Handle angle adjusting device for small agricultural machinery

Abstract

The utility model discloses a small agricultural machine handle angle adjusting device which comprises a small agricultural machine, a handle is arranged on one side of the small agricultural machine, a rotating device is arranged on one side of the small agricultural machine and comprises an installation frame, a rotating plate and a rotating sleeve, the rotating plate is connected to the top end of the rotating sleeve, the rotating sleeve is rotationally arranged on the installation frame, and an adjusting device is installed on the rotating plate. The adjusting device comprises a spiral groove, an adaptive block, a control sleeve, an adaptive sleeve, a connecting plate, a fixing sleeve, an adaptive groove, a sliding block and a spiral block, the spiral groove is formed in the outer side of the adaptive sleeve, the connecting plate is connected to one side of the control sleeve, the adaptive groove is formed in the inner side of the adaptive sleeve, the sliding block is connected to one side of the adaptive block, and the spiral block is arranged on one side of the connecting plate. A clamping mechanism is arranged on the outer side of the fixing sleeve, the clamping mechanism comprises a control panel, a clamping sleeve, a limiting rod, a limiting plate, an arc-shaped groove and a round hole, flexible adjustment of the transverse angle and the longitudinal angle of the handle is achieved, stepless adjustment of the height of the handle is achieved, and meanwhile the structural stability is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to agricultural implement technical field more particularly, it relates to a small agricultural machine handle angle adjusting device. BACKGROUND

[0002] In the process of the continuous development of small agricultural machine technology, with the continuous improvement of the degree of agricultural mechanization, the small agricultural machine operation convenience and ergonomics are put forward higher technical requirements, however, the existing small agricultural machine handle structure is faced with multiple technical problems in the actual application process, seriously restricts the improvement of agricultural production efficiency and operation comfort.

[0003] The primary technical problem is the fixed structure of small agricultural machine handle brings the operation range limited problem, in the current mainstream small agricultural machine design, handle usually adopts fixed installation mode, this technical defect is particularly prominent in actual operation, because the handle horizontal width is bigger and cannot rotate adjustment, will form the significant cultivation dead angle in the operation process, this structural limitation directly leads to the operation range of agricultural machine is seriously limited, this not only greatly reduces the operation efficiency, also increases the labor intensity of operator, along with the extension of operation time, the fatigue of operator will gradually increase, eventually leads to the work efficiency to drop significantly, brings obvious negative influence to agricultural production.

[0004] Secondly, the fixed handle structure also has obvious defects in height adaptability, this traditional design completely ignores the individualized demand of different height operators, its fixed height setting makes the handle unable to carry out flexible stepless adjustment in the vertical direction, this structural limitation directly leads to the ergonomics requirement of different height operators cannot be met, in actual application, this design defect shows as the unnatural operation posture, long time operation is easy to cause occupational fatigue, the short and small operator needs to use with the head up, is easy to lead to the neck and shoulder fatigue, and the tall operator needs to operate with the waist bent, increases the burden of waist, finally influences the comfort and safety of agricultural machine operation.

[0005] More tricky is, although some equipment adds height adjusting device to realize the flexible adjustment of handle height, tries to improve the operation comfort through this way, but this kind of improved design still has fundamental engineering defects, these devices can realize stepless adjustment of height in theory, but its structure design is too simple, lacks the necessary anti-loosening fixing mechanism, in the equipment running process, especially when facing frequent ground bumping or continuous operation vibration, the adjusting structure is prone to loosening and displacement, once the position of adjusting device is offset, the handle height that originally carefully adjusts will change, leads to the operation comfort to decline, seriously influences the normal operation state of agricultural machine, brings the unpredictable negative influence to agricultural production efficiency. UTILITY MODEL CONTENT

[0006] (I) Technical problems solved

[0007] In view of the problems in the prior art, the utility model provides a small agricultural machine handle angle adjusting device to solve the technical problems mentioned in the background art.

