Elevator anti-falling device

Abstract

The utility model relates to the technical field of elevators, and discloses an elevator anti-falling device which comprises an elevator base, a mounting plate is arranged below the elevator base, the bottom of the mounting plate is provided with a groove and notches formed in the two sides of the groove, the mounting plate is provided with a through hole communicated with the groove and the notches, and the through hole is communicated with the groove and the notches. The groove is internally provided with a speed sensor, a double-shaft motor and a double-thread screw extending into the through hole, the output end of the double-shaft motor is provided with a worm, the double-thread screw is provided with a worm gear meshed with the worm, the through hole is internally provided with a sleeve which is in threaded connection with the double-thread screw and can move, one end of the sleeve extends into the notch and is provided with a U-shaped piece, and the other end of the sleeve is provided with a nut. And a rubber roller is arranged on the U-shaped piece. Compared with the prior art, the elevator car stop device has the advantages of being simple in structure, convenient to maintain and capable of enabling an elevator car to stop slowly.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, in particular to an elevator anti-falling device. Background Art

[0002] An elevator is a permanent transportation device that serves several specific floors in a building and is used to transport people or goods.

[0003] There are vertical types, where the car runs on at least two rows of rigid tracks perpendicular to the horizontal plane or inclined at an angle of less than 15 degrees to the vertical, as permanent transport equipment. There are also stepped types, where the treads are mounted on tracks and run continuously, commonly known as escalators or moving walkways. The size and structure of the car are designed to facilitate passenger entry and exit and loading and unloading of goods.

[0004] Among them, when a vertical elevator fails, the car is at risk of falling, and an anti-fall device needs to be installed. The current elevator anti-fall device consists of a safety clamp assembly, a safety clamp lifting linkage mechanism, a speed limiter device, and an elevator car guide rail. Its structure is relatively complex and not easy to maintain. In addition, the guide rail is made of steel, and the safety clamp will generate a large impact force when working, which may cause damage to the elevator and needs to be improved. Utility Model Content

[0005] (1) Technical problems solved

[0006] The technical problem to be solved by the utility model is to overcome the above difficulties and provide an elevator anti-falling device with a simple structure, easy maintenance and the ability to slowly stop the elevator car.

[0007] (2) Technical solution

[0008] In order to solve the above technical problems, the technical solution provided by the utility model is: an elevator anti-fall device, including an elevator base, a mounting plate is provided under the elevator base, the bottom of the mounting plate is provided with a groove and notches on both sides of the groove, a through hole connecting the groove and the notch is provided on the mounting plate, a speed sensor, a dual-axis motor and a double-headed screw extending into the through hole are provided in the groove, a worm is provided at the output end of the dual-axis motor, a worm wheel engaged with the worm is provided on the double-headed screw, a sleeve threadedly connected to the double-headed screw and movable is provided in the through hole, one end of the sleeve extends into the notch and is provided with a U-shaped piece, and a rubber roller is provided on the U-shaped piece.

[0009] As an improvement, a sliding groove is provided in the through hole along the length direction of the through hole, and a sliding block is provided on the sleeve and is arranged in the sliding groove.

[0010] As an improvement, a friction plate cooperating with the rubber roller is provided on the top of the U-shaped member.

[0011] As an improvement, a connecting piece is provided between the sleeve and the U-shaped piece.

[0012] As an improvement, the output end of the dual-axis motor is provided with a rotating shaft, and the worm is provided on the rotating shaft.

[0013] As an improvement, the number of the through holes is at least two groups.

[0014] (3) Beneficial effects

[0015] The advantages of this utility model compared with the prior art are:

[0016] 1. The speed sensor can monitor the elevator's descent speed in real time and feed the data back to the control center. When the control center detects that the elevator's descent speed is too fast, it activates the anti-fall device;

[0017] 2. The dual-axis motor drives the worm to rotate, the worm drives the double-headed screw to rotate, the double-headed screw drives the sleeve to move horizontally, and the sleeve pushes the rubber roller to make the rubber roller contact with the well. As the contact force between the rubber roller and the well increases, the rubber roller will deform, and the rubber roller will contact the friction plate, causing the elevator to slow down until it stops. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 .

[0019] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 .

[0020] Figure 3 It is a schematic structural diagram of the utility model in a top view.

[0021] Figure 4 This utility model Figure 3 Schematic diagram of the structure in cross-section at AA.

[0022] Figure 5 This utility model Figure 3 Schematic diagram of the structure in cross-section at BB.

[0023] As shown in the figure: 1. Elevator base; 2. Mounting plate; 3. Groove; 4. Notch; 5. Through hole; 6. Speed ​​sensor; 7. Dual-axis motor; 8. Double-headed screw; 9. Worm; 10. Worm gear; 11. Sleeve; 12. U-shaped part; 13. Rubber roller; 14. Slide; 15. Slider; 16. Friction plate; 17. Connector; 18. Rotating shaft. DETAILED DESCRIPTION

[0024] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0025] In the description of the present invention: It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like to indicate directions or positional relationships based on the 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 a limitation to the present invention.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, unless otherwise specified, "plurality" means two or more, unless expressly limited otherwise.

