CN220850487U

CN220850487U - Torque limiter assembly

Info

Publication number: CN220850487U
Application number: CN202322852597.XU
Authority: CN
Inventors: 谢驰; 胡旭; 夏嘉勇
Original assignee: Maomao Chongqing Automobile Drive System Co ltd
Current assignee: Maomao Chongqing Automobile Drive System Co ltd
Priority date: 2023-10-24
Filing date: 2023-10-24
Publication date: 2024-04-26
Anticipated expiration: 2033-10-24

Abstract

The utility model discloses a torque limiter assembly, which comprises a flywheel, a flywheel cover plate, a disc spring, a pressure plate, a friction pair and a vibration reduction assembly, wherein the flywheel is molded and thickened and weighted in a casting way; the flywheel is connected with the flywheel cover plate through screws; a plurality of stamping formed tongue pieces are arranged on the flywheel cover plate, one side of the flywheel is connected with the power device, the other side of the flywheel is connected with the tongue pieces to form a containing cavity, and the disc spring, the pressure plate and the friction pair are sequentially stacked in the cavity from one side of the tongue pieces. The traditional flywheel disc is split into the flywheel and the flywheel cover plate, the flywheel is thickened and weighted, the inertia is ensured to meet the requirement, and the flywheel disc is convenient to disassemble and assemble through screw connection. And (5) casting and forming the flywheel, and stamping and forming the flywheel cover plate. The hub is split into two parts, the hub sleeve is formed by stamping, the efficiency is high, the machining mode is simplified, the hub core is machined, the machining difficulty is reduced, and the cost is reduced.

Description

Torque limiter assembly

Technical Field

The utility model belongs to the technical field of torque limiters, and particularly relates to a torque limiter assembly for a power device.

Background

The torque limiter (also called as torque limiter, safety coupling, safety clutch, BMOOM limiter) is a component for connecting the main machine with the working machine, and has the main function of overload protection. This prevents mechanical damage and avoids costly downtime losses. The torque limiter adopts a spring load type friction surface, and the sliding torque is preset by adjusting the spring force through a nut or a bolt. The friction type torque limiter and the steel ball type torque limiter (ball type torque limiter) can be divided according to the working principle, and the application range is as follows: electronic equipment industry, automated production line, conveyor industry, etc.

The applicant filed a patent publication number CN217736154U, entitled "torque limiter assembly", and discloses a torque limiter in which the flywheel disc is integrally formed by stamping, and tongues are stamped on the first stepped surface of the flywheel disc to limit the components, thereby replacing the role of the cover plate. However, through the flywheel disc formed by stamping, the inertia is small, so that the whole weight of the torque limiter assembly is small, the fluctuation of the rotation speed of the engine is large, and the inertia requirement is large particularly for a vehicle type with high requirement, so that the driving comfort is influenced to a certain extent. The hub middle part of the torque limiter assembly is provided with a perforation, the perforation is generally aligned with a bolt mounting hole on a flywheel or a flywheel disc, the bolt mounting hole is used for mounting the whole torque limiter assembly on a power system through a bolt, when the torque limiter assembly is dismounted, the perforation in the hub middle part is required to be aligned with the bolt mounting hole, but due to the fact that the perforation and the bolt mounting hole are misplaced in the use process of a vibration reduction assembly, the flywheel disc of the torque limiter assembly is of an integral structure and cannot be aligned, so that the dismounting is inconvenient.

Meanwhile, the hub of the existing torque limiter assembly is integrally arranged, the periphery of the hub is thinner by forging, and thicker materials are required to be processed and thinned, so that partial materials are required to be removed by turning, the weight of a blank is larger, the cost of the blank is high, the forging is very difficult, and the process requirement is high.

Disclosure of utility model

The torque limiter assembly is simple in structure, improves driving comfort, ensures stable running of a power system, is convenient to detach, and reduces cost and processing requirements.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

The torque limiter assembly comprises a cast-molded thickened and weighted flywheel, a stamped flywheel cover plate, a disc spring, a pressure plate, a friction pair and a vibration reduction assembly; the flywheel is connected with the flywheel cover plate through screws; the flywheel cover plate is provided with a plurality of stamping forming tongue pieces, one side of the flywheel is connected with the power device, the other side of the flywheel is connected with the tongue pieces to form a containing cavity, and the disc spring, the pressure plate and the friction pair are sequentially overlapped in the cavity from one side of the tongue pieces.

The existing flywheel disc is split into the flywheel and the flywheel cover plate, and the flywheel framework is weighted, so that the inertia meeting requirements is ensured, and the driving comfort is improved. Meanwhile, the flywheel is connected with the flywheel disc through the screw, so that the torque limiter assembly is convenient to install and detach.

Preferably, a plurality of positioning columns are arranged at the edge of the flywheel, and a plurality of positioning holes corresponding to the positioning columns are arranged on the flywheel cover plate; the flywheel edge and the flywheel cover plate edge are respectively provided with a plurality of screw mounting holes which correspond to each other.

Through setting up the reference column on the flywheel, set up corresponding locating hole on the flywheel apron, can be convenient for quick with the screw mounting hole alignment on flywheel and the flywheel apron, the quick installation screw of being convenient for.

Further, the vibration reduction assembly comprises a driven disc, a vibration reduction disc, a disc hub arranged between the vibration reduction disc and the driven disc and a vibration reduction spring arranged between the vibration reduction disc and the driven disc and matched with the disc hub; the outer circular surface of the driven disc is riveted between the friction pairs, and the inner circular surface of the driven disc is connected with the vibration reduction disc through a limiting block.

Further, the hub comprises a hub core arranged at the center and a hub sleeve sleeved on the hub core and formed by stamping; the hub core comprises a spline housing and an annular limiting groove arranged at the periphery of the spline housing; the annular limiting groove is coaxially arranged with the spline housing; the hub sleeve is arranged in a hollow mode and is sleeved in the annular limiting groove in a clamping mode.

Through with the hub split for hub core and hub sleeve, can be with hub core and the separately processing of hub sleeve, the hub core passes through the machining mode preparation, and the hub sleeve passes through stamping forming, has simplified the processing mode of current hub, has reduced the processing degree of difficulty, has improved machining efficiency, the cost is reduced.

Further, the annular limiting groove is formed by an annular pressing edge and an annular flanging, and the hub sleeve is embedded in the annular pressing edge and the annular flanging; an annular abutting arm abutting against the hub sleeve is arranged on the periphery of the annular flanging, and a U-shaped groove is formed between the annular abutting arm and the outer wall of the spline housing.

The annular flange and the annular flange of the annular limiting groove are formed through heat treatment, the hub sleeve is firstly pressed on the annular abutting arm of the annular flange after heat treatment, and then the annular flange is formed through hot pressing, so that the hub sleeve is embedded and fixed in the annular positioning groove.

The torque limiter assembly of the present utility model has the following beneficial effects:

1. The traditional flywheel disc is split into the flywheel and the flywheel cover plate, the flywheel is thickened and weighted, the inertia is ensured to meet the requirement, and the flywheel disc is convenient to disassemble and assemble through screw connection. And (5) casting and forming the flywheel, and stamping and forming the flywheel cover plate.

2. The hub is split into two parts, the hub sleeve is formed by stamping, the efficiency is high, the machining mode is simplified, the hub core is machined, the machining difficulty is reduced, and the cost is reduced.