[0008] (II) Technical solutions

[0009] To achieve the above object, the utility model provides the following technical scheme: a small agricultural machine handle angle adjusting device, including small agricultural machine, one side of small agricultural machine is equipped with handle, its characterized in that: one side of small agricultural machine is provided with rotating device, rotating device includes mounting bracket, switch board and rotating sleeve, mounting bracket is detachably arranged on one side of small agricultural machine, switch board is fixedly connected at the top of rotating sleeve, and rotating sleeve is rotatably arranged on mounting bracket, the adjusting device is installed on switch board, the adjusting device includes spiral groove, adaptive block, control sleeve, adaptive sleeve, connecting plate, fixed sleeve, adaptive slot, sliding block and spiral block, spiral groove is formed in the outside of adaptive sleeve, adaptive block is slidably arranged in adaptive slot, control sleeve is rotatably sleeved on the outside of fixed sleeve, adaptive sleeve is sleeved on the outside of fixed sleeve, connecting plate is connected on one side of control sleeve, fixed sleeve is fixedly connected on one side of switch board, adaptive slot is formed in the inside of adaptive sleeve, sliding block is connected on one side of adaptive block, spiral block is fixedly arranged on one side of connecting plate, and spiral block is slidably arranged in spiral groove, the outside of fixed sleeve is provided with clamping mechanism, the clamping mechanism includes control plate, clamping sleeve, limiting rod, limiting plate, arc slot and round hole, control plate is rotatably sleeved on the outside of fixed sleeve, clamping sleeve is slidably sleeved on the outside of fixed sleeve, limiting rod is connected on one side of clamping sleeve, limiting plate is arranged on limiting rod, arc slot is formed on control plate, and round hole is formed in one end of arc slot.

[0010] The utility model further sets up, the outside of handle is sleeved with handle cover.

[0011] The utility model further sets up, one side of sliding block is connected with push spring, and the other side of push spring is connected with clamping plate.

[0012] The utility model further sets up, the outside of limiting rod is sleeved with spring, one end of spring is connected with clamping sleeve, and the other end of spring is connected with control plate in contact mode.

[0013] The utility model further sets up, a plurality of clamping rods are slidably arranged on the side wall of control sleeve, one end of clamping rod is connected with connecting spring, a plurality of clamping grooves are formed in the outside of fixed sleeve, one end of clamping rod is connected with the outer wall of control sleeve through connecting spring, and the other end of clamping rod is inserted into clamping groove.

[0014] The utility model is further configured such that a driven wheel is provided on the outer side of the rotating sleeve, a driving wheel is provided on one side of the driven wheel, a motor and a reducer are provided on the mounting frame, the reducer input end is connected to the motor output end, and the reducer output end is connected to the driving wheel. The configuration of the above components improves power support and reduces manual operation by adjusting the lateral angle.

[0015] The utility model is further configured such that a movable rod is connected to one end of the handle, a lifting rod is slidably provided in the fixed sleeve, a matching frame is connected to one end of the movable rod, and a fixed frame is connected to the top end of the lifting rod. The configuration of the above components can realize flexible movement of the longitudinal angle of the handle.

[0016] The utility model is further configured such that a connecting seat is fixedly provided on one side of the movable rod and the lifting rod, a rotating shaft is provided on the inner side of the connecting seat and the fixed frame, a hydraulic cylinder is connected to one side of the lifting rod through the connecting seat, and a hydraulic rod is connected to one side of the movable rod through the connecting seat, and the other end of the hydraulic rod is connected to the output end of the hydraulic cylinder. The configuration of the above components realizes the adjustment of the longitudinal angle of the handle.

[0017] (3) Beneficial effects

[0018] Compared with the prior art, the present invention provides a handle angle adjustment device for a small agricultural machine, which has the following beneficial effects:

[0019] 1. The rotating device cleverly solves the key technical problem of adjusting the angle of the handle of small agricultural machinery through the innovative coordinated drive design of the motor and reducer. The precise coordination of the mounting frame and the rotating sleeve, combined with the coordinated transmission of the driving wheel and the driven wheel, not only realizes the flexible adjustment of the handle in the lateral angle, but also significantly improves the smoothness and accuracy of the adjustment. The coordination of components such as the hydraulic cylinder, hydraulic rod and connecting seat realizes the adjustment of the longitudinal angle of the handle. This device breaks through the limitations of the fixed structure of traditional small agricultural machinery handles, provides operators with a more user-friendly operating experience, effectively reduces work fatigue, improves the operating comfort and work efficiency of agricultural machinery, and completely revolutionizes the technical paradigm of small agricultural machinery handle angle adjustment.

