CN114905442A - Special fixture for loading and positioning high-strength steel wire - Google Patents
Special fixture for loading and positioning high-strength steel wire Download PDFInfo
- Publication number
- CN114905442A CN114905442A CN202210709071.3A CN202210709071A CN114905442A CN 114905442 A CN114905442 A CN 114905442A CN 202210709071 A CN202210709071 A CN 202210709071A CN 114905442 A CN114905442 A CN 114905442A
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- China
- Prior art keywords
- steel plate
- threaded
- steel wire
- loading
- strength steel
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- 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.)
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 174
- 239000010959 steel Substances 0.000 title claims abstract description 174
- 238000006073 displacement reaction Methods 0.000 abstract description 10
- 238000012360 testing method Methods 0.000 abstract description 10
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- 150000003839 salts Chemical class 0.000 description 5
- 239000007921 spray Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
Abstract
A special fixture for loading and positioning a high-strength steel wire relates to a special fixture. The upper steel plate and the lower steel plate are arranged in a corresponding mode in the vertical direction at intervals, a through hole is formed in the center of the upper steel plate, a screw hole is formed in the center of the lower steel plate, two opposite ends of the upper steel plate and the two opposite ends of the lower steel plate are provided with openings inwards respectively, the inner side ends of the openings are arranged to be semi-arc surfaces, two nuts are symmetrically arranged on two sides of the lower surface of the lower steel plate and are coaxially matched with the semi-arc surfaces of the two openings of the lower steel plate respectively, a step surface is machined at the position, close to the upper end, of a threaded steel column and supported on the lower surface of the upper steel plate, the upper end of the threaded steel column extends out of the through hole of the upper steel plate and is vertically fixed with a rotating rod, and a threaded section is machined at the lower end of the threaded steel column and is in screwed connection with the screw hole of the lower steel plate. The device can ensure that the high-strength steel wire keeps unchanged in displacement after being loaded, is convenient to carry out loading and unloading work of the high-strength steel wire, reduces the loss of corrosion products, and is beneficial to improving the accuracy of test results.
Description
Technical Field
The invention relates to a special fixture, in particular to a special fixture for loading and positioning a high-strength steel wire, and belongs to the technical field of mechanics of materials testing.
Background
The clamp assembly is required to be used for alternating load and static load working conditions in the salt spray test, and the clamp assembly is mainly used for carrying out displacement fixation on the high-strength steel wire after loading and enabling the high-strength steel wire to still maintain stress during loading.
However, under the existing technical conditions, the conventional clamp cannot meet the requirement of convenient assembly and disassembly, and meanwhile, the size of the former clamp is too large, so that the operation in a salt spray box is not facilitated. Therefore, it is necessary to design a special fixture for positioning the displacement of the high-strength steel wire in the salt spray test.
Disclosure of Invention
In order to solve the defects in the background art, the invention provides the special fixture for loading and positioning the high-strength steel wire, which can ensure that the displacement of the high-strength steel wire is kept unchanged after loading, simultaneously facilitate the loading and unloading work of the high-strength steel wire, reduce the loss of corrosion products and contribute to improving the accuracy of test results.
In order to achieve the purpose, the invention adopts the following technical scheme: a high-strength steel wire loading and positioning special fixture comprises a high-strength steel wire positioning assembly and a threaded steel column supporting assembly, wherein the high-strength steel wire positioning assembly comprises an upper steel plate, a lower steel plate and two nuts, the upper steel plate and the lower steel plate are arranged at intervals in the vertical direction in a corresponding mode, a through hole is formed in the center of the upper steel plate, a screw hole is formed in the center of the lower steel plate, openings are formed in the two opposite ends of the upper steel plate and the lower steel plate in an inwards concave mode respectively, the inner side ends of the openings are arranged to be semi-arc surfaces, the two nuts are symmetrically arranged on the two sides of the lower surface of the lower steel plate, the two nuts are coaxially matched with the semi-arc surfaces of the two openings of the lower steel plate respectively, the threaded steel column supporting assembly comprises a threaded steel column and a rotating rod, a step surface is machined in the position, close to the upper end of the threaded steel column, the stepped steel column extends out of the through hole of the upper steel plate, and the rotating rod is vertically fixed, the lower end of the threaded steel column is provided with a threaded section which is matched with the screw hole of the lower steel plate in a screwing way.
