CN210282118U

CN210282118U - Expansion device

Info

Publication number: CN210282118U
Application number: CN201920691427.9U
Authority: CN
Inventors: 寇秀玲; 寇根; 李海军; 兰昱磊; 窦建新; 张伟; 李凡
Original assignee: Petrochina Co Ltd
Current assignee: Petrochina Co Ltd
Priority date: 2019-05-14
Filing date: 2019-05-14
Publication date: 2020-04-10
Anticipated expiration: 2029-05-14

Abstract

The utility model provides an expansion device. The expansion device comprises: the mounting frame assembly comprises a plurality of frames which are connected with each other, the plurality of frames form a containing space for containing the crank fork, and two adjacent frames are detachably connected; the pushing piece penetrates through at least one frame and is used for pushing the crank fork head positioned in the accommodating space; the operation assembly comprises a transition connecting part and an operation part sleeved on the transition connecting part, the operation part is in threaded connection with the transition connecting part, and the transition connecting part is connected with at least one frame; when the pushing piece is pushed tightly against the crank fork head, the clamping tool clamps the operating part and drives the operating part to rotate so as to expand the crank fork head through the acting force between the operating part and the transition connecting part. The utility model discloses the frame of expander can not be dismantled among the prior art has been solved effectively, leads to getting of crank fork head to put comparatively difficult problem.

Description

Expansion device

Technical Field

The utility model relates to an oil development technical field particularly, relates to an expansion device.

Background

At present, an oil pumping unit is a mechanical oil extraction device commonly used in the oil field exploitation process. However, in the process of maintaining the pumping unit, the phenomenon that the crank fork head on the output shaft of the reduction gearbox is difficult to expand frequently occurs, so that key pulling is difficult, time and labor are wasted in the whole operation process, and the labor intensity of workers is increased.

In the prior art, in order to solve the above problem, an expansion device is used to expand the crank yoke. However, the frame for placing the crank fork of the expander in the prior art is not detachable, so that the crank fork is difficult to take and place, and the difficulty in taking and placing the crank fork is increased for workers.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide an expansion device to solve the problem of the prior art that the frame of the expander cannot be disassembled, resulting in the difficult taking and placing of the crank fork.

In order to achieve the above object, the present invention provides an expansion device, comprising: the mounting frame assembly comprises a plurality of frames which are connected with each other, the plurality of frames form a containing space for containing the crank fork, and two adjacent frames are detachably connected; the pushing piece penetrates through at least one frame and is used for pushing the crank fork head positioned in the accommodating space; the operation assembly comprises a transition connecting part and an operation part sleeved on the transition connecting part, the operation part is in threaded connection with the transition connecting part, and the transition connecting part is connected with at least one frame; when the pushing piece is pushed tightly against the crank fork head, the clamping tool clamps the operating part and drives the operating part to rotate so as to expand the crank fork head through the acting force between the operating part and the transition connecting part.

Furthermore, the plurality of frames comprise a first frame and a second frame, the pushing piece penetrates through the second frame, and the transition connecting portion is connected with the first frame.

Further, the first frame is clamped with the second frame, or is connected with the second frame in a threaded mode, or is connected with the second frame through a fastener.

Furthermore, a first connecting protruding edge is arranged on the first frame, a second connecting protruding edge is arranged on the second frame, and the fastener penetrates through the first connecting protruding edge and is screwed on the second connecting protruding edge.

Further, the transition connection part is welded, riveted or connected with the first frame through a fastener.

Furthermore, the first frame is provided with a through hole for the transition connecting part to pass through, and one end of the transition connecting part extends into the accommodating space and is connected with the first frame through a fastener.

Further, the expansion device further comprises: the elastic part is arranged at one end of the pushing piece extending into the accommodating space, and the pushing piece pushes the crank fork head tightly through the elastic part.

Furthermore, the elastic part is made of rubber or sponge materials and covers one end of the pushing piece extending into the accommodating space.

