CN201498871U

CN201498871U - Lower interlocking mechanism of five-prevention interlocking device

Info

Publication number: CN201498871U
Application number: CN2009203090108U
Authority: CN
Inventors: 覃展现; 赵春风
Original assignee: Beijing Sojo Electric Co Ltd
Current assignee: Beijing Jieyuan Electric Co.,Ltd.
Priority date: 2009-08-27
Filing date: 2009-08-27
Publication date: 2010-06-02
Anticipated expiration: 2019-08-27

Abstract

The utility model relates to a lower interlocking mechanism of a five-prevention interlocking device, in particular to an interlocking device used for a vacuum load switch power distribution cabinet, aiming at providing the lower interlocking mechanism of the five-prevention interlocking device with the advantages of simple structure, convenient operation, good protection property and pure mechanical structure. The lower interlocking mechanism of the five-prevention interlocking device comprises a lower interlocking bracket, a bottom plate, interlocking shafts and an interlocking rod, wherein the lower interlocking bracket is fixedly installed on the bottom plate; a pair of interlocking shaft support seats is fixedly arranged under the bottom plate; the interlocking shafts are arranged inside through holes of the interlocking shaft support seats; the bottom plate arranged above the interlocking shafts is provided with a section of sliding groove; an interlocking rod is arranged on the interlocking shafts and positioned inside the sliding groove; pressure springs are sheathed on the interlocking shafts; the lower interlocking bracket is provided with a rope hole; and the interlocking rod comprises a front longitudinal interlocking rod, a rear longitudinal interlocking rod and a transverse interlocking rod, wherein the lower end of the front longitudinal interlocking rod penetrates through the lower interlocking bracket, and the lower end of the rear longitudinal interlocking rod penetrates through the lower interlocking bracket and the bottom plate.

Description

Interlocking device under the five-prevention interlocking device

Technical field

The utility model relates to a kind of interlock of electric equipment, particularly relates to a kind of interlock that is used for the vacuum load switch power distribution cabinet.

Background technology

In the high pressure assembled electric equipment, be called five anti-for the safeguard protection of isolating switch, vacuum contactor, vacuum circuit-breaker, metering handcart, cabinet door custom.As everyone knows, major loop is made of isolating switch, vacuum contactor and high-voltage load, in primary heat transport system, cabinet door, vacuum contactor and isolating switch must be carried out interlocking and could embody above-mentioned five anti-.Five anti-concrete intensions are: one, prevent on-load separating brake or combined floodgate; Two, prevent to divide by mistake, close isolating switch; False switching when three, preventing the earthed switch closure; Four, prevent charged mistiming splice grafting ground switch; Five, prevent the mistakenly entering into charged gap.And to realize five anti-must assurances: one, disconnect vacuum contactor earlier, disconnect isolating switch again, cause the high-voltage arc short circuit to prevent on-load disjunction isolating switch; Two, have only and disconnect the cabinet door that just can open the hyperbaric chamber behind the isolating switch, prevent that the staff is strayed into the electrification in high voltage gap and causes the accident; Three, when cabinet door open mode, do not allow to close isolating switch, avoid the introducing of high pressure and jeopardize personal safety.

Two kinds of structural measures are arranged at present, the one, position switches on isolating switch, reach the purpose that disconnects vacuum contactor when disconnecting isolating switch earlier, or on the cabinet door, high-voltage charge display device is installed, electromagnetic lock is installed, when in cabinet, high pressure being arranged like this on the door, display is bright, prompting has electricity, and cabinet door electromagnetic lock is by locking simultaneously, and the cabinet door can't be opened.The shortcoming of this design be required element expense higher, on the cabinet door, must offer the hole that is used for installing electrification display and electromagnetic lock, especially when the cabinet door is in opening, because electromagnetic lock is inoperative, also must take to pin the measure that isolating switch does not allow its combined floodgate.The 2nd, the branch of vacuum contactor, close the employing change over switch, the LWR change over switch as adopting industry generally to know carries out program control with procedure lock, this design can not be used the push-botton operation vacuum contactor, and need perforate to lock with installation procedure on the cabinet door, whole operation is loaded down with trivial details, and cost is also higher.

The utility model content

The technical problems to be solved in the utility model provide a kind of simple in structure, easy and simple to handle, protective is good, interlocking device under the five-prevention interlocking device of pure mechanical structure.

Interlocking device under the utility model five-prevention interlocking device, comprise interlock bracket down, base plate, interlocking shaft and blocking lever, described interlock bracket down is fixedly mounted on the base plate, floor below fixedly is equipped with a pair of interlocking shaft bearing, respectively have a through hole on the described interlocking shaft bearing, described interlocking shaft is arranged in the through hole of interlocking shaft bearing, the base plate of interlocking shaft top is provided with one section chute parallel with interlocking shaft, interlocking shaft is provided with a gangbar that makes progress, described gangbar is in above-mentioned chute and be between the interlocking shaft bearing, the upper end of gangbar is down between interlock bracket and the base plate, be set with stage clip on the described interlocking shaft, one end of described stage clip contacts with gangbar, the other end contacts with the interlocking shaft bearing at rear portion, be provided with the rope hole with the corresponding position of gangbar on the described interlock bracket down, vertical blocking lever before described blocking lever comprises, the back is blocking lever and horizontal blocking lever vertically, the two ends of described horizontal blocking lever are connected with the upper end vertical fixing of preceding vertical blocking lever with the vertical blocking lever in back respectively, interlock bracket is passed down in the lower end of vertical blocking lever before described, and interlock bracket and base plate are passed down in the described back vertically lower end of blocking lever.

Interlocking device under the utility model five-prevention interlocking device, one section guide pipe is equipped with in top, wherein said rope hole.

Interlocking device's difference from prior art is that interlocking device under the utility model five-prevention interlocking device adopts interlocking shaft and the gangbar induction installation as power distribution cabinet Xiamen body on off state under the utility model five-prevention interlocking device, and this induction installation passes to the on off state of power distribution cabinet Xiamen body the control device of vacuum load switch in the power distribution cabinet; Adopt the door lock of blocking lever as power distribution cabinet Xiamen body.Because interlocking device is pure mechanical structure under the utility model five-prevention interlocking device, simple in structure, cost is relatively low, the reliability height, and protective is good.

Below in conjunction with accompanying drawing interlocking device under the five-prevention interlocking device of the present utility model is described further.

Description of drawings

Fig. 1 is the rearview of interlocking device under the utility model five-prevention interlocking device;

Fig. 2 is the right view of interlocking device under the utility model five-prevention interlocking device;

Fig. 3 is the user mode front view of interlocking device under the utility model five-prevention interlocking device;

Fig. 4 is the user mode right view of interlocking device under the utility model five-prevention interlocking device;

Fig. 5 is a rearview of going up interlocking device among Fig. 3 and Fig. 4;

Fig. 6 is the rearview of platen among Fig. 3 and Fig. 4.

Embodiment

For the ease of understanding the architectural feature of the present utility model and the course of work, at first the dependency structure of power distribution cabinet is simply described, switch-box is equipped with on power distribution cabinet top, in the switch-box casing vacuum load switch is housed, the switching manipulation axle of vacuum load switch is corresponding with the handle hole on the switch-box casing, vacuum load switch has three stations, and order is combined floodgate, separating brake and ground connection successively.

As depicted in figs. 1 and 2, interlocking device comprises interlock bracket 2.1 down under the utility model five-prevention interlocking device, base plate 2.2, interlocking shaft 2.3 and blocking lever 2.4, following interlock bracket 2.1 is fixed together by the bolt and the base plate 2.2 at two ends, base plate 2.2 belows are welded with a pair of interlocking shaft bearing 2.5, respectively have a through hole on the interlocking shaft bearing 2.5, interlocking shaft 2.3 is through in the through hole of interlocking shaft bearing 2.5, have one section chute (not shown) parallel on the base plate 2.2 of interlocking shaft 2.3 tops with interlocking shaft 2.3, be connected with a gangbar that makes progress 2.6 on the interlocking shaft 2.3, gangbar 2.6 is in above-mentioned chute and be between the interlocking shaft bearing 2.5, the upper end of gangbar 2.6 is down between interlock bracket 2.1 and the base plate 2.2, be set with stage clip 2.7 on the interlocking shaft 2.3, the front end of stage clip 2.7 contacts with gangbar 2.6, the rear end contacts with the interlocking shaft bearing 2.5 at rear portion, have rope hole (not shown) with gangbar 2.6 corresponding positions on the following interlock bracket 2.1, one section guide pipe 2.8 is equipped with in top, rope hole, vertical blocking lever 2.41 before blocking lever 2.4 comprises, the back is blocking lever 2.42 and horizontal blocking lever 2.43 vertically, laterally the two ends of blocking lever 2.43 respectively with vertical welding the in upper end of the vertical blocking lever 2.42 of preceding vertical blocking lever 2.41 and back, interlock bracket 2.1 is passed down in the preceding vertically lower end of blocking lever 2.41, and interlock bracket 2.1 and base plate 2.2 are passed down in the back vertically lower end of blocking lever 2.42.

In conjunction with Fig. 3 to Fig. 6, the use of interlocking device on the utility model five-prevention interlocking device is described, on following interlock bracket 2.1 and base plate 2.2 the shroud upper panel 6 that is bolted to body top, power distribution cabinet Xiamen by two ends, interlocking shaft bearing 2.5 is passed down through shroud upper panel 6, have one section chute (not shown) that is complementary with base plate 2.2 upper hopper chutes on the shroud upper panel 6, shroud upper panel 6 is passed in the preceding vertically lower end of blocking lever 2.41, and being positioned at the top of power distribution cabinet Xiamen body 5 present position when closed, the back vertically lower end of blocking lever 2.42 is passed shroud upper panel 6 and is positioned at the below of shroud upper panel 6.

Last interlocking device 1 comprises supporting plate 1.1, first interlock plate 1.2, second interlock plate 1.3 and the 3rd interlock plate 1.4, first interlock plate 1.2, second interlock plate 1.3 and the 3rd interlock plate 1.4 are corrosion resistant plate, supporting plate 1.1 is installed in power distribution cabinet switch-box casing 3 outsides by the connecting plate 1.5 and the bolt at two ends, have lever operated hole 1.6 on the supporting plate 1.1, lever operated hole 1.6 is corresponding with the handle hole on the switch-box casing 3, first interlock plate 1.2, second interlock plate 1.3 and the 3rd interlock plate 1.4 are arranged on supporting plate 1.1 rears, and be connected with supporting plate 1.1 by the longitudinal sliding motion part, sliding part comprises pillar 8.1 and the vertical runner 8.2 that matches, one end of pillar 8.1 is welded on supporting plate 1.1 rear end faces, the other end is fixedly connected with baffle plate 8.3 by fastening bolt, have a vertical runner 8.2 on first interlock plate 1.2, have two vertical runners 8.2 on second interlock plate 1.3, have three vertical runners 8.2 on the 3rd interlock plate 1.4, first interlock plate 1.2, second interlock plate 1.3 and the 3rd interlock plate 1.4 are arranged between supporting plate 1.1 and the baffle plate 8.3, pillar 8.1 correspondences are arranged in the vertical runner 8.2, when first interlock plate 1.2 and second interlock plate 1.3 upwards slide into highest order, wherein one jiao of dead astern that is positioned at supporting plate 1.1 upper handle handle holes 1.6 on first interlock plate 1.2 and second interlock plate, 1.3 tops, the part that first interlock plate 1.2 exposes from 1.6 rears, lever operated hole makes operating grip can't insert the handle hole, the part that second interlock plate 1.3 exposes from 1.6 rears, lever operated hole makes operating grip not turn to the ground connection station from the separating brake station, when first interlock plate 1.2 and second interlock plate 1.3 slide down to lowest order, first interlock plate 1.2 and second interlock plate 1.3 leave the dead astern in lever operated hole 1.6, first interlock plate 1.2, also being equipped with respectively between second interlock plate 1.3 and the 3rd interlock plate 1.4 and the supporting plate 1.1 makes it slide into the return unit of highest order, return unit is extension spring 9, the upper end of extension spring 9 is fixedly connected on supporting plate 1.1 or the baffle plate 8.3, the lower end is fixed on first interlock plate 1.2, on second interlock plate 1.3 or the 3rd interlock plate 1.4, on second interlock plate 1.3 locking piece is housed, locking piece comprises sliding 10.1 and lockplate 10.2, sliding inner end 10.1 is fixedly connected on second interlock plate 1.3, the vertical locking chute 10.3 on the supporting plate 1.1 is passed in the outer end, lockplate 10.2 is welded on the front end face of supporting plate 1.1, and it is adjacent and parallel with locking chute 10.3, on the lockplate 10.2, following two ends and the outer end of sliding 10.1 have lockhole 10.4, locking piece makes second interlock plate 1.3 can be locked in highest order or lowest order, be provided with platen 4 directly over the 3rd interlock plate 1.4, platen 4 middle parts have through hole 4.1, sleeve pipe 4.2 fixedly is housed on the through hole 4.1, the handle hole that sleeve pipe 4.2 passes on the switch-box casing 3 is fixedlyed connected with vacuum load switch axle wherein, through hole 4.1 is corresponding with lever operated hole 1.6, the circumferential edge of platen 4 is three sections curve l1, l2 and l3, curve l1 is to be that center of circle radius is the circular arc of r1 with platen 4 centers, curve l3 is to be that center of circle radius is the circular arc of r3 with platen 4 centers, r1 is greater than r3, curve l2 is the transition arc of one section junction curve l1 and l3, and the circumferential edge of platen 4 contacts all the time with the top of the 3rd interlock plate 1.4.When curve l1 part contacted with the top of the 3rd interlock plate 1.4, vacuum load switch was in "on" position; When the part that is connected with l2 as curve l1 contacted with the top of the 3rd interlock plate 1.4, vacuum load switch was in gate-dividing state; When the part that is connected with l3 as curve l2 contacted with the top of the 3rd interlock plate 1.4, vacuum load switch was in ground state.

Be connected by the first interlocking wire rope core 7.1 between first interlock plate 1.2 and the gangbar 2.6, the first interlocking wire rope core 7.1 passes down the rope hole on the interlock bracket 2.1, be connected by the second interlocking wire rope core 7.2 between the 3rd interlock plate 1.4 and the blocking lever 2.4, the lower end of the second interlocking wire rope core 7.2 is connected with horizontal blocking lever 2.43, be with the first interlocking rope pipe, the 11.1 and second interlocking rope pipe 11.2 on the first interlocking wire rope core 7.1 and the second interlocking wire rope core 7.2 respectively, the upper end of the first interlocking rope pipe, the 11.1 and second interlocking rope pipe 11.2 is separately fixed at the lower end of first interlock plate 1.2 and the 3rd interlock plate 1.4, the lower end of the first interlocking rope pipe 11.1 is fixed on the guide pipe 2.8, the first interlocking wire rope core 7.1, the second interlocking wire rope core 7.2, the material of the first interlocking rope pipe, the 11.1 and second interlocking rope pipe 11.2 is plastics.

The interlocking process of interlocking device is summarized as follows under the utility model five-prevention interlocking device:

One, vacuum load switch is last inlet wire.

Vacuum load switch is in the ground connection station, power distribution cabinet Xiamen body 5 is closed, power distribution cabinet Xiamen body 5 promotes interlocking shaft 2.3 and moves backward, interlocking shaft 2.3 drives gangbar 2.6 and moves backward, simultaneously, the gangbar 2.6 pullings first interlocking wire rope core 7.1 moves downward, the first interlocking wire rope core 7.1 pulls down first interlock plate 1.2 to lowest order, stirring downwards then to slide makes 10.1 second interlock plate slide to lowest order 1.3 times, with sliding 10.1 and the lower end of lockplate 10.2 lock together, make lever operated hole 1.6 expose fully, after inserting operating grip, the rotation vacuum on-load switch is converted to the separating brake station by the ground connection station, platen 4 is along with vacuum load switch rotates, the part and the contacted state in the top of the 3rd interlock plate 1.4 that are connected with l3 by original curve l2, turn to part and the contacted state in the top of the 3rd interlock plate 1.4 that curve l1 is connected with l2, because r1 is greater than r3, therefore platen 4 is pushed into lowest order downwards with the 3rd interlock plate 1.4, the blocking lever 2.4 that links to each other with the 3rd interlock plate 1.4 moves down, vertical blocking lever 2.41 inserts in the power distribution cabinet Xiamen bodies 5 before making, power distribution cabinet Xiamen body 5 is locked, be rotated further vacuum load switch and be converted to the combined floodgate station by the separating brake station, platen 4 makes the 3rd interlock plate 1.4 remain on lowest order, power distribution cabinet Xiamen body 5 is still locked, at this moment, just can prevent personnel's mistakenly entering into charged gap.Again vacuum load switch is converted to the separating brake station by the combined floodgate station, though this moment, circuit disconnected, but the load end electromotive force is still higher, can produce injury to the person, and power distribution cabinet Xiamen body 5 is still locked under the synergy of platen 4, the 3rd interlock plate 1.4 and blocking lever 2.4, avoids the staff to enter.Continuation is converted to the ground connection station with vacuum load switch by the separating brake station, return unit extension spring 9 on platen 4 and the 3rd interlock plate 1.4 makes the 3rd interlock plate 1.4 upwards slide into a high position, move thereby drive on the blocking lever 2.4, vertical blocking lever 2.41 shifts out from power distribution cabinet Xiamen body 5 before making, extract operating grip, power distribution cabinet Xiamen body 5 can be opened the staff is entered, and when opening power distribution cabinet Xiamen body 5, interlocking shaft 2.3 travels forward under the effect of stage clip 2.7, first interlock plate 1.2 moves up to highest order under the effect of return unit extension spring 9, the top of first interlock plate 1.2 is positioned at 1.6 dead asterns, lever operated hole for one jiao, operating grip can not be inserted operate, prevent the mistake branch, close a floodgate.

Two, vacuum load switch is following inlet wire.

Releasing is to sliding the locking 10.1, second interlock plate 1.3 upwards slides into highest order under the effect of return unit extension spring 9, to slide then and lock together 10.1 with the lockhole 10.4 on lockplate 10.2 tops, make one jiao of dead astern that is positioned at lever operated hole 1.6 all the time of second interlock plate 1.3, limited operating grip and be converted to the ground connection station, avoided the generation of short circuit accident by the separating brake station.

Above-described embodiment is described preferred implementation of the present utility model; be not that scope of the present utility model is limited; under the prerequisite that does not break away from the utility model design spirit; various distortion and improvement that those of ordinary skills make the technical solution of the utility model all should fall in the definite protection range of the utility model claims.

Claims

1. interlocking device under the five-prevention interlocking device, it is characterized in that: comprise interlock bracket (2.1) down, base plate (2.2), interlocking shaft (2.3) and blocking lever (2.4), described interlock bracket (2.1) down is fixedly mounted on the base plate (2.2), a pair of interlocking shaft bearing (2.5) fixedly is equipped with in base plate (2.2) below, respectively have a through hole on the described interlocking shaft bearing (2.5), described interlocking shaft (2.3) is arranged in the through hole of interlocking shaft bearing (2.5), the base plate (2.2) of interlocking shaft (2.3) top be provided with one section with the parallel chute of interlocking shaft (2.3), interlocking shaft (2.3) is provided with a gangbar that makes progress (2.6), described gangbar (2.6) is positioned at above-mentioned chute and is between the interlocking shaft bearing (2.5), the upper end of gangbar (2.6) is positioned between following interlock bracket (2.1) and the base plate (2.2), be set with stage clip (2.7) on the described interlocking shaft (2.3), one end of described stage clip (2.7) contacts with gangbar (2.6), the other end contacts with the interlocking shaft bearing (2.5) at rear portion, described interlock bracket (2.1) down goes up and the corresponding position of gangbar (2.6) is provided with the rope hole, vertical blocking lever (2.41) before described blocking lever (2.4) comprises, the back is blocking lever (2.42) and horizontal blocking lever (2.43) vertically, the two ends of described horizontal blocking lever (2.43) are connected with the upper end vertical fixing of preceding vertical blocking lever (2.41) with the vertical blocking lever (2.42) in back respectively, interlock bracket (2.1) is passed down in the lower end of vertical blocking lever (2.41) before described, and interlock bracket (2.1) and base plate (2.2) are passed down in the described back vertically lower end of blocking lever (2.42).

2. interlocking device under the five-prevention interlocking device according to claim 1 is characterized in that: one section guide pipe (2.8) is equipped with in top, described rope hole.