CN215109436U

CN215109436U - Anti-abrasion precise plunger variable pump piston rod

Info

Publication number: CN215109436U
Application number: CN202120680207.3U
Authority: CN
Inventors: 阮思群; 田潇雅
Original assignee: WENLING DAZHONG PRECISION MACHINERY CO Ltd
Current assignee: WENLING DAZHONG PRECISION MACHINERY CO Ltd
Priority date: 2021-04-02
Filing date: 2021-04-02
Publication date: 2021-12-10
Anticipated expiration: 2031-04-02

Abstract

The utility model belongs to the technical field of novel materials, in particular to an anti-abrasion precision plunger variable pump piston rod, which comprises a piston rod, a connecting ring, a positioning hole and a fixed sleeve, wherein one end of the piston rod is fixedly connected with the connecting ring, the connecting ring is provided with a connecting hole, one end of the piston rod, which is far away from the connecting ring, is provided with a cavity, the cavity is provided with a positioning hole near the center of the inner wall of one side of the connecting ring, the positioning hole is fixedly connected with a positioning pin, the piston rod is provided with a piston groove, and the piston rod is externally provided with a protective sleeve; the utility model discloses when piston rod production, choose for use HES-03002 material to accomplish through the casting according to international ASTM A247 standard for the piston rod not only tensile strength reaches 600MPa, and yield strength reaches 400MPa, and the percentage elongation reaches 6%, still improves part abrasionproof decreases performance and precision greatly.

Description

Anti-abrasion precise plunger variable pump piston rod

Technical Field

The utility model relates to a novel material technical field specifically is an accurate plunger variable pump piston rod of abrasionproof decreases.

Background

The piston rod is a connecting member that supports the movement of the piston.

At present, piston rods are mostly applied to workpieces such as cylinders, pump bodies and the like and are moving parts with frequent movement and high technical requirements, but the wear resistance and the precision of parts are poor due to the fact that materials are selected nonstandard and the processing mode is poor during production of the existing piston rods; therefore, the abrasion-proof precision plunger variable pump piston rod is provided aiming at the problems.

SUMMERY OF THE UTILITY MODEL

In order to compensate the not enough of prior art, solve traditional piston rod and lead to the all relatively poor problem of abrasionproof loss performance and precision because of selection material and processing mode, the utility model provides an accurate plunger variable pump piston rod of abrasionproof loss.

The utility model provides a technical scheme that its technical problem adopted is: the utility model discloses an anti-abrasion precision plunger variable pump piston rod, including piston rod, go-between, locating hole and fixed cover, the one end of piston rod is fixedly connected with the go-between, seted up the connecting hole on the go-between, the one end that the piston rod deviates from the go-between has seted up the cavity, the cavity is close to one side inner wall center of go-between and has seted up the locating hole, the locating hole is fixedly connected with the locating pin, the piston rod has seted up the piston groove, the piston rod is equipped with the protective sheath outward; the piston rod is protected through the protective sleeve, and abrasion of the piston rod in the transportation process is avoided.

Preferably, the inner cavity of the protective sleeve is provided with a clamping mechanism, the top of the right end face of the protective sleeve is fixedly connected with a fixed sleeve, the left end face of the protective sleeve is provided with a through hole, the fixed sleeve is connected with one end of a positioning rod in a sliding manner, the other end of the positioning rod penetrates through the connecting hole and the through hole and extends to the outer side of the protective sleeve, and the bottom end face of the inner cavity of the protective sleeve is provided with a shock absorption pad; the bradyseism pad that is equipped with through protective sheath inner chamber bottom can reduce the vibrations that the piston rod received in the transportation, runs through the cooperation of go-between and fixed cover through the locating lever and carries out spacing fixed to the piston rod, avoids piston rod and protective sheath touching wearing and tearing.

Preferably, the clamping framework comprises a compression spring, a first arc-shaped plate, a second arc-shaped plate and a screw rod, the right end face of the inner cavity of the protective sleeve is fixedly connected with the two compression springs, and the other end of each compression spring is fixedly connected with one side of the first arc-shaped plate; the first arc strip is tightly attached to the piston groove conveniently through the elastic potential energy of the compression spring.

