CN115503500B - A lifting support device and lifting method for power unit components of EMU - Google Patents
A lifting support device and lifting method for power unit components of EMU Download PDFInfo
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- CN115503500B CN115503500B CN202211273581.7A CN202211273581A CN115503500B CN 115503500 B CN115503500 B CN 115503500B CN 202211273581 A CN202211273581 A CN 202211273581A CN 115503500 B CN115503500 B CN 115503500B
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 36
- 239000002184 metal Substances 0.000 claims abstract description 27
- 238000009434 installation Methods 0.000 claims abstract description 21
- 239000002131 composite material Substances 0.000 claims description 28
- 238000010521 absorption reaction Methods 0.000 claims description 22
- 239000003990 capacitor Substances 0.000 claims description 21
- 238000005452 bending Methods 0.000 claims description 16
- 230000005484 gravity Effects 0.000 claims description 11
- 238000013461 design Methods 0.000 claims description 10
- 238000009413 insulation Methods 0.000 claims description 10
- 238000003754 machining Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 238000009826 distribution Methods 0.000 claims description 3
- 238000004088 simulation Methods 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 claims 1
- 238000005266 casting Methods 0.000 abstract description 3
- 239000000306 component Substances 0.000 description 43
- 238000012423 maintenance Methods 0.000 description 8
- 238000001816 cooling Methods 0.000 description 6
- 230000017525 heat dissipation Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/007—Physical arrangements or structures of drive train converters specially adapted for the propulsion motors of electric vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L9/00—Electric propulsion with power supply external to the vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2200/00—Type of vehicles
- B60L2200/26—Rail vehicles
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a hoisting supporting device and a hoisting method for power unit components of a motor train unit, and relates to the field of installation of rail transit vehicle converters. The hoisting support device comprises an insulating bidirectional support column, a support and a support fixing plate, wherein the insulating bidirectional support column is cylindrical, a metal column is arranged inside the insulating bidirectional support column, an insulating casting body is arranged outside the insulating bidirectional support column, a metal stud is fixedly connected to the first end of the metal column, a hollow threaded hole is formed in the tail end of the metal column, a nut is fixedly arranged in the metal column, the support is rectangular plate-shaped, a plurality of kidney-shaped holes are formed in the middle of the support, a kidney-shaped hole is formed in each of the left end and the right end of the support, the support fixing plate comprises a horizontal portion and a vertical portion which are fixedly connected, the support is connected to the support fixing plate through bolt holes of the horizontal portion, and the vertical portion is mounted on a power unit frame through two bolts. According to the invention, the hoisting of the power unit components of the motor train unit is completed by a corresponding method. The invention can avoid longitudinal tension of the busbar to the IGBT terminal, ensure the stability of the hoisting structure and better adapt to the hoisting requirement of the converter component of the motor train unit.
Description
Technical Field
The invention relates to the field of rail transit vehicle converter installation, in particular to a motor train unit power unit component hoisting and supporting device and a hoisting method.
Background
The rail transit vehicle converter provides power and motive power for a vehicle system and is an important component on a rail transit vehicle. The power unit is used as a core component of the converter, and is widely applied and rapidly developed for carrying out power conversion on the input voltage in the rail transit vehicle converter. Along with the development and application of high-power semiconductor devices IGBT, the auxiliary power unit of the rail transit vehicle also develops towards unitization and high reliability.
The rail transit motor train unit converter is hoisted at the bottom of a carriage, covers are lifted at the left side and the right side of the running direction of the vehicle for maintenance and repair, the left side and the right side of the converter are convenient for maintenance and repair, but the space is limited, other devices are hoisted at the bottom of the converter, the hoisting is carried out by taking the gravity and the longitudinal vibration in the running process of the vehicle into consideration, and meanwhile, the transverse stress of acceleration and deceleration of the running direction of the vehicle is considered, so that higher requirements are put forward on the assembly safety and the performance reliability of the hoisting assembly device and the internal components thereof.
