CN201173883Y - Stationary type reinforcing steel bar cold bent test device - Google Patents
Stationary type reinforcing steel bar cold bent test device Download PDFInfo
- Publication number
- CN201173883Y CN201173883Y CNU2008200715396U CN200820071539U CN201173883Y CN 201173883 Y CN201173883 Y CN 201173883Y CN U2008200715396 U CNU2008200715396 U CN U2008200715396U CN 200820071539 U CN200820071539 U CN 200820071539U CN 201173883 Y CN201173883 Y CN 201173883Y
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- test device
- reinforcing bar
- type reinforcing
- bar cold
- steel bar
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Abstract
The utility model provides a fixed-type reinforcing bar cold bending test device, belonging to the architectural engineering technical field. The device is characterized in that two support rollers are respectively fixed on a bottom plate through end plates; two end plates are fixed through a pull rod; opposite surfaces of the end plates are provided with vertical plates. The device has the advantages that: 1) accuracy is raised, and calculation-operation errors are eliminated; 2) labor intensity is lightened; 3) labor productivity is raised; 4) the device is convenient to use and good in universality as well as safety; 5) the device is simple to process and low in cost.
Description
Technical field
The utility model belongs to construction engineering technical field.
Background technology
Reinforcing bar has remedied concrete defective with the tensile strength of excellence, forms reinforced concrete widespread usage in building structure with the two co-operation in engineering construction.The performance of reinforcing bar directly influences the quality of construction quality.
The mechanical property of reinforcing bar, shop characteristic mainly comprise stretching and two aspects of clod wash.Wherein cold-bending property is crooked deformability and the defective that shows that steel bear the regulation degree of crook at normal temperatures, is the important process performance of steel.
Can not only check steel to adapt to cold worked ability and show that internal defects of steel is (as outside aliquation by cold bend test, inner slag inclusion etc.) situation, and since during clod wash the test specimen middle part be subjected to the turn of bilge position to be subjected to drift extruding and complexing action crooked and that shear, be to investigate steel develop plastic deformation ability under complex stress condition a index.So cold bend test is a kind of strict check to steel product quality.
Cold bend test is to carry out on universal testing machine, be equipped with bending apparatus on the universal testing machine testing machine lower platen, building iron vice commonly used props up the roll-type bend test device, and this device is made up of lower platen dovetail stopper slot, two branched roller seats (containing dovetail sliding shoe, caging bolt), a roller, flexible connection pull bar, scale etc.See Fig. 1
According to " reinforced concrete hot calendering round bar " (GB 13013-91), " reinforced concrete hot rolled ribbed steel bar " (GB 1499-1998) and " metal material bend test method " (GB/T 232-1999).Test.
(1), this clod wash device experiment step is:
1) according to reinforcing bar classification and diameter and select pressure head and be installed on the universal testing machine; Calculate two roller spacings according to reinforcing bar classification, diameter and pressure head diameter; Promote two branched roller seats, adjust two roll gaps.Being that the center is symmetrical respectively at this moment with the pressure head adjusts two branched roller seats to the right place by the both sides scale firm roller caging bolt;
2) sample is placed on two roller tops, steadily applies test power up to predetermined angular by certain flexual center diameter;
3) after the removal test power, check distortion and defective, carry out result evaluation by relevant regulations.
(2), the weak point of this clod wash device is:
1) testing crew will be remembered a roll gap of a roller distance computation formula or all size reinforcing bar correspondence, might influence test findings or destructive test machine as miscount, and the service technique level of testing crew is had relatively high expectations.
2) in the process of the test, need different according to specification, diameter, flexual center and the weldment of reinforcing bar, adjust a roll gap one by one, also to there be two people that four screws on the former clod wash bearing two rhizoid bars of universal testing machine are carried out the slowly turn-knob adjustment of long and short distance, the test of one in every work group time consuming timely reaches 15 minutes.Not only loaded down with trivial details time-consuming, and work efficiency is low.It is loaded down with trivial details to regulate a roll gap, wastes time and energy, and efficient is low.
3) in the test, because the surface of reinforced bar oxide layer comes off and directly enters in the dovetail groove, cause each test front and back all must clear up dovetail groove, the time needs 5 minutes.Otherwise can't adjust two roller spacings.
4) original device poor durability, connecting rod, caging bolt turnover rate height.
Summary of the invention
The purpose of this utility model is:
A kind of fixed reinforcing bar cold bend test device is provided, and it can be accurately, easily and quickly reinforcing bar is tested.
The technical solution of the utility model is:
Two rollers are fixed on the base plate by end plate respectively, fix by pull bar between two end plates, and the opposite between end plate is provided with riser.
The beneficial effects of the utility model are:
1) improved accuracy, eliminated calculating and operate miss: this device need only corresponding corresponding reinforcing bar classification and diameter, needn't calculate two roller spacings; This device must not adjusted two roll gaps.Thereby calculating and operate miss have been eliminated.
2) alleviated labour intensity: when testing, needn't adjust that roll gap brought at every turn: unclamp 4 caging bolts (after fastening again), 2 connect 4 nuts on the pull bar (after fastening again), promote two branched roller seats, adjustment center respectively symmetry by the both sides scale two branched roller seats are adjusted to the right place etc.;
3) raise labour productivity: make this device do a cold bend test and only need 1 minute, compare, raise the efficiency more than 10 times with the movable cold bend test device of traditional universal testing machine;
4) easy to use, versatility, security are good: this device design is light, can be general on A, Type B universal testing machine and big stroke pressing machine; Adopt permanent welding to keep in repair, safe and reliable;
5) processing of this device is simple, expense is cheap; Service technique level to testing crew is less demanding, does not need the professional training can be on duty.
Description of drawings
The movable bending apparatus structural representation of Fig. 1 universal testing machine testing machine;
The structural representation of the fixed bending apparatus of Fig. 2;
Fig. 3 cold bend test reinforcing bar sample is placed synoptic diagram;
Fig. 4 cold bend test synoptic diagram.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further:
As shown in Figure 1, the 1st, a roller, the 2nd, caging bolt, the 3rd, scale, the 4th, following pressure pad, the 5th, cylinder lever connecting rod, the 6th, branched roller seat, the 7th, dovetail groove.
As shown in Figure 2, the 1st, a roller, the 8th, end plate, the 9th, base plate, the 10th, riser, the 11st, pull bar, the 12nd, gusset plate.
After this device was welded to each other by end plate, riser, base plate, gusset plate and pull bar, an assembling roller formed.
1) this cold bend test device is a fixing roll-type, and a quantity complete set is that 7 devices are formed.Contain all reinforcing bars in (GB 13013-91) and (GB 1499-1998), meet " metal material bend test method " (GB/T 232-1999) requirement;
2) each device reinforcing bar of respective straight classification and diameter in corresponding (GB 13013-91) and (GB 1499-1998) respectively, each device have the respective classes that marked this dress correspondence on different numberings, the nameplate and the reinforcing bar of diameter;
When 3) testing,, select corresponding clod wash device for use, no longer calculate and adjust a roller spacing according to the classification and the diameter of reinforcing bar;
4) the reinforcing bar sample is placed on two roller tops, steadily applies test power up to predetermined angular, see Fig. 3, Fig. 4 by the bending of certain flexual center diameter.
Claims (1)
1, a kind of fixed reinforcing bar cold bend test device, it is characterized in that: two rollers are fixed on the base plate by end plate respectively, fix by pull bar between two end plates, and the opposite between end plate is provided with riser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200715396U CN201173883Y (en) | 2008-03-19 | 2008-03-19 | Stationary type reinforcing steel bar cold bent test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200715396U CN201173883Y (en) | 2008-03-19 | 2008-03-19 | Stationary type reinforcing steel bar cold bent test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201173883Y true CN201173883Y (en) | 2008-12-31 |
Family
ID=40201010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200715396U Expired - Fee Related CN201173883Y (en) | 2008-03-19 | 2008-03-19 | Stationary type reinforcing steel bar cold bent test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201173883Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103056202A (en) * | 2012-12-26 | 2013-04-24 | 江苏沪宁钢机股份有限公司 | Press machine device for bending deformed steel bar in shape of Chinese character 'ji' |
| CN103994932A (en) * | 2014-05-12 | 2014-08-20 | 南通市建筑科学研究院有限公司 | A steel bar bending tester |
| CN104458437A (en) * | 2013-09-17 | 2015-03-25 | 珠海格力电器股份有限公司 | Testing device for testing bending resistance and stress resistance of electronic element |
-
2008
- 2008-03-19 CN CNU2008200715396U patent/CN201173883Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103056202A (en) * | 2012-12-26 | 2013-04-24 | 江苏沪宁钢机股份有限公司 | Press machine device for bending deformed steel bar in shape of Chinese character 'ji' |
| CN104458437A (en) * | 2013-09-17 | 2015-03-25 | 珠海格力电器股份有限公司 | Testing device for testing bending resistance and stress resistance of electronic element |
| CN103994932A (en) * | 2014-05-12 | 2014-08-20 | 南通市建筑科学研究院有限公司 | A steel bar bending tester |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081231 Termination date: 20160319 |