Method and auxiliary mechanism for improving the accuracy of measuring the magnetic center line of a high-voltage motor

Abstract

The present invention discloses an auxiliary mechanism for improving the accuracy of measuring the magnetic center line of a high-voltage motor in the technical field of engineering machinery equipment installation, including: a mounting frame. The auxiliary mechanism further includes: a mounting member provided at one end of the mounting frame, a fixing member provided at the other end of the mounting frame, a fixture for fixing a dial indicator provided on the mounting member, a movable block slidably provided on the fixture, a bracket provided on the movable block, and a magnifying glass provided on the bracket. The bracket is rotatably mounted on the movable block. In this application, before the motor is started, the rotor of the motor is pushed to one side of the thrust bearing, and then a dial indicator is placed on the shaft of the compressor or pump and made to contact the center position of the motor shaft. The small pointer of the dial indicator is set to an integer, and the large pointer is set to 0. Then the motor is started, the reading of the dial indicator is read, and then the integer adjusted before the motor rotates is subtracted to accurately measure the position of the magnetic center line of the motor, improving the measurement accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering machinery equipment installation, and particularly to a method and an auxiliary mechanism for improving the accuracy of measuring the magnetic center line of a high-voltage motor. Background Technique

[0002] Reciprocating compressors, high-pressure pumps and high-voltage motors are often used in the chemical industry. Driven by a high-voltage motor, the rotation of the compressor or high-pressure pump is driven, and the magnetic center line needs to be measured at the connection between the motor and the compressor or high-pressure pump to actually measure the distance between the two. The accuracy of this distance will directly affect the later operation quality of the equipment, and too large a deviation will also directly damage the equipment itself. Therefore, the measurement accuracy of the magnetic center line is crucial.

[0003] In traditional measurements, generally only direct measurement with a ruler is used, and the error is very large. Although it is within the qualified range, it is not very accurate. Therefore, problems are likely to occur during the later commissioning, resulting in damage to the machine during commissioning or operation. Summary of the Invention

[0004] The purpose of the present invention is to provide a method and an auxiliary mechanism for improving the accuracy of measuring the magnetic center line of a high-voltage motor, so as to solve the problem that only direct measurement with a ruler is used in the above-mentioned background technique, and the error is very large. Although it is within the qualified range, it is not very accurate.

[0005] To achieve the above purpose, the present invention provides the following technical solution: An auxiliary mechanism for improving the accuracy of measuring the magnetic center line of a high-voltage motor, including: a mounting frame, and the auxiliary mechanism further includes: a mounting member provided at one end of the mounting frame;

[0006] A fixing member is provided at the other end of the mounting frame, and a clamp for fixing a dial indicator is provided on the mounting member;

[0007] A movable block is slidably provided on the clamp, a bracket is provided on the movable block, and a magnifying glass is provided on the bracket;

[0008] Wherein, the bracket is rotatably mounted on the movable block; the movable block moves to change the distance between the magnifying glass and the mounting member.

[0009] Preferably, a support rod is provided on the fixture. A contact block and an elastic member connected to the contact block are slidably provided on the support rod. The moving path of the contact block is perpendicular to the rotor of the high-voltage motor. A moving support block having the same moving path as the contact block is slidably provided on the support rod. A bolt for fixing the moving support block is provided on the support rod. A slot is formed on one side of the end of the moving support block facing the contact block. An installation block and an elastic element connected to the installation block are slidably provided in the slot. A touch switch is provided on the side of the installation block facing the contact block. A contact switch is provided in the slot. Two groups of warning lights are provided on the moving support block. The two groups of warning lights are electrically connected to the touch switch and the contact switch respectively.

[0010] Preferably, the support rod includes a sleeve and a movable rod slidably inserted into the sleeve; the moving path of the movable rod is the same as the extending direction of the rotor of the high-voltage motor, and a fixing bolt for fixing the movable rod is screwed on the sleeve.

[0011] Preferably, the mounting bracket is a telescopic mounting bracket. The moving path of the telescopic mounting bracket is the same as the moving path of the movable rod. The mounting member is rotatably mounted on the movable end of the telescopic mounting bracket, and the mounting member rotates around the axis of the mounting bracket.

