Double-car mechanism and elevator system

Abstract

The invention provides a double-car mechanism and an elevator system, and relates to the technical field of elevators. The invention provides a double-car mechanism. The double-car mechanism comprises a main car frame, an upper car, a lower car, a lifting driving assembly and a hinge assembly. The upper lift car is located above the lower lift car, and the upper lift car and the lower lift car are installed on the inner side of the main car frame. The upper lift car is connected with the lower lift car through a hinge assembly; the lifting driving assembly is located on the side of the upper lift car, installed on the main car frame and in transmission connection with the upper lift car through the inclined cross beam. According to the double-lift-car mechanism, the upper lift car and the lower lift car can be linked through the hinge assembly, relative stability is kept, and the risks that due to unbalance loading, stress concentration exists in the lifting driving assembly, and the lifting driving assembly is prone to being damaged are reduced. Moreover, the lifting driving assembly is in transmission connection with the upper lift car through the inclined cross beam and can be arranged beside the upper lift car, so that the upper space of the upper lift car does not need to be completely occupied, and the requirement of the double-lift-car mechanism for the top-layer space of the shaft is lowered.

Description

Technical Field

[0001] The present invention relates to the technical field of elevators, and in particular, to a double-car mechanism and an elevator system. Background Art

[0002] As an efficient solution to meet the vertical transportation demand of buildings during peak hours, double-car elevators are increasingly widely used in super high-rise building projects, significantly improving the vertical movement efficiency of people. Especially in the case of uneven floor height distribution in buildings, in order to ensure that the upper and lower cars can stop at the same floor synchronously, the double-car system must have the ability to flexibly adjust the distance between the two cars.

[0003] In a double-car elevator system, a distance adjustment device is used to control the relative displacement of the upper and lower cars relative to the main frame to effectively adjust the distance between them. When a lead screw is used as the driving mechanism, although the position change of the car can be accurately controlled, this structure usually requires occupying the space at the top of the upper car; as the height difference between the upper and lower cars increases, this space occupation problem will become more prominent. In addition, when the load distribution inside the car is uneven, the lead screw driving method also faces the risk of component damage due to stress concentration.

[0004] On the other hand, when using a lead screw drive device to drive the car to lift and lower, the lead screw drive device usually needs to be installed on the top of the car, completely occupying the top space of the hoistway, further increasing the longitudinal dimension requirement of the double-car mechanism for the hoistway. In the design scheme of using a wire rope suspension method to adjust the distance between the two cars, although the problem of directly occupying the top area of the upper car is avoided, due to the elastic stretching characteristics of the wire rope itself, its length needs to be corrected regularly to ensure that the upper and lower cars can be accurately aligned. If not adjusted in time, it may cause the two cars to not reach the target floor level smoothly at the same time. Summary of the Invention

[0005] The purpose of the present invention is to provide a double-car mechanism and an elevator system to alleviate the technical problems in the prior art that the double-car mechanism is prone to uneven load and has a large demand for the top space of the hoistway.

[0006] In a first aspect, the double-car mechanism provided by the present invention includes: a main car frame, an upper car, a lower car, a lifting drive assembly, and a hinge assembly;

[0007] The upper car is located above the lower car, and the upper car and the lower car are respectively installed inside the main car frame;

[0008] The upper car is connected to the lower car through the hinge assembly;

[0009] The lifting drive assembly is located beside the upper car, and the lifting drive assembly is installed on the main car frame and is connected to the upper car through an inclined crossbeam transmission.

[0010] In combination with the first aspect, the present invention provides a first possible implementation of the first aspect, wherein the upper car and the lower car slide relative to the main car frame respectively through matching guide devices;

[0011] The hinge assembly is hingedly matched with a middle cross beam, and the middle cross beam is connected to the main car frame;

[0012] When the upper car is lifted or lowered relative to the middle cross beam, the upper car drives the hinge assembly, and the hinge assembly drives the lower car, so as to change the distance between the upper car and the lower car.

[0013] In combination with the first possible implementation manner of the first aspect, the present invention provides a second possible implementation manner of the first aspect, wherein the upper car and the lower car are respectively installed with auxiliary car frame guide shoes that cooperate with the guide device.

