阅读说明：本技术 一种限扭飞轮总成 (Torsion-limiting flywheel assembly ) 是由 王和清 王洪彬 于 2020-08-05 设计创作，主要内容包括：本发明公开了一种限扭飞轮总成,包括：飞轮本体、输出盘和第一摩擦件,第一摩擦件与输出盘之间设有用于摩擦传动的第二摩擦件,第一摩擦件上设有处于压缩状态的、用于将第一摩擦件轴向压紧第二摩擦件、以压紧输出盘的弹性件；当输出盘设置于第一摩擦件和飞轮本体之间时,弹性件与飞轮本体连接,且输出盘和飞轮本体之间设有第三摩擦件,第一摩擦件随飞轮本体同步转动；当第一摩擦件设置于飞轮本体和输出盘之间时,弹性件设置于飞轮本体和第一摩擦件之间,输出盘的外侧设有用于将输出盘压紧于第二摩擦件的压盖,第三摩擦件设置于压盖与输出盘之间,第一摩擦件随压盖同步转动,压盖连接于飞轮本体。本申请结构简单、体积小、重量轻、制造成本低。(The invention discloses a torque-limiting flywheel assembly, which comprises: the flywheel comprises a flywheel body, an output disc and a first friction piece, wherein a second friction piece for friction transmission is arranged between the first friction piece and the output disc, and an elastic piece which is in a compression state and is used for axially pressing the first friction piece against the second friction piece so as to press the output disc is arranged on the first friction piece; when the output disc is arranged between the first friction piece and the flywheel body, the elastic piece is connected with the flywheel body, a third friction piece is arranged between the output disc and the flywheel body, and the first friction piece rotates synchronously with the flywheel body; when the first friction piece is arranged between the flywheel body and the output disc, the elastic piece is arranged between the flywheel body and the first friction piece, the outer side of the output disc is provided with a gland used for compressing the output disc to the second friction piece, the third friction piece is arranged between the gland and the output disc, the first friction piece rotates synchronously along with the gland, and the gland is connected to the flywheel body. The utility model has the advantages of simple structure, small, light in weight, low in manufacturing cost.)

1. A torque limited flywheel assembly, comprising: the flywheel comprises a flywheel body (4), an output disc (5) and a first friction piece (3), wherein a second friction piece (2) for friction transmission is arranged between the first friction piece (3) and the output disc (5), and an elastic piece (1) which is in a compression state and is used for axially pressing the first friction piece (3) against the second friction piece (2) so as to press the output disc (5) is arranged on the first friction piece (3);

when the output disc (5) is arranged between the first friction piece (3) and the flywheel body (4), the elastic piece (1) is connected with the flywheel body (4), a third friction piece (6) is arranged between the output disc (5) and the flywheel body (4), and the first friction piece (3) rotates synchronously with the flywheel body (4);

when first friction spare (3) set up in flywheel body (4) with when exporting between dish (5), elastic component (1) set up in flywheel body (4) with between first friction spare (3), the outside of exporting dish (5) is equipped with be used for with export dish (5) compress tightly in gland (7) of second friction spare (2), third friction spare (6) set up in gland (7) with between exporting dish (5), first friction spare (3) are along with gland (7) synchronous rotation, gland (7) connect in flywheel body (4).

2. The torque-limiting flywheel assembly according to claim 1, wherein the flywheel body (4) comprises a flywheel ring surface, an annular bulge is arranged on the periphery of the flywheel ring surface, and a plurality of threaded holes are uniformly formed in the annular bulge;

when the output disc (5) is arranged between the first friction piece (3) and the flywheel body (4), the elastic piece (1) is connected with the threaded hole through a first bolt;

when the first friction piece (3) is arranged between the flywheel body (4) and the output disc (5), the gland (7) is connected with the threaded hole through a second bolt.

