A detachable stator end protection device

Abstract

The present application provides a detachable stator end protection device, which relates to the technical field of motor stator protection. A detachable stator end protection device is installed on the stator structure, including a bottom load-bearing mechanism, an axial lifting mechanism and a radial telescopic mechanism. The load-bearing component is used to support the end of the stator structure, and the bottom lifting component in the bottom cabin is forced to undergo axial displacement in cooperation with hydraulic oil to buffer the stator structure. The side protection component is used to protect the peripheral side of the stator structure. The detachable setting between the axial cylinder and the bottom cabin allows the load-bearing component on the bottom side of the stator structure and the side protection component on the peripheral side to be removed during transportation, so as to be suitable for the stator structure to be installed with windings, pressed into the machine base and other related operations after transportation; the axial position change between the lifting cylinder and the axial cylinder allows the radial telescopic mechanism to change the height of the fixed position of the stator structure, so as to be suitable for stator structures of different heights.

Description

Technical Field

[0001] The present application relates to the field of motor stator protection, and in particular to a detachable stator end protection device. Background Art

[0002] In the prior art, for example, a portable and detachable stator end protection device and a method of using the same are disclosed in publication number CN117674456B. The protective sleeve is set on the lower part of the stator, and the lifting base is installed in the limiting hole. Although the lifting base is fixed on the stator by abutting against the inner surface of the stator through an internal support clamping device, the internal support clamping device can be adapted to stators of various sizes, and the scope of use is wider. The lifting base is easy to disassemble and install, and the protective sleeve can provide full protection, so as to better realize the transportation and circulation of the stator in various production stages.

[0003] However, in the above scheme, firstly, it adopts rotating chuck to drive multiple supporting claws to synchronously radially extend and retract to achieve the effect of positioning the stator from inside the stator. This method requires to set the stator and the protective cover first, and then rotate the rotating chuck from the axis of the stator to realize the radial extension and retraction of the supporting claws. This design is not convenient for stators of different heights and different inner diameters. Once the stator height is large or the inner diameter is small, the rotating chuck is not easy to operate; secondly, the above scheme adopts the lifting action from the lifting ring located at the axis of the stator. This method of lifting is only suitable for the simple action of transporting the stator. For example, after the stator is transported, it is necessary to install windings, press into the machine base and other related operations. The above scheme also needs to add additional steps to remove the stator from the protective cover and the lifting base. In this process, the risk of accidental touch and rigid impact on the stator is increased. Summary of the invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a detachable stator end protection device, which is installed on a stator structure, wherein the stator structure is composed of a lower stator and an upper stator which are sleeved on the outer side of the liner in a staggered manner in positive and negative directions, and includes: a bottom load-bearing mechanism, an axial lifting mechanism and a radial telescopic mechanism, wherein the bottom load-bearing mechanism is coaxially arranged at the bottom of the stator structure, wherein the bottom load-bearing mechanism includes a bottom cabin, wherein the circumference of the bottom cabin is evenly connected with a plurality of load-bearing components for bearing the stator structure, wherein the plurality of load-bearing components have lifting and lowering variations, wherein the bottom cabin is coaxially sealed and slidably provided with a bottom lifting component, wherein the lower end surface of the bottom cabin is coaxially fixed with a base, wherein the circumference of the base is evenly fixed with a plurality of side protection components with radial telescopic variations, and the bottom cabin and the plurality of load-bearing components are filled with hydraulic oil; wherein the axial lifting mechanism is coaxially and detachably connected to the bottom cabin, wherein the axial lifting mechanism includes an axial cylinder, wherein one end of the axial cylinder is detachably connected to the bottom cabin. The cam is provided with a plurality of camshafts which are provided at the camshaft end and the camshaft ...

[0005] Preferably, a connecting ring is coaxially fixed to the upper end surface of the bottom cabin, the connecting ring is sleeved on the shaft core cylinder, and at least two locking columns are symmetrically fixed to the side wall of the connecting ring.

[0006] Preferably, a plurality of the load-bearing components are arranged along the radial extension of the bottom cabin.

[0007] Preferably, the bottom lifting assembly includes: a bottom piston, a bottom slide rod, a special-shaped rod and an axial slide groove, the bottom piston sealingly slides on the bottom cabin; the bottom slide rod is coaxially fixed to the bottom piston and extends out of the bottom cabin; the bottom slide rod axially slides on the lifting cylinder; the special-shaped rod is coaxially fixed to the bottom slide rod; a plurality of the axial slide grooves are axially evenly arranged on the side wall of the bottom slide rod, and the bottom end of the lifting cylinder and the plurality of the axial slide grooves are slidingly fitted.

