CN217326840U

CN217326840U - High-voltage switch cabinet door locking device

Info

Publication number: CN217326840U
Application number: CN202123124880.8U
Authority: CN
Inventors: 吴平; 黄丽兵; 杨晓琴
Original assignee: Jiangsu Chengxiang Electric Appliance Co ltd
Current assignee: Jiangsu Chengxiang Electric Appliance Co ltd
Priority date: 2021-12-13
Filing date: 2021-12-13
Publication date: 2022-08-30
Anticipated expiration: 2031-12-13

Abstract

The utility model discloses a high tension switchgear cabinet door blocking device in the high voltage distribution equipment field. Its casing is inside to set up the set bar, the coil, movable iron core and fixed iron core, the coil is in the below of set bar, it is unanimous mutually with the moving direction of set bar, movable iron core is in the left side, fixed iron core is on the right side, movable iron core left side below sets up the fixed pin axle, the fixed pin axle is mutually perpendicular with the coil central axis, the outside cover of fixed pin axle has the torsional spring, the last foot of torsional spring upwards extends through the positive left side of movable iron core until extending to the left side top department of movable iron core, the upper end of going up the stabilizer blade is the bulb, the lower surface of set bar is opened there is spherical recess, the bulb can stretch into in the recess. The utility model provides a movable iron core and set bar direct contact not, do not have the effort to the set bar, ensured the axiality between set bar and coil, the fixed iron core, reduce the clearance between spherical recess and the bulb, movable gap reaches the minimum about making the set bar, ensures the reliability of lock.

Description

High-voltage switch cabinet door locking device

Technical Field

The utility model belongs to high-voltage distribution equipment field relates to the high tension switchgear switch board, specifically installs on the high tension switchgear cabinet door for pin the high tension switchgear door, prevent that personnel from missing the high tension switchgear cabinet door locking device in the cabinet.

Background

When the high-voltage switch cabinet is used, the prevention of mistakenly entering an electrified interval is a necessary protection measure. In order to prevent the mistaken entering of the electrified interval, the electromagnetic lock is adopted to lock the switch cabinet door. The electromagnetic lock is actually an electric five-prevention lock, when the high voltage is electrified, the electromagnetic lock can not be opened by a button, the electromagnetic lock is allowed to be opened after high voltage power failure, and the cabinet door of the high voltage switch cabinet can be opened after the electromagnetic lock is opened. Therefore, the electromagnetic lock must reliably close the cabinet door and cannot be manually opened at will.

The structure schematic diagram of an electromagnetic lock for a switch cabinet door commonly used in the prior art is shown in fig. 1, when the electromagnetic lock is in a closed state, a lock bolt of a lock bolt 2 extends into a door frame hole 7 of a high-voltage switch cabinet door, a coil 3 is installed inside a shell 1, the lock bolt 2 is arranged above the coil 3, a movable iron core 4 is arranged between the coil 3 and the lock bolt 2, one end of the movable iron core 4 extends into a central through hole of the coil 3, the other end of the movable iron core extends to the lock bolt 2, and the movable iron core is clamped in a groove 6 formed in the lock bolt 2 to limit the movement of the lock bolt 2, so that the cabinet door is locked. When the cabinet door is to be opened, the coil 3 is electrified, under the action of a magnetic field, the movable iron core 4 is attracted to the opposite fixed iron core 5 and moves to the opposite side, and the other end of the movable iron core 4 is separated from the groove 6, so that the limitation on the lock bolt 2 is removed, the lock bolt 2 can be manually moved, and the cabinet door is opened. When the electromagnetic lock is used, the following problems exist: the method comprises the following steps: in order to ensure that the movable iron core 4 is reliably clamped into the groove 6 upwards, the left length and the right length of the groove 6 are large enough, namely, a large gap is reserved between the movable iron core 4 and the groove 6, and because the distance between the shell 1 and the door frame has installation errors when the shell 1 is installed, under the cumulative effect of the installation errors and the gap between the groove 6, when the electromagnetic lock is locked, the left movable gap and the right movable gap of the lock bolt 2 are large, when the lock bolt 2 is manually operated, the lock bolt 2 can move rightwards, the lock bolt is easily exposed from the door frame hole 7, and in an unlocking state, the cabinet door can be opened. Secondly, the following steps: the restriction to set bar 2 relies on movable iron core 4 completely, set bar 2 is when receiving the spring force effect of set bar spring 8, movable iron core 4 upper end is not just in time located the intermediate position of recess 6, but movable iron core 4 upper end right is pressing recess 6 right flank all the time, and the effect direction of spring force is mutually perpendicular with movable iron core 4's central axis, so when the shutting state, movable iron core 4 is in the tilt state all the time, the central axis that leads to movable iron core 4 and fixed iron core 5 and coil 3's central axis is collineation not, when coil 3 circular telegram and outage, movable iron core 4 actuation is obstructed with the release, also lead to the cabinet door and can not reliably close.

