CN201817803U - Lifting gear for hydraulic steel strand - Google Patents
Lifting gear for hydraulic steel strand Download PDFInfo
- Publication number
- CN201817803U CN201817803U CN2010202766525U CN201020276652U CN201817803U CN 201817803 U CN201817803 U CN 201817803U CN 2010202766525 U CN2010202766525 U CN 2010202766525U CN 201020276652 U CN201020276652 U CN 201020276652U CN 201817803 U CN201817803 U CN 201817803U
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- CN
- China
- Prior art keywords
- steel strand
- mooring anchor
- hollow
- lifting gear
- hydraulic
- 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
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- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The utility model discloses a lifting gear for a hydraulic steel strand, comprising a hydraulic lifting mechanism and a plurality of steel strands, wherein the hydraulic lifting mechanism consists of a hollow hydraulic machine, an upper mooring anchor and a lower mooring anchor; the hollow hydraulic machine is internally provided with a hollow hydraulic piston; the upper mooring anchor is arranged at the top end of the hollow hydraulic piston; the lower mooring anchor is arranged at the bottom of the hollow hydraulic machine; one ends of the steel strands are tied at the top of the pile leg of a self-elevating platform, and the other ends penetrate through hollow axes of the upper mooring anchor, the hollow hydraulic piston and the lower mooring anchor of the hydraulic lifting mechanism, then penetrate through decks of the self-elevating platform, and then are tied at the pile shoes of the self-elevating platform. With the lifting gear for the hydraulic steel strand, the structure is compact, the stepless lifting with variable speed can be realized, the effective promoting stroke is large, and further the production cost of the platform is reduced.
Description
Technical field
The utility model relates to a kind of lifting gear, especially a kind of hydraulic pressure steel strand lifting gear.
Background technology
The major function of self lift type drilling well, production platform and formation testing job platform is, when jack-up unit is displaced to well location, by lifting gear platform is lifted away from the water surface, for operation on the sea is got ready, rise spud leg after the end of job, again backwater surface is fallen in platform, make platform revert to floating state again, prepare towage to next well location operation.Lifting gear is the critical component of jack-up unit.The lifting gear of tradition jack-up unit adopts gear teeth stripe shape electric structure or hydraulic bolt formula structure more, is fit to macrotype platform.The rack-and-pinion lifting gear is easy to operate, lifting process steadily, reliably, can promote big weight load, in the jack-up unit of depth of water marine site work more than 200 feet, have irreplaceable effect, but himself weight is bigger, complex structure, make, mounting process is strict, the cost height, not only equipment cost investment is big, and exists the deficiency that can't realize aspects such as infinitely variable speeds lifting and lifting platform stroke be limited.
The utility model content
The purpose of this utility model provides a kind of compact conformation, can realize infinitely variable speeds lifting and effective big hydraulic pressure steel strand lifting gear of lift stroke.
The technical scheme that its technical problem that solves the utility model adopts is:
A kind of hydraulic pressure steel strand lifting gear, it comprises:
One hydraulicefficiency elevation structure is made up of hollow hydraulic press, last mooring anchor and following mooring anchor, is provided with the hollow hydraulic piston in the hollow hydraulic press, and last mooring anchor places the top of hollow hydraulic piston, and following mooring anchor is located at the bottom of hollow hydraulic press; And,
Some steel strand, one end ties up to the spud leg top of jack-up unit, the other end passes the jack-up unit deck after passing from the axle center of last mooring anchor, hollow hydraulic piston and the following mooring anchor hollow of described hydraulicefficiency elevation structure, be tied in the shoe of jack-up unit.
Above-mentioned hydraulic pressure steel strand lifting gear, wherein, described upward mooring anchor and described mooring anchor down are the taper scroll chuck of axle center hollow.
Above-mentioned hydraulic pressure steel strand lifting gear, wherein, described some steel strand are 38.
Above-mentioned hydraulic pressure steel strand lifting gear, wherein, described hydraulicefficiency elevation structure is connected with outside operating-controlling mechanism.
The utility model hydraulic pressure steel strand lifting gear has following advantage owing to adopted the hydraulic pressure lifting mechanism that is made of hollow hydraulic jack and steel strand:
1, effectively lifting travel is big;
2, compact conformation;
3, can realize infinitely variable speeds;
4, further reduced the cost of production of platform.
Description of drawings
Fig. 1 is the loading schematic diagram of a kind of embodiment of the utility model hydraulic pressure steel strand lifting gear;
Fig. 2 a is the view of platform when being in stationary state that is mounted with the utility model hydraulic pressure steel strand lifting gear;
Fig. 2 b is the view of platform in adjusting uphill process that is mounted with the utility model hydraulic pressure steel strand lifting gear;
Fig. 2 c is that the platform that is mounted with the utility model hydraulic pressure steel strand lifting gear has been adjusted later working state schematic representation in rising;
Fig. 3 a, Fig. 3 b Fig. 3 c and Fig. 3 d are the principle schematic that the utility model hydraulic pressure steel strand lifting gear realizes promoting loading process.
The specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments, but not as qualification of the present utility model.
As shown in Figure 1, the utility model hydraulic pressure steel strand lifting gear is installed on the jack-up unit deck, be close to jack-up unit spud leg 2, device is made up of hydraulicefficiency elevation structure 31 and some steel strand 32, here every cover hydraulic pressure steel strand lifting gear need be used 38 steel strand, and the type of steel strand does not temporarily limit.As Fig. 2 a, shown in Fig. 2 b and Fig. 2 c, hydraulicefficiency elevation structure 31 is by a kind of known hollow hydraulic press 310, last mooring anchor 311, following mooring anchor 312 is formed, be provided with known hollow hydraulic piston 3101 in the hollow hydraulic press 310, last mooring anchor 311 connects the top that places hollow hydraulic piston 3101, following mooring anchor 312 is located at the bottom of hollow hydraulic press 310, on, the effect of following mooring anchor mainly is to be used for clamping steel strand 32, on, the axle center of following mooring anchor is a hollow, steel strand 32 are from last mooring anchor 311, hollow hydraulic press 310 reaches down, and the axle center of mooring anchor 312 hollows passes, on making, following mooring anchor can tightly be clamped steel strand 32, on, following mooring anchor is designed to the taper scroll chuck.Hydraulicefficiency elevation structure 31 is connected with outside operating-controlling mechanism.
The utility model hydraulic pressure steel strand lifting gear realizes that lifting process mainly divided for three steps finished:
The first step: shown in Fig. 2 a, mooring anchor 312 pins steel strand 32 under the lifting gear, and loaded article 7 is connected with steel strand 32, will go up mooring anchor 311 and unclamp;
Second step: shown in Fig. 2 b, to go up mooring anchor 311 lockings, unclamp steel strand 32 by mooring anchor 312 under the operating-controlling mechanism order, make operating-controlling mechanism start hollow hydraulic press 310 and make hollow hydraulic piston 3101 risings wherein and promote upward mooring anchor 311 uplink synchronizations, loaded article 7 rises thereupon.
The 3rd step: shown in Fig. 2 c, when piston 3101 moves to the up stroke dead point, following mooring anchor 312 is locked, and last mooring anchor 311 unclamps, 3101 withdrawals of hollow hydraulic piston.
Repeated for the second and the 3rd step, can realize that loaded article promotes continuously, the principle of transferring of loaded article gets final product according to above-mentioned principle reverse operating.
Single cover hydraulic pressure steel strand lifting gear major parameter is as follows:
Safe working load: 588t
Operating pressure: 270～320bar
Lifting test pressure: 735t
Main hydraulic cylinder test pressure: 405～480bar
Stroke: 500mm
Rising or falling speed: 40m/h
Operating temperature :-20～40 ℃
Single cover weight: about 12000kg
Dynamicliquid pressure station power consumption: single cover power consumption 200kw
In the present embodiment, about 3500 tons of the multifunction simple jack-up unit maximum lift load of selecting for use, four spud legs are arranged, with the utility model hydraulic pressure steel strand lifting gear 3 by being installed on the jack-up unit deck 1 shown in Fig. 3 a, every spud leg 2 is installed two covers, is arranged symmetrically in the both sides of every spud leg 2.Steel strand 32 1 ends tie up to the spud leg top of jack-up unit 1, and the other end passes jack-up unit deck 1 after passing from the axle center of last mooring anchor, hollow hydraulic piston and the following mooring anchor hollow of hydraulicefficiency elevation structure, be tied in the shoe 4 of jack-up unit.Jack-up unit is followed successively by from arriving the main operation operating mode of finishing before leaving to work behind the job site: pitching pile, ballast, platform rise to working gas gap, normal operating conditions, platform and drop to sea, pile pulling, and the base regime situation division of hydraulic pressure steel strand lifting gear is as follows:
(1) pitching pile: shown in Fig. 3 a, platform arrives the job site, platform weight is by seawater 5 buoyant support, hydraulic pressure steel strand lifting appliance 3 is installed on the Platform Deck 1, one end of steel strand 32 is fixed on spud leg 2 tops, the other end is fixed in the shoe 4, and part spud leg weight load acts on the steel strand 32.Hydraulic lift work descends up to mud face 6 spud leg, finishes pitching pile;
