second end face gear (812); a limit assembly (9) for limiting the rotation of the first end face gear (811) is installed on the frame (1).

7. The wear-resistant roller crusher with self-cleaning function according to claim 6, characterized in that: The limit assembly (9) comprises a support frame (91), a second hydraulic cylinder (92) and a spline shaft (93); the support frame (91) is mounted on one end of the frame (1); the second hydraulic cylinder (92) is mounted on the top of the support frame (91); the piston rod of the second hydraulic cylinder (92) faces the first end face gear (811); the spline shaft (93) is coaxially connected to the end of the piston rod of the second hydraulic cylinder (92); and a spline groove (8111) that cooperates with the spline shaft (93) is provided on the side of the first end face gear (811) away from the second end face gear (812).

8. The wear-resistant roller crusher with self-cleaning function according to claim 6, characterized in that: The rotating shaft (3) is divided into two parts, and the two slide plates (813) are respectively inserted into the two end surfaces of the rotating shaft (3), and the two parts of the rotating shaft (3) are detachably connected.

9. The wear-resistant roller crusher with self-cleaning function according to claim 1, characterized in that: The top of the crushing bin (2) is provided with a feeding port (22), the bottom of the crushing bin (2) is provided with a discharging port (23), and the crushing knife (21) and the knife disc (5) are both located above the discharging port (23).

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