CN106639988A - Single-reversing oil pumping unit with triangular chains - Google Patents

Single-reversing oil pumping unit with triangular chains Download PDF

Info

Publication number
CN106639988A
CN106639988A CN201710158637.7A CN201710158637A CN106639988A CN 106639988 A CN106639988 A CN 106639988A CN 201710158637 A CN201710158637 A CN 201710158637A CN 106639988 A CN106639988 A CN 106639988A
Authority
CN
China
Prior art keywords
chain
positioning
fixed mount
wheel
sprocket
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.)
Withdrawn
Application number
CN201710158637.7A
Other languages
Chinese (zh)
Inventor
董少明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201710158637.7A priority Critical patent/CN106639988A/en
Publication of CN106639988A publication Critical patent/CN106639988A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/12Methods or apparatus for controlling the flow of the obtained fluid to or in wells
    • E21B43/121Lifting well fluids
    • E21B43/126Adaptations of down-hole pump systems powered by drives outside the borehole, e.g. by a rotary or oscillating drive

Abstract

The invention relates to a single-reversing oil pumping unit with triangular chains. The single-reversing oil pumping unit comprises a reversing turning wheel, a weight basket, a sucker rod and a reversing mechanism. A steel wire rope is wound across one end of the reversing turning wheel to be connected with the sucker rod, and the other end of the steel wire rope is connected with the reversing mechanism through the weight basket. The reversing mechanism comprises a fixing rack and a lifting power mechanism arranged on the fixing rack. The lifting power mechanism comprises first front and rear upper-right positioning adjustment chain wheels, second front and rear upper-left positioning adjustment chain wheels, first front and rear lower-right large positioning guiding chain wheels, second front and rear lower-left large positioning guiding chain wheels, first front and rear lower-right small positioning guiding chain wheels and second front and rear lower-left small positioning guiding chain wheels. The single-reversing oil pumping unit has the advantages that since the triangular lifting power mechanism is adopted, the sucker rod can stay for 4-5 seconds when running to the horizontal chains, accordingly the sucker rod can have the time to retract, the oil pumping time is much longer than the non-oil pumping time, the oil pumping efficiency is effectively improved, and the oil pumping quantity is effectively increased.

Description

Triangle chain monodromy is to oil pumper
Technical field
The present invention relates to pumping unit technical field, more particularly to a kind of triangle chain monodromy is to oil pumper.
Background technology
For a long time, China's oil field development mainly adopts beam pumping unit, although beam pumping unit reliability is high, Its operational efficiency is low, and energy consumption is big so that crude oil development high cost, it is impossible to adapt to the demand of energy-saving development, and conventional type Oil pumper is difficult to long stroke and big load.
At present during oil extraction in oil field, the closed box body oil pump of employing due to circulation link chain be single composition to circulation Motion, only one of which circulation axis during the upper and lower operation of sucker rod, but and causes sucker rod elasticity to draw making average rate shuttling movement It is long, sucker rod toward the oil that an anti-pump drainage is put on ground only have in pipe 35%, the Action of Gravity Field of ballast box is uniquely being followed On annulate shaft, circulation axis discontinuity at the volley causes rattle big, and circulation axis is easily destroyed.
In order to solve the above problems, Chinese patent 201520029504.6 discloses a kind of symmetrical cycle chain drive pumping unit and passes Dynamic device, the front left of this device, the front chain of front right circulation link chain are vertical, rear left, rear right
The rear chain of circulation link chain is vertical;The inside chain of front left, front right circulation link chain and rear left, rear right circulation link chain It is symmetrical circulation link chain in the diagonal, because the Action of Gravity Field of ballast box is on forward and backward reversing shaft, in front and back the gravity of reversing shaft divides Do not act on front left, front right circulation link chain and rear left, on rear right endless-chain, when driving shaft rotates, enter left and right drive sprocket Row is rotated, and due to the rotation of left and right drive sprocket, makes left and right driving chain be synchronized with the movement;Because left and right driving chain is made Be synchronized with the movement, make front left, front right, rear left, rear right drive sprocket, front bottom left, front bottom right, rear bottom left, rear bottom right circulation sprocket wheel and Front left, front right, rear left, rear right circulation link chain and forward and backward reversing shaft make symmetrical shuttling movement, when forward and backward reversing shaft is moved to Endless-chain
When on the vertical line of bar, well bar makees falling motion, and well bar makees falling speed increasing;When reversing shaft moves to circulation link chain During the line of dip, well bar runs up and slows down, although this structure each run, make time of oil pumping more than non-oil pumping when Between, can be with energy-conservation, although this device improves certain oil pumping amount, but also some liquid measure can not be returned in oil pick-up tube Receive.
The content of the invention
The purpose of the present invention is for the deficiencies in the prior art and demand, there is provided one kind can effectively improve oil pumping amount, and save The triangle chain monodromy of the energy is saved to oil pumper.
The object of the present invention is achieved like this.
A kind of triangle chain monodromy of the present invention is to oil pumper, including commutation gyroscope wheel, ballast box, sucker rod and reversing machine Structure, steel wire rope bypasses commutation gyroscope wheel one end and is connected with sucker rod, and the other end is connected in succession by ballast box with changement, its It is characterised by:
Described changement includes fixed mount, and the lifting drive mechanism being arranged on fixed mount, described fixed mount is rectangular Shape structure, ballast box is arranged in the fixed mount of rectangle structure, rectangle structure fixed mount longitudinal medial as raceway, The front slide mechanism for drawing drag chain and rear slide mechanism are provided with described counterweight lower box part, on described ballast box Rolling mechanism is respectively equipped with the corner of end and rolling mechanism bottom, described ballast box can be along fixed mount longitudinal medial Lower rolling;
The lifting drive mechanism includes front upper positioning adjustment sprocket wheel, the front lower big positioning and guiding chain being correspondingly arranged in fixed mount Wheel and front lower little positioning and guiding sprocket wheel, afterwards upper positioning adjustment sprocket wheel, afterwards under big positioning and guiding sprocket wheel and it is rear under little positioning guide pulleys, It is leading to loop chain bar and rear guide ring chain, big lower positioning adjustment sprocket coaxiality is provided with front lower big transmission positioning chain before described Wheel, the lower big transmission positioned chain wheels after described rear right positioning adjustment sprocket coaxiality lower greatly is provided with;
The front main driving wheel and rear sprocket for main drive being arranged on the outside of fixed mount;The rear main driving wheel 10 being arranged on the outside of fixed mount With rear sprocket for main drive;
Described leading being wrapped on front to chain positions adjustment sprocket wheel, front lower big positioning and guiding sprocket wheel and front lower little positioning and guiding Sprocket wheel it is cylindrical on, and front left is oriented to chain two ends chain link and is separately fixed on front slideway left side commutation axis of traction, constitutes triangle Circulation link chain;
Described rear guiding chain is wrapped in little positioning under positioning adjustment sprocket wheel in rear left, rear lower big transmission positioned chain wheels and rear left Jockey sprocket it is cylindrical on, and rear left is oriented to chain two ends section and is separately fixed on the left side of rear slide commutation axis of traction, also structure Triangularity circulation link chain;
Described front main transmission chain starts from front sprocket for main drive, bypasses front lower big transmission positioned chain wheels and forms closed circuit biography It is dynamic,
Described rear main transmission chain is started from and sprocket for main drive, bypasses big transmission positioned chain wheels under rear right, forms closed circuit transmission.
The described front rolling mechanism for drawing drag chain is slided by front slideway, the slide block being arranged in front slideway and setting Commutation axis of traction on block is constituted, and described rear rolling mechanism is identical with front rolling mechanism.
Described rolling mechanism is by the transverse-roller being connected by roll wheel carrier and fixed mount rolling and by upright roller frame Roll the vertical roller being connected with fixed mount to be constituted, described transverse-roller frame is respectively perpendicular to be arranged on vertical turning rolls matches somebody with somebody On the corner of loaded van top corner and rolling mechanism bottom.
Beneficial effects of the present invention:
Because the present invention is using the lifting drive mechanism of triangle, chain is oriented in upper positioning adjustment sprocket wheel and lower big positioning and guiding Be vertical chain between sprocket wheel, upper positioning adjustment sprocket wheel and under between little positioning and guiding sprocket wheel to incline chain, it is little fixed under Be horizontal link chain between position jockey sprocket and lower big positioning and guiding sprocket wheel, upper positioning adjustment sprocket wheel, lower big positioning and guiding sprocket wheel and Under little positioning and guiding sprocket wheel make guiding chain triangle, additionally, due to left and right two drag chains two ends with pass through respectively Commutation traction axial symmetry on two slide blocks of rolling mechanism is fixedly connected, and with moving up and down for ballast box, is oriented to chain Move up and down with sliding mechanism, so as to drive sucker rod to move up and down.Further, since under little positioning and guiding sprocket wheel with it is lower it is big positioning lead To yet forms both one section of horizontal link chain between sprocket wheel, such sucker rod can stop 4-5 second when operation is to horizontal link chain to allow Sucker rod has withdrawal duration, makes the time of oil pumping more than the time more than non-oil pumping, is effectively improved pumping efficiency, and it is taken out Oil mass is 30% or so of existing oil pumper.
Description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is lifting drive structural scheme of mechanism.
Fig. 3 is the A direction views of Fig. 2.
Fig. 4 is the B direction views of Fig. 2.
Fig. 5 is the structural representation of the ballast box with rolling mechanism.
Fig. 6 is the top view of Fig. 5.
Specific embodiment
The specific embodiment of the invention is described in detail below in conjunction with the accompanying drawings.
As shown in figs 1 to 6, a kind of triangle chain monodromy of the invention is to oil pumper, including commutation gyroscope wheel 2, ballast box 4th, sucker rod 1 and changement, steel wire rope 3 bypasses commutation one end of gyroscope wheel 2 and is connected with sucker rod 1, and the other end passes through ballast box 4 It is connected with changement in succession, it is characterised in that:
Described changement includes fixed mount 6, and the lifting drive mechanism being arranged on fixed mount 6, described fixed mount 6 is length Square structure, ballast box 4 is arranged in the fixed mount 6 of rectangle structure, in the fixed mount longitudinal medial conduct of rectangle structure Raceway, is provided with front slide mechanism 7 and the rear slide mechanism for drawing drag chain, described in the described bottom of ballast box 4 Rolling mechanism 5 is respectively equipped with the corner of the upper end of ballast box 6 and rolling mechanism bottom, the described cocoa of ballast box 6 is along solid Determine frame longitudinal medial scroll-up/down;
The lifting drive mechanism includes front upper positioning adjustment sprocket wheel 8, the front lower big positioning and guiding being correspondingly arranged in fixed mount Sprocket wheel 12 and front lower little positioning and guiding sprocket wheel 13, afterwards upper positioning adjustment sprocket wheel 8 ', afterwards under big positioning and guiding sprocket wheel 12 ' and it is rear under it is little Positioning guide pulleys 13 ', leading to loop chain bar 9 and rear guide ring chain 9 ', the side of big lower positioning and guiding sprocket wheel 12 before described Face is coaxially provided with front lower big transmission positioned chain wheels 14, lower big after described rear right descends greatly positioning and guiding sprocket wheel 12 ' to be coaxially provided with Transmission positioned chain wheels 14 ';
The front main driving wheel 10 and rear sprocket for main drive 11 being arranged on the outside of fixed mount;
The rear main driving wheel 10 ' and rear sprocket for main drive 11 ' being arranged on the outside of fixed mount.
It is described it is leading be wrapped in chain 9 before upper positioning adjustment sprocket wheel 8, front lower big positioning and guiding sprocket wheel 12 and front lower little Positioning and guiding sprocket wheel 13 it is cylindrical on, and front left is oriented to the two ends chain link of chain 8 and is separately fixed at front slideway left side commutation axis of traction On, constitute triangle circulation link chain;
Described rear guiding chain 9 ' is wrapped in positioning adjustment sprocket wheel 8 ' in rear left, rear lower big transmission positioned chain wheels 12 ' and rear left Under little positioning and guiding sprocket wheel 13 ' it is cylindrical on, and rear left be oriented to the end segment of chain 9 ' two be separately fixed at rear slide left side commutation On axis of traction, also triangle circulation link chain;
Described front main transmission chain 11 starts from front sprocket for main drive 10, bypasses front lower big transmission positioned chain wheels 14 formation and closes Road is driven,
Described rear main transmission chain 11 ' is started from and sprocket for main drive 10 ', bypasses big transmission positioned chain wheels 14 ' under rear right, is formed Closed circuit transmission.
The described front rolling mechanism for drawing drag chain is by front slideway 7-1, the slide block 7- being arranged in front slideway 7-1 Commutation axis of traction 7-2 on 2 and setting slide block 7-3 is constituted, and described rear rolling mechanism is identical with front rolling mechanism.Due to The leading of former and later two elevating mechanisms is fixed to loop chain bar 9 and rear guide ring chain 9 ' with former and later two commutations axis of traction 7-2 Connection, with moving up and down for ballast box, is oriented to chain and also moves up and down with sliding mechanism, so as to drive sucker rod to move up and down.
Described rolling mechanism is by the transverse-roller 5-1 being connected by roll wheel carrier and fixed mount rolling and by upright roller Frame rolls the vertical roller 5-2 being connected with fixed mount and is constituted, and described transverse-roller frame is respectively perpendicular with vertical turning rolls and sets Put on the corner of counterweight upper box part corner and rolling mechanism bottom.So transverse-roller and vertical roller withstand on respectively fixed mount Longitudinal medial, the diagonal rolling of formation, it is ensured that ballast box is smoothly rolled up and down with chain.
When ballast box is up, it is oriented to chain and rises along vertical chain, sucker rod makees falling motion;When ballast box it is descending When, under in the presence of little jockey sprocket, chain is oriented to along declining when inclining chain line, sucker rod runs up speed and slows down, Simultaneously because under yet forms both one section of horizontal link chain, such sucker rod between little positioning and guiding sprocket wheel and lower big positioning and guiding sprocket wheel 4-5 second can be stopped when operation is to horizontal link chain section allowing sucker rod to have withdrawal duration, make time of oil pumping greatly more than being more than The time of non-oil pumping, it is effectively improved pumping efficiency and oil pumping amount.

Claims (3)

1. a kind of triangle chain monodromy is to oil pumper, including commutation gyroscope wheel, ballast box, sucker rod and changement, steel wire Rope bypasses commutation gyroscope wheel one end and is connected with sucker rod, and the other end is connected in succession by ballast box with changement, and its feature exists In:
Described changement includes fixed mount, and the lifting drive mechanism being arranged on fixed mount, described fixed mount is rectangular Shape structure, ballast box is arranged in the fixed mount of rectangle structure, rectangle structure fixed mount longitudinal medial as raceway, The front slide mechanism for drawing drag chain and rear slide mechanism are provided with described counterweight lower box part, on described ballast box Rolling mechanism is respectively equipped with the corner of end and rolling mechanism bottom, described ballast box can be along fixed mount longitudinal medial Lower rolling;
The lifting drive mechanism includes front upper positioning adjustment sprocket wheel, the front lower big positioning and guiding chain being correspondingly arranged in fixed mount Wheel and front lower little positioning and guiding sprocket wheel, afterwards upper positioning adjustment sprocket wheel, afterwards under big positioning and guiding sprocket wheel and it is rear under little positioning guide pulleys, It is leading to loop chain bar and rear guide ring chain, big lower positioning adjustment sprocket coaxiality is provided with front lower big transmission positioning chain before described Wheel, the lower big transmission positioned chain wheels after described rear right positioning adjustment sprocket coaxiality lower greatly is provided with;
The front main driving wheel and rear sprocket for main drive being arranged on the outside of fixed mount, be arranged on rear main driving wheel on the outside of fixed mount and Sprocket for main drive afterwards;
Described leading being wrapped on front to chain positions adjustment sprocket wheel, front lower big positioning and guiding sprocket wheel and front lower little positioning and guiding Sprocket wheel it is cylindrical on, and front left is oriented to chain two ends chain link and is separately fixed on front slideway left side commutation axis of traction, constitutes triangle Circulation link chain;
Described rear guiding chain is wrapped in little positioning under positioning adjustment sprocket wheel in rear left, rear lower big transmission positioned chain wheels and rear left Jockey sprocket it is cylindrical on, and rear left is oriented to chain two ends section and is separately fixed on the left side of rear slide commutation axis of traction, also structure Triangularity circulation link chain;
Described front main transmission chain starts from front sprocket for main drive, bypasses front lower big transmission positioned chain wheels and forms closed circuit biography It is dynamic,
Described rear main transmission chain is started from and sprocket for main drive, bypasses big transmission positioned chain wheels under rear right, forms closed circuit transmission.
2. triangle chain monodromy according to claim 1 is to oil pumper, it is characterised in that described is oriented to for drawing The front rolling mechanism of chain is made up of the commutation axis of traction on front slideway, the slide block being arranged in front slideway and setting slide block, institute The rear rolling mechanism stated is identical with front rolling mechanism.
3. triangle chain monodromy according to claim 1 is to oil pumper, it is characterised in that described rolling mechanism is by leading to Cross roll wheel carrier and the transverse-roller being connected and the vertical roller being connected with fixed mount rolling by upright roller frame are rolled with fixed mount Constituted, described transverse-roller frame is respectively perpendicular with vertical turning rolls and is arranged on counterweight upper box part corner and rolling mechanism bottom Corner on.
CN201710158637.7A 2017-03-17 2017-03-17 Single-reversing oil pumping unit with triangular chains Withdrawn CN106639988A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710158637.7A CN106639988A (en) 2017-03-17 2017-03-17 Single-reversing oil pumping unit with triangular chains

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710158637.7A CN106639988A (en) 2017-03-17 2017-03-17 Single-reversing oil pumping unit with triangular chains

Publications (1)

Publication Number Publication Date
CN106639988A true CN106639988A (en) 2017-05-10

Family

ID=58847595

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710158637.7A Withdrawn CN106639988A (en) 2017-03-17 2017-03-17 Single-reversing oil pumping unit with triangular chains

Country Status (1)

Country Link
CN (1) CN106639988A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115947258A (en) * 2022-12-12 2023-04-11 徐州东宏机械制造有限公司 Double-stroke lifting mechanism

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO741626L (en) * 1973-05-07 1974-11-08 Weatherford Oil Tool Rotary drive device.
CN87216773U (en) * 1987-12-21 1988-09-07 钟有学 Rotary drum type beam-pumping unit
CN2906209Y (en) * 2006-01-04 2007-05-30 大庆油田有限责任公司 Single-crank double-stoke flexible type pumping unit driving member
CN101509362A (en) * 2009-03-23 2009-08-19 董少明 Pumping unit apparatus for installing motor transmission mechanism in transversal direction
CN101525988A (en) * 2009-04-17 2009-09-09 董少明 Weight box device of oil extractor
CN201326391Y (en) * 2008-12-09 2009-10-14 江苏天明机械集团有限公司 Novel hoister of fully hydraulic rock core prospecting drill
CN201367886Y (en) * 2009-03-19 2009-12-23 褚镇 Adjustable stroke and stroke frequency type combined oil extractor
CN102661133A (en) * 2012-05-15 2012-09-12 董少明 Oil pumping unit device capable of driving chains and well rod to move along fan-shaped edge
CN203248132U (en) * 2013-05-21 2013-10-23 江苏圣乐机械有限公司 Crank type reversing buffer device for bumping unit
CN103615219A (en) * 2013-12-10 2014-03-05 中国石油大学(华东) Novel double-chain pumping unit
CN203926649U (en) * 2014-01-10 2014-11-05 四川省资阳市自立粮油机械有限责任公司 Buffering type protects chain drive structure
CN203962524U (en) * 2014-07-21 2014-11-26 陕西延长石油机械装备制造有限公司 A kind of pumping unit maintenance unit with buffer function

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO741626L (en) * 1973-05-07 1974-11-08 Weatherford Oil Tool Rotary drive device.
CN87216773U (en) * 1987-12-21 1988-09-07 钟有学 Rotary drum type beam-pumping unit
CN2906209Y (en) * 2006-01-04 2007-05-30 大庆油田有限责任公司 Single-crank double-stoke flexible type pumping unit driving member
CN201326391Y (en) * 2008-12-09 2009-10-14 江苏天明机械集团有限公司 Novel hoister of fully hydraulic rock core prospecting drill
CN201367886Y (en) * 2009-03-19 2009-12-23 褚镇 Adjustable stroke and stroke frequency type combined oil extractor
CN101509362A (en) * 2009-03-23 2009-08-19 董少明 Pumping unit apparatus for installing motor transmission mechanism in transversal direction
CN101525988A (en) * 2009-04-17 2009-09-09 董少明 Weight box device of oil extractor
CN102661133A (en) * 2012-05-15 2012-09-12 董少明 Oil pumping unit device capable of driving chains and well rod to move along fan-shaped edge
CN203248132U (en) * 2013-05-21 2013-10-23 江苏圣乐机械有限公司 Crank type reversing buffer device for bumping unit
CN103615219A (en) * 2013-12-10 2014-03-05 中国石油大学(华东) Novel double-chain pumping unit
CN203926649U (en) * 2014-01-10 2014-11-05 四川省资阳市自立粮油机械有限责任公司 Buffering type protects chain drive structure
CN203962524U (en) * 2014-07-21 2014-11-26 陕西延长石油机械装备制造有限公司 A kind of pumping unit maintenance unit with buffer function

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
契罗尼斯(N.P.CHIRONIS): "《机构和机械控制装置》", 30 January 1984 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115947258A (en) * 2022-12-12 2023-04-11 徐州东宏机械制造有限公司 Double-stroke lifting mechanism

Similar Documents

Publication Publication Date Title
CN202215270U (en) Circulating self-moving forepoling hydraulic support
CN106088740A (en) A kind of hanging cross sliding type tunnel stacking multi-storied garage
CN105923507A (en) Novel high-speed hoist
CN104895532A (en) Chain transmission reversing and short support double long-stroke oil pumping machine and using method thereof
CN106639988A (en) Single-reversing oil pumping unit with triangular chains
CN206016721U (en) A kind of oil pipe remote control drag-over unit
CN206592106U (en) Triangle chain monodromy is to oil pumper
CN207714844U (en) Tunnel stacking stereo garage
CN209177575U (en) A kind of solid rollgang
CN205895267U (en) Automatic carry orbital working jumbo for tunnel lining of walking
CN206592116U (en) The double reversing pumping units of triangle chain
CN107939421A (en) Complete-section tunnel boring machine section of jurisdiction fast discharging storage device
CN107338991A (en) A kind of comb-tooth-type multi-storied garage
CN106884555B (en) Chair lift stereo garage
CN106894809A (en) The double reversing pumping units of triangle chain
CN104727611B (en) Multi-storey up-down & translation formula parking apparatus
CN203033348U (en) Hydraulic tensioning mechanism of belt conveying machine
CN106348215B (en) A kind of organic waste sprays the fully automatic winding delivery system before quick-fried processing
CN105370072B (en) A kind of hydraulic clamping formula vehicle carrier
CN203254505U (en) Full-automatic vertical strip cutting machine
CN209051922U (en) A kind of overlength steel plate collecting rack
CN205709344U (en) A kind of novel high speed elevator
CN203583952U (en) Novel simple laterally-swaying lifting-type stereo garage
CN203092709U (en) Plate-advancing mechanism of all-hydraulic brick-making machine
CN104175390A (en) Full-automatic vertical bar cutting machine

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WW01 Invention patent application withdrawn after publication

Application publication date: 20170510

WW01 Invention patent application withdrawn after publication