Device and method for measuring installation size of elevator

Abstract

The invention discloses a device for measuring the installation size of an elevator. The device comprises a measurement upper limit cantilever, a measurement upper limit rubber strip, a measurement lower limit cantilever, a measurement lower limit rubber strip, a fixed plate, a measurement unit and a fixed bottom plate, one end of the measurement upper limit cantilever and one end of the measurement lower limit cantilever are connected with the fixed plate, the other end of the measurement upper limit cantilever is connected with the measurement upper limit rubber strip, and the other end of the measurement lower limit cantilever is connected with the measurement lower limit rubber strip; the upper limit measuring rubber strip and the lower limit measuring rubber strip are located on the same side of the fixing plate. The fixed plate is connected with the fixed bottom plate, and the measuring device is installed on the side of an elevator car through the fixed bottom plate. The measuring unit is provided with an acceleration sensor; the measuring unit is connected with the fixing plate, and is used for measuring vibration signals from the upper limit cantilever and the lower limit cantilever and obtaining position information of the elevator car; the natural vibration frequencies of the measurement upper limit cantilever and the measurement lower limit cantilever are different. According to the invention, the installation size between the elevator car and the equipment in the elevator shaft can be rapidly measured in the elevator operation process, compliance judgment of automatic measurement is realized, the measurement efficiency is greatly improved, and a specific position can be given to guide subsequent finishing.

Description

Technical Field

[0001] The present invention relates to the technical field of elevators, and in particular to a device and method for measuring installation dimensions of an elevator. 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] Chinese patent document CN202220679533.7 discloses a device that uses a conductive sheet and an alarm system to quickly detect the gap between the elevator floor door lock roller and the car sill. When the gap is small, the conductive sheet of the device contacts the floor door lock roller, the circuit is connected, and the alarm system works. However, the device has great limitations, specifically: 1. The spacing between the floor door lock roller and the car sill in the elevator shaft is required to be Amm~Bmm. The device can only determine whether the gap meets the lower limit requirement, but cannot guarantee that the gap also meets the upper limit requirement; 2. There is no clear positioning method, and it can only be manually determined at the inspection speed through the sound and light alarm to determine which floor's gap does not meet the standard.

[0004] Chinese patent document CN202322150820.6 discloses a tool that uses laser to quickly detect the horizontal distance between the elevator floor door lock roller and the car door sill. During the operation of the elevator, the floor door waveform is obtained by laser reflection, and then the horizontal distance between the door lock roller and the laser transmitter (car door sill) is obtained. However, the limitations of this tool are: 1. Accuracy issues: The measurement is easily affected by external factors, such as dust, smoke, and reflective material properties; 2. Cost issues: The equipment purchase and maintenance costs are high, and it only solves a single problem, which is not the best choice for the on-site maintenance team; 3. Portability issues: The laser equipment relies on power supply, and the elevator car top power supply may not have an empty socket;

[0005] Chinese patent document CN202010384323.0 discloses an automatic distance measuring device and its distance measuring method. During the operation of the elevator, the distance from the door lock roller to the car sill meets the requirements by checking whether the touch tongue emits a prompt sound. However, the limitation of this method is that there is no clear positioning method, and it can only be judged and recorded manually by the prompt sound whether the floor gap meets the standard.

[0006] The above public documents cannot automatically record the relationship between the measured data and the floor, and require manual participation of relevant personnel. When the elevator runs at high speed, the inspection personnel will have certain risks. Summary of the invention

[0007] The technical problem to be solved by the present invention is to provide a technical solution for quickly measuring the installation dimensions between an elevator car and equipment in an elevator shaft during elevator operation.

