Cylinder piston ring circumferential positioning device

Abstract

The utility model discloses a circumferential positioning device for a piston ring of a cylinder body, which is characterized in that a piston rod is movably connected in a cylinder barrel, a guide rod is fixedly connected on the outer surface of the piston rod, a positioning piece is fixedly connected at one end of the guide rod, a piston is fixedly connected on the outer surface of the piston rod, and the piston ring is fixedly connected on the front surface of the piston. Fixing plugs are fixedly connected to the front surface of the piston ring and the rear surface of the piston, a fixing piece is arranged at the end, away from the positioning piece, of the piston rod, fixing holes are formed in the surfaces of the positioning piece and the fixing piece, a plurality of spring pieces are fixedly connected to the two ends of the piston, and a spring is fixedly connected to the front surface of the piston ring; the other end of the spring is fixedly connected with a buffer piece, so that the piston can absorb and relieve impact force and vibration generated when the piston moves in the cylinder barrel, and the sealing effect and operation stability between the piston ring and the piston are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of cylinder piston rings, in particular to a circumferential positioning device for a cylinder piston ring. Background Art

[0002] The piston ring is the core component inside the fuel engine. It completes the sealing of fuel gas together with the cylinder, piston, cylinder wall, etc. Piston rings are widely used in various power machinery, such as steam engines, diesel engines, gasoline engines, compressors, hydraulic presses, etc., and are widely used in automobiles, trains, ships, yachts, etc. Generally, the piston ring is installed in the ring groove of the piston. It forms a chamber with the piston, cylinder liner, cylinder head and other components to do work. The forces acting on the piston ring include gas pressure, the ring's own elastic force, the inertia force of the ring's reciprocating motion, and the friction between the ring and the cylinder and the ring groove. Due to the action of these forces, the ring will produce basic movements such as axial movement, radial movement, and rotational movement.

[0003] In addition, due to its movement characteristics, the piston ring is accompanied by irregular movement, and inevitably has suspension and axial vibration caused by axial irregular movement, radial irregular movement and vibration, twisting movement, etc. These irregular movements often hinder the piston ring from playing its role. Because the piston is slightly smaller than the inner diameter of the cylinder, if there is no piston ring, the piston is unstable in the cylinder and cannot move freely. If this situation is not improved in the long run, the impact force and vibration generated by the piston movement will cause wear and damage to the mechanical parts, and the stability of the movement cannot be ensured. For this reason, we propose a cylinder piston ring circumferential positioning device to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide a circumferential positioning device for a cylinder piston ring. The spring connected between the buffer plates on the front surface of the piston ring is beneficial for the piston to absorb and alleviate the impact force and vibration generated during the movement of the piston in the cylinder, reduce the wear and damage of mechanical parts, and increase the stability of the mechanical system. The fixing plugs are arranged at both ends of the piston ring and the positioning plates and fixing plates are arranged on the outer surface of the piston rod, so that the sealing effect and operation stability between the piston ring and the piston are guaranteed when the piston and the piston ring are in motion.

[0005] The utility model also provides a cylinder piston ring circumferential positioning device as described above, comprising: a cylinder barrel, a piston rod movably connected inside the cylinder barrel, a guide rod fixedly connected to the outer surface of the piston rod, a positioning plate fixedly connected to one end of the guide rod, a piston fixedly connected to the outer surface of the piston rod, a piston fixedly connected to the front surface of the piston, a fixing plug fixedly connected to the front surface of the piston ring and a fixing plug fixedly connected to the rear surface of the piston, a fixing plate provided at one end of the piston rod away from the positioning plate, fixing holes provided on the surfaces of the positioning plate and the fixing plate, a plurality of spring plates fixedly connected to both ends of the piston, a spring fixedly connected to the front surface of the piston ring, and a buffer plate fixedly connected to the other end of the spring.

[0006] According to the cylinder piston ring circumferential positioning device of the utility model, the outer surface of the spring sheet contacts the inner wall of the cylinder barrel, so as to absorb and alleviate the impact force and vibration generated when the piston moves.

[0007] According to the cylinder piston ring circumferential positioning device described in the utility model, a groove is formed on the outer surface of the piston, and a sealing ring is fixedly connected inside the groove to contact the inside of the cylinder and play a sealing role.

[0008] According to the cylinder piston ring circumferential positioning device of the utility model, a sealing cover is fixedly connected to the front surface of the cylinder, and a sealing ring is arranged at the position where the cylinder contacts the guide rod, so as to prevent dust from entering the cylinder or air leakage.

