CN212509167U

CN212509167U - Yoke fastening device

Info

Publication number: CN212509167U
Application number: CN202020875712.9U
Authority: CN
Inventors: 徐卫; 林永良; 蔡承家
Original assignee: Shanghai Xinyan Industrial Equipment Co ltd
Current assignee: Shanghai Xinyan Industrial Equipment Co ltd
Priority date: 2020-05-22
Filing date: 2020-05-22
Publication date: 2021-02-09
Anticipated expiration: 2030-05-22

Abstract

The utility model provides a yoke fastener, include: the device comprises a base, a nut, a bolt, an elastic washer group and a cushion block; the nut is fixedly connected with the base; the bolt comprises a threaded rod and a polished rod, and the outer diameter of the polished rod is smaller than the small diameter of the threaded rod; the threaded rod is meshed with the nut; the elastic washer group is sleeved on the polish rod; the cushion block is provided with a central hole; the outer diameter of the polish rod is smaller than the diameter of the central hole; the outer diameter of the elastic washer group is larger than the diameter of the central hole; one end of the polished rod is inserted into the central hole, and the elastic washer component is pressed on the cushion block; the cushion block presses on the magnet yoke. The magnetic yoke has the advantages that the contact surface can be automatically adjusted, so that the magnetic yoke is uniformly stressed; the structure is compact, and the disassembly and the assembly are convenient; the service life is longer; the magnet yoke can be guaranteed not to displace in the production process, the inductor can be better attached, and a good pressing effect is provided for the inductor.

Description

Yoke fastening device

Technical Field

The utility model relates to a fastener, in particular to be applied to yoke fastener of intermediate frequency induction furnace.

Background

The medium-frequency induction furnace can generate strong vibration in the production process, and the magnet yoke is uniformly fastened on the periphery of the inductor through bolts.

Due to the influence of factors such as manufacturing precision, fit clearance and the like, the contact surface of a bolt and a magnetic yoke cannot be adjusted by the conventional fastening device, and the magnetic yoke is stressed unevenly, so that the effect of the fastening device is gradually weakened after long-term use.

SUMMERY OF THE UTILITY MODEL

The magnet yoke fastening device provided by the utility model can automatically adjust the contact surface, so that the magnet yoke is uniformly stressed; the structure is compact, and the disassembly and the assembly are convenient; the service life is longer; the magnet yoke can be ensured not to displace in the production process, better fit with the inductor and provide good pressing effect for the inductor; to overcome the disadvantages of the prior art.

The utility model provides a yoke fastener, include: the device comprises a base 9, a nut 6, a bolt 5, an elastic washer group and a cushion block 10; the nut 6 is fixedly connected with the base 9; the bolt 5 comprises a threaded rod 52 and a polished rod 53, and the outer diameter of the polished rod 53 is smaller than the small diameter of the threaded rod; the threaded rod 52 engages with the nut 6; the elastic washer group is sleeved on the polish rod 53; the spacer 10 has a central bore 101; the outer diameter of the polish rod 53 is smaller than the diameter of the central hole 101; the outer diameter of the elastic washer group is larger than the diameter of the central hole 101; one end of the polished rod 53 is inserted into the central hole 101, and the elastic washer component is pressed on the cushion block 10; the spacer 10 presses against the yoke.

Further, the utility model provides a yoke fastener can also have such characteristic: the device also comprises an axial elastic retainer ring 1; the end of the polish rod 53 has a retainer groove 531; the axial elastic retainer ring 1 is partially embedded into the retainer ring groove 531; the outer diameter of the axial elastic retainer ring 1 is larger than the inner diameter of the elastic washer; the elastic washer group is positioned between the axial elastic retainer ring 1 and the threaded rod 52; the outer diameter of the axial circlip 1 is smaller than the diameter of the central bore 101.

Further, the utility model provides a yoke fastener can also have such characteristic: the set of resilient washers comprises several disc washers 4.

Further, the utility model provides a yoke fastener can also have such characteristic: the elastic washer group also comprises a spherical washer 2 and a conical washer 3; the plane end of the spherical washer 2 is attached to the cushion block 10, the spherical end of the spherical washer 2 is attached to the conical end of the conical washer 3, the plane end of the conical washer 3 is attached to one end of the disc washer 4, and the other end of the disc washer 4 is attached to the end face of the threaded rod 52.

Further, the utility model provides a yoke fastener can also have such characteristic: the number of the disc-shaped gaskets 4 is odd, and the disc-shaped directions of the adjacent disc-shaped gaskets 4 are opposite.

