A gear shifting operation structure

Abstract

The present invention relates to a gear shifting operation structure, including a second operating lever and a positioning device, wherein the positioning device includes a first positioning plate with a serrated upper end surface, the first positioning plate is rotatably arranged on a vehicle frame through a first rotating shaft, the middle part of the first positioning plate is folded to form a hinge plate, the second operating lever is rotatably arranged on one side of the first positioning plate through the hinge plate, a support plate is also fixed on the second operating lever, the support plate is connected to the first positioning plate through a first spring, a notch is provided at the neutral position on the vehicle frame, the first spring makes the second operating lever always approach the first positioning plate and snap into the notch at the neutral position, and the lower part of the first positioning plate is hinged with a third connecting rod connected to an integral hydraulic transmission device. The structural gear position of the present invention is clearer, and a limit structure is provided when in neutral position.

Description

Technical Field

[0001] The invention belongs to the field of rice transplanter equipment, and in particular relates to a gear shifting operation structure. Background Art

[0002] Rice transplanters are planting machines that plant rice seedlings in paddy fields. There are different types of rice transplanters. According to the state of the seedlings, they are divided into the type of pulling and washing seedlings, the type of seedlings with soil, and the dual-purpose type; according to the power, they are divided into two types: manual transplanters and motorized transplanters; according to the movement characteristics of the seedling separation and transplanting mechanisms, they can be divided into longitudinal rolling direct transplanting, longitudinal swing direct transplanting, and transverse swing direct transplanting; rice transplanters can be divided into walking rice transplanters, motorized rice transplanters, and high-speed rice transplanters. The composition of the planting parts of various transplanters is basically the same. The manual transplanter is composed of a seedling box, a seedling separation and transplanting mechanism, a frame, and a float, etc. The self-propelled motorized transplanter is also equipped with power drive, walking device, and seedling delivery mechanism. The basic working principle of the rice transplanter: the seedlings are placed neatly in the seedling box in a group state, and move horizontally with the seedling box, so that the seedling taker can take a certain number of seedlings one by one. Under the action of the transplanting trajectory control mechanism, the seedlings are inserted into the soil according to agronomic requirements, and the seedling taker then returns to the seedling box along a certain trajectory to take the seedlings.

[0003] The existing rice transplanter adopts stepless speed change, and the gear shifting mechanism generally moves smoothly, and the gear position is not clear and definite, which puts high requirements on the operator, and the gear shifting mechanism does not have any limit device when it is in neutral, which is easy to cause misoperation. Summary of the invention

[0004] In order to solve the above technical problems, an object of the present invention is to provide a gear shifting operation structure, in which the gear positions are clearer and a limit structure is provided when the gear is in neutral.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A shifting operation structure includes a second operating lever and a positioning device, the positioning device includes a first positioning plate with a serrated upper end surface, the first positioning plate is rotatably set on a frame through a first rotating shaft, the middle part of the first positioning plate is folded to form a hinge plate, the second operating lever is rotatably set on one side of the first positioning plate through the hinge plate, a support plate is also fixed on the second operating lever, the support plate and the first positioning plate are connected by a first spring, a notch is provided at an idle position on the frame, the first spring makes the second operating lever always approach the first positioning plate and fit into the notch at the idle position, and the lower part of the first positioning plate is hinged with a third connecting rod connected to an integral hydraulic transmission device.

[0007] As a preferred solution: it also includes a first joystick located on one side of the second joystick, the first joystick is fixed to one end of the first connecting rod and is rotatably arranged on the frame through the first connecting rod, and the other end of the first connecting rod is hinged to the second connecting rod connected to the gearbox through a transition plate.

[0008] As a preferred solution: handles for easy grasping are fixed on the tops of the first joystick and the second joystick.

[0009] A first positioning plate with a serrated upper end surface is fixed to the second operating lever of the present invention. The serrated surface of the positioning plate forms a limit with the frame, and the gear shifting can be quantified according to the number of grids moved by the serrations, making the overall operation simpler. In addition, a spring is provided between the second operating lever and the positioning plate, so that the second operating lever is always close to the first positioning plate. When the second operating lever is in neutral, it can be inserted into the notch to maintain the limit and prevent misoperation. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the shift operating mechanism of the present invention from one angle;

[0011] Figure 2 It is a schematic diagram of the structure of the shift operating mechanism of the present invention from another angle. DETAILED DESCRIPTION

[0012] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0013] like Figure 1 to Figure 2 As shown, the present invention provides a shift operation structure, including a second operating lever 1305 and a positioning device, the positioning device includes a first positioning plate 1306 with a serrated upper end surface, the first positioning plate 1306 is rotatably set on the frame through a first rotating shaft, the middle part of the first positioning plate 1306 is folded to form a hinge plate, the second operating lever 1305 is rotatably set on one side of the first positioning plate 1306 through the hinge plate, and a support plate 1302 is also fixed to the second operating lever 1305, the support plate 1302 and the first positioning plate 1306 are connected by a first spring, a notch is provided at the neutral position on the frame, the first spring makes the second operating lever 1305 always approach the first positioning plate 1306 and fit into the notch at the neutral position, and the lower part of the first positioning plate 1306 is hinged with a third connecting rod 1307 connected to the integral hydraulic transmission device 5.

[0014] As a preferred solution, it also includes a first operating lever 1301 located on one side of the second operating lever 1305, the first operating lever 1301 is fixed to one end of the first connecting rod 1304, and is rotatably arranged on the vehicle frame 2 through the first connecting rod 1304, and the other end of the first connecting rod 1304 is hinged to a second connecting rod 1308 connected to the gearbox 6 through a transition plate. The tops of the first operating lever 1301 and the second operating lever 1305 are both fixed with handles for easy grasping.

[0015] The above description is only a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, which are also considered as the protection scope of the present invention.

Claims

1. A gear shifting operation structure, Features: The invention comprises a second operating lever (1305) and a positioning device, wherein the positioning device comprises a first positioning plate (1306) having a serrated upper end surface, the first positioning plate (1306) being rotatably arranged on a vehicle frame via a first rotating shaft, the middle portion of the first positioning plate (1306) being folded over to form a hinge plate, the second operating lever (1305) being rotatably arranged on one side of the first positioning plate (1306) via the hinge plate, a support plate (1302) being fixed to the second operating lever (1305), the support plate (1302) being connected to the first positioning plate (1306) via a first spring, a notch being arranged at an idle position on the vehicle frame, the first spring causing the second operating lever (1305) to always move closer to the first positioning plate (1306) and to fit into the notch at an idle position, and a third connecting rod (1307) being connected to an integral hydraulic transmission device (5) being hinged at the lower portion of the first positioning plate (1306).

2. A gear shifting operation structure according to claim 1, Features: It also includes a first operating lever (1301) located on one side of the second operating lever (1305), the first operating lever (1301) being fixed to one end of the first connecting rod (1304) and being rotatably arranged on the vehicle frame (2) via the first connecting rod (1304), the other end of the first connecting rod (1304) being hinged to a second connecting rod (1308) connected to the gearbox (6) via a transition plate.

3. A gear shifting operation structure according to claim 2, Features: A handle for easy grasping is fixed on the top of each of the first joystick (1301) and the second joystick (1305).

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