CN107790911B - Welding device for main shaft crank arm of circuit breaker - Google Patents
Welding device for main shaft crank arm of circuit breaker Download PDFInfo
- Publication number
- CN107790911B CN107790911B CN201711116137.3A CN201711116137A CN107790911B CN 107790911 B CN107790911 B CN 107790911B CN 201711116137 A CN201711116137 A CN 201711116137A CN 107790911 B CN107790911 B CN 107790911B
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- Prior art keywords
- crank arm
- positioning
- main shaft
- locating
- angle
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
Abstract
The utility model relates to a welding device for a main shaft crank arm of a circuit breaker, which comprises a supporting seat and a supporting column vertically arranged on the supporting seat, wherein the supporting seat is provided with a main shaft supporting surface which is used for sliding and supporting and matching with one end face of a main shaft, at least two crank arm positioning pieces which are used for positioning and matching with the main shaft and positioning corresponding crank arms on the main shaft are rotatably assembled on the supporting column, and each crank arm positioning piece comprises an angle positioning part which is used for positioning and matching with the corresponding crank arms so as to keep relative angles between the crank arms. Through installing the support post of perpendicular to supporting seat on the supporting seat to rotate the assembly turning arm setting element on the support post, make the angle location part on the turning arm setting element carry out angle location to each turning arm, guaranteed can rotate main shaft and turning arm when the welding so that the staff need not be used for the rebound just can weld the circumference contact surface of main shaft and turning arm, improved work efficiency.
Description
Technical Field
The utility model relates to a welding device for a main shaft crank arm of a circuit breaker.
Background
In the prior art, the vacuum circuit breaker is widely applied because the arc extinguishing medium and the insulating medium of the contact gap after arc extinction are high vacuum, and has the advantages of small volume, light weight, suitability for frequent operation, no maintenance for arc extinction and the like.
The mechanical characteristics of the vacuum circuit breaker enable the vacuum circuit breaker to work normally, and the mechanical characteristics are determined by an operating mechanism of the circuit breaker, wherein a main shaft of the vacuum circuit breaker plays an important transmission role in the operating process of the operating mechanism, as shown in fig. 1, three pairs of first crank arms 11, second crank arms 12 and third crank arms 13 are arranged on the main shaft 10, wherein the first crank arms 11 and the third crank arms 13 are formed by two crank arm sheets, the distances and included angles among the crank arms are required to be strictly consistent, otherwise, the assembly efficiency and the operating performance of the whole circuit breaker are affected, and in the prior art, the first crank arms 11 and the third crank arms 13 are also formed by one crank arm sheet. Aiming at the problems, the Chinese patent utility model with the authorized bulletin number of CN204117896U and the authorized bulletin day of 2015.01.21 discloses a welding fixture for an isolation spindle of a column switch, which consists of a base, a limiting crank positioning block, a pull rod crank positioning press block, an interlocking crank positioning block and a stop block, wherein the positioning block is formed by assembling a corresponding positioning seat and a positioning press block through a screw rod, a first limiting crank positioning seat, a first pull rod crank positioning seat, a second pull rod crank positioning seat, an interlocking crank positioning seat, a third pull rod crank positioning seat, a second limiting crank positioning seat and the stop block are sequentially welded on the base corresponding to the spindle, lower semicircular notches of the positioning seats and upper semicircular notches of the corresponding positioning press blocks are assembled into shaft holes, the first and second limiting crank positioning seats are provided with two cylindrical positioning pin holes I, the first and second and third pull rod crank positioning press blocks are provided with cylindrical positioning pin holes II, and the interlocking crank positioning seats and the interlocking crank positioning press blocks are respectively provided with square column pin holes. The welding tool cannot rotate when the main shaft and the crank arm are welded, a worker needs to adjust the position to weld the circumferential contact surface of the main shaft and the crank arm, circumferential welding of the main shaft is inconvenient, and working efficiency is reduced.
Disclosure of Invention
The utility model aims to provide a welding device for a main shaft crank arm of a circuit breaker, which aims to solve the problem that in the prior art, when a welding tool welds the circumferential contact surface of the main shaft and the crank arm, a worker is required to adjust the position, so that the circumferential welding of the main shaft is inconvenient.
