Additional counterweight type traction driving elevator

Abstract

The utility model discloses an additional counterweight type traction driving elevator which comprises an elevator car, an elevator host traction wheel, a fixed guide wheel and / or a movable pulley type guide wheel, a fixed redirection guide wheel, a main counterweight device, an additional counterweight device, a main steel wire rope and an additional steel wire rope. The additional counterweight device and the main counterweight device which are independent from each other are arranged, so that the function of balancing the weight of all or part of the dead weight of the elevator car for energy conservation is realized, the design position is not limited, the space of the shaft can be fully utilized according to the specific condition of the shaft when the elevator is designed, and the design cost is reduced. And the problem that a counterweight device is too large can be solved. The counterweight device is also suitable for the transformation project of increasing the rated load capacity of the freight elevator, and the transformation cost of the original counterweight device can be greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator industry, in particular to an additional counterweight type traction drive elevator. Background Art

[0002] According to the definition of "Safety Specifications for Elevator Manufacturing and Installation Part 1: Passenger Elevators and Freight Elevators" GB / T 7588.1-2020, a traction-driven elevator is an elevator driven by the friction between the suspended wire rope and the traction sheave groove of the driving main engine. Figure 1 As shown, the driving wheel of the main machine 100 is a traction wheel 101 , and the traction wheel 101 has a plurality of specially designed wire rope grooves 102 . Figure 2 The figure shows a traction-driven elevator with a traction ratio of 1:1. The hoisting rope of the elevator is a well-known elevator-specific steel wire rope 103. One end of the steel wire rope 103 is connected to the elevator car 104 (the elevator car is a box-shaped device for carrying people or goods), and its end point is a steel wire rope end 105 fixed on the elevator car side. The steel wire rope 103 must pass through the elevator main machine traction wheel 101 in the middle, and the other end is connected to the counterweight device 106, and its end point is a steel wire rope end 107 fixed on the counterweight side. The counterweight device 106 is a device for balancing all or part of the dead weight of the car for energy saving. The counterweight device is composed of counterweight blocks piled up in the counterweight frame of the steel structure to facilitate the adjustment of the balancing weight. The elevator main engine (also called traction machine) connected to the elevator main engine traction sheave 101 is a powered mechanical device. When the elevator main engine drives the elevator main engine traction sheave 101 to rotate forward or reverse, the elevator car 104 and the counterweight device 106 located on both sides of the elevator main engine traction sheave 101 move upward or downward. Regardless of whether the traction ratio is 1:1, 2:1, 4:1, or other traction ratios, the principle is inseparable from the fact that both sides of the elevator main engine traction sheave 101 must be connected to the elevator car 104 and the counterweight device 106, respectively, as the starting point and end point of the wire rope 103. In addition, there is a fixed guide wheel 108. In traction drive elevators with traction ratios of 2:1 and 4:1, respectively as follows Figure 3 , 4 As shown, there is also a movable pulley guide wheel 109 that moves up and down with the elevator car 104 or the counterweight device 106. Figure 2 -4 It can be seen that, whether it is a fixed guide wheel or a movable pulley guide wheel, their guiding function as the wire rope traction ratio is based on the transmission principle of traditional machinery. Figure 3 and Figure 4 Only the drag ratio and Figure 1 Although they are different, their working principles are basically the same, and they are all traditional traction-driven elevators.

[0003] Traditional traction-driven elevators all use a single counterweight structure. When the elevator shaft is irregular, for example, when the cross-section of the parallel lanes is not a rectangle or a square but an irregular polygon, it is difficult to reasonably utilize the shaft space while meeting the load requirements, which greatly limits the elevator design.

[0004] In addition, as we all know, traction-driven elevators are divided into two categories: passenger elevators and freight elevators. When the rated load of the designed freight elevator increases, the elevator car and counterweight device will also become larger and larger. The conventional design method is to increase the traction ratio. According to the principle of the movable pulley, the traction ratio increases, and the corresponding main engine power can withstand a larger load, but the speed will also decrease. However, if a large-tonnage freight elevator still uses a single counterweight device, the counterweight device will become larger and larger. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model aims to provide an additional counterweight type traction drive elevator.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An additional counterweight traction drive elevator comprises an elevator car, an elevator main engine traction wheel and a fixed guide wheel, and also comprises a fixed redirection guide wheel, a main counterweight device, an additional counterweight device, a main steel wire rope and an additional steel wire rope; one end of the main steel wire rope is connected to the elevator car, and the other end is connected to the main counterweight device after passing through the elevator main engine traction wheel and the fixed guide wheel; one end of the additional steel wire rope is connected to the elevator car, and the other end is connected to the additional counterweight device after passing through the fixed redirection guide wheel.

