Generator stator and rotor gap laser measuring device

Abstract

The invention relates to the technical field of stator and rotor gap measurement, in particular to a generator stator and rotor gap laser measuring device which comprises a detection bottom frame, a laser head and a laser receiver, two clamping structures capable of providing rotating force are installed on the upper side of the detection bottom frame, and a fixing ring is arranged on the upper side of the detection bottom frame. A power control structure for controlling the fixed ring to move vertically and transversely is mounted on the detection bottom frame, and a rotating ring is coaxially and rotationally inserted into the inner ring side of the fixed ring. The device can stop rolling through the same roller, the elastic connection between the friction ring and the long rod drives the light barrier to shield the laser emitted by the laser head, the laser receiver can only receive the laser fluctuation change when the same roller is in contact with the stator and the rotor, and one notch supporting plate supports the stator and the rotor which are just separated from each other. And the other notch supporting plate is in contact with the next stator and rotor structure, and the roller cannot be clamped in a gap between the stator structures or a gap between the rotor structures.

Description

Technical Field

[0001] The invention relates to the technical field of stator-rotor gap measurement, and in particular to a generator stator-rotor gap laser measurement device. Background Art

[0002] With the rapid growth of generator sets in my country in recent years, the competition among generator sets has also increased sharply, which has also led to increasingly tight installation accuracy and maintenance period of generator sets. In the production of generator sets, it is usually necessary to measure the gap between the stator and rotor of the generator to determine whether the stator-rotor gap is within the standard range.

[0003] Chinese patent CN119468955A discloses a generator stator-rotor gap measuring device, comprising a base, a qualified seal 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 transmitter fixed to the bottom of one of the eighth pistons, and a laser receiver fixed to the bottom of the other eighth piston. The generator stator-rotor gap measuring device can adjust the positions of the two adjustment plates according to the standard gap range of the generator stator-rotor before using the device. If any adjustment plate moves to the right, the movable plate and the third piston will move to the right. At this time, the unqualified seal moves down and stamps on the stator. If the push plate moves between the two adjustment plates, it means that the gap between the stator and the rotor is within the standard range. The qualified seal moves down and stamps on the stator, which facilitates the automatic marking effect. The above-mentioned related technology has the following defects: in order to ensure the stability of power generation, it is necessary to ensure that the gap difference between the stator and the rotor is the same. By detecting the change in the inner diameter of the stator and the change in the outer diameter of the rotor, it is detected whether the gap between the stator and the rotor changes. The stator and rotor of the generator are generally composed of multiple separately arranged arc coils, which causes a space gap between each arc component. The existing detection equipment generally controls the stator and rotor to rotate relative to the laser equipment separately during detection. The gap between the stator components and the gap between the rotor components will affect the detection results of the laser detection equipment. For this reason, a generator stator-rotor gap laser measurement device is proposed. Summary of the Invention

[0004] In order to reduce the influence of the gaps between the stator components and the rotor components of the generator on detection, the present invention provides a laser measuring device for the gap between the stator and rotor of the generator.

[0005] The present invention provides a generator stator-rotor gap laser measurement device, which adopts the following technical solution: it includes a detection base frame, 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 frame, a fixed ring is provided on the upper side of the detection base frame, and the detection base frame is installed with a power control structure that controls the vertical and lateral movement of the fixed ring.

[0006] A rotating ring is coaxially and rotatably inserted on the inner ring side of the fixed ring. A slider is elastically and slidably inserted inside the rotating ring. A long rod is fixed on one side of the slider close to the clamping structure. The laser receiver is installed on the side of the rotating ring away from the long rod.

[0007] A twisting structure for controlling the twisting of the rotating ring is installed on the outer ring surface of the fixed ring.

[0008] The end of the long rod away from the slider is coaxially and rotatably connected with a same roller. The laser head is fixed to the rear end of the long rod. Gap support plates are slidably contacted on both sides of the same roller. One end of the gap support plate close to the slider is fixed to the long rod. A light blocking plate is contacted with the end of the laser head away from the same roller. A friction ring is fixed to one end of the light blocking plate. The friction ring is frictionally and rotatably sleeved on the outer surface of the same roller. The friction ring is elastically torsionally connected with 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 chassis. 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 fixed ring. The other end of the vertical electric telescopic rod is fixed to the end block.

