CN203445048U - Three-station double grounding load switch - Google Patents
Three-station double grounding load switch Download PDFInfo
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- CN203445048U CN203445048U CN201320590352.8U CN201320590352U CN203445048U CN 203445048 U CN203445048 U CN 203445048U CN 201320590352 U CN201320590352 U CN 201320590352U CN 203445048 U CN203445048 U CN 203445048U
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Abstract
The utility model discloses a three-station double grounding load switch. The three-station double grounding load switch comprises a support and an insulating main shaft. The insulating main shaft is driven by a driving mechanism and is equipped with a plurality of contact knives extending radially, and the contact knives can conduct an upper static contact base and a square conductor when rotating to the switch-on positions along with the insulating main shaft. The upper static contact base is connected with an input cable, a high voltage fuse is in series connection between the square conductor and an output cable, and the output end of the high voltage fuse is equipped with two output lines. One of the output lines is connected with the output cable, and the other one is connected with an auxiliary grounding contact base. When the contact knives rotate to the disconnecting positions along with the insulating main shaft, the current of a circuit is cut off, and when the contact knives rotate to the grounding positions along with the insulating main shaft, the auxiliary grounding contact base and the square conductor are connected with a main grounding contact base which is grounded all the time. According to the utility model, the operation of the three stations and the double grounding of the high voltage fuse can be realized simultaneously by just installing one switch, and the three-station double grounding load switch is convenient to install and maintain, and enables the work efficiency of maintenance and replacement to be improved, and the operation safety to be improved at the same time.
Description
Technical field
The utility model relates to appliance switch technical field, particularly relates to the two earth load switchs of a kind of three stations.
Background technology
While there is the faults such as current overload or short circuit in circuit, fuse is understood and self is fused to protect loaded line to avoid damaging.In the process that fuse is overhauled, changed, particularly, in high-tension circuit, for fully ensureing, first need maintenance personal's personal safety by the two-terminal-grounding of high-tension fuse.Traditional three-stations load switch can only be by one end ground connection of high-tension fuse, the other end of high-tension fuse needs to realize by other matching used earthed switch, also need plural switch to support the use the two ground connection that could realize high-tension fuse two ends, if realize the two ends while ground connection of high-tension fuse, also will two earthed switches be linked by a linkage.Obviously, this earthing mode has not only increased the workload of maintenance, replacing, has also reduced the reliability of installation rate and switch simultaneously.
Chinese patent document CN201392762Y discloses a kind of earthed switch, this earthed switch comprises switch skeleton, ground connection operation axis, earthing chip module, fixed contact pedestal, contact head insulated support and contact assembly form, wherein ground connection operation axis can be rotatably set in switch skeleton, earthing chip module is fixed on ground connection operation axis, and described contact assembly comprises the grounding static contact being embedded on the fixed contact pedestal being fixed in contact head insulated support and is fixed on contact head insulated support and the auxiliary earth fixed contact that runs in and be electrically connected to auxiliary earth chain; The two ends of high-tension fuse are connected on main grounded circuit and auxiliary grounded circuit.Although this earthed switch can make the two ends while ground connection of high-tension fuse, but owing to being parallel on main line between this switch and high-tension fuse, if make main line On current, also will support the use and could realize with other on-load switch, thereby this earthed switch have the workload while reducing maintenance, replacing high-tension fuse.
Utility model content
For this reason, the technical problems to be solved in the utility model be to provide a kind of can either conducting line current, can to high-tension fuse maintenance, while changing, make its two ends two earth load switchs of three stations of ground connection simultaneously again.
