CN114088323A - Device and method for simulating steel strip rigidity test - Google Patents
Device and method for simulating steel strip rigidity test Download PDFInfo
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- CN114088323A CN114088323A CN202111405455.8A CN202111405455A CN114088323A CN 114088323 A CN114088323 A CN 114088323A CN 202111405455 A CN202111405455 A CN 202111405455A CN 114088323 A CN114088323 A CN 114088323A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 168
- 239000010959 steel Substances 0.000 title claims abstract description 168
- 238000012360 testing method Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000005484 gravity Effects 0.000 claims abstract description 60
- 238000009434 installation Methods 0.000 abstract description 12
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000013100 final test Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0041—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress
- G01M5/005—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems
- G01M5/0058—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems of elongated objects, e.g. pipes, masts, towers or railways
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- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The application relates to a device and a method for simulating steel strip rigidity test, wherein the device comprises: a support frame; the steel belt mounting assembly is fixed on the support frame and comprises a base and a steel belt mounting piece fixed on the base; the gravity assembly is positioned above the steel strip mounting assembly and comprises a gravity piece, and the gravity piece freely falls onto the steel strip; the steel strip is installed on the steel strip installation assembly, then the gravity piece freely falls onto the steel strip, whether the rigidity of the steel strip is qualified or not is determined through the deformation of the steel strip, the operation is simple, and manpower resources and operation time are saved.
Description
Technical Field
The application relates to a device and a method for simulating steel belt rigidity test, belonging to the technical field of wires and cables.
Background
The electric wire and cable often need direct burial laying in the use, and in the process of laying, can often drag, take place mechanical collision. In order to protect the structure inside the cable from being damaged due to collision, in the structural design process of the cable, the direct-buried cable needs to be armored by wrapping double-layer steel belts, and then an impact and flattening test is carried out to ensure the reliability of the cable. Due to the particularity of the cable, the length needs to be customized, if the impact and the flattening performance are tested on the finished product, once the impact and the flattening performance are unqualified, the whole cable is scrapped, and the waste is large.
Analysis shows that the impact resistance and the flattening resistance of the cable are directly related to the thickness, the hardness and the rigidity of the steel strip, and the thickness and the hardness of the steel strip used in the standard of the cable are specified and cannot be changed, so that the flattening resistance of the cable can be measured by only controlling the rigidity of the steel strip. There is therefore a need for a device that can test the stiffness of steel strip.
Disclosure of Invention
The application aims to provide a device and a method for simulating steel strip rigidity test, which are used for testing whether the impact resistance and the flattening performance of a cable are qualified.
In order to achieve the purpose, the application provides the following technical scheme:
an apparatus for simulating a steel strip stiffness test, comprising:
a support frame;
the steel belt mounting assembly is fixed on the support frame and comprises a base and a steel belt mounting piece fixed on the base;
and the gravity assembly is positioned above the steel strip mounting assembly and comprises a gravity piece, and the gravity piece freely falls onto the steel strip.
Optionally, the gravity assembly further comprises a connecting member, and the connecting member is respectively connected with the gravity member and the support frame.
Optionally, the gravity piece is a magnetic piece, the connecting piece is a magnetic base, and the magnetic base is magnetically connected with the magnetic piece.
Optionally, the support frame includes outer support body and vertical setting in the slide bar in the outer support body, the magnetic part cover is established outside the slide bar and can move up and down outside the slide bar.
Optionally, the connecting member includes a fixed pulley and a pulley rope wound around the fixed pulley, the fixed pulley is fixed to the support frame, and the pulley rope is connected to the gravity member.
Optionally, the steel belt mounting member is a cylindrical structure, and the steel belt mounting member is horizontally mounted on the base.
Optionally, the steel strip mounting part is provided with an accommodating space for accommodating the steel strip, the inner wall of the accommodating space is provided with an inward-concave thread groove, and the steel strip is located in the thread groove.
