CN107764738B - A kind of steel fiber pulling device in concrete - Google Patents
A kind of steel fiber pulling device in concrete Download PDFInfo
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- CN107764738B CN107764738B CN201711010947.0A CN201711010947A CN107764738B CN 107764738 B CN107764738 B CN 107764738B CN 201711010947 A CN201711010947 A CN 201711010947A CN 107764738 B CN107764738 B CN 107764738B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 45
- 239000010959 steel Substances 0.000 title claims abstract description 45
- 239000000835 fiber Substances 0.000 title claims abstract description 26
- 238000012360 testing method Methods 0.000 claims abstract description 71
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 35
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 35
- 230000009194 climbing Effects 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 229910000756 V alloy Inorganic materials 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 description 4
- 238000012681 fiber drawing Methods 0.000 description 3
- 238000005491 wire drawing Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
本发明公开了一种混凝土中钢纤维拉拔装置，包括基座、机箱、机架、试件固定装置和拉拔装置，机架由竖向支撑和横梁组成，横梁的底面上安装有液压拉力装置，液压拉力装置的底部输出端上连接有夹具固定装置，拉拔装置包括两个夹板，夹板的内侧面上分别连接有铝板，试件固定装置包括固定底座、水平定距立板、水平挡板和垂直升降立板，固定底座上放置有试件，试件内的钢纤维的上部被夹持在铝板之间。本发明采用弧形牙口结构的铝板，使得夹紧牢固可靠，增加了拉拔钢丝测试力的准确性，提升了拉拔钢丝测试力度的最大值；试件固定装置的夹持尺寸均可调节，拉拔操作方便、数据准确率高，提高了拉拔试验的效率。
The invention discloses a steel fiber pulling device in concrete, comprising a base, a chassis, a frame, a specimen fixing device and a pulling device. The frame is composed of a vertical support and a beam, and a hydraulic tension force is installed on the bottom surface of the beam. The bottom output end of the hydraulic tension device is connected with a clamp fixing device. The pulling device includes two splints. The inner sides of the splints are respectively connected with aluminum plates. The specimen fixing device includes a fixed base, a horizontal distance vertical plate, and a horizontal block. The plate and the vertical lifting vertical plate, the test piece is placed on the fixed base, and the upper part of the steel fiber in the test piece is clamped between the aluminum plates. The invention adopts the aluminum plate with the arc-shaped tooth structure, so that the clamping is firm and reliable, the accuracy of the test force of the drawn steel wire is increased, and the maximum value of the test force of the drawn steel wire is improved; the clamping size of the test piece fixing device can be adjusted, The pulling operation is convenient and the data accuracy is high, which improves the efficiency of the pulling test.
Description
Technical Field
The invention relates to the technical field of test equipment, in particular to a steel fiber drawing device in concrete.
Background
In the construction operation process, the concrete reinforcement needs to test the bonding capability of the interface between the steel fiber and the concrete of a test piece so as to test the quality of the concrete reinforcement structure and ensure the quality of the construction engineering. According to the traditional testing device, steel fibers are clamped and fixed in a manual spiral clamping or steel wire winding mode, and the problems that the steel fibers with high strength and high hardness are not firm in clamping, easy to clamp and break, incapable of winding and the like easily occur in the drawing process; adopt the bench vice to press from both sides tight fixedly to the test piece, the clamp force that has the bench vice influences the test result and the unstable phenomenon of clamp force in the testing process, is unfavorable for going on of test.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a steel fiber drawing device in concrete.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a steel fibre draw-off gear in concrete, includes base, quick-witted case, frame, test piece fixing device and draw-off gear, the machine case is located the top of base, test piece fixing device is located the top of machine case, draw-off gear is located test piece fixing device directly over, the frame comprises fixed connection's crossbeam between the top of the vertical braces of fixed connection both sides and base, install hydraulic tension device on the bottom surface of crossbeam, be connected with anchor clamps fixing device on hydraulic tension device's the bottom output, draw-off gear includes two splint of fixed connection on anchor clamps fixing device medial surface, splint symmetrical arrangement on anchor clamps fixing device, be connected with aluminum plate on the medial surface of splint respectively, test piece fixing device is including the unable adjustment base of installation at quick-witted case top, connect two horizontal distance risers in unable adjustment base top, test piece fixing device is including the unable adjustment base, The test piece fixing device comprises a horizontal baffle connected to two side ends of a horizontal distance vertical plate and a vertical lifting vertical plate connected to the horizontal distance vertical plate, a test piece is placed on a fixing base of the test piece fixing device, the test piece is fixed on the fixing base through the horizontal distance vertical plate and the vertical lifting vertical plate, and the upper portion of steel fibers in the test piece is clamped between aluminum plates.
Preferably, the clamping plate is made of chrome-vanadium alloy steel, two pin holes are formed in two side faces of the clamping plate respectively, and the clamping plate is connected with the clamp fixing device through screws inserted into the pin holes.
Preferably, the side face of the clamping plate connected with the aluminum plate is provided with a plurality of transverse tooth-shaped tooth mouths which are uniformly distributed.
Preferably, the aluminum plate is provided with a plurality of uniformly distributed transverse rectangular tooth mouths on the side surface connected with the clamping plate, and the rectangular tooth mouths are in mutual staggered occlusion connection with the tooth-shaped tooth mouths on the clamping plate.
Preferably, the aluminum plate is provided with a plurality of uniformly distributed vertical parabolic teeth openings on the side opposite to the transverse rectangular teeth openings, the parabolic teeth openings on the opposite surfaces of the two aluminum plates are mutually staggered and distributed, and the steel fibers are positioned between the convex teeth and the concave teeth of the two opposite parabolic teeth openings.
Preferably, the top surface of the fixed base is provided with two parallel track chutes, the horizontal distance-setting vertical plate is perpendicular to the track chutes, track sliding blocks are arranged in the track chutes, and the horizontal distance-setting vertical plate is respectively and fixedly connected to the two corresponding track sliding blocks in the two track chutes.
Preferably, the outer side end of the track sliding block is provided with a fixing bolt, the track sliding block is locked and fixed on the track sliding groove through the fixing bolt, and a plurality of sliding balls are arranged at the joint of the bottom surface of the track sliding block and the bottom surface of the track sliding groove.
Preferably, two groups of spiral climbing devices are arranged on the inner side surface of the horizontal distance-fixing vertical plate, two ends of a spiral rod in each spiral climbing device are respectively connected with the upper flanging and the lower flanging of the vertical lifting vertical plate through bearings, and the top end of the spiral rod is connected with a lifting torsion handle.
According to the invention, the aluminum plate for clamping the steel fibers adopts an arc-shaped tooth mouth structure, so that the steel wire drawing fixture can adapt to the clamping of steel wires with different radiuses, or simultaneously clamp a plurality of steel wires at different positions, the accuracy of the steel wire drawing testing force is increased, meanwhile, the arc-shaped tooth mouth can greatly increase the contact area between the steel fibers and the aluminum plate, the frictional engagement force between the steel fibers and the aluminum plate can be effectively increased, the clamping is firm and reliable, and the maximum value of the steel wire drawing testing force is improved; the clamping size of the test piece fixing device in the horizontal direction and the vertical direction can be adjusted, the test device can adapt to the test requirements of test pieces of various sizes, a mode of compressing and fixing is adopted, the problem that the influence of an instrument in the drawing process of a traditional device causes large data discreteness is avoided, the drawing operation is convenient, the data accuracy rate is high, and the drawing test efficiency is improved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the splint of the present invention.
Fig. 3 is a schematic structural view of an aluminum plate of the present invention.
Fig. 4 is a schematic view of the connection structure of the clamping plate and the aluminum plate.
Fig. 5 is a schematic structural diagram of the aluminum plate clamping steel fibers according to the invention.
FIG. 6 is a front view of the specimen holder of the present invention.
FIG. 7 is a top view of the specimen holder of the present invention.
FIG. 8 is a side view of the specimen holder of the present invention.
