A combined and independent hybrid drive double-car elevator and its driving method

Abstract

The present invention discloses a combined and independent hybrid drive double-car elevator and a driving method thereof, which comprises a main lifting system, wherein the main lifting system comprises a main car and a main traction machine, the double-car elevator further comprises an auxiliary lifting system which can move with the main lifting system, can also move independently relative to the main lifting system, and can drive the main car to move, and a balance rope guide wheel group arranged below the auxiliary lifting system, the auxiliary lifting system comprises an auxiliary car arranged below the main car, an auxiliary control wheel group installed below the main car, an auxiliary traction rope connected to the auxiliary car and wound around the auxiliary control wheel group, and an auxiliary traction machine, the main car and the auxiliary car can not only operate independently, but also can maintain the vertical distance between the main car and the auxiliary car unchanged by mechanical measures of releasing and applying brakes to the auxiliary control wheel, so that the main car and the auxiliary car can rely on one traction machine for joint operation, thereby overcoming the operation problem of the twin elevators when a certain traction machine fails.

Description

Technical Field

[0001] The present invention belongs to the field of elevator equipment, and in particular relates to a combined and independent hybrid driven double-car elevator and a driving method thereof. Background Art

[0002] The existing twin elevators have a main car and an auxiliary car that operate independently. After the traction machine corresponding to the upper car fails, the upper car pulled by the traction machine cannot work, thereby occupying the space position of the upper shaft and affecting the operation of the lower car, resulting in reduced safety and low transportation efficiency; at the same time, after the traction machine corresponding to the lower car fails, the lower car pulled by the traction machine cannot work, thereby occupying the space position of the lower shaft, which also affects the operation of the upper car, resulting in reduced safety and low transportation efficiency; in addition, when a traction machine malfunctions or the brakes fail, the minimum approach distance between the main car and the auxiliary car cannot be effectively guaranteed; and when the main car and the auxiliary car of the twin elevator are operated in combination with a constant spacing, because each car is actually operated independently, the electronic control accuracy and stability are extremely high, and it is difficult to achieve accurate equal-spacing dual-car operation, and it cannot be applied to the working condition of equal-spacing dual-car operation. In order to overcome the shortcomings of the prior art, the present invention provides a combined and independent hybrid drive double-car elevator and method, so that the double-car elevator can, under the premise of the main car and the auxiliary car being able to operate independently like a twin elevator, also be able to: after a certain traction machine fails, use one traction machine to tow two cars to ensure safe operation and transportation efficiency; at the same time, in view of the disadvantage that twin elevators have high requirements for electrical control accuracy and stability when maintaining combined operation, the present invention adopts a mechanical device to maintain the vertical distance between the main car and the auxiliary car unchanged. Summary of the invention

[0003] The purpose of the present invention is to provide a combined and independent hybrid drive double-car elevator and a driving method thereof, in which the main car and the auxiliary car can not only operate independently, but also can realize the combined drive of the main car and the auxiliary car through mechanical measures of releasing and applying brakes to the auxiliary control wheel, thereby making the elevator operation safer.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: a combined and independent hybrid drive double-car elevator, which includes a main lifting system, the main lifting system includes a main car and a main traction machine, the double-car elevator also includes an auxiliary lifting system that can move with the main lifting system, can also move independently relative to the main lifting system, and can drive the main car to move, and a balance rope guide wheel group arranged below the auxiliary lifting system, the auxiliary lifting system includes an auxiliary car arranged below the main car, an auxiliary control wheel group installed below the main car, and an auxiliary control wheel group connected to the auxiliary car. The auxiliary traction rope and auxiliary traction machine are connected to the main car and wound around the auxiliary control wheel group. The auxiliary traction machine has three working states: driving, braking and free rotation. The auxiliary control wheel group has two states: releasing the brake and braking. When the auxiliary control wheel group is braked, the main car and the auxiliary car are driven to move synchronously by the main traction machine alone or driven to move synchronously by the auxiliary traction machine alone or driven to move synchronously by the main traction machine and the auxiliary traction machine respectively. When the auxiliary control wheel group releases the brake, the main car and the auxiliary car are independently driven by the main traction machine and the auxiliary traction machine respectively.

[0005] Optimally, when the driving ratio of the double-car elevator is 1:1,

[0006] The main lifting system also includes a main guide wheel, a main counterweight, a main balancing rope, and a main traction rope connected between the main car and the main counterweight and passing around the main traction machine and the main guide wheel;

[0007] The auxiliary lifting system includes an auxiliary counterweight, an auxiliary upper guide wheel located in the hoistway and above the main car, an auxiliary balance rope guide wheel located in the hoistway and below the auxiliary traction machine, an auxiliary balance rope, and at least two auxiliary control wheel sets and two of them are symmetrically arranged below the main car;

[0008] The balance rope guide wheel group has two balance wheels respectively used to wind the main balance rope and the auxiliary balance rope, and the two balance wheels can rotate relatively independently. One end of the main balance rope is fixedly connected to the lower end of the main counterweight, and the other end is fixedly connected to the bottom of the auxiliary car after passing through the main balance rope guide wheel and one of the balance wheels. One end of the auxiliary balance rope is fixedly connected to the lower end of the auxiliary counterweight, and the other end is fixedly connected to the bottom of the auxiliary car after passing through the auxiliary balance rope guide wheel and one of the balance wheels.

[0009] Furthermore, the auxiliary upper guide wheel and the auxiliary traction machine are respectively located on both sides above the main car.