3. The torque-limiting flywheel assembly according to claim 2, wherein when the output disc (5) is arranged between the first friction member (3) and the flywheel body (4), the flywheel body (4) is provided with a first annular step surface against which the third friction member (6) is pressed;

when the first friction piece (3) is arranged between the flywheel body (4) and the output disc (5), the flywheel body (4) is provided with a second annular step surface, and the elastic piece (1) is tightly pressed on the second annular step surface.

4. The torque-limiting flywheel assembly according to claim 3, wherein the outer diameter of the elastic member (1) is larger than the outer diameter of the second annular step surface, a protective cover (8) is arranged between the gland (7) and the end surface of the threaded hole, the protective cover (8) comprises an inner ring and an outer ring, the outer ring is arranged between the gland (7) and the end surface of the threaded hole, and the inner ring is tightly pressed on the inner end surface of the elastic member (1) which exceeds the second annular step surface.

5. The torque-limiting flywheel assembly according to claim 2, wherein when the output disc (5) is arranged between the first friction member (3) and the flywheel body (4), at least one first groove (9) is formed in the inner wall of the annular protrusion, and first flanges (10) which are the same as the first grooves (9) in number and are in one-to-one matching connection with the first grooves (9) are formed in the periphery of the first friction member (3).

6. The torque-limiting flywheel assembly according to claim 2, wherein when the first friction member (3) is arranged between the flywheel body (4) and the output disc (5), the gland (7) is provided with a plurality of second grooves, and the periphery of the first friction member (3) is provided with second flanges which are consistent in number with the second grooves and are in one-to-one matching connection with the second grooves.

7. Torque limited flywheel assembly according to claim 1, characterized in that the second friction member (2) and the third friction member (6) are friction discs.

8. The torque-limiting flywheel assembly according to claim 2, wherein when the output disc (5) is disposed between the first friction member (3) and the flywheel body (4), the end surface of the threaded hole is a slope, and the distance between the outer periphery of the slope and the flywheel body (4) is longer than the distance between the inner periphery of the slope and the flywheel body (4).

9. Torque limited flywheel assembly according to any of claims 1 to 8, wherein the output disc (5) comprises an inner disc and an outer disc, the inner and outer discs being connected by riveting or welding.

10. Torque limited flywheel assembly according to claim 9, characterized in that the elastic element (1) is a disc spring.

Technical Field

The invention relates to the technical field of transmission devices, in particular to a torque-limiting flywheel assembly.

Background

The torque limiter is a device which can absorb energy and limit torque by reducing impact overload vibration energy in motion, and is widely applied to a plurality of fields.

Disclosure of Invention

In view of the above, the present invention provides a torque-limiting flywheel assembly with simple structure, small volume, light weight and low cost, which can meet the requirement of buffering torque-limiting.

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

a torque limited flywheel assembly comprising: the flywheel comprises a flywheel body, an output disc and a first friction piece, wherein a second friction piece for friction transmission is arranged between the first friction piece and the output disc, and an elastic piece which is in a compression state and is used for axially pressing the first friction piece against the second friction piece so as to press the output disc is arranged on the first friction piece;

when the output disc is arranged between the first friction piece and the flywheel body, the elastic piece is connected with the flywheel body, a third friction piece is arranged between the output disc and the flywheel body, and the first friction piece rotates synchronously with the flywheel body;

when the first friction piece is arranged between the flywheel body and the output disc, the elastic piece is arranged between the flywheel body and the first friction piece, a pressing cover used for pressing the output disc to the second friction piece is arranged on the outer side of the output disc, the third friction piece is arranged between the pressing cover and the output disc, the first friction piece rotates synchronously with the pressing cover, and the pressing cover is connected to the flywheel body.

Preferably, the flywheel body comprises a flywheel ring surface, an annular bulge is arranged on the periphery of the flywheel ring surface, and a plurality of threaded holes are uniformly formed in the annular bulge;

when the output disc is arranged between the first friction piece and the flywheel body, the elastic piece is connected with the threaded hole through a first bolt;

when the first friction piece is arranged between the flywheel body and the output disc, the gland is connected with the threaded hole through a second bolt.

