Lifting device of harvester

Abstract

The utility model relates to the technical field of harvester lifting devices, and discloses a harvester lifting device which comprises an outer shell, a fixing support is fixedly assembled on the outer wall of the outer shell, the inner wall of the fixing support is in threaded connection with a limiting screw rod, a limiting block is arranged at the top of the limiting screw rod, and the limiting block is in threaded connection with the fixing support. A movable support is arranged in an inner cavity of the fixed support, a clamping groove penetrates through an inner cavity of the movable support, a rotating shaft is installed on the inner wall of the movable support, and a vertical plate is arranged in an inner cavity of the outer shell. According to the chain tightening device, a tightening bolt is rotated reversely, so that the tightening bolt drives a cross rod, a connecting column and a movable support to move, the movable support drives a rotating shaft and a fluted disc to move, and the lengths of the two chains are ensured to be the same while the chains are tightened; therefore, the problems that chains on an existing harvester lifting device need to be adjusted synchronously during maintenance, the tightness of the two chains is different when the chains are not adjusted synchronously, and the service life of the chains is short are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of harvester lifting devices, in particular to a harvester lifting device. Background Art

[0002] A harvester is an integrated machine for harvesting crops. It completes harvesting and threshing at one time, and concentrates the grains in a storage bin. The grains are then transported to a transport vehicle via a conveyor belt. Manual harvesting can also be done by spreading the stalks of crops such as rice and wheat in the fields, and then using grain harvesting machinery to pick up and thresh them.

[0003] The rotating shaft on the existing harvester lifting device needs to be tightened during maintenance. There are two conveyor chains on the rotating shaft, and the tension adjustment structure is located on both sides of the outer shell. It needs to be adjusted synchronously during maintenance. If the synchronous adjustment is not performed, the tightness of the two chains will be different, which will result in a short service life of the chain. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention provides a harvester lifting device having the advantages of stable chain adjustment and short disassembly and installation time, thereby solving the problems raised by the above-mentioned background technology.

[0005] The utility model provides the following technical solutions: a harvester lifting device, comprising an outer shell, an outer wall of the outer shell is fixedly equipped with a fixed bracket, an inner wall of the fixed bracket is threadedly connected to a limiting screw, a limiting block is provided on the top of the limiting screw, an inner cavity of the fixed bracket is provided with a movable bracket, the inner cavity of the movable bracket is penetrated by a card slot, a rotating shaft is installed on the inner wall of the movable bracket, the inner cavity of the outer shell is provided with a vertical plate, the inner wall of the vertical plate is rotatably connected with a tensioning bolt, an outer edge of the movable bracket is fixedly equipped with a connecting column, an end of the connecting column away from the movable bracket is fixedly equipped with a cross bar, and the cross bar is threadedly connected to the tensioning bolt.

[0006] As a preferred technical solution of the present invention, a gear disc is fixedly sleeved on the inner wall of the rotating shaft, the vertical plate is located at the front end of the gear disc, and a blocking piece is installed on the outer edge of the fixed bracket.

[0007] As a preferred technical solution of the present invention, there are a plurality of card slots, and the card slots are evenly distributed.

[0008] As a preferred technical solution of the present invention, a vertical slot is provided in the inner cavity of the fixing bracket, the limiting block is slidably connected to the vertical slot, and a positioning slot is provided on the left side of the vertical slot.

[0009] As a preferred technical solution of the present invention, a sliding groove is provided on the outer wall of the outer shell, and a slider is fixedly mounted on the outer edge of the movable bracket, and the slider is slidably connected to the sliding groove.

[0010] As a preferred technical solution of the present invention, a shift groove is provided on the outer wall of the outer shell, and the cross bar is slidably connected to the shift groove.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The harvester lifting device reverses a tensioning bolt so that the tensioning bolt drives the cross bar, the connecting column and the movable bracket to move, and the movable bracket drives the rotating shaft and the gear plate to move, so that the chain is tightened while ensuring that the lengths of the two chains are the same, thereby solving the problem that the chains on the existing harvester lifting device need to be adjusted synchronously during maintenance. If the synchronous adjustment is not performed, the tightness of the two chains will be different, resulting in a short service life of the chains.

