Three-phase converter test bench

Abstract

The utility model discloses a three-phase converter test bench, which comprises a base, a power supply for supplying power to a to-be-tested converter and a test assembly are arranged on the base, one end of the base is provided with a fixed plate, sliding rails are arranged on two sides along the length direction of the base, and each sliding rail is connected with a protection assembly in a sliding manner. Telescopic shielding cloth is fixed between the protection assemblies on the two sliding rails, and a driving assembly used for driving the protection assemblies to move in the length direction of the base is installed on the fixing plate. The telescopic protection assembly is arranged on the test bed, the shielding cloth can cover the test bed after the test bed is used, when the test bed needs to be used, the protection assembly is recycled, use of the test bed is not affected, and the test bed can be automatically covered.

Description

Technical Field

[0001] The utility model relates to the technical field of converter testing, in particular to a three-phase converter test bench. Background Art

[0002] Three-phase inverters are used to provide power to aircraft equipment that requires three-phase AC power. Inverters convert DC power into appropriate AC voltage and frequency and are widely used in aircraft power supply systems. During the production and maintenance of inverters, it is necessary to test the working performance of the inverters to ensure that the inverters work normally during the flight of the aircraft and ensure flight safety.

[0003] At present, a three-phase converter test bench is generally used to test the working performance of the converter. However, the components of the existing three-phase converter test bench are all exposed. If each component is stored separately after use, it needs to be reassembled when it is used again, which is inefficient. Therefore, a dustproof device that can automatically cover the three-phase converter test bench is required. Utility Model Content

[0004] The utility model aims to provide a three-phase converter test bench, on which a retractable protective component is arranged, and a cloth can cover the test bench after the test bench is used. When it is needed, the protective component is recovered, which does not affect the use of the test bench and can automatically cover the test bench.

[0005] In order to solve the above technical problems, the utility model adopts the following solutions:

[0006] A three-phase converter test bench comprises a base, on which a power supply and a test component for supplying power to the converter to be tested are installed, a fixing plate is provided at one end of the base, slide rails are provided on both sides along the length direction of the base, a protection component is slidably connected to each slide rail, a retractable cover cloth is fixed between the protection components on the two slide rails, and a driving component for driving the protection component to move along the length direction of the base is installed on the fixing plate.

[0007] In some optional embodiments, each group of protection components includes a plurality of sliding rods arranged along the length direction of the base, one end of the tarpaulin is fixed to the fixed plate, and the other end is fixed to each sliding rod in turn, each sliding rod has a retractable tarpaulin fixed at one end, and a pulley is provided at the other end, and the pulley is sleeved on the sliding rail. The number of sliding rods on the two sliding rails corresponds, and a cross beam is fixed between the corresponding two sliding rods, and retractable tarpaulins are fixed on the cross beam and the sliding rod.

[0008] In some optional embodiments, a first oblique rod and a second oblique rod are movably installed at the ends of two adjacent sliding rods, two ends of the first oblique rod are movably connected to the top end and the bottom end of the two adjacent sliding rods, two ends of the second oblique rod are movably connected to the top end and the bottom end of the two adjacent sliding rods, the first oblique rod and the second oblique rod are cross-arranged and movably connected at the intersection, and all the first oblique rods and the second oblique rods form a telescopic net.

[0009] In some optional embodiments, each group of protection components corresponds to a group of driving components, and each group of driving components includes a transmission component, a driving motor and a driving block. The transmission component includes a driving shaft and a driven shaft. The driving shaft is connected to the output shaft of the driving motor, and a driving sprocket is provided on the driving shaft. The driven shaft is fixed on the base, and a driven sprocket is connected to the driven shaft. The driving shaft and the driven shaft are respectively arranged at both ends of the length direction of the base. A transmission chain is provided on the driving sprocket and the driven sprocket, and a driving block is fixed on the chain. A pull rod is fixed on the driving block, and the other end of the pull rod is fixedly connected to the sliding rod farthest away from the fixed plate.

[0010] In some optional embodiments, both ends of the bottom of the slide rail are provided with limiting members for matching with the driving block.

[0011] In some optional embodiments, the driving assembly includes two groups of transmission assemblies and a driving member, the two groups of transmission assemblies are symmetrically arranged on both sides of the base, the driving member includes a driving motor, a driving gear is fixed on the output shaft of the driving motor, two support frames are symmetrically fixed on the fixed plate perpendicular to the length direction of the base, a transmission shaft is provided between the two support frames, a transmission gear meshing with the driving gear is provided at the center of the transmission shaft, and both ends of the transmission shaft are respectively connected to the two groups of transmission assemblies.

[0012] In some optional embodiments, each transmission assembly includes a driving shaft and a driven shaft, the driving shaft is connected to the transmission shaft, the driving shaft is provided with a driving sprocket, the driven shaft is connected with a driven sprocket, the driving shaft and the driven shaft are respectively arranged at both ends of the length direction of the base, the driving sprocket and the driven sprocket are provided with a transmission chain, a driving block is fixed on the chain, a pull rod is fixed on the driving block, and the other end of the pull rod is fixedly connected to the sliding rod farthest from the fixed plate.

[0013] In some optional embodiments, both ends of the bottom of the slide rail are provided with limiting members for matching with the driving block.

[0014] In some optional embodiments, the driving member further includes a reducer, the output end of the driving motor is provided with a reducer, and the output shaft of the reducer is fixed with a driving gear.

[0015] Beneficial effects of the utility model:

[0016] The utility model discloses a three-phase converter test bench, in which protective components are installed on both sides of the test bench base, and a retractable cover cloth is set between the two sets of protective components, so that after using the test bench, the protective component can slide forward along the slide rail to unfold the retractable cover cloth to cover the top of the test bench, and a retractable net is provided on the side of the protective component, which will also unfold with the sliding of the protective component to cover the side of the test bench, and when the test bench needs to be used, it is only necessary to retract the protective component, and the retractable cover cloth and the retractable net will be retracted, which will not affect the normal use of the test bench. The present application can cover the test bench to avoid damage caused by exposure of the test bench when it is not in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A front view of a test bench with a protective assembly installed provided by an embodiment of the utility model;

[0018] Figure 2 A front view of a test bench provided with a retractable net provided in an embodiment of the utility model;

[0019] Figure 3 Based Figure 1 Side view of.

[0020] Description of reference numerals:

[0021] 1-base, 2-fixed plate, 3-slide rail, 4-protection assembly, 41-slide rod, 42-pulley, 43-crossbeam, 44-first diagonal rod, 45-second diagonal rod, 5-cover cloth, 6-transmission assembly, 61-driving sprocket, 62-driven sprocket, 63-transmission chain, 64-driving block, 65-pull rod, 66-limiting member, 67-support frame, 68-bracket, 7-driving member, 71-driving motor, 72-driving gear, 73-transmission gear, 74-transmission shaft. DETAILED DESCRIPTION

[0022] The present invention will be further described in detail below in conjunction with the embodiments and drawings, but the implementation manner of the present invention is not limited thereto.

[0023] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inside", "outside", "front", "back", "top", "bottom", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0024] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "open", "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] The present invention is described in detail below with reference to the accompanying drawings and in combination with embodiments:

[0026] Embodiment 1:

[0027] like Figures 1 to 3 As shown, this embodiment provides a three-phase converter test bench, including a base 1, on which a power supply and a test component for supplying power to the converter to be tested are installed, a fixed plate 2 is provided at one end of the base 1, and slide rails 3 are provided on both sides along the length direction of the base 1, and each slide rail 3 is slidably connected with a protective component 4, a retractable cover cloth 5 is fixed between the protective components 4 on the two slide rails 3, and a driving component for driving the protective component 4 to move along the length direction of the base 1 is installed on the fixed plate 2.

[0028] Specifically, Figure 1 As shown, each set of protection components 4 includes a plurality of slide bars 41 arranged along the length direction of the base 1, one end of the tarpaulin 5 is fixed on the fixed plate 2, and the other end is fixed to each slide bar 41 in turn, each slide bar 41 is fixed with a retractable tarpaulin 5 at one end, and a pulley 42 is provided at the other end, and the pulley 42 is sleeved on the slide rail 3, the number of slide bars 41 on the two slide rails 3 corresponds, and a crossbeam 43 is fixed between the corresponding two slide bars 41, and a retractable tarpaulin is fixed on the crossbeam 43 and the slide bar 41. The tarpaulin 5 can be a whole tarpaulin 5, one end of the tarpaulin 5 is fixed on the fixed plate 2, and then the tarpaulin 5 is fixed to the crossbeam 43 and the end of the slide bar 41 in turn, so that the tarpaulin 5 can be driven to open and close when the slide bar 41 moves.

[0029] Among them, the driving assembly can be a group of driving assemblies corresponding to each group of protection assemblies 4, and each group of driving assemblies includes a transmission assembly 6, a driving motor 71 and a driving block 64. The driving motor 71 can be fixed on the base 1 or on the fixed plate 2. The transmission assembly 6 includes a driving shaft and a driven shaft. A support frame 67 can be set on the fixed plate 2, passing through the driving shaft so that the driving shaft is connected to the output shaft of the driving motor 71. A driving sprocket 61 is sleeved on the driving shaft, and a bracket 68 is provided at the other end of the base 1 away from the fixed plate 2 to support the driven shaft. , so that the driven shaft is supported and fixed, and the driven shaft is rotatably installed on the bracket 68, and the driven shaft is connected to the driven sprocket 62, and the driving shaft and the driven shaft are respectively arranged at both ends of the length direction of the base 1, and a transmission chain 63 is sleeved on the driving sprocket 61 and the driven sprocket 62, and a driving block 64 is fixed on the chain, and a pull rod 65 is fixed on the driving block 64, and the other end of the pull rod 65 is fixedly connected to the sliding rod 41 farthest away from the fixed plate 2, so that when the driving shaft rotates, the driving sprocket 61 rotates to drive the driven sprocket 62 to rotate.

[0030] In some optional embodiments, such as Figure 3 As shown, two groups of transmission components 6 can share a group of driving parts 7. The driving components can be configured as two groups of transmission components 6 and driving parts 7. The two groups of transmission components 6 are symmetrically arranged on both sides of the base 1. The driving part 7 includes a driving motor 71 and a reducer. The output end of the driving motor 71 is provided with a reducer, and the output shaft of the reducer is fixed with a driving gear 72.

[0031] A driving gear 72 is fixed on the output shaft of the driving motor 71, and two support frames 67 are symmetrically fixed on the fixed plate 2 perpendicular to the length direction of the base 1. A transmission shaft 74 is provided between the two support frames 67. A transmission gear 73 meshing with the driving gear 72 is fixed at the center of the transmission shaft 74, and both ends of the transmission shaft 74 are respectively connected to the active rotating shafts of the two sets of transmission components 6.

[0032] In some optional embodiments, each group of transmission components 6 includes a driving shaft and a driven shaft, and the driving shaft is connected to the transmission shaft 74. A bracket 68 is provided at the other end of the base 1 away from the fixed plate 2 for supporting the driven shaft. A driving sprocket 61 is sleeved on the driving shaft, and a driven sprocket 62 is fixedly connected to the driven shaft. The driving shaft and the driven shaft are respectively arranged at both ends of the length direction of the base 1. A transmission chain 63 is sleeved on the driving sprocket 61 and the driven sprocket 62. A driving block 64 is fixed on the chain, and a pull rod 65 is fixed on the driving block 64. The other end of the pull rod 65 is fixedly connected to the sliding rod 41 at the farthest end away from the fixed plate 2.