[0008] Preferably, the side protection assembly includes: a radial plate, a radial sliding rod and a soft pad, the radial plate is fixed to the side wall of the base; the radial sliding rod is slidably inserted in the radial plate, and the radial sliding rod is arranged in an L shape; the soft pad is fixed to the inner side of the axially same end of the L-shaped radial sliding rod and the stator structure.

[0009] Preferably, at least two Z-shaped grooves are symmetrically arranged on the inner wall of the shaft core cylinder, and the Z-shaped grooves and the locking cylinder are slidably fitted.

[0010] Preferably, a bottom through hole is coaxially arranged on the lower end surface of the lifting cylinder, and a plurality of clamping blocks are evenly fixed on the inner wall of the bottom through hole in a circumferential direction, and the plurality of clamping blocks and the plurality of axial sliding grooves are slidably matched.

[0011] Preferably, a sealing ring is provided on the sealing sleeve on the side wall of the top piston, a plurality of L-shaped through holes are circumferentially arranged between the upper end surface and the side wall of the top piston, and the sealing ring covers one end of the L-shaped through hole.

[0012] Preferably, the suspension rod is sleeved on one end of the bottom slide rod extending out of the bottom cabin, and the two can and only can slide axially.

[0013] Preferably, the portion of the bottom slide bar extending out of the bottom cabin is sleeved with a pressure assembly, and the pressure assembly includes: a limiting ring and a tension spring, the limiting ring is threadedly connected to the portion of the bottom slide bar extending out of the bottom cabin; the tension spring is sleeved on the portion of the bottom slide bar extending out of the bottom cabin; one end of the tension spring is rotatably fixed to the limiting ring, and the other end of the tension spring is fixed to the upper end surface of the bottom cabin.

[0014] Preferably, the load-bearing component includes: a load-bearing cabin, a load-bearing pad, a slide and a sealing plate, the load-bearing cabin and the bottom cabin are fixedly connected; the load-bearing pad is arranged along the upper end surface of the load-bearing cabin; the slide is fixedly connected to the load-bearing pad and is sealingly slidably inserted in the load-bearing cabin; the sealing plate is fixedly connected to the slide and is sealingly slidably inserted in the load-bearing cabin.

[0015] Preferably, an elastic member is provided between the suspension rod and the special-shaped rod, and the elastic force of the elastic member is adjustable.

[0016] Preferably, the elastic member comprises: a threaded rod and a spring, wherein the threaded rod is threadedly connected to the suspension rod and extends to the interior of the suspension rod; the spring is arranged inside the suspension rod, and one end of the spring is fixed to the end face of the threaded rod, and the other end abuts against the end face of the special-shaped rod.

[0017] The beneficial effects of the present invention are:

[0018] 1. The load-bearing components are used to support the ends of the stator structure, and the hydraulic oil filled inside the stator structure flows between the bottom cabin and the load-bearing components, forcing the bottom lifting components in the bottom cabin to undergo axial displacement, thereby buffering the stator structure when it is loaded, and preventing the stator structure from being touched by axial rigidity during the loading process;

[0019] 2. Use the side protection components with radial expansion and contraction to protect the peripheral side of the stator structure and prevent the peripheral side of the stator structure from being damaged during transportation;

[0020] 3. The detachable arrangement between the shaft core and the bottom cabin allows the bottom cabin and the load-bearing components on the bottom side of the stator structure and the side protection components on the peripheral side to be removed during transportation, and the radial telescopic mechanism is used to fix the stator structure during rotation, so as to be suitable for the installation of windings, pressing into the machine base and other related operations of the stator structure after transportation;

[0021] 4. By utilizing the axial position change between the lifting cylinder and the shaft cylinder, the position of the radial telescopic mechanism fixed to the stator structure can be changed in height, so as to be suitable for stator structures of different heights;

[0022] 5. The axial rise of the suspension rod in the lifting cylinder can force the radial abutment rod to increase the abutment force on the inner wall of the stator structure, so that the stator structure can enhance its stability during the lifting process through its own weight.

[0023] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 is a schematic diagram of the overall structure of a detachable stator end protection device installed on a stator structure according to an embodiment of the present application;

[0026] Figure 2 is a schematic diagram of the position of a detachable stator end protection device installed on a stator structure according to an embodiment of the present application;

[0027] Figure 3 is a structural exploded diagram of a detachable stator end protection device according to an embodiment of the present application;

[0028] Figure 4 is a cross-sectional view of a detachable stator end protection device according to an embodiment of the present application;

[0029] Figure 5 According to the embodiment of the present application Figure 4 A is an enlarged schematic diagram;

[0030] Figure 6 According to the embodiment of the present application Figure 4 A magnified schematic diagram of B;

[0031] Figure 7 According to the embodiment of the present application Figure 4 A magnified schematic diagram of middle C;

[0032] Figure 8 According to the embodiment of the present application Figure 4 A magnified schematic diagram of D in the middle;

