Ventilation structure for an elevator car

Abstract

The utility model relates to an elevator car ventilation structure in the field of elevator, including the air inlet and the air outlet of setting in the car body side end, the air inlet place installs the nonreturn valve and the air baffle, the air baffle at car body lower extreme is provided with the protection mechanism, the protection mechanism includes slide column, pre -fixed structure, let the connecting piece and the spacing disc, the side wall of elevator shaft wall is installed the rack along the vertical direction, the gear ring that is engaged with the rack is rotatably installed on the mounting bracket, and the spacing disc is provided with the spacing structure between gear ring, adopt above -mentioned structure, can automatically ventilate car body inside in the process of car body up and down, and when car body accidental out of control falls, the slide column is pushed to the side of gear ring by air pressure, and the slide column pushes the spacing disc into the inside of gear ring through let the connecting piece, and realizes the fixation of gear ring by utilizing spacing structure, thereby realizing the brake of car body by utilizing the meshing effect of gear ring and rack.

Description

Technical Field

[0001] This utility model relates to a ventilation structure, and more particularly to a ventilation structure for elevator cars used in the field of elevators. Background Technology

[0002] Elevator car ventilation is generally a direct-flow ventilation method, using a fan to mechanically supply air from the top and exhausting air through gaps in the car or by opening exhaust vents at the bottom.

[0003] A search revealed, for example, a specification of patent publication number CN210528191U discloses a ventilation structure for an elevator car, including ventilation components disposed at the lower ends of the elevator car top plate and the elevator car side plate. The ventilation component disposed at the elevator car top plate blows air into the elevator car, and the ventilation component disposed at the elevator car side plate blows air out of the elevator car, thereby causing air convection within the elevator car. The ventilation components include a fan, a cover plate, and a dust collection mechanism. The dust collection mechanism includes a mesh-structured groove, a ventilation window covering the groove, and air filter cotton disposed within the groove. Compared to the traditional method of only placing a fan on the elevator car top plate, the convection effect is better, and the dust collection mechanism can prevent dust from entering the elevator shaft and also reduce fan noise.

[0004] Based on the above search and combined with the existing technology, it was found that the ventilation structure of the elevator car disclosed above has a relatively simple function and is difficult to provide a safety protection effect for the operation of the elevator car. Therefore, a ventilation structure for elevator cars is proposed to improve the above problems. Utility Model Content

[0005] In view of the above-mentioned prior art, the technical problem to be solved by this utility model is that the ventilation structure of the elevator car disclosed above has a relatively simple function and is difficult to provide a safety protection effect for the operation of the elevator car.

[0006] To solve the above problems, this utility model provides a ventilation structure for an elevator car, including air inlets located at the upper and lower ends of the car body and air outlets located at the side ends of the car body. A one-way valve and an air guide hood are installed at the air inlets, and a protective mechanism is provided at the air guide hood located at the lower end of the car body.

[0007] The protective mechanism includes a sliding column, a pre-fixed structure, a clearance connector, and a limit plate;

[0008] The air guide hood is provided with a sliding hole at the side end near the car body. The sliding column is horizontally slidably installed inside the sliding hole. The pre-fixing structure is set between the sliding column and the sliding hole to limit the sliding column inside the sliding hole.

[0009] The end of the sliding column away from the air guide cover is connected to the limit plate through a clearance connector. A rack is installed vertically on the side wall of the elevator shaft. A mounting bracket is fixed on the outer wall of the car body. A gear ring that meshes with the rack is rotatably installed on the mounting bracket. The gear ring and the limit plate are set on the same axis. A limit structure is provided between the limit plate and the gear ring.

[0010] In the above-mentioned ventilation structure for elevator cars, the interior of the car body can be automatically ventilated during the up and down movement of the car body. When the car body accidentally falls out of control, the air pressure in the air guide hood on the lower side of the car body increases due to the accelerated descent of the car body. The air pressure pushes the sliding column toward the gear ring. The sliding column then pushes the limiting plate into the inside of the gear ring through the clearance connector, and the limiting structure is used to fix the gear ring. Thus, the meshing action of the gear ring and the rack is used to brake the car body.

[0011] As a further improvement of this application, the pre-fixed structure includes a limiting wedge and a compression spring. A groove is provided on the inner wall of the sliding hole, and the limiting wedge is connected to the inner side of the groove through the compression spring.

[0012] The end of the sliding column located inside the sliding hole is provided with a limiting groove, which is adapted to the limiting wedge.

