CN216142560U - Locomotive high-voltage electric appliance cabinet maintenance locking structure - Google Patents
Locomotive high-voltage electric appliance cabinet maintenance locking structure Download PDFInfo
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- CN216142560U CN216142560U CN202122242178.5U CN202122242178U CN216142560U CN 216142560 U CN216142560 U CN 216142560U CN 202122242178 U CN202122242178 U CN 202122242178U CN 216142560 U CN216142560 U CN 216142560U
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Abstract
The utility model discloses an overhauling and locking structure of a locomotive high-voltage electric appliance cabinet, which comprises a cabinet door locking mechanism and a high-voltage power supply, wherein the cabinet door locking mechanism is connected with the high-voltage power supply in an interlocking manner. The utility model solves the problem that the open-close state of the electric appliance cabinet door is not correlated with the on-off state of the locomotive high-voltage power supply in the prior art, so that the electric shock risk is caused.
Description
Technical Field
The utility model relates to the technical field of railway locomotives, in particular to an overhauling and locking structure of a locomotive high-voltage electric appliance cabinet.
Background
A triangular or quadrangular cylinder lock is usually arranged at the cabinet door of the electrical cabinet of the internal combustion locomotive, and a cylinder lock can be arranged under few conditions. When the locomotive normally runs, the doors of the cabinet are locked by the locks, so that the dust resistance and the safety protection of the electric appliance cabinet can be improved; when the locomotive is overhauled, the cabinet door can be opened after the corresponding key is used for unlocking, and then maintenance operation can be carried out. However, both the common triangular or quadrangular cylinder lock and the spring lock have a problem that the opening and closing state of the electric appliance cabinet door is not correlated with the on-off state of the high-voltage power supply of the locomotive, and particularly when the high-voltage electric appliance equipment of the locomotive is arranged in the electric appliance cabinet, the following safety risks exist in the maintenance process:
1) under the normal condition, before opening high-tension apparatus cabinet door, must cut off the cutter car high-voltage power supply earlier, nevertheless in actual maintenance work, because of the key is managed by the maintainer by oneself, the condition of not operating according to the requirement appears easily, does not cut off high-voltage power supply promptly and open the cabinet door and overhaul the operation, this will very easily arouse the electric shock accident. Especially, a triangular or quadrangular cylindrical lock is used in part of the high-voltage electric appliance cabinets, the key matched with the lock has strong universality, and the lock of a plurality of electric appliance cabinet doors can be opened by one key, so that the electric shock risk is increased.
2) When two or more maintainers carry out maintenance operation simultaneously, the key is kept by one of them maintainer usually, only relies on regulation and control to restrict the maintainer action and can not ensure safety completely, for example when having the maintainer and being in the operation in high-voltage electrical cabinet, other personnel maloperation switch on high voltage power supply, will probably arouse the electric shock accident very much.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides an overhauling and locking structure of a locomotive high-voltage electric appliance cabinet, which solves the problems of electric shock risks and the like caused by the fact that the opening and closing states of an electric appliance cabinet door are not correlated with the opening and closing states of a locomotive high-voltage power supply in the prior art.
The technical scheme adopted by the utility model for solving the problems is as follows:
the locomotive high-voltage electric appliance cabinet maintenance locking structure comprises a cabinet door locking mechanism and a high-voltage power supply, wherein the cabinet door locking mechanism is connected with the high-voltage power supply in an interlocking manner.
The cabinet door locking mechanism is connected with the high-voltage power supply in an interlocking manner, and the locking or unlocking state of the cabinet door locking mechanism is connected with the on-off state of the high-voltage power supply in an interlocking manner, so that the on-off state of the high-voltage power supply can be controlled to be connected in an interlocking manner through the locking or unlocking state of the cabinet door locking mechanism. Specifically, the unlock state of the cabinet door lock mechanism corresponds to the off state of the high voltage power supply. When the high-voltage power supply is disconnected, the cabinet door locking mechanism can be unlocked, and the high-voltage power supply can be continuously disconnected as long as the cabinet door locking mechanism is unlocked. This has just effectively prevented not cutting off high voltage power supply and just opened high-tension apparatus cabinet door maintenance operation to the electric shock risk that arouses from this has been reduced by a wide margin.
