Turning device

Abstract

The present disclosure relates to a turning device, comprising: a driving device; a test disc connected to the driving device, the outer ring of the test disc being spirally shaped so that the outer diameter of the test disc gradually increases; a test strip circumferentially arranged on the outer ring of the test disc; a detection device arranged on one side of the outer ring of the test disc for measuring first detection data of the distance between the detection device and the test strip, wherein by rotating the test disc, the distance between the detection device and the test strip changes so that the first detection data changes, thereby obtaining a correspondence between the first detection data and the distance between the detection device and the test strip as a standard value; the test strip is further configured to be arranged on a shaft to be tested, the detection device being configured to be arranged on one side of the shaft to measure second detection data of the distance between the detection device and the test strip and compare the second detection data with the standard value to obtain the swing of the shaft; and a plurality of test points are provided on the test strip to ensure that the second detection data corresponds to the position of the shaft. The present disclosure can avoid errors caused by manual operation.

Description

Technical Field

[0001] The present disclosure relates to the technical field of barring gears, and in particular, to a barring gear device. Background Art

[0002] A cranking device is used to align the main axis of a generator set with the unit's rotational centerline. This ensures the main axis of the rotating components of the generator set are aligned with the rotational centerline, preventing significant swing during operation. Large shafting equipment, such as hydroelectric generators, wind turbines, and gas turbines, requires cranking after installation or maintenance to adjust the axis. The quality of the cranking directly impacts the safe and efficient operation of the equipment.

[0003] The traditional cranking method is complicated and requires frequent manual operations. Since generator sets are generally large machines with large mass and inertia, deviations often occur during data recording and processing, resulting in poor cranking quality and, in severe cases, accidents of the unit. Summary of the Invention

[0004] The purpose of the present disclosure is to provide a barring device that can solve the above-mentioned problems.

[0005] In order to achieve the above-mentioned objectives, the present disclosure provides a turning device, comprising: a driving device; a test disk, connected to the driving device to drive the test disk to rotate at a uniform speed, the outer ring of the test disk being spiral-shaped so that the outer diameter of the test disk gradually increases; a test strip, circumferentially arranged on the outer ring of the test disk; a detection device, arranged on one side of the outer ring of the test disk for measuring first detection data of the distance between the detection device and the test strip, by rotating the test disk, the distance between the detection device and the test strip will change so that the first detection data changes, so as to obtain a correspondence between the first detection data and the distance between the detection device and the test strip as a standard value; the test strip is also used to be set on the shaft to be tested, and the detection device is used to be set on one side of the shaft to measure second detection data of the distance between the detection device and the test strip and compare the second detection data with the standard value to obtain the swing of the shaft; a plurality of test points are provided on the test strip so that the second detection data corresponds to the position of the shaft.

[0006] Optionally, the test strip carries a first charge, the detection device carries a second charge of opposite polarity to the first charge, and the first detection data and the second detection data are both induced voltages.

[0007] Optionally, the test strip is made of an electrically conductive but insulating material, and an insulating isolation layer is provided on one side of the test strip for installation.

[0008] Optionally, a plurality of through holes are provided at intervals on the test strip, and the test point is located between two adjacent through holes, and the through hole is larger than the detection end of the detection device.

[0009] Optionally, the detection device includes a detection head, which includes an electrode plate close to the test strip and a support device for mounting the electrode plate, and the electrode plate carries the second charge.

[0010] Optionally, the detection device further includes a mounting arm, the mounting arm is connected to the supporting device, and the mounting arm is constructed as a universal arm to adjust the position of the detection head.

[0011] Optionally, there are multiple detection devices.

[0012] Optionally, the turning device further includes a speed regulating gear set and a connecting shaft, the power input end of the speed regulating gear set is connected to the driving device, the power output end is connected to the connecting shaft, and the other end of the connecting shaft is connected to the test disc.

[0013] Optionally, the speed regulating gear set includes a driving gear connected to the driving device and a driven gear connected to the connecting shaft, the driving gear is meshed with the driven gear, and the diameter of the driving gear is smaller than the diameter of the driven gear.

