CN108105291B - Pin-type hub brake disc assembly for commercial vehicle - Google Patents
Pin-type hub brake disc assembly for commercial vehicle Download PDFInfo
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- CN108105291B CN108105291B CN201711463322.XA CN201711463322A CN108105291B CN 108105291 B CN108105291 B CN 108105291B CN 201711463322 A CN201711463322 A CN 201711463322A CN 108105291 B CN108105291 B CN 108105291B
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- brake disc
- hub
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- spline
- flange
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/12—Discs; Drums for disc brakes
- F16D65/123—Discs; Drums for disc brakes comprising an annular disc secured to a hub member; Discs characterised by means for mounting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D2065/13—Parts or details of discs or drums
- F16D2065/134—Connection
- F16D2065/1392—Connection elements
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The utility model provides a round pin axle type wheel hub brake disc assembly for commercial car, including wheel hub and brake disc, wherein, wheel hub comprises wheel hub flange and wheel hub bearing position, the brake disc includes the brake disc body, be equipped with a plurality of connection keyway along the circumferencial direction on the inner circle of the disc of brake disc body towards wheel hub one side, correspond the position of installing the brake disc body on the outer wall of wheel hub bearing position along circumferencial direction be equipped with connection keyway matched with connect spline, the brake disc body passes through connect keyway and connect spline to be installed on wheel hub bearing position, connect spline towards on the side of wheel hub flange with the outer wall on the position that corresponds be equipped with the location strengthening rib, the top surface of location strengthening rib protrusion connect spline is equipped with first semicircle orifice on the top surface of at least one connect spline, be equipped with the second semicircle orifice in the connection keyway that corresponds, install expandable fixed subassembly in the whole round orifice that second semicircle orifice and first semicircle orifice are constituteed. Is suitable for commercial vehicles.
Description
Technical Field
The invention relates to the field of commercial vehicle hubs, in particular to a pin shaft type hub brake disc assembly for a commercial vehicle.
Background
At present, medium and heavy trucks and passenger vehicles are widely applied to road transportation and engineering transportation, and a hub brake disc assembly is used as an important transmission link between the ground and a vehicle body and determines the running safety and economy of the whole vehicle. The existing hub brake disc assembly generally comprises a hub and a brake disc, wherein the hub consists of a hub flange and a hub bearing position, the brake disc consists of a brake disc body and a brake disc sleeve, and the brake disc is sleeved on the hub bearing position of the hub through the brake disc sleeve and fixed by a fixing bolt. The prior hub brake disc assembly has the following problems in actual use:
1. the brake disc is sleeved on the hub bearing position of the hub through the brake disc sleeve and is fixed by the fixing bolt, so that the fixing bolt can be subjected to a large shearing force;
2. because the fixing bolt is fixed on the connecting part of the brake disc sleeve and the hub bearing position, the braking force of the brake disc and the stress point of the fixing bolt are not in the same plane, and a certain distance exists between the braking force and the stress point in the axial direction, so that a bending moment can be generated, and the stress of the fixing bolt is further increased.
Disclosure of Invention
The invention aims to overcome the defects of the background technology and provides a pin shaft type hub brake disc assembly for a commercial vehicle.
In order to achieve the above object, the pin shaft type hub brake disc assembly for the commercial vehicle comprises a hub and a brake disc, wherein the hub consists of a hub flange and a hub bearing position, the brake disc comprises a brake disc body, a plurality of connecting key slots are formed in the inner ring of the disc, facing one side of the hub, of the brake disc body along the circumferential direction, connecting splines matched with the connecting key slots are formed in the outer wall of the hub bearing position at positions corresponding to the positions where the brake disc body is installed along the circumferential direction, the brake disc body is installed on the hub bearing position through the connecting key slots and the connecting splines, positioning reinforcing ribs are arranged at positions, corresponding to the outer wall of the hub bearing position, of the side face, facing the hub flange, of the connecting splines, the top surface of the connecting ribs protrudes out, at least one of the connecting splines is provided with a first semicircular hole, a second semicircular hole is formed in the corresponding connecting key slot, and an expandable fixing assembly is installed in the semicircular hole formed by the second semicircular hole and the first semicircular hole.
