CN112727946A

CN112727946A - Electromagnetic clutch with strong suction force and good force bearing balance and wear resistance

Info

Publication number: CN112727946A
Application number: CN202011583051.3A
Authority: CN
Inventors: 王天甜; 王万年; 唐慧; 唐洪珍
Original assignee: Keda Automation Group Co ltd
Current assignee: Keda Automation Group Co ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-04-30

Abstract

The invention discloses an electromagnetic clutch with strong suction force and balanced bearing force and good wear resistance, which comprises a driving part and a driven part, wherein one side of the driving part, which is close to the driven part, is provided with a friction part, the surface of one side of the friction part, which is close to the driven part, is provided with a friction groove, the driven part is provided with a movable ring at a position corresponding to the friction groove, the surface of the movable ring is provided with a friction convex tooth, the inner wall of the movable ring is provided with a connecting groove, a connecting frame is arranged in the connecting groove, a plurality of connecting rods are uniformly fixed in the connecting frame, the connecting rods penetrate through the inner wall of the through groove and extend into the driven part, and one end of the; the friction convex teeth are arranged on the surface of the movable ring capable of moving back and forth, so that the driving part can rotate at high speed to perform power-on suction operation, and the situation that the convex teeth are abraded and cracked cannot occur.

Description

Electromagnetic clutch with strong suction force and good force bearing balance and wear resistance

Technical Field

The invention relates to the technical field of electromagnetic clutches, in particular to an electromagnetic clutch with strong suction force and balanced bearing force and good wear resistance.

Background

The electromagnetic clutch is an electromagnetic mechanical connector which uses the electromagnetic induction principle and the friction force between inner and outer friction plates to make two parts in mechanical transmission system rotate, and under the condition that the driving part does not stop rotating, the driven part can be combined with or separated from the driving part, so that it is an automatic executing electric appliance. The electromagnetic clutch can be used for controlling the starting, reversing, speed regulating and braking of machinery, and has the characteristics of simple structure, quick action, small control energy and convenience for remote control, so that the electromagnetic clutch is widely applied to various machine tools and mechanical transmission systems.

The electromagnetic clutch is used to transmit the torque of the executing mechanism from the driving shaft side to the driven shaft side, and is widely used in various mechanisms to realize the functions of quick start, braking, positive and negative rotation or speed regulation, etc. At present, the electromagnetic clutch can be divided into a single-friction-plate electromagnetic clutch, a multi-friction-plate electromagnetic clutch and a jaw electromagnetic clutch, wherein the maximum braking torque value of the jaw electromagnetic clutch is highest, the force bearing performance and the wear resistance performance are good, the jaw clutch and the common clutch can be separated in high-speed rotation, but the jaw clutch has to require that teeth on two sides are relatively static in the moment of clutch suction, if the jaw clutch is sucked in relative high-speed movement, the convex teeth are abraded and broken, and the clutch can be damaged seriously.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, and provides an electromagnetic clutch which is strong in suction force and good in bearing force balance and wear resistance.

In order to achieve the purpose, the invention adopts the following technical scheme:

the electromagnetic clutch comprises a driving part and a driven part, wherein the driving part is internally provided with the attraction part, one side of the driving part, which is close to the driven part, is provided with a friction part, one side surface of the friction part, which is close to the driven part, is provided with a friction groove, the position of the driven part, which corresponds to the friction groove, is provided with a through groove, a movable ring is placed in the through groove, the surface of the movable ring is provided with a friction convex tooth corresponding to the friction groove, the outer wall of one side, which is far away from the driving part, of the movable ring and the inner wall of the bottom of the through groove are both provided with threads, the thread size corresponding to the movable ring is smaller than the threads corresponding to the through groove, the inner wall of the movable ring is provided with a connecting groove, a connecting frame is placed in the connecting groove, a plurality of connecting rods are uniformly fixed in the connecting frame, the connecting rods penetrate, and an elastic limiting assembly is arranged at one end of the connecting rod, which is positioned in the driven part.

As a preferred technical scheme of the present invention, the elastic limiting assembly includes a limiting groove and an elastic diaphragm, the limiting groove is disposed inside the driven component, one end of the connecting rod extends into the limiting groove from the through groove to connect with the elastic diaphragm, and the elastic diaphragm is connected with the inner wall of the limiting groove through a limiting support.

As a preferable technical scheme, the inner wall surface of the limiting groove close to the connecting rod is provided with a buffer cushion block.

As a preferable technical solution of the present invention, a ball bearing is provided at a position where the connecting groove is close to the connecting frame.

As a preferable technical solution of the present invention, a driving shaft is provided at a central position of the driving member.

Compared with the prior art, the invention has the beneficial effects that:

1. the friction convex teeth are arranged on the surface of the movable ring capable of moving back and forth, so that the driving part can be rotated at a high speed to perform power-on suction operation, and the situation that the convex teeth are abraded and cracked can not occur.

2. The invention dynamically connects the elastic diaphragm and the movable ring together through the movable rod, under the condition that the movable ring does not have enough centrifugal force, the elastic diaphragm can pull the movable ring back into the through groove, so that the movable ring can automatically return to the original position after the driving part and the driven part are disconnected and separated each time, the next power-on suction process cannot be influenced, and the electromagnetic clutch can be dynamically connected with the friction groove due to the dynamic connection of the friction convex teeth

The device has strong suction force and balanced bearing force and good wear resistance.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention;

FIG. 3 is a side cross-sectional view of the present invention;

FIG. 4 is a schematic diagram of an intermediate structure of the present invention;

FIG. 5 is a schematic view of the internal structure of the present invention;

fig. 6 is a detailed structure diagram of the present invention.