[0012] Preferably, a connecting plate is slidably provided on the mounting bracket. A mounting plate is slidably provided on the connecting plate. The moving path of the mounting plate is perpendicular to the moving path of the connecting plate. The fixing member is mounted on the mounting plate.

[0013] Preferably, a method for improving the accuracy of measuring the magnetic center line of a high-voltage motor uses an auxiliary mechanism for improving the accuracy of measuring the magnetic center line of a high-voltage motor, which specifically includes the following steps:

[0014] S1: Before starting the high-voltage motor, push the rotor of the high-voltage motor to one side of the thrust bearing, then fix the fixing member on the shaft of the compressor or pump, and then use the fixture to install the dial indicator on the mounting member, and make the measuring head of the dial indicator contact the center position of the rotor of the high-voltage motor. Then, point the small pointer of the dial indicator to an integer position and the large pointer to the 0 position.

[0015] S2: Start the high-voltage motor. After the pointer of the dial indicator stabilizes, read the reading of the dial indicator, and then subtract the integer adjusted before the high-voltage motor rotates to measure the position of the magnetic center line of the high-voltage motor.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: Before the motor starts, the rotor of the motor is pushed to one side of the thrust bearing pad. Then, a dial indicator is placed on the shaft of the compressor or pump and made to contact the center position of the motor shaft. The small pointer of the dial indicator is set to an integer position, and the large pointer is set to the 0 position. After starting the motor, when the pointer of the dial indicator stabilizes, the reading of the dial indicator is read, and then the integer adjusted before the motor rotates is subtracted to accurately measure the position of the magnetic center line of the motor, improving the measurement accuracy and reducing the probability of problems occurring during equipment use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of the present invention;

[0018] Figure 2 It is an enlarged schematic diagram of the structure at A of the present invention;

[0019] Figure 3 It is a schematic diagram of the connection structure between the support rod and the contact block of the present invention;

[0020] Figure 4 It is an enlarged schematic diagram of the structure at B of the present invention;

[0021] Figure 5 It is a schematic diagram of the connection structure between the mounting bracket and the fixing member of the present invention.

[0022] In the figure: 1, mounting bracket; 2, fixing member; 3, mounting plate; 4, connecting plate; 5, mounting member; 6, fixture; 7, movable block; 8, magnifying glass; 9, support rod; 10, contact block; 11, moving support block; 12, warning light; 13, mounting block; 14, touch switch; 15, slot; 16, bracket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] Embodiment 1:

[0025] Please refer to Figure 1 and Figure 5 , an auxiliary mechanism for improving the accuracy of measuring the magnetic center line of a high-voltage motor, including: a mounting bracket 1, a mounting member 5 is installed at one end of the mounting bracket 1, and a fixing member 2 is installed at the other end of the mounting bracket 1. The fixing member 2 is fixed on the shaft of the compressor or pump, thereby installing the mounting bracket 1 on the shaft of the compressor or pump; a fixture 6 is provided on the mounting member 5 for clamping the dial indicator for detection and fixing it at the mounting member 5.

[0026] In this embodiment, as a further optimized solution, please refer to Figure 1 , the mounting bracket 1 is a telescopic mounting bracket (the telescopic mounting bracket is composed of two parts of the bracket body, one bracket body is slidably mounted on the other bracket body, and by sliding one of the bracket bodies, it is used to adjust the length of the telescopic mounting bracket). By the telescopic movement of the telescopic mounting bracket, it is used to change the length of the mounting bracket 1, so that the mounting member 5 is close to or away from the rotor of the high-voltage motor; the mounting member 5 is rotatably mounted on the mobile end of the mounting bracket 1, and the rotation direction of the mounting member 5 is to rotate around the axis of the mounting bracket 1, which is used to adjust the angle between the mounting member 5 and the dial indicator, facilitating the reading of the index on the dial indicator.

[0027] In this embodiment, as a further optimized solution, please refer to Figure 1 and Figure 5 , a connecting plate 4 is slidably provided on the mounting bracket 1, a mounting plate 3 is slidably provided on the connecting plate 4, the moving path of the mounting plate 3 is perpendicular to the moving path of the connecting plate 4, and the fixing member 2 is mounted on the mounting plate 3; by the movement of the mounting plate 3 and the connecting plate 4, it is used to adjust the position of the mounting bracket 1, so that the position of the dial indicator can be adjusted, ensuring that the dial indicator can move to a predetermined position for measurement and guaranteeing the measurement accuracy.

