CN209079848U - A kind of adjustable rear of commercial vehicle - Google Patents

Abstract

The utility model discloses an adjustable rear protective device for a commercial vehicle, which comprises a first protective plate, a second protective plate, a cylinder and a solenoid valve, wherein the first protective plate is fixed on a vehicle frame, and the second protective plate is hinged on two The rear end of each support arm, the front ends of the two support arms are hinged on the two sides of the frame respectively, the top end of the cylinder is hinged on the beam of the frame, the bottom end of the cylinder is hinged on the support rod, and the two ends of the support rod are fixed on On the support arm hinged with the second protective plate, the cylinder can drive the second protective plate to move up and down, the solenoid valve is assembled at the position corresponding to the cylinder on the rear side of the beam of the frame, and the solenoid valve is connected with the cylinder and the electronic control unit of the vehicle. The solenoid valve receives the instruction of the vehicle electronic control unit to control the work of the cylinder, and the cylinder is connected with the air source of the original vehicle and supplied with air by the air source. At the same time, it can achieve better protection effect.

Description

An adjustable rear guard for commercial vehicles

technical field

The utility model relates to a protective device, in particular to an adjustable rear protective device for commercial vehicles.

Background technique

At present, in order to ensure the passability of commercial vehicles on rough roads and the higher chassis height of commercial vehicles, the rear protective devices of commercial vehicles are often high. In the event of a rear-end collision, since the rear vehicle is usually a family car, the rear bumper of the commercial vehicle cannot be collided with the front bumper of the family car. In this case, it will lead to a serious roof cutting accident, greatly increasing the severity of the accident, and reducing the survival probability of the driver behind.

SUMMARY OF THE INVENTION

The purpose of the utility model is to provide an adjustable rear protective device for commercial vehicles in order to solve the problem that the existing commercial vehicle rear protective device has a relatively high assembly position, which greatly increases the severity of the accident when rear-end collision occurs.

The adjustable rear protective device for commercial vehicles provided by the utility model comprises a first protective plate, a second protective plate, a cylinder and a solenoid valve, wherein the first protective plate is fixed on the vehicle frame, and the second protective plate is hinged on two support arms The front end of the two support arms are hinged on both sides of the frame respectively, the top end of the cylinder is hinged on the beam of the frame, the bottom end of the cylinder is hinged on the strut, the two ends of the strut are fixed with the second On the hinged support arm of the protective plate, the cylinder can drive the second protective plate to move up and down. The solenoid valve is assembled at the position corresponding to the cylinder on the rear side of the beam of the frame. The solenoid valve is connected with the cylinder and the vehicle electronic control unit. The solenoid valve receives The instructions of the vehicle electronic control unit control the operation of the cylinder, which is connected to the air source of the original vehicle and supplied with air by the air source.

Each support arm is composed of an upper support arm and a lower support arm, the upper support arm and the lower support arm are arranged up and down, the length of the lower support arm is greater than the length of the upper support arm, and the front end of the upper support arm is hinged to one of the frame. The rear end of the upper support arm is hinged on one side of the second protective plate, the front end of the lower support arm is clamped in the chute on the side of the frame and can slide in the chute, and the rear end of the lower support arm is hinged on the side of the frame. On one side of the second protective plate, both ends of the support rod hinged with the bottom end of the cylinder are fixed on the lower support arm.

The cylinder is a double-acting cylinder produced by AirTAC, and the model of the cylinder is SC50×150SCB.

The solenoid valve is a three-position, five-way solenoid valve produced by AirTAC, the model is 4V230C-08 DC24V.

Two radar sensors are installed on both sides of the rear end of the first protective plate. The radar sensor is a DELPHI ESR millimeter-wave radar. The radar sensor can transmit the road condition information behind the vehicle to the vehicle electronic control unit in real time.

The electronic control unit of the vehicle and the air source that comes with the original vehicle are both assembled from the existing equipment carried by the original vehicle, so the specific models and specifications are not described in detail.

The working principle of the present utility model:

In order to ensure the passage of the commercial vehicle in the adjustable rear protective device of the commercial vehicle provided by the utility model in the normal driving condition of the vehicle, the height of the second protective plate and the first protective plate are the same, and the front end of the lower support arm is close to the front end of the side chute of the frame. At the position of the point, when the radar sensor detects that the relative distance between the rear vehicle and the vehicle is less than and the relative vehicle speed is greater than the limit threshold, it is considered to be in a dangerous condition, and the vehicle electronic control unit sends a command to the three-position, five-way solenoid valve. The three-position five-way solenoid valve supplies air to the double-acting cylinder to extend it, and the cylinder drives the lower support arm until the front end of the lower support arm slides to the rear end position of the side chute of the frame. At this time, the three-position five-way solenoid valve Change to locked state. If a collision accident occurs at this time, the first protective plate is directly connected to the frame, and the collision force is transmitted to the frame after attenuation; the second protective plate transmits the collision force to the frame through the upper and lower support arms on the left and right sides. The chute on the frame and the side of the frame minimizes the damage to the cylinder in an accident.

When the vehicle is parked and parked, in order to reduce the harm of rear-end collision at this time, the system will indiscriminately lower the second fender to the lowest position to form a larger protection range together with the first fender.

When the vehicle radar sensor detects that the relative distance between the rear vehicle and the vehicle is greater than and the relative vehicle speed is less than the limit threshold, it is considered to be out of the dangerous condition, and the vehicle electronic control unit sends a command to the three-position, five-way solenoid valve. The 5/3-way solenoid valve supplies air to the double-acting cylinder to shorten it until the lower support arm reaches the front end of the chute, and the 5/3-way solenoid valve changes to the locked state. At this time, the hinge point of the lower support arm is located at the front end of the chute.

The beneficial effects of the present utility model:

The adjustable rear protective device of the commercial vehicle provided by the utility model adopts the secondary protective plate, which can realize the height adjustment of the rear protective device, and can realize the protective effect on the rear vehicle when the rear-end collision accident occurs while satisfying the passability of the commercial vehicle. , and whether the rear car is a family car with a lower front bumper or other vehicles with a higher front bumper, it can achieve a better protection effect. The air source that comes with the commercial vehicle is used as the driving air source, and the number of cylinders is reduced by the single-cylinder in the middle, which simplifies the driving device and saves costs. The bottom dead center position of the chute on the side of the frame is also the dead center position of the mechanical structure, which reduces the force of the cylinder when a collision accident occurs, improves the bearing capacity of the rear protection device, and strengthens the rigidity of the rear protection device.

Description of drawings

FIG. 1 is a schematic diagram of the overall structure of the protective device according to the present invention.

FIG. 2 is a schematic diagram of the structure of the strut according to the present invention.

The annotations in the figure above are as follows:

1. The first protective plate 2, the second protective plate 3, the cylinder 4, the solenoid valve 5, the frame 6, the beam 7, the strut 8, the upper support arm 9, the lower support arm 10, the chute 11, and the radar sensor.

Detailed ways

See Figure 1 and Figure 2:

The adjustable rear protective device for commercial vehicles provided by the utility model includes a first protective plate 1, a second protective plate 2, a cylinder 3 and a solenoid valve 4, wherein the first protective plate 1 is fixed on the vehicle frame 5, and the second protective plate 2 is hinged on the rear end of the two support arms, the front ends of the two support arms are hinged on both sides of the frame 5, the top end of the cylinder 3 is hinged on the beam 6 of the frame 5, and the bottom end of the cylinder 3 is hinged on the strut. 7, both ends of the support rod 7 are fixed on the support arm hinged with the second protective plate 2, the cylinder 3 can drive the second protective plate 2 to move up and down, the solenoid valve 4 is assembled on the rear side of the beam 6 of the frame 5 corresponding to At the position of the cylinder 3, the solenoid valve 4 is connected with the cylinder 3 and the vehicle electronic control unit. The solenoid valve 4 receives the instruction of the vehicle electronic control unit to control the work of the cylinder 3. Air supply.

Each support arm is composed of an upper support arm 8 and a lower support arm 9. The upper support arm 8 and the lower support arm 9 are arranged up and down, and the length of the lower support arm 9 is greater than that of the upper support arm 8, wherein the length of the upper support arm 8 The front end is hinged on one side of the frame 5, the rear end of the upper support arm 8 is hinged on one side of the second fender 2, and the front end of the lower support arm 9 is clamped in the chute 10 on the side of the frame 5 and can slide on the side of the frame 5. The rear end of the lower support arm 9 is hinged on one side of the second protective plate 2 , and the two ends of the support rod 7 hinged with the bottom end of the cylinder 3 are fixed on the lower support arm 9 .

Cylinder 3 is a double-acting cylinder produced by AirTAC, and the model of cylinder 3 is SC50×150SCB.

Solenoid valve 4 is a three-position, five-way solenoid valve produced by AirTAC, the model is 4V230C-08DC24V.

Two radar sensors 11 are installed on both sides of the rear end of the first protective plate 1. The model of the radar sensor 11 is DELPHI. The radar sensor 11 is an ESR millimeter-wave radar. The radar sensor 11 can transmit the road condition information behind the vehicle to the vehicle electronics in real time. inside the control unit.

The electronic control unit of the vehicle and the air source that comes with the original vehicle are both assembled from the existing equipment carried by the original vehicle, so the specific models and specifications are not described in detail.

The working principle of the present utility model:

In order to ensure the passability of the commercial vehicle in the adjustable rear protective device for commercial vehicles provided by the present utility model, the second protective plate 2 and the first protective plate 1 have the same height, and the front end of the lower support arm 9 is close to the vehicle frame 5 in order to ensure the passability of the commercial vehicle. At the position of the front end of the side chute 10, when the radar sensor 11 detects that the relative distance between the rear vehicle and the vehicle and the relative vehicle speed are less than the limit threshold, it is considered to be in a dangerous condition, and the vehicle electronic control unit sends the three-position, five-way solenoid valve. 4 Issue an order. The three-position, five-way solenoid valve 4 supplies air to the double-acting cylinder 3 to extend it, and the cylinder 3 drives the lower support arm 9 until the front end of the lower support arm 9 slides to the rear end position of the side chute 10 of the frame 5. At this time , the three-position five-way solenoid valve 4 is changed to the lock state. If a collision accident occurs at this time, the first fender 1 is directly and fixedly connected to the frame 5, and the collision force is attenuated and transmitted to the frame 5; the second fender 2 passes through the upper support arm 8 and the lower support arm on the left and right sides. 9. The collision force is transmitted to the frame 5 and the chute 10 on the side of the frame 5, so as to reduce the damage of the cylinder 3 in the accident as much as possible.

When the vehicle is parked and parked, in order to reduce the hazard of rear-end collision at this time, the system will indiscriminately lower the second protective plate 2 to the lowest position, forming a larger protective range together with the first protective plate 1 .

When the vehicle radar sensor 11 detects that the relative distance and relative speed between the rear vehicle and the vehicle are greater than the limit threshold, it is considered to be out of the dangerous condition, and the vehicle electronic control unit sends a command to the three-position, five-way solenoid valve 4 . The 5/3-way solenoid valve 4 supplies air to the double-acting cylinder 3 to shorten it until the lower support arm 9 reaches the front end of the chute 10, and the 5/3-way solenoid valve 4 changes to the locked state. At this time, the hinge point of the lower support arm 9 is located at the foremost end of the chute 10 .

Claims (5)

1. rear is adjusted in a kind of commercial vehicle, it is characterised in that: include the first protective plate, the second protective plate, cylinder And solenoid valve, wherein the first protective plate is fixed on vehicle frame, the second protective plate is hinged on the rear end of two support arms, two supports The front end of arm is respectively hinged at the two sides of vehicle frame, and the top of cylinder is hinged on the crossbeam of vehicle frame, and the bottom end of cylinder is hinged on branch On bar, the both ends of strut are fixed on the support arm hinged with the second protective plate, and cylinder is able to drive the second protective plate and carries out Lower movement, solenoid valve are assemblied on rear side of the crossbeam of vehicle frame at the position of corresponding cylinder, solenoid valve and cylinder and Car Electronic Control Unit is connected, and solenoid valve receives the work of the instruction control cylinder of Vehicle Electronic Control Unit, the cylinder gas included with former vehicle Source connects and by the gas source feed.

2. rear is adjusted in a kind of commercial vehicle according to claim 1, it is characterised in that: each support Arm is made of upper support arm and lower support arm, and upper support arm and lower support arm are setting up and down, and the length of lower support arm is greater than The length of upper support arm, wherein the front end of upper support arm is hinged on the side of vehicle frame, and it is anti-that the rear end of upper support arm is hinged on second The side of backplate, the front end of lower support arm are connected in the sliding slot of vehicle frame side and can be slided in sliding slot, lower support The rear end of arm is hinged on the side of the second protective plate, and the strut both ends being hinged with cylinder end are fixed in lower support arm.

3. rear is adjusted in a kind of commercial vehicle according to claim 1, it is characterised in that: the cylinder is Asia The double-acting cylinder of De Ke company production, model SC50 × 150SCB type of cylinder.

4. rear is adjusted in a kind of commercial vehicle according to claim 1, it is characterised in that: the solenoid valve is The 3 position-5 way solenoid valve of Ya De visitor company production, model 4V230C-08 DC24V.

5. rear is adjusted in a kind of commercial vehicle according to claim 1, it is characterised in that: first protection The rear end sides assembly of plate is ESR millimeters there are two radar sensor, the model DELPHI of radar sensor, radar sensor Wave radar, radar sensor can will be in the traffic information real-time transmissions to Vehicle Electronic Control Unit of rear of vehicle.