Double-shaft magnetic powder clutch

Abstract

The utility model discloses a double-shaft magnetic powder clutch, which relates to the technical field of double-shaft magnetic powder clutches and comprises a coil seat, fixing covers symmetrically arranged on two sides of the coil seat, a first rotating shaft and a second rotating shaft, the rotating drum and the drum cover are arranged between the interior of the coil holder and the fixed cover, the rotor is arranged in the rotating drum and the drum cover, an electromagnetic groove for fixing a coil is formed in the coil holder, refrigeration grooves are uniformly formed around the electromagnetic groove, refrigeration holes communicated with the refrigeration grooves are formed in the surface of the coil holder, a groove is formed in the surface of the rotating drum, and the rotor is arranged in the groove. And a reinforcing sheet is arranged in the groove. The magnetic powder clutch is reasonable in design structure, refrigerant fluid can be added into the refrigeration groove in the coil base through the refrigeration hole, the refrigerant fluid circularly flows in the coil base, the coil in the electromagnetic groove is cooled through the refrigerant fluid, high temperature generated when the magnetic powder clutch is used at a high speed is avoided, and therefore the purposes of long-time use, low cost and the like are achieved. And the shutdown cooling frequency is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of double-shaft magnetic powder clutches, and specifically relates to a double-shaft magnetic powder clutch. Background Art

[0002] The double-shaft magnetic powder clutch is a clutch device that works based on the electromagnetic principle and uses magnetic powder to transmit torque. It has the advantages of fast response speed, no pollution, no noise, no impact vibration, energy saving, etc., and is widely used in fields such as printing, packaging, papermaking, wire and cable, and textile.

[0003] A prior art double-shaft magnetic powder clutch with the publication number of CN220791847U discloses a left coil seat, a right coil seat, a left front cover, a left front cover steel ring, a right front cover, a right front cover steel ring, a copper coil, a rotor, a first bearing, a second bearing, a first circlip, a first key bar, a first threaded hole, a first bearing spacer, a drum retaining ring, a drum, a tension groove, a magnetic conduction groove, a wool felt seal ring, a third bearing, a fourth bearing, a second circlip, a second key bar, a second threaded hole, a second bearing spacer, a heat sink, a heat sink retaining ring, a rotor retaining ring, a clearance groove, and a magnetic coupling space. The left side of the left coil seat is provided with a rabbet position, and the right side is provided with a groove and a rabbet position. The right side of the right coil seat is provided with a rabbet position, and the left side is provided with a groove and a rabbet position. The circumferential surface of the right coil seat is provided with an internal threaded hole for air injection, and the other circumferential surface is provided with an air discharge hole;

[0004] The copper coil is placed in the right groove of the left coil seat and the left groove of the right coil seat. The circumferential outer ring of the left front cover steel ring is provided with a number of semi-circular holes. The left front cover and the left front cover steel ring are integrally formed by fusion bonding during the process of aluminum alloy die-casting or sand casting to form a left front cover structure. The circumferential outer ring of the right front cover steel ring is provided with a number of semi-circular holes. The right front cover and the right front cover steel ring are integrally formed by fusion bonding during the process of aluminum alloy die-casting or sand casting to form a right front cover structure.

[0005] By designing the front cover steel ring of the double-shaft magnetic powder clutch to be made of steel, the circumferential outer ring of the front cover steel ring is provided with a number of semi-circular holes. The front cover and the front cover steel ring are integrally formed by fusion bonding during the process of aluminum alloy die-casting or sand casting to form the front cover. The bearing position of the front cover steel ring has a small thermal deformation amount and is more stable during high-temperature and high-speed operation. During subsequent maintenance and replacement of bearings, the bearing position is not easily worn, is more durable, a bearing spacer is provided between the bearings, which can improve the bearing capacity and service life of the bearings, effectively reduce bearing failures, and a clearance groove is provided on the circumferential side of the right step of the rotor. The clearance groove can block part of the magnetic powder, and the clearance groove and the wool felt seal ring cooperate with each other to effectively block the external leakage of magnetic powder.

[0006] Although the above-mentioned technology solves the problems of the overall clutch being heavy, not easily worn, and preventing magnetic powder leakage, it does not solve the problems of increasing the rotational speed and continuously cooling during high-speed operation. Therefore, we provide a dual-axis magnetic powder clutch to solve the above problems. Summary of the Invention

[0007] The purpose of the present invention is to make up for the deficiencies of the prior art and provide a dual-axis magnetic powder clutch.

