Three-door elevator system

Abstract

The invention discloses a three-door elevator system which comprises a lift car, a counterweight, a lift car frame, a hoisting rope, a driving main machine, lift car guide rails and counterweight guide rails. The lift car comprises two sets of first car door devices and a set of second car door device, the first car door devices are arranged on the left side and the right side of the lift car respectively, and the second car door device is arranged on the front side of the lift car; the lift car frame comprises a frame body, a lower supporting piece and an upper supporting piece. The counterweight is arranged on the rear side of the lift car in the hoistway; the lift car frame and the counterweight are connected through a traction rope hung on the driving main machine. The lift car is fixed to the lower supporting piece, and the frame body is located on the rear portion of the lift car. The lift car guide rails are arranged on the two sides of the frame body and used for guiding the lift car frame. The counterweight guide rails are arranged on the two sides of the counterweight and used for guiding the counterweight.

Description

Technical Field

[0001] The present invention relates to the technical field of elevators, and particularly relates to a three-opening elevator system. Background Art

[0002] The top view projection plane of existing elevators is mostly rectangular, and most of them adopt a cuboid design. For a few sightseeing elevators, end arc surface treatment will be carried out to adapt to the sightseeing requirements for installing glass and sightseeing.

[0003] In the prior art, the technical solution of a three-opening elevator uses a projection plane of a polygon (more than four sides), with hexagons being the most common. Small beveled surfaces are opened at the diagonals of the rectangle to arrange components such as guide shoes and safety tongs with the guide rails. This solution will reduce the utilization rate of the hoistway, reduce the car space in the hoistway in certain cases, and increase the non-standard rate of the elevator, resulting in increased costs. For example, the technical solutions disclosed in Chinese patent documents CN117800192A, CN11692728A, and CN210162992U;

[0004] Outside the polygon solution, in the conventional rectangular projection plane solution, the backpack-type car frame and guide rail design solution is mostly used, that is, the car guide rails are arranged inside the rear of the car, and components such as guide shoes and safety tongs are also arranged inside. This solution will cause comfort problems and car utilization problems brought by placing components such as guide shoes, car frames, and safety tongs inside the rear: in the case of offloading and facing car vibration, the rear guide rails cannot effectively balance and suppress vibration due to the torque disadvantage; the rear-mounted layout solution also abandons the space at the rear of the car and moves the components that should be placed outside the lower part to the space originally allocated to the car. At the same time, this solution relies on a steel structure frame to support the guide rails, resulting in a straight increase in cost, which is uneconomical for high-lift elevators. For example, the technical solutions disclosed in Chinese patent documents CN109850721A and CN209618625U.

[0005] In the rectangular projection plane solution, there is also a solution using a front-mounted guide rail car frame, but this solution greatly limits the opening width and opening position of the three front doors and completely hinders the design of a three-opening elevator for sightseeing purposes. For example, the technical solution disclosed in Chinese patent document CN216004866U. Summary of the Invention

[0006] To solve the above technical problems, the present invention provides a three-opening elevator system, including a car, a counterweight, a car frame, a hoisting rope, a driving host, a car guide rail, and a counterweight guide rail;

[0007] The car includes two sets of first car door devices and one set of second car door devices. The first car door devices are respectively arranged on the left and right sides of the car, and the second car door device is arranged on the front side of the car;

[0008] The car frame includes a frame body, a lower support member, and an upper support member; the counterweight is arranged at the rear side of the car in the hoistway; the car frame and the counterweight are connected by a hoisting rope suspended on the driving host.

[0009] The car is fixed on the lower support member, and the frame body is located at the rear of the car; car guide rails are arranged on both sides of the frame body to guide the car frame; counterweight guide rails are arranged on both sides of the counterweight to guide the counterweight.

[0010] Preferably, the upper support member has a suspension point for connecting the hoisting rope, and the suspension point is close to the center of gravity of the car and the car frame as a whole.

[0011] Preferably, the center of gravity of the car and the car frame as a whole is located between the geometric center of the frame body and the car.

[0012] Preferably, the first car door device is a side-opening double-fold car door device.

[0013] Preferably, the second car door device is a center-opening double-fold car door device.

[0014] Preferably, the opening direction of the first car door device is towards the rear side of the car.

[0015] Preferably, at least one side car wall of the car is made of a transparent material.

[0016] Compared with the prior art, the present invention moves fixed-volume objects such as the car door system and the car frame of the car, as well as the shielding space, to the rear side of the car. While retaining the sightseeing property of the front side, the center of gravity of the car is reasonably distributed to avoid the problem of car partial load caused by the basic design layout. Description of the Drawings

[0017] The following further describes the present invention in detail in conjunction with the drawings and the specific embodiments:

[0018] Figure 1 It is a three-dimensional schematic diagram of the three-opening elevator system structure of Embodiment 1;

[0019] Figure 2 It is a top view of the three-opening elevator system structure of Embodiment 1;

[0020] Figure 3 It is a schematic diagram of the car frame structure of the three-opening elevator system of Embodiment 1. Specific Embodiments

[0021] The following describes the implementation manners of the present invention through specific embodiments. Those skilled in the art can fully understand other advantages and technical effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through different specific implementation manners. The details in this specification can also be applied based on different viewpoints, and various modifications or changes can be made without departing from the overall design concept of the invention. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other. The following exemplary embodiments of the present invention can be implemented in many different forms and should not be construed as being limited only to the specific embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present invention complete and thorough, and to fully convey the technical solutions of these exemplary specific embodiments to those skilled in the art.

[0022] Embodiment 1

[0023] As Figure 1 and Figure 2 shown, this embodiment provides a three-opening elevator system, including a car 4, a counterweight 8, a car frame 5, a hoisting rope 7, a driving host (not shown in the figure), a car guide rail 6, and a counterweight guide rail 10;

[0024] The car 4 includes two sets of first car door devices 1 and one set of second car door devices 2. The first car door devices 1 are respectively arranged on the left and right sides of the car 4, and the second car door devices 2 are arranged on the front side of the car 4;

[0025] As Figure 3 shown, the car frame 5 includes a frame body 51, a lower support member 52, and an upper support member 53; the counterweight 8 is arranged behind the car 4 in the hoistway;

[0026] The car frame 5 and the counterweight 8 are connected by the hoisting rope 7 suspended on the driving host;

[0027] The car 4 is fixed on the lower support member 52 through a car bottom 9, and the frame body 51 is located at the rear of the car 4; the car guide rails 6 are arranged on both sides of the frame body 51 to guide the car frame 5; the counterweight guide rails 10 are arranged on both sides of the counterweight 8 to guide the counterweight 8;

[0028] The above three-opening elevator system is different from the existing three-opening solutions. In the case of using a 4-sided projection surface car, the rear-mounted car frame and the external guide rail solution can make better use of the hoistway space and the space at the rear of the car, and provide a greater control torque than the solution with the car frame rear-mounted and the guide rails internal, improving the comfort.

[0029] The rear car frame and guide rails can leave a sightseeing view for the front side and greatly improve the opening space on both the front sides. The external guide rails can be the same as those of conventional elevators, reducing the use of steel structure extension supports required for the guide rails and lowering the cost.

[0030] When applied to sightseeing elevators, the rear car frame and external guide rail solution can also place the necessary non-transparent mechanical structural components at the rear walls on both sides, without occupying the front sightseeing view.

[0031] The first car door device 1 is a side-opening double-fold car door device. The second car door device 2 is a center-opening double-fold car door device. The opening direction of the first car door device 1 is towards the rear side of the car. This setting greatly increases the opening width and improves the comfort of getting in and out. When the car door device opens, the offset of the overall center of gravity is only a change in the front-rear direction, reducing the pressure on the guide shoe assembly and the degree of car sway.

[0032] The upper support member 53 has a suspension point for connecting the hoisting rope 7, and the suspension point is close to the center of gravity of the car and the car frame as a whole. The center of gravity of the car and the car frame as a whole is located between the frame body and the geometric center of the car. While balancing the eccentric load, this provides a margin for the placement position of the upper driving host in the hoistway.

[0033] The present invention has been described in detail through specific embodiments and examples above, but these do not constitute a limitation to the present invention. Without departing from the principle of the present invention, those skilled in the art can also make many modifications and improvements, which should also be regarded as the protection scope of the present invention.

Claims

1. A three-door elevator system, characterized in that, It includes a car, a counterweight, a car frame, hoisting ropes, a driving machine, car guide rails and counterweight guide rails; The car includes two sets of first car door devices and one set of second car door devices. The first car door devices are respectively arranged on the left and right sides of the car, and the second car door device is arranged on the front side of the car; The car frame includes a frame body, a lower support member and an upper support member; the counterweight is arranged at the rear side of the car in the hoistway; The car frame and the counterweight are connected by hoisting ropes suspended on the driving machine; The car is fixed on the lower support member, and the frame body is located at the rear of the car; car guide rails are arranged on both sides of the frame body to guide the car frame; counterweight guide rails are arranged on both sides of the counterweight to guide the counterweight.

2. The three-door elevator system according to claim 1, wherein The upper support member has a suspension point for connecting the hoisting ropes, and the suspension point is close to the center of gravity of the car and the car frame as a whole.

3. The three-door elevator system according to claim 2, wherein The center of gravity of the car and the car frame as a whole is located between the frame body and the geometric center of the car.

4. The three-door elevator system according to claim 1, characterized in that, The first car door device is a side-opening double-fold car door device.

5. The three-door elevator system according to claim 1, characterized in that The second car door device is a center-opening double-fold car door device.

6. The three-door elevator system according to claim 4, wherein The opening direction of the first car door device is towards the rear side of the car.

7. The three-door elevator system according to claim 1, wherein At least one car wall of the car is made of transparent material.

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