CN201495048U - Double movable-arm crane used for iron tower installation - Google Patents
Double movable-arm crane used for iron tower installation Download PDFInfo
- Publication number
- CN201495048U CN201495048U CN2009202306016U CN200920230601U CN201495048U CN 201495048 U CN201495048 U CN 201495048U CN 2009202306016 U CN2009202306016 U CN 2009202306016U CN 200920230601 U CN200920230601 U CN 200920230601U CN 201495048 U CN201495048 U CN 201495048U
- Authority
- CN
- China
- Prior art keywords
- tower
- arm
- jacking
- assembly pulley
- loop wheel
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The utility model discloses a double movable-arm crane used for iron tower installation, which mainly includes a tower body fixed on a foundation; a swinging gear is connected with the tower body; the upper part of the swinging gear is respectively provided with a tower cap and a davit arm; the tower body is connected by a plurality of standard knots which are overlapped in sequence; the standard knots are connected through high-strength bolts; the outside of the tower body is provided with an adhering mechanism; the roots of the davit arms are hinged at the two sides of the swinging gears; and the heads of the davit arms are connected with the tower cap through steel wires. The davit arms are lattice type double movable-arms, which can change amplitude up and down. Moreover, the davit arms can be folded together to realize self lifting and self descending together with the tower body. The whole crane has high safety, is convenient to be mounted and dismounted, has a high construction efficiency, and is especially suitable for construction of iron tower with ultra-high height, such as the construction of ultra-high buildings like ultra-high television/radio transmitter and ultra-high voltage large-span power transmission tower, etc.
Description
(1) technical field
The utility model relates to a kind of weight-lifting equipment, and especially to the telecast launch tower of superelevation, the required special-purpose loop wheel machine of installation of UHV transmission iron tower, especially iron tower is installed with two swing arm loop wheel machines.
(2) background technology
The iron tower erecting equipment of state's inner height superelevation has tower crane, two flat arm pole, inner suspension rocking arm pole at present.The shortcoming of tower crane is can not fall dismounting certainly after iron tower installs, and swing type mechanism must be higher than iron tower when two flat arm pole shortcomings were the iron tower installation, and is unfavorable to whole body of the tower security and stability, and inconvenience is installed and removed to inner suspension rocking arm pole.And present inner suspension rocking arm pole etc. also has the lifting structure, generally is to promote body of the tower by steel wire and supporting structure.All there is certain shortcoming in top hanging device.Not desirable hanging device in such building operation.
(3) summary of the invention
The utility model provides a kind of iron tower to install with two swing arm loop wheel machines, and the technical matterss such as resistance to overturning of the dangerous and lifting of tower fall in the equipment installation, jacking, the dismounting that mainly solve present iron tower installation.
The utility model mainly is to realize by following measure:
Iron tower of the present utility model is installed with two swing arm loop wheel machines, mainly be fixed on the body of the tower (10) on the basis, body of the tower (10) is gone up and is connected swing type mechanism (15), tower cap (30) is installed on swing type mechanism (15) top respectively, arm (20) and arm (21), body of the tower is connected by the standard knot of a plurality of stacks successively, connect by high strength bolt between the standard knot, the body of the tower outside is provided with attachment mechanism, it is characterized in that: the root of arm (20) and arm (21) is hinged on the both sides of swing type mechanism (15), and arm (20) is connected with tower cap (30) by steel rope with arm (21) head.
Jacking stock (9) is being overlapped in body of the tower (10) bottom, jacking stock (9) is a structural framing, jacking stock (9) is connected on the sole plate (7), jacking stock (9) top is provided with two hydraulic rams (38) and four jacking support claws (39), connect jacking crossbeam (41) on the rod end of hydraulic ram (38), the standard knot both sides of body of the tower are provided with the jacking piece, and jacking crossbeam (41) alternately withstands on the jacking piece of standard knot both sides when jacking.
Attachment mechanism comprises and somely adheres to frame (11) and adhere to connecting rod (12), adhere to frame (11) and be enclosed within the body of the tower periphery, adhere to connecting rod (12) one ends and adhere to frame (11) and be connected, the other end is connected with the iron tower (37) of body of the tower fixed outside, adheres between frame (11) and the body of the tower to be provided with roller.
