A high-speed train air cylinder with stepped sealing groove

Abstract

The utility model relates to high -speed train motor car air cylinder technical field, the cylinder cover covers sets up on the upper end of cylinder body, the sealing ring groove is integrally formed and sets up on the port end wall of cylinder body, the settling groove is opened in the bottom of sealing ring groove, and the cross section width of settling groove is less than the cross section width of sealing ring groove setting, the lifting seat is closed annular structure setting, and the lifting seat sets up in the settling groove, the inside and outside two side walls of lifting seat are located on the two side walls of settling groove, the gasket is closed annular structure setting, and the gasket sets up in the settling groove, and the gasket sets up in the side direction sealing ring groove of lifting seat, it forms the protection to sealing ring in the sealing process through the design ladder -like sealing groove structure, prevents the damage to sealing ring caused by equipment vibration, and the auxiliary smearing sealing oil liquid can also enhance the sealing strength of structure, guarantees the stable work of air cylinder.

Description

Technical Field

[0001] This utility model relates to the field of air cylinder technology for high-speed train sets, specifically to an air cylinder for high-speed trains with a stepped sealing groove. Background Technology

[0002] The air cylinder in a high-speed train is a device used for storing and supplying pressurized air in the pneumatic system of a high-speed train. It stores high-pressure air and works with the system to supply air to brakes, pneumatic doors, etc. Therefore, the air cylinder needs to maintain a high-pressure working environment for a long time. In order to ensure the normal and stable operation of the pneumatic system, it is also necessary to ensure the stable sealing of the air cylinder. For the sealing of the pressure storage device, in order to ensure the design service life of the sealing ring and avoid air leakage and pressure loss caused by vibration of the equipment working environment during use, the sealing structure of the air cylinder connection needs to be reinforced. Utility Model Content

[0003] The purpose of this utility model is to address the defects and deficiencies of the existing technology by providing a high-speed train air cylinder with a stepped sealing groove. By designing a stepped sealing groove structure and a structure that can be coated with auxiliary sealing oil, the air cylinder protects the sealing ring during the sealing process, preventing damage to the sealing ring caused by equipment vibration. Furthermore, the auxiliary application of sealing oil can enhance the sealing strength of the structure and ensure the stable operation of the air cylinder.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] It includes a cylinder block and a cylinder head, wherein the upper end of the cylinder block is open, and the cylinder head covers the upper port of the cylinder block. It also includes:

[0006] A sealing ring groove is integrally formed and disposed on the end wall of the cylinder body, and the cylinder head is covered and disposed on the sealing ring groove.

[0007] A settling tank is provided at the bottom of the sealing ring groove, and the cross-sectional width of the settling tank is smaller than the cross-sectional width of the sealing ring groove.

[0008] The lifting seat is a closed ring structure and is installed inside the settling tank. The inner and outer side walls of the lifting seat abut against the inner side walls of the settling tank.

[0009] The gasket is a closed ring structure and is disposed in the settling groove. The gasket is disposed on the side of the lifting seat facing the sealing ring groove.

[0010] Preferably, a support ring is provided inside the settling tank, with one side of the support ring abutting against the lifting seat and the other side of the support ring abutting against the gasket.

[0011] Preferably, the settling tank is provided with an installation seat, which is a closed ring structure and is located between the lifting seat and the gasket. Several fins are fixedly arranged at equal angles on the side wall of the installation seat facing the gasket, and several guide holes are opened at equal angles on the gasket.

[0012] Preferably, a counterweight is fixedly provided on the mounting base, and the counterweight is sandwiched between the inner ring wall of the settling tank and the inner ring wall of the support ring, and the axis of the guide hole is set at a certain angle to the axis of the gasket.

[0013] Preferably, a guide groove is provided on the inner wall of the cylinder, and the guide groove is connected to the interior of the settling groove. A pin is fixedly provided on the inner ring wall of the lifting seat, and the pin is movably inserted in the guide groove.

[0014] Preferably, a support sleeve is provided inside the cylinder body, and the support sleeve is spun to the cylinder body through a bearing. A support groove is provided on the support sleeve, and the support groove and the guide groove are set at a certain inclined angle. The pin is movably inserted in the support groove.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This design employs a trapezoidal groove structure formed by a sealing ring groove and a settling groove, with a lifting seat installed within it. A gasket is then placed under the support of a support ring. A rotatable mounting base is installed within the settling groove, with a counterweight and fins on the mounting base. This allows for efficient sealing by injecting sealing oil, which, through kinetic energy conversion, coats the sealing ring as the equipment moves. This makes the air cylinder suitable for high-pressure environments and environments with frequent internal pressure changes. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a structural schematic diagram of the cylinder body and support sleeve in this utility model.

