CN102556796A

CN102556796A - Emergency rescue apparatus for elevator tractor

Info

Publication number: CN102556796A
Application number: CN2011104631362A
Authority: CN
Inventors: 丰川庆
Original assignee: Meidensha Electric Manufacturing Co Ltd
Current assignee: Meidensha Electric Manufacturing Co Ltd
Priority date: 2010-12-09
Filing date: 2011-12-09
Publication date: 2012-07-11
Also published as: JP5861252B2; JP2012121699A; CN202400708U

Abstract

The present invention discloses an emergency rescue apparatus for an elevator tractor, which is provided with a simple structure and can enable a handwheel to be mounted on the motor of the tractor. The tractor (100) of an elevator comprises a motor (110), a brake (120) and traction wheel (130). The carrier (113a) of the motor (110) is provided with a bearing hole (119), a large gear (118) is fixed on the rotation shaft (114). When the handwheel shaft (151) of the handwheel (150) is inserted into the bearing hole (119), the small gear of the handwheel (150) is engaged with the large gear of the motor side, thereby being capable of using human force to rotate a handwheel portion (152), rotating the rotation shaft to rotate the traction wheel (130), and using human force to move the elevator car.

Description

The emergency relief device of elevator traction machine

Technical field

The present invention relates to the emergency relief device of elevator traction machine.

It is to rescue to be closed the handwheel (Japanese: installation constitution hand scroll Ha Application De Le) that the passenger in the elevator cage uses that the present invention has studied especially when elevator promptly stops owing to power failure waits.

Background technology

The towing machine of elevator has traction sheave and is used to rotate the electrical motor that drives this traction sheave.Main rope wound on the traction sheave (Japanese: Net cars) on the cab mounted on one end of the main rope, counterweight mounted on the other end of the main rope.When utilizing electrical motor to make the traction sheave rotation, sedan-chair case lifting moving.

Yet in case have a power failure, the sedan-chair case of elevator will stop between the floor, and the passenger can be closed in the sedan-chair case.

For the facility that is provided with non-utility power generation equipment, the electrical motor of the driven by power towing machine that this non-utility power generation equipment capable of using sends makes the sedan-chair case be elevated to hithermost floor through the operation that recovers elevator, is closed the passenger of going into thereby separate to rescue.

On the other hand,,, make the sedan-chair case be elevated to hithermost floor, closed the passenger of going into thereby separate to rescue through utilizing handwheel that electrical motor, the traction sheave of towing machine are rotated for when having a power failure, carrying out emergency relief for the facility that is not provided with non-utility power generation equipment.

At this, the electrical motor that utilizes handwheel to make towing machine, the prior art of traction sheave rotation are described.

Fig. 3 is the technology shown in the patent documentation 1 (Fig. 9 of TOHKEMY 2000-351548).In Fig. 3, the 10th, towing machine, the 11st, electrical motor, the 12nd, drg, the 15th, handwheel.

When take place having a power failure, open drg 12, handwheel 15 is connected on the axle head of S. A. 11a of electrical motor 11.Then, utilize the manpower rotation to drive handwheel 15 and make S. A. 11a rotation, thus up-down sedan-chair case.

Fig. 4 is the technology shown in the patent documentation 2 (Fig. 2 of international publication number WO 2004/000710).In Fig. 4, the 20th, towing machine, the 21st, electrical motor, the 22nd, drg, the 23rd, traction sheave, the 25th, handwheel.

When take place having a power failure, open drg 22, the projection 25a of handwheel 25 is inserted in the breach of rotating part (with the rotating part one bonded assembly part of traction sheave 23, electrical motor).Then, utilize the manpower rotation to drive handwheel 25 and make rotating part (with the rotating part one bonded assembly part of traction sheave 23, electrical motor) rotation, thus up-down sedan-chair case.

In addition, when handwheel 25 rotation predetermined angulars, projection 25a and backboard 24 interfere.Therefore; If interfere, then repeat following action, make drg 22 work and take off handwheel 25; Make handwheel 25 be positioned at other position of rotation and insert breach to projection 25a, open drg 22 and make handwheel 25 only rotate predetermined angular once more thereafter.

Fig. 5 is the technology shown in the patent documentation 3 (Fig. 1 of TOHKEMY 2000-63063).In Fig. 5, the 30th, towing machine, the 31st, electrical motor, the 32nd, drg, the 33rd, traction sheave, the 35th, handwheel.

Have miniature gears 35a on the handwheel 35, have big gear wheel 33a on the traction sheave 33.Handwheel 35 so that miniature gears 35a and big gear wheel 33a ingear mode can keep by the handwheel holding member 34 on the base that is arranged on towing machine 36 with rotating freely.

When taking place to have a power failure, open drg 32, utilize the manpower rotation to drive handwheel 35 and make traction sheave 33 rotations, thus up-down sedan-chair case.

In this example, owing to used

gear

33a, 35a, therefore, even if manpower also can make traction sheave 33 rotations easily.

The prior art document

Patent documentation

[special permission document 1] TOHKEMY 2000-351548

[special permission document 2] international publication number WO 2004/000710

[special permission document 3] TOHKEMY 2000-63063

Summary of the invention

Invent problem to be solved

In prior art shown in Figure 3, handwheel 15 is connected with the axle head of S. A. 11a.If adopt this structure, then need under the situation of big torque at large-scale elevator etc., utilize and manually can not make its rotation.

In addition, because handwheel 15 is connected with the axle head of S. A. 11a, therefore, coder etc. can not be installed on this axle head.

In recent years, owing to utilize changer (inverter) control to carry out electric machine control,,, will have problems if coder is not installed at axle head mostly at the axle head outfit coder of S. A..

In prior art shown in Figure 4, because handwheel is not installed in axle head, thus coder can be installed, but exist in the textural problem that can not rotate continuously.

In prior art shown in Figure 5, can use

gear

33a, 35a to come manually to rotate.

Yet, under the situation of using

gear

33a, 35a, owing to need to keep handwheel 35, be used for handwheel is remained in the handwheel holding member 34 on the base 36 of elevator traction machine 30 so be provided with.

If adopt this structure; Owing to need the base 36 of configuration towing machine 30; Do not have problems for the double base structure that keeps this traction sheave therebetween for utilizing two bearings to be sandwiched in traction sheave, but in being disposed at traction sheave the exterior cantilevered construction of bearing, just can not adopt this structure.

Be disposed at traction sheave under the situation of the exterior cantilevered construction of bearing in employing, be used to keep the handwheel holding member of handwheel to be installed in towing machine.

But; Towing machine 50 that kind as shown in Figure 6 utilize the traction sheave 53 of electrical motor 51 driven in rotation to be cantilevered construction, and; Under the big situation such as situation of the diameter of the brake disc 52a of axially long situation, drg 52; For avoiding interfering, need to increase handwheel holding member 54, the handwheel 55 that is used to keep handwheel 55, there is the problem that is unfavorable for operability and cost.

In addition, in the structure of Fig. 6, be located at gear 53a and the gear 55a engagement that is located on the handwheel 55 on the traction sheave 53.

The present invention makes in view of above-mentioned prior art; Its purpose is to provide a kind of like this emergency relief device of elevator traction machine; It can utilize simple structure to be installed in handwheel on the electrical motor; Even if the power of rotation handwheel is very little, also can realizes emergency relief, and can be installed in machines such as coder on the electrical motor of towing machine.

The means of dealing with problems

The structure of the present invention that addresses the above problem is characterised in that, comprising: have traction sheave and the towing machine that is used to rotate the electrical motor that drives said traction sheave; Run through the bearing hole on the side's carriage that is formed on said electrical motor; Be fixed on outer hull S. A., that be positioned at said electrical motor of said electrical motor and be formed with the locational big gear wheel of the bracket side of said bearing hole; And handwheel, said handwheel has: can closely insert the hand wheel shaft in the said bearing hole; Be fixed on the handwheel portion on the base end side of said hand wheel shaft; And miniature gears, this miniature gears is located at the front of said hand wheel shaft, in the time of in said hand wheel shaft inserts said bearing hole and said big gear wheel engagement.

The invention effect

In the present invention, owing to handwheel is not configured in the axle head of the S. A. of electrical motor, can machines such as coder be installed at the axle head of S. A..

In addition, because the big gear wheel of the S. A. of miniature gears that makes handwheel and electrical motor meshes transmitting torque, so the rotation handwheel need not very big power, so can safe operation.

In addition, owing to keep the hand wheel shaft of handwheel through the bearing hole that on the carriage of electrical motor, forms, so can reduce number of components.

In addition, owing to can bearing hole that be used to keep handwheel and the big gear wheel near-earth that joins be disposed,, can improve operation property and cost-cutting so handwheel can miniaturization.

Description of drawings

Fig. 1 is the constructional drawing of expression according to the emergency relief device of the elevator traction machine of the embodiment of the invention.

Fig. 2 is the constructional drawing of expression according to the emergency relief device of the elevator traction machine of the embodiment of the invention.

Fig. 3 is the constructional drawing of expression according to the emergency relief device of the elevator traction machine of prior art.

Fig. 4 is the constructional drawing of expression according to the emergency relief device of the elevator traction machine of prior art.

Fig. 5 is the constructional drawing of expression according to the emergency relief device of the elevator traction machine of prior art.

Fig. 6 is the constructional drawing of expression according to the emergency relief device of the elevator traction machine of prior art.

The specific embodiment

Below, based on embodiment embodiment of the present invention is described at length.

[embodiment]

Fig. 1 and Fig. 2 represent the emergency relief device according to the elevator traction machine of the embodiment of the invention.Elevator traction machine 100 shown in two figure is made up of electrical motor 110, drg 120 and traction sheave 130 as major part.In addition, the emergency relief device is made up of handwheel 150 grades.

In addition, Fig. 1 representes that handwheel 150 is installed in the state on the towing machine 100, and Fig. 2 representes the state that handwheel 150 takes off from towing machine 100.

The outer hull 111 of electrical motor 110 by framework cylindraceous 112, the carriage 113a and being used to that is used to stop up an end face side of this framework 112 carriage 113b that stops up the other end side of this framework 112 constitutes.

S. A. 114 can be supported with the bearing 115b that is fixed on the carriage 113b by the bearing 115a that is fixed on the carriage 113a with rotating freely.

Rotor 116 is fixed on the S. A. 114, and stator 117 is located on the inner peripheral surface of framework 112.

Gear (big gear wheel) 118 is fixed on position S. A. 114, that be positioned at outer hull 111 and carriage 113a side, and the axle center of S. A. 114 is consistent with the centre of gration of gear 118.

And, on carriage 113a, (leave the position of S. A. 114) in abaxial position and run through and be formed with bearing hole 119.

Drg 120 is made up of drg main body 121 and brake disc 122.Brake disc 122 is integrally formed with traction sheave 130.

Traction sheave 130 is fixed on the leaning on the axle head of carriage 113b side of S. A. 114 of electrical motor 110, with S. A. 114 rotations.Be formed with the coiling groove 131 of the main rope that is used to reel on the outer peripheral face of traction sheave 130.

Handwheel 150 by columned hand wheel shaft 151, be fixed on the handwheel portion 152 on the base end side (in Fig. 1 and Fig. 2, being the left side) of this hand wheel shaft 151 and be located at gear (miniature gears) 153 formations on the front (in Fig. 1 and Fig. 2, being the right side) of this hand wheel shaft 151.

The external diameter of the hand wheel shaft 151 of handwheel 150 is for can closely inserting the size in the bearing hole 119, and the external diameter of miniature gears 153 is less than the internal diameter of this bearing hole 119.

Therefore, the hand wheel shaft 151 of handwheel 150 can closely insert in the bearing hole 119.In hand wheel shaft 151 closely inserts bearing hole 119 and the gear 153 of the front of this hand wheel shaft 151 when being positioned at the inside of electrical motor 110, bearing hole 119 plays the bearing function that can support hand wheel shaft 151 with rotating freely.And, big gear wheel 118 engagements on the miniature gears of handwheel 150 153 and the S. A. 114 that is fixed on electrical motor 110.

That is to say,, need be used to keep the structure (handwheel support structure) of handwheel 150 in order to make miniature gears 153 and big gear wheel 118 engagements.In this example, utilize " hand wheel shaft 151 of handwheel 150 closely insert in the bearing hole 119 and the such handwheel support of bearing function that this bearing hole 119 played to support hand wheel shaft 151 construct " with rotating freely, support this handwheel 150.

Take place not having a power failure etc. generally, as shown in Figure 2, take off handwheel 150 from towing machine 100 in advance.At this moment, cover bearing hole 119, to prevent that dust from getting into electrical motor 110 inside or human bodies etc. and being involved in electrical motor 110 in-to-in accidents with covering (omitting expression among the figure).

Owing to have a power failure or breakdown of machinery etc. stops between the floor sedan-chair case of elevator, the passenger is closed under the situation in this sedan-chair case, for moving sedan-chair case to hithermost floor, opens drg 120.

If serious overbalance between sedan-chair case and the counterweight is then because the sedan-chair case can be naturally towards heavier side decline, so can move to hithermost floor.

Yet, obtaining between sedan-chair case and the counterweight under the situation of balance, need manually to move the sedan-chair case.

At this moment, take off the lid on the bearing hole 119 that is installed in carriage 113a, insert the hand wheel shaft of handwheel 150 151 in these bearing holes 119, and big gear wheel 118 engagements on the miniature gears 153 that makes handwheel 150 and the S. A. 114 that is fixed on electrical motor 110.

At this moment, because bearing hole 119 plays the bearing function that can support hand wheel shaft 151 with rotating freely, so can under the state of the engagement of guaranteeing gear 153 and gear 118, make 152 rotations of handwheel portion.This torque passes to traction sheave 130 via hand wheel shaft 151, miniature gears 153, big gear wheel 118 and S. A. 114, thus these traction sheave 130 rotations.As a result, can make the sedan-chair case move to hithermost floor, can rescue the passenger.

In the case, because gear 153 is littler than gear 118, thus little even if be used to rotate the power (manpower) of handwheel 150, also can make traction sheave 130 rotations easily, thereby the sedan-chair case is moved.

In addition, owing to playing, bearing hole 119 can support the bearing function of hand wheel shaft 151, so be used to support that being configured in of handwheel 150 becomes simple on the whole with rotating freely.

In addition, owing to handwheel 150 is not connected with the axle head of S. A. 114, so coder etc. can be installed on the axle head of this S. A. 114.

[nomenclature]

100 towing machines

110 electrical motors

111 outer hulls

112 frameworks

113a, 113b carriage

114 S. A.s

115a, 115b bearing

116 rotors

117 stators

118 gears (big gear wheel)

119 bearing holes

120 drgs

121 drg main bodys

122 brake discs

130 traction sheaves

131 coiling grooves

150 handwheels

151 hand wheel shafts

152 handwheel portions

153 gears (miniature gears)

Claims

1. the emergency relief device of an elevator traction machine is characterized in that, the emergency relief device of this elevator traction machine comprises: towing machine, and it has traction sheave and is used to rotate the electrical motor that drives this traction sheave; Bearing hole, it runs through on the side's carriage that is formed on said electrical motor; Big gear wheel, it is fixed on outer hull S. A., that be positioned at said electrical motor of said electrical motor and is formed with on the position of bracket side of said bearing hole; And handwheel;

Said handwheel has: hand wheel shaft, and it can closely insert in the said bearing hole; Handwheel portion, it is fixed on the base end side of said hand wheel shaft; And miniature gears, this miniature gears is located on the front of said hand wheel shaft, in the time of in said hand wheel shaft inserts said bearing hole, and this miniature gears and the engagement of said big gear wheel.