CN102944489A - Force-increasing test apparatus for tensile strength of pull rod - Google Patents
Force-increasing test apparatus for tensile strength of pull rod Download PDFInfo
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- CN102944489A CN102944489A CN2012104053757A CN201210405375A CN102944489A CN 102944489 A CN102944489 A CN 102944489A CN 2012104053757 A CN2012104053757 A CN 2012104053757A CN 201210405375 A CN201210405375 A CN 201210405375A CN 102944489 A CN102944489 A CN 102944489A
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- pull bar
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- thrust bearing
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Abstract
The invention discloses a force-increasing test apparatus for tensile strength of a pull rod. The force-increasing test apparatus comprises a pedestal and a front plate, a middle plate and a rear plate which are disposed on the pedestal successively in parallel, wherein the front plate is fixedly provided with a limited block; a thrust seat is disposed between the rear plate and the middle plate; a connecting rod mechanism is disposed among the middle plate, the rear plate and the thrust seat; the rear plate is provided with a rotation regulating mechanism and a horizontal driving mechanism used for driving the thrust seat; and a to-be-tested pull rod is provided with a stress sensing device. The force-increasing test apparatus is advantageous in that tensile strength of the whole pull rod can be directly tested by the apparatus; the pulling force loaded on the pull rod when the pull rod is broken can be calculated accurately through the stress sensing device during the test; and the apparatus is simple in operations.
Description
Technical field
The present invention relates to a kind of pull bar tensile strength proving installation, especially relate to a kind of boosting-type pull bar tensile strength proving installation.
Background technology
Pull bar is one of most important parts on the injection machine, its material that adopts mostly is 40Cr, it is very important that its tensile strength meets standard, but because the pull bar of injection machine typically has a diameter from 60mm ~ 360mm, even if the pull bar of minimum diameter 60mm wants to test the tension tester (such as pull action cylinder commonly used at present) that the words of its tensile strength also need 250T left and right sides power, substantially do not have on the tension tester market so energetically.Therefore, at present the sampling test is adopted in the tensile strength test of pull bar substantially, during test trolley being become diameter is that the sample of 20mm is done test for tensile strength, but such mode can not judge whether the screw thread place of pull bar is intact, whether whole material is qualified, thereby can't judge directly and accurately whether pull bar integral body is qualified.
Summary of the invention
Technical matters to be solved by this invention provides a kind of boosting-type pull bar tensile strength proving installation that can carry out directly, exactly the tensile strength test to pull bar integral body.
The present invention solves the problems of the technologies described above the technical scheme that adopts: a kind of boosting-type pull bar tensile strength proving installation, comprise pedestal and be set up in parallel successively header board on described pedestal, middle plate and rear plate, described header board is fixedly connected with described pedestal, described middle plate, described rear plate is slidingly matched with described base level respectively, be fixedly installed on the described header board and be useful on the limited block that the described middle plate of restriction moves forward, be provided with thrust bearing between described rear plate and the described middle plate, described middle plate, be provided with linkage assembly between described rear plate and the described thrust bearing three, tested pull bar passes described rear plate successively, described thrust bearing, described middle plate, described limited block and described header board, the leading section of tested pull bar is fixedly connected with described header board, the rearward end of tested pull bar is bolted with rear clamp nut, be fixedly installed rear plate pressing plate on the described rear plate, described rear clamp nut is arranged between described rear plate pressing plate and the described rear plate, be provided with the rotation governor motion that is rotatably assorted with described rear clamp nut on the described rear plate, be provided with the thrust bearing horizontal drive mechanism on the described rear plate, tested pull bar is connected with the stress sensing apparatus.
The quantity of described linkage assembly is two and is symmetrically distributed in the up and down both sides of described thrust bearing, described linkage assembly comprises first connecting rod group, second connecting rod group and third connecting rod group, the front end of described first connecting rod group and described middle plate are coupling, the front end of the rear end of described first connecting rod group and described second connecting rod group is coupling, the rear end of described second connecting rod group and described rear plate are coupling, one end and the described thrust bearing of described third connecting rod group are coupling, and the other end of described third connecting rod group and described second connecting rod group are coupling.
