CN105424501B - Crane chassis rigidity assessment method and device - Google Patents

Crane chassis rigidity assessment method and device Download PDF

Info

Publication number
CN105424501B
CN105424501B CN201510980153.1A CN201510980153A CN105424501B CN 105424501 B CN105424501 B CN 105424501B CN 201510980153 A CN201510980153 A CN 201510980153A CN 105424501 B CN105424501 B CN 105424501B
Authority
CN
China
Prior art keywords
rigidity
chassis
vertical bending
bending rigidity
crane
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.)
Active
Application number
CN201510980153.1A
Other languages
Chinese (zh)
Other versions
CN105424501A (en
Inventor
刘洪礼
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hebei Leisa Heavy Construction Machinery Co Ltd
Original Assignee
Beiqi Foton Motor Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Beiqi Foton Motor Co Ltd filed Critical Beiqi Foton Motor Co Ltd
Priority to CN201510980153.1A priority Critical patent/CN105424501B/en
Publication of CN105424501A publication Critical patent/CN105424501A/en
Application granted granted Critical
Publication of CN105424501B publication Critical patent/CN105424501B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/22—Investigating strength properties of solid materials by application of mechanical stress by applying steady torsional forces

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Control And Safety Of Cranes (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

The invention discloses a kind of crane chassis rigidity assessment method and device, including：The vertical displacement variable quantity and lifting capacity variable quantity of chassis upper flange circle after object carrier are hung before object carrier and hung based on chassis, calculate the vertical bending rigidity of chassis, the deflection angle and hoisting moment variable quantity of object carrier rear flange circle are hung before object carrier and hung based on chassis, calculate the torsional rigidity of chassis；The biggest lifting capacity based on crane, supporting leg longitudinal direction span, supporting leg horizontal span and vertical bending rigidity constant determine vertical bending rigidity evaluation index, and maximum hoisting moment and torsional rigidity constant based on crane determine torsional rigidity evaluation index；If vertical bending rigidity meets vertical bending rigidity evaluation index, vertical bending rigidity is qualified；If torsional rigidity meets torsional rigidity evaluation index, torsional rigidity is qualified.The rigidity of crane chassis can accurately be checked, ensured by the chassis safety in utilization and rigidity qualification after checking by this method and device.