[0020] 2. The adjustment device constructs a stepless adjustment system for the handle height through the coordinated design of precise spiral grooves, adapter blocks, control sleeves and spiral blocks. The linkage mechanism of the control sleeve, connecting plate and spiral block can achieve smooth and stepless adjustment of the handle height. Compared with the traditional simple adjustment mechanism, this device not only significantly improves the flexibility of adjustment, but also gives the system the ability to dynamically adapt to the height requirements of different operators, thereby improving the comfort and safety of small agricultural machinery operation.

[0021] 3、The key problem of position stability of the adjusting device is solved innovatively by the precise cooperation of the components such as the control plate, the clamping sleeve, the limiting rod, the limiting plate, the arc-shaped groove and the round hole, when the handle height and angle adjustment is completed, the clamping mechanism can reliably lock the position of each component, prevent accidental changes of parameters caused by external vibration or ground bumping, the cooperative design of the spring, the limiting rod and the control plate not only ensures the height stability of the adjusting structure, but also significantly improves the convenience and reliability of the adjusting operation, compared with the traditional loose and variable adjusting device, the clamping mechanism realizes the accurate locking and keeping of the adjusting parameters, completely eliminates the inconvenience caused by unstable structure, and provides more reliable technical support for the small agricultural machine handle adjustment. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a whole structure schematic view of a small agricultural machine handle angle adjusting device in the utility model;

[0023] Figure 2 It is a whole structure schematic view of a small agricultural machine handle angle adjusting device in the utility model; Figure 1 It is a local enlarged structure schematic view of A in the utility model;

[0024] Figure 3 It is a local enlarged structure schematic view of B in the utility model; Figure 1 It is a local enlarged structure schematic view of B in the utility model;

[0025] Figure 4 It is a sectional structure schematic view of the adjusting device and the clamping mechanism part in the utility model;

[0026] Figure 5 It is a local enlarged structure schematic view of C in the utility model; Figure 4 It is a local enlarged structure schematic view of C in the utility model;

[0027] Figure 6 It is a local enlarged structure schematic view of D in the utility model; Figure 4 It is a local enlarged structure schematic view of D in the utility model;

[0028] Figure 7 It is a structure schematic view of the control sleeve and the adaptive sleeve part in the utility model.

[0029] In the figure: 1, small farm machine; 2, handle; 3, mounting frame; 4, rotating plate; 5, rotating sleeve; 6, spiral groove; 7, adapter block; 8, control sleeve; 9, adapter sleeve; 10, connecting plate; 11, fixed sleeve; 12, adapter slot; 13, sliding block; 14, spiral block; 15, control board; 16, clamping sleeve; 17, limiting rod; 18, limiting plate; 19, arc-shaped groove; 20, round hole; 21, handle sleeve; 22, push spring; 23, clamping plate; 24, spring; 25, clamping rod; 26, connecting spring; 27, clamping groove; 28, driven wheel; 29, driving wheel; 30, motor; 31, speed reducer; 32, movable rod; 33, lifting rod; 34, matching frame; 35, fixed frame; 36, connecting seat; 37, rotating shaft; 38, hydraulic cylinder; 39, hydraulic rod. DETAILED DESCRIPTION

[0030] It should be noted that the embodiments and features in the embodiments in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0031] It should be noted that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as generally understood by those skilled in the art to which the present application belongs.

[0032] In the present application, unless otherwise specified, the directions used such as "up, down" are generally with respect to the directions shown in the drawings, or with respect to the vertical, perpendicular or gravitational direction; similarly, for the convenience of understanding and description, "left, right" are generally with respect to the left and right shown in the drawings; "inner, outer" refer to the inner and outer with respect to the contour of each component itself, but the above directional words are not used to limit the present application.

