Semi-automatic lifting device with adjustable stubble cutting height

Abstract

The utility model discloses a semi-automatic lifting device with adjustable stubble cutting height, and belongs to the technical field of agricultural machinery matching devices. Comprising a pulley block device, a short connecting plate and a long connecting plate, the pulley block device comprises an upper fixing plate, an upper fixed pulley, a pull rope, a ratchet type tensioner, a lower fixing plate and a lower fixed pulley, the upper fixed pulley is installed on the upper fixing plate, the lower fixed pulley and the ratchet type tensioner are installed on the lower fixing plate, one end of the pull rope is connected with the upper fixing plate, and the other end of the pull rope is connected with the long connecting plate. And the other end of the lower fixing plate bypasses the upper fixed pulley and the lower fixed pulley to be connected with the ratchet type tensioner, the lower fixing plate is fixedly connected with the short connecting plate, and the short connecting plate can be detachably connected with the long connecting plate at different height positions. The header lifting device can safely and reliably achieve lifting of the header, then the purpose of adjusting the stubble cutting height is achieved, lifting of the header can be completed only by one person in the operation process, manpower consumption is reduced, and time used for adjusting the height of the header is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery supporting devices, in particular to a semi-automatic lifting device with adjustable cutting height. Background Art

[0002] The semi-automatic lifting device with adjustable stubble height is also called the header lifting mechanism, which is specially used for walk-behind reapers, reaper balers and stubble levelers. In actual use, the semi-automatic lifting device with adjustable stubble height is usually welded between the frame and the header. The header is raised and lowered according to the required stubble height through manual or hydraulic systems to adjust the header height. The header lifting mechanism of agricultural machinery currently on the market has a complex structure, and the operation process of adjusting the header height is very cumbersome. The header lifting is inconvenient, time-consuming and laborious. The operator works hard and consumes a lot of physical energy, resulting in a slow lifting speed of the header, cumbersome lifting steps and low work efficiency. Utility Model Content

[0003] The utility model aims to provide a semi-automatic lifting device with adjustable cutting height, so as to overcome the defects in the prior art that the lifting mechanism of the cutting platform is complex in structure and the operation process of adjusting the height of the cutting platform is very cumbersome.

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

[0005] A semi-automatic lifting device with adjustable stubble height comprises a pulley block device, a connecting short plate and a connecting long plate, the pulley block device comprises an upper fixed plate, an upper fixed pulley, a pull rope, a ratchet tensioner, a lower fixed plate and a lower fixed pulley, the upper fixed pulley is installed on the upper fixed plate, the lower fixed pulley and the ratchet tensioner are installed on the lower fixed plate, one end of the pull rope is connected to the upper fixed plate, and the other end passes through the upper fixed pulley and the lower fixed pulley respectively and is connected to the ratchet tensioner, the lower fixed plate is fixedly connected to the connecting short plate, and the connecting short plate can be detachably connected to the connecting long plate at different heights.

[0006] Furthermore, the connecting short plate is provided with a plurality of fixing bolt holes, the connecting long plate is provided with adjusting bolt holes whose number is greater than the fixing bolt holes, and the connecting short plate is detachably connected to the connecting long plate by fixing bolts passing through the fixing bolt holes and the adjusting bolt holes.

[0007] Furthermore, the pulley assembly device also includes a universal rotating ring, which is installed on the left end of the upper fixed plate and connected to the pull rope.

[0008] Furthermore, mounting slots are provided on both sides of the connecting short plate, V-shaped rollers are installed on the mounting slots, V-shaped tracks are provided on both sides of the connecting long plate, and the V-shaped rollers are movably connected to the V-shaped tracks.

[0009] Furthermore, upper limit bolt holes and lower limit bolt holes are provided at the upper and lower parts of the two sides of the connecting long plate.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The utility model discloses a kind of utility model discloses the utility model discloses a kind of ... BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is the front view of the utility model.

[0013] Figure 2 It is a right view of the utility model.

[0014] Figure 3 It is a structural schematic diagram of the pulley block device in the utility model.

[0015] Figure 4 It is a structural schematic diagram of connecting short plates in the utility model.

