CN103043572B - Foldable overhaul platform - Google Patents

Foldable overhaul platform Download PDF

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Publication number
CN103043572B
CN103043572B CN201210570466.6A CN201210570466A CN103043572B CN 103043572 B CN103043572 B CN 103043572B CN 201210570466 A CN201210570466 A CN 201210570466A CN 103043572 B CN103043572 B CN 103043572B
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China
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platform
support arm
digonal
movable railing
foldable overhaul
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CN201210570466.6A
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CN103043572A (en
Inventor
陈华林
邹金灿
洪水
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Hitachi Elevator China Co Ltd
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Hitachi Elevator China Co Ltd
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Abstract

The invention provides a kind of Foldable overhaul platform, it comprises two guide rails, two connecting panels be arranged on guide rail, connect two folding suspension rods, platforms of these two connecting panels respectively, these two folding suspension rods comprise at least one scissor construction respectively, this at least one scissor construction topmost realizes being rotatably connected with connecting panel, and this at least one scissor construction realizes being rotatably connected with platform bottom.Foldable overhaul platform of the present invention, when not using, is collapsiblely retracted into well headroom, takies little hoistway space; Inspection platform is opened by jacking system during use, the work such as operating personnel is undertaken debugging by the inspection platform that sedan-chair jacking enters open configuration, maintenance, elevator normally runs, operating personnel can stand in the running condition of inspection platform being observed elevator components and measure its relevant data, and inspection platform does not affect the normal operation of elevator.

Description

Foldable overhaul platform
[technical field]
The present invention relates to elevators field, refer in particular to a kind of overhauling elevator platform for debugging, overhauling.
[background technology]
The machine-roomless lift of current main frame inhead type, the parts such as its towing machine, drg, control housing and velocity limiter are all arranged on well headroom.Operating personnel was when debugging, overhauling the elevator components of well headroom in the past, must stand in the operation of sedan-chair jacking row.But, when need in debug process to run elevator carry out detecting, debug time, operating personnel leaves sedan-chair top due to the requirement of safety, so operating personnel cannot carry out the parts (towing machine, drg, control housing and velocity limiter etc.) observing, debug hoistway top.This causes great inconvenience to debugging/upkeep operation personnel.
Therefore, provide a kind of inspection platform of conveniently debugging, upkeep operation real in necessary.
[summary of the invention]
The object of the present invention is to provide the inspection platform of a kind of convenient debugging, upkeep operation.
For realizing the object of the invention, provide following technical scheme:
The invention provides a kind of Foldable overhaul platform, it comprises two guide rails, two connecting panels be arranged on guide rail, connect two folding suspension rods, platforms of these two connecting panels respectively, these two folding suspension rods comprise at least one scissor construction respectively, this at least one scissor construction topmost realizes being rotatably connected with connecting panel, and this at least one scissor construction realizes being rotatably connected with platform bottom.
The present invention proposes a kind of novel Foldable overhaul platform.This inspection platform, when not using, is collapsiblely retracted into well headroom, takies little hoistway space; Inspection platform is opened by jacking system during use, the work such as operating personnel is undertaken debugging by the inspection platform that sedan-chair jacking enters open configuration, maintenance, elevator normally runs, operating personnel can stand in observation on inspection platform and surveys the running condition of elevator components and measure its relevant data, and inspection platform does not affect the normal operation of elevator.
In some embodiments, this scissor construction comprises two digonal links, and the digonal link lower end of these two digonal link upper ends and previous scissor construction is rotatably connected, or is rotatably connected with connecting panel; The digonal link upper end of these two digonal link lower ends and a rear scissor construction is rotatably connected, or is rotatably connected with platform; Mutually intersect and be rotationally connected into scissor-shaped in the middle part of two digonal links.In some embodiments, multiple scissor construction connects, and realizes double-layer staggered connection, can make this folding hanging rod structure more firmly, more flexible.
