CN107311069A - A kind of lowering or hoisting gear for construction - Google Patents

A kind of lowering or hoisting gear for construction Download PDF

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Publication number
CN107311069A
CN107311069A CN201710657471.3A CN201710657471A CN107311069A CN 107311069 A CN107311069 A CN 107311069A CN 201710657471 A CN201710657471 A CN 201710657471A CN 107311069 A CN107311069 A CN 107311069A
Authority
CN
China
Prior art keywords
lifter plate
steel wire
construction
lowering
wire rope
Prior art date
Application number
CN201710657471.3A
Other languages
Chinese (zh)
Other versions
CN107311069B (en
Inventor
江远生
Original Assignee
芜湖泰庆电子科技有限公司
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Priority to CN201710657471.3A priority Critical patent/CN107311069B/en
Publication of CN107311069A publication Critical patent/CN107311069A/en
Application granted granted Critical
Publication of CN107311069B publication Critical patent/CN107311069B/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/02Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms suspended from ropes, cables, or chains or screws and movable along pillars
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F17/00Safety devices, e.g. for limiting or indicating lifting force
    • B66F17/006Safety devices, e.g. for limiting or indicating lifting force for working platforms
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/10Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks
    • B66F7/16Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by one or more hydraulic or pneumatic jacks
    • B66F7/18Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by one or more hydraulic or pneumatic jacks by a single central jack
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/28Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems

Abstract

The present invention relates to a kind of lowering or hoisting gear for construction, including support frame, fixed plate, first supporting plate, hydraulic cylinder and sliding bar, support frame as described above is integral type structure with fixed plate, and fixed plate is respectively welded support base and safety basement, first supporting plate is fixed on support frame, and first be installed with hoist engine in supporting plate, steel wire rope is provided with the hoist engine, and steel wire rope fits with movable pulley, the two ends of the movable pulley are flexibly connected with support frame, piston rod is provided with the hydraulic cylinder, second supporting plate is integral type structure by fixture and locating rod, the fixture is passed through from sliding groove, the locating rod is passed through from safety basement, the sliding bar is passed through from lifter plate.The lowering or hoisting gear for being used for construction is provided with hoist engine and hydraulic cylinder, and two kinds lifted using elevator machine travel and hydraulic cylinder are combined the up-down mode that mode is used as the device, and such security is higher, and lifting effect is good.

Description

A kind of lowering or hoisting gear for construction

Technical field

The present invention relates to construction equipment technical field, specially a kind of lowering or hoisting gear for construction.

Background technology

Construction refers to the production activity of engineering construction implementation phase, is the building course of all kinds of buildings, can also Say it is various lines on design drawing, in specified place, become process in kind.It includes basic engineering construction, master Body structure construction, roof construction, decorative engineering construction etc..The place of construction operation is referred to as " construction site " or cried " job site ", is also named building site.With developing rapidly for construction industry, it is frequently necessary to use lowering or hoisting gear in work progress Carry out the conveying of goods

Lowering or hoisting gear was indispensable vertical transportation machinery in construction, from First Domestic rack-and-pinion in 1973 Since formula building hoist is born, after more than 30 years continue to develop, lift was in structure type, function, purposes, safety device There is very big change and progress etc. many aspects.

Existing lowering or hoisting gear it is simple in construction, transport goods when, easily there is the phenomenon that goods falls, there are peace Full hidden danger, security is relatively low, while up-down mode is single, practicality is not strong, it is impossible to meet the use demand of people, in view of more than Defect present in prior art, it is necessary to it is further improved, makes it more for practicality, can just meet actual use feelings Condition.

The content of the invention

It is an object of the invention to provide a kind of lowering or hoisting gear for construction, to solve to carry in above-mentioned background technology The existing lowering or hoisting gear gone out it is simple in construction, transport goods when, easily there is the phenomenon that goods falls, security is relatively low, Up-down mode is single simultaneously, there are potential safety hazard, practicality is not strong, it is impossible to the problem of meeting the use demand of people.

To achieve the above object, the present invention provides following technical scheme:A kind of lowering or hoisting gear for construction, including Support frame, fixed plate, the first supporting plate, hydraulic cylinder and sliding bar, support frame as described above are integral type structure with fixed plate, and are fixed Plate is respectively welded support base and safety basement, and first supporting plate is fixed on support frame, and solid in the first supporting plate Dingan County is equipped with hoist engine, the hoist engine and is provided with steel wire rope, and steel wire rope fits with movable pulley, and the two of the movable pulley End is flexibly connected with support frame, piston rod is provided with the hydraulic cylinder, and hydraulic cylinder is fixed in the second supporting plate, and described the Two supporting plates are integral type structure by fixture and locating rod, and the fixture is passed through from sliding groove, the locating rod from Passed through in safety basement, and the bottom of locating rod is provided with cushion socket, the safety basement and offers sliding groove, the slip Bar is passed through from lifter plate, and the bottom of sliding bar is welded in fixed plate.

