CN111480404A - Scraping and rotating type grape vine digging machine - Google Patents

Abstract

The invention provides a scraping-rotary grape digging machine, which includes a main frame, a scraping device, a rotary tillage device and a hydraulic control device. The rear end of the main frame is slidably equipped with a scraping device. The side and rear are equipped with a rotary tiller, the hydraulic control device is located on the main frame, and the scraper can be retracted forward and backward; the height of the rotary tiller can be adjusted, and the scraper can be extended and retracted under the action of the hydraulic control device. At the same time, it drives the rotary tillage device to expand and contract together, which is beneficial to adjust the axial length of the operation; the rotary tillage device can clean the soil under the side of the grapevine, and perform secondary soil cleaning on the horizontal surface under the soil ridge. The scraper device and the rotary tiller blade The position of the disc is adjusted by hydraulic pressure. The control panel of the cab is connected to the drive motor and the solenoid valve respectively, which can be adjusted in real time through the driver's observation, which improves the cleaning efficiency and reduces the manual workload. The soil removal rate reaches more than 60%, which is 50% higher than that of the traditional scraper type rattan excavator.

Description

A scraping rotary grape vine digging machine

Technical field:

The invention relates to the field of agricultural machinery and equipment, in particular to a scraping and rotary grape vine digging machine.

Background technique:

In the field of viticulture, affected by the northern environment, the vines should be buried in the ground before winter to prevent them from being frozen, and the vines should be dug out before the spring.

At present, there are two main types of grape digging machines: scraper type and comb type. Among them, the scraper type is the most representative structure disclosed in the application of Ningxia Xinda Machinery Co., Ltd. (CN205946529U). In this structure, connecting plates connected to the tractor are installed on both sides of the front end of the main frame, and the traction frame is fixedly installed on the main frame. The frame includes a left oblique connecting arm, a right oblique linking arm and a traction frame connecting plate. The oblique connecting beam is divided into a front oblique connecting beam, a rear oblique connecting beam and a beam, and a scraper plate is fixedly installed on the left side under the main frame. , A plow blade is installed under the moldboard. The device has a simple structure, can realize operations on different terrains, and has high work efficiency. The comb type uses a flexible brush to clear the soil, which is better for the sandy area. During the working process of the scraper type rattan excavator, the position of the scraper needs to be manually adjusted according to the scraping effect, which takes a long time to operate, and the work efficiency is low. The labor intensity is high and the cost is high; if the brush type rattan excavator is in contact with the rattan during the working process, it is easy to damage the bud and affect the growth.

Invention content:

The purpose of the present invention is to provide a kind of scraping and rotary grape digging machine to solve the above problems.

A scraping-rotary grape digging machine includes a main frame, a soil scraping device, a rotary tillage device and a hydraulic control device. Rotary tillage device, the hydraulic control device is located on the main frame, and the hydraulic control device is respectively connected with the scraper device and the rotary tiller device, the scraper device can be retracted back and forth; the height of the rotary tiller device can be adjusted.

Preferably, the main frame includes a fixed beam, and the rear ends of the fixed beams are respectively fixedly connected to two basic connecting beams, and the basic connecting beams are hollow structures; the two basic connecting beams are fixedly connected to the basic beams, The hydraulic control device is fixedly fitted on the base connecting beam.

Preferably, the main frame further includes a traction frame, the traction frame includes a left oblique connecting arm, a right oblique connecting arm, a tractor connecting seat, a traction frame connecting group and a fixed connecting plate, the left oblique connecting arm and the bottom end of the right oblique connecting arm are respectively fixed on the fixed beam through a stable connecting seat, and the upper ends of the left oblique connecting arm and the right oblique connecting arm are respectively fixed on the bottom of the tractor connecting seat , the two sides of the tractor connection base are respectively provided with tractor connection holes, the tractor connection group is fixed at the front end of the fixed beam, and the number of the tractor connection group is not less than two; the fixed connection The plate is fixed on the front end of the fixed beam, and is located between the two sets of the tractor connection groups.