Attachment mechanism comprises and adheres to frame (11), adheres to connecting rod (12) (can make the flexibility or rigidity bar), adheres to connecting rod (12) one ends and adheres to frame (11) and be connected, and the other end is connected with the iron tower (37) of fixed outside.
The luffing steel rope is drawn by being arranged in ground-surface luffing winch (5), successively the assembly pulley (13,14) through being fixed on luffing deflection sheave 3 on the basis, body of the tower middle part, the pulley (31,32) on the tower cap and between the assembly pulley (22,25) of the assembly pulley (33,34) of tower crown portion and arm head, wear around, be connected in the head end of arm (20) and arm (21) at last.Annotate: the luffing winch is two reels, controls arm (20) and arm (21) luffing respectively by two steel ropes.
Hoist rope is drawn by being arranged in the ground-surface winch that hoists (4), successively through be fixed on luffing deflection sheave 3 on the basis, on the body of the tower assembly pulley (13,14), on the swing type mechanism pulley (16,17), on the arm assembly pulley (23,26), at last between the assembly pulley (24,27) of arm head end and the assembly pulley (28,29) on the suspension hook many multiplying powers wear around.Annotate: the winch that hoists is two reels, by two steel ropes weight that arm (20) and arm (21) lift by crane that hoists respectively.
Arm (20 and arm (21) be the foursquare cross section of truss-like, be equipped with some hoist rope deflection sheave groups on two arms.
The utility model has following advantage compared to existing technology:
1, two arms operation simultaneously, mutual balance, two gib heads can hoist simultaneously, also can hoist separately, two arms can draw in to the folding back of tower cap, can descend with body of the tower is whole after the gathering, be not subjected to the restriction of iron tower, the trouble of having avoided two arms to disintegrate and dismantle in the high-altitude has reduced the aloft work risk, improves and tears column efficiency open.
2, operator's compartment and luffing and the winch that hoists are arranged in ground, and whether the steel rope that the handled easily personnel observe winch at any time disorderly falls, and avoid dangerous and occur, and operating personal can guarantee the safety of operating personal on ground, and maintaining simultaneously is convenient.
3, lifting body adopts hydraulic lifting, realizes the integral jacking of tower machine, and standard knot is introduced from ground sole plate track, makes things convenient for personnel operation, avoids the danger of aloft work.
4, entire machine design is reasonable, novel structure, and the processing safety height, dismounting is easy.
(4) description of drawings
Fig. 1 is the integral structure figure of loop wheel machine;
Fig. 2 is the folding scheme drawing of drawing close to the tower cap of the arm of loop wheel machine;
Fig. 3 is loop wheel machine jacking supporting figure;
Fig. 4 wears around figure for hoist rope;
Fig. 5 wears around figure for the luffing steel rope.
Among the figure: 1-concrete foundation, the 2-deflection sheave that hoists, 3-luffing deflection sheave, the 4-winch that hoists, 5-luffing winch, 6-operator's compartment, 7-sole plate, 8-standard knot sliding rail, 9-jacking stock, the 10-body of the tower, 11-adheres to frame, and 12-adheres to connecting rod, the 13-assembly pulley, 14-assembly pulley, 15-swing type mechanism, 16-pulley, the 17-pulley, 18-pulley, 19-pulley, the 20-arm, 21-arm, 22-assembly pulley, the 23-pulley, 24-assembly pulley, 25-assembly pulley, the 26-pulley, 27-assembly pulley, 28-suspension hook, the 29-suspension hook, 30-tower cap, 31-pulley, the 32-pulley, 33-assembly pulley, 34-assembly pulley, the 35-weight, 36-weight, 37-iron tower, the 38-oil cylinder, 39-support claw, 40-standard knot.
