CN211908173U - Drawer locking mechanism of low-voltage switch cabinet - Google Patents
Drawer locking mechanism of low-voltage switch cabinet Download PDFInfo
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- CN211908173U CN211908173U CN202020711219.3U CN202020711219U CN211908173U CN 211908173 U CN211908173 U CN 211908173U CN 202020711219 U CN202020711219 U CN 202020711219U CN 211908173 U CN211908173 U CN 211908173U
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Abstract
A drawer locking mechanism of a low-voltage switch cabinet comprises a loop compartment, wherein the bottom of the loop compartment is a fixed compartment laminate, a drawer is arranged in the loop compartment, a circuit breaker is arranged in the drawer, the drawer is provided with a drawer bottom plate and a drawer front panel, and a drawer pushing mechanism for driving the drawer to move longitudinally is arranged on the drawer bottom plate; the front panel of the drawer is provided with an operation hole, and the operation handle is movably inserted into or separated from the drawer pushing mechanism through the operation hole; the drawer is further provided with a locking assembly, the locking assembly comprises a support, a rotating shaft extending longitudinally, a long-strip-shaped blocking piece and a long-strip-shaped locking tongue piece, the support is fixedly connected with the drawer bottom plate, a hollow hole for the locking tongue piece to penetrate through is formed in the drawer bottom plate, three locking tongue holes for the locking tongue piece to be embedded into are formed in the compartment laminated plate, and the longitudinal position of the blocking piece is located between the drawer advancing mechanism and the drawer front panel. The utility model discloses can satisfy drawer position locking and drawer advancing mechanism locking requirement simultaneously, guarantee low-voltage switchgear operation safe and reliable.
Description
Technical Field
The utility model belongs to the technical field of power switch cabinet, concretely relates to drawer blocking mechanism of low-voltage switchgear.
Background
The functional circuit on the low-voltage switch cabinet is generally designed into an extractable unit module, which is called as a drawer in a row, the drawer can be longitudinally movably arranged in a circuit compartment, a compartment laminate is fixedly arranged at the bottom of the circuit compartment, the drawer is provided with a drawer bottom plate and a drawer front panel, a drawer pushing mechanism, a circuit breaker and other components for driving the drawer to longitudinally move are arranged on the drawer bottom plate, an operating handle is matched with the drawer pushing mechanism, and an operator can drive the drawer pushing mechanism to push the drawer into or withdraw from the low-voltage switch cabinet by rotating the operating handle. During the longitudinal movement of the drawer, the drawer will pass through three important functional positions, referred to in the industry as the disengaged position, the testing position and the working position, respectively.
When the drawer is located at the separation position, an electric circuit in the drawer is in a disconnection state, the drawer is not allowed to be pushed to a test position and a connection position, the drawer needs to be locked at the moment, the state is maintained, an operator is not allowed to push or withdraw the drawer by using an operating handle, and a downstream load is prevented from being electrified suddenly, so that the safety of the downstream load is ensured;
when the drawer is positioned at a test position, an electric loop in the drawer is in a power-on state, and a tester is performing electric function test and debugging, at the moment, the drawer needs to be locked to maintain the state, and the operator is not allowed to push the drawer in or out by using the operating handle, so that the safety of downstream equipment and the personal safety of the tester are ensured;
when the drawer is located at the connection position, the electric circuit in the drawer is in an electrified state, and the downstream load is electrified to work. At this time, the drawer needs to be locked, maintain the power-on state, and prevent the power-off of the downstream load so as to ensure the safety of the downstream load. In addition, if the drawer is forcibly pulled out at this time, the generated arc may cause the circuit breaker to burn out, and even an electrical explosion may occur.
It can be seen that the position control of the drawers of each particular low-voltage switchgear cabinet involves at least a multiplicity of personnel, such as operating personnel, test personnel, downstream equipment management, etc., and that the operation of the drawer advancing mechanism is only permitted if all the personnel in each of the individual aspects permit a change in the functional position of the drawer, which means that the personnel in each of the individual aspects preferably each have a negative control over the position change.
