Control device capable of connecting and disconnecting oil way

Abstract

The invention discloses a control device capable of connecting and disconnecting an oil way, particularly relates to the technical field of oil way control, and solves the problem that in the prior art, grease leakage is prone to occurring in a fit clearance between a valve rod and other connecting pieces of a conventional valve and a valve body or a distributor. And when the oil way is closed, due to the influence of back pressure, more energy needs to be consumed when the oil way is opened again. According to the technical scheme, an oil way is isolated from the outside through a rubber sealing sleeve, and meanwhile grooves are formed in the upper side and the lower side of an oil way channel on an execution rod; grease cannot be leaked to the outside through a fit clearance between the execution rod and the valve body, and meanwhile, high-pressure grease can be reserved in the state that an oil way is closed, so that the power needed during secondary opening is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of oil circuit control, and in particular to a control device capable of opening and closing an oil circuit. Background Art

[0002] When the grease distributor of the lubrication system is operating, the control valve needs to have a relatively fast on-off speed, and the grease pressure is relatively high. The fitting clearance between the valve stem and other connectors of existing conventional valves and the valve body or distributor is prone to grease leakage. When the oil circuit is closed, due to the influence of back pressure, more energy is required to open the oil circuit again.

[0003] The present invention is faced with the problem of how to reduce the clearance between the valve stem and other connectors and the valve body or distributor, which may cause grease leakage, and reduce the energy consumed when opening the oil circuit for the second time. Summary of the invention

[0004] Therefore, the present invention solves the problem in the prior art that grease leakage is prone to occur in the fitting clearance between the valve stem and other connecting parts of conventional valves and the valve body or distributor; and the technical problem that when the oil circuit is closed, due to the influence of back pressure, more energy is required to open the oil circuit again; the present invention provides a control device capable of opening and closing the oil circuit, and the rubber sealing sleeve isolates the oil circuit from the outside world, so that the grease cannot leak to the outside world through the fitting clearance between the actuator rod and the valve body, and the grooves arranged on the upper and lower sides of the oil circuit channel on the actuator rod can retain high-pressure grease when the oil circuit is closed, reducing the power required for the second opening.

[0005] The present invention provides a control device capable of opening and closing an oil circuit, comprising a valve body, wherein an oil circuit and a control channel intersecting the oil circuit are provided in the valve body; a control mechanism is provided in the control channel, and the control mechanism is used to control the opening and closing of the oil circuit. The control channel is composed of a cylindrical channel and a square channel, and the square channel is located above the cylindrical channel. Channels of different shapes are used to accommodate different parts of the control mechanism and to limit the control mechanism.

[0006] Furthermore, the control mechanism includes an actuator rod, which is vertically arranged in a cylindrical channel; a lubricating oil channel connected to the oil circuit is provided in the actuator rod; a locking block is provided on the top of the actuator rod; a locking shaft is provided on the top of the locking block; a locking cavity with a hollow top is provided in the locking shaft; an inclined surface is provided on the side wall of the locking shaft; a transmission shaft is provided in the locking cavity, and a cylindrical protrusion is provided on the side wall of the transmission shaft near the bottom, and the cylindrical protrusion contacts the inclined surface; an end cover is provided on the outer sleeve of the locking shaft, and the transmission shaft passes through the end cover upward, and the transmission shaft and the end cover are connected in rotation. The transmission shaft and the end cover can be connected in rotation by the cooperation of annular grooves and annular protrusions or by the cooperation of bearings, so that the transmission shaft can only rotate but cannot move up and down. A triangular notch is cut into the side wall of the locking shaft, and a slope and a vertical surface intersecting with the slope are formed on the side wall.

