CN210879483U

CN210879483U - Hydraulic device for unloading crank pin of oil pumping unit

Info

Publication number: CN210879483U
Application number: CN201922005520.2U
Authority: CN
Inventors: 周彪
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-19
Filing date: 2019-11-19
Publication date: 2020-06-30
Anticipated expiration: 2029-11-19

Abstract

The utility model discloses a hydraulic device for unloading a crank pin of a pumping unit, which comprises a crank and the crank pin, wherein the crank is provided with a plurality of pin holes, and the crank pin is arranged in the pin hole; the hydraulic crank pin ejection device comprises a crank pin, a pin hole, an actuating assembly, a power assembly and a fixing assembly, wherein the pin hole is arranged on the crank pin; compared with the prior art: the safety of the operating personnel is guaranteed, the operating personnel can operate within the safety region, the working efficiency of the operating personnel is improved by using hydraulic transmission, the damage to the surface of the crank pin is reduced, and the replacement cost is saved.

Description

Hydraulic device for unloading crank pin of oil pumping unit

Technical Field

The utility model relates to a hydraulic means of uninstallation beam-pumping unit crank pin.

Background

In oil production, the stroke adjustment of the oil pumping unit is a conventional and tedious work, and the crank pin must be disassembled in each stroke adjustment. Because the crank pin belongs to an energy transmission device of the oil pumping unit, the crank pin is required to be fastened in place, and long-time operation of the crank pin causes a series of problems of interference fit between the pin and a shaft sleeve, different radial directions of the crank and the pin, rusting of the pin and the like, so that the crank pin is difficult to unload. In addition, dismantle the crank pin by operating personnel stand in pumping unit base hull, aim at the pin head and use the hammer to strike, make the crank pin drop, such operation not only can cause the screw thread section to damage, and the safe risk is great moreover, consuming time is more, seriously influences the time rate of opening a well.

SUMMERY OF THE UTILITY MODEL

To the foregoing, the utility model provides a hydraulic means of uninstallation beam-pumping unit crank pin to solve at least one problem that exists among the above-mentioned prior art.

According to one aspect of the utility model, a hydraulic device for unloading a crank pin of a pumping unit is provided, which comprises a crank and a crank pin, wherein the crank is provided with a plurality of pin holes, and the crank pin is arranged in the pin hole; the hydraulic crank pin ejection device comprises a crank pin, a pin hole, an actuating assembly, a power assembly and a fixing assembly, wherein the pin hole is arranged on the crank pin, the actuating assembly can eject the pin hole outwards through hydraulic pressure, the power assembly provides power for the actuating assembly, the fixing assembly can be fixed on the crank to enable the actuating assembly to correspond to the position of the pin hole of the crank, the fixing assembly is sleeved on the power assembly, and the actuating assembly is connected with the power.

Preferably, the power assembly comprises a hydraulic pump, a hydraulic cylinder body and a hydraulic pipe, one end of the hydraulic pipe is connected with the output end of the hydraulic pump in a sealing mode, and the other end of the hydraulic pipe is connected with the bottom of the hydraulic cylinder body in a sealing mode.

Preferably, the execution assembly comprises a push rod and a piston, the piston is arranged inside the hydraulic cylinder body, a sealing rubber pad is arranged on the contact surface of the piston and the hydraulic cylinder body, a through hole is formed in the top of the hydraulic cylinder body, one end of the push rod is connected with the piston, and the other end of the push rod penetrates out of the through hole.

Preferably, fixed subassembly includes pull ring, tension bar and bolt, and the pull ring encircles and sets up at hydraulic cylinder surface, and tension bar one end is connected with the pull ring, and the other end is equipped with the bolt, and tension bar and bolt cooperation make the crank be located the tension bar, fix fixed subassembly on the crank.

Preferably, the tension bar is bilateral symmetry structure, including two first stationary blades, first branch, second branch, and the vertical direction in pull ring surface is equipped with a plurality of archs, and bolted connection is passed through with protruding both sides to first stationary blade one end, and bolted connection is passed through with first branch one end to the other end, and the bolted connection is passed through with second branch one end to the first branch other end, and the second branch other end is equipped with the bolt hole, and the bolt can cooperate in the bolt hole.

Preferably, one end of the bolt is a limiting rod.

