A toothed grapevine stone-picking machine

Abstract

A rack-and-tooth vineyard stone-picking machine, belonging to the technical field of stone-picking devices, includes a frame with a universal rotating shaft; a stone-scraping mechanism comprising a rotating arm, a stone-scraping rake, and a rebound assembly; the rotating arm is mounted on the frame and can rotate upwards; the stone-scraping rake is mounted on the rotating arm; the rebound assembly is connected to the rotating arm, and the rotating arm rotates through the extension and contraction of the rebound assembly; a stone-conveying mechanism comprising a chain conveyor, a shovel head, and a drive component; the chain conveyor is mounted on the frame and located behind the stone-scraping rake; the shovel head is connected to the chain conveyor and positioned close to the ground, located between the chain conveyor and the stone-scraping rake; one end of the drive component is connected to the chain conveyor, and the other end is connected to the universal rotating shaft; and a stone collection box is mounted on the frame and located behind the chain conveyor.

Description

Technical Field

[0001] This utility model belongs to the technical field of stone-picking devices, and specifically relates to a toothed grapevine stone-picking machine. Background Technology

[0002] Grape cultivation has specific soil requirements, with some high-quality vineyards established in sandy and stony soils. These soils, due to their good permeability and large diurnal temperature range, are conducive to sugar accumulation, producing grapes with extremely high sweetness and significant economic value. However, undeveloped sandy and stony soils are rich in stones, especially large ones, which severely hinder the growth and extension of grape roots and create significant difficulties for later field management. Therefore, before cultivating such land for grape cultivation, it is essential to effectively remove stones from the surface and shallow soil.

[0003] However, traditional manual stone picking, as the most primitive method, relies entirely on human labor for identifying, picking up, and transporting stones. This method is not only extremely labor-intensive for workers but also incredibly inefficient. To address the drawbacks of manual stone picking, specialized stone-picking machinery has emerged on the market. For example, Chinese Patent Publication No. CN201220335108.2 discloses a high-efficiency stone-picking machine. This type of equipment uses power to drive tillage tools (such as rotary tillers and harrow teeth) deep into the soil, excavating stones and throwing them to a separating screen or conveying mechanism, ultimately collecting the stones and improving stone picking efficiency to some extent.

[0004] However, the stones in sandy and gravelly terrain are irregularly shaped, hard, and vary greatly in size. When tillage tools encounter large or tightly embedded stones during operation, they are prone to severe impact and jamming. This hard jamming not only accelerates the wear and tear of the tillage tools (blades), but may also cause micro-cracks or even breakage of the blades under alternating stress. At the same time, it can also cause the chain drive system to jam, shortening the service life of critical working components and increasing maintenance costs and downtime. Utility Model Content

[0005] Based on this, the present invention provides a rack-and-tooth vineyard stone removal machine to solve the technical problems existing in the prior art, such as stones blocking the tillage tools, causing serious wear and damage, as well as causing transmission system jamming and unstable operating efficiency.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A rack-shaped vineyard stone-picking machine includes a frame, on which a universal rotating shaft is provided; A stone-cutting mechanism includes a rotating arm, a stone-cutting rake, and a rebound assembly. The rotating arm is mounted on the frame and can rotate upwards. The stone-cutting rake is mounted on the rotating arm. The rebound assembly is connected to the rotating arm and drives the rotating arm to rotate through the extension and contraction of the rebound assembly. The stone conveying mechanism includes a chain conveyor, a shovel head, and a drive unit. The chain conveyor is mounted on the frame and located behind the stone rake. The shovel head is connected to the chain conveyor and is positioned close to the ground. The shovel head is located between the chain conveyor and the stone rake. One end of the drive unit is connected to the chain conveyor, and the other end is connected to the universal rotating shaft. A stone collection box is installed on the frame and located behind the chain conveyor.

[0007] Preferably, the rotating arm includes a first connecting arm and a second connecting arm. One end of the first connecting arm is clamped to the frame by a clamp, and the other end of the first connecting arm is hinged to the second connecting arm by a pin.

[0008] Preferably, the rebound assembly includes a rotating seat, a sliding seat, a sliding rod, and a push spring. The rotating seat is disposed on the second connecting arm, and the sliding seat is disposed on the first connecting arm. The sliding seat has a sliding hole. One end of the sliding rod is hinged to the rotating seat, and the other end of the sliding rod passes through the sliding hole and is slidably sleeved in the sliding seat. The sliding rod is provided with a limiter to limit the sliding rod from sliding out of the sliding seat. The push spring is sleeved on the sliding rod and is located between the rotating seat and the sliding seat.

[0009] Preferably, one end of the sliding rod is provided with a thread, and the limiting member is a limiting nut, which is screwed onto the thread.

[0010] Preferably, the stone-scraping rake is a figure-eight shaped rake body.

[0011] Preferably, the stone-shoveling rake has a plurality of rake teeth, and the spacing between two adjacent rake teeth increases from the middle outwards.

[0012] Preferably, the chain conveyor includes a pair of chain frames, a pair of rotating shafts, and a rotating chain drum. The pair of chain frames are disposed on the frame, and the pair of rotating shafts are rotatably disposed between the pair of chain frames. A first sprocket is disposed on each rotating shaft, and the rotating chain drum is engaged with the sprockets of the pair of rotating shafts via a first chain.

[0013] Preferably, the driving component includes a reversing joint, a second chain, a driven shaft, and a third chain. The reversing joint is fixedly mounted on the frame, and the driving end of the reversing joint is connected to the universal joint. The second chain is connected to the driven end of the reversing joint. The driven shaft is rotatably mounted on the frame, and the other end of the second chain is connected to the driven shaft. One end of the third chain is connected to the driven shaft, and the other end is connected to the rotating shaft.

[0014] Preferably, the front end of the shovel head is provided with a first conical spike and a second conical spike, the length of the first conical spike being longer than that of the second conical spike, and the first conical spike and the second conical spike being staggered on the shovel head.

[0015] Compared with the prior art, the present invention has at least the following advantages: Because the stones in the sandy gravel are loosened by the stone-scraping mechanism, the stones will not be tightly embedded in the sandy gravel. When the shovel head comes into contact with the stones, it can easily scoop them up, avoiding violent impact when the stones in the sandy gravel come into contact with the shovel head, reducing the wear of the shovel head and extending its service life. Furthermore, because the shovel head does not violently impact the stones, it will not cause the chain on the chain conveyor to jam, reducing maintenance costs. Attached Figure Description

[0016] Figure 1 Axonometric drawing of a toothed grapevine stone-picking machine.

[0017] Figure 2 This is a top view of a toothed grapevine stone-picking machine.

[0018] Figure 3 This is an isometric view of the stone conveying mechanism.

[0019] Figure 4 This is an isometric drawing of the stone-cutting mechanism.

[0020] In the diagram: frame 100, universal rotating shaft 110, stone-cutting mechanism 200, rotating arm 210, first connecting arm 211, second connecting arm 212, clamp 213, pin 214, stone-cutting rake 220, rake teeth 221, spring-loaded assembly 230, rotating seat 231, sliding seat 232, sliding hole 2321, sliding rod 233, limiting component 2331, push spring 234, stone conveying mechanism 300, chain conveyor 310, chain frame 311, rotating shaft 312, rotating chain cylinder 313, first sprocket 314, first chain 315, shovel head 320, first conical spike 321, second conical spike 322, driving component 330, reversing joint 331, second chain 332, driven shaft 333, third chain 334, stone collection box 400. Detailed Implementation

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other. The technical solutions of the present invention will be further described below with reference to the accompanying drawings of the embodiments. The present invention is not limited to the specific embodiments described below.

[0022] It should be understood that the same or similar reference numerals in the accompanying drawings of the embodiments correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "front," "rear," "left," "right," "top," and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms describing positional relationships in the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0023] Please refer to Figures 1 to 4 A rack-and-pinion vineyard stone-picking machine includes a frame 100 with a universal joint shaft 110 mounted on it. The frame 100 serves as the overall framework supporting the stone-picking machine. Rubber rollers on both sides of the frame 100 support and drive its movement. The universal joint shaft 110 is formed by several shafts with universal joints connected sequentially. Furthermore, the stone-picking machine is connected to a tractor, and the tractor's drive end is connected to the universal joint shaft 110, causing it to rotate.

[0024] The stone-cutting mechanism 200 includes a rotating arm 210, a stone-cutting rake 220, and a rebound assembly 230. The rotating arm 210 is mounted on the frame 100 and is capable of upward rotation. That is, when one end of the rotating arm 210 is fixed to the frame 100, pushing the other end of the rotating arm 210 allows it to rotate around a pivot point and rotate vertically up and down. The stone-cutting rake 220 is mounted on the rotating arm 210, and its lower end can penetrate deep into the soil. The rake 220 penetrates to a depth of 5-10cm, and as it advances, it removes larger stones (4-10cm in diameter) from the sand and gravel, exposing them to the surface for easy collection. The rebound assembly 230 is connected to the rotating arm 210; the extension and retraction of the rebound assembly 230 drives the rotating arm 210 to rotate. Under normal conditions, the rake 220 penetrates deep into the sand and gravel, collecting stones from the shallow layer (1-5cm) or the surface. When no stones are stuck in the sand or gravel... When large rocks deep in the ground (5-10cm) or stones firmly embedded in the sand and gravel block the rock-digging rake 220, the rebound component 230 is at its initial extension and is not compressed. When there are large rocks deep in the sand and gravel (5-10cm) or stones tightly embedded in the sand and gravel, when the lower end of the rock-digging rake 220 comes into contact with such stones, the stones will block the rock-digging rake 220 from moving forward, but the rock-digging rake 220 will be pulled forward. Therefore, if the rock-digging rake 220 needs to... As it continues to move forward, the rotating arm 210 rotates upward, compressing the rebound component 230 to contract, which in turn causes the stone rake 220 to flip upward. During the flipping process, the stone rake 220 continues to move forward, maintaining contact with the stones. The stone rake 220 will pry and flip the stones, removing them from the sand and gravel for easier collection later. Furthermore, even if the stones are firmly stuck to the sand and gravel, the stone rake 220 will loosen them during the flipping process, also facilitating collection later.

[0025] The stone conveying mechanism 300 includes a chain conveyor 310, a shovel head 320, and a drive unit 330. The chain conveyor 310 is mounted on the frame 100 and located behind the stone rake 220. The shovel head 320 is connected to the chain conveyor 310 and is positioned close to the ground. The shovel head 320 is located between the chain conveyor 310 and the stone rake 220. One end of the drive unit 330 is connected to the chain conveyor 310, and the other end is connected to the universal rotating shaft 110. The shovel head 320 penetrates 5-10 cm into the sand and gravel.

[0026] Stone collection box 400 is installed on the frame 100 and located behind the chain conveyor 310.

[0027] By starting the tractor, the tractor moves forward, driving the stone-collecting machine. Since the stone-cutting mechanism 200 is located behind the tractor, by adjusting the height of the stone-cutting mechanism 200, the stone-cutting rake 220 penetrates 5cm-10cm into the sand and gravel. The stone-transporting mechanism 300 is located behind the stone-cutting mechanism 200, and the shovel head 320 penetrates 5-10cm into the sand and gravel. As the stone-cutting rake 220 moves forward and penetrates deeper into the sand and gravel, it collects stones from the shallow layer (1-5cm) or the surface. When there are no large stones stuck deep in the sand and gravel (5-10cm) or stones firmly embedded in the sand and gravel obstructing the stone-cutting rake 220, the rebound component 230 is at its initial extension and is not compressed. When there are large stones or tightly embedded stones deep in the sand and gravel (5-10cm), the stone-digging rake 220 will block its progress when its lower end comes into contact with such stones. However, the stone-digging rake 220 will be pulled forward. Therefore, if the stone-digging rake 220 needs to continue moving forward, the rotating arm 210 will rotate upward, compressing the rebound component 230 to contract, thereby causing the stone-digging rake 220 to flip upward. During the flipping process, the stone-digging rake 220 continues to move forward and remains in contact with the stones. The stone-digging rake 220 will pry and flip the stones, removing them from the sand and gravel. Furthermore, even if the stones are firmly stuck to the sand and gravel, the stone-digging rake 220 will loosen them by prying them during the flipping process. Subsequently, the loose stones in the gravel are scooped up by the shovel head 320. The universal joint 110 drives the drive component 330 to rotate, which in turn drives the chain conveyor 310. The chain conveyor 310 transports the stones scooped up by the shovel head 320 into the stone collection box 400, completing the stone collection operation. Because the stones in the gravel are loosened by the stone-scraping mechanism 200, the stones are not tightly embedded in the gravel. When the shovel head 320 comes into contact with the stones, it can easily scoop them up, avoiding violent impacts when the stones come into contact with the shovel head 320, reducing wear on the shovel head 320, and extending its service life. Furthermore, because the shovel head 320 does not violently impact the stones, it does not cause the chain on the chain conveyor 310 to jam, reducing maintenance costs.

[0028] In one possible embodiment, the stone-cutting mechanism 200 is provided in several groups and is evenly distributed on the frame 100. Providing several groups of stone-cutting mechanisms 200 is beneficial for cutting out stones and can also prevent a single stone-cutting mechanism 200 from accumulating too many stones and sand, which would lead to excessive weight and increased load.

[0029] In a preferred embodiment, the rotating arm 210 includes a first connecting arm 211 and a second connecting arm 212. One end of the first connecting arm 211 is clamped to the frame 100 by a clamp 213, which facilitates distance adjustment and replacement of the rotating arm 210. The other end of the first connecting arm 211 is hinged to the second connecting arm 212 by a pin 214. Since the first connecting arm 211 is fixed to the frame 100, the second connecting arm 212 rotates through the pin 214 and rotates up and down in the vertical direction.

[0030] In a preferred embodiment, the rebound assembly 230 includes a rotating seat 231, a sliding seat 232, a sliding rod 233, and a push spring 234. The rotating seat 231 is disposed on the second connecting arm 212, and the sliding seat 232 is disposed on the first connecting arm 211. The sliding seat 232 has a sliding hole 2321. One end of the sliding rod 233 is hinged to the rotating seat 231, and the other end of the sliding rod 233 passes through the sliding hole 2321 and is slidably sleeved in the sliding seat 232. A limit member 2331 is provided on the sliding rod 233 to limit the sliding rod 233 from sliding out of the sliding seat 232. The push spring 234 is sleeved on the sliding rod 233 and is located between the rotating seat 231 and the sliding seat 232. In the initial state, the push spring 234 is in its longest elastic state. The sliding rod 233 and the push spring 234 are limited by the limiting member 2331 to prevent the sliding rod 233 and the push spring 234 from sliding out of the sliding hole 2321. At this time, the first rotating arm 210 and the second rotating arm 210 are at their maximum rotation angle, and the stone rake 220 is also at its lowest point. In the rotating state, that is, when the stone rake 220 contacts the tightly embedded stone, the stone rake 220 rotates upward, pushing the second rotating arm 210 to rotate around the pin 214, thereby pushing the rotary spring to contract. The sliding rod 233 extends out of the sliding hole 2321. When the stone rake 220 avoids and digs out the stone, since the stone no longer squeezes the stone rake 220, the rotary spring returns to its original length and extends. As the stone-digging mechanism 200 moves forward, the stone rake 220 continues to extend into the original depth of the sand and gravel.

[0031] In a preferred embodiment, one end of the sliding rod 233 is threaded, and the limiting member 2331 is a limiting nut, which is screwed onto the thread. This allows adjustment of the extension and retraction length of the rotary spring, and also adjusts the depth to which the rock-digging rake 220 penetrates the sand and gravel.

[0032] In a preferred embodiment, the stone-shoveling rake 220 is a figure-eight shaped rake body. It has the function of gathering stones, and as the stones gather, they flow out from both sides of the stone-shoveling rake 220.

[0033] In a preferred embodiment, the stone-shoveling rake 220 has a plurality of rake teeth 221, and the spacing between two adjacent rake teeth 221 increases progressively from the middle outwards. As stones accumulate in the stone-shoveling rake 220, large stones will flow out from both sides of the rake teeth 221, and small stones will flow out from the middle of the rake teeth 221.

[0034] In a preferred embodiment, it should be noted that the chain conveyor 310 can be an existing device, such as the lifting mechanism mentioned in patent number CN201220335108.2, which all have the function of transporting stones. For example, the chain conveyor 310 includes a pair of chain frames 311, a pair of rotating shafts 312, and a rotating chain drum 313. The pair of chain frames 311 are arranged on the frame 100, and the pair of rotating shafts 312 are rotatably arranged between the pair of chain frames 311. A first sprocket 314 is arranged on the rotating shaft 312, and the rotating chain drum 313 is engaged with the sprockets of the pair of rotating shafts 312 through a first chain 315.

[0035] In a preferred embodiment, the drive component 330 includes a reversing joint 331, a second chain 332, a driven shaft 333, and a third chain 334. The reversing joint 331 is fixedly mounted on the frame 100, and the driving end of the reversing joint 331 is connected to the universal joint 110. The second chain 332 is connected to the driven end of the reversing joint 331. The driven shaft 333 is rotatably mounted on the frame 100, and the other end of the second chain 332 is connected to the driven shaft 333. One end of the third chain 334 is connected to the driven shaft 333, and the other end is connected to the rotating shaft 312.

[0036] Specifically, the movement process of the stone conveying mechanism 300 is as follows: after the shovel head 320 picks up the stone, the drive end on the tractor drives the universal joint 110 to rotate. The universal joint 110 drives the drive component 330 of the stone conveying mechanism 300 to rotate. Specifically, the universal joint 110 drives the reversing joint 331 to change direction (the reversing joint 331 is an existing reversing device that changes direction through bevel gears). The reversing joint 331 drives the second chain 332 to rotate. The second chain 332 drives the driven shaft 333 to rotate. The driven shaft 333 drives the third chain 334 to rotate. The third chain 334 drives the rotating shaft 312 to rotate. Finally, the pair of rotating shafts 312 drives the rotating chain drum 313 to rotate, completing the stone conveying operation and transporting the stone to the stone collection box 400 at the rear.

[0037] In a preferred embodiment, the front end of the shovel head 320 is provided with a first conical spike 321 and a second conical spike 322. The first conical spike 321 is longer than the second conical spike 322, and the first conical spike 321 and the second conical spike 322 are staggered on the shovel head 320. The provision of the first conical spike 321 and the second conical spike 322 facilitates the shovel head 320's penetration into sandy or gravelly ground. Furthermore, the staggered arrangement of the first conical spike 321 and the second conical spike 322 reduces the wear rate of the shovel head 320, the first conical spike 321, and the second conical spike 322.

[0038] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A rack-type vineyard stone picker characterized by comprising: include A frame, on which a universal rotating shaft is provided; A stone-cutting mechanism includes a rotating arm, a stone-cutting rake, and a rebound assembly. The rotating arm is mounted on the frame and can rotate upwards. The stone-cutting rake is mounted on the rotating arm. The rebound assembly is connected to the rotating arm and drives the rotating arm to rotate through the extension and contraction of the rebound assembly. The stone conveying mechanism includes a chain conveyor, a shovel head, and a drive unit. The chain conveyor is mounted on the frame and located behind the stone rake. The shovel head is connected to the chain conveyor and is positioned close to the ground. The shovel head is located between the chain conveyor and the stone rake. One end of the drive unit is connected to the chain conveyor, and the other end is connected to the universal rotating shaft. A stone collection box is installed on the frame and located behind the chain conveyor.

2. A grapevine row stone picker as claimed in claim 1, characterised in that, The rotating arm includes a first connecting arm and a second connecting arm. One end of the first connecting arm is clamped to the frame by a clamp, and the other end of the first connecting arm is hinged to the second connecting arm by a pin.

3. A grapevine row stone picker as claimed in claim 2 wherein, The rebound assembly includes a rotating seat, a sliding seat, a sliding rod, and a push spring. The rotating seat is disposed on the second connecting arm, and the sliding seat is disposed on the first connecting arm. The sliding seat has a sliding hole. One end of the sliding rod is hinged to the rotating seat, and the other end of the sliding rod passes through the sliding hole and is slidably sleeved in the sliding seat. The sliding rod is provided with a limiter to limit the sliding rod from sliding out of the sliding seat. The push spring is sleeved on the sliding rod and is located between the rotating seat and the sliding seat.

4. A grapevine row stone picker as claimed in claim 3 wherein, One end of the sliding rod is provided with a thread, and the limiting component is a limiting nut, which is screwed onto the thread.

5. A toothed grapevine stone-picking machine as described in claim 2, characterized in that, The stone-cutting rake has an "eight" shaped body.

6. A toothed grapevine stone-picking machine as described in claim 5, characterized in that, The rock-shoveling rake has several rake teeth, and the distance between two adjacent rake teeth increases from the middle to the outside.

7. A toothed grapevine stone-picking machine as described in claim 5, characterized in that, The chain conveyor includes a pair of chain frames, a pair of rotating shafts, and a rotating chain drum. The pair of chain frames are mounted on the frame, and the pair of rotating shafts are rotatably mounted between the pair of chain frames. A first sprocket is mounted on each rotating shaft, and the rotating chain drum is engaged with the sprockets of the pair of rotating shafts via a first chain.

8. A toothed grapevine stone-picking machine as described in claim 7, characterized in that, The driving component includes a reversing joint, a second chain, a driven shaft, and a third chain. The reversing joint is fixedly mounted on the frame. The driving end of the reversing joint is connected to the universal joint. The second chain is connected to the driven end of the reversing joint. The driven shaft is rotatably mounted on the frame. The other end of the second chain is connected to the driven shaft. One end of the third chain is connected to the driven shaft, and the other end is connected to the rotating shaft.

9. A toothed grapevine stone-picking machine as described in claim 1 or 8, characterized in that, The front end of the shovel head is provided with a first conical spike and a second conical spike. The length of the first conical spike is longer than that of the second conical spike, and the first conical spike and the second conical spike are misaligned on the shovel head.

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