CN2460504Y

CN2460504Y - Counter-weight type special life hoister for well way without machine room

Info

Publication number: CN2460504Y
Application number: CN 00254472
Authority: CN
Inventors: 吕芳侪
Original assignee: XINGUOYANG ELECTROMECHANICAL CO Ltd
Current assignee: XINGUOYANG ELECTROMECHANICAL CO Ltd
Priority date: 2000-10-08
Filing date: 2000-10-08
Publication date: 2001-11-21
Anticipated expiration: 2010-10-08

Abstract

The utility model relates to a counter-weight type special lift hoister for a well way without a machine room. A multi-segment transmission part is utilized to cause a motor part and a winding roll body to be assembled with each other to form an integrative structure and to be assembled at the same machine seat body, so the integral length can be reduced greatly; thus, the span space is saved, and the lift hoister can be easily installed at the well way. The utility model is mainly composed of the machine seat body, the motor part, a first transmission part, a second transmission part, a third transmission part, the winding roll body, a braking device and other elements, wherein, a bearing barrel is arranged at the machine seat body and is utilized to support the first transmission part to be embedded with a pre-position bearing of the first transmission part; the motor part is utilized to cause a stator to be fixed to the machine seat body and is also utilized to cause a rotor to be assembled with the first transmission part, and the rotor and the first transmission part are connected with the winding roll body in a transmission mode by using the second transmission part and the third first transmission part; thus, a minimum space between the motor part and the winding roll body can be realized; in addition, the winding roll body is fixed to the third transmission part to obtain the suitable supporting strength.

Description

No machine room counter weight type hoistway special lift winch

The utility model is relevant a kind of no machine room counter weight type hoistway special lift winch, refer to especially a kind ofly be applicable to no machine room counter weight type elevator, and the integral erection space can significantly reduce, and can be installed on elevator hoist in the hoistway.

Press, in population metropolitan area or the cities and towns close than silk fabric, available soil is very limited, so high building stands in great numbers, because the floor of building is higher, companion ladder becomes important carrying device, providing people to take or the carrying of article, and moves up and down fast.Companion ladder often is called box elevator or electronic stream cage again, its groundwork, be to utilize a dead sheave group as effort-saving mechanism, one side of dead sheave group is the load-carrying side, and opposite side is the counterweight side, therefore bestows elevator when the dead sheave group and does the time spent, and the weight of counterweight side can be cut down the weight of load-carrying side, and making the required weight lifting load of dead sheave group be: the load-carrying load deducts the counterweight load, so have labour-saving mechanism.

" counter weight type " companion ladder of general habit formula, need add a machine room in the top, be provided with for equipments such as dead sheave group, motor, electromagnetic brake device, governor and electrical control dishes, the dead sheave group is driven by motor, it is elevator chamber that one side of its main cable is hung, be the load-carrying side, opposite side is then hung balance weight, is the counterweight side; The mode of distribution of weight is that the maximum gross with elevator chamber is designed to basis, and with half distribution of weight as balance weight of maximum gross; Work as at full load, motor only need overcome half of elevator chamber maximum gross because of the effect of balance weight, and the friction of main cable and guide rail, can bestow lifting; When non-loaded and elevator chamber desire descended, motor then need lift the weight of balance weight; Yet the habit formula companion ladder of this type because of being provided with machine room, so the cost of construction is higher and the engineering time is longer, is installed the large-engineering that companion ladder becomes building.

For this reason, the companion ladder of habit formula is the above-mentioned difficult problem that faces of solution, the companion ladder that a kind of being called " no machine room formula " arranged, as No. 346924 application case of Taiwan patent gazette Announcement Number, shown in its first figure, be known no machine room formula companion ladder, mainly be along the required area that sets up of companion ladder, extend downward the ground basalis of building, and be provided with an accommodation chamber, and coil winder and motor equal power device are installed in the accommodation chamber, make building not need to be provided with in the top again " machine room ", to reduce the waste in construction cost and space.Right this habit formula companion ladder, because of being arranged at the ground basalis of building, feature makes it right on the form of its working space and this body structure, and still have shortcoming in some practicalities, now after being set forth in, sincerely please refer to: because power such as its coil winder and motor are that device is installed in the accommodation chamber, in case when subterranean room ponding or infiltration, must cause serious damage for facility itself, not only increase maintenance cost on foot so one practises the formula companion ladder, and also may cause shortening of service life, and it is very huge influence the safety of companion ladder, therefore, demand urgently being improved in fact.This habit formula companion ladder, because of its architectural feature makes so, coil winder and motor all need be provided with carriage and be fixed, and need add joint piece between coil winder and the motor, bearing, and bearing seat, so its entire length is longer, and the cost cost is higher, therefore, still needs in the ground of building basalis, other is provided with the installation of an accommodation chamber for facility, and can't be installed in the hoistway, construction cost that it reduced and space still belong to limited with respect to the companion ladder that machine room is arranged.This habit formula companion ladder, because of spare part more, coil winder, joint piece, bearing, bearing seat and motor, need fortune to be assigned to assembled on site, so the quality end of companion ladder unit relies field technician's control, though unit quality when dispatching from the factory is good, the possibility of wrong mistake in installation process, its quality control is difficult for.

Therefore, the utility model is because of because practise the above-mentioned many practical shortcoming of formula product, actively conceive and actual tests, improve its integral structure, a kind of practical shortcoming of habit formula of improving and develop, and the utility model that can significantly promote its practical effect there is not machine room counter weight type hoistway special lift winch.

So main creation purpose of the present utility model is to be to provide a kind of no machine room counter weight type hoistway special lift winch; Comprise that mainly foundation mass, motor part, first driving section, second driving section, the 3rd driving section, spiral disk body, brake device etc. constitute; Make motor part and the spiral disk body can be by first driving section, second driving section, and the connection transmission of the 3rd driving section, and be combined into one, and be installed on the same foundation mass, to reach minimum spacing, significantly reduce its entire length and set up the space, and can be installed in the hoistway, not only improve the habit formula because of subterranean room ponding or infiltration, may cause facility to damage shortcoming, and be easier to after being combined into one install and quality control.

Another creation purpose of the present utility model is to be to provide a kind of no machine room counter weight type hoistway special lift winch; Comprise that mainly foundation mass, motor part, first driving section, second driving section, the 3rd driving section, spiral disk body, brake device etc. constitute; This motor part is that stator is fixed in foundation mass, and rotor is combined with first driving section, by first transmission shaft, and preposition bearing and rearmounted bearing, and obtains suitable support strength, does not need to establish in addition bearing seat and carriage.

A creation purpose more of the present utility model is to be to provide a kind of no machine room counter weight type hoistway special lift winch; Comprise that mainly foundation mass, motor part, first driving section, second driving section, the 3rd driving section, spiral disk body, brake device etc. constitute; This spiral disk body is to be fixed in the 3rd driving section, by the 3rd transmission shaft, and preposition bearing and rearmounted bearing, and obtains suitable support strength, does not need to establish in addition bearing seat and carriage.

Another creation purpose of the present utility model is to be to provide a kind of no machine room counter weight type hoistway special lift winch; Comprise that mainly foundation mass, motor part, first driving section, second driving section, the 3rd driving section, spiral disk body, brake device etc. constitute; This brake device can be made expansion link descend by the electromagnetic valve effect, and spiral arm is rotated down, and dwindle the support interval of supporting end, then brake arm is under the effect of guide rod and spring, and Lining is promptly bestowed clamping to the brake outer rim, and has the effect of braking brake; And when electromagnetic valve discharges expansion link, spiral arm is resetted, recover to support the support interval of end, and Lining is promptly thrown off the clamping action to the brake outer rim.

The utility model is further created purpose, is to be to provide a kind of no machine room counter weight type hoistway special lift winch; Comprise that mainly foundation mass, motor part, first driving section, second driving section, the 3rd driving section, spiral disk body, brake device etc. constitute; This brake device is to be provided with a urgent manual unit, and draws outward and be installed on hoistway and operate outward, when emergency takes place, can progressively spur pull bar and cable wire, and make framework with the of short duration release of expansion link, and make the stream cage drop to the tram one by one.

The utility model is in order to reach above-mentioned purpose and effect, and the technological means that it adopted comprises that foundation mass, motor part, driving section, spiral disk body, brake device etc. constitute; Wherein:

This foundation mass is to be provided with bearing cartridge, and the driving section is located in the foundation mass, can obtain suitable span, to support motor part;

This motor part is made of rotor part and stator department, rotor part be fixed in the driving section and with the transmission of winding roll sports association knot, stator department then is fixedly arranged on the foundation mass and drives rotor part.

For further understanding feature of the present utility model, technological means and the concrete function of being reached, purpose, now enumerate of the present utility model one than specific embodiment, and conjunction with figs., figure number detailed description as back:

Description of drawings is as follows:

Fig. 1 is a three-dimensional appearance scheme drawing of the present utility model;

Fig. 2 is a structural profile scheme drawing of the present utility model;

Fig. 3 is the perspective exploded view of the utility model Transmission;

Fig. 4 A is the schematic perspective view of the utility model first driving section;

Fig. 4 B is the perspective exploded view of the utility model first driving section;

Fig. 5 A is the schematic perspective view of the utility model second driving section;

Fig. 5 B is the perspective exploded view of the utility model second driving section;

Fig. 6 A is the schematic perspective view of the utility model the 3rd driving section;

Fig. 6 B is the perspective exploded view of the utility model the 3rd driving section;

Fig. 7 is the plan sketch of the utility model brake device;

Fig. 8 is the schematic perspective view of the utility model electromagnetic valve;

Fig. 9 is the perspective exploded view of the utility model electromagnetic valve;

Figure 10 is the plan sketch of the utility model brake device and urgent manual unit;

Figure 11 is the scheme drawing of the utility model embodiment in hoistway.

Figure number is described as follows:

Hoistway 1 main cable 2

Stream cage 3 pulley pedestals 4

Pulley 5 pulleys 6

Balance weight 7 foundation mass 10

Bearing cartridge 11 motor part 20

Rotor cover body 21 rotors 22

Stator cover body 23 stators 24

Coil 25 brake outer rims 26

Axis hole 27 several heat radiation slotted eyes 28

Groove 29 first driving sections 30

First transmission shaft, 31 keyways 311

Groove 312 class's sections 313

Axle envelope section 314 thread segments 32

Nut 321 retainingf keys 33

Preposition bearing 34,36 linings 35

The C type is buckled 351 C types and is buckled 37

Transmission gear 38 rearmounted bearings 39

Oil sealing 391 preposition bearings 34

Second driving section, 40 second transmission shafts 41

Keyway 411 grooves 412

Class's section 413 class's sections 414

Transmission gear 42 retainingf keys 43

Retainingf key 43 reducing gear 44

Keyway 441 C types buckle 45

Preposition bearing 46 rearmounted bearings 47

Shaft seal cover 48 the 3rd driving section 50

The 3rd transmission shaft 51 flanges 511

Keyway 512 grooves 513

Class's section 514 class's sections 516

Keyway 517 retainingf keys 52,57

Reducing gear 53 keyways 531

The C type is buckled 54 preposition bearings 55

Rearmounted bearing 56 oil sealings 58

Shaft seal cover 59 spiral disk bodies 60

Axis hole 61 keyways 62

Flank 63 protects

edge

64,65

Fin ring

66,66 spiral grooves 67

Brake device 70 electromagnetic valves 71

Expansion link 711 fixed

arms

72,72

Spiral arm

73,73 is supported end 731,731

Brake arm

74,74 Linings 741,741

Guide rod 75 screw threads 751

Nut 752 springs 76

Protecting cover 77 adjusting levers 78

Adjust nut 781,781; Framework 79

Slotted eye 791 urgent manual units 80

Pedestal 81 pull bars 82

Cable wire fixer 83 adapter plates 84

Protective tube 85 cable wires 86

Fixed mount 87 bracing frames 90

Seeing also Fig. 1 to shown in Figure 3, is three-dimensional appearance scheme drawing of the present utility model, structural profile scheme drawing, and the perspective exploded view of Transmission; Shown in figure, the utility model mainly comprises: foundation mass 10, motor part 20, first driving section 30, second driving section 40, the 3rd driving section 50, spiral disk body 60, brake device 70 and urgent manual unit 80 etc. constitute; Wherein:

This foundation mass 10 is to be provided with bearing cartridge 11, supports first driving section 30 for burying preposition bearing 34,36 underground;

This motor part 20 is to be made of institutes such as rotor cover body 21, rotor 22, stator cover body 23, stator 24, coils 25; Rotor 22 is fixed in rotor cover body 21 inside, rotor cover body 21 has a brake outer rim 26 that is the face that contracts in the class, and be provided with axis hole 27, several heat radiation slotted eye 28 and groove 29, make rotor cover body 21 obtain to have minimum volume and radiating efficiency under the good intensity; 25 of stator 24 and coils are fixed in the stator cover body 23, and are fixedly arranged on foundation mass 10;

This first driving section 30, be by first transmission shaft 31, retainingf key 33, preposition bearing 34,36, lining 35, and institute such as rearmounted bearing 39 constitute; First transmission shaft 31 is inserted in axis hole 27 back with retainingf key 33 fixed rotor cover body 21 radially, and front end is provided with thread segment 32 and axially lock for nut 321, and with rotor 22 synchronous interactions, back segment also is provided with transmission gear 38, class's section 313 and axle envelope sections 314; Class's section 313 is inserted in rearmounted bearing 39 and is buried underground into foundation mass 10, and forms the suitable moment of span with preposition bearing 34,36,314 sheathed oil sealings 391 of axle envelope section; The C type buckle 351 buckle be fixed in bearing cartridge 11 and fixing preposition bearing 34 on foundation mass 10; The C type is buckled 37 and is buckled and be fixed in first transmission shaft 31 and locate another preposition bearing 36; Lining 35 makes preposition bearing 34,36 have suitable support interval;

This second driving section 40, be by second transmission shaft 41, retainingf key 43, reducing gear 44, preposition bearing 46, and institute such as rearmounted bearing 47 constitute; Second transmission shaft 41 is provided with transmission gear 42, with retainingf key 43 fixing reducing gear 44 radially, eat with transmission gear 38 and to close transmission, continuous with the C type buckle 45 bestow axial buckle solid, front end is provided with class's section 413, is inserted in preposition bearing 46 and buries underground into foundation mass 10, and the rear end also is provided with class's section 414, fit with it after rearmounted bearing 47 is buried foundation mass 10 underground, and be aided with shaft seal cover 48 driving fits;

The 3rd driving section 50, be by the 3rd transmission shaft 51, retainingf key 52,57, reducing gear 53, preposition bearing 55, and institute such as rearmounted bearing 56 constitute; The 3rd transmission shaft 51 is with retainingf key 52 fixing reducing gear 53 radially, eat with transmission gear 42 and to close transmission, continuous with the C type buckle 54 bestow axial buckle solid, front end is provided with class's section 514, be inserted in preposition bearing 55 and bury underground into foundation mass 10, middle-end then is inserted in rearmounted bearing 56 and is also buried underground into foundation mass 10, and is aided with oil sealing 58 and axle can be obtained minimum volume, protect

edge

64,65 and

fin ring

66,66 formation spiral grooves 67, for spiral.

See also shown in Fig. 4 A to Fig. 4 B, be the schematic perspective view of the utility model first driving section, and perspective exploded view; Shown in figure, this first driving section 30, be by first transmission shaft 31, retainingf key 33, preposition bearing 34,36, lining 35, and institute such as rearmounted bearing 39 constitute; Wherein:

First transmission shaft 31, front end are provided with keyway 311 and thread segment 32, and the rear end is provided with groove 312, transmission gear 38, class's section 313 and axle envelope section 314; Keyway 311 supplies radially fixed rotor cover body 21 of retainingf key 33; And groove 312 is buckled 37 for the C types and buckle solid and fix preposition bearing 36.

See also shown in Fig. 5 A to Fig. 5 B, be the schematic perspective view of the utility model second driving section, and perspective exploded view; Shown in figure, this second driving section 40, be by second transmission shaft 41, retainingf key 43, reducing gear 44, preposition bearing 46, and institute such as rearmounted bearing 47 constitute; Wherein:

Second transmission shaft 41, front end are provided with keyway 411, groove 412, reach class's section 413, and the rear end is provided with transmission gear 42 and class's section 413; Keyway 411 is for retainingf keys 43 fixing reducing gear 44 radially, and groove 412 is buckled 45 for the C types and buckle and consolidate and axial restraint reducing gear 44;

Reducing gear 44 is provided with keyway 441 for retainingf keys 43 bondings, and eats with transmission gear 38 and to close transmission.

See also shown in Fig. 6 A to Fig. 6 B, be the schematic perspective view of the utility model the 3rd driving section, and perspective exploded view; Shown in figure, the 3rd driving section 50, be by the 3rd transmission shaft 51, retainingf key 52,57, reducing gear 53, preposition bearing 55, and institute such as rearmounted bearing 56 constitute; Wherein:

The 3rd transmission shaft 51, front end are provided with flange 511, keyway 512, groove 513, reach class's section 514, and the rear end is provided with class's section 516, reaches keyway 517; Keyway 512 is for retainingf keys 52 fixing reducing gear 53 radially, and groove 513 for the C types buckle 54 buckle consolidate and with flange 511 axial restraint reducing gear 53; 517 in keyway supplies retainingf key 57 to key in;

Reducing gear 53 is provided with keyway 531 for retainingf keys 52 bondings, and eats with transmission gear 42 and to close transmission.

See also shown in Figure 7ly, be the plan sketch of the utility model brake device; Shown in figure, this brake device 70 is to be made of institutes such as electromagnetic valve 71, fixed

arm

72,72,

spiral arm

73,73,

brake arm

74,74, guide rod 75, spring 76, adjusting levers 78; Wherein:

Electromagnetic valve 71 is provided with fixed

arm

72,72, and is pivoted with

spiral arm

73,73, and with expansion link 711 supportings;

Brake arm

74,74, be hubbed at foundation mass 10, and the lower end wears combination with guide rod 75, the front end of guide rod 75 is inserted in spring 76, and fixing with protecting cover 77, the end of guide rod 75 is provided with screw thread 751 and nut 752 lockings, makes

brake arm

74,74 have Clamping force, its tail end then is provided with adjusting

lever

78,78 and adjusts nut 781,781, to adjust the start gap of brake;

When electromagnetic valve 71 effect and expansion link 711 when descending,

spiral arm

73,73 will be rotated down, and contract in the support interval of support end 731,731, then under the effect of guide rod 75 and spring 76, Lining 741,741 is bestowed clamping to brake outer rim 26, and has the effect of braking brake;

When popping up when electromagnetic valve 71 release expansion links 711,

spiral arm

73,73 supports the support interval of end 731,731 to recover spinning reduction, and then Lining 741,741 is thrown off the clamping action to the outer rim 26 of braking.

See also Fig. 8 to shown in Figure 10, be the schematic perspective view of the utility model electromagnetic valve, perspective exploded view, and the plan sketch of brake device and urgent manual unit; Shown in figure, this brake device 70, can be provided with framework 79 and cross-over connection on the expansion link 711 of electromagnetic valve 71, unlikelyly

influence spiral arm

73,73 rotation starts, on it and have a slotted eye 791;

This urgent manual unit 80 is to be made of institutes such as pedestal 81, pull bar 82, cable wire fixer 83, adapter plate 84, protective tube 85, cable wire 86 and fixed mounts 87; Cable wire 86 is arranged on the framework 79, but drawing expansion link 711; When emergency takes place when, even electromagnetic valve 71 expansion links 711 descend, brake device 70 promptly generates the braking brake effect, yet the stream cage of companion ladder may be stagnated between two floors, for making it drop to the tram,, utilize pull bar 82 of short duration pulling cable wires 86 so use urgent manual unit 80, can make framework 79 with expansion link 711 of short duration releases, and make the stream cage drop to the tram one by one.

See also shown in Figure 11ly, be the scheme drawing of the utility model embodiment in hoistway; Shown in figure, foundation mass 10 is fixedly arranged on bracing frame 90 and is installed in the hoistway 1, and main cable 2 is the spiral disk body 60 that arrives via the pulley pedestal 4, pulley 5 of stream cage 3, again pile warp pulley 6 and suspention balance weight 7.

Intending around here being proposed explanation again, is brake device 70 of the present utility model and urgent manual unit 80, is for increasing the safety and the practicality of device; Wherein:

brake arm

74,74 is positioned at brake outer rim 26 sides and bestows clamping, does not increase single-piece length; And that the pedestal 81 of urgent manual unit 80 can cause hoistway 1 outward is fixing; When emergency takes place when, can be in peripheral operation pull bar 82 and pulling cable wire 86, making framework 79 in the hoistway 1, and make stream cage 4 drop to the tram one by one with expansion link 711 of short duration releases, not only its safety of processing ease is higher; Its structure space and the effect of being promoted, all should can be considered is to promote according to preferable enforcement example of the present utility model, and follows according to being suitable for that spirit of the present utility model is extended, so must be included in the claim of this case.

Intend the lay special stress on explanation around here, be that the topmost intention spirit of the utility model is: foundation mass 10, be provided with a bearing cartridge 11, make motor part 20 can obtain to support, and by first driving section 30, second driving section 40, and the connection transmission of the 3rd driving section 50 and motor part 20 and spiral disk body 60 be combined into one, and be installed in foundation mass 10 jointly, to reach minimum spacing, and then significantly reduce its entire length and set up the space, but make its direct mount within hoistway 1, be subjected to subterranean room ponding or infiltration deeply and improve habit formula person, the puzzlement that damages of the facility that cause, significantly to promote the safety of companion ladder; And this motor part 20 is that stator 24 is fixed in foundation mass 10, and rotor 22 is combined with first driving section 30, and its preposition bearing 34,36 is embedded in bearing cartridge 11, does not need to establish in addition bearing seat and carriage; And this spiral disk body 60 also is to be fixed in the 3rd driving section 50, and obtains suitable support strength, does not also need to establish in addition bearing seat and carriage; Its architectural feature and the space kenel that is constituted are the elite place of the utility model intention in fact.

In sum, the utility model does not have its its specific structure feature of machine room counter weight type hoistway special lift winch mat, really can reach every requirement of former creation purpose, and significantly improve the greatest practical effect of habit formula product, more not seeing has the product of same structure feature openly to sell, the real establishment important document that has met novel patent of obvious this case.

