A gap detection device for elevator maintenance
Patent Information
- Application Number
- CN202521880264.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-02
- Publication Date
- 2026-09-29
- Estimated Expiration
- 2035-09-02
AI Technical Summary
这类工具虽能完成基础测量，但在电梯复杂的实际环境中存在明显局限：一方面，电梯井道内空间狭窄，部件布局紧凑，部分缝隙位于倾斜面或隐蔽角落（如导轨支架与导轨的侧向间隙），传统工具因长度固定、角度不可调，难以深入检测位置，维修人员需反复调整握持姿势甚至借助辅助工具，不仅操作繁琐，还易因视角偏差导致测量数据失真；另一方面，传统工具的读数依赖人工观察，塞尺插入缝隙后需手动固定位置再读取刻度，若手部轻微晃动就会影响测量稳定性，尤其在检测 0.5mm 以下的细微缝隙时，人为误差显著，难以满足电梯维修对精度的严苛要求
1、检测角度灵活可调，适配复杂场景：依托伺服电机、主齿轮与从齿轮的啮合传动结构，可通过控制器精准驱动装置主体绕从转动轴转动，灵活调节缝隙检测头的倾斜角度，这一设计能轻松应对电梯井道内导轨间隙、轿厢与层门缝隙等不同方位、角度的检测需求，尤其适用于电梯部件布局紧凑、检测视角受限的复杂场景，无需维修人员反复调整握持姿势，大幅提升了检测操作的便利性。
Smart Images
Figure CN224812018U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of gap detection devices, specifically a gap detection device for elevator maintenance. Background Technology
[0002] In the daily operation and maintenance of elevators, the condition of gaps between components is a key indicator for measuring the safety and stability of elevator operation. Whether it is the fit gap between the car and guide rails, the sealing gap between the landing door and the door frame, or the working gap between the brake shoes and the brake wheel, whether their dimensions are within the standard range directly affects the elevator's operating accuracy. Excessive gaps can easily cause car shaking, abnormal operating noises, and even lead to component loosening; insufficient gaps may cause excessive wear and jamming of components, creating potential mechanical failure hazards. Therefore, accurate inspection of these gaps is an essential step after elevator installation, commissioning, regular maintenance, and fault repair.
[0003] In existing technologies, gap detection in elevator maintenance scenarios largely relies on traditional tools such as feeler gauges and vernier calipers. While these tools can perform basic measurements, they have significant limitations in the complex real-world environment of elevators: Firstly, the elevator shaft is narrow, with compact component layouts, and some gaps are located on inclined surfaces or in hidden corners (such as the lateral gap between the guide rail bracket and the guide rail). Traditional tools, due to their fixed length and non-adjustable angle, are difficult to penetrate to the detection location. Maintenance personnel need to repeatedly adjust their grip and even use auxiliary tools, which is not only cumbersome but also prone to data distortion due to perspective deviations. Secondly, readings from traditional tools rely on manual observation. After inserting a feeler gauge into the gap, its position must be manually fixed before reading the scale. Even slight hand tremors can affect measurement stability, especially when detecting tiny gaps smaller than 0.5mm, where human error is significant and cannot meet the stringent accuracy requirements of elevator maintenance. Therefore, those skilled in the art have provided a gap detection device for elevator maintenance to solve the problems mentioned in the background. Utility Model Content
[0004] The purpose of this invention is to provide a gap detection device for elevator maintenance, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: A gap detection device for elevator maintenance includes a main body, a movable frame, a handle, and a gap detection head. A fixed plate is located at the front end of the main body, and the fixed plate is fixedly connected to the main body. A movable frame is slidably connected to the fixed plate. Two spring rods are located on the rear side of the fixed plate, with one end of each spring rod fixedly connected to the fixed plate and the other end fixedly connected to a limit ring. Two spring blocks are fixedly connected to the rear end of the movable frame, and the spring blocks are slidably connected to the spring rods. A battery is fixedly installed inside the main body. A dual-head motor is located in front of the battery and fixedly mounted on the main body. Both ends of the dual-head motor have threaded rods, which are rotatably connected to the main body. Hexagonal sliders are threaded onto each threaded rod and slidably connected to the main body.
[0006] As a further embodiment of this utility model: a gap detection head is provided at the front end of the fixed plate, wherein the gap detection head is fixedly connected to the fixed plate, and scale data is provided on both the upper and lower sides of the gap detection head. The fixed plate has two through holes on the left and right, through which the movable frame passes.
[0007] As a further improvement of this utility model: a charging interface is provided on one side of the main body of the device, through which the battery can be charged; a mounting base is provided at the rear end of the main body of the device, wherein the mounting base is fixedly connected to the main body of the device; a shell is provided behind the mounting base; and a movable block is provided at the front end of the shell, wherein the movable block is fixedly connected to the shell.
[0008] As a further embodiment of this utility model: a driven shaft is rotatably connected to the movable block, wherein the driven shaft is fixedly connected to the mounting base, a driven gear is fixedly connected to one end of the driven shaft, and a servo motor is provided inside the housing, wherein the servo motor is fixedly installed inside the housing.
[0009] As a further embodiment of this utility model: the power output end of the servo motor is fixedly connected to a main rotating shaft, wherein the main rotating shaft is rotatably connected to the outer shell, and a main gear is fixedly connected to the outer wall of the main rotating shaft, wherein the main gear meshes with the driven gear, a handle is provided at the lower end of the outer shell, wherein the handle is fixedly connected to the outer shell, and a controller is fixedly installed at the rear end of the outer shell.
[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. Flexible and adjustable detection angle to adapt to complex scenarios: Relying on the meshing transmission structure of servo motor, main gear and driven gear, the main body of the device can be precisely driven by the controller to rotate around the driven rotation axis, and the tilt angle of the gap detection head can be flexibly adjusted. This design can easily cope with the detection needs of different directions and angles such as guide rail gaps in elevator shafts and gaps between car and landing doors. It is especially suitable for complex scenarios where elevator components are compact and the detection angle is limited. Maintenance personnel do not need to repeatedly adjust their holding posture, which greatly improves the convenience of detection operation.
[0011] 2. Precise and stable gap readings, reducing human error: During testing, the moving frame moves synchronously as the gap detection head penetrates the gap. The elastic force of the spring rod ensures that the moving frame fits tightly against the edge of the gap, avoiding positional shifts caused by unstable fit. Once the moving frame is in place, the dual-head motor drives the hexagonal slider to quickly lock the position of the moving frame. At this time, the front end of the moving frame precisely points to the scale data, realizing a continuous process of "real-time fit - stable locking - accurate reading". This effectively avoids measurement errors caused by unstable manual support and line-of-sight deviations during reading, as is common with traditional feeler gauges and other tools, thus improving the accuracy of gap detection.
[0012] 3. Convenient and efficient operation, reducing the barrier to entry: Operators only need to hold the handle to operate the device and adjust the angle through the controller, without the need for complicated mechanical adjustment steps; after the test is completed, the double-head motor can be restarted in reverse to release the lock, and the moving frame will automatically reset under the elastic force of the spring rod, eliminating the tedious operation of manual reset. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of a gap detection device used for elevator maintenance.
[0014] Figure 2 This is a schematic diagram of the handle and controller in a gap detection device used for elevator maintenance.
[0015] Figure 3 This is a schematic diagram of the structure of a dual-head motor and a servo motor in a gap detection device for elevator maintenance.
[0016] Figure 4 This is a schematic diagram of the spring rod and fixing plate in a gap detection device for elevator maintenance.
[0017] Figure 5 This is a schematic diagram of the spring block and the moving frame in a gap detection device for elevator maintenance.
[0018] In the diagram: 1. Main body of the device; 2. Battery; 3. Gap detection head; 4. Scale data; 5. Moving frame; 6. Spring block; 7. Spring rod; 8. Fixing plate; 9. Through-hole; 10. Dual-head motor; 11. Threaded rod; 12. Hexagonal slider; 13. Mounting base; 14. Movable block; 15. Outer shell; 16. Servo motor; 17. Main gear; 18. Slave gear; 19. Handle; 20. Controller; 22. Charging interface. Detailed Implementation
[0019] To facilitate understanding of the technical means, creative features, objectives, and effects of this utility model, the following detailed description of specific embodiments further illustrates this utility model. In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" 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; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0020] Please see Figures 1-5In this embodiment of the present invention, a gap detection device for elevator maintenance includes a device body 1, a movable frame, a handle 19, and a gap detection head 3. A fixed plate 8 is provided at the front end of the device body 1, and the fixed plate 8 is fixedly connected to the device body 1. A movable frame 5 is slidably connected to the fixed plate 8. Two spring rods 7 are provided at the rear side of the fixed plate 8, with one end of each spring rod 7 fixedly connected to the fixed plate 8 and the other end fixedly connected to a limit ring. Two spring blocks 6 are fixedly connected to the rear end of the movable frame 5, and the spring blocks 6 are slidably connected to the spring... A battery 2 is fixedly installed inside the main body 1 on the spring rod 7. A dual-head motor 10 is located in front of the battery 2. The dual-head motor 10 is fixedly installed on the main body 1. Threaded rods 11 are provided at both ends of the dual-head motor 10. The threaded rods 11 are rotatably connected to the main body 1. Hexagonal sliders 12 are threadedly connected to each threaded rod 11. The hexagonal sliders 12 are slidably connected to the main body 1. A gap detection head 3 is provided at the front end of the fixed plate 8. The gap detection head 3 is fixedly connected to the fixed plate 8. The gap clamp detection head is provided on both the upper and lower sides. The device has a scale data 4. A fixed plate 8 has two through-holes 9 on the left and right sides, through which a movable frame 5 passes. A charging interface 22 is located on one side of the main body 1, through which the battery 2 can be charged. A mounting base 13 is located at the rear of the main body 1, and is fixedly connected to the main body 1. A housing 15 is located behind the mounting base 13, and a movable block 14 is located at the front end of the housing 15. The movable block 14 is fixedly connected to the housing 15, and a rotating shaft is rotatably connected to the movable block 14. The rotating shaft is connected to the mounting base 15. The base 13 is fixedly connected together, and a driven gear 18 is fixedly connected to one end of the rotating shaft. A servo motor 16 is installed inside the housing 15, and the servo motor 16 is fixedly installed inside the housing 15. The power output end of the servo motor 16 is fixedly connected to the main rotating shaft, which is rotatably connected to the housing 15. A main gear 17 is fixedly connected to the outer wall of the main rotating shaft, and the main gear 17 meshes with the driven gear 18. A handle 19 is provided at the lower end of the housing 15, and the handle 19 is fixedly connected to the housing 15. A controller 20 is fixedly installed at the rear end of the housing 15.
[0021] The working principle of this utility model is as follows: When the elevator needs to be inspected by the gap detection device after maintenance, firstly, the operator holds the handle 19 and starts the servo motor 16 to drive the main rotating shaft to rotate. The main rotating shaft drives the main gear 17 to rotate, the main gear 17 drives the driven gear 18 to rotate, the driven gear 18 drives the driven shaft to rotate, the driven shaft drives the mounting base 13 to rotate, and the mounting base 13 drives the main body 1 of the device to rotate. This allows the gap detection head 3 to be adjusted to a suitable tilt angle. Then, the gap detection head 3 can be moved to the gap and further into the gap until it is aligned with the gap. As the gap detection head 3 penetrates deeper into the gap, the movement... The frame 5 will be blocked by an object, and will move backward along the through-hole 9. At the same time, the spring block 6 will compress the spring on the spring rod 7. Then, the double-headed motor 10 will be started to drive the threaded rod 11 to rotate. The threaded rod 11 will drive the hexagonal slider 12 to slide to the left and right until it locks the moving frame 5. At this time, the front end of the moving frame 5 points directly to the scale data 4. Then, the gap detection head 3 will be retracted and read according to the scale data 4 indicated by the moving frame 5. Finally, the double-headed motor 10 will be started to make the threaded rod 11 rotate in the opposite direction. The hexagonal slider 12 will retract inward and release the lock on the moving frame 5. Then, under the action of the elastic force of the spring rod 7, the slider will drive the moving frame 5 to move forward to the initial position.
[0022] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0023] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A gap detection device for elevator maintenance, comprising a device body (1), a movable frame, a handle (19), and a gap detection head (3), characterized in that, The device body (1) has a fixed plate (8) at the front end, which is fixedly connected to the device body (1). A movable frame (5) is slidably connected to the fixed plate (8). Two spring rods (7) are provided on the rear side of the fixed plate (8). One end of the spring rod (7) is fixedly connected to the fixed plate (8), and the other end of the spring rod (7) is fixedly connected to a limit ring. Two spring blocks (6) are fixedly connected to the rear end of the movable frame (5). The spring blocks (6) are slidably connected to the spring rods (7). A storage battery (2) is fixedly installed inside the device body (1). A dual-head motor (10) is provided in front of the storage battery (2). The dual-head motor (10) is fixedly installed on the device body (1). Threaded rods (11) are provided on both the left and right ends of the dual-head motor (10). The threaded rods (11) are rotatably connected to the device body (1). Hexagonal sliders (12) are threadedly connected to the threaded rods (11). The hexagonal sliders (12) are slidably connected to the device body (1).
2. The gap detection device for elevator maintenance according to claim 1, characterized in that, The front end of the fixed plate (8) is provided with a gap detection head (3), wherein the gap detection head (3) is fixedly connected to the fixed plate (8), and scale data (4) is provided on both the upper and lower sides of the gap detection head.
3. The gap detection device for elevator maintenance according to claim 1, characterized in that, The fixed plate (8) has two through holes (9) on the left and right sides, through which the movable frame (5) passes through the through holes (9), and a charging interface (22) is provided on one side of the main body (1).
4. The gap detection device for elevator maintenance according to claim 1, characterized in that, The device body (1) has a mounting base (13) at its rear end, wherein the mounting base (13) is fixedly connected to the device body (1), and a shell (15) is provided behind the mounting base (13).
5. A gap detection device for elevator maintenance according to claim 4, characterized in that, The front end of the outer shell (15) is provided with a movable block (14), wherein the movable block (14) is fixedly connected to the outer shell (15), and a rotating shaft is rotatably connected to the movable block (14), wherein the rotating shaft is fixedly connected to the mounting base (13), and a gear (18) is fixedly connected to one end of the rotating shaft.
6. A gap detection device for elevator maintenance according to claim 4, characterized in that, A servo motor (16) is provided inside the housing (15), wherein the servo motor (16) is fixedly installed inside the housing (15).
7. A gap detection device for elevator maintenance according to claim 6, characterized in that, The servo motor (16) has a main rotating shaft fixedly connected to its power output end. The main rotating shaft is rotatably connected to the outer shell (15). A main gear (17) is fixedly connected to the outer wall of the main rotating shaft. The main gear (17) meshes with the driven gear (18).
8. A gap detection device for elevator maintenance according to claim 4, characterized in that, The lower end of the outer shell (15) is provided with a handle (19), wherein the handle (19) is fixedly connected to the outer shell (15), and a controller (20) is fixedly installed at the rear end of the outer shell (15).