CN212845598U - Contact resistance testing assembly of molded case circuit breaker - Google Patents

Abstract

The utility model discloses moulded case circuit breaker contact resistance test assembly, it includes: the limiting mechanism is used for limiting the horizontally conveyed molded case circuit breaker; the jacking mechanism is arranged on one side of the limiting mechanism and used for driving the limited molded case circuit breaker to lift; the two rows of voltage probe mechanisms are arranged on two sides of the molded case circuit breaker and can be electrically connected with the molded case circuit breaker; and the two groups of horizontal mechanisms correspond to the two rows of voltage probe mechanisms one by one and are positioned on two sides of the jacking mechanism and are used for driving the two rows of voltage probe mechanisms to move in opposite directions or in opposite directions. The utility model discloses moulded case circuit breaker contact resistance test assembly can realize accurate butt joint, compact structure, the mechanism reliable and stable of contact resistance voltage probe mechanism and moulded case circuit breaker outgoing line copper bar through adopting specific structure, and degree of automation is high, has improved efficiency of software testing.

Description

Contact resistance testing assembly of molded case circuit breaker

Technical Field

The utility model belongs to automation equipment test field, concretely relates to moulded case circuit breaker contact resistance test assembly.

Background

A Molded Case Circuit Breaker (MCCB) is a mechanical switching device that can be switched on, carry a certain time, and break a current under normal and abnormal Circuit conditions, and can automatically cut off the current after the current exceeds a trip setting, thereby protecting equipment and circuits; the molded case circuit breaker is mainly used in an AC/DC network and is used for power distribution or protecting overload, short circuit, undervoltage and overvoltage of a motor.

After the moulded case circuit breaker is manufactured, contact resistance testing is required to be carried out to ensure that each moulded case circuit breaker product leaving the factory is a qualified product, and the existing moulded case circuit breaker contact resistance testing assembly is simple in structure and difficult to be matched with an automatic assembly line of the moulded case circuit breaker to detect the moulded case circuit breaker.

Disclosure of Invention

The utility model aims at providing a moulded case circuit breaker contact resistance test assembly in order to overcome prior art not enough.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a contact resistance test assembly of a molded case circuit breaker, comprising:

the limiting mechanism is used for limiting the horizontally conveyed molded case circuit breaker;

the jacking mechanism is arranged on one side of the limiting mechanism and used for driving the limited molded case circuit breaker to lift;

the two rows of voltage probe mechanisms are arranged on two sides of the molded case circuit breaker and can be electrically connected with the molded case circuit breaker;

and the two groups of horizontal mechanisms correspond to the two rows of voltage probe mechanisms one by one and are positioned on two sides of the jacking mechanism and are used for driving the two rows of voltage probe mechanisms to move in opposite directions or in opposite directions.

Preferably, the voltage probe mechanism comprises a main copper pole, an auxiliary copper pole and an insulating block, wherein the auxiliary copper pole is connected with one end of the main copper pole through a rotating shaft phase pivot, and the insulating block is connected with one end of the main copper pole through a rotating shaft phase pivot and is positioned between the main copper pole and the auxiliary copper pole to separate the main copper pole from the auxiliary copper pole.

Preferably, the jacking mechanism comprises a second mounting plate, at least two second guide pillars penetrating through the second mounting plate, a second support plate arranged at the end part of the second guide pillar in a lifting manner, and at least two jacking support frames arranged on two sides of the second support plate and used for supporting the molded case circuit breaker.

Preferably, the limiting mechanism comprises at least two third guide posts penetrating through the second mounting plate, a third support plate arranged at the end parts of the two third guide posts in a lifting manner, at least two third mounting plates arranged at two ends of the third support plate, and a limiting stop arranged on the third mounting plate and used for limiting the molded case circuit breaker. The limit stop can accurately position the molded case circuit breaker, and the accuracy of subsequent test results is improved.

Preferably, each group of horizontal mechanisms comprises a first mounting plate, a first support plate arranged on one side of the first mounting plate, at least two first guide pillars penetrating through the first support plate, a sliding plate movably arranged at the end part of the first guide pillar, a first mounting table arranged on the side surface of the sliding plate far away from the first support plate, and a plurality of fourth guide pillars penetrating through the first mounting table and having end parts provided with the voltage probe mechanisms.

