Horse head device of oil pumping unit capable of automatically pulling pin to give way

Abstract

The utility model relates to the technical field of pumping unit horseheads, in particular to an automatic pin pulling and avoiding pumping unit horsehead device which comprises a horsehead body, a rope connector, a connecting rope, a beam hanger, a connecting pin and a driving mechanism. The horsehead body is reasonable and compact in structure, the end portion of the walking beam of the pumping unit can be conveniently arranged in the installation groove through the installation groove, then the connecting pin is made to move backwards through the driving mechanism and then is inserted into the inner side of the end portion of the walking beam of the pumping unit, and therefore the horsehead body and the end portion of the walking beam of the pumping unit can be installed together through the connecting pin in a hinged mode. Then, a positioning pin is mounted between the first mounting hole and the end part of the pumping unit walking beam, so that the horsehead body and the pumping unit walking beam can be fixedly mounted together, and when the pumping unit needs to be maintained, after the driving mechanism works, the connecting pin moves forwards to be separated from the pumping unit walking beam, so that the aim of avoiding the horsehead body is fulfilled; in this way, hoisting equipment is not needed, personnel do not need to climb, economic cost is saved, and personnel operation is safer.

Description

Technical Field

[0001] The utility model relates to the technical field of oil pumping unit donkey heads, in particular to an oil pumping unit donkey head device which automatically pulls out a pin and gives way. Background Art

[0002] The normal working state of the pumping unit is 24 hours operation, and it will only be shut down for regular maintenance or equipment failure. During maintenance, the pumping unit needs to be kept away from the wellhead by a certain distance, and the general clearance distance for minor repairs is more than 700mm.

[0003] A Chinese patent document with announcement number CN201292823Y discloses a donkey head positioning device for a walking beam pumping unit, which includes a walking beam, a donkey head, a donkey head pin, a turbine, and a worm. The donkey head pin connecting the walking beam and the donkey head is located on the center line of the walking beam, two ends of the worm are installed in mounting holes on the walking beam, the worm wheel is installed on the upper end of the donkey head pin, the worm wheel is fixedly connected to the donkey head, and the donkey head positioning device for the walking beam pumping unit is installed on the lower wing plate of the walking beam; a support seat is fixedly installed on one end of the lower wing plate of the walking beam near the donkey head, and there are two parallel tie rod support frames on the support seat, the tie rod is installed in the through hole of the tie rod support frame, and an axial spring is installed on the tie rod located between the two tie rod support frames; a bracket is fixedly installed on the lower wing plate of the walking beam near the supporting end of the walking beam, and a handle is connected to the bracket through a pin shaft; one end of the wire rope is fixedly connected to the tie rod, and the other end is fixedly connected to the handle; the lower end of the donkey head pin is fixedly connected to a positioning plate, and the positioning plate has a positioning groove for the front end of the tie rod to be inserted. When the oil pump is repairing an oil well, the donkey head needs to move away from the wellhead so that the construction process is: first, pull the handle in the opposite direction of the donkey head, drive the pull rod to move through the wire rope, and pull the front end of the pull rod out of the positioning groove of the positioning plate; then, rotate the worm to drive the worm wheel and the donkey head to rotate with the donkey head pin as the axis; when the donkey head moves away from the wellhead, release the handle, and under the action of the axial spring, the front end of the pull rod presses against the positioning plate to prevent the donkey head from rotating. It can be seen that when pulling the handle, the operator still needs to climb up to operate, which poses a safety risk.