[0010] Furthermore, each group of the auxiliary control wheel groups is provided with auxiliary control wheels and auxiliary lower guide wheel groups in sequence from the middle to the outer side. The auxiliary control wheels have two states: released braking and braking. The auxiliary traction ropes correspond to one auxiliary control wheel group respectively, and extend upward from the top of the auxiliary car to bypass the corresponding auxiliary control wheels respectively, and then extend downward and bypass the corresponding auxiliary lower guide wheel groups respectively, and then one of them extends upward to the auxiliary upper guide wheel, and then bypasses the auxiliary traction machine and is fixedly connected to the auxiliary counterweight, and the other extends upward and directly bypasses the auxiliary traction machine and is fixedly connected to the auxiliary counterweight.

[0011] Furthermore, each of the auxiliary lower guide wheel groups includes two auxiliary lower guide wheels, and the two outermost auxiliary lower guide wheels in the two auxiliary lower guide wheel groups are respectively located below the auxiliary upper guide wheel and the auxiliary traction machine.

[0012] Optimally, when the drive ratio of the elevator is 2:1,

[0013] The main lifting system also includes a main car return rope pulley installed above the main car, a main guide wheel, a main counterweight, a main counterweight return rope pulley installed on the main counterweight, a main balancing rope and a main traction rope, one end of the main traction rope is fixed in the hoistway and is located above the highest point of the main counterweight travel path, and the other end of the main traction rope is passed around the main counterweight return rope pulley downward, then passed around the main guide wheel upward, then passed around the main traction machine from above, and then passed around the main car return rope pulley downward, and finally extended upward and fixed in the hoistway and is located above the highest point of the main car travel path;

[0014] The auxiliary lifting system includes an auxiliary counterweight, an auxiliary upper guide wheel located in the hoistway and above the main car, an auxiliary balance rope guide wheel located in the hoistway and below the auxiliary traction machine, an auxiliary balance rope, and an auxiliary counterweight return rope wheel installed on the top of the auxiliary car, at least two auxiliary control wheel groups and two of them are symmetrically arranged below the main car, one end of the auxiliary traction rope is fixed in the hoistway and above the highest point of the auxiliary counterweight travel path, and the other end of the auxiliary traction rope is downwardly bypassed by the auxiliary counterweight return rope wheel, then upwardly bypassed by the auxiliary traction machine, and then bypassed by the auxiliary upper guide wheel from above, and then downwardly bypassed by one of the auxiliary control wheel groups, and then downwardly bypassed by the auxiliary car return rope wheel, and then upwardly bypassed by another symmetrical auxiliary control wheel group, and then extended upwardly and fixed in the hoistway and above the highest point of the main car travel path;

[0015] The balance rope guide wheel group has two balance wheels respectively used to wind the main balance rope and the auxiliary balance rope, and the two balance wheels can rotate relatively independently. One end of the main balance rope is fixedly connected to the lower end of the main counterweight, and the other end is fixedly connected to the bottom of the auxiliary car after passing through the main balance rope guide wheel and one of the balance wheels. One end of the auxiliary balance rope is fixedly connected to the lower end of the auxiliary counterweight, and the other end is fixedly connected to the bottom of the auxiliary car after passing through the auxiliary balance rope guide wheel and one of the balance wheels.

[0016] Furthermore, each group of the auxiliary control wheel groups is provided with auxiliary control wheels and auxiliary lower guide wheel groups in sequence from the middle to the outside. The auxiliary control wheels have two states: released braking and braking. One end of the auxiliary traction rope is fixed in the shaft and is located above the highest point of the auxiliary counterweight travel path, and the other end portion thereof passes downwardly around the auxiliary counterweight return rope pulley, and then passes upwardly around the auxiliary traction machine, and then passes from above around the auxiliary upper guide wheel, and then passes downwardly around one of the auxiliary lower guide wheel groups, and then passes upwardly around the auxiliary control wheel, and then passes downwardly around the auxiliary car return rope pulley, and then passes upwardly around another symmetrical auxiliary control wheel, and then passes downwardly around another symmetrical auxiliary lower guide wheel group, and then extends upwardly and is fixed in the shaft and is located above the highest point of the main car travel path.

[0017] The present invention also provides a driving method for a double-car elevator based on a combined and independent hybrid drive, which includes the following steps: first, the auxiliary control wheel releases the brake and becomes a guide wheel, then the main traction machine controls the movement or stillness of the main car, and the auxiliary traction machine controls the movement or stillness of the auxiliary car, and the auxiliary car is independently controlled by the auxiliary traction machine. At this time, the main car and the auxiliary car are operated in independent driving modes.

[0018] The present invention also provides a driving method for a double-car elevator based on combined and independent hybrid drive, which includes the following steps: first, the auxiliary control wheel applies the brake and the auxiliary traction machine releases the drive and brake, at which time the length of the auxiliary traction rope between the auxiliary car and the auxiliary control wheel remains unchanged, and then the main traction machine drives and controls the movement of the main car, and the movement of the main car and the auxiliary car in the vertical direction is controlled by the main traction machine driving the main car movement, and the main car drives the auxiliary car to move together and maintain a fixed distance.

[0019] The present invention also provides a driving method for a double-car elevator based on combined and independent hybrid drive, which includes the following steps: first, the auxiliary control wheel applies the brake and the main traction machine releases the drive and braking. At this time, the length of the auxiliary traction rope between the auxiliary car and the auxiliary control wheel remains unchanged. Subsequently, the auxiliary traction machine drives and controls the movement of the auxiliary car. The movement of the main car and the auxiliary car in the vertical direction is controlled by the auxiliary traction machine driving the auxiliary traction rope. The auxiliary traction rope is braked by the auxiliary control wheel to drive the main car to move together with the auxiliary car and maintain a fixed distance.

