CN102778431A - Simple detection device and detection method for detecting slip resistance of scaffold right-angle coupler - Google Patents
Simple detection device and detection method for detecting slip resistance of scaffold right-angle coupler Download PDFInfo
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- CN102778431A CN102778431A CN2012102755420A CN201210275542A CN102778431A CN 102778431 A CN102778431 A CN 102778431A CN 2012102755420 A CN2012102755420 A CN 2012102755420A CN 201210275542 A CN201210275542 A CN 201210275542A CN 102778431 A CN102778431 A CN 102778431A
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- cross bar
- angle coupler
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Abstract
The invention discloses a simple detection device for detecting the slip resistance of a scaffold right-angle coupler, which consists of a testing device and a power loading device. A force transfer device applied onto a cross bar is arranged on the cross bar; the force transfer device is connected with the power loading device; the force transfer device consists of a top plate, two supporting dowel bars arranged between the top plate and the cross bar and force application components which are respectively arranged at the bottoms of the two supporting dowel bars and are movably connected with the cross bar. The invention also provides a method for detecting the slip resistance of the scaffold right-angle coupler. According to the invention, materials required by the simple detection device and the method are all obtained from the construction site; the simple detection device is simple to process and manufacture, has low test cost and obvious test effect and has high cost performance; the stress condition of a connecting joint of the coupler is well simulated; and by analysis on experimental data, each mechanical performance index can be well reflected. The simple detection device is simple to manufacture, is convenient to test, is easy to obtain the materials and can be manufactured by each construction organization; the quality of the coupler of the construction organization can be well controlled; and the safety of a formwork supporting system is ensured.
Description
Technical field
The invention belongs to building machinery checkout equipment technical field; Relate in particular to a kind of through the right-angle coupler connected node is carried out the experimental study that antiskid moves; Inquire into the factor that influences fastener antiskid bearing capacity; For the template steel pipe props up the support integral force analysis stress model is provided, and provides the framing scaffold right-angle coupler antiskid of reference to move performance simple detection device and detection method for actual engineering template steel pipe supported design.
Background technology
The fastener type steel pipe form bracing system is one of the most common form bracing system in China's building operation; Fastener is the main type of attachment of each rod member of form bracing system; Power transmission mainly is to lean on the friction force between fastener and the steel pipe to realize between vertical rod and the horizon bar; Therefore its cling property is an important mechanical performance index, and fastener antiskid bearing capacity is the basis that guarantees co-operation and effective power transmission between fastener and the steel pipe.In construction; If the fastener non-conformity of quality close require or the bolt screw-down torque not in specialized range; The antiskid bearing capacity possibly just not reach requirement, and therefore, this device props up the stressed and power transmission situation of support integral through simulated templates; And different right-angle couplers are applied different moment, the antiskid of contacting piece moves performance and has carried out check more intuitively.
At present, fastener antiskid shift test mainly moves the anti-damage performance pick-up unit (patent No.: 200420054598) carry out, still because its test unit volume is big through the antiskid of framing scaffold right-angle coupler; Test costs an arm and a leg; The test cost is big, therefore can not carry out comprehensively careful detection to the fastener of working-yard; Therefore be necessary to develop a kind of light and handy, simple and easy and better in the simulated templates support system test unit of the stress of fastener substitute large-scale checkout equipment.
Summary of the invention
Deficiency to the prior art existence; Technical matters to be solved by this invention is; That stressing conditions and this device that provide that a kind of testing expenses are low, stringency of test is high, can be good at simulating the fastener connected node made is simple, draw materials easily; Can be good at controlling the quality of construction fastener, guarantee that the framing scaffold right-angle coupler antiskid of the safety of formwork bracing system moves performance simple detection device and detection method.
For solving the problems of the technologies described above; The technical scheme that the present invention taked is: the antiskid of a kind of framing scaffold right-angle coupler moves the performance simple detection device; Also be made up of for it provides the power charger with data acquisition system (DAS) of adjustable predetermined pressure with acting on the proving installation proving installation, said proving installation comprises base, and vertical rod vertically is set on base; Through the right-angle coupler horizontal fixed cross bar is arranged in the said vertical rod; Said right-angle coupler is provided with the detector for displacement measuring of measuring its slip value, on cross bar, is provided with the load transfer device that is applied to it, and said load transfer device is connected with the power charger; Said load transfer device is by top board; Be located at the support transmission rod of two between top board and the said cross bar and be located at bottom the two support transmission rods respectively and the force application part composition of said cross bar flexible connection, said two support transmission rod tops and top board weld, and weld on the said force application part and bottom the support transmission rod; The lower end is connected with the movable contact of cross bar, and the data acquisition system (DAS) of gathering the cross bar slippage is connected with said cross bar.