[0008] In order to solve the above technical problems, the present invention provides a device for measuring the installation dimensions of an elevator, comprising a measuring upper limit cantilever, a measuring upper limit rubber strip, a measuring lower limit cantilever, a measuring lower limit rubber strip, a fixing plate, a measuring unit and a fixing bottom plate;

[0009] One end of the upper limit measurement cantilever and the lower limit measurement cantilever is connected to the fixed plate, the other end of the upper limit measurement cantilever is connected to the upper limit measurement rubber strip, and the other end of the lower limit measurement cantilever is connected to the lower limit measurement rubber strip; the upper limit measurement rubber strip and the lower limit measurement rubber strip are located on the same side of the fixed plate;

[0010] The fixing plate is connected to the fixing bottom plate, and the measuring device is installed on the elevator car side through the fixing bottom plate;

[0011] The measuring unit has an acceleration sensor; the measuring unit is connected to the fixing plate, measures vibration signals from the upper limit cantilever and the lower limit cantilever, and obtains the position information of the elevator car;

[0012] The natural vibration frequencies of the upper limit measurement cantilever and the lower limit measurement cantilever are different.

[0013] Preferably, the natural vibration frequency of the upper measurement limit cantilever is lower than the natural vibration frequency of the lower measurement limit cantilever.

[0014] Preferably, with the fixed plate as a reference, the extension amount of the measuring upper limit rubber strip is greater than the extension amount of the measuring lower limit rubber strip.

[0015] Preferably, with the fixed plate as a reference, the extension amounts of the upper measurement limit rubber strip and the lower measurement limit rubber strip are adjustable.

[0016] Preferably, the measuring unit has an input and output interface, and can exchange data with an external mobile device.

[0017] The present invention also provides a method for measuring the installation dimensions of an elevator, comprising the following steps:

[0018] Step S1, installing a measuring device on the elevator car side so that the measuring upper limit rubber strip and the measuring lower limit rubber strip of the measuring device point to the reference measured component in the hoistway; the measuring device is the aforementioned measuring device for the installation dimensions of the elevator;

[0019] Step S2, adjusting the extension amount of the upper limit rubber strip and the lower limit rubber strip of the measurement, so that the extension amount of the upper limit rubber strip of the measurement matches the upper limit dimension of the preset spacing between the measured component in the hoistway and the elevator car side component, and the extension amount of the lower limit rubber strip of the measurement matches the lower limit dimension of the preset spacing between the measured component in the hoistway and the elevator car side component;

[0020] Step S3, control the elevator car to run in the hoistway, identify whether the upper limit rubber strip or the lower limit rubber strip is hit by the frequency characteristics of the vibration signal measured by the measuring unit, and then judge whether the actual distance between the measured component in the hoistway and the elevator car side component meets the preset distance requirements, as well as the position information of the measured component in the hoistway.

[0021] Preferably, in step S2, the method for adjusting the extension amount of the upper limit rubber strip and the lower limit rubber strip is:

[0022] Step S21, setting the reference component in the hoistway so that the distance between the reference component in the hoistway and the elevator car side component meets the preset distance range, and measuring and recording the distance a1 between the reference component in the hoistway and the elevator car side component;

[0023] Step S22, adjust the extension amount of the upper limit measuring rubber strip so that the overlap amount between the outermost end of the upper limit measuring rubber strip and the reference component in the well is Lu-a1, where Lu is the upper limit size of the preset spacing; adjust the extension amount of the lower limit measuring rubber strip so that the spacing between the outermost end of the lower limit measuring rubber strip and the reference component in the well is a1-Ld, where Ld is the lower limit size of the preset spacing.

[0024] Preferably, in step S3, at the reference measured component in the hoistway, if the upper limit rubber strip of measurement is hit and the lower limit rubber strip of measurement is not hit, it is judged that the actual distance between the measured component in the hoistway and the elevator car side component meets the preset distance requirement; if the upper limit rubber strip of measurement is hit and the lower limit rubber strip of measurement is also hit, it is judged that the actual distance between the measured component in the hoistway and the elevator car side component is less than the preset distance requirement; if the upper limit rubber strip of measurement is not hit and the lower limit rubber strip of measurement is not hit, it is judged that the actual distance between the measured component in the hoistway and the elevator car side component is greater than the preset distance requirement; if the upper limit rubber strip of measurement is not hit and the lower limit rubber strip of measurement is also not hit, it is judged that the measuring device has a fault.

[0025] Preferably, the measuring method further comprises step S4, sending the judgment result of whether the actual distance between the measured component in the hoistway and the elevator car side component in step S3 meets the preset distance requirement and the position information of the measured component in the hoistway to the mobile device.

