CN113916359A - Vibration switch debugging method and device - Google Patents
Vibration switch debugging method and device Download PDFInfo
- Publication number
- CN113916359A CN113916359A CN202111087639.4A CN202111087639A CN113916359A CN 113916359 A CN113916359 A CN 113916359A CN 202111087639 A CN202111087639 A CN 202111087639A CN 113916359 A CN113916359 A CN 113916359A
- Authority
- CN
- China
- Prior art keywords
- weight
- vibration switch
- determining
- minimum
- swing rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 59
- 238000009434 installation Methods 0.000 claims abstract description 97
- 230000001133 acceleration Effects 0.000 claims abstract description 89
- 238000005452 bending Methods 0.000 claims abstract description 69
- 238000004364 calculation method Methods 0.000 claims abstract description 21
- 238000004088 simulation Methods 0.000 claims abstract description 15
- 230000001960 triggered effect Effects 0.000 claims description 46
- 239000000725 suspension Substances 0.000 claims description 43
- 230000004044 response Effects 0.000 claims description 9
- 230000005484 gravity Effects 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 11
- 238000013016 damping Methods 0.000 description 7
- 238000004458 analytical method Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 238000003908 quality control method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000012031 short term test Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The invention provides a vibration switch debugging method and device, which can accurately debug a vibration switch aiming at a preset acceleration limit value. The method comprises the following steps: applying external force to a swing rod in a vibration switch for simulation triggering, and determining the bending radius of the swing rod; hanging weights on the oscillating bar, and performing simulated triggering by adjusting the weight and the hanging position of the weights to determine the minimum triggering moment of the vibration switch; and calculating and determining the installation weight and the installation height corresponding to the preset acceleration limit value according to the preset acceleration limit value and the minimum trigger moment, and debugging and installing the heavy block according to the installation height. The device comprises: the device comprises a first simulation trigger module, a bending radius calculation module, a second simulation trigger module, a trigger moment calculation module, a debugging calculation module and a debugging installation module.
Description
Technical Field
The disclosure relates to the technical field of wind power generation, in particular to a method and a device for debugging a vibration switch.
Background
In recent years, in order to improve the generated energy of a wind generating set, the single-machine capacity of the wind generating set is increased, and along with the fact that blades are longer and longer, a tower barrel is higher and higher, the low-frequency shaking of the wind generating set and the tower barrel causes more and more accidents of wind turbine tower falling, and the swing amplitude of the tower barrel needs to be monitored.
At present, the fan generator sets are all provided with vibration switches to detect low-frequency shaking of the wind generator sets, when the swing amplitude of a tower barrel is maximum, the acceleration received by a weight of the vibration switches is maximum, the acceleration exceeds a limit value, the vibration switches act to trigger a safety chain to stop, and unit safety is guaranteed in time. In practical application, the model selection and debugging method of the vibration switch depends on field operation experience or acceleration experiment table test, no theoretical calculation support exists, and the vibration switch is difficult to be accurately debugged.
Disclosure of Invention
In view of this, the present disclosure aims to provide a method and an apparatus for debugging a vibration switch, which can perform accurate debugging on the vibration switch of a wind turbine generator.
In view of the above, in a first aspect, the present disclosure provides a method for debugging a vibration switch, the method including:
horizontally setting the vibration switch, applying external force to different positions of a swing rod in the vibration switch to perform simulated triggering, and determining the minimum swing angle and the maximum swing angle of the swing rod during triggering;
calculating and determining the bending radius of the swing rod according to the minimum swing angle and the maximum swing angle;
hanging weights on the oscillating bar, performing simulated triggering by adjusting the weight and the hanging position of the weights, and determining the weight and the hanging position of the weights during triggering;
calculating and determining the minimum trigger moment of the vibration switch according to the bending radius, the weight of the weight and the hanging position of the weight;
determining a preset acceleration limit value of the vibration switch, and calculating and determining the installation weight and the installation height corresponding to the preset acceleration limit value according to the preset acceleration limit value and the minimum trigger moment;
and selecting a heavy block corresponding to the installation weight, and debugging and installing the heavy block according to the installation height.
Optionally, the applying external forces to different positions of the swing link in the vibration switch to perform analog triggering, determining the minimum swing angle and the maximum swing angle of the swing link during triggering, further includes:
applying external force to the bottom end of the swing rod until the vibration switch is triggered, and determining a first offset distance of the top end of the swing rod relative to an initial position during triggering;
determining the minimum swing angle according to the first offset distance;
applying external force to the top end of the swing rod until the vibration switch is triggered, and determining a second offset distance of the top end of the swing rod relative to the initial position during triggering;
and determining the maximum swing angle according to the second offset distance.
Optionally, the determining the minimum swing angle according to the first offset distance further includes:
θ1＝arcsin(b/L)
wherein ,θ1Representing the minimum swing angle, b representing the first offset distance, and L representing the total length of the swing link;
the determining the maximum swing angle according to the second offset distance further includes:
θ2＝arcsin(c/d)
wherein ,θ2Represents the maximum swing angle, c represents the second offset distance, and d represents the distance between the top end and the bottom end at the time of triggering.
Optionally, the determining a bending radius of the swing link according to the minimum swing angle and the maximum swing angle by calculation further includes:
the bending radius of the swing rod is as follows:
R＝(d/2)/sin(θ2-θ1)
wherein R represents the bend radius.
Optionally, the determining a minimum trigger moment of the vibration switch by calculating according to the bending radius, the weight of the weight, and the weight suspension position further includes:
calculating and determining the suspension swing angle of the swing rod according to the bending radius and the weight suspension position:
θ3＝Hf/2R+θ1
wherein ,θ3Representing said suspension swing angle, HfRepresenting the weight suspension distance, R representing the bending radius, theta1Representing the minimum swing angle;
the weight suspension distance refers to the distance between the weight suspension position on the swing rod and the bottom end of the swing rod;
determining the spatial distance S between the weight suspension position and the bottom endf：
Sf＝2R sin(Hf/2R)
Calculating and determining the minimum trigger moment according to the weight of the weight, the suspension swing angle and the space distance:
Mmin＝mfg*Sfcosθ3
wherein ,MminRepresenting said minimum triggering moment, mfRepresents the weight of the weight, and g represents the acceleration of gravity.
