Three-position six-way valve

Abstract

The utility model provides a three-position six-way valve which comprises a body and an installation seat, the body comprises a valve body and a valve core, the valve core is movably installed inside the valve body through an inner cavity, the bottom of the inner cavity is provided with four mutually communicated oil return ports and an oil inlet, and the oil inlet and the oil return ports are arranged in a staggered mode. The three-position six-way valve can achieve the functions of a middle position, a left position and a right position through movement adjustment of the valve element in the inner cavity, accurate and flexible control over the crawler-type harvester is facilitated through control over the three-position six-way valve, and separation and combination of a clutch are more flexible; the valve body can be conveniently and rapidly installed and fixed through clamping mechanisms such as the fixing block, the button and the fixing plate, the valve body can be limited through the arranged square groove and the arranged square frame, the stability of the valve body is improved, and practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of turning control for crawler harvesters, in particular to a three-position six-way valve. Background Art

[0002] The existing crawler harvesters turn by disengaging the clutch and braking with friction plates. For example, when the crawler harvester turns left, the transmission power of the left crawler is disengaged, and a large turn is achieved. The left crawler can drag and decelerate while the right crawler moves forward. At this time, the turn is achieved due to the speed difference between the left and right crawlers. If a small turn is required, braking force is applied to the left crawler transmission mechanism. At this time, the speed of the left crawler decreases or even stops due to increased resistance. The gearbox consists of four clutches, namely the left crawler brake clutch, the left drive clutch, the right drive clutch, and the right brake clutch. Using multiple valves to control the turning of the crawler harvester makes the oil circuit of the crawler harvester more complicated and less flexible. In order to better achieve precise and flexible control of the crawler harvester, the disengagement and engagement of the clutch are made more flexible.

[0003] To this end, the utility model provides a three-position six-way valve. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a three-position six-way valve to solve the problems raised in the above-mentioned background technology. The present invention facilitates the precise and flexible control of the crawler harvester by controlling the three-position six-way valve, and realizes more flexible disengagement and engagement of the clutch.

[0005] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical scheme: a three-position six-way valve, including a main body and a mounting seat, the main body including a valve body and a valve core, the valve core is movably installed inside the valve body through an inner cavity, the bottom of the inner cavity is provided with four mutually connected return oil ports and an oil inlet, the oil inlet and the return oil port are staggered with each other, the top of the inner cavity is provided with a first working port, a second working port, a third working port and a fourth working port from left to right, the shape of the mounting seat is "L"-shaped, the valve body is installed on the mounting seat through a clamping mechanism, the clamping mechanism includes a fixed block, a mounting plate and a button, the bottom end of the mounting plate is symmetrically fixed with a fixed plate, the button is symmetrically and movably arranged inside the two ends of the fixed block, and a reset mechanism is provided between one end of the valve core and the valve body.

[0006] Furthermore, the other end of the valve core is arranged at a position corresponding to a mounting seat on the outer side of the valve body, and a mounting hole is provided inside the other end of the valve core.

[0007] Furthermore, the reset mechanism includes a mounting cover, which is fixedly mounted on one end of the valve body by bolts, a sealing gasket is fixedly mounted between the mounting cover and the valve body, and a screw is threadedly mounted on one end of the valve core.

[0008] Furthermore, two mounting sleeves are slidably mounted on one end of the screw, a return spring is mounted between the two mounting sleeves, and the return spring is sleeved on the outside of the screw.

[0009] Furthermore, a square groove is provided inside one end of the mounting seat, and a square frame is fixedly provided at the bottom of the valve body, and the square frame is installed inside the square groove.

[0010] Furthermore, the bottom ends of the oil return port and the oil inlet are arranged inside the square groove, and screw holes are symmetrically fixedly provided on both sides of the bottom of the mounting seat.

[0011] Furthermore, the fixing block is fixedly mounted on the top of one end of the mounting seat, the button is in a "U" shape, and a spring is fixedly mounted between the button and the fixing block.

[0012] Furthermore, the mounting plate is fixed to the outer wall of the other end of the valve body by bolts, a slot is provided inside the fixing plate, one end of the button is clamped and installed inside the slot, and a through hole is provided inside the top end of the mounting seat.

[0013] The beneficial effects of the present invention are as follows: the three-position six-way valve of the present invention is adjusted by the movement of the valve core inside the inner cavity, so that the three-position six-way valve can realize the functions of the middle position, the left position and the right position, and facilitates the precise and flexible control of the crawler harvester by controlling the three-position six-way valve, making the disengagement and engagement of the clutch more flexible; the valve body can be quickly installed and fixed by the clamping mechanisms such as the fixing block, the button and the fixing plate, and the valve body can be limited by the provided square groove and square frame, thereby improving the stability of the valve body and having high practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural diagram of a three-position six-way valve of the utility model;

[0015] Figure 2 This is a structural diagram of the mounting seat of the three-position six-way valve of the utility model;

[0016] Figure 3 This is a button structure diagram of the three-position six-way valve of the utility model;

[0017] Figure 4 This is a cross-sectional view of the neutral position of the three-position six-way valve of the present invention;

[0018] Figure 5 This is a cross-sectional view of the right position of the three-position six-way valve of the utility model;

[0019] Figure 6 This is a cross-sectional view of the left position of the three-position six-way valve of the utility model;

[0020] In the figure: 1. Valve body; 2. Valve core; 3. Mounting plate; 4. Reset mechanism; 5. Mounting seat; 6. Fixing block; 7. Through hole; 8. Fixing plate; 9. Button; 10. Oil return port; 11. Oil inlet; 12. First working port; 13. Second working port; 14. Third working port; 15. Fourth working port; 16. Square groove; 17. Mounting hole; 18. Square frame; 19. Screw hole; 20. Inner cavity; 21. Mounting cover; 22. Screw; 23. Mounting sleeve; 24. Reset spring. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] See also Figures 1 to 6 The utility model provides a technical solution: a three-position six-way valve, including a body and a mounting seat 5, the body including a valve body 1 and a valve core 2, the valve core 2 is movably mounted inside the valve body 1 through an inner cavity 20, the bottom of the inner cavity 20 is provided with four mutually connected return oil ports 10 and an oil inlet 11, the oil inlet 11 and the return oil port 10 are staggered with each other, the top of the inner cavity 20 is provided with a first working port 12, a second working port 13, a third working port 14 and a fourth working port 15 from left to right, the shape of the mounting seat 5 is "L"-shaped, the valve body 1 is mounted by a clamping mechanism On the mounting seat 5, the clamping mechanism includes a fixed block 6, a mounting plate 3 and a button 9. A fixed plate 8 is symmetrically fixed at the bottom end of the mounting plate 3. The button 9 is symmetrically and movably arranged inside the two ends of the fixed block 6. A reset mechanism 4 is provided between one end of the valve core 2 and the valve body 1. By moving the valve core 2 inside the inner cavity 20, the first working port 12, the second working port 13, the third working port 14 and the fourth working port 15 can be connected to the inner cavity 20 respectively, which facilitates the precise and flexible control of the steering of the crawler harvester and makes the disengagement and engagement of the crawler harvester clutch more flexible.

[0023] In this embodiment, the other end of the valve core 2 is arranged at the position of the mounting seat 5 on the outside of the valve body 1, and a mounting hole 17 is opened inside the other end of the valve core 2. The reset mechanism 4 includes a mounting cover 21, and the mounting cover 21 is fixedly mounted on one end of the valve body 1 by bolts. A sealing gasket is fixedly installed between the mounting cover 21 and the valve body 1. A screw 22 is threadedly installed on one end of the valve core 2, and two mounting sleeves 23 are slidably installed on one end of the screw 22. A reset spring 24 is installed between the two mounting sleeves 23, and the reset spring 24 is sleeved on the outside of the screw 22. By arranging the mounting sleeve 23 and the reset spring 24, the valve core 2 can be rebounded to the left, which is convenient for adjusting the valve core 2. The sealing gasket can improve the sealing between the reset mechanism 4 and the valve body 1.

[0024] In this embodiment, a square groove 16 is opened inside one end of the mounting seat 5, and a square frame 18 is fixedly set at the bottom of the valve body 1, and the square frame 18 is installed inside the square groove 16. The bottom ends of the oil return port 10 and the oil inlet 11 are set inside the square groove 16, and screw holes 19 are symmetrically fixed on both sides of the bottom of the mounting seat 5. The valve body 1 can be positioned through the square groove 16 and the square frame 18, which facilitates the installation of the valve body 1 on the mounting seat 5, and will not affect the connection between the oil return port 10 and the oil inlet 11 and the oil pipe.

[0025] In this embodiment, the fixing block 6 is fixedly installed on the top of one end of the mounting seat 5, the button 9 is in a "U" shape, and a spring is fixedly installed between the button 9 and the fixing block 6. The mounting plate 3 is fixed to the outer wall of the other end of the valve body 1 by bolts, and a card slot is provided inside the fixing plate 8. One end of the button 9 is card-engaged in the inside of the card slot. A through hole 7 is provided inside the top of the mounting seat 5. By pressing the button 9, one end thereof can be moved out from the inside of the card slot, which facilitates the separation of the button 9 from the fixing plate 8, thereby facilitating the disassembly of the valve body 1 and the installation of the valve body 1.

[0026] When using the wooden door with storage function, the mounting base 5 is fixed through the screw hole 19 on the mounting base 5, and the button 9 is pressed. The button 9 compresses the spring and slides into the inside of the fixing block 6 to install the valve body 1 on the mounting base 5, and the valve body 1 drives the square frame 18 to be inserted into the inside of the square groove 16, which is convenient for positioning and limiting the valve body 1. At this time, the fixing plate 8 is installed on both sides of the fixing block 6, and the card slot is opposite to one end of the button 9. Release the button 9, and the button 9 moves in the opposite direction under the elastic force of the spring, and one end of it is stuck in the inside of the card slot, so as to facilitate the fixed installation of the valve body 1 and the mounting plate 3. The return oil port 10 is connected to the return oil tank through the oil pipe, and the oil inlet 11 is connected to the return oil tank through the oil pipe. The first working port 12, the second working port 13, the third working port 14 and the fourth working port 15 are respectively fixedly connected to the left track brake clutch, the left drive clutch, the right drive clutch and the right track brake clutch through oil pipes. A driving mechanism is installed at the position of the through hole 7 on the side wall of the top of the mounting seat 5. The driving mechanism is fixedly connected to one end of the valve core 2 through the mounting hole 17. The valve core 2 is driven by the driving mechanism to move laterally inside the inner cavity 20. The two ends of the valve core 2 are fixedly provided with sealing rubber rings on the inner wall of the valve body 1. When the valve core 2 moves to the middle position, the oil inlet 11 is connected to the second working port 13, the third working port 14 and the fourth working port 15 through the inner cavity 20. The first working port 12 and the fourth working port 15 are connected through the inner cavity 20 and the oil return port 10 to return oil, so that the crawler harvester can move forward; when the valve core 2 moves to the right position, the oil inlet 11 is connected with the third working port 14 and the fourth working port 15 through the inner cavity 20, and the oil return port 10 is connected with the first working port 12 and the second working port 13 through the inner cavity 20, so that the left drive clutch is disengaged, the power of the left crawler is weakened, the right crawler continues to work, and the crawler harvester turns to the left; when the valve core 2 moves to the left position, the oil inlet 11 is connected with the first working port 12 and the second working port 13 through the inner cavity 20, and the oil return port 10 is connected with the third working port 1 4 is connected to the fourth working port 15, so that the right clutch is disengaged, the right power is weakened, the left crawler operates normally, and the crawler harvester turns to the right. Through the movement and adjustment of the valve core 2 inside the inner cavity 20, the three-position six-way valve can realize the functions of the middle position, the left position and the right position, which facilitates the precise and flexible control of the crawler harvester through the control of the three-position six-way valve, making the disengagement and engagement of the clutch more flexible; the valve body 1 is conveniently installed and fixed quickly by the clamping mechanisms such as the fixing block 6, the button 9 and the fixing plate 8, and the valve body 1 can be limited by the provided square groove 16 and the square frame 18, thereby improving the stability of the valve body 1 and having high practicality.

[0027] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A three-position six-way valve, comprising a body and a mounting seat (5), characterized in that: The main body comprises a valve body (1) and a valve core (2), the valve core (2) is movably mounted inside the valve body (1) through an inner cavity (20), the bottom of the inner cavity (20) is provided with four oil return ports (10) and an oil inlet (11) which are interconnected, the oil inlet (11) and the oil return port (10) are staggered with each other, the top of the inner cavity (20) is provided with a first working port (12), a second working port (13), a third working port (14) and a fourth working port (15) from left to right, the shape of the mounting seat (5) is "L"-shaped, the valve body (1) is mounted on the mounting seat (5) through a clamping mechanism, the clamping mechanism comprises a fixing block (6), a mounting plate (3) and a button (9), the bottom end of the mounting plate (3) is symmetrically fixed with a fixing plate (8), the button (9) is symmetrically movably arranged inside the two ends of the fixing block (6), and a reset mechanism (4) is provided between one end of the valve core (2) and the valve body (1).

2. The three-position six-way valve according to claim 1, characterized in that: The other end of the valve core (2) is arranged at a position corresponding to the mounting seat (5) on the outside of the valve body (1), and a mounting hole (17) is provided inside the other end of the valve core (2).

3. The three-position six-way valve according to claim 2, characterized in that: The reset mechanism (4) comprises a mounting cover (21), the mounting cover (21) being fixedly mounted on one end of the valve body (1) by means of bolts, a sealing gasket being fixedly mounted between the mounting cover (21) and the valve body (1), and a screw (22) being threadedly mounted on one end of the valve core (2).

4. The three-position six-way valve according to claim 3, characterized in that: Two mounting sleeves (23) are slidably mounted on one end of the screw (22), a return spring (24) is mounted between the two mounting sleeves (23), and the return spring (24) is sleeved on the outside of the screw (22).

5. The three-position six-way valve according to claim 1, characterized in that: A square groove (16) is provided inside one end of the mounting seat (5), and a square frame (18) is fixedly provided at the bottom of the valve body (1), and the square frame (18) is installed inside the square groove (16).

6. The three-position six-way valve according to claim 5, characterized in that: The bottom ends of the oil return port (10) and the oil inlet (11) are arranged inside the square groove (16), and screw holes (19) are symmetrically fixedly provided on both sides of the bottom of the mounting seat (5).

7. The three-position six-way valve according to claim 1, characterized in that: The fixing block (6) is fixedly mounted on the top of one end of the mounting seat (5); the button (9) is in a "U" shape; a spring is fixedly mounted between the button (9) and the fixing block (6).

8. The three-position six-way valve according to claim 7, characterized in that: The mounting plate (3) is fixedly mounted on the outer wall of the other end of the valve body (1) by means of bolts, a slot is provided inside the fixing plate (8), one end of the button (9) is snap-fitted and mounted inside the slot, and a through hole (7) is provided inside the top end of the mounting seat (5).

Images