Measuring instrument for distance between elevator car and well wall

Abstract

The utility model relates to an elevator car and hoistway wall distance measuring instrument which comprises a host and a vertical measuring module, the vertical measuring module is arranged on the top face of an elevator car and comprises a first shell and a first laser sensor arranged on the first shell, and the elevator car and hoistway wall distance measuring instrument further comprises a horizontal measuring module. The horizontal measurement module comprises a second shell, a second laser sensor and a tilt angle sensor, wherein the second laser sensor and the tilt angle sensor are arranged on the second shell. The second shell is installed below the lift car through an installation frame. According to the measuring instrument for the distance between the lift car and the well wall, the horizontal measuring module is installed below the lift car through the installation frame, and the horizontal measuring module can measure the distance between the well wall below a bottom landing through the second laser sensor and the tilt angle sensor of the horizontal measuring module. Therefore, the non-blind area automatic detection of the distance between the well wall and the lift car is realized.

Description

Technical Field

[0001] This utility model relates to a special equipment testing device, and more particularly to a distance measuring instrument for elevator car and shaft wall. Background Technology

[0002] In elevator inspection and testing, traditional manual methods for measuring the distance between the car and the hoistway wall are not only time-consuming and labor-intensive, but also suffer from inaccurate and incomplete measurement data, and pose risks to inspectors such as being squeezed or sheared by the elevator. Some existing automated measuring equipment has drawbacks, such as complex installation and deployment processes, and susceptibility to dust and strong light when using pure laser ranging solutions. The most significant drawback is that most similar measuring devices use a car-top placement method when measuring the distance between the car and the hoistway wall. This introduces an unsolvable problem: when the measuring device is placed on the car top, it cannot reach the bottom floor, resulting in a measurement blind zone below the bottom floor. Therefore, designing a car-hoistway wall distance measuring device without blind zones is essential. Summary of the Invention

[0003] To solve the above-mentioned technical problems, this utility model provides an elevator car-sharing distance measuring instrument with no blind spot that can detect the distance between the hoistway wall and the car below the bottom floor.

[0004] The elevator car-shaft wall distance measuring instrument of this utility model includes a main unit and a vertical measuring module. The vertical measuring module is disposed on the top surface of the car and includes a first housing and a first laser sensor disposed on the first housing. The first laser sensor is connected to the main unit via a cable. The elevator car-shaft wall distance measuring instrument also includes a horizontal measuring module. The horizontal measuring module includes a second housing, a second laser sensor and an inclination sensor disposed on the second housing. The second housing is installed below the car via a mounting bracket. The second laser sensor and the inclination sensor are wirelessly connected to the main unit via a wireless module.

[0005] The advantage of this elevator car-shaft wall distance measuring instrument is that it not only has a vertical measuring module installed on the top surface of the car, which enables accurate measurement of the distance between the car and the upper shaft wall through the first laser sensor of the vertical measuring module, but also has a horizontal measuring module installed below the car through a mounting bracket. The horizontal measuring module, through its second laser sensor and tilt sensor, can measure the distance between the shaft wall below the bottom floor, thus achieving blind-spot-free automated detection of the distance between the shaft wall and the car.

[0006] Furthermore, in the elevator car-sharing distance measuring instrument of this utility model, the vertical measurement module also includes an acceleration sensor, which is disposed inside the first housing.

[0007] The installation of the accelerometer increases the measurement scenarios for the elevator car-shaft wall distance measuring instrument, and reduces the impact of dust in the shaft and strong light in the glass shaft on the first laser sensor.

[0008] Furthermore, in the elevator car and shaft wall distance measuring instrument of this utility model, a magnetic array is provided at the bottom of the first housing. The magnetic array includes several magnetic components, and the first housing is attracted to the top surface of the car through the magnetic array.

[0009] The magnetic array facilitates the deployment of vertical measurement modules by inspection personnel, thereby improving inspection efficiency.

[0010] Furthermore, in the elevator car and shaft wall distance measuring instrument of this utility model, the mounting frame includes a metal connecting rod connected to the top and bottom of the car, a universal rod connected to the bottom end of the metal connecting rod, one end of the universal rod being connected to the metal connecting rod via a universal joint, and the second housing being fixedly installed on the front end of the universal rod.

[0011] The inclusion of metal connecting rods and universal joints facilitates the installation and adjustment of the horizontal measurement module by inspection personnel, thereby enabling the measurement of the distance between the hoistway sidewall and the car.

