Bicycle rim cutting machine

Abstract

The bicycle rim cutting machine comprises a base, a workbench is fixedly installed at the top of the base, fixing seats are fixedly installed on the upper surface of the outer ring of the workbench in an annular array mode with the central axis of the workbench as the axis, and first positioning rollers are installed at the ends of the fixing seats; moving seats are installed on the upper surface of the inner ring of the workbench in an annular array sliding mode with the central axis of the workbench as the axis, the rotating angle of the spiral aluminum alloy pipe is positioned through the positioning plate, the spiral aluminum alloy pipe is cut through the cutting assembly, the device is used for producing small waste materials at the end of the spiral aluminum alloy pipe, the production cost is reduced, and the production efficiency is improved. The topmost position of the spiral aluminum alloy pipe is fixed through the pressing rod, in the cutting process of the spiral aluminum alloy pipe, the position of the spiral aluminum alloy pipe can be fixed, the situation that the spiral aluminum alloy pipe shakes is prevented, leveling of the cutting position of the spiral aluminum alloy pipe is achieved, and the cutting efficiency of the spiral aluminum alloy pipe is improved. And the cutting quality of the spiral aluminum alloy pipe is improved.

Description

Technical Field

[0001] The invention relates to the technical field of bicycle rim processing, in particular to a bicycle rim cutting machine. Background Art

[0002] The bicycle rim is the rotating part of the wheel core connected to the inner profile of the bicycle tire through a column, that is, the metal component mounted on the axis in the center of the tire that supports it. It is mostly made of long straight aluminum alloy tubes. During the production process of bicycle rims, the long straight aluminum alloy tubes are bent into multiple spiral shapes, and then cut into individual rims. Finally, they are processed into individual bicycle rims through trimming, welding and other steps.

[0003] In the prior art, after a long straight aluminum alloy tube is shaped into a multi-turn spiral, the spiral aluminum alloy tube is placed on a cutting platform, and the spiral aluminum alloy tube is fixed by squeezing the spiral aluminum alloy tube through a positioning roller, and the spiral aluminum alloy tube is cut by controlling a rotating disc cutter. However, when the spiral aluminum alloy tube is placed on the cutting platform, the position difference between the end of the spiral aluminum alloy tube and the rotating disc cutter is large, so that a large amount of waste aluminum alloy tube is cut, which increases the production cost of the bicycle rim. At the same time, when the spiral aluminum alloy tube is cut using the rotating disc cutter, the rotating disc cutter will squeeze the diameter position of the spiral aluminum alloy tube, which will cause the spiral aluminum alloy tube to shake, so that the cutting position of the bicycle rim will be uneven, affecting the cutting quality of the end of the bicycle rim. Summary of the invention

[0004] The object of the present invention is to provide a bicycle rim cutting machine to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a bicycle rim cutting machine, comprising a base, a workbench fixedly installed on the top of the base, a fixed seat fixedly installed on the upper surface of the outer ring of the workbench in a ring array with the central axis of the workbench as the axis, a first positioning rod installed on the end of the fixed seat, a movable seat slidably installed on the upper surface of the inner ring of the workbench in a ring array with the central axis of the workbench as the axis, a second positioning roller installed on the end of the movable seat, a fixed frame fixedly installed on the top of the movable seat, a pressure rod for pressing down a spiral aluminum alloy tube installed on the end of the fixed frame, a positioning plate for positioning the end of the spiral aluminum alloy tube slidably installed on the upper surface of the workbench, and a cutting assembly installed on the outer side of the workbench at a position corresponding to the positioning plate.

[0006] As a further preferred embodiment of the present technical solution, a first fixed block is symmetrically fixedly installed in a ring array on the upper surface of the workbench with the central axis of the workbench as the axis, a first sliding rod is slidably installed inside the first fixed block, one end of two of the first sliding rods is fixedly connected to one end of a moving seat, two ends of the first sliding rods away from the moving seat are fixedly installed with a first connecting block, a connecting rod is rotatably installed on the top of the first connecting block, a positioning motor is fixedly installed on the lower surface of the workbench, a disc is fixedly installed on the output end of the positioning motor through the workbench, and the end of the connecting rod away from the first connecting block is rotatably connected to the upper surface of the disc.

[0007] As a further preferred embodiment of the present technical solution, a second fixed block is symmetrically fixedly installed on the upper surface of the workbench corresponding to the position of the positioning plate, a second slide rod is slidably installed inside the second fixed block, and one end of two second slide rods is fixedly connected to the positioning plate.

[0008] As a further preferred embodiment of the present technical solution, a second connecting block is fixedly installed at one end of the two second sliding rods away from the positioning plate, an extrusion rod is fixedly connected to the middle part of the second connecting block, an extrusion bevel is opened at the outer ring position of the disc, and the extrusion bevel is in extrusion contact with the end of the extrusion rod.

[0009] As a further preferred embodiment of the present technical solution, a first rotating rod is rotatably installed in the middle of the workbench near the inner ring of the spiral aluminum alloy tube, and a rubber wheel is fixedly installed on the top of the first rotating rod, and the rubber wheel is in friction contact with the inner ring of the spiral aluminum alloy tube.

[0010] As a further preferred embodiment of the present technical solution, a rack is fixedly installed on one side of the movable seat near the rubber wheel, a first gear is fixedly installed on the bottom end of the first rotating rod, a second rotating rod is rotatably installed in the middle of the workbench near the first rotating rod, a second gear is fixedly installed in the middle of the second rotating rod, the second gear is meshingly connected to the rack, and the second gear is meshingly connected to the first gear.

[0011] As a further preferred embodiment of the present technical solution, a sliding hole is provided at the end of the fixing frame, the pressure rod is slidably installed inside the sliding hole, an extrusion spring is sleeved on the outer side of the top end of the pressure rod, one end of the extrusion spring is fixedly connected to the top of the pressure rod, and the other end of the extrusion spring is fixedly connected to the upper surface of the fixing frame.

[0012] As a further preferred embodiment of the present technical solution, a semicircular bead is fixedly installed on the upper surface of the workbench at a position corresponding to the position where the inner ring of the spiral aluminum alloy tube is placed.

[0013] As a further preferred embodiment of the present technical solution, the cutting assembly includes a hydraulic rod, a mounting seat, a cutting motor and a cutting disc knife. The hydraulic rod is fixedly installed on the outer side of the workbench at a position corresponding to the positioning plate, the mounting seat is fixedly installed on the movable end of the hydraulic rod, the cutting motor is fixedly installed on the top of the mounting seat, and the cutting disc knife is fixedly installed on the output end of the cutting motor.

[0014] The present invention provides a bicycle rim cutting machine, which has the following beneficial effects:

[0015] (1) The present invention places a spiral aluminum alloy tube between a first positioning roller and a second positioning roller on the upper surface of a workbench, squeezes and fixes the spiral aluminum alloy tube by the second positioning roller and the first positioning roller, and then controls the end of the spiral aluminum alloy tube to fit a positioning plate for positioning the rotation angle of the spiral aluminum alloy tube. The spiral aluminum alloy tube is cut by a cutting assembly to reduce the production of waste at the end of the spiral aluminum alloy tube and reduce production costs.

[0016] (2) The present invention controls the movement of the movable seat so that the fixed frame will move synchronously. The pressure rod at the end of the fixed frame squeezes the top of the spiral aluminum alloy tube, and the top of the spiral aluminum alloy tube squeezes the bottom of the pressure rod. The top position of the spiral aluminum alloy tube is fixed by the pressure rod. During the cutting process of the spiral aluminum alloy tube, the position of the spiral aluminum alloy tube can be fixed to prevent the spiral aluminum alloy tube from shaking, thereby achieving a smooth cutting position of the spiral aluminum alloy tube and improving the cutting quality of the spiral aluminum alloy tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the local structure of the present invention;

[0019] Figure 3 It is a schematic diagram of a partial cross-section explosion structure of the present invention;

[0020] Figure 4 for Figure 3 The enlarged view of point A in the middle;

[0021] Figure 5 It is a schematic diagram of the partial explosion structure of the present invention;

[0022] Figure 6 It is a schematic diagram of the local structure of the present invention;

[0023] In the figure: 1, base; 2, workbench; 3, fixed seat; 4, first positioning stick; 5, moving seat; 6, second positioning roller; 7, fixed frame; 8, pressure rod; 9, positioning plate; 10, cutting assembly; 11, first fixed block; 12, first slide bar; 13, first connecting block; 14, connecting rod; 15, positioning motor; 16, disc; 17, second fixed block; 18, second slide bar; 19, second connecting block; 20, extrusion rod; 21, extrusion chute; 22, first rotating rod; 23, rubber wheel; 24, rack; 25, first gear; 26, second rotating rod; 27, second gear; 28, slide hole; 29, extrusion spring; 30, semicircular ball; 31, hydraulic rod; 32, mounting seat; 33, cutting motor; 34, cutting disc knife. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0025] The present invention provides a technical solution: Figures 1 to 6As shown, in the present embodiment, a bicycle wheel rim cutting machine comprises a base 1, a workbench 2 is fixedly installed on the top of the base 1 by bolts, a fixed seat 3 is fixedly installed on the upper surface of the outer ring of the workbench 2 in a ring array with the central axis of the workbench 2 as the axis, a first positioning rod 4 is rotatably installed on the end of the fixed seat 3 through an axle pin, a movable seat 5 is slidably installed on the upper surface of the inner ring of the workbench 2 in a ring array with the central axis of the workbench 2 as the axis, a second positioning roller 6 is rotatably installed on the end of the movable seat 5 through an axle pin, a fixed frame 7 is fixedly installed on the top of the movable seat 5 by bolts, a pressure rod 8 for pressing down the spiral aluminum alloy tube is installed on the end of the fixed frame 7, a positioning plate 9 for positioning the end of the spiral aluminum alloy tube is slidably installed on the upper surface of the workbench 2, a cutting assembly 10 is installed on the outer side of the workbench 2 at a position corresponding to the positioning plate 9, and the spiral aluminum alloy tube is placed on the workbench 2. The spiral aluminum alloy tube is squeezed and fixed between the first positioning roller 4 and the second positioning roller 6 on the upper surface of the table 2, and then the end of the spiral aluminum alloy tube is controlled to fit the positioning plate 9, which is used to position the rotation angle of the spiral aluminum alloy tube. The spiral aluminum alloy tube is cut by the cutting assembly 10 to reduce the generation of waste at the end of the smaller spiral aluminum alloy tube and reduce production costs. When the movable seat 5 is controlled to move, the fixed frame 7 will move synchronously, and the pressure rod 8 at the end of the fixed frame 7 will squeeze the top of the spiral aluminum alloy tube, and the top of the spiral aluminum alloy tube will squeeze the bottom end of the pressure rod 8. The top position of the spiral aluminum alloy tube is fixed by the pressure rod 8. During the cutting process of the spiral aluminum alloy tube, the position of the spiral aluminum alloy tube can be fixed to prevent the spiral aluminum alloy tube from shaking, so as to achieve the flatness of the cutting position of the spiral aluminum alloy tube and improve the cutting quality of the spiral aluminum alloy tube.

[0026] like Figures 1 to 6 As shown, the upper surface of the workbench 2 is symmetrically fixedly installed with a first fixed block 11 in a ring array with the central axis of the workbench 2 as the axis, and a first slide rod 12 is slidably installed inside the first fixed block 11, one end of two of the first slide rods 12 is fixedly connected to one end of the moving seat 5, and one end of the two first slide rods 12 away from the moving seat 5 is fixedly installed with a first connecting block 13, and a connecting rod 14 is rotatably installed on the top of the first connecting block 13 through an axle pin, and a positioning motor 15 is fixedly installed on the lower surface of the workbench 2, and a disc 16 is fixedly installed on the output end of the positioning motor 15 through the workbench 2, and the end of the connecting rod 14 away from the first connecting block 13 is rotatably connected to the upper surface of the disc 16 through an axle pin.

[0027] The disc 16 is driven to rotate by the positioning motor 15, and the first connecting block 13 is pushed by the connecting rod 14 to drive the first sliding rod 12 to slide inside the first fixed block 11, which will drive the movable seat 5 to move toward the position of the fixed seat 3, and drive the second positioning roller 6 and the first positioning roller 4 to extrude and fix the spiral aluminum alloy tube.

[0028] like Figures 1 to 6 As shown, a second fixed block 17 is symmetrically fixedly installed on the upper surface of the workbench 2 corresponding to the position of the positioning plate 9, and a second slide rod 18 is slidably installed inside the second fixed block 17. One end of two second slide rods 18 is fixedly connected to the positioning plate 9, and one end of two second slide rods 18 away from the positioning plate 9 is fixedly installed with a second connecting block 19, and an extrusion rod 20 is fixedly connected to the middle part of the second connecting block 19. An extrusion bevel 21 is opened at the outer ring position of the disk 16, and the extrusion bevel 21 is in extrusion contact with the end of the extrusion rod 20.

[0029] During the rotation of the disc 16, the extrusion chute 21 on the disc 16 will squeeze the extrusion rod 20, which will drive the second slide bar 18 to slide inside the second fixed block 17, and the positioning plate 9 will move above the spiral aluminum alloy tube to position the end of the spiral aluminum alloy tube.

[0030] like Figures 1 to 6 As shown, a first rotating rod 22 is rotatably installed in the middle part of the workbench 2 near the inner ring of the spiral aluminum alloy tube, a rubber wheel 23 is fixedly installed on the top of the first rotating rod 22, the rubber wheel 23 is in friction contact with the inner ring of the spiral aluminum alloy tube, a rack 24 is fixedly installed on one side of the movable seat 5 near the rubber wheel 23, a first gear 25 is fixedly installed on the bottom end of the first rotating rod 22, a second rotating rod 26 is rotatably installed in the middle part of the workbench 2 near the first rotating rod 22, a second gear 27 is fixedly installed in the middle part of the second rotating rod 26, the second gear 27 is meshingly connected with the rack 24, and the second gear 27 is meshingly connected with the first gear 25.

[0031] In the process of moving the movable seat 5, the rack 24 on one side of the movable seat 5 will move synchronously, and the second gear 27 will be driven to rotate by the meshing of the second gear 27 and the rack 24, and the first rotating rod 22 will be driven to rotate by the meshing of the second gear 27 and the first gear 25, thereby controlling the rotation of the rubber wheel 23, and the friction between the rubber wheel 23 and the inner ring of the spiral aluminum alloy tube will be controlled to drive the spiral aluminum alloy tube to rotate between the second positioning roller 6 and the first positioning rod 4, so as to fit the end of the spiral aluminum alloy tube to the positioning plate 9.

[0032] like Figures 1 to 6As shown, a sliding hole 28 is opened at the end of the fixing frame 7, and the pressure rod 8 is slidably installed inside the sliding hole 28. An extrusion spring 29 is sleeved on the outer side of the top end of the pressure rod 8. One end of the extrusion spring 29 is fixedly connected to the top of the pressure rod 8, and the other end of the extrusion spring 29 is fixedly connected to the upper surface of the fixing frame 7.

[0033] When the movable seat 5 is controlled to move, the fixed frame 7 will move synchronously, and the pressure rod 8 at the end of the fixed frame 7 will squeeze the top of the spiral aluminum alloy tube, and the top of the spiral aluminum alloy tube will squeeze the bottom end of the pressure rod 8, driving the pressure rod 8 to slide inside the slide hole 28. At this time, the extrusion spring 29 is in an elongated state. When the pressure rod 8 moves to the topmost position of the spiral aluminum alloy tube, that is, the position where the second positioning roller 6 and the first positioning rod 4 squeeze and fix the spiral aluminum alloy tube, the pulling of the pressure rod 8 by the extrusion spring 29 will drive the bottom end of the pressure rod 8 to squeeze the topmost part of the spiral aluminum alloy tube, which is used to fix the position of the spiral aluminum alloy tube.

[0034] like Figures 1 to 6 As shown, a semicircular ball 30 is fixedly installed on the upper surface of the workbench 2 at a position corresponding to the position where the inner ring of the spiral aluminum alloy tube is placed.

[0035] Improve the smoothness of the spiral aluminum alloy tube rotating between the second positioning roller 6 and the first positioning roller 4.

[0036] like Figures 1 to 6 As shown, the cutting assembly 10 includes a hydraulic rod 31, a mounting seat 32, a cutting motor 33 and a cutting disc knife 34. The hydraulic rod 31 is fixedly installed at the position of the positioning plate 9 on the outer side of the workbench 2, the mounting seat 32 is fixedly installed at the movable end of the hydraulic rod 31, the cutting motor 33 is fixedly installed on the top of the mounting seat 32, and the cutting disc knife 34 is fixedly installed at the output end of the cutting motor 33.

[0037] The mounting seat 32 is driven to move by the hydraulic rod 31, and the cutting disc 34 is driven to rotate by the cutting motor 33, so that the moving and rotating cutting disc 34 can be driven to cut the spiral aluminum alloy tube.

[0038] The present invention provides a bicycle rim cutting machine, and the specific working principle is as follows:

[0039] When the device is in use, the spiral aluminum alloy tube is placed between the first positioning rod 4 and the second positioning roller 6 on the upper surface of the workbench 2, and the positioning motor 15 drives the disc 16 to rotate. The connecting rod 14 pushes the first connecting block 13 to drive the first slide bar 12 to slide inside the first fixed block 11, and drives the movable seat 5 to move to the position close to the fixed seat 3, and drives the second positioning roller 6 and the first positioning rod 4 to squeeze and fix the spiral aluminum alloy tube. During the rotation of the disc 16, the extrusion chute 21 on the disc 16 will squeeze the extrusion rod 20, and drive the second slide bar 18 to slide inside the second fixed block 17, and the positioning plate 9 will move to the top of the spiral aluminum alloy tube. At the same time, during the movement of the movable seat 5, the rack 24 on one side of the movable seat 5 will move synchronously, and through the second gear 27 The engagement with the rack 24 will drive the second gear 27 to rotate, and the engagement of the second gear 27 with the first gear 25 will drive the first rotating rod 22 to rotate, thereby controlling the rotation of the rubber wheel 23. The friction between the rubber wheel 23 and the inner ring of the spiral aluminum alloy tube will drive the spiral aluminum alloy tube to rotate between the second positioning roller 6 and the first positioning roller 4, which is used to fit the end of the spiral aluminum alloy tube to the positioning plate 9, to position the rotation angle of the spiral aluminum alloy tube, and to make the end of the spiral aluminum alloy tube slightly exceed the cutting disc 34, and then drive the mounting seat 32 to move through the hydraulic rod 31, and drive the cutting disc 34 to rotate through the cutting motor 33, which can drive the moving and rotating cutting disc 34 to cut the spiral aluminum alloy tube, which is used to produce smaller waste at the end of the spiral aluminum alloy tube and reduce production costs;

[0040] When the moving seat 5 is controlled to move, the fixed frame 7 will move synchronously, and the pressure rod 8 at the end of the fixed frame 7 will squeeze the top of the spiral aluminum alloy tube, and the top of the spiral aluminum alloy tube will squeeze the bottom end of the pressure rod 8, driving the pressure rod 8 to slide inside the sliding hole 28. At this time, the extrusion spring 29 is in an elongated state. When the pressure rod 8 moves to the topmost position of the spiral aluminum alloy tube, that is, the position where the second positioning roller 6 and the first positioning roller 4 squeeze and fix the spiral aluminum alloy tube, the pulling of the pressure rod 8 by the extrusion spring 29 will drive the bottom end of the pressure rod 8 to squeeze the topmost part of the spiral aluminum alloy tube, which is used to fix the position of the spiral aluminum alloy tube. During the cutting process of the spiral aluminum alloy tube, the position of the spiral aluminum alloy tube can be fixed to prevent the spiral aluminum alloy tube from shaking, thereby achieving the flatness of the cutting position of the spiral aluminum alloy tube and improving the cutting quality of the spiral aluminum alloy tube.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bicycle wheel rim cutting machine, comprising a base (1), a workbench (2) fixedly mounted on the top of the base (1), a fixing seat (3) fixedly mounted in an annular array on the upper surface of the outer ring of the workbench (2) with the central axis of the workbench (2) as the axis, a first positioning rod (4) mounted on the end of the fixing seat (3), characterized in that: A movable seat (5) is slidably mounted on the upper surface of the inner ring of the workbench (2) in a circular array with the central axis of the workbench (2) as the axis, a second positioning roller (6) is mounted on the end of the movable seat (5), a fixed frame (7) is fixedly mounted on the top of the movable seat (5), a pressure rod (8) for pressing down the spiral aluminum alloy tube is mounted on the end of the fixed frame (7), a positioning plate (9) for positioning the end of the spiral aluminum alloy tube is slidably mounted on the upper surface of the workbench (2), and a cutting assembly (10) is mounted on the outer side of the workbench (2) at a position corresponding to the positioning plate (9).

