Variable-diameter belt wheel for quickly adjusting planting spacing and transplanter

Abstract

The application discloses a variable-diameter pulley for quickly adjusting the planting plant distance and a transplanting machine, and belongs to the technical field of agricultural mechanical transmission mechanisms. The variable-diameter pulley comprises a variable-diameter slide body, a plurality of sliding grooves are arranged on the outer circumferential side of the variable-diameter slide body, and the sliding grooves are arranged in an inclined mode from one end of the variable-diameter slide body to the other end. The variable-diameter slide body is connected with a plurality of wheel edge moving mechanisms, the number of the wheel edge moving mechanisms is the same as that of the sliding grooves, each wheel edge moving mechanism is matched with a sliding groove and can move along the sliding groove, and then the wheel diameter of the pulley is changed.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of agricultural machinery transmission mechanism, and particularly relates to a variable-diameter pulley for quickly adjusting planting plant spacing and a transplanting machine. BACKGROUND

[0002] The variable-diameter pulley is applied in mechanical transmission, and mainly realizes continuous change of transmission ratio by adjusting the size of pulley radius. It has the advantages of simple structure, stable transmission and convenient adjustment, and is more and more applied in various fields, but has not been applied in the aspect of agricultural field crop transplanting.

[0003] At present, the agricultural field crop transplanting machine is step speed regulation, and has certain limitations in transplanting plant spacing adjustment, especially in the aspect of well cellar transplanting, because stepless speed regulation cannot be realized, which directly leads to the fact that the transplanting plant spacing and well cellar formation cannot be satisfied at the same time. The working walking speed, hole punching speed and transplanting plant spacing of the existing well cellar forming and transplanting machine are matched with each other and fixed. If other gears are switched, the corresponding transplanting plant spacing does not meet the agricultural planting requirements under the premise of meeting the well cellar formation; under the premise of meeting the transplanting plant spacing, the well cellar cannot be formed, and the agricultural planting requirements cannot be met. The artificial backpack type well cellar making machine is powered by a small gasoline engine, and a hole punching device is held by hand to punch holes. Although this method of making a well cellar meets the agricultural planting requirements, it has low automation, high labor intensity and low working efficiency, and cannot be widely applied. The existing well cellar forming and transplanting machine and the traditional artificial backpack type well cellar making method cannot meet the modern field crop planting requirements. SUMMARY

[0004] In view of the deficiencies in the prior art, the purpose of the present application is to provide a variable-diameter pulley for quickly adjusting planting plant spacing and a transplanting machine. The device obtains a continuously variable transmission ratio by adjusting the size of the pulley radius, realizes stepless speed regulation of the transplanting machine, and solves the problems of well cellar formation and plant spacing adjustment.

[0005] In order to achieve the above-mentioned purpose, the present application is realized by the following technical scheme:

[0006] In the first aspect, the present application provides a variable-diameter pulley for quickly adjusting planting plant spacing, which comprises a variable-diameter slide body, a plurality of sliding grooves are arranged on the outer peripheral side of the variable-diameter slide body, and the sliding grooves are arranged obliquely from one end to the other end of the variable-diameter slide body; the variable-diameter slide body is connected with a plurality of wheel edge moving mechanisms, the number of wheel edge moving mechanisms is the same as that of sliding grooves, each wheel edge moving mechanism is matched with a sliding groove and can move along the sliding groove, thereby changing the pulley diameter.

[0007] As a further technical scheme, the wheel edge moving mechanism comprises a sector wheel edge, and sectors of wheel edges of multiple wheel edge moving mechanisms form a circle; the inner side of the sector wheel edge is fixedly connected with a support rod, the other end of the support rod is fixedly connected with a sliding block, the sliding block is arranged in a sliding groove of the variable-diameter sliding channel body, and the sliding block is movable along the sliding groove.

