Inverter preassembly device

Abstract

The utility model provides a pre-assembling device for an inverter. The inverter preassembling device comprises a rack. The first jig is arranged on the rack, and the first jig is used for positioning the inverter case; the second jig is used for positioning the to-be-assembled device, the second jig is located below the first jig, and the second jig is movably arranged relative to the rack; and the lifting mechanism is arranged on the rack, and the driving end of the lifting mechanism is in driving connection with the second jig, so that the second jig is provided with an assembling position close to the first jig and a feeding position far away from the first jig. According to the technical scheme of the utility model, the problem that the to-be-assembled device of the inverter is difficult to pre-assemble manually in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of inverters, and more particularly to a pre-assembly device for an inverter. Background Art

[0002] An inverter is a power conversion device that can convert direct current into alternating current. Before the inverter is assembled on the general assembly line, it is necessary to perform pre-assembly operations on the inverter chassis offline (or at the side of the line). The content of the pre-assembly operations includes: First, install the reactor and radiator on the outer bottom of the chassis; then, fill the interface gaps between the reactor and radiator with sealant on the inner bottom of the chassis; finally, install the sheet metal cover (used to cover the radiator and reactor to prevent them from being directly exposed) on the outer bottom of the chassis.

[0003] In the prior art, the pre-assembly operations on the inverter chassis are usually completed by two people. That is, one person lifts one end of the chassis, and the other person places a reactor (or a radiator) on the bottom of the chassis and screws it to the inner bottom of the chassis. Then, continue to place another reactor (or a radiator) on the bottom of the chassis and screw it to the inner bottom of the chassis until all the reactors and radiators on the bottom of the chassis are screwed and installed. Then, two people (or one person) jointly stand the chassis up and one person holds the chassis. Finally, the other person brings the sheet metal cover, aligns it with the bottom of the chassis, and screws the sheet metal cover.

[0004] However, in the process of manually pre-assembling the inverter chassis, on the one hand, since the height that a person can lift the chassis is limited, and a person can only lift one side of the chassis, and the weight of a single radiator and a single reactor is relatively heavy, it is difficult for a person to carry it for a long time. In this way, it is difficult to install the radiator and reactor on the bottom of the chassis, and there will be an uncoordinated phenomenon when two people pre-assemble the chassis, resulting in the problem of slow assembly efficiency. On the other hand, because the chassis itself is relatively large in volume and the inner wall of the inverter is relatively thin, during the pre-assembly operation, affected by human factors, local deformation of the chassis is likely to occur. This deformation will affect the sealing performance of the chassis, thus affecting the product quality of the string inverter. On the other hand, it takes two people to cooperate to complete the pre-assembly operation of the chassis, which will result in a relatively high labor cost. Summary of the Utility Model

[0005] The main purpose of the utility model is to provide a pre-assembly device for an inverter to solve the problem that it is difficult to manually pre-assemble the devices to be assembled of the inverter in the prior art.

[0006] To achieve the above object, the present utility model provides an inverter pre-assembly device, and the inverter pre-assembly device includes: a frame; a first fixture disposed on the frame, and the first fixture is used for positioning an inverter chassis; a second fixture for positioning components to be assembled, the second fixture is located below the first fixture, and the second fixture is movably disposed relative to the frame; a lifting mechanism disposed on the frame, and a driving end of the lifting mechanism is drivingly connected to the second fixture, so that the second fixture has an assembly position close to the first fixture and a loading position away from the first fixture.

[0007] Further, the second fixture further has a wiring position located between the assembly position and the loading position, and the driving end is used for driving the second fixture to switch between the assembly position, the wiring position and the loading position.

[0008] Further, the lifting mechanism includes two lifting members, each lifting member has a mounting body and a moving body movably disposed relative to the mounting body, the two mounting bodies are connected, one of the two moving bodies is connected to the frame, and the other of the two moving bodies is connected to the second fixture, wherein the moving body connected to the second fixture forms the driving end.

[0009] Further, the first fixture is pivotally disposed relative to the frame.

[0010] Further, the first fixture has a first end and a second end oppositely arranged, and the inverter pre-assembly device further includes: a pivoting member including a first support seat and a rotating shaft, the first support seat is disposed on the frame, the rotating shaft is connected to the first end, and the rotating shaft is rotatably connected to the first support seat; a main force-applying member connected to the second end, and under the action of an external force, the main force-applying member drives the second end to rotate around the axis of the rotating shaft, so that the second end has a flipping position lifted and away from the frame and an installation position dropped and close to the frame.

[0011] Further, in the direction from the first end to the second end, the first support seat is slidably disposed on the frame.

[0012] Further, the inverter pre-assembly device further includes a guiding member and a sliding member, the sliding member slides on the guiding member, the sliding member is provided on the first support seat, and the guiding member is provided on the frame.

[0013] Further, the inverter pre-assembly device further includes an auxiliary power member, the auxiliary power member is pivotally connected to the first support seat, a driving portion of the auxiliary power member is pivotally connected to the first fixture, the driving portion is used for providing a supporting force to the first fixture, and the first end, the pivot point between the auxiliary power member and the first support seat, the pivot point between the driving portion and the first fixture, and the second end are arranged in sequence.