Compared with the prior art, the invention has the beneficial effects that: the invention can ensure that the high-strength steel wire keeps the displacement unchanged after being loaded, simultaneously is convenient to carry out the loading and unloading work of the high-strength steel wire, reduces the loss of corrosion products, is beneficial to improving the accuracy of test results, utilizes the opening of the upper steel plate to clamp the pier head of the high-strength steel wire, utilizes the opening of the lower steel plate to be matched with the nut to fix the tail end of the high-strength steel wire, has simple and reasonable fixing form, can prevent the high-strength steel wire from generating sliding displacement, meets the requirement of fixing the loaded high-strength steel wire, meets the simple and convenient requirement of loading and unloading the high-strength steel wire by the design of the opening, is beneficial to avoiding the loss of the corrosion products in the process of unloading, adopts the threaded steel column to support the upper steel plate and the lower steel plate in the middle, bears the stress of the high-strength steel wires at two sides, can reduce the generation of asymmetric displacement in the left and right direction, ensures that the stress error of the high-strength steel wires at two sides is within an acceptable range, through the rotation of detachable rotating rod control screw thread steel column, repeatedly usable can reduce the anchor clamps volume moreover, conveniently carries and puts.
Drawings
FIG. 1 is an isometric view of the overall construction of the present invention;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a side view of FIG. 1;
FIG. 4 is a top view of FIG. 1;
FIG. 5 is an isometric view of the high tensile wire positioning assembly of the present invention;
FIG. 6 is an isometric view of a threaded steel post support assembly of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying 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, rather than all of the embodiments, and based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.
As shown in fig. 1 to 6, a special fixture for loading and positioning a high-strength steel wire comprises two parts, namely a high-strength steel wire positioning assembly and a threaded steel column supporting assembly.
Referring to fig. 5, the high-strength steel wire positioning assembly comprises an upper steel plate 1, a lower steel plate 2 and two nuts 3, wherein the upper steel plate 1 and the lower steel plate 2 are correspondingly arranged in the vertical direction at intervals and used for loading and positioning the high-strength steel wire, a through hole is formed in the center of the upper steel plate 1, a screw hole is formed in the center of the lower steel plate 2, two opposite ends of the upper steel plate 1 and the lower steel plate 2 are inwards provided with openings for inserting and installing the high-strength steel wire, the inner side end of each opening is formed into a semicircular arc surface to facilitate the high-strength steel wire to be attached and improve the stability, the two nuts 3 are symmetrically arranged on two sides of the lower steel plate 2, and the two nuts 3 are respectively in coaxial fit with the semicircular arc surfaces of the two openings of the lower steel plate 2.
Referring to fig. 6, the threaded steel column support assembly comprises a threaded steel column 4 and a rotating rod 5, a step surface is machined at a position, close to the upper end, of the threaded steel column 4, the rotating rod 5 is vertically fixed to the upper end of the threaded steel column 4, and a thread section is machined at the lower end of the threaded steel column 4.
Referring to fig. 1 to 4, the step surface of the threaded steel column 4 is supported on the lower surface of the upper steel plate 1, the upper end of the threaded steel column 4 extends out of the through hole of the upper steel plate 1, and the thread section of the lower end of the threaded steel column 4 is screwed with the screw hole of the lower steel plate 2.
Referring to fig. 4, two openings of the upper steel plate 1 are used for clamping the high-strength steel wire pier heads, further, in order to ensure that the high-strength steel wires are stably prevented from displacement after being loaded, spherical grooves are respectively machined in the positions, corresponding to the inner side ends of the two openings, of the upper surface of the upper steel plate 1, and the high-strength steel wire pier heads can be clamped in the spherical grooves, so that the loading slippage is avoided.
The notch of the lower steel plate 2 is matched with the nut 3 to fix the tail end of the high-strength steel wire, and similarly, in order to guarantee that the high-strength steel wire is stably prevented from displacement after being loaded, positioning grooves matched with the end faces of the nut 3 are respectively machined in the positions, corresponding to the inner side ends of the two notches, of the lower surface of the lower steel plate 2, so that the nut 3 can be clamped in the positioning grooves, and the loading slippage is prevented.
In addition, it should set up to be for dismantling fixed form to rotate stick 5, for example adopt the cartridge to fix the structure in the radial perforation of screw steel column 4 upper end preprocessing, but not only repeatedly usable, pull down moreover and rotate stick 5 and can reduce the anchor clamps volume.
Notches are formed in the left side and the right side of an upper steel plate 1 of the clamp and used for loading and unloading high-strength steel wires, and spherical grooves are formed in the tops of the notches so as to facilitate positioning of the ends of the high-strength steel wire piers; the left side and the right side of the lower steel plate 2 are provided with notches for loading and unloading the high-strength steel wire, and the bottom of each notch is provided with a positioning groove for positioning a nut 3 connected with the tail end of the high-strength steel wire; a step surface is processed at the position of the threaded steel column 4 close to the upper end and is attached to the lower surface of the upper steel plate 1 through the step surface, so as to achieve the function of supporting the force of the deformation of the high-strength steel wire, the lower end of the threaded steel column 4 is in threaded connection with the lower steel plate 2, the threaded steel column 4 is rotated by the rotating rod 5 to realize the up-and-down movement of the threaded steel column 4, whether the step surface at the upper end of the threaded steel column 4 is attached to the lower surface of the upper steel plate 1 or not is controlled, the supporting and unloading requirements are met, the high-strength steel wire exposed between the upper steel plate 1 and the lower steel plate 2 is used as a test material, the upper steel plate 1 is moved by rotating the threaded steel column 4 in the loading process, so that the high-strength steel wire reaches the height after the high-strength steel wire is loaded, the tensile deformation of the high-strength steel wire is fixed, the high-strength steel wire can be easily assembled and disassembled by the whole clamp, and the position of the high-strength steel wire after being loaded can be kept fixed, so that the high-strength steel wire is subjected to test research under different working conditions.
The use process of the special high-strength steel wire loading and positioning clamp is as follows:
(1) respectively enabling two high-strength steel wires to pass through the gaps, attaching the high-strength steel wire pier heads to the upper steel plate 1, and clamping the high-strength steel wires in the spherical grooves;
(2) the tail end of the high-strength steel wire is connected with the lower steel plate 2 through two nuts 3 respectively, and the nuts 3 are clamped in the positioning grooves of the lower steel plate 2;
(3) an external loading device is used for loading the upper steel plate 1 and the lower steel plate 2, so that the high-strength steel wire is deformed, and meanwhile, the upper steel plate 1 and the lower steel plate 2 generate relative displacement;
(4) the threaded steel column 4 is moved upwards by rotating the rotating rod 5 until the step surface is attached to the lower surface of the upper steel plate 1, and at the moment, the threaded steel column 4 starts to support the force required by deformation of the high-strength steel wire;
(5) removing the external loading device, placing the clamp inside a salt spray box, and performing tests on the high-strength steel wire under different working conditions;
(6) after the test is finished, the clamp is removed from the salt spray box, and the threaded steel column 4 is moved downwards by rotating the rotating rod 5 to finish the force unloading task;
(7) and taking down the nut 3 at the tail end of the high-strength steel wire, and taking down the high-strength steel wire from the notches of the upper top plate 1 and the lower top plate 2.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (4)
1. The utility model provides a high-strength steel wire loading location special fixture which characterized in that: the high-strength steel wire positioning assembly comprises an upper steel plate (1), a lower steel plate (2) and two nuts (3), wherein the upper steel plate (1) and the lower steel plate (2) are arranged at intervals in the vertical direction in a corresponding mode, a through hole is formed in the center of the upper steel plate (1), a screw hole is formed in the center of the lower steel plate (2), openings are formed in two opposite ends of the upper steel plate (1) and the lower steel plate (2) in an inwards concave mode respectively, the inner side ends of the openings are arranged to be semi-arc surfaces, the two nuts (3) are symmetrically arranged on two sides of the lower surface of the lower steel plate (2), the two nuts (3) are coaxially matched with the semi-arc surfaces of the two openings of the lower steel plate (2) respectively, the threaded steel column supporting assembly comprises a threaded steel column (4) and a rotating rod (5), and a step surface is machined in the position, close to the upper end, of the threaded steel column (4), and supported on the lower surface of the upper steel plate (1), the upper end of the threaded steel column (4) extends out of the through hole of the upper steel plate (1) and is vertically fixed with a rotating rod (5), and a threaded section is machined at the lower end of the threaded steel column (4) and is matched with the threaded hole of the lower steel plate (2) in a screwing mode.
2. The special fixture for loading and positioning the high-strength steel wire according to claim 1, wherein: spherical grooves are respectively machined in the positions, corresponding to the inner side ends of the two openings, of the upper surface of the upper steel plate (1).
3. The special fixture for loading and positioning the high-strength steel wire according to claim 1, wherein: and positioning grooves matched with the end faces of the nuts (3) are respectively machined on the lower surface of the lower steel plate (2) and at positions corresponding to the inner side ends of the two openings.
4. The special fixture for loading and positioning the high-strength steel wire according to claim 1, wherein: the rotating rod (5) is in a detachable fixed form and is inserted and fixed in a prefabricated radial through hole in the upper end of the threaded steel column (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210709071.3A CN114905442B (en) | 2022-06-21 | 2022-06-21 | Special fixture for loading and positioning high-strength steel wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210709071.3A CN114905442B (en) | 2022-06-21 | 2022-06-21 | Special fixture for loading and positioning high-strength steel wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114905442A true CN114905442A (en) | 2022-08-16 |
| CN114905442B CN114905442B (en) | 2024-01-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210709071.3A Active CN114905442B (en) | 2022-06-21 | 2022-06-21 | Special fixture for loading and positioning high-strength steel wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114905442B (en) |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204205395U (en) * | 2014-09-16 | 2015-03-11 | 国家电网公司 | Cross-arm bracket |
| CN204843932U (en) * | 2015-08-10 | 2015-12-09 | 常州市惠涛纺织有限公司 | Clamp down on type screw -thread steel anchor clamps |
| WO2016119331A1 (en) * | 2015-01-30 | 2016-08-04 | 中国矿业大学 | Bending fatigue damage monitoring system for steel wire rope under action of corrosion-alternating load coupling |
| WO2016153522A1 (en) * | 2015-03-26 | 2016-09-29 | Halliburton Energy Services, Inc. | Corrosion tester tool for use during drill stem test |
| CN106290122A (en) * | 2015-06-10 | 2017-01-04 | 无锡金利达生态科技有限公司 | A kind of PVC height densification viscosity steel wire grid corrosion depth method of testing |
| CN206177710U (en) * | 2016-10-18 | 2017-05-17 | 北京科技大学 | Device of test metal material stress corrosion action under fluid high pressure |
| CN207448285U (en) * | 2017-10-20 | 2018-06-05 | 成都电车汇新能源科技有限公司 | A kind of clamping device for auto parts machinery processing |
| CN208420645U (en) * | 2018-07-18 | 2019-01-22 | 马胜军 | Oil field pipe corrosion monitor |
| CO2019007000A1 (en) * | 2018-07-02 | 2019-08-30 | Ypf S A | Tool for measuring corrosion in oil wells and method of measuring corrosion. |
| CN110186756A (en) * | 2019-05-06 | 2019-08-30 | 东南大学 | A kind of device and method for testing extra-high strength wire stress corrosion |
| CN111443030A (en) * | 2020-04-03 | 2020-07-24 | 江苏法尔胜缆索有限公司 | Method for testing salt spray corrosion resistance of steel wire in stress state |
| CN211991925U (en) * | 2020-04-30 | 2020-11-24 | 浙江铭博汽车部件股份有限公司 | Clamping mechanism for adjusting mounting block |
| CN212168582U (en) * | 2020-03-26 | 2020-12-18 | 承德承钢工程技术有限公司 | Flattening device for innermost deformed belt head of cold-rolled galvanized steel coil |
| CN212255009U (en) * | 2020-04-03 | 2020-12-29 | 江苏法尔胜缆索有限公司 | Device for testing salt spray corrosion resistance of steel wire in stress state |
| CN112649352A (en) * | 2020-12-24 | 2021-04-13 | 江苏东纲金属制品有限公司 | Device and method for testing salt spray corrosion resistance of steel wire in bending and stretching state |
| CN213004826U (en) * | 2020-07-14 | 2021-04-20 | 苏州九四四九智能科技有限公司 | Steel wire clamp |
| CN215004566U (en) * | 2021-02-04 | 2021-12-03 | 山东华岳勘察测绘有限公司 | Engineering reconnaissance geotechnical sample segmentation ware |
-
2022
- 2022-06-21 CN CN202210709071.3A patent/CN114905442B/en active Active
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204205395U (en) * | 2014-09-16 | 2015-03-11 | 国家电网公司 | Cross-arm bracket |
| WO2016119331A1 (en) * | 2015-01-30 | 2016-08-04 | 中国矿业大学 | Bending fatigue damage monitoring system for steel wire rope under action of corrosion-alternating load coupling |
| WO2016153522A1 (en) * | 2015-03-26 | 2016-09-29 | Halliburton Energy Services, Inc. | Corrosion tester tool for use during drill stem test |
| CN106290122A (en) * | 2015-06-10 | 2017-01-04 | 无锡金利达生态科技有限公司 | A kind of PVC height densification viscosity steel wire grid corrosion depth method of testing |
| CN204843932U (en) * | 2015-08-10 | 2015-12-09 | 常州市惠涛纺织有限公司 | Clamp down on type screw -thread steel anchor clamps |
| CN206177710U (en) * | 2016-10-18 | 2017-05-17 | 北京科技大学 | Device of test metal material stress corrosion action under fluid high pressure |
| CN207448285U (en) * | 2017-10-20 | 2018-06-05 | 成都电车汇新能源科技有限公司 | A kind of clamping device for auto parts machinery processing |
| CO2019007000A1 (en) * | 2018-07-02 | 2019-08-30 | Ypf S A | Tool for measuring corrosion in oil wells and method of measuring corrosion. |
| CN208420645U (en) * | 2018-07-18 | 2019-01-22 | 马胜军 | Oil field pipe corrosion monitor |
| CN110186756A (en) * | 2019-05-06 | 2019-08-30 | 东南大学 | A kind of device and method for testing extra-high strength wire stress corrosion |
| CN212168582U (en) * | 2020-03-26 | 2020-12-18 | 承德承钢工程技术有限公司 | Flattening device for innermost deformed belt head of cold-rolled galvanized steel coil |
| CN111443030A (en) * | 2020-04-03 | 2020-07-24 | 江苏法尔胜缆索有限公司 | Method for testing salt spray corrosion resistance of steel wire in stress state |
| CN212255009U (en) * | 2020-04-03 | 2020-12-29 | 江苏法尔胜缆索有限公司 | Device for testing salt spray corrosion resistance of steel wire in stress state |
| CN211991925U (en) * | 2020-04-30 | 2020-11-24 | 浙江铭博汽车部件股份有限公司 | Clamping mechanism for adjusting mounting block |
| CN213004826U (en) * | 2020-07-14 | 2021-04-20 | 苏州九四四九智能科技有限公司 | Steel wire clamp |
| CN112649352A (en) * | 2020-12-24 | 2021-04-13 | 江苏东纲金属制品有限公司 | Device and method for testing salt spray corrosion resistance of steel wire in bending and stretching state |
| CN215004566U (en) * | 2021-02-04 | 2021-12-03 | 山东华岳勘察测绘有限公司 | Engineering reconnaissance geotechnical sample segmentation ware |
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| Publication number | Publication date |
|---|---|
| CN114905442B (en) | 2024-01-30 |
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