A control device capable of switching oil circuits on and off

Abstract

This invention discloses a control device capable of opening and closing an oil circuit, specifically relating to the field of oil circuit control technology. It solves the technical problem in existing technologies where grease leakage easily occurs in the fitting gap between the valve stem and other connecting parts of conventional valves and the valve body or distributor; and where the back pressure when the oil circuit is closed requires more energy to reopen. The technical solution involves isolating the oil circuit from the outside environment using a rubber sealing sleeve, and simultaneously providing grooves on the upper and lower sides of the oil circuit channel on the actuator. This invention prevents grease from leaking to the outside through the fitting gap between the actuator and the valve body, and also allows high-pressure grease to be retained when the oil circuit is closed, reducing the power required for secondary reopening.

Description

Technical Field

[0001] This invention relates to the field of oil circuit control technology, and more specifically to a control device capable of switching on and off oil circuits. Background Technology

[0002] When the grease distributor of the lubrication system is in operation, the control valve needs to be opened and closed relatively quickly, and the grease pressure is relatively high. The fit clearance between the valve stem and other connecting parts of the existing conventional valve and the valve body or distributor is prone to grease leakage. When the oil circuit is closed, the back pressure makes it more energy-intensive to reopen the oil circuit.

[0003] The challenges faced by this invention are how to reduce the gap between the valve stem and other connecting parts and the valve body or distributor to prevent grease leakage, and how to reduce the energy required to open the oil circuit a second time. Summary of the Invention

[0004] Therefore, this invention solves the problem in the prior art where grease leakage easily occurs in the fitting gap 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, the back pressure makes it more energy-intensive to reopen the oil circuit. This invention provides a control device that can open and close the oil circuit. The rubber sealing sleeve isolates the oil circuit from the outside world, preventing grease from leaking to the outside through the fitting gap between the actuator and the valve body. Combined with the grooves on the upper and lower sides of the oil circuit channel on the actuator, high-pressure grease can be retained when the oil circuit is closed, reducing the power required for secondary reopening.

[0005] This 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 formed within the valve body; a control mechanism is disposed within the control channel, the control mechanism being used to control the opening and closing of the oil circuit. The control channel is composed of a cylindrical channel and a square channel, with the square channel located above the cylindrical channel. The different shaped channels are used to accommodate different parts of the control mechanism and to limit the movement of the control mechanism.

[0006] Furthermore, the control mechanism includes an actuator rod vertically positioned within a cylindrical channel; the actuator rod has a lubricating oil channel communicating with an oil circuit; a locking block is positioned at the top of the actuator rod; a locking shaft is positioned at the top of the locking block; a locking cavity with a hollowed-out top is positioned within the locking shaft; an inclined surface is positioned on the side wall of the locking shaft; a drive shaft is positioned within the locking cavity, and a cylindrical protrusion is positioned on the side wall of the drive shaft near the bottom, the cylindrical protrusion contacting the inclined surface; an end cap is fitted over the locking shaft, and the drive shaft passes upward through the end cap, with a rotatable connection between the drive shaft and the end cap. The drive shaft and the end cap can be rotatably connected through an annular groove and annular protrusion or through a bearing, thus ensuring that the drive shaft can only rotate and cannot move up and down. A triangular notch is cut into the side wall of the locking shaft, forming an inclined surface and a vertical surface intersecting the inclined surface.

[0007] Furthermore, the locking block has symmetrical diamond-shaped grooves on both sides. A first semi-circular groove is provided at the lowest end of each diamond-shaped groove, and a first oblique protrusion is provided above the first semi-circular groove. A second semi-circular groove and a third semi-circular groove are respectively provided on both sides of the uppermost end of the diamond-shaped groove, connected by a second oblique protrusion. A fourth semi-circular groove is provided in the center below the second oblique protrusion, and a third oblique protrusion and a fourth oblique protrusion are respectively provided on both sides of the fourth semi-circular groove. Rotary locking components are provided on both sides of the locking block; the top of each rotary locking component is rotatably connected to the end cap; a locking protrusion is provided on the side wall of the rotary locking component near the bottom; the locking protrusion is located within the diamond-shaped groove. (See attached...) Figure 5 In the middle, the first oblique protrusion tilts to the left; the second, third, and fourth oblique protrusions all tilt to the right, thus ensuring that the locking protrusion can always move in the same direction within the diamond groove.