[0014] Further, a limiting seat is provided on the frame, a limiting groove is provided on the limiting seat, a buffer member is provided on the second end, the first fixture is in the installation position, and the buffer member is inserted and matched with the limiting groove; and / or, a supporting member is provided at the first end of the first fixture, the first fixture is in the flipping position, and the supporting member supports on the frame.

[0015] Further, the first fixture has a positioning cavity, the inverter pre-assembly device includes a connecting member and a limiting member, the connecting member is connected to the first fixture, the limiting member is rotatably arranged relative to the connecting member, and the limiting member has a limiting position located above the positioning cavity to limit the inverter chassis and a releasing position away from the positioning cavity to release the inverter chassis.

[0016] Applying the technical solution of the present invention, when the second fixture is in the feeding position away from the first fixture, the first fixture is used to position the inverter chassis, and the second fixture is used to position the device to be assembled. Compared with the prior art where one technician needs to lift the inverter chassis and another technician installs the device to be assembled inside the inverter chassis, in this embodiment, the driving end of the driving mechanism can be used to drive the second fixture to move towards the first fixture, so that the second fixture is in the assembling position close to the first fixture, so that the device to be assembled fits the corresponding position at the bottom of the inverter chassis, so that the device to be assembled can be installed at the bottom of the inverter chassis, facilitating the pre-assembly operation of the inverter chassis. In this way, on the one hand, manual calibration is not required, and the pre-assembly operation of the device to be assembled can be completed at one time, thus avoiding the phenomenon that it is difficult to install during the manual pre-assembly operation, and further improving the assembly efficiency; on the other hand, it can also avoid the phenomenon that the local deformation of the chassis is caused by improper manual operation, thus avoiding the influence on the sealing performance of the chassis; on the third hand, two technicians are not required for the pre-assembly operation, so that the labor cost can be reduced. Description of the Drawings

[0017] The specification drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0018] Figure 1 Shows a schematic structural diagram of an embodiment of the inverter pre-assembly device of the present invention;

[0019] Figure 2 Shows Figure 1 an exploded view of a part of the structure of the inverter pre-assembly device;

[0020] Figure 3 Shows Figure 1 an exploded view of another part of the mechanism of the inverter pre-assembly device;

[0021] Figure 4 Shows Figure 1 the structural schematic diagram of the second jig of the inverter pre-assembly device;

[0022] Figure 5 the structural schematic diagram of the inverter chassis to be assembled;

[0023] Figure 6 Shows Figure 5 the bottom view of the inverter chassis of;

[0024] Figure 7 the structural schematic diagram of the embodiment of the device to be assembled (reactor and inverter) of the present utility model;

[0025] Figure 8 Shows Figure 7 the bottom view of the device to be assembled (reactor and inverter) of;

[0026] Figure 9 the structural schematic diagram of the embodiment of the sheet metal cover of the present utility model;

[0027] Figure 10 the assembly structural schematic diagram of the sheet metal cover, the device to be assembled and the inverter chassis of the present utility model;

[0028] Figure 11 the schematic diagram of an assembly process of the inverter pre-assembly device, the device to be assembled and the inverter chassis of the present utility model;

[0029] Figure 12 the schematic diagram of another assembly process of the inverter pre-assembly device, the device to be assembled and the inverter chassis of the present utility model (wherein, the device to be assembled is installed on the second jig);

[0030] Figure 13 the schematic diagram of another assembly process of the inverter pre-assembly device, the device to be assembled and the inverter chassis of the present utility model (wherein, the inverter chassis is installed on the first jig);

[0031] Figure 14 the schematic diagram of yet another assembly of the inverter pre-assembly device, the device to be assembled and the inverter chassis of the present utility model (wherein, the inverter chassis is in the inverted position);

[0032] Figure 15 Shows Figure 14 the rear view of the inverter pre-assembly device, the device to be assembled and the inverter chassis of.

[0033] Among them, the above-mentioned drawings include the following reference numerals:

[0034] 1. Inverter chassis; 103. Locating pin; 2. Device to be assembled; 201. Radiator; 202. Reactor; 203. Cable; 204. Locating hole; 205. Frame plate; 206. Lateral limiting block; 207. First positioning block; 208. Second positioning block; 209. L-shaped connecting piece; 210. Mounting piece; 211. Fixed block; 212. Underframe; 3. Sheet metal cover; 10. Machine frame; 11. Cabinet door; 12. Buckle; 20. First jig; 30. Second jig; 302. Second support seat; 303. Third positioning block; 304. Guide block; 305. Guide frame; 306. Guide sleeve; 307. Reactor limiting block; 308. Hoisting ring; 309. First chamber; 310. Second chamber; 311. Positioning substrate; 40. Lifting mechanism; 41. Mounting body; 42. Moving body; 43. Flange joint; 44. Sliding sleeve; 45. Base plate; 46. First column; 47. Third column; 48. Top plate; 49. Connecting block; 50. Movable plate; 51. First support seat; 52. Rotating shaft; 53. Main force-applying member; 54. Guide member; 541. Slide rail base plate; 55. Sliding member; 56. Auxiliary power member; 57. Driving part; 61. Limiting seat; 62. Buffer member; 63. Support member; 71. Positioning cavity; 72. Connecting member; 73. Limiting member; 81. Tool box; 82. First control switch; 83. Second control switch; 84. Second column; 85. Tooling limiting block; 86. Connecting plate; 87. Tooling limiting plate. Detailed implementation manners

[0035] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0036] As Figures 1 to 7 and Figures 11 to 14 shown, the embodiment of the present utility model provides an inverter pre-assembly device. The inverter pre-assembly device includes a machine frame 10; a first jig 20, arranged on the machine frame 10, and the first jig 20 is used for positioning the inverter chassis 1; a second jig 30, used for positioning the device to be assembled 2, the second jig 30 is located below the first jig 20, and the second jig 30 is movably arranged relative to the machine frame 10; a lifting mechanism 40, arranged on the machine frame 10, and the driving end of the lifting mechanism 40 is drivingly connected to the second jig 30, so that the second jig 30 has an assembly position close to the first jig 20 and a loading position far from the first jig 20.