[0020] The present invention also provides a driving method for a double-car elevator based on combined and independent hybrid drive, which includes the following steps: first, the auxiliary control wheel applies the brake, then the auxiliary traction machine drives and controls the movement of the auxiliary car, and the main traction machine drives and controls the movement of the main car. The length of the auxiliary traction rope between the auxiliary car and the auxiliary control wheel remains unchanged, and the two traction machines synchronously drive the main car and the auxiliary car to move together, maintain a fixed distance, and make position changes in the vertical direction.

[0021] The beneficial effect of the present invention is that the main car and the auxiliary car can not only operate independently, but also maintain the vertical distance between the main car and the auxiliary car unchanged by mechanical measures of releasing and applying brakes to the auxiliary control wheel, so that the main car and the auxiliary car can rely on a traction machine for joint operation, thereby overcoming the operation problem of the twin elevator when a traction machine fails. In addition, under non-fault conditions, compared with the twin elevators that maintain constant vertical distance joint operation through electrical control measures, the mechanical measures of braking the auxiliary control wheel adopted by the twin car elevator are highly stable and easy to implement, and the mechanical measures can further ensure the minimum approach distance between the main car and the auxiliary car, making the elevator operation safer. In addition, the auxiliary traction machine joint driving method is adopted to realize safe driving under the failure of the main traction machine, that is, when the main traction machine fails, the main traction machine loses power, the auxiliary control wheel releases the brake, and the auxiliary traction machine drives and controls the auxiliary traction rope to drive the auxiliary car to move. When the auxiliary car and the main car have a traction distance, the auxiliary control wheel brakes, and then the auxiliary traction machine drives the main car and the auxiliary car to move together, and maintain a fixed distance, and change the position in the vertical direction to achieve joint movement under the failure of the main traction machine; The main traction machine joint driving method can be used to realize safe driving under the failure of the auxiliary traction machine, that is, when the auxiliary traction machine fails, the auxiliary traction machine loses power, the auxiliary control wheel releases the brake, and the main traction machine drives and controls the main traction rope to drive the main car to move. When the auxiliary car and the main car have a traction distance, the auxiliary control wheel brakes, and then the main traction machine drives the main car and the auxiliary car to move together, and maintain a fixed distance, and change the position in the vertical direction to achieve safe driving under the failure of the auxiliary traction machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a 1:1 driving schematic diagram of a double-car elevator with combined and independent hybrid driving in Embodiment 1;

[0023] Figure 2a-2e It is a schematic diagram of an independent driving method for the main and auxiliary double elevator cars to move independently in the first embodiment;

[0024] Figure 3a-3e It is a schematic diagram of an independent driving method in which the main car moves and the auxiliary car is stationary in the first embodiment;

[0025] Figure 4a-4eis a schematic diagram of the main traction machine joint driving method in the first embodiment;

[0026] Figure 5a-5e is a schematic diagram of the auxiliary traction machine joint driving method in the first embodiment;

[0027] Figure 6a-6e is a schematic diagram of a method for synchronously and jointly driving a main traction machine and an auxiliary traction machine in Embodiment 1;

[0028] Figure 7 It is a 2:1 driving schematic diagram of a double-car elevator with combined and independent hybrid driving in Embodiment 2;

[0029] Figure 8 It is a 2:1 driving schematic diagram of a double-car elevator with joint and independent hybrid driving in Embodiment 3;

[0030] Among them: 1-main traction rope, 2-auxiliary upper guide wheel, 3-auxiliary traction rope, 4-main car, 5-auxiliary control wheel, 6-auxiliary lower guide wheel group, 7-auxiliary car, 8-balance rope guide wheel group, 9-main balance rope guide wheel, 10-auxiliary balance rope guide wheel, 11-main balance rope, 12-auxiliary balance rope, 13-main counterweight, 14-auxiliary counterweight, 15-auxiliary traction machine, 16-main guide wheel, 17-main traction machine, 18-main car return rope wheel, 19 main counterweight return rope wheel, 20-auxiliary car return rope wheel, 21-auxiliary counterweight return rope wheel. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0032] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0034] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] In the present application, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature may be that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature. It should be noted that when an element is referred to as "fixed to" or "set on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0036] Embodiment 1

[0037] like Figure 1As shown in FIG. 6 , the combined and independent hybrid drive double-car elevator comprises a main lifting system, the main lifting system comprises a main car 4 and a main traction machine 17, the double-car elevator also comprises an auxiliary lifting system which can move with the main lifting system, can also move independently relative to the main lifting system, and can drive the main car 4 to move, and a balance rope guide wheel group 88 arranged below the auxiliary lifting system, the auxiliary lifting system comprises an auxiliary car arranged below the main car 4, an auxiliary control wheel group 5 installed below the main car 4, and an auxiliary control wheel group 5 connected to the auxiliary car and wound around the auxiliary control wheel group 5. The traction rope 3 and the auxiliary traction machine 15 have three working states: driving, braking and free rotation. The auxiliary control wheel group 5 has two states: releasing the brake and braking. When the auxiliary control wheel group 5 is braked, the main car 4 and the auxiliary car are driven to move synchronously by the main traction machine 17 alone or driven to move synchronously by the auxiliary traction machine 15 alone or driven to move synchronously by the main traction machine 17 and the auxiliary traction machine 15 alone. When the auxiliary control wheel group 5 is released, the main car 4 and the auxiliary car are driven independently by the main traction machine 17 and the auxiliary traction machine 15 respectively.