[0008] To achieve the above purpose, the present invention provides the following technical solution: A dual-axis magnetic powder clutch includes a coil seat, fixed covers symmetrically arranged on both sides of the coil seat, a first rotating shaft and a second rotating shaft passing through the fixed covers, a rotating cylinder and a cylinder cover arranged between the inside of the coil seat and the fixed covers, and a rotor arranged inside the rotating cylinder and the cylinder cover. An electromagnetic slot for fixing the coil is provided in the coil seat, cooling slots are evenly arranged around the electromagnetic slot, cooling holes communicating with the cooling slots are provided on the surface of the coil seat, grooves are provided on the surface of the rotating cylinder, and reinforcing sheets are arranged inside the grooves.

[0009] Further, movable keys are arranged on the opposite end surfaces of the first rotating shaft and the second rotating shaft, and the bottom ends of the movable keys are fixedly connected to the first rotating shaft and the second rotating shaft through springs.

[0010] Further, the first rotating shaft passes through the fixed cover and the cylinder cover and is fixedly connected to the rotor, and the rotor is in contact with the magnetic powder placed inside the rotating cylinder and the cylinder cover.

[0011] Further, a placement groove is provided in the fixed cover, bearings are arranged inside the placement groove, and the bearings are respectively sleeved on the surfaces of the first rotating shaft and the second rotating shaft.

[0012] Further, a connecting block is arranged on the side surface of the coil seat, protrusions are evenly arranged on the opposite surface of the fixed cover, and the fixed cover is snap-connected to the connecting block on the side surface of the coil seat through the protrusions. A limiting groove is provided on the surface of the fixed cover, a bolt is arranged in the limiting groove, and the fixed cover, the connecting block and the coil seat are connected through corresponding threaded holes by the bolt.

[0013] Further, heat dissipation holes are evenly provided on the surface of the fixed cover, reinforcing ribs are evenly arranged on the surface of the fixed cover and in the heat dissipation holes, and connecting holes are evenly provided on the surface of the fixed cover.

[0014] Further, a wire hole is provided on the surface of the coil seat, and the wire hole communicates with the electromagnetic slot. Positioning holes are provided at the opposite ends of the first rotating shaft and the second rotating shaft.

[0015] Further, the rotating cylinder and the cylinder cover are connected by bolts. Advantageous Effects

[0016] Compared with the prior art, the biaxial magnetic powder clutch has the following beneficial effects:

[0017] (1) In the present utility model, a refrigerant is added into the refrigeration tank inside the coil seat through the refrigeration holes, and the refrigerant circulates inside the coil seat. The refrigerant is used to cool the coils in the electromagnetic tank, avoiding the generation of high temperature when the magnetic powder clutch is used at high speed, and reducing the damage caused by high temperature to the magnetic powder clutch, so as to achieve long-term use and reduce the number of times of shutdown for cooling.

[0018] (2) In the present utility model, by arranging reinforcing sheets in the grooves, the rotational speed of the rotor can be increased. For example, when the reinforcing sheets are made of aluminum, the effect of accelerating the secondary coil can be achieved. At the same time, the cost of aluminum is relatively low, and the rotational speed can be increased while reducing the cost. When copper is used, the accelerating effect is more obvious, the magnetic field will also increase, making the rotor stronger and more responsive, with high sensitivity and higher rotational speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0020] Figure 2 is a three-dimensional structural schematic diagram of the fixed cover in the present utility model;

[0021] Figure 3 is a three-dimensional structural schematic diagram of the coil seat in the present utility model;

[0022] Figure 4 In the present utility model Figure 3 is a partial sectional structural schematic diagram;

[0023] Figure 5 is a three-dimensional structural schematic diagram of the rotating cylinder and the cylinder cover in the present utility model;

[0024] Figure 6 is a front sectional structural schematic diagram of the present utility model.