[0037] In the above technical solution, the second fixture 30 is placed at the loading position away from the first fixture 20. The first fixture 20 is used to position the inverter chassis 1, and the second fixture 30 is used to position the device to be assembled 2. Compared with the prior art in which one technician needs to lift the inverter chassis 1 and another technician installs the device to be assembled 2 inside the inverter chassis 1, in this embodiment, the driving end of the driving mechanism can be used to drive the second fixture 30 to move towards the first fixture 20, so that the second fixture 30 is in the assembling position close to the first fixture 20, so that the device to be assembled 2 fits the corresponding position at the bottom of the inverter chassis 1, so that the device to be assembled 2 can be installed at the bottom of the inverter chassis 1, facilitating the pre-assembly operation of the inverter chassis 1. In this way, on the one hand, manual calibration is not required, and the pre-assembly operation of the device to be assembled 2 can be completed at one time, thus avoiding the phenomenon that it is difficult to install during the manual pre-assembly operation, and further improving the assembly efficiency; on the other hand, it can also avoid the phenomenon that the local deformation of the chassis is caused by improper manual operation, thus avoiding the influence on the sealing performance of the chassis; on the third hand, two technicians are not required for the pre-assembly operation, so that the labor cost can be reduced.

[0038] It should be noted that in the embodiment of the present invention, the device to be assembled 2 is a reactor 202 and a radiator 201.

[0039] Such as Figure 2 、 Figure 4 and Figure 11 As shown, in the embodiment of the present invention, the second fixture 30 also has a wiring position, which is located between the assembling position and the loading position, and the driving end is used to drive the second fixture 30 to switch between the assembling position, the wiring position and the loading position.

[0040] In the above technical solution, the driving end of the lifting mechanism 40 is used to drive the second fixture 30 to move towards the first fixture 20, so that the second fixture 30 is switched from the loading position to the wiring position. In this way, the wire harness of the device to be assembled 2 can be extended into the inverter chassis 1 for wiring. After the wiring operation is completed, the lifting mechanism 40 is used to drive the second fixture 30 to move towards the first fixture 20, so that the second fixture 30 is switched from the wiring position to the assembling position, so that the device to be assembled 2 can fit the corresponding position at the bottom of the inverter chassis 1, facilitating the pre-assembly operation of the inverter chassis 1.

[0041] Specifically, in the embodiment of the present invention, the reactor 202 has a plurality of cables 203, and the inverter chassis 1 has a plurality of through holes. When the second fixture 30 is switched to the wiring position, the technician manually pulls the plurality of cables 203 on the reactor 202 to make the plurality of cables 203 pass through the plurality of through holes on the inverter chassis 1, so that the wiring operation of the inverter chassis 1 can be completed.

[0042] Specifically, in the embodiments of the present utility model, a plurality of threaded holes are provided on the radiator 201, and a plurality of threaded holes are also provided on the reactor 202. A plurality of first threaded holes and second threaded holes are provided on the inverter chassis 1. When the second jig 30 is switched from the wiring position to the assembly position, the device 2 to be assembled is completely attached to the outer bottom wall of the inverter chassis 1. A plurality of cables 203 on the reactor 202 correspond to a plurality of through holes on the inverter chassis 1 one by one. A plurality of threaded holes on the radiator 201 correspond to a plurality of first threaded holes on the inverter chassis 1 one by one. Technicians use tools to perform screw driving operations at the bottom of the inverter chassis 1 to lock and fix the radiator 201 to the bottom of the inverter chassis 1. A plurality of threaded holes on the reactor 202 correspond to a plurality of second threaded holes on the inverter chassis 1 one by one. Technicians use tools to perform screw driving operations at the bottom of the inverter chassis 1 to lock and fix the reactor 202 to the bottom of the inverter chassis 1.

[0043] Such as Figure 1 、 Figure 2 、 Figure 4 and Figure 11 As shown in

[0044] In the above technical solution, by using one lifting member, two mounting bodies 41 can be driven to drive the second jig 30 to move in the direction close to the first jig 20, so that the second jig 30 is in the wiring position. Then, by using the other lifting member, the moving body 42 connected to the second jig 30 can be driven to drive the second jig 30 to move in the direction close to the first jig 20, so that the second jig 30 is in the assembly position. In this way, the device 2 to be assembled can be attached to the corresponding position at the bottom of the inverter chassis 1, facilitating the pre-assembly operation of the inverter chassis 1.

[0045] In some embodiments, the lifting member is a linear cylinder.

[0046] Specifically, in the embodiments of the present utility model, since the distance from the loading position to the wiring position is the stroke of a linear cylinder, when the second jig 30 is in the wiring position, there is still a certain distance between the device 2 to be assembled and the bottom of the inverter chassis 1, and this distance is the stroke of the other linear cylinder.

[0047] Specifically, in the embodiment of the present utility model, a first control switch 82 and a second control switch 83 are provided on the frame 10. The first control switch 82 and the second control switch 83 are respectively electrically connected to two linear cylinders. In this way, through the first control switch 82, the moving body 42 of one linear cylinder can be moved; through the second control switch 83, the moving body 42 of the other linear cylinder can be moved.

[0048] Specifically, in the embodiment of the present utility model, the lifting mechanism 40 further includes two flange joints 43. The moving bodies 42 of the two lifting members are respectively connected to the frame 10 and the second fixture 30 through the two flange joints 43.

[0049] Specifically, in the embodiment of the present utility model, the inverter pre-assembly device further includes a bottom plate 45, a top plate 48, and a plurality of first columns 46 for connecting the bottom plate 45 and the top plate 48. A coupling block 49 is provided on the side of the top plate 48 facing away from the bottom plate 45. The first fixture 20 is fixed on the top plate 48 through the coupling block 49. The bottom plate 45 is fixed to the bottom of the frame 10. One of the two flange joints 43 is connected to the frame 10 through the bottom plate 45.

[0050] Preferably, in the embodiment of the present utility model, the number of the first columns 46 is 4.

[0051] Specifically, in the embodiment of the present utility model, the inverter pre-assembly device further includes a movable plate 50, a plurality of sliding sleeves 44, a tooling limit plate 87, and a plurality of second columns 84. The plurality of sliding sleeves 44 are slidably matched with the plurality of first columns 46 correspondingly. The plurality of second columns 84 are used to connect the tooling limit plate 87 and the movable plate 50. The movable plate 50 is slidably matched with the plurality of first columns 46 through the plurality of sliding sleeves 44. The second fixture 30 is installed on the tooling limit plate 87. In this way, the second fixture 30 can be moved closer to or farther away from the first fixture 20 more smoothly.

[0052] Preferably, in the embodiment of the present utility model, the movable plate 50 includes two parallel plate segments.

[0053] Preferably, in the embodiment of the present utility model, the number of the second columns 84 is set to 6.

[0054] Specifically, in the embodiment of the present utility model, a plurality of tooling limit blocks 85 are provided on the tooling limit plate 87. The tooling limit blocks 85 can limit the second fixture 30 to facilitate the installation of the second fixture 30 on the tooling limit plate 87.

[0055] Preferably, in the embodiment of the present utility model, the number of the tooling limit blocks 85 is 4.

[0056] Specifically, in the embodiment of the present utility model, the lifting mechanism 40 further includes a plurality of third upright columns 47 and a connecting plate 86. The installation main body 41 near the bottom plate 45 is fixedly connected to the connecting plate 86. One end of the third upright column 47 is connected to the bottom plate 45, and the other end of the third upright column 47 is connected to the connecting plate 86. The third upright column 47 is telescopically arranged.

[0057] Preferably, in the embodiment of the present utility model, the number of the third upright columns 47 is set to 2.

[0058] As Figure 9 shown, in the embodiment of the present utility model, after the device to be assembled 2 is installed at the bottom of the inverter chassis 1, the sheet metal cover 3 needs to be installed at the outer bottom of the inverter chassis 1 to cover the device to be assembled 2 between the inverter chassis 1 and the sheet metal cover 3. Among them, a plurality of through holes are provided on the sheet metal cover 3. As Figure 10 shown, a plurality of positioning pins 103 are provided on the inverter chassis 1, and the positioning pins 103 have internal threads.

[0059] As Figure 1 、 Figure 3 、 Figure 11 、 Figure 13 and Figure 14 shown, in the embodiment of the present utility model, the first fixture 20 is rotatably arranged relative to the frame 10.

[0060] In the above technical solution, after the device to be assembled 2 is installed at the bottom of the inverter chassis 1, the first fixture 20 can be flipped, so that the first fixture 20 drives the inverter chassis 1 to flip, thereby exposing the bottom of the inverter chassis 1, and then facilitating the technician to align the sheet metal cover 3 with the bottom of the inverter chassis 1, so that a plurality of positioning pins 103 on the inverter chassis 1 pass through the corresponding through holes of the sheet metal cover 3, and then the sheet metal cover 3 is fixed on the inverter chassis 1 by screwing, so that the pre-assembly operation of the inverter chassis 1 can be facilitated.

[0061] As Figure 1 、 Figure 3 、 Figure 11 、 Figure 13 、 Figure 14 and Figure 15 shown, in the embodiment of the present utility model, the first fixture 20 has a first end and a second end arranged oppositely. The inverter pre-assembly device further includes: a pivot member, including a first support seat 51 and a rotating shaft 52. The first support seat 51 is arranged on the frame 10, the rotating shaft 52 is connected to the first end, and the rotating shaft 52 is rotatably connected to the first support seat 51; a main force-applying member 53, connected to the second end. Under the action of an external force, the main force-applying member 53 drives the second end to rotate around the axis of the rotating shaft 52, so that the second end has a flipping position of lifting and moving away from the frame 10 and an installation position of falling and approaching the frame 10.

[0062] In the above technical solution, under the action of an external force, the main force - applying member 53 drives the second end of the first jig 20 to rotate around the axis of the rotating shaft 52 (i.e., Figure 1 rotating in the clockwise direction in

[0063] ), so that the first jig 20 is switched from the installation position where it drops and approaches the frame 10 to the flipping position where it rises and moves away from the frame 10, thereby exposing the bottom of the inverter chassis 1. In this way, it is convenient to fix the sheet - metal cover 3 on the inverter chassis 1.

[0064] Specifically, in the embodiment of the present utility model, the main force - applying member 53 is a pull rod. By lifting the pull rod, a technician can make the first end of the first jig 20 rotate around the second end. Figure 1 、 Figure 3 、 Figure 11 、 Figure 14 and Figure 15 As shown in

[0065] In the embodiment of the present utility model, in the direction from the first end to the second end, the first support seat 51 is slidably disposed on the frame 10.

[0066] With the above - mentioned arrangement, first pull the pull rod to make the first support seat 51 slide on the frame 10. During the sliding process of the first jig 20, then lift the pull rod to flip the first jig 20 from the installation position to the flipping position. In this way, the effect of saving effort can be achieved. Figure 1 、 Figure 3 、 Figure 14 and Figure 15 As shown in

[0067] In the above - mentioned technical solution, by providing the guiding member 54 and the sliding member 55 that slidably cooperates with the guiding member 54, the first support seat 51 can slide on the guiding member 54. In this way, the first jig 20 can slide more smoothly in the direction from the first end to the second end.

[0068] Specifically, in the embodiment of the present utility model, there are two guiding members 54. Along the direction perpendicular to the direction from the first end to the second end, the two guiding members 54 are respectively located on both sides of the first jig 20. Among them, the guiding member 54 is a linear guide rail, the sliding member 55 is a slider, the first support seat 51 is fixedly connected to the slider, and a groove corresponding to the linear guide rail is provided on the side of the slider facing away from the first support seat 51. In this way, the slider can slide on the linear guide rail.

[0069] Specifically, in the embodiment of the present utility model, the guiding member 54 further includes a slide rail bottom plate 541, which is detachably fixed on the frame 10, and the slide rail bottom plate 541 is connected to the top plate 48 through a coupling block 49.

[0070] As Figure 3 , Figure 11 , Figure 13 and Figure 14 shown, in the embodiment of the present utility model, the inverter pre-assembly device further includes an auxiliary power member 56, the auxiliary power member 56 is pivotally connected to the first support seat 51, the driving part 57 of the auxiliary power member 56 is pivotally connected to the first fixture 20, the driving part 57 is used to provide a supporting force to the first fixture 20, and the first end, the pivot point between the auxiliary power member 56 and the first support seat 51, the pivot point between the driving part 57 and the first fixture 20, and the second end are arranged in sequence.

[0071] With the above settings, during the process of the technician flipping the first fixture 20, the driving part 57 can move away from the first support seat 51 relative to the pivot point between the auxiliary power member 56 and the first support seat 51, so that the driving part 57 can provide a supporting force to the first fixture 20, and further can provide assistance during the process of manually flipping the inverter chassis 1.

[0072] In some embodiments, the auxiliary power member 56 is a pneumatic spring.

[0073] Specifically, in the embodiment of the present utility model, the inverter pre-assembly device further includes a mounting member 210 and a fixing block 211 that are connected and arranged at an angle, wherein the fixing block 211 is connected to the first support seat 51, and the mounting member 210 is pivotally connected to the auxiliary power member 56 through a pin shaft, and the mounting member 210 is in a "T" shape.

[0074] As Figure 1 , Figure 3 and Figure 11 shown, in the embodiment of the present utility model, a limit seat 61 is provided on the frame 10, a limit groove is provided on the limit seat 61, a buffer member 62 is provided on the second end, and when the first fixture 20 is in the installation position, the buffer member 62 is inserted and matched with the limit groove.

[0075] In the above technical solution, when the first fixture 20 is in the installation position, the buffer member 62 is inserted into the limit groove of the limit seat 61, so that the first fixture 20 can be kept in the installation position, thereby preventing the first fixture 20 from moving on the guiding member 54.

[0076] In some embodiments, the buffer member 62 is made of a flexible material, so that when the first fixture 20 is switched from the flipping position to the installation position, the buffer member 62 can play a buffering role during the process of being inserted and matched with the limit seat 61.

[0077] As Figure 3 shown, in the embodiment of the present utility model, a support member 63 is provided at the first end of the first fixture 20. When the first fixture 20 is in the flipped position, the support member 63 supports on the frame 10.

[0078] Through the above arrangement, when the first fixture 20 is in the flipped position, the support member 63 can support the first fixture 20, so that the first fixture 20 and the inverter chassis 1 on the first fixture 20 can stand on the frame 10, facilitating the technician to install the sheet metal cover 3 on the inverter chassis 1.

[0079] Specifically, in the embodiment of the present utility model, the support member 63 includes a first plate segment and a second plate segment connected to each other. The first plate segment is fixedly connected to the first fixture 20, and the included angle between the second plate segment and the first plate segment is 90°; wherein, when the first fixture 20 is in the flipped position, the second plate segment contacts the second fixture 30, so that the support member 63 can provide a supporting force to the first fixture 20.

[0080] It should be noted that in the embodiment of the present utility model, when the first fixture 20 is in the flipped position, the included angle between the first fixture 20 and the frame 10 is 90°, and the support member 63 can keep the included angle between the first fixture 20 and the frame 10 at 90°.

