A mine-used disc type motor rotor dynamic balance testing equipment

Abstract

The application relates to the technical field of dynamic balance testing, and discloses a mine-used disc motor rotor dynamic balance testing equipment, which comprises a detection table and a rotor body. An annular support seat is fixedly installed at the top center of the detection table. Three groups of annular friction belts are arranged at the bottom of the detection table. An inner support assembly is arranged in each of a left drive belt and a right drive belt. A pulling assembly is arranged between the two inner support assemblies. A rotating driving piece is arranged at the bottom of each inner support assembly. A clamping assembly is arranged on the circumferential surface of the annular support seat. When a motor second driving sprocket rotates, the annular chain is driven to move, thereby driving two sprocket wheels II to rotate, driving the driving wheel to rotate, and driving the inner ring belt and the outer ring belt to move. The rotor body is driven to rotate through the friction between the inner ring belt and the rotating shaft. The three groups of inner ring belts are in close contact with the rotating shaft, and the contact surfaces are arc-shaped, so that the contact surface between the inner ring belt and the rotating shaft is larger, thereby achieving the purpose of stably driving the rotor body to rotate.

Description

Technical Field

[0001] This invention relates to the field of dynamic balancing testing technology, specifically to a dynamic balancing testing device for a mining disc motor rotor. Background Technology

[0002] Mining disc motors are special motors developed to meet the unique requirements of mining operations. Their rotors are disc-shaped, with multiple permanent magnets arrayed on the rotor surface through bonding or embedding. The magnetic poles of these permanent magnets are parallel to the rotor's axis. Due to factors such as misalignment of the permanent magnets, the rotor's mass can become uneven, causing vibration during rotation and affecting the motor's lifespan. Therefore, dynamic balancing tests are necessary for the rotors of mining disc motors.

[0003] Chinese patent CN119354408B, filed on December 23, 2024, discloses a dynamic balancing optimization device for a disc motor rotor, relating to the field of motor rotor dynamic balancing testing technology. It includes a base plate and a rotor body. A testing assembly with a testing belt is mounted on the base plate. A support plate is fixedly mounted on the base plate, and an optimization assembly is installed inside the support plate to improve the accuracy of rotor body test data. A testing frame with a testing instrument is fixedly mounted on the support plate. The testing assembly includes two side plates fixedly mounted on the base plate, and a drive motor is fixedly mounted on the side plates. This invention utilizes the combined use of the testing assembly and the optimization assembly to improve stability and adjustability during the testing process, thereby optimizing the test results when performing dynamic balancing tests on disc motor rotors and effectively improving the efficiency and accuracy of disc motor rotor dynamic balancing tests.

[0004] In this technical solution, a horizontally arranged test belt rubs against the rotor shaft to drive the rotor to rotate, thus testing the rotor's dynamic balance. However, the contact area between the test belt and the rotor is relatively small, making it difficult to ensure stable rotor rotation compared to the heavy rotor of a mining disc motor, thus requiring further improvement. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a dynamic balancing test device for a mining disc motor rotor, which has advantages such as a large contact area between the drive belt and the rotor, enabling stable rotor rotation. This solves the problem that the small contact area between the horizontally arranged test belt and the rotor makes it difficult to ensure stable rotor rotation.

[0007] (II) Technical Solution

[0008] To achieve the goal of a large contact area between the drive belt and the rotor, thus ensuring stable rotor rotation, this invention provides the following technical solution: A dynamic balancing test device for a mining disc motor rotor, comprising a test platform and a rotor body. An annular support is fixedly installed at the center of the top of the test platform, and the rotor body is inserted into the annular support. Three sets of annular friction belts are arranged at the bottom of the test platform, all three sets being sleeved on the outside of the rotor body. One of the annular friction belts is a left drive belt, and the other two are right drive belts. The left drive belt is located between the two right drive belts, adhering to the right half of the rotor body's circumferential surface, and the right drive belts adhering to the left half of the rotor body's circumferential surface. Both the left and right drive belts have internal support components, and a pulling component is arranged between the two internal support components. A rotation drive component is arranged at the bottom of each internal support component. A clamping component is arranged on the circumferential surface of the annular support, clamping the rotor body's circumferential surface.