Drawings

Brief description of the drawingsthe accompanying drawings and references in the drawings are provided:

FIG. 1 is a schematic illustration of a torque limiter assembly of an embodiment;

FIG. 2 is a cross-sectional view at A-A in FIG. 1;

FIG. 3 is an enlarged view at B in FIG. 2;

FIG. 4 is a general exploded view of an embodiment torque limiter;

FIG. 5 is a schematic view of a hub structure according to an embodiment;

FIG. 6 is a cross-sectional view taken at C-C of FIG. 5;

FIG. 7 is an enlarged view of FIG. 6 at D;

In the figure: 1 is a flywheel; 2 is a flywheel cover plate; 3 is a disc spring; 4 is a pressure plate; 5 is a friction pair; 6 is a screw; 7 is a tongue piece; 8 is a positioning column; 9 is a positioning hole; 10 is a screw mounting hole; 11 is a driven disc; 12 is a vibration damping disk; 13 is a hub; 14 is a vibration damping spring; 15 is a limiting block; 16 is a hub core; 17 is a disk hub; 18 is a spline housing; 19 is an annular blank holder; 20 is an annular abutment arm; 21 are U-shaped grooves.

Detailed Description

The utility model will be further elucidated with reference to a non-limiting example given in the following with reference to the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the utility model. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present utility model.

Examples

As shown in fig. 1, 2 and 3, the torque limiter assembly comprises a flywheel 1, a flywheel cover plate 2, a disc spring 3, a pressure plate 4, a friction pair 5 and a vibration reduction assembly, wherein the flywheel is thickened and weighted by casting; the flywheel 1 is connected with the flywheel cover plate 2 through a screw 6; a plurality of stamping-formed tongue pieces 7 are arranged on the flywheel cover plate 2, one side of the flywheel 1 is connected with the power device, the other side of the flywheel 1 and the tongue pieces 7 form a containing cavity, and the disc spring 3, the pressure plate 4 and the friction pair 5 are sequentially laminated in the cavity from one side of the tongue pieces 7. The vibration damping assembly comprises a driven disc 11, a vibration damping disc 12, a disc hub 13 arranged between the vibration damping disc 12 and the driven disc 11, and a vibration damping spring 14 arranged between the vibration damping disc 12 and the driven disc 11 and matched with the disc hub 13; the outer circular surface of the driven disc 11 is riveted between the friction pairs 5, and the inner circular surface of the driven disc 11 is connected with the damping disc 12 through a limiting block 15.

As shown in fig. 4, a plurality of positioning columns 8 are arranged at the edge of the flywheel 1, and a plurality of positioning holes 9 corresponding to the positioning columns 8 are arranged on the flywheel cover plate 2; a plurality of screw mounting holes 10 corresponding to each other are respectively arranged at the edge of the flywheel 1 and the edge of the flywheel cover plate 2.

The hub 13 as shown in fig. 5, 6 and 7 comprises a hub core 16 arranged at the center and a hub sleeve 17 sleeved on the hub core 16 and formed by punching; hub core 16 includes a spline housing 18 and an annular defining groove disposed about the periphery of spline housing 18; the annular limiting groove is coaxially arranged with the spline housing 18; the hub 17 is hollow and is snapped into the annular limiting groove. As shown in fig. 7, the annular limiting groove is formed by an annular pressing edge 19 and an annular flanging, and the hub 17 is embedded in the annular pressing edge 19 and the annular flanging; an annular abutment arm 20 is arranged on the periphery of the annular flanging and abuts against the hub 17, and the annular abutment arm 20 and the outer wall of the spline housing 18 form a U-shaped groove 21.

As shown in fig. 1, 2, 3 and 4, a torque limiter assembly is installed, firstly, a thickened and weighted flywheel 1 is installed on a power output structure, then, structures such as a disc spring 3, a pressure plate 4 and the like except a flywheel cover plate 2 are installed in an installation cavity on one side of the flywheel 1, finally, the flywheel cover plate 2 is connected with the flywheel 1 through a screw 6, and when the flywheel cover plate 2 is installed, a positioning column 8 on the flywheel 1 is matched with a positioning hole 9 on the flywheel cover plate 2, so that a screw installation hole 10 on the flywheel 1 is aligned with a screw installation hole 10 on the flywheel cover plate 2, and finally, the flywheel 1 and the flywheel cover plate 2 are fastened with each other through the cooperation of the screw 6 and the screw installation hole 10.

As shown in fig. 5, 6, 7, the hub 13 of the present embodiment is press-insert molded from a hub sleeve 17 and a hub core 16, wherein the hub sleeve 17 is formed by press molding and the hub core 16 is formed by machining; before the hub sleeve 17 and the hub core 16 are mutually fixed, the hub sleeve 17 is hollow and internally provided with a circle of internal teeth, the hub core 16 is provided with an annular flanging, and a U-shaped groove 21 is formed between the annular abutting arm 20 and the spline sleeve 18; the internal teeth of the hub 17 are heat-treated and press-fitted around the hub core 16 and integrally formed with the hub core 16, wherein the internal teeth of the hub 17 are deformed by heat treatment and pressure treatment, so that the hub 17 and the hub core 16 are tightly combined with each other, and simultaneously, the deformed internal teeth are expanded to the periphery, and part of the deformed internal teeth can be accommodated by providing the U-shaped grooves 21, so that the hub 17 is uniformly, smoothly and stably fixed on the hub core 16. Finally, the hub core 16 is subjected to heat treatment, and an annular flanging is pressed out on the periphery of the hub core 16 to press the hub sleeve 17, so that the hub sleeve 17 is tightly fixed in the annular limiting groove. The hub sleeve 17 is formed by stamping, so that the efficiency is high, and the processing mode is simplified; the hub core 16 is machined, so that the machining difficulty is reduced, and the cost is reduced.

In the description of the present utility model, it should be understood that, if the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, they are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, when used herein, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected," when used herein, are intended to be broadly interpreted, as referring to either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.

Claims

1. The torque limiter assembly is characterized by comprising a flywheel (1) which is molded and thickened and weighted, a flywheel cover plate (2) which is molded and stamped, a disc spring (3), a pressure plate (4), a friction pair (5) and a vibration reduction assembly; the flywheel (1) is connected with the flywheel cover plate (2) through screws (6); be provided with a plurality of stamping forming's tongue piece (7) on flywheel apron (2), flywheel (1) one side is connected with power device, the opposite side with tongue piece (7) form one and hold the cavity, dish spring (3), pressure disk (4) and friction pair (5) are overlapped in proper order in this cavity from tongue piece (7) one side.

2. A torque limiter assembly as claimed in claim 1 wherein a plurality of locating posts (8) are provided on the rim of the flywheel (1), and a plurality of locating holes (9) corresponding to the locating posts (8) are provided on the flywheel cover plate (2); a plurality of screw mounting holes (10) corresponding to each other are respectively arranged at the edge of the flywheel (1) and the edge of the flywheel cover plate (2).

3. A torque limiter assembly as claimed in claim 1 wherein the damping assembly comprises a driven disc (11), a damping disc (12), a hub (13) disposed between the damping disc (12) and the driven disc (11), and a damping spring (14) disposed between the damping disc (12) and the driven disc (11) cooperating with the hub (13); the outer circular surface of the driven disc (11) is riveted between the friction pairs (5), and the inner circular surface of the driven disc (11) is connected with the vibration reduction disc (12) through a limiting block (15).

4. A torque limiter assembly as claimed in claim 3 wherein said hub (13) includes a centrally disposed hub core (16) and a stamped hub sleeve (17) over the hub core (16); the hub core (16) comprises a spline sleeve (18) and an annular limiting groove arranged at the periphery of the spline sleeve (18); the annular limiting groove and the spline housing (18) are coaxially arranged; the hub sleeve (17) is arranged in a hollow mode and sleeved in the annular limiting groove.

5. The torque limiter assembly of claim 4, wherein the annular limiting groove is formed by an annular bead (19) and an annular flange, the hub (17) being fitted within the annular bead (19) and the annular flange; an annular abutting arm (20) abutting against the hub sleeve (17) is arranged on the periphery of the annular flanging, and a U-shaped groove (21) is formed by the annular abutting arm (20) and the outer wall of the spline housing (18).