CN113153863B - Oil cylinder expansion time detection device, detection method and detection terminal - Google Patents
Oil cylinder expansion time detection device, detection method and detection terminal Download PDFInfo
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- CN113153863B CN113153863B CN202110576069.9A CN202110576069A CN113153863B CN 113153863 B CN113153863 B CN 113153863B CN 202110576069 A CN202110576069 A CN 202110576069A CN 113153863 B CN113153863 B CN 113153863B
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- oil cylinder
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/28—Means for indicating the position, e.g. end of stroke
- F15B15/2815—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT
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- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The invention relates to the technical field of detection, in particular to an oil cylinder stretching time detection device, an oil cylinder stretching time detection method, a detection terminal and a computer readable medium, wherein the oil cylinder stretching time detection device comprises: the bracket is suitable for being fixed outside the cylinder body of the oil cylinder; the rotating wheel is rotatably arranged on the bracket; the baffle comprises a first connecting part which is suitable for being connected with the end part of a piston rod of the oil cylinder and a second connecting part which is suitable for being connected with the rotating wheel, and the baffle drives the rotating wheel to rotate when driven by the piston rod to move; and the sensor is connected with the rotating wheel and used for collecting and outputting a starting signal and a stopping signal of the rotating wheel. The oil cylinder stretching time detection device can adopt an intelligent detection means to accurately measure the stretching time of the oil cylinder, so that the measurement efficiency can be improved, and the accuracy of measured data can be ensured. Meanwhile, the oil cylinder expansion time detection device does not need a special test bench, is flexible and portable, saves time and is convenient, and occupied space is small.
Description
Technical Field
The invention relates to the technical field of detection, in particular to an oil cylinder expansion time detection device, an oil cylinder expansion time detection method, an oil cylinder expansion time detection terminal and a computer readable medium.
Background
For hydraulic excavators, the performance of the hydraulic cylinder directly affects the working performance of the hydraulic cylinder, and all hydraulic excavator manufacturers have more detailed and strict standards for the control and test detection of the relevant performance of the hydraulic cylinder.
The oil cylinder expansion time is a key index for evaluating the hydraulic excavator. At present, the actual measurement of the oil cylinder expansion time mainly depends on manual meter reading recording, and a reading error exists, so that the manual measurement method is low in efficiency and inaccurate in data recording.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defects of low time efficiency and inaccurate data of the measuring oil cylinder in the prior art, thereby providing the oil cylinder expansion time detection device, the detection method, the detection terminal and the computer readable medium which can improve the measuring efficiency and ensure the accuracy of the measuring data.
In order to solve the technical problems, the invention provides an oil cylinder expansion time detection device, which comprises:
the bracket is suitable for being fixed outside the cylinder body of the oil cylinder;
the rotating wheel is rotatably arranged on the bracket;
the baffle comprises a first connecting part which is suitable for being connected with the end part of a piston rod of the oil cylinder and a second connecting part which is suitable for being connected with the rotating wheel, and the baffle drives the rotating wheel to rotate when driven by the piston rod to move;
and the sensor is connected with the rotating wheel and used for collecting and outputting a starting signal and a stopping signal of the rotating wheel.
Optionally, the second connection portion is in frictional contact with the rotating wheel.
Optionally, the bracket is adapted to be connected to the cylinder by magnetic attraction.
Optionally, the first connection portion is adapted to be connected to an end of the piston rod by magnetic attraction.
Optionally, the sensor is an encoder, and the encoder is further used for collecting and outputting revolution information of the rotating wheel.
The invention also provides a method for detecting the oil cylinder stretching time, which is used for detecting a terminal, and the detecting terminal is connected with at least one oil cylinder stretching time detecting device, and is characterized by comprising the following steps:
receiving a first starting signal; when the baffle starts to move along with the piston rod from an initial position, the sensor outputs the first starting signal;
receiving a first stop signal; when the baffle reaches the maximum displacement along with the piston rod, the sensor outputs the first stop signal;
calculating the extending time of the oil cylinder according to the first starting signal and the first stopping signal;
receiving a second starting signal; when the baffle is retracted from the maximum displacement position along with the piston rod, the sensor outputs the second starting signal;
receiving a second stop signal; when the baffle returns to the initial position along with the piston rod from the maximum displacement, the sensor outputs the second stop signal;
and calculating the retraction time of the oil cylinder according to the second starting signal and the second stopping signal.
