A high-power motor centering adjustment tool and method thereof

Abstract

The application discloses a large-power motor centering adjustment tool, which comprises a horizontal adjustment mechanism (3), a tool fixing device (4) and a vertical adjustment mechanism (5), and is characterized in that the tool fixing device (4) comprises locking bolts (10), guide rails (11) and U-shaped clamping frames (12), the U-shaped clamping frames are tightly pressed on motor bases by rotating and locking the locking bolts, and the two side arms of the U-shaped clamping frames clamp the motor bases; the horizontal adjustment mechanism (3) is used for adjusting the horizontal position of the motor, and the horizontal adjustment mechanism comprises a top block (6), a pin hole (7), a screw rod (8), an L-shaped cross frame (9) and a horizontal scale (13); the screw rod drives the top block to move linearly through rotary motion; and the top block drives the motor to move horizontally through external force. The application has the advantages of convenient operation, simple structure, high working efficiency and high adjustment precision.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical equipment and high-power motor installation, and in particular to a high-power motor centering adjustment tool and a method thereof. Background Art

[0002] During motor installation, the rotation centers of the two shafts connected by the coupling of the motor and driven machine must be strictly concentric, otherwise the normal operation of the shaft, bearings, and other parts on the shaft will be seriously affected. When aligning the coupling, the horizontal and vertical positions of the motor must be adjusted with the coupling end face of the driven machine as a reference to achieve the centering of the coupling between the motor and the driven machine. The existing methods for adjusting the position of high-power motors are: one is to use a crowbar and a sling to complete the adjustment, and the other is to use an adjustment tool to adjust the horizontal and vertical position of the motor. Due to the large size and weight of high-power motors, the existing adjustment tool has problems such as low work efficiency, low adjustment accuracy, and inconvenient operation. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a high-power motor centering adjustment tool and method thereof, which has the advantages of easy operation, simple structure, high working efficiency and high adjustment accuracy.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A high-power motor centering adjustment tool comprises a horizontal adjustment mechanism (3), a tool fixing device (4), and a vertical adjustment mechanism (5); a motor base (2) is provided at the bottom of the motor (1); and the tool fixing device is fixed on the motor base; the tool fixing device (4) comprises a locking bolt (10), a guide rail (11), and a U-shaped clamping frame (12); the locking bolt is mounted on one side arm of the U-shaped clamping frame, the U-shaped clamping frame is tightened against the motor base by tightening the locking bolt, and the two side arms of the U-shaped clamping frame clamp the motor base; the guide rail is mounted on the upper part of the U-shaped clamping frame, and two parallel guide rails are mounted on the U-shaped clamping frame, and the sliding direction of the guide rails is perpendicular to the rotation axis of the motor; the horizontal adjustment mechanism comprises a horizontal adjustment mechanism (3), a tool fixing device (4), and a vertical adjustment mechanism (5); the tool fixing device (4) comprises a locking bolt (10), a guide rail (11), and a U-shaped clamping frame (12); the locking bolt is mounted on one side arm of the U-shaped clamping frame, and the U-shaped clamping frame is tightened against the motor base by tightening the locking bolt, and the two side arms of the U-shaped clamping frame clamp the motor base; the guide rail is mounted on the upper part of the U-shaped clamping frame, and two parallel guide rails are mounted on the U-shaped clamping frame, and the sliding direction of the guide rails is perpendicular to the rotation axis of the motor; The joint mechanism (3) is used to adjust the horizontal position of the motor. The horizontal adjustment mechanism includes a top block (6), a pin hole (7), a screw rod (8), an L-shaped cross frame (9), and a horizontal scale (13). The screw rod is connected to the L-shaped cross frame. The screw rod pushes the top block to move linearly through rotation. One end of the screw rod is drilled and the other end is processed into a hexagonal nut shape. The screw rod is screwed into the threaded hole on the L-shaped cross bar. The top block pushes the motor to move horizontally through external force. A pin hole is drilled at the top of the top block. The screw rod and the top block are connected together by a pin. One end of the L-shaped cross bar is welded to one side arm of the U-shaped clamping frame. The horizontal scale is vertically installed on one side arm of the L-shaped cross bar. The horizontal scale is set parallel to the axis of the locking bolt. The horizontal scale is used to measure the displacement value of the top block.

