Truck front suspension electric control suspension

Abstract

The utility model provides a truck front overhang electric control suspension which comprises a plate spring, an acceleration sensor, a height sensor assembly, an air spring and a damping adjustable shock absorber, one end of the plate spring is hinged to a frame, the other end of the plate spring is hinged to an axle, the top of the air spring is connected with the frame through a first upper support, and the top of the air spring is connected with a second upper support. The bottom of the air spring is connected with an axle through a first lower support, an upper hanging ring of the damping-adjustable shock absorber is hinged to a frame, a lower hanging ring of the damping-adjustable shock absorber is hinged to the plate spring, and the acceleration sensor is fixed to the outer wall of the damping-adjustable shock absorber. Through the cooperation of the sensor, the air spring and the damping-adjustable shock absorber, the smoothness and operation stability of vehicle driving are effectively improved, the vehicle state can be better adjusted according to road conditions, and the vehicle driving comfort level is higher.

Description

TECHNICAL FIELD

[0001] The utility model relates to truck front suspension technical field, concretely relates to a truck front suspension electric control suspension. BACKGROUND

[0002] The truck is a kind of traffic tool commonly used for transporting materials, with the development of society and the improvement of living standards, people's demand for truck is not only loading and transporting goods, and there is certain requirement to the comfort and stability of truck operation, such as wishing to have higher comfort in long-distance or poor road condition, and better steering stability in good road condition such as high speed.In truck, the greatest influence on the subjective comfort of driver is truck front suspension.And the mainstream front suspension structure on the market is leaf spring suspension, its suspension stiffness is too large, affects driving comfort, and in poor road condition or emergency braking condition, vehicle pitch and roll are obvious, not only affect comfort, safety is also low;At the same time, leaf spring suspension can only be passively damped by the elasticity of leaf spring itself, and cannot adjust damping effect according to actual driving condition, steering stability is low.Therefore, a truck front suspension capable of effectively improving driving safety and considering comfort is needed. SUMMARY

[0003] To solve the problems in the background art, the utility model provides a truck front suspension electric control suspension, including leaf spring, acceleration sensor, height sensor assembly, air spring and damping adjustable shock absorber, one end of the leaf spring is hinged with the frame, the other end of the leaf spring is hinged with the axle, the top of the air spring is connected with the frame by first upper support, the bottom of the air spring is connected with the axle by first lower support, the upper ring of the damping adjustable shock absorber is hinged with the frame, the lower ring of the damping adjustable shock absorber is hinged with the leaf spring, the acceleration sensor is fixed on the outer wall of the damping adjustable shock absorber.

[0004] Preferably, the damping adjustable shock absorber is of external electromagnetic valve type structure, the external electromagnetic valve is located at the lower part of the damping adjustable shock absorber, the external electromagnetic valve is located at the side of the damping adjustable shock absorber close to the frame, and the axis direction of the external electromagnetic valve is parallel to the axis direction of the damping adjustable shock absorber.

[0005] Preferably, the acceleration sensor includes on-spring acceleration sensor and off-spring acceleration sensor, the on-spring acceleration sensor is located at the upper part of the damping adjustable shock absorber and at the side of the damping adjustable shock absorber close to the frame, and the off-spring acceleration sensor is located at the side of the external electromagnetic valve of the damping adjustable shock absorber, and the included angle between the off-spring acceleration sensor and the external electromagnetic valve is 90°.

[0006] Preferably, the upper suspension ring of the damping adjustable shock absorber is articulated with the vehicle frame through a second upper bracket. The second upper bracket is in a "U" shape. One end of the convex part of the second bracket is articulated with the upper suspension ring of the shock absorber. The two end plates on the concave side of the second bracket are respectively fixedly connected to the vehicle frame through bolts.

[0007] Preferably, the lower suspension ring of the damping adjustable shock absorber is articulated with the leaf spring through a second lower bracket. The second lower bracket is in the shape of a long plate. The length direction of the second lower bracket is the same as the length direction of the leaf spring. One end of the second bracket is fixed to the leaf spring. A shackle is fixed at the other end of the second bracket. The axis direction of the shackle is parallel to the width direction of the leaf spring. A bushing is coaxially and rotatably connected inside the shackle. The lower suspension ring of the damping adjustable shock absorber is coaxially and fixedly connected to the bushing.

