CN101066733B

CN101066733B - Foldable overhaul platform

Info

Publication number: CN101066733B
Application number: CN2006101195924A
Authority: CN
Inventors: 王兆安; 王伟峰
Original assignee: YONGDA ELEVATOR EQUIPMENT CO Ltd SHANGHAI
Current assignee: Yungtay Elevator Equipment China Co Ltd
Priority date: 2006-12-13
Filing date: 2006-12-13
Publication date: 2010-09-29
Anticipated expiration: 2026-12-13
Also published as: CN101066733A

Abstract

The foldable overhaul platform includes platform, supporting rack, guardrail and hand rails. The supporting rack is fixed onto to the ceiling over the lift bearing beam, the guardrail has one end connected movably to the supporting rack and the other end connected detachably to the rails, and the platform has one end connected movably to the supporting rack and the other end connected movably to the rails. There is one normally off switch connected to the safety loop of the lift on the supporting rack and with normally off contact connected to the hinge axis between the platform and the rails. All the platform, the guardrail and the hand rails can rotate around separate hinge shafts, so that the overhaul platform may be folded normally and developed for overhauling. During overhaul, the power source is cut off with the normally off switch to ensure safety.

Description

Foldable overhaul platform

Technical field

The present invention relates to a kind of elevator inspection platform, particularly the machine-roomless lift inspection platform.

Background technology

Along with reaching its maturity of machine-roomless lift technology, machine-roomless lift has been that the popular ladder in elevator market is planted at present, and the characteristics of the maximum of machine-roomless lift are exactly the machine room of having cancelled traditional elevator.The time to be elevator manufacturer brought difficulty to the configuration of elevator components such as towing machine, velocity limiter, control housing etc. for the developer brings material benefit for this.At present the solution that adopts usually of each elevator manufacturer is in the elevator hoistways with arrangements of components such as towing machine, velocity limiter, control housings.Though present elevator safety standard GB 7588-2003 does not have the clear and definite space for maintenance at no machine room to do clear and definite regulation, but elevator forced standard as present CONTINENTAL AREA OF CHINA, no machine room also should satisfy among the standard GB7588-2003 in the bulk of parts such as towing machine, velocity limiter, control housing " b of 6.3.2.1) for movable parts being keeped in repair and checking; in the place of necessity and the place (seeing 12.5.1) that needs artificial emergency operation, a horizontal clearance area that is not less than 0.50m * 0.60m be arranged; " requirement.

The above-mentioned movable parts of mentioning mainly refers to the towing machine of elevator.The position arranged of the towing machine of the machine-roomless lift of each tame elevator company has following several mode substantially in the market: 1, be arranged in (referring to Fig. 1) in the pit; 2, on the top layer wall of Bu Zhiing (referring to Fig. 2); 3, be arranged on hoistway (except that pit and the top layer) wall (referring to Fig. 3).

In the present traction machine of elevator without engine room arrangement as shown in Figure 1 to Figure 3, towing machine 1 is that green phase closes joint piece respectively on the pit 21, wall of well 22, top layer wall 23 of fixing elevator hoistways 2.

Traction machine of elevator without engine room arrangement as shown in Figure 1, by the inspection platform of pit 21 as towing machine 1, but this has just played restriction to the layout of pit 21 other parts; In Fig. 2, arrangement shown in Figure 3, the maintenance of towing machine 1 can only be used the space at lift car 3 tops as inspection platform, there is very big danger like this, because towing machine 1 is fixed on the wall of well 22 or top layer wall 23 of hoistway 2, cause the projecting plane of towing machine 1 to be in outside the projecting plane of car 3 (referring to Fig. 4), be to form a gap 4 between towing machine 1 and the car 3 greater than towing machine thickness, the hidden danger that this gap 4 exists people or instrument to fall thus at lift car 3 during as inspection platform.

Summary of the invention

Technical matters to be solved by this invention provides a kind of Foldable overhaul platform, existing the problems referred to above when the towing machine that has overcome present machine-roomless lift is arranged in the elevator hoistways.

