CN210343914U

CN210343914U - Guide device for hydraulic cylinder

Info

Publication number: CN210343914U
Application number: CN201921421629.8U
Authority: CN
Inventors: 罗胜飞
Original assignee: Suzhou Jinwei Hydraulic Power Equipment Co Ltd
Current assignee: Suzhou Jinwei Hydraulic Power Equipment Co Ltd
Priority date: 2019-08-29
Filing date: 2019-08-29
Publication date: 2020-04-17
Anticipated expiration: 2029-08-29

Abstract

The utility model discloses a guiding device for a hydraulic cylinder, which comprises a cylinder body, wherein one end of the cylinder body is fixedly connected with a first cylinder cover, the other end of the cylinder body is fixedly connected with a second cylinder cover, the center of the cylinder body is slidably connected with a piston, the center of the piston is fixedly connected with a piston rod, one end of the cylinder body is fixedly connected with a first fixed flange plate around, the other end of the cylinder body is fixedly connected with a second fixed flange plate around, one side of the inner wall of the cylinder body, which is close to the second fixed flange plate, is provided with a first oil port, two guide sleeves are fixedly connected between the first fixed flange plate and the second fixed flange plate, the centers of the two guide sleeves are fixedly connected with guide pillars, the front ends of the two guide pillars are fixedly connected with a guide plate, the top end of the piston rod is fixedly connected, the guide disc is fixed on the piston rod, so that the piston rod can only do linear reciprocating motion.

Description

Guide device for hydraulic cylinder

Technical Field

The utility model relates to a hydraulic equipment field especially relates to a guider for pneumatic cylinder.

Background

The hydraulic cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging 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. The output force of the hydraulic cylinder is in direct proportion to the effective area of the piston and the pressure difference between the two sides of the effective area; the hydraulic cylinder is basically composed of a cylinder barrel and a cylinder cover, a piston and a piston rod, a sealing device, a buffering device and an exhaust device.

The piston rod in the hydraulic cylinder which makes linear reciprocating motion generates relative rotation due to unstable environment in the working process of the existing hydraulic cylinder, so that the piston rotates, the air tightness of the piston is influenced, the abrasion of the piston is increased, and the service life of the hydraulic cylinder is shortened.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects in the prior art, and provides a guide device for a hydraulic cylinder.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a guide device for a hydraulic cylinder comprises a cylinder body, wherein one end of the cylinder body is fixedly connected with a first cylinder cover, the other end of the cylinder body is fixedly connected with a second cylinder cover, the center of the cylinder body is connected with a piston in a sliding way, a piston rod is fixedly connected at the center of the piston, a first fixed flange is fixedly connected on the peripheral side of one end of the cylinder body, a second fixed flange is fixedly connected on the periphery of the other end of the cylinder body, a first oil port is arranged on one side of the inner wall of the cylinder body close to the second fixed flange, two guide sleeves are fixedly connected between the first fixed flange plate and the second fixed flange plate, guide posts are fixedly connected at the centers of the two guide sleeves, guide discs are fixedly connected at the front ends of the two guide posts, the piston rod is characterized in that the top end of the piston rod is fixedly connected with a sleeve, a bearing is fixedly connected inside the sleeve, and a connecting ring is fixedly connected at the center of the bearing.

As a further description of the above technical solution:

the top of the guide pillar is a stepped shaft, the top step is a threaded rod, and the periphery of the threaded rod is connected with an inner hexagonal nut through threads.

As a further description of the above technical solution:

the tail end of piston rod is the step shaft, the piston has been cup jointed to the first section ladder week side of step shaft, and the second section ladder week side has fixed cover through threaded connection, the third section ladder week side of step shaft is provided with hexagon nut, the inside of fixed cover is provided with the recess, and the nut setting is in the recess.

As a further description of the above technical solution:

the center of the first cylinder cover is provided with a second oil port, and the cross section of the second oil port is in a step shape.

As a further description of the above technical solution:

and a guide sleeve and a sealing ring are arranged at the center of the second cylinder cover.

As a further description of the above technical solution:

and a fastening screw is arranged at the joint of the sleeve and the piston rod.

As a further description of the above technical solution:

the bearing is an angular contact bearing.

The utility model discloses following beneficial effect has:

1. the utility model discloses a guide pillar and guide pin bushing of external, fix the positioning disk on the piston rod, cause the piston rod can only straight reciprocating motion.

2. The utility model discloses a set up the bearing between piston rod and go-between, outside will rotating the transfer cylinder body, prevent to cause the influence to the internals of cylinder body.

Drawings

Fig. 1 is a front view of a guide device for a hydraulic cylinder according to the present invention;

fig. 2 is a schematic view of a guide plate of a guide device for a hydraulic cylinder according to the present invention;

FIG. 3 is an enlarged view taken at A in FIG. 1;

fig. 4 is a schematic view of a second cylinder head of the guiding device for a hydraulic cylinder according to the present invention.

Illustration of the drawings:

1. a first cylinder head; 2. a first fixed flange; 3. a guide sleeve; 4. a second fixed flange; 5. a second cylinder head; 6. a guide plate; 7. a bearing; 8. a connecting ring; 9. a guide post; 10. a piston rod; 11. a piston; 12. fixing a sleeve; 13. an inner hexagonal nut; 14. a first oil port; 15. a second oil port; 16. a sleeve; 17. a cylinder body.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-4, the present invention provides an embodiment: a guide device for a hydraulic cylinder comprises a cylinder body 17, wherein one end of the cylinder body 17 is fixedly connected with a first cylinder cover 1 for sealing one end of the cylinder body 17, the other end of the cylinder body 17 is fixedly connected with a second cylinder cover 5 for sealing the other end of the cylinder body 17, a piston 11 is connected with the center of the cylinder body 17 in a sliding manner and is pushed to move by hydraulic oil, a piston rod 10 is fixedly connected with the center of the piston 11 and transmits movement through the piston rod 10, a first fixed flange plate 2 is fixedly connected with the peripheral side of one end of the cylinder body 17 and is used for being connected with the first cylinder cover 1, a second fixed flange plate 4 is fixedly connected with the peripheral side of the other end of the cylinder body 17 and is used for being connected with the second cylinder cover 5, a first oil port 14 is arranged on one side, close to the second fixed flange plate 4, of the inner wall of the cylinder body 17 and is used for being connected with a hydraulic oil circuit, the guide sleeve is used for being matched with the guide post 9 to guide, the guide post 9 is fixedly connected with the center of the two guide sleeves 3, one end of the guide sleeve is connected with the guide disc 6, the other end of the guide sleeve 3 is inserted into the guide sleeve to guide, the guide disc 6 is fixedly connected with the front ends of the two guide posts 9, the sleeve 16 is fixedly connected with the top end of the piston rod 10 and used for connecting the piston rod 10, the bearing 7 is fixedly connected with the inside of the sleeve 16 to bear radial and axial loads, and the connecting ring 8 is fixedly connected with the center of the bearing 7 and connected with.

The top of guide pillar 9 is the stepped shaft, and the ladder at top is the threaded rod, and threaded rod week side has hexagon socket cap nut 13 through threaded connection, sets up and prevents dust pollution in inside. The tail end of the piston rod 10 is a stepped shaft, the piston 11 is sleeved on the periphery of a first section of step of the stepped shaft, the fixed sleeve 12 is connected on the periphery of a second section of step through threads, a hexagonal nut is arranged on the periphery of a third section of step of the stepped shaft, a groove is formed in the fixed sleeve 12, and the nut is arranged in the groove. The center of the first cylinder cover 1 is provided with a second oil port 15, and the cross section of the second oil port 15 is in a step shape. The center of the second cylinder cover 5 is provided with a guide sleeve and a sealing ring for guiding and preventing hydraulic oil from leaking. The joint of the sleeve 16 and the piston rod 10 is provided with a set screw for fastening connection and preventing rotation. The bearing 7 is an angular contact bearing and receives radial and axial loads.

The working principle is as follows: the sleeve 16 is sleeved on the piston rod 10, the screw is screwed, the bearing 7 is installed at the other end of the sleeve 16, the connecting ring 8 is inserted into the inner ring of the bearing 7, when relative rotation occurs, the relative rotation can occur at the bearing 7 without influencing the piston 11, and the two guide posts 9 and the guide sleeve 3 can be accurately guided to prevent the relative rotation.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. A guiding device for a hydraulic cylinder, comprising a cylinder body (17), characterized in that: one end of the cylinder body (17) is fixedly connected with a first cylinder cover (1), the other end of the cylinder body (17) is fixedly connected with a second cylinder cover (5), the center of the cylinder body (17) is connected with a piston (11) in a sliding manner, the center of the piston (11) is fixedly connected with a piston rod (10), the periphery of one end of the cylinder body (17) is fixedly connected with a first fixed flange (2), the periphery of the other end of the cylinder body (17) is fixedly connected with a second fixed flange (4), one side, close to the second fixed flange (4), of the inner wall of the cylinder body (17) is provided with a first oil port (14), two guide sleeves (3) are fixedly connected between the first fixed flange (2) and the second fixed flange (4), the centers of the two guide sleeves (3) are fixedly connected with guide pillars (9), and the front ends of the two guide pillars (9) are fixedly connected with, the piston rod is characterized in that a sleeve (16) is fixedly connected to the top end of the piston rod (10), a bearing (7) is fixedly connected to the inside of the sleeve (16), and a connecting ring (8) is fixedly connected to the center of the bearing (7).

2. A guide for a hydraulic cylinder according to claim 1, wherein: the top end of the guide pillar (9) is a stepped shaft, the top step is a threaded rod, and the periphery of the threaded rod is connected with an inner hexagonal nut (13) through threads.

3. A guide for a hydraulic cylinder according to claim 1, wherein: the tail end of piston rod (10) is the step shaft, piston (11) have been cup jointed to the first section ladder week side of step shaft, and second section ladder week side has fixed cover (12) through threaded connection, the third section ladder week side of step shaft is provided with hexagon nut, the inside of fixed cover (12) is provided with the recess, and the nut setting is in the recess.

4. A guide for a hydraulic cylinder according to claim 1, wherein: the center of the first cylinder cover (1) is provided with a second oil port (15), and the cross section of the second oil port (15) is in a step shape.

5. A guide for a hydraulic cylinder according to claim 1, wherein: and a guide sleeve and a sealing ring are arranged at the center of the second cylinder cover (5).

6. A guide for a hydraulic cylinder according to claim 1, wherein: the joint of the sleeve (16) and the piston rod (10) is provided with a set screw.

7. A guide for a hydraulic cylinder according to claim 1, wherein: the bearing (7) is an angular contact bearing.