Motor rotor anti-collision lifting fixture and method

Abstract

The present invention relates to the technical field of motor assembly, and more particularly to a motor rotor anti-collision hoisting fixture and method. The fixture comprises a main hook; a first rotating wheel provided on the main hook; a first connecting rod and a second connecting rod, both of which are hinged to the main hook at their top ends; a third connecting rod, whose top end is hinged to the bottom end of the second connecting rod; a fourth connecting rod, whose top end is hinged to the bottom end of the first connecting rod; the third and fourth connecting rods intersecting to form an "X" shape; a crossbar, whose ends are respectively hinged to the bottom ends of the third and fourth connecting rods; the crossbar is further provided with a second rotating wheel and a secondary hook; the third and fourth connecting rods are both provided with a clamping portion; a clamping block is rotatably provided at the bottom end of the clamping portion; a first cable, one end of which is fixed to the main hook and then sequentially wrapped around the second rotating wheel and the first rotating wheel, with the other end being a free end and provided with a cable hook; a rotor hook installed on the rotor; a second cable, one end of which is sleeved on the rotor hook and the other end of which is sleeved on the first cable. The present invention can effectively ensure the smoothness and work efficiency of rotor assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of motor assembly, and in particular to a motor rotor anti-collision hoisting fixture and method. Background Art

[0002] During the assembly process of large motors, the rotor is relatively heavy and difficult to move by manpower alone. Therefore, a corresponding lifting fixture is needed to lift and transfer the rotor. The existing related technologies have the following problems: the existing lifting fixture opens and closes quickly, which will cause a large impact on the rotor surface and cause damage to the rotor surface; the rotor is placed horizontally during storage, but needs to be placed vertically during installation. When the rotor is rotated during the lifting process, it shakes a lot, which can easily affect the assembly accuracy of the components on the rotor and is not conducive to placing the rotor into the stator; in addition, the traditional lifting method has a low assembly efficiency because it takes a lot of time to correct the position of the rotor or maintain the stability of the rotor. Therefore, a new lifting fixture and lifting method are needed to ensure the stability of the motor rotor during lifting and improve the assembly efficiency of the motor. Summary of the Invention

[0003] The present invention provides a motor rotor anti-collision hoisting fixture and method, which can effectively solve the problems in the background technology.

[0004] The present invention provides a motor rotor anti-collision lifting fixture, comprising:

[0005] The main hook is used to connect with the crane; the main hook is provided with a first rotating wheel;

[0006] The first connecting rod and the second connecting rod have their top ends hinged to the main hook;

[0007] a third connecting rod, the top end of which is hinged to the bottom end of the second connecting rod;

[0008] a fourth connecting rod, the top end of which is hinged to the bottom end of the first connecting rod;

[0009] The third link and the fourth link cross to form an "X" shape;

[0010] The crossbar has two ends hinged to the bottoms of the third connecting rod and the fourth connecting rod respectively; the crossbar is also provided with a second rotating wheel and a secondary hook;

[0011] The third connecting rod and the fourth connecting rod are both provided with a clamping portion extending below the crossbar; a clamping block is rotatably provided at the bottom end of the clamping portion;

[0012] The first cable has one end fixed on the main hook, and then is wrapped around the second rotating wheel and the first rotating wheel in sequence, with the other end being a free end and provided with a cable hook;

[0013] A rotor hook, mounted on the rotor;

[0014] One end of the second cable is put on the rotor hook, and the other end is put on the first cable.

[0015] Furthermore, the first rotating wheel and the second rotating wheel are not aligned in the vertical direction.

[0016] Furthermore, each clamping portion is hinged to the bottom end of the third connecting rod or the fourth connecting rod;

[0017] Each clamping part is also provided with a corresponding parallel connecting rod, one end of the parallel connecting rod is hinged to the clamping part, and the other end is hinged to the cross bar;

[0018] The parallel link is parallel to the bottom end of the corresponding third link or fourth link.

[0019] Furthermore, the crossbar is also provided with a sliding plate that slides up and down, and the second rotating wheel and the auxiliary hook are both provided on the sliding plate;

[0020] The bottom surface of the sliding plate and the top surfaces of the two clamping parts are both planar structures. When the rotor is clamped, the bottom surface of the sliding plate and the top surfaces of the two clamping parts are in contact with each other.

