CN109687299A - A kind of switchgear - Google Patents

Abstract

The present invention relates to a kind of switchgears, switchgear includes cabinet body frame and visiting on cabinet body frame and Xiamen is arranged in, it visits and is provided with door interlock up and down between Xiamen, interlock includes lock body, lock body is equipped with Xiamen touching structure and upper door catch, link mechanism is sequentially connected between Xiamen touching structure and upper door catch, it is touched positioned at Xiamen and is equipped with driving dog in the drive path between structure and upper door catch, interlock further includes that the push rod that can driving dog be pushed and be avoided open upper door catch when visiting and closing on visiting is arranged in, push rod is equipped with when Xiamen is closed with the cooperation of upper door catch locking and by the lockhole for locking of visiting, interlock further includes that the block reset spring for resetting driving dog being arranged on lock body and the upper door catch of driving and the lockhole when Xiamen is opened that are arranged on lock body are detached from Lock pin resetting-mechanism, prevent omit generate mistakenly entering into charged cable vault operation, ensure that the reliability and safety in operating process.

Description

A kind of switchgear

Technical field

The present invention relates to a kind of switchgears.

Background technique

Medium voltage switchgear equipment is metal armoured structure, and Medium Voltage Switchgear latter half is cable vault, first device of cable vault Part is to be fixedly mounted, when carrying out maintenance and attended operation to switchgear, mainly for its cable vault, in the case where often charging Back door is opened, mistakenly entering into charged isolation, this does not meet five anti-requirements of medium voltage switchgear equipment, and common interlocking method is by connecing Ground switch and rear gate interlock；And because the volume of medium voltage switchgear equipment is larger, back door, which is generally divided into, visits and Xiamen two parts, and people Often only design and interlocked between earthing switch and Xiamen, and have ignored the protection visited, there are some potential safety problemss.

The design method that switchgear is visited in industry at present is in the premise for considering that intensity prevents internal arcing failure injury Under, the basic fixed form using fastening screw on sealing plate of visiting of switchgear, this mounting means is after removable screw, Xiamen It does not constrain visiting, can open in any condition, very big security risk is brought to operation, the maintenance of switchgear.For Meet five anti-requirements, when needing to design a kind of Xiamen and being not switched on, visiting can not be opened；It visits when being not turned off, Xiamen can not close The interlock closed.

Summary of the invention

The purpose of the present invention is to provide a kind of switchgears, to solve not having between switchgear upper-lower door in the prior art The problem of reciprocal interlocking.

To achieve the above object, the technical solution of switchgear of the present invention is:

Scheme 1: including cabinet body frame and visiting on cabinet body frame and Xiamen is arranged in switchgear, it is described visit with Xiamen it Between be provided with door interlock up and down, upper and lower door interlock includes lock body, and Xiamen touching is provided on lock body and structure and is visited Lock pin is sequentially connected with link mechanism between Xiamen touching structure and upper door catch, is additionally provided on the lock body positioned at Xiamen The driving dog in the drive path between structure and upper door catch is touched, the door interlock up and down further includes being arranged upper Driving dog can be pushed open when visiting and closing and avoid upper door catch by the push rod on door, the push rod, the Xiamen touching knot Structure has in the stopper section while being not turned off with the only cooperation of Xiamen shelves of visiting, be provided on the push rod when Xiamen is closed with visit Lock pin locking cooperates the lockhole for locking of visiting, and the door interlock up and down further includes being arranged on lock body to be used to pass The block reset spring that dynamic block resets, the door interlock up and down further include the drive when Xiamen is opened being arranged on lock body The lock pin resetting-mechanism that dynamic upper door catch and the lockhole are detached from.

Scheme 2: on the basis of scheme 1, the lock body includes bracket, is provided on the bracket for placing transmission gear The holding tank of block is provided with mounting hole on the cell wall of the holding tank, and the upper door catch is installed in mounting hole and can hold Slot of receiving is interior to be moved along mounting hole axial reciprocating.

Scheme 3: on the basis of scheme 2, the bracket is the plate structure of " oneself " font, and the holding tank is by bracket Lower half slot is constituted, and the mounting hole penetrates through the horizontal edge of bracket along the vertical direction, and the lock pin resetting-mechanism is set to the appearance It receives in the upper half slot of slot.

Scheme 4: on the basis of scheme 3, the upper door catch is driven by link mechanism and appearance can be stretched to by moving down It receives in slot, the lock pin resetting-mechanism includes that answering in the slot of the upper half for applying upward active force to upper door catch is arranged in Position spring.

Scheme 5: on the basis of scheme 4, there are two the reset springs, sets up separately in the two sides of upper door catch.

Scheme 6: on the basis of scheme 3, the block back-moving spring top is set to the downside of driving dog and the bracket Between wall.

Scheme 7: on the basis of scheme 3, the link mechanism includes the transmission levers being arranged on lock body, the transmission Drive rod, the output end of Suo Oushu transmission levers mechanism and institute are connected between the input terminal of lever and Xiamen touching structure State door catch transmission cooperation.

Scheme 8: on the basis of scheme 7, there are two the brackets, is disposed side by side on the two sides of the drive rod, described There are two lever mechanisms, and the gear pin assembled together with the input terminal of two lever mechanisms is provided on the drive rod.

Scheme 9: on the basis of scheme 7, the lock body further includes the support plate for being connected on cabinet body frame, described The perforation being guided through along the vertical direction for drive rod is provided in support plate.

Scheme 10: on the basis of scheme 9, Xiamen touching structure include be rotatably arranged in support plate by Xiamen The connecting lever of driving and rotation, the stop section is the idler wheel being arranged on the input terminal of connecting lever.

The beneficial effects of the present invention are: compared with the prior art, switchgear according to the present invention, in door-closing operation, It first closes and visits, driving dog evacuation is pushed by push rod, then close Xiamen, Xiamen touches structure movement, pushes connecting rod machine Structure, and then push upper door catch to be inserted into lockhole and cooperate with push rod locking, realize the door-closing interlock of upper-lower door；It is beaten if visiting Open, first close Xiamen, since the block of driving dog acts on, upper door catch can not be continued to move to, therefore Xiamen touching structure without Method movement, then can not close Xiamen；In opening door operation, Xiamen is first opened, then structure is touched without touching in Xiamen, then answers in lock pin Drive upper door catch by deviating from lockhole under the action of the mechanism of position, realization unlock is then i.e. openable to visit, and realizes the behaviour that opens the door Make, finally driving dog is reset in the movement routine of upper door catch by block reset spring；If Xiamen is closed, first open Door leads to push rod locking, then can not open and visit, realize upper-lower door then due to the locking cooperation between upper door catch and lockhole Two-way interlocking；Principle is fairly simple, prevents from omitting the operation of generation mistakenly entering into charged cable vault, improves five anti-interlocks, promoted The security performance of product ensure that the reliability and safety in operating process.

Detailed description of the invention

Fig. 1 is one embodiment perspective view of switchgear of the present invention；

Fig. 2 is the rearview of Fig. 1；

Fig. 3 is the front view of Fig. 2；

Fig. 4 is the fit structure schematic diagram of the present invention or more door interlock and upper-lower door；

Fig. 5 is upper door closure state figure in Fig. 4；

Fig. 6 is lower door closure state figure in Fig. 5；

Fig. 7 is the state diagram that Xiamen touches without power transmission cooperation between structure and upper door catch in Fig. 3；

Fig. 8 is the state diagram that power transmission cooperation between structure and upper door catch is touched in Xiamen in Fig. 3；

Fig. 9 is the structural schematic diagram of bracket 1 in Fig. 3；

Figure 10 is the right view of Fig. 9；

Figure 11 is the top view of Fig. 9；

Figure 12 is the structural schematic diagram of levers support plate 16 in Fig. 3；

Figure 13 is the right view of Figure 12；

Figure 14 is the structural schematic diagram of upper door catch 14 in Fig. 3；

Figure 15 is the structural schematic diagram of drive rod 5 in Fig. 3；

Figure 16 is the structural schematic diagram of push rod 10 in Fig. 3；

Figure 17 is the structural schematic diagram of driving dog 2 in Fig. 3；

Figure 18 is the structural schematic diagram of lever plate 15 in Fig. 3；

Figure 19 is the structural schematic diagram of connecting lever 4 in Fig. 4；

Figure 20 is the structural schematic diagram of pressing plate 12 in Fig. 3；

Figure 21 is the supporting structure schematic diagram of second embodiment of switchgear of the present invention；

Figure 22 is the structural schematic diagram of the resetting-mechanism in the third embodiment of switchgear of the present invention.

Specific embodiment

Embodiments of the present invention are described further with reference to the accompanying drawing.

The specific embodiment of switchgear of the invention, as shown in fig. 1 to figure 20, the switchgear include cabinet body frame and setting Visit 9 and Xiamen 8 on cabinet body frame are connected with the horizontal support plate 3 between upper-lower door, and upper-lower door on cabinet body frame Between be provided with interlock 17, interlock 17 include be arranged in visit 9 inboard two extend back and spaced Push rod 10, the corresponding position on two push rods 10 are provided with the lockhole 18 extended up and down, which is long hole, and push rod 10 is L The trigger structure of shape, stile, which is fixed on, visits on 9, and horizontal edge extends back and the lockhole 18 is arranged thereon.

Interlock 17 further includes the bracket 1 being arranged in support plate 3, and bracket 1 is hardened structure of the section at " oneself " font, The mounting hole 103 extended up and down is provided on the middle transverse slat of its " oneself " font, mounting hole 103 is to be less than the consistent length of lockhole 18 greatly Pore structure, the lower half slot of S-shaped are holding tank 102, and the opening direction of holding tank 102 is additionally provided with and wears on bracket 1 before It is mating to stretch to the upper door catch 14 in holding tank 102 to fill hole 103, is located at upper door lock in holding tank 102 accordingly It is provided with driving dog 2 on the grafting path of pin 14 and mounting hole 103, above-mentioned push rod 10 can be with biography when visiting 9 closing Dynamic 2 pushing tow of block cooperation, and driving dog 2 is removed, and after driving dog 2 is removed, lockhole 18 on above-mentioned push rod 10 with Mounting hole 103 is opposite, presses between driving dog 2 and the slot bottom of holding tank 102 and is provided with reset spring 21, on driving dog 2 It is provided with the limit pin shaft 22 being arranged for reset spring, the slot bottom of holding tank 102 is provided with the limit hole for limit pin shaft insertion 101, the rear end of limit pin shaft is provided with the stop nut for preventing limit pin shaft from deviating from out of slot bottom mounting hole.

Upper door catch 14 can be extended downwardly by the driving of Xiamen touching structure to holding tank 102, and structure is touched in Xiamen Output end is connected with longitudinal mandril 5 i.e. drive rod being threaded through in support plate 3, further includes being fixed at 3 upside of support plate Transmission levers, transmission levers include levers support plate 16 and the lever plate 15 for being rotatably arranged on 16 upper end of levers support plate, thick stick The both ends of bar plate 15 are provided with the lever long hole 151 extended along 15 length direction of lever plate, and the mandril 5 passes through the upper end The gear pin 51 in portion and one of lever long hole are mating in the horizontal direction, another lever long hole is visited with above-mentioned The pin shaft of the upper end setting of lock pin 14 is mating in the horizontal direction, and it further includes being articulated in support plate 3 that structure is touched in Xiamen The rotation direction of connecting lever 4, connecting lever 4 is horizontally extending, the lower end of mandril 5 be provided with for connecting lever 4 one end laterally insert The other end of the spliced eye 52 entered, connecting lever 4 extends towards front lower place, and end is provided with idler wheel 6, for cooperating with 8 pushing tow of Xiamen, It when Xiamen 8 is closed, drives idler wheel 6 to lower swing, and then the other end of connecting lever 4 is driven to be swung up, connecting lever 4 drives mandril 5 It moves up, under the action of lever mechanism, upper door catch 14 is pushed, and then upper door catch 14 is driven to stretch to lockhole 18 It is interior, realize the locking of interlocking mechanism.

Above-mentioned levers support plate 16 is L shaped plate, and bottom edge 163 is fixed on the upside of middle beam, is arranged on stile 162 The mounting hole 161 for thering is lever plate 15 to be rotatablely installed by pin shaft.

It is additionally provided between upper door catch 14 and bracket 1 for moving up the application of upper door catch 14 with de- with lockhole 18 From resetting-mechanism, the upper half slot of bracket 1 constitutes the mounting groove 104 for installing resetting-mechanism, in the upper slot of mounting groove 104 Wall is provided with the long guiding hole 106 passed through for upper door catch 14 corresponding with mounting hole 103, and door catch 14 is T-shaped plate knot on this Structure, the upper end 141 of upper door catch 14 are provided with the pin shaft hole with 15 grafting of lever plate, and lower end 142 is for stretching to receiving In slot 102, resetting-mechanism includes the top pressure spring 11 of the vertically extending setting in mounting groove 104, and there are two divide for top pressure spring 11 The two sides of upper door catch 14 are not set, resetting-mechanism further includes the locating rod 13 extended up and down being arranged for top pressure spring 11, The lower end of locating rod 13 is fixed on the intermediate transverse slat of bracket 1, and the upper end sleeve integrating of two locating rods 13 is equipped with pressing plate 12, pressing plate Corresponding position be provided with locating rod mounting hole 122, the upper end of locating rod 13 stretches out in the location hole of the upper surface setting of bracket 1 105, offer the pressing plate long hole being inserted into for the T shape lower half of upper door catch 14 along the vertical direction in the middle position of pressing plate 12 121, the size of the pressing plate long hole 121 is less than 141 size of the upper half of the T shape of upper door catch 14.After Xiamen 8 is opened, Xiamen Structure is touched without power is touched, then upper door catch 14 pushes pressing plate 12 to move up under the action of top pressure spring 11, then pushes Upper door catch 14 moves up, the separation of door catch 14 and lockhole 18 in realization.

In the present embodiment, there are two brackets 1, is arranged at intervals on the two sides of mandril 5, corresponding lever mechanism also there are two, The lever plates 15 of two lever mechanisms cooperates with same 5 power transmission of mandril simultaneously, meanwhile, above-mentioned push rod 10 also there are two.

Plate 7 is hit for pushing to roll to lower swing when Xiamen 8 is closed being fixed on Xiamen 8, the section for hitting plate 7 is in U-shaped, the length of U-shaped two-arm can guarantee the rotation amplitude of connecting lever 4 when Xiamen 8 is closed.

Working principle: it when carrying out door-closing operation using the upper and lower door interlock 17, first closes and visits 9, push rod 10 pushes away Dynamic driving dog 2 moves backward, and the lockhole 18 on rear push-rod 10 is corresponding with mounting hole 103, and Xiamen 8 is not turned off at this time, on Then door catch 14 closes Xiamen 8 since the effect of top pressure spring 11 keeps up mobile trend, hit plate 7 and drive driving Idler wheel 6 is to lower swing, so that the other end of connecting lever 4 is swung up that mandril 5 is driven to move up, 5 activation lever plate of mandril 15 rotations, so that upper door catch 14 overcomes the active force of top pressure spring 11 and is downwardly into realizing locking in lockhole 18, It ensure that visit and 9 be locked；It is installed if being not turned off when visiting 9 and directly closing Xiamen 8 at this time since driving dog 2 is not removed Hole 103 is kept off, then the upper door catch 14 moved down under the effect of mandril 5 just can not continue to move after pressing to driving dog 2 Dynamic, so that connecting lever 4 can not continue to rotate, Xiamen 8 can not reach shutdown position, cause Xiamen 8 that can not close.

When carrying out opening door operation using the upper and lower door interlock 17, Xiamen 8 is first opened, mandril 5 is without upward at this time Driving force, under the Gravitative Loads of top pressure spring 11 and mandril 5, lever plate 15 is rotated backward, and then mandril 5 is driven to move down, on Door catch 14 moves up, and separates with lockhole 18, and interlock 17 unlocks at this time, can directly open and visit 9, and push rod 10, which removes, to be held It receives slot 102, while driving dog 2 returns to original position under the action of reset spring, realizes opening door operation；If in the case where being not switched on It is first opened before door 8 and visits 9, cooperated at this time due to upper door catch 14 with 18 locking of lockhole, visiting 9 is locked, at all can not be direct It opens.

Second embodiment of switchgear of the invention, in the case where the other structures of one embodiment are constant, branch Frame also can be made E shape as shown in figure 21, it is only necessary to guarantee the opening direction of holding tank towards push rod, or directly It is formed together by folded be located at of two plates with the horizontally extending U-lag that is open.

The third embodiment of switchgear of the invention, in the case where the other structures of one embodiment are constant, branch Frame can be as shown in figure 22, and bracket is set as only having the U-shaped structure of holding tank, and resetting-mechanism is directly installed on the upper end of bracket.

4th embodiment of switchgear of the invention, in the case where the other structures of one embodiment are constant, no Connecting lever, the vertical guiding movement in support plate of mandril 5 are set, and the grafting long hole extended up and down is set in the lower end of mandril 5, Corresponding position setting and the mating inserted block of grafting long hole of Xiamen, the upper surface of inserted block are rear low preceding high domatic structure, It in the closing process of Xiamen, is constantly inserted by inserted block in the grafting long hole of mandril, so that mandril constantly moves up, and then pushing tow Upper door catch is acted.

In other embodiments, it is hinged with connecting lever link mechanism can be set to input terminal, output end directly with upper door lock Hinged connection rod structure is sold, lock body is swung to the upside that connecting rod is arranged at this time, the interlocking of upper-lower door equally may be implemented.

In other embodiments, in the case where the other structures of one embodiment are constant, interlocking mechanism is equally applicable to In the cabinet body structure of left and right opening door；One bracket can be only set, and reset spring can directly be set in the T shape lower half of door catch Portion.

Claims (10)

1. including cabinet body frame and visiting on cabinet body frame and Xiamen is arranged in switchgear, described visit sets between Xiamen It is equipped with door interlock up and down, it is characterised in that: upper and lower door interlock includes lock body, and touching structure in Xiamen is provided on lock body With upper door catch, it is sequentially connected with link mechanism between Xiamen touching structure and upper door catch, is additionally provided with position on the lock body The driving dog in the drive path between structure and upper door catch is touched in Xiamen, the door interlock up and down further includes setting The push rod on visiting is set, driving dog can be pushed open when visiting and closing and avoid upper door catch by the push rod, the Xiamen Touching structure has the stopper section only cooperated when visiting and being not turned off with Xiamen shelves, is provided on the push rod when Xiamen is closed Cooperate with upper door catch locking by the lockhole for locking of visiting, the door interlock up and down further includes the use being arranged on lock body In the block reset spring for resetting driving dog, the door interlock up and down further includes that beating on lock body in Xiamen is arranged in The lock pin resetting-mechanism for driving upper door catch and the lockhole to be detached from when opening.

2. switchgear according to claim 1, it is characterised in that: the lock body includes bracket, is provided on the bracket For placing the holding tank of driving dog, mounting hole is provided on the cell wall of the holding tank, the upper door catch is installed on It can move in dress hole and in holding tank along mounting hole axial reciprocating.

3. switchgear according to claim 2, it is characterised in that: the bracket is the plate structure of " oneself " font, described Holding tank is made of the lower half slot of bracket, and the mounting hole penetrates through the horizontal edge of bracket along the vertical direction, and the lock pin resets machine Structure is set in the upper half slot of the holding tank.

4. switchgear according to claim 3, it is characterised in that: the upper door catch by link mechanism drive and to moving down It is dynamic to stretch in holding tank, the lock pin resetting-mechanism include be arranged in the slot of the upper half for upper door catch apply to The reset spring of upper active force.

5. switchgear according to claim 4, it is characterised in that: there are two the reset springs, sets up separately in upper door catch Two sides.

6. switchgear according to claim 3, it is characterised in that: the block back-moving spring top is set to driving dog and institute It states between the downside wall of bracket.

7. switchgear according to claim 3, it is characterised in that: the link mechanism includes the transmission being arranged on lock body Lever is connected with drive rod, the even book transmission levers machine of institute between the input terminal of the transmission levers and Xiamen touching structure The output end of structure and the upper door catch transmission cooperate.

8. switchgear according to claim 7, it is characterised in that: there are two the brackets, is disposed side by side on the transmission The two sides of bar, there are two the lever mechanisms, is provided on the drive rod and assembles together with the input terminal of two lever mechanisms Gear pin.

9. switchgear according to claim 7, it is characterised in that: the lock body further includes for being connected to cabinet body frame Support plate, be provided with the perforation being guided through along the vertical direction for drive rod in the support plate.

10. switchgear according to claim 9, it is characterised in that: the Xiamen touching structure includes being rotatably arranged on branch The connecting lever for being driven and being rotated by Xiamen on fagging, the stop section is the idler wheel being arranged on the input terminal of connecting lever.