CN202038789U - Traction device for freight elevator in 4:1 small machine room - Google Patents

Abstract

The utility model discloses a traction device of a 4:1 small machine room freight elevator, which comprises a side guide wheel 1, a counterweight wheel 2, a traction wheel 3, a traction rope 4, a counterweight body 5, a car top wheel 6, In the car 7, the number of the side guide wheels 1 is 3, one of which is located between the counterweight wheels 2, and two of them are horizontally arranged side by side and are located between the car top wheels 6; It includes a guide wheel 3A, and the guide wheel 3A is located between the traction wheel 3 and the car top wheel 6; one end of the traction rope 4 passes through the traction wheel 3, the guide wheel 3A, and the car top wheel in turn. The top wheel 6, the side guide wheel 1 to the fixed rope end M; the other end of the traction rope 4 passes through the traction wheel 3, the counterweight wheel 2, the side guide wheel 1 to the fixed rope end N in sequence. The utility model solves the problems of running deviation and abnormal wear of one side guide shoe, and is widely used in 4:1 traction elevators.

Description

4:1 traction device of freight elevator with small machine room

technical field

The utility model belongs to the field of elevators, in particular to a traction system of an elevator, in particular to a traction device of a 4:1 small machine room cargo elevator. the

Background technique

For the 4:1 traction small machine room freight elevator, the existing traction system design is shown in Figure 1. As shown in Figure 1, it includes a side guide wheel 1, a counterweight wheel 2, a traction wheel 3, a traction rope 4, a counterweight body 5, a car top wheel 6, and a car 7, and one end of the traction rope 4 passes through the The traction sheave 3, the car top wheel 6, the side guide wheel 1 to the fixed rope end M; the other end of the traction rope 4 passes through the traction sheave 3, the counterweight wheel 2, the side guide wheel 1 to the fixed rope end in sequence N. the

The defects of this design are: (1) The diameter of the traction sheave 3 is usually smaller than the distance from the car top sheave 6 to the counterweight wheel 2, which will cause the traction rope between the car top sheave 6 and the traction sheave 3 4 is inclined, which is not conducive to the installation and operation of the elevator; (2) due to the inclination of the traction rope 4 between the car top wheel 6 and the traction sheave 3, as the car 7 moves up and down, the inclination of the traction rope 4 in this section The angle will change, causing the traction force to change, and when the positioning of the rope head M on the side of the car is not accurate enough, the car 7 will deviate due to the unequal horizontal components of the pulling force of the traction rope on both sides, which will lead to Abnormal wear on one side guide shoe. the

Contents of the invention

Aiming at the deficiencies of the current technology, the utility model proposes a new design scheme of the traction system, that is, the traction device of the 4:1 small machine room freight elevator. the

The traction device of a 4:1 small machine room freight elevator includes a side guide wheel 1, a counterweight wheel 2, a traction wheel 3, a traction rope 4, a counterweight body 5, a car top wheel 6, and a car 7. The number of side guide wheels 1 is 3, one of which is located between the counterweight wheels 2, and two of them are horizontally arranged side by side and are located between the car top wheels 6; it also includes guide wheels 3A, the The guide pulley 3A is located between the traction sheave 3 and the car top pulley 6; one end of the traction rope 4 passes through the traction pulley 3, the car top pulley 6, the guide pulley 3A, and the side guide pulley in turn. 1 to the fixed rope end M; the other end of the traction rope 4 passes through the traction sheave 3, the counterweight wheel 2, and the side guide wheel 1 to the fixed rope end N in sequence. the

In order to realize the purpose of the invention of the utility model and achieve a small machine room elevator, the traction sheave 3 of the utility model is driven by a permanent magnet synchronous gearless traction machine, which is usually used in a passenger elevator. It is not used in freight elevators, especially in large-tonnage freight elevators, because it is a common component in elevators, especially passenger elevators, so it will not be described in detail, and it is not shown in the accompanying drawings of this specification. the

Since a side guide pulley 1 is added on the load-bearing beam of the machine room above the space between the two car top pulleys 6, that is, the original one becomes two, so that the traction ropes from the two car top pulleys 6 to the machine room are all Vertical; between the car top wheel 6 and the traction sheave 3, a guide wheel 3A is added to make the traction rope 4 between the guide wheel 3A and the car top wheel 6 vertical. Therefore, the beneficial effect of the utility model is that: as the car 7 moves up and down, the traction wrap angle is fixed, so as to facilitate the installation of the elevator and the design and calculation of the traction force, and also solve the problem of running deviation and abnormality of one side guide shoe. The problem of wear and tear. the

Due to the above beneficial effects, the utility model is widely used in 4:1 traction elevators. the

Description of drawings

Fig. 1 is the structural representation of prior art traction system;

Fig. 2 is a structural representation of the utility model. the

Identification description: 1—side guide wheel; 2—counterweight wheel; 3—traction wheel; 3A—guiding wheel; 4—traction rope; 5—counterweight; 6—car top wheel; 7— car. the

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail. the

As shown in Figure 2, the traction device of a 4:1 small machine room freight elevator includes side guide pulley 1, counterweight pulley 2, traction pulley 3, traction rope 4, counterweight body 5, car top pulley 6, car In the compartment 7, the number of the side guide wheels 1 is 3, one of which is located between the counterweight wheels 2, and two of them are horizontally arranged side by side and located between the car roof wheels 6; it also includes The guide wheel 3A, the guide wheel 3A is located between the traction wheel 3 and the car top wheel 6; one end of the traction rope 4 passes through the traction wheel 3, the guide wheel 3A, the car roof The wheel 6, the side guide wheel 1 to the fixed rope end M; the other end of the traction rope 4 passes through the traction wheel 3, the counterweight wheel 2, the side guide wheel 1 to the fixed rope end N in sequence. the

The ones similar to the "grounding" mark in Figure 2 are fixed rope heads. There are 2 fixed rope ends in the figure, which are respectively marked as M and N. Since they are common settings for elevators, they will not be described in detail. the

The power unit of the traction device is driven by a permanent magnet synchronous gearless traction machine, which is not the main point of the invention of the present utility model. It is not shown in Fig. 2 and will not be described in detail. the

About the beneficial effects and application occasions of the present utility model, they are basically the same as the foregoing description, so no more details are given. the

Claims (2)

1.4:1 the drag device of small room cargo lift, comprise side guide wheel (1), counterweight wheel (2), traction sheave (3), hoist ropes (4), counterweight body (5), crosshead sheave (6), car (7), it is characterized in that: the number of described side guide wheel (1) is 3, wherein 1 is positioned between the described counterweight wheel (2), wherein 2 horizontal Tile settings and being positioned between the described crosshead sheave (6); Also comprise track adjusting wheel (3A), described track adjusting wheel (3A) is positioned between described traction sheave (3) and the described crosshead sheave (6); Described hoist ropes (4) one ends successively via traction sheave (3), track adjusting wheel (3A), crosshead sheave (6), side guide wheel (1) to fixing fag end M; The other end of described hoist ropes (4) is taken turns extremely fixedly fag end N of (2), side guide wheel (1) via traction sheave (3), counterweight successively.

2. the drag device of 4:1 small room cargo lift according to claim 1 is characterized in that: described traction sheave (3) is driven by permanent-magnet synchnorous gearless dragging machine.

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