CN110380570B - Direct driving device for oil pumping unit - Google Patents
Direct driving device for oil pumping unit Download PDFInfo
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- CN110380570B CN110380570B CN201910660700.6A CN201910660700A CN110380570B CN 110380570 B CN110380570 B CN 110380570B CN 201910660700 A CN201910660700 A CN 201910660700A CN 110380570 B CN110380570 B CN 110380570B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/102—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention belongs to the field of oil field oil extraction equipment, and particularly relates to a direct drive device of an oil pumping unit, which comprises a shell, a stator and a rotor, wherein the stator is fixedly arranged on the shell, the rotor is supported in the center of the stator by a rotor shaft, two ends of the shell are respectively provided with an end cover, the two end covers and the shell jointly enclose a shell of the direct drive device of the oil pumping unit, and the direct drive device of the oil pumping unit also comprises a speed reduction mechanism and a brake mechanism. The invention adopts an integrated design, integrates the motor, the speed reducing mechanism and the braking mechanism on the oil pumping unit into a shell, and the integration is not the stacking of a simple mechanical structure, but organically combines all the mechanisms together, i.e. you in your, i in your have you, and the interaction and the mutual influence are realized. Through the improvement, the structure of the oil pumping unit is greatly simplified, the application of a belt which is a wearing part is avoided, the maintenance period of the oil pumping unit is prolonged, and a large amount of manpower and material resources are saved.
Description
Technical Field
The invention belongs to the field of oil extraction equipment in oil fields, and particularly relates to a direct driving device of an oil pumping unit.
Background
The beam-pumping unit is a commonly used oil exploitation device, the structure of the beam-pumping unit generally comprises a motor, a reducer, a crank, a connecting rod and a beam, in the traditional beam-pumping unit, the power output by the motor is transmitted to an input shaft of the reducer through a belt transmission mechanism, and the structure has the defects that: 1. in the belt transmission mechanism, a belt is a quick-wear part and needs to be replaced frequently, so that the problems of high maintenance cost and high maintenance difficulty of the pumping unit are caused. Therefore, there is a need for a new beam pumping unit to solve the above problems. 2. When the pumping unit is maintained, the pumping unit needs to be reliably braked so as to conveniently overhaul and calibrate each part on the pumping unit, however, when the pumping unit is braked, the final staying position of each movable part on the pumping unit is not very determined, and when the staying position is not ideal, great inconvenience is brought to maintenance work, therefore, after the pumping unit is braked, the staying position of each movable part needs to be finely adjusted in a mode of instantly releasing braking, but the staying position is limited by the physical structure of a braking mechanism on the pumping unit.
Disclosure of Invention
The invention provides a direct drive device of an oil pumping unit, which aims to solve the problems in the background technology.
The technical problem solved by the invention is realized by adopting the following technical scheme:
the invention comprises a shell, a stator and a rotor, wherein the stator is fixedly arranged on the shell, the rotor is supported in the center of the stator by a rotor shaft, two ends of the shell are respectively provided with an end cover, the two end covers and the shell jointly enclose a shell of the direct driving device of the pumping unit, and the direct driving device also comprises a speed reducing mechanism and a braking mechanism;
the speed reducing mechanism comprises a central gear, a planetary gear, a central gear shaft and a planetary gear disc, the planetary gear is respectively meshed with the central gear and a gear ring on the inner side of the shell, the central gear is fixedly connected to the central gear shaft, the planetary gear is installed on the planetary gear disc through the planetary gear shaft, a hollow shaft is processed on the outer side of the planetary gear disc, the outer side of the hollow shaft is installed in a circular hole in the center of the end cover through a bearing and extends out of the end cover, the inner side of the hollow shaft is connected to the outer side of the central gear shaft through a bearing, and a crank of the pumping unit;
the central gear shaft extends out of the end part of the hollow shaft;
the two groups of speed reducing mechanisms are symmetrically arranged at two ends of the shell;
a support plate is fixedly arranged in the middle of the inner side of the shell, and a rotating sleeve is arranged in the center of the support plate through a bearing;