[0038] When the driving ratio of the double-car elevator is 1:1, the main lifting system also includes a main guide wheel 16, a main counterweight 13, a main balance rope 11, and a main traction rope 1 connected between the main car 4 and the main counterweight 13 and bypassing the main traction machine 17 and the main guide wheel 16; the auxiliary lifting system includes an auxiliary counterweight 14, an auxiliary upper guide wheel 2 located in the hoistway and above the main car 4, an auxiliary balance rope 12 guide wheel 10 located in the hoistway and below the auxiliary traction machine 15, and an auxiliary control wheel group 5, at least two of which are symmetrically arranged. Below the main car 4; the balance rope guide wheel group 88 has two balance wheels for winding the main balance rope 1 and the auxiliary balance rope 12 respectively, and the two balance wheels can rotate relatively independently. One end of the main balance rope 1 is fixedly connected to the lower end of the main counterweight 13, and the other end is fixedly connected to the bottom of the auxiliary car 7 after passing through the main balance rope 1 guide wheel 99 and one of the balance wheels. One end of the auxiliary balance rope 12 is fixedly connected to the lower end of the auxiliary counterweight, and the other end is fixedly connected to the bottom of the auxiliary car 7 after passing through the auxiliary balance rope 12 guide wheel 10 and one of the balance wheels. The auxiliary upper guide wheel 2 and the auxiliary traction machine 15 are respectively located on both sides above the main car 4. Each set of auxiliary control wheels 5 is provided with auxiliary control wheels 5 and auxiliary lower guide wheel sets 6 in sequence from the middle to the outer side. The auxiliary control wheels 5 have two states: releasing the brake and braking. The auxiliary traction ropes 3 correspond to one auxiliary control wheel set 5 respectively, and extend upward from the top of the auxiliary car 7 to bypass the auxiliary control wheels 5 corresponding to them respectively, and then extend downward and bypass the auxiliary lower guide wheel sets 6 corresponding to them respectively, and then one of them extends upward to the auxiliary upper guide wheel 2, and then bypasses the auxiliary traction machine 15 and is fixedly connected to the auxiliary counterweight 14, and the other extends upward to directly bypass the auxiliary traction machine 15 and is fixedly connected to the auxiliary counterweight 14. Each auxiliary lower guide wheel set 6 includes two auxiliary lower guide wheels, and the two outermost auxiliary lower guide wheels of the two auxiliary lower guide wheel sets 6 are respectively located below the auxiliary upper guide wheel 2 and the auxiliary traction machine 15.

[0039] The present invention is described in detail below in conjunction with the embodiments shown in the accompanying drawings:

[0040] Figure 1 An advantageous embodiment of a double-car elevator with combined and independent hybrid drive according to the present invention is schematically presented.

[0041] The main car 4 and the auxiliary car 7 are arranged in an upper and lower position. After connecting the top of the main car 4, the main traction rope 1 passes around the main traction machine 17 and the main guide wheel 16, and is connected to the main counterweight 13.

[0042] An auxiliary lower guide wheel set 6 and an auxiliary control wheel 5 are fixedly installed at the bottom of the main car 4, wherein the auxiliary lower guide wheel set 6 has two guide wheels on the left and right sides of the main car 4, respectively, and these guide wheels are symmetrically distributed with respect to the main car 4. There are two auxiliary control wheels 5, which are symmetrically distributed with respect to the main car 4.

[0043] There is one auxiliary hoisting rope 3 on each side of the auxiliary car 7 and they are symmetrically distributed. After one auxiliary hoisting rope 3 is connected to the auxiliary car 7, it passes over the auxiliary control wheel 5 on the left side of the main car 4 from bottom to top, and then passes over the two guide wheels in the auxiliary lower guide wheel group 6 on the left side of the main car 4 from top to bottom, and then is pulled upward, passes over the auxiliary upper guide wheel 2 installed at the same left and right positions as the auxiliary lower guide wheel group 6 on the leftmost guide wheel of the main car 4, and then passes over the auxiliary traction machine 15 and then is connected to the auxiliary counterweight 14. After the other auxiliary hoisting rope 3 is connected to the auxiliary car 7, it passes over the auxiliary control wheel 5 on the right side of the main car 4 from bottom to top, and then passes over the two guide wheels in the auxiliary lower guide wheel group 6 on the right side of the main car 4 from top to bottom, and then is pulled upward, passes over the auxiliary traction machine 15 installed at the same left and right positions as the auxiliary lower guide wheel group 6 on the rightmost guide wheel of the main car 4, and then is connected to the auxiliary counterweight 14. Thereby, the auxiliary traction rope 3 between the auxiliary lower guide wheel group 6 and the auxiliary upper guide wheel 2 is in a vertical state, and the auxiliary traction rope 3 between the auxiliary lower guide wheel group 6 and the auxiliary traction machine 15 is in a vertical state.

[0044] A main balance rope guide wheel 9 is arranged directly below the main guide wheel 16, an auxiliary balance rope guide wheel 10 is arranged directly below the auxiliary traction machine 15, and a balance rope guide wheel group 8 is arranged directly below the auxiliary car 7. The main balance rope 1 connected to the main counterweight 13 is connected to the bottom of the main car 4 after passing through the main balance rope guide wheel 9 and the balance rope guide wheel group 8 in sequence. The auxiliary balance rope 12 connected to the auxiliary counterweight 14 is connected to the bottom of the main car 4 after passing through the auxiliary balance rope guide wheel 10 and the balance rope guide wheel group 8 in sequence.