[0009] Preferably, the rotor body includes a disc-shaped magnetic yoke, with magnetic blocks fixedly arranged on the top of the disc-shaped magnetic yoke, and a rotating shaft fixedly installed at the center of the bottom of the disc-shaped magnetic yoke. The disc-shaped magnetic yoke is attached to the top of the annular support, and the diameter of the rotating shaft is smaller than the inner diameter of the annular support.

[0010] Preferably, the annular friction belt includes an inner ring belt and an outer ring belt, which are integrally formed, and the width of the outer ring belt is greater than the width of the inner ring belt; the inner support assembly includes a drive wheel, which is fitted inside one end of the inner ring belt and the outer ring belt, and two annular frames are provided inside the other end of the outer ring belt. The two annular frames are clamped on the upper and lower sides of the inner ring belt, and the annular frames are sleeved on the outside of the rotating shaft. A connecting shaft is fixedly installed at the center of the drive wheel, and the connecting shaft in the right drive belt passes through and is fixed at the center of the two drive wheels. The annular frames near the drive wheels are fixed by a fixing bracket.

[0011] Preferably, the fixing frame includes an arc-shaped plate, and the annular frame is fixed to the end near the drive wheel by the arc-shaped plate. Two crossbeams are fixedly installed in the middle of the side of the arc-shaped plate near the drive wheel. A fixing column is fixedly installed between the ends of the two crossbeams away from the arc-shaped plate. A bottom support plate is fixedly installed at the bottom of the arc-shaped plate. The connecting shaft is rotatably connected to the crossbeams and the bottom support plate.

[0012] Preferably, the pulling assembly includes a straight-shaped enclosure and an L-shaped enclosure fixedly installed at the bottom of the testing platform. There are two L-shaped enclosures, and the two L-shaped enclosures are located to the left of the straight-shaped enclosure. An X-axis guide rail is formed between the straight-shaped enclosure and the L-shaped enclosure, and a Y-axis guide rail is formed between the two L-shaped enclosures. Two U-shaped carriages are slidably connected in the X-axis guide rail. The two U-shaped carriages are respectively fixedly installed at the bottom of two base plates. Two guide grooves are opened through the surface of the straight-shaped enclosure. Sliding arms are slidably connected through the guide grooves. The two sliding arms are respectively fixedly installed on two fixed columns. A back-off pushing member is provided between the two sliding arms.

[0013] Preferably, the back-off pushing component includes a motor one fixedly installed at the bottom of the testing platform, a drive shaft connected to the top output end of the motor one, a bevel gear one fixedly installed on the surface of the drive shaft, bevel gear two meshing on both the front and rear sides of the bevel gear one, a threaded rod fixedly installed at the center of the bevel gear two, the two threaded rods having opposite thread directions, and the ends of the two sliding arms away from the fixed column being threadedly connected to the two threaded rods respectively.

[0014] Preferably, the rotation drive component includes a slide block slidably connected within the Y-axis guide rail. A second motor is fixedly mounted on the top of the slide block, and a first sprocket is connected to the bottom output end of the second motor. Both connecting shafts are connected to second sprockets at their bottom ends. The first sprocket and the two second sprockets are connected by a ring chain. A support is provided at one end of the Y-axis guide rail near the X-axis guide rail. The support is fixedly mounted on the bottom of the testing platform. A first spring is fixedly installed between the slide block and the support.

[0015] Preferably, the clamping assembly includes a fixed cover fixedly installed on the circumferential surface of the middle part of the annular support. The top of the fixed cover has an array of through grooves. A spiral disk is rotatably connected to the lower half of the circumferential surface of the annular support. A ring gear is fixedly installed at the bottom of the spiral disk. A drive gear meshes with the inner side of the ring gear. The drive gear is fixedly installed on the top of the drive shaft. A slider is slidably connected through the groove. The slider meshes with the top of the spiral disk. A mounting seat is fixedly installed on the top of the slider. A clamping roller is provided at one end of the mounting seat near the disc magnetic yoke. The clamping roller is in contact with the circumferential surface of the disc magnetic yoke.

