CN106438530A - Orchard straw mulching machine hydraulic system - Google Patents

Abstract

The invention discloses a hydraulic system of an orchard straw covering machine, which belongs to the technical field of orchard machinery hydraulic drive. It consists of three parts: main oil circuit, driving oil circuit and lifting oil circuit; the main oil circuit includes hydraulic oil tank, filter, oil pump and overflow valve; the driving oil circuit includes three-position four-way manual reversing valve I, three-position four-way Manual reversing valve Ⅱ, one-way throttle valve Ⅰ, one-way throttle valve Ⅱ, hydraulic motor of unloading roller and hydraulic motor of covering mechanism; lifting oil circuit includes hydraulic tilting cylinder Ⅰ, hydraulic tilting cylinder Ⅱ, hydraulic lifting cylinder Ⅰ. Hydraulic lift cylinder Ⅱ, three-position four-way manual reversing valve III, three-position four-way manual reversing valve IV and hydraulic oil tank. The system can realize the tilting of the straw material box of the orchard straw mulching machine, automatic unloading of straw and other materials, straw covering, lifting of the covering mechanism, soil lifting and uniform soil covering operations.

Description

A hydraulic system of an orchard straw covering machine

technical field

The invention discloses a hydraulic system for an orchard straw covering machine, which belongs to the field of orchard machinery equipment, and particularly relates to the field of hydraulic system of orchard machinery equipment.

Background technique

With the adjustment of my country's agricultural industrial structure, the scale of the fruit industry has developed rapidly. The planting area of apples, pears, peaches, grapes, and citrus has reached the first place in the world. my country has become a big country in the fruit industry. Orchard straw mulching technology is a soil management technology adopted for orchards with thin soil layer, low fertility, poor water conditions and large bare soil area. Covering the bare soil around the fruit trees with an appropriate amount of crop straw, etc., it has multiple effects such as moisture conservation, water saving, improvement of soil organic matter content, weed suppression, heat preservation, no-tillage, labor saving and prevention of soil loss, and can improve soil ecology Microenvironment, root and tree growth, promote tree growth and development, thereby increasing yield and improving quality.

In recent years, orchard straw technology has been vigorously promoted in my country. However, the existing orchard straw mulching technology is simple and requires manual work, which is labor-intensive and time-consuming. In addition, fruit farmers are worried about orchard fires in dry seasons, resulting in low enthusiasm for fruit farmers and a small promotion area. ,With little success. With the promotion of fruit dwarfing technology, especially the intensive cultivation technology of dwarf apples in my country, the orchard has spacious rows and standardized tree shapes, which will facilitate the mechanization of orchard covering operations.

With the deepening of the research on orchard straw mulching operation machinery, a series of technical orchard straw mulching machine technologies have been applied. These technologies have solved the problems of the existing orchard straw mulching techniques that are simple, labor-intensive and time-consuming, and have reduced operating costs and improved productivity. Fruit production and benefits have promoted the application of straw mulching technology in orchards. However, most of the operating tools of the existing orchard straw mulching machines adopt the suspension type scheme, and the supporting power is a diesel engine, which is generally installed in front of the vehicle. If a mechanical transmission is used to provide power for the operating mechanism, the transmission chain is complicated and the transmission distance is long. low efficiency.

A hydraulic system of an orchard straw mulching machine disclosed by the present invention uses a hydraulic motor as a power source to drive the unloading roller and the soil covering mechanism of the orchard straw mulching machine to work, and uses a hydraulic cylinder to adjust the height of the straw material box 20 and the suspended soil covering mechanism. It outputs sufficient and stable power for the operating mechanism of the mulching machine, with adjustable speed and high transmission efficiency, and greatly simplifies the transmission structure, increases the controllability of the orchard straw mulching machine, and improves the operation quality.

Contents of the invention

The purpose of the present invention: to disclose a hydraulic system of an orchard straw mulching machine, which can simplify the transmission structure of the orchard straw mulching machine, have stable transmission, and adjustable speed, improve the operating efficiency and performance of the orchard straw mulching machine, and provide a wide promotion for the orchard straw mulching machine Provide convenience.

The technical problem to be solved by the invention is: how to provide power for orchard straw covering and machine, simplify the transmission structure and improve its transmission efficiency and stability.