Preferably, the horizontal mechanism further comprises a first cylinder mounted on the side surface of the first support plate, at least two first guide sleeves fixed on the sliding plate and matched with the first guide pillars, and a plurality of fourth guide sleeves penetrating through the first mounting table and used for fixing the fourth guide pillars; the first cylinder piston rod penetrates through the first supporting plate to extend to be connected with the sliding plate.

Preferably, the jacking mechanism further comprises a second cylinder mounted on the second mounting plate and at least two second guide sleeves fixed on the second mounting plate and matched with the second guide columns; the second cylinder piston rod passes through the second mounting panel and extends to be connected with the second backup pad.

Optimally, the limiting mechanism further comprises a third air cylinder arranged on the second mounting plate and at least two third guide sleeves fixed on the second mounting plate and matched with the third guide columns; the third cylinder piston rod passes through the second mounting plate and extends to and the third support plate is connected, and limit stop is located one side that the third mounting plate is close to moulded case circuit breaker.

Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages: the utility model discloses moulded case circuit breaker contact resistance test assembly, horizontal movement mechanism and contact resistance voltage probe subassembly through adopting specific structure, perpendicular climbing mechanism cooperates with moulded case circuit breaker jacking bottom plate and jacking supporting rack, can drive contact resistance voltage probe subassembly like this and remove on the horizontal plane and moulded case circuit breaker upwards rises in the vertical direction, thereby realize the accurate butt joint of contact resistance voltage probe subassembly and moulded case circuit breaker outgoing line copper bar, compact structure, the mechanism is reliable and stable, the internal resistance error of artificial detection contact resistance and wire has been eliminated simultaneously, thereby realize contact resistance's accurate test, the degree of automation is high, and the test efficiency is improved.

Drawings

Fig. 1 is a main view axis side view of the contact resistance testing assembly of the molded case circuit breaker of the present invention;

fig. 2 is a rear perspective view of the contact resistance testing assembly of the molded case circuit breaker of the present invention;

fig. 3 is a schematic structural view of the horizontal mechanism of the present invention;

fig. 4 is a schematic structural view of the horizontal mechanism of the present invention with the first mounting platform removed;

fig. 5 is a position relation diagram of the jacking mechanism and the limiting mechanism of the present invention;

fig. 6 is a schematic structural view of the jacking mechanism of the present invention;

fig. 7 is a schematic structural view of the limiting mechanism of the present invention;

FIG. 8 is a schematic structural view of the voltage probe assembly of the present invention;

FIG. 9 is an exploded view of the voltage probe assembly of the present invention;

description of reference numerals:

11. a slide plate; 12. a first mounting plate; 13. a first support plate; 14. a first cylinder; 15. a first guide post; 16. a first guide sleeve; 17. a first mounting table; 18. a fourth guide post; 19. a fourth guide sleeve;

21. a second cylinder; 22. a second guide post; 23. a second guide sleeve; 24. a second support plate; 25. jacking support frames 26 and a second mounting plate;

31. a third cylinder; 32. a third guide post; 33. a third guide sleeve; 34. a third support plate; 35. a third mounting plate; 36. a limit stop block;

40. a voltage probe mechanism; 41. a main copper electrode; 42. a secondary copper electrode; 43. an insulating block; 44. a rotating shaft;

50. a molded case circuit breaker.

Detailed Description

The invention will be further described with reference to examples of embodiments shown in the drawings.

The molded case circuit breaker contact resistance testing assembly shown in fig. 1 to 9 is used for testing contact resistance of a molded case circuit breaker 50 (the molded case circuit breaker contact resistance testing assembly is generally correspondingly installed on an automatic assembly line of the molded case circuit breaker to automatically test the continuously conveyed molded case circuit breaker, and can also be installed on a testing machine to test a single molded case circuit breaker), and mainly comprises a limiting mechanism, a jacking mechanism, two rows of voltage probe mechanisms 40, two groups of horizontal mechanisms and the like.

