Multi-traction type elevator

Abstract

The utility model discloses a multiple traction type elevator which comprises a lift car, a sliding rail set and at least one pair of traction mechanisms, the sliding rail set comprises a set of first sliding rails, the first sliding rails are vertically installed on an elevator shaft, the lift car is installed on the first sliding rails in an up-and-down sliding mode, and the traction mechanisms are installed on the lift car in an up-and-down sliding mode. Each traction mechanism comprises a set of traction ropes and a traction component, each traction component comprises a traction wheel and a driving assembly, the traction ropes are wound around the traction wheels and connected to the lift car, and the traction ropes of each pair of traction mechanisms are symmetrically distributed with the central axis of the lift car as the reference. The traction wheel is installed on the driving assembly and can be driven by the driving assembly to rotate so as to drive the lift car to ascend and descend by driving the traction rope. In the process, the lift car is subjected to multiple traction effects, stable lifting of the lift car is ensured, the overall service life is prolonged, and the use safety is improved.

Description

Technical Field

[0001] This utility model relates to the field of elevator technology, and in particular to a multi-traction elevator. Background Technology

[0002] Elevators are essential transportation tools in high-rise buildings. According to the driving method, elevators can be divided into traction drive, hydraulic drive, etc. Among them, traction drive has many advantages such as safety and reliability, unlimited lifting height, and easy control of elevator speed. Therefore, traction drive elevators have gradually become the mainstream elevator products.

[0003] In traction-driven elevators, multiple traction ropes are typically wound around the traction sheave of the same traction machine and connected to the car. The car moves up and down by the traction ropes and the traction machine. In practical use, this type of single-traction elevator experiences high loads on the traction ropes and traction machine, resulting in a shorter service life and higher maintenance costs. Furthermore, if a single-traction elevator malfunctions, the car may stop moving, trapping passengers inside. In such cases, assistance from staff is necessary, leading to lower safety and convenience. Utility Model Content

[0004] To solve the above-mentioned technical problems and achieve at least one advantage of this utility model, this utility model provides a multi-traction elevator, which includes:

[0005] The car;

[0006] A slide rail assembly, the slide rail assembly including a set of first slide rails, the first slide rails being vertically installed in the elevator shaft, and the car being slidably installed on the first slide rails;

[0007] At least one pair of traction mechanisms are located at the top of the elevator shaft. Each traction mechanism includes a set of traction ropes and traction components. Each traction component includes a traction sheave and a drive assembly. The traction ropes are wound around the traction sheave and connected to the car. The traction ropes of each pair of traction mechanisms are symmetrically distributed with reference to the central axis of the car. The traction sheave is mounted on the drive assembly and can be driven by the drive assembly to rotate, thereby driving the car to rise and fall by driving the traction ropes.

[0008] According to one embodiment of the present invention, a set of two first slide rails are provided, the two first slide rails are arranged relatively apart and the distance between them is adapted to the size of the car, and the car is slidably arranged between the two first slide rails.

[0009] According to one embodiment of the present invention, the traction rope can be wound up and unwound by the traction sheave to drive the car to rise and fall.

[0010] According to one embodiment of the present invention, the slide rail assembly further includes two sets of second slide rails, which are arranged in the elevator shaft in a manner parallel to the first slide rail. The multi-traction elevator also includes two pairs of counterweights, which are respectively installed on the two sets of second slide rails and symmetrically distributed on both sides of the car. A set of traction ropes is partially wound around the outer periphery of each traction sheave. Each set of traction ropes is partially located on both sides of the corresponding traction sheave, and the portions located on both sides of the corresponding traction sheave extend downward to connect with the car and one of the counterweights respectively. When the traction sheave rotates, the traction rope is driven by the friction between itself and the traction sheave. Either the car or the counterweight is driven by the traction rope and its own weight, and the other is driven by the traction rope and the tension applied to it by the former, and rises.

[0011] According to one embodiment of the present invention, each group of second slide rails is provided with two slide rails, the two slide rails are arranged relatively apart and the distance between them is adapted to the size of the counterweight, and each counterweight is slidably arranged between the two slide rails of the group.