[0014] In combination with the first aspect, the present invention provides a third possible implementation of the first aspect, wherein the lifting drive assembly comprises: a first lead screw driver, a second lead screw driver and an inclined crossbeam;

[0015] The upper car is located between the first screw driver and the second screw driver, and the first screw driver and the second screw driver are respectively mounted on the main car frame;

[0016] The first screw driver and the second screw driver are respectively connected to an oblique crossbeam, and the oblique crossbeam is connected to the upper car.

[0017] In combination with the third possible implementation of the first aspect, the present invention provides a fourth possible implementation of the first aspect, wherein an upper crossbeam is connected above the upper car, and the oblique crossbeam is hinged to the middle portion of the upper crossbeam.

[0018] In combination with the fourth possible implementation manner of the first aspect, the present invention provides a fifth possible implementation manner of the first aspect, wherein the upper cross beam is slidably connected to the main car frame.

[0019] In combination with the first aspect, the present invention provides a sixth possible implementation manner of the first aspect, wherein the main car frame is equipped with elevator guide shoes.

[0020] In combination with the first aspect, the present invention provides a seventh possible implementation manner of the first aspect, wherein safety clamps are respectively installed on the top of the upper car and the bottom of the lower car.

[0021] In combination with the first aspect, the present invention provides an eighth possible implementation manner of the first aspect, wherein a work platform is installed on the top of the upper car.

[0022] In a second aspect, the present invention provides an elevator system equipped with the double-car mechanism described in the first aspect.

[0023] The embodiments of the present invention bring the following beneficial effects: the upper car is located above the lower car, and the upper car and the lower car are respectively installed on the inner side of the main car frame, the upper car and the lower car are connected by a hinge assembly, the lifting drive assembly is installed on the main car frame, and the lifting drive assembly is connected to the upper car by transmission, and the upper car and the lower car can be linked and kept relatively stable by the hinge assembly, thereby reducing the risk of stress concentration and easy damage of the lifting drive assembly due to eccentric loading. In addition, the lifting drive assembly is connected to the upper car through an inclined crossbeam transmission, and the lifting drive assembly can be arranged on the side of the upper car, and does not need to completely occupy the upper space of the upper car, thereby reducing the demand for the top space of the shaft for the double car mechanism.

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the related technologies, the drawings required for use in the specific embodiments or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A front view of a double-car mechanism provided by an embodiment of the present invention;

[0027] Figure 2 A schematic diagram of a double-car mechanism provided in an embodiment of the present invention;

[0028] Figure 3 for Figure 2 A magnified schematic diagram of position A in the middle.

[0029] Icons: 100 - main car frame; 200 - upper car; 210 - upper crossbeam; 220 - workbench; 300 - lower car; 201, 301 - auxiliary car frame guide shoe; 400 - lifting drive assembly; 410 - first screw drive; 420 - second screw drive; 430 - inclined crossbeam; 500 - hinge assembly; 600 - guide device; 700 - middle crossbeam; 800 - elevator guide shoe; 900 - safety clamp. DETAILED DESCRIPTION

[0030] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used to describe name differences and should not be understood as indicating or implying relative importance. For physical quantities in the formulas, if not separately marked, they should be understood as the basic quantities of the basic units of the International System of Units, or the derived quantities derived from the basic quantities through mathematical operations such as multiplication, division, differentiation, or integration.

[0032] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0033] As Figure 1 shown, the double-carriage mechanism provided by the embodiment of the present invention includes: a main car frame 100, an upper car 200, a lower car 300, a lifting drive assembly 400, and a hinge assembly 500; the upper car 200 is located above the lower car 300, and the upper car 200 and the lower car 300 are respectively installed inside the main car frame 100; the upper car 200 and the lower car 300 are connected by the hinge assembly 500; the lifting drive assembly 400 is located beside the upper car 200, and the lifting drive assembly 400 is installed on the main car frame 100 and is drivingly connected to the upper car 200 through an inclined cross beam 430.

[0034] In an optional embodiment, the hinge assembly 500 may be formed by connecting rod hinge, and the upper car 200 and the lower car 300 may be kept relatively stable through the hinge assembly 500. When there is an unbalanced load on the upper car 200 or the lower car 300, the upper car 200 and the lower car 300 remain relatively stable, which is conducive to alleviating the technical problem of stress concentration of the lifting drive assembly 400, and the relative position accuracy of the upper car 200 and the lower car 300 is higher, which can ensure that the two cars can reach the target floor smoothly at the same time.