[0008] As a further technical scheme, the sector wheel edge is in a sector structure, and a belt groove is arranged on the circumferential side of the sector wheel edge; and the support rod is arranged along the radial direction of the sector wheel edge.

[0009] As a further technical scheme, the sliding block is arranged to be inclined, and the inclination angle of the sliding block is the same as the inclination angle of the sliding groove.

[0010] As a further technical scheme, the variable-diameter sliding channel body is provided with a sliding channel limiting block corresponding to the side of the sliding groove, the sliding channel limiting blocks on the two sides of the sliding groove are arranged oppositely and form a limiting sliding channel; and the sliding block is arranged in the limiting sliding channel.

[0011] As a further technical scheme, multiple sliding grooves are arranged uniformly around the central axis of the variable-diameter sliding channel body, and multiple wheel edge moving mechanisms are arranged uniformly around the variable-diameter sliding channel body.

[0012] As a further technical scheme, the wheel edge moving mechanism is connected with a moving positioning mechanism, the moving positioning mechanism comprises two pairs of movably connected moving positioning assemblies, and the moving positioning assemblies are arranged on the outer periphery of the variable-diameter sliding channel body; the moving positioning assembly comprises an annular moving support sleeve, a positioning bent plate is arranged on the side of the moving support sleeve, the moving support sleeves of the two moving positioning assemblies are fixedly connected, and the positioning bent plates of the two moving positioning assemblies are arranged oppositely to form a positioning groove for positioning the wheel edge moving mechanism.

[0013] As a further technical scheme, the outer side of the moving support sleeve of one of the moving positioning assemblies is fixedly provided with a push-pull support plate, the push-pull support plate is connected with an adjusting handle, the adjusting handle is further connected with a support fixed block, and the support fixed block is fixed to one end surface of the variable-diameter sliding channel body.

[0014] As a further technical scheme, a first nut and a welded nut are fixedly arranged at the connection position of the adjusting handle and the support fixed block, a second nut and a third nut are fixedly arranged at the connection position of the adjusting handle and the push-pull support plate, and one side of the support fixed block is weldedly connected with the welded nut; the long rod portion of the adjusting handle is provided with a thread, and the end portion is provided with a handle.

[0015] In the second aspect, the application further provides a transplanting machine, which comprises a variable-speed transmission mechanism, the variable-speed transmission mechanism comprises a driving variable-diameter belt pulley and a driven variable-diameter belt pulley, a conveying belt is sleeved between the driving variable-diameter belt pulley and the driven variable-diameter belt pulley, and the driving variable-diameter belt pulley and the driven variable-diameter belt pulley both adopt the variable-diameter belt pulley as described above.

[0016] The beneficial effects of the present application are as follows:

[0017] The variable-diameter pulley of the present application sets the chute of the variable-diameter slide body in an inclined form, adjusts the size of the pulley radius through the movement of the wheel edge movement mechanism along the chute, obtains a continuously variable transmission ratio, realizes stepless speed change of the transplanting machine, realizes the application of the variable-diameter pulley on the field crop transplanting machine, can realize stepless speed change, obtain a continuously variable transmission ratio, meet the needs of well formation and plant spacing adjustment, and the operation effect meets the requirements of agricultural planting, thereby laying a foundation for large-area popularization and application of the well formation transplanting machine for field crops.

[0018] The variable-diameter pulley of the present application is simple in structure, small in size, convenient to assemble and disassemble, time-saving and labor-saving in adjustment, small in occupied space, and directly assembled into the transmission shaft. In use, the static adjustment is performed according to the hole forming quality and the transplanting plant spacing, and the working effect can meet the requirements of agricultural planting.

[0019] Compared with other solutions, the variable-diameter pulley of the present application has low development cost, small size, and small occupied space, and can meet the use of small chassis transplanting machines. BRIEF DESCRIPTION OF DRAWINGS

[0020] The drawings accompanying the specification of the present application form a part thereof, serve to provide further understanding of the present application, and together with the description of the exemplary embodiments of the present application and the explanation thereof serve to explain the present application, and do not constitute an improper limitation of the present application.

