Header height adjusting mechanism of harvester

Abstract

The utility model relates to the field of harvesters, in particular to a header height adjusting mechanism of a harvester. The header height adjusting mechanism of the harvester comprises a header body, the header body is rotatably installed on the harvester through a hinge frame, and an oil cylinder for driving the header body to rotate is further installed between the header body and the harvester. The hinge frame comprises a foot stool, the foot stool is fixed to the harvester through bolts, a first positioning shaft is fixed to the foot stool, and concentric ratchet wheels are further fixed to the two ends of the first positioning shaft. A connecting arm is further fixed to the back side of the header body through a bolt, and the connecting arm is rotationally connected with the first positioning shaft; an auxiliary locking piece is further installed on the connecting arm, the auxiliary locking piece comprises a rotatable clamping plate, and the clamping plate is provided with a plurality of ratchets capable of being fixed to the ratchet wheel in an embedded mode. A clamping plate in the auxiliary locking piece is provided with ratchets which can be fixedly embedded with the ratchet wheel, so that the ratchets are matched with the oil cylinder to support the header, and the oil cylinder is protected.

Description

Technical Field

[0001] This utility model relates to the field of harvesters, and in particular to a harvester header height adjustment mechanism. Background Technology

[0002] A harvester is a type of machinery used in agricultural production, primarily for harvesting the entire plant or parts such as fruits, seeds, stems, leaves, and roots of mature crops. Harvesting machinery mainly employs methods such as cutting, digging, picking, pulling up, and shaking down to harvest.

[0003] The header in a harvester is the main structure that gathers and cuts crop stalks. It is generally hinged to the harvester body, allowing the entire header to rotate vertically. Additionally, a hydraulic cylinder is located between the header and the harvester body. The extension and retraction of this cylinder drives the header to rotate, thus adjusting the distance between the header and the ground.

[0004] However, the following defects and shortcomings still exist in the application implementation process:

[0005] The hydraulic cylinder is the only structure that drives the cutting table to rotate, and it is also used to support the cutting table. This causes the hydraulic cylinder to bear greater pressure and is more prone to deformation, thus resulting in a shorter service life.

[0006] Therefore, it is necessary to provide a new harvester header height adjustment mechanism to solve the above-mentioned technical problems. Utility Model Content

[0007] To solve the above-mentioned technical problems, this utility model provides a harvester header height adjustment mechanism.

[0008] The harvester header height adjustment mechanism provided by this utility model includes a header body, which is rotatably mounted on the harvester via a hinge frame. A hydraulic cylinder for driving the header body to rotate is also installed between the header body and the harvester.

[0009] The articulated frame includes a leg frame, which is bolted to the harvester. A first positioning shaft is fixed on the leg frame, and concentric ratchet wheels are fixed at both ends of the first positioning shaft.

[0010] The back side of the cutting table body is also bolted with a connecting arm, which is rotatably connected to the first positioning axis.

[0011] An auxiliary locking component is also installed on the connecting arm. The auxiliary locking component includes a rotatable locking plate with multiple ratchet teeth that can engage and fix with a ratchet.

[0012] Preferably, the two ends of the hydraulic cylinder are rotatably mounted on the harvester and the header body.

[0013] Preferably, one side of the card plate has an arc-shaped notch, which is adapted to the ratchet so that the ratchet can be embedded inside the arc-shaped notch, and the ratchet teeth are disposed inside the arc-shaped notch.

[0014] Preferably, a second positioning shaft is rotatably connected to the connecting arm, one end of the clamping plate is fixed to the second positioning shaft, a baffle is welded and fixed to the second positioning shaft, and a torsion spring is also sleeved on it. The two ends of the torsion spring abut against the connecting arm and the baffle respectively, and the spring force generated by the torsion spring on the second positioning shaft makes the ratchet on the clamping plate firmly engaged with the ratchet wheel.

[0015] Preferably, there are two sets of card plates, and a connecting frame is fixed between the two sets of card plates. A third positioning shaft is fixed on the connecting frame.

[0016] A fourth positioning shaft is also fixed on the connecting arm, and an electric telescopic rod is installed between the third positioning shaft and the fourth positioning shaft.

[0017] Preferably, the electric telescopic rod and the third and fourth positioning shafts are all rotatably connected.