The connecting key groove is formed in the inner ring of the disc, facing one side of the hub, of the brake disc body, and the connecting spline matched with the connecting key groove is additionally arranged on the outer wall of the bearing position of the hub along the circumferential direction at the position corresponding to the position where the brake disc body is installed, so that the brake disc can be radially positioned and installed on the hub in a spline connection mode, and then the brake disc can be axially and fixedly installed on the hub through the matching between the expandable fixing assembly and the whole round hole, and the combined installation mode has the advantages that the spline structure is adopted, the connecting spline plays a main stress role, the expandable fixing assembly only plays a positioning role, the stress is very small, the size can be designed to be smaller, the installation and later maintenance are facilitated, and the service life is long; meanwhile, as the load born by the spline is larger, the service life is further prolonged; moreover, as the stress point of the spline and the braking force of the brake disc are in the same plane, no bending moment is generated, so that the stress working condition of the spline is greatly improved, and the service life is further prolonged; furthermore, as the brake disc body is directly arranged on the hub bearing position through the spline structure, the brake disc does not need to be provided with a brake disc sleeve, so that the weight of the assembly is greatly reduced, the weight of the whole automobile is facilitated, and the energy-saving and environment-friendly effects are achieved; finally, through adding the position strengthening rib that sets up on the side of connecting spline towards hub flange and the outer wall of hub bearing position on the position to make the top surface of positioning strengthening rib protrusion connecting spline, like this, the positioning strengthening rib that adds establishes can play intensity reinforcing's effect to connecting spline on the one hand, on the other hand can also play the effect of installation location to the brake disc body.
In the above scheme, expandable fixing assembly includes expansion sleeve, expansion pin axle and expansion nut, be equipped with the inflation opening on the lateral wall of expansion sleeve, the internal surface of expansion sleeve is the conical surface, the one end surface of expansion pin axle be with expansion sleeve's internal surface matched with conical surface, the other end surface of expansion pin axle is equipped with the screw thread, expansion sleeve suit is in on the conical surface end of expansion pin axle, expansion nut suit is in on the screw thread end of expansion pin axle, expansion sleeve with expansion pin axle inflation is installed in the whole round hole.
In the above scheme, the end face of the expansion nut, which faces the expansion shaft sleeve, is provided with a positioning flange, and the outer diameter of the positioning flange is larger than the inner diameter of the whole round hole. By adding the locating flange on the end face of the expansion nut facing the expansion shaft sleeve, the locating flange can be used as a reference to be propped against the disc on the side of the brake disc body facing the hub, and then the expandable fixing assembly is installed, so that the correct installation position of the expandable fixing assembly is ensured.
In the above scheme, the inner diameter of the disc of the brake disc body facing the wheel hub is smaller than the inner diameter of the disc of the brake disc body facing away from the wheel hub. By designing the inner diameter of the disc of the brake disc body facing the hub side smaller than the inner diameter of the disc of the brake disc body facing away from the hub side, the installation is facilitated.
In the above-mentioned scheme, the number of the expandable fixation assemblies is 5, and 5 groups of the expandable fixation assemblies are uniformly arranged along the circumferential direction.
The technical scheme provided by the invention has the beneficial effects that:
1. the connecting key groove is formed in the inner ring of the disc, facing one side of the hub, of the brake disc body, and the connecting spline matched with the connecting key groove is additionally arranged on the outer wall of the bearing position of the hub along the circumferential direction at the position corresponding to the position where the brake disc body is installed, so that the brake disc can be radially positioned and installed on the hub in a spline connection mode, and then the brake disc can be axially and fixedly installed on the hub through the matching between the expandable fixing assembly and the whole round hole, and the combined installation mode has the advantages that the spline structure is adopted, the connecting spline plays a main stress role, the expandable fixing assembly only plays a positioning role, the stress is very small, the size can be designed to be smaller, the installation and later maintenance are facilitated, and the service life is long;
2. the service life is further prolonged because the load born by the spline is larger;
3. because the stress point of the spline and the braking force of the brake disc are in the same plane, bending moment is not generated, so that the stress working condition of the spline is greatly improved, and the service life is further prolonged;
4. because the brake disc body is directly arranged on the hub bearing position through the spline structure, the brake disc does not need to design a brake disc sleeve, thereby greatly reducing the weight of the assembly, being beneficial to the light weight of the whole vehicle, and being more energy-saving and environment-friendly;
5. the positioning reinforcing ribs are added at positions corresponding to the outer walls of the hub bearing positions on the side surfaces of the connecting splines facing the hub flange, and the positioning reinforcing ribs protrude out of the top surfaces of the connecting splines, so that the added positioning reinforcing ribs can play a role in reinforcing the strength of the connecting splines on one hand and play a role in mounting and positioning the brake disc body on the other hand;
6. the positioning flange is added on the end face of the expansion nut, facing the expansion shaft sleeve, so that the positioning flange can be used as a reference to be propped against the disc on one side of the brake disc body, facing the hub, and then the expandable fixing assembly is installed, so that the correct installation position of the expandable fixing assembly is ensured;
7. by designing the inner diameter of the disc of the brake disc body facing the hub side smaller than the inner diameter of the disc of the brake disc body facing away from the hub side, the installation is facilitated.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of another view angle structure of FIG. 1;
FIG. 3 is a schematic diagram of the front view structure of FIG. 1;
FIG. 4 is a schematic rear view of the structure of FIG. 1;
FIG. 5 is a schematic cross-sectional view taken along line A-A of FIG. 4;
FIG. 6 is a schematic side view of the structure of FIG. 1;
FIG. 7 is a schematic structural view of a hub;
FIG. 8 is a schematic view of another view angle structure of FIG. 7;
FIG. 9 is a schematic diagram of the front view of FIG. 7;
FIG. 10 is a schematic rear view of the structure of FIG. 7;
FIG. 11 is a schematic cross-sectional view taken along line B-B of FIG. 10;
FIG. 12 is a schematic side elevational view of FIG. 7;
FIG. 13 is a schematic structural view of a brake disc;
FIG. 14 is a schematic diagram of the front view of FIG. 13;
FIG. 15 is a schematic side elevational view of FIG. 13;
FIG. 16 is a schematic view of an exploded construction of the present invention;
FIG. 17 is another view angle schematic diagram of FIG. 16;
FIG. 18 is a schematic diagram of the front view of FIG. 16;
FIG. 19 is a schematic view of another explosive structure according to the present invention;
FIG. 20 is a schematic structural view of an inflatable securing assembly;
FIG. 21 is a schematic diagram of the front view of FIG. 20;
FIG. 22 is a schematic side elevational view of FIG. 20;
FIG. 23 is a schematic cross-sectional view taken along line C-C in FIG. 22;
fig. 24 is a schematic view of an exploded construction of the inflatable securing assembly.
In the figure: the hub comprises a hub 1, a hub flange 1a, a hub bearing position 1b, a connecting spline 1c, a positioning reinforcing rib 1d, a first semicircular hole 1e, a spline vent hole 1f, a flange vent hole 1g, a vent hole reinforcing rib 1h, a brake disc 2, a brake disc body 2a, a connecting key groove 2b, a second semicircular hole 2c, an expandable fixing assembly 3, an expansion shaft sleeve 3a, an expansion pin shaft 3b, an expansion nut 3c, an expansion opening 3d and a positioning flange 3e.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, which should not be construed as limiting the invention.
Examples: the pin shaft type hub brake disc assembly for the commercial vehicle comprises a hub 1 and a brake disc 2, wherein the hub 1 consists of a hub flange 1a and a hub bearing position 1b, the brake disc 2 comprises a brake disc body 2a, a plurality of connecting key grooves 2b are formed in the circumferential direction on the inner ring of a disc, which faces one side of the hub 1, of the brake disc body 2a, connecting splines 1c matched with the connecting key grooves 2b are formed in the circumferential direction at positions, which correspond to the positions, on the outer wall of the hub bearing position 1b, of the brake disc body 2a, the hub bearing position 1b is mounted through the connecting key grooves 2b and the connecting splines 1c, positioning reinforcing ribs 1d are arranged at positions, which correspond to the outer wall of the hub bearing position 1b, on the side, of the connecting splines 1c, which faces the hub flange 1a, the positioning reinforcing rib 1d protrudes out of the top surface of the connecting spline 1c, the positioning reinforcing rib 1d is used for positioning and installing the brake disc body 2a and increasing the strength of the connecting spline 1c, a first semicircular hole 1e is axially arranged on the top surface of at least one connecting spline 1c, the first semicircular hole 1e is a through hole, the first semicircular hole 1e axially penetrates through the corresponding connecting spline 1c and the corresponding positioning reinforcing rib 1d, a second semicircular hole 2c is axially arranged in the corresponding connecting key slot 2b, the second semicircular hole 2c is a through hole, the second semicircular hole 2c axially penetrates through the corresponding connecting key slot 2b, an expandable fixing assembly 3 is arranged in a circular hole formed by the second semicircular hole 2c and the first semicircular hole 1e, the circular hole is also a through hole, the first semicircular hole 1e and the second semicircular hole 2c can be designed into blind holes according to actual needs; a spline vent hole 1f is arranged between the root parts of two adjacent connecting splines 1c, and a plurality of flange vent holes 1g which can be communicated with the spline vent holes 1f are arranged on the hub flange 1a along the circumferential direction.