Claims

1. a no machine room counter weight type hoistway special lift winch comprises that mainly foundation mass, motor part, driving section, spiral disk body, brake device etc. constitute; It is characterized in that: and bury bearing underground by foundation mass, to support the driving section in foundation mass; And by driving section support fixation motor part and spiral disk body, be integral and connect transmission, make between motor part and the spiral disk body apart from reaching minimum; By the brake device that is arranged on the foundation mass, make motor part have brake mechanism, and form a winch in addition; And then significantly reduce single-piece length and set up the space, be beneficial to be installed in the hoistway.

2. no machine room counter weight type hoistway special lift winch according to claim 1 is characterized in that this driving section can be made of first driving section, second driving section, the 3rd driving section.

3. no machine room counter weight type hoistway special lift winch according to claim 2 is characterized in that, this first driving section, but be support fixation motor part and the driving section that connects transmission.

4. no machine room counter weight type hoistway special lift winch according to claim 2 is characterized in that, the 3rd driving section, but be the driving section of support fixation spiral disk body knot in parallel transmission.

5. no machine room counter weight type hoistway special lift winch according to claim 1 is characterized in that this brake device is to be provided with urgent manual unit, and draws the brake device that is installed on the outer operation of hoistway outward.

6. no machine room counter weight type hoistway special lift winch according to claim 5, it is characterized in that, this urgent manual unit, be when emergency, the of short duration release of brake device in the hoistway can be flowed the urgent manual unit that cage drops to the urgent manual unit of tram and make one by one.

7. a no machine room counter weight type hoistway special lift winch comprises that mainly foundation mass, motor part, driving section, spiral disk body, brake device etc. constitute; It is characterized in that:

8. no machine room counter weight type hoistway special lift winch according to claim 7, it is characterized in that this rotor part is made of rotor cover body, rotor, rotor is fixed in rotor cover body inside, and the rotor cover body has a brake outer rim, axis hole, several heat radiation slotted eye and groove; And this stator department, be by stator cover body, stator, and coil constituted, stator and coil stationary and are fixedly arranged on foundation mass in the stator cover body.

9. no machine room counter weight type hoistway special lift winch according to claim 7 is characterized in that this driving section can be made of first driving section, second driving section, the 3rd driving section; And rotor part is to be fixed in first driving section, and the spiral disk body then is fixed in the 3rd driving section.

10. no machine room counter weight type hoistway special lift winch according to claim 9, it is characterized in that, this first driving section, be by first transmission shaft, retainingf key, two preposition bearings, lining, and institute such as rearmounted bearing constitute, and the front end of first transmission shaft is provided with keyway, and the rear end is provided with groove; This second driving section, be by second transmission shaft, retainingf key, reducing gear, preposition bearing, and institute such as rearmounted bearing constitute, and the front end of second transmission shaft is provided with keyway and groove; The 3rd driving section, be by the 3rd transmission shaft, retainingf key, reducing gear, preposition bearing, and institute such as rearmounted bearing constitute, and the front end of the 3rd transmission shaft is provided with flange, keyway, reaches groove, the rear end then is provided with class's section and keyway.

11. no machine room counter weight type hoistway special lift winch according to claim 7 is characterized in that this electromagnetic valve is to be provided with fixed arm, and is pivoted with spiral arm, and supports the electromagnetic valve of spiral arm with the expansion link of electromagnetic valve.

12. no machine room counter weight type hoistway special lift winch according to claim 7 is characterized in that, this electromagnetic valve, be can establish a framework and cross-over connection on expansion link, on the framework and have slotted eye, and the unlikely electromagnetic valve that influences spiral arm rotation start.

13. no machine room counter weight type hoistway special lift winch according to claim 7 is characterized in that, this brake device is to be provided with a urgent manual unit, and draws the brake device that is installed on the outer operation of hoistway outward.

14. no machine room counter weight type hoistway special lift winch according to claim 13 is characterized in that this urgent manual unit is to be made of institutes such as pedestal, pull bar, cable wire fixer, adapter plate, protective tube, cable wire and fixed mounts; And cable wire is arranged on the framework, but and drawing expansion link.