CN109848329A - Cold bending experiment machine for reinforced bar and its test method - Google Patents
Cold bending experiment machine for reinforced bar and its test method Download PDFInfo
- Publication number
- CN109848329A CN109848329A CN201811585035.0A CN201811585035A CN109848329A CN 109848329 A CN109848329 A CN 109848329A CN 201811585035 A CN201811585035 A CN 201811585035A CN 109848329 A CN109848329 A CN 109848329A
- Authority
- CN
- China
- Prior art keywords
- block
- fixed
- reinforcing bar
- workbench
- cold bending
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of cold bending experiment machine for reinforced bar, belong to reinforcing steel bar cold bent test apparatus field, it includes pedestal, workbench is installed at the top of pedestal, the side of workbench is installed with force application mechanism, and the positioning mechanism for fixed steel bars and the position-limit mechanism for the bending angle accurate limit to reinforcing bar are provided on the workbench；The invention also discloses a kind of test methods of cold bending experiment machine for reinforced bar: reinforcing bar is fixed on the worktable by a1.；A2. the position of the good block of the angular adjustment measured as needed；A3. it presses reinforcing bar to its clod wash；A4. the reinforcing bar after clod wash is removed from workbench；A5. test result is evaluated, the present invention has the bending angle that can accurately control reinforcing bar cold bending, so as to cause the more accurate effect of test result.
Description
Technical field
The present invention relates to reinforcing steel bar cold bent test apparatus fields, more particularly, to a kind of cold bending experiment machine for reinforced bar and its test side
Method.
Background technique
Reinforcing steel bar cold bent test is the characteristic of reinforcing bar ess-strain under external force, with load-deformation curve when stretching
It indicates.There are the indexs such as yield point, ultimate tensile strength elongation, cold-bending property.The assessment method of test result can be, and see folding
Test specimen qualification is then evaluated in flawless, crack or brisement when being bent to a certain degree；The length specified in micro-crack, crackle, crack
As long as having one to reach certain prescribed limit i.e. with width should be evaluated by this grade.
The prior art can refer to the Chinese invention patent that Authorization Notice No. is CN100557411, and it discloses a kind of duplexs
Work position steel bar cold bending test machine, including force application apparatus and bearing；The force application apparatus includes a main oil cylinder piston bar and peace
Curved core mounted in main oil cylinder piston bar top, the bearing include adjustable supporting device and interference loading system；Institute
The adjustable supporting device stated includes that lead screw and the branch roller for being mounted on lead screw both ends, described lead screw one end are also connected with handle,
Swinging handle drives two rollers are synchronous to retreat to drive lead screw to rotate；The interference loading system includes direction finding load oil
Cylinder, 5 ° of templates and wear-resistant pressing plate.
But have the disadvantage that traditional approach passes through staff when curved core downward pressing reinforcing in foregoing invention
Naked eyes judge to be pressed onto certain camber, the bending angle of reinforcing bar cold bending cannot be accurately controlled, not so as to cause test result
Accurately.
Summary of the invention
The object of the present invention is to provide a kind of cold bending experiment machine for reinforced bar, the positioning for fixed steel bars is provided on workbench
Mechanism and position-limit mechanism for the bending angle accurate limit to reinforcing bar, can accurately control the bending angle of reinforcing bar cold bending
Degree is more accurate so as to cause test result.
Above-mentioned technical purpose of the invention has the technical scheme that
A kind of cold bending experiment machine for reinforced bar, including pedestal are installed with workbench at the top of pedestal, and the side of workbench is installed with force
Mechanism is provided with for the positioning mechanism of fixed steel bars and for the bending angle accurate limit to reinforcing bar on the workbench
Position-limit mechanism；The positioning mechanism include can Relative sliding or opposite sliding in the fixed block one of bench-top and solid
Determine block two, fixed block one and the opposite side of fixed block two are connected with the positioning component for fixed steel bars both ends；The limit
Mechanism includes being fixedly arranged on two pieces of limited blocks of bench-top in parallel and sliding the block being connected on two pieces of limited blocks, is limited
It is uniformly provided with multiple limiting slots on block, the grafting block that can be connected in limiting slot is hinged on block.
The distance between fixed block one and fixed block two are adjusted according to the length of test reinforcing bar by using above scheme,
The both ends of reinforcing bar are fixed on positioning component again, the position of block is adjusted according to the angle of required bar bending, exert a force machine
Structure presses to reinforcing bar, until bar bending is to abutting with block, the angle of bar bending can be accurately controlled, to make test knot
Fruit is more accurate.
The present invention is further arranged to: the positioning component includes the fixed ring being articulated on fixed block one, in fixed ring
Three slippage slots are uniformly provided with along its circumferential direction, and sliding is connected with the locating piece for fixed steel bars in slippage slot, on locating piece
It is threaded with for the fixing bolt that locating piece and positioning ring is fixed.
By using above scheme, when reinforcing bar is fixed in fixed ring, the end of reinforcing bar is set to pass through fixed ring, then slide
Locating piece is abutted to locating piece with the side wall of reinforcing bar, then is pushed against locating piece and fixed ring by fixing bolt, and then can be by steel
Muscle is fixed with fixed ring.
The present invention is further arranged to: the two sides of the block offer holding tank, and grafting block is articulated with the bottom of holding tank
Portion.
By using above scheme, grafting block is can turn in holding tank, when needing to slide onto block into different positions,
Grafting block turns in holding tank, and making grafting block not influences the sliding of block.
The present invention is further arranged to: the force application mechanism includes the oil cylinder for being fixedly arranged on workbench side, the piston of oil cylinder
Boom end is removably connected with curved core.
By using above scheme, the piston rod of oil cylinder extends, and the curved core of the piston rod end of oil cylinder can apply reinforcing bar
It presses and makes bar bending, when bar bending with block to after abutting, control the piston rod stop motion of oil cylinder, curved core and oil cylinder
To be detachably connected between piston rod, convenient for being replaced to curved core.
The present invention is further arranged to: one end of the curved core offers the circle that can be sheathed on the piston rod end of oil cylinder
Hole, the end of the piston rod of oil cylinder offer through-hole two, and through-hole one is offered on curved core, is connected with spiral shell on through-hole one and through-hole two
Bolt, bolt passes through through-hole one and two rear thread of through-hole is connected with nut.
By using above scheme, when replacing curved core, it is plugged in the piston rod of oil cylinder in the circular hole of curved core, in circular hole,
It is overlapped through-hole one and through-hole two, the piston rod of curved core and oil cylinder is being fixed by screw bolt and nut, is passing through screw bolt and nut
It is fixed, convenient for being replaced to curved core.
The present invention is further arranged to: being provided with shield at the top of the workbench, slide calliper rule are installed on shield, block
The zero graduation line of ruler is located at the center of shield side, is installed with the indicator extended to above slide calliper rule on fixed block one.
It, can when reading is equal to the half of reinforcing bar length according to the data that indicator indicates by using above scheme
On a horizontal plane, shield can prevent the workbench that flies out during reinforcing bar cold bending for the center for making reinforcing bar and curved core, avoid
Injury is brought to staff.
It is a further object to provide a kind of test methods of cold bending experiment machine for reinforced bar, include the following steps:
A1. reinforcing bar is fixed on the worktable；
A2. the position of the good block of the angular adjustment measured as needed；
A3. it presses reinforcing bar to its clod wash；
A4. the reinforcing bar after clod wash is removed from workbench；
A5. test result is evaluated.
By using above scheme, first reinforcing bar is fixed on the worktable, the camber of the reinforcing bar of clod wash as needed is adjusted
The distance for having saved block presses to reinforcing bar and is extremely abutted to its bending with block, then reinforcing bar is removed from workbench, finally to steel
Muscle carries out analyzing evaluation, can accurately control the bending angle of reinforcing bar cold bending, more accurate so as to cause test result.
The present invention is further arranged to: in a1, fixed block one and fixed block two being driven to slide, is made fixed block one and fix
The distance between block two and the length of reinforcing bar adapt to；The both ends of reinforcing bar are fixed in fixed ring again, slides and determines in fixed ring
The end of position block to locating piece is abutted with reinforcing bar, then is fixed locating piece and fixed ring by fixing bolt.
By using above scheme, the distance between fixed block one and fixed block two are adjusted to and fitted with the length of reinforcing bar
It answers, reinforcing bar is fixed in the fixed ring of fixed block one and fixed block two, and the middle part that can make reinforcing bar and curved core are in a horizontal plane
On, the test result after guaranteeing clod wash is more accurate.
The present invention is further arranged to: in a2, as needed by the bending angle of bending reinforcement, sliding block to block
On grafting block be plugged in the different limiting slots on limited block.
By using above scheme, block is slid onto different positions, grafting block is plugged in limiting slot can be to gear
Block is fixed, and block can limit the bending angle of bending, guarantees that reinforcing bar can be bent to required angle, into
And test result can be made more acurrate.
In conclusion the invention has the following advantages:
1. accurate by the bending angle being provided on the table for the positioning mechanism of fixed steel bars and for reinforcing bar
The position-limit mechanism of limit can accurately control the bending angle of reinforcing bar cold bending, more accurate so as to cause test result；
2. by making the thickness of reinforcing bar can be had more, to replace difference between curved core and the piston rod of oil cylinder to be detachably connected
The curved core of length, to keep test result more acurrate；
3. by being provided with shield at the top of workbench, shield can prevent extraneous object from falling on workbench,
When smashing the piston rod of oil cylinder, while can prevent curved core from pressing to reinforcing bar, reinforcing bar bullet between fixed block one and fixed block two
Out.
Detailed description of the invention
Fig. 1 is the axonometric drawing of embodiment；
Fig. 2 is the structural schematic diagram that shield is removed in embodiment；
Fig. 3 is the connection relationship to highlight the piston rod of curved core and oil cylinder and the explosive view made；
Fig. 4 is the cross-sectional view of workbench and positioning mechanism；
Fig. 5 is the explosive view made to highlight positioning component；
Fig. 6 is the portion the A enlarged drawing of Fig. 1；
Fig. 7 is the structural schematic diagram of limit assembly；
Fig. 8 is the cross-sectional view of position-limit mechanism.
In figure, 1, pedestal；2, workbench；21, T-type sliding slot；22, shield；221, fixed frame；2211, slide calliper rule；2212,
Indicator；222, adjustable shelf；223, protective net；3, force application mechanism；31, oil cylinder；32, curved core；321, circular hole；322, through-hole one；
323, fillet；33, through-hole two；4, positioning mechanism；41, fixed block one；411, T-type sliding block one；412, gap slot；42, fixed block
Two；421, T-type sliding block two；43, to silk；431, hand-operated wheel；44, positioning component；441, fixed ring；442, slippage slot；443, fixed
Position block；444, fixing bolt；5, position-limit mechanism；51, limited block；511, limiting slot；52, block；521, holding tank；53, grafting
Block.
Specific embodiment
A kind of cold bending experiment machine for reinforced bar, referring to Fig. 1, including pedestal 1, the top of pedestal 1 is installed with workbench 2 and force machine
Structure 3 is installed with the positioning mechanism 4 for reinforcing bar to be fixed on workbench 2.Reinforcing bar is fixed on positioning mechanism 4, is exerted a force
Mechanism 3 can press to reinforcing bar, to reinforcing bar cold bending.
Referring to figs. 2 and 3, force application mechanism 3 includes the oil cylinder 31 for being fixedly arranged on 1 top of pedestal, the piston rod direction of oil cylinder 31
Positioning mechanism 4 is arranged, and the end of the piston rod of oil cylinder 31 is removably connected with curved core 32.It opens one end of curved core 32 towards piston rod
Equipped with the circular hole 321 for piston rod grafting, curved core 32 and piston rod open up that there are two one 322 Hes of through-hole passed through for bolt respectively
Curved core 32 is plugged on piston rod by through-hole 2 33, connects screw bolt passes by through-hole 1 and 2 33 rear thread of through-hole
It is connected to nut, the piston rod of curved core 32 and oil cylinder 31 can be fixed, one end of curved piston rod of the core 32 far from oil cylinder 31 opens up
There is fillet 323.The curved core 32 of different-diameter can be selected, according to the thickness of reinforcing bar convenient for making bar bending to defined bending angle
Degree keeps the result of measurement more acurrate.
