Safe oil drainage device for rice transplanting arm of rice transplanter
By adding an oil drain valve to the shell of the transplant arm of the high-speed transplanter, the pressure and oil and gas leakage caused by excessive filling of lubricant oil and high-frequency actions are solved, ensuring the normal operation of the machine.
Patent Information
- Application Number
- CN202422338295.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-09-25
AI Technical Summary
The high-speed rice transplanter works for a long time in complex environments, which leads to an increase in the pressure of lubricating oil, which may lead to leakage of the oil injection port, damage to the seal, and affect the normal operation of the machine.
The oil drain valve is added to the shell of the transplanting arm, and the excessive lubricating oil and the pressure generated by the crank rocker mechanism and cam mechanism are leaked out to avoid leakage problems caused by excessive pressure. At the same time, the oil drain valve is equipped with an oil seal ring to block external foreign objects and prevent debris from pouring back.
It effectively solves the pressure and oil and gas leakage caused by excessive filling of lubricant oil and high-frequency operations, avoids damage to the oil injection port, and ensures the normal operation of the high-speed rice transplanter.
Smart Images
Figure CN222992654U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a safety oil drainage device for a transplanter arm, belonging to the technical field of transplanter machinery. Background Art
[0002] High-speed transplanters are important agricultural machinery. After the transplanter inserts the transplanter needles into the paddy field, it grabs a fixed amount of seedlings to complete the transplanting process. The planting mechanism of a rice transplanter is a combination of a crank-rocker mechanism and a cam mechanism. The crank rotates driven by power, causing the planting mechanism to move along a fixed trajectory; the seedling needles (separating needles) of the planting mechanism are fixed at the front end of the push rod of the transplanter arm, and a cam mechanism is also matched with the crankshaft in the housing of the transplanter arm; the cam rotates driven by an external force, and the planting mechanism continuously moves along a fixed trajectory to pick up seedlings. When entering the soil, the pusher then pushes the seedlings into the soil to complete the process of picking up and planting seedlings. Since the seedling needles of the planting mechanism need to act at a high frequency, the crank-rocker mechanism and the cam mechanism in the housing of the transplanter arm also need to act at a high frequency. Before the transplanter works, the housing of the transplanter arm needs to be filled with lubricating oil; the lubricating oil is filled through the oil filling port on the housing of the transplanter arm. The problems existing in the prior art are as follows: Due to the particularly complex working environment of the transplanter, the transplanter arm works in muddy water for a long time. Therefore, a large amount of lubricating oil has to be filled every day to protect it. However, it is possible to overfill the lubricating oil, and a channel is needed for external leakage; in addition, the high-frequency operation of the crank-rocker mechanism and the cam mechanism increases the lubricating oil pressure in the housing of the transplanter arm. If there is no special channel for external leakage, the generated pressure and gas will leak through the oil filling port, bursting seals such as the oil seal of the oil filling port, resulting in the entire high-speed transplanter being unable to operate normally. Content of the Utility Model
[0003] The purpose of the utility model is to provide a safety oil drainage device for a transplanter arm. An oil drain valve is added to the housing of the transplanter arm, and the overfilled lubricating oil, as well as the pressure and oil-gas generated by the high-frequency operation of the crank-rocker mechanism and the cam mechanism, can be externally drained through the oil drain valve; at the same time, the oil drain valve is configured with an oil seal ring to block external foreign objects and prevent debris from flowing back into the housing of the transplanter arm, ensuring the normal operation of the high-speed transplanter and solving the above technical problems existing in the prior art.
[0004] The technical solution of the utility model is as follows:
[0005] A safety oil drainage device for a transplanter arm includes a transplanter arm, an oil drain valve, a rear housing, a front housing, an oil filling nozzle, a spring, a crank-rocker mechanism, and a cam mechanism. An oil filling nozzle and an oil drain valve are provided on the housing of the transplanter arm. The housing of the transplanter arm includes a rear housing and a front housing that are interconnected. A spring is arranged in the rear housing, and a crank-rocker mechanism and a cam mechanism are arranged in the front housing.
[0006] The oil drain valve can be made integrally with the oil filling nozzle and installed on the transplanter arm housing together; the oil drain valve and the oil filling nozzle can also be of a split structure and installed on the transplanter arm housing separately.
[0007] The oil drain valve includes an oil drain valve body, a valve core and an oil seal ring. The inner cavity of the oil drain valve body is a through front cavity and a rear cavity. The valve core is in interference fit with the inner cavity of the oil drain valve body. The valve core is provided with an oil drain channel connecting the front cavity and the rear cavity. The outer end of the rear cavity is an oil seal mounting hole. The outer ring of the oil seal ring is installed in the oil seal mounting hole by interference fit, and the inner ring of the oil seal ring is in interference fit with the end of the valve core.
