Turnover locking type soil sealing wheel height adjusting mechanism

Abstract

The utility model relates to an overturning locking type soil sealing wheel height adjusting mechanism which comprises two soil sealing wheels symmetrically arranged in a V shape, a square barrel fixing rod and a square barrel lifting rod, the two soil sealing wheels are connected through a V-shaped shaft, the square barrel lifting rod is fixedly connected to the middle of the V-shaped shaft, the square barrel fixing rod and the square barrel lifting rod are sleeved in a sliding mode, and the square barrel fixing rod is connected with the square barrel lifting rod. A nut seat is fixedly sleeved at the upper end opening of the square cylinder lifting rod, a screw rod is coaxially connected in the nut seat, a bearing is mounted at the upper end opening of the square cylinder fixing rod, the upper end of the screw rod is rotatably sleeved in the bearing, and a hand rocker is mounted on an extension shaft at the upper end of the screw rod; according to the mechanism, the screw rod can be driven to rotate through the hand rocker, the screw rod drives the square barrel lifting rod to slide up and down in the square barrel fixing rod through the nut seat, height adjustment of the two soil sealing wheels is achieved, height adjustment of the soil sealing wheels can be simply and efficiently completed through the adjustment mode, and the adjustment precision is high.

Description

Technical Field

[0001] The utility model relates to the field of sesame seeders, in particular to a flip-locking type soil-sealing wheel height adjustment mechanism. Background Art

[0002] The typical operation of a sesame seed drill includes stubble breaking, furrowing, sowing, soil sealing, and compacting. These two steps are crucial. Sealing tightly covers the seeds in the furrow, achieving an appropriate sowing depth. Compacting the soil increases the water absorption capacity of the seedling zone and ensures close contact between the seeds and the surrounding moist soil. The quality of these operations directly impacts the seed growth environment, playing a crucial role in seed emergence, growth, and development, ultimately affecting crop yield.

[0003] Currently, there are three main types of soil sealers: the splayed plate type, the double-disc (roller) type, and the extrusion type. The double-disc type is widely used due to its large soil sealing capacity, tight coverage, and low operating resistance. The double-disc type is connected to the planter frame via a bracket and requires a height adjustment mechanism to adjust the trenching depth. Currently, height adjustment is typically achieved through the use of bolts and slotted holes. Disassembling and reassembling the bolts is cumbersome, and the adjustment accuracy is limited, leaving room for improvement. Utility Model Content

[0004] In order to solve the above problems, the utility model proposes a flip-locking soil sealing wheel height adjustment mechanism.

[0005] The technical solution of the utility model is: a flip-locking soil sealing wheel height adjustment mechanism, comprising two soil sealing wheels, a square cylinder fixing rod and a square cylinder lifting rod arranged symmetrically in a V shape, the two soil sealing wheels are connected by a V-shaped shaft, a seat bearing is provided between the V-shaped shaft and the soil sealing wheel, the square cylinder lifting rod is fixedly connected to the middle of the V-shaped shaft, the square cylinder fixing rod and the square cylinder lifting rod are slidingly sleeved, the lower end of the square cylinder fixing rod and the lower end of the square cylinder lifting rod are both provided with an annular reinforcement block, a nut seat is fixedly sleeved at the upper port of the square cylinder lifting rod, the nut seat comprises a nut body and a square socket block connected to the lower end of the nut body, the square socket block is matched and fixedly sleeved in the square cylinder lifting rod, a screw rod is coaxially connected in the nut seat, the upper port of the square cylinder fixing rod is installed with a bearing, the upper end of the screw rod is rotatably sleeved in the bearing, and a hand crank is installed on the extension shaft at the upper end of the screw rod.

[0006] Preferably, a cross bar is provided radially at the upper end of the extension shaft, circular stops are provided at both ends of the cross bar, and a flip locking piece that can be sleeved on the outer side of the square tube fixing rod is hinged between the two ends of the cross bar.

[0007] Preferably, the flip locking piece is U-shaped as a whole, and two triangular ear plates are symmetrically provided at both ends of the flip locking piece, the tip of the triangular plate is provided with a hinge hole, and the upper end of the triangular ear plate is hinged to the outer end of the cross bar.

[0008] Preferably, a limit support is installed on the upper end of the square tube fixing rod, the bottom surface of the limit support is provided with a boss extending into the square tube fixing rod, and the bearing is installed in the groove in the middle of the limit support.

[0009] Preferably, two pressure plates are provided side by side on the surface of the limit support, and the corners of the pressure plates and the corners of the limit support are connected to the upper end of the square tube fixing rod by screws. An arc groove matching the size of the extension axis is provided in the inner side surface of the pressure plate, and the two pressure plates press the limit support tightly against the upper end of the square tube lifting rod.

[0010] Preferably, a limiting ring is provided in the middle of the extension shaft and presses against the surface of the pressure plate, and the size of the limiting ring is larger than the size of the arc groove.