[0013] 2. The harvester lifting device uses a limit block in conjunction with a card slot. When fixing, the limit block is inserted into the card slot to fix the movable bracket, making the movable bracket unable to move. This solves the problem that the existing rotating shaft is fixed and positioned by four screws during fixing, resulting in a long time for the chain to be loosened or tightened. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the front three-dimensional structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the position structure of the mobile bracket of the utility model;

[0017] Figure 4 For this utility model Figure 3 A in the figure shows the enlarged structural diagram;

[0018] Figure 5 This is a schematic diagram of the outer shell structure of the utility model.

[0019] In the figure: 1. Outer shell; 11. Slide groove; 12. Shifting groove; 2. Fixed bracket; 21. Limit screw; 22. Limit block; 23. Vertical groove; 24. Positioning groove; 25. Block; 3. Moving bracket; 31. Slot; 32. Slider; 4. Rotating shaft; 41. Toothed plate; 5. Connecting column; 6. Cross bar; 7. Vertical plate; 8. Tension bolt. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1 - Figure 5 A harvester lifting device includes an outer shell 1, an outer wall of the outer shell 1 is fixedly equipped with a fixed bracket 2, the inner wall of the fixed bracket 2 is threadedly connected to a limiting screw 21, a limiting block 22 is provided on the top of the limiting screw 21, and an inner cavity of the fixed bracket 2 is provided with a movable bracket 3, and the inner cavity of the movable bracket 3 is penetrated by a card slot 31. By setting the limiting block 22, the limiting block 22 can be inserted into the card slot 31, and the movable bracket 3 cannot be moved. When the movable bracket 3 needs to be moved, the limiting screw 21 is rotated, and the limiting screw 21 rotates to drive the limiting block 22 to move, so that the limiting The positioning block 22 can be disengaged from the card slot 31, and the mobile bracket 3 can be moved at this time. The inner wall of the mobile bracket 3 is installed with a rotating shaft 4, and the inner cavity of the outer shell 1 is provided with a vertical plate 7. The inner wall of the vertical plate 7 is rotatably connected with a loosening bolt 8. The outer edge of the mobile bracket 3 is fixedly equipped with a connecting column 5, and the end of the connecting column 5 away from the mobile bracket 3 is fixedly equipped with a cross bar 6, and the cross bar 6 is threadedly connected to the loosening bolt 8. By rotating the loosening bolt 8, the loosening bolt 8 drives the cross bar 6, the connecting column 5 and the mobile bracket 3 to move, so that the rotating shaft 4 can be loosened or tightened. The loosening or tightening of the rotating shaft 4 facilitates the disassembly of the conveyor chain.

[0022] In a preferred embodiment, a gear disc 41 is fixedly sleeved on the inner wall of the rotating shaft 4, and the vertical plate 7 is located at the front end of the gear disc 41. By arranging the vertical plate 7 in front of the gear disc 41, when the gear disc 41 rotates, it drives the conveying chain to rotate, so that the conveying chain will not contact the vertical plate 7, and therefore the tightening bolt 8 will not be affected, thereby improving the rationality of the device. A baffle 25 is installed on the outer edge of the fixed bracket 2. By utilizing the setting of the baffle 25, the baffle 25 plays a role in limiting the movable bracket 3, and the baffle 25 can prevent the movable bracket 3 from moving outward.

[0023] In a preferred embodiment, a plurality of card slots 31 are provided, and the card slots 31 are evenly distributed. By providing a plurality of card slots 31 , the position of the mobile bracket 3 can be positioned more flexibly, thereby improving the flexibility of the device.

[0024] In a preferred embodiment, a vertical slot 23 is provided in the inner cavity of the fixed bracket 2, and the limit block 22 is slidably connected to the vertical slot 23. The vertical slot 23 serves to limit the limit block 22, so that the limit block 22 can only be lifted up and down, so that the rotation of the limit screw 21 can drive the limit block 22 to be lifted and lowered. A positioning slot 24 is provided on the left side of the vertical slot 23. By utilizing the setting of the positioning slot 24, by observing whether the positioning slot 24 corresponds to the card slot 31, when the positioning slot 24 corresponds to the card slot 31, the limit screw 21 can be rotated to allow the limit block 22 to enter the card slot 31.

