Hydraulic valve group and forest fruit picking operation vehicle with same

Abstract

The invention discloses a hydraulic valve group and a forest fruit picking operation vehicle with the hydraulic valve group, and the hydraulic valve group comprises a hydraulic valve block, a first speed regulating valve, a second speed regulating valve, an overflow valve, a first one-way valve, a second one-way valve, a third one-way valve, a first electromagnetic reversing valve, a second electromagnetic reversing valve and a third electromagnetic reversing valve, the system comprises a first electromagnetic directional valve, a second electromagnetic directional valve, a fourth electromagnetic directional valve, a hydraulic directional valve, a first proportional flow valve, a second proportional flow valve, an oil port P1, an oil port P, an oil port M1, an oil port M2, an oil port T, oil ports A and B, oil ports A1 and B1, oil ports A2 and B2, and oil ports A3 and B3. The hydraulic valve group can be used for the forest fruit picking operation vehicle to realize steering, rotation, arm support amplitude variation and arm support stretching and retracting actions. The hydraulic valve group and the forest fruit picking operation vehicle with the hydraulic valve group have the following beneficial effects that the number of combined hydraulic elements is large, so that the structure is more compact, the control precision is high, integrated control can be achieved, and the forest fruit picking operation vehicle can achieve multiple functions.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic control, in particular to a hydraulic valve group, and also relates to a fruit and forest harvesting vehicle having the above hydraulic valve group. Background Art

[0002] Large fruit and forest harvesting vehicles use hydraulic transmission and control technologies to transmit motion and perform related harvesting work, solving the problems of high labor intensity, low efficiency, and poor safety during manual harvesting. Reasonably applying the advantages of hydraulic technology to fruit and forest harvesting vehicles, developing a more reasonable-structured and better-performing hydraulic system, and integrating hydraulic control technology into the equipment to achieve the intelligence and precision of harvesting equipment are of great significance to the development of China's fruit and forest harvesting industry.

[0003] The hydraulic valve group is the core component of the hydraulic system of fruit and forest harvesting vehicles. At present, the layout of the hydraulic valve group of fruit and forest harvesting vehicles is relatively scattered, which is not conducive to installation and maintenance; the functions of fruit and forest harvesting vehicles are too few, without the function of adjusting the angle and length of the boom or without the steering function; the harvesting area is relatively narrow; it is not convenient to move or cannot climb slopes at a certain angle. Summary of the Invention

[0004] Based on this, the first object of the present invention is to provide a hydraulic valve group, the external dimensions of which are only 260mm×100mm×100mm, and the weight is about 17 kg. Compared with traditional hydraulic valve groups, the external dimensions are greatly reduced, the weight is reduced by more than 20%, the manufacturing cost is reduced, the potential for faults is reduced, and the host can achieve multiple functions.

[0005] On the basis of the first object, a fruit and forest harvesting vehicle including the above hydraulic valve group is also provided, which mainly consists of a chassis, a body, crawlers, a slewing platform, a boom, a working platform, and oil cylinders; the oil cylinders include a luffing oil cylinder, a telescopic oil cylinder, a leveling oil cylinder, and a folding boom oil cylinder; the hydraulic valve group is installed inside the body of the fruit and forest harvesting vehicle.

[0006] The present invention is implemented by adopting the following technical solutions:

[0007] A hydraulic valve group and a fruit and forest harvesting vehicle having the hydraulic valve group, which are characterized by including a hydraulic valve block, a first speed control valve, a second speed control valve, a relief valve, a first check valve, a second check valve, a third check valve, a first electromagnetic directional valve, a second electromagnetic directional valve, a third electromagnetic directional valve, a fourth electromagnetic directional valve, a hydraulic directional valve, a first proportional flow valve, a second proportional flow valve, a P1 oil port, a P oil port, an M1 oil port, an M2 oil port, a T oil port, A and B oil ports, A1 and B1 oil ports, A2 and B2 oil ports, and A3 and B3 oil ports.

[0008] The oil inlet of the first one-way valve is connected to the P oil port, the oil outlet of the first one-way valve is connected to the P1 oil port, the oil inlet of the overflow valve, and the oil inlet of the first speed control valve. The first oil inlet of the first electromagnetic directional valve is connected to the oil outlet of the first speed control valve, the second oil inlet of the first electromagnetic directional valve is connected to the oil inlet of the hydraulic directional valve, and the first oil outlet and the second oil outlet of the first electromagnetic directional valve are connected to the A oil port and the B oil port.

