Protective device for preventing wide-body vehicle from falling during reversing

Abstract

The utility model relates to the technical field of engineering trucks, in particular to a wide-body vehicle reversing anti-falling protection device which comprises a fixing support, a proximity switch and a swing assembly, two parallel and vertical installation plates are formed on the fixing support, the proximity switch is assembled on the installation plates, the swing assembly comprises a swing rod and a swing baffle, and the swing rod is connected with the swing baffle. The swing rod is hinged between the mounting plates in a swing mode, a swing baffle is formed at the lower end of the swing rod, the side face of the upper end of the swing rod shields the induction face of the proximity switch, the swing baffle is pushed by an obstacle to enable the swing rod to swing, and the side face of the upper end of the swing rod starts to break away from the induction face of the proximity switch after swinging so as to trigger the proximity switch. The triggered proximity switch feeds back a signal to the ECU of the wide-body vehicle, and the ECU controls a starting accelerator pedal of the wide-body vehicle to be in an idling state. The technical problems that in the prior art, blind areas exist when the wide-body vehicle backs up, environmental adaptability is poor, and subjective judgment of a driver is needed are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to engineering car technical field, concretely relates to a wide body car protection device that prevents falling when reversing. BACKGROUND

[0002] The application scene of the off-highway wide body dump truck is mainly mine area, the vehicle transports the waste produced in the mining process to the dump site, and the dump site of the mine area is usually a deep ditch, and sometimes the vehicle needs to increase the throttle to overcome the resistance caused by uneven ground during the dumping process, the throttle is difficult to control, and the dump wall of the dump site is loose, so there is a risk of falling out of the dump wall and falling into the deep ditch, causing personal injury. Based on the above situation, it is necessary to provide a protection device for preventing falling when reversing for the off-highway wide body dump truck used in the mine area.

[0003] At present, the reversing auxiliary device used by the wide body car mainly includes a reversing alarm and a reversing image system. When the gear position of the vehicle is switched to the reversing gear, the reversing image system is automatically started, and the instrument displays the picture behind the vehicle. At the same time, the reversing radar system is activated, and the relay connects the alarm circuit. The two auxiliary devices have the following shortcomings:

[0004] (1) There is a blind area in the field of vision / detection;

[0005] (2) Poor environmental adaptability;

[0006] (3) The driver needs to make subjective judgments.

[0007] This leads to:

[0008] (1) Obstacles cannot be effectively detected, and there is a blind area in the field of vision / detection;

[0009] (2) Poor environmental adaptability, which is easy to cause false alarms or omissions due to environmental factors;

[0010] (3) The driver needs to make subjective judgments, which is easy to cause judgment errors;

[0011] (4) When the driver uses the auxiliary device, he is easy to ignore the observation of the environment, which divides the driving attention. SUMMARY

[0012] In order to solve the technical problems of blind area, poor environmental adaptability and the need for subjective judgment of the driver when the wide body car reverses in the prior art, the present application provides a protection device for preventing falling when the wide body car reverses, which solves the above technical problems.

[0013] The technical scheme adopted by the utility model to solve its technical problems is:

[0014] The utility model provides a kind of protection device for preventing falling of wide-body vehicle reversing, comprising: fixed support, the fixed support is connected on the frame of wide-body vehicle tail end, two parallel and vertical mounting plates are formed on the fixed support;Proximity switch, the proximity switch is assembled on the mounting plate;Swing assembly, the swing assembly includes swing rod and swing baffle, the swing rod is hingedly connected between the mounting plate, in natural state, the swing rod is vertical state, the lower end of the swing rod forms the swing baffle, the upper end side of the swing rod shields the induction surface of the proximity switch, the swing baffle is pushed by barrier and makes the swing rod swing, the upper end side of the swing rod after swinging starts to separate the induction surface of the proximity switch, to trigger the proximity switch, the proximity switch triggered feedback signal is given to the ECU of wide-body vehicle, and ECU controls the wide-body vehicle's launch throttle pedal in idle speed state.

