CN113232621A - Rear protection device of engineering vehicle - Google Patents
Rear protection device of engineering vehicle Download PDFInfo
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- CN113232621A CN113232621A CN202110499494.2A CN202110499494A CN113232621A CN 113232621 A CN113232621 A CN 113232621A CN 202110499494 A CN202110499494 A CN 202110499494A CN 113232621 A CN113232621 A CN 113232621A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/56—Fittings damping bouncing force in truck collisions, e.g. bumpers; Arrangements on high-riding vehicles, e.g. lorries, for preventing vehicles or objects from running thereunder
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Abstract
The invention relates to the technical field of engineering vehicle protection devices, and discloses a rear protection device of an engineering vehicle, which comprises: the vehicle comprises a vehicle body, a first driving mechanism, a protective guard body, a distance sensor, a microprocessor and a power supply, wherein the first driving mechanism is arranged at the tail part of the vehicle body, the protective guard body is arranged at the tail part of the vehicle body and is connected with the driving mechanism so that the protective guard body moves along the height direction of the tail part of the vehicle body, a second driving mechanism is arranged on the protective guard body, the distance sensor is arranged on the protective guard body and is connected with the second driving mechanism so that the distance sensor moves along the length direction of the tail part of the vehicle body, the distance sensor is used for detecting the distance between a rear vehicle and the tail part of the vehicle body, and the microprocessor is in signal connection with the. The invention can make the protective guard body move down to a position close to the ground when the rear vehicle is close to the tail part of the engineering vehicle, thereby avoiding the deformation of the lower part of the protective guard caused by strong impact force when a trolley knocks into the tail.
Description
Technical Field
The invention relates to the technical field of engineering vehicle protection devices, in particular to a rear protection device of an engineering vehicle.
Background
Aiming at the current situations of continuous improvement of a road network and rapid increase of the quantity of held trolleys, in order to reduce and lighten vicious accidents caused by rear-end collision of the trolleys with engineering vehicles, a rear protection device needs to be added to the engineering vehicles.
At present, most rear protective devices of engineering vehicles are guard railings, and the guard railings are arranged at the positions which are not more than 450mm away from the ground for protection so as to prevent the personnel casualties caused by the fact that small vehicles or pedestrians penetrate into the lower portion of the engineering vehicles.
Although the existing protective guard can play a certain role in stopping when a trolley knocks back an engineering vehicle, the lower part of the protective guard deforms and bends towards the inside of the vehicle due to strong impact force when the rear part of the protective guard extends out of the vehicle body and is still a certain distance away from the ground, so that the protection is invalid, and the trolley cannot be prevented from entering the lower part of the engineering vehicle.
Disclosure of Invention
The invention provides a rear protection device of an engineering vehicle, which can enable a protective guard body to move downwards to a position close to the ground when a rear vehicle is close to the tail of the engineering vehicle, so that the lower part of the protective guard is deformed and bent towards the inside of the vehicle due to strong impact force when a trolley knocks the rear.
The invention provides a rear protection device of an engineering vehicle, which comprises:
a vehicle body;
the first driving mechanism is arranged at the tail part of the vehicle body;
the protective guard body is arranged at the tail part of the vehicle body and is connected with the driving mechanism so as to enable the protective guard body to move along the height direction of the tail part of the vehicle body, and the protective guard body is provided with a second driving mechanism;
the distance sensor is arranged on the protective guard body and connected with the second driving mechanism so as to move along the length direction of the tail part of the vehicle body, and the distance sensor is used for detecting the distance between a rear vehicle and the tail part of the vehicle body;
the microprocessor is in signal connection with the first driving mechanism and the second driving mechanism respectively;
the power supply is electrically connected with the first driving mechanism and the second driving mechanism respectively;
when the distance sensor detects that the distance between the rear vehicle and the tail of the vehicle body is smaller than the preset safety distance, the microprocessor controls the first driving mechanism to drive the protective guard body to move downwards for a fixed distance, and controls the second driving mechanism to stop moving.