[0012] Furthermore, in the elevator car and shaft wall distance measuring instrument of this utility model, the top of the metal connecting rod is provided with a base, the base is made of strong magnetic material, and the base is attached to the bottom surface of the car.

[0013] The base design allows operators to quickly connect the mounting bracket to the bottom of the car, thus facilitating the installation and adjustment of the level measurement module.

[0014] Furthermore, in the elevator car and shaft wall distance measuring instrument of this utility model, the end of the metal connecting rod connected to the universal rod is also provided with a locking sleeve, and the locking sleeve is provided with a locking rod threadedly connected to the locking sleeve, and the outer end of the locking rod has a locking handwheel.

[0015] The locking sleeve, locking rod, and locking handwheel make it easy for testing personnel to lock the universal rod to the end of the metal connecting rod, thereby locking and fixing the horizontal measuring module.

[0016] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the following describes the embodiments of this utility model in detail. Attached Figure Description

[0017] Figure 1 This is a diagram showing the operational status of the elevator car-sharing distance measuring instrument.

[0018] Figure 2This is a schematic diagram showing the connection between the main unit and the vertical measurement module.

[0019] Figure 3 This is a schematic diagram of the horizontal measurement module.

[0020] Figure 4 This is a structural diagram of the mounting bracket.

[0021] Figure 5 This is a schematic diagram showing the connection between the horizontal measurement module and the mounting bracket.

[0022] Figure 6 This is a schematic diagram of the electrical connection between the main unit and the vertical measurement module.

[0023] Figure 7 This is a schematic diagram of the electrical connections for the horizontal measurement module.

[0024] In the diagram, the components are: main unit 1, vertical measurement module 2, car 3, first housing 4, first laser sensor 5, horizontal measurement module 6, second housing 7, second laser sensor 8, tilt sensor 9, mounting bracket 10, upper shaft wall 11, acceleration sensor 12, magnetic component 13, main unit housing 14, display module 15, data input module 16, metal connecting rod 17, universal rod 18, locking sleeve 19, locking rod 20, locking handwheel 21, base 22, and foot guard 23. Detailed Implementation

[0025] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0026] Example 1: See Figures 1 to 7 The elevator car-shaft wall distance measuring instrument of this embodiment includes a main unit 1 and a vertical measurement module 2. The vertical measurement module is disposed on the top surface of the car 3. The vertical measurement module includes a first housing 4 and a first laser sensor 5 disposed on the first housing. The first laser sensor is connected to the main unit via a cable. The elevator car-shaft wall distance measuring instrument also includes a horizontal measurement module 6. The horizontal measurement module includes a second housing 7, a second laser sensor 8 disposed on the second housing, and an inclination sensor 9. The second housing is installed below the car via a mounting bracket 10. The second laser sensor and the inclination sensor are wirelessly connected to the main unit via a wireless module.

[0027] The advantage of this elevator car-shaft wall distance measuring instrument is that it not only has a vertical measuring module installed on the top surface of the car, which enables accurate measurement of the distance between the car and the upper shaft wall through the first laser sensor of the vertical measuring module, but also has a horizontal measuring module installed below the car through a mounting bracket. The horizontal measuring module, through its second laser sensor and tilt sensor, can measure the distance between the shaft wall below the bottom floor, thus achieving blind-spot-free automated detection of the distance between the shaft wall and the car.

[0028] The vertical measurement module is used to detect the distance between the top surface of the car and the upper shaft wall, as well as the vertical motion data of the car. It includes a first housing and a first laser sensor mounted on the first housing.

[0029] The first laser sensor is used to detect the distance between the top surface of the car and the upper shaft wall. The laser emitted by its laser emitter is reflected by the upper shaft wall 11 to the laser receiver of the first laser sensor and converted into a corresponding electrical signal. The electrical signal is then transmitted to the host through a cable. The host calculates the distance between the car and the shaft wall at this moment through its built-in program.

[0030] Due to the long vertical distance of the elevator shaft, in order to increase the measurement scenarios for the equipment and reduce the impact of dust in the shaft or strong light in the glass shaft on the first laser sensor, an acceleration sensor 12 can also be installed inside the first housing. The acceleration sensor is connected to the host via a cable, thereby transmitting the acceleration sensor's signal data to the host, so that the host can obtain the motion data of the car through the acceleration signal.

[0031] In this embodiment, a magnetic array is provided at the bottom of the first housing of the vertical measurement module. The magnetic array includes several magnetic components 13. The first housing is attached to the top surface of the metal car through the magnetic array.

