Ventilation type coupler with clamping blades

Abstract

The utility model discloses a ventilation type coupler with clamping blades. The ventilation type coupler comprises a coupler body and a prime motor flywheel. The coupler body comprises a hub, inner iron pieces, blades, an elastic body and a flange plate which are sequentially arranged and installed from inside to outside, bolts are arranged between the flange plate and a prime mover flywheel, screws are arranged between the hub and the inner iron pieces, kidney-shaped ventilation holes are formed in the middles of the inner iron pieces, and the two inner iron pieces are oppositely arranged. A plurality of blades are clamped in the middle; a flow guide structure is arranged on the flange plate close to the prime mover flywheel in the circumferential direction. After the prime mover works, the coupler is driven to rotate, external air is axially sucked in by the blades arranged in the kidney-shaped ventilation holes of the inner iron piece, flows through the area between the prime mover flywheel and the inner iron piece and is thrown out in the radial direction by the flow guide structure of the flange plate, and air flow of the prime mover flywheel and the inner cavity of the coupler is enhanced. Convection heat exchange between the elastic body and air is further enhanced, and the purpose of enhancing the heat dissipation effect is achieved.

Description

Technical Field

[0001] The utility model discloses a ventilation type coupling, belongs to the technical field of mechanical transmission, and specifically relates to a ventilation type coupling with clamping blades. Background Art

[0002] A coupling is a device that connects two shafts or a shaft and a rotating part, and rotates together during the transmission of motion and power. In the shaft system connected by a high-elastic coupling, the prime mover side is generally accompanied by more severe torsional vibration. During the operation of the shaft system, the elastic body (made of rubber) in the coupling absorbs most of the torsional vibration on the prime mover side by relying on its own flexibility, so as to isolate the torsional vibration from being transmitted to the shaft system on the driven side, thereby ensuring the stability, reliability and safety of the shaft system.

[0003] In the process of the elastic body absorbing torsional vibration, the mechanical energy of the torsional vibration in the shaft system will be continuously converted into heat energy. The continuously generated heat energy causes the temperature of the elastic body and its surroundings to rise. When the temperature rises to a certain level, it will reach thermal equilibrium with the surrounding environment. After reaching thermal equilibrium, the temperature is basically stable. This value is the thermal equilibrium temperature of the elastic body. The elastic body has strict requirements on temperature. Its temperature must not exceed a certain upper limit during operation, otherwise the strength and life of the elastic body will be sharply reduced.

[0004] Although the existing coupling is also designed with ventilation holes, the arrangement is rather random, and it is difficult for air to flow into the coupling to remove heat. There are also related patents that set blades between the elastic bodies for forced ventilation, but they focus on removing the heat in the gaps between the elastic bodies, and air circulation is still not possible in the area between the prime mover flywheel and the elastic body. Utility Model Content

[0005] Purpose of the utility model: to provide a ventilation coupling with clamping blades to solve the problem of poor air flow in the space between the coupling elastomer and the prime mover flywheel and poor overall heat dissipation effect proposed in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a ventilation coupling with clamping blades, comprising a coupling body and a prime mover flywheel, the prime mover flywheel drives the coupling body to rotate, the coupling body comprises a hub, an inner iron piece, a blade, an elastomer and a flange, the hub, the inner iron piece, the elastomer and the flange are arranged in sequence from the inside to the outside, a waist-shaped ventilation hole is arranged in the middle of the inner iron piece, a bolt is arranged between the flange and the prime mover flywheel, the bolt fixes the flange and the prime mover flywheel, a screw is arranged between the hub and the inner iron piece, two inner iron pieces are arranged oppositely, blades are arranged in the middle along the circumferential direction, the screw passes through the inner iron piece, the blade and the hub to connect the three, and the blade is clamped by the two opposite inner iron pieces through the pre-tightening force of the screw. The flat surface part of the blade is clamped, the curved surface part is located in the ventilation hole of the inner iron piece, and the windward surface must be opposite to the prime mover flywheel. The flange is provided with a guide structure on the outer circumference near the prime mover flywheel end.

[0007] Preferably, the blades are distributed along the circumference of the inner iron piece, and the blades are divided into a plane part and a curved part, wherein the plane part is clamped by the inner iron piece, a through hole for screws to pass through is provided on the plane, and the curved part is located in the waist-shaped ventilation hole of the inner iron piece.

[0008] Preferably, the blades are evenly distributed in the circumferential direction of the inner iron member, the number of the blades corresponds to the number of the waist-shaped ventilation holes, and the windward side of the blade curved surface is opposite to the prime mover flywheel.

[0009] Preferably, the elastic body and the flange are meshed with each other through a toothed groove to facilitate the transmission of torque.

[0010] Preferably, the inner iron member and the elastomer are combined by a vulcanization process, and the elastomer is made of rubber.

[0011] Preferably, the blades are made by stamping metal sheets.

[0012] Preferably, the flat surface portion of the blade is clamped by the inner iron piece, and the curved surface portion is located exactly in the waist-shaped ventilation hole of the inner iron piece, and the number of the blades corresponds to the number of the waist-shaped ventilation holes.

