CN101706517A

CN101706517A - Arc generating device for testing electric switch contact material

Info

Publication number: CN101706517A
Application number: CN200910310925A
Authority: CN
Inventors: 任万滨; 翟国富; 任继成
Original assignee: Harbin Institute of Technology Shenzhen
Current assignee: Harbin Institute of Technology Shenzhen
Priority date: 2009-12-04
Filing date: 2009-12-04
Publication date: 2010-05-12
Anticipated expiration: 2029-12-04
Also published as: CN101706517B

Abstract

The utility model relates to an arc generating device for testing electrical switch contact materials, which relates to an arc generating device. The invention solves the problem that there is no arc generating device for testing electrical switch contact materials at present. One end of each guide rail is fixed on the fixed block, and the other end of each guide rail is inserted on the adjustment block and slidably connected with the adjustment block. There is a gap between the lower end surface of the adjustment block and the upper end surface of the bottom plate. The first The insulating plate is fixed on the upper end surface of the fixed block, the second insulating plate is fixed on the upper end surface of the adjustment block, the first clamp is installed on the upper end surface of the first insulating plate, and the second clamp is installed on the upper end surface of the adjustment block. On the upper end faces of the two insulating plates, the upper end faces of the first insulating plate and the upper end faces of the second insulating plates are on the same horizontal plane. The arc generating device of the present invention is suitable for testing the characteristics of AC and DC arcs of different contact materials, and can conveniently analyze the effects of factors such as arc length, power supply voltage, load properties, and load size on the stable combustion point of the arc.

Description

The arc generating device of testing electric switch contact material

Technical field

The present invention relates to a kind of arc generating device, be specifically related to a kind of arc generating device of testing electric switch contact material.

Background technology

Reliability height, life-span length are the developing direction of electric switch, have directly influenced the reliability and the serviceable life of electric switch yet the arc discharge that takes place between the electric switch contact causes electric switch contact material to be ablated.The relation of arc voltage and flame current is the key property curve that is used for describing arc discharge.Direct-current arc quiescent voltage current characteristics curve representation be that electric arc burns in steady state (SS), promptly strength of current and arc length are invariable, the characteristic when perhaps only slowly changing.Though in electric switch, can not satisfy the characteristic condition of static arc usually, but the basis that it not only can be used as research electric arc dynamic electric voltage electric current also is simultaneously the relation that distance is opened in the minimum burning voltage of definite material and minimum arcing current, arc time and contact; Also can determine the smooth combustion point of direct-current arc in addition by quiescent voltage current characteristics curve, thus can be direct-current arc extinguish the proposition effective measures.But the arc generating device that does not have testing electric switch contact material at present.

Summary of the invention

The objective of the invention is for solving the problem of the arc generating device that does not have testing electric switch contact material at present, and then a kind of arc generating device of testing electric switch contact material is provided.

The present invention solves the problems of the technologies described above the technical scheme of taking to be: the arc generating device of testing electric switch contact material of the present invention comprises base plate, bearing seat, regulating shaft, fixed block, adjust piece, two guide rails, first insulcrete, second insulcrete, first anchor clamps, second anchor clamps, two binding posts, clutch shaft bearing, second bearing and adjusting handle, described bearing seat is packed in the end on the base plate upper surface, described fixed block correspondence is packed in the other end on the base plate upper surface, the middle part of described fixed block axially has a ladder hole along bearing seat, described second Bearing Installation is in the ladder hole of fixed block, one end of described regulating shaft is installed on the bearing seat by clutch shaft bearing, the other end of described regulating shaft is installed on the second interior bearing of fixed block, outside surface on the described regulating shaft between bearing seat and fixed block is processed with screw thread, the middle part of described adjustment piece axially has a tapped through hole along bearing seat, described adjustment piece is between fixed block and bearing seat, described adjustment piece is installed on the regulating shaft and between the two and is threaded, described two guide rails be arranged in parallel between the both sides of regulating shaft and three, one end of every guide rail is packed on the fixed block, the other end of every guide rail is inserted into to adjust on the piece and with the adjustment piece and is slidingly connected, leave the gap between the lower surface of described adjustment piece and the upper surface of base plate, described first insulcrete is packed on the upper surface of fixed block, described second insulcrete is packed on the upper surface of adjusting piece, described first anchor clamps are installed on the upper surface of first insulcrete, described second anchor clamps are installed on the upper surface of second insulcrete, and first anchor clamps and the second anchor clamps opposing parallel are provided with, a binding post all is installed on described first anchor clamps and second anchor clamps, the upper surface of the upper surface of described first insulcrete and second insulcrete is on same surface level, described first anchor clamps and second anchor clamps are made by metal material, are installed with adjusting handle on the described regulating shaft.