[0009] The oil inlet of the second one-way valve is connected to the oil outlet of the first proportional flow valve, the oil outlet of the second one-way valve is connected to the oil inlet of the second speed control valve, the oil inlet of the first proportional flow valve is connected to the oil inlet of the hydraulic directional valve, the oil outlet of the first proportional flow valve is connected to the first oil inlet of the second electromagnetic directional valve, and the first oil outlet and the second oil outlet of the second electromagnetic directional valve are connected to the A1 oil port and the B1 oil port.

[0010] The oil inlet of the third one-way valve is connected to the oil outlet of the second proportional flow valve, the oil outlet of the third one-way valve is connected to the oil inlet of the second speed control valve, the oil inlet of the second proportional flow valve is connected to the oil inlet of the hydraulic directional valve, the oil outlet of the second proportional flow valve is connected to the first oil inlet of the third electromagnetic directional valve and the first oil inlet of the fourth electromagnetic directional valve. The first oil outlet and the second oil outlet of the third electromagnetic directional valve are connected to the A2 oil port and the B2 oil port, and the first oil outlet and the second oil outlet of the fourth electromagnetic directional valve are connected to the A3 oil port and the B3 oil port.

[0011] The oil outlet of the overflow valve, the oil outlet of the hydraulic directional valve, the oil inlet of the second speed control valve, the second oil inlet of the second electromagnetic directional valve, the second oil inlet of the third electromagnetic directional valve, and the second oil inlet of the fourth electromagnetic directional valve are connected to the tank T port.

[0012] The P oil port is connected to the main pump of the hydraulic system of the fruit picking operation vehicle, the P1 oil port is connected to the auxiliary pump of the hydraulic system of the fruit picking operation vehicle, the A oil port and the B oil port are connected to the steering cylinder of the fruit picking operation vehicle, the A1 oil port and the B1 oil port are connected to the swing balance valve of the fruit picking operation vehicle, the A2 oil port and the B2 oil port are connected to the boom cylinder balance valve of the fruit picking operation vehicle, and the A3 oil port and the B3 oil port are connected to the telescopic cylinder balance valve of the fruit picking operation vehicle.

[0013] Optionally, it further includes: a damping orifice. The first end of the damping orifice is connected to the oil inlet of the second speed control valve, and the second end of the damping orifice is connected to the control oil port of the hydraulic directional valve.

[0014] Optionally, the first electromagnetic directional control valve, the second electromagnetic directional control valve, the third electromagnetic directional control valve, and the fourth electromagnetic directional control valve are all three-position four-way Y-type directional control valves.

[0015] The material of the hydraulic valve block of the present invention is aluminum alloy, and the rated flow rate is 40 L / min; the set pressure of the relief valve is 220 bar, and the pressure regulation range is 27.6 - 34.5 bar; the flow rate range of the first flow control valve is 9.5 - 24 L / min; the flow rate of the second flow control valve is 0.38 L / min; the opening pressure of the hydraulic directional control valve is 11 bar; the flow rates of the second electromagnetic directional control valve and the third electromagnetic directional control valve are 16 L / min; the flow rate of the fourth electromagnetic directional control valve is 24 L / min.

[0016] It can be seen from the above technical solutions that when the fruit and forest picking operation vehicle of the present invention is working, the steering function of the operation vehicle is realized through the first electromagnetic directional control valve; the slewing function of the operation vehicle is realized through the second electromagnetic directional control valve, and the first proportional flow valve can make the slewing action of the operation vehicle stable; the luffing function of the operation vehicle is realized through the third electromagnetic directional control valve, and the second proportional flow valve can make the luffing action of the operation vehicle stable; the telescopic function of the boom of the operation vehicle is realized through the fourth electromagnetic directional control valve. For example, when the first proportional flow valve is adjusted too large, the excess flow will open the control oil port of the hydraulic directional control valve through the check valve and the damping hole. At this time, the excess part of the oil in the second oil inlet of the first electromagnetic directional control valve will directly pass through the hydraulic directional control valve to the T port, so as to prevent the "jitter" phenomenon from occurring during the slewing start-up action. Description of the Drawings

[0017] Figure 1 It is the hydraulic schematic diagram of the hydraulic valve group of the present invention.