[0008] Furthermore, the total weight of the main counterweight device and the additional counterweight device is equal to the balance weight of the elevator.

[0009] As another technical solution of the utility model, an additional counterweight traction-driven elevator comprises an elevator car, an elevator main engine traction wheel and a movable pulley guide wheel, and also comprises a fixed redirecting guide wheel, a main counterweight device, an additional counterweight device, a main steel wire rope and an additional steel wire rope; the main steel wire rope and the additional steel wire rope respectively correspond to a movable pulley guide wheel on the elevator car, one end of the main steel wire rope and one end of the additional steel wire rope respectively pass around the corresponding movable pulley guide wheel on the elevator car and are fixed, the other end of the main steel wire rope passes around the elevator main engine traction wheel and a movable pulley guide wheel on the main counterweight device in turn and is fixed, and the other end of the additional steel wire rope passes around the fixed redirecting guide wheel and a movable pulley guide wheel on the additional counterweight device in turn and is fixed.

[0010] Furthermore, the total weight of the main counterweight device and the additional counterweight device is equal to the balance weight of the elevator.

[0011] As another technical solution of the utility model, an additional counterweight traction drive elevator includes an elevator car, an elevator main engine traction wheel, a fixed guide wheel and a movable pulley guide wheel, and also includes a fixed redirection guide wheel, a main counterweight device, an additional counterweight device, a main steel wire rope and an additional steel wire rope; two movable pulley guide wheels are respectively arranged on the main counterweight device and the additional counterweight device, and the main steel wire rope and the additional steel wire rope correspond to the two movable pulley guide wheels on the elevator car, and correspond to the two fixed guide wheels respectively; one end of the main steel wire rope and one end of the additional steel wire rope are fixed; the other end of the main steel wire rope passes around one of the movable pulley guide wheels on the corresponding elevator car, and its corresponding The other end of the additional steel wire rope is fixed after passing through one of the corresponding movable pulley guide wheels on the elevator car, one of the corresponding fixed guide wheels, another movable pulley guide wheel on the elevator car, the elevator main engine traction wheel, one of the movable pulley guide wheels on the main counterweight device, another corresponding fixed guide wheel and another movable pulley guide wheel on the main counterweight device; the other end of the additional steel wire rope is fixed after passing through one of the corresponding movable pulley guide wheels on the elevator car, one of the corresponding fixed guide wheels, another movable pulley guide wheel on the elevator car, the fixed redirecting guide wheel, one of the movable pulley guide wheels on the additional counterweight device, another corresponding fixed guide wheel and another movable pulley guide wheel on the additional counterweight device.

[0012] Furthermore, the total weight of the main counterweight device and the additional counterweight device is equal to the balance weight of the elevator.

[0013] The beneficial effects of the utility model are:

[0014] 1. In the present invention, by setting up an additional counterweight device and a main counterweight device that are independent of each other, although the additional steel wire rope does not pass through the elevator main traction wheel, it is also fixed to the elevator car side, and the function of balancing the weight of all or part of the elevator car for energy saving is also achieved. In addition, due to the independence of the additional counterweight device, it can be set at a position far away from the main counterweight device or close to the main counterweight device as needed, and its design position is not limited. When designing the elevator, the space of the hoistway can be fully utilized according to the specific conditions of the hoistway.

[0015] 2. The problem of the counterweight device being too large can be solved by using independent counterweight devices.

