CN214465523U - Two-end compensation type connecting pin device for oil pumping unit - Google Patents
Two-end compensation type connecting pin device for oil pumping unit Download PDFInfo
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- CN214465523U CN214465523U CN202120684456.XU CN202120684456U CN214465523U CN 214465523 U CN214465523 U CN 214465523U CN 202120684456 U CN202120684456 U CN 202120684456U CN 214465523 U CN214465523 U CN 214465523U
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Abstract
The utility model relates to a two-end compensation type connecting pin device for an oil pumping unit, which comprises a double-head taper pin (1), compensation connecting sleeves (2) and fastening nuts (3), wherein the appearance of the double-head taper pin (1) is thick in the middle and thin in the two ends, the two ends are provided with threaded columns (11), the appearance of the compensation connecting sleeves (2) is cylindrical, an inner taper hole (21) is arranged in the middle, an open slot (22) is axially arranged on the cylinder of the compensation connecting sleeves (2), the two compensation connecting sleeves (2) are respectively sleeved at the two ends of the double-head taper pin (1), the inner taper hole (21) is tightly contacted with the outer taper pin surface of the double-head taper pin (1), the fastening nuts (3) are arranged on the threaded columns (11) to tightly press and fasten the compensation connecting sleeves (2), the utility model has simple and practical structure and high mechanical connection strength, and the two ends are respectively pre-tightened to adjust and compensate, the maintenance and the adjustment are convenient and fast, the effect is good, and the cost is low.
Description
Technical Field
The utility model relates to a technical field is made in the beam-pumping unit production, concretely relates to both ends compensation formula connecting pin device for beam-pumping unit.
Background
A beam in the pumping unit is one of main components for torque transmission, the beam is connected with a walking beam through a bearing seat, and a double-lug seat on the beam is connected with an upper joint of a connecting rod in a crank connecting rod mechanism through a connecting pin. When the pumping unit is in operation, the connecting rod is subjected to periodically-changed tension and pressure, and when the suspension point is in upward stroke, the connecting rod bears tension, when the suspension point goes down, the connecting rod bears pressure, a radial gap is formed between the connecting pin and the upper joint of the connecting rod, when the connecting rod is mutually converted between tension and pressure, the conversion of the bearing contact surface is inevitably generated between the connecting pin and the upper joint of the connecting rod, the plastic deformation is caused by the impact on the bearing contact surface, the deformation is accelerated and the gap is gradually increased by repeating the above steps, and because of the gap between the connecting pin and the upper joint of the connecting rod, under the effect of connecting rod reciprocating force, will cause the impact to the crossbeam to lead to the connecting rod to appear swing and striking abnormal sound when switching-over from top to bottom, periodic vibration can appear promptly in the beam-pumping unit operation, and abnormal sound also crescent, produces huge hidden danger to the safe operation of beam-pumping unit in the well site.
The technical scheme includes that one end of the taper pin is adjusted and fastened, and the taper sleeve is integrally pre-tightened and adjusted, and the defects exist in the actual use process that firstly, the upper connector of the connecting rod is arranged in the middle of the double lug seats of the cross beam, the upper connector of the connecting rod is respectively connected with the double lug seats of the cross beam through two sides of the taper sleeve of the connecting rod, the size of gaps on two sides is different, only the gap on one side of a small gap can be eliminated through pre-tightening adjustment, but a gap can also exist on one side of a large gap, and the pre-tightening adjustment connection effect is poor; and secondly, the connecting rod taper pin is integrally thinned, the mechanical strength is reduced, and the connection between the beam double-lug seat and the connecting rod upper joint is not facilitated.
Disclosure of Invention
An object of the utility model is to solve the not enough of prior art existence, provide a both ends compensation formula connecting pin device for beam-pumping unit, simple structure is practical, and mechanical connection intensity is high, and both ends pretension adjustment compensation respectively, maintenance regulation convenient and fast, effectual, with low costs.
The utility model adopts the technical proposal that: the utility model provides a both ends compensation formula connecting pin device for beam-pumping unit, including double-end taper pin 1, compensation adapter sleeve 2 and fastening nut 3, the appearance of double-end taper pin 1 is thick both ends in the middle of thin, its both ends are provided with screw post 11, the appearance of compensation adapter sleeve 2 is cylindric, be provided with interior taper hole 21 in its middle of, the cylinder axial of compensation adapter sleeve 2 is provided with open slot 22, two compensation adapter sleeve 2 suit respectively at the both ends of double-end taper pin 1, interior taper hole 21 and the outer disc taper pin face in close contact with of double-end taper pin 1, fastening nut 3 installs on screw post 11, compress tightly the fastening to compensation adapter sleeve 2.
The further improvement is that the taper of the double-head taper pin 1 is 1: 60-1: 15.
The further improvement lies in that the cylinder of the compensation connecting sleeve 2 is radially provided with a plurality of round holes 23, and the round holes 23 are close to the small-diameter end of the inner conical hole 21.
The further improvement is that the fastening nut 3 is a hammering nut.
The further improvement is that two fastening nuts 3 are arranged on the threaded column 11 in parallel.