[0016] Preferably, a vertical bracket is fixedly installed on the top of the mounting base, and a U-shaped horizontal plate is slidably connected to the vertical bracket. The clamping roller is rotatably connected to one end of the U-shaped horizontal plate near the disc magnetic yoke. A second spring is fixedly installed between the U-shaped horizontal plate and the vertical bracket, and the second spring is used to drive the clamping roller away from the vertical bracket.

[0017] Preferably, a carbon rod is fixedly installed at one end of the U-shaped horizontal plate near the clamping roller. The carbon rod is slidably connected to the vertical support. A sliding ring is fixedly installed on the side of the vertical support away from the annular support. The carbon rod slides against the inner wall of the sliding ring. The carbon rod and the sliding ring are electrically connected.

[0018] (III) Beneficial Effects

[0019] Compared with the prior art, the present invention provides a dynamic balancing test device for a disc motor rotor used in mining, which has the following advantages:

[0020] 1. This mining disc motor rotor dynamic balancing testing equipment drives the first sprocket to rotate via the second motor, which in turn drives the annular chain to move, thereby driving the two second sprockets to rotate. Combined with the connecting shaft, this drives the drive wheel to rotate, causing the inner and outer ring belts to move. Through the friction between the inner ring belt and the shaft, the rotor body rotates. All three sets of inner ring belts are in close contact with the shaft, and the contact surface is arc-shaped, resulting in a large contact area between the inner ring belt and the shaft, thus achieving the purpose of stably driving the rotor body to rotate.

[0021] 2. This mining disc motor rotor dynamic balancing testing equipment, during the rotation of the drive shaft, drives bevel gear one to rotate. The meshing of bevel gear one and bevel gear two drives two threaded rods to rotate synchronously, causing two sliding arms to move in opposite directions along the guide groove. Simultaneously, the two fixed frames move in opposite directions, causing the left drive belt to move to the left and the right drive belt to move to the right. This causes the inner ring belt to press against the circumference of the rotating shaft, clamping and limiting the rotating shaft; thus achieving the purpose of clamping and limiting the rotor body.

[0022] 3. In this mining disc motor rotor dynamic balancing testing equipment, if the disc magnetic yoke shakes during rotation, it will squeeze one of the clamping rollers, causing the carbon rod to slide outward. This changes the length of the carbon rod connected to the circuit, and consequently, the circuit resistance. Therefore, by monitoring the circuit resistance, it is possible to monitor whether the rotor body shakes during rotation, making the dynamic balance monitoring results of the rotor body more intuitive. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural schematic diagram of a dynamic balancing test device for a disc motor rotor used in mining, as proposed in this invention.

[0024] Figure 2 This is a three-dimensional structural diagram of the rotor body and the annular support of a dynamic balancing test device for a mining disc motor proposed in this invention, in the state of separation.

[0025] Figure 3 This is a schematic diagram of the upward structure of the testing platform of a dynamic balancing test device for a mining disc motor rotor proposed in this invention.

[0026] Figure 4 This is a three-dimensional structural diagram of the rotor body and annular friction belt of a dynamic balancing test device for a mining disc motor proposed in this invention.

[0027] Figure 5 This is a three-dimensional structural diagram of the annular friction belt and inner support assembly of a dynamic balancing test device for a mining disc motor rotor proposed in this invention.

[0028] Figure 6 This is a three-dimensional structural diagram of the pulling component and the rotating drive component of a dynamic balancing test device for a mining disc motor rotor proposed in this invention.

[0029] Figure 7 This is a three-dimensional structural diagram of the pulling component of a dynamic balancing test device for a mining disc motor rotor proposed in this invention;

[0030] Figure 8 This is a three-dimensional structural diagram of the clamping assembly of a dynamic balancing test device for a mining disc motor rotor proposed in this invention.

[0031] Figure 9 This is a bottom view of the clamping assembly of a dynamic balancing test device for a mining disc motor rotor proposed in this invention.

[0032] Figure 10 This is a three-dimensional structural diagram of the carbon rod and sliding ring of a dynamic balancing test device for a mining disc motor rotor proposed in this invention.

[0033] In the diagram: 100, testing table; 200, annular support; 300, rotor body; 400, annular friction belt; 500, inner support assembly; 600, pulling assembly; 700, rotation drive component; 800, clamping assembly;

[0034] 301. Disc-shaped magnetic yoke; 302. Magnetic block; 303. Rotating shaft; 401. Inner ring belt; 402. Outer ring belt; 501. Drive wheel; 502. Connecting shaft; 503. Annular frame; 504. Fixing frame; 5041. Arc-shaped plate; 5042. Crossbeam; 5043. Fixing column; 5044. Base plate;

[0035] 601. Straight panel; 602. L-shaped panel; 603. U-shaped carriage; 604. Guide groove; 605. Sliding arm; 606. Motor 1; 607. Drive shaft; 608. Bevel gear 1; 609. Bevel gear 2; 610. Threaded rod;

[0036] 701. Slide; 702. Motor II; 703. Sprocket I; 704. Sprocket II; 705. Ring Chain; 706. Support; 707. Spring I;

[0037] 801. Fixed cover; 802. Slide groove; 803. Scroll plate; 804. Ring gear; 805. Drive gear; 806. Slider; 807. Mounting base; 808. Vertical bracket; 809. U-shaped horizontal plate; 810. Clamping roller; 811. Spring II; 812. Carbon rod; 813. Sliding ring. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] Please see Figures 1-3 A dynamic balancing test device for a mining disc motor rotor includes a test platform 100 and a rotor body 300. An annular support 200 is fixedly installed at the top center of the test platform 100, and the rotor body 300 is inserted into the annular support 200. Three sets of annular friction belts 400 are provided at the bottom of the test platform 100, and all three sets of annular friction belts 400 are sleeved on the outside of the rotor body 300. One annular friction belt 400 is a left drive belt, and the other two annular friction belts 400 are right drive belts. The left drive belt is located between the two right drive belts. The left drive belt is attached to the right half of the circumferential surface of the rotor body 300, and the right drive belt is attached to the left half of the circumferential surface of the rotor body 300. An inner support assembly 500 is provided inside the left and right drive belts to support the annular friction belts 400, so that the annular friction belts 400 always remain in annular shape.

[0040] A pulling component 600 is provided between the two inner support components 500. The pulling component 600 drives the two inner support components 500 to move in opposite directions, causing the left drive belt to move to the left and the right drive belt to move to the right. Specifically, the left drive belt presses against the rotor body 300 to the left, and the right drive belt presses against the rotor body 300 to the right. The pressures exerted by the left and right drive belts on the rotor body 300 cancel each other out, preventing any impact on the dynamic balance of the rotor body 300. Simultaneously, the rotor body 300 is clamped and limited. The large contact surfaces between the left and right drive belts and the rotor body 300 ensure stable rotation of the rotor body 300. A rotation drive component 700 is provided at the bottom of the inner support component 500, and a clamping component 800 is provided on the circumferential surface of the annular support 200, clamping the rotor body 300 onto the circumferential surface. The clamping assembly 800 elastically limits the rotor body 300 from all sides, and detects the displacement of the rotor body 300 when it shakes during rotation.

[0041] Please see Figure 2 The rotor body 300 includes a disc magnetic yoke 301, with magnetic blocks 302 fixedly arranged on the top of the disc magnetic yoke 301, and a rotating shaft 303 fixedly installed at the center of the bottom of the disc magnetic yoke 301. The disc magnetic yoke 301 is attached to the top of the annular support 200. The outer diameter of the annular support 200 is smaller than the diameter of the disc magnetic yoke 301, and the diameter of the rotating shaft 303 is smaller than the inner diameter of the annular support 200.

[0042] Please see Figures 4-5 The annular friction belt 400 includes an inner ring belt 401 and an outer ring belt 402, which are integrally formed. The width of the outer ring belt 402 is greater than the width of the inner ring belt 401. The inner support assembly 500 includes a drive wheel 501, which fits inside one end of the inner ring belt 401 and the outer ring belt 402. Two annular frames 503 are provided inside the other end of the outer ring belt 402. The two annular frames 503 are clamped on the upper and lower sides of the inner ring belt 401 and are sleeved on the outside of the rotating shaft 303. The inner ring belt 401 and the outer ring belt 402 are tightened by the cooperation of the drive wheel 501 and the annular frames 503. In practice, the inner wall of the outer ring belt 402 and the circumferential surface of the drive wheel 501 are provided with meshing teeth, which are not shown in the figure. When the drive wheel 501 rotates, it drives the inner ring belt 401 and the outer ring belt 402 to move along the surface of the annular frames 503.

[0043] A connecting shaft 502 is fixedly installed at the center of the drive wheel 501. The connecting shaft 502 in the right drive belt passes through and is fixed at the center of the two drive wheels 501. The annular frame 503 is fixed to one end of the drive wheel 501 by a fixing bracket 504. The connecting shaft 502 passes through and is rotatably connected to the fixing bracket 504, thereby keeping the distance between the annular frame 503 and the drive wheel 501 stable.

[0044] The fixed frame 504 includes an arc-shaped plate 5041. The annular frame 503 is fixed to the drive wheel 501 via the arc-shaped plate 5041. Two crossbeams 5042 are fixedly installed in the middle of the side of the arc-shaped plate 5041 closest to the drive wheel 501. A fixed post 5043 is fixedly installed between the ends of the two crossbeams 5042 furthest from the arc-shaped plate 5041. A base plate 5044 is fixedly installed at the bottom of the arc-shaped plate 5041. A connecting shaft 502 rotatably connects the crossbeams 5042 and the base plate 5044. In the left drive belt, the two crossbeams 5042 are clamped between the upper and lower sides of the drive wheel 501; in the right drive belt, the two crossbeams 5042 are respectively attached to the opposite sides of the two drive wheels 501. The arc-shaped plate 5041 is fixed to the four annular frames 503.

[0045] Please see Figures 6-7The pulling assembly 600 includes a straight-shaped partition 601 and an L-shaped partition 602 fixedly installed at the bottom of the testing table 100. There are two L-shaped partitions 602, which are arranged front to back and are located to the left of the straight-shaped partition 601. An X-axis guide rail is formed between the straight-shaped partition 601 and the L-shaped partition 602, and a Y-axis guide rail is formed between the two L-shaped partitions 602.

[0046] Two U-shaped carriages 603 are slidably connected inside the X-axis guide rail. The two U-shaped carriages 603 are fixedly installed on the bottom of the two base plates 5044 respectively. Two guide grooves 604 are opened through the surface of the straight plate 601. Sliding arms 605 are slidably connected through the guide grooves 604. The two sliding arms 605 are fixedly installed on the two fixed columns 5043 respectively. A back-off pushing member is provided between the two sliding arms 605.

[0047] The opposing drive component includes a motor 606 fixedly mounted on the bottom of the testing table 100. A drive shaft 607 is connected to the top output end of the motor 606. A bevel gear 608 is fixedly mounted on the surface of the drive shaft 607. Bevel gears 609 mesh with the front and rear sides of bevel gear 608. A threaded rod 610 is fixedly mounted at the center of bevel gear 609. The threads of the two threaded rods 610 are in opposite directions. The ends of two sliding arms 605 away from the fixed post 5043 are threadedly connected to the two threaded rods 610 respectively. Therefore, when the motor 606 drives the drive shaft 607 to rotate, the transmission action of the bevel gears 608 and 609 drives the two threaded rods 610 to rotate synchronously, thereby causing the two sliding arms 605 to slide along the guide groove 604. This causes the two sets of fixed frames 504 to move in opposite directions, and the left and right drive belts to move in opposite directions, pressing against the rotating shaft 303.

[0048] Please see Figure 6 The rotation drive component 700 includes a slide block 701 slidably connected within the Y-axis guide rail. A second motor 702 is fixedly mounted on the top of the slide block 701. A first sprocket 703 is connected to the bottom output end of the second motor 702. Both connecting shafts 502 have second sprockets 704 connected to their bottom ends. The first sprocket 703 and the two second sprockets 704 are connected by a ring chain 705. A support 706 is provided at the end of the Y-axis guide rail near the X-axis guide rail. The support 706 is fixedly mounted on the bottom of the testing table 100. A first spring 707 is fixedly installed between the slide block 701 and the support 706. The elasticity of the first spring 707 causes the slide block 701 to tend to move to the left, keeping the ring chain 705 taut as the distance between the two fixed brackets 504 changes.