[0033] Fig. 9 is an exploded view of a partial structural cross-section of a detachable stator end protection device according to an embodiment of the present application;

[0034] Fig.10 According to the embodiment of the present application Fig. 9 Middle E is an enlarged schematic diagram;

[0035] Fig.11 According to the embodiment of the present application Fig. 9 Middle F is an enlarged schematic diagram;

[0036] Fig.12 According to the embodiment of the present application Fig. 9 A magnified schematic diagram of middle G;

[0037] Fig.13 is a schematic diagram of the connection relationship between the bottom cabin and the shaft core cylinder according to an embodiment of the present application;

[0038] Fig.14 is a bottom view of a partial structural section of a detachable stator end protection device according to an embodiment of the present application;

[0039] Fig.15 It is a structural explosion diagram of the bottom sliding rod and the suspension rod according to an embodiment of the present application.

[0040] Icons: 1. Stator structure; 11. Lower stator; 12. Upper stator; 2. Liner; 3. Bottom load-bearing mechanism; 31. Bottom cabin; 311. Connecting ring; 312. Locking column; 32. Load-bearing assembly; 321. Load-bearing cabin; 322. Load-bearing pad; 323. Slide; 324. Sealing plate; 33. Bottom lifting assembly; 331. Bottom piston; 332. Bottom slide rod; 333. Special-shaped rod; 334. Axial slide groove; 34. Base; 35. Side protection assembly; 351. Radial plate; 352. Radial slide rod; 353. Cushion; 36. Pressure assembly; 361, limit ring; 362, tension spring; 4, axial lifting mechanism; 41, axial cylinder; 411, Z-shaped groove; 42, lifting cylinder; 421, bottom through hole; 422, block; 423, convex ring; 424, axial hole; 43, suspension rod; 431, top piston; 432, sealing ring; 433, L-shaped through hole; 434, threaded rod; 435, spring; 5, radial telescopic mechanism; 51, driving disk; 511, annular hole; 512, radial slide; 513, recessed portion; 52, radial abutment rod; 521, limit block. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0042] In order to make the purpose, technical solutions and advantages of the implementation methods of this application clearer, the technical solutions in the implementation methods of this application will be clearly and completely described below in conjunction with the drawings in the implementation methods of this application. Obviously, the described implementation methods are part of the implementation methods of this application, not all of the implementation methods. Based on the implementation methods in this application, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0043] like Figure 1 and Figure 2 As shown, a detachable stator end protection device according to an embodiment of the present application is installed on a stator structure 1, and the stator structure 1 consists of a lower stator 11 and an upper stator 12 which are arranged on the outside of an inner liner 2 in a staggered manner in positive and negative directions.

[0044] It should be noted that in the specific embodiments of the present application, the specific style of the stator structure 1 is not intentionally limited. The style of the stator structure 1 in the embodiments of the present application is only used as a reference for installing the end protection device.

[0045] Specifically, Figure 1-Figure 15 As shown, a detachable stator end protection device according to an embodiment of the present application includes a bottom load-bearing mechanism 3, an axial lifting mechanism 4 and a radial telescopic mechanism 5.

[0046] like Figure 1-Figure 4As shown, the bottom load-bearing mechanism 3 is coaxially arranged at the bottom of the stator structure 1, and the bottom load-bearing mechanism 3 includes a bottom cabin 31, and a plurality of load-bearing components 32 for supporting the stator structure 1 are evenly connected to the periphery of the bottom cabin 31, and the plurality of load-bearing components 32 have lifting and lowering variations. A bottom lifting component 33 is coaxially sealed and slidably provided on the bottom cabin 31, and a base 34 is coaxially fixedly connected to the lower end surface of the bottom cabin 31, and a plurality of side protection components 35 with radial telescopic variations are evenly fixedly connected to the periphery of the base 34, and hydraulic oil is filled between the bottom cabin 31 and the plurality of load-bearing components 32.

[0047] It can be understood that when the stator structure 1 is not carried on the load-bearing component 32, under the action of the deadweight of the bottom lifting component 33, the bottom lifting component 33 is at the lowest point of its axial stroke, that is, the hydraulic oil reserve in the load-bearing component 32 is the largest. After the stator structure 1 is placed on the load-bearing component 32, under the action of the weight of the stator structure 1, the height of the load-bearing component 32 will be lowered, forcing the hydraulic oil therein to flow into the bottom cabin 31 and causing the bottom lifting component 33 to undergo an upward axial displacement. This action forms a load on the stator structure 1 and has a certain buffering capacity during the load-bearing process, thereby preventing the stator structure 1 from being damaged by rigid contact when placed on the load-bearing component 32. The side protection component 35 with radial telescopic changes can provide a certain protective effect on the side of the stator structure 1, thereby preventing the side of the stator structure 1 from being accidentally hit and damaged during transportation.