the two pairs of stators and the two pairs of rotors are symmetrically arranged on two sides of the supporting plate, wherein the two stators are fixedly arranged on the inner side of the shell, the two rotors are respectively arranged on the two rotor shafts, one end of each rotor shaft is respectively connected with two ends of the inner hole of the rotating sleeve through a spline, and the other end of each rotor shaft is respectively connected with shaft ends of two central gear shafts in the two sets of speed reducing mechanisms through splines;
the braking mechanism comprises two sets of braking mechanisms, the structure of each braking mechanism comprises an electromagnet, a driving disc and a braking disc, the electromagnet is fixedly connected to the side face of the stator, the electromagnet is positioned between the stator and the speed reducing mechanism, the driving disc is fixedly connected to the side face of the rotor, the driving disc is positioned between the rotor and the speed reducing mechanism, magnetic steel is embedded on one side, facing the electromagnet, of the braking disc, the magnetic steel and the magnetic pole of the electromagnet repel each other, the braking disc is fixedly installed on the rotor shaft, the braking disc is positioned between the rotor and the supporting plate, the edge of the braking disc is a conical surface, braking pads are attached to the conical surface, the shapes of the two sides of the supporting plate are matched with the shapes of the conical surfaces of the two braking discs in the two sets;
springs are sleeved on the two rotor shafts, and the two stators keep the moving trend of approaching the supporting plate under the action of the springs;
two electromagnets in the two sets of braking mechanisms are connected in parallel outside the shell so as to be electrified and powered off at the same time, and two windings in the two stators are connected in parallel outside the shell so as to be electrified and powered off at the same time;
the support plate is made of a copper alloy;
the circumference of the supporting plate is provided with an inserting groove, the shell is provided with a window corresponding to the inserting groove, a radiating block matched with the shape of the inserting groove is inserted into the inserting groove, the radiating block penetrates through the window from the outer side of the shell and then is inserted into the inserting groove, and the radiating block is fixed on the shell through a bolt;
radiating fins are arranged on the outer side of the radiating block;
the heat dissipation block is made of aluminum alloy.
And a brake release switch is connected in series on the cable after the two electromagnets are connected in parallel. The rotor is a permanent magnet rotor. The brake pad is an asbestos brake pad. The magnetic steel is made of neodymium iron boron materials. The copper alloy is ZCuSn10Pb1 cast copper alloy. And a bearing between the hollow shaft and the central gear shaft is a copper bush bearing.
The invention has the beneficial effects that:
1. the invention adopts an integrated design, integrates the motor, the speed reducing mechanism and the braking mechanism on the oil pumping unit into a shell, and the integration is not the stacking of a simple mechanical structure, but organically combines all the mechanisms together, i.e. you in your, i in your have you, and the interaction and the mutual influence are realized. Through the improvement, the structure of the oil pumping unit is greatly simplified, the application of a belt which is a wearing part is avoided, the maintenance period of the oil pumping unit is prolonged, and a large amount of manpower and material resources are saved.
2. The invention adopts a unique braking mechanism, can realize automatic braking when power is off, and can fully ensure the safety after braking.
3. The invention is provided with a brake release switch, the switch controls the on-off of the electromagnet, and the inching control can be carried out on the electromagnet, so that the brake can be released in a short time, the accurate adjustment of the position of each movable component on the oil pumping unit can be realized, the magnetic force of the electromagnet can be changed by adjusting the input current of the electromagnet, the magnetic force must be larger than the resistance of the axial movement of the rotor, the smaller the resultant force of the rotor which is far away from the direction of the supporting plate is, the faster the rotor is reset after inching, and the higher the adjustment. More importantly, in the invention, power can be independently supplied between the stator winding and the electromagnet for releasing the braking state, so that the braking can be released under the condition that the electric mechanism is not started, and each movable component can automatically run to a required position under the action of gravity.
In addition, an electric driving device applied to the oil pumping unit has to have good variable frequency speed regulation performance, and the electromagnet independently supplies power to avoid the influence on the magnetic force of the electromagnet during low frequency, so that the brake disc and the support plate are ensured to be smoothly separated during low rotating speed.
4. The invention has good braking performance and braking release performance: the conical surface is matched for braking, and compared with the existing braking mechanism on the oil pumping unit, the structure is simple, the number of movable parts is small, and therefore braking is very reliable; the electromagnet is adopted to push the rotor to release the brake, and the magnetic force of the electromagnet is in direct proportion to the introduced current, so that the probability that the brake can not be released is very low under the condition of ensuring larger current.
5. The invention adopts a mechanical braking mode to brake, and adopts an electrical mode to release the brake, the mechanical braking ensures the reliability of the brake, and the electrical release of the brake saves more labor in operation.
6. The invention adopts a double-rotor and double-brake design, two rotors respectively correspond to two cranks on the pumping unit, and two sets of brake mechanisms respectively correspond to two rotors.
7. One end of the invention is provided with two mechanical ports, wherein, the low-speed mechanical port is used for driving the crank to rotate, and the high-speed mechanical port is used as a power takeoff for providing power to the outside of the oil pumping machine, thereby facilitating the implementation of other operation contents of a well site.
8. The invention adopts a unique heat dissipation design, and heat generated by the electric mechanism and the braking mechanism during working is dissipated to the outside through the heat dissipation fins on the outer side of the shell on one hand and the heat dissipation blocks inserted on the support plate on the other hand, thereby ensuring that the heat is dissipated in time and avoiding the adverse effect caused by the service life of equipment.
9. The invention adopts a unique speed reducing mechanism, in the speed reducing mechanism, the rotary motion of a central gear shaft is converted into the revolution and rotation motion of a planetary gear through the central gear, the revolution motion of the planetary gear is converted into the rotary motion of a planetary gear disc, the rotary motion of the planetary gear disc is transmitted to the outer side of an end cover through a hollow shaft and is converted into the rotary motion of a crank, so that the speed reducing mechanism and the electric mechanism are organically combined together.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of the heat slug shown in the figure;
fig. 3 is a left side view of fig. 2.
In the figure: 1-end cap, 2-planetary gear plate, 3-planetary gear, 4-planetary gear shaft, 5-magnetic steel, 6-electromagnet, 7-driving plate, 8-stator, 9-rotor, 10-rotor shaft, 11-brake block, 12-supporting plate, 13-rotating sleeve, 14-brake disc, 15-shell, 16-radiating block, 17-spring, 18-central gear, 19-hollow shaft, 20-copper sleeve bearing, 21-central gear shaft, 22-crank, 23-cable, 24-brake release switch and 25-radiating fin.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
the direct drive device comprises a shell 15, a stator 8 and a rotor 9, wherein the stator 8 is fixedly arranged on the shell 15, the rotor 9 is supported in the center of the stator 8 by a rotor shaft 10, two end covers 1 are respectively arranged at two ends of the shell 15, and the two end covers 1 and the shell 15 jointly enclose a shell of the direct drive device of the pumping unit. The above is a common structure in the prior art, and is not described herein again.
As a significant innovation of the invention, the invention also comprises a speed reducing mechanism and a braking mechanism, wherein the integration of the braking mechanism and the electric mechanism of the pumping unit is not existed in the prior pumping unit technology. This kind of integrated form design, motor, reduction gears and the brake mechanism integration on the beam-pumping unit are in a casing 15 to this kind of integration is not simple mechanical structure's heap, but combines each mechanism together organically, and you have me in you, you in me, and interact, the interact. Through the improvement, the structure of the oil pumping unit is greatly simplified, the application of a belt which is a wearing part is avoided, the maintenance period of the oil pumping unit is prolonged, and a large amount of manpower and material resources are saved.
The speed reducing mechanism comprises a sun gear 18, a planetary gear 3, a sun gear shaft 21 and a planetary gear disc 2, wherein the planetary gear 3 is respectively meshed with the sun gear 18 and a gear ring on the inner side of the shell 15, the sun gear 18 is fixedly connected to the sun gear shaft 21, the planetary gear 3 is installed on the planetary gear disc 2 through a planetary gear shaft 4, and the sun gear 18, the planetary gear 3 and the gear ring on the inner side of the shell 15 jointly form a planetary gear train speed reducing mechanism. A hollow shaft 19 is formed on the outer side of the planetary gear plate 2, the outer side of the hollow shaft 19 is installed in a circular hole in the center of the end cover 1 through a bearing and extends out of the end cover 1, and the inner side of the hollow shaft 19 is connected to the outer side of a central gear shaft 21 through a bearing. The present invention employs a unique reduction mechanism in which the rotational motion of the sun gear shaft 21 is converted into the revolution and rotation motion of the planetary gear 3 through the sun gear 18, the revolution motion of the planetary gear 3 is converted into the rotational motion of the planetary gear disk 2, and the rotational motion of the planetary gear disk 2 is transmitted to the outside of the end cover 1 through the hollow shaft 19 and converted into the rotational motion of the crank 22, so that the reduction mechanism and the electric mechanism are organically combined together.
