CN110521359A - A kind of rice transplanter - Google Patents

Abstract

The present invention relates to farm equipment field more particularly to a kind of rice transplanters.In the rice transplanter by profiling regulatory function driving gate valve mode and driving assembly driving gate valve mode combine, control in rice transplanter work and when not working for oil cylinder output quantity is realized using same set of gate valve operating device, with simplified structure, cost is reduced, the advantage of operation difficulty is reduced；And link mechanism is arranged on rice transplanter makes the traction end of lanyard assembly and adjustment axis link, when adjusting the scheme of central kickboard height above by handle, the rotation of adjustment axis drives the traction end of lanyard assembly to synchronize and is adjusted by link mechanism, so as to avoid above-mentioned imitated structure is influenced according to the automatic function of carrying out height adjustment of landform height, adjustment interpolated depths are more convenient.

Description

A kind of rice transplanter

Technical field

The present invention relates to farm equipment field more particularly to a kind of rice transplanters.

Background technique

Rice transplanter is that rice seedling is colonized the planting machinery in paddy field, not only instead of the mistake of artificial transplanting operation Journey, and the effect of improve rice transplanting to a certain extent and transplanting quality, rational close planting is realized, the plant of specification has Conducive to the mechanization of subsequent job.When rice transplanter works, rice shoot is neatly put into seedling case, perillaseed and seedling case with group's state Transverse shifting, making seedling fetching machine, gradually lattice takes a certain number of rice shoots away, rice transplanting track control mechanism effect under, by agronomy It is required that rice shoot is inserted into soil, seedling fetching machine is back to seedling case seedling taking by certain track again.

Sub-power portion and transplanting portion two major parts in high speed saddle type rice transplanter structure, and power part be divided into engine, HST, gearbox, chassis, covering, hydraulic, electric appliance etc..HST, i.e., the English abbreviation of hydrostatic stepless transmission, effect is logical It crosses a set of hydraulic device integrated and changes pumpage to control output revolving speed and the steering of hydraulic motor.Power transmission Route are as follows: engine-HST-gearbox-driving wheel.Interpolating portion is generally divided into gate valve control device, gate valve, oil cylinder, lifting Seedling platform, interpolation device etc.；Wherein, gate valve control device control gate valve operation, further controls oil cylinder output quantity, to adjust seedling platform Lifting, interpolation device carry out interpolation when seedling platform declines state.

In addition, time of the rice transplanter in rice transplanting, since there is hollow on ground, in order to guarantee the survival rate and rice transplanting of rice transplanting Depth needs to be adjusted according to surface state in real time.Therefore, existing rice transplanter is equipped with feeler mechanism to solve above-mentioned ask Topic；As Publication No. " CN204191139U " Chinese utility model patent disclosure in record a kind of rice transplanter profiling machine Structure includes rack, bracket, deep-controlled bracing wire, elevating lever, control valve, floating control plate, elevating control handle, copying control Bar, oil cylinder, guide rod, deep-controlled handle, folded plate, frid, transplanting portion and pontoon.Based on above-mentioned existing scheme, rice transplanter is in work Profiling can be carried out when making according to pontoon, pontoon carries out height adjustment according to landform height is automatic, to control the output of oil cylinder Amount adjusts the height of transplanting portion (seedling platform), finally guarantees that the depth of each rice transplanting is consistent with height, ensure that the survival rate of rice shoot. In addition, interpolated depths required for different types of rice shoot are different, therefore handle can be also set on rice transplanter for adjusting interpolation Depth；But when being adjusted for transplanting depth, need to guarantee the adjustment will not influence above-mentioned feeler mechanism according to landform height from The dynamic function of carrying out height adjustment.It is recorded in second from the bottom section of specification embodiment of such as above-mentioned formerly disclosed patent text: Transplanting portion adjusts the transplanting depth of rice shoot by deep-controlled handle, when deep-controlled handle is stirred, by lever principle, Position of the adjustable pin shaft relative to frid, so as to adjust the position of deep-controlled bracing wire inner core and outer ring, i.e. realization seedling Miao Shen inserts the different sensitivity with transplanting portion when shallow insert.

In addition, the valve of existing control high-speed transplanter seedling platform lifting, function is more single, such as Patent No. 201620440681.8, patent name is the patent document of " high-speed transplanter seedling case elevating mechanism Position of Hydraulic Cylinder control system " " Hydraulic Power Transmission System includes hydraulic pump, 3-position 4-way servo reversing valve, hydraulic cylinder, safety valve for middle disclosure；Hydraulic pump, three Position four-way servo reversing valve, hydraulic cylinder are sequentially connected；Amplification conversion element is signal gain element, the signal control by its gain 3-position 4-way servo reversing valve movement processed, adjusts the position of hydraulic cylinder ", and with reference to the Figure of description 1 of the patent document.

A kind of control rice transplanting for another example recorded in the Chinese invention patent disclosure of Publication No. " CN109779996A " Machine seedling platform lifting multifunction valve, including sequentially connected reversal valve, shuttle valve, hydraulic control one-way valve, shut-off valve, one-way throttle valve and Lift cylinder, the reversal valve are five position and four-way reversing valves, and the first oil outlet of the reversal valve is oily with the first of shuttle valve respectively Mouthful be connected to the working connection of hydraulic control one-way valve, the second oil outlet of the reversal valve respectively with the second hydraulic fluid port of shuttle valve and hydraulic control list It is connected to the secondary hydraulic fluid port of valve, the oil outlet of the shuttle valve is connected with feather valve, is additionally provided on the hydraulic control one-way valve and its pair The throttling relief hole of hydraulic fluid port connection, the throttling relief hole are connect with fuel tank；The reversal valve includes upper raise-position, throttling rising Position, middle position, the lower demotion that throttles and lower demotion, the oil outlet of the one-way throttle valve are connected to a chamber of lift cylinder, described Another chamber of lift cylinder is connected to fuel tank, the lifting of the commutation action control lift cylinder of the reversal valve.

Used Multifunctional valve structure is complicated on the existing rice transplanter that above-mentioned two documents are embodied, integrated level bottom, at This is higher.

For another example a kind of novel control is recorded in the Chinese utility model patent disclosure of Publication No. " CN201766838U " The hydraulic device of transplanting depth of transplanting machine processed, and it is disclosed directly below scheme: including fuel tank body, the fuel tank body front/rear end is fixed with Rotary valve assembly and pump end cap assembly, the gear pump assembly being fixed on pump end cap assembly that is spirally connected are located inside the fuel tank body, institute Stating pump end cap assembly includes a pump end cap and the terminal pad that is fixed thereon, the rear end face of the pump end cap and the fuel tank body It is spirally connected, transmission shaft clearance fit is mounted in the terminal pad；And the rear end face of the terminal pad, the tooth are exposed in its rear end Taking turns pump assembly includes gear pump body, is equipped with a pair of intermeshing driving gear and driven tooth the pump chamber of gear pump body is intracavitary Wheel, being plugged in pump end cap for the rear axle clearance fit of driving gear are fixedly connected with the transmission shaft front end, are mounted on tooth The intracorporal overflow valve of wheel pump is connected to by fabrication hole with the pump chamber chamber.The present apparatus is cheap, reliability with higher and Preferable durability.The rice transplanter for above-mentioned profiling regulatory function with manually or automatically drive the function of adjustment not good Combine, Liang Tao mechanism is needed individually to implement independent function, comparatively, structure is complicated and higher cost, troublesome in poeration.

In addition, with reference to above scheme, the cooperation between the power part and interpolating portion of rice transplanter is as follows, as rice transplanter moves ahead When, interpolating portion work (this state is in farmland interpolated value)；When rice transplanter moves ahead, interpolating portion does not work, and (this state is non-agricultural It walks in field)；When rice transplanter retreats, interpolating portion does not work；When rice transplanter deceleration turns to, interpolating portion does not work.Currently, in high speed On saddle type rice transplanter, the property easy to control of power part is essentially consisted in for the R&D direction of HST operating system；Such as Granted publication Number for " CN204895144U " Chinese utility model patent announce text in record high speed saddle type rice transplanter pedal main transformer Fast operating mechanism, the advance of handle described in scheme and link mechanism control machine retreat switching and the switching of high low speed；Institute State gas pedal and the rotation of link mechanism control HST pump shaft, the revolving speed of hydraulic motor and steering；The gas pedal connects throttle The size of bracing wire control engine throttle.The present invention is by dialling hand-off handle and foot accelerator pedal, by Ji Tao mechanism and handle It combines and realizes main gear change, and then control advance, retrogressing and the speed of travel of rice transplanter.The present invention only needs one Handle hangs up properly shelves, and foot accelerator pedal controls the labor intensity for just mitigating machine hand while improving manipulation simplification.But Existing high speed saddle type rice transplanter is there is no HST operation and interpolation clutch is combined, to simplify operation control.