Optionally, the method further comprises:
receiving first journey information; when the baffle reaches the maximum displacement along with the piston rod, the sensor outputs the first travel information;
receiving second journey information; the second stroke information of the sensor when the baffle returns to the initial position along with the piston rod from the maximum displacement position;
and when the difference value between the first travel information and the second travel information is within a preset range, calculating the extending time and/or the retracting time of the oil cylinder.
Optionally, the method further comprises: and when the difference value between the first travel information and the second travel information exceeds a preset range, re-acquiring the first travel information and the second travel information until the difference value between the first travel information and the second travel information is within the preset range.
Optionally, the method further comprises: when the difference between the first travel information and the second travel information is within a preset range,
calculating the travel information of the oil cylinder; and/or
Calculating the average extending speed of the oil cylinder; and/or
And calculating the average retraction speed of the oil cylinder.
Optionally, the detection terminal is connected with a plurality of oil cylinder expansion time detection devices, and the detection method further includes:
acquiring an identification of an oil cylinder expansion time detection device;
and the obtained extending time, retracting time, travel information, average extending speed or average retracting speed is corresponding to the oil cylinder stretching time detection device through the mark.
The invention also provides a detection terminal which comprises a memory and a processor, wherein the memory and the processor are in communication connection, the memory stores computer instructions, and the processor executes the computer instructions of the detection method.
The invention also provides a computer readable medium having stored thereon a computer program which when executed by a processor realizes the steps of the detection method.
The technical scheme of the invention has the following advantages:
1. according to the oil cylinder expansion time detection device provided by the invention, when the expansion time of the oil cylinder is required to be detected, the support is fixedly connected outside the cylinder body of the oil cylinder, the end part of the piston rod of the oil cylinder is connected with the first connecting part of the baffle plate, and the rotating wheel is connected with the second connecting part of the baffle plate for detection. When the extension time is measured, firstly, the piston rod is ensured to be completely retracted into the cylinder body of the oil cylinder, timing is prepared, the piston rod extends to the right, the baffle moves synchronously along with the piston rod to drive the rotating wheel to rotate anticlockwise, the sensor is connected with the rotating wheel, the starting signal of the rotating wheel is collected and output, the starting time is 0 at the moment, when the piston rod moves to the maximum stroke position, the rotating wheel stops rotating, the sensor collects and outputs a stop signal, and the value of the recording time T1 and T1 is the extension time of the oil cylinder. When the retraction time is measured, firstly, the piston rod is ensured to fully extend out of the cylinder body of the oil cylinder, timing is prepared, the piston rod is contracted and moved leftwards, the baffle moves synchronously along with the piston rod to drive the rotating wheel to rotate clockwise, the sensor is connected with the rotating wheel, the starting signal of the rotating wheel is collected and output, at the moment, the starting time is 0, when the piston rod is fully retracted into the cylinder body, the rotating wheel stops rotating, the sensor collects and outputs a stop signal, and the recording time T2 and the value of T2 are the retraction time of the oil cylinder. According to the oil cylinder stretching time detection device provided by the embodiment, an intelligent detection means can be adopted to accurately measure the stretching time of the oil cylinder, so that the measurement efficiency can be improved, and the accuracy of measured data can be ensured. Meanwhile, the oil cylinder expansion time detection device does not need a special test bench, is flexible and portable, saves time and is convenient, and occupied space is small.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a front view of an oil cylinder expansion time detecting device provided in embodiment 1 of the present invention at the time of detection;
fig. 2 is a left side view of the cylinder expansion time detecting device provided in embodiment 1 of the present invention at the time of detection.
Reference numerals illustrate:
1-a cylinder body; 2-a piston rod; 3-a bracket; 4-rotating wheels; 5-baffle plates; 51-a first connection; 52-a second connection; 6-encoder.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Example 1
For hydraulic excavators, the performance of the hydraulic cylinder directly affects the working performance of the hydraulic cylinder, and all hydraulic excavator manufacturers have more detailed and strict standards for the control and test detection of the relevant performance of the hydraulic cylinder.