In order to achieve the above purpose, the first technical scheme of the welding device for the main shaft crank arm of the circuit breaker is as follows: the welding device for the crank arms of the circuit breaker main shaft comprises a supporting seat and a supporting upright post vertically arranged on the supporting seat, wherein the supporting seat is provided with a main shaft supporting surface which is used for being in sliding supporting fit with the end face of one end of the main shaft, at least two crank arm positioning pieces which are used for being in positioning fit with the main shaft and positioning the corresponding crank arms on the main shaft are rotatably assembled on the supporting upright post, and each crank arm positioning piece comprises an angle positioning part which is used for being in positioning fit with the corresponding crank arms so as to keep relative angles between the crank arms; the support upright post is provided with an upright post axial positioning part matched with the space between corresponding crank arms on the main shaft, or the crank arm positioning piece comprises a crank arm axial positioning part matched with the space between corresponding crank arms on the main shaft.
The second technical scheme of the welding device for the main shaft crank arm of the circuit breaker is as follows: on the basis of the first technical scheme of the welding device for the main shaft turning arm of the circuit breaker, the angle positioning part is provided with a positioning piece rotating hole in rotating fit with the supporting upright post, and the turning arm positioning piece is rotationally assembled on the supporting upright post through the positioning piece rotating hole. The length of the angle positioning part in the axial direction is shorter, and the rotating hole of the positioning piece is formed in the angle positioning part, so that materials can be reduced, and the cost is reduced.
The third technical scheme of the welding device for the main shaft crank arm of the circuit breaker is as follows: on the basis of the second technical scheme of the welding device for the main shaft crank arm of the circuit breaker, the crank arm positioning piece comprises a crank arm axial positioning part which is used for being matched with the interval between corresponding crank arms on the main shaft, and the crank arm positioning piece is assembled on the supporting upright post in a guiding sliding way. The crank arm locating piece is assembled on the supporting seat in a sliding mode, so that the crank arm locating piece can be moved and detached, and the crank arm locating piece can be adjusted or replaced according to different crank arms on the main shaft.
The fourth technical scheme of the welding device for the main shaft crank arm of the circuit breaker is as follows: on the basis of the third technical scheme of the welding device for the main shaft crank arm of the circuit breaker, the crank arm positioning piece comprises a tile-shaped positioning plate which extends along the axial direction of the supporting upright post and is used for positioning and matching with the main shaft, the outer circumferential surface of the tile-shaped positioning plate is provided with an angle positioning seat which extends along the radial direction, the tile-shaped positioning plate forms a crank arm axial positioning part, the angle positioning seat forms an angle positioning part, the positioning piece rotating hole is arranged on the angle positioning seat, the angle positioning seat is also provided with an angle positioning hole which is used for positioning and matching with a mounting hole of the corresponding crank arm so as to position and match with the main shaft, and the crank arm positioning piece is positioned and matched with the main shaft through the tile-shaped positioning plate.
The fifth technical scheme of the welding device for the main shaft crank arm of the circuit breaker is as follows: on the basis of the fourth technical scheme of the welding device for the main shaft crank arm of the circuit breaker, the crank arm positioning pieces are arranged in pairs, the notch of the tile-shaped positioning plate of the same pair of crank arm positioning pieces is oppositely arranged to enclose a channel for the main shaft to pass through, and the angle positioning holes on the angle positioning seats of the same pair of crank arm positioning pieces are aligned so that the same pair of crank arm positioning pieces correspond to one crank arm. The crank arm locating pieces are arranged in pairs, so that the stability of the main shaft fixation can be ensured.
The sixth technical scheme of the welding device for the main shaft crank arm of the circuit breaker is as follows: on the basis of the fifth technical scheme of the welding device for the main shaft crank arm of the circuit breaker, the two angle positioning seats of the same pair of crank arm positioning pieces are mutually attached. The two angle positioning seats are mutually attached and processed conveniently, and are convenient to cooperate.
The seventh technical scheme of the welding device for the main shaft crank arm of the circuit breaker is as follows: on the basis of any one of the fourth to sixth technical schemes of the welding device for the main shaft crank arm of the circuit breaker, the angle positioning seat further comprises a positioning bolt for positioning and matching the angle positioning hole and the mounting hole of the crank arm and a nut matched with the positioning bolt. The main shaft and the crank arm ensure the required positioning angle through the positioning of the positioning bolt.
The eighth technical scheme of the welding device for the main shaft crank arm of the circuit breaker is as follows: on the basis of the seventh technical scheme of the welding device for the main shaft crank arm of the circuit breaker, the positioning bolt is sleeved with the spacer bush which is used for being placed between the two crank arm sheets in the first crank arm to position the two crank arm sheets at intervals. The spacer bush prevents the overtightening of the bolt, and can influence the position precision of the two crank arm sheets.
The ninth technical scheme of the welding device for the main shaft crank arm of the circuit breaker is as follows: on the basis of any one of the third to sixth technical schemes of the welding device for the main shaft crank arm of the circuit breaker, the crank arm positioning piece used for being in positioning fit with the first crank arm of the main shaft is defined as a first crank arm positioning piece, the crank arm positioning piece used for being in positioning fit with the second crank arm of the main shaft is defined as a second crank arm positioning piece, the crank arm positioning piece used for being in positioning fit with the third crank arm of the main shaft is defined as a third crank arm positioning piece, the number of the first crank arm positioning pieces is three, the angle positioning part of the first crank arm positioning piece is in a straight plate shape, the first crank arm positioning piece rotating hole is positioned at one end of the straight plate shape angle positioning part, the first crank arm angle positioning hole is positioned at the other end of the straight plate shape angle positioning part, and the crank arm axial positioning part of the first crank arm positioning piece is positioned at the middle position of the straight plate shape angle positioning part; the angle positioning parts of the second crank arm positioning piece and the third crank arm positioning piece are angle-shaped, the second crank arm positioning piece rotating hole and the third crank arm positioning piece rotating hole are positioned at one end of the angle positioning part, the second crank arm angle positioning hole and the third crank arm angle positioning hole are positioned at the other end of the angle positioning part, and the crank arm axial positioning part of the second crank arm positioning piece and the crank arm axial positioning part of the third crank arm positioning piece are positioned at the corner positions of the angle positioning part. Through setting up multiunit turning arm setting element to make this welding set can weld different turning arms on the circuit breaker main shaft, with the requirement of adapting to operating device in the circuit breaker.
The tenth technical scheme of the welding device for the main shaft crank arm of the circuit breaker is as follows: on the basis of any one of the first to sixth technical schemes of the welding device for the main shaft crank arm of the circuit breaker, the welding device further comprises a crank arm piece locating piece sleeved on the main shaft and used for being placed between two crank arm pieces to locate the two crank arm pieces at intervals. The crank arm sheet positioning piece ensures the distance precision between the two crank arm sheets of the first crank arm on the main shaft when the first crank arm is composed of the two crank arm sheets.
The eleventh technical scheme of the welding device for the main shaft crank arm of the circuit breaker is as follows: on the basis of the tenth technical scheme of the welding device for the main shaft crank arm of the circuit breaker, the crank arm piece positioning piece is a clamp type and comprises a first clamp and a second clamp, one ends of the first clamp and the second clamp are hinged, and the other ends of the first clamp and the second clamp are fixed through a fastening structure. The crank arm piece locating piece is a clamp type, is convenient to fix and detach, and improves working efficiency.
The twelfth technical scheme of the welding device for the main shaft crank arm of the circuit breaker is as follows: on the basis of any one of the third to sixth technical schemes of the welding device for the main shaft crank arm of the circuit breaker, the crank arm axial positioning part and the angle positioning part are of an integrated structure. The axial positioning part and the angle positioning part of the crank arm positioning piece are of an integrated structure, and compared with a split type structure, the positioning precision is further improved.
The thirteenth technical scheme of the welding device of the main shaft crank arm of the circuit breaker is as follows: on the basis of any one of the third to sixth technical schemes of the welding device for the main shaft crank arm of the circuit breaker, one end of the crank arm axial positioning part, which is far away from the angle positioning part, is provided with an opening for welding the crank arm and the main shaft together. The opening facilitates spot welding the spindle and the crank arm together.
The fourteenth technical scheme of the welding device for the main shaft crank arm of the circuit breaker is as follows: on the basis of the thirteenth technical scheme of the welding device for the main shaft crank arm of the circuit breaker, the number of the openings is at least two.