Above-mentioned framing scaffold right-angle coupler antiskid moves the performance simple detection device, and said base and vertical rod welding are provided with the stiffening rib that is connected with vertical rod on base, and said stiffening rib is vertical with the cross bar horizontal direction.
Above-mentioned framing scaffold right-angle coupler antiskid moves the performance simple detection device, and said two support the two ends that transmission rod is located at cross bar respectively, and said two support dowel spacings are 150mm.
Above-mentioned framing scaffold right-angle coupler antiskid moves the performance simple detection device, and said top board is a channel-section steel.
Above-mentioned framing scaffold right-angle coupler antiskid moves the performance simple detection device, and said detector for displacement measuring is an electronic extensometer of being located at the right-angle coupler bottom, and said electronic extensometer is connected with suspension extensometer support.
Above-mentioned framing scaffold right-angle coupler antiskid moves the performance simple detection device, and said force application part is set to the right cylinder perpendicular to cross bar, said right cylinder along the length of axis greater than the diameter that supports transmission rod.
A kind ofly use the antiskid of framing scaffold right-angle coupler to move the performance simple detection device to detect the method that the antiskid of framing scaffold right-angle coupler moves performance, comprise the steps:
(1), adopt Digital Electronic Torque Wrench to put on the right-angle coupler, vertical rod, cross bar and right-angle coupler are fixed in one;
(2), adopt the displacement control loaded, control power charger adds 1.0KN in advance, holds lotus 2min, whether normal, then unloading if detecting power charger, data acquisition system (DAS) and electronic extensometer work;
(3), (GB15381-2006) formally load detection according to " steel pipe scaffold standard ", add 1.0KN at first in advance, the numerical value with data acquisition system (DAS) makes zero then;
(4), load, loading velocity is 300N/s～400N/s, continuous acquisition, the gross load of final test has comprised preload 1.0KN;
(5), stopping the loading standard is: the cross bar displacement surpasses 20mm, and perhaps test specimen destroys, and through the data analysis result, the antiskid that draws right-angle coupler moves performance data.
The advantage that framing scaffold right-angle coupler of the present invention antiskid moves performance simple detection device and detection method is:
1, economic effect.Material required for the present invention is all obtained from the working-yard, and processing and fabricating is simple, and testing expenses are low, and test effect is obvious, with traditional comparing with full hall framing scaffold form bracing system, has high performance price ratio.
2, test effect.This device has well been simulated the stressing conditions of fastener connected node, and through analysis of experimental data, each item mechanical performance index all can well reflect.
3, the value of applying.This device is made simple, and test is convenient, and draws materials easily, and each unit in charge of construction all can make, and the quality of ability better controlled unit in charge of construction fastener has guaranteed the safety of formwork bracing system.
Description of drawings
Fig. 1 is an one-piece construction synoptic diagram of the present invention;
Fig. 2 is the side-looking structural representation of proving installation of the present invention.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is explained further details;
Like Fig. 1, shown in 2; The antiskid of a kind of framing scaffold right-angle coupler moves the performance simple detection device, also is made up of for it provides the power charger 2 with data acquisition system (DAS) of adjustable predetermined pressure with acting on the proving installation 1 proving installation 1, and proving installation 1 comprises base 11; Vertical rod 12 vertically is set on base 11; Base 11 welds with the bottom of vertical rod 12, in vertical rod 12, through right-angle coupler 13 horizontal fixed cross bar 14 is arranged, and right-angle coupler 13 is provided with the detector for displacement measuring 15 of measuring its slip value; On base 11, be provided with the stiffening rib 16 that is connected with vertical rod 12, stiffening rib 13 is vertical with the horizontal direction of cross bar 14.Be provided with the load transfer device 17 that acts on the cross bar 14 on the cross bar 14; Load transfer device 17 is connected with power charger 2; Load transfer device 17 is by top board 171; Be located at two between top board 171 and the cross bar 14 and support transmission rod 172 and be located at two support transmission rod 172 bottoms respectively and force application part 173 compositions of cross bar 14 flexible connections, top board 171 is a channel-section steel.All weld with top board 171 at the top of two support transmission rods 172, and two support the two ends that transmission rods 172 are located at cross bar 14 respectively, and the spacing between the two support transmission rods 172 is 150mm.The upper end of force application part 173 and the bottom welding of supporting transmission rod 172, the lower end is connected with cross bar 14 movable contacts, forms the line contact each other, and the data acquisition system (DAS) 18 of gathering the cross bar slippage is connected with cross bar 14.Detector for displacement measuring 15 is an electronic extensometer of being located at the bottom of right-angle coupler 13, and electronic extensometer is connected with suspension extensometer support 151.Force application part 173 is set to the right cylinder perpendicular to cross bar 14, and greater than the diameter that supports transmission rod 172, this right cylinder adopts the reinforcing bar of φ 25 to process to right cylinder along the length of axis.
Experiment loading unit adopts 2 tons hydraulic dynamometer, and the acquisition system that the slippage of cross bar 14 adopts testing machine to carry is gathered, and right-angle coupler 13 slippages employing range is that the electronic extensometer of 5mm is gathered.
This experimental provision has been considered the influence of eccentric load in loading procedure; Mainly taked following two aspects that it is controlled: the first, 10mm steel plate of welding and is provided with ribbed stiffener 16 as base 11 in the bottom of vertical rod 12, and ribbed stiffener 16 is provided with the level of direction and cross bar 14 to vertical; And with base 11 spot welding; Prevent to produce welding stress, cause base 11 warpages, influence test accuracy.Ribbed stiffener 16 mainly prevents in loading procedure, to occur test unit and topples, and causes test failure; The second, made the load transfer device 17 that is welded as a whole by two steel pipes and channel-section steel has been arranged; Two steel pipes are welded on the channel-section steel, and steel pipe spacing 150mm acts directly on the cross bar 14; Steel pipe does not weld with cross bar 14, can guarantee that like this cross bar 14 receives the load effect.During loading, the testing machine loading end contacts with channel-section steel, and the assurance level loads.Demarcate in advance before loading, guaranteed the accuracy of loading position.
A kind ofly use the antiskid of framing scaffold right-angle coupler to move the performance simple detection device to detect the method that the antiskid of framing scaffold right-angle coupler moves performance, comprise the steps:
(1), adopt Digital Electronic Torque Wrench to put on the right-angle coupler 13, vertical rod 12, cross bar 14 are fixed in one with right-angle coupler 13;
(2), adopt the displacement control loaded, control power charger adds 1.0KN in advance, holds lotus 2min, whether normal, then unloading if detecting power charger 2, data acquisition system (DAS) 18 and electronic extensometer work;
(3), (GB15381-2006) formally load detection according to " steel pipe scaffold standard ", add 1.0KN at first in advance, the numerical value with data acquisition system (DAS) 18 makes zero then;
(4), load, loading velocity is 300N/s～400N/s, continuous acquisition, the gross load of final test has comprised preload 1.0KN;
(5), stopping the loading standard is: cross bar 14 displacements surpass 20mm, and perhaps test specimen destroys, and through the data analysis result, the antiskid that draws right-angle coupler 13 moves performance data.
Certainly, above-mentioned explanation is not to be limitation of the present invention, and the present invention also is not limited to above-mentioned giving an example; Those skilled in the art; In essential scope of the present invention, the variation of making, remodeling, interpolation or replacement all should belong to protection scope of the present invention.
Claims (7)
1. framing scaffold right-angle coupler antiskid moves the performance simple detection device; Also be made up of for it provides the power charger with data acquisition system (DAS) of adjustable predetermined pressure with acting on the proving installation proving installation, said proving installation comprises base, and vertical rod vertically is set on base; Through the right-angle coupler horizontal fixed cross bar is arranged in the said vertical rod; Said right-angle coupler is provided with the detector for displacement measuring of measuring its slip value, on cross bar, is provided with the load transfer device that is applied to it, and said load transfer device is connected with the power charger; It is characterized in that: said load transfer device is by top board; Be located at the support transmission rod of two between top board and the said cross bar and be located at bottom the two support transmission rods respectively and the force application part composition of said cross bar flexible connection, said two support transmission rod tops and top board weld, and weld on the said force application part and bottom the support transmission rod; The lower end is connected with the movable contact of cross bar, and the data acquisition system (DAS) of gathering the cross bar slippage is connected with said cross bar.
2. framing scaffold right-angle coupler according to claim 1 antiskid moves the performance simple detection device, it is characterized in that: said base and vertical rod welding, on base, be provided with the stiffening rib that is connected with vertical rod, and said stiffening rib is vertical with the cross bar horizontal direction.
3. framing scaffold right-angle coupler according to claim 2 antiskid moves the performance simple detection device, it is characterized in that: said two support the two ends that transmission rod is located at cross bar respectively, and said two support dowel spacings are 150mm.
4. framing scaffold right-angle coupler according to claim 3 antiskid moves the performance simple detection device, it is characterized in that: said top board is a channel-section steel.
5. framing scaffold right-angle coupler according to claim 4 antiskid moves the performance simple detection device, it is characterized in that: said detector for displacement measuring is an electronic extensometer of being located at the right-angle coupler bottom, and said electronic extensometer is connected with suspension extensometer support.
6. move the performance simple detection device according to claim 3,4 or 5 described framing scaffold right-angle coupler antiskids, it is characterized in that: said force application part is set to the right cylinder perpendicular to cross bar, said right cylinder along the length of axis greater than the diameter that supports transmission rod.
7. one kind is used claim 1,2 or 3 described devices to detect the method that the antiskid of framing scaffold right-angle coupler moves performance, it is characterized in that: comprise the steps:
(1), adopt Digital Electronic Torque Wrench to put on the right-angle coupler, vertical rod, cross bar and right-angle coupler are fixed in one;
(2), adopt the displacement control loaded, control power charger adds 1.0KN in advance, holds lotus 2min, whether normal, then unloading if detecting power charger, data acquisition system (DAS) and electronic extensometer work;
(3), (GB15381-2006) formally load detection according to " steel pipe scaffold standard ", add 1.0KN at first in advance, the numerical value with data acquisition system (DAS) makes zero then;
(4), load, loading velocity is 300N/s～400N/s, continuous acquisition, the gross load of final test has comprised preload 1.0KN;
(5), stopping the loading standard is: the cross bar displacement surpasses 20mm, and perhaps test specimen destroys, and through the data analysis result, the antiskid that draws right-angle coupler moves performance data.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012102755420A CN102778431A (en) | 2012-08-06 | 2012-08-06 | Simple detection device and detection method for detecting slip resistance of scaffold right-angle coupler |
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| CN2012102755420A CN102778431A (en) | 2012-08-06 | 2012-08-06 | Simple detection device and detection method for detecting slip resistance of scaffold right-angle coupler |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103247145A (en) * | 2013-04-24 | 2013-08-14 | 浙江自力建设集团有限公司 | Fastener slipping monitoring and early warning device for fastener-type steel tube formwork |
| CN103394554A (en) * | 2013-08-07 | 2013-11-20 | 中国华西企业有限公司 | Automatic detecting maintaining device of construction scaffold steel tubes |
| CN105067513A (en) * | 2015-08-17 | 2015-11-18 | 天津大学 | Fastener type scaffold skidproof and damage-resistant testing device |
| CN108061645A (en) * | 2017-11-02 | 2018-05-22 | 宝沃汽车（中国）有限公司 | For detecting the method and apparatus of fastener connection reliability |
| CN109163976A (en) * | 2018-08-22 | 2019-01-08 | 深圳市市政工程总公司 | Scaffold safe condition mechanical test method |
| KR101954829B1 (en) * | 2018-07-27 | 2019-03-06 | 목포대학교산학협력단 | Use of the slip-testing device on the scaffold and the sliding test method of the scaffolding coupler |
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| CN202041452U (en) * | 2011-03-08 | 2011-11-16 | 西安理工大学 | Testing clamp for anti-sliding performance of right angle building fastener |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103247145A (en) * | 2013-04-24 | 2013-08-14 | 浙江自力建设集团有限公司 | Fastener slipping monitoring and early warning device for fastener-type steel tube formwork |
| CN103394554A (en) * | 2013-08-07 | 2013-11-20 | 中国华西企业有限公司 | Automatic detecting maintaining device of construction scaffold steel tubes |
| CN103394554B (en) * | 2013-08-07 | 2015-03-25 | 中国华西企业有限公司 | Automatic detecting maintaining device of construction scaffold steel tubes |
| CN105067513A (en) * | 2015-08-17 | 2015-11-18 | 天津大学 | Fastener type scaffold skidproof and damage-resistant testing device |
| CN108061645A (en) * | 2017-11-02 | 2018-05-22 | 宝沃汽车（中国）有限公司 | For detecting the method and apparatus of fastener connection reliability |
| CN108061645B (en) * | 2017-11-02 | 2020-08-18 | 宝沃汽车（中国）有限公司 | Method and apparatus for detecting fastener connection reliability |
| KR101954829B1 (en) * | 2018-07-27 | 2019-03-06 | 목포대학교산학협력단 | Use of the slip-testing device on the scaffold and the sliding test method of the scaffolding coupler |
| CN109163976A (en) * | 2018-08-22 | 2019-01-08 | 深圳市市政工程总公司 | Scaffold safe condition mechanical test method |
| CN109163976B (en) * | 2018-08-22 | 2021-09-24 | 深圳市市政工程总公司 | Scaffold safety state mechanical property test method |
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Application publication date: 20121114 |