A test equipment for mechanical tensile strength of suspension insulator cap

Abstract

The present invention relates to the technical field of power grid component testing, and in particular to a test device for the mechanical tensile strength of a suspension insulator cap, comprising a main test bench, a pressure sensor, and a main fixing frame bolted to the upper end of the main test bench. The test device for the mechanical tensile strength of a suspension insulator cap of the present invention drives the top connection block to stretch to both sides by installing electric winches on the main test bench and the main fixing frame respectively, a retractable telescopic assembly block is movably connected inside the top connection block, and a lateral storage groove with a built-in flip limit strut is provided on the outer side of the top connection block, so that the top connection block can be conveniently assembled at both ends of the insulator cap, a fixed pressure sensor is installed inside the inclined limit block of the lateral storage groove, and the pressure value is monitored in real time during pulling, so as to test the tensile strength. The structure of the whole device is simple, the experimental data is intuitive and accurate, and the assembly operation is simple and convenient, and the scope of application is wider.

Description

Technical Field

[0001] The invention relates to the technical field of power grid component testing, in particular to a test device for the mechanical tensile strength of an iron cap of a suspension insulator. Background Art

[0002] The iron cap is an important part of the porcelain insulator used for connecting power grid equipment. The porcelain insulator is an insulation control component used for high-voltage transmission lines and an indispensable component of power transmission and transformation equipment. It plays the role of supporting the conductor and preventing the current from returning to the ground. At present, most of the equipment used to test the iron cap on the market has a complex structure and a single measurement method. In addition, the scope of application of the test iron cap is relatively limited, and the loading and unloading operation of the iron cap is very inconvenient. Summary of the invention

[0003] The technical problem to be solved by the present invention is: in order to solve the problems existing in the above-mentioned background technology, an improved test equipment for the mechanical tensile strength of the iron cap of the suspension insulator is provided to solve the problem that most of the equipment currently used for testing the iron cap on the market has a complex structure, a single measurement method, and a relatively limited scope of application of the testing iron cap, and the loading and unloading operations of the iron cap are very inconvenient.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a test equipment for the mechanical tensile strength of the iron cap of a suspension insulator, comprising a main test bench, a pressure sensor, a main fixing frame bolted to the upper end of the main test bench, a lower electric winch fixed to the inside of the main test bench by bolts, and an upper electric winch fixed to the upper end of the main fixing frame by bolts, the top ends of the pull ropes on the lower electric winch and the upper electric winch are fixedly connected with a top connecting block for connecting the iron cap of the suspension insulator, a lateral storage groove with a built-in flip limit strut is provided on the outer side surface of the top connecting block, a top telescopic blind hole with a built-in telescopic assembly block is provided on the non-connecting top end of the top connecting block, the cross section of the telescopic assembly block is an I-shaped structure, an internal limit groove is provided on the inner side surface of the top telescopic blind hole, and an external sinking groove is provided on the outer opening end of the top telescopic blind hole.

[0005] Furthermore, in order to facilitate the fixed installation of the tensile strength detection device, the inner side of the lateral storage groove is located outside the connecting end of the flip limit support rod and has an integrally structured inclined limit block, and the inner side of the inclined limit block is provided with an inner fixing groove for installing and fixing the pressure sensor.

[0006] Furthermore, in order to improve the stability of the contact end and expand the scope of application, a top adjustment groove with a built-in flip support foot is provided at the top of the flip limit support rod.

[0007] Furthermore, in order to facilitate the connection of the signal transmission line, a wire placement groove connected to the inside of the inner fixing groove is opened on the outer side surface of the top connection block.

[0008] Furthermore, in order to improve the stability of the limiting mechanism, the inner diameter of the internal limiting groove is the same as the inner diameter of the external sinking groove, and there is no gap between the inner side surface of the internal limiting groove and the outer connecting surface of the telescopic assembly block.

[0009] Furthermore, in order to improve the stability of telescopic assembly, there is no gap between the inner side surface of the top telescopic blind hole and the outer connecting surface of the telescopic assembly block.

[0010] The beneficial effect of the present invention is that a test equipment for the mechanical tensile strength of the iron cap of a suspension insulator of the present invention drives the top connecting block to stretch to both sides by installing electric winches on the main experimental table and the main fixed frame respectively, a retractable telescopic assembly block is movably connected inside the top connecting block, and a lateral storage groove with a built-in flip limit strut is opened on the outside of the top connecting block, so that the top connecting block can be conveniently assembled at both ends of the insulator iron cap, a fixed pressure sensor is installed inside the inclined limit block of the lateral storage groove, and the pressure value is monitored in real time during pulling, so as to test the tensile strength, the structure of the whole device is simple, the experimental data is intuitive and accurate, the assembly operation is simple and convenient, and the scope of application is wider. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0012] Figure 1 It is a structural schematic diagram of the present invention.

[0013] Figure 2 It is a cross-sectional view of the interior of the top connecting block in the present invention.