[0014] Optionally, the barring device further includes a base, and the driving device and the detection device are respectively mounted on the base.

[0015] Through the above technical solution, in the turning device provided by the present invention, the driving device drives the test disk to rotate at a uniform speed, the outer diameter of the test disk gradually increases and a test strip is provided on its outer ring, the detection device is used to measure the first detection data of the distance between the detection device and the test strip and obtain the correspondence between the first detection data and the distance between the detection device and the test strip as a standard value; then the test strip is set on the shaft to be tested, and the detection device is used to measure the second detection data of the distance between the detection device and the test strip, and the second detection data is compared with the standard value to obtain the actual distance between the detection device and the detection strip set on the shaft, thereby obtaining the swing of the shaft, and a number of test points are provided on the test strip to make the second detection data correspond to the position of the shaft, so as to avoid errors in manual operation.

[0016] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0018] Figure 1 is a structural schematic diagram of the barring device disclosed in the present invention;

[0019] Figure 2 yes Figure 1 Middle AA cross-section;

[0020] Figure 3 yes Figure 1 Middle BB cross-section;

[0021] Figure 4 is a schematic structural diagram of the test strip described in the present disclosure;

[0022] Figure 5 is a side view of a test strip according to the present disclosure.

[0023] Description of Reference Numerals

[0024] 1. Base; 2. Driving device; 3. Speed ​​regulating gear set; 31. Driving gear; 32. Driven gear; 4. Test disc; 5. Test strip; 51. Through hole; 52. Test point; 6. Connecting shaft; 7. Detection device; 71. Detection head; 711. Electrode plate; 712. Support device; 72. Mounting arm; 8. Insulation isolation layer. DETAILED DESCRIPTION

[0025] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0026] In this disclosure, unless otherwise indicated, directional terms such as "inner" and "outer" refer to the inside and outside relative to the outline of a component or structure. Furthermore, it should be noted that terms such as "first" and "second" are used to distinguish one element from another and do not imply order or importance. Furthermore, in the description with reference to the accompanying drawings, the same reference numerals in different drawings represent the same element.

[0027] like Figure 1-5As shown, the present disclosure provides a turning device, comprising: a driving device 2; a test disk 4, connected to the driving device 2 to drive the test disk 4 to rotate at a uniform speed, the outer ring of the test disk 4 being spiral-shaped so that the outer diameter of the test disk 4 gradually increases; a test strip 5, circumferentially arranged on the outer ring of the test disk 4; a detection device 7, arranged on one side of the outer ring of the test disk 4 for measuring first detection data of the distance between the detection device 7 and the test strip 5, by rotating the test disk 4, the distance between the detection device 7 and the test strip 5 will change so that the first detection data changes, so as to obtain a correspondence between the first detection data and the distance between the detection device 7 and the test strip 5 as a standard value; the test strip 5 is also used to be set on the shaft to be tested, and the detection device 7 is used to be set on one side of the shaft to measure second detection data of the distance between the detection device 7 and the test strip 5 and compare the second detection data with the standard value to obtain the swing of the shaft; a plurality of test points 52 are provided on the test strip 5 to make the second detection data correspond to the position of the shaft.

[0028] Through the above technical solution, in the turning device provided by the present disclosure, the driving device 2 drives the test disc 4 to rotate at a constant speed, the outer diameter of the test disc 4 gradually increases and a test strip 5 is provided on its outer ring, and the detection device 7 is used to measure the first detection data of the distance between the detection device 7 and the test strip 5. Since the test disc 4 rotates at a constant speed, the distance between the detection device 7 and the test disc 4 will gradually increase or decrease, and the corresponding first detection data will change to obtain the corresponding relationship between the first detection data and the distance between the detection device 7 and the test strip 5 as a standard value; then the test strip 5 is set on the axis to be tested, and the detection device 7 is used to measure the second detection data of the distance between the detection device 7 and the test strip 5, and the second detection data is compared with the standard value to obtain the detection data. The actual distance between the measuring device 7 and the detection strip set on the shaft is measured to obtain the swing of the shaft. Since the outer diameter of the test disk 4 is variable, the first detection data measured is a range. When the detection device 7 tests the shaft, it is ensured that the second detection data tested by the detection device 7 is within the range of the first detection data. The swing is the amplitude of the shaft swing, or the eccentric distance of the center line of the shaft. A number of test points 52 are provided on the test strip 5 to make the second detection data correspond to the position of the shaft. Because the speed of rotation of the shaft is generally not uniform during cranking, if the test point 52 is not set to correspond to the position of the shaft, it cannot be determined which position of the shaft the measured data is, resulting in inaccurate measurement. The cranking device provided by the present invention is used to avoid errors in manual operation.

