Wheel type brake disc structure

Abstract

The utility model discloses a wheel type brake disc structure which comprises two disc bodies symmetrically fixed to the two axial sides of a wheel. The locking mechanism is used for fixing the two disc bodies to the wheel and comprises a plurality of locking assemblies arranged in the circumferential direction of the disc bodies at intervals. The locking assembly comprises a locking piece, a nut and two sleeves, wherein the locking piece is arranged in the wheel and the two disc bodies in a penetrating mode, the nut locks the locking piece, and the two sleeves are arranged on the locking piece in a sleeving mode and abut against the two disc bodies. The sleeve comprises a first sleeve body located in the middle and two second sleeve bodies symmetrically arranged at the two axial ends of the first sleeve body, and the outer diameter of each second sleeve body is larger than that of the first sleeve body. According to the wheel type brake disc structure, the surface stress of the disc body can be reduced, and the structural strength is improved.

Description

TECHNICAL FIELD

[0001] The utility model discinate brake device technical field, especially relate to a wheel type brake disc structure. BACKGROUND

[0002] The brake disc is usually installed on the wheel hub of the wheel and rotates synchronously with the wheel. In order to facilitate disassembly and replacement of the brake disc, the brake disc is usually fixed on the wheel by bolts. After the bolts are fastened to the wheel, the brake disc often bears a large stress under the action of braking force, thermal load and the like during braking of the vehicle, resulting in failure of the brake disc. UTILITY MODEL CONTENTS

[0003] The utility model aims at providing a wheel type brake disc structure, which can reduce surface stress of a disc body and improve structural strength.

[0004] Based on the above problems, the utility model provides a technical scheme:

[0005] The wheel type brake disc structure comprises:

[0006] Two disc bodies, which are symmetrically fixed on both sides of the axial direction of the wheel;

[0007] A locking mechanism is used for fixing the two disc bodies on the wheel and comprises a plurality of locking assemblies arranged at intervals in the circumferential direction of the disc body. The locking assembly comprises a locking piece penetrating the wheel and the two disc bodies, a nut locking the locking piece, and two sleeves abutting against the two disc bodies and sleeved on the locking piece. The sleeve comprises a first sleeve body located in the middle and two second sleeve bodies symmetrically arranged at both ends of the axial direction of the first sleeve body. The outer diameter of the second sleeve body is greater than that of the first sleeve body.

[0008] In one of the embodiments, the disc body comprises a ring body and a plurality of heat dissipation ribs arranged at intervals in the circumferential direction of the ring body. The middle part of part of the heat dissipation ribs is provided with a positioning table for the locking piece to penetrate. The end face of the positioning table and the heat dissipation rib close to the wheel are located on the same plane.

[0009] In one of the embodiments, the locking piece is a bolt.

[0010] In one of the embodiments, the positioning table is provided with a first through hole for the locking piece to penetrate and a mounting groove in communication with the first through hole for mounting the locking piece. The wheel is provided with a second through hole for the locking piece to penetrate.

[0011] In one of the embodiments, the thickness of the heat dissipation rib is 10-12 mm, the draft angle of the heat dissipation rib is 3-4 degrees, and the number of the heat dissipation ribs is 36.

[0012] In one of the embodiments, the number of the positioning platforms is 12, and one positioning platform is arranged every two heat radiating ribs.

[0013] In one of the embodiments, a centering mechanism is further included, which comprises a plurality of centering assemblies arranged circumferentially on the disc body, and each centering assembly comprises a slide pin fixed on the wheel and a slide platform arranged on the disc body and matched with the slide pin.

[0014] In one of the embodiments, the slide pin comprises a pin body located in the middle and two slide blocks arranged at both axial ends of the pin body, and the slide platform is provided with slide grooves matched with the slide blocks.

[0015] In one of the embodiments, the wheel is provided with a third through hole for the pin body to pass through, and an O-ring is arranged between the pin body and the third through hole, and the pin body is provided with a limiting groove arranged circumferentially for the O-ring to be inserted.

[0016] In one of the embodiments, the number of the slide platforms is 6, and each slide platform is arranged between two adjacent positioning platforms, and the slide platform connects the two adjacent heat radiating ribs.

[0017] Compared with the prior art, the advantages of the utility model are:

[0018] 1. The locking mechanism adopts a variable-diameter sleeve, the second cylinder body with a large outer diameter can increase the contact area of the locking member and the disc body, reduce the surface stress of the disc body, and the first cylinder body with a small outer diameter reduces the overall rigidity of the sleeve and improves the fatigue performance of the bolt.