[0033] Please refer to Figures 1-7The utility model provides a small agricultural machine handle angle adjusting device, including small agricultural machine 1, one side of small agricultural machine 1 is equipped with handle 2, one side of small agricultural machine 1 is provided with rotating device, rotating device includes mounting bracket 3, rotating plate 4 and rotating sleeve 5, mounting bracket 3 is detachably arranged at one side of small agricultural machine 1, rotating plate 4 is fixedly connected at the top of rotating sleeve 5, and rotating sleeve 5 is rotatably arranged on mounting bracket 3, and adjusting device is installed on rotating plate 4, and adjusting device includes helical groove 6, adaptation piece 7, control sleeve 8, adaptation sleeve 9, connecting plate 10, fixed sleeve 11, adaptation groove 12, sliding block 13 and helical block 14, helical groove 6 is set up at the outside of adaptation sleeve 9, adaptation piece 7 is slidably arranged in adaptation groove 12, control sleeve 8 is rotatably sleeved at the outside of fixed sleeve 11, adaptation sleeve 9 is sleeved at the outside of fixed sleeve 11, connecting plate 10 is connected at one side of control sleeve 8, fixed sleeve 11 is fixedly connected at one side of rotating plate 4, adaptation groove 12 is set up at the inside of adaptation sleeve 9, sliding block 13 is connected at one side of adaptation piece 7, helical block 14 is fixedly arranged at one side of connecting plate 10, and helical block 14 is slidably arranged in helical groove 6, and the outside of fixed sleeve 11 is provided with clamping mechanism, and clamping mechanism includes control plate 15, clamping sleeve 16, limiting rod 17, limiting plate 18, arc slot 19 and round hole 20, control plate 15 is rotatably sleeved at the outside of fixed sleeve 11, clamping sleeve 16 is slidably sleeved at the outside of fixed sleeve 11, limiting rod 17 is connected at one side of clamping sleeve 16, limiting plate 18 is arranged on limiting rod 17, arc slot 19 is set up on control plate 15, and round hole 20 is set up at one end of arc slot 19.

[0034] The outside of handle 2 is sleeved with handle sleeve 21.

[0035] The side of sliding block 13 is connected with push spring 22, and the other side of push spring 22 is connected with clamping plate 23.

[0036] The outside of limiting rod 17 is sleeved with spring 24, one end of spring 24 is connected with clamping sleeve 16, and the other end of spring 24 is connected with control plate 15 in contact mode.

[0037] A plurality of clamping rods 25 are slidably arranged on the side wall of control sleeve 8, one end of clamping rod 25 is connected with connecting spring 26, a plurality of clamping grooves 27 are formed in the outside of fixed sleeve 11, one end of clamping rod 25 is connected with the outer wall of control sleeve 8 through connecting spring 26, and the other end of clamping rod 25 is inserted into clamping groove 27.