[0014] In the figure: 1. Main test bench, 2. Pressure sensor, 3. Main fixing frame, 4. Lower electric winch, 5. Upper electric winch, 6. Pull rope, 7. Top connecting block, 8. Flip limit support rod, 9. Lateral storage groove, 10. Telescopic assembly block, 11. Top telescopic blind hole, 12. Internal limit groove, 13. External sinking groove, 14. Oblique limit block, 15. Flip support foot, 16. Wire trough. DETAILED DESCRIPTION

[0015] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0016] Figure 1 and Figure 2The test equipment for the mechanical tensile strength of the iron cap of a suspension insulator shown in the figure comprises a main test bench 1, a pressure sensor 2, a main fixing frame 3 bolted to the upper end of the main test bench 1, a lower electric winch 4 bolted to the inside of the main test bench 1 and an upper electric winch 5 bolted to the upper end of the main fixing frame 3, the top ends of the pull ropes 6 on the lower electric winch 4 and the upper electric winch 5 are fixedly connected with a top connecting block 7 for connecting the iron cap of the suspension insulator at the top ends, a lateral receiving groove 9 with a built-in flip limiting strut 8 is provided on the outer side surface of the top connecting block 7, a top telescopic blind hole 11 with a built-in telescopic assembly block 10 is provided on the non-connecting top end of the top connecting block 7, the cross section of the telescopic assembly block 10 is an I-shaped structure, an internal limiting groove 12 is provided on the inner side surface of the top telescopic blind hole 11, and an external sinking groove 13 is provided on the outer opening end of the top telescopic blind hole 11.

[0017] Furthermore, in order to facilitate the fixed installation of the tensile strength detection device, the inner side surface of the lateral receiving groove 9 is located outside the connecting end of the flip limit strut 8 and has an integrally structured inclined limit block 14, and the inner side surface of the inclined limit block 14 is provided with an inner fixing groove for installing and fixing the pressure sensor 2. Furthermore, in order to improve the stability of the contact end and the scope of application, a top adjustment groove with a built-in flip support leg 15 is provided at the top of the flip limit strut 8. The flip support leg 15 is used to contact the inner wall of the insulator iron cap. An internal positioning groove for clamping and fixing the flip support leg 15 is provided on the inner side surface of the lateral receiving groove 9 to prevent the flip limit strut 8 from flipping inwards, and an elastic extrusion sheet can also be installed instead as needed.

[0018] Furthermore, in order to facilitate the connection of signal transmission lines, a wire groove 16 connected to the inner fixing groove is opened on the outer surface of the top connecting block 7. Furthermore, in order to improve the stability of the limiting mechanism, the inner aperture size of the internal limiting groove 12 is the same as the inner aperture size of the external sinking groove 13, and there is no gap between the inner side surface of the internal limiting groove 12 and the outer connecting surface of the telescopic assembly block 10.

[0019] Furthermore, in order to improve the telescopic stability of the assembly, there is no gap between the inner side of the top telescopic blind hole 11 and the outer connecting surface of the telescopic assembly block 10. A test equipment for the mechanical tensile strength of the suspension insulator iron cap of the present invention drives the top connecting block 7 to stretch to both sides by installing electric winches on the main experimental table 1 and the main fixed frame 3 respectively. A telescopic assembly block 10 is movably connected inside the top connecting block 7. A lateral storage groove 9 with a built-in flip limit strut 8 is provided on the outside of the top connecting block 7 to facilitate the assembly of the top connecting block 7 at both ends of the insulator iron cap. A fixed pressure sensor 2 is installed inside the inclined limit block 14 of the lateral storage groove 9 to monitor the pressure value in real time during pulling, thereby testing the tensile strength. The structure of the entire device is simple, the experimental data is intuitive and accurate, the assembly operation is simple and convenient, and the scope of application is wider.

[0020] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A test device for the mechanical tensile strength of a suspension insulator cap, comprising a main test bench (1), a pressure sensor (2), a main fixing frame (3) bolted to the upper end of the main test bench (1), a lower electric winch (4) bolted to the inside of the main test bench (1), and an upper electric winch (5) bolted to the upper end of the main fixing frame (3), wherein: The top ends of the pull ropes (6) on the lower electric winch (4) and the upper electric winch (5) are fixedly connected with a top connection block (7) for connecting the iron cap of the suspension insulator; the outer surface of the top connection block (7) is provided with a lateral storage groove (9) with a built-in flip limit support rod (8); the non-connecting top end of the top connection block (7) is provided with a top telescopic blind hole (11) with a built-in telescopic assembly block (10); the cross section of the telescopic assembly block (10) is an I-shaped structure; the inner side surface of the top telescopic blind hole (11) is provided with an internal limit groove (12); and the outer open end of the top telescopic blind hole (11) is provided with an external sinking groove (13); The top of the flip limit support rod (8) is provided with a top adjustment groove for a built-in flip support foot (15); the inner side of the lateral storage groove (9) is provided with an internal positioning groove for clamping and fixing the flip support foot (15) to prevent the flip limit support rod (8) from flipping inwards; The inner side surface of the lateral storage groove (9) is located outside the connection end of the flip limit support rod (8) and has an integral oblique limit block (14), and the inner side surface of the oblique limit block (14) is provided with an inner fixing groove for installing and fixing the pressure sensor (2).

2. The test equipment for mechanical tensile strength of suspension insulator cap according to claim 1 is characterized by: A wire placement groove (16) communicating with the interior of the inner fixing groove is provided on the outer side surface of the top connecting block (7).

3. The test equipment for mechanical tensile strength of suspension insulator cap according to claim 1 is characterized by: The inner diameter of the internal limiting groove (12) is the same as the inner diameter of the external sinking groove (13), and there is no gap between the inner side surface of the internal limiting groove (12) and the outer connecting surface of the telescopic assembly block (10).

4. The test equipment for mechanical tensile strength of suspension insulator cap according to claim 1 is characterized by: There is no gap between the inner side surface of the top telescopic blind hole (11) and the outer connecting surface of the telescopic assembly block (10).

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