A laser measurement device for generator stator-rotor gap

Abstract

This invention relates to the technical field of stator-rotor clearance measurement, and in particular to a laser measurement device for generator stator-rotor clearance. The device includes a detection base, a laser head, and a laser receiver. Two clamping structures providing rotational force are mounted on the upper side of the detection base. A fixing ring is provided on the upper side of the detection base. A power control structure controlling the vertical and lateral movement of the fixing ring is installed on the detection base. A rotating ring is coaxially inserted into the inner ring of the fixing ring. This invention can stop the rolling of the rollers. The elastic connection between the friction ring and the long rod causes a light-blocking plate to block the laser emitted by the laser head. The laser receiver can only receive the laser fluctuation changes when the rollers are in contact with the stator and rotor. One notched support plate supports the stator and rotor that have just detached, and the other notched support plate contacts the next stator and rotor structure. The rollers will not get stuck in the gaps between stator or rotor structures.

Description

Technical Field

[0001] This invention relates to the technical field of stator-rotor clearance measurement, and in particular to a laser measurement device for generator stator-rotor clearance. Background Technology

[0002] With the rapid growth of generator sets in my country in recent years, competition in the generator set industry has also increased dramatically. This has led to increasingly tight installation precision and maintenance schedules for generator sets. In the production of generator sets, it is usually necessary to measure the gap between the stator and rotor to determine whether the stator-rotor gap is within the standard range.

[0003] Chinese patent CN119468955A discloses a generator stator-rotor gap measuring device, including a base, a qualified stamp fixed to the bottom of the fifth piston, two seventh oil cylinders fixed to the inner top of the first bracket, and an eighth piston slidably connected in each of the two seventh oil cylinders. A laser emitter is fixed to the bottom of one of the eighth pistons, and a laser receiver is fixed to the bottom of the other eighth piston. This generator stator-rotor gap measuring device allows adjustment of two adjusting plates according to the standard gap range of the generator stator and rotor before use. Moving either adjusting plate to the right will push the movable plate and the third piston to the right, causing a non-conforming stamp to move down and be stamped on the stator. If the push plate moves between the two adjusting plates, it indicates that the stator-rotor gap is within the standard range, and a conforming stamp moves down and is stamped on the stator, facilitating automatic marking. However, the aforementioned related technologies have the following drawbacks: To ensure the stability of power generation, the gap difference between the stator and rotor must be the same. The change in the stator's inner diameter and the rotor's outer diameter is detected to determine if the gap between the stator and rotor has changed. The generator stator and rotor are generally composed of multiple separately arranged arc-shaped coils, resulting in spatial gaps between each arc-shaped component. Existing testing equipment typically controls the stator and rotor to rotate relative to the laser equipment separately during testing. The gaps between the stator components and the rotor components affect the testing results of the laser testing equipment. Therefore, a generator stator-rotor gap laser measuring device is proposed. Summary of the Invention

[0004] To reduce the impact of gaps between generator stator components and gaps between rotor components on detection, this invention provides a laser measurement device for generator stator-rotor gap.

[0005] The present invention provides a laser measuring device for generator stator-rotor gap, which adopts the following technical solution: it includes a detection base, a laser head and a laser receiver. Two clamping structures that can provide rotational force are installed on the upper side of the detection base. A fixing ring is provided on the upper side of the detection base. The detection base is equipped with a power control structure that controls the vertical and horizontal movement of the fixing ring.

[0006] A rotating ring is coaxially inserted into the inner ring side of the fixed ring, and a slider is elastically slidably inserted into the inside of the rotating ring. A long rod is fixed to the side of the slider near the clamping structure, and the laser receiver is installed on the side of the rotating ring away from the long rod.

[0007] The outer ring surface of the fixed ring is equipped with a torsion structure that controls the torsion of the rotating ring.

[0008] The long rod is coaxially rotatably connected to a roller at the end away from the slider. The laser head is fixed to the rear end of the long rod. Notched support plates are provided in sliding contact on both sides of the roller. The end of the notched support plate near the slider is fixed to the long rod. A light-blocking plate is provided in contact with the end of the laser head away from the roller. A friction ring is fixed to one end of the light-blocking plate. The friction ring is rotatably sleeved on the outer surface of the roller. The friction ring is elastically torsionally connected to the long rod.

[0009] Optionally, the power control structure includes a longitudinal electric telescopic rod and a vertical electric telescopic rod. One end of the longitudinal electric telescopic rod is fixed to the detection base frame, and an end block is fixed to the telescopic end of the longitudinal electric telescopic rod. One end of the vertical electric telescopic rod is fixed to the outer ring surface of the fixing ring, and the other end of the vertical electric telescopic rod is fixed to the end block.