[0019] 2. The structure of the disc body increases the thickness of the heat radiating ribs, reduces the number of the heat radiating ribs, and increases the angle of the draft angle, which facilitates the production of the disc body by using the powder metallurgy process and meets the heat load and heat dissipation requirements.

[0020] 3. The centering structure is arranged to facilitate the centering of the disc body and the wheel. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0022] Figure 1 It is a structural schematic view of the wheel type brake disc structure embodiment of the utility model.

[0023] Figure 2 It is Figure 1 It is a local enlarged view of A in the center.

[0024] Figure 3 As Figure 1 Local enlarged view at B;

[0025] Figure 4 Structure schematic view of sleeve in the embodiment of the utility model;

[0026] Figure 5 Structure schematic view of sliding pin in the embodiment of the utility model;

[0027] Figure 6 Structure schematic view of disc body in the embodiment of the utility model;

[0028] Figure 7 Structure schematic view of disc body in the embodiment of the utility model;

[0029] Figure 8 Structure schematic view of disassembly in the embodiment of the utility model;

[0030] Among them:

[0031] 1, disc body; 1-1, heat dissipation rib; 1-2, positioning table; 1-2a, first through hole; 1-2b, mounting groove; 1-3, sliding table; 1-4, annular body;

[0032] 2, locking member;

[0033] 3, nut;

[0034] 4, sleeve; 4-1, first cylinder; 4-2, second cylinder;

[0035] 5, wheel; 5-1, second through hole; 5-2, third through hole;

[0036] 6, sliding pin; 6-1, pin body; 6-1a, limiting groove; 6-2, sliding block;

[0037] 7, 0 type ring. DETAILED DESCRIPTION

[0038] The above scheme will be further described in combination with specific embodiments. It should be understood that these embodiments are used to illustrate the utility model and do not limit the scope of the utility model. The implementation conditions used in the embodiments can be further adjusted according to the specific conditions of the manufacturer, and the implementation conditions not marked are usually the conditions in the conventional experiment.

[0039] As Figures 1 to 3 , Figure 8 Structure schematic view of the embodiment of the utility model, provide a kind of wheel type brake disc structure, including two disc bodies 1 being fixed on the axial both sides of wheel 5 and locking mechanism being fixed two disc bodies 1 on wheel 5.

[0040] The locking mechanism comprises a plurality of locking assemblies arranged along the circumference of the disc body 1. Specifically, the locking assembly comprises a locking piece 2 penetrating the wheel 5 and the two disc bodies 1, a nut 3 locking the locking piece 2, and two sleeves 4 sleeved on the locking piece 2 and abutting against the two disc bodies 1.

[0041] As shown in Figure 4 , the sleeve 4 has a structure of thin in the middle and thick at both ends, comprising a first sleeve body 4-1 in the middle and two second sleeve bodies 4-2 symmetrically arranged at the axial ends of the first sleeve body 4-1. The outer diameter of the second sleeve body 4-2 is larger than that of the first sleeve body 4-1. In this way, the second sleeve body 4-2 can increase the contact area of the locking piece 2 with the disc body 1 and reduce the surface stress of the disc body 1. The first sleeve body 4-1 can reduce the overall rigidity of the sleeve 4 and improve the fatigue performance of the locking piece 2, thereby improving the strength of the brake disc structure.

[0042] As shown in Figure 6 and Figure 7 , the disc body 1 comprises a ring body 1-4 and a plurality of heat dissipation ribs 1-1 uniformly arranged along the circumference of the ring body 1-4. The middle part of some of the heat dissipation ribs 1-1 is provided with a positioning platform 1-2 for the locking piece 2 to penetrate. The end face of the positioning platform 1-2 and the heat dissipation rib 1-1 close to the wheel 5 are located on the same plane. In this example, the locking piece 2 is a bolt. One sleeve 4 is arranged between the head of the bolt and one disc body 1, and the other sleeve 4 is arranged between the other disc body 1 and the nut 3.

[0043] In order to facilitate the installation of the locking piece 2, the positioning platform 1-2 is provided with a first through hole 1-2a for the locking piece 2 to penetrate and an installation groove 1-2b in communication with the first through hole 1-2a for installing the locking piece 2. The wheel 5 is provided with a second through hole 5-1 for the locking piece 2 to penetrate. The two sleeves 4 are arranged in the installation grooves 1-2b of the two disc bodies 1 respectively. The locking piece 2 penetrates one sleeve 4, one disc body 1, the wheel, the other disc body 1, and the other sleeve 4 in sequence and is locked by the nut 3. The number of the positioning platforms 1-2 is 12, and one positioning platform 1-2 is arranged every two heat dissipation ribs 1-1.

