CN111691493A - Hydraulic oil cylinder monitoring device, excavator and method - Google Patents
Hydraulic oil cylinder monitoring device, excavator and method Download PDFInfo
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- CN111691493A CN111691493A CN202010690051.7A CN202010690051A CN111691493A CN 111691493 A CN111691493 A CN 111691493A CN 202010690051 A CN202010690051 A CN 202010690051A CN 111691493 A CN111691493 A CN 111691493A
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- 239000010720 hydraulic oil Substances 0.000 title claims abstract description 87
- 238000012806 monitoring device Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000006073 displacement reaction Methods 0.000 claims abstract description 199
- 230000033001 locomotion Effects 0.000 claims abstract description 124
- 238000012544 monitoring process Methods 0.000 claims abstract description 23
- 239000003921 oil Substances 0.000 claims description 18
- 238000010586 diagram Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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- 238000013024 troubleshooting Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2203—Arrangements for controlling the attitude of actuators, e.g. speed, floating function
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/26—Indicating devices
- E02F9/264—Sensors and their calibration for indicating the position of the work tool
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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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- 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
- F15B2215/00—Fluid-actuated devices for displacing a member from one position to another
- F15B2215/30—Constructional details thereof
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- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Component Parts Of Construction Machinery (AREA)
Abstract
The application provides a hydraulic cylinder monitoring device, an excavator and a method, and relates to the technical field of hydraulic pressure. The hydraulic cylinder monitoring device comprises: a plurality of displacement sensors, and a controller; the displacement sensors are arranged on the side edge of the front sleeve of the hydraulic oil cylinder; the displacement sensor is used for acquiring movement displacement data of a piston rod of the hydraulic oil cylinder and sending the movement displacement data to the controller, and the movement displacement data carries an identifier of the hydraulic oil cylinder; the controller is used for receiving the motion displacement data; and converting the motion displacement data into motion rates corresponding to the hydraulic oil cylinders by adopting a preset algorithm. By adjusting the mounting position of the displacement sensor and calculating the movement rate of the hydraulic oil cylinder by utilizing the displacement data, the technical problem that the existing hydraulic oil cylinder is easily influenced by actual working conditions during movement rate monitoring is solved, and the accuracy of the movement rate monitoring of the hydraulic oil cylinder is improved.
Description
Technical Field
The application relates to the technical field of hydraulic pressure, in particular to a hydraulic cylinder monitoring device, an excavator and a method.
Background
The hydraulic cylinder, also called hydraulic cylinder, is a hydraulic actuator that converts hydraulic energy into mechanical energy and makes linear reciprocating motion (or swinging motion). Simple structure and reliable operation. When the reciprocating motion is realized by the hydraulic cylinder, a speed reducing device can be omitted, no transmission gap exists, and the motion is stable, so that the hydraulic cylinder is widely applied to hydraulic systems of various machines.
The hydraulic oil cylinder is used as an important component of the excavator and comprises a movable arm oil cylinder, a bucket rod oil cylinder and a bucket oil cylinder, and the measurement of the movement rate of the hydraulic oil cylinder has important significance for performance test of the excavator, establishment of a standardized operation method and the like.
The existing hydraulic oil cylinder movement rate monitoring is mainly carried out through hydraulic oil flow, but the excavator hydraulic system can often vibrate, generate heat, leak oil, pollute oil and the like under the actual working condition, so that the deviation of a test result and an actual result is large.
Disclosure of Invention
In order to solve the problems in the prior art, the application provides a hydraulic cylinder monitoring device, an excavator and a method.
In order to achieve the purpose, the technical scheme adopted by the application is as follows:
the application provides a hydraulic cylinder monitoring devices includes: a plurality of displacement sensors, and a controller; the displacement sensors are arranged on the side edge of the front sleeve of the hydraulic oil cylinder;
the displacement sensor is used for acquiring movement displacement data of a piston rod of the hydraulic oil cylinder and sending the movement displacement data to the controller, and the movement displacement data carries an identifier of the hydraulic oil cylinder;
the controller is used for receiving the motion displacement data; and converting the motion displacement data into motion rates corresponding to the hydraulic oil cylinders by adopting a preset algorithm.
