CN111691857B - Load safety unloading device of oil pumping unit - Google Patents
Load safety unloading device of oil pumping unit Download PDFInfo
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- CN111691857B CN111691857B CN202010524295.8A CN202010524295A CN111691857B CN 111691857 B CN111691857 B CN 111691857B CN 202010524295 A CN202010524295 A CN 202010524295A CN 111691857 B CN111691857 B CN 111691857B
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- pumping unit
- oil pumping
- screw rod
- base
- plate
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/18—Connecting or disconnecting drill bit and drilling pipe
Abstract
The invention discloses a load safety unloading device of an oil pumping unit, which is characterized by comprising a top drive mechanism and a supporting mechanism; the supporting mechanism is seated on a wellhead packing box of the oil pumping unit; the top drive mechanism is connected to the support mechanism; the supporting mechanism is used for supporting the top driving mechanism so that the top driving mechanism can stand under a polished rod clamp of the oil pumping unit; the top drive mechanism is used for applying a straight upward acting force to the polish rod clamp of the oil pumping unit; the acting force is used for unloading the load of the pumping unit; the problems that the existing oil pumping machine needs to assist large-scale equipment such as a crane in load unloading, so that the controllability, safety and unloading efficiency of unloading operation are low are solved.
Description
Technical Field
The invention relates to an auxiliary tool for maintaining an oil pumping unit, in particular to a safe unloading device of the oil pumping unit.
Background
The method can be carried out on the premise that the load of the pumping unit needs to be unloaded when the pumping unit needs to replace a hair braid or adjust the stroke. The impact type unloading is needed to be adopted under the assistance of a large crane during the traditional unloading operation, the impact force in the moment of impact is large, the square clamp is caused to damage the sucker rod, the used sucker rod can be repaired after the damage, and follow-up work such as grinding is needed.
Disclosure of Invention
In view of this, the invention provides a load safety unloading device for an oil pumping unit, which solves the problems of low controllability, safety and unloading efficiency of unloading operation caused by the auxiliary use of large-scale equipment such as a crane in the load unloading of the existing oil pumping unit.
In order to achieve the above object, the load safety unloading device for oil pumping unit is characterized by comprising:
a top drive mechanism and a support mechanism;
the supporting mechanism is seated on a wellhead packing box of the oil pumping unit;
the top drive mechanism is connected to the support mechanism;
the supporting mechanism is used for supporting the top driving mechanism so that the top driving mechanism is erected under a polished rod clamp of the oil pumping unit;
the top drive mechanism is used for applying a straight upward acting force to the polish rod clamp of the oil pumping unit;
and the acting force is used for unloading the load of the oil pumping unit.
Preferably, the top driving mechanism comprises a gear driving assembly and a screw rod transmission assembly;
the gear driving mechanism is used for applying a rotary driving force to the screw rod transmission assembly;
and the screw rod transmission assembly is used for converting the rotary driving force into the linear upward acting force.
Preferably, the gear driving mechanism comprises a driving wheel and a driven wheel;
the driving wheel is used for transmitting the rotary driving force to the driven wheel;
and the driven wheel is used for transmitting the rotary driving force to the screw rod transmission assembly.
Preferably, the gear driving mechanism further comprises an intermediate wheel;
the intermediate wheel is in gear transmission with the driving wheel and the driven wheel respectively;
the intermediate wheel is used for improving the output torque of the driving wheel;
and/or the presence of a gas in the interior of the container,
the driven wheel is connected with a bearing;
the bearing is used for improving the rotation flexibility of the driven wheel.
Preferably, the screw rod transmission assembly comprises a screw rod and a nut;
the nut is fixedly connected with the driven wheel;
the driven wheel is used for transmitting the rotary driving force to the nut;
the nut is used for converting the rotary driving force into an acting force of the spiral screw rod which is linearly upward;
and the screw rod is used for transmitting the linear upward acting force to the polish rod clip of the oil pumping unit.
