Magnetic flux detection head structure and magnetizing detection device

Abstract

A magnetic flux detection head structure provided by the present invention comprises a belt moving plate, a sliding frame, a bearing assembly, a detection head and an elastic abutting assembly, the sliding frame is slidably installed on the belt moving plate, the bearing assembly comprises an upper bearing and a lower bearing, the upper bearing and the lower bearing are installed at one end of the sliding frame in parallel, the detection head is installed on the sliding frame, and the elastic abutting assembly is installed on the detection head. The elastic abutting assembly is located between the upper bearing and the lower bearing, a preset distance exists between the detection head and the outer side of the upper bearing and the outer side of the lower bearing, the elastic abutting assembly comprises an abutting plate and an elastic piece, the abutting plate is fixedly connected to the belt moving plate, and the elastic piece is compressed between the abutting plate and the sliding frame and provides elastic force for the sliding frame to move towards one end of the bearing assembly. The magnetic flux detection head structure provided by the invention is applied to a magnetizing detection device, and can elastically abut against the surface of a rotor through the circumferential surfaces of the upper and lower bearings during detection, so that the detection distance of the detection head relative to the surface of the rotor is fixed, and accurate measurement of the surface magnetism or magnetic flux of the rotor is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of magnetization, and particularly to a magnetic flux detection head structure and a magnetization detection device having the magnetic flux detection head structure. Background Art

[0002] During the manufacturing process of a motor rotor, a magnetization device is required to magnetize the rotor so that it has magnetism. And after magnetization, surface magnetic detection of the rotor needs to be carried out, such as detecting the magnetic flux intensity and the number of surface magnetic steels. During the detection, a magnetic flux detection head is aligned with the rotor at a preset distance from the rotor. The rotor rotates one week, so as to detect one week of the rotor. Then, the detection head does not move up and down while the rotor moves up and down, or the rotor does not move up and down while the detection head moves up and down. In this way, the detection is carried out circle by circle step by step in the height direction of the rotor until the surface magnetic detection of the entire rotor is completed. However, currently during the surface magnetic detection, due to the possible eccentric rotation of the rotor or the different radial dimensions of the rotor at different height positions, the detection distance from the detection head to the outer peripheral surface of the rotor is not uniform, resulting in the detection head being unable to accurately detect the surface magnetism of the rotor. Summary of the Invention

[0003] In view of the above, it is necessary for the present invention to provide a magnetic flux detection head structure that improves the detection accuracy of the surface magnetism of the rotor.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A magnetic flux detection head structure includes a belt moving plate, a sliding frame, a bearing assembly, a detection head, and an elastic abutting assembly. The sliding frame is slidably mounted on the belt moving plate. The bearing assembly includes an upper bearing and a lower bearing. The upper bearing and the lower bearing are mounted in parallel at one end of the sliding frame. The detection head is mounted on the sliding frame, between the upper bearing and the lower bearing, and the detection head has a preset distance relative to the outer sides of the upper bearing and the lower bearing. The elastic abutting assembly includes an abutting plate and an elastic member. The abutting plate is fixedly connected to the belt moving plate, and the elastic member is compressed between the abutting plate and the sliding frame to provide an elastic force for the sliding frame to move towards the bearing assembly end.

[0006] In addition, it is necessary for the present invention to provide a magnetization detection device having the magnetic flux detection head structure described above.

[0007] A magnetization detection device includes a frame, a rotor positioning mechanism and a magnetic flux detection mechanism both installed on the frame. The rotor positioning mechanism positions the rotor on the frame and can drive the rotor to rotate. The magnetic flux detection mechanism detects the surface magnetism and magnetic flux of the rotor. The magnetic flux detection mechanism includes a spatial movement mechanism and a magnetic flux detection head structure installed on the spatial movement mechanism. The spatial movement mechanism drives the magnetic flux detection head structure to move in space, aligns the position of the magnetic flux detection head structure with the rotor, and the upper bearing and the lower bearing of the magnetic flux detection head structure abut against the outer peripheral surface of the rotor. An elastic abutting component provides an elastic force so that the upper bearing and the lower bearing maintain elastic abutment on the outer peripheral surface of the rotor, thereby maintaining a fixed detection distance between the detection head and the outer peripheral surface of the rotor.

[0008] The beneficial effects of the present invention are as follows:

[0009] The magnetic flux detection head structure provided by the present invention can elastically abut against the surface of the rotor through the circumferential surfaces of the upper and lower bearings during detection, so that the detection distance between the detection head and the rotor surface is fixed, realizing accurate measurement of the surface magnetism or magnetic flux of the rotor. Description of the Drawings

[0010] Figure 1 It is a perspective view of the magnetic flux detection head structure provided by the embodiment of the present invention;

[0011] Figure 2 It is an exploded view of the magnetic flux detection head structure from the first perspective;

[0012] Figure 3 It is an exploded view of the magnetic flux detection head structure from the second perspective;

[0013] Figure 4 It is an assembly drawing of the magnetic flux detection head structure;

[0014] Figure 5 It is a front view of the magnetic flux detection head structure;

[0015] Figure 6 It is a cross-sectional view of the magnetic flux detection head structure;

[0016] Figure 7 It is a perspective view of the magnetic flux detection mechanism with the magnetic flux detection head structure;

[0017] Figure 8 It is a schematic diagram of the state of the magnetic flux detection head structure detecting the rotor.

[0018] Description of the reference numerals:

[0019] Moving plate 10; Sliding frame 20; Bearing assembly 30; Detection head 40; Elastic abutting assembly 50; Upper bearing 31; Lower bearing 32; Abutting plate 51; Elastic member 52; Slide frame top plate 21; Slide frame bottom plate 22; Connecting vertical plate 23; Detection head mounting plate 24; Perforation 241; Opening slit 242; Locking hole 243; Locking pin 244; Upper bearing mounting plate 33; Lower bearing mounting plate 34; Clamping groove 331; Assembly hole 211; Accommodation hole 511; Guide pin 53; Limit bolt 54; Chute block 212; Slide rail 101; Limit block 11; Indicator 213; Alarm 12; Spatial movement mechanism 60; Lateral movement drive assembly 61; Longitudinal movement drive assembly 62; Rotor 70. Detailed implementation manners

[0020] The following will describe in detail the specific implementation manners of the present application in conjunction with the accompanying drawings. It should be understood that the specific implementation manners described herein are only used to illustrate and explain the present application, and are not used to limit the present application.

[0021] As Figures 1 - 6 shown, an embodiment of the present invention provides a magnetic flux detection head structure, including a moving plate 10, a sliding frame 20, a bearing assembly 30, a detection head 40, and an elastic abutting assembly 50. The moving plate 10 is used to be installed on a spatial movement mechanism and can drive the moving plate 10 to move longitudinally, laterally, and vertically. The sliding frame 20 is slidably installed on the moving plate 10. The bearing assembly 30 includes an upper bearing 31 and a lower bearing 32. The upper bearing 31 and the lower bearing 32 are installed in parallel at one end of the sliding frame 20. The detection head 40 is installed on the sliding frame 20, between the upper bearing 31 and the lower bearing 32, and the end face of the detection end of the detection head 40 has a preset distance relative to the outer sides of the upper bearing 31 and the lower bearing 32. The elastic abutting assembly 50 includes an abutting plate 51 and an elastic member 52. The abutting plate 51 is fixedly connected to the moving plate 10, and the elastic member 52 is compressed between the abutting plate 51 and the sliding frame 20 to provide an elastic force for the sliding frame 20 to move towards one end of the bearing assembly 30.

[0022] The sliding frame 20 includes a slide frame top plate 21, a slide frame bottom plate 22, and connecting vertical plates 23 and a detection head mounting plate 24 disposed between the slide frame top plate 21 and the slide frame bottom plate 22. The upper and lower ends of the connecting vertical plates 23 are respectively fixedly connected to the slide frame top plate 21 and the slide frame bottom plate 22. One end of the detection head mounting plate 24 is fixedly connected to either the slide frame top plate 21 or the slide frame bottom plate 22, and the other end is not connected to the slide frame top plate 21 and the slide frame bottom plate 22. The detection head 40 is parallel to the slide frame top plate 21 and the slide frame bottom plate 22 and penetrates through the detection head mounting plate 24. Preferably, in this embodiment, the upper end of the detection head mounting plate 24 is fixedly connected to the slide frame top plate 21.

[0023] The detection head mounting plate 24 is provided with a perforation 241 for the detection head 40 to pass through. An opening slit 242 is formed on the lower side of the detection head mounting plate 24 and communicates with the perforation 241. The detection head mounting plate 24 is provided with a locking hole 243 passing through the opening slit 242 for cooperating with the locking pin 244 to adjust the size of the opening slit 242, so as to clamp or loosen the detection head 40. Further, the hole wall of the perforation 241 is formed as a threaded surface to facilitate the stable clamping of the detection head 40. Preferably, the detection head 40 is in a cylindrical shape, and a threaded surface corresponding to the hole wall of the perforation 241 is formed on its outer peripheral surface.

[0024] Understandably, a through hole is formed in the middle of the connecting vertical plate 23 for the auxiliary detection head mounting plate 24 to support one end of the detection head 40.

[0025] The bearing assembly 30 further includes an upper bearing mounting plate 33 and a lower bearing mounting plate 34. A clamping groove 331 is formed at one end of the upper bearing mounting plate 33 and is clamped on the upper side of the detection head mounting plate 24. Further, the end of the upper bearing mounting plate 33 with the clamping groove 331 is fixedly connected to the bottom surface of the carriage top plate 21 through a pin. The other end of the upper bearing mounting plate 33 is mounted with the upper bearing 31 on its lower surface. The lower bearing mounting plate 34 is fixedly connected to one end of the carriage bottom plate 22. Preferably, the lower bearing mounting plate 34 is integrally formed at one end of the carriage bottom plate 22, and the lower bearing 32 is mounted on the upper surface of the lower bearing mounting plate 34 and is arranged opposite to the upper bearing 31.

[0026] An assembly hole 211 is formed on the carriage top plate 21. The lower end of the abutting plate 51 extends into the assembly hole 211, and the elastic member 52 is elastically pressed between the hole wall of the assembly hole 211 and the abutting plate 51. The elastic member 52 preferably adopts a spiral spring.

[0027] A receiving hole 511 is formed on the plate surface of the abutting plate 51 for one end of the spiral spring to be received. A guide pin 53 is mounted on the hole wall of the assembly hole 211 for the other end of the spiral spring to be sleeved.

[0028] The elastic abutting assembly 50 further includes a limit bolt 54. A screw hole is formed on the end surface of the carriage top plate 21 and communicates with the assembly hole 211. The limit bolt 54 cooperates with the screw hole and extends into the assembly hole 211. The limit bolt 54 is used to abut against the side of the abutting plate opposite to the elastic member. The length of the limit bolt 54 extending into the assembly hole 211 can be adjusted to realize the adjustment of the left - right moving distance of the abutting plate 51 in the assembly hole.

[0029] A slide rail structure is provided between the carriage top plate 21 and the belt moving plate 10. The slide rail structure includes a chute block 212 provided on the top surface of the carriage top plate 21, and a slide rail bar 101 provided on the belt moving plate 10 and cooperating with the chute block 212. A chute is formed on the chute block 212 for cooperating with the slide rail bar 101. A limit block 11 is provided at one end of the belt moving plate 10, and the limit block 11 extends downward to resist one end of the chute block 212, preventing the carriage top plate 21 from sliding out of the belt moving plate 10 under the action of the elastic member 52.

[0030] An indicating member 213 is installed on the carriage top plate 21. A scale (not shown in the figure) and an alarm 12 are provided on the belt moving plate 10. The carriage top plate 21 drives the indicating member 213 to move, and the indicating tip of the indicating member 213 points to the value on the scale, so that the relative movement position of the carriage top plate 21 with respect to the belt moving plate 10 can be obtained. When the indicating tip of the indicating member 213 moves into the alarm 12, it means that the limit position has been reached, and the alarm 12 will be triggered to give an alarm.

[0031] The magnetic flux detection head structure of the present invention is applied to a magnetizing detection device (not shown in the figure). The magnetizing detection device includes a frame, a rotor positioning mechanism and a magnetic flux detection mechanism both installed on the frame. The rotor positioning mechanism positions the rotor on the frame and can drive the rotor to rotate, and the magnetic flux detection mechanism detects the surface magnetism and magnetic flux of the rotor.

[0032] Please refer to Figures 7 - 8 , the magnetic flux detection mechanism includes a spatial movement mechanism 60 and a magnetic flux detection head structure installed on the spatial movement mechanism 60. The spatial movement mechanism 60 drives the magnetic flux detection head structure to move in space. In this embodiment, the spatial movement mechanism 60 adopts a transverse movement and lifting mechanism, including a transverse movement driving component 61 and a longitudinal movement driving component 62 installed on the transverse movement driving component 61. The belt moving plate 10 is fixedly installed on the longitudinal movement driving component 62, so that the belt moving plate 10 can be driven to move transversely or vertically. Thus, driven by the transverse movement and lifting mechanism, the position of the magnetic flux detection head structure is aligned with that of the rotor 70, and the upper bearing 31 and the lower bearing 32 of the magnetic flux detection head structure are abutted against the outer peripheral surface of the rotor 70. The elastic abutting component 50 provides an elastic force to keep the upper bearing 31 and the lower bearing 32 elastically abutted against the outer peripheral surface of the rotor 70, so that the detection head 40 and the outer peripheral surface of the rotor 70 maintain a fixed detection distance.

[0033] Specifically, when detecting the outer circumferential surface of the rotor 70, as the rotor 70 rotates, even if the rotor 70 is in an eccentric rotation, it will not affect the detection distance between the detection head 40 and the outer circumferential surface of the rotor 70. When the outer circumferential surface of the rotor 70 is pressed toward the magnetic flux detection mechanism, the upper bearing 31, the lower bearing 32 and the detection head 40 together with the entire sliding frame 20 slide relative to the belt shift plate 10, and the elastic member 52 is compressed; with the eccentric rotation of the rotor 70 or the change in radial position caused by the lifting and lowering of the rotor 70, when the outer circumferential surface of the rotor 70 wants to separate from the magnetic flux detection mechanism, the entire sliding frame 20 slides relative to the belt shift plate 10 under the action of the elastic member 52, and the upper bearing 31 and the lower bearing 32 are tightly against the outer circumferential surface of the rotor 70, thereby ensuring that the detection distance between the detection head 40 and the outer circumferential surface of the rotor 70 is fixed, thereby ensuring the accuracy of the magnetic flux detection.

[0034] In summary, the flux detection head structure provided by the present invention can be elastically pressed against the surface of the rotor by the circumferential surfaces of the upper and lower bearings during detection, so that the detection distance of the detection head relative to the rotor surface is fixed, thereby realizing accurate measurement of the rotor surface magnetism or magnetic flux; and the overall structure of the flux detection head structure is convenient for assembly, convenient for adjusting the position of the detection head, and has the setting of the sliding limit and the sliding limit distance of the sliding frame relative to the shift plate, and is convenient for adjusting the sliding limit distance, as well as the real-time indication of the sliding distance and the warning setting of the sliding limit position, which is beneficial to the safety and durability of the flux detection head structure during use.

[0035] The above-described embodiments only express the implementation methods of the present invention, but they cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A magnetic flux detection head structure, characterized in that: The invention comprises a belt shift plate (10), a sliding frame (20), a bearing assembly (30), a detection head (40) and an elastic abutting assembly (50), wherein the sliding frame (20) is slidably mounted on the belt shift plate (10), the bearing assembly (30) comprises an upper bearing (31) and a lower bearing (32), the upper bearing (31) and the lower bearing (32) are mounted in parallel at one end of the sliding frame (20), the detection head (40) is mounted on the sliding frame (20), and is located between the upper bearing (31) and the lower bearing (32). The detection end face of the detection head (40) has a preset distance relative to the outer sides of the upper bearing (31) and the lower bearing (32); the elastic abutment assembly (50) comprises an abutment plate (51) and an elastic member (52); the abutment plate (51) is fixedly connected to the belt shift plate (10); the elastic member (52) is compressed between the abutment plate (51) and the sliding frame (50), and provides an elastic force for the sliding frame (20) to move toward one end of the bearing assembly (30).

2. The magnetic flux detection head structure according to claim 1, characterized in that: The sliding frame (20) comprises a sliding frame top plate (21), a sliding frame bottom plate (22), and a connecting vertical plate (23) and a detection head mounting plate (24) arranged between the sliding frame top plate (21) and the sliding frame bottom plate (22); the upper and lower ends of the connecting vertical plate (23) are respectively fixed to the sliding frame top plate (21) and the sliding frame bottom plate (22); one end of the detection head mounting plate (24) is fixed to any one of the sliding frame top plate (21) and the sliding frame bottom plate (22), and the other end is not connected to the sliding frame top plate (21) and the sliding frame bottom plate (22); the detection head (40) is parallel to the sliding frame top plate (21) and the sliding frame bottom plate (22) and is penetrated on the detection head mounting plate (24).

3. The magnetic flux detection head structure according to claim 2, characterized in that: The detection head mounting plate (24) is provided with a through hole (241) for the detection head (40) to pass through, and an opening slit (242) is provided on the lower side of the detection head mounting plate (24) and is connected to the through hole (241). The detection head mounting plate (24) is provided with a locking hole (243) passing through the opening slit (242) so as to cooperate with a locking pin (244) to adjust the size of the opening slit (242), thereby clamping or loosening the detection head (40).

4. The magnetic flux detection head structure according to claim 2, characterized in that: The bearing assembly (30) includes an upper bearing mounting plate (33) and a lower bearing mounting plate (34); a clamping groove (331) is provided at one end of the upper bearing mounting plate (33) and is clamped on the upper side of the detection head mounting plate (24); the upper bearing (31) is mounted on the lower surface of the other end of the upper bearing mounting plate (33); the lower bearing mounting plate (34) is integrally formed at one end of the slide base plate (22); the lower bearing (32) is mounted on the upper surface of the lower bearing mounting plate (34) and is arranged opposite to the upper bearing (31).

5. The magnetic flux detection head structure according to claim 2, characterized in that: An assembly hole (211) is provided on the top plate (21) of the slide, the lower end of the abutting plate (51) extends into the assembly hole (211), and the elastic member (52) elastically presses between the hole wall of the assembly hole (211) and the abutting plate (51).

6. The magnetic flux detection head structure according to claim 5, characterized in that: The plate surface of the supporting plate (51) is provided with an accommodating hole (511) for accommodating one end of the elastic member (52), and the hole wall of the assembly hole (211) is provided with a guide pin (53) for mounting the other end of the elastic member (52).

7. The magnetic flux detection head structure according to claim 5, characterized in that: The elastic abutting assembly (50) comprises a limiting bolt (54); a screw hole is provided on the end surface of the slide top plate (21) and is connected to the assembly hole (211); the limiting bolt (54) cooperates with the screw hole and extends into the assembly hole (211); the limiting bolt (54) is used to abut against a side of the abutting plate (51) relative to the elastic member (52) to adjust the movable distance of the abutting plate (51) in the assembly hole (211).

8. The magnetic flux detection head structure according to claim 2, characterized in that: A slide rail structure is arranged between the slide top plate (21) and the belt shift plate (10), and the slide rail structure includes a slide groove block (212) arranged on the top surface of the slide top plate (21), and a slide rail bar (101) arranged on the belt shift plate (10) and cooperating with the slide groove block (212). A limit block (11) is arranged at one end of the belt shift plate (10) to resist the end surface of the slide groove block (212) to prevent the slide top plate (21) from sliding out of the belt shift plate (10) under the action of the elastic member (52).

9. The magnetic flux detection head structure according to claim 2, characterized in that: An indicator (213) is installed on the carriage top plate (21), and a scale and an alarm (12) are provided on the belt shift plate (10). The indicator (213) moves on the scale to obtain a position of the carriage top plate (21) relative to the belt shift plate (10), and when the indicator moves to the alarm (12), the alarm (12) is triggered to sound an alarm.

10. A magnetization detection device, comprising a frame, a rotor positioning mechanism and a magnetic flux detection mechanism both mounted on the frame, wherein the rotor positioning mechanism positions the rotor on the frame and can drive the rotor to rotate, and the magnetic flux detection mechanism detects the surface magnetism and magnetic flux of the rotor, characterized in that: The magnetic flux detection mechanism comprises a space moving mechanism (60) and a magnetic flux detection head structure as described in any one of claims 1 to 9 installed on the space moving mechanism (60), the space moving mechanism (60) drives the magnetic flux detection head structure to move in space, aligns the position of the magnetic flux detection head structure with the position of the rotor (70), and the upper bearing (31) and the lower bearing (32) of the magnetic flux detection head structure are abutted against the outer peripheral surface of the rotor (70), and the elastic abutting component (50) provides elastic force so that the upper bearing (31) and the lower bearing (32) maintain elastic abutment against the outer peripheral surface of the rotor (70), so that the detection head and the outer peripheral surface of the rotor (70) maintain a fixed detection distance.

Images