CN218062886U

CN218062886U - Plunger rod

Info

Publication number: CN218062886U
Application number: CN202121345031.2U
Authority: CN
Inventors: 吴志刚
Original assignee: Changzhou Kaifeipuling Machinery Co ltd
Current assignee: Changzhou Kaifeipuling Machinery Co ltd
Priority date: 2021-06-16
Filing date: 2021-06-16
Publication date: 2022-12-16
Anticipated expiration: 2031-06-16

Abstract

The utility model discloses a plunger rod, including the body of rod, body of rod one end and fixed block one end fixed connection, the fixed block is close to body of rod one end inboard and first compression spring one end fixed connection, the first compression spring other end and expansion plate one end fixed connection, the utility model discloses in, mutually support through expansion plate and first compression spring and realize carrying out first step alleviating to the impact force that produces in the twinkling of an eye, inside the rethread slide bar takes the impact force to the dashpot, the inside buffer block of rethread dashpot is mutually supported with third compression spring and is realized carrying out further alleviating to the impact force to effectual impact force that brings inertia carries out one and alleviates, such a structure can make the body of rod have a sufficient space and reaction force to cushion it under the condition that receives impact force in the twinkling of an eye, thereby the impact force that prevents inertia production makes the body of rod cause the condition of damage to take place, fine life who increases the stopper rod.

Description

Plunger rod

Technical Field

The utility model relates to a stopper rod technical field specifically is a plunger rod.

Background

The piston rod is a connecting part for connecting the oil cylinder and a product, most of the piston rod is used for supporting the piston in the oil cylinder and the hydraulic cylinder to do work, the piston rod is a moving part which has frequent movement and higher technical requirements, and the quality of the piston rod directly influences the service life of the product and the working reliability.

The general cock stem all drives its removal through the piston, and the rethread cock stem drives and connects the product and move, but when the piston drove the cock stem and removes work, the piston round trip movement in the cylinder body of hydro-cylinder, can stop the removal rapidly after the piston contradicts the cylinder body bottom, and the cock stem continues to drive the product and removes under inertial effect, and at this in-process, the junction between cock stem and the product damages easily under the effect of impact in the twinkling of an eye to influence the life of cock stem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a plunger rod, with the problem that proposes in solving above-mentioned background art, general cock stem all drives its removal through the piston, the rethread cock stem drives and connects the product and remove, but when the piston drives cock stem removal work, the piston round trip movement in the cylinder body of hydro-cylinder, the piston can stop rapidly after conflicting the cylinder body bottom and remove, the cock stem is under inertial effect, continue to drive the product and remove, at this in-process, junction between cock stem and the product damages easily under the effect of assaulting in the twinkling of an eye, thereby influence the life of cock stem.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a plunger rod, includes the body of rod, body of rod one end and fixed block one end fixed connection, the fixed block is close to body of rod one end inboard and first compression spring one end fixed connection, the first compression spring other end and expansion plate one end fixed connection, the expansion plate is kept away from first compression spring one end and telescopic link one end fixed connection, the expansion plate is kept away from to the telescopic link and is extended fixed block and limiting plate one end fixed connection, the expansion plate is close to first compression spring one end and a plurality of slide bar one end fixed connection, and is a plurality of expansion plate one end is kept away from to the slide bar, and is a plurality of inside all inserting with the fixture block and establishing and being connected, and is a plurality of the fixture block is kept away from draw-in groove one end all with slide plate one end fixed connection, and is a plurality of slide plate all with the inside sliding connection of spout, and a plurality of the spout is all seted up at the inboard both ends of fixed block bottom, and a plurality of slide plate is kept away from fixture block one end all with second compression spring one end fixed connection, and a plurality of inside the slide bar is kept away from slide plate one end all with the inboard one end fixed connection of spout, a plurality of the slide bar bottom runs through and is seted up and is connected a plurality of buffer block, a plurality of the buffer block, and a plurality of buffer block is all kept away from the buffer block inside the buffer block one end and a plurality of buffer block is connected the buffer block outside the buffer block one end the buffer block, and the buffer block is connected the buffer block.

As a further aspect of the present invention: one end, far away from the first compression spring, of the expansion plate is in contact with the plurality of abutting blocks, the plurality of abutting blocks are all installed on the inner side of the opening of the fixing block, and therefore the expansion plate can be limited through the abutting blocks, and the whole position of the expansion plate is fixed.

