Clamp for assembling capacitor sleeve

Abstract

The utility model relates to the technical field of transformers, and particularly discloses a clamp for assembling a capacitor bushing, which comprises a fixed bottom plate, sliding rails are symmetrically and fixedly connected to the fixed bottom plate. The sliding rail is slidably sleeved with a movable clamping plate. The fixed bottom plate is fixedly connected with a fixed clamping plate corresponding to the movable clamping plate; a threaded base is fixedly connected to the fixed bottom plate; a bent handle is inserted into the threaded base in a threaded manner; the cylindrical part of the capacitor bushing is moved between the fixed clamping plate and the movable clamping plate, then the bent handle is held to drive the cam extrusion plate to rotate, and the cam extrusion plate extrudes the movable clamping plate to perform displacement clamping towards the capacitor bushing, so that one end of the capacitor bushing is stably clamped; the capacitor bushing can be clamped and fixed by only two clamps, so that the clamping is efficient and rapid, the contact area with the cylindrical surface of the capacitor bushing is large, the capacitor bushing is not easy to damage and is safer, and the problem that the existing clamp is easy to damage due to large pressure caused by small contact surface with the capacitor bushing is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, and particularly relates to a fixture for assembling a capacitor bushing. Background Art

[0002] The capacitor bushing of a transformer is an important component used in high-voltage power transformers. It not only plays an electrical insulation role but also is responsible for safely leading out the high-voltage leads inside the transformer to the external environment; capacitive bushings are usually used in high-voltage transformers above 100 kV. With the progress of manufacturing technology, the requirements for capacitor bushings are getting higher and higher, especially in terms of their dimensional accuracy and insulation performance.

[0003] The Chinese utility model patent with the publication number CN218397704U discloses a non-destructive clamping device for a bushing on January 31, 2023, which includes a clamping device body, a movable block, and a clamping block. The movable block is movably connected to the left side of the top of the clamping device body, the clamping block is fixedly connected to the right side of the top of the clamping device body, a connecting plate is movably connected to the right side of the front surface of the clamping block, and a scraping plate located on the left side of the connecting plate is movably connected to the front surface of the clamping block. By setting a tension mechanism and a fixing strip to cooperate with the connecting plate and the scraping plate to scrape and clean the surface of the workpiece, the utility model solves the problem that the existing clamping device cannot clean the clamping surface of the workpiece well during use. Since various sundries will adhere and adsorb on the surface of the workpiece, the sundries will be stressed during the clamping process, and it is extremely easy to cause scratches on the surface of the workpiece to form pits. After the workpiece is put into use, rust will occur at the pit, reducing the clamping effect of the clamping device and the quality of the workpiece, and has the advantage of clamping and cleaning.

[0004] However, the above-mentioned disclosed solution has the following deficiencies: the contact surface between the existing clamping mechanism and the component to be clamped is small, resulting in a large pressure on the clamping component during clamping, which is likely to cause damage, making it difficult to clamp stably, and unable to stably clamp an object with a flat surface. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the technical problem that the contact surface between the existing clamping mechanism and the component to be clamped is small, resulting in a large pressure on the clamping component during clamping, which is likely to cause damage, making it difficult to clamp stably, and unable to stably clamp an object with a flat surface, and to provide a fixture for assembling a capacitor bushing.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions to implement;

[0007] A fixture for assembling a capacitor bushing according to the present utility model includes a fixed bottom plate; symmetrically fixed on the fixed bottom plate are slide rails; slidably sleeved on the slide rails are movable clamping plates; corresponding to the movable clamping plates on the fixed bottom plate are fixed clamping plates; fixed on the fixed bottom plate is a threaded base; threadedly inserted into the threaded base is a bent handle; corresponding to the movable clamping plate on the bent handle is a cam pressing plate.

[0008] Further, installation grooves are provided on both the fixed clamping plate and the movable clamping plate; fixedly connected in the installation grooves are quick-release sliders; fixedly connected to the arc surface of the quick-release slider is an anti-slip plate.

[0009] Further, a planar fixture is inserted into the installation groove.

[0010] Further, a hidden groove is provided on the planar fixture; threadedly connected to the hole in the hidden groove is a rotating plate with a threaded shaft.

[0011] Further, a friction plate is fixedly connected to the outer surface of the rotating plate.

[0012] A fixture for assembling a capacitor bushing provided by the present utility model has the following beneficial effects:

[0013] 1. By moving the cylindrical part of the capacitor bushing between the fixed clamping plate and the movable clamping plate, then holding the bent handle to drive the cam pressing plate to rotate, the cam pressing plate presses the movable clamping plate to displace and clamp towards the capacitor bushing, so that one end of the capacitor bushing is stably clamped. Only two such fixtures are needed to clamp and fix the capacitor bushing, making the clamping efficient and fast, and having a large contact area with the cylindrical surface of the capacitor bushing, so it is not easy to be damaged and is safer, solving the problem that the existing fixture has a small contact surface with the capacitor bushing, resulting in large pressure and easy damage.

[0014] 2. By rotating the rotating plate, driving the threaded shaft to rotate and move in the threaded hole in the hidden groove, the distance between the two rotating plates is changed, so that the part of the capacitor bushing with a lower thickness can be clamped, making the clamping thickness range larger, and thus carrying out clamping work for more complex clamping requirements, solving the problem that the existing fixture is specialized and has a narrow application range. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following further describes in detail the specific implementation manners of the present utility model in conjunction with the drawings;

[0016] Figure 1 It is an isometric structural schematic diagram of the present utility model;

[0017] Figure 2 It is a front view structural schematic diagram of the present utility model;

[0018] Figure 3This is a top view structural schematic diagram of the present utility model.

[0019] Description of reference numerals in the figure: 1, fixed bottom plate; 2, slide rail; 3, fixed clamping plate; 4, movable clamping plate; 5, installation groove; 6, quick-release slider; 7, anti-slip plate; 8, flat fixture; 9, hidden groove; 10, rotating plate; 11, friction plate; 12, threaded base; 13, bent handle; 14, cam pressing plate. Specific embodiments

[0020] It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0021] 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.

[0022] It should be noted that all directional indications (such as up - down - left - right - front - back...) in the embodiments of the present utility model are only used to explain the relative positional relationship - movement conditions, etc. between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly. The described connection can be a direct connection or an indirect connection.

[0023] Please refer to Figures 1-3 As shown, a fixture for assembling a capacitor bushing includes a fixed bottom plate 1; symmetrically fixed on the fixed bottom plate 1 are slide rails 2; slidably sleeved on the slide rails 2 is a movable clamping plate 4; corresponding to the movable clamping plate 4 on the fixed bottom plate 1 is a fixed clamping plate 3; fixed on the fixed bottom plate 1 is a threaded base 12; threadedly inserted into the threaded base 12 is a bent handle 13; corresponding to the movable clamping plate 4 on the bent handle 13 is a cam pressing plate 14; during operation, by moving the cylindrical part of the capacitor bushing between the fixed clamping plate 3 and the movable clamping plate 4, and then holding the bent handle 13 to drive the cam pressing plate 14 to rotate, the cam pressing plate 14 presses the movable clamping plate 4 to displace and clamp towards the capacitor bushing, so that one end of the capacitor bushing is stably clamped. Only two of these fixtures are needed to clamp and fix the capacitor bushing, making the clamping efficient and fast, and having a large contact area with the cylindrical surface of the capacitor bushing, so it is not easy to be damaged and is safer, solving the problem that the existing fixture has a small contact surface with the capacitor bushing, resulting in large pressure and easy damage.

[0024] Both the fixed clamping plate 3 and the movable clamping plate 4 are provided with mounting grooves 5; a quick-release slider 6 is fixedly connected in the mounting groove 5; an anti-slip plate 7 is fixedly connected to the arc surface of the quick-release slider 6; during operation, the anti-slip plate 7 is used to replace the direct contact between the arc surface of the quick-release slider 6 and the capacitor sleeve, thereby protecting the surface of the capacitor sleeve from being scratched and solving the problem that the existing fixture has a small contact surface and is prone to wear.

[0025] A flat fixture 8 is inserted into the mounting groove 5; during operation, through two mutually parallel flat fixtures 8, the mutually parallel surfaces on the capacitor sleeve can be clamped, such as the terminal, solving the problem that the existing capacitor sleeve fixture can only clamp the cylindrical part of the insulating sleeve.

