Double-elevator system

Abstract

The utility model relates to a double-elevator system. The double-elevator system comprises two lift cars, the two lift cars are arranged in the same hoistway in the vertical direction and can ascend and descend separately in the vertical direction, a first lift car lifting system is arranged for the first lift car, and a second lift car lifting system is arranged for the second lift car. And after the first lift car lifting system is installed, the second lift car lifting system is installed. Namely, the double-elevator system can be installed and used in two steps, in the first stage, the first lift car lifting system is installed and can be put into use, and then the double-elevator system operates in the form of a half double-elevator. And in the second stage, a second lift car lifting system is installed, and therefore a complete double-elevator system is formed. Therefore, the earlier-stage capital pressure in the building process can be relieved, energy consumption can be saved at the initial stage of building use, and installation and use progress can be flexible.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, in particular to a twin elevator system. Background Art

[0002] A twin elevator refers to an elevator system with two cabins installed in the same shaft. The two cabins can run independently up and down in the shaft, making it possible for two passengers to reach different floors at the same time. Therefore, a twin elevator can effectively improve the transportation efficiency of the elevator.

[0003] However, since the two cars need to be equipped with an additional set of main components such as counterweights, drive devices, and other related safety components, the initial capital pressure in the construction process is large, and the energy consumption in the initial stage of the building is large. Therefore, it is particularly important to provide a twin elevator that allows either of the two cars to operate independently.

[0004] The above statement of background technology is only for facilitating an in-depth understanding of the technical solution of the utility model (such as the technical means used, the technical problems solved and the technical effects produced), and should not be regarded as an admission or any form of implication that the information constitutes prior art already known to those skilled in the art. Utility Model Content

[0005] The utility model aims to provide a twin elevator system, which enables any one of the two elevator cars to run independently first.

[0006] According to an embodiment of the utility model, a twin elevator system is provided, which includes two cars, which are arranged in the same hoistway in the vertical direction and can rise and fall separately from each other in the vertical direction, and a first car lifting system is provided for the first car, and a second car lifting system is provided for the second car. After the first car and the first car lifting system are installed, the second car and the second car lifting system are installed.

[0007] Each of the first car lifting system and the second car lifting system may include: a driving device, which includes at least a traction machine; a suspension device, which includes a suspension rope or a suspension belt and at least one guide wheel around which the suspension rope or the suspension belt is wound; a counterweight, which is connected to the car through the suspension device, and the traction machine pulls the counterweight and the car through the suspension device.

[0008] In each of the first car hoisting system and the second car hoisting system, the counterweight and the car may be connected to the suspension ropes or suspension belts via rope ends or pulley sets.

[0009] Each of the first car lifting system and the second car lifting system may further include: a compensation device, which includes a compensation rope or a compensation chain connecting the counterweight and the car and at least one compensation wheel around which the compensation rope or the compensation chain is wound, or includes a compensation weight block arranged at the bottom of the car.

[0010] A preparation space for installing a second car and a second car lifting system may be reserved, and the second car and the second car lifting system may be installed after the first car and the first car lifting system are installed.

[0011] After the first car lifting system and the second car lifting system are installed, a safety protection system for preventing the first car from colliding with the second car may be installed.

[0012] The utility model adopts the above technical solution, which has the following beneficial effects: the twin elevator system can be installed and used in two steps. In the first stage, the first car lifting system is installed and can be put into use, and the twin elevator system operates in the form of "half a twin elevator". In the second stage, the second car lifting system is installed, thereby forming a complete twin elevator system. Specifically, the second stage can be a stage where the passenger flow in the building increases, the elevator needs to meet a larger traffic flow, or the customer's budget can meet the dual-car configuration. Therefore, the utility model can alleviate the initial capital pressure in the process of building construction, can save energy consumption in the early stage of the building being put into use, and can flexibly install and use the progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The following will describe the exemplary embodiments of the present invention in more detail with reference to the accompanying drawings. For the sake of clarity, the same components in different drawings are shown with the same reference numerals. It should be noted that the drawings are only for illustration and are not necessarily drawn to scale. In these drawings:

[0014] Figure 1 A schematic structural diagram of a single elevator in a twin elevator system according to an exemplary embodiment of the present utility model is shown.

[0015] Figure 2 A schematic structural diagram of two elevators in a twin elevator system according to an exemplary embodiment of the present utility model is shown. DETAILED DESCRIPTION

[0016] The implementation scheme of the utility model is described in detail below. This implementation scheme is implemented on the premise of the technical scheme of the utility model, and a detailed implementation method and specific operation process are given, but the protection scope of the utility model is not limited to the implementation scheme described below.