[0007] Furthermore, symmetrical diamond-shaped grooves are provided on both sides of the locking block. A first semicircular groove is provided at the lowest end of the diamond-shaped groove, a first oblique protrusion is provided above the first semicircular groove, a second semicircular groove and a third semicircular groove are provided on both sides of the uppermost end of the diamond-shaped groove, the second semicircular groove and the third semicircular groove are connected by a second oblique protrusion, a fourth semicircular groove is provided in the middle below the second oblique protrusion, and a third oblique protrusion and a fourth oblique protrusion are provided on both sides of the fourth semicircular groove. Rotary locking pieces are provided on both sides of the locking block; the top end of the rotary locking piece is rotatably connected to the end cover; a locking protrusion is provided on the side wall of the rotary locking piece close to the bottom; the locking protrusion is located in the diamond-shaped groove. In the attached Figure 5 In the embodiment, the first oblique protrusion is inclined to the left; the second oblique protrusion, the third oblique protrusion and the fourth oblique protrusion are all inclined to the right, so as to ensure that the locking protrusion can always move in the diamond groove in the same direction.

[0008] Furthermore, a spring is sleeved on the outer surface of the upper end of the actuator rod; the top end of the spring is connected to the actuator rod, and the bottom end is connected to the bottom of the square channel. A rubber sealing sleeve is provided on the surface of the actuator rod, and the spring sleeve is provided outside the rubber sealing sleeve. The rubber sealing sleeve is sleeved on the surface of the actuator rod to reduce the gap between it and the cylindrical channel, separate the oil circuit from the outside world, and effectively avoid the problem of grease penetration. The rubber sealing sleeve can be fixed by a nut.

[0009] Furthermore, lubricating oil grooves are provided on the upper and lower sides of the lubricating oil channel on the actuator rod. The lubricating oil grooves provided on the upper and lower sides of the lubricating oil channel on the actuator rod can retain high-pressure grease when the oil circuit is closed to reduce the power required for secondary opening.

[0010] Furthermore, the rotary locking member is rotatably connected to the end cover via a pin, so that the rotary locking member can rotate relative to the end cover.

[0011] In the above technical solution, the technical effects and advantages provided by the present invention are:

[0012] 1. The present invention provides a control device capable of opening and closing an oil circuit, which isolates the oil circuit from the outside world through a rubber sealing sleeve, so that grease cannot leak to the outside world through the matching gap between the actuator rod and the valve body. In combination with the grooves arranged on the upper and lower sides of the oil circuit channel on the actuator rod, high-pressure grease can be retained when the oil circuit is closed to reduce the power required for secondary opening.

[0013] 2. The present invention provides a control device capable of opening and closing an oil circuit. The rotating transmission shaft only needs to rotate 90 degrees to complete the operation of opening and closing the oil circuit, so that the speed of opening and closing the oil circuit is relatively improved, and the present invention is more convenient to manufacture and assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0015] Figure 1 A schematic diagram of the internal structure of a control device capable of opening and closing an oil circuit provided by the present invention;

[0016] Figure 2 A schematic diagram of the external structure of a control device capable of opening and closing an oil circuit provided by the present invention;

[0017] Figure 3 A schematic diagram of the cooperation between the rotary locking member and the locking block of the control device capable of opening and closing the oil circuit provided by the present invention;

[0018] Figure 4 A schematic diagram of the cooperation between the actuator rod and the locking shaft of the control device capable of opening and closing the oil circuit provided by the present invention;

[0019] Figure 5 A schematic diagram of the structure of a diamond-shaped groove of a control device capable of opening and closing an oil circuit provided by the present invention;

[0020] Figure 6 A schematic diagram of the transmission shaft structure of the control device capable of opening and closing the oil circuit provided by the present invention;

[0021] Figure 7 A schematic diagram of the structure of a rotary locking member of a control device capable of opening and closing an oil circuit provided by the present invention;

[0022] Figure 8 for Figure 1 An enlarged schematic diagram of the rubber sealing sleeve at A;

[0023] Fig. 9 A schematic diagram of the structure of the actuator rod of the control device capable of opening and closing the oil circuit provided by the present invention;

[0024] Fig.10 A schematic diagram of the spring structure of the control device capable of opening and closing the oil circuit provided by the present invention.

