Elevator car anti-falling safety locking device

Abstract

The utility model relates to the field of elevator car discloses a kind of elevator car anti-falling safety locking device, including control box, the side wall of control box is fixedly connected with sleeve rod, the inner wall of sleeve rod is slidably connected with moving rod, the top of moving rod is fixedly connected with sliding block, the middle part of sliding block is threadedly connected with threaded rod, the left end side wall of moving rod is elastically connected with connecting frame by reset spring, the inner wall of connecting frame is rotatably connected with gyro wheel, the rotating shaft outer wall of gyro wheel is provided with rotational speed sensor, the top inner wall of control box is provided with hydraulic rod, the movable end of hydraulic rod is fixedly connected with fixed plate, the bottom of fixed plate is hinged with sliding rod by hinged rod.The utility model in, by rotating threaded rod, extension rod etc. Operation, the contact state of gyro wheel and elevator shaft wall and the position of abutment are conveniently adjusted, ensure that device can accurately adapt different elevator car and normally work.

Description

Technical Field

[0001] This utility model relates to the field of elevator cars, and in particular to an elevator car anti-fall safety locking device. Background Technology

[0002] In modern high-rise buildings, elevators are crucial vertical transportation equipment, and their operational safety is paramount. The elevator car anti-fall safety locking device is a key safety component that ensures the elevator can quickly stop falling, especially in unexpected situations (such as excessive speed descent), thus protecting passenger lives and the elevator itself. Through a series of mechanical structures and corresponding control mechanisms, it monitors the elevator's operating status in real time and brakes promptly in case of abnormalities, making it an indispensable part of the elevator safety system.

[0003] A search revealed Chinese Patent Publication No. CN220998809U, which discloses an elevator car anti-fall device. The device includes a mounting plate, a control switch fixedly mounted on the outer side of the mounting plate, batteries fixedly mounted on both sides of the control switch, an anti-fall mechanism mounted on the outer side of the mounting plate below the control switch, and trigger components mounted on the top of both sides of the mounting plate. The anti-fall mechanism includes a housing fixedly mounted on the outer side of the mounting plate, a drive motor fixedly mounted on the outer side of the housing, and transmission gears installed inside the housing. This invention enables elevator cars to achieve better anti-fall effects during use, preventing elevator falls that could cause injury or death, thus achieving greater safety.

[0004] In the existing technology, although the above-mentioned devices achieve the anti-fall effect through components such as drive motors and transmission gears, in practical applications, it is difficult to achieve precise adaptation for different car sizes through simple adjustments. Moreover, since the position of the rollers is fixed, if there is a dent, it may lead to insufficient contact between the roller components and the shaft, affecting the stability of the anti-fall effect. The safety redundancy under complex working conditions needs to be improved. Therefore, an elevator car anti-fall safety locking device is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an elevator car anti-fall safety locking device, which aims to solve the problem that the existing technology cannot be applied to elevator cars of different sizes.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an elevator car anti-fall safety locking device, comprising a control box, a sleeve rod fixedly connected to the side wall of the control box, a moving rod slidably connected to the inner wall of the sleeve rod, a slider fixedly connected to the top of the moving rod, a threaded rod threadedly connected to the middle of the slider, a connecting frame elastically connected to the left side wall of the moving rod via a return spring, a roller rotatably connected to the inner wall of the connecting frame, a speed sensor provided on the outer wall of the rotating shaft of the roller, a hydraulic rod provided on the top inner wall of the control box, a fixed plate fixedly connected to the movable end of the hydraulic rod, a sliding rod hinged to the bottom end of the fixed plate via a hinge rod, an adjustment mechanism provided on the inner wall of the sliding rod, and a scraping mechanism provided on the top of the connecting frame;

[0007] The adjusting mechanism includes an extension rod, which is threaded onto the inner wall of the sliding rod, and a stop block is rotatably connected to the right end of the extension rod.

[0008] As a further description of the above technical solution:

[0009] The scraping mechanism includes a mounting block, which is fixedly connected to the top of the connecting frame. A scraper is detachably mounted on the inner wall of the mounting block, and a fastening bolt is threaded through and threaded onto the inner wall of the connecting frame.

