Internal expansion type stator transfer tool

Abstract

The internal expansion type stator transfer tool comprises a sliding cylinder and a pull rod which are connected in a sliding mode, a plurality of connecting rod assemblies are evenly arranged at the bottom of the pull rod in the circumferential direction, a supporting plate is installed on the outer side of each connecting rod assembly, and the supporting plates are used for abutting against the inner wall of a stator; the pull rod is pulled to vertically move along the sliding cylinder, the connecting rod assemblies are driven to move, and the supporting plates are driven to move in the direction close to or away from the pull rod. The sliding barrel, the pull rod, the connecting rod assemblies and the supporting plates are matched, the pull rod is pulled to vertically move along the sliding barrel, the connecting rod assemblies are driven to move, and therefore the supporting plates are driven to be folded inwards or expanded outwards, a stator is expanded from the inside, and the stator can be lifted only by lifting the pull rod upwards in the transferring process. And damage such as bumping and impacting to the stator is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of motor stator transportation, in particular to an internal expansion type stator transportation tooling. Background Art

[0002] The stator of the motor is an important part of the motor. During the production process of the motor, the stator needs to be hoisted to the corresponding production line for assembly and electrical performance testing. At present, large stators are generally suspended by large suspension equipment, while small stators cannot be transported by large suspension equipment and can only be moved manually. Due to the special and complex structure of the stator and its special taboo against bumps and collisions, the stator handling in the production process is laborious and prone to many quality risks. Utility Model Content

[0003] The utility model provides a method to solve the problems in the prior art that manual handling of the stator is laborious and prone to collision and impact that may cause damage to the stator.

[0004] The technical solution of the utility model is achieved in this way:

[0005] The utility model provides an internal expansion type stator transfer tooling, comprising a sliding cylinder and a pull rod connected in a sliding manner, wherein a plurality of connecting rod assemblies are evenly arranged along the circumference at the bottom of the pull rod, and a support plate is installed on the outer side of each connecting rod assembly, and the support plate is used to abut against the inner wall of the stator; by pulling the pull rod to move vertically along the sliding cylinder, a plurality of the connecting rod assemblies are driven to move, thereby driving a plurality of the support plates to move toward or away from the pull rod.

[0006] The utility model cooperates with a slide cylinder, a pull rod, a plurality of connecting rod assemblies and a support plate by arranging the pull rod to move vertically along the slide cylinder, thereby driving the plurality of connecting rod assemblies to move, thereby driving the plurality of support plates to retract inwardly or expand outwardly, thereby achieving internal expansion of the stator. During transportation, the stator can be lifted by simply lifting the pull rod upwards, without causing damage to the stator such as bumps and collisions.

[0007] Preferably, the connecting rod assembly includes a first connecting rod and a second connecting rod arranged in parallel. The outer ends of the first connecting rod and the second connecting rod are respectively hinged to the support plate. A plurality of connecting plates corresponding to the connecting rod assembly are vertically installed at the bottom of the sliding cylinder. The middle of the first connecting rod and the inner end of the second connecting rod are respectively hinged to the connecting plates. The inner end of the first connecting rod is connected to the pull rod. Through the arrangement of the first connecting rod and the second connecting rod, it can be ensured that the support plate always remains vertical during the process of inward contraction or outward expansion, ensuring that the outer wall of the support plate fits closely with the inner wall of the stator. When the pull rod moves upward relative to the sliding cylinder, it will drive the inner end of the first connecting rod to rotate, thereby driving the first connecting rod and the second connecting rod to rotate synchronously, and further driving a plurality of support plates to expand outward simultaneously. When it is necessary to take out the transfer tooling from the inside of the stator, only need to press down the pull rod to drive a plurality of support plates to contract inward simultaneously, and then the transfer tooling can be taken out.

[0008] Further, a first limit ring and a second limit ring are sleeved on the outside of the pull rod at intervals along the axial direction. The inner end of the first connecting rod is movably embedded between the first limit ring and the second limit ring. When the pull rod moves up and down, it drives the first limit ring and the second limit ring to move up and down simultaneously, thereby driving the outer end of the first connecting rod to rotate around the hinge at its middle part.

