Magnetic steel surface mounting device

Abstract

The utility model discloses a surface-mounted magnetic steel device which comprises a handle plate, a pressing plate, a screw rod, a plurality of first pins and a plurality of second pins. A handle plate through hole is formed in the middle of the handle plate, a first nut is fixedly connected to the middle of the handle plate, the screw penetrates through the handle plate through hole in the middle of the handle plate and is in threaded connection with the first nut, and the bottom of the screw is rotationally connected with the middle of the pressing plate. A plurality of first pin holes and second pin holes are formed in the handle plate, a plurality of first pin holes and second pin holes are formed in the pressing plate, the first pin is fixedly connected with the first pin holes in the handle plate, the first pin is connected with the first pin holes in the pressing plate in a sliding mode, the second pin is connected with the second pin holes in the handle plate in a sliding and rotating mode, and a shaft shoulder is arranged on the lower middle portion of the second pin. The lower portion of a shaft shoulder of the second pin is connected with a second pin hole in the pressing plate in a sliding and rotating mode. Threads are arranged on the outer surface of the bottom of the second pin. The surface-mounted magnetic steel device can accurately guide and mount the magnetic pole module to the rotor bracket, and avoids the risk caused by assembling the magnetic pole module by using the existing simple tool.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic steel assembly, in particular to a surface mounted magnetic steel device, which is used for installing a magnetic pole module of a rotor magnetic pole during the assembly process of a marine generator. Background Art

[0002] The main steps of the existing marine generator magnet assembly process are: use simple tooling to install the pole module on the rotor bracket in sequence, and then install bolts at the fixed points on the pole module. This method has the following problems: 1. The pole module has a strong repulsive force, which makes it difficult for two adjacent pole modules to fit tightly; 2. Since the pole module is not fixed with tooling, it is easy to be adsorbed with other metal structures during assembly. When the repulsive force between the poles is too large, the pole module is easy to flip, which poses a safety hazard; 3. There is no guide device, which makes it impossible to accurately align the assembly holes on the pole module with the assembly holes on the rotor bracket when the pole module is assembled to the surface of the rotor bracket. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a surface mounted magnetic steel device in view of the deficiencies of the above-mentioned prior art. The surface mounted magnetic steel device can accurately guide the installation of the magnetic pole module to the rotor bracket, avoiding the risks of assembling the magnetic pole module with the existing simple tooling.

[0004] In order to achieve the above technical purpose, the technical solution adopted by the utility model is:

[0005] A surface mounted magnetic steel device comprises a handle plate, a pressing plate, a screw rod, a plurality of first pins and a plurality of second pins;

[0006] A handle plate through hole is provided in the middle of the handle plate, and a nut 1 is fixedly connected to the middle of the handle plate, the screw rod passes through the handle plate through hole in the middle of the handle plate and is threadedly connected to the nut 1, and the bottom of the screw rod is rotatably connected to the middle of the pressure plate;

[0007] The handle plate is provided with a plurality of pin holes 1 and 2, the pressing plate is provided with a plurality of pin holes 1 and 2, pin 1 is fixedly connected to pin hole 1 on the handle plate, pin 1 is slidably connected to pin hole 1 on the pressing plate, pin 2 is slidably and rotatably connected to pin hole 2 on the handle plate, a shaft shoulder is provided at the middle and lower part of pin 2, and the lower part of the shaft shoulder of pin 2 is slidably and rotatably connected to pin hole 2 on the pressing plate;

[0008] The outer surface of the bottom of the pin 2 is provided with a thread for threaded connection with the threaded hole on the magnetic pole module; the bottom of the pin 1 is used for plugging with the through hole on the magnetic pole module.

[0009] As a further improved technical solution of the utility model, the middle part of the handle plate is fixedly connected to the nut by bolts; handle holes are provided on both sides of the handle plate; and lifting ears are fixedly connected to the handle plate.

