Stone crusher

Abstract

The stone crusher comprises a distance expanding mechanism and a discharging mechanism, the lower surface of the distance expanding mechanism is fixedly connected with the discharging mechanism, the distance expanding mechanism comprises distance expanding box outer walls, the two sides of the two distance expanding box outer walls are fixedly connected with distance expanding sliding rails, and the inner walls of the distance expanding sliding rails are slidably connected with sliding plates; a limiting groove is fixedly connected to the inner wall of the distance expanding box outer wall, a roller cutter cylinder is rotatably connected to the inner wall of the limiting groove, driven discs are arranged on the outer wall of the distance expanding box outer wall, coordination gears are slidably connected to the outer walls of the two driven discs, and a buffer spring is extruded through sliding of a transverse sliding block, so that the distance expanding effect is achieved; according to the roller cutter device, the roller cutter cylinders are arranged, so that sludge blocks blocked on the roller cutter cylinders fall into equipment along with the expansion of gaps between the roller cutter cylinders, after the sludge blocks smoothly pass through, the gaps between the roller cutter cylinders are closed and work is recovered under the action of the reset springs and the buffer springs, and the problem that the sludge blocks block the feed port is solved.

Description

Technical Field

[0001] The invention relates to the technical field of civil engineering, and in particular to a stone crusher. Background Art

[0002] The rock crusher used in civil engineering is a mechanical device used to crush rocks and ores. It is widely used in infrastructure construction such as buildings, roads, bridges, etc. Its main function is to crush rocks and ores into small pieces or powder to meet the needs of engineering construction. In civil engineering construction, rock crushers are mainly used in road construction, bridge construction, tunnel excavation and other occasions. They can crush rocks and ores of various hardness, such as granite, limestone, marble, sandstone, etc.

[0003] A rock crusher is a mechanical device used in the ore processing process. It crushes the mined ore into small particles by squeezing and impacting. According to the crushing method, functional positioning, mechanical structure characteristics, etc., the rock crusher can be divided into coarse crushing, medium crushing and fine crushing. It adopts oversized bearings and forged spindles to better withstand the crushing force. In addition, the flywheel design can effectively reduce vibration and make the operation more stable. It is also hydraulically designed, with reliable performance, low failure rate, and adjustable discharge port gasket.

[0004] The stones that need to be crushed during use of the equipment in the prior art are often mixed with silt, which is easy to deposit in the feed port and crushing chamber of the crusher, causing the feed port to be blocked, affecting the normal operation of the crusher. The silt contains a large amount of sediment and moisture, which will cause wear and corrosion to the crushing blades and internal structure of the crusher, shortening the service life of the equipment. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the present invention provides a stone crusher which has the advantages of high applicability and solves the problem of feed port blockage.

[0007] (II) Technical solution

[0008] In order to achieve the above purpose of not only solving the blockage of the feed port but also ensuring the discharge of stones mixed with silt, the present invention provides the following technical solutions: a stone crusher, comprising an expansion mechanism and a discharging mechanism, the discharging mechanism is fixedly connected to the lower surface of the expansion mechanism, the expansion mechanism comprises an outer wall of an expansion box, two expansion sliding tracks are fixedly connected on both sides of the outer walls of the expansion boxes, the inner walls of the expansion sliding tracks are slidably connected with sliding plates, the inner wall of the outer wall of the expansion box is fixedly connected with a limiting groove, the inner wall of the limiting groove is rotatably connected with a roller cutter cylinder, the outer wall of the outer wall of the expansion box is provided with a driven disc, the outer walls of the two driven discs are slidably connected with a coordination gear, one side of the driven disc is rotatably connected with the outer wall of the outer wall of the expansion box, the outer wall of the coordination gear is meshed with a composite gear, one side of the coordination gear is rotatably connected with the outer wall of the outer wall of the expansion box, the inner wall of the driven disc is rotatably connected with a belt, the outer wall of the belt is transmission-connected with a rotating disc, and the outer wall of the belt is rotatably connected with a driving disc.

[0009] As a preferred solution of the stone crusher described in the present invention, the outer wall of the sliding plate is fixedly connected to a fixed frame, and there are two of them, the inner wall of one of the fixed frames is rotatably connected to a fixed column, and both ends of the fixed column are rotatably connected to the outer wall of the driving disc, and the inner wall of the other fixed frame is rotatably connected to a driving motor, the outer wall of the fixed column is fixedly connected to a transmission rod, and both ends of the driving motor are fixedly connected to the outer wall of the rotating disc, and one end of the transmission rod is rotatably connected to a rotating frame.

[0010] As a preferred solution of the stone crusher described in the present invention, the inner wall of the rotating frame is rotatably connected to a spiral rod, the outer wall of the spiral rod is rotatably connected to a lifting sliding block, the outer wall of the lifting sliding block is rotatably connected to a rotating clamping frame, the upper surfaces of the two rotating clamping frames are fixedly connected to a rotating plate, the inner wall of the rotating plate is rotatably connected to the outer wall of the fixed column, the lower surface of the lifting sliding block is fixedly connected to a reset spring, and the inner wall of the lifting sliding block is slidably connected to the sliding frame.

[0011] As a preferred solution of the crusher described in the present invention, the outer wall of the sliding plate is fixedly connected to a sliding limit plate, the inner walls of the two sliding limit plates are slidably connected to a transverse sliding block, the inner wall of the transverse sliding block is rotatably connected to a rotating shaft, the two ends of the rotating shaft are fixedly connected to the outer wall of the driven disc, the outer wall of the rotating shaft is fixedly connected to the inner wall of the roller cylinder, and the outer wall of the transverse sliding block is provided with a buffer spring.

[0012] As a preferred embodiment of the stone crusher of the present invention, a feed port is fixedly connected to the upper surface of the outer wall of the expansion box, and twelve chains are fixedly connected to the inner wall of the feed port.

[0013] As a preferred solution of the crusher described in the present invention, the discharging mechanism includes an outer wall of a discharging box, the outer wall of the outer wall of the discharging box is provided with a rotating block frame, the lower surfaces of the two rotating block frames are fixedly connected with a cylinder, the inner wall of the cylinder is slidably connected with a sliding rod, the lower surface of the outer wall of the discharging box is fixedly connected with a storage box, and the upper surface of the outer wall of the discharging box is fixedly connected to the lower surface of the outer wall of the expansion box.

[0014] As a preferred scheme of the stone crusher described in the present invention, two ends of the outer wall of the discharge box are fixedly connected with a discharge sliding track, the inner wall of the discharge sliding track is slidably connected with a control slider 1, the outer wall of the control slider 1 is rotatably connected to the inner wall of the expansion sliding track, the inner wall of the control slider 1 is rotatably connected to a driving rod, one end of the driving rod is rotatably connected to a triangular limiting plate, the outer wall of the triangular limiting plate is rotatably connected to a driven rod, one end of the driven rod is rotatably connected to a control slider 2, the outer wall of the control slider 2 is slidably connected to the discharge sliding track, the outer wall of the triangular limiting plate is rotatably connected to a retracting rod, the outer wall of the retracting rod is rotatably connected to a grid plate, the inner wall of the grid plate is rotatably connected to the outer wall of the rotating block frame, and the inner wall of the grid plate is provided with grid holes.

[0015] As a preferred embodiment of the stone crusher described in the present invention, the inner wall of the sliding rod is rotatably connected to a rotating column, the outer wall of the rotating column is fixedly connected to a crank column, the outer wall of the rotating column is rotatably connected to an inner rolling cylinder, the outer wall of the inner rolling cylinder is rotatably connected to an outer rolling cylinder, the outer wall of the outer rolling cylinder is fixedly connected to a rotating column, and the inner wall of the outer rolling cylinder is fixedly connected to a grinding hole.

[0016] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects:

[0017] 1. Through the setting of the fixed frame on the sliding plate, by sliding downward along the expansion sliding track, the rotating plate and the rotating clamping frame are driven to make the lifting sliding block pull the spiral rod downward to slide, and the sliding of the spiral rod drives the sliding frame below to slide, and drives the discharging mechanism below to work. Through the sliding of the horizontal sliding block, the buffer spring is squeezed to play the role of expansion. Under the action of the reset spring and the buffer spring, the gap between the rollers is closed and the work is resumed, which solves the problem of silt and stone blocking the feed port and increases the applicability of the equipment.

[0018] 2. By moving the sliding frame downward, the control slider 1 slides downward along the discharge sliding track, and the triangular limit plate rotates by rotating the driving rod. By controlling the slider 2 to slide downward along the discharge sliding track, the retracting rod in the triangular limit plate lowers the grid plate, which plays a role in screening stones, catching the fallen silt and stones and discharging them, thereby achieving the role of intercepting silt and stones and increasing the usability of the equipment.

[0019] 3. By rotating the rotating block frame and pushing the sliding rod through the setting of the cylinder, the outer roller is moved to the bottom of the grid plate, and the crank column is rotated to make it shake. Through the rotation of the inner roller and the outer roller, the stone is finely processed. It can be crushed according to different needs and the required stone is improved. The setting of the chain prevents the stone from overflowing. The output ends at both ends of the driving motor drive the rotating disc to rotate. At the same time, the driving disc and the driven disc drive the roller to rotate through the belt transmission, which provides power. By coordinating the rotation of the gears, the compound gear is driven to rotate at the same time, which plays a coordinating role to prevent the rollers on both sides from rotating at different speeds, causing the stone to fly and cause damage to the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the stone crusher of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the expansion mechanism of the stone crusher of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the sliding plate of the stone crusher of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the buffer spring of the stone crusher of the present invention;

[0025] Figure 5 It is a structural schematic diagram of the feed inlet of the stone crusher of the present invention;

[0026] Figure 6 It is a structural schematic diagram of the discharging mechanism of the stone crusher of the present invention;

[0027] Figure 7 It is a structural schematic diagram of the grating plate of the stone crusher of the present invention;

[0028] Figure 8 It is a structural schematic diagram of the rolling drum of the stone crusher of the present invention.

[0029] In the figure: 100, expansion mechanism; 101, expansion box outer wall; 102, expansion sliding track; 103, sliding plate; 104, limiting groove; 105, driven disc; 106, coordination gear; 107, compound gear; 108, belt; 109, rotating disc; 110, driving disc; 111, fixed frame; 112, fixed column; 113, transmission rod; 114, rotating frame; 115, screw rod; 116, lifting sliding block; 117, rotating clamping frame; 118, rotating plate; 119, reset spring; 120, sliding frame; 121, driving motor; 122, sliding limiting plate; 123, horizontal sliding block; 124. Rotating shaft; 125. Buffer spring; 126. Feed inlet; 127. Chain; 128. Roller; 200. Discharging mechanism; 201. Outer wall of discharging box; 202. Rotating block frame; 203. Cylinder; 204. Sliding rod; 205. Storage box; 206. Discharging sliding track; 207. Control slider 1; 208. Driving rod; 209. Triangular limit plate; 210. Follower rod; 211. Control slider 2; 212. Retracting rod; 213. Grid plate; 214. Grid hole; 215. Rotating column; 216. Crank column; 217. Inner roller; 218. Outer roller; 219. Grinding hole. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] The present invention will be further described below in conjunction with the embodiments.

[0032] Example 1

[0033] Reference Figure 1-5, which is the first embodiment of the present invention, provides a stone crusher, which includes an expansion mechanism 100 and a discharging mechanism 200. The lower surface of the expansion mechanism 100 is fixedly connected with the discharging mechanism 200. The expansion mechanism 100 includes an expansion box outer wall 101. Both sides of the two expansion box outer walls 101 are fixedly connected with expansion sliding rails 102. The inner wall of the expansion sliding rail 102 is slidably connected with a sliding plate 103. The inner wall of the expansion box outer wall 101 is fixedly connected with a limited position Groove 104, the inner wall of the limit groove 104 is rotatably connected to the roller knife cylinder 128, the outer wall of the expansion box outer wall 101 is provided with a driven disc 105, the outer walls of the two driven discs 105 are slidably connected to the coordination gears 106, the outer walls of the coordination gears 106 are meshed with a composite gear 107, the inner wall of the driven disc 105 is rotatably connected to the belt 108, the outer wall of the belt 108 is transmission-connected to the rotating disc 109, and the outer wall of the belt 108 is rotatably connected to the driving disc 110.

[0034] The outer wall of the sliding plate 103 is fixedly connected to a fixing frame 111, and there are two of them. The inner wall of one fixing frame 111 is rotatably connected to a fixing column 112, and the inner wall of the other fixing frame 111 is rotatably connected to a driving motor 121. The outer wall of the fixing column 112 is fixedly connected to a transmission rod 113, and one end of the transmission rod 113 is rotatably connected to a rotating frame 114.

[0035] The inner wall of the rotating frame 114 is rotatably connected to a screw rod 115, the outer wall of the screw rod 115 is rotatably connected to a lifting sliding block 116, the outer wall of the lifting sliding block 116 is rotatably connected to a rotating clamping frame 117, the upper surfaces of the two rotating clamping frames 117 are fixedly connected to a rotating plate 118, the lower surface of the lifting sliding block 116 is fixedly connected to a return spring 119, and the inner wall of the lifting sliding block 116 is slidably connected to a sliding frame 120.

[0036] The outer wall of the sliding plate 103 is fixedly connected to a sliding limit plate 122, the inner walls of the two sliding limit plates 122 are slidably connected to a transverse sliding block 123, the inner wall of the transverse sliding block 123 is rotatably connected to a rotating shaft 124, both ends of the rotating shaft 124 are fixedly connected to the outer wall of the driven disc 105, the outer wall of the rotating shaft 124 is fixedly connected to the inner wall of the roller cylinder 128, and the outer wall of the transverse sliding block 123 is provided with a buffer spring 125.

[0037] A feed port 126 is fixedly connected to the upper surface of the outer wall 101 of the expansion box, and twelve chains 127 are fixedly connected to the inner wall of the feed port 126 .

[0038] During use, when the staff starts the equipment, the stones to be crushed are sent to the equipment from the feed port 126 through the conveyor belt. Under the setting of the chain 127, it plays a role in preventing the stones from overflowing. The output ends at both ends of the driving motor 121 drive the rotating disc 109 to rotate. At the same time, the driving disc 110 and the driven disc 105 drive the roller cutter drum 128 to rotate through the transmission of the belt 108, which plays a role in providing power. By coordinating the rotation of the gear 106, the rotation of the composite gear 107 is driven at the same time, which plays a coordination role to prevent the roller cutter drums 128 on both sides from rotating at different speeds, causing the stones to bounce and cause damage to the equipment. The setting of the extended sliding track 102 and the limit groove 104 plays a role in limiting. When the equipment encounters silt and stones, the silt and stones are blocked on the roller cutter drum 128. As the stones The total amount is gradually increased by the addition of the fixed frame 111 on the sliding plate 103. By sliding downward along the expansion sliding track 102, the rotating plate 118 and the rotating clamping frame 117 are driven to make the lifting sliding block 116 pull the spiral rod 115 downward to slide. The sliding of the spiral rod 115 drives the sliding frame 120 below to slide, and drives the discharging mechanism 200 below to work. The sliding of the lateral sliding block 123 squeezes the buffer spring 125, which plays the role of expansion. The silt and stone blocks on the roller cutter cylinder 128 fall into the equipment as the gap between the roller cutter cylinders 128 expands. When the silt and stone blocks pass smoothly, the gap between the roller cutter cylinders 128 is closed under the action of the reset spring 119 and the buffer spring 125, and the work is resumed, thereby solving the problem of silt and stone blocks blocking the feed port.

[0039] Example 2

[0040] Reference Figure 1-8 , which is the second embodiment of the present invention, provides a crusher, which includes a discharge mechanism 200 including a discharge box outer wall 201, the outer wall of the discharge box outer wall 201 is provided with a rotating block frame 202, the lower surfaces of the two rotating block frames 202 are fixedly connected with a cylinder 203, the inner wall of the cylinder 203 is slidably connected with a sliding rod 204, and the lower surface of the discharge box outer wall 201 is fixedly connected with a storage box 205.

