Compensation car pressing oil cylinder of car dumper

Abstract

The utility model relates to a compensation car pressing oil cylinder of a car dumper, which comprises a cylinder barrel, an air cylinder body, a piston, a pneumatic piston, a cylinder tail and a piston rod. The other end of the cylinder barrel is connected with an air cylinder body; a cylinder cover is arranged at the end, away from the cylinder barrel, of the cylinder body. The piston rod penetrates through the cylinder cover and is positioned in the cylinder barrel and the cylinder body; the piston is positioned in the cylinder barrel; the piston is fixedly connected with one end of the piston rod; the pneumatic piston is located in the air cylinder body. The pneumatic piston is in sliding connection with the piston rod. The pneumatic piston arranged in the air cylinder body and high-pressure air in the air cavity can be adjusted according to the oil pressure change in the cylinder barrel (rod cavity), flexible stretching and retracting of the piston rod are achieved, automatic compensation can be achieved, and the working stability of the hydraulic oil cylinder is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil cylinders, and in particular designs a compensating car pressing oil cylinder for a car tipping machine. Background Art

[0002] The existing car pressing cylinder is mainly a common hydraulic cylinder to clamp and fix the train skin. In addition, in order to release the spring, the hydraulic cylinder needs to be in a floating state during the flipping process without protection lock.

[0003] Ordinary oil cylinders realize normal tipping of train wagons, while hydraulic cylinders are in a floating state. Without protection and locking, it is easy to cause the train wagons to derail or even fall. And it needs to cooperate with the compensation oil cylinder to release the spring reaction force generated by the dumping of materials. However, the piston rod of the compensation oil cylinder is often corroded, and the detection switch often fails due to excessive dust, resulting in the inability of the entire tipping machine system to operate normally, which has a great impact on the production efficiency and production time of the enterprise. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a compensating car pressing oil cylinder for a car tipping machine, which can realize automatic compensation and is safe and reliable.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A compensating car-pressing oil cylinder for a car tipping machine comprises: a cylinder barrel, a cylinder body, a piston, a pneumatic piston, a cylinder tail and a piston rod, wherein one end of the cylinder barrel is connected to the cylinder tail; the other end of the cylinder barrel is connected to the cylinder body; a cylinder head is arranged at an end of the cylinder body away from the cylinder barrel; the piston rod passes through the cylinder head and is arranged between the cylinder barrel and the cylinder body; the piston is arranged in the cylinder barrel; the piston is fixedly connected to one end of the piston rod; the pneumatic piston is arranged in the cylinder body; the pneumatic piston is slidably connected to the piston rod; a pneumatic structure is arranged between the pneumatic piston and the cylinder head; the cylinder head is fixedly connected to the cylinder body; a threaded oil port is arranged on the cylinder tail; a flange oil port is arranged on the cylinder body; the flange oil port is arranged between the piston and the pneumatic piston.

[0007] Furthermore, the pneumatic structure is composed of a stop ring, an inflation valve and an inflation port, the inflation port is arranged on the cylinder body; the inflation valve is installed on the inflation port; the stop ring is located in the cylinder body; the stop ring is fixedly connected to the cylinder cover by threads; an air chamber is arranged between the pneumatic piston and the stop ring; and the inflation port is connected to the air chamber.

[0008] Furthermore, a seal 1 is provided between the piston and the rod chamber; and a seal 2 is provided between the piston and the piston rod.

[0009] Furthermore, the pneumatic piston is arranged on the cylinder body and the piston rod with a sealing member 4; the pneumatic piston is arranged on the cylinder body and the piston rod with a sealing member 5.

[0010] Furthermore, a first earring is arranged on the cylinder tail; a second earring is arranged on the end of the piston rod away from the piston; and the second earring is fixedly connected to the piston rod through a thread.

[0011] Furthermore, the cylinder barrel is connected to the cylinder body via a flange.

[0012] Furthermore, the cylinder cover is fixed to the cylinder body by screws.

[0013] Furthermore, a sealing member three is provided between the cylinder barrel and the cylinder body.

[0014] Furthermore, the piston is threadedly connected to the piston rod.

[0015] Furthermore, a seal six is ​​provided between the cylinder cover and the piston rod; and a dust seal is provided at one end of the cylinder cover close to the second earring.