Description

Crane chassis rigidity assessment method and device
Technical field
The present invention relates to mechanical measurement technique field, more specifically to a kind of crane chassis rigidity assessment method And device.
Background technology
Autocrane chassis is the basis of crane job, and its intensity is to test the sole criterion of crane chassis.By In the popularization and application of high-strength steel, it is generally the case that crane chassis disclosure satisfy that certain intensity, but generally meet by force While spending, the rigidity difference of each crane chassis is very big.
Rigidity refers to the power required for unit deformation, exactly can the property that is deformed of restriction effect power, wherein signified Be structure inward nature.For the handling characteristics of derrick tower, rigidity is if desired improved, then needs to enter material and structure Row adjustment, while increasing rigidity, can also increase cost, and rigidity is unfavorable for greatly very much the reduction of cost；However, rigidity too it is small then Lifting performance can be influenceed.
In summary, how to be tested and assessed for the rigidity of crane chassis, be that current those skilled in the art urgently solve Certainly the problem of.
The content of the invention
In view of this, can be to rising it is an object of the invention to provide a kind of crane chassis rigidity assessment method, this method The rigidity of heavy-duty machine chassis is tested and assessed, and judges the rigidity property of chassis.
It is a further object of the present invention to provide a kind of crane chassis rigidity assessment device, the device can be automatically to lifting The rigidity of machine chassis is assessed, and judges the rigidity property of chassis.
To achieve these goals, the present invention provides following technical scheme：
A kind of crane chassis rigidity assessment method, including：
The vertical displacement variable quantity of the chassis upper flange circle and lifting after object carrier are hung before object carrier and hang based on chassis Variable quantity is measured, calculates the vertical bending rigidity of the chassis, the method after object carrier is hung before object carrier and hang based on the chassis The deflection angle and hoisting moment variable quantity of orchid circle, calculate the torsional rigidity of the chassis；
The biggest lifting capacity based on the crane, supporting leg longitudinal direction span, supporting leg horizontal span and vertical bending rigidity are normal Number determines vertical bending rigidity evaluation index, and maximum hoisting moment and torsional rigidity constant based on the crane determine antitorque Stiffness estimation index；
If the vertical bending rigidity meets the vertical bending rigidity evaluation index, the vertical bending rigidity is closed Lattice；If the torsional rigidity meets the torsional rigidity evaluation index, the torsional rigidity is qualified.
Preferably, hang under load state, respectively after object is left in face of ground and object leaves ground, obtain the flange circle In 2 points of vertical displacement on vertical cross-section where crane arm；
According to formula Δ fz=0.5 (A-C)+0.5 (B-D), calculate the vertical displacement variation delta fz, according to formula Δ θ =tan-1[(B-D)/L- (A-C)/L] * 180/ π, calculates the deflection angle Δ θ；
Wherein, A is that the object leaves in face of ground the flange circle where crane arm first point on vertical cross-section Height, C is that the object leaves described first point behind ground of height, and B is that the object leaves the flange circle in face of ground Where crane arm on vertical cross-section second point height, D is that the object leaves the height of the second point behind ground.
Preferably, the vertical bending rigidity for calculating the chassis, including according to formula KG=Δ G/ Δs fzCalculate, its In, KGFor the vertical bending rigidity, Δ G is the lifting capacity variable quantity, Δ fzFor the vertical displacement variable quantity；
The torsional rigidity for calculating the chassis, including according to formula KM=Δ M/ Δs θ is calculated, wherein, KMResist to be described Rigidity is turned round, Δ M is the hoisting moment variable quantity, and Δ θ is the deflection angle.
Preferably, the biggest lifting capacity based on the crane, supporting leg longitudinal direction span, supporting leg horizontal span and vertical Bending rigidity constant determines vertical bending rigidity evaluation index, including：
Determine that the vertical bending rigidity evaluation index is
Wherein, KGFor the vertical bending rigidity, GmaxFor the biggest lifting capacity, L1For supporting leg longitudinal direction span, L2 For the supporting leg horizontal span, KCFor the vertical bending rigidity constant.
Preferably, the vertical bending rigidity constant KCAccording to the biggest lifting capacity GmaxIt is determined that and risen with the maximum Weight GmaxVariation tendency it is opposite；
Wherein, when the biggest lifting capacity is 20 to 35T, the scope of the vertical bending rigidity constant is 900 to 700； When the biggest lifting capacity is 40 to 60T, the scope of the vertical bending rigidity constant is 600 to 500；The biggest lifting capacity For 70 to 80T when, the scope of the vertical bending rigidity constant is 400 to 350.
Preferably, the maximum hoisting moment and torsional rigidity constant based on the crane determine that torsional rigidity is evaluated Index, including：
It is K to determine the torsional rigidity evaluation indexM≥Mmax/Kθ；
Wherein, KMFor the torsional rigidity, MmaxFor the maximum hoisting moment, KθFor the torsional rigidity constant.
Preferably, the torsional rigidity constant KθAccording to the maximum hoisting moment MmaxIt is determined that and with the maximum lifting Torque MmaxVariation tendency it is identical；
