CN212621833U - Composite cross arm structure test device - Google Patents
Composite cross arm structure test device Download PDFInfo
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- CN212621833U CN212621833U CN202020289550.0U CN202020289550U CN212621833U CN 212621833 U CN212621833 U CN 212621833U CN 202020289550 U CN202020289550 U CN 202020289550U CN 212621833 U CN212621833 U CN 212621833U
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- 239000002131 composite material Substances 0.000 title claims abstract description 86
- 238000012360 testing method Methods 0.000 title claims abstract description 44
- 150000001875 compounds Chemical class 0.000 claims abstract description 22
- 238000006243 chemical reaction Methods 0.000 claims description 28
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 10
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000003825 pressing Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000003416 augmentation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000012029 structural testing Methods 0.000 description 1
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Abstract
The utility model discloses a compound cross arm structure test device, include: the device comprises a first counter-force wall, a second counter-force wall, a composite cross arm, a force application piece, a load device and a hydraulic device, wherein the first counter-force wall and the second counter-force wall are arranged in parallel, the load device is used for applying vertical force to the composite cross arm, and the hydraulic device is used for applying axial load to the composite cross arm; the composite cross arm is a pyramid-shaped composite cross arm or a single-column-shaped composite cross arm; one end of the composite cross arm is fixed on the first counter-force wall, the other end of the composite cross arm is connected with the hydraulic device through the force applying part, the load device is hung on the force applying part, the hydraulic device is fixed on the second counter-force wall, a mechanical test device suitable for a pyramid-shaped composite cross arm and single-column type composite cross arm structure test can be provided, and the mechanical test device has the advantages of being simple in structure and high in practicability.
Description
Technical Field
The utility model relates to a mechanical test technical field especially relates to a compound cross arm structure test device.
Background
The traditional cross arm mechanical test device is mainly a structure test device aiming at a cross arm made of angle steel materials, a novel composite cross arm appearing in recent years has the tendency of replacing the original angle steel cross arm, the composite material has the characteristics of high strength, light weight, corrosion resistance, good durability and electrical insulation performance and the like, and is very suitable for manufacturing the cross arm, so that the composite cross arm is likely to become an important direction for the development of the power transmission line industry in the future. Therefore, a composite cross arm mechanical test device is urgently needed.
Disclosure of Invention
The utility model provides a purpose provides a compound cross arm structure test device can provide the mechanical test device that is applicable to pyramid compound cross arm, the compound cross arm structure of single-column type is experimental, has simple structure, characteristics that the practicality is strong.
In order to achieve the above object, an embodiment of the present invention provides a composite cross arm structure testing apparatus, including: the device comprises a first counter-force wall, a second counter-force wall, a composite cross arm, a force application piece, a load device and a hydraulic device, wherein the first counter-force wall and the second counter-force wall are arranged in parallel, the load device is used for applying vertical force to the composite cross arm, and the hydraulic device is used for applying axial load to the composite cross arm; the composite cross arm is a pyramid-shaped composite cross arm or a single-column-shaped composite cross arm;
one end of the composite cross arm is fixed on the first reaction wall, the other end of the composite cross arm is connected with the hydraulic device through the force application piece, the load device is hung on the force application piece, and the hydraulic device is fixed on the second reaction wall.
As an improvement of the above scheme, the test device further comprises two support frames;
the support frame is fixed on the ground and is used for supporting the first reaction wall and the second reaction wall respectively.
As an improvement of the above scheme, the hydraulic device comprises a hydraulic cylinder, a guide rail and a guide rail connecting piece which is vertical to the guide rail;
one end of the hydraulic cylinder is connected with the stress application part, and the other end of the hydraulic cylinder is arranged on the guide rail connecting part;
the guide rail is vertically arranged on the second counter-force wall, and the guide rail connecting piece is movably fixed on the guide rail.
As an improvement of the above scheme, the test device further comprises an elongated member;
one end of the lengthening piece is connected with the hydraulic cylinder, and the other end of the lengthening piece is installed on the guide rail connecting piece.
As a modification of the above, the force applying member has a first connecting portion for connecting with the composite cross arm, a second connecting portion for connecting with the hydraulic device, a third connecting portion for suspending the load device, and a fourth connecting portion;
the third connecting part is arranged on the lower surface of the force application part, and the fourth connecting part is arranged on the upper surface of the force application part.
