CN103879858A - Construction elevator and lifting point setting and assembling method thereof - Google Patents
Construction elevator and lifting point setting and assembling method thereof Download PDFInfo
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- CN103879858A CN103879858A CN201410097777.4A CN201410097777A CN103879858A CN 103879858 A CN103879858 A CN 103879858A CN 201410097777 A CN201410097777 A CN 201410097777A CN 103879858 A CN103879858 A CN 103879858A
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Abstract
The invention discloses a construction hoist and a hoisting point setting and assembling method thereof, the construction hoist comprises a gear driving system and a suspension cage (1), a gear (4) of the gear driving system is in meshing transmission with a rack (3) vertically installed on a guide rail frame (2), so that the suspension cage is pulled to move up and down along the guide rail frame through a hoisting point (L), a meshing common normal line (KK ') between the gear and the rack is transversely offset relative to a vertical central line (HH') of the guide rail frame, the gravity center (O) of the gear driving system is positioned on a transverse first side of the meshing common normal line, a coupled hoisting point is positioned on a transverse second side of the meshing common normal line, and the hoisting point is set to enable the forward moment of the hoisting point pulling force (G0) relative to the meshing common normal line to balance the reverse moment brought by the gravity (G1) of the gear driving system. The elevator improves the stress condition of meshing transmission, reduces the abrasion of parts such as a gear, a rack, a back wheel, a measuring roller and the like, and ensures that the construction elevator runs more stably and reliably.
Description
Technical field
The present invention relates to a kind of building hoist, particularly, relate to the setting of the hoisting point position in building hoist.
Background technology
Building hoist (claiming again construction elevator) is for lift-launch personnel or goods on operation building site along guide rail bracket (or claiming tower crane) lifting moving, and safety and traveling comfort when it uses are most important.Building hoist structurally generally includes cage and drive system model thereof.In the time of operation, the tooth bar engaged transmission on tooth and the guide rail bracket of drive system model, and pull cage to carry out dipping and heaving by suspension centre.
As Fig. 1 a to Fig. 1 c has shown multi-form building hoist.Wherein, in building hoist shown in Fig. 1 a, between tooth bar 3 and gear 4, engage vertical line of centers HH ' (with the vertical line of centers of the cage 1 overlap) lateral offset of common normal KK ' with respect to guide rail bracket 2, between cage 1 and drive system model, be that two suspension centre forms and employing otic placode are connected, two otic placodes 10 are arranged symmetrically with respect to vertical line of centers HH '.Building hoist shown in Fig. 1 b and Fig. 1 a are similar, but have adopted pull bar 11 to substitute otic placode 10.Building hoist shown in Fig. 1 c is that with the difference of Fig. 1 a, Fig. 1 b tooth bar mid-(engaging common normal overlaps with the vertical line of centers of guide rail bracket) and pull bar are wherein arranged symmetrically with.
All there is different defects in the building hoist of these three kinds of versions.With reference to Fig. 1 a, in the actual moving process of building hoist, to find, drive system model is subject to offset loading force, makes gear 4 and backgear 8 serious wear, causes engagement not steady, produces shake.Meanwhile, owing to adopting ears plates to be rigidly connected, need to ensure the position of weld precision of the otic placode on bogie and the cage of drive system model, if there is any position deviation, all can make bearing pin to install, need to chop off the ears and again join weldering, and interchangeability is poor, can not exchange with other cages.With reference to Fig. 1 b, it has the defect such as wearing and tearing and shake identical with Fig. 1 a, and due to suspension centre place adopt elasticity connect pull bar form, for ensure install, pull bar has larger degree of freedom, jitter phenomenon than otic placode connect even more serious.For the mid-Fig. 1 c of tooth bar, although engaging stress is more excellent, owing to adopting on market, (formation guide rail bracket) standard knot of tooth bar biasing is more, makes the mid-standard knot interchangeability of tooth bar poor.And tooth bar is arranged on the middle part of the horizontal web member of standard knot, is the most weak position of rigidity, thereby is unfavorable for the stability of operation.
For the building hoist of tooth bar biasing, technical personnel has carried out many trials, and to solve, above-mentioned engaging stress is unbalanced, serious wear and easily produce the problems such as shake.Example as shown in Figure 2 according in the single suspension centre building hoist of the disclosed one of notification number CN203255838U, more balanced for realizing engaging stress, single gear 4 engages with tooth bar by two carrier gears 12.The poor problem of engaged transmission force-bearing situation of bringing for solving cage load over centre, is arranged on suspension centre L on the vertical line of centers HH ' of guide rail bracket (or cage).But in actual moving process, wearing and tearing and jitter phenomenon that this building hoist produces are still more serious.