[0011] Preferably, the hand crank is an L-shaped rod, the outer end of the L-shaped rod is provided with a gripping ball, the inner end of the L-shaped rod is provided with a shaft sleeve, and the shaft sleeve is fixedly sleeved on the upper end of the extension shaft.

[0012] Preferably, an assembly bracket is vertically connected to the middle of the side surface of the square tube fixing rod, and a docking plate is provided at the outer end of the assembly bracket.

[0013] The beneficial technical effects of the utility model are:

[0014] (1) The utility model can drive the screw to rotate through the hand crank, and the screw drives the square tube lifting rod to slide up and down in the square tube fixed rod through the nut seat to achieve the height adjustment of the two earth-sealing wheels. This adjustment method can complete the height adjustment of the earth-sealing wheels simply and efficiently, and has high adjustment accuracy.

[0015] (2) The flip lock of the utility model can be turned down and snapped onto the outer side of the square tube fixed rod, and the screw rod can be locked by the upper cross bar. When it is turned up, it can leave the outer side of the square tube fixed rod to release the lock. The screw rod can be freely rotated for height adjustment, avoiding the screw rod from rotating due to seeding vibration, ensuring the stability of the soil sealing wheel, and improving the soil sealing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the flip lock member of the utility model when it is flipped upward to release the lock;

[0018] Figure 3 This is a schematic diagram of the main structure of the utility model;

[0019] Figure 4 yes Figure 3 AA-direction cross-sectional structural diagram;

[0020] Figure 5 yes Figure 4 BB-direction cross-sectional structural diagram;

[0021] Figure 6 yes Figure 4 A partial enlarged view of .

[0022] In the figure, 31. soil sealing wheel, 32. V-shaped shaft, 33. square tube fixing rod, 34. square tube lifting rod, 351. nut seat, 352. screw, 353. bearing, 354. extension shaft, 355. hand crank, 356. bushing, 361. cross bar, 362. flip locking piece, 363. triangular ear plate, 371. pressure plate, 372. limit support, 373. screw, 374. limit ring, 38. assembly bracket. DETAILED DESCRIPTION

[0023] Example 1, see attached Figure 1-6 A flip-lock type earth-sealing wheel height adjustment mechanism includes two earth-sealing wheels 31, a square cylinder fixing rod 33 and a square cylinder lifting rod 34 arranged symmetrically in a V shape. The two earth-sealing wheels 31 are connected by a V-shaped shaft 32, and the V-shaped shaft and the earth-sealing wheel are connected by a bearing 353. The square cylinder lifting rod 34 is fixedly connected to the middle of the V-shaped shaft 32. The square cylinder fixing rod 33 and the square cylinder lifting rod 34 are slidably fitted. The height adjustment of the two earth-sealing wheels 31 is achieved by sliding the square cylinder lifting rod up and down in the square cylinder fixing rod 33. A nut seat 351 is fixedly mounted at the upper end thereof, and the nut seat and the square cylinder lifting rod 34 form an integrated structure. A screw rod 352 is coaxially connected to the nut seat 351, and a bearing 353 is installed at the upper end of the square cylinder fixing rod 33. The upper end of the screw rod 352 is rotatably mounted in the bearing 353, and a hand crank 355 is installed on the extension shaft 354 at the upper end of the screw rod 352. The screw rod 352 is driven to rotate by the hand crank, and the screw rod 352 drives the square cylinder lifting rod 34 to rise or fall in the square cylinder fixing rod 33 through the nut seat 351.

[0024] The upper end of the square cylinder fixing rod 33 is installed with a limit support 372, and the bearing 353 is installed in the groove in the middle of the limit support. The bearing 353 is stably supported by the limit support. Two pressure plates 371 are provided side by side on the surface of the limit support 372. The limit is fixed to the upper end of the square cylinder fixing rod 33 by the two pressure plates. The side-by-side pressure plates 371 structure also has the advantage of easy assembly and disassembly. The corners of the pressure plate 371 and the corners of the limit support 372 are connected to the upper end of the square cylinder fixing rod 33 by screws 373. The inner side surface of the pressure plate 371 is provided with an arc groove matching the size of the extension shaft 354, and the screw rod 352 rotates freely between the circles formed by the two arc grooves.

[0025] A limiting ring 374 is provided in the middle of the extension shaft 354 and presses against the surface of the pressure plate 371 . The limiting ring 374 serves to limit the axial position of the screw rod 352 , ensuring that the screw rod 352 has sufficient driving support force on the square tube lifting rod 34 .

[0026] The hand crank 355 is configured as an L-shaped rod, the inner end of which is provided with a shaft sleeve 356, which is fixedly sleeved on the upper end of the extension shaft 354. The L-shaped hand crank 355 structure can rotate the screw rod 352 above the adjustment mechanism, making it convenient to rotate the screw rod 352 in a standing state to adjust the square tube lifting rod 34.