Preferably, the scraping device includes two adjusting connecting beams, between which an adjusting cross beam is fixedly connected, one end of the adjusting connecting beam extends into the interior of the basic connecting beam, and the adjusting connecting beam is The bottom of the moldboard is fixedly connected to the moldboard beam, the bottom of the moldboard beam is fixedly connected to the moldboard, the foundation beam is hinged with the base of the first hydraulic cylinder, and the first hydraulic cylinder is connected to one end of the first piston rod. The other end of the first piston rod is hinged with the adjusting beam, the first hydraulic cylinder is provided with an oil inlet a and an oil outlet b, and the oil inlet a and the oil outlet b pass through the hydraulic oil pipes respectively. Connect to hydraulic controls.

Preferably, the rotary tillage device includes a rotary tillage support beam, the bottom of one end of the rotary tillage support beam is fixed on the moldboard beam, and the top of the other end of the rotary tillage support beam is fixedly connected to the rotary tillage beam, so A rotary tillage adjusting beam is set inside the rotary tiller beam, and an adjustment hole is provided on the rotary tiller beam, and the adjusting hole can be equipped with an adjusting bolt; one end of the rotary tillage adjusting beam is fixedly connected to the vertical tiller connecting arm, The longitudinal connecting arm of the rotary tiller is a hollow structure.

Preferably, the rotary tillage device further comprises a rotary tillage height adjustment assembly and a rotary tillage disc assembly, the upper part of the rotary tillage height adjustment assembly extends into the rotary tillage longitudinal connecting arm, and the bottom of the rotary tillage height adjustment assembly is fixed The rotary tillage disc assembly is assembled, the rotary tillage height adjustment assembly includes a sliding arm, the sliding arm is slidably fitted inside the rotary tiller longitudinal connecting arm, the bottom of the sliding arm is fixedly connected to a stable frame, and the stable The bottom of the frame is fixedly connected to the support plate, the outer side of the sliding arm is fixedly equipped with a second hydraulic cylinder, the lower end of the second hydraulic cylinder is equipped with a second piston rod, and one end of the second piston rod is connected to the stable One side of the frame is hinged, an oil inlet c and an oil outlet d are respectively provided on the second hydraulic cylinder, and the oil inlet c and the oil outlet d are respectively connected with the hydraulic control device.

Preferably, the rotary tiller disc assembly includes a hydraulic motor, the hydraulic motor is fixedly fitted on the support plate through a fixing seat, and the output end of the hydraulic motor passes through the support plate and is fixedly connected to the rotary tiller blade A number of rotary blades are fixedly distributed around the bottom of the rotary tiller disc, and the hydraulic motor is provided with an oil inlet e and an oil outlet f, and the oil inlet e and the oil outlet f are respectively connected with the hydraulic control device .

Preferably, the hydraulic control device includes a hydraulic oil tank, the hydraulic oil tank is fixed on the basic connecting beam, an anti-seepage hole is opened on one side of the hydraulic oil tank, an oil tank cover is installed on the upper part of the hydraulic oil tank, and the hydraulic The inside of the oil tank is equipped with a supply oil pump. The supply oil pump is connected with the hydraulic oil pump through a pipeline, and the pipeline passes through the anti-seepage hole. The hydraulic oil pump is fixed on the hydraulic oil tank. The power of the hydraulic oil pump The input end is connected with the drive motor, the output end of the hydraulic oil pump is connected with the solenoid valve, and the output end of the solenoid valve is respectively connected with the oil inlet a, the oil inlet c and the oil inlet e through the hydraulic oil pipe, so The oil outlet b, the oil outlet d, and the oil outlet f are respectively communicated with the hydraulic oil tank through hydraulic oil pipes.

The invention provides a scraping and rotary grape digging machine, wherein the scraping device, the rotary tiller and the hydraulic control device are respectively equipped on the main frame, and the hydraulic control device respectively controls the scraping device and the rotary tiller, and the scraping device It can be extended and retracted under the action of the hydraulic control device, and at the same time, the rotary tillage device can be extended and retracted together during the retraction, which is beneficial to adjust the axial length of the operation; while the rotary tillage device cleans the soil under the side of the vine, and conducts two steps on the horizontal plane under the soil ridge. The second cleaning can improve the cleaning effect. The position of the scraper device and the rotary tiller is adjusted by hydraulic pressure. The control panel of the cab is connected to the drive motor and the solenoid valve, which can be adjusted in real time through the driver's observation to improve cleaning. Reduce manual workload while improving soil efficiency. The soil removal rate reaches more than 60%, which is 50% higher than that of the traditional scraper type rattan excavator.

