A pressure relief oil cup

Abstract

This invention relates to the field of agricultural machinery technology, and more particularly to a pressure relief oil cup for a gearbox, comprising a cup body and a cup cover. The cup body has an oil storage chamber, an upper opening, and a pressure relief oil hole. An airflow channel connecting the oil storage chamber to the outside is provided between the cup cover and the cup body. A threaded section is externally connected to the pressure relief oil hole. The beneficial effects of this invention are: this solution adds a pressure relief oil cup to the original pressure relief hole of the gearbox. The oil cup itself has a certain oil storage space and increases the cooling area. When oil enters the oil cup, the pressure inside the gearbox is released, and the oil can return to the gearbox after cooling. This not only prevents oil loss due to hydraulic leakage, which helps to keep the gearbox in a smaller size, but also avoids abnormal gear wear caused by insufficient gearbox lubrication.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery, and in particular to a pressure relief oil cup on a gearbox. Background Art

[0002] The gearbox generates a lot of heat during operation, the oil temperature rises, and the pressure increases. In order to maintain the stability of the system, it is necessary to release the pressure through the hydraulic hole. At present, the pressure relief bolt is often used for pressure relief on the market. The head of this bolt is provided with a small hole as a pressure relief channel, and the outside is sealed by an oil seal or sealant. The pressure relief hole of the pressure relief bolt is tightly closed by the sealing structure to ensure that the oil is prevented from leaking when the system is operating normally. When the internal pressure of the system exceeds the set value, the sealing structure will deform or rupture due to the pressure, causing the pressure relief channel to open. At this time, the high-pressure oil inside the system is quickly released to the external environment through the pressure relief channel, thereby reducing the pressure inside the system, helping to maintain the stability of the gearbox hydraulic system, and ensuring the normal operation of the gearbox. Due to the small pressure relief channel, the oil is often sprayed to the outside. On the one hand, the leaked oil will contaminate other equipment, and it will also cause oil loss, resulting in gear wear in the gearbox; on the other hand, the above oil leakage risks can be reduced by increasing the gearbox space. However, this approach will lead to a significant increase in manufacturing costs and cannot fundamentally solve the oil leakage problem. Summary of the invention

[0003] In order to solve the problems in the prior art of the gearbox hydraulic hole pressure relief solution that the effect is weakened after long-term use and the increase in the volume of the gearbox leads to increased costs, the present invention provides a pressure relief oil cup, which has the characteristics of good pressure relief stability, not easy to leak oil, and is conducive to controlling the gearbox to a smaller volume.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] A pressure relief oil cup comprises a cup body and a cup cover, wherein the cup body is provided with an oil storage chamber, the upper part of the cup body is provided with a cup mouth and the lower part of the cup body is provided with a pressure relief oil hole, an air flow channel connecting the oil storage chamber with the outside is provided between the cup cover and the cup body, and the outside of the pressure relief oil hole is connected with a threaded section.

[0006] Furthermore, blocks are provided at intervals on the outer edge of the cup mouth; a slot matching the block is provided on the inner edge of the cup cover, a buckle is provided in the slot, and the cup cover is buckled onto the cup mouth; pads are provided at intervals on the inner top surface of the cup cover, and a ventilation notch is provided on the inner side of the cup cover corresponding to the gap between the pads.

[0007] Furthermore, a filter material is placed in the oil storage chamber.

[0008] Furthermore, a support plate is provided around the edge of the pressure relief oil hole in the oil storage chamber, and the filter material is placed on the top of the support plate.

[0009] Furthermore, support columns are provided around the inner wall of the oil storage chamber.

[0010] Furthermore, a sealing ring is provided on the outer side of the threaded section.

[0011] The beneficial effects of the present invention are as follows: the present invention adds a pressure relief oil cup to the original pressure relief hole of the gearbox, the oil cup itself has a certain oil storage space, and the cooling area is increased, when the oil enters the oil cup, the pressure in the gearbox body is released, and the oil can return to the gearbox after cooling, which can not only prevent the loss of oil caused by leakage of the hydraulic hole, but also help to control the gearbox to a smaller volume, and can also avoid abnormal wear of gears caused by lack of oil in the gearbox. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A schematic diagram of the structure of the pressure relief oil cup of the present invention;

[0013] Figure 2 for Figure 1 A cross-sectional view of

[0014] Figure 3 It is a structural schematic diagram of the cup body in the present invention;

[0015] Figure 4 It is a schematic diagram of the structure of the cup cover in the present invention;

[0016] Figure 5 is a cross-sectional view of the cup cover;

[0017] In the figure: 1. cup body; 2. cup cover; 3. oil storage chamber; 4. cup mouth; 5. pressure relief oil hole; 6. threaded section; 7. clamping block; 8. clamping groove; 9. buckle; 10. pad; 11. air permeable gap; 12. filter material; 13. support plate; 14. support column; 15. sealing ring. DETAILED DESCRIPTION

[0018] The following is a detailed description of a pressure relief oil cup of the present invention in conjunction with specific embodiments.

[0019] A pressure relief oil cup, such as Figure 1 , Figure 2 , Figure 3 As shown, it includes a cup body 1 and a cup cover 2, an oil storage chamber 3 is provided in the cup body 1, a cup mouth 4 is provided at the upper part of the cup body 1 and a pressure relief oil hole 5 is provided at the lower part, an air flow channel connecting the oil storage chamber 3 with the outside is provided between the cup cover 2 and the cup body 1, and the pressure relief oil hole 5 is externally connected to a threaded section 6.