[0081] As Figure 1 , Figure 3 , Figure 5 , Figure 6 , Figure 11 , Figure 12 and Figure 13 shown, in the embodiment of the present utility model, the first fixture 20 has a positioning cavity 71. The inverter pre-assembly device includes a connecting member 72 and a limiting member 73. The connecting member 72 is connected to the first fixture 20, and the limiting member 73 is rotatably arranged relative to the connecting member 72. The limiting member 73 has a limiting position located above the positioning cavity 71 to limit the inverter chassis 1 and a release position away from the positioning cavity 71 to release the inverter chassis 1.

[0082] In the above technical solution, when the first fixture 20 is in the installation position, by rotating the limiting member 73, the limiting member 73 is located above the positioning cavity 71 and contacts the inverter chassis 1 in the positioning cavity 71, so that the inverter chassis 1 can be limited, thus avoiding the phenomenon of shaking of the inverter chassis 1 during the flipping process; after the assembly of the inverter chassis 1 is completed, the limiting member 73 is rotated to a position away from the positioning cavity 71 to release the inverter chassis 1, so that it is convenient to remove the inverter chassis 1.

[0083] Specifically, in the embodiment of the present utility model, the limiting member 73 is a limiting lever, which can prevent the inverter chassis 1 from shaking when it is in the inverted position. The limiting lever includes a first rod section and a second rod section. The first rod section is rotatably connected to the connecting member 72, and an operating end is provided on the second rod section. By rotating the operating end, the inverter chassis 1 can be fixed, which is convenient for operation.

[0084] Specifically, in the embodiment of the present utility model, the connecting member 72 includes a third plate section, a fourth plate section and a fifth plate section. The third plate section and the fourth plate section are arranged at an angle, and the fourth plate section and the fifth plate section are arranged at an angle. The third plate section is fixedly connected to the first fixture 20, and a convex block is provided on the fifth plate section. The convex block has a groove, and the first rod section of the limiting member 73 is rotatably arranged in the groove.

[0085] In some embodiments, two limiting members 73 are provided.

[0086] Specifically, in the embodiment of the present utility model, the first fixture 20 includes a chassis 212 and three frame plates 205 arranged on the chassis 212. The three frame plates 205 are sequentially connected along the circumferential direction of the positioning cavity 71. The three frame plates 205 are arranged at an angle to each other, and adjacent two frame plates 205 are connected by an L-shaped connecting member 209. Among them, the first frame plate 205 is connected to one end of the main force-applying member 53, and the last frame plate 205 is connected to the other end of the main force-applying member 53 to enclose the positioning cavity 71.

[0087] Specifically, in the embodiment of the present utility model, the first fixture 20 further includes a lateral limiting block 206, a first positioning block 207 and a second positioning block 208. A lateral limiting block 206 is provided on one side of each frame plate 205 facing the positioning cavity 71. A first positioning block 207 and a second positioning block 208 are provided on the middle frame plate 205 among the three frame plates 205. Among them, the lateral limiting block 206 can clamp and limit the inverter chassis 1, and the first positioning block 207 and the second positioning block 208 are used to support the inverter chassis 1. In this way, the inverter chassis 1 can be limited to facilitate the installation of the inverter chassis 1 on the first fixture 20.

[0088] Specifically, as Figure 1 shown, in the embodiment of the present utility model, a cabinet door 11 is provided on the frame 10.

[0089] Specifically, in an embodiment of the present utility model, the inverter pre-assembly device further includes a buckle 12. The buckle 12 includes a base, a movable member, a locking member, and a tongue. The base is disposed on the frame 10, the locking member is fixed to the base, the movable member is movably disposed on the base, and the tongue is disposed on the main force-applying member 53. When the first jig is in the installation position, by manually rotating the movable member, the locking member can be locked with the tongue, so that the frame 10 and the main force-applying member 53 can be fixed, thereby fixing the first jig 20 and preventing the first jig 20 from shaking. When the inverter chassis 1 needs to be flipped, by manually rotating the movable member, the locking member is unlocked from the tongue.

[0090] Specifically, in an embodiment of the present utility model, the inverter pre-assembly device further includes two tool boxes 81, and the tool boxes 81 are disposed on the frame 10. In this way, tools such as screws can be placed in the tool boxes 81 for convenient access.

[0091] Specifically, in an embodiment of the present utility model, as Figure 8 shown, a positioning hole 204 is provided at the bottom of the reactor 202. The second jig 30 includes a positioning substrate 311 and a plurality of reactor limiting blocks 307, a plurality of guide sleeves 306, a plurality of guide frames 305, and a plurality of guide blocks 304 disposed on the positioning substrate 311. The plurality of guide frames 305 can support the plurality of guide blocks 304. The plurality of guide blocks 304 facilitate the installation of the reactor 202 on the second jig 30. The plurality of reactor limiting blocks 307 are used to limit the reactor 202. The plurality of guide sleeves 306 are in positioning cooperation with the plurality of positioning holes 204. In this way, a plurality of reactors 202 can be positioned. Among them, the positioning substrate 311 and the tooling limit plate 87 are in positioning cooperation through a plurality of tooling limit blocks 85.

[0092] Specifically, in an embodiment of the present utility model, the second jig 30 further includes a plurality of second support seats 302 disposed on the positioning substrate 311 and a plurality of third positioning blocks 303 correspondingly connected to the plurality of second support seats 302. The plurality of second support seats 302 support the plurality of third positioning blocks 303, and the plurality of third positioning blocks 303 can position the radiator 201.

[0093] Specifically, in an embodiment of the present utility model, the second jig 30 has a first chamber 309 and a second chamber 310, and the first chamber 309 and the second chamber 310 can position the radiator 201.

[0094] Specifically, in an embodiment of the present utility model, the second jig 30 further includes a lifting ring 308 disposed on the positioning substrate 311 to facilitate the assembly of the second jig 30 on the tooling limit plate 87.

[0095] It should be noted that in the embodiment of the present utility model, the installation process of the inverter chassis 1 is as follows: First, the second jig 30 can be fixed on the tooling limit plate 87 through a plurality of tooling limit blocks 85. Secondly, the radiator 201 is installed on the second jig 30 through the first chamber 309, the second chamber 310, and a plurality of third positioning blocks 303, and the reactor 202 is installed in the limit cavity defined by the reactor limit block 307 and the positioning substrate 311. The guide sleeve 306 can play a role in positioning the reactor 202 to facilitate the installation of the reactor 202 on the second jig 30. Finally, the lateral limit block 206, the first positioning block 207, and the second positioning block 208 of the first jig 20 can position the inverter chassis 1 to facilitate the installation of the inverter chassis 1 on the first jig 20.

[0096] Specifically, in the embodiment of the present utility model, the pre-installation process of the inverter chassis 1 is as follows: Step 1, according to the inverter model to be produced, select the corresponding model of the second jig 30 and fixedly install it on the tooling limit plate 87 (in actual production, one second jig 30 can be compatible with multiple different models of inverters), and lock the buckle 12; Step 2, the technician rotates the first control switch 82 and the second control switch 83 to make the lifting mechanism 40 move downward in Figure 1 to ensure that the second jig 30 completely descends; Step 3, the technician sequentially places the radiator 201 and the reactor 202 on the second jig 30 (the guide sleeve 306, the reactor limit block 307, the guide block 304, the third positioning block 303, etc. of the second jig 30 are specifically set according to the actual characteristics of the reactor 202 and the radiator 201 at the bottom of the inverter chassis 1); Step 4, the technician (through a lifting device such as a balance crane) places the inverter chassis 1 on the first jig 20; at the same time, manually rotate the limiting member 73 to fix the inverter chassis 1 and the first jig 20; Step 5, the technician operates the first control switch 82 to fully extend a linear cylinder, so that the second jig 30 moves to the wiring position, and the technician manually pulls a plurality of cables 203 on the reactor 202 through the corresponding through holes to the inside of the inverter chassis 1; Step 6, the technician rotates the second control switch 83 to fully extend another linear cylinder. At this time, the reactor 202 and the radiator 201 are completely attached to the outer bottom wall of the inverter chassis 1, and the threaded holes on the reactor 202 and the radiator 201 exactly correspond to the first threaded holes and the second threaded holes on the inverter chassis 1 one by one; Step 7, the technician uses tools such as an electric screwdriver to drive screws on the inner bottom of the inverter chassis 1 to lock and fix the radiator 201 and the reactor 202 to the bottom of the inverter chassis 1; Step 8, the technician applies sealant at the through hole gaps; Step 9, the technician operates the first control switch 82 and the second control switch 83 in sequence to move the second jig 30 in Figure 1Move downward; Step ten, release the buckle 12 to unlock the frame 10 and the main force-applying member 53; Step eleven, the technician pulls the main force-applying member 53 and flips the inverter chassis 1 so that the inverter chassis 1 is in the flipped position; Step twelve, the technician aligns the sheet metal cover 3 with the outer bottom of the inverter chassis 1 and then screws the sheet metal cover 3 to the outer bottom of the inverter chassis 1; Step thirteen, the technician pushes the main force-applying member 53 to make the inverter chassis 1 in the installed position, locks the buckle 12, and at the same time rotates the limiting member 73 to disengage from the inverter chassis 1; Step fourteen, the technician (using a hoisting device such as a balance crane) removes the pre-assembled inverter chassis 1 from the inverter pre-assembly device and places it on the transfer cart. By repeating the above steps in sequence, the pre-assembly operation of the next inverter chassis 1 can be carried out.

[0097] Specifically, in the embodiment of the present invention, by using the inverter pre-assembly device, on the one hand, the assembly efficiency of the inverter chassis 1 can be improved. The reactor 202, the radiator 201, and the inverter chassis 1 have been positioned on the first fixture 20 and the second fixture 30, and there is no need for manual alignment of the threaded holes on the reactor 202 and the radiator 201 with the first threaded holes and the second threaded holes at the bottom of the inverter chassis 1 one by one, making the screw-locking process of the reactor 202 and the radiator 201 more convenient; on the other hand, the labor cost can be reduced, and only one technician is required to complete the pre-assembly operation of the inverter chassis 1. On the other hand, compared with manual pre-assembly of the inverter chassis 1, during the entire pre-assembly process of the inverter chassis 1, the forces at various parts are relatively uniform, and the inverter chassis 1 will not undergo local deformation. In this way, the overall airtightness of the inverter chassis 1 can be prevented from being affected.

