CN210269146U - Novel connecting hardware fitting of test article for mandrel swing fatigue test - Google Patents
Novel connecting hardware fitting of test article for mandrel swing fatigue test Download PDFInfo
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- CN210269146U CN210269146U CN201921559309.9U CN201921559309U CN210269146U CN 210269146 U CN210269146 U CN 210269146U CN 201921559309 U CN201921559309 U CN 201921559309U CN 210269146 U CN210269146 U CN 210269146U
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- mandrel
- fitting
- core rod
- link fitting
- fatigue test
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Abstract
The utility model discloses a novel link fitting of core rod swing fatigue test sample. The utility model provides a novel link fitting of sample for mandrel sways fatigue test, includes the last link fitting and the lower link fitting that are used for installing the mandrel, wherein, still includes top board and holding down plate, the top board is passed through to mandrel one end, the bolt fastening is on last link fitting, and, the mandrel other end passes through holding down plate, the bolt fastening is on link fitting down. The utility model has the advantages of need not crimping, low and the accuracy height of testing cost.
Description
Technical Field
The utility model relates to a plug test technical field especially relates to a novel link fitting of sample for fatigue test is swayd to plug.
Background
The epoxy glass fiber drawing rod (hereinafter referred to as core rod) for the composite insulator is a widely used electrical material, plays a role in insulation and bearing mechanical tensile load in electrical products, and is the most main material used for high-voltage composite insulators. The core rod plays a role in internal insulation and mechanical load bearing in a high-voltage composite insulator product, so the core rod is also an important component of the high-voltage composite insulator. The electrical industry standard DL/T.1580-2016 has an important technical index for the core rod, namely: and (5) carrying out a swinging fatigue test. The purpose of this test item is two:
1) the core rod swinging fatigue test is to examine the bonding strength of glass fiber and epoxy resin of the core rod and the toughness of the core rod through 12-ten-thousand reciprocating swinging fatigue tests of the core rod. This test must be carried out on standard, batch-to-batch, 30-40mm diameter core rods.
2) The hard jumper wire anti-windage yaw composite insulator used on a tension string transmission tower in a coastal region needs to simulate the blowing amplitude of strong typhoon and check the fatigue characteristic under the mechanical reciprocating swing of 12 ten thousand times, and each batch of factory-delivered anti-windage yaw composite insulators need to be subjected to the test.
When the test is performed in the past, the hardware of the windage yaw prevention composite insulator with the corresponding diameter is installed as the connecting hardware by the crimping process for the connection of the two ends of the core rod test article, so that the following disadvantages are caused:
1) the traditional connecting hardware tool needs to adopt a crimping process to crimp the hardware tool and the core rod into a whole. If the control of the crimping process is not good, the core rod is easy to damage, so that the test cannot be passed. It is unreasonable that the performance of the core rod itself cannot be correctly checked due to the influence of external factors.
2) Because a set of connecting hardware fittings with corresponding diameters are required to be installed in each test, the test cost is high, and a lot of difficulties and inconvenience are brought to the test for core rod manufacturers and national laboratory centers because no compression joint equipment and corresponding connecting hardware fittings are arranged.
Therefore, the design of a set of connecting hardware fitting which can be quickly installed and repeatedly used for the test has very important practical significance.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a need not the crimping and the mandrel that test cost is low sways novel link fitting of fatigue test with sample.
In order to achieve the above object, the utility model adopts the following technical scheme:
the utility model provides a pair of novel link fitting of sample for mandrel sway fatigue test, including last link fitting and the lower link fitting that is used for installing the plug, wherein, still include top board and holding down plate, top board, bolt fastening are passed through to plug one end on last link fitting, and, the plug other end passes through holding down plate, bolt fastening under on the link fitting.
Furthermore, a flange plate is arranged at one end of the upper connecting hardware fitting, which is connected with the external testing machine bracket; and the lower connecting hardware fitting is also provided with two raised lugs with connecting holes so as to be connected with an external swinging device through pins.