[0038] In the embodiment, when the height of the handle 2 needs to be adjusted, first rotate the control plate 15, the control plate 15 will move the arc-shaped slot 19 and the circular hole 20, when the circular hole 20 moves to the position concentric with the limiting rod 17 and the limiting plate 18, push the clamping sleeve 16, the clamping sleeve 16 will slide the limiting rod 17 and the limiting plate 18, at the same time, the clamping sleeve 16 will cooperate with the control plate 15 to extrude the spring 24 sleeved outside the limiting rod 17, when the spring 24 is extruded to the limit, the limiting plate 18 just passes through the circular hole 20 and moves to the other side of the control plate 15, at this time, reverse the control plate 15, the control plate 15 will rotate the arc-shaped slot 19 and the circular hole 20 in the opposite direction, then the limiting rod 17 will slide into the arc-shaped slot 19, at this time, the limiting rod 17 and the limiting plate 18 cooperate to limit the clamping sleeve 16 to one side of the control plate 15, so that the outer end of the clamping rod 25 loses the limitation of the clamping sleeve 16, then rotate the control sleeve 8, the control sleeve 8 will move the clamping rod 25 slidably arranged on the side wall, then the clamping groove 27 side wall extrudes one end of the clamping rod 25, due to the round corner design at the end of the clamping rod 25 and the edge of the clamping groove 27, then one end of the clamping rod 25 will slide out of the clamping groove 27, and the other end of the clamping rod 25 will stretch the connecting spring 26, at the same time, the control sleeve 8 will rotate the screw block 14 through the connecting plate 10, then the screw block 14 will slide along the screw groove 6, due to the cooperation of the adapter block 7, the sliding block 13 and the adapter groove 12 to limit the adapter sleeve 9, the adapter sleeve 9 will not rotate, and due to the special structure design of the screw groove 6 and the screw block 14, then the adapter sleeve 9 will slide the adapter groove 12 and the screw groove 6, due to the inclined structure design of the adapter groove 12 and the adapter block 7, then the adapter block 7 will move the clamping plate 23 outward, then the clamping plate 23 no longer compresses the push spring 22 arranged on one side, so that the push spring 22 gradually resets, when the push spring 22 is completely reset, the clamping plate 23 will move the clamping plate 23 outward through the push spring 22, so that the inner wall of the clamping plate 23 no longer contacts the outer wall of the lifting rod 33, then directly lift the lifting rod 33, so that the lifting rod 33 adjusts the height of the handle 2, after adjusting to the appropriate height, reverse rotate the control sleeve 8, the control sleeve 8 will rotate the clamping rod 25, at the same time, the control sleeve 8 will reverse rotate the screw block 14 through the connecting plate 10, then through the cooperation of the screw block 14 and the screw groove 6, and the limitation of the adapter groove 12, the adapter block 7 and the sliding block 13, then the adapter sleeve 9 will reset the adapter groove 12, then the adapter block 7 will move the sliding block 13 inward, then the sliding block 13 will move the clamping plate 23 inward through the push spring 22, then the inner wall of the clamping plate 23 will contact the outer wall of the lifting rod 33, then the adapter block 7 moves the sliding block 13 to continue sliding, so that the sliding block 13 and the clamping plate 23 cooperate to completely compress the push spring 22, so as to fix the lifting rod 33, at this time, the adapter sleeve 9 is completely reset, and the connecting spring 26 just slides the clamping rod 25 to reset.The end of the clamping rod 25 is reinserted into the original clamping groove 27, and then the control plate 15 is rotated again to move the arc-shaped groove 19 and the circular hole 20, and when the circular hole 20 moves to the position concentric with the limiting plate 18 again, the spring 24 pushes the clamping sleeve 16 to slide and reset, and then the clamping sleeve 16 drives the limiting rod 17 and the limiting plate 18 to reset, and when the spring 24 is fully reset, the control plate 15 is continuously rotated to move the arc-shaped groove 19 and the circular hole 20 to a position not corresponding to the limiting rod 17 and the limiting plate 18, at this time the limiting rod 17 cooperates with the control plate 15 to form stable support for the clamping sleeve 16, preventing the clamping sleeve 16 from sliding, and then the inner wall of the clamping sleeve 16 repositions the outer end of the clamping rod 25, so that the clamping rod 25 cannot move, and then the clamping rod 25 and the clamping groove 27 cooperate to limit the control sleeve 8, preventing the control sleeve 8 from rotating, thereby ensuring the stability of the structure after height adjustment.

[0039] Please refer to Figures 1-4 As a further embodiment of the whole device: the outer side of the rotating sleeve 5 is sleeved with a driven wheel 28, one side of the driven wheel 28 is provided with a driving wheel 29, and the mounting frame 3 is provided with a motor 30 and a speed reducer 31. The input end of the speed reducer 31 is connected with the output end of the motor 30, and the output end of the speed reducer 31 is connected with the driving wheel 29.

[0040] One end of the handle 2 is connected with a movable rod 32, and a lifting rod 33 is slidably arranged in the fixed sleeve 11. One end of the movable rod 32 is connected with a matching frame 34, and the top end of the lifting rod 33 is connected with a fixed frame 35.

