Elevator car locking device

Abstract

The utility model relates to the technical field of elevator car locking, and discloses an elevator car locking device which comprises a device base, a locking frame is installed on the upper surface of the device base, a locking mechanism used for locking a car is arranged on one side of the locking frame, a driving mechanism used for driving the car is arranged on the side wall of the locking frame, and the driving mechanism is arranged on the side wall of the locking frame. A quick release mechanism for replacing the locking mechanism is arranged on one side of the driving mechanism; the locking mechanism comprises an electromagnet, the electromagnet is fixed to one side of the locking frame, and the two ends of the electromagnet are both connected with fixing blocks. The electromagnet on the locking frame stops electrifying, so that the fixed block loses external thrust, under the action of the pressure spring, the fixed block is pushed to move inwards, under the action of the rotating shaft, the friction block in the movable piece is in contact with the outer surface of the fixed wheel, the fixed wheel is fixedly locked, and then the lift car is locked.

Description

Technical Field

[0001] This utility model relates to the field of elevator car locking technology, specifically an elevator car locking device. Background Technology

[0002] With the rapid development of elevator technology, skyscrapers are becoming increasingly taller, and consequently, elevators are playing an increasingly indispensable role in our daily lives. An elevator is a permanent transportation device that serves several specific floors within a building, with its car running on at least two rigid guide rails perpendicular to the horizontal plane or at an angle of inclination less than 15° to the vertical. A vertical elevator has a car that runs between at least two rigid guide rails, either vertical or at an angle of inclination less than 15°. In the event of a dangerous rapid descent, a locking device is required to stop the elevator.

[0003] In existing technologies, such as the elevator car locking device disclosed in CN220811532U, a mounting plate is included. A first motor is mounted on one side of the top of the mounting plate via a mounting base, and a winding wheel is fixedly installed on the top of the mounting plate. By moving the assist plate to one side, the locking block, being double-trapezoidal, can move along the surface of the fixed block until it leaves the slot. After the fixing effect between the fixed block and the connecting block is canceled, the resistance plate can be easily removed, facilitating maintenance and replacement of the resistance plate. This ensures the stability of the resistance plate's resistance effect, thereby maintaining the overall stability of the equipment. Furthermore, the operation is simple, allowing workers to quickly and easily replace the resistance plate themselves, improving maintenance efficiency.

[0004] Existing locking devices allow the locking block to move along the surface of the fixed block by moving the assist plate to one side until the locking block leaves the slot. After the fixing effect between the fixed block and the connecting block is removed, the resistance plate can be easily removed, facilitating maintenance and replacement. However, most locking devices are inconvenient to adjust during use, and after long-term use, the locking mechanism wears down significantly, resulting in a loss of locking effectiveness. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] Given that most of the locking devices mentioned above or in the prior art are inconvenient to adjust during use, and that after prolonged use the locking mechanism wears out significantly, the locking effect cannot be guaranteed.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An elevator car locking device includes a device base, a locking frame mounted on the upper surface of the device base, a locking mechanism for locking the car on one side of the locking frame, a driving mechanism for driving the car on the side wall of the locking frame, and a quick-release mechanism for replacing the locking mechanism on one side of the driving mechanism.

[0009] The locking mechanism includes an electromagnet, which is fixed to one side of the locking frame. Both ends of the electromagnet are connected to a fixing block. A connecting rod passes through the inside of the fixing block. A first nut is threaded onto the outer surface of the connecting rod. A compression spring sleeved on the connecting rod is abutted against the side wall of the fixing block.

[0010] As a further improvement of this utility model: both ends of the electromagnet are threaded with a second nut, and a Hall sensor is fixed on the lower surface of the electromagnet.

[0011] As a further improvement of this utility model, a movable part is fixed to the lower surface of the fixed block.

[0012] As a further embodiment of this utility model: the driving mechanism includes a fixed wheel, which is mounted on the side wall of the locking frame, and a steel rope wheel is fixed to one side of the fixed wheel by bolts.

[0013] As a further improvement of this utility model: a speed reducer is connected to the other side of the fixed wheel, and a drive motor is fixed to the input end of the speed reducer.

[0014] As a further improvement of this utility model, the locking frame is equipped with fixing bolts that are threadedly connected to the device base.

[0015] As a further improvement of this utility model: the quick-release mechanism includes a mounting groove, which is formed inside the movable part, and a friction block is installed inside the mounting groove.

[0016] As a further embodiment of this utility model: a fixing screw that is threadedly connected to the friction block is installed on one side of the movable part, and a rotating shaft that is fixedly connected to the locking frame is rotatably connected to the lower end of the movable part.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This utility model uses a Hall sensor installed on an electromagnet to utilize the Hall effect and installs multiple magnets on a fixed wheel to monitor the elevator's running speed in real time.