Optionally, the method further includes:
and the side supporting mechanism is arranged between the vehicle body and the protective guard body, is in signal connection with the microprocessor, is electrically connected with the power supply, and controls the side supporting mechanism to be obliquely supported between the vehicle body and the protective guard body when the second driving mechanism drives the protective guard body to move downwards for a fixed distance.
Optionally, the side support mechanism comprises:
electric telescopic handle places in the holding tank that the terminal surface was seted up under the automobile body, and electric telescopic handle's stiff end is articulated through the tank bottom of first articulated seat with the holding tank, and the flexible end of side brace is articulated through the lower extreme of the articulated seat of second and rail guard body, and electric telescopic handle and microprocessor signal connection, electric telescopic handle and power electric connection.
Optionally, the side of the fixed end of the electric telescopic rod is provided with an arc-shaped surface.
Optionally, the first drive mechanism comprises:
the longitudinal guide rail is fixedly connected to the tail of the vehicle body along the height direction of the vehicle body;
the sliding block is in sliding fit with the longitudinal guide rail, a walking wheel rolling along the longitudinal guide rail is connected onto the sliding block, the walking wheel is driven by a first motor, and the first motor is in signal connection with the microprocessor and is electrically connected with the power supply.
Optionally, the second driving mechanism includes a screw nut assembly and a second motor, the second motor is connected to the screw nut assembly, and the distance sensor is connected to the screw nut assembly, so that the screw nut assembly drives the distance sensor to move along the length direction of the tail portion of the vehicle body.
Optionally, a placing groove formed in one side end, far away from the vehicle body, of the guard rail body is provided along the length direction of the vehicle body, and the screw nut assembly and the distance sensor are arranged in the placing groove.
Optionally, the guard rail body is provided with a buffering energy-absorbing mechanism, and the buffering energy-absorbing mechanism can buffer and absorb the impact force from the rear.
Optionally, the energy-absorbing buffer mechanism includes:
the rubber block is fixed in an accommodating cavity formed in the protective guard body, a plurality of fixing cavities are distributed in the rubber block, and rigid blocks are fixed in the fixing cavities.
Optionally, an alarm is further disposed on the vehicle body, the alarm is in signal connection with the microprocessor, the microprocessor is further configured to record that the distance between the rear vehicle and the vehicle tail is a first distance value when the distance sensor detects that the distance between the rear vehicle and the vehicle tail is smaller than a preset safety distance, and record that the distance between the rear vehicle and the vehicle tail is a second distance value after unit time, a difference between the first distance value and the second distance value is obtained, and the difference is compared with a preset safety threshold, if the difference is larger than the safety threshold, the alarm is controlled to send a warning to remind a driver, and the first driving mechanism is controlled to drive the guard rail body to move downward for a fixed distance.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the distance sensor is driven by the second driving mechanism to move along the length direction of the tail part of the vehicle body, so that other vehicles in a plurality of directions in the first row behind the engineering vehicle can be detected, if the distance between a vehicle and the tail part of the engineering vehicle is less than the preset safety distance, the microprocessor drives the protective guard body to move downwards for a fixed distance by controlling the first driving mechanism, at the moment, the gap between the bottom of the protective guard body and the ground is smaller, a rear trolley can be prevented from entering the bottom of the engineering vehicle, the dynamic adjustment process of the protective guard body can be realized without manual adjustment of a driver driving the engineering vehicle, and the safety degree is higher.
Drawings
Fig. 1 is a schematic structural diagram of a rear protection device of an engineering vehicle according to an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of the structure at G in FIG. 1;
fig. 3 is a schematic structural diagram of a second driving mechanism according to an embodiment of the present invention.