Optionally, the top of the steel strip mounting piece is provided with an opening, and the gravity piece falls on the steel strip through the opening.
Optionally, the steel belt mounting piece is provided with a locking part, and the locking part spirally winds the steel belt outside the steel belt mounting piece.
The application also provides a method for simulating the rigidity test of the steel strip, which is used in the device for simulating the rigidity test of the steel strip, and the method comprises the following steps:
s1, mounting the steel strip on the steel strip mounting component;
s2, freely dropping the gravity piece onto the steel strip to make the stressed part of the steel strip concave and deform;
and S3, calculating the rigidity of the steel strip according to the deformation of the stress part of the steel strip.
The beneficial effect of this application lies in: the device comprises a support frame, a steel belt mounting component and a gravity component, wherein the steel belt mounting component and the gravity component are fixed on the support frame; the steel belt is installed on the steel belt installation assembly, then the gravity piece freely falls onto the steel belt, whether the rigidity of the steel belt is qualified or not is determined through the deformation of the steel belt, the operation is simple, and the manpower resources and the operation time are saved.
The foregoing description is only an overview of the technical solutions of the present application, and in order to make the technical solutions of the present application more clear and clear, and to implement the technical solutions according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present application and the accompanying drawings.
Drawings
FIG. 1 is a schematic structural diagram of an apparatus for simulating a steel strip rigidity test according to an embodiment of the present disclosure
FIG. 2 is a schematic structural view of a thread groove and a retaining portion according to an embodiment of the present application;
FIG. 3 is a schematic structural diagram of an apparatus for simulating a steel strip rigidity test according to an embodiment of the present disclosure;
fig. 4 is a flowchart of a method for simulating a steel strip rigidity test according to an embodiment of the present disclosure.
100-a device for simulating steel strip rigidity test, 1-a support frame, 11-an outer frame body, 111-side rods, 112-top rods, 113-bottom rods, 114-sliding rods, 2-a steel strip installation component, 21-a base, 22-a steel strip installation component, 221-an accommodation space, 222-an opening, 223-a locking part, 224-a thread groove, 225-a clamping part, 3-a gravity component, 31-a gravity component, 32-a connecting piece, 321-a fixed pulley, 322-a pulley rope and 200-a steel strip.
Detailed Description
The following detailed description of embodiments of the present application will be described in conjunction with the accompanying drawings and examples. The following examples are intended to illustrate the present application but are not intended to limit the scope of the present application.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the scope of the present application. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention of the present application, the meaning of "a plurality" is two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art through specific situations.
Referring to fig. 1 and 3, a preferred embodiment of the present application provides an apparatus 100 for simulating a steel strip rigidity test, the apparatus 100 comprising: the device comprises a support frame 1, and a steel belt mounting component 2 and a gravity component 3 which are fixed on the support frame 1. The steel strip mounting assembly 2 is used to secure the steel strip 200 to the support frame 1 for subsequent testing operations. Specifically, the steel belt mounting assembly 2 includes a base 21 and a steel belt mounting member 22 fixed to the base 21. Gravity assembly 3 is located above steel strip mounting assembly 2 and includes gravity member 31, and gravity member 31 freely falls onto steel strip 200 for providing downward gravity to steel strip 200 on steel strip mounting assembly 2.
The support frame 1 comprises an outer frame body 11. In this embodiment, the outer frame 11 is composed of two vertically disposed side rods 111, a horizontally disposed top rod 112 and a horizontally disposed bottom rod 113, and the base 21 is fixed on the bottom rod 113.
The gravity assembly 3 further comprises a connecting member 32, and the connecting member 32 is respectively connected with the gravity member 31 and the support frame 1. The connector 32 is located at the lower end of the ram 112.
The weight member 31 is an object having a certain weight. In the present embodiment, the gravity member 31 is a magnetic member, such as a weight. Of course, in other embodiments, the gravity member 31 may be other, for example, a wood block with a higher density, and the application does not limit the type of the gravity member 31.
In one example, when the gravity member 31 is a magnetic member, in order to facilitate the connection and disconnection of the gravity member 31 and the connection member 32, so that the apparatus 100 can be reused, the connection member 32 is provided as a magnetic base which is magnetically connected with the magnetic member. When the test is started, the connection between the magnetic base and the magnetic member is broken, so that the magnetic member is freely dropped onto the steel strip 200. It should be noted that, since the structure and function of the magnetic base are the prior art, the present application is not described herein in detail.
In another example, when the gravity member 31 is a magnetic member, in order to facilitate the connection and disconnection of the gravity member 31 and the connection member 32, so that the apparatus 100 can be reused, the connection member 32 further includes a fixed pulley 321 and a pulley rope 322 wound around the fixed pulley 321, the fixed pulley 321 is fixed on the support frame 1, and the pulley rope 322 is connected to the gravity member 31. When the test is started, the connection between the pulley rope 322 and the weight member 31 is broken, so that the weight member 31 freely falls onto the steel strip 200.
In this embodiment, the weight 31 is installed 1m above the steel strip installation 22 before the test starts. Of course, in other embodiments, the vertical distance between the gravity member 31 and the steel belt mounting member 22 may be specifically set according to the actual situation, and the application does not limit the vertical distance between the gravity member 31 and the steel belt mounting member 22.
Steel band installed part 22 is cylindrical structure, and horizontal installation on base 21, so set up, and simulation steel band 200 that can be accurate is around the scene of package outside the cable.
In one example, the steel strip installation member 22 is a hollow structure, and has an accommodating space 221 for accommodating the steel strip 200 inside, as shown in fig. 2, an inner wall of the accommodating space 221 has an inwardly recessed thread groove 224, the steel strip 200 is located in the thread groove 224, a gap width of the thread groove 224 is 50% of a bandwidth of the steel strip 200, and a catch 225 is provided at a notch of the thread groove 224, the catch 225 is a shielding block for shielding at least a part of the notch, so that the steel strip 200 is always located in the thread groove 224. By such arrangement, it is ensured that the steel strip 200 does not move randomly in the accommodating space 221 due to the external force applied by the gravity piece 31 during the test, thereby affecting the final test result.
Since the steel strip 200 is completely positioned in the steel strip mounting member 22 after being mounted, the gravity member 31 cannot fall on the steel strip 200, and the test cannot be completed. To solve this problem, the steel strip installation member 22 has an opening 222 at the top, and the gravity member 31 is dropped on the steel strip 200 through the opening 222.
In the actual test process, the gravity piece 31 is inevitably influenced by other external forces when falling, so that the gravity piece 31 deviates from the original falling position and cannot normally fall onto the steel strip 200. In order to solve this problem, a sliding rod 114 is vertically disposed in the outer frame 11, and the magnetic member is sleeved outside the sliding rod 114 and can move up and down outside the sliding rod 114. The sliding rod 114 is connected to the top rod 112 and the bottom rod 113, and the sliding rod 114 is inserted into the accommodating space 221 from the opening 222, so that the magnetic member can always fall onto the steel strip 200.
The sliding rod 114 is also provided with scales, so that a tester can more conveniently obtain the deformation of the steel strip 200, and the rigidity of the steel strip 200 can be judged in the following process. Illustratively, the weight member 31 is placed 1m above the steel strip installation member 22, the weight member 31 has a start position and an end position, the start position is a position when the weight member 31 is connected to the connecting member 32, the end position is a position where the weight member 31 falls on the steel strip 200, the scale of the top end of the weight member 31 when it is located at the start position is set to 0m, and the scale position of the top end of the steel strip installation member 22 is set to 1 m.
Of course, the method of obtaining the deformation of the steel strip 200 may be other, such as direct measurement using a ruler.
In another example, where the steel strip mount 22 is a sample bar structure, the steel strip 200 is helically wound around the steel strip mount 22 of the sample bar structure and the steel strip 200 is wound with a gap of 50% of the width of the steel strip 200. Further, in order to improve the connection strength between the steel belt 200 and the steel belt fixture 22 of the sample rod structure, the steel belt fixture 22 is provided with a locking portion 223, and the locking portion 223 fixes the steel belt 200 spirally outside the steel belt fixture 22. Alternatively, the locking portions 223 may be fastening bolts, and correspondingly, both ends of the steel band 200 are provided with screw holes (not shown), and the fastening bolts are inserted through the screw holes to fix the steel band 200 to the steel band mounting member 22.
Referring to fig. 4, fig. 4 is a flowchart of a method for simulating a steel strip rigidity test, which is provided in an embodiment of the present application and is used in the apparatus for simulating a steel strip rigidity test. As shown, the method includes: s1, mounting the steel strip on the steel strip mounting assembly; s2, the gravity piece freely falls onto the steel strip so as to enable the stressed part of the steel strip to be concave and deformed; and S3, calculating the rigidity of the steel strip according to the deformation of the stress part of the steel strip.
Optionally, the mass of the gravity piece may be specifically set according to actual requirements. The actual requirements can be the application scene of the cable, the type of the cable and the stress condition of the cable, and the impact resistance and the crush resistance of different application scenes and different types of cables are different.
Step S3 specifically includes: determining the deformation of the stressed part of the steel belt; substituting the deformation into a formula k which is P/delta, and calculating the rigidity of the steel strip, wherein k is the rigidity of the steel strip, P is a constant force acting on an object, in the embodiment, P is the gravity of a gravity piece, and delta is the deformation of the steel strip; and judging whether the steel belt is qualified or not according to the rigidity of the current steel belt.
In the following description, the gravity member is installed 1m above the steel strip installation member, and the scale when the gravity member is located at the start position is 0m, the scale when the gravity member is located at the end position is Xm, and the steel strip deformation amount δ is X-1.
Further, because the standard rigidity of the steel belts used by different types of cables is different, the rigidity of the current steel belt is only required to be greater than the standard rigidity, and then the rigidity of the current steel belt is qualified. For example, the requirement of the power cable on the rigidity of the steel strip is 12, and as long as the rigidity of the steel strip is greater than 12, the rigidity of the steel strip is qualified currently.
In step S2, when the gravity member falls onto the steel strip, there may be a case where the force-receiving portion of the steel strip does not deform concavely, and at this time, the rigidity of the steel strip is qualified.
The beneficial effect of this application lies in: the device comprises a support frame, a steel belt mounting assembly and a gravity assembly, wherein the steel belt mounting assembly and the gravity assembly are fixed on the support frame; the steel belt is installed on the steel belt installation assembly, then the gravity piece freely falls onto the steel belt, whether the rigidity of the steel belt is qualified or not is determined through the deformation of the steel belt, the operation is simple, and the manpower resources and the operation time are saved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. An apparatus for simulating a steel strip rigidity test, comprising:
a support frame;
the steel belt mounting assembly is fixed on the support frame and comprises a base and a steel belt mounting piece fixed on the base;
and the gravity assembly is positioned above the steel strip mounting assembly and comprises a gravity piece, and the gravity piece freely falls onto the steel strip.
2. The apparatus for simulating a steel strip rigidity test according to claim 1, wherein the gravity assembly further comprises a connecting member, and the connecting member connects the gravity member and the supporting frame, respectively.
3. The device for simulating the rigidity test of the steel strip as claimed in claim 2, wherein the gravity member is a magnetic member, and the connecting member is a magnetic base, and the magnetic base is magnetically connected with the magnetic member.
4. The device for simulating the rigidity test of the steel strip as claimed in claim 3, wherein the supporting frame comprises an outer frame body and a sliding rod vertically arranged in the outer frame body, and the magnetic member is sleeved outside the sliding rod and can move up and down outside the sliding rod.