Optionally, the controller is configured to obtain a displacement difference between a current displacement and a previous displacement of the plurality of displacement sensors according to the motion displacement data, and calculate a motion rate corresponding to each of the hydraulic cylinders according to a time difference corresponding to the displacement difference divided by the displacement difference.
Optionally, the apparatus further comprises: a display screen; the display screen is connected with the controller.
Optionally, the apparatus further comprises: an indicator light; the indicator light is connected with the controller.
Optionally, the apparatus further comprises: a memory; the memory is connected with the controller.
A second aspect of the present application provides an excavator, comprising: a hydraulic cylinder, the hydraulic cylinder monitoring apparatus of the first aspect;
a displacement sensor of the device is arranged on the side edge of a front sleeve of the hydraulic oil cylinder.
Optionally, the hydraulic ram comprises: a boom cylinder, a stick cylinder and a bucket cylinder; the number of the plurality of displacement sensors is 3;
and the 3 displacement sensors are respectively arranged on the side edges of the front sleeves of the movable arm oil cylinder, the arm oil cylinder and the bucket oil cylinder.
A third aspect of the present application provides a hydraulic cylinder monitoring method, which is applied to the hydraulic cylinder monitoring apparatus of the first aspect, and the method includes:
the displacement sensor acquires movement displacement data of a piston rod of the hydraulic oil cylinder and sends the movement displacement data to the controller, and the movement displacement data carries an identifier of the hydraulic oil cylinder;
the controller receives the motion displacement data;
and the controller converts the motion displacement data into motion rates corresponding to the hydraulic oil cylinders by adopting a preset algorithm.
Optionally, the apparatus further comprises: a display screen; the display screen is connected with the controller;
the display screen is used for acquiring and displaying the movement rate calculated by the controller.
Optionally, the apparatus further comprises: an indicator light;
if the controller does not receive the movement displacement data of at least one of the displacement sensors within a preset time period, sending the identification of the displacement sensor which does not receive the movement displacement data to the display screen, and controlling to light the indicator light.
In the hydraulic cylinder monitoring device, the excavator and the method provided by the application, the hydraulic cylinder monitoring device comprises: a plurality of displacement sensors, and a controller; the displacement sensors are arranged on the side edge of the front sleeve of the hydraulic oil cylinder; the displacement sensor is used for acquiring movement displacement data of a piston rod of the hydraulic oil cylinder and sending the movement displacement data to the controller, and the movement displacement data carries an identifier of the hydraulic oil cylinder; the controller is used for receiving the motion displacement data; and converting the motion displacement data into motion rates corresponding to the hydraulic oil cylinders by adopting a preset algorithm. By adjusting the mounting position of the displacement sensor and calculating the movement rate of the hydraulic oil cylinder by utilizing the displacement data, the technical problem that the existing hydraulic oil cylinder is easily influenced by actual working conditions during movement rate monitoring is solved, and the accuracy of the movement rate monitoring of the hydraulic oil cylinder is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic structural diagram of a hydraulic oil cylinder monitoring device provided in an embodiment of the present application;
FIG. 2 is a schematic structural diagram of a hydraulic cylinder monitoring apparatus according to another embodiment of the present disclosure;
FIG. 3 is a schematic structural diagram of a hydraulic cylinder monitoring apparatus according to another embodiment of the present disclosure;
FIG. 4 is a schematic structural diagram of a hydraulic cylinder monitoring apparatus according to another embodiment of the present disclosure;
fig. 5 is a schematic flow chart of a hydraulic cylinder monitoring method according to an embodiment of the present disclosure.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it should be noted that if the terms "upper", "lower", "inner", "outer", etc. are used to indicate an orientation or positional relationship based on that shown in the drawings or that the application product is usually placed in use, the description is merely for convenience and simplicity, and it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore should not be construed as limiting the present application.
Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
It should be noted that the features of the embodiments of the present application may be combined with each other without conflict.
