CN111403298B - Crimping and correcting method for three-column cascade interconnection structure - Google Patents
Crimping and correcting method for three-column cascade interconnection structure Download PDFInfo
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- CN111403298B CN111403298B CN202010255032.1A CN202010255032A CN111403298B CN 111403298 B CN111403298 B CN 111403298B CN 202010255032 A CN202010255032 A CN 202010255032A CN 111403298 B CN111403298 B CN 111403298B
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Abstract
The invention discloses a crimping and correcting method of a three-column cascade interconnection structure, which comprises the following steps: overlapping the frames; laser positioning auxiliary tools are respectively installed at the reserved holes corresponding to the three columns on the upper bearing plate; a compensating plate is arranged on the inner side of a block surrounded by three pin shaft positioning holes of the lower bearing plate; after sheets with the same thickness and size are arranged on the symmetrical surfaces of the corresponding cylinder compensation sheets, stacking the three-cylinder devices, and removing the sheets after the devices are stacked and pre-fixed; arranging a pressure-bearing locking device at the top of the three-column device; manually pre-locking the pressure-bearing locking device, and checking and correcting the position degrees of the compression-type diode and the IGCT by using a feeler lever tool and an IGCT position gauge respectively; the pressing oil cylinders of the three sets of pressure-bearing locking devices are connected with the same hydraulic pump, and the three columns are simultaneously crimped at the same pressure. The invention provides a brand new technical idea for the compression joint correction of the multi-column cascade interconnection structure and has good application prospect.
Description
Technical Field
The invention belongs to the technical field of semiconductor switches, relates to a crimping and correcting method of a three-column cascade interconnection structure, and particularly relates to a crimping and correcting method of a three-column cascade interconnection structure crimping device in a mechanical high-voltage direct-current circuit breaker commutation branch trigger switch module.
Background
In a mechanical high-voltage direct-current circuit breaker, a trigger switch of a current conversion branch circuit utilizes the on-off characteristics of a power electronic device to manufacture a zero crossing point and assist the switching-off of a main switch, and the mechanical high-voltage direct-current circuit breaker has wide application in the high-voltage direct-current power transmission and distribution industry.
At present, for reasons of high voltage and large current, a mechanical high-voltage dc circuit breaker generally uses a crimping device, such as an IGCT (integrated Gate commutated thyristor), an IGET (Injection Enhanced Gate commutated thyristor), a crimping IGBT (Insulated Gate Bipolar Transistor), a crimping diode, and the like. The trigger switch based on the crimping device is a core component of a mechanical high-voltage direct-current circuit breaker.
In the field of trigger switch design, miniaturization of the overall structure and improvement of the power density thereof are the current development directions. And the design that adopts multicolumn cascade interconnection realizes a feasible direction that trigger switch is miniaturized, however the crimping technique that adopts at present is single-column crimping, and on the one hand, its device piles up the position degree and is difficult to control, and is high to staff's operating technique requirement, and is inefficient, and on the other hand, it is difficult to be applicable to multicolumn cascade interconnection structure, and the reason is as follows: 1) when multiple columns are interconnected, the multiple columns need to be pressed and connected by force at the same time, and the same pressure equipment cannot be directly used due to different compression deformation of the device, namely the phenomenon of uneven pressure distribution when three columns are pressed and connected at the same time cannot be solved; 2) in the multi-column interconnection structure, each layer of devices are mutually related and influenced, the devices are difficult to position, and the inspection and correction are difficult after the stacking is finished; 3) the multi-column interconnection structure needs to measure and collect the compression deformation of each column device and compensate according to requirements, and no proper compensation method exists at present. Even if force and use single-column crimping technique to carry out many posts crimping, still need the connector bar to carry out the secondary after the single-column crimping to connect, the space volume that occupies is too big and the structure is loaded down with trivial details complicated.
Therefore, the development of the crimping and correcting method of the multi-column cascade interconnection structure is of practical significance.