The brake disc 2 can be radially positioned and installed on the hub 1 in a spline connection mode by arranging a connecting key groove 2b on the inner ring of the disc, which faces one side of the hub 1, along the circumferential direction, on the outer wall of the hub bearing position 1b, and arranging a connecting spline 1c matched with the connecting key groove 2b along the circumferential direction at the position corresponding to the position where the brake disc body 2a is installed, and then the brake disc 2 can be axially and fixedly installed on the hub 1 in a spline connection mode by matching the expandable fixing component 3 with the whole round hole, and the combined installation mode has the main stress effect due to the adoption of the spline structure, so that the expandable fixing component 3 only has the positioning effect and has very small stress, and the size can be designed to be smaller, thereby being convenient for installation and later maintenance and long in service life; meanwhile, as the load born by the spline is larger, the service life is further prolonged; moreover, as the stress point of the spline and the braking force of the brake disc are in the same plane, no bending moment is generated, so that the stress working condition of the spline is greatly improved, and the service life is further prolonged; furthermore, as the brake disc body 2a is directly arranged on the hub bearing position 1b through the spline structure, the brake disc 2 does not need to be designed with a brake disc sleeve, thereby greatly reducing the weight of the assembly, being beneficial to the weight reduction of the whole vehicle, and being more energy-saving and environment-friendly; then, through arranging spline vent holes 1e between the root parts of two adjacent connecting splines 1c and arranging a plurality of flange vent holes 1f which can be communicated with the spline vent holes 1e along the circumferential direction on the hub flange 1a, air can circulate in the assembly, thereby greatly improving the heat dissipation efficiency of the assembly and ensuring the driving safety; then, by adding the positioning reinforcing rib 1d to the position corresponding to the outer wall of the hub bearing position 1b on the side surface of the connecting spline 1c facing the hub flange 1a and making the positioning reinforcing rib 1d protrude out of the top surface of the connecting spline 1c, the added positioning reinforcing rib 1d can play a role in reinforcing the strength of the connecting spline 1c on the one hand and play a role in mounting and positioning the brake disc body 2a on the other hand; finally, by designing the first semicircular hole 1e to penetrate the positioning reinforcing rib 1d, on one hand, the installation of the expandable fixing assembly 3 is facilitated, and on the other hand, when the expandable fixing assembly 3 is detached, the expandable fixing assembly 3 can be abutted out from one end of the circular hole, which faces the hub flange 1a, so that the disassembly of the expandable fixing assembly 3 is facilitated.
The expandable fixing assembly 3 comprises an expansion shaft sleeve 3a, an expansion pin shaft 3b and an expansion nut 3c, wherein an expansion opening 3d is formed in the side wall of the expansion shaft sleeve 3a, the inner surface of the expansion shaft sleeve 3a is a conical surface, the outer surface of one end of the expansion pin shaft 3b is a conical surface matched with the inner surface of the expansion shaft sleeve 3a, threads are formed on the outer surface of the other end of the expansion pin shaft 3b, the expansion shaft sleeve 3a is sleeved on the conical surface end of the expansion pin shaft 3b, the expansion nut 3c is sleeved on the threaded end of the expansion pin shaft 3b, and the expansion shaft sleeve 3a and the expansion pin shaft 3b are installed in the round hole in an expansion mode. The end face of the expansion nut 3c, which faces the expansion shaft sleeve 3a, is provided with a positioning flange 3e, and the outer diameter of the positioning flange 3e is larger than the inner diameter of the whole round hole. By adding the positioning flange 3e to the end face of the expansion nut 3c facing the expansion sleeve 3a, the positioning flange 3e can be used as a reference to abut against the disc on the side of the brake disc body 2a facing the hub 1, and then the expandable fixing assembly 3 is mounted, so that the mounting position of the expandable fixing assembly 3 is ensured to be correct.
