CN102706738A - Clamp for mechanical property test of welding of steel-bar truss - Google Patents
Clamp for mechanical property test of welding of steel-bar truss Download PDFInfo
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- CN102706738A CN102706738A CN2012101958095A CN201210195809A CN102706738A CN 102706738 A CN102706738 A CN 102706738A CN 2012101958095 A CN2012101958095 A CN 2012101958095A CN 201210195809 A CN201210195809 A CN 201210195809A CN 102706738 A CN102706738 A CN 102706738A
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Abstract
The invention discloses a clamp for the mechanical property test of welding of a steel-bar truss, belongs to the device for fixing a test member, and particularly relates to a clamp for the shear resistance test of welding points of the steel-bar truss. The clamp is characterized by comprising a main hook, a positioning shaft, a sliding block, an adjusting bolt and a base which are connected, wherein the front end of the main hook is provided with a hook head which is provided with a sample opening groove, and the rear end of the main hook is provided with a positioning shaft sleeve; the positioning shaft connected with the sliding block is arranged in the positioning shaft sleeve in a sliding manner; the sliding block is arranged in a rectangular sliding groove arranged on the base in a sliding manner, and is connected with the adjusting bolt arranged on the side wall of the rectangular sliding groove; and a fixed plate is arranged under the base and is connected with a drawing machine. By utilizing the clamp disclosed by the invention, the test is carried out according to the steps of manufacturing a sample, installing the clamp, clamping the sample, adjusting the main hook, drawing and evaluating yield. The clamp disclosed by the invention has the advantages that the concept is novel, the structure is simple, the use is convenient and reliable, multiple purposes are achieved by one clamp and the application to the mechanical property test of multi-specification trusses can be achieved; and since the sample is manufactured at normal temperature, the operation is simple and convenient, the consumed time is less, the measured data is real, accurate and reliable, the efficiency is high and no energy consumption is caused.
Description
Technical field
The invention belongs to the device of fixation test member, relate in particular to steel bar girder pad shearing resistance test clamp tool.
Background technology
Steel bar girder product welding quality directly influences the usability of truss, must the shearing resistance of pad be detected after the truss welding, can come into operation after qualified.Because after the truss welding, the certain included angle that has between abdomen muscle and the string muscle, and along with the variation of truss depth, its angle also has nothing in common with each other, and this brings difficulty with regard to the mechanical test to the truss pad.Current in detecting pad shearing resistance process, on the string muscle of the pad that is detected, add earlier test reinforcing bar that becomes 180 degree with the abdomen muscle of weldering; During detection, the termination of reinforcing bar sample is clipped in testing machine one end, and the test steel bar end that is connected with the string muscle is clipped in the other end of testing machine; Drawn makes the pad sealing-off of surveying, thereby records the shearing resistance data of pad.The defective that exists is: add weldering test reinforcing bar at the string muscle, secondary welding produces very big influence to the shear behavior of survey pad, can not accurately reflect the shearing resistance of the pad of surveying, and causes measurement data inaccurate; Each detection all will add weldering test reinforcing bar, and must guarantee to add the shearing resistance that the shearing resistance of welding the solder joint of testing reinforcing bar is greater than the pad of surveying; Need welding gear, consumes energy, the running time is long, and testing efficiency is low.Therefore, thirst for having a kind of test fixture that can be used to measure the steel bar girder pad shearing resistance of differing heights.
Summary of the invention
In order to overcome the defective that prior art exists, the purpose of this invention is to provide a kind of steel bar girder welding mechanics performance test and use anchor clamps, what guarantee abdomen muscle chord muscle during test receives force direction on same straight line, and test figure is true, accurate, reliable; No energy consumption, fast detecting improves detection efficiency.
Steel bar girder welding mechanics performance test is used anchor clamps; Characteristics are that these anchor clamps are connected and composed by main hook, locating shaft and slide block, adjusting bolt and base, and described main hook front end is established gib head, and gib head is established the sample open slot; Steel bar girder string muscle places the gib head below, and the abdomen muscle places the sample open slot; The position axle sleeve is set in the rear end, and the locating shaft cunning that connects with slide block is contained in the axle sleeve of location, and locating shaft is that main hook provides location and rotation, and main hook slides around locating shaft and rotates; The slide block cunning is contained in the rectangle chute that base establishes, and is connected with adjusting bolt on being located at the rectangle chute wall, rotates and regulates bolt; Slide block is along rectangle chute move left and right; Locating shaft and main hook also move thereupon, move with main hook through slide block and rotate around locating shaft, guarantee the test specimen stretching of can hanging down; Base is divided into fixed head and is connected with cupping machine.During detection, cupping machine one end clamping abdomen muscle, the other end is clamped the fixed head of base, and drawn makes the solder joint sealing-off of surveying, and records the shearing resistance data of pad.
The present invention further improves, and the rectangle chute is established on described base top, and the slide block cunning is decorateeed in the chute; Chute wall is established the adjusting bolt hole and is cooperated with the adjusting bolt, and the adjusting bolt that has handle places regulates bolt hole; Screw is established in the fixed head bottom that base is established, and plate washer is by being bolted on the fixed head, make be connected with cupping machine firm.
The present invention further improves; Described main hook is approximate obtuse triangle, and gib head is established in the front, elongated boss; Strip projected parts is established in the boss outer; The sample open slot is established in the gib head stage casing, its angle=35 ~ 73 °, and the steel bar girder sample that is suitable for angle between abdomen muscle and the string muscle and is 35 ~ 73 ° carries out tension test; Cylindrical location axle sleeve is established in the main hook rear end, and locating shaft is loaded in it.
The present invention further improves, and described slide block is a rectangular parallelepiped, and oppositely " T " connected in star is established in the upper end, and screw is established in the slide block outside, and bolt passes the slide block baffle plate of being wider than the chute width and is fixed on the slide block, and anti-limited slip block comes off; Step and locating shaft are established in the slide block inboard, and step width had both hindered a grade slide block and come off greater than the chute width, again main hook and base was separated; Locating shaft is located on the slide block step, and diameter matches with the location sleeve diameter that main hook is established, and the locating shaft cunning is contained in the axle sleeve of location, and by locating shaft plate washer and bolt, main hook rotates around locating shaft; Slide block is constrained in the rectangle chute by slide block plate washer and step, horizontally slips.
Last improvement of the present invention, described adjusting bolt cooperates with the adjusting bolt hole that base is established, and front end is established " T " shape connector, cooperates, links together with reverse " T " connected in star that slide block is established; Handle is established in the rear end, rotates and regulates bolt, drives slide block and moves.
Use anchor clamps of the present invention, when carrying out steel bar girder welding mechanics performance test, carry out according to the following steps:
1, under the sample production normal temperature, adopts mechanical sampling, have the string muscle and the abdomen muscle of the pad of surveying in the intercepting steel bar girder;
2, the fixed head of sectional fixture base plate is fixed on an end of cupping machine;
3, the string muscle that clamps the sample truss places the gib head lower edge, is blocked by strip projected parts, and the abdomen muscle places the sample open slot, and the abdomen muscle is fixed on the cupping machine other end;
4, the adjustment main hook rotate to be regulated bolt, drives slide block, locating shaft and main hook and moves to left or move to right, and main hook is done the self-adaptation rotation, and the force direction that receives of abdomen muscle and string muscle is coexisted on the straight line, guarantees the sample stretched vertically;
5, stretching starts the cupping machine tension test, until abdomen muscle and string muscle sealing-off; Record mechanics data;
6, product quality judge disposal data and required standard contrast are passed judgment on.
Compared with prior art, advantage is: novel, simple in structure, easy to use, reliable, the many usefulness of a tool can be used for plurality of specifications truss mechanical test; Adopt normal temperature to make sample, easy and simple to handle, consuming time few, measurement data truly, accurately and reliably, efficient is high, goes back energy free consumption.
Description of drawings
The contrast accompanying drawing is described further the present invention below.
Fig. 1 is that steel bar girder welding mechanics performance test is used the clamp structure synoptic diagram.
Fig. 2 is the side view of Fig. 1.
Fig. 3 is Fig. 1 view afterwards.
Embodiment
Can find out that by Fig. 1, Fig. 2 and Fig. 3 steel bar girder welding mechanics performance test is connected and composed by main hook 1, locating shaft 2 and slide block 3, adjusting bolt 4 and base 5 with anchor clamps; The main hook front end is established rectangular shape gib head 6; Gib head is established sample open slot 7; Cylindrical location axle sleeve 8 is established in the rear end, and locating shaft is connected with slide block, and the locating shaft cunning is contained in the axle sleeve of location.The slide block cunning is contained in the rectangle chute 9 that base establishes, and is connected with adjusting bolt on being located at the rectangle chute wall.Base is divided into fixed head 10, is connected with cupping machine (not marking among the figure).
It can also be seen that by Fig. 1, Fig. 2 closed rectangle chute is established on base top, the slide block cunning is loaded in the chute, and rectangle chute right side wall is established and regulated bolt hole (not marking among the figure); Base is divided into fixed head, and screw (not marking among the figure) is established in the fixed head lower end, and plate washer 11 is by being bolted on the fixed head.
It can also be seen that by Fig. 1, Fig. 2 and Fig. 3 main hook is approximate obtuse triangle, gib head is established in the front, and elongated, strip projected parts (among the figure mark) is established in the boss outer, and dihedral sample open slot is established in the gib head stage casing, both sides angle=35 ~ 73 of groove °.Cylindrical location axle sleeve 8 is established in the main hook rear end, and locating shaft is loaded on wherein.
It can also be seen that by Fig. 1 Fig. 2 and Fig. 3 slide block 3 is a rectangular parallelepiped, oppositely " T " connected in star is established in the upper end, and screw (not marking among the figure) is established in the slide block outside, is wider than the chute baffle plate 12 of chute width, and by being bolted on the slide block, anti-limited slip block comes off.Step 13 and locating shaft are established in the slide block inboard, and step width is greater than the chute width, and resistance shelves slide block comes off, and again main hook and base is separated.Locating shaft is located on the step of slide block, and the location sleeve diameter of establishing on diameter and the main hook matches, and the locating shaft cunning is contained in the axle sleeve of location.Screw is established in the locating shaft outer end, and locating shaft plate washer 14 stops locating shaft to come off by being bolted on the axle head of location.Slide block is constrained in the rectangle chute by slide block baffle plate and step.
Can find out by Fig. 1 and Fig. 3, regulate bolt and cooperate, regulate the bolt front end and establish " T " shape connector, cooperate, link together with reverse " T " connected in star that slide block is established with the adjusting bolt hole that base is established; Regulate the bolt rear end and establish grip hole, handle 15 is packed in the grip hole (not marking among the figure).
Truss welding mechanics performance test
With muscle diameter 10 mm that wind up, abdomen muscle diameter 6mm, lower edge muscle diameter 8mm, the shearing resistance value is that the steel bar girder CRB550 of 8490N is an example, carries out mechanical property test.
(1) the sample production height is the steel bar girder of 190mm, the abdomen muscle and muscle angle 62 degree that wind up, and by shearing resistance sample sampling rule tape welding point sample of intercepting on winding up, abdomen muscle length is no less than 100 mm, and the muscle that winds up is blocking apart from solder joint 150mm place.
(2) sectional fixture anchor clamps base plate is fixed on cupping machine one end.
(3) clamp sample string muscle and place the gib head lower edge, the abdomen muscle places the sample open slot, and the abdomen muscle is fixed on the cupping machine other end.
(4) the adjustment main hook rotate to be regulated bolt, locating shaft rotation center 19 mm that move right, and limit, oblique angle, anchor clamps inclination angle is 62 degree, guarantees that the abdomen muscle receives force direction and anchor clamps to receive force direction on same straight line.
(5) stretching starts the cupping machine tension test, until abdomen muscle and string muscle sealing-off; The test specimen related data is listed in the table 1, and the data of test are listed in the table 2.
Comparative Examples by above-mentioned each embodiment intercepting test specimen, adds weldering test reinforcing bar on the string muscle, carry out tension test by prior art, records the mechanics data and lists in the table 2.
Table 1 test specimen parameter and anchor clamps moving state table
Table 2 this method embodiment and Comparative Examples test mechanics tables of data
| Embodiment/Comparative Examples | 1 | 2 | 3 | 4 | 5 |
| Embodiment | 8930N | 10360N | 9752N | 9120N | 9370N |
| Comparative Examples | 7420N | 8340N | 9310N | 6840N | 8073N |
Can find out by last table: sampling under the same conditions, record very instability of data and use prior art, and it is far away to depart from actual value, causes erroneous judgement.Use data stabilization that anchor clamps of the present invention and test method record, accurately, reliable, can truly reflect the shearing resistance performance of steel bar girder pad.
Claims (5)
1. steel bar girder welding mechanics performance test is used anchor clamps; It is characterized in that these anchor clamps are connected and composed by main hook (1), locating shaft (2) and slide block (3), adjusting bolt (4) and base (5); Described main hook front end is established gib head (6); Gib head is established sample open slot (7), and steel bar girder string muscle places the gib head below, and the abdomen muscle places the sample open slot; Position axle sleeve (8) is set in the rear end, and the locating shaft cunning that connects with slide block is contained in the axle sleeve of location, and main hook slides around locating shaft and rotates; The slide block cunning is contained in the rectangle chute (9) that base establishes, and is connected with adjusting bolt on being located at the rectangle chute wall, moves with main hook through slide block and rotates around locating shaft, guarantees the test specimen stretching of can hanging down; Base is divided into fixed head (10) and is connected with cupping machine.
2. steel bar girder welding mechanics performance test according to claim 1 is used anchor clamps, it is characterized in that described base top establishes the rectangle chute, and the slide block cunning is loaded in the chute; Chute wall is established the adjusting bolt hole and is cooperated with the adjusting bolt, and the adjusting bolt that has handle places regulates bolt hole; Screw is established in the fixed head bottom that base is established, and plate washer (11) is by being bolted on the fixed head.
3. steel bar girder welding mechanics performance test according to claim 1 is used anchor clamps; It is characterized in that described main hook is approximate obtuse triangle, gib head is established in the front, elongated boss; Strip projected parts is established in the boss outer; Dihedral sample open slot is established in the gib head stage casing, its angle=35 ~ 73 °, and the steel bar girder sample that is suitable for angle between abdomen muscle and the string muscle and is 35 ~ 73 ° carries out tension test; Cylindrical location axle sleeve is established in the main hook rear end, and locating shaft is loaded in it.
4. steel bar girder welding mechanics performance test according to claim 1 is used anchor clamps; It is characterized in that described slide block is a rectangular parallelepiped; Reverse " T " connected in star is established in the upper end; Screw is established in the slide block outside, and bolt passes the slide block baffle plate (12) of being wider than the chute width and is fixed on the slide block, and anti-limited slip block comes off; Step (13) and locating shaft are established in the slide block inboard, and step width had both hindered a grade slide block and come off greater than the chute width, again main hook and base was separated; Locating shaft is located on the slide block step, and diameter matches with the location sleeve diameter that main hook is established, and the locating shaft cunning is contained in the axle sleeve of location, and by locating shaft plate washer and bolt, main hook rotates around locating shaft; Slide block is constrained in the rectangle chute by slide block plate washer (14) and step, horizontally slips.
5. steel bar girder welding mechanics performance test according to claim 1 is used anchor clamps; It is characterized in that the adjusting bolt hole that described adjusting bolt and base are established cooperates; Front end is established " T " shape connector, cooperates, links together with reverse " T " connected in star that slide block is established; Handle (15) is established in the rear end, rotates and regulates bolt, drives slide block and moves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210195809.5A CN102706738B (en) | 2012-06-14 | 2012-06-14 | Clamp for mechanical property test of welding of steel-bar truss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210195809.5A CN102706738B (en) | 2012-06-14 | 2012-06-14 | Clamp for mechanical property test of welding of steel-bar truss |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102706738A true CN102706738A (en) | 2012-10-03 |
| CN102706738B CN102706738B (en) | 2014-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210195809.5A Active CN102706738B (en) | 2012-06-14 | 2012-06-14 | Clamp for mechanical property test of welding of steel-bar truss |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203453A (en) * | 2015-09-21 | 2015-12-30 | 江苏科技大学 | Micro-punching-shear testing device and method for micro-area mechanical property of welding joint |
| ES2650620A1 (en) * | 2016-07-19 | 2018-01-19 | Universidade De Vigo | Equipment and method for testing articulated reticular structures (Machine-translation by Google Translate, not legally binding) |
| CN112730045A (en) * | 2020-12-21 | 2021-04-30 | 中南大学 | Shearing clamp and application method thereof |
| CN114518286A (en) * | 2022-01-11 | 2022-05-20 | 中国人民解放军国防科技大学 | Tensile member fixing clamp for mechanical tensile test |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4380174A (en) * | 1980-08-15 | 1983-04-19 | Tanenbaum Joseph M | Apparatus for shear testing welds |
| CN201177587Y (en) * | 2007-12-28 | 2009-01-07 | 浙江昆仑建设集团股份有限公司 | Jigs for checking reinforcing steel bar-steel plate welding strength |
| CN202008445U (en) * | 2011-03-11 | 2011-10-12 | 北京邢钢焊网科技发展有限责任公司 | Clamp for testing nodes of net welded by steel reinforcing ribs |
| CN202661331U (en) * | 2012-06-14 | 2013-01-09 | 安徽马钢比亚西钢筋焊网有限公司 | Clamp for testing welding mechanical properties of reinforcing steel bar truss |
-
2012
- 2012-06-14 CN CN201210195809.5A patent/CN102706738B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4380174A (en) * | 1980-08-15 | 1983-04-19 | Tanenbaum Joseph M | Apparatus for shear testing welds |
| CN201177587Y (en) * | 2007-12-28 | 2009-01-07 | 浙江昆仑建设集团股份有限公司 | Jigs for checking reinforcing steel bar-steel plate welding strength |
| CN202008445U (en) * | 2011-03-11 | 2011-10-12 | 北京邢钢焊网科技发展有限责任公司 | Clamp for testing nodes of net welded by steel reinforcing ribs |
| CN202661331U (en) * | 2012-06-14 | 2013-01-09 | 安徽马钢比亚西钢筋焊网有限公司 | Clamp for testing welding mechanical properties of reinforcing steel bar truss |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203453A (en) * | 2015-09-21 | 2015-12-30 | 江苏科技大学 | Micro-punching-shear testing device and method for micro-area mechanical property of welding joint |
| CN105203453B (en) * | 2015-09-21 | 2018-04-24 | 江苏科技大学 | Micro- the punching test device and method of a kind of welding point Micro Zone Mechanical Properties |
| ES2650620A1 (en) * | 2016-07-19 | 2018-01-19 | Universidade De Vigo | Equipment and method for testing articulated reticular structures (Machine-translation by Google Translate, not legally binding) |
| CN112730045A (en) * | 2020-12-21 | 2021-04-30 | 中南大学 | Shearing clamp and application method thereof |
| CN114518286A (en) * | 2022-01-11 | 2022-05-20 | 中国人民解放军国防科技大学 | Tensile member fixing clamp for mechanical tensile test |
| CN114518286B (en) * | 2022-01-11 | 2023-09-22 | 中国人民解放军国防科技大学 | Tensile member mounting fixture for mechanical tensile test |
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| CN102706738B (en) | 2014-04-02 |
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