CN201793301U

CN201793301U - Elevator tractor

Info

Publication number: CN201793301U
Application number: CN2010205302965U
Authority: CN
Inventors: 周红芳; 王焕萍
Original assignee: Zhejiang Xizi Forward Electrical Machinery Co Ltd
Current assignee: Zhejiang Xizi Forward Electrical Machinery Co Ltd
Priority date: 2010-09-13
Filing date: 2010-09-13
Publication date: 2011-04-13
Anticipated expiration: 2020-09-13

Abstract

An elevator tractor, which adopts a flat compound belt, sequentially comprises a brake (1), a rear bearing (8), a frame (2), a traction wheel (9), a spindle (3), a front bearing (7), a permanent magnet synchronous motor (4), a protective cover (6) and a encoder (5); traction grooves (10) matched with the compound belt are formed on the traction wheel (9); and the traction wheel (9) is directly arranged on the spindle (3) and fixed with the spindle (3) through the front bearing (7) and the rear bearing (8) on the two sides respectively to form an integrated structure and be fixedly mounted on the frame (2). Generally, the diameter of the traction wheel is larger than 80 mm, so that heavy load is realized through a small machine. The device has the advantages that the traction wheel and the spindle form an integrated structure, and a bearing support and the frame are integrated as a whole, so that the processing is simple and convenient, the operation smoothness of the system is high, the noise is low, the service life is long, and the structure is compact and novel; the traction has small diameter and small volume, so that the raw material and the running cost are reduced; and the elevator tractor is novel and unique, can directly replace the traditional geared tractor and fills the gap of the prior art.

Description

Elevator traction machine

Technical field

The utility model relates to a kind of elevator traction machine, and especially a kind of elevator traction machine that adopts flat composite band traction belongs to vertical Lift type elevator parts.

Background technology

The traction of vertical Lift type elevator realizes traction by towing machine and steel rope usually, traction sheave generally is installed in the electric machine main shaft outside, the diameter of traction sheave and the relation of elevator device are: for the diameter that increases traction sheave will increase the moment of torsion that load produces on traction sheave, guarantee that elevator running characteristics then needs to increase the output torque of motor, usually the torque rating of motor is directly proportional with volume, and the increase of motor torque must increase the physical dimension of motor, makes increased also corresponding with cost of volume of motor like this; In addition, the diameter of traction sheave and elevator play the relation of braking time, under the situation that rated speed of lift is determined, starting or braking time are directly proportional with the flywheel inertia of elevator device, and the flywheel inertia of elevator device is that adding up obtains by the flywheel inertia of each movable parts (with square being directly proportional of parts diameter), as traction sheave, motor rotor, brake disks etc., and traction sheave is a part and parcel wherein, thus the traction sheave diameter reduce can reduce elevator starter or braking time.In addition, the relation of traction sheave diameter and lock torque, after reducing the traction sheave diameter, required lock torque also decreases, and allows to reduce the diameter of brake disc, has reduced the flywheel inertia of brake disc like this, makes the total flywheel inertia of system further reduce again.In addition, the minimizing of traction sheave diameter can also be saved the cost of raw MAT'L and machine up.This shows that the traction sheave diameter should be as far as possible little.

Generally use the towing machine of rope traction/traction in the market, can be subjected to bigger flexure stress with the contacted one section steel rope of traction sheave, the adverse effect that steel rope is caused for limit flexion stress, among the standard GB 7588-2003 clearly the regulation: though the number of share of stock of steel rope what, the pitch circle diameter of traction sheave, pulley or reel should be less than 40mm with the ratio of the nominal diameter of suspension strop; The nominal diameter of steel rope is not less than 8mm.For this reason, the diameter of traction sheave can be less than 320mm.

Chinese patent by retrieval, the invention of relevant elevator traction machine aspect is many, but does not have the utility model to relate to a kind of elevator traction machine structure; The invention that relevant composite band replaces rope traction also has, but be on existing towing machine structure, to use the alternative steel rope of flat composite band simply substantially, do not realize the traction sheave diameter is reduced and raw-material reduction, more not including traction sheave and main shaft is integral structure.

The utility model content

The utility model relates to a kind of elevator traction machine, is that flat composite band traction of a kind of employing and traction sheave and main shaft are integral structure, and product structure is novel compact, and the traction sheave diameter reduces greatly, and raw-material reduction has reduced the operating cost of elevator simultaneously.The utility model has overcome the deficiencies in the prior art, has particularly filled up the blank of prior art, provides a kind of traction sheave diameter little, and volume is little, process easy, characteristics such as noise is little.Below in conjunction with Reference numeral concrete technology contents of the present utility model is described.

A kind of elevator traction machine, for adopting the elevator traction machine of flat composite band traction, it comprises successively, drg 1, rear bearing 8, support 2, traction sheave 9, main shaft 3, front bearing 7, permagnetic synchronous motor 4, protective case 6 and coder 5, wherein, on the described traction sheave 9 the traction groove 10 that matches with composite band is arranged; Described traction sheave 9 directly is arranged on the main shaft 3, and both sides are fixed by front bearing 7 and rear bearing 8 respectively and constituted integral structure and adorn solid on support 2.

Described elevator traction machine, the diameter of its traction sheave 9 are less than or equal to 1/4th of ordinary steel rope traction sheave diameter and realize little type heavy, and the diameter of traction sheave 9 is generally more than or equal to 80mm.

