Assembling all-in-one machine for rotor assembly machining

Abstract

The invention discloses an assembling all-in-one machine for rotor assembly machining. The assembling all-in-one machine comprises a base and a support fixed to the upper end face of the base. A servo motor is fixed to the left side of the support through a bolt, the output end of the servo motor is fixed to one end of a threaded rod, the other end of the threaded rod extends into the support and is rotationally connected with the support, and a movable base is further in threaded connection with the outer side of the threaded rod. And a clamping mechanism is arranged at the lower end of the moving seat. According to the assembling all-in-one machine for rotor assembly machining, the linkage rod drives the clamping piece to make contact with a rotor and clamp the rotor, then the first air cylinder drives the fixing disc to move upwards, then the rotor is driven to move upwards together, independent equipment for hoisting the rotor is not needed, time and labor are saved, and meanwhile the working efficiency is improved. The assembling efficiency of the rotor assembly is greatly improved, the automatic lubricating effect is achieved, lubricating oil does not need to be smeared manually, labor is saved, and the efficiency is also improved.

Description

Technical Field

[0001] The invention relates to the technical field of rotor assembly processing, in particular to an integrated assembly machine for rotor assembly processing. Background Art

[0002] The rotor assembly is usually installed on the rotor seat. The rotor can be assembled using an assembly machine only after cutting, grinding, polishing and testing the rotor. It can be used to assemble high-pressure rotors from the part level to the unit body. For example, in the patent application number "CN202211073453.8" and the name of the patent "Rotor Assembly Device", the pressing mechanism includes a clamping ring and a number of axial tension rods; the upper end face of the clamping ring cooperates with the upper end face of the rotor, and the lower end face of the clamping ring is connected to a number of axial tension rods. The clamping ring is used to apply a downward axial clamping force to the rotor; a number of axial tension rods are used to apply an upward axial clamping force to the clamping ring, and a number of axial tension rods are evenly distributed to the lower end face of the clamping ring. The strength of the axial tension rod needs to be checked by the axial force load. The axial tension rod can be easily removed to facilitate the lifting of the rotor. However, the above structure still has the following problems during actual use: The above structure applies pressure to the rotor through the clamping ring, thereby assisting in achieving the assembly effect. However, the rotor needs to be hoisted separately before installation, so separate equipment or manual operation is required. This not only greatly increases the production time and cost, but also has relatively low efficiency. It is also inconvenient to lubricate the device, resulting in the need for manual lubrication when it is installed with the rotor seat, and it is also difficult to install a rotor that has not been lubricated in advance.

[0003] Therefore, we proposed that the integrated assembly machine for rotor assembly processing can solve the above problems well. Summary of the invention

[0004] The object of the present invention is to provide an all-in-one assembly machine for rotor assembly processing, so as to solve the problem raised by the above-mentioned background technology that the rotor in the current market needs to be separately hoisted before installation, so separate equipment or manual operation is required, which not only greatly increases the production time and cost, but also has relatively low efficiency. At the same time, it is not convenient to lubricate the device, resulting in the need for manual lubrication when it is installed with the rotor seat, and it is also difficult to install a rotor that has not been lubricated in advance.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: an integrated assembly machine for rotor assembly processing, comprising a base and a bracket fixed to the upper end surface of the base; It also includes: a servo motor is fixed to the left side of the bracket by bolts, and the output end of the servo motor is fixed to one end of the threaded rod, and the other end of the threaded rod extends to the inside of the bracket and is rotatably connected to the bracket, and the outer side of the threaded rod is also threadedly connected to a moving seat; The lower end of the movable seat is provided with a clamping mechanism, and the clamping and fixing effect is achieved by squeezing between two groups of clamping parts; The front and rear sides of the movable seat are provided with a coating mechanism, and the lubricating oil in the lubricating oil containing cavity is squeezed to the sponge block, so that the sponge block absorbs the lubricating oil to achieve the purpose of lubrication.

[0006] Preferably, the clamping mechanism includes a first cylinder and a fixed plate, wherein the first cylinder is fixed to the lower end surface of the movable seat, and the lower end of the first cylinder is fixed to the fixed plate, and at the same time, a second cylinder is fixed to the lower end surface of the fixed plate, and the lower end of the second cylinder is rotatably connected to one end of a connecting rod, and the other end of the connecting rod is rotatably connected to a linkage rod.

