High-voltage line porcelain insulator bending resistance test tool

Abstract

The utility model discloses a high-voltage line porcelain insulator bending resistance test tool, which relates to the technical field of porcelain insulator bending resistance tests and specifically comprises a frame body and an elastic rod which are connected with a tensile machine, an upper pressing seat and a lower pressing seat are stacked together, one end of the upper pressing seat is rotatably connected with one end of the lower pressing seat, and the lower pressing seat is mounted at the tail end of the frame body. Arc-shaped clamping grooves are formed in the opposite surfaces of the upper pressing base and the lower pressing base, and the tail end of the upper pressing base is connected with the tail end of the lower pressing base through a lock catch. When in use, the porcelain insulator is sleeved on the elastic rod, then the elastic rod is placed on the lower pressing seat and then is pressed and fixed by the upper pressing seat, and the elastic rod is fixed by the upper pressing seat and the lower pressing seat in a clamping manner, so that not only can the supporting strength requirement of an experiment be met, but also the elastic rod is convenient to mount and dismount, and the working efficiency is improved. And compared with a bolt fastening mode, the fastening mode is remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of porcelain bottle bending resistance test, in particular to a bending resistance test tooling for high-voltage line porcelain bottles. Background Technique

[0002] Post insulators are a common type of insulator in rural power lines, called post insulators, commonly known as post porcelain bottles. When the porcelain bottles are hoisted on high-voltage lines, they need to have a certain bending resistance. Therefore, during production, each batch of porcelain bottles must provide a bending resistance performance test report. The bending resistance should meet the condition of maintaining pressure for 15 minutes under the condition of a minimum of 1135 kgf and a 12-foot lever arm, and break at approximately 1271 - 1316 kgf.

[0003] When testing the bending resistance of porcelain bottles, as Figure 6 shown, an elastic rod is inserted into the porcelain bottle, and then one end of the elastic rod is connected to a bracket and the other end is connected to a tensile machine. The tensile machine is used to drive the elastic rod to deform, so as to obtain the bending resistance of the porcelain bottle. However, the end of the elastic rod needs to be fixed by the cooperation of bolts and nuts (as shown at point A in Figure 6 ), and it is inconvenient to disassemble the bolts and nuts. For this reason, we propose a bending resistance test tooling for high-voltage line porcelain bottles. Content of the Utility Model

[0004] Aiming at the deficiency that the end of the elastic rod used to support the porcelain bottle is fastened and connected by bolts, which is relatively cumbersome, the utility model provides a bending resistance test tooling for high-voltage line porcelain bottles, which has the advantage that the end of the elastic rod can be clamped and fixed by placing it between the lower pressing seat and the upper pressing seat, and solves the problems raised in the above background technique.

[0005] To achieve the above purposes, the utility model is realized through the following technical solutions:

[0006] Design a bending resistance test tooling for high-voltage line porcelain bottles, including a frame body connected to a tensile machine and an elastic rod, and also including an upper pressing seat and a lower pressing seat. The upper pressing seat and the lower pressing seat are stacked together, one end of the two is rotatably connected, and the lower pressing seat is installed at the end of the frame body;

[0007] Arc-shaped clamping grooves are provided on the opposite surfaces of the upper pressing seat and the lower pressing seat, and the ends of the upper pressing seat and the lower pressing seat are connected by a buckle;

[0008] Among them, the end of the elastic rod is placed in the arc-shaped clamping groove, so that the end of the elastic rod is clamped in the arc-shaped clamping groove, and the other end of the elastic rod is connected to the tensile machine.

[0009] Preferably, after the upper pressing seat covers the lower pressing seat, there is a certain distance between the two.

[0010] Preferably, the buckle includes a strip-shaped opening formed at the end of the lower pressing seat, and a threaded hole provided at the end of the upper pressing seat. A screw rod is threadedly connected in the threaded hole, and a rotating rod is connected to the top of the screw rod;

[0011] The bottom of the screw rod is movably placed in the annular seat, and a limiting disc for preventing the annular seat from falling off is provided at the bottom of the screw rod. Limiting shafts are radially connected to both sides of the annular seat;

[0012] After the upper pressing seat covers the lower pressing seat, the bottom of the screw rod is placed in the strip-shaped opening, and the limiting shafts are respectively located on both sides of the bottom of the strip-shaped opening.

[0013] Preferably, a support ring is connected to the top of the screw rod, and their axes are vertically arranged. The rotating rod is movably placed in the support ring, and limiting blocks are respectively provided at both ends of the rotating rod.

[0014] Preferably, limiting grooves for accommodating the limiting shafts are respectively provided on both sides of the bottom of the strip-shaped opening.

[0015] Preferably, the frame body includes a support arm. A connecting seat is provided at one end of the support arm, and a support seat extending upward is installed at the other end. The lower pressing seat is installed on the top of the support seat.

[0016] Preferably, a connecting bolt perpendicular to its axis is provided at the end of the elastic rod away from the support seat, and the top of the connecting bolt is threadedly connected in the connecting sleeve;

[0017] A limiting seat is movably provided in the connecting sleeve. A connecting rod is coaxially provided at the top of the limiting seat, and the top of the connecting rod coaxially penetrates through the top and is connected to the tensile testing machine.

[0018] Compared with the prior art, when the present utility model is in use, the porcelain bottle is sleeved on the elastic rod, and then the elastic rod is placed on the lower pressing seat and fixed by pressing with the upper pressing seat. The elastic rod is fixed by the clamping method of the upper pressing seat and the lower pressing seat, which can not only meet the support strength requirements of the experiment, but also facilitate the installation and disassembly of the elastic rod, and has a significant improvement compared with the bolt fastening method. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic three-dimensional structure of the present utility model Figure 1 。

[0020] Figure 2 is a schematic three-dimensional structure of the present utility model Figure 2 。

[0021] Figure 3 is a schematic three-dimensional structure of the present utility model Figure 3 。

[0022] Figure 4 is a schematic three-dimensional structure diagram of the connection between the present utility model and the tensile testing machine.

[0023] Figure 5 This is a side view of the connection between the present utility model and a tensile testing machine.

[0024] Figure 6 This is a schematic diagram of an existing porcelain bottle bending resistance test tooling.

[0025] In the figure: 1, support arm; 2, strip-shaped opening; 3, connecting seat; 4, elastic rod; 5, connecting bolt; 6, connecting rod; 7, limiting seat; 8, connecting sleeve; 9, porcelain bottle; 10, upper pressing seat; 11, rotating rod; 12, lower pressing seat; 13, support; 14, arc-shaped clamping groove; 15, limiting disc; 16, annular seat; 17, threaded hole; 18, screw rod; 19, support ring; 20, limiting block; 21, limiting shaft; 22, limiting groove. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] Please refer to Figures 1 to 5 , the present utility model provides a technical solution: a high-voltage line porcelain bottle bending resistance test tooling, including a frame body connected to a tensile testing machine. The structure of the frame body includes a support arm 1. One end of the support arm 1 is provided with a connecting seat 3, and the other end is installed with a support 13 extending upward. As Figure 4 and Figure 5 shown, the support 13 is firmly fastened to the side of the tensile testing machine detection table by bolts.

