Porcelain insulator ring direction detection device

Abstract

The application provides a porcelain insulator circumferential detection device, which comprises a fixed base, a rotating base, a driving assembly and a detection assembly; the fixed base and the rotating base are both in the shape of a circular arc; the rotating base comprises an arc-shaped guide rail; a gear ring extending along the circular arc shape of the guide rail is arranged on the top of the guide rail; a plurality of side pulleys are arranged on the sidewall of the guide rail; a first mounting groove extending along the circular arc shape of the fixed base is arranged on the surface of the fixed base, and a plurality of lower pulleys are arranged in the first mounting groove; the lower pulleys are in contact with the guide rail, and the side pulleys are in contact with the outer sidewall of the fixed base; the driving assembly can drive the gear ring to drive the guide rail to rotate coaxially on the surface of the fixed base; the bottom end of the guide rail is provided with the detection assembly for detecting the porcelain insulator; the detection assembly comprises a detection probe and a probe base; the detection probe is mounted on the probe base; the probe base can adjust the contact posture of the detection probe and the surface of the porcelain insulator.

Description

Technical Field

[0001] This invention relates to the field of testing devices, and more specifically, to a circumferential testing device for porcelain insulators. Background Technology

[0002] With increasingly stringent requirements for the operational quality of power equipment, it is necessary to conduct circumferential crack detection on the surface of porcelain insulators to determine whether there are any potential quality and safety hazards. This necessitates a 360-degree all-around inspection of the porcelain insulator surface to ensure that all cracks are detected. In related technologies, porcelain insulators can be cylindrical in shape. However, manually using inspection equipment to perform circumferential crack detection around a cylindrical porcelain insulator from all angles presents problems such as a large workload, the potential for missing areas of the porcelain insulator surface during inspection, and unsatisfactory inspection quality. Summary of the Invention

[0003] In view of this, the present invention provides a circumferential detection device for porcelain insulators to solve the above problems.

[0004] This invention provides a circumferential testing device for porcelain insulators, comprising: a fixed base, a rotating base, a driving assembly, and a testing assembly; both the fixed base and the rotating base are arc-shaped. The rotating base includes: an arc-shaped guide rail; a toothed ring extending along the arc shape of the guide rail at the top; and several side pulleys on the side wall of the guide rail. The surface of the fixed base is provided with a first mounting groove extending along the arc shape of the fixed base. Several sliding wheels are provided in the first mounting groove. The sliding wheels contact the guide rail, and the side sliding wheels contact the outer wall of the fixed base. The drive assembly can drive the gear ring to drive the guide rail to rotate coaxially on the surface of the fixed base. The fixed base is provided with at least two symmetrically arranged push rod assemblies; the push rod assembly includes: an electric linear push rod with its rod head extending in the direction of the center of the fixed base; the rod head of the electric linear push rod is connected to the top plate; The fixed base is equipped with a laser marker that can project a crosshair towards the center of the fixed base and an upper camera that can observe the crosshair. The bottom of the guide rail is equipped with a detection assembly for detecting the target object. The detection assembly includes: a detection probe, a probe base, a clean water nozzle for spraying water onto the porcelain insulator, and a coupling agent nozzle for spraying coupling agent onto the porcelain insulator; the detection probe is mounted on the probe base; the probe base can adjust the contact posture between the detection probe and the surface of the porcelain insulator.

[0005] According to an embodiment of the present invention, the probe base includes: an adjusting plate and a fixing block; a thrust roller bearing is provided on the fixing block; an adjusting plate bolt passes through the adjusting plate, the thrust roller bearing and a slotted nut in sequence and is fixedly connected to the adjusting plate and the fixing block as a whole; a U-shaped block is provided on the fixing block and a deep groove ball bearing is provided between the fixing block and the U-shaped block; a lower pressure plate is provided above the fixing block and an upper cover is provided above the lower pressure plate, the upper cover and the lower pressure plate are fixedly connected as a whole, and the detection probe is fixedly disposed between the upper cover and the lower pressure plate; a pin is provided on the side wall of the upper cover, the free end of the pin passes through the bushing and is disposed on the deep groove ball bearing, so that the upper cover can rotate; a fixing block spring is provided between the fixing block and the lower pressure plate.

[0006] According to an embodiment of the present invention, the detection assembly further includes a detection base; the detection base is fixedly connected to a guide rail; the detection base is provided with a detection assembly motor and a lead screw moving mechanism, the probe base is fixedly connected to the lead screw nut of the lead screw moving mechanism, and the detection assembly motor drives the lead screw of the lead screw moving mechanism to rotate, so that the detection probe can extend and retract along the contact direction between the detection base and the porcelain insulator.

[0007] According to an embodiment of the present invention, the push rod assembly is connected to the fixed base via a position adjustment mechanism, which can adjust the setting position of the push rod assembly in the radial direction of the fixed base.

[0008] According to an embodiment of the present invention, the position adjustment mechanism includes: a hinged fixed base, an L-shaped fixed plate, and a slide rail; the slide rail is fixedly connected to the fixed base, the L-shaped fixed plate is fixedly connected to the slider of the slide rail, the electric linear actuator is detachably fixedly connected to the L-shaped fixed plate, and the bottom of the electric linear actuator is detachably fixedly connected to the fixed base through the hinged fixed base.

[0009] According to an embodiment of the present invention, a scale plate is provided on the fixed base, and a scale plate pointer is provided at the bottom of the electric linear actuator; the scale plate pointer is used to cooperate with the scale plate to indicate the setting position of the electric linear actuator in the radial direction of the fixed base.

[0010] According to an embodiment of the present invention, a linear bearing is provided on the free end of the top plate, and a bolt passes through the linear bearing and is fixedly connected to a pressure block disposed on the outside of the free end of the top plate; a spring is provided between the top plate and the pressure block; a proximity sensor is provided on the free end of the top plate, and the proximity sensor is used to detect the relative distance between the top plate and the pressure block.

[0011] According to an embodiment of the present invention, the rod head of the electric linear actuator is fixedly connected to the top plate via an extended shaft.

[0012] According to an embodiment of the present invention, the extended shaft is fixedly connected to the top plate by screws.

[0013] According to an embodiment of the present invention, a second mounting groove is provided on the side wall of the guide rail, extending along the arc shape of the guide rail, and all side pulleys are equidistantly arranged in the second mounting groove.

[0014] According to an embodiment of the present invention, the top of the fixed base is provided with a plurality of limiting wheels that can limit the axial displacement of the gear ring.

[0015] According to an embodiment of the present invention, the fixed base is provided with an electromagnetic lock for limiting the rotation of the guide rail.

[0016] According to embodiments of the present invention, a circumferential inspection device for porcelain insulators is provided. A driving assembly drives a rotating base to rotate coaxially on a fixed base. Combined with an inspection assembly mounted on the rotating base, a 360-degree circumferential inspection of a porcelain insulator located at the center of the rotating base can be performed to fully detect potential cracks on the surface of the porcelain insulator, thereby improving the quality and safety of power equipment operation. Furthermore, the inspection probe of the inspection assembly is mounted on a probe base, which can adjust the contact posture between the inspection probe and the surface of the porcelain insulator to improve the inspection quality of the porcelain insulator surface. Attached Figure Description

[0017] The above and other objects, features and advantages of the present invention will become more apparent from the following description of embodiments of the invention with reference to the accompanying drawings, in which: Figure 1 The schematic diagram illustrates the structure of a circumferential detection device for porcelain insulators according to an embodiment of the present invention.

[0018] Figure 2 The schematic diagram illustrates the structure of the rotating base of the circumferential detection device for porcelain insulators according to an embodiment of the present invention.

[0019] Figure 3 The schematic diagram illustrates the structure of the fixed base and rotating base of the circumferential detection device for porcelain insulators according to an embodiment of the present invention.

[0020] Figure 4 The schematic diagram illustrates the structure of the push rod assembly of the circumferential detection device for porcelain insulators according to an embodiment of the present invention.

[0021] Figure 5 The schematic diagram illustrates the structure of the detection component of the circumferential detection device for porcelain insulators according to an embodiment of the present invention.

[0022] Figure 6 The schematic diagram illustrates the probe base structure of the circumferential detection device for porcelain insulators according to an embodiment of the present invention.

[0023] Explanation of reference numerals in the attached figures: 1-Fixed base; 11-Limiting wheel; 2-Rotating base; 21-Gear ring; 22-Side pulley; 23-Guide rail; 24-Lower pulley; 25-First mounting slot; 3-Drive assembly; 4-Push rod assembly; 41-Linear bearing; 42-Proximity sensor; 43-Top plate; 44-Spring; 45-Bolt; 46-Pressure block; 47-Screw; 48-Extended shaft; 49-Electric linear push rod; 50-Hinged fixed base; 51-Scale pointer; 52-L-shaped fixed plate; 53-Slide rail; 5-Laser marker; 6 61-Upper camera; 7-Lower camera; 8-Electromagnetic lock; 9-Detection component; 10-Detection probe; 11-Probe base; 12-U-shaped block; 13-Deep groove ball bearing; 14-Fixing block; 15-Slotted nut; 26-Thrust roller bearing; 27-Adjusting plate bolt; 28-Fixing block spring; 29-Upper cover; 20-Shaft sleeve; 20-Lower pressure plate; 21-Adjusting plate; 22-Clean water nozzle; 33-Screw moving mechanism; 44-Detection component motor; 55-Coupled nozzle. Detailed Implementation

[0024] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the invention. In the following detailed description, numerous specific details are set forth to provide a thorough understanding of the embodiments of the invention for ease of explanation. However, it will be apparent that one or more embodiments may be practiced without these specific details. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0025] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The terms “comprising,” “including,” etc., as used herein indicate the presence of features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0026] All terms used herein (including technical and scientific terms) have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein are to be interpreted in a manner consistent with the context of this specification, and not in an idealized or overly rigid way.

[0027] When using expressions such as "at least one of A, B and C", they should generally be interpreted in accordance with the meaning that is commonly understood by those skilled in the art (e.g., "a system having at least one of A, B and C" should include, but is not limited to, a system having A alone, a system having B alone, a system having C alone, a system having A and B, a system having A and C, a system having B and C, and / or a system having A, B and C, etc.).

[0028] According to embodiments of the present invention, such as Figures 1 to 6 As shown, a circumferential testing device for porcelain insulators includes: a fixed base 1, a rotating base 2, a driving assembly 3, and a testing assembly 8; both the fixed base 1 and the rotating base 2 are arc-shaped. The rotating base 2 includes: an arc-shaped guide rail 23; a toothed ring 21 extending along the arc shape of the guide rail 23 is provided on the top of the guide rail 23; and a number of side pulleys 22 are provided on the side wall of the guide rail 23. The surface of the fixed base 1 is provided with a first mounting groove 25 extending along the arc shape of the fixed base 1. A plurality of sliding wheels 24 are provided in the first mounting groove 25. The sliding wheels 24 are in contact with the guide rail 23, and the side pulleys 22 are in contact with the outer side wall of the fixed base 1. The drive assembly 3 can drive the gear ring 21 to drive the guide rail 23 to rotate coaxially on the surface of the fixed base 1. The fixed base 1 is provided with at least two symmetrically arranged push rod assemblies 4; the push rod assembly 4 includes: an electric linear push rod 49 with its rod head extending in the direction of the center of the fixed base 1; the rod head of the electric linear push rod 49 is connected to the top plate 43; The fixed base 1 is equipped with a laser marker 5 that can illuminate a crosshair towards the center of the fixed base 1 and an upper camera 6 that can observe the crosshair; the bottom of the guide rail 23 is equipped with a detection component 8 for detecting the target object.

[0029] The bottom end of the guide rail 23 is provided with a detection component 8 for detecting the target object; the detection component 8 includes: a detection probe 81, a probe base 82, a clean water nozzle 83 for spraying water onto the porcelain insulator, and a coupling agent nozzle 86 for spraying coupling agent onto the porcelain insulator; the detection probe 81 is mounted on the probe base 82; the probe base 82 can adjust the contact posture between the detection probe 81 and the surface of the porcelain insulator.

[0030] For example, the water nozzle 83 that sprays water onto the porcelain insulator can spray water onto the surface of the porcelain insulator that needs to be tested to clean the dust and foreign objects on the surface of the porcelain insulator, so as to facilitate the subsequent testing of the porcelain insulator surface by the testing probe 81.

[0031] For example, the detection probe 81 may be an ultrasonic detection probe.

[0032] For example, the coupling agent nozzle 86 for spraying coupling agent onto the porcelain insulator can continuously spray coupling agent onto the surface of the porcelain insulator while the rotating base 2 rotates. The coupling agent can make the detection probe 81 fit seamlessly and without air on the detection surface of the porcelain insulator, thereby improving the detection effect of the detection probe 81.

[0033] like Figures 1 to 6As shown, in the practical application of this device, firstly, the fixed base 1 and the rotating base 2 are aligned so that the opening direction of the arc-shaped fixed base 1 and the rotating base 2 coincides, and the internal space of the rotating base 2 is open. At this time, the cylindrical porcelain insulator enters the interior of the rotating base 2 from the opening direction. The upper camera 6 is used for observation, and the center position of the porcelain insulator is aligned with the crosshair of the laser marker 5. Further, the rod heads of the two electric linear push rods 49 of the symmetrically arranged push rod assembly 4 extend a distance matching the known diameter of the cylindrical porcelain insulator. Further, the cylindrical porcelain insulator moves to contact all the top plates 43, at which point the cylindrical porcelain insulator is positioned at the center of the rotating base 2. The control drive assembly 3 drives the gear ring 21 to drive the guide rail 23 to rotate coaxially on the surface of the fixed base 1. At this time, the detection assembly installed at the bottom of the guide rail 23 can perform 360-degree circumferential detection on the cylindrical porcelain insulator.

[0034] According to an embodiment of the present invention, a laser marker 5 that illuminates a crosshair towards the center of the fixed base 1, an upper camera 6 capable of observing the crosshair, and a push rod assembly 4 arranged symmetrically are used to accurately place the cylindrical porcelain insulator at the center position of the rotating base 2. Furthermore, the rotating base 2 is driven to rotate coaxially on the fixed base 1 by the driving assembly 3. With the cooperation of the detection assembly mounted on the rotating base 2, a 360-degree circumferential detection can be performed on the cylindrical porcelain insulator located at the center position of the rotating base 2. This method features fast detection speed, comprehensive and complete detection area, and the ability to mount various types of detection assemblies.

[0035] According to embodiments of the present invention, such as Figure 5 and Figure 6 As shown, the probe base 82 includes: an adjusting plate 831 and a fixing block 823; a thrust roller bearing 825 is provided on the fixing block 823; an adjusting plate bolt 826 passes through the adjusting plate 831 and the thrust roller bearing 825 in sequence and is fixedly connected to the slotted nut 824, so that the adjusting plate 831 and the fixing block 823 are connected as one unit; a U-shaped block 821 is provided on the fixing block 823, and a deep groove ball bearing 822 is provided between the fixing block 823 and the U-shaped block 821; the fixing block A lower pressure plate 830 is provided above 823, and an upper cover 828 is provided above the lower pressure plate 830. The upper cover 828 and the lower pressure plate 830 are fixedly connected as one unit. The detection probe 81 is fixedly installed between the upper cover 828 and the lower pressure plate 830. A pin is provided on the side wall of the upper cover 828. The free end of the pin passes through the bushing 829 and is installed on the deep groove ball bearing 822, so that the upper cover 828 can rotate. A fixing block spring 827 is provided between the fixing block 823 and the lower pressure plate 830.

[0036] In this embodiment, the rotatable pin allows the detection probe 81 to rotate, enabling it to adaptively adjust its posture based on its contact with the porcelain insulator surface. The fixed block spring 827 provides the detection probe 81 with an adaptive left-right swinging adjustment capability. For example, when the detection probe 81 is an ultrasonic detection probe, it can adaptively adjust its contact posture with the porcelain insulator surface to achieve a tight fit, resulting in more accurate detection results.

[0037] According to embodiments of the present invention, such as Figure 2 and Figure 5 As shown, the detection assembly 8 also includes a detection base; the detection base is fixedly connected to the guide rail 23; the detection base is equipped with a detection assembly motor 85 and a lead screw moving mechanism 84, the probe base 82 is fixedly connected to the lead screw nut of the lead screw moving mechanism 84, the detection assembly motor 85 drives the lead screw of the lead screw moving mechanism 84 to rotate, so that the detection probe 81 can extend and retract along the contact direction between the detection base and the porcelain insulator. A lower camera 61 for observing the detection assembly 8 is provided on the guide rail 23.

[0038] According to embodiments of the present invention, such as Figure 1 and Figure 2 As shown, the drive assembly 3 can drive the gear ring 21 to rotate the guide rail 23 coaxially on the surface of the fixed base 1. The drive assembly 3 includes a drive motor and a gear mounted on the output shaft of the drive motor. The gear meshes with the gear ring 21, and the drive assembly 3 drives the gear ring 21 to rotate by driving the gear.

[0039] According to embodiments of the present invention, such as Figure 1 As shown, the push rod assembly 4 is connected to the fixed base 1 through a position adjustment mechanism, which can adjust the setting position of the push rod assembly 4 in the radial direction of the fixed base 1.

[0040] The position adjustment mechanism can adjust the radial position of the push rod assembly 4 on the fixed base 1 to accommodate cylindrical porcelain insulators of various diameters.

[0041] According to embodiments of the present invention, such as Figure 1 and Figure 4 As shown, the position adjustment mechanism includes: a hinged fixing base 50, an L-shaped fixing plate 52, and a slide rail 53; the slide rail 53 is fixedly connected to the fixing base 1, the L-shaped fixing plate 52 is fixedly connected to the slider of the slide rail 53, the electric linear push rod 49 is detachably fixedly connected to the L-shaped fixing plate 52, and the bottom of the electric linear push rod 49 is detachably fixedly connected to the fixing base 1 through the hinged fixing base 50.

[0042] like Figure 1 and Figure 4 As shown, the slide rail 53 is used to adjust the radial position of the electric linear actuator 49 on the fixed base 1; the hinged fixing seat 50 can fix the radial position of the electric linear actuator 49 on the fixed base 1; the L-shaped fixing plate 52 is used to support the electric linear actuator 49.

[0043] According to embodiments of the present invention, such as Figure 1 and Figure 4 As shown, a scale plate is provided on the fixed base 1, and a scale plate pointer 51 is provided at the bottom of the electric linear push rod 49; the scale plate pointer 51 is used to cooperate with the scale plate to indicate the setting position of the electric linear push rod 49 in the radial direction of the fixed base 1.

[0044] Since the scale pointer 51 is fixedly connected to the bottom of the electric linear actuator 49, and the scale is fixedly mounted on the fixed base 1, the scale pointer 51 can indicate the radial position of the electric linear actuator 49 on the fixed base 1, facilitating the adjustment of the final position reached by the extension distance of the rod head of the electric linear actuator 49.

[0045] According to embodiments of the present invention, such as Figure 4 As shown, a linear bearing 41 is provided on the free end of the top plate 43, and a bolt 45 passes through the linear bearing 41 and is fixedly connected to a pressure block 46 located on the outside of the free end of the top plate 43; a spring 44 is provided between the top plate 43 and the pressure block 46; a proximity sensor 42 is provided on the free end of the top plate 43, and the proximity sensor 42 is used to detect the relative distance between the top plate 43 and the pressure block 46.

[0046] like Figure 4 As shown, when the pressure block 46 contacts the surface of the porcelain insulator, the spring 44 is compressed, the relative distance between the top plate 43 and the pressure block 46 decreases, and the bolt 45 cooperates with the linear bearing 41 to play a guiding role. When the relative distance between the top plate 43 and the pressure block 46 reaches the set threshold of the proximity sensor 42, the proximity sensor 42 can send a corresponding positioning signal.

[0047] According to embodiments of the present invention, such as Figure 4 As shown, the head of the electric linear actuator 49 is fixedly connected to the top plate 43 via an extension shaft 48.

[0048] In another implementation, the extension shaft 48 can be omitted, and the head of the electric linear actuator 49 can be directly fixedly connected to the top plate 43.

[0049] According to embodiments of the present invention, such as Figure 4 As shown, the extended shaft 48 is fixedly connected to the top plate 43 by screws 47.

[0050] In another implementation, other connection methods can be used to fix the extension shaft 48 to the top plate 43, such as bolts or clips.

[0051] According to embodiments of the present invention, such as Figure 2 As shown, the side wall of the guide rail 23 is provided with a second mounting groove that extends along the arc shape of the guide rail 23, and all the side pulleys 22 are equidistantly arranged in the second mounting groove.

[0052] The arrangement of multiple side pulleys 22 ensures the stability of the guide rail 23 rotating coaxially on the surface of the fixed base 1.

[0053] According to embodiments of the present invention, such as Figure 3 As shown, the top of the fixed base 1 is provided with several limiting wheels 11 that can limit the axial displacement of the gear ring 21.

[0054] In this embodiment, as Figures 1 to 3 As shown, the limiting wheel 11 can apply axial pressure to the gear ring 21, limiting the axial relative distance between the fixed base 1 and the rotating base 2, and improving the stability of the guide rail 23 rotating coaxially on the surface of the fixed base 1.

[0055] According to embodiments of the present invention, such as Figure 1 and Figure 2 As shown, the fixed base 1 is provided with an electromagnetic lock 7 for limiting the rotation of the guide rail 23.

[0056] In this embodiment, as Figure 1 As shown, the electromagnetic lock 7 is used to lock the rotation of the rotating base 2.

[0057] Those skilled in the art will understand that the features described in the various embodiments of the present invention can be combined and / or combined in various ways, even if such combinations or combinations are not explicitly described in the present invention. In particular, the features described in the various embodiments of the present invention can be combined and / or combined in various ways without departing from the spirit and teachings of the present invention. All such combinations and / or combinations fall within the scope of the present invention.

[0058] The embodiments of the present invention have been described above. However, these embodiments are merely illustrative and not intended to limit the scope of the invention. Although various embodiments have been described above, this does not mean that the measures in the various embodiments cannot be used advantageously in combination. Various substitutions and modifications can be made by those skilled in the art without departing from the scope of the invention, and all such substitutions and modifications should fall within the scope of the invention.

Claims

1. A circumferential testing device for porcelain insulators, characterized in that, include: Fixed base (1), rotating base (2), drive assembly (3), and detection assembly (8); Both the fixed base (1) and the rotating base (2) are arc-shaped; The rotating base (2) includes: an arc-shaped guide rail (23); a toothed ring (21) extending along the arc shape of the guide rail (23) is provided on the top of the guide rail (23); and a plurality of side pulleys (22) are provided on the side wall of the guide rail (23). The surface of the fixed base (1) is provided with a first mounting groove (25) extending along the arc shape of the fixed base (1), and a plurality of sliding wheels (24) are provided in the first mounting groove (25); the sliding wheels (24) are in contact with the guide rail (23), the side pulleys (22) are in contact with the outer side wall of the fixed base (1), and the driving assembly (3) can drive the gear ring (21) to drive the guide rail (23) to rotate coaxially on the surface of the fixed base (1); The fixed base (1) is provided with at least two symmetrically arranged push rod assemblies (4); the push rod assembly (4) includes: an electric linear push rod (49) with the rod head extending in the direction of the center of the fixed base (1); the rod head of the electric linear push rod (49) is connected to the top plate (43). The bottom end of the guide rail (23) is provided with a detection component (8) for detecting the target object; the detection component (8) includes: a detection probe (81), a probe base (82), a clean water nozzle (83) for spraying water onto the porcelain insulator, and a coupling agent nozzle (86) for spraying coupling agent onto the porcelain insulator; the detection probe (81) is mounted on the probe base (82); the probe base (82) can adjust the contact posture between the detection probe (81) and the surface of the porcelain insulator; The probe base (82) includes: an adjusting plate (831) and a fixing block (823); the fixing block (823) is provided with a thrust roller bearing (825); an adjusting plate bolt (826) passes through the adjusting plate (831), the thrust roller bearing (825) and a slotted nut (824) in sequence to fix them together, so that the adjusting plate (831) and the fixing block (823) are connected as one unit; the fixing block (823) is provided with a U-shaped block (821), and a deep groove ball bearing (822) is provided between the fixing block (823) and the U-shaped block (821); the fixing block (823) is provided with a U-shaped block (821). 3) A lower pressure plate (830) is provided above the lower pressure plate (830), and an upper cover (828) is provided above the lower pressure plate (830). The upper cover (828) and the lower pressure plate (830) are fixedly connected as one unit. The detection probe (81) is fixedly disposed between the upper cover (828) and the lower pressure plate (830). A pin is provided on the side wall of the upper cover (828). The free end of the pin passes through the bushing (829) and is disposed on the deep groove ball bearing (822), so that the upper cover (828) can rotate. A fixing block spring (827) is provided between the fixing block (823) and the lower pressure plate (830).

2. The circumferential detection device for porcelain insulators according to claim 1, characterized in that, The detection component (8) also includes a detection base; the detection base is fixedly connected to the guide rail (23); the detection base is provided with a detection component motor (85) and a lead screw moving mechanism (84), the probe base (82) is fixedly connected to the lead screw nut of the lead screw moving mechanism (84), the detection component motor (85) drives the lead screw of the lead screw moving mechanism (84) to rotate, so that the detection probe (81) can extend and retract along the contact direction between the detection base and the porcelain insulator.

3. The circumferential detection device for porcelain insulators according to claim 1, characterized in that, The push rod assembly (4) is connected to the fixed base (1) through a position adjustment mechanism, which can adjust the setting position of the push rod assembly (4) in the radial direction of the fixed base (1).

4. The circumferential detection device for porcelain insulators according to claim 3, characterized in that, The position adjustment mechanism includes: a hinged fixing seat (50), an L-shaped fixing plate (52), and a slide rail (53); the slide rail (53) is fixedly connected to the fixing base (1), the L-shaped fixing plate (52) is fixedly connected to the slider of the slide rail (53), the electric linear push rod (49) is detachably fixedly connected to the L-shaped fixing plate (52), and the bottom of the electric linear push rod (49) is detachably fixedly connected to the fixing base (1) through the hinged fixing seat (50).

5. The circumferential detection device for porcelain insulators according to claim 4, characterized in that, The fixed base (1) is provided with a scale plate, and the bottom of the electric linear push rod (49) is provided with a scale plate pointer (51); the scale plate pointer (51) is used to cooperate with the scale plate to indicate the setting position of the electric linear push rod (49) in the radial direction of the fixed base (1).

6. The circumferential testing device for porcelain insulators according to claim 5, characterized in that, A linear bearing (41) is provided on the free end of the top plate (43), and a bolt (45) passes through the linear bearing (41) and is fixedly connected to a pressure block (46) located on the outside of the free end of the top plate (43); a spring (44) is provided between the top plate (43) and the pressure block (46); a proximity sensor (42) is provided on the free end of the top plate (43), and the proximity sensor (42) is used to detect the relative distance between the top plate (43) and the pressure block (46).

7. The circumferential testing device for porcelain insulators according to any one of claims 1 to 6, characterized in that, The head of the electric linear actuator (49) is fixedly connected to the top plate (43) via an extension shaft (48).

8. The circumferential detection device for porcelain insulators according to claim 7, characterized in that, The extension shaft (48) is fixedly connected to the top plate (43) by screws (47).

9. The circumferential testing device for porcelain insulators according to any one of claims 1 to 6, characterized in that, The side wall of the guide rail (23) is provided with a second mounting groove that extends along the arc shape of the guide rail (23), and all the side pulleys (22) are equidistantly arranged in the second mounting groove.

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