Lifting appliance

Abstract

The utility model relates to the technical field of motors, in particular to a lifting appliance. The lifting appliance is used for lifting a motor stator, the motor stator comprises a stator core and a stator winding arranged on the stator core, lifting grooves are formed in the two opposite sides of the stator core in the first direction respectively, the lifting appliance comprises a clamping part and a lifting part, the clamping part comprises two clamping rods which are oppositely arranged in the first direction at intervals and a connecting rod for connecting the two clamping rods, and the lifting part comprises a lifting part and a lifting part; the two clamping rods are respectively clamped in the two hoisting grooves of the stator iron core; and the hoisting part is connected with the clamping part, and the hoisting part is used for being connected with hoisting equipment. The lifting appliance provided by the utility model can prevent the stator winding from being damaged in the assembling process, so that the potential safety hazard is eliminated.

Description

Technical Field

[0001] The present application relates to the field of motor technology, and in particular to a sling. Background Art

[0002] A traction motor is an electric motor used to propel a vehicle, typically used to power transportation such as railways, subways, and trams. It typically consists of a stator and a rotor. When AC current is applied to the stator, it generates a magnetic field, which in turn causes the rotor to rotate, driving the vehicle.

[0003] In related technologies, the stator usually includes a machine base, a stator core and a stator winding arranged on the stator core. When assembling the stator, a hook is usually used to hang on the lead wire of the stator winding, and then the hook is lifted by a lifting device, and then the stator core and the stator winding are lifted to assemble the stator core and the stator winding into the machine base.

[0004] However, the above-mentioned assembly method can easily cause the root of the lead wire of the stator winding to tear, resulting in damage to the insulation structure at the root of the lead wire, thereby creating a safety hazard. Utility Model Content

[0005] The present application provides a sling to solve the problem that the current assembly method easily causes the root of the lead wire of the stator winding to tear, resulting in damage to the insulation structure of the root of the lead wire, and thus causing safety hazards.

[0006] In order to achieve the above objectives, the technical solutions of this application are as follows:

[0007] The present application provides a lifting device for lifting a motor stator, wherein the motor stator includes a stator core and a stator winding arranged on the stator core, and lifting grooves are respectively provided on opposite sides of the stator core along a first direction. The lifting device includes: a clamping portion, including two clamping rods arranged opposite to and spaced apart along the first direction and a connecting rod connecting the two clamping rods, the two clamping rods are respectively clamped in the two lifting grooves of the stator core; a lifting portion, the lifting portion is connected to the clamping portion, and the lifting portion is used to be connected to a lifting device.

[0008] In a possible implementation, in the spreader provided in the present application, at least one of the two clamping rods is movable relative to the connecting rod along a first direction, so that the distance between the two clamping rods is adjustable.

[0009] In a possible implementation, the sling provided in the present application has two connecting rods, which are respectively arranged at the two ends of the two clamping rods along the second direction.

[0010] In one possible implementation, the sling provided in the present application comprises two clamping rods including a first clamping rod and a second clamping rod, wherein both ends of the first clamping rod are respectively fixedly connected to the two connecting rods; the second clamping rod is movable along a first direction relative to the two connecting rods.

[0011] In one possible implementation, in the sling provided in the present application, each connecting rod includes a first end and a second end opposite to each other along a first direction, and the first ends of the two connecting rods are respectively welded or bolted to the two ends of the first clamping rod; the second ends of the two connecting rods are respectively passed through the second clamping rod.

[0012] In one possible implementation, the sling provided by the present application has adjustment threads on the second ends of the two connecting rods, and the clamping part also includes: an adjustment handle, two adjustment handles corresponding one to one to the connecting rods, the adjustment handles having adjustment holes, the inner walls of the adjustment holes being provided with mating threads, the second ends of each connecting rod being passed through the adjustment holes, the adjustment handles being mated with the connecting rod threads, and the distance between the first clamping rod and the second clamping rod being adjusted when the adjustment handles are rotated.

[0013] In a possible implementation, the cross-sectional shape of the lifting groove of the sling provided in the present application is at least one of V-shaped, U-shaped, and arc-shaped; and the cross-sectional shape of the clamping rod is adapted to the cross-sectional shape of the lifting groove.