[0028] Please refer to Figure 1 and Figure 5 , a movable block 7 is slidably provided on the fixture 6, a bracket 16 is provided on the movable block 7, and a magnifying glass 8 is provided on the bracket 16; move the movable block 7 to change (increase or decrease) the distance between the magnifying glass 8 and the mounting member 5; the bracket 16 is rotatably mounted on the movable block 7, and by rotating the bracket 16, it is used to adjust the position of the magnifying glass 8, using the magnifying glass 8 to magnify the dial of the dial indicator, facilitating the reading of the index on the dial indicator and making the read data more accurate.

[0029] Embodiment 2:

[0030] As a preferred solution, please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , a support rod 9 is provided on the fixture 6, a contact block 10 is slidably provided on the support rod 9, an elastic member is installed between the contact block 10 and the support rod 9, and the moving path of the contact block 10 is perpendicular to the rotor of the high-voltage motor (in accordance with Figure 1In the middle direction, the contact block 10 can move up and down); a moving support block 11 is slidably arranged on the support rod 9, and the moving path of the moving support block 11 is the same as that of the contact block 10. A bolt is screwed on the support rod 9, and the fastening end of the bolt fits against the moving support block 11 for fixing the moving support block 11; on one side of the end of the moving support block 11 facing the contact block 10, a slot 15 is opened, and an installation block 13 is slidably arranged in the slot 15. An elastic element is installed between the slot 15 and the installation block 13. On the side of the installation block 13 facing the contact block 10, a touch switch 14 is arranged. A contact switch is arranged in the slot 15, and the contact switch is located inside the installation block 13; two groups of warning lights 12 are arranged on the moving support block 11 (the warning lights 12 refer to LED lights, and the two groups of LED lights emit different colors). The two groups of warning lights 12 are electrically connected to the touch switch 14 and the contact switch respectively through wires; after the dial indicator touches the center position of the motor rotor, adjust the support rod 9 so that the contact block 10 contacts the side wall of the high-voltage motor rotor, and then adjust the moving support block 11 so that the touch switch 14 contacts the end of the contact block 10 (this end is the end of the contact block 10 away from the high-voltage motor rotor). Because the touch switch 14 contacts the contact block 10, one of the two groups of warning lights 12 will emit light; then rotate the installation part 5 to make the contact block 10 rotate around the motor rotor for one circle. If the dial indicator touches the center position of the high-voltage motor rotor, the contact block 10 will not move. If the dial indicator does not touch the center position of the high-voltage motor rotor, the contact block 10 will move (the contact block 10 approaches or moves away from the moving support block 11), which will cause the installation block 13 to press the contact switch, making the other group of warning lights 12 also emit light, or making the contact block 10 not contact the touch switch 14, making both groups of warning lights 12 not emit light, to prompt the staff to timely adjust the position of the dial indicator, so as to detect the position of the dial indicator before starting the measurement of the high-voltage motor, ensure that the position of the dial indicator is qualified, and guarantee the measurement accuracy.

[0031] In this embodiment, as a further optimized solution, please refer to Figure 1 , Figure 2 and Figure 3 , the support rod 9 includes a sleeve and a movable rod slidably inserted into the sleeve; when the movable rod moves, the contact block 10 approaches or moves away from the rotor of the high-voltage motor. A fixing bolt for fixing the movable rod is screwed on the sleeve; loosen the fixing bolt and move the movable rod to adjust the length of the support rod 9 to ensure that the contact block 10 can contact the rotor of the motor.