Preferably, when the output disc is arranged between the first friction piece and the flywheel body, the flywheel body is provided with a first annular step surface, and the third friction piece is pressed against the first annular step surface;

when the first friction piece is arranged between the flywheel body and the output disc, the flywheel body is provided with a second annular step surface, and the elastic piece is tightly pressed on the second annular step surface.

Preferably, the outer diameter of the elastic part is larger than the outer diameter of the second annular step surface, a protective cover is arranged between the gland and the end surface of the threaded hole, the protective cover comprises an inner ring and an outer ring, the outer ring is arranged between the gland and the end surface of the threaded hole, and the inner ring is tightly pressed on the inner end surface of the elastic part exceeding the second annular step surface.

Preferably, when the output disc is arranged between the first friction piece and the flywheel body, at least one first groove is formed in the inner wall of the annular protrusion, and first flanges which are consistent with the first grooves in number and are in one-to-one matching connection with the first grooves are arranged on the periphery of the first friction piece.

Preferably, when the first friction piece is arranged between the flywheel body and the output disc, the gland is provided with a plurality of second grooves, and second flanges which are consistent with the second grooves in number and are in one-to-one matching connection with the second grooves are arranged on the periphery of the first friction piece.

Preferably, the second friction member and the third friction member are both friction plates.

Preferably, when the output disc is disposed between the first friction member and the flywheel body, an end surface of the threaded hole is an inclined surface, and a distance between an outer periphery of the inclined surface and the flywheel body is longer than a distance between an inner periphery of the inclined surface and the flywheel body.

Preferably, the output disc comprises an inner disc and an outer disc, and the inner disc and the outer disc are connected through riveting or welding.

Preferably, the elastic member is a disc spring.

When the abrasion among the first friction member, the second friction member and the output disc is increased, gaps are generated among the first friction member, the second friction member and the output disc, and the first friction member, the second friction member and the output disc slip, thereby reducing the output efficiency. Because the elastic part in the torque-limiting flywheel assembly is in a compressed state, the elastic part stores elastic potential energy, when the abrasion among the first friction part, the second friction part and the output disc is increased, the elastic potential energy can be released by the elastic part, and the first friction part, the second friction part and the output disc are continuously pressed tightly, so that the service life of the torque-limiting flywheel assembly is prolonged; in addition, as the flywheel body, the first friction piece, the second friction piece and the output disc are in friction transmission, when the input torque is large, the torque input by the first friction piece is increased, so that the first friction piece and the second friction piece slip, the fracture accident caused by rigid connection is avoided, and the buffering torque-limiting requirement can be met; moreover, the structure is simple, the volume is small, the weight is light, and the manufacturing cost is low.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic view of a first embodiment of a torque limited flywheel assembly provided by the present invention;

FIG. 2 is a schematic view of a second embodiment of a torque limited flywheel assembly provided by the present invention;

FIG. 3 is a schematic view of a first embodiment of a torque limited flywheel assembly provided in accordance with the present invention;

FIG. 4 is a schematic view of a first friction member of a first embodiment of a torque limiting flywheel assembly provided in accordance with the present invention;

FIG. 5 is a schematic view of a disc spring according to the present invention;

fig. 6 is a schematic structural view of the output disc provided by the present invention in a split state.

In FIGS. 1-6:

1-elastic piece, 2-second friction piece, 3-first friction piece, 4-flywheel body, 5-output disc, 6-third friction piece, 7-gland, 8-protective cover, 9-first groove, 10-first flange and 11-rivet.

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.

The core of the invention is to provide a torque-limiting flywheel assembly which has simple structure, small volume, light weight and low price and can meet the requirements of buffering and torque limiting.

Referring to fig. 1 to 6, fig. 1 is a schematic diagram of a torque limiting flywheel assembly according to a first embodiment of the present invention; FIG. 2 is a schematic view of a second embodiment of a torque limited flywheel assembly provided by the present invention; FIG. 3 is a schematic view of a first embodiment of a torque limited flywheel assembly provided in accordance with the present invention; FIG. 4 is a schematic view of a first friction member of a first embodiment of a torque limiting flywheel assembly provided in accordance with the present invention; FIG. 5 is a schematic view of a disc spring according to the present invention; fig. 6 is a schematic structural view of the output disc provided by the present invention in a split state.

A torque limited flywheel assembly comprising: the flywheel comprises a flywheel body 4, an output disc 5 and a first friction piece 3, wherein a second friction piece 2 for friction transmission is arranged between the first friction piece 3 and the output disc 5, and an elastic piece 1 which is in a compression state and is used for axially pressing the first friction piece 3 against the second friction piece 2 so as to press the output disc 5 is arranged on the first friction piece 3;

when the output disc 5 is arranged between the first friction piece 3 and the flywheel body 4, the elastic piece 1 is connected with the flywheel body 4, a third friction piece 6 is arranged between the output disc 5 and the flywheel body 4, and the first friction piece 3 synchronously rotates along with the flywheel body 4;

when the first friction piece 3 is arranged between the flywheel body 4 and the output disc 5, the elastic piece 1 is arranged between the flywheel body 4 and the first friction piece 3, the outer side of the output disc 5 is provided with a gland 7 used for pressing the output disc 5 to the second friction piece 2, the third friction piece 6 is arranged between the gland 7 and the output disc 5, the first friction piece 3 synchronously rotates along with the gland 7, and the gland 7 is connected to the flywheel body 4.

It should be noted that the flywheel body 4, the output disc 5, the first friction member 3, the second friction member 2, and the third friction member 6 are all configured as an annular disc, a center hole is formed in the center of the flywheel body 4 for inputting power as a driving member, and a center hole is formed in the center of the output disc 5 for outputting power as a driven member.

When output dish 5 sets up between first friction piece 3 and flywheel body 4, first friction piece 3 rotates along with flywheel body 4 is synchronous, under the effect of the pressure tight of elastic component 1, elastic component 1 compresses tightly first friction piece 3 and produces frictional force, first friction piece 3 drives second friction piece 2 and rotates, second friction piece 2 drives output dish 5 and rotates, thereby transmission power, in order to increase the frictional force between flywheel and the output dish 5, set up third friction piece 6 between flywheel and output dish 5, prevent skidding.

When first friction piece 3 sets up between flywheel body 4 and output dish 5, gland 7 rotates along with flywheel body 4 is synchronous, gland 7 drives first friction piece 3 and rotates in step, under the effect of the pressure tight of elastic component 1, produce frictional force between first friction piece 3 and the second friction piece 2, it rotates to drive second friction piece 2, second friction piece 2 drives output dish 5 and rotates, in order to increase the frictional force between output dish 5 and the gland 7, set up third friction piece 6 between gland 7 and output dish 5, prevent skidding.

When the wear between the first friction member 3, the second friction member 2, and the output disc 5 increases, a gap may be generated between the first friction member 3, the second friction member 2, and the output disc 5, and the first friction member 3, the second friction member 2, and the output disc 5 may slip, reducing the output efficiency. Because the elastic part 1 is in a compressed state, the elastic part 1 stores elastic potential energy, when the abrasion among the first friction part 3, the second friction part 2 and the output disc 5 is increased, the elastic part 1 releases the elastic potential energy and continuously compresses the first friction part 3, the second friction part 2 and the output disc 5, and therefore the service life of the torque-limiting flywheel assembly is prolonged; in addition, as the flywheel body 4 and the first friction piece 3, the second friction piece 2 and the output disc 5 are in friction transmission, when the input torque is larger, the torque input by the first friction piece 3 is increased, so that the first friction piece 3 and the second friction piece 2 are slipped, the fracture accident caused by rigid connection is avoided, and the buffering torque-limiting requirement can be met; moreover, the structure is simple, the volume is small, the weight is light, and the manufacturing cost is low.