Further, the pushing pieces are multiple, and the multiple pushing pieces are arranged on the second frame at intervals.

Furthermore, the first frame is provided with an installation bulge, the second frame is provided with an installation concave part, and the installation bulge extends into the installation concave part and is limited and stopped by the installation concave part.

Use the technical scheme of the utility model, installation frame subassembly includes a plurality of frames of interconnect, and a plurality of frames form the accommodation space that is used for holding the crank fork head, and detachably connects between two adjacent frames. Like this, when the accommodation space of installation frame subassembly is packed into the crank fork to needs, dismantle a plurality of frames, treat that the staff packs into a plurality of frames with the crank fork and centers on the space that forms after, assemble a plurality of frames again, in order to form accommodation space, and then solved among the prior art the frame of expander can not dismantle, lead to getting of crank fork to put comparatively difficult problem, make the staff get to put more easily, simple and convenient to the getting of crank fork, the operation degree of difficulty of staff has been reduced, shorten and rise to open consuming time.

Drawings

The accompanying drawings, which form a part of the present application, 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 shows a schematic structural view of an embodiment of an expansion device according to the invention.

Wherein the figures include the following reference numerals:

10. installing a frame component; 11. an accommodating space; 12. a first frame; 121. a first connecting protruding edge; 13. a second frame; 131. a second connecting flange; 20. pushing the piece; 30. an operating component; 31. a transition connection; 32. an operation section; 40. an elastic part.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

In the present invention, unless otherwise specified, the use of directional words such as "upper and lower" is generally in reference to the orientation shown in the drawings, or to the vertical, perpendicular or gravitational orientation; likewise, for ease of understanding and description, "left and right" are generally to the left and right as shown in the drawings; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself, but the above directional terms are not intended to limit the present invention.

In order to solve the frame undetachable of expander among the prior art, lead to getting of crank fork to put comparatively difficult problem, the application provides an expansion device.

As shown in fig. 1, the expansion device includes a mounting frame assembly 10, a pusher 20, and an operating assembly 30. Wherein the mounting frame assembly 10 comprises two frames connected to each other, the two frames forming a receiving space 11 for receiving a crank fork, the two frames being detachably connected to each other. The pushing member 20 is disposed through a frame, and the pushing member 20 is used for pushing the crank fork located in the accommodating space 11. The operating assembly 30 comprises a transition connecting part 31 and an operating part 32 sleeved on the transition connecting part 31, wherein the operating part 32 is in threaded connection with the transition connecting part 31, and the transition connecting part 31 is connected with another frame. When the pushing member 20 pushes the crank fork tightly, the clamping tool clamps the operating portion 32 and drives the operating portion 32 to rotate, so as to expand the crank fork by the acting force between the operating portion 32 and the transition connecting portion 31.

Use the technical scheme of this embodiment, when the accommodation space 11 of installation frame subassembly 10 is packed into with the crank fork to needs, dismantle a plurality of frames, treat that the staff packs into a plurality of frames with the crank fork and centers on the space that forms after, assemble a plurality of frames again, with formation accommodation space 11, and then the frame of expander among the prior art can not be dismantled, lead to getting of crank fork to put comparatively difficult problem, make the staff get to put more easily, it is simple and convenient to the taking of crank fork, the operating difficulty of staff has been reduced, shorten and rise to open consuming time.

The number of frames is not limited to this, and may be any number as long as the housing space 11 can be formed by assembly. Optionally, the mounting frame assembly 10 includes three or four or five frames.

The arrangement positions of the ejector 20 and the transition connecting portion 31 are not limited to this. In other embodiments, not shown in the figures, the pusher and the transition joint are provided on the same frame.

As shown in fig. 1, the two frames include a first frame 12 and a second frame 13, the pushing member 20 is disposed on the second frame 13, and the transition connection portion 31 is connected to the first frame 12. Thus, before the crank fork is placed in, the worker only needs to disassemble the first frame 12 from the second frame 13, and after the crank fork is placed in the space surrounded by the first frame 12 and the second frame 13, the first frame 12 and the second frame 13 are assembled so that the crank fork is located in the accommodating space 11.