The oil cylinder expansion time is a key index for evaluating the hydraulic excavator. At present, the actual measurement of the oil cylinder expansion time mainly depends on manual meter reading recording, and a reading error exists, so that the manual measurement method is low in efficiency and inaccurate in data recording.
Therefore, the embodiment provides the oil cylinder stretching time detection device, which can improve the measurement efficiency and ensure the accuracy of measurement data. In one embodiment, as shown in fig. 1 and 2, the cylinder expansion/contraction time detection apparatus includes: bracket 3, rotation wheel 4, baffle 5, sensor.
Wherein the bracket 3 is suitable for being fixed outside the cylinder body 1 of the oil cylinder; the rotating wheel 4 is rotatably arranged on the bracket 3; the baffle plate 5 comprises a first connecting part 51 suitable for being connected with the end part of the piston rod 2 of the oil cylinder and a second connecting part 52 suitable for being connected with the rotating wheel 4, and when the baffle plate 5 moves under the drive of the piston rod 2, the rotating wheel 4 is driven to rotate; the sensor is connected with the rotating wheel 4 and collects and outputs a starting signal and a stopping signal of the rotating wheel 4.
In the present embodiment, when it is necessary to detect the expansion and contraction time of the cylinder, the bracket 3 is fixedly connected to the outside of the cylinder body 1 of the cylinder, the end of the piston rod 2 of the cylinder is connected to the first connection portion 51 of the shutter 5, and the rotating wheel 4 is connected to the second connection portion 52 of the shutter 5, and then the detection is performed. When the extension time is measured, firstly, the piston rod 2 is ensured to be completely retracted into the cylinder body 1 of the oil cylinder, timing is prepared, the piston rod 2 is extended, the baffle plate 5 moves rightwards as shown in fig. 1 and synchronously moves along with the piston rod 2 to drive the rotating wheel 4 to rotate anticlockwise, a sensor is connected with the rotating wheel 4 to collect and output a starting signal of the rotating wheel 4, at the moment, the starting time is 0, when the piston rod 2 moves to the maximum stroke position, the rotating wheel 4 stops rotating, the sensor collects and outputs a stopping signal, and the recording time T1 and the value of T1 are the extension time of the oil cylinder. When the retraction time is measured, firstly, the piston rod 2 is ensured to fully extend out of the cylinder body 1 of the oil cylinder, timing is prepared, the piston rod 2 is contracted and moves leftwards, the baffle plate 5 moves synchronously along with the piston rod 2 to drive the rotating wheel 4 to rotate clockwise, the sensor is connected with the rotating wheel 4 to collect and output a starting signal of the rotating wheel 4, the timing is started at the moment, the starting time is 0, when the piston rod 2 is fully retracted into the cylinder body 1, the rotating wheel 4 stops rotating, the sensor collects and outputs a stopping signal, and the values of the recording time T2 and T2 are the retraction time of the oil cylinder. According to the oil cylinder stretching time detection device provided by the embodiment, an intelligent detection means can be adopted, the stretching time of the oil cylinder can be accurately measured, the measurement efficiency can be improved, and the accuracy of measured data can be ensured. Meanwhile, the oil cylinder expansion time detection device does not need a special test bench, is flexible and portable, saves time and is convenient, and occupied space is small.
On the basis of the above embodiment, in a preferred embodiment, the second connection portion 52 is in frictional contact with the rotating wheel 4. In this embodiment, since the second connection portion 52 is in friction contact with the rotating wheel 4, during installation, only the rotating wheel 4 needs to be ensured to be pressed against the second connection portion 52, and when the baffle 5 follows the process of the synchronous movement of the piston rod 2, friction force is generated between the second connection portion 52 of the baffle 5 and the rotating wheel 4, the friction force drives the rotating wheel 4 to rotate, the structure of the baffle 5 is simple, the cost is low, and the installation connection is convenient. In an alternative embodiment, the second connecting portion 52 is in meshed connection with the rotating wheel 4, specifically, the second connecting portion 52 is a rack, the rotating wheel 4 is a gear, the gear is in meshed connection with the rack, and when the baffle 5 follows the piston rod 2 to move synchronously, the rack is meshed with the gear to drive the gear to rotate.
Specifically, the baffle 5 is L-shaped and includes a horizontal portion and a vertical portion, wherein the vertical portion is a first connecting portion 51, and the horizontal portion is a second connecting portion 52.
To ensure that the second connection part 52 can move smoothly, a guide rail may be provided on the bracket 3, the second connection part 52 being horizontally provided in the guide rail. In order to prevent the friction force between the second connection portion 52 and the guide rail from affecting the telescopic speed and the telescopic time of the piston rod 2, the surface of the guide rail is a smooth surface.
On the basis of the above embodiments, in a preferred embodiment, the bracket 3 is adapted to be connected to the cylinder 1 by magnetic attraction. Specifically, the part that support 3 links to each other with cylinder body 1 or support 3 wholly are made by magnetic material, perhaps need the fixed connection magnet of position department that links to each other with cylinder body 1 on support 3, fix support 3 on cylinder body 1 through the magnetic attraction, and support 3 and cylinder body 1's connected mode is simple and convenient, and need not to change the original structure of hydro-cylinder body 1, and support 3's structure is simpler, need not special test bench, and is nimble portable, and the time-saving is convenient, occupation space is less. In an alternative embodiment, the bracket 3 is bolted to the cylinder 1.
On the basis of the above-described embodiments, in a preferred embodiment, the first connection portion 51 is adapted to be connected to the end of the piston rod 2 by magnetic attraction. In the present embodiment, the first connecting portion 51 is made of a magnetic material, or a magnet is fixedly connected to the first connecting portion 51, and the first connecting portion 51 is connected to the end portion of the piston rod 2 by magnetic attraction, so that the connection manner between the first connecting portion 51 and the end portion of the piston rod 2 is simple and convenient, and the structure of the end portion of the piston rod 2 does not need to be changed.
On the basis of the above embodiment, in a preferred embodiment, the sensor is an encoder 6, and the encoder 6 is further configured to collect and output information on the number of revolutions of the rotating wheel 4. In the present embodiment, the encoder 6 collects and outputs a start signal, a stop signal, and revolution information of the rotary wheel 4. When the extension time is measured, firstly, the piston rod 2 is ensured to be completely retracted into the cylinder body 1 of the oil cylinder, timing is prepared, the piston rod 2 is extended, the baffle plate 5 moves rightwards as shown in fig. 1 and synchronously moves along with the piston rod 2 to drive the rotating wheel 4 to rotate anticlockwise, the encoder 6 is connected with the rotating wheel 4, a starting signal of the rotating wheel 4 is collected and output, at the moment, timing is started, the starting time is 0, the encoder 6 starts to record the revolution number of the rotating wheel 4, when the piston rod 2 moves to the maximum stroke position, the rotating wheel 4 stops rotating, the encoder 6 collects and outputs a stopping signal and the revolution number n1 of the rotating wheel 4, the values of the recording times T1 and T1 are the extension time of the oil cylinder, and the extension stroke L1=n1×C of the piston rod 2 is the circumference of the rotating wheel 4. When the retraction time is measured, firstly, the piston rod 2 is ensured to fully extend out of the cylinder body 1 of the oil cylinder, timing is prepared, the piston rod 2 is contracted and moves leftwards, the baffle plate 5 moves synchronously along with the piston rod 2 to drive the rotating wheel 4 to rotate clockwise, the encoder 6 is connected with the rotating wheel 4 to collect and output a starting signal of the rotating wheel 4, at the moment, the starting time is 0, the encoder 6 starts to record the revolution number of the rotating wheel 4, when the piston rod 2 is fully retracted into the cylinder body 1, the rotating wheel 4 stops rotating, the encoder 6 collects and outputs a stopping signal and the revolution number n2 of the rotating wheel 4, the values of the recording times T2 and T2 are the retraction time of the oil cylinder, and the retraction stroke L2=n2×C of the piston rod 2 is the circumference of the rotating wheel 4. The telescopic stroke of the piston rod 2 can be measured using the encoder 6. According to the oil cylinder stretching time detection device provided by the embodiment, the intelligent detection means is adopted, so that the stretching time of the oil cylinder can be accurately measured, the measurement efficiency can be improved, and the accuracy of measured data can be ensured.
Specifically, the sensor outputs a rotation angle displacement signal of the rotating wheel, and the rotation number information of the rotating wheel can be obtained through the rotation angle displacement signal, so that the movement stroke of the oil cylinder is indirectly detected.