[0007] Preferably, the upper end of the linkage rod is rotatably connected to the fixed disk, and the fixed rod inside the lower end of the linkage rod has a clamping piece, and the inner side of the clamping piece is arranged in an arc-shaped structure, thereby facilitating clamping.

[0008] Preferably, the coating mechanism comprises tooth blocks and gears, wherein the tooth blocks are evenly spaced on the lower surface of the bracket, and the tooth blocks are arranged in two rows, and the tooth blocks and the gears are meshedly connected, and the gears are fixed on the outside of the reciprocating screw.

[0009] Preferably, the reciprocating screw passes through the moving seat and forms a rotational connection with the moving seat, and the outer side of the reciprocating screw is threadedly connected to the moving rod, and the lower end of the moving rod is fixed to the connecting disk, and the connecting disk is arranged in a semicircular structure, and a sponge block is embedded in the upper surface of the connecting disk.

[0010] Preferably, an insertion rod is slidably provided through the middle of the movable rod, and the inner end of the insertion rod is fixed to the fixed plate, and a first magnet is fixed to the lower end surface of the insertion rod, and after the first magnet is displaced to a certain position, it is located on the same vertical line as the second magnet.

[0011] Preferably, the second magnet is arranged inside the moving rod and fixed to the upper end of the sliding rod, and the sliding rod is elastically slidingly connected to the moving rod through a reset spring, and the two ends of the reset spring are respectively fixed to the sliding rod and the moving rod, and an extrusion plate is provided at the lower end of the sliding rod, and a cavity is provided below the extrusion plate, and the cavity is connected to a lubricating oil containing chamber opened inside the moving rod.

[0012] Preferably, the bottom end of the lubricating oil containing cavity is communicated with the infusion channel, and the other end of the infusion channel extends to below the internal sponge block of the connecting disk.

[0013] Preferably, a support seat is provided on the right side of the upper surface of the base, and a rotor seat is placed above the support seat, and the support seat is elastically slidably connected to the base through a pressure spring, and the two ends of the pressure spring are respectively fixed to the support seat and the base, and at the same time, the outer side of the lower end of the support seat is fixed to one end of the pull rope, and the other end of the pull rope is fixed to one end of the connecting slide rod.

[0014] Preferably, the connecting slide rod is slidably arranged on both sides of the upper surface support seat of the base, and the outer side of the connecting slide rod is fixed to one end of the tension spring, and the other end of the tension spring is fixed to the base, and at the same time, a limiting ring is fixed to the inner side of the upper end of the connecting slide rod, and the limiting ring is arranged in an arc structure, and the limiting ring fits with the outer side of the rotor seat.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the integrated assembly machine for rotor assembly processing not only enables the linkage rod to drive the clamping member to contact the rotor and clamp the rotor, and then drives the fixing plate upward through the first cylinder, thereby driving the rotor upward together to achieve the purpose of moving the rotor, but also does not require a separate device to hoist the rotor, which saves time and effort, and greatly improves the efficiency of rotor assembly assembly, and achieves the effect of automatic lubrication, without the need for manual application of lubricating oil, which not only saves labor but also improves efficiency. The specific contents are as follows: The other end of the connecting rod is connected to the linkage rod through rotation, so that the linkage rod rotates inward, so that the linkage rod drives the clamping member to contact the rotor and clamp the rotor, and then the fixing plate is driven upward by the first cylinder, thereby driving the rotor upward together to achieve the purpose of moving the rotor; The threaded rod is driven to rotate by the servo motor, so that the threaded rod drives the threaded movable seat to move to the right, so that the rotor moves to the top of the rotor seat. At this time, it is only necessary to control the first cylinder to drive the fixed plate and the rotor clamped below it to dock with the rotor seat. There is no need for separate equipment to hoist the rotor, which saves time and effort and greatly improves the efficiency of rotor assembly. Air can enter the lubricating oil containing chamber through the one-way channel, so that the lubricating oil in the lubricating oil containing chamber is squeezed by the air, and then enters the connecting plate through the one-way infusion groove, and then soaks the sponge block and lubricates the lower end of the rotor, so that there is no need to apply lubricating oil manually, which not only saves labor but also improves efficiency; Furthermore, when the first magnet at the lower end of the insertion rod moves to the same vertical line as the second magnet, the repulsive force between the magnets causes the second magnet to drive the sliding rod to slide downward, so that the sliding rod can squeeze the air below it while moving downward; The weight of the rotor seat presses the support seat downward, causing the support seat to slide downward under force, thereby driving one end of the pull rope downward, causing the other end of the pull rope to pull the connecting slide rod to slide inward, thereby driving the fixed limiting ring to contact the rotor seat, thereby limiting and fixing the rotor seat, which not only achieves the effect of self-limiting, but also avoids displacement of the rotor seat during assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the structure of the bracket of the present invention when viewed from above; Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle; Figure 4 This is a schematic diagram of the main structure of the clamping mechanism of the present invention; Figure 5 It is a schematic diagram of the cross-sectional structure of the coating mechanism of the present invention; Figure 6 For the present invention Figure 5 The enlarged structural diagram at B in the middle; Figure 7 It is a schematic diagram of the cross-sectional structure of the moving rod of the present invention; Figure 8 This is a schematic diagram of the main structure of the connection between the support seat and the base of the present invention; Fig. 9 It is a schematic diagram of the cross-sectional structure of the connection between the support seat and the base of the present invention.