[0014] In one possible implementation, the lifting device provided in the present application has an inner wall of the lifting groove including a first side wall and a second side wall, both of which are planes, and a first angle is formed between the first side wall and the second side wall; the clamping rod includes a first side plate and a second side plate, and a second angle is formed between the first side plate and the second side plate, and the first angle is equal to the second angle.

[0015] In a possible implementation, in the sling provided in the present application, the first angle has a value range of 60°-120°.

[0016] In a possible implementation, the clamping portion of the sling provided in the present application further includes: a lifting rod, one end of which is movably connected to one of the two connecting rods, and the other end of which is hooked and engaged with the other of the two connecting rods.

[0017] In one possible implementation, the sling provided in the present application has a connecting nut fixedly provided on one of the two connecting rods, the connecting nut has a threaded hole, and a connecting thread is provided on one end of the lifting rod facing the connecting nut, and the lifting rod cooperates with the connecting nut thread.

[0018] In one possible implementation, the lifting device provided in the present application, the lifting part includes: a first lifting rod, one end of the first lifting rod is connected to one of the connecting rods, and the other end extends along the second direction and in a direction away from the other connecting rod; a second lifting rod, the second lifting rod is fixedly connected to the first lifting rod, and the second lifting rod extends along a third direction, and the first direction, the second direction and the third direction are perpendicular to each other; a lifting ring, a lifting ring is provided on the second lifting rod to connect to the lifting equipment.

[0019] In a possible implementation, in the lifting device provided in the present application, the position of the lifting ring on the second lifting rod is adjustable to adjust the verticality of the motor stator during the lifting process.

[0020] In a possible implementation, in the sling provided in the present application, a plurality of assembly holes arranged at intervals along a third direction are provided on the second lifting rod, and the lifting ring is provided on any one of the plurality of assembly holes.

[0021] In one possible implementation, the sling provided in the present application is provided with a connecting plate at one end of the first lifting rod facing the connecting rod, the connecting plate and the connecting rod are stacked, a first connecting hole is provided on the connecting plate, and a second connecting hole is provided on the connecting rod. The first lifting rod and the connecting rod are connected by fasteners that pass through the first connecting hole and the second connecting hole in sequence.

[0022] The sling provided in the present application is used for hoisting the stator of a motor. The motor stator includes a stator core and a stator winding arranged on the stator core. The stator core has hoisting grooves on opposite sides along the first direction. The sling includes a clamping portion and a hoisting portion. The clamping portion is provided with a clamping rod that matches the hoisting groove. Two clamping rods arranged at intervals correspond to the two hoisting grooves one by one. The hoisting grooves are clamped and fixed together by the two clamping rods. The two clamping rods are connected by a connecting rod. The hoisting portion is connected to the clamping portion, and the hoisting portion is used to connect to a lifting device to achieve the hoisting of the motor stator. With such an arrangement, the hoisting grooves are clamped and fixed by the two clamping rods, and then the hoisting portion is lifted by the lifting device to achieve the hoisting of the motor stator. This can prevent the stator winding from being damaged during the assembly process, thereby eliminating safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0024] Figure 1 A schematic diagram of the structure of the sling provided in an embodiment of the present application;

[0025] Figure 2 for Figure 1 Schematic diagram from another perspective;

[0026] Figure 3 for Figure 1 A schematic diagram of the structure of the middle clamping part;

[0027] Figure 4 A schematic diagram of the structure of a motor stator provided in an embodiment of the present application;

[0028] Figure 5 for Figure 4 Schematic diagram of the structure of the stator core.

[0029] Description of reference numerals:

[0030] 10-Spreader;

[0031] 100- clamping portion;

[0032] 110 - clamping rod; 111 - first clamping rod; 112 - second clamping rod; 113 - first side plate; 114 - second side plate;

[0033] 120-connecting rod; 121-adjusting thread; 122-connecting nut;

[0034] 130-adjustment handle; 131-adjustment hole;

[0035] 140-lifting rod; 141-connecting thread;

[0036] 200- Hoisting Department;

[0037] 210-first hoisting rod; 211-connecting plate;

[0038] 220 - second hanging rod; 221 - assembly hole;

[0039] 230-rings;

[0040] 300-fasteners;

[0041] 20-motor stator;

[0042] 21- stator core;

[0043] 22- stator winding;

[0044] 30-hoisting slot;

[0045] 31- first side wall;

[0046] 32- Second side wall.

