Suspension guide arm

Abstract

The utility model relates to a suspension guide arm which comprises an arm body, a mounting portion used for mounting an axle is arranged in the middle of the arm body, the front portion of the mounting portion is a front arm body, the rear portion of the mounting portion is a rear arm body, and the rear arm body is provided with an air bag mounting seat. The front arm body comprises a left shell and a right shell, and the left shell and the right shell are buckled to form the front arm body. According to the suspension guide arm, the front arm body is formed by buckling the left shell on the left side and the right shell on the right side, the welding number and the length of welding seams can be reduced, particularly, the arrangement of the welding seams at the vertical stress position is reduced, then the strength is improved, meanwhile, the front arm body is manufactured through the shells, and the weight of the arm body is reduced. And moreover, the left shell and the right shell are of shell-shaped structures, so that the preparation efficiency is high, and the quality of the prepared product is stable.

Description

Technical Field

[0001] The utility model relates to the field of vehicles, in particular to a guiding arm in a vehicle. Background Art

[0002] A suspension device is one of the conventional accessories of transportation vehicles such as trailers and semi-trailers. The existing suspension device includes a guiding arm. One end of the guiding arm is used to connect a bracket on a vehicle frame, the other end is connected to an airbag, and an axle is installed in the middle of the guiding arm.

[0003] For the existing suspension guiding arm, the arm body generally includes a plate skin that is horizontally arranged and surrounds the arm body for one week. There are two vertical support plates arranged between the upper and lower plate skins. The plate skin is generally formed by combining multiple plates. The plate skins and between the plate skin and the support plate are connected by welding. For the existing suspension guiding arm, the manufacturing process of the arm body requires a lot of welding, the process is complex, and at the same time, too many welds will also affect the mechanical strength of the arm body. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a guiding arm, aiming to solve the problems that: when the existing suspension guiding arm is manufactured by using a plate skin and a support plate, the process is complex and the welds affect the mechanical strength of the arm body.

[0005] The utility model provides a suspension guiding arm. The suspension guiding arm includes an arm body. An installation part for installing an axle is arranged in the middle of the arm body. The front part of the installation part is a front arm body, the rear part of the installation part is a rear arm body, and an airbag mounting seat is arranged on the rear arm body. The front arm body includes a left shell and a right shell, and the left shell and the right shell are buckled to form the front arm body.

[0006] Preferably, the left shell and the right shell are integrally formed by rolling.

[0007] Preferably, the left shell and the right shell include a shell bottom plate and a side plate that is arranged on the outer periphery of the shell bottom plate and is in a closed ring shape or an open ring shape.

[0008] More preferably, the side plate is provided with an opening at the rear part of the front arm body.

[0009] Preferably, a front hoop is arranged at the rear part of the front arm body, a rear hoop is arranged at the front part of the rear arm body, the front hoop and the rear hoop enclose an axle mounting hole, and the axle mounting hole is used for inserting an axle; the front hoop and the rear hoop are connected in a detachable manner.

[0010] More preferably, both the front hoop and the rear hoop include an L-shaped plate, and the bent parts of the two L-shaped plates extend into the middle of the front arm body or the middle of the rear arm body.

[0011] More preferably, folding plates extending outward are provided at both ends of the L-shaped plate, and mounting holes are provided on the folding plates; the folding plates of the front hoop and the rear hoop are symmetrically arranged and connected by bolts passing through the mounting holes.

[0012] Preferably, a connecting plate is further provided between the left housing and the right housing, and the left housing and the right housing are respectively welded to both side end faces of the connecting plate.

[0013] Compared with the prior art, the suspension guide arm provided by the present invention has the following beneficial effects:

[0014] For the above-mentioned suspension guide arm, the rear arm body can adopt a conventional structure in the prior art. However, at the front arm body, it is formed by buckling the left housing on the left side and the right housing on the right side. When buckling, the left housing and the right housing can be connected by a buckle or by welding. Compared with the arm body in the prior art, by buckling the left housing and the right housing to form the front arm body, the number of welds and the length of the welds can be reduced, especially the welds at the vertically stressed parts can be reduced, thereby improving the strength and reducing the weight of the arm body.