[0025] In the figure: 1. Coil seat; 2. First rotating shaft; 3. Movable key; 4. Refrigeration hole; 5. Fixed cover; 6. Limit groove; 7. Bolt; 8. Second rotating shaft; 9. Positioning hole; 10. Bearing; 11. Wire hole; 12. Heat dissipation hole; 13. Connection hole; 14. Placing groove; 15. Electromagnetic tank; 16. Connection block; 17. Refrigeration tank; 18. Rotating cylinder; 19. Groove; 20. Reinforcing sheet; 21. Cylinder cover; 22. Rotor; 23. Spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0027] As Figures 1-6 shown, the present utility model provides a technical solution: a double-shaft magnetic powder clutch, including a coil seat 1, fixed covers 5 symmetrically arranged on both sides of the coil seat 1, a first rotating shaft 2 and a second rotating shaft 8 passing through the fixed covers 5, a rotating cylinder 18 and a cylinder cover 21 arranged between the inside of the coil seat 1 and the fixed covers 5, and a rotor 22 arranged inside the rotating cylinder 18 and the cylinder cover 21. An electromagnetic groove 15 for fixing the coil is provided in the coil seat 1. Refrigerating grooves 17 are uniformly arranged around the electromagnetic groove 15. Refrigerating holes 4 communicating with the refrigerating grooves 17 are arranged on the surface of the coil seat 1. Refrigerating liquid is added into the refrigerating grooves 17 inside the coil seat 1 through the refrigerating holes 4. The refrigerating liquid circulates inside the coil seat 1, and the coil in the electromagnetic groove 15 is cooled by the refrigerating liquid, so as to avoid the generation of high temperature when the magnetic powder clutch is used at high speed, and reduce the damage caused by high temperature to the magnetic powder clutch, thereby achieving long-term use and reducing the number of times of shutdown for temperature reduction. Grooves 19 are provided on the surface of the rotating cylinder 18, and reinforcing sheets 20 are arranged inside the grooves 19. By arranging the reinforcing sheets 20 in the grooves 19, the rotation speed of the rotor 22 can be increased. The reinforcing sheets 20 are made of a metal material attached to the inner surface of the grooves 19 to increase the magnetic field. For example, when the reinforcing sheets 20 are made of aluminum, the effect of secondary coil acceleration can be achieved. At the same time, the cost of aluminum is relatively low, and the rotation speed can be increased while reducing the cost. When copper is used, the acceleration effect is more obvious, the magnetic field will also increase, the rotor 22 will have greater strength and faster response, high sensitivity, and higher rotation speed.

[0028] Specifically, as Figure 5 and 6 shown, movable keys 3 are arranged on the opposite end surfaces of the first rotating shaft 2 and the second rotating shaft 8, and the bottom ends of the movable keys 3 are fixedly connected to the first rotating shaft 2 and the second rotating shaft 8 through springs 23. The arrangement of the movable keys 3 can better connect the first rotating shaft 2 and the second rotating shaft 8 with the outside. At the same time, by connecting with springs 23 at the bottom, it can be connected and used by pressing the movable keys 3, and the loss of the movable keys 3 can be avoided.

[0029] Specifically, as Figure 6As shown, the first rotating shaft 2 passes through the fixed cover 5 and the cylinder cover 21 and is fixedly connected to the rotor 22, and the rotor 22 contacts the magnetic powder placed inside the rotating cylinder 18 and the cylinder cover 21. The rotating cylinder 18 and the cylinder cover 21 are connected by bolts 7. A placement groove 14 is formed in the fixed cover 5, and a bearing 10 is arranged inside the placement groove 14. The bearing 10 is sleeved on the surfaces of the first rotating shaft 2 and the second rotating shaft 8 respectively. The rotating cylinder 18 and the cylinder cover 21 connected by screw threads can better replace the magnetic powder inside, and the replacement will be relatively simple.

[0030] Specifically, as Figures 2-4 shown, a connecting block 16 is arranged on the side surface of the coil seat 1. Protrusions are evenly arranged on the opposite surfaces of the fixed cover 5, and the fixed cover 5 is clamped on the connecting block 16 on the side surface of the coil seat 1 through the protrusions. A limiting groove 6 is arranged on the surface of the fixed cover 5, and a bolt 7 is arranged in the limiting groove 6. The bolt 7 connects the fixed cover 5, the connecting block 16 and the coil seat 1 through corresponding threaded holes. By arranging protrusions on the opposite surfaces of the fixed cover 5 and a connecting block 16 on the surface of the coil seat 1, the limiting operation can be realized, and at the same time, the sealing operation can be realized. During installation, it can also prevent the fixed cover 5 from excessively squeezing the rotating cylinder 18 and the cylinder cover 21, avoiding damage.

[0031] Specifically, as Figures 2-4 shown, heat dissipation holes 12 are evenly formed on the surface of the fixed cover 5, and reinforcing ribs are evenly arranged on the surface of the fixed cover 5 and in the heat dissipation holes 12. Connecting holes 13 are evenly formed on the surface of the fixed cover 5, a wire hole 11 is formed on the surface of the coil seat 1, and the wire hole 11 communicates with the electromagnetic groove 15. Positioning holes 9 are formed at the relative ends of the first rotating shaft 2 and the second rotating shaft 8. The heat dissipation holes 12 evenly arranged on the surface of the fixed cover 5 can dissipate heat from the side surfaces of the rotating cylinder 18 and the cylinder cover 21, achieving the effect of multiple temperature drops. At the same time, multiple reinforcing ribs can reduce the thickness while increasing the hardness of the fixed cover 5, avoiding the overall clutch from being too heavy.

[0032] It should be noted that in this text, the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model; the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In addition, unless otherwise clearly specified and defined, the terms "fixedly installed", "installed", "connected", "coupled" should be understood in a broad sense. For example, "installed" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a mechanical connection or an electrical connection; "coupled" can be a direct connection, an indirect connection through an intermediate medium, or an internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A dual-axis magnetic powder clutch, comprising a coil seat (1), a fixed cover (5) symmetrically arranged on both sides of the coil seat (1), a first rotating shaft (2) and a second rotating shaft (8) passing through the fixed cover (5), a rotating drum (18) and a drum cover (21) arranged between the inside of the coil seat (1) and the fixed cover (5), and a rotor (22) arranged inside the rotating drum (18) and the drum cover (21), characterized in that: The coil seat (1) is provided with an electromagnetic slot (15) for fixing the coil, and refrigeration slots (17) are evenly arranged around the electromagnetic slot (15). The surface of the coil seat (1) is provided with a refrigeration hole (4) connected to the refrigeration slot (17), and the surface of the rotating drum (18) is provided with a groove (19), and a reinforcing sheet (20) is arranged inside the groove (19).

2. The dual-axis magnetic powder clutch according to claim 1, characterized in that: Movable keys (3) are provided on the opposite end surfaces of the first rotating shaft (2) and the second rotating shaft (8), and the bottom end of the movable key (3) is fixedly connected to the first rotating shaft (2) and the second rotating shaft (8) via a spring (23).

3. The dual-axis magnetic powder clutch according to claim 2 is characterized in that: The first rotating shaft (2) passes through the fixed cover (5) and the cylinder cover (21) and is fixedly connected to the rotor (22), and the rotor (22) is in contact with the magnetic powder placed inside the rotating cylinder (18) and the cylinder cover (21).

4. The dual-axis magnetic powder clutch according to claim 3 is characterized in that: The fixing cover (5) is provided with a placement groove (14), a bearing (10) is arranged inside the placement groove (14), and the bearing (10) is respectively sleeved on the surface of the first rotating shaft (2) and the second rotating shaft (8).

5. The dual-axis magnetic powder clutch according to claim 4 is characterized in that: A connecting block (16) is arranged on the side of the coil seat (1), and protrusions are evenly arranged on the opposite surface of the fixing cover (5), and the fixing cover (5) is clamped on the connecting block (16) on the side of the coil seat (1) through the protrusions. A limiting groove (6) is arranged on the surface of the fixing cover (5), and a bolt (7) is arranged in the limiting groove (6), and the bolt (7) connects the fixing cover (5), the connecting block (16) and the coil seat (1) through corresponding threaded holes.

6. The dual-axis magnetic powder clutch according to claim 5, characterized in that: The surface of the fixed cover (5) is evenly provided with heat dissipation holes (12), the surface of the fixed cover (5) and the heat dissipation holes (12) are evenly provided with reinforcing ribs, and the surface of the fixed cover (5) is evenly provided with connection holes (13).

7. The dual-axis magnetic powder clutch according to claim 6, characterized in that: A wire hole (11) is provided on the surface of the coil seat (1), and the wire hole (11) is connected to the electromagnetic slot (15), and positioning holes (9) are provided at opposite ends of the first rotating shaft (2) and the second rotating shaft (8).

8. The dual-axis magnetic powder clutch according to claim 5, characterized in that: The rotating drum (18) and the drum cover (21) are connected via bolts (7).

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