Multi-way valve of tractor

Abstract

The utility model provides a multi-way valve of a tractor, which belongs to the technical field of agricultural machinery and is characterized in that a main shell comprises a lifting port, a descending port, an oil inlet P and an oil return port T, the lifting port and the descending port are arranged in a matched manner, and a locking valve is arranged in the lifting port; the oil inlet P and the oil return port T provide working hydraulic oil for the whole multi-way valve, oil is fed from the oil inlet P and discharged from the oil return port T according to actual working hydraulic oil, the lifting port is used for lifting, and the descending port is used for descending.

Description

TECHNICAL FIELD

[0001] The utility model relates to agricultural machinery technical field, specifically, relate to a tractor multiway valve. BACKGROUND

[0002] The hydraulic system causes the reliability and stability to be widely used in mechanical equipment such as tractor, in order to be able to complete different actions, the hydraulic system needs the control of multiway valve, and the hydraulic multiway valve is generally controlled by lifting and lowering two ways, in order to increase the regulating ability of regulating valve, realizes the single bidirectional regulation of hydraulic power system, since the hydraulic control is mostly the structure of heavy quality, therefore, when the oil circuit connection appears error or the oil pipe bursts, lifting and lowering are unstable, and it is extremely easy to bring the security hidden danger.

[0003] Therefore, a kind of multiway valve for tractor with strong reliability, complete function is urgently needed. UTILITY MODEL CONTENT

[0004] Therefore, the utility model provides a kind of multiway valve for tractor, according to the need switching use state.

[0005] The technical scheme of the utility model is realized as follows: a kind of tractor multiway valve, including main casing, the main casing includes lifting port, lowering port, oil inlet P and oil return port T, the lifting port is matched with lowering port and is arranged, first cavity, second cavity, third cavity, oil chamber and oil supply oil channel are arranged in the main casing, the oil supply oil channel is all communicated with first cavity, second cavity and third cavity, and oil inlet P and oil return port T are communicated with oil chamber.

[0006] On the basis of above technical scheme, preferably, the first cavity, second cavity and third cavity all pass through main casing, and first cavity, second cavity and third cavity are mutually parallelly arranged.

[0007] On the basis of above technical scheme, preferably, first communication oil channel is arranged between the first cavity and second cavity, second communication oil channel is arranged between second cavity and third cavity, and third communication oil channel is arranged between third cavity and oil chamber.

[0008] On the basis of above technical scheme, preferably, first installation cavity is further arranged on the main casing, one side of the oil supply oil channel is communicated with first installation cavity, the other side of the oil supply oil channel is connected with fourth communication oil channel, and the fourth communication oil channel is further communicated with first cavity.

[0009] On the basis of the above technical solutions, preferably, the lifting port comprises an A working oil port, an A working oil port, and an A working oil port; the lowering port comprises a B working oil port, a B working oil port, and a B working oil port, the A working oil port is arranged in cooperation with the B working oil port, the A working oil port is arranged in cooperation with the B working oil port, and the A working oil port is arranged in cooperation with the B working oil port.

[0010] On the basis of the above technical solutions, preferably, the A working oil port and the B working oil port are in communication with the first cavity; the A working oil port and the B working oil port are in communication with the second cavity; and the A working oil port is in communication with the B working oil port.

[0011] On the basis of the above technical solutions, preferably, the first cavity is provided with a first communication hole and a second communication hole at two ends thereof respectively; the second cavity is provided with a third communication hole and a fourth communication hole at two ends thereof respectively; and the third cavity is provided with a fifth communication hole and a sixth communication hole at two ends thereof respectively.

[0012] The tractor multi-way valve has the following beneficial effects relative to the prior art:

[0013] (1) The oil inlet P and the oil return port T provide hydraulic oil for the work of the entire multi-way valve, the actual work hydraulic oil enters from the oil inlet P and exits from the oil return port T, the lifting port is used for lifting, and the lowering port is used for lowering;

[0014] (2) The lifting port comprises a plurality of lifting ports, and the lowering port comprises a plurality of lowering ports; each lifting port is arranged in cooperation with each lowering port; the lifting port and the lowering port can comprise a plurality of lifting ports and a plurality of lowering ports; the lifting port and the lowering port can be set to be a strong lifting combination, an intermediate lifting and lowering combination, and a strong lowering combination according to needs; in this embodiment, the A1 working oil port is arranged in cooperation with the B1 working oil port, the A2 working oil port is arranged in cooperation with the B2 working oil port, and the A3 working oil port is arranged in cooperation with the B3 working oil port. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0016] Figure 1 It is a front view of the tractor multi-way valve of the present application.

[0017] Figure 2 It is a sectional view of the present application. Figure 1

[0018] Figure 3 It is an oil circuit diagram of the tractor multi-way valve of the present application.​ Detailed Implementation

[0019] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0020] like Figures 1-3 As shown, a tractor multi-way valve includes a main housing 2. The main housing 2 includes a lifting port 3, a lowering port 4, an oil inlet P5, and an oil return port T6. The lifting port 3 and the lowering port 4 are configured to cooperate with each other. The main housing 2 is provided with a first cavity 71, a second cavity 72, a third cavity 73, an oil chamber 85, and an oil supply passage 81. The oil supply passage 81 is connected to the first cavity 71, the second cavity 72, and the third cavity 73. The oil inlet P5 and the oil return port T6 are connected to the oil chamber 85.

[0021] The first cavity 71, the second cavity 72 and the third cavity 73 all pass through the main housing 2, and the first cavity 71, the second cavity 72 and the third cavity 73 are arranged in parallel to each other.

[0022] A first connecting oil passage 82 is provided between the first cavity 71 and the second cavity 72, a second connecting oil passage 83 is provided between the second cavity 72 and the third cavity 73, and a third connecting oil passage 84 is provided between the third cavity 73 and the oil cavity 85.

[0023] The main housing 2 is also provided with a first mounting cavity 9. One side of the oil supply channel 81 is connected to the first mounting cavity 9, and the other side of the oil supply channel 81 is connected to a fourth connecting channel 86. The fourth connecting channel 86 is also connected to the first cavity 71.

[0024] The lifting port 3 includes working oil port A1 31, working oil port A2 32, and working oil port A3 33; the lowering port 4 includes working oil port B1 41, working oil port B2 42, and working oil port B3 43. Working oil port A1 31 and working oil port B1 41 are configured together, working oil port A2 32 and working oil port B2 42 are configured together, and working oil port A3 33 and working oil port B3 43 are configured together.

[0025] The working oil port A1 31 and working oil port B1 41 are connected to the first cavity 71; the working oil port A2 32 and working oil port B2 42 are connected to the second cavity 72; and the working oil port A3 33 is connected to the working oil port B3 43.

[0026] The first cavity 71 is respectively provided with a first communication hole 711 and a second communication hole 712 at two ends; the second cavity 72 is respectively provided with a third communication hole 721 and a fourth communication hole 722 at two ends; the third cavity 73 is respectively provided with a fifth communication hole 731 and a sixth communication hole 732 at two ends.

[0027] The tractor multi-way valve is integrally formed, and has three working positions of strong lifting, strong lowering and floating, corresponding to A1 working oil port 31, A2 working oil port 32 and A3 working oil port 33 of the lifting port 3. The hydraulic pump oil outlet is communicated with the lifting port 3 and the lowering port 4, and when the hydraulic pump delivers oil to A1 working oil port 31, A2 working oil port 32 and A3 working oil port 33, A1 working oil port 31, A2 working oil port 32 and A3 working oil port 33 are respectively located at the three working positions of strong lifting, strong lowering and floating.

[0028] The above only describes the preferred embodiment of the present application, and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A tractor multi-way valve comprising a main housing (2), characterized in that: The main shell (2) comprises a lifting port (3), a lowering port (4), an oil inlet port P (5) and an oil return port T (6), the lifting port (3) is arranged in cooperation with the lowering port (4), the main shell (2) is provided with a first cavity (71), a second cavity (72), a third cavity (73), an oil cavity (85) and an oil supply oil channel (81), the oil supply oil channel (81) is in communication with the first cavity (71), the second cavity (72) and the third cavity (73), the oil inlet port P (5) and the oil return port T (6) are in communication with the oil cavity (85).

2. A tractor valve as claimed in claim 1, characterized in that: The first cavity (71), the second cavity (72) and the third cavity (73) all pass through the main shell (2), and the first cavity (71), the second cavity (72) and the third cavity (73) are arranged in parallel with each other.

3. A tractor valve as claimed in claim 1, wherein: The first cavity (71) and the second cavity (72) are provided with a first communication oil channel (82), the second cavity (72) and the third cavity (73) are provided with a second communication oil channel (83), and the third cavity (73) and the oil cavity (85) are provided with a third communication oil channel (84).

4. A tractor valve as claimed in claim 1, wherein: The main shell (2) is further provided with a first mounting cavity (9), one side of the oil supply oil channel (81) is in communication with the first mounting cavity (9), the other side of the oil supply oil channel (81) is connected with a fourth communication oil channel (86), and the fourth communication oil channel (86) is also in communication with the first cavity (71).

5. A tractor valve as claimed in claim 1, wherein: The lifting port (3) comprises an A1 working oil port (31), an A2 working oil port (32) and an A3 working oil port (33), the lowering port (4) comprises a B1 working oil port (41), a B2 working oil port (42) and a B3 working oil port (43), the A1 working oil port (31) is arranged in cooperation with the B1 working oil port (41), the A2 working oil port (32) is arranged in cooperation with the B2 working oil port (42), and the A3 working oil port (33) is arranged in cooperation with the B3 working oil port (43).

6. A tractor valve as claimed in claim 5 wherein: The A1 working oil port (31) and the B1 working oil port (41) are in communication with the first cavity (71); the A2 working oil port (32) and the B2 working oil port (42) are in communication with the second cavity (72); and the A3 working oil port (33) and the B3 working oil port (43) are in communication.

7. A tractor valve as claimed in claim 1, wherein: The first cavity (71) is provided with a first communication hole (711) and a second communication hole (712) at both ends respectively; the second cavity (72) is provided with a third communication hole (721) and a fourth communication hole (722) at both ends respectively; and the third cavity (73) is provided with a fifth communication hole (731) and a sixth communication hole (732) at both ends respectively.

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