CN108918115A - Bridge crane no-load load testing machine and method - Google Patents
Bridge crane no-load load testing machine and method Download PDFInfo
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- CN108918115A CN108918115A CN201810569883.6A CN201810569883A CN108918115A CN 108918115 A CN108918115 A CN 108918115A CN 201810569883 A CN201810569883 A CN 201810569883A CN 108918115 A CN108918115 A CN 108918115A
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- load
- bridge crane
- testing machine
- anchor ear
- crane
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses bridge crane no-load load testing machine and methods, wherein bridge crane includes two sides column arranged side by side, the crane girder fixed with two heel posts, the lifting mechanism on crane girder, the lifting mechanism is equipped with suspension hook, and no-load load testing machine includes the anchor ear being fixed on two heel posts, the weight measurement instrument connecting with suspension hook and the rope for connecting anchor ear and weight measurement instrument.The promotion pulling force alternate test counterweight that the present invention utilizes crane self hoisting mechanism to generate, the processes such as preparation, the carrying of test suspension hook counterweight are eliminated, the requirement to experimental enviroment can be reduced and simplifies operation, improves detection efficiency, saves a large amount of manpower and financial resources.
Description
Technical field
The present invention relates to bridge crane load experimental technique fields, and in particular to the bridge cranes load examination such as new installation
Test technology.
Background technique
Bridge crane belongs to special equipment as defined in special equipment catalogue, foundation in China《Special safety equipment method》With
《Safety Supervision on Special Equipment regulations》Regulation, hoisting machinery must make there is qualification Inspection Unit that could deliver after the assay was approved
With.In the inspection detection work of crane, load test is a wherein very important link.According to National Quality Supervision Bureau General
The prison inspection rule and regular inspection rule of promulgation require, and crane necessarily carries out load test.The purpose is to measure its lower flexibility of main girder and
Examine whether crane structure situation meets the contents such as related specifications and standard requirements.However reality is that new clothes crane is big
Majority does not complete still in the newly-built on-site just to have completed, ground is mounted on, and road bumpiness is uneven, and solids loadings transhipment is difficult.
It is made again because the factors such as workshop place space limitation all carry out load test to handling solid mass in the crane that old workshop installs additional
At extreme difficulty.And traditional weight makees load test can occupy a large amount of complete machine Check-Out Time.
Summary of the invention
The technical problem to be solved by the invention is to provide a kind of bridge crane no-load load testing machine and sides
Method saves test period and cost, improves checkability.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：Bridge crane no-load load test dress
Set, be used for bridge crane no-load load test, wherein bridge crane include two sides column arranged side by side, with it is two edge-on
The fixed crane girder of column, the lifting mechanism on crane girder, the lifting mechanism are equipped with suspension hook, and feature exists
In：The no-load load testing machine include the anchor ear being fixed on two heel posts, the weight measurement instrument being connect with suspension hook with
And the rope of connection anchor ear and weight measurement instrument.
Preferably, the lower end of the rope is connected with the tension micromatic setting for adjusting rope tension.
Preferably, the tension micromatic setting is chain block.
Preferably, the weight measurement instrument is electronic scale.
Preferably, the rope uses wirerope or chain.
Preferably, the anchor ear include two pieces of anchor ear clamping plates and by two pieces of anchor ear clamping plates hold tightly holding bolt, it is described
Anchor ear clamping plate is equipped with the Level tune slot passed through for holding bolt tightly.
Preferably, the anchor ear clamping plate is connected with lifting lug.
Preferably, the bottom of two heel posts is equipped with basis, and two sides column bottom is equipped with pre-buried supporting post-rod between basis.
Preferably, the anchor ear equal high arrangement on two heel posts.
The present invention also provides a kind of bridge crane no-load load test method, including rated load test procedure and
Static load test step,
1) rated load is tested：After energization, lifting mechanism lifts rope by suspension hook, reads the data of weight measurement instrument,
Until reaching near 1.0 times of rated loads, after being finely adjusted by tension micromatic setting, accurate mesh is read from weight measurement instrument
Load is marked, qualification determination is rope non-displacement, bridge crane complies with standard, conversely, conclusion (of pressure testing) is unqualified；
2) static load test：After energization, lifting mechanism lifts rope by suspension hook, reads the data of weight measurement instrument, directly
To reaching near 1.25 times of rated loads, after being finely adjusted by tension micromatic setting, accurate mesh is read from weight measurement instrument
Load is marked, qualification determination is rope non-displacement, bridge crane complies with standard, conversely, conclusion (of pressure testing) is unqualified.
The present invention by adopting the above technical scheme, utilizes the promotion pulling force alternate test weight of crane self hoisting mechanism generation
Code eliminates the processes such as preparation, the carrying of test suspension hook counterweight, can reduce the requirement to experimental enviroment and simplify operation, improves
Detection efficiency saves a large amount of manpower and financial resources.
Detailed description of the invention
Present invention will be further described below with reference to the accompanying drawings and specific embodiments：
Fig. 1 is bridge crane no-load load testing machine schematic diagram.
Fig. 2 is the top view of Universal anchor ear device and column cooperation.
Fig. 3 is the main view of Universal anchor ear device and column cooperation.
Fig. 4 is the side view of Universal anchor ear device and column cooperation.
In figure：1, lifting mechanism, 2, electronic scale, 3, crane girder, 4, rope, 5, column, 6, chain block, 7, hang
Ear, 8, anchor ear, 9, basis, 10, pre-buried supporting post-rod, 11, suspension hook, 12, screw rod, 13, nut, 14, anchor ear clamping plate, 15, level
Regulating tank.
Specific embodiment
The technical solution of the embodiment of the present invention is explained and illustrated below with reference to the attached drawing of the embodiment of the present invention, but under
It states embodiment to be merely a preferred embodiment of the present invention, and not all.Based on the implementation example in the implementation mode, those skilled in the art
Obtained other embodiments without making creative work, belong to protection scope of the present invention.
Refering to what is shown in Fig. 1, bridge crane no-load load testing machine, for the load examination of bridge crane no-load
It tests, wherein bridge crane includes two sides column 5 arranged side by side, the crane girder 3 fixed with two heel posts 5, is set to
Lifting mechanism 1 on heavy-duty machine girder 3, the lifting mechanism 1 are equipped with suspension hook 11.
The no-load load testing machine includes the anchor ear 8 being fixed on two heel posts 5, the weight connecting with suspension hook 11
Measuring instrument and the rope 4 for connecting anchor ear and weight measurement instrument.The weight measurement instrument can choose electronic scale 2, and rope 4 can be with
Using wirerope or chain.Certainly, it will be appreciated by persons skilled in the art that weight measurement instrument can be using except electronic scale
The prior art other than 2 is replaced, and is not being repeated one by one specifically, similarly, rope 4 can also use wirerope or chain with
The outer prior art.
Wherein, lifting mechanism 1 positions the middle position that tested crane girder 3 is arranged in, 11 center line of suspension hook with rise
3 perpendicular bisector of heavy-duty machine girder is overlapped, and two ropes 4 are symmetricly set on 3 perpendicular bisector two sides of crane girder.
Relatively difficult during actual tests in view of obtaining target load, the lower end of the rope is connected with adjusting rope
The tension micromatic setting of rope tensility, the tension micromatic setting is chain block 6, certainly, those skilled in the art in embodiment
Member is understood that, it is not excluded that using electric block etc..Chain block 6 is respectively set in two sides below wirerope (chain), benefit
It is finely adjusted with the control of chain block 6, better choice target load.
Referring to figs. 2 to shown in Fig. 4, the anchor ear 8 includes two pieces of anchor ear clamping plates 14 and holds two pieces of anchor ear clamping plates 14 tightly
Holding bolt, holding bolt tightly includes screw rod 12 and nut 13, and the anchor ear clamping plate 14 is equipped with the level passed through for screw rod 12
Regulating tank 15.According to 12 position of size adjustment screw for the column 5 tested, moved left and right with screw rod 12 in Level tune slot 15
Carry out 5 lateral dimension of positioning vertical column, with 13 adjusting screw rod of nut, 12 length with 5 longitudinal size of positioning vertical column.
In addition, the anchor ear clamping plate 14 is connected with lifting lug 7.The tie point of rope 4 and lifting lug 7 is arranged as far as possible in steel construction factory
The lower part of house post 5, the position are the stress supporting point of this experiment.
Test principle is that the suspension hook below weight measurement instrument overlaps two wirerope perhaps chain wirerope or chain
Lower part connect tension micromatic setting, wirerope (chain) end with install and hanging on the anchor ear 8 on steel-structure factory building column 5
Ear 7 is connected, and lifting mechanism 1, which gradually promotes load, can finely tune wirerope (chain in the target reading value shown close to electronic scale 2
Item), obtain targeted test load.
The lifting power that lifting mechanism 1 generates is measured by electronic scale 2, and feeds back to crane control system, and judgement is
No to continue to implement loading action, if power miss the mark load can continue to load, lifting force has made electronic scale 2 reach target load
The reading of lotus, then control loop disconnects raising circuit, cannot continue to load.
The bottom of two heel posts is equipped with basis 9, is equipped with pre-buried supporting post-rod 10 between two sides column bottom basis 9.To
Offset the moment of flexure and shear stress that the opposite horizontal stress of same two column 5 of section during testing generates, it is ensured that workshop is being tested
Safety in the process.Moreover, the anchor ear 8 is arranged at an equal altitude on two heel posts 5, in order to two heel posts, 5 stress equalization.
Static load test device test methods and procedures of the present invention mainly include：
1) rated load is tested：After energization, lifting mechanism 1 lifts wirerope (chain), by the number for reading electronic scale 2
According to until reach near 1.0 times of rated loads, being finely adjusted by chain block 6, it is accurate to obtain from 2 display screen of electronic scale
Target load, qualification determination is wirerope (chain) non-displacement, and for crane girder without deformation, each structural member is abnormal without damage；
Conversely, conclusion (of pressure testing) is unqualified.Observation device deformation essentially according to counterweight test regulatory requirements, using total station,
The technological means such as rangefinder, range estimation are realized.
2) static load test：After energization, lifting mechanism 1 lifts wirerope (chain), by reading the data of electronic scale 2,
Until reaching near 1.25 times of rated loads, it is finely adjusted by chain block 6, obtains accurate target load, qualification determination
For wirerope (chain) non-displacement, each structural member is without obvious crackle, and permanent deformation, paint flake, each mechanism junction does not occur
It loosens or damages, no other damages for influencing performance and safety；Conversely, conclusion (of pressure testing) is unqualified.Observation device deformation
Essentially according to counterweight test regulatory requirements, realized using technological means such as total station, rangefinder, range estimations.
Wherein, the criterion of acceptability of bridge crane rated load and static load test, referring to existing counterweight test standard,
Rated load test with static load test in, the connection method of the instruments such as total station, rangefinder in the prior art use counterweight
It loads identical, is not repeating herein.
The present invention lifts wirerope (chain) using the lifting force of lifting mechanism itself, examination needed for showing to electronic scale terminal
Until testing load, test effect needed for reaching experiment.Without the detection method of counterweight, design is created, is simple and efficient.Compared to use
Test weight is hung to the traditional detection method in the middle part of crane girder, improves detection efficiency, reduces testing cost, saves a large amount of people
Power and material resources realize the transition and upgrade for examining work.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, is familiar with
The those skilled in the art should be understood that the present invention includes but is not limited to attached drawing and interior described in specific embodiment above
Hold.Any modification without departing from function and structure principle of the invention is intended to be included in the range of claims.
Claims (10)
1. bridge crane no-load load testing machine is used for bridge crane no-load load test, wherein overhead traveling crane
Machine includes two sides column arranged side by side, the crane girder fixed with two heel posts, the lifting machine on crane girder
Structure, the lifting mechanism are equipped with suspension hook, it is characterised in that：The no-load load testing machine includes being fixed on two heel posts
Anchor ear, the weight measurement instrument that is connect with suspension hook and the rope for connecting anchor ear and weight measurement instrument.
2. bridge crane no-load load testing machine according to claim 1, it is characterised in that：Under the rope
End is connected with the tension micromatic setting for adjusting rope tension.
3. bridge crane no-load load testing machine according to claim 2, it is characterised in that：The tension fine tuning
Device is chain block.
4. bridge crane no-load load testing machine according to claim 1, it is characterised in that：The weight measurement
Instrument is electronic scale.
5. bridge crane no-load load testing machine according to claim 1, it is characterised in that：The rope uses
Wirerope or chain.
6. according to claim 1 to bridge crane no-load load testing machine described in 5 any one, it is characterised in that：
The anchor ear include two pieces of anchor ear clamping plates and by two pieces of anchor ear clamping plates hold tightly holding bolt, the anchor ear clamping plate be equipped with supply
Hold the Level tune slot that bolt passes through tightly.
7. bridge crane no-load load testing machine according to claim 6, it is characterised in that：The anchor ear clamping plate
It is connected with lifting lug.
8. bridge crane no-load load testing machine according to claim 1, it is characterised in that：The bottom of two heel posts
Portion is equipped with basis, and two sides column bottom is equipped with pre-buried supporting post-rod between basis.
9. bridge crane no-load load testing machine according to claim 1, it is characterised in that：The anchor ear is two
It is arranged at an equal altitude on heel post.
10. bridge crane no-load load test method, including rated load test procedure and static load test step, special
Sign is：
1) rated load is tested：After energization, lifting mechanism lifts rope by suspension hook, reads the data of weight measurement instrument, until
Reach near 1.0 times of rated loads, after being finely adjusted by tension micromatic setting, reads accurate target from weight measurement instrument and carry
Lotus, qualification determination is rope non-displacement, bridge crane complies with standard, conversely, conclusion (of pressure testing) is unqualified；
2) static load test：After energization, lifting mechanism lifts rope by suspension hook, reads the data of weight measurement instrument, until reaching
To near 1.25 times of rated loads, after being finely adjusted by tension micromatic setting, accurate target is read from weight measurement instrument and is carried
Lotus, qualification determination is rope non-displacement, bridge crane complies with standard, conversely, conclusion (of pressure testing) is unqualified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810569883.6A CN108918115A (en) | 2018-06-05 | 2018-06-05 | Bridge crane no-load load testing machine and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810569883.6A CN108918115A (en) | 2018-06-05 | 2018-06-05 | Bridge crane no-load load testing machine and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108918115A true CN108918115A (en) | 2018-11-30 |
Family
ID=64419281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810569883.6A Pending CN108918115A (en) | 2018-06-05 | 2018-06-05 | Bridge crane no-load load testing machine and method |
Country Status (1)
| Country | Link |
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| CN (1) | CN108918115A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114136681A (en) * | 2021-11-29 | 2022-03-04 | 中交二航局第二工程有限公司 | Crane load test device and method |
| CN114136678A (en) * | 2021-11-29 | 2022-03-04 | 中交二航局第二工程有限公司 | Hoisting equipment load test device and load test method |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181130 |
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