[0016] 3. The utility model is also applicable to the reconstruction project of increasing the rated load capacity of freight elevators. When reconstructing the elevator car, if you still want to keep the original traction ratio unchanged, you can add an additional counterweight device after replacing the high-power elevator main unit. In this way, the original counterweight device automatically becomes the main counterweight device, which can greatly reduce the reconstruction cost of the original counterweight device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a motor main unit and a traction wheel in an existing counterweight traction drive elevator;

[0018] Figure 2 It is a structural schematic diagram of an existing counterweight traction drive elevator with a traction ratio of 1:1;

[0019] Figure 3 The schematic diagram of the structure of an existing counterweight traction drive elevator with a traction ratio of 2:1 is shown;

[0020] Figure 4 The schematic diagram of the structure of an existing counterweight traction drive elevator with a traction ratio of 4:1 is shown;

[0021] Figure 5 It is a structural schematic diagram of an additional counterweight traction drive elevator in Example 1;

[0022] Figure 6 It is a structural schematic diagram of an additional counterweight traction drive elevator in Example 2;

[0023] Figure 7 It is a structural schematic diagram of an additional counterweight traction drive elevator in Example 3;

[0024] Figure 8 This is a schematic diagram of the structure of the additional counterweight traction drive elevator in Comparative Example 1. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings. It should be noted that this embodiment is based on the technical solution and provides a detailed implementation method and a specific operation process, but the protection scope of the present invention is not limited to this embodiment.

[0026] Example 1

[0027] This embodiment provides an additional counterweight traction drive elevator, whose traction ratio is 1:1. Figure 5 As shown, it includes an elevator car 1, an elevator main engine traction wheel 2 and a fixed guide wheel 3, and also includes a fixed redirecting guide wheel 4, a main counterweight device 5, an additional counterweight device 6, a main steel wire rope 7 and an additional steel wire rope 8; one end of the main steel wire rope 7 is connected to the elevator car 1, and the other end is connected to the main counterweight device 5 after passing through the elevator main engine traction wheel 2 and the fixed guide wheel 3; one end of the additional steel wire rope 8 is connected to the elevator car 1, and the other end is connected to the additional counterweight device 6 after passing through the fixed redirecting guide wheel 4.

[0028] Specifically, in this embodiment, the total weight of the main counterweight device and the additional counterweight device is equal to the balance weight of the elevator.

[0029] When the elevator main engine drives the elevator main engine traction wheel to rotate forward or reverse, the elevator car goes up, and the main counterweight device and the additional counterweight device go down at the same time. When the elevator car goes down, the main counterweight device and the additional counterweight device go up at the same time. The main counterweight device and the additional counterweight device are synchronized but independent of each other. Since the main counterweight device and the additional counterweight device are both connected to the elevator car, although the main steel wire rope bypasses the elevator main engine traction wheel and the additional steel wire rope does not bypass the elevator main engine traction wheel, they both play a role in balancing the deadweight of the elevator car.

[0030] Example 2

[0031] This embodiment provides an additional counterweight traction drive elevator, whose traction ratio is 2:1. Figure 6 As shown, it includes an elevator car 1, an elevator main machine traction wheel 2 and a movable pulley guide wheel 9, and also includes a fixed redirection guide wheel 4, a main counterweight device 5, an additional counterweight device 6, a main wire rope 7 and an additional wire rope 8; the main wire rope 7 and the additional wire rope 8 respectively correspond to a movable pulley guide wheel 9 on the elevator car 1, one end of the main wire rope 7 and one end of the additional wire rope 8 respectively pass around the corresponding movable pulley guide wheel 9 on the elevator car 1 and are fixed, the other end of the main wire rope 7 passes around the elevator main machine traction wheel 2 and a movable pulley guide wheel 9 on the main counterweight device 5 in turn and is fixed, and the other end of the additional wire rope 8 passes around the fixed redirection guide wheel 4 and a movable pulley guide wheel 9 on the additional counterweight device 6 in turn and is fixed.

[0032] In this embodiment, the total weight of the main counterweight device 5 and the additional counterweight device 6 is equal to the balance weight of the elevator.

[0033] The working principle of the additional counterweight traction drive elevator in this embodiment is the same as that in Embodiment 1. During operation, when the elevator main engine drives the elevator main engine traction wheel to rotate forward or reverse, the elevator car goes up, and the main counterweight device and the additional counterweight device go down at the same time. When the elevator car goes down, the main counterweight device and the additional counterweight device go up at the same time.

