Walking wheat harvester

Abstract

The utility model relates to the field of agricultural production, and discloses a walking wheat harvester which comprises a harvester body, the upper surface of the harvester body is fixedly connected with a sleeve, the upper surface of the sleeve is connected with a holding rod in a penetrating and sliding mode, a positioning assembly is arranged in the sleeve, and a protection assembly is arranged on the upper surface of the holding rod. The positioning assembly comprises a rocker, a gear is fixedly connected to the rear surface of the rocker, a tooth groove is formed in the left surface of the holding rod, a round rod is elastically connected to the inner wall of the sleeve through a torsional spring, a hand wheel is fixedly connected to the rear surface of the round rod, and a pawl is fixedly connected to the front surface of the round rod. According to the utility model, the height of the holding rod can be flexibly adjusted, and operators with different heights can conveniently adjust the holding rod to a comfortable height through the synergistic effect of a rocker, a gear, a hand wheel, a pawl and other parts in the positioning assembly, so that the physical fatigue is effectively relieved, and the operation comfort and the working efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the field of agricultural production, and in particular to a hand-held wheat harvester. Background Technology

[0002] In agricultural production, wheat harvesting is a critical and seasonally stressful process. With the advancement of agricultural modernization, small agricultural machinery plays an important role in wheat harvesting, but traditional small wheat harvesters have many shortcomings in terms of ease of operation.

[0003] Early walk-behind wheat harvesters typically used a fixed-height handle design, a design flaw that caused numerous problems in practical applications.

[0004] In some small farms, the handle height is not adjustable. Shorter operators need to raise their hands to operate the traditional hand-held wheat harvester, while taller operators need to bend over. This can cause physical discomfort over time.

[0005] Therefore, a hand-held wheat harvester is proposed to solve the above problems. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides a hand-held wheat harvester, which aims to improve the problem in the prior art where the handle height is not adjustable, making it impossible for the operator to maintain a comfortable position for operation, thus causing discomfort.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a hand-held wheat harvester, comprising a body, a sleeve fixedly connected to the upper surface of the body, a handle slidably connected through the upper surface of the sleeve, a positioning component provided inside the sleeve, a protective component provided on the upper surface of the handle, the positioning component including a rocker arm, a gear fixedly connected to the rear surface of the rocker arm, a toothed groove formed on the left surface of the handle arm, a round rod elastically connected to the inner wall of the sleeve via a torsion spring, a handwheel fixedly connected to the rear surface of the round rod, and a ratchet fixedly connected to the front surface of the round rod.

[0008] As a further description of the above technical solution:

[0009] The protective assembly includes a positioning block, a positioning plate inserted into the upper surface of the grip, a protective cover fixedly connected to the upper surface of the positioning plate, a locking block elastically connected to the inner wall of the positioning plate by a compression spring, and a slot provided on the right surface of the protective cover.

[0010] As a further description of the above technical solution:

[0011] The rocker arm is Z-shaped and is rotatably connected to the front surface of the sleeve.

[0012] As a further description of the above technical solution:

[0013] One end of the torsion spring is fixedly connected to the outer wall of the round rod, and the other end of the torsion spring is fixedly connected to the inner wall of the sleeve. The round rod passes through and is rotatably connected to the rear surface of the sleeve.

[0014] As a further description of the above technical solution:

[0015] The pawl engages with the tooth groove, and the gear engages with the tooth groove.

[0016] As a further description of the above technical solution:

[0017] The positioning block is fixedly connected to the outer wall of the grip bar. There are two sets of positioning blocks, and the two sets of positioning blocks are evenly distributed front and back.

[0018] As a further description of the above technical solution:

[0019] The positioning plate is engaged between the two sets of positioning blocks, and the rear end of the lower surface of the block is set as an inclined surface. The block is engaged with the lower surface of the grip bar.

[0020] As a further description of the above technical solution:

[0021] The locking block is slidably connected to the rear surface of the positioning plate, one end of the compression spring is fixedly connected to the front surface of the locking block, and the other end of the compression spring is fixedly connected to the inner wall of the front side of the positioning plate.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the grip height can be flexibly adjusted. Through the coordinated action of components such as the rocker arm, gear, handwheel, and pawl in the positioning assembly, operators of different heights can easily adjust the grip to a comfortable height, effectively reducing physical fatigue and improving operational comfort and work efficiency.

[0024] 2. In this utility model, the protective component provides effective protection for the workers' hands. In harsh environments such as autumn and winter, the protective cover can block cold wind and moisture, reduce hand discomfort, reduce the risk of operational errors caused by hand problems, and ensure the safe and stable progress of harvesting operations. Attached Figure Description

[0025] Figure 1 This is a front view of the three-dimensional structure of the overall device in this utility model;

[0026] Figure 2This is a three-dimensional structural breakdown diagram of the sleeve and grip in this utility model;

[0027] Figure 3 This is a three-dimensional cross-sectional diagram of the sleeve, grip, and rocker arm in this utility model.

[0028] Figure 4 This is a three-dimensional structural breakdown diagram of the grip, protective cover, and positioning plate in this utility model;

[0029] Figure 5 This is a three-dimensional cross-sectional diagram of the protective cover and positioning plate in this utility model.

[0030] Legend:

[0031] 1. Body; 2. Sleeve; 3. Grip; 41. Rocker; 42. Gear; 43. Handwheel; 44. Round rod; 45. Torsion spring; 46. Pawl; 401. Tooth groove; 51. Protective cover; 52. Positioning plate; 53. Positioning block; 54. Compression spring; 55. Locking block; 501. Slot. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figure 1 - Figure 3 This utility model provides an embodiment of a hand-held wheat harvester, including a body 1. The body 1 is the main body of the hand-held wheat harvester, which is existing technology and can be implemented by those skilled in the art. Since it is existing technology, it will not be described in detail in this case. A sleeve 2 is fixedly connected to the upper surface of the body 1. There are two sets of sleeves 2, which are evenly distributed front and back. A handle 3 is slidably connected through the upper surface of the sleeve 2. The left end of the handle 3 is a handrail for easy gripping. A positioning component is set inside the sleeve 2. The positioning component can flexibly adjust the height of the handle 3 to suit users of different heights. A protective component is set on the upper surface of the handle 3. The protective component can cover the handrail on the handle 3, which can protect the hands of the workers and prevent the workers from getting wet hands and feeling uncomfortable from the wind while working in the field (mostly used in autumn and winter).

[0034] Reference Figure 1 - Figure 3The positioning component includes a rocker arm 41, which is easy to grip. A gear 42 is fixedly connected to the rear surface of the rocker arm 41. Rotating the rocker arm 41 can drive the gear 42 to rotate. The left surface of the grip 3 has a toothed groove 401. Multiple sets of toothed grooves 401 are evenly distributed longitudinally. The inner wall of the sleeve 2 is elastically connected to a round rod 44 through a torsion spring 45. A handwheel 43 is fixedly connected to the rear surface of the round rod 44. A pawl 46 is fixedly connected to the front surface of the round rod 44. The round rod 44, the handwheel 43 and the pawl 46 will rotate synchronously. The upper surface of the pawl 46 is flat and will not move when squeezed. The lower surface of the pawl 46 is inclined and will rotate when squeezed.

[0035] Reference Figure 1 , Figure 4 , Figure 5 The protective component includes a positioning block 53, a positioning plate 52 inserted into the upper surface of the grip 3, a protective cover 51 fixedly connected to the upper surface of the positioning plate 52, and a locking block 55 elastically connected to the inner wall of the positioning plate 52 by a compression spring 54. When the positioning plate 52 moves downward, the locking block 55 will be squeezed by the grip 3. A slot 501 is provided on the right surface of the protective cover 51 to facilitate the passage of devices such as brake cables without affecting the normal use of the device.

[0036] Reference Figure 1 - Figure 3 The rocker arm 41 is Z-shaped and is rotatably connected to the front surface of the sleeve 2. One end of the torsion spring 45 is fixedly connected to the outer wall of the round rod 44, and the other end of the torsion spring 45 is fixedly connected to the inner wall of the sleeve 2. The round rod 44 is rotatably connected to the rear surface of the sleeve 2. When the round rod 44 rotates, it will squeeze the torsion spring 45 to generate a reaction force. The rotating pawl 46 will drive the round rod 44 to rotate and squeeze the torsion spring 45 to generate a reaction force. The pawl 46 and the tooth groove 401 mesh. When rotating, the pawl 46 will disengage from the tooth groove 401 and release the limit. The pawl 46 can limit the tooth groove 401 in one direction. The gear 42 meshes with the tooth groove 401.

[0037] Reference Figure 1 , Figure 4 , Figure 5The positioning block 53 is fixedly connected to the outer wall of the grip 3. Two sets of positioning blocks 53 are provided, evenly distributed front and back. A positioning plate 52 is engaged between the two sets of positioning blocks 53. Two sets of positioning plates 52 are also provided, symmetrically distributed front and back around the center line of the protective cover 51. The rear end of the lower surface of the locking block 55 is set as an inclined surface. When the inclined surface is pressed, the locking block 55 will move forward. When the positioning plate 52 and the grip 3 are fully engaged, the locking block 55 will not be pressed by the grip 3. The locking block 55 is engaged with... The lower surface of the grip 3 can limit the protective cover 51. When it needs to be disassembled later, press the two side blocks 55 at the same time to retract them into the positioning plate 52, and then lift the positioning plate 52. The block 55 passes through and slides on the rear surface of the positioning plate 52. One end of the compression spring 54 is fixedly connected to the front surface of the block 55, and the other end of the compression spring 54 is fixedly connected to the inner wall of the front side of the positioning plate 52. When the block 55 moves forward, it will squeeze the compression spring 54 to generate a reaction force.