Preferably, one side end face of the first arc-shaped plate, which is far away from the compression spring, is fixedly connected with a first arc-shaped strip, and the first arc-shaped strip is attached to the piston groove; the first arc strip is matched with the second arc strip to enable the piston rod to be fixed in the protective sleeve, and abrasion caused by collision of the piston rod and the protective sleeve is avoided.

Preferably, two screw holes are formed in the left end face of the protective sleeve, the screw holes are in threaded connection with the screw rod, and one end of the screw rod extends to the inner cavity of the protective sleeve and is rotatably connected with the second arc-shaped plate through a bearing; the second arc-shaped plate drives the second arc-shaped strip to be tightly attached to the piston groove by rotating the screw rod.

Preferably, the end face, away from the screw rod, of one side of the arc plate II is fixedly connected with an arc strip II, the arc strip II is attached to the piston groove, and the two arc strips correspond to the two arc strips one by one respectively; the piston rod is fixed in the protective sleeve by matching the arc strip II with the arc strip I, so that the piston rod is prevented from being abraded due to collision with the protective sleeve.

The utility model discloses an useful part lies in:

1. when the piston rod is produced, the HES-03002 material is selected according to the international ASTM A247 standard and is cast, so that the tensile strength of the piston rod reaches 600MPa, the yield strength reaches 400MPa, the elongation reaches 6%, the abrasion resistance and the precision of parts are greatly improved, meanwhile, the piston rod is cast in a mode of reducing stress release compared with a steel part, and the size is ensured to be stable for a long time in the later use process;

2. the utility model discloses a bradyseism pad in the protective sleeve can reduce the vibrations that the piston rod received in the transportation, run through among the go-between slips into fixed cover through the locating lever, it is tentatively spacing to carry out the piston rod, through first magnetic path and the laminating of second magnetic path mutual adsorption, make the locating lever further obtain fixedly, the support of locating lever to the piston rod has been guaranteed, drive two removals of arc through rotatory screw rod, be convenient for arc two closely laminate with the piston groove, elastic potential energy through compression spring acts on arc one, make arc one cooperation arc two closely laminate with the piston groove, and then make the piston rod tightly clamp in the protective sleeve, avoided the piston rod to receive the impact and damage in the transportation.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is a schematic perspective view of a piston rod according to a first embodiment;

fig. 2 is a schematic view of the internal structure of the piston rod according to the first embodiment;

fig. 3 is a schematic top view of the piston rod according to the first embodiment;

FIG. 4 is a schematic side view of the piston rod according to the first embodiment;

FIG. 5 is a schematic view of the inner structure of the protective sheath according to the first embodiment;

FIG. 6 is a schematic bottom view of the protective cover according to the first embodiment;

fig. 7 is a schematic view of the inner structure of the protective sheath according to the second embodiment.

In the figure: 1. a piston rod; 2. a connecting ring; 3. connecting holes; 4. a cavity; 5. positioning holes; 6. positioning pins; 7. a piston groove; 8. fixing a sleeve; 9. a first magnetic block; 10. positioning a rod; 11. a second magnetic block; 12. a compression spring; 13. a first arc plate; 14. an arc strip I; 15. a second arc strip; 16. a second arc-shaped plate; 17. a screw; 18. and (6) a protective sleeve.

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 efforts belong to the protection scope of the present invention.