[0018] Figure 2 It is the structural schematic diagram of the hydraulic valve group of the present invention.

[0019] Figure 3 It is Figure 2 the top view of

[0020] Figure 4 It is Figure 2 the left view of

[0021] Figure 5 It is Figure 4 the left view of

[0022] Figure 6 It is the structural schematic diagram of the fruit and forest picking operation vehicle of the present invention.

[0023] In the figure: 1. Overflow valve; 2. Hydraulic directional control valve; 3. Damping orifice; 4. Hydraulic valve block; 11. First check valve; 12. Second check valve; 13. Third check valve; 21. First solenoid-operated directional control valve; 22. Second solenoid-operated directional control valve; 23. Third solenoid-operated directional control valve; 24. Fourth solenoid-operated directional control valve; 31. First proportional flow valve; 32. Second proportional flow valve; 41. First speed control valve; 42. Second speed control valve; P. Connected to the main pump oil port; P1. Connected to the auxiliary pump oil port; T. Connected to the hydraulic oil tank return oil port; M1. First pressure measurement oil port; M2. Second pressure measurement oil port; A1 and B1. Connected to the two working oil ports of the slewing motor; A2 and B2. Connected to the two working oil ports of the luffing cylinder; A3 and B3. Connected to the two working oil ports of the telescopic cylinder; 100. Hydraulic valve group; 200. Slewing platform; 300. Chassis; 400. Vehicle body; 500. Luffing cylinder; 600. Boom; 700. Telescopic cylinder; 800. Leveling cylinder; 900. Folding boom cylinder; 1000. Working platform. Detailed implementation mode

[0024] The present invention will be further described below in conjunction with the drawings and embodiments.

[0025] As Figure 1 A hydraulic valve group for a fruit and forest harvesting operation vehicle as shown, which is characterized by including a hydraulic valve block 4, a first speed control valve 41, a second speed control valve 42, an overflow valve 1, a first check valve 11, a second check valve 12, a third check valve 13, a first solenoid-operated directional control valve 21, a second solenoid-operated directional control valve 22, a third solenoid-operated directional control valve 23, a fourth solenoid-operated directional control valve 24, a hydraulic directional control valve 2, a first proportional flow valve 31, a second proportional flow valve 32, a P1 oil port, a P oil port, an M1 oil port, an M2 oil port, a T oil port, an A and B oil port, an A1 and B1 oil port, an A2 and B2 oil port, and an A3 and B3 oil port.

[0026] Specifically, the connection modes of the components in the hydraulic valve group of the fruit and forest harvesting operation vehicle are as follows:

[0027] The inlet port of the first check valve 11 is connected to the P oil port, the outlet port of the first check valve 11 is connected to the P1 oil port, the inlet port of the overflow valve 1, and the inlet port of the first speed control valve 41. The first inlet port of the first solenoid-operated directional control valve 21 is connected to the outlet port of the first speed control valve 41, the second inlet port of the first solenoid-operated directional control valve 21 is connected to the inlet port of the hydraulic directional control valve 2, and the first outlet port and the second outlet port of the first solenoid-operated directional control valve 21 are connected to the A and B oil ports.

[0028] The oil inlet of the second one-way valve 12 is connected to the oil outlet of the first proportional flow valve 31, the oil outlet of the second one-way valve 12 is connected to the oil inlet of the second speed control valve 42, the oil inlet of the first proportional flow valve 31 is connected to the oil inlet of the hydraulic control valve 2, the oil outlet of the first proportional flow valve 31 is connected to the first oil inlet of the second electromagnetic control valve 22, and the first oil outlet and the second oil outlet of the second electromagnetic control valve 22 are connected to the A1 oil port and the B1 oil port.