[0029] As an optional implementation, Figure 1 and Figure 4-5As shown, the test strip 5 carries a first charge, and the detection device 7 carries a second charge of opposite polarity to the first charge, that is, the test strip 5 carries a negative charge, and the detection device 7 carries a positive charge. Before the test, the test strip 5 is charged at a constant voltage for one minute to make it negatively charged. The first detection data and the second detection data are both induced voltages. When the detection device 7 with the second charge approaches the test strip 5 with the first charge, an induced voltage is generated. The test disk 4 is a standard component, and the distance between the detection device 7 and each point on the test disk 4 is measurable. The induced voltage at the corresponding point is obtained to derive the corresponding relationship between the induced voltage and the distance. In other embodiments, the test distance can also be determined by measuring the magnetic force, resistance, etc. between the detection device 7 and the test strip 5.

[0030] Alternatively, as Figure 5 As shown, the test strip 5 is made of a conductive but insulating material, such as polytetrafluoroethylene, polydimethylsiloxane, polyvinyl chloride, etc. The conductive property is to make it carry a first charge, and the insulation is to prevent the charge from being conducted to the shaft and being lost. An insulating isolation layer 8 is provided on one side of the test strip 5 for installation, such as organic glass, to further separate the test strip 5 from the shaft or test disc 4.

[0031] Alternatively, as Figure 4 As shown, the test strip 5 is provided with a plurality of through holes 51 at intervals, and a test point 52 is provided between two adjacent through holes 51. The through hole 51 is larger than the detection end of the detection device 7. The test points 52 are spaced apart so that the interval data can be measured, regardless of whether the shaft rotates at a constant speed. If the data is continuous, the uneven rotation speed of the shaft will prevent the detection data from corresponding to the position of the shaft. The voltage data at the through hole 51 is almost zero, resulting in a fixed data feature. Therefore, the test data includes the angular velocity data of the tested shaft, overcoming the previous problems of uncontrollable angular velocity due to manual or hydraulic cranking, resulting in low cranking accuracy and inaccurate data. In other embodiments, insulating sheets can be provided at intervals on the test strip 5 to separate the test points 52.

[0032] As an optional implementation, Figure 1 As shown, the detection device 7 includes a detection head 71, which includes an electrode plate 711 close to the test strip 5 and a support device 712 for mounting the electrode plate 711. The electrode plate 711 carries a second charge, and the support device 712 is made of an insulating material, such as organic glass, to prevent the second charge on the electrode plate 711 from being conducted elsewhere. The electrode plate 711 can be connected to a positive power supply.

[0033] Optionally, the detection device 7 further includes a mounting arm 72 , which is connected to the support device 712 . The mounting arm 72 is constructed as a universal arm to adjust the position of the detection head 71 . The universal arm can be a metal corrugated hose or a universal joint can be provided on the mounting arm 72 .

[0034] As an optional embodiment, multiple detection devices 7 are provided and can be used for multi-point detection.

[0035] As an optional implementation, Figure 1-2 As shown, the turning device also includes a speed regulating gear set 3 and a connecting shaft 6. The power input end of the speed regulating gear set 3 is connected to the driving device 2, and the power output end is connected to the connecting shaft 6. The other end of the connecting shaft 6 is connected to the test disk 4. The driving device 2 drives the test disk 4 to rotate at a uniform speed through the speed regulating gear set 3. The speed regulating gear set 3 can be used to adjust the rotational speed of the test disk 4.

