CN215634089U

CN215634089U - Piston rod for hydraulic cylinder

Info

Publication number: CN215634089U
Application number: CN202121398558.1U
Authority: CN
Inventors: 杨文江; 杨德春; 张同连
Original assignee: Tianjin Jinling Yunzhi Machinery Co ltd
Current assignee: Tianjin Jinling Yunzhi Machinery Co ltd
Priority date: 2021-06-23
Filing date: 2021-06-23
Publication date: 2022-01-25
Anticipated expiration: 2031-06-23

Abstract

The utility model discloses a piston rod for a hydraulic cylinder, which comprises a piston rod, wherein one end of the piston rod is provided with a connecting convex seat, the top of the connecting convex seat is provided with a lifting lug shaft, the top of the lifting lug shaft is fixedly connected with a shaft sleeve, the outer surface of the other end of the piston rod is cut with a first bayonet and a second bayonet, and the diameter of the first bayonet is larger than that of the second bayonet. According to the utility model, the connecting boss can move in the buffer cavity, so that a certain buffer effect can be formed between the connecting boss and the lifting lug shaft by the second spring and the first spring, the instantaneously generated force can be removed, the piston rod can be better protected, the structure is simple, the piston rod can be protected by stress, and the service life is prolonged.

Description

Piston rod for hydraulic cylinder

Technical Field

The utility model relates to the technical field of hydraulic cylinders, in particular to a piston rod for a hydraulic cylinder.

Background

The piston rod is a connecting component for supporting the piston to do work, most of the piston rod is applied to an oil cylinder and an air cylinder movement executing component, and the piston rod is a movement component with frequent movement and high technical requirements. Taking a hydraulic oil cylinder as an example, the hydraulic oil cylinder comprises: the cylinder barrel, the piston rod (oil cylinder rod), the piston and the end cover.

Now relate to a piston rod for pneumatic cylinder, there is certain drawback in current piston rod for pneumatic cylinder, because the pneumatic cylinder often can receive the dynamics that produces in the twinkling of an eye to can lead to causing the extrusion deformation to the piston rod of pneumatic cylinder, and current pneumatic cylinder can not protect the piston rod, thereby influences the life of pneumatic cylinder.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides a piston rod for a hydraulic cylinder.

In order to achieve the purpose, the utility model adopts the following technical scheme: the utility model provides a piston rod for pneumatic cylinder, includes the piston rod, the one end of piston rod is provided with connects the convex seat, the top of connecting the convex seat is provided with hangs the trunnion, hang the top fixedly connected with axle sleeve of trunnion, the other end surface cutting of piston rod has first bayonet socket and second bayonet socket, and the diameter of first bayonet socket is greater than the diameter of second bayonet socket.

Furthermore, the interior of the suspension lug shaft is provided with a buffer cavity and a jack which are connected with the connection boss in an embedded sliding manner, and the buffer cavity is concentrically connected with the jack.

Further, the inner wall fixedly connected with of jack is two stoppers of mutual symmetry, the surface of connecting the boss seted up with stopper sliding connection's spacing groove.

Furthermore, the inner wall central axis position fixedly connected with buffer rod of cushion chamber, connect the top of boss and seted up the buffering slot with the buffer rod embedding is connected, the buffer rod inserts the one end of buffering slot with connect the common fixedly connected with second spring between the boss, the common fixedly connected with first spring housing between trunnion and the connection boss is established the one end of buffer rod.

Furthermore, the bottom central point of connecting the convex seat puts and has seted up the mounting groove with the one end embedding of piston rod is connected, be provided with hexagon nut jointly between connecting convex seat and the piston rod, the one end of piston rod corresponds hexagon nut's position has seted up the thread groove, hexagon nut runs through connect convex seat and thread groove threaded connection.

Furthermore, the inner wall of the mounting groove is fixedly connected with a positioning block, and the top of one end of the piston rod is provided with a positioning groove embedded and connected with the positioning block.

Furthermore, the outer surface of the shaft sleeve is provided with a fixing hole.

The utility model has the beneficial effects that:

when the piston rod for the hydraulic cylinder is used, the connecting boss can move in the buffer cavity through the connecting boss, the buffer cavity, the second spring and the first spring, so that a certain buffer effect can be achieved between the connecting boss and the suspension trunnion through the second spring and the first spring, the force generated instantly can be removed, the piston rod can be better protected, the structure is simple, the piston rod can be protected by stress, and the service life is prolonged.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is an enlarged view of A of FIG. 2 according to the present invention;

fig. 4 is an enlarged view of B of fig. 2 according to the present invention.

Illustration of the drawings:

1. a piston rod; 101. a first bayonet; 102. a second bayonet; 103. a thread groove; 2. connecting the convex base; 201. a buffer slot; 202. mounting grooves; 3. a trunnion is hung; 301. a buffer chamber; 302. a buffer rod; 303. a jack; 4. a hexagonal nut; 5. a shaft sleeve; 501. a fixing hole; 6. a second spring; 7. a first spring; 8. a limiting groove; 9. a limiting block; 10. positioning blocks; 11. and (6) positioning a groove.

Detailed Description

Fig. 1 to 4 show, relate to a piston rod for pneumatic cylinder, including piston rod 1, the one end of piston rod 1 is provided with connects boss 2, connects the top of boss 2 and is provided with suspension trunnion 3, and suspension trunnion 3's top fixedly connected with axle sleeve 5, the other end surface of piston rod 1 cuts first bayonet 101 and second bayonet 102 to the diameter of first bayonet 101 is greater than the diameter of second bayonet 102.