[0045] Among all the guide wheels, only the auxiliary lower guide wheel group 6 and the auxiliary control wheel 5 are installed at the bottom of the main car 4 which can move vertically relative to the shaft. The other guide wheels and the main traction machine 17 and auxiliary traction machine 15 in the elevator equipment are fixed relative to the shaft.

[0046] The auxiliary traction machine 15 has three states: driving, braking, and no driving and no braking. The auxiliary control wheel 5 has two states: releasing the brake and applying the brake.

[0047] In the combined and independent hybrid drive double-car elevator of the present invention, the main car 4 is independently controlled by the main traction machine 17, and the working states of the auxiliary traction machine 15, the auxiliary control wheel 5 and the main traction machine 17 are changed, corresponding to the following driving method of the double-car elevator:

[0048] In FIG2 , the main traction machine 17 drives and controls the movement of the main car 4; the auxiliary control wheel 5 releases the brake and turns into a guide wheel, and the auxiliary traction machine 15 drives and controls the movement of the auxiliary car 7. The auxiliary car 7 is independently controlled by the auxiliary traction machine 15, and the positions of the two cars in the vertical direction change independently of each other, that is, the independent drive of the movement of the two cars is realized;

[0049] In FIG3 , the main traction machine 17 drives and controls the movement of the main car 4; the auxiliary control wheel 5 releases the brake and turns into a guide wheel, the auxiliary traction machine 15 brakes and controls the auxiliary car 7 to remain stationary, and the position of the main car 4 in the vertical direction changes independently, that is, the main car 4 moves and the auxiliary car 7 is independently driven;

[0050] In FIG4 , the main traction machine 17 drives and controls the movement of the main car 4, the auxiliary control wheel 5 applies the brake, and the auxiliary traction machine 15 releases the drive and brake, and the length of the auxiliary traction rope 3 between the auxiliary car 7 and the auxiliary control wheel 5 remains unchanged. The movement of the two cars in the vertical direction is controlled by the main traction machine 17 driving the main car 4, and the main car 4 drives the auxiliary car 7 to move together, and maintain a fixed distance, and change the position in the vertical direction, that is, the main traction machine 17 is jointly driven;

[0051] The main hoisting machine 17 joint driving method can realize safe driving when the auxiliary hoisting machine 15 fails, that is, when the auxiliary hoisting machine 15 fails, the auxiliary hoisting machine 15 loses power, the auxiliary control wheel 5 releases the brake, and the main hoisting machine 17 drives and controls the main traction rope 1 to drive the main car 4 to move. When the auxiliary car 7 and the main car 4 have a traction distance, the auxiliary control wheel 5 brakes, and then the main hoisting machine 17 drives the main car 4 and the auxiliary car 7 to move together, maintain a fixed distance, and change the position in the vertical direction, thereby realizing the joint movement under the failure of the auxiliary hoisting machine 15.

[0052] In Fig. 5, the auxiliary traction machine 15 drives and controls the movement of the auxiliary car 7, the auxiliary control wheel 5 applies the brake, and the main traction machine 17 releases the drive and brake, the length of the auxiliary traction rope 3 between the auxiliary car 7 and the auxiliary control wheel 5 remains unchanged, and the movement of the two cars in the vertical direction is controlled by the auxiliary traction machine 15 driving the auxiliary traction rope 3, and the auxiliary traction rope 3 is braked by the auxiliary control wheel 5 to drive the main car 4 and the auxiliary car 7 to move together, and keep a fixed distance, and change the position in the vertical direction, that is, the auxiliary traction machine 15 is jointly driven;

[0053] The auxiliary traction machine 15 joint driving method can realize safe driving under the failure of the main traction machine 17, that is, when the main traction machine 17 fails, the main traction machine 17 loses power, the auxiliary control wheel 5 releases the brake, and the auxiliary traction machine 15 drives and controls the auxiliary traction rope 3 to drive the auxiliary car 7 to move. When the auxiliary car 7 and the main car 4 have a traction distance, the auxiliary control wheel 5 brakes, and then the auxiliary traction machine 15 drives the main car 4 and the auxiliary car 7 to move together, and maintain a fixed distance, and change the position in the vertical direction, so as to realize the joint movement under the failure of the main traction machine 17

[0054] In Figure 6, the auxiliary traction machine 15 drives and controls the movement of the auxiliary car 7, and the auxiliary control wheel 5 applies the brake. The main traction machine 17 drives and controls the movement of the auxiliary car 7. The length of the auxiliary traction rope 3 between the auxiliary car 7 and the auxiliary control wheel 5 remains unchanged. The two traction machines synchronously drive the main car 4 and the auxiliary car 7 to move together, maintain a fixed distance, and change their position in the vertical direction, thereby realizing the synchronous joint drive of the main traction machine 17 and the auxiliary traction machine 15.

[0055] Embodiment 2

[0056] like Figure 7 As shown, the fixed positions of the main traction rope 1 and the main and auxiliary traction ropes 3 are on the same side above the main car 4 as the main counterweight and the auxiliary counterweight.

