CN206248479U - A kind of loading device under long-term, constant load effect - Google Patents

A kind of loading device under long-term, constant load effect Download PDF

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Publication number
CN206248479U
CN206248479U CN201621297415.0U CN201621297415U CN206248479U CN 206248479 U CN206248479 U CN 206248479U CN 201621297415 U CN201621297415 U CN 201621297415U CN 206248479 U CN206248479 U CN 206248479U
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China
Prior art keywords
crossbeam
lever
term
loading device
long
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Expired - Fee Related
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CN201621297415.0U
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Chinese (zh)
Inventor
王占科
高洪波
马鹏
刘涛
赵记领
杜文瀚
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Hainan University
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Hainan University
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Priority to CN201621297415.0U priority Critical patent/CN206248479U/en
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Expired - Fee Related legal-status Critical Current
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Abstract

The utility model discloses a kind of loading device under long-term, constant load effect, include column, crossbeam and lever, its central post is provided with two, the two ends of crossbeam are separately fixed in two root posts, lever is located at the top of crossbeam, wherein on a root post, the other end of lever can be rotated around drive-connecting shaft for one end pivot joint of lever.Two root posts are provided with number row's fixing hole is used for fixed cross beam, and the setting height of crossbeam is adjusted by fixing hole, and crossbeam is a girder steel, and crossbeam is provided with jack for the lever above jacking cross beam.Beneficial effect:Meet applying " laborsaving material-saving, it is slow apply, it is long-term, constant " requirement of load.Principle is apparent, simple structure, easy to use, and on the premise of column stabilization is ensured, whole manually operated, controllability is strong.Cheap, scalability is strong, and the device can change according to sample dimensions, be adjusted.

Description

A kind of loading device under long-term, constant load effect
Technical field
The utility model is related to a kind of loading device, more particularly to a kind of loading under long-term, constant load effect Device.
Background technology
At present, the research in Fracture Mechanics of Concrete field, does not consider temporal correlation, belongs to non-time-varying fracture, also It is " disconnected pressing " being commonly called as, its achievement in research is not particularly suited for the situation under action of long-term load.
First, due to concrete material birth defect and creep, the fracture process and mechanism under action of long-term load Research is just highly desirable to, therefore such research requires that load is " long-term " load.Second, long-term, in order to eliminate load The influence of fluctuation, must be requested that load is invariable, i.e. requirement are the loads of " constant ".3rd, it is well known that when load applies The impact to test specimen should be avoided, therefore, this kind of load is necessary for the load of " slow to apply ".4th, reached by being further applied load Hundreds of kilograms are even more big, and carry out several groups of researchs of test specimen simultaneously within experimental period more long, therefore, required when load applies " laborsaving material-saving ".Integrate, under action of long-term load, Fracture Process of Concrete, the research of mechanism require that this kind of load is " to save Power material-saving, it is slow apply, it is long-term, constant " load.To realize this kind of loading of load, it is necessary to there is the loading dress for meeting and requiring Put.
In the case of short-term laod, existing many ripe loading devices, such as forcing press, jack etc, but it is this kind of plus Carry and put under long-term behavior, due to the reason such as inevitable oil return, lax, experimental period internal loading can be caused to change, not Suitable for the situation of long term constant load.The country not yet have so far a kind of satisfaction " laborsaving material-saving, it is slow apply, it is long-term, constant " Loading device.
The content of the invention
The purpose of this utility model is to solve " laborsaving material-saving, slowly to be applied without meeting in concrete fracture is studied Plus, it is long-term, constant " loading device problem and the loading device under a kind of effect for long-term, constant load for providing.
What the utility model was provided includes column, crossbeam and thick stick for the loading device under long-term, constant load effect Bar, its central post is provided with two, and the two ends of crossbeam are separately fixed in two root posts, and lever is located at the top of crossbeam, lever Wherein on a root post, the other end of lever can be rotated around drive-connecting shaft for one end pivot joint.
Two root posts are provided with number row's fixing hole is used for fixed cross beam, and the setting height of crossbeam is adjusted by fixing hole Section, crossbeam is a girder steel, and crossbeam is provided with jack for the lever above jacking cross beam.
Design of the present utility model and use principle:
First fixed cross beam, the setting height(from bottom) of crossbeam is determined according to test specimen depth of section when using, then using jack, will Lever free end jack-up, is fixed on corresponding position, for the placement of test specimen provides requisite space.Load according to required applying is big It is small, determine resistance arm, by test specimen, simultaneously bearing, Clip Gauge, cushion block are placed in the appropriate location on crossbeam.Then bounce back very heavy Top, relevant position is fixed on by lever free end.Apply weight in lever free end;When weight is heavier, Lever Blocks can be used It is suspended on lifting heavy at the suspension hook of lever end, weight rises rear-mounted in lever end suspension hook, removes, keeps properly hand and pull Cucurbit.Jack is extended slightly, the pin below lever is drawn back, then slow retraction jack, loading device normal work.Receive Return, keep properly jack.Test specimen, bearing can be placed in the diverse location on crossbeam, form different resistance arms, and then obtain It is applied to the different load on test specimen.
The beneficial effects of the utility model:
Meet applying " laborsaving material-saving, it is slow apply, it is long-term, constant " requirement of load.Principle is apparent, simple structure, Easy to use, on the premise of column stabilization is ensured, whole manually operated, controllability is strong.Cheap, scalability is strong, should Device can change according to sample dimensions, be adjusted.
Brief description of the drawings
Fig. 1 is the utility model dimensional structure diagram.
1st, column 2, crossbeam 3, lever 4, fixing hole 5, jack.
Specific embodiment
Refer to shown in Fig. 1:
What the utility model was provided includes column 1, the and of crossbeam 2 for the loading device under long-term, constant load effect Lever 3, its central post 1 is provided with two, and the two ends of crossbeam 2 are separately fixed in two root posts 1, and lever 3 is located at the upper of crossbeam 2 Side, one end of lever 3 is pivotally connected on a root post 1 wherein, and the other end of lever 3 can be rotated around drive-connecting shaft.
Two root posts 1 are provided with number row's fixing hole 4 is used for fixed cross beam 2, and the setting of crossbeam 2 is highly entered by fixing hole 4 Row regulation, crossbeam 2 is a girder steel, and crossbeam 2 is provided with jack 5, for the lever 3 of the top of jacking cross beam 2.
Design of the present utility model and use principle:
First fixed cross beam 2, the setting height(from bottom) of crossbeam 2 is determined according to test specimen depth of section, then using jack when using 5, by the free end jack-up of lever 3, corresponding position is fixed on, for the placement of test specimen provides requisite space.According to required applying Load, determines resistance arm, and by test specimen, simultaneously bearing, Clip Gauge, cushion block are placed in the appropriate location on crossbeam 2.Then Retraction jack 5, relevant position is fixed on by the free end of lever 3.Apply weight in the free end of lever 3;When weight is heavier, can Lifting heavy at the suspension hook of the end of lever 3 is suspended on Lever Blocks, weight rises rear-mounted in the end suspension hook of lever 3, remove, Keep properly Lever Blocks.Jack 5 is extended slightly, the pin below lever 3 is drawn back, then slow retraction jack 5, loading Device normal work.Withdraw, keep properly jack 5.Test specimen, bearing can be placed in the diverse location on crossbeam 2, form different Resistance arm, and then obtain and be applied to different load on test specimen.

Claims (2)

1. the loading device under a kind of effect for long-term, constant load, it is characterised in that:Column, crossbeam and lever are included, Its central post is provided with two, and the two ends of crossbeam are separately fixed in two root posts, and lever is located at the top of crossbeam, one end of lever Wherein on a root post, the other end of lever can be rotated around drive-connecting shaft for pivot joint.
2. the loading device under a kind of effect for long-term, constant load according to claim 1, it is characterised in that:Institute The two root posts stated are provided with number row's fixing hole is used for fixed cross beam, and the setting height of crossbeam is adjusted by fixing hole, horizontal Beam is a girder steel, and crossbeam is provided with jack for the lever above jacking cross beam.
CN201621297415.0U 2016-11-30 2016-11-30 A kind of loading device under long-term, constant load effect Expired - Fee Related CN206248479U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621297415.0U CN206248479U (en) 2016-11-30 2016-11-30 A kind of loading device under long-term, constant load effect

Applications Claiming Priority