Semi-floating front overhang upper support of commercial vehicle cab

Abstract

The utility model discloses a commercial vehicle cab semi-floating front overhang upper support which comprises a metal plate stamping structure and an installation assembly, and the metal plate stamping structure is formed by welding a front plate, a left side connecting plate, a right side connecting plate and a bottom connecting plate. Two first long slots are formed in the bottom end of the front plate, and second long slots are formed in the middle positions of the front ends of the left side connecting plate and the right side connecting plate. Structural adjustment and design optimization are carried out on the semi-floating front overhang upper support, and on the basis that low cost and generalization are achieved and the strength requirement is met, the design and production efficiency of a commercial vehicle can be effectively improved, and the development period is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of commercial vehicle cab suspension systems, in particular to a semi-floating front suspension upper bracket of a commercial vehicle cab. Background Art

[0002] With the development of the automotive industry, the requirements for lightweight and low cost are becoming increasingly higher, especially in the field of medium and heavy-duty trucks, where lightweight and low cost are being greatly promoted and applied.

[0003] In medium and heavy trucks, the front suspension upper bracket carries the cab and has high strength requirements. The semi-floating front suspension upper bracket used in domestic medium and heavy trucks is mainly a casting structure. In order to meet the strength requirements, the volume and weight of the casting are relatively large, and the cost increases accordingly. At the same time, the mold development cycle is long when the casting structure is used. If the design is optimized in the later stage, the mold needs to be redeveloped, so the versatility is also poor, which is not conducive to lightweight and universal development. Summary of the invention

[0004] In order to solve the above technical problems, the utility model provides a semi-floating front suspension upper bracket for a commercial vehicle cab. In order to have a basic understanding of some aspects of the disclosed embodiments, a simple summary is given below. This summary is not a general review, nor is it intended to identify key / important components or describe the scope of protection of these embodiments. Its only purpose is to present some concepts in a simple form as a preface to the detailed description that follows.

[0005] The utility model adopts the following technical solutions:

[0006] Provided is a semi-floating front suspension upper bracket for a commercial vehicle cab, comprising: a sheet metal stamping structure and a mounting assembly, wherein the sheet metal stamping structure is welded by a front plate, a left connecting plate, a right connecting plate and a bottom connecting plate; two first elongated slots are provided at the bottom end of the front plate, and second elongated slots adapted to the first elongated slots are provided at the middle positions of the front ends of the left connecting plate and the right connecting plate; both sides of the bottom connecting plate are bent downward to form a first welding portion that fits the left connecting plate and the right connecting plate; the upper positions of the front ends of the left connecting plate and the right connecting plate are bent outward to form a second welding portion that fits the front plate.

[0007] Furthermore, both side edges of the lower half of the front plate are contracted inward to form a plug-in board, and the bottom end of the plug-in board is provided with the first elongated slot at positions corresponding to the left connecting plate and the right connecting plate; the second welding portion is in contact with and welded to the upper half of the front plate.

[0008] Furthermore, the left connecting plate and the right connecting plate are symmetrically arranged, and both are composed of a side panel body and a frustum plate; the frustum plate is arranged at the lower front end position of the side panel body, the second elongated slot is opened at the middle front end position of the side panel body, and the second welding portion is located at the upper front end position of the side panel body.

[0009] Furthermore, an assembly through hole is provided on the truncated cone plate, and the thickness of the truncated cone plate is greater than the thickness of the side plate body.

[0010] Furthermore, weight-reducing holes are provided on the front plate, the left connecting plate and the right connecting plate.

[0011] Furthermore, the bottom connecting plate is composed of a bottom plate body and a rear plate, and the rear plate is arranged at the front end of the bottom plate body and tilted upward.

[0012] Furthermore, the sheet metal stamping structure is connected to the cab and the front suspension support through the mounting assembly; the mounting assembly includes: a first threaded fastener; the frustum plate is connected to the front suspension support through the first threaded fastener.

[0013] Furthermore, four front plate bolt holes are provided on the upper half of the front plate, two side plate bolt holes are provided on the left connecting plate and the right connecting plate, and four bottom plate bolt holes are provided on the bottom connecting plate; the installation assembly also includes: a second threaded fastener, a third threaded fastener and a fourth threaded fastener; the front plate is connected to the front surround of the cab through the second threaded fastener; the left connecting plate and the right connecting plate are connected to the side of the cab longitudinal beam through the third threaded fastener; the bottom connecting plate is connected to the bottom end of the cab longitudinal beam through the fourth threaded fastener.

