CN208000242U - It is a kind of to be suitable for measuring reinforcing bar tensile test at room temperature and have no progeny the experimental rig of gauge length - Google Patents
It is a kind of to be suitable for measuring reinforcing bar tensile test at room temperature and have no progeny the experimental rig of gauge length Download PDFInfo
- Publication number
- CN208000242U CN208000242U CN201820341401.7U CN201820341401U CN208000242U CN 208000242 U CN208000242 U CN 208000242U CN 201820341401 U CN201820341401 U CN 201820341401U CN 208000242 U CN208000242 U CN 208000242U
- Authority
- CN
- China
- Prior art keywords
- pedestal
- reinforcing bar
- progeny
- front plate
- room temperature
- 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.)
- Expired - Fee Related
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model provides that a kind of to be suitable for measuring the have no progeny experimental rig of gauge length of reinforcing bar tensile test at room temperature include handle, leading screw, front plate, rear plate and pedestal, handle is fixedly installed in leading screw one end, front plate is arranged in the leading screw other end, front plate bottom is arranged with pedestal sliding, two groups of stable equilibrium nuts are arranged close to one end of handle in pedestal, stable equilibrium nut is connected through a screw thread with leading screw, two groups of stable equilibrium nut centre bores are arranged on same straight line, V-groove is arranged in the middle of the base, and rear plate is arranged far from stable equilibrium nut side in pedestal;Rear sample is broken by front and back clamping plate and V-groove fixed steel bars, realize that the adjustment that rear sample is broken to reinforcing bar is fixed by front plate, pedestal and leading screw, so that sample breaking portion is on the same line with sample axis when being connected together by stable equilibrium nut, Accurate Determining reinforcing bar tensile test at room temperature is had no progeny the numerical value of gauge length, to fast and accurately calculate elongation after fracture.
Description
Technical field
The utility model belongs to the technical field of experimental rig, and more specifically, the utility model is related to measure reinforcing bar room temperature
Tension test is had no progeny the technical field of equidistance line marking device.
Background technology
Reinforcing bar is widely used in as one of building trade main material in modern all kinds of buildings.In recent years, with
The direction of expanding economy and social progress, modern architecture industry towards enlargement, high stratification is developed, peace of the people to building
The requirement of full property is higher and higher, also higher and higher to the performance requirements of building bar.
The plasticity mechanical performance index one of most basic as reinforcing bar, reflection reinforcing bar generate plastic deformation under load effect
And the ability that will not be destroyed.Plasticity is the guarantee of material security reliability, if can occur when reinforcing bar is by overload
Plastic deformation, the cooperation of it and strain hardening cut down stress peak by being plastically deformed, are allowed to redistribute, to energy
Enough ensure the safety of reinforcing bar and avoid occurring fracture and early fracture suddenly, therefore, judgement plastic property of reinforcement rebar deformation quality just seems
It is particularly significant.Ordinary circumstance, the good steel of plasticity are more conducive to stress, and safety stock is big;Plastic property of reinforcement rebar index includes to have no progeny to stretch
Long rate A and contraction percentage of area Z.Elongation after fracture is one of the plasticity index for weighing reinforcing bar.The gauge length of having no progeny of reinforcing bar sample is to disconnected
Elongation has important influence, elongation after fracture to change, the gauge length of having no progeny of reinforcing bar sample with the variation for gauge length of having no progeny afterwards
Bigger, elongation after fracture is bigger;The gauge length of having no progeny of reinforcing bar sample is smaller, and elongation after fracture is smaller.Therefore, reinforcing bar sample is had no progeny mark
Away to elongation after fracture, there is great influence, if reinforcing bar sample is had no progeny, gauge length measures inaccurate, the elongation after fracture of calculating
There are dummy values, the using and constructing in construction sector to steel bar quality and bar material will be directly affected.GB/T 228.1-2010
The assay method of the 20th article of standard regulation elongation after fracture, should by the part of sample fracture it is careful make its axis with being connected together
It is on the same line, and measure sample after taking special measure to ensure the suitably contact of sample fracture part and have no progeny gauge length.
Assay method of the nothing domestic at present specifically for the 20th article of regulation elongation after fracture of GB/T 228.1-2010 standards
Measure reinforcing bar tensile test at room temperature have no progeny gauge length experimental rig research, therefore there is an urgent need for design and fabrication be suitable for test reinforcing bar
Tensile test at room temperature is had no progeny the experimental rig of gauge length.
Utility model content
Deficiency for state of the art and there are the problem of, especially for current nothing specifically for GB/T
The assay method of the 20th article of regulation elongation after fracture of 228.1-2010 standards measures reinforcing bar tensile test at room temperature and has no progeny the examination of gauge length
The technical issues of research of experiment device, the utility model, which provides, a kind of to be suitable for measuring reinforcing bar tensile test at room temperature and has no progeny gauge length
Experimental rig, it is compared with prior art, provided by the utility model a kind of to be suitable for measuring reinforcing bar tensile test at room temperature and have no progeny
The experimental rig of gauge length is simple in structure, easy to use, rear sample is broken by front and back clamping plate and V-groove fixed steel bars, by preceding
Clamping plate, pedestal and leading screw realize that the adjustment that rear sample is broken to reinforcing bar is fixed, and make sample breaking portion by stable equilibrium nut
It is on the same line with sample axis when being connected together, the size of stress is obtained by stress section and Wheatstone bridge, is led to
It crosses handle, leading screw and front plate and ensures that different reinforcing bar samples are under the conditions of same fixed stress, Accurate Determining reinforcing bar room temperature is drawn
It stretches experiment to have no progeny the numerical value of gauge length, to fast and accurately calculate elongation after fracture, is suitable for hot rolled ribbed bars, cold-rolled ribbed
The reinforcing bars such as reinforcing bar, hot rolling plain bar are had no progeny the measurement of gauge length.
To solve the above-mentioned problems, the technical solution adopted in the utility model is as follows:
It is provided by the utility model it is a kind of being suitable for measuring reinforcing bar tensile test at room temperature and have no progeny the experimental rig of gauge length, including
Handle is fixedly installed in handle, leading screw, front plate, rear plate and pedestal, leading screw one end, and front plate, fore-clamp is arranged in the leading screw other end
Wire hole is set on plate, and wire hole is adapted setting, front plate and the orthogonal setting of leading screw axis, front plate bottom and bottom with leading screw
Two groups of stable equilibrium nuts are arranged close to one end of handle in seat sliding setting, pedestal, and stable equilibrium nut passes through screw thread with leading screw
Connection, two groups of stable equilibrium nut centre bores are arranged on same straight line, and V-groove is arranged in the middle of the base, and pedestal is far from fixed
Rear plate, rear plate and the orthogonal setting of pedestal is arranged in balance nut side, and front plate is with respect to rear plate one side setting stress
The Wheatstone bridge of piece, stress section and pedestal side is electrically connected.
In the utility model, fixed mechanism is set on the pedestal between front plate and rear plate.
In the utility model, in fixed mechanism, screw rod is arranged in V-groove both sides, and screw rod is orthogonal with base upper surface
Setting, fixed plate are socketed on screw rod, and nut is arranged on the screw rod above fixed plate.
In the utility model, sliding block is arranged in front plate bottom, and the sliding slot being adapted with sliding block is arranged on pedestal.
In the utility model, sliding slot cross section is in convex shape.
In the utility model, pedestal is in channel steel shape, and installation bolt is arranged in the activity of pedestal both ends.
In the utility model, handle is L-shaped.
Following advantageous effect can be obtained using technical solution provided by the utility model:
It is provided by the utility model a kind of to be suitable for measuring reinforcing bar tensile test at room temperature and have no progeny the experimental rig structure of gauge length
Simply, easy to use, rear sample is broken by front and back clamping plate and V-groove fixed steel bars, by fixed mechanism so that sample docks
Shi Bucong V-grooves are deviate from, and realize that the adjustment for breaking rear sample to reinforcing bar is fixed by front plate, pedestal and leading screw, pass through fixation
The cooperation of balance nut and front plate and sliding slot makes sample breaking portion be in same straight line with sample axis when being connected together
On, the size of stress is obtained by stress section and Wheatstone bridge, different reinforcing bar samples are ensured by handle, leading screw and front plate
It is under the conditions of same fixed stress, Accurate Determining reinforcing bar tensile test at room temperature is had no progeny the numerical value of gauge length, to fast and accurately
Elongation after fracture is calculated, facilitates the fixation of device by installation bolt, is suitable for hot rolled ribbed bars, cold rolled reinforcing steel bar with ribs, heat
The reinforcing bars such as calendering round bar are had no progeny the measurement of gauge length.
