CN207989665U - Belt of oil pumping machine identical tension holding meanss - Google Patents
Belt of oil pumping machine identical tension holding meanss Download PDFInfo
- Publication number
- CN207989665U CN207989665U CN201820381327.1U CN201820381327U CN207989665U CN 207989665 U CN207989665 U CN 207989665U CN 201820381327 U CN201820381327 U CN 201820381327U CN 207989665 U CN207989665 U CN 207989665U
- Authority
- CN
- China
- Prior art keywords
- belt
- wheel
- lead screw
- sliding rail
- motor base
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005086 pumping Methods 0.000 title claims abstract description 34
- 230000007246 mechanism Effects 0.000 claims abstract description 19
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 230000005540 biological transmission Effects 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 230000006870 function Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000003321 amplification Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000011835 investigation Methods 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008450 motivation Effects 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 206010044565 Tremor Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000004643 material aging Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Transmission Devices (AREA)
Abstract
The utility model is related to a kind of belt of oil pumping machine identical tension holding meanss in oil production equipment field.Including the sliding rail rack riser that former and later two are slidably matched with base slideway, two slide bars being connected in parallel between two sliding rail rack risers, the motor base with sliding bar cooperation, wherein：The motor base includes that two cross-brace plates with sliding slot are formed with the sliding sleeve for being connected to cross-brace plate both ends, and four sliding sleeves are slidably matched with slide bar composition；Motor base is equipped with linear reciprocation driving mechanism, and the direction of motion of the linear reciprocation driving mechanism is consistent with electric motor belt direction.The device can realize the two big functions that rapid belt replacing is kept with belt identical tension, extend belt service life, realize volume increase, the purpose of synergy.
Description
Technical field
The utility model is related to a kind of belt of oil pumping machine identical tension holding meanss in oil production equipment field.
Background technology
Beam pumping unit is the main oil production equipment of oil exploitation.Double leval jib is formed by walking beam, connecting rod, crank, holder
Mechanism, actuator are motor, and power is transmitted using belt.And in process of production, belt can be due to material aging, mill
It damages and is influenced by environment temperature, performance can be lower and lower, and belt slippage, difficulty in starting, transmission efficiency is caused to reduce, make
Pumping unit is not normally functioning, therefore will be adjusted belt tension after producing a period of time or be replaced belt, is allowed to be driven
Efficiency maximizes.So adjustment belt tension or replacement belt are the work of a conventional type of production crew, it is pumping unit day
One of important process often managed.
Currently, production crew replace, adjustment belt of oil pumping machine it is elastic when, the tool that uses be spanner, pipe wrench, crowbar,
The tools such as jackscrew.Due to the shadow of the factors such as length by sliding rail tabula reinforcing rib, top screw seat openings of sizes and leading screw
It rings, using effect is unsatisfactory.Method of adjustment is original and is not fixed, and relies primarily on operating personnel and uses the tools such as crowbar, sledgehammer
It is operated, it is labor-intensive that there is workers, and the operating time is long, safety difference etc. is unfavorable for factor of production.
On-site investigation：
Investigation one：The replacement that the 601 20 mouthfuls of oil well belts in station are adopted by statistics note in 2015 takes 665 minutes, average each
It is 33 minutes to replace the belt time, influences 4.7 tons of crude output altogether.
Investigation two：Belt of oil pumping machine is needed by repeatedly adjustment tension in production process.Belt is adjusted using traditional approach
368 well of tension（Jackscrew, spanner adjustment motor position and handling motor fixed screw）Accumulation delay well opening time 9200
Minute.
Conclusion：Note adopts 601 stations and shares pumping unit 93, the work in adjustment belt tension and replacement belt in only 2015
In, using artificial 565 person-times, 54.11 hours are taken, influences 27.2 tons of yield altogether.9.81 ten thousand yuan of direct economic loss.（Material,
Fuel consumption, etc. other invisible costs do not count）.
Existing belt tension device of pumping unit is primarily present following advantage and disadvantage：
（1）, adjusted using jackscrew, advantage be it is simple in structure, it is easy to use, but there is also irreplaceable disadvantages, adjust
Whole range has limitation, without fundamentally reducing worker's labor intensity.
（2）, be adjusted using expansion tightening wheel, advantage is with obvious effects, but due to increasing a set of contact roller, is increased
A set of friction is secondary, increases energy consumption, simultaneously because expansion tightening wheel is mounted on the outside of belt, when winter production be easy to make belt layering plus
Fast belt damages degree.
