Knife grinding device of silage harvester

Abstract

The utility model discloses a cutter grinding device of a silage harvester, and belongs to the technical field of harvesters. Comprising a rack, the rack is provided with a reciprocating driving mechanism and a sharpening feeding mechanism, the reciprocating driving mechanism is connected with the sharpening feeding mechanism to drive the sharpening feeding mechanism to do reciprocating motion, the sharpening feeding mechanism comprises a sleeve, a ratchet wheel, a spring piece, a reinforcing sleeve, a sharpening stone, a threaded sleeve and an impact plate, and the sleeve is connected with an inner thread of the threaded sleeve through an outer thread. The middle of the reinforcing sleeve is fixedly connected with the outer side of the threaded sleeve, the two ends of the reinforcing sleeve are connected with the reciprocating driving mechanism, the spring piece is fixed to the reinforcing sleeve and meshed with a pawl of the ratchet wheel, the upper end of the knife stone is fixedly connected with the interior of the sleeve, and the impact plate is fixedly arranged on one side of the rack. The automatic feeding and sharpening device realizes automatic feeding and sharpening, not only can accurately control the sharpening amount, but also is simple in structure and saves space.

Description

Technical Field

[0001] The utility model belongs to a harvester component, in particular to a knife sharpening device for a silage harvester. Background Art

[0002] The green fodder planting area in my country has increased year by year, and the demand for silage machines has increased dramatically. Silage machines are agricultural machinery equipment used to harvest silage crops. During the harvesting process, the cutter in the silage machine will complete the shredding function of the silage crops. After working for a long time, the cutter needs to be sharpened to continue to realize the shredding function. At present, domestic silage machines started late, the sharpening technology is not mature enough, the control and related procedures involved are relatively complex, and the mechanical device occupies a large space; in addition, when the grindstone of the silage machine is worn too much, it is necessary to manually adjust the extension length of the grindstone to reset it in order to continue to realize automatic sharpening. When the existing silage machine sharpening device resets the grindstone, the grindstone needs to be disassembled and reinstalled to the working position, which is cumbersome and inefficient. Therefore, the prior art needs an automatic sharpening device that is relatively stable and practical, saves space, and has a simple and convenient operation for resetting the grindstone. Utility Model Content

[0003] The utility model aims to provide a knife sharpening device for a silage harvester, so as to overcome the defects of the knife sharpening device for a silage harvester in the prior art, that the control system is relatively complex and the mechanical structure occupies a large space.

[0004] The utility model is realized by adopting the following technical solutions:

[0005] A knife sharpening device for a silage harvester comprises a frame, on which a reciprocating drive mechanism and a knife sharpening feed mechanism are provided, the reciprocating drive mechanism is connected to the knife sharpening feed mechanism to drive the knife sharpening feed mechanism to perform reciprocating motion, the knife sharpening feed mechanism comprises a sleeve, a ratchet, a spring sheet, a reinforcing sleeve, a whetstone, a threaded sleeve and an impact plate, the sleeve is connected to an internal thread of the threaded sleeve via an external thread, the ratchet is fixedly arranged on the periphery of the sleeve, the middle of the reinforcing sleeve is fixedly connected to the outer side of the threaded sleeve, and both ends are connected to the reciprocating drive mechanism, the spring sheet is fixed to the reinforcing sleeve and engages with a pawl of the ratchet, the upper end of the whetstone is fixedly connected to the inside of the sleeve, and the impact plate is fixedly arranged on one side of the frame.

[0006] Preferably, a top plate is fixedly provided above the sleeve, a nut is fixedly provided in the middle of the top plate, a reset bolt is threadedly connected to the nut, and the bottom of the reset bolt passes through the top plate and is fixedly connected to the grindstone.

[0007] Preferably, the reciprocating drive mechanism comprises a two-way piston cylinder, a left sprocket, a left chain, a right sprocket, a right chain, a chain fixing seat, a light bar, a sliding sleeve, a guide rail, a skateboard and a pulley, the piston rods on both sides of the two-way piston cylinder are fixed on both sides of the frame, the left sprocket and the right sprocket are symmetrically installed on both sides of the cylinder body of the two-way piston cylinder, the chain fixing seat is fixedly arranged in the middle position of the frame, both ends of the light bar and the guide rail are installed on both sides of the frame and are arranged in parallel, the sliding sleeve is movably connected to the light bar, the skateboard is movably connected to the guide rail through the pulley, the two ends of the reinforcement sleeve are fixedly connected to the skateboard and the sliding sleeve respectively, one end of the left chain is fixed to the chain fixing seat, and the other end bypasses the left sprocket and is connected to the connecting block on the sliding sleeve, one end of the right chain is fixed to the chain fixing seat, and the other end bypasses the right sprocket and is connected to the connecting block on the sliding sleeve.