[0021] Figure 1 is a front view of the variable-diameter pulley according to one or more embodiments of the present application;

[0022] Figure 2 is a back view of the variable-diameter pulley according to one or more embodiments of the present application;

[0023] Figure 3 is a side view of the variable-diameter pulley according to one or more embodiments of the present application;

[0024] Figure 4 is Figure 1 A-A sectional view in the variable-diameter pulley according to one or more embodiments of the present application;

[0025] Figure 5 is Figure 2 B-B sectional view in the variable-diameter pulley according to one or more embodiments of the present application;

[0026] Figure 6 is a schematic view of the overall structure of the variable-diameter pulley according to one or more embodiments of the present application;

[0027] Figure 7 is a working schematic view of the variable-diameter pulley in the application of the transplanting machine according to one or more embodiments of the present application;

[0028] In the drawings: the mutual distance or size is exaggerated for showing the position of each part, and the schematic diagram is only for illustration;

[0029] 1 variable diameter slide body, 2 slide limiting block, 3 sliding block, 4 supporting rod, 5 fan-shaped wheel edge, 6 moving supporting sleeve, 7 positioning bending plate, 8 fixed connecting plate, 9 push-pull supporting plate, 10 moving positioning assembly, 11 first nut, 12 supporting fixed block, 13 welded nut, 14 adjusting handle, 15 second nut, 16 third nut, 17 sliding groove, 18 conveying belt, 19 driving variable diameter pulley, 20 driven variable diameter pulley. DETAILED DESCRIPTION

[0030] It should be noted that the following detailed description is illustrative only and is intended to provide further description of the application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0031] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0032] For the convenience of description, if "upper", "lower", "left", "right" appear in the present application, it only means consistent with the upper, lower, left, right direction of the drawing itself, and does not limit the structure, only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0033] As introduced in the background, there are deficiencies in the prior art, and the variable diameter pulley as an important part of the stepless variable speed transmission plays a key role. In order to realize the stepless variable speed of the cellar forming transplanting machine, the present application proposes a variable diameter pulley for quickly adjusting the planting plant distance and a transplanting machine.

[0034] In a typical embodiment of the present application, as shown in Figure 1 A variable diameter pulley for quickly adjusting the planting plant distance is proposed, which comprises a variable diameter slide body 1, a moving positioning mechanism, a wheel edge moving mechanism, etc. The wheel edge moving mechanism is connected with the moving positioning mechanism, the moving positioning mechanism and the wheel edge moving mechanism are connected with the variable diameter slide body 1, and the cooperation position with the variable diameter slide body 1 can be changed to change the diameter of the pulley.

[0035] The variable-diameter sliding body 1 is a cylindrical structure, and an inner spline is arranged at the center of the variable-diameter sliding body 1 and connected with a transmission shaft of the machine body.

[0036] A plurality of sliding grooves 17 are arranged on the outer circumferential side of the variable-diameter sliding body 1, the plurality of sliding grooves 17 are arranged uniformly around the central axis of the variable-diameter sliding body 1, and the sliding grooves 17 are arranged obliquely from one end to the other end of the variable-diameter sliding body 1, that is, the opening depth of the sliding grooves 17 gradually increases from one end to the other end of the variable-diameter sliding body 1; when the wheel edge moving mechanism is matched to the end with a larger opening depth of the sliding grooves 17, the diameter of the belt wheel is smaller, and when the wheel edge moving mechanism is matched to the end with a smaller opening depth of the sliding grooves 17, the diameter of the belt wheel is larger.

[0037] In the embodiment, six sliding grooves 17 are arranged on the variable-diameter sliding body 1, and the six sliding grooves are arranged uniformly on the circumferential side of the variable-diameter sliding body 1.