However, the drawer locking mechanism of the conventional low-voltage switch cabinet has the following problems to be improved: firstly, the function is single, or only the function of limiting and locking the drawer is provided, or only the function of forbidding the operating handle to operate the drawer pushing mechanism in a specific state is provided, and the two functions are not provided at the same time; secondly, only one padlock can be added to the drawer, and the padlock can be controlled by only one management party, so that the operation control right of a ticket denial system can not be provided for all personnel in multiple aspects.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the above problems and providing a low-voltage switch cabinet drawer blocking mechanism, it can satisfy drawer position locking and drawer advancing mechanism locking requirement simultaneously, guarantees low-voltage switch cabinet operation safe and reliable.
In order to achieve the purpose, the drawer locking mechanism of the low-voltage switch cabinet comprises a loop compartment, the bottom of the loop compartment is a fixed compartment laminate, a drawer is arranged in the loop compartment, a circuit breaker is arranged in the drawer, the drawer is provided with a drawer bottom plate and a drawer front panel, and a drawer pushing mechanism for driving the drawer to move longitudinally is arranged on the drawer bottom plate; the drawer pushing mechanism is matched with an operating handle, an operating hole is formed in the front panel of the drawer, and the operating handle is movably inserted into or separated from the drawer pushing mechanism through the operating hole; the longitudinal moving track of the drawer comprises a separation position, a test position and a connection position;
the drawer is characterized in that the drawer is also provided with a locking component, the locking component comprises a bracket, a rotating shaft extending longitudinally, a strip-shaped blocking piece and a strip-shaped locking tongue piece, the bracket is fixedly connected with the drawer bottom plate, and the bracket is positioned beside the drawer pushing mechanism; the rotating shaft can be rotatably arranged in the bracket, and the blocking piece, the locking tongue piece and the rotating shaft are fixed into a whole and rotate along with the rotating shaft; the drawer bottom plate is provided with a hollow hole for the lock tongue piece to pass through, the compartment laminate is provided with three lock tongue holes for the lock tongue piece to be embedded in, the three lock tongue holes are arranged from front to back in the same transverse position, and the three lock tongue holes are respectively a first lock tongue hole, a second lock tongue hole and a third lock tongue hole; when the drawer is positioned at the separation position, the longitudinal position of the lock tongue piece is aligned with the first lock tongue hole; when the drawer is positioned at the test position, the longitudinal position of the lock tongue piece is aligned with the second lock tongue hole; when the drawer is positioned at the connecting position, the longitudinal position of the lock tongue piece is aligned with the third lock tongue hole; the longitudinal position of the baffle plate is positioned between the drawer pushing mechanism and the drawer front panel;
when the length direction of the locking piece rotates to the vertical direction and the movable end of the locking piece is positioned below the rotating shaft, the locking piece penetrates through the hollow hole of the drawer bottom plate and the movable end of the locking piece is embedded into one locking piece hole of the compartment layer plate, the length direction of the blocking piece is the horizontal direction, and the movable end of the blocking piece is positioned right behind the drawer front panel operation hole;
when the length direction of the lock tongue piece rotates to the horizontal direction, the lock tongue piece is separated from the hollow hole of the drawer bottom plate and the lock tongue hole of the compartment layer plate, the length direction of the blocking piece is the vertical direction, and the blocking piece is staggered with the position of the operation hole of the drawer front panel.
An outer ring sleeve is fixedly arranged on the front panel of the drawer and is exposed out of the front panel of the drawer; the front section of the rotating shaft can be rotatably positioned in the outer ring sleeve; the front section of the rotating shaft is provided with a plurality of inner lock holes for the lock handles of the padlock to pass through, the outer ring sleeve is provided with a plurality of outer lock holes for the lock handles of the padlock to pass through, and the number of the inner lock holes and the number of the outer lock holes are correspondingly the same; when the length direction of the lock tongue piece rotates to the vertical direction and the movable end of the lock tongue piece is positioned below the rotating shaft, each inner lock hole rotates to the position respectively aligned to the corresponding outer lock hole.
The number of the inner lock holes is three, and the number of the outer lock holes is three.
The utility model has the advantages of it is following and effect:
the drawer locking mechanism has a drawer position locking function, a drawer can be buckled into a compartment laminate through a lock tongue piece no matter the drawer is located at any functional position of three functional positions of separation, test and connection, the longitudinal position of the drawer is locked, and meanwhile, a blocking piece blocks an operation hole of a front panel of the drawer, so that an operation handle is ensured not to extend into the drawer pushing mechanism, namely the longitudinal movement of the drawer is ensured not to be operated, therefore, the functional position of the drawer cannot be changed through forcibly deforming the lock tongue piece, and the locking of the drawer pushing mechanism is realized;
secondly, further, the utility model discloses every interior lockhole and corresponding outer lockhole both form the through-hole and can hang the padlock, therefore under the shutting state of above-mentioned first point, still can hang a plurality of padlocks simultaneously and lock, as long as there is any one of them padlock not untie, just can't unlock, namely can't rotate the pivot and change above-mentioned shutting state, therefore can realize that personnel in many aspects all own the operation control right of a vote system respectively;
and the locking mechanism mainly comprises mechanical parts, and is simple in structure and reliable in action.
Drawings
Fig. 1 is a schematic perspective view of the unlocking state of the present invention.
Fig. 2 is a schematic perspective view of the structure of fig. 1 from a second angle.
Fig. 3 is a schematic perspective view of the structure of fig. 1 from a third angle.
Fig. 4 is a partially enlarged schematic view of a in fig. 3.
Fig. 5 is an assembly view of the structure of fig. 1 with the drawer front panel and compartment deck removed.
Fig. 6 is a schematic front view of the structure shown in fig. 5.
Fig. 7 is an enlarged view of part B of fig. 5.
FIG. 8 is a schematic view of the latch assembly in an unlatched condition.
Fig. 9 is a front view of the spindle of fig. 8.
Fig. 10 is a perspective view of the spindle of fig. 8.
Figure 11 is a perspective view of the outer cuff of figure 8.
FIG. 12 is a schematic view of the latch assembly in the latched condition.
Fig. 13 is a schematic view showing a state of change after the structure shown in fig. 6 is transformed into a locking state and the drawer is in a separated position.
Fig. 14 is a perspective view of the structure shown in fig. 13.
FIG. 15 is a perspective view of the locking assembly of the construction of FIG. 14 in mated relationship with a compartment layer panel.
Fig. 16 is an enlarged view of part C of fig. 15.
FIG. 17 is a perspective view of the mating relationship of the latch assembly to the compartment layer panel with the latch assembly in the latched condition and the drawer in the testing position.
FIG. 18 is a perspective view of the mating relationship of the latch assembly and compartment layer panels with the latch assembly in the latched condition and the drawer in the connected position.
Detailed Description
The drawer locking mechanism of the low-voltage switch cabinet shown in fig. 1, 2, 3, 4, 5, 6 and 7 comprises a loop compartment, the bottom of the loop compartment is a fixed compartment layer plate 2, a drawer 1 is arranged in the loop compartment, a circuit breaker is arranged in the drawer 1, the drawer 1 is provided with a drawer bottom plate 12 and a drawer front panel 11, and a drawer pushing mechanism 13 for driving the drawer to move longitudinally is arranged on the drawer bottom plate 12; the longitudinal moving track of the drawer 1 comprises a separation position, a test position and a connection position; the supporting operating handle that is equipped with of drawer advancing mechanism 13, operating hole 10 has been seted up to drawer front panel 11, the front end of drawer bottom plate 12 is equipped with erect hem 6, hem 6 is located drawer front panel 11 at the back, and hem 6 and drawer front panel 11 both closely laminate together, hem 6 is located the back of drawer front panel 11, hem 6 is equipped with round hole 60, the round hole 60 of hem 6 overlaps with both positions of operating hole 10 of drawer front panel 11, operating handle is by operating hole 10 and round hole 60 activity insert or break away from drawer advancing mechanism 13, when needing the operation promptly, operating handle inserts drawer advancing mechanism 13, and when not needing the operation, operating handle can extract drawer advancing mechanism 13.
As shown in fig. 5, 6, 7, 8, 12 and 13, the drawer 1 is further provided with a locking assembly, the locking assembly includes a bracket 31, a longitudinally extending rotating shaft 3, an elongated catch 32, and an elongated locking tongue piece 33, the bracket 31 is fixedly connected with the drawer bottom 12, the bracket 31 is located beside the drawer pushing mechanism 13, the rotating shaft 3 is rotatably installed in the bracket 31, and the catch 32 and the locking tongue piece 33 are fixed with the rotating shaft 3 as a whole and rotate along with the rotating shaft 3; the drawer bottom 12 is opened with a hollow hole 120 for the tongue piece 33 to pass through. As shown in fig. 3, 4, 13 and 15, the compartment layer plate 2 is provided with three latch holes for the insertion of the latch pieces, wherein the three latch holes are a first latch hole 41, a second latch hole 42 and a third latch hole 43; the transverse positions of the three lock tongue holes are the same, and the longitudinal positions are arranged from front to back; when the drawer 1 is in the separated position, the longitudinal position of the striking plate 33 is aligned with the first striking plate hole 41, as shown in fig. 14, 15 and 16; when the drawer 1 is in the test position, the longitudinal position of the strike plate 33 is aligned with the second strike plate aperture 42, as shown in figure 17; when the drawer 1 is in the connected position, the longitudinal position of the strike plate 33 is aligned with the third strike plate aperture 43, as shown in figure 18; the longitudinal position of the flap 32 is between the drawer push 13 and the drawer front panel 11 as shown in fig. 2 and 14 (in fig. 14, the longitudinal position of the flap 32 is between the drawer push 13 and the fold 6, the longitudinal position of the flap 32 is behind the fold 6 and in front of the drawer push 13, and the drawer front panel 11 is in front of the flap 32, so the longitudinal position of the flap 32 is between the drawer push 13 and the drawer front panel 11).
When the length direction of the locking tongue piece 33 rotates to the vertical direction and the movable end of the locking tongue piece 33 is positioned below the rotating shaft 3, the locking tongue piece 33 penetrates through the hollow hole 120 of the drawer bottom plate and the movable end of the locking tongue piece 33 is embedded into one locking tongue hole of the compartment layer plate (specifically, when the drawer 1 is positioned at the separation position, the movable end of the locking tongue piece 33 is embedded into the first locking tongue hole 41 of the compartment layer plate, as shown in figures 13, 14, 15 and 16; when the drawer 1 is positioned at the test position, the movable end of the locking tongue piece 33 is embedded into the second locking tongue hole 42 of the compartment layer plate, as shown in figure 17; when the drawer 1 is positioned at the connection position, the movable end of the locking tongue piece 33 is embedded into the third locking tongue hole 43 of the compartment layer plate, as shown in figure 18), and the length direction of the baffle 32 is the horizontal direction and the movable end of the baffle 32 is positioned right behind the operation hole 10 of the drawer front plate, as shown in figures 12, 13, 14, 15, fig. 17 and 18.
When the long direction of the locking tongue piece 33 rotates to the horizontal direction, the locking tongue piece 33 is separated from the hollow hole 120 of the drawer bottom plate and the locking tongue hole of the compartment layer plate 2, while the long direction of the baffle 32 is vertical direction and the position of the baffle 32 is staggered with the position of the operation hole 10 of the drawer front panel, as shown in fig. 5, 6 and 7.