Optionally, the calculating and determining the installation weight and the installation height corresponding to the preset acceleration limit according to the preset acceleration limit and the minimum trigger torque further includes:
selecting one of a plurality of selectable weights of the weight as the installation weight;
the moment when the vibration switch is triggered after the weight is installed is as follows:
M＝Mmin＝(macosθ+mgsinθ)*2Rsin(H/2R)
wherein M represents the moment when the vibration switch is triggered after being installed with the weight, MminRepresenting the minimum trigger moment, m representing the installation weight, a representing the preset acceleration limit, g representing a gravitational acceleration, R representing the bending radius, and H representing the installation height;
wherein θ represents a trigger swing angle when the vibration switch is triggered after being installed with the weight;
θ＝H/2R+θ1
wherein ,θ1Representing the minimum swing angle;
calculating and determining the installation height according to the installation weight, the minimum trigger moment and the preset acceleration limit value:
wherein ,
wherein β ═ arctan (a/g).
Optionally, the calculating and determining the installation weight and the installation height corresponding to the preset acceleration limit according to the preset acceleration limit and the minimum trigger torque further includes:
selecting a distance from the bottom end of the swing rod as the installation height;
the moment when the vibration switch is triggered after the weight is installed is as follows:
M＝Mmin＝(macosθ+mgsinθ)*2Rsin(H/2R)
wherein M represents the moment when the vibration switch is triggered after being installed with the weight, MminRepresenting the minimum trigger moment, m representing the installation weight, a representing the preset acceleration limit, g representing a gravitational acceleration, R representing the bending radius, and H representing the installation height;
wherein θ represents a trigger swing angle when the vibration switch is triggered after being installed with the weight;
θ＝H/2R+θ1
wherein ,θ1Representing the minimum swing angle;
calculating and determining the installation weight according to the installation height, the minimum trigger moment and the preset acceleration limit value as follows:
optionally, the method further includes, when external forces are applied to different positions of the swing link in the vibration switch to perform analog triggering:
respectively applying external force to the swing rod from a plurality of force application directions relative to the swing rod to perform simulation triggering, and determining a plurality of bending radiuses corresponding to the plurality of force application directions;
comparing the plurality of bending radii to determine whether the plurality of bending radii are consistent;
and in response to the plurality of bending radii not being consistent, determining that the vibration switch is unqualified.
Optionally, after the installation height is determined by calculation according to the installation weight, the minimum trigger torque, and the preset acceleration limit, the method further includes:
comparing the installation height with the total length of the swing rod;
in response to the fact that the installation height is larger than or equal to the total length of the swing rod, reselecting one optional weight, and calculating the installation height corresponding to the optional weight;
and in response to the fact that all the installation heights corresponding to the optional weights are larger than or equal to the total length of the swing rod, judging that the vibration switch is unqualified.
Optionally, the preset acceleration limit value is determined according to the wind turbine generator set corresponding to the vibration switch and the safety acceleration limit value of the low-frequency swing of the tower drum;
and the safe acceleration limit value is calculated and determined according to the complete machine loads of the wind turbine generator and the tower barrel.
In a second aspect, the present disclosure provides a commissioning apparatus for a vibration switch. The device comprises:
the first analog trigger module is configured to horizontally set the vibration switch, apply external force to different positions of a swing rod in the vibration switch for analog triggering, and determine a minimum swing angle and a maximum swing angle of the swing rod during triggering;
a bending radius calculation module configured to calculate and determine a bending radius of the swing link according to the minimum swing angle and the maximum swing angle;
the second simulation trigger module is configured to suspend a weight on the swing rod, perform simulation trigger by adjusting the weight and the suspension position of the weight, and determine the weight and the suspension position of the weight during trigger;
a trigger moment calculation module configured to calculate and determine a minimum trigger moment of the vibration switch according to the bending radius, the weight of the weight and the weight suspension position;
the debugging calculation module is configured to determine a preset acceleration limit value of the vibration switch, and calculate and determine the installation weight and the installation height corresponding to the preset acceleration limit value according to the preset acceleration limit value and the minimum trigger moment;
and the debugging and installing module is configured to select the vibration switch weight corresponding to the installation weight and debug and install the vibration switch weight according to the installation height.
From the above, it can be seen that the method and the apparatus for debugging a vibration switch provided by the present disclosure have the following beneficial technical effects:
(1) exert external force through the pendulum rod to vibration switch and simulate the bending radius who triggers the definite pendulum rod, based on bending radius simulates through hanging the weight and triggers required minimum trigger moment when confirming vibration switch triggers to invariable calculation according to vibration switch trigger moment confirms with installation weight and the mounting height that predetermines the acceleration limit value and correspond, debug the installation to vibration switch according to this, can guarantee to do the acceleration accurate control when vibration switch triggers acceleration limit value predetermines, realizes the accurate debugging to vibration switch.
(2) External force is exerted to the pendulum rod of vibration switch from a plurality of directions and the bending radius in a plurality of directions that triggers the definite pendulum rod is simulated, carries out quick accurate detection to the pendulum rod in the vibration switch through a plurality of bending radius of contrast, carries out accurate lectotype and quality control to the vibration switch product, will not conform to the product filtering of requirement before formally debugging the vibration switch, can avoid rocking the testing result to wind generating set low frequency and cause the influence.
(3) Confirm the mounting height that corresponds with a plurality of optional weights of pouring weight, compare a plurality of mounting heights and pendulum rod length, see the matching relation to see in the vibration switch pouring weight and pendulum rod length and carry out short-term test, carry out accurate lectotype and quality control to the vibration switch product, will not conform to the product filtering of requirement when debugging vibration switch, avoid rocking the testing result to wind generating set low frequency and cause the influence.