[0004] In minor repair work, the working donkey head of the traditional oil pump is manually moved out of position, that is, the balance donkey head of the oil pump is at the lower dead point, the equipment is shut down, the counterweight box is removed, and then the oil pump equipment is operated again to make the working donkey head at the lower dead point. The oil pump is braked, the bare rod is fixed, and the bare rod and the rope hanger are separated. Then the operator needs to climb onto a working platform 3 to 6 meters high and pull out the donkey head pin. At this time, the donkey head lacks a positioning pin shaft and will swing continuously. This kind of moving-out operation poses a safety hazard, and personnel must work at height, and sometimes lifting machinery and hoisting equipment are required, which is time-consuming and labor-intensive, and the maintenance cost is also high. Summary of the invention

[0005] The utility model provides an automatic pin-pulling and position-making oil pumping unit donkey head device, which overcomes the deficiencies of the above-mentioned prior art and can effectively solve the problem that the prior oil pumping unit position-making operation requires operators to work at heights, which poses a potential safety hazard.

[0006] The technical scheme of the utility model is realized through the following measures: an automatic pin-pulling and giving way donkey head device for an oil pump, comprising a donkey head body, a rope coupling, a connecting rope, a rope suspension device, a connecting pin and a driving mechanism, a rope groove is provided on the outer side of the right part of the donkey head body, the bottom wall of the rope groove is in an arc shape with an opening facing left, a rope coupling is installed on the inner side of the upper part of the rope groove, a reversing pulley is rotatably installed in the rope coupling, a first end of the connecting rope is fixedly connected to the front part of the rope suspension device provided below the donkey head body, a second end of the connecting rope is fixedly connected to the rear part of the rope suspension device after passing around the outer side of the upper part of the reversing pulley, a mounting groove opening facing left is provided on the left side of the upper part of the donkey head body, a first mounting hole and a second mounting hole which are through-connected front and back are provided at intervals on the upper and lower sides of the front side of the left part of the donkey head body corresponding to the position of the mounting groove, a connecting pin is passed through the second mounting hole, and a driving mechanism capable of moving the connecting pin back and forth is provided on the front side of the donkey head body.

[0007] The following are further optimizations and / or improvements to the above utility model technical solution:

[0008] The above-mentioned driving mechanism may include a guide seat, a reduction motor, a rack and a gear. The guide seat is fixedly installed on the front side of the upper part of the donkey head body, the front part of the connecting pin is slidably installed in the guide seat along the front-to-back direction, and the rack is fixedly installed on the lower side of the connecting pin. A driving shaft is rotatably installed in the guide seat corresponding to the position below the rack, and a gear is fixedly installed on the outside of the driving shaft. The upper part of the gear is meshed with the front part of the rack, and a reduction motor is fixedly installed on the front side of the donkey head body corresponding to the right position of the guide seat, and the left end of the output shaft of the reduction motor is transmission-connected to the right end of the driving shaft.

[0009] A spacer sleeve may be fixedly installed on the inner side of the front end and the inner side of the rear end of the second mounting hole, and each spacer sleeve is sleeved on the outer side of the connecting pin.

[0010] A lubrication ring groove may be provided on the inner side of the above-mentioned spacer sleeve, and a plurality of radially penetrating lubrication holes are distributed at intervals along the circumferential direction on the outer side of the upper part of the spacer sleeve corresponding to the position of the lubrication ring groove. Graphite columns and top screws are sequentially provided in the lubrication holes from the inside to the outside, and an elastic reset member is provided between the graphite column and the inner side of the lubrication hole, and the elastic reset member enables the end of the graphite column to abut against the outer side of the connecting pin.

[0011] The above-mentioned rope connector may include a positioning seat, a hanging plate, a fixing pin and an anti-slip pin. The positioning seat is fixedly installed on the inner side of the upper part of the rope groove, and a hanging plate is hingedly installed on the right part of the positioning seat. The hanging plate is in a U-shape with an opening downward. A fixing pin is fixedly installed on the inner side of the upper part of the hanging plate. The reversing pulley is rotatably installed on the outside of the fixing pin, and an anti-slip pin is fixedly installed on the lower part of the hanging plate corresponding to the position below the fixing pin.