The beneficial effects of the utility model are as follows: through installing the support post of perpendicular to supporting seat on the supporting seat to rotate the assembly turning arm setting element on the support post, make the angle location part on the turning arm setting element carry out angle location to each turning arm, guaranteed can rotate main shaft and turning arm when the welding so that the staff need not be used for the rebound just can weld the circumference contact surface of main shaft and turning arm, improved work efficiency.
Drawings
Fig. 1 is a schematic diagram of the result of a prior art circuit breaker spindle;
fig. 2 is a schematic structural view of a main shaft crank arm welding device of the circuit breaker;
FIG. 3 is a schematic view of the welding apparatus of FIG. 2 without a support base;
fig. 4 is a schematic structural view of a first lever positioning member of the main shaft lever welding device of the circuit breaker;
FIG. 5 is a schematic view of the first lever arm positioner of FIG. 4 from another perspective;
fig. 6 is a schematic structural view of a second lever positioning member of the main shaft lever welding device of the circuit breaker of the present utility model;
FIG. 7 is a schematic view of the second lever arm positioner of FIG. 6 from another perspective;
fig. 8 is a schematic structural view of a third lever positioning member of the main shaft lever welding device of the circuit breaker of the present utility model;
FIG. 9 is a schematic view of the third lever arm positioner of FIG. 8 from another perspective;
fig. 10 is a schematic structural view of a fourth lever positioning member of the main shaft lever welding device of the circuit breaker of the present utility model;
FIG. 11 is a schematic view of the fourth lever arm positioner of FIG. 10 from another perspective;
fig. 12 is a schematic structural view of a support base of the welding device for the main shaft lever of the circuit breaker.
Detailed Description
Embodiments of the present utility model will be further described with reference to the accompanying drawings.
In a specific embodiment of the welding device for the crank arms of the main shaft of the circuit breaker, as shown in fig. 2, the welding device for the crank arms of the main shaft of the circuit breaker comprises a supporting seat 14 and a supporting upright 1 vertically arranged on the supporting seat 14, the supporting seat 14 and the supporting upright form the vertical welding device, the supporting upright 14 is rotatably provided with a crank arm positioning piece used for being matched with the main shaft positioning and positioning corresponding crank arms on the main shaft 10, the crank arm positioning piece comprises an axial positioning part used for being matched with the space between the corresponding crank arms on the main shaft 10 and an angle positioning part used for being matched with the corresponding crank arms in a positioning way so as to keep relative angles between the crank arms, and in the embodiment, the crank arm axial positioning part and the angle positioning part are of an integrated structure, and in other embodiments, the crank arm axial positioning part and the angle positioning part can be separately arranged.
In this embodiment, taking the first crank arm positioning piece 2 as an example, the first crank arm positioning piece 2 is assembled on the support upright 1 in a guiding and sliding manner, the support upright 1 and the first crank arm positioning piece 2 are in running fit, so that the main shaft 10 and the first crank arm 11 can be rotated during welding, the circumferential contact surface of the main shaft 10 and the first crank arm 11 can be welded without being used for moving back by a worker, the working efficiency is improved, and in other embodiments, the distance between each crank arm positioning piece can be adjusted in advance according to the structures of the main shaft 10 to be welded and each crank arm, so that each crank arm positioning piece can not slide on the support upright 1 and can only rotate on the support upright 1; the first angular positioning portion 24 of the first lever positioning member 2 is provided with a positioning member rotation hole 21 that is in rotation fit with the support column 1, and the first lever positioning member 2 is rotatably assembled on the support column 1 through the positioning member rotation hole 21, and in other embodiments, the positioning member rotation hole 21 may be provided on the first lever axial positioning portion 22 instead of the first lever angular positioning portion 24.
