Adjustable rake for agricultural straw collection

Abstract

The utility model discloses adjustable raking machine for agricultural straw collection, including frame, still including adjusting mechanism, the frame surface is provided with adjusting mechanism, the adjusting mechanism includes movable frame, big arm, small arm, mounting hole, sleeve, spring, limit pin, connecting pipe, positioning hole and fingered wheel disc, the both sides of frame are symmetrical installation big arm through movable frame and are installed small arm in both ends of big arm, through adjusting the position of each group fingered wheel disc, reach the purpose of adjusting the distance between fingered wheel disc, when collecting corn straw or the straw of greater humidity, can increase the distance between adjacent fingered wheel disc, avoid the condition of material clamping, reduce the wear and tear of fingered wheel disc, when collecting the wheat straw or the dry straw, can reduce the distance between adjacent fingered wheel disc, reduce the material leakage condition in the process of collecting, and the distance between fingered wheel disc is adjusted conveniently, satisfies different operation use demand.

Description

Technical Field

[0001] This utility model relates to the field of hay rake technology, and in particular to an adjustable hay rake for agricultural straw collection. Background Technology

[0002] A hay rake is a harvesting machine that gathers loose hay or straw on the ground into hay strips or piles. It is mainly used to promote the drying of hay and the subsequent collection of straw. According to different working methods, it is divided into roller hay rakes, finger wheel hay rakes and rotary hay rakes. Among them, finger wheel hay rakes are often used in several agricultural straw recycling operations.

[0003] Existing finger-wheel rakes have the following drawbacks during use: Finger-wheel rakes typically use multiple sets of finger wheels symmetrically arranged on both sides to collect straw. The rakes on both sides are mounted on the main arms, and while the angle and spacing between the main arms are adjustable, the positions of the finger wheels on the main arms are fixed and cannot be adjusted. For thick straw, such as silage corn stalks, the narrow spacing between the finger wheels during operation can cause the thick stalks to be squeezed and jammed by adjacent finger wheels, affecting the operation of the finger wheels. The dryness or wetness of the straw also affects the operation of the finger wheels. For dry, loose straw, a large spacing between the finger wheels can cause over-scraping, while for highly moist straw, a small spacing can cause the finger wheels to jam. Therefore, we propose an adjustable rake for agricultural straw collection. Utility Model Content

[0004] The main purpose of this utility model is to provide an adjustable straw rake for agricultural straw collection. Through the adjustment mechanism set on the surface of the frame, the adjacent spacing between the two side finger discs can be adjusted to meet different usage needs and effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An adjustable straw rake for agricultural straw collection includes a frame and an adjustment mechanism. The adjustment mechanism is provided on the surface of the frame and includes a movable frame, a main arm, a secondary arm, mounting holes, a sleeve, a spring, a limit pin, a connecting pipe, positioning holes, and a rotary dial. The main arms are symmetrically installed on both sides of the frame via the movable frame, and secondary arms are installed at both ends of the main arms. The secondary arm has a mounting hole at its end, and a sleeve is vertically welded inside the secondary arm near the mounting hole. The sleeve is movably connected to a limit pin extending to the outside of the secondary arm via a spring. The secondary arm is sleeved with a connecting pipe, and a rotary dial is installed at the end of the connecting pipe. Positioning holes corresponding to the mounting holes are equidistantly spaced on the top of the connecting pipe.

[0007] Furthermore, each end of the upper arm is welded with a connecting ring, and a threaded sleeve is movably connected to the connecting ring. The threaded sleeve has an internal threaded groove. A screw is welded to the middle of the side of the lower arm, which is screwed into the threaded sleeve and the interior of the upper arm. The upper arm and the lower arm are connected by the threaded sleeve and the screw. The threaded sleeve is installed at the end of the upper arm through the connecting ring and can rotate. When the lower arm is connected, the screw on the side of the lower arm is aligned with the threaded sleeve and the threaded sleeve is screwed so that the end of the screw enters the interior of the upper arm, thus fixing the upper arm and the lower arm together. At the same time, the distance between the index wheel discs between adjacent lower arms can be adjusted by adjusting the screwing depth.

[0008] Furthermore, a traction arm connected to a traction device is provided at the middle position of the side of the frame, and a support frame is installed on the side of the traction arm. Moving wheels are installed on both sides of the bottom of the frame. The frame is connected to the external traction device through the traction arm, and the moving wheels enable the frame to move smoothly. The support frame provides auxiliary support for the frame when there is no external traction device.

[0009] Furthermore, an end ring is welded to the surface of the limiting pin near the spring, and the end of the spring is connected to the surface of the end ring. The end ring is located inside the sleeve. The end ring can limit the position of the limiting pin so that its bottom is always inside the sleeve.

[0010] Furthermore, the end of the connecting pipe is provided with a mounting plate, and the mounting plate is connected to the finger wheel disk through its internal bearing assembly; the end of the connecting pipe is connected to the finger wheel disk through the mounting plate and its internal bearing assembly.

[0011] Furthermore, an annular cavity is formed inside the threaded sleeve on the outer periphery of the inner thread groove facing the upper arm side, and the end of the connecting ring is located inside the annular cavity; the end of the connecting ring being located inside the annular cavity installs the threaded sleeve and the connecting ring together, while allowing the threaded sleeve to rotate normally.

[0012] Compared with the prior art, this utility model has the following beneficial effects: Two sets of large arms are mounted on both sides of the frame via movable supports. Each set of large arms has two sets of finger wheel disks mounted on its end via a forearm, resulting in eight sets of finger wheel disks symmetrically distributed on both sides of the frame surface. The forearm end and the finger wheel disk mounting end are connected by a connecting pipe. A limiting pin is provided inside the forearm, penetrating the top of the connecting pipe. Before operation, the limiting pin is pressed to separate it from the connecting pipe. The connecting pipe is then pulled out at the forearm end, adjusting the mounting hole to align with the positioning holes at different positions. After reaching the appropriate position, the limiting pin resets and inserts into the corresponding positioning hole to fix the position of the connecting pipe, simultaneously fixing the distance between the finger wheel disks and the forearm end. By adjusting the position of each set of finger wheel disks, the distance between the finger wheel disks can be adjusted. When collecting corn stalks or stalks with high moisture content, the distance between adjacent finger rollers can be increased to avoid jamming and reduce wear. When collecting wheat stalks or drier stalks, the distance between adjacent finger rollers can be decreased to reduce leakage during collection. The distance between the finger rollers is easy to adjust to meet different operational needs. The connection between the boom and forearm is achieved through a screw sleeve and a screw rod. The screw sleeve is installed at the end of the boom via a connecting ring and can rotate. When connecting the forearm, align the screw rod on the side of the forearm with the screw sleeve and tighten the screw sleeve so that the end of the screw rod enters the boom, thus fixing the boom and forearm together. The distance between the finger rollers of adjacent forearms can also be adjusted by adjusting the tightening depth. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the adjustable straw rake for agricultural straw collection according to this utility model.

[0014] Figure 2 This is a top view schematic diagram of the adjustable straw rake for agricultural straw collection according to this utility model.

[0015] Figure 3 This is a schematic diagram of the connection between the upper arm and the lower arm of the adjustable straw rake for agricultural straw collection according to this utility model.

[0016] Figure 4 This is a schematic diagram of the connection between the forearm and the connecting pipe of the adjustable straw rake for agricultural straw collection according to this utility model.

[0017] Figure 5 This is a schematic diagram of the connection between the boom and the screw of the adjustable straw rake for agricultural straw collection according to this utility model.

[0018] In the diagram: 1. Frame; 2. Traction arm; 201. Support frame; 202. Moving wheel; 3. Adjustment mechanism; 301. Movable frame; 302. Main arm; 303. Forearm; 304. Mounting hole; 305. Sleeve; 306. Spring; 307. Limit pin; 308. End ring; 309. Connecting pipe; 310. Positioning hole; 311. Mounting plate; 312. Finger wheel plate; 4. Connecting ring; 401. Screw sleeve; 402. Ring cavity; 403. Internal thread groove; 404. Screw. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] like Figure 1-5 As shown, an adjustable straw rake for agricultural straw collection includes a frame 1 and an adjustment mechanism 3. The adjustment mechanism 3 is provided on the surface of the frame 1. The adjustment mechanism 3 includes a movable frame 301, a large arm 302, a small arm 303, a mounting hole 304, a sleeve 305, a spring 306, a limit pin 307, a connecting pipe 309, a positioning hole 310, and a finger wheel 312. The large arms 302 are symmetrically installed on both sides of the frame 1 via the movable frame 301, and small arms 303 are installed at both ends of the large arms 302. 3. The forearm 303 has a mounting hole 304 at its end and a sleeve 305 is vertically welded inside the forearm 303 near the mounting hole 304. The sleeve 305 is movably connected to a limiting pin 307 extending to the outside of the forearm 303 via a spring 306. The end of the forearm 303 is sleeved with a connecting tube 309 and a finger wheel 312 is installed at the end of the connecting tube 309. The top of the connecting tube 309 has positioning holes 310 at equal intervals corresponding to the position of the mounting hole 304.

[0021] The upper arm 302 has a connecting ring 4 welded to its end, and a threaded sleeve 401 is movably connected to the connecting ring 4. The threaded sleeve 401 has an internal threaded groove 403. A screw 404 is welded to the middle of the side of the lower arm 303 and screwed into the threaded sleeve 401 and the upper arm 302. The upper arm 302 and the lower arm 303 are connected by the threaded sleeve 401 and the screw 404. The threaded sleeve 401 is installed at the end of the upper arm 302 through the connecting ring 4 and can rotate. When the lower arm 303 is connected, the screw 404 on the side of the lower arm 303 is aligned with the threaded sleeve 401 and the threaded sleeve 401 is screwed so that the end of the screw 404 enters the upper arm 302, thus fixing the upper arm 302 and the lower arm 303 together. At the same time, the distance between the finger wheel 312 between adjacent lower arms 303 can be adjusted by adjusting the screwing depth.

[0022] The frame 1 has a traction arm 2 connected to the traction equipment at the middle of its side. A support frame 201 is installed on the side of the traction arm 2. The frame 1 has casters 202 installed on both sides of its bottom. The frame 1 is connected to the external traction equipment through the traction arm 2. The casters 202 enable the frame 1 to move smoothly. The support frame 201 provides auxiliary support for the frame 1 when there is no external traction equipment.

[0023] The limiting pin 307 has an end ring 308 welded to its surface near the spring 306, and the end of the spring 306 is connected to the surface of the end ring 308. The end ring 308 is located inside the sleeve 305. The end of the connecting pipe 309 is provided with a mounting plate 311, and the mounting plate 311 is connected to the finger wheel 312 through its internal bearing assembly. The end ring 308 can limit the position of the limiting pin 307, so that its bottom is always inside the sleeve 305. The end of the connecting pipe 309 is connected to the finger wheel 312 through the mounting plate 311 and its internal bearing assembly.

[0024] The threaded sleeve 401 has an annular cavity 402 located on the outer periphery of the inner thread groove 403 facing the side of the upper arm 302. The end of the connecting ring 4 is located inside the annular cavity 402. The connection ring 4 is located inside the annular cavity 402, which connects the threaded sleeve 401 and the connecting ring 4 together, and at the same time allows the threaded sleeve 401 to rotate normally.

[0025] It should be noted that this utility model is an adjustable straw rake for agricultural straw collection. During operation, two sets of large arms 302 are provided on both sides of the frame 1 via movable frames 301. The end of each set of large arms 302 is equipped with two sets of finger wheel discs 312 via small arms 303. That is, eight sets of finger wheel discs 312 are symmetrically distributed on both sides of the surface of the frame 1. The end of the small arm 303 is connected to the mounting end of the finger wheel disc 312 via a connecting pipe 309. The small arm 303 is provided with a limiting pin that passes through the top of the connecting pipe 309. 307. Before operation, press the limiting pin 307 to separate it from the connecting pipe 309. Pull the connecting pipe 309 at the end of the forearm 303 and adjust the alignment between the mounting hole 304 and the positioning holes 310 at different positions. After reaching the appropriate position, reset the limiting pin 307 and insert it into the corresponding positioning hole 310 to fix the position of the connecting pipe 309. At the same time, fix the distance between the finger wheel 312 and the end of the forearm 303. Adjust the position of each set of finger wheels 312 to adjust the finger wheel 312. The purpose of the spacing between the finger discs 312 is to increase the spacing when collecting corn stalks or stalks with high moisture content, thus avoiding material jamming and reducing wear on the finger discs 312. Conversely, when collecting wheat stalks or drier stalks, the spacing between the finger discs 312 can be reduced to minimize material leakage during collection. The spacing between the finger discs 312 is easily adjustable to meet different operational needs. The connection between the boom 302 and the forearm 303 is achieved through a threaded sleeve 401 and a screw. The 404 is used for connection. The threaded sleeve 401 is installed at the end of the upper arm 302 through the connecting ring 4. The threaded sleeve 401 can rotate. When docking the lower arm 303, the side thread 404 of the lower arm 303 is aligned with the threaded sleeve 401 and the threaded sleeve 401 is turned so that the end of the thread 404 enters the interior of the upper arm 302, thus fixing the upper arm 302 and the lower arm 303 together. At the same time, the distance between the finger wheel 312 between adjacent lower arms 303 can also be adjusted by adjusting the screwing depth.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. Adjustable rake for agricultural straw collection, comprising a frame (1), characterized in that, It also includes an adjustment mechanism (3), which is provided on the surface of the frame (1). The adjustment mechanism (3) includes a movable frame (301), a large arm (302), a small arm (303), a mounting hole (304), a sleeve (305), a spring (306), a limit pin (307), a connecting pipe (309), a positioning hole (310), and a finger wheel (312). The large arms (302) are symmetrically installed on both sides of the frame (1) through the movable frame (301), and small arms (303) are installed at both ends of the large arms (302). 03) An installation hole (304) is provided at the end position and a sleeve (305) is vertically welded inside the forearm (303) near the installation hole (304). A limiting pin (307) extending to the outside of the forearm (303) is movably connected inside the sleeve (305) by a spring (306). A connecting tube (309) is sleeved at the end of the forearm (303) and a finger wheel (312) is installed at the end of the connecting tube (309). Positioning holes (310) corresponding to the positions of the installation hole (304) are provided at equal intervals on the top of the connecting tube (309).

2. The adjustable rake for agricultural straw collection according to claim 1, characterized in that: The upper arm (302) is welded with a connecting ring (4) at each end and a threaded sleeve (401) is movably connected to the connecting ring (4). The threaded sleeve (401) has an inner threaded groove (403) inside. A screw (404) is welded to the middle of the side of the lower arm (303) and screwed into the threaded sleeve (401) and the upper arm (302).

3. The adjustable rake for agricultural straw collection according to claim 1, characterized in that: A traction arm (2) connected to the traction device is provided at the middle position of the side of the frame (1). A support frame (201) is installed on the side of the traction arm (2). Moving wheels (202) are installed on both sides of the bottom of the frame (1).

4. The adjustable straw rake for agricultural straw collection according to claim 1, characterized in that: The limiting pin (307) has an end ring (308) welded to the side of the spring (306) and the end of the spring (306) is connected to the surface of the end ring (308). The end ring (308) is located inside the sleeve (305).

5. The adjustable straw rake for agricultural straw collection according to claim 1, characterized in that: The end of the connecting pipe (309) is provided with a mounting plate (311), and the mounting plate (311) is connected to the finger wheel disc (312) through its internal bearing assembly.

6. The adjustable rake for agricultural straw collection according to claim 2, characterized in that: The threaded sleeve (401) has an annular cavity (402) on the outer periphery of the inner thread groove (403) facing the upper arm (302), and the end of the connecting ring (4) is located inside the annular cavity (402).

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