Preferably, the bottom of the spiral screw rod is connected with a limiting cap;
the limiting cap is used for limiting the spiral screw rod to be separated from the nut;
and/or the presence of a gas in the interior of the container,
a pressure-bearing top plate is connected above the spiral screw rod;
the pressure-bearing top plate is used for uniformly transmitting the linear upward acting force to the polish rod clip of the oil pumping unit.
Preferably, the pressure-bearing top plate is provided with a gap;
the opening is used for accommodating the sucker rod;
a first security mechanism is arranged on the outer side of the opening;
the first security mechanism comprises a lock pin;
the lock pin is used for opening or closing the gap.
Preferably, the supporting mechanism comprises a base and a supporting plate;
the gear driving assembly and the screw rod transmission assembly are connected to the supporting plate;
the base is used for supporting the supporting plate so that the gear driving assembly and the screw rod transmission assembly stand under a polished rod clamp of the oil pumping unit.
Preferably, the base is cylindrical with a notch;
the gap is used as the inlet of the sucker rod so that the base is seated on the wellhead packing box of the pumping unit;
a second security mechanism is arranged on the base;
and the second security mechanism is used for plugging the gap so as to prevent the base from falling off from the wellhead packing box of the pumping unit.
Preferably, the second security mechanism comprises an arc-shaped plate;
the arc-shaped plate is connected with a sliding pin;
a horizontal hole is formed in the base;
the arc-shaped plate is arranged in the base;
the sliding pin moves along the horizontal hole to drive the arc-shaped plate to rotate in the base;
the rotation is used for opening or closing the notch by the arc-shaped plate;
and/or the presence of a gas in the interior of the container,
a reinforcing plate is arranged at the bottom of the supporting plate;
the reinforcing plate is used for increasing the supporting strength of the supporting plate;
and/or the presence of a gas in the interior of the container,
a cover plate is connected above the supporting plate;
the gear driving component is connected between the cover plate and the supporting plate;
the gear driving component is provided with an interface;
the interface is used for connecting driving equipment;
the drive apparatus for applying the rotational drive force to the gear drive assembly;
the gear driving assembly is used for transmitting the rotary driving force to the screw rod transmission assembly;
and/or the presence of a gas in the interior of the container,
the bottom of the base is provided with an edge;
the border is used for increasing the base with the area of contact of beam-pumping unit wellhead packing box is in order to increase the firm degree of base.
The invention has the following beneficial effects:
because the pumping unit polish rod clip is a square clip, the lower end surface of the square clip is a plane, the square clip and the square clip are fixedly connected, the lower end surface of the opposite clip exerts the straight upward acting force, namely, the same acting force is exerted on the polish rod (namely, the sucker rod) of the pumping unit, and the purpose of unloading the load of the pumping unit is achieved when the acting force reaches the load of the pumping unit. And the pumping unit wellhead packing box is vertically positioned right below the pumping unit polished rod clip, and has the functions of immobilization and small distance from the pumping unit polished rod clip.
Based on the structural characteristics, the unloading device is utilized, and is provided with the supporting mechanism and the top driving mechanism, wherein the supporting mechanism uses the packing box as a stand point to stably support the top driving mechanism, and the top driving mechanism uses the supporting mechanism as a stand point to continuously apply a linear upward acting force on a polished rod clamp of the oil pumping unit until the acting force reaches a load numerical value of the oil pumping unit, so that the purpose of unloading the load of the oil pumping unit is realized, and the problem that the existing unloading can be completed only by the aid of crane assistance is solved; in the unloading process, only the straight upward acting force is applied to the top drive mechanism, and no other operation is performed on the polished rod of the oil pumping unit and other parts, so that the rod column damage accident of the oil pumping unit cannot occur, the service life of the polished rod of the oil pumping unit is indirectly prolonged, and the two-stage security mechanism is arranged, so that the operation safety can be ensured in the unloading process; in addition, the top driving mechanism adopts a gear driving component with a secondary speed reduction function, and the purpose of unloading the load can be achieved only by applying smaller force, so the unloading efficiency is high, the whole device is stable to operate, and the unloading can be controlled completely.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:
FIG. 1 is a schematic structural diagram of a load safety unloading device of a pumping unit according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a gear drive mechanism of the embodiment of the invention;
fig. 3 is a schematic structural diagram of a second security mechanism according to an embodiment of the present invention.