[0026] A hidden groove 9 is provided on the flat fixture 8; a rotating plate 10 with a threaded shaft is connected to the hidden groove 9 by threaded connection through a hole; during operation, by rotating the rotating plate 10, the threaded shaft is driven to rotate and move in the threaded hole of the hidden groove 9, thereby changing the distance between the two rotating plates 10, so that the part of the capacitor sleeve with a lower thickness can be clamped, so that the clamping thickness range is larger, and thus the clamping work can be carried out for more complex clamping requirements, solving the problem that the existing fixture is specialized and has a narrow application range.

[0027] A friction plate 11 is fixedly connected to the outer surface of the rotating plate 10; during operation, the friction plate 11 made of rubber is located between the rotating plate 10 and the capacitor sleeve, thereby protecting the surface of the capacitor sleeve and protecting the surface of the capacitor sleeve from frictional damage, making it safer.

[0028] With the above solution, when the utility model is in use, by moving the cylindrical part of the capacitive bushing between the fixed clamping plate 3 and the movable clamping plate 4, and then holding the bent handle 13 to drive the cam pressing plate 14 to rotate, the cam pressing plate 14 presses the movable clamping plate 4 to displace and clamp towards the capacitive bushing, so that one end of the capacitive bushing is stably clamped. Only two of these jigs are needed to clamp and fix the capacitive bushing, making the clamping efficient and fast, and having a large contact area with the cylindrical surface of the capacitive bushing, so it is not easy to be damaged and is safer, solving the problem that the small contact area between the existing jig and the capacitive bushing leads to large pressure and easy damage; by using the anti-slip plate 7 to replace the arc surface of the quick-release slider 6 to directly contact the capacitive bushing, the surface of the capacitive bushing is protected from being scratched, solving the problem that the small contact area of the existing jig leads to easy wear; by two mutually parallel planar jigs 8, the mutually parallel surfaces on the capacitive bushing can be clamped, such as the terminal, solving the problem that the existing capacitive bushing jig can only clamp the cylindrical part of the insulating bushing; by rotating the rotating plate 10, driving the threaded shaft to rotate and move in the threaded hole in the hidden groove 9, so as to change the distance between the two rotating plates 10, and thus the part of the capacitive bushing with a lower thickness can be clamped, so that the clamping thickness range is larger, and thus the clamping work can be carried out for more complex clamping requirements, solving the problem that the existing jig is dedicated and has a narrow application range; by the friction plate 11 made of rubber being located between the rotating plate 10 and the capacitive bushing, the surface of the capacitive bushing is protected, and the surface of the capacitive bushing is protected from frictional damage, so it is safer.

[0029] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0030] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art of this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed.

Claims

1. A clamp for assembling a capacitor bushing, characterized in that; The invention comprises a fixed base plate (1); a slide rail (2) is symmetrically fixedly connected to the fixed base plate (1); a movable clamp (4) is slidably sleeved on the slide rail (2); a fixed clamp (3) is fixedly connected to the fixed base plate (1) corresponding to the movable clamp (4); a threaded base (12) is fixedly connected to the fixed base plate (1); a curved handle (13) is threadedly inserted on the threaded base (12); a cam extrusion plate (14) is fixedly connected to the curved handle (13) corresponding to the movable clamp (4).

2. The capacitor bushing assembly fixture according to claim 1, characterized in that: The fixed clamping plate (3) and the movable clamping plate (4) are both provided with mounting grooves (5); a quick-release slider (6) is fixedly connected in the mounting groove (5); and an anti-slip plate (7) is fixedly connected to the arc surface of the quick-release slider (6).

3. The capacitor bushing assembly fixture according to claim 2, characterized in that: A plane clamp (8) is inserted into the installation groove (5).

4. The capacitor bushing assembly fixture according to claim 3, characterized in that: The plane clamp (8) is provided with a hidden groove (9); a rotating plate (10) with a threaded shaft is threadedly connected to a hole in the hidden groove (9).

5. The capacitor bushing assembly fixture according to claim 4, characterized in that: A friction plate (11) is fixedly connected to the outer surface of the rotating plate (10).

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