[0012] According to one embodiment of the present invention, the elevator car includes a car body and at least two sets of first return rope pulleys. Each pair of first return rope pulleys is symmetrically distributed with reference to the central axis of the car body. The first return rope pulleys are rotatably mounted on the car body, and the car body is slidably mounted on the first slide rail. The counterweight includes a counterweight body and at least one second return rope pulley. The second return rope pulley is rotatably mounted on the counterweight body, and the counterweight body is slidably mounted on the second slide rail. The portions of each set of traction ropes located on both sides of the corresponding traction pulleys are respectively wound around the lower circumference of one set of first return rope pulleys and one set of second return rope pulleys of the counterweight and then extended upward to be fixed to the top wall of the elevator shaft. When the traction pulleys rotate, the traction ropes are driven by the frictional force between themselves and the traction pulleys to drive the first return rope pulleys and the second return rope pulleys to rotate, and transmit force to the car body and the counterweight body through the first return rope pulleys and the second return rope pulleys respectively.

[0013] According to one embodiment of the present invention, each group of first return rope pulleys is provided with two pulleys, and the two pulleys of each group are spaced apart and symmetrically distributed with reference to the central axis of the machine car. The traction rope of each group is simultaneously wrapped around the lower circumference of the two pulleys of the group, so that the traction rope transmits the force to the machine car through the corresponding two pulleys of the first return rope.

[0014] According to one embodiment of the present invention, the car includes a body and a door. The body is slidably mounted on the first slide rail, and the first return rope wheel is rotatably mounted on the body. The door is openable and closable mounted on the body.

[0015] According to one embodiment of the present invention, the multi-traction elevator further includes multiple landing doors, which are arranged vertically at intervals and are closable and installed on the side wall of the elevator shaft. The car can be driven to rise and fall by the traction rope so that the car door corresponds to the landing door. When the car door and the landing door correspond, the car door and the landing door can be controlled to open simultaneously.

[0016] According to one embodiment of the present invention, the multi-traction elevator further includes a set of safety clamps, the safety clamps are installed in the car and each safety clamp corresponds to a first slide rail, and each safety clamp is configured to clamp a first slide rail to brake the car when the car moves at excessive speed. Attached Figure Description

[0017] Figure 1 A structural schematic diagram of the multi-traction elevator of this utility model is shown.

[0018] Figure 2 This diagram shows a cross-sectional perspective view of the structure of the multi-traction elevator of this invention.

[0019] Figure 3 A side sectional perspective view of the structure of the multi-traction elevator of this utility model is shown. Detailed Implementation

[0020] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0021] Those skilled in the art should understand that, in the disclosure of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0022] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0023] refer to Figures 1 to 3 A preferred embodiment of the multi-traction elevator according to the present invention will be described in detail below. The multi-traction elevator includes a car 10, at least one pair of traction mechanisms 20, and a slide rail assembly 30. The slide rail assembly 30 includes a set of first slide rails 31, which are vertically installed in the elevator shaft. The car 10 is slidably installed on the first slide rails 31. The traction mechanism 20 is located at the top of the elevator shaft. The traction mechanism 20 is installed on the car 10 and can drive the car 10 to slide up and down along the first slide rails 31 within the elevator shaft.

[0024] Preferably, a set of two first slide rails 31 are provided, the two first slide rails 31 are arranged relative to each other and the distance between them is adapted to the size of the car 10, and the car 10 is slidably arranged between the two first slide rails 31.

[0025] The traction mechanism 20 includes a set of traction ropes 21 and a traction component 22. The traction component 22 includes a traction sheave 221 and a drive assembly 222. The traction ropes 21 are wound around the traction sheave 221 and connected to the car 10. The traction sheave 221 is mounted on the drive assembly 222 and can be driven by the drive assembly 222 to rotate, thereby driving the car 10 to rise and fall by driving the traction ropes 21. The traction ropes 21 of each pair of traction mechanisms 20 are symmetrically distributed with reference to the central axis of the car 10 to uniformly transmit force to the car 10. During the rising and falling of the car 10, the car 10 is subjected to multiple traction actions, ensuring that the car 10 can rise and fall stably.

[0026] In addition, at least one pair of traction mechanisms 20 simultaneously drives the car 10 to rise and fall, so that the load is shared by at least one pair of traction mechanisms 20. Compared with using a single one, this reduces the load on each traction mechanism 20, increases its service life, and if one of the traction mechanisms 20 in the pair fails, the car 10 can still rise and fall under the action of the other traction mechanism 20, realizing temporary single traction. Compared with common single traction elevators, this avoids the situation of being trapped in the elevator, and improves the safety and convenience of use.

[0027] Preferably, the drive component 222 is implemented to include a motor.

[0028] In one embodiment, the traction rope 21 can be wound up by the traction sheave 221 to drive the car 10 to rise and fall.

