CN102733752A

CN102733752A - Movable safety ladder

Info

Publication number: CN102733752A
Application number: CN2012102090465A
Authority: CN
Inventors: 顾大强; 丁硕; 林嘉颖; 勾哲; 郑元态
Original assignee: Zhejiang University ZJU
Current assignee: Zhejiang University ZJU
Priority date: 2012-06-21
Filing date: 2012-06-21
Publication date: 2012-10-17
Anticipated expiration: 2032-06-21
Also published as: CN102733752B

Abstract

A movable safety ladder comprises a rack which is a foldable herringbone ladder. The front and back sides of the bottom of the rack are respectively provided with a driving shaft and a driven shaft. Two ends of the driving shaft and the driven shaft are respectively equipped with road wheels. The invention is characterized in that movable safety ladder comprises a belt driver and a hand wheel control mechanism; the belt driver comprises a large belt wheel installed at the upper end of the rack and a small belt wheel installed at the bottom of the rack; the small belt wheel is installed on one end of the driving shaft; the large belt wheel is connected with the small belt wheel through a driving belt; the hand wheel control mechanism comprises a hand wheel shaft which is positioned at the upper end of the rack; the large belt wheel is installed on one end of the hand wheel shaft; and the other end of the hand wheel shaft is provided with a hand wheel. The invention provides a noise-free movable safety ladder which has force and motion velocity which can be flexibly changed and good stability.

Description

Removable emergency staircase

Technical field

The present invention relates to emergency staircase, especially a kind ofly can on ladder, control the double ladder that ladder moves.

Background technology

In the daily life, the double ladder instrument that is absolutely necessary is at suspended item, plastering wall, cleaning window, change light fixture etc. and need the occasion of high-rise working that needs are all arranged.And the double ladder that occurs does not now possess the function that can let subscriber station on ladder, conveniently change the ladder position.We have invented removable emergency staircase, are to be used to realize that the user makes things convenient for ramp, and efficient, safety is carried out the removable emergency staircase of high-rise working.Through investigation for a long time; We were 201110289422.1 in the patent No. once; Name is called " movably ladder " and the patent No. is 03114041.6; Name is called in " in the use movably ladder " two patents, has proposed double ladder and has cooperated wheel to realize moving the method that moves ladder with gear, chain.But,, find that " movably ladder " needs outside motive force could realize moving of ladder through long-term experimental study; In addition, find that the method for application gear, chain in " transportable ladder in the use " cannot be regulated application person's the power and the speed of service of ladder, have stuck situation in the motion and noise is arranged.

Summary of the invention

For can not changing flexibly of overcoming that existing movably ladder exists make firmly with movement velocity, less stable, exist the deficiency of noise, the present invention provide a kind of can change flexibly make exert oneself and movement velocity, have good stability, muting removable emergency staircase.

The technical solution adopted for the present invention to solve the technical problems is:

A kind of removable emergency staircase; Comprise support; Said support is folding double ladder, and side is installed driving shaft and driven shaft respectively before and after the said frame bottom, and road wheel is installed at the two ends of said driving shaft and driven shaft respectively; It is characterized in that: said removable emergency staircase comprises belt driver and handwheel operating mechanism; Said belt driver comprises the big belt wheel and the small pulley that is installed in frame bottom of rack-mount end, and said small pulley is installed on the end of said driving shaft, and said big belt wheel is connected through driving-belt with small pulley; Said handwheel operating mechanism comprises hand wheel shaft, and said hand wheel shaft is positioned at the support upper end, and said big belt wheel is installed in an end of hand wheel shaft, and the other end of said hand wheel shaft is installed handwheel.

Further; The other end of said driving shaft is installed brake gear; Said brake gear comprises brake disc, brake shell, steel wire and steel wire cover, brake controll block and block, and said brake controll block is the optical axis bearing support, is enclosed within on the hand wheel shaft; Said block is through being bolted on the punching aluminium sheet, and said steel wire and steel wire cover are clamped in the said optical axis bearing support slit fixing; Said brake shell is through being bolted to said self-aligning ball bearing seat, and said brake rubber block is concentric with said brake disc, and said brake linkage is connected with said fixation with steel wire.

Preferred a kind of scheme: said removable emergency staircase also comprises enclasp device, and said enclasp device comprises that piece is embraced at a top and piece is embraced in four bottoms, and the last end floor beam that piece is installed in support is embraced at the top, and embrace on four footing that piece is installed in support four bottoms.