[0047] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0048] To make the purpose, technical solutions, and advantages of this application more clear, the technical solutions in the embodiments of this application will be described in more detail below in conjunction with the drawings in the preferred embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0049] It should be noted that in the description of the embodiments of the present application, terms such as "upper", "lower", "inside", and "outside" indicating orientation or positional relationships are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of description. They do not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the embodiments of the present application.

[0050] In addition, it should be noted that the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0051] In this application, unless otherwise expressly specified or limited, terms such as "installed," "connected," and "fixed" should be interpreted broadly. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections, electrical connections, or communication; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0052] In related technologies, the stator usually includes a machine base, a stator core and a stator winding arranged on the stator core. When assembling the stator, a hook is usually used to hang on the lead wire of the stator winding, and then the hook is lifted by a lifting device, and then the stator core and the stator winding are lifted to assemble the stator core and the stator winding into the machine base.

[0053] However, during the lifting process, the above assembly method requires the lead wire of the stator winding to bear the weight of the stator core and the stator winding, which can easily cause the root of the lead wire of the stator winding to tear, resulting in damage to the insulation structure at the root of the lead wire, and thus create a safety hazard.

[0054] In view of this, the present application provides a sling for hoisting a motor stator, wherein the motor stator includes a stator core and a stator winding arranged on the stator core, and the stator core has hoisting grooves on opposite sides along a first direction. The sling includes a clamping portion and a hoisting portion, wherein the clamping portion is provided with a clamping rod matching the hoisting groove, and two clamping rods arranged at intervals correspond to the two hoisting grooves one by one, and the hoisting grooves are clamped and fixed together by the two clamping rods. The two clamping rods are connected by a connecting rod. The hoisting portion is connected to the clamping portion, and the hoisting portion is used to connect to a lifting device to realize the hoisting of the motor stator. With such an arrangement, the hoisting grooves are clamped and fixed by the two clamping rods, and then the hoisting portion is lifted by the lifting device, thereby realizing the hoisting of the motor stator, which can avoid damage to the stator winding during the assembly process, thereby eliminating safety hazards.

[0055] The present application will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0056] See also Figures 1 to 5 The present application provides a sling 10 for hoisting a motor stator 20. The motor stator 20 may include a stator core 21 and a stator winding 22 provided on the stator core 21. The stator core 21 is provided with hoisting grooves 30 on opposite sides along a first direction. The sling 10 may include a clamping portion 100 and a hoisting portion 200. The clamping portion 100 includes two clamping rods 110 arranged opposite to each other and spaced apart along the first direction and a connecting rod 120 connecting the two clamping rods 110. The two clamping rods 110 are respectively clamped in the two hoisting grooves 30 of the stator core 21. The hoisting portion 200 is connected to the clamping portion 100, and the hoisting portion 200 is used to be connected to a lifting device.

[0057] It should be noted that the stator core 21 of the motor stator 20 can be made of laminated silicon steel sheets. The stator core 21 is typically used to house the stator winding. The stator core 21 has hanging slots 30 on opposite sides along the first direction. The stator winding can be wound with copper wire. During use of the motor, when the power is turned on, the stator winding generates a magnetic field around the stator core 21, thereby driving the motor's rotor to rotate.

[0058] The first direction corresponds to Figure 1 The X-axis direction in .

[0059] In order to improve the safety and efficiency of the hoisting process, ensure that the motor stator 20 is protected from damage during transportation or installation. Therefore, an embodiment of the present application provides a hoisting device 10 for hoisting the motor stator 20. The hoisting device 10 may include a clamping portion 100. The clamping portion 100 includes two clamping rods 110 arranged opposite to each other and spaced apart along a first direction. The two clamping rods 110 are connected by a connecting rod 120. The clamping rods 110 are arranged in a one-to-one correspondence with the hoisting slots 30. During the hoisting operation, the two clamping rods 110 can be accurately inserted into the hoisting slots 30 on both sides of the stator core 21 to achieve a stable connection with the motor stator 20, effectively preventing the stator core 21 from slipping or shaking that may occur during the hoisting process.

[0060] The sling 10 also includes a hoisting portion 200, which is connected to the clamping portion 100 and is used to connect to a lifting device. The hoisting portion 200 enables the sling 10 to be connected to various lifting devices (e.g., a crane), thereby enabling convenient lifting of the motor stator 20. Through the synergistic effect of the hoisting portion 200 and the lifting device, the motor stator 20 can be smoothly and safely transported to a designated location for assembly with the motor base.