[0026] Compared with the prior art, the present invention can quickly measure the installation dimensions between the elevator car and the equipment in the elevator shaft during the operation of the elevator, realize automatic measurement compliance judgment, greatly improve the measurement efficiency, and give specific positions to guide subsequent repairs. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0028] Figure 1 A side view of a device for measuring the installation dimensions of an elevator according to Embodiment 1;

[0029] Figure 2 This is a top view of the device for measuring the installation dimensions of the elevator of Example 1. DETAILED DESCRIPTION

[0030] 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.

[0031] Example 1

[0032] like Figure 1 and Figure 2 As shown, this embodiment provides a device for measuring the installation dimensions of an elevator, including an upper limit measuring cantilever, an upper limit measuring rubber strip, a lower limit measuring cantilever, a lower limit measuring rubber strip, a fixing plate, a measuring unit and a fixing bottom plate;

[0033] One end of the upper limit measurement cantilever and the lower limit measurement cantilever is connected to the fixed plate, the other end of the upper limit measurement cantilever is connected to the upper limit measurement rubber strip, and the other end of the lower limit measurement cantilever is connected to the lower limit measurement rubber strip; the upper limit measurement rubber strip and the lower limit measurement rubber strip are located on the same side of the fixed plate; the number of the upper limit measurement rubber strip and the lower limit measurement rubber strip and the relative position in space are set accordingly according to different measured components. In this embodiment, the number of the upper limit measurement rubber strip and the lower limit measurement rubber strip is one each, the upper limit measurement rubber strip and the lower limit measurement rubber strip overlap in the vertical direction, the upper and lower positions of the upper limit measurement rubber strip and the lower limit measurement rubber strip are not limited, and the upper limit measurement rubber strip can be set above the lower limit measurement rubber strip or below the lower limit measurement rubber strip.

[0034] The fixing plate is connected to the fixing bottom plate, and the measuring device is installed on the elevator car side through the fixing bottom plate; the measuring unit has an acceleration sensor; the measuring unit is connected to the fixing plate, measures the vibration signal from the upper limit cantilever and the lower limit cantilever, and obtains the position information of the elevator car. The position information of the elevator car is obtained by acceleration integration calculation.

[0035] The natural vibration frequencies of the upper limit cantilever and the lower limit cantilever are different. For example, the upper limit cantilever is thinner and has a lower natural vibration frequency; the lower limit cantilever is shorter and thicker and has a higher natural vibration frequency. The measuring unit can determine whether the upper limit rubber strip or the lower limit rubber strip has collided based on the impact vibration frequency.

[0036] Preferably, the extension amount of the measuring upper limit rubber strip is greater than the extension amount of the measuring lower limit rubber strip. The extension amounts of the measuring upper limit rubber strip and the measuring lower limit rubber strip are adjustable. The measuring unit has an input and output interface and can exchange data with an external mobile device. The measuring device can be set through a mobile device, and the real-time 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.

[0037] When the elevator car is running in the hoistway, the upper limit rubber strip or the lower limit rubber strip collides with the measured component in the hoistway. This collision will transmit the vibration to the upper limit cantilever or the lower limit cantilever of the measurement until the measurement unit fixing plate, and the vibration signal is finally captured by the measurement unit. According to the impact characteristics and frequency characteristics of the vibration signal, it is obtained whether the installation position range of the measured component in the hoistway meets the installation requirements, and the specific position of the measured component in the hoistway can be known according to the calculated car position information.

[0038] Example 2

[0039] This embodiment discloses a method for measuring the installation dimensions of an elevator, comprising the following steps:

[0040] Step S1, installing a measuring device on the side of the elevator car so that the upper limit rubber strip and the lower limit rubber strip of the measuring device point to the reference measured component in the hoistway; the measuring device is the measuring device for the elevator installation dimensions described in Example 1;

[0041] Step S2, adjusting the extension amount of the upper limit rubber strip and the lower limit rubber strip of the measurement, so that the extension amount of the upper limit rubber strip of the measurement matches the upper limit dimension of the preset spacing between the measured component in the hoistway and the elevator car side component, and the extension amount of the lower limit rubber strip of the measurement matches the lower limit dimension of the preset spacing between the measured component in the hoistway and the elevator car side component;

[0042] Step S3, control the elevator car to run in the hoistway, identify whether the upper limit rubber strip or the lower limit rubber strip is hit by the frequency characteristics of the vibration signal measured by the measuring unit, and then judge whether the actual distance between the measured component in the hoistway and the elevator car side component meets the preset distance requirements, as well as the position information of the measured component in the hoistway.

[0043] Step S4, sending the determination result of whether the actual distance between the measured component in the hoistway and the elevator car side component meets the preset distance requirement in step S3 and the position information of the measured component in the hoistway to the mobile device.

[0044] In step S2, the method for adjusting the extension amount of the upper limit rubber strip and the lower limit rubber strip is:

[0045] Step S21, setting the reference component in the hoistway so that the distance between the reference component in the hoistway and the elevator car side component meets the preset distance range, and measuring and recording the distance a1 between the reference component in the hoistway and the elevator car side component;

[0046] Step S22, adjust the extension amount of the upper limit measuring rubber strip so that the overlap amount between the outermost end of the upper limit measuring rubber strip and the reference component in the well is Lu-a1, where Lu is the upper limit size of the preset spacing; adjust the extension amount of the lower limit measuring rubber strip so that the spacing between the outermost end of the lower limit measuring rubber strip and the reference component in the well is a1-Ld, where Ld is the lower limit size of the preset spacing.

[0047] In the step S3, at the reference measured component in the hoistway, if the upper limit rubber strip of measurement is hit and the lower limit rubber strip of measurement is not hit, it is judged that the actual distance between the measured component in the hoistway and the elevator car side component meets the preset distance requirement; if the upper limit rubber strip of measurement is hit and the lower limit rubber strip of measurement is also hit, it is judged that the actual distance between the measured component in the hoistway and the elevator car side component is less than the preset distance requirement; if the upper limit rubber strip of measurement is not hit and the lower limit rubber strip of measurement is not hit, it is judged that the actual distance between the measured component in the hoistway and the elevator car side component is greater than the preset distance requirement; if the upper limit rubber strip of measurement is not hit and the lower limit rubber strip of measurement is hit, it is judged that the measuring device has a fault.

[0048] A specific example is that the gap between the elevator floor door lock roller and the elevator car sill is required to be between 7 and 9 mm (i.e.: Ld = 7mm, Lu = 9mm). 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 not in a level position, the elevator car accidental movement protection function will be triggered. If the elevator is to continue to run, the protection function must be manually unlocked. This operation is not only very cumbersome, but also requires the collaboration of multiple people. The above steps need to be repeated for the gap between the floor door lock roller and the elevator car sill on each floor. The more floors there are, the longer it takes.

[0049] Using the measurement method of this embodiment, only one or more operations are required to measure the spacing a1 of a certain layer, and then move the car to the vicinity of the components in the shaft, and set the upper limit protruding distance of the measuring rubber strip to Lu-a1=9-a1; the lower limit recessed distance of the measuring rubber strip is a1-7=a1-7.

[0050] When the elevator car is running in the hoistway, it can be determined according to step S3 whether the gap between the door lock rollers of each floor of the elevator and the elevator car sill meets the requirement of 7 to 9 mm, which greatly improves the measurement efficiency.

[0051] The position information of the door lock rollers of each floor of the elevator can be directly calculated and obtained through the acceleration sensor used as the measurement unit.

[0052] 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 device for measuring the installation dimensions of an elevator. It is characterized in that It includes a measuring upper limit cantilever, a measuring upper limit rubber strip, a measuring lower limit cantilever, a measuring lower limit rubber strip, a fixing plate, a measuring unit and a fixing bottom plate; One end of the upper limit measurement cantilever and the lower limit measurement cantilever is connected to the fixed plate, the other end of the upper limit measurement cantilever is connected to the upper limit measurement rubber strip, and the other end of the lower limit measurement cantilever is connected to the lower limit measurement rubber strip; the upper limit measurement rubber strip and the lower limit measurement rubber strip are located on the same side of the fixed plate; The fixing plate is connected to the fixing bottom plate, and the measuring device is installed on the elevator car side through the fixing bottom plate; The measuring unit has an acceleration sensor; the measuring unit is connected to the fixing plate, measures vibration signals from the upper limit cantilever and the lower limit cantilever, and obtains the position information of the elevator car; The natural vibration frequencies of the upper limit measurement cantilever and the lower limit measurement cantilever are different.

2. The measuring device for elevator installation dimensions according to claim 1, It is characterized in that The natural vibration frequency of the upper measurement limit cantilever is lower than the natural vibration frequency of the lower measurement limit cantilever.

3. The measuring device for elevator installation dimensions according to claim 1, It is characterized in that With the fixed plate as a reference, the extension amount of the measuring upper limit rubber strip is greater than the extension amount of the measuring lower limit rubber strip.

4. The device for measuring the installation dimensions of an elevator according to claim 1, It is characterized in that With the fixed plate as a reference, the extension amounts of the measuring upper limit rubber strip and the measuring lower limit rubber strip can be adjusted.

5. The measuring device for elevator installation dimensions according to claim 1, It is characterized in that The measuring unit has an input and output interface and can exchange data with an external mobile device.

6. A method for measuring the installation dimensions of an elevator. It is characterized in that The following steps are involved: Step S1, installing a measuring device on the elevator car side so that the upper limit rubber strip and the lower limit rubber strip of the measuring device point to the reference measured component in the hoistway; the measuring device is a measuring device for elevator installation dimensions according to any one of claims 1 to 6; Step S2, adjusting the extension amount of the upper limit rubber strip and the lower limit rubber strip of the measurement, so that the extension amount of the upper limit rubber strip of the measurement matches the upper limit dimension of the preset spacing between the measured component in the hoistway and the elevator car side component, and the extension amount of the lower limit rubber strip of the measurement matches the lower limit dimension of the preset spacing between the measured component in the hoistway and the elevator car side component; Step S3, control the elevator car to run in the hoistway, identify whether the upper limit rubber strip or the lower limit rubber strip is hit by the frequency characteristics of the vibration signal measured by the measuring unit, and then judge whether the actual distance between the measured component in the hoistway and the elevator car side component meets the preset distance requirements, as well as the position information of the measured component in the hoistway.

7. The method for measuring the installation dimensions of an elevator according to claim 6, It is characterized in that In step S2, the method for adjusting the extension amount of the upper limit rubber strip and the lower limit rubber strip is: Step S21, setting the reference component in the hoistway so that the distance between the reference component in the hoistway and the elevator car side component meets the preset distance range, and measuring and recording the distance a1 between the reference component in the hoistway and the elevator car side component; Step S22, adjust the extension amount of the upper limit measuring rubber strip so that the overlap amount between the outermost end of the upper limit measuring rubber strip and the reference component in the well is Lu-a1, where Lu is the upper limit size of the preset spacing; adjust the extension amount of the lower limit measuring rubber strip so that the spacing between the outermost end of the lower limit measuring rubber strip and the reference component in the well is a1-Ld, where Ld is the lower limit size of the preset spacing.

8. The method for measuring the installation dimensions of an elevator according to claim 6, It is characterized in that In the step S3, at the reference measured component in the hoistway, if the upper limit rubber strip is hit and the lower limit rubber strip is not hit, it is determined that the actual distance between the measured component in the hoistway and the elevator car side component meets the preset distance requirement; If the upper limit rubber strip is hit and the lower limit rubber strip is also hit, it is judged that the actual distance between the measured component in the hoistway and the elevator car side component is less than the preset distance requirement; If the upper limit rubber strip is not hit, and the lower limit rubber strip is not hit, it is determined that the actual distance between the measured component in the hoistway and the elevator car side component is greater than the preset distance requirement; If the upper measurement limit rubber strip is not hit, and the lower measurement limit rubber strip is hit, it is determined that the measuring device fails.

9. The method for measuring the installation dimensions of an elevator according to claim 6, It is characterized in that The measuring method further comprises step S4, sending the determination result of whether the actual distance between the measured component in the hoistway and the elevator car side component in step S3 meets the preset distance requirement and the position information of the measured component in the hoistway to the mobile device.

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