Power unit module structure

Abstract

The utility model discloses a power unit module structure. The power unit module structure comprises a radiator, a front cover plate, a hinting busbar, a bottom cover plate, a left support frame, a right support frame, a bolt mounting assembly, a master control mounting plate assembly, a sensor mounting plate assembly and an IGBT (Insulated Gate Bipolar Translator), compared with the prior art, through the design of the bolt installation assembly, the anti-falling plate and the sliding plate assembly, the installation, the disassembly, the horizontal push-in and the horizontal pull-out of the power module in the converter can be rapidly completed; meanwhile, due to the design, operation can be completed within the front visible range as much as possible during installation operation, the installation and disassembly processes are faster, the operation efficiency is improved, and the maintenance time is shortened.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of rail transit, especially a power unit module structure. BACKGROUND

[0002] At present, in the field of rail transit, the equipment installed and used on the vehicle converter gradually requires lightweight and small design; this makes the product need to be completely considered from the initial design; the power unit module is an important component module in the converter in the rail transit (for example, in the traction converter, the power unit module can provide the three-phase power supply with adjustable frequency and amplitude by converting the DC power supply, control the torque and speed of the traction motor through the change of the output frequency and voltage, and can also perform signal processing and control, etc.), the power unit module is made into a highly integrated structure layout, which can make the appearance and volume of the converter smaller, and then make the weight of the complete converter device after final assembly decrease, and the function division inside the box body is more clear and explicit.

[0003] In the prior art, the conventional converter power unit module air duct generally adopts a floor-mounted installation form (horizontal), when the power unit module is removed, it is necessary to manually or with the help of a tool to first lift the power unit module to a certain height, and then horizontally move it out of the cabinet; this structure form can meet the heat dissipation of the power unit module, but when the module volume and weight are large, it is necessary to use a tool for installation and removal; and the installation is inconvenient. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a power unit module structure, which adopts a front operation locking structure form, can quickly complete the installation and removal of the power module in the converter, and horizontally pushes in and pulls out.

[0005] The technical solution for achieving the utility model is as follows: a power unit module structure, the power unit module comprises a radiator, a front cover plate, a schematic busbar, a bottom cover plate, left and right support frames, a bolt mounting assembly, a main control mounting plate assembly, a sensor mounting plate assembly and an IGBT; the power unit module is installed on a schematic cabinet body through the bolt mounting assembly, the IGBT is fixedly installed on the radiator, the schematic busbar is installed on the IGBT, and is used for realizing the input and output of the circuit and the conversion of DC and AC; the left and right support frames are fixedly installed on the radiator, and are used for providing support for the frame structure of the power unit module; the main control mounting plate assembly is fixedly installed at the end of the support frame, the sensor mounting plate assembly is fixedly connected with the main control mounting plate assembly, and is used for sampling data of the whole power unit module; the front cover plate is fixedly connected with the radiator, and the bottom cover plate is arranged at the bottom of the fixed front cover plate.

[0006] Compared with the prior art, the utility model has the following obvious advantages:

[0007] (1) The utility model discloses a bolt mounting assembly is arranged, reduces the coaxiality tolerance requirement of schematic cabinet and power unit module installation, and then simplifies the installation process, improves the operation efficiency.

[0008] (2) The utility model discloses set up the anti -drop board, because when installing, the depth is deep, prevents the process of avoiding fastening or disassembling bolt when operating, and bolt falls into the blind area.

[0009] (3) The utility model discloses the sliding plate assembly and the groove board assembly in schematic cabinet cooperation, and the installation is oriented and pushed in and gradually corrects the installation position of power unit module and schematic cabinet corresponding, and then improves the installation efficiency.

[0010] (4) The utility model discloses the design of power module makes when installing operation, can as far as possible frontal visual range operation, more fast installation and disassembly process, improves the operation efficiency, reduces the maintenance time. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 For power unit module structure schematic Figure 1 ;

[0012] Figure 2 For power unit module structure schematic Figure 2 ;

[0013] Figure 3 For power unit module structure schematic Figure 3 ;

[0014] Figure 4 For power unit module structure schematic Figure 4 ;

[0015] Figure 5 For bolt mounting assembly structure schematic enlarged view;

[0016] Figure 5 For power unit module structure schematic Figure 6 ;

[0017] Figure 6 For threaded washer and loose bolt connection schematic drawing;

[0018] Figure 7 For threaded washer and loose bolt connection schematic drawing A-A section view;

[0019] Figure 8 For threaded washer structure schematic drawing;

[0020] Figure 9 For loose bolt structure schematic drawing;

[0021] Figure 10 Schematic diagram of the left and right support frame structures;

[0022] Figure 11 Schematic diagram of the handle structure;

[0023] Figure 12 A three-dimensional diagram of the anti-drop plate;

[0024] Figure 13 Installation diagram of power unit module Figure 14 ;

[0025] Figure 1 Installation diagram of power unit module Figure 15 ;

[0026] Figure 2 Schematic diagram of the right chute plate structure;

[0027] Figure 16 It is a schematic diagram of the structure of the transfer busbar assembly;

[0028] Figure 17 It is a schematic diagram of the installation of the left and right sliding plates 1-7 and the left chute plate 2-1. DETAILED DESCRIPTION

[0029] The following is combined with Figure 18 Figures 1-17 The present invention is further described in detail with reference to the following specific embodiments. The embodiments described are only a portion of the embodiments of the present invention, not all of them. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] A power unit module structure is an important component of a vehicle converter in rail transit; the power unit module 1 specifically includes:

[0031] The back of the front cover 1-1 is fixedly connected to the radiator 1-6 through a bolt mounting assembly to cover the internal components; the front cover 1-1 is made of aluminum alloy material through cutting, bending, riveting, welding and other processes; the front cover 1-1 is provided with heat dissipation holes, which mainly play the role of heat dissipation and decoration; the front cover 1-1 is provided with mounting threaded holes for installation with other components.

[0032] Pull handle 1-2 (2 pieces) are provided with two pieces, which are fixedly installed on the side upper part of the left and right support frames 1-9 and symmetrical to each other. The pull handle 1-2 is mainly formed by bending and welding of stainless steel round steel. The pull handle 1-2 includes a pull rod 1-2-1 and a mounting plate 1-2-2. The mounting plate 1-2-2 is fixedly installed on the left and right support frames 1-9 by screws, and the pull rod 1-2-1 is fixedly connected with the mounting plate 1-2-2. The pull handle 1-2 mainly serves as a hand holding area. When the power unit module needs to be pushed or pulled, the hand holds the part of the pull rod 1-2-1, and then the operation is performed.

[0033] The schematic busbar 1-3 is an externally customized purchased part, which is installed on the IGBT (Insulated Gate Bipolar Transistor) 1-15 by screws. The schematic busbar 1-3 mainly conducts with the IGBT 1-15 and the supporting capacitor, and realizes the input and output of the circuit, including the transmission of DC (Direct Current) to AC (Alternating Current).

[0034] The anti-falling plate 1-4 is fixedly installed on the horizontal extension surface of the inclined surface on the upper part of the front cover plate 1-1. The anti-falling plate 1-4 is a plate made of PC material, which is cut by a carving machine to form rectangular holes and circular holes, and is formed by hot bending. The anti-falling plate 1-4 mainly avoids the falling of bolts into the power unit module 1 or the schematic cabinet 2 during the process of tightening or disassembling the bolts.

[0035] The bottom cover plate 1-5 is arranged at the bottom of the fixed front cover plate 1-1, and is fixedly installed with the side surfaces of the left and right support frames 1-9 and the L-shaped support frame 1-12. The bottom cover plate 1-5 is made of aluminum alloy material by cutting, bending, and riveting processes. The bottom cover plate 1-5 plays a role of shielding the internal structure of the power unit module and providing threaded holes for mounting other parts.

[0036] The heat sink 1-6 is made of 6 series aluminum alloy material of extruded profile, which is generally an externally purchased part. The heat sink 1-6 mainly provides heat transfer and heat dissipation for installing power devices such as IGBT. The heat sink 1-6 is installed on the schematic cabinet 2 by the threaded spacer 1-10 and the non-loose bolt 1-11.

[0037] The sliding plate assembly is used in cooperation with the groove plate assembly in the schematic cabinet 2. The sliding plate assembly includes left and right sliding plates 1-7 and a middle sliding plate 1-8.

[0038] Specifically, the left and right sliding plates 1-7 are fixedly connected with the left and right support frames 1-9 and the bottom cover plate 1-5, which are made of stainless steel material by cutting, bending, and drilling processes. The left and right sliding plates 1-7 are bending pieces including a bottom surface and a side surface, which play a role of wrapping the edges of the bottom of the module. The left and right sliding plates 1-7 form mutual restriction and friction sliding with the left and right sliding groove plates 2-1 and 2-3 inside the schematic cabinet 2.

[0039] The middle sliding plate 1-8 is fixedly installed at the middle position of the bottom of the bottom cover plate 1-5 and is made of stainless steel through cutting, drilling and other processes; it fits the bottom of the power unit module 1 and contacts and slides with the middle pad 2-2 in the schematic cabinet 2.

[0040] The left and right support frames 1-9 are fixedly mounted on the radiator 1-6 and are made of stainless steel through cutting, riveting, bending, welding and other processes; they are used to provide support for the power unit module to form a frame structure.

[0041] The bolt installation assembly includes threaded spacers 1-10 and captive bolts 1-11. The bolt installation assembly is used to quickly install the power unit module 1 and the schematic cabinet 2.

[0042] Specifically, the threaded spacer 1-10 is fixedly installed on the radiator 1-6, and is made of stainless steel material by cutting and drilling. It mainly provides threaded holes and movable cylindrical holes for the captive bolts. The threaded spacer 1-10 is provided with a cylindrical hole 1-10-1 and a threaded hole 1-10-2 for cooperating with the captive bolts 1-11.

[0043] The captive bolt 1-11 connects the radiator and the schematic cabinet 2; the captive bolt 1-11 is a purchased part, and the fully threaded bolt can also be turned and formed by a lathe through secondary processing; a cylindrical section 1-11-1 is provided on the captive bolt 1-11, and the captive bolt 1-11 is installed in conjunction with the threaded spacer 1-10 for installation and connection between the power unit module 1 and the schematic cabinet 2. The captive bolts 1-11 (4 pieces) are screwed into the threaded holes 1-10-2 of the threaded spacer 1-10, and then the entire captive bolt 1-11 passes through the cylindrical hole 1-10-1. There is a gap between the cylindrical section 1-11-1 of the captive bolt 1-11 and the threaded hole 1-10-2 of the threaded spacer 1-10, which enables the captive bolt 1-11 to move slightly up and down and left and right in the threaded spacer 1-10, thereby reducing the coaxiality tolerance requirements of the schematic cabinet 2 and the power unit module 1 during installation, thereby simplifying the installation process and improving operating efficiency.

[0044] The L-shaped support frame 1-12 is fixedly mounted on the radiator 1-6 and is made of stainless steel through cutting, bending, riveting and other processes; it mainly provides threaded holes and contact support surfaces for the bottom cover plate 1-5.

[0045] Main control mounting plate assembly 1-13, including:

[0046] The main control mounting plate 1-13-1 is mounted on the end of the support frame 1-9 and is made of aluminum alloy material and formed by cutting, bending, and riveting;

[0047] The wire tie rod 1-13-2 is made of stainless steel round steel and then welded into shape. The wire tie rod is then installed on the main control mounting plate 1-13-1 by screws.

[0048] The main control board 1-13-3 and the power conversion board 1-13-4 are both fastened to the main control mounting board 1-13-1 by screws; the main control board 1-13-3 provides control, data collection, and signal transmission functions for the entire power unit module; the power conversion board 1-13-4 is used to provide the low-voltage DC power required by the main control board 1-13-3.

