A portable generator sway testing device

Abstract

This utility model relates to the technical field of generator runout testing equipment, and discloses a portable generator runout testing device, including a base, end plates fixedly connected to both sides of the base, and a lead screw rotatably connected between the two end plates. One side of the lead screw passes through one of the end plates and is fixedly connected to an adjusting handwheel. An extension plate is movably connected to the bottom of the base, and a connecting block is fixedly connected to one side of the extension plate. An adsorption block is movably connected to the side of the connecting block opposite to the extension plate. A mounting base is movably connected inside the base. The device is magnetically attached to the generator near the main shaft or placed directly on the ground near the generator. Testing can be performed while the generator is in use without disassembly. The measured runout data reflects the influence of actual operating conditions such as electromagnetic force and mechanical stress. This, combined with subsequent main shaft runout testing after disassembly, improves the accuracy of the main shaft test, avoids misjudgments due to data deviation, and the device has a moderate size and compact structure.

Description

Technical Field

[0001] This utility model relates to the technical field of swing test equipment, and in particular to a portable generator swing test device. Background Technology

[0002] The generator runout test is a test that detects the radial runout of the rotor when it rotates, thereby determining whether the rotor is running stably and whether the shaft is aligned.

[0003] The core of general testing is to measure the difference between the maximum and minimum readings within one revolution at different parts of the rotor using a dial indicator or displacement sensor. This difference is the runout value. Currently, some runout testing equipment needs to be disassembled when inspecting the main shaft or flange of the generator rotor in order to more comprehensively check all parts of the main shaft and flange and reduce blind spots caused by the obstruction of the unit structure. This allows the testing equipment to more easily reach each testing point. However, this testing method will cause the main shaft to be out of the actual operating conditions. The measured data cannot truly reflect the runout of the equipment when it is working. This is because the main shaft and flange in operation are affected by a combination of factors such as electromagnetic force, mechanical stress, and thermal deformation. The test results in the static state deviate greatly from the actual working state, which can easily lead to misjudgment and failure to detect potential equipment failures in time. Utility Model Content

[0004] The purpose of this invention is to provide a portable generator swing testing device that does not require disassembling the generator main shaft and can test the swing during use, making the data closely match the actual working conditions, thus effectively solving the problems in the background technology.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A portable generator sway testing device includes a base, with end plates fixedly connected to both sides of the base, and a lead screw rotatably connected between the two end plates. One side of the lead screw passes through one of the end plates and is fixedly connected to an adjusting handwheel. An extension plate is movably connected to the bottom of the base, and a connecting block is fixedly connected to one side of the extension plate. An adsorption block is movably connected to the side of the connecting block opposite to the extension plate. A mounting base is movably connected inside the base, and the center of the mounting base is threadedly connected to the lead screw. A shaft is fixedly connected to the mounting base, and a first adjusting arm is shafted onto the shaft. A second adjusting arm is shafted to the end of the first adjusting arm away from the shaft. A dial indicator is provided at the end of the second adjusting arm away from the first adjusting arm, and the dial indicator is shafted to one end of the second adjusting arm through a first rotating block.

[0007] As a further preferred embodiment of this utility model, a guide rail is fixedly connected to the base located between the two end plates, and a slider is slidably connected to the guide rail. The bottom of the mounting base is fixedly connected to the slider, thereby realizing that by adjusting the handwheel to rotate the lead screw, the lead screw rotates in the screw hole at the center position of the mounting base, which causes the mounting base to drive the shaft to move horizontally. This, in conjunction with the first adjusting arm, the second adjusting arm, and the first rotating block, allows the dial indicator to move horizontally for adjustment.

[0008] As a further preferred embodiment of this utility model, a sliding groove is provided at the bottom of the base. The longitudinal section of the sliding groove is T-shaped. A first fixing bolt is threadedly connected to the base near the guide rail. The bottom of the first fixing bolt extends into the sliding groove. After the extension plate moves in the sliding groove, the bottom of the first fixing bolt can be made to abut against the extension plate by rotating the first fixing bolt downward, thereby limiting and fixing the extension plate.