Wherein, when the maximum hoisting moment is 20 to 35T, the torsional rigidity constant is 0.7；The maximum lifting power When square is 40 to 60T, the torsional rigidity constant is 0.8；When the maximum hoisting moment is 70 to 80T, the torsional rigidity Constant is 0.9.
A kind of crane chassis rigidity assessment device, including：
Computing module, for hanging before object carrier and hanging the vertical displacement of the chassis upper flange circle after object carrier based on chassis Variable quantity and lifting capacity variable quantity, the vertical bending rigidity of the chassis is calculated, hung based on chassis before object carrier and hang object carrier The deflection angle and hoisting moment variable quantity of the flange circle afterwards, calculate the torsional rigidity of the chassis；
Evaluation criterion module is formulated, it is horizontal for the biggest lifting capacity based on the crane, supporting leg longitudinal direction span, supporting leg Span and vertical bending rigidity constant determine vertical bending rigidity evaluation index, the maximum hoisting moment based on the crane and Torsional rigidity constant determines torsional rigidity evaluation index；
Evaluation module, for judging according to the vertical bending rigidity evaluation index and the torsional rigidity evaluation index, If the vertical bending rigidity meets the vertical bending rigidity evaluation index, the vertical bending rigidity is qualified；It is if described Torsional rigidity meets the torsional rigidity evaluation index, then the torsional rigidity is qualified.
Preferably, the computing module includes：
Subelement is obtained, for hanging under load state, respectively after object is left in face of ground and object leaves ground, obtains institute Flange circle is stated in the deflection angle of 2 points of vertical displacement and the flange circle on vertical cross-section where crane arm；
Computation subunit, for calculating the vertical bending rigidity KG=Δ G/ Δs fz, calculate the torsional rigidity KM=Δ M/Δθ；Wherein, Δ G is the lifting capacity variable quantity, and Δ M is the hoisting moment variable quantity, Δ fzBecome for the vertical displacement Change amount, according to formula Δ fz=0.5 (A-C)+0.5 (B-D) is calculated, and Δ θ is the deflection angle, according to formula Δ θ=tan-1 [(B-D)/L- (A-C)/L] * 180/ π is calculated；
Wherein, A is that the object leaves in face of ground the flange circle where crane arm first point on vertical cross-section Height, C is that the object leaves described first point behind ground of height, and B is that the object leaves the flange circle in face of ground Where crane arm on vertical cross-section second point height, D is that the object leaves the height of the second point behind ground.
Preferably, formulating evaluation criterion module includes：
Vertical bending rigidity evaluation index determining unit, for determining that the vertical bending rigidity evaluation index isWherein, KGFor the vertical bending rigidity, GmaxFor the biggest lifting capacity, L1To be described Supporting leg longitudinal direction span, L2For the supporting leg horizontal span, KCIt is normal for the vertical bending rigidity constant, the vertical bending rigidity Number KCWith the biggest lifting capacity GmaxVariation tendency it is opposite；
Torsional rigidity evaluation index determining unit, for determining that the torsional rigidity evaluation index is KG≥Mmax/Kθ, its In, KMFor the torsional rigidity, MmaxFor the maximum hoisting moment, KθIt is normal for the torsional rigidity constant, the torsional rigidity Number KθWith the maximum hoisting moment MmaxVariation tendency it is identical.
Crane chassis rigidity assessment method and device provided by the invention, hung by chassis before object carrier and hang object carrier Lifting is calculated in vertical displacement variable quantity, lifting capacity variable quantity, the deflection angle of flange circle and hoisting moment variable quantity afterwards The vertical bending rigidity and torsional rigidity of machine chassis, by the biggest lifting capacity of crane, supporting leg longitudinal direction span, supporting leg laterally across Degree and straight bending rigidity constant obtain vertical bending rigidity evaluation index, pass through the maximum hoisting moment and torsional rigidity of crane Constant determines torsional rigidity evaluation index, and is checked respectively by vertical bending rigidity evaluation index and torsional rigidity evaluation index Vertical bending rigidity and torsional rigidity, the check result of vertical bending rigidity and torsional rigidity can be obtained.
The rigidity of crane chassis can accurately be checked by this method, ensure to use by the chassis after checking Safety.A kind of crane chassis rigidity assessment device provided by the present invention can pass through computing module, formulation evaluation criterion mould Block and evaluation module are checked to chassis rigidity automatically, ensure the rigidity qualification of chassis.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this The embodiment of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is the flow chart of the specific embodiment one of crane chassis rigidity assessment method provided by the present invention；
Fig. 2 is the flow chart of the specific embodiment two of crane chassis rigidity assessment method provided by the present invention；
Fig. 3 is the schematic diagram of crane chassis provided by the present invention；
Fig. 4 is the schematic diagram of the specific embodiment of crane chassis rigidity assessment device provided by the present invention.
In figure 1 above -4：
