CN110459412B - Dual-power switching power supply electricity taking device and operation method thereof - Google Patents
Dual-power switching power supply electricity taking device and operation method thereof Download PDFInfo
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- CN110459412B CN110459412B CN201910666338.3A CN201910666338A CN110459412B CN 110459412 B CN110459412 B CN 110459412B CN 201910666338 A CN201910666338 A CN 201910666338A CN 110459412 B CN110459412 B CN 110459412B
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- 238000000034 method Methods 0.000 title abstract description 17
- 230000005611 electricity Effects 0.000 title description 3
- 230000003068 static effect Effects 0.000 claims description 65
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 51
- 229910052802 copper Inorganic materials 0.000 claims description 51
- 239000010949 copper Substances 0.000 claims description 51
- 238000009826 distribution Methods 0.000 claims description 32
- 230000033001 locomotion Effects 0.000 claims description 13
- 238000009413 insulation Methods 0.000 claims description 10
- 230000007704 transition Effects 0.000 claims description 7
- 238000013461 design Methods 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 5
- 230000017525 heat dissipation Effects 0.000 claims description 3
- 230000009977 dual effect Effects 0.000 claims 6
- 238000011017 operating method Methods 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 description 9
- 238000010248 power generation Methods 0.000 description 9
- 238000012423 maintenance Methods 0.000 description 8
- 239000002184 metal Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 230000008901 benefit Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
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- 238000007619 statistical method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
- H01H1/38—Plug-and-socket contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/16—Indicators for switching condition, e.g. "on" or "off"
Abstract
The invention relates to a power supply power taking device, in particular to a dual-power switching power supply power taking device and an operation method thereof, and belongs to the field of electric switches. The movable contact assembly is inserted into the fixed contact assembly. And the requirements of users on power utilization continuity and reliability are met.
Description
Technical Field
The invention relates to a power supply power taking device, in particular to a dual-power switching power supply power taking device and an operation method thereof, and belongs to the field of electric switches.
Background
With the development of social economy and the improvement of the living standard of people, the requirements of users on the reliability and the continuity of power supply are higher and higher, and the power failure can cause huge economic loss and serious social influence; the existing low-voltage power distribution cabinets are always powered by a single-path power supply, and once extremely severe weather is met or the components of the power grid power distribution cabinet are failed, large-area power failure is caused; the power supply of only one way is not beneficial to the overhaul of the power grid and the power distribution cabinet, and the power failure of the load end is caused when the power grid or the power distribution cabinet needs periodical overhaul; inherent defects of the existing power distribution cabinet can not meet requirements of users on power utilization continuity and reliability.
The uninterrupted operation of the distribution line is characterized in that the operation method is divided into two types according to whether the electric equipment to be maintained is electrified: firstly, the operation mode of directly on a live line and equipment, namely live operation; secondly, the equipment to be maintained is separated from the power grid by adopting a mobile power supply, bypass equipment and the like in a mode that the equipment cannot be directly subjected to live working, and the equipment is recovered to be in a state before maintenance after being processed in a power failure state, namely comprehensive uninterrupted power operation is required.
The mobile power supply method comprises the following steps: for the current distribution network maintenance work, the projects of changing distribution transformer, transferring pole wires, changing wires and the like are frequently encountered, and one of the biggest characteristics of the projects is that the projects cannot be directly realized through live working. In this case, it is conceivable to perform maintenance work by using a portable power source method. The method has the idea that the continuous power supply to the power user is realized by using the mobile power supply, meanwhile, the power failure treatment is carried out on the line and equipment which are required to be overhauled, and the normal power supply to the user is not influenced when the overhauling operation is carried out. It is clear from the above analysis that one key point of the method is to continuously supply power to the user through a mobile power supply, and the currently adopted mobile power supply is mainly a mobile power generation vehicle, such as a diesel power generation vehicle, an EPS emergency power supply device, a load transfer vehicle and the like. In actual operation, in order to prevent circulation and reverse power transmission, the mobile power generation vehicle is not allowed to be directly connected to the running power grid, but the lines and equipment to be overhauled are isolated from the power grid, and then the power generation vehicle is used for supplying power to the user needing power supply.
