CN209890046U

CN209890046U - Traction type elevator without counterweight

Info

Publication number: CN209890046U
Application number: CN201920018688.4U
Authority: CN
Inventors: 梁昌勇
Original assignee: Hepu Power Co ltd
Current assignee: Hepu Power Co ltd
Priority date: 2019-01-07
Filing date: 2019-01-07
Publication date: 2020-01-03
Anticipated expiration: 2029-01-07

Abstract

A traction type elevator without counterweight device is characterized in that n movable pulleys are respectively arranged at the top and the bottom of a car, n-1 fixed pulleys are arranged on an upper frame in addition to a traction machine, and n fixed pulleys are arranged on a lower support. Compared with the prior art, the utility model. The elevator has the advantages of low requirement on moment of a tractor, consistent number of rope grooves of a driving wheel and the number of steel wire ropes, short axial length and no noise existing in a reduction box device by adopting a traction mode.

Description

Traction type elevator without counterweight

Technical Field

The utility model relates to an elevator technique.

Background

In order to reduce the building cost, the space of the elevator shaft is increasingly narrow, and particularly, the shaft space of a villa elevator or a low-floor small-load elevator is very compact.

Patent documents: CN200480041019 discloses a technical solution of japanese patent application laid-open No. 2004-67365 as shown in fig. 1, wherein rope head assemblies 1 at both ends of a steel wire rope 5 are installed right above and right below a car 2, and in order to avoid interference between the rope head assemblies 1 and various devices at the top and bottom of a hoistway 6, a space L1 for arranging connecting members and a space L2 for arranging adjusting rope head assemblies 1 must be provided between the bottom of the hoistway 6 and the top of the elevator car 2 and the hoistway 6, so as to avoid collision interference between the rope head assemblies 1 above and below the car 2 and other parts.

Patent document CN200480041019 considers that this technique cannot effectively utilize the internal space of the hoistway, and there are special requirements in the hoistway height direction.

Patent document CN200480041019 proposes another technical solution on the basis of this technology: see fig. 2, the driving pulley 3 and the fixed pulley 4 are both arranged at the side of the car 2, the rope hitch 1 is respectively arranged above and below the side of the car 2, and the arrangement is staggered, the solution solves the problem of occupying space between the rope hitch and the car, but brings about another problem: the car carries partially, leads boots and the easy auto-lock that produces of guide rail to, still can make the car produce upset torque when tightening rope end combination, increase and lead and can rub between boots and the guide rail.

In addition, the two technical schemes have a serious problem: the total weight of the car and the load is not shared by the counterweight, so that the moment of the driving motor is very large, the volume and the total amount of the required driving motor are also very large, and the cost is very high.

In order to overcome the problems in the above technical solutions, patent documents CN201320135397, CN201020188759, and CN201320677247 all propose to use a reduction gear and a hoisting mode to lift a car, which can achieve no counterweight, and since the reduction gear is used, the torque requirement of a driving main machine can be reduced, and the motor volume and weight can be made very small, but the following problems exist: n = H/pi d =15/0.24 pi ≈ 20, in the hoisting machine mode, the wire rope is located in the spiral groove of the driving wheel, and if the hoisting height is large, the axial direction of the driving wheel is long, for example: promote high 15m, drive wheel pitch diameter 240mm, then the number of turns that the helicla flute encircles just is:

obviously, the axial dimension of the driving wheel can be very large, the cantilever is very long, the acceptance is unreasonable, and in addition, the comfort of the elevator is seriously influenced due to the noise of the gear box.

Chinese patent CN201410206603 proposes "an improved structure of a traction elevator without counterweight operation", and the technical scheme adopted by this structure is as follows: the elevator comprises a traction machine, a first pulley, a second pulley, a third pulley and a fourth pulley which are directly driven by a motor, wherein a track is arranged at the top of a hoistway, a sliding frame is arranged on the track in a sliding manner, the first pulley is rotatably arranged on the sliding frame, the second pulley is rotatably arranged at the top of a car, the third pulley and the fourth pulley are positioned on one side of the first pulley, the height of the third pulley is not lower than that of the first pulley, the fourth pulley is positioned at the bottom of the hoistway, one end of a steel wire rope is connected with the top of the car, the other end of the steel wire rope bypasses the first pulley, bypasses the traction machine, then bypasses the first pulley, then sequentially bypasses the third pulley and the fourth pulley and then is connected with the; or one end of the steel wire rope is fixed on the sliding frame, the other end of the steel wire rope firstly bypasses the second pulley on the top of the car, then bypasses the first pulley, then bypasses the traction machine, then bypasses the first pulley, and then sequentially bypasses the third pulley and the fourth pulley and then is connected with the bottom of the car, and the technical scheme has the following problems:

the first pulley on the upper portion of the shaft is installed below the upper portion rack, and the third pulley is installed above the upper portion rack, so that the occupied space in the height direction of the shaft is large.

Disclosure of Invention

The utility model aims at providing a space make full use of that can make well top and pit portion realizes the miniaturized nothing of elevator well and tows the formula elevator to heavy, and this elevator requires lowly to hauler moment to, take the mode of towing, drive wheel rope groove number and wire rope quantity are unanimous, and axial length is very short, the nothing of the noise that does not have the gear box device to heavily install the formula elevator.

The utility model is realized by arranging a lift car which can move up and down in an elevator shaft, arranging an upper frame at the top of the shaft, arranging a lower bracket at the bottom of the shaft, arranging n movable pulleys at the top of the lift car, correspondingly arranging n movable pulleys at the bottom of the lift car, arranging n-1 fixed pulleys on the upper frame besides a tractor, similarly arranging n fixed pulleys on the lower bracket, combining the n movable pulleys at the top of the lift car with the tractor on the upper frame and the n-1 fixed pulleys to form n pairs of upper rope winding wheel sets, combining the n movable pulleys at the bottom of the lift car with the n fixed pulleys on the lower bracket to form n pairs of lower rope winding wheel sets, combining and connecting one end of a steel wire rope with a rope head arranged on the upper frame, downwardly and sequentially passing the n pairs of upper rope winding wheel sets, downwardly and downwardly connecting with the fixed pulleys on the lower bracket through the side of the lift car, sequentially passing the n pairs of lower rope winding wheel sets and then combining and connecting with the rope head arranged on the lower bracket, n =1, 2, 3 or 4.

Therefore, according to the pulley principle, the labor-saving effect of 2 times, 4 times, 6 times and 8 times can be realized theoretically, and the purpose of reducing the volume and the weight of the tractor is achieved.

In the technical scheme, the positions of the traction machine and the fixed pulley which are arranged on the upper frame can be interchanged.

Advantageous effects

1. The rope head combination, the fixed pulley and the traction machine which are arranged on the upper frame are arranged in parallel, so that the height space of a well can be fully utilized;

2. the position of the pulley can be freely set, the steel wire rope inclination angle can be consistent, and the steel wire rope inclination angle are balanced with each other, so that the acting force of the rope winding system on the lift car is in the vertical direction, and the transverse acting force cannot be generated on the guide rail;

3. by utilizing the pulley labor-saving principle, 2 times, 4 times, 6 times or even more of labor saving can be realized, and the tractor is miniaturized;

4. there is no noise existing in the reduction gearbox device.

Drawings

Fig. 1 is a schematic diagram of the present invention when the number of movable pulleys n = 1;

fig. 2 is a schematic diagram of the present invention when the number of movable pulleys n = 2;

fig. 3 is a schematic view of the replacement position of the traction machine with the fixed sheave of fig. 2;

FIG. 4 is a view of a technical solution disclosed in CN200480041019 introduced in Japanese patent publication;

fig. 5 is a technical scheme diagram disclosed in CN 200480041019.

Detailed Description

The invention will now be described in further detail with reference to the accompanying drawings and examples:

example 1: as shown in fig. 1, a movable pulley 2 is respectively arranged at the top and the bottom of a car 1, a traction machine 4 is arranged on an upper frame 3, a fixed pulley 7 is arranged on a lower bracket 6, the movable pulley 2 at the top of the car 1 and the traction machine 4 form a pair of upper winding pulley sets, the fixed pulley 7 on the lower bracket 6 and the movable pulley 2 at the bottom of the car 1 form a pair of lower winding pulley sets, one end of a steel wire rope 8 is connected with a rope head combination 9 arranged on the upper frame 3, the steel wire rope 8 downwards rounds a movable pulley 2 of the pair of upper winding pulley sets fixed at the top of the car 1 and then rounds a traction wheel of the traction machine 4 arranged on the upper frame 3, the steel wire rope 8 rounds a traction wheel of the traction machine 4 on the upper frame 3 and then reversely and vertically downwards and connects with the fixed pulley 7 arranged on the lower bracket 6 through the car 1 side, the steel wire rope 8 rounds a fixed pulley 7 on the lower bracket 6 and then reversely and upwards, and rounds a movable pulley 2 at the bottom of the car 1 and.

Example 2: as shown in fig. 2, two movable pulleys 2 are respectively arranged at the top and the bottom of a car 1, a fixed pulley 5 is arranged on an upper frame 3 except a traction machine 4, two fixed pulleys 7 are arranged on a lower bracket 6, the two movable pulleys 2 at the top of the car 1 respectively form two pairs of upper rope winding wheel sets with the fixed pulley 5 and the traction machine 4 on the upper frame 3, the two fixed pulleys 7 on the lower frame 6 respectively form two pairs of lower rope winding wheel sets with the two movable pulleys 2 at the bottom of the car 1, one end of a steel wire rope 8 is connected with a rope head combination 9 arranged on the upper frame 3, the steel wire rope downwards rounds a first movable pulley 2 fixed at the top of the car 1 and reversely rounds the fixed pulley 5 arranged on the upper frame 3, rounds a second movable pulley 2 fixed at the top of the car 1 after rounding the fixed pulley 5 on the upper frame 3 and reversely rounds the traction wheel of the traction machine 4 arranged on the upper frame 3 again, the steel wire rope 8 winds around a traction sheave of a traction machine 4 on the upper frame 3, reversely, vertically and downwards winds around the side of the cage 1 and is connected with a first fixed pulley 7 mounted on the lower support 6, the steel wire rope 8 winds around a first movable pulley 2 at the bottom of the cage 1 upwards from the first fixed pulley 7 on the lower support 6 in the reverse direction, winds around a second fixed pulley 7 of a second pair of lower rope winding wheel sets mounted on the lower support 6 in the reverse direction after winding around the first movable pulley 2 at the bottom of the cage 1, winds around the second fixed pulley 7 on the lower support 6 and reversely winds around a second movable pulley 2 at the bottom of the cage 1, and winds around the second movable pulley 2 at the bottom of the cage 1 and is connected with a rope head combination 10 mounted on the lower support 6 in the reverse direction again.

Example 3: as shown in fig. 3, the positions of the traction machine 4 and the fixed sheave 5 mounted on the upper frame 3 in fig. 2 can be interchanged as shown in fig. 3.

Claims

1. Traction type elevator without counterweight device is characterized in that: a lift car which can move up and down is arranged in an elevator shaft, an upper frame is arranged at the top of the shaft, a lower support is arranged at the bottom of the shaft, n movable pulleys are arranged at the top of the lift car, n movable pulleys are correspondingly arranged at the bottom of the lift car, n-1 fixed pulleys are arranged on the upper frame besides a tractor, and similarly, n fixed pulleys are also arranged on the lower support, n movable pulleys at the top of the lift car, the tractor on the upper frame and n-1 fixed pulleys form n pairs of upper rope winding wheel sets, n movable pulleys at the bottom of the lift car and n fixed pulleys on the lower support form n pairs of lower rope winding wheel sets, one end of a steel wire rope is combined and connected with a rope head arranged on the upper frame, the steel wire rope is connected with the fixed pulleys on the lower support after sequentially passing the n pairs of upper rope winding wheel sets downwards, is connected with the fixed pulleys on the lower support through the side of the lift car, and then is combined and connected with a rope, n =1, 2, 3 or 4.

2. The traction elevator without counterweight according to claim 1, wherein the positions of the fixed sheave and the traction machine can be exchanged with each other.