One installation mode of the air cooling power unit in the rail transit motor car converter in the prior art is vertical installation, namely, the air cooling radiator is used as a structural support of the whole power unit below, and IGBT, composite busbar and other components are assembled on the air cooling radiator in sequence. However, the structure is only suitable for application conditions of vertical assembly of locomotive converters, and for the requirement of hoisting assembly of motor train units, if the air-cooled heat-dissipating power unit is turned up and down by 180 degrees, the power device is easy to cause mechanical damage and electrical failure of the device due to the stress such as gravity and vibration of parts such as a lower composite busbar and the like, and the requirements on the mechanical structure and the electrical performance cannot be met.
In the prior art, a cooling power unit in a rail transit motor car converter is also installed in a push-pull mode on the left side and the right side of the running direction of a car in the converter, and the cooling power unit is positioned on the left side and the right side of the bottom of the motor car converter and is convenient for lifting covers for maintenance and overhaul, and is generally used for assembling parts with high failure rate. The mounting mode has the defects that ① is mainly used for water-cooling heat dissipation power units, the power units are vertically mounted at the side cover lifting maintenance positions of the converter and occupy a large space, ② has low failure rate of auxiliary power units and still occupies maintenance convenience positions along with the maturity of a power unit control protection technology, and ③ push-pull power units require the power unit mounting positions to be arranged on the left side and the right side of the running direction of a vehicle in the converter.
Disclosure of Invention
The invention provides a motor train unit component hoisting supporting device and a hoisting method, which solve the problems that in the prior art, the traditional power unit is arranged on two sides of the running direction of a vehicle in a converter, and the structure is unstable, a welding point is cracked due to mechanical stress, an IGBT device is invalid, and a heat dissipation component cannot be optimally distributed during hoisting assembly.
The invention discloses a hoisting supporting device for a power unit component of a motor train unit, which is realized by the following technical scheme that the hoisting supporting device comprises an insulating bidirectional supporting column, a bracket and a bracket fixing plate, wherein the insulating bidirectional supporting column is provided with a plurality of insulating bidirectional supporting columns, the insulating bidirectional supporting column is cylindrical, the inside of the insulating bidirectional supporting column is a metal column, the outside of the metal column is an insulating casting body, the two characteristics are that in order to ensure mechanical strength and insulating property, the head end of the metal column is fixedly connected with a metal stud, the inside of the tail end of the metal column is provided with a hollow threaded hole, the tail end of the metal column is fixedly provided with a nut, the metal stud and the hollow threaded hole are used for bidirectional connection and supporting, and in order to increase a stress surface, the hollow threaded hole is used for fixing a composite busbar on the insulating bidirectional supporting column through a bolt, and the metal stud is connected with the bottom of a radiator to increase mechanical strength. In order to fix the absorption capacitor and ensure the mechanical strength of the whole hoisting structure, a bracket is arranged at the bottom of the absorption capacitor to provide supporting force, the bracket is in a rectangular plate shape, a plurality of waist-shaped holes for fixing the absorption capacitor terminals are formed in the middle of the bracket and used for fixing the absorption capacitor terminals, the problem of unsuitable assembly size caused by machining errors of components and assembly installation errors can be avoided by adopting the design of the waist-shaped holes, and waist-shaped holes A are formed at the left end and the right end of the bracket and are used for connecting the bracket and the bracket fixing plate, so that the bracket is arranged on a power unit frame through the bracket fixing plate. The support fixed plate comprises a horizontal portion and a vertical portion which are fixedly connected, one to two bolt holes are formed in the horizontal portion, two bolt holes are formed in the vertical portion, the support is connected with the support fixed plate through the bolt holes of the horizontal portion, and the vertical portion of the support fixed plate is mounted on the power unit frame through two bolts.
Preferably, a double-bending connection structure is arranged between the horizontal part and the vertical part of the bracket fixing plate.
The hoisting method of the power unit component of the motor train unit is realized by adopting the component, and the specific hoisting steps applicable to various installation environments are as follows:
① Firstly, selecting mounting points of an insulating bidirectional support column, namely selecting the mounting points according to the gravity center of a hoisting component, wherein the total tension of each mounting point ensures the longitudinal stress balance of a composite busbar assembly;
② The specification and the number of the support columns are selected, namely the total stress of all the support columns is determined according to the weight of the hoisting component, the number of the support columns is selected firstly according to the installation space condition, and secondly, the total stress distribution is performed through the weight bearable by a single bolt with the preset specification:
f×N=FN
f is the bearing force of a single support column bolt;
n is the number of the support columns;
F N is the total bearing force of all the support columns, wherein the total bearing force value F N of the support columns is larger than the total weight of the hoisting component;
③ The miniaturized design of the power unit has the design requirements that the existing space is utilized to the maximum extent to assemble the residual components, and additional components are added at the bottom of the hoisting component according to actual requirements;
④ The number of the holes is determined according to the terminals of the hoisting components, and kidney-shaped holes are selected for the holes so as to avoid the problem of unsuitable assembly size caused by component machining errors and component installation errors;
⑤ The bracket fixing plate is used for fixing the bracket on the power unit frame, and supporting the hoisting component to play a supporting role, so that the longitudinal stress of the vehicle in the running process is avoided;
⑥ In the power module hoisting structure, an insulated bidirectional support column is assembled by utilizing an installation interval space to pull up the composite busbar, so that the composite busbar hoisted below the IGBT is prevented from being subjected to longitudinal mechanical stress by gravity to cause deformation and electrical failure of an IGBT terminal;
⑦ And (3) supporting the hoisting component by using a bracket, selecting a fixed point on the existing frame of the power unit, connecting the fixed point with the bracket by using a bracket fixing plate, and matching the installation size and mechanically reinforcing the fixed point by using the bending height, the bending width and the bending number of the bracket fixing plate.
In the above steps, preferably, the support fixing plate increases strength through a double bending structure, and simultaneously adjusts the height and the left-right spacing.
Compared with the prior art, the hoisting supporting device and the hoisting method for the motor train unit power unit component have the following beneficial effects that the following problems are solved:
1) When the power unit is hoisted and assembled, the busbar is assembled below the IGBT, and the hoisting supporting device is used for avoiding longitudinal pulling force of the busbar on the IGBT terminal, so that cracking of welding points of the IGBT terminal and the DBC caused by mechanical stress is avoided, and further failure of an IGBT device is avoided;
2) According to the support column mounting points selected by the gravity center of the busbar, the longitudinal stress uniformity of the busbar is ensured, and meanwhile, the stability of a hoisting structure is ensured;
3) The method has the advantages that the longitudinal stress of the IGBT is reduced, meanwhile, the existing space is utilized to install an absorption capacitor, and the turn-off overvoltage absorption of the IGBT is completed;
4) The hoisting components such as the composite busbar, the absorption capacitor and the like are assembled into one assembly, so that the assembly is convenient for later disassembly and maintenance, and the maintainability of the power unit is improved;
5) The support column arranged between the radiator and the busbar and the bracket below the absorption capacitor form a mechanical support structure with a pull-up lower support together, so that the stability of the hoisting structure is ensured;
6) The hoisting is not limited by the installation position in the converter, so that the structural optimization design of the converter is facilitated, and the optimal layout design of a fan, an air duct and all heat dissipation components in the converter is facilitated;
7) The position limitation of lifting cover maintenance ports on two sides of the travelling direction of a vehicle in the converter by the traditional power unit is broken through, so that the design of the whole converter is more flexible, and the hoisting requirements of converter components of the motor train unit are better met;
8) The hoisting device and the method can be used for mechanical installation and fixation of other components in the converter, can be flexibly applied to hoisting assembly conditions of the motor train unit, and can also be applied to hoisting component assembly in other fields.
Drawings
Fig. 1 is a schematic structural diagram of an insulated bidirectional support column.
Fig. 2 is a schematic structural view of the bracket.
Fig. 3 is a schematic structural view of the bracket fixing plate.
Fig. 4 is a schematic view of one of the angles of the power unit component lifting support.
Fig. 5 is another angular schematic view of a power cell unit hoist support.
The two-way support column comprises a 1-insulating two-way support column, a 101-metal column body, a 102-insulating casting body, a 103-metal stud, a 104-hollow threaded hole, a 105-nut, a 2-support, a 201-kidney-shaped hole, a 202-kidney-shaped hole A, a 3-support fixing plate, a 4-absorption capacitor, a 5-bending composite busbar and a 6-insulating two-way support column busbar fixing point.
Detailed Description
The invention is further illustrated below with reference to specific examples.