[0008] Furthermore, a spring is fitted onto 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 is fitted over the rubber sealing sleeve. The rubber sealing sleeve on the surface of the actuator rod reduces the gap between it and the cylindrical channel, separating the oil passage from the outside environment and effectively preventing 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. These lubricating oil grooves 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, reducing the power required for secondary reopening.

[0010] Furthermore, the rotary locking element is rotatably connected to the end cover via a pin. This allows the rotary locking element to rotate relative to the end cover.

[0011] The technical effects and advantages provided by the present invention in the above technical solution are as follows:

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

[0013] 2. The present invention provides a control device capable of switching on and off oil circuits. The operation of switching on and off oil circuits can be completed by rotating the drive shaft by only 90 degrees, which improves the speed of switching on and off oil circuits. Moreover, the present invention is more convenient to manufacture and assemble. Attached Figure Description

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described 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 the control device capable of opening and closing the oil circuit provided by the present invention;

[0016] Figure 2 A schematic diagram of the external structure of the control device for switching on and off oil circuits provided by the present invention;

[0017] Figure 3 A schematic diagram illustrating the engagement between the rotary locking element and the locking block of the control device for opening and closing oil circuits provided by the present invention;

[0018] Figure 4 A schematic diagram illustrating the engagement between the actuator and the locking shaft of the control device for opening and closing oil circuits provided by the present invention;

[0019] Figure 5 A schematic diagram of the diamond-shaped groove in the control device for switching on and off oil circuits provided by the present invention;

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

[0021] Figure 7 A schematic diagram of the rotating locking component of the control device for opening and closing oil circuits provided by the present invention;

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

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

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

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Drive shaft; 1a. Cylindrical protrusion; 2. End cap; 3. Valve body; 4. Pin; 5. Rotary locking element; 5a. Locking protrusion; 6. Locking block; 6a. Inclined surface; 6b. Second semi-circular groove; 6c. Third inclined protrusion; 6d. Fourth semi-circular groove; 6e. First semi-circular groove; 6f. Second inclined protrusion; 6g. Third semi-circular groove; 6h. Fourth inclined protrusion; 6k. First inclined protrusion; 7. Rubber sealing sleeve; 8. Actuating rod; 8a. Lubricating oil groove; 9. Spring; 10. Cylindrical channel; 11. Square channel; 12. Locking shaft; 13. Diamond groove; 14. Oil passage; 15. Lubricating oil passage. Detailed Implementation

[0027] 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] Example 1:

[0029] This embodiment provides a control device capable of switching on and off oil circuits, such as... Figure 1As shown. It mainly includes a valve body 3, within which an oil passage 14 and a control channel intersecting with the oil passage 14 are provided; a control mechanism is provided in the control channel, which is used to control the on / off state of the oil passage 14. The control channel consists of a cylindrical channel 10 and a square channel 11, with the square channel 11 located above the cylindrical channel 10. The control mechanism includes an actuator 8, vertically positioned within a cylindrical channel 10; a lubricating oil channel 15 communicating with an oil passage 14 is provided within the actuator 8; a locking block 6 is provided at the top of the actuator 8; a locking shaft 12 is provided at the top of the locking block 6; a locking cavity with a hollow top is provided within 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 within the locking cavity, and a cylindrical protrusion 1a is provided on the side wall of the transmission shaft 1 near the bottom, the cylindrical protrusion 1a contacting the inclined surface 6a; an end cap 2 is fitted over the locking shaft 12, and the transmission shaft 1 passes upward through the end cap 2, with a rotatable connection between the transmission shaft 1 and the end cap 2. Symmetrical diamond-shaped grooves 13 are provided on both sides of the locking block 6. The lowest end of the rhomboid groove 13 is provided with a first semi-circular groove 6e, and a first oblique protrusion 6k is provided above the first semi-circular groove 6e. The uppermost two sides of the rhomboid groove 13 are respectively provided with a second semi-circular groove 6b and a third semi-circular groove 6g, which are connected by a second oblique protrusion 6f. A fourth semi-circular groove 6d is provided in the center below the second oblique protrusion 6f, and a third oblique protrusion 6c and a fourth oblique protrusion 6h are respectively provided on both sides of the fourth semi-circular groove 6. Rotary locking elements 5 are provided on both sides of the locking block 6; the top of the rotary locking element 5 is rotatably connected to the end cover 2; a locking protrusion 5a is provided on the side wall of the rotary locking element 5 near the bottom; the locking protrusion 5a is located within the rhomboid groove 13. A spring 9 is sleeved on the outer surface of the upper end of the actuator 8; the top of the spring 9 is connected to the actuator 8, and the bottom end is connected to the bottom side wall of the square channel 11. The rotating locking member 5 is rotatably connected to the end cover 2 by a pin 4.

