Basis Informatie.
Model NR.
ZTS synchronous hydraulic lifting jacks Integral L
Application
Warehouse Crane
Lift Mechanism
Screw Lift
Carrying Capacity
Middle-Level
Beschrijving
ZTS synchronous hydraulic lifting jacks Integral Lifting Technology Brief
ZTS Series hydraulic lifting system is a new large-scale component of lifting equipment, mainly to enhance the ZTS series jack, pump stations, control system.
First, the working principle and technical indicators
How it works: In clusters jack as executing agency, hydraulic pump stations powered equipment to strand hanging load, use the jack and lower gripper (automatic tool anchor) alternate action and jack piston and the cylinder along the opposite strand campaign to make the weight increases (continuous pan) or the amount of decline. This principle is the Anchorage Anchorage Technology and hydraulic jacks organic integration of technology, anchored by anchor strand, and then use computer centralized control of pump stations and hydraulic flow output (proportional valves, valve and other drivers device), driven piston lift jacks stretch, shrink (displacement sensor means), driven strand and member rise, drop, continuous pan, to achieve the overall large components to enhance the synchronization (translation) and the amount of decline, the system has a strong construction site adaptability and reliability.
The main control system consists of 3 parts hydraulic control systems, computer control systems and information feedback system. Feedback signal (lifting height) compared with the input instruction, computer based on this deviation signal control operation of the hydraulic system, the lifting an object in accordance with the input requirements of the Directive improved.
Technical indicators: single lift jacks technical indicators in the following table, lifting equipment according to different configurations of hydraulic pump station consisting of, can achieve lifting speed from 0 to 25 m / h, the system is controlled by PLC (digital computing operation of the electronic system can be programmable logic controllers), upgrading and drop synchronization accuracy ± 10mm. The above conventional configuration, can be designed, modified according to user requirements and manufacturing.
Features: large components lifting, flip-chip construction component upgrade.
Features:
(1), lifting equipment, small size, light weight, carrying capacity, convenient and flexible installation, especially suitable for tight spaces or indoor large tonnage lifting member;
(2), by upgrading equipment expanded combined, weight lifting, span an area not subject to restrictions;
(3) low relaxation strand, as long as there is a reasonable load-bearing lifting point, lifting height unrestricted;
(4), lift jacks anchorage having self-locking of the reverse movement, the lifting process is very safe, and members anywhere can enhance the process of long-term reliable locking;
(5), high degree of automation equipment, flexible operation, with automatic operation, a variety of semi-automatic operation mode of operation, single-point adjustment, manual work and so on. Display LCD display, touch-screen display, the button operation panel display, very intuitive. And the control system has a self-correcting saver, even if misuse would not cause accidents.
(6) with this device construction, short construction period, low cost, good economic returns
Scope: major building components, hangar roof trusses, bridges, power station equipment, offshore oil platforms lifting, can also be used for lifting heavy pieces of other industries King.
Second, process and technology
1. Scope
Enhancing the overall steel masts tower antenna of the present technology is suitable for large-scale public works and to enhance the overall gymnasium, swimming pool, hangars, theater, waiting (boat) room rack, roof, steel bridges and other components and large gantry as well as enhance the overall main airport terminal crane girder of steel roof (cover) of the slip.
2, the method and characteristics
Upgrade method
The current use of "load-bearing strand suspension, hydraulic lifting jacks clusters, computer-controlled synchronous" approach, which has the following two ways:
pull the formula (ie lifting type): The hydraulic lifting jacks provided on a permanent load-bearing structure of the column, the upper end of the suspension strand hydraulic lifting jacks fixed mandrel (anchor), the lower end of the lifting member with special tools and anchor anchor Even solid together, like "the spring and carry water," just like holding a strand of hydraulic lifting jacks put up, so that the member raised to the height of installation. The program that is on the pull hoisting ceremony.
Climbing (climbing pole): Suspended permanently fixed to the upper end of the strand structure (or base or temporary reinforcement of facilities associated with permanent), and the hydraulic lifting jacks provided at the lower end of the strand (hydraulic lift jacks even through solid anchorage and member), like "monkey climbing pole", as the hydraulic lifting jacks holding a strand to climb, so that the member raised to mounting height.
Climb multi-applications such as steel masts tower antenna hoisting height, the projected area in general, enhance the upright member of relatively light weight occasions.
