A tooling suitable for transformer GIS sleeve size measurement
By designing tooling suitable for transformer GIS bushings, and using clamping components and limiting structures to fix the bushings, the problem of bushing rolling offset was solved, and the stability and accuracy of bushing size measurement were improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LILING HUAXIN ELECTRIC APPLIANCE CO LTD
- Filing Date
- 2025-10-16
- Publication Date
- 2026-07-24
AI Technical Summary
In existing technologies, the measurement of transformer GIS bushings lacks a limiting structure, which causes the bushing to easily roll and shift, affecting the measurement accuracy.
A tooling was designed that includes a support, a pipe diameter measuring frame, a clamping assembly, a limiting slide, a guide slide, a return spring, and a controller. The clamping assembly and limiting structure fix the sleeve, the return spring and guide slide adjust the position of the sleeve, and the pointer and scale are used for accurate measurement.
This improves the stability and accuracy of sleeve size detection, ensuring the accuracy of measurement results.
Smart Images
Figure CN224552278U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of GIS bushing technology, specifically a tooling suitable for measuring the dimensions of transformer GIS bushings. Background Technology
[0002] During the assembly and manufacturing of transformers, it is necessary to control the insulation distance of each part to ensure that breakdown discharge will not occur during testing. Similarly, after assembly, it is still necessary to pay attention to the external installation dimensions. This data plays a crucial role in on-site installation. After the transformer is transported to the site, it is connected to the external wiring and powered on. For example, the GIS bushing end needs to be connected to the on-site line. The bushing's external dimensions relative to ground have strict requirements. If the maximum deviation is exceeded, it will lead to the inability to install on-site.
[0003] Existing sleeve size measurement mainly relies on manual handheld measuring tools for dimensional measurement. When measuring sleeves, the lack of a limiting structure makes the sleeve prone to rolling and shifting, affecting the measurement accuracy.
[0004] Therefore, it is necessary to design a tooling suitable for measuring the dimensions of transformer GIS bushings to improve the above-mentioned problems. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model designs a tooling suitable for measuring the dimensions of transformer GIS bushings. This tooling for measuring GIS bushings aims to solve the technical problem that the lack of a limiting structure for the bushing during the testing process in existing technologies makes the bushing prone to rolling and shifting, thus affecting the accuracy of the measurement.
[0006] To achieve the above objectives, this utility model provides the following technical solution: A tooling for measuring the dimensions of GIS bushings in transformers includes a support. A pipe diameter measuring frame is fixedly connected to the top left side of the support. A clamping assembly is installed on the top side of the pipe diameter measuring frame. A ruler is provided on one side of the support. A movable groove is opened on the top right side of the support. Limiting grooves are opened on both sides of the inner wall of the movable groove. A guide rod is fixedly connected inside the limiting groove. A limiting plate is slidably connected inside the movable groove. A return spring is sleeved on the outer side of the guide rod on the back of the limiting plate. The two ends of the return spring are fixedly connected to the back of the limiting plate and the inner wall of the limiting groove, respectively. Two sets of limiting brackets are installed on the top of the support between the pipe diameter measuring frame and the limiting plate. A controller is installed on the outer side of the support. The controller is electrically connected to the clamping assembly through a wire.
[0007] Preferably, the clamping assembly consists of a bidirectional screw, a motor, and two sets of clamping bars. The top of the pipe diameter measuring frame is rotatably connected to the bidirectional screw. One end of the bidirectional screw is mounted on the outside of the pipe diameter measuring frame, and the output end of the motor is fixedly connected to one end of the bidirectional screw. The clamping bars are provided with threaded adjustment holes at positions corresponding to the bidirectional screw. The thread direction of the threaded adjustment holes of the two sets of clamping bars corresponds to the thread direction at both ends of the bidirectional screw. The clamping bars are threadedly connected to the bidirectional screw through the threaded adjustment holes. Flexible pads are provided at corresponding positions of the two sets of clamping bars.
[0008] Preferably, the pipe diameter measuring frame has a second ruler mark on the side corresponding to the limiting plate.
[0009] Preferably, guide holes are provided on both sides of the limiting plate and at positions corresponding to the guide slide rod. The limiting plate is slidably connected to the guide slide rod through the guide holes. Directional pulleys are rotatably connected to both sides of the bottom of the limiting plate. A pull handle is fixedly connected to the back of the limiting plate. A pointer is fixedly connected to one side of the limiting plate at a position corresponding to the ruler mark.
[0010] Preferably, the limiting bracket consists of a limiting frame, a side clamp, a limiting slide rod, a second return spring, a pull rod, a support bracket, and a third return spring.
[0011] Preferably, a pair of strip-shaped sliding grooves are provided on both the left and right sides of the limiting frame, and a pair of through holes are provided on both the front and rear sides of the limiting frame. A pair of side clamps are slidably connected inside the limiting frame. A limiting slide rod is fixedly connected to the side clamps at the position corresponding to the through hole. The limiting slide rod is slidably connected to the through hole. A second return spring is sleeved on the outer side of the limiting slide rod inside the limiting frame. The two sets of side clamps inside the limiting frame are fixedly connected by a pull rod.
[0012] Preferably, a pair of reset springs are installed inside the limiting frame between the two sets of side clamps. A support frame is fixedly connected to the top of the reset springs. An arc-shaped groove is opened on the top of the support frame. Limiting sliders are fixedly connected to both sides of the support frame at positions corresponding to the strip groove. The support frame is slidably connected to the strip groove through the limiting sliders.
[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. The pull rod pulls the side clamp, which slides through the limit slide rod to adjust the spacing. The support bracket uses an arc-shaped groove to support the sleeve. After the pull rod is released, the second return spring pushes the side clamp to return to its original position through its own elasticity, clamping and limiting the two sides of the sleeve. The third return spring drives the support bracket to elastically extend and retract according to the diameter of the sleeve, which facilitates the support bracket and the side clamp to clamp and limit sleeves of different sizes and improves the stability of sleeve size detection. 2. The return spring pushes the limiting plate to slide within the movable groove according to the overall length of the sleeve, pushing the end of the sleeve away from the limiting plate to contact the pipe diameter measuring frame. The limiting plate uses a pointer and scale mark one to facilitate the inspector to quickly and accurately detect the sleeve length. The controller controls the motor to drive the bidirectional screw to rotate through the wire, so that the two sets of clamping bars are connected to the bidirectional screw through the threaded adjustment hole to clamp and fix one end of the sleeve. The left clamping bar corresponds to scale mark two, which facilitates the inspector to detect the pipe diameter. Attached Figure Description
[0014] Figure 1 A schematic diagram of the overall three-dimensional structure of the GIS sleeve size measurement fixture; Figure 2 A schematic diagram of the GIS sleeve size measurement tooling section; Figure 3 This is a schematic diagram of the limiting plate structure; Figure 4 This is a schematic diagram of the internal structure of the limiting bracket; Figure 5 This is a schematic diagram of the clamping bar structure;
[0015] In the picture
[0016] 1. Bracket; 101. Scale Mark 1; 102. Movable Groove; 103. Limiting Slide Groove; 1031. Guide Slide Rod; 1032. Return Spring 1; 2. Pipe Diameter Measuring Frame; 201. Clamping Assembly; 2011. Bidirectional Screw; 2012. Motor; 2013. Clamping Strip; 2014. Threaded Adjustment Hole; 2015. Flexible Pad; 202. Scale Mark 2; 3. Limiting Plate; 301. Guide Slide Hole; 302. Directional Pulley; 303. Pull Handle; 304. Pointer; 4. Limiting Bracket; 401. Limiting Frame; 4011. Strip Slide Groove; 402. Side Clamp; 403. Limiting Slide Rod; 404. Return Spring 2; 405. Pull Rod; 406. Support Frame; 4061. Arc-shaped Support Groove; 4062. Limiting Slider; 407. Return Spring 3; 5. Controller. Detailed Implementation
[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model. Example
[0018] This utility model provides a tooling for measuring the dimensions of transformer GIS bushings. This tooling for measuring GIS bushings aims to solve the technical problem that the lack of a limiting structure for the bushing during the existing testing process makes the bushing prone to rolling and displacement, affecting the accuracy of the measurement.