On the basis of the above embodiment, as a further preferred option, the flywheel body 4 includes a flywheel ring surface, the periphery of the flywheel ring surface is provided with an annular bulge, and the annular bulge is uniformly provided with a plurality of threaded holes;

when the output disc 5 is arranged between the first friction piece 3 and the flywheel body 4, the elastic piece 1 is connected with the threaded hole through a first bolt;

when the first friction member 3 is disposed between the flywheel body 4 and the output disc 5, the gland 7 is connected with the threaded hole by the second bolt.

It should be noted that the periphery of the elastic element 1 is provided with first openings the number of which is the same as that of the threaded holes, each first opening corresponds to one threaded hole, and the first openings and the threaded holes are connected through first bolts. And second openings are formed in the periphery of the gland 7, each second opening corresponds to one threaded hole, and the second openings and the threaded holes are connected through second bolts. Make flywheel body 4 and elastic component 1 connect or make flywheel body 4 or gland 7 connect and to be convenient for the dismouting through setting up the screw hole, it is more serious when first friction piece 3, second friction piece 2, third friction piece 6, the wearing and tearing of output dish 5, elastic component 1 is not enough to compress tightly and when the transmission, can in time change.

On the basis of the above embodiment, as a further preferable mode, when the output disc 5 is disposed between the first friction member 3 and the flywheel body 4, the flywheel body 4 is provided with a first annular step surface, and the third friction member 6 is pressed against the first annular step surface;

when the first friction piece 3 is arranged between the flywheel body 4 and the output disc 5, the flywheel body 4 is provided with a second annular step surface, and the elastic piece 1 is tightly pressed on the second annular step surface.

It should be noted that, when the output disc 5 is disposed between the first friction element 3 and the flywheel body 4, the first annular step surface is disposed to reduce the contact area between the flywheel body 4 and the third friction element 6, so as to reduce the volume of the third friction element 6, and similarly, when the first friction element 3 is disposed between the flywheel body 4 and the output disc 5, the second annular step surface is disposed to reduce the contact area between the flywheel body 4 and the elastic element 1, so as to reduce the volume of the elastic element 1.

On the basis of the above embodiment, as a further preferred option, the outer diameter of the elastic member 1 is larger than the outer diameter of the second annular step surface, a protecting cover 8 is arranged between the gland 7 and the end surface of the threaded hole, the protecting cover 8 includes an inner ring and an outer ring, the outer ring is arranged between the gland 7 and the end surface of the threaded hole, and the inner ring is compressed on the inner end surface of the elastic member 1 exceeding the second annular step surface.

It should be noted that an annular groove is arranged between the second annular step surface and the annular protrusion, an inner ring of the gland 7 is recessed into the annular groove, the inner ring and the outer ring are arranged in parallel, the outer ring is arranged between the press rod and the end surface of the threaded hole, so that the inner ring serves as a fulcrum to support the elastic member 1 to exceed the inner end surface of the second annular step surface, and under the action of the pressing force of the gland 7, the elastic member 1 is compressed, so that the elastic member 1 stores elastic potential energy. The present embodiment provides the gland 7 to support the inner end surface of the elastic member 1, so that the size of the elastic member 1 is more selected.

On the basis of the above embodiment, as a further preferred mode, when the output disc 5 is disposed between the first friction member 3 and the flywheel body 4, at least one first groove 9 is disposed on the inner wall of the annular protrusion, and the outer periphery of the first friction member 3 is provided with first flanges 10, the number of which is the same as that of the first grooves 9, and the first flanges are in one-to-one matching connection with the first grooves 9.