[0025] Description of reference numerals:

[0026] 1. Transmission shaft; 1a. Cylindrical protrusion; 2. End cover; 3. Valve body; 4. Pin; 5. Rotary locking member; 5a. Locking protrusion; 6. Locking block; 6a. Inclined surface; 6b. Second semicircular groove; 6c. Third oblique protrusion; 6d. Fourth semicircular groove; 6e. First semicircular groove; 6f. Second oblique protrusion; 6g. Third semicircular groove; 6h. Fourth oblique protrusion; 6k. First oblique protrusion; 7. Rubber sealing sleeve; 8. Actuator rod; 8a. Lubricating oil groove; 9. Spring; 10. Cylindrical channel; 11. Square channel; 12. Locking shaft; 13. Diamond groove; 14. Oil circuit; 15. Lubricating oil channel. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0028] Embodiment 1:

[0029] This embodiment provides a control device capable of opening and closing an oil circuit, such as Figure 1It mainly comprises a valve body 3, in which an oil circuit 14 and a control channel intersecting with the oil circuit 14 are provided; a control mechanism is provided in the control channel, and the control mechanism is used to control the on-off of the oil circuit 14. The control channel consists of a cylindrical channel 10 and a square channel 11, and the square channel 11 is located above the cylindrical channel 10. The control mechanism includes an actuator rod 8, which is vertically arranged in a cylindrical channel 10; a lubricating oil channel 15 connected to an oil circuit 14 is provided in the actuator rod 8; a locking block 6 is provided on the top of the actuator rod 8; a locking shaft 12 is provided on the top of the locking block 6; a locking cavity with a hollow top is provided in the locking shaft 12; an inclined surface 6a is provided on the side wall of the locking shaft 12; a transmission shaft 1 is provided in the locking cavity, and a cylindrical protrusion 1a is provided on the side wall of the transmission shaft 1 near the bottom, and the cylindrical protrusion 1a contacts the inclined surface 6a; an end cover 2 is provided on the outer cover of the locking shaft 12, and the transmission shaft 1 passes through the end cover 2 upward, and the transmission shaft 1 is rotatably connected to the end cover 2. Symmetrical rhombus grooves 13 are provided on both sides of the locking block 6. The lowermost end of the diamond groove 13 is provided with a first semicircular groove 6e, and a first oblique protrusion 6k is provided above the first semicircular groove 6e. The uppermost ends of the diamond groove 13 are provided with a second semicircular groove 6b and a third semicircular groove 6g, respectively. The second semicircular groove 6b and the third semicircular groove 6g are connected by a second oblique protrusion 6f. A fourth semicircular groove 6d is provided in the middle below the second oblique protrusion 6f, and the third oblique protrusion 6c and the fourth oblique protrusion 6h are provided on both sides of the fourth semicircular groove 6d. Rotary locking members 5 are provided on both sides of the locking block 6; the top end of the rotary locking member 5 is rotatably connected to the end cover 2; the side wall of the rotary locking member 5 near the bottom is provided with a locking protrusion 5a; the locking protrusion 5a is located in the diamond groove 13. The outer surface of the upper end of the actuator rod 8 is sleeved with a spring 9; the top end of the spring 9 is connected to the actuator rod 8, and the lower end is connected to the bottom side wall of the square channel 11. The rotary locking member 5 is rotatably connected to the end cover 2 via a pin 4 .

