Excavator part cutting device

Abstract

The invention relates to the technical field of cutting devices, in particular to an excavator part cutting device which comprises an excavator part cutting device body, a base, a roller conveyor and a bottom cutter, the roller conveyor and the bottom cutter are both installed on the base, the bottom cutter is located between two rollers in the roller conveyor, and the excavator part cutting device further comprises a lifting mechanism installed on the base, a plate I is mounted at the driving end of the driving shaft; the cutting mechanism is installed on the first plate, and a cutting knife on the cutting mechanism is located over the bottom cutting knife and matched with the bottom cutting knife to cut the plate-shaped part. A mounting frame is driven to move, then a moving block and a third plate are driven to move in the direction of a pressure sensor, the pressure sensor is pressed through the third plate, driving equipment stops running, then the edge of a cutting knife is polished before and after cutting each time, the cutting knife does not need to be taken down for polishing, and the efficiency is improved. And the machining efficiency of the plate-shaped parts is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cutting devices, and in particular to a cutting device for excavator parts. Background Art

[0002] During the production process of excavator parts, a cutting device is needed to cut the excavator parts. The plate-shaped parts are placed on the workbench, the workbench transports the parts to the cutting position, and then the excavator parts are cut by the lower and upper tools.

[0003] The Chinese invention patent with publication number CN119839355A discloses a shearing machine for steel processing, which belongs to the technical field of steel plate shearing devices. It includes a main support platform and a secondary support platform arranged at one end of the main support platform. A gap is left between the main support platform and the secondary support platform. The steel is stacked in a box. Since the steel is stacked in a vertical state, it is convenient to take the steel later.

[0004] During the use of the excavator's plate-like parts cutting device, the blade of the cutter will directly act on the plate-like parts and cut them, which will cause the blade of the cutter to curl, thereby affecting subsequent cutting. At this time, the cutter needs to be removed and polished, but this requires the cutting device to stop running, thereby affecting the cutting efficiency of the excavator's plate-like parts. Summary of the Invention

[0005] The purpose of the present invention is to address the problems existing in the background technology and to propose an excavator parts cutting device.

[0006] The technical solution of the present invention is: an excavator parts cutting device, comprising a base, a roller conveyor and a bottom cutter, wherein the roller conveyor and the bottom cutter are both mounted on the base, and the bottom cutter is located between two rollers in the roller conveyor, and further comprising:

[0007] A lifting mechanism is mounted on the base, and a plate 1 is mounted on the driving end thereof;

[0008] The cutting mechanism is mounted on the first plate, wherein the cutting knife is located directly above the bottom cutter and cooperates with the bottom cutter to cut the plate-shaped parts;

[0009] a lubrication mechanism, which is mounted on plate one and is used to spray lubricating fluid when cutting thicker parts;

[0010] The grinding mechanism includes a pressing assembly, a driving assembly, a switch assembly, a mounting frame and a grinding rod; the pressing assembly is installed on plate one, the mounting frame is installed on the pressing assembly, and the mounting frame is internally installed with a driving assembly for driving the grinding rod to rotate and grind the cutting knife; the grinding rod is installed on the movable end of the driving mechanism and is located on the moving path of the cutting knife; the switch assembly is installed on plate one; the lifting mechanism drives plate one to descend, the pressing assembly presses the plate-shaped parts, and then the driving assembly drives the grinding rod to rotate to grind the cutting knife blade.

[0011] Preferably, the pressing assembly includes an elastic member 1, a moving block, an elastic member 2 and a pressing plate;

[0012] A movable groove is opened on plate 1, and elastic part 1 is installed in the rectangular groove, and the other end of the elastic part is connected to the movable block. Elastic part 2 is installed at the bottom of the movable block, and the other end of the elastic part 2 is installed on the mounting frame; a pressure plate is installed at the bottom of the mounting frame; the plate-like parts are transported to the bottom of the pressure plate, and then the elasticity of elastic part 2 drives the pressure plate at the bottom of the mounting frame to press the plate-like parts.