Drawings
In order to more clearly illustrate the technical solutions in the present disclosure or related technologies, the drawings needed to be used in the description of the embodiments or related technologies are briefly introduced below, and it is obvious that the drawings in the following description are only embodiments of the present disclosure, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram illustrating a method for debugging a vibration switch according to an embodiment of the disclosure;
fig. 2 is a schematic diagram of a method for determining a minimum swing angle and a maximum swing angle in a vibration switch debugging method according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram of a vibration switch triggered by applying force to the bottom end of a swing rod in a vibration switch debugging method according to an embodiment of the present disclosure;
fig. 4 is a schematic diagram of a vibration switch triggered by applying force to the top end of a swing rod in a vibration switch debugging method according to an embodiment of the present disclosure;
fig. 5 is a schematic diagram illustrating analysis of a bending radius of a swing link in a method for debugging a vibration switch according to an embodiment of the present disclosure;
fig. 6 is a schematic diagram illustrating a method for determining a minimum trigger torque in a vibration switch debugging method according to an embodiment of the present disclosure;
fig. 7 is a schematic view of a vibration switch triggered by a suspended weight in a vibration switch debugging method according to an embodiment of the present disclosure;
fig. 8 is a schematic view illustrating a force analysis of the weight when the vibration switch is triggered in a method for debugging the vibration switch according to an embodiment of the present disclosure;
fig. 9 is a schematic diagram of a vibration switch debugging device according to an embodiment of the disclosure.
Detailed Description
For the purpose of promoting a better understanding of the objects, aspects and advantages of the present disclosure, reference is made to the following detailed description taken in conjunction with the accompanying drawings.
It is to be noted that technical terms or scientific terms used in the embodiments of the present disclosure should have a general meaning as understood by those having ordinary skill in the art to which the present disclosure belongs, unless otherwise defined. The use of "first," "second," and similar terms in the embodiments of the disclosure is not intended to indicate any order, quantity, or importance, but rather to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
At present, the fan generator sets are all provided with vibration switches to detect low-frequency shaking of the wind generator sets, when the swing amplitude of a tower barrel is maximum, the acceleration received by a weight of the vibration switches is maximum, the acceleration exceeds a limit value, the vibration switches act to trigger a safety chain to stop, and unit safety is guaranteed in time. In practical application, the model selection and the debugging method of the vibration switch both depend on field operation experience or acceleration experiment table test. The acceleration limit value of the vibration switch is influenced by various factors such as weight of the weight, mounting height of the weight, length of a swing rod in the switch, damping coefficient and the like, the difficulty in type selection and debugging operation in an actual application scene is high depending on field operation experience, and the acceleration limit value of the vibration switch cannot be accurately controlled; in each vibration switch, weight of the weight, mounting height of the weight, length of the swing rod in the switch, damping coefficient and the like can be different, and the method for debugging the vibration switch by adopting a large-scale vibration experiment table to simulate a vibration experiment needs to test and debug each vibration switch, so that the method has no universality and practicability and cannot accurately control acceleration limitation of the vibration switch.
In order to solve the technical problem, the present disclosure provides a vibration switch debugging method, in which an external force is applied to a swing rod of a vibration switch to perform analog triggering to determine a bending radius of the swing rod, a weight is suspended to perform analog triggering based on the bending radius to determine a minimum triggering torque required when the vibration switch is triggered, an identity equation related to weight of the weight and mounting height of the weight is determined according to a rule that the triggering torque of the vibration switch is constant, and the mounting weight and the mounting height corresponding to a preset acceleration limit value can be accurately calculated.
In one aspect, embodiments of the present disclosure provide a method for debugging a vibration switch.
As shown in fig. 1, one or more alternative embodiments of the present disclosure provide a method for debugging a vibration switch, including:
s1: and horizontally setting the vibration switch, applying external force to different positions of a swing rod in the vibration switch for simulation triggering, and determining the minimum swing angle and the maximum swing angle of the swing rod during triggering.
S2: and calculating and determining the bending radius of the swing rod according to the minimum swing angle and the maximum swing angle.
The vibration switch comprises a switch main body, a swing rod extending out of the switch main body and a heavy block arranged on the swing rod. For the oscillating movement of the oscillating bar in the oscillating switch, the damping coefficient of the oscillating bar is an important influencing factor. And the damping coefficient can not be directly measured, and the bending radius of the oscillating bar is selected to laterally represent and measure the damping coefficient of the oscillating bar in the vibration switch debugging method.
In some alternative embodiments, the weights may be unloaded first, eliminating the effects of the weights, and the pendulum rod may be analyzed purely. The vibration switch is horizontally arranged, the swing rod is in a horizontal state at the beginning, the minimum swing angle and the maximum swing angle of the swing rod are determined by applying external force to different positions of the swing rod to perform simulation triggering, and then the bending radius of the swing rod is determined according to the difference between the minimum swing angle and the maximum swing angle.
S3: and hanging weights on the oscillating bar, performing simulation triggering by adjusting the weight and the hanging position of the weights, and determining the weight of the weights and the hanging position of the weights when triggering.
S4: and calculating and determining the minimum trigger moment of the vibration switch according to the bending radius, the weight of the weight and the hanging position of the weight.
For the vibration switch, the acceleration limit value is influenced by various factors such as weight of the weight, mounting height of the weight, length of a swing rod in the switch, damping coefficient and the like, and the moment of the vibration switch when being triggered is constant no matter how the factors change.
In some alternative embodiments, the triggering can be simulated by adopting a weight suspension mode, and the stress moment of the vibration switch, namely the minimum triggering moment, can be calculated and determined according to the suspension positions of the weight and the weight during triggering.
S5: and determining a preset acceleration limit value of the vibration switch, and calculating and determining the installation weight and the installation height corresponding to the preset acceleration limit value according to the preset acceleration limit value and the minimum trigger moment.
And the preset acceleration limit value is determined according to the wind turbine generator set corresponding to the vibration switch and the safety acceleration limit value of the low-frequency swing of the tower drum. In order to meet the detection of the vibration switch on the swing amplitude of the wind turbine generator and the tower drum, the preset acceleration limit value of the vibration switch is set to be consistent with the safe acceleration limit value of the low-frequency swing of the wind turbine generator and the tower drum, or the preset acceleration limit value of the vibration switch is set to be slightly smaller than the safe acceleration limit value. And the safe acceleration limit value is calculated and determined according to the complete machine loads of the wind turbine generator and the tower barrel.
After the minimum trigger moment of the vibration switch is determined, the stress condition of the vibration switch fixedly arranged on a main frame of the wind turbine generator is considered. In some optional embodiments, the acceleration of the weight on the swing rod is limited to the preset acceleration limit, and the installation weight and the installation height corresponding to the preset acceleration limit are calculated and determined according to the relation that the moment is constant when the vibration switch is triggered.
S6: and selecting a heavy block corresponding to the installation weight, and debugging and installing the heavy block according to the installation height.
And debugging and installing the vibration switch according to the installation weight and the installation height corresponding to the preset acceleration limit value, so that the acceleration when the vibration switch is triggered can be accurately controlled to be the preset acceleration limit value.
According to the vibration switch debugging method, external force is applied to the swing rod of the vibration switch to simulate and trigger to determine the bending radius of the swing rod, the bending radius is used for simulating and triggering through hanging weights to determine the minimum triggering moment required by the vibration switch when the vibration switch is triggered, the mounting weight and the mounting height corresponding to the preset acceleration limit value are determined according to the constant calculation of the triggering moment of the vibration switch, and therefore the vibration switch is debugged and mounted, and the acceleration when the vibration switch is triggered can be accurately controlled to be the preset acceleration limit value.
As shown in fig. 2, in a method for debugging a vibration switch according to one or more alternative embodiments of the present disclosure, applying an external force to different positions of a rocker in the vibration switch to perform analog triggering, and determining a minimum swing angle and a maximum swing angle of the rocker at the time of triggering, further includes:
s201: and applying external force to the bottom end of the swing rod until the vibration switch is triggered, and determining a first offset distance of the top end of the swing rod relative to the initial position during triggering. The bottom end of the swing rod refers to one end of the swing rod directly connected with the switch main body, and the other end opposite to the swing rod is the top end. In some embodiments, the position of the swing link in different states can be determined by drawing a line along one side of the swing link. The swing rod is at the initial position when no external force is applied.
As shown in fig. 3, the external force is applied to the bottom end until the vibration switch is triggered, and the whole swing link is not bent basically in the process, so that the swing amplitude of the swing link is minimum.
Determining the first offset distance of the tip at the time of triggering. The first offset distance refers to the vertical displacement of the top end of the swing rod compared with the initial position of the swing rod when the force application point is the bottom end of the swing rod and is triggered. As shown in fig. 3, point B represents the bottom end, point T represents the initial position of the top end, point T' represents the position of the top end when the point of application is triggered by the bottom end of the swing link, point B represents the first offset distance, point L represents the total length of the swing link, and point θ1Then represents the offset from said first offsetAway from the corresponding minimum swing angle. The minimum swing angle refers to an included angle (angle TBT') formed by the connection line of the bottom end of the swing rod and the top end of the swing rod and the initial position of the swing rod when the force application point is the bottom end of the swing rod and is triggered.
S202: and determining the minimum swing angle according to the first offset distance.
As shown in fig. 3, there is a relationship between the first offset distance and the minimum swing angle:
sinθ1＝b/L
the minimum swing angle may be determined from the first offset distance:
θ1＝arcsin(b/L)
wherein ,θ1Represents the minimum swing angle, b represents the first offset distance, and L represents the total length of the swing link.
S203: and applying external force to the top end of the swing rod until the vibration switch is triggered, and determining a second offset distance of the top end of the swing rod relative to the initial position during triggering.
As shown in fig. 4, an external force is applied to the top end until the vibration switch is triggered, and in this process, the whole swing rod is bent, and the swing amplitude of the swing rod is the largest.
Determining the second offset distance of the tip at the time of triggering. The second offset distance refers to the vertical displacement of the top end of the swing rod compared with the initial position of the swing rod when the force application point is the top end of the swing rod and is triggered. As shown in fig. 4, point B represents the bottom end, point T represents the initial position of the top end, point T "represents the position of the top end when the point of application is the top end trigger of the swing link, point c represents the second offset distance, point d represents the distance between the top end and the bottom end when triggered, and point θ2The maximum swing angle corresponding to the second offset distance is indicated. The maximum swing angle refers to an included angle (TBT') formed between the connection line of the bottom end of the swing rod and the top end of the swing rod and the initial position of the swing rod when the force application point is the top end of the swing rod and is triggered.
S204: and determining the maximum swing angle according to the second offset distance.
As shown in fig. 4, there is a relationship between the second offset distance and the maximum swing angle:
sinθ2＝c/d
determining the maximum swing angle according to the second offset distance:
θ2＝arcsin(c/d)
wherein ,θ2Represents the maximum swing angle, c represents the second offset distance, and d represents the distance between the top end and the bottom end at the time of triggering.
Fig. 5 is a schematic view illustrating analysis of the bending radius of the swing link. Point B represents the bottom end, point T represents the initial position of the top end, point T 'represents the position of the top end when the force application point is the bottom end trigger of the swing rod, point T' represents the position of the top end when the force application point is the top end trigger of the swing rod, and theta1Representing said minimum swing angle, θ2Representing the maximum swing angle. The center of an arc (arc BT') formed by integrally bending the swing rod corresponds to a circle is a point O, and R represents the bending radius of the swing rod. Wherein, angle O is theta2-θ1。
The relation between the angle O and the bending radius is as follows:
therefore, the bending radius can be determined by calculation according to the minimum swing angle and the maximum swing angle, and the bending radius of the swing rod is as follows:
R＝(d/2)/sin(θ2-θ1)
wherein R represents the bend radius.
In a method for debugging a vibration switch provided in one or more optional embodiments of the present disclosure, when external force is applied to different positions of a rocker in the vibration switch for analog triggering, the method further includes:
and respectively applying external force to the swing rod from a plurality of force application directions relative to the swing rod to perform simulation triggering, and determining a plurality of bending radiuses corresponding to the plurality of force application directions.
In some alternative embodiments, the vibration switch may be fixed on the horizontal operating platform, so that the whole swing rod is also positioned on the horizontal operating platform.
The method comprises the following steps of firstly applying external force on a plurality of positions of the swing rod along the horizontal direction to perform simulation triggering, and determining the bending radius of the swing rod in the first force application direction.
