CN201321324Y

CN201321324Y - Material elevator

Info

Publication number: CN201321324Y
Application number: CNU2008202019568U
Authority: CN
Inventors: 徐继鸿; 吴金华
Original assignee: HESHAN HELONG ELECTRO-MECHANICAL Co Ltd
Current assignee: Guangdong Heshan Xinli Stripsteel Co., Ltd.
Priority date: 2008-10-17
Filing date: 2008-10-17
Publication date: 2009-10-07
Anticipated expiration: 2018-10-17

Abstract

The utility model discloses a material elevator, which comprises a tractor, a hoist rope, a material box and a weight counterbalance body, wherein the tractor is connected with the material box and the weight counterbalance body through the hoist rope; the material box and the weight counterbalance body are mounted on an elevator bracket; the tractor is of a permanent-magnetic gear-free tractor; the tractor consists of a driving sheave which is connected with the hoist rope, a permanent-magnetic brushless direct-current low-speed large-torque motor and a brake device; and the output end of the permanent-magnetic brushless direct-current low-speed large-torque motor is connected with the driving sheave. The tractor of the material elevator is of a permanent-magnetic gear-free tractor, and the output end of the permanent-magnetic brushless direct-current low-speed large-torque motor is directly connected with the driving sheave, and the reduction output is free from a gear box, so that the material elevator has simple structure and reliable application as well as convenient maintenance, and is free from influencing the normal transportation of the material, thereby reducing the application cost, and improving the work efficiency.

Description

Material elevator

Technical field

The utility model relates to a kind of material lift and conveyer tool, particularly a kind of material elevator that adopts the permanent magnetism gearless machine.

Background technology

The lifting technology of present material elevator has two kinds of forms, a kind of is to drag with rack-and-gear or screw pair, another kind is to drag with the friction force that produces between steel rope and the traction sheave, no matter but adopt which kind of mode, all be unable to do without reduction gear apparatus, its complex structure, troublesome maintenance.

In addition, in elevator market, the manufacturing of gearless machine and be applied in comparatively general both at home and abroad.But, well-known this gearless machine motor still belongs to traditional multipole synchronous dynamo, and its synchronous speed is relevant with motor pole number, the structure relative complex, productive costs is higher, and outer controller carries out speed control to it in application, only limits in market fast and express elevator, and slower elevators, material elevator towing machine still adopt gear transmission mode, it uses complex structure, can not effectively reduce use cost, has been difficult to satisfy the needs that economize on resources now.

For above-mentioned condition, mainly be in present Design of PM Motor theory and practice, to exist technology prejudice.

At first, normally adopt the multiple-grooved multi-polar structure for the low speed high torque motor that is used on the equipment such as elevator traction machine, as being CN1324139A at publication number, open day is November 28 calendar year 2001, name is called in " direct drive synchronous dragger with Nd-Fe-B permanent magnetic rotor ", for realizing low speed, big torque work, its motor has partly adopted the multipole outer-rotor structure of 20 utmost points.Structure is relatively simply lacked the few utmost point of groove, and then only to be used for power be following small-sized, miniature motor of 500W all the time, as publishing in December, 2006, in the 26th volume, the 24th phase " Proceedings of the CSEE ", in " research of small-sized brushless DC motor vibration and noise " literary composition, introduced in the design of small-sized brushless DC motor, the normal 9 groove structures that adopt of stator, the number of poles of p-m rotor can be considered 6 utmost points, 8 utmost points, 10 utmost points, 12 electrode structures.From as can be known above-mentioned, the low speed high torque motor normally adopts the multiple-grooved multi-polar structure of structure relative complex, and structure is relatively simply lacked the few electrode structure of groove generally only to be used for power is following small-sized, miniature motor of 500W, is not use on 500W or the low speed high torque motor more than the 500W and attempt at power.

In addition, in the design theory of motor, its rotating speed of motor generally is to adopt following formula rotating speed=f * 60/p, wherein, f is the working current frequency, and p is a number of poles, as can be known, synchronous speed is relevant with the number of poles of motor from this formula, and rotating speed and number of poles are inversely proportional to, promptly need to design the magneto-electric machine of low-speed running, then should adopt multi-polar structure, thereby as can be known, in existing design, design low-tach motor, generally adopt multi-polar structure, and few electrode structure is not used on the slowspeed machine.

From above content as can be known, owing to there is above-mentioned technology prejudice, so far, the few electrode structure of few groove does not appear at the index of permanent of low speed high torque and makes.

Summary of the invention

In order to overcome the deficiencies in the prior art, the material elevator that the purpose of this utility model is to provide a kind of simple in structure, dependable performance, energy savings and is convenient to keep in repair.

The technical scheme that its technical matters that solves the utility model adopts is:

Material elevator, comprise towing machine, hoist ropes, hopper and balance weight body, towing machine connects hopper and balance weight body by hoist ropes, hopper and balance weight body are installed on the frame, this towing machine is the permanent magnetism gearless machine, this machine is made up of the traction sheave that is used to connect hoist ropes, DC permanent-magnetic brushless low-speed big motor and brake equipment, and the mouth of DC permanent-magnetic brushless low-speed big motor is connected with traction sheave.

Further, as preferred version, described DC permanent-magnetic brushless low-speed big motor is the few electrode structure of few groove, and the mounting structure of motor is outer rotor or internal rotor, and it is simple in structure, use is reliable.