In the present embodiment, the first frame 12 and the second frame 13 are connected by a fastener. Thus, the connection mode makes the disassembly and assembly of the first frame 12 and the second frame 13 easier and simpler, reduces the difficulty of the disassembly and assembly of the two frames, and shortens the time consumed by the disassembly and assembly.

The connection manner of the first frame 12 and the second frame 13 is not limited to this. Optionally, the first frame 12 is snapped or screwed to the second frame 13.

As shown in fig. 1, the first frame 12 is provided with a first connecting protrusion edge 121, the second frame 13 is provided with a second connecting protrusion edge 131, and the fastener passes through the first connecting protrusion edge 121 and is screwed on the second connecting protrusion edge 131. In this way, the first frame 12 and the second frame 13 are assembled by passing the fastener through the first connecting flange 121 and then tightening the fastener on the second connecting flange 131, thereby making the assembly and disassembly of the first frame 12 and the second frame 13 easier and simpler.

In the present embodiment, the transitional coupling portion 31 is coupled to the first frame 12 by a fastener. Thus, the arrangement makes the transition connecting part 31 easier and simpler to replace or disassemble, and reduces the labor intensity of workers.

In the embodiment, the first frame 12 has a through hole for the transition connection portion 31 to pass through, and one end of the transition connection portion 31 extends into the accommodating space 11 and is connected to the first frame 12 by a fastener. Specifically, one end of the transition connection portion 31 extends into the accommodating space 11, the fastening nut is sleeved on the end to prevent the transition connection portion 31 from coming off from the via hole, and the other end of the transition connection portion 31 is sleeved on the operation portion 32 and is in threaded connection with the operation portion 32. Wherein, the transition connection portion 31 is in threaded connection with the via hole.

The intermediate connection portion 31 is welded or riveted to the first frame 12. Thus, the above arrangement makes the connection between the intermediate connection portion 31 and the first frame 12 more stable, and prevents the two from being separated from each other to affect the structural stability of the expansion device.

As shown in fig. 1, the expansion device further comprises an elastic portion 40. Wherein, the elastic part 40 is arranged at one end of the pushing piece 20 extending into the accommodating space 11, and the pushing piece 20 is tightly pushed against the crank fork head through the elastic part 40. Therefore, when the pushing piece 20 pushes the crank fork, the elastic part 40 can play a role in buffering, so that pushing vibration is reduced, and the crank fork is prevented from being structurally damaged to influence the service life of the crank fork.

Alternatively, the elastic portion 40 is made of rubber or sponge, and the elastic portion 40 is covered on one end of the pushing member 20 extending into the accommodating space 11. Thus, on one hand, the elastic part 40 is more easily assembled and disassembled; on the other hand, prevents the end of the pusher 20 from coming into direct contact with the crank prongs.

In other embodiments not shown in the drawings, the pushing member is plural, and the plural pushing members are provided at intervals on the second frame. Therefore, the arrangement enables the pushing effect of the pushing piece on the crank fork head to be better, and the time consumed by pushing is shortened.

In this embodiment, the first frame 12 is provided with a mounting protrusion, and the second frame 13 has a mounting recess, and the mounting protrusion extends into the mounting recess and is limited and stopped by the mounting recess. Like this, in first frame 12 and second frame 13 installation, the installation arch stretches into the installation concave part and with the spacing backstop of installation concave part, and then makes the equipment of first frame 12 and second frame 13 more accurate, realizes fast assembly.

In the present embodiment, the mounting frame assembly 10 is a rectangular parallelepiped frame. It should be noted that the shape of the mounting frame assembly 10 is not limited thereto as long as it can accommodate a crank fork. Optionally, the mounting frame assembly 10 is a cubic frame.