Example one

Referring to fig. 1-6, an abrasion-proof precision plunger variable pump piston rod comprises a piston rod 1, a connecting ring 2, a positioning hole 5 and a fixing sleeve 8, wherein one end of the piston rod 1 is fixedly connected with the connecting ring 2, the connecting ring 2 is provided with a connecting hole 3, one end of the piston rod 1, which is far away from the connecting ring 2, is provided with a cavity 4, the cavity 4 is provided with the positioning hole 5 at the center of the inner wall of one side, which is close to the connecting ring 2, of the cavity 4, the positioning hole 5 is fixedly connected with a positioning pin 6, the piston rod 1 is provided with a piston groove 7, and the piston rod 1 is externally provided with a protecting sleeve 18; when the piston rod 1 works, when the piston rod 1 is produced, HES-03002 materials are selected according to the international ASTM A247 standard and are cast, so that the tensile strength of the piston rod 1 reaches 600MPa, the yield strength reaches 400MPa, the elongation reaches 6%, the abrasion resistance and the precision of parts are greatly improved, and when the piston rod 1 needs to be transported, the piston rod 1 is fixed in the protective sleeve 18, and the piston rod 1 is protected by the protective sleeve 18, so that the abrasion of the piston rod 1 in the transportation process is avoided.

The inner cavity of the protective sleeve 18 is provided with a clamping mechanism, the top of the right end face of the protective sleeve 18 is fixedly connected with a fixed sleeve 8, the left end face of the protective sleeve 18 is provided with a through hole, the fixed sleeve 8 is slidably connected with one end of a positioning rod 10, the other end of the positioning rod 10 penetrates through the connecting hole 3 and the through hole to extend to the outer side of the protective sleeve 18, and the bottom end face of the inner cavity of the protective sleeve 18 is provided with a shock absorption pad; during operation, the bradyseism pad that is equipped with through protective sheath 18 inner chamber bottom can reduce the vibrations that piston rod 1 received in the transportation, through run through-hole and go-between 2 with locating lever 10 and slide in fixed cover 8 among, carry on spacingly to piston rod 1, through the first magnetic path 9 in the protective sheath 18 and the laminating of adsorbing each other of second magnetic path 11 on the locating lever 10 for locating lever 10 can be fixed in fixed cover 8, has guaranteed the support of locating lever 10 to piston rod 1.

The clamping framework comprises two pressing springs 12, a first arc-shaped plate 13, a second arc-shaped plate 16 and a screw 17, the right end face of the inner cavity of the protective sleeve 18 is fixedly connected with the two pressing springs 12, and the other ends of the pressing springs 12 are fixedly connected with one side of the first arc-shaped plate 13; when the piston rod works, the elastic potential energy of the compression spring 12 drives the arc-shaped plates I13 to move relative to the arc-shaped strips I14, so that the arc-shaped strips I14 are tightly attached to the piston groove 7.

An end face, away from the compression spring 12, of one side of the arc-shaped plate I13 is fixedly connected with an arc-shaped strip I14, and the arc-shaped strip I14 is attached to the piston groove 7; during operation, the first arc strip 14 is matched with the second arc strip 15, so that the piston rod 1 is fixed in the protective sleeve 18, and abrasion caused by collision of the piston rod 1 and the protective sleeve 18 is avoided.

Two screw holes are formed in the left end face of the protective sleeve 18 and are in threaded connection with the screw 17, and one end of the screw 17 extends to an inner cavity of the protective sleeve 18 and is rotatably connected with the second arc-shaped plate 16 through a bearing; when the piston rod works, the screw rod 17 is rotated to drive the second arc-shaped plate 16 to move, so that the second arc-shaped plate 16 drives the second arc-shaped strip 15 to be tightly attached to the piston groove 7.

The end face, away from the screw 17, of one side of the arc plate II 16 is fixedly connected with an arc strip II 15, the arc strip II 15 is attached to the piston groove 7, and the two arc strips II 15 correspond to the two arc strips I14 respectively; during operation, the second arc-shaped strip 15 is matched with the first arc-shaped strip 14, so that the piston rod 1 is fixed in the protective sleeve 18, and abrasion caused by collision of the piston rod 1 and the protective sleeve 18 is avoided.

Example two

Referring to fig. 7, as another implementation manner of the present invention, in a first comparative example, a first magnetic block 9 is fixedly connected to an inner wall of the fixing sleeve 8, a first magnetic block 9 is fixedly connected to one end of the positioning rod 10 close to the fixing sleeve 8, and the first magnetic block 9 is attached to a second magnetic block 11; during operation, through running through connecting hole 3 on the go-between 2 with locating lever 10 and sliding into fixed cover 8 for locating lever 10 is tentatively fixed, through the mutual absorption laminating of first magnetic path 9 with second magnetic path 11, makes locating lever 10 further fixed, thereby is convenient for carry out spacing protection to piston rod 1.

The working principle is that when the piston rod 1 needs to be transported, the piston rod 1 is placed into the inner cavity of the protective sleeve 18, the shock absorption pad arranged at the bottom end of the inner cavity of the protective sleeve 18 can reduce the shock to the piston rod 1 in the transportation process, the positioning rod 10 slides into the fixed sleeve 8 through the through hole and the connecting ring 2 to limit the piston rod 1, the first magnetic block 9 in the protective sleeve 18 is attached to the second magnetic block 11 on the positioning rod 10 in an adsorption manner, so that the positioning rod 10 can be fixed in the fixed sleeve 8, the support of the positioning rod 10 on the piston rod 1 is ensured, meanwhile, the first arc strip 14 is attached to the piston groove 7 on the piston rod 1, the second arc strip 16 is driven to move by rotating the screw rod 17, the second arc strip 15 fixedly connected with the second arc strip 16 is attached to the other side of the piston groove 7, the screw rod 17 continues to rotate, so that the compression spring 12 is compressed, elastic potential energy of the compression spring 12 acts on the first arc-shaped strip 14, so that the first arc-shaped strip 14 and the second arc-shaped strip 15 are tightly attached to the piston groove 7, the piston rod 1 is clamped in the protective sleeve 18, and the piston rod 1 is prevented from being damaged due to impact in the transportation process.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention.

Claims

1. The utility model provides an accurate plunger variable displacement pump piston rod of abrasionproof decreases which characterized in that: including piston rod (1), go-between (2), locating hole (5) and fixed cover (8), the one end fixedly connected with go-between (2) of piston rod (1), connecting hole (3) have been seted up on go-between (2), cavity (4) have been seted up to the one end that piston rod (1) deviates from go-between (2), locating hole (5) have been seted up at one side inner wall center that cavity (4) are close to go-between (2), locating hole (5) and locating pin (6) fixed connection, piston groove (7) have been seted up on piston rod (1), piston rod (1) is equipped with protective sheath (18) outward.

2. The anti-wear precision plunger variable pump piston rod of claim 1, wherein: the inner chamber of protective sheath (18) is equipped with clamping mechanism, the fixed cover (8) of the right side terminal surface top fixedly connected with of protective sheath (18), the left side terminal surface of protective sheath (18) is equipped with the through-hole, the one end sliding connection of fixed cover (8) and locating lever (10), the other end through connection hole (3) and the outside that the through-hole extends to protective sheath (18) of locating lever (10), the bottom terminal surface of protective sheath (18) inner chamber is equipped with the bradyseism pad.

3. The anti-wear precision plunger variable pump piston rod of claim 2, wherein: the clamping framework comprises a compression spring (12), a first arc-shaped plate (13), a second arc-shaped plate (16) and a screw (17), the right end face of the inner cavity of the protective sleeve (18) is fixedly connected with the two compression springs (12), and the other end of each compression spring (12) is fixedly connected with one side of the first arc-shaped plate (13).

4. The anti-wear precision plunger variable pump piston rod of claim 3, wherein: one side end face of the arc-shaped plate I (13) departing from the compression spring (12) is fixedly connected with an arc-shaped strip I (14), and the arc-shaped strip I (14) is attached to the piston groove (7).

5. The anti-wear precision plunger variable pump piston rod of claim 4, wherein: two screw holes are formed in the end face of the left side of the protective sleeve (18), the screw holes are in threaded connection with the screw rod (17), and one end of the screw rod (17) extends to the inner cavity of the protective sleeve (18) and is rotatably connected with the second arc-shaped plate (16) through a bearing.

6. The anti-wear precision plunger variable pump piston rod of claim 5, wherein: arc two (16) deviate from a side end face fixedly connected with arc two (15) of screw rod (17), arc two (15) are laminated mutually with piston groove (7), two arc two (15) are corresponding with two arc one (14) respectively.