Front-meter air switch interlocking device for meter replacement
By designing an interlocking device for empty opening in front of the watch, using the interlocking mechanism between the interlocking shell and the switch knife, the safety hazards caused by the mistaken closing in the existing watch replacement operation are solved, and higher operation safety and operation convenience are achieved.
Patent Information
- Application Number
- CN202410982727.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-22
- Publication Date
- 2025-04-18
AI Technical Summary
In the existing table change operation methods, it is difficult to prevent the sign from being touched or sent by mistake, causing empty opening and closing of the front table, which poses safety hazards and is inconvenient to operate.
A meter front empty opening interlocking device is designed for meter replacement, which can be interlocked with the interlocking shell and the switch knife that is emptied in front of the meter to ensure that the meter front empty opening is in the open state and avoid accidentally closing the gate. The device includes an open receptacle cavity and a knife receptacle cavity. When the switch knife is in the open receptacle state, the switch knife is locked in the knife receptacle cavity after inserting the open receptacle cavity.
It effectively avoids the safety hazards of opening and closing of the front table due to accidental contact or mistransmitting, ensures the safety of operations, simplifies the operation process, and improves the safety and convenience of the watch replacement operation.
Smart Images
Figure CN119852115A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of distribution meter replacement operations, and in particular to a pre-meter circuit breaker interlocking device for meter replacement. Background Art
[0002] According to the Technical Management Regulations for Distribution Meter Metering Devices, the rotation period for Class I, II, and III meters is 3-4 years, the rotation period for Class IV meters is 4-6 years, and the rotation period for Class V meters is 6-10 years. When a distribution meter reaches its rotation period or needs to be replaced due to a fault, a meter replacement operation is required. The current method of replacing a meter is as follows: deactivate the circuit breaker in front of the meter (i.e., push the knife of the circuit breaker in front of the meter downward to put it in the open state), and then hang a "Do not close the circuit breaker, someone is working" sign at the knife of the circuit breaker in front of the meter to remind the staff to avoid the circuit breaker in front of the meter being accidentally sent or touched during operation, and closing the circuit breaker. However, this current operation method has the following shortcomings: First, during the operation, the operators are likely to touch the signboards, causing them to fall off and affecting work safety.
[0003] Secondly, although the signboard can effectively remind the staff, it cannot prevent accidental contact or mis-transmission, which may lead to the closing of the switch and cause safety hazards. Summary of the invention
[0004] The purpose of the present invention is to provide a pre-meter circuit breaker interlocking device for meter replacement which is not only easy to operate but also can be interlocked with the pre-meter circuit breaker to ensure that the pre-meter circuit breaker is in an open state, thereby avoiding the problem of safety hazards caused by the pre-meter circuit breaker being closed due to accidental contact or mis-transmission.
[0005] The technical solution of the present invention is: A meter front circuit breaker interlocking device for changing a meter, wherein the switch blade of the meter front circuit breaker includes a closing state and an opening state, and comprises an interlocking housing, on which a circuit breaker accommodating cavity with an opening on one side adapted to the meter front circuit breaker is provided, and a switch blade accommodating cavity is provided on one side of the bottom wall of the circuit breaker accommodating cavity. When the switch is in the open state, insert the front circuit breaker into the circuit breaker accommodating cavity, and the switch enters the switch accommodating cavity, so that the interlock housing is installed on the front circuit breaker. At this time, the switch is locked in the switch accommodating cavity; When the knife is in the closed state, when the front circuit breaker is inserted into the circuit breaker accommodating chamber, the knife will be against the bottom wall of the circuit breaker accommodating chamber and cannot enter the knife accommodating chamber. At this time, the interlocking housing cannot be installed on the front circuit breaker. The specific use of the front circuit breaker interlocking device for meter replacement in this scheme is as follows: When changing the meter, you need to first push the open switch in front of the meter downward to put it in the open state; Next, insert the meter front switch into the switch accommodating cavity, and insert the knife into the knife accommodating cavity, so that the interlocking housing is installed on the meter front switch. At this time, the knife is locked in the knife accommodating cavity; before removing the interlocking housing, the operator cannot turn the knife of the meter front switch, so the meter front switch can be ensured to be in the open state, avoiding the problem of safety hazards caused by the meter front switch closing due to accidental contact or misfeeding. In addition, when using a meter front switch interlocking device for changing a meter in this scheme, it only needs to install the interlocking housing on the meter front switch, which is easy to operate.