[0016] Figure 5 This is a schematic diagram of the structure of the long board connected in the utility model.

[0017] In the figure: 1. Upper fixed plate; 2. Upper fixed pulley; 3. Pull rope; 4. Ratchet tensioner; 5. Lower fixed plate; 6. Connecting short plate; 7. Connecting long plate; 8. Adjusting bolt hole; 9. Fixing bolt; 10. V-shaped roller; 11. Lower fixed pulley; 12. V-shaped track; 13. Universal swivel eye; 14. Upper pulley bearing; 15. Upper limit bolt hole; 16. Lower limit bolt hole; 17. Lower pulley bearing; 18. Mounting slot hole; 19. Fixing bolt hole. 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, the semi-automatic lifting device with adjustable cutting height described in the utility model includes a pulley block device, a connecting short plate 6 and a connecting long plate 7.

[0020] like Figure 3 As shown, the pulley block device includes an upper fixed plate 1, an upper fixed pulley 2, a pull rope 3, a ratchet tensioner 4, a lower fixed plate 5, and a lower fixed pulley 11. Two upper fixed pulleys 2 are installed on the upper fixed plate 1, and two lower fixed pulleys 11 and a ratchet tensioner 4 are installed on the lower fixed plate 5. The upper fixed pulley 2 and the lower fixed pulley 11 are connected to the upper fixed plate 1 and the lower fixed plate 5 through an upper pulley bearing 14 and a lower pulley bearing 17, respectively, and are staggered. The pull rope 3 is a steel wire rope, one end of which is connected to the upper fixed plate 1, and the other end is passed around the upper fixed pulley 2 and the lower fixed pulley. The pulley 11 is connected to the ratchet tensioner 4, and the lower fixed plate 5 is fixedly welded to the connecting short plate 6. The connecting short plate 6 can be detachably connected to the connecting long plate 7 at different heights. When in use, the upper fixed plate 1 is welded to the connecting plate of the cutting table and the frame of the driving part of the agricultural machinery. The ratchet tensioner 4 prevents the pull rope 3 from reversing during the process of adjusting the height of the cutting table. The ratchet tensioner 4 is installed on the rightmost side of the lower fixed plate 5 and is connected to one end of the pull rope 3, and locks the pull rope 3 when the required height is reached to facilitate subsequent operations.

[0021] Further, such as Figure 4 , Figure 5 As shown, four fixing bolt holes 19 are designed on the connecting short plate 6, and 14 adjusting bolt holes 8 for realizing height adjustment are designed on the connecting long plate 7. The connecting short plate 6 is detachably connected to the connecting long plate 7 by fixing bolts 9 passing through the adjusting bolt holes 8 and the fixing bolt holes 19. When in use, the connecting short plate 6 is connected to the cutting table, and the connecting long plate 7 is fixed on the frame of the driving part of the agricultural machinery.

[0022] Further, such as Figure 3 As shown, this embodiment also includes a universal rotating lifting ring 13, which is installed on the left end of the upper fixed plate 1 and connected to the pull rope 3. The universal rotating lifting ring 13 can realize the free rotation of the lifting point, thereby effectively reducing the problems of rope or chain entanglement and twisting generated during the lifting and lowering of the cutting platform, and ensuring that the connecting short plate 6 is stably suspended in the air.

[0023] Further, such as Figure 1 , Figure 2 , Figure 4 , Figure 5 As shown, the connecting short plate 6 is further provided with four mounting slots 18, and a V-shaped roller 10 is respectively installed in the four mounting slots 18 to fix the V-shaped roller 10. V-shaped tracks 12 are provided on both sides of the connecting long plate 7, and the V-shaped roller 10 is movably connected with the V-shaped track 12. The design of the V-shaped roller 10 and the V-shaped track 12 can effectively guide the movement of the connecting short plate 6 during its up and down movement, reduce lateral displacement, increase support and extend service life, and at the same time have multiple functions such as reducing noise and vibration, improving safety and reducing friction.