In the figure: the device comprises a base 1, a chassis 2, a vertical support 3, a cross beam 4, a hydraulic tension device 5, a clamp fixing device 6, a clamping plate 7, an aluminum plate 8, a fixing base 9, a horizontal distance vertical plate 10, a horizontal baffle 11, a vertical lifting vertical plate 12, a pin hole 13, a track sliding groove 14, a track sliding block 15, a sliding ball 16, a test piece 17, steel fibers 18, a spiral climbing device 19, a lifting torsion handle 20 and a displacement meter 21.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-8, a steel fibre draw-off gear in concrete, including base 1, quick-witted case 2, frame, test piece fixing device and draw-off gear, quick-witted case 2 is located the top of base 1, and test piece fixing device is located the top of quick-witted case 2, and draw-off gear is located test piece fixing device directly over, its characterized in that: the frame is composed of vertical supports 3 fixedly connected with two sides of a base 1 and a crossbeam 4 fixedly connected between the tops of the vertical supports 3, a hydraulic tension device 5 is installed on the bottom surface of the crossbeam 4, a clamp fixing device 6 is connected on the output end of the bottom of the hydraulic tension device 5, a drawing device comprises two clamping plates 7 fixedly connected on the inner side surface of the clamp fixing device 6, the size of each clamping plate is 150mm 100mm 20mm, the clamping plates 7 are symmetrically arranged on the clamp fixing device 6, the clamping plates 7 are made of wear-resistant, corrosion-resistant and high-strength chrome vanadium alloy steel materials, two pin holes 13 are respectively arranged on two side surfaces of each clamping plate, the hole radius of each pin hole 13 is 5mm, the hole interval is 80mm, the clamping plates 7 are connected with the clamp fixing device 6 through screws inserted into the pin holes 13, the screw radii are 3.8mm, the lengths are 50mm, the inner side surfaces of the clamping plates 7, the aluminum plate 8 is 150mm 100mm 7mm in size, the splint 7 is provided with a plurality of transverse tooth-shaped tooth mouths which are uniformly distributed on the side connected with the aluminum plate 8, the tooth-shaped tooth mouths are 4mm in length and 3mm in distance, the aluminum plate 8 is provided with a plurality of transverse rectangular tooth mouths which are uniformly distributed on the side connected with the splint 7, the rectangular tooth mouths are 2mm 3.5mm in size and 3mm in distance, the rectangular tooth mouths are mutually and alternately meshed and connected with the tooth-shaped tooth mouths on the splint 7, the aluminum plate 8 is mainly used for increasing the mechanical meshing capability and the friction capability between the splint 7 and the steel wire, the aluminum plate 8 is provided with a plurality of vertical parabolic tooth mouths which are uniformly distributed on the side opposite to the transverse rectangular tooth mouths, the arc length of the parabolic tooth mouths is 19.8mm and 0.76mm in width, the parabolic tooth mouths on the opposite surfaces of the two aluminum plates 8 are mutually staggered and distributed, the convex teeth of one aluminum plate 8 are over against the concave teeth of the other aluminum plate 8, the steel fiber 18 is positioned between the convex teeth and the concave teeth of two opposite parabola tooth mouths, can adapt to the clamping of steel wires with different radiuses, or simultaneously clamps a plurality of steel wires at different positions, thereby increasing the accuracy of the testing force of the drawn steel wire, simultaneously the arc tooth mouth can greatly increase the contact area between the steel fiber 18 and the aluminum plate 8, and can effectively increase the frictional engagement force between the steel fiber 18 and the aluminum plate 8, so that the clamping is firm and reliable, and the maximum value of the testing force of the drawn steel wire is improved, the test piece fixing device comprises a fixed base 9 arranged at the top of a case 2, two horizontal distance vertical plates 10 connected above the fixed base 9, horizontal baffle plates 11 connected at the two side ends of the horizontal distance vertical plates 10 and vertical lifting vertical plates 12 connected on the horizontal distance vertical plates 10, two parallel track chutes 14 are arranged on the top surface of the fixed base 9, and the horizontal distance vertical plates 10 are vertical, the test device is characterized in that a track sliding block 15 is arranged in a track sliding groove 14, a horizontal distance vertical plate 10 is respectively and fixedly connected to two corresponding track sliding blocks 15 in the two track sliding grooves 14, a fixing bolt is arranged at the outer side end of each track sliding block 15, the track sliding blocks 15 are fixedly locked on the track sliding grooves 14 through the fixing bolt, a plurality of sliding balls 16 are arranged at the joint of the bottom surface of each track sliding block 15 and the bottom surface of each track sliding groove 14, two groups of spiral climbing devices 19 are arranged on the inner side surface of each horizontal distance vertical plate 10, two ends of a spiral rod in each spiral climbing device 19 are respectively connected with upper and lower flanges of a vertical lifting vertical plate 12 through bearings, the top end of each spiral rod is connected with a lifting torsion handle 20, the clamping sizes of the test piece fixing device in the horizontal direction and the vertical direction can be adjusted, the test device can meet the test requirements of test pieces, drawing convenient operation, data rate of accuracy are high, have improved and have drawn experimental efficiency, have placed test piece 17 on test piece fixing device's unable adjustment base 9, and test piece 17 is fixed on unable adjustment base 9 through horizontal distance riser 10 and vertical lift riser 12, and the upper portion of the steel fibre 18 in the test piece 17 is by the centre gripping between aluminum plate 8, is equipped with displacement meter 21 between unable adjustment base 9's the top surface and anchor clamps fixing device 6's the outside bottom.
The working principle is as follows: when the device is used, a test piece 17 is placed on a fixed base 9 of a test piece fixing device, a horizontal distance-fixing vertical plate 10 is adjusted by adjusting the position of a track sliding block 15 in a track sliding groove 14, the inner side of a vertical lifting vertical plate 12 is turned over to be positioned above the test piece 17, the track sliding block 15 is fixed on the fixed base 9 through a fixing bolt on the track sliding block 15, the adjustment and the fixation of the horizontal position of the test piece fixing device are completed, a twisting handle 20 is manually stirred and lifted, the vertical lifting vertical plate 12 moves downwards on the horizontal distance-fixing vertical plate 10, the turned edge of the inner side of the vertical lifting vertical plate 12 is tightly pressed on the top surface of the test piece 17, the fixation of the test piece 17 in the vertical direction is completed, the distance between two clamp plates 7 is adjusted through a clamp fixing device 6, a steel fiber 18 on the test piece 17 is tightly clamped between arc tooth mouths on two, the steel fibre 18 is lifted and the relevant test data is displayed by means of a displacement meter 21.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711010947.0A CN107764738B (en) | 2017-10-26 | 2017-10-26 | A kind of steel fiber pulling device in concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711010947.0A CN107764738B (en) | 2017-10-26 | 2017-10-26 | A kind of steel fiber pulling device in concrete |
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| Publication Number | Publication Date |
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| CN107764738A CN107764738A (en) | 2018-03-06 |
| CN107764738B true CN107764738B (en) | 2021-02-02 |
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| CN201711010947.0A Active CN107764738B (en) | 2017-10-26 | 2017-10-26 | A kind of steel fiber pulling device in concrete |
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Families Citing this family (6)
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| CN110411828B (en) * | 2019-07-17 | 2022-03-25 | 长沙理工大学 | Using method of fiber-concrete drawing test device based on drawing bench |
| CN110686986A (en) * | 2019-10-12 | 2020-01-14 | 宁波大学 | Fixing device for single-side shearing of FRP test piece |
| CN110802738B (en) * | 2019-11-22 | 2021-04-27 | 佛山科学技术学院 | A device for orienting steel fibers into concrete |
| CN113172104A (en) * | 2021-05-07 | 2021-07-27 | 江苏艾可森钢绳有限公司 | Steel wire drawing experimental equipment with recording function |
| CN113529681B (en) * | 2021-06-04 | 2022-06-14 | 吉林建筑大学 | A subgrade dynamic triaxial rebound modulus tester |
| CN114354486A (en) * | 2022-01-06 | 2022-04-15 | 江苏科技大学 | Device and method for testing bonding performance of geomembrane |
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