As a preferred technical scheme, the cabinet door locking mechanism includes a door frame and a cabinet door, a cabinet door locking member is disposed on the cabinet door, a door frame locking member engaged with the cabinet door locking member is disposed on the door frame, and the cabinet door locking member and the door frame locking member can be locked or unlocked in the opening and closing process of the cabinet door.
The door frame and the cabinet door are effectively controlled to be locked or unlocked, and a structure connected with the high-voltage power supply in an interlocking mode is convenient to arrange.
As a preferred technical scheme, the cabinet door locking part comprises a push rod, a baffle plate and a first spring, an installation frame is fixedly connected to the cabinet door, a knock pin is hinged to the cabinet door, the push rod, the baffle plate and one end of the first spring are sequentially connected, the other end of the first spring is connected with the installation frame, and the knock pin can push the push rod to move towards a direction close to the installation frame in the closing process of the cabinet door; the door frame locking piece comprises a door lock arranged on the door frame, the door lock is connected with a lock rod, and the lock rod can be driven to move towards or away from the baffle plate in the opening and closing process of the door lock; and the baffle plate is provided with a baffle plate hole, and the lock rod is matched with the baffle plate hole.
In the opening and closing process of the cabinet door, the lock rod moves towards the direction close to or far away from the baffle plate, and the lock rod is inserted into or leaves the baffle plate hole, so that the structure connected with the high-voltage power supply in an interlocking manner is convenient to set.
As a preferred technical scheme, a door frame hole is formed in the door frame, a cabinet door hole is formed in the cabinet door, and the lock rod, the baffle hole, the door frame hole and the cabinet door hole are matched with each other.
The setting of door frame hole, cabinet door hole has further guaranteed the stability when door frame and cabinet door locking, is also convenient for detect the state of door frame and cabinet door more.
As a preferred technical solution, the door lock is a cylinder lock.
The spring lock has wide application and convenient operation.
As a preferred technical scheme, the door lock comprises a lock core and a lock body sleeved outside the lock core, wherein the lock core is provided with a plug hole, the side surface of the lock core is provided with a plurality of lock core holes, lock core balls extending into the plug hole are fixedly connected in the lock core holes, the side surface of the lock body is provided with a lock body hole matched with the lock core holes, the bottom of the lock body hole is connected with a spring, and the spring is connected with lock body balls.
When the door lock is in a locking state, the lock core marble can push the lock body marble at the corresponding position to act, and at the moment, if a key is pulled out, the key flange sequentially pushes the lock core marble and the lock body marble to extrude the spring, so that the key can be pulled out smoothly; when the lock core rotates to the state that the door lock is unlocked, the lock core marble is blocked by the inner wall of the lock body, and at the moment, if a key is pulled out, the key flange can not push the lock core marble, and the key is clamped by the lock core marble and can not be pulled out.
As a preferred technical scheme, the length of the lock cylinder pin closest to the opening of the plugging hole extending into the plugging hole is larger than the length of other lock cylinder pins extending into the plugging hole.
When the lock core rotates to the state that the door lock is unlocked, the lock core marble is blocked by the inner wall of the lock body, and at the moment, if a key is pulled out, the key is clamped by the lock core marble closest to the opening of the plugging hole and cannot be pulled out. Due to the action of the lock cylinder marble closest to the opening of the plugging hole, the displacement of the key can be reduced as much as possible, and the locking effect is better ensured.
As a preferred technical scheme, the door lock further comprises a change-over switch electrically connected with the high-voltage power supply, the change-over switch is connected with the door lock in an interlocking manner, and when the door lock is in an unlocking state, the change-over switch is disconnected and the high-voltage power supply is in a disconnection state.
The change-over switch has the advantages of small volume, reliable performance, convenient operation, flexible installation and the like, and has better function of isolating electric connection.
