Pilot overflow valve

Abstract

The utility model belongs to the technical field of pilot overflow valves, and particularly relates to a pilot overflow valve which comprises a mounting base. An overflow valve body is arranged at the top of the mounting base; a plurality of groups of spring columns are rotationally connected to the inner side of the mounting base; the outer side wall of the spring column is fixedly connected with a first transmission gear ring; the first transmission gear ring is arranged on the inner side of the mounting base; a threaded column is connected to the inner side of the first transmission gear ring in an up-down sliding mode. During working, the rotating first transmission gear ring can continuously push the threaded column to enter the inner side of the threaded hole, and in the rotating process of the threaded column, the threaded column and the threaded hole can be mounted, namely, the mounting work of the overflow valve body can be completed; according to the whole device, the situation that workers need to use external auxiliary tools to complete the installation work of the overflow valve body is reduced, and the simplicity and the working efficiency are improved when the workers install the overflow valve body on the hydraulic system.

Description

Technical Field

[0001] This utility model belongs to the field of pilot relief valve technology, specifically a pilot relief valve. Background Technology

[0002] The pilot relief valve is an important component in a hydraulic system. By using the pilot relief valve, excess oil can be returned to the oil tank, and it can also be used as a safety valve. Through relief operation, it can reduce the occurrence of system overload.

[0003] In the current technology, pilot relief valves are often composed of a mounting base and a relief valve body. The relief valve can be installed in the hydraulic system through the mounting base and connected to the hydraulic components to perform normal relief work.

[0004] Existing pilot relief valves inevitably experience oil and other impurities entering the damping orifice during prolonged operation, leading to blockages or even malfunction. In such cases, workers need to use auxiliary tools to replace them, reducing work efficiency. Therefore, a new pilot relief valve is proposed to address these issues. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, this utility model proposes a pilot relief valve.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A pilot overflow valve of this utility model includes a mounting base; an overflow valve body is provided on the top of the mounting base; multiple sets of spring columns are rotatably connected to the inner side of the mounting base; a first transmission gear ring is fixedly connected to the outer wall of the spring column; the first transmission gear ring is disposed inside the mounting base; a threaded column is slidably connected up and down to the inner side of the first transmission gear ring; multiple sets of first gear columns are rotatably connected to the inner side of the mounting base; both ends of the first gear column are respectively engaged with a pair of first transmission gear rings; a second transmission gear ring is fixedly connected to the outer side of one side of the first gear column; a second gear column is rotatably connected to the side of the mounting base near the first gear column; the second gear column and the second transmission gear ring are engaged with each other; a connecting plate is fixedly connected to the end of the second gear column away from the mounting base.

[0007] Preferably, a first tooth is fixedly connected to the outer wall of the second tooth post; multiple sets of the first tooth are fixedly connected to the outer wall of the second tooth post; a fixing ring is fixedly connected to the side wall of the mounting base; the fixing ring is sleeved on the outer side of the second tooth post; multiple sets of expansion grooves are opened on the side wall of the fixing ring; a rotating shaft is rotatably connected to the inner side of the expansion groove; a second tooth is fixedly connected to the outer wall of the rotating shaft; an elastic connecting plate is fixedly connected to the outer wall of the second tooth; the elastic connecting plate is interconnected with the inner side wall of the expansion groove.

[0008] Preferably, the bottom of the threaded column is provided with a groove; a connecting spring is fixedly connected to the top of the inner side of the groove; a limiting post is slidably connected to the inner side of the groove; the limiting post and the connecting spring are connected to each other.

[0009] Preferably, a rotating base is fixedly connected to the bottom of the limiting post; a rotating ball is rotatably connected to the inner side of the rotating base.

[0010] Preferably, a scale plate is fixedly connected to the top of the spring column; multiple sets of scale plates are fixedly connected to the top of the spring column; and a pointer is provided on the top of the mounting base.

[0011] Preferably, a pair of fixing plates are fixed to the side wall of the mounting base near the second tooth post; a closing sleeve is fixed to the side wall of the pair of fixing plates near each other; the closing sleeve is sleeved on the outside of the second tooth post.

[0012] Preferably, a sealing ring is fixedly connected to the inner side of the closed sleeve; the inner wall of the sealing ring is in contact with the outer wall of the second toothed column.

[0013] The beneficial effects of this utility model are:

[0014] 1. This utility model provides a pilot relief valve. The rotating first transmission gear ring can also continuously push the threaded column into the inner side of the threaded hole. During the rotation of the threaded column, the installation work of the threaded column and the threaded hole can be realized, thus completing the installation work of the relief valve body. The overall device reduces the need for workers to use external auxiliary tools to complete the installation work of the relief valve body. The overall device improves the ease and efficiency of workers when installing the relief valve body in the hydraulic system.

