Measuring device and method for measuring distance between hoistway internal part and lift car side part

Abstract

The invention discloses a measuring device which comprises a measuring ruler, an elastic piece, a mounting shaft, a base, a calculation unit and an input and output unit. The measuring tape is rotatably fixed on the mounting shaft; the elastic piece is connected with the measuring tape and the base and is used for limiting the rotation range of the measuring tape and enabling the measuring tape to return to the initial position when no external force exists; the encoder is mounted on the mounting shaft and is used for measuring the rotating angle of the measuring tape around the central shaft; the calculation unit is used for calculating the angle measured by the encoder as the horizontal distance between the end part of the measuring tape and the measuring device; and the input and output unit is used for receiving an external signal and outputting a calculation result of the calculation unit.

Description

Technical Field

[0001] The invention relates to measurement technology, and in particular to a measuring device and a method for measuring the distance between a hoistway inner component and a car side component. Background Art

[0002] After the elevator is installed, the elevator acceptance personnel need to confirm the installation dimensions of many elevator cars and equipment in the elevator shaft during the acceptance process. In elevators with many floors, the relevant dimensions of each floor must be measured, which is very time-consuming and labor-intensive. For example, during the elevator acceptance process, the distance between the door lock roller of the inner door of the elevator shaft and the door sill of the car is a must-measure item. During the measurement process, the elevator car door needs to be opened for measurement. Since the position where the door is opened is not in the level position of the elevator car, the elevator will trigger the car accidental movement protection function (UCMP). If you need to continue measuring other floors, you need to manually reset it, and then run the elevator to the next position to be measured, and repeat this process. Therefore, the measurement efficiency of this dimension is extremely low. When there are many floors, the consumption of manpower is huge.

[0003] For example, document CN208150718U provides a device for detecting the displacement of an elevator door ball, in which a camera device of a camera detection system is installed on a door blade connected to the door ball transmission to monitor the displacement of the door ball. However, the camera detection system and related image processing technology introduced by the device will greatly increase the cost of elevator maintenance, and the influence of environmental factors such as dust and dirt will reduce the accuracy of detection. In later use, the diagnostic accuracy of the device may be poor.

[0004] For example, CN219194098U provides a device for detecting the gap between the elevator door blade, roller and sill. The gap between the door blade, roller and sill is measured by a laser rangefinder, and the data is transmitted to an external device through a wireless signal module. The device integrates components such as a laser rangefinder, a wireless module and a magnet, resulting in a high detection cost. The magnet adsorption method may not be applicable to elevators made of certain non-ferromagnetic materials, and the device also relies on battery power and needs to be charged or replaced regularly, which greatly limits the use time. In addition, the content detected by the device is also 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 a measuring method, which can quickly and conveniently measure the distance between the inner components of the hoistway and the side components of the car.

[0006] In order to solve the above technical problems, the present invention provides a measuring device, including a measuring ruler, an elastic member, a mounting shaft, a base, a computing unit and an input-output unit;

[0007] The ruler is rotatably fixed on the mounting shaft; the elastic member is connected to the ruler and the base, and is used to limit the rotation range of the ruler, and can return the ruler to an initial position when there is no external force; the encoder is installed on the mounting shaft, and is used to measure the angle of rotation of the ruler 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 ruler and the measuring device; the input and output unit is used to receive external signals and output the calculation results of the calculation unit.

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

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

[0010] The present invention provides a method for measuring the distance between a hoistway inner component and a car side component, comprising the following steps:

[0011] Step S1, measuring a horizontal distance a1 between a first component in the hoistway and a car side component;

[0012] Step S2, fixing the measuring device on the side of the car, and controlling the car to run in the hoistway, so that when the measuring device passes through the first component, the measuring ruler contacts the first component; the measuring device is the measuring device according to any one of claims 1 to 3;

[0013] Step S3, when the measuring ruler contacts the first component, the measuring device measures a horizontal distance L1 between the first component and the measuring device;

[0014] Step S4, controlling the car to run in the hoistway so that the measuring device passes through the second component in the hoistway, the measuring ruler 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, a mobile device is arranged at the same height as the measuring device, and the mobile device has a height measurement function; and the height position or floor position of the second component in the hoistway is located by using the mobile device.

