CN117477849B - Permanent magnet semi-direct driving device of pumping unit - Google Patents
Permanent magnet semi-direct driving device of pumping unit Download PDFInfo
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- CN117477849B CN117477849B CN202311827663.6A CN202311827663A CN117477849B CN 117477849 B CN117477849 B CN 117477849B CN 202311827663 A CN202311827663 A CN 202311827663A CN 117477849 B CN117477849 B CN 117477849B
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- oil
- movable sleeve
- rotor
- motor
- input shaft
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- 238000005086 pumping Methods 0.000 title claims abstract description 20
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 23
- 239000003921 oil Substances 0.000 claims description 150
- 239000010687 lubricating oil Substances 0.000 claims description 33
- 230000007246 mechanism Effects 0.000 claims description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 abstract description 17
- 230000002159 abnormal effect Effects 0.000 abstract description 5
- 230000003044 adaptive effect Effects 0.000 abstract description 4
- 238000007667 floating Methods 0.000 abstract description 4
- 238000005461 lubrication Methods 0.000 description 12
- 230000005540 biological transmission Effects 0.000 description 6
- 239000000243 solution Substances 0.000 description 4
- 239000000945 filler Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/126—Adaptations of down-hole pump systems powered by drives outside the borehole, e.g. by a rotary or oscillating drive
- E21B43/127—Adaptations of walking-beam pump systems
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/161—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at both ends of the rotor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
-
- 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
- H02K7/12—Structural association with clutches, brakes, gears, pulleys or mechanical starters with auxiliary limited movement of stators, rotors or core parts, e.g. rotors axially movable for the purpose of clutching or braking
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention relates to the technical field of motors and discloses a permanent magnet semi-direct drive driving device of an oil pumping unit, which comprises a motor, a speed reducer and a base bracket, wherein the motor and the speed reducer are both arranged on the base bracket; the motor comprises a shell, wherein a stator and a rotor are arranged in the shell, a mounting hole is formed in the middle of the rotor, a plurality of movable grooves are formed in the circumferential direction of the inner side of the mounting hole, a movable sleeve is movably arranged in the inner axial direction of the mounting hole, a plurality of fixing blocks corresponding to the movable grooves one by one are fixedly connected in the circumferential direction of the movable sleeve, and the fixing blocks are located in the movable grooves. According to the invention, the input shaft of the speed reducer and the rotor of the motor are mounted together through the movable sleeve, and the movable sleeve is in floating mounting mode, so that when the input shaft generates axial displacement, the movable sleeve can generate adaptive displacement, thereby preventing the influence of the axial displacement of the input shaft on the rotor, and avoiding abnormal conditions such as vibration, noise increase and displacement of the rotor in the motor.
Description
Technical Field
The invention relates to the field of motors, in particular to a permanent magnet semi-direct drive driving device of an oil pumping machine.
Background
As the oil field development goes into the middle and later stages, the energy consumption and the cost are higher and higher, and the beam pumping unit is still used as main extraction equipment nowadays. In the past, beam pumping unit has three driving links of motor, belt drive device, reducing gear box, because its wearability of belt is relatively poor, and long-term tension-compression effect, transmission power loss is great, and transmission efficiency only 74.2% -95.0%, and the life-span is shorter, need periodic shutdown change.
Therefore, a mode of omitting a belt transmission device and directly connecting a motor with an input shaft of a reduction gearbox is adopted to solve the problems. The motor is not directly connected with the load (the motor is directly connected with the load and is called as a direct-drive driving device), but a belt transmission device is omitted, so that the motor is called as a semi-direct-drive driving device. The semi-direct-drive driving device adopted by the beam pumping unit generally adopts a permanent magnet semi-direct-drive motor, has the characteristic of low speed and large torque, and utilizes an ultrathin machine body (160 mm) to realize natural cooling, so that the energy consumption is low and the reliability is high.
