Double-deck elevator arrangement

Abstract

The application discloses a double counterweight elevator device, which comprises a hoisting machine, a car, a first guide wheel set, a second guide wheel set, a first steel wire rope, a second steel wire rope, a first counterweight and a second counterweight. One end of the first steel wire rope is connected with the car, and the other end is connected with the first counterweight through the hoisting machine and the first guide wheel set. One end of the second steel wire rope is connected with the car, and the other end is connected with the second counterweight through the hoisting machine and the second guide wheel set. The first counterweight and the second counterweight are arranged on both sides of the car and are opposite to the movement direction of the car. When the car intersects with the two counterweights, the local pressure increase value in the space between the car and the first counterweight is equal to the local pressure increase value in the space between the car and the second counterweight. When the elevator car intersects with the counterweight, the car is subjected to impact forces with equal size and opposite direction generated by the air pressure increase between the two sides of the counterweight, and the two impact forces offset each other, so that the shaking problem generated when the elevator car intersects with the counterweight is improved.

Description

Technical Field

[0001] This invention relates to the field of elevators, specifically to a double counterweight elevator device. Background Technology

[0002] Currently, common elevator devices include Figure 1 As shown, the elevator car 11 and counterweight 21 are arranged in the elevator shaft and guided by the car guide rail and counterweight guide rail, respectively, and suspended by traction ropes wound on the traction machine. The car 11 and counterweight 21 are driven by the traction machine arranged in the machine room, and under the drive of the traction machine, they move in opposite directions vertically within the elevator shaft.

[0003] When the elevator car 11 and counterweight 21 meet (at the same height) within the elevator shaft, a large amount of air is forced into the narrow space between them. This causes a sudden increase in local pressure within the confined space, resulting in a momentary impact force on the car 11 and causing it to shake violently. Moreover, as the elevator speed increases, the impact when the elevator car and counterweight meet becomes greater, and the shaking of the car becomes more severe, thus affecting the comfort of the elevator ride. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a double counterweight elevator device, which can solve the problem of car shaking caused by the large impact force on the car when the car and counterweight intersect.

[0005] To solve the above-mentioned technical problems, the present invention provides a double counterweight elevator device, including a traction machine and a car, and also including a first guide wheel group, a second guide wheel group, a first wire rope, a second wire rope, a first counterweight, and a second counterweight;

[0006] One end of the first wire rope is connected to the car, and then connected to the first counterweight via the traction machine and the first guide wheel assembly;

[0007] One end of the second wire rope is connected to the car, and then connected to the first counterweight via the traction machine and the second guide wheel assembly;

[0008] The first counterweight and the second counterweight are arranged on both sides of the car and in the opposite direction of the car's movement. When the car intersects with the first counterweight and the second counterweight, the increase in local pressure in the space between the car and the first counterweight is the same as the increase in local pressure in the space between the car and the second counterweight.

[0009] Preferably, the first counterweight and the second counterweight have the same shape and weight, and the horizontal distance between the first counterweight and the car is equal to the horizontal distance between the second counterweight and the car.

[0010] Preferably, the first wire rope is wound around the traction machine and the first guide wheel assembly, with one end connected to the car and the other end connected to the first counterweight; the second wire rope is wound around the traction machine and the second guide wheel assembly, with one end connected to the car and the other end connected to the second counterweight.

[0011] Preferably, the traction machine is located above the car.

[0012] Preferably, the first guide wheel assembly is disposed between the traction machine and the first counterweight, and the second guide wheel assembly is disposed between the traction machine and the second counterweight.

[0013] Preferably, the first wire rope is wound around the traction machine and the first guide wheel assembly, with one end connected to the car and the other end connected to the first counterweight; the second wire rope is wound around the traction machine and the second guide wheel assembly, with one end connected to the car and the other end connected to the second counterweight.

[0014] Preferably, the horizontal distances between the first counterweight and the elevator shaft on its side, the horizontal distances between the second counterweight and the elevator shaft on its side, the horizontal distances between the first counterweight and the car, and the horizontal distances between the second counterweight and the car are all the same.

