CN113686288A - Method and device for detecting abrasion of guide shoe of sliding door - Google Patents
Method and device for detecting abrasion of guide shoe of sliding door Download PDFInfo
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- CN113686288A CN113686288A CN202111246560.1A CN202111246560A CN113686288A CN 113686288 A CN113686288 A CN 113686288A CN 202111246560 A CN202111246560 A CN 202111246560A CN 113686288 A CN113686288 A CN 113686288A
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- sliding door
- wear
- guide shoe
- inclination angle
- tilt angle
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/08—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness for measuring thickness
Abstract
The invention relates to a method for detecting abrasion of a guide shoe of a sliding door, which comprises the following steps: s1, detecting the inclination angle of the sliding door relative to the vertical axis by adopting an inclination angle sensor arranged on the sliding door; s2, calculating the wear thickness of the guide shoe based on the inclination angle and the height of the sliding door; and S3, judging the wear state of the guide shoe based on the wear thickness and the wear threshold value. The invention also relates to a device for detecting the abrasion of the guide shoe of the sliding door. The method and the device for detecting the abrasion of the guide shoe of the sliding door are implemented, the inclination angle of the sliding door relative to the vertical axis is automatically acquired skillfully by arranging the inclination angle sensor, so that the abrasion thickness of the guide shoe is calculated, and the abrasion state of the guide shoe of the sliding door is automatically and indirectly measured by comparing the abrasion thickness with the abrasion threshold value.
Description
Technical Field
The invention relates to the field of sliding doors, in particular to a method and a device for detecting abrasion of a guide shoe of a sliding door.
Background
Due to the rapid growth of urbanization, the demand for rail transit is also continuously growing, and the application of platform screen doors is also increasingly wide. The shield door is usually a sliding door, and the most worn component in the specific process is the sliding door guide shoe. When the guide shoe of the sliding door is worn to a certain degree, the guide shoe of the sliding door needs to be replaced, otherwise, the sliding door is easy to operate unsmoothly and even is stuck to cause other faults. However, the guide shoe of the sliding door is positioned under the doorsill, so that the guide shoe is easily shielded from sight, and is not beneficial to carrying out detection of conventional vision and detection tools, so that certain potential safety hazards exist.
In the prior art, a special detection scheme for the abrasion of the guide shoe is not provided, and a method for detecting the guide shoe by periodically detaching is adopted to judge whether the guide shoe is replaced. Therefore, the above scheme may have the following problems in practical application: 1. the blindness is high, and the abrasion degree of the guide shoe cannot be accurately predicted; 2. the machine needs to be stopped and the threshold needs to be disassembled for detection, so that time and labor are wasted; 3. the batch detection cannot be carried out, the maintenance cost is high, and the efficiency is low.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a method and an apparatus for detecting wear of a sliding door guide shoe, which can automatically determine the wear condition of the sliding door guide shoe, and has high accuracy and high reliability.
The technical scheme adopted by the invention for solving the technical problems is as follows: a method for detecting the abrasion of a guide shoe of a sliding door is constructed, and comprises the following steps:
s1, detecting the inclination angle of the sliding door relative to the vertical axis by adopting an inclination angle sensor arranged on the sliding door;
s2, calculating the wear thickness of the guide shoe based on the inclination angle and the height of the sliding door;
and S3, judging the wear state of the guide shoe based on the wear thickness and the wear threshold value.
In the method for detecting wear of a guide shoe of a sliding door according to the present invention, in step S2, the wear thickness is calculated based on the following formula:
t represents the thickness of the wear,hindicating the height of the sliding door;θrepresenting the tilt angle.
In the method for detecting wear of a guide shoe of a sliding door according to the present invention, the step S1 further includes the steps of:
s11, after the inclination angle sensor is installed for the first time or the guide shoe is replaced, detecting a calibration inclination angle of the sliding door relative to a vertical axis when the sliding door is located at a calibration position by using the inclination angle sensor;
s12, when the abrasion is detected, sliding the sliding door to the calibration position and making the sliding door static, and then detecting the current inclination angle of the sliding door relative to the vertical axis;
s13, calculating the inclination angle based on the calibration inclination angle and the current inclination angle.
In the method for detecting wear of the guide shoe of the sliding door, the calibration position comprises a fully-opened door position, a fully-closed door position or a door opening center position.
In the method for detecting wear of the guide shoe of the sliding door according to the present invention, the tilt angle sensor is attached to the upper cross tube of the sliding door along a horizontal axis, and the tilt angle sensor moves along with the sliding door.
In the method for detecting the abrasion of the guide shoe of the sliding door, each sliding door is provided with one corresponding inclination angle sensor, each inclination angle sensor is in communication connection with one corresponding door control unit control panel to output the inclination angle, and each door control unit control panel is connected to a master control system to output the abrasion state of the guide shoe.
Another technical solution to solve the technical problems of the present invention is to construct a sliding door guide shoe wear detection apparatus, including:
the inclination angle sensor is arranged on the sliding door and used for detecting the inclination angle of the sliding door relative to a vertical axis;
a calculation module for calculating a wear thickness of the guide shoe based on the tilt angle and the height of the sliding door;
and the judging module is used for judging the wear state of the guide shoe based on the wear thickness and the wear threshold.
In the detecting device for detecting the wear of the guide shoe of the sliding door, the calculating module is used for calculating the wear thickness based on the following formula:
t represents the thickness of the wear,hindicating the height of the sliding door;θrepresenting the tilt angle.
In the apparatus for detecting wear of a guide shoe of a sliding door according to the present invention, the tilt angle sensor is attached to an upper cross tube of the sliding door along a horizontal axis, and the tilt angle sensor moves along with the sliding door.
In the device for detecting the abrasion of the guide shoe of the sliding door, the calculation module and the judgment module are arranged in the gate control unit control panels of the sliding door, a corresponding inclination angle sensor is respectively arranged on each sliding door, each inclination angle sensor is in communication connection with the corresponding gate control unit control panel to output the inclination angle, and each gate control unit control panel is connected to a master control system to output the abrasion state of the guide shoe.
The method and the device for detecting the abrasion of the guide shoe of the sliding door are implemented, the inclination angle of the sliding door relative to the vertical axis is automatically acquired skillfully by arranging the inclination angle sensor, so that the abrasion thickness of the guide shoe is calculated, and the abrasion state of the guide shoe of the sliding door is automatically and indirectly measured by comparing the abrasion thickness with the abrasion threshold value. Furthermore, the inclination angle sensor can be arranged on each sliding door respectively, so that the abrasion states of the guide shoes of the sliding doors can be detected quickly and simultaneously in batches, and the detection precision is high.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic flow chart of a preferred embodiment of the sliding door shoe wear detection method of the present invention;
FIG. 2 is a schematic view of a tilt angle sensor installation;
FIG. 3 is a schematic view of the pre-wear tilt angle sensor and guide shoe position;
FIG. 4 is a schematic illustration of the worn tilt angle sensor and guide shoe position;
fig. 5 is a schematic block diagram of a preferred embodiment of the sliding door shoe wear detection apparatus of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention relates to a method for detecting abrasion of a guide shoe of a sliding door, which comprises the steps of detecting an inclination angle of the sliding door relative to a vertical axis by adopting an inclination angle sensor arranged on the sliding door; calculating a wear thickness of the guide shoe based on the tilt angle and the height of the sliding door; and judging the wear state of the guide shoe based on the wear thickness and the wear threshold value. In the present invention, the wear thickness is calculated based on the following formula:
(ii) a t represents the thickness of the wear,hindicating the height of the sliding door;θrepresenting the tilt angle. The invention skillfully sets an inclination angle sensor to automatically acquire the inclination angle of the sliding door relative to a vertical axis, thereby calculating the wear thickness of the guide shoe, automatically and indirectly measuring the wear state of the guide shoe of the sliding door by comparing the wear thickness with a wear threshold value, and has the advantages of automaticHigh degree of transformation, high detection efficiency, good quality and strong reliability, and has the advantages of ingenious conception, simple and convenient operation process and easy implementation.
Fig. 1 is a schematic flow chart of a preferred embodiment of the sliding door guide shoe wear detection method of the present invention. As shown in fig. 1, in step S1, the tilt angle of the sliding door with respect to the vertical axis is detected using a tilt angle sensor mounted on the sliding door.
Fig. 2 is a schematic view of the tilt angle sensor installation. As shown in fig. 2, the tilt angle sensor 1 may be mounted on the upper cross tube 21 of the sliding door 2 along the horizontal axis X, for example, on the back of the upper cross tube 21 using bolts, and the tilt angle sensor 1 may move along with the sliding door 2. The inclination angle sensor 1 detects the inclination angle of the sliding door 2 relative to the vertical axis Z axis. Of course, in other preferred embodiments of the present invention, the tilt angle sensor 1 may be mounted at any suitable position on the sliding door 2, and moves together with the sliding door 2, and the mounting direction corresponds to the direction of detecting the swing of the worn position of the guide shoe 4 under the sliding door 2, as long as it can perform the detection of the tilt angle of the sliding door with respect to the vertical axis.
In step S2, a wear thickness of the guide shoe is calculated based on the inclination angle and the height of the sliding door. In a preferred embodiment of the invention, the wear thickness is calculated based on the following formula:
t represents the thickness of the wear,hindicating the height of the sliding door;θrepresenting the tilt angle.
FIG. 3 is a schematic diagram of the tilt angle sensor and guide shoe position before wear. FIG. 4 is a schematic illustration of the worn tilt angle sensor and guide shoe position. The principle of the above calculation process is described below with reference to fig. 3-4.
As shown in fig. 3, the guide shoe 4 of the sliding door 2 is disposed in the center of the rocker 3 along the vertical axis Z-axis. The tilt angle sensor 1 is mounted along the horizontal axis X-axis in the upper cross tube 21 of the sliding door 2 and is in communication with the door control unit control board 6 via a signal transmission line 5, while the door control unit control board 6 is further in communication with the general control system 7. Before the guide shoe 4 is worn, the sliding door 2 does not incline, i.e. no included angle is formed between the vertical axis Z axis, and the inclination angle of the sliding door 2 relative to the vertical axis Z axis, which is detected by the inclination angle sensor 1, is 0 or close to 0.
When the guide shoes 4 are worn, as shown in fig. 4, the sliding door 2 is tilted in the fixed direction due to the wear of the guide shoes 4, and at this time, an inclination angle is formed between the sliding door 2 and the vertical axis Z-axisθ. And the tilt angle sensor 1 can detect the tilt angleθ。
Referring to fig. 4, by the principle of trigonometric geometry, the wear thickness of the guide shoe 4 can be derived by the following formula
Wherein t represents the wear thickness,hindicating the height of the sliding door;θrepresenting the tilt angle.
In step S3, the wear state of the guide shoe is determined based on the wear thickness and a wear threshold. For example, the actual thickness of the guide shoe 4 is generally 1.5-1.6 mm, and it is generally considered that the guide shoe needs to be replaced when the wear exceeds 1mm, and the identification progress is generally 0.2 mm.
In a further preferred embodiment of the present invention, when the wear thickness is determined to be greater than the wear threshold, the wear state of the guide shoe is determined to be heavily worn, and at this time, an alarm may be issued to remind replacement. In a further preferred embodiment of the present invention, when the difference between the wear thickness and the wear threshold is determined to be within the set range, it may be determined that the wear state of the guide shoe is moderate wear, and may send an early warning message to remind a worker to perform maintenance or replacement, so as to avoid the occurrence of failures such as unsmooth operation or even jamming of the sliding door due to excessive wear amount, effectively solve the problem that normal visual detection and batch detection cannot be performed due to the guide shoe being blocked, and improve the working efficiency and the detection reliability.
The angular resolution of the common tilt angle sensor 1 on the market at present can reach 0.005 degree, and the angular resolution of the high-precision tilt angle sensor 1 can reach 0.001 degree. The height of the sliding door 2 is typically 2 m. When a common inclination angle sensor is adopted, the resolution precision of the abrasion of the corresponding bottom guide shoe is 2000 star (0.005 degrees) =0.1745mm, and the required identification precision can be achieved. If a high-precision inclination angle sensor with the resolution of 0.001 degrees is adopted, the identification precision can be as high as 0.035mm, and therefore, the high-precision inclination angle sensor is preferably adopted so as to carry out detection more accurately.
In a preferred embodiment of the present invention, in order to avoid errors caused during installation or replacement, and to improve detection accuracy, calibration may be performed first after the inclination angle sensor is first installed or the guide shoe is replaced. The calibration procedure is as follows. After the inclination angle sensor is installed or the guide shoe is replaced for the first time, the inclination angle sensor is adopted to detect the calibration inclination angle of the sliding door relative to the vertical axis when the sliding door is located at the calibration position. In performing wear detection, the sliding door is slid to the calibration position and is stationary, and then the current tilt angle of the sliding door with respect to the vertical axis is detected. The tilt angle is then calculated based on the calibrated tilt angle and the current tilt angle.
The principle of calibration is to record the current position as the initial position of the guide shoe without wear, and the subsequent test calculates the deviation as the wear inclination angle by taking the current position as the reference. The position of the sliding door should be fixed at a fixed position during calibration, such as a fully-opened state, a fully-closed state and a door opening center state, so that the deviation caused by different door opening positions can be avoided. Or a plurality of fixed positions can be selected to be calibrated, and data can be stored as the reference of different corresponding positions. The sliding door should be in a stationary state at the time of calibration so as not to disturb the measurement of the tilt angle sensor by acceleration.
After the basic deviation is obtained, when the abrasion detection is carried out, the sliding door 2 can be moved to a fixed position corresponding to the calibration through command control, the current inclination angle of the sliding door relative to the vertical axis is detected by an inclination angle sensor after the sliding door is static, the measured value is compared with a reference value, and the difference value is the deviation angle caused by the abrasion, namely the inclination angle.
The invention skillfully sets the inclination angle sensor to automatically acquire the inclination angle of the sliding door relative to the vertical axis, thereby calculating the wear thickness of the guide shoe, and automatically and indirectly measures the wear state of the guide shoe of the sliding door by comparing the wear thickness with the wear threshold value.
Further, as known to those skilled in the art, the existing subway screen door system may include a plurality of sliding door devices and a general control system 7 for controlling the respective sliding door devices. Each of the sliding door devices includes the aforementioned sliding door 2, a guide shoe 4, and a door control panel 6. Therefore, in a preferred embodiment of the present invention, one tilt angle sensor 1 may be mounted on each of the upper cross tubes 21 of the sliding doors 2. Each of the inclination angle sensors 1 is in communication connection with a corresponding one of the gate control unit control boards 6 to output the detected inclination angle, and each gate control unit control board 6 calculates the wear state of its corresponding guide shoe 4 through the inclination angle and then transmits the wear state to the master control system 7. The master control system 7 is used for uniformly displaying and processing the wear states of the guide shoes 4 of the sliding doors and providing an inquiry function. Therefore, the independent inclination angle sensor device is arranged at the top of each sliding door, so that the abrasion degree information of the guide shoes of the sliding doors can be collected in real time at regular time, and a decision maker can make a judgment in time. And the whole detection process does not need to take apart the shielding part for detection, so that the detection efficiency and the detection quality are greatly improved, and the requirement of batch detection can be met. And the measuring result and the historical data are convenient for a computer to record, and the wear conditions of different sliding doors can be contrasted and analyzed by analyzing the historical data trend. The wear states of the guide shoes of all sliding doors of the shielding door system are detected regularly, the service lives of the guide shoes can be estimated in advance through the wear change trend, and the guide shoes which are seriously worn are replaced in advance, so that the fault that the sliding doors are unsmooth in operation and even blocked due to the fact that the guide shoes are thoroughly worn is avoided.
Fig. 5 is a schematic block diagram of a preferred embodiment of the sliding door shoe wear detection apparatus of the present invention. As shown in fig. 5, the sliding door guide shoe wear detection device includes: the device comprises a tilt angle sensor 100, a calculation module 200 and a judgment module 300. As shown in fig. 5, the tilt angle sensor 100 is mounted on the sliding door for detecting a tilt angle of the sliding door with respect to a vertical axis. The specific installation method can refer to the embodiment shown in fig. 2, and will not be described in detail here.
The calculation module 200 is configured to calculate a wear thickness of the guide shoe based on the tilt angle and the height of the sliding door. The determining module 300 is configured to determine a wear state of the guide shoe based on the wear thickness and a wear threshold. Preferably, the calculation module 200 is configured to calculate the wear thickness based on the following formula:
and t represents the wear thickness,hindicating the height of the sliding door;θrepresenting the tilt angle.
Preferably, the calculation module 200 and the judgment module 300 can be implemented by any suitable hardware, software or combination of hardware and software, and can be disposed in the control board of the door control unit of the sliding door, and can be constructed by separate modules or by combination. The calculation module 200 and the determination module 300 may also be implemented by computer programs. The computer program in this document refers to: any expression, in any programming language, code or notation, of a set of instructions intended to cause a system having an information processing capability to perform a particular function either directly or after either or both of the following: a) conversion to other languages, codes or symbols; b) reproduced in a different format.
Preferably, the calculation module 200 and the judgment module 300 are disposed in a door control unit control board of the sliding door. In a preferred embodiment of the invention, a corresponding one of the tilt angle sensors is respectively installed on each sliding door, each tilt angle sensor is in communication connection with a corresponding one of the gate control unit control boards to output the tilt angle, and each gate control unit control board is connected to the master control system to output the wear state of the guide shoe thereof. The sliding door guide shoe wear detection device of the present invention can be implemented with reference to the foregoing embodiments, and will not be described herein in detail.
The detection device for the abrasion of the guide shoe of the sliding door is skillfully arranged to automatically acquire the inclination angle of the sliding door relative to the vertical axis by the inclination angle sensor, so that the abrasion thickness of the guide shoe is calculated, and the abrasion thickness of the guide shoe is automatically and indirectly measured by comparing the abrasion thickness with an abrasion threshold value. Furthermore, the inclination angle sensor can be arranged on each sliding door respectively, so that the abrasion states of the guide shoes of the sliding doors can be detected quickly and simultaneously in batches, and the detection precision is high.
While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from its scope. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A method for detecting the abrasion of a guide shoe of a sliding door is characterized by comprising the following steps:
s1, detecting the inclination angle of the sliding door relative to the vertical axis by adopting an inclination angle sensor arranged on the sliding door;
s2, calculating the wear thickness of the guide shoe based on the inclination angle and the height of the sliding door;
and S3, judging the wear state of the guide shoe based on the wear thickness and the wear threshold value.
2. The method for detecting wear of a guide shoe of a sliding door according to claim 1, wherein in the step S2, the wear thickness is calculated based on the following formula:
t represents the thickness of the wear,hindicating the height of the sliding door;θrepresenting the tilt angle.
3. The sliding door shoe wear detection method according to claim 2, wherein the step S1 further comprises the steps of:
s11, after the inclination angle sensor is installed for the first time or the guide shoe is replaced, detecting a calibration inclination angle of the sliding door relative to a vertical axis when the sliding door is located at a calibration position by using the inclination angle sensor;
s12, when the abrasion is detected, sliding the sliding door to the calibration position and making the sliding door static, and then detecting the current inclination angle of the sliding door relative to the vertical axis;
s13, calculating the inclination angle based on the calibration inclination angle and the current inclination angle.
4. The method of claim 3, wherein the calibration position comprises a fully open position, a fully closed position, or a door open center position.
5. The sliding door shoe wear detection method according to claim 2, wherein the tilt angle sensor is mounted along a horizontal axis on an upper cross tube of the sliding door, the tilt angle sensor moving with the sliding door.
6. The method for detecting the abrasion of the guide shoe of the sliding door according to claim 3, wherein a corresponding one of the tilt angle sensors is respectively installed on each sliding door, each tilt angle sensor is in communication connection with a corresponding one of the gate control unit control boards to output the tilt angle, and each gate control unit control board is connected to a master control system to output the abrasion state of the guide shoe.
7. A sliding door guide shoe wear detection device, comprising:
the inclination angle sensor is arranged on the sliding door and used for detecting the inclination angle of the sliding door relative to a vertical axis;
a calculation module for calculating a wear thickness of the guide shoe based on the tilt angle and the height of the sliding door;
and the judging module is used for judging the wear state of the guide shoe based on the wear thickness and the wear threshold.
8. The sliding door shoe wear detection device of claim 7, wherein the calculation module is configured to calculate the wear thickness based on the following equation:
t represents the thickness of the wear,hindicating the height of the sliding door;θrepresenting the tilt angle.
9. The sliding door shoe wear detection device of claim 8, wherein the tilt angle sensor is mounted along a horizontal axis on an upper cross tube of the sliding door, the tilt angle sensor moving with the sliding door.
10. The sliding door guide shoe wear detection device according to claim 8, wherein the calculation module and the judgment module are disposed in door control unit control boards of the sliding doors, a corresponding one of the tilt angle sensors is mounted on each sliding door, each tilt angle sensor is in communication connection with a corresponding one of the door control unit control boards to output the tilt angle, and each door control unit control board is connected to a general control system to output a wear state of the guide shoe.
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| CN202111246560.1A CN113686288A (en) | 2021-10-26 | 2021-10-26 | Method and device for detecting abrasion of guide shoe of sliding door |
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2021
- 2021-10-26 CN CN202111246560.1A patent/CN113686288A/en active Pending
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| US5975250A (en) * | 1996-06-25 | 1999-11-02 | Siemens Aktiengesellschaft | Apparatus and method for detecting the thickness of a brake lining |
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Application publication date: 20211123 |