[0019] Figure 3 This is a schematic diagram of the cylinder body and sealing ring groove in this utility model.

[0020] Figure 4 This is a structural schematic diagram of the lifting seat, support ring, and gasket in this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Cylinder block; 2. Cylinder head; 3. Sealing ring groove; 4. Settling groove; 5. Lifting seat; 6. Gasket; 7. Support ring; 8. Mounting seat; 9. Fin; 10. Guide hole; 11. Counterweight seat; 12. Guide groove; 13. Pin; 14. Support sleeve; 15. Support groove. Detailed Implementation

[0023] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] like Figures 1-4 As shown, the specific implementation adopts the following technical solution:

[0025] This specific embodiment includes a cylinder body 1, a cylinder head 2, a lifting seat 5, and a gasket 6. The cylinder head 2 covers the upper port of the cylinder body 1. A sealing ring groove 3 is formed on the end wall of the upper port of the cylinder body 1. The sealing ring groove 3 has a rectangular cross-section. A settling groove 4 is formed at the bottom of the sealing ring groove 3. The settling groove 4 has a rectangular cross-section, and its width is smaller than that of the sealing ring groove 3. Thus, the settling groove 4 and the sealing ring groove 3 form an inverted "convex" structure, that is, the sealing ring groove 3 and the settling groove 4 form a stepped sealing groove on the cylinder body 1. During installation, the sealing ring is placed in the sealing groove. The lifting seat 5 is set in the settling groove 4. The lifting seat 5 has a closed ring structure. A gasket 6 is set on the side of the lifting seat 5 facing the cylinder head 2. The gasket 6 is set in the settling groove 4. The gasket 6 has a closed ring structure and several guide holes 10 are distributed at equal angles on the gasket 6. The axis of the flow hole 10 is set at a certain angle to the axis of the gasket 6. A support ring 7 is sandwiched between the gasket 6 and the lifting seat 5, and the outer wall of the support ring 7 abuts against the inner wall of the outer side of the settling tank 4. The two sides of the support ring 7 abut against the lifting seats 5 and the gasket 6 on both sides, respectively. A mounting seat 8 is set in the settling tank 4 on one side of the inner ring of the support ring 7. Several fins 9 are fixedly arranged at equal angles on the side wall of the mounting seat 8 facing the gasket 6. A counterweight seat 11 is fixedly installed; several guide grooves 12 are opened on the inner wall of the cylinder body 1, and the guide grooves 12 are connected to the interior of the settling tank 4; a pin 13 is fixedly installed on the inner ring wall of the lifting seat 5, and the pin 13 is movably inserted in the guide groove 12; a support sleeve 14 is screwed into the cylinder body 1 through a bearing, and a support groove 15 is opened on the support sleeve 14, and the support groove 15 is set at an angle with the guide groove 12; the pin 13 is movably inserted in the support groove 15.

[0026] When using this device, rotate the support sleeve 14, thereby lowering the pin 13 to the bottom of the guide groove 12 through the cooperation of the guide groove 12 and the support groove 15. This pin 13 then drives the lifting seat 5, causing it to descend to the bottom of the settling tank 4. Next, place the support ring 7 and the mounting seat 8 into the settling tank 4, ensuring that the fins 9 on the mounting seat 8 face the sealing ring groove 3. Then, inject sealing oil into the settling tank 4 and the sealing ring groove 3. After injection, place the gasket 6 into the settling tank 4, with the support ring 7 pressing against it. Then, place the sealing ring into the sealing ring groove 3 and close the cylinder cover 2, completing the assembly of the air cylinder. In daily use, as the air cylinder follows the movement of the external device, the inertial kinetic energy of the counterweight 11 drives the mounting seat 8 to rotate, thereby causing the mounting seat 8 to rotate the fins 9. The fins 9 push the sealing oil in the settling tank 4 and discharge it through the guide hole 10. This ensures that the sealing oil maintains frequent contact with the sealing ring, thereby filling the gaps in the sealing connection of the equipment and achieving a seal for the air cylinder in conjunction with the sealing ring. During prolonged use, the sealing oil may oxidize and fail. When replacing the sealing ring or cleaning and preparing the cylinder body 1, the cylinder cover 2 is removed. Then, the support sleeve 14 is rotated, pushing the pin 13 through the support groove 15. The pin 13 slides within the guide groove 12, thereby lifting the lifting seat 5 towards one side of the sealing ring groove 3. The lifting seat 5 then pushes the support ring 7, mounting seat 8, and gasket 6 out of the settling groove 4, and moves the lifting seat 5 until its end face is flush with the bottom of the sealing ring groove 3. Next, the pushed-out mounting seat 8, support ring 7, and gasket 6 are removed, and the waste liquid that has exited into the sealing ring groove 3 is cleaned using tools. After cleaning, the support ring 7, mounting seat 8, gasket 6, and sealing ring are reinstalled, and new oil is injected.