[0006] On the other hand, when replacing the meter, if the operator forgets to push down the knife of the circuit breaker in front of the meter, the circuit breaker in front of the meter remains in the closed state. Then, when the operator inserts the circuit breaker in front of the meter into the circuit breaker accommodating chamber, the knife will rest against the bottom wall of the circuit breaker accommodating chamber and cannot enter the knife accommodating chamber. At this time, the interlock housing cannot be installed on the circuit breaker in front of the meter, forcing the operator to push down the knife of the circuit breaker in front of the meter first to put it in the open state before the interlock housing can be installed on the circuit breaker in front of the meter. This avoids the situation where the operator forgets to push down the knife of the circuit breaker in front of the meter, the circuit breaker in front of the meter remains in the closed state, and the interlock housing is installed on the circuit breaker in front of the meter, which may cause safety hazards in the operation.
[0007] Preferably, the bottom wall of the open accommodating cavity is provided with a bottom wall groove, and the bottom wall groove constitutes the gate blade accommodating cavity, so as to facilitate the actual processing and manufacturing of the interlocking housing and the gate blade accommodating cavity.
[0008] Preferably, the bottom wall groove passes through the outer side of the interlock housing. In this way, after the interlock housing is installed on the front switch, the operator can directly observe the switch blade through the bottom wall groove, and the switch blade is locked in the switch blade accommodating cavity, and the operator cannot turn the switch blade of the front switch of the meter.
[0009] Preferably, a blocking protrusion is provided on the bottom wall of the empty accommodating cavity, and the space enclosed by the blocking protrusion and the bottom wall and one side wall of the empty accommodating cavity constitutes the gate blade accommodating cavity; When the knife is in the closed state, when the front switch is inserted into the switch accommodating cavity, the knife will abut against the blocking protrusion on the bottom wall of the switch accommodating cavity and cannot enter the knife accommodating cavity.
[0010] As a preference, a locking mechanism is also included, which comprises: The push-out elastic member is arranged on the bottom wall of the open accommodating cavity; A side wall through groove is arranged on the side wall of the open accommodating cavity; An eccentric wheel is rotatably arranged in the side wall through groove and close to the bottom wall of the open accommodating cavity, and a handle is provided on the eccentric wheel; The elastic member is driven to drive the eccentric wheel to rotate into the open accommodating cavity; During the process of inserting the front meter switch into the switch accommodating chamber, the elastic member is pushed out to abut against the front meter switch and provide elastic force to push out the interlocking shell; when the knife blade enters the knife blade accommodating chamber and the front meter switch is close to or against the bottom wall of the switch accommodating chamber, the eccentric wheel abuts against the outer surface of the front meter switch to restrict the interlocking shell on the front meter switch. In the actual use of a front meter switch interlocking device for changing meters, it may happen that the knife blade of the front meter switch is in the open state, and the front meter switch is not inserted to the bottom during the insertion into the switch accommodating chamber (the front meter switch is only inserted a little), and the interlocking shell is not installed in place, which makes the interlocking shell easy to fall off, resulting in the problem of the interlocking shell falling off during the meter changing operation. In order to solve this problem, the present scheme provides an in-place locking mechanism. Specifically, During the process of inserting the front watch empty switch into the empty switch accommodating cavity, after the front watch empty switch is inserted to the bottom of the empty switch accommodating cavity (when the front watch empty switch is close to or against the bottom wall of the empty switch accommodating cavity), the eccentric wheel abuts against the outer surface of the front watch empty switch. At this time, the eccentric wheel restricts the interlocking shell on the front watch empty switch to prevent the interlocking shell from being pushed out and falling by the elastic part.
[0011] If the front switch is not inserted to the bottom of the switch accommodating cavity and the eccentric wheel does not rest against the side wall of the front switch during the insertion of the front switch into the switch accommodating cavity, the operator releases the interlocking shell; the interlocking shell will be pushed out by the elastic member and fall directly; thereby forcing the operator to install the interlocking shell in accordance with the standard operation, effectively solving the problem of the interlocking shell not being installed in place, causing the interlocking shell to fall off easily, and the interlocking shell falling off during the meter replacement operation.
[0012] Preferably, the ejecting elastic member is a compression spring or a spring leaf.
[0013] Preferably, an elastic member receiving groove is provided on the bottom wall of the spacer receiving cavity, and one end of the ejecting elastic member is fixed on the inner wall of the elastic member receiving groove. Thus, after the interlocking housing is installed on the front spacer, the ejecting elastic member is compressed and received in the elastic member receiving groove.