[0018] Compared with related technologies, the harvester header height adjustment mechanism provided by this utility model has the following advantages:

[0019] This utility model provides a harvester header height adjustment mechanism in which the auxiliary locking component has a latch plate with ratchet teeth that can engage and fix with a ratchet. When the two are engaged, they can also provide support for the entire header, so as to cooperate with the hydraulic cylinder to support the header and protect the hydraulic cylinder, thereby extending the service life of the hydraulic cylinder. Attached Figure Description

[0020] Figure 1 A schematic diagram of a preferred embodiment of the harvester header height adjustment mechanism provided by this utility model;

[0021] Figure 2 As shown in this utility model Figure 1 A structural diagram of the other side;

[0022] Figure 3 This is a schematic diagram of the structure of the auxiliary locking component and the hinge frame connected together as shown in this utility model. Figure 1 ;

[0023] Figure 4 This is a schematic diagram of the structure of the auxiliary locking component and the hinge frame connected together as shown in this utility model. Figure 2 .

[0024] The following are the labeling elements in the diagram: 1. Cutting table body; 2. Hinge frame; 21. Leg; 22. First positioning axis; 23. Connecting arm; 24. Ratchet; 3. Hydraulic cylinder; 4. Auxiliary locking component; 41. Second positioning axis; 42. Clamping plate; 43. Ratchet; 44. Connecting frame; 45. Third positioning axis; 46. Fourth positioning axis; 47. Electric telescopic rod; 48. Stop plate; 49. Torsion spring. Detailed Implementation

[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0029] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0030] Please see Figures 1 to 4 The present invention provides a harvester header height adjustment mechanism, which includes a header body 1, which is rotatably mounted on the harvester via a hinge frame 2, and a hydraulic cylinder 3 for driving the header body 1 to rotate is also installed between the header body 1 and the harvester.

[0031] The articulated frame 2 includes a leg 21, which is bolted to the harvester. A first positioning shaft 22 is fixed on the leg 21, and concentric ratchet wheels 24 are fixed at both ends of the first positioning shaft 22.

[0032] A connecting arm 23 is bolted to the back side of the cutting table body 1, and the connecting arm 23 is rotatably connected to the first positioning shaft 22.

[0033] An auxiliary locking element 4 is also installed on the connecting arm 23. The auxiliary locking element 4 includes a rotatable locking plate 42 with multiple ratchet teeth 43 that can engage and fix with the ratchet 24.

[0034] It should be noted that in this device, the header body 1 is mounted on the harvester via the hinge frame 2, which allows the header body 1 to rotate vertically. The rotation of the header body 1 can adjust the distance between the header body 1 and the ground, thereby making targeted adjustments according to different crops.

[0035] One end of the hydraulic cylinder 3 is installed on the harvester, and the other end is installed on the header body 1. The extension and retraction of the hydraulic cylinder 3 can act on the header body 1, so that the header body 1 can rotate around the hinge point of the hinge frame 2.

[0036] The auxiliary locking component 4 is installed on the hinge frame 2. It includes a rotatable locking plate 42 with ratchet teeth 43. The ratchet teeth 43 can engage with the ratchet 24 on the first positioning shaft 22. In the engaged state, the cutting table body 1 can be supported by the connecting arm 23 to provide synchronous support for the hydraulic cylinder 3, thereby reducing the pressure on the hydraulic cylinder 3 and providing significant protection for the hydraulic cylinder 3 to extend its service life.

[0037] In the embodiments of this utility model, please refer to Figure 1 and Figure 2 The two ends of the hydraulic cylinder 3 are rotatably mounted on the harvester and the header body 1.

[0038] It should be noted that the hydraulic cylinder 3, the harvester, and the header body 1 are all rotatably connected, so they can be adaptively adjusted according to the rotation position of the header body 1.

[0039] In the embodiments of this utility model, please refer to Figure 3 and Figure 4 The plate 42 has an arc-shaped notch on one side, which is adapted to the ratchet 24 so that the ratchet 24 can be embedded inside the arc-shaped notch, and the ratchet tooth 43 is set inside the arc-shaped notch.

[0040] It should be noted that the arc-shaped notch on the plate 42 can better cooperate with the ratchet 24, making the contact between the two more compact. At the same time, this setting can increase the number of ratchet teeth 43 to improve the support effect.

[0041] In the embodiments of this utility model, please refer to Figure 3 and Figure 4 The connecting arm 23 is also rotatably connected to a second positioning shaft 41. One end of the clamping plate 42 is fixed to the second positioning shaft 41. A baffle 48 is welded and fixed to the second positioning shaft 41, and a torsion spring 49 is also sleeved on it. The two ends of the torsion spring 49 abut against the connecting arm 23 and the baffle 48 respectively. The elastic force generated by the torsion spring 49 on the second positioning shaft 41 makes the ratchet 43 on the clamping plate 42 firmly engaged with the ratchet 24.

[0042] It should be noted that the clamping plate 42 is mounted on the second positioning shaft 41, and the second positioning shaft 41 is subjected to the elastic force of the torsion spring 49. Under the action of the elastic force, the clamping plate 42 can press against the ratchet 24, so that the ratchet 43 is engaged with the ratchet 24.

[0043] In the embodiments of this utility model, please refer to Figure 3 and Figure 4 The card plate 42 consists of two sets, and a connecting frame 44 is fixed between the two sets of card plates 42. A third positioning shaft 45 is fixed on the connecting frame 44.

[0044] A fourth positioning shaft 46 is also fixed on the connecting arm 23, and an electric telescopic rod 47 is installed between the third positioning shaft 45 and the fourth positioning shaft 46.

[0045] It should be noted that when the electric telescopic rod 47 extends, it can drive the clamping plate 42 to rotate around the second positioning shaft 41, thereby disengaging the ratchet 43 on the clamping plate 42 from the ratchet 24. After disengagement, the cutting table body 1 can be rotated and adjusted.

[0046] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0047] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A harvester header height adjustment mechanism, comprising a header body (1), the header body (1) being rotatably mounted on the harvester via a hinge frame (2), and a hydraulic cylinder (3) for driving the header body (1) to rotate is further installed between the header body (1) and the harvester, characterized in that: The hinge frame (2) includes a leg (21), which is bolted to the harvester. A first positioning shaft (22) is fixed on the leg (21), and concentric ratchet wheels (24) are fixed at both ends of the first positioning shaft (22). The back side of the cutting table body (1) is also bolted with a connecting arm (23), which is rotatably connected to the first positioning shaft (22); An auxiliary locking element (4) is also installed on the connecting arm (23). The auxiliary locking element (4) includes a rotatable locking plate (42) with a plurality of ratchet teeth (43) that can engage and fix with the ratchet (24).

2. The harvester header height adjustment mechanism of claim 1, wherein, The two ends of the hydraulic cylinder (3) are rotatably mounted on the harvester and the header body (1).

3. The harvester header height adjustment mechanism of claim 1, wherein, The card plate (42) has an arc-shaped notch on one side, which is adapted to the ratchet (24) so ​​that the ratchet (24) can be embedded inside the arc-shaped notch, and the ratchet tooth (43) is set inside the arc-shaped notch.

4. The harvester header height adjustment mechanism of claim 3, wherein, The connecting arm (23) is also rotatably connected to a second positioning shaft (41). One end of the clamping plate (42) is fixed to the second positioning shaft (41). A baffle (48) is welded and fixed to the second positioning shaft (41), and a torsion spring (49) is also sleeved on it. The two ends of the torsion spring (49) abut against the connecting arm (23) and the baffle (48) respectively. The elastic force generated by the torsion spring (49) on the second positioning shaft (41) makes the ratchet (43) on the clamping plate (42) firmly engaged with the ratchet (24).

5. The harvester header height adjustment mechanism of claim 4, wherein, The card plate (42) consists of two sets, and a connecting frame (44) is fixed between the two sets of card plates (42). A third positioning shaft (45) is fixed on the connecting frame (44). A fourth positioning shaft (46) is also fixed on the connecting arm (23), and an electric telescopic rod (47) is installed between the third positioning shaft (45) and the fourth positioning shaft (46).

6. The harvester header height adjustment mechanism of claim 5, wherein, The electric telescopic rod (47), the third positioning shaft (45), and the fourth positioning shaft (46) are all rotatably connected.

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