Disclosure of Invention

An object of the utility model is to solve the problem that above-mentioned prior art exists, provide a can realize the high tension switchgear cabinet door blocking device that the high tension switchgear cabinet door reliably closed, activity iron core and set bar direct contact not guarantee the axiality of activity iron core, can reliably close the high tension switchgear cabinet door.

In order to achieve the above object, the high-voltage switch cabinet door locking device of the utility model adopts the following technical scheme: the external part of the device is a shell, a lock plunger is arranged in the shell, a coil, a movable iron core and a fixed iron core are arranged in the shell, the coil is arranged below the lock plunger, a central shaft is horizontally arranged on the left and right, the moving direction of the lock plunger is consistent with that of the lock plunger, the coil is fixedly connected on the inner surface of the shell, the movable iron core is sleeved in a central through hole of the coil, an iron core spring and the fixed iron core are arranged on the left side, the fixed iron core is fixedly connected on the right side wall of the inner surface of the shell, an iron core spring is connected between the movable iron core and the fixed iron core, a fixed pin shaft is arranged below the left side of the movable iron core, the fixed pin shaft is vertical to the central shaft of the coil, a torsional spring is sleeved outside the fixed pin shaft, an upper support pin of the torsional spring extends upwards through the right left side of the movable iron core until the upper side of the left side of the movable iron core is extended to the upper side of the movable iron core, the upper end of the upper support pin is a ball head, a spherical groove is formed in the lower surface of the lock plunger, the ball head can extend into the spherical groove.

Further, the upper leg of the torsion spring is planar at the left end facing the movable core.

Furthermore, the torsion spring and the fixed pin shaft are coaxial, and the lower support of the torsion spring is fixedly connected to the fixed pin shaft or the inner surface of the shell.

Furthermore, the lock bolt is horizontally arranged left and right, the left end and the right end of the lock bolt extend out from the inside of the shell, the left end of the lock bolt is a lock bolt, the lock bolt can extend into a door frame hole formed in a door frame leftwards after penetrating through a through hole in the shell, a handle is fixedly connected to the right end of the lock bolt and is arranged outside the shell, and a lock bolt spring is sleeved on the right side wall of the inner surface of the shell and a step surface of the lock bolt.

Further, the central axis of the coil is collinear with the central axes of the movable iron core, the fixed iron core and the iron core spring.

Furthermore, a control switch is arranged at the lower left inside the shell and connected with the coil through a control line, and the control switch is connected with an external power supply.

The utility model adopts the above technical scheme the prominent advantage is:

1. the utility model provides a movable iron core and set bar direct contact not, when the shutting state, do not have the effort to the set bar, ensured the axiality between set bar and coil, the fixed iron core, simultaneously, movable iron core does not receive the influence of set bar when the actuation motion, and closing and opening of electromagnetic lock are ensured to the actuation reliably.

2. The utility model discloses design into the direction of motion with movable iron core and be consistent with the moving direction of set bar, can reduce the clearance between spherical recess and the bulb, when the shutting state, make the set bar about the clearance of moving reach the minimum, ensure the reliability of lock door.