[0006] Furthermore, the vertical adjustment mechanism (5) is used to adjust the vertical position of the motor. The vertical adjustment mechanism includes a gear (14), a wedge block (15), a height scale (16), a gear seat (17), a rack (18), a ratchet wrench (19), a rotating shaft (20), and a slide (21). A slide is provided above the guide rail, and a gear seat is fixed on the slide. The gear seat has a U-shaped structure. The gear is fixed on the rotating shaft. Both ends of the rotating shaft are installed on the gear seat through bearings and bearing seats. One end of the rotating shaft has a plum blossom-shaped clamping opening, and the rack is connected to In the upper slide groove of the slide, the rack can move linearly relative to the slide or the rack is connected to the moving part of the slide, and the gear seat is installed on the slide by screws; the ratchet wrench drives the gear to rotate by shaking the rotating shaft, and the wedge block is fixed to the front end of the rack by screws. Through the displacement of the rack, the inclined surface of the wedge block enters the foot groove of the motor. As the height of the inclined surface of the wedge block increases, the vertical position of the motor gradually increases until the motor is adjusted to the target height position. The inclined surface of the wedge block is provided with a height scale, which can accurately measure the adjusted height value of the motor.

[0007] Furthermore, a dovetail groove slide (22) is provided at the lower portion of the slide (21), the dovetail groove slide is mounted on two guide rails (11), and the dovetail groove slide has a guide rail slide groove; by moving the slide, high-power motors of different specifications can be adapted.

[0008] Furthermore, centering adjustment tools are installed at the four corners of the motor (1), and the centering adjustment tools are respectively a left front motor centering tool (24), a right front motor centering tool (25), a left rear motor centering tool (26), and a right rear motor centering tool (27). The shaft end of the motor (1) is connected to a motor end half coupling (28), and the shaft end of the driven motor (29) is connected to a driven motor end half coupling (30).

[0009] A method for adjusting a high-power motor centering adjustment tool, characterized in that:

[0010] S1: Install the motor alignment adjustment tool on the four corners of the motor base;

[0011] S2: Install the tool fixture (4) on the motor base, tighten the locking bolt (10), install the four dovetail groove slides at the bottom of the slide (21) into the two parallel guide rails (11) at the top of the U-shaped clamping frame, and move the slide so that the front end of the wedge block (15) is aligned with the foot groove of the motor (1);

[0012] S3: Adjust the alignment of the motor (1) and the driven machine (29): With the end face of the driven machine half coupling (30) as a reference, adjust the radial deviation and horizontal deviation of the motor; wherein, adjust the horizontal deviation of the motor: when the end face of the motor half coupling (28) has a centerline left deviation relative to the end face of the driven machine half coupling, tighten the screw (8) of the left front motor alignment tool (24) and the right rear motor alignment tool (27) to move the motor horizontally until the horizontal deviation of the motor half coupling and the driven machine half coupling reaches the allowable deviation value;

[0013] S4: When the coupling end face of the motor has a centerline right deviation relative to the half coupling end face of the driven machine, the screws (8) of the right front motor centering tool (25) and the left rear motor centering tool (26) can be tightened to move the motor horizontally until the horizontal deviation between the half coupling of the motor and the half coupling of the driven machine reaches the allowable deviation value;

[0014] S5: Adjustment of radial deviation of the motor: When the end face of the motor half-coupling is deviated downward relative to the half-coupling of the driven machine, that is, the front of the motor is lower and the back is higher, the ratchet wrench (19) of the left front motor centering tool (24) and the right front motor centering tool (25) can be shaken to push the wedge block (15) into the foot groove of the motor and raise the front end of the motor until the radial deviation between the motor half-coupling and the half-coupling of the driven machine reaches the allowable deviation value. The motor front end elevation value is read from the height scale (16) on the wedge block, and then, according to the elevation value, a shim of the same thickness as the elevation value is added to each of the two front corners of the front end of the motor;

[0015] S6: When the end face of the motor half-coupling is deviated from the half-coupling of the driven machine, i.e., the front of the motor is higher than the back, shake the ratchet wrench (19) of the left rear motor centering tool (26) and the right rear motor centering tool (27), push the wedge block (15) into the foot groove of the motor, and raise the rear end of the motor until the radial deviation between the motor half-coupling and the half-coupling of the driven machine reaches the allowable deviation value. Read the rear end elevation value of the motor from the height scale (16) on the wedge block, and then add a shim of the same thickness as the elevation value to each of the two rear corners of the rear end of the motor according to the elevation value.