[0061] As can be understood, the sling 10, by providing the clamping portion 100 and the hoisting portion 200, achieves efficient and safe hoisting of the motor stator 20. The clamping rod 110 secures the hoisting slot 30, preventing damage to the stator winding during assembly, thereby eliminating safety hazards. Furthermore, hoisting the motor stator 20 using the sling 10 improves work efficiency and reduces operational risks.

[0062] See also Figures 1 to 3 In the embodiment of the present application, at least one of the two clamping rods 110 is movable relative to the connecting rod 120 along the first direction, so that the distance between the two clamping rods 110 is adjustable.

[0063] It should be noted that in order to enhance the applicability and flexibility of the sling 10, at least one of the two clamping rods 110 is configured to be movable and adjusted along a first direction relative to the connecting rod 120, so that the distance between the two clamping rods 110 can be adjusted.

[0064] Specifically, by configuring the two clamping rods 110 with an adjustable spacing, the hoist 10 can accommodate motor stators 20 of varying sizes or specifications. When hoisting motor stators 20 of varying sizes, the operator can adjust the spacing between the two clamping rods 110 to ensure they are precisely and securely engaged with the hoisting slots 30 on either side of the stator core 21, preventing the motor stator 20 from slipping during the hoisting process.

[0065] See also Figure 1In the embodiment of the present application, there are two connecting rods 120, and the two connecting rods 120 are respectively arranged at the two ends of the two clamping rods 110 along the second direction.

[0066] It can be understood that the two connecting rods 120 are arranged at the two end positions of the two clamping rods 110 along the second direction (i.e., the length direction of the clamping rod 110). By placing the connecting rods 120 at both ends of the clamping rod 110, the overall balance of the clamping part 100 is achieved, making the sling 10 more stable and reliable during the lifting process, and reducing safety hazards caused by shaking or deflection.

[0067] The second direction corresponds to Figure 1 The Y-axis direction in .

[0068] Furthermore, the provision of two connecting rods 120 provides greater flexibility and convenience for clamping the motor stator 20. For example, when the spacing between the clamping rods 110 needs to be adjusted to accommodate motor stators 20 of different sizes, workers can more easily achieve precise spacing adjustment by moving the connection point between the clamping rods 110 and the connecting rods 120.

[0069] See also Figure 1 In the embodiment of the present application, the two clamping rods 110 include a first clamping rod 111 and a second clamping rod 112. The two ends of the first clamping rod 111 are respectively fixedly connected to the two connecting rods 120; the second clamping rod 112 is movable along the first direction relative to the two connecting rods 120.

[0070] The first clamping rod 111 serves as a stabilizing part of the structure, and both ends of the first clamping rod 111 are securely connected to the two connecting rods 120. This arrangement ensures that the first clamping rod 111 remains stable during operation, thereby improving the structural stability of the clamping portion 100.

[0071] Furthermore, the second clamping rod 112 is highly flexible and adjustable. Compared to the fixed connection between the first clamping rod 111 and the connecting rod 120, the second clamping rod 112 can move smoothly relative to the two connecting rods 120 in the first direction. This arrangement allows the first clamping rod 111 and the second clamping rod 112 to flexibly adjust the clamping distance between the first clamping rod 111 and the second clamping rod 112 according to the size of the stator core 21, preventing the stator core 21 from slipping during the lifting process, thereby achieving a more precise and efficient clamping operation.

[0072] See also Figure 1In the embodiment of the present application, each connecting rod 120 includes a first end and a second end opposite to each other along a first direction, and the first ends of the two connecting rods 120 are respectively welded or bolted to the two ends of the first clamping rod 111; the second ends of the two connecting rods 120 are respectively passed through the second clamping rod 112.

[0073] In a specific implementation, the first end of the connecting rod 120, that is, the end of the connecting rod 120 close to the first clamping rod 111, is configured to be fixedly connected to both ends of the first clamping rod 111. In order to achieve a stable connection between the connecting rod 120 and the first clamping rod 111, the connecting rod 120 can be welded to the first clamping rod 111, or can be bolted to the first clamping rod 111. Of course, this embodiment is not limited here. The welding connection is to melt the welding material at a high temperature and fuse the connection point between the first clamping rod 111 and the connecting rod 120 so that the first clamping rod 111 and the connecting rod 120 are connected. The welding connection can improve the connection strength between the first clamping rod 111 and the connecting rod 120. The bolt connection can achieve a quick and detachable connection between the connecting rod 120 and the first clamping rod 111. Such a configuration can facilitate subsequent maintenance and adjustment.