Drawings

The invention is described in further detail below with reference to the following figures and embodiments:

FIG. 1 is a schematic diagram of a conventional electromagnetic lock;

fig. 2 is a schematic structural diagram of the present invention;

in the figure: 1. a housing; 2. a lock bolt; 3. a coil; 4. a movable iron core; 5. fixing the iron core; 6. a groove; 7. a door frame aperture; 8. a latch spring; 9. a control switch; 10. an iron core spring; 11. a fixed pin shaft, 12. a torsion spring; 13. a ball head; 14. a handle.

Detailed Description

Referring to fig. 2, the exterior of the present invention is a housing 1, and the housing 1 is fixedly mounted on a cabinet door of a high voltage switch cabinet. Fig. 2 only uses the utility model discloses install on the cabinet door that opens the door in the right side for the example, work as the utility model discloses when installing on the cabinet door that opens the door in a left side, its structure is symmetrical with fig. 2.

The casing 1 is a cuboid structure, and a lock bolt 2, a coil 3, a movable iron core 4, a fixed iron core 5 and a control switch 9 are arranged inside the casing. The level is arranged about set bar 2, and both ends all outwards stretch out from casing 1 inside about set bar 2, and wherein, be close to door frame one end and be the left end, the left end of set bar 2 is the spring bolt, can stretch into in the door frame hole 7 of opening on the door frame left behind the through-hole on the casing 1 to pin high-voltage switch cabinet door. The end of the lock bolt 2 far away from the door frame is the right end, a handle 14 is fixedly arranged on the right end of the lock bolt 2, and the handle 14 is arranged outside the shell 1 and has a gap with the shell 1. The right side wall of the inner surface of the shell 1 and the step surface of the lock bolt 2 are sleeved with a lock bolt spring 8, when the handle 14 is pulled rightwards, the lock bolt spring 8 is compressed, and meanwhile, the lock bolt 2 is separated from the door frame hole 7, so that unlocking is realized.

The coil 3 is arranged below the latch 2 with its central axis horizontally arranged left and right in accordance with the moving direction of the latch 2, and the coil 3 is fixedly attached to the inner surface of the housing. The movable iron core 4, the iron core spring 10 and the fixed iron core 5 are sleeved in a central through hole of the coil 3, wherein the movable iron core 4 is arranged on the left side, the fixed iron core 5 is arranged opposite to the movable iron core 4, and the fixed iron core 5 is fixedly connected to the right side wall of the inner surface of the shell 1 on the right side. Connected between the movable iron core 4 and the fixed iron core 5 is an iron core spring 10, and the central axis of the coil 3 is collinear with the central axes of the movable iron core 4, the fixed iron core 5 and the iron core spring 10.

The left side below of movable iron core 4 sets up fixed pin axle 11 and torsional spring 12, and fixed pin axle 11 is perpendicular with the central axis of coil 3, and the front and back level is arranged, and fixed pin axle 11's both ends fixed connection is on the lateral wall around the casing 1 internal surface. The outside of the fixed pin shaft 11 is sleeved with a torsion spring 12, and the torsion spring 12 and the fixed pin shaft 11 have the same axle center. The lower leg of torsional spring 12 is fixed connection on fixed pin 11 or fixed connection on casing 1 internal surface, and the last leg of torsional spring 12 upwards extends, goes up the positive left side of leg upwards through movable iron core 4, until extending to the left side top of movable iron core 4. The upper end of the upper support leg is provided with a ball head 13, the lower surface of the lock bolt 2 is provided with a spherical groove 6, the inner diameter of the spherical groove 6 is slightly larger than the outer diameter of the ball head 13, and the ball head 13 can extend into the spherical groove 6.

In the closed position of the locking bolt 2, the ball 13 projects into the spherical recess 6, the spherical recess 6 and the ball 13 both being located above the left side of the movable core 4.

The lower left side of the interior of the shell 1 is provided with a control switch 9, the control switch 9 is connected with the coil 3 through a control line, the control switch 9 is connected with an external power supply at the same time, and the control switch 9 can control the energization and the deenergization of the coil 3.

Fig. 2 shows that the utility model discloses at the state of shutting, set bar 2 is at the leftmost end this moment, and the spring bolt stretches in door frame hole 7, and control switch 9 control coil 3 is in the outage state, and fixed iron core 5 is kept away from to movable iron core 4, and iron core spring 10 has certain pre-pressure. Under the effect of iron core spring 10, the left end contact of activity iron core 4 just acts on the last stabilizer blade of torsional spring 12 in the last stabilizer blade of torsional spring 12, gives torsional spring 12 thrust left, makes the last stabilizer blade of torsional spring 12 along anticlockwise rotation, drives bulb 13 and just in time gets into spherical recess 6 after rotating to pin set bar 2, realize the reliable closing of high tension switchgear door.

The utility model discloses during the unblock, give 3 circular telegrams of coil through control switch 9, fixed iron core 5 and the actuation of movable iron core 4 mutually make movable iron core 4 overcome the effort of iron core spring 10 and leave torsional spring 12 to horizontal migration right, torsional spring 12's last support is along clockwise rotation, drives bulb 13 and breaks away from spherical recess 6, can untie set bar 2. The operator pulls the handle 14, which drives the lock bolt 2 to move rightwards, so that the lock bolt 2 is separated from the door frame hole 7, and the switch cabinet door can be opened.

The utility model discloses in, torsional spring 12's last support is being designed into the plane shape with movable iron core 4 contact department, and is also facing to 4 left ends of movable iron core and is the plane shape, and 4 left ends of movable iron core department are circular or square, make both contact surfaces big, the contact is reliable.

Claims

1. The utility model provides a high tension switchgear cabinet door blocking device, its outside is casing (1), and casing (1) is inside to set up set bar (2), coil (3), movable iron core (4) and fixed iron core (5), characterized by: the coil (3) is arranged below the lock bolt (2), the central shaft is horizontally arranged left and right and is consistent with the moving direction of the lock bolt (2), the coil (3) is fixedly connected to the inner surface of the shell (1), a movable iron core (4), an iron core spring (10) and a fixed iron core (5) are sleeved in a central through hole of the coil (3), the movable iron core (4) is arranged on the left side, the fixed iron core (5) is arranged on the right side, the fixed iron core (5) is fixedly connected to the right side wall of the inner surface of the shell (1), the iron core spring (10) is connected between the movable iron core (4) and the fixed iron core (5), a fixed pin shaft (11) is arranged below the left side of the movable iron core (4), the fixed pin shaft (11) is vertical to the central shaft of the coil (3), a torsion spring (12) is sleeved outside the fixed pin shaft (11), an upper support of the torsion spring (12) extends upwards through the right left side of the movable iron core (4) to the upper side of the movable iron core (4), the upper end of the upper supporting leg is provided with a ball head (13), the lower surface of the lock bolt (2) is provided with a spherical groove (6), and the ball head (13) can extend into the spherical groove (6).

2. The high voltage switch cabinet door latching device of claim 1, wherein: the upper leg of the torsion spring (12) is planar at the left end facing the movable iron core (4).

3. The high-voltage switch cabinet door locking device according to claim 1, characterized in that: the torsion spring (12) and the fixed pin shaft (11) are coaxial, and the lower support of the torsion spring (12) is fixedly connected to the fixed pin shaft (11) or the inner surface of the shell (1).

4. The high-voltage switch cabinet door locking device according to claim 1, characterized in that: the left end and the right end of the lock bolt (2) are bolt bolts, the bolt bolts pass through the through holes in the shell (1) and then can extend into the door frame holes (7) formed in the door frame leftwards, the right end of the lock bolt (2) is fixedly connected with a handle (14), the handle (14) is arranged outside the shell (1), and the right side wall of the inner surface of the shell (1) and the step surface of the lock bolt (2) are sleeved with a lock bolt spring (8).

5. The high-voltage switch cabinet door locking device according to claim 1, characterized in that: the central axis of the coil (3) is collinear with the central axes of the movable iron core (4), the fixed iron core (5) and the iron core spring (10).

6. The high-voltage switch cabinet door locking device according to claim 1, characterized in that: the left lower part inside the shell (1) is provided with a control switch (9), the control switch (9) is connected with the coil (3) through a control line, and the control switch (9) is connected with an external power supply.

7. The high voltage switch cabinet door latching device of claim 1, wherein: the control switch (9) is connected with the coil (3) through a control line, and the control switch (9) is simultaneously connected with an external power supply.