[0034] Example 3

[0035] This embodiment provides an additional counterweight traction drive elevator, whose traction ratio is 4:1. Figure 7As shown, it includes an elevator car 1, an elevator main engine traction wheel 2, a fixed guide wheel 3 and a movable pulley guide wheel 9, and also includes a fixed redirection guide wheel 4, a main counterweight device 5, an additional counterweight device 6, a main steel wire rope 7 and an additional steel wire rope 8; the main counterweight device 5 and the additional counterweight device 6 are respectively provided with two movable pulley guide wheels 9, the main steel wire rope 7 and the additional steel wire rope 8 respectively correspond to the two movable pulley guide wheels 9 on the elevator car 1, and respectively correspond to the two fixed guide wheels 3; one end of the main steel wire rope 7 and one end of the additional steel wire rope 8 are fixed; the other end of the main steel wire rope 7 passes around one of the movable pulley guide wheels 9 on the corresponding elevator car 1, one of the corresponding fixed guide wheels 3, and its corresponding The other end of the additional steel wire rope 8 is fixed after passing through the corresponding one of the movable pulley guide wheels 9 on the elevator car 1, the elevator main engine traction wheel 2, one of the movable pulley guide wheels 9 on the main counterweight device 5, the corresponding other fixed guide wheel 3 and the other movable pulley guide wheel 9 on the main counterweight device 5; the other end of the additional steel wire rope 8 is fixed after passing through the corresponding one of the movable pulley guide wheels 9 on the elevator car 1, the corresponding one of the fixed guide wheels 3, the corresponding other movable pulley guide wheel 9 on the elevator car 1, the fixed redirecting guide wheel 4, one of the movable pulley guide wheels 9 on the additional counterweight device 6, the corresponding other fixed guide wheel 3 and the other movable pulley guide wheel 9 on the additional counterweight device 6.

[0036] In this embodiment, the total weight of the main counterweight device 5 and the additional counterweight device 6 is equal to the balance weight of the elevator.

[0037] The working principle of the additional counterweight traction drive elevator in this embodiment is the same as that of embodiments 1 and 2. During operation, when the elevator main engine drives the elevator main engine traction wheel to rotate forward or reverse, the elevator car goes up, and the main counterweight device and the additional counterweight device go down at the same time. When the elevator car goes down, the main counterweight device and the additional counterweight device go up at the same time.

[0038] Comparative Example 1

[0039] This comparative example provides a double-counterweight traction elevator as a comparative example. Figure 8 As shown, the traction ratio of the traction elevator is 4:1, and it includes an elevator car 200, an elevator main engine traction wheel 201, a steel wire rope 202, a fixed guide wheel 203, a movable pulley guide wheel 204 and two counterweight devices 205. Different from the embodiments 1-3, the two counterweight devices in this comparative example are wound by the same set of steel wire ropes 202, so they are actually connected, but are separated in form.

[0040] However, in Examples 1-3, the steel wire ropes of the main counterweight device and the additional counterweight device are not the same group, but two independent groups of steel wire ropes. Therefore, the main counterweight device and the additional counterweight device are truly independent double counterweights.

[0041] In summary, in Examples 1-3, the additional counterweight device is independent of the main counterweight device, and the additional steel wire rope does not pass through the elevator main traction wheel, but is also fixed to the side of the elevator car, which also realizes the function of balancing the mass of all or part of the elevator car's deadweight for energy saving. In addition, due to the independence of the additional counterweight device, it can be set at a position away from the main counterweight device or close to the main counterweight device as needed, and its design position is not restricted. For example, the main counterweight device is set as the left counterweight, and the additional counterweight can be set as the right counterweight or the rear counterweight. When the elevator shaft is irregular, the shaft space can be reasonably utilized. Similarly, if the elevator parallel lane is large enough, more than one additional counterweight device can be designed to achieve the purpose of design optimization. In addition, by using independent counterweight devices, the problem of the counterweight device being too large can be solved.

[0042] The additional counterweight traction-driven elevator described in Examples 1-3 is also suitable for the renovation project of increasing the rated load capacity of a freight elevator. When renovating the elevator car, if the traction ratio of the elevator needs to be changed, the amount of work will be very large. If you still want to keep the original traction ratio unchanged, you can only replace the high-power elevator main unit and then add an additional counterweight device. In this way, the original counterweight device automatically becomes the main counterweight device, which can greatly reduce the renovation cost of the original counterweight device.