[0030] In the initial state, the locking protrusion 5a on the rotary locking member 5 is located in the first semicircular groove 6e, the spring 9 is in a semi-compressed state, and the first semicircular groove 6e limits the locking protrusion 5a, so that the locking block 6 cannot move upward; the lubricating oil channel 15 on the actuator 8 is connected to the oil circuit 14; the oil circuit 14 is connected; at this time, a certain space is reserved between the bottom of the actuator rod 8 and the bottom of the cylindrical channel 10, so that the actuator rod 8 can move downward until the lubricating oil channel 15 is completely offset from the oil circuit 14. When the oil circuit 14 needs to be closed, the transmission shaft 1 is rotated, and the cylindrical protrusion 1a on the transmission shaft 1 contacts the lower area of ​​the inclined surface 6a in the initial state. The transmission shaft 1 is rotated, and the cylindrical protrusion 1a moves along the inclined surface 6a to the higher area of ​​the inclined surface 6a, which will squeeze the locking shaft 12 downward. The locking shaft 12 drives the actuator rod 8 to move downward through the locking block 6 so that the lubricating oil channel 15 and the oil circuit 14 are completely offset; in the process of the locking shaft 12 driving the locking block 6 to move downward, the locking protrusion 5a first disengages from the first semicircular groove 6e and moves upward, and under the limitation of the first oblique protrusion 6k, the locking protrusion 5a will move along the oblique groove of the right half of the prismatic groove to the fourth oblique protrusion 6h, and under its action, the locking protrusion 5a enters the third semicircular groove 6g. Under the limitation of the top of the third semicircular groove 6g, the locking block 6 cannot Continue to move downward, that is, the transmission shaft 1 cannot rotate. When the power on the transmission shaft 1 is removed, the locking block 6 will be pushed upward by the action of the spring 9 for a short distance. At this time, the locking protrusion 5a is disengaged from the third semicircular groove 6g. Under the action of gravity, the locking protrusion 5a shifts to the left and contacts the second oblique protrusion 6f. The spring 9 then pushes the locking block 6 to move upward, forcing the locking protrusion 5a to move right under the action of the second oblique protrusion 6f. After hitting the left side of the fourth oblique protrusion 6h and entering the fourth semicircular groove 6d, the second oblique protrusion 6f and the third oblique protrusion 6c limit the locking protrusion 5a, so that the locking protrusion 5a is stabilized in the fourth semicircular groove 6d. Under the resistance at the bottom of the fourth semicircular groove 6d, the spring 9 can no longer push the locking block 6, thereby fixing the position of the actuator rod 8 and realizing the closure of the oil circuit 14.

[0031] When the oil circuit 14 needs to be opened again, there is space at the top of the fourth semicircular groove 6d, so the transmission shaft 1 can continue to rotate to move the locking block 6 downward a certain distance, and the locking protrusion 5a contacts the second oblique protrusion 6f, and moves to the left under the action of the second oblique protrusion 6f into the second semicircular groove 6b. Under the restriction of the top of the second semicircular groove 6b, the locking block 6 cannot move downward, and there is space at the bottom of the second semicircular groove 6b so that the spring 9 can push the locking block 6 upward. Under the restriction of the third oblique protrusion 6c, the locking protrusion 5a moves along the oblique groove of the left half of the diamond groove 13 to the first semicircular groove 6e and is fixed. At this time, the lubricating oil channel 15 is connected to the oil circuit 14.

[0032] Embodiment 2:

[0033] Different from the above-mentioned embodiment, this embodiment is based on the above-mentioned embodiment, and lubricating oil grooves 8a are opened on the upper and lower sides of the lubricating oil channel 15 on the actuator rod 8; when the actuator rod 8 is brought to the specified position to complete the task of closing the oil circuit 14, during the process of closing the oil circuit 14, the high-pressure lubricating oil enters the other side through the lubricating oil channel 15 on the actuator rod 8, and at the same time, the high-pressure lubricating oil also flows into the other side through the lubricating oil groove 8a on the actuator rod 8. When the oil circuit 14 is completely closed, the high-pressure lubricating oil fills the lubricating oil groove 8a on the entire actuator rod 8 and is retained, which reduces the back pressure and reduces the power when the oil circuit 14 is opened again.

