Counterweight-free elevator traction device

Abstract

The invention provides a counterweight-free elevator traction device, and belongs to the technical field of elevators. The counterweight-free elevator traction device comprises a multi-layer elevator frame and a steel belt. A driving device is installed at the top end of the multi-layer elevator frame, a car is arranged in the multi-layer elevator frame, a first pulley and a second pulley are installed at the top end and the bottom end of the car, a third pulley is installed at the bottom in the multi-layer elevator frame, one end of the steel belt is connected with the top end of the multi-layer elevator frame, and the other end of the steel belt is connected with the other end of the multi-layer elevator frame. And then the other end of the steel belt sequentially bypasses the first pulley, the driving device, one third pulley, the second pulley and the other third pulley and is connected with one side of the bottom end of the multi-layer elevator frame. Through the arrangement of the steel belt, the distance between the lift car wall and the multi-layer elevator frame is very small, the lift car can be made to be maximum as much as possible under the hoistway with the same size, and carrying personnel are increased.

Description

Technical Field

[0001] This application relates to the field of elevators, and more particularly, to a counterweightless elevator traction device. Background Art

[0002] As the mainstream of elevators, traction elevators generally have a counterweight device. The counterweight device can relatively balance the weight of the car, but the energy consumption is large, the cost is high, and the counterweight device occupies a certain area of the hoistway, resulting in a low utilization rate of the hoistway. In addition, the pit is the part of the hoistway below the lowest landing served by the elevator car. However, sometimes there are different pipelines buried underground, resulting in a small pit depth that is difficult to meet the requirements of ordinary elevators.

[0003] However, the existing elevator traction device will occupy the internal structure of the frame, making the size of the car smaller. Summary of the Invention

[0004] To make up for the above deficiencies, this application provides a counterweightless elevator traction device, aiming to improve the problem that the elevator traction device occupies the internal structure of the frame and makes the size of the car smaller.

[0005] An embodiment of this application provides a counterweightless elevator traction device, including a multi-layer elevator frame and a steel belt.

[0006] A driving device is installed at the top of the multi-layer elevator frame. A car is arranged inside the multi-layer elevator frame. First pulleys and second pulleys are installed at both the top and the bottom of the car. And a third pulley is installed at the bottom inside the multi-layer elevator frame. One end of the steel belt is connected to the top of the multi-layer elevator frame, and then the other end of the steel belt successively bypasses the first pulley, the driving device, one of the third pulleys, the second pulley, and the other third pulley and is connected to one side of the bottom end of the multi-layer elevator frame.

[0007] In a specific implementation, a steel belt adjuster is installed on the outside of the multi-layer elevator frame, and the other end of the steel belt is connected to the steel belt adjuster.

[0008] In a specific implementation, the steel belt adjuster includes a guiding part, a mounting connection seat, and an adjusting part. The guiding part is installed at the bottom of the multi-layer elevator frame. The mounting connection seat is installed on the outside of the bottom of the multi-layer elevator frame. The adjusting part is installed on the mounting connection seat. The other end of the steel belt passes through the bottom wall of the multi-layer elevator frame, bypasses the guiding part, and is connected to the adjusting part.

[0009] In a specific embodiment, the adjusting part includes a U-shaped frame with first ear plates at both ends. A height adjusting rod penetrates through the first ear plates on the top and bottom walls of the U-shaped frame. A sliding plate is arranged on the two height adjusting rods together. The sliding plate is connected to the steel belt. Springs are sleeved on the two height adjusting rods inside the U-shaped frame, and nuts are screwed on the tops of the two height adjusting rods.

[0010] In a specific embodiment, the guiding part includes a fixed seat. The fixed seat is installed at the bottom of the multi-layer elevator frame. A guiding roller is installed inside the fixed seat, and the steel belt bypasses the guiding roller.

[0011] In a specific embodiment, second ear plates are arranged on both sides of the top and bottom ends of the sliding plate, and the second ear plates on both sides respectively penetrate through the two height adjusting rods movably.