[0008] Preferably, the first upper bracket includes a bottom plate. Connection guard plates are fixed on the periphery of the bottom plate. The top and bottom of the connection guard plates respectively extend above and below the bottom plate. The bottom plate is connected to the top of the air spring. The connection guard plates are connected to the vehicle frame.

[0009] Preferably, the first lower bracket includes a top plate and two Z-shaped plates. Each Z-shaped plate includes two horizontal plates and a vertical plate. One horizontal plate of the Z-shaped plate is fixedly connected to the bottom of the top plate. The other horizontal plate of the Z-shaped plate is connected to the top plate through an L-shaped plate. The two Z-shaped plates are symmetrically and spaced apart.

[0010] Preferably, the height sensor assembly includes a vehicle body height sensor and a connecting rod. The vehicle body height sensor is connected to the vehicle body through a bracket. The rotating arm of the vehicle body height sensor is articulated with one end of the connecting rod. The other end of the connecting rod is connected to the axle. The length direction of the connecting rod is arranged vertically. The rotation direction of the rotating arm of the vehicle body height sensor is in the vertical plane.

[0011] Preferably, it further includes a controller. The controller is electrically connected to the acceleration sensor, the height sensor assembly, the air spring, and the damping adjustable shock absorber respectively.

[0012] The beneficial effects of the present utility model are as follows:

[0013] The height sensor assembly in the application calculates the current vehicle body height value through the swing angle signal, and the controller charges and discharges the air spring through the height signal to realize the lifting of the vehicle body height, the stiffness of the air spring relative to the leaf spring suspension is reduced, and the smoothness index of the vehicle can be improved; the acceleration sensor identifies the acceleration value of the vehicle height direction, the controller obtains the acceleration value, and adjusts the current of the damping adjustable shock absorber through the internal control algorithm, so that the damping is continuously adjustable, and the damping effect is improved. Through the setting of the sensors, the air spring and the damping adjustable shock absorber, the vehicle body height and the damping effect can be adjusted according to the driving condition, and compared with the traditional leaf spring suspension, the driving comfort of the vehicle is higher, and the air spring and the damping adjustable shock absorber can effectively improve the smoothness and maneuverability of the vehicle driving. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a whole structure schematic view of the utility model;

[0015] Figure 2 It is a whole structure side view of the utility model;

[0016] Figure 3 It is a first upper support structure schematic view of the utility model;

[0017] Figure 4 It is a first lower support structure schematic view of the utility model;

[0018] Figure 5 It is a second upper support structure schematic view of the utility model;

[0019] Figure 6 It is a second lower support structure schematic view of the utility model.

[0020] Marked number in the drawing: 1, leaf spring; 2, spring acceleration sensor; 3, spring acceleration sensor; 4, vehicle body height sensor; 5, connecting rod; 6, air spring; 7, damping adjustable shock absorber; 71, external electromagnetic valve; 8, first upper support; 81, bottom plate; 82, connecting guard plate; 9, first lower support; 91, upper horizontal plate; 92, vertical plate; 93, lower horizontal plate; 94, L-shaped plate; 95, top plate; 10, second upper support; 11, second lower support; 12, controller. DETAILED DESCRIPTION

[0021] In order to make the utility model more clear and obvious, the technical scheme of the utility model is further explained in detail in the following description, drawings and examples, it should be understood that the given example is only one of the implementation manners, and does not represent all examples.

[0022] In this article, the terms "inner, outer, upper, lower" are established based on the positional relationship shown in the drawings, and the corresponding positional relationship may change accordingly according to the different drawings, therefore, it cannot be understood as an absolute limitation on the scope of protection.

[0023] In combination with the drawings Figure 1 - the drawings Figure 6 A truck front suspension electric control suspension includes a leaf spring 1, an acceleration sensor, a height sensor assembly, an air spring 6, and a damping adjustable shock absorber 7. One end of the leaf spring 1 is hinged to the frame, and the other end of the leaf spring 1 is hinged to the axle. The top of the air spring 6 is connected to the frame through a first upper support 8, and the bottom of the air spring 6 is connected to the axle through a first lower support 9. The upper ring of the damping adjustable shock absorber 7 is hinged to the frame, and the lower ring of the damping adjustable shock absorber 7 is hinged to the leaf spring 1. The acceleration sensor is fixed to the outer wall of the damping adjustable shock absorber 7.

[0024] Specifically, the damping adjustable shock absorber 7 is an external electromagnetic valve 71 structure. The external electromagnetic valve 71 is located at the lower part of the damping adjustable shock absorber 7. The external electromagnetic valve 71 is located on the side of the damping adjustable shock absorber 7 close to the frame. The axis direction of the external electromagnetic valve 71 is parallel to the axis direction of the damping adjustable shock absorber 7.

[0025] The acceleration sensor includes an on-spring acceleration sensor 2 and an off-spring acceleration sensor 3. The on-spring acceleration sensor 2 is located at the upper part of the damping adjustable shock absorber 7 and on the side of the damping adjustable shock absorber 7 close to the frame. The off-spring acceleration sensor 3 is located on the side of the external electromagnetic valve 71 of the damping adjustable shock absorber 7. The included angle between the off-spring acceleration sensor 3 and the external electromagnetic valve 71 is 90°. That is, the off-spring acceleration sensor 3 and the external electromagnetic valve 71 are distributed along the circumference of the damping adjustable shock absorber 7. The circumference of the damping adjustable shock absorber 7 is evenly divided into four intervals. The off-spring acceleration sensor 3 and the external electromagnetic valve 71 are located in adjacent two intervals respectively, and the off-spring acceleration sensor 3 and the external electromagnetic valve 71 are located at the middle position of the respective interval.

[0026] The on-spring acceleration sensor 2 and the off-spring acceleration sensor 3 are respectively welded and fixed to the damping adjustable shock absorber 7. The on-spring acceleration sensor 2 and the off-spring acceleration sensor 3 are fixed to the damping adjustable shock absorber 7, which can reduce the assembly process of the acceleration sensor. There is no need to set the acceleration sensor through the traditional disassembly and assembly of bolts, which saves time and effort.

[0027] Specifically, the upper ring of the damping adjustable shock absorber 7 is hinged to the frame through a second upper support 10. The second upper support 10 is in the shape of a "J" character. One end of the convex part of the second support is hinged to the upper ring of the shock absorber. The two ends of the concave side of the second support are respectively fixedly connected to the frame through bolts.

[0028] Specifically, the lower hanging ring of the damping adjustable shock absorber 7 is hinged with the leaf spring 1 through the second lower support 11, the second lower support 11 is in the shape of a long plate, the length direction of the second lower support 11 is consistent with the length direction of the leaf spring 1, one end of the second support is fixed with the leaf spring 1, the other end of the second support is fixed with a loop, the axis direction of the loop is parallel to the width direction of the leaf spring 1, a bushing is coaxially and rotationally connected in the loop, and the lower hanging ring of the damping adjustable shock absorber 7 is coaxially and fixedly connected with the bushing. More specifically, the leaf spring 1 and the second lower support 11 are fixed by bolts, and the materials of the leaf spring 1 and the second lower support 11 are both 51CrV4 spring steel.

[0029] Specifically, the first upper support 8 includes a bottom plate 81, a connecting guard plate 82 is fixed on the periphery of the bottom plate 81, the top and bottom of the connecting guard plate 82 extend above and below the bottom plate 81 respectively, the bottom plate 81 is connected with the top of the air spring 6 by bolts, and the connecting guard plate 82 is connected with the vehicle frame by bolts. The connecting guard plate 82 can prevent the damage of sand and soil to the bladder skin of the air spring 6 to a certain extent and plays a protective role. More specifically, the first upper support 8 is a sheet metal tailor-welded structural member, that is, the connecting guard plate 82 is formed by a bending process and is fixed with the bottom plate 81 by welding, which can reduce the manufacturing cost while ensuring the structural strength.

