Rear suspension support structure of semi-floating commercial vehicle cab

Abstract

The utility model discloses a semi-floating commercial vehicle cab rear suspension support structure, and belongs to the field of suspension supports. According to the technical scheme, the semi-floating type commercial vehicle cab rear suspension support structure comprises a first connecting part used for being connected with a commercial vehicle frame and a second connecting part used for being connected with a commercial vehicle cab, and a damping assembly is hinged to the lower end of the first connecting part. The damping assembly is provided with a telescopic end hinged to the bottom of the second connecting part, a rotary connecting piece is arranged on the first connecting part, and the end, away from the first connecting part, of the rotary connecting piece is hinged to the telescopic end; vertical vibration of the cab of the commercial vehicle can be restrained, when the commercial vehicle decelerates or accelerates, the rotary connecting piece can bear tensile force or pressure from the cab of the commercial vehicle in the horizontal direction, horizontal displacement of the cab of the commercial vehicle during speed changing is prevented, and the service life of the cab of the commercial vehicle is prolonged. And the driving experience of the commercial vehicle and the stability of the cab are further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of suspension brackets, and in particular relates to a rear suspension bracket structure of a semi-floating commercial vehicle cab. Background Art

[0002] The cab suspension is a device that elastically connects the frame and the cab. With the continuous upgrading of heavy-duty vehicle technology, the requirements for the driving comfort of the cab suspension are getting higher and higher. The semi-floating suspension system is mainly composed of two hard points at the front and rear connecting the cab and the frame, and the other two soft points connecting the cab and the frame.

[0003] However, the semi-floating suspension system has a simple structure and low cost, but its load-bearing capacity and stability are relatively weak, and its shock absorption performance is inferior to that of the full-floating suspension system. When encountering bumpy roads, the cab is still subject to certain vibrations and impacts. The traditional semi-floating cab suspension bracket design, although it has achieved the suspension and vibration isolation of the cab to a certain extent, still has problems of excessive vibration and obvious noise when driving on complex road conditions and at high speeds. Utility Model Content

[0004] The utility model provides a semi-floating commercial vehicle cab rear suspension bracket structure to solve at least one of the above technical problems.

[0005] The technical solution adopted by the utility model is:

[0006] A semi-floating commercial vehicle cab rear suspension bracket structure comprises a first connection part for connecting to a commercial vehicle frame and a second connection part for connecting to a commercial vehicle cab, wherein a shock absorbing assembly is hingedly connected to the lower end of the first connection part, and the shock absorbing assembly has a telescopic end hingedly connected to the bottom of the second connection part, and a rotating connection piece is provided on the first connection part, and an end of the rotating connection piece away from the first connection part is hingedly connected to the telescopic end.

[0007] Preferably, the first connecting portion includes a first bracket, a side wall of the first bracket is provided with a plurality of first mounting holes for connecting to a commercial vehicle frame, and the first bracket is fixed to the side wall of the commercial vehicle frame through the first mounting holes and bolts.

[0008] Preferably, the side wall of the first bracket is provided with a first connecting plate, and the first connecting plate is connected to the upper end surface or the lower end surface of the commercial vehicle frame by bolts.

[0009] Preferably, the second connecting portion includes a second bracket, the second bracket is provided with a second connecting plate, the second connecting plate is provided with a second mounting hole, and the second connecting plate is fixedly connected to the bottom connecting beam of the commercial vehicle cab through the second mounting hole and bolts.

[0010] Preferably, the second connecting plate is a U-shaped plate, the second mounting holes are arranged at both ends of the U-shaped plate, and the two side plates of the U-shaped plate are respectively located on both sides of the bottom connecting beam of the commercial vehicle cab.

[0011] Preferably, the rotating connector includes a pull rod, and both ends of the pull rod are respectively hinged to the upper end of the first bracket and the telescopic end of the shock absorbing assembly.

[0012] Preferably, the shock absorbing assembly includes a damping telescopic rod, which has a fixed sleeve and a sliding rod sliding in the inner cavity of the fixed sleeve, the sliding rod is hinged to the pull rod and the bottom of the second connecting plate at one end away from the fixed sleeve, the lower end of the fixed sleeve is hinged to the bottom of the first bracket, and spring seats are provided on the side walls of the fixed sleeve and the side walls of the sliding rod located outside the fixed sleeve, a shock absorbing spring is fixedly connected between the two spring seats, and a damping medium is provided in the fixed sleeve.