Disclosure of Invention
The invention aims to overcome the defect that the application of a multi-column cascade interconnection structure is limited by the existing crimping technology, and provides a crimping and correcting method of a three-column cascade interconnection structure.
In order to achieve the purpose, the invention provides the following technical scheme:
a compression joint and correction method of a three-column cascade interconnection structure comprises the following steps:
(1) the frame comprises an upper bearing plate, a lower bearing plate and a pull rod positioned between the upper bearing plate and the lower bearing plate, after the frame is lapped, a left support inspection bracket and a right support inspection bracket are arranged at two sides of the frame, the distance and the levelness between the upper bearing plate and the lower bearing plate are adjusted through the left support inspection bracket and the right support inspection bracket, and four sides of the upper bearing plate and the lower bearing plate are positioned;
(2) the laser positioning auxiliary tools are respectively arranged at the reserved holes corresponding to the three columns on the upper bearing plate, and the light beams are adjusted to enable each column of light to irradiate the centers of the lower bearing plate and the pin shaft positioning holes corresponding to the lower bearing plate, so that when devices are stacked in the later process, the positioning light beams can be used as reference bases to be beneficial to the operation of staff, meanwhile, the surface of the device and the positioning pin shaft are prevented from rubbing and scratching the mounting surface of the device in the blind alignment process of the device, all compression joint type devices in the three-column cascade interconnection structure are positioned by adopting a central hole pin shaft, and corresponding connecting pieces and insulating structural parts are also positioned by adopting central holes and positioned by the positioning pin shaft, certainly, the protection scope of the present invention is not limited thereto, and a person skilled in the art can reasonably design the three-column cascade interconnection structure according to actual requirements, that is, the hole position aligned by the laser positioning auxiliary tool is not limited to the pin shaft positioning hole;
(3) a compensating plate is arranged on a block surrounded by three pin shaft positioning holes of the lower bearing plate close to the inner side, and the compensating plate is positioned between the upper bearing plate and the lower bearing plate;
(4) after the back surfaces of the cylinders corresponding to the compensating plates I, II and III are provided with the thin slices with the same thickness and size, the three-column device is stacked, due to the fact that the three-column device is stacked in multiple layers, in order to ensure that the device is stable and does not incline in the stacking process, the thin slices with the same thickness are added to the symmetrical surface of the compensating plate of each column to serve as a supporting function, the thin slices are removed after the device is stacked and pre-fixed, and preliminary positioning is carried out through a positioning pin shaft in the stacking process;
(5) arranging a pressure-bearing locking device on the top of the three-column device, wherein the pressure-bearing locking device comprises a compression oil cylinder, a guide cylinder, a disc spring, a locking nut, a spherical screw and a concave pressing block, the compression oil cylinder, the spherical screw and the concave pressing block are sequentially arranged from top to bottom, the concave pressing block is contacted with the top of the three-column device, the guide cylinder is sleeved outside the spherical screw, the upper part of the guide cylinder is connected with the compression oil cylinder, the lower part of the guide cylinder is connected with the locking nut, and the disc spring is sleeved outside the guide cylinder;
(6) manually pre-locking a pressure-bearing locking device, fixing a left support inspection bracket and a right support inspection bracket on an upper pressure bearing plate through inspection bracket positioning pins, checking and correcting the position degree of a cylinder where a compression-type diode is located by using a feeler lever tool, fixing an IGCT position detection tool on a lower pressure bearing plate, and correcting the position degree of the cylinder where the IGCT is located by means of an IGCT shell mounting and fixing hole site;
(7) in order to ensure the same pressure of the three columns, the pressing oil cylinders of three sets of pressure-bearing locking devices at the tops of the three-column devices are connected with the same hydraulic pump, pressure confirmation is carried out through oil pressure, and the three columns are simultaneously crimped at the same pressure (the pressure is the same, and the compression deformation is different).