[0009] Further, a bottom plate is connected to the bottom of the connecting plate. The bottom plate and the bottom of the sliding cylinder are connected by a plurality of the connecting plates. A positioning hole coaxial with the pull rod is provided on the top surface of the middle of the bottom plate. A compression spring is sleeved on the outside of the bottom end of the pull rod. The two ends of the compression spring are respectively abutted against the second limit ring and the bottom plate. By sleeving a compression spring on the outside of the bottom end of the pull rod, after the transfer tooling is placed inside the stator, it can automatically drive the pull rod to move upward, thereby providing a pre-tightening force for the support plate and facilitating the subsequent direct lifting of the stator. By providing a positioning hole in the middle of the bottom plate that matches the bottom end of the pull rod, it can be ensured that the compression spring always sleeved on the outside of the pull rod during the up and down movement of the pull rod.

[0010] Preferably, the outer wall of the support plate is an arc surface that fits the inner wall of the stator, further improving the tightness of the fit between the outer wall of the support plate and the inner wall of the stator.

[0011] Preferably, a protective pad made of a non-metallic insulating soft material is provided on the outer wall of the support plate. On the one hand, it can prevent direct rigid contact between the outer wall of the support plate and the inner wall of the stator from causing damage. On the other hand, its insulation facilitates subsequent direct lifting of the stator by the pull rod for electrical performance testing.

[0012] Preferably, first handles are provided on both sides of the top of the pull rod for pulling the pull rod to move vertically along the sliding cylinder, facilitating the operation of the handling personnel, and the stator can be lifted by the first handles.

[0013] Further, a horizontal pin shaft is provided on the outer wall of the top of the pull rod. A vertically extending hole groove that slidably mates with the pin shaft is formed in the side wall of the top of the sliding cylinder. A transition ring is slidably sleeved outside the sliding cylinder. The first handle is mounted on the transition ring, and an assembly hole mating with the pin shaft is formed in the transition ring. The pin shaft passes through the hole groove and is fixedly connected to the transition ring through the assembly hole. The function of the hole groove is twofold. On the one hand, it cooperates with the pin shaft and the transition ring to facilitate driving the pull rod inside the sliding cylinder to move up and down through the first handle. On the other hand, it can restrict the extreme positions of the up and down movement of the pull rod.

[0014] Further, second handles are fixedly mounted on the outer walls on both sides of the sliding cylinder. The second handles are located below the first handle and act as a fulcrum, facilitating driving the pull rod to move downward by simultaneously holding the first handle and the second handle with both hands.

[0015] Preferably, a lifting ring is provided at the top of the pull rod, facilitating lifting the combined body of the transfer tooling and the stator. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following-described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic internal structure diagram of the stator transfer tooling when the support plate is in the retracted state in the embodiment of the present invention;

[0018] Figure 2 It is a schematic internal structure diagram of the stator transfer tooling when the support plate is in the expanded state in the embodiment of the present invention;

[0019] Figure 3 It is a schematic assembly structure diagram of the transition ring, the sliding cylinder and the pull rod in the embodiment of the present invention;

[0020] In the figure: 1. Sliding cylinder; 2. Pull rod; 3. Support plate; 4. Stator; 5. First connecting rod; 6. Second connecting rod; 7. Connecting plate; 8. First limiting ring; 9. Second limiting ring; 10. Bottom plate; 11. Positioning hole; 12. Compression spring; 13. Protection pad; 14. First handle; 15. Pin shaft; 16. Hole groove; 17. Transition ring; 18. Assembly hole; 19. Second handle; 20. Lifting ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The technical solution of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0022] Referring to Figures 1 to 3 , the embodiment of the present utility model provides an internal expansion type stator transfer tooling, which includes a sliding cylinder 1 and a pull rod 2 connected in a sliding manner. A plurality of connecting rod assemblies (in this embodiment, a total of 3 connecting rod assemblies are provided, and the specific quantity can be flexibly adjusted according to actual situations) are evenly arranged along the circumference at the bottom of the pull rod 2. A support plate 3 is installed on the outer side of each connecting rod assembly, and the support plate 3 is used to abut against the inner wall of the stator 4; by pulling the pull rod 2 to move vertically along the sliding cylinder 1, the 3 connecting rod assemblies are driven to move, and the 3 support plates 3 are driven to move towards or away from the pull rod 2.