[0019] 2. This utility model stops the electromagnet on the locking frame from being energized, causing the fixed block to lose its outward pushing force. Under the action of the compression spring, the fixed block will be pushed inward. Under the action of the rotating shaft, the friction block inside the moving part will contact the outer surface of the fixed wheel, fixing and locking the fixed wheel, thereby locking the car.

[0020] 3. This utility model uses a first nut on the connecting rod. By turning the first nut, the tension of the compression spring can be adjusted, thereby ensuring the locking effect on the fixed wheel.

[0021] 4. By unscrewing the fixing screws on the fixing block, the friction block can be released from its fixation, and with the cooperation of the mounting groove, the friction block can be disassembled. Attached Figure Description

[0022] Figure 1 A three-dimensional structural diagram of an elevator car locking device;

[0023] Figure 2 A three-dimensional structural diagram of an electromagnet in an elevator car locking device;

[0024] Figure 3 A three-dimensional structural diagram of a connecting rod in an elevator car locking device;

[0025] Figure 4 A three-dimensional structural diagram of a moving part in an elevator car locking device;

[0026] Figure 5 This is a side view schematic diagram of the moving part in an elevator car locking device.

[0027] In the diagram: 1. Device base; 2. Locking frame; 3. Electromagnet; 31. Fixing block; 32. Connecting rod; 33. First nut; 34. Compression spring; 35. Second nut; 36. Hall sensor; 37. Moving part; 4. Fixed wheel; 41. Steel rope wheel; 42. Reducer; 43. Drive motor; 5. Fixing bolt; 6. Mounting slot; 61. Friction block; 62. Fixing screw; 63. Rotating shaft. Detailed Implementation

[0028] To make the above-mentioned objectives, features and advantages of this utility model more readily understood, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0029] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0031] Example 1

[0032] Please see Figure 1 - Figure 5 This is the first embodiment of the present utility model. This embodiment provides an elevator car locking device, including a device base 1. A locking frame 2 is installed on the upper surface of the device base 1. A locking mechanism for locking the car is provided on one side of the locking frame 2. A driving mechanism for driving the car is provided on the side wall of the locking frame 2. A quick-release mechanism for replacing the locking mechanism is provided on one side of the driving mechanism.

[0033] The locking mechanism includes an electromagnet 3, which is fixed to one side of the locking frame 2. Both ends of the electromagnet 3 are connected to a fixing block 31. A connecting rod 32 passes through the inside of the fixing block 31. A first nut 33 is threaded onto the outer surface of the connecting rod 32. A compression spring 34 sleeved on the connecting rod 32 is abutted against the side wall of the fixing block 31.

[0034] Specifically, both ends of the electromagnet 3 are threaded with a second nut 35, and a Hall sensor 36 is fixed on the lower surface of the electromagnet 3.

[0035] Furthermore, the Hall sensor 36 installed on the electromagnet 3 can monitor the elevator's operating speed in real time.

[0036] Specifically, a movable part 37 is fixed to the lower surface of the fixed block 31, and a fixing bolt 5 that is threadedly connected to the device base 1 is installed inside the locking frame 2.

[0037] Furthermore, the fixing bolts 5 facilitate the fixing of the locking frame 2.

[0038] In operation, the Hall effect is utilized by a Hall sensor 36 mounted on the electromagnet 3. Multiple magnets are installed on the fixed wheel 4, with their north and south poles spaced a certain distance apart on the axis. The sensing surface of the Hall sensor 36 intersects with the north and south poles of the magnets. When the fixed wheel 4 rotates, the magnetic field strength at the location of the Hall sensor 36 changes periodically, causing the Hall sensor 36 to output a corresponding voltage signal. The frequency of this voltage signal is proportional to the rotational speed of the object. The voltage signal is transmitted to the elevator controller via wires, thereby controlling the elevator's speed in real time. According to the monitoring, when the car needs to be locked, the electromagnet 3 on the locking frame 2 stops being energized, so that the fixing block 31 loses its outward pushing force. Under the action of the compression spring 34, the fixing block 31 will be pushed inward. Under the action of the rotating shaft 63, the friction block 61 in the moving part 37 will contact the outer surface of the fixing wheel 4, and the fixing wheel 4 will be locked, thereby locking the car. By turning the first nut 33 on the connecting rod 32, the tension of the compression spring 34 can be adjusted, thereby ensuring the locking effect of the fixing wheel 4.

[0039] In summary, this elevator car locking device allows for convenient monitoring of the elevator's operating speed. When the elevator's ascending or descending speed is too high, it can lock the car, thereby reducing the risk of danger. Furthermore, the locking mechanism can be adjusted to reduce situations where the car cannot lock effectively due to excessive wear.

