CN218325893U

CN218325893U - Integrated torque limiter

Info

Publication number: CN218325893U
Application number: CN202222879156.4U
Authority: CN
Inventors: 彭李; 黄烈涛; 杜慎之; 王照锦
Original assignee: Seres Group Co Ltd
Current assignee: Chongqing Xiaokang Power Co ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-01-17
Anticipated expiration: 2032-10-31

Abstract

The utility model discloses an integrated torque limiter, which comprises a flywheel, a friction plate driven part and a limiting disc which are coaxially arranged between an engine and a gearbox, wherein the limiting disc is provided with a convex ring part and an accommodating part, and the accommodating part is used for accommodating the friction plate driven part; the friction plate driven part is arranged in the accommodating part of the limiting disc, and the flywheel and the limiting disc are connected through a fastener to form a torque limiter whole; the integrated torque limiter provided by the utility model integrates the flywheel and the torque limiter into a whole to form a new torque limiter, and compared with the traditional combined structure, the integrated torque limiter has smaller overall axial size and can be arranged on more types of vehicle models; the flywheel in the torque limiter is designed as a sheet metal stamping part, so that the axial size can be compressed while the assembly weight can be reduced; meanwhile, the torque limiter is assembled by adopting bolts, so that the torque limiter is convenient to maintain and disassemble.

Description

Integrated torque limiter

Technical Field

The utility model relates to a torque limiter technical field, concretely relates to integrated form torque limiter.

Background

In a conventional hybrid vehicle design, a torque limiter is generally provided between a driving machine and a working machine in order to prevent an excessive torque from being transmitted to an engine from an output side when the engine is started.

The torque limiter is also called a torque limiter, is a component for connecting a driving machine and a working machine, and mainly plays a role in overload protection. When the required torque of the driving machine exceeds a set value due to overload or mechanical failure, the torque limiter limits the torque transmitted by the transmission system in a slipping mode; meanwhile, the motor and the reducer can be stopped by outputting signals, and the connection is automatically recovered after the overload condition disappears; by using a torque limiter, mechanical damage can be effectively prevented, thereby avoiding costly shutdown losses. In the existing design scheme of the hybrid engine, a combined structure of a split flywheel and a clutch/torque limiter is generally adopted for overload protection, but the combined structure has a large overall axial size, the requirement on the width of an engine compartment of the whole vehicle is very large during arrangement, and for a general compact vehicle type, the arrangement of the combined structure of the torque limiter is difficult.

Therefore, how to optimize the combined structure of overload protection in the hybrid engine, reduce the whole axial size of the combined structure, enable more small or compact vehicle types to be easily arranged, and solve the problem in the design of the existing hybrid engine.

Disclosure of Invention

In view of the above, the present invention provides an integrated torque limiter, which integrates a flywheel and the torque limiter to protect an overload of a hybrid engine; compared with the traditional combined structure, the torque limiter has smaller integral axial dimension and can be arranged on more types of vehicle models.

The utility model provides an integrated torque limiter, including the flywheel, friction disc driven part and the spacing dish of coaxial setting between engine and gearbox, the spacing dish has bulge loop portion and accommodation portion, the accommodation portion is used for holding friction disc driven part; after the friction plate driven part is arranged in the accommodating part of the limiting disc, the flywheel and the limiting disc are connected through a fastening piece to form a whole torque limiter.

Further, the convex ring portion of the stopper disk is formed by the stopper disk bulging inward in the axial direction on the outer circumference, and the accommodating portion is formed on the inner circumferential side of the convex ring portion.

Furthermore, a plurality of mounting holes for connecting fasteners are arranged on the convex ring part of the limiting disc along the circumference in the axial direction.

Furthermore, a plurality of through holes I which are arranged corresponding to the limiting disc mounting holes are arranged on the flywheel along the outer circumference in the axial direction.

Further, the friction plate driven member is provided with a connecting portion for connecting a member provided on the transmission side, on the transmission side.

Furthermore, the bottom of the limiting disc is provided with an avoiding hole for avoiding the connecting part of the friction plate and the driven part.

Further, the flywheel and the part arranged on the side of the engine are also connected through fasteners, the flywheel is provided with a plurality of through holes II connected with the part arranged on the side of the engine along the inner circumference in the axial direction, and the fasteners penetrate through the through holes II to connect and fix the flywheel and the part arranged on the side of the engine.

Furthermore, a plurality of avoiding holes corresponding to the positions of the through holes II in the flywheel are formed in the friction plate driven part, and the avoiding holes are used for avoiding fasteners for connecting the flywheel and the engine side part.

The beneficial effects of the utility model are that: the integrated torque limiter provided by the utility model integrates the flywheel and the torque limiter into a whole to form a new torque limiter, and compared with the traditional combined structure, the integrated torque limiter has smaller overall axial size and can be arranged on more types of vehicle models; the flywheel in the torque limiter is designed as a sheet metal stamping part, so that the axial size can be compressed while the assembly weight can be reduced; meanwhile, the torque limiter is assembled by adopting bolts, so that the torque limiter is convenient to maintain and disassemble.

Drawings

The invention will be further described with reference to the following figures and examples:

fig. 1 is a schematic structural view of a torque limiter according to the present invention;

fig. 2 is a cross-sectional view of the torque limiter of the present invention.

Fig. 3 is an exploded view of the torque limiter of the present invention.

Description of the reference numerals: 1-a bolt; 2-a flywheel; 3-inertia ring component; 4-friction plate driven part.

Detailed Description

As shown in the figures, the integrated torque limiter provided by the utility model comprises a flywheel 2, a friction plate driven part 4 and a limiting disc which are coaxially arranged between an engine and a gearbox, wherein the limiting disc is provided with a convex ring part and an accommodating part, and the accommodating part is used for accommodating the friction plate driven part 4; after the friction plate driven part 4 is arranged in the accommodating part of the limiting disc, the flywheel 2 and the limiting disc are connected through a fastening piece to form a whole torque limiter.

In the embodiment, the integrated torque limiter mainly comprises a flywheel 2, a friction plate driven part 4 and an inertia ring part 3 serving as a limiting disc, and is mainly used for connecting an engine and a hybrid box to realize power transmission of the engine and prevent the problem of shaft breakage faults of a gear shaft of the hybrid box and a generator caused by excessive impact; as shown in fig. 1 and 2, the engine is disposed outside the flywheel in the integrated torque limiter, and the hybrid case is disposed outside the inertia ring member 3; the flywheel 2, the friction plate driven part 4 and the inertia ring part 3 are coaxially arranged, so that the rotation coaxiality of the torque limiter in the working process is higher, and the stability is better; through being in the same place flywheel 2 and friction disc driven part 4 and inertia ring part 3 integration, adopted split type flywheel + clutch torque limiter's integrated configuration in having replaced traditional structure, make the torque limiter under the prerequisite that satisfies original function, can reduce axial dimensions by a wide margin, make the torque limiter can satisfy most motorcycle types arranging the in-process, use more extensively.

In the present embodiment, as shown in fig. 2 and 3, the inertia ring member 3 as a stopper disk is a disk-shaped member having a convex ring portion and an accommodating portion; the convex ring part is formed by the fact that the inertia ring part 3 protrudes towards the flywheel by a certain height along the outer circumference in the axial direction, the convex ring part is arranged on the outermost periphery of the inertia ring part 3, the protruding height can meet the requirements for containing the friction plate driven part 4 and ensuring the normal work of the friction plate driven part 4, and the size of the inner circumference side of the convex ring needs to be capable of installing the friction plate driven part 4; the accommodating part is a groove formed by the radial inner side of the convex ring part and the bottom of the limiting disc; when the inertia ring component 3 is fixedly connected with the flywheel 2, a cavity is formed between the groove of the inertia ring component 3 and the flywheel 2 body, and the friction plate driven component 4 can be placed in the cavity to normally operate.

In this embodiment, as shown in fig. 2 and 3, the convex ring portion of the inertia ring member 3 has a plurality of mounting holes for connecting fasteners arranged circumferentially in the axial direction; a plurality of through holes I which are arranged corresponding to the mounting holes of the inertia ring component 3 are arranged along the outer circumference of the flywheel 2 in the axial direction; the fastener is a bolt 1 commonly used in machine structure connection, and because the inertia ring component 3 and the flywheel 2 are both circular components, a positioning pin is also arranged for ensuring the coaxiality of the inertia ring component 3 and the flywheel 2; the inertia ring part 3 and the flywheel 2 are mainly positioned by pins and connected by bolts 1, and in order to reduce the influence on the friction plate driven part 4, the connection position of the inertia ring part 3 and the flywheel 2 is arranged on the outermost circumference of the torque limiter; therefore, a plurality of threaded holes and pin holes are formed on the convex ring part of the inertia ring part 3, the plurality of threaded holes are arranged at specified intervals in the circumferential direction, and the depth of the threaded hole can be made into a threaded through hole or a threaded bottom hole according to the use requirement; the same number of pin holes and through holes I as the inertia ring part 3 are arranged at the corresponding positions on the outermost round shaft of the flywheel, and the through holes I are holes for connecting the flywheel 2 and the inertia ring part 3 on the flywheel 2; the peripheries of the threaded hole, the pin hole and the through hole I are provided with specified wall thicknesses, so that the bolt and the pin are ensured to have enough strength when being fastened; the flywheel 2 and the inertia ring component 3 are assembled through bolts, so that the torque limiter can be assembled and disassembled more conveniently.

In the present embodiment, as shown in fig. 2 and 3 in combination, the friction plate driven member 4 is provided with a connecting portion for connecting members provided on the transmission side, on the side toward the transmission; the bottom of the inertia ring component 3 is provided with an avoidance hole for avoiding the connecting part of the friction plate driven component 4; because the torque limiter is mainly connected with parts of a driving machine and a working machine and plays a role in overload protection through the combination or separation of the friction plate driven part 4 and the flywheel 2, a connecting part is arranged between the friction plate driven part 4 and the gearbox; the connecting part is mainly connected with a driving shaft of a related part arranged on the side of the gearbox through a spline, so that the power transmission is realized; in order to avoid the connecting part of the friction plate driven part 4 and the working area arranged on the radial periphery of the connecting part, the bottom of the inertia ring part 3 is opened and avoided; the friction plate driven part 4 mainly utilizes the torque spring on the part to repeatedly stretch out and draw back, so that the friction plate driven part 4 is twisted, and the torque is attenuated through the twisting, so as to form overload protection, the technology belongs to the prior art, and is not described herein, therefore, the avoidance hole on the inertia ring part 3 is expanded to be arranged outside the working area of the torque spring of the friction plate driven part 4, but the bottom of the inertia ring part 3 is partially overlapped with the friction plate driven part 4; as shown in fig. 2 and 3, since the flywheel 2 and the inertia ring member 3 are coaxially arranged with the friction plate driven member 4, and the flywheel 2 and the inertia ring member 3 limit the friction plate driven member 4, the size of the overlapping intersection area of the bottom of the inertia ring member 3 and the friction plate driven member 4 can be set according to specific use requirements, but needs to meet the normal use of the friction plate driven member 4.

In this embodiment, as shown in fig. 2 and 3, the flywheel 2 and the component disposed on the engine side are also connected by a fastener, the flywheel 2 has a plurality of through holes ii arranged along the inner circumference in the axial direction, and the fastener passes through the through holes ii to connect and fix the flywheel and the component disposed on the engine side; a plurality of avoiding holes corresponding to the through holes II on the flywheel 2 are formed in the friction plate driven part 4, and the avoiding holes are used for avoiding fasteners for connecting the flywheel 2 and the engine side part; the flywheel 2 is connected and fixed with the inertia ring part 3 on the outermost circumference, and is also provided with a mounting hole connected with an engine side part in the central area, a fastener used by the mounting hole is also connected by using a bolt 1 and positioned by using a pin, and a through hole II is a hole on the flywheel 2 for connecting the flywheel 2 with the engine side part; the bolt on the through hole II is arranged in the central area of the flywheel 2, so that avoidance needs to be carried out at the corresponding position of the friction plate driven part 4, and avoidance hole processing is carried out on the friction plate driven part 4; the peripheries of the pin hole and the through hole II on the flywheel 2 are provided with the specified wall thickness, so that the bolt and the pin have sufficient strength during fastening; 6 avoidance holes are designed on the friction plate driven part 4 to ensure that the flywheel 2 and the engine side part are more convenient to assemble, and meanwhile, the torque limiter is ensured to be detachable for maintenance.

Finally, it is noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.

Claims

1. An integrated torque limiter, comprising: the clutch comprises a flywheel, a friction plate driven part and a limiting disc which are coaxially arranged between an engine and a gearbox, wherein the limiting disc is provided with a convex ring part and an accommodating part, and the accommodating part is used for accommodating the friction plate driven part; and after the friction plate driven part is arranged in the accommodating part of the limiting disc, the flywheel and the limiting disc are connected through a fastener to form a whole torque limiter.

2. The integrated torque limiter according to claim 1, wherein: the convex ring portion of the retainer disk is formed by the retainer disk protruding inward in the axial direction on the outer circumference, and the receiving portion is formed on the inner circumferential side of the convex ring portion.

3. The integrated torque limiter of claim 2, wherein: the convex ring part of the limiting disc is provided with a plurality of mounting holes for connecting fasteners along the circumferential arrangement in the axial direction.

4. The integrated torque limiter according to claim 3, wherein: and a plurality of through holes I which are arranged along the outer circumference of the flywheel in the axial direction and correspond to the limiting disc mounting holes are formed in the flywheel.

5. The integrated torque limiter of claim 1, wherein: the friction plate driven member is provided with a connecting portion facing the transmission for connecting a member provided on the transmission side.

6. The integrated torque limiter of claim 5, wherein: and an avoiding hole for avoiding the connecting part of the driven part of the friction plate is formed in the bottom of the limiting disc.

7. The integrated torque limiter according to claim 1, wherein: the flywheel and the component arranged on the side of the engine are also connected through fasteners, a plurality of through holes II connected with the component arranged on the side of the engine are arranged on the flywheel along the inner circumference in the axial direction, and the fasteners penetrate through the through holes II to connect and fix the flywheel and the component arranged on the side of the engine.

8. The integrated torque limiter of claim 7, wherein: and a plurality of avoiding holes corresponding to the positions of the through holes II on the flywheel are formed in the friction plate driven part, and the avoiding holes are used for avoiding fasteners for connecting the flywheel and the engine side part.