[0013] Preferably, the drive assembly includes a gear, a rack and a transmission belt;

[0014] The rack is installed on the pressing assembly, the gear is rotatably connected in the mounting frame, and the gear and the rack are meshed; the grinding rod is rotatably connected in the mounting frame, and both ends of the gear and the grinding rod are connected to the transmission belt, and the gear and the grinding rod are connected through the transmission belt.

[0015] Preferably, the switch assembly includes a pressure sensor and a plate three;

[0016] Plate three is mounted on the moving block, and the pressure sensor is mounted on the rectangular slot and located on the moving path of plate three.

[0017] Preferably, the lifting mechanism comprises a drive device, a threaded rod and rod one;

[0018] The driving device is installed on the base, the output shaft of which is connected to the threaded rod, and the plate one is threadedly fitted on the threaded rod; the rod one is installed in the base, and the other end of the plate one is sleeved on the rod one.

[0019] Preferably, the cutting mechanism comprises a hydraulic cylinder, a conveying device 1, a spring 1 and a piston shaft;

[0020] The hydraulic cylinder is installed on the plate one, and the conveying device one is installed on the hydraulic cylinder; the spring one is installed in the hydraulic cylinder, and the other end of the spring is connected with the piston shaft, and the piston shaft is connected with the cutting knife.

[0021] Preferably, the lubrication mechanism includes an opening and closing component, a pressure component, a one-way valve, a storage cylinder, a cylinder 1, a pipe 1, a cylinder 2, a spray pipe, a cylinder 3, a pipe 2 and a conveying device 2;

[0022] The storage cylinder is installed on plate one, and its bottom end passes through the one-way valve, and the other end of the one-way valve passes through the hydraulic cylinder; the bottom end of the storage cylinder passes through pipe two; cylinder three is installed on pipe two; conveying equipment two is installed on the storage cylinder; pipe one passes through the hydraulic cylinder and is installed with cylinder one; cylinder two passes through pipe one, and its other end passes through the spray pipe, the spray pipe is installed on the cutting knife, and the opening and closing assembly is installed in plate one.

[0023] Preferably, the opening and closing assembly includes a fourth elastic member, a second plate, a second rod, a first cylinder, a second cylinder and a guide groove;

[0024] Elastic member four is installed in plate one, and its other end is connected to plate two. The two ends of plate two are respectively connected to cylinder one and cylinder two. In the initial state, cylinder one is located on one side of the connection between tube one and tube one, and cylinder two is located at the connection between tube three and tube two. A guide groove is provided on rod one, and rod two is installed on plate two and fits with rod one.

[0025] Preferably, the pressure assembly includes an elastic member 3 and a plug;

[0026] The elastic member three is installed in the cylinder two, and the other end thereof is connected to the plugging head, which is inserted into the pipe one.

[0027] Compared with the prior art, the above technical solution of the present invention has the following beneficial technical effects:

[0028] The plate-like parts are transported by the roller conveyor, and the cutting position is located between the bottom cutter and the cutting knife. Then the driving device is started to drive the threaded rod to rotate, thereby driving the plate one to descend along the threaded rod and rod one. At this time, the elasticity of the elastic part two drives the pressure plate at the bottom end of the mounting frame to press the plate-like parts, thereby pressing and fixing the plate-like parts, thereby avoiding the displacement of the plate-like parts during the subsequent cutting process.

[0029] Then the mounting frame stops descending, and plate one drives the rack to continue descending, and the meshing of the rack and the gear drives the gear to rotate, and the rotation of the gear drives the transmission belt to operate, and then the transmission belt drives the grinding rod to rotate, so that the blade of the cutting knife is polished by the grinding rod, and as plate one drives the cutting knife to continue descending, the blade is separated from the grinding rod, and then the blade of the cutting knife pushes the grinding rod open, thereby driving the mounting frame to move, and then driving the moving block and plate three to move in the direction of the pressure sensor, and the pressure sensor is pressed by plate three to stop the driving device from running, thereby realizing the grinding of the blade of the cutting knife before and after each cutting, so that the cutting knife no longer needs to be removed for grinding, thereby improving the processing efficiency of plate-like parts.