Described rotation governor motion comprises two gerotor motors that are symmetricly set on the up and down both sides of described rear clamp nut, be fixedly installed the first adjusting gear on the output shaft of described gerotor motor, be wholely set the second adjusting gear on the described rear clamp nut, described the first adjusting gear is meshed with described the second adjusting gear.
Described thrust bearing horizontal drive mechanism comprises two driving oil cylinders that are symmetricly set on the left and right sides of described rear clamp nut, and the piston rod of described driving oil cylinder passes described rear plate and is fixedly connected with described thrust bearing.
Described stress sensing apparatus comprises stress sensing instrument and the foil gauge that is attached on the tested pull bar, described stress sensing instrument is fixedly installed on the described pedestal, described foil gauge is electrically connected with described stress sensing instrument, the pulling force size that the data that show by the stress sensing instrument can calculate tested pull bar when breaking.
The bottom of described middle plate is provided with slide assemblies, and described slide assemblies and described base level are slidingly matched, so that middle plate can slidably reciprocate at pedestal under the effect of thrust bearing.
Along continuous straight runs is fixedly installed the thrust bearing guide rod on the described rear plate, and described thrust bearing is set on the described thrust bearing guide rod and with its horizontal slip and cooperates, so that the motion of thrust bearing is more reliable and more stable.
Evenly be surrounded with a plurality of counting holes on the outer wall of described rear clamp nut, the corresponding section, position of the top of described rear clamp nut and described counting hole is provided with the counting inductor, described counting inductor is electrically connected with computer controller, described computer controller is fixedly installed on the described pedestal, and being used for accurately, the rear clamp nut of control gerotor motor drive moves forward micro-distance.
The leading section of tested pull bar is bolted with front clamp nut, be fixedly installed the first erection column on the described header board, the header board pressing plate passes described the first erection column and is fixedly connected with it, the front end of tested pull bar withstands on the described header board pressing plate, tested pull bar is fixedly connected with described header board pressing plate by bolt, be fixedly installed the second erection column on the described rear plate, described rear plate pressing plate passes described the second erection column and is fixedly connected with it.
Compared with prior art, the invention has the advantages that by this device and can be directly carry out the tensile strength test to pull bar integral body, can calculate exactly pull bar suffered pulling force when breaking by the stress sensing apparatus during test, integrated operation is easy; This device has adopted the linkage assembly that amplifies the oil cylinder pulling force, the five-point type linkage assembly can reduce the pulling force of oil cylinder significantly, through experimental calculation and practical application, when test diameter is the pull bar of 60mm, the pulling force of oil cylinder only needs about 10T, only be about 1/25 times of traditional tension tester, can greatly reduce the size of oil cylinder, reduced cost; Thereby the bulk strength by the test pull bar can judge whether material, Technology for Heating Processing and the processing technology of pull bar be reasonable.
Description of drawings
Fig. 1 is partial structurtes schematic diagram of the present invention ();
Fig. 2 is partial structurtes schematic diagram of the present invention (two);
Fig. 3 is the integrally-built cut-open view of the present invention;
Fig. 4 is the integrally-built side view of the present invention;
Fig. 5 is the cut-open view at A-A place among Fig. 4;
Fig. 6 is the cut-open view at B-B place among Fig. 4;
Fig. 7 is the partial enlarged drawing at C place among Fig. 3;
Fig. 8 is the partial enlarged drawing at D place among Fig. 3;
Fig. 9 is the partial enlarged drawing at E place among Fig. 3.
Embodiment
Embodiment is described in further detail the present invention below in conjunction with accompanying drawing.