The hydraulic oil cylinder is an important component of the excavator and can comprise a movable arm oil cylinder, a bucket rod oil cylinder, a bucket oil cylinder and the like, and the measurement of the movement rate of the hydraulic oil cylinder has important significance for performance test of the excavator, establishment of a standardized operation method and the like. The existing hydraulic oil cylinder movement rate monitoring is mainly calculated through hydraulic oil flow, and comprises the following steps:
wherein Q is hydraulic oil flow (L/min); a is the area (cm) of the hydraulic oil cylinder2) (ii) a D is the effective piston diameter (cm) of the hydraulic oil cylinder.
However, the excavator hydraulic system often has the phenomena of vibration, heating, oil leakage, oil pollution and the like under the actual working condition, so that the deviation between the test result and the actual result is large.
In order to solve the above technical problem, the present application provides a hydraulic cylinder monitoring device, as shown in fig. 1, the device includes: a plurality of displacement sensors 01, and 1 controller 02;
in fig. 1, 3 displacement sensors are illustrated, and the 3 displacement sensors 01 are mounted on the side of the front sleeve of the hydraulic oil cylinder. It should be noted that the number of the displacement sensors 01 may be any integer greater than 0, and in the embodiment of the present application, the number of the displacement sensors 01 is not limited.
And the displacement sensor 01 is used for acquiring the movement displacement data of the piston rod of the hydraulic oil cylinder and sending the movement displacement data to the controller 02, wherein the movement displacement data carries the identification of the hydraulic oil cylinder.
A controller 02 for receiving motion displacement data; and converting the motion displacement data into motion rates corresponding to the hydraulic oil cylinders by adopting a preset algorithm.
Wherein, the displacement sensor 01 is also called as a linear sensor, and can have: inductive displacement sensors, capacitive displacement sensors, photoelectric displacement sensors, ultrasonic displacement sensors, hall displacement sensors, and the like. It should be noted that, in the embodiment of the present application, there is no limitation on the specific type of the displacement sensor 01.
Specifically, in this application embodiment, all be connected with at least one displacement sensor 01 on every hydraulic cylinder, displacement sensor 01 all connects at hydraulic cylinder's preceding cover cylinder side for obtain the motion displacement data of corresponding hydraulic cylinder piston rod.
It should be noted that, the piston rod is used as a motion executing part of the hydraulic cylinder and is a connecting component for supporting the piston to do work, and the motion is frequent and the technical requirement is high. In the embodiment of the application, the movement rate of the piston corresponding to the hydraulic oil cylinder can reflect the movement rate of the hydraulic oil cylinder to a certain extent. In order to distinguish which hydraulic cylinder's displacement data the displacement data that displacement sensor 01 gathered corresponds, in the embodiment of the present application, displacement sensor 01 still carries the sign that corresponds hydraulic cylinder when carrying out data transmission. For example, the identification may be the number of the hydraulic cylinders, all of which are numbered, i.e., 1#, 2#, 3#, and the displacement sensor will add the corresponding hydraulic cylinder number before each set of data is transmitted. The above identifiers of the hydraulic oil cylinders are only exemplary, the identifiers of the specific hydraulic oil cylinders are not limited to this, and the identifiers of the hydraulic oil cylinders may also be codes, unit names, and the like, and the embodiments of the present application are not limited.
It will be appreciated that by identifying all hydraulic rams and having all displacement sensors 01 add the corresponding hydraulic ram identification to each set of data transmitted, the corresponding rate of movement of each hydraulic ram can be clearly recorded and resolved, avoiding confusion of the data.
It should be noted that in the embodiment of the present application, the movement rate of the hydraulic oil cylinder is used to measure the operability and the construction efficiency of the moving machine on which the hydraulic oil cylinder is installed. Specifically, the moving machine may be an excavator, a winch, a bulldozer, a road finisher, or the like, and in the embodiment of the present application, the type of the moving machine is not particularly limited.
The controller 02 is used for being connected with the displacement sensor 01 and acquiring the movement displacement data of the hydraulic oil cylinder, which is acquired by the displacement sensor 01.
In the embodiment of the present application, each displacement sensor 01 may be connected to one controller 02, and data acquisition and calculation may be performed by a plurality of controllers 02. All the displacement sensors 01 may be connected to one controller 02, and data acquisition and calculation may be performed by the same controller 02. The specific number of the controllers 02 is not limited in the embodiments of the present application.
In the hydraulic cylinder monitoring devices that this application embodiment provided, include: a plurality of displacement sensors 01 and a controller 02; the displacement sensors 01 are arranged on the side edge of the front sleeve of the hydraulic oil cylinder; the displacement sensor 01 is used for acquiring movement displacement data of a piston rod of the hydraulic oil cylinder and sending the movement displacement data to the controller 02, wherein the movement displacement data carries an identifier of the hydraulic oil cylinder; the controller 02 is used for receiving the motion displacement data; and converting the motion displacement data into motion rates corresponding to the hydraulic oil cylinders by adopting a preset algorithm. By adjusting the mounting position of the displacement sensor and calculating the movement rate of the hydraulic oil cylinder by utilizing the displacement data, the technical problem that the existing hydraulic oil cylinder is easily influenced by actual working conditions during movement rate monitoring is solved, and the accuracy of the movement rate monitoring of the hydraulic oil cylinder is improved.
Optionally, the controller 02 is configured to obtain a displacement difference between a current displacement and a previous displacement of the plurality of displacement sensors according to the movement displacement data, and calculate a movement rate corresponding to each hydraulic cylinder according to a time difference corresponding to the displacement difference divided by the displacement difference.
Note that, in the present embodiment, data processing and calculation are performed by one controller 02. Specifically, one controller 02 is connected to all the displacement sensors 01, and the motion data of all the displacement sensors 01 is acquired.
The displacement sensor 01 can acquire motion data once every fixed time interval, in the embodiment of the application, the controller 02 can acquire the displacement difference between the current displacement acquired by the displacement sensor 01 and the previous displacement, and the displacement difference is divided by the time interval corresponding to the two displacement differences to calculate the motion rate corresponding to the hydraulic oil cylinder. It should be noted that, in the embodiment of the present application, the setting of the time interval may be set according to an application scenario and an application requirement, and the embodiment of the present application is not limited by this way.
As shown in fig. 2, in some embodiments of the present application, the apparatus further comprises: a display screen 03; the display 03 is connected to the controller 02.
The display 03 may be: a picture-tube display (CRT display) and a liquid crystal display (LCD display), and in the embodiment of the present application, the kind of the display 03 is not limited.
In the embodiment of the application, the controller 02 is connected with the display screen 03 and is used for displaying the movement rate of each hydraulic oil cylinder and the identification of the hydraulic oil cylinder corresponding to the faulty displacement sensor 01.
Illustratively, the hydraulic oil cylinders comprise 3 hydraulic oil cylinders, 1#, 2#, and 3#, and when the controller 02 does not receive the displacement data of the displacement sensor 01 on the 1# oil cylinder for a preset time, the failure of the sensor 1# is displayed on the display screen; when the controller does not receive the displacement data of the displacement sensor 01 on the 2# oil cylinder after exceeding the preset time, the fault of the sensor 2# is displayed on the display screen, and the like.
It can be understood that, in this application embodiment, through the displacement sensor 01 serial number that shows the trouble on display screen 03, can realize the quick trouble self-checking of device, whole intelligent degree that has promoted the device. In addition, the working personnel can quickly know the fault and carry out troubleshooting or maintenance and the like.
As shown in fig. 3, in some embodiments of the present application, the apparatus further comprises: an indicator lamp 04; the indicator lamp 04 is connected to the controller 02.
And the indicator lamp 04 is used for detecting whether the running state of the whole hydraulic oil cylinder monitoring device is normal or not. In the embodiment of the application, the indicator lamp 04 is connected with the controller 02, and when the controller 02 cannot acquire the displacement data of the displacement sensor 01, or the controller 02 does not receive the displacement data of the displacement sensor 01 at a predetermined time point, or the controller 02 does not receive the displacement data of the displacement sensor 01 for a time period exceeding a preset time period, the controller 02 controls the indicator lamp 04 to be turned on to warn an operator that the device is abnormal. Each displacement sensor 01 may correspond to one indicator lamp 04, and when a certain displacement sensor 01 is considered to be abnormal, the corresponding indicator lamp 04 is controlled to be turned on.
In the embodiment, the warning device is not limited to the indicator lamp 04, and may be a buzzer, a warning sound, or the like as long as the warning effect is achieved.
Fig. 4 is a hydraulic cylinder monitoring apparatus according to another embodiment of the present application, as shown in fig. 4, the apparatus further includes: a memory 05; the memory 05 is connected to the controller 02.
It should be noted that, in this embodiment of the application, the controller 02 is further connected to a memory 05, and is configured to store the motion displacement data acquired by the displacement sensor 01, and when historical motion displacement data needs to be queried, the motion displacement data in the memory 05 may be called by the controller 02, and the motion displacement data that needs to be queried is displayed on the display screen 03.
It can be understood that, by connecting the memory 05 to the controller 02, the motion data acquired by the displacement sensor 01 within a certain time range can be retained, thereby avoiding data loss or data coverage.
An embodiment of the present application provides an excavator, includes: hydraulic cylinder, hydraulic cylinder monitoring devices of the embodiment.
A displacement sensor of the device is arranged on the side edge of a front sleeve of the hydraulic oil cylinder.
The hydraulic oil cylinder monitoring device can be connected to a starting circuit of the excavator, and the starting circuit of the excavator supplies power. When the excavator is started, the device is started at the same time.
It can be understood that, in the embodiment of the application, the monitoring device is connected to the starting circuit of the excavator, so that when the excavator is started, the monitoring device is started simultaneously, and therefore the motion information of the hydraulic oil cylinder on the excavator can be collected in real time.
Optionally, the hydraulic ram comprises: a boom cylinder, a stick cylinder and a bucket cylinder; the number of the plurality of displacement sensors is at least 3;
wherein, take 3 as an example, 3 displacement sensors are respectively installed at the front sleeve side edges of the movable arm cylinder, the arm cylinder and the bucket cylinder. The number of the displacement sensors may be 6, 9 or other numbers, the plurality of displacement sensors are distributed on the boom cylinder, the arm cylinder and the bucket cylinder, and the number of the displacement sensors on each cylinder is the same or different, which is not limited herein.
The excavator that this application embodiment provided includes: the hydraulic cylinder and the hydraulic cylinder monitoring device of the embodiment are characterized in that a displacement sensor of the monitoring device is arranged on the side edge of a front sleeve of the hydraulic cylinder. The monitoring device is arranged on the side edge of the front sleeve of the hydraulic oil cylinder of the excavator, so that the technical problem that the current movement rate of the hydraulic oil cylinder of the excavator is easily influenced by actual working conditions during monitoring is solved, and the accuracy of monitoring the movement rate of the hydraulic oil cylinder of the excavator is improved.
The embodiment of the application provides a hydraulic cylinder monitoring method, which is applied to the hydraulic cylinder monitoring device in the embodiment, and as shown in fig. 5, the method comprises the following steps:
s501, the displacement sensor obtains movement displacement data of a piston rod of the hydraulic oil cylinder and sends the movement displacement data to the controller, and the movement displacement data carries an identifier of the hydraulic oil cylinder.
It should be noted that, in the embodiment of the present application, the movement rate of the piston corresponding to the hydraulic cylinder may reflect the movement rate of the hydraulic cylinder to a certain extent.
In order to distinguish which hydraulic cylinder's that the displacement data that displacement sensor gathered corresponds displacement data, in this application embodiment, displacement sensor still carries the sign that corresponds hydraulic cylinder when carrying out data transmission.
And S502, the controller receives the motion displacement data.
In the embodiment of the application, the controller is connected with all the displacement sensors and receives the motion displacement data of all the displacement sensors.
And S503, converting the motion displacement data into the motion rate corresponding to each hydraulic oil cylinder by the controller by adopting a preset algorithm.
Optionally, the controller obtains a displacement difference between the current displacement and the previous displacement of the plurality of displacement sensors according to the movement displacement data, and calculates the movement rate corresponding to each hydraulic cylinder according to the time difference corresponding to the displacement difference divided by the displacement difference.
Optionally, in an embodiment of the present application, the apparatus further includes: a display screen; the display screen is connected with the controller;
and the display screen is used for acquiring and displaying the movement rate calculated by the controller.
The controller may calculate the movement rate and then send the movement rate to the display screen for display.
Optionally, in an embodiment of the present application, the apparatus further includes: the alarm device includes, for example, an indicator lamp.
If the controller does not receive the movement displacement data of at least one of the displacement sensors within a preset time period, the controller sends the identification of the displacement sensor which does not receive the movement displacement data to the display screen, and controls to light the indicator lamp.
It should be noted that, if the controller does not receive the motion displacement data of a certain displacement sensor for more than a preset time period, it may determine that the motion displacement data is faulty, for example, disconnection or other technical problems occur. And the prompt can be performed through an indicator lamp and a display screen.
Each displacement sensor can correspond to one indicator light, and when one displacement sensor is considered to be abnormal, the corresponding indicator light is controlled to be turned on.
In the hydraulic oil cylinder monitoring method provided by the embodiment of the application, the displacement sensor acquires movement displacement data of a piston rod of the hydraulic oil cylinder and sends the movement displacement data to the controller, and the movement displacement data carries an identifier of the hydraulic oil cylinder; the controller receives the motion displacement data; and the controller converts the motion displacement data into motion rates corresponding to the hydraulic oil cylinders by adopting a preset algorithm. And acquiring displacement data of piston rods of the corresponding hydraulic oil cylinders through the displacement sensors, and converting the displacement data into the movement rate corresponding to each hydraulic oil cylinder. The technical problem that the existing hydraulic oil cylinder is easily influenced by actual working conditions when the movement rate of the hydraulic oil cylinder is monitored is solved, and the accuracy of monitoring the movement rate of the hydraulic oil cylinder is improved.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A hydraulic cylinder monitoring device, comprising: a plurality of displacement sensors, and a controller; the displacement sensors are arranged on the side edge of the front sleeve of the hydraulic oil cylinder;
the displacement sensor is used for acquiring movement displacement data of a piston rod of the hydraulic oil cylinder and sending the movement displacement data to the controller, and the movement displacement data carries an identifier of the hydraulic oil cylinder;
the controller is used for receiving the motion displacement data; and converting the motion displacement data into motion rates corresponding to the hydraulic oil cylinders by adopting a preset algorithm.
2. The apparatus of claim 1, wherein the controller is configured to obtain a displacement difference between a current displacement and a previous displacement of the plurality of displacement sensors according to the motion displacement data, and calculate the motion rate corresponding to each of the hydraulic cylinders according to a time difference corresponding to the displacement difference divided by the displacement difference.
3. The apparatus of claim 1 or 2, further comprising: a display screen; the display screen is connected with the controller.
4. The apparatus of claim 1, further comprising: an indicator light; the indicator light is connected with the controller.
5. The apparatus of claim 1, further comprising: a memory; the memory is connected with the controller.
6. An excavator, comprising: a hydraulic ram, a hydraulic ram monitoring apparatus as claimed in any one of claims 1 to 5;
a displacement sensor of the device is arranged on the side edge of a front sleeve of the hydraulic oil cylinder.
7. The excavator of claim 6 wherein the hydraulic ram comprises: a boom cylinder, a stick cylinder and a bucket cylinder; the number of the plurality of displacement sensors is 3;
and the 3 displacement sensors are respectively arranged on the side edges of the front sleeves of the movable arm oil cylinder, the arm oil cylinder and the bucket oil cylinder.
8. A hydraulic cylinder monitoring method, applied to a hydraulic cylinder monitoring device according to any one of claims 1 to 5, the method comprising:
the displacement sensor acquires movement displacement data of a piston rod of the hydraulic oil cylinder and sends the movement displacement data to the controller, and the movement displacement data carries an identifier of the hydraulic oil cylinder;
the controller receives the motion displacement data;
and the controller converts the motion displacement data into motion rates corresponding to the hydraulic oil cylinders by adopting a preset algorithm.
9. The method of claim 8, wherein the apparatus further comprises: a display screen; the display screen is connected with the controller;
the display screen is used for acquiring and displaying the movement rate calculated by the controller.
10. The method of claim 9, wherein the apparatus further comprises: an indicator light;
if the controller does not receive the movement displacement data of at least one of the displacement sensors within a preset time period, sending the identification of the displacement sensor which does not receive the movement displacement data to the display screen, and controlling to light the indicator light.
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