[0043] For those skilled in the art, various corresponding changes and modifications can be made according to the above technical solutions and concepts, and all of these changes and modifications should be included in the protection scope of the claims of the utility model.

Claims

1. An additional counterweight traction drive elevator, comprising an elevator car (1), an elevator main engine traction wheel (2) and a fixed guide wheel (3), characterized in that: It also comprises a fixed redirecting guide wheel (4), a main counterweight device (5), an additional counterweight device (6), a main steel wire rope (7) and an additional steel wire rope (8); one end of the main steel wire rope (7) is connected to the elevator car (1), and the other end is connected to the main counterweight device (5) after passing through the elevator main machine traction wheel (2) and the fixed guide wheel (3); one end of the additional steel wire rope (8) is connected to the elevator car (1), and the other end is connected to the additional counterweight device (6) after passing through the fixed redirecting guide wheel (4).

2. The additional counterweight traction drive elevator according to claim 1, characterized in that: The total weight of the main counterweight device and the additional counterweight device is equal to the balance weight of the elevator.

3. An additional counterweight traction drive elevator, comprising an elevator car (1), an elevator main engine traction wheel (2) and a movable pulley guide wheel (9), characterized in that: The invention also comprises a fixed redirecting guide wheel (4), a main counterweight device (5), an additional counterweight device (6), a main steel wire rope (7) and an additional steel wire rope (8); the main steel wire rope (7) and the additional steel wire rope (8) respectively correspond to a movable pulley guide wheel (9) on the elevator car (1); one end of the main steel wire rope (7) and one end of the additional steel wire rope (8) respectively pass around the corresponding movable pulley guide wheel (9) on the elevator car (1) and are fixed; the other end of the main steel wire rope (7) passes around the elevator main machine traction wheel (2) and a movable pulley guide wheel (9) on the main counterweight device (5) in turn and is fixed; the other end of the additional steel wire rope (8) passes around the fixed redirecting guide wheel (4) and a movable pulley guide wheel (9) on the additional counterweight device (6) in turn and is fixed.

4. The additional counterweight traction drive elevator according to claim 3, characterized in that: The total weight of the main counterweight device (5) and the additional counterweight device (6) is equal to the balance weight of the elevator.

5. An additional counterweight traction drive elevator, comprising an elevator car (1), an elevator main engine traction wheel (2), a fixed guide wheel (3) and a movable pulley guide wheel (9), characterized in that: The invention also comprises a fixed redirecting guide wheel (4), a main counterweight device (5), an additional counterweight device (6), a main steel wire rope (7) and an additional steel wire rope (8); the main counterweight device (5) and the additional counterweight device (6) are respectively provided with two movable pulley guide wheels (9); the main steel wire rope (7) and the additional steel wire rope (8) respectively correspond to the two movable pulley guide wheels (9) on the elevator car (1) and respectively correspond to the two fixed guide wheels (3); one end of the main steel wire rope (7) and one end of the additional steel wire rope (8) are fixed; the other end of the main steel wire rope (7) passes around one of the movable pulley guide wheels (9) on the corresponding elevator car (1), one of the fixed guide wheels (3) and another movable pulley guide wheel on the corresponding elevator car (1). The invention relates to a method for fixing an additional steel wire rope (8) and an elevator main engine traction wheel (9), an elevator main engine traction wheel (2), one of the movable pulley guide wheels (9) on the main counterweight device (5), another corresponding fixed guide wheel (3) and another movable pulley guide wheel (9) on the main counterweight device (5), and then fixing the additional steel wire rope (8); the other end of the additional steel wire rope (8) is passed around one of the movable pulley guide wheels (9) on the corresponding elevator car (1), one of the fixed guide wheels (3) and another movable pulley guide wheel (9) on the corresponding elevator car (1), a fixed redirecting guide wheel (4), one of the movable pulley guide wheels (9) on the additional counterweight device (6), another corresponding fixed guide wheel (3) and another movable pulley guide wheel (9) on the additional counterweight device (6), and then fixing the additional steel wire rope (8).

6. The additional counterweight traction drive elevator according to claim 5, characterized in that: The total weight of the main counterweight device (5) and the additional counterweight device (6) is equal to the balance weight of the elevator.

Images