CN202176641U

CN202176641U - Bimetal layer brake drum with groove on inner ring

Info

Publication number: CN202176641U
Application number: CN2011202413829U
Authority: CN
Inventors: 张福燕; 张红艳; 林中龙
Original assignee: FUJIAN CHANGFENG AXLE MANUFACTURING Co Ltd
Current assignee: FUJIAN CHANGFENG AXLE MANUFACTURING Co Ltd
Priority date: 2011-07-08
Filing date: 2011-07-08
Publication date: 2012-03-28
Anticipated expiration: 2021-07-08

Abstract

The utility model discloses a bimetal layer brake drum with a groove on an inner ring, belongs to the improvement and design field of automotive brake drums, and solves the problems that the existing brake drum is poor in braking effect, safety and reliability, and short in service life. The brake drum includes the inner ring and an outer ring. The inner ring is provided with a sunk groove outside, the inner ring and the outer ring are molten together, the sunk groove can be a spiral or trapezoid groove, the material of the inner ring is gray pig iron, and the material of the outer ring is cast steel.

Description

Inner ring trough of belt double-metal layer brake drum

Technical field

The utility model relates to automobile brake drum and improves design, particularly a kind of double-metal layer brake drum of inner ring trough of belt.

Background technique

Automobile brake drum is the modal braking device of truck and large and medium bus because of its compact structure, braking force are big, also is the important assurance of vehicle safety travel.Along with the development of automotive engineering, automobile constantly develops to directions such as high speed, heavy duties, and frequent braking with this understanding is to the new challenge of proposition in working life of automobile brake drum.The fair brake drum of performance performance had satisfied not usage requirement gradually under low speed underloading condition in the past, mainly showed as clamping strap and produced tired pattern cracking---and be full of cracks is prone to cause the brake drum fracture.And in a single day brake drum in use cracking phenomena occurs, and the braking effect variation reduces working life greatly, and serious meeting makes braking failure, has a strong impact on running safety.The brake drum of existing most domestic manufacturer production; Be through outer embedding one deck steel ring after bad back machining shaping of casting homogenous material hair or the machining mostly; Brake drum phenomenon of rupture occurs mostly after the brake behind cracking, bring great potential safety hazard to automobile running.

The model utility content

The purpose of the utility model is the shortcoming that overcomes existing technology, provides a kind of reliability, Security good, high life, the automobile brake drum of processing easily.

For realizing above-mentioned purpose, the utility model adopts following technological scheme:

Inner ring trough of belt double-metal layer brake drum, it comprises inner ring and outer ring, and the said inner ring outside is provided with deep gouge, and inner ring and outer ring fuse into one.

Deep gouge on the inner ring outside can be spiral shell shape groove or dovetail groove, also can be to make inner ring and outer ring when cast, dissolve the deep gouge for other shape of one.

For improving the intensity and the toughness of braking effect and whole brake drum, the material selection gray cast iron of inner ring, the material selection cast steel or the magnesium iron of outer ring.

Because the utility model inner ring trough of belt double-metal layer brake drum is provided with deep gouge (like spiral shell shape groove or dovetail groove) at inner ring, in making the brake drum process, when the cast outer ring; Molten steel more easily and inner ring fuse into one; Thereby the Internal and external cycle that makes brake drum fuses into an integral body, and after the brake drum inner ring received friction to cause cracking phenomena, the outer ring of pouring molten steel made the brake drum body still keep certain structure and intensity; Solved brake drum cracking back forfeiture Braking efficiency; Car load continues the technical barrier of safety traffic, has prolonged the working life of brake drum, and makes also more convenient.

Description of drawings:

Below in conjunction with accompanying drawing the utility model is described further.

Fig. 1 is the double-metal layer brake drum structure schematic representation according to the inner ring trough of belt of the utility model proposition;

Fig. 2 is the front view of first embodiment's inner ring;

Fig. 3 is the side view of first embodiment's inner ring;

Fig. 4 is the front view of second embodiment's inner ring;

Fig. 5 is the side view of second embodiment's inner ring.

Each sign expression among the figure: 1. inner ring; 2. outer ring; 3. spiral shell shape groove; 4. dovetail groove

Embodiment

As shown in Figure 1, the double-metal layer brake drum of inner ring trough of belt comprises inner ring 1 and outer ring 2, is provided with spiral shell shape groove outside the inner ring like the double-metal layer brake drum of inner ring trough of belt among Fig. 2, the utility model shown in Figure 3 first embodiment.When brake drum was made, the gray cast iron circle that designs a braking surface was that brake drum inner ring 1 is guaranteed its braking effect, and cast steel is watered in outer ring 2 employings or magnesium iron shields.During the moulding of V method; Cover gray cast iron inner ring 1 is formed one with master mould on the core of mo(u)ld bottom half; Forming inner ring 1 through Pour Steel be gray cast iron, and outer ring 2 is the double-metal layer brake drum of the inner ring trough of belt of cast steel or magnesium iron, owing to inner ring 1 arranged outside spiral chute; When pouring into a mould outer ring 2 skins, molten steel more is prone to fuse into one with inner ring 1.Like this, the double-metal layer brake drum of inner ring trough of belt can not only be strengthened the body intensity of brake drum, makes brake drum internal layer thermal fatigue resistance and wear-resisting; Outer maintenance must toughness and intensity; Even after internal layer ftractures, the skin of molten steel or magnesium iron cast makes the brake drum body still keep certain structure and intensity, has solved the technical barrier of forfeiture Braking efficiency after brake drum ftractures, car load continuation safety traffic; Prolong the working life of brake drum, had remarkable economic efficiency.

Like Fig. 4, the utility model shown in Figure 5 second embodiment, the inner ring deep gouge also can be a dovetail groove.

The shape of inner ring deep gouge is not limited to above-mentioned spiral shell shape groove and the dovetail groove of introducing, also can be to make inner ring and outer ring when cast, dissolve deep gouge for other shape of one, and like tee-slot, circular groove etc.

Claims

1. inner ring trough of belt double-metal layer brake drum, it is characterized in that: it comprises inner ring [1] and outer ring [2], and said inner ring [1] outside is provided with deep gouge, and inner ring [1] and outer ring [2] fuse into one.

2. inner ring trough of belt double-metal layer brake drum as claimed in claim 1 is characterized in that said deep gouge is a spiral shell shape groove [3].

3. inner ring trough of belt double-metal layer brake drum as claimed in claim 1 is characterized in that said deep gouge is dovetail groove [4].

4. like claim 1 or claim 2 or the described inner ring trough of belt of claim 3 double-metal layer brake drum, the material that it is characterized in that inner ring [1] is a gray cast iron, and the material of outer ring [2] is cast steel or magnesium iron.