[0017] In the figure: 1. base; 2. bracket; 3. servo motor; 4. threaded rod; 5. limit ring; 6. moving seat; 7. first cylinder; 8. fixed plate; 9. second cylinder; 10. connecting rod; 11. linkage rod; 12. clamping member; 13. tooth block; 14. gear; 15. reciprocating screw rod; 16. moving rod; 17. connecting plate; 18. sponge block; 19. plug rod; 20. first magnet; 21. tension spring; 22. sliding rod; 23. second magnet; 24. reset spring; 25. lubricating oil containing chamber; 26. support seat; 27. rotor seat; 28. pressure spring; 29. ​​pull rope; 30. connecting slide rod. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-Figure 9 , the present invention provides the following technical solutions: Embodiment 1: In order to solve the problem in the prior art that the rotor needs to be hoisted separately before installation, separate equipment or manual operation is required, which not only greatly increases the production time and cost, but also has relatively low efficiency. At the same time, it is not convenient to lubricate the device, resulting in the need for manual lubrication when it is installed with the rotor seat 27, and the installation of the rotor that has not been lubricated in advance is also more difficult. Therefore, the following scheme is disclosed, including a base 1 and a bracket 2 fixed to the upper end surface of the base 1; it also includes: a servo motor 3 is fixed by bolts on the left side of the bracket 2, and the output end of the servo motor 3 is fixed to one end of a threaded rod 4, and the other end of the threaded rod 4 extends to the inside of the bracket 2 and is rotatably connected to the bracket 2, and the outer side of the threaded rod 4 is also threadedly connected to a movable seat 6; the lower end of the movable seat 6 is provided with a clamping mechanism, The clamping and fixing effect is achieved by squeezing between the two groups of clamping members 12; a smearing mechanism is provided on the front and rear sides of the movable seat 6, and the lubricating oil in the lubricating oil accommodating chamber 25 is squeezed to the sponge block 18, so that the sponge block 18 absorbs the lubricating oil to achieve the purpose of lubrication. The clamping mechanism includes a first cylinder 7 and a fixed plate 8, wherein the first cylinder 7 is fixed to the lower end surface of the movable seat 6, and the lower end of the first cylinder 7 is fixed to the fixed plate 8, and at the same time, a second cylinder 9 is fixed to the lower end surface of the fixed plate 8, and the lower end of the second cylinder 9 is rotatably connected to one end of the connecting rod 10, and the other end of the connecting rod 10 is rotatably connected to the linkage rod 11, the upper end of the linkage rod 11 is rotatably connected to the fixed plate 8, and the inner fixed rod of the lower end of the linkage rod 11 has a clamping member 12, and the inner side of the clamping member 12 is arranged in an arc-shaped structure, which is convenient for clamping.

[0020] First, the fixing plate 8 is driven downward by the first cylinder 7, so that the clamping parts 12 are located on both sides of the rotor, and then the second cylinder 9 is started, so that the second cylinder 9 drives one end of the connecting rod 10 upward, and the other end of the connecting rod 10 is connected to the linkage rod 11 through a rotation connection, so that the linkage rod 11 rotates inward, so that the linkage rod 11 drives the clamping part 12 to contact the rotor and clamp the rotor, and then the fixing plate 8 is driven upward by the first cylinder 7, and the rotor is driven upward together, so as to achieve the purpose of moving the rotor. At this time, it is only necessary to start the servo motor 3, so that the servo motor 3 drives the threaded rod 4 to rotate, so that the threaded rod 4 drives the threaded moving seat 6 to move to the right, so that the rotor moves to the top of the rotor seat 27. At this time, it is only necessary to control the first cylinder 7 to drive the fixing plate 8 and the rotor clamped thereunder to dock with the rotor seat 27. There is no need for separate equipment to hoist the rotor, which saves time and effort while greatly improving the efficiency of rotor assembly.

[0021] Embodiment 2: A new technical solution is added on the basis of Embodiment 1, so that there is no need to apply lubricating oil manually, which not only saves labor but also improves efficiency. For details, please refer to Figure 1-Figure 7 The smearing mechanism includes a tooth block 13 and a gear 14, wherein the tooth blocks 13 are evenly spaced on the lower surface of the bracket 2, and the tooth blocks 13 are arranged in two rows, and the tooth blocks 13 and the gears 14 are meshed and connected, and the gear 14 is fixed to the outer side of the reciprocating screw 15, the reciprocating screw 15 passes through the moving seat 6 and is rotatably connected to the moving seat 6, and the outer side of the reciprocating screw 15 is threadedly connected with a moving rod 16, and the lower end of the moving rod 16 is fixed to a connecting disk 17, and the connecting disk 17 is arranged in a semicircular structure, and a sponge block 18 is embedded on the upper surface of the connecting disk 17, and an insertion rod 19 is slidably arranged in the middle of the moving rod 16, and the inner end of the insertion rod 19 is fixed to the fixed disk 8, and the lower end surface of the insertion rod 19 is fixed A first magnet 20 is provided, and after the first magnet 20 is displaced to a certain position, it is located on the same vertical line as the second magnet 23. The second magnet 23 is arranged inside the moving rod 16 and fixed to the upper end of the sliding rod 22. The sliding rod 22 is elastically slidably connected to the moving rod 16 through a return spring 24. At the same time, the two ends of the return spring 24 are respectively fixed to the sliding rod 22 and the moving rod 16. In addition, an extrusion disk is provided at the lower end of the sliding rod 22, and a cavity is provided below the extrusion disk. The cavity is connected to a lubricating oil containing chamber 25 opened inside the moving rod 16. The bottom end of the lubricating oil containing chamber 25 is connected to the infusion channel, and the other end of the infusion channel extends to the bottom of the internal sponge block 18 of the connecting disk 17.

[0022] When the gear 14 is moved to mesh with the tooth block 13, the gear 14 will rotate, and the gear 14 will rotate to drive the reciprocating screw rod 15 to rotate together. The reciprocating screw rod 15 rotates to drive the two sets of moving rods 16 to move inward, so that the moving rod 16 drives the connecting plate 17 to dock and be located at the lower end of the rotor, so that the sponge block 18 fits with the lower end of the rotor. At the same time, the moving rod 16 moves and the insertion rod 19 will slide in the moving rod 16. When the first magnet 20 at the lower end of the insertion rod 19 moves to the same vertical line as the second magnet 23, the repulsive force between the magnets will drive the second magnet 23 to drive the sliding rod 22 to slide downward, so that the sliding rod 22 can squeeze the air below it while it is moving downward. The cavity below the sliding rod 22 adopts a separate one-way air supply port to replenish air. At the same time, the first magnet 20 and the second magnet When the stone 23 is not on the same vertical line, the sliding rod 22 can be reset by the reset spring 24 at a later stage, so as to facilitate the next use, so that air can enter the lubricating oil containing chamber 25 through the one-way channel, so that the lubricating oil in the lubricating oil containing chamber 25 is squeezed by the air, and then enters the connecting disk 17 through the one-way infusion groove, and then soaks the sponge block 18, so that the sponge block 18 absorbs the lubricating liquid and lubricates the lower end of the rotor, so that there is no need to manually apply lubricating oil, which not only saves labor but also improves efficiency, and can make the assembly of the rotor and the rotor seat 27 smoother when docking. At the same time, when the rear gear 14 is meshed with the tooth block 13 again, the reciprocating screw rod 15 will rotate again, thereby driving the moving rod 16 to move outward, and then driving the connecting disk 17 outward, so that the connecting disk 17 is no longer located below the rotor. At this time, the first cylinder 7 can drive the fixed disk 8 and the rotor clamped thereunder to move to the top of the rotor seat 27 for assembly.