[0010] Optionally, the twisting 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 limit telescopic rod is fixed to the outer ring surface of the end ring. The lower end of the vertical limit telescopic rod is fixed to the detection chassis.

[0011] Optionally, two parallel rods are fixed to the side of the annular elastic telescopic structure away from the fixed ring. The end ring is slidably sleeved on the outer surfaces of the two parallel rods. The outer diameter of one end of the parallel rod away from the annular elastic telescopic structure is larger.

[0012] A misaligned ring is coaxially and elastically rotatably sleeved on the end of the annular elastic telescopic structure away from the fixed ring. A longitudinally arranged toothed plate is fixed to the upper surface of the misaligned ring. A conical toothed ring is coaxially sleeved on the outer ring surface of the rotating ring. A bevel gear is meshed with the upper side of the conical toothed ring. The shaft rod of the bevel gear is rotatably connected with the outer ring surface of the fixed ring. A spur gear is coaxially fixed to the shaft rod of the bevel gear. The toothed plate is tangentially arranged with the spur gear.

[0013] Optionally, a push plate is arranged on one side of the spur gear and located at the toothed plate. An elastic rotating connection is arranged between the upper surface of one end of the push plate close to the spur gear and a bent rod. The other end of the bent rod is fixed to the outer ring surface of the fixed ring. The connection end of the push plate and the bent rod is located in front of the other end of the push plate.

[0014] On the side of the push plate away from the fixed ring, there is a one-way stop rod, which is fixed to the bent rod. On the side of the upper end of the toothed plate close to the spur gear, there are multiple equally spaced elastic baffles fixed. The gap between two adjacent elastic baffles is greater than the width between the push plates, and the maximum distance between the upper end of the toothed plate close to 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. There is a straight rod between the intermediate ring and the friction cone ring. One end of the straight rod is fixed to the friction cone ring, and the intermediate ring is slidably sleeved on the outer surface of the straight rod. The intermediate ring is elastically connected to the friction cone ring, and the misaligned ring is elastically rotatably sleeved on the outer surface of the intermediate ring.

[0016] On the side of the fixed ring close to the friction cone ring, there is a long plate fixed, 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, on the side of the slider close to the axis of the rotating ring, there is a pull rope fixed. A winding wheel is rotatably installed on the inner ring surface of the rotating ring, and the pull rope is wound around the outer surface of the winding wheel. A chute is provided at the connection of the slider on the inner side of the rotating ring, and the slider is slidably inserted into the chute. The slider can only slide to the axis of the rotating ring.

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

[0020] Optionally, two evenly distributed grooves are provided on the end face of the rotating ring close to the long rod, and a plug rod is provided on the upper side of the fixed ring. The plug rod is slidably inserted into the groove on the upper side of the axis of the rotating ring.

[0021] On the side of the plug rod away from the rotating ring, there is an arc plate fixed, and the arc plate is elastically connected to the fixed ring.

[0022] On the side of the arc plate close to the friction cone ring, there is a round rod fixed, and the fixed ring is slidably sleeved on the outer surface of the round rod. A push rod is coaxially arranged on the side of the round rod close to the friction cone ring, and the push rod is fixed to the friction cone ring.

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

[0024] Two side-shifting structures are threadedly sleeved on the outer surface of the power double-threaded rod.