Description of drawings:

Fig. 1 is a kind of three-dimensional structure schematic diagram of scraping rotary grape digging machine;

Fig. 2 is the structural representation of a kind of scraping rotary grape digging machine;

Fig. 3 is the enlarged structural representation of part A in Fig. 2;

In the figure: main frame 1, scraping device 2, rotary tiller 3, hydraulic control device 4, fixed beam 10, foundation connecting beam 11, foundation beam 12, traction frame 13, left oblique connecting arm 130, right oblique connection Arm 131, tractor connecting seat 132, tractor connecting group 133, fixed connecting plate 134, adjusting connecting beam 20, moldboard beam 21, moldboard 22, first hydraulic cylinder 23, first piston rod 24, adjustment Cross beam 25, Rotary tillage support beam 30, Rotary tillage cross beam 31, Rotary tillage adjustment beam 32, Rotary tillage longitudinal connecting arm 33, Rotary tillage height adjustment assembly 34, Sliding arm 340, Stable frame 341, Support plate 342, Second hydraulic cylinder 343, the second piston rod 344, the rotary tiller disc assembly 35, the hydraulic motor 350, the fixed seat 351, the rotary tiller disc 352, the rotary blade 353, the hydraulic oil tank 40, the hydraulic oil pump 41, the solenoid valve 42, the anti-seepage hole 43 and Fuel tank cap 44.

Detailed ways:

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the description of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation or a specific orientation. construction and operation, and therefore should not be construed as limiting the invention; the terms "first", "second", "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance, furthermore, unless otherwise Clearly stipulated and defined, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or a Electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

Referring to Figures 1-3, a scraping-rotary grape digging machine includes a main frame 1, a scraping device 2, a rotary tiller 3 and a hydraulic control device 4, and the rear end of the main frame 1 is slidably equipped with a scraping device 2. The side and rear of the scraping device 2 is equipped with a rotary tiller 3, the hydraulic control device 4 is located on the main frame 1, and the hydraulic control device 4 is respectively connected with the scraper 2 and the rotary tiller 3, The scraping device 2 can be retracted back and forth; the height of the rotary tillage device 3 can be adjusted.

The main frame 1 includes a fixed beam 10, and the rear ends of the fixed beam 10 are respectively fixedly connected to two basic connecting beams 11, and the basic connecting beams 11 are hollow structures; the two basic connecting beams 11 are fixedly connected. The base beam 12 and the hydraulic control device 4 are fixedly fitted on the base connecting beam 11 .

The main frame 1 further includes a traction frame 13, and the traction frame 13 includes a left oblique connecting arm 130, a right oblique connecting arm 131, a tractor connecting seat 132, a traction frame connecting group 133 and a fixed connecting plate 134. The bottom ends of the left oblique connecting arm 130 and the right oblique connecting arm 131 are respectively fixed on the fixing beam 10 through a stable connecting seat, and the left oblique connecting arm 130 and the right oblique connecting arm 131 are The upper ends are respectively fixed at the bottom of the tractor connecting base 132, the two sides of the tractor connecting base 132 are respectively provided with tractor connecting holes, the tractor connecting group 133 is fixed on the front end of the fixed beam 10, the tractor The number of the connection groups 133 is not less than two; the fixed connection plate 134 is fixed on the front end of the fixed beam 10 and is located between the two sets of the tractor connection groups 133 .

The scraping device 2 includes two adjusting connecting beams 20, between which an adjusting cross beam 25 is fixedly connected, one end of the adjusting connecting beam 20 extends into the interior of the basic connecting beam 11, and the The bottom of the adjustment connecting beam 20 is fixedly connected to the moldboard beam 21, the bottom of the moldboard beam 21 is fixedly connected to the moldboard 22, the base beam 12 is hinged with the base of the first hydraulic cylinder 23, the first The hydraulic cylinder 23 is assembled with one end of the first piston rod 24, and the other end of the first piston rod 24 is hinged with the adjustment beam 25. The first hydraulic cylinder 23 is provided with an oil inlet a and an oil outlet b, so The oil inlet a and the oil outlet b are respectively connected with the hydraulic control device 4 through hydraulic oil pipes.

The rotary tillage device 3 includes a rotary tillage support beam 30, one end of the rotary tillage support beam 30 is fixed on the moldboard beam 21, and the upper part of the other end of the rotary tillage support beam 30 is fixedly connected to the rotary tillage beam. 31. A rotary tillage adjustment beam 32 is set inside the rotary tillage beam 31, and an adjustment hole is provided on the rotary tillage beam 31, and the adjustment hole can be equipped with an adjustment bolt; one end of the rotary tillage adjustment beam 32 is fixedly connected to the screw The ploughing longitudinal connecting arm 33 is a hollow structure.

The rotary tillage device 3 further includes a rotary tillage height adjustment assembly 34 and a rotary tillage disc assembly 35. The upper part of the rotary tillage height adjustment assembly 34 extends into the rotary tillage longitudinal connecting arm 33, and the rotary tillage height adjustment assembly 34 The bottom of the rotary tillage disc assembly 35 is fixedly fitted, and the rotary tillage height adjustment assembly 34 includes a sliding arm 340. The sliding arm 340 is slidably fitted inside the rotary tillage longitudinal connecting arm 33. The bottom is fixedly connected to the stable frame 341 , the bottom of the stable frame 341 is fixedly connected to the support plate 342 , the outer side of the sliding arm 340 is fixedly equipped with a second hydraulic cylinder 343 , and the lower end of the second hydraulic cylinder 343 is equipped with a second hydraulic cylinder 343 . Piston rod 344, one end of the second piston rod 344 is hinged with one side of the stable frame 341, the second hydraulic cylinder 343 is respectively provided with an oil inlet c and an oil outlet d, the oil inlet c and d of the oil outlet are respectively connected with the hydraulic control device 4 .

The rotary tiller disc assembly 35 includes a hydraulic motor 350, the hydraulic motor 350 is fixedly fitted on the support plate 342 through a fixing seat 351, and the output end of the hydraulic motor 350 passes through the support plate 342 and is fixed Connecting the rotary tiller disc 352, a number of rotary blades 353 are fixedly distributed around the bottom of the rotary tiller disc 352, the hydraulic motor 350 is provided with an oil inlet e and an oil outlet f, the oil inlet e and the oil outlet The ports f are respectively connected to the hydraulic control device 4 .

The hydraulic control device 4 includes a hydraulic oil tank 40 , the hydraulic oil tank 40 is fixed on the basic connecting beam 11 , an anti-seepage hole 43 is provided on one side of the hydraulic oil tank 40 , and an oil tank cover is installed on the upper part of the hydraulic oil tank 40 44. The inside of the hydraulic oil tank 40 is equipped with a supply oil pump, the supply oil pump is connected with the hydraulic oil pump 41 through a pipeline, the pipeline passes through the anti-seepage hole 43, and the hydraulic oil pump 41 is fixed in the hydraulic oil tank 40. Above, the power input end of the hydraulic oil pump 41 is connected with the drive motor, the output end of the hydraulic oil pump 41 is connected with the solenoid valve 42, and the output end of the solenoid valve 42 is respectively connected with the oil inlet a, the oil inlet c and the oil inlet e are connected through hydraulic oil pipes, and the oil outlet b, the oil outlet d, and the oil outlet f are respectively communicated with the hydraulic oil tank 40 through the hydraulic oil pipes.

Working principle: The tractor connecting seat 132 is movably connected with the hydraulic lifting rod at the rear end of the tractor, and the tractor connecting group 133 is hinged at the rear end of the tractor respectively. Under the action of the hydraulic lifting rod, the main frame 1 can be lifted and lowered. When the position of the moldboard 22 needs to be adjusted, as long as the driver controls the solenoid valve 42 through the control panel to open the corresponding channel, the hydraulic oil enters the first hydraulic cylinder 23 from the oil inlet a through the hydraulic oil pipe, and the first hydraulic cylinder 23 makes the first hydraulic cylinder 23. The piston rod 24 is extended, and the corresponding channel of the solenoid valve 42 is controlled to open and close, so that the expansion and contraction can be completed. During expansion and contraction, it is brought to the moldboard 22 to move back and forth, so that real-time adjustment can be made according to the actual working environment. The beam 21 on the plate is fixedly connected. During the expansion and contraction of the scraping device 2, the rotary tiller adjusting beam 32 can be controlled to move left and right by adjusting bolts, thereby adjusting the width of the rotary tiller. At the same time, under the action of the hydraulic control device 4, control the The second hydraulic cylinder 343 works, the second hydraulic cylinder 343 moves the second piston rod 344 up and down, and moves the sliding arm 340 up and down during the movement, so that the height of the rotary tiller disc assembly 35 from the soil can be adjusted to realize real-time control.

The invention provides a scraping and rotary grape digging machine, wherein the scraping device, the rotary tiller and the hydraulic control device are respectively equipped on the main frame, and the hydraulic control device respectively controls the scraping device and the rotary tiller, and the scraping device It can be extended and retracted under the action of the hydraulic control device, and at the same time, the rotary tillage device can be extended and retracted together during the retraction, which is beneficial to adjust the axial length of the operation; while the rotary tillage device cleans the soil under the side of the vine, and conducts two steps on the horizontal plane under the soil ridge. The second cleaning can improve the cleaning effect. The position of the scraper device and the rotary tiller is adjusted by hydraulic pressure. The control panel of the cab is connected to the drive motor and the solenoid valve, which can be adjusted in real time through the driver's observation to improve cleaning. Reduce manual workload while improving soil efficiency. The soil removal rate reaches more than 60%, which is 50% higher than that of the traditional scraper type rattan excavator.

Claims (8)

1. A scraping rotary grape digging machine is characterized in that: comprising a main frame (1), a soil scraping device (2), a rotary tiller (3) and a hydraulic control device (4), the main frame (1) The rear end of ) is slidably fitted with a scraping device (2), the side and rear of the scraping device (2) is fitted with a rotary tiller (3), the hydraulic control device (4) is located on the main frame 1, and all the The hydraulic control device (4) is respectively connected with the scraping device (2) and the rotary tiller device (3), the scraper device (2) can be retracted back and forth; the height of the rotary tiller device (3) can be adjusted. 2. A kind of scraping and rotating grape vine digging machine according to claim 1, characterized in that: the main frame (1) comprises a fixed beam (10), and the rear ends of the fixed beam (10) are respectively fixedly connected Two basic connecting beams (11), wherein the basic connecting beams (11) are hollow structures; a basic cross beam (12) is fixedly connected between the two basic connecting beams (11), and the hydraulic control device (4) is fixed Fitted on the base connecting beam (11). 3. A scraping-rotary grape vine digging machine according to claim 2, characterized in that: the main frame (1) further comprises a traction frame (13), and the traction frame (13) comprises a left oblique connection The arm (130), the right oblique connecting arm (131), the tractor connecting seat (132), the tractor connecting group (133) and the fixed connecting plate (134), the left oblique connecting arm (130) and the The bottom ends of the right oblique connecting arm (131) are respectively fixed on the fixing beam (10) through a stable connecting seat, and the upper ends of the left oblique connecting arm (130) and the right oblique connecting arm (131) are respectively fixed on the fixing beam (10). They are respectively fixed on the bottom of the tractor connecting seat (132), the two sides of the tractor connecting seat (132) are respectively provided with tractor connecting holes, and the tractor connecting group (133) is fixed on the fixing beam (10) The front end of the tractor connection group (133) is not less than two groups; the fixed connection plate (134) is fixed on the front end of the fixed beam (10), and is located in the two groups of the tractor connection group (133). 4. A kind of scraping and rotary grape vine digging machine according to claim 2, characterized in that: the scraping device (2) comprises two adjusting connecting beams (20), and the two adjusting connecting beams (20) An adjustment beam (25) is fixedly connected between them, one end of the adjustment connection beam (20) extends into the interior of the foundation connection beam (11), and the bottom of the adjustment connection beam (20) is fixedly connected to the moldboard beam (21), the bottom of the moldboard beam (21) is fixedly connected to the moldboard (22), the foundation beam (12) is hinged with the base of the first hydraulic cylinder (23), and the first hydraulic cylinder ( 23) Fitted with one end of the first piston rod (24), the other end of the first piston rod (24) is hinged with the adjusting beam (25), and the first hydraulic cylinder (23) is provided with an oil inlet a and an oil outlet b, the oil inlet a and the oil outlet b are respectively connected with the hydraulic control device (4) through hydraulic oil pipes. 5. A kind of scraping-rotary grape vine digging machine according to claim 4, characterized in that: the rotary tillage device (3) comprises a rotary tillage support beam (30), one end of the rotary tillage support beam (30) The bottom is fixed on the moldboard beam (21), the upper part of the other end of the rotary tillage support beam (30) is fixedly connected to a rotary tillage beam (31), and the rotary tillage beam (31) is internally fitted with a rotary tillage adjustment A beam (32), and an adjustment hole is provided on the rotary tiller beam (31), and the adjustment hole can be equipped with an adjusting bolt; one end of the rotary tillage adjusting beam (32) is fixedly connected to the rotary tiller longitudinal connecting arm (33) , the rotary tiller longitudinal connecting arm (33) is a hollow structure. 6. A kind of scraping and rotary grape vine digging machine according to claim 5, characterized in that: the rotary tillage device (3) further comprises a rotary tillage height adjustment assembly (34) and a rotary tillage disc assembly (35) , the upper part of the rotary tillage height adjustment assembly (34) extends into the rotary tillage longitudinal connecting arm (33), and the bottom of the rotary tillage height adjustment assembly (34) is fixedly equipped with a rotary tillage disc assembly (35), so The rotary tillage height adjustment assembly (34) includes a sliding arm (340), the sliding arm (340) is slidably fitted inside the rotary tillage longitudinal connecting arm (33), and the bottom of the sliding arm (340) is fixedly connected A stable frame (341), the bottom of the stable frame (341) is fixedly connected to the support plate (342), the outer side of the sliding arm (340) is fixedly equipped with a second hydraulic oil cylinder (343), the second hydraulic oil cylinder ( 343) A second piston rod (344) is fitted at the low bottom end, one end of the second piston rod (344) is hinged with one side of the stable frame (341), and the second hydraulic cylinder (343) is respectively provided with openings The oil inlet c and the oil outlet d, the oil inlet c and the oil outlet d are respectively connected with the hydraulic control device (4). 7. A scraping-rotary grape vine digging machine according to claim 6, characterized in that: the rotary tiller disc assembly (35) comprises a hydraulic motor (350), and the hydraulic motor (350) passes through a fixed seat (351) is fixedly fitted on the support plate (342), the output end of the hydraulic motor (350) passes through the support plate (342) and is fixedly connected to the rotary tiller disc (352), the rotary tiller A plurality of rotating blades (353) are fixedly distributed around the bottom of the cutter head (352), and the hydraulic motor (350) is provided with an oil inlet e and an oil outlet f, and the oil inlet e and the oil outlet f are respectively connected with the hydraulic pressure. The control device (4) is connected. 8. A scraping-rotary grape vine digging machine according to claim 7, characterized in that: the hydraulic control device (4) comprises a hydraulic oil tank (40), and the hydraulic oil tank (40) is fixed on the foundation On the connecting beam (11), an anti-seepage hole (43) is provided on one side of the hydraulic oil tank (40), an oil tank cover (44) is installed on the upper part of the hydraulic oil tank (40), and the inside of the hydraulic oil tank (40) Equipped with a supply oil pump, the supply oil pump is connected with the hydraulic oil pump (41) through a pipeline, the pipeline passes through the anti-seepage hole (43), and the hydraulic oil pump (41) is fixed on the hydraulic oil tank (40) , the power input end of the hydraulic oil pump (41) is connected with the drive motor, the output end of the hydraulic oil pump (41) is connected with the solenoid valve (42), and the output end of the solenoid valve (42) is respectively connected with the input end The oil port a, the oil inlet c and the oil inlet e are connected by hydraulic oil pipes, and the oil outlet b, the oil outlet d, and the oil outlet f are respectively communicated with the hydraulic oil tank (40) by the hydraulic oil pipes.

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