[0030] When cutting thicker plate-like parts, the threaded rod stops running early, the height of plate one is higher, rod two does not enter the guide groove, cylinder one is in the initial state, the lubricating fluid is filled under the piston shaft in the inner cavity of the hydraulic cylinder, and then the conveying device one is started to convey the hydraulic oil to the inner cavity of the hydraulic cylinder, and the piston shaft is driven to descend in the inner cavity of the hydraulic cylinder by the hydraulic oil, thereby driving the cutting knife to descend. At this time, the lubricating fluid in the inner cavity of the hydraulic cylinder first opens the blockage head along the pipe one, and is transported to the spray pipe through the pipe two, and then the lubricating fluid is sprayed onto the cutting knife through the spray pipe, and then flows downward along the cutting knife, and then the cutting knife descends to cut the plate-like parts.

[0031] If it is a thin plate-like component, rod two enters the guide groove, and the elasticity of elastic member four drives cylinder two to leave the connection between cylinder three and tube two, and cylinder one moves to the connection between cylinder one and tube one, so that the lubricating liquid will not be discharged along tube one during the subsequent descent of the piston shaft, but will return to the storage cylinder. In this way, when cutting thicker plate-like components, lubricating liquid is sprayed to assist the cutting knife in cutting the plate-like components, while when cutting thinner plate-like components, lubricating liquid is not sprayed, thereby saving lubricating liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the structure of the present invention;

[0033] Figure 2 This is a schematic structural diagram of the plate 1 proposed in the present invention;

[0034] Figure 3 For the present invention Figure 2 A in the middle is an enlarged schematic diagram;

[0035] Figure 4 This is a schematic structural diagram of the mounting frame proposed by the present invention;

[0036] Figure 5 This is a schematic structural diagram of the gear and grinding rod proposed in the present invention;

[0037] Figure 6 The present invention proposes Figure 5 The enlarged schematic diagram of point B in the middle;

[0038] Figure 7 This is a schematic diagram of the structure of the cutting knife proposed by the present invention;

[0039] Figure 8 The present invention proposes Figure 7 The enlarged schematic diagram of point C in the middle;

[0040] Figure 9 This is a schematic structural diagram of the cutting knife and spray pipe proposed in the present invention.

[0041] Figure 1: Base; 2: Roller conveyor; 3: Bottom cutter; 4: Driving device; 5: Threaded rod; 6: Rod 1; 7: Plate 1; 8: Guide groove; 9: Hydraulic cylinder; 10: Conveying device 1; 11: Spring 1; 12: Piston shaft; 13: Cutting knife; 14: Elastic member 1; 15: Moving block; 16: Elastic member 2; 17: Mounting frame; 18: Gear; 19: Rack; 20: Transmission belt ; 21. Grinding rod; 22. Pressure plate; 23. One-way valve; 24. Storage cylinder; 25. Cylinder one; 26. Tube one; 27. Cylinder two; 28. Elastic part three; 29. Plug; 30. Spray pipe; 31. Cylinder three; 32. Tube two; 33. Elastic part four; 34. Plate two; 35. Rod two; 36. Cylinder one; 37. Cylinder two; 38. Conveying equipment two; 39. Pressure sensor; 40. Plate three. DETAILED DESCRIPTION

[0042] Example 1, as Figures 1-9 As shown, the present invention proposes an excavator parts cutting device, including a lifting mechanism, a cutting mechanism, a lubricating mechanism, a grinding mechanism, a base 1, a roller conveyor 2 and a bottom cutter 3. The roller conveyor 2 and the bottom cutter 3 are both installed on the base 1. The bottom cutter 3 is located between two rollers in the roller conveyor. The device also includes:

[0043] The lifting mechanism is mounted on the base 1, and a plate 7 is mounted on its driving end;

[0044] The cutting mechanism is mounted on plate 1 7, with the cutting blade 13 located directly above the bottom cutter 3 and cooperating with the bottom cutter 3 to cut the plate-shaped parts;

[0045] The lubrication mechanism is mounted on plate 1 7 and is used to spray lubricating fluid when cutting thicker parts;

[0046] The grinding mechanism includes a pressing assembly, a driving assembly, a switch assembly, a mounting frame 17 and a grinding rod 21; the pressing assembly is mounted on plate 17, the mounting frame 17 is mounted on the pressing assembly, and a driving assembly for driving the grinding rod 21 to rotate and grind the cutting knife 13 is installed inside the mounting frame 17; the grinding rod 21 is mounted on the movable end of the driving mechanism and is located on the moving path of the cutting knife 13; the switch assembly is mounted on plate 17; the lifting mechanism drives plate 17 to descend, the pressing assembly presses the plate-shaped parts, and then the driving assembly drives the grinding rod 21 to rotate to grind the blade of the cutting knife 13.