Bypass operation method: the overhead lines in the current distribution network are applied more, and the difficulty is increased for the maintenance operation of the lines. Under the condition, a bypass operation method can be considered, namely, a temporary power transmission line is quickly erected on site, then the line is used for bridging a fault section, finally a power supply is led to the temporary bypass power transmission line, and power failure operation is carried out on the fault section, so that maintenance treatment on the fault line is realized while continuous power supply to a user is maintained. When the bypass operation method is adopted, the bypass transmission line is temporary, so the bypass transmission line is generally exposed in a natural environment, the bypass line can be interfered by various external factors, and the improvement of the safety and the reliability of the bypass transmission line is the key of applying the method.
Disclosure of Invention
The invention mainly solves the defects existing in the prior art, provides a solution for a dual-power switching power supply power taking device of a plug-and-play safe and reliable low-voltage power distribution cabinet (0.4 kV), which is suitable for various specifications of low-voltage power distribution equipment busbar (a power distribution system capable of bearing 400A current maximally), does not need a fastener, can be quickly connected, has good current carrying capacity and insulating capacity, can effectively shorten the access time of a mobile power generation vehicle, ensures continuous and reliable power utilization of a user, improves the emergency power capacity, improves the power supply and power-saving efficiency, develops the dual-power switching power supply power taking device to enable the low-voltage power distribution equipment to be more safely and conveniently connected to the mobile power generation vehicle, further realizes on-site uninterrupted operation, and rapidly meets various operation requirements related to a power grid.
The technical problems of the invention are mainly solved by the following technical proposal:
the power taking device of the dual-power switch power supply comprises a fixed contact assembly and a moving contact assembly, wherein the moving contact assembly is inserted into the fixed contact assembly;
the static contact assembly comprises a static contact copper bar and a static contact insulating housing, wherein the static contact copper bar is provided with a static contact extending upwards, the static contact is sleeved with the static contact insulating housing which is fixed with the static contact copper bar, and the static contact insulating housing is internally provided with a guide sleeve communicated with the static contact;
the movable contact assembly comprises a movable contact and a movable contact copper bar, a movable contact insulating housing is sleeved outside the movable contact, a push rod for driving the movable contact to move horizontally is arranged in the movable contact insulating housing, the movable contact copper bar fixed with the movable contact is arranged in the movable contact insulating housing, the push rod drives the movable contact to rotate, and the movable contact stretches into the guide sleeve along the movable contact insulating housing and is fixed with the fixed contact.
Preferably, a tooth-shaped concave limiting end in transition fit with the moving contact is arranged in the inner ring of the fixed contact, an arc-shaped guide groove is arranged outside the guide sleeve, the guide sleeve extends upwards out of the surface of the insulating housing of the fixed contact, and a limiting assembly is arranged in the insulating housing of the fixed contact;
preferably, the limiting component comprises J-shaped barbs, at least two symmetrical end faces of the static contact insulating housing are respectively provided with the J-shaped barbs, the static contact insulating housing is provided with card inlets communicated with the arc-shaped guide grooves, the number of the card inlets is equal to that of the J-shaped barbs, the card inlets and the J-shaped barbs are symmetrically distributed, and the arc-shaped guide grooves, the card inlets and the J-shaped barbs are distributed in a communicating mode.
The movable contact insulating housing is inserted into the arc-shaped guide groove along the guide sleeve, a positioning piece is arranged on the shell of the movable contact insulating housing, the positioning piece is in clamping connection with the J-shaped barb through a clamping inlet, a rectangular groove is formed in the movable contact insulating housing, the movable contact copper bar performs up-and-down limiting movement along the rectangular groove and stretches into the rectangular groove to be fixed with the movable contact, a limiting boss is arranged on the inner ring at the top of the movable contact insulating housing, and the ejector rod freely rotates along the movable contact insulating housing through the limiting boss.
Preferably, the fixed contact copper bar is provided with copper screws which are clamped and fixed with the fixed contact copper bar, the surfaces of the copper screws and the surface of the fixed contact copper bar are distributed in the same horizontal plane, and the copper screws and the fixed contact are fixed through bolts;
the upper end and the lower end of the movable contact insulating housing are respectively provided with a window mounting groove communicated with the inside of the movable contact insulating housing, a transparent observation window is arranged in the window mounting groove, and the movable contact is provided with a closing and opening indication board;
and a heat dissipation hole is formed in the end face of the static contact insulating housing.