[0030] Specifically, the first lower support 9 includes a top plate 95 and two Z-shaped plates, each Z-shaped plate includes two horizontal plates and a vertical plate 92, the two horizontal plates are an upper horizontal plate 91 and a lower horizontal plate 93, the upper horizontal plate 91 is parallel to the lower horizontal plate 93, the vertical plate 92 is connected with one end of the upper horizontal plate 91 and the lower horizontal plate 93 respectively at both ends, the upper horizontal plate 91, the lower horizontal plate 93 and the vertical plate 92 form a Z-shaped structure and are an integral structure, one horizontal plate of the Z-shaped plate is fixedly connected with the bottom of the top plate 95, the other horizontal plate of the Z-shaped plate is connected with the top plate 95 through an L-shaped plate 94, and the two Z-shaped plates are symmetrically and spacedly distributed. Since the part of the axle near the wheel is in a "upward" state, when the first lower support 9 is connected with the axle, the axle is located between the two Z-shaped plates, so that the first lower support 9 and the axle can be avoided from interfering with each other. The L-shaped plate 94 can strengthen the connection between the Z-shaped plate and the top plate 95, enhance the structural strength of the first lower support 9, and ensure that the lower horizontal plate 93 of the Z-shaped plate is parallel to the top plate 95.

[0031] More specifically, the vertical plate 92 of the Z-shaped plate and the upper horizontal plate 91 are provided with reinforcing ribs for reinforcement, and the two plate bodies of the L-shaped plate 94 are also provided with reinforcing ribs for reinforcement. The first lower support 9 is a sheet metal tailor-welded structural member.

[0032] Specifically, the height sensor assembly comprises a vehicle body height sensor 4 and a connecting rod 5, the vehicle body height sensor 4 is connected with the vehicle body through a support, a rotating arm of the vehicle body height sensor 4 is hinged with one end of the connecting rod 5, the other end of the connecting rod 5 is connected with the axle, the length direction of the connecting rod 5 is arranged vertically, and the rotating direction of the rotating arm of the vehicle body height sensor 4 is in the vertical plane. When the vehicle is running, the rotating arm is driven to rotate through the connecting rod 5, the vehicle body height sensor 4 obtains a swing angle signal through the rotation of the rotating arm, and the current vehicle body height is calculated through the swing angle signal. More specifically, the end of the connecting rod 5 away from the vehicle body height sensor 4 is connected with a first lower support 9.

[0033] Specifically, the controller 12 is further included, and the controller 12 is electrically connected with the acceleration sensor, the height sensor assembly, the air spring 6 and the damping adjustable shock absorber 7 respectively. The controller 12 obtains the detected data of the acceleration sensor and the height sensor assembly, and controls the air spring 6 and the damping adjustable shock absorber 7 to work according to the sensor data respectively. More specifically, the controller 12 controls the air spring 6 to discharge air by controlling the action of the air valve, so as to control the air spring 6, which is a conventional technical means and will not be described here. The air suspension system program and the damping adjustable system program are integrated in the controller 12, and the two sets of system programs can be controlled independently or cooperatively, so as to control the air spring 6 and the damping adjustable shock absorber 7 independently or cooperatively. The controller 12 is fixed with the frame through a sheet metal support.

[0034] It should be understood that the truck front suspension electric control suspension has two groups, and the two groups of suspensions are respectively located on the two sides of the vehicle, wherein the controller 12 is one, and the controller 12 is arranged on any one side of the vehicle.

[0035] Although the embodiments of the present application have been shown and described, those skilled in the art can make various changes, modifications, replacements and variations to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A truck front suspension electrically controlled suspension, characterized by: It includes a leaf spring (1), an acceleration sensor, a height sensor assembly, an air spring (6) and a damping adjustable shock absorber (7). One end of the leaf spring (1) is hinged to the vehicle frame, and the other end of the leaf spring (1) is hinged to the axle. The top of the air spring (6) is connected to the vehicle frame through a first upper bracket (8), and the bottom of the air spring (6) is connected to the axle through a first lower bracket (9). The upper eyelet of the damping adjustable shock absorber (7) is hinged to the vehicle frame, and the lower eyelet of the damping adjustable shock absorber (7) is hinged to the leaf spring (1). The acceleration sensor is fixed to the outer wall of the damping adjustable shock absorber (7).

2. A front suspension electrically controlled suspension for a truck as claimed in claim 1, characterized in that: The damping adjustable shock absorber (7) is of an external solenoid valve (71) type structure. The external solenoid valve (71) is located at the lower part of the damping adjustable shock absorber (7). The external solenoid valve (71) is located on the side of the damping adjustable shock absorber (7) close to the vehicle frame, and the axial direction of the external solenoid valve (71) is parallel to the axial direction of the damping adjustable shock absorber (7).

3. A truck front suspension electrically controlled suspension according to claim 2, characterized in that: The acceleration sensor includes a sprung acceleration sensor (2) and an unsprung acceleration sensor (3). The sprung acceleration sensor (2) is located at the upper part of the damping adjustable shock absorber (7) and on the side of the damping adjustable shock absorber (7) close to the vehicle frame. The unsprung acceleration sensor (3) is located on the side of the external solenoid valve (71) on the damping adjustable shock absorber (7), and the included angle between the unsprung acceleration sensor (3) and the external solenoid valve (71) is 90°.

4. A truck front suspension electrically controlled suspension according to claim 1, characterized in that: The upper eyelet of the damping adjustable shock absorber (7) is hinged to the vehicle frame through a second upper bracket (10). The second upper bracket (10) is in a "U" shape. One end of the convex part of the second bracket is hinged to the upper eyelet of the shock absorber, and both end plates on the concave side of the second bracket are fixedly connected to the vehicle frame through bolts.

5. A truck front suspension electrically controlled suspension according to claim 1, characterized in that: The lower eyelet of the damping adjustable shock absorber (7) is hinged to the leaf spring (1) through a second lower bracket (11). The second lower bracket (11) is in a long plate shape. The length direction of the second lower bracket (11) is the same as the length direction of the leaf spring (1). One end of the second bracket is fixed to the leaf spring (1), and a shackle is fixed at the other end of the second bracket. The axial direction of the shackle is parallel to the width direction of the leaf spring (1). A bushing is coaxially and rotatably connected inside the shackle, and the lower eyelet of the damping adjustable shock absorber (7) is coaxially and fixedly connected to the bushing.

6. A truck front suspension electrically controlled suspension according to claim 1, characterized in that: The first upper bracket (8) includes a bottom plate (81). Connection guard plates (82) are fixed to the periphery of the bottom plate (81). The top and bottom of the connection guard plates (^{82}) respectively extend above and below the bottom plate (81). The bottom plate (81) is connected to the top of the air spring (6), and the connection guard plates (82) are connected to the vehicle frame.

7. A truck front suspension electrically controlled suspension according to claim 1, characterized in that: The first lower bracket (9) includes a top plate (95) and two Z-shaped plates. The Z-shaped plate includes two horizontal plates and a vertical plate (92). One horizontal plate of the Z-shaped plate is fixedly connected to the bottom of the top plate (95), and the other horizontal plate of the Z-shaped plate is connected to the top plate (95) through an L-shaped plate (94). The two Z-shaped plates are symmetrically and spaced apart.

8. A truck front suspension electrically controlled suspension according to claim 1, characterized in that: The height sensor assembly comprises a vehicle body height sensor (4) and a connecting rod (5), the vehicle body height sensor (4) is connected with the vehicle body through a support, a rotating arm of the vehicle body height sensor (4) is hinged with one end of the connecting rod (5), the other end of the connecting rod (5) is connected with an axle, the length direction of the connecting rod (5) is arranged along a vertical direction, and the rotating direction of the rotating arm of the vehicle body height sensor (4) is in a vertical plane.

9. A truck front suspension electrically controlled suspension according to claim 1, characterized in that: A controller (12) is further included, and the controller (12) is electrically connected with the acceleration sensor, the height sensor assembly, the air spring (6) and the damping-adjustable shock absorber (7) respectively.

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