[0049] The sensor mounting plate assembly 1-14 includes: a sensor mounting plate 1-14-1, which is laterally mounted on the bent edge of the main control mounting plate 1-13-1 of the main control mounting plate assembly 1-13, and the end of the sensor mounting plate 1-14-1 is fixedly connected to the front cover plate 1-1 by screws; the sensor mounting plate 1-14-1 is made of a plate of aluminum alloy material, and is formed by processes such as cutting, bending, and welding; and the voltage sensor and the like are also fastened to the sensor mounting plate 1-14-1 by screws; and then the current and voltage data of the entire power unit module are sampled, and the collected data are collected on the main control board 1-13-3.

[0050] IGBT 1-15 is fixedly mounted on the heat sink 1-6 and is used to convert DC power into AC power. IGBT 1-15 is a purchased part.

[0051] Cabinet 2 is shown as the cabinet of the converter;

[0052] The left slide plate 2-1 is fixed to the bottom area of ​​the schematic cabinet 2 and is made of stainless steel through cutting, bending, welding and other processes. Its main function is to provide a contact friction surface for the bottom and left side of the power unit module.

[0053] The middle pad 2-2 is fixed to the bottom area of ​​the schematic cabinet 2 and is made of stainless steel through cutting and drilling. Its main function is to provide a contact friction surface for the bottom of the module.

[0054] The right slide plate 2-3 is fixed to the bottom area of ​​the schematic cabinet 2 and is made of stainless steel through cutting, bending, welding and other processes; its main function is to provide a contact friction surface for the bottom and right side of the module;

[0055] Among them, the outer edges of the left slide plate 2-1 and the right slide plate 2-3 are designed as an angled structure, which is conducive to forming a large opening state when the power unit module 1 is extended, and gradually shrinking, so that the module gradually moves backward within the set gap during the pushing process (the gap is set to the gap between the left slide plate 2-1 and the right slide plate 2-3 being greater than the width of the module by 2mm) and finally pushes it to the bottom.

[0056] The adapter busbar assembly 2-4 is fixed on the upper opening area of the schematic cabinet body 2 by bolts, and comprises a busbar 2-4-1 made of copper plate, a mounting plate 2-4-2 made of aluminum alloy plate and an insulator 2-4-3 purchased from outside, which are connected and fastened by bolts; the adapter busbar assembly 2-4 is used for electrical connection with the power unit module;

[0057] The assembling steps of the internal components of the power unit module structure are as follows:

[0058] (1) The left and right support frames 1-9 (left and right symmetrical parts), threaded washers 1-10 (4 pieces), L-shaped support frames 1-12 and IGBTs 1-15 are installed on the heat sink 1-6 by bolts;

[0059] (2) Then, the loose bolts 1-11 (4 pieces) are screwed into the threaded holes 1-10-2 of the threaded washers 1-10, and then the entire loose bolt 1-11 passes through the cylindrical hole 1-10-1, and the cylindrical section 1-11-1 of the loose bolt 1-11 allows the loose bolt 1-11 to move up and down within the threaded washer 1-10 and to shake left and right, thereby reducing the coaxiality tolerance requirement of the installation of the schematic cabinet body 2 and the power unit module 1, and simplifying the installation process and improving the operation efficiency.

[0060] (3) Then, the schematic busbar 1-3 is installed on the IGBT 1-15 by bolts, and the main control mounting plate assembly 1-13 is installed on the left and right support frames 1-9 by bolts;

[0061] (4) Then, the sensor mounting plate assembly 1-14 is installed on the main control mounting plate assembly 1-13 by bolts;

[0062] (5) Then, the bottom cover plate 1-5 (countersunk hole area) is fixed to the side surfaces of the left and right support frames 1-9 and the L-shaped support frame 1-12 by countersunk screws, and the left and right sliding plates 1-7 and the middle sliding plate 1-8 are fastened by countersunk screws outside;

[0063] (6) Then, the front cover plate 1-1 is fastened to the narrow edge surface of the bottom cover plate 1-5 and the narrow edge surface of the sensor mounting plate assembly 1-14 by bolts;

[0064] (7) Then, the anti-falling plate 1-4 sleeved into the schematic busbar 1-3 is fastened by bolts;

[0065] (8) Finally, the handle 1-2 is installed on the upper side of the left and right support frames 1-9 by bolts, and the assembly of the power unit module 1 is completed;

[0066] (9)Similarly, the adapter bus bar assembly 2-4 is first fixed on the upper opening area of the schematic cabinet body 2 by bolts; then the left sliding groove plate 2-1, the middle spacer plate 2-2, and the right sliding groove plate 2-3 are fixed on the bottom area of the schematic cabinet body 2 by means of countersunk screws.

[0067] The power unit module structure of the present disclosure is used as follows when mounted with the external schematic cabinet body 2:

[0068] First, the power unit module 1 is lifted to the door frame opening of the schematic cabinet body 2 by means of a lifting platform trolley (or by lifting the power unit module 1 by three people), and then it is gradually extended into the internal area of the schematic cabinet body 2, so that the left and right sliding plates 1-7 and the middle sliding plate 1-8 of the power unit module 1 are in contact with the left sliding groove plate 2-1, the middle spacer plate 2-2, and the right sliding groove plate 2-3 at the bottom of the schematic cabinet body 2 for sliding; in this process, the outer edges of the left sliding groove plate 2-1 and the right sliding groove plate 2-3 are of an inclined angle structure, which is beneficial to the formation of a large opening state when the power unit module 1 is extended in, and gradually retracted, so that the module moves backward in the set gap during the pushing process (the gap is set to be larger than the width of the module by 2 mm, that is, the gap size between the left sliding groove plate 2-1 and the right sliding groove plate 2-3 is greater than the width of the module) and finally pushed to the bottom.

[0069] Secondly, the loose bolt 1-11 around the power unit module 1 is located in the threaded pad 1-10, which can have a certain degree of freedom within a certain range of shaking, thereby enabling the loose bolt 1-11 to not need to maintain absolute coaxiality with the threaded hole at the corresponding position of the schematic cabinet body 2. The operator drives the loose bolt 1-11 by means of a sleeve and rotates it clockwise, and when the front end (threaded end) of the bolt approaches the threaded hole of the schematic cabinet body 2, the small-amplitude free swing of the bolt can fall into the threaded hole of the schematic cabinet body 2 at a certain moment, and then the thread starts to engage and gradually tightens, completing the fastening between the module and the cabinet. This operation method is simple and fast. At the same time, the loose bolt 1-11 provided on the module can prevent the bolt from falling off to other areas during the disassembly of the module, thereby causing unnecessary trouble. The structure of the loose bolt 1-11 can be disconnected from the threaded hole between the schematic cabinet body 2 when the sleeve is loosened counterclockwise, at which time the loosening of the bolt can be felt obviously, and further rotating the sleeve cannot make the loose bolt 1-11 separate from the threaded pad 1-10, thereby ensuring the rationality, reliability, and safety of the entire operation process. In order to make the loose bolt 1-11 fall off from the module, the module must be taken out as a whole, and then the loose bolt 1-11 is pinched by hand, and rotated counterclockwise while being pulled in the disassembly direction (at this time, the loose bolt 1-11 is in a certain range of free swing state, and it must be ensured that the threaded segment of the loose bolt 1-11 contacts the internal thread of the threaded pad 1-10), so that the loose bolt 1-11 can be unscrewed from the threaded pad 1-10.

[0070] Finally, through the sleeve, the lead-out end of the busbar 1-3 protruding between the intervals (each piece has a through-hole) is fastened with the busbar 2-4-1 (each piece has a threaded hole) of the adapter busbar assembly 2-4 by using hexagonal head bolts; and the anti-falling plate 1-4 (which itself has insulation and voltage resistance) set on the upper end of the power unit module 1 can avoid the bolts from falling into the module during the process of fastening or dismounting the bolts, and then in order to find the fallen bolts, the module must be pulled out as a whole, which causes great trouble and safety hazard.

[0071] The above designs are all for realizing the front operation, reducing the blind area operation in the converter cabinet, and maximizing the convenience, reliability and reasonable design idea.

[0072] In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization by the ordinary skilled in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the protection scope of the present application.

Claims

1. A power unit module structure, characterized in that: The power unit module (1) comprises a radiator (1-6), a front cover plate (1-1), a schematic busbar (1-3), a bottom cover plate (1-5), left and right support frames (1-9), a bolt mounting assembly, a main control mounting plate assembly (1-13), a sensor mounting plate assembly (1-13) and an IGBT (1-15); the power unit module (1) is mounted on the schematic cabinet (2) via the bolt mounting assembly, the IGBT (1-15) is fixedly mounted on the radiator (1-6), and the schematic busbar (1-3) is mounted on the IGBT (1-15), for realizing circuit input and output as well as direct current. The left and right support frames (1-9) are fixedly mounted on the radiator (1-6) and are used to provide support for the power unit module to form a frame structure; the main control mounting plate assembly (1-13) is fixedly mounted on the end of the support frame (1-9) and is used to realize the control and data transmission of the power unit module; the sensor mounting plate assembly (1-13) is fixedly connected to the main control mounting plate assembly (1-13) and is used to perform data sampling on the entire power unit module; the front cover plate (1-1) is fixedly connected to the radiator (1-6), and the bottom cover plate (1-5) is arranged at the bottom of the fixed front cover plate (1-1).

2. The power unit module structure according to claim 1, characterized in that: A sliding plate assembly is provided at the bottom of the bottom cover plate (1-5) for cooperating with the slide plate in the schematic cabinet (2) to form mutual restriction and friction sliding when the power unit module is installed in the schematic cabinet (2).

3. The power unit module structure according to claim 2, characterized in that: The sliding plate assembly comprises left and right sliding plates (1-7) and a middle sliding plate (1-8); the left and right sliding plates (1-7) are fixedly connected to left and right support frames (1-9) and a bottom cover plate (1-5); and the middle sliding plate (1-8) is fixedly installed at the bottom middle position of the bottom cover plate (1-5).

4. The power unit module structure according to claim 2, characterized in that: The bolt installation assembly comprises a threaded pad (1-10) and a captive bolt (1-11); the threaded pad (1-10) is fixedly installed on the radiator (1-6) and is used to provide a threaded hole and a movable cylindrical hole for the captive bolt; a cylindrical hole (1-10-1) and a threaded hole (1-10-2) are provided in the threaded pad (1-10) and are used to cooperate with the captive bolt (1-11); a cylindrical section (1-11-1) is provided on the captive bolt (1-11), and the captive bolt (1-11) and the threaded pad (1-10) are installed in cooperation; thereby achieving a fastened connection between the schematic cabinet (2) and the power unit module (1).

5. The power unit module structure according to claim 1, characterized in that: The power unit module (1) also includes an L-shaped support frame (1-12) for providing mounting threaded holes and a contact support surface for the bottom cover plate (1-5).

6. The power unit module structure according to claim 1, characterized in that: The power unit module (1) also includes a handle (1-2), and the handle (1-2) includes a pull rod (1-2-1) and a mounting plate (1-2-2); the mounting plate (1-2-2) is fixedly mounted on the left and right support frames (1-9) by screws, and the pull rod (1-2-1) is fixedly connected to the mounting plate (1-2-2).

7. The power unit module structure according to claim 1, characterized in that: The power unit module (1) further comprises an anti-drop plate (1-4), which is fixedly mounted on the horizontal extension surface of the inclined surface at the upper portion of the front cover plate (1-1) and is used to prevent the bolts from falling into the power unit module (1) or the schematic cabinet (2) during the process of tightening or removing the bolts.

8. The power unit module structure according to claim 1, characterized in that: The main control mounting plate assembly (1-13) comprises: a main control mounting plate (1-13-1) mounted on the end of a support frame (1-9); a wire tie rod (1-13-2) mounted on the main control mounting plate (1-13-1); and a main control plate (1-13-3) and a power conversion plate (1-13-4) fastened to the main control mounting plate (1-13-1) by screws.

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