[0019] Please see Figures 1-5 This embodiment provides a tooling suitable for measuring the dimensions of transformer GIS bushings, including a bracket 1. A ruler 101 is provided on one side of the bracket 1. A movable groove 102 is provided on the top right side of the bracket 1. Limiting grooves 103 are provided on both sides of the inner wall of the movable groove 102. A guide slide rod 1031 is fixedly connected inside the limiting groove 103. A return spring 1032 is sleeved on the outer side of the guide slide rod 1031 on the back of the limiting plate 3. The two ends of the return spring 1032 are fixedly connected to the back of the limiting plate 3 and the inner wall of the limiting groove 103, respectively.
[0020] In this embodiment, please refer to Figure 1 , Figure 2 and Figure 5 A pipe diameter measuring frame 2 is fixedly connected to the top left side of the bracket 1. A clamping assembly 201 is installed on the top side of the pipe diameter measuring frame 2. The clamping assembly 201 consists of a bidirectional screw 2011, a motor 2012, and two sets of clamping bars 2013. The top of the pipe diameter measuring frame 2 is rotatably connected to the bidirectional screw 2011. One end of the bidirectional screw 2011 is located on the outside of the pipe diameter measuring frame 2, and the motor 2012 is installed thereon. The output end of the motor 2012 is fixedly connected to one end of the bidirectional screw 2011. Threaded adjustment holes 2014 are opened at positions corresponding to the bidirectional screw 2011 on the clamping bars 2013. The thread direction of the threaded adjustment holes 2014 of the two sets of clamping bars 2013 corresponds to the thread direction at both ends of the bidirectional screw 2011. The clamping bar 2013 is threadedly connected to the bidirectional screw 2011 through the threaded adjustment hole 2014. Flexible pads 2015 are provided at corresponding positions of the two sets of clamping bars 2013. The flexible pads 2015 provide flexible clamping for both sides of the sleeve. The pipe diameter measuring frame 2 is provided with a scale mark 202 on the side corresponding to the limiting plate 3. The limiting plate 3 pushes the end of the sleeve away from the limiting plate 3 to contact the pipe diameter measuring frame 2. The controller 5 controls the motor 2012 to drive the bidirectional screw 2011 to rotate through the wire, so that the two sets of clamping bars 2013 are threadedly connected to the bidirectional screw 2011 through the threaded adjustment hole 2014 to clamp and fix one end of the sleeve. The left clamping bar 2013 corresponds to the scale mark 202, which makes it easy for the inspector to detect the pipe diameter.
[0021] In this embodiment, please refer to Figure 1 and Figure 3The movable groove 102 has a sliding connection to a limiting plate 3. Guide sliding holes 301 are provided on both sides of the limiting plate 3, corresponding to the guide slide rod 1031. The return spring 1032, using its elasticity, pushes the limiting plate 3 through the guide sliding holes 301 to slide and connect with the guide slide rod 1031 according to the overall length of the sleeve. The distance between the limiting plate 3 and the pipe diameter measuring frame 2 is adjusted. Directional pulleys 302 are rotatably connected to both sides of the bottom of the limiting plate 3, and the directional pulleys 302 slide against the ground. The connection improves the smoothness of the movement adjustment of the limiting plate 3. A pull handle 303 is fixedly connected to the back of the limiting plate 3. The pull handle 303 pulls the limiting plate 3 to slide within the movable groove 102. A pointer 304 is fixedly connected to one side of the limiting plate 3 at a position corresponding to the scale mark 101. After the limiting plate 3 and the pipe diameter measuring frame 2 clamp the two ends of the sleeve, the pointer 304 fixed to one side of the limiting plate 3 cooperates with the scale mark 101 to facilitate the inspector to quickly and accurately detect the sleeve length.