It is preferred that, the lifter plate includes the first lifter plate, the second lifter plate, connecting rod and fixing groove, and first liter The bottom end surface of drop plate is provided with connecting rod, while the top of the second lifter plate offers fixing groove, the connecting rod and fixation Groove is mutually engaged.

It is preferred that, the steel wire rope includes main rope, secondary steel wire rope, connector, sponge protective case, protective cover, and Main rope is connected with secondary steel wire rope by connector, is connected while secondary steel wire rope is fixed by connector and the second lifter plate Connect, sponge protective case is enclosed with the secondary steel wire rope, and the two ends of secondary steel wire rope are located inside protective cover, and protective cover is installed In on connector.

It is preferred that, the main rope is connected with four secondary steel wire ropes, and A shaft centre line of the secondary steel wire rope on lifter plate It is symmetrical arranged.

It is preferred that, first lifter plate and the second lifter plate top end surface are in same level, and the first lifter plate Top end surface be in concavo-convex striated structure, while the two ends of the first lifter plate are connected with the top of piston rod.

It is preferred that, the equal rectangular array distribution of connecting rod and fixing groove, and the tapered structure in connecting rod bottom.

It is preferred that, the spacing between the second supporting plate end face outside is equal to the length of the first lifter plate, and first liter Drop plate and the second supporting plate are parallel to each other.

It is preferred that, the top of the locating rod is fixed with the second lifter plate and welded, and the length of locating rod is less than sliding bar Length.

It is preferred that, bottom and the cushion socket top end surface of the locating rod fit, and a pair of locating rod and cushion socket 1 Should.

It is preferred that, the length of the sliding groove and safety basement it is highly consistent.

Compared with prior art, the beneficial effects of the invention are as follows:The lowering or hoisting gear for being used for construction is provided with elevator Machine and hydraulic cylinder, two kinds lifted using elevator machine travel and hydraulic cylinder are combined the liter that mode is used as the lifter plate of the device Drop mode, such security is higher, and lifting effect is good, and when operation irregularity occurs in hydraulic cylinder, lifter plate will not drop at once Get off, be not in the phenomenon that goods falls, prevented potential safety hazard, while be provided with locating rod, when there is wire cable rupture When, it is ensured that lifter plate is not in inclined phenomenon, so that lifter plate smoothly falls, further improves safety Property, at the same by cushion socket can reduce lifter plate fall when impulsive force, with certain damping effect, protection equipment not by Damage, service life is long, main rope is connected with four secondary steel wire ropes, and A shaft centre line pair of the secondary steel wire rope on lifter plate Claim to set, such hoist engine is more steady during by rope hoisting lifter plate, is not in inclined phenomenon, together When goods be difficult to slide from lifter plate, using effect is good, is provided with protective cover, can prevent because of secondary wire cable rupture, Whole steel wire rope is quickly thrown away, and coordinates sponge protective case, when can prevent that steel wire rope from throwing away, and is damaged caused by dynamics is excessive to goods It is bad, it is possible to reduce loss, using effect is good.

Brief description of the drawings

Fig. 1 is a kind of positive structure diagram of lowering or hoisting gear for construction of the invention;

Fig. 2 is that a kind of steel wire rope of lowering or hoisting gear for construction of the invention and lifter plate connecting side regard structural representation Figure;

Fig. 3 is a kind of steel wire rope mplifying structure schematic diagram of lowering or hoisting gear for construction of the invention;

Fig. 4 is lifter plate and the safety basement side view structural representation of a kind of lowering or hoisting gear for construction of the invention Figure;

Fig. 5 is the second supporting plate and safety basement local overlooking knot of a kind of lowering or hoisting gear for construction of the invention Structure schematic diagram.

In figure:1st, support frame, 2, fixed plate, 3, support base, the 4, first supporting plate, 5, hoist engine, 6, steel wire rope, 601, Main rope, 602, secondary steel wire rope, 603, connector, 604, sponge protective case, 605, protective cover, 7, lifter plate, 701, first Lifter plate, the 702, second lifter plate, 703, connecting rod, 704, fixing groove, 8, movable pulley, 9, hydraulic cylinder, 10, piston rod, 11, Two supporting plates, 12, fixture, 13, safety basement, 14, locating rod, 15, sliding bar, 16, cushion socket, 17, sliding groove.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made Embodiment, belongs to the scope of protection of the invention.

