CN112112907A

CN112112907A - Magnetic powder overheating separation mechanism of magnetic powder clutch

Info

Publication number: CN112112907A
Application number: CN202010965030.1A
Authority: CN
Inventors: 严尔权
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-15
Filing date: 2020-09-15
Publication date: 2020-12-22

Abstract

The invention relates to the technical field of mechanical equipment and discloses a magnetic powder overheating separation mechanism of a magnetic powder clutch. According to the invention, by additionally arranging the magnetic powder overheating separation mechanism, when the magnetic powder clutch works rapidly, the sealing block moves outwards under the action of centrifugal force, and meanwhile, the movable block is pushed into the air pressure cavity, when the temperature of equipment is higher than the normal working temperature due to abnormality, compressed air in the air pressure cavity pushes the push plate outwards under the action of thermal expansion, and meanwhile, the sealing plate moves towards one side, so that the separation hole is aligned with the round hole formed in the sealing block, the magnetic powder falls to the outermost end of the separation groove along the separation groove under the action of centrifugal force, and thus, a magnetic field generated by the magnetic powder is rapidly weakened under the action of vertical separation, and the temperature of the inner cavity of the clutch is not increased any more.

Description

Magnetic powder overheating separation mechanism of magnetic powder clutch

Technical Field

The invention relates to the technical field of mechanical equipment, in particular to a magnetic powder overheating separation mechanism of a magnetic powder clutch.

Background

The clutch is similar to a switch, has the function of engaging or disengaging power transmission, can temporarily separate a driving part from a driven part of the clutch mechanism, can gradually engage, and is also likely to relatively rotate in the transmission process.

The magnetic powder clutch is formed by combining a transmission unit and a driven unit. Space between two sets of units, it has granular magnetic, when magnetic coil is on-conductive, the torque can not pass to the driven plate from the transmission shaft, but if with coil electromagnetism circular telegram, just attract the magnetic to produce the sclerosis phenomenon because of the effect of magnetic force, make the transmission shaft can drive the driven plate and rotate, nevertheless because magnetic particle clutch is when transmission shaft and driven plate rotational speed difference are great, inside can be because doing cutting magnetic induction linear motion of clutch, lead to clutch inner chamber rapid heating up, when the normal operating temperature of temperature exceedes magnetic particle clutch, can make the magnetic demagnetization, influence magnetic particle clutch's working life, and magnetic particle clutch is after long-time the use, the problem of inside magnetic leakage can appear, lead to the inside magnetic chain intensity that forms of magnetic particle clutch weakens, lead to clutch work efficiency to reduce, make the required energy consumption of work of clutch increase.

Disclosure of Invention

Aiming at the defects of the prior magnetic powder clutch in the background technology in the using process, the invention provides a magnetic powder overheating separation mechanism of the magnetic powder clutch, which has the advantages of overheating separation and magnetic powder polymerization and solves the problems in the background technology.

The invention provides the following technical scheme: the utility model provides an overheated separating mechanism of magnetic powder of magnetic particle clutch, includes the shell, the one end swing joint of shell inner chamber has the driven plate, the other end swing joint of shell inner chamber has the driving plate, shell inner chamber fixedly connected with is located the coil of driven plate one side, shell inner chamber fixedly connected with is located the yoke of coil surface, the middle part fixedly connected with of shell is located the bearing at driven plate and driving plate both ends, the magnetic powder has been placed in the cavity that driven plate and driving plate formed through the opposition, driven plate and driving plate have a mouth piece through the upper and lower both sides movable mounting that the cavity was formed in the opposition, one side swing joint of mouth piece upper surface has the movable block, one side of movable block is provided with the atmospheric pressure chamber that is located the driving plate inner chamber, the middle part swing joint of mouth piece has the sealing plate, driven plate and driving plate are offered the separating tank that is located directly over the middle part of the mouth piece through the upper, the middle part of the sealing block is provided with a round hole with the same aperture as the separation groove, and the middle part of one end of the sealing plate is provided with a separation hole with the same aperture as the separation groove.

Preferably, the upper end fixedly connected with spring of separation tank other end inner chamber, the other end fixedly connected with kicking block of spring, the middle part swing joint of initiative dish has the push pedal, and the push pedal runs through the left and right sides both ends of movable block.

Preferably, the shape of the sealing block and the shape of the movable block are both right trapezoid, and the contact surfaces of the sealing block and the movable block are inclined planes with the same angle.

The invention has the following beneficial effects:

1. according to the invention, by additionally arranging the magnetic powder overheating separation mechanism, when the magnetic powder clutch works rapidly, the sealing block moves outwards under the action of centrifugal force, and meanwhile, the movable block is pushed into the air pressure cavity, when the temperature of equipment is higher than the normal working temperature due to abnormality, compressed air in the air pressure cavity pushes the push plate outwards under the action of thermal expansion, and meanwhile, the sealing plate moves towards one side, so that the separation hole is aligned with the round hole formed in the sealing block, the magnetic powder falls to the outermost end of the separation groove along the separation groove under the action of centrifugal force, and thus, a magnetic field generated by the magnetic powder is rapidly weakened under the action of vertical separation, and the temperature of the inner cavity of the clutch is not increased any more.

2. According to the invention, through the magnetic powder gathering mechanism, after the magnetic powder clutch is used for a long time, magnetic powder generated in the inner cavity of the clutch inevitably leaks, so that the amount of the magnetic powder in the inner cavity of the clutch is reduced, the driven disc and the driving disc cannot be guaranteed to rotate at a relatively close rotating speed when the clutch normally works, the ejector block compresses the spring to move outwards under the action of centrifugal force, and after the clutch stops running, the spring resets to enable the ejector block to move inwards, meanwhile, the sealing block moves towards the middle part under the action of gravity and gas pressure by pushing gas in the separation groove, and meanwhile, the magnetic powder is gathered towards the middle part, so that when the magnetic powder clutch is used next time, the magnetic powder can be gathered at a relatively low-speed starting stage to provide a relatively large torque.

Drawings

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

FIG. 2 is a schematic view of the driving disk structure of the present invention;

FIG. 3 is a schematic diagram of the configuration of the superheat separation stage of the invention;

FIG. 4 is an enlarged view of the structure at A in FIG. 1 according to the present invention;

FIG. 5 is an enlarged view of the structure at B in FIG. 3 according to the present invention.

In the figure: 1. a housing; 2. a driven plate; 3. a magnetic yoke; 4. a coil; 5. a driving disk; 6. magnetic powder; 7. a sealing block; 8. a movable block; 9. a pneumatic chamber; 10. pushing the plate; 11. a sealing plate; 12. a separation tank; 13. a spring; 14. a top block; 15. a separation well; 16. and a bearing.

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. 1-5, a magnetic powder overheating separation mechanism of a magnetic powder clutch comprises a housing 1, one end of an inner cavity of the housing 1 is movably connected with a driven disc 2, the other end of the inner cavity of the housing 1 is movably connected with a driving disc 5, the inner cavity of the housing 1 is fixedly connected with a coil 4 positioned at one side of the driven disc 2, the inner cavity of the housing 1 is fixedly connected with a magnetic yoke 3 positioned at the outer surface of the coil 4, the middle part of the housing 1 is fixedly connected with bearings 16 positioned at two ends of the driven disc 2 and the driving disc 5, magnetic powder 6 is placed in a cavity formed by the driven disc 2 and the driving disc 5 in an opposite manner, sealing blocks 7 are movably installed at the upper side and the lower side of the cavity formed by the driven disc 2 and the driving disc 5 in an opposite manner, a movable block 8 is movably connected at one side of the upper surface of the sealing block 7, one side, the sealing block 7 can move outwards through centrifugal force, the movable block 8 moves towards the air pressure cavity 9 at the same time, so that air in the air pressure cavity 9 is compressed, the middle part of the sealing block 7 is movably connected with a sealing plate 11, the upper side and the lower side of a cavity formed by the driven disc 2 and the driving disc 5 in an opposite mode are provided with a separating groove 12 positioned right above the middle part of the sealing block 7, the middle part of the sealing block 7 is provided with a round hole with the same aperture as the separating groove 12, the middle part of one end of the sealing plate 11 is provided with a separating hole 15 with the same aperture as the separating groove 12, so that when the rotating speed difference between the driving disc 5 and the driven disc 2 is large or the clutch service time is too long due to abnormal conditions in the clutch, the temperature of the compressed air in the air pressure cavity 9 is increased, the volume of the compressed air is rapidly expanded, the push plate 10 is pushed to one side, and the sealing, make the opening of disengaging hole 15 and separating tank 12 coincide gradually, make the magnetic 6 of equipment inner chamber move to separating tank 12 gradually under the effect of centrifugal force, and finally move to the other end of separating tank 12, make the magnetic 6 of equipment inner chamber divide into several groups, and make coil 4 weaken to the magnetic force of magnetic 6, thereby make equipment inner chamber temperature stop rising, and after the abnormal condition appears in equipment, equipment can make the magnetic connection disconnection between driving disk 5 and the driven disk 2, guarantee driven disk 2 is not damaged.

Wherein, the upper end of the inner cavity at the other end of the separation groove 12 is fixedly connected with a spring 13, the other end of the spring 13 is fixedly connected with a top block 14, the middle part of the driving disc 5 is movably connected with a push plate 10, and the push plate 10 penetrates through the left end and the right end of the movable block 8, so that when the equipment normally works, the top block 14 can compress the spring 13 to move outwards under the action of centrifugal force, and after the rotating speed of the driving disc 5 of the equipment is reduced or stops rotating, the top block 14 can move inwards through the automatic reset of the spring 13, so that the gas in the separation groove 12 moves towards the cavity formed by the driving disc 5 and the driven disc 2 in an opposite way under the compression of the top block 14, and the sealing block 7 moves inwards under the action of gas pushing, so that the magnetic powder 6 is gathered inwards under the action of the pressure of the sealing block 7, and after the magnetic powder 6 in the inner cavity leaks, still can gather magnetic 6 to the middle part through equipment is automatic for equipment can ensure to have great moment of torsion transmission when initial start.

Wherein, 6 separation of magnetic powder are being accomplished to overheated separating mechanism for the guarantee magnetic powder, and after the shutdown device operation, enable magnetic powder 6 automatic re-setting to the cavity that driving disk 5 and driven disk 2 opposition formed, make kicking block 14 can compress magnetic powder 6 downwards automatically when reseing, thereby make magnetic powder 6 rotate at driving disk 5 and reduce the back, can pass through separating groove 12 automation or to the cavity in, and block sealing block 7 through push pedal 10, make sealing block 7 can not appear longitudinal movement, guarantee magnetic powder 6 can not block between separating groove 12 and sealing plate 11.

Wherein, the shape of sealing piece 7 and movable block 8 is right trapezoid, and the contact surface of the two is the inclined plane that the angle is the same, make when equipment normally rotates, seal piece 7 and move to the outside under the effect of centrifugal force, can pass through the inclined plane of sealing piece 7 with the contact of movable block 8, make movable block 8 when sealing piece 7 moves to the outside, receive the power of promoting it in to atmospheric pressure chamber 9, guarantee movable block 8 can be when equipment rotates at a high speed, compress the gas in the atmospheric pressure chamber 9.

The using method of the invention is as follows:

when the device is in normal use: starting the clutch, electrifying the coil 4, then enabling the driving disc 5 to rotate, electrifying the coil 4 to enable the magnetic powder 6 in the inner cavity of the clutch to form a magnetic linkage, thus enabling the driving disc 5 and the driven disc 2 to form a whole, enabling the driving disc 5 to drive the driven disc 2 to rotate, enabling the sealing block 7 to move outwards under the action of centrifugal force when the driving disc 5 rotates at a high speed, enabling the movable block 8 to move towards the inner cavity of the air pressure cavity 9 through an inclined plane which is the same as that of the movable block 8 when the sealing block moves to the outermost side of a cavity formed by the driven disc 2 and the driving disc 5 in an opposite mode, enabling the air in the inner cavity of the air pressure cavity 9 to be compressed, and enabling the top block 14 to press the compression spring 13 to move outwards;

when the device overheats: when the temperature of the inner cavity of the clutch is too high due to the abnormal state, the rotating speed difference between the driven disc 2 and the driving disc 5 is large or the service time of the device is too long, the compressed gas in the air pressure cavity 9 expands outwards under the action of thermal expansion, so that the movable block 8 moves outwards and pushes the sealing plate 11 to move, the separation hole 15 moves towards one side, the separation groove 12 is opened slowly, the magnetic powder 6 moves outwards through the separation groove 12 under the action of centrifugal force and moves into the cavity at the outermost side of the separation groove 12, the quantity of the magnetic powder 6 in the middle of the clutch is reduced, the magnetic induction line generated by the magnetic powder 6 is weakened, the temperature in the device is not increased any more, after the device is stopped, the rotating speed of the driving disc 5 is reduced slowly, the spring 13 automatically resets, so that the magnetic powder 6 is pushed back into the cavity formed by the driven disc 2 and the driving disc 5 along the separation groove 12, after the temperature of the inner cavity of the clutch is reduced, the push plate 10 is sucked back into the movable block 8 under the action of negative pressure in the air pressure cavity 9, so that the seal block 7 is separated from the movable block 8, and the seal block 7 falls back to the upper surface of the magnetic powder 6;

when the magnetic powder 6 leaks: because the clutch is used for a long time, the amount of the magnetic powder 6 in the clutch is leaked, when the clutch is used, the top block 14 compresses the spring 13 to move outwards under the action of centrifugal force, and after the clutch stops working, the spring 13 automatically resets to enable the top block 14 to move downwards and enable the gas in the separation groove 12 to move towards a cavity formed by the opposite arrangement of the driven plate 2 and the driving plate 5, so that the sealing plate 11 moves downwards and enables the magnetic powder 6 in the cavity formed by the opposite arrangement of the driven plate 2 and the driving plate 5 to be polymerized in the middle of the clutch.

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 an overheated separating mechanism of magnetic powder clutch, includes shell (1), the one end swing joint of shell (1) inner chamber has driven plate (2), the other end swing joint of shell (1) inner chamber has driving plate (5), shell (1) inner chamber fixedly connected with is located coil (4) of driven plate (2) one side, shell (1) inner chamber fixedly connected with is located yoke (3) of coil (4) surface, the middle part fixedly connected with of shell (1) is located bearing (16) at driven plate (2) and driving plate (5) both ends, its characterized in that: magnetic powder (6) is placed in a cavity formed by the driven disc (2) and the driving disc (5) through opposition, the driven disc (2) and the driving disc (5) are movably provided with a sealing block (7) through the upper side and the lower side which are opposite to form a cavity, one side of the upper surface of the sealing block (7) is movably connected with a movable block (8), one side of the movable block (8) is provided with an air pressure cavity (9) positioned in the inner cavity of the driving disc (5), the middle part of the sealing block (7) is movably connected with a sealing plate (11), the upper side and the lower side of the cavity formed by the driven disc (2) and the driving disc (5) in an opposite way are provided with separating grooves (12) which are positioned right above the middle part of the sealing block (7), the middle part of the sealing block (7) is provided with a round hole with the same aperture as the separating groove (12), and a separation hole (15) with the same aperture as that of the separation groove (12) is formed in the middle of one end of the sealing plate (11).

2. The magnetic powder overheat separating mechanism of a magnetic powder clutch according to claim 1, wherein: the upper end fixedly connected with spring (13) of separating tank (12) other end inner chamber, the other end fixedly connected with kicking block (14) of spring (13), the middle part swing joint of initiative dish (5) has push pedal (10), and push pedal (10) run through the both ends about movable block (8).

3. The magnetic powder overheat separating mechanism of a magnetic powder clutch according to claim 1, wherein: the sealing block (7) and the movable block (8) are both in a right trapezoid shape, and the contact surfaces of the sealing block and the movable block are inclined planes with the same angle.