Description of the drawings
Fig. 1 is shown as the structural schematic diagram of the utility model.
Fig. 2 is shown as the utility model using state structure diagram.
In Fig. 1-2:1-handle, 2-stable equilibrium nuts, 3-leading screws, 4-front plates, 41-stress sections, 5-V-types
Slot, 6-fixed mechanisms, 61-screw rods, 62-nuts, 63-fixed plates, 7- rear plates, 8-pedestals, 81-installation bolts,
82-sliding slots, 9-reinforcing bars break rear sample, 10-Wheatstone bridges.
Specific implementation mode
1-2 and embodiment below in conjunction with the accompanying drawings, are described in further detail specific embodiment of the present utility model, but
The utility model is not limited to following embodiments.
In the present invention, for ease of description, a kind of measurement reinforcing bar room temperature that is suitable for provided by the utility model is drawn
It stretches in the experimental rig for testing gauge length of having no progeny, the description of the relative position relation of each component is the Butut according to Figure of description 1
Mode is described, such as:The position relationships such as upper and lower, left and right are the Butut directions of foundation Figure of description 1 to determine.
The stable equilibrium nut 2 of the utility model use, leading screw 3, stress section 41, screw rod 61, nut 62, installation bolt 81
It can be bought or customize by public channel with Wheatstone bridge.
Referring to Figure of description 1-2, one kind provided by the utility model is suitable for measuring reinforcing bar tensile test at room temperature and has no progeny
Handle 1 is fixedly installed in the experimental rig of gauge length, including handle 1, leading screw 3, front plate 4, rear plate 7 and pedestal 8,3 one end of leading screw,
Front plate 4 is arranged in 3 other end of leading screw, and wire hole is arranged on front plate 4, and wire hole is adapted setting, front plate 4 and leading screw 3 with leading screw 3
The orthogonal setting of axis, 4 bottom of front plate are arranged with the sliding of pedestal 8, and pedestal 8 is arranged two groups close to one end of handle 1 to be fixed
Balance nut 2, stable equilibrium nut 2 are connected through a screw thread with leading screw 3, and two groups of 2 centre bores of stable equilibrium nut are arranged same
On straight line, it is ensured that 3 center line of leading screw is parallel with 8 upper surface of pedestal always, and V-groove 5 is arranged in 8 middle part of pedestal, and pedestal 8 is remote
Rear plate 7, rear plate 7 and 8 orthogonal setting of pedestal are set from 2 side of stable equilibrium nut, front plate 4 is with respect to rear plate 7
Stress section 41 is set on one side, and the Wheatstone bridge 10 of 8 side of stress section 41 and pedestal is electrically connected.
In the utility model, fixed mechanism 6 is set on the pedestal 8 between front plate 4 and rear plate 7, it is convenient that reinforcing bar is drawn
It has no progeny the fixation of sample 9.
In the utility model, in fixed mechanism, screw rod 61 is arranged in 5 both sides of V-groove, and screw rod 61 and 8 upper surface of pedestal are mutual
Perpendicular setting, fixed plate 63 are socketed on screw rod 61, and nut 62 is arranged on the screw rod 61 of 63 top of fixed plate, convenient to reinforcing bar
The fixation of the vertical side of rear sample 9 is broken, cooperation V-groove 5, front plate 4 and rear plate 7 limit reinforcing bar and break 9 six, rear sample
The degree of freedom in direction.
In the utility model, sliding block is arranged in 4 bottom of front plate, and the sliding slot 82 being adapted with sliding block, limitation are arranged on pedestal 8
The shake of front plate 4.
In the utility model, 82 cross section of sliding slot is in convex shape.
In the utility model, pedestal 8 is in channel steel shape, and 8 both ends activity of pedestal is arranged installation bolt 81, the present apparatus is facilitated to fix
On having the falsework or workbench of crossbeam.
In the utility model, handle 1 is L-shaped.
