阅读说明：本技术 一种带有刹车装置的推杆直流电机 (Push rod direct current motor with brake equipment ) 是由 吴先财 万勇 杨忠 方绍林 于 2021-06-23 设计创作，主要内容包括：本发明公开一种带有刹车装置的推杆直流电机,涉及推杆电机技术领域,主要结构包括电机组件、刹车组件和前端盖组件；所述刹车组件设置于所述电机组件的后端,所述前端盖组件设置于所述电机组件的前端；所述前端盖组件用于检测所述电机组件中转轴的转速。其中刹车组件通过抱闸弹簧使多个刹车片抱紧电机组件的转轴,只有当转轴正向转动时,依靠转轴与多个刹车片的摩擦力使抱闸弹簧解除刹车,而转轴反转时则抱闸弹簧抱紧多个刹车片进一步提升刹车力度,从而避免转轴反转；同时,通过前端盖组件检测转轴的转速,以便于对推杆直流电机的工作状态进行调整。(The invention discloses a push rod direct current motor with a brake device, which relates to the technical field of push rod motors and mainly structurally comprises a motor assembly, a brake assembly and a front end cover assembly; the brake assembly is arranged at the rear end of the motor assembly, and the front end cover assembly is arranged at the front end of the motor assembly; the front end cover assembly is used for detecting the rotating speed of the rotating shaft in the motor assembly. The brake assembly enables the brake pads to tightly hold the rotating shaft of the motor assembly through the brake springs, only when the rotating shaft rotates in the forward direction, the brake springs are relieved from braking by means of friction force between the rotating shaft and the brake pads, and when the rotating shaft rotates reversely, the brake springs tightly hold the brake pads to further improve braking force, so that the rotating shaft is prevented from rotating reversely; simultaneously, detect the rotational speed of pivot through the front end housing subassembly to adjust push rod DC motor's operating condition.)

1. A push rod direct current motor with a brake device is characterized by comprising a motor component, a brake component and a front end cover component; the brake assembly is arranged at the rear end of the motor assembly, and the front end cover assembly is arranged at the front end of the motor assembly; the front end cover assembly is used for detecting the rotating speed of the rotating shaft in the motor assembly.

2. The push rod direct current motor with a brake device as claimed in claim 1, wherein the motor assembly comprises a housing, a rear end cap, a rotating shaft, a rotor, a magnetic shoe, a commutator, a front end plate and a rear end plate; the rear end cover is arranged at the rear end of the shell; the front end cover assembly is arranged at the front end of the shell; the rotating shaft penetrates through the rear end cover and the front end cover assembly; the brake assembly is arranged on the rear end cover and sleeved on the rear end of the rotating shaft; the magnetic shoe is arranged on the inner wall of the shell; the rotor is sleeved on the rotating shaft and corresponds to the magnetic shoe in position; the front end plate and the rear end plate are all sleeved on the rotating shaft and are respectively located at the front end and the rear end of the rotor, and the commutator is sleeved on the rotating shaft and is located at the front end of the front end plate.

3. The push rod direct current motor with a brake device as claimed in claim 1, wherein the brake assembly comprises a brake ring, a band-type brake spring, a brake cover and a fastening screw; the brake cover is provided with a containing hole, the brake ring is arranged in the containing hole, the brake ring is sleeved with the band-type brake spring, the brake ring is arranged outside the brake ring, and the fastening screw is used for connecting the brake cover with the motor assembly.

4. The direct current motor of claim 3, wherein the brake ring comprises a plurality of brake pads, and the plurality of brake pads are formed into a circular ring shape.

5. The push rod direct current motor with the brake device as claimed in claim 1, wherein the front cover assembly comprises a front cover and a detection assembly, the detection assembly is disposed on a side of the front cover facing the motor assembly, and the front cover is used for being connected with the motor assembly.

6. The push rod direct current motor with the brake device as claimed in claim 5, wherein the detection assembly comprises a copper-clad plate, a through hole is formed in the middle of the copper-clad plate, and an inductor, a Y capacitor, a copper brush box, a temperature controller, a chip resistor, a Hall element and a chip capacitor are arranged around the through hole; the copper brush box is arranged towards an opening on one side of the through hole, a carbon brush is arranged in the copper brush box, and a spring is arranged between the carbon brush and the other side of the copper brush box.

7. The direct current motor with a brake device of claim 6, wherein the carbon brush is connected to one electrode of the inductor through an elastic wire.

8. The direct current motor as claimed in claim 5, wherein the detecting assembly further comprises a magnetic ring disposed on the shaft of the motor assembly.

Technical Field

The invention relates to the technical field of push rod motors, in particular to a push rod direct current motor with a brake device.

Background

The push rod direct current motor is a universal auxiliary driving device, can be widely applied to industries such as electric power, machinery, metallurgy, traffic, mine, petroleum, chemical engineering, hoisting, transportation, building, grain and feed processing and has the characteristics of reliable performance, sensitive action, stable operation, the same push-pull force, good environmental adaptability and the like.

The push rod direct current motor generally comprises a motor, the motor drives a transmission screw to rotate, the transmission screw drives a nut to reciprocate when rotating, and a motor brake device is generally arranged on the electric push rod.

The existing push rod direct current motor cannot directly detect the rotating speed.

Disclosure of Invention

In order to solve the technical problems, the invention provides a push rod direct current motor with a brake device, which can detect the rotating speed of the push rod direct current motor during working.

In order to achieve the purpose, the invention provides the following scheme:

the invention provides a push rod direct current motor with a brake device, which comprises a motor component, a brake component and a front end cover component, wherein the motor component is arranged on the front end cover component; the brake assembly is arranged at the rear end of the motor assembly, and the front end cover assembly is arranged at the front end of the motor assembly; the front end cover assembly is used for detecting the rotating speed of the rotating shaft in the motor assembly.

Optionally, the motor assembly includes a casing, a rear end cover, a rotating shaft, a rotor, a magnetic shoe, a commutator, a front end plate and a rear end plate; the rear end cover is arranged at the rear end of the shell; the front end cover assembly is arranged at the front end of the shell; the rotating shaft penetrates through the rear end cover and the front end cover assembly; the brake assembly is arranged on the rear end cover and sleeved on the rear end of the rotating shaft; the magnetic shoe is arranged on the inner wall of the shell; the rotor is sleeved on the rotating shaft and corresponds to the magnetic shoe in position; the front end plate and the rear end plate are all sleeved on the rotating shaft and are respectively located at the front end and the rear end of the rotor, and the commutator is sleeved on the rotating shaft and is located at the front end of the front end plate.

Optionally, the brake assembly comprises a brake ring, a band-type brake spring, a brake cover and a fastening screw; the brake cover is provided with a containing hole, the brake ring is arranged in the containing hole, the brake ring is sleeved with the band-type brake spring, the brake ring is arranged outside the brake ring, and the fastening screw is used for connecting the brake cover with the motor assembly.

Optionally, the brake ring includes a plurality of brake blocks, a plurality of brake blocks enclose into the ring form.

Optionally, the front end cover assembly includes a front end cover and a detection assembly, the detection assembly is disposed on one side of the front end cover facing the motor assembly, and the front end cover is used for being connected with the motor assembly.

Optionally, the detection assembly comprises a copper-clad plate, a through hole is formed in the middle of the copper-clad plate, and an inductor, a Y capacitor, a copper brush box, a temperature controller, a chip resistor, a hall element and a chip capacitor are arranged around the through hole; the copper brush box is arranged towards an opening on one side of the through hole, a carbon brush is arranged in the copper brush box, and a spring is arranged between the carbon brush and the other side of the copper brush box.

Optionally, the carbon brush is connected with one electrode of the inductor through an elastic wire.

Optionally, the detection assembly further includes a magnetic ring sleeved on the rotating shaft of the motor assembly.

Compared with the prior art, the invention has the following technical effects:

the push rod direct current motor with the brake device mainly structurally comprises a motor assembly, a brake assembly and a front end cover assembly; the brake assembly enables the brake pads to tightly hold the rotating shaft of the motor assembly through the brake springs, only when the rotating shaft rotates in the forward direction, the brake springs are relieved from braking by means of friction force between the rotating shaft and the brake pads, and when the rotating shaft rotates reversely, the brake springs tightly hold the brake pads to further improve braking force, so that the rotating shaft is prevented from rotating reversely; simultaneously, detect the rotational speed of pivot through the front end housing subassembly to adjust push rod DC motor's operating condition.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a push rod DC motor with a brake device according to the present invention;

FIG. 2 is a schematic cross-sectional view of a push rod DC motor with a brake device according to the present invention;

FIG. 3 is a schematic structural diagram of a brake assembly in the push rod DC motor with a brake device according to the present invention;

FIG. 4 is an exploded view of the brake assembly of the push rod DC motor with a brake device according to the present invention;

FIG. 5 is a schematic structural diagram of a front end cover assembly of the push rod DC motor with a brake device according to the present invention;

FIG. 6 is an exploded view of the front cover assembly of the push rod DC motor with a brake according to the present invention;

fig. 7 is an exploded view of the dc motor with brake device for a push rod according to the present invention.

Description of reference numerals: 1. a rotating shaft; 2. a front end cap assembly; 3. a housing; 4. a rear end cap; 5. a brake assembly;

01. a clamp spring; 02. a rolling bearing; 03. a magnetic ring; 04. enamelled wires; 05. a first screw; 06. a magnetic shoe fixing sheet; 07. a magnetic shoe; 08. a rear end plate; 09. slot insulating paper; 10. a rotor core; 11. a front end plate; 12. a commutator;

21. a front end cover; 22. a copper brush box; 23. a spring; 24. a carbon brush; 25. copper-clad plate; 26. a temperature controller; 27. a second screw; 28. an inductance; 29. a Y capacitor; 30. a chip resistor; 31. a Hall element; 32. a chip capacitor;

51. a brake ring; 52. a band-type brake spring; 53. a brake cover; 54. and (5) fastening the screw.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 7, the embodiment provides a push rod dc motor with a brake device, which includes a motor assembly, a brake assembly 5 and a front cover assembly 2; the brake component 5 is arranged at the rear end of the motor component, and the front end cover component 2 is arranged at the front end of the motor component; the front end cover assembly 2 is used for detecting the rotating speed of the rotating shaft 1 in the motor assembly.

In this embodiment, the motor assembly includes a casing 3, a rear end cover 4, a rotating shaft 1, a rotor, a magnetic shoe 07, a commutator 12, a front end plate 11, and a rear end plate 08; the rear end cover 4 is arranged at the rear end of the shell 3; the front end cover assembly 2 is arranged at the front end of the shell 3; the rotating shaft 1 penetrates through the rear end cover 4 and the front end cover assembly 2; the brake component 5 is arranged on the rear end cover 4, and the brake component 5 is sleeved on the rear end of the rotating shaft 1; the magnetic shoe 07 is arranged on the inner wall of the shell 3; the rotor is sleeved on the rotating shaft 1 and corresponds to the magnetic shoe 07 in position; the front end plate 11 with the rear end plate 08 is all located in the pivot 1 and is located respectively the front end and the rear end of rotor, the commutator 12 is located in the pivot 1 and is located the front end of front end plate 11. More specifically, the rotor includes a rotor core 10, a groove insulation paper 09 is disposed on a groove of the rotor core 10, and a coil wound by an enameled wire 04 is disposed inside the groove of the rotor core 10 and outside the groove insulation paper 09.

The brake component 5 comprises a brake ring 51, a band-type brake spring 52, a brake cover 53 and a fastening screw 54; be provided with the accommodation hole on the brake lid 53, brake ring 51 set up in the accommodation hole, band-type brake spring 52 cover is located brake ring 51 is outside, fastening screw 54 is used for brake lid 53 with motor element's connection. The brake ring 51 comprises three brake pads, and the three brake pads are enclosed into a circular ring shape. Further, the band-type brake spring 52 is a torsion spring, and the spiral direction of the band-type brake spring 52 is opposite to the normal rotation direction of the rotating shaft 1, so that when the rotating shaft 1 rotates normally, the rotating shaft 1 rubs against the three brake pads, the three brake pads expand outwards along the radial direction, the band-type brake spring 52 twists to a certain extent in the direction opposite to the spiral direction, the holding force of the band-type brake spring 52 on the three brake pads is reduced, so as to release the brake, when the rotating shaft 1 receives an external force and has a reverse rotation tendency, the friction of the rotating shaft 1 and the three brake pads drives the band-type brake spring 52 to twist along the spiral direction, the holding force of the band-type brake spring 52 on the three brake pads is further improved, so as to increase the braking force and prevent the rotating shaft 1 from reversing.

The front end cover assembly 2 comprises a front end cover 21 and a detection assembly, the detection assembly is arranged on one side, facing the motor assembly, of the front end cover 21, and the front end cover 21 is used for being connected with the motor assembly.

The detection assembly comprises a copper-clad plate 25, a through hole is formed in the middle of the copper-clad plate 25, and an inductor 28, a Y capacitor 29, a copper brush box 22, a temperature controller 26, a chip resistor 30, a Hall element 31 and a chip capacitor 32 are arranged around the through hole; the copper brush box 22 is arranged towards an opening on one side of the through hole, a carbon brush 24 is arranged in the copper brush box 22, and a spring 23 is arranged between the carbon brush 24 and the other side of the copper brush box 22. The carbon brush 24 is connected to one electrode of the inductor 28 by an elastic wire. The detection assembly further comprises a magnetic ring 03 sleeved on the rotating shaft 1 of the motor assembly. The change of the magnetic field frequency of the magnetic ring 03 is induced by the hall element 31 to detect the rotating speed of the rotating shaft 1. One side of the copper brush box 22 is disposed in a long groove extending from the open end of the copper brush box 22 to the middle of the copper brush box 22, one end of the elastic wire is connected to the carbon brush 24, and the other end of the elastic wire passes through the long groove and contacts with one electrode of the inductor 28.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.