[0009] According to the cylinder piston ring circumferential positioning device described in the utility model, the buffer sheet is fixedly connected to the inner wall of the cylinder barrel, and the front surface of the buffer sheet is in contact with the sealing ring, so as to play the role of buffering and sealing.

[0010] According to the cylinder piston ring circumferential positioning device described in the utility model, the front end surface of the cylinder barrel is fixedly connected with a front end cover, and the rear end surface of the cylinder barrel is fixedly connected with a rear end cover, which is used to fix the cylinder barrel.

[0011] According to the cylinder piston ring circumferential positioning device described in the utility model, a buffer is fixedly connected to the position where the rear end cover is connected to the cylinder barrel, and the front surface of the buffer is in conflict with the rear surface of the fixing plate, so as to protect the cylinder barrel.

[0012] According to the cylinder piston ring circumferential positioning device described in the utility model, the buffer sheet and the guide rod are movably connected, and the outer surface of the piston ring contacts the inner wall of the cylinder, which is convenient for stabilizing the extension and compression of the spring.

[0013] Beneficial Effects

[0014] 1. Compared with the prior art, the cylinder piston ring circumferential positioning device is beneficial for the piston to absorb and alleviate the impact force and vibration generated by the piston movement in the cylinder barrel through the spring connected between the buffer plates on the front surface of the piston ring, and reduces the wear and damage of mechanical parts and increases the stability of the mechanical system.

[0015] 2. Compared with the prior art, the cylinder piston ring circumferential positioning device uses fixing plugs arranged at both ends of the piston ring, and utilizes positioning plates and fixing plates arranged on the outer surface of the piston rod, and is combined with a spring plate connected to the surface of the piston, so that when the piston and piston ring are in motion, the radial supporting force for the piston ring, the sealing effect between the piston ring and the piston, and the stability of operation can be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0017] Figure 1 This is an external structural diagram of the cylinder piston ring circumferential positioning device of the utility model;

[0018] Figure 2 This is the overall structural diagram of the cylinder piston ring circumferential positioning device of the utility model;

[0019] Figure 3 This is an exploded view of the piston of the cylinder piston ring circumferential positioning device of the utility model;

[0020] Figure 4 It is an internal cross-sectional view of the cylinder piston ring circumferential positioning device of the utility model.

[0021] Legend:

[0022] 1. Cylinder barrel; 2. Piston rod; 3. Guide rod; 31. Positioning plate; 4. Piston; 41. Piston ring; 5. Sealing ring; 6. Spring plate; 7. Fixing plate; 8. Buffer plate; 9. Spring; 10. Front cover; 11. Rear cover; 12. Sealing cover; 13. Sealing ring; 14. Buffer. DETAILED DESCRIPTION

[0023] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0024] Reference Figure 1-4The utility model embodiment is a cylinder piston ring circumferential positioning device, which includes: a cylinder 1, the cylinder 1 is movably connected with a piston rod 2 inside, which is used to connect and push and pull a piston 4, the outer surface of the piston rod 2 is fixedly connected with a guide rod 3, which is used to ensure the stability of the movement of the piston rod 2, one end of the guide rod 3 is fixedly connected with a positioning piece 31, which is used to connect with the piston 4 and guide the stability of the movement of the piston 4, the outer surface of the piston rod 2 is fixedly connected with the piston 4, the front surface of the piston 4 is fixedly connected with a piston ring 41, which ensures that the piston ring is correctly positioned along the circumferential direction inside the cylinder 1, and the front surface of the piston ring 41 and the rear surface of the piston 4 are fixedly connected with fixing plugs, which are used to connect with the fixing holes so that the fixing The positioning plate 31 and the fixing plate 7 are fixed to the piston 4. A fixing plate 7 is provided at one end of the piston rod 2 away from the positioning plate 31, which is used to fix the connection between the piston 4 and the piston rod 2. The surfaces of the positioning plate 31 and the fixing plate 7 are provided with fixing holes for connecting with the fixing holes. Both ends of the piston 4 are fixedly connected with a plurality of spring plates 6 to provide radial support force for the piston ring to prevent the piston ring from shaking during circumferential movement in the cylinder 1 and improve the positioning accuracy of the piston ring. A spring 9 is fixedly connected to the front surface of the piston ring 41 to absorb and alleviate the impact force and vibration generated during the movement of the piston. A buffer plate 8 is fixedly connected to the other end of the spring 9 to reduce the impact pressure generated on the inside of the cylinder 1 when the piston 4 moves.