[0074] Furthermore, the second end of the connecting rod 120, that is, the end of the connecting rod 120 closest to the second clamping rod 112, can be configured to penetrate the second clamping rod 112. This configuration ensures a stable connection between the connecting rod 120 and the second clamping rod 112. Furthermore, this configuration allows the second clamping rod 112 to slide relative to the connecting rod 120, thereby ensuring flexibility and reliability of the clamping portion 100 during operation.

[0075] See also Figure 1 and Figure 2 In the embodiment of the present application, the second ends of the two connecting rods 120 are respectively provided with adjustment threads 121, and the clamping portion 100 may further include an adjustment handle 130. There are two adjustment handles 130 corresponding one to one with the connecting rods 120, and the adjustment handles 130 have adjustment holes 131. The inner wall of the adjustment holes 131 is provided with mating threads. The second end of each connecting rod 120 is passed through the adjustment hole 131, and the adjustment handle 130 is threadedly engaged with the connecting rod 120. When the adjustment handle 130 is rotated, the distance between the first clamping rod 111 and the second clamping rod 112 is adjusted.

[0076] Specifically, to adjust the spacing between the first clamping rod 111 and the second clamping rod 112, and to enable the first clamping rod 111 and the second clamping rod 112 to clamp the stator core 21, an adjustment handle 130 is provided at the second end of each connecting rod 120. The adjustment handle 130 and the connecting rod 120 are threadedly engaged via an adjustment thread 121 and an adjustment hole 131, so that the adjustment handle 130 can rotate relative to the connecting rod 120, providing a driving force for adjusting the spacing between the first clamping rod 111 and the second clamping rod 112.

[0077] During actual operation, the second end of the connecting rod 120 passes through the corresponding adjustment hole 131, forming a tight assembly relationship with the adjustment handle 130. By rotating the adjustment handle 130, the operator can drive the adjustment handle 130 to move on the corresponding connecting rod 120 using the principle of threaded engagement. When the operator rotates the adjustment handle 130 to move it toward the first end of the connecting rod 120, the adjustment handle 130 drives the second clamping rod 112 toward the first clamping rod 111, thereby reducing the distance between the first clamping rod 111 and the second clamping rod 112. Furthermore, the first clamping rod 111 and the second clamping rod 112 clamp the stator core 21 through the tightening force between the adjustment handle 130 and the connecting rod 120. When it is necessary to release the clamping portion 100 from clamping the stator core 21, the operator simply rotates the adjustment handle 130 in the reverse direction to move the adjustment handle 130 in a direction away from the first end of the connecting rod 120. In this way, the operator then operates the second clamping rod 112 to move the second clamping rod 112 in a direction away from the first clamping rod 111 to remove the sling 10 from the stator core 21.

[0078] It can be understood that, by adjusting the threaded fit between the thread 121 and the adjusting handle 130 , the adjustment of the clamping distance between the first clamping rod 111 and the second clamping rod 112 is simplified, thereby improving the accuracy and convenience of the adjustment.

[0079] In the embodiment of the present application, the cross-sectional shape of the hanging groove 30 can be at least one of a V-shaped, a U-shaped, and an arc-shaped. The cross-sectional shape of the clamping rod 110 is adapted to the cross-sectional shape of the hanging groove 30 .

[0080] It should be noted that the structure and size of the hanging slot 30 will be different depending on the model of the motor stator 20.

[0081] To ensure precise control and stable clamping during the hoisting process, the cross-sectional shape of the clamping rod 110 is configured to match the cross-sectional shape of the hoisting slot 30. This configuration strengthens the connection between the clamping rod 110 and the hoisting slot 30, effectively preventing the stator core 21 from slipping or loosening due to shape mismatch, thereby improving the safety and reliability of the hoist 10.

[0082] See also Figure 1 、 Figure 3 and Figure 4 In the embodiment of the present application, the inner wall of the hanging groove 30 may include a first side wall 31 and a second side wall 32. The first side wall 31 and the second side wall 32 are both planes, and a first angle is formed between the first side wall 31 and the second side wall 32. The clamping rod 110 may include a first side plate 113 and a second side plate 114. The first angle is equal to the second angle.