A hoisting and supporting device for power unit components of a motor train unit is shown in fig. 1-3, and comprises an insulation bidirectional support column 1, a support 2 and support fixing plates 3, wherein the insulation bidirectional support column 1 is provided with a plurality of insulation bidirectional support columns, the inside of the insulation bidirectional support column 1 is provided with a metal column body 101, the outside of the metal column body 101 is provided with an insulation cast body 102, the first end of the metal column body 101 is fixedly connected with a metal stud 103, the inside of the tail end of the metal column body 101 is provided with a hollow threaded hole 104, the tail end of the metal column body is fixedly provided with a nut 105, the support 2 is in a rectangular plate shape, the middle of the support 2 is provided with a plurality of kidney-shaped holes 201 for fixing absorption capacitor terminals, the left end and the right end of the support 2 are respectively provided with a kidney-shaped hole A202, the kidney-shaped holes A202 are used for connecting the support 2 and the support fixing plates 3, the support fixing plates 3 comprise a horizontal portion and a vertical portion which are fixedly connected, one to two bolt holes are formed in the vertical portion, the horizontal portion is connected to the bolt hole of the support fixing plates 3, and the vertical portion is connected to the support fixing plates 3 through the bolt holes of the horizontal portion, and the two bolt holes are fixedly arranged on the support fixing plates 3.
In this embodiment, a preferable scheme is adopted, and a double-bending connection structure is arranged between the horizontal part and the vertical part of the bracket fixing plate 3.
The hoisting method for the power unit components of the motor train unit is realized by adopting the hoisting supporting device, and is suitable for most hoisting environments, and the specific hoisting steps are as follows:
① Firstly, selecting mounting points of an insulating bidirectional support column, namely selecting the mounting points according to the gravity center of a hoisting component, wherein the total tension of each mounting point ensures the longitudinal stress balance of a composite busbar assembly;
② The specification and the number of the support columns are selected, namely the total stress of all the support columns is determined according to the weight of the hoisting component, the number of the support columns is selected firstly according to the installation space condition, and secondly, the total stress distribution is performed through the weight bearable by a single bolt with the preset specification:
f×N=FN
f is the bearing force of a single support column bolt;
n is the number of the support columns;
F N is the total bearing force of all the support columns, wherein the total bearing force value F N of the support columns is larger than the total weight of the hoisting component;
③ The miniaturized design of the power unit has the design requirements that the existing space is utilized to the maximum extent to assemble the residual components, and extra components are added at the bottom of the hoisting component according to actual requirements;
④ The number of the holes is determined according to the hoisting component terminals, and kidney-shaped holes are selected for the holes so as to avoid the problem of unsuitable assembly size caused by component machining errors and component installation errors;
⑤ The bracket fixing plate is used for fixing the bracket on the power unit frame, and supporting the hoisting component to play a supporting role, so that the longitudinal stress of the vehicle in the running process is avoided;
⑥ In the power module hoisting structure, an insulated bidirectional support column is assembled by utilizing an installation interval space to pull up the composite busbar, so that the composite busbar hoisted below the IGBT is prevented from being subjected to longitudinal mechanical stress by gravity to cause deformation and electrical failure of an IGBT terminal;
⑦ And (3) supporting the hoisting component by using a bracket 2, selecting a fixed point on the existing frame of the power unit, connecting the bracket 2 by using a bracket fixing plate, matching the installation dimension and mechanically reinforcing the bending height, the width and the bending number of the bracket fixing plate 3, and increasing the strength of the bracket fixing plate 3 by double bending and simultaneously adjusting the height and the left-right spacing.