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

[0026] The two clamping wheels rotatably connected to the same side plate are symmetrically located on the upper and lower sides of the axis of the longitudinal electric telescopic rod. 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 includes the following beneficial technical effects: 1. By providing components such as the same roller, notch support plate, long rod, and slider, during the control of the rotation of the stator and rotor, the same roller rolls inside the stator or outside the rotor. During the rotation of the same roller, the friction force between the same roller and the friction ring drives the light-blocking plate to move away from blocking the laser head, so that the laser head can pass through the rotating ring and be received by the laser receiver. When the same roller moves to the gap between the stator structures or the gap between the rotor structures, the same roller stops rolling, and the elastic connection between the friction ring and the long rod drives the light-blocking plate to block the laser emitted by the laser head, ensuring that the laser receiver can only receive the laser fluctuation changes when the same roller contacts the stator and rotor. When the same roller rolls inside the stator and outside the rotor, the synchronous fluctuation of the laser when the inner side of the stator and the outer side of the rotor change can detect the fluctuation change of the gap between the stator and the rotor. When the same roller disengages from the stator and rotor it contacts, one of the notch support plates contacts and supports the stator and rotor just disengaged from the same roller, and then during the continuous rotation of the stator and rotor, the other notch support plate contacts the next stator and rotor structure, ensuring that during the rotation of the stator and rotor, the same roller will not get stuck in the gap between the stator structures or the gap between the rotor structures, and the same roller can continuously roll between adjacent stator structures or adjacent rotor structures.

[0028] 2. By providing components such as the push plate, one-way stop rod, and elastic baffle, when controlling the same roller to continue moving away from the generator after disengaging from between the rotor and stator of the generator, the spur gear meshes with the toothed plate. After the push plate contacts the elastic baffle, it continuously pushes the push plate to rotate, so that when the spur gear moves away from the toothed plate, it can drive the rotating ring to rotate half a turn. When controlling the same roller to approach the generator again, the push plate gradually rotates to contact the one-way stop rod under the block of the elastic baffle. At this time, the push plate pushes the toothed plate to drive the misaligned ring to rotate relatively, so that the toothed plate moves away from the spur gear, ensuring that the spur gear will not mesh with the toothed plate when moving closer to the generator. During the movement of the push plate, it continuously pushes the elastic baffle to elastically deform, enabling the push plate to move between the toothed plate and the generator. Each time the same roller moves out of the generator once, the rotating ring rotates half a turn, allowing the same roller to alternately contact the outer side of the rotor and the inner side of the stator for detection.

[0029] 3. In the present invention, by providing components such as a pull rope, a friction cone wheel, and a friction cone ring, when the same roller disengages from between the stator and the rotor, the friction cone wheel contacts the friction cone ring. During the rotation of the rotating ring, the friction cone wheel is driven to engage and rotate with the friction cone ring, driving the winding wheel to wind the pull rope, pulling the slider closer to the axis of the rotating ring, so that the same roller is located between the stator and the rotor before inserting between the stator and the rotor. After the same roller inserts between the stator and the rotor, the friction cone wheel and the friction cone ring are disengaged from contact, and the slider moves away from the axis of the rotating ring under the elastic connection with the rotating ring, enabling the same roller to contact the outer side of the stator and the inner side of the rotor respectively.

[0030] 4. In the present invention, by providing parts such as a groove, a plug rod, a round rod, and a top rod, when the friction cone wheel meshes with the friction cone ring, the friction cone ring pushes the round rod through the top rod, causing the plug rod to disengage from the groove. When the friction cone ring moves away from the fixed ring, after the round rod and the top rod are disengaged, the plug rod is inserted into the groove under the elastic connection between the arc plate and the fixed ring, ensuring that the rotating ring does not twist and shift during detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic diagram of the overall structure in an embodiment of the present invention; Figure 2 is a schematic diagram of the structure of the vertical limit telescopic rod connected to the end ring in an embodiment of the present invention; Figure 3 is a schematic diagram of the structure of the spur gear connected to the bevel gear in an embodiment of the present invention; Figure 4 is a schematic top view of a part of the structure in an embodiment of the present invention; Figure 5 is a schematic diagram of the structure of the power bidirectional threaded rod connected to the side plate in an embodiment of the present invention; Figure 6 is a schematic diagram of the structure of the misaligned ring connected to the intermediate ring in an embodiment of the present invention; Figure 7 is a schematic rear view of a part of the structure in an embodiment of the present invention; Figure 8 is a schematic diagram of the structure of the long plate connected to the fixed ring in an embodiment of the present invention; Figure 9 is a schematic diagram of the structure of the winding wheel connected to the pull rope in an embodiment of the present invention; Figure 10 is a schematic diagram of the structure of the friction ring connected to the same roller in an embodiment of the present invention.

[0032] Reference numerals: 1, detection chassis; 2, laser head; 3, laser receiver; 4, clamping structure; 41, power bi-directional threaded rod; 42, double-rod frame; 43, side-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, rotating ring; 71, groove; 72, inserting rod; 73, arc plate; 74, round rod; 75, ejector rod; 8, slider; 81, pulling rope; 82, winding wheel; 83, sliding groove; 84, friction cone wheel; 9, twisting structure; 91, end ring; 92, annular elastic telescopic structure; 921, intermediate ring; 922, friction cone ring; 923, straight rod; 924, long plate; 93, vertical limit telescopic rod; 94, parallel rod; 95, misaligned ring; 96, toothed plate; 97, bevel gear; 98, bevel gear 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, notch support plate; 13, light-blocking plate; 14, friction ring. Detailed implementation mode

[0033] The following is a further detailed description of the present invention in conjunction with the attached Figures 1-10 drawings.

[0034] An embodiment of the present invention discloses a laser measurement device for the clearance between the stator and rotor of a generator. As Figures 1-10 shown, it includes a detection chassis 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 chassis 1. A fixing ring 5 is arranged on the upper side of the detection chassis 1. The detection chassis 1 is equipped with a power control structure 6 for controlling the vertical and horizontal movement of the fixing ring 5. The power control structure 6 can control the front-back movement and up-down movement of the fixing ring 5.

[0035] 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 chassis 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 front-back movement of the end block 63. 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 telescoping.

[0036] A rotating ring 7 is coaxially and rotatably inserted on the inner ring side of a fixed ring 5. A slider 8 is elastically and slidably inserted inside the rotating ring 7. A long rod 10 is fixed on one side of the slider 8 close to 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 moving paths of the laser receiver 3 and the slider 8 are perpendicular to and intersect 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 expands and contracts, 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 generators within different diameter ranges.

[0037] A twisting structure 9 for controlling the twisting of the rotating ring 7 is installed on the outer ring surface of the fixed ring 5.

[0038] The twisting 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 bottom frame 1, and the vertical limiting telescopic rod 93 limits the up and down movement of the end ring 91.

[0039] 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 surfaces of the two parallel rods 94. The outer diameter of one 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.

[0040] A misaligned ring 95 is coaxially and elastically rotatably sleeved at one end of the annular elastic telescopic structure 92 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 bevel gear ring 98 is coaxially sleeved on the outer ring surface of the rotating ring 7. A bevel gear 97 is meshed with the upper side of the bevel gear ring 98. The shaft rod 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 rod of the bevel gear 97. The toothed plate 96 is tangent to the spur gear 99. The elastic connection between the misaligned ring 95 and the annular elastic telescopic structure 92 has the tendency to make the toothed plate 96 tangent to the spur gear 99. After the spur gear 99 and the toothed plate 96 are meshed and move, the rotating ring 7 can be driven to rotate half a turn through the meshing of the bevel gear 97 and the bevel gear ring 98.

[0041] A push plate 910 is arranged on one side of the spur gear 99. An upper surface of one end of the push plate 910 close to the spur gear 99 is elastically and rotatably connected to a bent rod 911. The bent rod 911 and the push plate 910 are elastically connected through a mounting torsion spring, and has the tendency to push the end of the push plate 910 away from the bent rod 911 to rotate backward. The other end of the bent rod 911 is fixed to the outer ring surface of the fixed ring 5. The connection end of the push plate 910 and the bent rod 911 is located in front of the other end of the push plate 910.