In the operation and maintenance process of the pumping well, the operation processes of the well and the underground are various, but most of the processes need to be provided with power sources. In the prior art, because the power of a motor on the oil pumping unit cannot be utilized during operation, an operator only can prepare a motor or a diesel engine as a power source, so that the number of equipment is increased, and the maintenance, transportation and storage costs of the equipment are increased. In the present application, the central gear shaft 21 extends from the end of the hollow shaft 19, so that two ends of the present invention are provided with two mechanical ports, wherein a low-speed mechanical port is used for driving the crank 22 to rotate, so as to ensure the normal operation of the pumping unit, and a high-speed mechanical port is used as a power takeoff for providing power to the outside of the pumping unit, thereby not only fully utilizing the self-contained electric mechanism of the pumping unit, but also reducing the number of devices and reducing the use and maintenance cost of the devices.
In the specific implementation process, a clutch (the clutch can be a manual clutch, an electric clutch and the like, and the type is not limited) can be arranged at the joint of the crank 22 and the hollow shaft 19, after the pumping unit is braked, the horsehead, the walking beam, the connecting rod, the crank 22 and the balance block of the pumping unit are in a gravity self-balancing position, potential safety hazards caused by continuous movement of the horsehead, the walking beam, the connecting rod, the crank 22 and the balance block after the clutch is separated are avoided, then the clutch is adjusted to a separated state, the power connection between the oil pumping unit and the crank 22 is cut off, and at the moment, after the oil pumping unit is started again, external power can be provided for well site operation in a stop state.
The two groups of speed reducing mechanisms are symmetrically arranged at two ends of the shell 15 and respectively provide power for the two cranks 22.
A support plate 12 is fixedly installed in the middle of the inner side of the shell 15, and a rotary sleeve 13 is installed in the center of the support plate 12 through a bearing. Stator 8 and rotor 9 total two pairs, and two pairs of stator 8 rotor 9 symmetries set up the both sides of backup pad 12, and wherein, two stator 8 fixed mounting are inboard at casing 15, and two rotors 9 are installed respectively on two rotor shafts 10, the one end of every rotor shaft 10 respectively through the spline with the both ends of rotatory cover 13 hole are connected, the other end of every rotor shaft 10 respectively through the spline with two central gear axle 21's in two sets of reduction gears shaft head connection. The braking mechanisms are provided with two sets.
In the prior art, the brake mechanism of the pumping unit is only arranged at one end of the brake shaft, and when braking, the resistance from the two cranks 22 acts on one end of the brake shaft in an extremely unbalanced manner, so that not only can huge impact be caused on the brake shaft, but also the brake response time is long. The invention adopts the design of double rotors 9 and double braking, the two rotors 9 respectively correspond to the two cranks 22 on the oil pumping unit, and the two sets of braking mechanisms respectively correspond to the two rotors 9, so that compared with the unilateral braking on the traditional oil pumping unit, the invention not only has faster braking response, but also has small impact on mechanical structures during braking.
