CN111828500A

CN111828500A - Clamping device of jaw electromagnetic clutch

Info

Publication number: CN111828500A
Application number: CN202010510682.6A
Authority: CN
Inventors: 王旭
Original assignee: 王旭
Current assignee: Huzhou Xinbao Automation Technology Co.,Ltd.
Priority date: 2020-06-08
Filing date: 2020-06-08
Publication date: 2020-10-27
Anticipated expiration: 2040-06-08
Also published as: CN111828500B

Abstract

The invention relates to the technical field of mechanical equipment and discloses a clamping device of a jaw electromagnetic clutch, which comprises a machine shell, wherein one end of an inner cavity of the machine shell is movably connected with a driving shaft, an inner cavity of the machine shell is fixedly connected with a magnetic yoke movably connected with the outer surface of the driving shaft, and the middle part of the inner cavity of the magnetic yoke is fixedly provided with a coil I. According to the invention, through the novel clamping mechanism, when the coil I is electrified, the coil I generates magnetic force to enable the magnetic block to repel outwards, the driven disc is attracted to the driving disc, one end of the magnetic block is contacted with one end of the driven disc to generate friction, the driving disc is clamped with one end of the magnetic block to enable the magnetic block and the driving shaft to rotate synchronously, the driven disc drives the driven shaft to rotate through the friction generated by the magnetic block and the driven disc, and along with the increase of the current of the coil I, the friction between the magnetic block and the driven disc is increased, the rotating speed of the driven shaft is increased, the rotating speed difference between the driving shaft and the driven shaft is reduced, and the clamping block is more easily clamped with the movable.

Description

Clamping device of jaw electromagnetic clutch

Technical Field

The invention relates to the technical field of mechanical equipment, in particular to a clamping device of a jaw electromagnetic clutch.

Background

The clutch is a device similar to a switch, and has a power transmission action of connection or disconnection, a driving part and a driven part of a clutch mechanism can be temporarily separated and gradually connected, and relative rotation is possible in a transmission process.

The electromagnetic clutch is a component which makes two rotary motion in a mechanical transmission system by applying the electromagnetic induction principle and the friction force between an inner friction plate and an outer friction plate, an electromagnetic mechanical connector with which a driven member can be coupled or decoupled without stopping rotation of a driving member, and conventional electromagnetic clutches are classified into dog-type electromagnetic clutches and friction-type electromagnetic clutches, and the dog-type electromagnetic clutches have advantages of large torque transmission, no accumulated error, the combination of indexing and positioning can be made, but the disadvantage is that the combination can not be made at high speed, so when the electromagnetic jaw clutch is used, the rotation speed of the shaft cannot be too high, otherwise, the normal work of the jaw electromagnetic clutch is influenced, and because the electromagnetic clutch works for a long time, because the coil needs to be electrified continuously, the electromagnetic coil of the clutch can be heated abnormally, and the service life of the electromagnetic clutch is influenced.

Disclosure of Invention

Aiming at the defects of the existing jaw electromagnetic clutch in the background technology in the using process, the invention provides the clamping device of the jaw electromagnetic clutch, which has the advantages of auxiliary clamping and heat generation prevention and solves the problems in the background technology.

The invention provides the following technical scheme: a clamping device of a jaw electromagnetic clutch comprises a casing, wherein one end of an inner cavity of the casing is movably connected with a driving shaft, an inner cavity of the casing is fixedly connected with a magnetic yoke movably connected with the outer surface of the driving shaft, the middle part of the inner cavity of the magnetic yoke is fixedly provided with a coil I, one end of the driving shaft is fixedly connected with a driving disc positioned at one end of the middle part of the inner cavity of the casing, the other end of the inner cavity of the casing is movably connected with a driven shaft, one end of the driven shaft positioned at the inner cavity of the casing is fixedly connected with a spring I, one end of the spring I is fixedly connected with a driven disc, one end of the driven disc is movably sleeved with one end of the driven shaft through a guide rod, the inner cavity of the driven disc is fixedly provided with a coil II, one end of the, the lower end of the clamping block is connected with a bottom plate through a spring, the moving direction of the clamping block is perpendicular to the opening direction of the moving cavity, the inner cavity at one end of the driven plate is movably connected with a supporting plate located below the clamping block, one end of the supporting plate is movably connected with the inner cavity of the driven plate through a spring II, the middle of the driving plate located at one end of the middle of the inner cavity of the shell is movably connected with a magnetic block, and a magnetic pole on the inner side of the magnetic block is the same as a magnetic pole on.

Preferably, the movable block has been cup jointed in the inner chamber activity in activity chamber, and the movable block is "T" font, the draw-in groove has been seted up to the one end that the driven plate is located casing inner chamber middle part, the draw-in groove is located the one end in activity chamber top, and draw-in groove opening shape is the same with the vertical end shape of movable block.

Preferably, the shape of the upper end of the movable block is isosceles trapezoid, and the diameter value of the opening at the upper end of the movable cavity is the same as the length of the bottom edge of the isosceles trapezoid.

The invention has the following beneficial effects:

1. according to the invention, through the novel clamping mechanism, when the coil I is electrified, the coil I generates magnetic force to enable the magnetic block to repel outwards, the driven disc is attracted to the driving disc, one end of the magnetic block is contacted with one end of the driven disc to generate friction, the driving disc is clamped with one end of the magnetic block to enable the magnetic block and the driving shaft to rotate synchronously, the driven disc drives the driven shaft to rotate through the friction generated by the magnetic block and the driven disc, and along with the increase of the current of the coil I, the friction between the magnetic block and the driven disc is increased, the rotating speed of the driven shaft is increased, the rotating speed difference between the driving shaft and the driven shaft is reduced, and the clamping block is more easily clamped with the movable.

2. According to the invention, the power-off maintaining mechanism is additionally arranged, so that after the jaw electromagnetic clutch works, the movable block is jacked up in the movable cavity through the clamping block, the movable block is clamped with the clamping groove, and the driving disc and the driven disc of the electromagnetic clutch are connected through the centrifugal force generated when the electromagnetic clutch rotates and the supporting force generated by jacking the clamping block by the spring at the bottom of the clamping block, so that even if the coil I is powered off after the electromagnetic clutch works, the electromagnetic clutch still can play a transmission role, the abnormal heating phenomenon caused by long-time power-on of the coil I of the electromagnetic clutch is avoided, and the working life of the electromagnetic clutch is ensured.

Drawings

FIG. 1 is a schematic cross-sectional view of the structure of the present invention;

FIG. 2 is a schematic view of the structure of the present invention in a locked state;

FIG. 3 is an enlarged view of the point A in FIG. 1.

In the figure: 1. a housing; 2. a drive shaft; 3. a magnetic yoke; 4. a coil I; 5. a driving disk; 6. a driven shaft; 7. a driven plate; 8. a spring I; 9. a coil II; 10. a movable cavity; 11. a movable block; 12. a card slot; 13. a clamping block; 14. a support plate; 15. a spring II; 16. a magnetic block.

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.

Referring to fig. 1-3, a latch device of a jaw electromagnetic clutch comprises a casing 1, a driving shaft 2 is movably connected to one end of an inner cavity of the casing 1, a yoke 3 movably connected to an outer surface of the driving shaft 2 is fixedly connected to the inner cavity of the casing 1, a coil i 4 is fixedly installed in the middle of the inner cavity of the yoke 3, a driving disc 5 located at one end of the middle of the inner cavity of the casing 1 is fixedly connected to one end of the driving shaft 2, a driven shaft 6 is movably connected to the other end of the inner cavity of the casing 1, a spring i 8 is fixedly connected to one end of the driven shaft 6 located in the inner cavity of the casing 1, a driven disc 7 is fixedly connected to one end of the spring i 8, one end of the driven disc 7 is movably sleeved with one end of the driven shaft 6 through a guide rod, a coil ii 9 is fixedly installed in the inner cavity of the driven disc 7, a movable cavity, the lower end of the clamping block 13 is connected with a bottom plate through a spring, the moving direction of the clamping block 13 is vertical to the opening direction of the movable cavity 10, the inner cavity at one end of the driven disc 7 is movably connected with a supporting plate 14 positioned below the clamping block 13, one end of the supporting plate 14 is movably connected with the inner cavity of the driven disc 7 through a spring II 15, when the driven shaft 6 needs to stop rotating, the coil II 9 is electrified, the supporting plate 14 can move towards one side of the coil II 9 through the magnetic force generated by the coil II 9, the lower end of the clamping block 13 loses support and moves downwards, the movable block 11 automatically moves downwards, the driven disc 7 is separated from the driving disc 5, the driven shaft 6 stops rotating, after the driven shaft 6 stops rotating, the coil II 9 is powered off, the supporting plate 14 can automatically reset under the action of the spring II 15, the clamping block 13 is jacked up, the magnetic block 16 is movably connected to the middle part of the, and the magnetic pole of the inner side of the magnetic block 16 is the same as the magnetic pole of the outer side of the coil I4, so that after the coil I4 is electrified, the generated magnetic force can repel the magnetic block 16 outwards, the repulsive force between the coil I4 and the magnetic block 16 is increased along with the increase of the current of the coil I4, the magnetic block 16 is installed in the inner cavity of the middle of the driving disk 5, the size of the magnetic block 16 is smaller, and the repulsive force generated by the coil I4 to the magnetic block 16 is smaller than the attractive force to the driven disk 7.

Wherein, the movable block 11 has been cup jointed in the inner chamber activity of activity chamber 10, and movable block 11 is "T" font, draw-in groove 12 has been seted up to the one end that driven plate 7 is located 1 inner chamber middle part of casing, draw-in groove 12 is located the one end of activity chamber 10 top, and draw-in groove 12 opening shape is the same with the vertical end shape of movable block 11, make when I4 electric current of coil reaches after the certain size, fixture block 13 and the 10 lower extreme blocks in activity chamber, and jack-up movable block 11, make 11 upper ends of movable block and the 12 inner chamber blocks of draw-in groove, make when fixture block 13 with the driving plate 5 with driven plate 7 be connected the back, in time cut off I4 of coil, electromagnetic clutch still can ensure driven shaft 6 and driving shaft 2 synchronous.

Wherein, the shape of the upper end of the movable block 11 is isosceles trapezoid, and the opening diameter value of the upper end of the movable cavity 10 is the same as the length of the bottom edge of the isosceles trapezoid, so that after the movable block 11 is jacked upwards by the fixture block 13, the extending end of the movable block 11 can be just clamped with the clamping groove 12, and the upper end of the movable block 11 and the clamping groove 12 are both set to be isosceles trapezoid, so that when the driven disc 7 is separated from the driving disc 5, the clamping groove 12 can assist the movable block 11 to withdraw.

The using method of the invention is as follows: at the moment, the driving shaft 2 is in a rotating state, then the coil I4 is electrified, so that the coil I4 generates magnetic force, magnetic blocks 16 move to the right side of the driving disc 5 under the action of like poles repelling each other through conduction of the magnetic yoke 3, the driven disc 7 moves to the left side under the action of the magnetic force of the coil I4, the current in the coil I4 is continuously increased, the magnetic blocks 16 are in contact with the middle of the driven disc 7, the driving disc 5 rotates to drive the magnetic blocks 16 to rotate synchronously, the magnetic blocks 16 drive the driven disc 7 to rotate preliminarily through friction, the friction force between the magnetic blocks 16 and the driven disc 7 is increased along with the increase of the current in the coil I4, the rotating speed of the driven disc 7 is increased, the driven disc 7 drives the driven shaft 6 to rotate, the rotating speed difference between the driving shaft 2 and the driven shaft 6 is reduced, and the attraction force generated by the coil I4 to the driven disc 7 is, when the current in the coil I4 is increased to a certain degree, one side of the magnetic block 16 is tightly attached to the inner cavity of the driving disc 5, the clamping block 13 is ejected under the action of the spring and clamped into the movable cavity 10, the driven disc 7 and the driving disc 5 are clamped, the driven shaft 6 and the driving shaft 2 rotate at the same rotating speed, the clamping block 13 jacks up the movable block 11 at the moment, the upper end of the movable block 11 is clamped into the inner cavity of the clamping groove 12, the position of the movable block 11 is fixed through the centrifugal force generated when the electromagnetic clutch rotates and the supporting force of the clamping block 13 on the movable block 11, the driven disc 7 and the driving disc 5 are kept tightly attached, at the moment, even if the coil I4 is powered off, the driving shaft 2 can still drive the driven shaft 6 to synchronously rotate, when the clutch needs to be quickly switched off, the coil II 9 is powered on, and the coil II 9 generates magnetic force, and attract the backup pad 14 to one side that is close to coil II 9, make the bottom plate of fixture block 13 lower extreme move down, make fixture block 13 synchronous move down, make movable block 11 lose the support, make movable block 11 no longer the joint with draw-in groove 12, driven plate 7 resets under the effect of spring I8 of driven shaft 6 one side, makes driven plate 7 move to the right side, makes the joint disconnection of driven plate 7 and driving plate 5, makes driven shaft 6 stall.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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 utility model provides a latch device of jaw formula electromagnetic clutch, includes casing (1), its characterized in that: the improved motor is characterized in that one end of an inner cavity of the casing (1) is movably connected with the driving shaft (2), an inner cavity of the casing (1) is fixedly connected with a magnetic yoke (3) movably connected with the outer surface of the driving shaft (2), the middle part of the inner cavity of the magnetic yoke (3) is fixedly provided with a coil I (4), one end of the driving shaft (2) is fixedly connected with a driving disc (5) positioned at one end of the middle part of the inner cavity of the casing (1), the other end of the inner cavity of the casing (1) is movably connected with a driven shaft (6), one end of the driven shaft (6) positioned at the inner cavity of the casing (1) is fixedly connected with a spring I (8), one end of the spring I (8) is fixedly connected with a driven disc (7), one end of the driven disc (7) is movably sleeved with one end of the driven shaft (6) through a guide rod, the inner cavity of the driven disc (7), driven plate (7) are located the one end swing joint in casing (1) inner chamber middle part and have fixture block (13), there is the bottom plate lower extreme of fixture block (13) through spring coupling, and the activity direction of fixture block (13) is perpendicular with the opening direction in activity chamber (10), the inner chamber swing joint of driven plate (7) one end has backup pad (14) that is located fixture block (13) below, the inner chamber swing joint of spring II (15) and driven plate (7) is passed through to the one end of backup pad (14), middle part swing joint that driving plate (5) are located casing (1) inner chamber middle part one end has magnetic path (16), and the magnetic pole in magnetic path (16) inboard is the same with the magnetic pole in coil I (4) outside.

2. The clamping device of a jaw electromagnetic clutch according to claim 1, characterized in that: the inner chamber activity in activity chamber (10) has cup jointed movable block (11), and movable block (11) are "T" font, draw-in groove (12) have been seted up to the one end that driven plate (7) are located casing (1) inner chamber middle part, draw-in groove (12) are located the one end in activity chamber (10) top, and draw-in groove (12) opening shape is the same with the vertical end shape of movable block (11).

3. The clamping device of a jaw electromagnetic clutch according to claim 2, characterized in that: the shape of the upper end of the movable block (11) is isosceles trapezoid, and the diameter value of the opening of the upper end of the movable cavity (10) is the same as the length of the bottom side of the isosceles trapezoid.