The crimping and correcting method of the three-column cascade interconnection structure, disclosed by the invention, has the advantages that three columns are simultaneously pressed at the same pressure, the problem of uneven pressure distribution in the three-column cascade interconnection structure manufactured by single-column crimping in the prior art is solved, the problem of stress deformation caused by multi-column crimping is solved, the deformation compensation is carried out in the specific area of the inner side of the three columns, the position degree of a device can be effectively regulated and controlled through the arranged left support inspection bracket, the right support inspection bracket and the IGCT position checking fixture, in addition, the stacking and positioning of the multi-column device can be assisted by adding the laser positioning auxiliary tool and the positioning pin shaft, the stacking efficiency and the quality of the device are obviously improved, and the method has a wide application prospect.
As a preferable technical scheme:
according to the crimping and correcting method of the three-column cascade interconnection structure, due to the fact that the three-column cascade interconnection structure is a crimping type device, all contact surfaces of the three-column device are wiped clean by using absolute ethyl alcohol before stacking is carried out, and therefore electrical connection performance is guaranteed.
According to the crimping and correcting method of the three-column cascade interconnection structure, the three-column device can be subjected to eccentric self-correction through the matching of the spherical screw and the concave pressing block of the pressure-bearing locking device;
each column of devices is formed by stacking a plurality of layers of devices, and the devices of each layer of the three columns are connected through copper bars;
because the compression amount of the cylinder where the crimping type diode is located is different from that of the cylinder where the IGCT is located and other connecting devices, after the three-column device is stacked in a multi-layer mode and crimped, the compression deformation amount of each cylinder is different, all connecting rows among the cylinders of the three-column device are connected in a flexible connection mode for avoiding mutual influence among the cylinders, and the connecting rows and the devices are located through locating pin shafts.
According to the crimping and correcting method of the three-column cascade interconnection structure, in the crimping process of the three-column cascade interconnection structure, due to the internal structure (such as a ceramic shell, a chip, a supporting frame, a copper mounting surface and the like) of a crimping type device, deformation of two surfaces of the device after being pressed is not plane integral deformation in a complete sense, and the distribution of the pressure is not uniform. After pressure bearing transmission, the stress of the middle of the device mounting surface is larger than that of the edge of the device mounting surface, and the inventor finds that the center is colored, the edge is not colored and a certain regularity is presented when pressure test paper (Fuji pressure sensitive test paper) is used for carrying out detection on uniform pressure distribution. This phenomenon varies depending on the elastic modulus of the connecting material adjacent to the device, that is, the amount of deformation of the device surface during pressure transmission varies depending on the elastic deformation of the material on the force transmission path, and the softer the material, the lower the elastic modulus, the greater the influence on the deformation of the device surface. The IGCT device adopts an insulating block for isolation among devices in each layer in a column body where the IGCT is positioned due to electrical design. The insulating block is made of softer material, and the deformation can be effectively compensated through the transition of the insulating column; among each part in the cylinder that crimping type diode belongs to, 4 crimping type diodes of every are carried out the transitional coupling by 1 aluminium pig, because the aluminium pig material is harder, can't play effective replenishment to crimping type diode's installation face deformation, according to crimping type diode place cylinder installation face deflection, the aluminium pig surface has carried out indent processing, the indent size corresponds with the deflection of crimping type diode place cylinder, thereby carry out the deformation compensation, finally reach the even requirement of pressure distribution, indent 0.03 ~ 0.05mm generally.
In the above crimping and correcting method for the three-pillar cascade interconnection structure, the inspecting and correcting the position degree of the pillar where the crimp type diode is located specifically includes: the position degree deviation of the diode device is detected by detecting the position of the aluminum block of the column body where the crimping type diode is located, the size of the central positioning hole of the crimping type diode device is fixed, the positioning hole diameters of other devices are the same as the central positioning hole, and in order to meet technological requirements, the diameter of the positioning pin shaft is designed to be a specific size, so that the maximum total positioning deviation of 4 crimping type diodes is smaller than the maximum deviation size allowed by crimping type diode crimping.
