CN118016457A - Switch operation shaft locking device and switch cabinet - Google Patents
Switch operation shaft locking device and switch cabinet Download PDFInfo
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- CN118016457A CN118016457A CN202410165532.4A CN202410165532A CN118016457A CN 118016457 A CN118016457 A CN 118016457A CN 202410165532 A CN202410165532 A CN 202410165532A CN 118016457 A CN118016457 A CN 118016457A
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- shaft
- stop
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- 230000000903 blocking effect Effects 0.000 claims description 36
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000013112 stability test Methods 0.000 description 25
- 230000003068 static effect Effects 0.000 description 15
- 238000012360 testing method Methods 0.000 description 11
- 230000006872 improvement Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000005520 electrodynamics Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
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Abstract
The invention relates to the technical field of electrical cabinets, in particular to a switch operation shaft locking device and a switch cabinet.
Description
Technical Field
The invention relates to the technical field of electrical cabinets, in particular to a switch operation shaft locking device and a switch cabinet.
Background
The grounding switch is one of the core parts of the switch cabinet, and plays an important role in connecting a main loop with a main grounding network of a power station, releasing static electricity of equipment to be overhauled and the loop, preventing reverse power transmission or false power transmission and ensuring the safety of operation and inspection personnel and equipment. The switchgear should be subjected to a dynamic thermal stability test to verify its ability to carry rated peak withstand currents and rated short withstand currents.
The dynamic-thermal stability test, namely the rated peak withstand current and the rated short-time withstand current test, is a test for detecting the capacity of an electric product to generate electrodynamic force and thermal effect when the short-circuit current is born by the electric product when the circuit fails, and is currently used as one of the necessary test items of the special spot check of the switch cabinet.
In the dynamic and thermal stability test, the rated peak withstand current test is generally performed according to the sequence of the rated short-time withstand current test, and when the rated peak withstand current passes through the grounding switch, the contact cannot be kept at the closing position due to electrodynamic force, the dynamic and static contacts are separated to generate arcing, and the dynamic and static contact positions are burnt to cause test failure. Based on the problems, the currently adopted improvement means is to increase the clamping force of the movable contact and the fixed contact, so that the friction force of the movable contact and the fixed contact is increased, and the requirements of closing and holding when the peak withstand current flows in the grounding switch can be met, thereby ensuring smooth passing of a dynamic thermal stability test.
However, the improvement means increases the operating force of the grounding switch, so that the moving and static contacts are difficult to separate after the dynamic and thermal stability test is finished, and the operation is very inconvenient.
Disclosure of Invention
The invention aims to provide a locking device for a switch operation shaft, which solves the problems that in the prior art, the moving and static contacts are separated in a dynamic thermal stability test in a mode of increasing the clamping force of the moving and static contacts, and the moving and static contacts are separated more difficultly after the dynamic thermal stability test passes, so that the operation is inconvenient. The invention also aims to provide a switch cabinet, which solves the problems that in the prior art, the moving and static contacts are separated in a dynamic and thermal stability test in a mode of increasing the clamping force of the moving and static contacts, and the moving and static contacts are separated more difficultly after the dynamic and thermal stability test is passed, so that the operation is inconvenient.
In order to achieve the above purpose, the technical scheme of the switch operation shaft locking device provided by the invention is as follows: the switch operation shaft locking device comprises a cabinet body, an operation shaft of a grounding switch rotatably arranged in the cabinet body, the operation shaft extends forwards and backwards, the front end of the operation shaft extends to the front side wall of the cabinet body, an operation hole is formed in the front side wall of the cabinet body at the front end position corresponding to the operation shaft, a blocking structure arranged on the operation shaft and a locking piece arranged beside the operation shaft, the locking piece is movably arranged in the cabinet body along the axial direction of the operation shaft, a locking position matched with the blocking structure to realize the rotation stopping of the operation shaft and an unlocking position for avoiding the blocking structure to release the rotation stopping of the operation shaft are arranged in the guiding movable stroke of the locking piece, the unlocking position is located at one side of the locking position far away from the operation hole, the locking piece is provided with an elastic piece for providing acting force towards the locking position, and the locking piece is provided with a pushing end corresponding to the operation hole and is pushed backwards to the unlocking position by the opening operation handle when the opening operation handle is inserted on the operation shaft from the operation hole.