[0023] Embodiment 3: A new technical solution is added on the basis of Embodiment 1, thereby achieving the effect of self-limiting and avoiding displacement of the rotor seat 27 during assembly. For details, refer to Figure 8-Figure 9 A support seat 26 is provided on the right side of the upper surface of the base 1, and a rotor seat 27 is placed above the support seat 26, and the support seat 26 is elastically slidably connected to the base 1 through a pressure spring 28, and the two ends of the pressure spring 28 are respectively fixed to the support seat 26 and the base 1, and at the same time, the outer side of the lower end of the support seat 26 is fixed to one end of the pull rope 29, and the other end of the pull rope 29 is fixed to one end of the connecting slide rod 30, the connecting slide rod 30 is slidably arranged on both sides of the support seat 26 on the upper surface of the base 1, and the outer side of the connecting slide rod 30 is fixed to one end of the tension spring 21, and the other end of the tension spring 21 is fixed to the base 1, and at the same time, a limiting ring 5 is fixed to the inner side of the upper end of the connecting slide rod 30, and the limiting ring 5 is arranged in an arc structure, and the limiting ring 5 fits with the outer side of the rotor seat 27.

[0024] The rotor seat 27 is placed on the support seat 26, and the support seat 26 is pressed downward by the weight of the rotor seat 27 itself, so that the support seat 26 is forced to slide downward, and the support seat 26 is downward, thereby driving one end of the pull rope 29 downward together, so that the other end of the pull rope 29 pulls the connecting slide bar 30 to slide inward, and moves through the connecting slide bar 30, thereby driving the fixed limit ring 5 to contact the rotor seat 27, thereby limiting and fixing the rotor seat 27, not only achieving the self-limiting effect, but also avoiding the displacement of the rotor seat 27 during assembly. At the same time, a pressure spring 28 is provided at the lower end of the support seat 26, and the pressure spring 28 can later drive the support seat 26 to reset, so that the support seat 26 is reset and one end of the pull rope 29 is driven upward together, so that the pull rope 29 no longer pulls the connecting slide bar 30 to slide inward. At this time, the connecting slide bar 30 can be pulled outward by the setting of the tension spring 21, so that the connecting slide bar 30 drives the limit ring 5 to move outward together, so that it is convenient to limit the rotor seat 27 again next time.

[0025] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0026] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An integrated assembly machine for machining a rotor assembly, comprising a base (1) and a bracket (2) fixed to an upper end surface of the base (1); It is characterized in that Also includes: A servo motor (3) is bolted to the left side of the bracket (2), and the output end of the servo motor (3) is fixed to one end of a threaded rod (4), and the other end of the threaded rod (4) extends into the inside of the bracket (2) and is rotatably connected to the bracket (2), and a movable seat (6) is also threadedly connected to the outer side of the threaded rod (4); The lower end of the movable seat (6) is provided with a clamping mechanism, which achieves a clamping and fixing effect through squeezing between two groups of clamping members (12); The front and rear sides of the movable seat (6) are provided with smearing mechanisms, which squeeze the lubricating oil in the lubricating oil receiving chamber (25) to the sponge block (18), so that the sponge block (18) absorbs the lubricating oil to achieve the purpose of lubrication.