[0013] As a further improvement of this application, the clearance connector includes a compression spring and a limiting slider. The limiting slider is coaxially fixed with the limiting plate. A limiting groove is provided at the end of the sliding column away from the air guide cover. The limiting slider is horizontally slidably installed on the inner side of the limiting groove. The compression spring is connected between the limiting slider and the inner wall of the limiting groove.

[0014] As a further improvement of this application, the limiting structure includes a limiting protrusion fixed to the circumferential side of the limiting disk and a limiting groove provided on the inner wall of the gear ring, wherein the limiting protrusion and the limiting groove are adapted to each other.

[0015] As a further improvement of this application, a buffer structure is provided between the sliding column and the car body.

[0016] As a further improvement to this application, the buffer structure includes a take-up reel, a wire rope, and a tension spring;

[0017] The take-up reel is rotatably mounted on the inside of the mounting bracket. The part of the slide column inside the slide hole is cylindrical, and the part of the slide column outside the slide hole is prismatic. The take-up reel is movably sleeved on the outside of the prismatic part of the slide column.

[0018] One end of the wire rope is fixedly connected to the take-up reel, and the other end of the wire rope is fixed to the car body by a tension spring. Guide wheels adapted to the wire rope are installed on the outer wall of the car body.

[0019] In summary, the system can automatically ventilate the interior of the car body during its ascent and descent. When the car body accidentally falls out of control, the air pressure in the air guide hood on the lower side of the car body increases due to the accelerated descent. This air pressure pushes the sliding column toward the gear ring, and the sliding column pushes the limiting plate into the inside of the gear ring through the clearance connector. The limiting structure fixes the gear ring, and the meshing action of the gear ring and rack, combined with the buffer structure, enables the car body to brake slowly, thus avoiding the violent impact on the personnel caused by the sudden stop of the car body. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this application;

[0021] Figure 2 This is a structural diagram of the protective structure in this application;

[0022] Figure 3 This is a partial cross-sectional structural diagram of the protective mechanism of this application;

[0023] Figure 4 for Figure 3 Enlarged structural diagram at point A;

[0024] Figure 5 This is a partial structural diagram of the protective mechanism of this application.

[0025] Explanation of the labels in the diagram:

[0026] 1. Car body, 2. Air guide cover, 201. Sliding hole, 202. Groove, 3. Exhaust vent, 4. Elevator shaft wall, 5. Rack, 6. Protective mechanism, 61. Sliding column, 6101. Limiting groove, 6102. Limiting slide groove, 62. Limiting slider, 63. Limiting plate, 64. Limiting protrusion, 65. Compression spring II, 66. Cable reel, 67. Wire rope, 68. Tension spring, 69. Guide wheel, 610. Limiting wedge, 611. Compression spring I, 7. Mounting bracket, 8. Gear ring, 801. Limiting slot. Detailed Implementation

[0027] The two embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0028] Implementation method 1:

[0029] Figures 1-5 The diagram shows a ventilation structure for an elevator car, including air inlets located at the upper and lower ends of the car body 1 and air outlets 3 located at the side ends of the car body 1. A one-way valve (not shown in the figure) and an air guide hood 2 are installed at the air inlets. The one-way valve can adopt a conventional one-way passage structure.

[0030] Specifically, when the car body 1 moves upward, the one-way valve located on the upper side of the car body 1 can be opened by the airflow, while the one-way valve located on the lower side of the car body 1 is in a sealed state, preventing the airflow in the car body 1 from flowing out of the vent on the lower side of the car body 1; similarly, when the car body 1 moves downward, the one-way valve located on the lower side of the car body 1 can be opened by the airflow, while the one-way valve located on the upper side of the car body 1 is in a sealed state, preventing the airflow in the car body 1 from flowing out of the vent on the upper side of the car body 1.

[0031] The necessity of the aforementioned one-way valve is that conventional filtration structures (not shown in the figure), such as activated carbon filters, are installed at the ventilation openings and exhaust outlets 3. The one-way valve ensures that the airflow inside and outside the car body 1 flows in one direction at the ventilation openings and exhaust outlets 3, thereby ensuring the stable filtration effect of the filtration structure on the airflow.

[0032] Among them, a protective mechanism 6 is provided at the air guide hood 2 located at the lower end of the car body 1. Specifically, the protective mechanism 6 includes a sliding column 61, a pre-fixed structure, a clearance connector and a limit plate 63.