Detailed Description
The present invention will be described below based on examples, but it should be noted that the present invention is not limited to these examples. In the following detailed description of the present invention, certain specific details are set forth. However, the present invention may be fully understood by those skilled in the art for those parts not described in detail.
Furthermore, those skilled in the art will appreciate that the drawings are provided solely for the purposes of illustrating the invention, features and advantages thereof, and are not necessarily drawn to scale.
Also, unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, the meaning of "includes but is not limited to".
FIG. 1 is a schematic structural diagram of a load safety unloading device of a pumping unit according to an embodiment of the present invention; as shown in fig. 1: a load safety unloading device of an oil pumping unit comprises a top drive mechanism and a support mechanism, wherein the support mechanism is seated on a wellhead packing box of the oil pumping unit, and the top drive mechanism is connected to the support mechanism; the supporting mechanism is used for supporting the top driving mechanism so that the top driving mechanism is erected under the polish rod clamp of the oil pumping unit, and the top driving mechanism is used for applying a straight upward acting force to the polish rod clamp of the oil pumping unit; this straight upward force is used to unload the pump jack load.
Because the pumping unit polish rod clip is a square clip, the lower end surface of the square clip is a plane, the square clip and the square clip are fixedly connected, the lower end surface of the opposite clip exerts the straight upward acting force, namely, the same acting force is exerted on the polish rod (namely, the sucker rod) of the pumping unit, and the purpose of unloading the load of the pumping unit is achieved when the acting force reaches the load of the pumping unit. And the pumping unit wellhead packing box is vertically positioned right below the pumping unit polished rod clip, and has the functions of immobilization and small distance from the pumping unit polished rod clip.
Based on the structural characteristics, the unloading device of the embodiment utilizes the packing box and is provided with the supporting mechanism and the top driving mechanism, wherein the supporting mechanism uses the packing box as a stand point to stably support the top driving mechanism, and the top driving mechanism uses the supporting mechanism as a stand point to continuously apply a linear upward acting force on a polished rod clip of the pumping unit until the acting force reaches a load numerical value of the pumping unit, so that the purpose of unloading the load of the pumping unit is realized. And the unloading operation only needs to apply a straight upward acting force on the top drive mechanism, and no other operation is carried out on the polished rod of the pumping unit and other parts, so that the rod column damage accident of the pumping unit cannot occur, and the service life of the polished rod of the pumping unit is indirectly prolonged.
Specifically, the top drive mechanism comprises a gear drive assembly and a screw transmission assembly, wherein the gear drive mechanism is used for applying a rotary driving force to the screw transmission assembly, and the screw transmission assembly is used for converting the rotary driving force into a linear upward acting force.
The embodiment selects the gear driving component to apply the rotary driving force to the screw rod transmission component, mainly utilizes the characteristic that the gear driving component can transmit large torque, and has the advantages of minimum volume and simpler structure on the premise of achieving the same effect.
The rotary driving force is converted into linear driving force through the screw rod transmission assembly, and the linear driving force is linear upward acting force continuously applied to a polish rod clip of the pumping unit; as for the screw rod transmission mode, the screw rod transmission mode has the characteristics of simple structure, high transmission efficiency, low cost, easiness in processing and manufacturing and the like.
The load of beam-pumping unit post can reach 3-5 tons generally, if adopt other top drive mechanisms, either can not bear so big load, or pass power strenuous, for example drive with ordinary hydraulic pressure mechanism, typically like the jack structure, will transmit this moment of torsion, then the volume that can satisfy the hydraulic pressure mechanism of requirement then must be very big, so, the cost increases obviously, and the structure is complicated moreover, and it is inconvenient to use, and the practicality obviously reduces.
