One-time cast trailer axle

Abstract

The trailer axle comprises an axle assembly and a supporting arm assembly, the axle assembly comprises an axle middle section and bearing sleeves located at the two ends of the axle middle section, the supporting arm assembly comprises a supporting arm and an air bag supporting arm, and the axle middle section perpendicularly intersects with the axis of the supporting arm and the axis of the air bag supporting arm. The supporting arm and the air bag supporting arm are arranged corresponding to the two sides of the axle middle section respectively, and the axes of the supporting arm and the air bag supporting arm coincide or are arranged in parallel in a staggered mode. The axle middle section, the supporting arms and the airbag corbels are formed by one-time casting; according to the utility model, the connection mode of using a bolt tightening or welding process is reduced, the maintenance-free axle for the whole life is realized, the weight is light, the noise is low, the service life is long, and the repair and maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of an axle and an air suspension of a running mechanism of a cargo semi-trailer, in particular to a one-time cast trailer axle. Background Art

[0002] A semitrailer is a trailer with an axle placed behind the vehicle's center of gravity (when the vehicle is evenly loaded) and equipped with a coupling device that can transmit horizontal and vertical forces to the towing vehicle. The semitrailer axle is connected to the frame through a suspension, with wheels installed at both ends. The function of the axle is to bear the semitrailer's load and maintain normal driving on the road. Due to the large amount of cargo, semitrailers usually use a semitrailer running mechanism with multiple attachments or welded vehicles. Semitrailers are generally a heavy-duty transportation vehicle connected to the semitrailer head through a traction pin. However, because the semitrailer axle has no power and can only be towed, the safety and maintenance of the axle cannot be ignored.

[0003] Existing semi-trailer running mechanisms have numerous connecting parts, resulting in complex assembly and high maintenance costs. Furthermore, the bumpy road conditions during driving create different vibration frequencies between the various components, increasing noise. Therefore, a single-cast running mechanism with fewer connecting parts, consisting of a trailer axle and support arm, is proposed. This simplifies the running mechanism, reduces maintenance costs, and reduces urban noise. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to solve the above-mentioned problems. The one-time casting trailer axle is realized as follows:

[0005] The present application provides a single-cast trailer axle, characterized in that it includes an axle assembly and a support arm assembly, wherein the axle assembly includes an axle middle section and bearing sleeves at both ends, and the support arm assembly includes a support arm and an airbag support arm, wherein the axle middle section intersects perpendicularly with the axes of the support arm and the airbag support arm, and the support arm and the airbag support arm are respectively arranged on opposite sides of the axle middle section, and the axes of the support arm and the airbag support arm coincide with or are arranged parallel and staggered;

[0006] The middle section of the axle, the support arm and the airbag support arm are cast in one piece;

[0007] Brake mounting plates are respectively provided at both ends of the middle section of the axle.

[0008] In some optional embodiments, the bearing sleeve and the axle middle section are cast at one time, or inserted into the shaft holes at both ends of the axle middle section and positioned and locked by locating pins.

[0009] In some optional implementation schemes, the brake mounting plate and the axle middle section are cast in one piece, and the brake mounting plate is provided with a brake mounting hole and an ABS sensor hole.

[0010] In some optional embodiments, bosses are provided on both sides of one end of the support arm close to the middle section of the axle, and a plurality of bolt through holes are provided on the bosses for installing the shock absorber bracket. The support arms are symmetrically arranged front and back along the same side of the middle section of the axle, and a bushing hole is provided at the end away from the middle section of the axle.

[0011] In some optional embodiments, the airbag support arm is symmetrically arranged front to back along the other side of the middle section of the axle, and a circular or square airbag base is provided at the end of the airbag support arm away from the middle section of the axle, and an airbag mounting hole is provided on the airbag base.

[0012] In some optional embodiments, the support arm and the airbag supporting arm are an I-shaped structure or a hollow cylindrical structure with grooves on both sides.

[0013] In some optional embodiments, the outer diameter or side length of the middle section of the axle is 120mm-200mm, the diameter of the bolt through hole is 12mm-18mm, and the diameter of the bushing hole is 30mm-180mm.

[0014] In some optional embodiments, the bearing sleeve is provided with two bearing positions, and the diameter of the bearing positions is 50 mm-120 mm.

[0015] In some optional implementation schemes, the diameters of the brake mounting hole and the ABS sensor hole are 12 mm to 20 mm.

[0016] In some optional embodiments, the diameter or side length of the airbag base is 200 mm-300 mm, and the hole diameter of the airbag mounting hole is 10 mm-16 mm.

[0017] The beneficial effects of the present application are as follows: the present application provides a trailer axle that is cast in one step, in which the middle section of the axle, the support arm, the airbag support arm, the brake mounting plate and the bearing sleeve are cast in one step, which can effectively solve many problems such as loose bolts and desoldering, and reduce driving risks. At the same time, an ABS sensor hole is integrated on the brake mounting plate to avoid the installation of additional mounting parts. It has light weight, simple structure, few faults, long service life, low noise, and improves safety and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1 A front view of a trailer axle cast in one step according to an embodiment of the present application;

[0020] Figure 2 This is a side view of a trailer axle cast in one step according to an embodiment of the present application. DETAILED DESCRIPTION

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. The components of the embodiments of the present application generally described and shown in the drawings herein can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application, but merely represents selected embodiments of the present application. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present application without making any creative efforts shall fall within the scope of protection of this application.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0024] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "front and back," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended only to facilitate the description of this application and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," "third," etc., etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0026] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0027] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0028] The features and performance of the present application are further described in detail below with reference to the embodiments.

[0029] like Figure 1-Figure 2 As shown, the utility model proposes a trailer axle cast in one step, including an axle assembly and a support arm assembly, the axle assembly including an axle middle section 1 and bearing sleeves 2 located at both ends, the support arm assembly including a support arm 3 and an airbag support arm 4, the axle middle section intersects the axes of the support arm and the airbag support arm at right angles, the support arm and the airbag support arm are respectively arranged on both sides of the axle middle section, the axes of the support arm and the airbag support arm coincide with or are arranged in parallel and staggered, the axle middle section and the support arm and the airbag support arm are cast in one step; brake mounting plates 5 are respectively provided at both ends of the axle middle section.

[0030] The bearing sleeve and the axle middle section are cast at one time, or inserted into the shaft holes at both ends of the axle middle section and positioned and locked by locating pins.

[0031] The brake mounting plate and the axle middle section are cast in one piece, and the brake mounting plate is provided with a brake mounting hole 6 and an ABS sensor hole 7. The ABS sensor hole is provided on the brake mounting plate to avoid the need for a separate component to support the ABS sensor.

[0032] Bosses 8 are provided on both sides of the support arm near one end of the mid-axle section. These bosses are provided with multiple bolt holes 9 for mounting the shock absorber bracket. The support arms are symmetrically arranged front-to-back along the same side of the mid-axle section, and bushing holes 10 are provided at the ends away from the mid-axle section. Mounting the shock absorber bracket on the support arm eliminates the need to mount the shock absorber bracket on the mid-axle section, further simplifies the structure of the mid-axle section, and facilitates single-shot casting.

[0033] The airbag support arm is symmetrically arranged along the other side of the middle section of the axle. A round or square airbag base 11 is provided at the end of the airbag support arm away from the middle section of the axle. An airbag mounting hole 12 is provided on the airbag base, and the airbag base is connected to the airbag by bolts.

[0034] The support arm and the airbag support arm are I-shaped structures or hollow cylindrical structures with grooves on both sides, which reduce the weight of the support arm and the airbag support arm and strengthen the product structure.

[0035] The outer diameter or side length of the middle section of the axle is 120mm-200mm, the diameter of the bolt through hole is 12mm-18mm, and the diameter of the bushing hole is 30mm-180mm.

[0036] The bearing sleeve is provided with two bearing seats 13, and the diameter of the bearing seats is 50mm-120mm.

[0037] The diameter of the brake mounting hole and the ABS sensor wire hole is 12mm-20mm.

[0038] The diameter or side length of the airbag base is 200mm-300mm, and the aperture of the airbag mounting hole is 10mm-16mm.

[0039] The middle section of the axle can be a round, square or rectangular structure, which is convenient for designing the layout according to different vehicle models.

[0040] The above is only a preferred embodiment of this intellectual achievement, but this intellectual achievement should not be limited to the contents disclosed in this embodiment and the accompanying drawings. All equivalents or modifications completed without departing from the spirit disclosed in this utility model fall within the scope of protection of this utility model.

Claims

1. A trailer axle cast in one step, characterized by: The vehicle comprises an axle assembly and a support arm assembly, wherein the axle assembly comprises an axle middle section and bearing sleeves at both ends, and the support arm assembly comprises a support arm and an airbag support arm, wherein the axle middle section intersects perpendicularly with the axes of the support arm and the airbag support arm, and the support arm and the airbag support arm are respectively arranged on both sides of the axle middle section, and the axes of the support arm and the airbag support arm coincide with or are arranged parallel and staggered; The middle section of the axle, the support arm and the airbag support arm are cast in one piece; Brake mounting plates are respectively provided at both ends of the middle section of the axle.

2. A one-shot cast trailer axle according to claim 1, characterized in that The bearing sleeve and the axle middle section are cast at one time, or inserted into the shaft holes at both ends of the axle middle section and locked in position by positioning pins.

3. A one-shot cast trailer axle according to claim 2, characterized in that The brake mounting plate and the axle middle section are cast in one piece, and a brake mounting hole and an ABS sensor hole are provided on the brake mounting plate.

4. A one-shot cast trailer axle according to claim 2 or 3, characterized in that The support arm is provided with bosses on both sides of one end close to the middle section of the axle, and the bosses are provided with multiple bolt holes for installing the shock absorber bracket. The support arm is symmetrically arranged front and back along the same side of the middle section of the axle, and a bushing hole is provided at the end away from the middle section of the axle.

5. A one-shot cast trailer axle according to claim 4, characterized in that The airbag supporting arm is symmetrically arranged along the other side of the middle section of the axle. A round or square airbag base is provided at the end of the airbag supporting arm away from the middle section of the axle, and an airbag mounting hole is provided on the airbag base.

6. A one-shot cast trailer axle according to claim 5, characterized in that The support arm and the airbag supporting arm are I-shaped structures or hollow cylindrical structures with grooves on both sides.

7. A one-shot cast trailer axle according to claim 6, characterized in that The outer diameter or side length of the middle section of the axle is 120mm-200mm, the aperture of the bolt through hole is 12mm-18mm, and the aperture of the bushing hole is 30mm-180mm.

8. A one-shot cast trailer axle according to claim 7, characterized in that The bearing sleeve is provided with two bearing positions, and the diameter of the bearing positions is 50mm-120mm.

9. The one-shot cast trailer axle according to claim 3, characterized in that The apertures of the brake mounting hole and the ABS sensor hole are 12mm-20mm.

10. The one-shot cast trailer axle according to claim 6, characterized in that The diameter or side length of the airbag base is 200mm-300mm, and the aperture of the airbag mounting hole is 10mm-16mm.

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