[0038] Working principle: When the height of the grip lever 3 needs to be adjusted, if the grip lever 3 needs to be raised, the operator holds the rocker arm 41 and rotates it. The rotating rocker arm 41 will drive the gear 42 to rotate, and the rotating gear 42 will drive the grip lever 3 to move upward. The upward-moving grip lever 3 will press against the inclined surface of the lower surface of the pawl 46, so it will not be blocked by the pawl 46. If the grip lever 3 needs to be lowered, the operator turns the handwheel 43 to drive the round rod 44 and the pawl 46 to rotate, so that the pawl 46 disengages from the tooth groove 401, releasing the limitation on the grip lever 3. Then, the operator holds the grip lever 3 and slowly lowers it. When the height of the grip lever 3 is adjusted to be appropriate, the rocker arm 41 and the handwheel 43 are released. Under the influence of the torsion spring 45, the pawl 46 will engage with the corresponding tooth groove 401, and the height of the grip lever 3 will be able to remain stable to suit operators of different heights.

[0039] In autumn and winter, the positioning plate 52 can be aligned between the two sets of positioning blocks 53 and inserted into the handle 3. When inserted, the inclined surface of the locking block 55 will be squeezed, and the locking block 55 will retract into the positioning plate 52 to release the obstruction. It will also squeeze the compression spring 54 to generate a reaction force. When the positioning plate 52 and the handle 3 are inserted, the squeezing of the locking block 55 will also be released. The reaction force of the compression spring 54 will push the locking block 55 out and lock it under the handle 3, thereby fixing the positioning plate 52 and the protective cover 51. When the personnel use it, the protective cover 51 can protect the personnel's hands. When the protective cover 51 needs to be disassembled later, the locking block 55 is pressed into the positioning plate 52 by hand, and the positioning plate 52 is lifted upward to complete the disassembly.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A walking combine for harvesting cereals, comprising a machine body (1), characterized in that: The upper surface of the body (1) is fixedly connected with a sleeve (2), the upper surface of the sleeve (2) is penetrated and slidably connected with a handle (3), the inside of the sleeve (2) is provided with a positioning assembly, the upper surface of the handle (3) is provided with a protection assembly, the positioning assembly comprises a rocker (41), the rear surface of the rocker (41) is fixedly connected with a gear (42), the left surface of the handle (3) is provided with a gear slot (401), the inner wall of the sleeve (2) is elastically connected with a round rod (44) through a torsional spring (45), the rear surface of the round rod (44) is fixedly connected with a hand wheel (43), and the front surface of the round rod (44) is fixedly connected with a pawl (46).

2. A self-propelled grain harvester according to claim 1, characterised in that: The protection assembly comprises a positioning block (53), the upper surface of the handle (3) is inserted with a positioning plate (52), the upper surface of the positioning plate (52) is fixedly connected with a protective cover (51), the inner wall of the positioning plate (52) is elastically connected with a clamping block (55) through a compression spring (54), and the right surface of the protective cover (51) is provided with a slot (501).

3. A self-propelled grain harvester according to claim 1, wherein: The rocker (41) is Z-shaped, and the rocker (41) is penetrated and rotationally connected to the front surface of the sleeve (2).

4. A self-propelled grain harvester according to claim 1, wherein: One end of the torsional spring (45) is fixedly connected to the outer wall of the round rod (44), the other end of the torsional spring (45) is fixedly connected to the inner wall of the sleeve (2), and the round rod (44) is penetrated and rotationally connected to the rear surface of the sleeve (2).

5. A self-propelled grain harvester according to claim 1 wherein: The pawl (46) and the gear slot (401) are engaged, and the gear (42) and the gear slot (401) are engaged.

6. A self-propelled grain harvester according to claim 2, wherein: The positioning block (53) is fixedly connected to the outer wall of the handle (3), and the positioning block (53) is provided with two groups, and the two groups of positioning blocks (53) are evenly distributed front and back.

7. A self-propelled grain harvester according to claim 2, wherein: The positioning plate (52) is clamped between the two groups of positioning blocks (53), the rear end of the lower surface of the clamping block (55) is provided as an inclined surface, and the clamping block (55) is clamped to the lower surface of the handle (3).

8. A self-propelled grain harvester according to claim 2, wherein: The clamping block (55) is penetrated and slidably connected to the rear surface of the positioning plate (52), one end of the compression spring (54) is fixedly connected to the front surface of the clamping block (55), and the other end of the compression spring (54) is fixedly connected to the inner wall of the front side of the positioning plate (52).

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