Three-phase asynchronous motor and hoisting structure

Abstract

The application relates to a three-phase asynchronous motor and a hoisting structure, which comprises a machine body and a lifting ring, the machine body is provided with a mounting table, one end of the lifting ring is provided with a threaded rod, the threaded rod is threadedly connected to the mounting table, the other end of the lifting ring is provided with a notch, the end of the lifting ring close to the notch is an open end, a blocking piece for blocking the notch is arranged on the open end, the blocking piece comprises a blocking block and a spring, the blocking block slides in the open end along the length direction of the open end, the spring is used for driving the blocking block to move to the side of the mounting table and abut against the mounting table, and an inclined guide surface is arranged on the side of the blocking block close to the entrance of the notch. The notch of the lifting ring is matched with the blocking piece, so that the problem that a traditional closed-loop lifting ring cannot directly sleeve a rope ring is solved. The inclined guide surface facilitates the introduction of the rope ring, automatically positions the blocking block, after the rope ring is introduced, the spring drives the blocking block to automatically block the notch, the hoisting preparation is simplified, the rope ring is prevented from separating from the lifting ring through the notch, and the adaptability and safety are considered.

Description

Technical Field

[0001] This utility model relates to the field of motors, and in particular to a three-phase asynchronous motor and its hoisting structure. Background Technology

[0002] Lifting operations are an essential part of the production, transportation, installation and maintenance of motors, and the motor body is usually pre-installed with lifting rings as fulcrums for lifting.

[0003] Existing motor lifting rings generally adopt a complete closed-loop structure, which was originally designed primarily for hook-type lifting tools. However, in actual operation scenarios, in addition to hooks, ropes can also be used as lifting tools. The closed nature of the complete closed loop means that the rope must pass completely through the loop to achieve lifting. In order to avoid tying and untying the rope each time, operators usually pre-tie an adjustable rope loop at the end of the rope. However, the closed structure of the complete closed-loop lifting ring makes it impossible to directly slip the rope loop, resulting in the rope having to be fixed to the lifting ring in a complicated way. Utility Model Content

[0004] To enable lifting rings to better adapt to rope hoisting, this application provides a three-phase asynchronous motor and a hoisting structure.

[0005] The technical solution for a three-phase asynchronous motor and its hoisting structure provided in this application is as follows: A hoisting structure for a three-phase asynchronous motor includes a lifting ring. One end of the lifting ring has a threaded rod for installation, and the other end of the lifting ring has a notch. The end of the lifting ring near the notch is an open end. A sealing element for sealing the notch is provided on the open end. The sealing element includes a sealing block and a spring. The sealing block slides within the open end along its length. The spring drives the sealing block to move to the sealing notch. The sealing block has an inclined guide surface on the side facing the inlet of the notch.

[0006] By adopting the above technical solution, the problem of traditional closed-loop lifting rings being unable to directly slip rope loops is solved through the cooperation of the lifting ring notch and the sealing component. The inclined guide surface facilitates the introduction of the rope loop, drives the sealing block to automatically move aside, and after the rope loop enters, the spring drives the sealing block to automatically seal the notch. This simplifies lifting preparation and ensures that the rope loop does not detach from the lifting ring through the notch, thus balancing adaptability and safety.

[0007] Preferably, a first groove is formed on the outer wall of the open end along the length direction, the sealing block slides in the first groove, the sealing block is provided with a wedge-shaped block, the inner wall of the first groove has a wedge-shaped groove, the wedge-shaped block slides in the wedge-shaped groove, and the two ends of the spring abut against the end wall of the first groove and the sealing block respectively.

[0008] By adopting the above technical solution, the wedge block and the wedge groove provide stable guidance for the sealing block, prevent deviation and jamming, and the two ends of the spring abut against the sliding groove and the sealing block to ensure uniform driving force, maintain the closed state of the lifting ring, and improve lifting safety.

[0009] Preferably, a force-applying groove is formed on the outer wall of the sealing block.

[0010] By adopting the above technical solution, the force application groove provides operators with a convenient point of force application, which can easily push the sealing block and facilitate the removal of the rope loop from the lifting ring.

[0011] Preferably, the sealing block has a groove for accommodating the spring at one end, and the end of the spring near the sealing block abuts against the bottom wall of the groove.

[0012] By adopting the above technical solution, the groove can position the spring, preventing its lateral displacement and ensuring accurate driving force direction; at the same time, it reduces the contact between the spring and impurities, extending its service life. Furthermore, it increases the contact area between the spring and the sealing block, making the force more uniform and improving sealing and sliding stability.

[0013] Preferably, the middle part of the lifting ring is a load-bearing part, and the load-bearing part has a rope support member for loosening the rope loop fastened to the load-bearing part when disassembling the rope loop.

[0014] By adopting the above technical solution, the rope support can loosen the tightly tied rope loops during disassembly. Especially for some thinner rope loops that are difficult to loosen when fastened to the lifting ring, another auxiliary method can be used in addition to manually loosening the rope loops to reduce the difficulty of loosening them.

[0015] Preferably, the rope support includes a driving member, a support block, and an elastic membrane. A first groove is formed on the outer side wall of the load-bearing part. The support block slides in the first groove. The opening of the first groove expands outward and forms a closed groove. The edge of the elastic membrane is fixed in the closed groove. When no external force is applied, the elastic membrane is always flush with the surface of the load-bearing part. The driving member is used to drive the support block to move, and the support block is used to open the rope loop.

[0016] By adopting the above technical solution, the closed groove fixes the edge of the elastic membrane, preventing it from falling off and shifting, while taking into account both the function of the support rope and the stability of the hoisting force. When the drive component extends the support block, it can push up the elastic membrane and open the rope loop.

[0017] Preferably, the driving component includes a driving rod, a stop block, and a force application handle. The driving rod is threadedly connected to the load-bearing part, and the axial direction of the driving rod is perpendicular to the sliding direction of the support block. The stop block is fixed to one end of the driving rod near the support block, and the other end of the driving rod away from the stop block extends to the outside of the load-bearing part and is fixedly connected to the force application handle. An inclined surface is provided on the support block, and the end of the stop block is set in a frustum-shaped configuration that matches the inclined surface. The end of the stop block is used to abut against the inclined surface.

[0018] By adopting the above technical solution, the threaded connection of the drive rod is easy to operate and can be self-locking, ensuring the stability of the support block position; the frustum-shaped stop block cooperates with the inclined surface to convert the axial force into the radial force, accurately control the extension distance of the support block, and adapt to different rope rings; the force application handle allows the user to turn the drive rod to open the rope ring, and then drive the support block to reset, so that the rope ring is already in a loose state, which can be easily disassembled.

[0019] This application also provides a three-phase asynchronous motor with the following technical solution: A three-phase asynchronous motor includes a hoisting structure and a body, the body having a mounting platform, a threaded rod being threadedly connected to the mounting platform, and a spring driving a sealing block to move to abut against the mounting platform.

[0020] The main technical effects of this utility model are reflected in the following aspects: 1. This utility model solves the problem that traditional closed-loop lifting rings cannot directly fit rope loops by using a lifting ring notch and a sealing component. The inclined guide surface facilitates the introduction of the rope loop, drives the sealing block to automatically move aside, and after the rope loop enters, the spring drives the sealing block to automatically seal the notch. This simplifies lifting preparation and ensures that the rope loop does not detach from the lifting ring from the notch, thus balancing adaptability and safety. 2. The wedge block and wedge groove of this utility model provide stable guidance for the sealing block, prevent deviation and jamming, and the two ends of the spring abut against the sliding groove and the sealing block to ensure uniform driving force, maintain the closed state of the lifting ring, and improve the safety of lifting. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the lifting ring in Embodiment 1 of this application.

[0022] Figure 2 It is along Figure 1 A cross-sectional view along line AA in the middle.

[0023] Figure 3 It is along Figure 1 A cross-sectional view along the BB line.

[0024] Figure 4 This is a schematic diagram of the overall structure of Embodiment 2 of this application.

[0025] Explanation of reference numerals in the attached drawings: 1. Body; 11. Mounting platform; 2. Lifting ring; 21. Threaded rod; 22. Notch; 23. Open end; 231. First groove; 232. Wedge groove; 24. Load-bearing part; 241. First groove; 242. Sealing groove; 3. Sealing component; 31. Sealing block; 311. Guide surface; 312. Wedge block; 313. Force application groove; 314. Groove; 32. Spring; 4. Support rope component; 41. Support block; 411. Inclined surface; 42. Elastic membrane; 43. Drive rod; 44. Abutment block; 45. Force application handle. Detailed Implementation

[0026] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail to make the technical solution of this application easier to understand and master.