[0021] Furthermore, first inclined surfaces are provided at the bottoms of both ends of the sliding plate.

[0022] Furthermore, the clamping block is in a V-shaped structure with the opening facing inward.

[0023] Furthermore, an anti-slip layer is provided on the inner side of the clamping block.

[0024] Furthermore, the anti-slip layer is provided with a protrusion, the protrusion is provided with a second inclined surface, and the protrusion is located at the deepest part of the clamping block opening.

[0025] Furthermore, the clamping block is provided with a rotating rod, which passes through the clamping portion and extends to the other side, and a threaded section is provided at the extended end, and a nut is provided on the threaded section.

[0026] The present invention also provides a motor rotor anti-collision hoisting method, which is used for the above-mentioned motor rotor anti-collision hoisting fixture, comprising:

[0027] S1: Install the rotor hook on the rotor; pull the free end of the first cable to raise the second rotating wheel to the highest point; move the clamp above the rotor;

[0028] S2: Slowly release the free end of the first cable, causing the crossbar to slowly descend. The two clamping parts are tightened so that the clamping block clamps the rotor, and the center of gravity of the rotor is located between the rotor hook and the clamping block. Then, the cable hook of the first cable is hung on the auxiliary hook; and the two ends of the second cable are hung on the rotor hook and the first cable respectively.

[0029] S3: The fixture rises, driving the rotor to rise, and then moves the rotor above the stator;

[0030] S4: Pull upward the portion of the first cable between the second cable and the first rotating wheel to move the rotor hook upward, driving the rotor to rotate to a vertical state;

[0031] S5: Place an annular isolation plate in the stator, then lower the fixture to allow the rotor to enter the isolation plate until the clamp reaches the set lowest point;

[0032] S6: Pulling downward the portion of the first cable between the second cable and the first rotating wheel to raise the second rotating wheel to the highest position, thereby releasing the clamping of the rotor;

[0033] S7: Then remove the second cable and rotor hook, remove the clamp, and then pull out the isolation plate to complete the lifting operation.

[0034] The technical solution of the present invention can achieve the following technical effects:

[0035] This lifting fixture, utilizing multiple connecting rods and cables, enables quick and smooth lifting and transfer of the rotor. Lifting operations using this fixture effectively prevent significant impacts during the rotor's lifting and installation into the stator, while ensuring the rotor's stability during the lifting process. This significantly protects the rotor and improves assembly efficiency. Furthermore, the fixture's simple overall structure significantly reduces processing and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0037] Figure 1 This is a structural diagram of a first embodiment of the anti-collision hoisting fixture for a motor rotor in the present invention;

[0038] Figure 2 Schematic diagram of the first step of the hoisting operation of the motor rotor anti-collision hoisting fixture embodiment 1 of the present invention;

[0039] Figure 3 Schematic diagram of the second step of the hoisting operation of the first embodiment of the motor rotor anti-collision hoisting fixture of the present invention;

[0040] Figure 4 This is a schematic diagram of the third step of the hoisting operation of the first embodiment of the motor rotor anti-collision hoisting fixture of the present invention;

[0041] Figure 5This is a schematic diagram of the fourth step of the hoisting operation of the first embodiment of the motor rotor anti-collision hoisting fixture of the present invention;

[0042] Figure 6 This is a schematic diagram of the motor rotor anti-collision lifting fixture embodiment 2 of the present invention in a released state;

[0043] Figure 7 This is a schematic diagram of the clamping state of the second embodiment of the anti-collision lifting fixture for the motor rotor in the present invention;

[0044] Figure 8 This is a schematic diagram of the motor rotor anti-collision lifting fixture embodiment 3 of the present invention in a loosened state;

[0045] Figure 9 This is a schematic diagram of the clamping state of the third embodiment of the anti-collision lifting fixture for the motor rotor of the present invention;

[0046] Figure 10 It is a structural schematic diagram of the clamping part and the clamping block in the present invention.

[0047] Figure numerals: 01, rotor; 02, stator; 1, main hook; 2, first rotating wheel; 3, first connecting rod; 4, second connecting rod; 5, third connecting rod; 6, fourth connecting rod; 7, cross bar; 7a, sliding plate; 8, second rotating wheel; 9, auxiliary hook; 11, clamping part; 12, clamping block; 12a, protrusion; 12b, rotating rod; 12c, nut; 13, first cable; 14, rotor hook; 15, second cable; 16, parallel connecting rod; 17, isolation plate. DETAILED DESCRIPTION

[0048] The basic principles and main features of the technical solution of the present invention will be described below in conjunction with the accompanying drawings in the embodiments of the present invention. The following will be described more intuitively through one or more embodiments, and the described embodiments are only part of the embodiments of the present invention, not all embodiments.

[0049] In the description of the present invention, words indicating directions or positional relationships (such as up, down, left, right, etc.) are based on the directions shown in the drawings or some conventional positional relationships. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the features referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0050] Example 1

[0051] A motor rotor anti-collision lifting fixture, such as Figure 1As shown, it includes a connecting rod structure formed by a main hook 1, a first connecting rod 3, a second connecting rod 4, a third connecting rod 5, a fourth connecting rod 6, a cross bar 7 and a clamping part 11, and a control structure for the connecting rod structure and the rotor formed by a first rotating wheel 2, a second rotating wheel 8, an auxiliary hook 9, a first cable 13, a rotor hook 14 and a second cable 15.

[0052] The specific connection relationship between each component is as follows:

[0053] The main hook 1 includes a hook structure at the top and a connecting structure at the bottom, and the hook structure is used to connect to the crane; a first rotating wheel 2 is set on the side of the connecting structure of the main hook 1; a hole or a rod-shaped structure that can be used to install the first cable 13 is set on the main hook 1.

[0054] The top ends of the first connecting rod 3 and the second connecting rod 4 are hinged to the connecting structure of the main hook 1, and the hinge axis of the first connecting rod 3 and the main hook 1 and the hinge axis of the second connecting rod 4 and the main hook 1 are collinear.

[0055] The third connecting rod 5 has a top end hinged to the bottom end of the second connecting rod 4;

[0056] The fourth connecting rod 6 has a top end hinged to the bottom end of the first connecting rod 3;

[0057] The third connecting rod 5 and the fourth connecting rod 6 cross to form an "X" shape, so that both ends of the third connecting rod 5 and the fourth connecting rod 6 are respectively located on both sides of the clamp.

[0058] The two ends of the cross bar 7 are hinged to the bottom of the third connecting rod 5 and the fourth connecting rod 6 respectively; a second rotating wheel 8 is set on the side of the cross bar 7, and a downward auxiliary hook 9 is also set on the cross bar 7, and the auxiliary hook 9 is rotatable.

[0059] The third connecting rod 5 and the fourth connecting rod 6 are both provided with a clamping portion 11 extending to the bottom of the cross bar 7; the bottom ends of the two clamping portions 11 are rotatably provided with a clamping block 12, the two clamping blocks 12 are arranged opposite to each other, and the rotation axes of the two clamping blocks 12 are collinear.

[0060] One end of the first cable 13 is fixed on the main hook 1, and then starting from one end of the main hook 1, it is wrapped around the second rotary wheel 8 and the first rotary wheel 2 in sequence along the first cable 13. The other end is a free end and a cable hook is set. The free end will be held by the user or installed on the auxiliary hook 9 at different stages during the lifting process.

[0061] The rotor hook 14 has a hook structure at one end and a threaded rod structure at the other end. The rotor hook 14 is installed on the end that needs to face upward when the rotor 01 is installed into the stator 02 through the threaded rod structure. The threaded rod structure is longer than the mounting hole of the rotor 01, so that the threaded rod structure can extend to the bottom of the mounting hole.

[0062] One end of the second cable 15 is sleeved on the rotor hook 14 , and the other end is sleeved on the first cable 13 .

[0063] The motor rotor anti-collision lifting fixture is hoisted using the following method, including:

[0064] S1: Install the rotor hook 14 on the rotor 01. The rotor hook 14 should be screwed into the rotor 01 as far as possible, even if the end of the threaded rod structure extends into the bottom of the mounting hole of the rotor 01;

[0065] like Figure 2 As shown, the free end of the first cable 13 is now controlled by the user, who pulls the free end of the first cable 13 downward or away, causing the second rotating wheel 8 to rise to the highest point, driving the crossbar 7 to rise. When the crossbar rises, the connecting rod structure cooperates to separate the bottom ends of the third connecting rod 5 and the fourth connecting rod 6 from each other, and the distance between the two clamping blocks 12 reaches the maximum;

[0066] Move the clamp to above the rotor 01 and prepare to clamp the rotor 01.