The structure of the brake mechanism comprises an electromagnet 6, a drive disc 7 and a brake disc 14, wherein the electromagnet 6 is fixedly connected to the side surface of a stator 8, the position of the electromagnet is between the stator 8 and a speed reducing mechanism, the drive disc 7 is fixedly connected to the side surface of a rotor 9, the position of the drive disc is between the rotor 9 and the speed reducing mechanism, one side, facing the electromagnet 6, of the brake disc 14 is embedded with a magnetic steel 5, the magnetic steel 5 and the magnetic pole of the electromagnet 6 repel each other, the brake disc 14 is fixedly arranged on a rotor shaft 10, the position of the brake disc 14 is between the rotor 9 and a support plate 12, the edge of the brake disc 14 is a conical surface, a brake pad 11 is attached to the conical surface, the shapes of two sides of the support plate 12 are matched with the shapes of the conical surfaces of the two brake discs 14 in the two sets of brake mechanisms, when braking is carried, The rotor shaft 10 and the brake disc 14 slide together with the driving disc 7, and the two brake pads 11 are respectively attached to the conical surfaces on the two sides of the supporting plate 12 to realize the braking of the rotor shaft 10.
The invention adopts a novel braking mode combining electricity and machinery, brakes through the mechanical braking mode, and releases the braking through the electrical mode. The invention adopts a unique braking mechanism, can realize automatic braking when power is off, and can fully ensure the safety after braking. The invention has good braking performance and braking release performance: the conical surface is adopted for braking, and compared with the existing connecting rod braking mechanism on the oil pumping unit, the structure is simple, the number of movable parts is small, and therefore braking is very reliable; the electromagnet 6 is adopted to push the rotor 9 to release the brake, and the magnetic force of the electromagnet 6 is in direct proportion to the current which is applied, so that the probability that the brake can not be released is very low under the condition of ensuring larger current.
The two rotor shafts 10 are sleeved with springs 17, and the two stators 8 keep the movement trend close to the support plate 12 under the action of the springs 17, so that the rotor shafts 10 are quickly reset after power failure, and smooth implementation of braking is guaranteed.
Two electromagnets 6 in the two sets of braking mechanisms are connected in parallel outside the shell 15 so as to be electrified and cut off simultaneously, and two windings in the two stators 8 are connected in parallel outside the shell 15 so as to be electrified and cut off simultaneously;
the circumference of the supporting plate 12 is provided with a slot, the shell 15 is provided with a window corresponding to the slot, a radiating block 16 matched with the slot in shape is inserted into the slot, the radiating block 16 penetrates through the window from the outer side of the shell 15 and then is inserted into the slot, the radiating block 16 is fixed on the shell 15 through a bolt, and the outer side of the radiating block 16 is provided with a radiating fin 25.
The invention adopts a unique heat dissipation design, and heat generated by the electric mechanism and the braking mechanism during working is dissipated through the heat dissipation fins on the outer side of the shell 15 on one hand and is dissipated to the outside through the supporting plate 12 and the heat dissipation block 16 inserted on the supporting plate 12 on the other hand, thereby ensuring that the heat is dissipated in time and avoiding adverse effects caused by the service life of equipment. Compared with a motor structure adopting a fan for heat dissipation in the prior art, the heat dissipation structure is novel in design, reasonable in structure and simpler in structure under the condition of meeting the heat dissipation requirement. In order to sufficiently ensure the heat dissipation amount in the specific implementation process, the contact area between the heat dissipation block 16 and the support plate 12 should be ensured to the maximum extent, and the surface area of the heat dissipation fins 25 should be ensured.
A brake release switch 24 is connected in series on a cable 23 after the two electromagnets 6 are connected in parallel. The invention is provided with a brake release switch 24, the switch controls the power-on and power-off of the electromagnet 6, and can inching control the electromagnet 6, thereby instantaneously releasing the brake and braking (inching) at the power-off position, realizing the accurate adjustment of the position of each movable part on the oil pumping unit, the magnetic force of the electromagnet 6 can be changed by adjusting the input current of the electromagnet 6, the magnetic force must be larger than the resistance of the axial movement of the rotor 9 to smoothly release the brake, the smaller the resultant force of the rotor 9 in the direction far away from the support plate 12, the smaller the instantaneous kinetic energy absorbed by the rotor 9, the faster the rotor 9 resets after inching, and the higher the adjustment precision. More importantly, in the present invention, power can be independently supplied between the stator 8 winding and the electromagnet 6 for releasing the braking state, so that the braking can be released without starting the electric mechanism, and each movable component can automatically operate to the required position under the action of gravity.