As a further improvement, the stop structure comprises a stop sleeve fixedly arranged on the operation shaft, a notch extending forwards axially from the rear end face of the stop sleeve is arranged on the outer peripheral surface of the stop sleeve, a lock tongue corresponding to the notch in the axial direction is arranged on the lock piece, the lock tongue stretches into the notch when in locking position and stops rotating the operation shaft through the stop fit with the wall of the notch, and the lock tongue is positioned outside the notch when in unlocking position.
As a further refinement, the slot has a front slot wall which, with the locking tongue, stops in a forward direction to cooperate with the spring to hold the blocking member in the blocking position.
As a further improvement, the stop sleeve comprises a main sleeve body and an outer flange arranged at the rear end of the main sleeve body, the cutting groove penetrates through the outer flange from front to back and extends to the main sleeve body, the groove wall of the cutting groove, which is positioned on the outer flange, is matched with the lock tongue stop, and the groove wall of the front side of the cutting groove, which is positioned on the main sleeve body, is stopped with the lock tongue in the forward direction.
As a further improvement, a guide support frame is fixedly arranged on the side wall of the cabinet body, the locking piece is in guide fit with the guide support frame, and the elastic piece is a tension spring connected to the guide support frame and the locking piece.
The beneficial effects are that: the invention relates to a novel locking device for a switch operation shaft when a switch cabinet performs a dynamic thermal stability test. Through in the direction movable stroke of latch piece on the operating shaft, both be provided with the structure cooperation that keeps off and realize the latch position that keeps off the structure and to the operation shaft that keeps off again be provided with the unblock position that keeps away the structure that keeps off and remove the operation shaft that keeps off to the transition that keeps off the position to the unblock position can be realized to the latch through pushing the latch piece, on the basis of guaranteeing that the earthing switch is not switched off because of electric power, can only make the latch piece be pushed to leaving the latch position to the unblock position through operating the brake release operating handle after the dynamic thermal stability test again and can remove the combined floodgate locking of earthing switch, convenient operation is swift, and simple structure, the flexible operation can guarantee going on smoothly of dynamic thermal stability test and greatly improved test efficiency simultaneously.
The technical scheme of the switch cabinet provided by the invention is as follows: the switch operation shaft locking device comprises a cabinet body, an operation shaft of a grounding switch rotatably mounted in the cabinet body, the operation shaft extends front and back, the front end of the operation shaft extends to the front side wall of the cabinet body, an operation hole is formed in the front side wall of the cabinet body at the front end position corresponding to the operation shaft, the switch operation shaft locking device further comprises a blocking structure arranged on the operation shaft and a locking piece arranged on the side of the operation shaft, the locking piece is movably mounted in the cabinet body along the axial direction of the operation shaft, the locking piece is provided with a locking position matched with the blocking structure in a guiding movable stroke to realize the locking of the operation shaft and an unlocking position for avoiding the blocking structure to release the locking of the operation shaft, the unlocking position is located on one side of the locking position far away from the operation hole, the locking piece is provided with an elastic piece for providing acting force towards the locking position, and the locking piece is provided with a pushed end corresponding to the operation hole to be pushed backwards to the unlocking position by the opening operation handle when the opening operation handle is inserted on the operation shaft from the operation hole.
As a further improvement, the stop structure comprises a stop sleeve fixedly arranged on the operation shaft, a notch extending forwards axially from the rear end face of the stop sleeve is arranged on the outer peripheral surface of the stop sleeve, a lock tongue corresponding to the notch in the axial direction is arranged on the lock piece, the lock tongue stretches into the notch when in locking position and stops rotating the operation shaft through the stop fit with the wall of the notch, and the lock tongue is positioned outside the notch when in unlocking position.
