CN203335728U

CN203335728U - Engine flywheel

Info

Publication number: CN203335728U
Application number: CN2013203923014U
Authority: CN
Inventors: 安艳霞; 余锦海; 蒋一丹; 李玉霞; 李文静
Original assignee: Guangxi Yuchai Machinery Co Ltd
Current assignee: Guangxi Yuchai Machinery Co Ltd
Priority date: 2013-07-03
Filing date: 2013-07-03
Publication date: 2013-12-11
Anticipated expiration: 2023-07-03

Abstract

The utility model discloses an engine flywheel which comprises a disc-shaped flywheel body. One end face of the flywheel body is provided with a protruding portion used for being connected with a flange plate at the rear end of an engine crankshaft, and the other end face of the flywheel is provided with a ring-shaped friction face used for being combined with a clutch. The outer edge of the friction face is provided with a flywheel rabbet of a sleeve shape. The axial direction of the flywheel rabbet extends outwards from the end of the flywheel body. The flywheel rabbet is provided with at least one heat-dissipation window. According to the engine flywheel, the heat-dissipation window on the flywheel rabbet is used for dissipating heat of the clutch, a series of hidden dangers caused by poor heat dissipation of the clutch can be effectively eliminated, the transmission efficiency of the control portion of the clutch is improved, abrasion of a friction piece in the early stage is lowered, the weight of the flywheel is reduced, and operation loads of a vehicle are lowered.

Description

Engine flywheel

Technical field

The utility model relates to engine technology, relates in particular to a kind of engine flywheel.

Background technique

As shown in Figure 1, existing engine flywheel, this flywheel comprises flywheel body 1 in the form of annular discs, flywheel body one end face 2 is connected with engine crankshaft rear end flange plate, other end has one in the form of a ring and the rubbing surface 3 for being combined with clutch, rubbing surface 3 outer rims have flywheel seam 4, the flywheel seam is whole circle cylindrical sleeve, rubbing surface 3 is unfavorable for the clutch heat radiation after clutch is combined, the darker situation of flywheel seam particularly, and the enough words flywheel of intensity and rotary inertia is too heavy, increases complete vehicle weight and cost.

The clutch heat radiation is bad, will reduce the transmission efficiency of clutch control part, when serious, may cause separation not thorough, causes the premature wear of friction plate, also can cause the shift of transmission difficulty.

The model utility content

The utility model is in order to overcome defect in above-mentioned prior art, a kind of engine flywheel is provided, for overcoming defect of the prior art, accelerated the heat radiation of clutch under the working state, improve the transmission efficiency of clutch control part and reduced the premature wear of friction plate.

For realizing above-mentioned model utility purpose, the utility model provides a kind of engine flywheel, this flywheel comprises flywheel body in the form of annular discs, described flywheel body one end face has a lug boss for being connected with engine crankshaft rear end flange plate, other end has one in the form of a ring and the rubbing surface for being combined with clutch, described rubbing surface outer rim has the flywheel seam, described flywheel seam is sleeve-shaped, and it axially stretches out from the flywheel body, on described flywheel seam, there is at least one thermal window.By the thermal window be arranged on the flywheel seam, clutch is dispelled the heat, efficient solution is except the poor a series of hidden danger that cause of clutch heat radiation situation, and improved the transmission efficiency of clutch control part, reduced the premature wear of friction plate; Alleviate flywheel weight simultaneously, reduced the running load of car load.

In technique scheme, described thermal window is opening slot, and the opening end of described opening slot is towards an end at rubbing surface place.Increase the thermal window area, improved radiating efficiency.

In technique scheme, described opening slot is rectangular, semicircle, half elliptic, trapezoidal or triangle.Be easy to processing, reduced processing cost.

In technique scheme, described thermal window is a plurality of, and is distributed on the flywheel seam.Balance and the stationarity of rotating have been guaranteed.

Compared with prior art, the utlity model has following beneficial effect:

1, there is thermal window on the flywheel seam in the utility model, after flywheel seam and clutch are installed, for clutch provides heat dissipation channel, effectively accelerated the heat radiation of clutch, greatly reduce reduction because of the bad clutch control part transmission efficiency caused of clutch heat radiation, separate thoroughly, the generation of the situations such as the premature wear of friction plate and shift of transmission difficulty, improved the transmission efficiency of clutch control part and reduced the premature wear of friction plate;

2, when the flywheel seam is darker, enough in intensity and rotary inertia, greatly reduce the flywheel own wt, reduced complete vehicle weight and car load running load.

The accompanying drawing explanation

The stereogram that Fig. 1 is prior art;

The stereogram of the embodiment's that Fig. 2 provides for the utility model flywheel;

The sectional view that Fig. 3 is Fig. 2.

Mark the following drawings mark thereon by reference to the accompanying drawings:

1-flywheel body, 2-flywheel body one end face, 2a-lug boss, 3-rubbing surface, 4-flywheel seam, 5-thermal window, 6-the first mounting hole, 7-the second mounting hole.

Embodiment

Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, but is to be understood that protection domain of the present utility model is not subject to the restriction of embodiment.

As shown in Figure 2 and Figure 3, the utility model embodiment provides a kind of engine flywheel, this flywheel comprises flywheel body 1 in the form of annular discs, flywheel body one end face 2 has a lug boss 2a for being connected with engine crankshaft rear end flange plate, other end has one in the form of a ring and the rubbing surface 3 for being combined with clutch, rubbing surface 3 outer rims have flywheel seam 4, flywheel seam 4 is sleeve-shaped, and it axially stretches out from this end of flywheel body, there is at least one thermal window 5 on flywheel seam 4.

During use, by the first mounting hole 6 be located on flywheel seam 4, with clutch, be fixedly connected with, by the second mounting hole 7 be located on lug boss 2a, with engine crankshaft rear end flange plate, be fixedly connected with, during braking, the friction plate of clutch and rubbing surface 3 combinations, there is thermal window 5 on flywheel seam 4 in the utility model, for clutch provides heat dissipation channel, effectively accelerated the heat radiation of clutch, greatly reduce the reduction because of the bad clutch control part transmission efficiency caused of clutch heat radiation, separate not thorough, the generation of the situations such as the premature wear of friction plate and shift of transmission difficulty, improve the transmission efficiency of clutch control part and reduced the premature wear of friction plate, when the flywheel seam is darker, enough in intensity and rotary inertia, greatly reduce the flywheel own wt, reduced complete vehicle weight and car load running load.Thermal window in the present embodiment can be for inwall the hole of closed form, can be also the inwall groove that is open state, and internal face is arbitrary shape, at this, does not limit.

As shown in Figure 2 and Figure 3, as the improvement further of above-described embodiment, thermal window 5 is opening slot, and the opening end of opening slot is towards an end at rubbing surface 3 places.Opening slot avoids being located at the first mounting hole 6 on flywheel seam 4 end faces, and with respect to the hole of inwall closed form, the thermal window of opening slot shape has increased the thermovent area, has improved radiating efficiency.Opening slot is rectangular, semicircle, half elliptic, trapezoidal or triangle.Be easy to processing, reduced processing cost.

In order to have guaranteed balance and the stationarity of rotating, thermal window 5 is a plurality of, and is distributed on the flywheel seam.

Above disclosed be only several specific embodiment of the present utility model, still, the utility model is not limited thereto, the changes that any person skilled in the art can think of all should fall into protection domain of the present utility model.

Claims

1. an engine flywheel, this flywheel comprises flywheel body in the form of annular discs, it is characterized in that, described flywheel body one end face has a lug boss for being connected with engine crankshaft rear end flange plate, other end has one in the form of a ring and the rubbing surface for being combined with clutch, and described rubbing surface outer rim has the flywheel seam, and described flywheel seam is sleeve-shaped, and it axially stretches out from the flywheel body, on described flywheel seam, there is at least one thermal window.

2. engine flywheel according to claim 1, is characterized in that, described thermal window is opening slot, and the opening end of described opening slot is towards an end at rubbing surface place.

3. engine flywheel according to claim 2, is characterized in that, described opening slot is rectangular, semicircle, half elliptic, trapezoidal or triangle.

4. according to arbitrary described engine flywheel in claims 1 to 3, it is characterized in that, described thermal window is a plurality of, and is distributed on the flywheel seam.