[0016] The high-power motor centering adjustment tool and method of the present invention have the following beneficial technical effects:

[0017] (1) The centering adjustment tool adopts a U-shaped clamping frame to be fixed on the motor base or slide rail during motor adjustment, which enhances the stability of motor adjustment. The slide table and slide rail are used in the positioning of the motor vertical position adjustment mechanism. By moving the slide table, it can be used on different models of high-power motors, and has a wider range of uses.

[0018] (2) The centering adjustment tool is equipped with a horizontal scale and a height scale, which can directly read the horizontal and height displacement values ​​of the motor, solving the problem of low adjustment accuracy of traditional motors; it adopts a gear-rack transmission method, a wedge block inclined surface to raise the motor, and a ratchet wrench to rotate the gear. Compared with the existing adjustment tooling, it has the advantages of easy operation, simple structure, high work efficiency and high adjustment accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of a high-power motor centering adjustment tool installed on a motor according to the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the tool fixing device and the level adjustment mechanism of the present invention;

[0021] Figure 3 This is a schematic diagram of the main structure of the vertical adjustment mechanism of the present invention;

[0022] Figure 4 This is a side structural diagram of the vertical adjustment mechanism of the present invention;

[0023] Figure 5 This is a schematic diagram of the centering installation structure of the motor and the driven machine of the present invention.

[0024] In the figure: motor 1, motor base / slide rail 2, horizontal adjustment mechanism 3, tool fixing device 4, vertical adjustment mechanism 5, top block 6, pin hole 7, screw rod 8, L-shaped cross frame 9, locking bolt 10, guide rail 11, U-shaped clamping frame 12, horizontal scale 13, gear 14, wedge block 15, height scale 16, gear seat 17, rack 18, ratchet wrench 19, rotating shaft 20, slide 21, dovetail groove slide 22, guide rail slide 23, left front motor centering tool 24, right front motor centering tool 25, left rear motor centering tool 26, right rear motor centering tool 27, motor end half coupling 28, driven machine 29, driven machine end half coupling 30. DETAILED DESCRIPTION

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0026] The present invention will be described in further detail below with reference to the accompanying drawings.

[0027] like Figure 1-5As shown, a high-power motor centering adjustment tool includes a horizontal adjustment mechanism 3, a tool fixing device 4, and a vertical adjustment mechanism 5. A motor base / slide rail 2 is provided at the bottom of the motor 1, and the tool fixing device 4 is fixed to the motor base 2; it is characterized in that: the tool fixing device 4 includes a locking bolt 10, a guide rail 11, and a U-shaped clamping frame 12, the locking bolt 10 is installed on one side arm of the U-shaped clamping frame 12, and the U-shaped clamping frame 12 is tightened to the motor base 2 by tightening the locking bolt 10. The two side arms of the U-shaped clamping frame 12 clamp the motor base 2, and the guide rail 11 is installed on the upper part of the U-shaped clamping frame 12. Two parallel guide rails 11 are installed on the U-shaped clamping frame 12, and the sliding direction of the guide rail 11 is perpendicular to the rotation axis of the motor 1; horizontal adjustment Mechanism 3 is used to adjust the horizontal position of the motor 1. The horizontal adjustment mechanism 3 includes a top block 6, a pin hole 7, a screw rod 8, an L-shaped cross frame 9, and a horizontal scale 13. The screw rod 8 is connected to the L-shaped cross frame 9. The screw rod 8 pushes the top block 6 to move linearly through rotational motion. One end of the screw rod 8 is drilled and the other end is processed into a hexagonal nut shape. The screw rod 8 is screwed into the threaded hole on the L-shaped cross bar 9. The top block 6 pushes the motor 1 to move horizontally through external force. A pin hole 7 is drilled at the top of the top block 6. The screw rod 8 and the top block 6 are connected together by a pin. One end of the L-shaped cross bar 9 is welded to one side arm of the U-shaped clamping frame 12. The horizontal scale 13 is vertically installed on one side arm of the L-shaped cross bar 9. The horizontal scale 13 is set parallel to the axis of the locking bolt 10. The horizontal scale 13 is used to measure the displacement value of the top block 6.

[0028] The vertical adjustment mechanism 5 is used to adjust the vertical position of the motor 1. The vertical adjustment mechanism 5 includes a gear 14, a wedge block 15, a height scale 16, a gear seat 17, a rack 18, a ratchet wrench 19, a rotating shaft 20, and a slide 21. A slide 21 is provided above the guide rail 11. A gear seat 17 is fixed on the slide 21. The gear seat 17 has a U-shaped structure. The gear 14 is fixed on the rotating shaft 20. Both ends of the rotating shaft 20 are mounted on the gear seat 17 through bearings and bearing seats. One end of the rotating shaft 20 has a plum blossom-shaped clamping port. The rack 18 is connected to the upper slide groove of the slide 21. The rack 18 can move linearly relative to the slide 21 or the rack 18 is connected to the moving part of the slide 21. The gear 1 4 and the rack 18 are driven by the gear 14 to convert the rotary motion into the reciprocating linear motion of the rack 18. The gear seat 17 is used to fix the gear 14 and the rotating shaft 20. The gear seat 17 is installed on the slide 21 by screws. The ratchet wrench 19 drives the gear 14 to rotate by shaking the rotating shaft 20. The wedge block 15 is fixed to the front end of the rack 18 by screws. As the rack 18 moves, the inclined surface of the wedge block 15 enters the foot groove of the motor 1. As the height of the inclined surface of the wedge block 15 increases, the vertical position of the motor 1 gradually rises until the motor 1 is adjusted to the target height position. The inclined surface of the wedge block 15 is provided with a height scale 16, which can accurately measure the adjusted height value of the motor.

[0029] A dovetail groove slide 22 is provided at the lower part of the slide 21 . The dovetail groove slide 22 is installed on the two guide rails 11 . The dovetail groove slide 22 has a guide rail slide 23 . By moving the slide 21 , high-power motors of different specifications can be adapted.

[0030] Centering adjustment tools are installed at the four corners of the motor 1, namely the left front motor centering tool 24, the right front motor centering tool 25, the left rear motor centering tool 26, and the right rear motor centering tool 27. The shaft end of the motor 1 is connected to the motor end half coupling 28, and the shaft end of the driven motor 29 is connected to the driven motor end half coupling 30.

[0031] A method for adjusting a high-power motor centering adjustment tool, characterized in that:

[0032] S1: Install the motor centering adjustment tools on the four corners of the motor base 2 respectively;

[0033] S2: Install the tool fixture 4 on the motor base 2, tighten the locking bolts 10, install the four dovetail groove slides 22 at the bottom of the slide 21 into the two parallel guide rails 11 on the upper part of the U-shaped clamping frame 12, and move the slide 21 so that the front end of the wedge block 15 is aligned with the foot groove of the motor 1;

[0034] S3: Shaft alignment adjustment between motor 1 and driven machine 29: Using the end face of the half-coupling 30 of the driven machine 29 as a reference, adjust the radial and horizontal deviations of motor 1. Horizontal deviation adjustment of motor 1: When the end face of the half-coupling 28 of motor 1 deviates to the left of the centerline relative to the end face of the half-coupling 30 of the driven machine 29, tighten the screw 8 of the left front motor alignment tool 24 and the right rear motor alignment tool 27 to move motor 1 horizontally until the horizontal deviation between the half-coupling 28 of motor 1 and the half-coupling 30 of the driven machine 29 reaches the allowable deviation value.

[0035] S4: When the end face of the coupling 28 of the motor 1 is offset to the right of the centerline relative to the end face of the half coupling 30 of the driven machine 29, tighten the screw 8 of the right front motor centering tool 25 and the left rear motor centering tool 26 to move the motor 1 horizontally until the horizontal deviation between the half coupling 28 of the motor 1 and the half coupling 30 of the driven machine 29 reaches the allowable deviation value;

[0036] S5: Adjusting the radial deviation of the motor 1: When the end face of the half coupling 28 of the motor 1 deviates downward relative to the half coupling 30 of the driven machine 29, that is, the front of the motor 1 is lower than the back, the ratchet wrench 19 of the left front motor alignment tool 24 and the right front motor alignment tool 25 can be shaken to push the wedge block 15 into the foot groove of the motor 1, and the front end of the motor 1 is raised until the radial deviation of the half coupling 28 of the motor 1 and the half coupling 30 of the driven machine 29 reaches the allowable deviation value. The motor front end elevation value is read from the height scale 16 on the wedge block 15, and then, according to the elevation value, shims of the same thickness as the elevation value are added to the two front corners of the front end of the motor 1;

[0037] S6: When the end face of the half coupling 28 of the motor 1 has an upward deviation relative to the half coupling 30 of the driven machine 29, that is, the front of the motor 1 is higher than the back, shake the ratchet wrench 19 of the left rear motor centering tool 26 and the right rear motor centering tool 27, push the wedge block 15 into the foot groove of the motor 1, and lift the rear end of the motor 1 until the radial deviation between the half coupling 28 of the motor 1 and the half coupling 30 of the driven machine 29 reaches the allowable deviation value, read the rear end elevation value of the motor 1 from the height scale 16 on the wedge block 15, and then, according to the elevation value, add a gasket of the same thickness as the elevation value to each of the two rear corners of the rear end of the motor 1.

[0038] The high-power motor centering adjustment tool and method of the present invention have the following beneficial technical effects:

[0039] (1) The centering adjustment tool adopts a U-shaped clamping frame to be fixed on the motor base or slide rail during motor adjustment, which enhances the stability of motor adjustment. The slide table and slide rail are used in the positioning of the motor vertical position adjustment mechanism. By moving the slide table, it can be used on different models of high-power motors, and has a wider range of uses.

[0040] (2) The centering adjustment tool is equipped with a horizontal scale and a height scale, which can directly read the horizontal and height displacement values ​​of the motor, solving the problem of low adjustment accuracy of traditional motors; it adopts a gear-rack transmission method, a wedge block inclined surface to raise the motor, and a ratchet wrench to rotate the gear. Compared with the existing adjustment tooling, it has the advantages of easy operation, simple structure, high work efficiency and high adjustment accuracy.

[0041] The above-mentioned embodiments are illustrative of the present invention, not limiting thereof. It is understood that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-power motor centering adjustment tool, comprising a horizontal adjustment mechanism (3), a tool fixing device (4), and a vertical adjustment mechanism (5), wherein a motor base (2) is provided at the bottom of the motor (1), and the tool fixing device is fixed on the motor base; characterized in that: The tool fixing device (4) includes a locking bolt (10), a guide rail (11), and a U-shaped clamping frame (12). The locking bolt is installed on one side arm of the U-shaped clamping frame. The U-shaped clamping frame is tightened on the motor base by tightening the locking bolt. The two side arms of the U-shaped clamping frame clamp the motor base. The guide rail is installed on the upper part of the U-shaped clamping frame. Two parallel guide rails are installed on the U-shaped clamping frame. The sliding direction of the guide rail is perpendicular to the rotation axis of the motor. The horizontal adjustment mechanism (3) is used to adjust the horizontal position of the motor. The horizontal adjustment mechanism includes a top block (6), a pin hole (7), a screw rod (8 ), L-shaped cross frame (9), horizontal scale (13), the screw is connected to the L-shaped cross frame, the screw drives the top block to move linearly through rotational motion, one end of the screw is drilled, and the other end is processed into a hexagonal nut shape, the screw is screwed into the threaded hole on the L-shaped cross bar, the top block drives the motor to move horizontally through external force, a pin hole is drilled at the top of the top block, the screw and the top block are connected together by a pin, one end of the L-shaped cross bar is welded to one side arm of the U-shaped clamping frame, the horizontal scale is vertically installed on one side arm of the L-shaped cross bar, the horizontal scale is set parallel to the axis of the locking bolt, and the horizontal scale is used to measure the displacement value of the top block; The vertical adjustment mechanism (5) is used to adjust the vertical position of the motor. The vertical adjustment mechanism includes a gear (14), a wedge block (15), a height scale (16), a gear seat (17), a rack (18), a ratchet wrench (19), a rotating shaft (20), and a slide (21). A slide is provided above the guide rail, and a gear seat is fixed on the slide. The gear seat has a U-shaped structure. The gear is fixed on the rotating shaft. Both ends of the rotating shaft are installed on the gear seat through bearings and bearing seats. One end of the rotating shaft has a plum blossom-shaped clamping opening. The rack is connected to the slide. In the upper slide, the rack can move linearly relative to the slide or the rack is connected to the moving part of the slide, and the gear seat is installed on the slide by screws; the ratchet wrench drives the gear to rotate by shaking the rotating shaft, and the wedge block is fixed to the front end of the rack by screws. As the rack moves, the inclined surface of the wedge block enters the foot groove of the motor. As the height of the inclined surface of the wedge block increases, the vertical position of the motor gradually rises until the motor is adjusted to the target height position. The inclined surface of the wedge block is provided with a height scale, which can accurately measure the adjusted height value of the motor. A dovetail groove slide (22) is provided at the lower portion of the slide (21), and the dovetail groove slide is mounted on two guide rails (11), and the dovetail groove slide has guide rail grooves; by moving the slide, high-power motors of different specifications can be adapted.

2. A high-power motor centering adjustment tool as claimed in claim 1, characterized in that: Centering adjustment tools are installed at the four corners of the motor (1), respectively. The centering adjustment tools are a left front motor centering tool (24), a right front motor centering tool (25), a left rear motor centering tool (26), and a right rear motor centering tool (27). The shaft end of the motor (1) is connected to a motor end half coupling (28), and the shaft end of the driven motor (29) is connected to a driven motor end half coupling (30).

3. A method for adjusting a high-power motor centering adjustment tool, comprising the high-power motor centering adjustment tool according to claim 2, characterized in that: S1: Install the motor alignment adjustment tool on the four corners of the motor base; S2: Install the tool fixture (4) on the motor base, tighten the locking bolt (10), install the four dovetail groove slides at the bottom of the slide (21) into the two parallel guide rails (11) at the top of the U-shaped clamping frame, and move the slide so that the front end of the wedge block (15) is aligned with the foot groove of the motor (1); S3: Adjust the alignment of the motor (1) and the driven machine (29): With the end face of the driven machine half coupling (30) as a reference, adjust the radial deviation and horizontal deviation of the motor; wherein, adjust the horizontal deviation of the motor: when the end face of the motor half coupling (28) has a centerline left deviation relative to the end face of the driven machine half coupling, tighten the screw (8) of the left front motor alignment tool (24) and the right rear motor alignment tool (27) to move the motor horizontally until the horizontal deviation of the motor half coupling and the driven machine half coupling reaches the allowable deviation value; S4: When the coupling end face of the motor has a centerline right deviation relative to the half coupling end face of the driven machine, the screws (8) of the right front motor centering tool (25) and the left rear motor centering tool (26) can be tightened to move the motor horizontally until the horizontal deviation between the half coupling of the motor and the half coupling of the driven machine reaches the allowable deviation value; S5: Adjustment of radial deviation of the motor: When the end face of the motor half-coupling is deviated downward relative to the half-coupling of the driven machine, that is, the front of the motor is lower and the back is higher, the ratchet wrench (19) of the left front motor centering tool (24) and the right front motor centering tool (25) can be shaken to push the wedge block (15) into the foot groove of the motor and raise the front end of the motor until the radial deviation between the motor half-coupling and the half-coupling of the driven machine reaches the allowable deviation value. The motor front end elevation value is read from the height scale (16) on the wedge block, and then, according to the elevation value, a shim of the same thickness as the elevation value is added to each of the two front corners of the front end of the motor; S6: When the end face of the motor half-coupling is deviated from the half-coupling of the driven motor, i.e., the front of the motor is higher than the back, shake the ratchet wrench (19) of the left rear motor centering tool (26) and the right rear motor centering tool (27), push the wedge block (15) into the foot groove of the motor, and raise the rear end of the motor until the radial deviation between the motor half-coupling and the driven motor half-coupling reaches the allowable deviation value. Read the rear end elevation value of the motor from the height scale (16) on the wedge block, and then add a shim of the same thickness as the elevation value to each of the two rear corners of the rear end of the motor according to the elevation value.

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