10kV floor type handcart solid-sealed vacuum circuit breaker

Abstract

The utility model provides a 10kV floor type handcart solid-sealed vacuum circuit breaker, which comprises a circuit breaker body and a rack, and is characterized in that the circuit breaker body is a central circuit breaker and adopts a solid-sealed pole; the solid-sealed pole is provided with an upper wire outlet seat and a lower wire outlet seat, the upper wire outlet seat is connected with an L-shaped copper bar, and the lower wire outlet seat is connected with an L-shaped copper bar; a chassis truck is connected below the circuit breaker body and is provided with a limiting plate; the rack is provided with a fixing frame, and the limiting plate is connected with the fixing frame in a sleeved mode so that the chassis can be connected with the rack. The circuit breaker mechanism and the interlocking device are verified mature schemes, so that the stability of the device is ensured, and the tedious process and high cost of verifying mechanical and electrical characteristics in designing a brand-new floor type circuit breaker are avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of medium and high voltage switch, specifically relates to a 10kV floor type handcart fixed sealing vacuum circuit breaker. BACKGROUND

[0002] In the field of medium and high voltage power transmission and distribution, the application of switch cabinet is very wide, and the circuit breaker is an important switching element in the switch cabinet. As an important element of the switch cabinet, the circuit breaker controls the on-off of the high voltage system and is a very important control protection equipment. The vacuum circuit breaker is suitable for frequent operation under the rated working current or multiple breaking of short-circuit current.

[0003] The existing medium and high voltage vacuum circuit breaker can be divided into the middle type and the floor type according to the different cabinet structure. CN207588335U discloses a floor type circuit breaker handcart. Due to the limitation of technology, the circuit breaker is generally in the form of floor type and non-fixed sealing, and the "five prevention interlocking" and other electrical interlocking devices are arranged outside the circuit breaker case, which has the defects of complex transmission and unreliable interlocking device. At the same time, due to the incomplete industry standard, the pole distance of the circuit breaker produced by different manufacturers is quite different.

[0004] The rated voltage of the existing floor type circuit breaker is mostly 35kV, and there are very few 10kV fixed sealing vacuum circuit breaker products. However, based on the demand of some customers and the requirement of improving the completeness of product line, it is necessary to make technical reserve for the design scheme of 10kV floor type fixed sealing vacuum circuit breaker. However, the overall market demand of such products is small, and the design of new floor type circuit breaker and its production and quality inspection tooling to respond to the specific customer demand will greatly increase the product cost, and the completely offline production, installation and quality inspection will cause waste of manpower and material resources. INVENTION CONTENTS

[0005] In order to make up for the deficiency of the prior art, the utility model provides a 10kV floor type handcart fixed sealing vacuum circuit breaker. In order to realize the technical effect of the utility model, the specific technical scheme is introduced as follows:

[0006] A 10kV floor type handcart fixed sealing vacuum circuit breaker, comprising a circuit breaker body and a rack,

[0007] The circuit breaker body is a middle type circuit breaker, and the circuit breaker body adopts a fixed sealing pole; the fixed sealing pole is provided with an upper outgoing line seat and a lower outgoing line seat, the upper outgoing line seat is connected with an L-shaped copper bar, and the lower outgoing line seat is connected with an L-shaped copper bar;

[0008] The circuit breaker body is connected with a chassis car below, the chassis car is provided with a limiting plate; the rack is provided with a fixed frame, and the limiting plate and the fixed frame are sleeved to realize the connection of the chassis car and the rack;

[0009] The top plate is provided above the rack, and a plug interlocking device, a movable plug and a static socket are provided above the top plate.

[0010] The rack is provided with a moving frame, and the moving frame is provided with moving wheels.

[0011] The rack is provided with a positioning limiting device and an anti-toppling limiting device.

[0012] The circuit breaker body is provided with a matched switch cabinet, and the circuit breaker body is provided with a detachable grounding device; the detachable grounding device comprises a detachable grounding copper braid grounding device between the circuit breaker body and the fixed frame and a screw grounding device between the fixed frame and the switch cabinet.

[0013] An aluminum rod pad is arranged between the upper outgoing line seat and the L-shaped copper bar, and an aluminum rod pad is arranged between the lower outgoing line seat and the L-shaped copper bar.

[0014] The horizontal part of the L-shaped copper bar is provided with a vertical support rod, one end of the support rod is connected with the horizontal part of the L-shaped copper bar, and the other end of the support rod is connected with the rack.

[0015] The positioning limiting device is an alternately installed positioning limiting plate arranged on the rack and the switch cabinet.

[0016] The positioning limiting plate can realize that when the floor-type circuit breaker is adaptively installed with the switch cabinet, the positioning limiting plate arranged on the rack and the switch cabinet does not collide and interfere with each other, and the floor-type circuit breaker can adapt to the corresponding switch cabinet.

[0017] The anti-toppling limiting device is an anti-toppling limiting plate arranged on the rack, and the switch cabinet is provided with a matched anti-toppling sliding groove.

[0018] The anti-toppling limiting plate and the anti-toppling sliding groove can limit the angle range of the floor-type circuit breaker when moving into the switch cabinet.

[0019] The moving frame is provided with a flap push plate, and the flap push plate can push open the switch cabinet door when the floor-type circuit breaker enters the switch cabinet.

[0020] The limiting plate is provided with a telescopic adjusting mechanism, and the limiting plate repeatedly realizes the connection and disconnection between the limiting plate and the fixed frame through the telescopic adjusting mechanism.

[0021] The chassis trolley is provided with a chassis trolley handle, a chassis trolley crank, a chassis trolley crank hole, and a chassis trolley screw rod matched with the chassis trolley crank hole.

[0022] The telescopic adjusting mechanism is arranged between the bottom car handle and the limiting plate, and the bottom car handle can be repeatedly connected with and separated from the fixed frame through adjustment.

[0023] The plug interlocking device comprises a plug limiting plate, a pin, a blocking piece, a positioning frame, an I-shaped screw, an I-shaped nut, a torsional spring, a split pin, a limiting flat washer, a II-shaped screw, a II-shaped nut, and a support piece.

[0024] The plug limiting plate and the support piece are provided with screw holes matched with the II-shaped screw; the support piece and the positioning frame are provided with through holes matched with the pin; the positioning frame is provided with a screw hole matched with the I-shaped screw; the pin is provided with a through hole matched with the split pin; and the plug limiting plate and the support piece are connected through the II-shaped screw and the II-shaped nut.

[0025] The support piece and the positioning frame are connected by inserting the pin into the matched through holes, and the pin is fixed at both ends by the blocking piece after being inserted into the through holes; the pin is provided with the torsional spring and the limiting flat washer, the split pin is inserted into the through hole of the pin to limit the limiting flat washer and the torsional spring, and the torsional spring is limited by the II-shaped screw, the II-shaped nut, the I-shaped screw and the I-shaped nut.

[0026] The positioning frame is fixed to the upper surface of the top plate.

[0027] Beneficial effects

[0028] The utility model provides a kind of 10kV floor type handcart fixed sealing vacuum circuit breaker, and the technical scheme of the vacuum circuit breaker is adaptively adjusted and improved on the basis of existing mature middle-mounted circuit breaker technical scheme, and a kind of floor type fixed sealing vacuum circuit breaker technical scheme with overall integrity is proposed.Compared with prior art, the beneficial effects of the technical scheme are:

[0029] 1) the utility model is adaptively adjusted and improved on the basis of existing mature middle-mounted circuit breaker technical scheme, and the function of floor type is realized by adaptingly setting rack for 10kV middle-mounted circuit breaker.

[0030] The technical scheme enables floor type circuit breaker to be produced on mature middle-mounted circuit breaker production line, and the equipment, tooling for production and quality inspection are universal with existing mature production scheme; the problem that new floor type circuit breaker and its production and quality inspection tooling must be designed to respond to the needs of a small part of customers is solved, production cost can be greatly reduced on the basis of meeting the needs of part of customers and improving product line completeness;

[0031] Meanwhile, the circuit breaker mechanism and interlocking device part is a proven mature solution; both ensure the stability of the device, also avoid the design of new floor type circuit breaker need to verify the mechanical and electrical characteristics of the cumbersome process and high cost;

[0032] 2) In the prior art, the floor type circuit breaker is moved between the test position and the working position in the form of a push mechanism, the chassis vehicle drives the rack to move, which is convenient to install and can save cost;

[0033] 4) In the prior art, the 10kV circuit breaker mostly uses non-sealed pole column, and the pole column inter-pole distance size of different manufacturers is different, and cannot be exchanged between products of different manufacturers. The utility model adopts a sealed pole column, and L-shaped copper bars are installed at the upper and lower outlet seats, according to the different inter-pole distances, only the length of the copper bar needs to be changed to realize it, the performance is better, at the same time, the general sealed pole column size in the industry is selected, and the design of non-standard products is avoided;

[0034] 5) In the prior art, the traditional floor type circuit breaker needs to adjust the type and position of the corresponding grounding row according to the grounding mode of the switch cabinet, and the grounding modes of switch cabinets produced by different manufacturers are quite different, and cannot meet the requirements of standardized production. The utility model adopts a special copper braid grounding mode, and the copper braid is used to realize the contact between the circuit breaker, the rack and the switch cabinet body, and realizes the exchange between different grounding modes;

[0035] 6) The utility model adopts a simple and reliable plug interlocking device, when the circuit breaker moves between the working position and the test position, the plug cannot fall off and be pulled out, and the safety of the working process can be improved.

[0036] 7) In the case that there are many switch cabinets on site, the circuit breakers in different switch cabinets cannot be replaced, at this time, the supplement and replacement of the circuit breaker may not match the switch cabinet, resulting in that the switch cabinet cannot work or even accidents occur. The utility model adopts a limiting device which is easy to install, disassemble and replace, realizes the function that the circuit breaker can only cooperate with the matched switch cabinet, can simplify the work flow and improve the safety of the working process. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 is one of the total assembly schematic views of the utility model;

[0038] Figure 2 is the second total assembly schematic view of the utility model;

[0039] Figure 3 is a circuit breaker limiting device schematic view;

[0040] Figure 4 is one of the chassis vehicle and fixed frame installation schematic views;

[0041] Figure 5 is the second installation schematic diagram of the chassis vehicle and the fixed frame

[0042] Figure 6 is the third installation schematic diagram of the chassis vehicle and the fixed frame

[0043] Figure 7 is the schematic diagram of the secondary plug interlocking device

[0044] Figure 8 is the working schematic diagram of the secondary plug interlocking device

[0045] The figures are identified as follows:

[0046] 1. The solid-enclosed pole;

[0047] 2. Aluminum rod pad;

[0048] 3. L-shaped copper bar;

[0049] 4. L-shaped copper bar;

[0050] 5. Contact;

[0051] 6. Nylon support rod;

[0052] 7. Angle plate;

[0053] 8. Valve push plate;

[0054] 9. Moving wheel;

[0055] 10. Rack;

[0056] 11. Anti-toppling limiting plate;

[0057] 12. Fixed frame; 12-1. Fixed frame connecting plate; 12-2. Fixed frame panel; 12-3. Connecting plate mounting hole; 12-4. Fixed frame connecting slot; 12-5. Switch cabinet fixing hole;

[0058] 13. Chassis vehicle; 13-1. Chassis vehicle handle; 13-2. Chassis vehicle limiting plate; 13-3. Chassis vehicle crank hole; 13-4. Chassis vehicle screw;

[0059] 14. Handle;

[0060] 15. Plug interlocking device; 15-1. Plug limiting plate; 15-2. Pin; 15-3. Block; 15-4. Positioning frame; 15-5. I-shaped screw; 15-6. I-shaped nut; 15-7. Torsional spring; 15-8. Cotter pin; 15-9. Limiting flat washer; 15-10. II-shaped screw; 15-11. II-shaped nut; 15-12. Supporting piece;

[0061] 16. Top plate;

[0062] 17. positioning limiting plate;

[0063] 18. moving frame;

[0064] 19. circuit breaker body;

[0065] 20. static socket;

[0066] 21. dynamic plug;

[0067] 22. grounding copper braid;

[0068] In addition, the vertical direction mark shown as mark A, the counterclockwise rotation direction mark shown as mark B, the switch cabinet III mark, the plug interlocking fitting groove I mark of the switch cabinet are involved in the figure, and all the components are not drawn in the figure. DETAILED DESCRIPTION

[0069] EMBODIMENT

[0070] The structure and working principle of the 10kV floor type handcart fixed-seal vacuum circuit breaker are described in this embodiment. In the introduction of the related working principle, the cooperating components not required to be protected in the technical solution of the utility model, such as the switch cabinet, are inevitably involved, so this is described.

[0071] The cooperating components not required to be protected in the technical solution of the utility model involved in this embodiment and the accompanying drawings mainly include the switch cabinet III, the switch cabinet guide rail, the test position of the switch cabinet, the working position of the switch cabinet, the cabinet door of the switch cabinet, the plug interlocking fitting groove I of the switch cabinet, the positioning limiting plate of the switch cabinet, the anti-toppling sliding groove II of the switch cabinet, and the connecting contact of the switch cabinet.

[0072] The structure and working principle of the 10kV floor type handcart fixed-seal vacuum circuit breaker provided by the utility model are described below. Figures 1-8 The structure and working principle of the 10kV floor type handcart fixed-seal vacuum circuit breaker provided by the utility model are described below.

[0073] 1. Description of the circuit breaker body 19 and its accessories

[0074] 1.1 Description of the circuit breaker body 19

[0075] The circuit breaker body 19 is a centrally installed circuit breaker. In this embodiment, the circuit breaker body 19 is a 10kV fixed-seal pole type circuit breaker.

[0076] The L-shaped copper bars 3 and 4 are installed on the upper and lower line outlets of the fixed-seal pole 1. One end of the L-shaped copper bars 3 and 4 is connected with the line outlet of the fixed-seal pole, and the other end is provided with a contact 5.

[0077] The upper and lower outgoing line seat of the solid-sealed pole can be installed with an aluminum rod pad 2, one end of which is connected with the upper and lower outgoing line seat of the solid-sealed pole, and the other end is connected with the L-shaped copper bar 3 or the L-shaped copper bar 4; in this embodiment, the lower outgoing line seat is connected with the aluminum rod pad 2, which is used to increase the air insulation distance of the L-shaped copper bar 4 to the cabinet;

[0078] The L-shaped copper bar 3 and the L-shaped copper bar 4 can be provided with a nylon support rod 6 to keep the L-shaped copper bar 3 and the L-shaped copper bar 4 from deforming when they are in working condition, thereby avoiding the situation of poor contact of the contact; the nylon support rod 6 is a hard rod made of nylon, one end of which is provided on the horizontal part of the L-shaped copper bar through a screw, and the other end is connected to an L-shaped support rod bracket provided at the tail of the moving frame; in this embodiment, the horizontal part of the L-shaped copper bar 4 is provided with a nylon support rod 6;

[0079] The circuit breaker body 19 is provided with a through hole matched with the grounding copper braid 22, which is used to install the other end of the grounding copper braid 22; the grounding device will be described in detail in the following 3.1.

[0080] 1.2 Description of the circuit breaker chassis car 13

[0081] The circuit breaker body 19 is connected with the chassis car 13 below; the circuit breaker body 19 is connected with the chassis car 13 through a screw;

[0082] The chassis car 13 is provided with a chassis car handle 13-1, a chassis car limiting plate 13-2, a chassis car crank hole 13-3, and a chassis car screw rod 13-4 matched with the chassis car crank hole 13-3 (the chassis car crank is not shown in the figure, which adopts a conventional design);

[0083] The chassis car 13 is connected with the rack 10 through the fixed frame 12; the specific connection method will be described in detail in the following 2.1 about the fixed frame 12.

[0084] 2 Description of the rack 10 and its accessories

[0085] The rack 10 is provided with a fixed frame 12, a top plate 16 arranged above the rack 10, a moving frame 18 arranged below the rack 10, a handle 14 arranged on the rack 10, an anti-toppling limiting plate 11, and a positioning limiting plate 17;

[0086] 2.1 Description of the fixed frame 12

[0087] The fixed frame 12 is provided with a fixed frame connecting plate 12-1, a fixed frame panel 12-2, a switch cabinet fixing hole 12-5, and a grounding copper braid 22; the fixed frame connecting plate 12-1 is provided with a connecting plate mounting hole 12-3 and a fixed frame connecting groove 12-4.

[0088] The fixed frame connecting plate 12-1 and the fixed frame panel 12-2 are coupled by connecting plate mounting hole 12-3 using screws; the chassis truck 13 of the circuit breaker body 19 is coupled with the rack 10 through the fixed frame 12;

[0089] The extension adjusting mechanism is arranged between the chassis truck handle 13-1 and the chassis truck limiting plate 13-2, and by adjusting the chassis truck handle 13-1, the extendable chassis truck limiting plate 13-2 is connected with or separated from the fixed frame connecting groove 12-4, so as to realize the connection and separation of the chassis truck 13 and the fixed frame 12;

[0090] The detailed introduction of the grounding copper braid 22 is described in the following 3.1 about the grounding device;

[0091] 2.2 Description of the top plate 16

[0092] The top plate 16 is provided with a circuit breaker static plug 20, a dynamic plug 21 and a plug interlocking device 15; the plug interlocking device 15 includes a plug limiting plate 15-1, a pin 15-2, a blocking card 15-3, a positioning rack 15-4, an I-shaped screw 15-5, an I-shaped nut 15-6, a torsional spring 15-7, a split pin 15-8, a limiting flat washer 15-9, a II-shaped screw 15-10, a II-shaped nut 15-11 and a support 15-12;

[0093] The plug limiting plate 15-1 and the support 15-12 are provided with screw holes matched with the II-shaped screw 15-10; the support 15-12 and the positioning rack 15-4 are provided with through holes matched with the pin 15-2; the positioning rack 15-4 is provided with a screw hole matched with the I-shaped screw 15-5; the pin 15-2 is provided with a through hole matched with the split pin 15-8;

[0094] The plug limiting plate 15-1 and the support 15-12 are coupled by the II-shaped screw 15-10 and the II-shaped nut 15-11;

[0095] The support 15-12 and the positioning rack 15-4 are coupled by inserting the pin 15-2 into the matched through holes, and the two ends of the pin 15-2 are fixed by the blocking card 15-3 after passing through the through holes;

[0096] The pin 15-2 is provided with the torsional spring 15-7 and the limiting flat washer 15-9, the split pin 15-8 is inserted into the through hole of the pin 15-2 to limit the limiting flat washer 15-9 and the torsional spring 15-7, and the torsional spring 15-7 is limited by the II-shaped screw 15-10, the II-shaped nut 15-11, the I-shaped screw 15-5 and the I-shaped nut 15-6;

[0097] The positioning frame 15-4 is fixed to the upper surface of the top plate 16;

[0098] 2.3 Description and introduction of the mobile frame 18

[0099] The movable frame 18 is connected to the frame 10 by screws. The movable frame 18 is threaded with movable wheels 9 and door push plates 8 on both sides. The switch cabinet III is provided with guide rails that cooperate with the movable wheels 9. The switch cabinet III is provided with a cabinet door, which can be pushed open by the door push plate 8.

[0100] 3. Other instructions regarding floor-mounted circuit breakers

[0101] 3.1 Description of Grounding Device

[0102] The fixed frame 12 is provided with a grounding copper braid 22. One end of the grounding copper braid 22 is connected to the lower end of the fixed frame panel 12-2, and the other end is connected to the circuit breaker body. The circuit breaker body has a matching through hole for installing the other end of the grounding copper braid 22.

[0103] The fixed frame 12 is provided with switch cabinet fixing holes 12-5;

[0104] After the circuit breaker body 19 and the frame 10 are fully assembled, the grounding copper braid 22 connects the circuit breaker body 19 to the fixed frame 12; push the handle 14 to move the floor-mounted circuit breaker to the test position of switch cabinet III, and connect the switch cabinet fixing hole 12-5 on the fixed frame 12 with the through hole on the housing at the door of switch cabinet III using screws. At this time, the fixed frame 12 is connected to switch cabinet III, the floor-mounted circuit breaker is in the test position, the moving wheel 9 of the floor-mounted circuit breaker is connected to the switch cabinet guide rail, and the grounding of the floor-mounted circuit breaker and the switch cabinet is connected.

[0105] 3.2 Description of the plug interlocking device

[0106] The frame 10 has a matching through hole on the side near the plug interlocking device 15, allowing the plug limiting plate 15-1 to extend out.

[0107] During the assembly process, according to Figure 8 Press the protruding part of the plug limiting plate 15-1 in the direction indicated by mark A, and under the action of transmission, the support 15-12 presses down. Figure 8 Make a circular motion in the direction indicated by mark B. At this time, the plug interlocking device is opened, and the moving plug 21 can be inserted into (or pulled out) the stationary socket 20. Release the pressing force in direction A, and the support 15-12 will reset under the action of the torsion spring and press the moving plug 21 (assuming the moving plug 21 is inserted).

[0108] When the circuit breaker is assembled and moves from the test position to the working position, the plug limiting plate 15-1 is located in the plug interlocking groove I of the switch cabinet III, at which time the plate cannot be moved in the direction indicated by mark B, and the plug interlocking device cannot be opened, and the movable plug 21 is stably connected with the static socket 20. Figure 8 The support 15-12 cannot move in the direction indicated by mark B, and the plug interlocking device cannot be opened, and the movable plug 21 is stably connected with the static socket 20.

[0109] 3.3 Description of the limiting device

[0110] The floor-mounted circuit breaker is provided with two limiting devices, and the two limiting devices jointly position and limit the floor-mounted circuit breaker.

[0111] The frame 10 is provided with an angle plate 7; the frame 10 and the angle plate 7 are provided with matched screw holes, and the circuit breaker positioning limiting plate 17 can be adaptively installed between the frame 10 and the angle plate 7; and the frame 10, the positioning limiting plate 17 and the angle plate 7 are stacked and installed through screws.

[0112] As shown in the figure, the switch cabinet III is provided with the matched positioning limiting plate 17, and the specially arranged positioning limiting plate 17 can play a role in distinguishing and positioning, so as to realize that the floor-mounted circuit breaker is matched with only the matched switch cabinet. Figure 3

[0113] In the embodiment, the positioning limiting plate 17 on the floor-mounted circuit breaker and the positioning limiting plate 17 of the switch cabinet are alternately installed; when the floor-mounted circuit breaker is transferred from the test position to the working position, only when the positioning limiting plates 17 do not interfere with each other, the circuit breaker can be put into the corresponding switch cabinet.

[0114] The frame is provided with the anti-toppling limiting plate 11; the switch cabinet III is provided with the matched anti-toppling sliding groove II; when the floor-mounted circuit breaker is transferred from the test position to the working position, the anti-toppling limiting plate 11 is located in the anti-toppling sliding groove of the switch cabinet III, and under normal circumstances, the anti-toppling limiting plate 11 does not contact with the limiting groove, and when the floor-mounted circuit breaker is inclined forward or backward by more than a certain angle, the anti-toppling limiting plate 11 contacts with the upper end or the lower end of the anti-toppling sliding groove and prevents the floor-mounted circuit breaker from further toppling.

[0115] 3.4 Description of the floor-mounted circuit breaker transferred from the test position to the working position

[0116] The switch cabinet III is provided with the matched coupling contact with the contact 5.

[0117] ​When the floor standing circuit breaker is assembled and enters the test position, the moving wheel 9 is located on the guide rail of the switch cabinet, the chassis rocker is inserted into the chassis rocker hole 13-3 and engaged with the chassis screw rod 13-4, the chassis rocker is rocked, the chassis screw rod 13-4 rotates, and the floor standing circuit breaker is pushed from the test position to the working position. When the floor standing circuit breaker is transferred from the test position to the working position, the circuit breaker moving wheel 9 moves on the guide rail, the switch cabinet door is opened via the valve push plate 8, and stops after reaching the working position. The contact 5 is matched with the switch cabinet coupling contact, and the floor standing circuit breaker enters the working state.

Claims

1. A 10kV floor type handcart fixed-enclosure vacuum circuit breaker, comprising a circuit breaker body and a rack, characterized in that, the circuit breaker body is a centrally installed circuit breaker, and the circuit breaker body adopts a fixed-enclosure pole; the fixed-enclosure pole is provided with an upper outgoing line seat and a lower outgoing line seat, the upper outgoing line seat is coupled with an L-shaped copper bar, and the lower outgoing line seat is coupled with an L-shaped copper bar; a chassis trolley is coupled below the circuit breaker body, and the chassis trolley is provided with a limiting plate; the rack is provided with a fixed frame, and the limiting plate is sleeved with the fixed frame to realize the coupling of the chassis trolley and the rack; a top plate is arranged above the rack, and a plug interlocking device, a movable plug and a static socket are arranged above the top plate; the rack is provided with a moving frame, and the moving frame is provided with moving wheels; the rack is provided with a positioning limiting device and an anti-toppling limiting device; the circuit breaker body is provided with a matched switch cabinet, and the circuit breaker body is provided with a detachable grounding device; the detachable grounding device comprises a detachable grounding copper braid grounding device between the circuit breaker body and the fixed frame and a screw grounding device between the fixed frame and the switch cabinet.

2. The 10 kV floor type trolley-operated dead tank vacuum circuit breaker as claimed in claim 1 wherein, aluminum rod pads are arranged between the upper outgoing line seat and the L-shaped copper bar, and aluminum rod pads are arranged between the lower outgoing line seat and the L-shaped copper bar.

3. The 10 kV floor type trolley-operated dead tank vacuum circuit breaker as claimed in claim 1 wherein, a vertical support rod is arranged on the horizontal part of the L-shaped copper bar, one end of the support rod is coupled with the horizontal part of the L-shaped copper bar, and the other end is coupled with the rack.

4. The 10 kV floor type trolley-operated dead tank vacuum circuit breaker as claimed in claim 1 wherein, the positioning limiting device is an alternatingly installed positioning limiting plate arranged on the rack and the switch cabinet; the positioning limiting plate can realize that when the floor type circuit breaker is adaptively installed with the switch cabinet, the positioning limiting plates arranged on the rack and the switch cabinet do not collide and interfere with each other, and the floor type circuit breaker can adapt to the corresponding switch cabinet.

5. The 10 kV floor type trolley-operated dead tank vacuum circuit breaker as claimed in claim 1 wherein, the anti-toppling limiting device is an anti-toppling limiting plate arranged on the rack, and the switch cabinet is provided with a matched anti-toppling sliding groove; the anti-toppling limiting plate and the anti-toppling sliding groove can limit the angle range of the floor type circuit breaker when moving into the switch cabinet.

6. The 10 kV floor type trolley-operated dead tank vacuum circuit breaker as claimed in claim 1 wherein, the moving frame is provided with a flap push plate, which can push open the switch cabinet door when the floor type circuit breaker enters the switch cabinet.

7. The 10 kV floor type trolley-operated dead tank vacuum circuit breaker as claimed in claim 1 wherein, the limiting plate is provided with a telescopic adjusting mechanism, and the coupling and disengagement of the limiting plate and the fixed frame are repeatedly realized through the telescopic adjusting mechanism.

8. The 10 kV floor type trolley-operated dead tank vacuum circuit breaker as claimed in claim 7, wherein, the chassis trolley is provided with a chassis trolley handle, a chassis trolley crank, a chassis trolley crank hole, and a chassis trolley screw rod matched with the chassis trolley crank hole; the telescopic adjusting mechanism is arranged between the chassis trolley handle and the limiting plate, and adjusting the chassis trolley handle can repeatedly realize the coupling and disengagement of the limiting plate and the fixed frame.

9. The 10 kV floor-standing trolley sealed vacuum circuit breaker of claim 1, wherein, the plug interlocking device comprises a plug limiting plate, a pin, a blocking card, a positioning frame, an I-shaped screw, an I-shaped nut, a torsional spring, a split pin, a limiting flat pad, a II-shaped screw, a II-shaped nut, and a support piece. The plug limiting plate is provided with a screw hole matched with a type II screw on the support; the support and the positioning frame are provided with through holes matched with a pin; the positioning frame is provided with a screw hole matched with a type I screw; the pin is provided with a through hole matched with a split pin; the plug limiting plate and the support are connected through a type II screw and a type II nut; The support and the positioning frame are connected by inserting the pin into the matched through holes, and the two ends of the pin are fixed by a blocking clamp after passing through the through holes; a torsion spring and a limiting flat washer are arranged on the pin, and the split pin is inserted into the through hole arranged on the pin to limit the limiting flat washer and the torsion spring; the torsion spring is limited by the type II screw, the type II nut, the type I screw and the type I nut; The positioning frame is fixed on the upper surface of the top plate.

Images