[0010] As a further description of the above technical solution:

[0011] The fastening bolts penetrate the inner wall of the scraper.

[0012] As a further description of the above technical solution:

[0013] The right end of the scraper is in contact with the outer wall of the roller.

[0014] As a further description of the above technical solution:

[0015] The bottom end of the fixed plate is hinged to one end of the hinge rod, and the other end of the hinge rod is hinged to the top end of the sliding rod.

[0016] As a further description of the above technical solution:

[0017] The sliding rod passes through and is slidably connected to the inner wall of the control box.

[0018] As a further description of the above technical solution:

[0019] The inner wall of the left end of the moving rod is fixedly connected to one end of the return spring, and the other end of the return spring is fixedly connected to the left end of the connecting frame. The connecting frame is slidably connected to the inner wall of the moving rod.

[0020] As a further description of the above technical solution:

[0021] The threaded rod is rotatably connected to the top of the sleeve rod via a bracket, and the speed sensor is fixedly connected to the outer wall of the connecting frame.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, by rotating the threaded rod, extension rod, etc., the contact state between the roller and the elevator shaft wall and the position of the abutment block can be conveniently adjusted to ensure that the device can accurately adapt to different elevator cars and work normally.

[0024] 2. In this utility model, the scraper can be used to clean the roller, ensuring the friction between the roller and the elevator shaft wall. The entire scraper can be quickly replaced by turning the fastening bolts, making it simple and convenient in actual operation. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of an elevator car anti-fall safety locking device proposed in this utility model;

[0026] Figure 2 This is a cross-sectional schematic diagram of the sleeve rod and the moving rod of the elevator car anti-fall safety locking device proposed in this utility model;

[0027] Figure 3 This is a cross-sectional schematic diagram of the control box of an elevator car anti-fall safety locking device proposed in this utility model;

[0028] Figure 4 This is an exploded view of the sliding rod and extension rod of an elevator car anti-fall safety locking device proposed in this utility model.

[0029] Legend:

[0030] 1. Control box; 2. Sleeve rod; 3. Moving rod; 4. Slider; 5. Threaded rod; 6. Return spring; 7. Connecting frame; 8. Roller; 9. Speed ​​sensor; 10. Hydraulic rod; 11. Fastening bolt; 12. Fixing plate; 13. Hinge rod; 14. Sliding rod; 15. Extension rod; 16. Abutment block; 17. Mounting block; 18. Scraper. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Reference Figures 1-3 This utility model provides an embodiment of an elevator car anti-fall safety locking device, including a control box 1. The control box 1 is equipped with mounting feet, which can be used to install the device on the bottom of the elevator car via bolts. A sleeve rod 2 is fixedly connected to the side wall of the control box 1. A moving rod 3 is slidably connected to the inner wall of the sleeve rod 2. A slider 4 is fixedly connected to the top of the moving rod 3. The middle of the slider 4 has a thread corresponding to the threaded rod 5, allowing the slider 4 to move laterally along the outer wall of the threaded rod 5. The middle of the slider 4 is threadedly connected to the threaded rod 5. A connecting frame 7 is elastically connected to the left side wall of the moving rod 3 via a return spring 6. The connecting frame 7 mainly supports and connects the entire roller 8. The inner wall of the connecting frame 7 is rotatably connected to the roller 8. A speed sensor 9 is installed on the outer wall of the rotating shaft. The speed sensor 9 is a sensor that converts the physical quantity of the rotational speed of a rotating object into a corresponding signal that can be output, such as an electrical signal or a pulse signal, which is convenient for measurement and analysis. It aims to accurately obtain the rotational speed data of the rotating parts. It is a conventional technology and will not be described in detail here. A hydraulic rod 10 is installed on the inner wall of the top of the control box 1. The hydraulic rod 10 is a high-precision hydraulic rod. A high-precision hydraulic rod is an actuator that can realize high-precision linear motion control in a hydraulic transmission system. The movable end of the hydraulic rod 10 is fixedly connected to a fixed plate 12. The bottom end of the fixed plate 12 is hinged to a sliding rod 14 through a hinge rod 13. An adjustment mechanism is installed on the inner wall of the sliding rod 14. A scraping mechanism is installed on the top of the connecting frame 7.

[0033] The adjustment mechanism includes an extension rod 15, which is threaded to the inner wall of the sliding rod 14. The inner wall of the sliding rod 14 has a thread that matches the extension rod 15, allowing the extension rod 15 to move along the inner wall of the sliding rod 14. The right end of the extension rod 15 is rotatably connected to a stop block 16, the side wall of which is made of S rubber material, which can increase the friction with the elevator shaft.

[0034] Reference Figures 1-3 The scraping mechanism includes a mounting block 17, which is fixedly connected to the top of the connecting frame 7. A scraper 18 is detachably mounted on the inner wall of the mounting block 17. The scraper 18 is made of hard rubber material and can contact the surface of the roller 8 to scrape off impurities. A fastening bolt 11 is threaded through and threaded onto the inner wall of the connecting frame 7. The connecting frame 7 has grooves corresponding to the fastening bolt 11 to allow the fastening bolt 11 to be connected to the connecting frame 7. The fastening bolt 11 passes through the inner wall of the scraper 18, and the right end of the scraper 18 contacts the outer wall of the roller 8.

[0035] Reference Figures 3-4The bottom end of the fixed plate 12 is hinged to one end of the hinge rod 13. Since the length of the hinge rod 13 is fixed, when the fixed plate 12 moves downward with one end of the hinge rod 13, it will cause the other end of the hinge rod 13 and the sliding rod 14 to separate from each other. Conversely, when the fixed plate 12 moves upward with one end of the hinge rod 13, it will cause the other end of the hinge rod 13 and the sliding rod 14 to move closer together. The other end of the hinge rod 13 is hinged to the top end of the sliding rod 14. The sliding rod 14 passes through and is slidably connected to the inner wall of the control box 1. A slot is provided to allow the sliding rod 14 to move along the inner wall of the control box 1. The left end of the inner wall of the moving rod 3 is fixedly connected to one end of the return spring 6. When the connecting frame 7 moves to the left, it will compress the return spring 6. When resetting, the elastic force of the return spring 6 will carry the connecting frame 7 to reset. The other end of the return spring 6 is fixedly connected to the left end of the connecting frame 7. The connecting frame 7 is slidably connected to the inner wall of the moving rod 3. The threaded rod 5 is rotatably connected to the top of the sleeve rod 2 through the bracket. The speed sensor 9 is fixedly connected to the outer wall of the connecting frame 7.

[0036] Working principle: First, depending on the elevator car, when using the device, simply rotate the threaded rod 5 to move the slider 4 to the right along the outer wall of the threaded rod 5. This allows the slider 4 to move the moving rod 3 and the connecting frame 7 to the right, and the roller 8 to contact the wall of the elevator shaft. Continue rotating the threaded rod 5 to generate a reaction force between the roller 8 and the wall of the elevator shaft, causing the connecting frame 7 to move to the left along the inner wall of the moving rod 3 and compress the return spring 6. This positions the left end of the connecting frame 7 in the middle of the moving rod 3. At this point, rotate the extension rod 15 to move it to the right along the inner wall of the sliding rod 14. Adjust the stop block 16 to be located at the lower end of the roller 8. When adjusting again, the same steps can be followed.

[0037] During operation, the elevator car moves up and down along the guide rail, causing the device to move synchronously. At this time, the roller 8 will roll along the wall of the elevator shaft as the car moves. The speed sensor 9 continuously monitors the speed of the roller 8. As long as the speed remains within the preset normal range, it indicates that the elevator is running smoothly and all components continue to maintain their current state. At the same time, if dust or other impurities adhere to the surface of the roller 8 during its rolling process, the scraper 18 will scrape them off in time to ensure good rolling contact between the roller 8 and the elevator shaft wall. This prevents the accumulation of impurities from affecting the rotation of the roller 8 and thus interfering with the monitoring of the elevator's operating status. During operation, if there is a protrusion on the wall of the elevator shaft, the roller 8 will generate a reaction force that continuously compresses the return spring 6. The return spring 6 uses its own elasticity to keep the connecting frame 7 and the roller 8 in contact with the wall of the elevator shaft. If there is a depression, the return spring 6 uses its own return elasticity to keep the connecting frame 7 and the roller 8 in contact with the wall of the elevator shaft. The scraper 18 can be replaced by turning the fastening bolt 11, which is simple and convenient.