2. A bicycle rim cutting machine according to claim 1, characterized in that: The upper surface of the workbench (2) is symmetrically and annularly arrayed with a first fixed block (11) around the central axis of the workbench (2); a first sliding rod (12) is slidably installed inside the first fixed block (11); one end of two of the first sliding rods (12) is fixedly connected to one end of the moving seat (5); one end of the two of the first sliding rods (12) away from the moving seat (5) is fixedly installed with a first connecting block (13); a connecting rod (14) is rotatably installed on the top of the first connecting block (13); a positioning motor (15) is fixedly installed on the lower surface of the workbench (2); a disc (16) is fixedly installed on the output end of the positioning motor (15) through the workbench (2); and one end of the connecting rod (14) away from the first connecting block (13) is rotatably connected to the upper surface of the disc (16).

3. A bicycle rim cutting machine according to claim 2, characterized in that: A second fixed block (17) is symmetrically fixedly installed on the upper surface of the workbench (2) at a position corresponding to the positioning plate (9), and a second sliding rod (18) is slidably installed inside the second fixed block (17), and one end of the two second sliding rods (18) is fixedly connected to the positioning plate (9).

4. A bicycle rim cutting machine according to claim 3, characterized in that: A second connecting block (19) is fixedly mounted on one end of the two second sliding rods (18) away from the positioning plate (9), and an extrusion rod (20) is fixedly connected to the middle of the second connecting block (19). An extrusion inclined groove (21) is provided at the outer ring position of the disk (16), and the extrusion inclined groove (21) is in extrusion contact with the end of the extrusion rod (20).

5. A bicycle rim cutting machine according to claim 3, characterized in that: A first rotating rod (22) is rotatably mounted in the middle of the workbench (2) near the inner ring of the spiral aluminum alloy tube, and a rubber wheel (23) is fixedly mounted on the top of the first rotating rod (22), and the rubber wheel (23) is in frictional contact with the inner ring of the spiral aluminum alloy tube.

6. A bicycle rim cutting machine according to claim 5, characterized in that: A rack (24) is fixedly mounted on one side of the movable seat (5) near the rubber wheel (23); a first gear (25) is fixedly mounted on the bottom end of the first rotating rod (22); a second rotating rod (26) is rotatably mounted in the middle of the workbench (2) near the first rotating rod (22); a second gear (27) is fixedly mounted in the middle of the second rotating rod (26); the second gear (27) is meshedly connected to the rack (24); and the second gear (27) is meshedly connected to the first gear (25).

7. A bicycle rim cutting machine according to claim 1, characterized in that: A sliding hole (28) is provided at the end of the fixing frame (7), and the pressure rod (8) is slidably installed inside the sliding hole (28). An extrusion spring (29) is sleeved on the outer side of the top end of the pressure rod (8), one end of the extrusion spring (29) is fixedly connected to the top of the pressure rod (8), and the other end of the extrusion spring (29) is fixedly connected to the upper surface of the fixing frame (7).

8. A bicycle rim cutting machine according to claim 5, characterized in that: A semicircular bead (30) is fixedly mounted on the upper surface of the workbench (2) at a position corresponding to the position where the inner ring of the spiral aluminum alloy tube is placed.

9. A bicycle rim cutting machine according to claim 1, characterized in that: The cutting assembly (10) comprises a hydraulic rod (31), a mounting seat (32), a cutting motor (33) and a cutting disc knife (34); the hydraulic rod (31) is fixedly mounted on the outer side of the workbench (2) at a position corresponding to the positioning plate (9); the mounting seat (32) is fixedly mounted on the movable end of the hydraulic rod (31); the cutting motor (33) is fixedly mounted on the top of the mounting seat (32); and the cutting disc knife (34) is fixedly mounted on the output end of the cutting motor (33).

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