[0027] An assembly bracket 38 is vertically connected to the middle of the side surface of the square tube fixing rod 33 , and the square tube fixing rod 33 is fixedly connected to the frame of the seed drill through the assembly bracket 38 .

[0028] When the height adjustment mechanism of this embodiment is used, the upper end of the hand crank 355 is held by hand to drive the screw rod 352 to rotate. The screw rod 352 drives the nut seat 351 to rise or fall along the screw rod 352 through the thread. The square cylinder lifting rod 34 rises and falls in the square cylinder fixed rod 33 along with the nut seat 351, and the square cylinder lifting rod 34 slides up and down in the square cylinder fixed rod 33. During this process, the square cylinder-shaped rod body socket structure can form a circumferential limit function to prevent the square cylinder lifting rod 34 from rotating in the square cylinder fixed rod 33. The sealing wheel 31 is height-adjusted along with the square cylinder lifting rod 34, and the height adjustment of the sealing wheel 31 can be completed simply and efficiently. The threaded adjustment method has high adjustment accuracy.

[0029] Example 2, see attached Figure 1-2On the basis of the first embodiment, this embodiment has a cross bar 361 radially provided at the upper end of the extension shaft 354, and a flip locking piece 362 that can be fitted on the outer side of the square tube fixing rod 33 is hinged between the two ends of the cross bar. The flip locking piece is U-shaped as a whole. The U-shaped structure allows the flip locking piece to be buckled on the outer side of the square tube fixing rod 33. Two triangular ear plates 363 are symmetrically provided at both ends of the flip locking piece 362. The upper ends of the triangular ear plates 363 are hinged to the outer end of the cross bar 361. The flip locking piece 362 can be rotated at both ends of the cross bar 361 to achieve up and down flipping.

[0030] The flip locking piece 362 of this embodiment can be flipped down at both ends of the cross bar 361 and can be buckled on the outer side surface of the square tube fixing rod 33. The cross bar 361 is limited by the circumference to lock the screw rod 352. The flip locking piece 362 is flipped upward to leave the outer side surface of the square tube fixing rod 33, and the lock is released. The screw rod 352 can rotate freely for height adjustment to prevent the screw rod 352 from rotating due to sowing vibration.

Claims

1. A flip-lock type earth-sealing wheel height adjustment mechanism, characterized by: It includes two soil-sealing wheels, a square cylinder fixing rod and a square cylinder lifting rod arranged symmetrically in a V shape. The two soil-sealing wheels are connected by a V-shaped shaft. The square cylinder lifting rod is fixedly connected to the middle part of the V-shaped shaft. The square cylinder fixing rod and the square cylinder lifting rod are slidingly mounted. A nut seat is fixedly mounted at the upper end of the square cylinder lifting rod. A screw rod is coaxially connected to the nut seat. A bearing is installed at the upper end of the square cylinder fixing rod. The upper end of the screw rod is rotatably mounted in the bearing. A hand crank is installed on the extension shaft at the upper end of the screw rod.

2. The flip-lock type earth-sealing wheel height adjustment mechanism according to claim 1, characterized in that: The upper end portion of the extension shaft is provided with a cross bar in the radial direction, and a flip locking piece capable of being sleeved on the outer side surface of the square tube fixing rod is hinged between the two ends of the cross bar.

3. The flip-lock type earth-sealing wheel height adjustment mechanism according to claim 2, characterized in that: The flip locking piece is U-shaped as a whole, and two triangular ear plates are symmetrically provided at both ends of the flip locking piece, and the upper ends of the triangular ear plates are hinged to the outer ends of the crossbar.

4. The flip-lock type earth-sealing wheel height adjustment mechanism according to claim 1, characterized in that: A limited support is installed on the upper end of the square tube fixing rod, and a bearing is installed in a groove in the middle of the limited support.

5. The flip-lock type earth-sealing wheel height adjustment mechanism according to claim 4, characterized in that: Two pressure plates are arranged side by side on the surface of the limit support. The corners of the pressure plates and the corners of the limit support are connected to the upper end of the square tube fixing rod through screws. The inner side of the pressure plate is provided with an arc groove matching the size of the extension shaft.

6. The flip-lock type earth-sealing wheel height adjustment mechanism according to claim 5, characterized in that: A limiting ring is provided in the middle of the extension shaft and presses against the surface of the pressure plate.

7. The flip-lock type earth-sealing wheel height adjustment mechanism according to claim 1, characterized in that: The hand crank is an L-shaped rod, the inner end of the L-shaped rod is provided with a shaft sleeve, and the shaft sleeve is fixedly sleeved on the upper end of the extension shaft.

8. The flip-lock type earth-sealing wheel height adjustment mechanism according to claim 1, characterized in that: The middle part of the side surface of the square tube fixing rod is vertically connected with an assembly bracket.

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