As shown in the figure, a kind of boosting-type pull bar tensile strength proving installation, comprise pedestal 1 and be set up in parallel successively header board 2 on pedestal 1, middle plate 3 and rear plate 4, header board 2 is fixedly connected with pedestal 1, the bottom of middle plate 3 is provided with slide assemblies 21, slide assemblies 21 cooperates with pedestal 1 horizontal slip, rear plate 4 cooperates with pedestal 1 horizontal slip, be fixedly installed on the header board 2 and be useful on the limited block 5 that plate 3 moves forward in the restriction, be provided with thrust bearing 6 between rear plate 4 and the middle plate 3, along continuous straight runs is fixedly installed thrust bearing guide rod 41 on the rear plate 4, thrust bearing 6 is set on the thrust bearing guide rod 41 and with its horizontal slip and cooperates, middle plate 3, be provided with linkage assembly between rear plate 4 and thrust bearing 6 threes, the quantity of linkage assembly is two and is symmetrically distributed in the up and down both sides of thrust bearing 6, linkage assembly comprises first connecting rod group 12, second connecting rod group 13 and third connecting rod group 14, the front end of first connecting rod group 12 and middle plate 3 are coupling, the front end of the rear end of first connecting rod group 12 and second connecting rod group 13 is coupling, the rear end of second connecting rod group 13 and rear plate 4 are coupling, one end and the thrust bearing 6 of third connecting rod group 14 are coupling, the other end of third connecting rod group 14 and second connecting rod group 13 are coupling, tested pull bar 7 passes rear plate 4 successively, thrust bearing 6, middle plate 3, limited block 5 and header board 2, the leading section 71 of tested pull bar 7 is bolted with front clamp nut 8, be fixedly installed the first erection column 24 on the header board 2, header board pressing plate 9 passes the first erection column 24 and is fixedly connected with it, the front end of tested pull bar 7 withstands on the header board pressing plate 9, tested pull bar 7 is fixedly connected with described header board pressing plate 9 by bolt 25, the rearward end 72 of tested pull bar 7 is bolted with rear clamp nut 10, be fixedly installed the second erection column 26 on the rear plate 4, rear plate pressing plate 11 passes the second erection column 26 and is fixedly connected with it, rear clamp nut 10 is arranged between rear plate pressing plate 11 and the rear plate 4, evenly be surrounded with a plurality of counting holes 21 on the outer wall of rear clamp nut 10, the corresponding section, position of the top of rear clamp nut 10 and counting hole 21 is provided with counting inductor 22, counting inductor 22 is electrically connected with computer controller 23, computer controller 23 is fixedly installed on the pedestal 1, tested pull bar 7 passes rear plate pressing plate 11, be provided with the rotation governor motion that is rotatably assorted with rear clamp nut 10 on the rear plate 4, rotate governor motion and comprise two gerotor motors 15 that are symmetricly set on the up and down both sides of rear clamp nut 10, be fixedly installed the first adjusting gear 16 on the output shaft 151 of gerotor motor 15, be wholely set the second adjusting gear 17 on the rear clamp nut 10, the first adjusting gear 16 is meshed with the second adjusting gear 17, be provided with on the rear plate 4 for the horizontal drive mechanism that drives thrust bearing 6, horizontal drive mechanism comprises two driving oil cylinders 18 that are symmetricly set on the left and right sides of rear clamp nut 10, the piston rod 181 that drives oil cylinder 18 passes rear plate 4 and is fixedly connected with thrust bearing 6, be provided with the stress sensing apparatus on the tested pull bar 7, the stress sensing apparatus comprises foil gauge 19 and the stress sensing instrument 20 that is attached on the tested pull bar 7, stress sensing instrument 20 is fixedly installed on the pedestal 1, and foil gauge 19 is electrically connected with stress sensing instrument 20.
Slide assemblies described in above-described embodiment adopts horizontal slide commonly used in the present mechanical field, such as slide block.