[0012] In a specific embodiment, the springs are respectively sleeved on the outer sides of the height adjusting rods between the two second ear plates.

[0013] In a specific embodiment, a connecting roller is installed on the sliding plate, and the steel belt is arranged on the connecting roller.

[0014] In a specific embodiment, a steel belt connecting seat is installed at the top of the multi-layer elevator frame, and the top end of the steel belt is connected to the steel belt connecting seat.

[0015] In a specific embodiment, elevator opening and closing doors are arranged at the floor exits corresponding to the multi-layer elevator frame.

[0016] Beneficial effects:

[0017] 1. Through the arrangement of the steel belt, the distance between the car wall and the multi-layer elevator frame is very small. Under the same-sized hoistway, the car can be made as large as possible, increasing the number of passengers carried.

[0018] 2. By installing the driving device at the top of the multi-layer elevator frame, the pit can be made small, and a pit of 200 mm can be achieved. Without a counterweight setting, the requirement for the hoistway size by the car of the same size is greatly reduced.

[0019] 3. The whole device adopts an ultra-thin multi-layer elevator frame hoistway, without a counterweight design, and the steel belt drives the pulley combination winding method to realize the driving of the elevator car by the driving device. Brief description of the drawings

[0020] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present application, so they should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic structural diagram of a counterweightless elevator traction device provided by an embodiment of the present application;

[0022] Figure 2 It is a schematic internal structure diagram of a counterweightless elevator traction device provided by an embodiment of the present application;

[0023] Figure 3 It is a schematic structural diagram of the top mounting relationship of the traction device provided by an embodiment of the present application;

[0024] Figure 4 It is a schematic structural diagram of the bottom mounting relationship of the traction device provided by an embodiment of the present application;

[0025] Figure 5 It is a schematic structural diagram of a steel belt adjusting member provided by an embodiment of the present application.

[0026] In the figure: 1 - multi - layer elevator frame; 11 - elevator opening and closing door; 2 - driving device; 3 - car; 4 - steel belt; 5 - first pulley; 6 - second pulley; 7 - third pulley; 8 - steel belt adjusting member; 81 - guiding part; 811 - fixed seat; 812 - guiding roller; 82 - mounting and connecting seat; 83 - adjusting part; 831 - U - shaped frame; 832 - sliding plate; 833 - height adjusting rod; 834 - spring; 835 - nut; 9 - steel belt connecting seat. Specific embodiments

[0027] The following will describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application.

[0028] Please refer to Figures 1 - 5 , the present application provides a counterweightless elevator traction device, including a multi - layer elevator frame 1 and a steel belt 4.

[0029] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4, a driving device 2 is installed at the top of the multi - layer elevator frame 1. A car 3 is arranged inside the multi - layer elevator frame 1. First pulleys 5 and second pulleys 6 are installed at both the top and bottom of the car 3, and a third pulley 7 is installed at the bottom inside the multi - layer elevator frame 1. One end of the steel belt 4 is connected to the top of the multi - layer elevator frame 1, and then the other end of the steel belt 4 successively bypasses the first pulley 5, the driving device 2, one third pulley 7, the second pulley 6 and the other third pulley 7 and is connected to one side of the bottom end of the multi - layer elevator frame 1. Among them, when the car 3 needs to move, the driving device 2 is started. The driving device 2 causes the steel belt 4 to be disturbed through the first pulley 5, the second pulley 6 and the third pulley 7, realizing the up - and - down operation of the car 3 inside the multi - layer elevator frame 1. The whole device adopts an ultra - thin multi - layer elevator frame 1 hoistway, without a counterweight design. The steel belt 4 drives the pulley combination winding method to realize the driving of the elevator car 3 by the driving device 2. By installing the driving device 2 at the top of the multi - layer elevator frame 1, the pit can be made small, and a pit of 200 mm can be achieved. Without a counterweight setting, the requirement of the car 3 of the same size for the hoistway size is greatly reduced. Through the setting of the steel belt 4, the distance between the car 3 wall and the multi - layer elevator frame 1 is very small. Under the same - sized hoistway, the car 3 can be made as large as possible, increasing the number of passengers carried.