[0048] Furthermore, the axial lifting mechanism 4 is coaxially and detachably connected to the bottom cabin 31, and the axial lifting mechanism 4 includes an axial cylinder 41, one end of which is detachably connected to the upper end surface of the bottom cabin 31, and the other end of the axial cylinder 41 is threadedly connected to a lifting cylinder 42, and a suspension rod 43 is sealed and slidably inserted in the lifting cylinder 42.

[0049] It can be understood that when the lifting cylinder 42 rotates on the shaft cylinder 41, the height of the lifting cylinder 42 on the shaft cylinder 41 can be changed. At the same time, the detachable connection between the bottom cabin 31 and the shaft cylinder 41 allows the load-bearing component 32 and the side protection component 35 on the bottom cabin 31 to be removed.

[0050] Furthermore, the radial telescopic mechanism 5 is sleeved on one end of the suspension rod 43 extending from the lifting cylinder 42. The radial telescopic mechanism 5 includes a driving disk 51 sleeved on the lifting cylinder 42. The driving disk 51 is sealingly rotatably connected to the lifting cylinder 42. A plurality of radial abutment rods 52 are sealingly slidably inserted on the circumferential side of the driving disk 51. Hydraulic oil is filled between the driving disk 51 and the lifting cylinder 42.

[0051] It can be understood that, through the axial displacement of the lifting rod 43 in the lifting cylinder 42, the hydraulic oil can be forced to flow back and forth between the lifting cylinder 42 and the driving disk 51. By utilizing the pressure change in the sealing structure, the radial expansion and contraction change of the radial abutment rod 52 on the driving disk 51 can be realized to achieve abutment against the inner wall of the stator structure 1. During the lifting process, the weight of the stator structure 1 and the deadweight of the stator end protection device in the present application can be utilized to further enhance the abutment force of the radial abutment rod 52 on the inner wall of the stator structure 1, thereby ensuring the stability of the stator structure 1 during the lifting process.

[0052] In addition, a detachable stator end protection device according to an embodiment of the present application also has the following additional technical features:

[0053] Among them, Fig. 9 and Fig.13 As shown, a connecting ring 311 is coaxially fixed to the upper end surface of the bottom cabin 31, and the connecting ring 311 is sleeved on the shaft cylinder 41. At least two locking columns 312 are symmetrically fixed to the side wall of the connecting ring 311, and at least two Z-shaped grooves 411 are symmetrically arranged on the inner wall of the shaft cylinder 41. The Z-shaped grooves 411 and the locking columns 312 are slidably adapted.

[0054] It can be understood that when the bottom cabin 31 is installed to the shaft cylinder 41, the locking column 312 thereon is aligned with the lowest end of the Z-shaped groove 411, and then the bottom cabin 31 is displaced upward and rotated and displaced along the trajectory of the Z-shaped groove 411 until the locking column 312 is displaced to the highest point of the Z-shaped groove 411. At this time, a locked state is formed between the bottom cabin 31 and the shaft cylinder 41. Conversely, the bottom cabin 31 and the shaft cylinder 41 can be separated by reverse displacement and rotation.

[0055] like Figure 3 , Figure 4 , Fig. 9 and Fig.14 As shown, a plurality of load-bearing components 32 are arranged to extend radially along the bottom cabin 31 so as to support stator structures 1 of different diameters.

[0056] Specifically, Fig.14 and Fig.15As shown, the bottom lifting assembly 33 includes: a bottom piston 331, a bottom slide bar 332, a special-shaped rod 333 and an axial slide groove 334. The bottom piston 331 is sealed and slides on the bottom cabin 31. It should be noted that the hydraulic oil here is located on the lower side of the bottom piston 331; the bottom slide bar 332 is coaxially fixed to the bottom piston 331 and extends out of the bottom cabin 31; the bottom slide bar 332 slides axially on the lifting cylinder 42. It should be noted that the length of the bottom slide bar 332 extending into the lifting cylinder 42 is not less than the axial displacement stroke length of the lifting cylinder 42 to prevent the two from detaching; the special-shaped rod 333 is coaxially fixed to the bottom slide bar 332; a plurality of axial slide grooves 334 are axially and evenly arranged on the side wall of the bottom slide bar 332, and the bottom end of the lifting cylinder 42 and the plurality of axial slide grooves 334 are slidably matched. It can be understood that the specific relationship between the lifting cylinder 42 and the bottom slide bar 332 is that they can and can only be axially displaced, and rotational interference is formed between the two.

[0057] Further, such as Fig. 9 As shown, the side protection assembly 35 includes: a radial plate 351, a radial slide rod 352 and a cushion 353, the radial plate 351 is fixedly connected to the side wall of the base 34; the radial slide rod 352 is slidably inserted into the radial plate 351, and the radial slide rod 352 is L-shaped; the cushion 353 is fixedly connected to the inner side of the L-shaped radial slide rod 352 and the axially same end of the stator structure 1.

