Vibration test table for automobile generators

Abstract

A vibration test table for an automobile generator includes a vibration table, a driving device and a tensioning device, the vibration table includes a table body and a moving coil located on the table body, the moving coil protrudes from the upper end surface of the table body, a generator is fixed to the table body, a rotating shaft of the driving device is rotatably connected to a rotor of the generator via a belt, the tensioning device applies a first tension to a stator of the generator, when the moving coil is stationary, the second tension of the belt and the first tension relative to the rotor are located on the same straight line, are opposite to each other and have the same magnitude, and the straight line is perpendicular to the vibration direction of the moving coil. The vibration test table can perform a vibration test of an automobile generator.

Description

[Technical Field]

[0001] (Related Applications) This application claims priority from a Chinese patent application filed on September 27, 2021, application number 202111134760.8, with the invention title "Vibration test table for automobile generators," the entire contents of which are incorporated herein by reference.

[0002] The present invention relates to the field of vibration technology, and in particular to vibration test tables for automotive generators. [Background technology]

[0003] 2. Description of the Related Art Automobiles are a means of transportation commonly used in daily life, and automobiles are usually equipped with many electronic devices that require power consumption. Therefore, automobiles are usually equipped with a generator, and the engine is used to rotate the rotor of the generator to supply electrical energy to the electronic devices.

[0004] Naturally, vibrations occur when a vehicle is running, and these vibrations affect the normal operation and lifespan of the generator, especially when the generator is in operation. Therefore, vibration tests of the generator during operation are required during the design and production process of the vehicle. Summary of the Invention

[0005] SUMMARY OF THE INVENTION In view of this, it is a primary object of the present invention to provide a vibration test table for automotive generators.

[0006] To achieve the above object, the technical solution of the present invention is realized as follows: A vibration test table for an automobile generator includes a vibration table, a drive unit, and a tensioning device, the vibration table includes a table body and a moving coil located on the table body, the upper end of the moving coil protrudes from the upper end surface of the table body, the vibration table can drive the moving coil to vibrate in an up-down direction, the drive unit and tensioning device are respectively located on the left and right sides of the moving coil, a generator is fixed to the upper end surface of the table body, the rotation shaft of the drive unit is rotatably connected to the rotor of the generator via a first belt, the tensioning device applies a first tension to the stator of the generator, when the moving coil is stationary, the second tension of the first belt and the first tension relative to the rotor are located on the same straight line, are opposite in direction and have the same magnitude, and the straight line is perpendicular to the vibration direction of the moving coil.

[0007] In a refinement of this embodiment of the invention, the drive device is provided with a first tension adjusting pulley for adjusting the tension of the first belt.

[0008] As an improved embodiment of the present invention, the table further includes a test box fixed to the upper end surface of the table body, the test box is provided with a storage space, a through-hole is provided at the lower end of the test box, the through-hole is connected to the storage space, the upper end of the moving coil reaches the back of the through-hole, the tension device is fixed to the bottom surface of the storage space, the drive device is located on the right side of the test box, and a through-hole is provided on the right wall of the test box for the first belt to pass through.

[0009] In a refinement of this embodiment of the present invention, the tensioning device includes a pulley fixed to the bottom surface of the accommodating space, a pulley fixed to the stator of the generator, and a second belt arranged between these two pulleys.

[0010] In a refinement of this embodiment of the invention, the tensioning device further comprises a second tension adjusting pulley for adjusting the tension of the second belt.

[0011] As an improved embodiment of the present invention, the table may further include a base having support columns extending upward on both the left and right sides, and a rotary shaft extending outward along the left-right direction is provided on both the left and right sides of the table body, the axis of the two rotary shafts is the same, and the rotary shafts on both the left and right sides are rotatably connected to the support columns on both the left and right sides, respectively, the drive unit rotates around the axis center of the rotary shaft, and the distance between the drive unit and the axis center is constant during the rotation process.

[0012] A refinement of this embodiment of the invention further comprises a power consuming device electrically connected to the power supply terminals of the generator.

[0013] In a refinement of this embodiment of the invention, both the rotation shaft and the rotor extend along a horizontal direction.

[0014] As an improved embodiment of the present invention, the device may further include a fixing device consisting of a horizontal plate and a vertical plate fixed to each other, with a plurality of reinforcing ribs provided between the horizontal plate and the vertical plate, wherein the horizontal plate is fixed to an upper end of the moving coil, the stator of the generator is fixed to the vertical plate, the rotor passes through the vertical plate, and the first tension force acts on the vertical plate.

