阅读说明：本技术 一种农机自动变速器控制油源块 (A kind of agricultural machinery automatic transmission control oil sources block ) 是由 刘亮 刘亚闪 郝明明 万忠政 刘超 张艳静 于 2019-09-24 设计创作，主要内容包括：本发明公开了一种农机自动变速器控制油源块,包括进油端口P、回油端口T、带旁路的过滤器、液控换向阀、减压阀、蓄能器和两位三通电磁换向阀,所述进油端口P通过液压管路与带旁路的过滤器的进油端口连接,带旁路的过滤器的出油端与液控换向阀的进油端连接,液控换向阀的第上位出口端与减压阀的进油端连接,液控换向阀的第下位出口端与蓄能器的进油端连接,本农机自动变速器控制油源块可以实现电液控换档和强制润滑的双重功能,保证换档过程中换档速度稳定,优先保证档位供给压力油不中断,确保不失去档位,同时大大降低驾驶员的劳动强度和熟练度,特别适用于无人驾驶、遥控驾驶的农机变速系统。(The invention discloses a kind of agricultural machinery automatic transmission to control oil sources block, including oil inlet port P, oil return port T, filter with bypass, pilot operated directional control valve, pressure reducing valve, accumulator and two-bit triplet solenoid directional control valve, the oil inlet port P is connect by fluid pressure line with the oil inlet port of the filter with bypass, the oil outlet of filter with bypass and the oil inlet end of pilot operated directional control valve connect, the upper outlet end of pilot operated directional control valve and the oil inlet end of pressure reducing valve connect, the next outlet end of pilot operated directional control valve and the oil inlet end of accumulator connect, the dual function of electro-hydraulic control gear shift and forced feed lubrication may be implemented in this agricultural machinery automatic transmission control oil sources block, guarantee that shifting speed is stablized in gearshift procedure, it is preferential to guarantee that gear supply pressure oil does not interrupt, ensure not lose gear, the labor intensity and proficiency of driver are substantially reduced simultaneously, it is special It Shi Yongyu not unmanned, remote driving agricultural machinery speed change system.)

1. a kind of agricultural machinery automatic transmission controls oil sources block, it is characterised in that: including oil inlet port P, oil return port T, band bypass Filter (6), pilot operated directional control valve (5), pressure reducing valve (3), accumulator (2) and two-bit triplet solenoid directional control valve (1), the oil inlet Port P is connect by fluid pressure line with the oil inlet port of the filter (6) with bypass, the oil outlet of the filter (6) with bypass It is connect with the oil inlet end of pilot operated directional control valve (5), the next outlet end of pilot operated directional control valve (5) and the oil inlet end of pressure reducing valve (3) connect Connect, the upper outlet end of pilot operated directional control valve (5) is connect with the oil inlet end of accumulator (2), the oil outlet of accumulator (2) with two The next oil inlet end connection of three-way solenoid valve (1), the next oil outlet and the oil return of two-bit triplet solenoid directional control valve (1) Port T connection, the input terminal of the two-bit triplet solenoid directional control valve (1) are electrically connected with the output end of external electric-control system.

2. a kind of agricultural machinery automatic transmission according to claim 1 controls oil sources block, it is characterised in that: the oil inlet port P is connect by second one-way valve (7) with the filter (6) with bypass.

3. a kind of agricultural machinery automatic transmission according to claim 1 controls oil sources block, it is characterised in that: the liquid controlled reversing The upper outlet end of valve (5) is connect by third check valve (9) with the oil inlet end of accumulator (2).

4. a kind of agricultural machinery automatic transmission according to claim 1 controls oil sources block, it is characterised in that: the band bypass The oil outlet of filter (6) is also connected with safety valve (8).

5. a kind of agricultural machinery automatic transmission according to claim 1 controls oil sources block, it is characterised in that: the band bypass The oil inlet end of filter (6) is connect by the first check valve (4) with emergency oil sources (10).

6. a kind of agricultural machinery automatic transmission according to claim 1 controls oil sources block, it is characterised in that: the oil inlet port P, filter (6), pilot operated directional control valve (5) and accumulator (2) with bypass constitute accumulation of energy oil circuit.

7. a kind of agricultural machinery automatic transmission according to claim 1 controls oil sources block, it is characterised in that: the oil inlet port P, filter (6), pilot operated directional control valve (5), accumulator (2) and two-bit triplet solenoid directional control valve (1) with bypass constitute gear and supply Oil circuit.

8. a kind of agricultural machinery automatic transmission according to claim 1 controls oil sources block, it is characterised in that: the oil inlet port P, filter (6), pilot operated directional control valve (5) and pressure reducing valve (3) with bypass constitute lubricant passage way.

9. a kind of agricultural machinery automatic transmission according to claim 4 controls oil sources block, it is characterised in that: the oil inlet port P, filter (6) and safety valve (8) with bypass constitute off-load oil circuit.

Technical field

The present invention relates to transmission technology field, specially a kind of agricultural machinery automatic transmission controls oil sources block.