The invention has the beneficial effects as follows: the arc generating device of testing electric switch contact material of the present invention is applicable to the test of the alterating and direct current arc property of different slider materials, can conveniently analyze the influence of factors such as electric arc arc length, supply voltage and load characteristic, load size to the arc stability flare point; The present invention is simple in structure, easy to operate, only need manually can be operated, and cost is low.

Description of drawings

The stereographic map of Fig. 1 arc generating device of the present invention, Fig. 2 are the vertical view cutaway drawings of fixed block, and Fig. 3 is an arc generating device of the present invention circuit diagram when using.

Embodiment

Embodiment one: shown in Fig. 1～2, the arc generating device of the testing electric switch contact material of present embodiment comprises base plate 1, bearing seat 2, regulating shaft 3, fixed block 4, adjust piece 5, two guide rails 6, first insulcrete 7, second insulcrete 8, first anchor clamps 9, second anchor clamps 10, two binding posts 11, clutch shaft bearing 12, second bearing 13 and adjusting handle 18, described bearing seat 2 is packed in the end on base plate 1 upper surface, described fixed block 4 correspondences are packed in the other end on base plate 1 upper surface, the middle part of described fixed block 4 axially has a ladder hole 4-1 along bearing seat 2, described second bearing 13 is installed in the ladder hole 4-1 of fixed block 4, one end of described regulating shaft 3 is installed on the bearing seat 2 by clutch shaft bearing 12, the other end of described regulating shaft 3 is installed on second bearing 13 in the fixed block 4, outside surface on the described regulating shaft 3 between bearing seat 2 and fixed block 4 is processed with screw thread, the middle part of described adjustment piece 5 axially has a tapped through hole 5-1 along bearing seat 2, described adjustment piece 5 is between fixed block 4 and bearing seat 2, described adjustment piece 5 is installed on the regulating shaft 3 and between the two and is threaded, described two guide rails 6 be arranged in parallel between the both sides of regulating shaft 3 and three, one end of every guide rail 6 is packed on the fixed block 4, the other end of every guide rail 6 is inserted into to adjust on the piece 5 and with adjustment piece 5 and is slidingly connected, leave the gap between the upper surface of the lower surface of described adjustment piece 5 and base plate 1, described first insulcrete 7 is packed on the upper surface of fixed block 4, described second insulcrete 8 is packed on the upper surface of adjusting piece 5, described first anchor clamps 9 are installed on the upper surface of first insulcrete 7, described second anchor clamps 10 are installed on the upper surface of second insulcrete 8, and first anchor clamps 9 and the 10 opposing parallel settings of second anchor clamps, on described first anchor clamps 9 and second anchor clamps 10 binding post 11 is installed all, the upper surface of the upper surface of described first insulcrete 7 and second insulcrete 8 is on same surface level, described first anchor clamps 9 and second anchor clamps 10 are made by metal material, are installed with adjusting handle 18 on the described regulating shaft 3.