And then, the vibration switch is rotated by a certain angle along the axial direction of the swing rod and then is fixed on the horizontal operation table again, and the external force is applied to the swing rod along the horizontal direction for simulation triggering, so that the bending radius of the swing rod in the second force application direction can be determined.
And the angle between the first force application direction and the second force application direction is the angle for rotating the vibration switch along the axial direction of the swing rod.
By rotating and then fixing the vibration switch a plurality of times in the above-described manner, a plurality of the bending radii corresponding to a plurality of the force application directions can be determined.
Comparing the plurality of bending radii to determine whether the plurality of bending radii are consistent;
and in response to the plurality of bending radii not being consistent, determining that the vibration switch is unqualified.
It should be understood by those skilled in the art that the plurality of bending radii are not uniform, which indicates that the elasticity coefficients of the swing rods in the vibration switch when the swing rods are stressed in different directions are different, and the corresponding damping coefficients of the swing rods in different directions are also different, so that the vibration switch does not meet the requirement of detecting the low-frequency shaking of the wind generating set.
The vibration switch debugging method can be used for rapidly and accurately detecting the swing rod in the vibration switch in such a mode, and products which do not meet requirements are filtered before the vibration switch is formally debugged, so that the influence on the low-frequency shaking detection result of the wind generating set is avoided.
As shown in fig. 6, in a method for debugging a vibration switch provided in one or more alternative embodiments of the present disclosure, the determining a minimum trigger moment of the vibration switch by calculating according to the bending radius, the weight of the weight, and the suspension position of the weight further includes:
s601: and calculating and determining the suspension swing angle of the swing rod according to the bending radius and the weight suspension position.
As shown in FIG. 7, the weight is mfT with weights suspended on the oscillating barfThe vibration switch just triggers at the point.
The suspension swing angle of the swing rod can be determined according to the bending radius and the weight suspension position.
Wherein, the suspension swing angle refers to the bottom B of the swing rod and the upper T of the swing rod when being triggeredfThe included angle (TBT) formed between the connecting line between the points and the initial position of the swing rodf) And (4) an angle. From the weight suspension position TfThe point to the bottom end B of the swing rod is bent to form a section of arc (arc BT) under the influence of the gravity of the weightf) The radius corresponding to the arc is the bend radius R.
The suspension swing angle theta3：
θ3＝Hf/2R+θ1
wherein ,θ3Representing said suspension swing angle, HfRepresenting the weight suspension distance, R representing the bending radius, theta1Representing the minimum swing angle.
Wherein the weight suspension distance is the distance between the weight suspension position on the swing rod and the bottom end of the swing rod, namely the arc BTfArc length of (2).
S602: determining the spatial distance S between the weight hanging position and the bottom end according to the weight hanging positionf。
As shown in fig. 7, the spatial distance SfIs the weight suspension position TfAnd the distance between the point and the point B at the bottom end of the swing rod.
The spatial distance SfComprises the following steps:
Sf＝2R sin(Hf/2R)
s603: calculating and determining the minimum trigger moment according to the weight of the weight, the suspension swing angle and the space distance:
Mmin＝mfg*Sfcosθ3
wherein ,MminRepresenting said minimum triggering moment, mfRepresents the weight of the weight, and g represents the acceleration of gravity.
In commissioning a vibration switch, it may be that a weight of suitable weight has been selected, in which case the weight is a known amount and the particular location of the weight to be commissioned.
In a method for debugging a vibration switch provided in one or more optional embodiments of the present disclosure, the calculating and determining, according to the preset acceleration limit and the minimum trigger torque, an installation weight and an installation height corresponding to the preset acceleration limit, further includes:
selecting one of a plurality of selectable weights of the weight as the installation weight m.
In some optional embodiments, the vibration switch is provided with a plurality of sub-blocks with small weight, when in use, a plurality of sub-blocks are selected from the plurality of sub-blocks to form the weight to be installed on the swing rod, the weights of the weight formed by selecting different sub-blocks are different, and the weights of the selected sub-blocks can be determined according to actual conditions, so that the installation weight of the weight can be determined.
Fig. 8 is a schematic diagram illustrating the force analysis of the weight when the vibration switch is triggered. The vibration switch is vertically arranged during actual work and is fixed on a main rack of an engine room of the wind turbine generator. Point B represents the bottom end, point T represents the initial position of the top end without oscillation, TmThe point represents the installation position of the weight on the swing rod and is the gravity center of the weight, and theta represents the triggering swing angle when the weight is triggered backwards. The triggering swing angle refers to an included angle (TBT) formed between the gravity center of the weight, the connecting line of the bottom end of the swing rod and the initial position of the swing rod during triggeringm) And (4) an angle.
The moment when the vibration switch is triggered after the weight is installed is as follows:
M＝(macosθ+mgsinθ)*2Rsin(H/2R)＝Mmin (1)
wherein M represents the moment when the vibration switch is triggered after being installed with the weight, MminRepresenting the minimum trigger moment, m representing the installation weight, a representing the preset acceleration limit, g representing the gravitational acceleration, R representing the bending radius, and H representing the installation height. The mounting height refers to the mounting position T of the weight on the swing rodmThe distance from the point to the point B at the bottom end of the swing rod is the height of the heavy block relative to the bottom end when the swing rod does not swing. As shown in fig. 8, from the mounting position TmThe point to the bottom end B of the swing rod is bent under the influence of swing to form a section of arc (arc BT)m) The arc length of (a) is H.
From the above equation (1) it can be determined:
in the above formula (1), the trigger swing angle θ:
θ＝H/2R+θ1
wherein ,θ1Representing the minimum swing angle.
The above formula (1) can also be expressed as:
wherein β ═ arc tan (a/g).
From this it can be determined:
and substituting the formula (3) into the formula (2), so that the installation height H can be calculated and determined according to the installation weight, the minimum trigger moment and the preset acceleration limit value.
In one or more optional embodiments of the present disclosure, after determining the installation height by calculation according to the installation weight, the minimum trigger torque, and the preset acceleration limit, the method for debugging a vibration switch further includes:
comparing the installation height with the total length of the swing rod;
in response to the fact that the installation height is larger than or equal to the total length of the swing rod, reselecting one optional weight, and calculating the installation height corresponding to the optional weight;
and in response to the fact that all the installation heights corresponding to the optional weights are larger than or equal to the total length of the swing rod, judging that the vibration switch is unqualified.
It should be understood by those skilled in the art that the weight pairs in the vibration switch have a plurality of selectable weights, and if the corresponding installation heights calculated and determined corresponding to the plurality of selectable weights are always greater than or equal to the total length of the swing rod, the mismatch between the installation weights of the weight pairs and the length of the swing rod in the vibration switch is proved, and the vibration switch does not meet the requirement of detecting the low-frequency shaking of the wind generating set.
According to the method for debugging the vibration switch, the matching relation between the weight of the weight and the length of the swing rod in the vibration switch can be quickly detected, products which do not meet the requirements are filtered when the vibration switch is debugged, and the influence on the low-frequency shaking detection result of the wind generating set is avoided.
In commissioning of the vibration switch, it may be that the appropriate position on the rocker has been selected for the attachment of the weight, in which case the attachment height is a known amount and the attachment of the weight corresponding to the appropriate weight is selected.
In one or more optional embodiments of the present disclosure, in a method for debugging a vibration switch, the calculating and determining, according to the preset acceleration limit and the minimum trigger torque, an installation weight and an installation height corresponding to the preset acceleration limit, further includes:
and selecting a distance from the bottom end of the swing rod as the mounting height.
Fig. 8 is a schematic diagram illustrating the force analysis of the weight when the vibration switch is triggered. Point B represents the bottom end, point T represents the initial position of the top end without oscillation, TmThe point represents the installation position of the weight on the swing rod and is the gravity center of the weight, and theta represents the triggering swing angle when the weight is triggered backwards. The triggering swing angle refers to an included angle (TBT) formed between the gravity center of the weight, the connecting line of the bottom end of the swing rod and the initial position of the swing rod during triggeringm) And (4) an angle.
The moment when the vibration switch is triggered after the weight is installed is as follows:
M＝(macosθ+mgsinθ)*2Rsin(H/2R)＝Mmin (4)
wherein M represents the moment when the vibration switch is triggered after being installed with the weight, MminRepresenting the minimum trigger moment, m representing the installation weight, a representing the preset acceleration limit, g representing the gravitational acceleration, R representing the bending radius, and H representing the installation height. The mounting height refers to the mounting position T of the weight on the swing rodmThe distance from the point to the point B at the bottom end of the swing rod is the height of the heavy block relative to the bottom end when the swing rod does not swing. As shown in fig. 8, from the mounting position TmThe point to the bottom end B of the swing rod is bent under the influence of swing to form a section of arc (arc BT)m) The arc length of (a) is H.
Wherein θ represents a trigger swing angle when the vibration switch is triggered after being installed with the weight;
θ＝H/2R+θ1
wherein ,θ1Representing the minimum swing angle;
the installation weight is as follows:
changing theta toH/2R+θ1Substituting into equation (5), it can be determined:
it should be noted that the method of the embodiments of the present disclosure may be executed by a single device, such as a computer or a server. The method of the embodiment can also be applied to a distributed scene and completed by the mutual cooperation of a plurality of devices. In such a distributed scenario, one of the devices may only perform one or more steps of the method of the embodiments of the present disclosure, and the devices may interact with each other to complete the method.
It should be noted that the above describes some embodiments of the disclosure. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments described above and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.
Based on the same inventive concept, corresponding to any embodiment method, one or more embodiments of the present specification further provide a vibration switch debugging device.
Referring to fig. 9, the vibration switch debugging apparatus includes:
a first analog trigger module 901, configured to set the vibration switch horizontally, apply external force to different positions of a swing link in the vibration switch for analog triggering, and determine a minimum swing angle and a maximum swing angle of the swing link during triggering;
a bending radius calculation module 902 configured to calculate and determine a bending radius of the swing link according to the minimum swing angle and the maximum swing angle;
a second analog trigger module 903, configured to suspend a weight on the swing rod, perform analog trigger by adjusting the weight and the suspension position of the weight, and determine the weight and the suspension position of the weight when triggered:
a trigger moment calculation module 904 configured to calculate and determine a minimum trigger moment of the vibration switch according to the bending radius, the weight of the weight, and the weight suspension position;
the debugging calculation module 905 is configured to determine a preset acceleration limit of the vibration switch, and calculate and determine the installation weight and the installation height corresponding to the preset acceleration limit according to the preset acceleration limit and the minimum trigger moment;
and a debugging and installing module 906 configured to select a vibration switch weight corresponding to the installation weight and debug and install the vibration switch weight according to the installation height.
For convenience of description, the above devices are described as being divided into various modules by functions, and are described separately. Of course, the functionality of the modules may be implemented in the same one or more software and/or hardware implementations in implementing one or more embodiments of the present description.
The device of the above embodiment is used to implement the corresponding vibration switch debugging method in any of the foregoing embodiments, and has the beneficial effects of the corresponding method embodiment, which are not described herein again.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the idea of the present disclosure, also technical features in the above embodiments or in different embodiments may be combined, steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present disclosure as described above, which are not provided in detail for the sake of brevity.
In addition, well-known power/ground connections to Integrated Circuit (IC) chips and other components may or may not be shown in the provided figures for simplicity of illustration and discussion, and so as not to obscure the embodiments of the disclosure. Furthermore, devices may be shown in block diagram form in order to avoid obscuring embodiments of the present disclosure, and this also takes into account the fact that specifics with respect to implementation of such block diagram devices are highly dependent upon the platform within which the embodiments of the present disclosure are to be implemented (i.e., specifics should be well within purview of one skilled in the art). Where specific details (e.g., circuits) are set forth in order to describe example embodiments of the disclosure, it should be apparent to one skilled in the art that the embodiments of the disclosure can be practiced without, or with variation of, these specific details. Accordingly, the description is to be regarded as illustrative instead of restrictive.
While the present disclosure has been described in conjunction with specific embodiments thereof, many alternatives, modifications, and variations of these embodiments will be apparent to those of ordinary skill in the art in light of the foregoing description. For example, other memory architectures (e.g., dynamic ram (dram)) may use the discussed embodiments.
The disclosed embodiments are intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalents, improvements, and the like that may be made within the spirit and principles of the embodiments of the disclosure are intended to be included within the scope of the disclosure.
Claims (10)
1. A vibration switch debugging method is characterized by comprising the following steps:
horizontally setting the vibration switch, applying external force to different positions of a swing rod in the vibration switch to perform simulated triggering, and determining the minimum swing angle and the maximum swing angle of the swing rod during triggering;
calculating and determining the bending radius of the swing rod according to the minimum swing angle and the maximum swing angle;
hanging weights on the oscillating bar, performing simulated triggering by adjusting the weight and the hanging position of the weights, and determining the weight and the hanging position of the weights during triggering;
calculating and determining the minimum trigger moment of the vibration switch according to the bending radius, the weight of the weight and the hanging position of the weight;
determining a preset acceleration limit value of the vibration switch, and calculating and determining the installation weight and the installation height corresponding to the preset acceleration limit value according to the preset acceleration limit value and the minimum trigger moment;
and selecting a vibration switch weight corresponding to the installation weight, and debugging and installing the vibration switch weight according to the installation height.
2. The method of claim 1, wherein applying external force to different positions of a rocker in the vibration switch performs analog triggering, and determining a minimum swing angle and a maximum swing angle of the rocker at the time of triggering, further comprises:
applying external force to the bottom end of the swing rod until the vibration switch is triggered, and determining a first offset distance of the top end of the swing rod relative to an initial position during triggering;
determining the minimum swing angle according to the first offset distance;
applying external force to the top end of the swing rod until the vibration switch is triggered, and determining a second offset distance of the top end of the swing rod relative to the initial position during triggering;
and determining the maximum swing angle according to the second offset distance.
3. The method of claim 2, wherein determining the minimum swing angle from the first offset distance further comprises:
θ1＝arcsin(b/L)
wherein ,θ1Representing the minimum swing angle, b representing the first offset distance, and L representing the total length of the swing link;
the determining the maximum swing angle according to the second offset distance further includes:
θ2＝arcsin(c/d)
wherein ,θ2Represents the maximum swing angle, c represents the second offset distance, and d represents the distance between the top end and the bottom end at the time of triggering.
4. The method of claim 3, wherein said determining a bend radius of said pendulum rod from said minimum swing angle and said maximum swing angle calculation further comprises:
the bending radius of the swing rod is as follows:
R＝(d/2)/sin(θ2-θ1)
wherein R represents the bend radius.
5. The method of claim 1, wherein the determining a minimum trigger moment of the vibration switch from the bending radius, the weight of the weight, and the weight suspension position calculation further comprises:
calculating and determining the suspension swing angle of the swing rod according to the bending radius and the weight suspension position:
θ3＝Hf/2R+θ1
wherein ,θ3Representing said suspension swing angle, HfRepresenting the weight suspension distance, R representing the bending radius, theta1Representing the minimum swing angle;
the weight suspension distance refers to the distance between the weight suspension position on the swing rod and the bottom end of the swing rod;
determining the spatial distance S between the weight suspension position and the bottom endf：
Sf＝2R sin(Hf/2R)
Calculating and determining the minimum trigger moment according to the weight of the weight, the suspension swing angle and the space distance:
Mmin＝mfg*Sfcosθ3
wherein ,MminRepresents the aboveMinimum trigger moment, mfRepresents the weight of the weight, and g represents the acceleration of gravity.
6. The method of claim 1, wherein the calculating and determining the installation weight and the installation height corresponding to the preset acceleration limit according to the preset acceleration limit and the minimum trigger torque further comprises:
selecting one of a plurality of selectable weights of the weight as the installation weight;
the moment when the vibration switch is triggered after the weight is installed is as follows:
M＝Mmin＝(macosθ+mgsinθ)*2Rsin(H/2R)
wherein M represents the moment when the vibration switch is triggered after being installed with the weight, MminRepresenting the minimum trigger moment, m representing the installation weight, a representing the preset acceleration limit, g representing a gravitational acceleration, R representing the bending radius, and H representing the installation height;
wherein θ represents a trigger swing angle when the vibration switch is triggered after being installed with the weight;
θ＝H/2R+θ1
wherein ,θ1Representing the minimum swing angle;
calculating and determining the installation height according to the installation weight, the minimum trigger moment and the preset acceleration limit value:
wherein ,
wherein β ═ arc tan (a/g).
7. The method of claim 1, wherein the calculating and determining the installation weight and the installation height corresponding to the preset acceleration limit according to the preset acceleration limit and the minimum trigger torque further comprises:
selecting a distance from the bottom end of the swing rod as the installation height;
the moment when the vibration switch is triggered after the weight is installed is as follows:
M＝Mmin＝(macosθ+mgsinθ)*2Rsin(H/2R)
wherein M represents the moment when the vibration switch is triggered after being installed with the weight, MminRepresenting the minimum trigger moment, m representing the installation weight, a representing the preset acceleration limit, g representing a gravitational acceleration, R representing the bending radius, and H representing the installation height;
wherein θ represents a trigger swing angle when the vibration switch is triggered after being installed with the weight;
θ＝H/2R+θ1
wherein ,θ1Representing the minimum swing angle;
calculating and determining the installation weight according to the installation height, the minimum trigger moment and the preset acceleration limit value as follows:
8. the method of claim 1, wherein the applying external force to different positions of the rocker of the vibration switch for analog triggering further comprises:
respectively applying external force to the swing rod from a plurality of force application directions relative to the swing rod to perform simulation triggering, and determining a plurality of bending radiuses corresponding to the plurality of force application directions;
comparing the plurality of bending radii to determine whether the plurality of bending radii are consistent;
and in response to the plurality of bending radii not being consistent, determining that the vibration switch is unqualified.
9. The method of claim 4, after computationally determining the installation height from the installation weight, the minimum trigger torque, and the preset acceleration limit, further comprising:
comparing the installation height with the total length of the swing rod;
in response to the fact that the installation height is larger than or equal to the total length of the swing rod, reselecting one optional weight, and calculating the installation height corresponding to the optional weight;
and in response to the fact that all the installation heights corresponding to the optional weights are larger than or equal to the total length of the swing rod, judging that the vibration switch is unqualified.
10. A vibration switch debugging device, comprising:
the first analog trigger module is configured to horizontally set the vibration switch, apply external force to different positions of a swing rod in the vibration switch for analog triggering, and determine a minimum swing angle and a maximum swing angle of the swing rod during triggering;
a bending radius calculation module configured to calculate and determine a bending radius of the swing link according to the minimum swing angle and the maximum swing angle;
the second simulation trigger module is configured to suspend a weight on the swing rod, perform simulation trigger by adjusting the weight and the suspension position of the weight, and determine the weight and the suspension position of the weight during trigger;
a trigger moment calculation module configured to calculate and determine a minimum trigger moment of the vibration switch according to the bending radius, the weight of the weight and the weight suspension position;
the debugging calculation module is configured to determine a preset acceleration limit value of the vibration switch, and calculate and determine the installation weight and the installation height corresponding to the preset acceleration limit value according to the preset acceleration limit value and the minimum trigger moment;
and the debugging and installing module is configured to select the vibration switch weight corresponding to the installation weight and debug and install the vibration switch weight according to the installation height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111087639.4A CN113916359B (en) | 2021-09-16 | 2021-09-16 | Vibration switch debugging method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111087639.4A CN113916359B (en) | 2021-09-16 | 2021-09-16 | Vibration switch debugging method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113916359A true CN113916359A (en) | 2022-01-11 |
| CN113916359B CN113916359B (en) | 2023-08-08 |
Family
ID=79235274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111087639.4A Active CN113916359B (en) | 2021-09-16 | 2021-09-16 | Vibration switch debugging method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113916359B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001317945A (en) * | 2000-05-02 | 2001-11-16 | Akitsugu Fujieda | Plumb bob weight position detecting device |
| CN103270399A (en) * | 2010-12-29 | 2013-08-28 | 维斯塔斯风力***集团公司 | Shock sensor for wind turbine generator |
| CN206096390U (en) * | 2016-10-19 | 2017-04-12 | 北京金风科创风电设备有限公司 | Counter debugging device and wind generating set's debug system |
| US20170130802A1 (en) * | 2014-07-29 | 2017-05-11 | Industry-Academic Cooperation Foundation, Dankook University | Method for calculating optimal control force of active mass damper and controlling active mass damper |
| CN107657874A (en) * | 2017-10-13 | 2018-02-02 | 齐齐哈尔大学 | A kind of experimental method using cylinder weight measurement acceleration of gravity |
| AU2016431712A1 (en) * | 2016-12-08 | 2019-02-21 | Taiyuan University Of Technology | Method and device for preventing impact vibration of lift system |
-
2021
- 2021-09-16 CN CN202111087639.4A patent/CN113916359B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001317945A (en) * | 2000-05-02 | 2001-11-16 | Akitsugu Fujieda | Plumb bob weight position detecting device |
| CN103270399A (en) * | 2010-12-29 | 2013-08-28 | 维斯塔斯风力***集团公司 | Shock sensor for wind turbine generator |
| US20170130802A1 (en) * | 2014-07-29 | 2017-05-11 | Industry-Academic Cooperation Foundation, Dankook University | Method for calculating optimal control force of active mass damper and controlling active mass damper |
| CN206096390U (en) * | 2016-10-19 | 2017-04-12 | 北京金风科创风电设备有限公司 | Counter debugging device and wind generating set's debug system |
| AU2016431712A1 (en) * | 2016-12-08 | 2019-02-21 | Taiyuan University Of Technology | Method and device for preventing impact vibration of lift system |
| CN107657874A (en) * | 2017-10-13 | 2018-02-02 | 齐齐哈尔大学 | A kind of experimental method using cylinder weight measurement acceleration of gravity |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113916359B (en) | 2023-08-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101413840B (en) | Device and method for measuring object mass center | |
| CN108287072A (en) | A kind of robot precision speed reduction device method for testing fatigue life | |
| WO2009097049A2 (en) | Dual-axis resonance testing of wind turbine blades | |
| CN107239630B (en) | Support system for vibration test of airborne external pendant and design method thereof | |
| CN203148787U (en) | Device for fatigue test of plane stress state | |
| CN105675241B (en) | Mechanical shock test's equipment | |
| CN103743556A (en) | Testing apparatus for steam turbine blade with shroud ring and boss lashing wire structures | |
| CN109972670A (en) | The loading device of lower bearing capacity of pile foundation attribute testing is acted on for indoor combined load | |
| CN105438985A (en) | Metal structure fatigue detecting system and method for off-shored crane | |
| CN205262708U (en) | Multifunctional machinery impact testing device | |
| Lall et al. | Reliability of lead-free SAC electronics under simultaneous exposure to high temperature and vibration | |
| CN105387987A (en) | Manual high-frequency mechanical impact test apparatus | |
| CN103344398A (en) | Method for testing damping property of on-line monitoring device of power transformation equipment | |
| CN108692959A (en) | A kind of vehicle dent resistance energy test device | |
| Zhang et al. | Modeling of board-level package by finite element analysis and laser interferometer measurements | |
| CN113916359A (en) | Vibration switch debugging method and device | |
| CN206114199U (en) | Three -coordinate measuring machine weight balancing unit | |
| CN105043703B (en) | General shock absorber the static and dynamic experiment platform | |
| Saravanan et al. | Fatigue failure of pb-free electronic packages under random vibration loads | |
| CN205642774U (en) | Vibration test analogue means of drilling derrick and base system | |
| CN209387770U (en) | A kind of electric system compensation capacitor vibration simulation testboard | |
| CN114136573B (en) | Method for calculating early warning amplitude of key component of hydroelectric generating set and related equipment | |
| RU2637721C1 (en) | Method for graduating multicomponent force and torque sensors and device for its implementation | |
| CN1142534C (en) | Multifunctional theoretical mechanics experiment stage | |
| USRE22416E (en) | Fatigue-testing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |