CN215830861U

CN215830861U - High straightness accuracy integral type pneumatic cylinder

Info

Publication number: CN215830861U
Application number: CN202121871340.3U
Authority: CN
Inventors: 周鸣杰
Original assignee: Wuxi Shibang Machinery Manufacture Co ltd
Current assignee: Wuxi Shibang Machinery Manufacture Co ltd
Priority date: 2021-08-11
Filing date: 2021-08-11
Publication date: 2022-02-15
Anticipated expiration: 2031-08-11

Abstract

The utility model discloses a high-straightness integrated hydraulic cylinder, which comprises a cylinder body, wherein a buffer pad is arranged on the left side surface of a right sealing cover, a plurality of groups of elastic balls are filled in the buffer pad, a piston is connected in a sliding manner in the cylinder body, a round block and a conical block are respectively arranged on the right side surface and the left side surface of the piston, a piston rod is arranged on the left side surface of the conical block, a baffle ring and a buffer block are arranged on the left side surface in the cylinder body, two groups of first oil holes are symmetrically arranged on the surface of the baffle ring, two groups of second oil holes are symmetrically arranged on the surface of the buffer block, two groups of springs are arranged on the right side surface of the left sealing cover, penetrate through the first oil holes and are fixedly connected with the buffer block, a first oil pipe and a second oil pipe are respectively arranged on the left side and the right side of the upper surface of the cylinder body, so that the service life of the hydraulic cylinder is prolonged, and the left sealing cover and the baffle ring are sleeved on the surface of the piston rod to form double fixation, ensuring the extending linearity of the piston rod.

Description

High straightness accuracy integral type pneumatic cylinder

Technical Field

The utility model relates to the technical field of hydraulic cylinders, in particular to a high-straightness integrated hydraulic cylinder.

Background

The hydraulic cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and makes linear reciprocating motion. It has simple structure and reliable operation. When it is used to implement reciprocating motion, it can omit speed-reducing device, and has no transmission gap, and its motion is stable, so that it can be extensively used in various mechanical hydraulic systems. When a piston rod of the existing hydraulic cylinder runs to a terminal, mechanical collision can occur between the piston and the sealing cover, certain impact force is generated, the impact force can cause damage to the piston, oil seepage can occur inside the cylinder body, power of the hydraulic cylinder is insufficient, and meanwhile linearity of the piston rod during stretching can be influenced. For this reason, we propose a high straightness integrated hydraulic cylinder.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a high-straightness integrated hydraulic cylinder to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: a high-straightness integrated hydraulic cylinder comprises a cylinder body, wherein a left sealing cover and a right sealing cover are respectively mounted at the left end and the right end of the cylinder body, a dustproof ring and a sealing ring are respectively embedded in the left side surface and the right side surface of the left sealing cover, the right side surface of the right sealing cover is fixedly connected with a fixing ring, the surface of the left sealing cover is fixedly connected with the cylinder body through a plurality of groups of first screws, and the surface of the right sealing cover is fixedly connected with the cylinder body through a plurality of groups of second screws;

a buffer pad is arranged on the left side surface of the right sealing cover, a plurality of groups of elastic balls are filled in the buffer pad, a piston is connected in the cylinder body in a sliding manner, an annular groove is formed in the surface of the piston, a sealing ring is sleeved in the annular groove, and the sealing ring abuts against the inner wall of the cylinder body;

the right side surface and the left side surface of the piston are respectively provided with a round block and a conical block, the conical block is specifically arranged in a conical cylinder shape with a smaller left end and a larger right end, the left side surface of the conical block is provided with a piston rod, and the left end of the piston rod is fixedly connected with the connecting ring after extending out of the cylinder body;

a baffle ring and a buffer block are arranged on the left side inside the cylinder body, the baffle ring is fixedly connected with the cylinder body, the buffer block is connected with the cylinder body in a sliding manner, a conical cylindrical groove is arranged on the right side surface of the buffer block, and the size of the conical cylindrical groove is matched with that of the conical block;

the oil cylinder is characterized in that two groups of first oil holes are symmetrically formed in the surface of the baffle ring, two groups of second oil holes are symmetrically formed in the surface of the buffer block, two groups of springs are arranged on the right side face of the left seal cover and fixedly connected with the buffer block after penetrating through the first oil holes, and a first oil pipe and a second oil pipe are respectively arranged on the left side and the right side of the upper surface of the cylinder body.

Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, hydraulic oil is introduced into the cylinder body through the second oil pipe, the hydraulic oil pushes the piston to move leftwards, when the conical block abuts against the buffer block, the buffer block compresses two groups of springs, the rebound force of the springs generates a rightward force on the piston to buffer the piston, when the hydraulic oil is introduced through the first oil pipe, the hydraulic oil pushes the piston to move rightwards, the round block is in contact with the buffer pad, the piston is prevented from directly touching the buffer pad, the elastic ball in the buffer pad keeps the elasticity of the buffer pad, the buffer performance of the buffer pad is ensured, the sealing ring can improve the air tightness between the piston and the cylinder body, the dust ring can prevent dust particles on the piston rod from entering the cylinder body, and the sealing ring can improve the air tightness between the piston rod and the left sealing cover and prevent hydraulic oil from leaking;

the piston is well protected, so that the service life of the hydraulic cylinder is prolonged, the left sealing cover and the baffle ring are sleeved on the surface of the piston rod to form double fixation, and the extending linearity of the piston rod is ensured.

Drawings

FIG. 1 is a schematic cross-sectional view of the present invention;

FIG. 2 is a schematic view of the interior of the cushion of the present invention;

FIG. 3 is an enlarged schematic view of the structure of FIG. 1 at A.

In the figure: 1. a cylinder body; 2. a piston; 3. a conical block; 4. a round block; 5. a seal ring; 6. a cushion pad; 7. an elastic ball; 8. a piston rod; 9. a buffer block; 10. a second oil hole; 11. a baffle ring; 12. a first oil hole; 13. a spring; 14. a first oil pipe; 15. a second oil pipe; 16. a right sealing cover; 17. a second screw; 18. a left cover; 19. a first screw; 20. a dust ring; 21. a seal ring; 22. a connecting ring; 23. and (4) fixing the ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a high-straightness integrated hydraulic cylinder comprises a cylinder body 1, wherein a left sealing cover 18 and a right sealing cover 16 are respectively mounted at the left end and the right end of the cylinder body 1, the left sealing cover 18 and the right sealing cover 16 seal the cylinder body 1 to prevent hydraulic oil in the cylinder body 1 from leaking, a cushion pad 6 is arranged on the left side surface of the right sealing cover 16, a plurality of groups of elastic balls 7 are filled in the cushion pad 6, and the elastic balls 7 have elasticity to maintain the elasticity of the cushion pad 6;

a piston 2 is connected in the cylinder body 1 in a sliding mode, a round block 4 and a conical block 3 are arranged on the right side face and the left side face of the piston 2 respectively, the diameter of the round block 4 is smaller than that of the piston 2, it is ensured that hydraulic oil can push the piston 2 to move leftwards, a piston rod 8 is arranged on the left side face of the conical block 3, and the piston 2 can control the piston rod 8 to move leftwards and rightwards;

a baffle ring 11 and a buffer block 9 are arranged on the left side inside the cylinder body 1, central holes matched with the diameter of the piston rod 8 are formed in the surfaces of the baffle ring 11 and the buffer block 9, two groups of first oil holes 12 are symmetrically formed in the surface of the baffle ring 11, and two groups of second oil holes 10 are symmetrically formed in the surface of the buffer block 9, so that the piston 2 can be smoothly pushed by hydraulic oil to move rightwards;

the right side of the left sealing cover 18 is provided with two sets of springs 13, the two sets of springs 13 penetrate through the first oil hole 12 and are fixedly connected with the buffer block 9, the left side and the right side of the upper surface of the cylinder body 1 are respectively provided with a first oil pipe 14 and a second oil pipe 15, and the first oil pipe 14 and the second oil pipe 15 are communicated with an external oil pump to enable hydraulic oil to enter the cylinder body 1.

Specifically, 2 surfaces of the piston are provided with annular grooves, and sealing rings 5 are sleeved in the annular grooves, the sealing rings 5 are abutted to the inner wall of the cylinder body 1, the leakage of hydraulic oil from the joint of the piston 2 and the inner wall of the cylinder body 1 is prevented, and the power of the piston rod 8 is ensured to be sufficient.

Specifically, the surface of the left sealing cover 18 is fixedly connected with the cylinder body 1 through a plurality of groups of first screws 19, and the surface of the right sealing cover 16 is fixedly connected with the cylinder body 1 through a plurality of groups of second screws 17, so that the left sealing cover 18 and the right sealing cover 16 are tightly connected with the cylinder body 1, and hydraulic oil leakage is prevented.

Specifically, the dust ring 20 and the sealing ring 21 are respectively embedded in the left side surface and the right side surface of the left sealing cover 18, when the piston rod 8 extends out of the cylinder body 1, dust in the air can fall on the surface of the piston rod 8, and when the piston rod 8 retracts, the dust ring 20 can scrape off the dust to prevent the dust from entering the cylinder body 1.

Specifically, the left end of the piston rod 8 is fixedly connected with the connecting ring 22 after extending out of the cylinder body 1, the connecting ring 22 is used for connecting external mechanical equipment, the right side surface of the right sealing cover 16 is fixedly connected with the fixing ring 23, and the fixing ring 23 is used for installing and fixing the cylinder body 1.

Specifically, when the hydraulic buffer is used, the first oil pipe 14 and the second oil pipe 15 are communicated with an external oil pump, if the piston rod 8 is required to be controlled to extend out, hydraulic oil can be introduced into the cylinder body 1 through the second oil pipe 15, because the piston 2 is in sealed sliding connection with the cylinder body 1, the piston 2 can push the piston 2 to move leftwards, the piston 2 drives the piston rod 8 to move leftwards, and further the piston rod 8 is controlled to extend out of the cylinder body 1, when the conical block 3 on the left side of the piston 2 is in contact with the buffer block 9, the buffer block 9 extrudes two groups of springs 13 to buffer the piston 2, when the piston rod 8 is required to be controlled to retract, the hydraulic oil is introduced into the cylinder body 1 through the first oil pipe 14, the hydraulic oil passes through the first oil hole 12 and the second oil hole 10 and pushes the piston 2 to move rightwards, and further the piston rod 8 retracts, when the round block 4 on the right side of the piston rod 8 is in contact with the buffer pad 6, the piston 2 is buffered, the piston 2 can be ensured to move leftwards or rightwards for buffering, the service life of the piston 2 is prolonged, and the power of the piston rod 8 is maintained.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a high straightness accuracy integral type pneumatic cylinder, includes cylinder body (1), its characterized in that: the cylinder is characterized in that a left sealing cover (18) and a right sealing cover (16) are respectively installed at the left end and the right end of the cylinder body (1), a buffer pad (6) is arranged on the left side face of the right sealing cover (16), a plurality of groups of elastic balls (7) are filled in the buffer pad (6), a piston (2) is connected to the inside of the cylinder body (1) in a sliding manner, a round block (4) and a conical block (3) are respectively arranged on the right side face and the left side face of the piston (2), a piston rod (8) is arranged on the left side face of the conical block (3), a baffle ring (11) and a buffer block (9) are arranged on the left side of the inside of the cylinder body (1), two groups of first oil holes (12) are symmetrically arranged on the surface of the baffle ring (11), two groups of second oil holes (10) are symmetrically arranged on the surface of the buffer block (9), two groups of springs (13) are fixedly connected with the buffer block (9) after penetrating through the first oil holes (12), the left side and the right side of the upper surface of the cylinder body (1) are respectively provided with a first oil pipe (14) and a second oil pipe (15).

2. A high straightness integrated hydraulic cylinder according to claim 1, wherein: the piston (2) surface is equipped with the ring channel, and has cup jointed sealing washer (5) in the ring channel, sealing washer (5) are supported on cylinder body (1) inner wall.

3. A high straightness integrated hydraulic cylinder according to claim 1, wherein: the surface of the left sealing cover (18) is fixedly connected with the cylinder body (1) through a plurality of groups of first screws (19), and the surface of the right sealing cover (16) is fixedly connected with the cylinder body (1) through a plurality of groups of second screws (17).

4. A high straightness integrated hydraulic cylinder according to claim 1, wherein: and a dustproof ring (20) and a sealing ring (21) are respectively embedded in the left side surface and the right side surface of the left sealing cover (18).

5. A high straightness integrated hydraulic cylinder according to claim 1, wherein: the left end of the piston rod (8) is fixedly connected with the connecting ring (22) after extending out of the cylinder body (1), and the right side surface of the right sealing cover (16) is fixedly connected with the fixing ring (23).