[0015] Furthermore, the above-mentioned left housing and right housing are of a shell-like structure, and the shell-like structure can be integrally formed by rolling or other methods. The preparation efficiency is high, the quality of the prepared product is stable, the production efficiency of the suspension guide arm disclosed by the present invention is high, and the preparation difficulty is low. At the same time, the left housing and right housing of the shell-like structure can be lighter in weight than the existing front arm body under the same bearing capacity, and thus the weight of the suspension guide arm can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art.

[0017] Obviously, the drawings in the following description are only some specific embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0018] Figure 1 It is a three-dimensional structural view of the suspension guide arm in Embodiment 1 of the present invention.

[0019] Figure 2 It is a bottom view of the suspension guide arm in Embodiment 1 of the present invention.

[0020] Figure 3 It is a top view of the suspension guide arm in Embodiment 1 of the present invention.

[0021] Figure 4 It is a side view of the suspension guide arm in Embodiment 1 of the present invention

[0022] 1 Forearm body; 2 Rear arm body; 3 Folding plate; 4 Bolt; 5 Left housing; 6 Right housing; 7 Front hoop; 8 Rear hoop. Detailed implementation manner

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0024] Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] It should be noted that all directional indications (such as front, rear, inner, outer, up, down, left, right, front, rear...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If this specific posture changes, the directional indications will also change accordingly.

[0026] In addition, the descriptions such as "first" and "second" in the present invention are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0027] In the present invention, unless otherwise clearly defined and limited, the terms "connection", "fixation", etc. shall be understood in a broad sense. For example, "fixation" may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0029] Embodiment 1

[0030] This embodiment provides a suspension guide arm, which includes an arm body. An installation part for installing an axle is provided in the middle of the arm body. The front part of the installation part is a front arm body 1, and the rear part of the installation part is a rear arm body 2. The above-mentioned front arm body 1, rear arm body 2 and installation part can be an integral structure or a split structure. For example, the installation parts are respectively a front hoop 7 connected to the front arm body 1 and a rear hoop 8 connected to the rear arm body 2. An airbag mounting seat is provided on the rear arm body 2. The front arm body 1 includes a left shell 5 and a right shell 6, and the left shell 5 and the right shell 6 are buckled to form the front arm body 1.

[0031] For the above suspension guide arm, the rear arm body 2 can adopt a conventional structure in the prior art. However, at the front arm body 1, it is formed by buckling the left shell 5 on the left side and the right shell 6 on the right side. When buckling, the left shell 5 and the right shell 6 can be connected by a buckle or by welding. Compared with the arm body of the prior art, by buckling the left shell 5 and the right shell 6 to form the front arm body 1, the number of welds and the weld length can be reduced, especially the welds at the vertical force-bearing parts can be reduced, thereby improving the strength and reducing the weight of the arm body.

[0032] Furthermore, the above-mentioned left shell 5 and right shell 6 are of a shell-like structure and can be integrally formed by rolling or other means. The shell-like structure is prepared by rolling or other means, with high preparation efficiency and stable product quality. The suspension guide arm disclosed in the preparation example has high production efficiency and low preparation difficulty.

[0033] Specifically, in this embodiment, the left shell 5 and the right shell 6 are integrally formed by rolling, such as rolling an iron plate in a rolling mill. By integrally forming through rolling, the quality is stable and the preparation rate is high.

[0034] Specifically, in this embodiment, the left shell 5 and the right shell 6 include a shell bottom plate and a closed-ring or open-ring side plate provided on the outer periphery of the shell bottom plate. That is, the shell includes a shell bottom plate, which is the side plate on the left or right side of the front arm body 1; the shell also includes a side plate, and the side plate forms the plate-like structure of the upper, lower and front parts of the arm body. The rear part of the front arm body 1 can be set as a sealed structure, and at this time the side plate is in a closed ring shape. The rear part of the front arm body 1 can be set as an open shape, and at this time the side plate is in an open ring shape; when the rear part of the side plate of the front arm body is open, the opening can be blocked by the installation part.

[0035] Specifically, in this embodiment, the arm body is of a split design. A front hoop 7 is provided at the rear part of the front arm body 1, and a rear hoop 8 is provided at the front part of the rear arm body 2. The front hoop 7 and the rear hoop 8 enclose an axle installation hole, that is, the installation part, and the axle installation hole is used to insert an axle; the front hoop 7 and the rear hoop 8 are connected in a detachable manner.

[0036] More specifically, in this embodiment, the front hoop 7 and the rear hoop 8 both include L-shaped plates. The bent parts of the two L-shaped plates extend into the middle of the front arm body 1 or the middle of the rear arm body 2, that is, the axle mounting holes are formed by buckling the two L-shaped plates. The bent parts of the L-shaped plates extend forward into the middle of the front arm body 1 or the middle of the rear arm body 2. In this way, the connection strength of the L-shaped plates is also improved.

[0037] More specifically, this embodiment also provides a connection method for the front hoop 7 and the rear hoop 8: both ends of the L-shaped plate are provided with folded plates 3 extending outward, and mounting holes are provided on the folded plates 3; the folded plates 3 of the front hoop 7 and the rear hoop 8 are symmetrically arranged and are connected by bolts 4 passing through the mounting holes.

[0038] Specifically, in this embodiment, in order to improve the connection strength between the left housing 5 and the right housing 6 and avoid damage at the weld, a connecting plate is further provided between the left housing 5 and the right housing 6, and the left housing 5 and the right housing 6 are respectively welded to the two side end faces of the connecting plate. In this embodiment, welding the end faces of the left housing 5 and the right housing 6 to the side of the connecting plate, changing the edge-to-edge welding to edge-to-face welding, can improve the welding strength; moreover, the connecting plate in the middle can also improve the overall strength of the front arm body 1. It should be noted that the connecting plate can be a whole plate extending from the upper part to the lower part of the front arm body 1 or an annular plate with a hollow middle part. When the connecting plate is a whole plate, the strength can be further improved.

[0039] Of course, the above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or any direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention and should be protected by the present invention.

Claims

1. A suspension guide arm, characterized in that: It includes an arm body, a mounting portion for mounting an axle is arranged in the middle of the arm body, the front portion of the mounting portion is the front arm body, the rear portion of the mounting portion is the rear arm body, the front arm body includes a left shell body and a right shell body, and the left shell body and the right shell body are buckled together to form the front arm body.

2. The suspension guide arm according to claim 1, characterized in that: The left housing and the right housing are integrally formed by rolling.

3. The suspension guide arm according to claim 1 or 2, characterized in that: The left shell and the right shell include a shell bottom plate and a closed ring-shaped or open ring-shaped side plate arranged on the outer periphery of the shell bottom plate.

4. The suspension guide arm according to claim 3, characterized in that: The side plate is provided with an opening at the rear of the forearm body.

5. The suspension guide arm according to claim 1, characterized in that: A front clamp is provided at the rear of the front arm body, and a rear clamp is provided at the front of the rear arm body. The front clamp and the rear clamp form an axle mounting hole, and the axle mounting hole is used to insert the axle; the front clamp and the rear clamp are connected in a detachable manner.

6. The suspension guide arm according to claim 5, characterized in that: The front clamp and the rear clamp both include L plates, and the bending parts of the two L plates extend into the middle part of the front arm body or the middle part of the rear arm body.

7. The suspension guide arm according to claim 6, characterized in that: Both ends of the L-plate are provided with folding plates extending outward, and mounting holes are provided on the folding plates; the folding plates of the front clamp and the rear clamp are symmetrically arranged and connected by bolts passing through the mounting holes.

8. The suspension guide arm according to claim 1, characterized in that: A connecting plate is further provided between the left shell and the right shell, and the left shell and the right shell are respectively welded to both side end surfaces of the connecting plate.

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