Magnetic powder brake with changed coil outlet

Abstract

The utility model discloses a magnetic powder brake for changing the coil outlet, including a shell and a brake mechanism, the shell is hollow with a cavity for accommodating the brake mechanism, the brake mechanism includes a coil, the outer peripheral wall of the shell is provided with a heat dissipation hole, the shell includes a back cover, the side wall of the shell is provided with an outlet hole for the coil outlet to pass out of the shell, the back cover is provided with a notch for the coil outlet corresponding to the outlet hole, the notch is detachably provided with a protective member for protecting the coil outlet during the transportation of the shell, and the outlet hole is provided with a protective member for preventing the coil outlet from excessively rubbing or contacting with the outlet hole. The utility model solves the problems in the prior art that the coil outlet of the magnetic powder brake passes through the heat dissipation hole to affect heat dissipation and the coil outlet is easily bent and damaged during transportation or installation.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic powder brakes, in particular to a magnetic powder brake with a coil outlet changed. Background Art

[0002] The magnetic powder brake is based on the electromagnetic principle and uses magnetic powder to transmit torque. It has the characteristics that the excitation current and the transmitted torque are basically linearly related. It can transmit a certain torque regardless of the slip, and has the advantages of fast response speed, simple structure, no pollution, no noise, no impact vibration, and energy saving. The traditional magnetic powder brake includes a shell and a brake mechanism arranged inside the shell, wherein a shell is welded on the shell to close the internal chamber of the shell, and the brake mechanism includes a brake coil, and the outlet of the brake coil needs to pass through the shell and the shell to be linked with the external tooling. The traditional magnetic powder brake will have heat dissipation holes on the shell to reduce the temperature of the internal chamber of the shell, and the outlet of the brake coil passes through the shell through the heat dissipation holes. However, the use of this structure will cause many disadvantages. For example, the outlet of the brake coil passes through the shell through the heat dissipation hole, which will occupy a large amount of space in the heat dissipation hole, which will affect the heat dissipation and reduce the heat dissipation performance of the shell. At the same time, when the magnetic powder brake is transported, the outlet of the coil The coil outlet is easily affected by external stress or bumps, causing damage or breakage. Or when the magnetic powder brake is installed, the coil outlet is affected by the installation direction and installation method, and the friction frequency between the coil outlet and the heat dissipation hole is high, which causes the coil outlet to be excessively worn or damaged or broken. When the coil outlet is damaged or broken, the entire brake coil assembly needs to be replaced. The traditional brake has its outer shell and shell welded together, which makes it difficult to disassemble the outer shell and the outer shell is severely worn during the disassembly process. Damage or breakage of the coil outlet will also cause the entire brake coil to need to be replaced, thereby increasing costs. Utility Model Content

[0003] In view of the shortcomings of the prior art, the utility model provides a magnetic powder brake with a changed coil outlet, in order to solve the problems in the prior art that the coil outlet of the magnetic powder brake passes through the heat dissipation hole affecting heat dissipation and the coil outlet is easily bent and damaged during transportation or installation.

[0004] To achieve the above-mentioned purpose, the utility model provides a magnetic powder brake for changing the coil wire outlet, comprising a shell and a brake mechanism, the shell is hollow with a cavity for accommodating the brake mechanism, the brake mechanism comprises a coil, the outer peripheral wall of the shell is provided with a heat dissipation hole, the shell comprises a back cover, the side wall of the shell is provided with a wire outlet hole for the coil wire outlet to pass through to the outside of the shell, the back cover is provided with a notch for the coil wire outlet to pass through at the position of the wire outlet hole, a protective member for protecting the coil wire outlet during the transportation of the shell is detachably provided in the notch, and the wire outlet hole is provided with a protective member for preventing the coil wire outlet from excessively rubbing or contacting with the wire outlet hole.

[0005] The advantages of adopting the above technical scheme are as follows: in the above technology, the heat dissipation holes and the wire outlet holes are staggered and the coil wire outlet part passes through the wire outlet hole to the outside of the shell. Compared with the technical structure in which the coil wire outlet part passes through the heat dissipation holes to the outside of the shell in the traditional magnetic powder brake, this technology can effectively avoid the coil wire outlet part occupying too much space in the heat dissipation holes and affecting the heat dissipation efficiency, thereby avoiding the heat dissipation efficiency of the magnetic powder brake from being affected; in the above technology, the protective part is provided to avoid the coil wire outlet part outside the shell from being affected by external stress or bumping during the transportation of the magnetic powder brake, resulting in damage or breakage. The protective part is provided to avoid excessive friction or contact between the coil wire outlet part and the wire outlet hole during the installation or transportation of the magnetic powder brake, resulting in damage or breakage, thereby reducing the wear rate and damage rate of the coil wire outlet part, thereby reducing the scrap rate and maintenance rate of the finished product.