[0042] On one side of the push plate 910 away from the fixed ring 5, there is a one-way stop rod 912. The one-way stop rod 912 is fixed to the bent rod 911. The one-way stop rod 912 limits the rotation angle of the push plate 910, so that the end of the push plate 910 away from the bent rod 911 can rotate at most to a horizontal state. On the side of the upper end of the toothed plate 96 close to the spur gear 99, there are a plurality of equally spaced elastic baffles 913 fixed. 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 close to 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 rod 911, the push plate 910 will not push the toothed plate 96 away from the spur gear 99 by rotating relative to the bent rod 911. When the spur gear 99 moves following the fixed ring 5, it can drive the bevel gear 97 to rotate by meshing with the toothed plate 96. When the fixed ring 5 moves close to the generator, the push plate 910 gradually rotates to contact the one-way stop rod 912 under the block of the elastic baffle 913. At this time, the push plate 910 pushes the toothed plate 96 to drive the misaligned ring 95 to rotate relatively, driving the toothed plate 96 away from the spur gear 99, so that the spur gear 99 will not mesh with the toothed plate 96 during the movement close to the generator. During the movement of the push plate 910, it continuously pushes the elastic baffle 913 to elastically deform, and the push plate 910 is continuously misaligned with the elastic baffle 913, so that the push plate 910 can move between the toothed plate 96 and the generator.

[0043] At the end of the long rod 10 away from the slider 8, a same roller 11 is coaxially rotatably connected. The laser head 2 is fixed to the rear end of the long rod 10. When the same roller 11 contacts the rotating stator and rotor, the same roller 11 can roll synchronously. On both sides of the same roller 11, there are notch support plates 12 in sliding contact. The end of the notch support plate 12 close to the slider 8 is fixed to the long rod 10, and the notch support plate 12 is in an arc shape.

[0044] The annular elastic telescopic structure 92 includes an intermediate ring 921 and a friction cone ring 922. Between the intermediate ring 921 and the friction cone ring 922, there is a straight rod 923. 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 is elastically connected to the friction cone ring 922. The intermediate ring 921 and the friction cone ring 922 are connected by elastic members 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 rotatably sleeved on the outer surface of the intermediate ring 921.

[0045] On the side of the fixed ring 5 close to the friction cone ring 922, there is a long plate 924 fixed. The friction cone ring 922 is slidably sleeved on the outer surface of the long plate 924. The long plate 924 ensures that the friction cone ring 922 can be driven to move upward synchronously when the fixed ring 5 moves up and down, so that the friction cone ring 922 always remains coaxial with the rotating ring 7 and the fixed ring 5.

[0046] The parallel rod 94 is fixed to the middle ring 921, and the toothed plate 96 is fixed to the upper surface of the middle ring 921. The toothed plate 96 is located between the middle ring 921 and the friction cone ring 922.

[0047] Two uniformly distributed grooves 71 are formed on one end face of the swivel ring 7 close to the long rod 10. A plug rod 72 is arranged on the upper side of the fixed ring 5, and the plug rod 72 is slidably inserted into the groove 71 located above the axis of the swivel ring 7.

[0048] An arc plate 73 is fixed to the side of the plug rod 72 away from the swivel 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, having a tendency to pull the plug rod 72 into the groove 71, preventing the swivel ring 7 from rotating relative to the fixed ring 5 when the same roller 11 is located between the stator and the rotor.

[0049] A round rod 74 is fixed to one side of the arc plate 73 close to the friction cone ring 922. The fixed 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 close to the friction cone ring 922. The push rod 75 is fixed to the friction cone ring 922. When the friction cone ring 922 approaches the fixed ring 5, it can drive the push rod 75 to contact the round rod 74.

[0050] A light blocking plate 13 is arranged in contact with one end of the laser head 2 away from the same roller 11. A friction ring 14 is fixed to one end of the light blocking plate 13. The friction ring 14 is rotatably sleeved on the outer surface of the same roller 11 by friction. The friction ring 14 is elastically torsionally connected to the long rod 10. The elastic connection between the friction ring 14 and the long rod 10 is 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 frictional force between the same roller 11 and the friction ring 14 ensures that when the same roller 11 rotates, the friction ring 14 can be driven to rotate through the frictional force, so that the light blocking plate 13 is disengaged from blocking the laser head 2. When the same 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.