Summary of the invention
The object of this invention is to provide a kind of building hoist and suspension centre thereof and set and assemble method, to improve force-bearing situation and the running stability of engaged transmission.
For achieving the above object, according to an aspect of the present invention, a kind of building hoist is provided, comprise drive system model and cage, the gear of described drive system model be vertically arranged on the tooth bar engaged transmission on guide rail bracket, thereby pull described cage along described guide rail bracket together dipping and heaving by suspension centre, wherein, between described gear and described tooth bar, engage the vertical line of centers lateral offset of common normal with respect to described guide rail bracket, the center of gravity of described drive system model is positioned at horizontal first side of described engagement common normal, the described suspension centre of the coupling between described drive system model and described cage is positioned at described horizontal the second side that engages common normal.
Preferably, the described suspension centre of coupling along described horizontal the second lateral deviation from the transverse distance x of described engagement common normal is:
x＝G1*a/(G2+G3)
Wherein, a is described center of gravity and the described transverse distance engaging between common normal, and G1 is the gravity that acts on the described drive system model in the center of gravity of described drive system model, the gravity that G2 is described cage, and the G3 rated load that is described building hoist.
Preferably, described drive system model comprises bogie and is arranged on described gear, retarder and the drive motor on this bogie, described G1 comprises the making a concerted effort of gravity of described bogie, gear, retarder and drive motor, and described suspension centre is formed on the underframe of described bogie.
Preferably, described drive system model also comprises that vertical interval, edge is arranged in multiple backgears and the multiple side wheel on described bogie, described backgear and described gear are respectively in the both sides of described tooth bar, and multiple described side wheels are separately positioned on the both sides of described bogie and slide along the side direction slide rail of described guide rail bracket.
Preferably, the vertical line of centers of described guide rail bracket overlaps with the vertical line of centers of described cage, and is all positioned at described horizontal first side of described engagement common normal.
Preferably, between described drive system model and described cage, form single suspension centre.
Preferably, be formed with two suspension centres between described drive system model and described cage, the described suspension centre of coupling is the horizontal mid point of described pair of suspension centre.
Preferably, on described suspension centre, between described drive system model and described cage, be connected by otic placode or pull bar.
According to a further aspect in the invention, provide a kind of suspension centre of building hoist to set and assemble method, the method comprises suspension centre setting step and cage number of assembling steps, set in step at suspension centre, engage common normal as center of effort's line using the lateral offset between the gear in the drive system model of building hoist and the tooth bar on guide rail bracket, the center of gravity of described drive system model is formed on horizontal first side of described center of effort line, suspension centre between described drive system model and cage is set in to horizontal second side of described center of effort line, and make to act on the gravity of the described cage on described suspension centre and load with respect to the gravity of drive system model described in the forward moment balance of described center of effort line the opposing torque with respect to described center of effort line, in cage number of assembling steps, installation connecting element on the described hoisting point position of setting, makes described cage connect described drive system model by described attaching parts.
Preferably, set while calculating described forward moment in step at suspension centre, using the rated load G3 of described building hoist as the described load acting on described suspension centre.
According to technique scheme, in the building hoist of hoisting point position establishing method of the present invention and the design of employing the method, due to tooth bar biasing, the center of gravity of gear train assembly will be difficult to drop on by the square in engagement common normal, thereby inevitably form certain moment of torsion with respect to this engagement common normal, this torsional interaction is to engaging gear, to make gear, tooth bar unbalance stress, and then cause unbalance stress and the serious wear of backgear and side wheel, thereby the suspension centre of building hoist of the present invention is as the criterion with engagement common normal while arranging, the relative opposite side of a side at the center of gravity place of drive system model arranges suspension centre, suspension centre pulling force is with respect to the moment applied moment that the deadweight of balance gear driving system brings better of this engagement common normal, thereby improve the transmission force-bearing situation of rack and pinion engagement, alleviate gear, tooth bar, backgear and the wearing and tearing of surveying the parts such as roller, make building hoist operation more steady, reliably.
Other features and advantages of the present invention are described in detail the detailed description of the invention part subsequently.
