A single-sided double-caliper commercial vehicle light truck front axle

Abstract

A single-sided dual-caliper front axle for commercial light trucks includes a front axle and a steering knuckle rotatably mounted on the outer end of the front axle. A carbon-ceramic brake disc is supported on the outside of the steering knuckle shaft via a bearing unit. A hub flange is fixed to the outer end of the carbon-ceramic brake disc. The inner and outer friction pads of each set of brake calipers correspond to the two sides of the friction surface of the carbon-ceramic brake disc, respectively. A mounting plate is fixed to the inner side of the steering knuckle, and a set of brake calipers is fixed to the front and rear of the mounting plate, respectively. This utility model is the first to design and match a single-sided dual-caliper front axle for commercial vehicles. By designing the two sets of brake calipers in series, the braking force is doubled, achieving the braking torque of similar air brakes, solving the problem of insufficient braking force of hydraulic brakes. The brake disc, made of a new type of carbon-ceramic material, is particularly suitable for electric vehicles with frequent braking, high braking temperatures, and high requirements for braking stability.

Description

Technical Field

[0001] This utility model relates to the field of vehicle axle technology, specifically a single-sided dual-caliper front axle for commercial light trucks. Background Technology

[0002] With the government's strict enforcement against issues such as "overloading and mislabeling" of vehicles, the transportation environment for light commercial trucks is constantly being optimized. Customers are demanding higher freight efficiency and have a greater need for compliant light commercial vehicles. Lightweighting allows commercial vehicles to legally carry more cargo, which not only improves fuel economy but also enhances the transportation efficiency of the logistics industry while ensuring road traffic safety. Industry players' pursuit of lightweighting is gradually shifting from blind pursuit to rationality. Therefore, it has become mainstream for vehicle manufacturers to develop lighter and more comfortable new lightweight commercial vehicles while meeting existing market demands.

[0003] Under normal circumstances, in order to ensure sufficient braking torque during braking, commercial vehicles weighing more than 2 tons are mainly designed with air brakes. Compared with hydraulic brakes, air brakes have added components such as air compressors, brake chambers, and air tanks, which are heavier and occupy more space in the vehicle. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this utility model is to provide a single-sided dual-caliper front axle for commercial light trucks.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: a single-sided dual-caliper commercial vehicle light truck front axle, including a front axle and a steering knuckle rotatably mounted on the outer end of the front axle. A carbon ceramic brake disc is supported on the outside of the steering knuckle shaft by a bearing unit. A hub flange is fixed to the outer end of the carbon ceramic brake disc. The inner and outer friction pads of each set of brake calipers correspond to the two sides of the friction surface of the carbon ceramic brake disc. A mounting plate is fixed to the inner side of the steering knuckle, and a set of brake calipers is fixed to the front and rear of the mounting plate, respectively.

[0006] Furthermore, the mounting plate has an isosceles trapezoidal structure, and an opening through the steering knuckle is provided in the middle of the bottom base. The opening is fixedly connected to the inner side of the steering knuckle by bolts, and hollow mounting holes are provided at the upper and lower ends of the two sides of the mounting plate.

[0007] Furthermore, a tie rod arm and a tie rod are rotatably mounted on the lower sleeve portion of one of the steering knuckles.

[0008] Furthermore, a steering knuckle nut is screwed onto the outer end of the steering knuckle shaft, which locks the outer end of the bearing unit. A steering knuckle locking washer is also fitted between the steering knuckle nut and the outer end of the bearing unit.

[0009] Furthermore, wheel hub bolts and nuts are evenly arranged on the outside of the wheel hub flange, penetrating the wheel hub flange.

[0010] Furthermore, the upper and lower sleeve portions of the steering knuckle are rotatably mounted on the upper and lower rotating shafts at the outer end of the front axle via thrust bearings.

[0011] With the above settings, this utility model is the first to match a single-sided dual caliper design on the front axle of a commercial vehicle. Through theoretical design, CAE analysis and bench testing, two sets of brake calipers are matched and designed on one side of the front axle. By connecting the two sets of brake calipers in series, the braking force is doubled, which can reach the braking torque of similar air brakes. This solves the problem of insufficient braking force of hydraulic brakes. Compared with air brakes, the single-sided hydraulic brake dual caliper front axle can reduce weight by 15kg, a weight reduction of 10%, while the cost is reduced by about 500 yuan.

[0012] Brake discs made of new carbon-ceramic materials, namely carbon-ceramic brake discs, have the advantages of being lightweight, having high braking efficiency, high temperature resistance, long service life, and high safety. The weight of the brake disc is reduced by 60%; it has high braking stability, reduces braking force fade by 55% when wading or at high temperatures, and increases the life of the brake disc by 5 times, up to 500,000 kilometers without maintenance. It is especially suitable for electric vehicles with frequent braking, high braking temperature, and high requirements for braking stability. Attached Figure Description

[0013] The present invention will now be further described with reference to the accompanying drawings.

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0015] Figure 2 This is a side view of the structure of this utility model. Detailed Implementation Example 1

[0016] like Figure 1-2 As shown, a single-sided dual-caliper commercial light truck front axle includes a front axle 1 and a steering knuckle 2 rotatably mounted on the outer end of the front axle 1. A carbon-ceramic brake disc 4 is supported on the outside of the steering knuckle 2 via a bearing unit 3. A hub flange 5 is fixed to the outer end of the carbon-ceramic brake disc 4. The inner and outer friction pads of each set of brake calipers 7 correspond to the two sides of the friction surface of the carbon-ceramic brake disc 4, as in the current brake caliper 7 structure. A mounting plate 6 is fixed to the inner side of the steering knuckle 2, and a set of brake calipers 7 is fixed to the front and rear of the mounting plate 6, i.e., two sets of brake calipers 7. This not only has the best effect, but also the best cost control.

[0017] Specifically: The mounting plate 6 is an isosceles trapezoidal structure, and an opening through the steering knuckle 2 is provided in the middle of the bottom. The opening is fixedly connected to the inner side of the steering knuckle 2 by bolts. Hollow mounting holes 8 are provided at the upper and lower ends of the two sides of the mounting plate 6.

[0018] In addition, as in the prior art: the lower sleeve portion of one side of the steering knuckle 2 is rotatably equipped with a tie rod arm 9 and a tie rod 10; the outer end of the steering knuckle 2 shaft is screwed with a steering knuckle nut 11; the outer end of the bearing unit 3 is locked by the steering knuckle nut 11; a steering knuckle locking washer is also fitted between the steering knuckle nut 11 and the outer end of the bearing unit 3; the outer side of the hub flange 5 is evenly distributed with hub bolts and nuts 12 that penetrate the hub flange 5; the upper and lower sleeve portions of the steering knuckle 2 are respectively rotatably mounted on the upper and lower shafts at the outer end of the front axle 1 via thrust bearings 13.

[0019] Working principle of this utility model:

[0020] In this invention, two brake calipers 7 are mounted on the steering knuckle 2 via mounting plate 6. The two brake calipers 7 are connected in series via hoses. When the vehicle is braking, the oil supply line of the whole vehicle injects oil and pressurizes the cylinders of the two connected brake calipers 7. The friction blocks of the brake calipers 7 press against the carbon ceramic brake disc 4 and generate friction torque. This torque is transmitted to the wheel through the wheel hub flange 5 and wheel hub bolts and nuts, causing the whole vehicle to decelerate. The greater the braking force, the greater the deceleration of the vehicle, thus forming the whole vehicle braking process.

[0021] In addition, the brake disc using a new type of carbon-ceramic material, namely the carbon-ceramic brake disc, has the advantages of being lightweight, having high braking efficiency, high temperature resistance, long service life, and high safety. The weight of the brake disc is reduced by 60%; it has high braking stability, reduces braking force fade by 55% when wading through water and at high temperatures, and increases the life of the brake disc by 5 times, reaching up to 500,000 kilometers without maintenance. It is especially suitable for electric vehicles with frequent braking, high braking temperature, and high requirements for braking stability.

[0022] The above description is merely an illustrative embodiment of this utility model and is not intended to limit the scope of this utility model. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of this utility model should fall within the protection scope of this utility model.

Claims

1. A single-sided dual-caliper front axle for a light commercial truck, comprising a front axle (1) and a steering knuckle (2) rotatably mounted on the outer end of the front axle (1), wherein a carbon-ceramic brake disc (4) is supported on the outside of the steering knuckle (2) via a bearing unit (3), and a hub flange (5) is fixed to the outer end of the carbon-ceramic brake disc (4), wherein the inner and outer friction pads of each set of brake calipers (7) correspond to the two sides of the friction surface of the carbon-ceramic brake disc (4), characterized in that: A mounting plate (6) is fixed to the inner side of the steering knuckle (2), and a set of brake calipers (7) are fixed to the front and rear of the mounting plate (6).

2. The single-sided dual-caliper front axle for commercial light trucks as described in claim 1, characterized in that: The mounting plate (6) is an isosceles trapezoidal structure, and an opening through the steering knuckle (2) is provided in the middle of the bottom. The opening is fixedly connected to the inner side of the steering knuckle (2) by bolts. Hollow mounting holes (8) are provided at the upper and lower ends of the two sides of the mounting plate (6).

3. The single-sided dual-caliper front axle for commercial light trucks as described in claim 1, characterized in that: One of the steering knuckles (2) has a tie rod arm (9) and a tie rod (10) rotatably mounted on the lower sleeve portion.

4. The single-sided dual-caliper front axle for commercial light trucks as described in claim 1, characterized in that: The outer end of the steering knuckle (2) shaft is screwed with a steering knuckle nut (11), which locks the outer end of the bearing unit (3) through the steering knuckle nut (11). A steering knuckle locking washer is also fitted between the steering knuckle nut (11) and the outer end of the bearing unit (3).

5. The single-sided dual-caliper front axle for commercial light trucks as described in claim 1, characterized in that: Wheel hub bolts and nuts (12) are evenly arranged on the outside of the wheel hub flange (5).

6. The single-sided dual-caliper front axle for commercial light trucks as described in claim 1, characterized in that: The upper and lower sleeve parts of the steering knuckle (2) are rotatably mounted on the upper and lower rotating shafts at the outer end of the front axle (1) via thrust bearings (13).

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