Each of the circular holes is provided with one flange vent hole 1g which is positioned on the same bus of the hub bearing position 1 b. By arranging each of the circular holes with one of the flange vent holes 1g on the same bus of the hub bearing position 1b, that is, each circular hole is arranged on the same bus of the hub bearing position 1b as the corresponding flange vent hole 1g, the auxiliary disassembly of the expandable fixing assembly 3 from the flange vent hole 1g is facilitated. And vent hole reinforcing ribs 1h are arranged between two adjacent flange vent holes 1g. By providing the vent hole reinforcing rib 1h between the two flange vent holes 1g, the strength of the flange vent holes 1g can be increased.
The inner diameter of the disc of the brake disc body 2a facing the wheel hub 1 is smaller than the inner diameter of the disc of the brake disc body 2a facing away from the wheel hub 1. The inner diameter of the disc of the brake disc body 2a on the side facing the hub 1 is designed to be smaller than the inner diameter of the disc of the brake disc body 2a on the side facing away from the hub 1, so that the two sides of the assembly can be ensured to be communicated, and the heat dissipation efficiency is improved. The number of flange vent holes 1g is greater than the number of spline vent holes 1 f. By designing the number of flange vent holes 1g to be larger than the number of spline vent holes 1f, the intake air quantity can be increased. Each of the spline vent holes 1f corresponds to one of the flange vent holes 1g located on the same bus of the hub bearing position 1 b. Through designing that each spline vent hole 1f corresponds to have a flange vent hole 1g to be located on the same bus of wheel hub bearing position 1b, namely that each spline vent hole 1f and corresponding flange vent hole 1g are located on same bus of wheel hub bearing position 1b, be favorable to the flow of air like this, improved radiating efficiency.
The spline vent hole 1f has a circular arc structure. Through designing spline ventilation hole 1f into circular arc structure, be favorable to the flow of air like this on the one hand, improved radiating efficiency, on the other hand can avoid stress concentration, ensured the intensity of connecting spline 1 c. The flange vent hole 1g is of an arc structure. Through designing the flange ventilation hole 1g into circular arc structure, be favorable to the flow of air like this on the one hand, improved radiating efficiency, on the other hand can avoid stress concentration, ensured the intensity of wheel hub flange 1 a.
The assembly method of the hub brake disc assembly comprises the following steps:
a. aligning the connecting key groove 2b on the brake disc body 2a with the connecting spline 1c on the hub 1, aligning the first semicircular hole 1e with the corresponding second semicircular hole 2c, and radially positioning and mounting the brake disc body 2a on the hub 1 through the connecting spline 1c and the connecting key groove 2b which are matched with each other;
b. axially pressing the brake disc body 2a on the positioning reinforcing rib 1 d;
c. the expandable fixing assembly 3 is inserted into a whole circular hole formed by the second semicircular hole 2c and the first semicircular hole 1e, and the expandable fixing assembly 3 is expanded so that the brake disc body 2a is axially and fixedly arranged on the hub 1.
When the expandable fixing assembly 3 is assembled, the expansion pin shaft 3b sleeved with the expansion shaft sleeve 3a and the expansion nut 3c is inserted into the round hole, the positioning flange 3e abuts against the end face of the round hole, which faces away from the hub flange 1a, of the round hole, and then the expansion nut 3c is screwed to expand the expandable fixing assembly 3.