In conclusion existing rice transplanter is there is also numerous shortcomings, therefore a kind of rice transplanter of new construction.

Summary of the invention

To solve the above-mentioned problems, the purpose of the present invention is to provide a kind of rice transplanter, in the rice transplanter by profiling tune Driving gate valve mode and driving assembly driving gate valve mode in section function combine, and are realized using same set of gate valve operating device Control in rice transplanter work and when not working for oil cylinder output quantity, has and simplifies structure, reduce cost, it is difficult to reduce operation The advantage of degree；And on rice transplanter be arranged link mechanism make lanyard assembly traction end and adjustment axis link, when above by When handle adjusts the scheme of central kickboard height, the rotation of adjustment axis drives the traction end of lanyard assembly synchronous by link mechanism It is adjusted, so as to avoid above-mentioned imitated structure is influenced according to the automatic function of carrying out height adjustment of landform height, adjustment is inserted It is more convenient to be worth depth.

In order to achieve the above purpose, present invention employs technical solutions below:

A kind of rice transplanter, including rack, and it is set to the seedling platform on rear side of the rack, and the driving seedling platform lifting Oil cylinder, the gate valve of the control oil cylinder output quantity, and the gate valve operating device with the driving gate valve；

The gate valve operating device include middle part be connected with the rotary plate of the gate valve and circumferential clocking of turbine rotate first Rotating arm, and can first rotating arm described in unidirectional drive limiting the second rotating arm and driving assembly rotated in range； The first end of second rotating arm and the first end of first rotating arm are pivotally connected, and are connected with tension spring on pivot end；

The seedling platform is equipped with transplanting depth-adjusting device, including seedling platform bracket, and is set on seedling platform bracket Kickboard assembly and the depth is entreated to adjust assembly；It includes the shaft being located on seedling platform bracket that the depth, which adjusts assembly, and driving The handle of the shaft rotation；The center kickboard assembly includes central kickboard, and central kickboard and the shaft pass through first Bar is connected, and central kickboard connects the second end of the second rotating arm by lanyard assembly；It is additionally provided on the seedling platform bracket Link mechanism, shaft are connected by link mechanism with the lanyard assembly；The traction end of the lanyard assembly is rotated with shaft It is adjusted.

By adopting the above technical scheme, which is related to a kind of rice transplanter to the present invention, which includes rack, and The seedling platform being set on rear side of the rack, and the oil cylinder of the driving seedling platform lifting, the control oil cylinder output quantity Gate valve, and the gate valve operating device with the driving gate valve.It wherein, include first rotating arm, the in the gate valve operating device Two rotating arms and driving assembly, wherein the middle part of first rotating arm is connected and synchronous drive rotary valve with the rotary plate of the gate valve Core rotation, and then oil cylinder output quantity is controlled, it is final to control seedling platform height.In this scheme, driving assembly is used and is driven by external force , the manually or electrically driving end of mode, can first rotating arm described in unidirectional drive rotate limiting in range；This driving group Part is for being lifted the height of seedling platform when not working in rice transplanter.The second end of second rotating arm is connected by lanyard assembly Central kickboard assembly is connect, at work, central kickboard assembly is fed back according to surface state seedling machine in real time, the second rotation of traction Arm, while tension spring pulls first rotating arm and the second rotating arm, and first rotating arm is made to maintain initial position, in the second rotation Under arm and tension spring effect, oil cylinder output quantity is adjusted by gate valve, it is final to adjust seedling platform height.The program, by profiling regulatory function In driving gate valve mode and driving assembly driving gate valve mode combine, using same set of gate valve operating device realize in rice transplanting Cost is reduced, the excellent of operation difficulty is reduced with structure is simplified with control when not working for oil cylinder output quantity when machine works Gesture.

And can be by external force in the handle in transplanting depth-adjusting device, handle drives adjustment axis rotates, thus Make central kickboard with adjustment axis axle center, swings certain angle using the first joining beam as swing arm, and then keep central kickboard opposite The height of Yu Miaotai bracket changes, due to the transplanting depth-adjusting device in use, central kickboard is bonded ground, Gu Miaotai The height of interpolating portion on bracket changes, and then adjusts transplanting portion to the transplanting depth of rice shoot.On this basis, such as background It is recorded in work in technology, central kickboard is bonded ground, and landform height is fed back to the lifting of seedling platform by lanyard assembly in real time Control system carries out the adjustment of seedling platform height.And in the program, link mechanism is additionally provided on seedling platform bracket, by the way that joining beam machine is arranged Structure makes the traction end of lanyard assembly and adjustment axis link, and when adjusting the scheme of central kickboard height above by handle, adjusts The rotation of nodal axisn drives the traction end of lanyard assembly to synchronize and is adjusted by link mechanism, so as to avoid above-mentioned profiling is influenced For structure according to the automatic function of carrying out height adjustment of landform height, adjustment interpolated depths are more convenient.

Preferably, the link mechanism includes the second joining beam, third joining beam, four-bar linkage and movable plate；The activity Plate is hingedly arranged on seedling platform bracket, and four-bar linkage is connected on movable plate and rotates synchronously with movable plate along its hinged end D, draws The traction end B of rope component is movably arranged on the upper end of four-bar linkage, and the lower end of the second joining beam is connected in shaft, third The both ends of joining beam are flexibly connected between the upper end of the second joining beam and the lower end of four-bar linkage respectively；The movable plate Hinged end D is parallel and equal with the first joining beam with the connecting line of the traction end B of lanyard assembly, and the length of the second joining beam is equal to activity The hinged end D of plate to four-bar linkage the distance between lower end tie point C, and when the hinged end D of movable plate is to four-bar linkage Lower end tie point C when being in same vertical direction, third joining beam is horizontally disposed.The technical solution specifically discloses joining beam machine A kind of embodiment of structure, in the embodiment, link mechanism includes the second joining beam, third joining beam, four-bar linkage and movable plate, And meet condition defined in above scheme, to make leading for the connection and lanyard assembly between adjustment axis and central kickboard Draw and form a kind of parallel linkage structure between end, adjustment axis drives central kickboard movement, opposite with the traction end of lanyard assembly living The movement of the hinged end D of movable plate is consistent, to reach dynamic equilibrium, will not influence above-mentioned imitated structure because adjusting interpolated depths According to the automatic function of carrying out height adjustment of landform height.

Preferably, the middle part of the center kickboard is connected with first joining beam, the front end of central kickboard passes through Lanyard assembly connects seedling platform lift control system.In the technical solution, central kickboard uses a kind of similar lever construction, and center is floating The middle part of plate is hingedly arranged, and the rear end of central kickboard or front end are bonded ground, as landform height changes, central kickboard with The hinge joint at middle part is axis swing, and amplifies above-mentioned swing by lever principle, is fed back eventually by the lanyard assembly of front end Into seedling platform lift control system.

Preferably, being equipped with pin shaft by the first rotating arm of rotary plate to the second end, the second rotating arm can be unidirectional Acting on the pin shaft one-directionally rotates the first rotating arm.It is that the second rotating arm is acted on defined by the technical solution First rotating arm on pin shaft be in rotary plate between the second end, i.e., relative to the second rotating arm and first end Pivot joint is in rotary plate two sides, is driven using lever mode.

Preferably, the driving component includes drive block, and it is connected on drive block and acts on the drive block and make Its driving part moved；The drive block is sheathed on the outside of rotary plate can be relative to the concentric rotation of rotary plate, and can be single The first rotating arm is one-directionally rotated to the first rotating arm is acted on.In above-mentioned technical proposal, drive block, which is sheathed on, to be turned Drive block can be acted on relative to the concentric rotation of rotary plate, driving part on the outside of spool, make its rotation, and during rotation Single effect one-directionally rotates the first rotating arm in the pin shaft.

Preferably, the drive block is connected by linkage mechanism the interpolation clutch drive rod of rice transplanter；The linkage Mechanism includes the hinged swing rod on the rack in middle part, and the link assembly being connected with the first end of the swing rod, connecting rod The end of component connects interpolation clutch drive rod；The second end of the swing rod is matched with the drive block using cam structure It closes.Drive block in the program is connected by linkage mechanism the interpolation clutch drive rod of rice transplanter, when drive block drives first While rotating arm rotates, also by the engagement or disengaging of linkage mechanism control interpolation clutch, thus by transplanting clutch and seedling Platform lifting integration, simplifies operating mechanism, is easy to use.In the middle part of swing rod in the specific program hingedly on the rack, drive block is adopted It is swung with cam structure driving swing rod along its hinged end, the first end of swing rod then drives clutch driving by link assembly Bar controls the engagement or disengaging of interpolation clutch.

Preferably, the drive block is equipped with cam path, the second end of swing rod is equipped with idler wheel；The second end of swing rod Portion rolls and is set in the cam path of the drive block；And with the rotation of drive block, the second end and the cam path phase of swing rod To movement, the both ends of cam path are equipped with recess portion for being embedded in and positioning the idler wheel.In the technical solution, above-mentioned cam structure Specific embodiment is that cam path is equipped on drive block, and the second end of swing rod is bonded cam path, realizes cam driving structure.

Preferably, the gate valve, including valve body, and it is set to the rotary plate and cut-off spool of valve inner；

Rotary valve cavity and cut-off valve chamber are equipped in the valve body, valve body is equipped with hydraulic fluid port P, the hydraulic fluid port communicated with the rotary valve cavity A, hydraulic fluid port T1 and hydraulic fluid port T2；Oil circuit between the hydraulic fluid port P and hydraulic fluid port A passes through the rotary valve cavity and the cut-off valve chamber, cut-off Spool is set to that shut-off valve is intracavitary, and for controlling the on-off of the oil circuit in the oil circuit between rotary valve cavity and hydraulic fluid port A；It is described Rotary plate is set in rotary valve cavity, for synchronously control hydraulic fluid port T1, hydraulic fluid port T2 respectively with the oil circuit on-off of hydraulic fluid port P；Hydraulic fluid port T1 and Hydraulic fluid port T2 is communicated always by rotary valve cavity.In the program, valve body is equipped with hydraulic fluid port P, the hydraulic fluid port A, oil communicated with the rotary valve cavity Mouth T1 and hydraulic fluid port T2；Hydraulic fluid port P therein is the oil inlet for connecting hydraulic power source, and hydraulic fluid port T1 is hydraulic device all the way under connection, as Oil outlet, hydraulic fluid port A and hydraulic fluid port T2 are separately connected oil cylinder small chamber and the big chamber of oil cylinder, as oil inlet and outlet.In above scheme, turn Spool is set in rotary valve cavity, for synchronously control hydraulic fluid port T1, hydraulic fluid port T2 respectively with the oil circuit on-off of hydraulic fluid port P；And end spool It is set to that shut-off valve is intracavitary, and for controlling the on-off of the oil circuit in the oil circuit between rotary valve cavity and hydraulic fluid port A.Therefore above-mentioned side Rotary plate and cut-off spool is arranged in case in same valve body, so that the on-off of a plurality of oil circuit is controlled, the control including oil cylinder output quantity System, and under hydraulic device all the way control；To provide a kind of gate valve of Highgrade integration, simplifies structure, reduce cost.

Preferably, constitute first chamber between the rotary valve cavity wall and rotary plate, hydraulic fluid port P, hydraulic fluid port A and rotary valve cavity First chamber communicates；It is set on the spool side wall of the rotary plate there are two notch, two notches are communicated with the first chamber, oil The first oil circuit connection mouth and the notch between mouth T1, hydraulic fluid port T2 and rotary valve cavity are on same axial position；Two notches Between constitute closure part for blocking the first oil circuit connection mouth between hydraulic fluid port T1, hydraulic fluid port T2 and rotary valve cavity；The rotary valve cavity Second chamber is also constituted between inner wall and rotary plate, second chamber is not communicated with first chamber；Hydraulic fluid port T1, hydraulic fluid port T2 and rotary valve cavity Second chamber communicated by oil circuit connection.

Above scheme provides a kind of specific embodiment, and the hydraulic fluid port P, hydraulic fluid port A in the program pass through the first chamber of rotary valve cavity Room communicates always, and then the on-off between hydraulic fluid port P and hydraulic fluid port A is controlled by cut-off spool；And the hydraulic fluid port T1 and hydraulic fluid port T2 can be communicated with the first chamber of rotary valve cavity, but be controlled by the rotation of rotary plate；When the notch and oil on rotary plate When the first oil circuit connection mouth between mouthful T1, hydraulic fluid port T2 and rotary valve cavity is opposite, hydraulic fluid port T1, hydraulic fluid port the T2 oil circuit with hydraulic fluid port P respectively It opens；When the closure part on the rotary plate is opposite with the first oil circuit connection mouth between hydraulic fluid port T1, hydraulic fluid port T2 and rotary valve cavity, Hydraulic fluid port T1, hydraulic fluid port T2 are closed with the oil circuit of hydraulic fluid port P respectively.In addition, such as above-mentioned record, hydraulic fluid port T1 is hydraulic dress all the way under connection It sets, as oil outlet, hydraulic fluid port A and hydraulic fluid port T2 are separately connected oil cylinder small chamber and the big chamber of oil cylinder.Above scheme is for solution Problem is when gate valve send oil to hydraulic fluid port A, and the oil reserve of oil cylinder small chamber becomes larger, and piston motion is indoor hydraulic by the big chamber of oil cylinder Oil pressure goes out, and is flowed into after second chamber by hydraulic fluid port T2 and be discharged by hydraulic fluid port T1.First chamber and second chamber in above scheme, can To be to be equipped with the groove being circumferentially arranged along it on the spool side wall of forwarding core, to constitute the first chamber between rotary valve cavity wall Room and second chamber；The spool side wall evagination for being also possible to rotary valve cavity wall compared to forwarding core forms groove, to form the One chamber and second chamber.

Preferably, the rice transplanter is additionally provided with HST operating system, HST operating system includes handle mechanism, and is used for The sensor of driving part in connection control gate valve operating device, and for connecting the drive rod on HST；The handle machine Structure includes the handle operation panel by first rotating shaft positioning on the rack, and is located on handle operation panel by the second shaft Trigger rod；The first end of the drive rod is connected on handle operation panel, and sensor is fixed on handle operation panel, First rotating shaft and the second shaft are perpendicular；The trigger rod driving handle operation panel is rotated along first rotating shaft, described in control HST；Trigger rod is rotated along the second shaft, and can trigger the sensor, controls gate valve operating device.HST operation System includes handle mechanism, sensor and drive rod, and wherein the driving motor in sensor connection control gate valve operating device, passes Lever connects HST.And the handle mechanism includes and passing through the by first rotating shaft positioning handle operation panel on the rack Two shafts are located in the trigger rod on handle operation panel.By above-mentioned HST operating system, on the one hand operator can manipulate hand Handle operating stick driving handle operation panel is rotated along first rotating shaft, and then controls HST by drive rod, is become in specifically control HST The discharge capacity of pump is measured to control output revolving speed and the steering of hydraulic motor；On the other hand can trigger rod along the second shaft turn Dynamic, trigger sensor in trigger rod rotation process further controls interpolation clutch to control gate valve operating device.This Scheme concentrates on the control of HST forward-reverse in the same handle mechanism with interpolation clutch for clutch control, simplifies structure, is easy to use.

Detailed description of the invention

Fig. 1 is the rice transplanter overall schematic of the invention.

Fig. 2 is the transplanting depth-adjusting device structural schematic diagram on seedling platform.

Fig. 3 is the overall structure diagram of gate valve control device.

Fig. 4 is the drive mechanism schematic diagram of gate valve control device.

Fig. 5 is the schematic diagram of gate valve control device connection connection interpolation clutch part.

Fig. 6 is the drive block structural schematic diagram of gate valve control device.

Fig. 7 is gate valve external structure schematic diagram.

Fig. 8 is gate valve side cut-away diagram.

Fig. 9 is the first diagrammatic cross-section of gate valve.

Figure 10 is the second diagrammatic cross-section of gate valve.

Figure 11 is the rotary plate structural schematic diagram in gate valve.

Figure 12 is hydraulic schematic used in rice transplanter.

Figure 13 is the structural schematic diagram of HST operating system.

Specific embodiment

The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.

In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", " clockwise ", " inverse The orientation or positional relationship of the instructions such as hour hands " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description originally Invention and simplified description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific side Position construction and operation, therefore be not considered as limiting the invention.

In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include one or more of the features.In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two It is a or more than two, unless otherwise restricted clearly.

In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc. Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be machine Tool connection, is also possible to be electrically connected；It can be directly connected, two members can also be can be indirectly connected through an intermediary Connection inside part.For the ordinary skill in the art, above-mentioned term can be understood in this hair as the case may be Concrete meaning in bright.

In the present invention unless specifically defined or limited otherwise, fisrt feature second feature "upper" or "lower" It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it Between other characterisation contact.Moreover, fisrt feature includes the first spy above the second feature " above ", " above " and " above " Sign is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.Fisrt feature exists Second feature " under ", " lower section " and " following " include that fisrt feature is directly below and diagonally below the second feature, or is merely representative of First feature horizontal height is less than second feature.

As shown in figs. 1-13, a kind of rice transplanter, including rack 11, and it is set to the seedling platform 12 of 11 rear side of rack, And the oil cylinder 2 that the driving seedling platform 12 is gone up and down, the gate valve 3 of control 2 output quantity of oil cylinder, and with the driving gate The gate valve operating device 4 of valve 3.Generally, the rice transplanter mainly includes power part and transplanting portion two parts, and power part It is divided into engine, HST, gearbox, chassis, covering, hydraulic, electric appliance etc..HST, i.e., the English letter of hydrostatic stepless transmission Claim, effect is to change pumpage by a set of hydraulic device integrated to control the output revolving speed of hydraulic motor and turn To.Power transmission route are as follows: engine-HST-gearbox-driving wheel.Interpolating portion is generally divided into gate valve control device 4, door Valve 3, oil cylinder 2, lifting seedling platform 12, interpolation mechanism etc.；Wherein, gate valve control device 4 controls gate valve 3 and runs, further control oil 2 output quantity of cylinder, to adjust the lifting of seedling platform 12, interpolation device carries out interpolation when seedling platform 12 declines state.Wherein, in interpolating portion Interpolation mechanism is not the innovative point of this application, therefore omits descriptions thereof；Specifically, the structure of interpolation mechanism may refer to Shen It asks someone previously to have applied, Publication No. " CN109892081A ", invention and created name is a kind of " and the transplanting machine of rice transplanter Structure " Chinese invention patent disclosure.

As illustrated in fig. 1 and 2, the seedling platform 12 of the rice transplanter is equipped with transplanting depth-adjusting device, including is set to seedling platform Central kickboard assembly and the depth on 12 brackets adjust assembly.It includes being located on seedling platform bracket 121 that the depth, which adjusts assembly, Adjustment axis 51, and the handle 52 that the driving adjustment axis 51 rotates.Specifically, the lower end of the handle 52 is connected to In adjustment axis 51, handle 52 can drive 51 rotation-limited of adjustment axis.The seedling platform bracket 121 is equipped with interpolation gear Plate, handle 52 pass through the interpolation gear plate, and interpolation gear plate is equipped with multiple gears for limiting 52 position of handle.

The center kickboard assembly includes central kickboard 54, and central kickboard 54 passes through the first joining beam 55 with the adjustment axis 51 It is connected, and central kickboard 54 connects 12 lift control system of seedling platform (signified seedling platform elevating control herein by lanyard assembly System is embodied as gate valve operating device 4 in the present embodiment).The technical solution is related to a kind of transplanting depth-adjusting device, Can be by external force in the handle 52 in the transplanting depth-adjusting device, handle 52 drives adjustment axis 51 to rotate, to make Central kickboard 54 is axle center with adjustment axis 51, with the first joining beam 55 is swing arm and swings certain angle, and then makes central kickboard 54 change relative to the height of seedling platform bracket 121, due to the transplanting depth-adjusting device in use, central kickboard 54 is bonded Ground, therefore the height of the interpolating portion on seedling platform bracket 121 changes, and then adjusts transplanting portion to the transplanting depth of rice shoot.In In specific embodiment, the middle part of the center kickboard 54 is hinged with first joining beam 55, the front end of central kickboard 54 Portion connects 12 lift control system of seedling platform by lanyard assembly.In the technical solution, central kickboard 54 uses a kind of similar lever The middle part of structure, central kickboard 54 is hingedly arranged, and the rear end of central kickboard 54 or front end are bonded ground, with landform height Variation, central kickboard 54 amplifies above-mentioned swing by lever principle using the hinge joint at middle part as axis swing, eventually by front end The lanyard assembly in portion is fed back in 12 lift control system of seedling platform.

On the basis of above scheme, link mechanism is additionally provided on the seedling platform bracket 121, adjustment axis 51 passes through joining beam machine Structure is connected with the lanyard assembly.The traction end of the lanyard assembly is adjusted with the rotation of adjustment axis 51.Such as background technique In middle record work, central kickboard 54 is bonded ground, and landform height is fed back to 12 liters of seedling platform by lanyard assembly 57 in real time Control system is dropped, seedling platform 12 is carried out and highly adjusts.And in the program, it is additionally provided with link mechanism on seedling platform bracket 121, passes through setting Link mechanism makes the traction end of lanyard assembly 57 and adjustment axis 51 link, high when adjusting central kickboard 54 above by handle 52 When the scheme of degree, the rotation of adjustment axis 51 drives the traction end of lanyard assembly 57 to synchronize and is adjusted by link mechanism, thus Avoiding influences above-mentioned imitated structure according to the automatic function of carrying out height adjustment of landform height, and adjustment interpolated depths are more square Just.In specific embodiment as illustrated in the drawing, the link mechanism includes the second joining beam 561, third joining beam the 562, the 4th Joining beam 563 and movable plate 564.The movable plate 564 is hingedly arranged on seedling platform bracket 121, and four-bar linkage 563 is connected to activity It is rotated synchronously on plate 564 and with movable plate 564 along its hinged end D, the traction end B of lanyard assembly 57 is movably arranged on four-bar linkage On 563 upper end, the lower end of the second joining beam 561 is connected in adjustment axis 51, and the both ends of third joining beam 562 are respectively with It is flexibly connected between the upper end and the lower end of four-bar linkage 563 of two joining beams 561.The hinged end D of the movable plate 564 and drawing The connecting line and the first joining beam 55 of the traction end B of rope component 57 is parallel and equal, and the length of the second joining beam 561 is equal to movable plate 564 hinged end D to four-bar linkage 563 the distance between lower end tie point C, and as the hinged end D to the of movable plate 564 When the lower end tie point C of four-bar linkage 563 is in same vertical direction, third joining beam 562 is horizontally disposed.The technical solution is specific Disclose a kind of embodiment of link mechanism, in the embodiment, link mechanism includes the second joining beam 561, third joining beam 562, four-bar linkage 563 and movable plate 564, and meet condition defined in above scheme, to make adjustment axis 51 and center A kind of parallel linkage structure is formed between connection between kickboard 54 and the traction end of lanyard assembly 57, during adjustment axis 51 drives Kickboard 54 is entreated to move, it is consistent with respect to the movement of hinged end D of movable plate 564 with the traction end of lanyard assembly 57, to reach dynamic State balance will not influence above-mentioned imitated structure according to the automatic function for carrying out height adjustment of landform height because adjusting interpolated depths Energy.

In above scheme, towing plate 58 is connected on the upper end of the four-bar linkage 563, towing plate 58 is with lanyard assembly Point is connected to lanyard assembly 57 with the sliding limit connection of four-bar linkage 563, the other end of towing plate 58 on the basis of 57 traction end B On.The center kickboard 54 is equipped with pull rod 59 and connect with the towing plate 58.The plate body of the towing plate 58 is equipped with sliding slot 581, the traction end B of lanyard assembly 57 are extended in the sliding slot 581 and can be slided with respect to sliding slot 581.Above-mentioned technical proposal In, when the central kickboard 54 is swung along its middle part hinge joint, towing plate 58 can be pulled, makes towing plate 58 with respect to four-bar linkage 563 slidings, so that lanyard assembly 57 be made to be pulled.

The gate valve operating device 4 being connected with 54 assembly of central kickboard in above-mentioned transplanting depth-adjusting device is specifically as schemed Shown in 3~6, gate valve operating device 4, be connected including middle part with the rotary plate 32 of the gate valve 3 and circumferential clocking of turbine rotation the One rotating arm 41, and can first rotating arm 41 described in unidirectional drive limiting the second rotating arm 42 rotated in range and driving Dynamic component.This feature in above scheme, limiting and be " limiting range ", specifically uses following scheme, gate valve operating device 4 Including restriction plate 43, at least part of restriction plate 43 constitutes retention bead 43a and is set in the rotating path of pin shaft, to Limitation first rotating arm 41 rotates in restriction range.

The first end of second rotating arm 42 and the first end of first rotating arm 41 are pivotally connected, and are connected on pivot end The second end of tension spring 44, the second rotating arm 42 connects central 54 assembly of kickboard by lanyard assembly 57.The gate valve operating device 4 In include first rotating arm 41, the second rotating arm 42 and driving assembly, the wherein middle part of first rotating arm 41 and the gate valve 3 Rotary plate 32 is connected and synchronous drive rotary plate 32 rotates, and then controls 2 output quantity of oil cylinder, final to control 12 height of seedling platform. In this scheme, driving assembly is used and is driven by external force, manually or electrically the driving end of mode, can be the described in unidirectional drive One rotating arm 41 rotates in restriction range.This driving assembly is for lifting the height of seedling platform 12 when not working in rice transplanter It rises.The second end of second rotating arm 42 connects central 54 assembly of kickboard by lanyard assembly 57, and at work, center is floating for seedling machine 54 assembly of plate is fed back according to surface state in real time, draws the second rotating arm 42, while tension spring 44 pulls first rotating arm 41 With the second rotating arm 42, and first rotating arm 41 is made to maintain initial position, in the case where the second rotating arm 42 and tension spring 44 act on, led to It crosses gate valve 3 and adjusts 2 output quantity of oil cylinder, it is final to adjust 12 height of seedling platform.The program, by the driving gate valve 3 in profiling regulatory function Mode and driving assembly driving 3 mode of gate valve combine, using same set of gate valve operating device 4 realize rice transplanter work when and For the control of 2 output quantity of oil cylinder when not working, has and simplify structure, reduce cost, reduce the advantage of operation difficulty.

In a kind of wherein embodiment, pin shaft 45 is equipped with by the first rotating arm 41 of rotary plate 32 to the second end, Second rotating arm 42 can single effect in the pin shaft 45 one-directionally rotate the first rotating arm 41.The technical solution is limited It is fixed, the pin shaft 45 on first rotating arm 41 that the second rotating arm 42 is acted on be in rotary plate 32 to the second end it Between, i.e., the pivot joint relative to the second rotating arm 42 and first end is in 32 two sides of rotary plate, is driven using lever mode.Having In the embodiment of body, the pin shaft 45 is set on the second end of first rotating arm 41, the second rotating arm 42 be equipped with The compatible groove 421 of the pin shaft 45.421 bottom of groove on second rotating arm 42 can against pin rod and exert a force with The first rotating arm 41.Groove 421 is set corresponding with pin shaft 45 in the technical solution, on the second rotating arm 42, passes through groove 421 realize unidirectional drive with 45 mode of pin shaft.

Driving assembly in above scheme includes drive block 46, and is connected on drive block 46 and acts on the drive block 46 driving parts for moving it.The drive block 46 can single effect in the first rotating arm 41 make its one-directional rotation. As above it records, pin shaft 45 is equipped with by the first rotating arm 41 of rotary plate 32 to the second end, the present embodiment is by pin shaft 45 It is set on the second end of first rotating arm 41.Wherein, the drive block 46, which is sheathed on the outside of rotary plate 32, opposite to turn The concentric rotation of spool 32, the driving end of drive block 46 can single effect keep the first rotating arm 41 single in the pin shaft 45 To rotation.In above-mentioned technical proposal, drive block 46, which is sheathed on the outside of rotary plate 32, to be driven relative to the concentric rotation of rotary plate 32 Dynamic component acts on drive block 46, makes its rotation, and during rotation single effect in the pin shaft 45 make it is described first rotation Pivoted arm 41 one-directionally rotates.In the present embodiment, driving part can using automatically controlled or manual two schemes, can also be used it is automatically controlled and The scheme that manual control combines, as the drive block 46 outer ledge on for tooth side 461 on same circumference, driving portion Part includes the sliding tooth 471 of transmission of being meshed with above-mentioned tooth side 461, and the driving sliding tooth 471 rotation driving electricity Machine 472.In the technical solution, driving part uses driving motor 472, realizes automatically controlled.Or the driving part further includes setting The driving handle 473 being placed on drive block 46.In the technical solution, driving part uses driving handle 473, realizes manual.

On the basis of above-mentioned gate valve operating device 4, the present embodiment is further by transplanting clutch and the lifting integration of seedling platform 12. Specific embodiment is: the drive block 46 is connected by linkage mechanism the interpolation clutch drive rod of rice transplanter, in the program Drive block 46 be connected by linkage mechanism the interpolation clutch drive rod of rice transplanter, when drive block 46 drives first rotating arm 41 While rotation, also by the engagement or disengaging of linkage mechanism control interpolation clutch, thus by transplanting clutch and 12 liters of seedling platform Drop integration, simplifies operating mechanism, is easy to use.

The linkage mechanism includes the swing rod 48 that middle part is hinged in rack 11, and the first end with the swing rod 48 The end of the link assembly being connected, link assembly connects interpolation clutch drive rod 401.The second end of the swing rod 48 with The drive block 46 uses camming structure fits.The link assembly includes leading with what the first end of the swing rod 48 was connected Draw on part 491 and head end connection traction piece 491, end connects the connecting rod 492 on interpolation clutch drive rod 401.The drive Motion block 46 is equipped with cam path 462, and the second end of swing rod 48 is movably set in the cam path 462 of the drive block 46.And With the rotation of drive block 46, the second end of swing rod 48 and 462 relative motion of cam path.The specific implementation of above-mentioned cam structure Scheme is that cam path 462 is equipped on drive block 46, and the second end of swing rod 48 is bonded cam path 462, realizes actuated by cams knot Structure.The second end of the swing rod 48 is equipped with idler wheel 481, is set to its rolling in the cam path 462 of the drive block 46. The both ends of the cam path 462 are equipped with recess portion 463 for being embedded in and positioning the idler wheel 481.The recess portion at 462 both ends of cam path 463 can positioning roller 481, so that it is maintained a stable state at both ends.What the technical solution specifically provided linkage mechanism can Embodiment is hinged in rack 11 in the middle part of the swing rod 48 in the program, and drive block 46 drives 48 edge of swing rod using cam structure Its hinged end is swung, and the first end of swing rod 48 then passes through 492 Component driver interpolation clutch drive rod 401 of connecting rod, and control is inserted It is worth the engagement or disengaging of clutch 40.

The driven gate valve 3 of above-mentioned gate valve operating device 4, specifically refers to shown in attached drawing 7~11, including valve body 31, and Rotary plate 32, cut-off spool 33 and the overflow spool 34 being set to inside valve body 31.

Wherein, rotary valve cavity and cut-off valve chamber are equipped in the valve body 31, valve body 31 is equipped with to be communicated with the rotary valve cavity Hydraulic fluid port P, hydraulic fluid port A, hydraulic fluid port T1 and hydraulic fluid port T2.Oil circuit between the hydraulic fluid port P and hydraulic fluid port A passes through the rotary valve cavity and the cut-off Valve chamber, cut-off spool 33 are set to that shut-off valve is intracavitary, and for controlling the oil circuit in the oil circuit between rotary valve cavity and hydraulic fluid port A On-off.The rotary plate 32 is set in rotary valve cavity, for synchronously control hydraulic fluid port T1, hydraulic fluid port the T2 oil circuit with hydraulic fluid port P respectively On-off.Hydraulic fluid port T1 and hydraulic fluid port T2 is communicated always by rotary valve cavity.Hydraulic fluid port P in above scheme be connect hydraulic power source (fuel tank) into Hydraulic fluid port, the channel between hydraulic fluid port P and rotary valve cavity are oil inlet passage；Hydraulic fluid port T1 is hydraulic device (HST) all the way under connection, as going out Hydraulic fluid port, hydraulic fluid port A and hydraulic fluid port T2 are separately connected 2 small chamber of oil cylinder and the big chamber of oil cylinder 2, as oil inlet and outlet, hydraulic fluid port T1, hydraulic fluid port T2 Channel between rotary valve cavity is oil discharge passage.In above scheme, rotary plate 32 is set in rotary valve cavity, for synchronously control oil Mouthful T1, hydraulic fluid port T2 respectively with the oil circuit on-off of hydraulic fluid port P.And end spool 33 to be set to shut-off valve intracavitary, and in rotary valve cavity with For controlling the on-off of the oil circuit in oil circuit between hydraulic fluid port A.Therefore 32 He of rotary plate is arranged in above scheme in same valve body 31 End spool 33, to control the on-off of a plurality of oil circuit, the control including 2 output quantity of oil cylinder, and under hydraulic device all the way Control.To provide a kind of gate valve 3 of Highgrade integration, simplifies structure, reduce cost.

In specific embodiments, composition first chamber 313 between the rotary valve cavity wall and rotary plate 32, hydraulic fluid port P, Hydraulic fluid port A is communicated with the first chamber 313 of rotary valve cavity.It is set on the spool side wall of the rotary plate 32 there are two notch 321, two lack Mouth 321 is communicated with the first chamber 313, and the first oil circuit connection mouth between hydraulic fluid port T1, hydraulic fluid port T2 and rotary valve cavity is lacked with described Mouth 321 is on same axial position.It constitutes between two notches 321 for blocking between hydraulic fluid port T1, hydraulic fluid port T2 and rotary valve cavity The first oil circuit connection mouth closure part 322.Above scheme provides a kind of specific embodiment, hydraulic fluid port P, hydraulic fluid port in the program A is communicated always by the first chamber 313 of rotary valve cavity, and then the on-off between hydraulic fluid port P and hydraulic fluid port A is carried out by cut-off spool 33 Control.And the hydraulic fluid port T1 can be communicated with hydraulic fluid port T2 with the first chamber 313 of rotary valve cavity, but by the rotation of rotary plate 32 into Row control.When the notch 321 on rotary plate 32 is opposite with the first oil circuit connection mouth between hydraulic fluid port T1, hydraulic fluid port T2 and rotary valve cavity When, hydraulic fluid port T1, hydraulic fluid port T2 are opened with the oil circuit of hydraulic fluid port P respectively.When on the rotary plate 32 closure part 322 and hydraulic fluid port T1, oil When the first oil circuit connection mouth between mouth T2 and rotary valve cavity is opposite, hydraulic fluid port T1, hydraulic fluid port T2 are closed with the oil circuit of hydraulic fluid port P respectively.Institute It states and also constitutes second chamber 314 between rotary valve cavity wall and rotary plate 32, second chamber 314 is not communicated with first chamber 313.Oil Mouth T1, hydraulic fluid port T2 are communicated with the second chamber 314 of rotary valve cavity by oil circuit connection.In above scheme, pass through the second of rotary valve cavity Chamber 314 communicates hydraulic fluid port T1, hydraulic fluid port T2 always, such as above-mentioned record, and hydraulic fluid port T1 is hydraulic device HST all the way under connection, as Oil outlet, hydraulic fluid port A and hydraulic fluid port T2 are separately connected 2 small chamber of oil cylinder and the big chamber of oil cylinder 2.Above scheme is in order to solve the problems, such as to be When gate valve 3 send oil to hydraulic fluid port A, the oil reserve of 2 small chamber of oil cylinder becomes larger, and piston motion is by the 2 indoor hydraulic oil of big chamber of oil cylinder It extrudes, and is flowed into after second chamber 314 by hydraulic fluid port T2 and be discharged by hydraulic fluid port T1.

In addition, being additionally provided with a plurality of isopipe 323 being circumferentially arranged along it on the spool side wall of the rotary plate 32.It is above-mentioned etc. The setting of indent 323 is to guarantee that pressure suffered by 32 circumferential direction of rotary plate is consistent.One end of the rotary plate 32 stretches out in The other end of the valve body 31, rotary plate 32 is in inside the valve body 31.It is equipped in the valve body 31 for closing rotary valve cavity The plug screw 35 of one side opening, plug screw 35 and the inner end of the rotary plate 32 offset.The inside of the rotary plate 32 is equipped with along it What is be axially arranged unloads oil pocket 324, unloads oil pocket 324 and is communicated by the through-hole on 32 side wall of rotary plate with the second chamber 314.Institute The inner end for stating rotary plate 32 is equipped with and the oil unloading trough 325 for unloading oil pocket 324 and communicating.In above-mentioned technical proposal, due to turning Spool 32 is to be rotatably dispose in rotary valve cavity, therefore between rotary plate 32 and rotary valve cavity wall and sealing can not be completely secured, and is existed Hydraulic oil infiltration.If will lead to the increase of rotary valve cavity pressure but by hydraulic oil persistent accumulation.Under this scheme, in rotary plate 32 inside, which is equipped with, unloads oil pocket 324 along what it was axially arranged, and is equipped on the inner end of rotary plate 32 and unloads oil pocket 324 with described The oil unloading trough 325 communicated.When the hydraulic oil of infiltration is flow on the inner end of rotary plate 32, emptying can be flowed by oil unloading trough 325 Chamber 324, and the second chamber 314 of rotary valve cavity is eventually returned to, finally it is discharged through oil discharge passage by hydraulic fluid port T1.Using such side Case can solve the problems, such as that cavity pressure caused by the existing permeability of rotary valve control increases, and by the hydraulic oil weight of above-mentioned exudation It is newly introduced into hydraulic system, to guarantee that rotary valve can work normally.

The cut-off spool 33 is connected on the valve body 31, and can be adjusted axially with respect to valve body 31.The shut-off valve Third chamber 315 is constituted between chamber and cut-off spool 33, hydraulic fluid port A is communicated with the third chamber 315 of cut-off valve chamber.The shut-off valve The inner end of core 33 is equipped with taper sealing end 331, and taper sealing end 331 is for blocking between third chamber 315 and rotary valve cavity Oil duct.In above-mentioned technical proposal, cut-off spool 33, which specifically can be used, to be threadedly connected on valve body 31, thus in cut-off spool 33 When rotation relative to valve body 31 generate axial movement, end 33 inner end of spool taper sealing end 331 for third chamber 315 with Oil duct between rotary valve cavity controls on-off, the on-off between further control port A and hydraulic fluid port P.Third chamber in above scheme Room 315 can refer to institute's composition scheme of above-mentioned first chamber 313 and second chamber 314.

Overflow valve chamber is additionally provided in the valve body 31, overflow valve chamber is separately connected hydraulic fluid port P and hydraulic fluid port T1.The overflow valve chamber Interior to be equipped with overflow spool 34, overflow spool 34 is used for oil circuit on-off between control port P and hydraulic fluid port T1.The overflow spool 34 connects It is connected on the valve body 31, and can be adjusted axially with respect to valve body 31.Between the overflow valve chamber and overflow spool 34 constitute with The 4th chamber 317 that the hydraulic fluid port P is communicated, and the 5th chamber 318 communicated with the hydraulic fluid port T1, the overflow spool 34 are controlled Make the on-off between the 4th chamber 317 and the 5th chamber 318.In above scheme, it is additionally provided with overflow valve chamber in valve body 31, and Overflow valve is arranged inside.When 31 internal hydraulic pressure of valve body is larger, above-mentioned overflow valve can control to realize pressure release, the hydraulic oil of pressure release by Hydraulic fluid port P flows successively through the 4th chamber 317, the 5th chamber 318, is finally discharged through hydraulic fluid port T1.

First chamber 313, second chamber 314, third chamber 315, the 4th chamber 317 and the 5th chamber in above scheme 318, it can be the groove for being equipped on spool side wall and being circumferentially arranged along it, to constitute first chamber between valve chamber inner wall 313 and second chamber 314.It is also possible to valve chamber inner wall and forms groove compared to spool side wall evagination, to forms first chamber 313, second chamber 314, third chamber 315, the 4th chamber 317 and the 5th chamber 318.