[0041] One side of the movable rod 32 and the lifting rod 33 is fixedly provided with a connecting seat 36, and the connecting seat 36 and the inner side of the fixed frame 35 are provided with a rotating shaft 37. One side of the lifting rod 33 is connected with a hydraulic cylinder 38 through the connecting seat 36, and one side of the movable rod 32 is connected with a hydraulic rod 39 through the connecting seat 36. The other end of the hydraulic rod 39 is connected with the output end of the hydraulic cylinder 38.

[0042] More specifically, when the handle 2 angle needs to be adjusted, first the hydraulic cylinder 38 can be opened, then the hydraulic cylinder 38 will push the output end of the hydraulic rod 39 to move, since the matching frame 34 arranged on one side of the movable rod 32 and the fixed frame 35 arranged at the top of the lifting rod 33 are connected through the rotating shaft 37, the top of the hydraulic rod 39 is connected with the connecting seat 36 arranged on one side of the movable rod 32 through the rotating shaft 37, and the bottom of the hydraulic cylinder 38 is connected with the connecting seat 36 arranged on one side of the lifting rod 33 through the rotating shaft 37, then the hydraulic rod 39 will push the connecting seat 36 arranged on one side of the movable rod 32, so that the movable rod 32 drives the handle 2 and the matching frame 34 to rotate along the rotating shaft 37 arranged in the fixed frame 35, thereby realizing the adjustment of the longitudinal angle of the handle 2, after adjusting appropriately, the hydraulic cylinder 38 can be closed, then the motor 30 installed on the mounting frame 3 can be opened according to the requirement, the motor 30 output end drives the driving wheel 29 connected with the output end of the speed reducer 31 to rotate after deceleration through the speed reducer 31, then the driving wheel 29 drives the driven wheel 28 to rotate, so that the driven wheel 28 drives the rotating sleeve 5 arranged inside to rotate on the mounting frame 3, then the rotating sleeve 5 drives the fixed sleeve 11, the lifting rod 33, the movable rod 32 and the handle 2 and other components to move through the rotating plate 4, after adjusting appropriately, the motor 30 can be closed, the setting of the sleeve 21 improves the lifting anti-skid ability and improves the operation feeling.