When using the piston rod for the pneumatic cylinder, during the pneumatic cylinder atress, axle sleeve 5 applys the dynamics to lifting pin axle 3, lifting pin axle 3 can be through connecting boss 2 and applys the dynamics to piston rod 1, during the atress in the twinkling of an eye, it can move about in the inside of cushion chamber 301 to connect boss 2, thereby make second spring 6 and first spring 7 can make and connect boss 2 and lifting pin axle and have certain buffering effect between 3, thereby can unload the dynamics that produces in the twinkling of an eye, can carry out better protection to piston rod 1, moreover, the steam generator is simple in structure, can carry out the atress protection to piston rod 1, thereby improve life.

In the further scheme, the inside of the suspension shaft 3 is provided with a buffer cavity 301 and a jack 303 which are connected with the connection boss 2 in an embedded sliding manner, and the buffer cavity 301 and the jack 303 are connected concentrically, so that the connection boss 2 is convenient to limit and move.

In a further scheme, the inner wall of the jack 303 is fixedly connected with two mutually symmetrical limiting blocks 9, and the outer surface of the connecting boss 2 is provided with a limiting groove 8 which is connected with the limiting blocks 9 in a sliding manner, so that the connecting boss 2 can move at a fixed position.

In the further scheme, inner wall central axis position fixedly connected with buffer beam 302 of buffer chamber 301, the top of connecting boss 2 has been seted up and has been cushioned slot 201 and buffer beam 302 embedding and be connected, buffer beam 302 inserts the one end of cushioning slot 201 and is connected common fixedly connected with second spring 6 between the boss 2, the one end at buffer beam 302 is established to the first spring 7 cover of common fixedly connected with between trunnion axle 3 and the connection boss 2, first spring 7 and second spring 6 can make trunnion axle 3 and be connected and have certain buffering effect between the boss 2, thereby can unload power to the dynamics that produces in the twinkling of an eye.

In the further scheme, the bottom center position of connecting boss 2 is provided with the one end embedding of mounting groove 202 and piston rod 1 and is connected, is connected and is provided with hexagon nut 4 jointly between boss 2 and the piston rod 1, and threaded groove 103 has been seted up to the position that the one end of piston rod 1 corresponds hexagon nut 4, and hexagon nut 4 through connection boss 2 and threaded groove 103 threaded connection can make piston rod 1 and connecting boss 2 fixed mounting, are convenient for simultaneously carry out the dismouting change.

In the further scheme, the inner wall fixedly connected with locating piece 10 of mounting groove 202, the constant head tank 11 of being connected with locating piece 10 embedding is seted up at the top of 1 one end of piston rod, can be convenient for piston rod 1 and connect boss 2 to carry out the butt joint of fixing a position fast.

In a further scheme, the outer surface of the shaft sleeve 5 is provided with a fixing hole 501 for installing and fixing a movable device.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a piston rod for pneumatic cylinder, includes piston rod (1), its characterized in that: the improved structure of the piston rod is characterized in that a connecting boss (2) is arranged at one end of the piston rod (1), a hanging lug shaft (3) is arranged at the top of the connecting boss (2), a shaft sleeve (5) is fixedly connected to the top of the hanging lug shaft (3), a first bayonet (101) and a second bayonet (102) are cut on the outer surface of the other end of the piston rod (1), and the diameter of the first bayonet (101) is larger than that of the second bayonet (102).

2. The piston rod for a hydraulic cylinder according to claim 1, characterized in that: the interior of the lifting lug shaft (3) is provided with a buffer cavity (301) and a jack (303) which are connected with the connecting boss (2) in an embedded sliding manner, and the buffer cavity (301) is connected with the jack (303) in a concentric manner.

3. The piston rod for a hydraulic cylinder according to claim 2, characterized in that: the inner wall fixedly connected with of jack (303) two stopper (9) of mutual symmetry, connect the surface of boss (2) seted up with stopper (9) sliding connection's spacing groove (8).

4. A piston rod for a hydraulic cylinder according to any one of claims 1 to 3, characterized in that: inner wall central axis position fixedly connected with buffer beam (302) of cushion chamber (301), connect the top of boss (2) seted up buffer slot (201) with buffer beam (302) embedding is connected, buffer beam (302) insert the one end of buffer slot (201) with connect common fixedly connected with second spring (6) between boss (2), hang the first spring of fixedly connected with (7) cover between trunnion (3) and the connection boss (2) and establish the one end of buffer beam (302).

5. The piston rod for a hydraulic cylinder according to claim 1, characterized in that: the bottom center of connecting convex seat (2) puts and has seted up mounting groove (202) with the one end embedding of piston rod (1) is connected, be provided with hexagon nut (4) between connecting convex seat (2) and piston rod (1) jointly, the one end of piston rod (1) corresponds thread groove (103) have been seted up to the position of hexagon nut (4), hexagon nut (4) run through connect convex seat (2) and thread groove (103) threaded connection.

6. The piston rod for a hydraulic cylinder according to claim 5, wherein: the inner wall of the mounting groove (202) is fixedly connected with a positioning block (10), and the top of one end of the piston rod (1) is provided with a positioning groove (11) which is connected with the positioning block (10) in an embedded mode.

7. The piston rod for a hydraulic cylinder according to claim 1, characterized in that: the outer surface of the shaft sleeve (5) is provided with a fixing hole (501).