CN111594558A

CN111594558A - Surface-strengthened nodular cast iron brake disc

Info

Publication number: CN111594558A
Application number: CN202010505959.6A
Authority: CN
Inventors: 胡宗道
Original assignee: Anhui Province Chaohu Huihuang Foundry Co ltd
Current assignee: Anhui Province Chaohu Huihuang Foundry Co ltd
Priority date: 2020-06-05
Filing date: 2020-06-05
Publication date: 2020-08-28

Abstract

The invention discloses a surface-strengthened nodular cast iron brake disc, which comprises a brake disc body and a cylinder body, wherein the brake disc body and the cylinder body are coaxially arranged, the brake disc body comprises a first disc body and a second disc body, the first disc body is connected with the circumferential outer side wall of the cylinder body, the middle part of the second disc body is provided with a central hole, the aperture of the central hole is larger than the diameter of the cylinder body, the tail part of the cylinder body axially extends outwards and penetrates through the central hole, the end surface of the tail part of the cylinder body is provided with teeth, the head part of the cylinder body is connected with an installation disc, the installation disc is circumferentially provided with installation holes, and a fixing part is connected; the brake disc is reasonable in structural design, the overall strength of the brake disc is improved, the structural strength of the device is further improved by using the reinforcing ribs and the conical cylinders, the use safety and reliability are greatly improved, the brake disc can bear impact force and strong abrasion at the same time, and the brake disc has high cost performance.

Description

Surface-strengthened nodular cast iron brake disc

Technical Field

The invention relates to the technical field of brake discs, in particular to a surface-strengthened nodular cast iron brake disc.

Background

The brake disc, in short, is a circular disc which also rotates when the vehicle is moving. The brake caliper clamps the brake disc to generate braking force, and when the brake is stepped, the brake caliper clamps the brake disc to play a role in reducing speed or stopping. The brake disc has good braking effect and is easier to maintain than a drum brake. The brake disc is driven by the brake fluid, namely hydraulic fluid, in the process of driving the piston, namely the piston is driven by the brake fluid, namely the hydraulic fluid, which is boosted by an engine.

The brake comprises a disk brake, a drum brake and an air brake, and many old vehicles are front disks and rear drums. The front and the rear of the vehicle are disk brakes. Because the heat dissipation of the disc brake is better than that of the drum brake, the disc brake is not easy to generate heat recession in a high-speed braking state, and the high-speed braking effect is good. But at low speed cold brake, the braking effect is inferior to drum brake. The price is more expensive than the drum brake. Therefore, many medium and high-grade cars adopt full disc brakes, while ordinary cars adopt front disc and rear drum, and drum brakes are still adopted at relatively low speed and in trucks and buses with large braking force.

The brake disc is divided into a solid brake disc and a ventilation disc according to the structure. The solid brake disc is a metal disc for braking and has no special structure. The ventilation disc is divided into two forms, namely a scribing disc and a perforated disc, and the two treatment modes are used for improving the cooling performance of the brake disc, reducing the thermal attenuation degree of the brake disc and providing better braking capability.

Some transport vehicles have larger inertia during running due to larger load, the requirement on the performance of a brake disc is higher, and the common brake disc is easy to cause insufficient thickness after long-term abrasion to influence the braking effect.

Disclosure of Invention

The invention aims to overcome the problems in the prior art and provide a surface-strengthened nodular cast iron brake disc. In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme:

the utility model provides a surface-strengthened nodular cast iron brake disc, includes brake disc disk body and cylinder, brake disc disk body and cylinder set up with the axle center, the brake disc disk body includes first disk body and second disk body, the circumference lateral wall of first disk body coupling cylinder, the centre bore has been seted up at the middle part of second disk body, the aperture of centre bore is greater than the diameter of cylinder, the afterbody axial of cylinder outwards extends and passes the centre bore, the afterbody terminal surface of cylinder is equipped with the tooth, the head of cylinder is connected with the mounting disc, the mounting hole has been seted up to circumference on the mounting disc, be connected with the fixed part between first disk body and the second disk body.