[0027] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0028] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0029] Example 1

[0030] Combined with attachment Figure 1-5 , an elevator anti-fall device includes an elevator base 1, a mounting plate 2 is provided below the elevator base 1, a groove 3 and notches 4 are provided at the bottom of the mounting plate 2, a through hole 5 connecting the groove 3 and the notch 4, a speed sensor 6, a dual-axis motor 7 and a double-headed screw 8 extending into the through hole 5 are provided in the groove 3, a worm 9 is provided at the output end of the dual-axis motor 7, a worm wheel 10 engaged with the worm 9 is provided on the double-headed screw 8, a sleeve 11 threadedly connected to the double-headed screw 8 and movable is provided in the through hole 5, one end of the sleeve 11 extends to the notch 4 and is provided with a U-shaped part 12, and a rubber roller 13 is provided on the U-shaped part 12.

[0031] A friction plate 16 is provided on the top of the U-shaped member 12 to cooperate with the rubber roller 13 .

[0032] A rotating shaft 18 is provided at the output end of the dual-axis motor 7 , and the worm 9 is provided on the rotating shaft 18 .

[0033] The speed sensor 6 monitors the descent speed of the elevator and feeds the monitoring data back to the control center. When the descent speed is too fast, the control center will control the dual-axis motor 7 to work, and the dual-axis motor 7 drives the rotating shaft 18 and the worm 9 to rotate. The worm 9 drives the worm wheel 10 and the double-headed screw 8 to rotate, and the double-headed screw 8 pushes the sleeve 11 to move, and then pushes the rubber roller 13 to the outside of the gap 4, so that the rubber roller 13 contacts the well wall. As the rubber roller 13 is pushed out, the contact area between the rubber roller 13 and the well wall increases, the rubber roller 13 is deformed, and the rubber roller 13 contacts the friction plate 16, so that the rubber roller 13 slows down, and then the elevator slows down, and finally the elevator stops falling.

[0034] Combined with attachment Figure 4 The through hole 5 is provided with a slide groove 14 arranged along the length direction of the through hole 5, and the sleeve 11 is provided with a slider 15 arranged in the slide groove 14. The slider 15 arranged on the sleeve 11 can limit the movement of the sleeve 11 so that the sleeve 11 moves along a straight line.

[0035] A connecting piece 17 is provided between the sleeve 11 and the U-shaped piece 12 .

[0036] The number of the through holes 5 is at least two groups.

[0037] The speed sensor 6 and the dual-axis motor 7 and their supporting power supply and controller mentioned in the present invention can be provided by the manufacturer. In addition, the circuits, electronic components and modules involved in the present invention are all existing technologies and can be fully implemented by those skilled in the art without further explanation.

[0038] All features described in the description, the appended claims and the drawings are important features of the present invention, whether alone or in any combination.

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "an implementation", "specific implementation", "other implementations", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment, implementation or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described above can also be combined in a suitable manner in any one or more embodiments, implementations or examples. The technical solutions recorded in this utility model also include technical solutions formed by any one or more specific features, structures, materials or characteristics described above, either alone or in combination.

[0040] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limiting the present invention. Ordinary technicians in this field can change, modify, replace, modify, delete some features, add features or re-combine features to form a technical solution in the above embodiments without departing from the principles and purpose of the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the innovative principles of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An elevator anti-fall device, comprising an elevator base (1), characterized in that: A mounting plate (2) is provided below the elevator base (1), a groove (3) and notches (4) provided at the bottom of the mounting plate (2), a through hole (5) communicating with the groove (3) and the notch (4) provided on the mounting plate (2), a speed sensor (6), a dual-axis motor (7) and a double-headed screw (8) extending into the through hole (5) provided in the groove (3), a worm (9) provided at the output end of the dual-axis motor (7), a worm wheel (10) meshing with the worm (9) provided on the double-headed screw (8), a sleeve (11) threadedly connected to the double-headed screw (8) and movable provided in the through hole (5), one end of the sleeve (11) extending into the notch (4) and provided with a U-shaped piece (12), and a rubber roller (13) provided on the U-shaped piece (12).

2. An elevator anti-fall device according to claim 1, characterized in that: A sliding groove (14) is provided in the through hole (5) and is arranged along the length direction of the through hole (5). A sliding block (15) is provided on the sleeve (11) and is arranged in the sliding groove (14).

3. The elevator anti-fall device according to claim 1, characterized in that: A friction plate (16) is provided on the top of the U-shaped member (12) and cooperates with the rubber roller (13).

4. The elevator anti-fall device according to claim 1, characterized in that: A connecting piece (17) is provided between the sleeve (11) and the U-shaped piece (12).

5. The elevator anti-fall device according to claim 1, characterized in that: The output end of the dual-axis motor (7) is provided with a rotating shaft (18), and the worm (9) is provided on the rotating shaft (18).

6. The elevator anti-fall device according to claim 1, characterized in that: The number of the through holes (5) is at least two groups.

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