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

[0018] Step A1, setting a rotation center axis of the irregular object and a 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;

[0019] Step A2, measuring the horizontal distance from the rotation center axis to the measuring device;

[0020] Step A3, rotating the irregular object for one circle, and the measuring device calculates and outputs the corresponding size of the outer contour of the irregular object to the rotation center axis. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0022] Figure 1 A schematic diagram of the structure of the measuring device of Example 1;

[0023] Figure 2 Another structural schematic diagram of the measuring device of Example 1;

[0024] Figure 3 A schematic diagram of calculating the horizontal distance between the end of the measuring ruler and the measuring device of Example 1;

[0025] Figure 4 This is a schematic diagram of measuring the distance between multiple hoistway internal 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 DESCRIPTION

[0027] The following describes the implementation methods of the present invention through specific specific embodiments, and those skilled in the art can fully understand other advantages and technical effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through different specific implementation methods, and the details in this specification can also be applied based on different viewpoints, and various modifications or changes can be made without deviating from the overall design concept of the invention. It should be noted that the following embodiments and the features in the embodiments can be combined with each other in the absence of conflict. The following exemplary embodiments of the present invention can be implemented in a variety of different forms and should not be interpreted as being limited to the specific embodiments described 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 specific embodiments to those skilled in the art.

[0028] Example 1

[0029] like Figure 1 and Figure 2 As shown, this embodiment provides a measuring device, including a measuring ruler, an elastic member, a mounting shaft, a base, a computing unit, and an input-output unit;

[0030] The measuring ruler is rotatably fixed on the mounting shaft and is a long rod that rotates around the mounting shaft;

[0031] The elastic member is connected to the ruler and the base, and is used to limit the rotation range of the ruler, and can return the ruler to the initial position when there is no external force; the encoder is installed on the mounting shaft, and is used to measure the angle of rotation of the ruler 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 ruler and the measuring device; the input and output unit is used to receive external signals and output the calculation results of the calculation unit. The mounting shaft is installed on the base. The encoder can be one of a photoelectric encoder, an inductive encoder, a rotary encoder, and a magnetic encoder.

[0032] The elastic member is a coil spring or a tension spring. Figure 1 An example of a measuring device for a coil spring is shown below. Figure 2 An example of a measuring device for a tension spring.

[0033] like Figure 3 As shown in the figure, the formula for calculating the horizontal distance between the end of the measuring ruler and the measuring device is: L i =R*cos(α i );where L i is the horizontal distance between the end of the ruler and the measuring device, R is the distance between the end of the ruler and the center of the mounting axis, α i is the rotation angle of the ruler.

[0034] Example 2

[0035] This embodiment provides a method for measuring the distance between a hoistway inner component and a car side component, comprising the following steps:

[0036] Step S1, measuring the horizontal distance a1 between the first component in the hoistway and the car side component; this step can adopt the traditional manual measurement method.

[0037] Step S2, fixing the measuring device on the side of the car, with the measuring ruler pointing to the component to be measured in the hoistway, and controlling the car to run in the hoistway so that when the measuring device passes the first component, the measuring ruler contacts the first component; the measuring device is the measuring device described in Example 1;

[0038] Step S3, when the measuring ruler contacts the first component, the measuring device measures a horizontal distance L1 between the first component and the measuring device;

[0039] Step S4, controlling the car to run in the hoistway so that the measuring device passes through the second component in the hoistway, the measuring ruler contacts the second component, and the measuring device measures the horizontal distance L2 between the second component and the measuring device;

[0040] 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).

[0041] And so on, such as Figure 4 As shown, during the operation of the elevator car, the distances between multiple hoistway internal components and elevator car side components can be quickly measured, that is, an=Ln-(L1-a1).

[0042] In actual applications, the gap between the elevator floor door lock roller and the elevator car sill is required to be between 7 and 9 mm. This dimension must be retested during the elevator acceptance process, but the measurement of this dimension is very difficult. The elevator car needs to be manually moved to the corresponding position, and the elevator car door needs to be opened for measurement. Since the elevator car is in a non-level position, the elevator car accidental movement protection function will be triggered. If the elevator continues to run, the protection function must be manually unlocked. Therefore, this operation requires the cooperation of multiple people and is very cumbersome. When measuring the gap between the floor door lock roller and the elevator car sill of the next floor, the above actions need to be repeated many times. The more floors there are, the longer it takes.

[0043] By using the measuring device of the present invention, it is only necessary to perform the operation according to the method of this embodiment more than once to measure the spacing a1 of a certain floor, and then use this device to measure L1 of the floor. Ai can be automatically calculated for all subsequent floors during the operation of the elevator, which greatly improves the measurement efficiency.

[0044] Example 3

[0045] Based on Example 2, this embodiment uses a mobile device to interact with a measuring device for data. The measuring device is set through the mobile device, and the implementation data measured by the measuring device can also be displayed on the mobile device. The mobile device can also share or upload the measurement data to a cloud database.

[0046] During measurement, a mobile device is arranged at the same height as the measuring device, and the mobile device has a height measurement function; and the height position or floor position of the second component in the hoistway is located by using the mobile device.

[0047] This function can be used to locate the floor where the measurement data is located, and directly locate the measured component in the shaft. The height measurement method of the mobile device is one or more combinations of the following: acceleration sensor, air pressure sensor, laser ranging, and magnetic ruler.

[0048] Example 4

[0049] The measuring device in Example 1 can be used to measure the outer contour dimensions of irregular objects.

[0050] like Figure 5 As shown, this embodiment provides a method for measuring the outer contour size of an irregular object, comprising the following steps:

[0051] Step A1, setting a rotation center axis of the irregular object and a 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;

[0052] Step A2, measuring the horizontal distance from the rotation center axis to the measuring device;

[0053] Step A3, rotating the irregular object for one circle, and the measuring device calculates and outputs the corresponding size of the outer contour of the irregular object to the rotation center axis.

[0054] The present invention has been described in detail above through specific implementation modes and embodiments, but these do not constitute limitations of the present invention. Without departing from the principles of the present invention, those skilled in the art may also make many variations and improvements, which should also be regarded as the protection scope of the present invention.

Claims

1. A measuring device, characterized in that: It includes a measuring ruler, an elastic member, a mounting shaft, a base, a computing unit and an input-output unit; The ruler is rotatably fixed on the mounting shaft; the elastic member is connected to the ruler and the base, and is used to limit the rotation range of the ruler, and can return the ruler to an initial position when there is no external force; the encoder is installed on the mounting shaft, and is used to measure the angle of rotation of the ruler 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 ruler and the measuring device; the input and 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 member 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 ruler and the measuring device is: L i =R*cos(α i );where L i is the horizontal distance between the end of the ruler and the measuring device, R is the distance between the end of the ruler and the center of the mounting axis, α i is the rotation angle of the ruler.

4. A method for measuring the distance between a hoistway inner component and a car side component, characterized in that: The following steps are involved: Step S1, measuring a horizontal distance a1 between a first component in the hoistway and a car side component; Step S2, fixing the measuring device on the side of the car, and controlling the car to run in the hoistway, so that when the measuring device passes through the first component, the measuring ruler 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 a horizontal distance L1 between the first component and the measuring device; Step S4, controlling the car to run in the hoistway so that the measuring device passes through the second component in the hoistway, the measuring ruler 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 the hoistway inner component and the car side component according to claim 4, characterized in that: During measurement, a mobile device is set at the same height as the measuring device, and the mobile device has a height measurement function; the height position or floor position of the second component in the hoistway is located by using the mobile device.

6. A method for measuring the outer contour size of an irregular object, characterized in that: The following steps are involved: Step A1, setting a rotation center axis of the irregular object and a 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, measuring the horizontal distance from the rotation center axis to the measuring device; Step A3, rotating the irregular object for one circle, and the measuring device calculates and outputs the corresponding size of the outer contour of the irregular object to the rotation center axis.

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