[0051] When the same roller 11 rotates on the outer side of the rotor and the inner side of the stator, when fluctuations occur on the outer side of the rotor and the inner side of the stator, the same roller 11 can drive the laser head 2 to float relative to the axis of the generator.

[0052] When the same roller 11 disengages from the stator and the rotor it contacts, one of the notch support plates 12 contacts and supports the stator and the rotor from which the same roller 11 has just disengaged. Then, during the continuous rotation of the stator and the rotor, the other notch support plate 12 contacts the next stator and rotor structure, ensuring that during the rotation of the stator and the rotor, the same roller 11 will not get stuck in the gap between the stator structures or the gap between the rotor structures.

[0053] A drawstring 81 is fixed to one side of the slider 8 close to 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 drawstring 81 is wound around the outer surface of the winding wheel 82. A sliding groove 83 is provided on the inner side of the rotating ring 7 at the connection of the slider 8. The slider 8 is slidably inserted into the sliding 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 pass through the sliding groove 83 and then be received by the laser receiver 3.

[0054] One end of the winding wheel 82 far from the long rod 10 is coaxially fixed with a friction cone wheel 84. The friction cone wheel 84 is matched with the inner ring surface of the friction cone ring 922. After the friction cone wheel 84 contacts the friction cone ring 922 and the fixed ring 5 continues to move, the spur gear 99 moves to the position of the toothed plate 96. After the slider 8 moves to the middle position of the sliding groove 83, the winding wheel 82 can no longer pull the slider 8 by winding the drawstring 81. When the friction cone wheel 84 continues to rotate with the rotating ring 7, the friction cone wheel 84 stops rotating and moves relative to the friction cone ring 922.

[0055] When the friction cone wheel 84 contacts the friction cone ring 922, the friction cone ring 922 pushes the round rod 74 through the ejector rod 75, driving the insertion rod 72 to disengage from the groove 71, so that the rotating ring 7 can rotate relative to the fixed ring 5.

[0056] The clamping structure 4 includes a power double-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 double-threaded rod 41 are rotatably connected to the double-rod frame 42. The double-rod frame 42 is equipped with a motor for controlling the rotation of the power double-threaded rod 41.

[0057] Two side-shifting structures 43 are threadedly sleeved on the outer surface of the power double-threaded rod 41.

[0058] The side-shifting structure 43 includes a side plate 431 and two clamping wheels 432. The upper end of the side plate 431 is threadedly sleeved on the outer surface of the power double-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. When the power double-threaded rod 41 rotates forward and backward, it can drive the two side plates 431 to approach or move away from each other respectively. When the two side plates 431 on both sides approach each other, it can drive the connected clamping wheels 432 to approach the outer side of the stator of the generator or the shaft connected to the rotor.

[0059] The two clamping wheels 432 rotatably connected to the same side plate 431 are symmetrically located on the upper and lower sides of the axis of the longitudinal electric telescopic rod 61 respectively, ensuring that when the clamping wheels 432 on both sides of the generator clamp the stator and rotor parts, the generator is coaxial with the longitudinal electric telescopic rod 61. One side of the side plate 431 is fixed with a power motor 433. The output end of the power motor 433 is coaxially fixed to one of the clamping wheels 432. The power motor 433 can control the rotation of the connected clamping wheel 432 and can drive the stator and rotor of the generator to rotate respectively.

[0060] The working principle is as follows: Two clamping structures 4 respectively limit the shaft parts of the rotor part and the stator part of the generator. The power control structure 6 controls the fixed ring 5 to approach or move away from the generator. When controlling the fixed ring 5 to approach the generator, the long rod 10 drives the same roller 11 and the notch support plate 12 to insert between the stator and the rotor. When the slider 8 is located on the side of the axis of the rotating ring 7 away from the power control structure 6, the elastic connection between the slider 8 and the rotating ring 7 drives the long rod 10 and the same roller 11 to have a tendency to approach the outer side of the stator inside the generator. After controlling the rotating ring 7 to rotate half a circle, the elastic connection between the slider 8 and the rotating ring 7 has a tendency to push the same roller 11 to approach the outer side of the motor rotor. During the rotation of the stator and the rotor, the same roller 11 rolls on the inner side of the stator or the outer side of the rotor. During the rotation of the same roller 11, the friction force between the same roller 11 and the friction ring 14 drives the light shielding plate 13 to move away from the shielding of the laser head 2, so that the laser head 2 can pass through the rotating ring 7 and be received by the laser receiver 3. When the same roller 11 moves to the gap between the stator structures or the gap between the rotor structures, the same roller 11 stops rolling, and the elastic connection between the friction ring 14 and the long rod 10 drives the light shielding plate 13 to shield the laser emitted by the laser head 2, ensuring that the laser receiver 3 can only receive the laser fluctuation changes when the same roller 11 contacts the stator and the rotor. When the same roller 11 rolls on the inner side of the stator and the outer side of the rotor, when the inner side of the stator and the outer side of the rotor change, the laser synchronously fluctuates, and the fluctuation changes of the gap between the stator and the rotor can be detected. When the same roller 11 disengages from the stator and the rotor it contacts, one notch support plate 12 contacts and supports the stator and the rotor just disengaged from the same roller 11, and then during the continuous rotation of the stator and the rotor, the other notch support plate 12 contacts the next stator and rotor structure. During the rotation of the stator and the rotor, the same roller 11 will not get stuck in the gap between the stator structures or the gap between the rotor structures.

[0061] The above are all the preferred embodiments of the present invention, and the protection scope of the present invention is not limited hereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A laser measuring device for the clearance between the stator and rotor of a generator, comprising a detection chassis (1), a laser head (2) and a laser receiver (3), characterized in that: On the upper side of the detection chassis (1), two clamping structures (4) capable of providing rotational force are installed. A fixed ring (5) is arranged on the upper side of the detection chassis (1), and a power control structure (6) for controlling the vertical and horizontal movement of the fixed ring (5) is installed on the detection chassis (1); A rotating ring (7) is coaxially rotatably inserted on the inner ring side of the fixed ring (5). A slider (8) is elastically and slidably inserted inside the rotating ring (7). A long rod (10) is fixed on one side of the slider (8) close to the clamping structure (4). The laser receiver (3) is installed on the side of the rotating ring (7) away from the long rod (10); A twisting structure (9) for controlling the twisting of the rotating ring (7) is installed on the outer ring surface of the fixed ring (5); One end of the long rod (10) away from the slider (8) is coaxially rotatably connected to a same roller (11). The laser head (2) is fixed to the rear end of the long rod (10). Notch support plates (12) are arranged in sliding contact on both sides of the same roller (11). One end of the notch support plate (12) close to the slider (8) is fixed to the long rod (10). A light blocking plate (13) is arranged in contact with one end of the laser head (2) away from the same roller (11). A friction ring (14) is fixed to one end of the light blocking plate (13). The friction ring (14) is frictionally rotatably sleeved on the outer surface of the same roller (11), and the friction ring (14) is elastically torsionally connected to the long rod (10).

2. The laser measuring device for the gap between the generator stator and rotor according to claim 1, characterized in that: 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 chassis (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 fixed ring (5), and the other end of the vertical electric telescopic rod (62) is fixed to the end block (63).

3. A laser measuring device for the clearance between the stator and rotor of a generator according to claim 2, characterized in that: The twisting 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 limit telescopic rod (93) is fixed to the outer ring surface of the end ring (91), and the lower end of the vertical limit telescopic rod (93) is fixed to the detection chassis (1).

4. A laser measuring device for the clearance between the stator and rotor of a generator according to claim 3, characterized in that: Two parallel rods (94) are fixed to 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 surfaces of the two parallel rods (94), and the outer diameter of one end of the parallel rod (94) away from the annular elastic telescopic structure (92) is larger; A misaligned ring (95) is coaxially and elastically rotatably sleeved on the end of the annular elastic telescopic structure (92) away from the fixed ring (5). A longitudinally arranged toothed plate (96) is fixed to the upper surface of the misaligned ring (95). A bevel gear ring (98) is coaxially sleeved on the outer ring surface of the rotating ring (7). A bevel gear (97) is meshed with the upper side of the bevel gear 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 to the shaft of the bevel gear (97), and the toothed plate (96) is arranged tangent to the spur gear (99).

5. A laser measuring device for the gap between the stator and rotor of a generator according to claim 4, characterized in that: A push plate (910) is provided on one side of the spur gear (99) facing the toothed plate (96). An upper surface of one end of the push plate (910) close to the spur gear (99) is elastically rotatably connected to a bent rod (911). The other end of the bent rod (911) is fixed to the outer ring surface of the fixed ring (5). The connection end of the push plate (910) and the bent rod (911) is located on the front side of the other end of the push plate (910). A one-way stop rod (912) is provided on the side of the push plate (910) away from the fixed ring (5). The one-way stop rod (912) is fixed to the bent rod (911). A plurality of equally spaced elastic baffles (913) are fixed to one side of the upper end of the toothed plate (96) close to 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) close to the spur gear (99) and the push plate (910) is less than the length of the push plate (910).

6. The laser measurement device for the clearance between the stator and rotor of a generator according to claim 5, 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) is elastically connected to the friction cone ring (922). The misaligned ring (95) is elastically rotatably sleeved on the outer surface of the intermediate ring (921). A long plate (924) is fixed to one side of the fixed ring (5) close to the friction cone ring (922). 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). The toothed plate (96) is fixed to the upper surface of the intermediate ring (921).

7. A laser measuring device for the clearance between the stator and rotor of a generator according to claim 6, characterized in that: A pull rope (81) is fixed to one side of the slider (8) close to 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 chute (83) is provided at the connection of the slider (8) on the inner side of the rotating ring (7). The slider (8) is slidably inserted into the chute (83). The slider (8) can only slide to the axis of the rotating ring (7). A friction cone wheel (84) is coaxially fixed to the end of the winding wheel (82) away from the long rod (10). The friction cone wheel (84) is matched with the inner ring surface of the friction cone ring (922).

8. A laser measuring device for the gap between the stator and rotor of a generator according to claim 6, characterized in that: Two evenly distributed grooves (71) are provided on one end surface of the rotating ring (7) close to the long rod (10). A plug rod (72) is provided above the fixed ring (5). The plug rod (72) is slidably inserted into the groove (71) above the axis of the rotating ring (7). An arc plate (73) is fixed to the side of the plug rod (72) away from the rotating ring (7). The arc plate (73) is elastically connected to the fixed ring (5). A round rod (74) is fixed to one side of the arc plate (73) close to the friction cone ring (92). The fixed ring (5) is slidably sleeved on the outer surface of the round rod (74). A push rod (75) is coaxially provided on the side of the round rod (74) close to the friction cone ring (922). The push rod (75) is fixed to the friction cone ring (922).

9. The laser measuring device for the clearance between the stator and rotor of a generator according to claim 8, characterized in that: The clamping structure (4) includes a power bi-directional threaded rod (41) and a double-rod frame (42). Both lower ends of the double-rod frame (42) are fixed to the detection base frame (1), and both ends of the power bi-directional threaded rod (41) are rotatably connected to the double-rod frame (42); Two side-shifting structures (43) are threadedly sleeved on the outer surface of the power bi-directional threaded rod (41); The side-shifting structure (43) includes a side plate (431) and two clamping wheels (432). The upper end of the side plate (431) is threadedly sleeved on the outer surface of the power bi-directional threaded rod (41), the upper end of the side plate (431) is slidably connected to the double-rod frame (42), and the clamping wheels (432) are rotatably connected to the side plate (431); The two clamping wheels (432) rotatably connected to the same side plate (431) are symmetrically located on the upper and lower sides of the axis of the longitudinal electric telescopic rod (61) respectively. A power motor (433) is fixed to one side of the side plate (431), and the output end of the power motor (433) is coaxially fixed to one of the clamping wheels (432).

Images