[0058] It can be understood that even if the radial slide bar 352 is inserted into the innermost part of the radial plate 351, the vertical end of the radial slide bar 352 (the end in the L-shape that is axially in the same direction as the stator structure 1) is also located on the outside of the stator structure 1. In this way, the radial slide bar 352 can always be located on the outside of the stator structure 1 to achieve protection of the circumferential side of the stator structure 1. The presence of the soft pad 353 is suitable for when the outer diameter of the carried stator structure 1 is within the displacement range of the radial slide bar 352. At this time, when the radial slide bar 352 is subjected to a radial impact, it will be displaced toward the axis and touch the outer wall of the stator structure 1. In this way, the soft pad 353 will play a certain protective role on the stator structure 1.

[0059] Further, such as Figure 6 , Figure 9-11As shown, a bottom through hole 421 is coaxially provided on the lower end face of the lifting cylinder 42, and a plurality of blocks 422 are uniformly fixedly connected circumferentially to the inner wall of the bottom through hole 421. The plurality of blocks 422 and the plurality of axial slide grooves 334 are slidably fitted together. It can be understood that, through the sliding fitting relationship between the blocks 422 and the axial slide grooves 334, rotational interference is achieved between the lifting cylinder 42 and the bottom slide rod 332 to prevent relative rotation between the two. A convex ring 423 is coaxially fixedly provided on the upper end face of the lifting cylinder 42, and a plurality of axial holes 424 penetrating the convex ring 423 are circumferentially provided on the convex ring 423 to facilitate the hydraulic oil to form a connection between the lifting cylinder 42 and the driving disk 51.

[0060] Further, such as Fig. 9 As shown, one end of the suspension rod 43 inserted into the lifting cylinder 42 is fixedly connected with a top piston 431 , and the top piston 431 slides in a sealing manner on the lifting cylinder 42 . It should be noted that the hydraulic oil here is located on the upper side of the top piston 431 .

[0061] like Figure 7 As shown, a sealing ring 432 is provided on the sealing sleeve on the side wall of the top piston 431 , and a plurality of L-shaped through holes 433 are circumferentially arranged between the upper end surface and the side wall of the top piston 431 , and the sealing ring 432 covers one end of the L-shaped through hole 433 .

[0062] It is understandable that the L-shaped through hole 433 allows the hydraulic oil to fill the inner wall of the sealing ring 432. When the top piston 431 moves upward, the hydraulic oil will exert radial outward pressure on the sealing ring 432, thereby enhancing the sealing between the sealing ring 432 and the lifting cylinder 42.

[0063] It should be noted that the suspension rod 43 is sleeved on one end of the bottom slide bar 332 extending out of the bottom cabin 31, and the two can and can only slide axially. It can be understood that, in this way, when the suspension rod 43 is rotated, the bottom slide bar 332 will be driven to rotate synchronously, and the lifting cylinder 42 will be driven to rotate synchronously, thereby realizing the axial displacement between the lifting cylinder 42 and the shaft cylinder 41 (the two are threadedly connected).

[0064] Further, such as Fig. 9 and Fig.12 As shown, the lower end surface of the driving disk 51 is coaxially provided with an annular hole 511, the annular hole 511 and the convex ring 423 are sealed and rotatably connected, and a plurality of radial slideways 512 are evenly provided on the circumferential side of the annular hole 511, and the radial slideway 512 and the radial abutment rod 52 are sealed and slidably matched.

[0065] It should be noted that if Fig.11 and Fig.12As shown, the upper end surface of the convex ring 423 is provided with a convex ridge extending to both sides, and the upper end surface of the annular hole 511 is provided with a recessed portion 513 adapted to the convex ridge, thereby achieving axial positioning between the driving disk 51 and the lifting cylinder 42.

[0066] It is further necessary to explain that if Fig. 9 As shown, the radial abutment rod 52 is sealed and inserted into one end of the radial slide 512 , and the limiting blocks 521 are symmetrically fixed on both sides thereof to limit the stroke between the radial abutment rod 52 and the radial slide 512 , thereby preventing the radial abutment rod 52 from slipping off the radial slide 512 .

[0067] The following describes the use process of a detachable stator end protection device according to an embodiment of the present application with reference to the accompanying drawings:

[0068] During specific use, when the load-bearing component 32 does not bear the stator structure 1, under the deadweight of the bottom lifting component 33, the bottom lifting component 33 is at the lowest point of its axial stroke, that is, the hydraulic oil reserve in the load-bearing component 32 is the largest. After the stator structure 1 is placed on the load-bearing component 32, under the weight of the stator structure 1, the height of the load-bearing component 32 will be lowered, forcing the hydraulic oil therein to flow into the bottom cabin 31 and causing the bottom lifting component 33 to undergo an upward axial displacement. This action forms a load on the stator structure 1 and plays a certain buffering role during the load-bearing process to avoid the stator structure 1 from collapsing. When the substructure 1 is placed on the load-bearing component 32, the rigid contact is damaged, and the side protection component 35 with radial expansion and contraction can play a certain protective role on the side of the stator structure 1 to prevent the side of the stator structure 1 from being accidentally hit and damaged during transportation. When the height of the stator structure 1 is large and it is inconvenient to operate the suspension rod 43, the suspension rod 43 can be rotated in advance, which will synchronously drive the bottom slide rod 332 to rotate, and synchronously drive the lifting cylinder 42 to rotate, so as to realize the axial displacement between the lifting cylinder 42 and the shaft cylinder 41, so that the position of the suspension rod 43 and the driving disk 51 is relatively raised, and then the stator structure 1 is set The bottom slide bar 332 is connected to the shaft cylinder 41 and pressed on the load-bearing component 32. Since the length of the bottom slide bar 332 extending into the lifting cylinder 42 is not less than the axial displacement stroke length of the lifting cylinder 42, the two can be prevented from being separated. When the stator structure 1 needs to be hoisted and transported, the entire stator end protection device carrying the stator structure 1 is hoisted by the hoist bar 43. At this time, under the weight of the stator structure 1 and the weight of the entire stator end protection device, the hoist bar 43 will move upward relatively, and through the top piston 431 connected thereto, the hydraulic oil is pressed to flow to the inside of the drive disk 51, and the radial resistance of the seal limit slide in the radial slideway 512 is pressed. The connecting rod 52 applies radial outward pressure, forcing the radial abutment rod 52 to abut against the inner wall of the stator structure 1 (specifically, it can abut against the liner 2), and as the axial upward displacement of the suspension rod 43 increases, the abutment force gradually increases until the suspension rod 43 stops displacing. At this time, the entire stator end protection device carrying the stator structure 1 can be lifted and transported. When it is necessary to install the winding, press it into the machine base and other related operations after transportation, the bottom cabin 31 can be separated from the shaft cylinder 41 by reverse displacement and rotation. At this time, the bottom load-bearing mechanism 3 on the stator structure 1 will be removed as a whole to facilitate related operations on the stator structure 1.

[0069] In the related art, this kind of detachable stator end protection device only relies on the back and forth flow of hydraulic oil between the bottom cabin 31 and the load-bearing component 32 to force the bottom lifting component 33 in the bottom cabin 31 to undergo axial displacement to provide buffering for the stator structure 1 when it is loaded. However, its buffering capacity is greatly limited. Once the weight of the stator structure 1 is significantly greater than the weight of the bottom lifting component 33, the buffering at this time is almost negligible, causing the load-bearing component 32 to be almost ineffective in buffering the stator structure 1 during the load-bearing process.

[0070] According to some embodiments of the present application, Figure 3 , Figure 4 and Fig.14 As shown, the portion of the bottom slide bar 332 extending out of the bottom cabin 31 is sleeved with a pressure assembly 36, and the pressure assembly 36 includes: a limiting ring 361 and a tension spring 362, the limiting ring 361 is threadedly connected to the portion of the bottom slide bar 332 extending out of the bottom cabin 31; the tension spring 362 is sleeved on the portion of the bottom slide bar 332 extending out of the bottom cabin 31; one end of the tension spring 362 is rotatably fixed to the limiting ring 361, and the other end of the tension spring 362 is fixed to the upper end surface of the bottom cabin 31.

[0071] It can be understood that the tension spring 362 will apply a downward pulling force to the bottom slide rod 332 through the limiting ring 361, thereby increasing the resistance to the upward displacement of the bottom piston 331. This will increase the buffering capacity of the load-bearing component 32 for the stator structure 1 during the load-bearing process.

[0072] It should be noted that, through the rotation of the limit ring 361 on the bottom slide rod 332, the change of its own axial position will be realized, that is, the change of the tension of the tension spring 362 in the initial state will be realized, so as to realize the change of the upward displacement resistance of the bottom piston 331, which is suitable for buffering of stator structures 1 with different weights within a certain range.

[0073] Among them, the load-bearing component 32 includes: a load-bearing cabin 321, a load-bearing pad 322, a slide 323 and a sealing plate 324. The load-bearing cabin 321 and the bottom cabin 31 are fixedly connected; the load-bearing pad 322 is arranged along the upper end surface of the load-bearing cabin 321; the slide 323 is fixedly connected to the load-bearing pad 322 and is sealed and slidably inserted in the load-bearing cabin 321; the sealing plate 324 is fixedly connected to the slide 323 and is sealed and slidably inserted in the load-bearing cabin 321.

