CN2578293Y

CN2578293Y - Bidirectional elevator speed limitor

Info

Publication number: CN2578293Y
Application number: CN 02248317
Authority: CN
Inventors: 于向前; 王有国
Original assignee: Guangzhou Hitachi Elevator Co Ltd
Current assignee: Hitachi Elevator China Co Ltd
Priority date: 2002-09-27
Filing date: 2002-09-27
Publication date: 2003-10-08
Anticipated expiration: 2012-09-27

Abstract

The utility model discloses a bidirectional elevator speed limiter. In the utility model, both sides of a rope pulley installed on a supporting seat are respectively provided with a set of interlocking centrifugal block component; a spring is arranged between a centrifugal block installing seat and the rope pulley; two beating plates corresponding to the centrifugal block component can be movably installed on the supporting seat under the rope pulley and can be respectively linked with an oppositely installed positioning hook which is respectively matched with a positioning pin which is oppositely and symmetrically installed on the supporting seat; a steel cable wound on the rope pulley is positioned on the rope pressing block and a rope clamping pincers which is installed on the supporting seat. The utility model can realize two-way actions and has the advantages of simple structure, good stability and good reliability.

Description

Bidirectional speed limiter for elevator

Technical field

The utility model relates to a kind of elevator governor that is used for situations such as elevator way traffic hypervelocity, disconnected rope are implemented monitoring.

Background technology

Along with the development of elevator industry, countries in the world are more and more higher to the requirement of lift running safety, and elevator governor comprises speed trigger mechanism and brake equipment usually, and wherein brake equipment has wheel brake type and two kinds of structures of cord-pressing block brake type.Wheel brake type rope sheave is stressed bigger, can quicken the wearing and tearing of velocity limiter, not only influences the life-span of velocity limiter, also influences the reliability of its work; And the power of lifting of cord-pressing block brake type velocity limiter is to guarantee that by the rope and the friction of cord-pressing block working stability is reliable, so what adopt on the elevator usually is cord-pressing block brake type velocity limiter.The velocity limiter that uses on the existing elevator all is a movement in one direction, promptly just works when car is descending.At present also relevant for the research of bidirectional speed limiter, but because complex structure, work is unreliable and can not get implementing on actual product.

Summary of the invention

The purpose of this utility model is for a kind of simple in structure, bidirectional speed limiter for elevator that stable and reliable operation can realize bidirectional-movement is provided.

Main technical schemes of the present utility model is: the centrifugal block assembly that a cover can link respectively is equipped with in the rope sheave both sides that are installed on the bearing, described centrifugal block assembly comprises that symmetry is hinged on two centrifugal on the rope sheave, be connected the connecting rod between two centrifugal, be installed in the compression spring between centrifugal and the rope sheave wheel hub, be connected with spring between centrifugal mount pad and the rope sheave, re-pack and be installed in movably on the bearing of rope sheave below with cooresponding two of centrifugal block assembly, two location hook interlocks that re-pack respectively with reverse installation, location hook then cooperates with the locating dowel pin that reverse symmetry is installed on the cord-pressing block on the bearing respectively, and the steel rope on the rope sheave is at cord-pressing block and be installed between the rope-clamping pliers on the bearing.

Under normal condition, the effect of compression spring makes one centrifugal to be pressed on the wheel hub, promoting another centrifugal by the connecting rod between two centrifugal rotates around hinge-point, and also be pressed on the wheel hub, like this, by adjusting compression spring, rope sheave is not changeed or rotate normally can not cause centrifugal with contacting of re-packing, location hook then hooks the locating dowel pin on the cord-pressing block, and the steel rope of elevator governor can freely move between cord-pressing block and rope-clamping pliers.When situation such as operation hypervelocity, disconnected rope occurring when elevator, rope sheave is twirl, centrifugal also twirl thereupon, under action of centrifugal force, centrifugal elastic force that overcomes compression spring outwards opens, and rotating speed is fast more, centrifugal is opened big more, when speed reached governor tripping speed, the projecting point on centrifugal just bump re-packed, and drives location hook, make it to throw off from locating dowel pin, the cord-pressing block by gravity falls, and wire rope grip between cord-pressing block and rope-clamping pliers, is finished the action of velocity limiter.Since installed two the cover actuating mechanisms, the utility model can be realized bidirectional-movement, and simple in structure, working stability is reliable.

The specific embodiment

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

Fig. 1 is the Facad structure scheme drawing of an embodiment of the utility model;

Fig. 2 is the lateral plan of Fig. 1;

Fig. 3 is the constructional drawing of location hook among Fig. 1;

Fig. 4 is the constructional drawing that re-packs among Fig. 1.

As shown in Figure 1, 2, the bidirectional speed limiter for elevator of present embodiment, its structure is: install The centrifugal block assembly that each Zhuan You one cover of rope sheave 10 both sides on the Zai Zhi Zuo 1 can link, described Centrifugal block assembly comprise symmetry be hinged on two centrifugal-

blocks

2,2 on the rope sheave 10 ', be connected The connecting rod 3 of two centrifugal-blocks 2,2 ' between Zhi, be installed in a centrifugal-block 2 Yu rope sheave wheel hubs Compress Spring 4 between Zhi 11, the mounting points of Compress Spring 4 on the centrifugal-block 2 is Yu the peace of connecting rod 3 The Zhuan point is positioned at the both sides of centrifugal-block pin joint. For the ease of guaranteeing that centrifugal block assembly is with rope sheave Zhuan Moving, Zai centrifugal-block mount pad is Yu be connected with spring 5 between Zhi the rope sheave 10. Yu centrifugal block assembly pair Answer two re-pack and 6,6 ' movably are installed on the Zhi Zuo of rope sheave 10 belows, beat for two The location hook 7,7 that plate 6,6 ' difference Yu oppositely installs ' interlock, location hook 7,7 ' Ze branch Other Yu reverse symmetry be coaxial be installed in cord-pressing block 8,8 on the Zhi Zuo ' on alignment pin 81,81 ' cooperating, the steel wire rope 9 on the rope sheave is positioned at cord-pressing block Yu and is installed in rope-clamping pliers on the Zhi Zuo Between Zhi 12.

Shown in Fig. 2,3,4, two re-pack 6,6 ' are hinged on the Zhi Zuo Zai Yu that re-packs Zhuan You reduction torsion spring between Zhi the location hook, 6,6 ' upper each the You shifting block 61,61 that re-packs ', the location The allocating slot 71,71 that hook 7,7 ' upper You cooperates Yu Zhi ', when shifting block inserts allocating slot, their Zhi Between You revolution gap. This structure can prevent centrifugal-block Yu the interference between Zhi re-packing, such as Zai The lower centrifugal-block of rope sheave drive turns clockwise, Zhang opens, the contact A Zhuan punch panel 6 of centrifugal-block 2, Re-packing 6 drives location hooks 7 by shifting block 61, allocating slot 71 and rotates counterclockwise, and makes the pressure on You limit The action of rope piece. 6 ' Ze centrifugal-block 2 ' back surface B points that are subjected to another side that re-pack of opposite side Zhuan hits, You Yu re-packs 6 ' on shifting block 61 ' insertion location hook 7 ' on allocating slot 71 ' time You The revolution gap, the 6 ' Zhuan that therefore re-packs is moving, location hook 7 ' motionless Yu the cord-pressing block maintenance on Zuo limit, Mutual interference does not take place, and resetted as Yong by torsion spring after 6 ' Zai centrifugal-block Zhuan that re-packs. If rope When wheel rotated counterclockwise, the mechanism of cord-pressing block was therewith identical, and by adjusting the compression bullet The pressure of spring 4 can obtain different governor tripping speeds.

Rope-clamping pliers 12 is contained on the bearing slidably, at rope-clamping pliers 12 and be fixed on to be equipped with between the baffle plate 13 on the bearing and adjust spring 14.Because the steel rope 9 on the rope sheave is between cord-pressing block and rope-clamping pliers 12, when press rope wheel falls when clamping steel rope with rope-clamping pliers, the pressure that changes adjustment spring 14 will make Clamping force also change.

Claims

1, a kind of bidirectional speed limiter for elevator, it is characterized in that: the centrifugal block assembly that a cover can link respectively is equipped with in rope sheave (10) both sides that are installed on the bearing (1), described centrifugal block assembly comprises that symmetry is hinged on two centrifugal (2) on the rope sheave (10), (2 '), be connected two centrifugal (2), connecting rod between (2 ') (3), be installed in the compression spring (4) between centrifugal (2) and the rope sheave wheel hub (11), be connected with spring (5) between centrifugal mount pad and the rope sheave (10), with centrifugal block assembly cooresponding two re-pack (6), (6 ') are installed on the bearing of rope sheave (10) below movably, two re-pack (6), (6 ') respectively with the location hook (7) of reverse installation, (7 ') interlock, location hook (7), (7 ') then are installed in cord-pressing block (8) on the bearing with reverse symmetry respectively, locating dowel pin on (8 ') (81), (81 ') cooperate, and the steel rope (9) on the rope sheave is positioned at cord-pressing block and is installed between the rope-clamping pliers (12) on the bearing.

2, a kind of bidirectional speed limiter for elevator according to claim 1, it is characterized in that: two re-pack (6), (6 ') are hinged on the bearing, re-pack and location hook between reduction torsion spring is housed, re-packing respectively has shifting block (61), (61 ') on (6), (6 '), the allocating slot (71), (71 ') that cooperate are with it arranged on location hook (7), (7 '), when shifting block inserts allocating slot, the revolution gap is arranged between them.

3, according to claim 1 or 2 described a kind of bidirectional speed limiter for elevator, it is characterized in that: rope-clamping pliers (12) is contained on the bearing slidably, at rope-clamping pliers (12) and be fixed on to be equipped with between the baffle plate (13) on the bearing and adjust spring (14).