[0027] This application discloses a three-phase asynchronous motor and its hoisting structure. Example 1

[0028] Reference Figure 1 and Figure 2 The hoisting structure of a three-phase asynchronous motor in this embodiment includes a lifting ring 2. One end of the lifting ring 2 has a threaded rod 21 for installation, and the other end of the lifting ring 2 has a notch 22. The end of the lifting ring 2 near the notch 22 is an open end 23. A sealing element 3 for sealing the notch 22 is provided on the open end 23. The sealing element 3 includes a sealing block 31 and a spring 32. The sealing block 31 slides in the open end 23 along the length direction of the open end 23. The spring 32 is used to drive the sealing block 31 to move to the sealing notch 22. An inclined guide surface 311 is provided on the side of the sealing block 31 facing the inlet of the notch 22.

[0029] Reference Figure 1 and Figure 2 By using the notch 22 of the lifting ring 2 in conjunction with the sealing component 3, the problem of the traditional closed-loop lifting ring 2 being unable to directly fit the rope loop is solved. The inclined guide surface 311 facilitates the introduction of the rope loop and drives the sealing block 31 to automatically move aside. After the rope loop enters, the spring 32 drives the sealing block 31 to automatically seal the notch 22, which simplifies the lifting preparation and ensures that the rope loop does not detach from the lifting ring 2 from the notch 22, thus taking into account both adaptability and safety.

[0030] Reference Figure 1 and Figure 2 A first groove 231 is provided on the outer wall of the open end 23 along the length direction. The sealing block 31 slides in the first groove 231. A wedge block 312 is provided on the sealing block 31. A wedge groove 232 is provided on the inner wall of the first groove 231. The wedge block 312 slides in the wedge groove 232. The two ends of the spring 32 abut against the end wall of the first groove 231 and the sealing block 31, respectively.

[0031] Reference Figure 1 and Figure 2 The wedge block 312 and the wedge groove 232 provide stable guidance for the sealing block 31, preventing deviation and jamming. The two ends of the spring 32 abut against the sliding groove and the sealing block 31 to ensure uniform driving force, maintain the closed state of the lifting ring 2, and improve lifting safety.

[0032] Reference Figure 1 and Figure 2A force-applying groove 313 is provided on the outer wall of the sealing block 31. The force-applying groove 313 provides a convenient force-applying point for the operator, which can easily push the sealing block 31 and facilitate the removal of the rope loop from the lifting ring 2.

[0033] Reference Figure 1 and Figure 2 The sealing block 31 has a groove 314 for accommodating the spring 32 at one end facing the spring 32, and the end of the spring 32 near the sealing block 31 abuts against the bottom wall of the groove 314.

[0034] Reference Figure 1 and Figure 2 The groove 314 positions the spring 32, preventing it from shifting laterally and ensuring precise direction of the driving force. It also reduces contact between the spring 32 and impurities, extending its service life. Furthermore, it increases the contact area between the spring 32 and the sealing block 31, making the force more even and improving sealing and sliding stability.

[0035] Reference Figures 1-3 The middle part of the lifting ring 2 is the load-bearing part 24, and the load-bearing part 24 has a rope support 4, which is used to loosen the rope loop fastened to the load-bearing part 24 when disassembling the rope loop.

[0036] Reference Figures 1-3 The rope support 4 can loosen the tightened rope loops during disassembly. Especially for some thinner rope loops that are difficult to loosen when fastened to the lifting ring 2, it can provide an auxiliary method in addition to manually loosening the rope loops, reducing the difficulty of loosening the rope loops.

[0037] Reference Figures 1-3 The rope support component 4 includes a driving component, a support block 41, and an elastic membrane 42. A first groove 241 is provided on the outer side wall of the load-bearing part 24. The support block 41 slides in the first groove 241. The opening of the first groove 241 is expanded outward and a closed groove 242 is provided. The edge of the elastic membrane 42 is fixed in the closed groove 242. When there is no external force, the elastic membrane 42 is always flush with the surface of the load-bearing part 24. The driving component is used to drive the support block 41 to move, and the support block 41 is used to open the rope loop.

[0038] Reference Figures 1-3 The closed groove 242 fixes the edge of the elastic membrane 42 to prevent it from falling off and shifting, while taking into account both the function of supporting the rope and the stability of the lifting force. When the drive component extends the support block 41, it can push up the elastic membrane 42 to open the rope loop.

[0039] Reference Figures 1-3The driving component includes a driving rod 43, a stop block 44, and a force application handle 45. The driving rod 43 is threadedly connected to the load-bearing part 24. The axial direction of the driving rod 43 is perpendicular to the sliding direction of the support block 41. The stop block 44 is fixed to one end of the driving rod 43 near the support block 41. The other end of the driving rod 43 away from the stop block 44 extends to the outside of the load-bearing part 24 and is fixedly connected to the force application handle 45. An inclined surface 411 is provided on the support block 41. The end of the stop block 44 is set in a frustum shape that matches the inclined surface 411. The end of the stop block 44 is used to abut against the inclined surface 411.