In some embodiments, being rotationally connected between described scissor construction, and being rotatably connected between scissor construction and connecting panel or platform is realized by pinned connection.
In some embodiments, this digonal link upper end has circular hole, and middle part and lower end have long slot bore.The setting of long slot bore makes folding suspension rod realize folding and retraction function better.
In some embodiments, it also comprises pull bar and strengthens structure, this pull bar is strengthened structure and is comprised at least two first short digonal links, at least two second short digonal links, at least one cross bars, hinged in the middle part of hinged place and cross bar in the middle part of two digonal links of scissor construction, or upper and lower digonal link hinged place and cross bar two ends hinged; The upper end of these at least two first short digonal links is rotationally connected by bearing pin with the middle part of connecting panel simultaneously, and lower end is rotationally connected by bearing pin with the two ends of cross bar respectively; These at least two second short digonal links, two mother rib lateral rotundums of its upper end and cross bar and the lower end of the first short digonal link or the lower end of digonal link are rotationally connected by bearing pin, its lower end simultaneously with platform in the middle part of circular hole be rotationally connected.The Joint strenght between structural strengthening scissor construction strengthened by pull bar.
In some embodiments, the upper end of this first short digonal link and the second short digonal link has circular hole, and lower end has long slot bore.The setting of long slot bore makes folding suspension rod realize folding and retraction function better.
In some embodiments, it also comprises roller devices, and this roller devices comprises at least two roller rods, the two ends of this roller rod are each passed through the connecting panel of both sides, and the end of roller rod is provided with band bearing roller, this guide rail is provided with guide groove, and this band bearing roller is placed in guide groove.Roller devices can implementation platform along the sway of guide rail, facilitate the practical operation of service personnel.
In some embodiments, it comprises electromagnetic locking device further, this electromagnetic locking device comprises electromagnet, magnet coil, first support arm, second support arm, 3rd support arm, first sleeve, second sleeve, spring, elastic axis is formed, this first support arm and the second support arm are fixed on guide rail two ends simultaneously, and the other end of the first support arm and the second support arm reaches guide way opening part, the on-fixed end of this second support arm successively with elastic axis, spring, second sleeve rubber cradle socket, and described elastic axis can be axially movable in the second sleeve, in this first support arm, also cover has first sleeve that can be socketed elastic axis, the 3rd described support arm one end is fixed on the second support arm, the other end and electromagnet are connected and fixed, this electromagnet further wrapped around magnet coil.Electromagnetic locking device can realize locking after platform movement, improves safety performance and stability.
In some embodiments, this first support arm and the second support arm are fixed on guide rail both sides respectively by bolt group.
In some embodiments, it also comprises jacking system, this jacking system comprises at least one variable-frequency motor, at least one interlock round bar, at least one first rope sheave, at least one second rope sheave and at least two steel ropes, this variable-frequency motor is fixed on the connecting panel of side, variable-frequency electric arbor one end is passed connecting panel and is connected the first rope sheave, the other end becomes to be rigidly connected with one end of interlock round bar, the described interlock round bar other end passes side connecting plate, and connect the second rope sheave, described at least two steel rope upper ends are also fixing on the first rope sheave and the second rope sheave respectively, lower end is fixed with the fag end axle through platform both sides respectively.Jacking system can make the lifting of platform realize automation mechanized operation, raises the efficiency.
In some embodiments, this variable-frequency motor, with auto-lock function, can not decline after platform is packed up automatically, improves safety performance.
In some embodiments, it also comprises and is connected to both sides and folds protection railing between suspension rod, improves the safety of operating personal further.