In a preferred embodiment, the encoder 6 is coaxially connected to the rotating wheel 4, and in this embodiment, the encoder 6 rotates in synchronization with the rotating wheel 4, and the number of revolutions of the rotating wheel 4 can be accurately measured. In an alternative embodiment, the sensor may be provided directly on the rotating wheel 4.
Example 2
The embodiment provides a method for detecting the oil cylinder stretching time, which is used for detecting a terminal, wherein the detecting terminal is connected with at least one oil cylinder stretching time detecting device provided in the embodiment. In one embodiment, the detection method comprises the steps of:
s1: receiving a first starting signal; when the baffle 5 starts to move along with the piston rod 2 from the initial position, the sensor outputs a first starting signal;
s2: receiving a first stop signal; when the baffle 5 reaches the maximum displacement along with the piston rod 2, the sensor outputs a first stop signal;
s3: and calculating the extension time of the oil cylinder according to the first starting signal and the first stopping signal. Specifically, when the detection terminal receives the first start signal, the recording start time is 0, and when the detection terminal receives the first stop signal, the values of the recording times T1 and T1 are the extending time of the oil cylinder.
S4: receiving a second starting signal; when the baffle 5 is retracted with the piston rod 2 from the maximum displacement position, the sensor outputs a second starting signal;
s5: receiving a second stop signal; when the baffle 5 returns to the initial position along with the piston rod 2 from the maximum displacement, the sensor outputs a second stop signal;
s6: and calculating the retraction time of the oil cylinder according to the second starting signal and the second stopping signal. Specifically, when the detection terminal receives the second start signal, the recording start time is 0, and when the detection terminal receives the second stop signal, the values of the recording times T2 and T2 are the oil cylinder retraction time.
Specifically, when detecting, when measuring the extension time, firstly, ensuring that the piston rod 2 is positioned at an initial position in the cylinder body 1 of the fully retracted cylinder, preparing for timing, extending the piston rod 2, moving rightwards as shown in fig. 1, synchronously moving the baffle plate 5 along with the piston rod 2 to drive the rotating wheel 4 to rotate anticlockwise, connecting the sensor with the rotating wheel 4, collecting and outputting a first starting signal of the rotating wheel 4, receiving the first starting signal by the detection terminal and starting timing, recording the starting time to be 0, when the piston rod 2 moves to a maximum stroke position, enabling the baffle plate 5 to reach the maximum displacement along with the maximum displacement, stopping rotating the rotating wheel 4, collecting and outputting a first stopping signal by the sensor, receiving the first stopping signal by the detection terminal, and recording the time T1 and the value of T1, namely the extension time of the cylinder. When the retraction time is measured, firstly, the piston rod 2 is ensured to fully extend out of the cylinder body 1 of the oil cylinder, the baffle plate 5 is positioned at the maximum displacement position, timing is prepared, the piston rod 2 is contracted and moved leftwards, the baffle plate 5 moves synchronously along with the piston rod 2 to drive the rotating wheel 4 to rotate clockwise, the sensor is connected with the rotating wheel 4, a second starting signal of the rotating wheel 4 is collected and output, the detection terminal receives the second starting signal and starts timing, the recording starting time is 0, when the piston rod 2 is fully retracted into the cylinder body 1, the baffle plate 5 returns to the initial position, the rotating wheel 4 stops rotating, the sensor collects and outputs a second stopping signal, and the detection terminal receives the second stopping signal and records the time T2 and the value of the T2, namely the retraction time of the oil cylinder. The detection method provided by the embodiment adopts an intelligent detection means, can accurately measure the expansion time of the oil cylinder, can improve the measurement efficiency and ensures the accuracy of measured data.
In addition to the above embodiments, in a preferred embodiment, the method further includes the steps of:
s7: receiving first journey information; when the baffle 5 reaches the maximum displacement along with the piston rod 2, the sensor outputs first travel information; specifically, the first stroke information is the extension stroke L1 of the piston rod 2.
S8: receiving second journey information; when the shutter 5 returns to the initial position with the piston rod 2 from the maximum displacement, the sensor second stroke information; specifically, the second stroke information is a retraction stroke L2 of the piston rod 2.