[0013] Preferably, the first bracket adopts a U-shaped bending design.

[0014] Preferably, the pull rod is a cast iron part.

[0015] Preferably, the angle between the damping telescopic rod and the first bracket is acute.

[0016] Due to the adoption of the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0017] 1. In the present application, when a commercial vehicle encounters a bumpy road during driving, the vertical vibration of the commercial vehicle cab can be suppressed by the shock-absorbing assembly, thereby greatly reducing the vibration amplitude of the commercial vehicle cab, thereby improving the driving experience and the driving posture of the commercial vehicle cab. When the commercial vehicle is decelerating or accelerating, the setting of the rotating connecting piece can withstand the horizontal tension or pressure from the commercial vehicle cab, preventing the horizontal displacement of the commercial vehicle cab when the commercial vehicle changes speed, thereby further improving the driving experience and the stability of the commercial vehicle cab.

[0018] 2. As a preferred embodiment of the utility model, multiple groups of first mounting holes are equidistantly distributed in a square shape. The first bracket is firmly fixed to the commercial vehicle frame through multiple groups of first mounting holes and bolts to prevent the first bracket from loosening or position shifting due to vibration, thereby ensuring the overall shock absorption performance of the rear suspension bracket structure.

[0019] The provision of the first connecting plate can further increase the stability of the connection between the first bracket and the commercial vehicle frame.

[0020] The first bracket adopts a U-shaped bending design, so that the main body of the first bracket can maintain sufficient strength, improve the vertical and lateral rigidity, and improve the load-bearing capacity of the first bracket.

[0021] 3. As a preferred embodiment of the present invention, the second bracket can be firmly fixed to the bottom connecting beam of the commercial vehicle cab by means of the second connecting plate and bolts.

[0022] Furthermore, the second connecting plate is a U-shaped plate, the second mounting holes are arranged at both ends of the U-shaped plate, and the two side plates of the U-shaped plate are respectively located on both sides of the bottom connecting beam of the commercial vehicle cab, and then the second connecting plate is connected and fixed to the bottom connecting beam of the commercial vehicle cab by bolts and the second mounting holes, which can increase the stability of the connection node.

[0023] 4. As a preferred embodiment of the present invention, the setting of the pull rod can withstand the load from the horizontal direction of the cab and reduce the horizontal displacement of the commercial vehicle cab during the speed change process. The pull rod is a cast iron part, which can effectively reduce the stress concentration at the connecting hole.

[0024] 5. As a preferred embodiment of the utility model, the combination of a shock-absorbing spring and a damping telescopic rod can provide reliable support for the cab of a commercial vehicle, effectively attenuate vibration and impact, and achieve the purpose of vibration isolation and vibration reduction. The angle between the damping telescopic rod and the first bracket is an acute angle. This design can mainly transfer the load from the cab to the damping telescopic rod, and at the same time decompose a part of the load to the pull rod, thereby dispersing the force at the mounting hole of the first bracket and reducing stress concentration. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is one of the structural schematic diagrams of a specific implementation method of the utility model;

[0026] Figure 2 This is the second structural diagram of a specific implementation method of the utility model;

[0027] Figure 3 It is a schematic diagram of the structure of the pull rod in a specific implementation manner of the utility model.

[0028] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0029] In the attached picture:

[0030] 1. First bracket; 101. First mounting hole; 102. First connecting plate; 2. Second bracket; 201. Second connecting plate; 202. Second mounting hole; 3. Pull rod; 4. Damping telescopic rod; 401. Shock-absorbing spring. DETAILED DESCRIPTION

[0031] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in the form of examples in conjunction with the accompanying drawings.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0033] In addition, in the description of the present invention, it should be understood that the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the present utility model, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "implementation method", "example", "one embodiment", "example" or "specific example" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0036] Reference Figure 1-3 A semi-floating commercial vehicle cab rear suspension bracket structure includes a first connection part for connecting to a commercial vehicle frame and a second connection part for connecting to a commercial vehicle cab. A shock absorbing assembly is hinged at the lower end of the first connection part. The shock absorbing assembly has a telescopic end hinged to the bottom of the second connection part. A rotating connection piece is provided on the first connection part, and an end of the rotating connection piece away from the first connection part is hinged to the telescopic end.

[0037] It can be understood by those skilled in the art that the rear suspension bracket structure of the commercial vehicle cab is a connecting component connected between the commercial vehicle cab and the frame. By supporting the commercial vehicle cab to a suspended state, the vibration isolation effect is achieved, and the stability of the cab posture during driving and the driving comfort are improved. When the rear suspension bracket structure of the commercial vehicle cab is installed, it is fixedly connected to the commercial vehicle frame through the first connecting part, and then fixedly connected to the bottom of the commercial vehicle cab through the second connecting part. The installation steps are simple and efficient, and the structure is relatively simple, easy to disassemble and repair, and can continue to play the advantages of low cost and high reliability, and expand its application range. When the commercial vehicle encounters a bumpy road during driving, the vertical vibration of the commercial vehicle cab can be suppressed by the shock absorbing assembly, greatly reducing the vibration amplitude of the commercial vehicle cab, thereby improving the driving experience and the driving posture of the commercial vehicle cab. When the commercial vehicle is in the process of deceleration or acceleration, the setting of the rotating connector can withstand the horizontal tension or pressure from the commercial vehicle cab, preventing the horizontal displacement of the commercial vehicle cab when the commercial vehicle is changing speed, and further improving the driving experience and the stability of the commercial vehicle cab.

[0038] As a specific implementation of the first connecting portion, refer to Figure 1-Figure 2 The first connection part includes a first bracket 1, and the side wall of the first bracket 1 is provided with a plurality of first mounting holes 101 for connecting to the commercial vehicle frame, and the first bracket 1 is fixed to the side wall of the commercial vehicle frame through the first mounting holes 101 and bolts. It should be noted that the plurality of first mounting holes 101 are evenly distributed in a square shape, and the first bracket 1 is firmly fixed to the commercial vehicle frame through the plurality of first mounting holes 101 and bolts, so as to prevent the first bracket 1 from loosening or position shifting due to vibration, thereby ensuring the overall shock absorption performance of the rear suspension bracket structure.

[0039] Furthermore, a first connecting plate 102 is provided on the side wall of the first bracket 1, and the first connecting plate 102 is connected to the upper end face or the lower end face of the commercial vehicle frame by bolts. The provision of the first connecting plate 102 can further increase the stability of the connection between the first bracket 1 and the commercial vehicle frame.

[0040] The first bracket 1 adopts a U-shaped bending design, so that the main body of the first bracket 1 can maintain sufficient strength, improve the vertical and lateral rigidity, and improve the load-bearing capacity of the first bracket 1.

[0041] As a specific implementation of the second connecting portion, refer to Figure 1-Figure 3The second connecting part includes a second bracket 2, a second connecting plate 201 is provided on the second bracket 2, a second mounting hole 202 is provided on the second connecting plate 201, and the second connecting plate 201 is fixedly connected to the bottom connecting beam of the commercial vehicle cab through the second mounting hole 202 and bolts. The second bracket 2 can be firmly fixed to the bottom connecting beam of the commercial vehicle cab through the second connecting plate 201 and the bolts.

[0042] Furthermore, the second connecting plate 201 is a U-shaped plate, and the second mounting holes 202 are arranged at both ends of the U-shaped plate. The two side plates of the U-shaped plate are respectively located on both sides of the bottom connecting beam of the commercial vehicle cab. Then, the second connecting plate 201 is connected and fixed to the bottom connecting beam of the commercial vehicle cab by bolts and the second mounting holes 202, which can increase the stability of the connection node.

[0043] As a specific embodiment of the rotating connector, refer to Figure 1-Figure 3 The rotating connecting member includes a pull rod 3, and the two ends of the pull rod 3 are respectively hinged to the upper end of the first bracket 1 and the telescopic end of the shock absorbing assembly. The setting of the pull rod 3 can withstand the load from the horizontal direction of the cab and reduce the horizontal displacement of the commercial vehicle cab during the speed change process. The pull rod 3 is a cast iron part, which can effectively reduce the stress concentration at the connecting hole.

[0044] As a specific implementation of the shock absorbing assembly, refer to Figure 1-Figure 2 The shock absorbing assembly includes a damping telescopic rod 4, which has a fixed sleeve and a sliding rod sliding in the inner cavity of the fixed sleeve. The sliding rod is hinged to the bottom of the pull rod 3 and the second connecting plate 201 at one end away from the fixed sleeve. The lower end of the fixed sleeve is hinged to the bottom of the first bracket 1. The side wall of the fixed sleeve and the side wall of the sliding rod located outside the fixed sleeve are both provided with spring seats. A shock absorbing spring 401 is fixedly connected between the two spring seats, and a damping medium is provided in the fixed sleeve. The combination of the shock absorbing spring 401 and the damping telescopic rod 4 can provide reliable support for the cab of the commercial vehicle, and effectively attenuate vibration and impact, thereby achieving the purpose of vibration isolation and vibration reduction. The angle between the damping telescopic rod 4 and the first bracket 1 is an acute angle. This design can mainly transfer the load from the cab to the damping telescopic rod 4, and at the same time decompose a part of the load to the pull rod 3, thereby dispersing the force at the mounting hole of the first bracket 1 and reducing stress concentration.

[0045] The parts not described in the present invention can be realized by adopting or drawing on the existing technology.

[0046] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0047] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A rear suspension bracket structure for a semi-floating commercial vehicle cab, characterized in that: The invention comprises a first connection part for connecting to a commercial vehicle frame and a second connection part for connecting to a cab of the commercial vehicle, wherein a shock absorbing assembly is hingedly connected to the lower end of the first connection part, and the shock absorbing assembly has a telescopic end hingedly connected to the bottom of the second connection part, and a rotating connection piece is provided on the first connection part, and an end of the rotating connection piece away from the first connection part is hingedly connected to the telescopic end.

2. A semi-floating commercial vehicle cab rear suspension bracket structure according to claim 1, characterized in that: The first connecting portion comprises a first bracket (1), a side wall of the first bracket (1) being provided with a plurality of first mounting holes (101) for connecting to a commercial vehicle frame, and the first bracket (1) being fixed to the side wall of the commercial vehicle frame via the first mounting holes (101) and bolts.

3. A semi-floating commercial vehicle cab rear suspension bracket structure according to claim 2, characterized in that: A first connecting plate (102) is provided on the side wall of the first bracket (1), and the first connecting plate (102) is connected to the upper end surface or the lower end surface of the commercial vehicle frame by means of bolts.

4. A semi-floating commercial vehicle cab rear suspension bracket structure according to claim 1, characterized in that: The second connection portion comprises a second bracket (2), the second bracket (2) being provided with a second connection plate (201), the second connection plate (201) being provided with a second mounting hole (202), and the second connection plate (201) being fixedly connected to a bottom connection beam of a commercial vehicle cab via the second mounting hole (202) and bolts.

5. A semi-floating commercial vehicle cab rear suspension bracket structure according to claim 4, characterized in that: The second connecting plate (201) is a U-shaped plate, the second mounting holes (202) are arranged at both ends of the U-shaped plate, and the two side plates of the U-shaped plate are respectively located on both sides of the bottom connecting beam of the commercial vehicle cab.

6. The rear suspension bracket structure of a semi-floating commercial vehicle cab according to claim 1, characterized in that: The rotating connecting member comprises a pull rod (3), and the two ends of the pull rod (3) are respectively hinged to the upper end of the first bracket (1) and the telescopic end of the shock absorbing assembly.

7. A semi-floating commercial vehicle cab rear suspension bracket structure according to claim 6, characterized in that: The shock absorbing assembly comprises a damping telescopic rod (4), wherein the damping telescopic rod (4) has a fixed sleeve and a sliding rod sliding in the inner cavity of the fixed sleeve, wherein the sliding rod is hinged to the pull rod (3) and the bottom of the second connecting plate (201) at one end away from the fixed sleeve, and the lower end of the fixed sleeve is hinged to the bottom of the first bracket (1), and spring seats are provided on the side wall of the fixed sleeve and the side wall of the sliding rod located outside the fixed sleeve, and a shock absorbing spring (401) is fixedly connected between the two spring seats, and a damping medium is provided in the fixed sleeve.

8. The rear suspension bracket structure of a semi-floating commercial vehicle cab according to claim 2, characterized in that: The first bracket (1) adopts a U-shaped bending design.

9. A semi-floating commercial vehicle cab rear suspension bracket structure according to claim 6, characterized in that: The pull rod (3) is a cast iron part.

10. The rear suspension bracket structure of a semi-floating commercial vehicle cab according to claim 7, characterized in that: The angle between the damping telescopic rod (4) and the first bracket (1) is an acute angle.

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