[0023] By arranging the sliding cylinder 1, the pull rod 2, the 3 connecting rod assemblies and the support plate 3 in cooperation, and pulling the pull rod 2 to move vertically along the sliding cylinder 1 to drive the 3 connecting rod assemblies to move, the 3 support plates 3 are driven to retract inward or expand outward, so as to realize expanding and tightening the stator 4 from the inside. During transportation, only by lifting the pull rod 2 upward can the stator 4 be lifted, and the stator 4 will not be damaged by knocking, impact, etc.

[0024] Please continue to refer to Figure 1 、 Figure 2 , preferably, the connecting rod assembly includes a first connecting rod 5 and a second connecting rod 6 arranged in parallel (the first connecting rod 5 and the second connecting rod 6 form a parallelogram connecting rod mechanism). The first connecting rod 5 is located above the second connecting rod 6. The outer ends of the first connecting rod 5 and the second connecting rod 6 are respectively hinged to the support plate 3; 3 connecting plates 7 corresponding to the connecting rod assemblies are vertically installed at the bottom of the sliding cylinder 1. The middle part of the first connecting rod 5 and the inner end part of the second connecting rod 6 are respectively hinged to the connecting plate 7, and the inner end part of the first connecting rod 5 is connected to the pull rod 2; through the arrangement of the first connecting rod 5 and the second connecting rod 6, it can be ensured that the support plate 3 always remains in the vertical direction during the process of retracting inward or expanding outward, ensuring that the outer wall of the support plate 3 fits tightly with the inner wall of the stator 4; when the pull rod 2 moves upward relative to the sliding cylinder 1, the inner end part of the first connecting rod 5 will be driven to rotate, thereby driving the first connecting rod 5 and the second connecting rod 6 to rotate synchronously, and further driving the 3 support plates 3 to expand outward simultaneously; when it is necessary to take out the transfer tooling from the inside of the stator 4, only by pressing down the pull rod 2 to drive the 3 support plates 3 to contract inward simultaneously, the transfer tooling can be taken out.

[0025] Please continue to refer to Figure 1 、 Figure 2, Further, a first limiting ring 8 and a second limiting ring 9 are sleeved on the outside of the pull rod 2 at intervals along the axial direction. The inner end of the first connecting rod 5 is movably embedded between the first limiting ring 8 and the second limiting ring 9. When the pull rod 2 moves up and down, it drives the first limiting ring 8 and the second limiting ring 9 to move up and down simultaneously, thereby driving the outer end of the first connecting rod 5 to rotate around the hinge at its middle part.

[0026] Please continue to refer to Figure 1 , Figure 2 , Further, a bottom plate 10 is connected to the bottom of the connecting plate 7. The bottom plate 10 and the bottom of the sliding cylinder 1 are connected by three connecting plates 7. A positioning hole 11 coaxial with the pull rod 2 is provided on the top surface of the middle part of the bottom plate 10. A compression spring 12 is sleeved on the outside of the bottom end of the pull rod 2. The two ends of the compression spring 12 are respectively abutted against the second limiting ring 9 and the bottom plate 10. By sleeving a compression spring 12 on the outside of the bottom end of the pull rod 2, after the transfer tooling is placed inside the stator 4, the pull rod 2 can be automatically driven to move upward, thereby providing a pre-tightening force for the support plate 3 and facilitating the subsequent direct lifting of the stator 4. By providing a positioning hole 11 matching the bottom end of the pull rod 2 in the middle of the bottom plate 10, it can be ensured that the compression spring 12 is always sleeved on the outside of the pull rod 2 during the up and down movement of the pull rod 2.

[0027] Preferably, the outer wall of the support plate 3 is an arc surface that fits the inner wall of the stator 4, further improving the tightness of the fit between the outer wall of the support plate 3 and the inner wall of the stator 4.

[0028] Please continue to refer to Figure 1 , Figure 2 , Preferably, a protective pad 13 made of a non-metallic insulating soft material is provided on the outer wall of the support plate 3. On the one hand, it can prevent the outer wall of the support plate 3 from directly and rigidly abutting against the inner wall of the stator 4 and causing damage. On the other hand, its insulation facilitates the subsequent direct lifting of the stator 4 through the pull rod 2 for electrical performance testing.

[0029] In this embodiment, the protective pad 13 can be made of polyurethane resistant to 200 degrees Celsius, enabling electrical performance testing at 5000 volts.

[0030] The protective pad 13 can be fixed to the outer wall of the support plate 3 by screws. The support plate 3 is provided with a plurality of screw holes, and the protective pad 13 is provided with a plurality of through holes corresponding to the screw holes. The screws can be directly passed through the through holes on the protective pad 13 and screwed into the screw holes on the support plate 3, and it is necessary to ensure that the tail end of the screw sinks into the through hole of the protective pad 13 by a certain distance to avoid the tail end of the screw abutting against the inner wall of the stator 4.

[0031] Please continue to refer to Figure 1 , Figure 2, preferably, on both sides of the top of the pull rod 2, there are first handles 14 for pulling the pull rod 2 to move vertically along the sliding cylinder 1, which is convenient for the handling personnel to operate, and the stator 4 can be lifted through the first handles 14.

[0032] Please continue to refer to Figure 3 , further, on the outer wall of the top of the pull rod 2, there is a horizontal pin shaft 15. On the top side wall of the sliding cylinder 1, there is a hole groove 16 that slidably cooperates with the pin shaft 15 in the vertical direction. An intermediate ring 17 is slidably sleeved outside the sliding cylinder 1. The first handle 14 is installed on the intermediate ring 17, and an assembly hole 18 that matches the pin shaft 15 is provided on the intermediate ring 17. The pin shaft 15 passes through the hole groove 16 and is fixedly connected to the intermediate ring 17 through the assembly hole 18. On the one hand, the function of the hole groove 16 is to cooperate with the pin shaft 15 and the intermediate ring 17 to facilitate driving the pull rod 2 inside the sliding cylinder 1 to move up and down through the first handle 14. On the other hand, it can restrict the extreme positions of the up and down movement of the pull rod 2.

[0033] Please continue to refer to Figure 1 , Figure 2 , further, on both outer walls of the sliding cylinder 1, there are second handles 19 fixedly installed. The second handles 19 are located below the first handles 14. The second handles 19 play the role of a fulcrum, which is convenient for driving the pull rod 2 to move downward by simultaneously holding the first handles 14 and the second handles 19 with both hands.

[0034] In this embodiment, the first handle 14 is longer than the second handle 19. On the one hand, it is convenient for operation, and on the other hand, it is convenient for error - proof identification.

[0035] Please continue to refer to Figure 1 , Figure 2 , preferably, at the top of the pull rod 2, there is a lifting ring 20, and the combination of the transfer tooling and the stator 4 can be hoisted and transported by a "crane", which is convenient for subsequent appearance inspection and electrical performance testing of the stator 4, etc.

[0036] The usage method of the transfer tooling in this embodiment is as follows:

[0037] In the first step, pinch the first handles 14 and the second handles 19 simultaneously with both hands (the left hand and the right hand respectively pinch the first handles 14 and the second handles 19 on both sides at the same time). The first handle 14 drives the pull rod 2 to move downward along the sliding cylinder 1 through the intermediate ring 17 and the pin shaft 15. The pull rod 2 drives the first link 5 to rotate through the first limit ring 8 and the second limit ring 9, and the first link 5 drives the second link 6 to rotate, thereby driving the three support plates 3 to simultaneously retract inward;

[0038] In the second step, when the three support plates 3 are retracted (as Figure 1At this time, the distance between the first handle 14 and the second handle 19 is 36 mm, and the outer diameter formed after the three support plates 3 are retracted is 151 mm. Insert the transfer tooling into the inner hole of the stator 4, then release both hands. Under the action of the compression spring 12, the pull rod 2 moves upward along the sliding cylinder 1, driving the three support plates 3 to expand outward simultaneously and tightly adhere to the inner wall of the stator 4 (as Figure 2 shown. At this time, the distance between the first handle 14 and the second handle 19 is 45 mm, and the outer diameter formed after the three support plates 3 are retracted is 157 mm, slightly larger than the inner diameter 156 mm of the stator 4);

[0039] In the third step, hold the first handle 14 with both hands and lift the combination of the transfer tooling and the stator 4 upward, then the stator 4 can be transported to the designated place;

[0040] In the fourth step, when the stator 4 reaches the designated position, then pinch the first handle 14 and the second handle 19 simultaneously with both hands, drive the three support plates 3 to retract inward simultaneously, and finally take out the transfer tooling from the inner hole of the stator 4.

[0041] Through the transfer tooling of the present utility model, the stator 4 can be easily grasped and moved anywhere, making the movement of the stator 4 more convenient and labor-saving; and the tooling will not bump the stator 4 during use, nor is it necessary to touch the stator 4 by hand, thus avoiding the problem of reducing the insulation performance due to the damage of the insulating paint on the surface of the stator 4 caused by bumping and the problem of rusting of the stator 4 caused by hand contact; and since the outer wall of the support plate 3 of the tooling is provided with a polyurethane protection pad 13 resistant to 200 degrees Celsius and the top of the pull rod 2 is equipped with a lifting ring 20, the electrical performance of the stator 4 can be detected in the "hot state" (the stator 4 needs to be coated and impregnated at high temperature).

[0042] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An internal expansion stator transfer tool, characterized in that: It comprises a slide cylinder (1) and a pull rod (2) which are slidably connected, wherein a plurality of connecting rod assemblies are evenly arranged along the circumference at the bottom of the pull rod (2), and a support plate (3) is installed on the outer side of each connecting rod assembly, and the support plate (3) is used to abut against the inner wall of the stator (4); by pulling the pull rod (2) to move vertically along the slide cylinder (1), a plurality of the connecting rod assemblies are driven to move, thereby driving a plurality of the support plates (3) to move in a direction close to or away from the pull rod (2).

2. The internal expansion stator transfer tool as claimed in claim 1, characterized in that: The connecting rod assembly comprises a first connecting rod (5) and a second connecting rod (6) which are arranged in parallel, and the outer ends of the first connecting rod (5) and the second connecting rod (6) are respectively hinged to the support plate (3); a plurality of connecting plates (7) corresponding to the connecting rod assembly are vertically installed at the bottom of the slide cylinder (1), and the middle part of the first connecting rod (5) and the inner end of the second connecting rod (6) are respectively hinged to the connecting plate (7), and the inner end of the first connecting rod (5) is connected to the pull rod (2).

3. The internal expansion stator transfer tool as claimed in claim 2, characterized in that: The outside of the pull rod (2) is sleeved with a first limiting ring (8) and a second limiting ring (9) at intervals along the axial direction, and the inner end of the first connecting rod (5) is movably embedded between the first limiting ring (8) and the second limiting ring (9).

4. The internal expansion stator transfer tool as claimed in claim 3, characterized in that: The bottom of the connecting plate (7) is connected to a bottom plate (10), and the bottom plate (10) is connected to the bottom of the slide tube (1) via a plurality of connecting plates (7); a positioning hole (11) coaxial with the pull rod (2) is provided on the middle top surface of the bottom plate (10), and a compression spring (12) is sleeved on the outside of the bottom end of the pull rod (2), and the two ends of the compression spring (12) are respectively in contact with the second limiting ring (9) and the bottom plate (10).

5. The internal expansion stator transfer tool as claimed in claim 1, characterized in that: The outer wall of the support plate (3) is a curved surface that fits the inner wall of the stator (4).

6. The internal expansion stator transfer tool as claimed in claim 1, characterized in that: The outer wall of the support plate (3) is provided with a protective pad (13) made of non-metallic insulating soft material.

7. The internal expansion stator transfer tool as claimed in claim 1, characterized in that: The top two sides of the pull rod (2) are provided with first handles (14) for pulling the pull rod (2) to move vertically along the slide cylinder (1).

8. The internal expansion stator transfer tool as claimed in claim 7, characterized in that: The top outer wall of the pull rod (2) is provided with a horizontal pin shaft (15), the top side wall of the slide cylinder (1) is vertically provided with a hole groove (16) that slides with the pin shaft (15), the outer sliding sleeve of the slide cylinder (1) is provided with a transition ring (17), the first handle (14) is installed on the transition ring (17), and the transition ring (17) is provided with an assembly hole (18) that matches the pin shaft (15), and the pin shaft (15) passes through the hole groove (16) and is fixedly connected to the transition ring (17) through the assembly hole (18).

9. The internal expansion stator transfer tool as claimed in claim 7, characterized in that: Second handles (19) are fixedly mounted on the outer walls of both sides of the slide cylinder (1), and the second handles (19) are located below the first handle (14).

10. The internal expansion stator transfer tool as claimed in claim 1, characterized in that: A lifting ring (20) is provided on the top of the pull rod (2).

Images