Process Features
strand bearing, bearing not only quite economical manner, and high anchoring efficiency, and to solve the long-distance continuous upgrade requirements Construction technical problems.
by means of mechanical, electrical, fluid integration works, the lifting capacity according to actual needs can be configured in any combination, plus the application is already quite mature Anchorage anchoring technology, the entire upgrade process or in hover state, are quite safe and reliable.
computer-controlled synchronization, you can enhance the precision control liter difference between points, but also enhance the influence not set the number of time points and lifting point load differences.
can take full advantage of the use phase of the permanent structure or the like as a foundation to enhance the load-bearing column stages, seeks the construction phase and the use phase of the load-bearing structure (column) by the force substantially similar or identical, thus reducing the stage to perform for the upgrade The amount of reinforcing load-bearing structure, saving conventional construction auxiliary column (facility) and the reinforcement fees to be carried out.
high center of gravity for upright member: promotion (such as steel masts antenna), you can minimize its weight distribution (pieces), saving construction costs.
3, for the pull elevator technology in terms of key large-scale roof member
enhance the overall scope and form of determination:
Range, the range must be determined taking into account the load-bearing structure (permanent and temporary structures) the stability and the stability of the member itself, so before determine the scope and design of the unit must first civil engineering units to seriously negotiate, in order to consensus, and then develop and implement appropriate measures.
Form, select the form of one principle seeks to reduce the heavy work supporting column height, to ensure the stability of the work string; the second is to ensure that members themselves stability and security in place when the overall ascension, thus lifting point should be selected in line member The bottom chord nodes.
Selection and configuration determines boost points and lifting equipment
Upgrade determine the point:
Reasonably determine the number and location of the lifting points are enhancing the overall construction of a large roof a very important job, it is directly related to the member (roof) in the promotion process of stability, security and construction of security and economy.
The basic principle of reasonable and location is determined to enhance the number of points: First and ensure member (roof) stability during the lift; the second is to ensure the safety and quality of the premise, to minimize the number of promotion points; third is single equipment carrying capacity meet the design requirements; four is to enhance the position should be selected in the component (roof) at the bottom chord.
Enhance the selection and configuration of the device:
Lifting equipment, mainly hydraulic lift jacks, strand, pump stations and hydraulic control system. Equipment selection principle is: to meet promotion requirements in force, the pipeline should not be too long, the structure should be compact, strong, durable, maintenance party meet travel vertical speed, security and other functional requirements.
For large projection area, multi-point lifting, load large differences roof or enhance the overall grid can be different sizes, different rated load of hydraulic jacks, according to set requirements for the use of different combinations, both to ensure the difference between a small rise, and to ensure the stability and security of the roof and load-bearing columns.
Lifting points determined, to force a lifting points are calculated, according to the process of ascension of a variety of adverse working conditions, as well as to enhance the point of maximum force value as the basis for lifting equipment selection, according to size of the force to enhance equipment Reasonable combination of settings to ensure the safe use of a single strand: For the pull elevator, the safety factor should be greater than 3.5, most of the requirements of the existing construction safety factor of about 3, that is, a single strand of theoretical design force 9 tons; for climbing elevator, the safety factor should be greater than 5.5.
composition and installation of hydraulic lifting system
composition:
Each lifting point shall be provided a hydraulic lifting system, each lift system by the working column, table, load-bearing beams, hydraulic lift jacks, strand, dedicated spreader, three special anchor automated tools, special tools clips , strand guide tube, strand guide frame, displacement sensors, pressure transmitters, control valve and multi-stage pump head pump station systems and other components.
Wherein the hydraulic lifting jacks are main components: base, automatic tool anchor, pay special tools clip, the lower bracket, single-cylinder jack, piston internal strand guide tube, the central automated tools anchor (piston side), displacement sensors, the upper bracket, the upper anchorage automatic tool tray, automatic tool anchor the upper strand Rotary disc holders, steel cable tray and other help.
Wherein the pump station and sub-divided into the main pumping station, main pumping station for "a control a lifting point" setting can also be "a controlled multi-point lifting" setting, the program client initially required to be "a controlled twenty lifting points "setting. Work column, table and load-bearing beams, for different situations may be dedicated design, production, setting, they are the main hydraulic lifting jacks lifting equipment bearing bracket.
installation:
Installation order of the hoisting system are: the work string - table - bearing beam - hydraulic lifting jacks - dedicated spreader - strand - guide frame - private automatic tool anchor - pump station -????????? Control valve -? Computer Control System? - pipelines.
It requires the support base when the jack is not installed flat slope greater than 3/1000, 1/1000 should generally be in accordance with standards.
Tubing interfaces and electrical interfaces toward each mounted on one side (if position directional).
wear Strand
Most construction using the worn. This method is recommended in this case.