[0038] When an elevator malfunctions, such as overspeeding, the speed sensor 9 detects that the roller 8's speed exceeds the normal range. It immediately transmits this abnormal speed signal to the hydraulic rod 10, issuing a control command to it. The hydraulic rod 10 then begins to operate. The movable end of the hydraulic rod 10 pushes the fixed plate 12 downward, causing the sliding rod 14 to separate from each other along the groove on the inner wall of the control box 1 and move to both sides. The abutment block 16 at the right end of the extension rod 15 gradually approaches and finally presses firmly against the elevator shaft wall. The side wall of the abutment block 16 is made of S-rubber material, which increases the friction between the abutment block 16 and the elevator shaft wall. This friction helps to brake and prevent the car from falling further, ensuring the safety of the elevator and passengers.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An elevator car anti-fall safety locking device, comprising a control box (1), characterized in that: The control box (1) is fixedly connected to a sleeve rod (2), the inner wall of the sleeve rod (2) is slidably connected to a moving rod (3), the top end of the moving rod (3) is fixedly connected to a slider (4), the middle part of the slider (4) is threadedly connected to a threaded rod (5), the left side wall of the moving rod (3) is elastically connected to a connecting frame (7) through a return spring (6), the inner wall of the connecting frame (7) is rotatably connected to a roller (8), the outer wall of the rotating shaft of the roller (8) is provided with a speed sensor (9), the top inner wall of the control box (1) is provided with a hydraulic rod (10), the movable end of the hydraulic rod (10) is fixedly connected to a fixed plate (12), the bottom end of the fixed plate (12) is hinged to a sliding rod (14) through a hinge rod (13), the inner wall of the sliding rod (14) is provided with an adjustment mechanism, and the top end of the connecting frame (7) is provided with a scraping mechanism; The adjustment mechanism includes an extension rod (15), which is threaded onto the inner wall of the sliding rod (14), and a stop block (16) is rotatably connected to the right end of the extension rod (15).

2. The elevator car anti-fall safety locking device according to claim 1, characterized in that: The scraping mechanism includes a mounting block (17), which is fixedly connected to the top of the connecting frame (7). The inner wall of the mounting block (17) is detachably fitted with a scraper (18), and the inner wall of the connecting frame (7) is threadedly connected with a fastening bolt (11).

3. The elevator car anti-fall safety locking device according to claim 2, characterized in that: The fastening bolt (11) passes through the inner wall of the scraper (18).

4. The elevator car anti-fall safety locking device according to claim 2, characterized in that: The right end of the scraper (18) is in contact with the outer wall of the roller (8).

5. The elevator car anti-fall safety locking device according to claim 1, characterized in that: The bottom end of the fixed plate (12) is hinged to one end of the hinge rod (13), and the other end of the hinge rod (13) is hinged to the top end of the sliding rod (14).

6. The elevator car anti-fall safety locking device according to claim 1, characterized in that: The sliding rod (14) passes through and is slidably connected to the inner wall of the control box (1).

7. The elevator car anti-fall safety locking device according to claim 1, characterized in that: The inner wall of the left end of the moving rod (3) is fixedly connected to one end of the return spring (6), and the other end of the return spring (6) is fixedly connected to the left end of the connecting frame (7). The connecting frame (7) is slidably connected to the inner wall of the moving rod (3).

8. The elevator car anti-fall safety locking device according to claim 1, characterized in that: The threaded rod (5) is rotatably connected to the top of the sleeve rod (2) via a bracket, and the speed sensor (9) is fixedly connected to the outer wall of the connecting frame (7).

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