In fig. 1 and 2, the gear driving mechanism includes a driving wheel 6 and a driven wheel 15, wherein the driving wheel 6 is used for transmitting the rotational driving force to the driven wheel 15, and the driven wheel 15 is used for transmitting the rotational driving force to the screw rod transmission assembly.
Preferably, the gear driving mechanism of the present embodiment further includes an intermediate wheel 17, and the intermediate wheel 17 is in gear transmission with the driving wheel 6 and the driven wheel 15, respectively, and the output torque of the gear driving mechanism can be increased through the intermediate wheel 17.
The gear driving mechanism of the embodiment adopts a two-stage gear reduction transmission mode of the driving wheel 6, the intermediate wheel 17 and the driven wheel 15, and utilizes the characteristic of increasing output torque of gear reduction transmission, so that the effect of outputting larger torque can be achieved by applying smaller torque to the driving wheel 6; in the actual process of unloading the load of the oil pumping unit, the purpose of driving can be achieved by applying rotating torque to the driving wheel 6 by using a rotating wrench manually, and the labor is saved.
In fig. 1, a bearing 14 is provided below the driven wheel 15, and the bearing 14 can improve the rotational flexibility of the driven wheel 15.
In fig. 1, the screw transmission assembly comprises a screw rod 3 and a nut 5, the nut 5 is fixedly connected with a driven wheel 15, the driven wheel 15 transmits a rotary driving force to the nut 5, the nut 5 converts the rotary driving force into an upward linear acting force of the screw rod 3, and the screw rod 3 finally transmits the upward linear acting force to a polish rod clip of the pumping unit, so that the purpose of unloading the load of the pumping unit is achieved.
Preferably, the bottom of the screw rod 3 is connected with a limiting cap 10, because the driven wheel 15 drives the nut 5 to rotate, if the limiting cap 10 is not provided, the screw rod 3 is finally separated from the nut 5, and the limiting cap 10 can limit the screw rod 3 from being separated from the nut 5; this spacing cap 10 and helical screw 3's connected mode can be fixed connection also can be dismantled the connection, and the preferred connection of dismantling, for example threaded connection, if helical screw 3 needs to be changed, then need not destroy spacing cap 10, only need dismantle spacing cap 10 get off and can carry out helical screw 3's change.
In fig. 1, a pressure-bearing top plate 1 is connected above a screw rod 3, and the pressure-bearing top plate 1 is used for uniformly transmitting the linear upward acting force to a polish rod clip of the pumping unit.
Obviously, the up end area of screw rod 3 is very little, its area of contact with beam-pumping unit polished rod checkpost is must less, and the beam-pumping unit load is very big moreover, so, the local effort of terminal surface is just very big under the beam-pumping unit polished rod checkpost in the effect, can cause the injury to beam-pumping unit polished rod checkpost, in order to avoid the appearance of this phenomenon, connect pressure-bearing roof 1 in screw rod 3's top, evenly transmit the ascending effort of straight line for beam-pumping unit polished rod checkpost through this pressure-bearing roof 1, reach the purpose of protection beam-pumping unit polished rod checkpost.
According to the connecting structure characteristics of the polish rod clip and the oil pumping rod of the oil pumping unit, the pressure bearing top plate 1 is provided with a notch (the notch is not shown in the figure), and the notch can contain the oil pumping rod. So, can make better cooperation with beam-pumping unit polished rod checkpost of pressure-bearing roof 1, thereby reach furthest and contact the purpose of even transmission effort.
Preferably, a first security mechanism is arranged on the outer side of the opening, the first security mechanism comprises a lock pin 2, and the lock pin 2 is used for opening or closing the opening. Specifically, the lock pin 2 is partially or completely pulled out, and when the opening is opened, the sucker rod can be radially inserted into the opening or taken out of the opening; when the lock pin 2 is pulled out and locked by the pin, the opening is closed, and the sucker rod is enclosed in the enclosed space enclosed by the opening and the lock pin. Under the effect of this first security protection mechanism, the whole emergence that leads to the whole accident that drops from the packing box of uninstallation device because of the above skew phenomenon happens to take place for this moment this embodiment's uninstallation device, that is to say, this first security protection mechanism guarantees the security of device from the top, and then guarantees the security of uninstallation operation process.
Specifically, in fig. 1, the supporting mechanism includes a base 11 and a supporting plate 13, the gear driving assembly and the screw transmission assembly are connected to the supporting plate 13, the base 11 is seated on a wellhead packing box of the pumping unit, and the supporting plate 13 is supported to enable the gear driving assembly and the screw transmission assembly to stand under a polished rod clamp of the pumping unit.
In view of the structural characteristics of the wellhead packing box of the pumping unit and the connection with the pumping rod, the base 11 is in a cylindrical shape with a gap; wherein, this breach is used as the sucker rod entry, can enter into in base 11's drum through this breach sucker rod, so that base 11's center pin and beam-pumping unit well head packing box's center pin, the center pin of sucker rod can accomplish to arrange with one heart, so, base 11 sits and can guarantee that base 11 is located sucker rod polished rod checkpost perpendicularly under on beam-pumping unit well head packing box, on the other hand base 11 is the biggest with beam-pumping unit well head packing box's area of contact, guarantee base 11's firm degree, thereby ensure the stationarity of uninstallation operation.
Preferably, set up second security protection mechanism on base 11, this second security protection mechanism is used for the shutoff breach so that base 11 takes place the skew phenomenon because of the device below so that the sucker rod of below inclines out from base 11 breach, finally leads to base 11 to drop from beam-pumping unit well head packing box. Because the width of the gap is larger than the diameter of the sucker rod, once the base 11 is not firmly contacted with the packing box and the lateral inclination phenomenon occurs, the sucker rod is easy to laterally go out of the gap.
In fig. 1 and 3, the second security mechanism comprises an arc plate 18, the arc plate 18 is connected with a sliding pin 8, and a horizontal hole 9 is formed on a base 11; the arc plate 18 is arranged in the inner cylinder of the base 11, and the sliding pin 8 extends out of the horizontal hole 9; the sliding pin 8 moves along the horizontal hole 9 to drive the arc-shaped plate 18 to rotate in the base 11; the gap can be opened or closed as a result of rotation of the arcuate plate 18 within the base 11. When the gap is closed, the base 11 is in an annular closed state, the sucker rod cannot laterally extend out of the base 11, and the base 11 cannot fall off from the packing box when the lower side of the base 11 is laterally inclined.
In order to further ensure that the arc-shaped plate 18 can not rotate any more after the notch is closed, a locking hole is arranged at one end of the horizontal hole 9 of the base 11, the locking hole is a longitudinal hole, the width of the locking hole corresponds to the diameter of the sliding pin 8, namely when the sliding pin 8 moves from the horizontal hole 9 to the locking hole, the sliding pin 8 can not move horizontally, and meanwhile, the arc-shaped plate 18 can not rotate, so that the purpose of locking the notch is achieved.
Because the load of the pumping unit is large, the supporting plate 13 is required to bear the pressure equivalent to the load of the pumping unit according to the relation between the acting force and the reacting force during the unloading process, in order to enhance the bearing capacity of the supporting plate 13, a reinforcing plate 7 is arranged at the bottom of the supporting plate 13, and the supporting strength of the supporting plate 13 is enhanced through the reinforcing plate 7.
In fig. 1, a cover plate 16 is attached to the upper side of the support plate 13, and a gear drive assembly is attached between the cover plate 16 and the support plate 13. Specifically, wheel shafts of a driving wheel 6, an intermediate wheel 17 and a driven wheel 15 in the gear driving assembly are all fixed between a cover plate 16 and a support plate 13; the cover plate 16 and the support plate 13 are connected into a whole through bolts, and the levelness of the cover plate 16 can be adjusted by respectively adjusting nuts below the support plate 13, so that the transmission matching sensitivity of the gear driving component is indirectly ensured.
The gear driving component is provided with an interface 4, and is connected with driving equipment through the interface 4; the driving device applies a rotary driving force to the driving wheel 6 in the gear driving assembly, the driving wheel 6 further transmits the rotary driving force to the nut 5 in the screw rod transmission assembly through the intermediate wheel 17 and the driven wheel 16, then the nut 5 converts the rotary driving force into a linear driving force, and the linear driving force drives the screw rod 3 to move linearly upwards. Specifically, the interface 4 is a structure disposed above the axle of the driving wheel 6, for example, the structure is in a shape corresponding to the bayonet of a manual wrench, so that the manual wrench is connected with the structure to apply a rotational driving force to the driving wheel 6. For example, the structure is a structure consistent with a bayonet of an electric rotary tool, the electric rotary tool drives the driving wheel 6 to rotate, and a rotary driving force is applied to the driving wheel 6; of course, the interface 4 may adopt any structure form in the prior art, as long as the interface 4 can be abutted with any automatic, manual or electric equipment and tool in the prior art, so as to achieve the purpose of driving the wheel axle of the driving wheel 6 to rotate.
In fig. 1, the bottom of the base 11 is provided with an edge 12, and the contact area between the base 11 and the wellhead packing box of the pumping unit can be increased through the edge 12 so as to increase the stability of the base 11.
In a word, the uninstallation device of this embodiment has set up a plurality of structural design and the mechanism design that increase the device security to ensure the steadiness and the security of uninstallation in-process device, any other equipment on sucker rod and the well head can not be harmd in the uninstallation process, really accomplish safe uninstallation and the controllable uninstallation of beam-pumping unit load, simultaneously, device simple structure, convenient operation, it is convenient to use, has very strong practicality.
The above-mentioned embodiments are merely embodiments for expressing the invention, and the description is specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, various changes, substitutions of equivalents, improvements and the like can be made without departing from the spirit of the invention, and these are all within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (7)
1. A load safety unloading device of a pumping unit is characterized by comprising:
a top drive mechanism and a support mechanism;
the supporting mechanism is seated on a wellhead packing box of the oil pumping unit;
the top drive mechanism is connected to the support mechanism;
the supporting mechanism is used for supporting the top driving mechanism so that the top driving mechanism is erected under a polished rod clamp of the oil pumping unit;
the top drive mechanism is used for applying a straight upward acting force to the polish rod clamp of the oil pumping unit;
the acting force is used for unloading the load of the oil pumping unit;
the top driving mechanism comprises a gear driving mechanism and a screw rod transmission assembly;
the gear driving mechanism is used for applying a rotary driving force to the screw rod transmission assembly;
the screw rod transmission assembly is used for converting the rotary driving force into the linear upward acting force;
the gear driving mechanism comprises a driving wheel (6) and a driven wheel (15);
the driving wheel (6) is used for transmitting the rotary driving force to the driven wheel (15);
the driven wheel (15) is used for transmitting the rotary driving force to the screw rod transmission assembly;
the gear driving mechanism also comprises an intermediate wheel (17);
the intermediate wheel (17) is in gear transmission with the driving wheel (6) and the driven wheel (15) respectively;
the intermediate wheel (17) is used for improving the output torque of the driving wheel (6);
the driven wheel (15) is connected with a bearing (14);
the bearing (14) is used for improving the rotation flexibility of the driven wheel (15);
the screw rod transmission assembly comprises a spiral screw rod (3) and a nut (5);
the nut (5) is fixedly connected with the driven wheel (15);
the driven wheel (15) for transmitting the rotational driving force to the nut (5);
the nut (5) is used for converting the rotary driving force into an acting force of the screw rod (3) which is linearly upward;
the screw rod (3) is used for transmitting the linear upward acting force to the polish rod clip of the oil pumping unit;
a pressure-bearing top plate (1) is connected above the screw rod (3);
the pressure-bearing top plate (1) is used for uniformly transmitting the linear upward acting force to the polish rod clamp of the oil pumping unit;
the supporting mechanism comprises a base (11) and a supporting plate (13);
the gear driving mechanism and the screw rod transmission assembly are connected to the supporting plate (13);
the base (11) is used for supporting the supporting plate (13) so that the gear driving mechanism and the screw rod transmission assembly stand under a polish rod clamp of the oil pumping unit;
a cover plate (16) is connected above the supporting plate (13);
the gear drive mechanism is connected between the cover plate (16) and the support plate (13);
the gear driving mechanism is provided with an interface (4);
the interface (4) is used for connecting a driving device;
the drive device is configured to apply the rotational drive force to the gear drive mechanism.
2. The device for safely unloading a load of a pumping unit according to claim 1, wherein:
the bottom of the spiral screw rod (3) is connected with a limiting cap (10);
the limiting cap (10) is used for limiting the spiral screw rod (3) to be separated from the nut (5).
3. The load safety unloading device of the oil pumping unit according to claim 1, characterized in that:
the pressure bearing top plate (1) is provided with a notch;
the opening is used for accommodating the sucker rod;
a first security mechanism is arranged on the outer side of the opening;
the first security mechanism comprises a lock pin (2);
the lock pin (2) is used for opening or closing the gap.
4. The load safety unloading device of the oil pumping unit according to claim 1, characterized in that:
the base (11) is cylindrical with a notch;
the gap is used as an inlet of a sucker rod so that the base (11) can be seated on the wellhead packing box of the pumping unit;
a second security mechanism is arranged on the base (11);
and the second security mechanism is used for plugging the gap so as to prevent the base (11) from falling off from the wellhead packing box of the pumping unit.
5. The load safety unloading device of the oil pumping unit according to claim 4, characterized in that:
the second security mechanism comprises an arc-shaped plate (18);
the arc-shaped plate (18) is connected with a sliding pin (8);
a horizontal hole (9) is formed in the base (11);
the arc-shaped plate (18) is arranged in the base (11);
the sliding pin (8) moves along the horizontal hole (9) to drive the arc-shaped plate (18) to rotate in the base (11);
the rotation is used for opening or closing the notch by the arc-shaped plate (18).
6. The load safety unloading device of the oil pumping unit according to claim 1, characterized in that:
a reinforcing plate (7) is arranged at the bottom of the supporting plate (13);
the reinforcing plate (7) is used for increasing the supporting strength of the supporting plate (13).
7. The load safety unloading device of the oil pumping unit according to claim 4, characterized in that:
the bottom of the base (11) is provided with an edge (12);
the edge (12) is used for increasing the contact area of the base (11) and the wellhead packing box of the oil pumping unit so as to increase the stability of the base (11).
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| CN202010524295.8A CN111691857B (en) | 2020-06-10 | 2020-06-10 | Load safety unloading device of oil pumping unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010524295.8A CN111691857B (en) | 2020-06-10 | 2020-06-10 | Load safety unloading device of oil pumping unit |
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| CN111691857B true CN111691857B (en) | 2022-07-08 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1442101A (en) * | 1973-06-14 | 1976-07-07 | Sundstrand Syracuse | Grinding machines |
| CN201173099Y (en) * | 2008-04-03 | 2008-12-31 | 中国石油天然气股份有限公司 | Oil pumping machine unloading and calibration device |
| CN203050608U (en) * | 2012-11-28 | 2013-07-10 | 中国石油天然气股份有限公司 | Underground electric control compression packer |
| CN203394446U (en) * | 2013-06-06 | 2014-01-15 | 中国石油天然气股份有限公司 | Load discharger of oil pumping unit |
-
2020
- 2020-06-10 CN CN202010524295.8A patent/CN111691857B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1442101A (en) * | 1973-06-14 | 1976-07-07 | Sundstrand Syracuse | Grinding machines |
| CN201173099Y (en) * | 2008-04-03 | 2008-12-31 | 中国石油天然气股份有限公司 | Oil pumping machine unloading and calibration device |
| CN203050608U (en) * | 2012-11-28 | 2013-07-10 | 中国石油天然气股份有限公司 | Underground electric control compression packer |
| CN203394446U (en) * | 2013-06-06 | 2014-01-15 | 中国石油天然气股份有限公司 | Load discharger of oil pumping unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111691857A (en) | 2020-09-22 |
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