In this embodiment, the hoisting is performed under the condition that the bent composite busbar structure is asymmetric, as shown in fig. 4 and 5, and the hoisting method comprises the following steps:
① Tightly attaching power devices including IGBT to a radiator;
② The method comprises the steps of fixing 4 insulating bidirectional support columns on a radiator through one end of a bolt of the insulating bidirectional support columns and threaded holes on the surface of the radiator according to moment, and determining the positions of the 4 insulating bidirectional support columns on the radiator after the positions are integrally deviated according to a gravity center simulation result;
③ Before being assembled on a power unit, 3 absorption capacitors are fixed on a composite busbar mounting hole, and the absorption capacitors and the composite busbar jointly form a composite busbar assembly, so that later installation and maintenance are facilitated;
④ The composite busbar assembly is assembled and fixed on the power device;
⑤ The bolts penetrate through the composite busbar mounting holes, penetrate into the insulating bidirectional support column screw holes and are screwed according to the moment, and the composite busbar is fixedly connected with the insulating bidirectional support column;
⑥ Placing the bracket 2 on the absorption capacitor, and enabling three terminals of the absorption capacitor to pass through the kidney-shaped holes without fastening so as to prevent the problem of size matching caused by error in the connection of the subsequent bracket fixing plate 3 and the frame;
⑦ Two sides of the bracket 2 are fixed on the power unit frame through bracket fixing plates 3;
⑧ The middle three kidney-shaped holes of the bracket 2 and the absorption capacitor terminal are screwed and fixed by nuts;
⑨ After all the components of the power unit are assembled, the power unit is turned over by 180 degrees, so that the radiator is arranged on the upper side and is hoisted and installed in the converter.
The scope of the present invention is not limited to the above embodiments, and various modifications and alterations of the present invention will become apparent to those skilled in the art, and any modifications, improvements and equivalents within the spirit and principle of the present invention are intended to be included in the scope of the present invention.
Claims (2)
1. A hoisting method for power unit components of a motor train unit is characterized in that the hoisting method is realized by hoisting components in a supporting device by adopting the power unit components of the motor train unit;
The hoisting and supporting device for the power unit component of the motor train unit comprises an insulation bidirectional supporting column (1), a bracket (2) and a bracket fixing plate (3), wherein the insulation bidirectional supporting column (1) is provided with a plurality of kidney-shaped holes (201) for fixing absorption capacitor terminals, the insulation bidirectional supporting column (1) is cylindrical, a metal column body (101) is arranged inside the insulation bidirectional supporting column, an insulation cast body (102) is arranged outside the metal column body (101), a metal stud (103) is fixedly connected to the head end of the metal column body (101), a hollow threaded hole (104) is formed in the tail end of the metal column body (101), nuts (105) are fixedly arranged at the tail end of the metal column body, the bracket (2) is rectangular, a plurality of kidney-shaped holes (202) for fixing absorption capacitor terminals are formed in the middle of the bracket (2), a kidney-shaped hole A (202) is formed in the left end and the right end of the bracket (2) respectively, the kidney-shaped holes A (202) are used for connecting the bracket (2) and the bracket fixing plate (3), the bracket fixing plate (3) comprises a horizontal portion and a vertical portion which are fixedly connected, one to two bolt holes are formed in the horizontal portion, the horizontal portion and the vertical portion is fixedly connected with the bolt hole (2) and the two bolt holes are formed in the bracket fixing plate (3), the vertical part of the bracket fixing plate (3) is arranged on the power unit frame through two bolts, and a double-bending connecting structure is arranged between the horizontal part and the vertical part of the bracket fixing plate (3);
the specific hoisting steps are as follows:
① Firstly, selecting mounting points of an insulating bidirectional support column, namely selecting the mounting points according to the gravity center of a hoisting component, wherein the total tension of each mounting point ensures the longitudinal stress balance of a composite busbar assembly;
② The specification and the number of the support columns are selected, namely the total stress of all the support columns is determined according to the weight of the hoisting component, the number of the support columns is selected firstly according to the installation space condition, and secondly, the total stress distribution is performed through the weight bearable by a single bolt with the preset specification:
f×N=FN
f is the bearing force of a single support column bolt;
n is the number of the support columns;
F N is the total bearing force of all the support columns, wherein the total bearing force value F N of the support columns is larger than the total weight of the hoisting component;