[0009] As a further preferred embodiment of this utility model, the longitudinal section of the extension plate is the same as the longitudinal section of the slide groove, and the extension plate is inserted into the slide groove. A second rotating block is fixedly connected to the side of the connecting block opposite to the extension plate. The cross-section of the second rotating block is T-shaped to realize the rotational connection between the adsorption block and the connecting block, thereby facilitating the level calibration when the adsorption block is adsorbed onto one end face of the generator. The outer surface of the second rotating block is coated with a rubber layer, which can improve the rotational damping of the second rotating block, thereby facilitating the stability of the level adjustment of the extension plate.

[0010] As a further preferred embodiment of this utility model, the adsorption block is provided with a rotating groove, and a second fixing bolt is threadedly connected to the adsorption block located above the rotating groove. The adsorption block is rotatably connected to the second rotating block through the rotating groove. After the extension plate is adjusted to be level by rotating the second rotating block on one side of the connecting block on the adsorption block side, one end of the second fixing bolt can be brought into contact with the outside of the second rotating block, thereby realizing the mutual positioning of the connecting block and the adsorption block.

[0011] As a further preferred embodiment of this utility model, a magnetic block is fixedly connected to the side of the adsorption block opposite to the connecting block to realize the adsorption function of the adsorption block.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] In this invention, the device is fixed to the side of the generator near the main shaft by magnetic adsorption or placed directly on the ground near the generator. It can be tested while the generator is in use without disassembly. The measured swing data can reflect the influence of actual working conditions such as electromagnetic force and mechanical stress. This, combined with the subsequent spindle swing test after disassembly, improves the accuracy of the spindle test and avoids misjudgment due to data deviation. In addition, the device has a moderate size and compact structure, making it easy to carry to different working scenarios. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0015] Figure 2 This is a bottom view of the base of this utility model;

[0016] Figure 3 This is a cross-sectional view of the extension plate, connecting block, and adsorption block of this utility model.

[0017] In the diagram: 1. Base; 2. End plate; 3. Lead screw; 4. Adjusting handwheel; 5. Extension plate; 6. Connecting block; 7. Adsorption block; 8. Mounting base; 9. Shaft platform; 10. First adjusting arm; 11. Second adjusting arm; 12. First rotating block; 13. Dial indicator; 14. Guide rail; 15. Slider; 16. First fixing bolt; 17. Slide groove; 18. Second rotating block; 19. Rotary groove; 20. Second fixing bolt; 21. Magnetic block. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0019] like Figures 1-3 As shown, the present invention provides a portable generator sway testing device, comprising a base 1, end plates 2 fixedly connected to both sides of the base 1, and a lead screw 3 rotatably connected between the two end plates 2. One side of the lead screw 3 passes through one of the end plates 2 and is fixedly connected to an adjusting handwheel 4. An extension plate 5 is movably connected to the bottom of the base 1, a connecting block 6 is fixedly connected to one side of the extension plate 5, and an adsorption block 7 is movably connected to the side of the connecting block 6 opposite to the extension plate 5. A mounting base 8 is movably connected inside the base 1, and the center position of the mounting base 8 is threadedly connected to the lead screw 3. A shaft platform 9 is fixedly connected to the mounting base 8, and a first adjusting arm 10 is axially connected to the shaft platform 9. A second adjusting arm 11 is axially connected to the end of the first adjusting arm 10 away from the shaft platform 9. A dial indicator 13 is provided at the end of the second adjusting arm 11 away from the first adjusting arm 10, and the dial indicator 13 is axially connected to one end of the second adjusting arm 11 through a first rotating block 12.