[0074] Therefore, when it is used in practice, according to the actual weight of the stator structure 1 to be borne, the height of the limit ring 361 on the bottom slide bar 332 can be changed in advance by rotating the limit ring 361 to adjust the tension of the tension spring 362 in the initial state. Then, after the stator structure 1 is placed on the load-bearing pad 322, the load-bearing pad 322, the slide 323 and the sealing plate 324 will be pressed to move toward the bottom of the load-bearing cabin 321 under the action of the stator structure 1's own weight. In this process, the hydraulic oil in the load-bearing cabin 321 will be squeezed into the bottom cabin 31 and push the bottom piston 331 upward. Under the action of the deadweight of the bottom slide bar 332, the upward displacement of the bottom piston 331 encounters a certain resistance, thereby forming a damping and buffering effect on the stator structure 1, enhancing the load-bearing and buffering capacity of the load-bearing component 32 on the stator structure 1, effectively protecting the stator structure 1, and avoiding damage due to rigid contact between it and the load-bearing component 32 during the load-bearing process. At the same time, the existence of the tension spring 362 can also actively reset the bottom piston 331 after the stator structure 1 is detached from the load-bearing component 32, so that the load-bearing pad 322, the slide 323 and the sealing plate 324 can simultaneously achieve a reset effect on the load-bearing cabin 321.

[0075] In the related art, during the transportation of the stator structure 1, when the bottom cabin 31 does not need to be removed, the force applied to the suspension rod 43 during transportation is not only the weight of the stator structure 1 itself, but also the weight of the entire stator end protection device. The abutment force of the radial abutment rod 52 on the inner wall of the stator structure 1 is less than the sum of the two weights, which can easily lead to sliding (relative rotation) between the stator structure 1 and the radial abutment rod 52 during transportation. Once the rotation occurs, the bottom load-bearing mechanism 3 at the bottom and side of the stator structure 1 can easily fall off, thus causing danger.

[0076] According to some embodiments of the present application, Figure 3 , Figure 4 and Figure 8 As shown, an elastic member is provided between the suspension rod 43 and the special-shaped rod 333, and the elastic force of the elastic member is adjustable.

[0077] Among them, the elastic part includes: a threaded rod 434 and a spring 435. The threaded rod 434 is threadedly connected to the suspension rod 43 and extends to the inside of the suspension rod 43; the spring 435 is arranged inside the suspension rod 43, and one end of its two ends is fixed to the end face of the threaded rod 434, and the other end abuts against the end face of the special-shaped rod 333.

[0078] Therefore, when it is used in practice, the threaded rod 434 can be rotated to change the length of the threaded rod 434 extending to the inside of the suspension rod 43, thereby realizing the change of the position of the spring 435 inside the suspension rod 43, and the distance between the threaded rod 434 and the special-shaped rod 333 can be changed to realize the situation that the spring 435 is squeezed, that is, the magnitude of the elastic force applied by the spring 435 to the special-shaped rod 333 in the reverse direction is changed. In this way, firstly, the buffering capacity of the load-bearing component 32 on the stator structure 1 can be enhanced in cooperation with the tension spring 362, and secondly, the elastic resistance between the spring 435 and the special-shaped rod 333 can be Next, the gravity of the stator structure 1 is applied to the threaded rod 434 in the opposite direction, and then applied to the suspension rod 43 through the threaded rod 434. In this way, the squeezing of the hydraulic oil by the top piston 431 will be increased, and the radial outward pressure applied by the hydraulic oil to the radial abutment rod 52 will be further increased. Therefore, it can be understood that at this time, the abutment force between the radial abutment rod 52 and the inner wall of the stator structure 1 will be made stronger, thereby enhancing the stability between the radial abutment rod 52 and the stator structure 1, and avoiding the dangerous situation that the bottom load-bearing mechanism 3 may fall due to the relative rotation between the two during transportation.

