Hydraulic rice seedling transplanting mechanism

Abstract

The application discloses a hydraulic rice transplanter, which comprises a rice transplanter support, a four-bar linkage mechanism, a lifting oil cylinder, a hydraulic rice transplanter motor and a universal drive shaft assembly. The four-bar linkage mechanism is connected with the rice transplanter tail disc through the rice transplanter support. The lifting oil cylinder is arranged on the rice transplanter support and is used for driving the four-bar linkage mechanism. The hydraulic rice transplanter motor is arranged on the rice transplanter support and is connected with the rice transplanter tail disc through the universal drive shaft assembly. The application adopts the hydraulic oil cylinder to drive lifting and the hydraulic motor to drive rice transplanting, and solves the problems of complex traditional mechanical structure, poor environmental adaptability and high energy consumption. The core advantages of the application are as follows: powerful and stable power, accurate and flexible control, strong overload resistance, low maintenance cost, simplified structure, energy saving and environmental protection, and the overall performance and reliability of the rice transplanter are improved.

Description

Technical Field

[0001] This application belongs to the field of agricultural machinery technology, specifically relating to a hydraulic rice transplanting mechanism. Background Technology

[0002] Agricultural rice transplanters achieve automatic seedling transplanting through mechanical structures. The seedling tray conveyor separates the seedlings one by one, which are then precisely picked up by the seedling claws on the rotating transplanting mechanism. Driven by a crank-connecting rod, the machine completes a "seedling-planting-returning" cycle. The tail tray carries the seedlings and controls the planting depth, with the height adjusted by a lifting mechanism. The power system, via an engine and drive shaft, synchronously drives the traveling wheels and transplanting arms, ensuring that seedlings are planted in the paddy field at fixed row spacing, plant spacing, and depth, achieving efficient row planting.

[0003] Traditional mechanical rice transplanters have significant drawbacks in tailstock lifting and power transmission: their lifting mechanisms rely on rigid linkages and gear shifting, resulting in low adjustment precision and sluggish response, easily leading to uneven planting depth; the power system rigidly couples the walking and planting units via multi-stage gears / chains, resulting in energy loss of 10%-15%, which can easily cause engine stalling or overload damage to transmission components when field resistance changes abruptly. Furthermore, the bulky mechanical structure restricts lightweight design, exacerbates paddy field pressure loss, and the lack of an electronic control interface makes precise speed adjustment or intelligent collaborative control difficult. Utility Model Content

[0004] The purpose of this application is to provide a hydraulic rice transplanting mechanism that solves the problems of low adjustment accuracy, high energy loss, and large overall weight of existing rice transplanting mechanisms.

[0005] The objective of this application is achieved through the following technical solution: A hydraulic rice transplanting mechanism includes a rice transplanting bracket, which is connected to a rice transplanting tail plate via a four-bar linkage. The rice transplanting bracket is equipped with a lifting cylinder that drives the four-bar linkage, and a hydraulic rice transplanting motor is also provided on the rice transplanting bracket. The rice transplanting motor is connected to the rice transplanting tail plate via a universal drive shaft assembly.

[0006] Furthermore, the rice transplanter is hinged to the middle of the lifting angle rod, the rear end of the lifting angle rod is hinged to the rice transplanter tail plate, the rice transplanter is hinged to the front end of the lifting connecting rod, and the rear end of the lifting connecting rod is hinged to the rice transplanter tail plate. The rice transplanter, the lifting angle rod, the rice transplanter tail plate, and the lifting connecting rod together form a four-bar linkage mechanism.

[0007] Furthermore, the lifting angle rod is a straight rod and includes at least two rods. A front reinforcing rod is connected between the front ends of the lifting angle rod. A rear cylinder lug is provided on the front reinforcing rod and is hinged to the lifting cylinder. A rear reinforcing rod is connected between the rear ends of the lifting angle rod. A reinforcing longitudinal rod is connected between the rear cylinder lug and the rear reinforcing rod.