[0035] The lifting drive assembly 400 is located beside the upper car 200 and is connected to the upper car 200 through an inclined crossbeam 430, so there is no need for the lifting drive assembly 400 to completely occupy the space above the upper car 200, thereby reducing the space requirement on the top floor of the elevator shaft.

[0036] like Figure 1 and Figure 2 As shown, in the embodiment of the present invention, the upper car 200 and the lower car 300 slide relative to the main car frame 100 respectively by cooperating with the guide device 600; the hinge assembly 500 is hingedly matched with the middle beam 700, and the middle beam 700 is connected to the main car frame 100; when the upper car 200 is raised or lowered relative to the middle beam 700, the upper car 200 drives the hinge assembly 500, and the hinge assembly 500 drives the lower car 300, so as to change the distance between the upper car 200 and the lower car 300.

[0037] Among them, the hinge assembly 500 adopts a connecting rod hinge to form a shear structure, with the middle cross beam 700 as support. When the lifting drive assembly 400 drives the upper car 200 to rise, the hinge assembly 500 extends, and the lower end of the hinge assembly 500 drives the lower car 300 to descend, thereby increasing the distance between the upper car 200 and the lower car 300; when the lifting drive assembly 400 drives the upper car 200 to descend, the hinge assembly 500 shortens, and the lower end of the hinge assembly 500 drives the lower car 300 to rise, thereby reducing the distance between the upper car 200 and the lower car 300.

[0038] like Figure 1 and Figure 3 As shown, the upper car 200 and the lower car 300 are respectively equipped with auxiliary car frame guide shoes 201, 301 that cooperate with the guide device 600. The upper car 200 and the lower car 300 can slide along the guide device 600, thereby improving the stability of the upper car 200 and the lower car 300, and avoiding the upper car 200 and the lower car 300 from causing eccentric wear or stress concentration of the transmission structure due to eccentric loading.

[0039] Further, the lifting drive assembly 400 includes: a first lead screw drive 410, a second lead screw drive 420, and an inclined crossbeam 430; the upper car 200 is located between the first lead screw drive 410 and the second lead screw drive 420, and the first lead screw drive 410 and the second lead screw drive 420 are respectively installed on the main car frame 100; the first lead screw drive 410 and the second lead screw drive 420 are respectively drivingly connected to the inclined crossbeam 430, and the inclined crossbeam 430 is connected to the upper car 200.

[0040] In this embodiment, two inclined crossbeams 430 are provided. The two inclined crossbeams 430 are respectively hingedly connected to the first lead screw drive 410 and the second lead screw drive 420 in a one-to-one correspondence, and the inclined crossbeam 430 has an angle relative to the plumb direction. By respectively driving the two inclined crossbeams 430 to drive the upper car 200 to move up and down, it is not necessary to arrange the first lead screw drive 410 and the second lead screw drive 420 to be misaligned in the plumb direction relative to the upper car 200, thereby reducing the longitudinal layout space of the double-car mechanism.

[0041] In addition, the first lead screw drive 410 and the second lead screw drive 420 respectively drive the upper car 200 through the inclined crossbeam 430, and the acting forces transmitted from the upper car 200 to the first lead screw drive 410 and the second lead screw drive 420 tend to be consistent, which can avoid damage to unilateral devices caused by uneven stress on the first lead screw drive 410 and the second lead screw drive 420.

[0042] Further, an upper crossbeam 210 is connected above the upper car 200, and the inclined crossbeam 430 is hinged to the middle of the upper crossbeam 210.

[0043] When the upper crossbeam 210 is located above the upper car 200, compared with driving the upper car 200 to move up and down by using a crossbeam located below the upper car 200, the number of transmission devices between the upper car 200 and the lower car 300 can be reduced, thereby reducing the space occupied by the devices between the upper car 200 and the lower car 300, which is beneficial for the upper car 200 and the lower car 300 to be adjusted to form a smaller spacing state. In addition, the middle of the upper crossbeam 210 is hinged to the inclined crossbeam 430, realizing the inclined layout state of the inclined crossbeam 430 relative to the plumb direction, reducing the height space occupied by the drive structure above the upper car 200. In this way, the top floor space can be saved, and it is more convenient for the layout and installation of the double-car mechanism.

