Wind pressure resistant elevator landing door device

Abstract

The invention discloses a wind pressure resistant elevator landing door device which comprises a first landing door, a second landing door, a first closing part and a second closing part. The first closing part is fixed on the closing side of the first landing door, and the second closing part is fixed on the closing side of the second landing door; when the gap between the first landing door and the second landing door is smaller than a preset threshold value, the first closing part makes contact with the second closing part, and air is prevented from flowing through the gap between the first landing door and the second landing door. Before the car door and the landing door are unhooked, air flow outside the hoistway and the hall is isolated through the closing mechanism, the wind pressure problem caused by the chimney effect is solved, and the landing door can be smoothly closed.

Description

Technical Field

[0001] This invention relates to the field of elevator technology, and more specifically to a wind-pressure resistant elevator landing door device. Background Technology

[0002] In the final stage of elevator door closing, the car door disengages from the landing door, and the landing door closes using the weight of a counterweight. Due to the chimney effect, air flows upwards along the shaft, increasing air convection at the landing door, causing noise and preventing the landing door from closing completely. For example, the technical solution disclosed in Chinese Patent Document 1 (CN216737113U) only focuses on fire and smoke prevention, failing to effectively solve the problem of the landing door failing to close when the wind pressure is too high; the technical solution disclosed in Chinese Patent Document 2 (CN212712296U) adds a drive component to actively drive the landing door device, but this technical solution is very expensive.

[0003] Therefore, how to solve the problem of the landing door failing to close due to excessive wind pressure at a low cost is the current technical challenge. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a wind pressure resistant elevator landing door device, comprising a first landing door, a second landing door, a first closing part, and a second closing part;

[0005] The first closing part is fixed to the closing side of the first door, and the second closing part is fixed to the closing side of the second door. When the gap between the first door and the second door is less than a preset threshold, the first closing part and the second closing part come into contact, preventing air from flowing through the gap between the first door and the second door.

[0006] Preferably, the elevator landing door device further includes a third closing part and a fourth closing part; the third closing part is fixed to the far side of the first landing door, and the fourth closing part is fixed to the far side of the second landing door; when the first landing door and the second landing door are closed, the third closing part and the fourth closing part contact the door frame, preventing air from flowing through the gap between the first landing door, the second landing door and the door frame.

[0007] Preferably, the first closing part is a bent structure with a cavity at the mating point with the second closing part, and a sealing device is fixed inside the cavity; the second closing part is a bent structure with a protrusion at the mating point with the first closing part, and when the protrusion extends into the cavity, the first closing part and the second closing part come into contact.

[0008] Preferably, the sealing device is made of multi-layer composite material.

[0009] Preferably, the multilayer composite material is composed of a brush, sound-absorbing cotton, and an elastic rubber layer.

[0010] Preferably, the contact surfaces of the first and second closed portions are arc-shaped.

[0011] Preferably, the inner side of the cavity has a reinforcing rib structure.

[0012] Preferably, the first closing portion covers the entire first door layer in the height direction, and the second closing portion covers the entire second door layer in the height direction.

[0013] Preferably, the third closing portion covers the entire first door in the height direction, and the fourth closing portion covers the entire second door in the height direction.

[0014] Preferably, the third and fourth closing parts are provided with sealing material at the contact points with the door frame.

[0015] Compared with the prior art, the present invention solves the wind pressure problem caused by the chimney effect by isolating the air flow between the hoistway and the outside of the hall through a closing mechanism before the car door and the landing door are unhooked, so that the landing door can be closed smoothly. Attached Figure Description

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0017] Figure 1 This is a schematic diagram of the structure and state of the wind pressure resistant elevator landing door device in Example 1 before the door closes to the final stage;

[0018] Figure 2 This is a schematic diagram of the structure and state of the wind pressure resistant elevator landing door device in Example 1 during the final stage of closing;

[0019] Figure 3 This is a schematic diagram showing the structure and state of the wind-pressure resistant elevator landing door device in Example 1 after the door is closed;

[0020] Figure 4 This is a partially enlarged schematic diagram of the first and second closing parts of the wind-pressure resistant elevator landing door device in Example 1 when they come into contact. Detailed Implementation

[0021] The following specific embodiments illustrate the implementation of the present invention. 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 embodiments, and the details in this specification can also be applied based on different viewpoints, with various modifications or changes made without departing from the overall design concept of the invention. It should be noted that, unless otherwise specified, the following embodiments and features 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 to the specific embodiments set forth herein. It should be understood that these embodiments are provided to make the disclosure of the present invention thorough and complete, and to fully convey the technical solutions of these exemplary embodiments to those skilled in the art.

[0022] Example 1

[0023] like Figures 1 to 4 As shown, this embodiment provides a wind pressure resistant elevator landing door device, including a first landing door 1, a second landing door 2, a first closing part 4, a second closing part 3, a third closing part 7, and a fourth closing part 10.

[0024] First-floor door 1 and second-floor door 2 are installed at the station entrances / exits to enable the opening and closing of these entrances / exits. The station entrances / exits are typically equipped with door frames 6 and 9, with a certain gap between the door frames 6 and 9 and the first-floor door 1 and second-floor door 2. The outer side of the first-floor door 1 and second-floor door 2 leads to the elevator lobby, while the inner side leads to the elevator shaft.

[0025] The first closing part 4 is fixed to the closing side of the first door 1, and the second closing part 3 is fixed to the closing side of the second door 2. When the gap between the first door 1 and the second door 2 is less than a preset threshold, the first closing part 4 and the second closing part 3 come into contact, preventing air from flowing through the gap between the first door 1 and the second door 2.