[0010] Optionally, the torsion structure includes an annular elastic telescopic structure and an end ring. The annular elastic telescopic structure is located on the side of the fixed ring away from the long rod. The annular elastic telescopic structure is located between the end ring and the fixed ring. A vertical limiting telescopic rod is fixed to the outer ring surface of the end ring. The lower end of the vertical limiting telescopic rod is fixed to the detection base frame.

[0011] Optionally, the annular elastic telescopic structure has two parallel rods fixed on the side away from the fixed ring, and the end ring is slidably sleeved on the outer surface of the two parallel rods, with the outer diameter of the parallel rods being larger at the end away from the annular elastic telescopic structure.

[0012] The annular elastic telescopic structure has a misaligned ring coaxially and elastically rotatably sleeved at the end away from the fixed ring. A longitudinally arranged toothed plate is fixed on the upper surface of the misaligned ring. A beveled ring is coaxially sleeved on the outer ring surface of the rotating ring. A bevel gear meshes on the upper side of the beveled ring. The bevel gear shaft is rotatably connected to the outer ring surface of the fixed ring. A spur gear is coaxially fixed on the bevel gear shaft. The toothed plate is tangential to the spur gear.

[0013] Optionally, a push plate is provided on one side of the spur gear, and a bent rod is elastically rotatably connected to the upper surface of the push plate near the spur gear. The other end of the bent rod is fixed to the outer ring surface of the fixed ring, and the connection end between the push plate and the bent rod is located in front of the other end of the push plate.

[0014] A one-way stop bar is provided on the side of the push plate away from the fixed ring. The one-way stop bar is fixed to the bent bar. Multiple elastic baffles are fixed at equal intervals on the upper end of the toothed plate near the spur gear. The gap between two adjacent elastic baffles is greater than the width between the push plates. The maximum distance between the upper end of the toothed plate near the spur gear and the push plate is less than the length of the push plate.

[0015] Optionally, the annular elastic telescopic structure includes an intermediate ring and a friction cone ring. A straight rod is provided between the intermediate ring and the friction cone ring. One end of the straight rod is fixed to the friction cone ring. The intermediate ring is slidably sleeved on the outer surface of the straight rod. The intermediate ring and the friction cone ring are elastically connected. The misaligned ring is elastically rotated and sleeved on the outer surface of the intermediate ring.

[0016] A long plate is fixed to the side of the fixed ring near the friction cone ring, and the friction cone ring is slidably sleeved on the outer surface of the long plate.

[0017] The parallel rod is fixed to the intermediate ring, and the toothed plate is fixed to the upper surface of the intermediate ring.

[0018] Optionally, a pull rope is fixed to the side of the slider near the axis of the rotating ring, and a winding wheel is rotatably installed on the inner ring surface of the rotating ring. The pull rope is wound around the outer surface of the winding wheel. A groove is opened on the inner side of the rotating ring at the slider connection point. The slider slides into the groove and can only slide to the axis of the rotating ring.

[0019] The winding wheel is coaxially fixed with a friction cone wheel at the end away from the long rod, and the friction cone wheel cooperates with the inner ring surface of the friction cone ring.

[0020] Optionally, the rotating ring has two evenly distributed grooves on one end face near the long rod, and a plug is provided on the upper side of the fixed ring, which is slidably inserted into the groove located on the upper side of the rotating ring axis.

[0021] An arc plate is fixed to the side of the insertion rod away from the rotating ring, and the arc plate is elastically connected to the fixed ring.

[0022] A round rod is fixed to the side of the arc plate near the friction cone ring. A fixing ring is slidably sleeved on the outer surface of the round rod. A top rod is coaxially arranged on the side of the round rod near the friction cone ring, and the top rod is fixed to the friction cone ring.

[0023] Optionally, the clamping structure includes a power bidirectional threaded rod and a double rod frame, with the lower ends of both sides of the double rod frame fixed to the detection base frame, and both ends of the power bidirectional threaded rod rotatably connected to the double rod frame.

[0024] The outer surface of the power bidirectional threaded rod is threaded with two lateral displacement structures.

[0025] The lateral shifting structure includes a side plate and two clamping wheels. The upper end of the side plate is threaded onto the outer surface of the power bidirectional threaded rod. The upper end of the side plate is slidably connected to the double rod frame. The clamping wheels are rotatably connected to the side plate.

[0026] Two clamping wheels, rotatably connected to the same side plate, are symmetrically located on the upper and lower sides of the longitudinal electric telescopic rod axis. A power motor is fixed on one side of the side plate, and the output end of the power motor is coaxially fixed with one of the clamping wheels.