Furthermore, an upper core rod hole for installing a core rod is formed in the upper connecting hardware fitting, and a lower core rod hole for installing the core rod is formed in the lower connecting hardware fitting; the nominal diameters of the upper and lower mandrel holes are all as large as the nominal diameter of the mandrel, and the minimum limiting diameters of the upper and lower mandrel holes are all larger than the maximum limiting diameter of the mandrel; when the upper pressing plate and the lower pressing plate are not pressed, the upper connecting hardware fitting and the lower connecting hardware fitting are in a movable fit relationship with the upper pressing plate and the lower pressing plate respectively, and otherwise, the upper connecting hardware fitting and the lower connecting hardware fitting are in a tight fit relationship with the upper pressing plate and the lower pressing plate respectively.
Further, the inner bore diameters of the upper and lower mandrel bores have 5 dimensional specifications, which are: phi 28mm, phi 30mm, phi 34mm, phi 38mm and phi 40mm, and the upper core rod hole and the lower core rod hole are respectively matched with the corresponding 5 specifications of core rods.
Due to the adoption of the structure, the utility model discloses the beneficial effect who has as follows:
the utility model provides a pair of mandrel sways novel link fitting of fatigue test with sample, top plate, bolt fastening are passed through to mandrel one end on last link fitting, and, the mandrel other end passes through holding down plate, bolt fastening under on link fitting, thereby the utility model discloses avoided becoming one whole with link fitting and mandrel crimping, and owing to do not need the crimping, avoid the crimping out of control and cause test result inaccurate, guaranteed the accuracy of swaying fatigue test result, and, the utility model discloses the installation is convenient, quick with the dismantlement, can used repeatedly, has practiced thrift the test cost.
The invention will become more apparent from the following description when taken in conjunction with the accompanying drawings which illustrate embodiments of the invention.
Drawings
Fig. 1 is a schematic structural view of the novel connection fitting of the core rod swinging fatigue test sample of the present invention;
FIG. 2 is a cross-sectional view of the A-A surface of the novel connecting hardware fitting of the core rod swinging fatigue test sample of the invention; and the number of the first and second groups,
fig. 3 is a cross-sectional view of the B-B surface of the novel connecting hardware fitting of the core rod swinging fatigue test sample of the utility model.
Detailed Description
Embodiments of the present invention will now be described with reference to the drawings, wherein like element numerals represent like elements throughout.
Referring to fig. 1-3, the utility model provides a novel link fitting of sample for mandrel sway fatigue test, including last link fitting 1 and lower link fitting 2 that is used for installing the plug, wherein, still include top board 12 and holding down plate 22, 3 one end of plug is through top board 12, M12 hexagon socket head cap screw fastening on last link fitting 1 to and 3 other ends of plug pass through holding down plate 22, M12 hexagon socket head cap screw fastening on link fitting 2 down.
In the utility model, a flange 13 is arranged at one end of the upper connecting hardware fitting 1 connected with the external testing machine bracket; the lower connecting hardware fitting 2 is also provided with two raised lugs 20 with connecting holes; the flange plate 13 is matched with an M16 hexagon head bolt to connect the upper connecting hardware fitting 1 with the external testing machine support, and the middle parts of the protruding double lugs 20 are provided with connecting holes connected with external connecting rods, so that the connecting holes are conveniently connected with an external swinging device through pins, and the installation work of the mandrel 3 before the mandrel 3 swinging fatigue test is conveniently completed.
In the utility model, the upper connecting hardware fitting 1 is provided with an upper mandrel hole 11 for installing the mandrel 3, and the lower connecting hardware fitting 2 is provided with a lower mandrel hole 21 for installing the mandrel 3; the nominal diameters of the upper and lower mandrel holes 11, 21 are all as large as the nominal diameter of the mandrel 3, and the minimum limit diameters of the upper and lower mandrel holes 11, 21 are all larger than the maximum limit diameter of the mandrel 3; one end of the mandrel 3 is arranged on the upper mandrel hole 11 and is fastened on the upper connecting fitting 1 through the upper pressing plate 12 and the M12 hexagon socket head cap head bolt, the other end of the mandrel 3 is arranged on the lower mandrel hole 21 and is fastened on the lower connecting fitting 2 through the lower pressing plate 22 and the M12 hexagon socket head cap head bolt, the upper connecting fitting 1 and the lower connecting fitting 2 are in a movable fit relation with the upper pressing plate 12 and the lower pressing plate 22 respectively when the upper pressing plate 12 and the lower pressing plate 22 are not pressed, and on the contrary, the upper connecting fitting 1 and the lower connecting fitting 2 are in a close fit relation with the upper pressing plate 12 and the lower pressing plate 22 respectively.
The utility model discloses in, the hole diameter of going up excellent hole 11 of core and lower excellent hole 21 has 5 kinds of dimensions, is respectively: phi 28mm, phi 30mm, phi 34mm, phi 38mm and phi 40mm, and each set of connecting tool is provided with two upper connecting fittings 1 and two lower connecting fittings 2, so that the upper mandrel hole 11 and the lower mandrel hole 21 are respectively matched with the mandrels 3 with corresponding 5 specifications.
The utility model discloses during the specific use, 3 one ends of plug dress is on last mandrel hole 11 and through top board 12, hexagon head bolt in M12 the plug 3 fastening on last link fitting 1 to and, 3 other end dresses of plug are on mandrel hole 21 down and through holding down plate 22, hexagon head bolt in M12 the plug 3 fastening under link fitting 2, make the utility model discloses a link fitting and plug 3 connect as a whole to, install on the peripheral hardware testing machine support through flange plate 13 last link fitting 1 with M16 hexagon head bolt, and, protruding ears 20 and peripheral hardware sway the device and be connected the installation that can accomplish the preceding plug 3 examination article of rocking fatigue test.
The above description is directed to the preferred embodiment of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that devices and structures not described in detail are understood to be implemented in a manner common in the art; without departing from the scope of the invention, it is intended that the present invention shall not be limited to the above-described embodiments, but that the present invention shall include all the modifications and variations of the embodiments. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention all still fall within the protection scope of the technical solution of the present invention, where the technical entity does not depart from the content of the technical solution of the present invention.
Claims (4)
1. The utility model provides a mandrel sways novel link fitting of fatigue test with sample, includes last link fitting (1) and link fitting (2) down that are used for installing the mandrel, its characterized in that: the connecting device is characterized by further comprising an upper pressing plate (12) and a lower pressing plate (22), wherein one end of the core rod (3) is fastened on the upper connecting fitting (1) through the upper pressing plate (12) and a bolt, and the other end of the core rod (3) is fastened on the lower connecting fitting (2) through the lower pressing plate (22) and the bolt.
2. The novel link fitting of the test article for the mandrel swing fatigue test according to claim 1, characterized in that: a flange plate (13) is arranged at one end of the upper connecting hardware fitting (1) connected with the external testing machine bracket; and the lower connecting hardware fitting (2) is provided with two raised lugs (20) with connecting holes.
3. The novel link fitting of the test article for the mandrel rocking fatigue test according to claim 1 or 2, characterized in that: an upper core rod hole (11) for installing a core rod (3) is formed in the upper connecting hardware fitting (1), and a lower core rod hole (21) for installing the core rod (3) is formed in the lower connecting hardware fitting (2); the nominal diameters of the upper and lower mandrel bores (11, 21) are each as large as the nominal diameter of the mandrel (3), and the minimum limit diameters of the upper and lower mandrel bores (11, 21) are each larger than the maximum limit diameter of the mandrel (3).
4. The novel link fitting of the test article for the mandrel sway fatigue test as set forth in claim 3, characterized in that: the inner hole diameters of the upper core rod hole (11) and the lower core rod hole (21) are 5 kinds of size specifications which are respectively as follows: phi 28mm, phi 30mm, phi 34mm, phi 38mm, phi 40 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921559309.9U CN210269146U (en) | 2019-09-19 | 2019-09-19 | Novel connecting hardware fitting of test article for mandrel swing fatigue test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921559309.9U CN210269146U (en) | 2019-09-19 | 2019-09-19 | Novel connecting hardware fitting of test article for mandrel swing fatigue test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210269146U true CN210269146U (en) | 2020-04-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921559309.9U Active CN210269146U (en) | 2019-09-19 | 2019-09-19 | Novel connecting hardware fitting of test article for mandrel swing fatigue test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210269146U (en) |
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2019
- 2019-09-19 CN CN201921559309.9U patent/CN210269146U/en active Active
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