[0022] In this embodiment, please refer to Figure 1 , Figure 2 and Figure 4Two sets of limiting brackets 4 are installed on the top of the bracket 1 between the pipe diameter measuring frame 2 and the limiting plate 3. The limiting bracket 4 consists of a limiting frame 401, side clamps 402, limiting slide rods 403, a second return spring 404, a pull rod 405, a support bracket 406, and a third return spring 407. A pair of strip-shaped slide grooves 4011 are opened on both the left and right sides of the limiting frame 401, and a pair of through holes are opened on both the front and rear sides of the limiting frame 401. A pair of side clamps 402 are slidably connected inside the limiting frame 401. 2. A limiting slide rod 403 is fixedly connected to the position corresponding to the through hole. The limiting slide rod 403 is slidably connected to the through hole to improve the stability of the elastic extension and contraction of the second return spring 404. The second return spring 404 is sleeved on the outside of the limiting slide rod 403 inside the limiting frame 401. The side clamps 402 inside the two sets of limiting frames 401 are fixedly connected by a pull rod 405. A pair of third return springs 407 are installed inside the limiting frame 401 between the two sets of side clamps 402. The top of the third return spring 407 is fixedly connected to... There is a support bracket 406, with an arc-shaped support groove 4061 on the top. A pull rod 405 pulls the side clamp 402, which is slidably connected to the through hole via a limiting slide rod 403 and is positioned inside the limiting frame 401 for spacing adjustment. The support bracket 406 provides support for the sleeve using the arc-shaped support groove 4061. After the pull rod 405 is released, the second return spring 404 pushes the side clamp 402 to return to its original position through its own elasticity, clamping and limiting both sides of the sleeve. The third return spring 407 moves the support bracket according to the diameter of the sleeve. The support frame 406 is elastically telescopic, which facilitates the clamping and limiting of sleeves of different sizes and thicknesses by the support frame 406 and the side clamp 402, improving the stability during sleeve size detection. Limiting sliders 4062 are fixedly connected to both sides of the support frame 406 at positions corresponding to the strip groove 4011. The support frame 406 is slidably connected to the strip groove 4011 through the limiting sliders 4062, which improves the smoothness and stability of the return spring 407 in elastically telescopically driving the support frame 406 to rise and fall according to the sleeve diameter.
[0023] In this embodiment, please refer to Figure 1 and Figure 2 A controller 5 is installed on the outside of the bracket 1. The controller 5 is electrically connected to the clamping assembly 201 via a wire, and controls the clamping assembly 201 to clamp and position one end of the sleeve.
[0024] In addition, it should be noted that the motor 2012 and the controller 5 are both existing technologies, and their internal working principles and operation procedures will not be described in detail here.
[0025] The working process of this utility model is as follows: First, the pull handle 303 pulls the limiting plate 3 to slide inside the movable groove 102, creating distance from the limiting bracket 4 and avoiding the sleeve. Simultaneously, the pull rod 405 pulls the side clamps 402 inside the two sets of limiting frames 401, which are slidably connected to the through holes via the limiting slide rod 403 to adjust the spacing inside the limiting frame 401. The sleeve is then placed on the support bracket 406, which provides support for the sleeve using the arc-shaped support groove 4061. After releasing the pull rod 405, the second return spring 404 pushes the side clamps 402 to return to their original position through its own elasticity, clamping and limiting both sides of the sleeve. The third return spring 407, based on the sleeve's diameter, drives the support bracket 406 to slide through the limiting slider 4062 and the strip groove 4011 inside the limiting frame 401 for elastic extension and retraction. This facilitates the support bracket 406 and the side clamps 402 in clamping and limiting sleeves of different sizes and thicknesses, improving the sleeve size inspection. For stability during measurement, the reset spring 1032 uses its own elasticity to push the limiting plate 3 through the guide sliding hole 301 and the guide sliding rod 1031 to slide and connect according to the overall length of the sleeve. This allows the limiting plate 3 and the pipe diameter measuring frame 2 to clamp and position both ends of the sleeve. The directional pulley 302 slides and connects to the ground to improve the smoothness of the movement adjustment of the limiting plate 3. The pointer 304 fixed on one side of the limiting plate 3 cooperates with the scale 101 to facilitate the inspector to quickly and accurately detect the length of the sleeve. The controller 5 controls the motor 2012 to drive the bidirectional screw 2011 to rotate through the wire. This causes the two sets of clamping bars 2013 to be threadedly connected to the bidirectional screw 2011 through the threaded adjustment hole 2014 to clamp and fix one end of the sleeve. The flexible pad 2015 on the clamping bar 2013 provides flexible clamping to both sides of the sleeve. The left clamping bar 2013 corresponds to the scale 202, which facilitates the inspector to quickly and accurately detect the pipe diameter.
[0026] The entire operation process is simple and convenient. Compared with the existing GIS sleeve measurement tooling, this utility model can improve the stability and accuracy of sleeve size detection through design, and enhance the overall practicality.
[0027] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.