[0015] In a refinement of this embodiment of the invention, said drive device is an electric motor. [Effects of the Invention]

[0016] The vibration test table for automobile generators provided by the present invention has the following advantages. The vibration test table for automobile generators provided by the present invention includes a vibration table, a drive unit, and a tensioning device. The vibration table includes a table body and a moving coil located on the table body, the upper end of the moving coil protruding from the upper surface of the table body. The vibration table can drive the moving coil to vibrate up and down. The drive unit and tensioning device are located on both the left and right sides of the moving coil, respectively. A generator is fixed to the upper surface of the table body. The rotation shaft of the drive unit is rotatably connected to the rotor of the generator via a first belt. The tensioning device applies a first tension to the stator of the generator. When the moving coil is stationary, the second tension of the first belt and the first tension relative to the rotor are on the same line, are opposite in direction, and are equal in magnitude, and the line is perpendicular to the vibration direction of the moving coil. This vibration test table can be used to perform vibration tests on automobile generators. [Brief explanation of the drawings]

[0017] [Figure 1A] 1 is a structural diagram of a vibration test table provided by an embodiment of the present invention; [Figure 1B] 1 is a structural diagram of a vibration test table provided by an embodiment of the present invention; [Figure 2] 1 is a structural diagram of a vibration test table provided by an embodiment of the present invention; DETAILED DESCRIPTION OF THE INVENTION

[0018] The present invention will be described in detail below with reference to the embodiments shown in the drawings. However, these embodiments are not intended to limit the present invention, and any structural, method or functional modifications made by those skilled in the art based on these embodiments will fall within the protection scope of the present invention.

[0019] The following description and the accompanying drawings fully explain specific embodiments of the present invention so that those skilled in the art can practice the present invention. Portions and features of some embodiments may be included in or substituted for portions and features of other embodiments. The scope of the embodiments of the present invention includes not only the full scope of the claims but also all available equivalents of the claims. In the present invention, the terms "first" and "second" are used merely to distinguish one element from another and do not require or imply a physical relationship or order between these elements. In fact, a first element may also be referred to as a second element, and vice versa. Furthermore, the terms "comprise," "contain," or other variations are intended to cover a non-exclusive inclusion of a structure, device, or apparatus that includes a set of elements, such that the structure, device, or apparatus includes not only those elements but also other indefinitely listed elements or inherent elements of such structure, device, or apparatus. Unless further limited, an element defined with the phrase "comprises" does not exclude the presence of other identical elements in a structure, apparatus, or device that includes such elements. Various embodiments of the present invention will be described progressively, with each embodiment focusing on differences from other embodiments, and references made to identical and similar parts between the various embodiments.

[0020] In the present invention, the orientations or positional relationships indicated by terms such as "vertical," "horizontal," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" are merely orientations or positional relationships based on the drawings and are used solely for the purpose of explaining and simplifying the present invention. They do not necessarily indicate or imply that such apparatus or devices have a specific orientation or are configured and operated in a specific orientation, and therefore should not be understood as limitations of the present invention. In the description of the present invention, unless otherwise expressly specified or limited, terms such as "attached," "coupled," and "connected" should be understood broadly. For example, they may refer to mechanical connection, electrical connection, internal communication between two devices, direct connection, or indirect connection via an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0021] In the accompanying drawings hereof, the meaning of orientation is as follows: "U" indicates "up", "D" indicates "down", "L" indicates "left", "R" indicates "right", "F" indicates "front", and "B" indicates "back".

[0022] The vibration test table for an automobile generator provided by the embodiment of the present invention includes a vibration table 1, a driving device 2, and a tensioning device 3. Here, as shown in FIG. 1A, the driving device 2 is located on the right side of the vibration table 1, and the tensioning device 3 is located on the left side of the vibration table 1.

[0023] The vibration table 1 includes a table body 11 and a moving coil 12 located on the table body 11, the upper end of the moving coil 12 protruding from the upper end surface of the table body 11, and the vibration table 1 can drive the moving coil 12 to vibrate in an up-down direction. The driving device 2 and tensioning device 3 are located on both the left and right sides of the moving coil 12, respectively. The vibration table 1 is provided with a cavity, the moving coil 12 is located in the cavity, and a driving device is further provided in the cavity, which drives the moving coil 12 to vibrate in an up-down direction, and the cavity is separated from the outside space.

[0024] A fixing device 5 fixed to the upper end of the moving coil 12 A generator 13 is fixed to the moving coil 12. The rotating shaft of the driving device 2 is rotatably connected to the rotor of the generator 13 via a first belt 4, and the tensioning device 3 applies a first tension to the stator of the generator 13, and when the moving coil 12 is stationary, the second tension of the first belt 4 and the first tension applied to the rotor are located on the same straight line, are opposite in direction, and are the same in magnitude, and the straight line is perpendicular to the vibration direction of the moving coil 12.