(5) specific embodiment
Also in conjunction with the accompanying drawings the utility model is further specified below by example:
As Fig. 1, Fig. 2, shown in Figure 3, iron tower of the present utility model is installed with two swing arm loop wheel machines and is comprised base (7), base (7) is gone up body of the tower (10) is installed, body of the tower (10) is by passing through bolted standard knot successively, body of the tower (10) bottom cover one jacking stock (9), be provided with on the jacking stock (9) and also overlapping some frames (11) that adhere on two jacking cylinders (38), adhere to frame (11) by adhering to connecting rod (11) and outer attached building (37) and flexibly connect or being rigidly connected, body of the tower (10) top installs back rotation mechanism (15), swing type mechanism (15) drives by rotary motor, swing type mechanism (15) is gone up the arm (20 and 21) that two symmetric arrangement are installed, and tower cap (30) is installed in the middle of the swing type mechanism (15).
As shown in Figure 5, the luffing steel rope is through luffing deflection sheave (31 and 32), luffing assembly pulley (3) and assembly pulley (13 and 14) many multiplying powers between the assembly pulley (22 and 25) of the assembly pulley (33 and 34) at tower cap (30) top and arm head wear around, realize arm (20) and arm (21) luffing.
As shown in Figure 4, hoist rope is by the deflection sheave that hoists (16,17,18,19,23,26), and lifting pulley group (2) and assembly pulley (13 and 14) are at last at arm (20) and arm 21) between the assembly pulley (24 and 27) of head and the lifting hook pulley group (28 and 29) many multiplying powers wear around.
The swing type mechanism of loop wheel machine (15) adopts the swing type mechanism of common tower machine, can pass through electro-motor or fluid motor-driven.
The jacking stock (9) of loop wheel machine comprises the jacking framework, hydraulic lifting oil cylinder (38), support claw (39), and supporting pumping plant, lifting body adopts the two-sided jacking of common tower machine, can make the loop wheel machine jacking safer, jacking base of frame and base pass through bolted connection, during jacking, start oil cylinder (38) and make and also be provided with on the jacking crossbeam (41) of oil cylinder (38) end on the jacking piece that anchor plate is bearing in the body of the tower outside, make oil cylinder (38) stretch out certain-length, promote a standard pitch from, at this moment support claw (39) can be bearing on following second group of jacking piece of standard knot, regain oil cylinder, this action that circulates is until making whole loop wheel machine upwards promote the distance of a standard knot, by being installed in the standard knot sliding rail (8) on the base (7), standard knot is introduced, connected with the nethermost standard knot of body of the tower (10).Operation can promote a plurality of standard knots successively.
Loop wheel machine is installed: at concrete foundation (1) pre-embedded anchoring bolts and the pre-embedded steel slab of realizing cast, holding-down bolt is connected with base (7), base (7) is connected with jacking stock (9) with body of the tower (10), and pre-embedded steel slab and luffing and deflection sheave group (the 2 and 3) support that hoists are welded to connect.Body of the tower (10) is connected successively by standard knot, body of the tower (10) top is connected by high strength bolt with swing type mechanism (15), body of the tower (10) middle part is installed and is hoisted and luffing deflection sheave group (13 and 14), swing type mechanism (15) is connected with arm (the 20 and 21) bearing pin of symmetric arrangement, be connected with tower cap (30) bearing pin, the luffing steel rope is by the deflection sheave group (3) on basis, the deflection sheave group (13 and 14) at body of the tower middle part, deflection sheave on the tower cap (31 and 32), between the assembly pulley (22 and 25) of the assembly pulley (33 and 34) of tower crown portion and arm head, wear at last around, when realizing luffing and jacking arm (20 and 21) is packed up and close tower cap (30).Hoist rope is through the deflection sheave group (2) on the basis, the deflection sheave group (13 and 14) on the body of the tower, the deflection sheave (16 and 17) on the swing type mechanism (15), the deflection sheave (23 and 26) on the arm, between the assembly pulley (24 and 27) of arm head and lifting hook pulley group (28 and 29), wear at last around.The loop wheel machine jacking, by lifting body whole loop wheel machine promote a standard pitch from, draw and be connected being placed on standard knot on base (7) the standard knot introduction track (8) in advance with body of the tower.It is changeless adhering to during jacking, similar to the lifting principle of common internally climbing tower crane.
Loop wheel machine work: two arms (20 and 21) symmetric arrangement, mutual balance, can hoist synchronously, also can hoist separately, (winch 4 that hoists is two reels, independent drive) also can hoist separately, luffing also can synchronous amplitude, also luffing (luffing winch 5 is two reels, independent drive) makes the installing component of iron tower (37) easier to be in place separately, and revolution can realize that positive and negative 90 degree luffings are in place.
Loop wheel machine dismounting: can be during the loop wheel machine dismounting arm (20 and 21) to tower cap (30) close (iron tower upper opening space is little), start lifting body and fall tower, fall to run in the tower process and adhere to frame (11) dismounting, arm (20 and 21) is luffing by a small margin, can be with suspension hook adhesion frame (11) (adhering to frame can decompose) with adhere to connecting rod (12) and be put into ground, other loop wheel machine that usefulness is installed compared with iron tower is more convenient, can reduce and remove the risk that annex is adhered in the personal height dismounting.Loop wheel machine falls joint until dropping to the body of the tower minimum constructive height, removes with the auxiliary loop wheel machine in ground.The dismounting of two swing arm loop wheel machines can be avoided the risk of high-altitude dismantling arm and tower cap, has solved the difficult problem of other iron tower construction loop wheel machine high-altitude dismountings, improves the work efficiency of the dismounting of loop wheel machine.
Claims (6)
1. an iron tower is installed with two swing arm loop wheel machines, mainly comprise the body of the tower (10) that is fixed on the basis, body of the tower (10) is gone up and is connected swing type mechanism (15), tower cap (30) is installed on swing type mechanism (15) top respectively, arm (20) and arm (21), body of the tower (10) is connected by the standard knot of a plurality of stacks successively, connect by high strength bolt between the standard knot, the outside of body of the tower (10) is provided with attachment mechanism, it is characterized in that: the root of arm (20) and arm (21) is hinged on the both sides of swing type mechanism (15), and arm (20) is connected with tower cap (30) by steel rope with arm (21) head.
2. install with two swing arm loop wheel machines according to the described iron tower of claim 1, it is characterized in that: jacking stock (9) is being overlapped in body of the tower (10) bottom, jacking stock (9) is a structural framing, jacking stock (9) is connected on the sole plate (7), jacking stock (9) top is provided with two hydraulic rams (38) and four jacking support claws (39), connect jacking crossbeam (41) on the rod end of hydraulic ram (38), the standard knot both sides of body of the tower are provided with the jacking piece, and jacking crossbeam (41) alternately withstands on the jacking piece of standard knot both sides when jacking.
3. install with two swing arm loop wheel machines according to the described iron tower of claim 1, it is characterized in that: described attachment mechanism comprises and somely adheres to frame (11) and adhere to connecting rod (12), adhere to frame (11) and be enclosed within the body of the tower periphery, adhere to connecting rod (12) one ends and adhere to frame (11) and be connected, the other end is connected with the iron tower (37) of body of the tower fixed outside, adheres between frame (11) and the body of the tower to be provided with roller.
4. install with two swing arm loop wheel machines according to the described iron tower of claim 1, it is characterized in that: the luffing steel rope is drawn by being arranged in ground-surface luffing winch, successively the assembly pulley (13,14) through being fixed on luffing deflection sheave 3 on the basis, body of the tower middle part, the pulley (31,32) on the tower cap and between the assembly pulley (22,25) of the assembly pulley (33,34) of tower crown portion and arm head, wear around, be connected in the head end of arm (20) and arm (21) at last.
5. install with two swing arm loop wheel machines according to the described iron tower of claim 1, it is characterized in that: hoist rope is drawn by being arranged in the ground-surface winch that hoists, successively through be fixed on luffing deflection sheave (3) on the basis, on the body of the tower assembly pulley (13,14), on the swing type mechanism pulley (16,17), on the arm assembly pulley (23,26), at last between the assembly pulley (24,27) of arm head end and the assembly pulley (28,29) on the suspension hook many multiplying powers wear around.
6. install with two swing arm loop wheel machines according to the described iron tower of claim 1, it is characterized in that: arm (20 and arm (21) be the foursquare cross section of truss-like, be equipped with some hoist rope deflection sheave groups on two arms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202306016U CN201495048U (en) | 2009-08-24 | 2009-08-24 | Double movable-arm crane used for iron tower installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202306016U CN201495048U (en) | 2009-08-24 | 2009-08-24 | Double movable-arm crane used for iron tower installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201495048U true CN201495048U (en) | 2010-06-02 |
Family
ID=42438256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202306016U Expired - Lifetime CN201495048U (en) | 2009-08-24 | 2009-08-24 | Double movable-arm crane used for iron tower installation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201495048U (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102807163A (en) * | 2012-08-21 | 2012-12-05 | 广西壮族自治区公路桥梁工程总公司 | Tower assembly device and method for assembling concrete filled steel tube tower of tower assembly device |
| WO2013086879A1 (en) * | 2011-12-15 | 2013-06-20 | 中联重科股份有限公司 | Tower crane access platform structure |
| CN103434946A (en) * | 2013-09-08 | 2013-12-11 | 东台市富康工程机械厂 | Movable type tower crane |
| CN103557126A (en) * | 2013-10-23 | 2014-02-05 | 中国中铁航空港建设集团有限公司 | Installation device and installation method for wind power generation device |
| CN103832933A (en) * | 2013-09-29 | 2014-06-04 | 国家电网公司 | Group tower type crane with auxiliary boom |
| CN105236281A (en) * | 2015-10-21 | 2016-01-13 | 广东明阳风电产业集团有限公司 | Self-balancing overturning moment derricking mechanism |
| CN105271009A (en) * | 2015-10-09 | 2016-01-27 | 徐州建机工程机械有限公司 | Double-horizontal-boom crane |
| CN105384088A (en) * | 2015-11-04 | 2016-03-09 | 徐州建机工程机械有限公司 | Rocker arm type inner jacking structure of tower crane and jacking method of rocker arm type inner jacking structure |
| CN106429885A (en) * | 2016-09-29 | 2017-02-22 | 中建三局集团有限公司 | Overall automatic jacking rotation type multi-crane base operation platform |
| CN106892361A (en) * | 2017-04-27 | 2017-06-27 | 钦州学院 | Double arm hanging type cranes |
| CN107055415A (en) * | 2017-06-21 | 2017-08-18 | 山东电力基本建设总公司 | Cooling tower Hydraulic Lifting-up Level Bridge attachment device |
| CN109592572A (en) * | 2019-01-22 | 2019-04-09 | 太原科技大学 | One kind being used for armored concrete wind-power tower construction equipment and construction method |
| CN111392606A (en) * | 2020-03-25 | 2020-07-10 | 徐州国联建机有限公司 | Tower crane with additional balance structure |
| CN112010203A (en) * | 2020-08-11 | 2020-12-01 | 新昌县南明街道益华机械厂 | Stable anti-shaking device of tower crane |
-
2009
- 2009-08-24 CN CN2009202306016U patent/CN201495048U/en not_active Expired - Lifetime
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013086879A1 (en) * | 2011-12-15 | 2013-06-20 | 中联重科股份有限公司 | Tower crane access platform structure |
| CN102807163A (en) * | 2012-08-21 | 2012-12-05 | 广西壮族自治区公路桥梁工程总公司 | Tower assembly device and method for assembling concrete filled steel tube tower of tower assembly device |
| CN102807163B (en) * | 2012-08-21 | 2014-07-16 | 广西壮族自治区公路桥梁工程总公司 | Tower assembly device and method for assembling concrete filled steel tube tower of tower assembly device |
| CN103434946A (en) * | 2013-09-08 | 2013-12-11 | 东台市富康工程机械厂 | Movable type tower crane |
| CN103832933A (en) * | 2013-09-29 | 2014-06-04 | 国家电网公司 | Group tower type crane with auxiliary boom |
| CN103832933B (en) * | 2013-09-29 | 2015-11-25 | 国家电网公司 | A kind of group tower tower crane with auxiliary |
| CN103557126A (en) * | 2013-10-23 | 2014-02-05 | 中国中铁航空港建设集团有限公司 | Installation device and installation method for wind power generation device |