[0067] S2: Slowly release the free end of the first cable 13. That is, the user slowly brings the free end of the first cable 13 closer to the first rotating wheel 2. The connecting rods and the cross bar 7 of the entire clamp will slowly descend under the influence of gravity. As the cross bar 7 and the connecting rods descend, the bottoms of the third connecting rod 5 and the fourth connecting rod 6 will move closer to each other, driving the distance between the two clamping parts 11 to tighten, and finally the two clamping blocks 12 clamp the rotor 01. When clamping, it is important to ensure that the center of gravity of the rotor 01 is located between the rotor hook 14 and the clamping blocks 12. That is, the clamping point of the two clamping blocks 12 can be biased towards the end of the rotor 01 that is located at the bottom when the rotor 01 is upright.

[0068] Then, the cable hook of the first cable 13 is hung on the auxiliary hook 9. The length of the first cable 13 needs to be specially set so that at this time (i.e., after the two clamping blocks 12 clamp the rotor 01 and the cable hook is hung on the auxiliary hook 9), the section of the first cable 13 between the auxiliary hook 9 and the first rotating wheel 2 can hang down below the auxiliary hook 9, as shown in FIG. Figure 3 As shown, at this time, first pull the hanging section of the first cable 13 by hand, then hang the two ends of the second cable 15 on the rotor hook 14 and the hanging section of the first cable 13 respectively, and then release the hand. The length of the second cable 15 also needs to be specially set so that the second cable 15 and the first cable 13 are both in a state of near tension. That is, the second cable 15 and the first cable 13 are not in a state of tension at this time, but as long as one end of the second cable 15 on the rotor hook 14 moves downward a little distance, the second cable 15 and the first cable 13 will immediately become tensioned.

[0069] At this point, the preparation for lifting the rotor 01 is completed. Since the second cable 15 and the first cable 13 are not in a tight state at this time, the rotor 01 is still placed stably on the ground and evenly stressed, without damaging the structure of the rotor 01.

[0070] S3: The clamp rises, driving the rotor 01 to rise. It only needs to rise a short distance. At this time, under the action of gravity, the end of the rotor 01 equipped with the rotor hook 14 will drop first, thereby pulling the second cable 15 and driving the first cable 13 to become taut. At this time, the rotor 01 will maintain this horizontal state and be lifted, avoiding collision and friction between the rotor 01 and the ground, which may cause damage to the rotor 01. After the rotor 01 is lifted, the rotor 01 can be moved above the stator 02.

[0071] S4: This step requires turning the horizontal rotor 01 into a vertical state. At this time, you only need to pull upwards the portion of the first cable 13 between the second cable 15 and the first rotating wheel 2, such as Figure 4 As shown, the rotor hook 14 moves upward, driving the rotor 01 to rotate to a vertical state; and the upper half of the first cable 13 between the second cable 15 and the first rotating wheel 2 will be in a relaxed state, that is, no upward pulling force will be generated on the cross bar 7. Therefore, each connecting rod part will still clamp the rotor 01 with the two clamping blocks 12 under the action of gravity.

[0072] S5: Place an annular isolation plate 17 in the stator 02. Of course, the isolation plate 17 can also be placed in the stator before the rotor 01 is lifted. The isolation plate 17 is usually made of a smooth and wear-resistant material such as PVC plastic to prevent friction and collision between the rotor 01 and the stator 02.

[0073] The clamp is then lowered to allow the rotor 01 to enter the isolation plate 17 until the clamping block 12 reaches the set lowest point.

[0074] S6: As Figure 5 As shown, the portion of the first cable 13 between the second cable 15 and the first rotating wheel 2 is pulled downward, so that the second rotating wheel 8 rises to the highest point to release the clamping of the rotor 01. It should be noted that once the first cable 13 is pulled downward, the clamping force of the two clamping blocks 12 on the rotor 01 will be reduced. Therefore, the first cable 13 should be pulled as slowly as possible in the initial stage of pulling. The movable pulley group composed of the first rotating wheel 2 and the second rotating wheel 8 can also increase the stroke of the first cable 13 at this time, so that the rotor 01 can be slowly dropped. At the same time, similarly to step S4, the portion of the first cable 13 closer to the second cable 15 can also be pulled upward to control the falling speed of the rotor 01.

[0075] S7: After the rotor 01 is completely inserted into the stator 02, the second cable 15 and the rotor hook 14 are removed, and the clamp is removed. Then, the isolation plate 17 is pulled out to complete the lifting operation.

[0076] It can be seen that the hoisting operation performed using this hoisting fixture can effectively avoid large collisions of the rotor 01 when it is lifted and installed into the stator 02, and can effectively ensure the stability of the rotor 01 during the hoisting process, thereby greatly protecting the rotor 01 and improving assembly efficiency.

[0077] It is preferred that the first rotor 2 and the second rotor 8 are not aligned in the vertical direction, so when performing step S6 (i.e., when the rotor 01 is placed in the stator 02), if Figure 5 As shown, after the first cable 13 is pulled, the force is transmitted to the second rotating wheel 8 through the first cable 13, and a torque is generated due to the misalignment of the second rotating wheel 8. Figure 5 For example, the clamp is caused to flip, so that the left end of the crossbar 7 in the figure moves upward first, so that the clamping block 12 on the right side will push the rotor 01 to stick to the isolation plate 17, so that the rotor 01, the isolation plate 17 and the inner wall of the stator 02 are tightly attached on the left side. At this time, the clamping block 12 on the left side has basically left the surface of the rotor 01, maintaining this state. Since the friction on only one side is not enough to support the rotor 01, the rotor 01 will begin to fall, but the falling speed will be very slow. Therefore, stop pulling the first cable 13 and maintain this state, so that the rotor 01 can slowly and steadily fall into the stator 02.

[0078] In this embodiment, if Figure 1 As shown, a certain rotation can be generated between the two clamping parts 11 and the third connecting rod 5 or the fourth connecting rod 6, specifically:

[0079] Each clamping portion 11 is hinged to the bottom end of the third connecting rod 5 or the fourth connecting rod 6;

[0080] Each clamping portion 11 is also provided with a corresponding parallel link 16, one end of the parallel link 16 is hinged to the clamping portion 11, and the other end is hinged to the crossbar 7;

[0081] One parallel link 16 is parallel to and has the same length as the portion of the bottom end of the third link 5 between the clamping portion 11 and the cross bar 7, and the other parallel link 16 is parallel to and has the same length as the portion of the bottom end of the fourth link 6 between the clamping portion 11 and the cross bar 7, thereby forming two parallelogram structures. Under this structure, the two clamping portions 11 can still open and clamp as the third link 5 and the fourth link 6 rotate, but the two clamping portions 11 can always remain parallel, thereby facilitating the clamping of the circular rotor 01.

[0082] Preferably, Figure 10As shown, the two clamping blocks 12 are in a V-shaped structure with the opening facing inward. When clamping the rotor 01, the extension direction of the V-shaped structure remains parallel to the axial direction of the rotor 01. The V-shaped structure and the clamped rotor 01 produce two sets of line contacts, which has a greater clamping force than the arc-shaped structure. Moreover, when the rotor 01 is lifted, the rotor 01 tends to fall under the influence of gravity, and the V-shaped structure is in a Figure 10 The shown lateral direction can better support the rotor 01 from below by line contact, and the rotor 01 will drive the clamping blocks 12, the clamping portion 11 and the crossbar 7 to produce a further downward trend, thereby making the two clamping blocks 12 clamp the ground tighter.

[0083] The inside of the clamping block 12 is preferably provided with an anti-slip layer made of a flexible material such as rubber to increase the friction between the clamping block 12 and the rotor 01. A protrusion 12a is preferably provided on the anti-slip layer, and the protrusion 12a has a second inclined surface. The protrusion 12a is located at the deepest part of the opening of the clamping block 12. When clamping the rotor 01, the portion of the second inclined surface on the protrusion 12a closest to the inside will contact the rotor 01. In this way, when the rotor 01 rotates to the vertical position, the second inclined surface on the protrusion 12a can play a force transmission role, transferring the weight of the rotor 01 to the clamping block 12, the clamping portion 11, and the crossbar 7, causing it to further descend, thereby making the two clamping blocks 12 clamp the ground more tightly.

[0084] Preferably, a rotating rod 12b is provided on clamping block 12. Rotating rod 12b passes through clamping portion 11 and extends to the other side. A threaded section is provided at the extended end, and a nut 12c is mounted on the threaded section. By adjusting the amount of screwing of nut 12c, the force with which nut 12c and clamping block 12 clamps clamping portion 11 can be controlled, thereby controlling the rotational sensitivity of clamping block 12. A washer, spring washer, or other component can also be installed between nut 12c and clamping portion 11 to further increase friction between clamping block 12 and clamping portion 11, preventing rotor 01 from rapidly tipping over.

[0085] Example 2

[0086] A motor rotor 01 anti-collision lifting fixture, such as Figures 6 and 7 As shown, unlike the first embodiment, the two clamping parts 11 do not adopt a hinged connection method, but one clamping part 11 is an integral structure with the third connecting rod 5, and the other clamping part 11 is an integral structure with the fourth connecting rod 6. Under this structure, the overall structure of the clamp is simpler, which can simplify the force transmission path and reduce assembly errors, thereby greatly improving the safety of clamping the rotor 01.

[0087] Example 3

[0088] A motor rotor 01 anti-collision lifting fixture, such as Figures 8 and 9As shown, unlike the first embodiment, the cross bar 7 is further provided with a sliding plate 7a that slides up and down. The sliding plate 7a realizes free sliding movement through components such as the slide bar. The second rotating wheel 8 and the auxiliary hook 9 are both provided on the sliding plate 7a. The bottom surface of the sliding plate 7a and the top surfaces of the two clamping parts 11 are both planar structures. When lifting the rotor, the bottom surface of the sliding plate 7a and the top surfaces of the two clamping parts 11 are in contact with each other.

[0089] When the clamp descends, since each connecting rod mainly relies on gravity, the additional sliding plate 7a does not affect the operation of other components, and the clamp can clamp the rotor 01 normally;

[0090] When the rotor 01 is lifted, the second cable 15 is in a taut state. That is, the rotor 01 pulls the secondary hook 9 and the sliding plate 7a downward through the second cable 15 and the first cable 13, so that the bottom surface of the sliding plate 7a and the top surfaces of the two clamping parts 11 are tightly fitted together. In this way, the clamping parts 11 can no longer rotate, thereby ensuring that even if the clamping parts 11 are pulled or hit during the lifting process of the rotor 01, the rotor 01 will not fall.

[0091] When the rotor 01 is released, the first cable 13 is pulled downward, which drives the second rotating wheel 8 and the sliding plate 7a to rise first. Then, the sliding plate 7a and the cross bar 7 are completely fitted together and then rise together to complete the release action.

[0092] A first inclined surface is preferably provided at the bottom of both ends of the sliding plate 7a. In this way, when the clamp descends and the clamping part 11 rotates, even if the sliding plate 7a descends first, since there is no additional pulling force to pull the sliding plate 7a downward at this time, the first inclined surface can be used to push the sliding plate 7a upward when the clamping part 11 rotates, thereby preventing the sliding plate 7a from affecting the rotation of the clamping part 11.

[0093] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A motor rotor anti-collision lifting fixture, characterized in that: include: A main hook (1) is used for connecting to a crane; the main hook (1) is provided with a first rotating wheel (2); The top ends of the first connecting rod (3) and the second connecting rod (4) are hinged to the main hook (1); A third connecting rod (5), the top end of which is hinged to the bottom end of the second connecting rod (4); a fourth connecting rod (6), the top end of which is hinged to the bottom end of the first connecting rod (3); The third connecting rod (5) and the fourth connecting rod (6) cross to form an "X" shape; A crossbar (7), both ends of which are hinged to the bottoms of the third connecting rod (5) and the fourth connecting rod (6) respectively; the crossbar (7) is also provided with a second rotating wheel (8) and a secondary hook (9); The third connecting rod (5) and the fourth connecting rod (6) are both provided with a clamping portion (11) extending below the crossbar (7); a clamping block (12) is rotatably provided at the bottom end of the clamping portion (11); A first cable (13) has one end fixed on the main hook (1), and then sequentially wrapped around the second rotating wheel (8) and the first rotating wheel (2), with the other end being a free end and provided with a cable hook; a rotor hook (14), mounted on the rotor; A second cable (15) has one end sleeved on the rotor hook (14) and the other end sleeved on the first cable (13).

2. The motor rotor anti-collision lifting fixture according to claim 1, characterized in that: The first rotating wheel (2) and the second rotating wheel (8) are not aligned in the vertical direction.

3. The motor rotor anti-collision lifting fixture according to claim 1, characterized in that: Each of the clamping portions (11) is hinged to the bottom end of the third connecting rod (5) or the fourth connecting rod (6); Each of the clamping parts (11) is also provided with a corresponding parallel connecting rod (16), one end of the parallel connecting rod (16) is hinged to the clamping part (11), and the other end is hinged to the cross bar (7); The parallel connecting rod (16) is parallel to the bottom end of the corresponding third connecting rod (5) or the fourth connecting rod (6).

4. The motor rotor anti-collision hoisting fixture according to claim 3, characterized in that: The crossbar (7) is further provided with a sliding plate (7a) that slides up and down, and the second rotating wheel (8) and the auxiliary hook (9) are both provided on the sliding plate (7a); The bottom surface of the sliding plate (7a) and the top surfaces of the two clamping parts (11) are both planar structures. When the rotor is clamped, the bottom surface of the sliding plate (7a) and the top surfaces of the two clamping parts (11) are in contact with each other.

5. The motor rotor anti-collision hoisting fixture according to claim 4, characterized in that: First inclined surfaces are provided at the bottoms of both ends of the sliding plate (7a).

6. The motor rotor anti-collision hoisting fixture according to claim 1, characterized in that: The clamping block (12) is in a V-shaped structure with its opening facing inward.

7. The motor rotor anti-collision hoisting fixture according to claim 6, characterized in that: An anti-slip layer is provided on the inner side of the clamping block (12).

8. The motor rotor anti-collision hoisting fixture according to claim 7, characterized in that: The anti-slip layer is provided with a convex block (12a), the convex block (12a) is provided with a second inclined surface, and the convex block (12a) is located at the deepest part of the opening of the clamping block (12).

9. The motor rotor anti-collision hoisting fixture according to claim 1, characterized in that: The clamping block (12) is provided with a rotating rod (12b), which passes through the clamping portion (11) and extends to the other side, and a threaded section is provided at the extended end, and a nut (12c) is provided on the threaded section.

10. A motor rotor anti-collision hoisting method, characterized in that: The anti-collision hoisting fixture for a motor rotor according to any one of claims 1 to 9 comprises: S1: Install the rotor hook (14) on the rotor; pull the free end of the first cable (13) to raise the second rotating wheel (8) to the highest point; move the clamp to the top of the rotor; S2: slowly release the free end of the first cable (13), so that the crossbar (7) slowly descends, and the two clamping parts (11) are tightened so that the clamping block (12) clamps the rotor, and the center of gravity of the rotor is located between the rotor hook (14) and the clamping block (12); then the cable hook of the first cable (13) is hung on the auxiliary hook (9); and the two ends of the second cable (15) are hung on the rotor hook (14) and the first cable (13) respectively; S3: The fixture rises, driving the rotor to rise, and then moves the rotor above the stator; S4: Pull upward the portion of the first cable (13) between the second cable (15) and the first rotating wheel (2), so that the rotor hook (14) moves upward, driving the rotor to rotate to a vertical state; S5: Place an annular isolation plate (17) in the stator, and then lower the fixture to allow the rotor to enter the isolation plate (17) until the clamp (12) reaches the set lowest point; S6: Pulling downward the portion of the first cable (13) between the second cable (15) and the first rotating wheel (2) to raise the second rotating wheel (8) to the highest position, thereby releasing the clamping of the rotor; S7: After that, the second cable (15) and the rotor hook (14) are removed, and the clamp is removed, and then the isolation plate (17) is pulled out to complete the lifting operation.

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