Protective device for high-voltage test instrument

Abstract

The utility model provides a high-voltage test instrument protection device. The high-voltage test instrument protection device comprises a test instrument body, a protection box and an annular connecting plate, elastic supporting columns are arranged at the four corners of the protection box; the connecting plate is connected with the top ends of the elastic supporting columns, a first safety gap is formed between the outer circumferential face of the connecting plate and the inner circumferential wall of the protection box, the test instrument body is embedded in the connecting plate, and a second safety gap is formed between the bottom of the test instrument body and the inner bottom wall of the protection box. According to the high-voltage test instrument protection device provided by the utility model, vibration transmission from the protection box to the test instrument body can be reduced by using the elastic supporting columns, so that the test instrument body is prevented from bearing rigid collision force, and the protection effect of the protection box on the test instrument body is improved; therefore, the vibration damage probability of a precision detection device in the tester body is reduced, and the service life of the high-voltage switch tester is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to electrical detection equipment technical field, concretely relates to a high pressure test instrument protection device. BACKGROUND

[0002] The high pressure test instrument includes high voltage switch test type instrument, mutual inductor test type instrument, resistance test type, line parameter test type instrument, transformer test type instrument and the like. Most of these instruments are cuboid structures in appearance, and have many high-precision detection devices inside. At present, the high pressure test instrument is directly placed in an openable engineering plastic box. Since the high pressure test environment is usually various complex and harsh environments, the high pressure test instrument is subjected to the bumping and vibration of the vehicle during transportation and transfer, and the transfer collision during daily use, which is directly transmitted to the test instrument through the box, thereby greatly increasing the probability of failure of the detection elements and affecting the service life of the high pressure test instrument. SUMMARY

[0003] The utility model embodiment provides a high pressure test instrument protection device, aims at improving the anti-vibration protection performance of the internal precision detection device of the high pressure test instrument.

[0004] To achieve the above object, the utility model adopts the technical scheme of providing a high pressure test instrument protection device, which comprises a test instrument body, a protection box, and a ring-shaped connecting plate. Four corner positions of the bottom of the protection box are respectively provided with an upwardly extending elastic support column. Each elastic support column has an elastic deformation freedom degree of axial extension and radial swinging. The connecting plate is connected to the top end of each elastic support column, and a first safety gap is formed between the outer peripheral surface of the connecting plate and the inner peripheral wall of the protection box. The test instrument body is embedded in the connecting plate, and a second safety gap is formed between the bottom of the test instrument body and the inner bottom wall of the protection box.

[0005] In one possible implementation, the elastic support column comprises a fixed column, a first spring, and a connecting column. The fixed column is fixedly connected to the bottom of the protection box. One end of the first spring is connected to the fixed column, and the other end extends upwardly and is connected to the connecting column. The connecting plate is lapped and supported on the connecting column and is detachably connected to the connecting column.

[0006] In some embodiments, the top end of the connecting column is provided with a ball head articulation seat for connecting the connecting plate.

[0007] For example, the top end of the connecting column has a first half column body. A second half column body is detachably connected to the first half column body. The second half column body is oppositely buckled to the first half column body, and the opposite side walls of the two half column bodies are respectively provided with a hemispherical groove. The two hemispherical grooves together form a spherical groove. The articulation head of the ball head articulation seat is rotatably embedded in the spherical groove.

[0008] For example, the bottom surface of the connecting plate is provided with a ring sleeve extending downward and adapted to be sleeved with the body of the test instrument, and a plurality of second springs are distributed along the circumference of the ring sleeve, each of which is connected with the inner circumferential wall of the protective box.

[0009] In a possible implementation, a corrugated sealing ring for shielding the first safety gap is arranged between the connecting plate and the inner circumferential wall of the protective box, the outer edge of the corrugated sealing ring is in sealing contact with the inner circumferential wall of the protective box, and the inner edge of the corrugated sealing ring is in sealing contact with the connecting plate.

[0010] In some embodiments, the protective box is provided with a heat dissipation fan on at least one side wall.

[0011] For example, the protective box comprises a box body and an openable box cover, the upper surface of the connecting plate is lower than the top end of the box body, and the surface of the box cover facing the box body is provided with a containing box.

[0012] The high-voltage test instrument protection device has the advantages that, compared with the prior art, the high-voltage test instrument protection device is provided with four elastic support columns arranged at four corners of the protective box, the connecting plate is arranged around the four elastic support columns, the body of the test instrument is embedded on the connecting plate, the elastic support columns have the freedom of axial expansion and radial swing based on the elastic deformation performance of the elastic support columns, the body of the test instrument can form a floating connection state based on the first safety gap and the second safety gap in the protective box, when the protective box is subjected to external impact or jolt vibration during transportation, the elastic support columns can be used to reduce the vibration transmission of the protective box to the body of the test instrument, thereby avoiding that the body of the test instrument bears a rigid impact force, improving the protection effect of the protective box on the body of the test instrument, further reducing the vibration damage probability of the internal precision detection device of the body of the test instrument, and prolonging the service life of the high-voltage switch tester. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 A perspective structure schematic diagram of the high-voltage switch tester provided by the utility model embodiment is shown in the figure.

[0014] Figure 2 A cross-sectional structure schematic diagram of the high-voltage switch tester provided by the utility model embodiment is shown in the figure.

[0015] Figure 3 A perspective structure schematic diagram of the connecting plate used by the utility model embodiment is shown in the figure.

[0016] Figure 4 An explosion structure schematic diagram of the elastic support column used by the utility model embodiment is shown in the figure.

[0017] Figure 5 A cross-sectional structure schematic diagram of the corrugated sealing ring used by the utility model embodiment is shown in the figure.

[0018] In the figure: 10, test instrument body; 20, protective box; 21, box body; 22, box cover; 221, containing box; 30, connecting plate; 31, ring sleeve; 32, second spring; 40, elastic support column; 41, fixed column; 42, first spring; 43, connecting column; 431, first half column; 432, second half column; 433, semispherical groove; 44, ball head articulated seat; 50, first safety gap; 60, second safety gap; 70, corrugated sealing ring; 80, heat dissipation fan. DETAILED DESCRIPTION

[0019] In order to make the technical problems, technical schemes and beneficial effects of the utility model clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and do not limit the utility model.

[0020] It should be noted that when an element is referred to as being "disposed on", "connected to" another element, it can be directly on the other element or indirectly on the other element. It should be understood that the terms "upper", "lower", "front", "back", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. The terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0021] Please see Figures 1 to 5 , now the high-voltage test instrument protection device provided by the utility model will be described. The high-voltage test instrument protection device comprises a test instrument body 10, a protective box 20, and a ring-shaped connecting plate 30; the protective box 20 is provided with an upwardly extending elastic support column 40 at each of the four corner positions of the bottom, each elastic support column 40 has an elastic deformation freedom degree of stretching along the respective axial direction and swinging in the radial direction; the connecting plate 30 is connected to the top end of each elastic support column 40, and the outer circumferential surface of the connecting plate 30 has a first safety gap 50 with the inner circumferential wall of the protective box 20, the test instrument body 10 is embedded in the connecting plate 30, and the bottom of the test instrument body 10 has a second safety gap 60 with the inner bottom wall of the protective box 20.

[0022] It should be understood that the elastic support column 40 can be specifically understood as a column-shaped member with at least one cylindrical spring, which realizes axial expansion and contraction by using the compression and stretching characteristics of the cylindrical spring, and also realizes radial swinging by bending deformation of the cylindrical spring in the radial direction (any direction in the circumferential direction), so that the elastic support column 40 has the buffering effect of the spring. When the protective box 20 is subjected to a collision, the collision energy is first transmitted to the elastic support column 40, and the collision energy is buffered and weakened on the elastic support column 40, and then reaches the test instrument body 10. The energy of the test instrument body 10 is very small, and the collision energy of the test instrument body 10 has changed from the rigid collision acting on the protective box 20 to the flexible energy, so that the test instrument body 10 only produces slight flexible swinging and will not be subjected to rigid impact force. Therefore, the precise detection device inside the test instrument body 10 has good anti-vibration protection performance.

[0023] Compared with the prior art, the high-voltage test instrument protection device provided by the embodiment is characterized in that one elastic support column 40 is arranged at each of the four corner positions of the protective box 20, and the annular connecting plate 30 is jointly installed, and the test instrument body 10 is embedded on the connecting plate 30. Since the elastic support column 40 has the freedom of axial expansion and contraction and radial swinging based on the elastic deformation performance thereof, the test instrument body 10 can form a floating connection state in the protective box 20 based on the first safety gap 50 and the second safety gap 60. When the protective box 20 is subjected to external impact or vibration during transportation, the elastic support column 40 can be used to reduce the vibration transmission of the protective box 20 to the test instrument body 10, so as to avoid that the test instrument body 10 bears the rigid collision force, improve the protection effect of the protective box 20 on the test instrument body 10, and further reduce the vibration damage probability of the precise detection device inside the test instrument body 10, and improve the service life of the high-voltage switch tester.

[0024] As a specific embodiment of the elastic support column 40, please refer to Figures 2 to 4 The elastic support column 40 includes a fixed column 41, a first spring 42, and a connecting column 43. The fixed column 41 is fixedly connected to the bottom wall of the protective box 20. One end of the first spring 42 is connected to the fixed column 41, and the other end extends upward and is connected to the connecting column 43. The connecting plate 30 is overlapped and supported on the connecting column 43 and is detachably connected to the connecting column 43.

[0025] The fixed column 41 can be integrally formed at the corner position of the inner bottom wall of the protective box 20, or can be fixedly connected to the bottom wall of the protective box 20 by fasteners such as bolts. Both ends of the first spring 42 are welded with studs. The stud at one end is screwed and fixed with the fixed column 41, and the stud at the other end is used for screwing and fixing the connecting column 43. Thus, the first spring 42 located between the fixed column 41 and the connecting column 43 buffers the collision vibration energy, and the structure is simple and stable.

[0026] In some embodiments, referring to Figure 4 , the top end of the connecting column 43 is provided with a ball joint seat 44 for connecting the connecting plate 30. When the collision energy received by the protective box 20 is transmitted to the first spring 42 through the fixing column 41 to cause the first spring 42 to swing radially, the ball joint seat 44 can always keep the state of being axially perpendicular to the connecting plate 30 by using the free swing between the ball joint seat 44 and the connecting column 43, thereby avoiding the connecting plate 30 from being bent and twisted under force, and improving the structural stability.

[0027] Specifically, as Figure 4 shown, the top end of the connecting column 43 has a first half column 431, and a second half column 432 is detachably connected to the first half column 431. The second half column 432 is oppositely buckled with the first half column 431, and the opposite side walls of the two are respectively provided with a hemispherical groove 433, and the two hemispherical grooves 433 together form a spherical groove; the hinge joint of the ball joint seat 44 is rotatably embedded in the spherical groove. The second half column 432 and the first half column 431 can be screwed and fixed by fasteners. By detaching the second half column 432, the hinge joint of the ball joint seat 44 can be embedded in one of the hemispherical grooves 433, and then the second half column 432 is buckled and fixed on the first half column 431, so that the two hemispherical grooves 433 form a complete spherical groove, and the hinge joint of the ball joint seat 44 can freely swing in the spherical groove. The structure is simple, stable and convenient to disassemble and assemble.

[0028] In some possible implementations, referring to Figure 2 and Figure 3 , the bottom surface of the connecting plate 30 is provided with a ring sleeve 31 extending downward and suitable for sleeving the test instrument body 10. The ring sleeve 31 is spacedly provided with a plurality of second springs 32 along the circumference thereof, and each second spring 32 is connected with the inner circumferential wall of the protective box 20. By providing the ring sleeve 31, the area acting on the circumferential wall of the test instrument body 10 can be increased, thereby improving the connection stability of the test instrument body 10 and avoiding damage of the test instrument body 10 due to local stress concentration on the outer circumference. On this basis, the ring sleeve 31 is elastically supported by the plurality of second springs 32, so that the connecting plate 30 can avoid rigidly colliding with the inner wall of the protective box 20 due to excessive swing, and the buffering and protection effect is improved.

[0029] It should be noted that, referring to Figure 2 and Figure 5The first safety gap 50 is shielded by a corrugated sealing ring 70 between the connecting plate 30 and the inner circumferential wall of the protective box 20, the outer edge of the corrugated sealing ring 70 is sealed with the inner circumferential wall of the protective box 20, and the inner edge of the corrugated sealing ring 70 is sealed with the connecting plate 30. By arranging the corrugated sealing ring 70, on the one hand, the first safety gap 50 can be shielded to prevent debris from falling into the first safety gap 50, and on the other hand, the corrugated sealing ring 70 has good stretchability, so that the corrugated sealing ring 70 is not torn and damaged during the floating of the test instrument body 10.

[0030] In order to meet the heat dissipation requirement of the test instrument body 10 during normal testing, the test instrument body 10 is prevented from overheating to affect the testing accuracy, and the test instrument body 10 is prevented from being damaged by the heat generated by the test instrument body 10 itself. Figure 1 As shown in FIG. 8, at least one side wall of the protective box 20 is provided with a heat dissipation fan 80.

[0031] Please refer to Figure 1 and Figure 2 The protective box 20 includes a box body 21 and an openable box cover 22, the upper surface of the connecting plate 30 is lower than the top end of the box body 21, and the surface of the box cover 22 facing the box body 21 is provided with a containing box 221. The upper surface of the connecting plate 30 is lower than the top end of the box body 21, which can prevent the test instrument body 10 from colliding with the box cover 22, and the test instrument body 10 can be exposed by opening the box cover 22 during use, and the test instrument body 10 can be prevented from being exposed after the box cover 22 is closed, and the containing box 221 arranged on the inner side of the box cover 22 can be used to store the power supply line, signal line and other peripheral components of the test instrument body 10, thereby improving the use convenience.

[0032] The above only describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A high voltage test apparatus guard, characterized by, The utility model provides experimental apparatus body, protection box and annular connecting plate, the bottom of protection box is equipped with an elastic support column that extends upwards respectively in four corner positions, each elastic support column has the elastic deformation freedom of axial extension and radial swing, the top of each elastic support column is connected with connecting plate, and the outer circumferential surface of connecting plate and the inner circumferential wall of protection box have first safety gap, and the bottom of experimental apparatus body is embedded in connecting plate, and the inner bottom wall of protection box has second safety gap.

2. The high voltage test apparatus guard of claim 1, wherein, The elastic support column includes a fixed column, a first spring, and a connecting column. The fixed column is fixedly connected to the bottom of the protection box. One end of the first spring is connected to the fixed column, and the other end extends upward and is connected to the connecting column. The connecting plate is lapped and supported on the connecting column and is detachably connected to the connecting column.

3. The high voltage test apparatus guard of claim 2, wherein, The top end of the connecting column is provided with a ball head articulation seat for connecting the connecting plate.

4. The high voltage test apparatus guard of claim 3, wherein, The top end of the connecting column has a first half column body. A second half column body is detachably connected to the first half column body. The second half column body is oppositely buckled to the first half column body. Opposite side walls of the two half column bodies are respectively provided with half-sphere grooves, and the two half-sphere grooves together form a spherical groove. The articulation head of the ball head articulation seat is rotatably embedded in the spherical groove.

5. The high voltage test apparatus guard of claim 1, wherein, The bottom surface of the connecting plate is provided with a ring sleeve that extends downward and is suitable for sleeving the experimental apparatus body. A plurality of second springs are spaced apart along the circumference of the ring sleeve. Each second spring is connected to the inner circumferential wall of the protection box.

6. The high voltage test apparatus guard of claim 1, wherein, A corrugated sealing ring is provided between the connecting plate and the inner circumferential wall of the protection box for shielding the first safety gap. The outer edge of the corrugated sealing ring is sealed with the inner circumferential wall of the protection box. The inner edge of the corrugated sealing ring is lapped and sealed with the connecting plate.

7. The high voltage test apparatus guard of claim 1, wherein, At least one side wall of the protection box is provided with a cooling fan.

8. The high voltage test apparatus guard of any one of claims 1-7, wherein, The protection box includes a box body and an openable box cover. The upper surface of the connecting plate is lower than the top end of the box body. The surface of the box cover facing the box body is provided with a containing box.

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