[0008] Preferably, pressure sensing devices are respectively provided at both ends of the bidirectional piston cylinder.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] (1) The utility model drives the grinding feed device to move by horizontal movement of the reciprocating drive mechanism. When the grinding feed device moves to the right, the ratchet wheel collides with the impact plate, causing the ratchet wheel to rotate one unit of ratchet pawl clockwise, causing the grindstone to descend, thereby realizing automatic feeding and grinding. Not only can the grinding amount be accurately controlled, but the structure is simple and space-saving.

[0011] (2) The whetstone of the utility model is fixed inside the sleeve by a bolt connected to the nut thread. When the whetstone is worn too much, the bolt can be manually adjusted to reset the whetstone. After the sharpening is completed, the whetstone can be retracted into the sleeve. The operation is simple and convenient, and the space used by the mechanical device can be reduced.

[0012] (3) The utility model uses a bidirectional piston cylinder as the driving power, and through the left sprocket and the right sprocket symmetrically arranged on the cylinder body, the moving distance of the chain moving end is twice the moving distance of the moving cylinder body. This structure greatly reduces the axial length of the hydraulic cylinder, the structure is simpler, and the space occupied is small. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram I of the utility model.

[0014] Figure 2 This is a three-dimensional structural schematic diagram II of the utility model.

[0015] Figure 3 It is a structural schematic diagram of the reciprocating drive mechanism of the utility model.

[0016] Figure 4 It is a structural schematic diagram of the knife sharpening feeding mechanism of the utility model.

[0017] In the figure: 1, frame; 2, smooth bar; 3, two-way piston cylinder; 4, left sprocket; 5, guide rail; 6, chain fixing seat; 7, right sprocket; 8, sliding sleeve; 9, sleeve; 10, impact plate; 11, ratchet; 12, slide plate; 13, pulley; 14, spring sheet; 15, reinforcement sleeve; 16, connecting block; 17, left chain; 18, right chain; 19, grindstone; 20, threaded sleeve; 21, reset bolt; 22, nut. DETAILED DESCRIPTION

[0018] The utility model will be further described below in conjunction with the accompanying drawings.

[0019] like Figure 1 , Figure 2 As shown, a knife sharpening device for a silage harvester includes a frame 1, on which a reciprocating drive mechanism and a knife sharpening feed mechanism are provided. The reciprocating drive mechanism is connected to the knife sharpening feed mechanism to drive the knife sharpening feed mechanism to perform reciprocating motion. The knife sharpening feed mechanism automatically sharpens the cutter in the silage harvester during the reciprocating motion.

[0020] like Figure 1 , Figure 2 , Figure 4 As shown, the sharpening feed mechanism includes a sleeve 9, a ratchet 11, a spring sheet 14, a reinforcing sleeve 15, a whetstone 19, a threaded sleeve 20 and an impact plate 10. The sleeve 9 is connected to the internal thread of the threaded sleeve 20 through an external thread. The ratchet 11 is fixedly arranged on the periphery of the sleeve 9. The middle of the reinforcing sleeve 15 is fixedly connected to the outer side of the threaded sleeve 20, and the two sides are connected to the reciprocating drive mechanism. The spring sheet 14 is fixed on the reinforcing sleeve 15 and engages with the pawl of the ratchet 11. The spring sheet 14 is used to fix the ratchet 11 to prevent the ratchet 11 from rotating. The upper end of the whetstone 19 is fixedly connected to the inside of the sleeve 9, and the impact plate 10 is fixedly arranged on one side of the frame 1.

[0021] As a preferred embodiment, Figure 4 As shown, a top plate is fixedly provided above the sleeve 9, a nut 22 is fixedly provided in the middle of the top plate, a reset bolt 21 is threadedly connected to the nut 22, and the bottom of the bolt passes through the top plate and is fixedly connected to the whetstone 19. When the whetstone 19 is worn too much, the reset bolt 21 can be manually adjusted to increase the length of the whetstone 19 extending out of the sleeve 9, so as to reset the whetstone 19. After the sharpening is completed, the whetstone 19 can also be retracted into the sleeve 9. The adjustment operation is simple and convenient, and the space used for the mechanical device is reduced.

[0022] As a preferred embodiment, Figure 1 , Figure 2 , Figure 3As shown, the reciprocating drive mechanism includes a bidirectional piston cylinder 3, a left sprocket 4, a left chain 17, a right sprocket 7, a right chain 18, a chain fixing seat 6, a light bar 2, a sliding sleeve 8, a guide rail 5, a slide plate 12 and a pulley 13. The piston rods on both sides of the bidirectional piston cylinder 3 are fixed on both sides of the frame 1. The left sprocket 4 and the right sprocket 7 are symmetrically installed on both sides of the cylinder body of the bidirectional piston cylinder 3. The chain fixing seat 6 is fixed in the middle position of the frame 1. The two ends of the light bar 2 and the square guide rail 5 are fixedly installed on both sides of the frame 1 and are arranged in parallel. The sliding sleeve 8 It is movably connected to the circular light bar 2, and the skateboard 12 is movably connected to the square guide rail 5 through a pulley 13. The pulley 13 is set on the contact plane between the guide rail 5 and the skateboard 12 to ensure smooth horizontal movement of the device. The skateboard 12 and the sliding sleeve 8 are respectively fixedly connected to the two ends of the reinforcement sleeve 15. One end of the left chain 17 is fixed on the chain fixing seat 6, and the other end bypasses the left sprocket 4 and is connected to the connecting block 16 on the sliding sleeve 8. One end of the right chain 18 is fixed on the chain fixing seat 6, and the other end bypasses the right sprocket 7 and is connected to the connecting block 16 on the sliding sleeve 8.