Preferably, in the surface-strengthened nodular cast iron brake disc, the fixed part includes a plurality of groups of arcs, a plurality of groups the arc is along circumference equipartition, and is adjacent two sets of form the wind channel between the arc, the last lower terminal symmetry of arc is provided with the step face, the lower surface of first disk body and the upper surface symmetry of second disk body are equipped with the spacing groove, the step face stretches into the spacing inslot, through bolt fixed connection between first disk body and the second disk body, the externally mounted of bolt has the swivel nut, the both ends at the arc are installed in the swivel nut gomphosis.

Preferably, in the surface-strengthened ductile cast iron brake disc, an included angle between the outer wall of the cylinder and the axis of the cylinder is greater than or equal to 0.5 degrees and less than or equal to 2 degrees.

Preferably, in the surface-strengthened ductile cast iron brake disc, a conical cylinder is connected between the cylinder and the first disc, an included angle between a bus of the conical cylinder and an axis of the cylinder is 35 degrees, and a plurality of groups of reinforcing ribs are connected between an inner wall of the conical cylinder and an outer wall of the cylinder.

Preferably, in the surface-strengthened ductile cast iron brake disc, the number of the reinforcing ribs is three, and the three groups of reinforcing ribs are uniformly distributed along the circumferential direction.

Preferably, in the surface-strengthened ductile cast iron brake disc, the first disc body and the second disc body are both made of ductile cast iron materials, the thickness of the first disc body is the same as that of the second disc body, and the diameter of the first disc body is the same as that of the second disc body.

Preferably, in the surface-strengthened ductile cast iron brake disc, the upper end surface of the first disc body and the lower end surface of the second disc body are both connected with a composite strengthening layer, the composite strengthening layer is formed by mixing hard ceramic particles, a binder and a permeation enhancer, and the thickness of the composite strengthening layer is 3 mm.

Preferably, in the surface-strengthened ductile cast iron brake disc, the upper end surface of the first disc body and the lower end surface of the second disc body are in a sawtooth shape along the circumferential direction, and the end surface of the composite strengthening layer close to the disc body of the brake disc is also in a sawtooth shape.

The invention has the beneficial effects that:

1. according to the structural design, the brake disc is assembled by adopting the double disc bodies, ventilation and heat dissipation are carried out by utilizing the air channels between the adjacent arc-shaped plates, the arc-shaped plates are matched with the limiting grooves by utilizing the step surfaces and are fastened by the bolts, the overall strength of the brake disc is improved, the structural strength of the device is further improved by utilizing the reinforcing ribs and the conical cylinder, and the use safety and reliability are greatly improved;

2. the first disc body and the second disc body are made of nodular cast iron materials, the strength is high, the hardness is further improved by using hard ceramic particles in the composite strengthening layer, and the hard ceramic particles can become a good wear-resistant hard phase after being compounded on the working surface of the brake disc, so that the service life of the brake disc is prolonged, and after the surface is locally strengthened in a composite mode, the brake disc has the strength and the toughness of the nodular cast iron and the high hardness and the high wear resistance of the ceramic hard phase, can bear impact force and strong wear at the same time, and has high cost performance.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is an overall block diagram of the present invention;

FIG. 2 is a schematic view of a portion of the structure at A in the present invention;

fig. 3 is a schematic view of the position distribution of the arc-shaped plates in the invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

Please refer to fig. 1-3, the present embodiment is a surface-strengthened nodular cast iron brake disc, which includes a brake disc body and a cylinder 1, the brake disc body and the cylinder 1 are coaxially disposed, the brake disc body includes a first disc body 2 and a second disc body 3, the first disc body 2 is connected to the circumferential outer sidewall of the cylinder 1, a central hole 4 is disposed in the middle of the second disc body 3, the aperture of the central hole 4 is larger than the diameter of the cylinder 1, the tail end of the cylinder 1 axially extends outwards and passes through the central hole 4, the tail end surface of the cylinder 1 is provided with teeth, the head of the cylinder 1 is connected with a mounting disc 5, a mounting hole 6 is circumferentially disposed on the mounting disc 5, and a fixing portion 7 is connected between the first disc body 2 and the second disc body.