1 be flange circle, 2 be supporting leg, 10 be computing module, 101 be obtain subelement, 102 be computation subunit, 20 be system Accepted opinion valency standard module, 201 be vertical bending rigidity evaluation index determining module, 202 to be that torsional rigidity evaluation index determines single Member, 30 are evaluation module.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made Embodiment, belong to the scope of protection of the invention.
The core of the present invention is to provide a kind of crane chassis rigidity assessment method, and this method can be to crane chassis Rigidity is tested and assessed, and judges the rigidity property of chassis.
Another core of the present invention is to provide a kind of crane chassis rigidity assessment device, and the device can be automatically to lifting The rigidity of machine chassis is assessed, and judges the rigidity property of chassis.
Fig. 1 to Fig. 4 is refer to, Fig. 1 is the specific embodiment one of crane chassis rigidity assessment method provided by the present invention Flow chart；Fig. 2 is the flow chart of the specific embodiment two of crane chassis rigidity assessment method provided by the present invention；Fig. 3 is The schematic diagram of crane chassis provided by the present invention；Fig. 4 is the specific of crane chassis rigidity assessment device provided by the present invention The schematic diagram of embodiment.
A kind of crane chassis rigidity assessment method provided by the present invention, it is mainly used in the rigidity school of crane chassis Core, flange circle 1 and supporting leg 2 are provided with chassis, the check process to the flange circle 1 on chassis mainly by measuring and school Core.The step of this method, includes：
Step S1：Based on chassis hang before object carrier and hang after object carrier the vertical displacement variable quantity of chassis upper flange circle 1 and Lifting capacity variable quantity, the vertical bending rigidity of chassis is calculated, hung based on chassis before object carrier and hang the inclined of object carrier rear flange circle 1 Gyration and hoisting moment variable quantity, calculate the torsional rigidity of chassis；
Step S2：The biggest lifting capacity based on crane, supporting leg longitudinal direction span, supporting leg horizontal span and vertical bending rigidity Constant determines vertical bending rigidity evaluation index, and maximum hoisting moment and torsional rigidity constant based on crane determine antitorque firm Spend evaluation index；
Step S3：If vertical bending rigidity meets vertical bending rigidity evaluation index, vertical bending rigidity is qualified；It is if anti- Turn round rigidity and meet torsional rigidity evaluation index, then torsional rigidity is qualified.
Need it is to be noted that due between above-mentioned steps S1 and step S2 and in the absence of precedence relationship in logic, so Step S1 can upon step s 2, i.e. step S1 and step S2 order can overturn, and has no effect on the implementation of this method, and Label in the present embodiment is used for the purpose of can be corresponding clear with accompanying drawing.
After hanging before object carrier by chassis in crane chassis rigidity assessment method provided by the present invention and hang object carrier Vertical displacement variable quantity, lifting capacity variable quantity, the deflection angle of flange circle 1 and hoisting moment variable quantity crane is calculated The vertical bending rigidity and torsional rigidity of chassis, pass through the biggest lifting capacity of crane, supporting leg longitudinal direction span, supporting leg horizontal span Vertical bending rigidity evaluation index is obtained with straight bending rigidity constant, it is normal by the maximum hoisting moment and torsional rigidity of crane Number determines torsional rigidity evaluation index, and is checked respectively vertically by vertical bending rigidity evaluation index torsional rigidity evaluation index Bending rigidity and torsional rigidity, the check result of vertical bending rigidity and torsional rigidity can be obtained.
The rigidity of crane chassis can accurately be checked by this method, ensure to use by the chassis after checking Safety.
, may be before and after lift heavy to flange circle 1 in view of gap be present between the pivoting support on chassis and supporting leg 2 Vertical displacement variable quantity and deflection angle have an impact, so needing to avoid the influence in above-mentioned pivoting support and supporting leg gap.
In a preferred embodiment provided by the present invention, for the acquisition of vertical displacement variable quantity and deflection angle Mode is specific as follows：
Hang under load state, respectively after object is left in face of ground and object leaves ground, obtain flange circle 1 and hung in crane 2 points of vertical displacement on the vertical cross-section of arm place；
According to formula Δ fz=0.5 (A-C)+0.5 (B-D), calculate vertical displacement variation delta fz, according to formula Δ θ= tan-1[(B-D)/L- (A-C)/L] * 180/ π, calculate deflection angle Δ θ；
Wherein, A is that object leaves ground forward flange circle 1 in first point of height, C on vertical cross-section where crane arm First point behind ground of height is left for object, B is that object leaves the vertical cross-section where crane arm of ground forward flange circle 1 The height of upper second point, D are the height that object leaves second point behind ground.
After the acquisition state that above-described embodiment is provided is left in face of ground to hang object under load state and object leaves ground Two states, it is necessary to should be mentioned that, first state is that object is in and hangs load state but object does not leave ground, i.e. chassis yet Supporting leg 2 stretched out, and arm is in lifting state, in this case, in the absence of above-mentioned gap, so between having eliminated The influence of gap；Second state is that object is in and hangs load state and object has left ground, and crane is in finally hanging Load state.