[0043] In summary, when the height of the handle 2 needs to be adjusted, the control plate 15 is first rotated, which moves the arc-shaped groove 19 and the circular hole 20. When the circular hole 20 moves to a position concentric with the limiting rod 17 and the limiting plate 18, the clamping sleeve 16 is pushed, which slides the limiting rod 17 and the limiting plate 18, and at the same time, the clamping sleeve 16 cooperates with the control plate 15 to extrude the spring 24 outside the limiting rod 17. When the spring 24 is extruded to the limit, the limiting plate 18 just passes through the circular hole 20 and moves to the other side of the control plate 15. At this time, the control plate 15 is reversed, which reverses the arc-shaped groove 19 and the circular hole 20. Then the limiting rod 17 slides into the arc-shaped groove 19. At this time, the limiting rod 17 and the limiting plate 18 cooperate to limit the clamping sleeve 16 to one side of the control plate 15, so that the outer end of the clamping rod 25 loses the limitation of the clamping sleeve 16. Then the control sleeve 8 is rotated, which moves the clamping rod 25 slidingly arranged on the side wall. Then the clamping sleeve 27 side wall extrudes one end of the clamping rod 25. Due to the round design at the edge of the clamping rod 25 and the clamping sleeve 27, one end of the clamping rod 25 slides out of the clamping sleeve 27, and the other end of the clamping rod 25 stretches the connecting spring 26. At the same time, the control sleeve 8 drives the screw block 14 to rotate through the connecting plate 10, and then the screw block 14 slides along the screw groove 6. Due to the special structure design of the screw groove 6 and the screw block 14, the adapter sleeve 9 slides the adapter groove 12 and the screw groove 6. Due to the inclined structure design of the adapter groove 12 and the adapter block 7, the adapter block 7 moves the clamping plate 23 outward, and the clamping plate 23 no longer compresses the push spring 22 on one side, so that the push spring 22 gradually resets. When the push spring 22 is completely reset, the clamping plate 23 moves outward through the push spring 22, so that the inner wall of the clamping plate 23 is no longer in contact with the outer wall of the lifting rod 33. Then directly pull the lifting rod 33 to adjust the height of the handle 2. After adjusting to the appropriate height, the control sleeve 8 is reversed, which rotates the clamping rod 25. At the same time, the control sleeve 8 drives the screw block 14 to reverse through the connecting plate 10. Then through the cooperation of the screw block 14 and the screw groove 6, and the limiting of the adapter groove 12, the adapter block 7 and the sliding block 13, the adapter sleeve 9 resets the adapter groove 12. Then the adapter block 7 moves the sliding block 13 inward, and then the sliding block 13 moves the clamping plate 23 inward through the push spring 22. Then the inner wall of the clamping plate 23 is in contact with the outer wall of the lifting rod 33. Then the adapter block 7 drives the sliding block 13 to continuously slide, so that the sliding block 13 and the clamping plate 23 completely compress the push spring 22, thereby fixing the lifting rod 33. At this time, the adapter sleeve 9 is completely reset, and the connecting spring 26 just slides the clamping rod 25 to reset.The end of the clamping rod 25 is reinserted into the original clamping groove 27, and then the control plate 15 is rotated again to move the arc-shaped groove 19 and the circular hole 20, and when the circular hole 20 moves to the position concentric with the limiting plate 18 again, the spring 24 pushes the clamping sleeve 16 to slide and reset, and then the clamping sleeve 16 drives the limiting rod 17 and the limiting plate 18 to reset, and when the spring 24 is fully reset, the control plate 15 is continuously rotated to move the arc-shaped groove 19 and the circular hole 20 to a position not corresponding to the limiting rod 17 and the limiting plate 18, at this time the limiting rod 17 cooperates with the control plate 15 to form stable support for the clamping sleeve 16, preventing the clamping sleeve 16 from sliding, and then the inner wall of the clamping sleeve 16 repositions the outer end of the clamping rod 25, preventing the clamping rod 25 from moving, and then the clamping rod 25 and the clamping groove 27 cooperate to limit the control sleeve 8, preventing the control sleeve 8 from rotating, thereby ensuring the stability of the structure after height adjustment.

[0044] When the handle 2 needs to be adjusted in angle, the hydraulic cylinder 38 can be opened first, and then the hydraulic cylinder 38 will push the hydraulic rod 39 at the output end to move, because the cooperation frame 34 on one side of the movable rod 32 and the fixed frame 35 at the top of the lifting rod 33 are connected by the rotating shaft 37, the hydraulic rod 39 at the top is connected by the rotating shaft 37 and the connecting seat 36 on one side of the movable rod 32 in the machine box, and the bottom of the hydraulic cylinder 38 is connected by the rotating shaft 37 and the connecting seat 36 on one side of the lifting rod 33, then the hydraulic rod 39 will push the connecting seat 36 on one side of the movable rod 32, so that the movable rod 32 drives the handle 2 and the cooperation frame 34 to rotate along the rotating shaft 37 in the fixed frame 35, thereby realizing the adjustment of the longitudinal angle of the handle 2, and after adjustment, the hydraulic cylinder 38 can be closed, then the motor 30 installed on the mounting frame 3 can be opened according to the demand, the motor 30 at the output end drives the driving wheel 29 connected to the output end of the speed reducer 31 to rotate after speed reduction, then the driving wheel 29 drives the driven wheel 28 to rotate, so that the driven wheel 28 drives the rotating sleeve 5 arranged on the inside to rotate on the mounting frame 3, then the rotating sleeve 5 drives the fixed sleeve 11, the lifting rod 33, the movable rod 32 and the handle 2 to move in horizontal angle through the rotating plate 4, and after adjustment, the motor 30 can be closed, the setting of the sleeve 21 improves the anti-skid ability and improves the operation feeling.