[0033] More specifically, the air guide hood 2 is provided with a sliding hole 201 on the side end near the car body 1. The sliding column 61 is horizontally slidably installed on the inner side of the sliding hole 201. A pre-fixing structure is provided between the sliding column 61 and the sliding hole 201 to limit the sliding column 61 to the inner side of the sliding hole 201. The end of the sliding column 61 away from the air guide hood 2 is connected to the limiting plate 63 through a clearance connector. A rack 5 is installed vertically on the side wall of the elevator shaft wall 4. A mounting bracket 7 is fixed on the outer wall of the car body 1. A gear ring 8 that meshes with the rack 5 is rotatably installed on the mounting bracket 7. The gear ring 8 is coaxially arranged with the limiting plate 63. A limiting structure is provided between the limiting plate 63 and the gear ring 8.

[0034] The elevator car ventilation structure can automatically ventilate the interior of the car body 1 during the up and down movement of the car body 1. When the car body 1 accidentally falls out of control, the air pressure in the air guide hood 2 on the lower side of the car body 1 increases due to the accelerated descent of the car body 1. The air pressure pushes the sliding column 61 toward the side of the gear ring 8. The sliding column 61 then pushes the limiting plate 63 into the inside of the gear ring 8 through the clearance connector, and uses the limiting structure to fix the gear ring 8. Thus, the meshing action of the gear ring 8 and the rack 5 is used to brake the car body 1.

[0035] The pre-fixed structure includes a limiting wedge 610 and a compression spring 611. A groove 202 is provided on the inner wall of the sliding hole 201. The limiting wedge 610 is connected to the inner side of the groove 202 through the compression spring 611. A limiting groove 6101 is provided at the end of the sliding column 61 located inside the sliding hole 201. The limiting groove 6101 is adapted to the limiting wedge 610.

[0036] During normal operation of the car body 1, the limiting wedge 610 limits the sliding column 61 under the action of the compression spring 611; when the car body 1 accidentally falls out of control, the air pressure in the air guide hood 2 on the lower side of the car body 1 increases due to the accelerated descent of the car body 1. The air pressure pushes the sliding column 61 toward one side of the gear ring 8 until the limiting wedge 610 is pressed into the groove 202. After that, the sliding column 61 pushes the limiting plate 63 into the inner side of the gear ring 8 through the clearance connector.

[0037] Regarding the clearance connector, specifically, such as Figure 5 As shown, the clearance connector includes a compression spring 65 and a limiting slider 62. The limiting slider 62 is coaxially fixed with the limiting plate 63. The end of the sliding column 61 away from the air guide shroud 2 is provided with a limiting groove 6102. The limiting slider 62 is horizontally slidably installed on the inner side of the limiting groove 6102. The compression spring 65 is connected between the limiting slider 62 and the inner wall of the limiting groove 6102. The compression spring 65, in conjunction with the limiting slider 62, enables the limiting plate 63 to be smoothly pushed into the inner side of the gear ring 8.

[0038] Regarding the limiting structure, specifically, such as Figure 3 and Figure 5 As shown, the limiting structure includes a limiting protrusion 64 fixed to the circumferential side of the limiting disk 63 and a limiting groove 801 provided on the inner wall of the gear ring 8, with the limiting protrusion 64 and the limiting groove 801 being adapted to each other.

[0039] The sliding column 61 pushes the limiting plate 63 into the inner side of the gear ring 8 through the yielding connector, and uses the limiting protrusion 64 and the limiting slot 801 to limit the gear ring 8 to fix it, thereby using the meshing action of the gear ring 8 and the rack 5 to brake the car body 1.

[0040] Working principle: During the up and down movement of the car body 1, the ventilation openings and exhaust ports 3 can automatically ventilate the interior of the car body 1.

[0041] During normal operation of the car body 1, the limiting wedge 610 limits the sliding column 61 under the action of the compression spring 611;

[0042] When the car body 1 falls uncontrollably, the air pressure in the air guide hood 2 on the lower side of the car body 1 increases due to the accelerated descent of the car body 1. The air pressure pushes the sliding column 61 toward one side of the gear ring 8 until the limiting wedge 610 is pressed into the groove 202. After that, the sliding column 61 pushes the limiting plate 63 into the inner side of the gear ring 8 through the relief connector, and uses the limiting protrusion 64 and the limiting slot 801 to limit the relative positioning to fix the gear ring 8. Thus, the meshing action of the gear ring 8 and the rack 5 is used to brake the car body 1.

[0043] The second implementation method:

[0044] Figures 2-4 As shown, a buffer structure is connected between the sliding column 61 and the car body 1. Specifically, the buffer structure includes a take-up reel 66, a wire rope 67, and a tension spring 68.