As an improvement of the above scheme, the test device further comprises at least two first fixing pieces and at least two second fixing pieces;
the first fixing piece and the second fixing piece are both mounted on the first reaction wall.
As an improvement of the scheme, the pyramid-shaped composite cross arm is composed of at least two pressure rods and at least two pull rods;
the pull rod, the force applying piece and the hydraulic cylinder are in the same axial direction;
one end of the pull rod is fixed on the first reaction wall through the second fixing piece, and the other end of the pull rod is connected with the first connecting part;
one end of the pressure lever is fixed on the first reaction wall through the first fixing piece, and the other end of the pressure lever is connected with the fourth connecting part.
As an improvement of the scheme, the hydraulic cylinder is a double-acting hydraulic cylinder.
As an improvement of the scheme, a force sensor for measuring the axial load is arranged on the hydraulic device.
As an improvement of the scheme, the loading device is a weight box.
Compared with the prior art, the embodiment of the utility model discloses a compound cross arm structure test device has following beneficial effect:
the composite cross arm is connected with the load device and the hydraulic device which are used for applying load to the composite cross arm through the arrangement of the force applying part, then the load device is arranged, force in the vertical direction is applied to the composite cross arm, the hydraulic device is arranged, the axial load is kept applied to the composite cross arm, the load applied to the composite cross arm is obtained through the load device and the hydraulic device, the stress condition of the composite cross arm in actual engineering is effectively simulated, and the mechanical property of the composite cross arm is judged. The utility model provides a mechanical test device suitable for compound cross arm of pyramid, the compound cross arm structural test of single-column type can effectively solve compound cross arm axial force and the loaded problem of moment of flexure coordination, has simple structure, the practicality is strong and characteristics that the utilization ratio is high.
Drawings
Fig. 1 is a schematic structural diagram of a pyramidal composite cross arm structure testing device in an embodiment of the present invention;
fig. 2 is a schematic diagram of a specific structure of a hydraulic device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a single-column composite cross arm structure testing device in an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, it is a schematic structural diagram of a pyramidal composite cross arm structure testing apparatus in an embodiment of the present invention, including: the device comprises a first reaction wall 11 and a second reaction wall 12 which are arranged in parallel, a composite cross arm 3, a force application piece 4, a load device 5 for applying vertical force to the composite cross arm and a hydraulic device 6 for applying axial load to the composite cross arm; the composite cross arm 3 is a pyramid-shaped composite cross arm or a single-column-shaped composite cross arm;
one end of the composite cross arm 3 is fixed on the first reaction wall 11, the other end of the composite cross arm 3 is connected with the hydraulic device 6 through the force applying piece 4, the load device 5 is hung on the force applying piece 4, and the hydraulic device 6 is fixed on the second reaction wall 12.
In this embodiment, the load device 5 is provided, so that a vertical force is applied to the composite cross arm 3. Illustratively, the loading device 5 may be a weight box, and the control of the force of the composite cross arm 3 in the vertical direction is realized by adding or subtracting weights in the weight box, so as to obtain the force in the vertical direction through weight registration stacking. By providing the hydraulic means 6, it is maintained that an axial load, also understood as a horizontal load, is applied to the composite cross arm 3. Further, by providing the biasing member 4, the composite cross arm 3 is connected to the loading device 5 and the hydraulic device 6 for applying a load to the composite cross arm.
Preferably, a force sensor for measuring the axial load is mounted on the hydraulic device 6. By arranging the force sensor, the axial force applied to the composite cross arm is measured.
Preferably, the test device further comprises two support frames 2; the support frame 2 is fixed to the ground and supports the first reaction wall 11 and the second reaction wall 12, respectively.
In a preferred embodiment, referring to fig. 2, which is a specific structural schematic diagram of a hydraulic device in an embodiment of the present invention, the hydraulic device 6 includes a hydraulic cylinder 61, a guide rail 62, and a guide rail connecting member 63 perpendicular to the guide rail; one end of the hydraulic cylinder 61 is connected with the force application part 4, and the other end of the hydraulic cylinder 61 is installed on the guide rail connecting part 63; the guide rail 62 is vertically installed on the second reaction wall 12, and the guide rail connecting member 63 is movably fixed to the guide rail 62.