[0029] The oil inlet of the third one-way valve 13 is connected to the oil outlet of the second proportional flow valve 32, the oil outlet of the third one-way valve 13 is connected to the oil inlet of the second speed control valve 42, the oil inlet of the second proportional flow valve 32 is connected to the oil inlet of the hydraulic control valve 2, the oil outlet of the second proportional flow valve 32 is connected to the first oil inlet of the third electromagnetic control valve 23 and the first oil inlet of the fourth electromagnetic control valve 24, the first oil outlet and the second oil outlet of the third electromagnetic control valve 23 are connected to the A2 oil port and the B2 oil port, and the first oil outlet and the second oil outlet of the fourth electromagnetic control valve 24 are connected to the A3 oil port and the B3 oil port.

[0030] The oil outlet of the relief valve 1, the oil outlet of the hydraulic control valve 2, the oil inlet of the second speed control valve 42, the second oil inlet of the second electromagnetic control valve 22, the second oil inlet of the third electromagnetic control valve 23, and the second oil inlet of the fourth electromagnetic control valve 24 are connected to the tank T port.

[0031] The P oil port of the hydraulic valve block 4 is connected to the main pump of the hydraulic system of the fruit and forest harvesting vehicle, the P1 oil port is connected to the auxiliary pump of the hydraulic system of the fruit and forest harvesting vehicle, the A oil port and the B oil port are connected to the steering cylinder of the fruit and forest harvesting vehicle, the A1 oil port and the B1 oil port are connected to the swing balance valve of the fruit and forest harvesting vehicle, the A2 oil port and the B2 oil port are connected to the boom luffing cylinder balance valve of the fruit and forest harvesting vehicle, and the A3 oil port and the B3 oil port are connected to the telescopic cylinder balance valve of the fruit and forest harvesting vehicle.

[0032] In this embodiment, the hydraulic valve group can be used for the fruit and forest harvesting vehicle to realize steering, slewing, boom luffing and boom telescoping actions. The hydraulic valve group and the hydraulic actuators include a steering cylinder, a slewing motor, a luffing cylinder and a telescopic cylinder, which are connected. The above-mentioned hydraulic actuators and the hydraulic valve block 4 are connected through relevant hydraulic oil pipelines or paths to realize the control of each actuator by the hydraulic valve group.

[0033] The working state of the hydraulic valve group of the fruit and forest harvesting machinery in this embodiment is as follows:

[0034] When the fruit and forest harvesting operation vehicle needs to turn, the left solenoid of the first electromagnetic directional valve 21 is energized. The hydraulic oil coming from the main pump passes through the P port of the hydraulic valve block 4, the first check valve 11, the first speed control valve 41, the first oil inlet of the first electromagnetic directional valve 21, the first oil outlet of the first electromagnetic directional valve 21, and the A port of the hydraulic valve block 4 to the steering cylinder, causing the two steering wheels to deflect simultaneously to achieve a clockwise turning action. Conversely, when the right solenoid of the first electromagnetic directional valve 21 is energized, the hydraulic oil coming from the main pump passes through the P port of the hydraulic valve block 4, the first speed control valve 41, the first oil inlet of the first electromagnetic directional valve 21, the second oil outlet of the first electromagnetic directional valve 21, and the B port of the hydraulic valve block 4 to the steering cylinder, causing the two steering wheels to deflect simultaneously to achieve a counterclockwise turning action.

[0035] When the fruit and forest harvesting operation vehicle needs to achieve a slewing action, the first electromagnetic directional valve 21 is de-energized, and the left position of the second electromagnetic directional valve 22 is energized. The hydraulic oil coming from the main pump passes through the P port of the hydraulic valve block 4, the first check valve 11, the first speed control valve 41, the first proportional flow valve 31, the first oil inlet of the second electromagnetic directional valve 22, the first oil outlet of the second electromagnetic directional valve 22, the A1 port of the hydraulic valve block 4, and the slewing motor balance valve to the slewing motor, causing the upper body of the fruit and forest harvesting operation vehicle to achieve a clockwise slewing action. Conversely, when the first electromagnetic directional valve 21 is de-energized and the right position of the second electromagnetic directional valve 22 is energized, the hydraulic oil coming from the main pump passes through the P port of the hydraulic valve block 4, the first check valve 11, the first speed control valve 41, the first proportional flow valve 31, the second oil inlet of the second electromagnetic directional valve 22, the second oil outlet of the second electromagnetic directional valve 22, the B1 port of the hydraulic valve block 4, and the slewing motor balance valve to the slewing motor, causing the upper body of the fruit and forest harvesting operation vehicle to achieve a counterclockwise slewing action.

[0036] When the fruit and forest harvesting operation vehicle needs to achieve a boom luffing action, the first electromagnetic directional valve 21 is de-energized, and the left position of the second electromagnetic directional valve 23 is energized. The hydraulic oil coming from the main pump passes through the P port of the hydraulic valve block 4, the first check valve 11, the first speed control valve 41, the second proportional flow valve 32, the first oil inlet of the second electromagnetic directional valve 23, the first oil outlet of the second electromagnetic directional valve 23, the A2 port of the hydraulic valve block 4, and the balance valve to the rodless cavity of the luffing cylinder, causing the fruit and forest harvesting operation vehicle to extend the boom. Conversely, when the first electromagnetic directional valve 21 is de-energized and the right position of the second electromagnetic directional valve 23 is energized, the hydraulic oil coming from the main pump passes through the P port of the hydraulic valve block 4, the first check valve 11, the first speed control valve 41, the second proportional flow valve 32, the second oil inlet of the second electromagnetic directional valve 23, the second oil outlet of the second electromagnetic directional valve 23, the B2 port of the hydraulic valve block 4, and the balance valve to the rod end cavity of the luffing cylinder, causing the fruit and forest harvesting operation vehicle to retract the boom.

[0037] When the fruit and forest harvesting vehicle needs to perform the boom telescoping action, the first electromagnetic directional valve 21 is de-energized, and the left position of the second electromagnetic directional valve 24 is energized. The hydraulic oil from the main pump passes through the P port of the hydraulic valve block 4, the first check valve 11, the first speed control valve 41, the second proportional flow valve 32, the first oil inlet of the second electromagnetic directional valve 24, the first oil outlet of the second electromagnetic directional valve 24, the A3 port of the hydraulic valve block 4, and the balance valve to the rodless cavity of the telescopic cylinder, causing the long arm of the fruit and forest harvesting machinery to extend; conversely, when the first electromagnetic directional valve 21 is de-energized and the right position of the second electromagnetic directional valve 24 is energized, the hydraulic oil from the main pump passes through the P port of the hydraulic valve block 4, the first check valve 11, the first speed control valve 41, the second proportional flow valve 32, the second oil inlet of the second electromagnetic directional valve 24, the second oil outlet of the second electromagnetic directional valve 24, the B2 port of the hydraulic valve block 4, and the balance valve to the rod cavity of the telescopic cylinder, causing the fruit and forest harvesting vehicle to retract the long arm.

[0038] The material of the hydraulic valve block of the present invention is aluminum alloy, and the rated flow rate is 40 L / min; the set pressure of the relief valve is 220 bar, and the pressure regulation range is 27.6 - 34.5 bar; the flow rate range of the first speed control valve is 9.5 - 24 L / min; the flow rate of the second speed control valve is 0.38 L / min; the opening pressure of the hydraulic directional valve is 11 bar; the rated flow rates of the second electromagnetic directional valve and the third electromagnetic directional valve are 16 L / min; the rated flow rate of the fourth electromagnetic directional valve is 24 L / min.

[0039] The hydraulic valve group of the fruit and forest harvesting vehicle provided by the embodiment of the present invention has the following advantages: there are relatively many combined hydraulic components, and the outer dimensions of the valve group are only 260×100×100, making the structure more compact, the manufacturing cost low, the control accuracy high, achieving the integrated control effect and enabling multiple harvesting functions of the host, and being applicable to various fruit and forest harvesting vehicles.

[0040] The embodiment of the present invention also discloses a fruit and forest harvesting vehicle with this hydraulic valve group, which mainly consists of a hydraulic valve group 100, a slewing platform 200, a chassis 300, a vehicle body 400, a luffing cylinder 500, a boom 600, a telescopic cylinder 700, a leveling cylinder 800, a folding boom cylinder 900, and a working platform 1000. The hydraulic valve group is installed inside the vehicle body. Due to having the above hydraulic valve group, it has all the technical effects of the above hydraulic valve group, which will not be elaborated herein.

Claims

1. A hydraulic valve group, characterized in that It includes a hydraulic valve block, a first speed regulating valve, a second speed regulating valve, a relief valve, a first check valve, a second check valve, a third check valve, a first solenoid reversing valve, a second solenoid reversing valve, a third solenoid reversing valve, a fourth solenoid reversing valve, a hydraulic reversing valve, a first proportional flow valve, a second proportional flow valve, a P1 oil port, a P oil port, an M1 oil port, an M2 oil port, a T oil port, an A and B oil port, an A1 and B1 oil port, an A2 and B2 oil port, and an A3 and B3 oil port.

2. The hydraulic valve assembly according to claim 1, characterized in that: The oil inlet of the first one-way valve is connected to the P oil port, the oil outlet of the first one-way valve is connected to the P1 oil port, the oil inlet of the overflow valve is connected, the oil inlet of the first speed regulating valve is connected, the first oil inlet of the first solenoid reversing valve is connected to the oil outlet of the first speed regulating valve, the second oil inlet of the first solenoid reversing valve is connected to the oil inlet of the hydraulic reversing valve, and the first oil outlet and the second oil outlet of the first solenoid reversing valve are connected to the A oil port and the B oil port.

3. The hydraulic valve assembly according to claim 1, characterized in that: The oil inlet of the second one-way valve is connected to the oil outlet of the first proportional flow valve, the oil outlet of the second one-way valve is connected to the oil inlet of the second speed regulating valve, the oil inlet of the first proportional flow valve is connected to the oil inlet of the hydraulic reversing valve, the oil outlet of the first proportional flow valve is connected to the first oil inlet of the second solenoid reversing valve, and the first oil outlet and the second oil outlet of the second solenoid reversing valve are connected to the A1 oil port and the B1 oil port.

4. The hydraulic valve assembly according to claim 1, characterized in that: The oil inlet of the third one-way valve is connected to the oil outlet of the second proportional flow valve, the oil outlet of the third one-way valve is connected to the oil inlet of the second speed regulating valve, the oil inlet of the second proportional flow valve is connected to the oil inlet of the hydraulic reversing valve, the oil outlet of the second proportional flow valve is connected to the first oil inlet of the third solenoid reversing valve and the first oil inlet of the fourth solenoid reversing valve, the first oil outlet and the second oil outlet of the third solenoid reversing valve are connected to the A2 oil port and the B2 oil port, and the first oil outlet and the second oil outlet of the fourth solenoid reversing valve are connected to the A3 oil port and the B3 oil port.

5. The hydraulic valve assembly according to claim 1, characterized in that: The P oil port of the hydraulic valve block is connected to the main pump of the hydraulic system of the fruit picking vehicle, the P1 oil port is connected to the auxiliary pump of the hydraulic system of the fruit picking vehicle, the A oil port and the B oil port are connected to the steering cylinder of the fruit picking vehicle, the A1 oil port and the B1 oil port are connected to the rotary balance valve of the fruit picking vehicle, the A2 oil port and the B2 oil port are connected to the amplitude cylinder balance valve of the fruit picking vehicle, and the A3 oil port and the B3 oil port are connected to the telescopic cylinder balance valve of the fruit picking vehicle.

6. The hydraulic valve assembly according to claim 1, characterized in that: Also includes: A damping hole, wherein a first end of the damping hole is connected to the oil inlet of the second speed regulating valve, and a second end of the damping hole is connected to the control oil port of the hydraulic reversing valve.

7. The hydraulic valve assembly according to claim 1, characterized in that: The material of the hydraulic valve block of the present invention is aluminum alloy, and the rated flow rate is 40L / min; the set pressure of the overflow valve is 220bar, and the pressure regulation range is 27.6-34.5bar; the flow rate range of the first speed regulating valve is 9.5-24L / min; the flow rate of the second speed regulating valve is 0.38L / min; the opening pressure of the hydraulic reversing valve is 11bar; the rated flow rates of the second solenoid reversing valve and the third solenoid reversing valve are 16L / min; and the rated flow rate of the fourth solenoid reversing valve is 24L / min.

8. A fruit picking vehicle, mainly composed of a chassis, a body, a rotary platform, an arm, a working platform, and a cylinder, characterized in that: It also includes the hydraulic valve group according to any one of claims 1 to 7, and the cylinders include a boom cylinder, a telescopic cylinder, a leveling cylinder and a folding arm cylinder.

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