Claims
1. A tooling suitable for measuring the dimensions of transformer GIS bushings, comprising a support (1), characterized in that: A pipe diameter measuring frame (2) is fixedly connected to the top left side of the bracket (1). A clamping assembly (201) is installed on the top side of the pipe diameter measuring frame (2). A ruler (101) is provided on one side of the bracket (1). A movable groove (102) is provided on the top right side of the bracket (1). Limiting grooves (103) are provided on both sides of the inner wall of the movable groove (102). A guide slide rod (1031) is fixedly connected inside the limiting groove (103). A limiting plate is slidably connected inside the movable groove (102). (3) The outer side of the guide slide rod (1031) is fitted with a reset spring (1032) on the back of the limiting plate (3). The two ends of the reset spring (1032) are fixedly connected to the back of the limiting plate (3) and the inner wall of the limiting slide groove (103) respectively. The top of the bracket (1) is fitted with two sets of limiting brackets (4) between the pipe diameter measuring frame (2) and the limiting plate (3). The outer side of the bracket (1) is fitted with a controller (5). The controller (5) is electrically connected to the clamping assembly (201) through a wire.
2. The tooling for measuring the dimensions of transformer GIS bushings according to claim 1, characterized in that: The clamping assembly (201) consists of a bidirectional screw (2011), a motor (2012), and two sets of clamping bars (2013). The top of the pipe diameter measuring frame (2) is rotatably connected to the bidirectional screw (2011). One end of the bidirectional screw (2011) is located on the outside of the pipe diameter measuring frame (2), and the motor (2012) is installed thereon. The output end of the motor (2012) is fixedly connected to one end of the bidirectional screw (2011). The clamping bars (2013) 3) A threaded adjustment hole (2014) is provided at the position corresponding to the bidirectional screw (2011). The thread direction of the threaded adjustment hole (2014) of the two sets of clamping bars (2013) is corresponding to the thread direction at both ends of the bidirectional screw (2011). The clamping bar (2013) is threadedly connected to the bidirectional screw (2011) through the threaded adjustment hole (2014). A flexible pad (2015) is provided at the corresponding position of the two sets of clamping bars (2013).
3. The tooling for measuring the dimensions of transformer GIS bushings according to claim 1, characterized in that: The pipe diameter measuring frame (2) is provided with a ruler mark 2 (202) on the side corresponding to the limiting plate (3).
4. The tooling for measuring the dimensions of transformer GIS bushings according to claim 1, characterized in that: Guide sliding holes (301) are provided on both sides of the limiting plate (3) and at positions corresponding to the guide slide rod (1031). The limiting plate (3) is slidably connected to the guide slide rod (1031) through the guide sliding holes (301). Directional pulleys (302) are rotatably connected to both sides of the bottom of the limiting plate (3). A pull handle (303) is fixedly connected to the back of the limiting plate (3). A pointer (304) is fixedly connected to one side of the limiting plate (3) at a position corresponding to the first ruler (101).
5. The tooling for measuring the dimensions of transformer GIS bushings according to claim 1, characterized in that: The limiting bracket (4) is composed of a limiting frame (401), a side clamp (402), a limiting slide bar (403), a second reset spring (404), a pull rod (405), a support bracket (406), and a third reset spring (407).
6. The tooling for measuring the dimensions of transformer GIS bushings according to claim 5, characterized in that: The limiting frame (401) has a pair of strip grooves (4011) on both the left and right sides, and a pair of through holes on both the front and rear sides. A pair of side clamps (402) are slidably connected inside the limiting frame (401). A limiting slide rod (403) is fixedly connected to the side clamp (402) at the position corresponding to the through hole. The limiting slide rod (403) is slidably connected to the through hole. A second return spring (404) is sleeved on the outside of the limiting slide rod (403) inside the limiting frame (401). The two sets of side clamps (402) inside the limiting frame (401) are fixedly connected by a pull rod (405).
7. The tooling for measuring the dimensions of transformer GIS bushings according to claim 6, characterized in that: Inside the limiting frame (401), between the two sets of side clamps (402), a pair of return springs (407) are installed. The top of the return springs (407) is fixedly connected to a support frame (406). The top of the support frame (406) is provided with an arc-shaped support groove (4061). Limiting sliders (4062) are fixedly connected to both sides of the support frame (406) at positions corresponding to the strip groove (4011). The support frame (406) is slidably connected to the strip groove (4011) through the limiting sliders (4062).