Referring to fig. 4 and Fig. 5, positioning mechanism 4 include that sliding is connected to 2 top fixed block 1 of workbench and fixed block two
42, the bottom of fixed block 1 and fixed block 2 42 is installed with T-type sliding block 1 and T-type sliding block 2 421, the top of workbench 2
Portion offers the T-type sliding slot 21 for T-type sliding block 1 and the sliding of T-type sliding block 2 421, T-type sliding block 1 and T-type sliding block two
It is threaded on 421 to silk 43, workbench 2 is extended to one end of silk 43 and is installed with a hand-operated wheel 431, rotated hand
Wheel 431, can adjust the distance between fixed block 1 and fixed block 2 42 according to the length of reinforcing bar；Fixed block 1 and solid
Determine the opposite side of block 2 42 and be provided with positioning component 44 for fixed steel bars both ends, positioning component 44 includes rotation connection
In the fixed ring 441 on fixed block 1, fixed ring 441 is uniformly provided with three centers of circle towards fixed ring 441 along its circumferential direction
Slippage slot 442, sliding is connected with the locating piece 443 that can be slid onto fixed ring 441 in slippage slot 442, on locating piece 443
It is threadedly coupled the fixing bolt 444 that locating piece 443 and slippage slot 442 is fixed, so that reinforcing bar is passed through fixed ring 441, then slide and determine
Position block 443 to the end of locating piece 443 and reinforcing bar pushes against, and finally tightens fixing bolt 444, can be by reinforcing bar and fixed ring 441
It is fixed；Fixed block 1 and fixed block 2 42 offer the gap slot of the end grafting for reinforcing bar close to the position of fixed ring 441
412。
Referring to Fig. 1 and Fig. 6, the top of workbench 2 is installed with a shield 22, and shield 22 includes being fixedly connected on work
Make the fixed frame 221 on platform 2 and be rotationally connected with the adjustable shelf 222 of 221 side of fixed frame, fixed frame 221 is located at fixed block
1 and fixed block 2 42 top, adjustable shelf 222 is located above the piston rod of oil cylinder 31, is installed with protection on adjustable shelf 222
The object that net 223, protective net 223 and adjustable shelf 222 can prevent the external world from falling smashes the piston rod of oil cylinder 31, fixed frame 221
It can prevent reinforcing bar from popping up outward during bending, hurt staff etc..Fixed frame 221 is far from adjustable shelf 222
One lateral roof is installed with a slide calliper rule 2211, and the zero graduation of slide calliper rule 2211 is located at the center of fixed link side, fixed block 2 42
Top be installed with the indicator 2212 for extending to the top of slide calliper rule 2211, measured reinforcing bar will be surveyed in advance and be fixed on fixed ring
On 441, the half of reinforcing bar length can be read from indicator 2212, i.e., the middle part of proof reinforcing bar and curved core 32 are in a horizontal plane
On, guarantee that measurement result is more accurate.
Referring to figs. 7 and 8, the top of workbench 2 is provided with one for accurately defining the position restrainer of bar bending angle
Structure 5.Position-limit mechanism 5 includes two pieces of limited blocks 51 being parallel to each other being fixedly arranged between fixed block 1 and fixed block 2 42, limit
Position block 51 is arranged in parallel with fixed block 1, and multiple limiting slots 511, two limited blocks 51 are symmetrically offered on two pieces of limited blocks 51
Between sliding be connected with a block 52, the two sides of block 52, which are symmetrically hinged with, can be plugged in limiting slot 511 for fixing
Grafting block 53 on block 52, when the grafting block 53 on block 52 is plugged in different limiting slots 511, curved core 32 bends steel
Muscle to reinforcing bar is connected on block 52, can accurately control the bending angle of reinforcing bar, and then the data of measurement can be made more quasi-
Really.Holding tank 521 is symmetrically offered on block 52, grafting block 53 is articulated with the bottom of holding tank 521, will when sliding block 52
Grafting block 53 turns in the holding tank 521 of block 52, and making grafting block 53 not influences the sliding of block 52.
A kind of test method of cold bending experiment machine for reinforced bar, includes the following steps:
Step 1: reinforcing bar is fixed on workbench 2:
1. measuring the length of reinforcing bar, the distance between fixed block 1 and fixed block 2 42 are adjusted according to the length of reinforcing bar, are turned
Rolled round of starting 431 makes the distance between fixed block 1 and fixed block 2 42 can adapt to the length of reinforcing bar；
2. reinforcing bar is fixed in fixed ring 441, extend to the both ends of reinforcing bar in fixed ring 441, sliding locating piece 443 is to calmly
The end of position block 443 and the lateral wall of reinforcing bar push against, and then tighten fixing bolt 444 and abut to its end with fixed ring 441, i.e.,
Reinforcing bar can be fixed in fixed ring 441；
3. reading the reading on slide calliper rule 2211, read by indicator 2212, see whether reading is equal to the half of reinforcing bar length, protected
The middle part for demonstrate,proving reinforcing bar and curved core 32 are on a horizontal plane；
4. the thickness of reinforcing bar as needed selects the curved core 32 of appropriate diameter, and curved core 32 is installed on to the piston rod of oil cylinder 31
On.
Step 2: the data measured as needed regulate the position of block 52:
Slide block 52 between two limited blocks 51, the differently curved angle of the reinforcing bar measured as needed slides block
52 are plugged in the grafting block 53 on block 52 in limiting slot 511.
Step 3: it presses reinforcing bar to its clod wash:
1. controlling the piston rod elongation of oil cylinder 31, make pressuring direction of the curved core 32 to reinforcing bar to block 52, when bar bending can
Fixed ring 441 is driven to rotate；
2. making the piston rod of oil cylinder 31 stop movement when curved core 32 pushes bar bending to abut to reinforcing bar with block 52.
Step 4: the reinforcing bar after clod wash is removed from workbench 2:
1. the piston rod for controlling oil cylinder 31 is withdrawn, drive curved core 32 mobile to the direction far from reinforcing bar and to curved core 32 far from steel
Muscle；
2. reinforcing bar is removed from workbench 2, first unscrew fixing bolt 444, then slide locating piece 443 and be detached to it with reinforcing bar,
Reinforcing bar can be deviate from from fixed ring 441.
Step 5: test result is evaluated:
It checks on reinforcing bar whether there is crackle, then the crackle on reinforcing bar is compared evaluation with micro-crack, crackle, crack, in conjunction with
The length and width of reinforcing bar is calculated and is compared, and judges that reinforcing bar is micro-crack, crackle or crack.
The embodiment of present embodiment is presently preferred embodiments of the present invention, not limits protection of the invention according to this
Range, therefore: the equivalence changes that all structures under this invention, shape, principle are done, should all be covered by protection scope of the present invention it
It is interior.
Claims (9)
1. a kind of cold bending experiment machine for reinforced bar, including pedestal (1), it is installed with workbench (2) at the top of pedestal (1), workbench (2)
Side is installed with force application mechanism (3), it is characterised in that:
The bending angle being provided on the workbench (2) for the positioning mechanism (4) of fixed steel bars and for reinforcing bar is quasi-
The position-limit mechanism (5) of fidelity position；
The positioning mechanism (4) includes being capable of the fixed block one (41) of Relative sliding or opposite sliding at the top of workbench (2)
With fixed block two (42), fixed block one (41) and the opposite side of fixed block two (42) are connected with and determine for fixed steel bars both ends
Hyte part (44)；
The position-limit mechanism (5) includes that parallel two pieces of limited blocks (51) being fixedly arranged at the top of workbench (2) and sliding are connected to
Block (52) on two pieces of limited blocks (51) is uniformly provided with multiple limiting slots (511) on limited block (51), and block is cut with scissors on (52)
It is connected to the grafting block (53) that can be connected in limiting slot (511).
2. cold bending experiment machine for reinforced bar according to claim 1, it is characterised in that: the positioning component (44) includes being articulated with
Fixed ring (441) on fixed block one (41) is uniformly provided with three slippage slots (442) along its circumferential direction in fixed ring (441), sliding
It moves sliding in slot (442) and is connected with locating piece (443) for fixed steel bars, be threaded on locating piece (443) for will
The fixing bolt (444) that locating piece (443) and positioning ring are fixed.
3. cold bending experiment machine for reinforced bar according to claim 1, it is characterised in that: the two sides of the block (52) offer appearance
It receives slot (521), grafting block (53) is articulated with the bottom of holding tank (521).
4. cold bending experiment machine for reinforced bar according to claim 1, it is characterised in that: the force application mechanism (3) includes being fixedly arranged on
The oil cylinder (31) of workbench (2) side, the piston rod end of oil cylinder (31) are removably connected with curved core (32).
5. cold bending experiment machine for reinforced bar according to claim 4, it is characterised in that: one end of the curved core (32) offers energy
It is enough sheathed on the circular hole (321) of the piston rod end of oil cylinder (31), the end of the piston rod of oil cylinder (31) offers through-hole two
(33), through-hole one (322) is offered on curved core (32), is connected with bolt on through-hole one (322) and through-hole two (33), bolt passes through
Through-hole one (322) and through-hole two (33) rear thread are connected with nut.
6. cold bending experiment machine for reinforced bar according to claim 1, it is characterised in that: be provided at the top of the workbench (2)
Shield (22) is installed with slide calliper rule (2211) on shield (22), and the zero graduation line of slide calliper rule (2211) is located at shield (22) side
The center on side is installed with the indicator (2212) extended to above slide calliper rule (2211) on fixed block one (41).
7. a kind of test method of cold bending experiment machine for reinforced bar, it is characterised in that: using any one described in claim 1~6
Bending reinforcement testing machine is tested, and is included the following steps:
A1. reinforcing bar is fixed on workbench (2)；
A2. the position of the good block (52) of the angular adjustment measured as needed；
A3. it presses reinforcing bar to its clod wash；
A4. the reinforcing bar after clod wash is removed from workbench (2)；
A5. test result is evaluated.
8. the test method of cold bending experiment machine for reinforced bar according to claim 7, it is characterised in that: in a1, driving is fixed
Block one (41) and fixed block two (42) sliding, make the length of the distance between fixed block one (41) and fixed block two (42) with reinforcing bar
It adapts to；The both ends of reinforcing bar are fixed on fixed ring (441) again, the locating piece (443) in sliding fixed ring (441) to locating piece
(443) end is abutted with reinforcing bar, then by fixing bolt (444) that locating piece (443) and fixed ring (441) are fixed.
9. the test method of cold bending experiment machine for reinforced bar according to claim 7, it is characterised in that: in a2, as needed
By the bending angle of bending reinforcement, the grafting block (53) slid on block (52) to block (52) is plugged on limited block (51)
In different limiting slots (511).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811585035.0A CN109848329B (en) | 2018-12-24 | 2018-12-24 | Steel bar cold bending tester and testing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811585035.0A CN109848329B (en) | 2018-12-24 | 2018-12-24 | Steel bar cold bending tester and testing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109848329A true CN109848329A (en) | 2019-06-07 |
| CN109848329B CN109848329B (en) | 2021-08-24 |
Family
ID=66892122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811585035.0A Active CN109848329B (en) | 2018-12-24 | 2018-12-24 | Steel bar cold bending tester and testing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109848329B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110508714A (en) * | 2019-08-09 | 2019-11-29 | 李志洋 | A kind of industrial steel-bar bender |
| CN110695246A (en) * | 2019-10-18 | 2020-01-17 | 石家庄建工集团有限公司 | Hydraulic construction steel bar bending equipment |
| US11846613B2 (en) | 2020-12-31 | 2023-12-19 | Bayou Holdco, Inc. | Strain testing rig and method of evaluating strain characteristics of specimen |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58168940A (en) * | 1982-03-30 | 1983-10-05 | Shimadzu Corp | Testing method of bending |