Compared with the prior art, the utility model has the following beneficial effects:
(1) the cabinet door locking mechanism is in interlocking connection with the high-voltage power supply, and the locking or unlocking state of the cabinet door locking mechanism is in interlocking connection with the on-off state of the high-voltage power supply, so that the on-off state of the high-voltage power supply can be controlled through the locking or unlocking state of the cabinet door locking mechanism; specifically, the unlocking state of the cabinet door locking mechanism corresponds to the disconnection state of the high-voltage power supply; the cabinet door locking mechanism can be in an unlocking state only when the high-voltage power supply is disconnected, or the high-voltage power supply can be in a disconnection state as long as the cabinet door locking mechanism is in a locking state; the high-voltage electric appliance cabinet door is effectively prevented from being opened to overhaul without cutting off the high-voltage power supply, so that the electric shock risk caused by the opening is greatly reduced;
(2) the door frame and the cabinet door are effectively controlled to be locked or unlocked, and a structure which is connected with the high-voltage power supply in an interlocking manner is convenient to arrange;
(3) in the opening and closing process of the cabinet door, the lock rod moves towards the direction close to or far away from the baffle plate, and a structure connected with the high-voltage power supply in an interlocking manner is conveniently arranged according to the fact that the lock rod is inserted into or separated from the baffle plate hole;
(4) the arrangement of the door frame hole and the cabinet door hole further ensures the stability of the door frame and the cabinet door when the door frame and the cabinet door are locked, and is more convenient for detecting the states of the door frame and the cabinet door;
(5) the cylinder lock has wide application and convenient operation;
(6) when the door lock is in a locking state, the lock core marble can push the lock body marble at the corresponding position to act, and at the moment, if a key is pulled out, the key flange sequentially pushes the lock core marble and the lock body marble to extrude the spring, so that the key can be pulled out smoothly; when the lock core rotates to the state that the door lock is unlocked, the lock core marble is blocked by the inner wall of the lock body, and at the moment, if a key is pulled out, the key flange cannot push the lock core marble, and the key is clamped by the lock core marble and cannot be pulled out;
(7) when the lock core rotates to the state that the door lock is unlocked, the lock core marble is blocked by the inner wall of the lock body, and at the moment, if a key is pulled out, the key is clamped by the lock core marble closest to the opening of the plugging hole and cannot be pulled out; due to the action of the lock cylinder marble closest to the opening of the plugging hole, the displacement of the key can be reduced as much as possible, so that the locking effect is better ensured;
(8) the change-over switch has the advantages of small volume, reliable performance, convenient operation, flexible installation and the like, and has better function of isolating electric connection.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a lock bar region when the cabinet door is in a closed state;
FIG. 3 is a schematic structural view of the door lock of the present invention in a locked state;
fig. 4 is a schematic structural view of the door lock in an unlocked state.
Reference numbers and corresponding part names in the drawings: 1. the lock comprises a lock body, 2, a lock core, 3, a long marble, 4, a key, 5, a lock body marble, 6, a spring, 7, a lock core marble, 11, a lock body hole, 20, a plugging hole, 21, a lock core hole, 31, a top pin, 32, a push rod, 33, a baffle, 34, a door lock, 35, a door frame, 36, a lock rod, 37, a first spring, 38, a mounting frame, 39, a cabinet door, 331, a baffle hole, 351, a door frame hole, 391 and a cabinet door hole.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited to these examples.
It should be noted that the high-voltage electrical cabinet of the present invention mainly refers to an electrical cabinet with an ac voltage greater than 1000V and/or a dc voltage greater than 1500V.
Example 1
As shown in fig. 1 to 4, an overhaul locking structure for a locomotive high-voltage electrical appliance cabinet comprises a cabinet door locking mechanism and a high-voltage power supply, wherein the cabinet door locking mechanism is connected with the high-voltage power supply in an interlocking manner.
The cabinet door locking mechanism is connected with the high-voltage power supply in an interlocking manner, and the locking or unlocking state of the cabinet door locking mechanism is connected with the on-off state of the high-voltage power supply in an interlocking manner, so that the on-off state of the high-voltage power supply can be controlled to be connected in an interlocking manner through the locking or unlocking state of the cabinet door locking mechanism. Specifically, the unlock state of the cabinet door lock mechanism corresponds to the off state of the high voltage power supply. When the high-voltage power supply is disconnected, the cabinet door locking mechanism can be unlocked, and the high-voltage power supply can be disconnected as long as the cabinet door locking mechanism is locked. This has just effectively prevented not cutting off high voltage power supply and just opened high-tension apparatus cabinet door maintenance operation to the electric shock risk that arouses from this has been reduced by a wide margin.
As a preferred technical solution, the cabinet door locking mechanism includes a door frame 35 and a cabinet door 39, the cabinet door 39 is provided with a cabinet door locking member, the door frame 35 is provided with a door frame locking member engaged with the cabinet door locking member, and the cabinet door 39 can lock or unlock the cabinet door locking member and the door frame locking member in the opening and closing process.
This effectively controls the locking or unlocking of the door frame 35 and the cabinet door 39, facilitating the provision of a structure for interlocking connection with the high voltage power supply.
As a preferable technical solution, the cabinet door locking member includes a push rod 32, a baffle 33, and a first spring 37, an installation frame 38 is fixedly connected to the cabinet door 39, a knock pin 31 is hinged to the cabinet door 39, one end of the push rod 32, the baffle 33, and the first spring 37 are connected in sequence, the other end of the first spring 37 is connected to the installation frame 38, and the knock pin 31 can push the push rod 32 to move toward the installation frame 38 in the closing process of the cabinet door 39; the door frame locking piece comprises a door lock 34 arranged on the door frame 35, the door lock 34 is connected with a lock rod 36, and the door lock 34 can drive the lock rod 36 to move towards or away from the baffle 33 in the opening and closing process; the baffle 33 is provided with a baffle hole 331, and the lock lever 36 is matched with the baffle hole 331.
In the opening and closing process of the cabinet door 39, the lock rod 36 moves towards the direction close to or away from the baffle 33, and a structure connected with the high-voltage power supply in an interlocking manner is conveniently arranged according to the fact that the lock rod 36 is inserted into or separated from the baffle hole 331.
As a preferable technical solution, a door frame hole 351 is formed in the door frame 35, a cabinet door hole 391 is formed in the cabinet door 39, and the lock lever 36, the baffle hole 331, the door frame hole 351, and the cabinet door hole 391 are engaged with each other.
The setting of door frame hole 351, cabinet door hole 391 has further guaranteed the stability when door frame 35 and cabinet door 39 lock, also is convenient for detect door frame 35 and cabinet door 39's state more.
Example 2
As shown in fig. 1 to 4, as a further optimization of embodiment 1, this embodiment includes all the technical features of embodiment 1, and in addition, this embodiment further includes the following technical features:
as a preferred technical solution, the door lock is a cylinder lock.
The spring lock has wide application and convenient operation.
As a preferred technical scheme, the door lock comprises a lock cylinder 2 and a lock body 1 sleeved outside the lock cylinder 2, wherein the lock cylinder 2 is provided with a plug hole 20, the side surface of the lock cylinder 2 is provided with a plurality of lock cylinder holes 21, lock cylinder pins 7 extending into the plug hole 20 are fixedly connected in the lock cylinder holes 21, the side surface of the lock body 1 is provided with a lock body hole 11 matched with the lock cylinder holes 21, the bottom of the lock body hole 11 is connected with a spring 6, and the spring 6 is connected with lock body pins 5.
When the door lock is in a locking state, the lock core marble 7 can push the lock body marble 5 at the corresponding position to act, and at the moment, if the key 4 is pulled out, the flange of the key 4 sequentially pushes the lock core marble 7 and the lock body marble 5 to extrude the spring 6, so that the key 4 can be smoothly pulled out; when the lock core 2 rotates to the state that the door lock is unlocked, the lock core marble 7 is blocked by the inner wall of the lock body 1, at the moment, if the key 4 is pulled out, the flange of the key 4 cannot push the lock core marble 7, and the key 4 is clamped by the lock core marble 7 and cannot be pulled out.
As a preferred technical solution, the length of the plug pin 7 closest to the opening of the plug hole 20 extending into the plug hole 20 is greater than the length of the other plug pins 7 extending into the plug hole 20.