Ready to work:
The first step, the jack, the middle and lower three full automatic tool anchor in a relaxed state from the top (from the sub pump control, automatic tool control cylinder anchor anchor plate from the top). (Some need to jack piston extends about 100mm, after shrinking in favor of preset pretension jack or cylinder to remove temporary anchors.)
The second step, with a fixed end tools anchor pad paving, and stay out of the room under the cover of about 300mm spacing, and in a relaxed state.
The third step, when threading through the middle and lower three automatic tool anchor, checking after each hole is correct, the strand into the guide tube.
Process:
First, the strand into the guide tube, push jack, anchor the top of the automatic tool 1 person gently hold the lead into the guide tube, moving with the strand thrust.
Second, when the lower part of the cylinder wear clothing from the strand, the guide tube leads removed. Under the decentralized strand until near the automatic tool anchor slowed down, align the holes through the automatic tool anchor.
Third, when the strand away from the fixed end tools when there are 4-5 meters away from the anchor, penetrates the locking clips at any time, lift the strand when required if more decentralization, will move up again locking clip until the steel When the strands through the anchor hole tool fixed end anchor clips should be put on the incoming strand head into the clip platen hole location. The upper part will slack strand taut strand is a reference to the automatic tool locking clip anchor.
Fourth, lift jacks on automated tools beyond the upper strand anchor 500mm, jack the upper strand 5 people wear division: 1 person responsible for communications liaison, 1 person in charge of the shop put pieces of holes, put in charge of others line; the lower part of the jack 2 person responsible for checking and automatic tool anchor holes, finally take the lead guide tube; lower fixed tool anchor at three people, is responsible for wearing a clip, observe strand decentralization, finally locking and so on.
Fifth, wearing Strand, have good communication up and down the liaison, and prespecified threading sequence, usually after the first period can be clockwise or counter-clockwise threading sequence, according to the ranks of the order also look at select threading. When stringing fixed tool axis anchor jack should be the same as given in good order after stringing. When piercing the automatic tool anchor strand decentralization, devolution should be noted that the direction of the strand and put a certain distance, to prevent the fight twist.
Sixth, according to the above method will put a strand jack so fixed tool anchor near the lift anchor bits matter clip, put pressure plate, screw fixing bolts. Next preload can be carried out after the inspection.
Preload Strand
To make each strand must be carried out by the same preload force. On top of the uppermost anchor pretensioner automated tools or tools under the pretension anchor can be fixed. Preload using YCJ26 type front cassette sub pump jack and working together, we will pull each strand to 4MPa, after tightening should first outer diagonal operation. After making sure that the correct strand wear, twist phenomenon did not play after the end of the preload.
strand in ascension carding and guide:
Upgrading and climb different, want to sort strand jack lifting guide, let freedom excluded from power, does not consider the case after strand recycling, you can always cut off. Strand consider reuse, produced a comb frame, carding frame with angle iron welded to the steel columns, the role is to ensure that this sort disc tray from the following strand bent on automated tools to ensure freedom anchor opened. Comb plate with three automatic tool jack anchor holes arranged in the same, there are bays.
first place - elevated to the average design elevation values:
When approaching elevation lift overall steel 500mm, at various points to monitor, measure and determine the average elevation value design based on monitoring data operations. Each bearing a different elevation, individual point reached seated height that is closed pump, until the entire system can not operate all day, using a single manual adjustment operation, monitoring the system pressure, in addition to considering the system pressure gauge should be considered Steel structure of the forces themselves.
After the whole steel structure designed to achieve an average elevation value, install welded steel bracket.
Second place - the whole steel structure is placed on the bracket:
Reached the top of the welded steel bracket about 50mm, lift cylinders around 190mm, opened on automatic tool anchor, and confirmed open, shrink tanks, until strand relaxation. You can now anchor plate bolt loosening fixing tool, remove the clip platen, remove the clips sequentially extracts strand is, the overall steel bearings have all landed on all steel bracket, enhance the process ends.
Single lift jacks technical indicators:
Lift jacks Model TS50B-200 TS100B-200 TS200B-200
Rated oil pressure MPa 25 26 28
Rated lifting force KN 502 1030 2038
Stroke mm 200 200 200
Feedthrough aperture mm? 94? 130? 190
Strand diameter F15.24 F15.24 F15.24
Strand root number 5919
Weight Kg 320 480 780
Dimensions mm? 240X1665? 315X1665? 440X1665
Note: The above technical parameters to the finished product parameters prevail.