Cab integrated air spring for heavy truck

Abstract

The utility model discloses a cab integrated air spring for a heavy truck, which relates to the technical field of cab suspension systems and comprises a plastic piston, and one side of the plastic piston is respectively provided with an air inlet hole and an air outlet hole. The valve element is fixedly installed in the plastic piston through a fixing piece, and the valve element is used for communicating the air inlet hole with the exhaust hole; the movable part is movably installed on the side, away from the air inlet hole, of the plastic piston, and a guide groove is formed in the movable part; and the center position of the swing arm is rotationally installed in the valve element, a guide pin is arranged at one end of the swing arm, the guide pin is installed on the guide groove in a sliding mode, and an air channel hole is formed in the other end of the swing arm and used for controlling opening and closing of the exhaust hole. By arranging the swing arm for controlling the air inlet and the air outlet of the air spring, the problem that an external height adjusting valve takes a lot of time to adjust the height uniformity of a vehicle cab and the hardness of the air spring is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of cab suspension systems, in particular to a cab integrated air spring for heavy trucks. Background Art

[0002] Air springs are sealed containers filled with compressed air, leveraging the compressibility of gas to achieve their elastic action. Air springs have ideal nonlinear elastic properties, and with a height adjustment device installed, the vehicle's height remains constant despite load changes.

[0003] The air spring currently installed on vehicles is connected to an external height adjustment valve through an air tank intake hose, and the external height adjustment valve is inserted into a hose connected to the air spring to control the intake and exhaust. The height of the vehicle cab and the hardness of the air spring are adjusted by the intake volume of the external height adjustment valve.

[0004] Since air springs are wearing parts and two are installed at the front and rear of the cab, the installation process becomes complicated and takes up cab installation space. In addition, a lot of working time is required to install the external height adjustment valve to adjust the height uniformity of the vehicle cab and the hardness of the air springs. Utility Model Content

[0005] The main purpose of the utility model is to provide a cab-integrated air spring for heavy trucks, which can effectively solve the problems in the background technology by providing a regulating valve that directly controls the air intake and exhaust of the air spring.

[0006] To achieve the above-mentioned object, the utility model provides a cab-integrated air spring for heavy trucks, comprising a plastic piston, a valve core, a movable part and a swing arm;

[0007] An air inlet hole and an air exhaust hole are respectively opened on one side of the plastic piston;

[0008] The valve core is fixedly installed in the plastic piston through a fixing piece, and the valve core is used to connect the air inlet hole and the air exhaust hole;

[0009] The movable part is movably mounted on a side of the plastic piston away from the air inlet, and a guide groove is provided on the movable part;

[0010] The center position of the swing arm is rotatably installed in the valve core, one end of the swing arm is provided with a guide pin, and the guide pin is slidably installed on the guide groove, and the other end of the swing arm is provided with an airway hole, and the airway hole is used to control the opening and closing of the exhaust hole.

[0011] On the basis of the above technical solution, the present invention can also be improved as follows.

[0012] Furthermore, the guide groove is arranged in a Z shape.

[0013] Furthermore, the airway hole is also used to regulate the exhaust volume of the exhaust hole.

[0014] Furthermore, when the movable part is displaced, the guide pin slides on the guide groove, and the movement direction of the airway hole is opposite to the movement direction of the guide pin.

[0015] Furthermore, the exhaust holes are provided in a plurality, and when the plurality of exhaust holes are respectively connected to the airway holes, the exhaust volumes of the plurality of exhaust holes are different.

[0016] The beneficial effects of the utility model are as follows: the utility model provides a cab integrated air spring for heavy trucks, which has the following advantages:

[0017] This new design incorporates a built-in height adjustment valve on the basis of an air spring, eliminating the need for an external height adjustment valve. The air intake hose of the air tank is directly connected to the integrated air spring. The built-in height adjustment valve can achieve uniformity between the vehicle cab height and the air spring hardness, while also improving the sensitivity of air inlet and outlet, saving installation and adjustment time for vehicle maintenance. Furthermore, this structure can be applied to air springs in heavy-duty truck cabs on the market.

[0018] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and to implement it according to the contents of the description, the following is a detailed description of the preferred embodiments of the present invention with the accompanying drawings. The specific implementation methods of the present invention are given in detail in the following embodiments and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of a cab-integrated air spring for a heavy-duty truck proposed in the present invention.

[0021] Figure 2 This is a schematic structural diagram of an exhaust hole in a cab-integrated air spring for a heavy truck proposed in the utility model.

[0022] In the figure: 1. Air inlet; 2. Exhaust hole; 3. Plastic piston; 4. Fixed part; 5. Movable part; 6. Guide groove; 7. Swing arm; 8. Guide pin; 9. Valve core; 10. Airway hole. DETAILED DESCRIPTION

[0023] The following is combined with Figure 1-2The principles and features of the present invention are described, and the examples provided are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. The following paragraphs describe the present invention in more detail by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description and claims. It should be noted that the drawings are greatly simplified and not to exact scale, and are intended solely to facilitate and clearly illustrate the embodiments of the present invention.

[0024] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended only to describe specific embodiments and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] like Figure 1-2 As shown, the utility model provides a cab integrated air spring for heavy trucks, comprising a plastic piston 3, a valve core 9, a movable part 5 and a swing arm 7;

[0027] An air inlet 1 and an air exhaust 2 are respectively provided on one side of the plastic piston 3;

[0028] The valve core 9 is fixedly installed in the plastic piston 3 through the fixing member 4, and the valve core 9 is used to connect the air inlet 1 and the air outlet 2;

[0029] The movable member 5 is movably mounted on a side of the plastic piston 3 away from the air inlet 1. A guide groove 6 is provided on the movable member 5. The guide groove 6 is arranged in a Z shape.

[0030] The center position of the swing arm 7 is rotatably mounted in the valve core 9. One end of the swing arm 7 is provided with a guide pin 8, and the guide pin 8 is slidably mounted on the guide groove 6. The other end of the swing arm 7 is provided with an airway hole 10, and the airway hole 10 is used to control the opening and closing of the exhaust hole 2. The airway hole 10 is also used to regulate the exhaust volume of the exhaust hole 2. The exhaust holes 2 are arranged in a plurality. When the plurality of exhaust holes 2 are respectively connected to the airway holes 10, the exhaust volumes of the plurality of exhaust holes 2 are different.

[0031] In this embodiment, when the vehicle is in operation, the movable member 5 moves up and down with the bumps of the cab, thereby driving the guide slot 6 on the movable member 5 to move. The end of the swing arm 7 provided with the guide pin 8 slides in the guide slot 6, thereby driving the end of the swing arm 7 provided with the airway hole 10 to move left and right. Through the left and right movement of the end of the swing arm 7 provided with the airway hole 10, the airway hole 10 opens and closes the exhaust hole 2, thereby achieving the air intake of the air intake hole 1 and the exhaust of the exhaust hole 2, thereby achieving the function of a regulating valve;

[0032] Furthermore, by integrating a height adjustment valve into the air spring, eliminating the need for an external height adjustment valve, the air tank intake hose is directly connected to the integrated air spring. This built-in height adjustment valve allows the vehicle cab height and air spring firmness to be aligned, improving air inlet and outlet sensitivity and reducing installation and adjustment time for vehicle maintenance. Furthermore, this structure can be applied to commercially available heavy-duty truck cab air springs.

[0033] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Any ordinary technician in this industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with this profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A cab integrated air spring for heavy trucks, characterized in that: include: A plastic piston (3), wherein an air inlet (1) and an air outlet (2) are respectively provided on one side of the plastic piston (3); A valve core (9), the valve core (9) being fixedly mounted in the plastic piston (3) via a fixing member (4), the valve core (9) being used to connect the air inlet (1) and the air outlet (2); A movable part (5), the movable part (5) is movably mounted on a side of the plastic piston (3) away from the air inlet (1), and a guide groove (6) is provided on the movable part (5); A swing arm (7), the center position of which is rotatably mounted in the valve core (9), one end of which is provided with a guide pin (8), which is slidably mounted on the guide groove (6), and the other end of which is provided with an airway hole (10), which is used to control the opening and closing of the exhaust hole (2).

2. The cab-integrated air spring for a heavy truck according to claim 1, characterized in that: The guide groove (6) is arranged in a Z shape.

3. The cab-integrated air spring for a heavy truck according to claim 1, characterized in that: The airway hole (10) is also used to regulate the exhaust volume of the exhaust hole (2).

4. The cab-integrated air spring for a heavy truck according to claim 1, characterized in that: When the movable part (5) is displaced, the guide pin (8) slides on the guide groove (6), and the movement direction of the airway hole (10) is opposite to the movement direction of the guide pin (8).

5. The cab-integrated air spring for a heavy truck according to claim 3, characterized in that: The exhaust holes (2) are arranged in a plurality, and when the plurality of exhaust holes (2) are respectively connected to the airway holes (10), the exhaust volumes of the plurality of exhaust holes (2) are different.

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