Insulation test tool for insulator
By designing an adjustable insulator insulation test fixture, flexible adaptation and test coverage of insulators of different specifications are achieved, solving the problems of high cost and low efficiency in existing technologies, and improving the efficiency and safety of the test.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GANSU ELECTRIC APPARATUS RESEARCH INSTITUTE
- Filing Date
- 2025-05-26
- Publication Date
- 2026-07-21
Smart Images

Figure CN224536018U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of high-voltage electrical equipment testing technology, specifically to an insulator insulation testing fixture. Background Technology
[0002] Overhead line insulators are critical components of transmission lines and require testing to simulate actual installation conditions. According to the GB / T 1001.2-2010 standard, insulator dimensions vary significantly depending on voltage level and manufacturer design. Traditional testing fixtures must be designed individually for each specification, resulting in high costs and low efficiency. Current technology lacks flexible, universal testing fixtures, making it difficult to meet the testing needs of multiple insulator specifications. Utility Model Content
[0003] The purpose of this utility model is to provide an insulator insulation test fixture, which achieves flexible adaptation of horizontal and vertical dimensions through an adjustable structure. Only one set of fixtures is needed to cover multiple insulator specifications, while optimizing the hoisting design to ensure test balance.
[0004] To achieve the above objectives, this utility model provides the following technical solution: an insulator insulation test fixture, comprising an equalizing ring, a transverse support, a longitudinal support, a transverse reverse wire connector, a longitudinal reverse wire connector, and lifting holes; the transverse support consists of two sets of parallel support frames, each set of transverse support frames having an equalizing ring installed at both ends, the equalizing ring being adjustablely connected to the transverse support frame via the transverse reverse wire connector; the two sets of transverse support frames are connected longitudinally via the longitudinal support, the longitudinal support being adjustablely connected to the transverse support frame via the longitudinal reverse wire connector; several lifting holes are evenly distributed in the middle of the transverse support frame for lifting and balancing the fixture as a whole using external lifting equipment.
[0005] Preferably, the transverse reverse thread connector includes symmetrically arranged threaded adjusting rods and bidirectional threaded sleeves. The two ends of the threaded adjusting rods are respectively threaded to the inner wall of the equalizing ring and the transverse support. The axial position of the equalizing ring on the transverse support can be changed by screwing the bidirectional threaded sleeve or the threaded adjusting rod.
[0006] Preferably, the longitudinal reverse thread connector includes a bidirectional threaded sleeve, the two ends of which are threaded to the longitudinal support members of two sets of transverse support members, and the spacing between the two sets of transverse support members can be adjusted by rotating the sleeve.
[0007] Preferably, the longitudinal support is a rigid connecting rod, and its movable end is welded with a threaded interface that matches the longitudinal reverse thread connector to ensure a stable connection between the transverse supports.
[0008] Preferably, several of the lifting holes are symmetrically and evenly arranged on the center line of the two sets of transverse supports, and the axis of the lifting holes is perpendicular to the extension direction of the transverse supports.
[0009] The working process of this utility model is as follows: By using lifting holes symmetrically distributed along the center line of the transverse support, the entire fixture is lifted to below the insulator string using external hoisting equipment, ensuring uniform force distribution during the lifting process and avoiding skewing.
[0010] Rotate the bidirectional threaded sleeve of the longitudinal reverse thread connector to adjust the spacing between the two sets of transverse supports to one-tenth of the insulator string length, adapting to the longitudinal spacing requirements of insulators of different specifications. Tighten the threaded adjusting rod or bidirectional threaded sleeve of the transverse reverse thread connector to change the axial position of the equalizing ring on the transverse support, so that the transverse length of the fixture matches the actual length of the insulator string.
[0011] The multi-point hoisting design ensures precise alignment between the tooling and the insulator string, avoiding installation errors and meeting the simulation requirements of the test conditions in the GB / T1001.2-2010 standard.
[0012] The beneficial effects of this utility model are as follows: (1) This utility model can achieve flexible adjustment of the length of the transverse simulated conductor and the spacing of the longitudinal conductor by means of the bidirectional adjustment design of the transverse reverse wire connector and the longitudinal reverse wire connector, covering the differences in insulator size of different voltage levels and different manufacturers. Only one set of tooling is needed to meet the test requirements of multiple specifications, significantly reducing the tooling development and maintenance costs.
[0013] (2) The lifting holes of this utility model are symmetrically arranged on the center line of the horizontal support. The multi-point lifting design ensures the uniformity of force when the tooling is lifted, avoids installation errors or test data deviations caused by skewing, and improves the safety of high-altitude operations.
[0014] (3) The tooling of this utility model adopts a split structure. The equalizing ring, the transverse support and the longitudinal support are connected by a standard threaded interface, which supports quick disassembly and partial replacement and reduces maintenance time. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model; In the diagram: 1-Equalizing ring, 2-Transverse support, 3-Longitudinal support, 4-Transverse reverse thread connector, 5-Longitudinal reverse thread connector, 6-Lifting hole. Detailed Implementation
[0016] The present invention will now be described in further detail with reference to the accompanying drawings.