[0033] In order to limit the position of the driving block 64 and further limit the moving position of the shade cloth 5, so as to better realize the covering and opening of the shade cloth 5, both ends of the bottom of the slide rail 3 are provided with limit members 66 for matching with the driving block 64. The limit member 66 can be a limit block or a limit switch.

[0034] Example 2

[0035] like Figure 2 As shown, the difference between this embodiment and embodiment 1 is that, in order to better cover the side of the test bench, telescopic nets are arranged on both sides of the base 1, and the telescopic nets can be retracted as the sliding of the slide bar 41, and the telescopic nets and the telescopic cover cloth 5 are synchronously retracted and retracted. The specific arrangement is as follows: a first oblique rod 44 and a second oblique rod 45 are movably installed at the ends of two adjacent slide bars 41, and the two ends of the first oblique rod 44 are respectively movably connected to the top and bottom ends of the two adjacent slide bars 41, and the two ends of the second oblique rod 45 are respectively movably connected to the top and bottom ends of the two adjacent slide bars 41, and the first oblique rod 44 and the second oblique rod 45 are respectively movably connected to the top and bottom ends of the two adjacent slide bars 41, and the first oblique rod 44 and the second oblique rod 45 are cross-arranged and movably connected at the intersection, and the cover cloth 5 is fixed on the first oblique rod 44 and the second oblique rod 45, so that all the first oblique rods 44 and the second oblique rods 45 can form a telescopic net.

[0036] The use process of this embodiment is as follows: after using the test bench, the test bench needs to be protected, the drive motor 71 is started to rotate forward, the output shaft of the drive motor 71 rotates, and the drive gear 72 is driven to rotate. Since the drive gear 72 is meshed with the transmission gear 73, the transmission gear 73 rotates in the opposite direction, so that the transmission shaft 74 drives the active sprocket 61 to rotate, and the active sprocket 61 rotates, so that the transmission chain moves toward the end of the driven sprocket 62 away from the fixed plate 2. At this time, the driving block 64 set on the transmission chain moves with the transmission chain, and the pull rod 65 on the driving block 64 pulls the end farthest from the fixed plate 2. The slide bar 41 moves toward one end of the base 1 where the driven sprocket 62 is located, and a folded cover cloth 5 is provided between adjacent slide bars 41. When the slide bar 41 keeps moving, the cover cloth 5 also gradually moves rightward and unfolds as the slide bar 41 moves, and the telescopic net also gradually unfolds as the slide bar 41 moves. When the drive block 64 moves to the position where the limit switch is located, the drive motor 71 is turned off, and the cover cloth 5 can be unfolded to cover the test bench. The cover curtain can be rotatably installed on the two slide bars 41 farthest from the fixed plate 2. When the slide bar 41 is slid to the farthest end, the cover curtain is lowered, and the cover curtain, baffle, cover cloth 5 and telescopic net cover the test bench around. Similarly, when the test bench needs to be used, the drive motor 71 is started to reverse, so that the transmission gear 73 drives the active sprocket 61 to rotate forward, so that the transmission chain drives the drive block 64 to move toward the direction of the fixed plate 2, thereby pulling the slide bar 41 back to the position of the fixed plate 2, which does not affect the normal use of the test bench.

[0037] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A three-phase converter test bench, comprising a base (1), on which a power supply for supplying power to the converter to be tested and a test assembly are mounted, characterized in that: A fixing plate (2) is provided at one end of the base (1), and slide rails (3) are provided on both sides along the length direction of the base (1), and a protection component (4) is slidably connected to each slide rail (3), and a retractable cover cloth (5) is fixed between the protection components (4) on the two slide rails (3), and a driving component for driving the protection component (4) to move along the length direction of the base (1) is installed on the fixing plate (2).

2. A three-phase converter test bench according to claim 1, characterized in that: Each group of protection components (4) comprises a plurality of slide bars (41) arranged along the length direction of the base (1), each slide bar (41) having a retractable tarpaulin (5) fixed at one end and a pulley (42) at the other end, the pulley (42) being sleeved on the slide rail (3), the number of slide bars (41) on the two slide rails (3) corresponding to each other, and a crossbeam (43) being fixed between the corresponding two slide bars (41), and the retractable tarpaulin being fixed on the crossbeam (43) and the slide bar (41).

3. A three-phase converter test bench according to claim 2, characterized in that: The ends of two adjacent sliding bars (41) are movably mounted with a first oblique bar (44) and a second oblique bar (45); the two ends of the first oblique bar (44) are movably connected to the top and bottom ends of the two adjacent sliding bars (41); the two ends of the second oblique bar (45) are movably connected to the top and bottom ends of the two adjacent sliding bars (41); the first oblique bars (44) and the second oblique bars (45) are cross-arranged and movably connected at the intersection; all the first oblique bars (44) and the second oblique bars (45) form a telescopic net.

4. A three-phase converter test bench according to claim 2, characterized in that: Each group of protection components (4) corresponds to a group of driving components, and each group of driving components includes a transmission component (6), a driving motor (71) and a driving block (64). The transmission component (6) includes a driving shaft and a driven shaft. The driving shaft is connected to the output shaft of the driving motor (71). A driving sprocket (61) is sleeved on the driving shaft. A driven sprocket (62) is connected to the driven shaft. The driving shaft and the driven shaft are respectively arranged at two ends of the base (1) in the length direction. A transmission chain (63) is sleeved on the driving sprocket (61) and the driven sprocket (62). A driving block (64) is fixed on each chain. A pull rod (65) is fixed on the driving block (64). The other end of the pull rod (65) is fixedly connected to the sliding rod (41) at the farthest end away from the fixed plate (2).

5. A three-phase converter test bench according to claim 4, characterized in that: Both ends of the bottom of the slide rail (3) are provided with stoppers (66) for matching with the drive block (64).

6. A three-phase converter test bench according to claim 2, characterized in that: The driving assembly comprises two groups of transmission assemblies (6) and a driving member (7). The two groups of transmission assemblies (6) are symmetrically arranged on both sides of the base (1). The driving member (7) comprises a driving motor (71). A driving gear (72) is fixed on the output shaft of the driving motor (71). Two supporting frames (67) are symmetrically fixed on the fixing plate (2) perpendicular to the length direction of the base (1). A transmission shaft (74) is arranged between the two supporting frames (67). A transmission gear (73) meshing with the driving gear (72) is arranged at the center of the transmission shaft (74). Both ends of the transmission shaft (74) are respectively connected to the two groups of transmission assemblies (6).

7. A three-phase converter test bench according to claim 6, characterized in that: Each transmission assembly (6) comprises a driving shaft and a driven shaft, the driving shaft is connected to the transmission shaft (74), a driving sprocket (61) is sleeved on the driving shaft, and a driven sprocket (62) is connected to the driven shaft, the driving shaft and the driven shaft are respectively arranged at two ends of the base (1) in the length direction, a transmission chain (63) is sleeved on the driving sprocket (61) and the driven sprocket (62), a driving block (64) is fixed on the chain, a pull rod (65) is fixed on the driving block (64), and the other end of the pull rod (65) is fixedly connected to the sliding rod (41) farthest away from the fixed plate (2).

8. A three-phase converter test bench according to claim 7, characterized in that: Both ends of the bottom of the slide rail (3) are provided with stoppers (66) for matching with the drive block (64).

9. The three-phase converter test bench according to claim 6, characterized in that: The driving member (7) also includes a reducer. The output end of the driving motor (71) is provided with a reducer, and the output shaft of the reducer is fixed with a driving gear (72).

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