[0047] There are two grinding rods 21 , which are in contact with each other. The cutting knife 13 is located above the contact point between the two grinding rods 21 .

[0048] The pressing assembly includes an elastic member 14, a moving block 15, an elastic member 2 16 and a pressing plate 22;

[0049] A movable groove is provided on plate 1 7, and elastic member 1 14 is installed in the rectangular groove, with the other end connected to the movable block 15, and elastic member 2 16 is installed at the bottom of the movable block 15, and the other end of elastic member 2 16 is installed on the mounting frame 17; a pressure plate 22 is installed at the bottom of the mounting frame 17; the plate-like parts are transported to the bottom of the pressure plate 22, and then the elasticity of elastic member 2 16 drives the pressure plate 22 at the bottom of the mounting frame 17 to press the plate-like parts.

[0050] Slide blocks are installed on both sides of the moving block 15, and the moving block 15 is slidably connected in the rectangular groove through the slide blocks.

[0051] The drive assembly includes a gear 18, a rack 19 and a drive belt 20;

[0052] The rack 19 is installed on the pressing assembly, the gear 18 is rotatably connected in the mounting frame 17, and the gear 18 and the rack 19 are engaged; the grinding rod 21 is rotatably connected in the mounting frame 17, and both ends of the gear 18 and the grinding rod 21 are connected to the transmission belt 20, and the gear 18 and the grinding rod 21 are connected through the transmission belt 20.

[0053] Transmission wheels are installed on both sides of the gear 18 and the polishing rod 21 . The diameter of the transmission wheel on the gear 18 is smaller than that on the polishing rod 21 .

[0054] The switch assembly includes a pressure sensor 39 and a plate three 40;

[0055] Plate three 40 is mounted on the moving block 15 , and the pressure sensor 39 is mounted on the rectangular groove and located on the moving path of plate three 40 .

[0056] The pressure sensor 39 is electrically connected to the driving device 4 .

[0057] The lifting mechanism includes a driving device 4, a threaded rod 5 and a rod 6;

[0058] The driving device 4 is installed on the base 1, and its output shaft is connected to the threaded rod 5. The plate 7 is threadedly fitted on the threaded rod 5; the rod 6 is installed in the base 1, and the other end of the plate 7 is sleeved on the rod 6.

[0059] The cutting mechanism includes a hydraulic cylinder 9, a conveying device 10, a spring 11 and a piston shaft 12;

[0060] The hydraulic cylinder 9 is installed on the plate 7, and the conveying device 10 is installed on the hydraulic cylinder 9; the spring 11 is installed in the hydraulic cylinder 9, and the other end of the spring 11 is connected to the piston shaft 12, and the piston shaft 12 is connected to the cutting knife 13.

[0061] Example 2, as Figure 4-Figure 9As shown, the excavator parts cutting device proposed by the present invention, compared with the embodiment 1, the lubrication mechanism of this embodiment includes an opening and closing component, a pressure component, a one-way valve 23, a storage cylinder 24, a cylinder 1 25, a pipe 1 26, a cylinder 2 27, a spray pipe 30, a cylinder 3 31, a pipe 2 32 and a conveying device 2 38;

[0062] The storage cylinder 24 is installed on plate 1 7, and its bottom end passes through the one-way valve 23, and the other end of the one-way valve 23 passes through the hydraulic cylinder 9; the bottom end of the storage cylinder 24 passes through pipe 2 32; cylinder 3 31 is installed on pipe 2 32; conveying equipment 2 38 is installed on the storage cylinder 24; pipe 1 26 passes through the hydraulic cylinder 9 and is installed with cylinder 1 25; cylinder 2 27 passes through pipe 1 26, and its other end passes through the spray pipe 30, which is installed on the cutting knife 13. The spray pipe 30 can rise and fall with the cutting knife 13, and the opening and closing assembly is installed in plate 1 7.

