CN108899243B - Interlocking mechanism and high-voltage switch equipment - Google Patents
Interlocking mechanism and high-voltage switch equipment Download PDFInfo
- Publication number
- CN108899243B CN108899243B CN201810729685.1A CN201810729685A CN108899243B CN 108899243 B CN108899243 B CN 108899243B CN 201810729685 A CN201810729685 A CN 201810729685A CN 108899243 B CN108899243 B CN 108899243B
- Authority
- CN
- China
- Prior art keywords
- assembly
- lower door
- cross beam
- fixedly connected
- transmission
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 50
- 230000005540 biological transmission Effects 0.000 claims abstract description 60
- 230000009471 action Effects 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/04—Interlocking mechanisms
- H01H31/06—Interlocking mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating contacts
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
An interlocking mechanism and high-voltage switch equipment comprise a grounding switch operation shaft, a cam assembly connected with the grounding switch operation shaft in a transmission way, a push rod assembly with one end propped against the cam assembly, a first reset spring for driving the push rod assembly to be separated from a lower door, and a second reset spring for driving the push rod assembly to be movably inserted into the lower door and form limit fit with the lower door; the lock rod assembly is fixedly connected with the cross beam assembly and is fixedly connected with the support plate, and the limit assembly is used for keeping the lock rod assembly separated from the lower door; the beam assembly covers the ground operating shaft. Therefore, the possibility that a user opens the lower door to enter the electrified compartment under the condition that the high-voltage switch equipment is not grounded is eliminated, and the interlocking mechanism not only can realize a safety interlocking function, but also has a more compact structure and higher reliability compared with the traditional interlocking mechanism.
Description
Technical Field
The invention belongs to the technical field of high-voltage switches, and particularly relates to high-voltage switch equipment and an interlocking mechanism thereof.
Background
Because the voltage of the high-voltage switch equipment is extremely high, extremely high dangers exist, and in order to ensure the personal safety of operation maintenance personnel and prevent the operators from entering the electrified compartment by mistake, the high-voltage switch equipment is required to be provided with a linkage device meeting the 'five-prevention' locking requirement.
The interlocking requirements between the lower door of the device (hereinafter simply referred to as lower door) and the grounding switch are as follows: when the high-voltage switch equipment operates, the grounding switch is in a switching-off state, and a cabinet door of the electrified compartment is forbidden to be opened so as to ensure operation safety; when the equipment needs to be checked and maintained, after the switch fails, the grounding switch in the high-voltage switch equipment is in a closing state, namely the inside of the high-voltage switch equipment is safely grounded, and the lower door can be opened. In order to achieve the above-mentioned interlocking requirement, the opening and closing states of the grounding switch and the locking and unlocking states of the lower door are required to be respectively bound, and the existing high-voltage switch equipment generally only uses the abutting action of the spring to achieve the interlocking of the lower door, but the structure of the scheme is generally not compact, and the interlocking reliability is not high.
Disclosure of Invention
The invention aims to provide an interlocking mechanism which solves the technical problems that in the prior art, the interlocking structure of high-voltage switch equipment is compact and the reliability is unstable.
In order to achieve the above purpose, the invention adopts the following technical scheme: the high-voltage switch equipment comprises a grounding switch operation shaft, a cam component, a push rod component and a first reset spring, wherein the grounding switch operation shaft is used for driving the grounding switch to open or close; the interlocking mechanism further comprises a supporting plate fixedly connected to the cabinet body, a lock rod assembly movably inserted into the lower door and in limiting fit with the lower door, a cross beam assembly fixedly connected to the lock rod assembly and used for driving the lock rod assembly to be separated from the lower door, and a limiting assembly fixedly connected to the supporting plate and used for keeping the lock rod assembly in a state separated from the lower door; the beam assembly covers the ground operating shaft.
Further, the interlocking mechanism further comprises a load switch operation shaft for driving the load switch to open or close, and a pressing plate fixedly connected to the ejector rod assembly and used for pressing down the auxiliary switch; the load switch operating shaft is connected with the cam assembly in a transmission way, and the pressing plate is opposite to the auxiliary switch.
Further, the interlocking mechanism further comprises a first transmission assembly in transmission connection with the grounding switch operation shaft and the cam assembly respectively, and a second transmission assembly in transmission connection with the load switch operation shaft and the cam assembly respectively.
Further, the ejector rod assembly comprises an ejector block propped against the cam assembly, an ejector rod connected to the ejector block and movably inserted into the lower door, and a first sleeve sleeved on the periphery of the ejector rod and fixedly connected to the supporting plate; the first reset spring is sleeved on the periphery of the ejector rod, opposite ends of the first reset spring respectively abut against the ejector block and the first sleeve, and the pressing plate is fixedly connected with the ejector block.
Further, the cam assembly comprises a transmission shaft, a cam and an indicating disc, wherein the transmission shaft is respectively connected with the first transmission assembly and the second transmission assembly in a transmission way, the cam is sleeved on the periphery of the transmission shaft, the indicating disc is positioned on the outer side of the cam, and the indicating disc is sleeved on the periphery of the transmission shaft and is used for indicating the opening or closing state of the load switch; the top block is propped against the cam from the lower part.
Further, the beam assembly comprises a beam fixedly connected to the lock rod assembly, a baffle fixedly connected to the beam, a handle fixedly connected to the baffle and used for driving the baffle to move to cover the grounding switch operation shaft, two second sleeves fixedly connected to the supporting plate and propped against the beam from the lower part, and second reset springs with opposite ends respectively connected to the beam and the supporting plate; the limiting component is propped against the cross beam from the lower part.
Further, the lock rod assembly comprises a first lock rod and a second lock rod which are respectively and fixedly connected to two opposite ends of the cross beam, and the first lock rod and the second lock rod respectively penetrate through the two second sleeves to be in movable plug-in fit with the lower door.
Further, the limiting assembly comprises a first rotating shaft and a second rotating shaft which are respectively and fixedly connected with the supporting plate, a tripping and propping plate which is respectively and rotatably connected with the first rotating shaft and the second rotating shaft, and a third reset spring which is sleeved on the periphery of the first rotating shaft and respectively propped against the tripping and the supporting plate; opposite ends of the propping plate respectively prop against one end of the lower door and one end of the trip, and the other end of the trip props against the cross beam from the lower side.
Further, one end of the trip abuts against the abutting block, and the other end of the trip is provided with a notch and a wedge-shaped surface connected with the notch from below; a horizontal end face of the notch is propped against the cross beam from the lower side.
The invention also provides high-voltage switch equipment which comprises a lower door, a load switch, a grounding switch, an auxiliary switch and a cabinet body.
The interlocking mechanism and the high-voltage switch equipment provided by the invention have the beneficial effects that: compared with the prior art, the interlocking mechanism can release the abutting action of the cam component and the ejector rod component when the high-voltage switch equipment is grounded by operating the grounding operation shaft, so that the ejector rod component is separated from the plugging fit with the lower door under the action of the first reset spring; simultaneously, the locking rod component can be separated from the plugging fit with the lower door by pulling the beam component upwards, the beam component covers the grounding operation shaft, and the locking rod component is kept in a state of being separated from the lower door by abutting against the beam component from below through the limiting component; therefore, the user can open the lower door after operating the grounding operation shaft and pulling up the beam assembly, and the beam assembly covers the grounding operation shaft after pulling up the beam assembly, so that the grounding operation shaft cannot be operated again under the condition that the lower door can be opened, the possibility that the user opens the lower door to enter the electrified compartment under the condition that the high-voltage switch equipment is not grounded is eliminated, and the interlocking mechanism can realize a safety interlocking function and has a more compact structure and higher reliability compared with the traditional interlocking mechanism.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic three-dimensional structure of an interlocking mechanism according to an embodiment of the present invention;
fig. 2 is a schematic front view of an interlocking mechanism according to an embodiment of the present invention;
FIG. 3 is a schematic side view of an interlock mechanism according to an embodiment of the present invention;
FIG. 4 is an enlarged schematic view of the portion A in FIG. 3;
FIG. 5 is a schematic view of an exploded view of an interlock mechanism according to an embodiment of the present invention;
wherein, each reference sign in the figure:
s1, lower door; 20. a ground switch operating shaft; 30. a cam assembly; 40. a push rod assembly; 50. a first return spring; 60. a support plate; 70. a locking bar assembly; 80. a beam assembly; 90. a limit component; 100. a load switch operation shaft; 110. an auxiliary switch; 120. a pressing plate; s2, a cabinet body; 41. a top block; 42. a push rod; 43. a first sleeve; 31. a cam; 32. an indication plate; 81. a cross beam; 82. a baffle; 83. a handle; 84. a second sleeve; 85. a second return spring; 71. a first lock lever; 72. a second lock lever; w, locating plate; 91. a first rotating shaft; 92. tripping; 93. a top plate; 94. a second rotating shaft; 95. a third return spring; H. a notch; 921. a first end; 922. a second end; l1, a horizontal end face; l2, wedge face; p, sign.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. 120
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Referring to fig. 1 to 3, an interlocking mechanism provided by the present invention will now be described. The interlocking mechanism is used for high-voltage switch equipment with a lower door S1, a load switch (not shown), a grounding switch (not shown) and a cabinet body S2, and comprises a grounding switch operation shaft 20 for driving the grounding switch to open or close, a cam assembly 30 connected with the grounding switch operation shaft 20 in a transmission way, a push rod assembly 40 with one end propped against the cam assembly 30, and a first reset spring 50 for driving the push rod assembly 40 to be separated from the lower door S1, wherein the other end of the push rod assembly 40 is movably inserted into the lower door S1 and forms limit fit with the lower door S1; the interlocking mechanism further comprises a supporting plate 60 fixedly connected to the cabinet body S2, a lock rod assembly 70 movably inserted into the lower door S1 and forming limit fit with the lower door S1, a cross beam assembly 80 fixedly connected to the lock rod assembly 70 and used for driving the lock rod assembly 70 to be separated from the lower door S1, and a limit assembly 90 fixedly connected to the supporting plate 60 and used for keeping the lock rod assembly 70 in a state separated from the lower door S1; the beam assembly 80 covers the ground switch operating shaft 20. Specifically, when the lower door S1 needs to be opened to debug or maintain the high-voltage switch cabinet, the grounding switch operation shaft 20 should be operated to ground the high-voltage switch equipment, in this embodiment, the grounding switch operation shaft 20 is operated to drive the cam assembly 30 connected with the grounding switch operation shaft to rotate in a counterclockwise direction, so that the contact point between the cam assembly 30 and the ejector rod assembly 40 gradually moves upwards, and the ejector rod assembly 40 can move upwards under the action of the first return spring 50 until the lower door S1 is separated from the cam assembly, thereby realizing the interlocking requirement that the lower door S1 can not be opened when being grounded; in addition, the lower door S1 is also in plug-in fit with the lock rod assembly 70, the lock rod assembly 70 is fixedly connected with the beam assembly 80, a user can pull the lock rod assembly 70 away from the lower door S1 by moving the beam assembly 80 upwards, the beam assembly 80 and the lock rod assembly 70 are limited at a position separated from the lower door S1 by the limiting assembly 90 fixedly connected with the supporting plate 60, and meanwhile, the beam assembly 80 covers the grounding switch operating shaft 20 at the position, so that when the lower door S1 is opened, the user can not operate the grounding switch operating shaft 20 any more, the possibility that the high-voltage switch equipment is not grounded under the condition that the lower door S1 can be opened is avoided, the safety protection performance of the high-voltage switch equipment is further improved, and the joint protection requirement is met. The interlocking mechanism provided by the embodiment of the invention locks the lower door S1 through the lock rod assembly 70 and the ejector rod assembly 40 at the same time; through first reset spring 50, beam assembly 80 cooperates spacing subassembly 90 realization unblock for whole interlocking mechanism possesses higher compactness and reliability and satisfies the interlocking requirement simultaneously.
Compared with the prior art, the interlocking mechanism provided by the invention has the advantages that the grounding switch operation shaft 20 is operated to enable the high-voltage switch equipment to be grounded and simultaneously release the abutting action of the cam assembly 30 and the ejector rod assembly 40, so that the ejector rod assembly 40 is separated from the plugging fit with the lower door S1 under the action of the first reset spring 50; meanwhile, the locking rod assembly 70 can be separated from the plugging fit with the lower door S1 by pulling the beam assembly 80 upwards, the beam assembly 80 covers the grounding switch operating shaft 20, and the locking rod assembly 70 is kept in a state of being separated from the lower door S1 by abutting against the beam assembly 80 from below through the limiting assembly 90; in this way, the user must open the lower door S1 after operating the ground switch operating shaft 20 and pulling up the beam assembly 80, and the beam assembly 80 covers the ground operation circumference after pulling up the beam assembly 80, so that the ground switch operating shaft 20 cannot be operated again in the case that the lower door S1 is openable, thereby eliminating the possibility that the user enters the charging compartment in the case that the high voltage switching device is not grounded, and further enabling the interlock mechanism not only to implement the safety interlock function, but also to improve the structure with more compactness and higher reliability.
The interlocking mechanism provided by the invention can be applied to other devices needing safety interlocking besides high-voltage switch devices without being limited solely.
Preferably, referring to fig. 5, the interlocking mechanism provided in the embodiment of the present invention further includes a sign P rotatably connected to the cabinet S2, where the sign P is used for covering the load switch operating shaft 100 or the grounding switch operating shaft 20 to indicate whether the load switch operating shaft 100 or the grounding switch operating shaft 20 can be operated at present.
Further, referring to fig. 1 to fig. 4, as a specific embodiment of the interlocking mechanism provided by the present invention, the interlocking mechanism further includes a load switch operating shaft 100 for driving the load switch to open or close, and a pressing plate 120 fixedly connected to the ejector rod assembly 40 for pressing down the auxiliary switch 110; the load switch operating shaft 100 is drivingly connected to the cam assembly 30, and the pressure plate 120 is directly opposite to the auxiliary switch 110. Specifically, when the high voltage switch device is in normal operation, the push rod assembly 40 is in a state of being inserted into the lower door S1, i.e. the lower door S1 cannot be opened, when a user operates the load switch operating shaft 100 to close the load switch, the cam assembly 30 in transmission connection with the load switch operating shaft 100 rotates clockwise, so as to push the push rod assembly 40 to move downwards, and it is understood that the lower door S1 still cannot be opened, and the pressing plate 120 fixedly connected with the push rod assembly 40 moves downwards along with the push rod assembly 40, so as to touch and press the auxiliary switch 110 opposite to the pressing plate 120, thereby changing the normally open point and the normally closed point of the auxiliary switch 110, and providing corresponding auxiliary contacts for electric interlocking in the secondary circuit; when the user operates the grounding switch operating shaft 20, the cam assembly 30 rotates counterclockwise under the transmission action of the grounding switch operating shaft 20, so that the abutting action between the cam assembly 30 and the ejector rod assembly 40 is gradually released, the ejector rod assembly 40 is reset under the action of the first reset spring 50, and meanwhile, the pressing plate 120 fixedly connected with the ejector rod assembly is driven to move upwards, so that the pressing action of the pressing plate 120 on the auxiliary switch 110 is released, and the normally open point and the normally closed point of the auxiliary switch 110 are restored.
Further, referring to fig. 1 to 2, as an embodiment of the interlocking mechanism provided in the present invention, the interlocking mechanism further includes a first transmission assembly (not shown) drivingly connected to the ground switch operating shaft 20 and the cam assembly 30, respectively, and a second transmission assembly (not shown) drivingly connected to the load switch operating shaft 100 and the cam assembly 30, respectively. Specifically, the first transmission assembly and the second transmission assembly are independent from each other and are respectively in transmission connection with the cam assembly 30, and the first transmission assembly is mainly used for transmitting the torque applied to the grounding switch operation shaft 20 by a user so as to push the cam assembly 30 to rotate anticlockwise; the second transmission assembly is mainly used for transmitting the torque applied to the load switch operation shaft 100 by the user, so as to push the cam assembly 30 to rotate clockwise; the first transmission assembly and the second transmission assembly can be gear transmission mechanisms, gear rack transmission, connecting rod transmission mechanisms, electromagnetic valve transmission assemblies and the like, and can also be transmission assemblies formed by combining the above transmission mechanisms for transmitting torque, and the transmission assemblies are not limited only.
Further, referring to fig. 1 to 4, as a specific embodiment of the interlocking mechanism provided by the present invention, the ejector rod assembly 40 includes an ejector block 41 that abuts against the cam assembly 30, an ejector rod 42 that is connected to the ejector block 41 and movably inserted into the lower door S1, and a first sleeve 43 that is sleeved on the outer periphery of the ejector rod 42 and fixedly connected to the support plate 60; the first return spring 50 is sleeved on the outer periphery of the ejector rod 42, opposite ends of the first return spring are respectively abutted against the ejector block 41 and the first sleeve 43, and the pressing plate 120 is fixedly connected to the ejector block 41. Specifically, the ejector block 41 is connected to the upper end of the ejector rod 42, and the first sleeve 43 has a hollow cylindrical shape, the inner diameter of which is larger than the diameter of the ejector rod 42 and smaller than the diameter of the first return spring 50, and the outer diameter of which is larger than the diameter of the first return spring 50; the first return spring 50 is sleeved on the outer periphery of the ejector rod 42, and the upper end and the lower end of the first return spring respectively abut against the ejector block 41 and the first sleeve 43. When the cam assembly 30 rotates clockwise to press the ejector block 41, the ejector block 41 drives the ejector rod 42 to move downwards, and meanwhile, the first sleeve 43 is connected to the fixed support plate 60 and abuts against the lower end of the first return spring 50, so that the first return spring 50 is compressed, and elastic potential energy for recovering deformation is accumulated, and therefore, when the cam assembly 30 rotates anticlockwise away from the ejector block 41, the ejector block 41 moves upwards under the action of the elastic potential energy of the first return spring 50, and the ejector rod 42 is driven to break away from the plug-in fit with the lower door S1. In addition, in other embodiments of the present invention, the pressing plate 120 may be fixedly connected to the ejector rod 42, so that the cam assembly 30 can move to move the pressing plate 120, which is not limited herein.
Further, referring to fig. 2 to 5 together, as a specific embodiment of the interlocking mechanism provided by the present invention, the cam assembly 30 includes a transmission shaft (not shown) respectively connected to the first transmission assembly and the second transmission assembly in a transmission manner, a cam 31 sleeved on the periphery of the transmission shaft, and an indication disc 32 located on the outer side of the cam 31, where the indication disc 32 is sleeved on the periphery of the transmission shaft and is used for indicating a state of opening or closing of the load switch; the top block 41 abuts against the cam 31 from below. Specifically, the cam 31 and the indicating disc 32 are respectively sleeved on the periphery of the transmission shaft, the indicating disc 32 is sleeved on the outer end of the transmission shaft, and a mark (not shown) for indicating opening and closing is attached to the indicating disc 32, and the indicating disc 32 and the cam 31 are sleeved on the transmission shaft at the same time, so that the cam 31 and the indicating disc 32 are driven to rotate by the same angle when the transmission shaft rotates by a certain angle, and a user can judge the position and state of the cam 31 and even the top block 41 propped against the cam 31 by checking the position of the mark on the indicating disc 32, thereby further playing the role of safety prompt; in addition, due to the structural characteristics of the cam 31 itself, the top block 41 against which it abuts can move up and down in the vertical direction with the rotation of the cam 31.
Further, referring to fig. 1 to 5 together, as an embodiment of the interlocking mechanism provided by the present invention, the beam assembly 80 includes a beam 81 fixedly connected to the lock rod assembly 70, a baffle 82 fixedly connected to the beam 81, a handle 83 fixedly connected to the baffle 82 for driving the baffle 82 to move to cover the grounding switch operation shaft 20, two second sleeves 84 fixedly connected to the support plate 60 and abutting against the beam 81 from below, and second return springs 85 respectively connected to the beam 81 and the support plate 60 at opposite ends; the limiting assembly 90 abuts against the cross beam 81 from below. Specifically, in this embodiment, the two second sleeves 84 are hollow and cylindrical, and are respectively supported at two opposite ends of the beam 81 from below, the second return spring 85 is supported at the middle of the beam 81 from below, and a downward moving tension is always applied to the beam 81 in the process of moving upwards, and it can be understood that when the limiting component 90 is separated from the abutting action with the beam 81, i.e. the limiting component 90 no longer supports the beam 81 from below, the beam 81 moves downwards under the action of the second return spring 85 until the limiting component abuts against the top surfaces of the two second sleeves 84; the cross beam 81 extends in the horizontal direction, that is, the extending direction is perpendicular to the extending direction of the second sleeve 84, the lock rod assembly 70 and the baffle 82 are fixedly connected with the cross beam 81 respectively, the lock rod assembly 70 is inserted into the second sleeve 84, and the handle 83 is fixedly connected to the outer side surface of the baffle 82. In this way, the user can pull the handle 83 upwards to move the baffle 82 upwards together with the cross beam 81, and the cross beam 81 and the lock rod assembly 70 only move upwards along the vertical direction due to the limitation of the second sleeve 84 on the lock rod assembly 70, so that the phenomenon of deflection caused by possible unstable force application of the user is avoided; when the handle 83 is pulled up to a certain height, the lock rod assembly 70 is separated from the plug-in fit with the lower door S1, at the moment, the limit assembly 90 is propped against the cross beam 81 from the lower part, the cross beam 81 and the lock rod are supported and kept at the current position, the lower door S1 can be opened, meanwhile, the baffle 82 blocks the grounding switch operation shaft 20, so that under the condition that the lower door S1 can be opened, a user cannot operate the grounding switch operation shaft 20, the possibility that the user enters a charged compartment under the condition that the high-voltage switch equipment is not grounded is avoided, the interlocking requirement of the high-voltage switch equipment is met, and the safety and reliability are improved; moreover, compared with the prior structure which is independently reset by a spring to realize unlocking by manually lifting the lifting handle 83, the unlocking structure has higher stability and reliability.
Further, referring to fig. 1 to 5 together, as an embodiment of the interlocking mechanism provided by the present invention, the lock rod assembly 70 includes a first lock rod 71 and a second lock rod 72 fixedly connected to opposite ends of the cross beam 81, and the first lock rod 71 and the second lock rod 72 respectively pass through two second sleeves 84 to be movably inserted and engaged with the lower door S1. In the embodiment of the present invention, the upper end portion of the first lock lever 71 passes through a second sleeve 84 and is fixedly connected with one end of the cross member 81; the length of the second lock rod 72 is longer than that of the first lock rod 71, after the second lock rod passes through another second sleeve 84, the top passes through the cross beam 81 and finally is in sliding fit with a positioning plate W fixedly connected with the cabinet S2, a through hole opposite to the second lock rod 72 is formed in the positioning plate W, the top of the second lock rod 72 is arranged in the through hole in a penetrating manner and is in sliding fit with the positioning plate W, the second lock rod 72 is fixedly connected with the other end of the cross beam 81, and the top of the second lock rod is influenced by the positioning plate W and can only move up and down along the vertical direction, so that a certain guiding effect is also achieved on the movement of the cross beam 81.
Further, referring to fig. 3 to 5 together, as a specific embodiment of the interlocking mechanism provided by the present invention, the limiting assembly 90 includes a first rotating shaft 91 and a second rotating shaft 94 (not shown) fixedly connected to the supporting plate 60, a trip 92 and a top supporting plate 93 rotatably connected to the first rotating shaft 91 and the second rotating shaft 94, respectively, and a third return spring 95 sleeved on the periphery of the first rotating shaft 91 and propped against the trip 92 and the supporting plate 60, respectively; opposite ends of the abutting plate 93 abut against one ends of the lower door S1 and the trip 92, respectively, and the other end of the trip 92 abuts against the cross member 81 from below. Specifically, the part between the opposite ends of the trip 92 is sleeved on the periphery of the first rotating shaft 91 and is in rotation connection and coordination with the trip 92, the third reset spring 95 is also sleeved on the periphery of the first rotating shaft 91, and the opposite ends of the third reset spring are respectively propped against the trip 92 and the supporting plate 60; when the user moves the lower door S1 below the support plate 60 and abuts against the lower end of the abutment plate 93, the movement of the lower door S1 pushes the abutment plate 93 to rotate around the second rotation shaft 94, and at this time, one end of the trip 92 abutting against the upper end of the abutment plate 93 rotates around the first rotation shaft 91, and the other end of the trip 92 rotates in the opposite direction, and the other end of the trip 92 is separated from the cross beam 81, and the cross beam 81 moves downward rapidly under the action of the second return spring 85, so that the lock rod is in plug-connection engagement with the lower door S1, and the lower door S1 is fixed. Conversely, when the lower door S1 needs to be removed, the user pulls up the handle 83 to disengage the lock lever from the lower door S1, and after the lower door S1 is removed, the abutment block 41 is reset, so that the abutment with the disengagement is released, the disengagement is reset under the action of the third reset spring 95, at this time, the cross beam 81 moves above the disengagement 92 again, and when the user releases the handle 83, the cross beam 81 is supported at a certain height by the disengagement 92 again, so that the lock lever is also kept in a state of being disengaged from the lower door S1.
Further, referring to fig. 4 to 5 together, as a specific embodiment of the interlocking mechanism provided by the present invention, one end of the trip 92 abuts against the abutment block 41, and the other end has a notch H and a wedge-shaped surface L2 connected to the notch H from below; a horizontal end face L1 of the notch H abuts against the cross member 81 from below. Specifically, the trip 92 includes a first end 921 and a second end 922 having an obtuse angle extending in the direction, and the first end 921 has an arc surface that abuts against the abutment block 41 from the outside; a notch H is formed on the second end 922, and a wedge-shaped surface L2 is connected below the notch H, where the notch H is formed by enclosing a horizontal end surface L1 and a vertical end surface, and the beam 81 abuts against the horizontal end surface L1 from above. When the lower door S1 pushes the abutment block 41 to move, the abutment block 41 pushes the first end 921 to move towards the outside of the cabinet S2, and then the second end 922 simultaneously moves towards the inside of the cabinet S2, the cross beam 81 is separated from the horizontal end face L1, and moves downward under the action of the second return spring 85; when the lower door S1 needs to be opened, the user pulls the handle 83 to move the cross beam 81 upwards, slides against the wedge-shaped surface L2 in the process of moving the cross beam 81 upwards, pushes the second end 922 to gradually rotate inwards, compresses the third return spring 95, and moves to the outside of the cabinet S2 under the action of the restoring force of the third return spring 95 when the cross beam 81 continues to move upwards to the notch H and the cross beam 81 does not abut against the wedge-shaped surface L2, so that the second end 922 moves to the lower side of the cross beam 81, at the moment, the user releases the handle 83, and the cross beam 81 moves downwards under the action of the second return spring 85 to rapidly abut against the horizontal end surface L1 of the notch H.
Referring to fig. 1 to 5, the present invention further provides a high voltage switchgear, which includes a lower door S1, a load switch, a grounding switch, an auxiliary switch 110, and a cabinet S2, and further includes the above-mentioned interlocking mechanism.
Compared with the prior art, the high-voltage switch equipment provided by the invention adopts the interlocking mechanism, and the grounding switch operation shaft 20 is operated to ensure that the high-voltage switch equipment is grounded and simultaneously the abutting action of the cam assembly 30 and the ejector rod assembly 40 is released, so that the ejector rod assembly 40 is separated from the plugging fit with the lower door S1 under the action of the first reset spring 50; meanwhile, the locking rod assembly 70 can be separated from the plugging fit with the lower door S1 by pulling the beam assembly 80 upwards, the beam assembly 80 covers the grounding switch operating shaft 20, and the locking rod assembly 70 is kept in a state of being separated from the lower door S1 by abutting against the beam assembly 80 from below through the limiting assembly 90; in this way, the user must open the lower door S1 after operating the ground switch operating shaft 20 and pulling up the beam assembly 80, and the beam assembly 80 covers the ground operation circumference after pulling up the beam assembly 80, so that the ground switch operating shaft 20 cannot be operated again in the case that the lower door S1 is openable, thereby eliminating the possibility that the user enters the charging compartment in the case that the high voltage switching device is not grounded, and further enabling the interlock mechanism not only to implement the safety interlock function, but also to improve the structure with more compactness and higher reliability.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (5)
1. Interlocking device for have down door, load switch, earthing switch and the high tension switchgear of cabinet body, its characterized in that: the device comprises a grounding switch operation shaft for driving a grounding switch to open or close, a cam assembly in transmission connection with the grounding switch operation shaft, a push rod assembly with one end propped against the cam assembly, a first reset spring for driving the push rod assembly to be separated from the lower door, and a second reset spring for driving the push rod assembly to be movably inserted into the lower door and form limit fit with the lower door; the interlocking mechanism further comprises a supporting plate fixedly connected to the cabinet body, a lock rod assembly movably inserted into the lower door and in limiting fit with the lower door, a cross beam assembly fixedly connected to the lock rod assembly and used for driving the lock rod assembly to be separated from the lower door, and a limiting assembly fixedly connected to the supporting plate and used for keeping the lock rod assembly in a state separated from the lower door; the beam assembly covers the grounding switch operating shaft;
the interlocking mechanism further comprises a load switch operation shaft for driving the load switch to open or close, and a pressing plate fixedly connected to the ejector rod assembly and used for pressing down the auxiliary switch; the load switch operating shaft is connected with the cam assembly in a transmission way, and the pressing plate is opposite to the auxiliary switch;
the interlocking mechanism further comprises a first transmission assembly which is respectively connected with the grounding switch operation shaft and the cam assembly in a transmission way, and a second transmission assembly which is respectively connected with the load switch operation shaft and the cam assembly in a transmission way; the first transmission assembly is mutually independent from the second transmission assembly and is respectively in transmission connection with the cam assembly, and the first transmission assembly is used for transmitting the torque applied to the grounding switch operation shaft by a user; the second transmission assembly is used for transmitting the torque applied to the load switch operation shaft by a user;
the beam assembly comprises a beam fixedly connected to the lock rod assembly, a baffle fixedly connected to the beam, a handle fixedly connected to the baffle and used for driving the baffle to move to cover the grounding switch operation shaft, two second sleeves fixedly connected to the supporting plate and propped against the beam from the lower part, and second reset springs with opposite ends respectively connected to the beam and the supporting plate; the limiting component is propped against the cross beam from the lower part;
the limiting assembly comprises a first rotating shaft and a second rotating shaft which are respectively and fixedly connected with the supporting plate, a tripping and propping plate which is respectively and rotatably connected with the first rotating shaft and the second rotating shaft, and a third reset spring which is sleeved on the periphery of the first rotating shaft and respectively propped against the tripping and the supporting plate; the opposite ends of the propping plate respectively prop against the lower door and one end of the trip, and the other end of the trip props against the cross beam from the lower part, specifically, the part between the opposite ends of the trip is sleeved on the periphery of the first rotating shaft and is in rotating connection fit with the first rotating shaft, the third reset spring is also sleeved on the periphery of the first rotating shaft, and the opposite ends of the third reset spring respectively prop against the trip and the supporting plate; when a user moves the lower door below the supporting plate and abuts against the lower end of the abutting plate, the lower door is pushed to rotate around the second rotating shaft, at the moment, one end of the trip, which abuts against the upper end of the abutting plate, also rotates around the first rotating shaft, then the other end of the trip rotates in the opposite direction, and then the other end of the trip is separated from the cross beam, and the cross beam rapidly moves downwards under the action of a second reset spring, so that the lock rod is in plug-in fit with the lower door, and then the lower door is fixed; conversely, when the lower door needs to be taken down, a user pulls up the lifting handle to enable the lock rod to be separated from the lower door, the ejector block is reset after the lower door is taken down, so that the ejector block is released from abutting against the release, the release is reset under the action of the third reset spring, at the moment, the cross beam moves to the position above the release again, and when the user releases the lifting handle, the cross beam is supported at a certain height by the release again, so that the lock rod is also kept in a state of being separated from the lower door;
one end of the trip abuts against the top block, and the other end of the trip is provided with a notch and a wedge-shaped surface connected with the notch from below; the horizontal end face of the notch is propped against the cross beam from the lower part, specifically: the trip comprises a first end part and a second end part, the extending directions of the first end part and the second end part are obtuse angles, the first end part is provided with an arc surface, and the arc surface is propped against the top block from the outer side; a notch and a wedge-shaped surface connected below the notch are formed by enclosing a horizontal end surface and a vertical end surface, and the cross beam is propped against the horizontal end surface from the upper side; the lower door pushes the top block to move, the top block pushes the first end part to move to the outer side of the cabinet body, the second end part simultaneously moves to the inner side of the cabinet body, and the cross beam is separated from the horizontal end surface and moves downwards under the action of the second reset spring; when the lower door needs to be opened, a user pulls the lifting handle to enable the cross beam to move upwards, the lifting handle is pushed to move upwards in the process of moving upwards by the cross beam and the wedge-shaped surface, meanwhile, the second end portion is pushed to gradually rotate inwards, the third return spring is compressed at the moment, when the cross beam continues to move upwards to the notch, the cross beam does not contact with the wedge-shaped surface any more, the second end portion moves to the outer side of the search cabinet body to return under the action of the restoring force of the third return spring, then moves to the lower side of the cross beam, at the moment, the user releases the lifting handle, and the cross beam moves downwards under the action of the second return spring to abut against the horizontal end face of the notch.
2. The interlock mechanism as recited in claim 1 wherein: the ejector rod assembly comprises an ejector block propped against the cam assembly, an ejector rod connected to the ejector block and movably inserted into the lower door, and a first sleeve sleeved on the periphery of the ejector rod and fixedly connected to the supporting plate; the first reset spring is sleeved on the periphery of the ejector rod, opposite ends of the first reset spring respectively abut against the ejector block and the first sleeve, and the pressing plate is fixedly connected with the ejector block.
3. The interlock mechanism of claim 2 wherein: the cam assembly comprises a transmission shaft, a cam and an indicating disc, wherein the transmission shaft is respectively connected with the first transmission assembly and the second transmission assembly in a transmission way, the cam is sleeved on the periphery of the transmission shaft, the indicating disc is positioned on the outer side of the cam, and the indicating disc is sleeved on the periphery of the transmission shaft and is used for indicating the state of opening or closing of the load switch; the top block is propped against the cam from the lower part.
4. The interlock mechanism as recited in claim 1 wherein: the locking rod assembly comprises a first locking rod and a second locking rod which are respectively and fixedly connected to two opposite ends of the cross beam, and the first locking rod and the second locking rod respectively penetrate through the two second sleeves to be in movable plug-in fit with the lower door.
5. High tension switchgear, including the door down, load switch, earthing switch, auxiliary switch and cabinet body, its characterized in that: the high voltage switchgear further comprising an interlock mechanism according to any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810729685.1A CN108899243B (en) | 2018-07-05 | 2018-07-05 | Interlocking mechanism and high-voltage switch equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810729685.1A CN108899243B (en) | 2018-07-05 | 2018-07-05 | Interlocking mechanism and high-voltage switch equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108899243A CN108899243A (en) | 2018-11-27 |
| CN108899243B true CN108899243B (en) | 2024-04-02 |
Family
ID=64347727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810729685.1A Active CN108899243B (en) | 2018-07-05 | 2018-07-05 | Interlocking mechanism and high-voltage switch equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108899243B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113078019B (en) * | 2021-05-08 | 2022-03-08 | 安徽新高电气有限公司 | Transmission mechanism for isolating switch |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102543516A (en) * | 2012-01-10 | 2012-07-04 | 昆明东控电器成套设备有限公司 | Five-prevention system of high-voltage switch cabinet |
| CN203179776U (en) * | 2013-03-23 | 2013-09-04 | 广东南粤电气有限公司 | High voltage switch cabinet lower door and grounding switch interlock mechanism |
| CN206135283U (en) * | 2016-10-27 | 2017-04-26 | 温州兴机电器有限公司 | High tension switchgear's no. 5 prevents interlocking device |
| CN206134551U (en) * | 2016-10-19 | 2017-04-26 | 成都宣扬电器有限公司 | Novel aerify cabinet door interlocking device |
| CN107610959A (en) * | 2017-11-01 | 2018-01-19 | 江苏南瑞帕威尔电气有限公司 | A kind of ring main unit earthing interlocking device |
| CN206928787U (en) * | 2017-03-31 | 2018-01-26 | 泰豪科技(深圳)电力技术有限公司 | Lower door interlock and the ring main unit using the interlock |
| CN107946107A (en) * | 2018-01-02 | 2018-04-20 | 亚洲电力设备(深圳)股份有限公司 | The switchgear of interlock is equipped between a kind of Xiamen and earthing switch and disconnecting switch |
| CN208690159U (en) * | 2018-07-05 | 2019-04-02 | 泰豪科技(深圳)电力技术有限公司 | Interlocking mechanism and high-tension switch gear |
-
2018
- 2018-07-05 CN CN201810729685.1A patent/CN108899243B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102543516A (en) * | 2012-01-10 | 2012-07-04 | 昆明东控电器成套设备有限公司 | Five-prevention system of high-voltage switch cabinet |
| CN203179776U (en) * | 2013-03-23 | 2013-09-04 | 广东南粤电气有限公司 | High voltage switch cabinet lower door and grounding switch interlock mechanism |
| CN206134551U (en) * | 2016-10-19 | 2017-04-26 | 成都宣扬电器有限公司 | Novel aerify cabinet door interlocking device |
| CN206135283U (en) * | 2016-10-27 | 2017-04-26 | 温州兴机电器有限公司 | High tension switchgear's no. 5 prevents interlocking device |
| CN206928787U (en) * | 2017-03-31 | 2018-01-26 | 泰豪科技(深圳)电力技术有限公司 | Lower door interlock and the ring main unit using the interlock |
| CN107610959A (en) * | 2017-11-01 | 2018-01-19 | 江苏南瑞帕威尔电气有限公司 | A kind of ring main unit earthing interlocking device |
| CN107946107A (en) * | 2018-01-02 | 2018-04-20 | 亚洲电力设备(深圳)股份有限公司 | The switchgear of interlock is equipped between a kind of Xiamen and earthing switch and disconnecting switch |
| CN208690159U (en) * | 2018-07-05 | 2019-04-02 | 泰豪科技(深圳)电力技术有限公司 | Interlocking mechanism and high-tension switch gear |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108899243A (en) | 2018-11-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4743715A (en) | Draw-in and draw-out mechanism of an electrical circuit breaker with main and auxiliary circuits | |
| CN108847605B (en) | Five-prevention interlocking device and handcart cabinet with same | |
| US7943873B2 (en) | Circuit breaker with locking mechanism | |
| EP2892069B1 (en) | Interlocking apparatus of transfer switch | |
| CN110400727A (en) | Breaker | |
| CN109637907A (en) | Miniature circuit breaker | |
| CN108630483B (en) | Five-prevention interlocking operating mechanism of medium-high voltage switch cabinet | |
| CN111477482A (en) | Plug-in circuit breaker | |
| CN211670129U (en) | Maintenance locking device of outdoor vacuum circuit breaker | |
| CN108899243B (en) | Interlocking mechanism and high-voltage switch equipment | |
| CN111192776A (en) | Mechanical interlocking device of isolating switch and circuit breaker | |
| CN108597939B (en) | Miniaturized isolator mechanism | |
| CN107293427B (en) | Interlocking device of grounding switch and front door and rear door | |
| CN113936939B (en) | Five-prevention interlocking device | |
| CN211507446U (en) | Mechanical interlocking device of isolating switch and circuit breaker | |
| CN211045329U (en) | Interlocking device of grounding switch and cabinet door and switch cabinet | |
| US20220406536A1 (en) | Plug-in circuit breaker | |
| CN211828660U (en) | Plug-in circuit breaker | |
| CN210897144U (en) | Circuit breaker | |
| CN111540652A (en) | Release force amplifying and resetting mechanism and circuit breaker | |
| CN219778733U (en) | Interlocking structure and switch cabinet using same | |
| CN213717452U (en) | Interlocking mechanism for draw-out type switch device and draw-out type switch device | |
| CN219017483U (en) | Interlocking device of upper isolation lower circuit breaker | |
| CN111477517A (en) | Plug-in circuit breaker | |
| CN111477508A (en) | Circuit breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |