A rotor concentricity detection device

Abstract

The application discloses a rotor concentricity detection device and belongs to the rotor measurement field.The detection device comprises a sleeve for being assembled on a rotor shaft body, a keel frame fixedly installed on the sleeve, a measuring rod movably installed at one end of the keel frame, a plurality of dial gauges movably installed on the measuring rod, and an adjusting and clamping mechanism arranged in the sleeve.The detection device is characterized in that the sleeve is sleeved on the rotor shaft body, the inner hexagonal bolt rod is rotated, the adjusting block is moved on the adjusting window, the tile part clamps the rotor shaft body, the keel frame is circumferentially rotated on the rotor shaft body, the stator outer periphery is detected through the dial gauges, the measurement is completed, the adjustable tile part is arranged, the equipment can be adapted to the installation of rotor shaft bodies with different diameters, and the adaptability of the equipment is improved.

Description

Technical Field

[0001] This application relates to the field of rotor measurement technology, specifically a rotor concentricity detection device. Background Technology

[0002] Before the motor rotor is processed and after a period of use, it needs to be tested for concentricity using a concentricity testing device. Usually, a bracket carrying a dial indicator is placed on the rotor shaft. The bracket is rotated so that the dial indicator rotates circumferentially along the outer periphery of the rotor and stator to complete the measurement and determine whether the rotor concentricity is within the specified range. This allows for quick understanding of the situation and maintenance, ensuring stable operation of the rotor and reducing vibration and noise.

[0003] When measuring rotors of different diameters, existing measuring equipment cannot be adjusted in real time according to changes in shaft diameter, resulting in poor equipment adaptability. The only way to measure different rotors is to replace the entire equipment, which is costly.

[0004] Therefore, this application provides a rotor concentricity detection device to solve the above problems. Utility Model Content

[0005] This application provides a rotor concentricity detection device, which aims to solve the problems of poor adjustability of existing measuring equipment mentioned in the background art.

[0006] To achieve the above objectives, this application provides the following technical solution: a rotor concentricity testing device, comprising a sleeve for mounting on a rotor shaft, a frame fixedly mounted on the sleeve, a measuring rod movably mounted at one end of the frame, a plurality of dial indicators movably mounted on the measuring rod, and an adjusting clamping mechanism disposed within the sleeve.

[0007] The adjusting clamping mechanism includes several adjusting brackets arranged in a circular array and fixedly installed on the outer wall of the sleeve. Each adjusting bracket is screwed with a hexagonal socket head cap screw. An adjusting block, penetrating the sleeve, is fixedly installed at the end of the hexagonal socket head cap screw. The sleeve has an adjusting window adapted to the adjusting block. The adjusting block extends through the adjusting window into the sleeve. One end of the adjusting block, inside the sleeve, is provided with a tile-shaped part for fitting rotor shafts of different diameters. The tile-shaped part is rotatably connected to the outer wall of the rotor shaft. In use, the sleeve is fitted onto the rotor shaft, and the hexagonal socket head cap screw is rotated, causing the adjusting block to move on the adjusting window. This clamps the rotor shaft with the tile-shaped part, allowing the frame to rotate circumferentially on the rotor shaft. Measurements are taken by inspecting the outer circumference of the stator using a dial indicator. The adjustable tile-shaped part allows the equipment to accommodate rotor shafts of different diameters, improving its adaptability.

[0008] Preferably, for ease of rotation, the tile portion includes a clamping body movably mounted on the adjusting block. The clamping body is adapted to the curvature of the outer wall surface of the rotor shaft to be measured. The side of the clamping body facing away from the adjusting block is coated with a graphite layer for lubrication, improving the smoothness of the detection.

[0009] Preferably, for ease of installation, the adjusting block is provided with a slot, and a card block that matches the slot is fixedly installed on the outer wall of the clamping body. The card block is inserted into the slot, and a through fixing hole is provided on the card block and the slot. A fastening bolt is screwed into the fixing hole, so that when replacing the clamping body, only the clamping body needs to be disassembled and assembled separately, resulting in low replacement cost and simple operation.

[0010] Preferably, for support, the bottom of the sleeve is provided with a support part, the support part including a cylindrical support seat sleeved on the rotor shaft, a bearing is fixedly installed on the support seat, the sleeve overlaps the bearing and is concentrically arranged with the bearing, and a positioning bolt is threaded through the sleeve and screwed to the inner ring of the bearing, thereby reducing the resistance at the bottom and making the rotation more stable.