In this embodiment, the first lever positioning member 2 includes a tile-shaped positioning plate that supports the drawer and extends axially for positioning and matching with the spindle, an angle positioning seat extending radially is provided on the outer peripheral surface of the tile-shaped positioning plate, the inner wall surface of the tile-shaped positioning plate forms a spindle positioning structure for positioning and matching with the spindle, the tile-shaped positioning plate forms a first lever axial positioning portion 22, the angle positioning seat forms a first lever angle positioning portion 24, the positioning member rotating hole 21 is provided on the angle positioning seat, and an angle positioning hole for positioning and matching with a mounting hole of a corresponding lever to position the lever angle is further provided on the angle positioning seat, and the lever positioning member is positioned and matched with the spindle through the tile-shaped positioning plate; the first crank arm positioning pieces 2 are arranged in pairs, so that the stability of fixing the spindle 10 can be ensured, the notch of the tile-shaped positioning plate of the same pair of first crank arm positioning pieces 2 is relatively arranged to enclose a channel for the spindle 10 to pass through, and the angle positioning holes 23 on the angle positioning seats of the same pair of first crank arm positioning pieces 2 are aligned to enable the same pair of first crank arm positioning pieces 2 to correspond to one first crank arm, wherein the two angle positioning seats of the same pair of first crank arm positioning pieces 2 are mutually attached, and in other embodiments, the two angle positioning seats of the same pair of first crank arm positioning pieces 2 can be arranged at intervals.
In this embodiment, the angular positioning seat of the first lever positioning piece 2 further includes a positioning bolt 7 for positioning and matching the angular positioning hole 23 and the mounting hole of the first lever 11, and a nut 9 matched with the positioning bolt 7, and the positioning of the positioning bolt 7 ensures a required positioning angle between the main shaft 10 and the first lever 11, and in other embodiments, the angular positioning hole 23 and the mounting hole of the first lever 11 may also be positioned by a positioning pin; the spacer bush 8 used for being placed between the two crank arm pieces in the first crank arm 11 to position the two crank arm pieces is sleeved on the positioning bolt 7, the spacer bush 8 prevents the tightening of the positioning bolt 7 caused by human eye errors of staff, the position accuracy of the two crank arm pieces can be influenced, and in other embodiments, the spacer bush 8 is not required to be arranged.
In this embodiment, the lever positioning piece for positioning and matching with the first lever 11 of the spindle 10 is a first lever positioning piece 2, the lever positioning piece for positioning and matching with the second lever 12 of the spindle 10 is a second lever positioning piece 3, the lever positioning piece for positioning and matching with the third lever 13 of the spindle 10 is a third lever positioning piece 5, and the number of the first lever positioning pieces 2 is three; the angle positioning part 24 of the first crank arm positioning piece 2 is in a straight plate shape, the first crank arm positioning piece rotating hole 21 is positioned at one end of the straight plate type angle positioning part 24, the first crank arm angle positioning hole 23 is positioned at the other end of the straight plate type angle positioning part 24, and the first crank arm axial positioning part 22 is positioned at the middle position of the straight plate type angle positioning part 24; the angle positioning part 34 of the second crank arm positioning piece 3 is in an angle shape, the second crank arm positioning piece rotating hole 31 is positioned at one end of the angle positioning part 34, the second crank arm angle positioning hole 33 is positioned at the other end of the angle positioning part 34, and the second crank arm axial positioning part 32 is positioned at the corner position of the angle positioning part 34 and is perpendicular to the angle positioning part 34; the angle positioning portion 54 of the third lever positioning member 5 is of an angle shape, the third lever positioning member rotating hole 51 is located at one end of the angle positioning portion 54 of the angle shape, the third lever angle positioning hole 53 is located at the other end of the angle positioning portion 54 of the angle shape, the third lever axial positioning portion 52 is located at a corner position of the angle positioning portion 54 of the angle shape and perpendicular to the angle positioning portion 54 of the angle shape, and in other embodiments, the number and shape of the lever positioning members can be adjusted according to the number and shape of the levers welded on the main shaft 10.
In this embodiment, the welding device further includes a lever piece positioning member 4 sleeved on the main shaft 10 for being placed between two lever pieces in the first lever 11 to position the two lever pieces, and in other embodiments, if the first lever 11 and the third lever 13 are formed by one lever piece, the lever piece positioning member 4 is not needed; the crank arm piece locating piece 4 is a clamp type, and comprises a first clamp 41 and a second clamp 42, one ends of the first clamp 41 and the second clamp 42 are hinged, the other ends of the first clamp 41 and the second clamp 42 are fixed in a matched mode through a fastening bolt 6 and a nut, the fastening bolt 6 and the nut form a fastening device, and in other embodiments, the crank arm piece locating piece 4 can be fixed through fastening devices such as a buckle.
In this embodiment, one end of each crank arm axial positioning part far away from the angle positioning part is provided with an opening 15 for welding the crank arms and the main shaft together, the opening 15 performs spot welding on the main shaft 10 and each crank arm after the main shaft 10 and each crank arm are fixed by the tool, then the main shaft 10 and each crank arm fixed together after spot welding with the main shaft 10 are detached from the welding device for integral welding, and the welding efficiency is improved, wherein the number of the openings 15 is two, and the stability of welding the main shaft and the crank arms on the welding device is increased.
During welding, the first crank arm positioning piece 2, the second crank arm positioning piece 3 and the third crank arm positioning piece 5 are firstly installed on the supporting upright 1 according to corresponding crank arm structures, then the first crank arm 11, the second crank arm 12 and the third crank arm 13 are placed between the two matched crank arm positioning pieces, the crank arm piece positioning piece 4 is placed between the two first crank arm 11, finally the main shaft 10 is penetrated, the crank arm positioning pieces and the corresponding crank arms are fixed together through the positioning bolts 7, the spacer bush 8 and the nuts 9, and the crank arm piece positioning pieces 4 are fastened on the main shaft 10 through the fastening bolts 6 to realize positioning of the first crank arms; after the fixing is finished, the crank arm and the main shaft 10 can be welded together at the opening 15 of the crank arm locating piece through spot welding, the welding of the position of the crank arm is convenient and quick, and the welding efficiency and quality are greatly improved.
In other embodiments, the axial positioning portion may be disposed on the support post to form a post axial positioning portion, where the post axial positioning portion may be a separate cylindrical positioning member, a cylindrical positioning member integrally disposed with the lever positioning member, or a semicircular positioning member.
In other embodiments, the crank arm positioning piece is fixed on the supporting seat, the crank arm positioning piece is not arranged in half, and the axial positioning part of the crank arm is of a semicircular structure; in other embodiments, a corresponding number of lever positioners may be provided according to the number of levers on the spindle; in other embodiments, the angular positioning portion of the lever positioning member may also be in a circular arc shape adapted to the shape of the lever; in other embodiments, the fourth lever positioning member may be formed in a thin cylindrical shape, welded directly between the two levers of the first lever, or the two levers of the first lever may be welded in advance as a unit.
Claims (11)
1. A welding device for a main shaft crank arm of a circuit breaker is characterized in that: the device comprises a supporting seat and a supporting column vertically arranged on the supporting seat, wherein the supporting seat is provided with a main shaft supporting surface which is used for being in sliding supporting fit with the end face of one end of a main shaft, at least two crank arm positioning pieces which are used for being in positioning fit with the main shaft and positioning corresponding crank arms on the main shaft are rotatably arranged on the supporting column, and each crank arm positioning piece comprises an angle positioning part which is used for being in positioning fit with the corresponding crank arms so as to enable the crank arms to keep relative angles; the crank arm positioning piece comprises a crank arm axial positioning part which is used for being matched with the interval between corresponding crank arms on the main shaft;
the angle positioning part is provided with a positioning piece rotating hole in rotating fit with the support upright post, and the crank arm positioning piece is rotationally assembled on the support upright post through the positioning piece rotating hole;
the crank arm positioning piece is assembled on the supporting upright post in a guiding and sliding way;
the method comprises the steps that a first crank arm locating piece used for locating and matching with a first crank arm of a main shaft is defined to be a first crank arm locating piece, a second crank arm locating piece used for locating and matching with a second crank arm of the main shaft is defined to be a third crank arm locating piece used for locating and matching with a third crank arm of the main shaft, the number of the first crank arm locating pieces is three, the angle locating part of the first crank arm locating piece is in a straight plate shape, a first crank arm locating piece rotating hole is located at one end of the angle locating part in the straight plate shape, a first crank arm angle locating hole is located at the other end of the angle locating part in the straight plate shape, and a crank arm axial locating part of the first crank arm locating piece is located at the middle position of the angle locating part in the straight plate shape; the angle positioning parts of the second crank arm positioning piece and the third crank arm positioning piece are angle-shaped, the second crank arm positioning piece rotating hole and the third crank arm positioning piece rotating hole are positioned at one end of the angle positioning part, the second crank arm angle positioning hole and the third crank arm angle positioning hole are positioned at the other end of the angle positioning part, and the crank arm axial positioning part of the second crank arm positioning piece and the crank arm axial positioning part of the third crank arm positioning piece are positioned at the corner positions of the angle positioning part.
