CN220910289U - Double push disc 22.5 inch disc brake - Google Patents

Abstract

The utility model relates to a double-push disc 22.5 inch disc brake, which comprises a center distance L1 between two push discs; the distance from the center of the pushing disc to the longitudinal axis A is L5; the width of the brake lining is L2; the distance from the lower edge of the brake lining to the transverse axis B is L6; the inner circular arc of the friction material of the brake lining is R1, and the outer circular arc is R2; when the brake lining L2 is 125-138mm, L6 is 95-100mm, R1 is 118-125mm and R2 is 215-218mm, L1 is 125-138mm and L5 is 153-161mm; in the diameter direction of the brake disc, the clamping force between the brake lining and the brake disc gradually increases from outside to inside. The brake lining is uniformly stressed all the time, the service life of the brake lining is prolonged, and the overall stress of the brake is balanced. Is particularly suitable for heavy goods vehicles, stable performance and longer service life.

Description

Double push disc 22.5 inch disc brake

Technical Field

The utility model relates to the field of vehicle brakes, in particular to a double-push-disc 22.5-inch disc brake.

Background

The disc brake comprises a brake caliper body, a brake bracket, an inner brake lining, an outer brake lining and a brake disc, wherein the brake caliper body is connected with the brake bracket through two sliding bearings, the brake caliper body can slide relative to the brake bracket in the axial direction (the direction of a wheel shaft of an automobile during operation), and the inner brake lining and the outer brake lining respectively ride in two open gears of the brake bracket; two parallel and spaced fixed push plates are arranged in the brake caliper body and act to push the brake pads axially, pressing the inner brake pads against the brake discs, which are mounted on a rim, which is connected to the wheel.

When the disc brake works, a power source is provided by means of high-pressure gas, electromechanical and the like, the inner brake lining is pushed by the pushing disc to be attached to the brake disc which is connected with the wheel and rotates at a high speed, the outer brake lining is pressed against the other working surface of the brake disc by the reaction force of the brake caliper body, the inner brake lining and the outer brake lining are clamped on the brake disc, and braking force is generated, so that the vehicle is decelerated to a stop.

In the prior art, the contact area of a single brake lining is 200mm < 2 >, when the double-push disc 22.5-inch disc brake is used for a commercial vehicle, the temperature of the brake disc and the brake lining is high frequently due to braking of a heavy truck with poor road conditions, such as a heavy truck on a downhill road section for a long time, and the area of the brake lining of the conventional structure disc brake is small, the heat capacity is insufficient, and the service life of the brake lining is reduced.

Disclosure of utility model

The utility model aims to solve the technical problems that: the utility model provides a push away dish 22.5 inch disc brake, solves the not enough of prior art, and the problem that reduces brake lining life because its brake lining area is limited when former push away dish 22.5 inch disc brake uses under heavy goods vehicle and the harsh environment of braking environment.

The technical scheme adopted for solving the technical problems is as follows:

a push-push disc 22.5 inch disc brake is provided comprising

The brake caliper comprises a brake caliper body, a brake bracket, an inner brake lining, an outer brake lining, a brake disc, two sliding bearings and two pushing discs; the two brake linings are respectively arranged at two sides of the brake disc in the brake caliper body; the two pushing discs are arranged in parallel in the brake caliper body; the brake caliper body is connected with the brake bracket through two sliding bearings so as to enable the brake caliper body to axially move along the brake bracket;

the center distance between the two pushing discs is L1; the distance from the center of the pushing disc to the longitudinal axis A is L5;

The width of the brake lining is L2; the distance from the lower edge of the brake lining to the transverse axis B is L6; the inner circular arc of the friction material of the brake lining is R1, and the outer circular arc is R2;

When the brake lining L2 is 125-138mm, L6 is 95-100mm, R1 is 118-125mm and R2 is 215-218mm, L1 is 125-138mm and L5 is 153-161mm;

In the diameter direction of the brake disc, the clamping force between the brake lining and the brake disc gradually increases from outside to inside.

Further, the center distance between the two sliding bearings is L3, and the L3 is 290-310mm;

The distance from the sliding bearing to the transverse axis B is L4, and the L4 is 125-135mm.