[0025] Here, the driving device 2 may be a motor or a fuel engine, etc., and is provided with a control module, which can control the output power of the driving device 2, the rotation speed of the rotating shaft, etc. The tensioning device 3 may be a spring or a belt, etc., which can apply a first tension to the stator of the generator 13, and is provided with an adjustment module for adjusting the magnitude of the first tension.

[0026] As can be seen, when the rotating shaft rotates, the rotor rotates, and the first belt 4 applies a second tension to the rotor in the right direction. As a result, the second tension ultimately acts on the moving coil 12, causing the force acting on the moving coil 12 to become uneven, which in turn affects the normal operation of the vibration table 1. However, when the moving coil 12 is stationary (when the moving coil 12 is located at the midpoint), the first and second tensions are on the same line, are opposite in direction, and have the same magnitude, so the first and second tensions cancel each other out. Furthermore, because the moving coil 12 vibrates up and down with a small amplitude around the midpoint, when the moving coil 12 vibrates up and down, the first and second tensions still cancel each other out in the left-right direction. Even if they do not completely cancel each other out, the force acting on the moving coil 12 in the left-right direction is still small.

[0027] During testing, the driving device 2 is controlled to rotate the rotor and the moving coil 12 is controlled to vibrate in the vertical direction, thereby simulating the operating state of an automobile while the generator 13 is operating.

[0028] In this embodiment, the drive unit 2 is provided with a first tension adjustment pulley 21 for adjusting the tension of the first belt 4. Here, as shown in FIGS. 1A and 1B , the drive unit 2 is fixed to a mounting base 22, a rod 23 extends upward and leftward from the mounting base 22, the rod 23 is rotatably connected to the mounting base 22, and the first tension adjustment pulley 21 is attached to the end of the rod 23 that is farther from the mounting base 22. As will be understood, the rod 23 is rotatable relative to the mounting base 22, so that the tension of the first belt 4 can be adjusted. In addition, a fixing device is provided between the rod 23 and the mounting base 22. The fixing device can be in two states: (1) a loose state in which the rod 23 is rotatable relative to the mounting base 22, and (2) a fixed state in which the rod 23 is fixed to the mounting base 22 and cannot rotate relative to the mounting base 22.

[0029] In this embodiment, a test box 6 is further provided. The test box 6 is fixed to the upper end surface of the table body 11. A storage space is provided in the test box 6, and a through-hole 61 is provided at the lower end of the test box 6. The through-hole 61 communicates with the storage space, and the upper end of the moving coil 12 reaches the back of the through-hole 61. The tension device 3 is fixed to the bottom surface of the storage space. The drive device 2 is located on the right side of the test box 6, and a through-hole is provided on the right wall of the test box 6 through which the first belt 4 passes. Here, the test box 6 is used to simulate the installation environment of the generator 13 when the automobile is in operation (for example, the temperature, humidity, etc. of the storage space can be adjusted).

[0030] In this embodiment, the tensioning device 3 includes a pulley fixed to the bottom surface of the storage space, a pulley fixed to the stator of the generator 13, and a second belt 31 arranged between these two pulleys.

[0031] In this embodiment, the tensioning device 3 further includes a second tension adjusting pulley 32 for adjusting the tension of the second belt 31 .

[0032] In this embodiment, the table further includes a base 7 having support columns 71 extending upward on both the left and right sides. Rotational shafts extend outward in the left-right direction on both the left and right sides of the table body 11. The two rotational shafts share the same axis and are rotatably connected to the support columns 71 on both sides. The drive unit 2 rotates around the center of the rotational shaft, and the distance between the drive unit 2 and the center of the shaft remains constant during rotation. In reality, an automobile generator 13 is subjected to multi-directional vibrations. In this embodiment, the vibration table 1 can rotate back and forth relative to the base 7. Rotating the vibration table 1 can simulate multi-directional vibrations. Furthermore, because the drive unit 2 can rotate around the center of the rotational shaft, the relative positions of the vibration table 1 and the drive unit 2 remain constant by rotating them synchronously.

[0033] Optionally, the drive unit 2 can be fixed to the test box 6, and further, the support post 71 can be passed through the rotation shaft to fix the drive unit 2 to the rotation shaft.

[0034] This embodiment further includes a power consuming device electrically connected to the power supply terminals of the generator 13. In practice, when the generator 13 of the automobile is operating, the generated electrical energy can be used by electronic devices in the automobile. Therefore, in order to better simulate the operating state of the generator 13, a power consuming device capable of consuming the electrical energy output from the generator 13 may be provided.

[0035] In this embodiment, both the rotating shaft and the rotor extend horizontally.