On the basis of above-mentioned each embodiment, how the present embodiment is to calculate the vertical bending rigidity of chassis and antitorque Rigidity is introduced, including according to formula KG=Δ G/ Δs fzVertical bending rigidity is calculated, according to formula KM=Δ M/ Δs θ is calculated Torsional rigidity；
Wherein, KGFor vertical bending rigidity, Δ G is lifting capacity variable quantity, Δ fzFor vertical displacement variable quantity；KMTo be antitorque Rigidity, Δ M are hoisting moment variable quantity, and Δ θ is deflection angle.
In above-mentioned each embodiment, by the biggest lifting capacity of crane, supporting leg longitudinal direction span, supporting leg horizontal span and Vertical bending rigidity constant determines vertical bending rigidity evaluation index, and the step can specifically include：
It is determined that vertical bending rigidity evaluation index is
Wherein, KGFor vertical bending rigidity, GmaxFor the biggest lifting capacity, L1For supporting leg longitudinal direction span, L2For supporting leg laterally across Degree, KCFor vertical bending rigidity constant.
Need it is to be noted that KGTo need the vertical bending rigidity checked, the vertical bending rigidity needs to be more than or equal to The formulae results on right side can be by the check of rigidity, i.e., on the right side of inequalityIt is that vertical bending resistance is firm Spend the minimum value of permissible value.
The present embodiment is obtained by the biggest lifting capacity, supporting leg longitudinal direction span, supporting leg horizontal span and vertical bending rigidity constant To vertical bending rigidity evaluation index, in the present embodiment, vertical bending rigidity constant is empirical, can be according to crane Model or performance etc. carry out value.
Can be that vertical bending rigidity constant sets more reasonably span, example on the basis of above-described embodiment Such as, vertical bending rigidity constant KCCan be according to biggest lifting capacity GmaxIt is determined that and variation tendency and biggest lifting capacity GmaxChange Change trend is opposite；Specifically variation tendency may be referred to following relation：
When the biggest lifting capacity is 20 to 35T, the scope of vertical bending rigidity constant is 900 to 700；The biggest lifting capacity is 40 During to 60T, the scope of vertical bending rigidity constant is 600 to 500；When the biggest lifting capacity is 70 to 80T, vertical bending rigidity is normal Several scopes is 400 to 350.
In the choosing method to vertical bending rigidity constant that above-described embodiment is provided, by the way that vertical bending rigidity is normal Several variation tendencies is arranged to the variation tendency of the biggest lifting capacity on the contrary, relatively reasonable and accurate vertical bending resistance can be obtained Stiffness estimation index.Certainly, according to the difference of actual conditions and the setting of experience, vertical bending rigidity constant can be with not Tongfang Formula obtains.
In above-mentioned each embodiment, maximum hoisting moment and torsional rigidity constant based on crane determine torsional rigidity Evaluation index, specifically, it can include：
It is K to determine torsional rigidity evaluation indexM≥Mmax/Kθ；
Wherein, KMFor torsional rigidity, MmaxFor maximum hoisting moment, KθFor torsional rigidity constant.
Similar with the determination method of vertical bending rigidity evaluation index, torsional rigidity needs to meet that above-mentioned inequality can Pass through check.In the present embodiment, torsional rigidity constant is empirical, can be carried out according to crane model or performance etc. Value.
Similarly, torsional rigidity constant KθAccording to maximum hoisting moment MmaxIt is determined that and variation tendency and maximum hoisting moment MmaxVariation tendency it is identical；
Wherein, when maximum hoisting moment is 20 to 35T, torsional rigidity constant is 0.7；Maximum hoisting moment is 40 to 60T When, torsional rigidity constant is 0.8；When maximum hoisting moment is 70 to 80T, torsional rigidity constant is 0.9.
Optionally, torsional rigidity constant selected and the relation of the example above need not be fully complied with, it is only necessary to meet with Maximum hoisting moment MmaxVariation tendency it is identical, can be adjusted in specific implementation process according to service condition.
In the choosing method to antitorque stiffness constant that above-described embodiment is provided, by by the value of torsional rigidity constant It is arranged to identical with maximum lifting torque, relatively reasonable and accurate torsional rigidity evaluation index can be obtained.Certainly, according to reality The difference of border situation and the setting of experience, torsional rigidity constant can obtain by different way.
Except the crane chassis rigidity assessment method disclosed in above-described embodiment, the present invention also provides a kind of crane bottom Frame rigidity assessment device, the device are used to realize crane chassis rigidity assessment method.Crane chassis rigidity assessment device master To include computing module 10, formulate evaluation criterion module 20 and evaluation module 30.
The vertical displacement that computing module 10 is used to be hung before object carrier and be hung based on chassis chassis upper flange circle 1 after object carrier becomes Change amount and lifting capacity variable quantity, the vertical bending rigidity of chassis is calculated, hung based on chassis before object carrier and hang object carrier rear flange The deflection angle and hoisting moment variable quantity of circle 1, calculate the torsional rigidity of chassis.
Formulate evaluation criterion module 20 be used for the biggest lifting capacity based on crane, supporting leg longitudinal direction span, supporting leg laterally across Degree and vertical bending rigidity constant determine vertical bending rigidity evaluation index, maximum hoisting moment based on crane and it is antitorque just Degree constant determines torsional rigidity evaluation index.
Evaluation module 30 is used to judge according to vertical bending rigidity evaluation index and torsional rigidity evaluation index, if vertical anti- Curved rigidity meets vertical bending rigidity evaluation index, then vertical bending rigidity is qualified；If torsional rigidity meets that torsional rigidity is evaluated Index, then torsional rigidity is qualified.
Wherein, computing module 10, formulation evaluation criterion module 20 are connected with evaluation module 30, and evaluation module 30 is used to obtain The vertical bending rigidity and torsional rigidity of the chassis of the transmission of computing module 10 are taken, and obtains and formulates what evaluation criterion module 20 was sent Vertical bending rigidity evaluation index and torsional rigidity evaluation index, and to comparing corresponding to the two progress.
The vertical bending rigidity and torsional rigidity of chassis are calculated by computing module 10 for said apparatus, and pass through formulation Evaluation criterion module 20 obtains vertical bending rigidity evaluation index torsional rigidity evaluation index, and above-mentioned data are sent into evaluation mould After block 30, it is compared and is judged by evaluation module 30, if vertical bending rigidity and torsional rigidity is satisfied with vertical resist respectively Curved stiffness estimation index torsional rigidity evaluation index, then pass through Stiffness evaluation, it was demonstrated that the rigidity of chassis meets use demand.
Method goes for the chassis of all cranes used by said apparatus, moreover, the calculating of said apparatus and Judge to be operated manually and calculate without operating personnel, can save manually and improve test and appraisal efficiency by carrying out automatically.
In a specific embodiment provided by the present invention, computing module 10, which can specifically include, obtains subelement 101 With computation subunit 102.
Wherein, subelement 101 is obtained to be used to hang under load state respectively after object is left in face of ground and object leaves ground, Flange circle 1 is obtained in 2 points of vertical displacement on vertical cross-section where crane arm.
Computation subunit 102 is used to calculate vertical bending rigidity KG=Δ G/ Δs fz, calculate torsional rigidity KM=Δ M/ Δs θ.
Wherein, Δ G is lifting capacity variable quantity, and Δ M is hoisting moment variable quantity, Δ fzFor vertical displacement variable quantity, according to Formula Δ fz=0.5 (A-C)+0.5 (B-D) is calculated, and Δ θ is deflection angle, according to formula Δ θ=tan-1[(B-D)/L-(A- C)/L] * 180/ π calculating.
Specifically, A is that object leaves ground forward flange circle 1 in first point of height on vertical cross-section where crane arm Degree, C are that object leaves first point behind ground of height, and it is vertical where crane arm that B is that object leaves ground forward flange circle 1 The height of second point on section, D are the height that object leaves second point behind ground.
In a specific embodiment provided by the present invention, vertical resist can be specifically included by formulating evaluation criterion module 20 Curved stiffness estimation index determining unit 201 and torsional rigidity evaluation index determining unit 202.
Specifically, vertical bending rigidity evaluation index determining unit 201 is used to determine that vertical bending rigidity evaluation index isWherein, KGFor vertical bending rigidity, GmaxFor the biggest lifting capacity, L1For supporting leg longitudinal direction span, L2For supporting leg horizontal span, KCFor vertical bending rigidity constant, vertical bending rigidity constant KCWith biggest lifting capacity GmaxChange Trend is opposite.
Torsional rigidity evaluation index determining unit 202 is used to determine that torsional rigidity evaluation index is KG≥Mmax/Kθ, wherein, KMFor torsional rigidity, MmaxFor maximum hoisting moment, KθFor torsional rigidity constant, torsional rigidity constant KθWith maximum hoisting moment MmaxVariation tendency it is identical.
In the above-described embodiments, the executive capability in modules can be by advance by the system of program writing module Realize the self-operating of module.Connection and data transfer mode between each module may be referred to mode of the prior art, herein Repeat no more.
A kind of crane chassis rigidity assessment device provided by the present invention can pass through computing module, formulation evaluation criterion Module and evaluation module are checked to chassis rigidity automatically, ensure the rigidity qualification of chassis.
Each embodiment is described by the way of progressive in this specification, what each embodiment stressed be and other The difference of embodiment, between each embodiment identical similar portion mutually referring to.
Crane chassis rigidity assessment method provided by the present invention and device are described in detail above.Herein Apply specific case to be set forth the principle and embodiment of the present invention, the explanation of above example is only intended to help Understand the method and its core concept of the present invention.It should be pointed out that for those skilled in the art, do not taking off On the premise of from the principle of the invention, some improvement and modification can also be carried out to the present invention, these are improved and modification also falls into this In invention scope of the claims.

