CN115985711A - High-voltage explosion-proof switch - Google Patents
High-voltage explosion-proof switch Download PDFInfo
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- CN115985711A CN115985711A CN202310263590.6A CN202310263590A CN115985711A CN 115985711 A CN115985711 A CN 115985711A CN 202310263590 A CN202310263590 A CN 202310263590A CN 115985711 A CN115985711 A CN 115985711A
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Abstract
The invention discloses a high-voltage explosion-proof switch, which comprises an explosion-proof shell and a switch unit arranged in the explosion-proof shell, wherein the explosion-proof shell comprises a shell and a door cover arranged on the shell; the mechanical linkage mechanism is arranged between the operating mechanism and the mechanical locking mechanism, and the mechanical locking mechanism switches between a door locking state and a door opening state to correspondingly drive the operating mechanism to move between a closing position and an opening position. According to the high-voltage explosion-proof switch provided by the invention, the mechanical locking mechanism and the operating mechanism are mutually linked through the mechanical linkage mechanism, the operating mechanism is in a switch-on state when the door cover is opened, other power switches on the explosion-proof switch cannot be switched on, and the whole explosion-proof switch and the power supply side are in a power-off state, so that the safety of operators is ensured.
Description
Technical Field
The invention relates to the technical field of electric switches, in particular to a high-voltage explosion-proof switch.
Background
The high-voltage explosion-proof switch is suitable for the environment containing explosive gases in coal mine underground and other surrounding media, is used as a main switch and a branch switch of a power supply system or a feed switch for a mining explosion-proof mobile substation in a circuit with the voltage of 50hz and 1140v, can also be used as a high-capacity motor for infrequent starting, has the functions of overload, short circuit, undervoltage, leakage protection and the like, has bad working environment of power equipment under a mine, needs to open a box door of a switch box for maintenance when the explosion-proof switch fails or reaches a specified maintenance period, and provides the requirements of the coal mine underground power supply system and general safety technical requirements for equipment for ensuring safe operation: "the cap can not be opened when the power is switched on, and the power can not be switched on after the cap is opened". In addition, article 2011, article 445, rules for coal mine safety: the electrical equipment can not be overhauled and moved under the well in a live way. 82303060, the locking device of all switches must be able to reliably prevent unauthorized power transmission and unauthorized opening operation, the handle of the switch must be locked when the power supply is cut off, and a warning board in the character of ' someone working and not transmitting power ' is hung, and only a person who performs the working has the right to take off the board and transmit power '.
At present, all explosion-proof control switches are provided with a connecting mechanism which can operate an isolating switch in an explosion-proof shell by an isolating switch operating handle outside the explosion-proof shell, the switch has no fault conditions such as electric leakage, short circuit and the like, the isolating switch operating handle controls the explosion-proof control switch to be capable of being powered on, the power supply side of the explosion-proof control switch is powered on, so that the explosion-proof control switch is in a running state, when the explosion-proof switch fails or reaches a specified maintenance period, the isolating switch operating handle controls the explosion-proof control switch to be disconnected, and then the explosion-proof shell cover is opened for maintenance, if the publication number is CN103378548A, the name is 'one kind of mine explosion-proof switch', the publication number is invention patent application of 10, 30 and 10 months in 2013, and the invention patent application comprises a box body, a wiring cavity and a main cavity, and a control transformer, the isolating switch, a far and near control switch, a vacuum contactor, an electronic protector and a current transformer are arranged in the main cavity; one side of the box body is provided with a handle, a stop button and a start button, and the handle is used for breaking and closing the isolating switch or reversing; also for example, the invention patent application with publication number CN107887207A, named as "an explosion-proof switch locking device", published as 2018, 4 and 6 is composed of a bottom plate, a guide rail frame, a sliding sleeve, a sliding plate, a vertical rod, a U-shaped sheath and a warning board. The guide rail frame is fixedly connected with the bottom plate into a whole, the guide rail is provided with positioning teeth, the sliding sleeve is sleeved on the guide rail and is in sliding fit with the guide rail, the sliding plate is provided with a locking block on one side surface facing the bottom plate, two support lugs are arranged above the locking block, the upper end of the tooth piece is sleeved in the shaft and is in rotating fit with the shaft, the middle section of the tooth piece is in clamping fit with the locking block, the sliding plate is provided with a vertical rod above, the top of the vertical rod is provided with a U-shaped sheath, one end of the sheath is provided with a vertical pipe, the cross section of the vertical pipe is a square pipe, and the vertical pipe is spliced with a warning board. The U-shaped sheath slides on the guide rail to follow the handle of the explosion-proof switch, so that the sheath always surrounds the handle of the explosion-proof switch, no space is reserved for operating the handle, and the aim of preventing random misoperation is fulfilled.
According to the operating requirement of high-voltage explosion-proof switch, explosion-proof shell cover can not be opened when the feed power supply switches on, the power can not be put through after explosion-proof shell cover is opened, however current high-voltage explosion-proof switch carries out outage and power transmission operation through the operation hand (hold), the door of explosion-proof shell body passes through the lock and realizes locking and unblock, so opening of explosion-proof door and the outage of high-voltage explosion-proof switch are two operations, thereby make the electrician in the pit maloperation or the operation violating the regulations appear, lead to electrified mining explosion-proof switch power supply of opening, so great safety risk has, prior art relies on special person's supervision and on-the-spot notice board to solve this problem, still exist not enoughly.
Disclosure of Invention
The invention aims to provide a high-voltage explosion-proof switch to solve the defects in the prior art.
In order to achieve the above purpose, the invention provides the following technical scheme:
the utility model provides a high-pressure explosion-proof switch, includes the flame proof housing and installs switch element in the flame proof housing, the flame proof housing includes the casing and sets up door closure on the casing, be provided with control in the inside main cavity of casing the operating device of switch element combined floodgate or separating brake still includes:
the mechanical locking mechanism is arranged on the shell, and a door locking state and a door opening state are formed between the mechanical locking mechanism and the door cover;
and the mechanical linkage mechanism is arranged between the operating mechanism and the mechanical locking mechanism, and the mechanical locking mechanism switches between the door locking state and the door opening state to correspondingly drive the operating mechanism to move between a closing position and an opening position.
In the high-voltage explosion-proof switch, the mechanical locking mechanism comprises a locking piece arranged in the shell and a driving piece driving the locking piece to move, and a locking structure corresponding to the locking piece is arranged on the door cover.
The driving piece comprises a rotating cam and a driving rod capable of driving the rotating cam to move.
In the high-voltage explosion-proof switch, the driving rod extends out of the shell and is provided with the operating end, and the operating end is detachably connected with the operating rod.
In the above high-pressure explosion-proof switch, the locking member includes an elastic restoring member and a sliding plate slidably disposed on the inner wall of the housing, the elastic restoring member and the rotating cam are disposed on opposite sides of the sliding plate, the sliding plate is provided with a locking pin, and the locking structure includes a locking hole corresponding to the locking pin.
The switch unit comprises a high-voltage grounding switch, the high-voltage grounding switch comprises a knife switch body and a knife holder, and the knife switch body comprises a mounting seat and a knife switch arranged on the mounting seat.
In the high-voltage explosion-proof switch, the operating mechanism comprises the cylindrical rotating seat, the mounting seat is fixedly arranged on the cylindrical rotating seat, and the cylindrical rotating seat can receive the drive of the mechanical linkage mechanism to move between the switching-on position and the switching-off position.
In the high-voltage explosion-proof switch, the mechanical linkage mechanism comprises the rotor, and the rotor is connected with the mechanical locking mechanism through the connecting piece.
The high-voltage explosion-proof switch further comprises a locking mechanism which is arranged corresponding to the operating mechanism, the locking mechanism is driven by the mechanical linkage mechanism to have a locking state and an unlocking state, and when the operating mechanism is in a closing state, the locking mechanism is in the locking state to lock the cylindrical rotating seat or the mounting seat.
The locking mechanism comprises a moving assembly, the moving assembly is in transmission connection with the mechanical linkage mechanism through a transmission assembly, a locking piece is arranged on the moving assembly, and a locking structure corresponding to the locking piece is arranged on the cylindrical rotating seat or the mounting seat.
In the technical scheme, the invention provides a high-voltage explosion-proof switch which comprises an explosion-proof shell and a switch unit arranged in the explosion-proof shell, wherein the explosion-proof shell comprises a shell and a door cover arranged on the shell, an operating mechanism for controlling the switch unit to be switched on or switched off is arranged in a main cavity in the shell, a mechanical locking mechanism corresponding to the door cover is arranged on the shell, a mechanical linkage mechanism is arranged between the mechanical locking mechanism and the operating mechanism, the mechanical locking mechanism and the operating mechanism are mutually linked through the mechanical linkage mechanism, the operating mechanism is in a switch-on state when the door cover is opened in an operation process, other power switches on the explosion-proof switch cannot be switched on, the whole explosion-proof switch and a power supply side are in a power-off state, the operating mechanism is in a switch-off state when the door cover is closed in a door-locking state, and then the power switch can be operated and switched on, so that the safety of an operator in the process of removing faults and overhauling is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
Fig. 1 is a schematic structural diagram of a high-voltage explosion-proof switch according to still another embodiment of the invention;
FIG. 2 is a schematic structural diagram of an operating mechanism in a brake-off position according to yet another embodiment of the present invention;
FIG. 3 is a schematic diagram of an operating mechanism in a closing position according to yet another embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a locking mechanism according to yet another embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a mechanical linkage mechanism according to yet another embodiment of the present invention;
FIG. 6 is a second schematic structural diagram of a mechanical linkage mechanism according to yet another embodiment of the present invention;
FIG. 7 is a schematic illustration of an installation of a mechanical linkage according to yet another embodiment of the present invention;
FIG. 8 is a schematic structural view of a mechanical locking mechanism according to an embodiment of the present invention;
fig. 9 is a second schematic structural view of a mechanical locking mechanism provided in the embodiment of the present invention;
fig. 10 is a schematic structural view of a blade body according to another embodiment of the present invention;
FIG. 11 is a schematic view of a tool holder according to another embodiment of the present invention;
fig. 12 is a schematic structural diagram of a motion assembly according to still another embodiment of the present invention.
Description of reference numerals:
1. an explosion-proof shell; 1.1, a shell; 1.2, a door cover; 2. an operating mechanism; 2.1, a knife switch body; 2.2, locking structure; 2.3, a tool apron; 2.4, a motion cavity; 2.5, moving through holes; 2.6, a high-voltage grounding switch; 2.7, mounting seats; 3. a mechanical locking mechanism; 3.1, locking piece; 3.2, a driving piece; 3.3, rotating the cam; 3.4, driving the rod; 3.5, an operation end; 3.6, a sliding plate; 3.7, elastic restoring piece; 3.8, locking pins; 3.9, a locking structure; 4. a mechanical linkage mechanism; 4.1, a rotor; 4.2, a cylindrical rotary seat; 4.3, a torsion spring; 5. a locking mechanism; 5.1, a motion component; 5.2, a sports board; 5.3, locking rod; 5.4, fixing the connecting rod; 5.5, a sliding block; 6. a transmission assembly; 6.1, a transmission gear; 6.2, a rack; 6.3, fixing the base; 6.4, strip-shaped grooves; 6.5, a motion column; 7. and fixing the bottom plate.
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 12, the high-voltage explosion-proof switch provided by the embodiment of the invention includes an explosion-proof housing 1 and a switch unit installed in the explosion-proof housing 1, the explosion-proof housing 1 includes a housing 1.1 and a door cover 1.2 disposed on the housing 1.1, an operating mechanism 2 for controlling the switch unit to switch on or off is disposed in a main cavity inside the housing 1.1, a mechanical locking mechanism 3 is disposed on the housing 1.1, a door locking state and a door opening state are provided between the mechanical locking mechanism 3 and the door cover 1.2, a mechanical linkage mechanism 4 is disposed between the operating mechanism 2 and the mechanical locking mechanism 3, and the mechanical locking mechanism 3 is switched between the door locking state and the door opening state to drive the operating mechanism 2 to move between a switch-on position and a switch-off position.
Concretely, flameproof housing 1 includes rectangular casing 1.1, main cavity and wiring chamber that is provided with the flame-proof type structure in casing 1.1's inside, switch element and other electrical components all adorn in the main cavity, operating device 2 sets up the lateral part at the main cavity, be provided with the switch element corresponding with operating device 2 on switch element, switch element and operating device 2 form the switch structure that cuts off the power supply and circular telegram to high-pressure explosion-proof switch jointly, this switch structure can be high-voltage earthing switch 2.6, also can be the switch structure of other structures, like isolator etc., use switch structure to describe for high-voltage earthing switch 2.6 in this embodiment, high-voltage earthing switch 2.6 plays two effects when using: firstly, prevent that maloperation power transmission and sudden incoming telegram from arousing the electric shock accident, secondly can put the residual charge to the greatest extent, be favorable to overhauing safety, thereby guarantee the safety of equipment and person, operating device 2 is used for operating high-pressure earthing switch 2.6, make high-pressure earthing switch 2.6 switch over between combined floodgate state and separating brake state, when operating device 2 drive high-pressure earthing switch 2.6 is in the separating brake state, can carry out combined floodgate operation to remaining switch this moment, thereby make explosion-proof control switch's power side get electric, when operating device 2 drive high-pressure earthing switch 2.6 is in the separating brake state, other switches on the explosion-proof switch can't be combined floodgate, whole explosion-proof switch and power side all are in the outage state, thereby ensure operating personnel in the safety of getting rid of combined floodgate trouble and maintenance in-process.
In this embodiment, an opening through which an operator operates the switch unit, the electrical components, the switch structure, and the like in the main cavity and the wiring cavity is provided on the housing 1.1, the door cover 1.2 is mounted on the opening, the opening can be opened or closed by the door cover 1.2, the door cover 1.2 is rotatably connected to the housing 1.1, so that the opening can be opened or closed by rotating the door cover 1.2, the door cover 1.2 is also slidably connected to the housing 1.1, so that the opening can be opened or closed by sliding the door cover 1.2 up and down, a mechanical locking mechanism 3 is provided on the housing 1.1, the mechanical locking mechanism 3 is provided corresponding to the door cover 1.2, when the door cover 1.2 is closed on the opening, the door cover 1.2 can be locked by the mechanical locking mechanism 3, so that the door cover 1.2 is in a door locking state, when the mechanical locking mechanism 3 is operated to unlock the door cover 1.2, the door cover 1.2 is in a door opening state, and at this time, the door opening can be operated to open the door cover 1.2.
In the embodiment, the mechanical linkage mechanism 4 is arranged between the operating mechanism 2 and the mechanical locking mechanism 3, the mechanical linkage mechanism 4 and the operating mechanism 2 form a structure which is in transmission connection in sequence, so that the opening position of the operating mechanism 2 corresponds to the door locking state of the mechanical locking mechanism 3, the closing position of the operating mechanism 2 corresponds to the door opening state of the mechanical locking mechanism 3, in the using process, when the mechanical locking mechanism 3 is in the door locking state, the operating mechanism 2 is in the opening position, the power supply side of the high-voltage explosion-proof switch is electrified, when the door cover 1.2 needs to be opened, an operator operates the mechanical locking mechanism 3 to enable the mechanical locking mechanism 3 to move to be gradually switched from the door locking state to the door opening state, the process is the door cover unlocking stroke, in the process, the operating mechanism 2 moves from the opening position to the closing position to enable the high-voltage explosion-proof switch to be in the power-off state, the electrical components and the switch unit in the shell 1.1 are not electrified, and then the door cover 1.2 can be opened for maintenance and detection operation, so that the phenomenon that an operator does not perform power-off operation on the high-voltage explosion-proof switch and directly opens the door cover 1.2 can be avoided, after the operation is finished, the operator operates the mechanical locking mechanism 3 to enable the mechanical locking mechanism 3 to move to be gradually switched from a door opening state to a door locking state, the process is a door cover locking stroke, in the process, the operating mechanism 2 moves from a closing position to an opening position, after the door cover 1.2 is determined to be locked, closing operation of other power switches is performed, and therefore the high-voltage explosion-proof switch works It can be different that the opening position and the closing position are only a simple position switch, and even a position name, such as a switch swing stroke having two positions, a closing position on the left side and a closing position on the right side, obviously, it can also be installed or selected that the opening position on the left side and the closing position on the right side correspond to each other, which essentially means that there is a positional correspondence between the operating mechanism 2 and the mechanical locking mechanism 3, but this correspondence is not unique but adjustable.
The embodiment of the invention provides a high-voltage explosion-proof switch, which comprises an explosion-proof shell 1 and a switch unit arranged in the explosion-proof shell 1, wherein the explosion-proof shell 1 comprises a shell 1.1 and a door cover 1.2 arranged on the shell 1.1, an operating mechanism 2 for controlling the switch unit to be switched on or switched off is arranged in a main cavity in the shell 1.1, a mechanical locking mechanism 3 corresponding to the door cover 1.2 is arranged on the shell 1.1, a mechanical linkage mechanism 4 is arranged between the mechanical locking mechanism 3 and the operating mechanism 2, the mechanical locking mechanism 3 and the operating mechanism 2 are mutually linked through the mechanical linkage mechanism 4, the fact that in the operation process, when the door cover 1.2 is opened and is in the door opening state, the operating mechanism 2 is in the switch-on state, other power switches on the explosion-proof switch cannot be switched on, the whole explosion-proof switch and the power side are in the power-off state, when the door cover 1.2 is closed and is in the door locking state, the operating mechanism 2 is in the switch-off state, and then the power switch can be switched on, and accordingly, safety of operators can be guaranteed in the overhaul process.
In the embodiment provided by the present invention, preferably, the mechanical locking mechanism 3 includes a locking member 3.1 disposed in the housing 1.1 and a driving member 3.2 for driving the locking member 3.1 to move, a locking structure 3.9 corresponding to the locking member 3.1 is disposed on the door cover 1.2, the locking structure 3.9 is fixedly disposed on an inner side wall of the door cover 1.2, when the mechanical locking mechanism 3 is in a door-locking state, the locking member 3.1 and the locking structure 3.9 are correspondingly locked to achieve locking between the door cover 1.2 and the housing 1.1, when the mechanical locking mechanism 3 is in a door-opening state, the locking member 3.1 and the locking structure 3.9 are separated, at this time, an opening on the housing 1.1 can be opened through the door cover 1.2, in an unlocking stroke of the door cover 1.2 and a locking stroke of the door cover 1.2, movement manners of the driving member 3.2 and the locking member 3.1 may be the same or different, for example, the driving member 3.2 and the locking member 3.1 may both rotate or move linearly, or may move in other manners.
In the embodiment provided by the invention, preferably, the driving member 3.2 includes a rotating cam 3.3 and a driving rod 3.4 capable of driving the rotating cam 3.3 to move, the driving rod 3.4 extends out of the housing 1.1 to the outside of the housing 1.1 and is provided with an operating end 3.5, and the operating rod is detachably connected to the operating end 3.5; the shell 1.1 is provided with a mounting hole, the driving rod 3.4 is rotatably arranged in the mounting hole, the operating end 3.5 is positioned at the outer side of the shell 1.1, the operating end 3.5 is provided with a connecting structure connected with the operating rod, the rotating cam 3.3 and the locking piece 3.1 are both positioned in the shell 1.1, when the door cover 1.2 needs to be opened, one end of the operating rod is connected with the operating end 3.5, the driving rod 3.4 is driven to rotate by the operating rod, the rotating cam 3.3 can correspondingly drive the locking piece 3.1 to move along with the rotation of the driving rod 3.4, the locking piece 3.1 is separated from the locking structure 3.9 so as to enable the mechanical locking piece 3 to be in an open-door state, then the opening on the shell 1.1 can be opened through the door cover 1.2, when the opening needs to be closed through the door cover 1.2, the door cover 1.2 is closed on the shell 1.1, the driving rod 3.4 is reversely driven to rotate through the operating rod, the rotating cam 3.3 correspondingly drives the locking piece 3.1 to move in opposite directions along with the reverse rotation of the driving rod 3.4, so that the locking piece 3.1 and the locking structure 3.9 are locked, the mechanical locking mechanism 3 is in a door locking state at the moment, meanwhile, a cover body capable of covering the operating end 3.5 in the shell 1.1 can be further arranged on the shell, so that when the mechanical locking mechanism 3 is in a locking state, the cover body can be covered on the mounting hole, the lock body can be further arranged on the cover body, the operating end 3.5 is not exposed, the protection of the operating rod is realized, the phenomenon that the operation of the operating rod is influenced by the clamping of dust, sundries and the like in the mounting hole is avoided, the operation of non-designated operators can be also avoided, and the safety guarantee is improved.
In the embodiment provided by the present invention, preferably, the locking member 3.1 is a structure capable of receiving the rotary cam 3.3 to drive and move correspondingly, in the door cover unlocking stroke and the door cover locking stroke, when the rotary cam 3.3 rotates along with the driving rod 3.4, the locking member 3.1 can synchronously rotate and also can linearly move, and a structure that the locking member 3.1 linearly moves is described as follows: the locking piece 3.1 comprises an elastic restoring piece 3.7 and a sliding plate 3.6 arranged on the inner wall of the shell 1.1 in a sliding mode, the elastic restoring piece 3.7 and the rotating cam 3.3 are arranged on two opposite sides of the sliding plate 3.6, the sliding plate 3.6 is correspondingly abutted against the rotating cam 3.3, the sliding plate 3.6 and the elastic restoring piece 3.7 form a cam mechanism, so that the sliding plate 3.6 moves linearly in the shell 1.1, meanwhile, a sliding block 5.5 is arranged at the bottom of the sliding plate 3.6, a sliding groove is arranged on the inner wall of the shell 1.1, the sliding block 5.5 is connected in the sliding groove in a sliding mode, and when the rotating cam 3.3.3 and the elastic restoring piece 3.7 respectively drive the sliding plate 3.6 in the unlocking stroke and the locking stroke of the door cover 1.2, the sliding block 5.5 moves along the sliding groove so that the sliding plate 3.6 reciprocates linearly.
In the embodiment of the present invention, preferably, the sliding plate 3.6 is provided with a locking pin 3.8, the locking structure 3.9 includes locking holes corresponding to the locking pins 3.8, the number of the locking pins 3.8 may be one, two or more, the inner wall of the housing 1.1 is fixedly provided with a fixed seat 6.3 corresponding to the locking pins 3.8, the fixed seat 6.3 is provided with through holes corresponding to the number of the locking pins 3.8, the locking pins 3.8 are movably connected in the through holes, the elastic restoring member 3.7 includes a spring member which is externally sleeved on the locking pins 3.8, one end of the spring member is fixed on the fixed seat 6.3, the other end of the spring member is fixed on the sliding plate 3.6, the locking structure 3.9 includes a locking seat fixedly provided in the housing 1.1, the locking holes corresponding to the locking pins 3.8 are provided on the locking seat, when the door locking mechanism 3 is in the door locking state, the locking holes and the locking holes are coaxial with the through holes, when the door cover 1.2 is closed on the housing 1.1.1 and the mechanical locking mechanism 3 is in the door locking state, when the door needs to be opened, the door is gradually pressed by the cam 3.3.8, the door is operated, the door is pressed by the locking mechanism, the door is operated to be separated from the door opening of the sliding plate 3.3.3.3.3.3, and the door, and the door is gradually, the door is rotated by the door.
In another embodiment provided by the present invention, preferably, the high voltage grounding switch 2.6 includes a switch blade body 2.1 and a switch blade holder 2.3, the switch blade body 2.1 includes a mounting seat 2.7 and a switch blade arranged on the mounting seat 2.7, a grounding connector corresponding to the switch blade is arranged on the switch blade holder 2.3, when the switch blade body 2.1 rotates to the switch-on position, the switch blade body 2.1 contacts with the grounding connector on the switch blade holder 2.3, and when the switch blade body 2.1 rotates to the switch-off position, the switch blade body 2.1 is separated from the grounding connector on the switch blade holder 2.3.
In another embodiment provided by the invention, preferably, the operating mechanism 2 includes a cylindrical rotating seat 4.2, a mounting groove is arranged on the cylindrical rotating seat 4.2, the mounting seat 2.7 is fixedly mounted in the mounting groove, the cylindrical rotating seat 4.2 is correspondingly in transmission connection with the mechanical linkage mechanism 4, in an unlocking stroke of the door cover 1.2 and a locking stroke of the door cover 1.2, the driving rod 3.4 rotates to correspondingly drive the cylindrical rotating seat 4.2 to rotate, the knife body 2.1 correspondingly rotates with the cylindrical rotating seat 4.2 to reciprocate between a switching-on position and a switching-off position, for convenience of description, a moving stroke of the cylindrical rotating seat 4.2 and the knife body 2.1 moving from the switching-off position to the switching-on position is referred to as a switching-on moving stroke, a moving stroke of the cylindrical rotating seat 4.2 and the knife body 2.1 moving from the switching-on position to the switching-off position is referred to as a switching-off moving stroke, and the switching-on moving stroke corresponds to the locking stroke of the door cover.
In another embodiment provided by the present invention, preferably, the mechanical linkage mechanism 4 includes a rotating body 4.1, a connector is disposed between the rotating body 4.1 and the mechanical locking mechanism 3, the connector realizes transmission connection between the rotating body 4.1 and the driving rod 3.4, the rotating body 4.1 can receive the drive of the mechanical locking mechanism 3 and the connector to rotate in the housing 1.1, the connector can be a connecting sleeve or a connecting ring that coaxially and fixedly connects the rotating body 4.1 and the driving rod 3.4, so as to fixedly connect the rotating body 4.1 and the driving rod 3.4 to form an integrated structure, the connector can also be other transmission structures, the cylindrical rotating seat 4.2 is sleeved on the rotating body 4.1, when the driving rod 3.4 is driven to rotate, the rotating body 4.1 and the cylindrical rotating seat 4.2 can be correspondingly driven to rotate through the connector, and the knife body 2.1 rotates synchronously with the cylindrical rotating seat 4.2, so as to make a closing movement stroke or an opening movement stroke.
In another embodiment provided by the present invention, preferably, during the door cover unlocking stroke, the mechanical locking mechanism 3 is initially in the door locking state and then in the door opening state, the door cover locking stroke is a movement stroke opposite to the door cover unlocking stroke, which includes an initial door open state and a subsequent door lock state, during a door cover unlocking stroke and a door cover locking stroke, the mechanical locking mechanism 3 is in the door-locked state for a much longer time than in the door-unlocked state, if the door cover unlocking stroke and 90% of the door cover locking stroke are both in the door locking state, only 10% of the stroke is in the door opening state, during the closing movement, the blade body 2.1 includes an initial opening state and a subsequent closing state, in the switching-off movement stroke, the switch blade body 2.1 comprises an initial switching-on state and a subsequent switching-off state, in the closing movement stroke and the opening movement stroke, the time of the knife switch body 2.1 in the opening state is longer than the time of the knife switch body in the closing state, if 80% of the closing movement stroke and the opening movement stroke are in the opening state, and only 20% of the strokes are in the closing state, therefore, in the unlocking stroke of the door cover, the knife switch body 2.1 firstly reaches the closing state, and then the mechanical locking mechanism 3 reaches the opening state, so that when the door cover 1.2 is opened, the explosion-proof switch is in the power-off state, in the locking stroke of the door cover, the mechanical locking mechanism 3 firstly reaches the door locking state, then the knife blade body 2.1 reaches the opening state, so that the door cover 1.2 is locked on the shell 1.1 when the explosion-proof switch starts to work, it should be noted that, the above data are only qualitatively described for ease of understanding, and are not specific data representing actual operation, as the open state is longer than the closed state.
In another embodiment of the present invention, preferably, in order to keep the knife body 2.1 at the closing position and avoid the misoperation, thereby improving the safety of the operation, a locking mechanism 5 corresponding to the operating mechanism 2 is further disposed inside the housing 1.1, the locking mechanism 5 is driven by the mechanical linkage mechanism 4 to have a locking state and an unlocking state, so that when the driving rod 3.4 is driven to rotate, the mechanical linkage mechanism 4 correspondingly drives the locking mechanism 5 to move, when the knife body 2.1 is in the opening state, the locking mechanism 5 is separated from the knife body 2.1 or the cylindrical rotating base 4.2, and when the knife body 2.1 rotates to the closing state, the locking mechanism 5 locks the knife body 2.1 or the cylindrical rotating base 4.2, thereby locking the knife body 2.1 at the closing state.
In still another embodiment provided by the present invention, preferably, the locking mechanism 5 includes a moving assembly 5.1 and a transmission assembly 6, the moving assembly 5.1 is used for locking or unlocking the mounting seat 2.7, the transmission assembly 6 is disposed between the mechanical linkage 4 and the moving assembly 5.1, that is, the transmission assembly 6 can correspondingly transmit the rotation of the rotating body 4.1 to the moving assembly 5.1, so that the moving assembly 5.1 can be switched between the locking state and the unlocking state, the moving assembly 5.1 includes a moving plate 5.2 and a locking member disposed on the moving plate 5.2, the locking member includes a locking rod 5.3 disposed on the moving plate 5.2, the cylindrical rotating seat 4.2 or the guillotine body 2.1 is provided with a locking structure 2.2 corresponding to the locking member, the guillotine seat 2.3 is provided with a moving cavity 2.4 for the moving plate 5.2 to move, the moving plate 5.2 is connected in the moving cavity 2.4 in a sliding manner, meanwhile, a sliding limiting groove is arranged on the moving cavity 2.4, a sliding limiting block is arranged on the moving plate 5.2, the sliding limiting block is limited in the sliding limiting groove in a sliding manner so as to limit the moving amplitude of the moving plate 5.2, a moving through hole 2.5 for the locking rod 5.3 to move is further arranged on the moving cavity 2.4, one end of the locking rod 5.3 penetrates out of the moving through hole 2.5, and the other end of the locking rod is fixedly connected with the moving plate 5.2, so that when the moving plate 5.2 is driven to reciprocate in the moving cavity 2.4, the locking rod 5.3 moves along the moving through hole 2.5, and when the cylindrical rotating seat 4.2 and the rotating body of the knife body 2.1 rotate along with the cylindrical rotating body 4.1 to a closing state, the locking rod 5.3 is correspondingly inserted into the locking structure 2.2 to lock the knife body 2.1.
In another embodiment of the present invention, preferably, in the last operation stroke of the closing movement stroke, the knife body 2.1 is in the closing state, and in order to improve the locking effect of the locking rod 5.3, the locking structure 2.2 is a kidney-shaped groove formed in the mounting seat 2.7, the depth of the kidney-shaped groove gradually changes, an inclined surface corresponding to the end of the locking rod 5.3 is formed inside the kidney-shaped groove, in the closing movement stroke, when the knife body 2.1 rotates to the closing state, the end of the locking rod 5.3 starts to be embedded into the kidney-shaped groove, at this time, the depth of the kidney-shaped groove corresponding to the locking rod 5.3 is smaller, as the knife body 2.1 continues to rotate, the depth of the kidney-shaped groove corresponding to the locking rod 5.3 gradually increases, and when the closing movement stroke ends, the end of the locking rod 5.3 corresponds to the position where the depth of the kidney-shaped groove is the largest, and thus the advantages are: during normal use, the tip of locking lever 5.3 is restricted in waist shape recess to make plug-in strip body 2.1 keep in the combined floodgate state, and at the initial stage of separating brake motion stroke, can take place the butt between inclined plane and the locking lever 5.3, thereby the last applied force of increase actuating lever 3.4 and rotor 4.1, thereby make the operator just can distinguish separating brake motion stroke and separating brake motion stroke according to the application of force size, promote the security of operation.
In still another embodiment of the present invention, it is preferable that the transmission assembly 6 includes a transmission gear 6.1 and a rack 6.2, the transmission gear 6.1 is fixedly disposed with the rotating body 4.1, the rack 6.2 is engaged with the transmission gear 6.1, a bar-shaped seat is disposed on a fixed base plate 7 inside the housing 1.1, a bar-shaped groove 6.4 is disposed on the bar-shaped seat, the rack 6.2 is slidably mounted in the bar-shaped groove 6.4, a connection structure is disposed at one end of the rack 6.2, the connection structure may be a moving post 6.5 fixedly connected or restrictively connected with the rack 6.2, a fixed connection rod 5.4 is disposed on the moving plate 5.2, and the fixed connection rod 5.4 is connected with the moving post 6.5, such that when the rotating body 4.1 is driven to rotate, the transmission gear 6.1 correspondingly drives the rack 6.2 to make a linear movement in the bar-shaped groove 6.4, the rack 6.2 movement corresponds to the driving moving post 6.5 and the fixed connection rod 5.4 movement, so that the moving plate 5.2 makes a reciprocating movement in the moving cavity 2.4 of the knife holder 2, thereby switching the locking state between the locking state and the locking state.
In a further embodiment of the present invention, it is preferable that the present invention further includes a torsion spring 4.3, the cylindrical rotating base 4.2 is connected to the rotating body 4.1 through the torsion spring 4.3, and two legs of the torsion spring 4.3 are respectively fixed to the cylindrical rotating base 4.2 and the rotating body 4.1, so that during the closing movement stroke, the cylindrical rotating base 4.2 and the rotating body 4.1 rotate synchronously, and during the starting stage of the opening movement stroke, since the locking rod 5.3 locks the switch blade body 2.1, when the driving rod 3.4 and the rotating body 4.1 are driven to rotate, the cylindrical rotating base 4.2 does not rotate, during this stage, the torsion spring 4.3 accumulates force, when the rotating body 4.1 rotates to make the locking rod 5.3 leave the kidney-shaped groove, the switch blade body 2.1 rotates under the action of the torsion spring 4.3, so that the switch blade body 2.1 can be rapidly switched from the closing state to the opening state, and simultaneously, since the torsion spring 4.3 needs the accumulation force at the starting stage of the opening movement stroke, the operator can apply a larger force to the opening and closing movement stroke, thereby avoiding the operator from a larger operation stroke.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (10)
1. The utility model provides a high-pressure explosion-proof switch, includes the flame proof housing and installs switch element in the flame proof housing, the flame proof housing includes the casing and sets up door closure on the casing, be provided with control in the inside main cavity of casing the operating device of switch element combined floodgate or separating brake, its characterized in that still includes:
the mechanical locking mechanism is arranged on the shell, and a door locking state and a door opening state are formed between the mechanical locking mechanism and the door cover;
and the mechanical linkage mechanism is arranged between the operating mechanism and the mechanical locking mechanism, and the mechanical locking mechanism switches between the door locking state and the door opening state to correspondingly drive the operating mechanism to move between a closing position and an opening position.
2. The high-voltage explosion-proof switch according to claim 1, wherein the mechanical locking mechanism comprises a locking member disposed in the housing and a driving member for driving the locking member to move, and the door cover is provided with a locking structure corresponding to the locking member.
3. The high-voltage explosion-proof switch according to claim 2, wherein the driving member comprises a rotary cam and a driving rod capable of driving the rotary cam to move.
4. The high-voltage explosion-proof switch according to claim 3, wherein the driving rod is provided with an operating end extending out from the housing, and an operating rod is detachably connected to the operating end.
5. The high pressure blast resistant switch according to claim 4, wherein said latch member comprises an elastic restoring member and a sliding plate slidably disposed on the inner wall of said housing, said elastic restoring member and said rotating cam being disposed on opposite sides of said sliding plate, said sliding plate being provided with a locking pin, said latch structure comprising a locking hole corresponding to said locking pin.
6. The high-voltage explosion-proof switch according to claim 1, wherein the switch unit comprises a high-voltage grounding switch, the high-voltage grounding switch comprises a blade body and a blade holder, and the blade body comprises a mounting seat and a blade arranged on the mounting seat.
7. The high-voltage explosion-proof switch according to claim 6, wherein the operating mechanism comprises a cylindrical rotating seat, the mounting seat is fixedly arranged on the cylindrical rotating seat, and the cylindrical rotating seat can receive the driving of the mechanical linkage mechanism to move between the switching-on position and the switching-off position.
8. The high-voltage explosion-proof switch according to claim 7, wherein the mechanical linkage mechanism comprises a rotor, and the rotor is connected with the mechanical locking mechanism through a connecting piece.
9. The high-voltage explosion-proof switch according to claim 8, further comprising a locking mechanism disposed corresponding to the operating mechanism, wherein the locking mechanism is driven by the mechanical linkage mechanism to have a locked state and an unlocked state, and when the operating mechanism is in a closed state, the locking mechanism is in the locked state to lock the cylindrical rotating base or the mounting base.
10. The high-voltage explosion-proof switch according to claim 9, wherein the locking mechanism comprises a moving component, the moving component is in transmission connection with the mechanical linkage mechanism through a transmission component, a locking member is arranged on the moving component, and a locking structure corresponding to the locking member is arranged on the cylindrical rotating seat or the mounting seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310263590.6A CN115985711B (en) | 2023-03-17 | 2023-03-17 | High-voltage explosion-proof switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310263590.6A CN115985711B (en) | 2023-03-17 | 2023-03-17 | High-voltage explosion-proof switch |
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| Publication Number | Publication Date |
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| CN115985711A true CN115985711A (en) | 2023-04-18 |
| CN115985711B CN115985711B (en) | 2023-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310263590.6A Active CN115985711B (en) | 2023-03-17 | 2023-03-17 | High-voltage explosion-proof switch |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4367610A (en) * | 1979-04-10 | 1983-01-11 | John Mowlem & Company Limited | Door opening and closing mechanism |
| CN103337391A (en) * | 2013-07-15 | 2013-10-02 | 青岛天迅电气有限公司 | Quick door opening and closing locking mechanism of explosion-proof switch box |
| CN204792523U (en) * | 2015-07-31 | 2015-11-18 | 西安科技大学 | Electric blocked mechanical system of mine -used flameproof switch door closure |
| CN106165044A (en) * | 2014-04-09 | 2016-11-23 | Abb瑞士股份有限公司 | Knife switch assembly, electrical power distribution switches cabinet and the method being used for preventing electric discharge |
| CN215578270U (en) * | 2021-06-22 | 2022-01-18 | 山西际安电气有限公司 | Mechanical interlocking mechanism of electric handcart and grounding disconnecting link |
-
2023
- 2023-03-17 CN CN202310263590.6A patent/CN115985711B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4367610A (en) * | 1979-04-10 | 1983-01-11 | John Mowlem & Company Limited | Door opening and closing mechanism |
| CN103337391A (en) * | 2013-07-15 | 2013-10-02 | 青岛天迅电气有限公司 | Quick door opening and closing locking mechanism of explosion-proof switch box |
| CN106165044A (en) * | 2014-04-09 | 2016-11-23 | Abb瑞士股份有限公司 | Knife switch assembly, electrical power distribution switches cabinet and the method being used for preventing electric discharge |
| CN204792523U (en) * | 2015-07-31 | 2015-11-18 | 西安科技大学 | Electric blocked mechanical system of mine -used flameproof switch door closure |
| CN215578270U (en) * | 2021-06-22 | 2022-01-18 | 山西际安电气有限公司 | Mechanical interlocking mechanism of electric handcart and grounding disconnecting link |
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| Publication number | Publication date |
|---|---|
| CN115985711B (en) | 2023-05-23 |
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