[0012] The utility model has a reasonable and compact structure, and by setting the installation groove, it is convenient to set the end of the walking beam of the oil pumping unit in the installation groove, and then the connecting pin is moved backward by the driving mechanism and inserted into the inner side of the walking beam end of the oil pumping unit, so that the end of the walking beam of the donkey head body oil pumping unit can be hinged and installed together through the connecting pin, and then a positioning pin is installed between the first mounting hole and the end of the walking beam of the oil pumping unit, so that the donkey head body and the walking beam of the oil pumping unit can be fixedly installed together. When the oil pumping unit needs to be repaired, the driving mechanism makes the connecting pin move forward and separate from the walking beam of the oil pumping unit after work, so that the donkey head body and the walking beam of the oil pumping unit are hingedly connected by the positioning pin, and the donkey head body can be rotated relative to the walking beam of the oil pumping unit to achieve the purpose of giving way to the donkey head body, so that the automatic giving way of the donkey head body can be achieved without using lifting equipment and personnel without high-altitude operations, thereby saving economic costs and making personnel operation safer. After the maintenance work is completed, the connecting pin is moved backward by the driving mechanism and reset, and the walking beam of the oil pumping unit and the donkey head body are fixedly installed together, which not only reduces the labor intensity of personnel, but also improves the operation efficiency and reduces the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the main structure of embodiments one to five of the present utility model.

[0014] Figure 2 It is a schematic diagram of the front cross-sectional structure of embodiments one to five of the present utility model.

[0015] Figure 3 It is a schematic diagram of the left side cross-sectional structure of the connecting pin in embodiments 1 to 5 of the present invention.

[0016] Figure 4 It is a schematic diagram of the three-dimensional structure of the connecting pin in Embodiments 1 to 5 of the present invention.

[0017] Figure 5 It is a schematic diagram of the main cross-sectional structure of the spacer sleeve in embodiments three to five of the present invention.

[0018] Figure 6 It is a schematic diagram of the main structure of the rope connecting device in embodiments 1 to 5 of the present invention.

[0019] The codes in the accompanying drawings are: 1 is the donkey head body, 2 is the connecting rope, 3 is the rope hanger, 4 is the connecting pin, 5 is the rope groove, 6 is the reversing pulley, 7 is the mounting groove, 8 is the first mounting hole, 9 is the guide seat, 10 is the reduction motor, 11 is the rack, 12 is the gear, 13 is the drive shaft, 14 is the spacer, 15 is the positioning seat, 16 is the hanging plate, 17 is the fixing pin, 18 is the anti-drop pin, 19 is the graphite column, 20 is the top screw, 21 is the elastic reset part, and 22 is the lubrication ring groove. DETAILED DESCRIPTION

[0020] The present invention is not limited by the following embodiments, and specific implementation methods can be determined according to the technical solution of the present invention and actual conditions.

[0021] In the present invention, for the convenience of description, the relative position relationship of each component is described according to the attached manual. Figure 1 The layout is described in detail, such as the positional relationship of front, back, top, bottom, left, right, etc., which is based on the attached manual. Figure 1 The layout direction is determined by the

[0022] The present invention is further described below in conjunction with the embodiments and drawings:

[0023] Embodiment 1: Figures 1 to 6 As shown, the automatic pin-pulling and giving way donkey head device of the oil pump comprises a donkey head body 1, a rope coupling, a connecting rope 2, a rope suspension device 3, a connecting pin 4 and a driving mechanism. A rope groove 5 is provided on the outer side of the right part of the donkey head body 1, and the bottom wall of the rope groove 5 is in an arc shape with an opening facing left. A rope coupling is installed on the inner side of the upper part of the rope groove 5, and a reversing pulley 6 is rotatably installed in the rope coupling. The first end of the connecting rope 2 is fixedly connected to the front part of the rope suspension device 3 arranged below the donkey head body 1, and the second end of the connecting rope 2 is fixedly connected to the rear part of the rope suspension device 3 after passing around the upper outer side of the reversing pulley 6. A mounting groove 7 opening to the left is provided on the left side of the upper part of the donkey head body 1, and a first mounting hole 8 and a second mounting hole that are through-connected front and back are provided at intervals on the upper and lower sides of the front side of the left part of the donkey head body 1 corresponding to the position of the mounting groove 7, and a connecting pin 4 is penetrated in the second mounting hole, and a driving mechanism capable of moving the connecting pin 4 back and forth is provided on the front side of the donkey head body 1.

