CN2443513Y

CN2443513Y - Safety movable door device for movable switch cabinet

Info

Publication number: CN2443513Y
Application number: CN 00239653
Authority: CN
Inventors: 马兴国; 郑康铭; 张宁; 任碧华
Original assignee: NANYUE ELECTRIC APPLIANCES CO Ltd SHANTOU ECONOMIC SPECIAL ZONE
Current assignee: NANYUE ELECTRIC APPLIANCES CO Ltd SHANTOU ECONOMIC SPECIAL ZONE
Priority date: 2000-10-08
Filing date: 2000-10-08
Publication date: 2001-08-15
Anticipated expiration: 2010-10-08

Abstract

The utility model discloses a control device for a safety valve of a movable switch cabinet. The utility model comprises a valve, and two sets of connecting rod lifting mechanisms with same structures, wherein, the valve is driven by connecting rods to move from top to bottom along a nose pile to realize the opening and the closing of a contact box; the connecting rods are controlled by the lifting mechanisms; the lifting of the mechanisms for the connecting rods is realized mainly by a supporting plate which is arranged on a mounting plate through a rotating shaft; the rotation of the supporting plate is controlled mutually by a stepped shaft, a lock hook, and a supporting roller. The utility model has the advantages of high safety, simple operation, convenient detection and maintenance, and low cost.

Description

A kind of safety valve device of withdraw-type switch cabinet

The utility model belongs to a kind of withdraw-type switch cabinet controlling organization, relates in particular to the device that a kind of safety valve opens and closes.

China's utility model patent 97235246.5 discloses the withdraw type metal enclosed switchgear in a kind of interval, this patent has proposed handcart chamber mobile protective shade board elevation mechanism, by a left side, handcart bottom, the fixing inclined-plane projection in the right outside, utilize handcart to enter in the process of service position, act on the pulley on the sidewall of the indoor left and right sides of handcart, drivening rod, lifting arm rises, thereby up and down curtain plate is risen with lifting arm to be opened, following three-phase stationary contact headstock, when handcart withdraws from, lifting arm and connecting rod lose support, movable curtain plate closes because of deadweight descends to be closed, following three-phase stationary contact headstock, original use transom window formula overhead door existing problems have been solved, as the snap close intensity difference, fragile and cause problem such as handcart turnover difficulty, but because said structure is that only three-phase stationary contact headstock is sealed in utilization activity curtain plate deadweight decline, thereby exist maintenance, the attendant may cause the danger that gets an electric shock because of misoperation unlatching activity curtain plate.

The purpose of this utility model is structurally movable curtain plate hoisting mechanism to be improved at above-mentioned existing problems and a kind of safety valve device that has the automatic blocking function is provided, this device can guarantee that handcart is when breaking away from the handcart chamber, safety valve is in closes and blocking, under the prerequisite that does not have the unlocking state, safety valve can not open, guaranteed the maintainer overhaul, safety problem when safeguarding.

The purpose of this utility model is that also the safety valve device that is provided has the advantages that to control two valve simultaneously.

The utility model is achieved in that this device comprises safety valve and the identical linkage of two nested structures, wherein connecting

rod

16,18 are connected with valve 19, valve 19 is at connecting

rod

16,18 drive lower edge guide pillars 15 are done and are moved up and down, to realize that contact box 26 opens, close, be characterized in: a mounting panel 5 is fixed in the indoor sidewall of handcart 24 belows, mounting panel 5 is equipped with a supporting plate 8 by rotating shaft 10, connecting rod 16 is connected in mounting panel 5 by rotating shaft 17, its underpart slotted hole 28 is connected in supporting plate 8 rear portions by screw 23, be fixed with a multidiameter 11 on this subordinate side's supporting plate 8, top is hooked by torsion spring 20 and is linked on the mounting panel 5, support roller 9 also is equipped with in supporting plate 8 front portions, and supporting plate 8 below intermediate open positions jagged 7 ', mounting panel 5 is equipped with latch hook 3 by rotating shaft 6, latch hook 3 front portions are equipped with support roller 4 and are turned round down by torsion spring 21 and are linked on the mounting panel 5, and breach 7 ' opposite position is equipped with pinning 7 on latch hook 3 rear portions and the supporting plate 8.

For realizing second purpose of the utility model, in the such scheme, described guide pillar 15 also is provided with another valve 14 in valve 19 tops, this valve 14 is connected with connecting

rod

13,12, connecting rod 12 is arranged at mounting panel 5 and madial wall 24 gap locations, and connecting rod 12 front ends are connected with rotating shaft 10, and it is connected on the supporting plate 8 by screw 22 near mid portion, simultaneously, the below of connecting rod 12 is supported by above-mentioned multidiameter 11.

Fig. 1 is a kind of concrete enforcement structure chart of the utility model safety valve device;

Fig. 2 is the vertical view of Fig. 1;

Fig. 3 is that the A-A of Fig. 1 is to view.

Below in conjunction with accompanying drawing the utility model is described in further detail:

With reference to Fig. 1 and Fig. 3, this device comprises upper and

lower valve

14,19, is loaded on valve both sides guide pillar 15, and

valve

14,19 can be guide pillar 15 upper and lower moving, and moving by connecting

rod

13,12 and 18,16 of

valve

14,19 drives.

Connecting

rod

12 and 16 is by supporting plate 8 controls.Supporting plate 8, connecting rod 16, latch hook 3 are loaded on the mounting panel 5 by rotating

shaft

10,17,6 respectively, and supporting plate 8 10 rotation system is around the shaft determined by actings in conjunction such as latch hooks 3 in connecting rod 16, the rotating shaft 6 in the rotating shaft 17.

With reference to Fig. 3, mounting panel 5 is fixed in the indoor sidewall 24 of handcart, and the supporting plate 8 that is loaded on the mounting panel 5 has breach 7 ' in lower position, and support roller 9 also is equipped with in the front portion.Connecting rod 16 is divided into upper and lower two parts by rotating shaft 17, and its top is connected with connecting rod 18, is hooked by torsion spring 20 in the middle of the top, and torsion spring 20 other ends are linked on the mounting panel 5; One slotted hole 28 is arranged at the bottom, and this slotted hole is connected in supporting plate 8 rear sides by screw 23, and multidiameter 11 supports on the supporting plate 8 by being fixed in slotted hole 28 belows.Latch hook 3 by rotating shaft 6 also be divided into before and after two parts, support roller 4 is equipped with in the front portion, and is connected with torsion spring 21, torsion spring 21 other ends are loaded on the mounting panel 5, and the formation latch hook 3 front portions are had the effect turned round down, pinning 7 is equipped with at latch hook 3 rear portions.

With reference to Fig. 2, connecting rod 12 is arranged at mounting panel 5 and madial wall 24 gap locations, and its front end also is loaded on the mounting panel 5 by rotating shaft 10, and the rear end is connected with connecting rod 13, and mid portion is connected with supporting plate 8 by screw 22, and the below is supported by multidiameter 11.

Below be that example is described its course of work with this device device at switch cubicle:

With reference to Fig. 1, Fig. 3, this moveable high-voltage switchgear, when wherein handcart and handcart chamber are in the isolated location, on handcart is indoor, following

safety valve

14,19 all are in buttoned-up status, 3 pairs of supporting plates 8 of latch hook are in blocking, when being housed, circuit breaker cart enters in the test position process along guide rail 1, push pedal 2 at first acts on latch hook 3 anterior support rollers 4 on the handcart, when support roller 4 is promoted by push pedal 2 and when being held up, latch hook 3 is anterior goes up torsion spring 21 1 ends by a twisting force upwards, making pinning 7 produce one reverses downwards and breaks away from breach 7 ' on the supporting

plate

8,3 pairs of supporting plate 8 lockings of latch hook have been removed, on this moment, following

safety valve

14,19 still close fully, connecting rod (13,12), (18,16) be in poised state with supporting plate 8, when handcart continues along guide rail 1 in the progradation of service position, push pedal 2 promotes the supporting plate 8 anterior support rollers 9 of going up, and make supporting plate 8 10 clockwise rotate certain angle around the shaft, multidiameter 11 upwards acts on slotted hole below, connecting rod 16 bottom simultaneously on the supporting plate 8, thereby and make connecting rod 16 tops overcome torsion spring 20 upwards torsion and drivening rod 18 and down valve 19 move down along guide pillar 15 and open three-phase contact box 26 down, connecting rod 12 is under multidiameter 11 makes progress thrust, connecting rod 12 is anterior owing to be connected with axle 10, and make connecting rod 12 rear portions produce upwards active force and drivening rod 13 and go up valve 14 and move up and will go up three-phase fixed contact box 29 and open along guide pillar 15, while handcart upper contact head enters contact box and engages with fixed contact, and at this moment handcart has been located the service position.

When handcart when guide rail 1 withdraws from the handcart chamber, support roller 9 loses push pedal 2 supports on the supporting plate 8, supporting plate 8 automatically resets, connecting rod 16 bottom slotted hole parts also rotate around axle 17 because of losing multidiameter 11 supports, connecting rod 16 tops are hooked drivening rod 18 under torsion spring 20 reset responses and following valve 19 moves up along guide pillar, thereby close down three-phase fixed contact box 26; Connecting rod 12 also loses multidiameter 11 and supports, and under last valve deadweight effect, valve 14 is moved down along guide pillar 15, closes and closes three-phase fixed contact box 29; Latch hook 3 is anterior goes up support rollers 4 owing to lose push pedal 2 and support, and under torsion spring 21 downward twisting forces, pinning 7 be subjected to one upwards torsion and with supporting plate 8 on breach 7 ' interlock, thereby the realization locking.At this

moment connecting rod

12 and 16 has been in the lock state, promptly under 11 restrictions of supporting plate 8

screwings

22,23 and multidiameter and can not move, can not open thereby make upper and

lower safety valve

14,19 all be in blocking,, must first unlocking state be opened by upper and

lower valve

14,19 as true needs.

If in above-mentioned work, do not need the upper and lower safety valve of locking simultaneously, can be by taking off the

screw

22 or 23 that supporting plate and connecting rod link, then the automatic blocking function of corresponding valve just is cancelled.

The utility model also is applicable to the withdraw-type switch cabinet that is installed in other type, as metering cabinet, contact cabinet etc.

The utility model at first has following advantage in performance:

1. handcart enters when the operating position, and safety valve is opened fully, is convenient to dynamic and static contact Engage, and when the handcart push pedal broke away from the supporting plate support roller, valve was closed under torsion or Action of Gravity Field The static contact box, valve is closed fully when handcart retreats to testing position.

2. when handcart broke away from the handcart chamber, upper and lower safety valve was closed fully, and latch hook is also right simultaneously Supporting plate carries out locking automatically, is not having under the unlocking state, and safety valve can not be unlocked, Thereby effectively prevent the maintainer from when overhauling or safeguard, may open by mistake safety valve and lead Causing the danger that gets an electric shock takes place.

3. when handcart entered the interior testing position of cabinet, upper and lower safety valve was still closed fully, more just Detect or test in the Equipment Inspection personnel.

4. the locking of latch hook automatically realized when handcart withdraws from the handcart chamber when above-mentioned safety valve was closed, and latch hook to open also be that handcart realizes therefore having simple, convenient advantage when entering the handcart chamber automatically.

Secondly: the utility model architecture advances is simple, and the cost cost is lower.

Moreover: the device with upper and lower safety valve can be gone up different needs thereby can satisfy to use by the wherein a certain valve automatic blocking function of simple operations cancellation.

Claims

1. the safety valve device of a withdraw-type switch cabinet, this device comprises valve and the identical connecting rod hoisting mechanism of two nested structures, wherein connecting rod (16,18) be connected with valve (19), valve (19) is in connecting rod (16), (18) drive lower edge guide pillar (15) is done and is moved up and down, to realize that contact box (26) opens, close, it is characterized in that: a mounting panel (5) is fixed in the indoor sidewall of handcart (24) below, mounting panel (5) is equipped with a supporting plate (8) by rotating shaft (10), connecting rod (16) is connected in mounting panel (5) by rotating shaft (17), its underpart slotted hole (28) is connected in supporting plate (8) rear portion by screw (23), be fixed with a multidiameter (11) on this subordinate side's supporting plate (8), top is hooked by torsion spring (20) and is linked on the mounting panel (5), support roller (9) also is equipped with in supporting plate (8) front portion, and supporting plate (8) below intermediate open position jagged (7 '), mounting panel (5) is equipped with latch hook (3) by rotating shaft (6), latch hook (3) front portion is equipped with support roller (4) and is turned round down by torsion spring (21) and is linked on the mounting panel (5), and latch hook (3) rear portion and supporting plate (8) are gone up breach (7 ') opposite position pinning (7) is housed.

2. according to the safety valve device of claim 1, it is characterized in that, above-mentioned guide pillar (15) also is provided with another valve (14) in valve (19) top, this valve (14) is connected with connecting rod (13,12), connecting rod (12) is arranged at mounting panel (5) and madial wall (24) gap location, and connecting rod (12) front end is connected with rotating shaft (10), and mid portion is connected on the supporting plate (8) by screw (22), simultaneously, the below of connecting rod (12) is supported by above-mentioned multidiameter (11).