Measuring unit fixture for laser alignment

Abstract

The invention discloses a measuring unit fixing device based on laser alignment, which includes a generator shaft fixing assembly; the generator shaft fixing assembly includes a sleeve and a fixing plate fixed to any pipe opening of the sleeve. Advantages: the sleeve of the generator shaft fixing assembly is slidably sleeved on the end of the generator shaft, which is convenient for screwing and fixing one of the measuring units on the fixing plate of the generator shaft fixing assembly; the other measuring unit is fixed to the end of the high-speed shaft of the gear box through the gear box shaft fixing assembly, that is, one end of the positioning shaft with a taper is placed in the process hole at the center of the end of the high-speed shaft of the gear box, the positioning disc is adsorbed on the end face of the high-speed shaft of the gear box through the positioning magnet, and the measuring unit is screwed and fixed on the fixing disc; the invention is simple to operate, one person rotates the generator shaft and the fixing disc, and the alignment measurement can be performed through two measuring units, and it is not affected by wind force, the labor intensity is low, the accuracy of the laser alignment instrument measurement is guaranteed, and accurate alignment debugging is achieved.

Description

Technical field:

[0001] The invention relates to the technical field of rotational mechanical equipment centering and debugging, and in particular to a measuring unit fixing device based on laser centering. Background technology:

[0002] A wind turbine is an electrical device that converts wind energy into mechanical work, which drives the rotor to rotate and ultimately outputs alternating current. The rotor blades use wind power to drive the generator to rotate and generate electricity through the gearbox and coupling in sequence. If the installed gearbox is not aligned with the center axis of the generator, the wind turbine will produce a variety of hazards during operation, such as accelerated failure of bearings and seals, accelerated wear of couplings, increased vibration values, etc., which will affect the service life of the wind turbine.

[0003] At present, when aligning and debugging the gearbox and the generator, a coupling is first used to connect the generator shaft and the gearbox high-speed shaft, and then the measuring units of the laser alignment instrument are respectively installed on the generator shaft and the gearbox high-speed shaft. According to the use requirements of the laser alignment instrument, the generator shaft and the gearbox high-speed shaft are manually rotated to three different angles at the same time, and the offset angle and distance of the gearbox high-speed shaft and the generator shaft are measured by the laser alignment instrument, so as to achieve alignment and debugging by adjusting the generator anchor bolts; however, in actual operation, when the environmental wind force is strong, the rotor blades drive the gearbox high-speed shaft and the generator shaft to rotate at a fast speed, and it is difficult to manually control the gearbox high-speed shaft and the generator shaft to stay stably at the three required measurement positions, resulting in the inability of the laser alignment instrument to perform accurate measurements, affecting the accuracy of the measurement results, and thus failing to achieve accurate alignment and debugging. At this time, multiple people are required to overcome the wind force to control the stable rotation of the gearbox high-speed shaft and the generator shaft, which is time-consuming and labor-intensive, and increases labor costs. Summary of the invention:

[0004] The object of the present invention is to provide a laser alignment measuring unit fixing device which ensures the measurement accuracy of a laser alignment instrument to meet the requirements of precise alignment and debugging.

[0005] The present invention is implemented by the following technical scheme: Based on the measuring unit fixing device for laser centering, it includes a generator shaft fixing component and a gearbox shaft fixing component; the generator shaft fixing component includes a sleeve and a fixing plate fixed to any pipe mouth of the sleeve, and the fixing plate is provided with a first threaded hole coaxially arranged with the sleeve; the gearbox shaft fixing component includes a positioning shaft, a positioning disc and a fixing disc; a blind hole is provided on one side of the fixing disc, and the blind hole is coaxially arranged with the fixing disc; a second threaded hole coaxially arranged with the blind hole is provided on the other side of the fixing disc; one end of the positioning shaft is slidably placed in the blind hole, and the positioning disc is coaxially slidably sleeved on the positioning shaft; on the disc surface of the fixing disc adjacent to the positioning disc, two or more fixed magnets are evenly arranged and fixed along the circumferential direction of the fixing disc, the disc surface of the positioning disc is frictionally fitted with the fixed magnet, and on the outer disc surface of the positioning disc, four or more positioning magnets are evenly arranged and fixed along the circumferential direction; the other end of the positioning shaft outside the positioning disc is conical.