| CN103557126B (en) * | 2013-10-23 | 2016-05-04 | 中国中铁航空港建设集团有限公司 | The erecting device of wind power plant and installation method |
| CN105271009A (en) * | 2015-10-09 | 2016-01-27 | 徐州建机工程机械有限公司 | Double-horizontal-boom crane |
| CN105236281A (en) * | 2015-10-21 | 2016-01-13 | 广东明阳风电产业集团有限公司 | Self-balancing overturning moment derricking mechanism |
| CN105384088A (en) * | 2015-11-04 | 2016-03-09 | 徐州建机工程机械有限公司 | Rocker arm type inner jacking structure of tower crane and jacking method of rocker arm type inner jacking structure |
| CN106429885A (en) * | 2016-09-29 | 2017-02-22 | 中建三局集团有限公司 | Overall automatic jacking rotation type multi-crane base operation platform |
| CN106429885B (en) * | 2016-09-29 | 2018-04-24 | 中建三局集团有限公司 | A kind of entirety Zi moves the more loop wheel machine pedestal operation platforms of Ding Sheng rotation types |
| CN106892361A (en) * | 2017-04-27 | 2017-06-27 | 钦州学院 | Double arm hanging type cranes |
| CN107055415A (en) * | 2017-06-21 | 2017-08-18 | 山东电力基本建设总公司 | Cooling tower Hydraulic Lifting-up Level Bridge attachment device |
| CN109592572A (en) * | 2019-01-22 | 2019-04-09 | 太原科技大学 | One kind being used for armored concrete wind-power tower construction equipment and construction method |
| CN111392606A (en) * | 2020-03-25 | 2020-07-10 | 徐州国联建机有限公司 | Tower crane with additional balance structure |
| CN111392606B (en) * | 2020-03-25 | 2021-06-15 | 徐州国联建机有限公司 | Tower crane with additional balance structure |
| CN112010203A (en) * | 2020-08-11 | 2020-12-01 | 新昌县南明街道益华机械厂 | Stable anti-shaking device of tower crane |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201495048U (en) | Double movable-arm crane used for iron tower installation | |
| CN201901539U (en) | Internal climbing type and external climbing type tower crane with luffing jib | |
| CN201971572U (en) | Movable arm type tower crane with suspension arm possible of being folded for dismounting | |
| EP2245304B1 (en) | A method for handling and/or servicing components of a wind turbine and a gripping apparatus for performing the method | |
| CN102795555B (en) | Large slalom crane for offshore platform | |
| CN201545635U (en) | Holding rod with double flat arms | |
| CN106115500B (en) | A kind of high-rise building is special, and tearing formula roofing open hangs and tears open certainly method certainly | |
| CN2858608Y (en) | Folding dual-horizontal-arm self-rising crane | |
| CN201961997U (en) | Electric driven platform for tower crane inner frame lifting operation | |
| CN104925673A (en) | Auxiliary hoisting device and method for multi-crane combined operation | |
| CN201495051U (en) | Crane jib for flat-top tower crane | |
| CN202766146U (en) | Large pile circling type offshore platform crane | |
| CN202575758U (en) | Roof covering lift | |
| CN107720569B (en) | A kind of dismounting inner climbing crane tower is hung with masts type roofing | |
| RU2727300C2 (en) | Mounting method of a nacelle in an upper part of a tower | |
| CN202744226U (en) | Hoisting tri-magnification rope winding olecranon-shaped arm head of moving arm tower crane | |
| CN208024056U (en) | A kind of double flat arm ground type pole | |
| CN113585860B (en) | Method for assembling and disassembling double-arm holding pole | |
| CN203529795U (en) | Special aerial conveyor | |
| CN202670961U (en) | External construction platform device for large-sized vertical column | |
| CN212828755U (en) | Novel tower body is from climbing device | |
| CN205998901U (en) | Tower crane and its gin-pole truck being used | |
| CN212050425U (en) | Special hanging flower basket of cable crane haulage rope blind area maintenance | |
| CN210049875U (en) | Hydraulic oil pumping unit | |
| CN205590168U (en) | Overturning lifting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100602 |
|
| CX01 | Expiry of patent term |