A plurality of padlocks are also matched and arranged; as shown in fig. 8, 9, 10 and 11, the outer ring sleeve 5 is fixedly mounted on the drawer front panel 11, and the outer ring sleeve 5 is exposed outside the drawer front panel 11; the front section of the rotating shaft 3 can be rotatably positioned in the outer ring sleeve 5; the front section of the rotating shaft 3 is provided with three inner lock holes 30 for the lock handles of the padlock to pass through, and the outer ring sleeve 5 is provided with three outer lock holes 50 for the lock handles of the padlock to pass through; when the longitudinal direction of the striking plate 33 is rotated to the vertical direction and the free end of the striking plate is located below the rotary shaft 3, each of the inner lock holes 30 is rotated to an orientation aligned with the corresponding outer lock hole 50.
The locking principle of the above embodiment is as follows:
when the drawer 1 is longitudinally moved to any one of the separated position, the test position and the connection position, the rotating shaft 3 is clockwise twisted, so that the length direction of the strike plate 33 is rotated to the vertical direction and the movable end of the strike plate 33 is positioned below the rotating shaft 3, then the strike plate 33 passes through the hollowed hole 120 of the drawer bottom plate and the movable end of the strike plate is embedded into a corresponding strike plate hole of the compartment layer plate (specifically, when the drawer 1 is positioned at the separated position, the longitudinal position of the strike plate is aligned with the first strike plate hole 41, the movable end of the strike plate 33 is embedded into the first strike plate hole 41 of the compartment layer plate, as shown in fig. 13, 14, 15 and 16; when the drawer 1 is positioned at the test position, the longitudinal position of the strike plate is aligned with the second strike plate hole 42, the movable end of the strike plate 33 is embedded into the second strike plate hole 42 of the compartment layer plate, as shown in fig. 17; when the drawer 1 is positioned at the connection position, the longitudinal position of the lock tongue piece 33 is aligned with the third lock tongue hole 43, the movable end of the lock tongue piece 33 is embedded into the third lock tongue hole 43 of the compartment layer plate, as shown in fig. 18), the length direction of the baffle 32 is horizontal, the movable end of the baffle is positioned right behind the operation hole 10 of the drawer front panel, each inner lock hole 30 is aligned with the corresponding outer lock hole 50, so that the drawer 1 cannot move longitudinally, the baffle 32 also blocks the operation hole 10 on the drawer front panel, and the operation handle cannot enter the drawer connecting and pushing mechanism 13 for operation, thereby forming a locking state. In addition, the respective inner locking holes 30 are aligned with the corresponding outer locking holes 50, and both of the inner locking holes 30 and the corresponding outer locking holes 50 are formed with through holes to allow one padlock to be hung and three padlocks to be hung in total, as shown in fig. 12, so that the locking state cannot be changed as long as any one of the padlocks is not detached.
When unlocking is needed, all the padlocks are detached, then the rotating shaft 3 is twisted anticlockwise to be in place, the length direction of the locking piece 33 is rotated to the horizontal direction, and the locking piece 3 is separated from the hollow hole 120 of the drawer bottom plate and the locking tongue hole (the first locking tongue hole 41, the second locking tongue hole 42 or the third locking tongue hole 43) of the compartment layer plate; the length direction of the baffle plate 32 is vertical, the positions of the baffle plate 32 and the drawer front panel operation hole 10 are staggered, and each inner lock hole 30 is staggered with the corresponding outer lock hole 50, so that the drawer 1 can move longitudinally; the operating handle can extend into the drawer 1 and is connected with the drawer pushing mechanism 13 to change the longitudinal position; further, the respective inner lock holes 30 are shifted from the corresponding outer lock holes 50 without forming through holes, that is, the padlock is disabled, and the unlock state is established, as shown in fig. 1, 2, 3, 4, 5, 6, 7, and 8.
Claims (3)
1. A drawer locking mechanism of a low-voltage switch cabinet comprises a loop compartment, wherein the bottom of the loop compartment is a fixed compartment laminate, a drawer is arranged in the loop compartment, a circuit breaker is arranged in the drawer, the drawer is provided with a drawer bottom plate and a drawer front panel, and a drawer pushing mechanism for driving the drawer to move longitudinally is arranged on the drawer bottom plate; the drawer pushing mechanism is matched with an operating handle, an operating hole is formed in the front panel of the drawer, and the operating handle is movably inserted into or separated from the drawer pushing mechanism through the operating hole; the longitudinal moving track of the drawer comprises a separation position, a test position and a connection position;
it is characterized in that the drawer is also provided with a locking component, the locking component comprises a bracket, a rotating shaft extending longitudinally, a strip-shaped blocking piece and a strip-shaped locking tongue piece, the bracket is fixedly connected with the bottom plate of the drawer, and the bracket is positioned beside the pushing mechanism of the drawer; the rotating shaft can be rotatably arranged in the bracket, and the blocking piece, the locking tongue piece and the rotating shaft are fixed into a whole and rotate along with the rotating shaft; the drawer bottom plate is provided with a hollow hole for the lock tongue piece to pass through, the compartment laminate is provided with three lock tongue holes for the lock tongue piece to be embedded in, the three lock tongue holes are arranged from front to back in the same transverse position, and the three lock tongue holes are respectively a first lock tongue hole, a second lock tongue hole and a third lock tongue hole; when the drawer is positioned at the separation position, the longitudinal position of the lock tongue piece is aligned with the first lock tongue hole; when the drawer is positioned at the test position, the longitudinal position of the lock tongue piece is aligned with the second lock tongue hole; when the drawer is positioned at the connecting position, the longitudinal position of the lock tongue piece is aligned with the third lock tongue hole; the longitudinal position of the baffle plate is positioned between the drawer pushing mechanism and the drawer front panel;
when the length direction of the locking piece rotates to the vertical direction and the movable end of the locking piece is positioned below the rotating shaft, the locking piece penetrates through the hollow hole of the drawer bottom plate and the movable end of the locking piece is embedded into one locking piece hole of the compartment layer plate, the length direction of the blocking piece is the horizontal direction, and the movable end of the blocking piece is positioned right behind the drawer front panel operation hole;
when the length direction of the lock tongue piece rotates to the horizontal direction, the lock tongue piece is separated from the hollow hole of the drawer bottom plate and the lock tongue hole of the compartment layer plate, the length direction of the blocking piece is the vertical direction, and the blocking piece is staggered with the position of the operation hole of the drawer front panel.
2. The low-voltage switchgear drawer latch mechanism of claim 1, wherein: an outer ring sleeve is fixedly arranged on the front panel of the drawer and is exposed out of the front panel of the drawer; the front section of the rotating shaft can be rotatably positioned in the outer ring sleeve; the front section of the rotating shaft is provided with a plurality of inner lock holes for the lock handles of the padlock to pass through, the outer ring sleeve is provided with a plurality of outer lock holes for the lock handles of the padlock to pass through, and the number of the inner lock holes and the number of the outer lock holes are correspondingly the same; when the length direction of the lock tongue piece rotates to the vertical direction and the movable end of the lock tongue piece is positioned below the rotating shaft, each inner lock hole rotates to the position respectively aligned to the corresponding outer lock hole.
3. The low-voltage switchgear drawer lock mechanism as claimed in claim 2, wherein: the number of the inner lock holes is three, and the number of the outer lock holes is three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020711219.3U CN211908173U (en) | 2020-05-04 | 2020-05-04 | Drawer locking mechanism of low-voltage switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020711219.3U CN211908173U (en) | 2020-05-04 | 2020-05-04 | Drawer locking mechanism of low-voltage switch cabinet |
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| Publication Number | Publication Date |
|---|---|
| CN211908173U true CN211908173U (en) | 2020-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020711219.3U Active CN211908173U (en) | 2020-05-04 | 2020-05-04 | Drawer locking mechanism of low-voltage switch cabinet |
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| CN (1) | CN211908173U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114123006A (en) * | 2022-01-25 | 2022-03-01 | 山东万海电气科技有限公司 | Drawer type low-voltage switch cabinet with locking mechanism |
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2020
- 2020-05-04 CN CN202020711219.3U patent/CN211908173U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114123006A (en) * | 2022-01-25 | 2022-03-01 | 山东万海电气科技有限公司 | Drawer type low-voltage switch cabinet with locking mechanism |
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