[0008] Furthermore, the lifting link is a folding link and includes at least two links, with the lifting link having a bending structure from the front end to the rear end, bending from the outside to the inside.

[0009] Furthermore, the four-bar linkage is arranged symmetrically in two sets along the left rear.

[0010] Furthermore, the rice transplanter is hinged to the front end of the lifting cylinder, and the rear end of the lifting cylinder is hinged to the front end of the lifting angle rod.

[0011] Furthermore, the rice transplanter includes at least two longitudinal support rods, each with a fixed interface. The front end of the longitudinal support rod is connected to the upper end of the lower connecting plate, and a front crossbar is connected between the lower ends of the lower connecting plate. The middle of the front crossbar is provided with a front cylinder lug that is hinged to the lifting cylinder. A lower motor disc is connected between the middle sections of the longitudinal support rods, and a rear crossbar is connected between the rear ends of the longitudinal support rods. The rear crossbar is connected to the lower end of the upper connecting plate, and the lower end of the upper connecting plate is provided with an angle rod lug that is hinged to the lifting angle rod. The upper end of the upper connecting plate is provided with a connecting rod lug that is hinged to the lifting connecting rod.

[0012] Furthermore, the universal drive shaft assembly includes a front drive shaft, a rice transplanter motor connected to the front drive shaft, a front drive shaft connected to a middle drive shaft via a universal coupling, a middle drive shaft connected to a rear drive shaft via a sliding spline structure, and a rear drive shaft connected to the rice transplanter input shaft of the rice transplanter tail plate via a universal coupling.

[0013] Furthermore, the rice transplanting motor is connected to the front drive shaft via a coupling.

[0014] Furthermore, the rice transplanter is equipped with a motor encoder that is opposite to the front drive shaft.

[0015] Furthermore, the rice transplanter is equipped with a pull-wire sensor that is connected to the float plate of the rice transplanter tail plate.

[0016] The beneficial effects of this application are: (1) Strong power and high efficiency: The hydraulic cylinder directly drives the lifting and lowering, with a large thrust to overcome the resistance of mud and ensure stable lifting and lowering without jamming; the hydraulic motor drives the transplanting, providing constant torque and stepless speed adjustment, accurately adapting to different seedlings and achieving a high transplanting qualification rate.

[0017] (2) Reliable, durable and highly adaptable: The hydraulic system can be built-in overload protection and automatically release pressure when encountering obstruction, greatly reducing component damage; the closed circuit can effectively isolate mud, water and weed pollution, with a low failure rate, and is especially suitable for harsh paddy field environments.

[0018] (3) Precise control and flexible operation: The hydraulic cylinder lifting stroke control is highly accurate, and the transplanting depth can be dynamically and precisely adjusted to meet the needs of different crops; the hydraulic motor and the lifting cylinder are controlled in tandem to optimize the transplanting action cycle and improve work efficiency.

[0019] (4) Energy saving and easy maintenance: Significantly reduces the overall energy consumption of the system, the hydraulic modules (cylinders and motors) are independent, and replacement is quick and convenient after damage, resulting in low maintenance costs.

[0020] (5) Optimized structure and environmentally friendly: The flexible layout of hydraulic pipelines simplifies the mechanical structure, reduces the weight of the whole machine, and increases the seedling load; the hydraulic system effectively absorbs the impact, resulting in low vibration and noise of the whole machine and improved operating comfort.

[0021] The aforementioned main solution and its various further alternatives can be freely combined to form multiple solutions, all of which are solutions that can be adopted and claimed in this application; furthermore, the (non-conflicting alternatives) can also be freely combined with each other and with other alternatives. Those skilled in the art, after understanding this solution, will realize from the prior art and common general knowledge that there are many combinations, all of which are technical solutions to be protected in this application, and will not be exhaustively listed here. Attached Figure Description

[0022] Fig. 1 This is a three-dimensional structural view of this application.

[0023] Fig. 2 This is the main view of the structure of this application.

[0024] Fig. 3 This is a top view of the structure of this application.

