A driving safety monitoring system and engineering equipment

Abstract

The present invention discloses a driving safety monitoring system and an engineering device, including a controller, a position detector and a power supply device; an output end of the position detector is electrically connected to an input end of the controller, and can detect whether a boom locking mechanism and a boom locking fulcrum reach a locking state and are in different working states; an output end of the controller is electrically connected to a travel control valve group, and can send a corresponding control signal to the travel control valve group according to the working state of the position detector; the power supply device supplies power to the whole system. The present invention detects whether the whole vehicle is in a driving state through the position detector, and protects the vehicle and the driver by forcing the travel control valve group to be in neutral and the display to display an alarm reminder signal, so as to reduce the safety risk of driving with the boom not locked in place.

Description

Technical Field

[0001] The present invention belongs to the technical field of construction machinery control, and particularly relates to an engineering equipment of a driving safety monitoring system. Background Art

[0002] At present, the backhoe loader is widely used in the field of construction machinery due to its multi-function and high mobility. Its working characteristics are: a front loading device and a rear excavating device. Such a structural characteristic requires that the excavating device must be in a safe state when the whole vehicle is driving. However, if the operator forgets to lock the boom or the locking is not in place and starts driving, this not only threatens the personal safety of the operator, but also easily damages the machine.

[0003] In order to prevent the excavating boom from swinging when the backhoe loader is driving, a common solution is to hinge a mechanical locking mechanism on the slewing mechanism. The operator raises the boom locking mechanism in the cab through a flexible shaft, and clamps the boom locking mechanism to the boom locking fulcrum by loosening the locking flexible shaft to mechanically lock the excavating boom and ensure the driving safety of the backhoe loader. Although the prior art is provided with a mechanical device for boom locking, if the locking is in place, it can effectively prevent the harm of the boom during driving. However, due to the operator's habits, there will be situations where the mechanical locking mechanism is not in the ideal position or the operator forgets to lock the boom and starts driving, which not only threatens the personal safety of the operator, but also easily damages the machine. Summary of the Invention

[0004] The purpose of the present invention is to overcome the defect of inconvenient use in the prior art, and provide a driving safety monitoring system and engineering equipment, which can forcibly control the state of the travel control valve group according to the state of the boom locking mechanism, improving the safety.

[0005] To solve the problems of the prior art, the present invention discloses a driving safety monitoring system, including a controller, a position detector and a power supply device;

[0006] The output end of the position detector is electrically connected to the input end of the controller, and can detect whether the boom locking mechanism and the boom locking fulcrum reach the locking state and are in different working states;

[0007] The output end of the controller is electrically connected to the travel control valve group, and can send corresponding control signals to the travel control valve group according to the working state of the position detector;

[0008] The power supply device supplies power to the whole system.

[0009] Further, when the position detector detects that the boom locking mechanism and the boom locking fulcrum have not reached the locked state and are in the first working state, the controller sends a neutral signal that is not controlled by the gear lever to the travel control valve group according to the first working state of the position detector.

[0010] Further, when the position detector detects that the boom locking mechanism and the boom locking fulcrum have reached the locked state and are in the second working state, the controller sends a working signal that is controlled by the gear lever to the travel control valve group according to the second working state of the position detector.

[0011] Further, the position detector is a normally open proximity switch, its first working state is the normally open state, and its second working state is the closed state.

[0012] Further, it further includes a display, and the input end of the display is electrically connected to the output end of the controller;

[0013] The controller can send a warning image signal to the display according to the first working state of the position detector, and the controller can send a non-warning image signal to the display according to the second working state of the position detector.

[0014] Further, it further includes a forced switch, the output end of the forced switch is electrically connected to the input end of the controller, and the controller can send a working signal that is controlled by the gear lever to the travel control valve group in response to the signal input by the forced switch.

[0015] Further, the controller further includes a detection module capable of detecting faults of the proximity switch and its circuit.

[0016] The present invention also provides a construction equipment, including a boom, a gear lever, a travel control valve group, a boom locking mechanism and a locking controller; a boom locking fulcrum is provided on the boom, the locking controller can control the boom locking mechanism and the boom locking fulcrum to reach the locked state, and the travel control valve group can control the boom to work according to the gear signal of the gear lever; it further includes the above-mentioned travel safety monitoring system, and the proximity switch is arranged on the boom locking fulcrum.