[0008] The oil seal ring is a rubber ring, and an oil seal skeleton is provided inside the outer ring.
[0009] The outer ring of the oil seal ring is adhesively fixed in the oil seal mounting hole.
[0010] The valve core is composed of a valve core column and a valve core head. The valve core column is provided with an oil drain channel connecting the front cavity and the rear cavity. The valve core head is in interference fit with the inner ring of the oil seal ring.
[0011] By adopting the present utility model, when too much lubricating oil is filled in the transplanter arm housing or the pressure needs to be released when the pressure increases, when the internal pressure is greater than the elastic force of the oil seal ring, the inner ring of the oil seal ring that closes the valve core can be squeezed and deformed through the oil drain channel. After deformation, a gap appears between the oil seal and the valve core, and the lubricating oil in the transplanter arm housing leaks out through the oil drain channel and this gap, avoiding bursting the oil filling nozzle. When the internal pressure is less than the elastic force of the oil seal ring, the deformed oil seal restores and closes the valve core again, and the oil drain channel is closed. Since the pressure in the transplanter arm housing is much less than the elastic force of the oil seal skeleton inside the outer ring of the oil seal ring, the oil seal ring will not be pushed off during the oil drain process. The outer ring of the oil seal ring can also be adhesively fixed in the oil seal mounting hole, which can further ensure that the oil seal ring will not fall off. The fixing point of the oil seal ring of the present utility model is between the outer ring and the oil seal mounting hole, which not only avoids the oil seal ring from falling off but also prevents foreign matters from flowing back into the transplanter arm housing.
[0012] The beneficial effects of the present utility model: An oil drain valve is added to the transplanter arm housing, and the overfilled lubricating oil as well as the pressure and oil-gas generated by the high-frequency operation of the crank-rocker mechanism and the cam mechanism can all leak out through the oil drain valve; at the same time, the oil drain valve is configured with an oil seal ring to block external foreign matters and prevent foreign matters from flowing back into the transplanter arm housing, ensuring the normal operation of the high-speed transplanter. Description of the Drawings
[0013] Figure 1 It is a schematic structural diagram of an embodiment of the present utility model;
[0014] Figure 2 It is a schematic cross-sectional structural diagram of an embodiment of the present utility model;
[0015] Figure 3Schematic diagram of the oil drain valve structure according to an embodiment of the present utility model;
[0016] Figure 4 Exploded view of the oil drain valve according to an embodiment of the present utility model;
[0017] Figure 5 Enlarged schematic view of part A of the oil drain valve according to an embodiment of the present utility model;
[0018] In the figure: transplanting arm 1, oil drain valve 2, rear housing 3, front housing 4, camshaft 5, oil injection nozzle 6, spring 7, crank rocker mechanism 8, cam mechanism 9, valve core column 11, valve core head 12, oil drain valve body 21, valve core 22, oil seal ring 23, oil drain passage 24, oil seal skeleton 25, deformed oil seal 26, oil seal mounting hole 27, rear cavity 28, front cavity 29. Detailed implementation manners
[0019] The present utility model will be further elaborated in detail through the following embodiments.
[0020] An oil drain safety device for the transplanting arm of a transplanter, comprising a transplanting arm 1, an oil drain valve 2, a rear housing 3, a front housing 4, an oil injection nozzle 6, a spring 7, a crank rocker mechanism 8 and a cam mechanism 9. An oil injection nozzle 6 and an oil drain valve 2 are provided on the housing of the transplanting arm 1. The housing of the transplanting arm 1 comprises a rear housing 3 and a front housing 4 that are interconnected. A spring 7 is arranged in the rear housing 3, and a crank rocker mechanism 8 and a cam mechanism 9 are arranged in the front housing 4.
[0021] The oil drain valve 2 can be made into an integral structure with the oil injection nozzle 6 and installed on the housing of the transplanting arm 1 together; the oil drain valve 2 and the oil injection nozzle 6 can also be a split structure and installed on the housing of the transplanting arm 1 respectively.
[0022] The oil drain valve 2 comprises an oil drain valve body 21, a valve core 22 and an oil seal ring 23. The inner cavity of the oil drain valve body 21 is a through front cavity 29 and rear cavity 28. There is an interference fit between the valve core 22 and the inner cavity of the oil drain valve body 21. The valve core 22 is provided with an oil drain passage 24 communicating the front cavity 29 and the rear cavity 28. The outer end of the rear cavity 28 is an oil seal mounting hole 27. The outer ring of the oil seal ring 23 is installed in the oil seal mounting hole 27 through interference fit, and the inner ring of the oil seal ring 23 is in interference fit with the end of the valve core 22.