[0014] The beneficial effects brought about by the utility model are as follows: the application adopts a sheet metal stamping structure, and the sheet metal stamping structure is welded by a front plate, a left connecting plate, a right connecting plate and a bottom connecting plate, and uses an installation component to connect the cab and the front suspension support. The application makes structural adjustments and design optimizations to the semi-floating front suspension upper bracket, which can effectively improve the design and production efficiency of commercial vehicles and shorten the development cycle on the basis of achieving low cost, universality and meeting strength requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is a schematic diagram of the installation of a semi-floating front suspension upper bracket of a commercial vehicle cab of the utility model;

[0017] Figure 2 This is a schematic diagram of the assembly of a semi-floating front suspension upper bracket of a commercial vehicle cab of the utility model;

[0018] Figure 3 The utility model is an exploded schematic diagram of a semi-floating front suspension upper bracket of a commercial vehicle cab. DETAILED DESCRIPTION

[0019] The following is a detailed description of the embodiments of the utility model in conjunction with the accompanying drawings. It should be clear that the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] like Figure 1-3 As shown, in some illustrative embodiments, a semi-floating front suspension upper bracket of a commercial vehicle cab is provided, comprising: a sheet metal stamping structure and a mounting assembly.

[0021] The sheet metal stamping structure is connected to the cab and the front suspension support 1 through the mounting assembly.

[0022] The sheet metal stamping structure is welded by the front plate 2, the left connecting plate 3, the right connecting plate 4 and the bottom connecting plate 5; the left connecting plate 3 and the right connecting plate 4 are symmetrically arranged on both sides of the bottom connecting plate 5, and the front plate 2 is located at the front end of the whole structure. The front end and the front side mentioned in this article refer to the side where the cab front wall 6 is located.

[0023] The front plate 2, the left connecting plate 3, the right connecting plate 4 and the bottom connecting plate 5 are all sheet metal parts, which are connected as a whole by welding. Compared with castings, the mold development cycle is shorter, and the possibility of adaptive design adjustment in the later stage is improved. Under the premise of meeting the strength, the weight and cost can be effectively reduced, and the fuel economy of the whole vehicle can be improved.

[0024] The front plate 2 is a rectangular plate body, and the two side edges of the lower half of the front plate 2 are contracted inward to form a plug-in plate 201, that is, the width of the plug-in plate 201 is greater than the width of the upper half of the front plate 2. This design ensures the connection strength between the upper half and the cab while reducing the space occupied by the lower half after being connected to the front suspension support 1, making the structure more compact.

[0025] Two first long slots 202 are provided at the bottom of the plug board 201, and the opening positions of the two first long slots 202 correspond to the left connecting plate 3 and the right connecting plate 4 respectively. Second long slots 203 are provided at the front middle positions of the left connecting plate 3 and the right connecting plate 4. Specifically, an arc-shaped avoidance notch is first provided, and then a second long slot 341 adapted to the first long slot 202 is provided on the arc-shaped avoidance notch. Adaptation here means that the first long slot 202 and the second long slot 341 are inserted into each other, so that the front plate 2, the left connecting plate 3 and the right connecting plate 4 are plugged and assembled.

[0026] The upper front ends of the left connecting plate 3 and the right connecting plate 4 are bent outward to form a second welding portion 342 that fits the front plate 2. Here, the bending outward means that the upper front ends of the left connecting plate 3 and the right connecting plate 4 are bent and extended in a direction away from each other to extend a portion of the plate body as the second welding portion 342. When the front plate 2, the left connecting plate 3 and the right connecting plate 4 are plugged and assembled into one, the second welding portion 342 contacts and welds the upper half of the front plate 2 to completely fix the three. The above structural design has the advantages of stable structure, high strength and easy welding.

[0027] The front plate 2, the left connecting plate 3 and the right connecting plate 4 are all provided with weight-reducing holes 7 to reduce the overall weight of the structure.

[0028] The two sides of the bottom connecting plate 5 are bent downward to form a first welding portion 501 that fits the left connecting plate 3 and the right connecting plate 4, that is, the first welding portion 501 contacts and welds the left connecting plate 3 and the right connecting plate 4. The bottom connecting plate 5 is composed of a bottom plate body 502 and a raised plate 503. The raised plate 503 is arranged at the front end of the bottom plate body 502 and tilted upward to provide sufficient space for the installation of the front suspension support 1.

[0029] The left connecting plate 3 and the right connecting plate 4 are symmetrically arranged, and both are composed of a side plate body 343 and a round table plate 344; the round table plate 344 is arranged at the lower front end of the side plate body 343, the second elongated slot 341 is arranged at the middle front end of the side plate body 343, and the second welding portion 342 is located at the upper front end of the side plate body 343. The round table plate 344 is provided with an assembly through hole 345, and the thickness of the round table plate 344 is greater than the thickness of the side plate body 343, forming a boss shape to increase the strength of the lower end.

[0030] The installation assembly includes: a first threaded fastener 3401, a second threaded fastener 26, a third threaded fastener 348 and a fourth threaded fastener 58. The threaded fastener mentioned herein refers to a connection structure in which a bolt and a nut are used in combination.

[0031] The frustum plate 344 is connected to the front suspension support 1 through the first threaded fastener 3401. Specifically, the bolt in the first threaded fastener 3401 passes through the assembly through hole 345 and the center sleeve in the front suspension support 1 and is tightened with a nut.

[0032] The upper half of the front plate 2 has four front plate bolt through holes 203 arranged in a matrix. The front plate 2 is connected to the cab front panel 6 via a second threaded fastener 26. Specifically, the bolts in the second threaded fastener 261 pass through the front plate bolt through holes 203 and the screw holes on the cab front panel 6 and are tightened using nuts.

[0033] Two side plate bolt through holes 346 are provided on the left connecting plate 3 and the right connecting plate 4, and the left connecting plate 3 and the right connecting plate 4 are connected to the side of the cab longitudinal beam 8 through the third threaded fastener 348. Four bottom plate bolt through holes 504 are provided on the bottom connecting plate 5, and the bottom connecting plate 5 is connected to the bottom end of the cab longitudinal beam 8 through the fourth threaded fastener 58.

[0034] The semi-floating front suspension upper bracket of the commercial vehicle cab of this embodiment has one end directly connected to the cab and the other end connected to the front suspension support 1. The specific installation process is as follows:

[0035] Step 1: Use the second threaded fastener 26, the third threaded fastener 348 and the fourth threaded fastener 58 to fix the sheet metal stamping structure on the cab;

[0036] Step 2: When the cab is installed, the sheet metal stamping structure is fixed to the front suspension support 1 using the first threaded fastener 3401 .

[0037] The semi-floating front suspension upper bracket of the commercial vehicle cab of this embodiment has an adaptive design for each part of the bracket, making the overall structural layout more reasonable and more versatile. It is more convenient to install and operate, and the development cycle of the bracket mold is shorter, which has advantages in product development cycle and assembly.

[0038] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A semi-floating front suspension upper bracket for a commercial vehicle cab, characterized in that: include: A sheet metal stamping structure and an installation assembly, wherein the sheet metal stamping structure is welded by a front plate, a left connecting plate, a right connecting plate and a bottom connecting plate; two first elongated slots are opened at the bottom end of the front plate, and second elongated slots adapted to the first elongated slots are opened at the middle positions of the front ends of the left connecting plate and the right connecting plate; both sides of the bottom connecting plate are bent downward to form a first welding portion that fits the left connecting plate and the right connecting plate; the upper positions of the front ends of the left connecting plate and the right connecting plate are bent outward to form a second welding portion that fits the front plate.

2. The semi-floating front suspension upper bracket of a commercial vehicle cab according to claim 1, characterized in that: The two side edges of the lower half of the front plate are contracted inward to form a plug-in board, and the bottom end of the plug-in board is provided with the first elongated slot at the position corresponding to the left connecting plate and the right connecting plate; the second welding portion is in contact with and welded to the upper half of the front plate.

3. The semi-floating front suspension upper bracket of a commercial vehicle cab according to claim 2, characterized in that: The left connecting plate and the right connecting plate are symmetrically arranged, and both consist of a side panel body and a frustum plate; the frustum plate is arranged at the lower front end position of the side panel body, the second elongated slot is opened at the middle front end position of the side panel body, and the second welding portion is located at the upper front end position of the side panel body.

4. The semi-floating front suspension upper bracket of a commercial vehicle cab according to claim 3 is characterized in that: An assembly through hole is provided on the frustum plate, and the thickness of the frustum plate is greater than the thickness of the side plate body.

5. The semi-floating front suspension upper bracket of a commercial vehicle cab according to claim 4, characterized in that: The front plate, the left connecting plate and the right connecting plate are all provided with weight-reducing holes.

6. The semi-floating front suspension upper bracket of a commercial vehicle cab according to claim 5, characterized in that: The bottom connecting plate is composed of a bottom plate body and a rear plate, wherein the rear plate is arranged at the front end of the bottom plate body and is inclined upward.

7. The semi-floating front suspension upper bracket of a commercial vehicle cab according to claim 6, characterized in that: The sheet metal stamping structure is connected to the cab and the front suspension support through the mounting assembly; The installation assembly includes: a first threaded fastener; the frustum plate is connected to the front suspension support via the first threaded fastener.

8. The semi-floating front suspension upper bracket of a commercial vehicle cab according to claim 7, characterized in that: The upper half of the front plate is provided with four front plate bolt through holes, the left connecting plate and the right connecting plate are both provided with two side plate bolt through holes, and the bottom connecting plate is provided with four bottom plate bolt through holes; The mounting assembly also includes: a second threaded fastener, a third threaded fastener and a fourth threaded fastener; the front plate is connected to the front enclosure of the cab via the second threaded fastener; the left connecting plate and the right connecting plate are connected to the side of the cab longitudinal beam via the third threaded fastener; the bottom connecting plate is connected to the bottom end of the cab longitudinal beam via the fourth threaded fastener.

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