2. The welding device for a main shaft lever of a circuit breaker according to claim 1, wherein: the crank arm locating piece comprises a tile-shaped locating plate which axially extends along the supporting upright and is used for locating and matching with the main shaft, an angle locating seat which radially extends is arranged on the outer peripheral surface of the tile-shaped locating plate, the tile-shaped locating plate forms a crank arm axial locating part, the angle locating seat forms an angle locating part, a locating piece rotating hole is formed in the angle locating seat, an angle locating hole which is used for locating and matching with a corresponding mounting hole of the crank arm to locate the crank arm angle is further formed in the angle locating seat, and the crank arm locating piece is in locating and matching with the main shaft through the tile-shaped locating plate.
3. The welding device for the main shaft lever of the circuit breaker according to claim 2, wherein: the crank arm locating pieces are arranged in pairs, the notch of the tile groove on the tile-shaped locating plate of the same pair of crank arm locating pieces is oppositely arranged to enclose a channel for the spindle to pass through, and the angle locating holes on the angle locating seats of the same pair of crank arm locating pieces are aligned so that the same pair of crank arm locating pieces corresponds to one crank arm.
4. A welding device for a main shaft lever of a circuit breaker according to claim 3, characterized in that: the two angle positioning seats of the same pair of crank arm positioning pieces are mutually attached.
5. The welding device for the main shaft lever of the circuit breaker according to any one of claims 2 to 4, characterized in that: the angle positioning seat also comprises a positioning bolt and a nut matched with the positioning bolt, wherein the positioning bolt is used for enabling the angle positioning hole to be matched with the mounting hole of the crank arm in a positioning way.
6. The welding device for a main shaft lever of a circuit breaker according to claim 5, wherein: and a spacer bush used for being placed between the two crank arm sheets in the first crank arm to position the two crank arm sheets at intervals is sleeved on the positioning bolt.
7. The welding device for the main shaft lever of the circuit breaker according to any one of claims 1 to 4, characterized in that: the welding device further comprises a crank arm piece locating piece which is sleeved on the main shaft and used for being placed between the two crank arm pieces to locate the two crank arm pieces at intervals.
8. The welding device for a main shaft lever of a circuit breaker according to claim 7, wherein: the crank arm piece locating piece is a clamp type and comprises a first clamp and a second clamp, one ends of the first clamp and the second clamp are hinged, and the other ends of the first clamp and the second clamp are fixed through a fastening structure.
9. The welding device for the main shaft lever of the circuit breaker according to any one of claims 1 to 4, characterized in that: the crank arm axial positioning part and the angle positioning part are of an integrated structure.
10. The welding device for the main shaft lever of the circuit breaker according to any one of claims 1 to 4, characterized in that: and one end of the crank arm axial positioning part, which is far away from the angle positioning part, is provided with an opening for welding the crank arm and the main shaft together.
11. The welding device for a circuit breaker spindle of claim 10, wherein: the number of the openings is at least two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711116137.3A CN107790911B (en) | 2017-11-13 | 2017-11-13 | Welding device for main shaft crank arm of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711116137.3A CN107790911B (en) | 2017-11-13 | 2017-11-13 | Welding device for main shaft crank arm of circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107790911A CN107790911A (en) | 2018-03-13 |
| CN107790911B true CN107790911B (en) | 2023-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711116137.3A Active CN107790911B (en) | 2017-11-13 | 2017-11-13 | Welding device for main shaft crank arm of circuit breaker |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113327822A (en) * | 2021-06-28 | 2021-08-31 | 中国人民解放军海军工程大学 | Indoor circuit breaker and transmission part fixing device |
| CN113478146B (en) * | 2021-06-29 | 2022-07-12 | 上海西门子开关有限公司 | Main shaft welding jig and crank arm locating component thereof |
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