[0038] In the preferred embodiment, the variable-diameter sliding body 1 is provided with sliding path limiting blocks 2 corresponding to the sides of the sliding grooves 17, and the sliding path limiting blocks can limit the wheel edge moving mechanism. When arranged, three bolt holes can be arranged on each of the two sides of the bottom surface of each sliding groove 17, and the bolt holes are arranged at equal intervals, and the two sides of the bottom surface of each sliding groove 17 are respectively bolted with the sliding path limiting blocks 2.

[0039] The sliding path limiting blocks 2 can be L-shaped, and the sliding path limiting blocks on the two sides of the sliding groove are arranged oppositely and form a limiting sliding path.

[0040] One end surface of the variable-diameter sliding body 1 is connected with a support fixed block 12; the variable-diameter sliding body 1 is provided with three groups of threaded holes on the end surface, and the three groups of threaded holes are arranged uniformly, each group is provided with two threaded holes, and the variable-diameter sliding body 1 is bolted with the support fixed block 12; that is, three support fixed blocks 12 are arranged, the three support fixed blocks are arranged uniformly on the variable-diameter sliding body, and each support fixed block is bolted with one group of two threaded holes of the variable-diameter sliding body 1.

[0041] The wheel edge moving mechanism is provided with a plurality of wheel edge moving mechanisms, the plurality of wheel edge moving mechanisms are arranged uniformly in the circumferential direction of the variable-diameter sliding body 1, the wheel edge moving mechanism is matched with the sliding groove of the variable-diameter sliding body 1 and can move along the sliding groove; in the embodiment, six wheel edge moving mechanisms are arranged, and the six wheel edge moving mechanisms correspond to the six sliding grooves of the variable-diameter sliding body 1.

[0042] The wheel edge moving mechanism comprises a sector wheel edge 5, a sliding block 3 and a support rod 4, the sector wheel edge 5 is a sector structure, the sector wheel edges 5 of the plurality of wheel edge moving mechanisms form a circle and form a whole belt wheel form to support the conveying belt, two belt wheel grooves are arranged on the circumferential side of the sector wheel edge 5 to install the conveying belt, the inner side of the sector wheel edge 5 is fixedly connected with the support rod 4, the other end of the support rod 4 is fixedly connected with the sliding block 3, the support rod 4 is arranged in the radial direction of the sector wheel edge 5 and can support the sector wheel edge, and the sliding block 3 is installed in the sliding groove 17 of the variable-diameter sliding body 1 and can move along the sliding groove 17.

[0043] In this embodiment, the support rod 4 is welded with the fan-shaped wheel rim 5 and the sliding block 3 to ensure stable and reliable connection.

[0044] In further embodiments, the sliding block 3 is arranged obliquely, and the oblique angle is consistent with the oblique angle of the sliding groove 17, so that the sliding block can move smoothly in the sliding groove. The sliding block 3 is arranged in the limiting sliding groove formed by the sliding limiting block 2, so as to limit the movement of the sliding block.

[0045] The moving positioning mechanism includes two pairs of moving positioning assemblies 10 arranged in pairs, and the moving positioning assemblies 10 are installed on the outer periphery of the variable-diameter sliding channel body 1.

[0046] The moving positioning assembly 10 includes a moving support sleeve 6, a positioning bent plate 7, a fixed connecting plate 8, and a push-pull support plate 9. The moving support sleeve 6 is annular in structure and embraces the outer periphery of the variable-diameter sliding channel body 1. The moving support sleeve 6 is provided with six openings, which are arranged uniformly along the circumference. The positioning bent plate 7 is arranged in the opening and welded with the moving support sleeve 6. Three fixed connecting plates 8 are arranged on the same end of the moving support sleeve 6 as the positioning bent plate 7, and are arranged uniformly along the circumference and welded with the moving support sleeve 6. The moving support sleeves 6 of the two moving positioning assemblies 10 are arranged adjacently, and the fixed connecting plates 8 are provided with bolts to connect the two moving positioning assemblies 10 together.

[0047] The positioning bent plate 7 is U-shaped in structure and forms a positioning half-groove. The positioning bent plates 7 of the two moving positioning assemblies 10 are arranged oppositely to form a complete positioning groove. The support rod 4 of the wheel rim moving mechanism is arranged in the positioning groove surrounded by the positioning bent plate 7, and the support rod 4 penetrates the positioning groove, so that the sliding block 3 can cooperate with the sliding groove 17.

[0048] Three push-pull support plates 9 are fixedly arranged on the outer side of the moving support sleeve 6 of one of the moving positioning assemblies 10. The three push-pull support plates 9 are uniformly distributed along the circumference and are arranged in cross with the positioning bent plate 7 and the fixed connecting plate 8. The push-pull support plate 9 is welded with the moving support sleeve 6.

[0049] The push-pull support plate 9 is provided with a through hole for the adjustment handle 14 to penetrate. The adjustment handle 14 also penetrates the support fixed block 12. The first nut 11 is fixedly arranged at the connection between the adjustment handle 14 and the support fixed block 12, and the welded nut 13 is arranged at the connection between the adjustment handle 14 and the push-pull support plate 9. The second nut 15 and the third nut 16 are fixedly arranged at the connection between the adjustment handle 14 and the push-pull support plate 9. The support fixed block 12 is welded with the welded nut 13 on one side, which is used for auxiliary positioning when the adjustment handle rotates.

[0050] The long rod part of the adjusting handle 14 is provided with a screw thread, and the end is provided with a handle for manual adjustment. One end of the adjusting handle 14 is connected with the moving support sleeve 6 through the push-pull support plate 9, and the other end is connected with the variable-diameter slide body 1 through the support fixing block 12.

[0051] In another typical embodiment of the present application, as shown in Figure 7 a transplanting machine is provided, which comprises a variable-speed transmission mechanism, the variable-speed transmission mechanism comprises a driving variable-diameter pulley 19 and a driven variable-diameter pulley 20, the driving variable-diameter pulley 19 and the driven variable-diameter pulley 20 are sleeved with a conveying belt 18, and the driving variable-diameter pulley 19 and the driven variable-diameter pulley 20 are both variable-diameter pulleys as described above.

[0052] The use method of the variable-diameter pulley is as follows:

[0053] According to the requirements of different crop planting plant spacings, the variable-diameter pulley is statically adjusted. When a smaller planting plant spacing is required, the first nut (3) and the third nut (3) at the adjusting handle 14 of the driving variable-diameter pulley 19 are loosened, the adjusting handle 14 is rotated clockwise, the adjusting handle 14 pushes the moving positioning assembly 10 to move forward along the variable-diameter slide body 1, and then drives the sliding block 3 to move upward along the slope in the sliding groove 17; under the action of the sliding block movement, the support rod 4 moves outward in the positioning groove surrounded by the positioning bent plate 7, so that all the sector wheel edges 5 move outward equally, and the diameter of the variable-diameter pulley becomes larger.

[0054] The first nut (3) and the second nut (3) at the adjusting handle of the driven variable-diameter pulley 20 are loosened, the adjusting handle 14 is rotated counterclockwise, the adjusting handle 14 pulls the moving positioning assembly 10 to move backward along the variable-diameter slide body 1, and then drives the sliding block 3 to move downward along the slope in the sliding groove 17; under the action of the sliding block movement, the support rod 4 moves inward in the positioning groove surrounded by the positioning bent plate 7, so that all the sector wheel edges move inward equally, and the diameter of the variable-diameter pulley becomes smaller, so that a larger transmission ratio can be obtained.

[0055] When a larger planting plant spacing is required, the adjusting methods of the driving variable-diameter pulley and the driven variable-diameter pulley are respectively opposite to the above, so that a smaller transmission ratio can be obtained.

[0056] Different planting plant spacings correspond to different transmission ratios, and each planting plant spacing corresponds to the diameter of the driving variable-diameter pulley and the diameter of the driven variable-diameter pulley. During the adjustment of the planting plant spacing, only the diameters corresponding to the driving variable-diameter pulley and the driven variable-diameter pulley are adjusted according to the required planting plant spacing size.

[0057] The above merely provides the preferred embodiments of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the principles and technical scope of the present application shall fall into the scope of the present application.

Claims

1. A variable diameter pulley for quickly adjusting planting spacing, characterized in that, The system includes a variable diameter slide body, with multiple grooves provided on the outer periphery of the variable diameter slide body. The grooves are inclined from one end of the variable diameter slide body to the other end. The variable diameter slide body is connected to multiple wheel-side moving mechanisms. The number of wheel-side moving mechanisms is the same as the number of grooves. Each wheel-side moving mechanism cooperates with a groove and can move along the groove, thereby changing the diameter of the pulley. The wheel-side moving mechanism includes a fan-shaped wheel edge, and the fan-shaped wheel edges of multiple wheel-side moving mechanisms form a circle; the inner side of the fan-shaped wheel edge is fixedly connected to a support rod, and the other end of the support rod is fixedly connected to a slider. The slider is placed in the groove of the variable diameter slide body, and the slider can move along the groove. It also includes a moving positioning mechanism, with the wheel-side moving mechanism connected to the moving positioning mechanism. The moving positioning mechanism includes two docked moving positioning components, which are disposed on the outer periphery of the variable diameter slide rail. Each moving positioning component includes an annular moving support sleeve, with a positioning bending plate on the side of the moving support sleeve. The moving support sleeves of the two moving positioning components are fixedly connected, and the positioning bending plates of the two moving positioning components are arranged opposite each other to form a positioning groove for positioning the wheel-side moving mechanism. The depth of the chute gradually increases from one end of the variable diameter chute to the other.

2. The variable diameter pulley as described in claim 1, characterized in that, The fan-shaped wheel edge has a fan-shaped structure, and a wheel groove is provided on the periphery of the fan-shaped wheel edge; the support rod is arranged radially along the fan-shaped wheel edge.

3. The variable diameter pulley as described in claim 1, characterized in that, The slider is tilted, and its tilt angle is the same as that of the groove.

4. The variable diameter pulley as described in claim 1, characterized in that, The variable diameter slide body is provided with a slide limit block on the side of the slide groove, and the slide limit blocks on both sides of the slide groove are arranged opposite to each other to form a limit slide; the slider is disposed in the limit slide.

5. The variable diameter pulley as described in claim 1, characterized in that, Multiple grooves are evenly distributed around the central axis of the variable diameter slide body, and multiple wheel-side moving mechanisms are evenly distributed around the circumference of the variable diameter slide body.

6. The variable diameter pulley as described in claim 1, characterized in that, One of the moving positioning components has a push-pull support plate fixedly installed on the outside of the moving support sleeve. The push-pull support plate is connected to the adjusting handle, and the adjusting handle is also connected to the support fixing block. The support fixing block is fixed to one end face of the variable diameter slide body.

7. The variable diameter pulley as described in claim 6, characterized in that, The adjustment handle and the support block are fixedly connected by a first nut and a welding nut, and the adjustment handle and the push-pull support plate are fixedly connected by a second nut and a third nut. One side of the support block is welded to the welding nut. The long rod of the adjustment handle is threaded, and the end is provided with a handle.

8. A transplanter, characterized in that, The system includes a speed-changing transmission mechanism, which comprises a driving variable diameter pulley and a driven variable diameter pulley. A conveyor belt is fitted between the driving and driven variable diameter pulleys. Both the driving and driven variable diameter pulleys are variable diameter pulleys as described in any one of claims 1-7.

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