[0044] As Figure 2 and Figure 3 shown, the upper crossbeam 210 is slidably connected to the main car frame 100. Among them, the upper crossbeam 210 can be installed with pulleys and cooperate with the guiding device 600 through the pulleys, so that the upper crossbeam 210 can smoothly move up and down relative to the main car frame 100.

[0045] In an alternative embodiment, the upper crossbeam 210 can also be configured as a spring steel beam. When the first lead screw drive 410 and the second lead screw drive 420 drive the upper crossbeam 210, the upper crossbeam 210 can elastically bend, thereby achieving transmission shock absorption.

[0046] As Figure 1 and Figure 3 shown, the main car frame 100 is equipped with elevator guide shoes 800, which can be configured as wheel members adapted to the slide rails in the elevator shaft to ensure that the main car frame 100 can smoothly and smoothly lift and lower along the elevator shaft.

[0047] As Figure 1 shown, safety tongs 900 are respectively installed at the top of the upper car 200 and the bottom of the lower car 300. The safety tongs 900 can be used to brake in case of elevator failure, thereby ensuring elevator safety.

[0048] In an alternative embodiment, a workbench 220 can also be installed at the top of the upper car 200, and an elevator control cabinet can be arranged on the workbench 220. In addition, a dust cover can be installed outside the first lead screw drive 410 and the second lead screw drive 420 to prevent the first lead screw drive 410 and the second lead screw drive 420 from being contaminated with dust.

[0049] The elevator system provided by the embodiment of the present invention is equipped with the double-car mechanism described in the above embodiment, and this elevator system has the technical effects of the above double-car mechanism, which will not be elaborated here.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A double-car mechanism, characterized in that: include: A main car frame (100), an upper car (200), a lower car (300), a lifting drive assembly (400) and a hinge assembly (500); The upper car (200) is located above the lower car (300), and the upper car (200) and the lower car (300) are respectively installed on the inner side of the main car frame (100); The upper car (200) and the lower car (300) are connected via the hinge assembly (500); The lifting drive assembly (400) is located beside the upper car (200), and the lifting drive assembly (400) is installed on the main car frame (100) and is connected to the upper car (200) through an inclined crossbeam (430).

2. The double-car mechanism according to claim 1, characterized in that: The upper car (200) and the lower car (300) slide relative to the main car frame (100) respectively through matching guide devices (600); The hinge assembly (500) is hingedly matched with a middle cross beam (700), and the middle cross beam (700) is connected to the main car frame (100); When the upper car (200) is raised or lowered relative to the middle cross beam (700), the upper car (200) drives the hinge assembly (500), and the hinge assembly (500) drives the lower car (300), so as to change the distance between the upper car (200) and the lower car (300).

3. The double-car mechanism according to claim 2, characterized in that: The upper car (200) and the lower car (300) are respectively equipped with auxiliary car frame guide shoes (201, 301) that match the guide device (600).

4. The double-car mechanism according to claim 1, characterized in that: The lifting drive assembly (400) comprises: a first lead screw driver (410) and a second lead screw driver (420); The upper car (200) is located between the first screw driver (410) and the second screw driver (420), and the first screw driver (410) and the second screw driver (420) are respectively installed on the main car frame (100); The first screw driver (410) and the second screw driver (420) are respectively connected to the inclined crossbeam (430) in a transmission manner, and the inclined crossbeam (430) is connected to the upper car (200).

5. The double-car mechanism according to claim 4, characterized in that: An upper crossbeam (210) is connected above the upper car (200), and the oblique crossbeam (430) is hinged to the middle of the upper crossbeam (210).

6. The double-car mechanism according to claim 5, characterized in that: The upper cross beam (210) is slidably connected to the main car frame (100).

7. The double-car mechanism according to claim 1, characterized in that: The main car frame (100) is equipped with an elevator guide shoe (800).

8. The double-car mechanism according to claim 1, characterized in that: Safety clamps (900) are respectively installed on the top of the upper car (200) and the bottom of the lower car (300).

9. The double-car mechanism according to claim 1, characterized in that: A workbench (220) is installed on the top of the upper car (200).

10. An elevator system, characterized in that: The elevator system is equipped with the double-car mechanism according to any one of claims 1-9.

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