[0049] Please see Figures 8-10The clamping assembly 800 includes a fixed cover 801 fixedly mounted on the central circumferential surface of the annular support 200, forming a circular mounting cavity between the fixed cover 801 and the detection table 100. A sliding groove 802 is arrayed through the top of the fixed cover 801, with the groove 802 arranged along the radial direction of the fixed cover 801. A spiral disk 803 is rotatably connected to the lower circumferential surface of the annular support 200. A ring gear 804 is fixedly mounted at the bottom of the spiral disk 803, and a drive gear 805 meshes with the inner side of the ring gear 804. The drive gear 805 is fixedly mounted on the top end of the drive shaft 607. Thus, when the motor 606 drives the drive shaft 607 to rotate, it drives the drive gear 805 to rotate synchronously. The meshing action of the drive gear 805 and the ring gear 804 drives the spiral disk 803 to rotate.

[0050] A slider 806 is slidably connected through the groove 802. The slider 806 engages with the top of the spiral disk 803. A mounting base 807 is fixedly installed on the top of the slider 806. A clamping roller 810 is provided at one end of the mounting base 807 near the disc magnetic yoke 301. Thus, when the spiral disk 803 rotates, it drives the slider 806 to move along the groove 802, and the clamping roller 810 clamps the disc magnetic yoke 301 on its circumferential surface.

[0051] A vertical bracket 808 is fixedly mounted on the top of the mounting base 807. A U-shaped horizontal plate 809 is slidably connected to the vertical bracket 808. A clamping roller 810 is rotatably connected to one end of the U-shaped horizontal plate 809 near the disc magnetic yoke 301. A second spring 811 is fixedly installed between the U-shaped horizontal plate 809 and the vertical bracket 808. The second spring 811 is used to drive the clamping roller 810 away from the vertical bracket 808. Thus, after the clamping roller 810 is in contact with the circumferential surface of the disc magnetic yoke 301, the mounting base 807 continues to move closer to the annular support 200, and the second spring 811 is compressed and contracted. Through the elasticity of the second spring 811, the clamping force of the clamping roller 810 on the disc magnetic yoke 301 is ensured.

[0052] A carbon rod 812 is fixedly installed at one end of the U-shaped horizontal plate 809 near the clamping roller 810. The carbon rod 812 is slidably connected to the vertical bracket 808. A sliding ring 813 is fixedly installed on the side of the vertical bracket 808 away from the annular support 200. The carbon rod 812 slides against the inner wall of the sliding ring 813. The carbon rod 812 and the sliding ring 813 are electrically connected. During the rotation of the disc magnetic yoke 301, if the disc magnetic yoke 301 shakes, it will squeeze one of the clamping rollers 810 outward, thereby causing the carbon rod 812 to slide outward. Specifically, the end of the carbon rod 812 away from the U-shaped horizontal plate 809 is connected to the sliding ring 813 in the same circuit. When the carbon rod 812 slides relative to the sliding ring 813, the length of the carbon rod 812 connected in the circuit changes, and the circuit resistance also changes. By detecting the internal resistance of the circuit with a ohmmeter, the shaking during the rotation of the disc magnetic yoke 301 can be detected when the resistance changes.

[0053] In use, the disc magnetic yoke 301 is placed on the annular support 200, and the rotating shaft 303 is inserted into the annular support 200. The rotating shaft 303 passes through the three inner ring belts 401 and drives the drive shaft 607 to rotate through the motor 606. This drives the drive gear 805 to rotate. The meshing of the annular gear 804 and the drive gear 805 drives the spiral disc 803 to rotate, thereby causing the slider 806 to slide along the slide groove 802. This causes the mounting seat 807 to move closer to the annular support 200. After the clamping roller 810 is in contact with the circumferential surface of the disc magnetic yoke 301, the mounting seat 807 continues to move closer to the annular support 200. The second spring 811 is compressed and contracted. Through the elasticity of the second spring 811, the clamping roller 810 is stably pressed against the circumferential surface of the disc magnetic yoke 301, providing flexible clamping and limiting of the disc magnetic yoke 301.

