CN-122026177-A - High-low temperature resistant interlocking type explosion-proof plugging device and method

CN122026177ACN 122026177 ACN122026177 ACN 122026177ACN-122026177-A

Abstract

The invention relates to a high-low temperature resistant interlocking type explosion-proof plugging device and a method, and relates to the technical field of interlocking type explosion-proof plugging devices. The connecting device comprises a plugging table and a plugging connecting rod, wherein a connecting pipe is arranged at the periphery of an interface of the plugging table, a movable ring is arranged on the surface of the connecting pipe, a closed bin is arranged on the outer surface of the plugging connecting rod, and a supporting ring is arranged on the surface of a socket of the plugging connecting rod. According to the invention, through the connecting pipe, the movable ring, the closed bin and the locking mechanism, the plugging table and the plugging rod can be quickly disassembled and assembled, the problem that abrasion is easy to occur under frequent plugging and unplugging is avoided, and the locking process is realized through the linkage of 'sliding of the movable ring-detachment of the limiting rod, abutting-extrusion of the closed bin, limiting wheel-spring rebound reset locking', and the whole process is smooth sliding, elastic abutting and accurate clamping.

Inventors

JIN XIAOPENG
LIN ZHELIN
XIE SHICHEN
CHEN ZHIQIN
HU ZANJIE
Dong Rudi
Zeng Yunai
Yao Guofa
ZHANG CHENYE

Assignees

合隆防爆电气有限公司

Dates

Publication Date: 20260512
Application Date: 20260323

Claims (9)

1. The high-low temperature resistant interlocking type explosion-proof plugging device comprises a plugging table (1) and a plugging rod (2) and is characterized in that a connecting pipe (3) is arranged at the periphery of an interface of the plugging table (1), a movable ring (4) is arranged on the surface of the connecting pipe (3), a closed bin (5) is arranged on the outer surface of the plugging rod (2), a supporting ring (6) is arranged on the surface of a socket of the plugging rod (2), a collision block (7) is arranged on the outer surface of an internal interface of the connecting pipe (3), a locking mechanism is arranged inside the connecting pipe (3) and the movable ring (4), a sealing supporting mechanism is arranged inside the supporting ring (6), and sealing rubber rings are arranged on the outer side of the closed bin (5) and the inner wall of the connecting pipe (3); The locking mechanism comprises a connecting ring (801) arranged on the surface of a connecting pipe (3), a limiting rod (802) is arranged on the inner wall of the moving ring (4), a connecting plate (803) is arranged at the bottom of the inner wall of the inner groove of the connecting pipe (3), a mounting table (804) is arranged on the connecting plate (803) through a spring, and a limiting wheel (805) is rotationally connected to the mounting table (804) close to the central area of the moving ring (4).
2. The high and low temperature resistant interlocking type explosion-proof plugging device according to claim 1, wherein the abutting blocks (7) are circumferentially distributed in the connecting pipe (3), one end of each abutting block (7) close to the closed bin (5) is obliquely designed, and an annular groove is formed in the surface of the closed bin (5) close to the connecting pipe (3).
3. The high-low temperature resistant interlocking type explosion-proof plugging device according to claim 2, wherein a spring is arranged at the side end of the connecting ring (801), the other end of the spring is connected with the inner wall of the movable ring (4), the limiting rod (802) is L-shaped, and one end of the limiting rod (802) close to the connecting plate (803) is inclined.
4. The high and low temperature resistant interlocking type explosion-proof plugging device according to claim 3, wherein the top of the installation table (804) is connected with a protrusion, and an inclined surface of one end of the limiting rod (802) close to the connecting plate (803) is abutted against the protrusion at the top of the installation table (804).
5. The high and low temperature resistant interlocking type explosion-proof plugging device according to claim 4, wherein the sealing support mechanism comprises six groups of support rods (901) which are vertically and slidably connected inside a support ring (6), a swivel (902) is rotatably connected to the inner wall of one side of a cavity of the support ring (6) close to the connecting pipe (3), a sliding plate (903) is arranged in the cavity of the support ring (6), a moving plate (904) is transversely slid inside the closed bin (5), an abutting plate (905) is transversely slid inside the cavity of the support ring (6), an elastic pressurizing rod (906) is vertically slid inside the support rods (901), abutting platforms (907) are arranged at the bottoms of the elastic pressurizing rods (906), and abutting rods (908) are transversely slid inside the support rods (901).
6. The high-low temperature resistant interlocking type explosion-proof plugging device is characterized in that six groups of inclined notches are formed in the swivel (902), six groups of vertical notches are formed in the abutting plate (905), the left sides of the bottoms of the six groups of supporting rods (901) slide in the inclined notches of the swivel (902) in a limiting mode, the right sides of the bottoms of the six groups of supporting rods (901) slide in the vertical notches of the sliding plate (903) in a limiting mode, protruding rods close to one end of the connecting pipe (3) of the swivel (902) are abutted against inclined faces of the abutting blocks (7), and torsion springs are connected with the inner walls of the swivel (902) and the supporting rods (901).
7. The high-low temperature resistant interlocking type explosion-proof plugging device according to claim 6 is characterized in that the movable plate (904) penetrates through the supporting ring (6) through a connecting rod and is connected with the abutting plate (905), and a screw rod is rotatably connected to the other end of the movable plate (904) and is in threaded connection with the inner wall of the supporting ring (6).
8. The high-low temperature resistant interlocking type explosion-proof plugging device according to claim 7, wherein a spring is installed at the top of the abutting table (907), the other end of the spring is connected with the supporting rod (901), a bump is installed at the bottom of the abutting table (907), an inclined surface is formed at the bottom of the bump, one end, far away from the supporting rod (901), of the abutting rod (908) abuts against the sliding plate (903), a spring is sleeved on the surface of the abutting rod (908), one end of the spring is connected with the supporting rod (901), the other end of the spring is connected with a convex plate, close to one end of the abutting plate (905), of the abutting rod (908), and the top of an ejector rod at the end part of the abutting rod (908) abuts against the inclined surface at the bottom of the abutting table (907).
9. The use method of the high-low temperature resistant interlocking type explosion-proof plugging device is suitable for the high-low temperature resistant interlocking type explosion-proof plugging device as claimed in claims 1 to 8, and is characterized by comprising the following steps: S1, before the inserting rod (2) is inserted, a movable ring (4) on the sliding connecting pipe (3) drives a limiting rod (802) to be separated from a mounting table (804), a closed bin (5) is inserted until a limiting wheel (805) is clamped into a groove of the limiting rod, and the movable ring (4) is loosened to reset and lock the closed bin (5); S2, when the closed cabin (5) is inserted, the abutting block (7) abuts against the convex rod of the rotary ring (902) to enable the convex rod to rotate in the supporting ring (6) to drive the supporting rod (901) to slide, and the elastic pressurizing rod (906) abuts against the inner wall of the closed cabin (5); And S3, under the high-low temperature environment, the rotating screw drives the moving plate (904) and the abutting plate (905) to move, the abutting rod (908) and the abutting table (907) are pushed to move upwards, and the elastic pressing rod (906) is linked to increase the abutting supporting force on the closed bin (5).

Description

High-low temperature resistant interlocking type explosion-proof plugging device and method Technical Field The invention relates to the technical field of interlocking type explosion-proof plugging devices, in particular to a high-temperature and low-temperature resistant interlocking type explosion-proof plugging device and a method. Background The industrial gateway is a core communication hub of the industrial Internet of things and is used for connecting industrial field devices with an upper layer management and a cloud end, the plug-in device is a key hardware support for realizing physical connection, flexible deployment and quick maintenance of the industrial gateway, the industrial gateway and the key hardware support are deeply bound, the industrial gateway plays an important role in the communication hub, double severe requirements are put forward on the performance of the plug-in device, and the rigid requirement is formed. On one hand, the scene generally has explosive dangerous media, such as combustible gases including methane, ethane and the like, and combustible dust including flour, aluminum powder, coal powder and the like, if electric sparks and electric arcs are generated in the electric connection process, surrounding media are extremely easy to ignite, serious safety accidents such as explosion and fire disaster are caused, so that huge economic losses and casualties are caused, on the other hand, most scenes are accompanied with extremely high-low temperature working conditions, the environment temperature is often greatly fluctuating, the temperature range of part of military experiments, deep sea operation and high-temperature smelting scenes is more extreme, and the common electric plug-in device is easy to have the problems of material aging, structural brittle fracture, sealing failure and the like, so that power supply interruption or safety protection failure is directly caused. The existing interlocking device mechanism is mostly dependent on simple lock catches and clamping grooves to be matched, abrasion is easy to generate under frequent plugging, the bonding degree of the lock catches and the clamping grooves is reduced, stable locking force is inconvenient to form during plugging, the phenomenon that a plug is plugged tightly and the interlocking is triggered can occur, a circuit is not completely connected, or the lock catches are not clamped in the limiting positions of the clamping grooves, under the action of frequent plugging and pulling reciprocating stress, the abrasion of a contact and a shell is aggravated, the problem that the circuit can be plugged out without breaking or the plug can not be plugged in, the core function of forced power-off plugging is lost, on the other hand, the temperature resistance of the parts of the plugging device is not matched, the thermal expansion coefficients of materials of all parts inside the device are inconsistent, stress conflict is easy to generate between the parts under the high-low temperature alternating working condition, the structure is loose, the sealing failure is caused, the explosion-proof performance is destroyed, and the stability of the interlocking function is influenced. Aiming at the problems, innovative design based on the original is urgently needed. Disclosure of Invention The invention aims to provide a high-low temperature resistant interlocking type explosion-proof plugging device and a method, so as to solve the problems of the background technology. The high-low temperature resistant interlocking type explosion-proof plugging device comprises a plugging table and a plugging rod, wherein a connecting pipe is arranged at the periphery of an interface of the plugging table, a movable ring is arranged on the surface of the connecting pipe, a closed bin is arranged on the outer surface of the plugging rod, a supporting ring is arranged on the surface of a socket of the plugging rod, a collision block is arranged on the outer surface of an interface inside the connecting pipe, a locking mechanism is arranged inside the connecting pipe and the movable ring, a sealing supporting mechanism is arranged inside the supporting ring, and sealing rubber rings are arranged on the outer side of the closed bin and the inner wall of the connecting pipe; the locking mechanism comprises a connecting ring arranged on the surface of the connecting pipe, a limiting rod is arranged on the inner wall of the movable ring, a connecting plate is arranged at the bottom of the inner wall of the inner groove of the connecting pipe, a mounting table is arranged on the connecting plate through a spring, and a limiting wheel is rotationally connected to the mounting table close to the central area of the movable ring. Preferably, the abutting blocks are distributed in a circumferential shape inside the connecting pipe, one end, close to the closed bin, of each abutting block is in an inclined design, and an annular groove is formed