[0063] In the initial state, the area below the piston shaft 12 in the inner cavity of the hydraulic cylinder 9 is filled with lubricating fluid. When the piston shaft 12 rises in the inner cavity of the hydraulic cylinder 9, the lubricating fluid in the inner cavity of the storage cylinder 24 is drawn into the hydraulic cylinder 9 through the one-way valve 23, while the lubricating fluid in the inner cavity of the hydraulic cylinder 9 cannot enter the storage cylinder 24 through the one-way valve 23.

[0064] Before use, the input end of the conveying device 10 is connected to a pipeline for conveying hydraulic oil, and the input end of the conveying device 2 38 is connected to a pipeline for conveying lubricating liquid.

[0065] The opening and closing assembly includes an elastic member 4 33, a plate 2 34, a rod 2 35, a cylinder 1 36, a cylinder 2 37 and a guide groove 8;

[0066] Elastic member 4 33 is installed in plate 1 7, and its other end is connected to plate 2 34. The two ends of plate 2 34 are respectively connected to cylinder 1 36 and cylinder 2 37. In the initial state, cylinder 1 36 is located on one side of the connection between cylinder 1 25 and tube 1 26, and cylinder 2 37 is located at the connection between cylinder 3 31 and tube 2 32; a guide groove 8 is provided on rod 1 6, and rod 2 35 is installed on plate 2 34 and fits with rod 1 6.

[0067] The two sides of tube 2 32 are respectively connected with the hydraulic cylinder 9 and the storage cylinder 24. When cylinder 3 31 and tube 2 32 are connected and cylinder 1 25 and tube 1 26 are blocked, the lubricating fluid in the inner cavity of the hydraulic cylinder 9 will be squeezed back into the inner cavity of the storage cylinder 24 through cylinder 3 31 and tube 2 32 when the piston shaft 12 descends.

[0068] The pressure assembly includes an elastic member 3 28 and a plug 29;

[0069] The elastic member 3 28 is installed in the cylinder 2 27 , and the other end thereof is connected to the plug 29 , which is inserted into the tube 1 26 .

[0070] The elastic member 1 14 , the elastic member 2 16 , the elastic member 4 33 and the elastic member 3 28 are all composed of a telescopic rod and a spring 2.

[0071] In summary, in the present invention, the plate-like parts are placed on the roller conveyor 2, and the plate-like parts are conveyed by the roller conveyor 2, and the cutting part of the plate-like parts is located between the cutting knife 13 and the bottom cutting knife 3. Then the driving device 4 is started to drive the threaded rod 5 to rotate, so that the plate 7 descends along the axial direction of the threaded rod 5 and the rod 1 6. First, the pressing plate 22 contacts the plate-like parts to press and fix the plate-like parts.

[0072] Then the mounting frame 17 stops moving, and the plate 17 drives the rack 19 to continue to descend, and then drives the gear 18 to rotate through the meshing of the rack 19 and the gear 18, and the gear 18 drives the transmission belt 20 to operate, and then drives the grinding rod 21 to rotate through the transmission belt 20. At the same time, the cutting knife 13 also continues to descend. At this time, the blade of the cutting knife 13 contacts the grinding rod 21, and the two grinding rods 21 grind the blade of the cutting knife 13.

[0073] When the blade of the cutting knife 13 is separated from the grinding rod 21 and the blade body is in contact with the grinding rod 21, the cutting knife 13 pushes the grinding rod 21 open, thereby driving the moving block 15 above the elastic part 2 16 to move toward the elastic part 1 14. At this time, the plate 3 40 compression pressure sensor 39 is triggered, and the driving device 4 stops running, thereby achieving that when the blade of the cutting knife 13 is in contact with the plate-like component, the threaded rod 5 stops rotating. If the plate-like component is thicker, the height of the plate 1 7 is higher at this time. If the plate-like component is lighter, the height of the plate 1 7 is lower at this time.

