CN202829217U - Rear counterweight of a goods lift free of machine room - Google Patents

Abstract

The utility model discloses a rear counterweight device of a machine room-less freight elevator, which comprises a traction wheel (1), a counterweight wheel (2), a car bottom wheel (3), a car (4), a guide wheel (5), The side guide wheels (6), the car door (7), the counterweight (8), the traction rope (9), the bottom wheel of the car (3) are located at the bottom of the car (4), and the car door (7) is set on On the front side of the car (4), the counterweight wheel (2) is located above the counterweight (8), both of which are located at the rear side of the car (4); ) to the fixed point (M) of the traction rope via the car bottom wheel (3) and the side guide wheel (6), and the other side from the traction wheel (1) via the guide wheel (5), the counterweight wheel (2), the side From the guide wheel (6) to the fixed point (N) of the traction rope, compared with the prior art, the car and the car door of the utility model can be set as wide as possible; the operation is more stable, and the utility model is widely used in In the machine room freight elevator.

Description

Rear counterweight device of machine room-less freight elevator

technical field

The utility model belongs to the field of elevators, in particular to a traction system of a freight elevator, in particular to a counterweight device of a machine-roomless freight elevator.

Background technique

For machine-room-less freight elevators, it is usually a side counterweight device, and the bottom wheel of the car is used to wind the rope, so that the required height of the top floor of the hoistway is the minimum when the main engine is placed on top. As shown in Figure 1, it is a known technical solution of the side counterweight device of machine room-less freight elevator, which includes counterweight wheel 2, car bottom wheel 3, car 4, car door 7, counterweight body 8, car bottom There are usually 4 wheels 3 and they are all located at the bottom of the car 4. There are 2 counterweight wheels 2 and the counterweight body 8 below them forms an elevator counterweight system. The car door 7 is arranged on the front side of the car 4. , Counterweight wheel 2 and counterweight body 8 are positioned at the left side of car 4, promptly form so-called side counterweight device. The disadvantage of this design is that when the width of the elevator shaft is limited and the car is required to have a larger width, and the car is opened on one side, the side counterweight device will occupy the narrow width space, making Cars and car doors cannot be set as wide as possible, which cannot meet the psychological needs of users and weaken the market competitiveness of products.

Utility model content

Aiming at the deficiencies of the current technology, the utility model proposes a new rear counterweight device for a freight elevator without a machine room, which not only can solve the defects of the prior art, but also has many other beneficial effects.

The rear counterweight device of machine room-less freight elevator includes traction sheave 1, counterweight sheave 2, car bottom wheel 3, car 4, guide wheel 5, side guide wheel 6, car door 7, counterweight body 8, traction sheave Draw rope 9, said car bottom wheel 3 is located at the bottom of said car 4, said car door 7 is arranged on the front side of said car 4, said counterweight wheel 2 is located at said Above the counterweight body 8, the two form an elevator counterweight system, and the counterweight wheel 2 and the counterweight body 8 are located at the rear side of the car 4; one side of the traction rope 9 is self-tracting Traction sheave 1 passes through car bottom wheel 3 and side guide wheel 6 to the fixed point M of the traction rope, and the other side goes from traction sheave 1 to fixed point N of the traction rope via guide wheel 5, counterweight wheel 2, and side guide wheel 6 . the

All components listed above are common configurations of elevators, and their structures and functions will not be described in detail here. It should be noted that the so-called car door, commonly known as the elevator door, is the passage for passengers or goods to enter the elevator car, and its location is defined as the front side of the car, and its opposite position , is the rear side of the car, and here is the position where the counterweight system of the present utility model is set.

In order to make the whole traction system run smoothly, usually, four car bottom wheels 3 are arranged in groups of two, and they are all distributed at the four corners of the bottom of the car 4. Because the car bottom wheels are located at the front and rear ends of the car bottom, there During loading and unloading, due to the effect of the traction rope, the force of the guide shoe on the guide rail due to the unbalanced load of the car can be greatly reduced.

Due to the above settings, the utility model achieves the purpose of the invention, and its beneficial effects are: (1) When the width of the elevator shaft is limited, and at the same time the width of the car is required to be large, and the car is opened on one side, the rear The counterweight device will not occupy the already narrow width space, so that the car and car door can be set as wide as possible to meet the psychological needs of users and improve the market competitiveness of the product; (2) stable operation. There are 4 car bottom wheels 3, and they are all distributed at the four corners of the bottom of the car 4. During cargo loading and unloading, due to the effect of the traction rope, the force exerted by the guide shoe on the guide rail due to the unbalanced load of the car can be greatly reduced. .

Due to the above beneficial effects, the utility model is widely used in machine room-less freight elevators, especially large-tonnage freight elevators.

Description of drawings

Fig. 1 is a schematic cross-sectional structure diagram of a side counterweight device in the prior art;

Fig. 2 is a schematic cross-sectional structure diagram of the utility model;

Fig. 3 is a schematic diagram of the winding structure of an embodiment of the present invention.

Detailed ways

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

As shown in Figure 2, the rear counterweight device of the machine-room-less freight elevator includes a counterweight wheel 2, a car bottom wheel 3, a car 4, a car door 7, and a counterweight 8, and the car bottom wheel 3 is provided with four And all are positioned at the bottom four corners of car 4, counterweight 2 has 2 and is positioned at the counterweight body 8 below it and forms elevator counterweight system, and car door 7 is arranged on the front side of car 4, and counterweight 2 And counterweight body 8 is positioned at the rear side of car 4, promptly forms so-called rear counterweight device. The so-called car door, which is usually called the elevator door, is the passage for passengers or goods to enter the elevator car. We define its location as the front side of the car and the opposite side of the car. The location is the rear side of the car.

As shown in FIG. 3 , it is a schematic diagram of a winding structure of an embodiment of the present invention. It includes a traction wheel 1, a counterweight wheel 2, a car bottom wheel 3, a car 4, a guide wheel 5, a side guide wheel 6, a car door 7, a counterweight 8, and a traction rope 9. The car bottom wheels 3 are provided with four, which form a so-called 4 to 1 traction structure, and they are in groups of two, all located at the four corners of the bottom of the car 4 (the bottom surface of the car is usually rectangular) . The car door 7 is arranged on the front side of the car 4, and is a passage for passengers or goods to enter the car. The counterweight wheel 2 is located above the counterweight body 8, and the two form an elevator counterweight system. In order to make the elevator run more smoothly, the number of counterweight wheels 2 is 2, which are symmetrically distributed on the top of the counterweight body 8 . The counterweight wheel 2 and the counterweight body 8 are located at the rear side of the car 4; the traction rope 9 is on one side from the traction sheave 1 to the traction rope via the car bottom wheel 3 and the side guide pulley 6 Fixed point M, the other side from the traction sheave 1 to the fixed point N of the traction rope via the guide wheel 5, the counterweight wheel 2, and the side guide wheel 6.

Claims (2)

1. Rear counterweight device of machine room-less freight elevator, including traction wheel (1), counterweight wheel (2), car bottom wheel (3), car (4), guide wheel (5), side guide wheel (6), car door (7), counterweight (8), traction rope (9), the car bottom wheel (3) is located at the bottom of the car (4), the car The door (7) is set on the front side of the car (4), and the counterweight wheel (2) is located above the counterweight body (8), and the two form an elevator counterweight system, which is characterized in that: The counterweight wheel (2) and the counterweight body (8) are located at the rear side of the car (4); one side of the traction rope (9) passes from the traction sheave (1) Car bottom wheel (3) and side guide wheel (6) to the fixed point (M) of the traction rope, and the other side from the traction wheel (1) via guide wheel (5), counterweight wheel (2), and side guide wheel (6) to the traction rope fixing point (N). 2. The rear counterweight device of a machine-room-less freight elevator according to claim 1, characterized in that: the number of said car bottom wheels (3) is usually set to 4, and they are arranged in groups of two.

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