CN2679131Y

CN2679131Y - Flexible rack type lifter

Info

Publication number: CN2679131Y
Application number: CN 200420020574
Authority: CN
Inventors: 丰国勋
Original assignee: Individual
Current assignee: Zhejiang Dafeng Industry Co Ltd
Priority date: 2004-02-26
Filing date: 2004-02-26
Publication date: 2005-02-16
Anticipated expiration: 2014-02-26

Abstract

The utility model relates to a flexible rack type lifting device, which comprises a fixed support fixedly connected to the ground, a driving box, a lifting support and a lifting device used to jack the lifting support. The lifting device extends out from the inner part of the fixed support, the lifting device comprises a rigid chain and a sliding rail, a plurality of sections of gear racks are hinged to form the rigid chain, and the rigid chain is fixedly connected to the lifting support. A gear matching with the gear racks is installed at the upper end of the fixed support, and the gear is driven by a drive unit in the driving box. A guide rail is provided on the fixed support, the upper part of the guide rail is in the vertical direction, the upper part of the guide rail is provided with a cambered extension to the horizontal position, and a pulley matching with the guide rail is provided on each section of gear rack. The lifting device of the rigid chain formed by a plurality of sections of hinged gear racks and adopted by the utility model causes the deepness of a foundation ditch not to be restricted by a lifting stroke; when the foundation ditch is more shallow, a larger lifting stroke can be obtained, in order to reduce the cost needed to deepen the foundation ditch.

Description

Flexible Rack Lifting Device

(1) technical field

The utility model relates to a kind of jacking system.

(2) background technology

The use of jacking system in all trades and professions is commonplace, as the bay-lift in heavy industry, the storage industry, the bay-lift in the stage, lifting orchestra etc.Jacking system commonly used has: steel wire rope type, chain-type, fluid pressure type, rack-and-pinion, spiral etc.Make comparisons with respect to various existing jacking systems:

1, steel wire rope type jacking system, lifting travel can be very big, and noise is little, and expense is lower, and the shortcoming of existence is: easily produce during heavy duty, need blocking device is installed, the table top stationarity is poor, need add guiding mechanism; The degree of depth of foundation ditch is deep, is that lifting travel adds 2～3 meters; Generally be applicable to the accuracy requirement lower;

2, hydraulic lifting device, stroke is shorter, and noise is little, and the shortcoming of existence is: easily produce during heavy duty, need blocking device is installed, the table top stationarity is poor, need add guiding mechanism; The degree of depth of foundation ditch needs the two-fold lifting travel approximately; Expense is higher; It is applicable to the accuracy requirement lower;

3, rack-and-pinion jacking system, stroke is medium, and noise is less, and the table top stationarity is good, accurate positioning; The shortcoming that exists is: the degree of depth of foundation ditch is deep, and expense is medium, and it is applicable to that accuracy requirement generally locates;

4, spiral jacking system, stroke is shorter, and the table top stationarity is good, accurate positioning; Can be used in the accuracy requirement higher position, the shortcoming of existence is: efficient is very low; Speed can produce big noise when very fast, and the degree of depth of foundation ditch is lifting travel+2～3m, and expense is higher.

By above comparison, various jacking systems cut both ways, and select different jacking systems as the case may be for use.But when foundation ditch was more shallow, lifting travel required when big, and the location is again accurately the time, more than several lifting forms all can not realize.The deep basal pit so often have in order to guarantee stroke add when foundation ditch can not be deepened, can only reduce lifting travel.

(3) summary of the invention

For the big more dark more deficiency of foundation ditch that promptly requires of lifting travel that overcomes jacking system in the prior art, the utility model provides a kind of gentle formula rack-and-pinion jacking system, make lifting travel not be subjected to the restriction of the degree of depth of foundation ditch, make when foundation ditch is more shallow, also can reach bigger lifting travel, add the required expense of deep basal pit thereby reduce.

The technical scheme that its technical matters that solves the utility model adopts is:

A kind of Flexible Rack Lifting Device, comprise the lifting mechanism that is fixed in ground-surface fixed support, driving box, lifting support, is used for the described lifting support of jacking, described lifting mechanism is installed in the described fixed support, described lifting mechanism comprises that described rigid chain and described lifting support are affixed by the hinged rigid chain that forms of more piece tooth bar, guide rail; Described support bracket fastened upper end is equipped with the gear that cooperates with described tooth bar, and described gear is driven by the actuating device in the driving box; Described fixed support is provided with a guide rail, the top of guide rail in vertical direction, and the extension that is provided with arc all is provided with the pulley that cooperates with described guide rail to level attitude on described every joint tooth bar.

Described driving box is installed on the described fixed support, and described driving box is equipped with drive motor, and the rotating shaft of described motor is connected with sprocket wheel by chain, described sprocket wheel and gear matched.

Be separately installed with guiding mechanism around the described lifting support, described guiding mechanism is guided way and sliding sleeve, is provided with the sliding sleeve that cooperates with described guided way around the lifting support.

The beneficial effect of Flexible Rack Lifting Device described in the utility model mainly shows: when tooth bar descends, lower gear rack can change horizontal operation into, and reduced vertical desired height, lifting travel is not subjected to the restriction of the degree of depth of foundation ditch like this, when foundation ditch is more shallow, also can reach big lifting travel, add the required expense of deep basal pit, dwindle the volume of equipment thereby reduce.

(4) description of drawings

Fig. 1 is the utility model Flexible Rack Lifting Device constructional drawing.

Fig. 2 is the connection diagram of lifting table.

(5) specific embodiment

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

As shown in Figure 1, Flexible Rack Lifting Device comprises driving box 1, lifting support 2, be fixed in ground-surface fixed support 3, guide rail 6, the more piece tooth bar 5 hinged rigid chains that form, rigid chain passes from fixed support inside, the top of rigid chain and lifting support 2 are affixed, the upper end of fixed support 3 is equipped with the gear 7 that cooperates with tooth bar 5, gear 7 is driven by the drive motor of driving box 1, drive motor drives sprocket wheel 9 by chain 8, sprocket wheel 9 driven gears 7 rotate, fixed support 3 is provided with a guide rail 6, the top of guide rail in vertical direction, and the extension that is provided with arc all is provided with the pulley 4 that cooperates with guide rail 6 to level attitude on every joint tooth bar.

With reference to Fig. 2, a large-scale lifting table 13 is made up of three Flexible Rack Lifting Devices, drive motor 10, distribution box 11, guiding mechanism 12, sprocket wheel in three Flexible Rack Lifting Devices is driven behind distribution box 11 synchronously by drive motor 10, guiding mechanism 12 is installed around the lifting table 13, guiding mechanism 12 is guided way and sliding sleeve, is provided with the sliding sleeve that cooperates with described guided way around the lifting table 13.

Claims

1, a kind of Flexible Rack Lifting Device comprises the lifting mechanism that is fixed in ground-surface fixed support, driving box, lifting support, is used for the described lifting support of jacking, and described lifting mechanism is installed in the described fixed support, it is characterized in that:

Described lifting mechanism comprises that described rigid chain and described lifting support are affixed by the hinged rigid chain that forms of more piece tooth bar, guide rail;

Described support bracket fastened upper end is equipped with the gear that cooperates with described tooth bar, and described gear is driven by the actuating device in the driving box;

Described fixed support is provided with a guide rail, the top of guide rail in vertical direction, and the extension that is provided with arc all is provided with the pulley that cooperates with described guide rail to level attitude on described every joint tooth bar.

2, Flexible Rack Lifting Device as claimed in claim 1, it is characterized in that: described driving box is installed on the described fixed support, described driving box is equipped with drive motor, and the rotating shaft of described motor is connected with sprocket wheel by chain, described sprocket wheel and gear matched.

3, as claim 1 or 2 described Flexible Rack Lifting Devices, it is characterized in that: be separately installed with guiding mechanism around the described lifting support, described guiding mechanism is guided way and sliding sleeve, is provided with the sliding sleeve that cooperates with described guided way around the lifting support.