In order to solve the technical problem to be solved in the present invention, the present invention provides the following technical solutions:

A hydraulic system for an orchard straw mulching machine, characterized in that it includes a main oil circuit 17, a driving oil circuit 18 and a lifting oil circuit 19; the main oil circuit 17 includes a hydraulic oil tank 16, a filter 1, an oil pump 2 and an overflow valve 3. The drive oil circuit 18 includes the three-position four-way manual reversing valve I4, the three-position four-way manual reversing valve II5, the one-way throttle valve I6, the one-way throttle valve II7, and the unloading roller hydraulic motor 8 and the hydraulic motor 9 of the soil-covering mechanism; the lifting oil circuit 19 includes two pairs of single-rod single-acting hydraulic cylinders, namely hydraulic tilting cylinder I10 and hydraulic tilting cylinder II11, hydraulic lifting cylinder I12 and hydraulic lifting cylinder II13, three-position four Through manual reversing valve III14, three-position four-way manual reversing valve IV15 and hydraulic oil tank 16, hydraulic tilting cylinder I10, hydraulic tilting cylinder II11, hydraulic lifting cylinder I12 and hydraulic lifting cylinder II are telescopic hydraulic cylinders.

The hydraulic tilting cylinder Ⅰ10 and the hydraulic tilting cylinder Ⅱ11 are installed on the frame 22, and their upper and lower sides are respectively hinged with the straw material box 20 and the vehicle frame 22. °.

The hydraulic lift cylinder I12 and the hydraulic lift cylinder II13 are respectively placed on the frame 22 on both sides of the crawler vehicle 23, and are fixed and installed horizontally along the front and rear directions of the crawler vehicle 23. Both ends are always kept horizontal; the hydraulic oil tank 16 in the main oil circuit 17 is located at the front of the vehicle body, a filter 1 is arranged behind the hydraulic oil tank 16 , and an overflow valve 3 is arranged on the main oil circuit 17 .

The hydraulic motor 8 of the unloading roller and the hydraulic motor 9 of the covering mechanism are arranged in parallel, the hydraulic motor 8 of the unloading roller is installed on the frame 22 under the rear part of the straw bin 20, and the hydraulic motor 9 of the covering mechanism is installed on the covering mechanism 21 on the rack.

A hydraulic system for an orchard straw mulching machine, characterized in that the hydraulic oil output by the oil pump 2 is input to the hydraulic motor 8 of the lower material roller through the three-position four-way manual reversing valve II5, and drives the hydraulic motor 8 of the lower material roller to work, thereby Provide power for the blanking roller of the covering machine; a one-way throttle valve II7 is set between the three-position four-way manual reversing valve II5 and the hydraulic motor 8 of the blanking roller to adjust the working speed of the hydraulic motor 8 of the blanking roller.

The hydraulic oil output by the oil pump 2 is input to the hydraulic motor 9 of the soil covering mechanism through the three-position four-way manual reversing valve I4 and the one-way throttle valve I6, and drives the hydraulic motor 9 of the soil covering mechanism to work, thereby providing power for the soil covering mechanism of the covering machine; A one-way throttle valve I6 is set between the three-position four-way manual reversing valve I4 and the hydraulic motor 9 of the soil-covering mechanism to adjust the working speed of the hydraulic motor 9 of the soil-covering mechanism.

The one-way throttle valve I6 and the one-way throttle valve II7 are flow control valves, which control the speeds of the hydraulic motor 8 of the unloading roller and the hydraulic motor 9 of the soil-covering mechanism by adjusting the flow rate, thereby controlling the straw bin 20 and the soil-covering mechanism 21 working speed.

A hydraulic system for an orchard straw mulching machine, characterized in that the hydraulic tilting cylinder I10 and the hydraulic tilting cylinder II11 are symmetrically hinged on the frame of the mulching machine below the middle of the straw material box 20, and the hydraulic tilting cylinder I10 and A three-position four-way manual reversing valve IV15 is installed between the hydraulic tilting cylinder II11 and the oil pump to control the working states of the hydraulic tilting cylinder I10 and II11 of elongation, stop and contraction.

The oil pump 2 outputs hydraulic oil, the three-position four-way manual reversing valve IV15 is located at the oil supply level, and the hydraulic oil is input into the hydraulic tilting cylinder I10 and the hydraulic tilting cylinder II11 arranged symmetrically in parallel, the hydraulic tilting cylinder I10 and the hydraulic tilting cylinder The tilting cylinder II11 is extended synchronously, so that the straw material box 20 of the soil covering machine is tilted backward. When the straw material box 20 reaches the required height, the three-position four-way manual reversing valve IV15 is adjusted to the stop position, and the hydraulic tilting oil cylinder I10 Keep the existing length with the hydraulic tipping oil cylinder II11. After the work is completed, the three-position four-way manual reversing valve IV15 is transferred to the oil return level, and the straw hopper 20 falls to a horizontal position under the action of self-weight.