[0023] As a preferred embodiment, pressure sensing devices are respectively provided at both ends of the bidirectional piston cylinder 3. When the sharpening feeding device moves horizontally to a certain position, the pressure sensing device controls the bidirectional piston cylinder 3 to change the movement direction through the sensing signal to realize horizontal reciprocating motion.

[0024] The working principle of the utility model is as follows: when working, the device provides power through the two-way piston cylinder 3 to drive the left chain 17 and the right chain 18 to move on the left sprocket 4 and the right sprocket 7. Driven by the left chain 17 and the right chain 18, the knife sharpening feeding mechanism moves horizontally along the light bar 2 and the guide rail 5 through the sliding sleeve 8 and the sliding plate 12. When the knife sharpening feeding device moves horizontally to a certain position on the left or right side, the pressure sensing device controls the two-way piston cylinder 3 to change the movement direction through the sensing signal to realize horizontal reciprocating motion. The knife sharpening feeding mechanism uses the spring sheet 14 to engage with the ratchet 11 to prevent the ratchet 11 from rotating. During the rightward movement of the knife sharpening feeding device, the ratchet 11 collides with the impact plate 10, so that the ratchet 11 moves one unit ratchet pawl clockwise. The ratchet 11 drives the sleeve 9 to rotate and descend in the threaded sleeve 20, thereby driving the whetstone 19 on the sleeve 9 to descend, realizing automatic feeding of the whetstone 19, thereby realizing automatic sharpening of the movable knife in the shredding device below the knife sharpening device.

Claims

1. A blade sharpening device for a silage harvester, comprising a frame (1), characterized in that: The frame (1) is provided with a reciprocating drive mechanism and a sharpening feed mechanism. The reciprocating drive mechanism is connected to the sharpening feed mechanism to drive the sharpening feed mechanism to perform reciprocating motion. The sharpening feed mechanism comprises a sleeve (9), a ratchet (11), a spring sheet (14), a reinforcing sleeve (15), a sharpening stone (19), a threaded sleeve (20) and an impact plate (10). The sleeve (9) is connected to the threaded sleeve (20) through an external thread. The ratchet (11) is fixedly arranged on the outer periphery of the sleeve (9). The middle of the reinforcing sleeve (15) is fixedly connected to the outer side of the threaded sleeve (20) and the two ends are connected to the reciprocating drive mechanism. The spring sheet (14) is fixed on the reinforcing sleeve (15) and engages with a pawl of the ratchet (11). The upper end of the sharpening stone (19) is fixedly connected to the inside of the sleeve (9). The impact plate (10) is fixedly arranged on one side of the frame (1).

2. The silage harvester knife sharpening device according to claim 1, characterized in that: A top plate is fixedly provided above the sleeve (9), a nut (22) is fixedly provided in the middle of the top plate, a reset bolt (21) is threadedly connected to the nut (22), and the bottom of the reset bolt (21) passes through the top plate and is fixedly connected to the grindstone (19).

3. The silage harvester knife sharpening device according to claim 2, characterized in that: The reciprocating drive mechanism comprises a bidirectional piston cylinder (3), a left sprocket (4), a left chain (17), a right sprocket (7), a right chain (18), a chain fixing seat (6), a light bar (2), a sliding sleeve (8), a guide rail (5), a slide plate (12) and a pulley (13); piston rods on both sides of the bidirectional piston cylinder (3) are fixed to both sides of a frame (1); the left sprocket (4) and the right sprocket (7) are symmetrically mounted on both sides of a cylinder body of the bidirectional piston cylinder (3); the chain fixing seat (6) is fixedly arranged at a middle position of the frame (1); and both ends of the light bar (2) and the guide rail (5) are mounted on the frame (1). The two ends of the reinforcing sleeve (15) are fixedly connected to the slide plate (12) and the slide plate (8) respectively; one end of the left chain (17) is fixed to the chain fixing seat (6) and the other end of the left chain (17) is connected to the connecting block (16) on the slide plate (8) by passing through the left sprocket (4); and one end of the right chain (18) is fixed to the chain fixing seat (6) and the other end of the right chain (18) is connected to the connecting block (16) on the slide plate (8) by passing through the right sprocket (7).

4. The silage harvester knife sharpening device according to claim 3, characterized in that: Pressure sensing devices are respectively provided at both ends of the bidirectional piston cylinder (3).

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