The two rows of voltage probe mechanisms 40 are disposed at two sides of the molded case circuit breaker 50 and can be electrically connected to the molded case circuit breaker 50 (i.e., one or more molded case circuit breakers 50 are disposed between the two rows of voltage probe mechanisms 40, and each test makes the two rows of voltage probe mechanisms 40 contact with one molded case circuit breaker 50). Each row of the voltage probe mechanism 40 mainly includes a main copper pole 41, an auxiliary copper pole 42, a rotating shaft 44, an insulating block 43, and the like. The main copper pole 41 is the main body of the voltage probe mechanism 40 (the main copper pole 41 is an irregular copper block divided into a front section, a connecting section and a rear section, the front section and the rear section are substantially square, but the cross-sectional area of the front section is smaller than that of the rear section, as shown in fig. 8 and 9). Vice copper pole 42 is through pivot 44 looks pivot connection (in this embodiment, pivot 44 is the cylinder, and vice copper pole 42 is for being enclosed by three copper sheet integrations, and its connected mode is not the utility model discloses a protection is important, as long as realize that main copper pole 41 and vice copper pole 42 are through pivot 44 looks pivot connection can, if correspond the position trompil at main copper pole 41 and vice copper pole 42, can realize the connection in passing the hole with cylinder pivot 44). The insulation block 43 is pivotally connected to one end of the main copper pole 41 by a rotating shaft 44, and is located between and separates the main copper pole 41 and the auxiliary copper pole 42 (the structure of the insulation block 43 is similar to that of the auxiliary copper pole 42, and is made of an insulation material and is sleeved on the auxiliary copper pole 42 to separate the main copper pole 41 and the auxiliary copper pole 42; in this embodiment, a hole is also formed at a corresponding position of the insulation block 43, and the cylindrical rotating shaft 44 is inserted into the holes of the insulation block 43, the main copper pole 41 and the auxiliary copper pole 42, and it should be noted that the separation can be achieved only when the insulation block 43 is located between the main copper pole 41 and the auxiliary copper pole 42).

The jacking mechanism is arranged on one side of the limiting mechanism and used for driving the limited molded case circuit breaker 50 to lift (namely, the jacking mechanism drives the limited molded case circuit breaker 50 to lift and prepare for resistance testing on the next step). The device mainly comprises a second cylinder 21, a second guide pillar 22, a second guide sleeve 23, a second support plate 24, a jacking support frame 25, a second mounting plate 26 and the like. The second mounting plate 26 is installed on the test machine table (the second mounting plate 26 can be installed by adopting common bolt and nut matching).

The second guide posts 22 are at least two and they pass through the second mounting plate 26 (in this embodiment, the number of the second guide posts 22 is two). The second cylinder 21 is installed on the second mounting panel 26 (the second cylinder 21 is a common single-acting cylinder, and its specific type is not the protection of the utility model discloses a key point, as long as realize the installation on the second mounting panel 26 can, the mounting means is like common bolt and nut cooperation). The second support plate 24 is installed at the end of the second guide post 22 in a liftable manner (the second support plate 24 is a rectangular plate, the specific shape of which is not the protection focus of the present invention, and only needs to connect the second support plate 24 at the end of the second guide post 22; in this embodiment, the second support plate 24 is lifted and lowered by the second cylinder 21, for example, the piston rod of the second cylinder 21 is extended to be connected with the second support plate 24 through the second mounting plate 26). The number of the jacking support frames 25 is at least two, and they are installed on two sides of the second support plate 24 and used for supporting the molded case circuit breaker 50 (in this embodiment, the number of the jacking support frames 25 is two, and the installation mode can adopt common bolt and nut cooperation). And at least two second guide sleeves 23 which are fixed on the second mounting plate 26 (the number of the second guide sleeves 23 is two, the second guide sleeves are matched with the second guide post 22, and the fixing mode can use common bolt and nut matching).

The limiting mechanism is used for limiting the horizontally conveyed molded case circuit breaker 50 (namely, limiting the horizontally conveyed molded case circuit breaker 50 to prepare for the next step of jacking movement of the molded case circuit breaker 50). The device mainly comprises a third cylinder 31, a third guide pillar 32, a third guide sleeve 33, a third support plate 34, a third mounting plate 35, a limit stop 36 and the like. At least two third guide posts 32 pass through the second mounting plate 26 (in this embodiment, the number of the third guide posts 32 is two). The third cylinder 31 is installed on the second mounting plate 26 (the third cylinder 31 is a common single-acting cylinder, and its specific type is not the focus of the protection of the present invention, as long as the installation on the second mounting plate 26 is realized, such as the cooperation of common bolt and nut). The third supporting plate 34 is installed at the end of the third guide post 32 in a liftable manner (the third supporting plate 34 is a rectangular plate, the specific shape of which is not the protection focus of the present invention, as long as the third supporting plate 34 is connected to the end of the third guide post 32; in this embodiment, the third supporting plate 34 is lifted by the third cylinder 31, such as extending the piston rod of the third cylinder 31 through the second mounting plate 26 to be connected to the third supporting plate 34). The third mounting plates 35 are at least two, and they are installed at two ends of the third support plate 34 (in this embodiment, the number of the third mounting plates 35 is two, and the installation mode can be selected from common bolt and nut connection). At least two third guide sleeves 33 are mounted on the second mounting plate 26 (in this embodiment, the number of the third guide sleeves 33 is two and is used in cooperation with the third guide post 32, and the fixing manner can be common bolt and nut cooperation). Limit stop 36 is installed on third mounting panel 35 and is used for spacing moulded case circuit breaker 50 (in this embodiment, limit stop 36 is located third mounting panel 35 and is close to one side of moulded case circuit breaker 50, and fixed mode can select for use bolt and nut cooperation or bonding).

The two sets of horizontal mechanisms are in one-to-one correspondence with the two rows of voltage probe mechanisms 40 and are located on two sides of the jacking mechanism, and are used for driving the two rows of voltage probe mechanisms 40 to move in opposite directions or in opposite directions (namely, the two sets of horizontal mechanisms respectively drive the two rows of voltage probe mechanisms 40 to move towards a direction close to or away from the molded case circuit breaker 50). Each group of horizontal mechanism mainly comprises a sliding plate 11, a first mounting plate 12, a first supporting plate 13, a first air cylinder 14, a first guide pillar 15, a first guide sleeve 16, a first mounting table 17, a fourth guide pillar 18, a fourth guide sleeve 19 and the like. The first mounting plate 12 is mounted on the horizontal base table (the fixation of the first mounting plate 12 can be realized by adopting the common matching of bolts and nuts). First backup pad 13 is fixed in first mounting panel 12 one side (in this embodiment, first backup pad 13 is the rectangular plate, and its specific shape is not the protection of the utility model is important, as long as realize first backup pad 13 in the fixed of first mounting panel 12 one side can, if adopt the connection of generally common bolt and nut). The first guide posts 15 are at least two and penetrate through the first support plate 13 (the number of the first guide posts 15 is two). First cylinder 14 is installed in first backup pad 13 side (first cylinder 14 is the single-acting type cylinder of general common, and its specific type is not the key point of the utility model protection, as long as realize the installation on first backup pad 13 side can, if connect with general common bolt, nut). The slide plate 11 is slidably mounted on the end of the first guide post 15 (the slide plate 11 is a rectangular plate, and its specific shape is not a key protection point of the present invention, as long as the slide plate 11 is connected to the end of the first guide post 15; in this embodiment, the slide plate 11 is moved by means of the first cylinder 14, such as extending the piston rod of the first cylinder 14 through the first support plate 13 to connect with the slide plate 11). The number of the first guide sleeves 16 is two, and the first guide sleeves 16 are fixed on the sliding plate 11 (the number of the first guide sleeves 16 is two, and the first guide sleeves are used in cooperation with the first guide post 15, and the fixing mode can use common bolt and nut connection). The first mounting table 17 is mounted on the side of the sliding plate 11 away from the first supporting plate 13 (the mounting of the first mounting table 17 can be realized by the cooperation of bolts and nuts). The fourth guide post 18 has a plurality of portions which pass through the first mounting stage 17 and fix the voltage probe mechanism 40 (in the present embodiment, the end portion of the fourth guide post 18 is used to fix the main copper pole 41 of the voltage probe mechanism 40). The fourth guide sleeve 19 is provided in plural, and penetrates through the first mounting table 17 for fixing the fourth guide post 18 (the fourth guide sleeve 19 is used in cooperation with the fourth guide post 18).

In the use process of the contact resistance testing assembly for the molded case circuit breaker, the third cylinder 31 drives the third supporting plate 34 to realize ascending motion, so that the molded case circuit breaker 50 conveyed to the position is limited and does not move forwards continuously; under the driving of the second cylinder 21, the jacking support frame 25 and the second support plate 24 ascend together, and the molded case circuit breaker 50 is also lifted synchronously to be level with the horizontal mechanisms on the two sides; under the driving of the first cylinder 14, the voltage probe mechanisms 40 on the two sides of the jacking mechanism simultaneously move towards the direction close to the molded case circuit breaker 50 until the secondary copper poles 42 of the two rows of voltage probe mechanisms 40 are in contact with the molded case circuit breaker 50; at this time, the resistance value of the molded case circuit breaker 50 is measured and data is recorded, then each mechanism returns to the original position, and the steps are repeated to detect the resistance value of the next molded case circuit breaker 50.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims (8)

1. The utility model provides a moulded case circuit breaker contact resistance test assembly which characterized in that, it includes:

the limiting mechanism is used for limiting a horizontally conveyed molded case circuit breaker (50);

the jacking mechanism is arranged on one side of the limiting mechanism and used for driving the limited molded case circuit breaker (50) to lift;

two rows of voltage probe mechanisms (40), wherein the two rows of voltage probe mechanisms (40) are arranged on two sides of the molded case circuit breaker (50) and can be electrically connected with the molded case circuit breaker (50);

and the two groups of horizontal mechanisms correspond to the two rows of voltage probe mechanisms (40) one by one and are positioned on two sides of the jacking mechanism and are used for driving the two rows of voltage probe mechanisms (40) to move towards or away from each other.

2. The molded case circuit breaker contact resistance testing assembly of claim 1, wherein: the voltage probe mechanism (40) comprises a main copper pole (41), an auxiliary copper pole (42) and an insulating block (43), wherein the auxiliary copper pole (42) is in pivot connection with one end of the main copper pole (41) through a rotating shaft (44), one end of the main copper pole (41) is in pivot connection with one end of the main copper pole (41) through the rotating shaft (44), and the insulating block (43) is located between the main copper pole (41) and the auxiliary copper pole (42) and separates the main copper pole from the auxiliary copper pole.

3. The molded case circuit breaker contact resistance testing assembly of claim 1, wherein: the jacking mechanism comprises a second mounting plate (26), at least two second guide posts (22) penetrating through the second mounting plate (26), a second support plate (24) arranged at the end parts of the second guide posts (22) in a lifting mode, and at least two jacking support frames (25) arranged on two sides of the second support plate (24) and used for supporting the molded case circuit breaker (50).

4. The molded case circuit breaker contact resistance testing assembly of claim 3, wherein: the limiting mechanism comprises at least two third guide posts (32) penetrating through the second mounting plate (26), a third support plate (34) arranged at the end parts of the two third guide posts (32) in a lifting manner, at least two third mounting plates (35) arranged at two ends of the third support plate (34), and a limiting stop (36) arranged on the third mounting plates (35) and used for limiting the molded case circuit breaker (50).

5. The molded case circuit breaker contact resistance testing assembly of any one of claims 1 to 4, wherein: each group of horizontal mechanisms comprises a first mounting plate (12), a first supporting plate (13) arranged on one side of the first mounting plate (12), at least two first guide columns (15) penetrating through the first supporting plate (13), a sliding plate (11) movably mounted at the end part of the first guide columns (15), a first mounting table (17) arranged on the side surface of the sliding plate (11) far away from the first supporting plate (13), and a plurality of fourth guide columns (18) penetrating through the first mounting table (17) and mounted at the end parts of the voltage probe mechanisms (40).

6. The molded case circuit breaker contact resistance testing assembly of claim 5, wherein: the horizontal mechanism further comprises a first air cylinder (14) arranged on the side surface of the first supporting plate (13), at least two first guide sleeves (16) which are fixed on the sliding plate (11) and matched with the first guide columns (15), and a plurality of fourth guide sleeves (19) which penetrate through the first mounting table (17) and are used for fixing the fourth guide columns (18); the piston rod of the first air cylinder (14) penetrates through the first supporting plate (13) to be connected with the sliding plate (11).

7. The molded case circuit breaker contact resistance testing assembly of claim 3, wherein: the jacking mechanism also comprises a second cylinder (21) arranged on the second mounting plate (26) and at least two second guide sleeves (23) which are fixed on the second mounting plate (26) and matched with the second guide columns (22); the piston rod of the second cylinder (21) penetrates through a second mounting plate (26) to be connected with the second support plate (24).

8. The molded case circuit breaker contact resistance testing assembly of claim 4, wherein: the limiting mechanism further comprises a third air cylinder (31) arranged on the second mounting plate (26) and at least two third guide sleeves (33) which are fixed on the second mounting plate (26) and matched with the third guide columns (32); the piston rod of the third cylinder (31) penetrates through the second mounting plate (26) to extend to be connected with the third supporting plate (34), and the limit stop (36) is located on one side, close to the molded case circuit breaker (50), of the third mounting plate (35).

Images