Background technique

Traditional agricultural machinery relies on manual shift substantially, needs pilot control gear shifting handle, Lai Shixian gearshift procedure, to driving The skilled operation degree of member requires height, and large labor intensity.

Manual transmission usually works under high load capacity as traditional power transmission part, moving component, in addition frequently Impact, is also easy to produce failure brought by gear shift and unreasonable operation.For example, in gearshift procedure, shifting of transmission handle without Method is successfully pushed into corresponding gear, and in vehicle driving up or by jolting road surface, shifting of transmission handle can be suddenly from certain A gear skips to neutral gear automatically, causes power interruption, or there are random shelves.

Summary of the invention

The technical problem to be solved by the present invention is to overcome the existing defects, provides a kind of agricultural machinery automatic transmission control oil sources The dual function of electro-hydraulic control gear shift and forced feed lubrication may be implemented in block, guarantees that shifting speed is stablized in gearshift procedure, preferential to guarantee Gear supply pressure oil does not interrupt, it is ensured that does not lose gear, while substantially reducing the labor intensity and proficiency of driver, especially Suitable for unmanned, remote driving agricultural machinery speed change system, the problems in background technique can be effectively solved.

To achieve the above object, the invention provides the following technical scheme: a kind of agricultural machinery automatic transmission controls oil sources block, packet It includes oil inlet port P, oil return port T, changed with filter, pilot operated directional control valve, pressure reducing valve, accumulator and the two-bit triplet electromagnetism bypassed To valve, the oil inlet port P is connect by fluid pressure line with the oil inlet port of the filter with bypass, the filter with bypass The connection of the oil inlet end of oil outlet and pilot operated directional control valve, the next outlet end of pilot operated directional control valve and the oil inlet end of pressure reducing valve connect, The upper outlet end of pilot operated directional control valve and the oil inlet end of accumulator connect, the oil outlet and two-bit triplet electromagnetic switch of accumulator The next oil outlet of the next oil inlet end connection of valve, two-bit triplet solenoid directional control valve is connect with oil return port T, and described two The input terminal of three-way solenoid valve is electrically connected with the output end of external electric-control system.

As a preferred technical solution of the present invention, the oil inlet port P passes through second one-way valve and the mistake with bypass Filter connection.

As a preferred technical solution of the present invention, the upper outlet end of the pilot operated directional control valve is unidirectional by third The connection of the oil inlet end of valve and accumulator.

As a preferred technical solution of the present invention, the oil outlet of the filter of the band bypass is also connected with safety Valve.

As a preferred technical solution of the present invention, the oil inlet end of the filter of the band bypass passes through the first check valve It is connect with emergency oil sources.

As a preferred technical solution of the present invention, the oil inlet port P, the filter with bypass, pilot operated directional control valve Accumulation of energy oil circuit is constituted with accumulator.

As a preferred technical solution of the present invention, the oil inlet port P, with bypass filter, pilot operated directional control valve, Accumulator and two-bit triplet solenoid directional control valve constitute gear oil feeding line.

As a preferred technical solution of the present invention, the oil inlet port P, the filter with bypass, pilot operated directional control valve Lubricant passage way is constituted with pressure reducing valve.

As a preferred technical solution of the present invention, the oil inlet port P, the filter with bypass and safety valve are constituted Off-load oil circuit.

Compared with prior art, the beneficial effects of the present invention are: the control oil sources block design of this agricultural machinery automatic transmission is reasonable, Of a tightly knit structure, the dual function that electro-hydraulic control gear shift and forced feed lubrication may be implemented works as filtering by the way that the filter with bypass is arranged Device block when, can by the check valve of bypass carry out fuel feeding, ensure gear control and lubrication pressure oil not reduce, not in Disconnected, the safety of effective protection speed changer and operator, pilot operated directional control valve plays pressure-gradient control valve, preferentially guarantees to gear fuel feeding Oil circuit supply pressure oil, it is ensured that do not lose gear, guarantee that power transmission is not interrupted, by the way that the control of two-bit triplet solenoid directional control valve is arranged Gear shifting hydraulic processed oil into and out of oil circuit, can be realized gear control fuel feeding, emergency braking oil-break makes transmission neutral, further Sound assurance is generated to the safety of equipment and personnel, the setting of accumulator can reduce impact caused by DFF Direct Fuel Feed, play Damping, the effect of buffering, the effective stability for guaranteeing control oil sources block work.

Detailed description of the invention

Fig. 1 is principle schematic diagram of the present invention.

In figure: 1 two-bit triplet solenoid directional control valve, 2 accumulators, 3 pressure reducing valves, 4 first check valves, 5 pilot operated directional control valves, 6 bands The filter of bypass, 7 second one-way valves, 8 safety valves, 9 third check valves, 10, emergency oil sources.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.

