CN210598849U

CN210598849U - Eccentric wear prevention coupling

Info

Publication number: CN210598849U
Application number: CN201921680047.1U
Authority: CN
Inventors: 张俊
Original assignee: Yangzhou Tianyuan Petroleum Machinery Co Ltd
Current assignee: Yangzhou Tianyuan Petroleum Machinery Co Ltd
Priority date: 2019-10-09
Filing date: 2019-10-09
Publication date: 2020-05-22
Anticipated expiration: 2029-10-09

Abstract

The utility model discloses an anti-eccentric coupling, including sucker rod, cavity, additional strengthening and coupling, be provided with the external screw thread on the lateral wall of sucker rod, be fixed with the coupling on the lateral wall of sucker rod, and be fixed with the alloy wearing layer on the lateral wall of coupling, be provided with the drag reduction coating on the lateral wall of alloy wearing layer, the inside of coupling is provided with the cavity. The utility model discloses an install the liquid guide groove that equidistant setting was put on the lateral wall of coupling, the setting up of liquid guide groove makes the coupling reduce the contact surface when the transportation transmission, thereby the resistance and the frictional force of the coupling that reduce, it is simpler to make the device operate when using, be provided with the abrasionproof on the internal screw thread lateral wall of the inside setting of notch and decrease the granule, make the coupling reduce the frictional force to the inside of notch to the connection in-process of sucker rod, the degree of wear to the inside of notch has been reduced, it is more durable to make the coupling, the service life of coupling has been increased.

Description

Eccentric wear prevention coupling

Technical Field

The utility model relates to a connection technical field of sucker rod specifically is anti-eccentric coupling.

Background

The coupling is used for being connected the connecting piece of usefulness with the sucker rod, plays the fixed seal effect, and the coupling wearing and tearing are great in the use, so the abrasionproof performance of coupling is very crucial, and the kind of staple bolt is more in the market, and we need a coupling with anti eccentric wear function according to the demand, but current anti eccentric wear coupling has many problems or defect:

firstly, the traditional anti-eccentric coupling is not stably fixed with the sucker rod when in use, and is easy to generate eccentric wear;

secondly, the traditional anti-eccentric coupling is easy to wear after long-term use, and the service life of the coupling is influenced;

thirdly, the internal strength of the traditional anti-eccentric coupling is not large enough, and the internal structure of the device is not stable enough.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an anti-eccentric coupling to the easy eccentric wear phenomenon of taking place that proposes in solving above-mentioned background art, wearing and tearing easily in using and the not big problem of internal strength enough.

In order to achieve the above object, the utility model provides a following technical scheme: anti-eccentric coupling, including sucker rod, cavity, additional strengthening and coupling, be provided with the external screw thread on the lateral wall of sucker rod, be fixed with the coupling on the lateral wall of sucker rod, and be fixed with the alloy wearing layer on the lateral wall of coupling, be provided with the drag reduction coating on the lateral wall of alloy wearing layer, the inside of coupling is provided with the cavity, and the inside of cavity is provided with additional strengthening, the inside of cavity is fixed with the packing granule, the inside of coupling is provided with the notch, and is fixed with the recess on the lateral wall of notch, be fixed with the internal thread on the lateral wall of recess, and be provided with the abrasionproof granule on the internal lateral wall, be provided with the reservation groove on the lateral wall of coupling, and the internally mounted of reservation groove has the gim peg.

Preferably, the reinforcing particles are arranged inside the cavity and are uniformly distributed inside the cavity.

Preferably, the inside wall of the preformed groove is provided with an inner concave line, the outside wall of the fixing bolt is provided with an outer convex line, and the inner concave line and the outer convex line are in threaded connection.

Preferably, additional strengthening from the top down has set gradually first stationary blade, first strengthening rib, second strengthening rib, protective coating and second stationary blade, first strengthening rib is installed to the bottom of first stationary blade, and the second strengthening rib is installed to one side of first strengthening rib, be provided with protective coating on the lateral wall of second strengthening rib.