[0017] Further, it further includes a slewing mechanism, and the boom is installed on the slewing mechanism.

[0018] Further, the construction equipment is an excavator-loader.

[0019] The beneficial effects of the present invention are:

[0020] 1. The present invention detects whether the whole vehicle is in a driving state through a position detector, and protects the vehicle and the driver by forcing the driving control valve group into neutral and displaying an alarm reminder signal on the display, so as to reduce the safety risk of driving with the boom not locked in place.

[0021] 2. When the position detector fails or its circuit fails, the driver can press the forced switch, and the system allows the driver to control the driving control valve group through the gear lever without considering the input of the proximity switch signal, so as to realize effective driving control of the wheel loader. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is the system connection block diagram of the driving safety monitoring system in the present invention;

[0023] Figure 2 is the structural schematic diagram of the boom in the engineering equipment of the present invention;

[0024] Figure 3 is Figure 2 the front view of the structure of the boom shown. DETAILED DESCRIPTION OF THE INVENTION

[0025] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention, and should not be used to limit the protection scope of the present invention.

[0026] As Figure 2 and 3 shown, an engineering equipment includes a boom 6, a gear lever 9, a driving control valve group 8, a boom locking mechanism 4, a locking controller 10, and a driving safety monitoring system; a boom locking fulcrum 5 is provided on the boom 6, and the locking controller 10 can control the boom locking mechanism 4 and the boom locking fulcrum 5 to reach a locked state, and the driving control valve group 8 can control the boom 6 to work according to the gear signal of the gear lever 9.

[0027] In one embodiment, the engineering equipment further includes a slewing mechanism 7, the boom 6 is installed on the slewing mechanism 7, and the locking controller 10 is a locking flexible shaft.

[0028] In one embodiment, the engineering equipment is a wheel loader.

[0029] As Figure 1 shown, the driving safety monitoring system includes a controller 2, a position detector 3, and a power supply device 1. The proximity switch 3 is provided on the boom locking fulcrum 5. The output end of the position detector 3 is electrically connected to the input end of the controller 2, and can detect whether the boom locking mechanism 4 and the boom locking fulcrum 5 reach a locked state and are in different working states. The power supply device 1 supplies power to the whole system.

[0030] The output end of the controller 2 is electrically connected to the traveling control valve group 8, and can send corresponding control signals to the traveling control valve group 8 according to the working state of the position detector 3.

[0031] In one embodiment, when the position detector 3 detects that the boom locking mechanism 4 and the boom locking fulcrum 5 do not reach the locking state and are in the first working state, the controller 2 sends a neutral gear signal that is not controlled by the gear shift lever 9 to the traveling control valve group 8 according to the first working state of the position detector 3.

[0032] In one embodiment, when the position detector 3 detects that the boom locking mechanism 4 and the boom locking fulcrum 5 reach the locking state and are in the second working state, the controller 2 sends a working signal that is controlled by the gear shift lever 9 to the traveling control valve group 8 according to the second working state of the position detector 3.

[0033] In one embodiment, the position detector 3 is a normally open proximity switch, its first working state is the normally open state, and its second working state is the closed state.

[0034] In one embodiment, the traveling safety monitoring system further includes a display 11, and the input end of the display 11 is electrically connected to the output end of the controller 2.

[0035] The controller 2 can send a warning image signal to the display 11 according to the first working state of the position detector 3, and the controller 2 can send a non-warning image signal to the display 11 according to the second working state of the position detector 3.

[0036] In one embodiment, the traveling safety monitoring system further includes a forced switch 12, the output end of the forced switch 12 is electrically connected to the input end of the controller 2, and the controller 2 can send a working signal that is controlled by the gear shift lever 9 to the traveling control valve group 8 in response to the signal input by the forced switch 12.

[0037] In one embodiment, the controller 2 further includes a detection module capable of detecting the proximity switch 3 and its line faults.

[0038] The working principle is as follows:

[0039] When the wheel loader is about to enter the driving state and preparation state, the driver operates to retract the boom 6 of the digging end to the in-place position, then raises the boom locking mechanism 4 through the locking controller 10 installed inside the cab, and clamps the boom locking mechanism 4 to the boom locking fulcrum 5 by controlling the locking controller 10, thereby fixing the boom 6. At this time, the position detector 3 detects that the boom locking mechanism 4 is in contact with the boom locking fulcrum 5 in place, the position detector 3 closes, and the controller 2 can allow the whole vehicle to enter the driving state only after detecting the closing signal of the position detector 3. The driving operation of the gear shift lever 9 is effective, and the driving control valve group 8 is controlled, and the driving control is effective.

[0040] When the driver wants to enter the driving preparation state but forgets to clamp the boom locking mechanism 4 to the boom locking fulcrum 5, or the boom locking mechanism 4 fails to contact the boom locking fulcrum 5 in place after the operation, at this time, the position detector 3 is in the normally open state, and the controller 2 detects that there is no signal input from the position detector 3, then the input of the gear shift lever 9 is invalid, and the controller 2 outputs a control signal to force the driving control valve group 8 to be in neutral, and the driver cannot control the driving operation. At the same time, the controller 2 sends a prompt alarm signal to the display 11 through the bus, and the display 11 displays the alarm signal "The boom is not locked, please lock it again!", thereby preventing the driver from performing driving operations when the boom 6 is not locked or not locked in place; when the driver operates and locks the boom 6 in place again, the gear shift lever 9 must be adjusted to the neutral position again before the system can perform driving control operations again.

[0041] When the position detector 3 of the wheel loader is faulty or the line from the position detector 3 to the controller 2 fails, at this time, the driver can press the forced switch 12, and the controller 2 detects the input of the forced switch 12. The system allows the driver to perform effective driving control operations on the driving control valve group 8 through the gear shift lever 9 without considering the signal input of the position detector 3.

[0042] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and deformations can be made, and these improvements and deformations should also be regarded as the protection scope of the present invention.

Claims

1. A driving safety monitoring system, characterized in that: It includes a controller (2), a position detector (3) and a power supply device (1); The output end of the position detector (3) is electrically connected to the input end of the controller (2), and it can detect whether the boom locking mechanism (4) and the boom locking fulcrum (5) reach the locking state and are in different working states; The output end of the controller (2) is electrically connected to the travel control valve group (8), and it can send corresponding control signals to the travel control valve group (8) according to the working state of the position detector (3); The power supply device (1) supplies power to the whole system; When the position detector (3) detects that the boom locking mechanism (4) and the boom locking fulcrum (5) do not reach the locking state and are in the first working state, the controller (2) sends a neutral gear signal that is not controlled by the gear lever (9) to the travel control valve group (8) according to the first working state of the position detector (3); When the position detector (3) detects that the boom locking mechanism (4) and the boom locking fulcrum (5) reach the locking state and are in the second working state, the controller (2) sends a working signal that is controlled by the gear lever (9) to the travel control valve group (8) according to the second working state of the position detector (3); It further includes a forced switch (12), the output end of the forced switch (12) is electrically connected to the input end of the controller (2), and the controller (2) can send a working signal that is controlled by the gear lever (9) to the travel control valve group (8) in response to the signal input by the forced switch (12); The position detector (3) is a normally open proximity switch, its first working state is the normally open state, and its second working state is the closed state; It further includes a display (11), the input end of the display (11) is electrically connected to the output end of the controller (2); The controller (2) can send a warning image signal to the display (11) according to the first working state of the position detector (3), and the controller (2) can send a non-warning image signal to the display (11) according to the second working state of the position detector (3).

2. The driving safety monitoring system according to claim 1, characterized in that: The controller (2) further includes a detection module that can detect the position detector (3) and its circuit faults.

3. An engineering device, comprising a boom (6), a gear shift lever (9), a travel control valve group (8), a boom locking mechanism (4) and a locking controller (10); a boom locking fulcrum (5) is provided on the boom (6), the locking controller (10) can control the boom locking mechanism (4) and the boom locking fulcrum (5) to reach a locking state, and the travel control valve group (8) can control the operation of the boom (6) according to the gear signal of the gear shift lever (9); it is characterized in that: It further includes a travel safety monitoring system as described in claim 1, and the position detector (3) is arranged on the boom locking fulcrum (5).

4. An engineering device according to claim 3, characterized in that: It further includes a slewing mechanism (7), and the boom (6) is installed on the slewing mechanism (7).

5. An engineering device according to claim 3, characterized in that: The engineering equipment is an excavator loader.

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