The crimping and correcting method of the three-column cascade interconnection structure comprises the following specific steps: the compression oil cylinder pushes the spherical screw and the locking nut to compress the concave pressing block downwards, meanwhile, the guide cylinder moves upwards in the reverse direction to compress the disc spring to store pressure energy, and when the three-column pressure reaches a set value, the locking nut is screwed down to lock the deformation of the disc spring, so that compression joint is completed.
The three compensating plates are respectively corresponding to three pin shaft positioning holes, the shape of the three compensating plates is the same as that of a common part formed by intersecting two circles, the pin shaft positioning hole I and the pin shaft positioning hole II are installation hole positions of a column body where the crimping type diode is located, the pin shaft positioning hole III is an installation hole position of a column body where the IGCT is located, the pin shaft positioning hole I and the pin shaft positioning hole II are respectively provided with the compensating plate I and the compensating plate II corresponding to the column body, the pin shaft positioning hole III is provided with the compensating plate III corresponding to the column body, the compensating plate I, the compensating plate II and the compensating plate III are all arranged on the inner sides of the three column bodies, wherein the compensating plate I is arranged symmetrically to a central connecting line of the pin shaft positioning hole I and the pin shaft positioning hole III, the compensating plate II is arranged symmetrically to a central connecting line of the pin shaft positioning hole II and the pin shaft positioning hole III, and the compensating plate III is arranged symmetrically to the central connecting line of the pin shaft positioning hole I, the pin shaft positioning hole II, the compensating plate III, The centers of the pin roll positioning holes III and the pin roll positioning holes II are sequentially connected to form central line arrangement of an included angle, pressure required by a crimping type device is large, three columns of a three-column cascade interconnection structure simultaneously bear pressure, the three-column position distribution is eccentric stress relative to an upper bearing plate and a lower bearing plate, when the three columns bear pressure simultaneously, the upper bearing plate and the lower bearing plate are stressed and deformed, the periphery of a triangular area formed by the three columns is large in stress, the inner side stress is small, the pressure required by a crimping type diode column body of the three-column structure and an IGCT column body of the three-column structure is uniform in stress due to the internal structure, and the situation that an internal chip is damaged due to nonuniform stress is avoided, so that deformation compensation needs to be carried out on a specific area on the inner side of the three columns. The protection scope of the present invention is not limited to this, and only one possible technical solution is given here, and in practical applications, a person skilled in the art can design the compensation plate according to actual requirements, and of course, the shape of the compensation plate is related to the structural layout of the three-column body to ensure that the deformation can be sufficiently compensated.
According to the crimping and correcting method of the three-column cascade interconnection structure, the shape and the size of the compensating plate I, the compensating plate II and the compensating plate III are the same, specifically, according to the thickness and the material of the bearing plate and the deformation caused by the pressure and the distribution, the thickness of the compensating plate is 0.2-0.4 mm, the thickness of the compensating plate is too thick, the stress of a device in an inner area of the three columns is too large, so that the pressure distribution is not uniform, the thickness of the compensating plate is too thin, the stress of a device in an outer area of the three columns is too large, the pressure distribution is also not uniform, and the two conditions possibly cause the failure caused by the non-uniform stress of a chip in the device, so that the reliability of a product is influenced. The area of the compensating plate is 1/6 ~ 1/5 corresponding to the cylinder sectional area, and the compensating area is too little, can not play the compensation effect, and the compensating area is too big, can compensate inefficacy, makes the regional atress that warp little increase, leads to the uneven aggravation of pressure distribution.