Referring to Fig. 1, the present invention provides a kind of technical solution: a kind of agricultural machinery automatic transmission control oil sources block, including into Oily port P, oil return port T, filter 6, pilot operated directional control valve 5, pressure reducing valve 3, accumulator 2 and two-bit triplet electromagnetism with bypass change To valve 1, oil inlet port P is connect by fluid pressure line with the oil inlet port of the filter 6 with bypass, the filter 6 with bypass Oil inlet end is connect by the first check valve 4 with emergency oil sources 10, and oil inlet port P passes through second one-way valve 7 and the filtering with bypass Device 6 connects, and the setting of the first check valve 4, second one-way valve 7 and oil sources 10 of meeting an urgent need can guarantee that vehicle failure cannot be timely When fuel feeding, can by emergency oil sources 10 carry out fuel feeding, come maintain vehicle working portion lubrication, reduce workpiece between The oil outlet of abrasion, the filter 6 with bypass is connect with the oil inlet end of pilot operated directional control valve 5, the oil outlet of the filter 6 with bypass It is also connected with safety valve 8, the setting of safety valve 8, in hydraulic system fault, safety valve 8 is in access, maximum pressure is limited, Play the role of safeguard protection, it is ensured that speed changer does not damage, and the upper outlet end of pilot operated directional control valve 5 passes through third check valve 9 Connect with the oil inlet end of accumulator 2, the setting of third check valve 9 ensures that pressure is constant in accumulator 2, gearshift control pressure not by The next outlet end of the influence fluctuated to charge oil pressure, pilot operated directional control valve 5 is connect with the oil inlet end of pressure reducing valve 3, liquid controlled reversing The upper outlet end of valve 5 is connect with the oil inlet end of accumulator 2, oil outlet and the two-bit triplet solenoid directional control valve 1 of accumulator 2 The next oil outlet of the next oil inlet end connection, two-bit triplet solenoid directional control valve 1 is connect with oil return port T, two-bit triplet electricity The input terminal of magnetic reversal valve 1 is electrically connected with the output end of external electric-control system, oil inlet port P, the filter 6 with bypass, hydraulic control Reversal valve 5 and accumulator 2 constitute accumulation of energy oil circuit, oil inlet port P, the filter 6 with bypass, pilot operated directional control valve 5,2 and of accumulator Two-bit triplet solenoid directional control valve 1 constitutes gear oil feeding line, and filter 6 that oil inlet port P, band bypass and subtracts pilot operated directional control valve 5 Pressure valve 3 constitutes lubricant passage way, and oil inlet port P, the filter 6 with bypass and safety valve 8 constitute off-load oil circuit, this agricultural machinery becomes automatically Fast device control oil sources block design is rationally, of a tightly knit structure, and the dual function of electro-hydraulic control gear shift and forced feed lubrication may be implemented, effectively protect The safety for protecting speed changer and operator, reduces the labor intensity and proficiency of driver, at the same especially suitable for it is unmanned, The agricultural machinery speed change system of remote driving.

When in use: this transmission oil source block is mounted between quantitative oil pump and electrichydraulic control automatic transmission, pressure oil Source enters oil sources block from oil inlet port P, flows to the filter 6 with by-passing valve through second one-way valve 7, filters out pressure well cuts And oil cleanliness is improved, third check valve 9 is entered by the bottom of pilot operated directional control valve 5, and then fill to 2 fuel feeding of accumulator Pressure, when oil pressure reaches setting value in accumulator 2, pilot operated directional control valve 5 is pushed into upper working position by the thrust that pressure oil generates, and is completed Forced feed lubrication is carried out to speed changer to the filling liquid of accumulator 2, while under the action of pressure reducing valve 3.

When not needing gear shift, by the spring force of two-bit triplet solenoid directional control valve 1, return two-bit triplet solenoid directional control valve 1 To the next, in-line disconnection at this time, to 2 pressure maintaining of accumulator, noenergy loss；External transmission control valve group is come simultaneously Gear control oil connected with fuel tank, speed changer is maintained at neutral position；When needing to carry out gear shift, electric-control system is to two-bit triplet The electromagnetism end of solenoid directional control valve 1 issues shift signal, so that two-bit triplet solenoid directional control valve 1 is in the upper, gives external transmission Gear control valve group fuel feeding, gear where being controlled through external transmission gear control valve group.

When vehicle variables pumping system fault-free, pressure oil-source gives system supply pressure oil, second one-way valve from oil inlet port P 7 is in the conductive state, the first check valve 4 not fuel feeding and prevent oil liquid flow through the first check valve 4；When due to hydraulic pump or its power When failure normally cannot provide hydraulic oil to system, by meeting an urgent need, oil sources 10 provides a system to pressure oil, and the first check valve 4 is in On state, second one-way valve 7 are in closed state, work normally at this point, ensuring to lubricate by emergency oil fuel feeding with gear.

The present invention has rational design, of a tightly knit structure, and the dual function of electro-hydraulic control gear shift and forced feed lubrication may be implemented, effectively protect The safety for protecting speed changer and operator, reduces the labor intensity and proficiency of driver, at the same especially suitable for it is unmanned, The agricultural machinery speed change system of remote driving, improves ease of use；The setting of pilot operated directional control valve 5 preferentially guarantees to gear fuel feeding oil Road supply pressure oil, it is ensured that do not lose gear, guarantee that power transmission is not interrupted, improve ease of use.

It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding And modification, the scope of the present invention is defined by the appended.