[0057] When the driving ratio of the elevator is 2:1, the main lifting system also includes a main car return rope pulley 18 installed above the main car 4, a main guide pulley 16, a main counterweight 13, a main counterweight return rope pulley 19 installed on the main counterweight 13, a main balancing rope 1 and a main traction rope 1. One end of the main traction rope 1 is fixed in the hoistway and is located above the highest point of the main counterweight 13 travel path, and the other end of the main traction rope 1 is downwardly bypassed by the main counterweight return rope pulley 19, then upwardly bypassed by the main guide pulley 16, and then bypassed by the main traction machine 17 from above. , and then goes downward around the main car return rope wheel 18, and finally extends upward and is fixed in the hoistway and is located above the highest point of the main car 4 travel path; the auxiliary lifting system includes an auxiliary counterweight 14, an auxiliary upper guide wheel 2 located in the hoistway and above the main car 4, an auxiliary balance rope 12 guide wheel 10 located in the hoistway and below the auxiliary traction machine 15, an auxiliary balance rope 12 and an auxiliary counterweight return rope wheel 21 installed on the top of the auxiliary car 7, and at least two auxiliary control wheels 5 are symmetrically arranged on the main car Below the main car 4, one end of the auxiliary traction rope 3 is fixed in the hoistway and is located above the highest point of the auxiliary counterweight travel path, and the other end thereof passes around the auxiliary counterweight return rope pulley 21 downward, then passes around the auxiliary traction machine 15 upward, and then passes around the auxiliary upper guide wheel 2 from above, and then passes around one of the auxiliary control wheel groups 5 downward, and then passes around the auxiliary car return rope pulley 20 downward, and then passes around another symmetrical auxiliary control wheel group 5 upward, and then extends upward and is fixed in the hoistway and is located above the highest point of the travel path of the main car 4; the balance rope guide wheel group 8 has two balance wheels for winding the main balance rope 1 and the auxiliary balance rope 12 respectively, and the two balance wheels can rotate relatively independently, one end of the main balance rope 1 is fixedly connected to the lower end of the main counterweight 13, and the other end passes around the main balance rope 1 guide wheel 9 and one of the balance wheels and then is fixedly connected to the bottom of the auxiliary car 7, one end of the auxiliary balance rope 12 is fixedly connected to the lower end of the auxiliary counterweight, and the other end passes around the auxiliary balance rope 12 guide wheel 10 and one of the balance wheels and then is fixedly connected to the bottom of the auxiliary car 7.

[0058] Each group of auxiliary control wheels 5 is provided with auxiliary control wheels 5 and auxiliary lower guide wheel groups 6 in sequence from the middle to the outside. The auxiliary control wheel 5 has two states: releasing the brake and braking. One end of the auxiliary traction rope 3 is fixed in the shaft and is located above the highest point of the auxiliary counterweight travel path. The other end portion passes around the auxiliary counterweight return rope pulley downward, and then passes around the auxiliary traction machine 15 upward, and then passes around the auxiliary upper guide wheel 2 from above, and then passes around one of the auxiliary lower guide wheel groups 6 downward, and then passes around the auxiliary control wheel 5 upward, and then passes around the auxiliary car return rope pulley 20 downward, and then passes around another symmetrical auxiliary control wheel 5 upward, and then passes around another symmetrical auxiliary lower guide wheel group 6 downward, and then extends upward and is fixed in the shaft and is located above the highest point of the main car 4 travel path.

[0059] Embodiment 3

[0060] like Figure 8 As shown, the fixed positions of the main traction rope 1 and the main and auxiliary traction ropes 3 and the main counterweight and the auxiliary counterweight are on both sides above the main car 4.

[0061] When the driving ratio of the elevator is 2:1, the main lifting system also includes a main car return rope pulley 18 installed above the main car 4, a main guide wheel 16, a main counterweight 13, a main counterweight return rope pulley 19 installed on the main counterweight 13, a main balancing rope 1 and a main traction rope 1, one end of the main traction rope 1 is fixed in the hoistway and is located above the highest point of the main counterweight 13 travel path, and the other end of the main traction rope 1 is passed around the main counterweight return rope pulley 19 downward, and then passed around the main guide wheel 16 upward, and then passed around the main traction machine 17 from above, and then passed around the main car return rope pulley 18 downward, and finally extended upward and fixed in the hoistway and located above the highest point of the main car 4 travel path; the auxiliary lifting system includes an auxiliary counterweight 14, an auxiliary balance rope 12 guide wheel 10 located in the hoistway and below the auxiliary traction machine 15, an auxiliary balance rope 12 and an auxiliary counterweight return rope pulley 21 installed on the top of the auxiliary car 7, and there are at least two auxiliary control wheel groups 5 and two of them are symmetrically arranged below the main car 4 One end of the auxiliary traction rope 3 is fixed in the hoistway and is located above the highest point of the auxiliary counterweight travel path, and the other end thereof passes downward around the auxiliary counterweight return rope pulley 21, then passes upward around the auxiliary traction machine 15, and then passes downward around one of the auxiliary control wheel groups 5, then passes downward around the auxiliary car return rope pulley 20, and then passes upward around another symmetrical auxiliary control wheel group 5, and then extends upward and is fixed in the hoistway and is located above the highest point of the main car 4 travel path; the balance rope guide wheel group 8 has two balance wheels for winding the main balance rope 1 and the auxiliary balance rope 12 respectively, and the two balance wheels can rotate relatively independently, one end of the main balance rope 1 is fixedly connected to the lower end of the main counterweight 13, and the other end passes around the main balance rope 1 guide wheel 9 and one of the balance wheels and then is fixedly connected to the bottom of the auxiliary car 7, one end of the auxiliary balance rope 12 is fixedly connected to the lower end of the auxiliary counterweight, and the other end passes around the auxiliary balance rope 12 guide wheel 10 and one of the balance wheels and then is fixedly connected to the bottom of the auxiliary car 7.

