CN215851167U - Independent suspension front disc brake for double-tire truck - Google Patents

Abstract

The utility model discloses an independent suspension front disc brake of a double-tire truck, which comprises a brake caliper, a steering knuckle middle shaft, a middle shaft nut, a brake disc, a tapered roller bearing and an end cover, wherein the steering knuckle is connected with the tapered roller bearing through the middle shaft; the wheel hub is connected with a brake disc through a bolt, and the brake caliper is fixed on the steering knuckle; the tapered roller bearings are assembled in a butt mode by adopting the roller bearings with the same size, the width of the bearings in the axial direction is increased, and the width reaches 60 mm; the steering knuckle middle shaft adopts a cylindrical structure. The problem that the independent suspension front disc brake of the double-tire truck is low in installation difficulty and wide in range of adjustable offset distance is solved; the number of components is small, the integration level is high, and the failure rate is low; the bearing is used for one generation, the number of parts is relatively small, manual special repair and maintenance are not needed in the daily use process, and the cost is low.

Description

Independent suspension front disc brake for double-tire truck

Technical Field

The utility model relates to the field of brakes, in particular to an independent suspension front disc type brake for a double-tire truck.

Background

The tire mounting offset distance that the wheel hub bearing that current disc brake used can realize is generally between 40 ~ 45 mm. The wheel hub bearing that generally adopts is second generation product, and there is manufacturing cost height, and similar product modification degree of difficulty is big, and production cycle is long, the difficult problem of solving 90 ~ 100 mm's of tire offset brake arrangement scheme.

The existing brake arrangement scheme for solving the problem that the tire offset distance of the double-tire truck is 90-100 mm in the market adopts a front suspension mode to realize integral bridge type suspension, the defects of the suspension mode include poor driving comfort, low safety performance and low safety performance, the collision test is not easy to pass, the realization mode is also complex, and the defects of high installation precision requirement, high requirement on production personnel, more formed parts, unstable system and the like exist.

The independent suspension disc brake is characterized in that a front disc brake is formed by a mode of assembling and mounting a steering knuckle, a brake disc, a hub bearing, a mudguard, a middle shaft nut, an end cover, a brake caliper and a connecting bolt, and the number of formed parts is large, and the failure rate is relatively high.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides the independent suspension front disc brake for the double-tire wagon, which solves the problems existing in the arrangement of the independent suspension brake for the double-tire wagon and can better adapt to tires with large offset distance; the production rate, efficiency, energy consumption, interchangeability, cost saving, later maintenance and the like can be obviously improved.

In order to achieve the purpose, the utility model provides the following technical scheme: a double-tire truck independent suspension front disc brake comprises a brake caliper, a steering knuckle middle shaft, a middle shaft nut, a brake disc, a tapered roller bearing and an end cover, wherein the steering knuckle is connected with the tapered roller bearing through the middle shaft; the wheel hub is connected with a brake disc through a bolt, and the brake caliper is fixed on the steering knuckle;

the tapered roller bearings are assembled in a butt mode by adopting the roller bearings with the same size, the width of the bearings in the axial direction is increased, and the width reaches 60 mm;

the steering knuckle middle shaft adopts a cylindrical structure.

The key point of the utility model is the distance between the bearing and the center of the tire, and if the distance is too large or too small, the bearing is in a state of being subjected to bending moment for a long time, and the service life is inevitably influenced. In order to meet the working condition that the tire offset distance is 90-100 mm, the technology adopts a double-row tapered roller bearing method. On one hand, the tapered roller bearing can bear radial force, and the radial force is just caused by braking, so that the service life of the bearing is prolonged, the double-row bearing can bear the radial force in two directions in a butt-joint mode, and the requirements can be met in a braking state or a non-braking state; on the other hand, the double-row bearing increases the width of the bearing in the axial direction, and the width can reach 60 mm. The bearing is stressed as much as possible, so that the bearing is prevented from being shortened in service life due to overlarge bending moment. The large width can better meet the working condition that the tire offset distance is 90-100 mm.

Compared with the prior art, the utility model has the beneficial effects that:

(1) the original scheme of the independent suspension brake is that two roller bearings with different sizes are respectively arranged at two ends of a middle shaft to enlarge the stress distance. The roller bearings are different in size, and installation of the roller bearings is complex, so that installation time is long. The roller bearings with the same size are oppositely arranged, the size is the same, the roller bearings can be arranged together during installation, and the installation time is short.

(2) The centre shaft in the original independent suspension brake solution is not cylindrical but conical. The surface matched with the bearing has two surfaces (processing surfaces), which brings extra work for processing and inspection and has higher energy consumption. The shaft is a surface, and the surface is processed, so that the production time can be saved.

(3) The original scheme of the independent suspension brake needs to adjust the structures of three parts, so that the realization difficulty is high, more parts are formed, the development cost is high, and the failure rate is relatively high; the utility model has the advantages of few components, low development cost, high integration level and low failure rate.

(4) The technical difficulty of the original independent suspension brake scheme is high, the adjustable offset range is narrow, the technical difficulty of the utility model is low, and the adjustable offset range is wide.

(5) In the original scheme of the independent suspension brake, a user needs to maintain in the daily use process, and the utility model does not need manual maintenance.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.

FIG. 1 is a schematic view of the structure of the present invention.

In the figure: 1. a brake caliper; 2. a knuckle; 3. a knuckle center shaft; 4. a middle shaft nut; 5. a brake disc; 6. a hub connecting bolt; 7. a tapered roller bearing; 8. a circlip; 9. a fender; 10. and (4) end covers.

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.

Referring to fig. 1, the present invention provides a technical solution: a front disc brake for independent suspension of a double-tire truck comprises a brake caliper 1, a steering knuckle 2, a steering knuckle middle shaft 3, a middle shaft nut 4, a brake disc 5, a tapered roller bearing 7 and an end cover 10. The tapered roller bearings 7 are assembled in pairs by adopting roller bearings with the same size to form a double-row tapered roller bearing structure. The knuckle 2 is connected with a double-row tapered roller bearing through a knuckle middle shaft 3, the outer diameter of the bearing is connected with a hub, and the axial position of the bearing is positioned through a middle shaft nut 4. The hub is connected with a brake disc 5 through a bolt, and the brake caliper is fixed on the steering knuckle 2 through a bolt; when braking, the piston in the brake caliper is pushed out under high pressure, and then the friction plate is pushed to rub the brake disc, so that braking is realized; when the brake is cancelled, the high pressure is cancelled, the piston rebounds, the friction plate returns because of the rotation of the brake disc, and the brake is repeatedly realized.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (1)

1. A double-tire truck independent suspension front disc brake comprises a brake caliper, a steering knuckle middle shaft, a middle shaft nut, a brake disc, a tapered roller bearing and an end cover, and is characterized in that the steering knuckle is connected with the tapered roller bearing through the middle shaft, the outer diameter of the bearing is connected with a hub, and the axial position of the bearing is positioned through the middle shaft nut; the wheel hub is connected with a brake disc through a bolt, and the brake caliper is fixed on the steering knuckle;

the tapered roller bearings are assembled in a butt mode by adopting the roller bearings with the same size, and the width of the bearings in the axial direction is increased by 60 mm;

the steering knuckle middle shaft adopts a cylindrical structure.