Description of reference numerals:
1-vehicle body, 100-accommodating groove, 2-first driving mechanism, 200-longitudinal guide rail, 201-sliding block, 3-protective guard body, 300-placing groove, 301-accommodating cavity, 31-buffering energy absorption mechanism, 310-rubber block, 311-fixing cavity, 312-rigid block, 4-second driving mechanism, 40-lead screw nut component, 5-distance sensor, 6-side supporting mechanism, 600-electric telescopic rod, 601-first hinging seat, 602-second hinging seat and 603-arc surface.
Detailed Description
An embodiment of the present invention will be described in detail below with reference to the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the embodiment.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing technical solutions of the present invention and simplifying the description, but 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 thus, should not be construed as limiting the present invention.
As shown in fig. 1, an embodiment of the present invention provides a rear protection device for a working vehicle, including: the vehicle comprises a vehicle body 1, a first driving mechanism 2, a guard rail body 3, a distance sensor 5, a microprocessor and a power supply, wherein the first driving mechanism 2 is arranged at the tail part of the vehicle body 1, the guard rail body 3 is arranged at the tail part of the vehicle body 1 and is connected with the driving mechanism 2 so that the guard rail body 3 moves along the height direction of the tail part of the vehicle body 1, a second driving mechanism 4 is arranged on the guard rail body 3, the distance sensor 5 is arranged on the guard rail body 3 and is connected with the second driving mechanism 4 so that the distance sensor 5 moves along the length direction of the tail part of the vehicle body 1, the distance sensor 5 is used for detecting the distance between a rear vehicle and the tail part of the vehicle body 1, the microprocessor is respectively in signal connection with the first driving mechanism 2 and the second driving mechanism 4, the power supply is respectively in electrical connection with the first driving mechanism 2 and the second driving mechanism 4, when the distance sensor 5 detects that the, the microprocessor controls the first driving mechanism 2 to drive the protective guard body 3 to move downwards for a fixed distance, and controls the second driving mechanism 4 to stop moving.
The invention can detect other vehicles in a plurality of directions of a first row behind the engineering vehicle by driving the distance sensor to move along the length direction of the tail part of the vehicle body through the second driving mechanism, if the distance between a vehicle and the tail part of the engineering vehicle is less than the preset safety distance, the microprocessor drives the protective guard body to move downwards for a fixed distance by controlling the first driving mechanism, at the moment, the gap between the bottom of the protective guard body and the ground is smaller, so that a rear trolley can be prevented from entering the bottom of the engineering vehicle, when the distance sensor detects that the distance between the rear vehicle and the tail part of the vehicle body is greater than the preset safety distance, the microprocessor controls the first driving mechanism to drive the protective guard body to move upwards for a fixed distance (at the moment, the initial position is recovered), and simultaneously controls the second driving mechanism to drive the distance sensor to continuously move back and forth along the length direction of the tail part of the vehicle body, and the dynamic adjustment process of the protective guard body can be realized without manual adjustment of a driver driving an engineering vehicle, and the safety degree is higher.
In order to avoid the deformation of the protective guard body caused by overlarge impact force on the protective guard body when the speed of a rear car is too high, the rear protective device of the engineering vehicle provided by the embodiment of the invention further comprises: side supporting mechanism 6, side supporting mechanism 6 sets up between automobile body 1 and rail guard body 3, side supporting mechanism 6 and microprocessor signal connection, side supporting mechanism 6 and power electric connection, when second actuating mechanism 4 drives rail guard body 3 and moves fixed distance downwards, microprocessor control side supporting mechanism 6 slope support is between automobile body 1 and rail guard body 3, thereby form stable triangle-shaped between messenger's automobile body 1 and rail guard body 3 and the side supporting mechanism 6 and support, thereby strengthened the support to rail guard body 3, lead to the rail guard lower part to take place to warp to the car internal bending when further avoiding rear car to chase into the rear engineering vehicle, lead to the problem of protection inefficacy.