Fig. 1-5 are referred to, the present invention provides a kind of technical scheme:A kind of lowering or hoisting gear for construction, including branch Support 1, fixed plate 2, support base 3, the first supporting plate 4, hoist engine 5, steel wire rope 6, main rope 601, secondary steel wire rope 602, Connector 603, sponge protective case 604, protective cover 605, lifter plate 7, the first lifter plate 701, the second lifter plate 702, connecting rod 703rd, fixing groove 704, movable pulley 8, hydraulic cylinder 9, piston rod 10, the second supporting plate 11, fixture 12, safety basement 13, positioning Bar 14, sliding bar 15, cushion socket 16 and sliding groove 17, support frame 1 and fixed plate 2 are integral type structure, and fixed plate 2 is welded respectively Support base 3 and safety basement 13 are connected to, the first supporting plate 4 is fixed on support frame 1, and are fixedly mounted in the first supporting plate 4 Have and steel wire rope 6 is provided with hoist engine 5, hoist engine 5, and steel wire rope 6 fits with movable pulley 8, steel wire rope 6 includes king wire Rope 601, secondary steel wire rope 602, connector 603, sponge protective case 604, protective cover 605, and main rope 601 and secondary steel wire rope 602 are connected by connector 603, while secondary steel wire rope 602 is fixedly connected by connector 603 with the second lifter plate 702, it is secondary Sponge protective case 604 is enclosed with steel wire rope 602, and the two ends of secondary steel wire rope 602 are located inside protective cover 605, and protective cover 605 are installed on connector 603, and main rope 601 is connected with four secondary steel wire ropes 602, and secondary steel wire rope 602 is on lifter plate 7 A shaft centre lines are symmetrical arranged, and can smoothly drive lifter plate 7 to carry out raising and lowering, when piece secondary steel wire rope of appearance During 602 fracture, do not interfere with and too much influence is caused to lifter plate 7, security is higher, two ends and the support frame 1 of movable pulley 8 are lived Piston rod 10 is provided with dynamic connection, hydraulic cylinder 9, and hydraulic cylinder 9 is fixed in the second supporting plate 11, the outside of the second supporting plate 11 Spacing between end face is equal to the length of the first lifter plate 701, and the first lifter plate 701 and the second supporting plate 11 are parallel to each other, It is rational in infrastructure so as to which hydraulic cylinder 9 can drive the stable raising and lowering of the first lifter plate 701 by piston rod 10, second Fagging 11 is integral type structure by fixture 12 and locating rod 14, and the top of locating rod 14 is fixed with the second lifter plate 702 and welded Connect, and length of the length less than sliding bar 15 of locating rod 14, the length of locating rod 14 is that hoist engine 5 is pulled by steel wire rope 6 The range of lifter plate 7, so that two kinds of progress that can be combined that the traction of hoist engine 5 and hydraulic cylinder 9 are lifted are used, security Height, bottom and the top end surface of cushion socket 16 of locating rod 14 are fitted, and locating rod 14 is corresponded with cushion socket 16, so that When obtaining the whereabouts of locating rod 14, it can fairly fall on cushion socket 16, good damping effect, fixture 12 is worn from sliding groove 17 Cross, the length of sliding groove 17 is highly consistent with safety basement 13, ensure that fixture 12 there are enough movings range, so that Enable the second supporting plate 11 as locating rod 14 is freely moved up and down, locating rod 14 is worn from safety basement 13 Cross, and the bottom of locating rod 14 is provided with cushion socket 16, safety basement 13 and offers sliding groove 17, sliding bar 15 is from lifter plate Passed through in 7, lifter plate 7 includes the first lifter plate 701, the second lifter plate 702, connecting rod 703 and fixing groove 704, and first The bottom end surface of lifter plate 701 is provided with connecting rod 703, while the top of the second lifter plate 702 offers fixing groove 704, even Extension bar 703 is mutually engaged with fixing groove 704, when the first lifter plate 701 whereabouts occurs because failing hydraulic cylinder 9, passes through connecting rod 703 with fixing groove 704, the first lifter plate 701 can be caused to be sticked on the second lifter plate 702, prevented on the first lifter plate 701 Goods drop, using effect is good, and the first lifter plate 701 and the top end surface of the second lifter plate 702 are in same level, and the The top end surface of one lifter plate 701 is in concavo-convex striated structure, while the two ends of the first lifter plate 701 and the top phase of piston rod 10 The surface of connection, the first lifter plate 701 and the second lifter plate 702 is in a plane, is easy to people to place article, and first liter Drop plate 701 surface has skidproof effect, and article is difficult to slip down from the first lifter plate 701, rational in infrastructure, connecting rod 703 It is distributed with the equal rectangular array of fixing groove 704, and the tapered structure in the bottom of connecting rod 703, when connecting rod 703 falls, it is easy to Connecting rod 703 fastens with fixing groove 704, so as to avoid connecting rod 703 from touching the notch edge of fixing groove 704, influences card Effect is closed, and the bottom of above-mentioned sliding bar 15 is welded in fixed plate 2.

The operation principle of the present embodiment:This is used for the lowering or hoisting gear of construction, in use, can pass through support base 3 It is with safety basement 13 that the device fixed placement is good, when needing to carry out conveying articles, goods is positioned on lifter plate 7, made Hoist engine 5 switches on power and it is started working, and hoist engine 5 starts constantly to furl steel wire rope 6 by movable pulley 8, so that logical Crossing main rope 601 and secondary steel wire rope 602 can smoothly drive lifter plate 7 to be risen along sliding bar 15, on lifter plate 7 Equally locating rod 14 can be driven to rise during rising, locating rod 14 is carried out in sliding groove 17 by fixture 12 to moving up It is dynamic, and then drive the second supporting plate 11 to rise, such second supporting plate 11 is just moved up as lifter plate 7 is synchronous, when secondary steel When the top or bottom of cord 602 are broken, protective cover 605 can block secondary steel wire rope 602, prevent it from quickly throwing away, And then impulsive force when secondary steel wire rope 602 is thrown away is reduced, fracture occur in the middle of steel wire rope 602 makes, and sponge protective case 604 can be with Play a protective role, prevent that goods is caused when steel wire rope 602 from throwing away to damage, when arriving certain altitude by the lifting of hoist engine 5, Hoist engine 5 is stopped, and hydraulic cylinder 9 is switched on power and it is started working, and hydraulic cylinder 9 drives the by piston rod 10 One lifter plate 701 rises, and then carries out being delivered up material, and when there is 9 operation irregularity of hydraulic cylinder, the first lifter plate 701 exists It can be dropped into dropping process on the second lifter plate 702, lifter plate 7 can be prevented by main rope 601 and secondary steel wire rope 602 Fall down, the potential safety hazard brought so as to prevent goods from falling, when there is the fracture of steel wire rope 6, in locating rod 14 Under effect, the slide downward on safety basement 13 by locating rod 14 of lifter plate 7, so that it is not in because steel wire rope 6 is disconnected to ensure Splitting causes lifter plate 7 to occur tilting the phenomenon for causing goods to fall, can be quick to locating rod 14 in the presence of cushion socket 16 Impulsive force during whereabouts carries out certain buffering, it is ensured that equipment is without damage, improves its service life, here it is the device Whole work process.

Although the present invention is described in detail with reference to the foregoing embodiments, for those skilled in the art, It can still modify to the technical scheme described in foregoing embodiments, or which part technical characteristic is carried out etc. With replacing, within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc. should be included in this Within the protection domain of invention.

Claims (10)

1. a kind of lowering or hoisting gear for construction, including support frame (1), fixed plate (2), the first supporting plate (4), hydraulic cylinder And sliding bar (15) (9), it is characterised in that:Support frame as described above (1) and fixed plate (2) are integral type structure, and fixed plate (2) point Support base (3) and safety basement (13) are not welded with, and first supporting plate (4) is fixed on support frame (1), and first It is installed with fagging (4) on hoist engine (5), the hoist engine (5) and is provided with steel wire rope (6), and steel wire rope (6) and dynamic cunning Wheel (8) is fitted, and the two ends of the movable pulley (8) are flexibly connected with support frame (1), and piston is provided with the hydraulic cylinder (9) Bar (10), and hydraulic cylinder (9) is fixed in the second supporting plate (11), second supporting plate (11) by fixture (12) with it is fixed Position bar (14) is integral type structure, and the fixture (12) passes through from sliding groove (17), and the locating rod (14) is from safety bottom Passed through in seat (13), and the bottom of locating rod (14) is provided with cushion socket (16), the safety basement (13) and offers slip Groove (17), the sliding bar (15) is passed through from lifter plate (7), and the bottom of sliding bar (15) is welded in fixed plate (2).
2. a kind of lowering or hoisting gear for construction according to claim 1, it is characterised in that:The lifter plate (7) Include the first lifter plate (701), the second lifter plate (702), connecting rod (703) and fixing groove (704), and the first lifter plate (701) bottom end surface is provided with connecting rod (703), while the top of the second lifter plate (702) offers fixing groove (704), The connecting rod (703) is mutually engaged with fixing groove (704).
3. a kind of lowering or hoisting gear for construction according to claim 2, it is characterised in that:The steel wire rope (6) Include main rope (601), secondary steel wire rope (602), connector (603), sponge protective case (604), protective cover (605), and Main rope (601) is connected with secondary steel wire rope (602) by connector (603), while secondary steel wire rope (602) passes through connector (603) it is fixedly connected with the second lifter plate (702), sponge protective case (604) is enclosed with the secondary steel wire rope (602), and it is secondary The two ends of steel wire rope (602) are located at protective cover (605) inside, and protective cover (605) is installed on connector (603).
4. a kind of lowering or hoisting gear for construction according to claim 3, it is characterised in that:The main rope (601) four secondary steel wire ropes (602) are connected with, and secondary steel wire rope (602) is symmetrical arranged on the A shaft centre lines of lifter plate (7).
5. a kind of lowering or hoisting gear for construction according to claim 2, it is characterised in that:First lifter plate (701) it is in the second lifter plate (702) top end surface in same level, and the top end surface of the first lifter plate (701) is in recessed Convex striated structure, while the two ends of the first lifter plate (701) are connected with the top of piston rod (10).
6. a kind of lowering or hoisting gear for construction according to claim 2, it is characterised in that:The connecting rod (703) it is distributed with fixing groove (704) rectangular array, and the tapered structure in connecting rod (703) bottom.
7. a kind of lowering or hoisting gear for construction according to claim 2, it is characterised in that:Second supporting plate (11) spacing between end face outside is equal to the length of the first lifter plate (701), and the first lifter plate (701) and the second supporting plate (11) it is parallel to each other.
8. a kind of lowering or hoisting gear for construction according to claim 2, it is characterised in that:The locating rod (14) Top and the second lifter plate (702) it is fixed weld, and the length of locating rod (14) is less than the length of sliding bar (15).
9. a kind of lowering or hoisting gear for construction according to claim 1, it is characterised in that:The locating rod (14) Bottom fitted with cushion socket (16) top end surface, and locating rod (14) and cushion socket (16) are corresponded.
10. a kind of lowering or hoisting gear for construction according to claim 1, it is characterised in that:The sliding groove (17) length is highly consistent with safety basement (13).
CN201710657471.3A 2017-08-03 2017-08-03 A kind of lifting device for construction CN107311069B (en)

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Application Number Priority Date Filing Date Title
CN201710657471.3A CN107311069B (en) 2017-08-03 2017-08-03 A kind of lifting device for construction

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CN107311069A true CN107311069A (en) 2017-11-03
CN107311069B CN107311069B (en) 2019-03-19

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CN107954355A (en) * 2017-11-17 2018-04-24 亿嘉和科技股份有限公司 Small-sized electric lifting device
CN108147304A (en) * 2017-12-26 2018-06-12 郑州默尔电子信息技术有限公司 A kind of pulley control is for building machinery Lifting carrying platform
CN108163754A (en) * 2017-12-26 2018-06-15 郑州默尔电子信息技术有限公司 A kind of rack-and-pinion control is for building machinery Lifting carrying platform
CN108217515A (en) * 2017-12-29 2018-06-29 河南城建学院 Bridge construction machinery quick-lift attachreactor
CN108557683A (en) * 2018-01-16 2018-09-21 深圳市晟腾企业管理有限公司 A kind of rack-and-pinion control construction material transport lifting gear
CN108910748A (en) * 2018-06-28 2018-11-30 陈莲华 A kind of construction lifting device
CN109018641A (en) * 2018-07-25 2018-12-18 芜湖英特杰智能科技有限公司 A kind of damping anti-moisture mechanism for electric of electromechanical equipment instrument

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CN108557683A (en) * 2018-01-16 2018-09-21 深圳市晟腾企业管理有限公司 A kind of rack-and-pinion control construction material transport lifting gear
CN108910748A (en) * 2018-06-28 2018-11-30 陈莲华 A kind of construction lifting device
CN109018641A (en) * 2018-07-25 2018-12-18 芜湖英特杰智能科技有限公司 A kind of damping anti-moisture mechanism for electric of electromechanical equipment instrument

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