[0045] More specifically, the take-up reel 66 is rotatably mounted on the inner side of the mounting bracket 7. The portion of the slide column 61 located inside the slide hole 201 is cylindrical, and the portion of the slide column 61 located outside the slide hole 201 is prismatic. The take-up reel 66 is movably sleeved on the outer side of the prismatic portion of the slide column 61. One end of the wire rope 67 is fixedly connected to the take-up reel 66, and the other end of the wire rope 67 is fixed to the car body 1 through a tension spring 68. A guide wheel 69 adapted to the wire rope 67 is installed on the outer wall of the car body 1.

[0046] After the sliding column 61 pushes the limiting disc 63 into the inner side of the gear ring 8 through the clearance connector, the limiting protrusion 64 and the limiting slot 801 are used to limit the relative positioning. After that, the gear ring 8 rotates with the limiting disc 63, and the limiting disc 63 rotates with the sliding column 61 through the limiting slider 62. The sliding column 61 rotates with the take-up reel 66. The rotating take-up reel 66 winds the wire rope 67, thereby gradually stretching the tension spring 68. During this process, the car body 1 is braked and buffered to avoid the violent impact on the personnel caused by the sudden stop of the car body 1. When the tension spring 68 can no longer be stretched, the final braking of the car body 1 is completed.

[0047] In light of current practical needs, the above-described embodiments adopted in this application are not limited to these. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this utility model.

Claims

1. A ventilation structure for an elevator car, comprising air inlets disposed at the upper and lower ends of the car body (1) and air outlets (3) disposed at the side ends of the car body (1), characterized in that: A one-way valve and a guide hood (2) are installed at the air inlet, and a protective mechanism (6) is provided at the guide hood (2) located at the lower end of the car body (1). The protective mechanism (6) includes a sliding column (61), a pre-fixed structure, a clearance connector and a limiting plate (63). The air guide hood (2) is provided with a sliding hole (201) on the side end near the car body (1). The sliding column (61) is horizontally slidably installed on the inner side of the sliding hole (201). The pre-fixing structure is provided between the sliding column (61) and the sliding hole (201) to limit the sliding column (61) to the inner side of the sliding hole (201). The end of the sliding column (61) away from the air guide cover (2) is connected to the limiting plate (63) through a clearance connector. A rack (5) is installed on the side wall of the elevator shaft (4) in the vertical direction. A mounting bracket (7) is fixed on the outer wall of the car body (1). A gear ring (8) that meshes with the rack (5) is rotatably installed on the mounting bracket (7). The gear ring (8) is coaxial with the limiting plate (63). A limiting structure is provided between the limiting plate (63) and the gear ring (8).

2. The ventilation structure for an elevator car according to claim 1, characterized in that: The pre-fixed structure includes a limiting wedge (610) and a compression spring (611). A groove (202) is provided on the inner wall of the sliding hole (201). The limiting wedge (610) is connected to the inner side of the groove (202) by the compression spring (611). The sliding column (61) is provided with a limiting groove (6101) at the end located inside the sliding hole (201), and the limiting groove (6101) is adapted to the limiting wedge (610).

3. The ventilation structure for an elevator car according to claim 1, characterized in that: The clearance connector includes a compression spring (65) and a limiting slider (62). The limiting slider (62) is coaxially fixed with the limiting plate (63). The end of the sliding column (61) away from the air guide cover (2) is provided with a limiting groove (6102). The limiting slider (62) is horizontally slidably installed on the inner side of the limiting groove (6102). The compression spring (65) is connected between the limiting slider (62) and the inner wall of the limiting groove (6102).

4. The ventilation structure for an elevator car according to claim 1, characterized in that: The limiting structure includes a limiting protrusion (64) fixed to the circumferential side of the limiting disk (63) and a limiting groove (801) provided on the inner wall of the gear ring (8), wherein the limiting protrusion (64) and the limiting groove (801) are adapted to each other.

5. A ventilation structure for an elevator car according to claim 1, characterized in that: A buffer structure connects the sliding column (61) to the car body (1).

6. The ventilation structure for an elevator car according to claim 5, characterized in that: The buffer structure includes a take-up reel (66), a wire rope (67), and a tension spring (68). The take-up reel (66) is rotatably mounted on the inner side of the mounting bracket (7). The part of the sliding column (61) located inside the sliding hole (201) is cylindrical, and the part of the sliding column (61) located outside the sliding hole (201) is prismatic. The take-up reel (66) is movably sleeved on the outer side of the prismatic part of the sliding column (61). One end of the wire rope (67) is fixed to the take-up reel (66), and the other end of the wire rope (67) is fixed to the car body (1) by a tension spring (68). A guide wheel (69) adapted to the wire rope (67) is installed on the outer wall of the car body (1).

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