In this embodiment, referring to fig. 2, the side supporting mechanism 6 includes an electric telescopic rod 600, the electric telescopic rod 600 is placed in the accommodating groove 100 formed in the lower end surface of the vehicle body 1, the fixed end of the electric telescopic rod 600 is hinged to the bottom of the accommodating groove 100 through a first hinged seat 601, the telescopic end of the side supporting mechanism 600 is hinged to the lower end of the guard rail body 3 through a second hinged seat 602, the electric telescopic rod 600 is in signal connection with a microprocessor, and the electric telescopic rod 600 is electrically connected to a power supply.
In the present embodiment, the side support mechanisms 6 are provided in two sets, symmetrically provided on the vehicle body 1.
Optionally, the side of the fixed end of electric telescopic handle 600 has arc 603, so that when electric telescopic handle 600 extends, arc 603 abuts against the groove wall of accommodating groove 100, on one hand, arc 603 does not cause multiple extrusion to the groove wall of accommodating groove 100, and on the other hand, the groove wall of accommodating groove 100 can support and block electric telescopic handle 600, thereby strengthening the support for guard rail body 3 and further ensuring the stable support for guard rail body 3.
In the present embodiment, the first drive mechanism 2 includes: the automatic lifting device comprises a longitudinal guide rail 200 and a sliding block 201, wherein the longitudinal guide rail 200 is fixedly connected to the tail of the vehicle body 1 along the height direction of the vehicle body 1, the sliding block 201 is in sliding fit with the longitudinal guide rail 200, a walking wheel rolling along the longitudinal guide rail 200 is connected onto the sliding block 201, the walking wheel is driven by a first motor, and the first motor is in signal connection with a microprocessor and is electrically connected with a power supply.
Referring to fig. 3, the second driving mechanism 4 includes a screw nut assembly 40 and a second motor, the second motor is connected to the screw nut assembly 40, the distance sensor 5 is connected to the screw nut assembly 40, so that the screw nut assembly 40 drives the distance sensor 5 to move along the length direction of the tail portion of the vehicle body 1, and the second motor is in signal connection with the microprocessor and is electrically connected to the power supply.
Specifically, one side end of the protective guard body 3, which is far away from the vehicle body 1, is provided with a placing groove 300 which is formed along the length direction of the protective guard body, and the screw nut assembly 40 and the distance sensor 5 are arranged in the placing groove 300, so that the screw nut assembly 40 and the distance sensor 5 can be prevented from being exposed outside the protective guard body 3, damage to a rear vehicle caused by rear-end collision can be avoided, and normal use of the protective guard can be guaranteed.
In order to further avoid excessive deformation of the guard rail body when a rear vehicle collides with the engineering vehicle, in the present embodiment, the guard rail body 3 is provided with the buffering and energy-absorbing mechanism 31, and the buffering and energy-absorbing mechanism 31 can buffer and absorb the impact force from the rear.
Specifically, the buffering energy-absorbing mechanism 31 includes a rubber block 310, the rubber block 310 is fixed in an accommodating cavity 301 formed in the guard rail body 3, a plurality of fixed cavities 311 are distributed in the rubber block 310, rigid blocks 312 are fixed in the fixed cavities 311, the rubber block 310 firstly absorbs impact force from a rear vehicle and then transmits the impact force to the guard rail body 3, so that impact force applied to the guard rail body 3 can be reduced, the overall strength of the rubber block 310 can be ensured through the rigid blocks 311 arranged in the rubber block 310, and the rubber block 310 is ensured not to be excessively deformed, so that the guard rail body 3 is further ensured not to be excessively deformed, and the protection effect of the guard rail body 3 is ensured.