Preferably, a second fixing sheet is fixed at the bottom end of the second reinforcing rib, and the reinforcing structures are distributed in the cavity at equal intervals.

Preferably, the outer side wall of the coupling is provided with liquid guide grooves which are distributed on the outer side wall of the coupling at equal intervals.

Preferably, a sealing ring is installed on one side of the coupling, an elastic ring is fixed on the other side of the coupling, and the sealing ring and the elastic ring are symmetrically distributed in the coupling.

Compared with the prior art, the beneficial effects of the utility model are that: the eccentric wear prevention coupling is reasonable in structure and has the following advantages:

(1) the outer side wall of the coupling is provided with the reserved groove, the inner side wall of the reserved groove is provided with the inner concave thread, the fixed bolt is arranged in the reserved groove, the outer side wall of the fixed bolt is provided with the outer convex thread, the fixed bolt firmly fixes the coupling and the sucker rod in a threaded connection manner in order to fully fix the coupling and the sucker rod during use, so that the coupling cannot deviate during use, the phenomenon that the coupling and the sucker rod are excessively worn due to deviation is avoided, the device is more firmly fixed, and the eccentric wear is prevented;

(2) the liquid guide grooves are arranged on the outer side wall of the coupling at equal intervals, so that the contact surface of the coupling is reduced during transportation and transmission, the resistance and the friction force of the coupling are reduced, the device is simpler to operate during use, anti-abrasion particles are arranged on the outer side wall of the internal thread arranged inside the notch, the friction force to the inside of the notch is reduced in the connection process of the coupling to the sucker rod, the abrasion degree to the inside of the notch is reduced, the coupling is more durable, and the service life of the coupling is prolonged;

(3) through the inside at the coupling is provided with the cavity, the internally mounted of cavity has additional strengthening, the one is twisted into to the inside first strengthening rib of additional strengthening and second strengthening rib, make coupling internal strength bigger, the protective coating who sets up on the lateral wall of first strengthening rib and second strengthening rib can be protected its top layer, this setting has prolonged device service life, first strengthening rib and second strengthening rib are fixed inside the cavity through first stationary blade and second stationary blade, it is fixed more firm, additional strengthening's setting makes coupling internal strength bigger, make the quality of coupling better, bearing capacity and resistance are stronger, and the inside of cavity is provided with fills granule and reinforced particle, it is more firm to make structural strength.

Drawings

Fig. 1 is a schematic front view of a cross-sectional structure of the present invention;

FIG. 2 is a schematic side view of the present invention;

fig. 3 is an enlarged schematic structural view of a point a in fig. 1 according to the present invention;

fig. 4 is a front view of the reinforced structure of the present invention.

In the figure: 1. a sucker rod; 2. an external thread; 3. a notch; 4. a cavity; 5. anti-wear particles; 6. an alloy wear layer; 7. filling particles; 8. a liquid guide groove; 9. a drag reducing coating; 10. reinforcing the particles; 11. a seal ring; 12. reserving a groove; 13. an internal thread; 14. a reinforcing structure; 1401. a first fixing sheet; 1402. a first reinforcing rib; 1403. a second reinforcing rib; 1404. a protective coating; 1405. a second fixing sheet; 15. a fixing bolt; 16. an elastic ring; 17. a coupling; 18. and (4) a groove.

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.