[0014] Preferably, one end of the handle extends from the side wall through slot to the outside of the interlocking housing.
[0015] Preferably, the interlock housing is an insulating housing, so that the operation safety after the interlock housing is installed on the circuit breaker in front of the meter can be guaranteed to avoid electric shock accidents.
[0016] Preferably, an identification plate is provided on the outer surface of the interlocking housing.
[0017] The beneficial effects of the present invention are: Firstly, it can ensure that the circuit breaker in front of the meter is in the open state, avoiding the problem of safety hazards caused by the closing of the circuit breaker in front of the meter due to accidental contact or mis-transmission.
[0018] Secondly, it can avoid the situation where the operator forgets to push down the switch of the circuit breaker in front of the meter, and the circuit breaker in front of the meter remains in the closed state, and then the interlock housing is installed on the circuit breaker in front of the meter, which may cause operational safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a structural schematic diagram of a front-of-meter air switch interlocking device for meter replacement during use of specific embodiments 1 and 2 of the present invention.
[0020] Figure 2 It is another structural schematic diagram of a front-of-meter air switch interlocking device for meter replacement during use of the specific embodiment 1 and the specific embodiment 2 of the present invention.
[0021] Figure 3 The present invention is a schematic structural diagram of a front-of-meter air-breaker interlocking device for meter replacement during use in accordance with a third specific embodiment of the present invention.
[0022] Figure 4 It is a structural schematic diagram of a front-of-meter air switch interlocking device for meter replacement according to a fourth specific embodiment of the present invention.
[0023] Figure 5 The present invention is a schematic structural diagram of a front-of-meter air-breaker interlocking device for meter replacement during use in accordance with a fourth specific embodiment of the present invention.
[0024] In the figure: There is one empty switch in front of the meter, and the switch is 1.1; Interlocking housing 2, open accommodating cavity 2.1, bottom wall 2.2, side wall 2.3, blocking protrusion 2.4; Blade accommodating chamber 3, bottom wall groove 3.1; The locking mechanism 4 has an elastic member 4.1, an elastic member receiving groove 4.2, a side wall through groove 4.3, an eccentric wheel 4.4 and a handle 4.5. DETAILED DESCRIPTION
[0025] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: Specific embodiment 1, as Figure 1 , Figure 2 As shown, a meter front circuit breaker interlocking device for changing a meter includes an interlocking housing 2. The switch blade 1.1 of the meter front circuit breaker 1 includes a closing state and an opening state. Specifically, when the switch blade 1.1 of the meter front circuit breaker 1 is pushed upward to the right position, the switch blade 1.1 is in the closing state; when the switch blade 1.1 of the meter front circuit breaker 1 is pushed downward to the right position, the switch blade 1.1 is in the opening state.
[0026] The interlock housing 2 is provided with a switch accommodating chamber 2.1 with one side opening adapted to the front switch 1. A switch accommodating chamber 3 is provided on one side of the bottom wall 2.2 of the switch accommodating chamber 2.1. The bottom wall 2.2 of the switch accommodating chamber 2.1 is arranged opposite to the opening of one side of the switch accommodating chamber 2.1.
[0027] When the knife switch 1.1 is in the open state, the front switch 1 is inserted into the switch accommodating chamber 2.1, and the knife switch 1.1 enters the knife switch accommodating chamber 3, so that the interlocking housing 2 is installed on the front switch 1. At this time, the knife switch 1.1 is locked in the knife switch accommodating chamber 3.
[0028] When the knife switch 1.1 is in the closed state, when the front switch 1 is inserted into the switch accommodating chamber 2.1, the knife switch 1.1 will abut against the bottom wall 2.2 of the switch accommodating chamber 2.1 and cannot enter the knife switch accommodating chamber 3. At this time, the interlocking housing 2 cannot be installed on the front switch 1.