The utility model has the advantages that: the safety is guaranteed, when the crank pin is unloaded from the crank in one moment, the acting force of the walking beam and the cross beam of the oil pumping unit is instantaneously transferred to the supporting jack, once equipment failure occurs, an operator in a ship body can run into danger, however, the crank pin is disassembled by using the hydraulic device, the operator can operate from a safe area, and even if an accident occurs, the operator cannot be injured.

Laborsaving saving time makes the effort effectively increase through hydraulic pressure force transmission device, and operating personnel only need press gently and press the handle, just can accomplish the uninstallation of pin in the short time, reduces operating personnel's intensity, has still effectively improved work efficiency.

The cost is saved, the damage to the screw thread on the cross section of the pin is often caused in the traditional operation of disassembling the pin by the hammer, once the screw thread is damaged, the screw thread cannot be repaired and used, the hydraulic device completely avoids the damage to the screw thread, and the purpose of reducing the cost is effectively achieved.

Drawings

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

FIG. 2 is a schematic diagram of the internal structure of a hydraulic cylinder;

FIG. 3 is a transverse cross-sectional view of the installed position prior to unloading the crank pin;

FIG. 4 is a transverse cross-sectional view of the crank pin after unloading.

In the figure, 1, a hydraulic pump, 2, a hydraulic pipe, 3, a hydraulic cylinder body, 4, a bolt, 5, a first fixing sheet, 6, a first supporting rod, 7, a second supporting rod, 8, a crank pin, 9, a pressing handle, 10, a top rod, 11, a limiting rod, 12, a rubber pad, 13, a piston, 14, a crank, 15, a pull ring, 16 and a bulge are arranged.

Detailed Description

The invention will be further explained below with reference to the drawings and some embodiments.

In fig. 1-4, a hydraulic device for unloading a crank pin of an oil pumping unit comprises a crank 14 and a crank pin 8, wherein the crank 14 is provided with a plurality of pin holes, and the crank pin 8 is arranged in the pin hole; the hydraulic crank pin device further comprises an executing assembly capable of ejecting the crank pin 8 out of the pin hole through hydraulic pressure, a power assembly providing power for the executing assembly, and a fixing assembly capable of being fixed on the crank 14 and enabling the executing assembly to correspond to the middle position of the input end face of the crank pin 8, wherein the fixing assembly is sleeved on the power assembly, and the executing assembly is connected with the power assembly in a sealing mode.

In this embodiment, the power assembly includes a hydraulic pump 1, a hydraulic cylinder 3, and a hydraulic pipe, one end of the hydraulic pipe is hermetically connected to the output end of the hydraulic pump 1, and the other end of the hydraulic pipe is hermetically connected to the bottom of the hydraulic cylinder 3; the hydraulic pump 1 is a manual hydraulic pump 1 in the prior art, the type of the hydraulic pump 1 can be SYB-2S or ADS1-103249, and the like, the hydraulic pump 1 comprises a pressing handle 9, and the pressing handle 9 can be pressed manually to work.

In this embodiment, the actuating assembly includes ejector pin 10, piston 13, and piston 13 sets up inside hydraulic cylinder body 3, and is equipped with sealing rubber pad 12 with the hydraulic cylinder body 3 contact surface, and the hydraulic cylinder body 3 top is equipped with the through-hole, and ejector pin 10 one end is connected with piston 13, and the through-hole is worn out to the other end.

In this embodiment, the fixed component includes pull ring 15, tension bar and bolt 4, and pull ring 15 encircles and sets up at the 3 external surfaces of hydraulic cylinder, and tension bar one end is connected with pull ring 15, and the other end is equipped with bolt 4, and the tension bar cooperates with bolt 4, makes crank 14 be located the tension bar, fixes the fixed component on crank 14.

In this embodiment, the tension bar is a bilateral symmetry structure, and includes two first fixing pieces 5, a first support bar 6 and a second support bar 7, wherein a plurality of protrusions 16 are arranged on the surface of the pull ring 15 in the vertical direction, one end of each first fixing piece 5 is connected with two sides of each protrusion 16 through bolts, the other end of each first fixing piece is connected with one end of each first support bar 6 through bolts, the other end of each first support bar 6 is connected with one end of each second support bar 7 through bolts, and the other end of each second support bar 7 is provided with a bolt 4 hole; the bolts 4 can be matched in the bolt 4 holes on the left side and the right side of the tension rod at the same time to fix the fixing component and the crank; the bolt connection described above belongs to the common technical means in the field, and is not described herein in detail.