[0006] The utility model is further provided with: a protective sleeve is inserted in the wire outlet hole, the protective sleeve is made of rubber material, the protective sleeve is hollow and has a through hole for the coil wire outlet to pass through, the through hole is coaxially arranged with the wire outlet hole, retaining rings are arranged on the outer circumferential walls at both ends of the protective sleeve, the retaining rings and the protective sleeve are integrally formed, the inner circumferential wall of one of the retaining rings is abutted and matched with the inner wall of the cavity, and the inner circumferential wall of the other retaining ring is abutted and matched with the side wall of the shell, and the protective sleeve is a protective member.

[0007] The advantages of adopting the above technical scheme are: in the above technology, the protective sleeve is made of rubber material, which has a certain elasticity and softness, so as to prevent the coil from being broken or damaged due to excessive contact or friction at the junction between the coil wire outlet part and the inner circumferential wall of the wire outlet hole or the opening of the wire outlet hole; in the above technology, the two retaining rings are integrally connected to the protective sleeve, and the junction between the inner circumferential wall of the traditional heat dissipation hole and the side wall of the shell is a right-angled chamfer, so that during the installation of the magnetic powder brake, the coil wire outlet part contacts the chamfer and is scratched by the chamfer or the coil wire outlet part is broken, while in this technology, the junction between the inner circumferential wall of the wire outlet hole and the inner wall of the cavity and the junction between the inner circumferential wall of the wire outlet hole and the side wall of the shell are both right-angled chamfers, but the two chamfers can be respectively blocked by the connection between the two retaining rings and the protective sleeve, so as to avoid the wire outlet part directly contacting the chamfer, and then avoiding the wire outlet part being scratched or broken, thereby reducing the wear rate and damage rate of the coil wire outlet part, and then reducing the scrap rate and maintenance rate of the finished product.

[0008] The utility model is further provided that: the protective member includes a protective shell, a groove for accommodating the coil outlet portion is opened at the front end of the protective shell along the axial direction of the shell, the opening of the groove is arranged toward the outlet hole, the radial cross-sectional shape of the protective shell is adapted to the radial cross-sectional shape of the notch, and the protective shell and the notch are snap-fitted.

[0009] The benefits of adopting the above technical solution are: in the above technology, before the magnetic powder brake is transported, the shell places the coil outlet part into the receiving groove and clamps the protective shell in the notch, so as to realize the wrapping and accommodation of the coil outlet part by the receiving groove, and at the same time, the opening of the receiving groove is attached to the side wall of the shell, thereby avoiding external stress directly acting on the coil outlet part to cause damage to the coil outlet part, and at the same time avoiding external impurities or liquids from eroding the coil outlet part, thereby improving the integrity of the coil outlet part.

[0010] The utility model is further configured as follows: both side walls of the protective shell are provided with ribs extending toward the outer wall of the rear cover, a first opening is provided on the ribs, a second opening is provided on the rear cover corresponding to the position of the first opening, and mounting bolts are threadedly connected between the two first openings and the corresponding second openings.

[0011] The benefit of adopting the above technical solution is that the setting of the retaining edge in the above technology is used to fix the protective shell in the notch by installing bolts after the protective shell is stuck in the notch, thereby avoiding the protective shell and the notch being separated during the transportation of the magnetic powder brake, resulting in failure of the protection of the coil outlet part.

[0012] The utility model is further configured that: the protective shell is provided with an anti-skid pad for contacting the inner wall of the notch, and the anti-skid pad is made of rubber material.

[0013] The advantages of adopting the above technical solution are: the provision of the anti-slip pad improves the connection strength between the protective shell and the notch, thereby improving the stability of the protective shell in the notch.

[0014] The utility model is further configured that: the protective shell is made of plastic material.

[0015] The advantages of adopting the above technical solution are: in the above technology, the protective shell is made of plastic material, so that the protective shell has a certain deformation ability, thereby enabling the protective shell to adapt to the notch and snap fit. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a side partial cross-sectional view of the utility model;

[0017] Figure 2 This is a front view of the rear cover of the utility model;

[0018] Figure 3 This is a front view of the utility model in which the rear cover and the protective shell are combined;

[0019] Figure 4 It is a cross-sectional view of the protective cover in the utility model;

[0020] Figure 5 It is a side view of the protective shell in the utility model. DETAILED DESCRIPTION

[0021] The utility model provides a magnetic powder brake for changing the coil outlet, comprising a shell 1 and a brake mechanism, wherein the shell 1 is hollow and has a cavity for accommodating the brake mechanism, the brake mechanism comprises a coil, a heat dissipation hole 11 is provided on the outer peripheral wall of the shell 1, the shell 1 comprises a back cover 2, a wire outlet hole 12 is provided on the side wall of the shell 1 for the coil outlet part 3 to pass through to the outside of the shell 1, the back cover 2 is provided with a notch 21 for the coil outlet part 3 to pass through at a position corresponding to the wire outlet hole 12, and a detachable arrangement is provided in the notch 21 There is a protective member for protecting the coil outlet portion 3 during transportation of the housing 1, and the outlet hole 12 is provided with a protective member for preventing the coil outlet portion 3 from excessive friction or contact with the outlet hole 12. A protective sleeve 4 is inserted in the outlet hole 12, and the protective sleeve 4 is made of rubber material. The protective sleeve 4 is hollow and has a through hole 41 for the coil outlet portion 3 to pass through. The through hole 41 is coaxially arranged with the outlet hole 12. The outer peripheral walls at both ends of the protective sleeve 4 are provided with retaining rings 42, and the retaining rings 42 are integrally formed with the protective sleeve 4. The inner circumferential wall of one of the retaining rings 42 is abutted against the inner wall of the cavity, and the inner circumferential wall of the other retaining ring 42 is abutted against the side wall of the shell 1. The protective sleeve 4 is a protective member, and the protective member includes a protective shell 5. The front end of the protective shell 5 is provided with a receiving groove 51 for accommodating the coil outlet portion 3 along the axial direction of the shell 1. The opening of the receiving groove 51 is arranged toward the outlet hole 12. The radial cross-sectional shape of the protective shell 5 is adapted to the radial cross-sectional shape of the notch 21, and the protective shell 5 is locked with the notch 21. The protective shell 5 is provided with ribs 52 on both side walls extending toward the outer wall of the rear cover 2, and a first opening 521 is provided on the ribs 52. The rear cover 2 is provided with a second opening 22 at a position corresponding to the first opening 521. The two first openings 521 are threadedly connected to the corresponding second openings 22 by mounting bolts 221. The protective shell 5 is provided with an anti-skid pad 53 for contacting the inner wall of the notch 21. The anti-skid pad 53 is made of rubber material, and the protective shell 5 is made of plastic material.

[0022] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which shall fall within the scope of the utility model to be protected. The scope of protection of the utility model shall be defined by the attached claims and their equivalents.

Claims

1. A magnetic powder brake with a changed coil outlet, comprising a housing and a brake mechanism, wherein the housing is hollow and has a cavity for accommodating the brake mechanism, the brake mechanism comprises a coil, a heat dissipation hole is provided on the outer peripheral wall of the housing, and the housing comprises a rear cover, characterized in that: The shell side wall is provided with an outlet hole for the coil outlet to pass through to the outside of the shell, the back cover is provided with a notch for the coil outlet to pass through at the position corresponding to the outlet hole, a protective member for protecting the coil outlet during transportation of the shell is detachably provided in the notch, and a protective member for preventing excessive friction or contact between the coil outlet and the outlet hole is provided on the outlet hole.

2. A magnetic powder brake with a changed coil outlet according to claim 1, characterized in that: A protective sleeve is inserted in the wire outlet hole, the protective sleeve is made of rubber material, the protective sleeve is hollow and has a through hole for the coil wire outlet to pass through, the through hole is coaxially arranged with the wire outlet hole, retaining rings are arranged on the outer circumferential walls at both ends of the protective sleeve, the retaining rings and the protective sleeve are integrally formed, the inner circumferential wall of one of the retaining rings is abutted and matched with the inner wall of the cavity, and the inner circumferential wall of the other retaining ring is abutted and matched with the side wall of the shell, and the protective sleeve is a protective component.

3. The magnetic powder brake with a changed coil outlet according to claim 1, characterized in that: The protective member comprises a protective shell, a groove for accommodating the coil wire outlet portion is provided at the front end of the protective shell along the axial direction of the shell, the opening of the groove is arranged toward the wire outlet hole, the radial cross-sectional shape of the protective shell is adapted to the radial cross-sectional shape of the notch, and the protective shell is snap-fitted with the notch.

4. A magnetic powder brake with a changed coil outlet according to claim 3, characterized in that: The protective shell has sidewalls on both sides extending toward the outer wall of the rear cover, the sidewalls are provided with a first opening, the rear cover has a second opening corresponding to the first opening, and the two first openings are threadedly connected to the corresponding second openings by mounting bolts.

5. The magnetic powder brake for changing the coil outlet according to claim 3, characterized in that: The protective shell is provided with an anti-skid pad for contacting the inner wall of the notch, and the anti-skid pad is made of rubber material.

6. The magnetic powder brake with a changed coil outlet according to claim 3, characterized in that: The protective shell is made of plastic material.

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