Referring to fig. 1-4, the present invention provides an embodiment: the eccentric wear prevention coupling comprises a sucker rod 1, a cavity 4, a reinforcing structure 14 and a coupling 17, wherein external threads 2 are arranged on the outer side wall of the sucker rod 1, the coupling 17 is fixed on the outer side wall of the sucker rod 1, a sealing ring 11 is installed on one side of the coupling 17, an elastic ring 16 is fixed on the other side of the coupling 17, and the sealing ring 11 and the elastic ring 16 are symmetrically distributed in the coupling 17, so that the sealing effect of the coupling 17 is better;

the outer side wall of the coupling 17 is provided with liquid guide grooves 8, and the liquid guide grooves 8 are distributed on the outer side wall of the coupling 17 at equal intervals; the resistance of the coupling 17 in the use process is effectively reduced, so that the device is more convenient to use;

an alloy wear-resistant layer 6 is fixed on the outer side wall of the coupling 17, a resistance-reducing coating 9 is arranged on the outer side wall of the alloy wear-resistant layer 6, a cavity 4 is arranged inside the coupling 17, reinforcing particles 10 are arranged inside the cavity 4, and the reinforcing particles 10 are uniformly distributed inside the cavity 4, so that the coupling 17 has higher internal strength and more stable structure;

a reinforcing structure 14 is arranged in the cavity 4, the reinforcing structure 14 is sequentially provided with a first fixing plate 1401, a first reinforcing rib 1402, a second reinforcing rib 1403, a protective coating 1404 and a second fixing plate 1405 from top to bottom, the first reinforcing rib 1402 is arranged at the bottom end of the first fixing plate 1401, the second reinforcing rib 1403 is arranged at one side of the first reinforcing rib 1402, the protective coating 1404 is arranged on the outer side wall of the second reinforcing rib 1403, the second fixing plate 1405 is fixed at the bottom end of the second reinforcing rib 1403, and the reinforcing structure 14 is distributed in the cavity 4 at equal intervals;

when the coupling 17 is used, the first reinforcing rib 1402 and the second reinforcing rib 1403 in the reinforcing structure 14 are twisted into one strand, so that the internal strength of the coupling 17 is higher, the protective coating 1404 arranged on the outer side walls of the first reinforcing rib 1402 and the second reinforcing rib 1403 can protect the surface layers of the first reinforcing rib 1402 and the second reinforcing rib 1403, the service life of the coupling 17 is prolonged, the first reinforcing rib 1402 and the second reinforcing rib 1403 are fixed in the cavity 4 through the first fixing plate 1401 and the second fixing plate 1405, so that the fixing is firmer, the internal strength of the coupling 17 is higher due to the arrangement of the reinforcing structure 14, and the quality of the coupling 17 is better;

cavity 4's inside is fixed with packing granule 7, coupling 17's inside is provided with notch 3, and be fixed with recess 18 on notch 3's the lateral wall, be fixed with internal thread 13 on recess 18's the lateral wall, and be provided with abrasionproof decreases granule 5 on internal thread 13's the lateral wall, be provided with reservation groove 12 on coupling 17's the lateral wall, be provided with interior concave line on reservation groove 12's the inside wall, be provided with outer burr on the lateral wall of gim peg 15, interior concave line and outer burr are threaded connection, the internally mounted of pre groove 12 has gim peg 15, butt joint hoop 17 and sucker rod 1 play the fixed action, prevent the skew.

The working principle is as follows: when in use, the outer side wall of the coupling 17 is provided with the reserved groove 12, the inner side wall of the reserved groove 12 is provided with the inner concave thread, the inner part of the reserved groove 12 is provided with the fixed bolt 15, the outer side wall of the fixed bolt 15 is provided with the outer convex thread, when in use, in order to fully fix the coupling 17 and the sucker rod 1, the fixed bolt 15 firmly fixes the coupling 17 and the sucker rod 1 in threaded connection, the coupling 17 can not generate deviation when in use, the condition that the coupling 17 and the sucker rod 1 are excessively worn due to the deviation is avoided, the device is more firmly fixed, the eccentric wear is prevented, by installing the liquid guide grooves 8 which are arranged at equal intervals on the outer side wall of the coupling 17, the contact surface of the coupling 17 is reduced when in transportation and transmission due to the arrangement of the liquid guide grooves 8, thereby the resistance and the friction force of the coupling 17 are reduced, the device is simpler to operate when in use, the outer side wall of the inner thread, the coupling 17 is enabled to reduce the friction force inside the notch 3 in the connection process of the sucker rod 1, the abrasion degree inside the notch 3 is reduced, the coupling 17 is enabled to be more durable, the service life of the coupling 17 is prolonged, the cavity 4 is arranged inside the coupling 17, the reinforcing structure 14 is arranged inside the cavity 4, the first reinforcing rib 1402 and the second reinforcing rib 1403 inside the reinforcing structure 14 are twisted into one, the internal strength of the coupling 17 is enabled to be higher, the protective coating 1404 arranged on the outer side wall of the first reinforcing rib 1402 and the second reinforcing rib 1403 can protect the surface layer of the first reinforcing rib 1402 and the surface layer of the second reinforcing rib 1403, the service life of the device is prolonged, the first reinforcing rib 1402 and the second reinforcing rib 1403 are fixed inside the cavity 4 through the first fixing plate 1401 and the second fixing plate 1405, the fixation is firmer, the internal strength of the coupling 17 is enabled to be higher through the arrangement of the reinforcing structure 14, the quality of the coupling 17 is enabled to be better, and the inside of the cavity 4 is provided with the filling particles 7 and the reinforcing particles 10, making the structural strength stronger.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. Eccentric wear prevention coupling, including sucker rod (1), cavity (4), additional strengthening (14) and coupling (17), its characterized in that: the outer side wall of the sucker rod (1) is provided with external threads (2), the outer side wall of the sucker rod (1) is fixed with a coupling (17), the outer side wall of the coupling (17) is fixed with an alloy wear-resistant layer (6), the outer side wall of the alloy wear-resistant layer (6) is provided with a resistance reducing coating (9), the coupling (17) is internally provided with a cavity (4), the cavity (4) is internally provided with a reinforcing structure (14), the cavity (4) is internally fixed with filling particles (7), the coupling (17) is internally provided with a notch (3), the outer side wall of the notch (3) is fixedly provided with a groove (18), the outer side wall of the groove (18) is fixedly provided with internal threads (13), the outer side wall of the internal threads (13) is provided with wear-resistant particles (5), the outer side wall of the coupling (17) is provided with a reserved groove (12), and a fixing bolt (15) is arranged in the reserved groove (12).

2. The anti-eccentric coupling according to claim 1, wherein: the reinforced particles (10) are arranged in the cavity (4), and the reinforced particles (10) are uniformly distributed in the cavity (4).

3. The anti-eccentric coupling according to claim 1, wherein: be provided with interior concave line on the inside wall of preformed groove (12), be provided with outer burr on the lateral wall of gim peg (15), interior concave line and outer burr are threaded connection.

4. The anti-eccentric coupling according to claim 1, wherein: the reinforced structure (14) is provided with a first fixing plate (1401), a first reinforcing rib (1402), a second reinforcing rib (1403), a protective coating (1404) and a second fixing plate (1405) from top to bottom in sequence, wherein the first reinforcing rib (1402) is installed at the bottom end of the first fixing plate (1401), the second reinforcing rib (1403) is installed on one side of the first reinforcing rib (1402), and the protective coating (1404) is arranged on the outer side wall of the second reinforcing rib (1403).

5. The anti-eccentric coupling according to claim 4, wherein: the bottom mounting of second strengthening rib (1403) has second stationary blade (1405), additional strengthening (14) are equidistant distribution in the inside of cavity (4).

6. The anti-eccentric coupling according to claim 1, wherein: be provided with on the lateral wall of coupling (17) and lead cistern (8), and lead cistern (8) and be equidistant distribution on the lateral wall of coupling (17).

7. The anti-eccentric coupling according to claim 1, wherein: sealing washer (11) are installed to one side of coupling (17), the opposite side of coupling (17) is fixed with elastic ring (16), sealing washer (11) and elastic ring (16) are the symmetric distribution in the inside of coupling (17).