In this embodiment, the hydraulic cylinder 61 moves up and down along the guide rail through the guide rail connecting member 63 to be suitable for deformation of the composite cross arm 3, and it is ensured that a load in the horizontal direction is always applied to the composite cross arm 3. Preferably, pneumatic cylinder 61 can be double-acting pneumatic cylinder, realizes exerting pulling force and pressure to compound cross arm 3, and inside is equipped with the real-time collection system of oil pressure, can gather the oil pressure value in real time to in obtaining axial load data.
In a preferred embodiment, the composite cross arm 3 is preferably a single-column composite cross arm, see fig. 3, which is a schematic structural diagram of a single-column composite cross arm structural testing apparatus in an embodiment of the present invention, one end of the composite cross arm 3 is directly fixed on the first reaction wall 11, the other end of the composite cross arm 3 is connected with the hydraulic device 6 through the force applying part 4, the loading device 5 is suspended on the force applying part 4, and the hydraulic device 6 is fixed on the second reaction wall 12. The utility model provides a mechanical test device suitable for single-column type composite cross arm structural test is applicable to the structural test research of single-column type combined material cross arm, has simple structure, characteristics that the practicality is strong.
Preferably, referring to fig. 3, the testing apparatus further includes an elongated member 7, one end of the elongated member 7 is connected to the hydraulic cylinder 61, and the other end of the elongated member 7 is mounted on the rail connecting member 63.
Preferably, referring to fig. 1, the thrust augmentation member 4 has a first connection portion 41 for connecting with the composite cross arm 3, a second connection portion 42 for connecting with the hydraulic device 6, a third connection portion 43 for suspending the load device 5, and a fourth connection portion 44; the third connecting portion 43 is disposed on the lower surface of the force applying member 4, and the fourth connecting portion 44 is disposed on the upper surface of the force applying member 4.
Preferably, referring to fig. 1, the testing device further comprises at least two first fixing members 81 and at least two second fixing members 82;
the first fixing member 81 and the second fixing member 82 are both attached to the first reaction wall 11.
In another preferred embodiment, the composite cross arm 3 is preferably a pyramid composite cross arm, which is composed of at least two pressing rods 31 and at least two pulling rods 32, see fig. 1; the pull rod 32, the force applying part 4 and the hydraulic cylinder 61 are in the same axial direction; one end of the pull rod 32 is fixed to the first reaction wall 11 by the second fixing member 82, and the other end of the pull rod 32 is connected to the first connecting portion 41; one end of the pressure lever 31 is fixed 81 to the first reaction wall 11 by the first fixing member, and the other end of the pressure lever 31 is connected to the fourth connecting portion 44.
For example, referring to fig. 1, two pressure rods 31 and two pull rods 32 are provided, two corresponding first fixing members 81 and two corresponding second fixing members 82 are provided, and the first fixing member 81 is disposed above the second fixing member 82. One end of each of the two pressing rods 31 is fixed to the first reaction wall 11 through a first fixing member 81, and the other end of each of the two pressing rods 31 is connected to the fourth connecting portion 44 of the force applying member 4. One end of each of the two pull rods 32 is fixed to the first reaction wall 11 through the second fixing member 82, and the two pull rods 32 and the hydraulic cylinder 61 are arranged in the same axial direction, so that the two pull rods keep only axial force application, and the other end of each of the two pull rods 32 is connected to the first connecting portion 41 of the force application member 4.
The test principle of the composite cross arm structure test device is as follows:
the method comprises the steps of obtaining strain data of a preset strain gauge measuring point on a composite cross arm, obtaining deformation and displacement of the composite cross arm in a load loading process, obtaining load data applied to the composite cross arm through a load device and a hydraulic device, further obtaining a cross arm pull rod load-strain diagram, a cross arm compression rod load-strain diagram and a wire hanging point load-displacement diagram according to the deformation data, the displacement data, the load data and the strain data, and further judging the mechanical property of the composite cross arm according to the load, strain and displacement relation diagram.
The embodiment of the utility model provides a pair of compound cross arm structure test device, through setting up afterburning piece, connect compound cross arm and be used for applying load device, the hydraulic means of load to compound cross arm, and then through setting up load device for apply the power of vertical direction to compound cross arm, through setting up hydraulic means, keep applying axial load to compound cross arm, thereby acquire through load device and hydraulic means and apply load on the compound cross arm simulates the compound cross arm atress situation in the actual engineering effectively, realizes judging the mechanical properties of compound cross arm. The utility model provides a mechanical test device suitable for compound cross arm of pyramid, the compound cross arm structural test of single-column type can effectively solve compound cross arm axial force and the loaded problem of moment of flexure coordination, has simple structure, the practicality is strong and characteristics that the utilization ratio is high.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.
Claims (10)
1. The utility model provides a compound cross arm structure test device which characterized in that includes: the device comprises a first counter-force wall, a second counter-force wall, a composite cross arm, a force application piece, a load device and a hydraulic device, wherein the first counter-force wall and the second counter-force wall are arranged in parallel, the load device is used for applying vertical force to the composite cross arm, and the hydraulic device is used for applying axial load to the composite cross arm; the composite cross arm is a pyramid-shaped composite cross arm or a single-column-shaped composite cross arm;
one end of the composite cross arm is fixed on the first reaction wall, the other end of the composite cross arm is connected with the hydraulic device through the force application piece, the load device is hung on the force application piece, and the hydraulic device is fixed on the second reaction wall.
2. The composite cross arm structure testing apparatus of claim 1, further comprising two support brackets;
the support frame is fixed on the ground and is used for supporting the first reaction wall and the second reaction wall respectively.
3. The composite cross arm structure testing device of claim 2, wherein the hydraulic device comprises a hydraulic cylinder, a guide rail and a guide rail connecting piece perpendicular to the guide rail;
one end of the hydraulic cylinder is connected with the stress application part, and the other end of the hydraulic cylinder is arranged on the guide rail connecting part;
the guide rail is vertically arranged on the second counter-force wall, and the guide rail connecting piece is movably fixed on the guide rail.
4. The composite cross arm structure testing apparatus of claim 3, further comprising an extension;
one end of the lengthening piece is connected with the hydraulic cylinder, and the other end of the lengthening piece is installed on the guide rail connecting piece.
5. The composite cross arm structure testing device of claim 3, wherein the force applying member has a first connecting portion for connecting with the composite cross arm, a second connecting portion for connecting with the hydraulic device, a third connecting portion for suspending the load device, and a fourth connecting portion;
the third connecting part is arranged on the lower surface of the force application part, and the fourth connecting part is arranged on the upper surface of the force application part.
6. The composite cross arm structure testing apparatus of claim 5, further comprising at least two first fasteners and at least two second fasteners;
the first fixing piece and the second fixing piece are both mounted on the first reaction wall.
7. The composite cross arm structure testing apparatus of claim 6, wherein the pyramid composite cross arm is comprised of at least two compression bars and at least two tension bars;
the pull rod, the force applying piece and the hydraulic cylinder are in the same axial direction;
one end of the pull rod is fixed on the first reaction wall through the second fixing piece, and the other end of the pull rod is connected with the first connecting part;
one end of the pressure lever is fixed on the first reaction wall through the first fixing piece, and the other end of the pressure lever is connected with the fourth connecting part.
8. A composite cross arm structure testing apparatus according to claim 3, wherein said hydraulic cylinder is a double acting hydraulic cylinder.
9. The composite cross arm structure testing apparatus of claim 1, wherein a force sensor for measuring an axial load is mounted on the hydraulic device.
10. The composite cross arm structure test device of claim 1, wherein the loading device is a weight cage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020289550.0U CN212621833U (en) | 2020-03-10 | 2020-03-10 | Composite cross arm structure test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020289550.0U CN212621833U (en) | 2020-03-10 | 2020-03-10 | Composite cross arm structure test device |
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| Publication Number | Publication Date |
|---|---|
| CN212621833U true CN212621833U (en) | 2021-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020289550.0U Active CN212621833U (en) | 2020-03-10 | 2020-03-10 | Composite cross arm structure test device |
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| Country | Link |
|---|---|
| CN (1) | CN212621833U (en) |
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2020
- 2020-03-10 CN CN202020289550.0U patent/CN212621833U/en active Active
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