Optionally, the vehicle body 1 is further provided with an alarm, the alarm is in signal connection with the microprocessor, the microprocessor is further configured to record a distance between the rear vehicle and the rear portion of the vehicle body 1 as a first distance value when the distance sensor 5 detects that the distance between the rear vehicle and the rear portion of the vehicle body 1 is smaller than a preset safety distance, record a distance between the rear vehicle and the rear portion of the vehicle body 1 as a second distance value after unit time, obtain a difference between the first distance value and the second distance value, compare the difference with a preset safety threshold, control the alarm to send an alarm to remind a driver if the difference is larger than the safety threshold, and simultaneously control the second driving mechanism 4 to drive the guard rail body 3 to move downward by a fixed distance, so that a difference between a vehicle speed of the rear vehicle and a vehicle speed of the engineering vehicle can be known through the difference, if the vehicle speed difference is too large, and the distance between the vehicle speed and the engineering vehicle speed is smaller than the safety distance, it means that the rear vehicle may hit the rear part of the vehicle body 1, in this embodiment, the safety distance is preferably 50cm to 100cm, the safety threshold is theoretically greater than 0, the unit time may be 1S or less, and the warning device may emit a warning sound and light a warning light, so as to warn both the driver of the construction vehicle and the driver of the rear vehicle who may hit the rear.
The use method and the working principle are as follows: in the operation process of the engineering vehicle, the microprocessor controls the first motor to rotate forwards and reversely according to fixed interval time in a staggered manner, so that the slide block 201 on the travelling wheel is driven to travel back and forth along the longitudinal guide rail 200, namely the distance sensor 5 is driven to move back and forth along the length direction of the protective guard body 3, the distance sensor 5 can detect the distance between a first row of vehicles at each position right behind the engineering vehicle and the tail part of the vehicle body 1 in real time, when the distance sensor 5 detects that the distance between the rear vehicle and the tail part of the vehicle body 1 is smaller than a preset safety distance, the distance at the moment is recorded as a first distance value, the distance between the rear vehicle and the tail part of the vehicle body 1 detected by the distance sensor 5 is recorded as a second distance value after unit time, the difference value between the first distance value and the second distance value is obtained, and the difference value is compared with a preset safety threshold value, if the difference is greater than the safety threshold (which indicates that a rear vehicle may collide with the tail of the vehicle body 1), the alarm is controlled by the alarm to warn a driver, and the second motor is controlled to rotate at the same time, so that the nut on the screw nut assembly 40 moves downwards to drive the guard rail body 3 to move downwards for a fixed distance, and in the process, the microprocessor controls the electric telescopic rod 600 to extend for a fixed distance, so that the electric telescopic rod 600 forms a stable support for the guard rail body 3.
The above disclosure is only for a few specific embodiments of the present invention, however, the present invention is not limited to the above embodiments, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.
Claims (10)
1. The utility model provides a rear protection device of engineering vehicle, automobile body (1), its characterized in that still includes:
the first driving mechanism (2) is arranged at the tail part of the vehicle body (1);
the protective guard body (3) is arranged at the tail part of the vehicle body (1) and is connected with the first driving mechanism (2) so that the protective guard body (3) can move along the height direction of the tail part of the vehicle body (1), and a second driving mechanism (4) is arranged on the protective guard body (3);
the distance sensor (5) is arranged on the protective guard body (3) and connected with the second driving mechanism (4) so that the distance sensor (5) can move along the length direction of the tail part of the vehicle body (1), and the distance sensor (5) is used for detecting the distance between a rear vehicle and the tail part of the vehicle body (1);
the microprocessor is respectively in signal connection with the first driving mechanism (2) and the second driving mechanism (4);
the power supply is electrically connected with the first driving mechanism (2) and the second driving mechanism (4) respectively;
when the distance sensor (5) detects that the distance between a rear vehicle and the tail of the vehicle body (1) is smaller than a preset safety distance, the microprocessor controls the first driving mechanism (2) to drive the protective guard body (3) to move downwards for a fixed distance, and controls the second driving mechanism (4) to stop moving.
2. The rear guard of a working vehicle as set forth in claim 1, further comprising:
side supporting mechanism (6), set up in between automobile body (1) and rail guard body (3), side supporting mechanism (6) with microprocessor signal connection, side supporting mechanism (6) with power electric connection, work as second actuating mechanism (4) drive rail guard body (3) fixed distance's while moving down, microprocessor control side supporting mechanism (6) slope support in between automobile body (1) and rail guard body (3).
3. The rear guard of a working vehicle according to claim 2, characterized in that the side support mechanism (6) comprises:
electric telescopic handle (600), place in holding tank (100) that the terminal surface was seted up under automobile body (1) in, the stiff end of electric telescopic handle (600) through first articulated seat (601) with the tank bottom of holding tank (100) is articulated, the flexible end of side stay (600) through articulated seat of second (602) with the lower extreme of rail guard body (3) is articulated, electric telescopic handle (600) with microprocessor signal connection, electric telescopic handle (600) with power electric connection.
4. The rear guard of an engineering vehicle as claimed in claim 3, characterized in that the side of the fixed end of the power telescopic rod (600) has an arc-shaped face (603).
5. The rear guard of a working vehicle according to claim 1 or 2, characterized in that the first drive mechanism (2) comprises:
the longitudinal guide rail (200) is fixedly connected to the tail of the vehicle body (1) along the height direction of the vehicle body (1);
slider (201), with longitudinal rail (200) sliding fit, be connected with on slider (201) and follow the rolling walking wheel of longitudinal rail (200), the walking wheel is through first motor drive, first motor and microprocessor signal connection, with power electric connection.
6. The rear protection device of the engineering vehicle as claimed in claim 1 or 2, wherein the second driving mechanism (4) comprises a screw nut assembly (40) and a second motor, the second motor is connected with the screw nut assembly (40), the distance sensor (5) is connected with the screw nut assembly (40) so that the screw nut assembly (40) drives the distance sensor (5) to move along the length direction of the tail portion of the vehicle body (1), and the second motor is in signal connection with the microprocessor and is electrically connected with the power supply.
7. The rear protection device for engineering vehicles according to claim 6, wherein the guard rail body (3) has a placement groove (300) opened along the length direction thereof at one side end away from the vehicle body (1), and the screw nut assembly (40) and the distance sensor (5) are both disposed in the placement groove (300).
8. The rear protective device of the engineering vehicle as claimed in claim 1, 2 or 7, wherein the protective guard body (3) is provided with a buffer energy absorption mechanism (31), and the buffer energy absorption mechanism (31) can buffer and absorb the impact force from the rear.
9. The rear guard of a working vehicle as claimed in claim 8, characterized in that the energy-absorbing buffer mechanism (31) comprises:
the rubber block (310) is fixed in an accommodating cavity (301) formed in the guard rail body (3), a plurality of fixing cavities (311) are distributed in the rubber block (310), and rigid blocks (312) are fixed in the fixing cavities (311).
10. The rear protection device for engineering vehicles according to claim 1, characterized in that the vehicle body (1) is further provided with a warning device, the alarm is in signal connection with the microprocessor, the microprocessor is further used for recording the distance at the moment as a first distance value when the distance sensor (5) detects that the distance between the rear vehicle and the tail part of the vehicle body (1) is less than a preset safety distance, and recording that the distance between the rear vehicle and the tail part of the vehicle body (1) detected by the distance sensor (5) is a second distance value after unit time to obtain the difference value between the first distance value and the second distance value, and comparing the difference with a preset safety threshold, if the difference is greater than the safety threshold, controlling the alarm to send out a warning to remind the driver, and the first driving mechanism (2) is controlled to drive the protective guard body (3) to move downwards for a fixed distance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110499494.2A CN113232621B (en) | 2021-05-06 | 2021-05-06 | Rear protection device of engineering vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110499494.2A CN113232621B (en) | 2021-05-06 | 2021-05-06 | Rear protection device of engineering vehicle |
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| CN113232621A true CN113232621A (en) | 2021-08-10 |
| CN113232621B CN113232621B (en) | 2023-07-18 |
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| CN202110499494.2A Active CN113232621B (en) | 2021-05-06 | 2021-05-06 | Rear protection device of engineering vehicle |
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| Publication number | Publication date |
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| CN113232621B (en) | 2023-07-18 |
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