In actual use, the motor and the speed reducer are simultaneously arranged on the base bracket, and in the running process of the beam pumping unit, the load of the semi-direct-drive driving device is not constant due to the arrangement of the crank and the balance weight, namely, the load is larger if the crank and the balance weight rotate upwards and obviously reduced if the crank and the balance weight rotate downwards when the output shaft of the semi-direct-drive driving device rotates for one circle. The motor and the speed reducer are arranged on the base bracket, but the vibration of the motor and the speed reducer are inconsistent, that is, axial relative displacement can be generated between the rotor of the motor and the input shaft of the speed reducer in the running process, abnormal conditions such as vibration, noise increase and the like of the motor can be caused, and even the problem of winding burning occurs.
Disclosure of Invention
The invention provides a permanent magnet semi-direct drive driving device of an oil pumping unit, which solves the technical problems that in the prior art, axial relative displacement can be generated between a rotor of a motor and an input shaft of a speed reducer, abnormal conditions such as vibration, noise increase and the like of the motor can occur, and even windings are burnt.
The invention provides a permanent magnet semi-direct drive driving device of an oil pumping unit, which comprises a motor, a speed reducer and a base bracket, wherein the motor and the speed reducer are both arranged on the base bracket; the motor comprises a shell, wherein a stator and a rotor are arranged in the shell, a mounting hole is formed in the middle of the rotor, a plurality of movable grooves are formed in the circumferential direction of the inner side of the mounting hole, a movable sleeve is movably arranged in the inner axial direction of the mounting hole, a plurality of fixed blocks which correspond to the movable grooves one by one are fixedly connected in the circumferential direction of the movable sleeve, the fixed blocks are positioned in the movable grooves, and the side walls of the movable grooves are attached to the side walls of the fixed blocks; the speed reducer is provided with an input shaft which is fixedly inserted into the movable sleeve, so that when the rotor rotates, power is transmitted to the input shaft through the movable sleeve.
In a preferred embodiment, the movable sleeve is provided with oil delivery channels corresponding to the fixed blocks one by one, each oil delivery channel comprises an axial oil channel, each axial oil channel is arranged in the axial direction of the movable sleeve, each fixed block is provided with a radial oil channel along the radial direction of the movable sleeve, the side wall of each fixed block is provided with an oil filling hole penetrating through the fixed block, each axial oil channel, each radial oil channel and each oil filling hole are communicated, each movable sleeve is provided with an oil filling mechanism, and the oil filling mechanisms are used for sequentially filling lubricating oil from the corresponding axial oil channel, each radial oil channel and each oil filling hole to the joint surface of each movable groove and the side wall of each fixed block.
In a preferred embodiment, the oiling mechanism comprises an annular oil tank, the annular oil tank is fixedly sleeved on the outer side of the movable sleeve, an oil cavity is formed in the annular oil tank and communicated with the axial oil duct, a working cavity is formed in one side of the annular oil tank, a piston is arranged in the working cavity, elastic components are further arranged in the working cavity, two ends of the elastic components are respectively pressed with the piston and the end part of the working cavity, the elastic components are used for enabling the piston to reset in a direction away from the oil cavity, and a component for driving the piston to move in the direction of the oil cavity is arranged on the motor.
In a preferred embodiment, the means for driving the piston to move in the direction of the oil chamber is a drive ring which is located outside the movable sleeve and is fixedly mounted on the motor, the drive ring having a circumferentially arranged concave-convex surface towards the outer wall of the oil filling mechanism, the end of the piston sliding on the concave-convex surface.
In a preferred embodiment, a steel ball is rotatably mounted on one side of the piston adjacent to the drive ring, and when the movable sleeve rotates, the movable sleeve drives the piston to rotate through the annular oil tank, so that the steel ball rolls on the concave-convex surface.
In a preferred embodiment, the radial oil passage penetrates through the outer side wall of the fixed block along the radial direction of the movable sleeve, a one-way valve is mounted at the end of the radial oil passage, which is close to the outer side wall of the fixed block, and lubricating oil can enter the radial oil passage from the one-way valve.
In a preferred embodiment, an oil storage tank is arranged between the top wall of the fixed block and the top wall of the movable tank, and a first gap and a second gap are respectively arranged between two ends of the fixed block and two ends of the mounting hole.
In a preferred embodiment, the end of the mounting hole far away from one end of the input shaft is fixedly provided with a cover plate, the middle part of the cover plate is provided with an oil pipe, one end of the input shaft close to the cover plate is provided with an inner hole, and the oil pipe extends into the inner hole.