[0029] refer to Figures 2 to 3 Preferably, the slide rail assembly 30 further includes two sets of second slide rails 32, which are arranged in the elevator shaft parallel to the first slide rail 31. The multi-traction elevator also includes two pairs of counterweights 40, which are respectively installed on the two sets of second slide rails 32 and symmetrically distributed on both sides of the car 10. A set of traction ropes 21 is partially wound around the outer periphery of each traction sheave 221, and each set of traction ropes 21 is partially located on both sides of the corresponding traction sheave 221, with the portions on both sides of the corresponding traction sheave 221 extending downward to connect to the car 10 and one of the counterweights 40 respectively. When the traction sheave 221 rotates, the traction rope 21 is driven by the friction between itself and the traction sheave 221. Either the car 10 or the counterweight 40 is driven by the traction rope 21 and its own weight, while the other is driven by the traction rope 21 and the tension exerted on it by the former, so that the two counterweights 40 cooperate to balance the weight of the car 10, reduce the load on the two drive components 222, and further improve the overall service life.

[0030] Preferably, each group of second slide rails 32 is provided with two, the two second slide rails 32 are arranged relatively apart and the distance between them is adapted to the size of the counterweight 40, and each counterweight 40 is arranged between the two second slide rails 32 of the group, so that when the counterweight 40 is driven to rise and fall, the counterweight 40 can slide stably along the corresponding two second slide rails 32.

[0031] Preferably, the elevator car 10 includes a car body 11 and at least two sets of first return rope pulleys 12, with each pair of first return rope pulleys 12 symmetrically distributed with reference to the central axis of the car body 11. The first return rope pulleys 12 are rotatably mounted to the car body 11, and the car body 11 is slidably mounted to the first slide rail 31. The counterweight 40 includes a pair of weight bodies 41 and at least one second return rope pulley 42, with the second return rope pulley 42 rotatably mounted to the counterweight body 41, and the counterweight body 41 slidably mounted to the second slide rail 32. The portions of each set of traction ropes 21 located on both sides of the corresponding traction pulley 221 are respectively wound around the lower circumference of a set of first return rope pulleys 12 and a second return rope pulley 42 of the counterweight 40 and then extended upward to be fixed to the top wall of the elevator shaft. When the traction sheave 221 rotates, the traction rope 21 is driven by the friction between itself and the traction sheave 221, thereby driving the first return rope sheave 12 and the second return rope sheave 42 to rotate. The first return rope sheave 12 and the second return rope sheave 42 then transmit forces to the elevator car 11 and the counterweight 41, respectively. During this process, the first return rope sheave 12 and the second return rope sheave 42 change the direction of the traction rope 21, distributing the forces exerted on it by the elevator car 11 and the counterweight 41 to the top wall of the elevator shaft. This reduces the load on the traction component 22, decreases the power loss of the drive assembly 222, and extends the lifespan of the traction rope 21.

[0032] Preferably, each group of first return rope pulleys 12 has two pulleys, and the two pulleys 12 in each group are spaced apart and symmetrically distributed with reference to the central axis of the machine car 11. Each group of traction ropes 21 simultaneously wraps around the lower circumference of the two first return rope pulleys 12 in one group, so that the traction ropes 21 transmit force evenly to the machine car 11 through the corresponding two first return rope pulleys 12. In this way, through the coordinated action of at least one pair of traction mechanisms 20 and at least two groups of first return rope pulleys 12, the machine car 11 can be driven and stably raised and lowered.

[0033] Preferably, the first return rope pulley 12 is disposed at the bottom of the machine compartment 11.

[0034] Preferably, the second return rope pulley 42 is disposed on the top of the counterweight 41.

[0035] refer to Figure 2The multi-traction elevator further includes a set of safety clamps 50, the number of which is the same as the number of the first slide rails 31. Each safety clamp 50 is installed in the car 11, and each safety clamp 50 corresponds to one of the first slide rails 31. Each safety clamp 50 is configured to clamp one of the first slide rails 31 to brake the car 11 when it moves at excessive speed, providing effective protection for safe operation.

[0036] refer to Figures 2 to 3 The cabin 11 includes a body 111 and a door 112. The body 111 is slidably mounted on the first slide rail 31, and the first return rope pulley 12 is rotatably mounted on the body 111. The door 112 is openable and closable on the body 111 to allow people or goods to enter or exit. During lifting, the body 111 and the door 112 form a closed space, increasing safety during use.

[0037] refer to Figure 1 and Figure 3 The multi-traction elevator also includes multiple landing doors 60, which are arranged vertically at intervals and are closable and mounted on the side wall of the elevator shaft. The car 11 can be driven up and down by the traction rope 21 to align the car door 112 with the landing door 60. When the car door 112 and the landing door 60 are aligned, they can be controlled to open simultaneously.

[0038] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The advantages of the present invention have been fully and effectively realized. The functions and structural principles of the present invention have been shown and explained in the embodiments, and any modifications or variations may be made to the implementation of the present invention without departing from the stated principles.

Claims

1. A multi-traction elevator, characterized in that, The multi-traction elevator includes: The car; A slide rail assembly, the slide rail assembly including a set of first slide rails, the first slide rails being vertically installed in the elevator shaft, and the car being slidably installed on the first slide rails; At least one pair of traction mechanisms are located at the top of the elevator shaft. Each traction mechanism includes a set of traction ropes and traction components. Each traction component includes a traction sheave and a drive assembly. The traction ropes are wound around the traction sheave and connected to the car. The traction ropes of each pair of traction mechanisms are symmetrically distributed with reference to the central axis of the car. The traction sheave is mounted on the drive assembly and can be driven by the drive assembly to rotate, thereby driving the car to rise and fall by driving the traction ropes.

2. The multi-traction elevator according to claim 1, characterized in that, A set of first slide rails is provided in two parts, the two first slide rails are arranged relative to each other and the distance between them is adapted to the size of the car, and the car is slidably arranged between the two first slide rails.

3. The multi-traction elevator according to claim 2, characterized in that, The traction rope can be wound up and down by the traction sheave to drive the car to rise and fall.

4. The multi-traction elevator according to claim 2, characterized in that, The slide rail assembly also includes two sets of second slide rails, which are arranged parallel to the first slide rails in the elevator shaft. The multi-traction elevator also includes two pairs of counterweights, which are respectively installed on the two sets of second slide rails and symmetrically distributed on both sides of the car. A set of traction ropes is partially wound around the outer periphery of each traction sheave. Each set of traction ropes is partially located on both sides of the corresponding traction sheave, and the portions on both sides of the corresponding traction sheave extend downward to connect to the car and one of the counterweights respectively. When the traction sheave rotates, the traction ropes are driven by the friction between themselves and the traction sheave. Either the car or the counterweight is driven by the traction ropes and its own weight, and the other is driven by the traction ropes and the tension applied to it by the former, and rises.

5. The multi-traction elevator according to claim 4, characterized in that, Each set of the second slide rails has two rails, which are arranged relatively apart and the distance between them is adapted to the size of the counterweight. Each counterweight is slidably arranged between the two rails of the set.

6. The multi-traction elevator according to claim 4 or 5, characterized in that, The elevator car includes a car body and at least two sets of first return rope pulleys. Each pair of first return rope pulleys is symmetrically distributed with reference to the central axis of the car body. The first return rope pulleys are rotatably mounted on the car body, and the car body is slidably mounted on the first slide rail. The counterweight includes a counterweight body and at least one second return rope pulley. The second return rope pulley is rotatably mounted on the counterweight body, and the counterweight body is slidably mounted on the second slide rail. The portions of each set of traction ropes located on both sides of the corresponding traction pulleys are respectively wrapped around the lower circumference of one set of first return rope pulleys and one set of second return rope pulleys of the counterweight and then extended upward to be fixed to the top wall of the elevator shaft. When the traction pulleys rotate, the traction ropes are driven by the friction between themselves and the traction pulleys to drive the first return rope pulleys and the second return rope pulleys to rotate, and transmit forces to the car body and the counterweight body through the first return rope pulleys and the second return rope pulleys respectively.

7. The multi-traction elevator according to claim 6, characterized in that, Each group has two first return rope pulleys, and the two first return rope pulleys in each group are spaced apart and symmetrically distributed with reference to the central axis of the machine car. The traction ropes in each group are simultaneously wrapped around the lower circumference of the two first return rope pulleys in the group, so that the traction ropes transmit the force to the machine car through the corresponding two first return rope pulleys.

8. The multi-traction elevator according to claim 6, characterized in that, The cabin includes a body and a door. The body is slidably mounted on the first slide rail, and the first return rope pulley is rotatably mounted on the body. The door is openable and closable mounted on the body.

9. The multi-traction elevator according to claim 8, characterized in that, The multi-traction elevator also includes multiple landing doors, which are arranged vertically at intervals and are installed on the side wall of the elevator shaft in an openable manner. The car can be driven up and down by the traction rope so that the car door corresponds to the landing door. When the car door and the landing door are corresponding, the car door and the landing door can be controlled to open simultaneously.

10. The multi-traction elevator according to claim 6, characterized in that, The multi-traction elevator also includes a set of safety clamps, which are installed in the car and each safety clamp corresponds to a first slide rail. Each safety clamp is configured to clamp a first slide rail to brake the car when the car moves at excessive speed.

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