In addition, the electric driving device applied to the pumping unit must have good variable frequency speed regulation performance, and the electromagnet 6 is independently powered to avoid the influence of the magnetic force of the electromagnet 6 at low frequency, so that the brake disc 14 is ensured to be smoothly separated from the support plate 12 at low rotating speed.
The rotor 9 is a permanent magnet rotor 9, the brake pad 11 is an asbestos brake pad 11, both of which are conventional technologies and are not described herein again.
The magnetic steel 5 is made of neodymium iron boron material, which is a rare earth strong magnetic material, and can fully ensure that the brake is smoothly released.
The support plate 12 is made of a copper alloy, which is a zcusin 10Pb1 cast copper alloy, which has high hardness and mechanical cutting property, and also has good heat conductivity, and is particularly suitable as a material for manufacturing the support plate 12 in the present invention.
The bearing between the hollow shaft 19 and the central gear shaft 21 is a copper bush bearing 20, and the copper bush bearing 20 is a self-lubricating bearing and has a small radial thickness, and is particularly suitable for being applied to the bearing.
Claims (7)
1. The utility model provides a beam-pumping unit direct drive device, includes casing (15), stator (8) and rotor (9), and stator (8) fixed mounting is on casing (15), and rotor (9) are supported at the central authorities of stator (8) by rotor shaft (10), and the both ends of casing (15) respectively are provided with one end cover (1), and two end covers (1) enclose with casing (15) jointly the shell of beam-pumping unit direct drive device, its characterized in that: the device also comprises a speed reducing mechanism and a braking mechanism;
the speed reducing mechanism comprises a central gear (18), a planetary gear (3), a central gear shaft (21) and a planetary gear disc (2), the planetary gear (3) is respectively meshed with the central gear (18) and a gear ring on the inner side of a shell (15), the central gear (18) is fixedly connected to the central gear shaft (21), the planetary gear (3) is installed on the planetary gear disc (2) through a planetary gear shaft (4), a hollow shaft (19) is processed on the outer side of the planetary gear disc (2), the outer side of the hollow shaft (19) is installed in a circular hole in the center of the end cover (1) through a bearing and extends out of the end cover (1), the inner side of the hollow shaft (19) is connected to the outer side of the central gear shaft (21) through a bearing, and a crank (22) of the pumping unit is fixedly connected to the extending end;
the central gear shaft (21) extends from the end of the hollow shaft (19);
the two groups of speed reducing mechanisms are symmetrically arranged at two ends of the shell (15);
a support plate (12) is fixedly arranged in the middle of the inner side of the shell (15), and a rotary sleeve (13) is arranged in the center of the support plate (12) through a bearing;
the two pairs of stators (8) and the two pairs of rotors (9) are shared, the two pairs of stators (8) and the two pairs of rotors (9) are symmetrically arranged on two sides of the supporting plate (12), wherein the two stators (8) are fixedly arranged on the inner side of the shell (15), the two rotors (9) are respectively arranged on the two rotor shafts (10), one end of each rotor shaft (10) is respectively connected with two ends of an inner hole of the rotary sleeve (13) through a spline, and the other end of each rotor shaft (10) is respectively connected with shaft ends of two central gear shafts (21) in the two sets of speed reducing mechanisms through splines;
the braking mechanism comprises two sets of braking mechanisms, the structure of each braking mechanism comprises an electromagnet (6), a driving disc (7) and a braking disc (14), the electromagnet (6) is fixedly connected to the side surface of a stator (8), the position of each braking mechanism is located between the stator (8) and a speed reducing mechanism, the driving disc (7) is fixedly connected to the side surface of a rotor (9), the position of each braking disc is located between the rotor (9) and the speed reducing mechanism, magnetic steel (5) is embedded on one side, facing the electromagnet (6), of the braking disc (14), the magnetic poles of the magnetic steel (5) and the electromagnet (6) are mutually exclusive, the braking disc (14) is fixedly arranged on a rotor shaft (10), the position of each braking disc is located between the rotor (9) and a supporting plate (12), the edge of each braking disc (14) is a conical surface, a braking pad (11) is attached to each conical surface, the shapes of two sides of the supporting plate (, the two brake pads (11) are respectively attached to the two sides of the support plate (12) to brake the rotor shaft (10);
springs (17) are sleeved on the two rotor shafts (10), and the two stators (8) keep the moving trend of approaching the support plate (12) under the action of the springs (17);
two electromagnets (6) in the two sets of braking mechanisms are connected in parallel outside the shell (15) so as to be electrified and cut off simultaneously, and two windings in the two stators (8) are connected in parallel outside the shell (15) so as to be electrified and cut off simultaneously;
the support plate (12) is made of a copper alloy;
slots are formed in the circumference of the supporting plate (12), windows are formed in the shell (15) and correspond to the slots, heat dissipation blocks (16) matched with the slots in shape are inserted into the slots, the heat dissipation blocks (16) penetrate through the windows from the outer side of the shell (15) and then are inserted into the slots, and the heat dissipation blocks (16) are fixed to the shell (15) through bolts;
the outer side of the heat dissipation block (16) is provided with heat dissipation fins (25);
the heat dissipation block (16) is made of an aluminum alloy.