[0032] A method for improving the accuracy of measuring the magnetic center line of a high-voltage motor, using an auxiliary mechanism for improving the accuracy of measuring the magnetic center line of a high-voltage motor, specifically including the following steps:

[0033] S1: Before starting the high-voltage motor, push the rotor of the high-voltage motor to one side of the thrust bearing, then install the fixing part 2 on the shaft of the compressor or pump. Next, use the clamp 6 to install the dial indicator on the mounting part 5, and make the measuring head of the dial indicator contact the center position of the high-voltage motor rotor. Then, point the small pointer of the dial indicator to an integer position and the large pointer to the 0 position;

[0034] S2: Start the high-voltage motor. At this time, the rotor of the high-voltage motor will axially move back and forth, and the pointer and numbers of the dial indicator will also change accordingly. After the pointer of the dial indicator stabilizes, read the reading of the dial indicator. Then, subtract the integer adjusted before the high-voltage motor rotates to accurately measure the position of the magnetic center line of the high-voltage motor.

[0035] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Auxiliary mechanism for improving the accuracy of measuring the magnetic center line of high-voltage motors, comprising: Mounting bracket (1), characterized in that: the auxiliary mechanism further includes: a mounting member (5) provided at one end of the mounting bracket (1); A fixing member (2) is provided at the other end of the mounting bracket (1), and a fixture (6) for fixing a dial indicator is provided on the mounting member (5); A movable block (7) is slidably provided on the fixture (6), a bracket (16) is provided on the movable block (7), and a magnifying glass (8) is provided on the bracket (16); Wherein, the bracket (16) is rotatably mounted on the movable block (7); the movable block (7) moves to change the distance between the magnifying glass (8) and the mounting member (5); A support rod (9) is provided on the fixture (6), a contact block (10) and an elastic member connected to the contact block (10) are slidably provided on the support rod (9), the moving path of the contact block (10) is perpendicular to the high-voltage motor rotor, a moving support block (11) with the same moving path as the contact block (10) is slidably provided on the support rod (9), a bolt for fixing the moving support block (11) is provided on the support rod (9), a slot (15) is formed on one side of the end of the moving support block (11) facing the contact block (10), a mounting block (13) and an elastic element connected to the mounting block (13) are slidably provided in the slot (15), a touch switch (14) is provided on the side of the mounting block (13) facing the contact block (10), a contact switch is provided in the slot (15), and two groups of warning lights (12) are provided on the moving support block (11), and the two groups of warning lights (12) are electrically connected to the touch switch (14) and the contact switch respectively.

2. The auxiliary mechanism for improving the accuracy of measuring the magnetic center line of a high-voltage motor according to claim 1, characterized in that: The support rod (9) includes a sleeve and a movable rod slidably inserted into the sleeve; the moving path of the movable rod is the same as the extending direction of the high-voltage motor rotor, and a fixing bolt for fixing the movable rod is screwed on the sleeve.

3. The auxiliary mechanism for improving the accuracy of measuring the magnetic center line of a high-voltage motor according to claim 2, characterized in that: The mounting bracket (1) is a telescopic mounting bracket, the moving path of the telescopic mounting bracket is the same as the moving path of the movable rod, the mounting member (5) is rotatably mounted on the movable end of the telescopic mounting bracket, and the mounting member (5) rotates around the axis of the mounting bracket (1).

4. The auxiliary mechanism for improving the accuracy of measuring the magnetic center line of a high-voltage motor according to claim 1, characterized in that: A connecting plate (4) is slidably provided on the mounting bracket (1), a mounting plate (3) is slidably provided on the connecting plate (4), the moving path of the mounting plate (3) is perpendicular to the moving path of the connecting plate (4), and the fixing member (2) is mounted on the mounting plate (3).

5. A method for improving the accuracy of measuring the magnetic center line of a high-voltage motor, using the auxiliary mechanism for improving the accuracy of measuring the magnetic center line of a high-voltage motor according to any one of claims 1-4, characterized in that: Specifically, it includes the following steps: S1: Before starting the high-voltage motor, push the rotor of the high-voltage motor to one side of the thrust bearing, then fix the fixing member (2) on the shaft of the compressor or pump, then use the fixture (6) to install the dial indicator on the mounting member (5), and make the measuring head of the dial indicator contact the center position of the high-voltage motor rotor. Then, point the small pointer of the dial indicator to the integer position and the large pointer to the 0 position; S2: Start the high-voltage motor. After the pointer of the dial indicator stabilizes, read the reading of the dial indicator, and then subtract the integer adjusted before the high-voltage motor rotates to measure the position of the magnetic center line of the high-voltage motor.

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