It should be noted that all the first grooves 9 are uniformly arranged on the inner wall of the annular protrusion, all the first flanges 10 are uniformly arranged on the periphery of the first friction member 3, and each of the first flanges 10 extends into the first groove 9 in a one-to-one correspondence manner, so that when the first grooves 9 drive the first flanges 10 to move, the stress on different parts of the first friction member 3 is consistent, and the first friction member 3 is prevented from deforming. The first flange 10 is axially movable in the first recess 9 so that the first friction member 3 is axially movable to press the second friction member 2 when wear between the first friction member 3, the second friction member 2 and the output disc 5 increases. The first friction piece 3 and the flywheel body 4 provided by the embodiment have simple connecting structure and are convenient to process, disassemble and assemble.

On the basis of the above embodiment, as a further preferred option, when the first friction member 3 is disposed between the flywheel body 4 and the output disc 5, the gland 7 is provided with a plurality of second grooves, and the outer periphery of the first friction member 3 is provided with second flanges which are consistent in number with the second grooves and are in one-to-one matching connection with the second grooves.

It should be noted that all the second grooves are uniformly arranged on the gland 7, all the second flanges are uniformly arranged on the periphery of the first friction member 3, and each second flange extends into the second groove in a one-to-one correspondence manner, so that when the second grooves drive the second flanges to move, the stress on different parts of the first friction member 3 is consistent, and the first friction member 3 is prevented from deforming. The second flange is axially movable in the second recess so that the first friction member 3 is axially movable against the second friction member 2 as wear between the first friction member 3, the second friction member 2 and the output disc 5 increases. The connecting structure of the first friction member 3 and the gland 7 provided by the embodiment is simple and convenient to process, disassemble and assemble.

In addition to the above embodiments, it is further preferable that both the second friction member 2 and the third friction member 6 are friction plates.

It should be noted that, the surfaces of the two sides of the friction plate are both subjected to rough treatment, the roughness can be set according to the practical application condition, and the friction plate is small in size and high in transmission efficiency so as to reduce the size of the torque-limiting flywheel assembly and improve the transmission efficiency of the torque-limiting flywheel assembly.

In addition to the above-described embodiment, it is further preferable that when the output disc 5 is provided between the first friction material 3 and the flywheel main body 4, the end surface of the screw hole is a slope, and the distance between the outer circumference of the slope and the flywheel main body 4 is longer than the distance between the inner circumference of the slope and the flywheel main body 4.

It should be noted that, because the end face of the threaded hole is an inclined plane, when the abrasion among the first friction member 3, the second friction member 2 and the output disc 5 increases, the elastic potential energy is released by the elastic member 1, and at this time, the first bolt is continuously locked, so that the interval between the elastic member 1 and the end face of the threaded hole can be reduced, the elastic member 1 further compresses the first friction member 3, and the service life of the torque limiting flywheel assembly is further prolonged.

On the basis of the above embodiment, it is further preferable that the output disc 5 includes an inner disc and an outer disc, and the inner disc and the outer disc are connected by caulking or welding.

It should be noted that the inner disc and the outer disc can be connected by rivets 11 or welded, and the inner disc can be connected with different output members by setting different inner discs, so that the torque limiting flywheel assembly has a wider application range.

In addition to the above embodiments, it is further preferable that the elastic member 1 is a disc spring.

The disc spring is a disc spring, the outer periphery and the inner periphery are located on different planes, a circular table surface is arranged between the inner periphery and the outer periphery, and the disc spring can be pressed into a flat plate shape during axial compression and has elasticity, so that elastic potential energy can be stored. The dish spring is small, and the processing and the installation of being convenient for are more applicable to the limit torsion flywheel assembly that this application provided.

In addition to the above embodiments, the first friction material 3 is preferably machined from a metal material, preferably steel. The second friction member 2 and the third friction member 6 are machined from a non-metallic material.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The torque limiting flywheel assembly provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.