Example two

This embodiment is a surface strengthening's nodular cast iron brake disc, including brake disc disk body and cylinder 1, brake disc disk body and 1 coaxial axle center setting of cylinder, the brake disc disk body includes first disk body 2 and second disk body 3, the circumference lateral wall of cylinder 1 is connected to first disk body 2, centre bore 4 has been seted up at the middle part of second disk body 3, the aperture of centre bore 4 is greater than the diameter of cylinder 1, the afterbody axial of cylinder 1 outwards extends and passes centre bore 4, the afterbody terminal surface of cylinder 1 is equipped with the tooth, the head of cylinder 1 is connected with mounting disc 5, circumference has seted up mounting hole 6 on mounting disc 5, be connected with fixed part 7 between first disk body 2 and the second disk body 3.

The fixing portion 7 comprises a plurality of groups of arc-shaped plates 701, the groups of arc-shaped plates 701 are uniformly distributed along the circumferential direction, an air duct 702 is formed between every two adjacent groups of arc-shaped plates 701, step surfaces 703 are symmetrically arranged at the upper end and the lower end of each arc-shaped plate 701, limiting grooves 704 are symmetrically arranged on the lower surface of the first disc body 2 and the upper surface of the second disc body 3, the step surfaces 703 extend into the limiting grooves 704, the first disc body 2 and the second disc body 3 are fixedly connected through bolts 705, threaded sleeves 706 are arranged on the outer portions of the bolts 705, and the threaded sleeves 706 are embedded at the two ends of the arc-.

The included angle between the outer wall of the cylinder 1 and the axis of the cylinder 1 is more than or equal to 0.5 degree and less than or equal to 2 degrees.

Be connected with a toper section of thick bamboo 8 between cylinder 1 and the first dish body 2, the contained angle between the generating line of a toper section of thick bamboo 8 and the axis of cylinder 1 is 35 degrees, is connected with a plurality of groups strengthening rib 801 between the inner wall of a toper section of thick bamboo 8 and the outer wall of cylinder 1.

The number of the reinforcing ribs 801 is three, and the three groups of reinforcing ribs 801 are uniformly distributed along the circumferential direction.

In this embodiment, the brake disc adopts the equipment of two disk bodies to form, and the axial equipartition has multiunit arc 701 between first disk body 2 and the second disk body 3, utilizes wind channel 702 between the adjacent arc 701 can ventilate the heat dissipation, and arc 701 utilizes step face 703 and spacing groove 704 cooperation, fastens through bolt 705 for brake disc bulk strength is high, utilizes the structural strength that strengthening rib 801 and a toper section of thick bamboo 8 further improve the device, has improved safety in utilization and reliability greatly.

EXAMPLE III

The first tray body 2 and the second tray body 3 are both made of nodular cast iron materials, the thickness of the first tray body 2 is the same as that of the second tray body 3, and the diameter of the first tray body 2 is the same as that of the second tray body 3.

The upper end surface of the first tray body 2 and the lower end surface of the second tray body 3 are both connected with a composite reinforcing layer 9, the composite reinforcing layer 9 is formed by mixing hard ceramic particles, a binder and a permeation aid, and the thickness of the composite reinforcing layer 9 is 3 mm.

The upper end surface of the first disc body 2 and the lower end surface of the second disc body 2 are in a sawtooth shape along the circumferential direction, and the end surface of the composite strengthening layer 9 close to the brake disc body is also in a sawtooth shape.

In this embodiment, the first disc body 2 and the second disc body 3 are both made of nodular cast iron, the strength is high, the hardness is further improved by using hard ceramic particles in the composite strengthening layer 9, after the hard ceramic particles are compounded on the working surface of the brake disc, the brake disc can become a good wear-resistant hard phase, the service life of the brake disc is prolonged, after the surface is locally compounded and strengthened, the brake disc has the strength and toughness of nodular cast iron, the high hardness and high wear resistance of the ceramic hard phase, the brake disc can simultaneously bear impact force and strong wear, the cost performance is high, the composite strengthening layer 9 and the brake disc are attached through a zigzag design, the separation can be effectively avoided, and the service life of the device is prolonged.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. The surface-strengthened nodular cast iron brake disc is characterized in that: including brake disc disk body and cylinder (1), brake disc disk body and cylinder (1) set up with the axle center, the brake disc disk body includes first disk body (2) and second disk body (3), the circumference lateral wall of cylinder (1) is connected in first disk body (2), centre bore (4) have been seted up at the middle part of second disk body (3), the aperture of centre bore (4) is greater than the diameter of cylinder (1), the afterbody axial of cylinder (1) outwards extends and passes centre bore (4), the afterbody terminal surface of cylinder (1) is equipped with the tooth, the head of cylinder (1) is connected with mounting disc (5), mounting hole (6) have been seted up to circumference on mounting disc (5), be connected with fixed part (7) between first disk body (2) and second disk body (3).

2. The surface-strengthened ductile iron brake disc of claim 1, wherein: fixed part (7) include a plurality of groups arc (701), a plurality of groups arc (701) are along circumference equipartition, and adjacent two sets of form wind channel (702) between arc (701), the last lower terminal symmetry of arc (701) is provided with step face (703), the lower surface of first disk body (2) and the upper surface symmetry of second disk body (3) are equipped with spacing groove (704), step face (703) stretch into in spacing groove (704), through bolt (705) fixed connection between first disk body (2) and second disk body (3), the externally mounted of bolt (705) has swivel nut (706), the both ends at arc (701) are installed in swivel nut (706) gomphosis.

3. The surface-strengthened ductile iron brake disc of claim 1, wherein: the included angle between the outer wall of the cylinder (1) and the axis of the cylinder (1) is more than or equal to 0.5 degree and less than or equal to 2 degrees.

4. The surface-strengthened ductile iron brake disc of claim 1, wherein: be connected with a toper section of thick bamboo (8) between cylinder (1) and first disk body (2), the contained angle between the generating line of a toper section of thick bamboo (8) and the axis of cylinder (1) is 35 degrees, be connected with a plurality of groups strengthening rib (801) between the inner wall of a toper section of thick bamboo (8) and the outer wall of cylinder (1).

5. The surface-strengthened ductile iron brake disc of claim 4, wherein: the number of the reinforcing ribs (801) is three, and the reinforcing ribs (801) are uniformly distributed along the circumferential direction.

6. The surface-strengthened ductile iron brake disc of claim 1, wherein: the first tray body (2) and the second tray body (3) are made of nodular cast iron materials, the thickness of the first tray body (2) is the same as that of the second tray body (3), and the diameter of the first tray body (2) is the same as that of the second tray body (3).

7. The surface-strengthened ductile iron brake disc of claim 1, wherein: the upper end surface of the first tray body (2) and the lower end surface of the second tray body (3) are both connected with a composite strengthening layer (9), the composite strengthening layer (9) is formed by mixing hard ceramic particles, a binder and a permeation aid, and the thickness of the composite strengthening layer (9) is 3 mm.

8. The surface-strengthened ductile iron brake disc of claim 1, wherein: the upper end face of the first disc body (2) and the lower end face of the second disc body (2) are in a sawtooth shape along the circumferential direction, and the end face, close to the brake disc body, of the composite strengthening layer (9) is also in a sawtooth shape.