According to the embodiment, the connecting key groove 2b is formed in the inner ring of the disc, facing one side of the hub 1, of the brake disc body 2a, the connecting spline 1c matched with the connecting key groove 2b is additionally arranged on the outer wall of the hub bearing position 1b along the circumferential direction at the position corresponding to the position where the brake disc body 2a is arranged, so that the brake disc 2 can be radially positioned and arranged on the hub 1 in a spline connection mode, and then the brake disc 2 can be axially and fixedly arranged on the hub 1 through the matching between the expandable fixing assembly 3 and the whole round hole, and the combined installation mode has the main stress effect due to the adoption of the spline structure, the expandable fixing assembly 3 only has the positioning effect and has very small stress, so that the size can be designed to be smaller, the installation and the later maintenance are facilitated, and the service life is longer; the service life is further prolonged because the load born by the spline is larger; because the stress point of the spline and the braking force of the brake disc are in the same plane, bending moment is not generated, so that the stress working condition of the spline is greatly improved, and the service life is further prolonged; because the brake disc body 2a is directly arranged on the hub bearing position 1b through a spline structure, the brake disc 2 does not need to be designed with a brake disc sleeve, thereby greatly reducing the weight of the assembly, being beneficial to the weight reduction of the whole vehicle, and being more energy-saving and environment-friendly; by arranging the spline vent holes 1e between the root parts of two adjacent connecting splines 1c and arranging a plurality of flange vent holes 1f which can be communicated with the spline vent holes 1e on the hub flange 1a along the circumferential direction, air can circulate in the assembly, so that the heat dissipation efficiency of the assembly is greatly improved, and the driving safety is ensured; the positioning reinforcing rib 1d is added to the side surface of the connecting spline 1c facing the hub flange 1a and the corresponding position on the outer wall of the hub bearing position 1b, and the positioning reinforcing rib 1d protrudes out of the top surface of the connecting spline 1c, so that the added positioning reinforcing rib 1d can play a role in reinforcing the strength of the connecting spline 1c and can play a role in mounting and positioning the brake disc body 2 a; through designing the first semicircle hole 1e to penetrate the positioning reinforcing rib 1d, the installation of the expandable fixing assembly 3 is facilitated on one hand, and when the expandable fixing assembly 3 is disassembled on the other hand, the expandable fixing assembly 3 can be propped out from one end of the whole semicircle hole, which faces the hub flange 1a, so that the disassembly of the expandable fixing assembly 3 is facilitated.
In addition, in this embodiment, by adding the positioning flange 3e on the end face of the expansion nut 3c facing the expansion sleeve 3a, the positioning flange 3e can be used as a reference to abut against the disc on the side of the brake disc body 2a facing the hub 1, and then the expandable fixing assembly 3 is installed, so as to ensure that the installation position of the expandable fixing assembly 3 is correct; by arranging each whole round hole with one corresponding flange vent hole 1g on the same bus of the hub bearing position 1b, namely arranging each whole round hole and the corresponding flange vent hole 1g on the same bus of the hub bearing position 1b, the auxiliary disassembly of the expandable fixing assembly 3 from the flange vent hole 1g is facilitated; by additionally arranging vent reinforcing ribs 1h between two flange vent holes 1g, the strength of the flange vent holes 1g can be increased; the inner diameter of the disc of the brake disc body 2a facing the wheel hub 1 is designed to be smaller than the inner diameter of the disc of the brake disc body 2a facing away from the wheel hub 1, so that the two sides of the assembly are ensured to be communicated, and the heat dissipation efficiency is improved; by designing the number of flange vent holes 1g to be larger than the number of spline vent holes 1f, the intake air quantity can be increased; through designing that each spline vent hole 1f is correspondingly provided with one flange vent hole 1g on the same bus of the hub bearing position 1b, namely that each spline vent hole 1f and the corresponding flange vent hole 1g are positioned on the same bus of the hub bearing position 1b, the flow of air is facilitated, and the heat dissipation efficiency is improved; by designing the spline vent hole 1f into an arc structure, on one hand, the flow of air is facilitated, the heat dissipation efficiency is improved, on the other hand, stress concentration can be avoided, and the strength of the connecting spline 1c is ensured; through designing the flange ventilation hole 1g into circular arc structure, be favorable to the flow of air like this on the one hand, improved radiating efficiency, on the other hand can avoid stress concentration, ensured the intensity of wheel hub flange 1 a.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (3)