Has the advantages that:
(1) according to the crimping and correcting method of the three-column cascade interconnection structure, deformation of the upper and lower bearing plates of the frame is measured after the three columns are simultaneously pressed, and meanwhile, an area with uneven pressure distribution is compensated;
(2) according to the crimping and correcting method of the three-column cascade interconnection structure, the laser auxiliary positioning tool is arranged on the upper pressure bearing plate when the devices are stacked, the stacking of multiple layers of devices is guided in an auxiliary mode, and the problems of low stacking efficiency and high skill requirement of staff are solved;
(3) according to the crimping and correcting method of the three-column cascade interconnection structure, in order to enable three-column devices to be stressed simultaneously and avoid interference of the devices of each column due to different compression deformation of the devices, each column is designed to be crimped by adopting an independent oil cylinder, and a pump station is shared to control pressure;
(4) the crimping and correcting method of the three-column cascade interconnection structure provided by the invention has the advantages that the requirement is provided for the processing precision of the upper and lower bearing plates, the corresponding process holes are added, and the correcting tool is installed by means of the upper and lower bearing plates, so that the position degree of each stacked device is corrected;
(5) the crimping and correcting method of the three-column cascade interconnection structure controls pressure transmission caused by position distribution of each column of crimping type devices, compensates deformation of the devices, provides a brand new technical thought for crimping and correcting the multi-column cascade interconnection structure, and has a great application prospect.
Drawings
FIG. 1 is a three-dimensional view of the main structure of a three-pillar cascade interconnect structure of the present invention;
FIG. 2 is a schematic diagram of a frame lap joint of a main structure of a three-pillar cascade interconnect structure according to the present invention;
FIG. 3 is a schematic diagram of device stacking laser assisted positioning of a three-pillar cascade interconnect structure according to the present invention;
FIG. 4 is a schematic diagram illustrating device position calibration of a three-pillar cascade interconnect structure according to the present invention;
fig. 5a, 5b and 5c are schematic diagrams illustrating crimping deformation, compensation regions and a top view of the three-pillar cascade interconnection structure of the present invention, respectively;
fig. 6a and 6b are schematic diagrams of three-post crimping and crimping locking of the three-post cascade interconnection structure of the invention, respectively;
FIG. 7 is a schematic view of compression deformation and deformation compensation of a compression diode in a compression diode column;
the device comprises a bearing plate 1, an upper bearing plate 2, a pull rod 3, a lower bearing plate 4, a flexible connection copper bar 5, a lower connection copper bar 6, an aluminum block 7, an upper connection copper bar 8, a compensation plate 9, a crimping diode 10, a bearing locking device 11, an insulating column 12, an IGCT device 13, a left support inspection support 14, a right support inspection support 15, a laser positioning auxiliary tool 16, a long probe rod 17, a short probe rod 18, an IGCT position inspection tool 19, a compression oil cylinder 20, a guide cylinder 21, a disc spring 22, a locking nut 23, a spherical screw rod 24, a concave pressing block 25, a positioning pin shaft 26 and an inspection support positioning pin.
Detailed Description
The following further describes the embodiments of the present invention with reference to the attached drawings.
A compression joint and correction method of a three-column cascade interconnection structure comprises the following steps:
(1) as shown in fig. 2, the frame is lapped, the frame comprises an upper bearing plate 1, a lower bearing plate 3 and a pull rod 2 positioned between the upper bearing plate and the lower bearing plate, after the frame is lapped, a left support inspection bracket 13 and a right support inspection bracket 14 are arranged at two sides of the frame, the distance and the levelness of the upper bearing plate and the lower bearing plate are adjusted through the left support inspection bracket 13 and the right support inspection bracket 14, and four sides of the upper bearing plate and the lower bearing plate are positioned;
(2) laser positioning auxiliary tools 15 are respectively installed at the reserved holes corresponding to the three columns on the upper bearing plate 1, and light beams are adjusted so that each column of light irradiates the center of the lower bearing plate 2 and the pin shaft positioning hole corresponding to the lower bearing plate, wherein the installation schematic diagram is shown in fig. 3;
(3) three compensating plates 8 (a compensating plate I, a compensating plate II and a compensating plate III) are respectively arranged on the side, close to the upper pressure bearing plate, of a block defined by three pin shaft positioning holes of the lower pressure bearing plate, the shape and the size of the compensating plate I, the compensating plate II and the compensating plate III are the same, the shape of the compensating plate I is the same as that of a common part defined by two intersecting circles, the thickness of the compensating plate I is 0.2-0.4 mm, the area of the compensating plate I is 1/6-1/5 corresponding to the cross section of a cylinder, the pin shaft positioning hole I and the pin shaft positioning hole II are mounting pin shaft hole positions of a cylinder where a compression type diode 9 is located, the pin shaft positioning hole III is a mounting pin shaft hole position of a cylinder where an IGCT 12 is located, the pin shaft positioning hole I and the pin shaft positioning hole II are respectively provided with the compensating plate I and the compensating plate II corresponding to the cylinder, the compensating plate III is arranged on the inner sides of the three cylinders, the compensation plate I is arranged symmetrically to a central connecting line of the pin shaft positioning hole I and the pin shaft positioning hole III, the compensation plate II is arranged symmetrically to a central connecting line of the pin shaft positioning hole II and the pin shaft positioning hole III, the compensation plate III is arranged symmetrically to a central line of an included angle formed after the centers of the pin shaft positioning hole I, the pin shaft positioning hole III and the pin shaft positioning hole II are sequentially connected, and the compression joint deformation and compensation area of the three-column cascade interconnection structure is shown in FIGS. 5a, 5b and 5 c;
(4) after the compensation sheet I, the compensation sheet II and the compensation sheet III are arranged on the back face of the lower bearing plate relative to the compensation sheet III, the three-column device is stacked, the sheets are removed after the device is stacked and pre-fixed, all contact faces of the three-column device are wiped clean by using absolute ethyl alcohol before being stacked, all connecting rows among columns of the three-column device are connected in a soft connection mode, wherein each layer of device in the column where the IGCT 12 is located is in transition through an insulating column, each part in the column where the compression type diode 11 is located is in transition connection through 1 aluminum block 6 every 4 compression type diodes, the surface of the aluminum block 6 is subjected to indent processing (indent is 0.03-0.05 mm), and the compression type diode in the column where the compression type diode is located is subjected to compression deformation and deformation compensation as shown in figure 7;
(5) arranging a pressure-bearing locking device 10 shown in fig. 6b at the top of a three-column device, wherein the pressure-bearing locking device 10 comprises a pressing oil cylinder 19, a guide cylinder 20, a disc spring 21, a locking nut 22, a spherical screw 23 and a concave pressing block 24, the pressing oil cylinder 19, the spherical screw 23 and the concave pressing block 24 are sequentially arranged from top to bottom, the concave pressing block 24 is contacted with the top of the three-column device, the guide cylinder sleeve 20 is arranged outside the spherical screw 23, the upper part of the guide cylinder sleeve 20 is connected with the pressing oil cylinder 19, the lower part of the guide cylinder sleeve is connected with the locking nut 22, the disc spring 21 is sleeved outside the guide cylinder 20, and the eccentric self-correction can be carried out on the three-column device through the matching of the spherical screw 23 and the concave pressing block 24 of the pressure-bearing locking device 10;
(6) manually pre-locking the pressure-bearing locking device 10, fixing a left support inspection bracket 13 and a right support inspection bracket 14 on the upper pressure-bearing plate 1 through an inspection bracket positioning pin 26, checking and correcting the position degree of a cylinder where a compression type diode 9 is located by using a probe rod tool (comprising a long probe rod 16 and a short probe rod 17, wherein the length of the probe rod is determined according to the structural design size of a product and the size of the inspection bracket), fixing an IGCT position detection tool 18 on the lower pressure-bearing plate 3, and correcting the position degree of the cylinder where the IGCT 12 is located by means of an IGCT shell mounting and fixing hole position, wherein the device position degree is corrected as shown in FIG. 4;
the specific steps for checking and correcting the position degree of the column where the crimp type diode 9 is located are as follows: detecting the position degree deviation of the diode device by detecting the position of the aluminum block 6 of the column where the diode 9 is positioned;
(7) connecting the pressing oil cylinders 19 of the three sets of pressure-bearing locking devices 10 at the tops of the three-column devices with the same hydraulic pump, and simultaneously carrying out pressure welding on the three columns at the same pressure, wherein the pressure welding and the pressure welding locking of the three columns are shown in FIGS. 6a and 6 b;
the crimping method comprises the following specific steps: the pressing oil cylinder 19 pushes the spherical screw 23 and the locking nut 22 to press the concave pressing block 24 downwards, meanwhile, the guide cylinder 20 moves upwards in the reverse direction to compress the disc spring 21 for pressure energy storage, and when the three-column pressure reaches a set value, the locking nut 22 is screwed down to lock the deformation of the disc spring 21, so that the compression joint is completed.
According to the compression joint and correction method of the three-column cascade interconnection structure, disclosed by the invention, the deformation of the upper and lower bearing plates of the frame is measured according to the simultaneous compression of the three columns, and meanwhile, the compensation is carried out on the area with uneven pressure distribution; when the devices are stacked, a laser auxiliary positioning tool is arranged on the upper bearing plate to perform auxiliary guiding on the stacked multiple layers of devices, so that the problems of low stacking efficiency and high skill requirement of staff are solved; in order to enable the three-column devices to be stressed simultaneously and avoid interference of the devices of each column due to different compression deformation of the devices, each column is designed to be in compression joint by adopting an independent oil cylinder, and a common pump station is used for controlling pressure; the processing precision of the upper and lower bearing plates is required, corresponding process holes are added, and the correction tool is installed by means of the upper and lower bearing plates to correct the position degree of each stacked device; the pressure transmission caused by the position distribution of each column of the compression joint type device is controlled, the deformation of the device is compensated, a brand new technical idea is provided for compression joint and correction of a multi-column cascade interconnection structure, and the compression joint type device has a wide application prospect.
Although specific embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these embodiments are merely illustrative and various changes or modifications may be made without departing from the principles and spirit of the invention.
Claims (8)
1. A compression joint and correction method of a three-column cascade interconnection structure is characterized by comprising the following steps:
(1) the frame is lapped, the frame comprises an upper bearing plate, a lower bearing plate and a pull rod positioned between the upper bearing plate and the lower bearing plate, after the frame is lapped, a left support inspection bracket and a right support inspection bracket are arranged on two sides of the frame, the distance and the levelness between the upper bearing plate and the lower bearing plate are adjusted through the left support inspection bracket and the right support inspection bracket, and four sides of the upper bearing plate and the lower bearing plate are positioned;
(2) laser positioning auxiliary tools are respectively installed at the reserved holes corresponding to the three columns on the upper bearing plate, and light beams are adjusted to enable each column of light to irradiate the centers of the lower bearing plate and the pin shaft positioning hole corresponding to the lower bearing plate;
(3) a compensating plate is arranged on a block surrounded by three pin shaft positioning holes of the lower bearing plate close to the inner side, and the compensating plate is positioned between the upper bearing plate and the lower bearing plate;
(4) after the thin slices with the same thickness and size are arranged on the back surfaces of the cylinders corresponding to the compensating slices I, II and III, the three-column device is stacked, and the thin slices are removed after the device is stacked and pre-fixed;
(5) arranging a pressure-bearing locking device at the top of the three-column device, wherein the pressure-bearing locking device comprises a compression oil cylinder, a guide cylinder, a disc spring, a locking nut, a spherical screw and a concave pressing block, the compression oil cylinder, the spherical screw and the concave pressing block are sequentially arranged from top to bottom, the concave pressing block is contacted with the top of the three-column device, the guide cylinder is sleeved outside the spherical screw, the upper part of the guide cylinder is connected with the compression oil cylinder, the lower part of the guide cylinder is connected with the locking nut, and the disc spring is sleeved outside the guide cylinder;
(6) manually pre-locking a pressure-bearing locking device, fixing a left support inspection bracket and a right support inspection bracket on an upper pressure bearing plate through inspection bracket positioning pins, checking and correcting the position degree of a cylinder where a compression-type diode is located by using a feeler lever tool, fixing an IGCT position detection tool on a lower pressure bearing plate, and correcting the position degree of the cylinder where the IGCT is located by means of an IGCT shell mounting and fixing hole site;
(7) the pressing oil cylinders of the three sets of pressure-bearing locking devices at the tops of the three-column devices are connected with the same hydraulic pump, and the three columns are simultaneously crimped at the same pressure.