When the lock core 2 rotates to the state that the door lock is unlocked, the lock core marble 7 is blocked by the inner wall of the lock body 1, and at the moment, if the key 4 is pulled out, the key 4 is clamped by the lock core marble 7 closest to the opening of the plugging hole 20 and cannot be pulled out. Due to the action of the lock cylinder pin 7 closest to the opening of the plugging hole 20, the displacement of the key 4 can be reduced as much as possible, and the locking effect can be better ensured. The long pin 3 in the drawings shows the length of the lock cylinder pin 7 which is closest to the opening of the plug hole 20 and extends into the plug hole 20.
As a preferable technical solution, the portable terminal further includes a change-over switch electrically connected to the high-voltage power supply, the change-over switch is interlockingly connected to the door lock 34, and when the door lock 34 is in an unlocked state, the change-over switch is turned off and the high-voltage power supply is in a turned-off state.
The change-over switch has the advantages of small volume, reliable performance, convenient operation, flexible installation and the like, and has better function of isolating electric connection.
Example 3
As shown in fig. 1 to 4, this embodiment provides a more detailed implementation manner on the basis of embodiments 1 and 2.
The utility model is integrally installed in an electric appliance cabinet and mainly comprises a top pin 31, a push rod 32, a baffle 33, a first spring 37, a door lock 34, an installation frame 38 and the like. The front part of the top pin 31 is designed into an inclined plane structure, and is installed on the electric appliance cabinet door 39 far away from the hinge side, and the proper length and the inclination angle are designed through calculation, so that when the cabinet door 39 is closed to form an included angle with the door frame 35 smaller than 2 degrees, the top pin 31 can push the push rod 32 to move along the arrow direction shown in the figure. The push rod 32 and the shutter 33 are integrally configured, and the shutter 33 synchronously operates to compress the first spring 37 when the push rod 32 operates. The baffle 33 is provided with a circular hole (baffle hole 331), after the door 39 is completely closed, the baffle 33 is pushed to the right limit position in fig. 1, the circular hole on the baffle 33 coincides with the door frame hole 351 on the door frame 35 of the electrical appliance cabinet and the door hole 391 reserved on the door 39, as shown in fig. 2, at this time, the lock rod 36 can pass through the baffle 33 and the hole on the door frame 35 to lock the door 39. When the door 39 is opened, the knock pin 31 gradually retreats along with the rotation of the door 39, the baffle 33 moves in the direction opposite to the arrow shown in fig. 1 under the action of the force of the first spring 37, and the round hole on the baffle 33 is gradually staggered with the frame hole 351 on the door frame 35. When the cabinet door 39 is opened to form an included angle with the door frame 35 larger than 2 degrees, the knock pin 31 is completely withdrawn, the baffle 33 is pushed to the left limit position in fig. 1 by the first spring 37, the door frame hole 351 in the door frame 35 is completely closed by the baffle 33, at this time, the lock rod 36 is blocked by the baffle 33, and the door lock 34 cannot be locked.
The door lock 34 is matched with a common spring lock, each locomotive carries out maintenance safety management on a high-voltage system by using the same key 4, and the key 4 can open a safety isolation conversion switch lock of a locomotive power generation system and can also open the door lock 34 of a high-voltage electric appliance cabinet. The first marble at the end of the lock core 2 is a long marble, and the length of the long marble is greater than that of other marbles on the lock core 2. When the door lock 34 is in a closed state, the lock rod 36 is pushed out, the lock cylinder 2 is in a locking position, the structure is shown in fig. 3, the pins on the lock cylinder 2 are respectively aligned with the pins on the lock body 1, at this time, if the key 4 is pulled out, the flange of the key 4 sequentially pushes the corresponding pins on the lock cylinder 2 and the lock body 1 to be lifted and extrude the second spring 6, and the key 4 can be pulled out smoothly; when the door lock 34 is in an 'open' state, the lock rod 36 is pushed in, the lock cylinder 2 rotates to an unlocking position, the marble on the lock cylinder 2 is blocked by the inner wall of the lock body 1, at the moment, if the key 4 is pulled out, the flange of the key 4 cannot push the long marble to be lifted, and the key 4 is clamped by the long marble and cannot be pulled out. In addition, the door lock 34 can drive the lock rod 36 to push out or push in the lock core 2, but cannot drive the lock core 2 to rotate by pushing the lock rod 36.