Technical matters solved by the invention can realize by the following technical solutions:

A kind of Foldable overhaul platform is characterized in that: it comprises platform, several mounting brackets, a plurality of guardrail and handrail; Described mounting bracket is distribution up and down, be fixed on the top layer wall of elevator load bearing beam top, one end of described guardrail and the mounting bracket link joint on top, the upper end of the other end and handrail detachably connects, the mounting bracket link joint of described flat-bed one end and bottom, an end link joint of the flat-bed other end and handrail.

The distance of described mounting bracket between up and down is corresponding with described flat-bed length, and the distance between about mounting bracket is corresponding with the flat-bed width.

Being that hinge connects between described mounting bracket and the guardrail, is that hinge connects between mounting bracket and the platform, connects by the hinge pin axle between described platform and the handrail; Detachably connect by fastener between described handrail and the guardrail.

When the user is worked on inspection platform, elevator is in halted state, on the mounting bracket on described top, be provided with a normally closed switch, described normally closed switch is connected with the safety return circuit of elevator, the position of the junction hinge pin axle of corresponding described platform of the mounting bracket on described top and handrail is provided with draw-in groove, when platform was folding, described hinge pin axle can snap onto in this draw-in groove; The hinge pin axle of described platform and handrail junction and the contact of described normally closed switch are corresponding.

Foldable overhaul platform of the present invention, because platform, guardrail, handrail all are can be respectively to fold around separately hinge axis rotation, so in needs, inspection platform can be launched to use, but each autofolding rises on the fixing wall in the time of obsolete, and determine its folding whether putting in place by normally closed switch, add that normally closed switch is to insert in the safety return circuit of elevator, after having only that Foldable overhaul platform is folding and putting in place, after the normally closed switch closure, safety return circuit is just connected, and elevator could move.Therefore when Foldable overhaul platform puts down, normally closed switch will cut off the power supply of elevator operation, and elevator is out of service, improve the sense of security.

Description of drawings

Below in conjunction with accompanying drawing embodiments of the invention are elaborated.

Fig. 1 is arranged in scheme drawing in the pit for present traction machine of elevator without engine room.

Fig. 2 is arranged in scheme drawing on hoistway (except that pit and the top layer) wall for present traction machine of elevator without engine room.

Fig. 3 is arranged in scheme drawing on the hoistway top layer wall for present traction machine of elevator without engine room.

Fig. 4 is car and gap, a towing machine projecting plane scheme drawing in the present machine-roomless lift.

Fig. 5 is the structural representation of Foldable overhaul platform of the present invention and towing machine.

Fig. 6 is the structural representation of Foldable overhaul platform of the present invention.

Fig. 7 is in the scheme drawing of normal condition (elevator mode of operation) for Foldable overhaul platform of the present invention.

Fig. 8 is the scheme drawing of the platform expansion of Foldable overhaul platform of the present invention.

Fig. 9 is the scheme drawing of the handrail expansion of Foldable overhaul platform of the present invention.

Figure 10 is the scheme drawing of the guardrail expansion of Foldable overhaul platform of the present invention.

Figure 11 is the scheme drawing of Foldable overhaul platform of the present invention in running order (elevator inspecting state).

The specific embodiment

For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.

As Fig. 5, shown in Figure 6, a kind of Foldable overhaul platform 5, it comprises platform 51, four mounting brackets 52, two guardrails 53 and handrails 54, four mounting brackets 52 are distribution up and down, be fixed on the top layer wall 23 of elevator load bearing beam 11 tops, wherein top two, below two.

Above two mounting brackets 52 corresponding with the distance between following two mounting brackets are about in the of 52 with the length of platform 51, distance between two mounting brackets 52 of two mounting brackets 52 and right sides in left side is corresponding with the width of platform 51, one end of two guardrails 53 and the mounting bracket on top 521 are by hinge pin axle link joint, one end of platform 51 and the mounting bracket of bottom 522 are by the hinge link joint, and an end of the other end of platform 51 and handrail 54 is by hinge pin axle 541 link joints.After platform 51 puts down, detachably connect by bolt 56 between handrail 54 and the guardrail 53.

