CN210290336U

CN210290336U - Novel piston rod

Info

Publication number: CN210290336U
Application number: CN201920900161.4U
Authority: CN
Inventors: 刘阿宝
Original assignee: Jiangsu Baolijia Auto Parts Co Ltd
Current assignee: Jiangsu Baolijia Auto Parts Co Ltd
Priority date: 2019-06-16
Filing date: 2019-06-16
Publication date: 2020-04-10
Anticipated expiration: 2029-06-16

Abstract

The utility model belongs to the technical field of piston rods, in particular to a novel piston rod, which comprises a piston rod body and a piston, wherein a hollow cavity is arranged in the inner cavity of the piston rod body, the top of the piston rod body is fixedly connected with a connector, the bottom of the piston rod body is vertically and fixedly connected with a bottom connecting column, the bottom of the bottom connecting column is fixedly connected with a fixed plate, the piston is of a cylindrical structure, and a strip-shaped groove is arranged in the central position of the top of the piston; this piston rod is when being connected with the piston, places the fixed plate of the piston rod body bottom in fixed chamber through the bar groove, then behind the rotatory suitable position, through the fixing bolt at piston top and the cooperation of the screw hole on the fixed plate, be connected between the fixed piston rod body and the piston, this piston rod and piston connection mode, convenient to use person on the one hand dismantles it, and on the other hand has also avoided traditional threaded connection mode to take place the phenomenon that the overload is not hard up in the use.

Description

Novel piston rod

Technical Field

The utility model belongs to the technical field of the piston rod, concretely relates to novel piston rod.

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 moving component with frequent movement and high technical requirement, taking the hydraulic oil cylinder as an example and comprising the following components: the cylinder barrel, the piston rod (oil cylinder rod), the piston and the end cover, the processing quality of the cylinder barrel, the piston rod, the piston and the end cover directly influences the service life and the reliability of the whole product, the processing requirement of the piston rod is high, the surface roughness requirement is Ra0.4-0.8 μm, the coaxiality and the wear resistance are strict, the piston rod is processed by rolling, thereby improving the surface corrosion resistance and delaying the generation or the expansion of fatigue cracks, thereby improving the fatigue strength of the oil cylinder rod, through roll forming, a cold hardening layer is formed on the rolled surface, so that the elastic and plastic deformation of the contact surface of the grinding pair is reduced, thereby improving the wear resistance of the surface of the oil cylinder rod, avoiding the burn caused by grinding, reducing the roughness value of the surface after rolling, improving the matching property, meanwhile, the friction damage to the sealing ring or the sealing element when the piston of the oil cylinder rod moves is reduced, and the overall service life of the oil cylinder is prolonged.

The prior art has the following problems:

1. most of the existing piston rods and pistons are in threaded connection, but when the working pressure is high or the load is large and the diameter of the piston rod is small, the threads of the piston rod can be overloaded, and when the vibration of the working machine is large, the nut for fixing the piston can vibrate, so that the connection mode cannot meet the use requirements of people;

2. the existing piston rod is mostly of a solid structure, in the using process, when the length of the rod body is long, the self weight of the piston rod is large, and therefore the using device can waste a part of capacity to push the piston rod, and using requirements cannot be met.

SUMMERY OF THE UTILITY MODEL

To solve the problems set forth in the background art described above. The utility model provides a novel piston rod has avoided traditional threaded connection mode to take place to transship not hard up phenomenon in the use, and manufacturing cost has been practiced thrift on the one hand to hollow structure's the piston rod body simultaneously, and on the other hand also makes this piston rod reduce self weight in the use.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a novel piston rod, includes the piston rod body and piston, cavity has been seted up to piston rod body inner chamber, piston rod body top fixedly connected with connector, the perpendicular fixedly connected with bottom spliced pole in piston rod body bottom, bottom spliced pole bottom fixedly connected with fixed plate, the piston is cylinder type structure, the bar groove has been seted up to piston top central authorities position, bar groove and fixed plate position phase-match, fixed chamber has been seted up to bar bottom of the groove portion, fixed chamber is located inside the piston, there is fixing bolt piston top through threaded connection, fixing bolt's quantity is two, the fixing bolt symmetrical position is in bar groove front side both sides.

Preferably, all through radian processing strip groove inner chamber front side both sides intermediate position, just strip groove and bottom spliced pole structure phase-match.

Preferably, the fixing plate is of a strip-shaped structure, threaded holes are formed in two ends of the top of the fixing plate in a penetrating mode, and the threaded holes are matched with the fixing bolt in position structures.

Preferably, the fixed cavity is of a disc-shaped structure, and the thickness of the fixed cavity is matched with that of the fixed plate.

Preferably, the piston rod body, the bottom connecting column and the fixing plate are of an integrally formed structure.

Preferably, the top of the piston rod body is provided with an air outlet, and the air outlet penetrates through and is connected with the hollow cavity.

