A test device for glass insulator falling

Abstract

The present invention discloses a glass insulator falling test device, which is used in the field of power transmission insulation detection, and comprises a bracket, a fixing component and a vibration generating system; the bracket is provided with at least one set of fixing components, and the glass insulator string is connected to the bracket through the fixing components; the vibration generating system comprises a power device, an eccentric transmission mechanism connected to the power device and a frequency converter, and the eccentric transmission mechanism is connected to the fixing component. The present invention can simulate the falling situation of the anti-falling type glass insulator under different vibration conditions after the glass part of the anti-falling type glass insulator is broken, so as to test the anti-falling performance of the anti-falling type glass insulator.

Description

Technical Field

[0001] The invention relates to a test device for glass insulator falling, belonging to the field of power transmission insulation detection. Background Art

[0002] Tempered glass insulators are one of the three major types of mainstream insulators currently used in power transmission lines. They have been widely used in overhead power transmission lines at home and abroad due to their high degree of automation in production, less influence of process factors, stable product quality, and tempered glass parts that do not age and have a long service life. In particular, they have the advantages of zero-value self-breakage, easy detection during line operation and maintenance, and high residual strength. However, during the operation of transmission lines, tempered glass insulators will self-break, and the broken tempered glass fragments will immediately scatter and fall to the ground from a high altitude, which may cause damage to crops, equipment facilities or buildings under the line, and may cause personal injury if there are people working or passing under the line. Therefore, a fall-proof glass insulator has been developed and has begun to be used on some domestic lines. This requires a device that can test the fall-proof performance of this glass insulator string in the case of broken glass parts in the laboratory. Summary of the invention

[0003] The invention provides a glass insulator falling test device, which can simulate the falling situation of the anti-falling glass insulator under different vibration conditions after the glass part of the anti-falling glass insulator is broken, so as to test the anti-falling performance of the glass insulator.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a test device for the falling of a glass insulator, comprising a bracket, a fixing component and a vibration generating system; at least one group of fixing components is arranged on the bracket, and the glass insulator string is connected to the bracket through the fixing component; the vibration generating system comprises a power device, an eccentric transmission mechanism connected to the power device and a frequency converter, and the eccentric transmission mechanism is connected to the fixing component.

[0005] Preferably, the fixing assembly includes a ratchet tensioner, a first wire clamp, a second wire clamp, a connecting hardware and a steel cable; one end of the steel cable passes through the bracket and is connected to the ratchet tensioner, and the other end is fixed to the bracket or connected to the eccentric transmission mechanism through the first wire clamp; the ratchet tensioner is located outside the bracket, and the second wire clamp is used in conjunction with the connecting hardware; the steel cable is provided with connecting hardware, and the connecting hardware includes an iron cap connecting hardware and a steel foot connecting hardware, and the iron cap connecting hardware and the steel foot connecting hardware are used to fix the glass insulator string.

[0006] Preferably, one group of the fixing components is arranged in the horizontal direction and one group is arranged in the vertical direction; the fixing components arranged in the vertical direction are fixed to the steel cables of the fixing components arranged in the horizontal direction through the third wire clamp; the steel cables of the fixing components arranged in the horizontal direction are fixed to the bracket through the first wire clamp.

[0007] Preferably, a group of the fixing components are arranged in the horizontal direction, and the steel cables of the fixing components arranged in the horizontal direction are fixed on the bracket through a first wire clamp.

[0008] Preferably, a group of the fixing components are arranged in the vertical direction, and the steel cables of the fixing components arranged in the vertical direction are connected to the eccentric transmission mechanism through a first wire clamp.

[0009] Preferably, a spring structure is provided in the main body of the iron cap connecting fitting.

[0010] Preferably, a protective component is provided at the connection between the steel cable and the eccentric transmission mechanism or at the connection between the steel cable in other fixed components.

[0011] Preferably, the protection assembly comprises a first limiting ring and a second limiting ring, and a cylindrical sheath is threadedly connected between the first limiting ring and the second limiting ring.

[0012] Preferably, the cylindrical sheath consists of two semicircular hollow cylinders.

[0013] Preferably, the protection component material is polyamide.

[0014] The present invention provides an eccentric transmission mechanism and a frequency converter so that the output vibration frequency and amplitude can be adjusted to adapt to the simulation of different external conditions; by changing the position of the fixed components provided on the bracket, the glass insulator string can be transformed into a string shape of various angles to simulate the working state of the glass insulator string. The present invention can test a variety of string shapes at the same time to improve the test efficiency.

[0015] The present invention removes the protection assembly by unscrewing the limit rings at both ends of the protection assembly, thereby making it very easy to replace the protection assembly. By replacing the nylon sheath, mutual wear between connecting parts can be avoided, thereby extending the service life of the device.

[0016] The iron cap connection fitting of the present invention is provided with a spring, so that the vibration output of the vibration generating system can be fully applied to the glass insulator string, thereby realizing continuous vibration of the glass insulator string without intermittent pauses. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of a glass insulator falling test device provided in Embodiment 1 of the present invention;

[0018] Figure 2 A schematic diagram of the structure of a glass insulator falling test device provided in the second embodiment of the present invention;

[0019] Figure 3A schematic diagram of the structure of a glass insulator falling test device provided in Embodiment 3 of the present invention;

[0020] Figure 4 A schematic diagram of the structure of a protection component in an embodiment of the present invention;

[0021] Figure 5 It is a cross-sectional view of the iron cap connection fitting in the embodiment of the present invention;

[0022] Figure 6 It is a cross-sectional view of the steel foot connection fitting in an embodiment of the present invention.

[0023] Wherein: 1-ratchet tensioner, 2-bracket, 3-first wire clamp, 4-iron cap connecting hardware, 41-iron cap connecting rod, 42-spring, 43-iron cap connecting hardware body, 44-first cotter pin, 45-first connecting steel cable shaft, 5-second wire clamp, 6-first steel cable, 7-second steel cable, 8-vibration generating system, 81-power device, 82-eccentric transmission mechanism, 83-frequency converter, 84-power switch box, 85-operating table, 9-anchor bolt, 10-concrete foundation, 11-glass insulator string, 12-protection component, 121-first limiting ring, 122-second limiting ring, 123-semicircular hollow cylindrical sheath, 13-third wire clamp, 14-steel foot connecting hardware, 141-steel foot connecting hardware body, 142-second cotter pin, 143-second connecting steel cable shaft. DETAILED DESCRIPTION

[0024] In order to better understand the essence of the present invention, the present invention is further described below in conjunction with specific embodiments and drawings.

[0025] The invention belongs to the field of power transmission insulation detection, and is particularly suitable for a drop performance test of an anti-drop type glass insulator after a glass piece is broken.

[0026] Embodiment 1

[0027] A glass insulator falling test device, the structure is as follows Figure 1 As shown, it includes a bracket 2, two sets of fixing components and a vibration generating system 8.

[0028] The bracket 2 is welded with channel steel and fixed on the concrete foundation 10 by anchor bolts 9, providing a firm and reliable installation frame for the components of the test device and the tested glass insulator string.

[0029] The fixing assembly is provided with one group in the horizontal direction and one group in the vertical direction. The fixing assembly includes a ratchet tensioner 1, a first wire clamp 3, a connecting hardware, a second wire clamp 5, a first steel cable 6 arranged in the horizontal direction, a second steel cable 7 and a third wire clamp 13 arranged in the vertical direction. The ratchet tensioner 1 is located outside the bracket 2, one end of the first steel cable 6 passes through the side wall of the bracket 2 and is connected to the ratchet tensioner 1, and the other end is fixed to the bracket 2 through the first wire clamp 3; one end of the second steel cable 7 passes through the top of the bracket 2 and is connected to another ratchet tensioner 1, and the other end is connected to the first steel cable 6 through the third wire clamp 13. The first steel cable 6 and the second steel cable 7 are twisted from carbon steel wires and are used for soft connections between connecting hardware, the bracket 2, the ratchet tensioner 1, etc. The first wire clamp 3, the second wire clamp 5 and the third wire clamp 13 are made of machined carbon steel, and consist of upper and lower wedge-shaped clamping blocks and bolts, and are used to clamp the steel cable joints to ensure the reliability of the connection between the steel cable and the connecting hardware, bracket 2, ratchet tensioner 1, etc.

[0030] The ratchet tensioner 1 is composed of a drum with a ratchet, a pawl, a rotating shaft, a handle and a mounting frame, etc. The ratchet tensioner 1 can be used for testing different numbers of glass insulator strings by cooperating with the first steel cable 6 and the second steel cable 7, and can adjust the tension value of the glass insulator string 5.

[0031] The connecting hardware includes an iron cap connecting hardware 4 and a steel leg connecting hardware 14. The connecting hardware is used in conjunction with the second wire clamp 5. The connecting hardware needs to determine different connection shapes and specifications according to the connection method and size of the iron cap and steel leg of the glass insulator. The iron cap connecting hardware 4 and the steel leg connecting hardware 14 are connected to the first steel cable 6 and the second steel cable 7 by a pin shaft, and the steel cable heads are pressed by the second wire clamp 5. An iron cap connecting hardware 4 and a steel leg connecting hardware 14 are respectively provided on the first steel cable 6 and the second steel cable 7. A glass insulator string 11 is fixed between the iron cap connecting hardware 4 and the steel leg connecting hardware 14 on the same steel cable. The connecting hardware is preferably alloy steel. The structure of the iron cap connecting hardware 4 is as shown in Figure 5 As shown, it includes an iron cap connecting rod 41, an iron cap connecting fitting body 43, a spring 42 arranged in the iron cap connecting fitting body 43, a first cotter pin 44 and a first connecting steel cable shaft 45. The spring 42 is added to the iron cap connecting fitting 4 to facilitate the vibration output of the vibration generating system to be fully applied to the glass insulator string, so as to achieve continuous vibration of the glass insulator string 11 without intermittent pauses. The structure of the steel foot connecting fitting 14 is as shown in FIG. Figure 6 As shown, it includes a steel foot connecting hardware body 141, a second cotter pin 142 and a second connecting steel cable shaft 143.

[0032] The fixing assembly realizes a soft connection between the glass insulator string 11 and the bracket 2 , which facilitates the vibration output of the vibration generating system 8 .

[0033] The vibration generating system 8 includes a power device 81, an eccentric transmission mechanism 82 and a frequency converter 83 connected to the power device 81. The eccentric transmission mechanism 82 is connected to the first steel cable 6, and the power device 81 is connected to the frequency converter 83. The vibration generating system 8 can adjust the output frequency of the frequency converter 83 and the eccentricity of the eccentric transmission mechanism 82, so that the frequency and amplitude of the vibration output can be adjusted to form different test conditions. The power device 81 adopts a motor, and the transmission of the eccentric transmission mechanism 82 adopts rolling bearings to reduce friction and wear during rotation. The vibration generating system 8 is also provided with a power switch box 84 and an operating table 85.

[0034] A protection component 12 is provided at the connection between the first steel cable 6 and the second steel cable 7, and a protection component 12 is provided at the connection between the eccentric transmission mechanism 82 and the first steel cable 6. The protection component 12 is as shown in FIG. Figure 4 As shown, it includes a first limiting ring 121, a second limiting ring 122, and a cylindrical sheath between the first limiting ring 121 and the second limiting ring 122. The cylindrical sheath is spliced ​​by two hollow semi-cylindrical sheaths 123. The size of the protection component 12 matches the size of the first steel cable 6 and the second steel cable 7. The inner rings of the first limiting ring 121 and the second limiting ring 122 are provided with internal threads, and the tops and bottoms of the two semi-cylindrical sheaths 123 are provided with external threads that match the first limiting ring 121 and the second limiting ring 122. When in use, the two semi-cylindrical sheaths 123 can be assembled into one by tightening the first limiting ring 121 and the second limiting ring 122, providing a wear-resistant buffer between the eccentric transmission mechanism 82 and the second steel cable 7, and between the first steel cable 6 and the second steel cable 7. When the semi-cylindrical sheath 123 is worn and needs to be replaced, it is only necessary to unscrew the first limiting ring 121 and the second limiting ring 122. The material of the protection component 12 is preferably polyamide.

[0035] Embodiment 2

[0036] A glass insulator falling test device, the structure is as follows Figure 2 As shown, it includes a bracket 2, a set of fixing components and a vibration generating system 8.

[0037] The bracket 2 is welded with channel steel and fixed on the concrete foundation 10 by anchor bolts 9, providing a firm and reliable installation frame for the components of the test device and the tested glass insulator string.

[0038] A group of fixing components are arranged in the horizontal direction. The fixing components include a ratchet tensioner 1, a first wire clamp 3, an iron cap connection hardware 4, a second wire clamp 5, a first steel cable 6 arranged in the horizontal direction, and a steel foot connection hardware 14. The ratchet tensioner 1 is located outside the bracket 2, one end of the first steel cable 6 passes through the side wall of the bracket 2 and is connected to the ratchet tensioner 1, and the other end is fixed to the bracket 2 through the first wire clamp 3.

[0039] The ratchet tensioner 1 is composed of a drum with a ratchet, a pawl, a rotating shaft, a handle and a mounting frame, etc. The ratchet tensioner 1 can be used for testing different numbers of glass insulator strings by cooperating with the first steel cable 6, and can adjust the tension value of the glass insulator string 5.

[0040] The connection fitting is used in conjunction with the second wire clamp 5. The connection fittings need to determine different connection shapes and specifications according to the connection method and size of the iron cap and steel leg of the glass insulator. The iron cap connection fitting 4 and the steel leg connection fitting 14 are connected to the first steel cable 6 by a pin and cable threading method, and the second wire clamp 5 is used to press the steel cable head. An iron cap connection fitting 4 and a steel leg connection fitting 14 are provided on the first steel cable 6. A glass insulator string 11 is fixed between the iron cap connection fitting 4 and the steel leg connection fitting 14.

[0041] The fixing assembly realizes a soft connection between the glass insulator string 11 and the bracket 2 , which facilitates the vibration output of the vibration generating system 8 .

[0042] The vibration generating system 8 includes a power device 81, an eccentric transmission mechanism 82 and a frequency converter 83 connected to the power device 81. The eccentric transmission mechanism 82 is connected to the first steel cable 6, and the power device 81 is connected to the frequency converter 83. The vibration generating system 8 can adjust the frequency output of the frequency converter 83 and the eccentricity of the eccentric transmission mechanism 82, so that the frequency and amplitude of the vibration output can be adjusted to form different test conditions. The power device 81 adopts a motor, and the transmission of the eccentric transmission mechanism 82 adopts rolling bearings to reduce friction and wear during rotation. The vibration generating system 8 is also provided with a power switch box 84 and an operating table 85.

[0043] A protection component 12 is provided at the connection between the eccentric transmission mechanism 82 and the first steel cable 6 .

[0044] Embodiment 3

[0045] A glass insulator falling test device, the structure is as follows Figure 3 As shown, it includes a bracket 2, a set of fixing components and a vibration generating system 8.

[0046] The bracket 2 is welded with channel steel and fixed on the concrete foundation 10 by anchor bolts 9, providing a firm and reliable installation frame for the components of the test device and the tested glass insulator string.

[0047] The fixing assembly is provided with a group in the vertical direction. The fixing assembly includes a ratchet tensioner 1, a first wire clamp 3, a connecting hardware, a second wire clamp 5, and a second steel cable 7 provided in the vertical direction. The ratchet tensioner 1 is located outside the bracket 2, one end of the second steel cable 7 passes through the side wall of the bracket 2 and is connected to the ratchet tensioner 1, and the other end is connected to the eccentric transmission mechanism 82 through the first wire clamp 3.

[0048] The ratchet tensioner 1 is composed of a drum with a ratchet, a pawl, a rotating shaft, a handle and a mounting frame, etc. The ratchet tensioner 1 can be used for testing different numbers of glass insulator strings by cooperating with the second steel cable 7, and can adjust the tension value of the glass insulator string 5.

[0049] The connecting hardware includes an iron cap connecting hardware 4 and a steel leg connecting hardware 14. The connecting hardware 4 is used in conjunction with the second wire clamp 5. The connecting hardware needs to determine different connection shapes and specifications according to the connection method and size of the iron cap and steel leg of the glass insulator. The iron cap connecting hardware 4 and the steel leg connecting hardware 14 are connected to the second steel cable 7 by a pin and cable threading method, and the steel cable head is pressed by the second wire clamp 5. An iron cap connecting hardware 4 and a steel leg connecting hardware 14 are provided on the second steel cable 7. A glass insulator string 11 is fixed between the iron cap connecting hardware 4 and the steel leg connecting hardware 14.

[0050] The fixing assembly realizes a soft connection between the glass insulator string 11 and the bracket 2 , which facilitates the vibration output of the vibration generating system 8 .

[0051] The vibration generating system 8 includes a power device 81, an eccentric transmission mechanism 82 and a frequency converter 83 connected to the power device 81. The eccentric transmission mechanism 82 is connected to the second steel cable 7, and the power device 81 is connected to the frequency converter 83. The vibration generating system 8 can adjust the frequency output of the frequency converter 83 and the eccentricity of the eccentric transmission mechanism 82, so that the frequency and amplitude of the vibration output can be adjusted to form different test conditions. The power device 81 adopts a motor, and the transmission of the eccentric transmission mechanism 82 adopts rolling bearings to reduce friction and wear during rotation. The vibration generating system 8 is also provided with a power switch box 84 and an operating table 85.

[0052] A protection component 12 is provided at the connection between the eccentric transmission mechanism 82 and the second steel cable 7 .

[0053] The present invention can form a glass insulator string into working states of various angles by changing the position of the first wire clamp of the vertical or horizontal fixing assembly on the bracket, and is suitable for simultaneous testing of multiple strings.

[0054] It should be noted that although the present invention is described by the above embodiments, the present invention may also have other various embodiments. Without departing from the spirit and scope of the present invention, it is obvious that those skilled in the art may make various corresponding changes and deformations to the present invention, but these changes and deformations should all fall within the scope of protection of the appended claims of the present invention and their equivalents.

Claims

1. A glass insulator falling test device, characterized in that: It includes a bracket, a fixing assembly and a vibration generating system; the bracket is provided with at least one set of fixing assemblies, and the glass insulator string is connected to the bracket through the fixing assemblies; the vibration generating system includes a power device, an eccentric transmission mechanism connected to the power device and a frequency converter, and the eccentric transmission mechanism is connected to the fixing assembly; The fixing assembly includes a ratchet tensioner, a first wire clamp, a second wire clamp, a connecting hardware and a steel cable; one end of the steel cable passes through the bracket and is connected to the ratchet tensioner, and the other end is fixed to the bracket or to the eccentric transmission mechanism through the first wire clamp; the ratchet tensioner is located outside the bracket, the second wire clamp is used in conjunction with the connecting hardware, and the second wire clamp presses the steel cable head; the connecting hardware includes an iron cap connecting hardware and a steel foot connecting hardware, and the iron cap connecting hardware and the steel foot connecting hardware are used to fix the glass insulator string; By changing the position of the first wire clamp of the fixing assembly on the bracket, the glass insulator string can be formed into a working state of various angles; A spring is arranged in the main body of the iron cap connecting hardware. The iron cap connecting hardware comprises an iron cap connecting rod, an iron cap connecting hardware main body, a first cotter pin, a first connecting steel cable shaft and a spring.

2. The glass insulator falling test device according to claim 1, characterized in that: The fixing components are arranged in one group in the horizontal direction and in one group in the vertical direction; the fixing components arranged in the vertical direction are fixed to the steel cables of the fixing components arranged in the horizontal direction through the third wire clamp; the steel cables of the fixing components arranged in the horizontal direction are fixed to the bracket through the first wire clamp.

3. The glass insulator falling test device according to claim 1, characterized in that: The fixing components are arranged in a group in the horizontal direction, and the steel cables of the fixing components arranged in the horizontal direction are fixed on the bracket through the first wire clamp.

4. The glass insulator falling test device according to claim 1, characterized in that: The fixing components are arranged in a group in the vertical direction, and the steel cables of the fixing components arranged in the vertical direction are connected to the eccentric transmission mechanism through a first wire clamp.

5. The glass insulator falling test device according to claim 1, characterized in that: A protection component is provided at the connection between the steel cable and the eccentric transmission mechanism or at the connection between the steel cable and the steel cable in other fixing components.

6. The glass insulator falling test device according to claim 5, characterized in that: The protection assembly comprises a first limiting ring and a second limiting ring, and a cylindrical sheath is connected between the first limiting ring and the second limiting ring through threads.

7. The glass insulator falling test device according to claim 6, characterized in that: The cylindrical sheath is composed of two hollow semi-cylindrical sheaths.

8. The glass insulator falling test device according to any one of claims 5 to 7, characterized in that: The material of the protection component is polyamide.

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