[0011] Preferably, for positioning, the bottom of the support base is provided with a positioning part sleeved on the rotor shaft. The positioning part includes two positioning ring plates with an annular design. Several support rods are fixedly installed between the two positioning ring plates. The inner ring diameter of the positioning ring plate is adapted to the diameter of the rotor shaft to be measured. The support base is attached to the positioning ring plate to complete the positioning, which is stable and reliable.

[0012] Preferably, for counterweighting, a counterweight part is provided at the end of the keel frame away from the measuring rod. The counterweight part includes a mounting rod fixedly installed on the keel frame, and a plurality of counterweights with a ring-shaped design are sleeved on the mounting rod to ensure that the two ends of the keel frame are balanced and stable, and to ensure measurement accuracy.

[0013] Preferably, for adjustment, a mounting plate is fixedly installed on the keel frame near one end of the measuring rod. The mounting plate has an adjustment groove. A T-shaped slider is fixedly installed at the end of the measuring rod. The slider is slidably installed in the adjustment groove. The slider is screwed with a locking bolt that passes through the mounting plate to improve the stability of the measuring rod during measurement.

[0014] Preferably, for adjustment, several measuring boxes are slidably mounted on the measuring rod, the dial indicator is fixedly mounted on the measuring box, and a knob is screwed onto the measuring box. One end of the knob extending into the measuring box abuts against the outer wall of the measuring rod. By setting multiple sets of dial indicators, measurement is convenient and quick.

[0015] This testing device involves placing a sleeve on the rotor shaft, rotating the hexagonal bolt rod to move the adjusting block on the adjusting window, thereby clamping the rotor shaft with the tile section and causing the frame to rotate circumferentially on the rotor shaft. The outer circumference of the stator is then measured using a dial indicator. By setting an adjustable tile section, the device can be adapted to the installation of rotor shafts of different diameters, improving the device's adaptability.

[0016] The testing device moves the measuring rod by sliding a slider in the adjustment groove on the mounting plate until the measuring rod is adjusted to a position that matches the stator diameter. Then, the slider is fixed to the mounting plate by locking bolts to improve the stability of the measuring rod during measurement. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the composition structure of a rotor concentricity detection device;

[0018] Figure 2 This is a top view schematic diagram of a rotor concentricity detection device;

[0019] Figure 3 This is a schematic cross-sectional view of a rotor concentricity detection device.

[0020] Figure 4 This is a schematic cross-sectional view of a rotor concentricity detection device.

[0021] Figure 5 This is a schematic cross-sectional view of a rotor concentricity detection device.

[0022] In the picture:

[0023] 1. Sleeve; 2. Frame; 3. Measuring rod; 31. Mounting plate; 32. Adjustment groove; 33. Slider; 34. Locking bolt; 35. Measuring box; 36. Knob; 4. Dial indicator; 5. Adjustment clamping mechanism; 51. Adjustment bracket; 52. Hex socket head cap screw rod; 53. Adjustment block; 531. Slot; 532. Slot; 533. Fixing hole; 534. Fastening bolt; 54. Adjustment window; 55. Tile part; 551. Clamping plate body; 552. Graphite layer; 56. Support part; 561. Support base; 562. Bearing; 563. Positioning bolt; 57. Positioning part; 571. Positioning ring; 572. Support rod; 58. Counterweight part; 581. Mounting rod; 582. Counterweight body. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] Example 1

[0026] This embodiment provides a rotor concentricity detection device, such as... Figure 1-5 As shown, the testing device includes a sleeve 1 for mounting on the rotor shaft, a frame 2 fixedly mounted on the sleeve 1, a measuring rod 3 movably mounted on one end of the frame 2, several dial indicators 4 movably mounted on the measuring rod 3, and an adjusting clamping mechanism 5 disposed within the sleeve 1.

[0027] The adjusting clamping mechanism 5 includes several adjusting brackets 51 arranged in a ring array and fixedly installed on the outer wall of the sleeve 1. An internal hexagon bolt rod 52 is screwed onto the adjusting bracket 51. An adjusting block 53 is fixedly installed at the end of the internal hexagon bolt rod 52, which passes through the sleeve 1. An adjusting window 54 adapted to the adjusting block 53 is opened on the sleeve 1. The adjusting block 53 extends into the sleeve 1 through the adjusting window 54. A tile portion 55 for fitting rotor shafts of different diameters is provided at one end of the adjusting block 53 inside the sleeve 1. The tile portion 55 is rotatably connected to the outer wall surface of the rotor shaft.

[0028] In use, sleeve 1 is placed on the rotor shaft, and the internal hex bolt rod 52 is rotated to drive the adjusting block 53 to move on the adjusting window 54, so that the tile part 55 clamps the rotor shaft, and the keel frame 2 rotates circumferentially on the rotor shaft. The outer circumference of the stator is inspected by dial indicator 4 to complete the measurement.

[0029] Understandably, by setting the adjustable tile section 55, the equipment can be adapted to the installation of rotor shafts of different diameters, thereby improving the adaptability of the equipment.

[0030] Specifically, the tile section 55 includes a clamping body 551 movably mounted on the adjusting block 53. The clamping body 551 is adapted to the curvature of the outer wall surface of the rotor shaft to be measured. The side of the clamping body 551 facing away from the adjusting block 53 is coated with a graphite layer 552 for lubrication.

[0031] In use, when clamping the outer wall of the rotor shaft through the clamping plate 551, in order to improve the smoothness of rotation, a graphite layer 552 can be applied to the inner arc surface of the clamping plate 551 before installation. The self-lubricating properties improve the smoothness of rotation between the clamping plate 551 and the rotor shaft, reduce wear on the rotor shaft, and improve the smoothness of detection.

[0032] More specifically, the adjusting block 53 has a slot 531, and a locking block 532 that matches the slot 531 is fixedly installed on the outer wall of the clamping plate body 551. The locking block 532 is inserted into the slot 531. The locking block 532 and the slot 531 have through fixing holes 533, and fastening bolts 534 are screwed into the fixing holes 533.

[0033] When using the device, to ensure that the measuring clamp 551 is aligned with the curvature of the rotor shaft when installing and measuring rotor shafts of different diameters, the clamp 551 is designed to be detachable. The clamp 551 is inserted into the slot 531 by the clip 532, and then the clamp 551 is installed by fastening bolts 534 through the fixing holes 533. This design allows for easy replacement of the clamp 551 by disassembling and assembling the clamp 551 separately, resulting in low replacement cost and simple operation.

[0034] Furthermore, a support portion 56 is provided at the bottom of the sleeve 1. The support portion 56 includes a cylindrical support seat 561 sleeved on the rotor shaft. A bearing 562 is fixedly installed on the support seat 561. The sleeve 1 overlaps the bearing 562 and is concentrically arranged with the bearing 562. A positioning bolt 563 is provided through the sleeve 1 and screwed to the inner ring of the bearing 562.

[0035] In use, first, the support base 561 is placed on the rotor shaft, and then the sleeve 1 is placed on the rotor shaft. The bottom of the sleeve 1 is aligned with the bearing 562. The sleeve 1 and the bearing 562 are fixed by connecting the positioning bolt 563 to the preset hole on the bearing 562. When the sleeve 1 rotates, the bottom is supported by the bearing 562, which reduces the resistance at the bottom and makes the rotation more stable.

[0036] Furthermore, the bottom of the support base 561 is provided with a positioning part 57 sleeved on the rotor shaft. The positioning part 57 includes two positioning ring pieces 571 with annular design. Several support rods 572 are fixedly installed between the two positioning ring pieces 571. The inner ring diameter of the positioning ring piece 571 is adapted to the rotor shaft diameter to be measured. The support base 561 overlaps on the positioning ring piece 571.

[0037] It should be noted that, as a general-purpose component, the sleeve 1 and support base 561 require the rotor shaft to be concentric with the sleeve 1 and support base 561 for accurate measurement when measuring rotors of different diameters. However, the inner holes of the sleeve 1 and support base 561 are not compatible with various rotor shafts, making alignment inconvenient. Therefore, a positioning ring 571 that matches the diameter of the rotor shaft to be measured can be selected in advance. A simple support rod 572 is made and welded to the positioning ring 571 to form a positioning part 57. Before installing the support base 561, the positioning part 57 is first fitted onto the rotor shaft, and then the support base 561 is installed on the positioning ring 571 for fixation, thus completing the positioning process stably and reliably.

[0038] Among them, a counterweight 58 is provided at one end of the keel frame 2 away from the measuring rod 3. The counterweight 58 includes a mounting rod 581 fixedly installed on the keel frame 2, and a number of counterweights 582 with a ring-shaped design are sleeved on the mounting rod 581.

[0039] During use, add counterweight 582 and insert it into the mounting rod 581 to ensure that both ends of the keel frame 2 are balanced and stable, thus ensuring measurement accuracy.

[0040] Example 2

[0041] A mounting plate 31 is fixedly installed on the keel frame 2 near one end of the measuring rod 3. An adjustment groove 32 is provided on the mounting plate 31. A T-shaped slider 33 is fixedly installed on the end of the measuring rod 3. The slider 33 is slidably installed in the adjustment groove 32. A locking bolt 34 that passes through the mounting plate 31 is screwed onto the slider 33.

[0042] In use, the measuring rod 3 is moved by the slider 33 in the adjustment groove 32 on the mounting plate 31 until the measuring rod 3 is adjusted to a position that matches the stator diameter. Then, the slider 33 is fixed to the mounting plate 31 by the locking bolt 34 to improve the stability of the measuring rod 3 during measurement.

[0043] Furthermore, several measuring boxes 35 are slidably mounted on the measuring rod 3, and the dial indicator 4 is fixedly mounted on the measuring box 35. A knob 36 is screwed onto the measuring box 35, and one end of the knob 36 extending into the measuring box 35 abuts against the outer wall of the measuring rod 3.

[0044] In use, turn knob 36 to adjust the position of dial indicator 4 on measuring rod 3 to match the width of the stator. Measurement can be performed by setting multiple dial indicators 4, which is convenient and quick.

[0045] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and concept of this application, should be included within the scope of protection of this application.

Claims

1. A rotor concentricity testing device, comprising a sleeve (1) for mounting on a rotor shaft, a frame (2) fixedly mounted on the sleeve (1), a measuring rod (3) movably mounted on one end of the frame (2), a plurality of dial indicators (4) movably mounted on the measuring rod (3), and an adjusting clamping mechanism (5) disposed within the sleeve (1), characterized in that: The adjusting clamping mechanism (5) includes several adjusting brackets (51) arranged in a ring array and fixedly installed on the outer wall of the sleeve (1). The adjusting brackets (51) are screwed with hexagonal bolt rods (52). An adjusting block (53) is fixedly installed at the end of the hexagonal bolt rod (52) and passes through the sleeve (1). An adjusting window (54) adapted to the adjusting block (53) is opened on the sleeve (1). The adjusting block (53) extends through the adjusting window (54) into the sleeve (1). A tile part (55) for fitting rotor shafts of different diameters is provided at one end of the adjusting block (53) inside the sleeve (1). The tile part (55) is rotatably connected to the outer wall surface of the rotor shaft.

2. The rotor concentricity detection device according to claim 1, characterized in that: The tile portion (55) includes a clamping body (551) movably mounted on the adjusting block (53), the clamping body (551) being adapted to the curvature of the outer wall surface of the rotor shaft to be measured, and the side of the clamping body (551) facing away from the adjusting block (53) being coated with a graphite layer (552) for lubrication.

3. The rotor concentricity detection device according to claim 2, characterized in that: The adjusting block (53) has a slot (531) and a locking block (532) that matches the slot (531) is fixedly installed on the outer wall of the clamping body (551). The locking block (532) is inserted into the slot (531). The locking block (532) and the slot (531) have a through fixing hole (533) and a fastening bolt (534) is screwed into the fixing hole (533).

4. The rotor concentricity detection device according to claim 1, characterized in that: The bottom of the sleeve (1) is provided with a support part (56), the support part (56) includes a cylindrical support seat (561) sleeved on the rotor shaft, a bearing (562) is fixedly installed on the support seat (561), the sleeve (1) overlaps the bearing (562) and is concentrically arranged with the bearing (562), and a positioning bolt (563) is provided through the sleeve (1) and screwed to the inner ring of the bearing (562).

5. The rotor concentricity detection device according to claim 4, characterized in that: The bottom of the support base (561) is provided with a positioning part (57) sleeved on the rotor shaft. The positioning part (57) includes two positioning ring pieces (571) with annular design. Several support rods (572) are fixedly installed between the two positioning ring pieces (571). The inner ring diameter of the positioning ring piece (571) is adapted to the rotor shaft diameter to be measured. The support base (561) overlaps on the positioning ring piece (571).

6. The rotor concentricity detection device according to claim 1, characterized in that: A counterweight (58) is provided at one end of the keel frame (2) away from the measuring rod (3). The counterweight (58) includes a mounting rod (581) fixedly installed on the keel frame (2). Several counterweights (582) with a ring-shaped design are sleeved on the mounting rod (581).

7. The rotor concentricity detection device according to claim 1, characterized in that: An installation plate (31) is fixedly installed on the keel frame (2) at one end near the measuring rod (3). An adjustment groove (32) is provided on the installation plate (31). A slider (33) in a T-shape is fixedly installed at the end of the measuring rod (3). The slider (33) is slidably installed in the adjustment groove (32). A locking bolt (34) that penetrates the installation plate (31) is screwed onto the slider (33).

8. The rotor concentricity detection device according to claim 7, characterized in that: Several measuring boxes (35) are slidably mounted on the measuring rod (3). The dial indicator (4) is fixedly mounted on the measuring box (35). A knob (36) is screwed onto the measuring box (35). One end of the knob (36) extending into the measuring box (35) abuts against the outer wall of the measuring rod (3).

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