| DE3247200A1 (en) * | 1982-12-21 | 1984-07-05 | Emil Wolff, Maschinenfabrik Und Eisengiesserei Gmbh, 4300 Essen | Process and bending press for the bending of a straight pipe to form a pipe bend with connected straight legs |
| JP2015123470A (en) * | 2013-12-26 | 2015-07-06 | 新日鐵住金株式会社 | Bending processing device and bending processing method |
| CN107377703A (en) * | 2017-07-13 | 2017-11-24 | 安徽盛美金属科技有限公司 | A kind of pneumatic bending machine |
| CN107442615A (en) * | 2017-07-17 | 2017-12-08 | 河南平高电气股份有限公司 | A kind of adjustable bend pipe mould |
| CN108941284A (en) * | 2018-07-24 | 2018-12-07 | 南京中高知识产权股份有限公司 | A kind of SMART METALS pipe fitting bending machine |
-
2018
- 2018-12-24 CN CN201811585035.0A patent/CN109848329B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58168940A (en) * | 1982-03-30 | 1983-10-05 | Shimadzu Corp | Testing method of bending |
| DE3247200A1 (en) * | 1982-12-21 | 1984-07-05 | Emil Wolff, Maschinenfabrik Und Eisengiesserei Gmbh, 4300 Essen | Process and bending press for the bending of a straight pipe to form a pipe bend with connected straight legs |
| JP2015123470A (en) * | 2013-12-26 | 2015-07-06 | 新日鐵住金株式会社 | Bending processing device and bending processing method |
| CN107377703A (en) * | 2017-07-13 | 2017-11-24 | 安徽盛美金属科技有限公司 | A kind of pneumatic bending machine |
| CN107442615A (en) * | 2017-07-17 | 2017-12-08 | 河南平高电气股份有限公司 | A kind of adjustable bend pipe mould |
| CN108941284A (en) * | 2018-07-24 | 2018-12-07 | 南京中高知识产权股份有限公司 | A kind of SMART METALS pipe fitting bending machine |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110508714A (en) * | 2019-08-09 | 2019-11-29 | 李志洋 | A kind of industrial steel-bar bender |
| CN110508714B (en) * | 2019-08-09 | 2020-09-11 | 新昌县利拓科技有限公司 | Industrial reinforcing steel bar bending device |
| CN110695246A (en) * | 2019-10-18 | 2020-01-17 | 石家庄建工集团有限公司 | Hydraulic construction steel bar bending equipment |
| US11846613B2 (en) | 2020-12-31 | 2023-12-19 | Bayou Holdco, Inc. | Strain testing rig and method of evaluating strain characteristics of specimen |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109848329B (en) | 2021-08-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109848329A (en) | Cold bending experiment machine for reinforced bar and its test method | |
| CN208420565U (en) | A kind of reinforcing steel bar bending tester | |
| CN204177672U (en) | A kind of For Three Points Bending Specimen clamping device for fracture toughness test | |
| CN205719366U (en) | Portable elevator pull rope tension detecting apparatus | |
| KR20160106928A (en) | Impact testing apparatus | |
| CN110132770A (en) | Reinforcing steel bar bending tester | |
| US4203308A (en) | Apparatus for testing and straightening arrow shafts and the like | |
| CN116625846B (en) | Construction steel bar bending performance detection equipment | |
| CN103592191A (en) | Toy self-adaption steel wire flexural fatigue testing machine | |
| CN110849563B (en) | Bending rigidity experiment method and device under overhead cable stretch bending combination | |
| CN209069715U (en) | Double work position steel bar cold bending test machine | |
| CN208653945U (en) | Reinforcing steel bar bending tester | |
| CN117191583B (en) | Iron casting intensity detection device | |
| CN116793844B (en) | Building material strength detection equipment and detection method | |
| CN106404555B (en) | Repeated bending test machine for reinforcing steel bars | |
| CN205607762U (en) | Experimental anchor clamps platform of using of hammer impact that falls | |
| CN210051526U (en) | Anti-dazzle board anti-wind load testing machine | |
| CN211374318U (en) | Fastening detection device for steel structure engineering | |
| CN210487501U (en) | Bending resistance testing machine | |
| CN208283176U (en) | A kind of core sample installs fixture of concrete Intensity of Breaking Tester | |
| CN112414850A (en) | Experimental device for bending steel member and use method | |
| CN215374824U (en) | Clamp for tension detector of safety net | |
| CN105277452B (en) | A kind of strip recurvation detection means and its detection method | |
| CN109668781A (en) | A kind of tensile property test equipment of door and window handle | |
| CN213148615U (en) | High fluid pressure type bending test machine of security |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |