CN206918134U

CN206918134U - A kind of brake drum of crack resistence

Info

Publication number: CN206918134U
Application number: CN201720781417.5U
Authority: CN
Inventors: 杨上钦
Original assignee: Longyan Guihong Trading Co Ltd
Current assignee: Longyan Guihong Trading Co Ltd
Priority date: 2017-06-30
Filing date: 2017-06-30
Publication date: 2018-01-23
Anticipated expiration: 2027-06-30

Abstract

The utility model discloses a kind of brake drum of crack resistence, including brake drum body, and the brake drum body includes top surface and the face of cylinder circumferentially extended vertically downward along top surface；The face of cylinder internal face is provided with the spiral bar of multi-turn shape of threads, and dowel is laid between the spiral bar of adjacent turn；The spiral bar of the internal face Origin And Destination on the face of cylinder is linear-toroidal section.The spiral bar is incorporated on the face of cylinder of brake drum by the way of cast, the global facility being formed in one between the spiral bar of the brake drum and the face of cylinder of brake drum, the two will not be in the presence of coming off because of expanding with heat and contract with cold, ensure the stability of brake drum, the problems such as preventing brake drum cracking.

Description

A kind of brake drum of crack resistence

Technical field

It the utility model is related to brake drum technical field, more particularly to a kind of brake drum of crack resistence.

Background technology

Brake drum is one of critical piece of braking system in automobile running system, and brake-shoe, automobile system are provided with brake drum Brake-shoe expands outwardly in the case where actuating device effect when dynamic reaches braking action with brake drum friction, and brake drum is one end open knot Structure, in braking, brake-shoe easily cracks brake drum, so as to cause brake fade, vehicle safety is not ensured, is anti- Only brake drum cracks some and a circle is press-fitted on the cylindrical position of brake drum opening, plays a part of banding brake drum, this Method is an independent entirety because its brake drum is roused between body and circle, and brake drum is easily deviate from the lower circle that expands with heat and contract with cold.

Utility model content

The purpose of this utility model is, proposes that a kind of tensile strength is high, can prevent the brake drum of cracking, solves existing Banding brake drum is carried out using press-fitting circle scheme, brake drum is easily deviate from the lower circle that expands with heat and contract with cold, and brake drum easily ftractures The problem of.

To achieve these goals, technical scheme is used by the utility model：

A kind of brake drum of crack resistence, including brake drum body, the brake drum body are circumferential including top surface and along top surface The face of cylinder extended vertically downward；The face of cylinder internal face is provided with the spiral bar of multi-turn shape of threads, the spiral bar of adjacent turn Between be laid with dowel；The spiral bar of the internal face Origin And Destination is linear-toroidal section.

Wherein, the spiral bar and dowel are connected with each other and reticulated, parallel between adjacent dowel and equidistant arrangement.

Wherein, the dowel is welded on spiral bar.

Wherein, the spiral bar is the steel fibre reinforced of spiral lamination.

The beneficial effects of the utility model are：

First, the spiral bar is incorporated on the face of cylinder of brake drum by the way of cast, the spiral bar of the brake drum The global facility being formed in one between the face of cylinder of brake drum, the two will not be in the presence of coming off because of expanding with heat and contract with cold, Ensure the stability of brake drum, the problems such as preventing brake drum cracking.

2nd, for the spiral bar using the spiral bar of the spiral lamination of steel fibre, it is good that its special material make it that brake drum possesses Good heated ability, in the event of high temperatures brake drum possess good ductility, it is not easy to there is strain cracking.

3rd, dowel, the whole spiral bar Stability Analysis of Structures of formation so that brake drum exists are arranged between the spiral bar of adjacent turn The stress equalization of spiral bar all directions when stress, ensure ductility of the brake drum along face of cylinder circumferencial direction and along cylinder The ductility of face axial direction, the stable performance of brake drum is ensured, prevents problem of Cracking.

Brief description of the drawings

Fig. 1 is the structural representation of the utility model brake drum body；

Fig. 2 is the structural representation of the utility model spiral bar；

Fig. 3 is the structural representation of the utility model casting mechanism；

Fig. 4 is the structural representation of model cavity on the utility model；

Fig. 5 is the structural representation of the utility model drag shell；

Fig. 6 is the structural representation that the utility model fixes spiral bar；

Fig. 7 is the structural representation of the utility model mould assembling cast.

Reference is：

Brake drum body -1, top surface -11, the face of cylinder -12, stiffening ring -13, dowel -14, spiral bar -15, linear-toroidal Section -151, plain bumper -21, pattern drawing machine -22, upper model cavity -23, the brake drum model space one -231, the brake drum model space one Internal face -232, drag shell -24, drag shell outside wall surface -241, running channel -25, the brake drum model space -26, lug -27.

Embodiment

The utility model is described in detail below with reference to embodiment shown in the drawings.But these embodiment party Formula is not intended to limit the utility model, structure that one of ordinary skill in the art is made according to these embodiments, method or Conversion functionally is all contained in the scope of protection of the utility model.

As shown in fig.1, a kind of brake drum of crack resistence is provided in an embodiment of the present utility model, including brake drum Body, the brake drum body 1 include top surface 11 and the face of cylinder 12 circumferentially extended vertically downward along top surface 11；The face of cylinder 12 internal faces are provided with the spiral bar 15 of multi-turn shape of threads, and dowel 14 is laid between the spiral bar 15 of adjacent turn；In described The spiral bar 15 of wall Origin And Destination is linear-toroidal section 151.Stiffening ring 13, institute can be set in the outside wall surface on the face of cylinder 12 State the intensity that stiffening ring 13 strengthens brake drum so that the performance of brake drum is more stable.

As shown in fig.2, in the improvement embodiment of above-mentioned embodiment, the spiral bar 15 interconnects with the phase of dowel 14 It is connected into netted, parallel between adjacent dowel 14 and equidistant arrangement.Dowel 14 is arranged between the spiral bar 15 of adjacent turn, and It is parallel to each other between each dowel 14 and equidistantly arranges, using which, the Stability Analysis of Structures of whole spiral bar 15 of formation, makes Stress equalization derived from dynamic drum all directions of spiral bar 15 when stress, ensure brake drum along the circumferencial direction of the face of cylinder 12 Ductility and the ductility along the axial direction of the face of cylinder 12, the stable performance of brake drum is ensured, cracking is further prevented and asks Topic.The dowel 14 can use the various modes such as binding, welding to be connected on spiral bar 15, the preferable side using welding Formula.The spiral bar 15 preferably uses the steel fibre reinforced of spiral lamination, and it is good make it that brake drum possesses using the special material Good heated ability, in the event of high temperatures brake drum still possess good ductility, it is not easy to there is strain cracking.

A kind of manufacture method of the brake drum of described crack resistence is provided in the embodiment of the utility model one, including it is as follows Step：

Spiral bar 15 is processed, the spiral bar 15 of multi-turn shape of threads, the spiral of adjacent turn are formed by required size spiral reinforcement Dowel 14 is connected between muscle 15；Can be by the way of binding connection or welding between the dowel 14 and spiral bar 15 Connection.Spiral bar 15 and dowel 14 are interconnected to form netted structure, are preferable to provide parallel between adjacent dowel 14 And equidistantly arrangement, the uniform force of the guarantee all directions of spiral bar 15.

Cast brake drum model, upper model cavity 23 and drag shell 24 cast using the close mode of vacuum respectively, it is described on The internal face of model cavity 23 is identical with the outside wall surface of brake drum, the outside wall surface of the drag shell 24 and the internal face phase of brake drum Together, the brake drum model space 26 of indwelling one after the upper model cavity 23 mutually fastens with drag shell 24；Refering to shown in figure 4, institute Show and the brake drum model space 1 is formed in model cavity 23, the internal face 232 of the brake drum model space one and brake drum Outside wall surface is identical；Refering to shown in figure 5, the drag shell outside wall surface 241 is identical with the internal face of brake drum.Upper model cavity 23 with Drag shell phase forms a brake drum model space 26 after mutually fastening, refering to shown in figure shown in 3, Fig. 7.

Fixed spiral bar 15, iron nail of being burn-on in the one end of spiral bar 15, the iron nail is fixed on drag shell, and by spiral shell Rotation muscle 15 screws the outside wall surface in drag shell, refering to shown in figure 6.The step causes brake drum spiral bar 15 when cast It can be embedded in the face of cylinder 12 of brake drum, the two forms integrally formed structure.

Mould assembling is poured into a mould, and upper model cavity 23 and the drag shell for being fixed with spiral bar 15 are snapped together, toward the braking Melted gray cast iron molten iron is poured into a mould in the drum model space 26, refering to shown in Fig. 3, Fig. 7.

In a preferred embodiment, the processing spiral bar 15 is before brake drum model is cast, or the processing Spiral bar 15 is after brake drum model is cast.

In the improvement embodiment of above-mentioned embodiment, as shown in fig.3, carrying out mould assembling cast, institute using casting mechanism Stating casting mechanism includes plain bumper 21, and the drag shell for being fixed with spiral bar 15 is fixed on the plain bumper 21, the upper mould Die cavity 23 is fastened on outside the drag shell；Running channel 25 is provided between adjacent upper model cavity 23, the running channel 25 guides ash Molten cast iron enters the brake drum model space 26.

In another preferred embodiment, as shown in fig.3, the casting mechanism also includes pattern drawing machine 22, it is described on Two relative sides of model cavity 23 are provided with lug 27, and the pattern drawing machine 22 is located at the bottom of lug 27, and the pattern drawing machine 22 drives institute Lug 27 is stated to move up.

It should be appreciated that although the present specification is described in terms of embodiments, not each embodiment only includes one Individual independent technical scheme, this narrating mode of specification is only that those skilled in the art will should say for clarity For bright book as an entirety, the technical scheme in each embodiment may also be suitably combined to form those skilled in the art can With the other embodiment of understanding.

The a series of tool described in detail only for feasibility embodiment of the present utility model of those listed above Body illustrates that they are simultaneously not used to limit the scope of protection of the utility model, all to be made without departing from the utility model skill spirit Equivalent implementations or change should be included within the scope of protection of the utility model.

Claims

A kind of 1. brake drum of crack resistence, it is characterised in that：Including brake drum body（1）, the brake drum body（1）Including top Face（11）And along top surface（11）The circumferential face of cylinder extended vertically downward（12）；The face of cylinder（12）Internal face is provided with multi-turn The spiral bar of shape of threads（15）, the spiral bar of adjacent turn（15）Between be laid with dowel（14）；The face of cylinder（12）It is interior The spiral bar of wall Origin And Destination（15）For linear-toroidal section（151）.
2. the brake drum of crack resistence according to claim 1, it is characterised in that：The spiral bar（15）With dowel（14） Interconnection reticulates, adjacent dowel（14）Between parallel and equidistant arrangement.
3. the brake drum of crack resistence according to claim 1, it is characterised in that：The dowel（14）It is welded in spiral bar （15）On.
4. the brake drum of crack resistence according to claim 1, it is characterised in that：The spiral bar（15）For the steel of spiral lamination Fiber steel reinforcing.