[0026] The third closing part 7 is fixed to the far side of the first door 1, and the fourth closing part 10 is fixed to the far side of the second door 2. When the first door 1 and the second door 2 are closed, the third closing part 7 and the fourth closing part 10 contact the door frame 6 and 9, preventing air from flowing through the gap between the first door 1, the second door 2 and the door frame 6 and 9.

[0027] The closed side refers to the side that comes into contact with the first door 1 and the second door 2 after they are closed, and the far side refers to the other side of the first door 1 and the second door 2 relative to the closed side.

[0028] The first closing part 4 is a bent structure and has a cavity at the mating point with the second closing part 3. A sealing device 5 is fixed inside the cavity. The second closing part 3 is a bent structure and has a protrusion at the mating point with the first closing part 4. When the protrusion extends into the cavity, the first closing part 4 and the second closing part 3 come into contact.

[0029] The sealing device 5 is made of a multi-layer composite material. The multi-layer composite material consists of a brush, sound-absorbing cotton, and an elastic rubber layer, which enhances the sealing performance and wind pressure resistance.

[0030] Sealing materials 8 and 11 are provided at the contact points between the third closing part 7 and the fourth closing part 10 and the door frame 6 and 9.

[0031] The working process of the elevator landing door device in this embodiment is as follows:

[0032] like Figure 1 As shown, when the doors close, the motor drives the car doors to close, and the first floor door 1 and the second floor door 2 enter the closing process under the action of the car doors. In the final stage of closing, as... Figure 2 As shown, before the car door disengages from the landing door, after the gap between the first landing door 1 and the second landing door 2 is less than a preset threshold, the first closing part 4 and the second closing part 3 come into contact. The protrusion of the second closing part 3 extends into the cavity of the first closing part 4. With the cooperation of the sealing device 5, air cannot flow through the gap between the first landing door 1 and the second landing door 2. Figure 3 As shown, after the car door and landing door are disengaged, the first closing part 4 and the second closing part 3 have already isolated air convection. The first landing door 1 and the second landing door 2 rely on the gravity of the counterweight to complete the final closing action. At this time, the third closing part 7 and the fourth closing part 10 are in contact with and fit against the door frame 6 and 9. Through the sealing materials 8 and 11, air flow and noise are further isolated.

[0033] Preferably, the contact surfaces of the first closing portion 4 and the second closing portion 3 are arc-shaped, or elastic gaskets are added to reduce the impact force during contact. The inner side of the cavity has a reinforcing rib structure to improve structural strength.

[0034] Preferably, the first closing part 4 covers the entire first door 1 in the height direction, and the second closing part 3 covers the entire second door 2 in the height direction. The third closing part 7 covers the entire first door 1 in the height direction, and the fourth closing part 10 covers the entire second door 2 in the height direction.

[0035] This embodiment has the following technical effects:

[0036] 1. In the final stage of closing the landing door, the airflow between the shaft and the outside of the hall is isolated by the first and second closing parts, thus solving the wind pressure problem caused by the chimney effect;

[0037] 2. After the landing door is closed, the third and fourth closing parts further improve the chimney effect and landing-side noise;

[0038] 3. Each closed part has the effect of preventing dust and smoke.

[0039] The present invention has been described in detail above through specific embodiments and examples, but these are not intended to limit the invention. Many modifications and improvements can be made by those skilled in the art without departing from the principles of the invention, and these should also be considered within the scope of protection of the present invention.

Claims

1. A wind-pressure resistant elevator landing door device, characterized in that, It includes a first-layer door, a second-layer door, a first closing part, and a second closing part; The first closing part is fixed to the closing side of the first door, and the second closing part is fixed to the closing side of the second door. When the gap between the first door and the second door is less than a preset threshold, the first closing part and the second closing part come into contact, preventing air from flowing through the gap between the first door and the second door.

2. The wind-pressure resistant elevator landing door device according to claim 1, characterized in that, The elevator landing door device also includes a third closing part and a fourth closing part; The third closing part is fixed to the far side of the first door, and the fourth closing part is fixed to the far side of the second door. When the first door and the second door are closed, the third closing part and the fourth closing part contact the door frame, preventing air from flowing through the gap between the first door, the second door and the door frame.

3. The wind-pressure resistant elevator landing door device according to claim 1, characterized in that, The first closing part is a bent structure with a cavity at the mating point with the second closing part, and a sealing device is fixed inside the cavity; the second closing part is a bent structure with a protrusion at the mating point with the first closing part, and when the protrusion extends into the cavity, the first closing part and the second closing part come into contact.

4. The wind-pressure resistant elevator landing door device according to claim 3, characterized in that, The sealing device is made of multi-layer composite material.

5. The wind-pressure resistant elevator landing door device according to claim 4, characterized in that, The multilayer composite material consists of a brush, sound-absorbing cotton, and an elastic rubber layer.

6. The wind-pressure resistant elevator landing door device according to claim 1, characterized in that, The contact surfaces of the first and second closed portions are arc-shaped.

7. The wind-pressure resistant elevator landing door device according to claim 3, characterized in that, The cavity has a reinforcing rib structure on its inner side.

8. The wind-pressure resistant elevator landing door device according to claim 1, characterized in that, The first closing part covers the entire first-layer door in the height direction, and the second closing part covers the entire second-layer door in the height direction.

9. The wind-pressure resistant elevator landing door device according to claim 1, characterized in that, The third closing part covers the entire first door in the height direction, and the fourth closing part covers the entire second door in the height direction.

10. The wind-pressure resistant elevator landing door device according to claim 1, characterized in that, The third and fourth closing parts are provided with sealing material at the contact points with the door frame.

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