Method for measuring the distance between the measuring device and the internal components of the shaft and the components on the side of the car.

Abstract

This invention discloses a measuring device, including a measuring scale, an elastic element, a mounting shaft, a base, a calculation unit, and an input / output unit. The measuring scale is rotatably fixed on the mounting shaft. The elastic element is connected to the measuring scale and the base, and is used to limit the rotation range of the measuring scale, allowing the measuring scale to return to its initial position when there is no external force. The encoder is mounted on the mounting shaft and is used to measure the angle of rotation of the measuring scale around its central axis. The calculation unit is used to calculate the angle measured by the encoder as the horizontal distance between the end of the measuring scale and the measuring device. The input / output unit is used to receive external signals and output the calculation results of the calculation unit.

Description

Technical Field

[0001] This invention relates to measurement technology, specifically to a measuring device and a method for measuring the distance between internal components of the shaft and components on the car side. Background Technology

[0002] After elevator installation, elevator inspection personnel need to confirm the installation dimensions of many elevator cars and equipment within the elevator shaft during the inspection process. In elevators with many floors, the relevant dimensions for each floor must be measured, which is extremely time-consuming and labor-intensive. For example, the distance between the door lock rollers of the elevator shaft and the car door sill is a mandatory measurement item during elevator inspection. This measurement requires opening the elevator car door. Because the car door is open at a non-level position, the elevator will trigger the Unintended Motion Protection Function (UCMP). If it is necessary to continue measuring other floors, the elevator must be manually reset and then moved to the next measurement location, repeating this process. Therefore, the efficiency of this measurement is extremely low, and the manpower consumption is enormous when there are many floors.

[0003] For example, document CN208150718U provides a device for detecting elevator door ball displacement. This device mounts a camera from a camera detection system onto the door ball drive mechanism to monitor its displacement. However, the camera detection system and related image processing technology introduced in this device significantly increase elevator maintenance costs. Furthermore, environmental factors such as dust and dirt can reduce detection accuracy, potentially leading to poor diagnostic accuracy in later use.

[0004] For example, CN219194098U provides a device for detecting the gap between elevator door cutters, rollers, and sills. It measures the gap using a laser rangefinder and transmits the data to an external device via a wireless signal module. This device integrates components such as a laser rangefinder, wireless module, and magnets, resulting in high detection costs. The magnetic adsorption method may not be suitable for elevators made of some non-ferromagnetic materials, and the device relies on battery power, requiring periodic charging or battery replacement, which significantly limits its operating time. Furthermore, the detection capabilities of this device are relatively limited. Summary of the Invention

[0005] The technical problem to be solved by the present invention is how to provide a measuring device and measuring method that can quickly and conveniently measure the distance between the internal components of the hoistway and the components on the side of the car.

[0006] To solve the above-mentioned technical problems, the present invention provides a measuring device, including a measuring scale, an elastic element, a mounting shaft, a base, a calculation unit, and an input / output unit;

[0007] The measuring scale is rotatably fixed on the mounting shaft; the elastic element is connected to the measuring scale and the base to limit the rotation range of the measuring scale and to return the measuring scale to its initial position when there is no external force; the encoder is mounted on the mounting shaft and is used to measure the angle of rotation of the measuring scale around the central axis; the calculation unit is used to calculate the angle measured by the encoder as the horizontal distance between the end of the measuring scale and the measuring device; the input / output unit is used to receive external signals and output the calculation results of the calculation unit.

[0008] Preferably, the elastic element is a coil spring or a tension spring.

[0009] Preferably, the formula for calculating the horizontal distance between the end of the measuring scale and the measuring device is: L i =R*cos(α i ); where L i R is the horizontal distance between the end of the measuring scale and the measuring device, and R is the distance between the end of the measuring scale and the center of the mounting axis. i This represents the rotation angle of the measuring ruler.

[0010] This invention provides a method for measuring the distance between internal components of the hoistway and components on the car side, comprising the following steps:

[0011] Step S1: Measure the horizontal distance a1 between the first component inside the shaft and the car-side component;

[0012] Step S2: Fix the measuring device to the side of the car and control the car to run in the hoistway so that when the measuring device passes the first component, the measuring scale contacts the first component.

[0013] Step S3: When the measuring ruler contacts the first component, the measuring device measures the horizontal distance L1 between the first component and the measuring device.

[0014] Step S4: Control the car to run in the hoistway so that the measuring device passes through the second component in the hoistway, the measuring scale contacts the second component, and the measuring device measures the horizontal distance L2 between the second component and the measuring device.

[0015] Step S5: The measuring device calculates and outputs the horizontal distance a2 between the second component and the car side component according to a preset formula; the preset formula is: a2=L2-(L1-a1).

[0016] Preferably, during measurement, the mobile device and the measuring device are positioned at the same height, and the mobile device has a height measurement function; the mobile device is used to locate the height position or floor position of the second component in the shaft.

[0017] The present invention also provides a method for measuring the outer contour dimensions of an irregular object, comprising the following steps:

[0018] Step A1: Set the rotation center axis and measuring device for the irregular object; the horizontal distance between the rotation center axis and the measuring device is such that the irregular object can always contact the end of the measuring ruler when it rotates around the rotation center axis.

[0019] Step A2: Measure the horizontal distance between the rotation center axis and the measuring device;

[0020] Step A3: Rotate the irregular object one revolution, and the measuring device calculates and outputs the corresponding dimensions of the outer contour of the irregular object to the rotation center axis. Attached Figure Description

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0022] Figure 1 This is a schematic diagram of the measuring device in Example 1;

[0023] Figure 2 This is another structural schematic diagram of the measuring device in Example 1;

[0024] Figure 3 A schematic diagram illustrating the calculation of the horizontal distance between the end of the measuring scale and the measuring device in Example 1;

[0025] Figure 4 This is a schematic diagram illustrating the measurement of the distance between multiple internal shaft components and elevator car side components in Example 2;

[0026] Figure 5 This is a schematic diagram of measuring the outer contour dimensions of an irregular object in Example 4. Detailed Implementation

[0027] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can fully understand other advantages and technical effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through different specific embodiments, and the details in this specification can also be applied based on different viewpoints, with various modifications or changes made without departing from the overall design concept of the invention. It should be noted that, unless otherwise specified, the following embodiments and features can be combined with each other. The following exemplary embodiments of the present invention can be implemented in many different forms and should not be construed as being limited to the specific embodiments set forth herein. It should be understood that these embodiments are provided to make the disclosure of the present invention thorough and complete, and to fully convey the technical solutions of these exemplary embodiments to those skilled in the art.

[0028] Example 1: As Figure 1 and Figure 2As shown, this embodiment provides a measuring device, including a measuring scale, an elastic element, a mounting shaft, a base, a calculation unit, and an input / output unit;

[0029] The measuring scale is rotatably fixed on the mounting shaft and is a long rod that rotates about the mounting shaft;

[0030] The elastic element is connected to the measuring scale and the base, and is used to limit the rotation range of the measuring scale, allowing it to return to its initial position when no external force is applied. The encoder is mounted on the mounting shaft and is used to measure the angle of rotation of the measuring scale around its central axis. The calculation unit is used to calculate the angle measured by the encoder as the horizontal distance between the end of the measuring scale and the measuring device. The input / output unit is used to receive external signals and output the calculation results from the calculation unit. The mounting shaft is mounted on the base. The encoder can be one of a photoelectric encoder, an inductive encoder, a rotary encoder, or a magnetic encoder.

[0031] The elastic element is a coil spring or a tension spring. Figure 1 Example of a measuring device for coil springs. Figure 2 Example of a measuring device for a tension spring.

[0032] like Figure 3 As shown, the formula for calculating the horizontal distance between the end of the measuring scale and the measuring device is: L i = R*cos(α i ); where L i R is the horizontal distance between the end of the measuring scale and the measuring device, and R is the distance between the end of the measuring scale and the center of the mounting axis. i This represents the rotation angle of the measuring ruler.

[0033] Example 2: This example provides a method for measuring the distance between internal components of the hoistway and components on the car side, including the following steps:

[0034] Step S1: Measure the horizontal distance a1 between the first component in the shaft and the car-side component; this step can be done using traditional manual measurement methods.

[0035] Step S2: Fix the measuring device to the side of the car, point the measuring scale to the part to be measured in the hoistway, and control the car to run in the hoistway so that when the measuring device passes the first part, the measuring scale contacts the first part; the measuring device is the measuring device described in Example 1.

[0036] Step S3: When the measuring ruler contacts the first component, the measuring device measures the horizontal distance L1 between the first component and the measuring device.

[0037] Step S4: Control the car to run in the hoistway so that the measuring device passes through the second component in the hoistway, the measuring scale contacts the second component, and the measuring device measures the horizontal distance L2 between the second component and the measuring device.

[0038] Step S5: The measuring device calculates and outputs the horizontal distance a2 between the second component and the car side component according to a preset formula; the preset formula is: a2=L2-(L1-a1).

[0039] And so on, such as Figure 4 As shown, during elevator car operation, the distance between multiple shaft internal components and elevator car side components can be quickly measured, i.e., an=Ln-(L1-a1).

[0040] In practical applications, the required gap between the elevator landing door lock roller and the elevator car sill is 7-9mm. This dimension must be retested during elevator acceptance testing. However, measuring this dimension is very difficult. It requires manually moving the elevator car to the corresponding position and opening the elevator car door for measurement. Since the elevator car is not level with the floor, the elevator car's accidental movement protection function will be triggered. If the elevator wants to continue running, the protection function must be manually unlocked. Therefore, this operation requires multiple people to work together and is very cumbersome. When measuring the gap between the landing door lock roller and the elevator car sill for the next floor, the above actions need to be repeated multiple times. The more floors the elevator has, the longer it takes.

[0041] Using the measuring device of the present invention, only one operation is required according to the method of this embodiment to measure the spacing a1 of a certain floor. Then, the L1 of that floor is measured using this device. All subsequent floors can be automatically calculated during elevator operation, which greatly improves the measurement efficiency.

[0042] Example 3: Based on Example 2, this example utilizes a mobile device to interact with the measuring device. The measuring device is configured via the mobile device, and the measured data can be displayed on the mobile device. The mobile device can also share the measurement data or upload it to a cloud database.

[0043] During measurement, the mobile device and the measuring device are positioned at the same height, and the mobile device has a height measurement function; the mobile device is used to locate the height position or floor position of the second component in the shaft.

[0044] This function can pinpoint the floor location of the measured data and directly locate the measured component within the shaft. The height measurement method for mobile devices is one or more combinations of the following: accelerometer, barometer, laser rangefinder, and magnetic scale.

[0045] Example 4: The measuring device in Example 1 can be used to measure the outer contour dimensions of irregular objects.

[0046] like Figure 5As shown, this embodiment provides a method for measuring the outer contour dimensions of an irregular object, including the following steps:

[0047] Step A1: Set the rotation center axis and measuring device for the irregular object; the horizontal distance between the rotation center axis and the measuring device is such that the irregular object can always contact the end of the measuring ruler when it rotates around the rotation center axis.

[0048] Step A2: Measure the horizontal distance between the rotation center axis and the measuring device;

[0049] Step A3: Rotate the irregular object one revolution, and the measuring device calculates and outputs the corresponding dimensions of the outer contour of the irregular object to the rotation center axis.

[0050] The present invention has been described in detail above through specific embodiments and examples, but these are not intended to limit the invention. Many modifications and improvements can be made by those skilled in the art without departing from the principles of the invention, and these should also be considered within the scope of protection of the present invention.

Claims

1. A measuring device, characterized in that, It includes a measuring scale, elastic element, mounting shaft, base, calculation unit, and input / output unit; The measuring scale is rotatably fixed on the mounting shaft; the elastic element is connected to the measuring scale and the base to limit the rotation range of the measuring scale and to return the measuring scale to its initial position when there is no external force; the encoder is mounted on the mounting shaft to measure the angle of rotation of the measuring scale around the central axis; the calculation unit is used to calculate the angle measured by the encoder as the horizontal distance between the end of the measuring scale and the measuring device; the input / output unit is used to receive external signals and output the calculation results of the calculation unit.

2. The measuring device according to claim 1, characterized in that, The elastic element is a coil spring or a tension spring.

3. The measuring device according to claim 1, characterized in that, The formula for calculating the horizontal distance between the end of the measuring scale and the measuring device is: L i =R*cos(α i ); where L i R is the horizontal distance between the end of the measuring scale and the measuring device, and R is the distance between the end of the measuring scale and the center of the mounting axis. i This represents the rotation angle of the measuring ruler.

4. A method for measuring the distance between internal components of the hoistway and components on the car side, characterized in that, The following steps are involved: Step S1: Measure the horizontal distance a1 between the first component inside the shaft and the car-side component; Step S2: Fix the measuring device to the side of the car and control the car to run in the hoistway so that when the measuring device passes the first component, the measuring scale contacts the first component; the measuring device is the measuring device according to any one of claims 1 to 3; Step S3: When the measuring ruler contacts the first component, the measuring device measures the horizontal distance L1 between the first component and the measuring device. Step S4: Control the car to run in the hoistway so that the measuring device passes through the second component in the hoistway, the measuring scale contacts the second component, and the measuring device measures the horizontal distance L2 between the second component and the measuring device. Step S5: The measuring device calculates and outputs the horizontal distance a2 between the second component and the car side component according to a preset formula; the preset formula is: a2=L2-(L1-a1).

5. The method for measuring the distance between internal components of the shaft and components on the car side according to claim 4, characterized in that, During measurement, the mobile device and the measuring device are set at the same height, and the mobile device has a height measurement function; the mobile device is used to locate the height position or floor position of the second component in the shaft.

6. A method for measuring the outer contour dimensions of an irregular object, characterized in that, The following steps are involved: Step A1: Set the rotation center axis of the irregular object and the measuring device; the horizontal distance between the rotation center axis and the measuring device is such that when the irregular object rotates around the rotation center axis, the irregular object can always contact the end of the measuring ruler; the measuring device is the measuring device according to any one of claims 1 to 3; Step A2: Measure the horizontal distance between the rotation center axis and the measuring device; Step A3: Rotate the irregular object one revolution, and the measuring device calculates and outputs the corresponding dimensions of the outer contour of the irregular object to the rotation center axis.

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