[0041] Both ends of the outer wall 201 of the discharge box are fixedly connected with a discharge sliding track 206, the inner wall of the discharge sliding track 206 is slidably connected with a control slider 207, the inner wall of the control slider 207 is rotatably connected with a driving rod 208, one end of the driving rod 208 is rotatably connected with a triangular limiting plate 209, the outer wall of the triangular limiting plate 209 is rotatably connected with a driven rod 210, one end of the driven rod 210 is rotatably connected with a control slider 211, the outer wall of the triangular limiting plate 209 is rotatably connected with a retractable rod 212, the outer wall of the retractable rod 212 is rotatably connected with a grid plate 213, and the inner wall of the grid plate 213 is provided with grid holes 214.

[0042] The inner wall of the sliding rod 204 is rotatably connected to a rotating column 215, the outer wall of the rotating column 215 is fixedly connected to a crank column 216, the outer wall of the rotating column 215 is rotatably connected to an inner roller 217, the outer wall of the inner roller 217 is rotatably connected to an outer roller 218, and the inner wall of the outer roller 218 is fixedly connected to a grinding hole 219.

[0043] During use, the sliding frame 120 moves downward, so that the control sliding block 1 207 slides downward along the discharge sliding track 206, and the triangular limit plate 209 rotates by rotating the driving rod 208, and the control sliding block 211 slides downward along the discharge sliding track 206, so that the retracting rod 212 in the triangular limit plate 209 puts down the grid plate 213, which plays a role in screening stones, catching the fallen silt stones and discharging them, thereby improving the service life of the equipment. In the process of discharging silt stones, the sliding rod 204 is pushed by the setting of the cylinder 203 through the rotation of the rotating block frame 202, and the outer roller 218 is moved to the bottom of the grid plate 213. When the stone After being discharged, the sliding frame 120 moves upward, so that the control slider 207 slides upward along the discharge sliding track 206, and the triangular limit plate 209 is rotated by rotating the driving rod 208, and the control slider 211 slides upward along the discharge sliding track 206, so that the retracting rod 212 in the triangular limit plate 209 retracts the grid plate 213, and the sliding rod 204 is pushed by the setting of the rotating block frame 202 through the rotation of the cylinder 203 to move the outer roller 218 back to the original position, and the crank column 216 is rotated to make it shake, and the inner roller 217 and the outer roller 218 are rotated to make it perform fine processing on the stone, thereby improving the usability of the equipment.

[0044] The remaining structure is the same as that of Example 1.

[0045] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A stone crusher, comprising an expansion mechanism (100) and a discharge mechanism (200), characterized in that: A discharge mechanism (200) is fixedly connected to the lower surface of the distance expansion mechanism (100); The expansion mechanism (100) comprises an expansion box outer wall (101), two expansion sliding tracks (102) are fixedly connected to both sides of the expansion box outer walls (101), the inner wall of the expansion sliding track (102) is slidably connected to a sliding plate (103), the inner wall of the expansion box outer wall (101) is fixedly connected to a limiting groove (104), the inner wall of the limiting groove (104) is rotatably connected to a roller knife cylinder (128), the outer wall of the expansion box outer wall (101) is provided with a driven disc (105), and the outer walls of the two driven discs (105) are A coordination gear (106) is slidably connected, one side of the driven disc (105) is rotationally connected to the outer wall of the outer wall (101) of the expansion box, the outer wall of the coordination gear (106) is meshed with a composite gear (107), one side of the coordination gear (106) is rotationally connected to the outer wall of the outer wall (101) of the expansion box, the inner wall of the driven disc (105) is rotationally connected to a belt (108), the outer wall of the belt (108) is transmission-connected to a rotating disc (109), and the outer wall of the belt (108) is rotationally connected to a driving disc (110).

2. A stone crusher according to claim 1, characterized in that: The outer wall of the sliding plate (103) is fixedly connected to a fixing frame (111), and there are two fixing frames (111). The inner wall of one of the fixing frames (111) is rotatably connected to a fixing column (112), and both ends of the fixing column (112) are rotatably connected to the outer wall of the driving disc (110). The inner wall of the other fixing frame (111) is rotatably connected to a driving motor (121), and the outer wall of the fixing column (112) is fixedly connected to a transmission rod (113), and both ends of the driving motor (121) are fixedly connected to the outer wall of the rotating disc (109), and one end of the transmission rod (113) is rotatably connected to a rotating frame (114).

3. A stone crusher according to claim 2, characterized in that: The inner wall of the rotating frame (114) is rotatably connected to a spiral rod (115), the outer wall of the spiral rod (115) is rotatably connected to a lifting sliding block (116), the outer wall of the lifting sliding block (116) is rotatably connected to a rotating clamping frame (117), the upper surfaces of the two rotating clamping frames (117) are fixedly connected to a rotating plate (118), the inner wall of the rotating plate (118) is rotatably connected to the outer wall of the fixed column (112), the lower surface of the lifting sliding block (116) is fixedly connected to a reset spring (119), and the inner wall of the lifting sliding block (116) is slidably connected to a sliding frame (120).

4. A stone crusher according to claim 1, characterized in that: The outer wall of the sliding plate (103) is fixedly connected to a sliding limit plate (122), the inner walls of the two sliding limit plates (122) are slidably connected to a transverse sliding block (123), the inner wall of the transverse sliding block (123) is rotatably connected to a rotating shaft (124), the two ends of the rotating shaft (124) are fixedly connected to the outer wall of the driven disc (105), the outer wall of the rotating shaft (124) is fixedly connected to the inner wall of the roller knife cylinder (128), and the outer wall of the transverse sliding block (123) is provided with a buffer spring (125).

5. A stone crusher according to claim 1, characterized in that: A feed port (126) is fixedly connected to the upper surface of the outer wall (101) of the expansion box, and twelve chains (127) are fixedly connected to the inner wall of the feed port (126).

6. A stone crusher according to claim 1, characterized in that: The discharge mechanism (200) comprises an outer wall (201) of a discharge box, the outer wall of the discharge box outer wall (201) is provided with a rotating block frame (202), the lower surfaces of the two rotating block frames (202) are fixedly connected to a cylinder (203), the inner wall of the cylinder (203) is slidably connected to a sliding rod (204), the lower surface of the discharge box outer wall (201) is fixedly connected to a storage box (205), and the upper surface of the discharge box outer wall (201) is fixedly connected to the lower surface of the expansion box outer wall (101).

7. A stone crusher according to claim 6, characterized in that: Both ends of the outer wall (201) of the discharge box are fixedly connected with a discharge sliding track (206), the inner wall of the discharge sliding track (206) is slidably connected with a control slider (207), the outer wall of the control slider (207) is rotatably connected to the inner wall of the expansion sliding track (102), the inner wall of the control slider (207) is rotatably connected with a driving rod (208), one end of the driving rod (208) is rotatably connected with a triangular limiting plate (209), and the outer wall of the triangular limiting plate (209) is rotatably connected with a driven Rod (210), one end of the driven rod (210) is rotatably connected to a control slider 2 (211), the outer wall of the control slider 2 (211) is slidably connected to a material discharge sliding track (206), the outer wall of the triangular limit plate (209) is rotatably connected to a retractable rod (212), the outer wall of the retractable rod (212) is rotatably connected to a grid plate (213), the inner wall of the grid plate (213) is rotatably connected to the outer wall of the rotating block frame (202), and the inner wall of the grid plate (213) is provided with a grid hole (214).

8. A stone crusher according to claim 6, characterized in that: The inner wall of the sliding rod (204) is rotatably connected to a rotating column (215), the outer wall of the rotating column (215) is fixedly connected to a crank column (216), the outer wall of the rotating column (215) is rotatably connected to an inner rolling cylinder (217), the outer wall of the inner rolling cylinder (217) is rotatably connected to an outer rolling cylinder (218), the outer wall of the outer rolling cylinder (218) is fixedly connected to the rotating column (215), and the inner wall of the outer rolling cylinder (218) is fixedly connected to a grinding hole (219).

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