[0010] As a further improved technical solution of the utility model, two pin holes 1 and one pin hole 2 are opened on one side of the middle part of the handle plate, and one pin hole 2 is located between the two pin holes 1; two pin holes 1 and one pin hole 2 are opened on the other side of the middle part of the handle plate, and one pin hole 2 is located between the two pin holes 1;

[0011] One side of the pressure plate is provided with two pin holes one and one pin hole two, and one pin hole two is located between the two pin holes one; the other side of the pressure plate is provided with two pin holes one and one pin hole two, and one pin hole two is located between the two pin holes one.

[0012] As a further improved technical solution of the utility model, a pressing plate through hole is opened in the middle of the pressing plate, and a sleeve is fixedly connected in the pressing plate through hole, and the bottom of the screw is rotatably connected to the sleeve through a bearing.

[0013] As a further improved technical solution of the utility model, the screw rod is composed of a polygonal head, a screw rod segment, a bare rod segment, a lower threaded segment and a pin segment, which are connected in sequence, wherein the screw segment is threadedly connected to the nut, a bearing retaining ring is connected to the connecting position of the bare rod segment and the screw segment, the bare rod segment is rotatably connected to the sleeve through a bearing, the lower threaded segment is threadedly connected to the slotted nut, a socket is provided on the pin segment, and a pin is jointly inserted into the slot on the slotted nut and the socket on the pin segment.

[0014] As a further improved technical solution of the utility model, there are four pins one and two pins two.

[0015] As a further improved technical solution of the utility model, the pin one is formed by an upper threaded section, a sliding section, a magnetic steel connecting section and a guide section connected in sequence, the outer diameter of the sliding section is larger than the outer diameter of the magnetic steel connecting section, and the outer diameter of the magnetic steel connecting section is larger than the outer diameter of the guide section; wherein the upper threaded section passes through the pin hole one on the handle plate and is threadedly connected with the nut two to achieve a fixed connection between the pin one and the pin hole one on the handle plate, a sliding sleeve is fixedly connected in the pin hole one on the pressure plate, the sliding section is slidably connected to the sliding sleeve on the pressure plate, the magnetic steel connecting section is used to be plugged into the through hole on the magnetic pole module, and the guide section is used to be inserted into the threaded hole on the rotor bracket.

[0016] As a further improved technical solution of the utility model, a sliding sleeve is fixedly connected in the second pin hole on the handle plate, and the second pin is slidably and rotatably connected to the sliding sleeve on the handle plate. The second pin hole on the pressure plate is fixedly connected with the sliding sleeve, and the lower part of the shoulder of the second pin is slidably and rotatably connected to the sliding sleeve on the pressure plate.

[0017] As a further improved technical solution of the utility model, a circle of grooves is provided on the outer surface of the bottom of the pin 2, the grooves are located above the threads at the bottom of the pin 2, and a retaining ring is connected in the grooves.

[0018] The beneficial effects of the utility model are:

[0019] In the past, the tooling lacked a guiding device. During the assembly of the pole module, due to the repulsive force between the pole modules and the different distances between the pole module and the rotor bracket, there will be repulsive force and adsorption force. Therefore, during assembly, the pole module is difficult to align with the threaded mounting holes on the rotor bracket. The pins in the device of the utility model play a guiding role. The four pins are inserted into the openings on the four corners of the pole module. During assembly, the four pins are repeatedly inserted into the threaded mounting holes on the rotor bracket to achieve precise positioning, avoiding the problems of misalignment of the pole module installation, gaps, and inability to align the mounting holes.