2. The rotor assembly processing integrated machine according to claim 1, characterized in that: The clamping mechanism comprises a first cylinder (7) and a fixed plate (8), wherein the first cylinder (7) is fixed to the lower end surface of the movable seat (6), and the lower end of the first cylinder (7) is fixed to the fixed plate (8), and a second cylinder (9) is fixed to the lower end surface of the fixed plate (8), and the lower end of the second cylinder (9) is rotatably connected to one end of a connecting rod (10), and the other end of the connecting rod (10) is rotatably connected to a linkage rod (11).

3. The rotor assembly processing integrated machine according to claim 2, characterized in that: The upper end of the linkage rod (11) is rotatably connected to the fixed plate (8), and the fixed rod inside the lower end of the linkage rod (11) has a clamping piece (12), and the inner side of the clamping piece (12) is arranged in an arc-shaped structure, thereby facilitating clamping.

4. The integrated assembly machine for rotor assembly processing according to claim 1, characterized in that: The smearing mechanism comprises tooth blocks (13) and gears (14), wherein the tooth blocks (13) are distributed at equal intervals on the lower surface of the bracket (2), and the tooth blocks (13) are arranged in two rows, and a meshing connection is formed between the tooth blocks (13) and the gears (14), and the gears (14) are fixed on the outside of the reciprocating screw rod (15).

5. The rotor assembly processing integrated machine according to claim 4, characterized in that: The reciprocating screw rod (15) penetrates the movable seat (6) and is rotatably connected to the movable seat (6). The outer side of the reciprocating screw rod (15) is threadedly connected to the movable rod (16). The lower end of the movable rod (16) is fixed to a connecting disk (17). The connecting disk (17) is arranged in a semicircular structure. A sponge block (18) is embedded in the upper surface of the connecting disk (17).

6. The rotor assembly processing integrated machine according to claim 5, characterized in that: An insertion rod (19) is slidably disposed through the middle of the moving rod (16), and the inner end of the insertion rod (19) is fixed to the fixed plate (8). A first magnet (20) is fixed to the lower end surface of the insertion rod (19), and the first magnet (20) is located on the same vertical line as the second magnet (23) after being displaced to a certain position.

7. The integrated assembly machine for rotor assembly processing according to claim 6, characterized in that: The second magnet (23) is arranged inside the moving rod (16) and fixed to the upper end of the sliding rod (22), and the sliding rod (22) is elastically slidably connected to the moving rod (16) via a return spring (24), and both ends of the return spring (24) are respectively fixed to the sliding rod (22) and the moving rod (16), and a pressing plate is arranged at the lower end of the sliding rod (22), and a cavity is formed below the pressing plate, and the cavity is connected to a lubricating oil containing chamber (25) provided inside the moving rod (16).

8. The integrated assembly machine for rotor assembly processing according to claim 7, characterized in that: The bottom end of the lubricating oil containing cavity (25) is connected to the infusion channel, and the other end of the infusion channel extends to below the internal sponge block (18) of the connecting plate (17).

9. The rotor assembly processing integrated machine according to claim 1, characterized in that: A support seat (26) is provided on the right side of the upper surface of the base (1), and a rotor seat (27) is placed above the support seat (26). The support seat (26) is elastically slidably connected to the base (1) via a pressure spring (28), and the two ends of the pressure spring (28) are respectively fixed to the support seat (26) and the base (1). At the same time, the outer side of the lower end of the support seat (26) is fixed to one end of a pull rope (29), and the other end of the pull rope (29) is fixed to one end of a connecting slide rod (30).

10. The integrated assembly machine for rotor assembly processing according to claim 9, characterized in that: The connecting slide bar (30) is slidably arranged on both sides of the upper surface support seat (26) of the base (1), and the outer side of the connecting slide bar (30) is fixed to one end of the tension spring (21), and the other end of the tension spring (21) is fixed to the base (1), and at the same time, a limiting ring (5) is fixed to the inner side of the upper end of the connecting slide bar (30), and the limiting ring (5) is arranged in an arc-shaped structure, and the limiting ring (5) is matched with the outer side of the rotor seat (27).

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