[0054] During the rotation of the drive shaft 607, it drives the first bevel gear 608 to rotate. In conjunction with the meshing of the first bevel gear 608 and the second bevel gear 609, it drives the two threaded rods 610 to rotate synchronously, and drives the two sliding arms 605 to move in opposite directions along the guide groove 604. The two fixed brackets 504 move in opposite directions at the same time, so that the left drive belt moves to the left and the right drive belt moves to the right, so that the inner ring belt 401 is pressed against the circumferential surface of the rotating shaft 303, and clamps and limits the rotating shaft 303.

[0055] The motor 702 drives the sprocket 703 to rotate, which in turn drives the ring chain 705 to move, thereby driving the two sprockets 704 to rotate. In conjunction with the connecting shaft 502, the drive wheel 501 rotates, the inner ring belt 401 and the outer ring belt 402 move, and the rotor body 300 rotates through the friction between the inner ring belt 401 and the rotating shaft 303.

[0056] If the disc yoke 301 shakes during rotation, it will squeeze one of the clamping rollers 810, causing the carbon rod 812 to slide outward. This changes the length of the carbon rod 812 connected to the circuit, thus changing the circuit resistance. Therefore, by monitoring the circuit resistance, it is possible to monitor whether the rotor body 300 shakes during rotation.

[0057] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dynamic balancing test device for a mining disc motor rotor, comprising a test platform (100) and a rotor body (300), characterized in that: An annular support (200) is fixedly installed at the top center of the testing platform (100). The rotor body (300) is inserted into the annular support (200). Three sets of annular friction belts (400) are provided at the bottom of the testing platform (100). All three sets of annular friction belts (400) are sleeved on the outside of the rotor body (300). One of the annular friction belts (400) is a left drive belt, and the other two annular friction belts (400) are right drive belts. The left drive belt is located between the two right drive belts. The left drive belt is attached to the right half of the circumferential surface of the rotor body (300), and the right drive belt is attached to the left half of the circumferential surface of the rotor body (300). Both the left and right drive belts are provided with internal support components (500), and a pulling component (600) is provided between the two internal support components (500). A rotation drive component (700) is provided at the bottom of the internal support component (500). A clamping component (800) is provided on the circumferential surface of the annular support (200), and the clamping component (800) is clamped on the circumferential surface of the rotor body (300). The annular friction band (400) includes an inner ring band (401) and an outer ring band (402), which are integrally formed, and the width of the outer ring band (402) is greater than the width of the inner ring band (401); The inner support assembly (500) includes a drive wheel (501), which is fitted inside one end of the inner ring belt (401) and the outer ring belt (402). Two annular frames (503) are provided inside the other end of the outer ring belt (402). The two annular frames (503) are clamped on the upper and lower sides of the inner ring belt (401). The annular frames (503) are sleeved on the outside of the rotating shaft (303). A connecting shaft (502) is fixedly installed at the center of the drive wheel (501). The connecting shaft (502) in the right drive belt passes through and is fixed at the center of the two drive wheels (501). The annular frames (503) are fixed to the drive wheel (501) by a fixing bracket (504).

2. The dynamic balancing test equipment for mining disc motor rotors according to claim 1, characterized in that: The rotor body (300) includes a disc magnetic yoke (301), on the top of the disc magnetic yoke (301) are fixed magnetic blocks (302), and a rotating shaft (303) is fixedly installed at the center of the bottom of the disc magnetic yoke (301). The disc magnetic yoke (301) is attached to the top of the annular support (200), and the diameter of the rotating shaft (303) is smaller than the inner diameter of the annular support (200).

3. The dynamic balancing test equipment for mining disc motor rotors according to claim 1, characterized in that: The fixing frame (504) includes an arc plate (5041). The ring frame (503) is fixed to the end near the drive wheel (501) by the arc plate (5041). Two crossbeams (5042) are fixedly installed in the middle of the side of the arc plate (5041) near the drive wheel (501). A fixing column (5043) is fixedly installed between the ends of the two crossbeams (5042) away from the arc plate (5041). A bottom support plate (5044) is fixedly installed at the bottom of the arc plate (5041). The connecting shaft (502) is rotatably connected to the crossbeams (5042) and the bottom support plate (5044).