③ The miniaturized design of the power unit has the design requirements that the existing space is utilized to the maximum extent to assemble the residual components, and additional components are added at the bottom of the hoisting component according to actual requirements;
④ The number of the holes is determined according to the terminals of the hoisting components, and kidney-shaped holes are selected for the holes so as to avoid the problem of unsuitable assembly size caused by component machining errors and component installation errors;
⑤ The bracket fixing plate is used for fixing the bracket on the power unit frame, and supporting the hoisting component to play a supporting role, so that the longitudinal stress of the vehicle in the running process is avoided;
⑥ In the power module hoisting structure, an insulated bidirectional support column is assembled by utilizing an installation interval space to pull up the composite busbar, so that the composite busbar hoisted below the IGBT is prevented from being subjected to longitudinal mechanical stress by gravity to cause deformation and electrical failure of an IGBT terminal;
⑦ The lower support is that a support (2) is used for supporting the hoisting component, a fixed point is selected on the existing frame of the power unit and is connected with the support (2) through a support fixing plate, and the installation size is matched and the mechanical reinforcement is carried out through the bending height, the bending width and the bending number of the support fixing plate;
in addition, under the condition that the bending composite busbar structure is asymmetric, the hoisting method comprises the following steps:
① Tightly attaching power devices including IGBT to a radiator;
② The method comprises the steps of fixing 4 insulating bidirectional support columns on a radiator through one end of a bolt of the insulating bidirectional support columns and threaded holes on the surface of the radiator according to moment, and determining the positions of the 4 insulating bidirectional support columns on the radiator after the positions are integrally deviated according to a gravity center simulation result;
③ Before being assembled on a power unit, 3 absorption capacitors are fixed on a composite busbar mounting hole, and the absorption capacitors and the composite busbar jointly form a composite busbar assembly;
④ The composite busbar assembly is assembled and fixed on the power device;
⑤ The bolts penetrate through the composite busbar mounting holes, penetrate into the insulating bidirectional support column screw holes and are screwed according to the moment, and the composite busbar is fixedly connected with the insulating bidirectional support column;
⑥ The bracket (2) is arranged on the absorption capacitor, and three terminals of the absorption capacitor pass through the kidney-shaped hole and are not fastened temporarily, so that the problem of size matching caused by error in the connection of the subsequent bracket fixing plate (3) and the frame is avoided;
⑦ Two sides of the bracket (2) are fixed on the power unit frame through bracket fixing plates (3);
⑧ The middle three kidney-shaped holes of the bracket (2) and the absorption capacitor terminal are screwed and fixed by nuts;
⑨ After all the components of the power unit are assembled, the power unit is turned over by 180 degrees, so that the radiator is arranged on the upper side and is hoisted and installed in the converter.
2. The hoisting method of the motor train unit power unit component of claim 1, wherein the support fixing plate (3) is increased in strength through a double-bending structure, and meanwhile, the height and the left-right spacing are adjusted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211273581.7A CN115503500B (en) | 2022-10-18 | 2022-10-18 | A lifting support device and lifting method for power unit components of EMU |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211273581.7A CN115503500B (en) | 2022-10-18 | 2022-10-18 | A lifting support device and lifting method for power unit components of EMU |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115503500A CN115503500A (en) | 2022-12-23 |
| CN115503500B true CN115503500B (en) | 2025-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211273581.7A Active CN115503500B (en) | 2022-10-18 | 2022-10-18 | A lifting support device and lifting method for power unit components of EMU |
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| CN (1) | CN115503500B (en) |
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| CN201885929U (en) * | 2010-11-29 | 2011-06-29 | 常州亿晶光电科技有限公司 | Drawable hook type assembly fixing device |
| JP5749192B2 (en) * | 2012-02-13 | 2015-07-15 | 株式会社東芝 | Vehicle drive control device |
| CN203522552U (en) * | 2013-09-27 | 2014-04-02 | 中冶赛迪电气技术有限公司 | A New Type of Integrated DC Power Device |
| CN104734467B (en) * | 2015-04-22 | 2017-03-29 | 永济新时速电机电器有限责任公司 | Lift-on/lift-off type stepped construction power model |
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| CN111200915B (en) * | 2020-01-21 | 2021-06-01 | 西安中车永电电气有限公司 | Hoisting combined type power unit frame |
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| CN213115097U (en) * | 2020-08-10 | 2021-05-04 | 中建八局第二建设有限公司 | Linear connecting assembly for assembled concrete external wall panel |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107769587A (en) * | 2017-11-22 | 2018-03-06 | 中车大连电力牵引研发中心有限公司 | A kind of light rail auxiliary power module and light rail AuCT |
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