Claims (10)

  1. A kind of 1. crane chassis rigidity assessment method, it is characterised in that including：
    The vertical displacement variable quantity of the chassis upper flange circle and lifting quantitative change after object carrier are hung before object carrier and hang based on chassis Change amount, the vertical bending rigidity of the chassis is calculated, the flange circle after object carrier is hung before object carrier and hang based on the chassis Deflection angle and hoisting moment variable quantity, calculate the torsional rigidity of the chassis；
    The biggest lifting capacity based on the crane, supporting leg longitudinal direction span, supporting leg horizontal span and vertical bending rigidity constant are true Fixed vertical bending rigidity evaluation index, maximum hoisting moment and torsional rigidity constant based on the crane determine torsional rigidity Evaluation index；
    If the vertical bending rigidity meets the vertical bending rigidity evaluation index, the vertical bending rigidity is qualified；If The torsional rigidity meets the torsional rigidity evaluation index, then the torsional rigidity is qualified.
  2. 2. crane chassis rigidity assessment method according to claim 1, it is characterised in that hang under load state, exist respectively After object is left in face of ground and object leaves ground, the flange circle is obtained where crane arm 2 points on vertical cross-section Vertical displacement；
    According to formula Δ fz=0.5 (A-C)+0.5 (B-D), calculate the vertical displacement variation delta fz, according to formula Δ θ= tan-1[(B-D)/L- (A-C)/L] * 180/ π, calculates the deflection angle Δ θ；
    Wherein, A is that the object leaves the flange circle in face of ground in first point of height on vertical cross-section where crane arm Degree, C are the height that the object leaves described first point behind ground, and B leaves the flange circle in face of ground for the object and risen The height of second point, D are the height that the object leaves the second point behind ground on the vertical cross-section of heavy-duty machine arm place.
  3. 3. crane chassis rigidity assessment method according to claim 1, it is characterised in that the calculating chassis Vertical bending rigidity, including according to formula KG=Δ G/ Δs fzCalculate, wherein, KGFor the vertical bending rigidity, Δ G is described Lifting capacity variable quantity, Δ fzFor the vertical displacement variable quantity；
    The torsional rigidity for calculating the chassis, including according to formula KM=Δ M/ Δs θ is calculated, wherein, KMFor it is described it is antitorque just Degree, Δ M is the hoisting moment variable quantity, and Δ θ is the deflection angle.
  4. 4. crane chassis rigidity assessment method according to claim 1, it is characterised in that described to be based on the crane The biggest lifting capacity, supporting leg longitudinal direction span, supporting leg horizontal span and vertical bending rigidity constant determine the evaluation of vertical bending rigidity Index, including：
    Determine that the vertical bending rigidity evaluation index is
    Wherein, KGFor the vertical bending rigidity, GmaxFor the biggest lifting capacity, L1For supporting leg longitudinal direction span, L2For institute State supporting leg horizontal span, KCFor the vertical bending rigidity constant.
  5. 5. crane chassis rigidity assessment method according to claim 4, it is characterised in that the vertical bending rigidity is normal Number KCAccording to the biggest lifting capacity GmaxIt is determined that and with the biggest lifting capacity GmaxVariation tendency it is opposite；
    Wherein, when the biggest lifting capacity is 20 to 35T, the scope of the vertical bending rigidity constant is 900 to 700；It is described When the biggest lifting capacity is 40 to 60T, the scope of the vertical bending rigidity constant is 600 to 500；The biggest lifting capacity is 70 During to 80T, the scope of the vertical bending rigidity constant is 400 to 350.
  6. 6. crane chassis rigidity assessment method according to claim 1, it is characterised in that described to be based on the crane Maximum hoisting moment and torsional rigidity constant determine torsional rigidity evaluation index, including：
    It is K to determine the torsional rigidity evaluation indexM≥Mmax/Kθ；
    Wherein, KMFor the torsional rigidity, MmaxFor the maximum hoisting moment, KθFor the torsional rigidity constant.
  7. 7. crane chassis rigidity assessment method according to claim 6, it is characterised in that the torsional rigidity constant Kθ According to the maximum hoisting moment MmaxIt is determined that and with the maximum hoisting moment MmaxVariation tendency it is identical；
    Wherein, when the maximum hoisting moment is 20 to 35T, the torsional rigidity constant is 0.7；The maximum hoisting moment is When 40 to 60T, the torsional rigidity constant is 0.8；When the maximum hoisting moment is 70 to 80T, the torsional rigidity constant For 0.9.
  8. A kind of 8. crane chassis rigidity assessment device, it is characterised in that including：
    Computing module, for hanging before object carrier and hanging the vertical displacement change of the chassis upper flange circle after object carrier based on chassis Amount and lifting capacity variable quantity, the vertical bending rigidity of the chassis is calculated, institute after object carrier is hung before object carrier and hang based on chassis The deflection angle and hoisting moment variable quantity of flange circle are stated, calculates the torsional rigidity of the chassis；
    Evaluation criterion module is formulated, for the biggest lifting capacity based on the crane, supporting leg longitudinal direction span, supporting leg horizontal span Vertical bending rigidity evaluation index is determined with vertical bending rigidity constant, maximum hoisting moment based on the crane and antitorque Stiffness constant determines torsional rigidity evaluation index；
    Evaluation module, for judging according to the vertical bending rigidity evaluation index and the torsional rigidity evaluation index, if institute State vertical bending rigidity and meet the vertical bending rigidity evaluation index, then the vertical bending rigidity is qualified；It is if described antitorque Rigidity meets the torsional rigidity evaluation index, then the torsional rigidity is qualified.
  9. 9. crane chassis rigidity assessment device according to claim 8, it is characterised in that the computing module includes：
    Subelement is obtained, for hanging under load state, respectively after object is left in face of ground and object leaves ground, obtains the method Orchid circle is in the deflection angle of 2 points of vertical displacement and the flange circle on vertical cross-section where crane arm；
    Computation subunit, for calculating the vertical bending rigidity KG=Δ G/ Δs fz, calculate the torsional rigidity KM=Δ M/ Δs θ；Wherein, Δ G is the lifting capacity variable quantity, and Δ M is the hoisting moment variable quantity, Δ fzChange for the vertical displacement Amount, according to formula Δ fz=0.5 (A-C)+0.5 (B-D) is calculated, and Δ θ is the deflection angle, according to formula Δ θ=tan-1 [(B-D)/L- (A-C)/L] * 180/ π is calculated；
    Wherein, A is that the object leaves the flange circle in face of ground in first point of height on vertical cross-section where crane arm Degree, C are the height that the object leaves described first point behind ground, and B leaves the flange circle in face of ground for the object and risen The height of second point, D are the height that the object leaves the second point behind ground on the vertical cross-section of heavy-duty machine arm place.
  10. 10. crane chassis rigidity assessment device according to claim 8, it is characterised in that formulate evaluation criterion module Including：
    Vertical bending rigidity evaluation index determining unit, for determining that the vertical bending rigidity evaluation index isWherein, KGFor the vertical bending rigidity, GmaxFor the biggest lifting capacity, L1To be described Supporting leg longitudinal direction span, L2For the supporting leg horizontal span, KCIt is normal for the vertical bending rigidity constant, the vertical bending rigidity Number KCWith the biggest lifting capacity GmaxVariation tendency it is opposite；
    Torsional rigidity evaluation index determining unit, for determining that the torsional rigidity evaluation index is KG≥Mmax/Kθ, wherein, KM For the torsional rigidity, MmaxFor the maximum hoisting moment, KθFor the torsional rigidity constant, the torsional rigidity constant KθWith The maximum hoisting moment MmaxVariation tendency it is identical.
CN201510980153.1A 2015-12-23 2015-12-23 Crane chassis rigidity assessment method and device Active CN105424501B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510980153.1A CN105424501B (en) 2015-12-23 2015-12-23 Crane chassis rigidity assessment method and device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510980153.1A CN105424501B (en) 2015-12-23 2015-12-23 Crane chassis rigidity assessment method and device

Publications (2)

Publication Number Publication Date
CN105424501A CN105424501A (en) 2016-03-23
CN105424501B true CN105424501B (en) 2018-01-19

Family

ID=55502854

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510980153.1A Active CN105424501B (en) 2015-12-23 2015-12-23 Crane chassis rigidity assessment method and device

Country Status (1)

Country Link
CN (1) CN105424501B (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10185798A (en) * 1996-12-25 1998-07-14 Hitachi Ltd Stress-load environment-resistant-property evaluation method
JP2001004514A (en) * 1999-06-22 2001-01-12 Sumitomo Wiring Syst Ltd Strength evaluating method of bent part and evaluation data measuring jig
JP2002062231A (en) * 2000-08-22 2002-02-28 Bando Chem Ind Ltd Measuring device for belt flexural rigidity
CN103543018A (en) * 2012-07-13 2014-01-29 北汽福田汽车股份有限公司 Analysis method and device of frame load-bearing performance
CN103663199A (en) * 2013-12-13 2014-03-26 中联重科股份有限公司 Hoisting Machinery
CN103778321A (en) * 2014-01-02 2014-05-07 彭雪鹏 Method for analyzing wind action dynamic performance of super high-rise building swing-arm tower crane
CN104102850A (en) * 2014-07-31 2014-10-15 建新赵氏集团有限公司 Fatigue calculation method of car frame under effect of spatial rotation moment
CN104899444A (en) * 2015-06-04 2015-09-09 三峡大学 Determination method for structural parameter of moment limiter of bent board matched with tower crane

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10185798A (en) * 1996-12-25 1998-07-14 Hitachi Ltd Stress-load environment-resistant-property evaluation method
JP2001004514A (en) * 1999-06-22 2001-01-12 Sumitomo Wiring Syst Ltd Strength evaluating method of bent part and evaluation data measuring jig
JP2002062231A (en) * 2000-08-22 2002-02-28 Bando Chem Ind Ltd Measuring device for belt flexural rigidity
CN103543018A (en) * 2012-07-13 2014-01-29 北汽福田汽车股份有限公司 Analysis method and device of frame load-bearing performance
CN103663199A (en) * 2013-12-13 2014-03-26 中联重科股份有限公司 Hoisting Machinery
CN103778321A (en) * 2014-01-02 2014-05-07 彭雪鹏 Method for analyzing wind action dynamic performance of super high-rise building swing-arm tower crane
CN104102850A (en) * 2014-07-31 2014-10-15 建新赵氏集团有限公司 Fatigue calculation method of car frame under effect of spatial rotation moment
CN104899444A (en) * 2015-06-04 2015-09-09 三峡大学 Determination method for structural parameter of moment limiter of bent board matched with tower crane

Also Published As

Publication number Publication date
CN105424501A (en) 2016-03-23

Similar Documents

Publication Publication Date Title
CN111891951B (en) Method and system for monitoring safety of jacking system of tower crane
WO2018014466A1 (en) Drop hammer height adjusting device used for high strain detection of pile foundation
CN103776685A (en) Static force load testing device for concrete beam
CN106081870B (en) A kind of nuclear power station steel dome balances hanging method
CN106289742B (en) The detection experimental rig and test method of high-lift operation hanging cradle safety lock
CN105438985A (en) Metal structure fatigue detecting system and method for off-shored crane
Jia et al. Mechanical properties of right-angle couplers in steel tube–coupler scaffolds
CN105424501B (en) Crane chassis rigidity assessment method and device
CN104359614A (en) Balance force arm pull rod linkage lifting control mechanism of ultra-large torque standard machine
CN110411772A (en) Elevator no-load static state traction test detection method and device
CN107303941A (en) The derrick and its centering installation method of offshore drilling ship
CN102431912A (en) Method for assessing balance weight of tower crane
CN205634605U (en) Device that lifting device shelved
CN203116912U (en) Actively balanced rigid-body kinetic parameter testboard by means of three-wire pendulum
CN103148984B (en) Three-wire torsional pendulum method rigid body dynamic parameter test console
CN101746672A (en) Constant lifting hoisting force hoisting method capable of accurately setting hoisting points
CN103759928B (en) The method of the bearing load of detection hoisting large-size equipment equalizer bar
CN103148985A (en) Kinetic parameter test board of three-wire torsional rigid body with equal radius
CN207346977U (en) A kind of steam turbine rotor lifting tool
CN203781656U (en) Lifting appliance beam structure of crane
CN204689525U (en) A kind of equipment jacking apparatus being convenient to measure
CN203929187U (en) Be applicable to the weighing system of semi-girder assembly
CN102815598A (en) Electro-hydraulic balanced hanging beam
CN103149045B (en) High-stability test desk for rigid body dynamic parameter by using three-wire twist process
CN202063630U (en) Hoisting device for large-scale metal structural members

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20200930

Address after: No.202 Xuanfu street, Xuanhua District, Zhangjiakou, Hebei Province

Patentee after: Hebei Leisa Heavy Construction Machinery Co., Ltd

Address before: 102206 Changping District City, Shahe, Sha Yang Road, Beijing

Patentee before: BEIQI FOTON MOTOR Co.,Ltd.