Forklift anti-falling detection system

Abstract

The utility model discloses an anti-falling detection system for a forklift. The anti-falling detection system comprises a first road condition acquisition device, a second road condition acquisition device and a controller, the first road condition acquisition device and the second road condition acquisition device are respectively mounted at different positions behind the forklift; the controller is connected with the first road condition acquisition device to receive a first measurement distance acquired by the first road condition acquisition device, and outputs first alarm information and / or controls the operation speed of the forklift to a first speed based on the first measurement distance; and the controller is connected with the second road condition acquisition device to receive a second measurement distance acquired by the second road condition acquisition device, and outputs second alarm information and / or controls the operation speed of the forklift to a second speed based on the second measurement distance. The two road condition collecting devices are installed at different positions, alarming and / or speed control can be carried out respectively when the forklift enters different areas (such as a deceleration area or a parking area), and the safety of the forklift is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle safety, in particular to a forklift anti-fall detection system. Background Art

[0002] When loading / unloading goods, the forklift needs to drive to the edge of the platform. If the forklift drives too fast or the driver misjudges the edge of the platform, it is easy to cause the forklift to fall from the platform, which may cause a serious accident with the machine destroyed and people killed. In addition, when the forklift is transporting goods, there may be some bumps and steps in certain areas. If it does not slow down or stop in time when entering these areas, it is also easy to cause accidents.

[0003] In order to prevent forklift accidents, the existing technology installs anti-fall distance measurement sensors on forklifts to monitor the distance between the forklift and the edge of the platform. When the real-time distance measurement value exceeds the set threshold, an automatic alarm is triggered to remind the forklift driver to turn or stop immediately to avoid accidents. However, the anti-fall distance measurement sensors in the existing technology only include one or two sensors set at the same height. They will only give an alarm once according to the distance measurement value of the anti-fall distance measurement sensors, and cannot give graded alarms when the forklift enters the risk area, resulting in low detection and control accuracy, and the forklift is still likely to fall. Utility Model Content

[0004] The main purpose of the utility model is to overcome the above-mentioned defects in the prior art and propose a forklift anti-fall detection system, which is equipped with two road condition collection devices at different positions, and can respectively alarm and / or control the speed when the forklift enters different areas (such as deceleration areas or parking areas), thereby achieving more accurate reminders and controls and improving the safety of the forklift.

[0005] The utility model adopts the following technical solutions:

[0006] A forklift anti-fall detection system comprises: a first road condition collection device, a second road condition collection device and a controller; the first road condition collection device and the second road condition collection device are respectively installed at different positions behind the forklift; the controller is connected to the first road condition collection device to receive a first measurement distance collected by the first road condition collection device, and outputs a first alarm message based on the first measurement distance and / or controls the forklift running speed to a first speed; the controller is connected to the second road condition collection device to receive a second measurement distance collected by the second road condition collection device, and outputs a second alarm message based on the second measurement distance and / or controls the forklift running speed to a second speed.

[0007] Preferably, the installation height of the first road condition collection device is greater than the installation height of the second road condition collection device; or, the installation angle of the first road condition collection device is greater than the installation angle of the second road condition collection device.

[0008] Preferably, the first road condition collection device is installed behind the overhead guard of the forklift; the first road condition collection device is installed behind the counterweight of the forklift.

[0009] Preferably, the first road condition collection device and the overhead guardrail form a certain inclination angle; the second road condition collection device and the counterweight form a certain inclination angle.

[0010] Preferably, the inclination angle between the first road condition collection device and the overhead guardrail is 20° to 80°; the inclination angle between the second road condition collection device and the counterweight is 20° to 80°.

[0011] Preferably, the forklift anti-fall detection system further includes: a first bracket; the first bracket is installed behind the overhead guardrail; and the first road condition collection device is installed on the first bracket.

[0012] Preferably, the first bracket is a fixed bracket or an adjustable bracket.

[0013] Preferably, the forklift anti-fall detection system further includes: a second bracket; the second bracket is installed behind the counterweight; and the second road condition collection device is installed on the second bracket.

[0014] Preferably, the second bracket is a fixed bracket or an adjustable bracket.

[0015] Preferably, the forklift anti-fall detection system further includes: a rocker switch; the rocker switch is connected to the controller; and the rocker switch is arranged in the cab.

[0016] It can be seen from the above description of the utility model that compared with the prior art, the utility model has the following beneficial effects:

[0017] (1) The utility model includes two road condition collection devices installed at different positions behind the forklift, which can detect when the forklift enters different areas (such as deceleration areas or parking areas, and the deceleration areas and parking areas can be divided according to the distance from the risk point), so as to perform different alarms and / or speed controls in different areas, realize more accurate reminders and controls, and improve the safety of the forklift;

[0018] (2) The installation angles of the first road condition collection device and the second road condition collection device of the utility model can be adjusted according to application requirements, and can be adjusted by an adjustable bracket to achieve more accurate distance measurement;

[0019] (3) The utility model also provides a rocker switch connected to the controller in the driving cabin, so that the driver can turn on the detection when entering the risk area (platform area or other concave-convex area) to improve the safety of the forklift; and turn off the detection when leaving the risk area (platform area or other concave-convex area) to prevent misjudgment from affecting the normal operation of the forklift.

[0020] Based on the detailed description of the specific embodiments of the present invention in combination with the accompanying drawings below, those skilled in the art will become more aware of the above and other purposes, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the structure of the forklift anti-fall detection system of this embodiment;

[0022] Explanation of reference numerals: 1. First road condition collection device; 2. Second road condition collection device; 3. Controller; 4. Rear pillar; 5. Counterweight; 6. First bracket; 7. Second bracket; 8. Rocker switch; 9. Deceleration area; 10. Parking area. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0024] In the description of the present utility model, it should be noted that the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0025] In the description of the present invention, it should be noted that the terms "front", "rear", "inside", "outside", "top / bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and 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 therefore cannot be understood as a limitation on the present invention.

[0026] In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "sleeved / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium. It can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0027] See also Figure 1 As shown, the present embodiment is a forklift anti-fall detection system, comprising: a first road condition collection device 1, a second road condition collection device 2 and a controller 3; the first road condition collection device 1 is installed behind the rear column 4 of the overhead guard; the second road condition collection device 2 is installed behind the counterweight 5; the controller 3 is connected to the first road condition collection device 1 to receive the first measurement distance collected by the first road condition collection device 1, and outputs a first alarm message based on the first measurement distance and / or controls the forklift running speed to the first speed; the controller 3 is connected to the second road condition collection device 2 to receive the second measurement distance collected by the second road condition collection device 2, and outputs a second alarm message based on the second measurement distance and / or controls the forklift running speed to the second speed.

[0028] It should be noted that the first road condition collection device 1 and the second road condition collection device 2 may also be installed at other locations behind the forklift, and the installation may be carried out according to specific needs, and this embodiment does not limit this.

[0029] Specifically, the first road condition collection device 1 and the second road condition collection device 2 can be any one of a laser sensor, an ultrasonic sensor, a photoelectric sensor, an RFID / UWB positioning sensor or a visual sensor, or other sensors, as long as they can perform real-time ranging, and this embodiment does not impose any restrictions.

[0030] The working principle of the laser sensor is: a laser light source is sent to a distance, and when it hits a bumpy step, the distance of the reflected distance measurement will change, and then it will be fed back to the forklift controller 3 in real time for alarm or speed control.

[0031] The working principle of the ultrasonic sensor is: a beam of sound waves is sent to a distance, and when it hits a bumpy step, the distance of the reflected distance measurement will change, and then it will be fed back to the forklift controller 3 in real time for alarm or speed control.

[0032] The working principle of the photoelectric sensor is: a light wave is emitted to a distance, and when it hits a bumpy step, a receiver needs to be arranged on the step, so as to provide real-time feedback to the forklift controller 3 for alarm or speed control.

[0033] The working principle of the positioning sensor is: tags need to be placed on the uneven ground, and the road condition collection device is a reader / writer installed on a forklift. With the reading and writing base station as the center, it can search for road conditions within 5 to 10 meters.

[0034] The working principle of the visual sensor is: use a 2D camera to obtain the image of the target object, and calculate the pixel size and distance of the object in the image to deduce the distance between the target object and the camera; or use a 3D camera to obtain information about the steps.

[0035] In this embodiment, the first road condition collection device 1 uses a laser distance measuring sensor Sick DT50-2 Pro, and its distance measuring accuracy depends on multiple factors, such as target reflectivity, ambient light intensity, sensor installation height and angle, etc. Generally speaking, its distance measuring accuracy is ±30 mm, and the distance measuring range is 0.1 m to 50 m. The second road condition collection device 2 uses an ultrasonic distance measuring sensor UMB8000-70GM-I-V15, with a distance measuring range of 0.2 m to 5 m and an accuracy of up to ±10 mm.

[0036] In this embodiment, the installation height of the first road condition collection device 1 is greater than the installation height of the second road condition collection device 2, and the risk area includes the deceleration area 9 and the parking area 10. Specifically, the controller 3 determines whether the forklift enters the deceleration area 9 according to the first measurement distance collected in real time by the first road condition collection device 1. If it enters, the controller controls the alarm device to issue a first alarm message, prompting "the forklift enters the deceleration area 9 and is about to decelerate", etc., and controls the forklift to decelerate at a preset speed. The controller 3 determines whether the forklift enters the deceleration area 9 according to the first measurement distance collected in real time by the first road condition collection device 1. Specifically, it can be determined by comparing the first measurement distance with the first preset distance. When the first measurement distance is greater than the first preset distance, it is determined that the forklift enters the deceleration area 9. Correspondingly, the controller 3 determines whether the forklift enters the parking area 10 according to the second measurement distance collected in real time by the second road condition collection device 2. If it enters, the controller controls the alarm device to issue a second alarm message, prompting "the forklift enters the parking area 10 and is about to stop", etc., and controls the forklift to stop immediately. The controller 3 determines whether the forklift enters the deceleration area 9 according to the second measured distance collected in real time by the second road condition collection device 2. Specifically, it can be by comparing the second measured distance with the second preset distance. When the second measured distance is greater than the second preset distance, it is determined that the forklift enters the parking area 10.

[0037] It should be noted that the installation height of the first road condition collection device 1 can also be equal to the installation height of the second road condition collection device 2, but the installation angle of the first road condition collection device 1 is greater than the installation angle of the second road condition collection device 2. The specific installation positions (height and / or angles) of the first road condition collection device 1 and the second road condition collection device 2 can be set as needed, and this embodiment does not impose any restrictions.

[0038] In addition, the risk area does not necessarily include the deceleration area 9 and the parking area 10, and may also include two deceleration areas. How the specific areas are divided and how the speed is controlled can be set according to needs.

[0039] By installing two road condition collection devices at different heights behind the forklift, it is possible to detect whether the forklift enters the deceleration area 9 or the parking area 10, thereby performing different alarms and / or speed controls, achieving more accurate reminders and controls, and improving the safety of the forklift.

[0040] Furthermore, in order to better achieve the measurement of the ground distance, the first road condition collection device 1 and the rear pillar 4 form a certain inclination angle; the second road condition collection device 2 and the counterweight 5 form a certain inclination angle.

[0041] In this embodiment, the inclination angle between the first road condition collection device 1 and the rear pillar 4 is 20° to 80°; the inclination angle between the second road condition collection device 2 and the counterweight 5 is 20° to 80°.

[0042] Furthermore, the forklift anti-fall detection system also includes a first bracket 6 and a second bracket 7, and the first bracket and the second bracket 7 are fixed brackets or adjustable brackets. In order to better meet the measurement requirements according to different application scenarios, the first bracket and the second bracket 7 are set as adjustable brackets to meet the installation height and angle adjustment requirements of the first road condition collection device 1 and the second road condition collection device 2.

[0043] Specifically, the first bracket 6 is installed behind the rear column 4 of the overhead guard frame; the first road condition collection device 1 is installed on the first bracket 6. The second bracket 7 is installed behind the counterweight 5; the second road condition collection device 2 is installed on the second bracket 7.

[0044] Furthermore, the forklift anti-fall detection system further includes: a rocker switch 8 ; the rocker switch 8 is connected to the controller 3 .

[0045] In this embodiment, the rocker switch 8 is arranged in the cab. When entering the risk area, the driver can press the rocker switch 8 to start the detection to improve the safety of the forklift; when leaving the risk area, the driver can press the rocker switch 8 again to turn off the detection to prevent misjudgment from affecting the normal operation of the forklift.

[0046] The above is only a specific implementation method of the utility model, but the design concept of the utility model is not limited to this. Any non-substantial changes to the utility model using this concept shall be deemed as an infringement of the protection scope of the utility model.

Claims

1. A forklift anti-fall detection system, characterized in that: include: A first road condition collection device, a second road condition collection device and a controller; The first road condition collection device and the second road condition collection device are respectively installed at different positions behind the forklift; The controller is connected to the first road condition collection device to receive the first measured distance collected by the first road condition collection device, and outputs a first alarm message based on the first measured distance and / or controls the forklift running speed to a first speed; the controller is connected to the second road condition collection device to receive the second measured distance collected by the second road condition collection device, and outputs a second alarm message based on the second measured distance and / or controls the forklift running speed to a second speed.

2. The forklift anti-fall detection system according to claim 1, characterized in that: The installation height of the first road condition collection device is greater than the installation height of the second road condition collection device; or, the installation angle of the first road condition collection device is greater than the installation angle of the second road condition collection device.

3. The forklift anti-fall detection system according to claim 1, characterized in that: The first road condition collection device is installed behind the overhead guard of the forklift; the first road condition collection device is installed behind the counterweight of the forklift.

4. The forklift anti-fall detection system according to claim 3, characterized in that: The first road condition collection device and the overhead guardrail form a certain inclination angle; the second road condition collection device and the counterweight form a certain inclination angle.

5. The forklift anti-fall detection system according to claim 4, characterized in that: The inclination angle between the first road condition collection device and the overhead guardrail is 20° to 80°; the inclination angle between the second road condition collection device and the counterweight is 20° to 80°.

6. The forklift anti-fall detection system according to claim 1, characterized in that: Also includes: First bracket; The first bracket is installed behind the overhead guard; The first road condition collecting device is installed on the first bracket.

7. The forklift anti-fall detection system according to claim 6, characterized in that: The first bracket is a fixed bracket or an adjustable bracket.

8. The forklift anti-fall detection system according to claim 1, characterized in that: Also includes: Second bracket; The second bracket is installed behind the counterweight; The second road condition collecting device is installed on the second bracket.

9. The forklift anti-fall detection system according to claim 8, characterized in that: The second bracket is a fixed bracket or an adjustable bracket.

10. The forklift anti-fall detection system according to claim 1, characterized in that: Also includes: A rocker switch; the rocker switch is connected to a controller; the rocker switch is arranged in the cab.

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