[0028] A lower pressing seat 12 is installed on the top of the support 13. An upper pressing seat 10 is stacked above the lower pressing seat 12, and one end of the two is rotatably connected together, so that the upper pressing seat 10 can rotate around the lower pressing seat 12. Arc-shaped clamping grooves 14 are provided on the opposite surfaces of the upper pressing seat 10 and the lower pressing seat 12. The elastic rod 4 in the test tooling is used to be inserted into the porcelain bottle 9 to simulate that the porcelain bottle is installed on the cable of the top of the transmission tower. Then, the end of the elastic rod 4 is placed in the arc-shaped clamping groove 14. When the upper pressing seat 10 and the lower pressing seat 12 are combined, the end of the elastic rod 4 is firmly clamped between the upper pressing seat 10 and the lower pressing seat 12. Moreover, the ends of the upper pressing seat 10 and the lower pressing seat 12 are connected by a buckle, so that the upper pressing seat 10 and the lower pressing seat 12 are firmly fixed together and will not loosen;

[0029] Moreover, after the upper pressing seat 10 covers the lower pressing seat 12, there is a certain distance between them, which allows room for tension between the upper pressing seat 10 and the lower pressing seat 12, facilitating further tightening and tensioning.

[0030] It should be noted that in this application, a support 13 is vertically provided at the end of the support arm 1, and the height of the support 13 extends above the table surface of the tensile testing machine. After the end of the elastic rod 4 is fixed to the support 13, the other end of the elastic rod 4 is located below the tensiometer of the tensile testing machine, facilitating the connection of the other end of the elastic rod 4 to the tensile testing machine. Here, the elastic rod 4 is preferably an elastic metal rod.

[0031] Furthermore, this application has further improved the buckle, making it convenient for disassembly and installation. For example, Figure 2 as shown, the buckle includes a strip-shaped opening 2 provided at the end of the lower pressing seat 12, and a threaded hole 17 provided at the end of the upper pressing seat 10. A screw 18 is threadedly connected in the threaded hole 17;

[0032] The bottom of the screw 18 is movably placed in the annular seat 16, and a limiting disk 15 for preventing the annular seat 16 from falling off is provided at the bottom of the screw 18. Limiting shafts 21 are radially connected to both sides of the annular seat 16. After the upper pressing seat 10 covers the lower pressing seat 12, the bottom of the screw 18 is placed in the strip-shaped opening 2, and the limiting shafts 21 are respectively located on both sides of the bottom of the strip-shaped opening 2;

[0033] The top of the screw 18 is connected with a support ring 19, and their axes are vertically arranged. A rotating rod 11 is movably placed in the support ring 19. Limiting blocks 20 are respectively provided at both ends of the rotating rod 11, enabling the rotating rod 11 to expand and contract in the support ring 19, and the length of the force arm for rotating the rotating rod 11 can be changed at any time;

[0034] The working mode of this buckle is as follows: First, place the end of the elastic rod 4 in the arc-shaped card slot 14, then cover the upper pressing seat 10. At this time, the screw 18 is also placed in the strip-shaped opening 2. Then, hold one end of the rotating rod 11 and rotate the screw 18 upward. Limiting grooves 22 for accommodating the limiting shafts 21 are respectively provided on both sides of the bottom of the strip-shaped opening 2. The screw 18 drives the limiting shafts 21 to move upward and be fixed in the limiting grooves 22; then continue to rotate the screw 18 to make the clamping force between the upper pressing seat 10 and the lower pressing seat 12 greater.

[0035] Furthermore, the connection method between the elastic rod and the tensiometer of the tensile testing machine has also been improved. For example, Figure 1 as shown, a connection bolt 5 perpendicular to its axis is provided at the end of the elastic rod 4 away from the support 13, and the top of the connection bolt 5 is threadedly connected in a connection sleeve 8;

[0036] A limit seat 7 is movably arranged inside the connecting sleeve 8. A connecting rod 6 is coaxially arranged at the top of the limit seat 7. The top of the connecting rod 6 penetrates through the top coaxially. The connecting rod 6 is connected to a tensile testing machine. During actual operation, first control the tensile testing machine to descend to a preset position. Then the operator sleevs the porcelain bottle 9 on the elastic rod 4. First, place the end of the elastic rod 4 on the lower pressing seat 12. At this time, do not clamp the end of the elastic rod, but first thread the connecting sleeve 8 onto the connecting bolt 5. At this time, both ends of the elastic rod 4 are supported by the connecting sleeve 8 and the lower pressing seat 12 to keep the elastic rod 4 stable. Then cover the upper pressing seat 10 and press it tightly;

[0037] When everything is ready, control the tensile testing machine to move up slowly. The rising height of the tensile testing machine and the force-bearing condition of the elastic rod 4 can be monitored in real time, so as to obtain the deformation degree of the elastic rod 4, and thus obtain the deformation amount of the elastic rod at which the porcelain bottle breaks.