Preferably, a sealing ring is fixedly connected to the outer side surface of the piston.

Preferably, the outer surface of the piston rod body is coated with a chromium coating.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the bottom connecting column is vertically and fixedly connected with the bottom of the piston rod body, the bottom of the bottom connecting column is fixedly connected with the fixing plate, the middle position of the top of the piston is provided with the strip-shaped groove, the bottom of the strip-shaped groove is provided with the fixing cavity, the fixing cavity is positioned inside the piston, the top of the piston is connected with the fixing bolt through the thread, the fixing bolt is symmetrically positioned at two sides of the front side of the strip-shaped groove, when the piston rod is connected with the piston, the fixing plate at the bottom of the piston rod body is placed in the fixing cavity through the strip-shaped groove, then after the piston rod is rotated to a proper position, the fixing bolt at the top of the piston is matched with the thread hole on the fixing plate to fix the connection between the piston rod body and the piston, on one hand, the piston rod and piston connecting mode is convenient for a, greatly meeting the use requirements of people.

2. Through having seted up well cavity at the piston rod body inner chamber, the venthole has been seted up at piston rod body top simultaneously, venthole through connection is in well cavity, make this kind of novel piston rod in the production use, manufacturing cost has been practiced thrift on the one hand, on the other hand also makes this kind of piston rod reduce the weight of self in the use, guarantee its normal use, simultaneously when the piston rod body is through heat treatment or high-speed motion, the steam that the cavity produced in the piston rod body can suitably be effluvized to the accessible venthole, further reduce piston rod body self stress, the life of the extension body of rod.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of the pillow body of the present invention;

fig. 2 is a schematic plan view of the present invention;

FIG. 3 is a schematic view of the overall structure of the piston of the present invention;

in the figure: 1. a piston rod body; 2. a piston; 3. a hollow cavity; 4. a connector; 5. a bottom connecting column; 6. a fixing plate; 7. a strip-shaped groove; 8. a fixed cavity; 9. fixing the bolt; 10. a threaded hole; 11. an air outlet; 12. and (5) sealing rings.

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.

Example 1

Referring to fig. 1-3, the present invention provides the following technical solutions: the utility model provides a novel piston rod, including the piston body of rod 1 and piston 2, cavity 3 in 1 inner chamber of the piston body of rod has been seted up, 1 top fixedly connected with connector 4 of the piston body of rod, 1 perpendicular fixedly connected with bottom spliced pole 5 in the bottom of the piston body of rod, 5 bottom fixedly connected with fixed plate 6 of bottom spliced pole, piston 2 is the cylinder type structure, bar groove 7 has been seted up to 2 top central authorities of piston position,

bar groove

7 and 6 position phase-matches of fixed plate, fixed chamber 8 has been seted up to bar groove 7 bottom, fixed chamber 8 is located inside piston 2, there is fixing bolt 9 at 2 tops of piston through threaded connection, fixing bolt 9's quantity is two, fixing bolt 9 symmetrical position is in 7 front.

In this embodiment: the bottom connecting column 5 is vertically and fixedly connected to the bottom of the piston rod body 1, the bottom of the bottom connecting column 5 is fixedly connected with the fixing plate 6, the central position of the top of the piston 2 is provided with the strip-shaped groove 7, the bottom of the strip-shaped groove 7 is provided with the fixing cavity 8, the fixing cavity 8 is positioned in the piston 2, the top of the piston 2 is connected with the fixing bolt 9 through threads, the fixing bolt 9 is symmetrically positioned at two sides of the front side of the strip-shaped groove 7, when the piston 2 is connected with the piston 2, the fixing plate 6 at the bottom of the piston rod body 1 is placed in the fixing cavity 8 through the strip-shaped groove 7, then after rotating to a proper position, the fixing bolt 9 at the top of the piston 2 is matched with the threaded hole 10 on the fixing plate 6, the piston rod body 1 is connected with the piston 2, the hollow cavity 3 is arranged in, the venthole 11 through connection is in well cavity 3, makes 2 poles of this kind of novel piston in the production use, has practiced thrift manufacturing cost on the one hand, and on the other hand also makes 2 poles of this kind of piston reduce the weight of self in the use, when the piston body of rod 1 is when through thermal treatment or high-speed motion, the steam that cavity 3 produced in the inside cavity of piston body of rod 1 can suitably be effluvized to accessible venthole 11, further reduces the piston body of rod 1 self stress, the life of the extension body of rod.

Specifically, the middle positions of two sides of the front side of the inner cavity of the strip-shaped groove 7 are subjected to radian treatment, and the strip-shaped groove 7 is structurally matched with the bottom connecting column 5; when guaranteeing that fixed plate 6 gets into fixed chamber 8, bottom spliced pole 5 can satisfy the user demand at the adjustment of 7 internal rotations in bar groove.

Specifically, the fixing plate 6 is of a strip-shaped structure, threaded holes 10 are formed in two ends of the top of the fixing plate 6 in a penetrating mode, and the threaded holes 10 are matched with the fixing bolts 9 in position structures; after the fixed plate 6 enters the fixed cavity 8 and can rotate to a proper position, the connection between the piston rod body 1 and the piston 2 can be further fixed through the cooperation of the fixing bolt 9 and the threaded hole 10.

Specifically, the fixed cavity 8 is of a disc-shaped structure, and the thickness of the fixed cavity 8 is matched with that of the fixed plate 6; guarantee that fixed plate 6 can rotate to suitable position after getting into fixed chamber 8, satisfy the user demand.

Specifically, the piston rod body 1, the bottom connecting column 5 and the fixing plate 6 are of an integrally formed structure; the firmness of the whole piston rod is ensured.

Specifically, the top of the piston rod body 1 is provided with an air outlet 11, and the air outlet 11 penetrates through and is connected with the hollow cavity 3; when the piston rod body 1 is subjected to heat treatment or moves at a high speed, hot air generated in the hollow cavity 3 in the piston rod body 1 can be properly dispersed through the air outlet 11, the self stress of the piston rod body 1 is further reduced, and the service life of the rod body is prolonged.

Specifically, the outer side surface of the piston 2 is fixedly connected with a sealing ring 12; the service life of the piston rod is met.

Specifically, the outer side surface of the piston rod body 1 is coated with a chromium coating; further improve the resistance to corrosion of piston rod surface, satisfy the user demand.

The utility model discloses a theory of operation and use flow: firstly, the inside of the piston rod body 1 of the piston 2 rod is of a hollow structure, on one hand, the production cost is saved, on the other hand, the weight of the piston 2 rod is reduced in the using process, meanwhile, the top of the piston rod body 1 is provided with an air outlet hole 11, the air outlet hole 11 is connected with the hollow cavity 3 in a penetrating way, when the piston rod body 1 is subjected to heat treatment or high-speed movement, hot air generated in the hollow cavity 3 in the piston rod body 1 can be properly dispersed through the air outlet hole 11, the self stress of the piston rod body 1 is further reduced, the service life of the rod body is prolonged, then a fixing plate 6 at the bottom of the piston rod body 1 of the novel piston 2 rod is placed in a fixing cavity 8 in the piston 2 through a strip-shaped groove 7, the middle positions of two sides of the front side of the inner cavity of the strip-shaped groove 7 are subjected to radian treatment, make screw hole 10 and the 2 top fixing bolt 9 position matching of piston on the fixed plate 6, then further fix the piston rod body 1 together with piston 2 through screw hole 10 and fixing bolt 9 mating reaction, this 2 pole of piston and 2 connected modes, convenient to use person dismantles it on the one hand, and on the other hand has also avoided traditional threaded connection mode to take place to transship not hard up phenomenon in the use, greatly satisfies people's user demand.

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 may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a novel piston rod, includes the piston body of rod (1) and piston (2), its characterized in that: cavity (3) have been seted up to the piston rod body (1) inner chamber, piston rod body (1) top fixedly connected with connector (4), the perpendicular fixedly connected with bottom spliced pole (5) in piston rod body (1) bottom, bottom spliced pole (5) bottom fixedly connected with fixed plate (6), piston (2) are the cylinder type structure, bar groove (7) have been seted up to piston (2) top central point position, bar groove (7) and fixed plate (6) position phase-match, fixed chamber (8) have been seted up to bar groove (7) bottom, fixed chamber (8) are located inside piston (2), there are fixing bolt (9) at piston (2) top through threaded connection, the quantity of fixing bolt (9) is two, fixing bolt (9) symmetry is located bar groove (7) front side both sides.

2. A novel piston rod according to claim 1 wherein: the middle positions of the two sides of the front side of the inner cavity of the strip-shaped groove (7) are all subjected to radian treatment, and the strip-shaped groove (7) is structurally matched with the bottom connecting column (5).

3. A novel piston rod according to claim 1 wherein: the fixing plate (6) is of a strip-shaped structure, threaded holes (10) are formed in two ends of the top of the fixing plate (6) in a penetrating mode, and the threaded holes (10) are matched with the fixing bolts (9) in position structures.

4. A novel piston rod according to claim 1 wherein: the fixed cavity (8) is of a disc-shaped structure, and the thickness of the fixed cavity (8) is matched with that of the fixed plate (6).

5. A novel piston rod according to claim 1 wherein: the piston rod body (1), the bottom connecting column (5) and the fixing plate (6) are of an integrally formed structure.

6. A novel piston rod according to claim 1 wherein: the piston rod body (1) top has seted up venthole (11), venthole (11) run through and connect in well cavity (3).

7. A novel piston rod according to claim 1 wherein: and a sealing ring (12) is fixedly connected to the outer side surface of the piston (2).

8. A novel piston rod according to claim 1 wherein: the outer side surface of the piston rod body (1) is coated with a chromium coating.