2. The direct drive device of a pumping unit according to claim 1, characterized in that: and a brake release switch (24) is connected in series on a cable (23) formed by connecting the two electromagnets (6) in parallel.
3. The direct drive unit for a pumping unit according to claim 2, wherein: the rotor (9) is a permanent magnet rotor (9).
4. The direct drive unit for a pumping unit according to claim 2, wherein: the brake block (11) is an asbestos brake block (11).
5. The direct drive device of a pumping unit according to claim 1, characterized in that: the magnetic steel (5) is made of neodymium iron boron materials.
6. The direct drive device of a pumping unit according to claim 1, characterized in that: the copper alloy is ZCuSn10Pb1 cast copper alloy.
7. The direct drive device of a pumping unit according to claim 1, characterized in that: and a bearing between the hollow shaft (19) and the central gear shaft (21) is a copper bush bearing (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910660700.6A CN110380570B (en) | 2019-07-22 | 2019-07-22 | Direct driving device for oil pumping unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910660700.6A CN110380570B (en) | 2019-07-22 | 2019-07-22 | Direct driving device for oil pumping unit |
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| Publication Number | Publication Date |
|---|---|
| CN110380570A CN110380570A (en) | 2019-10-25 |
| CN110380570B true CN110380570B (en) | 2020-04-14 |
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| CN201910660700.6A Active CN110380570B (en) | 2019-07-22 | 2019-07-22 | Direct driving device for oil pumping unit |
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| CN111086952B (en) * | 2019-12-26 | 2021-06-01 | 湖南中联重科建筑起重机械有限责任公司 | Brake assembly, rotary motor and crane |
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| EP2209994B1 (en) * | 2007-10-15 | 2018-04-11 | Unico, Inc. | Cranked rod pump apparatus and method |
| CN201650233U (en) * | 2010-03-26 | 2010-11-24 | 胜利油田盛运机械制造有限公司 | Oil extractor direct-connection all-in-one machine |
| CN202364052U (en) * | 2011-12-09 | 2012-08-01 | 河南长江石油机械有限公司 | Driving mechanism of tower-frame-type oil extractor |
| CN102562003B (en) * | 2012-01-16 | 2014-12-10 | 西安交通大学 | Servo direct-driven oil pumping unit |
| CN102868270B (en) * | 2012-09-20 | 2014-05-07 | 北京交通大学 | Double-stator electrically-driven/power-generating joint operation device with wind turbine |
| CN102868267B (en) * | 2012-09-28 | 2015-06-17 | 北京交通大学 | Multi-power solid rotor and laminated rotor tandem type permanent magnet synchronous motor system |
| CN204030854U (en) * | 2014-08-08 | 2014-12-17 | 彭刚 | Oil pumper machine power drags energy-saving and power generation device |
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2019
- 2019-07-22 CN CN201910660700.6A patent/CN110380570B/en active Active
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Effective date of registration: 20200317 Address after: 163000 Guangfeng street, Guangfeng District, Daqing, Heilongjiang Province, No. 23-2 Guangming Street Applicant after: DAQING HUAYU PETROLEUM MACHINERY MANUFACTURING Co.,Ltd. Address before: 163000 Guangming industrial town, Longfeng District, Heilongjiang, Daqing Applicant before: Wei Liangyan |
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