[0027] Compared with the prior art, the beneficial effects of this utility model are:

[0028] 1. This device is designed for air cylinders using stepped sealing grooves with high sealing performance. The sealing groove has an inverted "convex" structure, which consists of a sealing ring groove 3 with a wider cross section and a settling groove 4 with a narrower cross section, thus providing safe, reliable and stable sealing performance after the sealing ring is installed.

[0029] 2. This device is designed to meet the requirements of stable sealing in high-pressure environments. It uses a sealing oil and a sealing ring to achieve efficient sealing. Based on this, and considering the working environment of this device, a mounting base 8 structure that utilizes kinetic energy conversion is set in the settling tank 4. With the help of the fins 9 on it, this device can frequently raise the sealing oil to keep it in contact with the sealing ring during the movement of the equipment, thereby achieving long-term sealing.

[0030] 3. This device addresses the issue of auxiliary sealing oil being installed in the trapezoidal groove, and the need for routine maintenance due to oil aging. A liftable seat 5 is installed in the settling tank 4. This allows the waste liquid and structural components in the settling tank 4 to be pushed out by raising the lift seat 5 during cleaning of the settling tank 4 and the sealing ring groove 3, facilitating cleaning.

[0031] For those skilled in the art, modifications can be made to the technical solutions described in the foregoing embodiments, and equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-speed train air cylinder with a stepped sealing groove, comprising a cylinder body (1) and a cylinder cover (2), wherein the upper end of the cylinder body (1) is open, and the cylinder cover (2) covers the upper port of the cylinder body (1); characterized in that, It also includes: The sealing ring groove (3) is integrally formed and set on the end wall of the cylinder body (1), and the cylinder cover (2) is set on the sealing ring groove (3); Settling trough (4), wherein the settling trough (4) is opened at the bottom of the sealing ring groove (3), and the cross-sectional width of the settling trough (4) is smaller than the cross-sectional width of the sealing ring groove (3); The lifting seat (5) is a closed ring structure and is located in the settling tank (4). The inner and outer side walls of the lifting seat (5) abut against the inner side walls of the settling tank (4). Gasket (6), wherein the gasket (6) is a closed ring structure and is disposed in the settling groove (4), and the gasket (6) is disposed on the side of the lifting seat (5) facing the sealing ring groove (3).

2. A train air cylinder with a stepped sealing groove according to claim 1, characterized in that: The settling trough (4) is provided with a support ring (7), one side of the support ring (7) abuts against the lifting seat (5), and the other side of the support ring (7) abuts against the gasket (6).

3. A high-speed train air cylinder with a stepped sealing groove according to claim 2, characterized in that: The settling tank (4) is provided with an installation seat (8), which is a closed ring structure and is located between the lifting seat (5) and the gasket (6). Several fins (9) are fixedly arranged at equal angles on the side wall of the installation seat (8) facing the gasket (6), and several guide holes (10) are opened at equal angles on the gasket (6).

4. A train air cylinder with a stepped sealing groove according to claim 3, characterized in that: A counterweight (11) is fixedly installed on the mounting base (8), and the counterweight (11) is sandwiched between the inner ring wall of the settling tank (4) and the inner ring wall of the support ring (7). The axis of the guide hole (10) is set at a certain angle to the axis of the gasket (6).

5. A train air cylinder with a stepped sealing groove according to claim 4, characterized in that: The inner wall of the cylinder (1) is provided with a guide groove (12), and the guide groove (12) is connected to the interior of the settling groove (4). A pin (13) is fixedly provided on the inner ring wall of the lifting seat (5), and the pin (13) is movably inserted in the guide groove (12).

6. A train air cylinder with a stepped sealing groove according to claim 5, characterized in that: The cylinder body (1) is provided with a support sleeve (14), and the support sleeve (14) and the cylinder body (1) are spun together by a bearing. The support sleeve (14) is provided with a support groove (15), and the support groove (15) and the guide groove (12) are set at a certain angle. The pin (13) is movably inserted in the support groove (15).

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