[0015] Meanwhile, another double counterweight elevator device provided by the present invention includes a traction machine and a car, and also includes a first guide wheel assembly, a second guide wheel assembly, a first wire rope, a second wire rope, a first counterweight, and a second counterweight;

[0016] One end of the first wire rope is connected to the car, and then connected to the first counterweight via the traction machine and the first guide wheel assembly;

[0017] One end of the second wire rope is connected to the first counterweight, and then connected to the second counterweight via the second guide wheel assembly;

[0018] The first counterweight and the second counterweight are arranged on the same side of the car, and the second counterweight is located between the first counterweight and the car. The second counterweight moves in the same direction as the car and is always at the same height. The first counterweight moves in the opposite direction to the second counterweight and the car.

[0019] Preferably, the traction machine is located above the car.

[0020] Preferably, the first guide wheel assembly is located above the first counterweight, and the second guide wheel assembly is located between the first guide wheel assembly and the first and second counterweights, and is located vertically between the first and second counterweights.

[0021] Preferably, the first wire rope is wound around the traction machine and the first guide wheel assembly, with one end connected to the car and the other end connected to the first counterweight; the second wire rope is wound around the second guide wheel assembly, with one end connected to the first counterweight and the other end connected to the second counterweight.

[0022] Preferably, the weight of the first pair of weights is greater than the weight of the second pair of weights.

[0023] Preferably, the weight difference between the first counterweight and the sum of the weights of the second counterweight and the car is equal to twice the car's rated load capacity CAP.

[0024] Preferably, the horizontal distance between the first counterweight and the second counterweight is greater than the horizontal distance between the second counterweight and the car.

[0025] Preferably, the horizontal distance between the first counterweight and the second counterweight is greater than the horizontal distance between the first counterweight and the elevator shaft on its side, and the horizontal distance between the car and the elevator shaft on its side.

[0026] Compared with the prior art, the beneficial technical effects achieved by the present invention are as follows:

[0027] First, the present invention symmetrically arranges two counterweights on both sides of the elevator car, controls the two counterweights to run in the opposite direction to the elevator car, and when the two counterweights meet the car, the space formed between the counterweights and the car is the same. This makes the local pressure in the two narrow spaces between the two counterweights and the car increase, and the impact force on the car is the same in magnitude but opposite in direction, so that the two impact forces cancel each other out and eliminate the shaking caused by the impact when the car meets the counterweights.

[0028] Secondly, the present invention provides two counterweights on one side of the elevator car, with one counterweight positioned between the other counterweight and the car. The car and the counterweight closest to the car move in the same direction and are at the same height. This ensures that the space between the car and the counterweight closest to the car remains basically constant, thereby ensuring that the counterweight furthest from the car will not impact the car when it intersects with the car. Attached Figure Description

[0029] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of an existing elevator system;

[0031] Figure 2 This is a schematic diagram of a double counterweight elevator device according to Embodiment 1 of the present invention;

[0032] Figure 3 This is a schematic diagram of a double counterweight elevator device according to Embodiment 2 of the present invention.

[0033] The annotations in the attached figures are explained as follows:

[0034] 11 is the car; 21 is the counterweight;

[0035] 1 is the elevator shaft; 2 is the traction machine; 3 is the first guide wheel assembly; 4 is the second guide wheel assembly; 5 is the first wire rope; 6 is the second wire rope; 7 is the first counterweight; 8 is the second counterweight; 9 is the car. Detailed Implementation

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Example 1

[0038] In this embodiment, the double counterweight elevator device is installed in elevator shaft 1, such as... Figure 2 As shown, it includes a traction machine 2, a car 9, a first guide wheel assembly 3, a second guide wheel assembly 4, a first wire rope 5, a second wire rope 6, a first counterweight 7, and a second counterweight 8;

[0039] One end of the first wire rope 5 is connected to the car 9, and then connected to the first counterweight 7 via the traction machine 2 and the first guide wheel group 3;

[0040] One end of the second wire rope 6 is connected to the car 9, and then connected to the second counterweight 8 through the traction machine 2 and the second guide wheel group 4;

[0041] The first counterweight 7 and the second counterweight 8 are arranged on both sides of the car 9 and opposite to the direction of movement of the car 9. When the car 9 intersects with the first counterweight 7 and the second counterweight 8, the local pressure increase value in the space between the car 9 and the first counterweight 7 is the same as the local pressure increase value in the space between the car 9 and the second counterweight 8.