As shown in Figure 7, when making this Foldable overhaul platform 5 folding, elevator can be in running state, and when Foldable overhaul platform 5 put down, elevator was in running state.On the mounting bracket 521 of the side on top, be provided with a normally closed switch 55, normally closed switch 55 is connected with the safety return circuit of elevator, the mounting bracket 521 corresponding platforms 51 on described top are provided with draw-in groove 521a with the position of the hinge pin axle 541 of the junction of handrail 54, and described platform 51 is corresponding with the contact 551 of normally closed switch 55 with the hinge pin axle 541 of handrail 54 junction.

When Foldable overhaul platform 5 is in folded state (both elevator mode of operations), the hinge pin axle 541 of the both sides of the junction of platform 51 and handrail 54, because the gravity of platform 51 self, directly snap among the draw-in groove 521a on the mounting bracket 521 fixing, the hinge pin axle 541 of a side is pressed onto the contact 551 of normally closed switch 55 simultaneously, and switch 55 is disconnected; Because normally closed switch 55 is to insert in the safety return circuit of elevator, normally closed switch 55 just conductings of closed back safety return circuit, elevator just can normally move.

As shown in Figure 8, when needs use and maintenance platform 5, after personnel run to the height of inspection platform by lift car 3, inspection platform 51 is upwards mentioned, launch platform 51 after making the hinge pin axle 541 of platform 51 both sides break away from draw-in groove 521a on the mounting brackets 521, this moment, platform 51 broke away from the contact 551 of normally closed switch 55 with handrail 54 connection places, and normally closed switch 55 is disconnected, the safety return circuit of elevator opens circuit, and elevator can not normally move.

Shown in Fig. 9,10,11, behind the expansion platform 51, launch handrail 54 earlier, launch guardrail 53 again; To lock with two groups of bolts 56 between handrail 54 and the guardrail 53, this moment, whole Foldable overhaul platform 5 launched to finish, and service personnel can be at the enterprising line correlation upkeep operation of bench board.

After upkeep operation is finished, can be according to shown in Fig. 8,9,10,11, remove the bolt 56 between handrail 54 and the guardrail 53 earlier, regain guardrail 53 and handrail 54, regain platform 51 then, the hinge pin axle 541 of platform 51 with handrail 54 junction snapped among the draw-in groove 521a of top two mounting brackets 521, finish the recovery of inspection platform 5, and have only when inspection platform and pack up the contact 551 that rear platform 51 just can be pressed onto normally closed switch 55 fully, make normally closed switch 55 closures, the safety return circuit path, elevator can normally move.

More than show and described groundwork of the present invention and principal character and advantage of the present invention.The technical personnel of the industry should be understood; the present invention is not restricted to the described embodiments; that describes in the foregoing description and the specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.

Claims

1. Foldable overhaul platform, it is characterized in that: it comprises platform, several mounting brackets, a plurality of guardrail and handrail; Described mounting bracket is distribution up and down, be fixed on the top layer wall of elevator load bearing beam top, one end of described guardrail and the mounting bracket link joint on top, the upper end of the other end and handrail detachably connects, the mounting bracket link joint of described flat-bed one end and bottom, the lower end link joint of the flat-bed other end and handrail; On the mounting bracket on described top, be provided with a normally closed switch, described normally closed switch is connected with the safety return circuit of elevator, be to connect by the hinge pin axle between described platform and the handrail, the hinge pin axle of described platform and handrail junction and the contact of described normally closed switch are corresponding; During use, launch platform, handrail and guardrail successively, handrail and guardrail are connected to each other the formation inspection platform.

2. inspection platform as claimed in claim 1 is characterized in that: the distance of described mounting bracket between up and down is corresponding with described flat-bed length, and the distance between about mounting bracket is corresponding with the flat-bed width.

3. inspection platform as claimed in claim 1 is characterized in that: being that hinge connects between described mounting bracket and the guardrail, is that hinge connects between mounting bracket and the platform, detachably connects by fastener between described handrail and the guardrail.