[0098] Specifically, in the embodiment of the present invention, the reactor 202, the radiator 201, and the inverter chassis 1 are automatically pre-positioned on the inverter pre-assembly device, and the reactor 202 and the radiator 201 are synchronously aligned with the corresponding positions close to the bottom of the inverter chassis 1. In this way, without manual calibration, the screw-pre-installation operation of the reactor 202 and the radiator 201 can be completed at one time.

[0099] From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects: The second fixture is in the loading position away from the first fixture. The first fixture is used to position the inverter chassis, and the second fixture is used to position the device to be assembled. Compared with the prior art where one technician needs to lift the inverter chassis and another technician installs the device to be assembled inside the inverter chassis, in this embodiment, the driving end of the driving mechanism can be used to drive the second fixture to move towards the first fixture, so that the second fixture is in the assembly position close to the first fixture, so that the device to be assembled fits the corresponding position at the bottom of the inverter chassis, thereby the device to be assembled can be installed at the bottom of the inverter chassis to facilitate the pre-assembly operation of the inverter chassis. In this way, on the one hand, manual calibration is not required, and the pre-assembly operation of the device to be assembled can be completed at one time, thus avoiding the phenomenon that it is difficult to install during the manual pre-assembly operation, and further improving the assembly efficiency; on the other hand, it can also avoid the phenomenon that the local deformation of the chassis occurs due to improper manual operation, thus avoiding the phenomenon that affects the sealing performance of the chassis; on the third hand, two technicians are not required for the pre-assembly operation, so the labor cost can be reduced.

[0100] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An inverter pre-assembly device, characterized in that, Comprising: A frame (10); A first fixture (20) disposed on the frame (10), the first fixture (20) being used for positioning an inverter chassis (1); A second fixture (30) for positioning a device to be assembled (2), the second fixture (30) being located below the first fixture (20), and the second fixture (30) being movably disposed relative to the frame (10); A lifting mechanism (40) disposed on the frame (10), a driving end of the lifting mechanism (40) being drivingly connected to the second fixture (30) so that the second fixture (30) has an assembly position close to the first fixture (20) and a loading position far from the first fixture (20).

2. The pre-assembly device of the inverter according to claim 1, characterized in that The second fixture (30) further has a wiring position located between the assembly position and the loading position, and the driving end is used for driving the second fixture (30) to switch between the assembly position, the wiring position and the loading position.

3. The pre-assembly device for an inverter according to claim 2, wherein, The lifting mechanism (40) includes two lifting members, each lifting member having a mounting body (41) and a moving body (42) movably disposed relative to the mounting body (41), the two mounting bodies (41) being connected, one of the two moving bodies (42) being connected to the frame (10), and the other of the two moving bodies (42) being connected to the second fixture (30), wherein the moving body (42) connected to the second fixture (30) forms the driving end.

4. The pre-assembly device for an inverter according to any one of claims 1 to 3, characterized in that, The first fixture (20) is pivotally disposed relative to the frame (10).

5. The pre-assembly device for an inverter according to claim 4, characterized in that The first fixture (20) has a first end and a second end disposed opposite to each other, and the inverter pre-assembly device further includes: A pivoting member including a first support base (51) and a rotating shaft (52), the first support base (51) being disposed on the frame (10), the rotating shaft (52) being connected to the first end, and the rotating shaft (52) being rotatably connected to the first support base (51); A main force-applying member (53) connected to the second end, under the action of an external force, the main force-applying member (53) driving the second end to rotate around the axis of the rotating shaft (52) so that the second end has a flipping position of lifting and moving away from the frame (10) and an installation position of falling and approaching the frame (10).

6. The pre-assembly device for an inverter according to claim 5, characterized in that, In the direction from the first end to the second end, the first support base (51) is slidably disposed on the frame (10).

7. The pre-assembly device for an inverter according to claim 6, characterized in that, The inverter pre-assembly device further includes a guiding member (54) and a sliding member (55), the sliding member (55) sliding on the guiding member (54), the sliding member (55) being provided on the first support base (51), and the guiding member (54) being provided on the frame (10).

8. The pre-assembly device for an inverter according to claim 5, characterized in that, The inverter pre-assembly device further includes an auxiliary power member (56). The auxiliary power member (56) is pivotally connected to the first support base (51). A driving portion (57) of the auxiliary power member (56) is pivotally connected to the first jig (20). The driving portion (57) is configured to provide a supporting force to the first jig (20). The first end, the pivot point between the auxiliary power member (56) and the first support base (51), the pivot point between the driving portion (57) and the first jig (20), and the second end are arranged in sequence.

9. The pre-assembly device of an inverter according to claim 5, characterized in that, A limiting seat (61) is provided on the frame (10). A limiting groove is provided on the limiting seat (61). A buffer member (62) is provided on the second end. When the first jig (20) is in the installation position, the buffer member (62) is inserted into and cooperates with the limiting groove; and / or, A support member (63) is provided at the first end of the first jig (20). When the first jig (20) is in the flipping position, the support member (63) supports on the frame (10).

10. The pre-assembly device for an inverter according to any one of claims 1 to 3, characterized in that, The first jig (20) has a positioning cavity (71). The inverter pre-assembly device includes a connecting member (72) and a limiting member (73). The connecting member (72) is connected to the first jig (20). The limiting member (73) is rotatably arranged relative to the connecting member (72). The limiting member (73) has a limiting position located above the positioning cavity (71) to limit the inverter chassis (1) and a releasing position away from the positioning cavity (71) to release the inverter chassis (1).

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