Pneumatic elevator shaft door

Abstract

The utility model relates to the technical field of elevators, in particular to a pneumatic elevator shaft door. The utility model discloses a pneumatic elevator shaft door which comprises a door leaf, a push-pull structure, a power structure and a guide rail, the guide rail is installed outside an elevator shaft, the door leaf is connected with the push-pull structure, the push-pull structure is connected with the guide rail, and the power structure drives the door leaf to move towards one side along the guide rail. Through the design, the problem that a hoistway door of a pneumatic elevator needs to bear certain air pressure can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, in particular to a pneumatic elevator hoistway door. Background Art

[0002] As a new type of elevator technology, pneumatic elevator has become a hot technology in the elevator industry due to its features of no counterweight, no pit and easy installation. The applicant has developed a pneumatic elevator. Chinese patent publication number CN105819309A discloses the relevant structure, which includes a shaft part, a car part, and a control device, wherein the shaft part and the car part are cylindrical, and the bottom of the car part and the elevator shaft form a closed space, and the lifting function of the car is realized by filling and releasing air into the closed space through the inflation device. When the car rises, the air pressure of the closed space at the bottom of the car will be greater than the air pressure outside the shaft to form an air pressure difference due to the need to inflate to the bottom, so that the shaft door at the bottom of the car will be subjected to the gas pressure from the inside of the shaft.

[0003] Although this type of pneumatic lift operates stably and reliably, its overall structure is relatively complex, so its operation is relatively inconvenient and needs to be improved and optimized. Utility Model Content

[0004] In order to solve the technical defects proposed in the above background technology, the purpose of the utility model is to provide a pneumatic elevator shaft door, which has the advantages of simple structure, convenient operation, stability and reliability.

[0005] The utility model adopts the following technical solutions:

[0006] A pneumatic elevator hoistway door, comprising a door leaf, including:

[0007] The guide rail is installed on the outer wall of the elevator shaft in a ring structure, and the door leaf is slidably installed on the guide rail;

[0008] A push-pull structure, which is connected to the door leaf and drives the door leaf to move closer to or away from the elevator door, and the push-pull structure is fixed on the guide rail;

[0009] The power structure is used to drive the door leaf to slide along the guide rail.

[0010] By adopting the above scheme, when the elevator is running and the door needs to be closed, the motion structure drives the door leaf to move along the guide rail to the opening of the outer wall of the shaft, and then the push-pull structure drives the door leaf close to the elevator door. Then, the bottom of the elevator car is inflated to make the car rise. The enclosed space at the bottom and the outside of the shaft will produce an air pressure difference in which the internal air pressure is greater than the external air pressure. The elevator shaft door will be subjected to gas pressure from the inside to the outside. The push-pull structure pushes the door leaf, which can effectively resist the gas pressure inside the shaft and ensure that the shaft door leaf is not pushed open by the gas. When the door needs to be opened, the push-pull structure first drives the door leaf away from the elevator door, and then the power mechanism drives the door leaf to move along the guide rail to one side until the door leaf is opened at the opening of the outer wall of the shaft. Therefore, this structure has the advantages of simple structure, convenient operation, stability and reliability.

[0011] Preferably, the push-pull structure includes a cylinder base and a cylinder mounted on the cylinder base, the cylinder base is fixed on the guide rail, and the door leaf is fixed and linked to the cylinder.

[0012] By adopting the above solution, the cylinder will drive the door leaf to move away from and close to the well, with a simple structure and low manufacturing cost.

[0013] Preferably, the power structure includes a motor, a motor base, a driving gear, and a driven gear, wherein the driven gear is mounted on the outer wall of the elevator shaft, the motor is fixedly connected to the driving gear, the driving gear and the driven gear are meshed, and the push-pull structure is fixed on the motor base.

[0014] By adopting the above scheme, the rotation of the motor will drive the driving gear to rotate, and the gear will rotate along the driven gear fixed to the elevator shaft, thereby driving the motor base to move along the driven gear. The motor base drives the push-pull structure and drives the door leaf to move along the guide rail, thereby realizing the sliding of the door leaf to one side. The overall structure is simple and reliable.