The beneficial effects of the utility model are: because the towing machine of this material elevator is the permanent magnetism gearless machine, the mouth and the traction sheave direct connection of the DC permanent-magnetic brushless low-speed big motor that is adopted, need not to adopt the gear case output of slowing down, it is simple in structure, use is reliable, towing machine device simple in structure, thereby in the future easy to maintenance of material elevator, do not influence user's normal mass transport, reduce use cost, improved work efficiency.

Further, adopt the few electrode structure of few groove, simple in structure, low cost of manufacture, efficient is high and energy-conservation obviously, can realize the work of low speed high torque, being specially adapted to replace the gear transmission towing machine and carrying out the single speed driving, is the important breakthrough that the slowspeed machine drive technology uses on material elevator.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is an integral structure scheme drawing of the present utility model;

Fig. 2 is the structural representation of towing machine of the present utility model;

Fig. 3 is the structural representation of motor 9 grooves 8 electrode structures of the present utility model;

Fig. 4 is the structural representation of motor 9 grooves 10 electrode structures of the present utility model.

The specific embodiment

With reference to Fig. 1, Fig. 2, material elevator of the present utility model, comprise towing machine 1, hoist ropes 2, hopper 3 and balance weight body 4, towing machine 1 connects hopper 3 and balance weight body 4 by hoist ropes 2, hopper 3 and balance weight body 4 are installed on the elevator platform 5, this towing machine 1 is the permanent magnetism gearless machine, is made up of the traction sheave 10 that is used to connect hoist ropes 2, DC permanent-magnetic brushless low-speed big motor 20 and brake equipment 30, and the mouth of DC permanent-magnetic brushless low-speed big motor is connected with traction sheave.

Wherein, DC permanent-magnetic brushless low-speed big motor 11 can be multiple-grooved multi-polar structure and the few electrode structure of few groove.

As preferred version, with reference to Fig. 3 and Fig. 4, DC permanent-magnetic brushless low-speed big motor of the present utility model is the few electrode structure of few groove, the mounting structure of motor is outer rotor or internal rotor, that this structure has is simple in structure, low cost of manufacture, efficient is high and energy-conservation tangible characteristics, specifically can be stator 9 grooves that adopt as shown in Figure 3, the electric machine structure of rotor 8 utmost points, also can adopt stator 9 grooves as shown in Figure 4, the electric machine structure of rotor 10 utmost points, the motor of said structure all have good electromagnetic torque characteristic.In addition, rotor permanent magnet can be built-in radial formula or tangential.

With reference to Fig. 2, Fig. 3 and Fig. 4, described DC permanent-magnetic brushless low-speed big motor specifically is made up of stator 21, rotor 22, winding 23, permanent-magnet steel 24, end cap 25, bearing 26 and transmission shaft 27, stator 21, rotor 22, winding 23 and permanent-magnet steel 24 are installed on the frame 28 by end cap 25, rotor 22 is connected with transmission shaft 27, transmission shaft 27 is installed on the end cap 25 by bearing 26, and the brake wheel 31 of traction sheave 10 and brake equipment is installed in the two ends of the transmission shaft 27 of DC permanent-magnetic brushless low-speed big motor 20 respectively.

In addition, surpass predetermined stroke and when being obstructed, the traction driving action stops, thereby can guarantee the safety of the equipment and the person when the hopper of material elevator or counterweight.

The technical parameter of the utility model material elevator can be as follows:

Nominal payload: Q=8000Kg

Command speed V=1m/s

The traction ratio k=2 of wiring system

Traction sheave diameter D=32mm

Wirerope diameter and radical Φ 8 * 4

Characteristics of the present utility model are that the towing machine of this material elevator adopts DC permanent-magnetic brushless low-speed big motor, for the gearless structure, need not coupler, towing machine device simple in structure; The amount velocity-stabilization that traction drives, energy consumption is low, easily forms series; Driving efficiency height, energy-conservation, noise is low, is convenient to maintenance; Supporting special purpose driver improves performance, and cost-cutting improves serviceability.

Certainly, the utility model is except above-mentioned embodiment, and other equivalent technical solutions also should be within its protection domain.

Claims

1, material elevator, comprise towing machine, hoist ropes, hopper and balance weight body, towing machine connects hopper and balance weight body by hoist ropes, hopper and balance weight body are installed on the frame, it is characterized in that: this towing machine is the permanent magnetism gearless machine, this machine is made up of the traction sheave that is used to connect hoist ropes, DC permanent-magnetic brushless low-speed big motor and brake equipment, and the mouth of DC permanent-magnetic brushless low-speed big motor is connected with traction sheave.

2, material elevator according to claim 1 is characterized in that: described DC permanent-magnetic brushless low-speed big motor is the few electrode structure of few groove, and the mounting structure of motor is outer rotor or internal rotor.

3, material elevator according to claim 2 is characterized in that: described electric machine structure is stator 9 grooves, rotor 8 utmost points.

4, material elevator according to claim 2 is characterized in that: described electric machine structure is stator 9 grooves, rotor 10 utmost points.

5, according to claim 2,3 or 4 described material elevators, it is characterized in that: rotor permanent magnet is built-in radial formula or tangential.

6, according to claim 1,2,3 or 4 described material elevators, it is characterized in that: described DC permanent-magnetic brushless low-speed big motor is that stator, rotor, winding, permanent-magnet steel, end cap, bearing and transmission shaft are formed.

7, material elevator according to claim 6 is characterized in that: the brake wheel of traction sheave and brake equipment is installed in the two ends of DC permanent-magnetic brushless low-speed big drive axle of motor respectively.