2. The method of claim 1, wherein all contact surfaces of the three-pin device are cleaned by wiping with absolute alcohol before stacking.
3. The crimping and correcting method of the three-column cascade interconnection structure according to claim 1, wherein the eccentricity self-correction can be performed on the three-column device through the cooperation of the spherical screw and the concave pressing block of the pressure-bearing locking device;
all the connecting rows among the columns of the three-column device are connected in a flexible connection mode.
4. The method of claim 1, wherein each device layer in the pillar body of the IGCT is transited through an insulating pillar;
among each part in the cylinder of crimping type diode place, every 4 crimping type diodes carry out transitional coupling by 1 aluminium pig, and the aluminium pig surface has carried out indent processing, and indent 0.03 ~ 0.05 mm.
5. The method for crimping and correcting the three-pillar cascade interconnection structure according to claim 4, wherein the checking and correcting the position degree of the pillar where the crimp type diode is located specifically comprises: the position degree deviation of the diode device is detected by detecting the position of the aluminum block of the column body where the crimping type diode is located.
6. The crimping and correcting method of the three-column cascade interconnection structure according to claim 1, wherein the crimping specifically comprises the steps of: the compression oil cylinder pushes the spherical screw and the locking nut to compress the concave pressing block downwards, meanwhile, the guide cylinder moves upwards in the reverse direction to compress the disc spring to store pressure energy, and when the three-column pressure reaches a set value, the locking nut is screwed down to lock the deformation of the disc spring, so that compression joint is completed.
7. The method of claim 1, wherein the three compensating plates are three compensating plates, each compensating plate corresponds to three pin locating holes, the shape of the compensating plate is the same as the common portion defined by the intersection of two circles, the pin locating holes I and the pin locating holes II are mounting holes for a column with a crimped diode, the pin locating hole III is a mounting hole for an IGCT column, the compensating plates I and the compensating plates II are mounted on the pin locating holes I and the pin locating holes II, respectively, the compensating plates III are mounted on the pin locating holes III, the compensating plates I, the compensating plates II, and the compensating plates III are all disposed on the inner sides of the three columns, wherein the compensating plates I are disposed symmetrically with respect to the center connecting line of the pin locating holes I and the pin locating holes III, and the compensating plates II are disposed symmetrically with respect to the center connecting line of the pin locating holes II and the pin locating holes III, the compensation plate III is arranged symmetrically to the center of the pin shaft positioning hole I, the center of the pin shaft positioning hole III and the center of the pin shaft positioning hole II are sequentially connected to form a central line of an included angle.
8. The crimping and correcting method of the three-column cascade interconnection structure according to claim 7, wherein the shape and the size of the compensator I, the compensator II and the compensator III are the same;
the thickness of the compensation plate is 0.2-0.4 mm, and the area of the compensation plate is 1/6-1/5 corresponding to the cross section of the column body.
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| CN104297287B (en) * | 2014-06-16 | 2017-01-25 | 怡维怡橡胶研究院有限公司 | Compression heat generation detector and method thereof |
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| CN103909373A (en) * | 2014-04-15 | 2014-07-09 | 安徽安凯汽车股份有限公司 | Positioning rectifying tool and method for engine mounting support |
| CN204230714U (en) * | 2014-11-18 | 2015-03-25 | 国家电网公司 | Circuit breaker bulk migration system |
| CN107716617A (en) * | 2017-10-11 | 2018-02-23 | 燕山大学 | A kind of axle pipe part automatic alignment machine |
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