[0015] Preferably, a rubber sealing strip is arranged around the outer edge of the door leaf.

[0016] By adopting the above solution, when the door leaf equipped with the rubber sealing strip is in contact with the outer wall of the shaft, the air tightness of the enclosed space at the bottom of the car can be better ensured.

[0017] Preferably, a magnetic door frame is fixed to the edges of the door leaf and is magnetically attracted to the opening of the outer wall of the well, and the magnetic door frame is fixedly connected to the guide rail.

[0018] By adopting the above scheme, the shape and size of the door leaf are the same as the opening of the outer wall of the shaft, and the magnetic door frame is arranged on the side of the door leaf facing the opening of the outer wall of the shaft. When the door leaf with the magnetic door frame is closed, after the door leaf is pushed into the opening of the outer wall of the shaft, the magnetic door frame will stick to the solid edge of the opening of the outer wall of the shaft and form magnetic attraction with it, which can make the door leaf fit more tightly to the outer wall of the shaft, thereby further enhancing the pressure resistance of the door leaf.

[0019] Preferably, the guide rails, push-pull structures and power structures are each provided in two groups, with one group being provided at the top and the bottom of the hoistway door respectively.

[0020] By adopting the above solution, the arrangement of two sets of push-pull structures and a power structure can make the door leaf more stably closed on the shaft, thereby enhancing its ability to resist gas pressure.

[0021] In summary, the beneficial effects of the utility model are:

[0022] The setting of the power structure and the push-pull structure can make the door leaf stably fixed on the elevator shaft when it is not working, so that the elevator shaft door has the ability to resist the air pressure inside the shaft; when the door leaf is needed to work, the power structure drives the door leaf to move along the guide rail to realize the function of sliding the door leaf to one side, and the door leaf equipped with a sealing strip is tightly combined with the elevator shaft door opening to ensure the air tightness inside the shaft.

[0023] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an overall schematic diagram of the pneumatic elevator hoistway door of the utility model;

[0025] Figure 2 yes Figure 1 A partial enlarged view of part A;

[0026] Figure 3 It is a top view of the pneumatic elevator hoistway door of the utility model;

[0027] Figure 4 This is a schematic diagram of the door leaf of the pneumatic elevator hoistway door of the utility model

[0028] Figure 5 It is a schematic diagram of the guide rail of the pneumatic elevator hoistway door of the utility model;

[0029] Figure 6 It is a cross-sectional view of the guide rail of the pneumatic elevator hoistway door of the utility model;

[0030] Explanation of the reference numerals in the figure: 1. Door leaf; 2. Cylinder base; 3. Cylinder; 4. Motor; 5. Motor base; 6. Driving gear; 7. Driven gear; 8. Slider; 9. Guide rail; 10 Magnetic door frame; 11. Sealing strip; 12. Slide rail; 13. Track. DETAILED DESCRIPTION

[0031] In order to make the content of the utility model more clearly understood, the utility model is further described below based on specific embodiments in combination with the accompanying drawings.

[0032] It should be noted that the terms "center", "upper", "lower", "front", "back", "left", "right", "inner", "outer" and the like used herein to indicate directions or positional relationships are based on directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. Unless otherwise specified, "plurality" means two or more.

[0033] Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" 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, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood by specific circumstances.

[0034] Embodiment 1:

[0035] like Figures 1 to 4 As shown, a pneumatic elevator shaft door comprises a door leaf 1, a guide rail 9, a push-pull structure, and a power structure, wherein the guide rail 9, the push-pull structure, and the power structure are each provided with two groups, and one group is provided at the top and the bottom of the shaft opening respectively, and the push-pull structure comprises a cylinder 3 and a cylinder base 2, wherein two cylinders 3 are installed on the cylinder base 2; a magnetic door frame 10 which is magnetically attracted to the opening of the outer wall of the shaft is fixed to the edges around the door leaf 1, and the magnetic door frame 10 is fixedly connected to the piston rod part of the cylinder 3, and a rubber sealing strip 11 is wound around the outer edge of the door leaf 2, and the rubber sealing strip 11 makes the door leaf 2 tightly combined with the outer wall of the shaft; a slider 8 is installed on the guide rail 9, and the cylinder base 2 is installed on the slider On block 8, the extension and retraction of the cylinder 3 can realize the door leaf 1 approaching or moving away from the shaft wall, and the cylinder base 2 and the entire door leaf 1 can slide along the guide rail; the power mechanism includes a motor 4 installed on the motor base 5, a driving gear 6, and a driven gear 7, wherein the driving gear 6 is installed on the rotating shaft of the motor 4, the driven gear 7 is fixed to the outer wall of the shaft and is located on the upper part of the guide rail 9, and the other group is located at the lower part. The upper part of the cylinder base 2 is fixed to the middle part of the motor base 5, and the driving gear 6 is meshed with the driven gear 7. When the motor 4 rotates, since the driven gear 7 is fixed, the driving gear 6 will roll along the driven gear 7, thereby driving the motor base 5 and the door leaf 1 connected to the push-pull structure to slide along the guide rail 9.

[0036] Embodiment 2:

[0037] like Figures 5 and 6 As shown, the difference from the first embodiment is that the guide rail 9 of the second embodiment includes a slide rail 12 and a track 13, wherein the track 13 is installed on the outer wall of the shaft, the cross section of the track 13 is a T-shaped structure, a groove is provided inside the slide rail 12, the slide rail 12 is installed in the track 13 and can rotate around the center of the shaft, and the power structure is fixed to the outer wall of the elevator shaft, the driven gear 7 is fixed on the slide rail 12, and the cylinder base 2 of the push-pull structure is installed on the side of the slide rail 12. When the motor rotates, the driving gear 6 drives the driven gear 7 to rotate the slide rail 12, and the rotation of the slide rail 12 drives the push-pull structure to rotate the push-pull structure, thereby fixing the power structure part and also allowing the door leaf to open and close and move to one side. This structure can reduce the weight of the elevator shaft door, thereby increasing the life of the shaft door.

[0038] Embodiment 3: The difference from Embodiment 1 is that the push-pull structure of Embodiment 3 is an electric push rod, which controls the door leaf to approach or move away from the elevator shaft door. The electric push rod has a self-locking function, which can self-lock and fix the door leaf after pushing the door leaf, thereby making the door leaf resist internal air pressure. This structure does not require a complete system, which can save space, and is relatively quiet in operation, which can reduce noise.

[0039] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A pneumatic elevator hoistway door, comprising a door leaf, characterized in that: include: The guide rail is installed on the outer wall of the elevator shaft in a ring structure, and the door leaf is slidably installed on the guide rail; A push-pull structure, which is connected to the door leaf and drives the door leaf to move closer to or away from the elevator door, and the push-pull structure is fixed on the guide rail; The power structure is used to drive the door leaf to slide along the guide rail.

2. A pneumatic elevator hoistway door according to claim 1, characterized in that: The push-pull structure comprises a cylinder base and a cylinder mounted on the cylinder base, the cylinder base is fixed on a guide rail, and the door leaf is fixed to the cylinder and linked.

3. The pneumatic elevator hoistway door according to claim 1, characterized in that: The power structure includes a motor, a motor base, a driving gear, and a driven gear. The driven gear is installed on the outer wall of the elevator shaft. The motor is fixedly connected to the driving gear, the driving gear and the driven gear are meshed, and the push-pull structure is fixed on the motor base.

4. The pneumatic elevator hoistway door according to claim 1, characterized in that: A rubber sealing strip is arranged around the outer edge of the door leaf.

5. The pneumatic elevator hoistway door according to claim 1, characterized in that: A magnetic door frame which is magnetically attracted to the opening of the outer wall of the well is fixed on the edges of the door leaf, and the magnetic door frame is fixedly connected to the guide rail.

6. The pneumatic elevator hoistway door according to claim 1, characterized in that: The guide rails, push-pull structures and power structures are each provided with two groups, and one group is provided at the top and the bottom of the well door respectively.

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