[0062] Each group of auxiliary control wheels 5 is provided with auxiliary control wheels 5 and auxiliary lower guide wheel groups 6 in sequence from the middle to the outside. The auxiliary control wheel 5 has two states: releasing the brake and braking. One end of the auxiliary traction rope 3 is fixed in the shaft and is located above the highest point of the auxiliary counterweight travel path. The other end portion passes around the auxiliary counterweight return rope pulley downward, and then passes around the auxiliary traction machine 15 upward, and then passes around the auxiliary upper guide wheel 2 from above, and then passes around one of the auxiliary lower guide wheel groups 6 downward, and then passes around the auxiliary control wheel 5 upward, and then passes around the auxiliary car return rope pulley 20 downward, and then passes around another symmetrical auxiliary control wheel 5 upward, and then passes around another symmetrical auxiliary lower guide wheel group 6 downward, and then extends upward and is fixed in the shaft and is located above the highest point of the main car 4 travel path.

[0063] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-car elevator with combined and independent hybrid drive, Features: The double-car elevator comprises a main lifting system, wherein the main lifting system comprises a main car and a main traction machine, the double-car elevator further comprises an auxiliary lifting system which can move with the main lifting system, can also move independently relative to the main lifting system, and can drive the main car to move, and a balancing rope guide wheel group arranged below the auxiliary lifting system, the auxiliary lifting system comprises an auxiliary car arranged below the main car, an auxiliary control wheel group installed below the main car, an auxiliary traction rope connected to the auxiliary car and wound around the auxiliary control wheel group, and an auxiliary traction machine, the auxiliary The traction machine has three working states: driving, braking and free rotation. The auxiliary control wheel group has two states: releasing the brake and braking. When the auxiliary control wheel group is braked, the main car and the auxiliary car are driven to move synchronously by the main traction machine alone or driven to move synchronously by the auxiliary traction machine alone or driven to move synchronously by the main traction machine and the auxiliary traction machine alone. When the auxiliary control wheel group releases the brake, the main car and the auxiliary car are driven independently by the main traction machine and the auxiliary traction machine respectively; when the driving ratio of the double-car elevator is 1:1, The main lifting system also includes a main guide wheel, a main counterweight, a main balancing rope, and a main traction rope connected between the main car and the main counterweight and passing around the main traction machine and the main guide wheel; The auxiliary lifting system includes an auxiliary counterweight, an auxiliary upper guide wheel located in the hoistway and above the main car, an auxiliary balance rope guide wheel located in the hoistway and below the auxiliary traction machine, and an auxiliary balance rope, and two auxiliary control wheel sets are symmetrically arranged below the main car; The balance rope guide wheel group has two balance wheels for winding the main balance rope and the auxiliary balance rope respectively, and the two balance wheels can rotate relatively independently. One end of the main balance rope is fixedly connected to the lower end of the main counterweight, and the other end is fixedly connected to the bottom of the main car after passing through the main balance rope guide wheel and one of the balance wheels. One end of the auxiliary balance rope is fixedly connected to the lower end of the auxiliary counterweight, and the other end is fixedly connected to the bottom of the auxiliary car after passing through the auxiliary balance rope guide wheel and one of the balance wheels; each group of the auxiliary control wheel groups is sequentially provided with an auxiliary control wheel, an auxiliary lower control wheel, and an auxiliary lower lower control wheel from the middle to the outer side. The guide wheel group, the auxiliary control wheel has two states: releasing the brake and braking. There is an auxiliary traction rope symmetrically distributed on the left and right sides of the auxiliary car. The auxiliary traction ropes correspond to one of the auxiliary control wheel groups respectively, and extend upward from the top of the auxiliary car to bypass the corresponding auxiliary control wheels, and then extend downward and bypass the corresponding auxiliary lower guide wheel groups. Then one of them extends upward to the auxiliary upper guide wheel, and then bypasses the auxiliary traction machine and is fixedly connected to the auxiliary counterweight. The other extends upward and directly bypasses the auxiliary traction machine and is fixedly connected to the auxiliary counterweight.

2. The combined and independent hybrid drive double-car elevator according to claim 1, Features: The auxiliary upper guide wheel and the auxiliary traction machine are respectively located on both sides above the main car.

3. The combined and independent hybrid drive double-car elevator according to claim 1, Features: Each of the auxiliary lower guide wheel groups includes two auxiliary lower guide wheels, and the two outermost auxiliary lower guide wheels of the two auxiliary lower guide wheel groups are respectively located below the auxiliary upper guide wheel and the auxiliary traction machine.