1. The pin shaft type hub brake disc assembly for the commercial vehicle comprises a hub (1) and a brake disc (2), wherein the hub (1) is composed of a hub flange (1 a) and a hub bearing position (1 b), the brake disc (2) comprises a brake disc body (2 a), and is characterized in that a plurality of connecting key grooves (2 b) are formed in the inner ring of the disc on one side of the hub (1) in the circumferential direction, a connecting spline (1 c) matched with the connecting key groove (2 b) is arranged at the position of the brake disc body (2 a) in the circumferential direction on the outer wall of the hub bearing position (1 b), the brake disc body (2 a) is installed on the hub bearing position (1 b) through the connecting key groove (2 b) and the connecting spline (1 c), a positioning reinforcing rib (1 d) is arranged at the position corresponding to the outer wall of the hub bearing position (1 b) on the side face of the hub flange (1 a), a connecting spline (1 c) is arranged on the top surface of a connecting semi-circular hole (1 c) in a corresponding mode, a connecting spline (1 c) is arranged on the top surface of the first semi-circular hole (1 c), an expandable fixing component (3) is arranged in a whole round hole formed by the second semicircular hole (2 c) and the first semicircular hole (1 e);
the expandable fixing assembly (3) comprises an expansion shaft sleeve (3 a), an expansion pin shaft (3 b) and an expansion nut (3 c), an expansion opening (3 d) is formed in the side wall of the expansion shaft sleeve (3 a), the inner surface of the expansion shaft sleeve (3 a) is a conical surface, the outer surface of one end of the expansion pin shaft (3 b) is a conical surface matched with the inner surface of the expansion shaft sleeve (3 a), threads are formed on the outer surface of the other end of the expansion pin shaft (3 b), the expansion shaft sleeve (3 a) is sleeved on the conical surface end of the expansion pin shaft (3 b), the expansion nut (3 c) is sleeved on the threaded end of the expansion pin shaft (3 b), and the expansion shaft sleeve (3 a) and the expansion pin shaft (3 b) are installed in the round hole in an expanding mode; the inner diameter of the disc on the side of the brake disc body (2 a) facing the hub (1) is smaller than the inner diameter of the disc on the side of the brake disc body (2 a) facing away from the hub (1).
2. The pin hub brake disc assembly for a commercial vehicle according to claim 1, wherein a positioning flange (3 e) is provided on an end surface of the expansion nut (3 c) facing the expansion sleeve (3 a), and an outer diameter of the positioning flange (3 e) is larger than an inner diameter of the round hole.
3. A pin-type hub brake disc assembly for a commercial vehicle according to claim 1, wherein the number of the expandable fixing members (3) is 5 groups, and the expandable fixing members (3) of 5 groups are uniformly arranged in the circumferential direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711463322.XA CN108105291B (en) | 2017-12-28 | 2017-12-28 | Pin-type hub brake disc assembly for commercial vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711463322.XA CN108105291B (en) | 2017-12-28 | 2017-12-28 | Pin-type hub brake disc assembly for commercial vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108105291A CN108105291A (en) | 2018-06-01 |
| CN108105291B true CN108105291B (en) | 2023-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711463322.XA Active CN108105291B (en) | 2017-12-28 | 2017-12-28 | Pin-type hub brake disc assembly for commercial vehicle |
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| CN (1) | CN108105291B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018131016B4 (en) * | 2018-12-05 | 2021-03-25 | Saf-Holland Gmbh | Brake disc assembly |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101101027A (en) * | 2006-07-05 | 2008-01-09 | 哈尔德克斯制动产品股份公司 | Disc brake and spacer element |
| CN202194979U (en) * | 2011-07-06 | 2012-04-18 | 武汉元丰汽车零部件有限公司 | Braking part for automobiles |
| CN204110000U (en) * | 2014-09-18 | 2015-01-21 | 东风汽车公司 | A kind of plate disc brake mounting structure |
| CN105370772A (en) * | 2015-12-17 | 2016-03-02 | 北京交通大学 | Connecting structure of shaft-mounted brake disc and disc hub of railway vehicle |
| CN207893023U (en) * | 2017-12-28 | 2018-09-21 | 湖北三环车桥有限公司 | Pin type wheel hub brake disk assembly for commercial car |
-
2017
- 2017-12-28 CN CN201711463322.XA patent/CN108105291B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101101027A (en) * | 2006-07-05 | 2008-01-09 | 哈尔德克斯制动产品股份公司 | Disc brake and spacer element |
| CN202194979U (en) * | 2011-07-06 | 2012-04-18 | 武汉元丰汽车零部件有限公司 | Braking part for automobiles |
| CN204110000U (en) * | 2014-09-18 | 2015-01-21 | 东风汽车公司 | A kind of plate disc brake mounting structure |
| CN105370772A (en) * | 2015-12-17 | 2016-03-02 | 北京交通大学 | Connecting structure of shaft-mounted brake disc and disc hub of railway vehicle |
| CN207893023U (en) * | 2017-12-28 | 2018-09-21 | 湖北三环车桥有限公司 | Pin type wheel hub brake disk assembly for commercial car |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108105291A (en) | 2018-06-01 |
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