[0020] like Figure 1 As shown, a guide rail 14 is fixedly connected to the base 1 located between the two end plates 2. A slider 15 is slidably connected to the guide rail 14, and the bottom of the mounting base 8 is fixedly connected to the slider 15. This allows the screw 3 to be rotated by adjusting the handwheel 4, so that the screw 3 rotates in the screw hole at the center of the mounting base 8, thereby causing the mounting base 8 to drive the shaft platform 9 to move horizontally. This, in turn, cooperates with the first adjusting arm 10, the second adjusting arm 11 and the first rotating block 12 to make the dial indicator 13 move horizontally for adjustment.

[0021] like Figures 2-3 As shown, a groove 17 is provided at the bottom of the base 1. The longitudinal section of the groove 17 is T-shaped. A first fixing bolt 16 is threadedly connected to the base 1 near the guide rail 14, and the bottom of the first fixing bolt 16 extends into the groove 17. After the extension plate 5 moves in the groove 17, the bottom of the first fixing bolt 16 abuts against the extension plate 5 by rotating it downward, thereby limiting and fixing the extension plate 5. The longitudinal section of the extension plate 5 is the same as the longitudinal section of the groove 17, and the extension plate 5 is inserted into the groove 17. A second rotating block 18 is fixedly connected to the side of the connecting block 6 opposite to the extension plate 5. The cross-section of the second rotating block 18 is T-shaped, which is used to realize the rotational connection between the adsorption block 7 and the connecting block 6, thereby facilitating the adsorption block 7. The horizontal alignment is calibrated when adsorbed onto one end face of the generator. The outer surface of the second rotating block 18 is coated with a rubber layer, which can improve the rotation damping of the second rotating block 18, thereby facilitating the stability of the horizontal adjustment of the extension plate 5. The adsorption block 7 has a rotating groove 19. The adsorption block 7 located above the rotating groove 19 is internally threaded with a second fixing bolt 20. The adsorption block 7 is rotatably connected to the second rotating block 18 through the rotating groove 19. After the extension plate 5 adjusts the horizontal alignment by rotating the second rotating block 18 on one side of the connecting block 6 on the side of the adsorption block 7, one end of the second fixing bolt 20 can be pressed against the outside of the second rotating block 18, thereby realizing the mutual limiting of the connecting block 6 and the adsorption block 7. A magnetic block 21 is fixedly connected to the side of the adsorption block 7 opposite to the connecting block 6 to realize the adsorption function of the adsorption block 7.

[0022] It should be noted that this utility model is a portable generator swing testing device. When using it, first determine the test position of the generator main shaft, and then select the fixing method. If the generator casing near the main shaft is a flat structure, the magnetic block 21 on the adsorption block 7 can be directly adsorbed onto the side of the generator near the main shaft. If it is not suitable for adsorption, the entire device can be placed on the ground near the generator and leveled and fixed.

