CN111335750A

CN111335750A - Spring type ring main unit door lock

Info

Publication number: CN111335750A
Application number: CN202010235476.9A
Authority: CN
Inventors: 张永生; 陈斌; 苏华; 胡一峰; 薛波
Original assignee: State Grid Corp of China SGCC; State Grid Jiangsu Electric Power Co Ltd; Changzhou Power Supply Co of State Grid Jiangsu Electric Power Co Ltd
Current assignee: State Grid Corp of China SGCC; State Grid Jiangsu Electric Power Co Ltd; Changzhou Power Supply Co of State Grid Jiangsu Electric Power Co Ltd
Priority date: 2020-03-30
Filing date: 2020-03-30
Publication date: 2020-06-26

Abstract

The invention provides a spring type ring main unit door lock, which comprises a lock box, a padlock, an operating handle, a through shaft, 2 lock rods, 2 connecting rods, 2 lock rod limiting parts and 1 spring, wherein the lock box is provided with a lock cylinder; the lock box includes the box body, the lid, locate the spring bolt installation piece in the box body and locate the spring bolt on the spring bolt installation piece, operating handle is last be equipped with spring bolt matched with spring bolt clearing hole, the lock box is equipped with logical axle clearing hole, lead to the axle locate the logical axle clearing hole of lock box and the mounting hole that the cabinet door set, both ends respectively with operating handle and 2 connecting rod pin joints around leading to the axle, the rear end of 2 connecting rods respectively with 1 locking lever pin joint, 2 locking lever locating parts are fixed to be located on the rear end face of cabinet door, the both ends of spring are located between 2 locking levers with the one end fixed connection of 2 locking levers respectively, the other end of 2 locking levers passes behind 1 locking lever locating part and the locking groove of setting on the cabinet body and cooperates. Compared with the prior art, the invention has the advantages of simpler structure, lower cost, more convenient lock opening and closing operation, time saving and labor saving.

Description

Spring type ring main unit door lock

Technical Field

The invention relates to the field of a matching device of a ring main unit in a power distribution network, in particular to a spring type ring main unit door lock.

Background

The looped netowrk cabinet is one of the important equipment of distribution network, and along with economic society development, the looped netowrk cabinet is laid more and more. In order to ensure the safe operation of the ring main unit and avoid unnecessary safety accidents, the ring main unit needs to be additionally provided with a door lock. The most easily seen lock of 10kV and 20kV distribution looped netowrk cabinet in people's production life, the rotation type looped netowrk cabinet lock of current universal use, it is mainly by locating the lock box on the looped netowrk cabinet door, the rotation type handle that sets up in the lock box, a peg and the padlock that are used for locking rotatory handle in the lock box, the locking lever of world pole formula with the cabinet body complex, locate the lock box and be used for connecting rotatory handle with world pole transmission and the lid that can upwards lift with the supporting design of lock box and constitute, when locking, carry out rotary motion through operating the rotation type handle, drive the corresponding up-and-down motion of world pole and peg graft with the pole hole on the cabinet body and lock, then reuse padlock is locked the rotation type handle. The problems found in the actual use process are as follows: because outdoor greenbelt or roadside are generally located to the looped netowrk cabinet, easy corrosion jam, the structure of day and earth pole is deciliter through the rotation type handle that the lock structure that present looped netowrk cabinet used adopted, because its rotatory lever is too little, when rotating the rotation type handle, if meet connecting piece and/or day and earth pole jam or deformation condition, it is very hard to rotate the rotation type handle, it is very difficult to lock, seriously influence work efficiency, it leads to rotatory handle junction or connecting piece and the cracked condition of day and earth pole junction to appear fortune dimension personnel's vigorous rotation even, and, it directly links with the connecting piece directly to have the structure day and earth pole, make the spliced eye on day and earth pole and the cabinet body easily take place the counterpoint to inaccurate difficult that leads to the fact to lock, influence fortune dimension personnel's work efficiency.