[0044] In this example, the thickness of the heat dissipation rib 1-1 is increased from 7 mm to 10-12 mm, the draft angle of the heat dissipation rib 1-1 is increased from 1-2 degrees to 3-4 degrees, and the number of the heat dissipation ribs 1-1 is 36, so that the structure of the disc body 1 is suitable for production by powder metallurgy process.

[0045] In order to facilitate the centering of the disc body 1 and the wheel 5, a centering mechanism is also provided. The centering mechanism comprises a plurality of centering assemblies arranged along the circumference of the disc body 1. The centering assembly comprises a sliding pin 6 fixed on the wheel 5 and a sliding platform 1-3 arranged on the disc body 1 and cooperating with the sliding pin 6.

[0046] As shown in Figure 5As shown, the slide pin 6 comprises a cylindrical pin body 6-1 in the middle and two sliders 6-2 arranged at the axial ends of the pin body 6-1, and the slide table 1-3 is provided with a sliding groove 1-3a matched with the sliders 6-2, and through the joint action of the plurality of centering assemblies, the centering of the disc body 1 and the wheel 5 is realized.

[0047] In order to facilitate the installation of the slide pin 6, the wheel 5 is provided with a third through hole 5-2 for the pin body 6-1 to pass through, and an O-ring 7 is arranged between the pin body 6-1 and the third through hole 5-2, and a limiting groove 6-1a for the O-ring 7 to be placed is arranged in the circumferential direction of the pin body 6-1, and through the arrangement of the O-ring 7, the slide pin 6 is tightly matched with the wheel 5.

[0048] In this example, the number of the slide tables 1-3 is six, and each slide table 1-3 is arranged between two adjacent positioning tables 1-2, and the slide table 1-3 connects the adjacent two heat dissipation ribs 1-1.

[0049] In summary, the brake disc structure can reduce the surface stress of the disc body and improve the structural strength.

[0050] The above examples are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and it cannot limit the protection scope of the present application. Any equivalent transformation or modification according to the spirit and essence of the present application should be covered within the protection scope of the present application.

Claims

1. A wheel brake disc structure, characterized in that, include: Two discs are symmetrically fixed on both sides of the wheel's axial direction; A locking mechanism for fixing the two discs to the wheel includes a plurality of locking components arranged circumferentially around the discs. Each locking component includes a locking member passing through the wheel and the two discs, a nut for locking the locking member, and two sleeves sleeved on the locking member and abutting against the two discs. Each sleeve includes a first sleeve located in the middle and two second sleeves symmetrically arranged at both ends of the first sleeve along its axial direction. The outer diameter of the second sleeve is larger than that of the first sleeve.

2. The wheel brake disc structure according to claim 1, characterized in that: The disc body includes an annular body and a plurality of heat dissipation ribs evenly spaced around the annular body. A positioning platform is provided in the middle of some of the heat dissipation ribs for the locking member to pass through. The positioning platform and the end face of the heat dissipation rib near the wheel are located on the same plane.

3. The wheel brake disc structure according to claim 2, characterized in that: The locking element is a bolt.

4. The wheel brake disc structure according to claim 3, characterized in that: The positioning platform is provided with a first through hole for the locking member to pass through and a mounting groove connected to the first through hole for installing the locking member. The wheel is provided with a second through hole for the locking member to pass through.

5. The wheel brake disc structure according to claim 2, characterized in that: The thickness of the heat dissipation ribs is 10-12mm, the draft angle of the heat dissipation ribs is 3-4 degrees, and the number of heat dissipation ribs is 36.

6. The wheel brake disc structure according to claim 5, characterized in that: The number of positioning platforms is 12, with one positioning platform installed every two heat dissipation fins.

7. The wheel brake disc structure according to claim 2, characterized in that: It also includes a centering mechanism, which includes a plurality of centering components arranged circumferentially along the disc body. Each centering component includes a sliding pin fixed on the wheel and a slide plate disposed on the disc body and cooperating with the sliding pin.

8. The wheel brake disc structure according to claim 7, characterized in that: The sliding pin includes a pin body located in the middle and two sliders disposed at both ends of the pin body along the axial direction. The slide table is provided with a sliding groove that matches the sliders.

9. The wheel brake disc structure according to claim 8, characterized in that: The wheel has a third through hole through which the pin passes, and an O-ring is provided between the pin and the third through hole. The pin has a limiting groove arranged circumferentially for the O-ring to be inserted.

10. The wheel brake disc structure according to claim 7, characterized in that: The number of slides is 6, and each slide is located between two adjacent positioning platforms. The slides are connected to two adjacent heat dissipation fins.

Images