CN203255838U - Single-lifting-point construction lift - Google Patents

Single-lifting-point construction lift Download PDF

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Publication number
CN203255838U
CN203255838U CN 201320286741 CN201320286741U CN203255838U CN 203255838 U CN203255838 U CN 203255838U CN 201320286741 CN201320286741 CN 201320286741 CN 201320286741 U CN201320286741 U CN 201320286741U CN 203255838 U CN203255838 U CN 203255838U
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CN
China
Prior art keywords
gear
standard knot
lifting
suspension centre
frame
Prior art date
Application number
CN 201320286741
Other languages
Chinese (zh)
Inventor
杨健
尹义民
何懿翔
林永
邱方亮
姜渭
黄家森
Original Assignee
广西建工集团建筑机械制造有限责任公司
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Priority to CN 201320286741 priority Critical patent/CN203255838U/en
Application granted granted Critical
Publication of CN203255838U publication Critical patent/CN203255838U/en

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Abstract

The utility model provides a single-lifting-point construction lift. A transmission gear comprises a power part, a supporting frame, a gear rack meshing system and a guide pulley system, wherein a transmission plate of the power part is fastened to a gear frame; the gear frame is connected with a standard knot of the lift; a motor is connected with a reductor; the reductor drives a gear rack system; the guide pulley system drives the lift to move up and down under the cooperation of the standard knot as a guide rail. The utility model is characterized in that only a single lifting point is arranged on the gear frame of the transmission gear to be connected with a cage; the central line of the single lifting point, the central line of an intermediate gear, and the central line of the standard knot guide rail coincide. Since the lift only has one single lifting point, no matter whether each load in the cage is eccentric, the single lifting point can only generate one downward acting force under the acting force of the load of the cage, thereby improving the condition of shorter service life due to overhigh eccentric moment of the load since the common double-lifting-point construction lift transmission gear with eccentric loads are subjected to the coaction of the two different moments.

Description

A kind of building hoist of single suspension centre

Technical field

The utility model relates to building hoist, and particularly a kind of building hoist of single suspension centre, belong to building handling machinery technical field.

Background technology

Building hoist is again construction elevator for building, is the manned cargo-carrying construction machinery and equipment that often uses in building, is mainly used in the construction of the buildings such as high-rise building, bridge, chimney.The construction elevator cage running part can be the inhead type transmission, it can be also built-in transmission, the driving device of existing driving upper set construction elevator generally is the motor drives reductor, the engagement of reductor driving gear wheel and rack, under the cooperation of guidance system, drive the elevator up-and-down movement.The form that inhead type driving device and the connection of cage all adopt two suspension centres to be connected, suspension centre is distributed in the both sides of cage, when the placement of the load-carrying article in cage is lack of standardization, easily produce the situation of load over centre, at this moment acting on two load on suspension centre can not wait, different loads on two suspension centres produces different moments of flexure to driving device, and two superimposed meetings of moment of flexure make the force-bearing situation of driving device become more abominable, thereby reduces the service life of driving device.

The utility model content

For the driving upper set construction elevator that improves existing pair of suspension centre easily makes the abominable phenomenon of driving device force-bearing situation because of the cage load over centre, we have proposed a kind of driving device and the technical scheme that adopts single suspension centre connection being connected of cage, because single suspension centre is unique to the point of action of driving device, can not be subject to the impact of cage load over centre, as long as rationally set the position of single suspension centre, just can make driving device be in theory minimum strained condition, effectively improve the force-bearing situation of driving device.

The concrete technical scheme that the utility model is taked is as follows:

A kind of building hoist of single suspension centre, its driving device comprise power pack section, bracing frame, rack and pinion engagement system and guide pulley system.Wherein power pack section comprises electrical motor and reductor, bracing frame comprises driver plate and gear frame, driver plate is fastened on gear frame, gear frame is connected with the standard knot of elevator, electrical motor connects reductor, reductor driven gear rack system under the cooperation of guide pulley system take standard knot as guide rail, drives the elevator up-and-down movement.It is characterized in that driving device is single suspension centre to be set be connected with cage on gear frame, single suspension centre line of centers overlaps with the carrier gear line of centres and standard knot center line of guide rail three lines.