[0027] In summary, the present invention has the following beneficial technical effects:

[0028] 1. This invention, by setting up components such as a roller, a notched support plate, a long rod, and a slider, controls the rotation of the stator and rotor. The roller rolls inside the stator or outside the rotor. During rotation, the friction between the roller and the friction ring causes the light-blocking plate to disengage from the laser head, allowing the laser head to pass through the rotating ring and be received by the laser receiver. When the roller moves to a gap between the stator or rotor structures, it stops rolling. The elastic connection between the friction ring and the long rod causes the light-blocking plate to block the laser emitted from the laser head, ensuring that the laser receiver only receives the laser fluctuations when the roller is in contact with the stator and rotor. When the same roller rolls on the inside of the stator and the outside of the rotor, the laser synchronous wave can detect the fluctuation changes in the gap between the stator and the rotor when the same roller detaches from the stator and rotor it has been in contact with. When the same roller detaches from the stator and rotor it has been in contact with, one of the notched support plates contacts and supports the stator and rotor from which the same roller has just detached. Then, as the stator and rotor continue to rotate, the other notched support plate contacts the next stator and rotor structure. This ensures that the same roller will not get stuck in the gap between the stator structure or the gap between the rotor structure during the rotation of the stator and rotor. The same roller can continuously roll between adjacent stator structures or adjacent rotor structures.

[0029] 2. This invention, by setting up components such as a push plate, a one-way stop, and an elastic baffle, allows the spur gear to mesh with the toothed plate as the control roller disengages from the generator's rotor and stator and continues to move away from the generator. After the push plate contacts the elastic baffle, it continuously pushes the push plate to rotate, so that the spur gear can rotate half a turn after disengaging from the toothed plate. When the control roller approaches the generator again, the push plate gradually rotates to contact the one-way stop under the obstruction of the elastic baffle. At this time, the push plate pushes the toothed plate to drive the misalignment ring to rotate relative to it, so that the toothed plate moves away from the spur gear, preventing the spur gear from meshing with the toothed plate as it moves closer to the generator. As the push plate moves, it continuously pushes the elastic baffle to deform elastically, allowing the push plate to move between the toothed plate and the generator. Each time the control roller moves out of the generator, the rotating ring rotates half a turn, allowing the control roller to alternately contact and detect the outer side of the rotor and the inner side of the stator.

[0030] 3. This invention, by setting up components such as a pull rope, a friction cone wheel, and a friction cone ring, ensures that when the same roller and the notched support plate disengage from the stator and rotor, the friction cone wheel contacts the friction cone ring. During the rotation of the rotating ring, the friction cone wheel engages with the friction cone ring and rotates, causing the winding wheel to wind the pull rope. This pulls the slider closer to the axis of the rotating ring, so that the same roller is positioned between the stator and rotor before being inserted between them. After the same roller is inserted between the stator and rotor, the friction cone wheel disengages from the friction cone ring, and the slider, under the elastic connection with the rotating ring, moves away from the axis of the rotating ring, allowing the same roller to contact the outer side of the stator and the inner side of the rotor respectively.

[0031] 4. By setting up grooves, insert rods, round rods, and top rods, the present invention ensures that when the friction cone wheel and the friction cone ring are engaged, the friction cone ring pushes the round rod through the top rod, causing the insert rod to disengage from the groove. After the round rod disengages from the top rod and the friction cone ring moves away from the fixed ring, the insert rod is inserted into the groove under the elastic connection between the arc plate and the fixed ring, ensuring that the rotating ring will not twist or shift during testing. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present invention;

[0033] Figure 2 This is a schematic diagram of the connection between the vertical limiting telescopic rod and the end ring in an embodiment of the present invention;

[0034] Figure 3 This is a schematic diagram of the connection between the spur gear and the bevel gear in an embodiment of the present invention;

[0035] Figure 4 This is a top view schematic diagram of some structures in an embodiment of the present invention;

[0036] Figure 5 This is a schematic diagram of the connection between the power bidirectional threaded rod and the side plate in an embodiment of the present invention;

[0037] Figure 6 This is a schematic diagram of the connection between the misaligned ring and the intermediate ring in an embodiment of the present invention;

[0038] Figure 7 This is a rear view schematic diagram of some structures in an embodiment of the present invention;

[0039] Figure 8 This is a schematic diagram of the connection between the long plate and the fixing ring in an embodiment of the present invention;

[0040] Figure 9 This is a schematic diagram of the connection between the winding wheel and the pull rope in an embodiment of the present invention;

[0041] Figure 10 This is a schematic diagram of the structure connecting the friction ring and the roller in an embodiment of the present invention.

[0042] Attached reference numerals: 1. Detection base frame; 2. Laser head; 3. Laser receiver; 4. Clamping structure; 41. Power bidirectional threaded rod; 42. Double rod frame; 43. Lateral shifting structure; 431. Side plate; 432. Clamping wheel; 433. Power motor; 5. Fixing ring; 6. Power control structure; 61. Longitudinal electric telescopic rod; 62. Vertical electric telescopic rod; 63. End block; 7. Rotary ring; 71. Groove; 72. Insert rod; 73. Arc plate; 74. Round rod; 75. Top rod; 8. Slider; 81. Pull rope; 82. Winding wheel; 83. Slide groove ; 84. Friction cone wheel; 9. Torsion structure; 91. End ring; 92. Annular elastic telescopic structure; 921. Intermediate ring; 922. Friction cone ring; 923. Straight rod; 924. Long plate; 93. Vertical limiting telescopic rod; 94. Parallel rod; 95. Misalignment ring; 96. Toothed plate; 97. Bevel gear; 98. Bevel tooth ring; 99. Spur gear; 910. Push plate; 911. Bent rod; 912. One-way stop rod; 913. Elastic baffle; 10. Long rod; 11. Same roller; 12. Notched support plate; 13. Light blocking plate; 14. Friction ring. Detailed Implementation

[0043] The following is in conjunction with the appendix Figures 1-10 The present invention will be described in further detail below.

[0044] This invention discloses a laser measurement device for the stator-rotor gap of a generator. For example... Figures 1-10 As shown, it includes a detection base 1, a laser head 2, and a laser receiver 3. Two clamping structures 4 that can provide rotational force are installed on the upper side of the detection base 1. A fixing ring 5 is provided on the upper side of the detection base 1. A power control structure 6 is installed on the detection base 1 to control the vertical and horizontal movement of the fixing ring 5. The power control structure 6 can control the forward and backward movement and the up and down movement of the fixing ring 5.

[0045] The power control structure 6 includes a longitudinal electric telescopic rod 61 and a vertical electric telescopic rod 62. One end of the longitudinal electric telescopic rod 61 is fixed to the detection base frame 1, and an end block 63 is fixed to the telescopic end of the longitudinal electric telescopic rod 61. The longitudinal electric telescopic rod 61 can control the end block 63 to move back and forth. One end of the vertical electric telescopic rod 62 is fixed to the outer ring surface of the fixing ring 5, and the other end of the vertical electric telescopic rod 62 is fixed to the end block 63. The vertical electric telescopic rod 62 can control the distance between the fixing ring 5 and the end block 63 by telescopic movement.

[0046] A rotating ring 7 is coaxially rotatably inserted into the inner ring side of the fixed ring 5. A slider 8 is elastically slidably inserted into the inside of the rotating ring 7. A long rod 10 is fixed to the side of the slider 8 near the clamping structure 4. A laser receiver 3 is installed on the side of the rotating ring 7 away from the long rod 10. The movement paths of the laser receiver 3 and the slider 8 intersect perpendicularly with the axis of the rotating ring 7. The laser receiver 3 can record the laser structure emitted by the laser head 2. When the vertical electric telescopic rod 62 extends and retracts, it can control the distance between the rotating ring 7 and the longitudinal electric telescopic rod 61, so that the laser head 2 and the long rod 10 can be inserted between the stator and rotor of the generator with different diameter ranges.

[0047] A torsion structure 9 for controlling the torsion of the rotating ring 7 is installed on the outer ring surface of the fixed ring 5.

[0048] The torsion structure 9 includes an annular elastic telescopic structure 92 and an end ring 91. The annular elastic telescopic structure 92 is located on the side of the fixed ring 5 away from the long rod 10. The annular elastic telescopic structure 92 is located between the end ring 91 and the fixed ring 5. A vertical limiting telescopic rod 93 is fixed on the outer ring surface of the end ring 91. The lower end of the vertical limiting telescopic rod 93 is fixed to the detection base frame 1. The vertical limiting telescopic rod 93 limits the up and down movement of the end ring 91.

[0049] Two parallel rods 94 are fixed on the side of the annular elastic telescopic structure 92 away from the fixed ring 5. The end ring 91 is slidably sleeved on the outer surface of the two parallel rods 94. The outer diameter of the end of the parallel rod 94 away from the annular elastic telescopic structure 92 is larger, and the parallel rod 94 limits the maximum distance between the end ring 91 and the annular elastic telescopic structure 92.

[0050] An annular elastic telescopic structure 92 is coaxially and elastically rotatably sleeved with a misaligned ring 95 at the end away from the fixed ring 5. The elastic connection between the misaligned ring 95 and the annular elastic telescopic structure 92 can be an elastic structure such as a spring. A longitudinally arranged toothed plate 96 is fixed on the upper surface of the misaligned ring 95. A beveled ring 98 is coaxially sleeved on the outer ring surface of the rotating ring 7. A bevel gear 97 is meshed on the upper side of the beveled ring 98. The shaft of the bevel gear 97 is rotatably connected to the outer ring surface of the fixed ring 5. A spur gear 99 is coaxially fixed on the shaft of the bevel gear 97. The toothed plate 96 is tangential to the spur gear 99. The elastic connection between the misaligned ring 95 and the annular elastic telescopic structure 92 has a tendency to make the toothed plate 96 tangential to the spur gear 99. After the spur gear 99 meshes and moves with the toothed plate 96, the rotating ring 7 can be driven to rotate half a turn through the meshing of the bevel gear 97 and the beveled ring 98.

[0051] A push plate 910 is provided on one side of the gear plate 96 for the spur gear 99. A bent rod 911 is elastically rotatably connected to the upper surface of the push plate 910 near the spur gear 99. The bent rod 911 and the push plate 910 are elastically connected by a torsion spring. The bent rod 911 has a tendency to push the push plate 910 away from the bent rod 911 and rotate to the rear. The other end of the bent rod 911 is fixed to the outer ring surface of the fixing ring 5. The connection end between the push plate 910 and the bent rod 911 is located in front of the other end of the push plate 910.

[0052] A one-way stop bar 912 is provided on the side of the push plate 910 away from the fixed ring 5. The one-way stop bar 912 is fixed to the bent bar 911. The one-way stop bar 912 limits the rotation angle of the push plate 910, so that the end of the push plate 910 away from the bent bar 911 can rotate to the maximum lateral position. Multiple equidistant elastic baffles 913 are fixed on the upper end of the toothed plate 96 near the spur gear 99. The gap between two adjacent elastic baffles 913 is greater than the width between the push plates 910. The maximum distance between the upper end of the toothed plate 96 near the spur gear 99 and the push plate 910 is less than the length of the push plate 910. When the fixed ring 5 drives the push plate 910 and the spur gear 99 to move forward through the bent bar 911, the push plate 910 moves forward through the bent bar 911. The rotation of the toothed plate 96 will not push the spur gear 99 away from the fixed ring 5. When the fixed ring 5 moves with the toothed plate 96, it can drive the bevel gear 97 to rotate. When the fixed ring 5 moves closer to the generator, the push plate 910 gradually rotates to contact the one-way stop 912 under the obstruction of the elastic baffle 913. At this time, the push plate 910 pushes the toothed plate 96 to drive the misalignment ring 95 to rotate relative to it, and drives the toothed plate 96 away from the spur gear 99. This prevents the spur gear 99 from meshing with the toothed plate 96 when it moves closer to the generator. As the push plate 910 moves, it continuously pushes the elastic baffle 913 to deform elastically. The push plate 910 continuously misaligns with the elastic baffle 913, so that the push plate 910 can move between the toothed plate 96 and the generator.

[0053] The long rod 10 is coaxially rotatably connected to a roller 11 at the end away from the slider 8. The laser head 2 is fixed to the rear end of the long rod 10. When the roller 11 contacts the rotating stator and rotor, the roller 11 can roll synchronously. Notched support plates 12 are provided on both sides of the roller 11 for sliding contact. The notched support plate 12 is fixed to the long rod 10 at the end near the slider 8. The notched support plate 12 is arc-shaped.

[0054] The annular elastic telescopic structure 92 includes an intermediate ring 921 and a friction cone ring 922. A straight rod 923 is provided between the intermediate ring 921 and the friction cone ring 922. One end of the straight rod 923 is fixed to the friction cone ring 922. The intermediate ring 921 is slidably sleeved on the outer surface of the straight rod 923. The intermediate ring 921 and the friction cone ring 922 are elastically connected. The intermediate ring 921 and the friction cone ring 922 are connected by elastic elements such as springs. The elastic connection between the intermediate ring 921 and the friction cone ring 922 has a tendency to push the intermediate ring 921 and the friction cone ring 922 away from each other. The misaligned ring 95 is elastically rotated and sleeved on the outer surface of the intermediate ring 921.

[0055] A long plate 924 is fixed to the side of the fixed ring 5 near the friction cone ring 922. The friction cone ring 922 is slidably sleeved on the outer surface of the long plate 924. The long plate 924 ensures that the fixed ring 5 can drive the friction cone ring 922 to move upward synchronously during its up-and-down movement, so that the friction cone ring 922, the rotating ring 7, and the fixed ring 5 always remain coaxial.

[0056] Parallel rod 94 is fixed to intermediate ring 921, toothed plate 96 is fixed to the upper surface of intermediate ring 921, and toothed plate 96 is located between intermediate ring 921 and friction cone ring 922.

[0057] Two evenly distributed grooves 71 are provided on one end face of the rotating ring 7 near the long rod 10. A plug rod 72 is provided on the upper side of the fixed ring 5. The plug rod 72 is slidably inserted into the groove 71 located on the upper side of the axis of the rotating ring 7.

[0058] An arc plate 73 is fixed on the side of the insertion rod 72 away from the rotating ring 7. The arc plate 73 is elastically connected to the fixed ring 5. The elastic connection between the arc plate 73 and the fixed ring 5 is connected by an elastic telescopic rod, which has the tendency to pull the insertion rod 72 into the groove 71, so that when the roller 11 is located between the stator and the rotor, the rotating ring 7 will not rotate relative to the fixed ring 5.

[0059] A round rod 74 is fixed to the side of the arc plate 73 near the friction cone ring 922. The fixing ring 5 is slidably sleeved on the outer surface of the round rod 74. A push rod 75 is coaxially arranged on the side of the round rod 74 near the friction cone ring 922. The push rod 75 is fixed to the friction cone ring 922. When the friction cone ring 922 is close to the fixing ring 5, it can drive the push rod 75 to contact the round rod 74.

[0060] A light-blocking plate 13 is disposed at the end of the laser head 2 away from the roller 11. A friction ring 14 is fixed to one end of the light-blocking plate 13. The friction ring 14 is rotatably fitted onto the outer surface of the roller 11. The friction ring 14 is elastically torsionally connected to the long rod 10. The friction ring 14 and the long rod 10 are elastically connected by a spring. The elastic connection between the long rod 10 and the friction ring 14 has a tendency to drive the light-blocking plate 13 to block the laser head 2. The friction between the roller 11 and the friction ring 14 ensures that when the roller 11 rotates, the friction force can drive the friction ring 14 to rotate, so that the light-blocking plate 13 can disengage from blocking the laser head 2. When the roller 11 stops rotating, the elastic connection between the friction ring 14 and the long rod 10 has a tendency to push the light-blocking plate 13 to block the laser head 2.

[0061] When the same roller 11 rotates on the outside of the rotor and the inside of the stator, and when the outside of the rotor and the inside of the stator fluctuate, the same roller 11 can drive the laser head 2 to float relative to the generator axis.

[0062] When the roller 11 disengages from the stator and rotor it has been in contact with, one of the notched support plates 12 contacts and supports the stator and rotor from which the roller 11 has just disengaged. Then, as the stator and rotor continue to rotate, the other notched support plate 12 contacts the next stator and rotor structure, ensuring that the roller 11 will not get stuck in the gap between the stator structure or the gap between the rotor structure during the rotation of the stator and rotor.

[0063] A pull rope 81 is fixed to the side of the slider 8 near the axis of the rotating ring 7. A winding wheel 82 is rotatably installed on the inner ring surface of the rotating ring 7. The pull rope 81 is wound around the outer surface of the winding wheel 82. A groove 83 is opened on the inner side of the rotating ring 7 at the connection point of the slider 8. The slider 8 is slidably inserted into the groove 83. The slider 8 can only slide to the axis of the rotating ring 7. The laser emitted by the laser head 2 can be received by the laser receiver 3 after passing through the groove 83.

[0064] A friction cone wheel 84 is coaxially fixed at the end of the winding wheel 82 away from the long rod 10. The friction cone wheel 84 cooperates with the inner ring surface of the friction cone ring 922. After the friction cone wheel 84 contacts the friction cone ring 922, the spur gear 99 moves to the position of the tooth plate 96 after the fixed ring 5 continues to move. After the slider 8 moves to the middle position of the slide groove 83, the winding wheel 82 can no longer pull the slider 8 through the winding rope 81. When the friction cone wheel 84 continues to rotate with the rotating ring 7, the friction cone wheel 84 moves relative to the friction cone ring 922 in the state of stopping its rotation.

[0065] When the friction cone wheel 84 contacts the friction cone ring 922, the friction cone ring 922 pushes the round rod 74 through the push rod 75, causing the insert rod 72 to disengage from the groove 71, so that the rotating ring 7 can rotate relative to the fixed ring 5.

[0066] The clamping structure 4 includes a power bidirectional threaded rod 41 and a double rod frame 42. The lower ends of both sides of the double rod frame 42 are fixed to the detection base frame 1. Both ends of the power bidirectional threaded rod 41 are rotatably connected to the double rod frame 42. The double rod frame 42 is equipped with a motor that controls the rotation of the power bidirectional threaded rod 41.

[0067] The power bidirectional threaded rod 41 has two lateral displacement structures 43 connected to the threaded sleeve on its outer surface.

[0068] The lateral shifting structure 43 includes a side plate 431 and two clamping wheels 432. The upper end of the side plate 431 is threaded onto the outer surface of the power bidirectional threaded rod 41. The upper end of the side plate 431 is slidably connected to the double rod frame 42. The clamping wheels 432 are rotatably connected to the side plate 431. During the forward and reverse rotation of the power bidirectional threaded rod 41, the two side plates 431 can be driven to move closer or further away from each other. When the side plates 431 on both sides move closer to each other, the clamping wheels 432 connected to them can be driven to move closer to the outside of the stator of the generator or the shaft connected to the rotor.

[0069] Two clamping wheels 432, rotatably connected to the same side plate 431, are symmetrically located on the upper and lower sides of the longitudinal electric telescopic rod 61 axis, ensuring that the generator and the longitudinal electric telescopic rod 61 are coaxial while the clamping wheels 432 on both sides of the generator clamp the stator and rotor. A power motor 433 is fixed on one side of the side plate 431. The output end of the power motor 433 is coaxially fixed with one of the clamping wheels 432. The power motor 433 can control the connected clamping wheel 432 to rotate, which can drive the stator and rotor of the generator to rotate respectively.

[0070] The working principle is as follows: Two clamping structures 4 respectively limit the shafts of the rotor and stator parts of the generator. The power control structure 6 controls the fixed ring 5 to move closer to or away from the generator. When the fixed ring 5 moves closer to the generator, the long rod 10 drives the roller 11 and the notched support plate 12 to be inserted between the stator and the rotor. When the slider 8 is located on the side of the rotating ring 7 away from the power control structure 6, the slider 8, through the elastic connection with the rotating ring 7, drives the long rod 10 and the roller 11 to tend to move closer to the outside of the generator and the inside of the stator. After the rotating ring 7 rotates half a turn, the elastic connection between the slider 8 and the rotating ring 7 tends to push the roller 11 closer to the outside of the motor rotor. During the rotation of the stator and rotor, the roller 11 rolls on the inside of the stator or the outside of the rotor. During the rotation of the roller 11, the friction between it and the friction ring 14 drives the light-blocking plate 13 to break free from the obstruction of the laser head 2, allowing the laser head 2 to pass through the rotating ring 7 and be laser-guided. Receiver 3 receives the laser emitted by laser head 2 when the roller 11 moves to the gap between the stator structure or the gap between the rotor structure. The roller 11 stops rolling, and the elastic connection between the friction ring 14 and the long rod 10 causes the light-blocking plate 13 to block the laser. This ensures that the laser receiver 3 can only receive the laser fluctuation changes when the roller 11 is in contact with the stator and rotor. When the roller 11 rolls on the inside of the stator and the outside of the rotor, the laser fluctuates synchronously when the inside of the stator and the outside of the rotor change. This allows the detection of the fluctuation changes between the gap between the stator and the rotor. When the roller 11 detaches from the stator and rotor it has been in contact with, one of the notched support plates 12 contacts and supports the stator and rotor that the roller 11 has just detached from. Then, as the stator and rotor continue to rotate, the other notched support plate 12 contacts the next stator and rotor structure. During the rotation of the stator and rotor, the roller 11 will not get stuck in the gap between the stator structure or the gap between the rotor structure.

[0071] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A laser measuring device for generator stator-rotor gap, comprising a detection base (1), a laser head (2), and a laser receiver (3), characterized in that: The detection base (1) has two clamping structures (4) that can provide rotational force on its upper side. The detection base (1) has a fixing ring (5) on its upper side. The detection base (1) is equipped with a power control structure (6) that controls the vertical and horizontal movement of the fixing ring (5). The fixed ring (5) has a rotating ring (7) inserted coaxially on the inner ring side. The rotating ring (7) has a sliding block (8) inserted elastically inside. The sliding block (8) has a long rod (10) fixed on the side of the clamping structure (4) close to it. The laser receiver (3) is installed on the side of the rotating ring (7) away from the long rod (10). The outer ring surface of the fixed ring (5) is equipped with a torsion structure (9) that controls the torsion of the rotating ring (7). The long rod (10) is coaxially rotatably connected to a roller (11) at the end away from the slider (8). The laser head (2) is fixed to the rear end of the long rod (10). A notched support plate (12) is provided in sliding contact on both sides of the roller (11). The notched support plate (12) is fixed to the long rod (10) at the end near the slider (8). A light-blocking plate (13) is provided in contact at the end of the laser head (2) away from the roller (11). A friction ring (14) is fixed at one end of the light-blocking plate (13). The friction ring (14) is rotatably sleeved on the outer surface of the roller (11). The friction ring (14) is elastically torsional connected to the long rod (10). The power control structure (6) includes a longitudinal electric telescopic rod (61) and a vertical electric telescopic rod (62). One end of the longitudinal electric telescopic rod (61) is fixed to the detection base frame (1), and an end block (63) is fixed to the telescopic end of the longitudinal electric telescopic rod (61). One end of the vertical electric telescopic rod (62) is fixed to the outer ring surface of the fixing ring (5), and the other end of the vertical electric telescopic rod (62) is fixed to the end block (63). The torsion structure (9) includes an annular elastic telescopic structure (92) and an end ring (91). The annular elastic telescopic structure (92) is located on the side of the fixed ring (5) away from the long rod (10). The annular elastic telescopic structure (92) is located between the end ring (91) and the fixed ring (5). A vertical limiting telescopic rod (93) is fixed on the outer ring surface of the end ring (91). The lower end of the vertical limiting telescopic rod (93) is fixed to the detection base frame (1). The annular elastic telescopic structure (92) has two parallel rods (94) fixed on the side away from the fixed ring (5). The end ring (91) is slidably sleeved on the outer surface of the two parallel rods (94). The outer diameter of the parallel rod (94) away from the annular elastic telescopic structure (92) is larger. The annular elastic telescopic structure (92) is coaxially elastically rotatably sleeved with a misaligned ring (95) at the end away from the fixed ring (5). A longitudinally arranged toothed plate (96) is fixed on the upper surface of the misaligned ring (95). A beveled ring (98) is coaxially sleeved on the outer ring surface of the rotating ring (7). A bevel gear (97) meshes on the upper side of the beveled ring (98). The shaft of the bevel gear (97) is rotatably connected to the outer ring surface of the fixed ring (5). A spur gear (99) is coaxially fixed on the shaft of the bevel gear (97). The toothed plate (96) is tangential to the spur gear (99).

2. The laser measurement device for generator stator-rotor gap according to claim 1, characterized in that: The spur gear (99) is provided with a push plate (910) on one side of the tooth plate (96). A bent rod (911) is elastically rotatably connected to the upper surface of the push plate (910) near the spur gear (99). The other end of the bent rod (911) is fixed to the outer ring surface of the fixing ring (5). The connection end between the push plate (910) and the bent rod (911) is located in front of the other end of the push plate (910). A one-way stop bar (912) is provided on the side of the push plate (910) away from the fixed ring (5). The one-way stop bar (912) is fixed to the bent bar (911). Multiple elastic baffles (913) are fixed at equal intervals on the side of the toothed plate (96) near the spur gear (99). The gap between two adjacent elastic baffles (913) is greater than the width between the push plates (910). The maximum distance between the side of the toothed plate (96) near the spur gear (99) and the push plate (910) is less than the length of the push plate (910).

3. The laser measuring device for generator stator-rotor gap according to claim 2, characterized in that: The annular elastic telescopic structure (92) includes an intermediate ring (921) and a friction cone ring (922). A straight rod (923) is provided between the intermediate ring (921) and the friction cone ring (922). One end of the straight rod (923) is fixed to the friction cone ring (922). The intermediate ring (921) is slidably sleeved on the outer surface of the straight rod (923). The intermediate ring (921) and the friction cone ring (922) are elastically connected. The misaligned ring (95) is elastically rotated and sleeved on the outer surface of the intermediate ring (921). The fixed ring (5) has a long plate (924) fixed on the side near the friction cone ring (922), and the friction cone ring (922) is slidably sleeved on the outer surface of the long plate (924); The parallel rod (94) is fixed to the intermediate ring (921), and the toothed plate (96) is fixed to the upper surface of the intermediate ring (921).

4. The laser measuring device for generator stator-rotor gap according to claim 3, characterized in that: A pull rope (81) is fixed on the side of the slider (8) near the axis of the rotating ring (7). A winding wheel (82) is rotatably installed on the inner ring surface of the rotating ring (7). The pull rope (81) is wound around the outer surface of the winding wheel (82). A groove (83) is provided on the inner side of the rotating ring (7) at the connection point of the slider (8). The slider (8) is slidably inserted into the groove (83). The slider (8) can only slide to the axis of the rotating ring (7). The winding wheel (82) is coaxially fixed with a friction cone wheel (84) at the end away from the long rod (10), and the friction cone wheel (84) cooperates with the inner ring surface of the friction cone ring (922).

5. The laser measuring device for generator stator-rotor gap according to claim 3, characterized in that: The rotating ring (7) has two evenly distributed grooves (71) on one end face near the long rod (10), and a plug rod (72) is provided on the upper side of the fixed ring (5). The plug rod (72) is slidably inserted into the groove (71) located on the upper side of the axis of the rotating ring (7); An arc plate (73) is fixed on the side of the insertion rod (72) away from the rotating ring (7), and the arc plate (73) is elastically connected to the fixing ring (5); A round rod (74) is fixed on the side of the arc plate (73) near the friction cone ring (922). A fixing ring (5) is slidably sleeved on the outer surface of the round rod (74). A top rod (75) is coaxially arranged on the side of the round rod (74) near the friction cone ring (922). The top rod (75) is fixed to the friction cone ring (922).

6. The generator stator-rotor gap laser measuring device according to claim 5, characterized in that: The clamping structure (4) includes a power bidirectional threaded rod (41) and a double rod frame (42). The lower ends of both sides of the double rod frame (42) are fixed to the detection base frame (1), and both ends of the power bidirectional threaded rod (41) are rotatably connected to the double rod frame (42). The outer surface of the power bidirectional threaded rod (41) is threaded with two lateral displacement structures (43). The lateral shifting structure (43) includes a side plate (431) and two clamping wheels (432). The upper end of the side plate (431) is threaded onto the outer surface of the power bidirectional threaded rod (41). The upper end of the side plate (431) is slidably connected to the double rod frame (42). The clamping wheels (432) are rotatably connected to the side plate (431). Two clamping wheels (432) rotatably connected to the same side plate (431) are symmetrically located on the upper and lower sides of the longitudinal electric telescopic rod (61) axis. A power motor (433) is fixed on one side of the side plate (431), and the output end of the power motor (433) is coaxially fixed with one of the clamping wheels (432).

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