[0015] 2. This utility model provides a pilot overflow valve. The first tooth can press the second tooth into the inner side of the expansion groove through the elastic connecting plate, and the second tooth can rotate normally. When the overflow valve body is hit, if the second tooth rotates clockwise, the rotating shaft, the second tooth and the elastic connecting plate cooperate with each other. The elastic connecting plate can support the first tooth and fix the second tooth. The overall device improves the working stability after the threaded column is installed inside the threaded hole. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0017] Figure 1 This is a perspective view of the mounting base of this utility model;

[0018] Figure 2 This is a perspective view of the spring column in this utility model;

[0019] Figure 3 This is a perspective view of the threaded column in this utility model;

[0020] Figure 4 This is a perspective view of the connecting disc in this utility model;

[0021] Figure 5 yes Figure 4 Enlarged view of point A.

[0022] Legend:

[0023] 1. Mounting base; 11. Overflow valve body; 12. Spring post; 13. First transmission gear ring; 14. Threaded post; 15. First gear post; 16. Second transmission gear ring; 17. Second gear post; 18. Connecting plate; 2. First tooth; 21. Fixing ring; 22. Expansion groove; 23. Rotating shaft; 24. Second tooth; 25. Elastic connecting plate; 3. Slide groove; 31. Connecting spring; 32. Limiting post; 4. Rotary seat; 41. Rotating ball; 5. Scale plate; 51. Pointer; 6. Fixing plate; 61. Sealing sleeve post; 7. Sealing ring. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] Specific implementation examples are given below.

[0026] Please see Figures 1-5This utility model provides a pilot overflow valve, including a mounting base 1; an overflow valve body 11 is provided on the top of the mounting base 1; multiple sets of spring columns 12 are rotatably connected to the inner side of the mounting base 1; a first transmission gear ring 13 is fixedly connected to the outer wall of the spring column 12; the first transmission gear ring 13 is disposed inside the mounting base 1; a threaded column 14 is slidably connected to the inner side of the first transmission gear ring 13; multiple sets of first gear columns 15 are rotatably connected to the inner side of the mounting base 1; both ends of the first gear column 15 are respectively engaged with a pair of first transmission gear rings 13; a second transmission gear ring 16 is fixedly connected to the outer side of one of the first gear columns 15; a second gear column 17 is rotatably connected to the side of the mounting base 1 near the first gear column 15; the second gear column 17 is engaged with the second transmission gear ring 16; a connecting plate 1 is fixedly connected to the end of the second gear column 17 away from the mounting base 1. 8. During operation, when the relief valve body 11 needs to be installed in a fixed position, the mounting base 1 is moved to the installation position. The first transmission gear ring 13 pushes the threaded column 14 into the threaded hole. The operator rotates the connecting plate 18. The connecting plate 18 cooperates with the first gear ring 15 through the second gear ring 17 and the second transmission gear ring 16, which can synchronously drive multiple sets of first transmission gear rings 13 to rotate. The rotating first transmission gear rings 13 can also continuously push the threaded column 14 into the inner side of the threaded hole. During the rotation of the threaded column 14, the installation work of the threaded column 14 and the threaded hole can be realized, thus completing the installation work of the relief valve body 11. The overall device reduces the need for operators to use external auxiliary tools to complete the installation work of the relief valve body 11. The overall device improves the ease and efficiency of operators when installing the relief valve body 11 in the hydraulic system.

[0027] Furthermore, such as Figure 5As shown, a first tooth 2 is fixedly connected to the outer wall of the second tooth post 17; multiple sets of the first tooth 2 are fixedly connected to the outer wall of the second tooth post 17; a fixing ring 21 is fixedly connected to the side wall of the mounting base 1; the fixing ring 21 is sleeved on the outside of the second tooth post 17; multiple sets of expansion grooves 22 are opened on the side wall of the fixing ring 21; a rotating shaft 23 is rotatably connected to the inner side of the expansion groove 22; a second tooth 24 is fixedly connected to the outer wall of the rotating shaft 23; an elastic connecting plate 25 is fixedly connected to the outer wall of the second tooth 24; the elastic connecting plate 25 is interconnected with the inner side wall of the expansion groove 22; during operation, multiple sets of elastic connecting plates... The connecting plate 25 pushes the second tooth 24 to rotate through the rotating shaft 23, and during the counterclockwise rotation of the second tooth 17, the first tooth 2 can squeeze the second tooth 24 into the inner side of the expansion groove 22 through the elastic connecting plate 25, and the second tooth 17 can rotate normally; when the overflow valve body 11 is hit, if the second tooth 17 rotates clockwise, the rotating shaft 23, the second tooth 24 and the elastic connecting plate 25 cooperate with each other, and the elastic connecting plate 25 can support the first tooth 2, so that the second tooth 17 is fixed; the overall device improves the working stability of the threaded column 14 after it is installed inside the threaded hole.