In the figure: the device comprises a driving shaft 1, a driving part 2, a friction part 3, a driven part 4, a suction part 5, a through groove 6, a movable ring 7, a limiting groove 8, a friction groove 9, a friction convex tooth 10, a connecting rod 11, an elastic diaphragm 12, a limiting support 13, a buffer cushion block 14, a ball bearing 15, a connecting frame 16 and a connecting groove 17.

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.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1-6, the present invention provides a technical solution: an electromagnetic clutch with strong suction force and good bearing balance wear resistance comprises a driving part 2 and a driven part 4, wherein the driving part 2 is internally provided with a suction part 5 for sucking the driven part 4 when being electrified, one side of the driving part 2 close to the driven part 4 is provided with a friction part 3 for connecting the driving part 2 and the driven part 4 into a whole, one side surface of the friction part 3 close to the driven part 4 is provided with a friction groove 9 for increasing the friction resistance between the two parts so as to prevent the two parts from slipping mutually, the maximum torque borne by the electromagnetic clutch is increased, the driven part 4 is provided with a through groove 6 corresponding to the friction groove 9, a movable ring 7 is placed in the through groove 6, the surface of the movable ring 7 is provided with a friction convex tooth 10 corresponding to the friction groove 9, the friction convex tooth 10 is dynamically connected with the friction groove 9, and the occurrence of the abrasion and breakage of the convex tooth can be prevented, because the movable ring 7 is in a state of being pulled towards the bottom of the through groove 6 by the connecting rod 11 before the electromagnetic clutch is electrified for actuation, the movable ring 7 can not contact the surface of the friction part 3 immediately during actuation, the outer wall of one side of the movable ring 7, which is far away from the driving part 2, and the inner wall of the bottom of the through groove 6 are both provided with threads, the thread size corresponding to the movable ring 7 is smaller than that of the threads corresponding to the through groove 6, the movable ring 7 is far away from the through groove 6 along the spiral direction under high-speed rotation due to the control of the centrifugal direction of the movable ring 7, the inner wall of the movable ring 7 is provided with the connecting groove 17, the connecting frame 16 is arranged in the connecting groove 17, the connecting frames 11 are uniformly fixed in the connecting frame 16, the connecting rods 11 penetrate through the inner wall of the through groove 6 and extend into the driven part 4, the movable ring 7 approaches the friction part 3 during high-, can synchronously move with the movable ring 7, and one end of the connecting rod 11, which is positioned inside the driven part 4, is provided with an elastic limiting component.

Further, the spacing subassembly of elasticity includes spacing groove 8 and elastic diaphragm 12, spacing groove 8 sets up the inside at driven part 4, the one end of connecting rod 11 is extended into spacing inslot 8 inside from leading to groove 6 and is linked to each other with elastic diaphragm 12, elastic diaphragm 12 passes through spacing support 13 and links to each other with spacing groove 8's inner wall, under the condition that loose ring 7 does not have sufficient centrifugal force effect, elastic diaphragm 12 can pull back loose ring 7 and lead to the inslot 6, make 2 and 4 outage separation backs of driven part at every turn driving part, loose ring 7 can both get back to original position automatically, can not influence next circular telegram actuation process.

Furthermore, the inner wall surface of the limiting groove 8 close to the connecting rod 11 is provided with a buffer cushion block 14, so that the elastic membrane 12 is prevented from being worn in the process of stretching deformation.

Further, a ball bearing 15 is disposed at a position where the connecting groove 17 is close to the connecting frame 16, for reducing friction between the movable ring 7 and the connecting frame 16.

Further, a driving shaft 1 is arranged at the center of the driving component 2 and is used for providing power for rotating the clutch.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The electromagnetic clutch is characterized in that the attraction part (5) is arranged in the driving part (2), one side, close to the driven part (4), of the driving part (2) is provided with a friction part (3), one side, close to the driven part (4), of the driving part (2) is provided with a friction groove (9), the position, corresponding to the friction groove (9), of the driven part (4) is provided with a through groove (6), a movable ring (7) is placed in the through groove (6), the surface of the movable ring (7) is provided with a friction convex tooth (10) corresponding to the friction groove (9), the outer wall of one side, far away from the driving part (2), of the movable ring (7) is provided with threads with the inner wall of the bottom of the through groove (6), and the thread size corresponding to the movable ring (7) is smaller than the threads corresponding to the through groove (6), the inner wall of activity ring (7) is equipped with spread groove (17), put connecting frame (16) in spread groove (17), inside evenly being fixed with a plurality of connecting rods (11) of connecting frame (16), connecting rod (11) run through the inner wall that leads to groove (6) and extend into the inside of driven part (4), the one end that connecting rod (11) are located driven part (4) inside is equipped with the spacing subassembly of elasticity.

2. The electromagnetic clutch with strong suction force and good force bearing balance wear resistance as claimed in claim 1, wherein the elastic limiting component comprises a limiting groove (8) and an elastic diaphragm (12), the limiting groove (8) is arranged inside the driven part (4), one end of the connecting rod (11) extends into the limiting groove (8) from the through groove (6) to be connected with the elastic diaphragm (12), and the elastic diaphragm (12) is connected with the inner wall of the limiting groove (8) through a limiting support (13).

3. The electromagnetic clutch with strong suction force and balanced bearing force and good wear resistance as claimed in claim 2, characterized in that the inner wall surface of the limiting groove (8) near the connecting rod (11) is provided with a cushion block (14).

4. The electromagnetic clutch with strong suction force and balanced bearing force and good wear resistance as claimed in claim 1 is characterized in that the ball bearing (15) is arranged at the position where the connecting groove (17) is close to the connecting frame (16).

5. The electromagnetic clutch with strong suction force and balanced bearing force and good wear resistance as claimed in claim 1 is characterized in that the driving shaft (1) is arranged at the center of the driving part (2).