4. A double-car elevator with combined and independent hybrid drive, Features: It includes a main lifting system, which includes a main car and a main traction machine. The double-car elevator also includes an auxiliary lifting system that can move with the main lifting system, can also move independently relative to the main lifting system, and can drive the main car to move, and a balance rope guide wheel group arranged below the auxiliary lifting system. The auxiliary lifting system includes an auxiliary car arranged below the main car, an auxiliary control wheel group installed below the main car, an auxiliary traction rope connected to the auxiliary car and wound around the auxiliary control wheel group, and an auxiliary traction machine. The auxiliary traction machine has three working states: driving, braking and free rotation. The auxiliary control wheel group has two states: releasing the brake and braking. When the auxiliary control wheel group is braked, the main car and the auxiliary car are driven by the main traction machine alone to move synchronously, or driven by the auxiliary traction machine alone to move synchronously, or driven by the main traction machine and the auxiliary traction machine alone to move synchronously. When the auxiliary control wheel group releases the brake, the main car and the auxiliary car are driven independently by the main traction machine and the auxiliary traction machine respectively. When the drive ratio of the elevator is 2:1, The main lifting system also includes a main car return rope pulley installed above the main car, a main guide wheel, a main counterweight, a main counterweight return rope pulley installed on the main counterweight, a main balancing rope and a main traction rope, one end of the main traction rope is fixed in the hoistway and is located above the highest point of the main counterweight travel path, and the other end of the main traction rope is passed around the main counterweight return rope pulley downward, then passed around the main guide wheel upward, then passed around the main traction machine from above, and then passed around the main car return rope pulley downward, and finally extended upward and fixed in the hoistway and is located above the highest point of the main car travel path; The auxiliary lifting system includes an auxiliary counterweight, an auxiliary upper guide wheel located in the hoistway and above the main car, an auxiliary balance rope guide wheel located in the hoistway and below the auxiliary traction machine, an auxiliary balance rope, and an auxiliary counterweight return rope wheel installed on the top of the auxiliary car. There are two auxiliary control wheel groups and two are symmetrically arranged below the main car. One end of the auxiliary traction rope is fixed in the hoistway and above the highest point of the auxiliary counterweight travel path, and the other end of the auxiliary traction rope is downwardly bypassed by the auxiliary counterweight return rope wheel, and then upwardly bypassed by the auxiliary traction machine, and then bypassed by the auxiliary upper guide wheel from above, and then downwardly bypassed by one of the auxiliary control wheel groups, and then downwardly bypassed by the auxiliary car return rope wheel, and then upwardly bypassed by the other symmetrical auxiliary control wheel group, and then extended upwardly and fixed in the hoistway and above the highest point of the main car travel path. The balance rope guide wheel group has two balance wheels for winding the main balance rope and the auxiliary balance rope respectively, and the two balance wheels can rotate relatively independently. One end of the main balance rope is fixedly connected to the lower end of the main counterweight, and the other end is fixedly connected to the bottom of the main car after passing through the main balance rope guide wheel and one of the balance wheels. One end of the auxiliary balance rope is fixedly connected to the lower end of the auxiliary counterweight, and the other end is fixedly connected to the bottom of the auxiliary car after passing through the auxiliary balance rope guide wheel and one of the balance wheels; each group of the auxiliary control wheel groups is sequentially provided with an auxiliary control wheel, an auxiliary lower guide wheel group, and an auxiliary control wheel from the middle to the outside. It has two states: released braking and braking. One end of the auxiliary traction rope is fixed in the hoistway and is located above the highest point of the auxiliary counterweight travel path. The other end of the auxiliary traction rope is downwardly bypassed around the auxiliary counterweight return rope pulley, and then upwardly bypassed around the auxiliary traction machine, and then bypassed around the auxiliary upper guide wheel from above, and then downwardly bypassed around one of the auxiliary lower guide wheel groups, and then upwardly bypassed around the auxiliary control wheel, and then downwardly bypassed around the auxiliary car return rope pulley, and then upwardly bypassed around another symmetrical auxiliary control wheel, and then downwardly bypassed around another symmetrical auxiliary lower guide wheel group, and then extended upwardly and fixed in the hoistway and is located above the highest point of the main car travel path.

5. A driving method for a double-car elevator based on the combined and independent hybrid drive according to any one of claims 1 to 4, It is characterized in that It includes the following steps: First, the auxiliary control wheel releases the brake and becomes a guide wheel. Then the main traction machine controls the movement or stationary of the main car, and the auxiliary traction machine controls the movement or stationary of the auxiliary car. The auxiliary car is independently controlled by the auxiliary traction machine. At this time, the main car and the auxiliary car operate in independent driving modes.

6. A driving method for a double-car elevator based on the combined and independent hybrid drive according to any one of claims 1 to 4, It is characterized in that It includes the following steps: First, the auxiliary control wheel applies the brake and the auxiliary traction machine releases the drive and brake. At this time, the length of the auxiliary traction rope between the auxiliary car and the auxiliary control wheel remains unchanged. Then the main traction machine drives and controls the movement of the main car. The vertical movement of the main car and the auxiliary car is controlled by the main traction machine. The main car drives the auxiliary car to move together and maintain a fixed distance.

7. A driving method for a double-car elevator based on the combined and independent hybrid drive according to any one of claims 1 to 4, It is characterized in that It includes the following steps: First, the auxiliary control wheel applies the brake and the main traction machine releases the drive and brake. At this time, the length of the auxiliary traction rope between the auxiliary car and the auxiliary control wheel remains unchanged. Then the auxiliary traction machine drives and controls the movement of the auxiliary car. The vertical movement of the main car and the auxiliary car is controlled by the auxiliary traction machine driving the auxiliary traction rope. The auxiliary traction rope is braked by the auxiliary control wheel and drives the main car to move together with the auxiliary car and maintain a fixed distance.

8. A driving method for a double-car elevator based on the combined and independent hybrid drive according to any one of claims 1 to 4, It is characterized in that It includes the following steps: First, the auxiliary control wheel applies the brake, and then the auxiliary traction machine drives and controls the movement of the auxiliary car, and the main traction machine drives and controls the movement of the main car. The length of the auxiliary traction rope between the auxiliary car and the auxiliary control wheel remains unchanged, and the two traction machines synchronously drive the main car and the auxiliary car to move together, maintain a fixed distance, and change their position in the vertical direction.

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