[0032] The aforementioned first laser sensor is installed on the top wall of the first housing, with its laser output and receiving ends facing the upper wellbore wall, and the acceleration sensor is installed on the inner wall of the first housing.

[0033] The aforementioned host is also installed on the top surface of the car. It includes a host housing 14, with a display module 15 and a data input module 16 disposed on the surface of the host housing. An electronic control board is disposed inside, and a main control module is disposed on the electronic control board. The main control module can be a microcontroller, DSP, or other logic control device. Its pins are connected to a data storage module, wireless Bluetooth, power supply module, data input module, and serial port via corresponding wires. The power supply module is also connected to the display module, data storage module, and wireless Bluetooth via wires, and to the aforementioned first laser sensor and accelerometer via cables, thereby supplying power to each device. The data output terminals of the first laser sensor and accelerometer are respectively connected to two serial ports of the host via cables, thereby enabling serial communication with the main control module. The display module is preferably an LED screen, the data storage module is preferably an SD card, and the data input module is preferably a membrane keyboard.

[0034] The aforementioned horizontal measurement module is used to detect the distance between the car and the hoistway sidewall, and it is mounted below the car via a mounting bracket. The horizontal measurement module includes a second housing and a second laser sensor and a tilt sensor mounted on the second housing. In this embodiment, the second laser sensor is mounted at the front end of the second housing, and the tilt sensor is mounted on the surface of the second housing. A control board is also provided inside the second housing, and the control board also has a main control module. Similar to the vertical measurement module, each pin of this main control module is connected to a data storage module, Bluetooth wireless, two serial ports, and a power supply module on the control board via corresponding wires. The power supply module is also connected to the data storage module, Bluetooth wireless, the second laser sensor, and the tilt sensor via wires. The second laser sensor and the tilt sensor are respectively connected to the two serial ports on the control board via cables, thereby achieving serial communication with the main control module. The main control module pairs with the Bluetooth wireless in the host computer via Bluetooth wireless, thereby achieving wireless connection between the horizontal measurement module and the main control module in the host computer.

[0035] The aforementioned mounting bracket is used to install the horizontal measurement module. In this embodiment, the mounting bracket includes a metal connecting rod 17 connected to the bottom of the car at its top. A universal rod 18 is connected to the bottom end of the metal connecting rod. One end of the universal rod is connected to the metal connecting rod via a universal joint. A locking sleeve 19 is also provided at the end of the metal connecting rod connected to the universal rod. A locking rod 20 is provided on the locking sleeve and is threadedly connected to the locking sleeve. The inner end of the locking rod can contact the universal rod, and the outer end of the locking rod has a locking handwheel 21. The inspection personnel can lock the universal rod to the metal connecting rod by rotating the locking handwheel.

[0036] The aforementioned universal rod is tilted, forming an angle with the horizontal plane. The second housing is fixedly installed at the front end of the universal rod. In use, the operator adjusts the orientation of the horizontal measuring module by rotating the universal rod and locks the universal rod by locking the handwheel.

[0037] The metal connecting rod can be attached to the bottom of the car via a base 22 made of strong magnetic material, which facilitates the deployment of the horizontal detection module by the inspection personnel, improves the efficiency and effectiveness of the inspection, and achieves blind spot-free monitoring.

[0038] The membrane keyboard mentioned above is used to perform input operations. Operators can use the membrane keyboard to set information such as the car's initial point and elevator number.

[0039] In summary, this elevator car-sharing distance measuring instrument mainly comprises a vertical measurement module, a horizontal measurement module, a mounting bracket, and a main unit. The vertical measurement module has a magnetic array at its bottom that allows it to adhere to the top of the car and is electrically connected to the main unit via cable. The mounting bracket base is made of strong magnetic material and can adhere to the bottom of the car, mechanically connected to the horizontal measurement module via a metal connecting rod. The horizontal measurement module is wirelessly connected to the main unit. The vertical measurement module measures the vertical movement distance of the elevator using a first laser sensor and an accelerometer. This measurement data is transmitted to the main unit via a communication cable to obtain the floor position information. The horizontal measurement module measures the distance between the elevator car and the hoistway sidewall using a second laser sensor and an inclination sensor. This measurement data is transmitted to the main unit wirelessly via Bluetooth. The main unit processes the data reported by the vertical and horizontal measurement modules, displays the data in real time through a display module, and stores the data in a storage module. This device enables fully automated measurement of the distance between the elevator car and the hoistway wall, reducing manpower, improving detection efficiency, and enhancing the reliability of the detection data.

[0040] During the measurement, the inspectors first connect the main unit and the level measurement module wirelessly via Bluetooth, and then set initial information such as the elevator number through the data input module to uniquely identify the elevator.

[0041] Next, the inspectors used a magnetic array to attach the vertical measurement module to the top of the car and electrically connect it to the main unit via cables. When placing it, it is necessary to ensure that the laser beam is directed along the elevator's running direction and onto the upper shaft wall.

[0042] The horizontal measurement module is connected to the threaded screw of the universal rod through its threaded screw hole, thereby realizing a rigid connection between the horizontal measurement module and the mounting bracket. During operation, a rectangular coordinate axis is established with the direction of the laser emitted by the second laser sensor as the x-axis and the perpendicular to the x-axis as the y-axis. The tilt sensor is set on the upper surface of the second housing and uses the y-axis as the rotation angle measurement axis.

[0043] Then, the operator attaches the connected horizontal measurement module and mounting bracket to a suitable position at the bottom of the car using the magnetic base. By adjusting the direction of the universal joint, the laser emitted by the second laser sensor is made to vertically illuminate the bottom foot guard plate 23 of the car. The host records the distance value at this time as x0. The direction of the universal joint is adjusted again to move the laser emitted by the second laser sensor directly downwards. When the laser avoids illuminating the hoistway wall from the bottom foot guard plate, the locking handwheel is tightened to complete the setting. Assuming that the tilt sensor measures a tilt angle of α and the second laser sensor measures a value of x, the horizontal free distance from the hoistway sidewall to the horizontal measurement module is x*cosα. Further, the distance between the car and the hoistway wall is x*cosα-x0. The horizontal measurement module uploads this data to the host in real time via Bluetooth.

[0044] The host computer performs real-time analysis, display, and storage of the data measured by the vertical and horizontal measurement modules.

[0045] Testers can enter the top of the car and control the car to complete one stroke in the hoistway through the maintenance device to measure the complete distance between the car and the hoistway wall.

[0046] The above description is merely a preferred embodiment of this utility model, used to assist those skilled in the art in implementing the corresponding technical solutions, and is not intended to limit the scope of protection of this utility model. The scope of protection of this utility model is defined by the appended claims. It should be noted that, for those skilled in the art, several equivalent improvements and modifications can be made based on the technical solutions of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Furthermore, it should be understood that although this specification describes the embodiments as described above, 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 of each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A distance measuring instrument between an elevator car and the shaft wall, comprising a main unit (1) and a vertical measuring module (2), the vertical measuring module being disposed on the top surface of the car (3), the vertical measuring module comprising a first housing (4) and a first laser sensor (5) disposed on the first housing, the first laser sensor being connected to the main unit via a cable, characterized in that: The elevator car and shaft wall distance measuring instrument also includes a horizontal measuring module (6). The horizontal measuring module includes a second housing (7), a second laser sensor (8) and an inclination sensor (9) installed on the second housing. The second housing is installed under the car via a mounting bracket (10). The second laser sensor and the inclination sensor are wirelessly connected to the host via a wireless module.

2. The elevator car-sharing distance measuring instrument according to claim 1, characterized in that: The vertical measurement module also includes an acceleration sensor, which is disposed inside the first housing.

3. The elevator car and shaft wall distance measuring instrument according to claim 1, characterized in that: The bottom of the first housing is provided with a magnetic array, which includes several magnetic components. The first housing is attached to the top surface of the car through the magnetic array.

4. The elevator car-sharing distance measuring instrument according to claim 1, characterized in that: The mounting bracket includes a metal connecting rod connected to the top of the car floor, a universal joint connected to the bottom of the metal connecting rod, one end of the universal joint being connected to the metal connecting rod via a universal joint, and the second housing being fixedly installed at the front end of the universal joint.

5. The elevator car and shaft wall distance measuring instrument according to claim 4, characterized in that: The metal connecting rod is equipped with a base at its top end. The base is made of a strong magnetic material and is attached to the bottom surface of the car.

6. The elevator car-sharing distance measuring instrument according to claim 4, characterized in that: The end of the metal connecting rod that connects to the universal joint is also provided with a locking sleeve. The locking sleeve is provided with a locking rod that is threadedly connected to the locking sleeve. The outer end of the locking rod has a locking handwheel.

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