Preferably, the upper end of the ejector rod is provided with a concave clamping groove which is connected with the limiting boss in a matching mode, the lower end of the ejector rod is a threaded metal piece which is in threaded connection with the moving contact, the surface of the threaded metal piece is an insulating metal plastic piece, the head of the ejector rod is provided with a hexagonal groove, and the surface of the head of the ejector rod is provided with an on-off rotating direction indication.
Preferably, the moving contact insulating housing comprises a left moving contact insulating housing and a right moving contact insulating housing, the left moving contact insulating housing and the right moving contact insulating housing are distributed in a spliced mode, the rectangular groove is formed in the left moving contact insulating housing or the right moving contact insulating housing, the positioning pieces are respectively arranged in the left moving contact insulating housing and the right moving contact insulating housing, and the pair of positioning pieces are symmetrically distributed.
Preferably, the left moving contact insulating housing and the right moving contact insulating housing are fastened through a pair of hoops which are distributed at intervals, a clamping groove is formed in the moving contact insulating housing, the hoops are embedded into the clamping groove, and the hoops are spring pieces.
Preferably, the left moving contact insulating housing and the right moving contact insulating housing are positioned through a plurality of pairs of bolts, and the observation window is embedded into the splicing position of the left moving contact insulating housing and the right moving contact insulating housing.
The operation method of the power taking device of the dual-power switch power supply is carried out according to the following operation steps:
the copper bar of the moving contact is inserted into a rectangular groove at the bottom of the insulating housing of the moving contact, and the ejector rod is screwed into a threaded hole of the moving contact; the concave clamping groove of the ejector rod is clamped on the limit boss of the insulating housing of the movable contact, so that the ejector rod can rotate freely but cannot do horizontal movement; the movable contact is driven to horizontally move when the ejector rod rotates, so that the aim of screwing the movable contact to indirectly push the movable contact to freely stretch out and draw back is fulfilled, the copper bar of the movable contact is inserted into the rectangular groove at the bottom of the insulating housing of the movable contact to play a limiting role, the movement of the copper bar in the rectangular groove is limited, and the reliability of the movement of the contact is ensured;
the movable contact is a driving part observation window, and the movable contact is a driven part observation window, and is provided with an 'opening and closing' indication, so that when the movable contact moves to the observation range of the observation window, the position of the movable contact can be observed in real time from the position of the observation window;
the movable contact insulating housing is provided with a 30-degree round hole for installing the positioning piece, when the movable contact is installed, the movable contact is firstly adjusted to be horizontally inclined by 30 degrees and is inserted into the J-shaped barb of the fixed contact insulating housing along the guide slot of the fixed contact insulating housing, and the movable ejector rod is screwed to push the movable contact to be inserted into the fixed contact along the guide slot of the fixed contact insulating housing; because the static contact insulating housing adopts a J-shaped barb design, the loose dislocation of the moving contact can be effectively prevented when the ejector rod is screwed;
the static contact is designed into a round shape, a circle of tooth-shaped concave limit is arranged in the static contact and is in transition fit with the moving contact, and when the moving contact is inserted into the static contact, the tooth-shaped limit is jacked up and can be inserted into the static contact.
The movable contact insulating housing is symmetrically spliced and installed, a round embedded nut is arranged at the screw fastening position of the movable contact insulating housing, one end of the insulating housing is provided with a limiting boss, and the movable contact insulating housing is in limiting installation;
one end of the ejector rod is a full-thread metal push rod, the other end of the ejector rod is a main support piece, a concave clamping groove is formed in the cylindrical surface of the main support piece, a knob is embedded in the head of the main support piece, the knob is made of metal, and the mechanical strength of the ejector rod operation is guaranteed; the bearing part of the push rod is made of metal parts and the operating surface is made of insulating plastic parts, so that the structural strength of the push rod is met, and the safety insulation of the operating surface is ensured to protect the personal safety and the equipment safety.