When the locomotive normally runs, the high-voltage electric appliance cabinet door lock 34 is in a closed state, the lock rod 36 is pushed out, the cabinet door 39 is limited by the lock rod 36 and reliably closed, the safety isolation change-over switch of the locomotive power generation system is arranged at an open position, the high-voltage electric appliance cabinet is connected with the power supply of the power generation system, and the key 4 is clamped on the lock cylinder 2 and cannot be pulled out when the safety isolation change-over switch is arranged at the open position.
When the high-voltage electrical cabinet is overhauled, the safety isolation change-over switch is firstly placed at an off position to take the key 4, so that a high-voltage power supply of a locomotive power generation system is cut off. When the maintainer opens the door lock 34 by using the key 4, the lock rod 36 is pushed in, the cabinet door 39 and the baffle plate 33 lose the limit of the lock rod 36, then the cabinet door 39 of the electric appliance cabinet is opened, the top pin 31 is withdrawn along with the rotation of the cabinet door 39, and the baffle plate 33 acts under the action of the force of the second spring 6 and closes the lock rod hole on the door frame 35. After the cabinet door 39 is opened, the lock rod 36 is blocked by the baffle 33, the door lock 34 cannot be put into the closed state by rotating the key 4, and the key 4 is clamped by the long marble and cannot be pulled out. After the overhaul is finished, the cabinet door 39 is closed, the baffle plate 33 acts under the thrust action of the ejector pin 31, when the cabinet door 39 is completely closed, the round hole in the baffle plate 33 is overlapped with the lock rod holes reserved on the door frame 35 and the cabinet door 39, the door lock 34 is closed by rotating the key 4, the lock rod 36 is pushed out, the cabinet door 39 is locked by the lock rod 36, the door lock 34 enters a closed state, and the key 4 is pulled out. When the key 4 is inserted into the safety isolation change-over switch again and is placed in the 'on' position, the high-voltage power supply of the locomotive can be connected into the high-voltage electric appliance cabinet. Therefore, in the whole process of opening the high-voltage electric appliance cabinet door 39, the key 4 is always clamped on the door lock 34 and cannot be taken away, so that the condition that the power supply in the high-voltage electric appliance cabinet is not switched on in the maintenance process is effectively ensured.
In the utility model, the opening and closing state of the cabinet door 39 of the locomotive high-voltage electrical appliance cabinet is correlated with the opening and closing state of the locomotive high-voltage power supply, and the opening and closing state of the cabinet door 39 is effectively managed. If the high-voltage power supply of the locomotive is not cut off, the key 4 cannot be taken, and the cabinet door 39 of the high-voltage electrical cabinet cannot be opened, so that the condition that the cabinet door 39 is opened to overhaul operation without cutting off the high-voltage power supply is effectively avoided. Meanwhile, the utility model selects the spring lock as the door lock 34, so that each locomotive high-voltage electrical cabinet can be opened only by one unique key 4, and the condition of unlocking by other universal keys 4 is effectively avoided.
In the utility model, after the door 39 of the high-voltage electrical appliance cabinet is opened, the key 4 is always clamped on the door lock 34 and cannot be taken out by any person, so that the high-voltage power supply of the locomotive cannot be switched on in the whole process of opening the door 39 of the high-voltage electrical appliance cabinet, and the safety of maintainers is protected.
According to the utility model, the maintenance locking mechanism of the locomotive high-voltage electrical cabinet can ensure that the key 4 cannot be pulled out even if the cabinet door 39 is only slightly opened, so that the risk of carrying out live-wire operation by opening the door at a small angle is eliminated.
In the utility model, an internal installation mode is adopted, so that violent dismantling for unlocking can be effectively avoided. In addition, the maintenance locking mechanism of the locomotive high-voltage electrical cabinet is simple and small in structure and can be applied to all locomotive high-voltage electrical equipment cabinets such as an electrical cabinet, a traction converter cabinet, a charging box and an inductance box.
As described above, the present invention can be preferably realized.
The foregoing is only a preferred embodiment of the present invention, and the present invention is not limited thereto in any way, and any simple modification, equivalent replacement and improvement made to the above embodiment within the spirit and principle of the present invention still fall within the protection scope of the present invention.
Claims (6)
1. The maintenance locking structure of the locomotive high-voltage electric appliance cabinet is characterized by comprising a cabinet door locking mechanism and a high-voltage power supply, wherein the cabinet door locking mechanism is connected with the high-voltage power supply in an interlocking manner;
the cabinet door locking mechanism comprises a door frame (35) and a cabinet door (39), a cabinet door locking piece is arranged on the cabinet door (39), a door frame locking piece matched with the cabinet door locking piece is arranged on the door frame (35), and the cabinet door (39) can lock or unlock the cabinet door locking piece and the door frame locking piece in the opening and closing process;
the cabinet door locking piece comprises a push rod (32), a baffle (33) and a first spring (37), an installation frame (38) is fixedly connected to a cabinet door (39), a knock pin (31) is hinged to the cabinet door (39), one ends of the push rod (32), the baffle (33) and the first spring (37) are sequentially connected, the other end of the first spring (37) is connected with the installation frame (38), and in the closing process of the cabinet door (39), the knock pin (31) can push the push rod (32) to move towards the direction close to the installation frame (38); the door frame locking piece comprises a door lock (34) arranged on the door frame (35), the door lock (34) is connected with a lock rod (36), and the door lock (34) can drive the lock rod (36) to move towards or away from the baffle (33) in the opening and closing process; baffle hole (331) is equipped with on baffle (33), locking lever (36) with baffle hole (331) cooperation.
2. The locomotive high-voltage electrical cabinet maintenance locking structure according to claim 1, wherein a door frame hole (351) is formed in the door frame (35), a cabinet door hole (391) is formed in the cabinet door (39), and the locking rod (36), the baffle hole (331), the door frame hole (351) and the cabinet door hole (391) are mutually matched.
3. The locomotive high-voltage electrical cabinet overhaul locking structure according to claim 2, wherein the door lock (34) is a pin tumbler lock.
4. The overhaul locking structure of the locomotive high-voltage electric appliance cabinet according to claim 3, wherein the door lock (34) comprises a lock cylinder (2) and a lock body (1) sleeved outside the lock cylinder (2), the lock cylinder (2) is provided with a plugging hole (20), the side surface of the lock cylinder (2) is provided with a plurality of lock cylinder holes (21), lock cylinder pins (7) extending into the plugging hole (20) are fixedly connected in the lock cylinder holes (21), the side surface of the lock body (1) is provided with a lock body hole (11) matched with the lock cylinder holes (21), the bottom of the lock body hole (11) is connected with a second spring (6), and the second spring (6) is connected with a lock body pin (5).
5. The overhaul locking structure for the locomotive high-voltage electric appliance cabinet, according to claim 4, wherein the length of the lock cylinder pins (7) closest to the opening of the plugging hole (20) extending into the plugging hole (20) is greater than the length of the other lock cylinder pins (7) extending into the plugging hole (20).
6. The locomotive high-voltage electric cabinet maintenance locking structure according to claim 5, further comprising a transfer switch electrically connected with the high-voltage power supply, wherein the transfer switch is interlockingly connected with the door lock (34), and when the door lock (34) is in an unlocked state, the transfer switch is disconnected and the high-voltage power supply is in a disconnected state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122242178.5U CN216142560U (en) | 2021-09-16 | 2021-09-16 | Locomotive high-voltage electric appliance cabinet maintenance locking structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122242178.5U CN216142560U (en) | 2021-09-16 | 2021-09-16 | Locomotive high-voltage electric appliance cabinet maintenance locking structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216142560U true CN216142560U (en) | 2022-03-29 |
Family
ID=80811982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122242178.5U Active CN216142560U (en) | 2021-09-16 | 2021-09-16 | Locomotive high-voltage electric appliance cabinet maintenance locking structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216142560U (en) |
-
2021
- 2021-09-16 CN CN202122242178.5U patent/CN216142560U/en active Active
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