[0025] The outer surface of the spring sheet 6 is in contact with the inner wall of the cylinder 1, and is used to absorb and alleviate the impact force and vibration generated by the movement of the piston. A groove is provided on the outer surface of the piston 4, and a sealing ring 5 is fixedly connected to the inside of the groove, which is used to contact the inside of the cylinder 1 and play a sealing role. A sealing cover 12 is fixedly connected to the front surface of the cylinder 1, and a sealing ring 13 is provided at the position inside the cylinder 1 that contacts the guide rod 3. Used to prevent dust from entering the cylinder 1 or air leakage, the buffer plate 8 is fixedly connected to the inner wall of the cylinder 1, and the front surface of the buffer plate 8 is in contact with the sealing ring 13 to play a role of buffering and sealing. The front end surface of the cylinder 1 is fixedly connected with the front end cover 10, and the rear end surface of the cylinder 1 is fixedly connected with the rear end cover 11 to fix the cylinder 1. The interior of the rear end cover 11 is fixedly connected with a buffer 14 at a position connected to the cylinder 1, and the front surface of the buffer 14 is in contact with the rear surface of the fixing plate 7 to play a role in protecting the cylinder 1. The buffer plate 8 and the guide rod 3 are set to be movably connected, and the outer surface of the piston ring 41 is in contact with the inner wall of the cylinder 1 to facilitate the tension and compression of the stable spring 9.

[0026] Working principle: When the piston moves in the cylinder 1, the piston rod 2 drives the piston 4 to move. The guide rod 3, the positioning plate 31 and the fixing plate 7 use the fixing plug and the fixing hole to make the piston ring 41 connected to the piston 4 move in contact with the inner wall of the cylinder 1 and maintain the stability of the movement. The spring 9 is also stretched and compressed accordingly. At the same time, the spring plate 6 supports the piston ring during the piston movement and plays a role in sealing and stabilizing the operation.

[0027] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A circumferential positioning device for a cylinder piston ring, characterized in that: include: A cylinder (1), wherein the interior of the cylinder (1) is movably connected to a piston rod (2), the outer surface of the piston rod (2) is fixedly connected to a guide rod (3), one end of the guide rod (3) is fixedly connected to a positioning plate (31), the outer surface of the piston rod (2) is fixedly connected to a piston (4), the front surface of the piston (4) is fixedly connected to a piston ring (41), the front surface of the piston ring (41) and the rear surface of the piston (4) are both fixedly connected to fixing plugs, the end of the piston rod (2) away from the positioning plate (31) is provided with a fixing plate (7), the surfaces of the positioning plate (31) and the fixing plate (7) are both provided with fixing holes, the two ends of the piston (4) are fixedly connected to a plurality of spring plates (6), the front surface of the piston ring (41) is fixedly connected to a spring (9), and the other end of the spring (9) is fixedly connected to a buffer plate (8).

2. A cylinder piston ring circumferential positioning device according to claim 1, characterized in that: The outer surface of the spring sheet (6) is in contact with the inner wall of the cylinder (1).

3. A cylinder piston ring circumferential positioning device according to claim 1, characterized in that: The outer surface of the piston (4) is provided with a groove, and a sealing ring (5) is fixedly connected inside the groove.

4. A cylinder piston ring circumferential positioning device according to claim 1, characterized in that: A sealing cover (12) is fixedly connected to the front surface of the cylinder (1), and a sealing ring (13) is provided at a position inside the cylinder (1) that contacts the guide rod (3).

5. The cylinder piston ring circumferential positioning device according to claim 1, characterized in that: The buffer sheet (8) is fixedly connected to the inner wall of the cylinder (1), and the front surface of the buffer sheet (8) is in contact with the sealing ring (13).

6. A cylinder piston ring circumferential positioning device according to claim 1, characterized in that: The front end surface of the cylinder barrel (1) is fixedly connected to a front end cover (10), and the rear end surface of the cylinder barrel (1) is fixedly connected to a rear end cover (11).

7. A cylinder piston ring circumferential positioning device according to claim 6, characterized in that: A buffer (14) is fixedly connected to the position where the rear end cover (11) is connected to the cylinder (1), and the front surface of the buffer (14) is in contact with the rear surface of the fixing plate (7).

8. The cylinder piston ring circumferential positioning device according to claim 1, characterized in that: The buffer plate (8) and the guide rod (3) are movably connected, and the outer surface of the piston ring (41) is in contact with the inner wall of the cylinder barrel (1).

Images