Carrying arm structure

Abstract

The utility model discloses a kind of supporting arm structures, comprising: supporting arm body, bushing, bearing seat, lifting lug, supporting arm body includes main supporting arm, support plate, end plate, main supporting arm is the groove-like structure body of section U shape, the back of main supporting arm is embedded with reinforcing part, support plate, end plate and main supporting arm are configured as the special-shaped tubular body of one end closed, support plate, end plate and main supporting arm are welded and fixed, bushing is through supporting arm body and extends to both sides and is set up.The utility model passes through optimization structure, the bending moment distribution of supporting arm bearing is improved, the quality of supporting arm is lightened, material cost is saved, the stress state of connecting piece between axle and two supporting arms is improved, the connection reliability of supporting arm and axle is improved, vehicle fuel consumption and non-spring mass are reduced, the driving smoothness of vehicle is improved. Greatly promote the safety and reliability of whole vehicle.The utility model structure is simple, processing and manufacturing are convenient, strength distribution is uniform, less space is occupied, cost is low and service life is long.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to a support arm structure. Background Technology

[0002] The support arm is usually located at the bottom of the vehicle body and is used to connect the frame and drive shaft.

[0003] Because the support arms are in a combined bending and torsional motion state, the left and right support arms are prone to change under stress, causing irregular movement of the axle. Furthermore, the torsional motion of the left and right support arms will affect the stress state of the bolts, reduce the reliability of the connection between the support arms and the axle, and pose a significant safety hazard.

[0004] like Figure 1 The image shows the support arm structure of a conventional tricycle. The support arm is generally made of rectangular square tubes. Since the rectangular square tubes are extruded, their wall thickness is limited and cannot meet the requirements of the vehicle. The support arms currently produced have grooved support plates welded to the sides to increase their strength. This structure is complex, occupies a lot of space and is bulky. It is difficult to process and manufacture, the strength distribution of the support arm is uneven, the reliability is low, and it is inconvenient to install and maintain. The cost is also high, and further improvements are needed.

[0005] Therefore, there is an urgent need for engineers and technicians in this field to develop a support structure that is simple in structure, easy to process and manufacture, has uniform strength distribution, occupies little space, is easy to install and maintain, has low cost and long service life.

[0006] This utility model further optimizes and improves the existing support arm structure and adopts sheet metal welding technology to optimize the spatial layout, thereby greatly improving its structural strength and fully meeting vehicle requirements. Utility Model Content

[0007] The technical problem to be solved by this utility model is to provide a support arm structure that is simple in structure, easy to process and manufacture, has uniform strength distribution, occupies little space, is easy to install and maintain, has low cost and long service life.

[0008] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0009] A support arm structure includes: a support arm body, a liner, a bearing seat, and a lifting lug. The support arm body is vertically disposed on the lower part of a vehicle frame. The support arm body includes a main support arm, a support plate, and an end plate. The main support arm is a U-shaped channel structure. The support plate and the end plate are embedded in the main support arm. A reinforcing part is embedded in the back of the main support arm. The support plate and the end plate are constructed as an irregularly shaped tubular body with one end closed. The support plate and the end plate are welded and fixed to the main support arm. The liner and the bearing seat are respectively disposed at both ends of the support arm body. The central axis of the liner and the bearing seat coincides with the central plane of the support arm body. The liner penetrates the support arm body and extends to both sides. The lifting lug is disposed adjacent to the bearing seat on the outer side of the main support arm.

[0010] In the above structure, the reinforcing part is a groove embedded in the main support arm. The groove is arranged along the length direction of the main support arm, and the center plane of the groove coincides with the center plane of the main support arm. A first arc surface and a second arc surface are embedded on both sides of the front of the main support arm. The first arc surface and the second arc surface are symmetrically arranged between the liner and the bearing seat.

[0011] In the above structure, the main support arm includes a first end and a second end. The first end and the second end are respectively provided with a first round hole and a second round hole for installing the liner and the bearing seat. The first round hole and the second round hole are provided through the main support arm and the support plate. The first round hole and the second round hole are respectively matched with the liner and the bearing seat. The liner and the bearing seat are respectively welded to the main support arm and the support plate as a whole.

[0012] In the above structure, the top surfaces of the first end and the second end are flat, and the top surfaces of the first end and the second end are smoothly connected to the first arc surface and the second arc surface.

[0013] In the above structure, the end plate is vertically disposed inside the second end, and the main support arm and the support plate are respectively welded to the end plate circumferentially.

[0014] In the above structure, the support plate is embedded in the upper inner side of the main support arm, the support plate matches the main support arm, and the support plate is welded to the main support arm along both sides.

[0015] In the above structure, there are two support arm bodies, which are symmetrically arranged on the lower part of the vehicle frame.

[0016] In the above structure, the main support arm, support plate, and end plate are all made of Q235 carbon structural steel.

[0017] The beneficial effects of this utility model are as follows:

[0018] This utility model employs sheet metal forming and welding processes to press the support arm from a sheet metal body into a groove, and then welds the support plate and end plate together. This significantly improves the structural strength of the support arm body, improves the stress state of the connection between the axle spanning the left and right support arms and the connecting parts between the left and right support arms, enhances the reliability of the connection between the support arm and the axle, and ensures the safety of the axle system. Simultaneously, the optimized structure improves the bending moment distribution borne by the support arm, thereby reducing the weight of the support arm, saving material costs, reducing vehicle fuel consumption, and reducing the unsprung mass of the vehicle, improving the vehicle's ride comfort. This greatly enhances the safety and reliability of the entire vehicle. This utility model has a simple structure, is easy to manufacture, has uniform strength distribution, occupies little space, has low cost, and a long service life. Attached Figure Description

[0019] Figure 1 This is a structural diagram of an existing support arm structure;

[0020] Figure 2 This is a schematic diagram of an embodiment of the support arm structure of this utility model;

[0021] Figure 3 This is a front view of an embodiment of the support arm structure of this utility model;

[0022] Figure 4 This is a top view of an embodiment of the support arm structure of this utility model;

[0023] Figure 5 This is a cross-sectional view of an embodiment of the support arm structure of this utility model.

[0024] In the diagram, 1-main support arm, 2-support plate, 3-end plate, 4-liner, 5-bearing seat, 6-lifting lug, 7-side lining. Detailed Implementation

[0025] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0026] like Figure 2-5The bracket structure shown includes: a bracket body, a liner 4, a bearing seat 5, and a lifting lug 6. The bracket body includes a main bracket 1, a support plate 2, and an end plate 3. The main bracket 1 is a U-shaped channel structure. The support plate 2 and the end plate are embedded in the main bracket 1. The support plate 2, the end plate 3, and the main bracket 1 are constructed as an irregularly shaped tubular body with one end closed. A reinforcing part is embedded in the back of the main bracket 1. The support plate 2 and the end plate 3 are welded and fixed to the main bracket 1 respectively. The liner 4 and the bearing seat 5 are respectively located at both ends of the bracket body. The central axis of the liner 4 and the bearing seat 5 coincides with the central plane of the bracket body. The liner 4 passes through the bracket body and extends to both sides. The lifting lug 6 is located on the outside of the main bracket 1 adjacent to the bearing seat 5.

[0027] Specifically, in this embodiment, there are two support arm bodies, which are respectively located on the left and right sides of the bottom of the vehicle frame. The upper parts of the left and right support arm bodies are connected to the vehicle frame, and the lower parts are connected to the vehicle via bearings.

[0028] Specifically, in this embodiment, the main support arm 1 is formed into a groove structure by sheet metal pressing, and then the support plate 2, end plate 3 and the main support arm 1 are welded together.

[0029] Specifically, in this embodiment, the support plate 2 is embedded in the main support arm 1 and welded together to improve the stress distribution of the support arm (mainly bearing bending moment) and the stress state between the support arm and the integral axle 1, thereby improving the connection reliability.

[0030] In a preferred embodiment of the present invention, the reinforcing part 8 is a groove embedded in the main support arm. The groove is arranged along the length direction of the main support arm 1, and the center plane of the groove coincides with the center plane of the main support arm 1. A first arc surface and a second arc surface are embedded on both sides of the front of the main support arm 1. The first arc surface and the second arc surface are symmetrically arranged between the liner 4 and the bearing seat 5.

[0031] Specifically, in this embodiment, the back of the main support arm 1 is provided with a reinforcing part, which is a groove embedded in the main support arm 1. The groove is a stamped groove, which increases the strength of the main support arm 1. The front sides of the main support arm 1 are provided with a first arc surface and a second arc surface. The first arc surface and the second arc surface are cut and shaped according to the force and spatial structure of the main support arm 1. The first arc surface and the second arc surface are the result of optimization based on ensuring the strength of the support arm body and the reliability of the connection between the arm and the axle.

[0032] In a preferred embodiment of the present invention, the main support arm 1 includes a first end and a second end. The first end and the second end are respectively provided with a first round hole and a second round hole for mounting the liner 4 and the bearing seat 5. The first round hole and the second round hole are provided through the main support arm 1 and the support plate 2. The first round hole and the second round hole are respectively matched with the liner 4 and the bearing seat 5. The liner 4 and the bearing seat 5 are respectively welded to the main support arm 1 and the support plate 2 as a whole.

[0033] Specifically, in this embodiment, the liner 4 is disposed at the first end, the bearing seat 5 is disposed at the second end, the first end of the main support arm 1 is connected to the frame, and the second end is movably connected to the axle through the bearing.

[0034] Specifically, in this embodiment, the bearing housing 5 includes a circular connecting part and a housing body, which are integrally formed. The circular connecting part is embedded in a second circular hole and is welded and fixed in the second circular hole. The outer side of the housing body is provided with multiple connecting holes, and the inside of the housing body is provided with a slot for installing the bearing.

[0035] In a preferred embodiment of the present invention, the top surfaces of the first end and the second end are planes, and the top surfaces of the first end and the second end are smoothly connected to the first arc surface and the second arc surface.

[0036] Specifically, in this embodiment, the top surfaces of the first and second ends are smoothly connected to the first and second arc surfaces to avoid cracks that could reduce service life. In addition, it can also prevent injuries to the body during installation and use.

[0037] In a preferred embodiment of this utility model, the end plate 3 is vertically disposed inside the second end, and the main support arm 1 and the support plate 2 are respectively welded to the end plate 3 in a circumferential manner.

[0038] Specifically, in this embodiment, the end plate 3 serves to provide support and increase strength.

[0039] In a preferred embodiment of the present invention, the support plate 2 is embedded in the upper inner side of the main support arm 1, the support plate 2 matches the main support arm 1, and the support plate 2 is welded to the main support arm 1 along both sides.

[0040] Specifically, in this embodiment, the thickness of the support plate 2 is greater than or equal to the thickness of the main support arm 1.

[0041] In a preferred embodiment of this utility model, there are two support arm bodies, which are symmetrically arranged on the lower part of the vehicle frame.

[0042] Specifically, in this embodiment, two support arm bodies are vertically arranged at the lower part of the frame, and the two support arm bodies are respectively connected to the frame and the axle.

[0043] In a preferred embodiment of this utility model, the main support arm 1, the support plate 2, and the end plate 3 are all made of Q235 carbon structural steel.

[0044] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A support arm structure, comprising: The support arm body, liner, bearing seat, and lifting lug are characterized in that the support arm body is vertically installed at the lower part of the vehicle frame, the support arm body includes a main support arm, a support plate, and an end plate, the main support arm is a U-shaped channel structure, a reinforcing part is embedded in the back of the main support arm, the support plate and the end plate are both embedded in the main support arm, the support plate and the end plate are constructed as an irregularly shaped tubular body with one end closed, the support plate and the end plate are respectively welded and fixed to the main support arm, the liner and the bearing seat are respectively located at both ends of the support arm body, the central axis of the liner and the bearing seat coincides with the central plane of the support arm body, the liner penetrates the support arm body and extends to both sides, and the lifting lug is located adjacent to the bearing seat on the outside of the main support arm.

2. The support arm structure according to claim 1, characterized in that, The reinforcing part is a groove embedded in the main support arm. The groove is arranged along the length direction of the main support arm, and the center plane of the groove coincides with the center plane of the main support arm. A first arc surface and a second arc surface are embedded on both sides of the front of the main support arm. The first arc surface and the second arc surface are symmetrically arranged between the liner and the bearing seat.

3. The support arm structure according to claim 2, characterized in that, The main support arm includes a first end and a second end. The first end and the second end are respectively provided with a first circular hole and a second circular hole for installing the liner and the bearing seat. The first circular hole and the second circular hole are provided through the main support arm and the support plate. The first circular hole and the second circular hole are respectively matched with the liner and the bearing seat. The liner and the bearing seat are respectively welded to the main support arm and the support plate as a whole.

4. The support arm structure according to claim 3, characterized in that, The top surfaces of the first end and the second end are flat, and the top surfaces of the first end and the second end are smoothly connected to the first arc surface and the second arc surface.

5. The support arm structure according to claim 3, characterized in that, The end plate is vertically disposed inside the second end, and the main support arm and the support plate are respectively welded to the end plate circumferentially.

6. The support arm structure according to claim 1, characterized in that, The support plate is embedded in the upper inner side of the main support arm, and the support plate matches the main support arm. The support plate is welded to the main support arm along both sides.

7. The support arm structure according to claim 2, characterized in that, There are two support arm bodies, which are symmetrically arranged on the lower part of the vehicle frame.

8. The support arm structure according to claim 1, characterized in that, The main support arm, support plate, and end plate are all made of Q235 carbon structural steel.

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