As a further refinement, the slot has a front slot wall which, with the locking tongue, stops in a forward direction to cooperate with the spring to hold the blocking member in the blocking position.
As a further improvement, the stop sleeve comprises a main sleeve body and an outer flange arranged at the rear end of the main sleeve body, the cutting groove penetrates through the outer flange from front to back and extends to the main sleeve body, the groove wall of the cutting groove, which is positioned on the outer flange, is matched with the lock tongue stop, and the groove wall of the front side of the cutting groove, which is positioned on the main sleeve body, is stopped with the lock tongue in the forward direction.
As a further improvement, a guide support frame is fixedly arranged on the side wall of the cabinet body, the locking piece is in guide fit with the guide support frame, and the elastic piece is a tension spring connected to the guide support frame and the locking piece.
The beneficial effects are that: the invention relates to a switch cabinet for improving a switch cabinet in the prior art, wherein a switch operation shaft locking device is arranged in the switch cabinet, a locking position which is matched with a blocking structure to realize the rotation stopping of an operation shaft and an unlocking position which is used for avoiding the blocking structure to release the rotation stopping of the operation shaft are arranged in the guiding movable stroke of a locking piece on the operation shaft, the locking position can be changed to the unlocking position by pushing the locking piece, the switch is ensured not to be separated by electric force, and the closing locking of a grounding switch can be released only by operating a brake separating operation handle after the end of moving heat, so that the switch cabinet is convenient and quick to operate, has a simple structure and flexible operation, can ensure the smooth running of a moving heat stability test, and simultaneously greatly improves the test efficiency.
Drawings
FIG. 1 is a schematic perspective view of one embodiment of a switch operating shaft locking device provided by the present invention;
FIG. 2 is a side view of a grounding switch closing state of one embodiment of a switch operating shaft lockout device provided by the present invention;
FIG. 3 is a cross-sectional view of the ground switch of FIG. 2 in the direction E;
FIG. 4 is a perspective view of one embodiment of a switch operating shaft blocking sleeve provided by the present invention;
FIG. 5 is a schematic view of a grounding switch contact of an embodiment of a switchgear provided by the present invention;
In the figure: 1. an operation shaft; 2. a stop sleeve; 21. grooving; 22. front side groove wall; 23. a main sleeve body; 24. an outer flange; 3. a latch; 4. a first guide support frame; 5. an operation hole; 6. a grounding switch main shaft; 7. a brake-separating operation handle; 8. a front sidewall; 9. a tension spring; 10. a multi-position connector; 11. a sidewall; 12. a moving contact; 13. a stationary contact; 14. and the second guide supporting frame.
Detailed Description
The features and capabilities of the present invention are described in further detail below in connection with the examples.
The dynamic thermal stability test is an important performance test for checking the capacity of an electrical product to bear the electrodynamic force and the thermal effect generated by short-circuit current, and the dynamic thermal stability test has a critical effect when the switch cabinet is designed and manufactured, so that once the equipment has a short-circuit fault, all devices are not burnt out, and secondly, the switch cabinet is likely to not pass through the type test and the factory test which are required by the permission of the switch cabinet to be used if the dynamic thermal stability test is not performed in advance.
In the dynamic thermal stability test, the dynamic and static contacts are often separated due to huge electromotive force, an arcing phenomenon is generated, the dynamic and static contact positions are burnt, the test fails, the clamping force of the dynamic and static contacts is increased by an operator to ensure smooth performance of the dynamic thermal stability test, but the dynamic and static contacts are required to be separated after the dynamic thermal stability test is finished, and the operation is unchanged. Therefore, it is desirable to provide a device that facilitates the smooth performance of dynamic thermal stability tests.
The overall design concept of the switch cabinet provided by the invention is as follows:
as shown in fig. 1 to 3, the switch cabinet of the present invention includes a switch operating shaft locking device including a cabinet body and an operating shaft 1 of a grounding switch installed in the cabinet body, the operating shaft 1 is rotatably installed in the cabinet body, and extends back and forth in the cabinet body and front ends thereof extend to front side walls 8 of the cabinet body, while the front side walls 8 of the cabinet body are provided with operating holes 5 at positions corresponding to the front ends of the operating shaft 1, and the rear ends of the operating shaft 1 are connected with a grounding switch main shaft 6 through a link mechanism.
The switch operating shaft locking device further comprises a blocking structure arranged on the operating shaft 1 and a locking piece 3 arranged beside the operating shaft 1, the locking piece 3 is movably arranged in the cabinet along the axial direction of the operating shaft 1, a locking position matched with the blocking structure to stop the operating shaft 1 is arranged in the guiding and moving stroke of the locking piece 3, the switch operating shaft locking device further comprises an unlocking position for avoiding the blocking structure to release the locking of the operating shaft 1, the unlocking position is positioned on one side of the locking position far away from the operating hole 5, the locking piece 3 is provided with an elastic piece for providing a force for the locking piece towards the locking position, and the locking piece 3 is provided with a pushed end corresponding to the operating hole 5 and pushed to the unlocking position by the opening operating handle 7 backwards when the opening operating handle 7 is inserted on the operating shaft 1 from the operating hole 5.
When the device is used, in the process of rotating the operation shaft 1, the blocking structure on the operation shaft 1 rotates along with the operation shaft, meanwhile, the blocking piece 3 is pulled under the acting force of the elastic piece, so that the blocking piece 3 moves towards the blocking position in a guiding way at the side of the operation shaft 1, when the blocking structure rotates along with the operation shaft 1, the blocking piece 3 moves to the blocking position, the blocking structure and the blocking piece 3 are matched to prevent the rotation of the operation shaft 1, so that the main shaft 6 of the grounding switch cannot rotate, and when a dynamic thermal stability test is carried out, under the impact of huge electric force generated by short-circuit current, the moving contact 12 and the fixed contact 13 of the grounding switch can meet the closing requirement of the grounding switch, and the smooth running of the dynamic thermal stability test is ensured as shown in fig. 5.
When the thermal stability test is finished and the grounding switch is opened, the opening operation handle 7 is inserted and sleeved on the operation shaft 1 from the operation hole 5 on the front side wall 8 of the cabinet body, the opening operation handle 7 props against the pushed end of the locking piece 3, and then the opening operation handle 7 is pushed along the axial extending direction of the operation shaft 1, so that the locking piece 3 moves towards the unlocking position far away from one side of the operation hole 5 under the pushing of the opening operation handle 7, when the locking piece 3 moves to the unlocking position, the locking piece 3 is not matched with the blocking structure, the blocking structure does not prevent the operation shaft 1 from rotating any more, and therefore, the opening operation handle 7 is rotated to drive the grounding switch main shaft 6 to rotate, so that the moving contact 12 and the static contact 13 normally open the brake. .
According to the invention, the moving contact 12 of the grounding switch can be kept at the closing position under the impact of electric power, so that the normal running of a dynamic thermal stability test is ensured, meanwhile, the closing locking of the grounding switch can be released only by operating the opening operation handle 7 to lead the locking piece 3 to move to the unlocking position after the dynamic thermal stability test is finished, the operation is convenient and quick, the structure is simple, the operation is flexible, the installation in a switch cabinet is easy, and the limited space of the switch cabinet is not occupied excessively.
Based on the above description of the integrity of the switchgear cabinet of the present invention, a more specific embodiment is provided below on the basis of the description of the integrity:
As shown in fig. 4, for facilitating the manufacturing process and being more conveniently mounted on the operation shaft 1, the stopper structure includes a stopper sleeve 2 fixedly provided on the operation shaft 1, the outer circumferential surface of the stopper sleeve 2 is provided with a slit 21 extending axially forward from the rear end surface of the stopper sleeve 2, the slit 21 is relatively simple to process, and the slit 21 can ensure a good positional accuracy, thereby ensuring the fitting effect with the locking piece 3. Correspondingly, the locking piece 3 is provided with a locking tongue corresponding to the cutting groove 21 in the axial direction, the locking tongue stretches into the cutting groove 21 in the locking position and is in stopping rotation of the operation shaft 1 through stopping fit with the wall of the cutting groove 21, and the locking tongue is positioned outside the cutting groove 21 in the unlocking position. The stopper sleeve 2 may be a cylindrical tube or other cylindrical body having an inner hole for being fitted over the operation shaft 1. Of course, the blocking structure may be an L-shaped member fixed in the axial direction of the operation shaft 1, wherein a longer side of the L-shaped member extends along the axial direction of the operation shaft 1, the locking member 3 is pulled against a shorter side of the L-shaped member under the force of the elastic member, and the shorter side of the L-shaped member blocks the advancing direction of the locking member 3 in real time so that the locking member 3 is stationary in the locking position, and the longer side of the L-shaped member realizes the rotation blocking of the operation shaft 1.
More specifically, as shown in fig. 4, the slot 21 has a front slot wall 22, the front slot wall 22 is stopped with the latch tongue in the forward direction to hold the latch 3 in the latched position in cooperation with the elastic member, that is, in the course of the guiding movement of the latch 3, when the latch 3 is mated with the stopper structure, the latch tongue is hooked on the front slot wall 22 in the stopper structure while the elastic member pulls the latch 3 so that the latch tongue is more tightly abutted against the front slot wall 22, the latch 3 is held in the latched position, and the slot wall 21 is stopped by the latch tongue so that the stopper sleeve 22 cannot be rotated, so that the operation shaft 1 is stopped from rotating, thereby realizing the stopping of the ground switch spindle 6. In another embodiment, the stop structure may be a slot 21 with a front slot wall 22 machined directly into the shaft body of the operating shaft 1.
On the basis of the above, in order to more conveniently process the front side groove wall 22 for stopping the lock tongue in the forward direction and the cutting groove 21 for stopping the rotation of the operation shaft 1 in cooperation with the lock tongue stop, as shown in fig. 4, the stop sleeve 22 is specifically provided to include a main sleeve body 23 and an outer flange 24 provided at the rear end of the main sleeve body 23, the cutting groove 21 penetrates the outer flange 24 from front to back and extends to the main sleeve body 23, the groove wall of the cutting groove 21 on the outer flange 24 cooperates with the lock tongue stop, and the front side groove wall 22 of the cutting groove 21 on the main sleeve body 23 is stopped with the lock tongue in the forward direction. Compared with the main sleeve body 23, the cross section area of the outer flange 24 is larger, the contact area with the locking piece 3 is larger when the cutting groove 21 processed on the outer flange stops the locking piece 3, and on the basis of better stopping effect, the overlarge volume of the stopping sleeve 2 is avoided, so that more space in a switch cabinet is occupied, and the weight is larger, so that the load of the operating shaft 1 is increased.
Based on the above description of the switch gear of the invention as a whole, or on the above described embodiments of the invention, a more specific embodiment is provided below:
in order to facilitate the guiding movement of the locking piece 3 along the axial direction of the operation shaft 1, as shown in fig. 1 and 2, a first guiding support frame 4 is fixedly installed on the side wall 11 of the cabinet body, the operation shaft 1 passes through the first guiding support frame 4, the locking piece 3 is in guiding fit with the first guiding support frame 4, and the first guiding support frame 4 facilitates the guiding movement of the locking piece 3. Specifically, after the locking piece 3 passes through the first guide supporting frame 4, an elastic piece is connected to the end of the locking piece 3, the other end of the elastic piece is connected to the first guide supporting frame 4, and the elastic piece applies a force to the locking piece 3 to enable the locking piece 3 to face the first guide supporting frame 4.
Preferably, on the basis of the first guide supporting frames 4, the second guide supporting frames 14 are further arranged at intervals, as shown in fig. 1 and 2, the first guide supporting frames 4 are arranged at positions close to the tail ends of the guide moving paths of the locking pieces 3, the second guide supporting frames 14 are fixedly arranged at the front side wall 8 of the cabinet body, that is, in the process of guiding movement of the locking pieces 3, the guide supporting frames are arranged at the two ends of the moving paths of the locking pieces so as to facilitate the guide movement of the locking pieces 3.
Furthermore, in order to avoid the phenomenon that the locking element 3 shifts during moving, a limiting structure is arranged on the guiding support frame, so that the locking element 3 passes through the limiting structure to conduct guiding movement when the locking element 3 is arranged, the limiting structure can be a notch directly machined on the guiding support frame, so that the locking element 3 passes through the notch to conduct guiding movement, for example, a second guiding support frame 14 with a notch is arranged. Of course, the limiting structure can also be a U-shaped groove or a hole-shaped structure, and the locking piece 3 can pass through the limiting structure so as to prevent the deviation in the guiding movement.
More specifically, in order to ensure the rotation stopping effect of the locking piece 3 and the stopping structure on the operation shaft 1, the elastic piece is a tension spring 9 connected to the guide support frame and the locking piece 3, and the tension spring 9 has long service life and stable state, and has reliable tension force capable of pulling the locking piece 3 towards the locking position, so that the rotation stopping effect on the operation shaft 1 is ensured. In another embodiment, the elastic member may also be a compression spring that applies force to the locking member 3 to make it face the locking position, specifically, a compression spring is disposed between the second guiding support frame 14 and the front side wall 8 on the operating shaft 1, one end of the compression spring is connected to the second guiding support frame 14, and the other end is connected to the locking member 3, so that the locking member 3 can move to the locking position under the action of the compression spring.
Of course, in another embodiment, the locking member 3 may be provided with a multi-position connecting member 10, and a plurality of connecting holes for connecting the tension springs 9 are arranged on the multi-position connecting member 10 in parallel along the length extending direction of the locking member 3, and when the tension springs 9 are connected to different connecting holes, the tension force of the tension springs 9 on the locking member 3 will also change correspondingly.
The embodiment of the locking device of the switch operation shaft has the specific structure the same as the structure of the movable contact assembly in the embodiment of the switch cabinet described above, and is not repeated herein.
The specific features described in the above embodiments may be combined in any suitable manner without contradiction. The various possible combinations of the invention are not described in detail in order to avoid unnecessary repetition.
Moreover, any combination of the various embodiments of the invention can be made without departing from the spirit of the invention, which should also be considered as disclosed herein.
The above description is only a preferred embodiment of the present invention, and the patent protection scope of the present invention is defined by the claims, and all equivalent structural changes made by the specification and the drawings of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a switch operating shaft locking device, includes the cabinet body and rotates the operating shaft of installing at the internal earthing switch of cabinet, the operating shaft back-and-forth extension, and front end extension to cabinet body preceding lateral wall department, its characterized in that: the front side wall of the cabinet body is provided with an operation hole at the front end position corresponding to the operation shaft, the switch operation shaft locking device further comprises a blocking structure arranged on the operation shaft and a locking piece arranged beside the operation shaft, the locking piece is movably mounted in the cabinet body along the axial direction of the operation shaft in a guiding and moving way, a locking position matched with the blocking structure to realize the rotation stopping of the operation shaft and an unlocking position avoiding the blocking structure to release the rotation stopping of the operation shaft are arranged in the guiding and moving way, the unlocking position is positioned at one side of the locking position far away from the operation hole, which is provided with an acting force applied to the locking piece towards the locking position, and the locking piece is provided with an elastic piece corresponding to the operation hole so as to be pushed to the pushed end of the unlocking position by the opening operation handle backwards when the opening operation handle is inserted and sleeved on the operation shaft from the operation hole.
2. The switch-operating shaft locking device of claim 1, wherein: the stop structure comprises a stop sleeve fixedly arranged on the operation shaft, a cutting groove extending forwards axially from the rear end face of the stop sleeve is formed in the peripheral face of the stop sleeve, a lock tongue corresponding to the cutting groove in the axial direction is arranged on the lock piece, the lock tongue stretches into the cutting groove during locking, and the rotation stop of the operation shaft is realized through the stop fit with the wall of the cutting groove, and the lock tongue is positioned outside the cutting groove during unlocking.
3. The switch-operating shaft locking device of claim 2, wherein: the slot has a front slot wall that blocks with the locking bolt in a forward direction to cooperate with the spring to retain the latch in the latched position.
4. A switch-operating shaft blocking device according to claim 3, characterized in that: the stop sleeve comprises a main sleeve body and an outer flange arranged at the rear end of the main sleeve body, the groove penetrates through the outer flange from front to back and extends to the main sleeve body, the groove wall of the groove, which is positioned on the outer flange, is matched with the lock tongue stop, and the groove wall of the groove, which is positioned on the main sleeve body, is blocked with the lock tongue in the forward direction.
5. The switch-operating shaft locking device according to any one of claims 1 to 4, wherein: the side wall of the cabinet body is fixedly provided with a guide support frame, the locking piece is matched with the guide support frame in a guide way, and the elastic piece is a tension spring connected to the guide support frame and the locking piece.
6. The utility model provides a cubical switchboard, includes switch operating shaft locking device, and switch operating shaft locking device includes the cabinet body and rotates the operating shaft of installing at the internal earthing switch of cabinet, the operating shaft back-and-forth extension, and front end extension to cabinet body preceding lateral wall department, its characterized in that: the front side wall of the cabinet body is provided with an operation hole at the front end position corresponding to the operation shaft, the switch operation shaft locking device further comprises a blocking structure arranged on the operation shaft and a locking piece arranged beside the operation shaft, the locking piece is movably mounted in the cabinet body along the axial direction of the operation shaft in a guiding and moving way, a locking position matched with the blocking structure to realize the rotation stopping of the operation shaft and an unlocking position avoiding the blocking structure to release the rotation stopping of the operation shaft are arranged in the guiding and moving way, the unlocking position is positioned at one side of the locking position far away from the operation hole, which is provided with an acting force applied to the locking piece towards the locking position, and the locking piece is provided with an elastic piece corresponding to the operation hole so as to be pushed to the pushed end of the unlocking position by the opening operation handle backwards when the opening operation handle is inserted and sleeved on the operation shaft from the operation hole.
7. The switchgear as claimed in claim 6, wherein: the stop structure comprises a stop sleeve fixedly arranged on the operation shaft, a cutting groove extending forwards axially from the rear end face of the stop sleeve is formed in the peripheral face of the stop sleeve, a lock tongue corresponding to the cutting groove in the axial direction is arranged on the lock piece, the lock tongue stretches into the cutting groove during locking, and the rotation stop of the operation shaft is realized through the stop fit with the wall of the cutting groove, and the lock tongue is positioned outside the cutting groove during unlocking.
8. The switchgear as claimed in claim 7, wherein: the slot has a front slot wall that blocks with the locking bolt in a forward direction to cooperate with the spring to retain the latch in the latched position.
9. The switchgear as claimed in claim 8, wherein: the stop sleeve comprises a main sleeve body and an outer flange arranged at the rear end of the main sleeve body, the groove penetrates through the outer flange from front to back and extends to the main sleeve body, the groove wall of the groove, which is positioned on the outer flange, is matched with the lock tongue stop, and the groove wall of the groove, which is positioned on the main sleeve body, is blocked with the lock tongue in the forward direction.
10. A switchgear as claimed in any of claims 6 to 9, wherein: the side wall of the cabinet body is fixedly provided with a guide support frame, the locking piece is matched with the guide support frame in a guide way, and the elastic piece is a tension spring connected to the guide support frame and the locking piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410165532.4A CN118016457A (en) | 2024-02-05 | 2024-02-05 | Switch operation shaft locking device and switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410165532.4A CN118016457A (en) | 2024-02-05 | 2024-02-05 | Switch operation shaft locking device and switch cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118016457A true CN118016457A (en) | 2024-05-10 |
Family
ID=90944406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410165532.4A Pending CN118016457A (en) | 2024-02-05 | 2024-02-05 | Switch operation shaft locking device and switch cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118016457A (en) |
-
2024
- 2024-02-05 CN CN202410165532.4A patent/CN118016457A/en active Pending
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