[0023] When fine-tuning of the horizontal distance is still needed after the device is fixed in place, hold the base 1 so that the sliding groove 17 at the bottom of the base 1 slides on the extension plate 5, thereby fine-tuning the distance between the device and the generator. After adjustment, tighten the first fixing bolt 16 on the base 1 so that the bottom of the first fixing bolt 16 abuts against the extension plate 5, thus limiting and fixing the base 1 and the extension plate 5. If the horizontality of the adsorption block 7 is deviated after adsorption, hold the base 1 and rotate it, so that the base 1 drives the extension plate 5 and the connecting block 6 to rotate synchronously. This will cause the second rotating block 18 on one side of the connecting block 6 to rotate in the rotating groove 19, thereby using a spirit level to calibrate the horizontality of the base 1. After adjustment, tighten the second fixing bolt 20 on the adsorption block 7 so that one end of the second fixing bolt 20 abuts against the outside of the second rotating block 18, thereby fixing the relative position of the connecting block 6 and the adsorption block 7. After fixing the device, turn the adjusting handwheel 4. The adjusting handwheel 4 will drive the lead screw 3 to rotate. When the lead screw 3 rotates, it will drive the mounting base 8 to move horizontally along the guide rail 14, thereby driving the generator to rotate horizontally. The shaft platform 9 on the mounting base 8 moves synchronously to initially adjust the horizontal position of the dial indicator 13. Then, the angle and height of the dial indicator 13 are adjusted. The first adjusting arm 10, which is shaft-connected to the shaft platform 9, can rotate around the shaft platform 9. The second adjusting arm 11, which is shaft-connected to the end of the first adjusting arm 10 away from the shaft platform 9, can rotate around the connection. By adjusting the angle of the first adjusting arm 10 and the second adjusting arm 11, the side of the dial indicator 13 can be pressed against the main shaft of the generator. Subsequently, the main shaft of the generator can be manually rotated with the help of tools. If the main shaft rotates radially, the side of the dial indicator 13 will jump accordingly. The dial of the dial indicator 13 will display the maximum and minimum readings within one rotation. The difference between the two is the runout value, which can reflect the runout of the main shaft or flange under the influence of electromagnetic force, mechanical stress, thermal deformation and other actual working conditions when the generator is in operation. If further accurate testing is required later, the test data after the main shaft is disassembled can be combined to comprehensively judge whether the rotor is running stably and whether the axis is aligned, avoiding misjudgment caused by a single static test.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A portable generator runout testing device, comprising: The system includes a base (1), with end plates (2) fixedly connected to both sides of the base (1), and a lead screw (3) rotatably connected between the two end plates (2). One side of the lead screw (3) passes through one of the end plates (2) and is fixedly connected to an adjusting handwheel (4). An extension plate (5) is movably connected to the bottom of the base (1), and a connecting block (6) is fixedly connected to one side of the extension plate (5). An adsorption block (7) is movably connected to the side of the connecting block (6) opposite to the extension plate (5). An installation device is movably connected inside the base (1). The mounting base (8) is threaded to the center of the mounting base (8) and the screw (3). A shaft platform (9) is fixedly connected to the mounting base (8). A first adjusting arm (10) is spun onto the shaft platform (9). A second adjusting arm (11) is spun onto the end of the first adjusting arm (10) away from the shaft platform (9). A dial indicator (13) is provided at the end of the second adjusting arm (11) away from the first adjusting arm (10). The dial indicator (13) is spun onto the end of the second adjusting arm (11) through a first rotating block (12).

2. The portable generator run-out testing device of claim 1, wherein: A guide rail (14) is fixedly connected to the base (1) located between the two end plates (2), and a slider (15) is slidably connected to the guide rail (14), and the bottom of the mounting base (8) is fixedly connected to the slider (15).

3. A portable generator run-out testing device as defined in claim 2, wherein: The base (1) has a groove (17) at the bottom. The longitudinal section of the groove (17) is T-shaped. A first fixing bolt (16) is threadedly connected to the base (1) near the guide rail (14), and the bottom of the first fixing bolt (16) extends into the groove (17).

4. A portable generator run-out testing device as defined in claim 3, wherein: The longitudinal section of the extension plate (5) is the same as the longitudinal section of the slide groove (17), and the extension plate (5) is inserted into the slide groove (17). The connecting block (6) is fixedly connected to a second rotating block (18) on the side opposite to the extension plate (5). The cross-section of the second rotating block (18) is T-shaped, and the outer surface of the second rotating block (18) is coated with a rubber layer.

5. A portable generator run-out testing apparatus as defined in claim 4, wherein: The adsorption block (7) has a rotating groove (19) inside. The adsorption block (7) located above the rotating groove (19) is threaded with a second fixing bolt (20). The adsorption block (7) is rotatably connected to the second rotating block (18) through the rotating groove (19).

6. A portable generator run-out testing apparatus as defined in claim 5, wherein: A magnetic block (21) is fixedly connected to the side of the adsorption block (7) opposite to the connecting block (6).

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