S9: and when the difference value between the first travel information and the second travel information is within a preset range, calculating the extension time and/or the retraction time of the oil cylinder.
Specifically, when detecting, when measuring the extension time, firstly, ensure that the piston rod 2 is located at the initial position in the cylinder body 1 of the fully retracted cylinder, preparing for timing, extending the piston rod 2, moving rightward as shown in fig. 1, synchronously moving the baffle plate 5 along with the piston rod 2 to drive the rotating wheel 4 to rotate anticlockwise, connecting the sensor with the rotating wheel 4, collecting and outputting a first starting signal of the rotating wheel 4, receiving the first starting signal by the detection terminal and starting timing, recording the starting time to be 0, starting to record the revolution of the rotating wheel 4 by the sensor, when the piston rod 2 moves to the maximum stroke position, the baffle plate 5 reaches the maximum displacement along with the maximum displacement, the rotating wheel 4 stops rotating, collecting and outputting the first stopping signal by the sensor, and recording the revolution n1 of the rotating wheel 4, receiving the first stopping signal by the detection terminal and recording the time T1, wherein the value of the T1 is the extension time of the cylinder, and the extension stroke L1=n1×C of the piston rod 2 is the circumference of the rotating wheel 4. When the retraction time is measured, firstly, the piston rod 2 is ensured to fully extend out of the cylinder body 1 of the oil cylinder, the baffle plate 5 is positioned at the maximum displacement position, timing is prepared, the piston rod 2 is contracted and moved leftwards, the baffle plate 5 moves synchronously along with the piston rod 2 to drive the rotating wheel 4 to rotate clockwise, the sensor is connected with the rotating wheel 4, the second starting signal of the rotating wheel 4 is collected and output, the detection terminal receives the second starting signal and starts timing, the recording starting time is 0, the sensor starts recording the revolution of the rotating wheel 4, when the piston rod 2 is fully retracted into the cylinder body 1, the baffle plate 5 returns to the initial position, the rotating wheel 4 stops rotating, the sensor collects and outputs the second stopping signal and the revolution n2 of the rotating wheel 4, the detection terminal receives the second stopping signal and records the time T2, the value of the T2 is the retraction time of the oil cylinder, and the retraction stroke L2=n2×C of the piston rod 2 is the circumference of the rotating wheel 4. In theory, L1 and L2 are equal, by setting the preset range, when the difference between L1 and L2 is within the preset range, the accuracy of the data can be confirmed, thereby confirming the accuracy of the calculated extension time and retraction time of the oil cylinder.
In a preferred embodiment, the detection method further includes the steps of:
s10: and when the difference value between the first travel information and the second travel information exceeds the preset range, acquiring the first travel information and the second travel information again until the difference value between the first travel information and the second travel information is within the preset range. In theory, the first travel information and the second travel information are equal, when the difference value between the first travel information and the second travel information exceeds a preset range, the oil cylinder is not fully stretched in place, and the first travel information and the second travel information are re-measured at the moment and re-acquired until the difference between the first travel information and the second travel information is within the preset range.
In a preferred embodiment, the detection method further includes the steps of:
s11: calculating the travel information of the oil cylinder when the difference between the first travel information and the second travel information is in a preset range; and/or calculating the average extension speed of the oil cylinder; and/or calculate an average retraction speed of the ram. In the present embodiment, when the difference between the first travel information and the second travel information is within the preset range, the accuracy of the measurement data can be ensured. Specifically, the stroke information of the oil cylinder is the stroke L, l= (l1+l2)/2 of the oil cylinder; the average extension speed of the oil cylinder is V1, and V1=L/T1; the average retraction speed of the ram was V2, v2=l/T2. In this embodiment, the average speed of the expansion and contraction of the cylinder may be detected while the expansion and contraction time of the cylinder is detected.
In a preferred embodiment, the detection terminal is connected to the plurality of cylinder expansion time detection devices, and the detection method further includes the steps of:
s12: acquiring an identification of an oil cylinder expansion time detection device;
s13: and the obtained extending time, retracting time, travel information, average extending speed or average retracting speed is corresponding to the oil cylinder stretching time detection device through the mark.
In the embodiment, multiple groups of data can be monitored simultaneously through the detection terminal, so that the working efficiency is improved.
Example 3
The present embodiment provides a detection terminal, including a memory and a processor, where the memory and the processor are communicatively connected to each other, and the memory stores computer instructions, and the processor executes the computer instructions of the detection method provided in embodiment 2.
In the embodiment, the detection terminal can be handheld terminal equipment such as a mobile phone and a tablet personal computer, is convenient to carry and occupies a small space.
Example 4
The present embodiment provides a computer-readable medium having stored thereon a computer program which, when executed by a processor, implements the steps of the detection method provided in embodiment 2.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (10)
1. The utility model provides a hydro-cylinder flexible time detection device which characterized in that includes:
the bracket (3) is suitable for being fixed outside a cylinder body (1) of the oil cylinder;
a rotating wheel (4) rotatably arranged on the bracket (3);
the baffle plate (5) comprises a first connecting part (51) which is suitable for being connected with the end part of a piston rod (2) of the oil cylinder and a second connecting part (52) which is suitable for being connected with the rotating wheel (4), and the baffle plate (5) drives the rotating wheel (4) to rotate when driven by the piston rod (2) to move;
the sensor is connected with the rotating wheel (4) and is used for collecting and outputting a starting signal and a stopping signal of the rotating wheel (4), the sensor is an encoder (6), and the encoder (6) is also used for collecting and outputting revolution information of the rotating wheel (4).
2. The cylinder expansion time detection device according to claim 1, wherein the second connection portion (52) is in frictional contact connection with the rotating wheel (4).
3. The cylinder extension and retraction time detection device according to claim 1, characterized in that the bracket (3) is adapted to be connected to the cylinder (1) by magnetic attraction.
4. The cylinder expansion time detection device according to claim 1, characterized in that the first connection portion (51) is adapted to be connected with an end portion of the piston rod (2) by magnetic attraction.
5. A method for detecting the telescoping time of an oil cylinder, which is used for detecting a terminal, the detecting terminal is connected with at least one oil cylinder telescoping time detecting device according to any one of claims 1-4, and the method is characterized by comprising the following steps:
receiving a first starting signal; when the baffle (5) starts to move along with the piston rod (2) from an initial position, the sensor outputs the first starting signal;
receiving a first stop signal; when the baffle (5) reaches the maximum displacement along with the piston rod (2), the sensor outputs the first stop signal;
calculating the extending time of the oil cylinder according to the first starting signal and the first stopping signal;
receiving a second starting signal; when the baffle (5) is retracted with the piston rod (2) from the maximum displacement position, the sensor outputs the second starting signal;
receiving a second stop signal; when the baffle (5) returns to the initial position along with the piston rod (2) from the maximum displacement, the sensor outputs the second stop signal;
calculating the retraction time of the oil cylinder according to the second starting signal and the second stopping signal;
further comprises:
receiving first journey information; when the baffle (5) reaches the maximum displacement along with the piston rod (2), the sensor outputs the first travel information;
receiving second journey information; when the baffle (5) returns to the initial position along with the piston rod (2) from the maximum displacement, the sensor outputs the second travel information;
and when the difference value between the first travel information and the second travel information is within a preset range, calculating the extending time and/or the retracting time of the oil cylinder.
6. The method of detecting according to claim 5, further comprising: and when the difference value between the first travel information and the second travel information exceeds a preset range, re-acquiring the first travel information and the second travel information until the difference value between the first travel information and the second travel information is within the preset range.
7. The method of detecting according to claim 5, further comprising: when the difference between the first travel information and the second travel information is within a preset range,
calculating the travel information of the oil cylinder; and/or
Calculating the average extending speed of the oil cylinder; and/or
And calculating the average retraction speed of the oil cylinder.
8. The method according to claim 7, wherein the detection terminal is connected to a plurality of the cylinder expansion time detection devices, the detection method further comprising:
acquiring an identification of an oil cylinder expansion time detection device;
and the obtained extending time, retracting time, travel information, average extending speed or average retracting speed is corresponding to the oil cylinder stretching time detection device through the mark.
9. A test terminal comprising a memory and a processor, said memory and said processor being communicatively coupled to each other, said memory having stored therein computer instructions for executing the computer instructions of the test method of any of claims 5-8.
10. A computer readable medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, implements the steps of the detection method according to any one of claims 5-8.
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