[0017] According to an embodiment of the present invention, the twin elevator system includes two cars, which are arranged in the same hoistway in the vertical direction and can rise and fall separately from each other in the vertical direction, and a first car lifting system is provided for the first car, and a second car lifting system is provided for the second car.

[0018] According to the implementation scheme of the utility model, after the first car and the first car lifting system are installed, the second car and the second car lifting system are installed. That is, the twin elevator system can be installed and used in two steps. In the first stage, the first car lifting system is installed and can be put into use, and the twin elevator system operates in the form of "half a twin elevator". In the second stage, the second car lifting system is installed, thereby forming a complete twin elevator system. Specifically, the second stage can be a stage where the passenger flow in the building increases, the elevator needs to meet a larger traffic flow, or the customer's budget can meet the dual-car configuration. As a result, the initial capital pressure in the construction process can be alleviated, energy consumption can be saved in the early stage of the building being put into use, and the installation and use progress can be flexible.

[0019] Preferably, a preparation space for installing the second car and the second car lifting system is reserved, and the second car and the second car lifting system are installed after the first car and the first car lifting system are installed. Specifically, the preparation space includes the preparation space for the machine room, the shaft and the pit (i.e., the space above the pit surface). These will be based on the civil engineering layout of the project. At the beginning, the civil engineering drawing will be completed, and the layout of the two elevators will be included in the civil engineering drawing. Therefore, sufficient space is specified at the beginning. If the civil engineering layout arranges the machine rooms of the two elevators on the same floor, then sufficient space size can be reserved on the same floor. If the civil engineering layout arranges the machine rooms of the two elevators on different floors, and an additional auxiliary machine room is required, it is necessary to reserve the machine room space on another floor. Similarly, the civil engineering layout will reserve sufficient size for the shaft, and the shaft can contain some space for control systems. If the civil engineering layout arranges the pit surface of the two elevators on the same floor, then the civil engineering layout will reserve sufficient size for the pit.

[0020] Preferably, after the installation of the first car lifting system and the second car lifting system is completed, a safety protection system for preventing the first car from colliding with the second car is installed. The safety protection system is installed in the machine room, and before the project starts, the civil construction layout will give a sufficient machine room size to accommodate the safety protection system. The safety protection system can receive signals from a speed displacement sensor, which is installed on the first car and the second car. After the safety protection system receives the position and speed information of the first car and the second car, the real-time distance and speed of the first car and the second car can be calculated. When the real-time distance is approaching the safety distance, or the real-time speed is too fast so that the elevator may accelerate to the safety distance, the safety protection system will start the traction machine's brake to brake the first car and the second car. If the first car and the second car still cannot decelerate, the safety protection system will trigger the safety clamp action.

[0021] Specifically, each of the first car lifting system and the second car lifting system may include a driving device, a suspension device and a counterweight. The driving device includes at least a traction machine. The suspension device includes a suspension rope and at least one guide wheel around which the suspension rope is wound. The counterweight is connected to the car through the suspension device, and the traction machine pulls the counterweight and the car through the suspension device. In this way, the lifting and lowering of the first car and the second car can be achieved.

[0022] Preferably, each of the first car lifting system and the second car lifting system may further include a compensation device, which may include a compensation rope connecting the counterweight and the car and at least one compensation wheel around which the compensation rope is wound. In other embodiments, the compensation device may include a compensation weight block arranged at the bottom of the car. The function of the compensation device is to compensate for the weight difference between the car and the counterweight, so that the weight on both sides of the traction machine is more balanced, which is beneficial to the stable operation of the car.

[0023] Hereinafter, a twin elevator system according to an exemplary embodiment of the present invention is described in detail. Figure 1 A schematic structural diagram of a single elevator in a twin elevator system according to an exemplary embodiment of the present utility model is shown.

[0024] like Figure 1 As shown, the first car lifting system set for the first car 110 may include: a first counterweight 120, a first traction machine 130, a first counterweight side wheel group, a first car side wheel group, a first guide wheel assembly, a first compensation wheel assembly, a first suspension rope 150 and a first compensation rope 160.

[0025] The first hoisting machine 130 is disposed in a machine room 400. The machine room 400 is disposed at the top of the shaft 300 and is separated from the shaft 300 by a partition wall 310. The partition wall 310 forms the floor of the machine room 400 and forms the top surface of the shaft 300. In addition, the partition wall 310 is provided with a plurality of rope holes for the suspension rope to pass through.

[0026] According to an embodiment of the present invention, the driving device of the first car lifting system may further include a frame for installing the first traction machine 130 in addition to the first traction machine 130, and the driving device is arranged in the machine room 400. According to the above exemplary embodiment, the machine room 400 is arranged at the top of the hoistway 300, but the present invention is not limited thereto, and the machine room 400 may also be arranged at the bottom or outside of the hoistway 300.