Embodiment two: as shown in Figure 1, described first anchor clamps 9 of present embodiment and second anchor clamps 10 constitute by last anchor clamps 14 and lower clamp 15, have first manhole 14-1 that two～seven diameter do not wait on the lower surface of described upward anchor clamps 14, correspondence has the lower semi-circular through hole 15-1 that two～seven diameter do not wait on the upper surface of described lower clamp 15, the consistent setting of quantity of the quantity of described first manhole 14-1 and lower semi-circular through hole 15-1, the described anchor clamps 14 of going up are installed on the upper surface of lower clamp 15, and first manhole 14-1 and the lower semi-circular through hole 15-1 on the lower clamp 15 that go up on the anchor clamps 14 are oppositely arranged two～seven manholes 16 that diameter does not wait of formation.So design can correspondingly be installed the electric switch contact material that diameter does not wait on first anchor clamps 9 and second anchor clamps 10, and other composition and annexation are identical with embodiment one.

Embodiment three: as shown in Figure 1, the diameter of the described manhole 16 of present embodiment is 1～10mm.So design can correspondingly be installed the electric switch contact material that diameter does not wait on first anchor clamps 9 and second anchor clamps 10, and other composition and annexation are identical with embodiment two.

Embodiment four: the helical pitch of the screw thread on the described regulating shaft 3 of present embodiment is 1mm.Helical pitch is meant the axial distance of adjacent two tooth corresponding point on the helix of regulating shaft 3.So design can realize exchanging monoblock 5 along the fine setting on regulating shaft 3 directions when rotating regulating shaft 3.Other composition and annexation are identical with embodiment one, two or three.

Embodiment five: shown in Fig. 1～2, the described clutch shaft bearing 12 of present embodiment and second bearing 13 are ball bearing. and so design, can limit axially, radially going here and there of regulating shaft 3 and move. other composition and annexation are identical with embodiment four.

Embodiment six: as shown in Figure 1, described first anchor clamps 9 of present embodiment become by copper with second anchor clamps 10.The effect that reduces loop resistance is played in so design.Other composition and annexation are identical with embodiment one, two, three or five.

Embodiment seven: as shown in Figure 1, described arc generating device also comprises index dial 17, described index dial 17 is sleeved on the regulating shaft 3 and the lower end of index dial 17 is fixed on the upper surface of base plate 1, the pointer of index dial 17 be installed on the regulating shaft 3 and with adjusting handle 18 adjacent settings.The regulated quantity that can accurately regulate adjusting handle 18 so is set.Other composition and annexation are identical with embodiment six.

Principle of work:

As shown in figures 1 and 3, during use, two binding posts 11 of the input/output terminal of power supply and arc generating device of the present invention constitute the loop, and reometer and slide rheostat are connected on the described loop, and arc generating device of the present invention is in parallel with voltage table; Surface high precision coated abrasive working with two electric switch contact materials to be tested, end with two electric switch contact materials to be tested inserts respectively in the manhole 16 of two correspondences on first anchor clamps 9 and second anchor clamps 10 then, the other end of two electric switch contact materials to be tested is oppositely arranged, opening power, adjust output voltage, powered-down then; Manually rotate adjusting handle 18, adjusting handle 18 rotates and drives regulating shaft 3 rotations, the other end of two electric switch contact materials to be tested is just contacted, whether be communicated with the multimeter observation circuit this moment, write down electric current and the magnitude of voltage that different electrodes are opened distance respectively by manual rotation adjusting handle 18, regulate the resistance value of slide rheostat, write down electric current and magnitude of voltage that different resistance, different electrode are opened distance, draw quiescent current and voltage characteristic under the different arc according to test gained data.

Claims

1. An arc generating device for testing electrical switch contact materials, characterized in that: the arc generating device includes a base plate (1), a bearing seat (2), an adjustment shaft (3), a fixed block (4), and an adjustment block (5), two guide rails (6), the first insulating plate (7), the second insulating plate (8), the first clamp (9), the second clamp (10), two terminal posts (11), the first A bearing (12), a second bearing (13) and an adjustment handle (18), the bearing seat (2) is fixed on one end of the upper end surface of the base plate (1), and the fixed block (4) is correspondingly fixed on the On the other end of the upper end surface of the bottom plate (1), the middle part of the fixed block (4) has a stepped through hole (4-1) along the axial direction of the bearing seat (2), and the second bearing (13) is installed on In the stepped through hole (4-1) of the fixed block (4), one end of the adjustment shaft (3) is installed on the bearing seat (2) through the first bearing (12), and the other end of the adjustment shaft (3) One end is installed on the second bearing (13) in the fixed block (4), and the outer surface of the adjustment shaft (3) between the bearing seat (2) and the fixed block (4) is processed with threads, and the The middle part of the adjustment block (5) has a threaded through hole (5-1) along the axial direction of the bearing seat (2), and the adjustment block (5) is located between the fixed block (4) and the bearing seat (2). The adjustment block (5) is installed on the adjustment shaft (3) and threaded between the two, the two guide rails (6) are located on both sides of the adjustment shaft (3) and arranged in parallel between the three, each guide rail One end of (6) is fixed on the fixed block (4), and the other end of each guide rail (6) is inserted on the adjustment block (5) and is slidably connected with the adjustment block (5), and the adjustment block (5) There is a gap between the lower end surface of the bottom plate (1) and the upper end surface of the bottom plate (1), the first insulating plate (7) is fixed on the upper end surface of the fixed block (4), and the second insulating plate (8) is fixed On the upper end surface of the adjustment block (5), the first clamp (9) is installed on the upper end surface of the first insulating plate (7), and the second clamp (10) is installed on the second insulating plate (8) On the upper end surface of the first clamp (9) and the second clamp (10) are arranged relatively parallel, and a terminal (11) is installed on the first clamp (9) and the second clamp (10), so The upper end surface of the first insulating plate (7) and the upper end surface of the second insulating plate (8) are on the same horizontal plane, and the first clamp (9) and the second clamp (10) are made of metal materials, An adjustment handle (18) is sheathed on the adjustment shaft (3).

2. the arc generating device of testing electrical switch contact material according to claim 1, is characterized in that: described first clamp (9) and second clamp (10) are all made of upper clamp (14) and lower clamp ( 15) Composition, two to seven upper semicircular through holes (14-1) with different diameters are opened on the lower end surface of the upper clamp (14), and the upper end surface of the lower clamp (15) corresponds to There are two to seven lower semicircular through holes (15-1) with different diameters, and the number of the upper semicircular through holes (14-1) is the same as that of the lower semicircular through holes (15-1). The number of consistent settings, the upper clamp (14) is installed on the upper end surface of the lower clamp (15), and the upper semicircular through hole (14-1) on the upper clamp (14) and the lower clamp (15) The lower semicircular through holes (15-1) are arranged oppositely to form two to seven circular through holes (16) with different diameters.

3. The arc generating device for testing electrical switch contact materials according to claim 2, characterized in that: the diameter of the circular through hole (16) is 1-10 mm.

4. The arc generating device for testing electrical switch contact materials according to claim 1, 2 or 3, characterized in that: the lead of the thread on the adjusting shaft (3) is 1 mm.

5. The arc generating device for testing electrical switch contact materials according to claim 4, characterized in that: the first bearing (12) and the second bearing (13) are both ball bearings.

6. The arc generating device for testing electrical switch contact materials according to claim 1, 2, 3 or 5, characterized in that: the first clamp (9) and the second clamp (10) are all made of copper .

7. The arc generating device for testing electrical switch contact materials according to claim 6, characterized in that: the arc generating device also includes a dial (17), and the dial (17) is sleeved on the adjustment shaft (3 ) and the lower end of the dial (17) is fixed on the upper surface of the base plate (1), and the pointer of the dial (17) is installed on the adjustment shaft (3) and is adjacent to the adjustment handle (18).