Principle of work of the present invention is as follows: first tested pull bar is inserted in this device, tighten front clamp nut, install the first erection column, and the header board pressing plate tightened, install rear clamp nut, install the second erection column, and tighten rear plate pressing plate, post foil gauge at tested pull bar, by the Hydraulic Station fuel feeding, clamp nut moves forward after making two gerotor motors rotate drive, thereby plate after driving, middle plate moves forward together, till moving to plate and withstanding limited block and can't move forward again, the Hydraulic Station fuel feeding is given and is driven oil cylinder, drive oil cylinder and drive the thrust bearing certain distance of drawing back, thereby the plate certain distance of drawing back in driving, thereby clamp nut moves forward after utilizing computer controller trace control gerotor motor to rotate drive, till moving to plate and withstanding limited block and can't move forward again, Hydraulic Station stops the gerotor motor fuel feeding, the Hydraulic Station fuel feeding is given and is driven oil cylinder, driving oil cylinder drive thrust bearing moves forward, because middle plate withstands limited block and can't move forward again, thereby plate moves backward after driving, clamp nut after rear plate promotes, rear clamp nut drives tested pull bar and stretches backward, can demonstrate simultaneously the suffered pulling force size of tested pull bar on the stress sensing instrument, if this moment, pull bar was not broken, then drive oil cylinder and drive the thrust bearing certain distance of drawing back again, the plate certain distance of drawing back simultaneously, clamp nut moved forward after thereby recycling computer controller trace control gerotor motor rotated and drives, till moving to plate and withstanding limited block and can't move forward again, Hydraulic Station stops the gerotor motor fuel feeding, the Hydraulic Station fuel feeding is given and is driven oil cylinder, driving oil cylinder drive thrust bearing moves forward, because middle plate withstands limited block and can't move forward again, thereby plate moves backward after driving, tested pull bar is stretched again, again read the pulling force data on the stress sensing instrument, if this moment, tested pull bar was not still broken, then repeat above action, until till tested pull bar broken, read the pulling force data on the stress sensing instrument when breaking, calculate the size of tension according to pulling force data, judge whether overall acceptability of tested pull bar.
Claims (9)
1. boosting-type pull bar tensile strength proving installation, it is characterized in that: comprise pedestal and be set up in parallel successively header board on described pedestal, middle plate and rear plate, described header board is fixedly connected with described pedestal, described middle plate, described rear plate is slidingly matched with described base level respectively, be fixedly installed on the described header board and be useful on the limited block that the described middle plate of restriction moves forward, be provided with thrust bearing between described rear plate and the described middle plate, described middle plate, be provided with linkage assembly between described rear plate and the described thrust bearing three, tested pull bar passes described rear plate successively, described thrust bearing, described middle plate, described limited block and described header board, the leading section of tested pull bar is fixedly connected with described header board, the rearward end of tested pull bar is bolted with rear clamp nut, be fixedly installed rear plate pressing plate on the described rear plate, described rear clamp nut is arranged between described rear plate pressing plate and the described rear plate, be provided with the rotation governor motion that is rotatably assorted with described rear clamp nut on the described rear plate, be provided with the thrust bearing horizontal drive mechanism on the described rear plate, tested pull bar is connected with the stress sensing apparatus.
2. a kind of boosting-type pull bar tensile strength proving installation according to claim 1, it is characterized in that: the quantity of described linkage assembly is two and is symmetrically distributed in the up and down both sides of described thrust bearing, described linkage assembly comprises the first connecting rod group, second connecting rod group and third connecting rod group, the front end of described first connecting rod group and described middle plate are coupling, the front end of the rear end of described first connecting rod group and described second connecting rod group is coupling, the rear end of described second connecting rod group and described rear plate are coupling, one end and the described thrust bearing of described third connecting rod group are coupling, and the other end of described third connecting rod group and described second connecting rod group are coupling.
3. a kind of boosting-type pull bar tensile strength proving installation according to claim 1, it is characterized in that: described rotation governor motion comprises two gerotor motors that are symmetricly set on the up and down both sides of described rear clamp nut, be fixedly installed the first adjusting gear on the output shaft of described gerotor motor, be wholely set the second adjusting gear on the described rear clamp nut, described the first adjusting gear is meshed with described the second adjusting gear.
4. a kind of boosting-type pull bar tensile strength proving installation according to claim 1, it is characterized in that: described thrust bearing horizontal drive mechanism comprises two driving oil cylinders that are symmetricly set on the left and right sides of described rear clamp nut, and the piston rod of described driving oil cylinder passes described rear plate and is fixedly connected with described thrust bearing.