[0017] like Figure 1The insulator insulation test fixture shown includes an equalizing ring 1, a transverse support 2, a longitudinal support 3, a transverse reverse wire connector 4, a longitudinal reverse wire connector 5, and lifting holes 6. The transverse support 2 consists of two sets of parallel support frames, with an equalizing ring 1 installed at both ends of each set of transverse support 2. The equalizing ring 1 is tunably connected to the transverse support 2 via the transverse reverse wire connector 4. The two sets of transverse support 2 are connected longitudinally via the longitudinal support 3, which is tunably connected to the transverse support 2 via the longitudinal reverse wire connector 5. Several lifting holes 6 are evenly distributed in the middle of the transverse support 2 for lifting and balancing the fixture as a whole using external lifting equipment.
[0018] The transverse reverse thread connector 4 includes a symmetrically arranged threaded adjusting rod and a bidirectional threaded sleeve. The two ends of the threaded adjusting rod are respectively threaded to the inner wall of the equalizing ring 1 and the transverse support 2. The axial position of the equalizing ring 1 on the transverse support 2 can be changed by screwing the bidirectional threaded sleeve or the threaded adjusting rod.
[0019] The longitudinal reverse thread connector 5 includes a bidirectional threaded sleeve, the two ends of which are threaded to the longitudinal support 3 of the two sets of transverse support members 2 respectively. The spacing between the two sets of transverse support members 2 can be adjusted by rotating the sleeve.
[0020] The longitudinal support 3 is a rigid connecting rod, and its movable end is welded with a threaded interface that matches the longitudinal reverse thread connector 5, which is used to ensure a stable connection between the transverse support 2.
[0021] Several lifting holes 6 are symmetrically and evenly arranged on the center line of the two sets of transverse support members 2, and the axis of the lifting holes 6 is perpendicular to the extension direction of the transverse support members 2.
[0022] The working process of this utility model is as follows: By using lifting holes 6 symmetrically distributed along the center line of the transverse support 2, the entire fixture is lifted to below the insulator string using external lifting equipment, ensuring uniform force distribution during lifting and avoiding skewing.
[0023] Rotate the bidirectional threaded sleeve of the longitudinal reverse thread connector 5 to adjust the spacing between the two sets of transverse support members 2 to one-tenth of the length of the insulator string, adapting to the longitudinal spacing requirements of insulators of different specifications.
[0024] Tighten the threaded adjusting rod or bidirectional threaded sleeve of the transverse reverse thread connector 4 to change the axial position of the equalizing ring 1 on the transverse support 2, so that the transverse length of the tooling matches the actual length of the insulator string.
[0025] The multi-point hoisting design ensures precise alignment between the tooling and the insulator string, avoiding installation errors and meeting the simulation requirements of the test conditions in the GB / T1001.2-2010 standard.
[0026] This fixture allows for flexible adjustment of the length of the transverse conductor and the spacing of the longitudinal conductor through bidirectional adjustment functions in both the transverse and longitudinal directions. Only one set of equipment is needed to cover the testing requirements of insulators of various specifications, taking into account efficiency, safety and economy.
[0027] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, based on the technical teachings provided by this utility model and as common knowledge in the field, other equivalent modifications and improvements can be made, and these should also be considered within the protection scope of this utility model.
Claims
1. An insulator insulation testing fixture, characterized in that, It includes a pressure equalizing ring (1), a transverse support (2), a longitudinal support (3), a transverse reverse thread connector (4), a longitudinal reverse thread connector (5), and lifting holes (6); the transverse support (2) consists of two sets of parallel support frames, each set of transverse support (2) is equipped with a pressure equalizing ring (1) at both ends, and the pressure equalizing ring (1) is tunably connected to the transverse support (2) through the transverse reverse thread connector (4); the two sets of transverse support (2) are connected to each other through the longitudinal support (3) extending longitudinally, and the longitudinal support (3) is tunably connected to the transverse support (2) through the longitudinal reverse thread connector (5); several lifting holes (6) are evenly distributed in the middle of the transverse support (2) for lifting and balancing the tooling as a whole through external lifting equipment.
2. The insulator insulation testing fixture according to claim 1, characterized in that: The transverse reverse thread connector (4) includes a symmetrically arranged threaded adjusting rod and a bidirectional threaded sleeve. The two ends of the threaded adjusting rod are respectively threaded to the inner wall of the equalizing ring (1) and the transverse support (2). The axial position of the equalizing ring (1) on the transverse support (2) can be changed by screwing the bidirectional threaded sleeve or the threaded adjusting rod.
3. An insulator insulation testing fixture according to claim 1 or 2, characterized in that: The longitudinal reverse thread connector (5) includes a bidirectional threaded sleeve. The two ends of the bidirectional threaded sleeve are respectively threaded to the longitudinal support (3) of the two sets of transverse support (2). The spacing between the two sets of transverse support (2) can be adjusted by rotating the sleeve.
4. The insulator insulation test fixture according to claim 3, characterized in that: The longitudinal support member (3) is a rigid connecting rod, and its movable end is welded with a threaded interface that matches the longitudinal reverse thread connector (5) to ensure a stable connection between the transverse support members (2).
5. The insulator insulation testing fixture according to claim 4, characterized in that: Several lifting holes (6) are symmetrically and evenly arranged on the center line of the two sets of transverse support members (2), and the axis of the lifting holes (6) is perpendicular to the extension direction of the transverse support members (2).