As a further aspect of the present invention: the rubber blocks are arranged at one ends of the supporting blocks, which are close to the telescopic plate, so that the vibration generated when the telescopic plate rises and hits the supporting blocks can be well relieved through the rubber blocks, and a good protection effect is achieved.

As a further aspect of the present invention: the limiting plate is close to telescopic link one end and installs the rubber circle, just so can be fine through the rubber circle alleviate the vibrations that limiting plate and fixed block produced when contacting each other, played fine safeguard effect.

As a further aspect of the present invention: the limiting plate is kept away from telescopic link one end and is installed first screwed joint, just so can come the whole body of rod and product reciprocal anchorage together through first screwed joint, makes things convenient for the fixed mounting of the later stage body of rod.

As a further aspect of the present invention: the body of rod is kept away from fixed block one end and is installed fixed joint, fixed joint outer wall and piston inner wall sliding connection, fixed joint keeps away from body of rod one end and second screwed joint one end fixed connection, second screwed joint is rotated with the bolt and is connected, just so can mutually support through bolt and second screwed joint and fix the piston on fixed joint, makes things convenient for the fixed mounting of later stage piston.

As the utility model discloses further scheme again: a plurality of the connecting groove notch position corresponds to the buffer groove notch position, so that the sliding rod can be ensured to extend to the inside of the buffer groove from the inside of the connecting groove, and the effect of buffering the impact force is achieved.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses in, mutually support through expansion plate and first compression spring and realize carrying out the first step to the impact force that produces in the twinkling of an eye and alleviate, the rethread slide bar takes the impact force to the dashpot inside, the inside buffer block of rethread dashpot is mutually supported with third compression spring and is realized carrying out further alleviating to the impact force, thereby the effectual impact force that brings inertia carries out one and alleviates, such a structure can make the body of rod have an enough space and reaction force to cushion it under the condition that receives impact force in the twinkling of an eye, thereby prevent that the impact force that inertia produced from making the body of rod cause the condition of damage to take place, fine increase the life of gag lever post.

The beneficial effects of the utility model are that: the utility model discloses in, be provided with the rubber circle bottom the limiting plate, be provided with the block rubber at support piece and expansion plate junction, through the vibrations that the alleviating limiting plate that the rubber circle can be fine produced when contacting each other with the fixed block, the rethread block rubber can be fine alleviate the expansion plate and rise to hit the vibrations that produce on supporting the piece to play fine protecting effect.

Drawings

Fig. 1 is a schematic view of the overall structure of a plunger rod of the present invention;

fig. 2 is a schematic view of the overall cross-sectional structure of a plunger rod according to the present invention;

fig. 3 is an enlarged schematic view of a portion a of the plunger rod of fig. 2 according to the present invention.

In the figure: 1. a rod body; 2. a fixed block; 3. a first compression spring; 4. a retractable plate; 5. a resisting block; 6. a rubber block; 7. a telescopic rod; 8. a limiting plate; 9. a rubber ring; 10. a first threaded joint; 11. a slide bar; 12. a card slot; 13. a clamping block; 14. a slide plate; 15. a chute; 16. a second compression spring; 17. connecting grooves; 18. a buffer tank; 19. a buffer block; 20. a third compression spring; 21. fixing the joint; 22. a second threaded joint; 23. a piston; 24. and (4) bolts.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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.