5. a kind of boosting-type pull bar tensile strength proving installation according to claim 1, it is characterized in that: described stress sensing apparatus comprises stress sensing instrument and the foil gauge that is attached on the tested pull bar, described stress sensing instrument is fixedly installed on the described pedestal, and described foil gauge is electrically connected with described stress sensing instrument.
6. a kind of boosting-type pull bar tensile strength proving installation according to claim 1, it is characterized in that: the bottom of described middle plate is provided with slide assemblies, and described slide assemblies and described base level are slidingly matched.
7. a kind of boosting-type pull bar tensile strength proving installation according to claim 1, it is characterized in that: along continuous straight runs is fixedly installed the thrust bearing guide rod on the described rear plate, and described thrust bearing is set on the described thrust bearing guide rod and with its horizontal slip and cooperates.
8. a kind of boosting-type pull bar tensile strength proving installation according to claim 1, it is characterized in that: evenly be surrounded with a plurality of counting holes on the outer wall of described rear clamp nut, the corresponding section, position of the top of described rear clamp nut and described counting hole is provided with the counting inductor, described counting inductor is electrically connected with computer controller, and described computer controller is fixedly installed on the described pedestal.
9. a kind of boosting-type pull bar tensile strength proving installation according to claim 1, it is characterized in that: the leading section of tested pull bar is bolted with front clamp nut, be fixedly installed the first erection column on the described header board, the header board pressing plate passes described the first erection column and is fixedly connected with it, the front end of tested pull bar withstands on the described header board pressing plate, tested pull bar is fixedly connected with described header board pressing plate by bolt, be fixedly installed the second erection column on the described rear plate, described rear plate pressing plate passes described the second erection column and is fixedly connected with it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210405375.7A CN102944489B (en) | 2012-10-22 | 2012-10-22 | Force-increasing test apparatus for tensile strength of pull rod |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210405375.7A CN102944489B (en) | 2012-10-22 | 2012-10-22 | Force-increasing test apparatus for tensile strength of pull rod |
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| Publication Number | Publication Date |
|---|---|
| CN102944489A true CN102944489A (en) | 2013-02-27 |
| CN102944489B CN102944489B (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210405375.7A Active CN102944489B (en) | 2012-10-22 | 2012-10-22 | Force-increasing test apparatus for tensile strength of pull rod |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108181179A (en) * | 2017-12-30 | 2018-06-19 | 王银露 | A kind of tensile strength test device |
| CN112729763A (en) * | 2021-04-06 | 2021-04-30 | 中国空气动力研究与发展中心高速空气动力研究所 | Symmetric pasting quantitative pressurizing device for wind tunnel balance |
| CN115112484A (en) * | 2022-08-30 | 2022-09-27 | 徐州东屹建材科技有限公司 | Bridge jib tensile strength testing arrangement |
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| US20030101793A1 (en) * | 2001-11-30 | 2003-06-05 | Evans Paul R. | Machine for testing wear, wear-preventative and friction properties of lubricants and other materials |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108181179A (en) * | 2017-12-30 | 2018-06-19 | 王银露 | A kind of tensile strength test device |
| CN108181179B (en) * | 2017-12-30 | 2018-12-14 | 徐州卧牛山新型防水材料有限公司 | A kind of tensile strength test device |
| CN112729763A (en) * | 2021-04-06 | 2021-04-30 | 中国空气动力研究与发展中心高速空气动力研究所 | Symmetric pasting quantitative pressurizing device for wind tunnel balance |
| CN112729763B (en) * | 2021-04-06 | 2021-06-22 | 中国空气动力研究与发展中心高速空气动力研究所 | Symmetric pasting quantitative pressurizing device for wind tunnel balance |
| CN115112484A (en) * | 2022-08-30 | 2022-09-27 | 徐州东屹建材科技有限公司 | Bridge jib tensile strength testing arrangement |
| CN115112484B (en) * | 2022-08-30 | 2022-11-11 | 徐州东屹建材科技有限公司 | Bridge jib tensile strength testing arrangement |
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| CN102944489B (en) | 2015-04-22 |
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