Brief description of the drawings
Accompanying drawing is to be used to provide a further understanding of the present invention, and forms a part for specification sheets, is used from explanation the present invention, but is not construed as limiting the invention with detailed description of the invention one below.In the accompanying drawings:
Fig. 1 a is a kind of building hoist according to prior art, and its middle rack biasing and otic placode are arranged symmetrically with;
Fig. 1 b is the another kind of building hoist according to prior art, and its middle rack biasing and pull bar are arranged symmetrically with;
Fig. 1 c is the another kind of building hoist according to prior art, and the mid-and pull bar of its middle rack is arranged symmetrically with;
Fig. 2 is according to a kind of tooth bar biasing in prior art and adopts the building hoist of single suspension centre form;
Fig. 3 is according to the structural representation of the building hoist of the preferred embodiment of the present invention;
Fig. 4 is the force analysis figure of the building hoist shown in Fig. 3;
Fig. 5 a is the local enlarged diagram at suspension centre place according to the building hoist of the preferred embodiment of the present invention, has wherein adopted single suspension centre form; And
Fig. 5 b and Fig. 5 a are similar, but suspension centre place has adopted two suspension centre forms.
description of reference numerals
1 cage 2 guide rail brackets
3 tooth bar 4 gears
5 retarder 6 drive motor
7 bogie 8 backgears
9 side wheel 10 otic placodes
11 pull bar 12 carrier gears
G0 suspension centre pulling force
The gravity of the gravity G2 cage of G1 drive system model
HH ' is line of centers KK ' engagement common normal vertically
O center of gravity L suspension centre
X suspension centre transverse distance a center of gravity transverse distance
2 times side wheel application forces of the upper side wheel directed force F of F1
The upper backgear directed force F 4 lower back wheel application forces of F3
The F5 directed force F 6 lower gear application forces that cog
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated.Should be understood that, detailed description of the invention described herein only, for description and interpretation the present invention, is not limited to the present invention.
In invention, in the situation that not doing contrary explanation, the noun of locality of use as " upper and lower, top, the end " normally for direction shown in the drawings or for the each parts mutual alignment relationship description word vertically, on vertical or gravity direction; The horizontal left and right directions of paper that " left and right " typically refers to, " laterally, vertical " be equally for paper laterally or vertical.
In the building hoist of prior art, drive system model generally adopts the symmetrical connection structure centered by the center of gravity of cage with being connected of cage, makes cage easily remain on level attitude in the time of operation, thereby makes side wheel stressed less.But for the gear drive structure of tooth bar biasing, adopt the suspension centre layout that this center of Fig. 1 a or Fig. 1 b connects to make the stressed biasing of drive system model, the shake producing when operation is larger, gear, backgear and side wheel serious wear.For ease of understanding, with reference to the force analysis of Fig. 4 of the present invention, if by suspension centre L along vertical line of centers HH ' two the suspension centre L that arrange or be symmetrically arranged, the gravity G2 of cage and load form an anticlockwise moment with respect to engagement common normal KK ', be arranged in horizontal the first side (left side of figure) of engagement common normal KK ' simultaneously due to the center of gravity O of drive system model, also form an anticlockwise moment with respect to engagement common normal KK ' equally.Two anticlockwise moment superpositions are to cogging shown in Fig. 4, and the directed force F 5 that certainly will cause cogging increases with respect to lower gear directed force F 6, and wearing and tearing aggravation cogs; To produce the tendency of deflection to the left with hour rack, pressure-bearing, on upper and lower backgear, causes backgear directed force F 3 and lower back wheel application force F4 to increase, and the wearing and tearing of backgear are large.In like manner, upper side wheel directed force F 1 and lower side wheel directed force F 2 also increase, and cause wandering and gnawing track.Visible, owing to being difficult to solve unbalance stress at all, there is the defect that is difficult to overcome in the design of lifting points pattern of prior art, can only mitigate wear even if improved also, and be difficult to eliminate.
In the present invention, break through original traditional design theory, for ensureing the interchangeability of the standard knot that forms guide rail bracket 2, the standard knot that adopts tooth bar 3 to setover.For ensureing the stationarity of rack and pinion engagement, to engage common normal KK ' after center of effort's line carries out stressed and torque analysis, proposition arranges suspension centre L at the relative opposite side of a side at the center of gravity O place of drive system model, suspension centre pulling force is with respect to the moment applied moment that the deadweight of balance gear driving system brings better of this engagement common normal KK ', thereby improve the transmission force-bearing situation of rack and pinion engagement, alleviate the wearing and tearing of the parts such as gear, tooth bar, backgear and survey roller, make building hoist operation more steady, reliable.