（3）, using swinging mounting adjust belt tension, advantage be it is easy to adjust, it is with obvious effects.The disadvantage is that motor is lifted
Gao Hou, since pumping unit production is that a cycle loads the process of acute variation therefore motor shakes acutely.
（4）, using sleeve type belt tension device, advantage be it is easy to adjust, it is with obvious effects.The disadvantage is that cannot judge in time
Whether the tension of belt is suitable, can not adjust tension in time.
Utility model content
The purpose of this utility model is aiming at problem of the existing technology, and by studying for many years, providing one kind can
Efficiently, the belt of oil pumping machine identical tension for stablizing the two big functions of realizing that rapid belt replacing is kept with belt identical tension keeps filling
It sets.
The technical solution of the utility model is：
A kind of belt of oil pumping machine identical tension holding meanss, including former and later two sliding rail racks for being slidably matched with base slideway
Riser, two slide bars being connected in parallel between two sliding rail rack risers, the motor base with sliding bar cooperation,
In：The motor base includes two and carries the cross-brace plate of sliding slot and be connected to the sliding sleeve group at cross-brace plate both ends
At four sliding sleeves are slidably matched with slide bar composition；Motor base is equipped with linear reciprocation driving mechanism, and the linear reciprocation is driven
The direction of motion of motivation structure is consistent with electric motor belt direction.
Said program further comprises：
The linear reciprocation driving mechanism is arranged on the sliding rail rack riser corresponding with the side of motor base side, directly
Line reciprocating drive mechanism includes drive lead screw, driven wheel, driving wheel, power wheel, traction rope and clump weight, in sliding rail rack riser
On be provided with drive lead screw supporting shaft hole and driving wheel rotating support shaft, wherein drive lead screw inner end is parallel along electric motor belt
Direction, which rotates, is limited to motor base side, after drive lead screw outer end passes through the supporting shaft hole on corresponding sliding rail rack riser
With driving wheel rotating support shaft keeping parallelism, driven wheel is sleeved on the drive lead screw on the outside of sliding rail rack riser, driven wheel axle center
Equipped with the internal thread for rotating driving cooperation with drive lead screw, driving wheel and power wheel are coaxially fixed on driving wheel rotating support shaft
On, traction rope one end is fixed and is wrapped on power wheel, and the traction rope other end is connect with clump weight.
The different conversioning wheel group of diameter, wherein minimum diameter conversioning wheel and master are additionally provided between driven wheel and driving wheel
Driving wheel links, and maximum gauge conversioning wheel links with driven wheel, and conversioning wheel group is connected to and active by conversioning wheel rotating support shaft
On the sliding rail rack riser for taking turns rotating support shaft homonymy.
Bearing block, bearing block inside installed thrust bearing, bearing block and thrust are equipped on the outside of drive lead screw supporting shaft hole
Bearing constitutes rotatable engagement with drive lead screw.
The driven wheel, driving wheel, conversioning wheel be sprocket wheel or gear, between pass through chain or ratcheting transmission cooperation.
The linear reciprocation driving mechanism is arranged on the sliding rail rack riser corresponding with the side of motor base side, packet
Include the linear drives motor and drive lead screw being fixed on sliding rail rack riser, drive lead screw one end and linear drives motor
Connection, the other end coordinate with motor base side rotary stopper.
The belt of oil pumping machine identical tension holding meanss of the utility model are slidably matched using sliding sleeve with what slide bar coordinated, then
It is transmitted on turn-screw after being amplified gravitational moment using clump weight, driving wheel etc. using Pumping Unit, realizes quick-replaceable
The two big functions that belt is kept with belt identical tension extend belt service life, realize volume increase, the purpose of synergy.By a large amount of
Field test the characteristics of perfect in shape and function, meet site requirement with reasonable for structure.
Description of the drawings
Attached drawing 1 is a kind of overlooking structure figure of exemplary embodiments of the utility model.
Specific implementation mode
In figure：1. sliding rail rack riser, is connected using welding manner, main function is played a supporting role, while and lower part
Motor base connection cooperation；2. sliding rail rack vertical plate hole is used for fixed motor pedestal and motor base by bolt combination
The fixation of seat；3. slide bar, using thick walled steel tube（Or square steel）, inside, which can serve as a contrast, fills vertical fagging, and main function supports sliding sleeve, prevents
It only trembles, while alloing the front and back smoothly sliding of sliding sleeve；4. slide plate passes through sliding slot thereon after motor is fixed to slide plate
Motor left and right adjusting is facilitated to move；5. sliding sleeve, inside installation linear bearing（Or it does not fill bearing and directly coordinates with slide bar）With cunning
Bar is mutually slidably matched use, and motor is made to be moved forward and backward on slide bar, changes motor and belt wheel for oil pumping machine centre-to-centre spacing
Purpose；6. motor transmits torque to the wheel for inputting of pumping unit by belt；7. drive lead screw passes through a left side for drive lead screw
Right rotation realizes that motor base is moved forward and backward, and changes the purpose of motor and belt wheel for oil pumping machine centre-to-centre spacing；8. bearing block, interior
Portion's installed thrust bearing, bears the power that leading screw rotation generates, and drive motor is moved forward and backward；9. driven（Chain）Wheel, will be from front
Deceleration conversioning wheel transmits the power of coming, and passes to turn-screw；10. conversion（Chain）Wheel realizes amplification power by certain reduction ratio
The effect of square；11. actively（Chain）Wheel, is installed together with power wheel, plays the role of weight transfer to turn-screw；12.
Power wheel, with active（Chain）Wheel is installed together, and is played the role of weight transfer to leading screw；13 clump weights, pass through traction rope
The gravity of clump weight is converted into rotary power, different weight is determined with specific reference to the different requirement of each well, passes through wheel group
By moment amplification, belt tension is kept to play the role of constant moment of force.
Embodiment 1：
With reference to attached drawing 1, a kind of belt of oil pumping machine identical tension holding meanss, including former and later two and motor base fixation company
The sliding rail rack riser 1 connect, two slide bars 3 being connected in parallel between two sliding rail rack risers 1, is slidably matched with slide bar 3
Motor base.The motor base includes two and carries the slide plate 4 of sliding slot and be connected to 5 groups of the sliding sleeve at slide plate both ends
At four sliding sleeves 5 are slidably matched with the composition of slide bar 3；Motor base is equipped with linear reciprocation driving mechanism, and the linear reciprocation
The direction of motion of driving mechanism is consistent with electric motor belt direction.
Linear reciprocation driving mechanism setting on rear side of the motor base on sliding rail rack riser corresponding with the side 1,
Linear reciprocation driving mechanism includes drive lead screw 7, driven wheel 9, driving wheel 11, power wheel 12, traction rope and clump weight 13, in cunning
It is provided with drive lead screw supporting shaft hole and driving wheel rotating support shaft on rail holder riser 1, wherein 7 inner end of drive lead screw is along electricity
Motivation belt parallel direction is rotated and is limited（Similar plush copper and groove structure）Sideskid 4 outside motor base, drive lead screw 7
Outer end pass through corresponding sliding rail rack riser 7 on supporting shaft hole after with 11 rotating support shaft keeping parallelism of driving wheel, driven wheel
11 are sleeved on the drive lead screw 7 in 1 outside of sliding rail rack riser, and 9 axle center of driven wheel is equipped with rotates driving cooperation with drive lead screw 7
Internal thread, driving wheel 11 and power wheel 12 are coaxially fixed in driving wheel rotating support shaft, and traction rope one end is fixed and is wrapped in
On power wheel 12, the traction rope other end is connect with clump weight 13.
Further, different 10 groups of the conversioning wheel of diameter is additionally provided between driven wheel 9 and driving wheel 11, wherein minimum
Diameter conversioning wheel links with driving wheel 11, and maximum gauge conversioning wheel links with driven wheel 9, and conversioning wheel group rotates branch by conversioning wheel
Support axis connection on the sliding rail rack riser 1 of driving wheel rotating support shaft homonymy.
Further, bearing block 8,8 inside installed thrust bearing of bearing block, axis are equipped on the outside of drive lead screw supporting shaft hole
Bearing 8 and thrust bearing constitute rotatable engagement with drive lead screw 7.
The driven wheel, driving wheel, conversioning wheel be sprocket wheel or gear, between pass through chain or ratcheting transmission cooperation.
It is equipped with foreign side's plush copper in the outer end of drive lead screw 7, convenient for coordinating other tools to realize electric motor belt replacement operation
It uses.
Application method：
Belt of oil pumping machine identical tension holding meanss need to be only fixed on motor base when first installation, motor installation
On motor base, adjustment finishes fastening bolt.
When replacing belt, need to only it use crank that turn-screw is made to rotate, drive motor pedestal and motor are moved forward and backward
It can achieve the purpose that rapid belt replacing.（Operating time is generally 5 minutes）
When adjusting belt tension, clump weight need to only be hung and belt tension can be realized to suitable position automatically keep shape
State, for belt once there is a phenomenon where pine, the gravity that balance weight generates generates suitable torque driving transmission by moment amplification
Lead screw rotation reduces to make belt of oil pumping machine be in rational tensioning state always to extend belt life simultaneously
The working strength of worker improves rate when recovering the oil.（This process is without shutting down）.
Belt of oil pumping machine tensioner does not have company standard at present, and it is that worker uses subordinate pressure one to two to commonly reach what degree
Refer to or turn over to restore to the original state after belt is loosed one's grip and is considered as reaching standard.
Make belt tension using this kind of method, can realize several effective target effects：
1, quick-replaceable belt of oil pumping machine is realized；
Without adjusting four points one lines when 2, replacing belt, the fixing bolt for loosening, tighten motor is no longer needed to；
3, belt of oil pumping machine tension can accomplish constant holding；
It no longer needs to stop pumping unit when 4, adjusting belt tension, ensures safety in production；
5, extend belt service life, reduce material consumption.
Embodiment 2：
A kind of belt of oil pumping machine identical tension holding meanss, including former and later two sliding rail branch for being fixedly connected with motor base
Erect plate 1, two slide bars 3 being connected in parallel between two sliding rail rack risers 1, the motor bottom being slidably matched with slide bar 3
Seat.The motor base includes that two slide plates 4 with sliding slot are formed with the sliding sleeve 5 for being connected to slide plate both ends, four sliding sleeves 5
It is slidably matched with the composition of slide bar 3；Motor base is equipped with linear reciprocation driving mechanism, and the fortune of the linear reciprocation driving mechanism
Dynamic direction is consistent with electric motor belt direction.
Sliding rail rack riser corresponding with the side is arranged on the outside of motor base in the linear reciprocation driving mechanism, including
The linear drives motor and drive lead screw 7 being fixed on sliding rail rack riser 1,7 one end of drive lead screw and linear drives are electronic
Machine connects, the other end and motor base side rotary stopper（Similar plush copper and groove structure）Cooperation.
In order to keep belt tension constant, increase belt tension sensor and linear drives Motor Control on this basis
Device, to realize that belt tension automatic constant controls.
Claims (7)
1. a kind of belt of oil pumping machine identical tension holding meanss, include the sliding rail rack of former and later two and motor base secure fit
Riser, two slide bars being connected in parallel between two sliding rail rack risers, the motor base with sliding bar cooperation are special
Sign is：The motor base includes two and carries the cross-brace plate of sliding slot and be connected to the sliding sleeve at cross-brace plate both ends
Composition, four sliding sleeves are slidably matched with slide bar composition；Linear reciprocation driving mechanism is equipped on motor base, and the straight line is past
The direction of motion of multiple driving mechanism is consistent with electric motor belt direction.
2. belt of oil pumping machine identical tension holding meanss according to claim 1, it is characterised in that：The linear reciprocation driving
Mechanism is arranged on the sliding rail rack riser corresponding with the side of motor base side, and linear reciprocation driving mechanism includes driving wire
Bar, driven wheel, driving wheel, power wheel, traction rope and clump weight are provided with drive lead screw supporting shaft hole on sliding rail rack riser
With driving wheel rotating support shaft, wherein drive lead screw inner end is limited to motor base along the rotation of electric motor belt parallel direction
Side, drive lead screw outer end keep putting down after passing through the supporting shaft hole on corresponding sliding rail rack riser with driving wheel rotating support shaft
Row, driven wheel are sleeved on the drive lead screw on the outside of sliding rail rack riser, and driven wheel axle center is equipped with matches with drive lead screw rotation driving
The internal thread of conjunction, driving wheel and power wheel are coaxially fixed in driving wheel rotating support shaft, and traction rope one end is fixed and is wrapped in
On power wheel, the traction rope other end is connect with clump weight.
3. belt of oil pumping machine identical tension holding meanss according to claim 2, it is characterised in that：In driven wheel and driving wheel
Between be additionally provided with the different conversioning wheel group of diameter, wherein minimum diameter conversioning wheel links with driving wheel, maximum gauge conversioning wheel
It links with driven wheel, conversioning wheel group is connected to the sliding rail branch with driving wheel rotating support shaft homonymy by conversioning wheel rotating support shaft
It erects on plate.
4. belt of oil pumping machine identical tension holding meanss according to claim 2 or 3, it is characterised in that：In drive lead screw branch
It supports and is equipped with bearing block on the outside of axis hole, installed thrust bearing, bearing block and thrust bearing are constituted with drive lead screw inside bearing block revolves
Turn cooperation.
5. belt of oil pumping machine identical tension holding meanss according to claim 4, it is characterised in that：The driven wheel, active
Wheel, conversioning wheel be sprocket wheel or gear, between pass through chain or ratcheting transmission cooperation.
6. belt of oil pumping machine identical tension holding meanss according to claim 5, it is characterised in that：In driven wheel, driving wheel
It is equipped with shield with the outside of conversioning wheel, foreign side's plush copper is equipped in the outer end of drive lead screw.
7. belt of oil pumping machine identical tension holding meanss according to claim 1, it is characterised in that：The linear reciprocation driving
Mechanism is arranged on the sliding rail rack riser corresponding with the side of motor base side, including is fixed on sliding rail rack riser
Linear drives motor and drive lead screw, drive lead screw one end are connect with linear drives motor, the other end and motor base
Side rotary stopper cooperation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820381327.1U CN207989665U (en) | 2018-03-21 | 2018-03-21 | Belt of oil pumping machine identical tension holding meanss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820381327.1U CN207989665U (en) | 2018-03-21 | 2018-03-21 | Belt of oil pumping machine identical tension holding meanss |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207989665U true CN207989665U (en) | 2018-10-19 |
Family
ID=63827592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820381327.1U Active CN207989665U (en) | 2018-03-21 | 2018-03-21 | Belt of oil pumping machine identical tension holding meanss |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207989665U (en) |
-
2018
- 2018-03-21 CN CN201820381327.1U patent/CN207989665U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2013097832A1 (en) | Beam pumping unit with motorised and manual balancing | |
| CN206246095U (en) | The blue elephant that a kind of use decelerating through motor unit drives is put | |
| CN207989665U (en) | Belt of oil pumping machine identical tension holding meanss | |
| CN201228542Y (en) | Non-beam cylinder belt type oil pumping machine | |
| CN101758998A (en) | Light skidding jack-up shifter | |
| CN206802221U (en) | A kind of rubber-tyred roller driving chain tension structure | |
| CN102151702B (en) | Rear guide device for seamless steel tube rolling mill | |
| CN210816722U (en) | Hot rolling mill roller fixing mechanism | |
| CN202955196U (en) | Chain transmission reversing device of beam-pumping unit | |
| CN202037189U (en) | Rear guiding device of seamless steel tube rolling mill | |
| CN201193154Y (en) | Tensioning and centering device of hoister driven sprocket | |
| CN206952872U (en) | A kind of thrust bearing shoe valve dismantling device | |
| CN202673256U (en) | Cluster well one-machine double-production lifting device | |
| CN202176287U (en) | Novel transfer device for power tongs | |
| CN2574810Y (en) | Multifunction key duplicating machine | |
| CN201671602U (en) | Lever type beam-pumping unit driven by steel wire rope | |
| CN206686019U (en) | Movable motor base | |
| CN206246096U (en) | The blue elephant that a kind of use dual-axle motor drives | |
| CN206172404U (en) | Chain scraper overspeed device tensioner | |
| CN205837801U (en) | A kind of feed mechanism of single-beam crane road wheel processing unit (plant) | |
| CN201192694Y (en) | Balancing device of crankshaft-double eccentric quality level for cold tube mill | |
| CN111021994B (en) | Balance device for crank type pumping unit and pumping unit | |
| CN106639985A (en) | Novel energy- saving without oil beam pumping unit | |
| CN221347755U (en) | Online bridging device of storage cabinet chain for cigarettes | |
| CN210655985U (en) | Portable driftage calliper changes frock |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190118 Address after: 257100 No. 676 the Yellow River Road, Dongying District, Dongying, Shandong. Patentee after: Dongying Oleng Electrical Appliances Complete Equipment Co., Ltd. Address before: 257231 Room 102, Unit 2, Building 8, 46 Yongle Road, Gudao Town, Hekou District, Dongying City, Shandong Province Patentee before: Chen Guangli |