[0038] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present invention; the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not clearly listed, or further includes elements inherent to this process, method, article or device.

[0039] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-voltage line porcelain bottle bending test tool, comprising a frame connected to a tensile machine and an elastic rod (4), characterized in that: It also includes an upper pressing seat (10) and a lower pressing seat (12), the upper pressing seat (10) and the lower pressing seat (12) are stacked together, one end of the upper pressing seat (10) and the lower pressing seat (12) are rotatably connected, and the lower pressing seat (12) is installed on the end of the frame; Arc-shaped slots (14) are provided on the opposing surfaces of the upper pressing seat (10) and the lower pressing seat (12), and the ends of the upper pressing seat (10) and the lower pressing seat (12) are connected by a lock; The end of the elastic rod (4) is placed in the arc-shaped slot (14), so that the end of the elastic rod (4) is clamped in the arc-shaped slot (14), and the other end of the elastic rod (4) is connected to the tensile machine.

2. The high-voltage line porcelain bottle bending test tooling according to claim 1 is characterized in that: When the upper pressing seat (10) covers the lower pressing seat (12), a certain distance exists between the two.

3. The high-voltage line porcelain bottle bending test tooling according to claim 2 is characterized in that: The lock comprises a strip-shaped opening (2) formed at the end of the lower pressing seat (12), and a threaded hole (17) provided at the end of the upper pressing seat (10); a screw rod (18) is connected to the inner thread of the threaded hole (17); and a rotating rod (11) is connected to the top of the screw rod (18); The bottom of the screw rod (18) is movably placed in the annular seat (16), and a limit plate (15) is provided at the bottom of the screw rod (18) to prevent the annular seat (16) from falling off, and both sides of the annular seat (16) are radially connected to a limit shaft (21); After the upper pressing seat (10) is covered on the upper part of the lower pressing seat (12), the bottom of the screw rod (18) is placed on the strip-shaped opening (2), and the limiting shafts (21) are respectively located on both sides of the bottom of the strip-shaped opening (2).

4. The high-voltage line porcelain bottle bending test tooling according to claim 3 is characterized in that: The top of the screw rod (18) is connected to a support ring (19), and the axes of the two are arranged vertically. The rotating rod (11) is movably placed in the support ring (19), and limit blocks (20) are respectively provided at both ends of the rotating rod (11).

5. The high-voltage line porcelain bottle bending test tooling according to claim 3 is characterized in that: Limiting grooves (22) for accommodating the limiting shaft (21) are respectively provided on both sides of the bottom of the strip-shaped opening (2).

6. The high-voltage line porcelain bottle bending test tooling according to claim 3 is characterized in that: The frame comprises a support arm (1), one end of the support arm (1) is provided with a connecting seat (3), the other end of the support arm (1) is provided with a support (13) extending upward, and the lower pressing seat (12) is installed on the top of the support (13).

7. The high-voltage line porcelain bottle bending test tooling according to claim 6 is characterized in that: One end of the elastic rod (4) away from the support (13) is provided with a connecting bolt (5) perpendicular to the axis thereof, and the top of the connecting bolt (5) is threadedly connected in the connecting sleeve (8); A limit seat (7) is movably provided in the connection sleeve (8), a connecting rod (6) is coaxially provided on the top of the limit seat (7), the top of the connecting rod (6) is coaxially penetrated and arranged on the top, and the connecting rod (6) is connected to the tensile machine.

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