In a preferred embodiment, a second end cover is mounted at one end of the casing far away from the input shaft, a first end cover is mounted at one end of the casing near the input shaft, an oil storage space is formed between the second end cover and the cover plate, and an oil outlet nozzle is mounted at the bottom of the second end cover.
In a preferred embodiment, the two ends of the middle part of the rotor extend into the two side walls of the casing respectively, the outer sides of the two ends of the rotor are sleeved with bearings, and the rotor is mounted on the motor through the bearings.
The invention has the beneficial effects that:
1. according to the invention, the input shaft of the speed reducer and the rotor of the motor are mounted together by using the movable sleeve, and the movable sleeve is mounted in a floating manner, so that the movable sleeve can perform adaptive displacement when the input shaft generates axial displacement, thereby preventing the influence of the axial displacement of the input shaft on the rotor and avoiding abnormal conditions such as vibration, noise increase and displacement of the rotor in the motor.
2. According to the invention, through the arrangement of the movable sleeve, the oiling mechanism and the driving ring, lubricating oil can be injected into the mutually-adhered surfaces of the fixed block and the movable groove for lubrication, and the repeated use of the lubricating oil can be realized, so that the long-time lubrication can be kept under the condition of no shutdown.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a front view of the present invention.
Fig. 3 is a partial cross-sectional view of the present invention.
Fig. 4 is a schematic view of the structure of the stator and rotor of the present invention.
Fig. 5 is a partial exploded view of fig. 4 in accordance with the present invention.
Fig. 6 is a partial schematic view of the structure of fig. 3 according to the present invention.
Fig. 7 is a partial schematic view of the structure of fig. 6 according to the present invention.
Fig. 8 is a partial schematic view of the structure of fig. 7 according to the present invention.
Fig. 9 is a schematic view of the structure of the movable sleeve of the present invention.
Fig. 10 is a cross-sectional view of the activity cover of the present invention.
Fig. 11 is a schematic structural view of the driving ring of the present invention.
In the figure: 1. a motor; 11. a housing; 12. a stator; 13. a rotor; 131. a mounting hole; 132. a movable groove; 14. an end cover I; 15. an end cover II; 2. a speed reducer; 21. an input shaft; 211. an inner bore; 3. a base bracket; 4. a movable sleeve; 41. a fixed block; 42. an oil delivery passage; 421. an axial oil passage; 422. a radial oil passage; 423. an oil filling hole; 424. blocking; 5. an oil storage tank; 51. a first gap; 52. a second gap; 6. an oiling mechanism; 60. a one-way valve; 61. an annular oil tank; 62. an oil chamber; 63. a working chamber; 64. a piston; 641. a steel ball; 65. an elastic member; 7. a drive ring; 71. a concave-convex surface; 8. a cover plate; 81. an oil pipe; 9. and an oil outlet nozzle.
Detailed Description
The subject matter described herein will now be discussed with reference to example embodiments. It is to be understood that these embodiments are merely discussed so that those skilled in the art may better understand and implement the subject matter described herein and that changes may be made in the function and arrangement of the elements discussed without departing from the scope of the disclosure herein. Various examples may omit, replace, or add various procedures or components as desired. In addition, features described with respect to some examples may be combined in other examples as well.
As shown in fig. 1-11, the permanent magnet semi-direct drive driving device of the pumping unit comprises a motor 1, a speed reducer 2 and a base bracket 3, wherein the motor 1 and the speed reducer 2 are both arranged on the base bracket 3;
the motor 1 comprises a shell 11, wherein a stator 12 and a rotor 13 are arranged in the shell 11, a mounting hole 131 is formed in the middle of the rotor 13, a plurality of movable grooves 132 are formed in the circumferential direction of the inner side of the mounting hole 131, a movable sleeve 4 is movably arranged in the inner axial direction of the mounting hole 131, a plurality of fixed blocks 41 which are in one-to-one correspondence with the movable grooves 132 are fixedly connected in the circumferential direction of the movable sleeve 4, the fixed blocks 41 are positioned in the movable grooves 132, and the side walls of the movable grooves 132 are attached to the side walls of the fixed blocks 41;
the reduction gear 2 has an input shaft 21, and the input shaft 21 is fixedly inserted into the movable sleeve 4, so that power is transmitted to the input shaft 21 through the movable sleeve 4 when the rotor 13 rotates.