Further again, said removable emergency staircase also comprises a punching aluminium sheet, two optical axis bearing supports, four self-aligning ball bearing bearing supports and four self-aligning ball bearings; Said top is embraced piece and is clamped and installed in a top of the trellis circular arc, and said punching aluminium sheet is fixed on the top through bolt and nut and embraces on the piece, and said two optical axis bearing supports are fixed on the aluminium sheet through screw-nut, and said hand wheel shaft passes through the optical axis bearing fixing on aluminium sheet; Said self-aligning ball bearing seat is embraced piece through being bolted to the bottom, and said self-aligning ball bearing is fixed on the said driving shaft of said self-aligning ball bearing seat supports, driven shaft.

Further, said road wheel comprises rubber wheel and swelling cover, and said rubber wheel is fixed on said driving shaft, driven shaft through said swelling cover, and said small pulley is fixed on the driving shaft through interference fit.

Said big belt wheel and said small pulley are respectively the belt wheel group.

As preferred another kind of scheme: said belt driver has two covers; Two side difference mounting strap transmission devices about said support; Said driving shaft separately becomes two connecting axles; Left and right small pulley is fixed on described two connecting axles through interference fit, and said left and right big belt wheel is fixed on the hand wheel shaft through interference fit.

Beneficial effect of the present invention mainly shows: 1, be implemented in the function that moves ladder on the ladder, the convenient application significantly increased work efficiency; Stability when 2, check mechanism keeps ladder static is used safer; 3, use cleaning, do not have noise, the structure compact makes things convenient for stored collapsed;

Description of drawings

Fig. 1 is the overall structure figure of removable emergency staircase.

Fig. 2 is removable emergency staircase top junction composition.

Fig. 3 is removable emergency staircase front-wheel driving shaft structure chart.

Fig. 4 is removable emergency staircase trailing wheel driven shaft structure chart.

Fig. 5 is a belt wheel group structure chart.

Fig. 6 is a swelling noose composition.

Fig. 7 is a brake part detailed drawing.

The specific embodiment

Below in conjunction with accompanying drawing the present invention is further specified.

With reference to Fig. 1-Fig. 7; A kind of removable emergency staircase; Comprise support, belt driver, brake gear, hold fastening devices tightly, other devices; Said support is folding level Four double ladder; Said belt driver is installed in the left surface of support and arranges, said belt driver comprises that big belt wheel 10, small pulley 14 and common v are with 11, and said brake gear is installed on the driving shaft 17 of said support footing; Said brake gear comprises brake disc 18, brake shell 19, steel wire 6 and steel wire cover, brake controll block 7 and block 5; Said enclasp device is installed on the last end floor beam and four footing of support, and said enclasp device comprises that piece 3 is embraced at a top and piece 12 is embraced in four bottoms, and said other devices comprise a handwheel 2, hand wheel shaft 9, driving shaft 17, driven shaft 21, four rubber wheels 16, four 20, punchings of swelling cover aluminium sheets 4, two optical axis bearing supports 8, four self-aligning ball bearing bearing supports 13, four self-aligning ball bearings 15 and some bolt and nuts;

Said top is embraced piece 3 and is clamped and installed in a top of the trellis circular arc; Said punching aluminium sheet 4 is fixed on the top through bolt and nut and embraces on the piece 3, regulates said bolt and nut and can change the relative position that piece 3 is embraced at said punching aluminium sheet 4 and said top, adjusts the center to center distance of said band transmission; Said two optical axis bearing supports 8 are fixed on the punching aluminium sheet 4 through screw-nut; Said hand wheel shaft 9 is fixed on the punching aluminium sheet 4 through said optical axis bearing support 8, and said handwheel 2 is fixed on the hand wheel shaft 9 through radial bolts, and said big belt wheel 10 is fixed on the hand wheel shaft 9 through interference fit; Said brake controll block 7 is the optical axis bearing support; Be enclosed within on the hand wheel shaft 9, said block 5 is through being bolted on the punching aluminium sheet 4, and said steel wire 6 and steel wire cover are clamped in said brake controll block 7 slits fixing; Said bottom is embraced piece 12 and is clamped and installed in said support 1 bottom four pin; Said self-aligning ball bearing seat 13 is embraced piece 12 through being bolted to the bottom; Said self-aligning ball bearing 15 is fixed on said self-aligning ball bearing seat 13, supports said driving shaft 17, driven shaft 21, and said rubber wheel 16 is fixed on said driving shaft 17, driven shaft 21 through said swelling cover 20; Said small pulley 14 is fixed on the driving shaft 17 through interference fit; Said common v is with 11 to be fixed by big small pulley tensioning, and said brake disc 18 is fixed on said driving shaft 17 through interference fit, and said brake shell 19 is through being bolted to said self-aligning ball bearing seat 13; Said brake rubber block 23 is concentric with said brake disc 18, and said brake linkage 24 is fixedly connected with said steel wire 6.

Said big belt wheel 10 is replaced by belt wheel group 22 respectively with said small pulley 14; Said belt wheel group 22 is fixed on hand wheel shaft 9 and driving shaft 17 through interference fit; Said common v with 11 respectively tensioning be fixed on different-diameter and transmit than on the belt wheel that cooperates, can regulate the movement velocity and the size of the application of force on the said handwheel of removable emergency staircase.

Said common v is with 11 transmissions can use synchronous band transmission to replace, and band need not tensioning synchronously, has certain self-lock ability.

Said top is embraced piece 3 and is realized that with said punching aluminium sheet 4 fit adjustment center to center distance the tensioning of band replaces by installing regulating wheel additional, can let the tensioning of band more simple and convenient.

Support 1 is replaced by integrated stand, and the integrated stand top is provided with the platform that replaces the top to embrace piece 3, and four pin solid punching in bottom replaces the bottom to embrace piece 12, can make device more succinctly compact more.

Two sides install belt driver respectively additional about said support 1, and driving shaft left in 17 minutes becomes two connecting axles, rotate forward or backward simultaneously said about big belt wheel realize moving backward forward, said left and right sides belt wheel rotating speed difference can realize turning to.

Claims

1. removable emergency staircase; Comprise support; Said support is folding double ladder, and side is installed driving shaft and driven shaft respectively before and after the said frame bottom, and road wheel is installed at the two ends of said driving shaft and driven shaft respectively; It is characterized in that: said removable emergency staircase comprises belt driver and handwheel operating mechanism; Said belt driver comprises the big belt wheel and the small pulley that is installed in frame bottom of rack-mount end, and said small pulley is installed on the end of said driving shaft, and said big belt wheel is connected through driving-belt with small pulley; Said handwheel operating mechanism comprises hand wheel shaft, and said hand wheel shaft is positioned at the support upper end, and said big belt wheel is installed in an end of hand wheel shaft, and the other end of said hand wheel shaft is installed handwheel.

2. removable emergency staircase as claimed in claim 1; It is characterized in that: the other end of said driving shaft is installed brake gear; Said brake gear comprises brake disc, brake shell, steel wire and steel wire cover, brake controll block and block, and said brake controll block is the optical axis bearing support, is enclosed within on the hand wheel shaft; Said block is through being bolted on the punching aluminium sheet, and said steel wire and steel wire cover are clamped in the said optical axis bearing support slit fixing; Said brake shell is through being bolted to said self-aligning ball bearing seat, and said brake rubber block is concentric with said brake disc, and said brake linkage is connected with said fixation with steel wire.

3. according to claim 1 or claim 2 removable emergency staircase; It is characterized in that: said removable emergency staircase also comprises enclasp device; Said enclasp device comprises that piece is embraced at a top and piece is embraced in four bottoms; The last end floor beam that piece is installed in support is embraced at the top, and embrace on four footing that piece is installed in support four bottoms.

4. removable emergency staircase as claimed in claim 3 is characterized in that: said removable emergency staircase also comprises a punching aluminium sheet, two optical axis bearing supports, four self-aligning ball bearing bearing supports and four self-aligning ball bearings; Said top is embraced piece and is clamped and installed in a top of the trellis circular arc, and said punching aluminium sheet is fixed on the top through bolt and nut and embraces on the piece, and said two optical axis bearing supports are fixed on the aluminium sheet through screw-nut, and said hand wheel shaft passes through the optical axis bearing fixing on aluminium sheet; Said self-aligning ball bearing seat is embraced piece through being bolted to the bottom, and said self-aligning ball bearing is fixed on the said driving shaft of said self-aligning ball bearing seat supports, driven shaft.

5. removable emergency staircase as claimed in claim 4; It is characterized in that: said road wheel comprises rubber wheel and swelling cover; Said rubber wheel is fixed on said driving shaft, driven shaft through said swelling cover, and said small pulley is fixed on the driving shaft through interference fit.

6. removable emergency staircase as claimed in claim 4 is characterized in that: said big belt wheel and said small pulley are respectively the belt wheel group.

7. according to claim 1 or claim 2 removable emergency staircase; It is characterized in that: said belt driver has two covers; Two side difference mounting strap transmission devices about said support; Said driving shaft separately becomes two connecting axles, and left and right small pulley is fixed on described two connecting axles through interference fit, and said left and right big belt wheel is fixed on the hand wheel shaft through interference fit.