[0042] Specifically, such as Figure 2 As shown, the first counterweight 7 and the second counterweight 8 have the same shape and weight, and the horizontal distance d1 between the first counterweight 7 and the car 9 is equal to the horizontal distance d2 between the second counterweight 8 and the car 9.

[0043] Furthermore, the traction machine 2 is located above the car 9. The first guide wheel assembly 3 is located between the traction machine 2 and the first counterweight 7, and the second guide wheel assembly 4 is located between the traction machine 2 and the second counterweight 8.

[0044] like Figure 2 As shown, the first wire rope 5 is wound around the traction machine 2 and the first guide wheel assembly 3, with one end connected to the car 9 and the other end connected to the first counterweight 7; the second wire rope 6 is wound around the traction machine 2 and the second guide wheel assembly 4, with one end connected to the car 9 and the other end connected to the second counterweight 8.

[0045] Preferably, the horizontal distances between the first counterweight 7 and the elevator shaft on its side, the horizontal distances between the second counterweight 8 and the elevator shaft on its side, the horizontal distances between the first counterweight 7 and the car 9, and the horizontal distances between the second counterweight 8 and the car 9 are all the same.

[0046] When the elevator car 9 simultaneously intersects with the first counterweight 7 and the second counterweight 8, a large amount of air is forced into the narrow space between the elevator car 9 and the first counterweight 7 and the second counterweight 8. This increases the local pressure within the narrow space between the elevator car 9 and the first counterweight 7, causing the elevator car 9 to experience a rightward impact force F1. Simultaneously, the increased local pressure within the narrow space between the elevator car 9 and the second counterweight 8 causes the elevator car 9 to experience a leftward impact force F2. Since the first counterweight 7 and the second counterweight 8 have the same shape and weight and are symmetrically arranged on the left and right sides of the elevator car 9, the two impact forces experienced by the elevator car 9 are equal in magnitude and opposite in direction, canceling each other out. This eliminates the swaying problem of the elevator car caused by the impact force when the elevator car 9 intersects with the counterweights 7 and 8.

[0047] Example 2

[0048] The double counterweight elevator device in this embodiment includes a traction machine 2 and a car 9, such as... Figure 3 As shown, it also includes a first guide wheel assembly 3, a second guide wheel assembly 4, a first wire rope 5, a second wire rope 6, a first counterweight 7, and a second counterweight 8;

[0049] One end of the first wire rope 5 is connected to the car 9, and then connected to the first counterweight 7 via the traction machine 2 and the first guide wheel group 3;

[0050] One end of the second wire rope 6 is connected to the first counterweight 7, and then connected to the second counterweight 8 via the second guide wheel assembly 4;

[0051] The first counterweight 7 and the second counterweight 8 are arranged on the same side of the car 9, and the second counterweight 8 is located between the first counterweight 7 and the car 9. The second counterweight 8 moves in the same direction as the car 9 and is always at the same height. The first counterweight 7 moves in the opposite direction to the second counterweight 8 and the car 9.

[0052] The traction machine 2 is located above the car 9.

[0053] The first guide wheel assembly 3 is located above the first counterweight 7, and the second guide wheel assembly 4 is located above the first counterweight 7 and the second counterweight 8, and below the first guide wheel assembly 3, and is located between the first counterweight 7 and the second counterweight 8 in the vertical direction.

[0054] like Figure 3 As shown, the first wire rope 5 is wound around the traction machine 2 and the first guide wheel group 3, with one end connected to the car 9 and the other end connected to the first counterweight 7; the second wire rope 6 is wound around the second guide wheel group 4, with one end connected to the first counterweight 7 and the other end connected to the second counterweight 8.

[0055] In this embodiment, the first counterweight 7 and the second counterweight 8 have different weights. Specifically, the weight of the first counterweight 7 is greater than the weight of the second counterweight 8. Preferably, the weight difference between the first counterweight 7 and the sum of the weights of the second counterweight 8 and the car 9 is equal to twice the rated load capacity CAP of the car 9.

[0056] Furthermore, the horizontal distance between the first counterweight 7 and the second counterweight 8 is greater than the horizontal distance between the second counterweight 8 and the car 9. This can reduce the impact of increased local pressure in the narrow space between the first counterweight 7 and the first counterweight 8 on the local pressure between the first counterweight 8 and the car 9.

[0057] Preferably, the horizontal distance between the first counterweight 7 and the second counterweight 8 is greater than the horizontal distance between the first counterweight 7 and the elevator shaft on its side, and the horizontal distance between the car 9 and the elevator shaft on its side.

[0058] When the first counterweight 7 intersects with the car 9 and the second counterweight 8, the local pressure in the narrow space between the first counterweight 7 and the second counterweight 8 increases instantaneously, causing the second counterweight 8 to be subjected to a rightward impact force. However, since the car 9 and the second counterweight 8 move in the same direction, the local pressure in the narrow space between the car 9 and the second counterweight 8 remains basically constant, thus ensuring that no swaying occurs when the first counterweight 7 intersects with the car 9.

[0059] The present invention has been described in detail above through specific embodiments. These embodiments are merely preferred embodiments of the present invention, and the present invention is not limited to the above-described implementation methods. Other equivalent substitutions and improvements made by those skilled in the art without departing from the principles of the present invention should be considered within the scope of the technology protected by the present invention.

Claims

1. A double counterweight elevator system, comprising a traction machine (2) and a car (9), characterized in that, It also includes the first guide wheel assembly (3), the second guide wheel assembly (4), the first wire rope (5), the second wire rope (6), the first counterweight (7), and the second counterweight (8); The first guide wheel assembly (3) is located above the first counterweight (7), and the second guide wheel assembly (4) is located between the first guide wheel assembly (3), the first counterweight (7), and the second counterweight (8), and is located between the first counterweight (7) and the second counterweight (8) in the vertical direction; The first wire rope (5) is wound around the traction machine (2) and the first guide wheel group (3), with one end connected to the car (9) and the other end connected to the first counterweight (7); The second wire rope (6) is wound on the second guide wheel assembly (4), with one end connected to the first counterweight (7) and the other end connected to the second counterweight (8); The first counterweight (7) and the second counterweight (8) are arranged on the same side of the car (9), and the second counterweight (8) is located between the first counterweight (7) and the car (9). The second counterweight (8) moves in the same direction as the car (9) and they are always at the same height. The first counterweight (7) moves in the opposite direction to the second counterweight (8) and the car (9).

2. The double counterweight elevator device according to claim 1, characterized in that, The traction machine (2) is located above the car (9).

3. The double counterweight elevator device according to claim 1, characterized in that, The weight of the first pair of weights (7) is greater than the weight of the second pair of weights (8).

4. The double counterweight elevator device according to claim 3, characterized in that, The weight difference between the weight of the first counterweight (7) and the sum of the weights of the second counterweight (8) and the car (9) is equal to twice the rated load capacity of the car (9).

5. The double counterweight elevator device according to claim 1, characterized in that, The horizontal distance between the first counterweight (7) and the second counterweight (8) is greater than the horizontal distance between the second counterweight (8) and the car (9).

6. The double counterweight elevator device according to claim 5, characterized in that, The horizontal distance between the first counterweight (7) and the second counterweight (8) is greater than the horizontal distance between the first counterweight (7) and the elevator shaft on its side, and the horizontal distance between the car (9) and the elevator shaft on its side.

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