[0079] It should be noted that the specific models and specifications of the tension spring 362, sealing ring 432, threaded rod 434 and spring 435 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0080] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A detachable stator end protection device, mounted on a stator structure (1), the stator structure (1) comprising a lower stator (11) and an upper stator (12) which are sleeved on the outside of an inner liner (2) in a staggered manner in opposite directions, characterized in that: include: A bottom load-bearing mechanism (3), the bottom load-bearing mechanism (3) being coaxially arranged at the bottom of the stator structure (1), the bottom load-bearing mechanism (3) comprising a bottom cabin (31), a plurality of load-bearing components (32) for bearing the stator structure (1) being evenly connected to the periphery of the bottom cabin (31), the plurality of load-bearing components (32) being capable of lifting and lowering, a bottom lifting component (33) being coaxially sealed and slidingly arranged on the bottom cabin (31), a base (34) being coaxially fixedly connected to the lower end surface of the bottom cabin (31), a plurality of side protection components (35) capable of radially extending and retracting being evenly fixedly connected to the periphery of the base (34), and hydraulic oil being filled between the bottom cabin (31) and the plurality of load-bearing components (32); An axial lifting mechanism (4), the axial lifting mechanism (4) being coaxially detachably connected to the bottom cabin (31), the axial lifting mechanism (4) comprising an axial cylinder (41), one end of the axial cylinder (41) being detachably connected to the upper end surface of the bottom cabin (31), the other end of the axial cylinder (41) being threadedly connected to a lifting cylinder (42), and a suspension rod (43) being sealed and slidably inserted in the lifting cylinder (42); A convex ring (423) is coaxially fixedly connected to the upper end surface of the lifting cylinder (42), and a plurality of axial holes (424) penetrating the convex ring (423) are circumferentially arranged on the convex ring (423); One end of the suspension rod (43) inserted into the lifting cylinder (42) is fixedly connected to a top piston (431), and the top piston (431) is sealingly slidable on the lifting cylinder (42); A radial telescopic mechanism (5), wherein the radial telescopic mechanism (5) is sleeved on one end of the suspension rod (43) extending out of the lifting cylinder (42), the radial telescopic mechanism (5) comprises a driving disc (51) sleeved on the lifting cylinder (42), the driving disc (51) is sealingly rotatably connected to the lifting cylinder (42), a plurality of radial abutment rods (52) are sealingly slidably inserted on the circumferential side of the driving disc (51), an annular hole (511) is coaxially arranged on the lower end surface of the driving disc (51), the annular hole (511) and the convex ring (423) are sealingly rotatably connected, a plurality of radial slideways (512) are evenly arranged on the circumferential side of the annular hole (511), the radial slideways (512) and the radial abutment rods (52) are sealingly slidably matched, and hydraulic oil is filled between the driving disc (51) and the top piston (431).

2. A detachable stator end protection device according to claim 1, characterized in that: A connecting ring (311) is coaxially fixedly connected to the upper end surface of the bottom cabin (31), the connecting ring (311) is sleeved on the shaft core cylinder (41), and at least two locking columns (312) are symmetrically fixedly connected to the side wall of the connecting ring (311).

3. A detachable stator end protection device according to claim 1, characterized in that: A plurality of the load-bearing components (32) are arranged to extend radially along the bottom cabin (31).

4. A detachable stator end protection device according to claim 1, characterized in that: The bottom lifting assembly (33) comprises: A bottom piston (331), the bottom piston (331) sealingly sliding on the bottom cabin (31); A bottom slide bar (332), the bottom slide bar (332) is coaxially fixed to the bottom piston (331) and extends out of the bottom cabin (31); The bottom sliding rod (332) slides axially on the lifting cylinder (42); A special-shaped rod (333), the special-shaped rod (333) being coaxially fixed to the bottom sliding rod (332); A plurality of axial slide grooves (334) are uniformly arranged axially on the side wall of the bottom slide rod (332), and a bottom end of the lifting cylinder (42) and the plurality of axial slide grooves (334) are slidably matched.

5. A detachable stator end protection device according to claim 1, characterized in that: The side protection assembly (35) comprises: A radial plate (351), the radial plate (351) being fixedly connected to a side wall of the base (34); A radial sliding rod (352), the radial sliding rod (352) being slidably plugged into the radial plate (351), and the radial sliding rod (352) being arranged in an L shape; A soft pad (353) is fixedly connected to the inner side of one end of the L-shaped radial sliding rod (352) and the stator structure (1) in the same axial direction.

6. A detachable stator end protection device according to claim 2, characterized in that: At least two Z-shaped grooves (411) are symmetrically arranged on the inner wall of the shaft core cylinder (41), and the Z-shaped grooves (411) and the locking cylinder (312) are slidably fitted.

7. A detachable stator end protection device according to claim 4, characterized in that: A bottom through hole (421) is coaxially arranged on the lower end surface of the lifting cylinder (42), and a plurality of clamping blocks (422) are evenly fixedly connected to the inner wall of the bottom through hole (421) in a circumferential direction. The plurality of clamping blocks (422) and the plurality of axial sliding grooves (334) are slidably matched.

8. A detachable stator end protection device according to claim 1, characterized in that: A sealing ring (432) is provided on the sealing sleeve on the side wall of the top piston (431), and a plurality of L-shaped through holes (433) are circumferentially arranged between the upper end surface and the side wall of the top piston (431), and the sealing ring (432) covers one end of the L-shaped through hole (433).

9. A detachable stator end protection device according to claim 4, characterized in that: The suspension rod (43) is sleeved on one end of the bottom sliding rod (332) extending out of the bottom cabin (31), and the two can and only can slide axially.

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