In the present embodiment, the pushing member 20 is a tightening bolt, the transition connecting portion 31 is a fixed bolt, and the operating portion 32 is a movable nut. Specifically, the expansion device works on the following principle:

when the pumping unit is maintained, the connecting rod and the connecting bolt of the crank pin of the pumping unit are first detached, the connecting rod is then pulled open, and the crank tensioning bolt is detached, so that the crank is naturally hung on the output shaft. Then, the worker puts the movable nut of the expansion device on the parallel position of the front section of the fixed bolt, loosens the puller bolt, detaches the first frame 12 and the second frame 13, and assembles the first frame 12 and the second frame 13 after the worker puts the crank fork into the space formed by the first frame 12 and the second frame 13. Then, the crank fork head is fixed by tightening and jacking the bolt, the movable nut is rotated in the loosening direction by using a pipe wrench so as to expand the crank fork head under the thrust action of the movable nut, and finally, the key is pulled out by using a key puller.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:

when the crank fork head is required to be installed in the accommodating space of the installation frame assembly, the frames are disassembled, after the crank fork head is arranged in the space formed by the frames by a worker, the frames are assembled again to form the accommodating space, and then the problem that the crank fork head is difficult to take and place is solved due to the fact that the frames of the expander cannot be disassembled in the prior art, the crank fork head is easy and convenient to take and place, the operation difficulty of the worker is reduced, and the expansion time is shortened.

It is obvious that the above described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. 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. An expansion device, comprising:

a mounting frame assembly (10) comprising a plurality of frames connected with each other, the plurality of frames forming a receiving space (11) for receiving a crank fork, and adjacent two frames being detachably connected with each other;

the pushing piece (20) penetrates through at least one frame, and the pushing piece (20) is used for pushing the crank fork head positioned in the accommodating space (11);

the operating assembly (30) comprises a transition connecting part (31) and an operating part (32) sleeved on the transition connecting part (31), the operating part (32) is in threaded connection with the transition connecting part (31), and the transition connecting part (31) is connected with at least one frame; when the pushing piece (20) pushes the crank fork head tightly, the clamping tool clamps the operation part (32) and drives the operation part (32) to rotate so as to expand the crank fork head through the acting force between the operation part (32) and the transition connecting part (31).

2. Expansion device according to claim 1, wherein the plurality of frames comprises a first frame (12) and a second frame (13), the pusher (20) being threaded onto the second frame (13), the transition connection (31) being connected to the first frame (12).

3. Expansion device according to claim 2, wherein the first frame (12) is snap-fitted or screwed or connected by fasteners to the second frame (13).

4. The expansion device according to claim 2, wherein the first frame (12) is provided with a first connecting ledge (121), the second frame (13) is provided with a second connecting ledge (131), and a fastener is screwed on the second connecting ledge (131) after passing through the first connecting ledge (121).

5. Expansion device according to claim 2, wherein the transition connection (31) is welded or riveted or connected by fasteners with the first frame (12).

6. Expansion device according to claim 2, wherein the first frame (12) has a through hole for passing a transition connection (31), one end of the transition connection (31) extending into the receiving space (11) and being connected with the first frame (12) by a fastener.

7. The expansion device of claim 1, further comprising:

the elastic part (40) is arranged at one end, extending into the accommodating space (11), of the pushing piece (20), and the pushing piece (20) is tightly pushed against the crank fork head through the elastic part (40).

8. The expansion device according to claim 7, wherein the elastic portion (40) is made of rubber or sponge, and the elastic portion (40) is covered on one end of the pushing member (20) extending into the accommodating space (11).

9. The expansion device according to claim 2, wherein the ejector (20) is plural, and plural ejectors (20) are provided at intervals on the second frame (13).

10. The expansion device according to claim 2, wherein the first frame (12) is provided with a mounting protrusion, and the second frame (13) has a mounting recess, and the mounting protrusion extends into the mounting recess and is in limit stop with the mounting recess.