[0074] When facing thicker plate-like parts, rod 2 35 does not enter the inner cavity of guide groove 8, cylinder 1 25 and tube 1 26 are in a through state, and then the conveying device 10 is started to convey the hydraulic oil to the upper part of the piston shaft 12 in the inner cavity of hydraulic cylinder 9, and the piston shaft 12 is driven down by the hydraulic oil. The piston shaft 12 descends and the lubricating fluid below the piston shaft 12 in the inner cavity of hydraulic cylinder 9 is conveyed to tube 1 26, and the plugging head 29 is squeezed down. When the plugging head 29 descends, the lubricating fluid enters the spray pipe 30 through cylinder 2 27, and is sprayed to the surface of the cutting knife 13 through the spray pipe 30, and flows along the cutting knife 13 to the cutting position of the plate-like parts, and then the cutting knife 13 cuts the plate-like parts, and the lubrication of the lubricating fluid makes it easier for the cutting knife 13 to cut thicker plate-like parts.

[0075] When facing lighter plate-like parts, rod 2 35 enters the guide groove 8, and the elasticity of elastic member 4 33 drives plate 2 34 to move toward rod 2 35, thereby causing cylinder 1 36 to move to the connection between cylinder 1 25 and tube 1 26, blocking tube 1 26, while cylinder 2 37 leaves the connection between cylinder 3 31 and tube 2 32, allowing tube 2 32 to pass through. When the hydraulic cylinder 9 drives the cutting knife 13 to descend, the lubricating fluid below the piston shaft 12 in the inner cavity of the hydraulic cylinder 9 returns to the inner cavity of the storage cylinder 24 along tube 2 32.

[0076] When the cutting is completed, the hydraulic oil in the inner cavity of the hydraulic cylinder 9 is extracted, and then the piston shaft 12 is driven to rise by the spring 11, and the lubricating fluid in the inner cavity of the storage cylinder 24 is drawn into the lower part of the piston shaft 12 in the inner cavity of the hydraulic cylinder 9 through the one-way valve 23. As the cutting knife 13 rises, the two grinding rods 21 separate from the cutting knife 13, and then the elastic member 14 drives the plate 3 40 to separate from the pressure sensor 39, and the driving device 4 drives the threaded rod 5 to operate and drive the plate 1 7 to rise.

[0077] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. An excavator parts cutting device, comprising a base (1), a roller conveyor (2) and a bottom cutter (3), wherein the roller conveyor (2) and the bottom cutter (3) are both mounted on the base (1), and the bottom cutter (3) is located between two rollers in the roller conveyor, characterized in that: Also includes: A lifting mechanism is mounted on a base (1) and has a plate (7) mounted on its driving end; A cutting mechanism, which is mounted on the first plate (7), wherein the cutting knife (13) is located directly above the bottom cutting knife (3) and cooperates with the bottom cutting knife (3) to cut the plate-shaped parts; A lubricating mechanism, which is mounted on plate one (7) and is used to spray lubricating fluid when cutting thicker parts; The grinding mechanism comprises a pressing assembly, a driving assembly, a switch assembly, a mounting frame (17) and a grinding rod (21); the pressing assembly is mounted on the first plate (7), the mounting frame (17) is mounted on the pressing assembly, and the mounting frame (17) is internally mounted with a driving assembly for driving the grinding rod (21) to rotate and grind the cutting blade (13); the grinding rod (21) is mounted on the movable end of the driving mechanism and is located on the moving path of the cutting blade (13); the switch assembly is mounted on the first plate (7); the lifting mechanism drives the first plate (7) to descend, the pressing assembly presses the plate-shaped parts, and then the driving assembly drives the grinding rod (21) to rotate and grind the cutting blade of the cutting blade (13).

2. The excavator parts cutting device according to claim 1, characterized in that: The pressing assembly includes an elastic member 1 (14), a moving block (15), an elastic member 2 (16) and a pressing plate (22); A movable groove is provided on the plate (7), and the elastic member (14) is installed in the rectangular groove, and the other end of the elastic member (14) is connected to the movable block (15). The bottom of the movable block (15) is installed with the elastic member (2) (16), and the other end of the elastic member (2) (16) is installed with the mounting frame (17); the bottom end of the mounting frame (17) is installed with a pressing plate (22); the plate-like parts are transported to the bottom of the pressing plate (22), and then the elasticity of the elastic member (2) (16) drives the pressing plate (22) at the bottom of the mounting frame (17) to press the plate-like parts.