[0015] Further, the swing baffle is inclinedly arranged at the lower end of the swing rod.

[0016] Further, the swing baffle triggers the proximity switch when the sensing area of the induction surface of the swing baffle is separated from 1 / 3 of the induction area of the induction surface of the proximity switch.

[0017] Further, the proximity switch has two groups, and the main body of the two groups of proximity switches is arranged on the side of the corresponding mounting plate away from the swing assembly.

[0018] Further, after any one group of proximity switches is triggered, feedback signal is given to the ECU of wide-body vehicle, to control the launch throttle pedal of wide-body vehicle in idle speed state.

[0019] Further, in any case, when the level signals collected by the switch quantity collection ports of the two groups of proximity switches are different, the reversing fault prompting system of wide-body vehicle is triggered.

[0020] Further, the fixed support is provided with a protective cover to envelope the proximity switch.

[0021] Based on the above technical solution, the technical effects that the utility model can achieve are as follows:

[0022] The utility model discloses a wide -body car's protection device that prevents falling when reversing, including fixed bolster and the proximity switch and swing assembly of assembly on fixed bolster, when wide -body vehicle stationary state swing assembly swings natural droop, when wide -body car reversing, swing baffle of swing assembly is collided to dump wall, and the upper end side surface of swing rod that originally covers the induction surface of proximity switch is separated from the induction surface of proximity switch, triggers the proximity switch, and the proximity switch feedback signal of triggering gives the ECU of wide -body car, and the ECU controls the wide -body car's launch throttle pedal in idle speed state, the wide -body car moves back to oil door invalid at this moment, but the lifting dump is effective, and swing baffle separates dump wall, and the gear is hung forward, and the throttle restores normal state, and the launch throttle pedal is controlled into idle speed state completely and automatically, thereby solve the technical problem that the blind area exists when wide -body car reversing in prior art, environmental adaptability is poor and needs the subjective judgment of driver. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the whole structure schematic diagram of the protection device that prevents falling when reversing of the utility model's wide -body car;

[0024] Figure 2 It is the schematic diagram of another view of the protection device that prevents falling when reversing of the utility model's wide -body car;

[0025] Figure 3 It is the exploded schematic diagram of the protection device that prevents falling when reversing of the utility model's wide -body car;

[0026] Figure 4 It is the schematic diagram of the action process of the protection device that prevents falling when reversing of the utility model's wide -body car.

[0027] In the utility model: 1-fixed bolster, 11-mounting plate, 12-protective cover, 13-bolt fixing bracket;2-proximity switch, 21-transition wire bundle;3-swing assembly, 31-swing rod, 32-swing baffle, 33-bolt with hole, 34-lock nut, 35-sleeve plate, 36-washer, 37-pin;4-stand;5-throttle pedal;6-engine;7-instrument. DETAILED DESCRIPTION

[0028] The technical scheme in the utility model embodiments will be described clearly and completely below in conjunction with the drawings in the utility model embodiments. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0029] AsFigures 1-3 The utility model provides a kind of protection device for preventing falling of wide-body vehicle reversing, including fixed support 1, proximity switch 2 and swing assembly 3, fixed support 1 is connected on the frame of wide-body vehicle tail end, two parallel and vertical mounting plates 11 are formed on fixed support 1, proximity switch 2 is assembled on mounting plate 11, swing assembly 3 includes swing lever 31 and swing baffle 32, swing lever 31 is hingedly connected between mounting plate 11, in natural state, swing lever 31 is vertical, the lower end of swing lever 31 forms swing baffle 32, the upper end side of swing lever 31 shields the sensing surface of proximity switch 2, swing baffle 32 is pushed by barrier and makes swing lever 31 swing, the upper end side of swing lever 31 after swinging starts to separate from the sensing surface of proximity switch 2, to trigger proximity switch 2, triggered proximity switch 2 feedback signal to the ECU of wide-body vehicle, and ECU controls the launch throttle pedal 5 of wide-body vehicle in idle state.

[0030] Specifically, fixed support 1 is connected on the frame of wide-body vehicle tail end by support fixing bolt 13, swing lever 31 of swing assembly 3 is hingedly connected between mounting plate 11 by hole bolt 33, locking nut 34, pad plate 35, washer 36 and pin 37 threaded in the side hole of hole bolt 33, electrical part includes proximity switch 2 and transition wire harness 21 for electrically connecting proximity switch 2, wherein, fixed support 1 is provided with protective cover 12, protective cover 12 is connected on fixed support 1 by protective cover 12 fixing bolt to envelope proximity switch 2. The protection device for preventing falling of wide-body vehicle reversing of the application is fixed on support 4 below frame tail beam by bolt, when vehicle is in stationary state, swing naturally droops, and swing assembly 3 can be adjusted 100mm up and down according to actual height. Transition wire harness 21 is respectively connected with instrument 7, Tbox and proximity switch 2 of vehicle, and is fixed with frame wire harness wiring tie.

[0031] In one specific embodiment of the utility model, swing baffle is obliquely arranged at the lower end of swing lever.

[0032] In one specific embodiment of the utility model, proximity switch 2 triggers when swing baffle 32 separates from 1 / 3 of sensing area of the sensing surface of proximity switch 2.

[0033] In one specific embodiment of the utility model, proximity switch 2 has two groups, and the main body of two groups of proximity switch 2 is arranged on the side of corresponding mounting plate 11 away from swing assembly 3.

[0034] In one specific embodiment of the utility model, any one group of proximity switch 2 will feedback signal to the ECU of wide-body vehicle after being triggered, to control launch throttle pedal 5 of wide-body vehicle in idle state.

[0035] In one specific embodiment of this utility model, under any circumstances, when the level signals collected by the switching input ports of the two sets of proximity switches 2 are different, the reversing fault indication system of the wide-body vehicle will be triggered.

[0036] After equipping the wide-body vehicle reversing anti-fall protection device of this application, when the wide-body vehicle is in reverse gear and reversing, if the swing baffle 32 collides with an obstacle, the obstacle will push the swing baffle 32 in the direction of the vehicle's forward movement, causing the upper end of the swing baffle 32 to swing backward. When the swing baffle 32 disengages from the cross-section of the proximity switch 2 by 1 / 3, it triggers the sensing of both proximity switches 2, and both proximity switches 2 simultaneously send signals to the instrument panel 7. After processing, the instrument panel 7 sends the signal to the engine controller ECU of the engine 6. The ECU controls the engine 6 accelerator pedal 5 to maintain an engine speed of 600 rpm. Figure 4 As shown. The specific control logic involves adding two switch input ports, Pin19 and Pin20 (two proximity switches 2), to the instrument cluster 7. Normally, Pin19 and Pin20 are high-level signals. When reversing, if either Pin19 or Pin20 is not high-level and remains so for more than 200ms, the instrument cluster 7 controls the engine 6 to a maximum speed of 600rpm via the TSC1 command (TSC1 command: ID = 0x0C00000B, data: 03,C0,12,FF,FF,F). (F, FF, FF, transmission interval: 10ms / time), accompanied by a buzzer; at this moment, the vehicle enters idle state, and accelerator pedal is ineffective for backward movement, but lifting and tilting are effective; when the swing baffle 32 disengages from the obstacle and moves forward, the accelerator returns to normal, that is, instrument 7 controls the engine 6 to a maximum speed of 2050rpm via TSC1 command (TSC1 command: ID=0x0C00000B, data: 03,10,40,FF,FF,FF,FF,FF, transmission interval: 10ms / time). Note: When instrument 7 has multiple TSC1 commands with ID=0x0C00000B to send, speed comparison is required, and the output with the lowest speed limit is taken, and others are not output. In any case, if the states of Pin19 and Pin20 are inconsistent for 2 seconds, that is, if any proximity switch 2 malfunctions, instrument 7 will alarm "Reversing system sensor malfunction, please check" and the buzzer will sound for 5 seconds. At this time, the machine needs to be stopped and the reversing system sensor needs to be checked.

[0037] Specifically, during the operation of a vehicle equipped with the protection device of this application:

[0038] (1) Speeding up while running normally will not trigger the alarm.

[0039] (2) During normal driving, sudden braking will not trigger the alarm.

[0040] (3) Normal reversing will not trigger the alarm falsely;

[0041] (4) Normal reverse brake will not trigger false alarm;

[0042] The application can improve the safety of wide-body vehicle during the reverse dumping process by providing additional protection, reduce the risk of accidents, and has the following advantages:

[0043] (1) Simple structure, easy to implement;

[0044] (2) Low structure cost, easy to maintain;

[0045] (3) Small space occupation, simple arrangement;

[0046] (4) Reliable structure, long service life;

[0047] (5) Adjustable mechanism length, good adaptability;

[0048] (6) Simple operation; when reversing, the swing baffle 32 touches the obstacle, automatically enters the idle state, the driver is more convenient to operate, and the technical requirements for the driver are low.

[0049] (7) Improve driving safety, reduce the risk of accidents.

[0050] The technical effect of the wide-body vehicle reverse falling protection device of the application mainly reflects in the following aspects: through the automatic idle function after the reverse collision with the obstacle, a more safe and reliable reverse falling protection device is provided for the driver, the safety management requirements of the mining area are met, the driving safety is improved, and the purpose of avoiding accidents is achieved.

[0051] It should be understood that the specific embodiments described above are only used to explain the present application, and are not used to limit the present application. The obvious changes or variations derived from the spirit of the present application are still within the protection scope of the present application.

Claims

1. A protective device for preventing wide-body vehicles from falling off while reversing, characterized in that, include: A fixed bracket (1) is connected to the frame at the rear end of the wide-body vehicle, and two parallel and vertical mounting plates (11) are formed on the fixed bracket (1). A proximity switch (2) is mounted on the mounting plate (11); The swing assembly (3) includes a swing rod (31) and a swing baffle (32). The swing rod (31) is pivotally hinged between the mounting plates (11). In its natural state, the swing rod (31) is vertical. The lower end of the swing rod (31) forms the swing baffle (32). The upper side of the swing rod (31) blocks the sensing surface of the proximity switch (2). The swing baffle (32) is pushed by the obstacle, causing the swing rod (31) to swing. After the swing, the upper side of the swing rod (31) begins to separate from the sensing surface of the proximity switch (2) to trigger the proximity switch (2). The triggered proximity switch (2) sends a feedback signal to the ECU of the wide-body vehicle. The ECU controls the accelerator pedal (5) of the wide-body vehicle to idle.

2. The protective device for preventing wide-body vehicles from falling off during reversing as described in claim 1, characterized in that, The swing baffle (32) is inclinedly disposed at the lower end of the swing rod (31).

3. The protective device for preventing wide-body vehicles from falling off during reversing as described in claim 1, characterized in that, The proximity switch (2) is triggered when the swing baffle (32) moves away from 1 / 3 of the sensing area of ​​the sensing surface of the proximity switch (2).

4. The protective device for preventing wide-body vehicles from falling off during reversing as described in claim 1, characterized in that, There are two sets of proximity switches (2), and the main body of the two sets of proximity switches (2) is mounted on the side of the corresponding mounting plate (11) away from the swing assembly (3).

5. The protective device for preventing wide-body vehicles from falling off during reversing as described in claim 4, characterized in that, Once any of the proximity switches (2) is triggered, a feedback signal will be sent to the ECU of the wide-body vehicle to control the accelerator pedal (5) of the wide-body vehicle to idle.

6. The protective device for preventing wide-body vehicles from falling off during reversing as described in claim 5, characterized in that, In any case, if the level signals collected by the switching input ports of the two sets of proximity switches (2) are different, the reversing fault warning system of the wide-body vehicle will be triggered.

7. The protective device for preventing wide-body vehicles from falling off during reversing as described in claim 1, characterized in that, The fixed bracket (1) is provided with a protective cover (12) to enclose the proximity switch (2).

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