[0006] Furthermore, a crack is opened axially through the tube wall of the sleeve, the edge of the tube mouth of the sleeve is welded and fixed to the fixing plate, and a crack connected to the crack is opened on the circumferential weld between the sleeve and the fixing plate; connecting ears are symmetrically fixed on the outer wall of the sleeve on both sides of the crack, and the two connecting ears are fixedly connected by bolts.

[0007] Furthermore, the total magnetic force of all the positioning magnets on the positioning disk is greater than the total magnetic force of all the fixed magnets on the fixed disk.

[0008] Furthermore, the magnetic force of each positioning magnet is the same as that of each fixed magnet, and the number of the positioning magnets on the positioning disk is greater than the number of the fixed magnets on the fixed disk.

[0009] The advantages of the present invention are as follows: the sleeve of the generator shaft fixing assembly is slidably mounted on the end of the generator shaft, so that one of the measuring units is conveniently screwed and fixed on the fixing plate of the generator shaft fixing assembly; the other measuring unit is fixed to the end of the high-speed shaft of the gear box through the gear box shaft fixing assembly, that is, one end of the positioning shaft with a taper is placed in the process hole at the center of the end of the high-speed shaft of the gear box, the positioning disk is adsorbed on the end face of the high-speed shaft of the gear box through the positioning magnet, and the measuring unit is screwed and fixed on the fixing disk; the present invention is simple to operate, and one person can rotate the generator shaft and the fixing disk to perform centering measurement through the two measuring units, and it is not affected by wind force, has low labor intensity, ensures the accuracy of the laser centering instrument measurement, and realizes precise centering and debugging. Description of the drawings:

[0010] Figure 1 This is a schematic diagram of the structure of the generator shaft fixing assembly of Example 1.

[0011] Figure 2 This is a schematic diagram of the structure of the gearbox shaft fixing assembly of Example 1.

[0012] Figure 3 This is a schematic diagram of the structure of the positioning disc in Example 1.

[0013] Figure 4 This is a schematic diagram of the structure of the fixed disk in Example 1.

[0014] Figure 5 This is a schematic diagram of the usage status of Example 1.

[0015] Figure 6 This is a schematic diagram of the structure of the generator shaft fixing assembly of Example 2.

[0016] Figure 7 for Figure 6 A-direction view.

[0017] The components in the accompanying drawings are marked as follows: generator shaft fixing assembly 1, sleeve 1.1, crack 1.11, fixing plate 1.2, first threaded hole 1.3, crack 1.4, connecting ear 1.5, annular weld 1.6, gearbox shaft fixing assembly 2, positioning shaft 2.1, positioning disc 2.2, positioning magnet 2.21, fixing disc 2.3, blind hole 2.31, second threaded hole 2.32, fixing magnet 2.33, gearbox 3, gearbox high-speed shaft 3.1, brake 4, generator 5, generator shaft 5.1, measuring unit 6. Specific implementation method:

[0018] Example 1: Figures 1 to 5As shown, a measuring unit fixing device for laser alignment includes a generator shaft fixing component 1 and a gearbox shaft fixing component 2; the generator shaft fixing component 1 includes a sleeve 1.1 and a fixing plate 1.2 fixed to any pipe opening of the sleeve 1.1, and a first threaded hole 1.3 coaxially arranged with the sleeve 1.1 is opened on the fixing plate 1.2. The generator shaft fixing component 1 is used to be installed at the end of the generator shaft 5.1. One of the measuring units 6 of the laser alignment instrument is coaxially screwed to the first threaded hole 1.3 of the fixing plate 1.2 through the connecting rod of the measuring unit 6. According to the size of the generator shaft 5.1, a sleeve 1.1 of corresponding size is used in conjunction, so that the outer diameter of the generator shaft 5.1 and the inner diameter of the sleeve 1.1 are transitionally matched to ensure that the sleeve 1.1 and the generator shaft 5.1 are aligned. In order to fit tightly, avoid relative rotation between the generator shaft 5.1 and the casing 1.1 when rotating, so as to ensure the measurement accuracy; the gearbox shaft fixing assembly 2 includes a positioning shaft 2.1, a positioning disc 2.2 and a fixing disc 2.3; the gearbox shaft fixing assembly 2 is used to be installed on the end of the gearbox high-speed shaft 3.1; a blind hole 2.31 is opened on one side of the fixing disc 2.3, and the blind hole 2.31 is coaxially arranged with the fixing disc 2.3; a second threaded hole 2.32 coaxially arranged with the blind hole 2.31 is opened on the other side of the fixing disc 2.3, and another measuring unit 6 of the laser centering instrument is coaxially screwed on the second threaded hole 2.32 through the connecting rod of the measuring unit 6; one end of the positioning shaft 2.1 is slidably placed in the blind hole 2.31, and the coaxial The sliding sleeve is provided with a positioning disc 2.2; on the disk surface of the fixed disk 2.3 adjacent to the positioning disc 2.2, two fixed magnets 2.33 are evenly arranged and fixed along the circumference of the fixed disk 2.3, the disk surface of the positioning disc 2.2 is frictionally fitted with the fixed magnets 2.33, and on the outer disk surface of the positioning disc 2.2, four positioning magnets 2.21 are evenly arranged and fixed along the circumference, the other end of the positioning shaft 2.1 outside the positioning disc 2.2 is conical, and the positioning shaft 2.1 of the gearbox shaft fixing assembly 2 is installed in coordination with the process hole at the end of the gearbox high-speed shaft 3.1 through the conical tip for positioning; the gearbox shaft fixing assembly 2 is firmly adsorbed on the end surface of the gearbox high-speed shaft 3.1 by the positioning magnet 2.21 on the positioning disc 2.2, and the positioning disc The center hole of 2.2 and the positioning shaft 2.1 are transitionally matched, and the positioning shaft 2.1 is stabilized by the positioning disc 2.2, so that the positioning shaft 2.1 and the gear box high-speed shaft 3.1 always keep the same axis; the magnetic force of each positioning magnet 2.21 and each fixed magnet 2.33 is the same, and the number of positioning magnets 2.21 on the positioning disc 2.2 is greater than the number of fixed magnets 2.33 on the fixed disc 2.3, so that the total magnetic force of all positioning magnets 2.21 on the positioning disc 2.2 is greater than the total magnetic force of all fixed magnets 2.33 on the fixed disc 2.3; therefore, the adsorption force between the positioning disc 2.2 and the end face of the gear box high-speed shaft 3.1 is greater than the adsorption force between the fixed disc 2.3 and the positioning disc 2.2, thereby making the fixed disc 2.3 relative to the positioning disc 2.When the positioning shaft 2.2 rotates around the positioning shaft 2.1, the positioning disc 2.2 ensures that the positioning shaft 2.1 does not deviate, thereby ensuring that the positioning shaft 2.1 and the gearbox high-speed shaft 3.1 always remain coaxial, thereby ensuring measurement accuracy; therefore, according to the use requirements of the laser centering instrument, one person rotates the generator shaft 5.1 and the fixed disc 2.3 to make the two rotate to three different angles at the same time, and the offset angle and distance of the gearbox high-speed shaft 3.1 and the generator shaft 5.1 can be measured by two measuring units 6, so that the centering adjustment can be achieved by adjusting the anchor bolts of the generator 5. The present invention is simple to operate, is not affected by wind force, ensures the accuracy of the laser centering instrument measurement, and achieves precise centering adjustment.

[0019] Instructions for use: When using the laser alignment instrument to align the gearbox high-speed shaft 3.1 and the generator shaft 5.1, first control the brake 4 on the gearbox high-speed shaft 3.1 to make the gearbox high-speed shaft 3.1 in a braking state to avoid the influence of wind; install the generator shaft fixing component 1 on the end of the generator shaft 5.1, that is, coaxially slide the sleeve 1.1 on the generator shaft 5.1, and the sleeve 1.1 and the generator shaft 5.1 are tightly matched, and then one of the measuring units 6 of the laser alignment instrument is coaxially screwed to the first threaded hole 1.3 of the fixing plate 1.2 through the connecting rod of the measuring unit 6; install the gearbox shaft fixing component 2 on the end of the gearbox high-speed shaft 3.1, that is, the positioning shaft 2.1 with a conical The tip is placed in the process hole at the end of the gearbox high-speed shaft 3.1, and the gearbox shaft fixing component 2 is firmly adsorbed on the end face of the gearbox high-speed shaft 3.1 through the positioning magnet 2.21 on the positioning disk 2.2, so that the positioning shaft 2.1 and the gearbox high-speed shaft 3.1 always remain coaxial; then another measuring unit 6 of the laser centering instrument is coaxially screwed on the second threaded hole 2.32 through the connecting rod of the measuring unit 6; one person rotates the generator shaft 5.1 and the fixing disk 2.3 to make the two rotate to three different angles at the same time, so that the offset angle and distance of the gearbox high-speed shaft 3.1 and the generator shaft 5.1 can be measured by the two measuring units 6, so that the centering debugging can be achieved by adjusting the anchor bolts of the generator 5.

[0020] Example 2: Figure 6 and Figure 7As shown, a measuring unit fixing device for laser centering includes a generator shaft fixing component 1 and a gearbox shaft fixing component 2; its overall structure is basically the same as that of Example 1, except that a crack 1.11 is opened through the side wall of the sleeve 1.1 in the axial direction, the edge of the pipe mouth of the sleeve 1.1 is welded and fixed to the fixing plate 1.2, and a crack 1.4 connected to the crack 1.11 is opened on the circumferential weld 1.6 between the sleeve 1.1 and the fixing plate 1.2; connecting ears 1.5 are symmetrically fixed on the outer wall of the sleeve 1.1 on both sides of the crack 1.11, and the two connecting ears 1.5 are fixedly connected by bolts When the generator shaft fixing component 1 is coaxially slidably sleeved on the generator shaft 5.1, the end face of the generator shaft 5.1 is abutted against the fixing plate 1.2, a crack 1.11 and a crack 1.4 are opened on the generator shaft fixing component 1, and two connecting ears 1.5 are connected by bolts, so that the sleeve 1.1 is more tightly fixed on the generator shaft 5.1, and it is also convenient for disassembly. On the basis of the transition fit between the outer diameter of the generator shaft 5.1 and the inner diameter of the sleeve 1.1, it is ensured that the sleeve 1.1, the first threaded hole 1.3 of the fixing plate 1.2 and the generator shaft 5.1 are always on the coaxial line to ensure the accuracy of the measurement.

[0021] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A measuring unit fixture for laser alignment, characterized in that: It comprises a generator shaft fixing assembly and a gearbox shaft fixing assembly; the generator shaft fixing assembly comprises a sleeve and a fixing plate fixed to any pipe opening of the sleeve, the fixing plate being provided with a first threaded hole coaxially arranged with the sleeve; the gearbox shaft fixing assembly comprises a positioning shaft, a positioning disc and a fixing disc; a blind hole is provided on a disc surface on one side of the fixing disc, the blind hole is coaxially arranged with the fixing disc; a second threaded hole is provided on a disc surface on the other side of the fixing disc coaxially arranged with the blind hole; one end of the positioning shaft is slidably placed in the blind hole, and the positioning disc is coaxially slidably sleeved on the positioning shaft; on the disc surface of the fixing disc adjacent to the positioning disc, more than two fixing magnets are evenly arranged and fixed along the circumferential direction of the fixing disc, the disc surface of the positioning disc is frictionally fitted with the fixing magnet, and on the outer disc surface of the positioning disc, more than four positioning magnets are evenly arranged and fixed along the circumferential direction; the other end of the positioning shaft outside the positioning disc is conical; The tube wall of the sleeve is provided with a crack extending through the axial direction, the tube mouth edge of the sleeve is welded and fixed to the fixing plate, and a crack communicating with the crack is provided on the annular weld between the sleeve and the fixing plate; connecting ears are symmetrically fixed on the outer wall of the sleeve on both sides of the crack, and the two connecting ears are fixedly connected by bolts; One of the measuring units of the laser centering instrument is coaxially screwed to the first threaded hole of the fixing plate through the connecting rod of the measuring unit, and the other measuring unit of the laser centering instrument is coaxially screwed to the second threaded hole through the connecting rod of the measuring unit; the positioning shaft is installed by matching the process hole at the end of the high-speed shaft of the gear box through the conical tip for positioning.

2. The measuring unit fixing device based on laser alignment according to claim 1, characterized in that: The total magnetic force of all the positioning magnets on the positioning disk is greater than the total magnetic force of all the fixed magnets on the fixed disk.

3. The measuring unit fixing device based on laser centering according to claim 2 is characterized in that: The magnetic force of each positioning magnet is the same as that of each fixed magnet, and the number of the positioning magnets on the positioning disk is greater than the number of the fixed magnets on the fixed disk.

Images