[0030] In the initial state, the locking protrusion 5a on the rotating locking member 5 is located in the first semi-circular groove 6e, the spring 9 is in a semi-compressed state, and the first semi-circular 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; thus realizing the conduction of the oil circuit 14; at this time, there is still a certain space reserved between the bottom of the actuator 8 and the bottom of the cylindrical channel 10, so that the actuator 8 can move downward until the lubricating oil channel 15 and the oil circuit 14 are completely separated. When it is necessary to close the oil passage 14, the drive shaft 1 is rotated. The cylindrical protrusion 1a on the drive shaft 1 initially contacts the lower part of the inclined surface 6a. As the drive shaft 1 is rotated, the cylindrical protrusion 1a moves along the inclined surface 6a to the higher part, which in turn presses down on the locking shaft 12. The locking shaft 12 drives the actuator 8 to move downward through the locking block 6, completely disengaging the lubricating oil passage 15 from the oil passage 14. During the downward movement of the locking shaft 12 and the locking block 6, the locking protrusion 5a first disengages from the first semi-circular groove 6e and moves upward. Under the limitation of the first inclined protrusion 6k, the locking protrusion 5a moves along the prismatic groove to the right half of the inclined groove to the fourth inclined protrusion 6h. Under its action, the locking protrusion 5a enters the third semi-circular groove 6g. Under the restriction of the top of the third semi-circular groove 6g, the locking block 6 cannot... As the drive shaft 1 continues to move downwards, it can no longer rotate. When the power on the drive shaft 1 is removed, the locking block 6 will be pushed upwards by the spring 9 by a small distance. At this time, the locking protrusion 5a will disengage from the third semi-circular groove 6g. Under the action of gravity, the locking protrusion 5a will shift to the left and come into contact with the second oblique protrusion 6f. The spring 9 will then push the locking block 6 upwards, forcing the locking protrusion 5a to move to the right under the action of the second oblique protrusion 6f. After encountering the left side of the fourth oblique protrusion 6h, it will enter the fourth semi-circular groove 6d. The second oblique protrusion 6f and the third oblique protrusion 6c will limit the locking protrusion 5a, making the locking protrusion 5a stable in the fourth semi-circular groove 6d. Under the abutment at the bottom of the fourth semi-circular groove 6d, the spring 9 will no longer be able to push the locking block 6, thereby fixing the position of the actuator 8 and closing the oil circuit 14.

[0031] When the oil passage 14 needs to be opened again, there is space at the top of the fourth semi-circular groove 6d, so the drive shaft 1 can continue to rotate, causing the locking block 6 to move downward a certain distance. The locking protrusion 5a contacts the second oblique protrusion 6f, and under the action of the second oblique protrusion 6f, it moves to the left and enters the second semi-circular groove 6b. Under the restriction of the top of the second semi-circular groove 6b, the locking block 6 cannot move downward, while there is space at the bottom of the second semi-circular groove 6b, where 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 semi-circular groove 6e and is fixed. At this time, the lubricating oil passage 15 is connected to the oil passage 14.