3. The excavator parts cutting device according to claim 1, characterized in that: The drive assembly includes a gear (18), a rack (19) and a transmission belt (20); The rack (19) is mounted on the pressing assembly, the gear (18) is rotatably connected in the mounting frame (17), and the gear (18) and the rack (19) are meshed; the grinding rod (21) is rotatably connected in the mounting frame (17), both ends of the gear (18) and the grinding rod (21) are connected to the transmission belt (20), and the gear (18) and the grinding rod (21) are connected by the transmission belt (20).

4. The excavator parts cutting device according to claim 2, characterized in that: The switch assembly includes a pressure sensor (39) and a plate three (40); The plate three (40) is mounted on the moving block (15), and the pressure sensor (39) is mounted on the rectangular groove and is located on the moving path of the plate three (40).

5. The excavator parts cutting device according to claim 1, characterized in that: The lifting mechanism includes a driving device (4), a threaded rod (5) and a rod (6); The driving device (4) is installed on the base (1), and its output shaft is connected to the threaded rod (5). The plate (7) is threadedly fitted on the threaded rod (5); the rod (6) is installed in the base (1), and the other end of the plate (7) is sleeved on the rod (6).

6. The excavator parts cutting device according to claim 1, characterized in that: The cutting mechanism comprises a hydraulic cylinder (9), a conveying device (10), a spring (11) and a piston shaft (12); The hydraulic cylinder (9) is mounted on the plate (7), and the conveying device (10) is mounted on the hydraulic cylinder (9); the spring (11) is mounted in the hydraulic cylinder (9), and the other end of the spring is connected to the piston shaft (12), and the piston shaft (12) is connected to the cutting knife (13).

7. The excavator parts cutting device according to claim 6, characterized in that: The lubrication mechanism includes an opening and closing assembly, a pressure assembly, a one-way valve (23), a storage cylinder (24), a cylinder 1 (25), a pipe 1 (26), a cylinder 2 (27), a spray pipe (30), a cylinder 3 (31), a pipe 2 (32) and a conveying device 2 (38); The storage cylinder (24) is installed on the plate (7), and its bottom end passes through the one-way valve (23), and the other end of the one-way valve (23) passes through the hydraulic cylinder (9); the bottom end of the storage cylinder (24) passes through the pipe (32); the cylinder (31) is installed on the pipe (32); the conveying device (38) is installed on the storage cylinder (24); the pipe (26) passes through the hydraulic cylinder (9) and is installed with the cylinder (25); the cylinder (27) passes through the pipe (26), and the other end passes through the spray pipe (30), the spray pipe (30) is installed on the cutting knife (13), and the opening and closing assembly is installed in the plate (7).

8. The excavator parts cutting device according to claim 7, characterized in that: The opening and closing assembly includes a fourth elastic member (33), a second plate (34), a second rod (35), a first cylinder (36), a second cylinder (37) and a guide groove (8); The elastic member 4 (33) is installed in the plate 1 (7), and the other end thereof is connected to the plate 2 (34). The two ends of the plate 2 (34) are respectively connected to the cylinder 1 (36) and the cylinder 2 (37). In the initial state, the cylinder 1 (36) is located on one side of the connection between the cylinder 1 (25) and the tube 1 (26), and the cylinder 2 (37) is located at the connection between the cylinder 3 (31) and the tube 2 (32). The guide groove (8) is provided on the rod 1 (6), and the rod 2 (35) is installed on the plate 2 (34) and fits with the rod 1 (6).

9. The excavator parts cutting device according to claim 7, characterized in that: The pressure assembly includes an elastic member 3 (28) and a plug (29); The elastic member 3 (28) is installed in the cylinder 2 (27), and the other end thereof is connected to the plugging head (29), which is inserted into the pipe 1 (26).

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