[0028] Furthermore, such as Figure 4 As shown, the bottom of the threaded post 14 is provided with a sliding groove 3; a connecting spring 31 is fixedly connected to the top of the inner side of the sliding groove 3; a limiting post 32 is slidably connected to the inner side of the sliding groove 3; the limiting post 32 and the connecting spring 31 are connected to each other; during operation, when the mounting base 1 moves to the mounting threaded hole, the connecting spring 31 can push the limiting post 32 to move inside the sliding groove 3, so that the limiting post 32 enters the inner side of the threaded hole, thereby completing the positioning work of the mounting base 1; the overall device improves the ease of installing the overflow valve body 11.

[0029] Furthermore, such as Figure 4 As shown, a rotating base 4 is fixedly connected to the bottom of the limiting post 32; a rotating ball 41 is rotatably connected to the inner side of the rotating base 4; during operation, the rotating base 4 and the rotating ball 41 cooperate with each other. When the mounting base 1 moves to the mounting threaded hole, the rotating ball 41 rotates accordingly. The rotating ball 41 can effectively reduce the friction at the bottom of the limiting post 32, thus preventing wear.

[0030] Furthermore, such as Figure 1 As shown, a scale plate 5 is fixedly connected to the top of the spring column 12; multiple sets of scale plates 5 are fixedly connected to the top of the spring column 12; a pointer 51 is provided on the top of the mounting base 1; during operation, the scale plate 5 and the pointer 51 cooperate with each other, and after the spring column 12 completes the installation of the threaded column 14, the pointer 51 and the scale plate 5 cooperate with each other to indicate the position of the scale plate 5 and the pointer 51 after installation to the staff. The staff can directly observe the scale plate 5 and the pointer 51 and can directly observe the rotation angle of the threaded column 14.

[0031] Furthermore, such as Figure 1 As shown, a pair of fixing plates 6 are fixedly connected to the side wall of the mounting base 1 near the second toothed column 17; a closing sleeve 61 is fixedly connected to the side wall of the pair of fixing plates 6 close to each other; the closing sleeve 61 is sleeved on the outside of the second toothed column 17; during operation, the fixing plates 6 and the closing sleeve 61 cooperate with each other to block external impurities, thereby reducing the occurrence of external impurities directly entering the inner side of the fixing ring 21 and improving the stability of the overall device during long-term operation.

[0032] Furthermore, such as Figure 5 As shown, a sealing ring 7 is fixedly connected to the inner side of the closed sleeve 61; the inner wall of the sealing ring 7 is in contact with the outer wall of the second toothed column 17; during operation, the sealing ring 7 can block external impurities, thereby reducing the occurrence of external impurities entering the inner side of the expansion groove 22 through the inner side of the closed sleeve 61.

[0033] Working principle: During operation, when the overflow valve body 11 needs to be installed in a fixed position, the mounting base 1 is moved to the installation position. The first transmission gear ring 13 pushes the threaded column 14 into the threaded hole. The operator rotates the connecting plate 18. The connecting plate 18, through the second gear ring 17 and the second transmission gear ring 16, cooperates with the first gear ring 15 to synchronously drive multiple sets of first transmission gear rings 13 to rotate. The rotating first transmission gear rings 13 can also continuously push the threaded column 14 into the inner side of the threaded hole. During the rotation of the threaded column 14, the installation work of the threaded column 14 and the threaded hole can be realized, thus completing the installation work of the overflow valve body 11. The overall device reduces the need for external assistance from the operator. The tool has just completed the installation of the relief valve body 11. The overall device improves the ease and efficiency of the operator when installing the relief valve body 11 in the hydraulic system. During operation, multiple sets of elastic connecting plates 25 push the second tooth 24 to rotate through the rotating shaft 23. During the counterclockwise rotation of the second tooth column 17, the first tooth 2 can squeeze the second tooth 24 into the inner side of the expansion groove 22 through the elastic connecting plates 25, and the second tooth column 17 can rotate normally. When the relief valve body 11 is hit, if the second tooth column 17 rotates clockwise, the rotating shaft 23, the second tooth 24 and the elastic connecting plate 25 cooperate with each other. The elastic connecting plate 25 can support the first tooth 2, so that the second tooth 24 can rotate clockwise. The toothed column 17 is fixed; the overall device improves the working stability of the threaded column 14 after it is installed inside the threaded hole; during operation, when the mounting base 1 moves to the mounting threaded hole, the connecting spring 31 can push the limiting column 32 to move inside the slide groove 3, so that the limiting column 32 enters the inside of the threaded hole, thus completing the positioning of the mounting base 1; the overall device improves the ease of installing the overflow valve body 11; during operation, the rotating seat 4 and the rotating ball 41 cooperate with each other. When the mounting base 1 moves to the mounting threaded hole, the rotating ball 41 rotates accordingly. The rotating ball 41 can effectively reduce the friction at the bottom of the limiting column 32, thus preventing wear; during operation, the scale plate 5 and the pointer 51 cooperate with each other, and the spring After the threaded post 14 is installed, the pointer 51 and the scale plate 5 work together to indicate the position of the scale plate 5 and pointer 51 after installation. The operator can directly observe the rotation angle of the threaded post 14 by observing the scale plate 5 and pointer 51. During operation, the fixed plate 6 and the closed sleeve post 61 work together to block external impurities, thereby reducing the occurrence of external impurities directly entering the inner side of the fixed ring 21 and improving the stability of the overall device during long-term operation. During operation, the sealing ring 7 can block external impurities, thereby reducing the occurrence of external impurities entering the inner side of the expansion groove 22 through the inner side of the closed sleeve post 61.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A pilot relief valve comprising a mounting base (1); characterized in that: An overflow valve body (11) is provided on the top of the mounting base (1); multiple sets of spring columns (12) are rotatably connected to the inner side of the mounting base (1); a first transmission gear ring (13) is fixedly connected to the outer wall of the spring column (12); the first transmission gear ring (13) is located inside the mounting base (1); a threaded column (14) is slidably connected to the inner side of the first transmission gear ring (13); multiple sets of first gear columns (15) are rotatably connected to the inner side of the mounting base (1); the two ends of the first gear column (15) are respectively meshed with a pair of first transmission gear rings (13); a second transmission gear ring (16) is fixedly connected to the outer side of one side of the first gear column (15); a second gear column (17) is rotatably connected to the side of the mounting base (1) near the first gear column (15); the second gear column (17) meshes with the second transmission gear ring (16); a connecting plate (18) is fixedly connected to the end of the second gear column (17) away from the mounting base (1).

2. A pilot relief valve as in claim 1, wherein: The second tooth (17) is fixedly connected to the outer wall of the second tooth (17); the first tooth (2) is fixedly connected to multiple sets on the outer wall of the second tooth (17); the mounting base (1) is fixedly connected to the side wall of the mounting base (1); the fixing ring (21) is sleeved on the outside of the second tooth (17); the side wall of the fixing ring (21) is provided with multiple sets of expansion grooves (22); the inner side of the expansion groove (22) is rotatably connected to the rotating shaft (23); the outer wall of the rotating shaft (23) is fixedly connected to the second tooth (24); the outer wall of the second tooth (24) is fixedly connected to the elastic connecting plate (25); the elastic connecting plate (25) is connected to the inner wall of the expansion groove (22).

3. A pilot relief valve as in claim 1, wherein: The bottom of the threaded column (14) is provided with a groove (3); a connecting spring (31) is fixedly connected to the top of the inner side of the groove (3); a limiting column (32) is slidably connected to the inner side of the groove (3); the limiting column (32) and the connecting spring (31) are connected to each other.

4. A pilot relief valve as claimed in claim 3, characterized in that: The bottom of the limiting post (32) is fixedly connected to a rotating seat (4); a rotating ball (41) is rotatably connected to the inner side of the rotating seat (4).

5. A pilot relief valve as in claim 1, wherein: A scale plate (5) is fixedly attached to the top of the spring column (12); multiple sets of scale plates (5) are fixedly attached to the top of the spring column (12); a pointer (51) is provided on the top of the mounting base (1).

6. A pilot relief valve as in claim 1, wherein: The mounting base (1) has a pair of fixing plates (6) fixed to one side wall near the second tooth post (17); the pair of fixing plates (6) have a closing sleeve post (61) fixed to one side wall near each other; the closing sleeve post (61) is sleeved on the outside of the second tooth post (17).

7. A pilot relief valve as claimed in claim 6, characterised in that: A sealing ring (7) is fixedly connected to the inner side of the closed sleeve (61); the inner wall of the sealing ring (7) is in contact with the outer wall of the second toothed column (17).

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