Based on the specific structure of above-mentioned rice transplanter, the present embodiment further provides for a kind of hydraulic pressure system on the rice transplanter System, as shown in figure 12, which includes fuel tank 6, gate valve 3, oil cylinder 2 and HST7.Between the fuel tank 6, gate valve 3 and HST7 It is sequentially connected and constitutes the first hydraulic circuit, the first hydraulic circuit is equipped with for providing the oil pump of power for running of hydraulic power oil, oil The big chamber and small chamber of cylinder 2 are connect with gate valve 3 respectively.As recorded in above scheme, the gate valve 3 is equipped with hydraulic fluid port P, hydraulic fluid port A, the oil outlet of hydraulic fluid port T1 and hydraulic fluid port T2, hydraulic fluid port P and fuel tank 6 passes through pipe by piping connection, the oil inlet and hydraulic fluid port T1 of HST7 Road connection, for the small chamber and hydraulic fluid port A of oil cylinder 2 by piping connection, the big chamber and hydraulic fluid port T2 of oil cylinder 2 pass through piping connection.Institute State oil circuit on-off between gate valve 3 control port P and hydraulic fluid port A and hydraulic fluid port T1, hydraulic fluid port T2 respectively with the oil circuit on-off of hydraulic fluid port P, Hydraulic fluid port T1 and hydraulic fluid port T2 are communicated always.In above scheme, 6 hydraulic power source of hydraulic fluid port P connection fuel tank, as the oil inlet of gate valve 3, hydraulic fluid port T1 is hydraulic device all the way under connection HST7, and as the oil outlet of gate valve 3, hydraulic fluid port A and hydraulic fluid port T2 are separately connected 2 small chamber of oil cylinder With the big chamber of oil cylinder 2, oil inlet and outlet as gate valve 3.In the program, HST7 connection hydraulic fluid port T1, and hydraulic fluid port T1 and hydraulic fluid port T2 begins Last phase is logical.Gate valve 3 in this scheme controls 2 output quantity of oil cylinder, exports when gate valve 3 controls hydraulic oil to hydraulic fluid port T1 and hydraulic fluid port T2 When, the oil reserve of the big chamber of one side oil cylinder 2 increases, and 2 output quantity of oil cylinder becomes larger, and seedling platform 12 declines, another aspect section hydraulic Oil enters HST7 by hydraulic fluid port T1, supplements hydraulic oil to HST7.When gate valve 3, which controls hydraulic oil, to be exported to hydraulic fluid port A, the small chamber of oil cylinder 2 The oil reserve of room increases, and 2 output quantity of oil cylinder becomes smaller, and seedling platform 12 rises.Simultaneously because 2 small chamber of oil cylinder will be in the big chamber of oil cylinder 2 Hydraulic oil back-pressure, make its by hydraulic fluid port T2 return gate valve 3 in, and further because hydraulic fluid port T1 and hydraulic fluid port T2 communicate always, and from Hydraulic fluid port T1 enters HST7, supplements hydraulic oil to HST7.Therefore, using above-mentioned hydraulic system, either oil cylinder 2 is in output quantitative change During big or output quantity becomes smaller, hydraulic oil can be supplemented to HST7, it is ensured that HST7 is worked normally.

In addition, the hydraulic system further includes power-assisted steering device 8, the oil inlet end of power-assisted steering device 8 and the oil outlet of fuel tank 6 By piping connection, the oil outlet of power-assisted steering device 8 and the hydraulic fluid port P of gate valve 3 pass through piping connection.The power-assisted steering device 8 can Mitigate operating force of the driver actions on steering wheel (alternatively referred to as steering wheel), steering subsidy power is generated using extrinsic power Device be known as power steering apparatus.Pipeline between the oil outlet of the HST7 and the oil return hole of fuel tank 6 is equipped with radiator. In the program, for being radiated, being cooled down to the high temperature hydraulic oil flowed out in HST7.

The HST7 includes cabinet 71, and the variable pump 72 and motor 73 that are set in cabinet 71, the variable pump 72 Revolving speed and the steering of motor 73 are controlled by control hydraulic oil.HST7 structure in above scheme is existing structure, reference The operating mechanism recorded in the Chinese utility model patent text of " CN204895144U " controls the rotation of HST7 pump shaft, hydraulic motor 73 revolving speed and steering.

Finally, the present embodiment also provides a kind of HST operating system being used on the rice transplanter, which will The control of HST7 forward-reverse concentrates in the same handle mechanism with interpolation clutch for clutch control, simplifies structure, is easy to use.It is specific next It says, as shown in figure 13, a kind of HST operating system, including handle mechanism, and for connecting in control gate valve operating device 4 The sensor 91 of driving motor 472, and for connecting the drive rod 92 on HST7.The handle mechanism includes passing through first turn Axis 93 is located in the handle operation panel 94 in rack 11, and the handle on handle operation panel 94 is located in by the second shaft 96 Operating stick 95.The first end of the drive rod 92 is connected on handle operation panel 94, and the second end of drive rod 92 is connected to The variable pump 72 of HST7 drives on end.It records in hydraulic system Ru above-mentioned, and in conjunction with attached drawing 12, is controlled in HST7 in the program The discharge capacity of variable pump 72 is to control output revolving speed and the steering of hydraulic motor 73.The sensor 91 is fixed on handle operation panel On 94, first rotating shaft 93 and the second shaft 96 are perpendicular.The 95 driving handle operation panel 94 of trigger rod is along first rotating shaft 93 rotations, control the HST7.Trigger rod 95 is rotated along the second shaft 96, and can trigger the sensor 91, control Gate valve operating device 4.In the program, HST operating system includes handle mechanism, sensor 91 and drive rod 92, wherein sensor Driving motor 472 in 91 connection control gate valve operating devices 4, drive rod 92 connect HST7.And the handle mechanism includes logical The handle operation panel 94 that first rotating shaft 93 is located in rack 11 is crossed, and handle operation panel 94 is located in by the second shaft 96 On trigger rod 95.By above-mentioned HST operating system, operator on the one hand can 95 driving handle of control crank operating stick behaviour Make plate 94 to rotate along first rotating shaft 93, and then HST7 is controlled by drive rod 92, the row of variable pump 72 in specifically control HST7 Amount is to control output revolving speed and the steering of hydraulic motor 73.On the other hand can trigger rod 95 rotated along the second shaft 96, Trigger sensor 91 in 95 rotation process of trigger rod further controls interpolation clutch to control gate valve operating device 4.

In a further embodiment, it is also connected with reset spring 97 on the lower end of the trigger rod 95, it is multiple The active force of position spring 97 drives the trigger rod 95 to turn along the second shaft 96 to the side for not triggering the sensor 91 It is dynamic.The lower end of the trigger rod 95 is equipped with rotor plate 98, and the second shaft 96 passes through the rotor plate 98, handle operation Bar 95 drives rotor plate 98 to rotate along the second shaft 96.One end of the reset spring 97 is connected on rotor plate 98, the other end It is connected on handle operation panel 94.The rotor plate 98 is equipped with triggering end 981, and triggering end 981 is for triggering the sensor 91, control gate valve operating device 4.In above-mentioned technical proposal, reset spring is also connected on the lower end of trigger rod 95 97, when trigger rod 95 is without other constraints, trigger rod 95 can be made along the second shaft 96 under the action of reset spring 97 It is rotated to the side for not triggering the sensor 91, so that interpolation clutch be made to be in disengaged position, and only in operator by handle When operating stick 95 turns to the triggering sensor 91, interpolation just will do it.It so can avoid under no meaning state, maloperation Caused by interpolation, avoid risk that may be present.

The handle mechanism further includes the HST gear plate 99 being arranged in rack 11, and HST gear plate 99 is equipped with for limiting The gear sliding slot 581 of 95 position of trigger rod processed.The gear sliding slot 581 includes being arranged in parallel with the axis of the second shaft 96 Section 991 of reversing gear, the first forward gear section 992 and the second forward gear section 993, and it is disposed in parallel with the axis of first rotating shaft 93 Interpolation control section 994.The rear end of the first forward gear section 992 and the second forward gear section 993 respectively with interpolation control section 994 Both ends communicate, the interpolation control section between the front end of section of reversing gear 991 and the first forward gear section 992, the second forward gear section 993 994 middle parts communicate.In above scheme, the gear sliding slot 581 on HST gear plate 99 limits 95 position of trigger rod Fixed, the interpolation control section 994 in gear sliding slot 581 is the glissile segment that trigger rod 95 controls interpolation, the interpolation control section 994 Only one end is interpolation position, other positions will not trigger sensor 91, and the first forward gear section 992 and the second forward gear section 993 rear end is communicated with the both ends of interpolation control section 994 respectively, therefore the first forward gear section 992 and the second forward gear section 993 In one be represent rice transplanter move ahead when, the idle state of interpolating portion.Another represent rice transplanter move ahead when, interpolating portion work The state of work.And non-interpolative position is also in the section 991 of reversing gear communicated in the middle part of interpolation control section 994, i.e., it, will not when reversing gear Carry out interpolation process.

In summary technical solution, when which works, operator manipulates the trigger rod in HST operating system 95, i.e., moving ahead, shut down and retreating for controllable rice transplanter power part also can control the clutch of interpolating portion.Specifically when the handle When 95 trigger sensor 91 of operating stick, the operation of driving motor 472 in gate valve operating device 4 drives drive block 46 clockwise It running, first rotating arm 41 drives the rotary plate 32 on gate valve 3 to reset under the action of tension spring 44 in gate valve operating device 4, from And hydraulic fluid port T2 and hydraulic fluid port P in gate valve 3 are communicated, the output quantity of oil cylinder 2 becomes larger, and finally declines seedling platform 12；Meanwhile drive block Interpolation clutch is controlled by linkage mechanism when 46 operation and is adjusted to meshing state, is used for interpolation.In the Interpolation Process, center is floating 54 assembly of plate is fed back according to surface state in real time, draws the second rotating arm 42, while tension spring 44 pulls first rotating arm 41 2 output quantity of oil cylinder is adjusted by gate valve 3 in the case where the second rotating arm 42 and tension spring 44 act on the second rotating arm 42, it is final to adjust 12 height of seedling platform carries out height adjustment according to landform height is automatic, so that the output quantity for controlling oil cylinder 2 adjusts transplanting portion (seedling Platform 12) height, finally guarantee that the depth of each rice transplanting is consistent with height, ensure that the survival rate of rice shoot.When the handle is grasped When making 95 non-trigger sensor 91 of bar, the operation of driving motor 472 in gate valve operating device 4 drives drive block 46 counterclockwise Operation, drive block 46 act on first rotating arm 41 and the rotary plate 32 on gate valve 3 are driven to rotate, make hydraulic fluid port T2 in gate valve 3 with Hydraulic fluid port P closing, hydraulic fluid port A and hydraulic fluid port P, the output quantity of oil cylinder 2 become smaller, and increase seedling platform 12；Meanwhile when the operation of drive block 46 Interpolation clutch is controlled by linkage mechanism and is adjusted to disengaged position, is not available for interpolation.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any One or more embodiment or examples in can be combined in any suitable manner.

Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example Property, it is not considered as limiting the invention, those skilled in the art are not departing from the principle of the present invention and objective In the case where can make changes, modifications, alterations, and variations to the above described embodiments within the scope of the invention.

Claims (10)

1. a kind of rice transplanter, including rack (11), and it is set to the seedling platform (12) on rear side of the rack (11), and driving institute State the oil cylinder (2) of seedling platform (12) lifting, the gate valve (3) of control oil cylinder (2) output quantity, and with the driving gate valve (3) gate valve operating device (4)；It is characterized by:

The gate valve operating device (4) include middle part be connected with the rotary plate (32) of the gate valve (3) and circumferential clocking of turbine rotation First rotating arm (41), and can first rotating arm (41) described in unidirectional drive limiting the second rotation rotated in range Arm (42) and driving assembly；The first end of second rotating arm (42) and the first end of first rotating arm (41) are pivotally connected, Tension spring (44) are connected on pivot end；

The seedling platform (12) is equipped with transplanting depth-adjusting device, including seedling platform bracket (121), and is set to seedling platform bracket (121) central kickboard (54) assembly and the depth on adjust assembly；It includes being located in seedling platform bracket that the depth, which adjusts assembly, (121) shaft on, and the handle (52) of the driving shaft rotation；Center kickboard (54) assembly includes central kickboard (54), central kickboard (54) is connected with the shaft by the first joining beam (55), and central kickboard (54) passes through lanyard assembly (57) the second end of the second rotating arm (42) is connected；It is additionally provided with link mechanism on the seedling platform bracket (121), shaft passes through connection Linkage is connected with the lanyard assembly (57)；The traction end of the lanyard assembly (57) is adjusted with shaft rotation.

2. a kind of rice transplanter according to claim 1, it is characterised in that: the link mechanism include the second joining beam (561), Third joining beam (562), four-bar linkage (563) and movable plate (564)；The movable plate (564) is hingedly arranged in seedling platform bracket (121) on, four-bar linkage (563) is connected on movable plate (564) and rotates synchronously with movable plate (564) along its hinged end D, draws The traction end B of rope component (57) is movably arranged on the upper end of four-bar linkage (563), and the lower end of the second joining beam (561) connects Connect in shaft, the both ends of third joining beam (562) respectively with the upper end of the second joining beam (561) and four-bar linkage (563) It is flexibly connected between lower end；The connecting line of the traction end B of the hinged end D and lanyard assembly (57) of the movable plate (564) with First joining beam (55) is parallel and equal, and the length of the second joining beam (561) is equal to the hinged end D of movable plate (564) to four-bar linkage (563) the distance between lower end tie point C, and when the lower end of the hinged end D of movable plate (564) to four-bar linkage (563) When portion tie point C is in same vertical direction, third joining beam (562) is horizontally disposed.

3. a kind of rice transplanter according to claim 2, it is characterised in that: the middle part of the center kickboard (54) and described the One joining beam (55) is connected, and the front end of central kickboard (54) connects seedling platform (12) elevating control system by lanyard assembly (57) System.

4. a kind of rice transplanter according to claim 1, it is characterised in that: by the first rotation of rotary plate (32) to the second end Pivoted arm (41) be equipped with pin shaft (45), the second rotating arm (42) can single effect in the pin shaft (45) make it is described first rotation Arm (41) one-directional rotation.

5. a kind of rice transplanter according to claim 1, it is characterised in that: the driving component includes drive block (46), with And it is connected on drive block (46) and acts on the driving part that the drive block (46) moves it；The drive block (46) is arranged On the outside of the rotary plate (32) can relative to rotary plate (32) concentric rotation, and can single effect in the first rotating arm (41) first rotating arm (41) are one-directionally rotated.

6. a kind of rice transplanter according to claim 5, it is characterised in that: the drive block (46) is connected by linkage mechanism The interpolation clutch drive rod (401) of rice transplanter；The linkage mechanism includes the swing rod (48) that middle part is hinged on rack (11), And connecting rod (492) component being connected with the first end of the swing rod (48), the end of connecting rod (492) component connect interpolation Clutch drive rod (401)；The second end of the swing rod (48) and the drive block (46) use camming structure fits.

7. a kind of rice transplanter according to claim 6, it is characterised in that: the drive block (46) is equipped with cam path (462), the second end of swing rod (48) is equipped with idler wheel (481)；The second end rolling of swing rod (48) is set to the driving In the cam path (462) of block (46)；And with the rotation of drive block (46), the second end and cam path (462) of swing rod (48) Relative motion, the both ends of cam path (462) are equipped with recess portion (463) for being embedded in and positioning the idler wheel (481).

8. a kind of according to claim 1, rice transplanter described in any one of 4~7, it is characterised in that:

The gate valve (3), including valve body (31), and it is set to the internal rotary plate (32) of valve body (31) and cut-off spool (33)；

Be equipped with rotary valve cavity and cut-off valve chamber in the valve body (31), valve body (31) be equipped with the hydraulic fluid port P communicated with the rotary valve cavity, Hydraulic fluid port A, hydraulic fluid port T1 and hydraulic fluid port T2；Oil circuit between the hydraulic fluid port P and hydraulic fluid port A passes through the rotary valve cavity and the cut-off valve chamber, Cut-off spool (33) is set to that shut-off valve is intracavitary, and for controlling the oil circuit in the oil circuit between rotary valve cavity and hydraulic fluid port A On-off；The rotary plate (32) is set in rotary valve cavity, for synchronously control hydraulic fluid port T1, hydraulic fluid port the T2 oil circuit with hydraulic fluid port P respectively On-off；Hydraulic fluid port T1 and hydraulic fluid port T2 is communicated always by rotary valve cavity.

9. a kind of rice transplanter according to claim 8, it is characterised in that: between the rotary valve cavity wall and rotary plate (32) It constitutes first chamber (313), hydraulic fluid port P, hydraulic fluid port A are communicated with the first chamber (313) of rotary valve cavity；The spool of the rotary plate (32) Set on side wall there are two notch (321), two notches (321) communicate with the first chamber (313), hydraulic fluid port T1, hydraulic fluid port T2 and The first oil circuit connection mouth and the notch (321) between rotary valve cavity are on same axial position；Between two notches (321) Constitute the closure part (322) for blocking the first oil circuit connection mouth between hydraulic fluid port T1, hydraulic fluid port T2 and rotary valve cavity；The rotary valve cavity It is also constituted between inner wall and rotary plate (32) second chamber (314), second chamber (314) is not communicated with first chamber (313)；Oil Mouth T1, hydraulic fluid port T2 are communicated with the second chamber (314) of rotary valve cavity by oil circuit connection.

10. a kind of rice transplanter according to claim 1, it is characterised in that: the rice transplanter is additionally provided with HST operating system, HST operating system includes handle mechanism, and the sensor for connecting the driving part in control gate valve operating device (4) (91), and for connecting the drive rod (92) on HST (7)；The handle mechanism includes being located in by first rotating shaft (93) Handle operation panel (94) in rack (11), and the behaviour of the handle on handle operation panel (94) is located in by the second shaft (96) Make bar (95)；The first end of the drive rod (92) is connected on handle operation panel (94), and sensor (91) is fixed on handle On operation panel (94), first rotating shaft (93) and the second shaft (96) are perpendicular；Trigger rod (95) the driving handle operation Plate (94) is rotated along first rotating shaft (93), controls the HST (7)；Trigger rod (95) is rotated along the second shaft (96), and energy The sensor (91) are enough triggered, further control gate valve operating device (4).