[0040] Reference Figures 1-3 The threaded connection of the drive rod 43 facilitates operation and is self-locking, ensuring the stability of the support block 41. The frustum-shaped stop block 44 cooperates with the inclined surface 411 to convert axial force into radial force, precisely controlling the extension distance of the support block 41 and adapting to different rope loops. The force application handle 45 allows the user to rotate the drive rod 43 to open the rope loop, and then drive the support block 41 to reset, so that the rope loop is already in a loose state and can be easily disassembled. Example 2

[0041] Reference Figure 1 and Figure 4 This embodiment of a three-phase asynchronous motor includes a hoisting structure and a body 1. The body 1 has a mounting platform 11, a threaded rod 21 is threadedly connected to the mounting platform 11, and a spring 32 drives a sealing block 31 to move and abut against the mounting platform 11. The body 1 also has a stator, rotor, and shaft, etc. The three-phase asynchronous motor itself is a mature existing technology and will not be described in detail here.

[0042] Of course, the above are just typical examples of this application. In addition, this application may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed in this application.

Claims

1. A hoisting structure for a three-phase asynchronous motor, characterized in that: The device includes a lifting ring (2), one end of which has a threaded rod (21) for installation, and the other end of which has a notch (22). The end of the lifting ring (2) near the notch (22) is an open end (23). The open end (23) is provided with a sealing element (3) to seal the notch (22). The sealing element (3) includes a sealing block (31) and a spring (32). The sealing block (31) slides within the open end (23) along the length direction of the open end (23). The spring (32) is used to drive the sealing block (31) to move to the sealing notch (22). The sealing block (31) has an inclined guide surface (311) on the side facing the inlet of the notch (22).

2. The hoisting structure for a three-phase asynchronous motor according to claim 1, characterized in that: A first groove (231) is provided on the outer wall of the open end (23) along the length direction. The sealing block (31) slides in the first groove (231). A wedge block (312) is provided on the sealing block (31). A wedge groove (232) is provided on the inner wall of the first groove (231). The wedge block (312) slides in the wedge groove (232). The two ends of the spring (32) abut against the end wall of the first groove (231) and the sealing block (31), respectively.

3. The hoisting structure for a three-phase asynchronous motor according to claim 1, characterized in that: The sealing block (31) has a force-applying groove (313) on its outer side wall.

4. The hoisting structure for a three-phase asynchronous motor according to claim 1, characterized in that: The sealing block (31) has a groove (314) for accommodating the spring (32) at one end facing the spring (32), and the end of the spring (32) near the sealing block (31) abuts against the bottom wall of the groove (314).

5. The hoisting structure for a three-phase asynchronous motor according to claim 1, characterized in that: The middle part of the lifting ring (2) is a load-bearing part (24), and the load-bearing part (24) has a rope support (4) for loosening the rope loop fastened to the load-bearing part (24) when disassembling the rope loop.

6. The hoisting structure for a three-phase asynchronous motor according to claim 5, characterized in that: The rope support member (4) includes a driving member, a support block (41) and an elastic membrane (42). The outer side wall of the load-bearing part (24) is provided with a first groove (241). The support block (41) slides in the first groove (241). The opening of the first groove (241) is expanded outward and a closed groove (242) is provided. The edge of the elastic membrane (42) is fixed in the closed groove (242). When there is no external force, the elastic membrane (42) is always flush with the surface of the load-bearing part (24). The driving member is used to drive the support block (41) to move. The support block (41) is used to open the rope loop.

7. The hoisting structure for a three-phase asynchronous motor according to claim 6, characterized in that: The driving component includes a driving rod (43), a stop block (44), and a force application handle (45). The driving rod (43) is threadedly connected to the load-bearing part (24). The axial direction of the driving rod (43) is perpendicular to the sliding direction of the support block (41). The stop block (44) is fixed to one end of the driving rod (43) near the support block (41). The end of the driving rod (43) away from the stop block (44) extends to the outside of the load-bearing part (24) and is fixedly connected to the force application handle (45). An inclined surface (411) is provided on the support block (41). The end of the stop block (44) is set in a frustum shape that matches the inclined surface (411). The end of the stop block (44) is used to abut against the inclined surface (411).

8. A three-phase asynchronous motor, using the hoisting structure described in any one of claims 1-7, characterized in that: It also includes a body (1) having a mounting platform (11) on the body (1), the threaded rod (21) being threadedly connected to the mounting platform (11), and the spring (32) driving the sealing block (31) to move to abut against the mounting platform (11).

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