[0083] It should be noted that, in order to match the structure of the hoisting slot 30, the clamping rod 110 is provided with a first side plate 113 and a second side plate 114, and a second angle matching the first angle is formed between the first side plate 113 and the second side plate 114. This arrangement ensures that the clamping rod 110 can achieve seamless docking and tight fit with the hoisting slot 30 when clamping the hoisting slot 30. The first side plate 113 fits the first side wall 31, and the second side plate 114 fits the second side wall 32, respectively, which increases the contact area, improves the friction, and effectively prevents the hoisting slot 30 from sliding or deflecting during the hoisting process, thereby ensuring the stability and reliability of the hoisting operation.

[0084] In the embodiment of the present application, the value range of the first angle is 60°-120°.

[0085] It should be noted that the first angle is typically greater than 60°, ensuring that there is a sufficient angle between the first side wall 31 and the second side wall 32 to resist lateral forces that may be generated during the lifting process, thereby maintaining the stability of the lifting groove 30. In addition, the first angle is typically less than 120°, allowing the clamping rod 110 to firmly clamp the lifting groove 30, improving lifting stability.

[0086] See also Figure 1 In the embodiment of the present application, the clamping portion 100 may further include a lifting rod 140. One end of the lifting rod 140 is movably connected to one of the two connecting rods 120, and the other end is hooked and matched with the other of the two connecting rods 120.

[0087] Among them, by arranging the lifting rod 140 between the two connecting rods 120, the structural strength of the clamping part 100 can be improved, thereby improving the safety and reliability of the clamping part 100.

[0088] In the embodiment of the present application, a connecting nut 122 is fixedly provided on one of the two connecting rods 120, and the connecting nut 122 has a threaded hole. A connecting thread 141 is provided at one end of the lifting rod 140 facing the connecting nut 122, and the lifting rod 140 is threadedly engaged with the connecting nut 122.

[0089] In a specific implementation, one of the two connecting rods 120 is provided with a connecting nut 122. This connecting nut 122 provides a reliable support point for the connection between the lifting rod 140 and the connecting rod 120. The connecting nut 122 has a threaded hole inside, and the lifting rod 140 has connecting threads 141 that match the threaded hole. By rotating the lifting rod 140, the lifting rod 140 and the connecting nut 122 achieve a tight threaded fit, ensuring a secure fixation of the lifting rod 140.

[0090] In addition, the threaded connection method has the advantage of being easy to install and disassemble. When the lifting rod 140 needs to be replaced or maintained, the operator can simply rotate the lifting rod 140 to separate and connect the lifting rod 140 and the connecting nut 122, thereby improving work efficiency and convenience.

[0091] In this way, through the threaded cooperation between the connecting nut 122 and the connecting thread 141 on the lifting rod 140, a stable and flexible connection is achieved between the two connecting rods 120 and the lifting rod 140, thereby improving the structural strength and reliability of the clamping part 100.

[0092] See also Figure 1 In the embodiment of the present application, the hoisting portion 200 may include a first hoisting rod 210, a second hoisting rod 220, and a lifting ring 230. One end of the first hoisting rod 210 is connected to one of the connecting rods 120, and the other end extends along the second direction and away from the other connecting rod 120. The second hoisting rod 220 is fixedly connected to the first hoisting rod 210 and extends along a third direction. The first direction, the second direction, and the third direction are perpendicular to each other. The lifting ring 230 is provided on the second hoisting rod 220 to connect to the lifting equipment.

[0093] In some embodiments, one end of the first hoisting rod 210 is connected to one of the connecting rods 120, ensuring a secure connection between the hoisting portion 200 and the clamping portion 100. The other end extends in a second direction away from the other connecting rod 120. This facilitates hoisting of the clamping portion 100 by the hoisting portion 200, improving stability and balance during the hoisting process.

[0094] Furthermore, the second hoisting rod 220 is fixedly connected to the first hoisting rod 210. The extension direction of the second hoisting rod 220 is along the third direction. Figure 1 In the Z-axis direction, the first, second, and third directions are perpendicular to each other. A lifting ring 230, serving as a component connecting the hoisting portion 200 to the lifting equipment, is provided on the second hoisting rod 220. Through the connection between the lifting ring 230 and the lifting equipment, the hoisting portion 200 can smoothly lift the clamping portion 100, thereby achieving the hoisting of the stator core 21 and stator windings, ensuring smooth hoisting operations.

[0095] See also Figure 1 In the embodiment of the present application, the position of the lifting ring 230 on the second lifting rod 220 is adjustable to adjust the verticality of the motor stator 20 during the lifting process.

[0096] In order to ensure the verticality of the motor stator 20 during the hoisting process, so that the motor stator 20 and the assembly surface of the motor base are closely fitted, the assembly efficiency of the motor stator 20 is improved. The lifting ring 230 can be set to be adjustable on the second hoisting rod 220. Specifically, the second hoisting rod 220 can be provided with a slide rail, a slot or other fixing device to provide a stable and movable support point for the lifting ring 230. By providing a fastening bolt, a slider or an adjustment nut, the operator can easily and accurately adjust the position of the lifting ring 230 on the second hoisting rod 220. Of course, this embodiment is not limited here.

[0097] When the verticality of the motor stator 20 needs to be adjusted, the operator adjusts the position of the lifting ring 230 on the second lifting rod 220 accordingly to adjust the relative position of the lifting equipment and the motor stator 20, thereby adjusting the posture of the motor stator 20 during the lifting process.

[0098] See also Figure 1 In the embodiment of the present application, the second hanging rod 220 is provided with a plurality of assembly holes 221 spaced apart along the third direction, and the hanging ring 230 is provided on any one of the plurality of assembly holes 221 .

[0099] Specifically, multiple assembly holes 221 can be evenly distributed on the second lifting rod 220 at a certain interval and arranged along the third direction, so that the lifting ring 230 can be flexibly installed on any assembly hole 221 as needed, thereby realizing rapid adjustment of the lifting point position.

[0100] In actual operation, the operator can determine the appropriate hoisting point position according to the size, weight and hoisting environment of the motor stator 20. Then, the hoisting ring 230 is fixedly connected with the matching assembly hole 221.

[0101] By providing multiple assembly holes 221, the hoisting portion 200 can meet the hoisting requirements of motor stators 20 of different specifications and weights. By selecting the appropriate position of the assembly holes 221, the operator can easily adjust the balance state of the motor stator 20 to ensure smooth hoisting operations.

[0102] The number and layout of the assembly holes 221 are merely given for example, and are not limited in this embodiment.

[0103] See also Figure 1In an embodiment of the present application, a connecting plate 211 is provided at one end of the first lifting rod 210 facing the connecting rod 120. The connecting plate 211 is stacked with the connecting rod 120. A first connecting hole is provided on the connecting plate 211, and a second connecting hole is provided on the connecting rod 120. The first lifting rod 210 and the connecting rod 120 are connected by a fastener 300 that passes through the first connecting hole and the second connecting hole in sequence.

[0104] It is understandable that a connecting plate 211 is provided on the first hoisting rod 210 to facilitate the connection between the first hoisting rod 210 and the connecting rod 120 , thereby ensuring a stable connection and force transmission efficiency between the first hoisting rod 210 and the connecting rod 120 .

[0105] The connection plate 211 and the connection rod 120 are stacked and tightly fitted to form a connection surface, thereby enhancing the structural strength of the connection between the connection plate 211 and the connection rod 120 and improving the overall durability of the spreader 10.

[0106] To ensure a secure connection between the first hoisting rod 210 and the connecting rod 120, a first connecting hole is provided on the connecting plate 211, and a second connecting hole is provided at a corresponding position on the connecting rod 120, matching the first connecting hole. Fasteners 300 pass through the first connecting hole on the connecting plate 211 and the second connecting hole on the connecting rod 120, securely connecting the first hoisting rod 210 and the connecting rod 120. Tightening the fasteners 300 prevents safety hazards caused by loosening or misalignment.

[0107] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A lifting device for lifting a motor stator (20), characterized in that: The motor stator (20) comprises a stator core (21) and a stator winding provided on the stator core (21); the stator core (21) is provided with hanging grooves (30) on two opposite sides along a first direction; and the hanging tool (10) comprises: A clamping portion (100) comprises two clamping rods (110) arranged opposite to each other and spaced apart along the first direction and a connecting rod (120) connecting the two clamping rods (110), wherein the two clamping rods (110) are respectively clamped in the two hanging grooves (30) of the stator core (21); A hoisting portion (200), the hoisting portion (200) is connected to the clamping portion (100), and the hoisting portion (200) is used to be connected to a lifting device.

2. The sling according to claim 1, characterized in that: At least one of the two clamping rods (110) is movable relative to the connecting rod (120) along the first direction, so that the distance between the two clamping rods (110) is adjustable.

3. The sling according to claim 2, characterized in that: There are two connecting rods (120), and the two connecting rods (120) are respectively arranged at two ends of the two clamping rods (110) along the second direction.

4. The sling according to claim 3, characterized in that: The two clamping rods (110) include a first clamping rod (111) and a second clamping rod (112), Both ends of the first clamping rod (111) are fixedly connected to the two connecting rods (120) respectively; The second clamping rod (112) is movable along the first direction relative to the two connecting rods (120).

5. The sling according to claim 4, characterized in that: Each of the connecting rods (120) comprises a first end and a second end opposite to each other along the first direction, and the first ends of the two connecting rods (120) are respectively welded or bolted to the two ends of the first clamping rod (111); The second ends of the two connecting rods (120) are respectively passed through the second clamping rod (112).

6. The sling according to claim 5, characterized in that: The second ends of the two connecting rods (120) are respectively provided with an adjusting thread (121), and the clamping portion (100) further comprises: an adjusting handle (130), wherein the adjusting handles (130) are two and correspond one to one with the connecting rods (120). The adjusting handle (130) has an adjusting hole (131), the inner wall of the adjusting hole (131) is provided with a matching thread, the second end of each connecting rod (120) is passed through the adjusting hole (131), the adjusting handle (130) is threadedly matched with the connecting rod (120), and the distance between the first clamping rod (111) and the second clamping rod (112) is adjusted when the adjusting handle (130) is rotated.

7. The spreader according to any one of claims 1 to 6, characterized in that: The cross-sectional shape of the hoisting groove (30) is at least one of a V-shape, a U-shape, and an arc shape; The cross-sectional shape of the clamping rod (110) is adapted to the cross-sectional shape of the hanging groove (30).

8. The spreader according to claim 7, characterized in that: The inner wall of the hanging groove (30) comprises a first side wall (31) and a second side wall (32), the first side wall (31) and the second side wall (32) are both planes, and a first angle is formed between the first side wall (31) and the second side wall (32); The clamping rod (110) comprises a first side plate (113) and a second side plate (114); a second angle is formed between the first side plate (113) and the second side plate (114); the first angle is equal to the second angle.

9. The spreader according to claim 8, characterized in that: The first angle has a value range of 60°-120°.

10. The spreader according to any one of claims 3 to 6, characterized in that: The clamping portion (100) further includes: a lifting rod (140), one end of which is movably connected to one of the two connecting rods (120), and the other end of which is hooked and engaged with the other of the two connecting rods (120).

11. The spreader according to claim 10, characterized in that: A connecting nut (122) is fixedly provided on one of the two connecting rods (120), and the connecting nut (122) has a threaded hole. A connecting thread (141) is provided on one end of the lifting rod (140) facing the connecting nut (122), and the lifting rod (140) is threadedly matched with the connecting nut (122).

12. The spreader according to any one of claims 1 to 6, characterized in that: The hoisting part (200) comprises: a first hanging rod (210), one end of the first hanging rod (210) being connected to one of the connecting rods (120), and the other end of the first hanging rod (210) extending in a second direction and in a direction away from the other connecting rod (120); a second hoisting rod (220), the second hoisting rod (220) being fixedly connected to the first hoisting rod (210), the second hoisting rod (220) extending along a third direction, the first direction, the second direction and the third direction being perpendicular to each other; A lifting ring (230) is provided on the second lifting rod (220) for connection with a lifting device.

13. The spreader according to claim 12, characterized in that: The position of the lifting ring (230) on the second lifting rod (220) is adjustable to adjust the verticality of the motor stator (20) during the lifting process.

14. The spreader according to claim 13, wherein: The second hanging rod (220) is provided with a plurality of assembly holes (221) spaced apart along the third direction. The hanging ring (230) is provided on any one of the plurality of assembly holes (221).

15. The spreader according to claim 12, wherein: A connecting plate (211) is provided at one end of the first hoisting rod (210) facing the connecting rod (120), and the connecting plate (211) and the connecting rod (120) are stacked. A first connecting hole is provided on the connecting plate (211), and a second connecting hole is provided on the connecting rod (120). The first hoisting rod (210) and the connecting rod (120) are connected by a fastener (300) that passes through the first connecting hole and the second connecting hole in sequence.

Images