Be applicable in it is provided by the utility model it is a kind of be suitable for measures reinforcing bar tensile test at room temperature have no progeny gauge length experiment fill
When setting, reinforcing bar is broken into rear sample 9 and is placed in the V-groove 5 of experimental rig pedestal 8, so that sample fracture part is matched and be connected together simultaneously
Keep its axis on the same line, sample one end abuts the rear plate 7 of experimental rig, makes by rotating handle 1 and leading screw 3
The front plate 4 of Sample devices abuts the other end of sample, and ensures that sample fracture part suitably contacts, by being fixed plate 63
Top is adjacent at the top of sample, and fixed sample obtains the size of stress by stress section 41 and Wheatstone bridge 10, by handle 1,
Leading screw 3 and front plate 4 ensure that different reinforcing bar samples are under the conditions of same fixed stress, measure the gauge length of having no progeny of reinforcing bar, to
Accurately calculate elongation after fracture.
It is had no progeny the experimental rig of gauge length using the reinforcing bar tensile test at room temperature that is suitable for measuring of above-mentioned offer, passes through front and back folder
Plate 7 and 5 fixed steel bars of V-groove break rear sample 9, by fixed mechanism so that not deviating from from V-groove 5 when sample docks, pass through
Front plate 4, pedestal 8 and leading screw 3 realize that the adjustment that rear sample 9 is broken to reinforcing bar is fixed, and pass through stable equilibrium nut 2 and front plate
4 so that sample breaking portion is on the same line with sample axis when being connected together with the cooperation of sliding slot 82, pass through stress section
41 and Wheatstone bridge 10 obtain the size of stress, ensure that different reinforcing bar samples are together by handle 1, leading screw 3 and front plate 4
Under the conditions of one fixed stress, Accurate Determining reinforcing bar tensile test at room temperature is had no progeny the numerical value of gauge length, disconnected to fast and accurately calculate
Elongation afterwards facilitates the fixation of device by installation bolt 81, is suitable for hot rolled ribbed bars, cold rolled reinforcing steel bar with ribs, hot calendering
The reinforcing bars such as round bar are had no progeny the measurement of gauge length.
As described above, you can preferably realize that the utility model, the above embodiments are only to the excellent of the utility model
It selects embodiment to be described, not the scope of the utility model is defined, do not departing from the spirit of the design of the utility model
Under the premise of, the various modifications and improvement that those of ordinary skill in the art make the technical solution of the utility model should all be fallen
In the protection domain for entering the utility model determination.
Claims (7)
- Being suitable for measuring reinforcing bar tensile test at room temperature 1. a kind of and have no progeny the experimental rig of gauge length, which is characterized in that including handle, silk Handle is fixedly installed in thick stick, front plate, rear plate and pedestal, leading screw one end, and the leading screw other end is arranged front plate, is arranged on front plate Wire hole, wire hole are adapted setting, front plate and the orthogonal setting of leading screw axis with leading screw, and front plate bottom is set with pedestal sliding It sets, two groups of stable equilibrium nuts are arranged close to one end of handle in pedestal, and stable equilibrium nut is connected through a screw thread with leading screw, two groups Stable equilibrium nut centre bore is arranged on same straight line, and V-groove is arranged in the middle of the base, and pedestal is far from stable equilibrium nut one Side is arranged rear plate, rear plate and the orthogonal setting of pedestal, front plate with respect to rear plate one side setting stress section, stress section with The Wheatstone bridge of pedestal side is electrically connected.
- 2. it is as described in claim 1 it is a kind of being suitable for measuring reinforcing bar tensile test at room temperature and have no progeny the experimental rig of gauge length, spy Sign is, fixed mechanism is arranged on the pedestal between the front plate and rear plate.
- 3. it is as claimed in claim 2 it is a kind of being suitable for measuring reinforcing bar tensile test at room temperature and have no progeny the experimental rig of gauge length, spy Sign is, in the fixed mechanism, screw rod setting is fixed in V-groove both sides, screw rod and the orthogonal setting of base upper surface Sleeve-board is connected on screw rod, and nut is arranged on the screw rod above fixed plate.
- 4. it is as described in claim 1 it is a kind of being suitable for measuring reinforcing bar tensile test at room temperature and have no progeny the experimental rig of gauge length, spy Sign is that sliding block is arranged in the front plate bottom, and the sliding slot being adapted with sliding block is arranged on pedestal.
- 5. it is as claimed in claim 4 it is a kind of being suitable for measuring reinforcing bar tensile test at room temperature and have no progeny the experimental rig of gauge length, spy Sign is that the sliding slot cross section is in convex shape.
- 6. it is as described in claim 1 it is a kind of being suitable for measuring reinforcing bar tensile test at room temperature and have no progeny the experimental rig of gauge length, spy Sign is that the pedestal is in channel steel shape, and installation bolt is arranged in the activity of pedestal both ends.
