CN109149905B

CN109149905B - Overload protector

Info

Publication number: CN109149905B
Application number: CN201810913139.3A
Authority: CN
Inventors: 刘国胜; 刘洋
Original assignee: Anhui Jinshituo Machinery Co ltd
Current assignee: Anhui Jinshituo Machinery Co ltd
Priority date: 2018-08-13
Filing date: 2018-08-13
Publication date: 2020-07-28
Anticipated expiration: 2038-08-13
Also published as: CN109149905A

Abstract

The invention discloses an overload protector, comprising: the inner shaft seat, the bearing, the magnetic shielding sleeve, the middle shaft, the inner rotor, a first magnetic steel, a second magnetic steel, an outer rotor, a third magnetic steel, an outer ring sleeve and the drive plate are arranged, the middle shaft is arranged on the left side and the right side of the inner shaft seat through the bearing respectively, the first magnetic steel is arranged on the left end face and the right end face of the inner shaft seat respectively, the first magnetic steel corresponding to the left end face of the inner shaft seat is embedded in the inner rotor, the first magnetic steel and the second magnetic steel are attracted together, the outer rotor is sleeved on the outer side of the inner rotor, the third magnetic steel is embedded in the outer rotor corresponding to the first magnetic steel on the right end face of the inner shaft seat, the outer ring sleeve is sleeved outside the outer rotor, the part of the outer ring sleeve extending out of the right end of the outer rotor. The multi-drill linkage combined down-the-hole drill has the advantages of novel structure and high safety, and is mainly applied to multi-drill linkage combined down-the-hole drill of tunnel down-the-hole machinery.

Description

Overload protector

Technical Field

The invention relates to an overload protector, which is applied to the technical field of mechanical transmission.

Background

In the tunnel construction, need set up multiple cable, optical cable at the tunnel inner wall, in order to install these cables, need punch at the tunnel lateral wall, current punching machine generally punches a hole by step motor cooperation drill bit, nevertheless in the work progress, because obstacle such as rocks can be met sometimes in the tunnel lateral wall, lead to the drill bit to continue deeply, if step motor continues the operation, can damage the drill bit undoubtedly, cause the condition such as connecting axle fracture even, bring the potential safety hazard for the construction.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention discloses an overload protector which has the advantages of novel structure and high safety.

The invention discloses an overload protector, comprising: the inner shaft seat, the bearings, the magnetic shielding sleeves, the middle shaft, the inner rotor, the first magnetic steel, the second magnetic steel, the outer rotor, the third magnetic steel, the outer ring sleeve and the drive plate, wherein the middle shaft is respectively installed on the left side and the right side of the inner shaft seat through the bearings, the magnetic shielding sleeve is sleeved outside each bearing, the inner rotor is sleeved outside the inner shaft seat, the first magnetic steel is installed on each surface of the left end and the right end of the inner shaft seat, the first magnetic steel on each surface is distributed in an annular shape, the magnetic poles of the adjacent first magnetic steel are opposite, the first magnetic steel on the left end surface of the second magnetic steel, which corresponds to the inner shaft seat, is embedded inside the inner rotor, and the first magnetic steel and the second magnetic steel are attracted together, the outer rotor is sleeved outside the inner rotor, the third magnetic steel is embedded inside the first magnetic steel on the, the outer rotor is sleeved with an outer ring sleeve, the right end of the outer ring sleeve extends out of one part of the right end of the outer rotor, openings are uniformly formed in the part, extending out of the right end of the outer rotor, of the outer ring sleeve, the driving plate is installed on the middle shaft on the right side of the outer ring sleeve, the peripheral surface of the driving plate is uniformly and fixedly connected with driving pieces corresponding to the openings, and the driving pieces extend into the openings.

The number of the magnetic steels on the left end face and the right end face of the inner shaft seat is equal, and is 14-18.

The outer rotor and the outer ring sleeve are of an integrally formed structure, and the left end of the outer ring sleeve is arranged in the middle of the outer rotor.

By adopting the technical scheme, the method has the following beneficial effects:

1. the structure is novel;

2. the safety is high.

Drawings

FIG. 1 is a schematic cross-sectional view of an overload protector according to the present invention;

FIG. 2 is a schematic structural view of a first position of magnetic steel in the present invention;

fig. 3 is a right-view structural diagram of an overload protector according to the present invention.

Wherein: 1-an inner shaft seat; 2-a bearing; 3-magnetic shielding sleeve; 4-the medial axis; 5-an inner rotor; 6-first magnetic steel; 7-magnetic steel II; 8-an outer rotor; 9-magnetic steel III; 10-outer ring sleeve; 11-a dial; 101-a gap; 111-plectrum.

Detailed Description

As shown in fig. 1-3, the present invention discloses an overload protector, comprising: the inner shaft base 1, the bearings 2, the magnetic shielding sleeves 3, the middle shaft 4, the inner rotor 5, the first magnetic steel 6, the second magnetic steel 7, the outer rotor 8, the third magnetic steel 9, the outer ring sleeve 10 and the drive plate 11, wherein the middle shaft 4 is respectively arranged on the left side and the right side of the inner shaft base 1 through the bearings 2, the magnetic shielding sleeve 3 is sleeved outside each bearing 2, the inner rotor 5 is sleeved outside the inner shaft base 1, the first magnetic steel 6 is arranged on the left end surface and the right end surface of the inner shaft base 5, the first magnetic steel 6 on each surface is distributed in an annular shape, the 6 magnetic poles of the adjacent first magnetic steel are opposite, the first magnetic steel 6 on the left end surface of the second magnetic steel 7 corresponding to the inner shaft base 1 is embedded inside the inner rotor 5, the first magnetic steel 6 and the second magnetic steel 7 are attracted together under the action of the magnetic poles, the outer rotor 8 is sleeved outside the inner rotor 5, the third magnetic steel 9 is distributed in an annular shape, and is attracted with the third magnetic steel 9 through the first magnetic steel 6 under the action of magnetic poles, an outer ring sleeve 10 is sleeved outside the outer rotor 8, a part of the right end of the outer ring sleeve 10 extends out of the right end of the outer rotor 8, openings 101 are uniformly formed in the part of the outer ring sleeve 10 extending out of the right end of the outer rotor 8, the drive plate 11 is mounted on the middle shaft 4 on the right side of the outer ring sleeve 10, the peripheral surface of the drive plate 11 is uniformly and fixedly connected with a drive sheet 111 corresponding to the openings 101, and the drive sheet 111 extends into the openings 101.

The number of the first 6 magnetic steels on the left end face and the right end face of the inner shaft seat 1 is equal, and the number of the first 6 magnetic steels is 14-18.

The outer rotor 8 and the outer ring sleeve 10 are of an integrally formed structure, and the left end of the outer ring sleeve 10 is arranged in the middle of the outer rotor 8.

The invention is implemented as follows: the right side center shaft 4 is connected with the output end of the stepping motor, the other center shaft 4 is connected with the punching mechanism, the stepping motor drives the punching mechanism to punch holes, in the process, the first magnetic steel 6 on the left end face of the inner shaft base 1 is in contact with the second magnetic steel 7, the first magnetic steel 6 on the right end face is in contact with the third magnetic steel 9, when the inner shaft base is blocked, one end connected with the punching mechanism does not rotate, the second magnetic steel 7 and the first magnetic steel 6 are staggered, under the action of like-pole repulsion, the inner shaft base 1 is separated from rotors on the left side and the right side, idling occurs, the stepping motor is effectively protected, shaft breakage is prevented, and operation safety is improved.

Finally, it should be noted that: the above examples are only intended to illustrate the invention and do not limit the technical solutions described in the invention; thus, while the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted; all such modifications and variations are intended to be included herein within the scope of this disclosure and the present invention and protected by the following claims.

Claims

1. An overload protector comprising: inner axle seat, bearing, magnetism shielding cover, axis, inner rotor, magnet steel one, magnet steel two, outer rotor, magnet steel three, outer ring cover, driver plate, the axis is installed through a bearing respectively to the inner axle seat left and right sides, and a magnetism shielding cover, its characterized in that of all suit in the outside of every bearing: the inner rotor is sleeved outside the inner shaft seat, a first magnetic steel is mounted on each of the left end face and the right end face of the inner shaft seat, a first magnetic steel on each face is distributed annularly, the magnetic poles of two adjacent first magnetic steels are opposite, a second magnetic steel corresponding to the first magnetic steel on the left end face of the inner shaft seat is embedded inside the inner rotor, the first magnetic steel and the second magnetic steel are attracted together, the outer rotor is sleeved outside the inner rotor, a third magnetic steel is embedded inside the outer rotor corresponding to the first magnetic steel on the right end face of the inner shaft seat, the third magnetic steel is distributed annularly and attracted together with the third magnetic steel through the first magnetic pole, an outer ring sleeve is sleeved outside the outer rotor, the right end of the outer ring sleeve extends out of one part of the right end of the outer rotor, the part of the outer ring sleeve extending out of the right end of the outer rotor is uniformly provided with notches, the drive plate is mounted, the poking sheet extends into the notch.

2. An overload protector according to claim 1, wherein: the number of the magnetic steels on the left end face and the right end face of the inner shaft seat is equal, and is 14-18.

3. An overload protector according to claim 1, wherein: the outer rotor and the outer ring sleeve are of an integrally formed structure, and the left end of the outer ring sleeve is arranged in the middle of the outer rotor.