(2) ballast: when pitching pile is finished, start lifting gear 3, platform 1 is brought up to the above certain altitude of the water surface, usually plane off sea, platform 1 bottom is about 5 one meters, with the bolt-type pile leg locking device platform 1 is fixed on the spud leg 2, platform load is born by locking device, 3 unloadings of hydraulic pressure steel strand lifting gear.With ballast pump to the ballast tank water filling, because platform weight increases, spud leg 2 and platform 1 move down together under the ballast loading, shown in Fig. 3 b, mud face 6 certain depths are inserted in shoe 4, contact with the water surface 5 up to platform 1 bottom, Ballast Water in the emptying ballast tank then, unclamp pile leg locking device, platform weight is got back to again on the steel strand 32, and lifting gear 3 is brought up to the above certain altitude of the water surface to platform 1.Repeat above ballast process, reach designing requirement up to shoe 4 bearing loads;
(3) operate as normal: shown in Fig. 3 c, when the ballast process finishes, lifting gear 3 rises to safe air gap height to platform 1, with pile leg locking device platform 1 is fixed on the spud leg 2, platform load is born by locking device, hydraulic pressure steel strand device unloading, hydraulic pressure steel strand lifting gear 3 can be pulled down maintenance and maintenance from spud leg 2 tops or be used for other similar lifting platforms at this moment;
(4) pile pulling: shown in Fig. 3 d, when platform 1 need leave at the three unities end-of-job, unclamp pile leg locking device, platform weight is got back to again on the steel strand, and lifting gear 3 is reduced to platform 1 on the water surface 5, and platform weight is supported by buoyant of sea water.Before pile pulling begins, need to use jetting pipeline to dash stake, to reduce pile extraction resistance, primer fluid compressed steel twisted wire lifting gear 3 then, the towage height is extracted and brought up to shoe 4 from the mud face below 6, with pile leg locking device spud leg is fixed on the platform 1, spud leg load is born by locking device, 3 unloadings of hydraulic pressure steel strand lifting gear.Last platform 1 is by extremely next well location operation of tugboat towage.
Claims (4)
1. a hydraulic pressure steel strand lifting gear is characterized in that, comprising:
One hydraulicefficiency elevation structure is made up of hollow hydraulic press, last mooring anchor and following mooring anchor, is provided with the hollow hydraulic piston in the hollow hydraulic press, and last mooring anchor places the top of hollow hydraulic piston, and following mooring anchor is located at the bottom of hollow hydraulic press; And,
Some steel strand, one end ties up to the spud leg top of jack-up unit, the other end passes the jack-up unit deck after passing from the axle center of last mooring anchor, hollow hydraulic piston and the following mooring anchor hollow of described hydraulicefficiency elevation structure, be tied in the shoe of jack-up unit.
2. hydraulic pressure steel strand lifting gear according to claim 1 is characterized in that, described upward mooring anchor and described mooring anchor down are the taper scroll chuck of axle center hollow.
3. hydraulic pressure steel strand lifting gear according to claim 1 is characterized in that described some steel strand are 38.
4. hydraulic pressure steel strand lifting gear according to claim 1 is characterized in that described hydraulicefficiency elevation structure is connected with outside operating-controlling mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202766525U CN201817803U (en) | 2010-07-30 | 2010-07-30 | Lifting gear for hydraulic steel strand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202766525U CN201817803U (en) | 2010-07-30 | 2010-07-30 | Lifting gear for hydraulic steel strand |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201817803U true CN201817803U (en) | 2011-05-04 |
Family
ID=43915766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202766525U Expired - Lifetime CN201817803U (en) | 2010-07-30 | 2010-07-30 | Lifting gear for hydraulic steel strand |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201817803U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758088A (en) * | 2014-01-15 | 2014-04-30 | 中国长江三峡集团公司 | Hydraulically-controlled steel-strand hoisting device for ultra-large steel gates for irrigation works |
-
2010
- 2010-07-30 CN CN2010202766525U patent/CN201817803U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758088A (en) * | 2014-01-15 | 2014-04-30 | 中国长江三峡集团公司 | Hydraulically-controlled steel-strand hoisting device for ultra-large steel gates for irrigation works |
| CN103758088B (en) * | 2014-01-15 | 2017-01-04 | 中国长江三峡集团公司 | A kind of ultra-large type hydraulic steel gate hydraulic control steel strand wires headstock gear |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANGHAI RICHTECH CO., LTD. Free format text: FORMER NAME: SHANGHAI RICHTECH INC. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 200233 room 33, building 680, No. 30314, Guiping Road, Shanghai, Xuhui District Patentee after: Shanghai Richtech Co., Ltd. Address before: 200233 room 33, building 680, No. 30314, Guiping Road, Shanghai, Xuhui District Patentee before: Shanghai Richtech Inc. |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110504 Effective date of abandoning: 20170930 |