[0030] In this embodiment, at least two first pulleys 5, second pulleys 6 and third pulleys 7 are provided, making the car 3 more stable when moving up and down.

[0031] Please refer to Figure 5, in this embodiment, a steel belt adjusting member 8 is installed outside the multi-layer elevator frame 1, and the other end of the steel belt 4 is connected to the steel belt adjusting member 8. The steel belt adjusting member 8 includes a guiding portion 81, a mounting connection seat 82, and an adjusting portion 83. The guiding portion 81 is installed at the bottom of the multi-layer elevator frame 1, the mounting connection seat 82 is installed outside the bottom of the multi-layer elevator frame 1, the adjusting portion 83 is installed on the mounting connection seat 82, and the other end of the steel belt 4 passes through the bottom wall of the multi-layer elevator frame 1, bypasses the guiding portion 81, and is connected to the adjusting portion 83. The adjusting portion 83 includes a U-shaped frame 831 with first ear plates at both ends. A height adjusting rod 833 passes through the first ear plates on the top and bottom walls of the U-shaped frame 831. A sliding plate 832 is provided on the two height adjusting rods 833 together. The sliding plate 832 is connected to the steel belt 4. Springs 834 are sleeved on the two height adjusting rods 833 inside the U-shaped frame 831. Nuts 835 are screwed at the tops of the two height adjusting rods 833. The guiding portion 81 includes a fixed seat 811. The fixed seat 811 is installed at the bottom of the multi-layer elevator frame 1, and a guiding roller 812 is installed inside the fixed seat 811. The steel belt 4 bypasses the guiding roller 812. Second ear plates are provided on both sides of the top and bottom ends of the sliding plate 832, and the second ear plates on both sides respectively pass through the two height adjusting rods 833 movably. The springs 834 are respectively sleeved outside the height adjusting rods 833 between the two second ear plates. A connecting roller is installed on the sliding plate 832, and the steel belt 4 is arranged on the connecting roller. Among them, when it is necessary to adjust the tightness of the steel belt 4, the two nuts 835 are respectively rotated, so that the nuts 835 are screwed on the height adjusting rods 833, so that the springs 834 are contracted or expanded. When the springs 834 are contracted or expanded, the sliding plate 832 is driven to slide up and down, thereby driving the steel belt 4 to move up or down, realizing the adjustment of the tightness of the steel belt 4. Through the steel belt adjusting member 8, the tightness of the steel belt 4 can be adjusted, which can make the car 3 more stable during use and also improve the service life of the steel belt 4.

[0032] In this embodiment, a steel belt connection seat 9 is installed at the top of the multi-layer elevator frame 1, and the top end of the steel belt 4 is connected to the steel belt connection seat 9. Among them, the top end of the steel belt 4 is connected to the top of the multi-layer elevator frame 1 through the steel belt connection seat 9.

[0033] When specifically arranged, elevator opening and closing doors 11 are provided at the floor exits corresponding to the multi-layer elevator frame 1. Among them, the elevator opening and closing doors 11 are used to open the elevator car 3 to facilitate people to enter and exit the car 3.

[0034] The working principle of this counterweightless elevator traction device:

[0035] When the car 3 needs to move, the driving device 2 is started. The driving device 2 causes the steel belt 4 to be disturbed through the first pulley 5, the second pulley 6 and the third pulley 7, so as to realize the up and down movement of the car 3 inside the multi-layer elevator frame 1. The whole device adopts an ultra-thin multi-layer elevator frame 1 hoistway without a counterweight design. The winding method of the pulley combination is driven by the steel belt 4 to realize the driving of the elevator car 3 by the driving device 2. By installing the driving device 2 at the top of the multi-layer elevator frame 1, the pit can be made small, and a pit of 200 mm can be achieved. Without the counterweight setting, the requirement of the car 3 of the same size for the hoistway size is greatly reduced. Through the setting of the steel belt 4, the distance between the car 3 wall and the multi-layer elevator frame 1 is very small. Under the hoistway of the same size, the car 3 can be made as large as possible to increase the number of passengers carried.