[0029] The specific use of the front-of-meter air switch interlocking device for meter replacement in this embodiment is as follows: like Figure 1 As shown in the figure, when changing the meter, first push the switch 1.1 of the circuit breaker 1 in front of the meter downward to put it in the open state; Then, if Figure 1 As shown, the front-meter switch 1 is inserted into the switch accommodating chamber 2.1, and the knife 1.1 enters the knife accommodating chamber 3 until the front-meter switch 1 is against the bottom wall 2.2 of the switch accommodating chamber 2.1, so that the interlocking shell 2 is installed on the front-meter switch 1. At this time, the inner side surface of the switch accommodating chamber 2.1 is close to the outer side surface of the front-meter switch 1, and the knife 1.1 is locked in the knife accommodating chamber 3. Before removing the interlocking shell 2, the operator cannot move the knife 1.1 of the front-meter switch 1, so that the front-meter switch 1 can be ensured to be in the open state, avoiding the problem of safety hazards caused by the closing of the front-meter switch 1 due to accidental contact or misfeeding. In addition, when using a front-meter switch interlocking device for changing a meter in this scheme, it is only necessary to install the interlocking shell 2 on the front-meter switch 1, which is easy to operate.
[0030] On the other hand, Figure 2As shown, during the meter replacement operation, if the operator forgets to push down the knife 1.1 of the meter front switch 1, the meter front switch 1 remains in the closed state, then when the operator inserts the meter front switch 1 into the switch accommodating chamber 2.1, the knife 1.1 will rest against the bottom wall 2.2 of the switch accommodating chamber 2.1 and cannot enter the knife accommodating chamber 3. At this time, the interlock housing 2 cannot be installed on the meter front switch 1; thus forcing the operator to push down the knife 1.1 of the meter front switch 1 first to put it in the open state; only then can the interlock housing 2 be installed on the meter front switch 1; thus avoiding the operating safety hazards caused by the operator forgetting to push down the knife 1.1 of the meter front switch 1, the meter front switch 1 remains in the closed state, and then installing the interlock housing 2 on the meter front switch 1.
[0031] Specific embodiment 2, as Figure 1 , Figure 2 As shown, a meter front circuit breaker interlocking device for changing a meter includes an interlocking housing 2. The switch blade 1.1 of the meter front circuit breaker 1 includes a closing state and an opening state. Specifically, when the switch blade 1.1 of the meter front circuit breaker 1 is pushed upward to the right position, the switch blade 1.1 is in the closing state; when the switch blade 1.1 of the meter front circuit breaker 1 is pushed downward to the right position, the switch blade 1.1 is in the opening state.
[0032] The interlock housing 2 is provided with a switch accommodating chamber 2.1 with one side opening adapted to the front switch 1. A switch blade accommodating chamber 3 is provided on one side of the bottom wall 2.2 of the switch accommodating chamber 2.1. In this embodiment, the bottom wall 2.2 of the switch accommodating chamber 2.1 is provided with a bottom wall groove 3.1, and the bottom wall groove 3.1 constitutes the switch blade accommodating chamber 3. In this way, the actual processing and manufacturing of the interlock housing 2 and the switch blade accommodating chamber 3 is facilitated.
[0033] The bottom wall 2.2 of the open accommodating chamber 2.1 is arranged opposite to a side opening of the open accommodating chamber 2.1.
[0034] When the knife switch 1.1 is in the open state, the front switch 1 is inserted into the switch accommodating chamber 2.1, and the knife switch 1.1 enters the knife switch accommodating chamber 3, so that the interlocking housing 2 is installed on the front switch 1. At this time, the knife switch 1.1 is locked in the knife switch accommodating chamber 3.
[0035] When the knife switch 1.1 is in the closed state, when the front switch 1 is inserted into the switch accommodating chamber 2.1, the knife switch 1.1 will abut against the bottom wall 2.2 of the switch accommodating chamber 2.1 and cannot enter the knife switch accommodating chamber 3. At this time, the interlocking housing 2 cannot be installed on the front switch 1.
[0036] The specific use of the front-of-meter air switch interlocking device for meter replacement in this embodiment is as follows: like Figure 1 As shown in the figure, when changing the meter, first push the switch 1.1 of the circuit breaker 1 in front of the meter downward to put it in the open state; Then, if Figure 1 As shown, the front-meter switch 1 is inserted into the switch accommodating chamber 2.1, and the knife 1.1 enters the knife accommodating chamber 3 until the front-meter switch 1 is against the bottom wall 2.2 of the switch accommodating chamber 2.1, so that the interlocking shell 2 is installed on the front-meter switch 1. At this time, the inner side surface of the switch accommodating chamber 2.1 is close to the outer side surface of the front-meter switch 1, and the knife 1.1 is locked in the knife accommodating chamber 3. Before removing the interlocking shell 2, the operator cannot move the knife 1.1 of the front-meter switch 1, so that the front-meter switch 1 can be ensured to be in the open state, avoiding the problem of safety hazards caused by the closing of the front-meter switch 1 due to accidental contact or misfeeding. In addition, when using a front-meter switch interlocking device for changing a meter in this scheme, it is only necessary to install the interlocking shell 2 on the front-meter switch 1, which is easy to operate.
[0037] On the other hand, Figure 2 As shown, during the meter replacement operation, if the operator forgets to push down the knife 1.1 of the meter front switch 1, the meter front switch 1 remains in the closed state, then when the operator inserts the meter front switch 1 into the switch accommodating chamber 2.1, the knife 1.1 will rest against the bottom wall 2.2 of the switch accommodating chamber 2.1 and cannot enter the knife accommodating chamber 3. At this time, the interlock housing 2 cannot be installed on the meter front switch 1; thus forcing the operator to push down the knife 1.1 of the meter front switch 1 first to put it in the open state; only then can the interlock housing 2 be installed on the meter front switch 1; thus avoiding the operating safety hazards caused by the operator forgetting to push down the knife 1.1 of the meter front switch 1, the meter front switch 1 remains in the closed state, and then installing the interlock housing 2 on the meter front switch 1.
[0038] Furthermore, the interlock housing 2 is an insulating housing. In this way, the operation safety of the interlock housing 2 after being installed on the front circuit breaker 1 can be ensured to avoid electric shock accidents. In this embodiment, the interlock housing 2 is integrally injection molded.
[0039] Furthermore, a sign is provided on the outer surface of the interlock housing 2. The sign has a sign "Do not close the switch, someone is working". In this way, it can serve as a reminder and warning to the operator during the meter replacement operation.
[0040] Further, such as Figure 1 , Figure 2 As shown, the bottom wall groove 3.1 penetrates the outer side of the interlock housing 2. In this way, after the interlock housing 2 is installed on the front switch 1, the operator can directly observe the switch blade 1.1 through the bottom wall groove 3.1, and the switch blade 1.1 is locked in the switch blade accommodating cavity 3, and the operator cannot move the switch blade 1.1 of the front switch 1.
[0041] Specific embodiment three, as Figure 3As shown, a meter front circuit breaker interlocking device for changing a meter includes an interlocking housing 2. The switch blade 1.1 of the meter front circuit breaker 1 includes a closing state and an opening state. Specifically, when the switch blade 1.1 of the meter front circuit breaker 1 is pushed upward to the right position, the switch blade 1.1 is in the closing state; when the switch blade 1.1 of the meter front circuit breaker 1 is pushed downward to the right position, the switch blade 1.1 is in the opening state.
[0042] The interlock housing 2 is provided with a spacer accommodating chamber 2.1 with one side opening adapted to the front spacer 1. A knife accommodating chamber 3 is provided on one side of the bottom wall 2.2 of the spacer accommodating chamber 2.1. In this embodiment, a blocking protrusion 2.4 is provided on the bottom wall 2.2 of the spacer accommodating chamber 2.1, and the space enclosed by the blocking protrusion 2.4, the bottom wall 2.2 of the spacer accommodating chamber 2.1, and a side wall 2.3 of the spacer accommodating chamber 2.1 constitutes the knife accommodating chamber 3.
[0043] The bottom wall 2.2 of the open accommodating chamber 2.1 is arranged opposite to a side opening of the open accommodating chamber 2.1.
[0044] When the knife switch 1.1 is in the open state, the front switch 1 is inserted into the switch accommodating chamber 2.1, and the knife switch 1.1 enters the knife switch accommodating chamber 3, so that the interlocking housing 2 is installed on the front switch 1. At this time, the knife switch 1.1 is locked in the knife switch accommodating chamber 3.
[0045] When the knife switch 1.1 is in the closed state, when the front switch 1 is inserted into the switch accommodating cavity 2.1, the knife switch 1.1 will abut against the blocking protrusion 2.4 of the bottom wall 2.2 of the switch accommodating cavity 2.1 and cannot enter the knife switch accommodating cavity 3. At this time, the interlocking housing 2 cannot be installed on the front switch 1.
[0046] The specific use of the front-of-meter air switch interlocking device for meter replacement in this embodiment is as follows: like Figure 3 As shown in the figure, when changing the meter, first push the switch 1.1 of the circuit breaker 1 in front of the meter downward to put it in the open state; Then, if Figure 3 As shown, the front-meter switch 1 is inserted into the switch accommodating chamber 2.1, and the knife 1.1 enters the knife accommodating chamber 3 until the front-meter switch 1 is against the bottom wall 2.2 of the switch accommodating chamber 2.1, so that the interlocking shell 2 is installed on the front-meter switch 1. At this time, the inner side surface of the switch accommodating chamber 2.1 is close to the outer side surface of the front-meter switch 1, and the knife 1.1 is locked in the knife accommodating chamber 3. Before removing the interlocking shell 2, the operator cannot move the knife 1.1 of the front-meter switch 1, so that the front-meter switch 1 can be ensured to be in the open state, avoiding the problem of safety hazards caused by the closing of the front-meter switch 1 due to accidental contact or misfeeding. In addition, when using a front-meter switch interlocking device for changing a meter in this scheme, it is only necessary to install the interlocking shell 2 on the front-meter switch 1, which is easy to operate.
[0047] On the other hand, during the meter replacement operation, if the operator forgets to push down the knife 1.1 of the meter front switch 1, the meter front switch 1 remains in the closed state. Then, when the operator inserts the meter front switch 1 into the switch accommodating chamber 2.1, the knife 1.1 will abut against the blocking protrusion 2.4 of the bottom wall 2.2 of the switch accommodating chamber 2.1 and cannot enter the knife accommodating chamber 3. At this time, the interlock housing 2 cannot be installed on the meter front switch 1; thus, the operator is forced to push down the knife 1.1 of the meter front switch 1 first to put it in the open state; only then can the interlock housing 2 be installed on the meter front switch 1; thus avoiding the situation where the operator forgets to push down the knife 1.1 of the meter front switch 1, the meter front switch 1 remains in the closed state, and then installs the interlock housing 2 on the meter front switch 1, which may cause operational safety hazards.
[0048] Furthermore, the interlock housing 2 is an insulating housing. In this way, the operation safety of the interlock housing 2 after being installed on the front switch 1 can be ensured to avoid electric shock accidents. In this embodiment, the interlock housing 2 is integrally injection molded, and the blocking protrusion 2.4 is integrally injection molded with the interlock housing 2.
[0049] Furthermore, a sign is provided on the outer surface of the interlock housing 2. The sign has a sign "Do not close the switch, someone is working". In this way, it can serve as a reminder and warning to the operator during the meter replacement operation.
[0050] Specific embodiment 4: The rest of the structure of this embodiment refers to specific embodiment 1, specific embodiment 2 or specific embodiment 3, except that: like Figure 4 , Figure 5 As shown, a front air switch interlocking device for meter replacement also includes an in-position locking mechanism 4. The in-position locking mechanism 4 includes a push-out elastic member 4.1, a side wall through slot 4.3, an eccentric wheel 4.4 and a driving elastic member.
[0051] The side wall through groove 4.3 is provided on the side wall 2.3 of the open accommodating chamber 2.1. The side wall through groove 4.3 penetrates the side wall 2.3 of the open accommodating chamber 2.1. The eccentric wheel 4.4 is rotatably provided in the side wall through groove 4.3 and is close to the bottom wall 2.2 of the open accommodating chamber 2.1 through the rotating shaft. In this embodiment, the center of the eccentric wheel 4.4 and the bottom wall 2.2 of the open accommodating chamber 2.1 are located on the same side of the rotating shaft. A handle 4.5 is provided on the eccentric wheel 4.4, and one end of the handle 4.5 extends from the side wall through groove 4.3 to the outside of the interlocking shell 2. The driving elastic member drives the eccentric wheel 4.4 to rotate into the open accommodating chamber 2.1 until the handle 4.5 abuts against the inner wall of the side wall through groove 4.3. The driving elastic member is a spring or a torsion spring. In this embodiment, the driving elastic member is a torsion spring.
[0052] The ejecting elastic member 4.1 is disposed on the bottom wall 2.2 of the open accommodating cavity 2.1.
[0053] In one implementation of this embodiment, the ejection elastic member 4.1 is a compression spring.
[0054] In another implementation manner of this embodiment, the ejection elastic member 4.1 is a spring leaf, such as a V-shaped spring leaf or a Z-shaped spring leaf.