[0025] In a preferred embodiment, a slide groove 11 is provided on the outer wall of the outer shell 1, and a slider 32 is fixedly installed on the outer edge of the movable bracket 3. The slider 32 is slidably connected to the slide groove 11. By utilizing the setting of the slide groove 11 and the slider 32, when the rotating shaft 4 is moving, the movable bracket 3 is also in a moving state, and the movable bracket 3 moves in a horizontal state, so that the two toothed discs 41 at both ends of the rotating shaft 4 correspond to each other, and the two toothed discs 41 will not be non-parallel.

[0026] In a preferred embodiment, a shift groove 12 is provided on the outer wall of the outer shell 1, and the cross bar 6 is slidably connected to the shift groove 12. By utilizing the setting of the shift groove 12, when the tensioning bolt 8 rotates, it will drive the cross bar 6 to move, and the cross bar 6 moves in the shift groove 12, so that the cross bar 6 can only move but not rotate, so that the rotation of the tensioning bolt 8 can drive the cross bar 6 to move, thereby improving the rationality of the device.

[0027] When the chain is tightened, the limit screw 21 is turned to move the limit block 22 in the slot 31, and the limit block 22 gradually disengages from the slot 31. Then, the cross bar 6, the connecting column 5 and the movable bracket 3 are driven to move by turning the tensioning bolt 8, and the movable bracket 3 drives the rotating shaft 4 and the toothed disc 41 to move, so that the chain on the toothed disc 41 can be loosened, which is convenient for the chain to be removed and replaced. When the rotating shaft 4 is tightened, the tensioning bolt 8 is reversed, and the tensioning bolt 8 drives the cross bar 6, the connecting column 5 and the movable bracket 3 to move, and the movable bracket 3 drives the rotating shaft 4 and the toothed disc 41 to move, so that the chain is tightened. By observing that the positioning groove 24 corresponds to the slot 31, when the positioning groove 24 corresponds to the slot 31, the limiting block 22 is driven to enter the slot 31 by turning the limiting screw 21. At this time, the movable bracket 3 cannot move and the chain is tightened.

[0028] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A harvester lifting device, comprising an outer shell (1), characterized in that: The outer wall of the outer shell (1) is fixedly equipped with a fixed bracket (2), the inner wall of the fixed bracket (2) is threadedly connected to a limiting screw (21), the top of the limiting screw (21) is provided with a limiting block (22), the inner cavity of the fixed bracket (2) is provided with a movable bracket (3), the inner cavity of the movable bracket (3) is penetrated by a card slot (31), the inner wall of the movable bracket (3) is installed with a rotating shaft (4), the inner cavity of the outer shell (1) is provided with a vertical plate (7), the inner wall of the vertical plate (7) is rotatably connected to a loosening bolt (8), the outer edge of the movable bracket (3) is fixedly equipped with a connecting column (5), the end of the connecting column (5) away from the movable bracket (3) is fixedly equipped with a cross bar (6), and the cross bar (6) is threadedly connected to the loosening bolt (8).

2. A harvester lifting device according to claim 1, characterized in that: A toothed disc (41) is fixedly sleeved on the inner wall of the rotating shaft (4), the vertical plate (7) is located at the front end of the toothed disc (41), and a blocking piece (25) is installed on the outer edge of the fixed bracket (2).

3. The harvester lifting device according to claim 1, characterized in that: A plurality of the card slots (31) are provided, and the plurality of card slots (31) are evenly distributed.

4. The harvester lifting device according to claim 1, characterized in that: A vertical slot (23) is provided in the inner cavity of the fixed bracket (2), the limiting block (22) is slidably connected to the vertical slot (23), and a positioning slot (24) is provided on the left side of the vertical slot (23).

5. The harvester lifting device according to claim 1, characterized in that: A sliding groove (11) is provided on the outer wall of the outer shell (1), and a sliding block (32) is fixedly mounted on the outer edge of the movable bracket (3), wherein the sliding block (32) is slidably connected to the sliding groove (11).

6. The harvester lifting device according to claim 1, characterized in that: A shift groove (12) is provided on the outer wall of the outer shell (1), and the cross bar (6) is slidably connected to the shift groove (12).

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