The hydraulic lifting cylinder I12 and the hydraulic lifting cylinder II13 are installed under the straw material box 20 to cover the left and right sides of the middle part of the locomotive frame, and a three-position four-way manual reversing valve III14 is set between the hydraulic lifting cylinder I12 and the oil pump Control the working state of the extension, stop and contraction of hydraulic lifting cylinder Ⅰ12 and hydraulic lifting cylinder Ⅱ13.

The oil pump 2 outputs hydraulic oil, the three-position four-way manual reversing valve III14 is located at the oil supply level, and the hydraulic oil is input into the hydraulic lifting cylinder I12 arranged symmetrically in parallel, and the hydraulic lifting cylinder II13 is synchronously extended. , so that the covering mechanism 21 is lifted upwards, and the covering machine is in the non-operating state at this time; when in operation, the three-position four-way manual reversing valve III14 is at the oil return level, the hydraulic lifting cylinder I12 and the hydraulic lifting cylinder II13 contract, and the covering mechanism 21 due to its own weight The function falls to carry out the work.

A hydraulic system for an orchard straw mulching machine, characterized in that the hydraulic motor 8 of the unloading roller and the hydraulic motor 9 of the soil covering mechanism can pass through the three-position four-way manual reversing valve I5 and the three-position four-way manual reversing valve II4 respectively. Reverse rotation is realized to remove the blockage when the blanking roller or the soil covering mechanism 21 are blocked.

A hydraulic system of an orchard straw mulching machine, characterized in that the hydraulic system of the orchard straw mulching machine can output sufficient and stable power for the operating mechanism of the mulching machine, and has many advantages such as simple transmission structure, adjustable speed, and high transmission efficiency, increasing It improves the controllability of the orchard straw mulching machine and improves the operation quality.

A hydraulic system of an orchard straw mulching machine, the working principle of which is as follows:

The hydraulic system of an orchard straw mulching machine according to the present invention can provide power for the orchard straw mulching machine, simplify the transmission structure and improve its high transmission efficiency and stability. The specific working principle is as follows:

When the orchard straw mulching machine is working, the engine drives the oil pump to supply oil to the whole system. The hydraulic motor of the unloading roller and the hydraulic motor of the covering mechanism are arranged in parallel. By opening and closing the hydraulic motor of the unloading roller and the hydraulic motor of the covering mechanism A four-way manual reversing valve is used to control its rotation, and a one-way throttle valve is used to control the motor speed to adjust the speed of the working parts of the covering machine. The tilting of the straw material box and the lifting of the soil covering mechanism are realized by two pairs of single-acting hydraulic cylinders, and the tilting angle of the straw material box and the soil covering mechanism are controlled by the three-position four-way manual reversing valve on the respective oil lines of the straw material box and the soil covering mechanism. The height of the mechanism is adjusted.

Beneficial technical effects: the hydraulic system of an orchard straw mulching machine disclosed by the present invention uses a hydraulic motor to drive the operation of the working parts of the mulching machine through hydraulic transmission, and uses a hydraulic cylinder to lift the straw material box and the soil covering mechanism. The operating mechanism outputs sufficient and stable power, has many advantages such as simple transmission structure, adjustable speed, and high transmission efficiency, which increases the controllability of the orchard straw mulching machine and improves the operation quality.

reference sign

1. Filter 2. Oil pump 3. Relief valve 4. Three-position four-way manual reversing valve I 5. Three-position four-way manual reversing valve II 6. One-way throttle valve I 7. One-way throttle II 8. Hydraulic motor for feeding roller 9. Hydraulic motor for covering mechanism 10. Hydraulic tilting cylinder Ⅰ 11. Hydraulic tilting cylinder Ⅱ 12. Hydraulic lifting cylinder Ⅰ 13. Hydraulic lifting cylinder Ⅱ 14. Three-position four-way manual reversing valve III 15. Three-position four-way manual reversing valve IV 16. Hydraulic oil tank 17. Main oil circuit 18. Driving oil circuit 19. Lifting oil circuit 20. Straw material box 21. Soil covering mechanism.

Description of drawings

Fig. 1 Structural diagram of the hydraulic system of an orchard straw mulching machine

Figure 2 The left side view of a simplified structure of an orchard straw mulching machine

Figure 3 The right side view of a simplified structure of an orchard straw mulching machine

Implementation

This embodiment is the power transmission of the working parts on the orchard straw covering machine.

As shown in Figure 1, a hydraulic system of an orchard straw mulching machine is characterized in that it includes a main oil circuit 17, a driving oil circuit 18 and a lifting oil circuit 19; the main oil circuit 17 includes a hydraulic oil tank 16 filter 1, Oil pump 2 and relief valve 3; the drive oil circuit 18 includes three-position four-way manual reversing valve I4, three-position four-way manual reversing valve II5, one-way throttle valve I6, one-way throttle valve II7, The hydraulic motor 8 of the unloading roller and the hydraulic motor 9 of the covering mechanism; the lifting oil circuit 19 includes two pairs of single-rod single-acting hydraulic cylinders, namely, the hydraulic tilting cylinder I10 and the hydraulic tilting cylinder II11, the hydraulic lifting cylinder I12 and the hydraulic lifting cylinder Oil cylinder II13, three-position four-way manual reversing valve III14, three-position four-way manual reversing valve IV15 and hydraulic oil tank 16, including hydraulic tilting cylinder I10, hydraulic tilting cylinder II11, hydraulic lifting cylinder I12, hydraulic lifting cylinder II It is a telescopic hydraulic cylinder.

As shown in Figure 2 and Figure 3, the hydraulic tilting cylinder I10 and the hydraulic tilting cylinder II11 are installed on the frame 22, and their upper and lower sides are respectively hinged with the straw material box 20 and the frame 22, and their movable strokes can ensure that the straw material Case 20 tilts backwards not less than 45°.

As shown in Figure 2 and Figure 3, the hydraulic lift cylinder I12 and the hydraulic lift cylinder II13 are respectively placed on the frame 22 on both sides of the crawler vehicle 23, and are fixed and installed horizontally along the front and rear directions of the crawler vehicle 23. The telescopic length and installation position of the two It is necessary to ensure that the two ends of the earth covering mechanism 21 are kept horizontal all the time; the hydraulic oil tank 16 in the main oil circuit 17 is located at the front of the vehicle body, and a filter 1 is arranged behind the hydraulic oil tank 16, and an overflow is set on the main oil circuit 17. flow valve 3.

As shown in Figures 1 and 2, the hydraulic motor 8 of the unloading roller and the hydraulic motor 9 of the covering mechanism are arranged in parallel, the hydraulic motor 8 of the unloading roller is installed on the vehicle frame 22 below the rear part of the straw bin 20, and the hydraulic motor 9 of the overburden mechanism is arranged in parallel. Mechanism hydraulic motor 9 is installed on the frame of soil covering mechanism 21 .

As shown in Figure 1, a hydraulic system of an orchard straw mulching machine is characterized in that the hydraulic oil output by the oil pump 2 is input to the hydraulic motor 8 of the feeding roller through the three-position four-way manual reversing valve II5 to drive the feeding roller The hydraulic motor 8 works to provide power for the blanking roller of the covering machine; the one-way throttle valve II7 is set between the three-position four-way manual reversing valve II5 and the hydraulic motor 8 of the blanking roller to adjust the hydraulic motor of the blanking roller 8 working speeds.

As shown in Figure 1, the hydraulic oil output by the oil pump 2 is input into the hydraulic motor 9 of the soil covering mechanism through the three-position four-way manual reversing valve I4 and the one-way throttle valve I6, and drives the hydraulic motor 9 of the soil covering mechanism to work, thereby providing The earth-covering mechanism of the machine provides power; the one-way throttle valve I6 is set between the three-position four-way manual reversing valve I4 and the hydraulic motor 9 of the earth-covering mechanism to adjust the working speed of the hydraulic motor 9 of the earth-covering mechanism.

As shown in Figure 1, the one-way throttle valve I6 and the one-way throttle valve II7 are flow control valves, which control the speed of the hydraulic motor 8 of the feeding roller and the hydraulic motor 9 of the covering mechanism by adjusting the flow rate respectively, thereby controlling the flow rate of the straw. The working speed of material box 20 and earth-covering mechanism 21.

As shown in Fig. 1, Fig. 2 and Fig. 3, a hydraulic system of an orchard straw mulching machine is characterized in that the hydraulic tilting cylinder I10 and the hydraulic tilting cylinder II11 are symmetrically hinged to the cover under the middle part of the straw material box 20 On the locomotive frame, a three-position four-way manual reversing valve IV15 is installed between the hydraulic tilting cylinder I10 and II11 and the oil pump to control the elongation, stop and Contracted working condition.

As shown in Figure 1 and Figure 2, the oil pump 2 outputs hydraulic oil, the three-position four-way manual reversing valve IV15 is located at the oil supply level, and the hydraulic oil is input into the hydraulic tilting cylinder I10 and hydraulic tilting cylinder II11 arranged symmetrically in parallel , the hydraulic tilting cylinder Ⅰ10 and the hydraulic tilting cylinder Ⅱ11 are extended synchronously, so that the straw material box 20 of the soil covering machine is tilted backward. When the straw material box 20 reaches the required height, the three-position four-way manual reversing valve IV15 is adjusted To the stop position, the hydraulic tilting cylinder I10 and the hydraulic tilting cylinder II11 are kept at the existing length. After the work is completed, the three-position four-way manual reversing valve IV15 is adjusted to the oil return level, and the straw material box 20 is lowered under the action of its own weight. horizontal position.

As shown in Figure 1, Figure 2 and Figure 3, the hydraulic lifting cylinder I12 and the hydraulic lifting cylinder II13 are installed below the straw material box 20 to cover the left and right sides of the middle part of the locomotive frame, and the hydraulic lifting cylinder I12 and the oil pump A three-position four-way manual reversing valve III14 is arranged between them to control the working states of the elongation, stop and contraction of the hydraulic lifting cylinder I12 and the hydraulic lifting cylinder II13.

As shown in Figure 1, Figure 2 and Figure 3, the oil pump 2 outputs hydraulic oil, the three-position four-way manual reversing valve III14 is located at the oil supply level, and the hydraulic oil is input into the hydraulic lifting cylinder I12 arranged symmetrically in parallel and hydraulic lifting cylinder II13 , the hydraulic lifting cylinder Ⅰ12 and the hydraulic lifting cylinder Ⅱ13 elongate synchronously, so that the covering mechanism 21 is lifted upwards, and the covering machine is in a non-operating state at this time; during operation, the three-position four-way manual reversing valve III14 is at the oil return level, and the hydraulic lifting cylinder Ⅰ12 hydraulic lift cylinder Ⅱ13 shrinks, and the soil-covering mechanism 21 falls due to its own weight to perform operations.

A hydraulic system for an orchard straw mulching machine, characterized in that the hydraulic motor 8 of the unloading roller and the hydraulic motor 9 of the soil covering mechanism can pass through the three-position four-way manual reversing valve I5 and the three-position four-way manual reversing valve II4 respectively. Reverse rotation is realized to remove the blockage when the blanking roller or the soil covering mechanism 21 are blocked.

The hydraulic system of the orchard straw mulching machine is characterized in that the hydraulic system of the orchard straw mulching machine can output sufficient and stable power for the mulching machine operating mechanism, and has many advantages such as simple transmission structure, adjustable speed, and high transmission efficiency. Advantages, increase the controllability of the orchard straw mulching machine and improve the quality of operation.

In this embodiment, the oil pump 2 is a CB-FE25E gear pump, the overflow valve 3 is a YF-L20H4-S type pilot relief valve, the one-way throttle valve I6 and the one-way throttle valve II7 are KC- Type 02, hydraulic motor for feeding roller 8 is BMR-125 type linear pendulum motor, hydraulic motor 9 for covering mechanism is BMR-100 type linear pendulum motor, hydraulic tilting cylinder Ⅰ10 and hydraulic tilting cylinder Ⅱ11 are 3TG-E80×340 Telescopic hydraulic cylinder, hydraulic lifting cylinder I12 and hydraulic lifting cylinder II (13) are 2TG-E60×250 telescopic hydraulic cylinders.

Further explain the working principle of the hydraulic system of a kind of orchard straw mulching machine according to the present invention:

The hydraulic system of an orchard straw mulching machine according to the present invention can provide power for the orchard straw mulching machine, simplify the transmission structure and improve its high transmission efficiency and stability. The specific working principle is as follows:

When the orchard straw mulching machine is working, the engine drives the oil pump to supply oil to the whole system. The hydraulic motor of the unloading roller and the hydraulic motor of the covering mechanism are arranged in parallel. By opening and closing the hydraulic motor of the unloading roller and the hydraulic motor of the covering mechanism A four-way manual reversing valve is used to control its rotation, and a one-way throttle valve is used to control the motor speed to adjust the speed of the working parts of the covering machine. The tilting of the straw material box and the lifting of the soil covering mechanism are realized by two pairs of single-acting hydraulic cylinders, and the tilting angle of the straw material box and the soil covering mechanism are controlled by the three-position four-way manual reversing valve on the respective oil lines of the straw material box and the soil covering mechanism. The height of the mechanism is adjusted.

The following 3 points need special explanation:

1. The hydraulic system of the orchard straw mulching machine of the present invention uses a hydraulic motor to drive the operation of the working parts of the mulching machine through hydraulic transmission, and uses a hydraulic cylinder to lift the straw material box and the soil covering mechanism, which solves the problem of the transmission of the orchard straw mulching machine. The problem of complex chain and long transmission distance can output sufficient and stable power for the operation mechanism of the mulching machine. It has many advantages such as simple transmission structure, adjustable speed and high transmission efficiency, which increases the controllability of the orchard straw mulching machine and improves the operation quality. .

2. The hydraulic system of an orchard straw mulching machine of the present invention is not only suitable for orchard straw mulching machines, but also suitable for other operating machines whose engines and working tools are far away and not suitable for mechanical transmission.

3. In order to clearly illustrate the technical solution, the specification and drawings of the present invention give some details of the technical solution, and these details do not limit the claims of the present invention. Any deformation or modification made to these details shall not go beyond the protection scope of the claims of the present invention.

Claims (4)

1. a kind of orchard improving straw mulching machine hydraulic system is it is characterised in that include working connection（17）, drive oil circuit（18）And lifting Oil circuit（19）；Described working connection（17）Including hydraulic oil container（16）Filter（1）, oil pump（2）And overflow valve（3）；Described Drive oil circuit（18）Including 3-position 4-way hand-operated direction valve I（4）, 3-position 4-way hand-operated direction valve II（5）, one-way throttle valve I （6）, one-way throttle valve II（7）, material blanking roller hydraulic motor（8）With casing mechanism hydraulic motor（9）；Described lifting oil circuit （19）Including two to single pole single-action hydraulic cylinder, i.e. hydraulic pressure dump cylinder I（10）With hydraulic pressure dump cylinder II（11）, hydraulic lifting Oil cylinder I（12）With hydraulic lifting oil cylinder II（13）, 3-position 4-way hand-operated direction valve III（14）, 3-position 4-way hand-operated direction valve IV （15）And hydraulic oil container（16）, wherein hydraulic pressure dump cylinder I（10）, hydraulic pressure dump cylinder II（11）, hydraulic lifting oil cylinder I （12）, hydraulic lifting oil cylinder II be telescoping hydraulic cylinder；

Hydraulic pressure dump cylinder I（10）, hydraulic pressure dump cylinder II（11）It is installed on vehicle frame（22）On, its upper and lower respectively with stalk material Case（20）And vehicle frame（22）Hinged, its active strokes can guarantee that stalk hopper（20）Tumble backward not less than 45 °；

Hydraulic lifting oil cylinder I（12）With hydraulic lifting oil cylinder II（13）It is respectively placed in creeper truck（23）The vehicle frame of both sides（22）On, Along creeper truck（23）Fore-and-aft direction level fixedly mounts, and both collapsing lengths and installation site will ensure casing mechanism（21）Rise During fall, its two ends remains horizontality；Described working connection（17）In hydraulic oil container（16）Positioned at body forward structure, hydraulic pressure Fuel tank（16）Filter is set afterwards（1）, in working connection（17）Upper setting overflow valve（3）；

Described material blanking roller hydraulic motor（8）With casing mechanism hydraulic motor（9）For being arranged in parallel, material blanking roller hydraulic motor（8） It is installed on stalk hopper（20）The vehicle frame of lower rear（22）On, casing mechanism hydraulic motor（9）It is installed on casing mechanism（21） Frame on.

2. a kind of orchard improving straw mulching machine hydraulic system according to claim 1 is it is characterised in that described oil pump（2） The hydraulic oil of output is through 3-position 4-way hand-operated direction valve II（5）Input material blanking roller hydraulic motor（8）, drive material blanking roller hydraulic pressure horse Reach（8）Work, thus provide power for covering machine material blanking roller；Described 3-position 4-way hand-operated direction valve II（5）With material blanking roller liquid Pressure motor（8）Between arrange one-way throttle valve II（7）To adjust material blanking roller hydraulic motor（8）Operating rate；

Described oil pump（2）The hydraulic oil of output is through 3-position 4-way hand-operated direction valve I（4）With one-way throttle valve I（6）Input Casing mechanism hydraulic motor（9）, drive casing mechanism hydraulic motor（9）Work, thus provide power for covering machine casing mechanism； Described 3-position 4-way hand-operated direction valve I（4）With casing mechanism hydraulic motor（9）Between arrange one-way throttle valve I（6）To adjust Casing mechanism hydraulic motor（9）Operating rate；

Described one-way throttle valve I（6）With one-way throttle valve II（7）For flow control valve, pass through respectively to adjust under flow control Material roller hydraulic motor（8）With casing mechanism hydraulic motor（9）Rotating speed, thus controlling stalk hopper（20）And casing mechanism（21） Operating rate.

3. a kind of orchard improving straw mulching machine hydraulic system according to claim 1 is it is characterised in that described hydraulic pressure is tumbled Oil cylinder I（10）With hydraulic pressure dump cylinder II（11）Symmetrically it is articulated with stalk hopper（20）On the covering locomotive frame of middle part lower section, Hydraulic pressure dump cylinder I（10）With hydraulic pressure dump cylinder II（11）3-position 4-way hand-operated direction valve IV is installed and oil pump between（15）, Control hydraulic pressure dump cylinder I（10）With hydraulic pressure dump cylinder II（11）Elongation, stopping and contraction working condition；

Described oil pump（2）Output hydraulic pressure oil, 3-position 4-way hand-operated direction valve IV（15）It is located at and supplies oil level, hydraulic oil inputs simultaneously Join the hydraulic pressure dump cylinder I being arranged symmetrically（10）With hydraulic pressure dump cylinder II（11）, hydraulic pressure dump cylinder I（10）Tumble with hydraulic pressure Oil cylinder II（11）Synchronous elongation, so that drag links stalk hopper（20）Tumble backward, when stalk hopper（20）High needed for arrival Degree, by 3-position 4-way hand-operated direction valve IV（15）It is adjusted to stop position, hydraulic pressure dump cylinder I（10）With hydraulic pressure dump cylinder II（11） It is maintained at existing length, after the completion of work, by 3-position 4-way hand-operated direction valve IV（15）It is adjusted to oil return position, stalk hopper（20）? Gravitative Loads drop to horizontal level；

Described hydraulic lifting oil cylinder I（12）Hydraulic lifting oil cylinder II（13）It is installed on stalk hopper（20）Lower section covers locomotive frame The middle part left and right sides, in hydraulic lifting oil cylinder I（12）Hydraulic lifting oil cylinder II（13）Setting 3-position 4-way is manual and oil pump between Reversal valve III（14）Control hydraulic lifting oil cylinder I（12）Hydraulic lifting oil cylinder II（13）Elongation, stopping and contraction work shape State；

Described oil pump（2）Output hydraulic pressure oil, 3-position 4-way hand-operated direction valve III（14）It is located at and supplies oil level, hydraulic oil input is in parallel The hydraulic lifting oil cylinder I being arranged symmetrically（12）Hydraulic lifting oil cylinder II（13）, hydraulic lifting oil cylinder I（12）Hydraulic lifting oil cylinder II （13）Synchronous elongation, makes casing mechanism（21）It is lifted up, the machine that now covers is in non-job state；In operation, three four Logical hand-operated direction valve III（14）Positioned at oil return position, hydraulic lifting oil cylinder I（12）Hydraulic lifting oil cylinder II（13）Shrink, casing mechanism （21）Carry out operation because Gravitative Loads fall.

4. a kind of orchard improving straw mulching machine hydraulic system according to claim 1 is it is characterised in that described material blanking roller liquid Pressure motor（8）With casing mechanism hydraulic motor（9）3-position 4-way hand-operated direction valve I can be passed through respectively（5）, 3-position 4-way changes manually To valve II（4）Realization rotates backward, in case material blanking roller or casing mechanism（21）Blocking is removed during blocking.