[0020] In the past, during the assembly process, workers had to hold simple tooling and pole modules for assembly. Due to the heavy weight, there was a risk of the pole module falling. The device of the utility model is equipped with a handle plate, and a handle hole is provided on the handle plate to form a handle. The handle has a lifting lug, and the surface-mounted magnetic steel device carrying the pole module can be lifted by a cantilever crane, which reduces the weight and is easier to operate. At the same time, arc-shaped edges are designed at both ends of the handle of the handle plate, which is convenient for workers to hold and improves the stability during the assembly process. The screw in the middle of the handle plate can be equipped with a pneumatic wrench connection device, and the hexagonal head of the screw can be rotated with a pneumatic wrench, so that the screw rotates and moves downward in the nut, and the screw drives the pressure plate to move downward. The pressure plate will not rotate but will only move downward with the screw. The pressure plate pushes the pole module onto the rotor bracket to make the propulsion process more reliable and efficient.

[0021] Due to the strong repulsive force between the pole modules, a pressure plate is required to push the pole module onto the rotor bracket during the process of pushing the magnet. The pressure plate is located between the handle plate and the pole module during the assembly process. By using a pneumatic wrench to act on the screw in the middle of the handle, the pressure plate can slide on pin one, that is, the position can be freely adjusted. During the assembly process, after the two threaded holes in the middle of the pole module are connected to the bottom of pin two, the pneumatic wrench can be used to push the pole module to the rotor bracket and press it tightly, which prevents the pole module from flipping, offsetting and other problems during the installation process, making it easier to press and ensure that it will not cause damage to the surface of the pole module.

[0022] The screw of the utility model uses a pneumatic wrench as a power source to adjust the distance between the pressure plate and the handle plate, so as to meet the pushing and pressing of the magnetic pole module. The screw can have a large transmission ratio to provide sufficient thrust and a more controllable propulsion speed, which saves manpower loss in the assembly process and improves work efficiency and safety.

[0023] The bottom of the pin 2 of the utility model is designed with a thread. When the pole module is fixed to the surface mounted magnetic steel device, the two threaded holes in the middle of the pole module are tightened with the pin 2 to achieve the function of fixing the pole module, preventing the module from falling during the transportation of the pole module, and eliminating the risk of the pole module turning over and misaligning during the assembly process. When the pole module is pushed to the rotor bracket, the pin 1 is fixed, and the bottom of the pin 2 is unscrewed from the threaded hole of the pole module with a wrench, and the screw is turned with a pneumatic wrench to adjust the pressure plate to raise, and the bolts and washers are screwed into the threaded holes of the pole module and the corresponding threaded holes of the rotor bracket, and the pin 1 is withdrawn from the hole of the pole module, that is, the surface mounted magnetic steel device is removed, and bolts are installed in the threaded holes in the remaining holes of the pole module corresponding to the rotor bracket.

[0024] In summary, the utility model provides a new surface-mounted magnetic steel device, which can fix the pole module to the device, and then accurately guide the installation of the pole module to the rotor bracket, and finally install fasteners (such as bolts) to fix the pole module and the rotor bracket, avoiding the risks of previous operations, that is, the problems raised in the background technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is the front view of the surface mounted magnetic device.

[0026] Figure 2 This is the left side view of the surface mounted magnetic device.

[0027] Figure 3 A top view of the surface mounted magnetic device.

[0028] Figure 4 for Figure 1 Cross-section view of AA.

[0029] Figure 5 This is a structural schematic diagram of pin one.

[0030] Figure 6 It is a schematic diagram of the structure of the handle plate.

[0031] Figure 7 for Figure 6 Cross-section of the BB.

[0032] Figure 8 It is a structural schematic diagram of the pressure plate.

[0033] Fig. 9 for Figure 8 Cross-section of CC.

[0034] Fig.10 Schematic diagram of the screw structure.

[0035] Fig.11 for Fig.10 Cross-section of DD.

[0036] Fig.12 This is a schematic diagram of the structure of pin 2. DETAILED DESCRIPTION

[0037] The specific implementation of the utility model is further described below according to the accompanying drawings:

[0038] like Figure 1-3 As shown, a surface mounted magnetic steel device includes a handle plate 1, a pressure plate 2, a screw rod 3, a plurality of pins 1 4 and a plurality of pins 2 5, etc.

[0039] like Figure 6-7 As shown, a handle plate through hole 101 is provided in the middle of the handle plate 1, and a plurality of handle plate threaded holes 102 in the middle of the handle plate 1 are fixedly connected with a nut 8 through a bolt 13. The nut 8 is a brass nut. The screw rod 3 passes through the handle plate through hole 101 in the middle of the handle plate 1 and is threadedly connected with the nut 8. Handle holes 105 are provided on both sides of the handle plate 1; and a lifting ear 14 is fixedly connected to the handle plate 1. The lifting ear 14 is connected to the handle plate 1 through a bolt 13 and a washer 11.

[0040] like Figure 8-9 As shown, a pressing plate through hole 201 is opened in the middle of the pressing plate 2, and a sleeve 6 is fixedly connected to the pressing plate through hole 201 by glue. A circle groove is provided on the outer circumferential surface of the sleeve 6, and a ring 7 is installed in the groove. The ring 7 contacts the pressing plate 2 and is used to limit the pressing plate 2. The bottom of the screw 3 is rotatably connected to the sleeve 6 through a bearing 19.

[0041] like Figure 6-7 As shown, two pin holes 103 and one pin hole 2 104 are opened on one side of the middle of the handle plate 1, and the one pin hole 2 104 is located between the two pin holes 103; two pin holes 103 and one pin hole 2 104 are opened on the other side of the middle of the handle plate 1, and the one pin hole 2 104 is located between the two pin holes 103. Figure 8-9 As shown, two pin holes 103 and one pin hole 2 104 are provided on one side of the pressing plate 2, and one pin hole 2 104 is located between the two pin holes 103; two pin holes 103 and one pin hole 2 104 are provided on the other side of the pressing plate 2, and one pin hole 2 104 is located between the two pin holes 103. There are four pins 1 4 in total, and two pins 2 5 in total.

[0042] like Figure 5As shown, the pin 4 is composed of an upper threaded section 401, a sliding section 402, a magnetic steel connecting section 403 and a guide section 404 connected in sequence, the outer diameter of the sliding section 402 is larger than the outer diameter of the magnetic steel connecting section 403, and the outer diameter of the magnetic steel connecting section 403 is larger than the outer diameter of the guide section 404; wherein, the upper threaded section 401 passes through the pin hole 103 on the handle plate 1 and is threadedly connected with the nut 2 10 to achieve a fixed connection between the pin 4 and the pin hole 103 on the handle plate 1, a washer 11 is provided between the nut 2 10 and the handle plate 1, a sleeve 9 is fixedly connected in the pin hole 103 on the pressure plate 2, the sliding section 402 is slidably connected to the sleeve 9 on the pressure plate 2, the magnetic steel connecting section 403 is used to be plugged into the through hole on the magnetic pole module, and the guide section 404 is used to be inserted into the threaded hole on the rotor bracket.

[0043] The second pin hole 104 on the handle plate 1 is fixedly connected with a sleeve 9, and the second pin 5 is slidably and rotatably connected to the sleeve 9 on the handle plate 1. The second pin hole 104 on the pressure plate 2 is fixedly connected with a sleeve 9, and a shoulder 503 is provided at the middle and lower part of the pin 5, and the lower part of the shoulder 503 of the pin 5 is slidably and rotatably connected to the sleeve 9 on the pressure plate 2.

[0044] The outer surface of the bottom of the pin 5 is provided with a thread 502 for threaded connection with the threaded hole on the magnetic pole module. The outer surface of the bottom of the pin 5 is provided with a circle of grooves 501, and the groove 501 is located above the thread 502 at the bottom of the pin 5. A retaining ring 12 is connected in the groove. The retaining ring 12 can be a spring retaining ring, which is used to limit the pressure plate 2 to prevent the pressure plate 2 from being separated from the pin 5.