[0013] Preferably, the flange is cast from an aluminum alloy, and the flow-guiding structure on the flange can also be cast in one step.

[0014] Preferably, the guide structure on the flange is arranged at the tooth top of the flange and is evenly distributed along the circumference, and the number is an approximate multiple of the number of flange teeth (for example, if the number of flange teeth is 24, the guide structure can be set to 2, 4, 6, 8, 12 or 24).

[0015] Preferably, when the flywheel of the prime mover rotates, the airflow flows in through the waist-shaped ventilation holes, flows through the blades, and flows out radially from the flange guide structure.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] Through the inner iron parts, blades, elastomers, and flange guide structures, air is forcibly sucked in axially through the waist-shaped ventilation holes of the inner iron parts by the blades, and the kinetic energy of the blades is transmitted to the air, thereby increasing the pressure and flow rate of the air between the coupling and the prime mover flywheel. Finally, the inflowing air is discharged through the guide structure of the flange, and this cycle is repeated, so that the air flows in the space between the coupling and the prime mover flywheel, thereby strengthening the convection heat exchange between the elastomer and the air, so as to achieve the purpose of enhancing the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the full cross-section structure of the coupling of the utility model;

[0019] Figure 2 It is a front structural schematic diagram of the coupling of the utility model;

[0020] Figure 3 This is a schematic diagram of the back structure of the coupling of the utility model;

[0021] Figure 4 This is a schematic diagram of the flange guide structure of the utility model;

[0022] Figure 5 This is an exploded schematic diagram of the installation of the coupling of the utility model;

[0023] Figure 6 This is a front view of a blade of the utility model;

[0024] Figure 7 It is a schematic top view of the blade of the utility model.

[0025] Figure numerals: 1, hub; 2, inner iron part; 3, blade; 4, elastomer; 5, flange; 2-1, waist-shaped ventilation hole; 5-1, guide structure; B1, screw; B2, bolt; 6, prime mover flywheel 6. DETAILED DESCRIPTION

[0026] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0029] Example

[0030] See also Figures 1 to 7 The utility model provides a technical solution: a ventilation coupling with clamping blades, including a coupling body and a prime mover flywheel 6, the coupling body including a hub 1, an inner iron piece 2, a blade 3, an elastic body 4 and a flange 5. The hub 1, the inner iron piece 2, the blade 3, the elastic body 4 and the flange 5 are arranged and installed in sequence from the inside to the outside, a bolt B2 is arranged between the flange 5 and the prime mover flywheel 6, the bolt B2 fixes the flange 5 and the prime mover flywheel 6, the prime mover flywheel 6 drives the coupling as a whole to rotate, a screw B1 is arranged between the hub 1 and the inner iron piece 2, a waist-shaped ventilation hole 2-1 is arranged in the middle of the inner iron piece 2, two inner iron pieces 2 are arranged oppositely, and the blade 3 is clamped in the middle, and a guide structure 5-1 is arranged on the outer circumference of the flange 5, when the prime mover flywheel 6 drives the coupling as a whole to rotate, air is forced to be sucked in axially by the blade 3 through the waist-shaped ventilation hole 2-1. The kinetic energy of the blades 3 is transferred to the air, increasing the pressure and flow rate of the air. The air flows into the space between the prime mover flywheel 6 and the coupling through the waist-shaped ventilation holes 2-1 of the inner iron part, and is finally thrown out radially through the guide structure of the flange 5. This cycle is repeated, increasing the air flow rate in the space formed by the prime mover flywheel 6 and the coupling, thereby strengthening the convective heat exchange between the elastomer and the air, so as to achieve the purpose of enhancing the heat dissipation effect.

[0031] In this embodiment, the elastic body 4 and the flange 5 are meshed with each other through the toothed grooves, and the elastic body 4 and the flange 5 transmit torque through the meshing.

[0032] In this embodiment, the blades (3) are distributed along the circumference of the inner iron member, and the blades (3) are divided into a plane part and a curved part, wherein the plane part is clamped by the inner iron member (2), and a through hole for screws to pass through is provided on the plane, and the curved part is located in the waist-shaped ventilation hole (2-1) of the inner iron member.

[0033] In this embodiment, the blades (3) are evenly distributed in the circumferential direction of the inner iron member (2), the number of which corresponds to the number of waist-shaped ventilation holes (2-1), and the windward side of the curved surface of the blades (3) is opposite to the prime mover flywheel (6).

[0034] In this embodiment, the inner iron member 2 and the elastomer 4 are combined by a vulcanization process, and the elastomer 4 is made of rubber.

[0035] In this embodiment, the two inner iron parts 2 are arranged opposite to each other, and the blade 3 is clamped in the middle. The blade 3 is made by stamping metal sheets, and the pre-tightening force of the screw B1 connects the three.

[0036] In this embodiment, the guide structure 5-1 on the flange 5 is arranged at the top of the flange teeth and is evenly distributed along the circumference. The number is a multiple of the number of flange teeth (for example, if the number of flange teeth is 24, the guide structure can be 2, 4, 6, 8, 12 or 24). The specific number can be selected according to the actual operating speed and heat dissipation requirements. The curved surface of the guide structure 5-1 on the flange 5 is the windward surface.

[0037] In this embodiment, the blade 3 is divided into a flat part and a curved part. The flat part is clamped by the inner iron member 2, and the curved part is just located in the waist-shaped ventilation hole 2-1 of the two inner iron members 2. When the coupling rotates, the kinetic energy of the curved part of the blade 3 is transferred to the air, increasing the pressure and flow rate of the air. To ensure the correct flow direction of the airflow, it is necessary to ensure that the windward side of the curved part is opposite to the prime mover flywheel 6. (The windward side of the curved part of the blade 3 is judged by: Figure 7 As shown in the top view of the blade, the top and bottom surfaces of the blade are similar to long rectangles, and the two long rectangles can be simplified into two straight lines. The two straight lines intersect and form two pairs of vertex angles. When the coupling rotates, the airflow direction is always parallel to the straight line simplified from the bottom surface, so only one of the openings of the two pairs of vertex angles will be opposite to the airflow direction. The curved surface contained in the angle where the opening is opposite to the airflow direction is the windward surface. )

[0038] In this embodiment, the blades 3 are evenly distributed in the circumferential direction of the inner iron member 2, and the number of blades 3 corresponds to the number of waist-shaped ventilation holes 2-1. The number of blades 3 and waist-shaped ventilation holes 2-1 is 8, and the number of blades 3 depends on the number of waist-shaped ventilation holes 2-1. The curved surface of the blade 3 is located in two opposite waist-shaped ventilation holes 2-1, and the windward surface of the curved surface of the blade 3 is opposite to the prime mover flywheel 6, ensuring that the air flows into the space between the coupling and the prime mover flywheel 6. When the prime mover flywheel 6 rotates, the airflow flows into the waist-shaped ventilation holes 2-1, flows through the blades 3, and finally flows out through the guide structure 5-1 of the flange 5.

[0039] The working principle and use process of this utility model:

[0040] When the coupling is used in conjunction with the prime mover flywheel 6, the prime mover flywheel 6 drives the coupling to rotate as a whole, and air is forced to be sucked in by the blades 3 through the waist-shaped ventilation holes 2-1. The kinetic energy of the blades 3 is transferred to the air, increasing the pressure and flow rate of the air. The air is forced to flow into the space between the coupling and the prime mover flywheel 6. This cycle is repeated, increasing the air flow rate on the surface of the elastomer, thereby strengthening the convection heat exchange between the elastomer and the air, so as to achieve the purpose of enhancing the heat dissipation effect.

[0041] With the interface position between the prime mover and the driven machine unchanged, the air is forced to be transported through the blades, and the guide structure is set to organize the directional flow of the airflow, so as to achieve the effect of forced ventilation and heat dissipation, and improve the service life and torque transmission capacity of the coupling.

[0042] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A ventilated coupling with clamping blades, characterized in that: It comprises a coupling body and a prime mover flywheel (6), and is characterized in that: the coupling body comprises a hub (1), an inner iron member (2), blades (3), an elastic body (4), and a flange (5); The shaft hub (1), the inner iron member (2), the blades (3), the elastic body (4) and the flange (5) are arranged and installed in sequence from the inside to the outside; bolts (B2) are arranged between the flange (5) and the prime mover flywheel (6); screws (B1) are arranged between the shaft hub (1) and the inner iron member (2); a waist-shaped ventilation hole (2-1) is arranged in the middle of the inner iron member (2); and a flow guide structure (5-1) is arranged on the outer circumference of the flange (5) close to the prime mover flywheel (6).

2. A ventilated coupling with clamping blades according to claim 1, characterized in that: The inner iron parts (2) are provided with two and are arranged opposite to each other with a plurality of blades (3) sandwiched between them.

3. A ventilated coupling with clamping blades according to claim 2, characterized in that: The blades (3) are distributed along the circumference of the inner iron piece. The blades (3) are divided into a plane part and a curved part. The plane part is clamped by the inner iron piece (2). A through hole is provided on the plane for screws to pass through. The curved part is located in the waist-shaped ventilation hole (2-1) of the inner iron piece.

4. A ventilated coupling with clamping blades according to claim 2, characterized in that: The blades (3) are evenly distributed in the circumferential direction of the inner iron member (2), the number of which corresponds to the number of waist-shaped ventilation holes (2-1), and the windward side of the curved surface of the blades (3) is opposite to the prime mover flywheel (6).

5. A ventilated coupling with clamping blades according to claim 1, characterized in that: The curved surface of the flow-guiding structure (5-1) is the windward surface.

6. A ventilated coupling with clamping blades according to claim 1, characterized in that: When the prime mover flywheel (6) rotates, the airflow flows into the waist-shaped ventilation hole (2-1), flows through the blades (3), enters the interior of the coupling, and finally flows out from the guide structure (5-1) provided on the outer circumference of the flange (5) end.

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