Referring to FIGS. 1-3, in an embodiment of the present invention, a plunger rod comprises a rod body 1, one end of the rod body 1 is fixedly connected to one end of a fixed block 2, the fixed block 2 is fixedly connected to one end of a first compression spring 3 inside the end close to the rod body 1, the other end of the first compression spring 3 is fixedly connected to one end of a retractable plate 4, the end of the retractable plate 4 remote from the first compression spring 3 is fixedly connected to one end of a retractable rod 7, the end of the retractable rod 7 remote from the retractable plate 4 extends out of the fixed block 2 and is fixedly connected to one end of a limiting plate 8, the end of the retractable plate 4 close to the first compression spring 3 is fixedly connected to one end of a plurality of slide bars 11, the end of the plurality of slide bars 11 remote from the retractable plate 4 is provided with a plurality of notches 12, the interiors of the plurality of notches 12 are inserted into and connected to fixture blocks 13, the ends of the plurality of fixture blocks 13 remote from the notches 12 are fixedly connected to one end of a slide plate 14, the plurality of slide plates 14 are slidably connected to the interiors of slide grooves 15, the ends are provided at the ends of the inner ends of the slide grooves 15, the ends are provided with grooves at the ends of the inner ends of the fixed grooves, the plurality of the slide bars 15, the ends of the slide bars 14 are provided with grooves 18, the grooves, the ends of the plurality of the slide bars 14 remote from the inner ends of the buffer blocks 18, the buffer grooves 18 are connected to the buffer grooves, the buffer blocks 18, the inner ends of the buffer grooves 18 grooves, the buffer grooves 18 grooves, the buffer blocks are connected to the buffer grooves 18, the inner ends of the buffer blocks 18 grooves, the buffer grooves 18 ends of the buffer grooves, the buffer grooves 18 grooves 19, the buffer grooves are connected to the buffer grooves, the buffer blocks, the inner ends of the buffer blocks are connected to the buffer grooves 18 grooves, the buffer grooves 18 grooves 19, a plurality of buffer grooves 18 are arranged inside the rod body 1.

One end of the expansion plate 4, which is far away from the first compression spring 3, is in contact with the plurality of abutting blocks 5, and the plurality of abutting blocks 5 are arranged on the inner side of the opening of the fixed block 2, so that the expansion plate 4 can be limited through the abutting blocks 5, and the integral position of the expansion plate 4 is fixed; the rubber blocks 6 are arranged at one ends of the plurality of abutting blocks 5, which are close to the telescopic plate 4, so that the vibration generated when the telescopic plate 4 rises and collides with the abutting blocks 5 can be well relieved through the rubber blocks 6, and a good protection effect is achieved; the rubber ring 9 is arranged at one end, close to the telescopic rod 7, of the limiting plate 8, so that vibration generated when the limiting plate 8 is in contact with the fixed block 2 can be well relieved through the rubber ring 9, and a good protection effect is achieved; a first threaded joint 10 is arranged at one end, far away from the telescopic rod 7, of the limiting plate 8, so that the whole rod body 1 and a product can be fixed together through the first threaded joint 10, and the fixed installation of the rod body 1 in the later period is facilitated; a fixed joint 21 is arranged at one end, far away from the fixed block 2, of the rod body 1, the outer wall of the fixed joint 21 is connected with the inner wall of the piston 23 in a sliding mode, one end, far away from the rod body 1, of the fixed joint 21 is fixedly connected with one end of a second threaded joint 22, the second threaded joint 22 is rotatably connected with a bolt 24, and therefore the piston 23 can be fixed on the fixed joint 21 through the mutual matching of the bolt 24 and the second threaded joint 22, and the later-period fixed installation of the piston 23 is facilitated; the notch positions of the connecting grooves 17 correspond to the notch positions of the buffer grooves 18, so that the sliding rods 11 can be ensured to extend from the inside of the connecting grooves 17 to the inside of the buffer grooves 18, and the effect of buffering the impact force is achieved.

The utility model discloses a theory of operation is: when the utility model is used, if the piston 23 drives the stopper rod to stop, the stopper rod continues to drive the product to move under the action of inertia, in the process, the joint between the stopper rod and the product is impacted instantly, and the driving impact force is larger, the clamping block 13 can be stressed to slide in the chute 15 through the sliding plate 14 to separate from the inside of the clamping groove 12, and the second compression spring 16 is compressed and stored energy to be clamped into the inside of the clamping groove 12 again at any time, when the clamping block 13 is separated from the inside of the clamping groove 12, the limiting plate 8 is pressed by the impact force, the limiting plate 8 drives the telescopic rod 7 to press down, the telescopic rod 7 drives the telescopic plate 4 to press down in the inside of the fixed block 2 and compress and store energy of the first compression spring 3, thereby performing preliminary buffering on the impact force, the sliding rod 11 is driven to move down in the inside of the connecting groove 17 while the telescopic plate 4 is pressed down, the slide rod 11 moves until the inside of the buffer groove 18 and contacts with the top of the buffer block 19, so that the slide rod 11 presses the buffer block 19 downwards, the buffer block 19 is pressed down in the buffer groove 18 and compresses and stores energy by the third compression spring 20, so as to further buffer the impact force, after the impact force caused by inertia is relieved, the slide rod 11 is lifted and reset by the first compression spring 3 and the third compression spring 20 at the same time, the slide rod 11 is lifted until the expansion plate 4 contacts with the abutting block 5, the position of the fixture block 13 corresponds to the position of the clamping groove 12, the fixture block 13 is rebounded by the second compression spring 16 and clamped into the clamping groove 12 again, so that the whole position of the slide rod 11 is fixed for buffering the next impact force, and the structure can ensure that the rod body 1 has enough space and reacting force to buffer the rod body under the condition of instant impact force, thereby prevent that the impact force that inertia produced from making the body of rod 1 cause the condition of damage to take place, fine increase the life of gag lever post.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A plunger rod comprising a rod body (1), characterized in that: body of rod (1) one end and fixed block (2) one end fixed connection, fixed block (2) are close to body of rod (1) one end inboard and first compression spring (3) one end fixed connection, first compression spring (3) other end and expansion plate (4) one end fixed connection, expansion plate (4) are kept away from first compression spring (3) one end and telescopic link (7) one end fixed connection promptly, expansion plate (4) one end is kept away from in telescopic link (7) and is extended fixed block (2) and limiting plate (8) one end fixed connection, expansion plate (4) are close to first compression spring (3) one end and a plurality of slide bar (11) one end fixed connection, and are a plurality of expansion plate (4) one end is kept away from in slide bar (11) slide bar (12) inside all with fixture block (13) insert establish connection, a plurality of fixture block (13) keep away from draw-in groove (12) one end all with slide (14) one end fixed connection, a plurality of slide plate (14) inside sliding connection with spout (15) one end, a plurality of slide plate (15) one end is all with slide bar (15) inside sliding connection, slide plate (15) one end is all established at slide bar (15) bottom and slide bar (15) one end 16) are kept away from first compression spring (16) one end and second compression spring (16) inboard and second compression spring (16) one end fixed connection Connect, fixed block (2) bottom is run through and has been seted up a plurality of spread grooves (17), a plurality of dashpot (18) have been seted up to body of rod (1) inside telescopic plate (4) one end is kept away from in slide bar (11) all extend to inside of dashpot (18) through spread groove (17), and is a plurality of slide bar (11) are close to inside one end of dashpot (18) and all touch with buffer block (19) one end and connect, and are a plurality of buffer block (19) outer wall all with buffer groove (18) inner wall sliding connection, it is a plurality of buffer block (19) are kept away from a plurality of slide bar (11) one end and all with third compression spring (20) one end fixed connection, and are a plurality of buffer block (19) one end is kept away from in third compression spring (20) all with inboard one end fixed connection of dashpot (18).

2. A stopper rod as claimed in claim 1, wherein: one end of the expansion plate (4) far away from the first compression spring (3) is in contact with the plurality of supporting blocks (5), and the plurality of supporting blocks (5) are all installed on the inner side of the opening of the fixing block (2).

3. A stopper rod as claimed in claim 2, wherein: and one end of each of the plurality of abutting blocks (5) close to the expansion plate (4) is provided with a rubber block (6).

4. A stopper rod as claimed in claim 1, wherein: and one end of the limiting plate (8) close to the telescopic rod (7) is provided with a rubber ring (9).

5. A stopper rod as claimed in claim 1, wherein: and a first threaded joint (10) is installed at one end, far away from the telescopic rod (7), of the limiting plate (8).

6. A stopper rod as claimed in claim 1, wherein: the utility model discloses a bolt, including the body of rod, fixed block (2), fixed joint (21) are installed to the body of rod (1) one end of keeping away from fixed block (2), fixed joint (21) outer wall and piston (23) inner wall sliding connection, body of rod (1) one end and second screwed joint (22) one end fixed connection are kept away from in fixed joint (21), second screwed joint (22) rotate with bolt (24) and are connected.

7. A stopper rod as claimed in claim 1, wherein: the notch positions of the connecting grooves (17) correspond to the notch positions of the buffer grooves (18).