[0025] In the diagram: 1-transplanting bracket, 2-lifting cylinder, 3-lifting angle rod, 4-transplanting tail plate, 5-lifting connecting rod, 6-transplanting motor, 7-coupling, 8-front drive shaft, 9-universal coupling, 10-middle drive shaft, 11-sliding spline structure, 12-rear drive shaft, 13-transplanting input shaft. Detailed Implementation

[0026] The present application will be further described below with reference to specific embodiments and accompanying drawings.

[0027] refer to Figs. 1-3 As shown, a hydraulic rice transplanting mechanism includes a rice transplanting bracket 1, a lifting cylinder 2, a rice transplanting tail plate 4, a rice transplanting motor 6, a four-bar linkage, and a universal drive shaft assembly.

[0028] The rice transplanter bracket 1 serves as the main frame, used for the installation and fixation of other mechanical components, and can also be installed and fixed on the front walking chassis mechanism. The rice transplanter bracket 1 is connected to the rice transplanter tail plate 4 through a four-bar linkage mechanism. The rice transplanter bracket 1 is equipped with a lifting cylinder 2 that drives the four-bar linkage mechanism. That is, the lifting cylinder 2 is powered by hydraulic pressure, and the lifting cylinder 2 provides the power for lifting and lowering, which drives the four-bar linkage mechanism to move, thereby driving the rice transplanter tail plate 4 to lift and lower synchronously to adjust the planting depth.

[0029] The rice transplanter support 1 is equipped with a hydraulic rice transplanter motor 6. The rice transplanter motor 6 is connected to the rice transplanter tail plate 4 via a universal drive shaft assembly. Hydraulic power is supplied to the rice transplanter motor 6, which transmits torque to the universal drive shaft assembly. The universal drive shaft assembly has a self-adjusting function, compensating for the torque in direction and length before finally transmitting it to the rice transplanter tail plate 4, which then drives the mechanism on the rice transplanter tail plate 4 to perform the rice transplanting operation. The rice transplanter tail plate 4 is a conventional piece of machinery and is not the focus of this application; therefore, it will not be described in detail here.

[0030] This application employs hydraulic cylinders to drive lifting and hydraulic motors to drive transplanting, solving the problems of complex structure, poor environmental adaptability, and high energy consumption inherent in traditional machinery. Its core advantages are: strong and stable power, precise and flexible control, strong overload resistance, low maintenance costs, simplified structure, and energy efficiency, significantly improving the overall performance and reliability of the rice transplanter.

[0031] The rice transplanter 1 includes at least two support longitudinal rods, preferably two rectangular tubes arranged symmetrically on the left and right. The support longitudinal rods are provided with fixed interfaces, preferably several universal bolt holes arranged along the length direction, so as to realize the whole rice transplanter 1 is installed on the front walking chassis mechanism.

[0032] The front end of the longitudinal member of the support is welded to the upper end of the lower connecting plate, and the lower ends of the lower connecting plates are welded together with a front crossbar, which is preferably a rectangular tube. The rear ends of the longitudinal members of the support are welded together with a rear crossbar, which is preferably a rectangular tube. Thus, the longitudinal members of the support, the lower connecting plate, the front crossbar, and the rear crossbar together form a solid rectangular frame.

[0033] A front cylinder lug is welded to the middle of the front crossbar and hinged to the lifting cylinder 2. A lower motor plate is welded between the middle of the longitudinal bars of the bracket. The rice transplanter motor 6 is fixedly installed on the lower motor plate by bolts. The rear crossbar is welded to the lower end of the upper connecting plate. The lower end of the upper connecting plate is provided with an angle rod lug hinged to the lifting angle rod 3. The upper end of the upper connecting plate is provided with a connecting rod lug hinged to the lifting connecting rod 5.