[0036] This embodiment further includes a fixing device 5 consisting of a horizontal plate 51 and a vertical plate 52 fixed to each other, with a plurality of reinforcing ribs 53 provided between the horizontal plate 51 and the vertical plate 52. The horizontal plate 51 is fixed to the upper end of the moving coil 12, the stator of the generator 13 is fixed to the vertical plate 52, and the rotor passes through the vertical plate 52, with a first tension acting on the vertical plate 52. Here, as shown in FIGS. 1A and 2 , the horizontal plate 51 is connected to the upper end of the moving coil 12 with bolts, the front end of the horizontal plate 51 is fixed to the lower end of the vertical plate 52, and reinforcing ribs 53 are provided on the left and right ends of the horizontal plate 51, respectively, and the reinforcing ribs 53 are also fixed to the left and right ends of the vertical plate 52. The vertical plate 52 has a through hole passing through the front and rear surfaces, the front surface of the vertical plate 52 is fixed to the stator of the generator 13, the rotor of the generator 13 passes through the through hole from front to rear, and a pulley is fixed to the part located on the rear surface of the rotor, and similarly, a pulley is provided in the drive device 2, and a first belt 4 is provided between the two pulleys.

[0037] In this embodiment, the drive device 2 is an electric motor.

[0038] It should be noted that although this specification has been described in the order of the embodiments, each embodiment does not include only one independent technical solution, and the description method of the specification is used for the purpose of clarity only. Those skilled in the art should understand the specification as a whole, and those skilled in the art can also combine the technical solutions in each embodiment to form other embodiments.

[0039] The above content specifically describes the feasible embodiments of the present invention, and is not intended to limit the protection scope of the present invention, and any equivalent embodiments or modifications made without departing from the spirit of the present invention shall be included within the protection scope of the present invention.

Claims

1. The apparatus comprises a vibration table (1), a driving device (2), and a tensioning device (3), The vibration table (1) includes a table body (11) having a hollow portion and a moving coil (12) located in the hollow portion of the table body (11), the upper end of the moving coil (12) protruding from the upper end surface of the table body (11), the vibration table (1) can drive the moving coil (12) to vibrate in the vertical direction, the drive device (2) and the tension device (3) are respectively arranged on both the left and right sides of the moving coil (12) so as not to vibrate in the vertical direction along with the moving coil (12), a generator (13) attached to the upper side of the moving coil (12) so as to vibrate up and down along with the moving coil (12); a rotating shaft of the drive device (2) rotatably connected to a rotor of the generator (13) via a first belt (4); the tensioning device (3) applying a first tension to a stator of the generator (13); when the moving coil (12) is stationary, the second tension of the first belt (4) against the rotor and the first tension lie on the same straight line, are opposite in direction to each other and have the same magnitude, and the straight line is perpendicular to the vibration direction of the moving coil (12).

2. 2. A vibration test table according to claim 1, characterized in that the drive (2) is provided with a first tension adjusting pulley (21) for adjusting the tension of the first belt (4).

3. The table further includes a test box (6) fixed to the upper end surface of the table body (11), the test box (6) is provided with a storage space for storing the generator (13), a through hole (61) is provided at the lower end of the test box (6), the through hole (61) is connected to the storage space, and the upper end of the moving coil (12) reaches the back of the through hole (61), 2. The vibration test table according to claim 1, wherein the tension device (3) is fixed to the bottom surface of the storage space, the drive device (2) is located on the right side of the test box (6), and a through-hole is provided in the right wall of the test box (6) for the first belt (4) to pass through.

4. The tensioning device (3) 4. The vibration test table according to claim 3, further comprising a pulley fixed to the bottom surface of the accommodation space, a pulley fixed to the stator of the generator, and a second belt provided between the two pulleys.

5. The tensioning device (3) 5. The vibration test table according to claim 4, further comprising a second tension adjusting pulley (32) for adjusting the tension of the second belt (31).

6. 2. A vibration test table according to claim 1, further comprising a power consuming device electrically connected to the power supply terminals of the generator (13).

7. 2. The vibration test table according to claim 1, wherein the rotation shaft and the rotor both extend horizontally.

8. The apparatus further comprises a fixing device (5) consisting of a horizontal plate (51) and a vertical plate (52) fixed to each other, with a plurality of reinforcing ribs (53) provided between the horizontal plate (51) and the vertical plate (52); The horizontal plate (51) is fixed to the upper end of the moving coil (12), the stator of the generator (13) is fixed to the vertical plate (52), and the rotor passes through the vertical plate (52); 5. A vibration test table according to claim 4, characterized in that the tension of the second belt (31) acts on the vertical plate (52).

9. 2. A vibration test table according to claim 1, characterized in that the drive device (2) is an electric motor.

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