[0016] The beneficial effects of the utility model compared with the prior art are:

[0017] The present application provides a compensating car pressing oil cylinder for a car tipping machine, which adopts an integrated design, realizes compensation by compressing inert gas through a compensating piston installed inside the cylinder, and the car pressing oil cylinder automatically compensates without electrical control. Due to the fully enclosed design, it is resistant to pollution and harsh environment, has a simple structure, a small size, and is easy to maintain, effectively solving the defects and complementing the existing car pressing oil cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the embodiment of the utility model in a contracted state;

[0020] Figure 3 This is a schematic diagram of the structure of the compensation state of an embodiment of the utility model;

[0021] In the figure: 1. cylinder tail, 2. piston, 3. seal one, 4. seal two, 5. piston rod, 6. cylinder barrel, 7. flange, 8. cylinder body, 9. pneumatic piston, 10. cylinder head, 11. seal three, 12. seal four, 13. seal five, 14. charging valve, 15. stop ring, 16. seal six, 17. dust seal, 18. second earring, 19. first earring, 20. threaded oil port, 21. flange oil port, 22. charging port, d. compensation distance. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] like Figure 1 As shown, a compensating car pressing cylinder for a car tipping machine comprises: a cylinder barrel 6, a cylinder body 8, a piston 2, a pneumatic piston 9, a cylinder tail 1 and a piston rod 5, one end of the cylinder barrel 6 is connected to the cylinder tail 1; the other end of the cylinder barrel 6 is connected to the cylinder body 8; a cylinder cover 10 is arranged on the cylinder body 8 away from one end of the cylinder barrel; the piston rod 5 passes through the cylinder cover 10 and is located in the cylinder barrel 6 and the cylinder body 8; the piston 2 is located in the cylinder barrel 6; the piston 2 is fixedly connected to one end of the piston rod 5; the pneumatic piston 9 is located in the cylinder body 8; the pneumatic piston 9 is slidably connected to the piston rod 5; a pneumatic structure is arranged between the pneumatic piston 9 and the cylinder cover 10; the cylinder cover 10 is fixedly connected to the cylinder body 8; a threaded oil port 20 is arranged on the cylinder tail 1; a flange oil port 21 is arranged on the cylinder body 8; the flange oil port 21 is located between the piston 2 and the pneumatic piston 9, and the size of the start cylinder body 8 can be designed according to actual needs.

[0024] Furthermore, the pneumatic structure is composed of a stop ring 15, an inflation valve 14 and an inflation port 22, and the inflation port 22 is arranged on the cylinder body 8; the inflation valve 14 is installed on the inflation port 22; the stop ring 15 is located in the cylinder body 8; the stop ring 15 is fixedly connected to the cylinder head 10 by threads; an air chamber is arranged between the pneumatic piston 9 and the stop ring 15; the inflation port 22 is connected to the air chamber; it should be noted that high-pressure inert gas is filled into the pneumatic structure to realize a buffering function, and the pneumatic structure can be compressed as the oil pressure in the hydraulic cylinder changes; the pressure of the pneumatic structure can be set according to actual work needs; it should be noted that the pneumatic structure can play a buffering role when the pneumatic piston 9 moves in the cylinder body 8 toward one end away from the cylinder barrel.

[0025] Furthermore, in order to improve the sealing performance of the oil cylinder, a seal 1 3 is provided between the piston 2 and the rod chamber; a seal 2 4 is provided between the piston 2 and the piston rod 5.

[0026] Furthermore, the pneumatic piston 9 is arranged on the cylinder body 8 and the piston rod 5 with a sealing member 12; the pneumatic piston 9 is arranged on the cylinder body 8 and the piston rod 5 with a sealing member 13.

[0027] Furthermore, in order to facilitate the connection between the hydraulic cylinder and external equipment, a first earring 19 is provided on the cylinder tail 1; a second earring 18 is provided on the end of the piston rod 5 away from the piston; and the second earring 18 is fixedly connected to the piston rod through threads.

[0028] Furthermore, the cylinder barrel 6 is connected to the cylinder body 8 via a flange 7 , which can improve the sealing performance and rigidity between the cylinder barrel and the cylinder body 8 .

[0029] Furthermore, the cylinder head 10 is fixed to the cylinder body 8 by screws.

[0030] Furthermore, a sealing member 11 is provided between the cylinder barrel 6 and the cylinder body 8.

[0031] Furthermore, the piston and the piston rod 5 are threadedly connected.

[0032] Furthermore, a sealing member 16 is provided between the cylinder cover 10 and the piston rod 5 ; and a dust seal 17 is provided at one end of the cylinder cover 10 close to the second earring 18 .