[0055] During the process of inserting the front meter switch 1 into the switch accommodating chamber 2.1, the push-out elastic member 4.1 abuts against the front meter switch 1 and provides elastic force to eject the interlocking housing 2. During the process of inserting the front meter switch 1 into the switch accommodating chamber 2.1, when the front meter switch 1 abuts against the eccentric wheel 4.4, the front meter switch 1 will push the eccentric wheel 4.4 to rotate around the rotation axis to the outside of the switch accommodating chamber 2.1, and abut against the side wall 2.3 of the front meter switch 1 under the action of the driving elastic member, and the front meter switch 1 is not restricted by the eccentric wheel 4.4 during the process of inserting the front meter switch 1 into the switch accommodating chamber 2.1; when the gate knife 1.1 enters the gate knife accommodating chamber 3 and the front meter switch 1 approaches or abuts against the bottom wall 2.2 of the switch accommodating chamber 2.1, the eccentric wheel 4.4 abuts against the outer surface of the front meter switch 1. When the eccentric wheel 4.4 abuts against the outer surface of the front opening 1 of the watch, the eccentric wheel 4.4 restricts the interlocking housing 2 on the front opening 1 of the watch to prevent the interlocking housing 2 from being pushed out of the elastic member 4.1 and falling off.
[0056] In the actual use of a front-of-meter switch interlocking device for meter replacement, it may happen that due to improper operation or negligence of the operator, when the knife 1.1 of the front-of-meter switch 1 is in the open state, the front-of-meter switch 1 is inserted into the switch accommodating chamber 2.1, but the front-of-meter switch 1 is not inserted to the bottom (the front-of-meter switch 1 is only inserted a little), and the interlocking shell 2 is not installed in place, which makes the interlocking shell 2 easy to fall off, and the interlocking shell 2 falls off during the meter replacement operation. In order to solve this problem, the present solution provides an in-place locking mechanism 4, specifically, like Figure 5 As shown, when the knife 1.1 of the meter front switch 1 is in the open state; insert the meter front switch 1 into the switch accommodating chamber 2.1, during which the knife 1.1 enters the knife accommodating chamber 3, and when the meter front switch 1 is inserted to the bottom of the switch accommodating chamber 2.1 (when the meter front switch 1 is close to or against the bottom wall 2.2 of the switch accommodating chamber 2.1), the eccentric wheel 4.4 abuts against the outer surface of the meter front switch 1 until the meter front switch 1 abuts against the bottom wall 2.2 of the switch accommodating chamber 2.1, so that the interlocking housing 2 is installed on the meter front switch 1. At this time, the eccentric wheel 4.4 restricts the interlocking housing 2 on the meter front switch 1, preventing the interlocking housing 2 from being pushed out of the elastic member 4.1 and falling off, which will not affect the normal use of the interlocking housing 2.
[0057] If during the process of inserting the front meter open space 1 into the open space accommodating chamber 2.1, the front meter open space 1 is not inserted to the bottom of the open space accommodating chamber 2.1, and the eccentric wheel 4.4 does not abut against the outer side of the front meter open space 1, the operator releases the interlocking shell 2; then the interlocking shell 2 will be pushed out by the push-out elastic member 4.1 and fall directly, thereby forcing the operator to install the interlocking shell 2 according to the standard operation, insert the front meter open space 1 into the open space accommodating chamber 2.1, until the front meter open space 1 abuts against the bottom wall 2.2 of the open space accommodating chamber 2.1, so that the knife gate 1.1 enters the knife gate accommodating chamber 3; make the eccentric wheel 4.4 abut against the outer side of the front meter open space 1, restrict the interlocking shell 2 on the front meter open space 1, so as to prevent the interlocking shell 2 from being pushed out and falling by the push-out elastic member 4.1, thereby allowing the interlocking shell 2 to be installed on the front meter open space 1. Therefore, the problem that the interlock housing 2 is not properly installed, causing the interlock housing 2 to fall off easily, and the interlock housing 2 falls off during the meter replacement operation can be effectively solved.
[0058] After the meter replacement operation is completed, the operator drives the eccentric wheel 4.4 to rotate through the handle 4.5 to separate the eccentric wheel 4.4 from the outer side of the meter front switch 1. After that, the interlocking housing 2 can be easily removed from the meter front switch 1.
[0059] There are one or more eccentric wheels 4.4. The side wall through slots 4.3 correspond to the eccentric wheels 4.4 one by one, and the driving elastic members correspond to the eccentric wheels 4.4 one by one. Each eccentric wheel 4.4 is provided with a handle 4.5.
[0060] In this embodiment, Figure 4 , Figure 5 As shown, there are two eccentric wheels 4.4 and two side wall through slots 4.3. The side wall through slots 4.3 are located on the two opposite side walls 2.3 of the open accommodating cavity 2.1. The eccentric wheels 4.4 are rotatably arranged in the corresponding side wall through slots 4.3.
[0061] Furthermore, the eccentric wheel 4.4 and the handle 4.5 are both made of insulating materials. In this embodiment, the eccentric wheel 4.4 and the handle 4.5 are formed by one-step injection molding.
[0062] Further, such as Figure 4 , Figure 5 As shown, the bottom wall 2.2 of the spacer accommodating chamber 2.1 is provided with an elastic member accommodating groove 4.2, and one end of the ejecting elastic member 4.1 is fixed to the inner wall of the elastic member accommodating groove 4.2. Thus, after the interlocking housing 2 is installed on the front spacer 1, the ejecting elastic member 4.1 is compressed and accommodated in the elastic member accommodating groove 4.2.
[0063] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent transformation made to the above embodiment based on the technical essence of the present invention still falls within the protection scope of the technical solution of the present invention.
Claims
1. A front-of-meter circuit breaker interlocking device for meter replacement, the front-of-meter circuit breaker includes a closing state and an opening state, and is characterized in that: It comprises an interlocking housing, on which a hole accommodating cavity with one side opening adapted to the hole in front of the meter is provided, and a knife accommodating cavity is provided on one side of the bottom wall of the hole accommodating cavity. When the switch is in the open state, insert the front circuit breaker into the circuit breaker accommodating cavity, and the switch enters the switch accommodating cavity, so that the interlock housing is installed on the front circuit breaker. At this time, the switch is locked in the switch accommodating cavity; When the knife switch is in the closed state, when the front switch of the meter is inserted into the switch accommodating cavity, the knife switch will be against the bottom wall of the switch accommodating cavity and cannot enter the knife switch accommodating cavity. At this time, the interlocking shell cannot be installed on the front switch of the meter.
2. A front-of-meter air switch interlocking device for meter replacement according to claim 1, characterized in that: The bottom wall of the open accommodating cavity is provided with a bottom wall groove, and the bottom wall groove constitutes the blade accommodating cavity.
3. A front-of-meter air switch interlocking device for meter replacement according to claim 2, characterized in that: The bottom wall groove passes through the outer side surface of the interlocking shell.
4. The front-of-meter air switch interlocking device for meter replacement according to claim 1 is characterized in that: The bottom wall of the open accommodating cavity is provided with a blocking protrusion, and the space enclosed by the blocking protrusion and the bottom wall and one side wall of the open accommodating cavity constitutes the gate blade accommodating cavity; When the knife is in the closed state, when the front switch is inserted into the switch accommodating cavity, the knife will abut against the blocking protrusion on the bottom wall of the switch accommodating cavity and cannot enter the knife accommodating cavity.
5. A front-of-meter air switch interlocking device for meter replacement according to claim 1, 2, 3 or 4, characterized in that: Also included is a locking mechanism in place comprising: The push-out elastic member is arranged on the bottom wall of the open accommodating cavity; A side wall through groove is arranged on the side wall of the open accommodating cavity; An eccentric wheel is rotatably arranged in the side wall through groove and close to the bottom wall of the open accommodating cavity, and a handle is provided on the eccentric wheel; The elastic member is driven to drive the eccentric wheel to rotate into the open accommodating cavity; During the process of inserting the front meter switch into the switch accommodating cavity, the elastic member is pushed out to press against the front meter switch and provide elastic force to eject the interlocking shell; when the knife gate enters the knife gate accommodating cavity and the front meter switch is close to or against the bottom wall of the switch accommodating cavity, the eccentric wheel presses against the outer surface of the front meter switch to limit the interlocking shell on the front meter switch.
6. A front-of-meter air switch interlocking device for meter replacement according to claim 5, characterized in that: The ejection elastic member is a compression spring or a spring sheet.
7. The interlocking device for a meter front air switch for changing a meter according to claim 5, characterized in that: An elastic member accommodating groove is arranged on the bottom wall of the open accommodating cavity, and one end of the ejecting elastic member is fixed on the inner wall of the elastic member accommodating groove.
8. The front-of-meter air switch interlocking device for meter replacement according to claim 5 is characterized in that: One end of the handle extends from the side wall through slot to the outside of the interlocking housing.
9. A front-of-meter air switch interlocking device for meter replacement according to claim 1, 2, 3 or 4, characterized in that: The interlocking housing is an insulating housing.
10. A front-of-meter air switch interlocking device for meter replacement according to claim 1, 2, 3 or 4, characterized in that: An identification plate is provided on the outer surface of the interlocking housing.