[0020] The pressure relief threaded hole is generally located at the top of the gearbox, and the pressure relief oil cup is installed with the pressure relief oil hole facing downward when in use. The threaded section 6 precisely matches the pressure relief threaded hole of the gearbox, and the cup body 1 is installed in the threaded hole using the threaded section 6. When the system is running, as the temperature and pressure inside the gearbox increase, the hydraulic oil in the gearbox enters the oil cup through the pressure relief threaded hole. When the oil enters the oil cup, the pressure in the gearbox is released. The cooling surface area of ​​the oil in the oil cup is expanded, and after effective cooling, the oil flows back to the gearbox. This process not only prevents the loss of oil due to leakage of the hydraulic hole, but also avoids abnormal wear of the gears of the gearbox due to insufficient hydraulic oil. Compared with the prior art, the cost increase caused by increasing unnecessary oil storage space in the gearbox design is avoided, and the gearbox can also be controlled to a smaller volume as much as possible, with the characteristics of simple structure, low cost and easy installation.

[0021] The cup cover 2 can be snapped onto the cup body 1 or can be threaded. The airflow channel between the cup cover 2 and the cup body 1 is used to connect the oil storage chamber 3 with the external atmosphere to prevent positive pressure from forming inside the oil cup, so that the high-pressure medium in the gearbox can smoothly enter the oil storage chamber 3. In other embodiments, the airflow channel can also be an air hole on the cup cover 2.

[0022] like Figure 4 As shown, blocks 7 are provided at intervals on the outer edge of the cup mouth 4; a slot 8 matching the block 7 is provided at the inner edge of the cup cover 2, a buckle 9 is provided in the slot 8, and the cup cover 2 is buckled on the cup mouth 4; pads 10 are provided at intervals on the inner top surface of the cup cover 2, and a ventilating notch 11 is provided on the inner side of the cup cover 2 corresponding to the gap between the pads 10.

[0023] In this embodiment, the buckle 9 has a wedge-shaped structure. When installing, the block 7 of the cup mouth 4 is aligned with the slot 8 on the cup cover 2, and then pressed to make the block 7 snap into the slot 8 and be buckled and fixed by the buckle 9. The top of the cup mouth 4 abuts against the cushion block, so that the gap between the inner top surface of the cup cover 2 and the cushion plate 10 and the air-permeable notch 11 on the inner side of the cup cover 2 form an air flow channel connecting the oil storage chamber 3 with the outside, so that the high-pressure oil in the hydraulic box can enter the oil storage chamber 3.

[0024] like Figure 2 As shown, a filter material 12 is placed in the oil storage chamber 3. The filter material 12 is a sponge, which is used to prevent dust and debris in the external air from entering the oil storage chamber 3, thereby ensuring the cleanliness of the hydraulic oil.

[0025] like Figure 2 , Figure 3As shown, a support plate 13 is provided around the edge of the pressure relief oil hole 5 in the oil storage chamber 3, and the filter material 12 is placed on the top of the support plate 13. In this embodiment, the support plate 13 plays a role in supporting the filter material 12. The support plate 13 is an arc-shaped plate, and three support plates 13 are provided at intervals. The gaps between the support plates 13 facilitate the hydraulic oil to pass through and enter the oil storage chamber 3. A support column 14 is also provided around the inner wall of the oil storage chamber 3 to support the edge position of the filter material 12.

[0026] A sealing ring 15 is provided on the outer side of the threaded section 6 to improve the sealing effect between the threaded section 6 and the gearbox pressure relief threaded hole.

Claims

1. A pressure relief oil cup, characterized in that: The invention comprises a cup body (1) and a cup cover (2), wherein an oil storage chamber (3) is provided in the cup body (1), a cup mouth (4) is provided at the top of the cup body (1) and a pressure relief oil hole (5) is provided at the bottom, an air flow channel connecting the oil storage chamber (3) and the outside is provided between the cup cover (2) and the cup body (1), and the outside of the pressure relief oil hole (5) is connected to a threaded section (6).

2. The pressure relief oil cup according to claim 1, characterized in that: The outer edge of the cup mouth (4) is provided with a clamping block (7) at intervals; the inner edge of the cup cover (2) is provided with a clamping groove (8) matching the clamping block (7), a buckle (9) is provided in the clamping groove (8), and the cup cover (2) is buckled on the cup mouth (4); the inner top surface of the cup cover (2) is provided with a pad (10) at intervals in the circumferential direction, and the inner side edge of the cup cover (2) corresponding to the gap between the pad (10) is provided with a ventilation notch (11).

3. The pressure relief oil cup as claimed in claim 1 or 2, characterized in that: A filter material (12) is placed in the oil storage chamber (3).

4. The pressure relief oil cup as claimed in claim 3, characterized in that: A support plate (13) is provided around the edge of the pressure relief oil hole (5) in the oil storage chamber (3), and the filter material (12) is placed on the top of the support plate (13).

5. The pressure relief oil cup according to claim 1, 2 or 4, characterized in that: A support column (14) is provided on the circumference of the inner wall of the oil storage chamber (3).

6. The pressure relief oil cup as claimed in claim 3, characterized in that: A support column (14) is provided on the circumference of the inner wall of the oil storage chamber (3).

7. The pressure relief oil cup according to claim 1, 2, 4 or 6, characterized in that: A sealing ring (15) is arranged on the outside of the threaded section (6).

8. The pressure relief oil cup as claimed in claim 3, characterized in that: A sealing ring (15) is arranged on the outside of the threaded section (6).

9. The pressure relief oil cup as claimed in claim 5, characterized in that: A sealing ring (15) is arranged on the outside of the threaded section (6).

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