[0036] Alternatively, as Figure 2 As shown, the speed regulating gear set 3 includes a driving gear 31 connected to the driving device 2 and a driven gear 32 connected to the connecting shaft 6. The driving gear 31 is engaged with the driven gear 32. The diameter of the driving gear 31 is smaller than the diameter of the driven gear 32. That is, the speed regulating gear set 3 is a reduction gear set to control the rotational speed of the test disc 4. Different speed regulating gear sets 3 can be replaced according to different speed requirements to control the rotational speed of the test disc 4 within 20 rpm to make the standard value test more accurate.

[0037] As an optional implementation, Figure 1 As shown, the turning device also includes a base 1, a driving device 2 and a detection device 7 are respectively installed on the base 1, a speed regulating gear set 3 is also installed on the base 1 through a mounting shaft, and a test disc 4 extends out of the base 1, and the turning device is installed in a unified manner for easy transportation.

[0038] In actual use, the test strip 5 is installed on the outer ring of the test disk 4, and the standard value is measured by the detection device 7. Then the test strip 5 is installed on the shaft to be tested, and the second detection data is measured by the detection device 7. The second detection data is compared with the standard value to obtain the actual distance value between the detection device 7 and the test strip 5 on the shaft, and the swing of the shaft is obtained. Several test points 52 are provided on the detection strip to correspond to the position of the shaft and are not affected by the rotation speed of the shaft.

[0039] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0040] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0041] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A turning device, characterized in that: include: Drive device; a test disc connected to the driving device to drive the test disc to rotate at a constant speed, wherein the outer ring of the test disc is spirally shaped so that the outer diameter of the test disc gradually increases; a test strip, circumferentially disposed on the outer ring of the test disc; a detection device disposed on one side of the outer ring of the test disc and configured to measure first detection data of the distance between the detection device and the test strip, wherein the distance between the detection device and the test strip changes by rotating the test disc, thereby changing the first detection data, and obtaining a corresponding relationship between the first detection data and the distance between the detection device and the test strip as a standard value; The test strip is further configured to be disposed on a shaft to be tested, and the detection device is configured to be disposed on one side of the shaft to measure second detection data of a distance between the detection device and the test strip and compare the second detection data with the standard value to obtain a wobble of the shaft; The test strip is provided with a plurality of test points so that the second detection data corresponds to the position of the axis.

2. The barring device according to claim 1, characterized in that: The test strip carries a first charge, the detection device carries a second charge with a polarity opposite to the first charge, and the first detection data and the second detection data are both induced voltages.

3. The barring device according to claim 2, characterized in that: The test strip is made of an electrically conductive but insulating material, and an insulating isolation layer is provided on one side of the test strip for installation.

4. The barring device according to claim 3, characterized in that: The test strip is provided with a plurality of through holes at intervals, and the space between two adjacent through holes is the test point. The through hole is larger than the detection end of the detection device.

5. The barring device according to claim 2, characterized in that: The detection device includes a detection head, which includes an electrode plate close to the test strip and a support device for mounting the electrode plate, and the electrode plate carries the second charge.

6. The barring device according to claim 5, characterized in that: The detection device further includes a mounting arm connected to the supporting device, and the mounting arm is configured as a universal arm to adjust the position of the detection head.

7. The barring device according to claim 1, characterized in that: There are multiple detection devices.

8. The barring device according to claim 1, characterized in that: The turning device further includes a speed regulating gear set and a connecting shaft. The power input end of the speed regulating gear set is connected to the driving device, and the power output end is connected to the connecting shaft. The other end of the connecting shaft is connected to the test disc.

9. The barring device according to claim 8, characterized in that: The speed regulating gear set includes a driving gear connected to the driving device and a driven gear connected to the connecting shaft. The driving gear is meshed with the driven gear, and the diameter of the driving gear is smaller than that of the driven gear.

10. The barring device according to claim 1, characterized in that: The barring device further comprises a base, and the driving device and the detecting device are respectively mounted on the base.

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