Compared with the prior art, the utility model following beneficial effect has: simple structure is practical, and mechanical connection intensity is high, and both ends pretension respectively adjusts the compensation, and maintenance is adjusted convenient and fast, effectual, with low costs.
Drawings
Figure 1 is a schematic structural diagram of the present invention,
figure 2 is a schematic structural view of the compensating connecting sleeve of the present invention,
fig. 3 is a left side view of fig. 2.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention can be more clearly and clearly defined.
As shown in fig. 1, 2 and 3, a two-end compensation type connecting pin device for an oil pumping unit comprises a double-ended conical pin 1, a compensation connecting sleeve 2 and a fastening nut 3, wherein the double-ended conical pin 1 is thick in the middle and thin in the two ends, threaded columns 11 are arranged at the two ends of the double-ended conical pin, the taper of the double-ended conical pin 1 is 1: 60-1: 15 and preferably 1: 45, the compensation connecting sleeve 2 is cylindrical, an inner conical hole 21 is arranged in the middle of the compensation connecting sleeve, an open slot 22 is axially arranged on a cylinder of the compensation connecting sleeve 2, a plurality of round holes 23 are radially arranged on the cylinder of the compensation connecting sleeve 2, the round holes 23 are close to the small-diameter end of the inner conical hole 21, the two compensation connecting sleeves 2 are respectively sleeved at the two ends of the double-ended conical pin 1, the inner conical hole 21 is tightly contacted with the outer conical pin surface of the double-ended conical pin 1, the fastening nut 3 is arranged on the threaded columns 11 to tightly press and fasten the compensation connecting sleeve 2, fastening nut 3 is the hammering nut, is equipped with the lug on the excircle of hammering nut, uses the hammer to strike the lug and carry out rotation operation to hammering nut, is favorable to the dismouting operation, installs two fastening nuts 3 on the screw post 11 side by side, and one compresses tightly the fastening, and another locks.
Firstly, inserting a double-head taper pin 1 into a double-lug seat hole of a cross beam and an upper joint hole of a connecting rod, then respectively sleeving two compensation connecting sleeves 2 at two ends of the double-head taper pin 1, arranging one compensation connecting sleeve 2 in a lug seat hole at one side and the upper joint hole of the connecting rod, arranging the other compensation connecting sleeve 2 in a lug seat hole at the other side and the upper joint hole of the connecting rod, and tightly pressing and fastening the compensation connecting sleeves 2 by screwing a fastening nut 3; when the oil pumping unit is maintained on site, if a gap exists, the fastening nut 3 is rotated to perform compression compensation on the compensation connecting sleeve 2, the gap is eliminated, the fastening nuts 3 are respectively rotated at two ends to perform compression compensation on the compensation connecting sleeve 2, the gap at two sides of the double lug seats of the beam can be completely eliminated, the mechanical connection strength is high, and the adjustment compensation effect is good; when the compensation connecting sleeve 2 is disassembled and replaced, the circular hole 23 can be utilized to make the disassembly and replacement operations smooth and convenient.
Without being limited thereto, any changes or substitutions which are not thought of through creative efforts should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.
Claims (5)
1. The utility model provides a both ends compensation formula connecting pin device for beam-pumping unit, a serial communication port, including double-end taper pin (1), compensation adapter sleeve (2) and fastening nut (3), the appearance of double-end taper pin (1) is thick both ends in the middle of thin, its both ends are provided with screw thread post (11), the appearance of compensation adapter sleeve (2) is cylindricly, be provided with interior taper hole (21) in the middle of it, the cylinder axial of compensation adapter sleeve (2) is provided with open slot (22), two compensation adapter sleeve (2) suit respectively are at the both ends of double-end taper pin (1), interior taper hole (21) and the outer disc taper pin face in close contact with of double-end taper pin (1), fastening nut (3) are installed on screw thread post (11), compress tightly the fastening to compensation adapter sleeve (2).
2. The two-end compensation type connecting pin device for the oil pumping unit according to claim 1, wherein the taper of the double-ended conical pin (1) is 1: 60-1: 15.
3. The two-end compensation type connecting pin device for the oil pumping unit according to claim 1, wherein the cylinder of the compensation connecting sleeve (2) is radially provided with a plurality of round holes (23), and the round holes (23) are close to the small-diameter end of the inner conical hole (21).
4. The end-compensating connecting pin device for pumping units of claim 1, wherein the fastening nut (3) is a hammer nut.
5. The end-compensating connecting pin device for pumping unit of claim 1, wherein two fastening nuts (3) are mounted on the threaded column (11) in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120684456.XU CN214465523U (en) | 2021-03-31 | 2021-03-31 | Two-end compensation type connecting pin device for oil pumping unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120684456.XU CN214465523U (en) | 2021-03-31 | 2021-03-31 | Two-end compensation type connecting pin device for oil pumping unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214465523U true CN214465523U (en) | 2021-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120684456.XU Active CN214465523U (en) | 2021-03-31 | 2021-03-31 | Two-end compensation type connecting pin device for oil pumping unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214465523U (en) |
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2021
- 2021-03-31 CN CN202120684456.XU patent/CN214465523U/en active Active
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