The beneficial effects of the utility model are:

Owing to adopting single suspension centre to be connected between driving device and cage, no matter whether the load in cage is eccentric respectively, single suspension centre can only produce a downward application force under the application force of cage load, cause the excessive situation that reduces service life of load over centre moment thereby improved common double suspension centre transmission device of construction elevator because load over centre is subjected to two different moment combineds action.In addition, driven wheel is indirect and tooth bar engagement by carrier gear, and carrier gear has disperseed stressed, has effectively improved the service conditions of driving device, reduces Contact Stress of Gear, extends the service life of rack and pinion engagement system, thereby improves its reliability.Overlap with the carrier gear line of centres and standard knot center line of guide rail three lines by setting single suspension centre line of centers, can be so that driving device be in minimum strained condition in theory.

Description of drawings

Fig. 1 is common double suspension centre building hoist overall structure schematic diagram;

Fig. 2 is overall structure schematic diagram of the present utility model;

Fig. 3 is the schematic top plan view of Fig. 2;

Fig. 4 is Fig. 2 Plays joint line of centers, the carrier gear line of centres and single suspension centre line of centers diagram;

Fig. 5 is the force analysis figure at partial view A place in Fig. 4.

In figure: 1-gear frame, 2-tooth bar, 3-carrier gear, the 4-driven wheel, 5-electrical motor, 6-reductor, 7-plum blossom plunging joint, the 8-suspension centre, 9-guide wheel, 10-standard knot, the 11-driver plate, 12-standard knot center line of guide rail, the 13-carrier gear line of centres, the single suspension centre line of centers of 14-.

The specific embodiment

Below in conjunction with accompanying drawing, the utility model is described further.

Fig. 1 is the schematic diagram of common double suspension centre building hoist, as shown in Figure 1, two suspension centres of common double suspension centre building hoist generally are positioned at the both sides of gear frame bottom, the mode that the rack and pinion engagement system of elevator generally adopts driven wheel directly to mesh with tooth bar, when load over centre, different loads on two suspension centres produces different moments of flexure to driving device, and two superimposed meetings of moment of flexure make the force-bearing situation of driving device become more abominable.

And the building hoist of single suspension centre provided by the utility model is as shown in Fig. 2-3, and its driving device comprises power pack section, bracing frame, rack and pinion engagement system and guide pulley system.Wherein power pack section comprises electrical motor 5 and the reductor 6 of self band brake, and electrical motor 5 is installed on reductor 6, and the output shaft of electrical motor 5 is connected to the input shaft of reductor 6 by plum blossom plunging joint 7, make it be in coupling transmitting torque state.Bracing frame comprises driver plate 11, gear frame 1, and driver plate 11 is fastened on gear frame 1, and guide wheel 9 also is arranged on gear frame 1, and the below of gear frame 1 also is provided with single suspension centre 8.

The rack and pinion engagement system comprises driven wheel 4; Carrier gear 3; Tooth bar 2; Carrier gear 3 is fastened on driver plate 11; Driven wheel 4 is connected on speed reducer output shaft; Driven wheel 4 is not direct and tooth bar 2 monodentates engagements; Arrange but form an equicrural triangle with two carrier gears 3; Driven wheel 4 and two carrier gear 3 engagements; Two carrier gears 3 mesh with the tooth bar 2 that is fastened on standard knot respectively; Being equivalent to driven wheel 4 meshes with the tooth bar 2 that is fastened on standard knot 10 indirectly by carrier gear 3; Reach the purpose that drives the elevator up-and-down movement.

In order to make driving device be in theory minimum strained condition, we are arranged on single suspension centre 8 center of gear frame 1 bottom, single suspension centre line of centers 14, the carrier gear line of centres 13 and standard knot center line of guide rail 12 3 lines are overlapped, as shown in Figure 4.Because the carrier gear line of centres 13 overlaps with single suspension centre line of centers 14, the moment of load F to carrier gear 3 and tooth bar 2 point of engagement (D is the reference diameter of carrier gear) is theoretic minimum value.Its concrete analytic process is as follows:

As shown in Figure 5, when single suspension centre building hoist works under the rated load operating mode, load power F1 concentrates on single suspension centre 8, the moment of torsion of electrical motor 5 output by two carrier gears 3 and tooth bar 2 engagements, moves along with the rotating of electrical motor 5 drives building hoist after reductor 6 and driven wheel 4 up and down.Point of engagement on the tooth bar graduation line are the point of action of the arm of force, the moment of flexure that load produces (D is the carrier gear reference diameter, and h is the distance that single suspension centre line of centers 14 arrives the carrier gear line of centres 13, and is lower same).And carrier gear 3 is for the moment of flexure of point of engagement (α is the angle of F2 and tooth bar graduation line), driving that realizing ideal, F2 〉=F1, M2 ≈ M1, unique variable h in the situation that be tending towards or equal 0 realizing M2 ≈ M1.In fact the carrier gear line of centres 13 overlaps with single suspension centre line of centers 14 is exactly zero for being changed to variable h in following formula, thus the negative interaction that the extra moment of flexure of having brought when actv. has solved load over centre produces.When driving device moves up and down along the standard knot guide rail, single suspension centre line of centers 14 and standard knot center line of guide rail 12 overlap, make capable F1 not produce extra moment of flexure to standard knot line of centers 12, actv. has improved guide wheel 9 wandering and gnawing track phenomenons in the actuator movement process, has realized steady transmission.

Claims (1)

1. the building hoist of a single suspension centre; Its driving device comprises power pack section; Bracing frame; Rack and pinion engagement system and guide pulley system; Wherein power pack section comprises electrical motor (5) and reductor (6); Bracing frame comprises driver plate (11) and gear frame (1); Driver plate (11) is fastened on gear frame (1); Gear frame (1) is connected with the standard knot (10) of elevator; Electrical motor (5) connects reductor (6); Reductor (6) driven gear rack system; Guide pulley system take standard knot (10) under the cooperation of guide rail; Drive the elevator up-and-down movement; It is characterized in that: driving device is single suspension centre (8) to be set be connected with cage on gear frame; Single suspension centre line of centers (14) overlaps with the carrier gear line of centres (13) and standard knot center line of guide rail (12) three lines.
CN 201320286741 2013-05-23 2013-05-23 Single-lifting-point construction lift CN203255838U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320286741 CN203255838U (en) 2013-05-23 2013-05-23 Single-lifting-point construction lift

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320286741 CN203255838U (en) 2013-05-23 2013-05-23 Single-lifting-point construction lift

Publications (1)

Publication Number Publication Date
CN203255838U true CN203255838U (en) 2013-10-30

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201320286741 CN203255838U (en) 2013-05-23 2013-05-23 Single-lifting-point construction lift

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Country Link
CN (1) CN203255838U (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103879858A (en) * 2014-03-17 2014-06-25 中联重科股份有限公司 Building hoist and method for lifting point setting and assembly thereof
CN105460850A (en) * 2016-01-12 2016-04-06 宁波天弘电力器具有限公司 Safe lifting appliance
CN105460743A (en) * 2016-01-12 2016-04-06 宁波天弘电力器具有限公司 Climbing robot
CN105502132A (en) * 2016-01-12 2016-04-20 宁波天弘电力器具有限公司 Lifting equipment with falling preventing function
CN105539625A (en) * 2016-01-12 2016-05-04 宁波天弘电力器具有限公司 Climbing robot based on guide rail
CN106986255A (en) * 2017-05-08 2017-07-28 中国建筑科学研究院建筑机械化研究分院 A kind of building hoist modular drive system

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103879858A (en) * 2014-03-17 2014-06-25 中联重科股份有限公司 Building hoist and method for lifting point setting and assembly thereof
CN103879858B (en) * 2014-03-17 2016-02-17 中联重科股份有限公司 Building hoist and suspension centre thereof set and assemble method
CN105460850A (en) * 2016-01-12 2016-04-06 宁波天弘电力器具有限公司 Safe lifting appliance
CN105460743A (en) * 2016-01-12 2016-04-06 宁波天弘电力器具有限公司 Climbing robot
CN105502132A (en) * 2016-01-12 2016-04-20 宁波天弘电力器具有限公司 Lifting equipment with falling preventing function
CN105539625A (en) * 2016-01-12 2016-05-04 宁波天弘电力器具有限公司 Climbing robot based on guide rail
CN105502132B (en) * 2016-01-12 2018-06-19 宁波天弘电力器具有限公司 Lifting device with anti-drop function
CN105460850B (en) * 2016-01-12 2018-10-19 宁波天弘电力器具有限公司 Safe lifting device
CN105539625B (en) * 2016-01-12 2019-03-08 宁波天弘电力器具有限公司 Climbing robot based on guide rail
CN106986255A (en) * 2017-05-08 2017-07-28 中国建筑科学研究院建筑机械化研究分院 A kind of building hoist modular drive system
CN106986255B (en) * 2017-05-08 2019-04-05 中国建筑科学研究院建筑机械化研究分院 A kind of building hoist modular drive system

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