[0032] Example 2:

[0033] Unlike the above embodiments, this embodiment, based on the above embodiments, provides lubricating oil grooves 8a on the upper and lower sides of the lubricating oil channel 15 on the actuator 8. When the actuator 8 is brought to the designated 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 8, and at the same time, the high-pressure lubricating oil also flows into the other side through the lubricating oil grooves 8a on the actuator 8. When the oil circuit 14 is completely closed, the high-pressure lubricating oil fills the entire lubricating oil grooves 8a on the actuator 8 and is retained, reducing the back pressure and thus reducing the power when the oil circuit 14 is reopened.

[0034] Example 3:

[0035] Unlike the above embodiments, this embodiment, based on the above embodiments, provides a rubber sealing sleeve 7 on the surface of the actuator 8, and a spring 9 is sleeved on the outside of the rubber sealing sleeve 7; the rubber sealing sleeve 7 isolates the oil passage 14 from the outside, so that grease cannot leak to the outside through the gap between the actuator 8 and the valve body 3.

[0036] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A control device capable of switching on and off an oil circuit, characterized in that, Includes a valve body (3), which has an oil passage (14) and a control channel that intersects with the oil passage (14); the control channel is provided with a control mechanism, which is used to control the opening and closing of the oil passage (14); The control channel consists of a cylindrical channel (10) and a square channel (11), with the square channel (11) located above the cylindrical channel (10) and connected vertically. The control mechanism includes an actuator (8) with its bottom located inside a cylindrical channel (10); a lubricating oil channel (15) is provided inside the actuator (8) and extends laterally through the actuator (8); a locking block (6) is provided at the top of the actuator (8); a locking shaft (12) is provided at the top of the locking block (6); a locking cavity with a hollow top is provided inside 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 inside the locking cavity; 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 locking shaft (12); the transmission shaft (1) passes upward through the end cover (2), and the transmission shaft (1) and the end cover (2) are rotatably connected; The locking block (6) has symmetrical diamond-shaped grooves (13) on both sides. Rotary locking components (5) are provided on both sides of the locking block (6); the top of the rotary locking component (5) is rotatably connected to the end cover (2); a locking protrusion (5a) is provided on the side wall of the rotary locking component (5) near the bottom; the locking protrusion (5a) is located in the rhomboid groove (13).

2. The control device capable of switching on and off the oil circuit according to claim 1, characterized in that, The bottom end of the rhomboid groove (13) is provided with a first semi-circular groove (6e), and a first oblique protrusion (6k) is provided above the first semi-circular groove (6e). The top two sides of the rhomboid groove (13) are respectively provided with a second semi-circular groove (6b) and a third semi-circular groove (6g). The second semi-circular groove (6b) and the third semi-circular groove (6g) are connected by a second oblique protrusion (6f). The center below the second oblique protrusion (6f) is provided with a fourth semi-circular groove (6d). The sides of the fourth semi-circular groove (6d) are respectively provided with a third oblique protrusion (6c) and a fourth oblique protrusion (6h).

3. The control device capable of switching on and off the oil circuit according to claim 2, characterized in that, A spring (9) is fitted on the outer surface of the upper end of the actuator (8); the top end of the spring (9) is connected to the actuator (8), and the bottom end is connected to the bottom of the square channel (11).

4. The control device capable of switching on and off the oil circuit according to claim 3, characterized in that, The upper and lower sides of the lubricating oil channel (15) on the actuator (8) are respectively provided with lubricating oil grooves (8a).

5. The control device capable of switching on and off the oil circuit according to claim 4, characterized in that, The rotating locking member (5) is rotatably connected to the end cap (2) by a pin (4).

6. The control device capable of switching on and off the oil circuit according to claim 5, characterized in that, The surface of the actuator (8) is provided with a rubber sealing sleeve (7), and the spring (9) is sleeved on the outside of the rubber sealing sleeve (7).

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