- 7. it is as described in claim 1 it is a kind of being suitable for measuring reinforcing bar tensile test at room temperature and have no progeny the experimental rig of gauge length, spy Sign is that the handle is L-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820341401.7U CN208000242U (en) | 2018-03-13 | 2018-03-13 | It is a kind of to be suitable for measuring reinforcing bar tensile test at room temperature and have no progeny the experimental rig of gauge length |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820341401.7U CN208000242U (en) | 2018-03-13 | 2018-03-13 | It is a kind of to be suitable for measuring reinforcing bar tensile test at room temperature and have no progeny the experimental rig of gauge length |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208000242U true CN208000242U (en) | 2018-10-23 |
Family
ID=63839784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820341401.7U Expired - Fee Related CN208000242U (en) | 2018-03-13 | 2018-03-13 | It is a kind of to be suitable for measuring reinforcing bar tensile test at room temperature and have no progeny the experimental rig of gauge length |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208000242U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109540664A (en) * | 2018-10-31 | 2019-03-29 | 陕西航空电气有限责任公司 | Detection method for brittleness band elongation after fracture |
| CN112730062A (en) * | 2020-12-23 | 2021-04-30 | 哈电集团（秦皇岛）重型装备有限公司 | Auxiliary measurement device and method for elongation after fracture and reduction of area in tensile test |
-
2018
- 2018-03-13 CN CN201820341401.7U patent/CN208000242U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109540664A (en) * | 2018-10-31 | 2019-03-29 | 陕西航空电气有限责任公司 | Detection method for brittleness band elongation after fracture |
| CN112730062A (en) * | 2020-12-23 | 2021-04-30 | 哈电集团（秦皇岛）重型装备有限公司 | Auxiliary measurement device and method for elongation after fracture and reduction of area in tensile test |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Zhao et al. | Experimental investigation on the bearing mechanism of perfobond rib shear connectors | |
| CN109507041B (en) | Concrete I-II composite crack fracture performance testing method | |
| CN104269088B (en) | Mechanical experimental device and method for conducting experiment by applying same | |
| CN105651684B (en) | The detection method of post-tensioned concrete structure friction loss and anchorage loss | |
| CN208000242U (en) | It is a kind of to be suitable for measuring reinforcing bar tensile test at room temperature and have no progeny the experimental rig of gauge length | |
| CN102721637B (en) | Multi-functional test system and method for concrete durability under action of continuous pressure | |
| CN110887959B (en) | Deformation stress detection device and detection method for on-site cement-based material | |
| CN105043865A (en) | Testing method for concrete damage fracture performance under double-field coupling | |
| Sun et al. | Mechanical properties of Galfan-coated steel cables at elevated temperatures | |
| Hu et al. | Behaviour of stainless steel bolts after exposure to elevated temperatures | |
| Liu et al. | Flexural behavior of concrete-filled rectangular steel tubular composite truss beams in the negative moment region | |
| Cintra et al. | Parameters affecting local buckling response of pultruded GFRP I-columns: Experimental and numerical investigation | |
| Hu et al. | Elevated temperature properties of ASTM A992 steel | |
| Wang et al. | Effects of biaxial loading path on seismic behavior of T-shaped RC walls | |
| Zhan et al. | Experimental and numerical investigations on shear behavior of large keyed tooth joints | |
| Shu et al. | Experimental study of cold-drawn duplex stainless steel circular tubes under axial compression | |
| Koziński et al. | Experimental research and analysis of load capacity and deformability of slender high strength concrete columns in biaxial bending | |
| Muhammad et al. | Evaluation of deflection and flexural performance of reinforced concrete beams with glass fiber reinforced polymer bars | |
| CN106840474B (en) | A kind of axial stress measuring method of concrete support | |
| Lou et al. | Shear behavior of stainless-steel plate connectors for insulated precast concrete sandwich panels | |
| CN108801808A (en) | A kind of anti-shear concrete Strength Testing Methods | |
| CN202330250U (en) | Testing device for directly measuring bonding performance of early-stage concrete and steel bars | |
| CN208476693U (en) | A kind of construction material crush test test device | |
| Kristiawan | Strength shrinkage and creep of concrete in tension and compression | |
| CN213778901U (en) | Engineering structure strain sensing testing device based on shape memory alloy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181023 Termination date: 20190313 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |