Rust-proof structure of fault indicator open-type induction power-taking module

Abstract

The utility model discloses a rust-proof structure of a fault indicator open type induction power-taking module group, comprising a fault indicator main body, the fault indicator main body comprises an upper shell and a lower shell which are correspondingly arranged up and down, and opposite sides of the upper shell and the lower shell are symmetrically provided with wire passing holes. A wire passing hole is formed in the upper shell, an upper wire clamping support is arranged at the position, corresponding to the wire passing hole, of the middle position in the upper shell, a lower wire clamping support is fixedly installed at the position, corresponding to the wire passing hole, of the middle position in the lower shell, and the position of the lower wire clamping support corresponds to the position of the upper wire clamping support. The end faces of the upper shell and the lower shell are tightly attached, the lower iron core sealing rubber ring is extruded, the upper iron core sealing rubber ring is compressed by combining the upper shell and the top cover, the lower iron core support and the lower shell extrude the iron core silica gel pad to form a closed space, air can be effectively prevented from entering the closed space containing the iron core, and therefore the iron core is effectively prevented from rusting, and the service life of the iron core is prolonged. The service life and the stability are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power, in particular to an anti-rust structure of an open-type induction power-taking module of a fault indicator. Background Technique

[0002] A fault indicator refers to a device installed on a power line (overhead line, cable and busbar) to indicate a fault current. Most fault indicators can only distinguish and indicate a short-circuit fault by detecting the characteristics of the short-circuit current. The open-type induction power-taking module in the fault indicator is a key part of the fault indicator, which is used to induct and obtain electric energy from the power line to support the normal operation of the fault indicator. The open-type induction power-taking module adopts the principle of electromagnetic induction and inducts current through an induction coil installed on the power line. When current passes through the line, the induction coil will generate an induced electromotive force, and then generate electric energy.

[0003] At present, the anti-rust measures for the open-type induction power-taking module of the fault indicator in the power field are mainly divided into two schemes: the spring pressing plus silica gel scheme and the double-screw locking structure plus silica gel scheme. In the former scheme, when affected by weather such as strong wind during normal use, the upper and lower shell end faces will be separated and combined, sucking in external air, resulting in rusting of the iron core of the open-type induction power-taking module. In the latter scheme, during installation, the product must be directly above the personnel. When installing, it is necessary to support the weight of the entire product and the insulating rod upwards, which requires high installation environment and physical strength of the construction personnel. Moreover, it is easy to fail during live installation and requires repeated labor. Therefore, it is necessary to design an anti-rust structure for the open-type induction power-taking module of the fault indicator to improve the above problems. Content of the Utility Model

[0004] 1. Technical Problems to be Solved by the Utility Model

[0005] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide an anti-rust structure for the open-type induction power-taking module of a fault indicator, aiming to solve the problems that the iron core of the existing open-type induction power-taking module of the fault indicator is easy to come into contact with air and cause rust, and the locking and fixing structure of the existing fault indicator has poor installation stability, requires high installation environment and physical strength of the construction personnel, is easy to fail during installation, and requires repeated labor.

[0006] 2. Technical Solution

[0007] To achieve the above purpose, the utility model provides the following technical solution:

[0008] Rust-proof structure of an open-type induction power-taking module for a fault indicator, including a fault indicator main body. The fault indicator main body includes an upper shell and a lower shell arranged corresponding to each other up and down. On one side where the upper shell and the lower shell face each other, wire passing holes are symmetrically opened. At the middle position inside the upper shell corresponding to the wire passing hole, an upper wire clamping bracket is provided. At the middle position inside the lower shell corresponding to the wire passing hole, a lower wire clamping bracket is fixedly installed. The position of the lower wire clamping bracket corresponds to that of the upper wire clamping bracket.

[0009] A connection and tensioning assembly is arranged between the lower shell and the upper wire clamping bracket. The connection and tensioning assembly is used to close the upper shell and the lower shell closer. A self-aligning screw locking structure is arranged between the outer walls of the lower shell and the upper shell. The self-aligning screw locking structure is used to lock the upper shell and the lower shell.

[0010] Induction power-taking modules are arranged on both sides of the upper shell and the lower shell inside the fault indicator main body. The induction power-taking module includes an upper iron core and a lower iron core. An upper installation groove is opened inside the upper shell, and the upper iron core is fixedly installed in the upper installation groove. A lower installation groove is opened inside the lower shell, and the lower iron core is fixedly installed in the lower installation groove. A sealing and rust-proof structure is arranged between the upper iron core and the lower iron core.

[0011] Preferably, the sealing and rust-proof structure includes lower iron core sealing rubber rings arranged on the outer sides of both ends of the upper installation groove. The lower iron core sealing rubber rings are embedded and installed at the bottom end of the upper shell.

[0012] Preferably, the sealing and rust-proof structure further includes lower iron core brackets installed inside both ends of the lower installation groove. The lower iron core brackets are sleeved on the outer side of the lower iron core, and an iron core silica gel pad is fixedly connected to the top of the lower iron core bracket.

[0013] Preferably, the sealing and rust-proof structure further includes an upper iron core sealing rubber ring. A top cover is detachably installed at the position corresponding to the upper iron core on the top of the upper shell. The upper iron core sealing rubber ring is installed at the connection between the top cover and the upper shell.

[0014] Preferably, the connection and tensioning assembly includes a thick screw and a copper nut matching the thick screw. The copper nut matching the thick screw is embedded and installed on the upper wire clamping bracket. Installation holes for the thick screw to pass through are opened on the lower shell and the lower wire clamping bracket. The top end of the thick screw passes through the installation hole and is threadedly connected into the copper nut matching the thick screw. The bottom end of the thick screw extends to the outside of the lower shell and is fixedly connected with a lifting ring through a pin.

[0015] Preferably, guide columns are fixedly connected to both sides inside the upper shell. Guide holes corresponding to the positions of the guide columns are opened on the upper wire clamping bracket. The upper wire clamping bracket is slidably connected with the guide columns through the guide holes. A housing pressing spring is sleeved outside the guide columns between the bottom of the upper wire clamping bracket and the bottom end inside the upper shell.

[0016] Preferably, guide rods are fixedly connected to both sides of the upper housing, guide sleeves corresponding to the positions of the guide rods are fixedly connected to both sides of the lower housing, and one end of each guide rod is slidably installed inside the corresponding guide sleeve.

[0017] Preferably, the self-aligning screw locking structure includes a connecting column fixedly connected to the outer wall of the lower housing and a connecting ear plate fixedly connected to the outer wall of the bottom end of the upper housing. The connecting ear plate corresponds to the position of the connecting column. An installation cavity penetrating through it is vertically opened inside the connecting column. An M6 threaded screw is slidably installed inside the installation cavity. An embedded M6 nut is embedded and installed on the connecting ear plate. The top end of the M6 threaded screw is threadedly connected inside the embedded M6 nut. An flared groove is opened at the top end of the installation cavity. A limiting block is arranged on the outer side of the part of the M6 threaded screw located in the flared groove. A screw compression spring is sleeved on the outer side of the M6 threaded screw between the bottom of the limiting block and the inner bottom end of the flared groove. The bottom of the M6 threaded screw extends outside the connecting column and is fixedly connected with a locking rotating disc through a small pin.

[0018] 3. Beneficial effects

[0019] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0020] (1) Through the provided sealing and rust-proof structure of the present utility model, after the upper housing and the lower housing are connected, the end faces of the upper housing and the lower housing are closely attached, squeezing the lower iron core sealing rubber ring. Combining the upper housing and the top cover to compress the upper iron core sealing rubber ring, and the lower iron core bracket and the lower housing squeezing the iron core silica gel pad to form a closed space, which can effectively prevent air from entering the sealed space containing the iron core, thereby effectively preventing the iron core from rusting and improving the service life and stability.

[0021] (2) Through the provided connection and tensioning assembly of the present utility model, it is convenient to quickly attach the lower end face of the upper housing to the upper end face of the lower housing and assemble the upper housing and the lower housing. Through the provided self-aligning screw locking structure, during the process of the upper housing moving and fitting with the lower housing, the connecting ear plate contacts the top end of the M6 threaded screw and squeezes the M6 threaded screw into the installation cavity, thereby squeezing the screw compression spring through the limiting block on the M6 threaded screw. On the contrary, the screw compression spring has an upward reaction force on the M6 threaded screw to ensure that the M6 threaded screw can accurately align and lock the embedded M6 nut. After the upper housing and the lower housing are fitted, rotate the M6 threaded screw to a certain position to engage and rotate-lock with the embedded M6 nut, changing the fixation of the upper housing and the lower housing of the fault indicator in the prior art from the original spring pressing method to a screw locking method, increasing the reliability and installation convenience, and being able to closely attach the upper housing and the lower housing to improve the sealing effect of the sealing and rust-proof structure. Description of the drawings

[0022] Figure 1Schematic diagram of the overall structure of the rust prevention structure of the open - type induction power - taking module for fault indicators;

[0023] Figure 2 It is Figure 1 The sectional view of plane A - A in

[0024] Figure 3 It is Figure 1 The sectional view of plane B - B in

[0025] In the figure: 1. Fault indicator main body; 101. Lower housing; 102. Upper housing; 103. Top cover; 2. Lower wire - clamping bracket; 3. Upper wire - clamping bracket; 4. Guide post; 5. Housing - pressing spring; 6. Connecting and tensioning assembly; 601. Coarse screw; 602. Copper nut matching the coarse screw; 603. Suspension ring; 9. Self - aligning screw - locking structure; 901. Connecting column; 902. M6 threaded screw; 903. Screw - pressing spring; 904. Locking rotating disk; 905. Connecting ear plate; 906. Embedded M6 nut; 10. Induction power - taking module; 1001. Upper iron core; 1002. Lower iron core; 11. Upper iron - core sealing rubber ring; 12. Lower iron - core sealing rubber ring; 13. Lower iron - core bracket; 14. Iron - core silica gel pad. Specific embodiments

[0026] 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 making creative efforts shall fall within the protection scope of the present utility model.

[0027] Embodiment:

[0028] Please refer to Figures 1 - 3, this embodiment provides an anti-rust structure for the open-type induction power-taking module of the fault indicator, including the fault indicator main body 1. The fault indicator main body 1 includes an upper housing 102 and a lower housing 101 arranged corresponding to each other up and down. Through holes are symmetrically opened on one side of the upper housing 102 and the lower housing 101 facing each other. An upper wire clamping bracket 3 is arranged at the middle position inside the upper housing 102 corresponding to the through hole. A lower wire clamping bracket 2 is fixedly installed at the middle position inside the lower housing 101 corresponding to the through hole. The position of the lower wire clamping bracket 2 corresponds to that of the upper wire clamping bracket 3. A connecting and tensioning assembly 6 is arranged between the lower housing 101 and the upper wire clamping bracket 3. The connecting and tensioning assembly 6 is used to close the upper housing 102 and the lower housing 101 closer. A self-aligning screw locking structure 9 is arranged between the outer walls of the lower housing 101 and the upper housing 102. The self-aligning screw locking structure 9 is used to lock the upper housing 102 and the lower housing 101. Induction power-taking modules 10 are arranged on both sides of the upper housing 102 and the lower housing 101 inside the fault indicator main body 1. The induction power-taking module 10 includes an upper iron core 1001 and a lower iron core 1002. An upper installation groove is opened in the upper housing 102, and the upper iron core 1001 is fixedly installed in the upper installation groove. A lower installation groove is opened in the lower housing 101, and the lower iron core 1002 is fixedly installed in the lower installation groove. A sealing and anti-rust structure is arranged between the upper iron core 1001 and the lower iron core 1002. During use, the power line is passed through the through holes of the upper housing 102 and the lower housing 101. The lower housing 101 and the upper housing 102 are pulled closer and fitted through the connecting and tensioning assembly 6. The power line is fixed by the upper wire clamping bracket 3 and the lower wire clamping bracket 2. Then, the lower housing 101 and the upper housing 102 are locked and fixed through the self-aligning screw locking structure 9 to improve the stability of the connection and closely close the upper housing 102 and the lower housing 101. At this time, the sealing performance between the upper iron core 1001 and the lower iron core 1002 is improved through the sealing and anti-rust structure, effectively preventing air from entering the sealed space containing the iron core, thereby effectively preventing the iron core from rusting and improving the service life and stability.

[0029] In this embodiment, as Figure 3As shown, the sealing and rust-proof structure includes a lower iron core sealing rubber ring 12 disposed outside both ends of the upper mounting groove. The lower iron core sealing rubber ring 12 is embedded and installed at the bottom end of the upper housing 102. The sealing and rust-proof structure further includes a lower iron core bracket 13 installed inside both ends of the lower mounting groove. The lower iron core bracket 13 is sleeved outside the lower iron core 1002. A core silica gel pad 14 is fixedly connected to the top of the lower iron core bracket 13. The sealing and rust-proof structure further includes an upper iron core sealing rubber ring 11. A top cover 103 is detachably installed at the top of the upper housing 102 corresponding to the upper iron core 1001. The upper iron core sealing rubber ring 11 is installed at the connection between the top cover 103 and the upper housing 102. After the lower surface of the upper housing 102 is connected to the upper surface of the lower housing 101, the end faces of the upper housing 102 and the lower housing 101 are closely attached, squeezing the lower iron core sealing rubber ring 12. Combining the compression of the upper iron core sealing rubber ring 11 by the upper housing 102 and the top cover 103, and the lower iron core bracket 13 and the lower housing 101 squeezing the core silica gel pad 14 to form a closed space, which can effectively prevent air from entering the sealed space containing the iron core, thereby effectively preventing the iron core from rusting.

[0030] In this embodiment, as Figure 2 shown, the connection and tensioning assembly 6 includes a thick screw 601 and a copper nut 602 matching the thick screw. The copper nut 602 matching the thick screw is embedded and installed on the upper wire clamping bracket 3. Installation holes for the thick screw 601 to pass through are provided on the lower housing 101 and the lower wire clamping bracket 2. The top end of the thick screw 601 passes through the installation hole and is threadedly connected to the copper nut 602 matching the thick screw. The bottom end of the thick screw 601 extends outside the lower housing 101 and is fixedly connected with a lifting ring 603 through a pin. Guide columns 4 are fixedly connected to both sides inside the upper housing 102. Guide holes corresponding to the positions of the guide columns 4 are provided on the upper wire clamping bracket 3. The upper wire clamping bracket 3 is slidably connected to the guide columns 4 through the guide holes. A housing pressing spring 5 is sleeved between the bottom of the upper wire clamping bracket 3 and the bottom end inside the upper housing 102 and outside the guide columns 4. When installing the fault indicator body 1 onto the power line, by rotating the lifting ring 603 with an auxiliary tool, the rotation operation of the thick screw 601 is realized. By rotating the thick screw 601, the thick screw 601 drives the copper nut 602 matching the thick screw to move. The copper nut 602 matching the thick screw moves the upper wire clamping bracket 3 towards the lower housing 101. As the upper wire clamping bracket 3 moves, it squeezes the housing pressing spring 5, thereby moving the upper housing 102, realizing the fitting of the lower end face of the upper housing 102 and the upper end face of the lower housing 101, and clamping and fixing the power line through the upper wire clamping bracket 3 and the lower wire clamping bracket 2, facilitating the fitting and assembly of the upper housing 102 and the lower housing 101, with convenient operation and easy assembly.

[0031] In this embodiment, as Figure 2As shown, guide rods are fixedly connected to both sides of the upper housing 102, and guide sleeves corresponding to the positions of the guide rods are fixedly connected to both sides of the lower housing 101. One end of the guide rod is slidably installed in the guide sleeve. Multiple groups of guide rods and guide sleeves are provided. When the upper housing 102 moves and fits with the lower housing 101, the guide rod slides in the guide sleeve, playing a role in limiting and guiding the upper housing 102 and improving the assembly stability.

[0032] In this embodiment, as Figure 2 shown, the self-aligning screw locking structure 9 includes a connecting column 901 fixedly connected to the outer wall of the lower housing 101 and a connecting ear plate 905 fixedly connected to the outer wall of the bottom end of the upper housing 102. The connecting ear plate 905 corresponds to the position of the connecting column 901. An installation cavity penetrating it vertically is opened inside the connecting column 901. An M6 threaded screw 902 is slidably installed in the installation cavity. An embedded M6 nut 906 is embedded and installed on the connecting ear plate 905. The top end of the M6 threaded screw 902 is threadedly connected to the embedded M6 nut 906. An flared groove is opened at the top end of the installation cavity. A limiting block is provided on the outer side of the part of the M6 threaded screw 902 located in the flared groove. A screw compression spring 903 is sleeved on the outer side of the M6 threaded screw 902 between the bottom of the limiting block and the inner bottom end of the flared groove. The bottom end of the M6 threaded screw 902 extends outside the connecting column 901 and is fixedly connected to a locking rotary disc 904 through a small pin. During the process of the upper housing 102 moving and fitting with the lower housing 101, the connecting ear plate 905 contacts the top end of the M6 threaded screw 902 and squeezes the M6 threaded screw 902 into the installation cavity, thereby squeezing the screw compression spring 903 through the limiting block on the M6 threaded screw 902. On the contrary, the screw compression spring 903 has an upward reaction force on the M6 threaded screw 902, ensuring that the M6 threaded screw 902 can accurately align and lock the embedded M6 nut 906. After the upper housing 102 and the lower housing 101 are fitted, by using a tool to rotate the locking rotary disc 904, the rotation operation of the M6 threaded screw 902 is realized. Rotate the M6 threaded screw 902 to a certain position to fit and rotate-lock with the embedded M6 nut 906, changing the fixation of the upper housing 102 and the lower housing 101 of the existing fault indicator from the original spring pressing method to a screw locking method, increasing the reliability and installation convenience. It should be noted that multiple groups of self-aligning screw locking structures 10 can be provided on the outer sides of the four sides of the upper housing 102 and the lower housing 101 to improve the locking and fixing effect.

[0033] In this embodiment, a gasket is provided between the locking rotary disc 904 and the outer wall of the lower housing 101 to improve the stopping effect on the M6 threaded screw 902.

[0034] Working principle: When in use, pass the power line through the wire passing holes of the upper housing 102 and the lower housing 101. Rotate the lifting ring 603 of the auxiliary tool to realize the rotation operation of the thick screw rod 601. By rotating the thick screw rod 601, the thick screw rod 601 drives the copper nut 602 matching the thick screw rod to move. The copper nut 602 matching the thick screw rod moves the upper wire clamping bracket 3 towards the lower housing 101. As the upper wire clamping bracket 3 moves, it squeezes the housing pressing spring 5 and moves the upper housing 102, making the lower end face of the upper housing 102 fit with the upper end face of the lower housing 101, and clamping and fixing the power line through the upper wire clamping bracket 3 and the lower wire clamping bracket 2. During this process, the connecting ear plate 905 contacts the top end of the M6 threaded screw rod 902 and squeezes the M6 threaded screw rod 902 into the installation cavity, so that the limiting block on the M6 threaded screw rod 902 squeezes the screw pressing spring 903. On the contrary, the screw pressing spring 903 has an upward reaction force on the M6 threaded screw rod 902 to ensure that the M6 threaded screw rod 902 can be accurately positioned and locked to the embedded M6 nut 906. After the upper housing 102 and the lower housing 101 are fitted, rotate the locking rotating disc 904 through the auxiliary tool to realize the rotation operation of the M6 threaded screw rod 902. Rotate the M6 threaded screw rod 902 to a certain position to fit and rotate-lock with the embedded M6 nut 906, changing the fixation of the upper housing 102 and the lower housing 101 of the fault indicator in the prior art from the original spring pressing method to a screw locking method, increasing reliability and installation convenience. After the lower surface of the upper housing 102 is tightly connected to the lower housing 101, the end faces of the upper housing 102 and the lower housing 101 are tightly fitted, squeezing the lower iron core sealing rubber ring 12, and combining the upper housing 102 and the top cover 103 to compress the upper iron core sealing rubber ring 11. The lower iron core bracket 13 and the lower housing 101 squeeze the iron core silica gel pad 14 to form a closed space, which can effectively prevent air from entering the sealed space containing the iron core, thereby effectively preventing the iron core from rusting and improving the service life and stability.

[0035] The above embodiments are the preferred implementation solutions of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the technical solution of the present invention is within the protection scope of the present invention.

Claims

1. A rust-proof structure of an open-type induction power module of a fault indicator, comprising a fault indicator body (1), wherein the fault indicator body (1) comprises an upper shell (102) and a lower shell (101) arranged correspondingly up and down, and a wire-passing hole is symmetrically provided on opposite sides of the upper shell (102) and the lower shell (101), and the characteristics are: An upper wire clamping bracket (3) is provided at a position corresponding to the wire through hole in the middle of the upper shell (102), and a lower wire clamping bracket (2) is fixedly installed at a position corresponding to the wire through hole in the middle of the lower shell (101), and the position of the lower wire clamping bracket (2) corresponds to that of the upper wire clamping bracket (3); A connecting and tightening assembly (6) is provided between the lower shell (101) and the upper wire clamping bracket (3), and the connecting and tightening assembly (6) is used to close the upper shell (102) and the lower shell (101), and a self-aligning spiral locking structure (9) is provided between the outer walls of the lower shell (101) and the upper shell (102), and the self-aligning spiral locking structure (9) is used to lock the upper shell (102) and the lower shell (101); An inductive power supply module (10) is arranged inside the fault indicator body (1) on both sides of the upper shell (102) and the lower shell (101), and the inductive power supply module (10) comprises an upper iron core (1001) and a lower iron core (1002). An upper mounting groove is provided in the upper shell (102), and the upper iron core (1001) is fixedly installed in the upper mounting groove. A lower mounting groove is provided in the lower shell (101), and the lower iron core (1002) is fixedly installed in the lower mounting groove. A sealing and rust-proof structure is provided between the upper iron core (1001) and the lower iron core (1002).

2. The rust-proof structure of the fault indicator open-type induction power module according to claim 1, characterized in that: The sealing and rust-proof structure comprises a lower iron core sealing rubber ring (12) arranged on the outer sides of both ends of the upper installation groove, and the lower iron core sealing rubber ring (12) is embedded and installed in the bottom end of the upper shell (102).

3. The rust-proof structure of the fault indicator open-type induction power module according to claim 2, characterized in that: The sealing and rust-proof structure also includes a lower core bracket (13) installed inside the two ends of the lower installation groove, the lower core bracket (13) is sleeved on the outside of the lower core (1002), and the top of the lower core bracket (13) is fixedly connected to a core silicone pad (14).

4. The rust-proof structure of the fault indicator open-type induction power module according to claim 3 is characterized in that: The sealing and rust-proof structure also includes an upper iron core sealing rubber ring (11); a top cover (103) is detachably mounted on the top of the upper shell (102) corresponding to the upper iron core (1001); and the upper iron core sealing rubber ring (11) is mounted at the connection between the top cover (103) and the upper shell (102).

5. The rust-proof structure of the fault indicator open-type induction power module according to claim 1, characterized in that: The connecting and tightening assembly (6) comprises a thick screw (601) and a copper nut (602) matching the thick screw. The copper nut (602) matching the thick screw is embedded in the upper wire clamping bracket (3). The lower shell (101) and the lower wire clamping bracket (2) are provided with mounting holes for the thick screw (601) to pass through. The top end of the thick screw (601) passes through the mounting hole and is threadedly connected to the copper nut (602) matching the thick screw. The bottom end of the thick screw (601) extends to the outside of the lower shell (101) and is fixedly connected to a lifting ring (603) by a latch.

6. The rust-proof structure of the fault indicator open-type induction power module according to claim 5, characterized in that: Guide columns (4) are fixedly connected to both sides of the upper shell (102), and the upper wire clamping bracket (3) is provided with guide holes corresponding to the positions of the guide columns (4). The upper wire clamping bracket (3) is slidably connected to the guide columns (4) through the guide holes, and a compression shell spring (5) is sleeved between the bottom of the upper wire clamping bracket (3) and the bottom end of the upper shell (102) and located on the outside of the guide columns (4).

7. The rust-proof structure of the fault indicator open-type induction power module according to claim 1, characterized in that: Both sides of the upper shell (102) are fixedly connected with guide rods, and both sides of the lower shell (101) are fixedly connected with guide sleeves corresponding to the positions of the guide rods, and one end of the guide rod is slidably installed in the guide sleeve.

8. The rust-proof structure of the fault indicator open-type induction power module according to claim 1, characterized in that: The self-aligning spiral locking structure (9) comprises a connecting column (901) fixedly connected to the outer wall of the lower shell (101) and a connecting ear plate (905) fixedly connected to the outer wall of the bottom end of the upper shell (102), wherein the connecting ear plate (905) corresponds to the connecting column (901) in position, and a mounting cavity is vertically opened inside the connecting column (901) to penetrate the connecting column, an M6 threaded screw (902) is slidably installed in the mounting cavity, and an embedded M6 nut (906) is embedded in the connecting ear plate (905). ), the top of the M6 ​​threaded screw (902) is threadedly connected to the embedded M6 nut (906), the top of the installation cavity is provided with a flaring groove, the outer side of the part of the M6 ​​threaded screw (902) located in the flaring groove is provided with a limit block, a screw compression spring (903) is sleeved between the bottom of the limit block and the bottom end of the flaring groove and located on the outer side of the M6 ​​threaded screw (902), the bottom of the M6 ​​threaded screw (902) extends to the outside of the connecting column (901) and is fixedly connected to a locking rotating disk (904) through a small pin.

Images