Further, l1=131 mm, l5=158 mm;

L2=262 mm, l6=98 mm, r1=120 mm, r2=217 mm;

L3=300 mm, l4=129 mm.

The beneficial effects of the utility model are as follows:

The double-push disc 22.5-inch disc brake has the advantages that the whole friction area of the inner brake lining and the outer brake lining is enlarged, and meanwhile, the stress is optimized, so that the brake lining is uniformly stressed all the time, the service life of the brake is prolonged, and the overall stress of the brake is balanced. Is particularly suitable for heavy goods vehicles, stable performance and longer service life.

Drawings

The utility model is further described below with reference to the accompanying drawings.

FIG. 1 is a perspective view of a push-push disc 22.5 inch disc brake of the present utility model;

FIG. 2 is a cross-sectional view of a push-push disc 22.5 inch disc brake of the present utility model;

FIG. 3 is a perspective view of the brake caliper body;

FIG. 4 is a top view of the brake caliper body;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 4;

FIG. 6 is a schematic view of the parameters on the caliper body;

The brake caliper comprises a caliper body 1, a brake bracket 2, a caliper back 3, an inner brake lining 4, an outer brake lining 5, a brake disc 6, a push disc 7 and a sliding bearing.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The double-push disc type brake comprises a brake caliper body 1, a brake bracket 2, an inner brake lining 3, an outer brake lining 4, a brake disc 5, two sliding bearings 7 and two push discs 6; two brake linings are respectively arranged on two sides of a brake disc 5 in the brake caliper body 1; the two push plates 6 are arranged in parallel in the brake caliper body 1; the brake caliper body 1 is connected with the brake bracket 2 through two sliding bearings 7 so as to enable the brake caliper body 1 to axially move along the brake bracket 2;

The disc brake comprises 16 inches, 17.5 inches, 19.5 inches, 22.5 inches and 25 inches, the upper limit of friction force (or braking force) provided by the disc brakes with different specifications is different, the friction contact area of the internally mounted brake lining (single piece) is 200mm2 in the traditional disc brake with double pushing disc type 22.5 inches, and the use of the disc brake with 22.5 inches is poor in road conditions at present, such as heavy trucks in downhill road sections for a long time, the brake frequently causes high temperatures of the brake disc 5 and the lining, the area of the brake lining of the disc brake with the existing structure is small, and the heat capacity is insufficient, so that the service life of the brake lining is reduced.

Based on the defect, the application provides a new double-push disc 22.5-inch disc brake, wherein the new double-push disc 22.5-inch disc brake is based on the traditional double-push disc 22.5-inch disc brake, but two brake linings with larger areas are required to be additionally arranged, so that the new double-push disc 22.5-inch disc brake can provide larger friction force.

The following will describe in detail. It should be noted that the following description order of the embodiments is not intended to limit the preferred order of the embodiments of the present application. In the following embodiments, the descriptions of the embodiments are focused on, and for the part that is not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments.

In order to solve the technical problems of the prior art that the friction area of a brake lining of a double-push disc 22.5-inch disc brake is small, the braking force of the whole brake is insufficient and the service life of the brake lining is short when the double-push disc 22.5-inch disc brake is used in a severe braking environment, one embodiment of the application provides a double-push disc 22.5-inch disc brake. As will be described in detail below.

As shown in fig. 1-6, a push-push disc 22.5 inch disc brake includes

The brake caliper comprises a brake caliper body 1, a brake bracket 2, an inner brake lining 3, an outer brake lining 4, a brake disc 5, two sliding bearings 7 and two push discs 6; two brake linings are respectively arranged on two sides of a brake disc 5 in the brake caliper body 1; the two push plates 6 are arranged in parallel in the brake caliper body 1; the brake caliper body 1 is connected with the brake bracket 2 through two sliding bearings 7 so as to enable the brake caliper body 1 to axially move along the brake bracket 2;

As shown in fig. 6, the center-to-center distance between the two pushing trays 6 is L1; the distance from the center of the push disc 6 to the longitudinal axis A is L5;

The width of the brake lining is L2; the distance from the lower edge of the brake lining to the transverse axis B is L6; the inner circular arc of the friction material of the brake lining is R1, and the outer circular arc is R2;

When the brake lining L2 is 125-138mm, L6 is 95-100mm, R1 is 118-125mm and R2 is 215-218mm, L1 is 125-138mm and L5 is 153-161mm;

In the radial direction of the brake disc 5, the clamping force between the brake lining and the brake disc 5 increases gradually from outside to inside.

Specifically, as an alternative implementation manner in the embodiment, as shown in fig. 6, the center-to-center distance between two sliding bearings 7 is L3, and the L3 is 290-310mm;

The distance from the sliding bearing 7 to the transverse axis B is L4, and the L4 is 125-135mm.

Specifically, as a preference of the present embodiment, l1=131 mm, l5=158 mm;

L2=262 mm, l6=98 mm, r1=120 mm, r2=217 mm;

L3=300 mm, l4=129 mm.

In this embodiment, the specifications of the brake pad are controlled by four parameters, i.e., L2, L6, R1 and R2, and the friction area of the brake pad meeting the requirements of these parameters can reach 240mm2, compared with the conventional brake pad. The frictional contact area was increased by 40mm2. The friction area of the brake lining increases and the volume of the entire brake lining increases, and as the volume of the brake lining increases, the structure of the entire caliper body 1 must be adjusted accordingly, but this adjustment is constrained by the 22.5 inch specification.

Fig. 6 is a schematic diagram of the parameters on the caliper body 1, wherein the O point is the rim central axis, i.e. the wheel axis, the longitudinal axis a and the transverse axis B are virtual reference lines passing longitudinally and transversely through the 0 point, respectively, TI and T2 represent the central lines of the two push plates 6.

The double push disc 22.5 inch disc brake is provided with larger brake linings, the direct influence is that the positions of the two push discs 6 on the brake caliper body 1 are influenced by parameters L1 and L2, the positions of the two push discs 6 applying thrust to the brake linings are directly determined by the L1 and L2, the positions directly influence whether the brake linings can be uniformly attached to the brake disc 5 during operation, whether brake pressure distribution is proper or not and whether brake lining wear is uniform or not, and in the application, the L1 is controlled to be 125-138mm and the L5 is controlled to be 153-161mm, so that the positions of the two push discs 6 in the brake are controlled, and the operation of pushing the brake linings by the two push discs 6 is enabled to meet the requirements.

As shown in fig. 2, 3 and 6, the force analysis of the double push disc 22.5 inch disc brake during operation is performed, and the brake working power source F is applied to the inner brake lining 3 and is decomposed into F1, F2 and F3, and the sizes of the three are affected by the positions (L1 and L5 sizes) of the push disc 6T1 and the push disc 6T 2. Correspondingly, the forces in different areas of the outer brake lining 4 are divided into F4, F5 and F6, and it is to be noted that the forces F1, F2 and F3 on the inner brake lining 3 do not represent forces in only three positions of the inner brake lining 3, but represent forces in three positions of the inner brake lining 3 from outside to inside, i.e. F1 represents forces in positions of the outer side of the inner brake lining 3, F2 represents forces in positions of the middle of the inner brake lining 3, and F3 represents forces in positions of the inner side of the inner brake lining 3, and similarly, the forces F4, F5 and F6 of the outer brake lining 4 also represent forces in the outer side of the outer brake lining 4. In the present application, the control parameters L1 and L5 control the position of the push disc 6 for applying force to the inner brake lining 3, so that the clamping force between the brake lining and the brake disc 5 is gradually increased from outside to inside in the diameter direction of the brake disc 5, and the clamping force between the two brake linings to the inner ring position of the brake disc 5 is the largest.

The aim of the gradual increase of the brake lining force from outside to inside is to make the force applied between the brake lining and the brake disc 5 uniform and the wear of the brake lining uniform.

The caliper body 1 shown in fig. 2 is of a caliper structure, and the upper end of the tail portion is subjected to a reaction force F7 exerted by the caliper backs 21 on both sides. Therefore, the upper end of the tail part of the brake caliper body 1 is acted by F4 and F7, and F8 vertical upward component force is generated by the two components, so that the brake caliper body 1 has upward movement trend at the tail part during operation, and when the braking force is large, the movement trend is obvious, the stability of the brake operation is not facilitated, and the wear uniformity degree of a brake lining is influenced. In order to solve the problems, the application position of the acting force F (namely the dimensions of L1 and L5) is controlled, so that F1 is smaller than F2 and smaller than F3, F4 is smaller than F5 and smaller than F6, the tail component force F8 of the brake caliper body 1 is reduced as much as possible, meanwhile, the deviation of the magnitudes of F1 to F6 is not excessively large, and uneven wear of the brake linings caused by uneven stress under different working conditions is avoided.

The brake lining is clamped and attached with the brake disc to generate abrasion, and the abrasion speed of the brake lining in the radial direction is inconsistent due to the speed difference of the brake disc in the radial direction, so that F1 < F2 < F3 is required to be satisfied, and the abrasion difference in the radial direction is compensated;

If F1 is smaller than F2 and smaller than F3, the corresponding F4 is larger than F5 and larger than F6, and the F4 increases the component force of F8 vertically upwards, which is unfavorable for the working stability of the brake. Based on the above, after other parameters are determined, the L5 size is controlled so that F1 < F2 < F3, and the size deviation of F1 to F6 is not excessively large.

By reducing the force F4 at the outer side of the brake lining, the force at the F4 position on the brake lining basically corresponds to the position at the upper end of the tail of the brake caliper body 1, and by reducing the force at the outer side of the brake lining, the force at the upper end of the tail of the brake caliper body 1 is reduced, the force at F8 is reduced, the stress of the caliper back 21 is reduced, and the upward movement trend of the tail of the brake caliper body 1 during operation is avoided.

The double-push disc 22.5-inch disc brake has the advantages that the whole friction area of the inner brake lining and the outer brake lining 4 is enlarged, and meanwhile, the stress is optimized, so that the brake lining is uniformly stressed all the time, the service life of the brake is prolonged, and the overall stress of the brake is balanced. Is particularly suitable for heavy goods vehicles, stable performance and longer service life.

The components (components not illustrating the specific structure) selected in the present application are common standard components or components known to those skilled in the art, and the structures and principles thereof are known to those skilled in the art through technical manuals or through routine experimental methods.

In the description of embodiments of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. The above-described apparatus embodiments are merely illustrative, for example, the division of the units is merely a logical function division, and there may be other manners of division in actual implementation, and for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some communication interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present utility model may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

With the above-described preferred embodiments according to the present utility model as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.

Claims (3)

1. A dual push disc 22.5 inch disc brake comprising

The brake caliper comprises a brake caliper body, a brake bracket, an inner brake lining, an outer brake lining, a brake disc, two sliding bearings and two pushing discs; the two brake linings are respectively arranged at two sides of the brake disc in the brake caliper body; the two pushing discs are arranged in parallel in the brake caliper body; the brake caliper body is connected with the brake bracket through two sliding bearings so as to enable the brake caliper body to axially move along the brake bracket;

the center distance between the two pushing discs is L1; the distance from the center of the pushing disc to the longitudinal axis A is L5;

The width of the brake lining is L2; the distance from the lower edge of the brake lining to the transverse axis B is L6; the inner circular arc of the friction material of the brake lining is R1, and the outer circular arc is R2;

When the brake lining L2 is 125-138mm, L6 is 95-100mm, R1 is 118-125mm and R2 is 215-218mm, L1 is 125-138mm and L5 is 153-161mm;

In the diameter direction of the brake disc, the clamping force between the brake lining and the brake disc gradually increases from outside to inside.

2. A push-push disc 22.5 inch disc brake as defined in claim 1, wherein,

The center distance between the two sliding bearings is L3, and the L3 is 290-310mm;

The distance from the sliding bearing to the transverse axis B is L4, and the L4 is 125-135mm.

3. A push-push disc 22.5 inch disc brake as defined in claim 2, wherein,

L1=131 mm, l5=158 mm;

L2=262 mm, l6=98 mm, r1=120 mm, r2=217 mm;

L3=300 mm, l4=129 mm.