In this embodiment, the fixing assembly and the crank 14 are fixed by passing a tension rod through the upper and lower sides of the crank 14, making the top rod 10 correspond to the middle position of the input end surface of the crank pin 8, passing the bolts 4 through the holes 4 on the left and right sides of the tension rod, making the crank 14 located in the tension rod, and screwing the bolts at the joint of the first fixing piece 5 and the protrusion 16, the joint of the first support rod 6 and the first fixing piece 5, and the joint of the second support rod 7 and the first support rod 6 to complete the fixing process.

In this embodiment, one end of the plug pin 4 is a limiting rod 11, and the limiting rod 11 is used for preventing the plug pin 4 from falling off in the hole of the plug pin 4.

The utility model discloses when concrete implementation: the fixed component is fixed with the crank 14, so that the ejector rod 10 corresponds to the middle position of the input end surface of the crank pin 8, then the pressing handle 9 of the hydraulic pump 1 is pressed within a safe distance, the piston 13 moves towards the top of the hydraulic cylinder body 3 along with the rise of the pressure in the sealing end of the hydraulic cylinder, and the ejector rod 10 extends out of the cylinder body along with the rise of the piston 13, so that the crank pin 8 is ejected.

It is worth mentioning that: in the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; mechanical connection is possible, and a person of ordinary skill in the art can understand the specific meaning of the above terms in the present invention according to specific situations.

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 embodied in other specific forms without departing from the spirit or essential characteristics thereof. 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. The utility model provides a hydraulic means of uninstallation beam-pumping unit crank pin, includes crank, crank pin, is equipped with a plurality of pinholes on the crank, in the pinhole of crank pin installation, its characterized in that: the crank pin pushing device comprises a crank pin, a power assembly and a fixing assembly, wherein the crank pin is arranged on the crank, the power assembly is used for pushing the crank pin out of the pin hole through hydraulic pressure, the fixing assembly can be fixed on the crank and enables the executing assembly to correspond to the middle position of the input end face of the crank pin, the fixing assembly is sleeved on the power assembly, and the executing assembly is connected with the power assembly in a sealing mode.

2. The hydraulic apparatus for unloading a crank pin of a pumping unit according to claim 1, wherein: the power assembly comprises a hydraulic pump, a hydraulic cylinder body and a hydraulic pipe, one end of the hydraulic pipe is connected with the output end of the hydraulic pump in a sealing mode, and the other end of the hydraulic pipe is connected with the bottom of the hydraulic cylinder body in a sealing mode.

3. The hydraulic apparatus for unloading a crank pin of a pumping unit according to claim 1, wherein: the execution assembly comprises a push rod and a piston, the piston is arranged inside the hydraulic cylinder body, a sealing rubber pad is arranged on the contact surface of the piston and the hydraulic cylinder body, a through hole is formed in the top of the hydraulic cylinder body, one end of the push rod is connected with the piston, and the other end of the push rod penetrates out of the through hole.

4. The hydraulic apparatus for unloading a crank pin of a pumping unit according to claim 1, wherein: the fixed assembly comprises a pull ring, a pull rod and a bolt, the pull ring is arranged on the outer surface of the hydraulic cylinder in a surrounding mode, one end of the pull rod is connected with the pull ring, the bolt is arranged at the other end of the pull rod, the pull rod is matched with the bolt, the crank is located in the pull rod, and the fixed assembly is fixed on the crank.

5. The hydraulic apparatus for unloading a crank pin of a pumping unit according to claim 4, wherein: the tension bar is of a bilateral symmetry structure and comprises two first fixing pieces, a first supporting rod and a second supporting rod, a plurality of protrusions are arranged in the vertical direction of the surface of the pull ring, one end of each first fixing piece is connected with two sides of each protrusion through a bolt, the other end of each first fixing piece is connected with one end of each first supporting rod through a bolt, the other end of each first supporting rod is connected with one end of each second supporting rod through a bolt, the other end of each second supporting rod is provided with a bolt hole, and a bolt can be matched in the bolt hole.

6. The hydraulic apparatus for unloading a crank pin of a pumping unit according to claim 5, wherein: one end of the bolt is a limiting rod.