3～5 (but not being restricted to 3～5) arranged for the traction groove 10 of placing flat composite band on the described traction sheave 9, between two traction grooves 10 that face mutually, can separate by adding ring washer 11; The quantity of traction groove 10 is by the load-bearing decision of elevator load-carrying and composite band, and the shape of traction groove 10 and the shape of selected composite band match.

Described permagnetic synchronous motor 4 is uncanned cantilever design, is fixed on a side of support 2, and the stator core of permagnetic synchronous motor 4 is exposed outside.

Described coder 5 is installed with the coaxial homonymy of permagnetic synchronous motor, and links to each other with permagnetic synchronous motor 4 by protective case 6.

Described traction sheave 9 is an arch, or flute profile, perhaps other geometry form.

Described drg 1 is an axle braking device, and drg is fixed on the opposite side of support 2.

The utility model compared with prior art has the feature of tangible difference and prior art, specifically has: 1, adopt flat composite band traction/traction; 2, traction sheave and main shaft are integral structure, bearing seat and support one, process easy, system's running stability height, noise is little, long working life, compact conformation novelty; 3, the traction sheave diameter is little, and volume is little, processes easyly, and noise is little, has reduced the cost of raw material, has reduced the operating cost of elevator simultaneously; 4, required little, the time weak point of starting lock torque of motor, the drg volume is little; 5, the elevator traction machine linear velocity is little, and traction ratio was fit to make 1: 1, can directly replace existing geared machine, has filled up the blank of prior art, is a kind of novel unique elevator traction machine.

Description of drawings

Fig. 1 is structural representation of the present utility model (partly cuing open embodiment);

Fig. 2 is a traction sheave unitized construction scheme drawing among Fig. 1.

Indicate among the figure: 1, drg, 2, support, 3, main shaft, 4, permagnetic synchronous motor, 5, coder, 6, protective case, 7, front bearing, 8, rear bearing, 9, traction sheave, 10, the traction groove, 11, ring washer.

The specific embodiment

Further set forth technology contents of the present utility model and embodiment below in conjunction with accompanying

drawing

1,2.

Accompanying drawing 1 expression the utility model is at the elevator traction machine that adopts the composite band traction; comprise successively; drg 1, rear bearing 8, support 2, traction sheave 9, main shaft 3, front bearing 7, permagnetic synchronous motor 4, protective case 6 and coder 5; adopt composite band to replace steel rope, the diameter of traction sheave 9 can be accomplished little of 80mm.Because traction sheave 9 is the design formula structures that become one on main shaft 3 directly, and after the fixing of both sides, be installed in together and carry complete machine weight on the support 2 with front bearing 7 and rear bearing 8.According to the load-carrying of elevator and the load-bearing of composite band, can be designed to the traction groove 10 of varying number on the traction sheave 9, normally 3～5 of traction grooves 10, the width of traction sheave 9 and shape determine that according to the form of selected composite band traction sheave can be designed to multiple versions such as arch, flute profile.

Described permagnetic synchronous motor 4 is fixed on a side of support 2, is cantilever structure, and this structure does not have shell, directly stator core is exposed to link to each other with support 2 outside.

The utility model only is described in detail with regard to a most preferred embodiment of the present utility model; but can not be interpreted as the restriction of other modes that the utility model is implemented; everyly further improve and similar or identical scheme on the utility model basis, all being considered as is the scope that the utility model is asked for protection.

Claims

1. elevator traction machine, it is characterized in that: be a kind of elevator traction machine that adopts flat composite band traction, it comprises successively, drg (1), rear bearing (8), support (2), traction sheave (9), main shaft (3), front bearing (7), permagnetic synchronous motor (4), protective case (6) and coder (5), wherein, the traction groove (10) that matches with composite band is arranged on the described traction sheave (9); Described traction sheave (9) directly is arranged on the main shaft (3), and both sides are also adorned solid on support (2) by front bearing (7) and the fixing formation of rear bearing (8) integral structure respectively.

2. elevator traction machine according to claim 1 is characterized in that: the diameter of described traction sheave (9) is less than or equal to 1/4th of ordinary steel rope traction sheave diameter and has realized little type heavy, and the diameter of traction sheave (9) is usually more than or equal to 80mm.

3. elevator traction machine according to claim 1, it is characterized in that: have 3～5 on the described traction sheave (9) for the traction groove (10) of placing flat composite band, the quantity of traction groove (10) is by the load-bearing decision of elevator load-carrying and composite band, and available baffle plate (11) separates between the composite band; The shape of traction groove (10) and the shape of selected composite band match.

4. elevator traction machine according to claim 1 is characterized in that: described permagnetic synchronous motor (4) is uncanned cantilever design, is fixed on a side of support (2), and the stator core of permagnetic synchronous motor (4) is exposed outside.

5. elevator traction machine according to claim 1 is characterized in that: described coder (5) is installed with the coaxial homonymy of permagnetic synchronous motor, and links to each other with permagnetic synchronous motor (4) by protective case (6).

6. elevator traction machine according to claim 1 is characterized in that: described traction sheave (9) is an arch, or flute profile, perhaps other geometry form.

7. elevator traction machine according to claim 1 is characterized in that: described drg (1) is axle braking device, is fixed on a side of support (2).