[0024] Further, such as Figure 5 As shown, upper and lower portions of both sides of the connecting long plate 7 are provided with upper limit bolt holes 15 and lower limit bolt holes 16, and limit bolts can be installed in the upper limit bolt holes 15 and the lower limit bolt holes 16 to prevent the V-shaped roller 10 from detaching from the connecting long plate 7 when rolling, causing the cutting platform to collide with the ground and thus damage the cutting platform.

[0025] When the utility model is in use, first remove the four fixing bolts 9 that fix the long connecting plate 7 and the connecting short plate 6, then adjust the ratchet tensioner 4 in the pulley block device, and pull the pull rope 3 through the ratchet tensioner 4 to make the connecting short plate 6 move up and down, thereby realizing the lifting and lowering of the cutting platform. At this time, the V-shaped rollers 10 installed on both sides of the connecting short plate 6 move along the V-shaped track 12. The ratchet tensioner 4 locks the pull rope 3 after completing the tightening action to prevent the pull rope 3 from reversing. The design of the V-shaped roller 10 and the V-shaped track 12 can guide the connecting short plate 6 to move along a specific path, and can ensure that the direction and position are kept stable during the transportation process. When the cutting platform is adjusted to a suitable height, the connecting adjustment bolt hole 8 and the fixing bolt hole 19 are adjusted to align at the same time. After confirming the position, the four fixing bolts are installed in the aligned adjustment bolt hole 8 and the fixing bolt hole 19 to realize the fixation of the connecting long plate 7 and the connecting short plate 6, thereby realizing the adjustment of the height of the cutting platform.

[0026] The utility model has a reasonable design and structure, can safely and reliably realize the lifting and lowering of the cutting table, thereby achieves the purpose of adjusting the cutting height and realizes the requirements of different cutting heights, and only one person is needed to complete the lifting and lowering of the cutting table during the operation, and the lifting and lowering are stable and will not deflect, which reduces the consumption of manpower and saves the time used for adjusting the height of the cutting table, improves the efficiency of realizing the lifting and lowering of the cutting table, and reduces the cost consumed by the lifting and lowering of the cutting table.

Claims

1. A semi-automatic lifting device with adjustable cutting height, characterized in that: The invention comprises a pulley block device, a connecting short plate (6) and a connecting long plate (7), wherein the pulley block device comprises an upper fixed plate (1), an upper fixed pulley (2), a pull rope (3), a ratchet tensioner (4), a lower fixed plate (5) and a lower fixed pulley (11); the upper fixed pulley (2) is mounted on the upper fixed plate (1), the lower fixed pulley (11) and the ratchet tensioner (4) are mounted on the lower fixed plate (5); one end of the pull rope (3) is connected to the upper fixed plate (1), and the other end of the pull rope (3) is connected to the ratchet tensioner (4) by passing through the upper fixed pulley (2) and the lower fixed pulley (11); the lower fixed plate (5) is fixedly connected to the connecting short plate (6), and the connecting short plate (6) can be detachably connected to the connecting long plate (7) at different heights.

2. A semi-automatic lifting device with adjustable cutting height according to claim 1, characterized in that: The connecting short plate (6) is provided with a plurality of fixing bolt holes (19), the connecting long plate (7) is provided with adjusting bolt holes (8) whose number is greater than the fixing bolt holes (19), and the connecting short plate (6) is detachably connected to the connecting long plate (7) via fixing bolts (9) passing through the fixing bolt holes (19) and the adjusting bolt holes (8).

3. The semi-automatic lifting device with adjustable cutting height according to claim 1, characterized in that: The pulley block device further comprises a universal rotating lifting ring (13), which is mounted on the left end of the upper fixing plate (1) and is connected to the pull rope (3).

4. The semi-automatic lifting device with adjustable cutting height according to claim 1, characterized in that: The connecting short plate (6) is provided with mounting slots (18) on both sides, and V-shaped rollers (10) are installed on the mounting slots (18). The connecting long plate (7) is provided with V-shaped tracks (12) on both sides, and the V-shaped rollers (10) are movably connected to the V-shaped tracks (12).

5. The semi-automatic lifting device with adjustable cutting height according to claim 4, characterized in that: Upper and lower portions of both sides of the connecting long plate (7) are provided with upper limit bolt holes (15) and lower limit bolt holes (16).

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