[0034] Embodiment 3:

[0035] Different from the above-mentioned embodiment, this embodiment is based on the above-mentioned embodiment, and a rubber sealing sleeve 7 is arranged on the surface of the actuator rod 8, and the spring 9 is arranged outside the rubber sealing sleeve 7; the rubber sealing sleeve 7 isolates the oil circuit 14 from the outside world, so that grease cannot leak to the outside world through the fitting gap between the actuator rod 8 and the valve body 3.

[0036] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A control device capable of opening and closing an oil circuit, characterized in that: It comprises a valve body (3), wherein an oil circuit (14) and a control channel intersecting with the oil circuit (14) are provided in the valve body (3); a control mechanism is provided in the control channel, and the control mechanism is used to control the on and off of the oil circuit (14).

2. The control device capable of switching on and off the oil circuit according to claim 1, characterized in that: The control channel consists of a cylindrical channel (10) and a square channel (11), wherein the square channel (11) is located above the cylindrical channel (10) and is connected vertically.

3. The control device capable of switching on and off the oil circuit according to claim 2, characterized in that: The control mechanism comprises an actuator rod (8), the bottom of which is located in a cylindrical channel (10); a lubricating oil channel (15) is provided in the actuator rod (8) and runs through the actuator rod (8) in a transverse direction; a locking block (6) is provided at the top of the actuator rod (8); a locking shaft (12) is provided at the top of the locking block (6); a locking cavity with a hollow top is provided in the locking shaft (12); an inclined surface (6a) is provided on the side wall of the locking shaft (12); a transmission shaft (1) is provided in the locking cavity, a cylindrical protrusion (1a) is provided on the side wall of the transmission shaft (1) close to the bottom, and the cylindrical protrusion (1a) contacts the inclined surface (6a); an end cover (2) is provided on the outer cover of the locking shaft (12), the transmission shaft (1) passes through the end cover (2) upwards, and the transmission shaft (1) and the end cover (2) are rotatably connected.

4. The control device capable of switching on and off the oil circuit according to claim 3, characterized in that: Symmetrical diamond-shaped grooves (13) are formed on both side surfaces of the locking block (6).

5. The control device capable of switching on and off the oil circuit according to claim 4, characterized in that: A first semicircular groove (6e) is provided at the bottom end of the diamond groove (13), a first oblique protrusion (6k) is provided above the first semicircular groove (6e), a second semicircular groove (6b) and a third semicircular groove (6g) are provided on both sides of the top end of the diamond groove (13), the second semicircular groove (6b) and the third semicircular groove (6g) are connected by a second oblique protrusion (6f), a fourth semicircular groove (6d) is provided in the middle below the second oblique protrusion (6f), and a third oblique protrusion (6c) and a fourth oblique protrusion (6h) are provided on both sides of the fourth semicircular groove (6d).

6. The control device capable of switching on and off the oil circuit according to claim 2, characterized in that: Rotary locking members (5) are provided on both sides of the locking block (6); the top end of the rotary locking member (5) is rotatably connected to the end cover (2); a locking protrusion (5a) is provided on the side wall of the rotary locking member (5) close to the bottom; and the locking protrusion (5a) is located in the rhombus groove (13).

7. The control device capable of switching on and off the oil circuit according to claim 6, characterized in that: A spring (9) is sleeved on the outer surface of the upper end of the actuating rod (8); the top end of the spring (9) is connected to the actuating rod (8), and the bottom end is connected to the bottom of the square channel (11).

8. The control device capable of switching on and off the oil circuit according to claim 7, characterized in that: Lubricating oil grooves (8a) are respectively provided on the upper and lower sides of the lubricating oil channel (15) on the actuator rod (8).

9. The control device capable of switching on and off the oil circuit according to claim 8, characterized in that: The rotary locking member (5) is rotationally connected to the end cover (2) via a pin (4).

10. The control device capable of switching on and off the oil circuit according to claim 9, characterized in that: A rubber sealing sleeve (7) is arranged on the surface of the actuating rod (8), and a spring (9) is sleeved outside the rubber sealing sleeve (7).

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