In the above technical solution, when the motor 1 is a permanent magnet semi-direct drive motor, during assembly, the movable sleeve 4 is firstly mounted on the input shaft 21 of the speed reducer 2 through a flat key, then the movable sleeve 4 is floatingly mounted in the mounting hole 131, so that the fixed block 41 is inserted into the movable slot 132, the movable sleeve 4 can move along the axial direction of the rotor 13 during floating mounting, and then the motor 1 and the speed reducer 2 are mounted on the base bracket 3 through bolts. The output shaft of the speed reducer 2 is provided with a crank of the beam pumping unit.
In this embodiment, the implementation manner is specifically as follows: when the motor 1 rotates, the rotor 13 drives the movable sleeve 4 and the input shaft 21 to rotate, so that power is transmitted to the speed reducer 2, and then the crank of the pumping unit can be driven to rotate. During operation, the input shaft 21 will generate axial displacement, and the movable sleeve 4 and the rotor 13 are movably mounted, so that when the input shaft 21 is axially displaced, the movable sleeve 4 will generate adaptive displacement, thereby preventing the influence of the axial displacement of the input shaft 21 on the rotor 13, and the normal power transmission will not be affected because the fixed block 41 is inserted into the movable slot 132.
According to the technical scheme, the input shaft 21 of the speed reducer 2 and the rotor 13 of the motor 1 are mounted together through the movable sleeve 4, and the movable sleeve 4 is mounted in a floating mode, so that when the input shaft 21 generates axial displacement, the movable sleeve 4 can generate adaptive displacement, the influence of the axial displacement of the input shaft 21 on the rotor 13 is prevented, and abnormal conditions such as vibration, noise increase and displacement of the rotor 13 in the motor 1 are avoided.
As shown in fig. 3 and fig. 6-11, in the above technical solution, the movable sleeve 4 and the mounting hole 131 displace, and lubrication is required to be performed on the contact surface, so that dry friction is avoided, and long-time dry friction can not completely attach one surface of the fixed block 41 to the movable groove 132, shake is easy to occur during transmission, and the side walls of the fixed block 41 and the movable groove 132 are attached due to the shorter travel of the movable sleeve 4, so that lubrication is difficult to perform on the contact surface by simply injecting lubrication oil into the mounting hole 131. Specifically, offer on movable sleeve 4 with fixed block 41 one-to-one send oil duct 42, send oil duct 42 includes axial oil duct 421, axial oil duct 421 offers in the axial direction of movable sleeve 4, radial oil duct 422 has been offered along the radial direction of movable sleeve 4 on the fixed block 41, oil filler point 423 that runs through fixed block 41 has been offered on the lateral wall of fixed block 41, axial oil duct 421, radial oil duct 422 and oil filler point 423 intercommunication, be provided with oiling mechanism 6 on the movable sleeve 4, oiling mechanism 6 is used for with lubricating oil from axial oil duct 421, radial oil duct 422 and oil filler point 423 pours into to the faying surface of movable groove 132 and fixed block 41 lateral wall in proper order.
The fixed block 41 and the movable groove 132 are provided with four oil feed channels 42, so that the oil injection mechanism 6 sequentially presses the lubricating oil into the contact surfaces of the fixed block 41 and the movable groove 132 from the axial oil channel 421, the radial oil channel 422 and the oil injection hole 423 during lubrication, so that the lubricating oil is spread on the contact surfaces, the contact surfaces can be lubricated, and two ends of the oil injection hole 423 are respectively positioned on two side walls of the fixed block 41, namely, the two side walls can be lubricated simultaneously.
Specifically, the oiling mechanism 6 comprises an annular oil tank 61, the annular oil tank 61 is fixedly sleeved on the outer side of the movable sleeve 4, an oil cavity 62 is formed in the annular oil tank 61, the oil cavity 62 is communicated with an axial oil duct 421, a working cavity 63 is formed in one side of the annular oil tank 61, a piston 64 is arranged in the working cavity 63, an elastic component 65 is further arranged in the working cavity 63, two ends of the elastic component 65 are respectively pressed with the ends of the piston 64 and the working cavity 63, the elastic component 65 is used for enabling the piston 64 to reset in a direction away from the oil cavity 62, and a component for driving the piston 64 to move in the direction of the oil cavity 62 is arranged on the motor 1.
Since the working chamber 63 communicates with the oil chamber 62, when the piston 64 moves in the direction of the oil chamber 62, the space in which the working chamber 63 communicates with the oil chamber 62 becomes small, and the lubricating oil in the oil chamber 62 is injected into the contact surface between the fixed block 41 and the movable groove 132 from the axial oil passage 421, the radial oil passage 422, and the oil injection hole 423 under the action of pressure. The elastic member 65 employs a compression spring for return after the movement of the piston 64.
Specifically, the means for driving the piston 64 to move in the direction of the oil chamber 62 is a driving ring 7, the driving ring 7 is located outside the movable sleeve 4 and fixedly mounted on the motor 1, the driving ring 7 has a circumferentially arranged concave-convex surface 71 toward the outer wall of the oil injection mechanism 6, and the end portion of the piston 64 slides on the concave-convex surface 71.
Further, a steel ball 641 is rotatably mounted on a side of the piston 64 adjacent to the driving ring 7, and when the movable sleeve 4 rotates, the movable sleeve 4 drives the piston 64 to rotate through the annular oil tank 61, so that the steel ball 641 rolls on the concave-convex surface 71.
It should be noted that, two pistons 64 are provided and are disposed along the radial direction of the input shaft 21 and are respectively located at two symmetrical sides of the movable sleeve 4, during the operation of the motor 1, the driving ring 7 remains stationary, the annular oil tank 61 rotates along with the movable sleeve 4, then the steel balls 641 roll on the concave-convex surface 71, and the concave-convex surface 71 has two symmetrical convex portions, which when in contact with the steel balls 641, can push the pistons 64 to move in the direction of the oil chambers 62, and when the steel balls 641 are separated from the convex portions, the pistons 64 are reset under the action of the elastic members 65.
As shown in fig. 6 to 10, the amount of the lubricating oil in the oil chamber 62 is constant without stopping the feeding, and therefore, the contact surface between the fixed block 41 and the movable groove 132 is frequently filled with oil, which causes a rapid decrease in the amount of the lubricating oil in the oil chamber 62, and is unfavorable for long-term working lubrication. Therefore, the lubricating oil needs to be reused. Specifically, the radial oil passage 422 penetrates the outer side wall of the fixed block 41 in the radial direction of the movable sleeve 4, the end of the radial oil passage 422 near the outer side wall of the fixed block 41 is provided with the check valve 60, and lubricating oil can enter the radial oil passage 422 from the check valve 60.
Further, an oil storage tank 5 is provided between the top wall of the fixed block 41 and the top wall of the movable tank 132, and a first gap 51 and a second gap 52 are provided between the two ends of the fixed block 41 and the two ends of the mounting hole 131, respectively.
During lubrication, more and more lubrication oil is injected into the contact surface between the fixed block 41 and the movable groove 132, and the lubrication oil enters the first gap 51, the second gap 52, and the oil reservoir 5. When the piston 64 is reset, negative pressure is generated in the oil cavity 62, at this time, the check valve 60 is conducted, and the lubricating oil in the movable groove 132 enters the radial oil passage 422 from the position of the check valve 60, thereby realizing the reuse of the lubricating oil.
Since the side walls of the fixed block 41 and the movable groove 132 are in close contact with each other, when the lubricating oil is sucked in, the lubricating oil can be sucked only from the position of the check valve 60, and when the lubricating oil is injected, the check valve 60 is closed, so that the lubricating oil can be injected only from the position of the oil injection hole 423 to the contact surface of the fixed block 41 and the movable groove 132.
In the above technical scheme, through the setting of movable sleeve 4, oiling mechanism 6 and actuating ring 7, not only can realize injecting into the fixed block 41 with the lubrication in the mutual laminating face of movable groove 132, can realize the used repeatedly of lubricating oil moreover for under the condition of not shutting down, can keep long-time lubrication.
It should be added that during the processing of the axial oil passage 421 and the radial oil passage 422, the radial oil passage 422 is drilled with axial holes and radial holes, and the check valve 60 is mounted on the radial oil passage 422, so that the lubricating oil can be prevented from flowing out from the front end of the radial oil passage 422, and the end, far from the motor 1, of the axial oil passage 421 is blocked by the blocking block 424, so that the lubricating oil can be prevented from flowing out from the position.
As shown in fig. 6 to 7, in the above-mentioned technical solution, although the lubricating oil can be recycled, when the lubricating oil in the oil reservoir 5 is small, the amount of the lubricating oil recovered in the radial oil passage 422 is smaller than the amount injected into the contact surface between the fixed block 41 and the movable groove 132, so that the lubricating oil in the second gap 52 is increased, and the lubricating oil in the oil reservoir 5 mainly flows in when the corresponding fixed block 41 rotates downward, so that it is necessary to ensure that the first gap 51 and the second gap 52 have enough lubricating oil to increase the efficiency of recovering the lubricating oil, and for this reason, the cover plate 8 is fixedly mounted at the end of the mounting hole 131 far from the input shaft 21, the oil pipe 81 is provided at the middle part of the cover plate 8, the inner hole 211 is provided at the end of the input shaft 21 near the cover plate 8, and the oil pipe 81 extends into the inner hole 211.
It should be noted that, as shown in fig. 7, only when the amount of the lubricating oil in the gap two 52 is large enough, the lubricating oil enters the inner portion of the inner hole 211 in a large amount, and then flows away from the oil pipe 81 to be recovered.
Further, a second end cover 15 is installed at one end of the casing 11 far away from the input shaft 21, a first end cover 14 is installed at one end of the casing 11 near the input shaft 21, an oil storage space is formed between the second end cover 15 and the cover plate 8, and a nipple 9 is installed at the bottom of the second end cover 15.
In the above technical solution, the driving ring 7 is mounted on the first end cap 14, and the lubricating oil flowing out of the oil pipe 81 enters the oil storage space and then flows out of the oil outlet nozzle 9.
Further, two ends of the middle part of the rotor 13 extend to the inside of two side walls of the casing 11 respectively, bearings are sleeved on the outer sides of the two ends of the rotor 13, and the rotor 13 is mounted on the motor 1 through the bearings.
The ends of the rotor 13 are extended into the side wall of the housing 11, so that the lubricant does not leak into the motor 1 and affect the coil.
The embodiment has been described above with reference to the embodiment, but the embodiment is not limited to the above-described specific implementation, which is only illustrative and not restrictive, and many forms can be made by those of ordinary skill in the art, given the benefit of this disclosure, are within the scope of this embodiment.
Claims (7)
1. The permanent magnet semi-direct drive driving device of the pumping unit is characterized by comprising a motor (1), a speed reducer (2) and a base bracket (3), wherein the motor (1) and the speed reducer (2) are both arranged on the base bracket (3);
the motor (1) comprises a machine shell (11), a stator (12) and a rotor (13) are arranged in the machine shell (11), a mounting hole (131) is formed in the middle of the rotor (13), a plurality of movable grooves (132) are formed in the circumferential direction of the inner side of the mounting hole (131), a movable sleeve (4) is movably arranged in the axial direction of the inner side of the mounting hole (131), a plurality of fixed blocks (41) which are in one-to-one correspondence with the movable grooves (132) are fixedly connected in the circumferential direction of the movable sleeve (4), the fixed blocks (41) are located in the movable grooves (132), and the side walls of the movable grooves (132) are in fit with the side walls of the fixed blocks (41);
the speed reducer (2) is provided with an input shaft (21), and the input shaft (21) is fixedly inserted into the movable sleeve (4), so that when the rotor (13) rotates, power is transmitted to the input shaft (21) through the movable sleeve (4);
the oil feeding mechanism is characterized in that oil feeding channels (42) which are in one-to-one correspondence with the fixed blocks (41) are formed in the movable sleeve (4), the oil feeding channels (42) comprise axial oil channels (421), the axial oil channels (421) are formed in the axial direction of the movable sleeve (4), radial oil channels (422) are formed in the fixed blocks (41) along the radial direction of the movable sleeve (4), oil filling holes (423) penetrating through the fixed blocks (41) are formed in the side walls of the fixed blocks (41), the axial oil channels (421), the radial oil channels (422) and the oil filling holes (423) are communicated, an oil filling mechanism (6) is arranged on the movable sleeve (4), and lubricating oil is sequentially filled into the joint surfaces of the axial oil channels (421), the radial oil channels (422) and the oil filling holes (423) and the side walls of the fixed blocks (41);
the oiling mechanism (6) comprises an annular oil tank (61), the annular oil tank (61) is fixedly sleeved on the outer side of the movable sleeve (4), an oil cavity (62) is formed in the annular oil tank (61), the oil cavity (62) is communicated with an axial oil duct (421), a working cavity (63) is formed in one side of the annular oil tank (61), a piston (64) is arranged in the working cavity (63), an elastic component (65) is further arranged in the working cavity (63), two ends of the elastic component (65) are respectively pressed with the ends of the piston (64) and the end of the working cavity (63), the elastic component (65) is used for enabling the piston (64) to reset in a direction away from the oil cavity (62), and a component for driving the piston (64) to move in the direction of the oil cavity (62) is arranged on the motor (1).
The part for driving the piston (64) to move towards the oil cavity (62) is a driving ring (7), the driving ring (7) is positioned on the outer side of the movable sleeve (4) and fixedly installed on the motor (1), the driving ring (7) is provided with a circumferentially arranged concave-convex surface (71) towards the outer wall of the oil injection mechanism (6), and the end part of the piston (64) slides on the concave-convex surface (71).
2. The permanent magnet semi-direct drive driving device of the pumping unit according to claim 1, wherein a steel ball (641) is rotatably mounted on one side of the piston (64) close to the driving ring (7), and when the movable sleeve (4) rotates, the movable sleeve (4) drives the piston (64) to rotate through the annular oil tank (61), so that the steel ball (641) rolls on the concave-convex surface (71).
3. The permanent magnet semi-direct drive driving device of the pumping unit according to claim 1, wherein the radial oil duct (422) penetrates through the outer side wall of the fixed block (41) along the radial direction of the movable sleeve (4), a one-way valve (60) is arranged at the end part, close to the outer side wall of the fixed block (41), of the radial oil duct (422), and lubricating oil can enter the radial oil duct (422) from the one-way valve (60).
4. A permanent magnet semi-direct drive driving device for an oil pumping unit according to claim 3, wherein an oil storage tank (5) is arranged between the top wall of the fixed block (41) and the top wall of the movable tank (132), and a first gap (51) and a second gap (52) are respectively arranged between two ends of the fixed block (41) and two ends of the mounting hole (131).
5. The permanent magnet semi-direct drive driving device for the pumping unit according to claim 4, wherein a cover plate (8) is fixedly arranged at the end part of the mounting hole (131) far away from one end of the input shaft (21), an oil pipe (81) is arranged in the middle of the cover plate (8), an inner hole (211) is formed in the end, close to the cover plate (8), of the input shaft (21), and the oil pipe (81) stretches into the inner hole (211).
6. The permanent magnet semi-direct drive driving device for the pumping unit according to claim 5, wherein a second end cover (15) is installed at one end, far away from the input shaft (21), of the casing (11), a first end cover (14) is installed at one end, close to the input shaft (21), of the casing (11), an oil storage space is formed between the second end cover (15) and the cover plate (8), and an oil outlet nozzle (9) is installed at the bottom of the second end cover (15).
7. The permanent magnet semi-direct drive driving device for the pumping unit according to claim 6, wherein two ends of the middle part of the rotor (13) respectively extend into two side walls of the casing (11), bearings are sleeved on the outer sides of the two ends of the rotor (13), and the rotor (13) is installed on the motor (1) through the bearings.
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| CN202311827663.6A CN117477849B (en) | 2023-12-28 | 2023-12-28 | Permanent magnet semi-direct driving device of pumping unit |
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| CN202311827663.6A CN117477849B (en) | 2023-12-28 | 2023-12-28 | Permanent magnet semi-direct driving device of pumping unit |
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| CN117477849B true CN117477849B (en) | 2024-03-22 |
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| CN117477849A (en) | 2024-01-30 |
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