4. The dynamic balancing test equipment for mining disc motor rotors according to claim 3, characterized in that: The pulling assembly (600) includes a straight-line enclosure (601) and an L-shaped enclosure (602) fixedly installed at the bottom of the testing table (100). There are two L-shaped enclosures (602), and the two L-shaped enclosures (602) are located to the left of the straight-line enclosure (601). An X-axis guide rail is formed between the straight-line enclosure (601) and the L-shaped enclosure (602), and a Y-axis guide rail is formed between the two L-shaped enclosures (602). Two U-shaped carriages (603) are slidably connected inside the X-axis guide rail. The two U-shaped carriages (603) are respectively fixedly installed on the bottom of the two base plates (5044). Two guide grooves (604) are opened through the surface of the straight plate (601). A sliding arm (605) is slidably connected through the guide groove (604). The two sliding arms (605) are respectively fixedly installed on the two fixed columns (5043). A back-off pushing member is provided between the two sliding arms (605).

5. The dynamic balancing test equipment for mining disc motor rotors according to claim 4, characterized in that: The back-off pushing component includes a motor (606) fixedly installed at the bottom of the testing platform (100). The top output end of the motor (606) is connected to a drive shaft (607). A bevel gear (608) is fixedly installed on the surface of the drive shaft (607). A bevel gear (609) meshes with the front and rear sides of the bevel gear (608). A threaded rod (610) is fixedly installed at the center of the bevel gear (609). The two threaded rods (610) have opposite thread directions. The ends of the two sliding arms (605) away from the fixed column (5043) are respectively threaded to the two threaded rods (610).

6. The dynamic balancing test equipment for mining disc motor rotors according to claim 5, characterized in that: The rotation drive component (700) includes a slide block (701) slidably connected in the Y-axis guide rail. A second motor (702) is fixedly installed on the top of the slide block (701). A first sprocket (703) is connected to the bottom output end of the second motor (702). A second sprocket (704) is connected to the bottom end of each of the two connecting shafts (502). The first sprocket (703) and the two second sprockets (704) are connected by a ring chain (705). A support (706) is provided in the Y-axis guide rail near the X-axis guide rail. The support (706) is fixedly installed at the bottom of the testing table (100). A first spring (707) is fixedly installed between the slide block (701) and the support (706).

7. The dynamic balancing test equipment for mining disc motor rotors according to claim 6, characterized in that: The clamping assembly (800) includes a fixed cover (801) fixedly installed on the central circumferential surface of the annular support (200). The top of the fixed cover (801) is provided with an array of through grooves (802). A spiral disk (803) is rotatably connected to the lower half of the annular support (200). A ring gear (804) is fixedly installed at the bottom of the spiral disk (803). A drive gear (805) meshes with the inner side of the ring gear (804). The drive gear (805) is fixedly installed on the top of the drive shaft (607). A slider (806) is slidably connected through the groove (802). The slider (806) engages with the top of the spiral disk (803). A mounting base (807) is fixedly installed on the top of the slider (806). A clamping roller (810) is provided at one end of the mounting base (807) near the disc magnetic yoke (301). The clamping roller (810) is attached to the circumferential surface of the disc magnetic yoke (301).

8. The dynamic balancing test equipment for mining disc motor rotors according to claim 7, characterized in that: A vertical bracket (808) is fixedly installed on the top of the mounting base (807). A U-shaped horizontal plate (809) is slidably connected to the vertical bracket (808). The clamping roller (810) is rotatably connected to one end of the U-shaped horizontal plate (809) near the disc magnetic yoke (301). A second spring (811) is fixedly installed between the U-shaped horizontal plate (809) and the vertical bracket (808). The second spring (811) is used to drive the clamping roller (810) away from the vertical bracket (808).

9. The dynamic balancing test equipment for mining disc motor rotors according to claim 8, characterized in that: A carbon rod (812) is fixedly installed at one end of the U-shaped horizontal plate (809) near the clamping roller (810). The carbon rod (812) is slidably connected to the vertical bracket (808). A sliding ring (813) is fixedly installed on the side of the vertical bracket (808) away from the annular support (200). The carbon rod (812) slides against the inner wall of the sliding ring (813). The carbon rod (812) and the sliding ring (813) are electrically connected.

Images