[0045] In all the above-mentioned solutions, the connection between the two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection or other known connection mode, which will not be described here. In the above, whenever there is a fixed connection, welding is preferred. Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A small farm machine handle angle adjusting device, comprising a small farm machine (1), one side of the small farm machine (1) is provided with a handle (2), characterized in that: Small farm machine (1) one side is equipped with rotating device, rotating device includes mounting bracket (3), rotating plate (4) and rotating sleeve (5), rotating plate (4) is connected at the top of rotating sleeve (5), rotating sleeve (5) is rotationally arranged on mounting bracket (3), adjusting device is installed on rotating plate (4), adjusting device includes spiral groove (6), adapter block (7), control sleeve (8), adapter sleeve (9), connecting plate (10), fixed sleeve (11), adapter groove (12), sliding block (13) and spiral block (14), spiral groove (6) is opened in the outside of adapter sleeve (9), connecting plate (10) is connected on one side of control sleeve (8), adapter groove (12) is opened in the inside of adapter sleeve (9), sliding block (13) is connected on one side of adapter block (7), spiral block (14) is arranged on one side of connecting plate (10), the outside of fixed sleeve (11) is provided with clamping mechanism, the clamping mechanism includes control plate (15), clamping sleeve (16), limiting rod (17), limiting plate (18), arc slot (19) and round hole (20), limiting rod (17) is connected on one side of clamping sleeve (16), limiting plate (18) is arranged on limiting rod (17), arc slot (19) is opened on control plate (15), round hole (20) is opened on one end of arc slot (19).

2. The handle angle adjustment device for small farm machines according to claim 1, characterized in that: The outside of the handle (2) is sleeved with a handle sleeve (21).

3. The handle angle adjustment device for small farm machines according to claim 1, characterized in that: The side of the sliding block (13) is connected with a push spring (22), and the other side of the push spring (22) is connected with a clamping plate (23).

4. The handle angle adjustment device for small farm machines according to claim 1, characterized in that: The outside of the limiting rod (17) is sleeved with a spring (24), one end of the spring (24) is connected with the clamping sleeve (16), and the other end of the spring (24) is connected with the control plate (15) in a contact manner.

5. A handle angle adjustment device for small farm machines according to claim 4, characterized in that: A plurality of clamping rods (25) are slidably arranged on the side wall of the control sleeve (8), one end of the clamping rod (25) is connected with a connecting spring (26), a plurality of clamping grooves (27) are formed in the outside of the fixed sleeve (11), one end of the clamping rod (25) is connected with the outer wall of the control sleeve (8) through the connecting spring (26), and the other end of the clamping rod (25) is inserted into the clamping groove (27).

6. A handlebar angle adjustment device for small farm machines according to any one of claims 1 to 5, characterized in that: A driven wheel (28) is sleeved outside the rotating sleeve (5), one side of the driven wheel (28) is provided with a driving wheel (29), a motor (30) and a speed reducer (31) are arranged on the mounting bracket (3), the input end of the speed reducer (31) is connected with the output end of the motor (30), and the output end of the speed reducer (31) is connected with the driving wheel (29).

7. A handle angle adjustment device for small farm machines according to claim 6, characterized in that: One end of the handle (2) is connected with a movable rod (32), a lifting rod (33) is slidably arranged in the fixed sleeve (11), one end of the movable rod (32) is connected with a matching frame (34), and the top end of the lifting rod (33) is connected with a fixed frame (35).

8. A handle angle adjustment device for small farm machines according to claim 7, characterized in that: The movable rod (32) and the lifting rod (33) are fixed with connecting seats (36) on one side, the connecting seats (36) and the inner sides of the fixing frames (35) are provided with rotating shafts (37), one side of the lifting rod (33) is connected with a hydraulic cylinder (38) through the connecting seat (36), one side of the movable rod (32) is connected with a hydraulic rod (39) through the connecting seat (36), and the other end of the hydraulic rod (39) is connected with the output end of the hydraulic cylinder (38).

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