For achieving the above object, the utility model is by the following technical solutions:
The two earth load switchs of station, comprise support; Insulation spindle, the two ends of described insulation spindle are arranged in the axis hole on described support biside plate, and described insulation spindle is driven and is rotated by the driving mechanism that is located at its one end; Described insulation spindle is provided with some contact knifes that radially extend, when described contact knife rotates to on-position with described insulation spindle, and static contact seat and square conductor in conducting; Described static contact seat is connected with input cable, between described side's conductor and output cable, is in series with high-tension fuse; Main ground contact seat, described main ground contact seat ground connection; On described support, be also provided with auxiliary ground contact seat, between described auxiliary ground contact seat and described support, insulation arranges; The output of described high-tension fuse is provided with two outlet lines, and wherein one is connected with output cable, and another root is connected to described auxiliary ground contact seat; Open circuit electric current when described contact knife rotates to open position with described insulation spindle; When described contact knife rotates to earthing position with described insulation spindle, by described auxiliary ground contact seat, described side's conductor and described main ground contact seat conducting.
One end of described side's conductor is hinged on the place, axle center of described insulation spindle, and one end away from described insulation spindle of described side's conductor is fixedly connected with the insulated support being arranged on described support; Described side's conductor is electrically connected to described contact knife; Described insulation spindle is provided with groove, and described side's conductor is arranged in described groove, and described groove is suitable for described insulation spindle and drives described contact knife to rotate with respect to described side's conductor.
Described contact knife runs through described insulation spindle, described contact knife by bearing pin hinged with described side's conductor and contact be connected, the axis of described bearing pin and the dead in line of described insulation spindle; One end of described contact knife is suitable for while rotating with described insulation spindle and described upper static contact seat or described main ground contact seat contact or separated; The other end of described contact knife is suitable for while rotating with described insulation spindle and described auxiliary ground contact seat contact or separated.
Described contact knife comprises long contact and the short contact that is set in parallel in described side's conductor both sides; Described long contact and described short contact are all hinged on described bearing pin, described short contact is extended to described insulation spindle outside by described axle center, the two ends of described long contact all extend to the outside of described insulation spindle, one end that described long contact extends in the same way with described short contact flushes with the end of described short contact, and is suitable for and described upper static contact seat and described main ground contact seat contact or separated; One end that described long contact oppositely extends with described short contact is suitable for and described auxiliary ground contact seat contact or separated.
One side of close described side's conductor of the hinged place of described long contact and described short contact is respectively equipped with projection, and described long contact and described short contact are connected with described side's conductor contact by described projection.
Described projection is hemisphere jut, and described bearing pin is through the center of described projection.
The outside of described insulation spindle is provided with contact knife seat, and described contact knife passes from described contact knife seat inside, and the end nipple of described contact knife is for described contact knife seat.
The side that described long contact and described short contact are relative with described insulation spindle is respectively equipped with elastic component, and one end of described elastic component is against on described long contact and described short contact, and its other end supports on described insulation spindle; Described elastic component forces described long contact and described short contact and described side's conductor close contact.
Described elastic component arranges two pairs, wherein a pair of described elastic component is positioned at the shaft core position place of described insulation spindle, it is sheathed on described bearing pin, and one end is resisted against in the stopper slot on described long contact or described short contact, the other end is resisted against for described bearing pin being fixed on to the axis pin base at place, described insulation spindle axle center; Another is positioned at the openend of described contact knife seat to described elastic component, it is sheathed on the alignment pin that runs through described long contact and described short contact, one end of described elastic component is resisted against on the inwall of described contact knife seat, and the other end is resisted against on described long contact or described short contact.
Between described long contact and described short contact, near end position, be provided with for limiting the partition adjustable portion of relative position between described long contact and described short contact; Described partition adjustable portion comprises and being arranged between described long contact and described short contact, and by the spacer ring of described long contact and the spaced apart certain interval of described short contact, the contact thickness on described gap and described upper static contact seat and described main ground contact seat matches; And the screw rod that described long contact, described short contact, described spacer ring serial connection are coordinated, described screw rod coordinates fastening with nut; And at least between screw head and contact knife, or be provided with elastic component between nut and contact knife.
The beneficial effects of the utility model:
1. static contact seat of the present utility model is connected with input cable, between square conductor and output cable, is in series with high-tension fuse; Support is provided with auxiliary ground contact seat, and between auxiliary ground contact seat and described support, insulation arranges; The output of high-tension fuse is provided with two outlet lines, and wherein one is connected with output cable, and another root is connected to described auxiliary ground contact seat; Open circuit electric current when contact knife rotates to open position with described insulation spindle; When contact knife rotates to earthing position with described insulation spindle, by described auxiliary ground contact seat, described side's conductor and described main ground contact seat conducting.Contact knife of the present utility model is controlled to realize three stations with the rotatable on-position of rotation, open position, the earthing position of insulation spindle; When contact knife rotates to earthing position, the auxiliary ground contact seat of conducting, square conductor and main ground contact seat, due to main ground contact seat body ground connection all the time, now auxiliary ground contact seat, square conductor are ground state; And the two ends of high-tension fuse are respectively on the side's of being connected on conductor and auxiliary ground contact seat, therefore, at the two ends of earthing position high-tension fuse, are ground connection.This design only need be installed a switch just can realize two ground connection of three station manipulations and high-tension fuse simultaneously, and is convenient to install, safeguard, improves the operating efficiency of maintenance, replacing, and has improved the fail safe of operation.
2. a side of close side's conductor of the hinged place of long contact of the present utility model and short contact is respectively equipped with projection, and long contact and short contact are connected with described side's conductor contact by described projection; And being respectively equipped with elastic component in the relevant position of the side relative to projection of long contact and short contact, this elastic component forces long contact and short contact and square conductor close contact.Due to contacting close to a contact between long contact and short contact and square conductor, and elastic component is from extruding in the middle of two side direction, is so more conducive to long contact, short contact, square conductor at articulated position On current.
3. between long contact of the present utility model and described short contact, near end position, be provided with partition adjustable portion, this partition adjustable portion comprises the spacer ring being arranged between long contact and short contact, and screw rod and nut that long contact, short contact, spacer ring serial connection are coordinated; And at least between screw head and contact knife, be provided with elastic component.This design make long contact and short contact adjustable in the interval of end elasticity, can be more closely with upper static contact seat or main ground contact seat on contact close contact, improve conducting quality.
Accompanying drawing explanation
For the content of utility model is more likely to be clearly understood, according to specific embodiment of the utility model also by reference to the accompanying drawings, the utility model is described in further detail, wherein below
Fig. 1 is stereogram of the present utility model;
Fig. 2 is switching circuit schematic diagram of the present utility model;
Fig. 3 is the structural representation of contact knife of the present utility model and insulation spindle cooperation place;
Fig. 4 is the structural representation of long contact of the present utility model;
Fig. 5 is the structural representation of switch of the present utility model when on-position;
Fig. 6 is the structural representation of switch of the present utility model when open position;
Fig. 7 is the structural representation of switch of the present utility model when earthing position;
Fig. 8 is the stereogram of insulation spindle of the present utility model;
Fig. 9 is the front view of insulation spindle of the present utility model;
Figure 10 is that the A-A of Fig. 9 is to view.
In figure, Reference numeral is expressed as:
1-support; 2-insulation spindle; 21-groove; 22-contact knife seat; 3-contact knife; The long contact of 31-; The short contact of 32-; 33-projection; 34,94-elastic component; 35-stopper slot; 36-protuberance; 37-axis pin base; 38-alignment pin; The upper static contact seat of 4-; 5-side's conductor; 51-supporting insulator; 52-high-tension fuse; The main ground contact seat of 6-; 61-grounding copper bar; The auxiliary ground contact seat of 7-; 8-bearing pin; 91-spacer ring; 92-screw rod; 93-nut.
Embodiment
Referring to Fig. 1-2, the two earth load switchs of three stations of the present utility model, comprise support 1; Insulation spindle 2, the two ends of described insulation spindle 2 are arranged in the axis hole on described support 1 biside plate, described insulation spindle 2 is driven and is rotated by the driving mechanism that is located at its one end, driving mechanism in the present embodiment adopts traditional spring operating mechanism, referring to Fig. 9-10, the respective end of described insulation spindle offers splined hole, described insulation spindle pass through spline fitted with described spring operating mechanism.Described insulation spindle 2 is provided with some contact knifes 3 that radially extend, when described contact knife 3 rotates to on-position with described insulation spindle 2, and static contact seat 4 and square conductor 5 in conducting; Described static contact seat 4 is connected with input cable, between described side's conductor 5 and output cable, is in series with high-tension fuse 52; Ground connection after main ground contact seat 6 and grounding copper bar 61 conductings; On described support 1, be also provided with auxiliary ground contact seat 7, between described auxiliary ground contact seat 7 and described support 1, insulation arranges; The output of described high-tension fuse 52 is provided with two outlet lines, and wherein one is connected with output cable, and another root is connected to described auxiliary ground contact seat 7; Open circuit electric current when described contact knife 3 rotates to open position with described insulation spindle 2; When described contact knife 3 rotates to earthing position with described insulation spindle 2, by described auxiliary ground contact seat 7, described side's conductor 5 and described main ground contact seat 6 conductings.
Referring to Fig. 3, Fig. 8, in the present embodiment, one end of described side's conductor 5 is hinged on the place, axle center of described insulation spindle 2, and one end away from described insulation spindle 2 of described side's conductor 5 is fixedly connected with the insulated support 51 being arranged on described support 1; Described side's conductor 5 is electrically connected to described contact knife 3; Described insulation spindle 2 is provided with groove 21, the basic one-tenth sector structure of described groove 21, and described side's conductor 5 is arranged in described groove 21; Because described side's conductor 5 is fixedly connected with the insulated support 51 arranging on support 1, when driving described contact knife 3 to rotate, described insulation spindle 2 can rotate relative to described side's conductor 5.
In the present embodiment, described contact knife 3 runs through described insulation spindle 2, and makes the two ends of described contact knife 3 all protrude from the body of described insulation spindle 2, and described contact knife 3 is hinged by bearing pin 8 and described side's conductor 5, and contact connects at pin joint place.The dead in line of the axis of described bearing pin 8 and described insulation spindle 2; One end of described contact knife 3 is suitable for while rotating with described insulation spindle 2 and described upper static contact seat 4 or 6 contacts or separated of described main ground contact seat; The other end of described contact knife 3 is suitable for and 7 contacts or separated of described auxiliary ground contact seat while rotating with described insulation spindle 2.
Referring to Fig. 3-4, described contact knife 3 comprises long contact 31 and the short contact 32 that is set in parallel in described side's conductor 5 both sides; Described long contact 31 and described short contact 32 are all hinged on described bearing pin 8, described short contact 32 is extended to described insulation spindle 2 outsides by described axle center, the two ends of described long contact 31 all extend to the outside of described insulation spindle 2, described long contact 31 flushes with the end of described short contact 32 with one end that described short contact 32 extends in the same way, and is suitable for and described upper static contact seat 4 and 6 contacts or separated of described main ground contact seat; One end that described long contact 31 oppositely extends with described short contact 32 is suitable for and described auxiliary ground contact seat 7 contacts or separated.
In the present embodiment, one side of close described side's conductor 5 of the hinged place of described long contact 31 and described short contact 32 is respectively equipped with projection 33, described long contact 31 and described short contact 32 are connected with described side's conductor 5 contacts by described protruding 33, described protruding 33 is hemisphere jut, and described bearing pin 8 is through described protruding 33 center.Described protruding 33 can directly stamp out corresponding hemisphere jut in the relevant position of described long contact 31 and described short contact 32, then in the center of this projection 33, process the pin-and-hole passing for described bearing pin 8, certainly, also can adopt the bulge-structure of other form.
The outside of insulation spindle described in the present embodiment 2 is provided with contact knife seat 22, and described contact knife 3 passes from described contact knife seat 22 inside, and the end nipple of described contact knife 3 is for described contact knife seat 22.Because will extending 2 external segment length of described insulation spindle, contact knife 3 could contact with the contact on upper static contact seat 4, main ground contact seat 6, auxiliary ground contact seat 7, contact knife seat 22 is set can make contact knife 3 bodies of more part coated by described insulation spindle 2, prevent that contact knife 3 from bending because torsion is excessive, and then improve the making capacity of contact knife.
In the present embodiment, the side that described long contact 31 and described short contact 32 are relative with described insulation spindle 2 is respectively equipped with elastic component 34, described elastic component 34 is Compress Spring, one end of described elastic component 34 is against on described long contact 31 and described short contact 32, and its other end supports on described insulation spindle 2; Described elastic component 34 forces described long contact 31 and described short contact 32 and described side's conductor 5 close contacts, thus the electric conductivity between the side's of guaranteeing conductor 5 and long contact 31 and short contact 32.
In the present embodiment, described elastic component 34 arranges two pairs, wherein a pair of described elastic component 34 is positioned at the shaft core position place of described insulation spindle 2, it is sheathed on described bearing pin 8, and one end is resisted against in the stopper slot 35 on described long contact 31 or described short contact 32, the other end is resisted against at the axis pin base 37 of locating for described bearing pin 8 being fixedly mounted on to insulation spindle 2 axle center; It is mainly for the ease of assembling that axis pin base 37 is set, and certainly, also can directly described bearing pin 37 and described elastic component 34 be conflicted on the inwall of described insulation spindle 2; Another is positioned at the openend of described contact knife seat 22 to described elastic component 34, it is sheathed on the alignment pin 38 that runs through described long contact 31 and described short contact 32, described alignment pin 38 not only can fixedly be assemblied in described contact knife seat 22 inside by described long contact 31 and described short contact 32, has also guaranteed described long contact 31 and described short contact 32 synchronous rotaries simultaneously; One end of described elastic component 34 is resisted against on the inwall of described contact knife seat 22, and the other end is resisted against on described long contact 31 or described short contact 32.
In the present embodiment, between described long contact 31 and described short contact 32 near end position, be provided with for limit described long contact 31 and described short contact 32 excessively near or the partition adjustable portion of over-separation; Described partition adjustable portion comprises and being arranged between described long contact 31 and described short contact 32, and by the spacer ring 91 of described long contact 31 and described short contact 32 spaced apart certain intervals, contact thickness on described gap and described upper static contact seat 4 and described main ground contact seat 6 matches, also be in the middle of described gap can be stuck in described contact just, so that described contact and described long contact 31, described short contact 32 close contacts, and then On current.Screw rod 92 is successively through described long contact 31, described spacer ring 91, described short contact 32, after coordinating with nut 93, described long contact 31, described short contact 32, described spacer ring 91 are serially connected, and be provided with elastic component 94 between screw head and long contact 31, elastic component 94 can certainly be arranged between described nut 93 and short contact 32, elastic component 94 as used herein is disk spring.When described contact knife 3 rotates to on-position with insulation spindle 2, contact on described upper static contact seat 4 is stuck between described long contact 31, described short contact 32 just, and have and described long contact 31, described short contact 32 are strutted to both sides and compress described elastic component 94, described elastic component 94 produces the elastic force that forces described long contact 31, described short contact 32 and described contact close contact simultaneously, thereby improves electric conductivity.In the present embodiment, the position that the contact with on described upper static contact seat 4 or described main ground contact seat 6 of described long contact 31 and described short contact 32 contacts is respectively equipped with contact protuberance 36, between described protuberance 36 and described contact, substantially can form and contact, can further improve electric conductivity.
The operation principle of the two earthed switches of three stations of the present utility model is as follows:
One, on-position
Referring to Fig. 4, when on-position, described contact knife 3 is in level, and described contact knife 3 left parts contact with upper static contact 4, and now input current is flowed through contact knife 3, square conductor 5, high-tension fuse 52 from described upper static contact 4, is load circuit power supply.
Two, open position
Referring to Fig. 5, described contact knife 3 is by on-position 45 degree that turn clockwise, and the left end of described contact knife 3 disconnects and contacting with described upper static contact seat, and now load circuit is in off-state.
Three, earthing position
Referring to Fig. 6, when maintenance or changing high-tension fuse 52, by spring operating mechanism, make contact knife 3 by open position 45 degree that continue to turn clockwise, now the upper end of contact knife 3 contacts with main ground contact seat 6, the lower end of described contact knife 3, also the i.e. lower end of long contact 31, contacts with auxiliary ground contact seat 7; Because main ground contact seat 6 is all the time by grounding copper bar 61 ground connection, so now auxiliary ground contact seat 7 and square conductor 5 are ground state.In the utility model, one end of high-tension fuse 52 is connected with square conductor 5, and its other end is not only connected with load circuit, but also is connected with auxiliary ground contact seat 7, and therefore, at earthing position, the two ends of described high-tension fuse 52 are ground connection simultaneously.
Above-mentioned embodiment is just explained in detail the technical solution of the utility model; the utility model has more than and is only confined to above-described embodiment; those skilled in the art should be understood that; the above-mentioned principle of every foundation and the improvement of spirit on the utility model basis, substitute, all should be within protection range of the present utility model.
Claims (10)
1. the two earth load switchs of three stations, comprise support (1);
Insulation spindle (2), the two ends of described insulation spindle (2) are arranged in the axis hole on described support (1) biside plate, and described insulation spindle (2) is driven and is rotated by the driving mechanism that is located at its one end; Described insulation spindle (2) is provided with some contact knifes (3) that radially extend, when described contact knife (3) rotates to on-position with described insulation spindle (2), and static contact seat in conducting (4) and square conductor (5); Described upper static contact seat (4) is connected with input cable, is in series with high-tension fuse (52) between described side's conductor (5) and output cable;
Main ground contact seat (6), described main ground contact seat (6) ground connection;
It is characterized in that: on described support (1), be also provided with auxiliary ground contact seat (7), between described auxiliary ground contact seat (7) and described support (1), insulation arranges; The output of described high-tension fuse (52) is provided with two outlet lines, and wherein one is connected with output cable, and another root is connected to described auxiliary ground contact seat (7); Open circuit electric current when described contact knife (3) rotates to open position with described insulation spindle (2); When described contact knife (3) rotates to earthing position with described insulation spindle (2), by described auxiliary ground contact seat (7), described side's conductor (5) and described main ground contact seat (6) conducting.
2. two earth load switchs of a kind of three stations according to claim 1, it is characterized in that: one end of described side's conductor (5) is hinged on the place, axle center of described insulation spindle (2), and one end away from described insulation spindle (2) of described side's conductor (5) is fixedly connected with the insulated support (51) being arranged on described support (1); Described side's conductor (5) is electrically connected to described contact knife (3); Described insulation spindle (2) is provided with groove (21), and described side's conductor (5) is arranged in described groove (21), and described groove (21) is suitable for described insulation spindle (2) and drives described contact knife (3) to rotate with respect to described side's conductor (5).
3. two earth load switchs of a kind of three stations according to claim 1 and 2, it is characterized in that: described contact knife (3) runs through described insulation spindle (2), described contact knife (3) is hinged with described side's conductor (5) and contact and to be connected, the dead in line of the axis of described bearing pin (8) and described insulation spindle (2) by bearing pin (8); One end of described contact knife (3) is suitable for while rotating with described insulation spindle (2) and described upper static contact seat (4) or described main ground contact seat (6) contact or separated; The other end of described contact knife (3) is suitable for while rotating with described insulation spindle (2) and described auxiliary ground contact seat (7) contact or separated.
4. the two earth load switchs of a kind of three stations according to claim 3, is characterized in that: described contact knife (3) comprises long contact (31) and the short contact (32) that is set in parallel in described side's conductor (5) both sides; Described long contact (31) and described short contact (32) are all hinged on described bearing pin (8), described short contact (32) is extended to described insulation spindle (2) outside by described axle center, the two ends of described long contact (31) all extend to the outside of described insulation spindle (2), one end that described long contact (31) extends in the same way with described short contact (32) flushes with the end of described short contact (32), and is suitable for and described upper static contact seat (4) and described main ground contact seat (6) contact or separated; One end that described long contact (31) oppositely extends with described short contact (32) is suitable for and described auxiliary ground contact seat (7) contact or separated.
5. two earth load switchs of a kind of three stations according to claim 4, it is characterized in that: a side of close described side's conductor (5) of the hinged place of described long contact (31) and described short contact (32) is respectively equipped with projection (33), described long contact (31) and described short contact (32) are connected with described side's conductor (5) contact by described projection (33).
6. the two earth load switchs of a kind of three stations according to claim 5, is characterized in that: described projection (33) is hemisphere jut, and described bearing pin (8) is through the center of described projection (33).
7. two earth load switchs of a kind of three stations according to claim 6, it is characterized in that: the outside of described insulation spindle (2) is provided with contact knife seat (22), described contact knife (3) passes from described contact knife seat (22) inside, and the end nipple of described contact knife (3) is for described contact knife seat (22).
8. two earth load switchs of a kind of three stations according to claim 7, it is characterized in that: the side that described long contact (31) and described short contact (32) are relative with described insulation spindle (2) is respectively equipped with elastic component (34), one end of described elastic component (34) is against described long contact (31) and described short contact (32) is upper, and its other end supports on described insulation spindle (2); Described elastic component (34) forces described long contact (31) and described short contact (32) and described side's conductor (5) close contact.
9. two earth load switchs of a kind of three stations according to claim 8, it is characterized in that: described elastic component (34) arranges two pairs, wherein a pair of described elastic component (34) is positioned at the shaft core position place of described insulation spindle (2), it is sheathed on described bearing pin (8), and one end is resisted against in the stopper slot (35) on described long contact (31) or described short contact (32), the other end is resisted against for described bearing pin (8) being fixed on to the axis pin base (37) at place, described insulation spindle (2) axle center; Another is positioned at the openend of described contact knife seat (22) to described elastic component (34), it is sheathed on the alignment pin (38) that runs through described long contact (31) and described short contact (32), one end of described elastic component (34) is resisted against on the inwall of described contact knife seat (22), and the other end is resisted against on described long contact (31) or described short contact (32).
10. the two earth load switchs of a kind of three stations according to claim 9, is characterized in that: between described long contact (31) and described short contact (32), near end position, be provided with for limiting the partition adjustable portion of relative position between described long contact (31) and described short contact (32); Described partition adjustable portion comprises and being arranged between described long contact (31) and described short contact (32), and by the spacer ring (91) of described long contact (31) and the spaced apart certain interval of described short contact (32), the contact thickness on described gap and described upper static contact seat (4) and described main ground contact seat (6) matches; And the screw rod (92) that described long contact (31), described short contact (32), described spacer ring (91) serial connection are coordinated, described screw rod (92) coordinates fastening with nut (93); And at least between screw head and contact knife (3), or be provided with elastic component (94) between nut (93) and contact knife (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320590352.8U CN203445048U (en) | 2013-09-24 | 2013-09-24 | Three-station double grounding load switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320590352.8U CN203445048U (en) | 2013-09-24 | 2013-09-24 | Three-station double grounding load switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203445048U true CN203445048U (en) | 2014-02-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320590352.8U Withdrawn - After Issue CN203445048U (en) | 2013-09-24 | 2013-09-24 | Three-station double grounding load switch |
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| Country | Link |
|---|---|
| CN (1) | CN203445048U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103474284A (en) * | 2013-09-24 | 2013-12-25 | 东盟电气集团浙江开关有限公司 | Three-work-station dual-ground-connection load switch |
| CN110993419A (en) * | 2019-12-31 | 2020-04-10 | 任广民 | Six-station low-voltage combination switch |
-
2013
- 2013-09-24 CN CN201320590352.8U patent/CN203445048U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103474284A (en) * | 2013-09-24 | 2013-12-25 | 东盟电气集团浙江开关有限公司 | Three-work-station dual-ground-connection load switch |
| CN103474284B (en) * | 2013-09-24 | 2015-07-22 | 东盟电气集团浙江开关有限公司 | Three-work-station dual-ground-connection load switch |
| CN110993419A (en) * | 2019-12-31 | 2020-04-10 | 任广民 | Six-station low-voltage combination switch |
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Granted publication date: 20140219 Effective date of abandoning: 20150722 |
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