[0036] It should be noted that the specific model and specification of the driving device 2 need to be selected and determined according to the actual specifications of the device, etc. The specific selection calculation method adopts the existing technology in this field, so it will not be elaborated in detail.

[0037] The power supply and principle of the driving device 2 are clear to those skilled in the art and will not be described in detail here.

[0038] The above are only the embodiments of the present application and are not used to limit the protection scope of the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

Claims

1. A counterweightless elevator traction device, characterized in that, it includes a multi-layer elevator frame (1) and a steel belt (4). A driving device (2) is installed at the top of the multi-layer elevator frame (1). A car (3) is arranged inside the multi-layer elevator frame (1). First pulleys (5) and second pulleys (6) are installed at both the top and bottom of the car (3). And a third pulley (7) is installed at the inner bottom of the multi-layer elevator frame (1). One end of the steel belt (4) is connected to the top of the multi-layer elevator frame (1). Then the other end of the steel belt (4) sequentially bypasses the first pulley (5), the driving device (2), one of the third pulleys (7), the second pulley (6) and the other third pulley (7) and is connected to one side of the bottom end of the multi-layer elevator frame (1).

2. The counterweightless elevator traction device according to claim 1, characterized in that, a steel belt adjusting member (8) is installed outside the multi-layer elevator frame (1), and the other end of the steel belt (4) is connected to the steel belt adjusting member (8).

3. The counterweightless elevator traction device according to claim 2, characterized in that, the steel belt adjusting member (8) includes a guiding part (81), a mounting connection seat (82) and an adjusting part (83). The guiding part (81) is installed at the bottom of the multi-layer elevator frame (1). The mounting connection seat (82) is installed outside the bottom of the multi-layer elevator frame (1). The adjusting part (83) is installed on the mounting connection seat (82). The other end of the steel belt (4) passes through the bottom wall of the multi-layer elevator frame (1) and bypasses the guiding part (81) and is connected to the adjusting part (83).

4. The counterweightless elevator traction device according to claim 3, characterized in that, the adjusting part (83) includes a U-shaped frame (831) with first ear plates at both ends. A height adjusting rod (833) penetrates through the first ear plates on the top and bottom walls of the U-shaped frame (831). A sliding plate (832) is jointly arranged on the two height adjusting rods (833). The sliding plate (832) is connected to the steel belt (4). Springs (834) are sleeved on the two height adjusting rods (833) inside the U-shaped frame (831). Nuts (835) are screwed at the tops of the two height adjusting rods (833).

5. The counterweightless elevator traction device according to claim 3, characterized in that, the guiding part (81) includes a fixed seat (811). The fixed seat (811) is installed at the bottom of the multi-layer elevator frame (1). A guiding roller (812) is installed inside the fixed seat (811). The steel belt (4) bypasses the guiding roller (812).

6. The counterweightless elevator traction device according to claim 4, characterized in that, second ear plates are arranged on both sides of the top and bottom of the sliding plate (832), and the second ear plates on both sides respectively pass through the two height adjusting rods (833) movably.

7. The counterweightless elevator traction device according to claim 6, characterized in that, The spring (834) is sleeved on the outer side of the height adjusting rod (833) between the two second ear plates respectively.

8. A counterweightless elevator traction device according to claim 4, wherein, A connecting roller is installed on the sliding plate (832), and the steel belt (4) is arranged on the connecting roller.

9. A counterweightless elevator traction device according to claim 1, wherein, A steel belt connecting seat (9) is installed at the top of the multi-story elevator frame (1), and the top end of the steel belt (4) is connected to the steel belt connecting seat (9).

10. A counterweightless elevator traction device according to claim 1, wherein, An elevator opening and closing door (11) is provided at the floor exit corresponding to the multi-story elevator frame (1).

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