[0023] The oil seal ring 23 is a rubber ring, and an oil seal skeleton 25 is arranged inside the outer ring.
[0024] The outer ring of the oil seal ring 23 is adhesively fixed in the oil seal mounting hole 27.
[0025] The valve core 22 is composed of a valve core column 11 and a valve core head 12. An oil drain passage 24 communicating the front cavity 29 and the rear cavity 28 is arranged on the valve core column 11. The valve core head 12 is in interference fit with the inner ring of the oil seal ring 23.
[0026] An oil drain valve 2 is provided on the rear housing 3 of the housing of the transplanting arm 1.
[0027] An oil filling nozzle 6 is provided on the front housing 4 of the housing of the transplanting arm 1.
[0028] When the present utility model is adopted, when too much lubricating oil is filled in the housing of the transplanting arm 1 or the pressure increases and needs to be discharged externally, when the internal pressure is greater than the elastic force of the oil seal ring 23, the inner ring of the oil seal ring 23 of the closing valve core 22 can be extruded and deformed through the oil drain channel 24. After deformation, a gap appears between the oil seal 26 and the valve core 22, and the lubricating oil in the housing of the transplanting arm 1 leaks out through the oil drain channel 24 and this gap, avoiding bursting the oil filling nozzle 6. When the internal pressure is less than the elastic force of the oil seal ring 23, the deformed oil seal 26 resumes its original shape and closes the valve core 22 again, and the oil drain channel 24 is closed. Since the pressure in the housing of the transplanting arm 1 is much less than the elastic force of the oil seal skeleton 25 inside the outer ring of the oil seal ring 23, the oil seal ring 23 will not be pushed down during the oil drain process. The outer ring of the oil seal ring 23 can also be adhesively fixed in the oil seal installation hole 27, which can further ensure that the oil seal ring 23 will not fall off. The fixed point of the oil seal ring of the present utility model is between the outer ring and the oil seal installation hole 27, which not only avoids the oil seal ring from falling off but also prevents sundries from flowing back into the housing of the transplanting wall.
Claims
1. A rice transplanter arm safety oil drain device, characterized in that: The invention comprises a rice transplanting arm (1), an oil drain valve (2), a rear housing (3), a front housing (4), an oil injection nozzle (6), a spring (7), a crank rocker mechanism (8) and a cam mechanism (9); the housing of the rice transplanting arm (1) is provided with an oil injection nozzle (6) and an oil drain valve (2); the housing of the rice transplanting arm (1) comprises a rear housing (3) and a front housing (4) which are interconnected; the rear housing (3) is provided with a spring (7); and the front housing (4) is provided with a crank rocker mechanism (8) and a cam mechanism (9).
2. The rice transplanter arm safety oil drain device according to claim 1, characterized in that: The oil drain valve (2) and the oil injection nozzle (6) are manufactured as an integral structure and are installed together on the housing of the transplanting arm (1); or the oil drain valve (2) and the oil injection nozzle (6) are separate structures and are installed separately on the housing of the transplanting arm (1).
3. A rice transplanter arm safety oil drain device according to claim 1 or 2, characterized in that: The oil drain valve (2) comprises an oil drain valve body (21), a valve core (22) and an oil seal ring (23); the inner cavity of the oil drain valve body (21) is a front cavity (29) and a rear cavity (28) which are connected; the valve core (22) and the inner cavity of the oil drain valve body (21) are in interference fit; the valve core (22) is provided with an oil drain passage (24) which is in communication with the front cavity (29) and the rear cavity (28); the outer end of the rear cavity (28) is an oil seal mounting hole (27); the outer ring of the oil seal ring (23) is mounted in the oil seal mounting hole (27) by interference fit; and the inner ring of the oil seal ring (23) is in interference fit with the end of the valve core (22).
4. The safe oil drain device for the transplanting arm of a rice transplanter according to claim 3, characterized in that: The oil seal ring (23) is a rubber ring, and an oil seal skeleton (25) is arranged inside the outer ring.
5. The safe oil drain device for the transplanting arm of a rice transplanter according to claim 3, characterized in that: The outer ring of the oil seal ring (23) is bonded and fixed in the oil seal mounting hole (27).
6. The rice transplanter arm safety oil drain device according to claim 3, characterized in that: The valve core (22) is composed of a valve core column (11) and a valve core head (12); an oil drain channel (24) communicating with the front cavity (29) and the rear cavity (28) is provided on the valve core column (11); the valve core head (12) is interference-fitted with the inner ring of the oil seal ring (23).