[0024] According to the requirements, the rope hanger 3 and the donkey head body 1 are both existing well-known technologies, the connecting rope 2 is an existing well-known steel wire rope, and the driving mechanism can be an existing well-known technology, such as a hydraulic cylinder or an electric push rod. During use, by setting the installation groove 7, it is convenient to set the end of the walking beam of the oil pumping unit in the installation groove 7, and then the connecting pin 4 is moved backward by the driving mechanism and inserted into the inner side of the end of the walking beam of the oil pumping unit. In this way, the donkey head body 1 and the end of the walking beam of the oil pumping unit can be hinged and installed together through the connecting pin 4, and then a positioning pin is installed between the first installation hole 8 and the end of the walking beam of the oil pumping unit, so that the donkey head body 1 and the walking beam of the oil pumping unit can be fixed together. When the oil pumping unit needs to be repaired, the driving mechanism works to move the connecting pin 4 forward and separate from the walking beam of the oil pumping unit. In this way, the donkey head body 1 and the oil pump walking beam are hingedly connected by the locating pin, and the donkey head body 1 can rotate relative to the oil pump walking beam to achieve the purpose of giving way to the donkey head body 1. In this way, there is no need to use lifting equipment and personnel do not need to perform high-altitude operations, and the donkey head body 1 can automatically give way, which greatly saves economic costs and makes personnel operation safer. After the maintenance work is completed, the connecting pin 4 is moved backward and reset through the driving mechanism, and the oil pump walking beam and the donkey head body 1 are fixedly installed together. This not only reduces the labor intensity of personnel, but also improves work efficiency and reduces maintenance costs.

[0025] According to actual needs, the above automatic pin-pulling and pin-giving donkey head device of the oil pump can be further optimized and / or improved:

[0026] Embodiment 2: As an optimization of the above embodiment, Figure 1 , 3 As shown in Figure 4, the driving mechanism includes a guide seat 9, a reduction motor 10, a rack 11 and a gear 12. The guide seat 9 is fixedly installed on the front side of the upper part of the donkey head body 1, and the front part of the connecting pin 4 is slidably installed in the guide seat 9 along the front and rear directions. The rack 11 is fixedly installed on the lower side of the connecting pin 4. A driving shaft 13 is rotatably installed in the guide seat 9 corresponding to the position below the rack 11. A gear 12 is fixedly installed on the outer side of the driving shaft 13, and the upper part of the gear 12 is meshed with the front part of the rack 11. The reduction motor 10 is fixedly installed on the front side of the donkey head body 1 corresponding to the right side of the guide seat 9, and the left end of the output shaft of the reduction motor 10 is transmission-connected with the right end of the driving shaft 13.

[0027] According to requirements, the guide seat 9 can be a box structure. The right end of the drive shaft 13 passes through the right side of the guide seat 9 and is connected to the output shaft of the reduction motor 10 through a coupling transmission. The meshing part of the gear 12 and the rack 11 of the drive shaft 13 is inside the guide seat 9, so that the meshing part of the rack 11 and the gear 12 can be lubricated, and the rack 11 and the connecting pin 4 can be constrained so that the rack 11 and the gear 12 are always in a meshing state. In this way, the reduction motor 10 can drive the rack 11 and the connecting pin 4 to move forward or backward when working, thereby realizing the disassembly and assembly between the donkey head body 1 and the walking beam of the oil pump. The reduction motor 10 can be an existing well-known worm gear reduction motor.

[0028] Embodiment 3: As an optimization of the above embodiment, Figure 2 , 3 As shown, spacers 14 are fixedly installed on the inner sides of the front end and the rear end of the second mounting hole, and each spacer 14 is sleeved on the outer side of the connecting pin 4.

[0029] According to the requirements, the rack 11 and the connecting pin 4 are integrally arranged, and the cross-sections of the rack 11 and the connecting pin 4 are circular, that is, the tooth grooves of the rack 11 can be processed and formed on the outer side of the lower part of the connecting pin 4, and the rack 11 and the connecting pin 4 form an existing known cylindrical rack. In this embodiment, the connecting pin 4, the rack 11, the gear 12, the drive shaft 13 and the guide seat 9 can form an existing known SP rack synchronous lifter. During use, by setting the spacer 14, the connecting pin 4 and the rack 11 can be supported and limited, and the rack 11 and the gear 12 can be ensured to be meshed with each other, so that when the reduction motor 10 is working, the connecting pin 4 can move forward or backward quickly, and the end cover can be fixedly installed on the outer side of the front end of the connecting pin 4, so that the rack 11 and the gear 12 can be protected, and dust can be prevented from entering the guide seat 9 to cause wear on the rack 11 and the gear 12. In the case of no power or failure of the reduction motor 10, the connecting pin 4 can be moved forward or backward through the end cover.

[0030] Embodiment 4: As an optimization of the above embodiment, Figure 3 , 5 As shown, a lubrication ring groove 22 is provided on the inner side of the spacer sleeve 14, and a plurality of radially penetrating lubrication holes are distributed along the circumferential direction at intervals on the outer side of the upper part of the spacer sleeve 14 corresponding to the position of the lubrication ring groove 22. Graphite columns 19 and top screws 20 are provided in the lubrication holes from the inside to the outside, and an elastic reset member 21 is provided between the graphite column 19 and the inner side of the lubrication hole, and the elastic reset member 21 makes the end of the graphite column 19 abut against the outer side of the connecting pin 4.

[0031] According to the requirements, the outer side of the top screw 20 is screwed into the lubrication hole, the graphite column 19 is slidably installed in the lubrication hole, the elastic reset member 21 is a compression spring known in the art, the graphite column 19 can be a T-shaped structure with a thick outer surface and a thin inner surface, there is a step in the lubrication hole, the elastic reset member 21 is installed between the step of the lubrication hole and the step of the graphite column 19, and the elastic reset member 21 can also be installed between the outer end of the graphite column 19 and the inner end of the top screw. The inner end of the graphite column 19 is against the outer side of the connecting pin 4 under the action of the top screw 20 and the elastic reset member 21. During use, when the connecting pin 4 moves back and forth, the graphite powder generated by the mutual wear of the graphite column 19 and the connecting pin 4 is filled in the lubrication ring groove 22, so that the graphite powder can lubricate the connection pin 4 and the spacer 1, extending the service life.

[0032] Embodiment 5: As an optimization of the above embodiment, Figure 2 , 6 As shown, the rope connector includes a positioning seat 15, a hanging plate 16, a fixing pin 17 and an anti-slip pin 18. The positioning seat 15 is fixedly installed on the inner side of the upper part of the rope groove 5, and the hanging plate 16 is hingedly installed on the right side of the positioning seat 15. The hanging plate 16 is in a U-shape with an opening downward. The fixing pin 17 is fixedly installed on the inner side of the upper part of the hanging plate 16. The reversing pulley 6 is rotatably installed on the outer side of the fixing pin 17, and the anti-slip pin 18 is fixedly installed on the lower part of the hanging plate 16 corresponding to the position below the fixing pin 17.

[0033] According to the needs, two fixing plates are fixedly installed at intervals on the front and rear sides of the upper inner side of the rope groove 5, a connecting rod is installed between the inner sides of the left parts of the two fixing plates, the inner side of the upper part of the hanging plate 16 is sleeved on the outer side of the connecting rod, and the anti-slip pin 18 can be an existing well-known connecting bolt. The setting of the anti-slip pin 18 can restrain the opening spacing between the lower parts of the hanging plates 16, avoid excessive force on the fixing pin 17, which causes the hanging plate 16 to deform and cause the lower opening to become larger, and finally cause the fixing pin 17 and the reversing pulley 6 to separate from the hanging plate 16, which can improve the reliability during use.

[0034] The above technical features respectively constitute various embodiments of the present utility model, which have strong adaptability and optimal implementation effect. Non-essential technical features can be added or reduced according to actual needs to meet the requirements of different situations.

Claims

1. An automatic pin-pulling and pin-making device for an oil pumping unit, characterized in that It includes a donkey head body, a rope coupling device, a connecting rope, a rope suspension device, a connecting pin and a driving mechanism, a rope groove is provided on the outer side of the right part of the donkey head body, the bottom wall of the rope groove is in an arc shape with an opening facing left, a rope coupling device is installed on the inner side of the upper part of the rope groove, a reversing pulley is rotatably installed in the rope coupling device, a first end of the connecting rope is fixedly connected to the front part of the rope suspension device provided below the donkey head body, a second end of the connecting rope is fixedly connected to the rear part of the rope suspension device after passing around the outer side of the upper part of the reversing pulley, a mounting groove opening to the left is provided on the left side of the upper part of the donkey head body, a first mounting hole and a second mounting hole which are through-going front and back are provided at intervals on the upper and lower sides of the front side of the left part of the donkey head body corresponding to the position of the mounting groove, a connecting pin is penetrated in the second mounting hole, and a driving mechanism capable of moving the connecting pin back and forth is provided on the front side of the donkey head body; The driving mechanism includes a guide seat, a reduction motor, a rack and a gear. The guide seat is fixedly installed on the front side of the upper part of the donkey head body. The front part of the connecting pin is slidably installed in the guide seat along the front-back direction. The rack is fixedly installed on the lower side of the connecting pin. A driving shaft is rotatably installed in the guide seat corresponding to the position below the rack. A gear is fixedly installed on the outer side of the driving shaft. The upper part of the gear is meshed with the front part of the rack. A reduction motor is fixedly installed on the front side of the donkey head body corresponding to the right side of the guide seat. The left end of the output shaft of the reduction motor is drivingly connected with the right end of the driving shaft. A positioning pin is installed between the first mounting hole and the end of the pumping unit walking beam.

2. The automatic pin-pulling and position-making pumping unit donkey head device according to claim 1 is characterized in that Spacers are fixedly installed on the inner side of the front end and the inner side of the rear end of the second mounting hole, and each spacer is sleeved on the outer side of the connecting pin.

3. The automatic pin-pulling and position-giving pumping unit donkey head device according to claim 2 is characterized in that A lubrication ring groove is provided on the inner side of the spacer sleeve, and a plurality of radially penetrating lubrication holes are distributed at intervals along the circumferential direction on the outer side of the upper part of the spacer sleeve corresponding to the position of the lubrication ring groove. Graphite columns and top screws are arranged in sequence from the inside to the outside of the lubrication holes, and an elastic reset member is provided between the graphite column and the inner side of the lubrication hole, and the elastic reset member makes the end of the graphite column abut against the outer side of the connecting pin.

4. The automatic pin-pulling and position-giving pumping unit donkey head device according to claim 1, 2 or 3, characterized in that The rope connector includes a positioning seat, a hanging plate, a fixing pin and an anti-slip pin. The positioning seat is fixedly installed on the inner side of the upper part of the rope groove, and a hanging plate is hingedly installed on the right side of the positioning seat. The hanging plate is in a U-shape with an opening downward. A fixing pin is fixedly installed on the inner side of the upper part of the hanging plate. The reversing pulley is rotatably installed on the outside of the fixing pin, and an anti-slip pin is fixedly installed on the lower part of the hanging plate corresponding to the position below the fixing pin.

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