[0027] The first counterweight side wheel group may include a first counterweight top wheel 141 connected to the top of the first counterweight 120 .

[0028] The first car top wheel group 142 may include a right first car top wheel 147 , a middle first car top wheel 146 , and a left first car top wheel 148 , which are connected to the top of the first car 110 .

[0029] The first guide wheel assembly includes a first machine room guide wheel 143 , and the first machine room guide wheel 143 is disposed in the machine room 400 .

[0030] Both ends of the first suspension rope 150 are respectively connected to the partition wall 310, and one end of the first suspension rope 150 is sequentially wrapped around a first car top wheel in the first car top wheel group 142 (specifically, the middle first car top wheel 146), the first traction machine 130, the first machine room guide wheel 143 and the first counterweight top wheel 141 until it reaches the other end of the first suspension rope 150.

[0031] According to the above exemplary embodiment, the counterweight (i.e., the first counterweight 120) is connected to the suspension rope (i.e., the first suspension rope 150) through the wheel set (i.e., the first counterweight top wheel 141), and the car (i.e., the first car 110) is connected to the suspension rope (i.e., the first suspension rope 150) through the wheel set (i.e., the middle first car top wheel 146). However, the present invention is not limited thereto, and the first counterweight 120 and the first car 110 may also be connected to the first suspension rope 150 through rope ends.

[0032] The first compensation wheel assembly includes a first hoistway compensation wheel 144 and a first hoistway pit wheel set 145. The first hoistway compensation wheel 144 is arranged in the hoistway 300. The first hoistway pit wheel set 145 is connected to the pit surface 320 of the hoistway 300. Specifically, the first hoistway pit wheel set 145 includes a left first hoistway pit wheel 140 and a right first hoistway pit wheel 149.

[0033] Both ends of the first compensation rope 160 are connected to the first counterweight 120, and one end of the first compensation rope 160 is successively wrapped around the first shaft bottom pit wheel group 145 (specifically, the left first shaft bottom pit wheel 140 and the right first shaft bottom pit wheel 149), the other first car top wheels in the first car top wheel group 142 (specifically, the right first car top wheel 147 and the left first car top wheel 148), and the first shaft compensation wheel 144 until it reaches the other end of the first compensation rope 160.

[0034] According to the above exemplary embodiment, the compensation device is a loop consisting of the first compensation rope 160 and the compensation wheel (i.e., the left first hoistway pit wheel 140, the right first hoistway pit wheel 149, the right first car top wheel 147 and the left first car top wheel 148 and the first hoistway compensation wheel 144), and both ends of the first compensation rope 160 are connected to the counterweight 120, but the utility model is not limited thereto, when the compensation device is a loop consisting of the compensation rope and the compensation wheel, both ends of the first compensation rope 160 may be connected to the first car 110, or one end of the first compensation rope 160 is connected to the first counterweight 120, and the other end is connected to the first car 110. In other embodiments, the compensation device may be a compensation weight block provided at the bottom of the first car 110.

[0035] In the first stage, the first car 110 and the first car lifting system can be operated separately to provide passengers with a ride.

[0036] like Figure 2 As shown, the second car lifting system set for the second car 210 may include a second counterweight 220, a second traction machine 230, a second counterweight side wheel group, a second car side wheel group, a second guide wheel assembly, a second compensation wheel assembly, a second suspension rope 250 and a second compensation rope 260.

[0037] The second hoisting machine 230 is disposed in the machine room 400. The second hoisting machine 230 and the first hoisting machine 130 may be located in the same machine room 400 or in different machine rooms 400.

[0038] Similarly, the driving device of the second car hoisting system may further include a frame for installing the second hoisting machine 230 in addition to the second hoisting machine 230 .

[0039] The second counterweight side wheel set includes a second counterweight top wheel 241 , and the second counterweight top wheel 241 is connected to the top of the second counterweight 220 .

[0040] The second car top wheel group 242 includes a right second car top wheel 247 and a left second car top wheel 248. The right second car top wheel 247 and the left second car top wheel 248 are connected to the top of the second car 210.

[0041] The second guide wheel assembly includes a second machine room guide wheel 243 , and the second machine room guide wheel 243 is disposed in the machine room 400 .

[0042] Both ends of the second suspension rope 250 are respectively connected to the partition wall 310, and one end of the second suspension rope 250 is sequentially passed through the second car top wheel group 242 (specifically, the right second car top wheel 247 and the left second car top wheel 248), the second traction machine 230, the second machine room guide wheel 243 and the first counterweight top wheel 241 until the other end of the second suspension rope 250.

[0043] According to the above exemplary embodiment, the counterweight (i.e., the second counterweight 220) is connected to the suspension rope (i.e., the second suspension rope 250) through the wheel set (i.e., the second counterweight top wheel 241), and the car (i.e., the second car 210) is connected to the suspension rope (i.e., the second suspension rope 250) through the wheel set (i.e., the right second car top wheel 247 and the left second car top wheel 248). However, the present invention is not limited thereto, and the second counterweight 220 and the second car 210 may also be connected to the second suspension rope 250 through a rope head.

[0044] The second compensation wheel assembly includes a second hoistway pit wheel set 245, and the second hoistway pit wheel set 245 is connected to the pit surface 320 of the hoistway 300. Specifically, the second hoistway pit wheel set 245 includes a left first hoistway pit wheel 240 and a right first hoistway pit wheel 249.

[0045] Both ends of the second compensation rope 260 are respectively connected to the second car 210 and the second counterweight 220, and one end of the second compensation rope 260 connected to the second car 210 is sequentially wrapped around the second shaft pit wheel group 245 (specifically, the left first shaft pit wheel 240 and the right first shaft pit wheel 249) until the other end of the second compensation rope 260 is connected to the second counterweight 220.

[0046] According to the above exemplary embodiment, the compensation device is a loop consisting of the second compensation rope 260 and the compensation wheel (i.e., the left first hoistway pit wheel 240 and the right first hoistway pit wheel 249), and one end of the second compensation rope 260 is connected to the second counterweight 220, and the other end is connected to the second car 210, but the utility model is not limited thereto, when the compensation device is a loop consisting of the compensation rope and the compensation wheel, both ends of the second compensation rope 260 may be connected to the second counterweight 220, or both connected to the second car 210. In other embodiments, the compensation device may be a compensation weight block disposed at the bottom of the second car 210.

[0047] In the second stage, the first car 110 and the first car hoisting system and the second car 210 and the second car hoisting system may operate together for passengers to ride.

[0048] According to an embodiment of the utility model, the suspension rope (specifically, the first suspension rope 150 and the second suspension rope 250) can be replaced by a suspension belt, for example, the suspension rope can be a steel wire rope, and the suspension belt can be a steel belt. The compensation rope (specifically, the first compensation rope 160 and the second compensation rope 260) can be replaced by a compensation chain.

[0049] According to the implementation scheme of the utility model, during the installation of the twin elevator, the installation work can be completed in two stages. In the first stage, a liftable car and its related components, including guide rails, counterweights, suspension ropes, control cabinets (i.e., machine rooms), etc., are installed first. In addition, all preparation space for the subsequent installation of another lifting system is reserved. After installation, the twin elevator system operates in the form of "half a twin elevator". In the second stage, the passenger flow in the building increases and needs to meet a larger traffic flow, or the customer's budget can meet the dual-car configuration, then another liftable car and its related components, as well as a safety protection system to prevent the two cars from colliding, can be installed. Thus, the installation of the entire twin elevator can be completed. The elevator can operate in the form of a twin elevator.

[0050] The twin elevator system according to the implementation scheme of the utility model can alleviate the initial capital pressure in the process of building a building, can save energy consumption in the early stage of the building being put into use, and can be flexibly installed and used.

[0051] The various embodiments of the present invention are not an exhaustive list of all possible combinations, but are intended to describe representative aspects of the present invention, and the content described in various embodiments can be applied independently or in combination of two or more.

[0052] The description presented in the above exemplary embodiments is only used to illustrate the technical solution of the utility model, and is not intended to be exhaustive, nor is it intended to limit the utility model to the precise form described. Obviously, it is possible for a person of ordinary skill in the art to make many changes and variations based on the above teachings. The exemplary embodiments are selected and described in order to explain the specific principles of the utility model and its practical application, so that other technicians in the field can easily understand, implement and use the various exemplary embodiments of the utility model and its various selected forms and modified forms. The scope of protection of the utility model is intended to be defined by the attached claims and their equivalent forms.

Claims

1. A twin elevator system, characterized in that: The invention comprises two cars, the two cars are arranged in the same hoistway in the vertical direction and can be raised and lowered separately from each other in the vertical direction, and a first car lifting system is provided for the first car, and a second car lifting system is provided for the second car, each of the first car lifting system and the second car lifting system comprises: A driving device, which includes at least a traction machine; A suspension device comprising a suspension rope or a suspension belt and at least one guide wheel around which the suspension rope or the suspension belt passes; a counterweight connected to the car via the suspension device, and the traction machine pulls the counterweight and the car via the suspension device; The compensating device comprises a compensating rope or a compensating chain connecting the counterweight and the car and at least one compensating wheel around which the compensating rope or the compensating chain passes, or comprises a compensating weight block arranged at the bottom of the car.

2. The twin elevator system according to claim 1, characterized in that: In each of the first car hoisting system and the second car hoisting system, the counterweight and the car are connected to the suspension ropes or suspension belts through rope ends or pulley sets.

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