The new design philosophy of the moment balance with respect to engagement common normal KK ' based on above-mentioned, with reference to figure 3 and Fig. 4, the suspension centre that the present invention proposes a kind of building hoist is set and assemble method, and the method specifically comprises suspension centre setting step and cage number of assembling steps; Set in step at suspension centre, engage common normal KK ' as center of effort's line using the lateral offset between the gear 4 in the drive system model of building hoist and the tooth bar 3 on guide rail bracket 2, the center of gravity O of drive system model is formed on horizontal first side of center of effort's line, suspension centre L between drive system model and cage 1 is set in to horizontal second side of center of effort's line, and make to act on the gravity of the cage 1 on suspension centre L and load with respect to the gravity of the forward moment balance gear drive system of center of effort's line the opposing torque with respect to center of effort's line.Step according to this, the suspension centre L of setting is positioned at the right side of the cage 1 shown in Fig. 4, with respect to the opposite side of the center of gravity O of drive system model.In cage number of assembling steps, installation connecting element on the described suspension centre L position of above-mentioned setting, for example otic placode 10 or connecting rod 11, make cage 1 by this attaching parts connection teeth wheel drive system, thereby complete the assembling of drive system model and the cage 1 of building hoist.
On the basis of above-mentioned suspension centre setting and assemble method, the corresponding a kind of building hoist as shown in Figure 3 and Figure 4 that provides of the present invention, this building hoist comprises drive system model and cage 1, the gear 4 of drive system model be vertically arranged on tooth bar 3 engaged transmission on guide rail bracket 2, thereby pull cage 1 along guide rail bracket 2 together dipping and heaving by suspension centre L, wherein, between gear 4 and tooth bar 3, engage the vertical line of centers HH ' lateral offset of common normal KK ' with respect to guide rail bracket 2, the center of gravity O of drive system model is positioned at horizontal the first side of engagement common normal KK ', the suspension centre L of the coupling between drive system model and cage 1 is positioned at horizontal the second side that engages common normal KK '.It should be noted that, described suspension centre L is the point of connection between drive system model and cage 1, the suspension centre L of coupling refers in the situation that there is multiple suspension centre, in the time carrying out force analysis, point of connection or the stress point of the deadweight of cage 1 and load thereof the single virtual on drive system model.For example, in the time there is stressed two identical suspension centres, the suspension centre of coupling is the horizontal mid point between two suspension centres, below also will address.
Like this, referring to Fig. 4, because suspension centre L is positioned at the right side of engaging common normal KK ', suspension centre pulling force G0(is gravity G2 and the load thereof of cage) form a graphic clockwise moment (being forward moment) with respect to engagement common normal KK ', this clockwise moment can be used for the anticlockwise moment (being opposing torque) that the deadweight of the drive system model in balance left side brings, or at least play buffer action, so just alleviate the lower side wheel directed force F 2 in figure, stressed and the unstable wear of lower back wheel application force F4 and the directed force F 5 that cogs, make gear 4, the wearing and tearing of backgear 8 and survey roller 9 reduce, extend the service life of parts.Reduce the maintenance workload of elevator.Further, because vibration and the noise of elevator operation are mainly derived from drive system model, thereby building hoist of the present invention take more comfortablely, reduced maintenance workload.
For reaching better moment balance, i.e. forward moment balance opposing torque better, and for ease of assembling, in the time calculating forward moment, using the rated load of building hoist as the load acting on suspension centre L, i.e. G0=G2+G3.Now, with reference to Fig. 4, for reaching moment balance, should make:
G0*x＝G1*a
Therefore, the suspension centre L of coupling along horizontal the second lateral deviation from the transverse distance x of engagement common normal KK ' is:
x＝G1*a/(G2+G3)
Wherein, a is center of gravity O and the transverse distance engaging between common normal KK ', and G1 is the gravity that acts on the drive system model on the center of gravity O of drive system model, and G2 is the gravity of cage 1, and the G3 rated load that is building hoist.
In the present embodiment shown in Fig. 3, drive system model generally includes bogie 7 and is arranged on gear 4, retarder 5 and the drive motor 6 on this bogie 7, drive motor 6 is by retarder 5 driven wheels 4, and gear 4 and tooth bar 3 engaged transmission, pull cage 1 oscilaltion by suspension centre L.Wherein, above-mentioned G1 should comprise bogie 7, gear 4, retarder 5 and drive motor 6 gravity make a concerted effort, suspension centre L is formed on particularly on the underframe of bogie 7 on drive system model, suspension centre L is formed on particularly the top of cage 1 on cage 1.In addition, drive system model also comprises that vertical interval, edge is arranged in multiple backgears 8 and the multiple side wheel 9 on bogie 7, backgear 8 and gear 4 are respectively in the both sides of tooth bar 3, and multiple side wheels 9 are separately positioned on the both sides of bogie 7 and slide along the side direction slide rail of guide rail bracket 2.Backgear 8 is arranged on bogie 7 and can spinning, when installation, certain horizontal assembly clearance is set between backgear 8 and tooth bar 3, and in the time that tooth bar 3 produces inclination, backgear 8 plays support limit effect to tooth bar 3.Referring to Fig. 3, in the time having said structure composition, the vertical line of centers HH ' of guide rail bracket 2 is preferably substantially and overlaps with the vertical line of centers of cage 1, and is all positioned at described horizontal the first side of engagement common normal KK '.
In addition, between drive system model and cage 1, can form the single suspension centre shown in Fig. 3 or Fig. 5 a or form two suspension centres as shown in Figure 5 b.When forming the two suspension centres shown in Fig. 5 b, in the time carrying out force analysis, the lateral mid-point point of two suspension centres can be considered as the suspension centre L of coupling simply.Therefore, in the time forming two suspension centre, suspension centre L position is no longer confined to all be positioned at described horizontal the second side of engagement common normal KK ', only needs the suspension centre of the coupling of two suspension centres to be positioned at horizontal the second side.
In the time adopting single suspension centre, as shown in Figure 3, although setover with respect to cage 1, but because cage 1 slides along the side direction slide rail of guide rail bracket 2 by its side wheel, avoid the swing of cage 1 with respect to single suspension centre L, can realize comparatively pulsation-free lifting moving, little to comfort degree.Certainly, adopt two suspension centres as shown in Figure 5 b, can further improve the running stability of elevator.In addition, on suspension centre L, between drive system model and cage 1, can be connected or adopt the pull bar 11 shown in Fig. 1 b to connect by the otic placode 10 as shown in Fig. 1 a, Fig. 5 a or Fig. 5 b, can select easily according to performance requirement, assembly precision etc.
Below describe by reference to the accompanying drawings the preferred embodiment of the present invention in detail; but; the present invention is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characterictic described in above-mentioned detailed description of the invention, in reconcilable situation, can combine by any suitable mode, for fear of unnecessary repetition, the present invention is to the explanation no longer separately of various possible array modes.
In addition, also can carry out combination in any between various embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (10)
1. a building hoist, comprise drive system model and cage (1), the gear (4) of described drive system model be vertically arranged on tooth bar (3) engaged transmission on guide rail bracket (2), thereby pull described cage (1) along described guide rail bracket (2) dipping and heaving together by suspension centre (L), wherein, between described gear (4) and described tooth bar (3), engage common normal (KK ') with respect to the vertical line of centers of described guide rail bracket (2) (HH ') lateral offset, the center of gravity (O) of described drive system model is positioned at horizontal first side of described engagement common normal (KK '), the described suspension centre (L) of the coupling between described drive system model and described cage (1) is positioned at described horizontal the second side that engages common normal (KK ').
2. building hoist according to claim 1, wherein, along described horizontal the second lateral deviation from described engagement common normal, the transverse distance x of (KK ') is the described suspension centre (L) of coupling:
x＝G1*a/(G2+G3)
Wherein, a is described center of gravity (O) and the described transverse distance engaging between common normal (KK '), G1 is the gravity of the described drive system model in the center of gravity (O) that acts on described drive system model, G2 is the gravity of described cage (1), and the G3 rated load that is described building hoist.
3. building hoist according to claim 2, wherein, described drive system model comprises bogie (7) and is arranged on described gear (4), retarder (5) and the drive motor (6) on this bogie (7), described G1 comprise described bogie (7), gear (4), retarder (5) and drive motor (6) gravity make a concerted effort, described suspension centre (L) is formed on the underframe of described bogie (7).
4. building hoist according to claim 3, wherein, described drive system model also comprises that vertical interval, edge is arranged in multiple backgears (8) and the multiple side wheel (9) on described bogie (7), described backgear (8) and described gear (4) are respectively in the both sides of described tooth bar (3), and multiple described side wheels (9) are separately positioned on the both sides of described bogie (7) and slide along the side direction slide rail of described guide rail bracket (2).
5. building hoist according to claim 1, wherein, the vertical line of centers of described guide rail bracket (2) (HH ') overlaps with the vertical line of centers of described cage (1), and is all positioned at described horizontal first side of described engagement common normal (KK ').
6. building hoist according to claim 1, wherein, forms single suspension centre between described drive system model and described cage (1).
7. building hoist according to claim 1, wherein, is formed with two suspension centres between described drive system model and described cage (1), the described suspension centre (L) of coupling is the horizontal mid point of described pair of suspension centre.
8. building hoist according to claim 1, wherein, upper at described suspension centre (L), between described drive system model and described cage (1), be connected by otic placode (10) or pull bar (11).
9. the suspension centre of building hoist is set and an assemble method, and wherein, the method comprises:
Suspension centre is set step: engage common normal (KK ') as center of effort's line using the lateral offset between the gear (4) in the drive system model of building hoist and the tooth bar (3) on guide rail bracket (2), the center of gravity (O) of described drive system model is formed on horizontal first side of described center of effort line, suspension centre (L) between described drive system model and cage (1) is set in to horizontal second side of described center of effort line, and make to act on the gravity of the described cage (1) on described suspension centre (L) and load with respect to the gravity of drive system model described in the forward moment balance of described center of effort line the opposing torque with respect to described center of effort line, and
Cage number of assembling steps: installation connecting element on described suspension centre (L) position of setting, makes described cage (1) connect described drive system model by described attaching parts.
10. the suspension centre of building hoist according to claim 9 is set and assemble method, wherein, sets while calculating described forward moment in step at suspension centre, using the rated load G3 of described building hoist as the described load acting on described suspension centre (L).
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104803257A (en) * | 2015-03-25 | 2015-07-29 | 南宁市宏涛机械设备有限责任公司 | Lifter having anti-falling function |
| CN109051785A (en) * | 2018-09-12 | 2018-12-21 | 湖州海控印刷设备科技有限公司 | A kind of quick paper feeder |
| CN113056432A (en) * | 2018-11-09 | 2021-06-29 | 株式会社日立制作所 | Elevator device for construction |
| CN118025927A (en) * | 2024-04-11 | 2024-05-14 | 中杰建兆(江苏)智能电梯有限公司 | Construction lifter with unbalanced load detection function and unbalanced load detection method thereof |
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| US20020170784A1 (en) * | 2001-05-21 | 2002-11-21 | Benoit Duplessis | Elevating platform assembly |
| EP1889806A1 (en) * | 2005-05-19 | 2008-02-20 | Tecnologia en Sistemas de Elevacion y Transporte | Load hoist for confined spaces |
| CN201882837U (en) * | 2009-05-19 | 2011-06-29 | 齐麟 | Transmission device of load sharing type rack and pinion construction lifter |
| CN101693495A (en) * | 2009-11-04 | 2010-04-14 | 杨文德 | Construction hoist |
| CN202007071U (en) * | 2011-04-19 | 2011-10-12 | 周沛凝 | Connection structure for suspension cage and driving mechanism in building hoist |
| CN102515002A (en) * | 2011-12-20 | 2012-06-27 | 启东大同电机有限公司 | Flexibility-adjustable transmission mechanism of construction lifter |
| CN203033614U (en) * | 2012-11-16 | 2013-07-03 | 广西建工集团建筑机械制造有限责任公司 | Separated combined type construction lifter transmission device driven by multiple wheels |
| CN103183271A (en) * | 2013-03-13 | 2013-07-03 | 北京博邦重工机械有限公司 | Construction hoist |
| CN203255838U (en) * | 2013-05-23 | 2013-10-30 | 广西建工集团建筑机械制造有限责任公司 | Single-lifting-point construction lift |
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| CN104803257A (en) * | 2015-03-25 | 2015-07-29 | 南宁市宏涛机械设备有限责任公司 | Lifter having anti-falling function |
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| CN113056432A (en) * | 2018-11-09 | 2021-06-29 | 株式会社日立制作所 | Elevator device for construction |
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| CN118025927A (en) * | 2024-04-11 | 2024-05-14 | 中杰建兆(江苏)智能电梯有限公司 | Construction lifter with unbalanced load detection function and unbalanced load detection method thereof |
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