[0040] Example 2

[0041] Please see Figure 1 - Figure 5 This is the second embodiment of the present utility model.

[0042] Specifically, the drive mechanism includes a fixed wheel 4, which is mounted on the side wall of the locking frame 2. A steel rope wheel 41 is fixed to one side of the fixed wheel 4 by bolts, and a reducer 42 is connected to the other side of the fixed wheel 4. A drive motor 43 is fixed to the input end of the reducer 42.

[0043] Furthermore, the drive motor 43 is started, which drives the reducer 42 to operate, thereby raising and lowering the elevator.

[0044] Specifically, the quick-release mechanism includes a mounting slot 6, which is located inside the movable part 37, and a friction block 61 is installed inside the mounting slot 6.

[0045] Furthermore, by having the friction block 61 contact the outer surface of the fixed wheel 4, the fixed wheel 4 is fixed and locked, thereby locking the car.

[0046] Specifically, a fixing screw 62 that is threadedly connected to the friction block 61 is installed on one side of the movable part 37, and a rotating shaft 63 that is fixedly connected to the locking frame 2 is rotatably connected to the lower end of the movable part 37.

[0047] Furthermore, by unscrewing the fixing screws 62 on the fixing block 31, the fixing of the friction block 61 can be released, and the friction block 61 can be disassembled with the cooperation of the mounting groove 6.

[0048] In use, the device base 1 is placed in a suitable position, and the steel rope wheel 41 is connected to the steel rope of the elevator. The drive motor 43 is started, which drives the reducer 42 to run. The output shaft of the reducer 42 drives the fixed wheel 4 to rotate, driving the steel rope on the steel rope wheel 41 to run and raise and lower the elevator. The second nut 35 facilitates the disassembly of the electromagnet 3 and the fixed block 31. By unscrewing the fixing screw 62 on the fixed block 31, the fixing of the friction block 61 can be released. With the cooperation of the mounting groove 6, the friction block 61 can be disassembled. The fixing bolt 5 facilitates the fixing of the locking frame 2.

[0049] In summary, this elevator car locking device allows for convenient detection of the elevator's operating speed during use. It can lock the elevator when the elevator's lifting speed is too fast, thereby reducing the occurrence of danger. Furthermore, the locking mechanism can be adjusted to reduce situations where it cannot lock effectively due to excessive wear. By unscrewing the fixing screws 62 on the fixing block 31, the fixing of the friction block 61 can be released, and the friction block 61 can be disassembled with the cooperation of the mounting groove 6.

[0050] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0051] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0052] It should be understood that numerous specific implementation decisions can be made during the development of any actual implementation method, and in any engineering or design project. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An elevator car locking device, comprising a device base (1), characterized in that: A locking frame (2) is installed on the upper surface of the device base (1). A locking mechanism for locking the car is provided on one side of the locking frame (2). A driving mechanism for driving the car is provided on the side wall of the locking frame (2). A quick-release mechanism for replacing the locking mechanism is provided on one side of the driving mechanism. The locking mechanism includes an electromagnet (3), which is fixed to one side of the locking frame (2). Both ends of the electromagnet (3) are connected to a fixing block (31). A connecting rod (32) passes through the inside of the fixing block (31). A first nut (33) is threaded onto the outer surface of the connecting rod (32). A compression spring (34) sleeved on the connecting rod (32) is abutted against the side wall of the fixing block (31).

2. The elevator car locking device according to claim 1, characterized in that: The electromagnet (3) has a second nut (35) threaded to both ends, and a Hall sensor (36) is fixed to the lower surface of the electromagnet (3).

3. The elevator car locking device according to claim 2, characterized in that: The lower surface of the fixed block (31) is fixed with a movable part (37).

4. The elevator car locking device according to claim 1, characterized in that: The drive mechanism includes a fixed wheel (4), which is mounted on the side wall of the locking frame (2). A steel rope wheel (41) is fixed to one side of the fixed wheel (4) by bolts.

5. The elevator car locking device according to claim 4, characterized in that: A speed reducer (42) is connected to the other side of the fixed wheel (4), and a drive motor (43) is fixed to the input end of the speed reducer (42).

6. The elevator car locking device according to claim 5, characterized in that: The locking frame (2) is equipped with a fixing bolt (5) that is threadedly connected to the device base (1).

7. The elevator car locking device according to claim 3, characterized in that: The quick-release mechanism includes a mounting groove (6), which is located inside the movable part (37), and a friction block (61) is installed inside the mounting groove (6).

8. The elevator car locking device according to claim 7, characterized in that: One side of the movable part (37) is fitted with a fixing screw (62) that is threadedly connected to the friction block (61), and the lower end of the movable part (37) is rotatably connected to a rotating shaft (63) that is fixedly connected to the locking frame (2).

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