In some embodiments, it also comprises movable railing assembly, this movable railing assembly comprises at least two anchor shafts, at least one first movable railing, at least one second movable railing, at least one threaded line pipe, cross bar one end that structure strengthened by this first movable railing one end and pull bar is hinged, and the other end and threaded line pipe one end of this first movable railing are socketed; This second movable railing one end is hinged with cross bar one end lateral bracing strut being strengthened to structure, and the other end and the threaded line pipe other end of the second movable railing realize being threaded.Movable railing assembly is convenient to operating personnel and climbs up platform and leave platform.When platform drops to assigned address, by turning on threaded line pipe, the first movable railing and the second movable railing are disconnected, and remove its safeguard function, now operating personnel can climb up platform smoothly; Before operation, the first movable railing is reconnected into rigidity with the second movable railing, recover its safeguard function.When leaving platform, operating process is the contrary operation process climbing up platform.
In some embodiments, this first movable railing one end and pull bar strengthen the anchor shaft of cross bar one end of structure by hinge, and hinge is passed through with cross bar one end anchor shaft lateral bracing strut being strengthened to structure in this second movable railing one end.
In some embodiments, the other end of this first movable railing is provided with boss, this threaded line pipe is the tubular that one end open large other end opening is little, and the other end of the second movable railing has attacked outside thread, and the big uncork end of threaded line pipe attacks the negative thread coordinated with the second movable railing outside thread; The little open end of threaded line pipe and the boss of the first movable railing are socketed.
The present invention also provides a kind of elevator device, and this system comprises elevator hoistways, elevator, and it also comprises Foldable overhaul platform as above, and this Foldable overhaul platform is fixed on the hoisting beam of well headroom or well headroom by guide rail.
In some embodiments, the track of this Foldable overhaul platform is fixed on well headroom by holding-down bolt or expansion bolt or is bolted/is weldingly fixed on hoisting beam.
Contrast prior art, the present invention has the following advantages:
1. Foldable overhaul platform of the present invention can meet the requirements of one's work such as debugging, maintenance of operating personnel, facilitates it to debug on platform, detects the elevator components such as towing machine, drg, control housing and velocity limiter, improve the work efficiency of operating personnel.
2. the present invention is collapsible when not using packs up, and takies little hoistway space.
3. the present invention is provided with jacking system, and operating personnel opens easily and safely by controlling variable-frequency electric function, packs up inspection platform, improves the utilization ratio of inspection platform.
4. upper end of the present invention is provided with guide rail and roller devices, makes inspection platform along track sway, thus while meeting job requirements, can reduce the overall dimensions of platform, alleviates the weight of platform.
5. the present invention is provided with electromagnetic locking device in rail end, can after inspection platform moves to the end of guide rail, and the band bearing roller of pair roller device locks, and improves the safety that inspection platform uses.
6. on front side of inspection platform body of the present invention, rear side is provided with protection railing structure, the safety of inspection platform can be improved further, wherein the guard rail of side is movable protective railing, and position can take protection railing apart therebetween, facilitates personnel to enter inspection platform.
[accompanying drawing explanation]
Fig. 1 is that Foldable overhaul platform of the present invention is applied to schematic diagram machine room main frame put when opening;
Fig. 2 is that Foldable overhaul platform of the present invention is applied on machine room main frame and puts the schematic diagram after packing up;
Fig. 3 is the block diagram of Foldable overhaul platform open mode of the present invention;
Fig. 4 is the block diagram of Foldable overhaul platform collapsed state of the present invention;
Fig. 5 is the enlarged view of the calutron of Foldable overhaul platform of the present invention;
Fig. 6 is the cross sectional view of the calutron open mode of Fig. 5;
Fig. 7 is the cross sectional view of the calutron lock-out state of Fig. 5;
Fig. 8 is the enlarged view of the movable guard rail of Foldable overhaul platform of the present invention;
Fig. 9 is the partial view of the I part of Fig. 8.
[detailed description of the invention]
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail:
As depicted in figs. 1 and 2, a kind of novel Foldable overhaul platform, is installed on well headroom or well headroom hoisting beam, has and opens and folding two states.
As shown in Figure 3 and Figure 4, described novel Foldable overhaul platform, it comprises at least two guide rails 7, be fixed on close elevator components (as towing machine, drg, the control housing etc.) side of the hoisting beam of well headroom or well headroom by least four holding-down bolts or expansion bolt, and described guide rail 7 is provided with guide groove.
As shown in Figure 4, be provided with roller devices above described novel Foldable overhaul platform, it comprises at least two roller rods 12, two pieces of connecting panels 6 and at least 4 band bearing rollers 8.Described every root roller rod 12, all through the connecting panel 6 of platform both sides, forms " well " font; And a band bearing roller 8 is all installed in the close end of every root roller rod 12.Outer end with bearing roller 8 also has axle trip ring 19 to carry out spacing to band bearing roller 8.
As shown in Figure 3 and Figure 4, described roller devices, its band bearing roller 8 is installed in the guide groove of guide rail 7, and is with bearing roller 8 can roll in guide way, and drives inspection platform to do left and right or movable.
As shown in Figure 3 and Figure 4, the folding suspension rod of described inspection platform body both sides also comprises at least one scissor construction, at least one pull bar is strengthened structure and is connected with platform 1.Described scissor construction is made up of at least two digonal links 5 and at least five bearing pins 15.Described two digonal link 5 upper ends are rotationally connected by bearing pin 15 with the two ends of connecting panel 6 respectively, and, mutually pass crosswise bearing pin 15 in the middle part of two digonal links 5 and be rotationally connected into scissor-shaped; The lower end of described two digonal links 5 is rotationally connected by bearing pin 15 with platform 1 two ends circular hole respectively.
As shown in Figure 3 and Figure 4, preferably, described oblique railing 5 upper end has circular hole, and middle part and lower end all have long slot bore.
As shown in Figure 3 and Figure 4, described pull bar is strengthened structure and is made up of with at least one cross bar 4 at least two first short digonal links 20, at least two second short digonal links 3.Hinged place in the middle part of two described digonal links 5, between two digonal links 5 also with cross bar 4 in the middle part of circular hole hinged in the lump.Described have at least the upper end of two first short digonal links 20 to be rotationally connected by bearing pin 15 with the middle part circular hole of connecting panel 6 simultaneously, and lower end is rotationally connected by bearing pin 15 with the two ends circular hole of cross bar 4 respectively.Have the described in two second short digonal link 3 at least, two mother rib lateral rotundums of its upper end and cross bar 4 are rotationally connected by bearing pin 15 with the lower end of the described first short digonal link 20 simultaneously.The lower end of two described second short digonal links 3 simultaneously with platform 1 in the middle part of circular hole be rotationally connected by fag end axle 18.
As shown in Figure 3 and Figure 4, preferably, the upper end of the described first short oblique railing 20 and the second short digonal link 3 has circular hole, and lower end has long slot bore.
As shown in Figure 4 and Figure 5, preferably, described novel Foldable overhaul platform, its every root guide rail 7 both sides are also fixed with at least one electromagnetic locking device 13.Described electromagnetic locking device 13 is made up of electromagnet 13-9, magnet coil 13-8, the first support arm 13-1, the second support arm 13-3, the 3rd support arm 13-10, the first sleeve 13-2, the second sleeve 13-4, spring 13-5, elastic axis 13-7, rubber cradle 13-6 and bolt group 13-11.The first described support arm 13-1 and the second support arm 13-3 is fixed on guide rail 7 two ends respectively by bolt group 13-11, and the other end of the first support arm 13-1 and the second support arm 13-3 reaches guide rail 7 tapping.
As shown in Figure 5, the on-fixed end of the second described support arm 13-3 is socketed with elastic axis 13-7, spring 13-5, the second sleeve 13-4 and rubber cradle 13-6 successively, and described elastic axis 13-7 can be axially movable in the second sleeve 13-4.In the first described support arm 13-1, also cover has the first sleeve 13-2, the location of elastic axis 13-7 during for locking.The 3rd described support arm 13-10 one end is fixedly welded on the second support arm 13-3, and the other end and electromagnet 13-9 are connected and fixed.Described electromagnet 13-9 further wrapped around magnet coil 13-8.
Figure is as shown in 6 and Fig. 7, when magnet coil 13-8 is energized, the on-fixed end of the 3rd support arm 13-10 will make electromagnet 13-9 be with magnetic, and overcome spring force and hold elastic axis 13-7, move to bearing roller 8 in the circle surrounded by the first support arm 13-1, the second support arm 13-3 and elastic axis 13-7, i.e. the end of guide rail; When magnet coil 13-8 power-off, electromagnet 13-9 loses magnetism, and under the effect of spring 13-5 spring force, elastic axis 13-7 is restored, and band bearing roller 8 is locked in the end of guide rail by spring shaft 13-7.
As shown in Figure 3 and Figure 4, preferably, described inspection platform body is also provided with jacking system.Described jacking system is made up of at least one variable-frequency motor 9, at least one interlock round bar 11, at least one first rope sheave 10, at least one second rope sheave 21 and at least two steel ropes 17.Described variable-frequency motor 9 is fixed on the connecting panel 6 of side, and described variable-frequency electric arbor one end is passed connecting panel 6 and is connected with the first rope sheave 10, and the other end connects into rigidity with one end of interlock round bar 11.Described interlock round bar 11 other end passes side connecting plate 6, and is connected with the second rope sheave 21.Two described steel rope 17 upper ends are also fixed around at the first rope sheave 10 and the second rope sheave 21 upper-level threshold respectively, and the circular hole that the fag end axle 18 that lower end is each passed through platform 1 both sides is provided with is also fixing.Not during use and maintenance platform, variable-frequency motor 9 rotates backward, and the first rope sheave 10 and the second rope sheave 21 pack up steel rope 17 simultaneously, pull platform 1 upward movement, inspection platform is folded and packs up; During usage platform, variable-frequency motor 9 rotates forward, and folding suspension rod opens under the Action of Gravity Field of platform 1, and variable-frequency motor 9 carrys out the descending speed of parametric controller 1 by controlling steel rope 17.Preferably, described variable-frequency motor, also with auto-lock function, can not decline after platform is packed up automatically.
As shown in Fig. 4 and Fig. 8, Fig. 9, preferably, the front side of described flexible inspection platform body or rear side (installation side of disconnected plate 6, guide rail 7) are also provided with movable railing 22.Described movable railing 22 is made up of at least two anchor shaft 22-1, at least one first movable railing 22-2, at least one second movable railing 22-4, at least one threaded line pipe 22-3 and at least two bearing pin 22-5.It is hinged that bearing pin 22-5 is passed through in the anchor shaft 22-1 of first described movable railing 22-2 one end and cross bar 4 one end.The other end of the first described movable railing 22-2 is also provided with boss.One end anchor shaft 22-1 and the offside cross bar 4 of second described movable railing 22-4 one end are hinged by bearing pin 22-5.And the other end of the second described movable railing 22-4 has been attacked outside thread and has been served as and be threaded with threaded line pipe 22-3.Described threaded line pipe 22-3 is pre-large post-small tubular, and in cylinder, big uncork end attacks the negative thread coordinated with the second movable railing 22-4 outside thread; After the small end of described threaded line pipe 22-3 and the boss of the first movable railing 22-2 are socketed, connect into rigidity with the second movable railing 22-4 by helicitic texture.When platform 1 drops to assigned address, by turning on threaded line pipe 22-3, the first movable railing 22-2 and the second movable railing 22-4 is disconnected, and remove its safeguard function, now operating personnel can climb up platform 1 smoothly.Before operation, the first movable railing 22-2 is reconnected into rigidity with the second movable railing 22-4, recovers its safeguard function.When leaving platform 1, operating process is the contrary operation process climbing up platform.
The operating process of Foldable overhaul platform of the present invention is:
When using this Foldable overhaul platform, after operating personnel enters sedan-chair top, and cage top overhauling is gone upward to the assigned address on hoistway top.Operating personnel is arranged on the control button of the platform lifting device of sedan-chair top electric box by starting, make the variable-frequency motor 9 be arranged on inspection platform rotate forward and put down platform.After Awaiting Overhaul platform completes and opens, operating personnel removes the threaded line pipe 22-3 on movable railing 22, and movable rail is disconnected; Operating personnel climbs up inspection platform 1.
Before operation, operating personnel needs first movable rail 22 to be recovered safeguard function, and then elevator can normally run.
During operation, if operating personnel needs traveling overhaul platform to opposite side (as original at host computer side, control housing, velocity limiter need be moved to then) operation, operating personnel is by being arranged on the unlock button of the electromagnetic locking device on inspection platform, make band bearing roller 8 recover to roll, now platform can be moved to target side.Roller moves to target rear flank, and electromagnetic locking device can recover lock-out state automatically, and locking strip bearing roller again.
After operation, before operating personnel leaves inspection platform, first overhauling elevator to be up to the position of specifying on hoistway top, then to dismantle movable railing 22; Leave after inspection platform enters into sedan-chair top, operating personnel locks movable railing 22 again, and packs up inspection platform by the push button control jacking system of sedan-chair top electric box.
The foregoing is only preferred embodiment of the present invention, protection scope of the present invention is not limited thereto, and anyly all belongs within scope based on the equivalent transformation in technical solution of the present invention.

Claims (15)

1. a Foldable overhaul platform, is characterized in that, it comprises two guide rails, be arranged on two connecting panels on guide rail, connect two folding suspension rods of these two connecting panels respectively, platform, roller devices, electromagnetic locking device, these two folding suspension rods comprise at least one scissor construction respectively, this at least one scissor construction topmost realizes being rotatably connected with connecting panel, this at least one scissor construction realizes being rotatably connected with platform bottom, this roller devices comprises at least two roller rods, the two ends of this roller rod are each passed through the connecting panel of both sides, and the end of roller rod is provided with band bearing roller, this guide rail is provided with guide groove, this band bearing roller is placed in guide groove, and this electromagnetic locking device comprises electromagnet, magnet coil, first support arm, second support arm, 3rd support arm, first sleeve, second sleeve, spring, elastic axis is formed, and this first support arm and the second support arm are fixed on guide rail two ends simultaneously, and the other end of the first support arm and the second support arm reaches guide way opening part, the on-fixed end of this second support arm successively with elastic axis, spring, second sleeve rubber cradle socket, and described elastic axis can be axially movable in the second sleeve, in this first support arm, also cover has first sleeve that can be socketed elastic axis, the 3rd described support arm one end is fixed on the second support arm, the other end and electromagnet are connected and fixed, and this electromagnet further wrapped around magnet coil.
2. Foldable overhaul platform as claimed in claim 1, it is characterized in that, this scissor construction comprises two digonal links, and the digonal link lower end of these two digonal link upper ends and previous scissor construction is rotatably connected, or is rotatably connected with connecting panel; The digonal link upper end of these two digonal link lower ends and a rear scissor construction is rotatably connected, or is rotatably connected with platform; Mutually intersect and be rotationally connected into scissor-shaped in the middle part of two digonal links.
3. Foldable overhaul platform as claimed in claim 2, is characterized in that, being rotationally connected between described scissor construction, and being rotatably connected between scissor construction and connecting panel or platform is realized by pinned connection.
4. Foldable overhaul platform as claimed in claim 3, it is characterized in that, this digonal link upper end has circular hole, and middle part and lower end have long slot bore.