[0045] like Figure 10-11 As shown, the screw 3 is composed of a hexagonal head 301, a screw segment 302, a bare rod segment 303, a lower thread segment 304 and a pin segment 305 connected in sequence, wherein the screw segment 302 is threadedly connected to the nut 8, and the bare rod segment 303 is connected to the screw segment 302 at a connection position as shown in FIG. Figure 4 In the bearing retainer 15 shown, the bare rod section 303 is rotatably connected with the sleeve 6 through the bearing 19, the lower threaded section 304 is threadedly connected with the slotted nut 17, and the plug section 305 is provided with a plug hole 3051, and the plug hole 3051 is connected with the plug 18, specifically, the plug 18 is sequentially inserted into the slot on the slotted nut 17 and the plug hole 3051. The plug 18 prevents the slotted nut 17 from loosening and the bearing 19 from falling.

[0046] In the past, the tooling lacked a guide device. During the assembly of the pole module, due to the repulsive force between the pole modules and the different distances between the pole module and the rotor bracket, there will be repulsive force and adsorption force, so during assembly, the pole module is difficult to align with the threaded mounting holes on the rotor bracket. The pin 4 of this embodiment plays a guiding role. The four pins 4 are inserted into the openings on the four corners of the pole module. During assembly, the four pins 4 are then inserted into the threaded mounting holes on the rotor bracket to achieve precise positioning, avoiding the problems of misalignment of the pole module installation, the existence of gaps, and the inability to align the mounting holes.

[0047] In the past, during the assembly process, workers had to hold simple tooling and the pole module for assembly. Due to the heavy weight, there was a risk of the pole module falling. The device of this embodiment is equipped with a handle plate 1, and the handle plate 1 is provided with a handle hole 105 to form a handle. The handle has a lifting lug 14, and the surface-mounted magnetic steel device carrying the pole module can be lifted by a cantilever, which reduces the weight and is easier to operate. At the same time, the handles of the handle plate 1 are designed with arc edges at both ends, which are convenient for workers to hold and improve the stability during the assembly process. The screw 3 in the middle of the handle plate 1 can be equipped with a pneumatic wrench connection device, and the hexagonal head 301 of the screw 3 can be rotated with a pneumatic wrench, so that the screw 3 rotates and moves downward in the nut 8, and the screw 3 drives the pressure plate 2 to move downward. The pressure plate 2 will not rotate but will only move downward with the screw 3. The pressure plate 2 pushes the pole module onto the rotor bracket to make the propulsion process more reliable and efficient.

[0048] Due to the strong repulsive force between the pole modules, the pressure plate 2 is required to push the pole module onto the rotor bracket during the process of pushing the magnet. The pressure plate 2 is located between the handle plate 1 and the pole module during the assembly process. By using a pneumatic wrench to act on the screw 3 in the middle of the handle, the pressure plate 2 can slide on the pin 1 4, that is, the position can be freely adjusted. During the assembly process, after connecting the two threaded holes in the middle of the pole module with the bottom thread 502 of the pin 2 5, the pole module can be pushed to the rotor bracket with a pneumatic wrench and pressed tightly, which prevents the pole module from flipping over, offsetting, and other problems during the installation process. It is easier to press and ensure that it will not cause damage to the surface of the pole module.

[0049] The screw rod 3 of this embodiment uses a pneumatic wrench as a power source to adjust the distance between the pressure plate 2 and the handle plate 1, so as to meet the requirements of pushing and pressing the magnetic pole module. The screw rod 3 can have a larger transmission ratio to provide sufficient thrust and a more controllable propulsion speed, which saves manpower loss during the assembly process and improves work efficiency and safety.

[0050] The bottom of pin 2 5 of this embodiment is designed with a thread 502. When fixing the pole module to the surface mounted magnetic steel device, the two threaded holes in the middle of the pole module are tightened with pin 2 5 to fix the pole module, prevent the pole module from falling during transportation, and eliminate the risk of the pole module flipping out and misalignment during assembly. When pushing the pole module to the rotor bracket, pin 1 4 is fixed, and the bottom of pin 2 5 is unscrewed from the threaded hole of the pole module with a wrench, and the screw 3 is turned with a pneumatic wrench to adjust the pressure plate 2 to rise. Bolts and washers are used to screw into the threaded holes of the pole module and the threaded holes corresponding to the rotor bracket, and pin 1 4 is withdrawn from the hole of the pole module, that is, the surface mounted magnetic steel device is removed, and bolts 13 are installed in the threaded holes corresponding to the rotor bracket in the remaining holes of the pole module.

[0051] There are 6 holes on the magnetic pole module in this embodiment, of which the holes at 4 corners are plain holes and the remaining 2 holes are threaded holes.

[0052] The working process of this embodiment is specifically as follows:

[0053] Align the four pins 4 in the surface mounted magnetic steel device with the openings on the four corners of the magnetic pole module respectively, and then rotate the pins 25 respectively to thread the thread 502 at the bottom of the pins 25 with the two threaded holes on the magnetic pole module, so that the magnetic pole module is connected to the surface mounted magnetic steel device. At this time, the magnetic steel connecting sections 403 of the four pins 4 pass through the openings on the four corners of the magnetic pole module; lift the surface mounted magnetic steel device and the magnetic pole module by the lifting device, manually hold the handle in the surface mounted magnetic steel device, and then move the surface mounted magnetic steel device to the position where the rotor bracket is located, insert the guide sections 404 at the bottom of the four pins 4 in the surface mounted magnetic steel device into the corresponding four threaded holes on the rotor bracket, and use a pneumatic wrench to rotate the hexagonal head 301 of the screw 3. While the screw 3 rotates in the nut 8, it drives the pressure plate 2 to move downward and press the magnetic pole module, so that the magnetic pole module is attached to the rotor bracket. 1, and then rotate pin 2 5 to unscrew the bottom of pin 2 5 from the two threaded holes on the pole module, and use a pneumatic wrench to rotate the hexagonal head 301 of the screw rod 3 in the opposite direction. The screw rod 3 rotates in the nut 1 8 and drives the pressure plate 2 to move toward the location of the handle plate 1. At the same time, since a shoulder 503 is provided at the middle and lower part of the pin 2 5, when the shoulder 503 of the pin 2 5 fits with the pressure plate 2, the pin 2 5 will move with the pressure plate 2 to the location of the handle plate 1, and then the bolts 13 are respectively screwed into the two threaded holes on the pole module and the corresponding threaded holes of the rotor module, thereby fixing the pole module and the rotor module; thereafter, the pin 1 4 is withdrawn from the openings on the four corners of the pole module, that is, the surface-mounted magnetic steel device is removed, and then the bolts 13 are respectively screwed into the openings on the four corners of the pole module and the four threaded holes corresponding to the rotor module, and the magnetic steel pushing process is ended.

[0054] The protection scope of the present invention includes but is not limited to the above embodiments. The protection scope of the present invention shall be based on the claims. Any replacement, deformation, and improvement of the technology that can be easily thought of by technicians in this field shall fall within the protection scope of the present invention.

Claims

1. A surface mounted magnetic steel device, characterized in that: It includes a handle plate, a pressure plate, a screw rod, a plurality of first pins and a plurality of second pins; A handle plate through hole is provided in the middle of the handle plate, and a nut 1 is fixedly connected to the middle of the handle plate, the screw rod passes through the handle plate through hole in the middle of the handle plate and is threadedly connected to the nut 1, and the bottom of the screw rod is rotatably connected to the middle of the pressure plate; The handle plate is provided with a plurality of pin holes 1 and 2, the pressing plate is provided with a plurality of pin holes 1 and 2, pin 1 is fixedly connected to pin hole 1 on the handle plate, pin 1 is slidably connected to pin hole 1 on the pressing plate, pin 2 is slidably and rotatably connected to pin hole 2 on the handle plate, a shaft shoulder is provided at the middle and lower part of pin 2, and the lower part of the shaft shoulder of pin 2 is slidably and rotatably connected to pin hole 2 on the pressing plate; The outer surface of the bottom of the pin 2 is provided with a thread for threaded connection with the threaded hole on the magnetic pole module; the bottom of the pin 1 is used for plugging with the through hole on the magnetic pole module.

2. The surface mounted magnetic steel device according to claim 1, characterized in that: The middle part of the handle plate is fixedly connected with nut one by bolts; handle holes are arranged on both sides of the handle plate; and lifting ears are fixedly connected to the handle plate.

3. The surface mounted magnetic steel device according to claim 1, characterized in that: Two pin holes 1 and one pin hole 2 are opened on one side of the middle of the handle plate, and one pin hole 2 is located between the two pin holes 1; two pin holes 1 and one pin hole 2 are opened on the other side of the middle of the handle plate, and one pin hole 2 is located between the two pin holes 1; One side of the pressure plate is provided with two pin holes one and one pin hole two, and one pin hole two is located between the two pin holes one; the other side of the pressure plate is provided with two pin holes one and one pin hole two, and one pin hole two is located between the two pin holes one.

4. The surface mounted magnetic steel device according to claim 1, characterized in that: A pressing plate through hole is provided in the middle of the pressing plate, and a sleeve is fixedly connected in the pressing plate through hole, and the bottom of the screw rod is rotatably connected to the sleeve via a bearing.

5. The surface mounted magnetic steel device according to claim 4, characterized in that: The screw rod is composed of a polygonal head, a screw rod section, a bare rod section, a lower threaded section and a pin section which are connected in sequence, wherein the screw section is threadedly connected to a nut, a bearing retaining ring is connected to the connecting position between the bare rod section and the screw section, the bare rod section is rotationally connected to the sleeve through a bearing, the lower threaded section is threadedly connected to a slotted nut, a plug hole is provided on the pin section, and a pin is inserted into the slot on the slotted nut and the plug hole on the pin section.

6. The surface mounted magnetic steel device according to claim 4, characterized in that: There are 4 pins in the first pin and 2 pins in the second pin.

7. The surface mounted magnetic steel device according to claim 1, characterized in that: The pin one is formed by connecting an upper threaded section, a sliding section, a magnetic steel connecting section and a guide section in sequence, wherein the outer diameter of the sliding section is greater than the outer diameter of the magnetic steel connecting section, and the outer diameter of the magnetic steel connecting section is greater than the outer diameter of the guide section; wherein the upper threaded section passes through the pin hole one on the handle plate and is threadedly connected with the nut two to achieve a fixed connection between the pin one and the pin hole one on the handle plate, a sliding sleeve is fixedly connected in the pin hole one on the pressure plate, the sliding section is slidably connected to the sliding sleeve on the pressure plate, the magnetic steel connecting section is used to be plugged into the through hole on the magnetic pole module, and the guide section is used to be inserted into the threaded hole on the rotor bracket.

8. The surface mounted magnetic steel device according to claim 7, characterized in that: A sliding sleeve is fixedly connected in the pin hole 2 on the handle plate, and the pin 2 is slidably and rotatably connected to the sliding sleeve on the handle plate. A sliding sleeve is fixedly connected in the pin hole 2 on the pressure plate, and the lower part of the shoulder of the pin 2 is slidably and rotatably connected to the sliding sleeve on the pressure plate.

9. The surface mounted magnetic steel device according to claim 8, characterized in that: The outer surface of the bottom of the pin 2 is provided with a circle of grooves, the grooves are located above the threads at the bottom of the pin 2, and a retaining ring is connected in the grooves.

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