[0033] It should be noted that the pneumatic piston in the above technical solution will not be displaced when the piston rod is normally extended and retracted (i.e. the oil cylinder is working normally). Only when the piston rod is extended and retracted into the cylinder barrel and self-locked, and the oil pressure in the rod chamber in the cylinder barrel continues to increase, the pneumatic piston will move in the cylinder body. The design of the above technical solution can adjust the high-pressure gas in the air chamber according to the oil pressure change in the cylinder barrel (rod chamber) through the pneumatic piston and the air chamber arranged in the cylinder body, so as to realize the flexible extension and retraction of the piston rod, thereby realizing automatic compensation and improving the working stability of the hydraulic cylinder.

[0034] Action process: When in use, when the threaded oil port A is filled with oil and the flange oil port B is closed (opened), the piston and the piston rod move to the left under the push of the medium, and the piston rod extends. When it moves to the left end limit, the piston and the piston rod stop moving and reach the left end point; when the flange oil port B is filled with oil and the threaded oil port A is closed (opened), the piston and the piston rod move to the right under the push of the medium, and the piston rod contracts. When it moves to the right end limit, the piston and the piston rod stop moving and reach the right end point; when the A and B ports are closed, when the piston rod is subjected to external load tension, as the tension gradually increases, the (rod chamber) pressure value continues to rise until it overcomes the pre-charge pressure of the air chamber, and the pneumatic piston moves up, so that the piston rod moves up, consumes the compensation distance, and releases the excess pressure to achieve the compensation effect. When the piston rod is subjected to the external load tension disappears, when the pressure of the threaded oil port B drops below the pressure of the air pressure structure, the pneumatic piston resets, completes a compensation action, and finally ensures that the piston rod can achieve flexible extension and retraction during the contraction operation.

[0035] The above is only a preferred specific implementation manner of the present invention, and the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A compensating car pressing cylinder for a car tipping machine, characterized in that: include: Cylinder barrel, cylinder body, piston, pneumatic piston, cylinder tail and piston rod, one end of the cylinder barrel is connected to the cylinder tail; the other end of the cylinder barrel is connected to the cylinder body; a cylinder head is arranged at the end of the cylinder body away from the cylinder barrel; the piston rod passes through the cylinder head and is located in the cylinder barrel and the cylinder body; the piston is located in the cylinder barrel; the piston is fixedly connected to one end of the piston rod; the pneumatic piston is located in the cylinder body; the pneumatic piston is slidably connected to the piston rod; a pneumatic structure is arranged between the pneumatic piston and the cylinder head; the cylinder head is fixedly connected to the cylinder body; a threaded oil port is arranged on the cylinder tail; a flange oil port is arranged on the cylinder body; the flange oil port is located between the piston and the pneumatic piston.

2. The compensating car pressing cylinder of a car tipping machine according to claim 1, characterized in that: The pneumatic structure consists of a stop ring, an inflation valve and an inflation port. The inflation port is arranged on the cylinder body; the inflation valve is installed on the inflation port; the stop ring is located in the cylinder body; the stop ring is fixedly connected to the cylinder cover by threads; an air chamber is arranged between the pneumatic piston and the stop ring; and the inflation port is connected to the air chamber.

3. The compensating car pressing cylinder of a car tipping machine according to claim 1, characterized in that: A seal 1 is arranged between the piston and the rod chamber; a seal 2 is arranged between the piston and the piston rod.

4. The compensating car pressing cylinder of a car tipping machine according to claim 1, characterized in that: The pneumatic piston is arranged on the cylinder body and the piston rod with a sealing member 4; the pneumatic piston is arranged on the cylinder body and the piston rod with a sealing member 5.

5. The compensating car pressing cylinder of a car tipping machine according to claim 1 is characterized in that : A first earring is arranged on the cylinder tail; a second earring is arranged on the end of the piston rod away from the piston; the second earring is fixedly connected to the piston rod through a thread.

6. The compensating car pressing cylinder of a car tipping machine according to claim 1, characterized in that: The cylinder barrel is connected to the cylinder body through a flange.

7. The compensating car pressing cylinder of a car tipping machine according to claim 1, characterized in that: The cylinder cover is fixed on the cylinder body by screws.

8. The compensating car pressing cylinder of a car tipping machine according to claim 1, characterized in that: A sealing member 3 is arranged between the cylinder barrel and the cylinder body.

9. The compensating car pressing cylinder of a car tipping machine according to claim 1, characterized in that: The piston is threadedly connected to the piston rod.

10. The compensating car pressing cylinder of a car tipping machine according to claim 1, characterized in that: A sealing member 6 is arranged between the cylinder cover and the piston rod; and a dust seal is arranged at one end of the cylinder cover close to the second earring.

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