The movable contact and the movable contact copper bar are installed in a copper piece welding mode, the observation window is arranged in the I-shaped groove of the plug contact to be fixed before welding installation, the movable contact is a driving piece observation window and is a driven piece, the observation window is provided with 'split' and 'close' indication, and when the movable contact moves to the observation range of the observation window, the position of the movable contact can be observed in real time from the position of the observation window.
The static contact is designed to be round, a circle of tooth-shaped indent is arranged in the static contact to limit the moving contact in a transition fit manner, and when the moving contact is inserted into the static contact, the tooth-shaped indent is pushed up to open the tooth-shaped indent to be inserted into the static contact, so that the moving contact movement flexibility can be guaranteed, the tooth-shaped indent is limited to play a fastening role, the contact reliability of the moving contact is guaranteed, and the contact temperature rise caused by poor contact of the moving contact is prevented, so that the design performance of the device is influenced.
Technical innovation point
(1) The double-power switch power supply electricity-taking device is a novel connection solution of a mobile power generation vehicle and a low-voltage distribution equipment busbar, and consists of a dynamic contact and static contact assembly, wherein a static contact device is preassembled on the distribution equipment busbar, the static contact consists of a shell protection cover and a static contact copper piece, the static contact copper piece is bent into a U-shaped outer ring and fixed by a spring, the dynamic contact and the static contact are tightly clamped by the expansion and contraction of the spring piece, so that the dynamic contact and the static contact cannot be separated due to electric repulsive force, and the current-carrying capacity is ensured; (2) In order to meet the design requirements of various low-voltage distribution equipment busbar, the preassembled fixed contact device is designed to be applicable to the distribution equipment busbar with various specifications, the device is provided with a fastening device, the device is not required to be perforated again for installation, the fixed contact is directly installed on the busbar by utilizing the preassembled holes of the distribution equipment busbar, the transformation difficulty of the low-voltage distribution cabinet is reduced, and the reliable electric gap between the equipment is ensured; the moving contact is a round copper bar with phi 18, the direction can be freely adjusted without positioning when the moving contact is inserted, the moving contact adopts a copper piece silver plating process, the total load flow is 400A-800A, and the temperature rise of the contact part of the conductive piece of the device is ensured not to exceed 60K; (3) After being connected with the power distribution equipment busbar, the power distribution equipment busbar is positioned and locked by the J-shaped buckle, so that the power distribution equipment busbar is effectively prevented from falling off, and the power distribution equipment busbar has the characteristics of safety, convenience, rapidness and reliability; (4) When the maintenance is planned, the utility power can be disconnected after the power generation vehicle is connected with the utility power in advance, and uninterrupted operation can be achieved.
Direct and indirect benefits after achievement popularization:
the uninterrupted power distribution operation is a reliable power supply technical means and has direct and important effect on reducing social power failure. Meanwhile, for power supply enterprises, various power stopping and transmitting operations are avoided and reduced, the working environment is improved, personal safety and equipment safety are objectively improved, and further the technical level, the service level and the enterprise image of the power supply enterprises are improved. The power distribution uninterrupted operation has the following effects:
1) Is currently the most direct and effective measure for improving the power supply reliability. According to domestic statistical analysis of power supply reliability for years, more than 70% of power failure reasons of users are power failure prearranged for power distribution, namely network transformation, business expansion power connection, scheduled maintenance and the like. At present, china is still in the rapid development stage of industrialization and town construction, network transformation and industry expansion power connection engineering account for a large proportion, so that two different operation modes of uninterrupted power failure and power failure can generate distinct results, uninterrupted power supply to users can be ensured by adopting uninterrupted power failure operation, and the method is the most effective measure for improving the reliability of power distribution and power supply.
2) Has good economic and social benefits. The power failure not only causes direct loss of the power supply enterprises and the power plants due to the reduction of the power supply quantity, but also reduces the business income of the power generation enterprises and prolongs the power investment recovery period; meanwhile, the power failure directly affects the production and life of users, causes the power failure loss of users and even affects the social stability.
3) The labor efficiency is greatly improved, and meanwhile, the safety of operation is also improved to a certain extent. In addition to field construction and installation, conventional power outage operation is performed, before operation, power lines or equipment in an operation range are subjected to switching operation, grounding wires are installed after power outage and electricity inspection, field safety measures are arranged, all the grounding wires are removed after operation is finished, power transmission is restored through switching operation, the technical measures for ensuring safety are essential, and the personal safety of operators and operators can be ensured only by following the correct operation sequence. For a simple radiation type power distribution network, the time for arranging safety measures before operation, removing the safety measures after operation and stopping power transmission is usually more than 1h, and if the power distribution network is a power distribution network with complex wiring such as multi-section, multi-connection and the like, the circuit equipment and sites are more and scattered, and the time and the labor are consumed for 2-3 h. Meanwhile, when switching operation and on-site safety measures are set, if misoperation occurs due to failure in work or negligence, safety production accidents and even personal injury can be caused.
The double-power-supply switching power supply power taking device has the advantages that the switching operation of power interruption and power transmission is not needed, the site safety measure arrangement place is fixed, the operation is simple, the connection is completed for less than 5 minutes, the power supply is carried out, the workload and the time are reduced, and the labor efficiency is improved.
4) And the improvement of the overhaul mode is promoted, and the safety of the power grid is better ensured. The maintenance mode of the power grid equipment is not limited to the traditional power failure mode, and the line or equipment to be maintained can be maintained in time by adopting live maintenance, bypass replacement operation and the like without waiting for a power failure plan, so that the defects and hidden danger of the line or equipment are eliminated in time, the operation time of the power facility with the power failure is shortened, and the safe operation of the power grid equipment is effectively ensured.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the stationary contact assembly of FIG. 1;
FIG. 3 is a schematic view of the moving contact assembly of FIG. 1;
FIG. 4 is a schematic view of another embodiment of the present invention;
FIG. 5 is a schematic view of the stationary contact assembly of FIG. 4;
fig. 6 is a schematic structural view of the movable contact assembly of fig. 4.
Detailed Description
The technical scheme of the invention is further specifically described below through examples and with reference to the accompanying drawings.
Example 1: as shown in the figure, the power taking device of the dual-power switch power supply comprises a fixed contact assembly and a movable contact assembly, wherein the movable contact assembly is inserted into the fixed contact assembly;
the static contact assembly comprises a static contact copper bar 1 and a static contact insulating housing 2, wherein a static contact 3 extending upwards is arranged in the static contact copper bar 1, a static contact insulating housing 2 fixed with the static contact copper bar 1 is sleeved outside the static contact 3, and a guide sleeve 4 communicated with the static contact 3 is arranged in the static contact insulating housing 2;
the movable contact assembly comprises a movable contact 5 and a movable contact copper bar 6, a movable contact insulating housing 7 is sleeved outside the movable contact 5, a push rod 8 for driving the movable contact 5 to move horizontally is arranged in the movable contact insulating housing 7, the movable contact copper bar 6 fixed with the movable contact 5 is arranged in the movable contact insulating housing 7, the push rod 8 drives the movable contact 5 to rotate, and the movable contact 5 stretches into the guide sleeve 4 along the movable contact insulating housing 7 and is fixed with the fixed contact 3.
The inner ring of the fixed contact 3 is provided with a tooth-shaped concave limiting end 9 in transition fit with the movable contact 5, an arc-shaped guide groove 10 is arranged outside the guide sleeve 4, the guide sleeve 4 extends upwards to extend out of the surface of the fixed contact insulating housing 2, and a limiting assembly is arranged in the fixed contact insulating housing 2;
the limiting component comprises J-shaped barbs 11, at least two symmetrical end faces of the static contact insulating housing 2 are respectively provided with the J-shaped barbs 11, the static contact insulating housing 2 is internally provided with card inlets 12 communicated with the arc-shaped guide grooves 10, the number of the card inlets 12 is equal to that of the J-shaped barbs 11, the card inlets 12 and the J-shaped barbs 11 are symmetrically distributed, and the arc-shaped guide grooves 10, the card inlets 12 and the J-shaped barbs 11 are distributed in a communicating mode.
The movable contact insulating housing 7 insert into the arc-shaped guide slot 10 along the guide sleeve 4, the shell of the movable contact insulating housing 7 be provided with a locating piece 13, the locating piece 13 be the joint location with "J" font barb 11 through the card entry 12, the movable contact insulating housing 7 in be provided with rectangular channel 14, the movable contact copper bar 6 carry out spacing motion from top to bottom along rectangular channel 14 and stretch into rectangular channel 14 and fixed with the movable contact 5, the top inner circle of the movable contact insulating housing 7 be equipped with spacing boss 15, ejector pin 8 carry out the free rotation along the movable contact insulating housing 7 through spacing boss 15.
The copper screw 16 which is clamped and fixed with the fixed contact copper bar 1 is arranged in the fixed contact copper bar 1, the surface of the copper screw 16 and the surface of the fixed contact copper bar 1 are distributed in the same horizontal plane, and the copper screw 16 and the fixed contact 3 are fixed through bolts;
the upper end and the lower end of the movable contact insulating housing 7 are respectively provided with a window mounting groove 17 communicated with the inside of the movable contact insulating housing 7, a transparent observation window 18 is arranged in the window mounting groove 17, and the movable contact 5 is provided with a closing and opening indication board 19;
the end face of the static contact insulating housing 2 is provided with a heat dissipation hole 20.
The upper end of ejector rod 8 be equipped with and be the "concave" shape draw-in groove 21 of joint formula connection with spacing boss 15, the lower extreme of ejector rod 8 be the screw thread metalwork that is threaded connection with moving contact 5, the surface of screw thread metalwork be insulating metal working of plastics, the head of ejector rod 8 be equipped with hexagonal groove 22, the surface of ejector rod 8 head be equipped with and close and divide the direction of rotation instruction.
The movable contact insulating housing 7 comprises a left movable contact insulating housing 23 and a right movable contact insulating housing 24, the left movable contact insulating housing 23 and the right movable contact insulating housing 24 are distributed in a spliced mode, the rectangular groove 14 is positioned in the left movable contact insulating housing 23 or the right movable contact insulating housing 24, and the positioning pieces 13 are respectively arranged in the left movable contact insulating housing 23 and the right movable contact insulating housing 24, and the pair of positioning pieces 13 are symmetrically distributed.
The left moving contact insulating housing 23 and the right moving contact insulating housing 24 are fastened through a pair of hoops 25 which are distributed at intervals, a clamping groove 26 is formed in the moving contact insulating housing 7, the hoops 25 are embedded into the clamping groove 26, and the hoops 25 are spring pieces.
The left moving contact insulating housing 23 and the right moving contact insulating housing 24 are positioned by a plurality of pairs of bolts, and the observation window 18 is embedded into the splicing position of the left moving contact insulating housing 23 and the right moving contact insulating housing 24.
The operation method of the power taking device of the dual-power switch power supply is carried out according to the following operation steps:
the copper bar of the moving contact is inserted into a rectangular groove at the bottom of the insulating housing of the moving contact, and the ejector rod is screwed into a threaded hole of the moving contact; the concave clamping groove of the ejector rod is clamped on the limit boss of the insulating housing of the movable contact, so that the ejector rod can rotate freely but cannot do horizontal movement; the movable contact is driven to horizontally move when the ejector rod rotates, so that the aim of screwing the movable contact to indirectly push the movable contact to freely stretch out and draw back is fulfilled, the copper bar of the movable contact is inserted into the rectangular groove at the bottom of the insulating housing of the movable contact to play a limiting role, the movement of the copper bar in the rectangular groove is limited, and the reliability of the movement of the contact is ensured;
the movable contact is a driving part observation window, and the movable contact is a driven part observation window, and is provided with an 'opening and closing' indication, so that when the movable contact moves to the observation range of the observation window, the position of the movable contact can be observed in real time from the position of the observation window;
the movable contact insulating housing is provided with a 30-degree round hole for installing the positioning piece, when the movable contact is installed, the movable contact is firstly adjusted to be horizontally inclined by 30 degrees and is inserted into the J-shaped barb of the fixed contact insulating housing along the guide slot of the fixed contact insulating housing, and the movable ejector rod is screwed to push the movable contact to be inserted into the fixed contact along the guide slot of the fixed contact insulating housing; because the static contact insulating housing adopts a J-shaped barb design, the loose dislocation of the moving contact can be effectively prevented when the ejector rod is screwed;
the static contact is designed into a round shape, a circle of tooth-shaped concave limit is arranged in the static contact and is in transition fit with the moving contact, and when the moving contact is inserted into the static contact, the tooth-shaped limit is jacked up and can be inserted into the static contact.
Claims (7)
1. The utility model provides a dual power switching power supply gets electric installation which characterized in that: the movable contact assembly is inserted into the fixed contact assembly;
the static contact assembly comprises a static contact copper bar (1) and a static contact insulating housing (2), wherein a static contact (3) extending upwards is arranged in the static contact copper bar (1), the static contact insulating housing (2) fixed with the static contact copper bar (1) is sleeved outside the static contact (3), and a guide sleeve (4) communicated with the static contact (3) is arranged in the static contact insulating housing (2);
the movable contact assembly comprises a movable contact (5) and a movable contact copper bar (6), a movable contact insulation housing (7) is sleeved outside the movable contact (5), a push rod (8) for driving the movable contact (5) to move horizontally is arranged in the movable contact insulation housing (7), the movable contact copper bar (6) fixed with the movable contact (5) is arranged in the movable contact insulation housing (7), the push rod (8) drives the movable contact (5) to rotate, and the movable contact (5) stretches into the guide sleeve (4) along the movable contact insulation housing (7) and is fixed with the fixed contact (3);
the inner ring of the fixed contact (3) is provided with a tooth-shaped concave limiting end (9) in transition fit with the moving contact (5), an arc-shaped guide groove (10) is arranged outside the guide sleeve (4), the guide sleeve (4) extends upwards out of the surface of the fixed contact insulating housing (2), and a limiting component is arranged in the fixed contact insulating housing (2);
the limiting component comprises J-shaped barbs (11), at least two symmetrical end faces of the static contact insulating housing (2) are respectively provided with the J-shaped barbs (11), the static contact insulating housing (2) is internally provided with card inlets (12) communicated with the arc-shaped guide grooves (10), the number of the card inlets (12) is equal to that of the J-shaped barbs (11), the card inlets (12) and the J-shaped barbs (11) are symmetrically distributed, and the arc-shaped guide grooves (10), the card inlets (12) and the J-shaped barbs (11) are communicated;
the movable contact insulation housing (7) insert into arc guide slot (10) along guide pin bushing (4), the shell of movable contact insulation housing (7) be equipped with setting element (13), setting element (13) be joint location through card entry (12) and "J" font barb (11), movable contact insulation housing (7) in be equipped with rectangular channel (14), movable contact copper bar (6) carry out spacing motion about rectangular channel (14) and stretch into rectangular channel (14) and movable contact (5) fixed, the top inner circle of movable contact insulation housing (7) be equipped with spacing boss (15), ejector pin (8) carry out free rotation along movable contact insulation housing (7) through spacing boss (15).
2. The dual power switching power supply power taking device according to claim 1, wherein: copper screws (16) which are clamped and fixed with the fixed contact copper bar (1) are arranged in the fixed contact copper bar (1), the surfaces of the copper screws (16) and the surface of the fixed contact copper bar (1) are distributed in the same horizontal plane, and the copper screws (16) and the fixed contact (3) are fixed through bolts;
the upper end and the lower end of the movable contact insulating housing (7) are respectively provided with a window mounting groove (17) communicated with the inside of the movable contact insulating housing (7), a transparent observation window (18) is arranged in the window mounting groove (17), and the movable contact (5) is provided with a closing and opening indication board (19);
the end face of the static contact insulating housing (2) is provided with a heat dissipation hole (20).
3. The dual power switching power supply power taking device according to claim 1, wherein: the upper end of ejector rod (8) be equipped with and be "concave" shape draw-in groove (21) of being the connection of joining in marriage with spacing boss (15), the lower extreme of ejector rod (8) be the screw thread metalwork that is threaded connection with moving contact (5), the surface of screw thread metalwork be insulating metalwork, the head of ejector rod (8) be equipped with hexagonal groove (22), the surface of ejector rod (8) head be equipped with and close and divide the rotation direction instruction.
4. The dual power switching power supply power taking device according to claim 2, wherein: the movable contact insulating housing (7) comprises a left movable contact insulating housing (23) and a right movable contact insulating housing (24), the left movable contact insulating housing (23) and the right movable contact insulating housing (24) are in spliced distribution, the rectangular groove (14) is positioned in the left movable contact insulating housing (23) or the right movable contact insulating housing (24), the positioning pieces (13) are respectively arranged in the left movable contact insulating housing (23) and the right movable contact insulating housing (24), and the pair of positioning pieces (13) are in symmetrical distribution.
5. The dual power switching power supply power take-off device according to claim 4, wherein: the left moving contact insulating housing (23) and the right moving contact insulating housing (24) are fastened through a pair of hoops (25) which are distributed at intervals, a clamping groove (26) is formed in the moving contact insulating housing (7), the hoops (25) are embedded into the clamping groove (26), and the hoops (25) are spring pieces.
6. The dual power switching power supply power take-off device according to claim 4, wherein: the left moving contact insulating housing (23) and the right moving contact insulating housing (24) are positioned through a plurality of pairs of bolts, and the observation window (18) is embedded into the splicing position of the left moving contact insulating housing (23) and the right moving contact insulating housing (24).
7. The operating method of the power taking device of the dual-power switching power supply as claimed in claim 5, wherein the operating steps are as follows:
the copper bar of the moving contact is inserted into a rectangular groove at the bottom of the insulating housing of the moving contact, and the ejector rod is screwed into a threaded hole of the moving contact; the concave clamping groove of the ejector rod is clamped on the limit boss of the insulating housing of the movable contact, so that the ejector rod can rotate freely but cannot do horizontal movement; the movable contact is driven to horizontally move when the ejector rod rotates, so that the aim of screwing the movable contact to indirectly push the movable contact to freely stretch out and draw back is fulfilled, the copper bar of the movable contact is inserted into the rectangular groove at the bottom of the insulating housing of the movable contact to play a limiting role, the movement of the copper bar in the rectangular groove is limited, and the reliability of the movement of the contact is ensured;
the movable contact is a driving part observation window, and the movable contact is a driven part observation window, and is provided with an 'opening and closing' indication, so that when the movable contact moves to the observation range of the observation window, the position of the movable contact can be observed in real time from the position of the observation window;
the movable contact insulating housing is provided with a 30-degree round hole for installing the positioning piece, when the movable contact is installed, the movable contact is firstly adjusted to be horizontally inclined by 30 degrees and is inserted into the J-shaped barb of the fixed contact insulating housing along the guide slot of the fixed contact insulating housing, and the movable ejector rod is screwed to push the movable contact to be inserted into the fixed contact along the guide slot of the fixed contact insulating housing; because the static contact insulating housing adopts a J-shaped barb design, the loose dislocation of the moving contact can be effectively prevented when the ejector rod is screwed;
the static contact is designed into a round shape, a circle of tooth-shaped concave limit is arranged in the static contact and is in transition fit with the moving contact, and when the moving contact is inserted into the static contact, the tooth-shaped limit is jacked up and can be inserted into the static contact.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910666338.3A CN110459412B (en) | 2019-07-23 | 2019-07-23 | Dual-power switching power supply electricity taking device and operation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910666338.3A CN110459412B (en) | 2019-07-23 | 2019-07-23 | Dual-power switching power supply electricity taking device and operation method thereof |
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| CN110459412A CN110459412A (en) | 2019-11-15 |
| CN110459412B true CN110459412B (en) | 2024-03-19 |
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| CN110459412A (en) | 2019-11-15 |
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Address after: No. 4518, Xiaoqing Avenue, Hongshan Farm, Xiaoshan District, Hangzhou City, Zhejiang Province, 311234 Applicant after: HANGZHOU ZHIJIANG SWITCHGEAR STOCK Co.,Ltd. Address before: 311201 No. 243 Hongshan Avenue, Xiaoshan District, Hangzhou City, Zhejiang Province Applicant before: HANGZHOU ZHIJIANG SWITCHGEAR STOCK Co.,Ltd. |
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