5. The device for simulating the rigidity test of the steel strip according to claim 2, wherein the connecting member comprises a fixed pulley and a pulley rope wound on the fixed pulley, the fixed pulley is fixed on the supporting frame, and the pulley rope is connected with the gravity member.
6. An apparatus for simulating a steel strip rigidity test as set forth in claim 1, wherein the steel strip mounting member is a cylindrical structure, and the steel strip mounting member is horizontally mounted on the base.
7. The device for simulating the rigidity test of the steel strip as claimed in claim 6, wherein the steel strip mounting member has a holding space for holding the steel strip, the inner wall of the holding space has an inwardly recessed thread groove, and the steel strip is located in the thread groove.
8. The apparatus for simulating the steel strip rigidity test according to claim 7, wherein the steel strip mounting member has an opening at the top, and the gravity member falls on the steel strip through the opening.
9. The apparatus for simulating a steel strip rigidity test according to claim 6, wherein the steel strip mounting member is provided with a locking portion, and the locking portion spirally winds the steel strip outside the steel strip mounting member.
10. A method for testing rigidity of a simulated steel strip, which is used in the device for testing rigidity of a simulated steel strip according to any one of claims 1 to 9, and which comprises the following steps:
s1, mounting the steel strip on the steel strip mounting assembly;
s2, freely dropping the gravity piece onto the steel strip to make the stressed part of the steel strip concave and deform;
and S3, calculating the rigidity of the steel strip according to the deformation of the stress part of the steel strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111405455.8A CN114088323A (en) | 2021-11-24 | 2021-11-24 | Device and method for simulating steel strip rigidity test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111405455.8A CN114088323A (en) | 2021-11-24 | 2021-11-24 | Device and method for simulating steel strip rigidity test |
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| CN114088323A true CN114088323A (en) | 2022-02-25 |
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| CN202111405455.8A Pending CN114088323A (en) | 2021-11-24 | 2021-11-24 | Device and method for simulating steel strip rigidity test |
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| CN103424238A (en) * | 2012-05-22 | 2013-12-04 | 海洋王照明科技股份有限公司 | Impact test device |
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| CN205483481U (en) * | 2016-03-21 | 2016-08-17 | 赵玉朋 | Interlocking armoured cable impact resistance test machine |
| CN106370382A (en) * | 2016-11-09 | 2017-02-01 | 中国电力科学研究院 | Aluminium alloy band interlocking armoured electric cable impact property test device and method |
| CN209233127U (en) * | 2018-11-20 | 2019-08-09 | 沈阳兴华航空电器有限责任公司 | A kind of armored cable encapsulating stationary fixture |
| CN210682756U (en) * | 2019-07-10 | 2020-06-05 | 江苏安诚电缆有限公司 | Cable collecting device |
| CN213633043U (en) * | 2020-11-23 | 2021-07-06 | 天津市管道工程集团有限公司 | Pipeline welding seam protection shield wearability testing arrangement |
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2021
- 2021-11-24 CN CN202111405455.8A patent/CN114088323A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103424238A (en) * | 2012-05-22 | 2013-12-04 | 海洋王照明科技股份有限公司 | Impact test device |
| CN103411842A (en) * | 2013-08-02 | 2013-11-27 | 刘烨 | Industrial steel strip performance testing device |
| CN203561488U (en) * | 2013-10-17 | 2014-04-23 | 日照中大健身器材有限公司 | Gravity impact tester |
| CN203732234U (en) * | 2014-01-16 | 2014-07-23 | 海洋化工研究院有限公司 | Drop-hammer impact testing machine of coating sheet material |
| CN205483481U (en) * | 2016-03-21 | 2016-08-17 | 赵玉朋 | Interlocking armoured cable impact resistance test machine |
| CN106370382A (en) * | 2016-11-09 | 2017-02-01 | 中国电力科学研究院 | Aluminium alloy band interlocking armoured electric cable impact property test device and method |
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