5. Foldable overhaul platform as claimed in claim 4, it is characterized in that, it also comprises pull bar and strengthens structure, this pull bar is strengthened structure and is comprised at least two first short digonal links, at least two second short digonal links, at least one cross bars, hinged in the middle part of hinged place and cross bar in the middle part of two digonal links of scissor construction, or upper and lower digonal link hinged place and cross bar two ends hinged; The upper end of these at least two first short digonal links is rotationally connected by bearing pin with the middle part of connecting panel simultaneously, and lower end is rotationally connected by bearing pin with the two ends of cross bar respectively; These at least two second short digonal links, two mother rib lateral rotundums of its upper end and cross bar and the lower end of the first short digonal link or the lower end of digonal link are rotationally connected by bearing pin, its lower end simultaneously with platform in the middle part of circular hole be rotationally connected.
6. Foldable overhaul platform as claimed in claim 5, it is characterized in that, the upper end of this first short digonal link and the second short digonal link has circular hole, and lower end has long slot bore.
7. Foldable overhaul platform as claimed in claim 1, it is characterized in that, this first support arm and the second support arm are fixed on guide rail both sides respectively by bolt group.
8. Foldable overhaul platform as claimed in claim 4, it is characterized in that, it also comprises jacking system, this jacking system comprises at least one variable-frequency motor, at least one interlock round bar, at least one first rope sheave, at least one second rope sheave and at least two steel ropes, this variable-frequency motor is fixed on the connecting panel of side, variable-frequency electric arbor one end is passed connecting panel and is connected the first rope sheave, the other end becomes to be rigidly connected with one end of interlock round bar, the described interlock round bar other end passes side connecting plate, and connect the second rope sheave, described at least two steel rope upper ends are also fixing on the first rope sheave and the second rope sheave respectively, lower end is fixed with the fag end axle through platform both sides respectively.
9. Foldable overhaul platform as claimed in claim 8, it is characterized in that, this variable-frequency motor is with auto-lock function.
10. Foldable overhaul platform as claimed in claim 4, is characterized in that, it also comprises and is connected to both sides and folds protection railing between suspension rod and movable railing assembly.
11. Foldable overhaul platforms as claimed in claim 10, it is characterized in that, this movable railing assembly comprises at least two anchor shafts, at least one first movable railing, at least one second movable railing, at least one threaded line pipe, cross bar one end that structure strengthened by this first movable railing one end and pull bar is hinged, and the other end and threaded line pipe one end of this first movable railing are socketed; This second movable railing one end is hinged with cross bar one end lateral bracing strut being strengthened to structure, and the other end and the threaded line pipe other end of the second movable railing realize being threaded.
12. Foldable overhaul platforms as claimed in claim 11, it is characterized in that, this the first movable railing one end and pull bar strengthen the anchor shaft of cross bar one end of structure by hinge, and hinge is passed through with cross bar one end anchor shaft lateral bracing strut being strengthened to structure in this second movable railing one end.
13. Foldable overhaul platforms as claimed in claim 12, it is characterized in that, the other end of this first movable railing is provided with boss, this threaded line pipe is the tubular that one end open large other end opening is little, the other end of the second movable railing has attacked outside thread, and the big uncork end of threaded line pipe attacks the negative thread coordinated with the second movable railing outside thread; The little open end of threaded line pipe and the boss of the first movable railing are socketed.
14. 1 kinds of elevator devices, this system comprises elevator hoistways, elevator, it is characterized in that, it also comprises the Foldable overhaul platform as described in any one of claim 1 ~ 13, and this Foldable overhaul platform is fixed on the hoisting beam of well headroom or well headroom by guide rail.
15. elevator devices as claimed in claim 14, is characterized in that, the track of this Foldable overhaul platform is fixed on well headroom by holding-down bolt or expansion bolt or is bolted/is weldingly fixed on hoisting beam.
CN201210570466.6A 2012-12-25 2012-12-25 Foldable overhaul platform Active CN103043572B (en)

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