Further, the utility model provides a yoke fastener can also have such characteristic: also comprises a shaft sleeve 7; the shaft sleeve 7 is fixed on the base 9; the nut 6 is fixed on the shaft sleeve 7; the threaded rod 52 passes through the sleeve 7 and engages the nut 6.

Further, the utility model provides a yoke fastener can also have such characteristic: one end of the shaft sleeve 7 is welded and fixed on the base 9; the nut 6 is welded and fixed on the other end of the shaft sleeve 7.

Further, the utility model provides a yoke fastener can also have such characteristic: the axes of the shaft sleeve 7 and the nut 6 are on the same straight line and are vertical to the stress surface of the magnetic yoke.

Further, the utility model provides a yoke fastener can also have such characteristic: also comprises a backstop stop dog 8; the bolt 5 further comprises a threaded head 51; the threaded rod 52 is located between the threaded head 51 and the polish rod 53; the screw head 51 is hexagonal; the backstop stopper 8 is detachably connected to the base 9 and is closely attached to any one side of the hexagon of the screw head 51.

Further, the utility model provides a yoke fastener can also have such characteristic: the base 9 has an upper case 91 and a lower case 92; the nut 6 is located between the upper case 91 and the lower case 92; the upper case 91 and the lower case 92 have through holes; one end of the bolt 5 passes through the through-hole of the upper case 91, engages with the nut 6, and passes through the through-hole of the lower case 92.

Drawings

Fig. 1 is a schematic structural view of a yoke fastening device.

Fig. 2 is an enlarged view of the X portion in fig. 1.

Detailed Description

The invention is further described with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 and 2, in the present embodiment, the yoke fastening device includes: the anti-collision device comprises a base 9, a shaft sleeve 7, a nut 6, a bolt 5, an elastic washer set, a cushion block 10, an axial elastic retainer ring 1 and a backstop stop block 8.

The susceptor 9 may be a part of the medium frequency induction furnace or an additional support as a fixed reference. In this embodiment, the base 9 has upper and lower shells, i.e., an upper shell 91 and a lower shell 92. The upper case 91 and the lower case 92 have through holes.

One end of the sleeve 7 is fixed to the upper case 91 of the base 9 by welding, and the nut 6 is fixed to the other end of the sleeve 7 by welding. The boss 7 and the nut 6 are interposed between the upper case 91 and the lower case 92. In this embodiment, the nut 6 is a square nut.

The bolt 5 includes: a threaded head 51, a threaded rod 52 and a polished rod 53. The threaded rod 52 is located on the threaded head 51 and the polished rod 53, i.e. in turn the threaded head 51, the threaded rod 52 and the polished rod 53. The outer diameter of the polish rod 53 is smaller than the minor diameter of the threaded rod. In this embodiment, the screw head 51 is hexagonal. One end of the polish rod 53 passes through the through hole of the upper housing 91 of the base, then passes through the shaft sleeve 7, and then passes through the nut 6 and then extends out of the through hole of the lower housing 92. The threaded rod 52 engages with the nut 6.

The axes of the through holes of the upper shell 91 and the lower shell 92, the shaft sleeve 7 and the nut 6 are on a straight line and are perpendicular to the stress surface of the magnetic yoke. The base 9 enables the bolt 5 to point to the bearing surface of the magnetic yoke along the central plane of the magnetic yoke, and the uniform bearing of the magnetic yoke is ensured.

As shown in fig. 2, in the present embodiment, the elastic washer group includes: the spherical washer 2, the conical washer 3 and the three disc washers 4 are all sleeved on the polish rod 53.

The plane end of the spherical washer 2 is attached to the cushion block 10, the spherical end of the spherical washer 2 is attached to the conical end of the conical washer 3, the plane end of the conical washer 3 is attached to one end of the disc washer 4, and the other end of the disc washer 4 is attached to the end face of the threaded rod 52. The dished directions of adjacent dished washers 4 are oppositely disposed. The disc-shaped gasket 4 plays a role in buffering, and vibration force in the actual working process can be eliminated to the maximum extent through arrangement and assembly; the spherical washer 2 and the conical washer 3 are matched for use, so that the contact surfaces of the spherical washer 2 and the cushion block 10 can be well attached, the local stress is reduced, and the service life is prolonged.

The end of the polish rod 53 has a retainer groove 531. Part of the axial elastic retainer ring 1 is embedded into the retainer ring groove 531; the outer diameter of the axial elastic retainer ring 1 is larger than the inner diameter of the spherical washer 2; the set of spring washers is located between the axial circlip 1 and the threaded rod 52. The elastic retainer ring 1 for the shaft effectively ensures that the spherical washer 2, the conical washer 3 and the disc-shaped washer 4 do not fall off in the dismounting process.

The spacer 10 has a central hole 101. The outer diameter of the polish rod 53 is smaller than the diameter of the central hole 101; and the outer diameter of the axial circlip 1 is smaller than the diameter of the central hole 101. The spherical washer 2 has an outer diameter larger than the diameter of the central hole 101. One end of the polish rod 53 is inserted into the center hole 101 and the flat end of the spherical washer 2 of the elastic washer assembly is pressed against the pad 10. The spacer 10 presses on the yoke, i.e. the yoke presses on the inductor.

The backstop stop 8 is detachably connected with the base 9 through a fastener and can be tightly attached to any hexagonal side of the screw head 51. The backstop block 8 prevents the threads of the bolt 5 and the nut 6 from loosening and retreating to influence the use after the device is installed.

The embodiments described above are only a part of the embodiments of the present invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Claims

1. A yoke fastener characterized in that: comprises a base (9), a nut (6), a bolt (5), an elastic washer group and a cushion block (10);

wherein the nut (6) is fixedly connected with the base (9);

the bolt (5) comprises a threaded rod (52) and a polished rod (53), and the outer diameter of the polished rod (53) is smaller than the small diameter of the threaded rod;

the threaded rod (52) is engaged with the nut (6);

the elastic washer group is sleeved on the polish rod (53);

the cushion block (10) is provided with a central hole (101);

the outer diameter of the polish rod (53) is smaller than the diameter of the central hole (101); the outer diameter of the elastic washer group is larger than the diameter of the central hole (101);

one end of the polished rod (53) is inserted into the central hole (101), and the elastic gasket assembly presses on the cushion block (10);

the cushion block (10) is pressed on the magnetic yoke.

2. The yoke fastening device according to claim 1, characterized in that:

the device also comprises an axial elastic retainer ring (1);

the end part of the polish rod (53) is provided with a retainer groove (531);

the axial elastic retainer ring (1) is partially embedded into the retainer ring groove (531);

the outer diameter of the axial elastic retainer ring (1) is larger than the inner diameter of the elastic washer;

the elastic washer set is positioned between the axial elastic retainer ring (1) and the threaded rod (52);

the outer diameter of the axial elastic retainer ring (1) is smaller than the diameter of the central hole (101).

3. The yoke fastening device according to claim 1, characterized in that:

wherein, the elastic gasket group comprises a plurality of disc-shaped gaskets (4).

4. The yoke fastening device according to claim 3, characterized in that:

the elastic washer set further comprises a spherical washer (2) and a conical washer (3);

the plane end of spherical packing ring (2) with cushion (10) laminating, the sphere end of spherical packing ring (2) with the conical surface end laminating of conical surface packing ring (3), the plane end of conical surface packing ring (3) with the one end laminating of belleville washer (4), the other end of belleville washer (4) with the terminal surface laminating of threaded rod (52).

5. The yoke fastening device according to claim 3, characterized in that:

the number of the disc-shaped gaskets (4) is odd, and the disc-shaped directions of the adjacent disc-shaped gaskets (4) are opposite.

6. The yoke fastening device according to claim 1, characterized in that:

also comprises a shaft sleeve (7);

the shaft sleeve (7) is fixed on the base (9);

the nut (6) is fixed on the shaft sleeve (7);

the threaded rod (52) penetrates through the shaft sleeve (7) to be meshed with the nut (6).

7. The yoke fastening device according to claim 6, characterized in that:

one end of the shaft sleeve (7) is welded and fixed on the base (9);

the nut (6) is fixed on the other end of the shaft sleeve (7) in a welding mode.

8. The yoke fastening device according to claim 6, characterized in that:

the axes of the shaft sleeve (7) and the nut (6) are on the same straight line and are vertical to the stress surface of the magnetic yoke.

9. The yoke fastening device according to claim 1, characterized in that:

also comprises a backstop stop block (8);

the bolt (5) further comprising a threaded head (51); the threaded rod (52) is located between the threaded head (51) and the polish rod (53);

the thread head (51) is hexagonal;

the retaining stop block (8) is detachably connected with the base (9) and is tightly attached to any side of the hexagon of the screw head (51).

10. The yoke fastening device according to claim 1, characterized in that:

wherein the base (9) has an upper housing (91) and a lower housing (92);

the nut (6) is positioned between the upper shell (91) and the lower shell (92);

the upper casing (91) and the lower casing (92) have through holes;

one end of the bolt (5) penetrates through the through hole of the upper shell (91), is meshed with the nut (6), and then penetrates through the through hole of the lower shell (92).