The chinese patent document with the publication number CN110778232A entitled "push-pull ring network cabinet door lock structure" provides a push-pull ring network cabinet door lock structure, which can better solve the disadvantages of the common rotary ring network cabinet door lock in the industry, but the structure is relatively complex, the cost is relatively high, and when unlocking, the elasticity of 2 bent steel wire pipes needs to be overcome to drive 2 lock rods to move for unlocking, which is relatively laborious. Therefore, it is necessary to further improve the ring main unit door lock in the prior art.

Disclosure of Invention

The purpose of the invention is: the ring main unit door lock in the prior art is further improved, and the spring type ring main unit door lock which is simpler in structure, lower in cost, more convenient in lock opening and closing operation, time-saving and labor-saving is provided.

The technical scheme of the invention is as follows: the invention discloses a spring type ring main unit door lock, which comprises a lock box, a padlock, an operating handle, a through shaft and 2 lock rods, wherein the lock box comprises a box body, a box cover movably arranged at the front end of the box body, a lock tongue mounting block arranged in the box body and a lock tongue arranged on the lock tongue mounting block, the front end of the lock tongue is provided with a padlock hole, the operating handle is provided with a lock tongue through hole matched with the lock tongue, the padlock is matched with the lock tongue, the lock box is provided with a through shaft through hole, the lock box is fixedly connected with a cabinet door of the ring main unit through the box body, the cabinet door is provided with a mounting hole for the through shaft to pass through at a position corresponding to the through shaft through hole of the lock box, and the through shaft is arranged in the through shaft through: the ring main unit door lock further comprises 2 connecting rods, 2 lock rod limiting parts and 1 spring; the front end of the through shaft is movably connected with an operating handle in a pin joint mode, the rear end of the through shaft is movably connected with the front ends of 2 connecting rods in a pin joint mode, the rear ends of the 2 connecting rods are respectively movably connected with 1 locking rod in a pin joint mode, 2 locking rod limiting parts are fixedly arranged on the rear end face of the cabinet door, 1 locking rod is arranged above and below an installation hole of the cabinet door, two ends of a spring are respectively fixedly connected with one end of each of the 2 locking rods and arranged between the 2 locking rods, and the other end of each of the 2 locking rods movably penetrates through the 1 locking rod limiting part and then is matched with a locking groove arranged on the cabinet body of the ring main; when locking, 2 lock levers are inserted into the locking groove of the cabinet body, and after the lock tongue passes through the lock tongue hole on the operating handle, the padlock is matched with the padlock hole of the lock tongue to be locked.

The further scheme is as follows: the operating handle comprises a body and a handle, the body and the handle are integrally or fixedly connected, a bolt through hole of the operating handle is formed in the upper portion of the body, a connecting groove is formed in the front and rear portion of the lower portion of the body, and pin holes are formed in the left end and the right end of the body at the connecting groove.

The further scheme is as follows: the through shaft comprises a main body part, a handle connecting part and a connecting rod connecting part, wherein the handle connecting part and the connecting rod connecting part are arranged at the front end and the rear end of the main body part and are integrally or fixedly connected with the main body part; the handle connecting part is provided with a handle connecting hole; the connecting rod connecting part is provided with a connecting rod connecting hole; the through shaft is movably pinned by a pin which is matched with a handle connecting hole of the handle connecting part and a pin hole of the body of the operating handle by a pin.

The further scheme is as follows: the connecting rod comprises a rod body, a through shaft connecting part and a lock rod connecting part, the through shaft connecting part and the lock rod connecting part are arranged at the front end and the rear end of the rod body and are integrally or fixedly connected with the rod body, the rod body is a cylindrical structural part, the through shaft connecting part and the lock rod connecting part are both rectangular structural parts, the center line of the lock rod connecting part is collinear with the axis line of the rod body, the center line of the through shaft connecting part is positioned at the outer side of the axis line of the rod body, a through shaft connecting hole is formed in the through shaft connecting part; the 2 connecting rods are respectively arranged at two sides of the connecting rod connecting part of the through shaft by the through shaft connecting parts, and the through shaft connecting holes of the through shaft connecting parts of the 2 connecting rods are matched with the connecting rod connecting holes of the connecting rod connecting part of the through shaft and movably pinned by a pin.

The further scheme is as follows: the lock rod comprises a rod body, a rod head and a spring connecting part; the whole rod body is cylindrical, the rod head is in a round table shape, the spring connecting part is cylindrical, and the diameter of the spring connecting part is smaller than that of the rod body; the rod head and the spring connecting part are arranged at two ends of the rod body and are integrally or fixedly connected with the rod body, one side of the rod body close to the spring connecting part is provided with a connecting rod connecting groove which is radially communicated, and the rod body is provided with a connecting rod connecting hole which is vertically communicated with the connecting rod connecting groove at the position of the connecting rod connecting groove; the 2 connecting rods are respectively arranged in the connecting rod connecting grooves of the rod bodies of the 1 locking rods through the locking rod connecting parts, and are movably connected in a pin mode through the matched pin by the locking rod connecting holes of the locking rod connecting parts of the 2 connecting rods and the connecting rod connecting holes of the rod bodies of the 1 locking rods; the two ends of the spring are respectively and fixedly connected with the spring connecting parts of the 2 lock rods, so that the spring is elastically arranged between the 2 lock rods.

The further scheme is as follows: the lock rod limiting part comprises an installation part and a limiting part, the installation part and the limiting part are both rectangular components, the length of the installation part of the limiting part is the same, the width of the limiting part is smaller than that of the installation part, the limiting part is arranged at the rear end of the installation part and is integrated with or fixedly connected with the installation part, and a limiting hole which is through up and down is arranged in the middle of the limiting part along the length direction; the rod bodies of the 2 lock rods respectively penetrate through the limiting holes of the limiting parts of the 1 lock rod limiting part, and the rod heads of the 2 lock rods extend to the locking groove of the cabinet body.

The further scheme is as follows: the box body of the lock box is a cuboid box-shaped part with an opening at the front end; the box cover is a plate body matched with the front end opening of the box body, and the box cover is movably hinged with the upper part of the front end opening of the box body; the lock tongue mounting block is integrated or fixedly connected with the box body and the rear plate of the box body; the lock tongue is a strip-shaped structural part, and the back end of the lock tongue is integrally or fixedly connected with the front end surface of the upper part of the lock tongue mounting block; the through shaft of the lock box is communicated from the front end surface of the lower part of the lock tongue mounting block to the rear end surface of the box body rear plate through a through hole.

The invention has the positive effects that: (1) according to the spring type ring main unit door lock, compared with the prior art, the spring type ring main unit door lock is relatively simpler in overall structure, lower in cost, more convenient to operate during unlocking and locking, time-saving and labor-saving, and capable of enabling locking alignment to be more accurate and locking rate to be lower through improvement of the overall structure, particularly improvement of structures and mutual connection modes of the operating handle, the through shaft, the connecting rod, the lock rod limiting part and the lock rods and addition of the springs among the 2 lock rods. (2) According to the spring type ring main unit door lock, compared with the prior art, due to the structural design of the lock rod limiting piece, the lock rod basically cannot deviate in the vertical movement direction when the lock is unlocked and locked, the verticality is better, the lock rod can be better ensured to be inserted into or separated from the locking groove in the cabinet body, and the unlocking and locking accuracy is improved. (3) According to the spring type ring main unit door lock, the connecting rod connecting groove is formed in the lock rod, one end of the connecting rod is arranged in the groove and connected with the groove in a pin mode, and the 2 connecting rods are movably connected with the through shaft and the operating handle in a pin mode, so that the spring type ring main unit door lock is flexible to operate and cannot be dry and astringent during operation. (4) According to the spring type ring main unit door lock, the springs are arranged among the 2 lock rods, so that compared with the prior art, the spring type ring main unit door lock is easy and labor-saving to operate.

Drawings

Fig. 1 is a schematic structural diagram of the ring main unit in a locked state, and also shows an installation relationship between the ring main unit and a cabinet door of the ring main unit;

FIG. 2 is a sectional view taken along the direction A-A in FIG. 1, and also shows the installation relationship between the ring main unit cabinet door and the ring main unit body according to the present invention;

FIG. 3 is a schematic perspective view of the present invention as viewed from the side front;

FIG. 4 is a schematic perspective view of the present invention as viewed from the side and rear;

FIG. 5 is a schematic cross-sectional view of the present invention in an unlocked state;

FIG. 6 is a schematic view of a lock case of one of the components of the present invention;

FIG. 7 is a schematic view of the operating handle of one of the components of the present invention;

FIG. 8 is a schematic view of the construction of a through shaft of one of the members of the present invention;

FIG. 9 is a schematic view of a connecting rod as one of the members of the present invention;

FIG. 10 is a schematic view of a lock rod limiter according to one embodiment of the present invention;

FIG. 11 is a schematic view of the lock lever as one of the members of the present invention.

The reference numbers in the above figures are as follows:

the lock comprises a lock box 1, a box body 11, a box cover 12, a bolt mounting block 13, a bolt 14, a padlock hole 14-1 and a through shaft through hole 15;

a padlock 2;

an operating handle 3, a body 31, a bolt through hole 31-1, a connecting groove 31-2, a pin hole 31-3 and a handle 32;

the handle comprises a through shaft 4, a main body part 41, a handle connecting part 42, a handle connecting hole 42-1, a connecting rod connecting part 43 and a connecting rod connecting hole 43-1;

the connecting rod 5, a rod body 51, a through shaft connecting part 52, a through shaft connecting hole 52-1, a lock rod connecting part 53 and a lock rod connecting hole 53-1;

the lock rod limiting piece 6, the mounting part 61, the limiting part 62 and the limiting hole 62-1;

the locking rod 7, the rod body 71, the connecting rod connecting groove 71-1, the connecting rod connecting hole 71-2, the rod head 72 and the spring connecting part 73;

a spring 8;

a cabinet door 100, a cabinet body 101 and a locking groove 101-1.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

(example 1)

In the present embodiment, in the description of the orientation, the direction toward which fig. 1 faces is taken as the front in the description, the direction away from the direction toward which fig. 1 faces is taken as the rear in the description, and the up-down and left-right directions in fig. 1 are still the up-down and left-right directions in the description.

Referring to fig. 1 to 5, the spring type ring main unit door lock of the embodiment mainly comprises a lock box 1, a padlock 2, an operating handle 3, a through shaft 4, a connecting rod 5, a lock rod limiting part 6, a lock rod 7 and a spring 8.

Referring to fig. 6, the lock case 1 is mainly composed of a case body 11, a case cover 12, a latch bolt installation block 13 and a latch bolt 14. The box body 11 is a cuboid box-shaped part with an opening at the front end; the box cover 12 is a plate body matched with the front end opening of the box body 11, and the box cover 12 is movably connected with the upper part of the front end opening of the box body 11 in a hinged mode. The bolt mounting block 13 is arranged in the box body 11 and is integrally or fixedly connected with the rear plate of the box body 11; the bolt 14 is a strip-shaped structural member, the front end of the bolt 14 is provided with a padlock hole 14-1, and the bolt 14 is integrally or fixedly connected with the front end surface of the upper part of the bolt mounting block 13 from the rear end thereof; the lock case 1 is provided with a through shaft passage hole 15 penetrating from the lower front end surface of the tongue mounting block 13 to the rear end surface of the rear plate of the case body 11, and the through shaft passage hole 15 is used for accommodating the through shaft 4. When the lock box 1 is used and installed, the rear plate of the box body 11 of the lock box 1 is fixedly connected with the front end face of the cabinet door 100, and the cabinet door 100 is also provided with a mounting hole for the through shaft 4 to pass through at the position corresponding to the through shaft passing hole 15 of the lock box 1.

The padlock 2 is a commercially available part, and when locking, the padlock 2 is hooked and locked with the padlock hole 14-1 of the lock tongue 14.

Referring to fig. 7, the operating handle 3 is mainly composed of a body 31 and a handle 32 which are integrally or fixedly connected, the body 31 is a structural member with an inverted triangle upper end and a cylinder lower end, the body 31 is provided with a bolt passing hole 31-1 which is through from front to back at the upper part thereof, the body 31 is provided with a connecting groove 31-2 from front to back at the lower part thereof, and the body 31 is provided with pin holes 31-3 at the left and right ends of the connecting groove 31-2 thereof. The handle 32 is a round bar, and the handle 32 is integrally or fixedly connected with the upper end of the body 31.

Referring to fig. 8, the through shaft 4 is mainly formed by integrally or fixedly connecting a main body portion 41, a handle connecting portion 42 and a connecting rod connecting portion 43, the main body portion 41 is a cylindrical structural member, the handle connecting portion 42 and the connecting rod connecting portion 43 are rectangular structural members, and the length of the connecting rod connecting portion 43 is greater than that of the handle connecting portion 42; the handle connecting part 42 is arranged at the front end of the main body part 41, and a handle connecting hole 42-1 is arranged on the handle connecting part 42; the link connecting portion 43 is provided at the rear end of the main body portion 41, and the link connecting portion 43 is provided with a link connecting hole 43-1.

The connecting rods 5 are provided with 2 same connecting rods, referring to fig. 9, the connecting rods 5 are mainly formed by integrally or fixedly connecting a rod body 51, a through shaft connecting part 52 and a lock rod connecting part 53, the rod body 51 is a cylindrical structural part, the through shaft connecting part 52 and the lock rod connecting part 53 are both rectangular structural parts, the through shaft connecting part 52 and the lock rod connecting part 53 are respectively arranged at the front end and the rear end of the rod body 51, the central line of the lock rod connecting part 53 is collinear with the axial line of the rod body 51, and the central line of the through shaft connecting part 52 is positioned at the outer side of the axial line of the rod body 51, so that the arrangement mode is convenient for connecting the 2 connecting rods 5 with the through shaft 4 from; the through shaft connecting part 52 is provided with a through shaft connecting hole 52-1, and the lock bar connecting part 53 is provided with a lock bar connecting hole 53-1.

The lock rod limiting pieces 6 are provided with 2 same lock rod limiting pieces 6, referring to fig. 10, the lock rod limiting pieces 6 are mainly formed by integrally or fixedly connecting an installation part 61 and a limiting part 62, the installation part 61 and the limiting part 62 are both cuboid-shaped members, the length of the limiting part 62 is the same as that of the installation part 61, the width of the limiting part 62 is smaller than that of the installation part 61, the limiting part 62 is arranged at the rear end of the installation part 61, and a limiting hole 62-1 which is through up and down is arranged in the middle of the limiting part 62 along the length direction; the limiting hole 62-1 is used for the lock rod 7 to pass through and limit the lock rod 7 during installation, so that the lock rod 7 is ensured to move vertically and accurately without deviation.

The lock rod 7 is provided with 2 same lock rods, and referring to fig. 11, the lock rod 7 mainly comprises a rod body 71, a rod head 72 and a spring connecting part 73 which are integrated; the rod body 71 is cylindrical as a whole, and the diameter of the rod body 71 is slightly smaller than the inner diameter of the limiting hole 62-1 of the limiting part 62 of the lock rod limiting part 6; the rod head 72 is in a circular truncated cone shape, the spring connecting part 73 is in a cylindrical shape, and the diameter of the spring connecting part 73 is smaller than that of the rod body 71; the rod head 72 and the spring connecting part 73 are respectively arranged at two ends of the rod body 71, the rod body 71 is provided with a connecting rod connecting groove 71-1 which is radially penetrated at one side close to the spring connecting part 73, and the rod body 71 is provided with a connecting rod connecting hole 71-2 which is vertically penetrated with the connecting rod connecting groove 71-1 at the position of the connecting rod connecting groove 71-1.

The spring 8 is a commercially available part, and the number of the spring 8 is 1.

Still referring to fig. 1 to 5, when the spring type ring main unit door lock of the present embodiment is installed, the lock case 1 is fixedly connected with the front end surface of the cabinet door 100 through the rear plate of the case body 11, the through shaft passing hole 15 of the lock case 1 is aligned with the installation hole of the cabinet door 100, the through shaft 4 is arranged in the through shaft passing hole 15 of the lock case 1 and the installation hole of the cabinet door 100, the operating handle 3 is sleeved with the handle connecting portion 42 of the through shaft 4 through the connecting groove 31-2 at the lower part of the body 31 of the operating handle 3, and then the pin hole 31-3 of the body 31 of the operating handle 3 is matched with the handle connecting hole 42-1 of the handle connecting portion 42 of the through shaft 4; the through shaft connecting parts 52 of the 2 connecting rods 5 are respectively arranged at two sides of the connecting rod connecting part 43 of the through shaft 4, and movably pinned by a matched pin by utilizing the through shaft connecting holes 52-1 of the through shaft connecting parts 52 of the 2 connecting rods 5 and the connecting rod connecting holes 43-1 of the connecting rod connecting part 43 of the through shaft 4; the lock rod connecting parts 53 of the 2 link rods 5 are respectively arranged in the link rod connecting grooves 71-1 of the rod bodies 71 of the 1 lock rod 7, and the lock rod connecting holes 53-1 of the lock rod connecting parts 53 of the 2 link rods 5 are respectively matched with the link rod connecting holes 71-2 of the rod bodies 71 of the 1 lock rod 7 and movably pinned by using the matched pins; the 2 lock rod limiting parts 6 are respectively connected and fixedly arranged on the rear end face of the cabinet door 100 through the mounting part 61 thereof and the rear end face of the cabinet door 100; after the rod bodies 71 of 2 lock rods 7 respectively pass through the limiting holes 62-1 of the limiting parts 62 of 1 lock rod limiting part 6, the rod heads 72 of 2 lock rods 7 extend to a locking groove 101-1 arranged on the cabinet body 101; both ends of the spring 8 are fixedly connected with the spring connecting parts 73 of the 2 lock levers 7 respectively so as to be elastically arranged between the 2 lock levers 7.

In the spring type ring main unit door lock of the embodiment, when the door lock is in a locking state, the spring 8 is in a natural extension state, and the rod heads 72 of the 2 lock rods 7 are respectively inserted into the locking grooves 101-1 at the upper and lower parts of the cabinet body 101; after the bolt 14 of the lock box 1 passes through the bolt through hole 31-1 of the body 31 of the operating handle 3 forwards, the padlock 2 is matched with the padlock hole 14-1 of the bolt 14 to be locked in a hanging way, and the box cover 12 of the lock box 1 covers the front end opening of the box body 11, so that the wind-shielding, rain-shielding and corrosion-preventing effects are achieved for the interior of the box body 11. In the aforementioned locking state, when the ring main unit door needs to be opened, the box cover 12 is lifted to open and take down the padlock 2, the operating handle 3 is folded down by 90 degrees, so that the operating handle 3 is substantially parallel to the ground, and then the handle 32 holding the operating handle 3 is pulled towards the front of the ring main unit, the movement of the operating handle 3 drives the through shaft 4 to move outwards, the outward movement of the through shaft 4 drives the 2 lock rods 7 to extrude the spring 8 towards the center direction of the spring 8 through the 2 connecting rods 5, so that the rod heads 72 of the 2 lock rods 7 are withdrawn from the locking grooves 101-1 of the main unit 101, and at this time, the main unit door 100 can be pushed open, and the unlocking of the main unit door 100 is realized. Under the state of unlocking, when the ring main body door needs to be closed, an operator pushes the door 100 inwards by one hand, and pulls the handle 32 holding the operating handle 3 outwards in parallel with the ground by the other hand, so that the spring 8 is in an extruded state, when the door 100 is pushed to the innermost position capable of being closed, the hand holding the handle 32 of the operating handle 3 is slowly loosened, 2 lock rods 7 are correspondingly inserted into the locking grooves 101-1 at the upper and lower parts of the cabinet body 101 under the action of the elastic restoring force of the spring 8 to close the door, then the operating handle 3 is folded upwards by 90 degrees, penetrates through the lock tongue 14 to be vertical to the ground, and then the padlock 2 is matched with the padlock locking hole 14-1 of the lock tongue 14 to be locked.

The above embodiments are illustrative of specific embodiments of the present invention, and are not restrictive of the present invention, and those skilled in the relevant art can make various changes and modifications without departing from the spirit and scope of the present invention to obtain corresponding equivalent technical solutions, and therefore all equivalent technical solutions should be included in the scope of the present invention.

Claims

1. The utility model provides a spring looped netowrk cabinet lock, includes lock box, padlock, operating handle, logical axle and 2 locking levers, the lock box includes box body, mobile lid of locating the box body front end, locates spring bolt installation piece in the box body and locating spring bolt on the spring bolt installation piece, the front end of spring bolt are equipped with the padlock hole, operating handle is last to be equipped with the spring bolt clearing hole with spring bolt matched with, the padlock cooperatees with the spring bolt, and the lock box is equipped with logical axle clearing hole, and the mounting hole that is used for leading to the axle to pass through is offered by its box body and looped netowrk cabinet's cabinet door fixed connection and cabinet door in the corresponding department of logical axle clearing hole with the lock box during use, leads to the axle and locates in the logical axle clearing hole of lock box and the mounting: the ring main unit door lock further comprises 2 connecting rods, 2 lock rod limiting parts and 1 spring; the front end of the through shaft is movably connected with an operating handle in a pin joint mode, the rear end of the through shaft is movably connected with the front ends of 2 connecting rods in a pin joint mode, the rear ends of the 2 connecting rods are respectively movably connected with 1 locking rod in a pin joint mode, 2 locking rod limiting parts are fixedly arranged on the rear end face of the cabinet door, 1 locking rod is arranged above and below an installation hole of the cabinet door, two ends of a spring are respectively fixedly connected with one end of each of the 2 locking rods and arranged between the 2 locking rods, and the other end of each of the 2 locking rods movably penetrates through the 1 locking rod limiting part and then is matched with a locking groove arranged on the cabinet body of the ring main; when locking, 2 lock levers are inserted into the locking groove of the cabinet body, and after the lock tongue passes through the lock tongue hole on the operating handle, the padlock is matched with the padlock hole of the lock tongue to be locked.

2. The spring type ring main unit door lock of claim 1, wherein: the operating handle comprises a body and a handle, the body and the handle are integrally or fixedly connected, a bolt through hole of the operating handle is formed in the upper portion of the body, a connecting groove is formed in the front portion and the rear portion of the lower portion of the body, and pin holes are formed in the left end and the right end of the body at the connecting groove.

3. The spring type ring main unit door lock of claim 2, wherein: the through shaft comprises a main body part, a handle connecting part and a connecting rod connecting part, wherein the handle connecting part and the connecting rod connecting part are arranged at the front end and the rear end of the main body part and are integrally or fixedly connected with the main body part, the main body part is a cylindrical structural part, the handle connecting part and the connecting rod connecting part are both rectangular structural parts, and the length of the connecting rod connecting part is greater than that of the handle connecting part; the handle connecting part is provided with a handle connecting hole; the connecting rod connecting part is provided with a connecting rod connecting hole; the through shaft is movably pinned by a pin which is matched with a handle connecting hole of the handle connecting part and a pin hole of the body of the operating handle through a pin.

4. The spring type ring main unit door lock of claim 3, wherein: the connecting rod comprises a rod body, a through shaft connecting part and a lock rod connecting part, the through shaft connecting part and the lock rod connecting part are arranged at the front end and the rear end of the rod body and are integrally or fixedly connected with the rod body, the rod body is a cylindrical structural part, the through shaft connecting part and the lock rod connecting part are both rectangular structural parts, the center line of the lock rod connecting part is collinear with the axis of the rod body, the center line of the through shaft connecting part is positioned at the outer side of the axis of the rod body, a through shaft connecting hole is formed in the through shaft connecting part, and; the 2 connecting rods are respectively arranged at two sides of the connecting rod connecting part of the through shaft connecting parts, and the through shaft connecting holes of the through shaft connecting parts of the 2 connecting rods are matched with the connecting rod connecting holes of the connecting rod connecting parts of the through shaft connecting parts and movably connected by pins through pins.

5. The spring type ring main unit door lock of claim 4, wherein: the lock rod comprises a rod body, a rod head and a spring connecting part; the whole rod body is cylindrical, the rod head is in a round table shape, the spring connecting part is cylindrical, and the diameter of the spring connecting part is smaller than that of the rod body; the rod head and the spring connecting part are arranged at two ends of the rod body and are integrally or fixedly connected with the rod body, one side of the rod body close to the spring connecting part is provided with a connecting rod connecting groove which is radially communicated, and the rod body is provided with a connecting rod connecting hole which is vertically communicated with the connecting rod connecting groove at the position of the connecting rod connecting groove; the 2 connecting rods are respectively arranged in the connecting rod connecting grooves of the rod bodies of the 1 locking rods through the locking rod connecting parts, and the locking rod connecting holes of the locking rod connecting parts of the 2 connecting rods are respectively matched with the connecting rod connecting holes of the rod bodies of the 1 locking rods and movably connected by the arranged pins; the two ends of the spring are respectively and fixedly connected with the spring connecting parts of the 2 lock rods, so that the spring is elastically arranged between the 2 lock rods.

6. The spring type ring main unit door lock of claim 5, wherein: the lock rod limiting part comprises an installation part and a limiting part, the installation part and the limiting part are both rectangular components, the length of the installation part of the limiting part is the same, the width of the limiting part is smaller than that of the installation part, the limiting part is arranged at the rear end of the installation part and is integrated with or fixedly connected with the installation part, and a limiting hole which is through up and down is arranged in the middle of the limiting part along the length direction; and after the rod bodies of the 2 lock rods respectively penetrate through the limiting holes of the limiting parts of the 1 lock rod limiting part, the rod heads of the 2 lock rods extend to the locking groove of the cabinet body.

7. The spring type ring main unit door lock according to any one of claims 1-6, characterized in that: the box body of the lock box is a cuboid box-shaped part with an opening at the front end; the box cover is a plate body matched with the front end opening of the box body, and the box cover is movably hinged with the upper part of the front end opening of the box body; the lock tongue mounting block is integrated or fixedly connected with the box body and the rear plate of the box body; the lock tongue is a strip-shaped structural part, and the back end of the lock tongue is integrally or fixedly connected with the front end surface of the upper part of the lock tongue mounting block; the through shaft of the lock box is communicated from the front end surface of the lower part of the lock tongue mounting block to the rear end surface of the box body rear plate through a hole.