[0034] The four-bar linkage includes a transplanting bracket 1, a lifting angle rod 3, a transplanting tail plate 4, and a lifting connecting rod 5. The transplanting bracket 1 is hinged to the middle of the lifting angle rod 3 via a pin, the rear end of the lifting angle rod 3 is hinged to the transplanting tail plate 4 via a pin, the transplanting bracket 1 is hinged to the front end of the lifting connecting rod 5 via a pin, and the rear end of the lifting connecting rod 5 is hinged to the transplanting tail plate 4 via a pin. The transplanting bracket 1, the lifting angle rod 3, the transplanting tail plate 4, and the lifting connecting rod 5 together form a four-bar linkage.

[0035] The front cylinder lug of the rice transplanter 1 is hinged to the front end of the lifting cylinder 2 via a pin, and the rear end of the lifting cylinder 2 is hinged to the rear cylinder lug of the front end of the lifting rod 3 via a pin. That is, through the hinged support of the lifting rod 3 and the lifting connecting rod 5, the rice transplanter tail plate 4 can move up and down relative to the rice transplanter 1. Specifically, the lifting cylinder 2 drives the lifting rod 3 to swing hingedly, and the lifting connecting rod 5 swings accordingly, thus realizing the raising and lowering of the rice transplanter tail plate 4. Two sets of four-bar linkages are symmetrically arranged along the left rear to ensure the stability and reliability of the raising and lowering movement.

[0036] The lifting angle rod 3 is a straight rod and includes at least two rods, preferably two rectangular tubes arranged symmetrically on the left and right. A front reinforcing rod is welded to the front end of the lifting angle rod 3. The front reinforcing rod is provided with a rear cylinder lug that is hinged to the lifting cylinder 2. A rear reinforcing rod is connected to the rear end of the lifting angle rod. A reinforcing longitudinal rod is connected between the rear cylinder lug and the rear reinforcing rod. Through multiple reinforcing rods at the front and rear, the actively driven lifting angle rod 3 is structurally strengthened to ensure the support and driving capability for the rice transplanting tail plate 4.

[0037] The lifting link 5 is a folding rod and includes at least two rods, preferably two rectangular tubes arranged symmetrically on the left and right. The lifting link 5 has a bending structure from the front end to the rear end, which is used to center the position of the rice transplanting tail plate 4 and prevent the rice transplanting tail plate 4 from swaying left and right.

[0038] The universal drive shaft assembly includes a coupling 7, a front drive shaft 8, a universal coupling 9, a middle drive shaft 10, a sliding spline structure 11, a rear drive shaft 12, a transplanting input shaft 13, and a motor encoder. The transplanting motor 6 is connected to the front drive shaft 8 via the coupling 7. The front drive shaft 8 is connected to the middle drive shaft 10 via the universal coupling 9. The middle drive shaft 10 is connected to the rear drive shaft 12 via the sliding spline structure 11. The rear drive shaft 12 is connected to the transplanting input shaft 13 of the transplanting tail plate 4 via the universal coupling 9. The two universal couplings 9 allow for adaptive adjustment of the torque direction, and the sliding spline structure 11 allows for adaptive adjustment of the torque length, ensuring that the transplanting tail plate 4 receives stable and reliable power in different positions.

[0039] The rice transplanter bracket 1 is equipped with a motor encoder opposite to the front drive shaft 8. Preferably, an L-shaped mounting plate is fixed to the rear crossbar of the rice transplanter bracket 1 by bolts, and the motor encoder is mounted on the L-shaped mounting plate. The motor encoder is used to collect the rotational speed of the rice transplanter motor 6. At the same time, a rear wheel motor encoder is configured to collect the rear wheel speed. The two encoders input the speed data into the controller. By comparing the two sets of speed data, the controller appropriately controls the opening size of the motor solenoid valve to adjust the rice transplanting spacing.

[0040] The rice transplanter support 1 is equipped with a pull-wire sensor that is connected to the float of the rice transplanter tail plate 4. Specifically, the pull-wire sensor is installed and fixed on the reinforcing longitudinal rod of the lifting angle rod 3 and is used to measure the vertical movement of the float of the rice transplanter tail plate 4.

[0041] The foregoing basic examples and their further alternative examples can be freely combined to form multiple embodiments, all of which are embodiments that can be adopted and claimed in this application. In the scheme of this application, each alternative example can be arbitrarily combined with any other basic example and alternative example.

[0042] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A hydraulic rice transplanting mechanism, comprising a rice transplanting support (1), characterized in that: The rice transplanter bracket (1) is connected to the rice transplanter tail plate (4) through a four-bar linkage mechanism. The rice transplanter bracket (1) is equipped with a lifting cylinder (2) that drives the four-bar linkage mechanism. The rice transplanter bracket (1) is equipped with a hydraulic rice transplanter motor (6). The rice transplanter motor (6) is connected to the rice transplanter tail plate (4) through a universal drive shaft assembly.

2. The hydraulic rice transplanting mechanism according to claim 1, characterized in that: The rice transplanter (1) is hinged to the middle of the lifting angle rod (3), the rear end of the lifting angle rod (3) is hinged to the rice transplanter tail plate (4), the rice transplanter (1) is hinged to the front end of the lifting link (5), and the rear end of the lifting link (5) is hinged to the rice transplanter tail plate (4). The rice transplanter (1), the lifting angle rod (3), the rice transplanter tail plate (4) and the lifting link (5) together form a four-bar linkage mechanism.

3. The hydraulic rice transplanting mechanism according to claim 2, characterized in that: The lifting angle rod (3) is a straight rod and includes at least two rods. A front reinforcing rod is connected between the front ends of the lifting angle rod (3). A rear cylinder lug is provided on the front reinforcing rod and is hinged to the lifting cylinder (2). A rear reinforcing rod is connected between the rear ends of the lifting angle rod. A reinforcing longitudinal rod is connected between the rear cylinder lug and the rear reinforcing rod.

4. The hydraulic rice transplanting mechanism according to claim 2 or 3, characterized in that: The lifting link (5) is a folded link and includes at least two links. The lifting link (5) has a bending structure from the front end to the rear end.

5. The hydraulic rice transplanting mechanism according to claim 2, characterized in that: The four-bar linkage is arranged in two sets symmetrically along the left rear.

6. The hydraulic rice transplanting mechanism according to claim 2, characterized in that: The rice transplanter (1) is hinged to the front end of the lifting cylinder (2), and the rear end of the lifting cylinder (2) is hinged to the front end of the lifting rod (3).

7. The hydraulic rice transplanting mechanism according to claim 1 or 6, characterized in that: The rice transplanter (1) includes at least two support rods. The support rods are provided with fixed interfaces. The front end of the support rod is connected to the upper end of the lower connecting plate. The lower end of the lower connecting plate is connected to the front crossbar. The middle of the front crossbar is provided with a front cylinder lug that is hinged to the lifting cylinder (2). The middle of the support rods is connected to the lower motor plate. The rear end of the support rods is connected to the rear end of the support rods. The rear end crossbar is connected to the lower end of the upper connecting plate. The lower end of the upper connecting plate is provided with an angle rod lug that is hinged to the lifting angle rod (3). The upper end of the upper connecting plate is provided with a connecting rod lug that is hinged to the lifting connecting rod (5).

8. The hydraulic rice transplanting mechanism according to claim 1, characterized in that: The universal drive shaft assembly includes a front drive shaft (8), a rice transplanter motor (6) connected to the front drive shaft (8), the front drive shaft (8) connected to the middle drive shaft (10) via a universal coupling (9), the middle drive shaft (10) connected to the rear drive shaft (12) via a sliding spline structure (11), and the rear drive shaft (12) connected to the rice transplanter input shaft (13) of the rice transplanter tail plate (4) via a universal coupling (9).

9. The hydraulic rice transplanting mechanism according to claim 8, characterized in that: The rice transplanter bracket (1) is equipped with a motor encoder opposite to the front drive shaft (8).

10. The hydraulic rice transplanting mechanism according to claim 8 or 9, characterized in that: The rice transplanter (1) is equipped with a pull-wire sensor that is connected to the float plate of the rice transplanter tail plate (4).

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