Forklift braking distance measuring device

Abstract

The utility model discloses a forklift braking distance measuring device which comprises an infrared transmitting unit, an infrared receiver, an ultrasonic sensor, a main control unit and an output unit. The infrared emission unit is arranged in the forklift, and the infrared emission unit is used for triggering and emitting an infrared signal when a brake pedal of the forklift is stepped down; the infrared receiver is used for receiving an infrared signal transmitted by the infrared transmitting unit; the ultrasonic sensor is arranged in front of or behind the advancing route of the detected forklift and is used for detecting the distance of the forklift; the main control unit is used for receiving signals of the infrared receiver and the ultrasonic sensor; the output unit is used for outputting detection results. The device is simple in structure, low in cost and easy to carry, and facilitates the high-efficiency detection of the braking distance of the forklift.

Description

Technical Field

[0001] The present application relates to the technical field of special vehicle inspection, and in particular to a forklift braking distance measuring device. Background Art

[0002] Braking distance is a key indicator of a forklift's braking system. It refers to the distance the vehicle travels during the entire braking period, from the moment the driver activates the controls to the moment the vehicle comes to a stop. The Technical Safety Regulations for Special Powered Vehicles in Plants (TSG 81-2022) require that forklift braking distances be tested according to the operating conditions, test methods, and requirements specified in 6.2.1 of Powered Industrial Vehicle Brake Performance and Parts (GB / T 18849-2011), and the results verified for compliance with the standard. During periodic (initial) inspections, testing is permitted under no-load conditions and at the maximum speed achievable at the inspection site. Therefore, the forklift's initial braking velocity and braking distance are mandatory measurements.

[0003] There are two main methods for measuring forklift braking distance: the drag mark method and a brake performance tester. The drag mark method is the simplest and most intuitive, but it suffers from large measurement errors, the measurement structure is for reference only, and the data reliability is low. Forklift braking performance testers currently in use on the market primarily utilize accelerometers or products developed based on GPS sensor principles. Accelerometer-based brake performance testers require high horizontal placement of the instrument during measurement, and the braking distance is calculated by performing a secondary integral calculation of the collected acceleration values, resulting in large errors. GPS-based brake performance testers must be conducted in open areas and will not function properly indoors or in environments with obstacles.

[0004] Currently, existing technologies also use binocular cameras to collect vehicle position data and then obtain vehicle braking distance. However, binocular cameras are expensive and need to be placed next to the vehicle's route, which requires a lot of site space. In addition, it is easy for the vehicle to drive out of the camera's field of view, requiring re-inspection. Summary of the Invention

[0005] The present application provides a forklift braking distance measuring device, which has the advantages of simple structure, low cost, easy portability, and convenient for efficient detection of the forklift braking distance.

[0006] The above-mentioned object of the present application is achieved through the following technical solution: a forklift braking distance measuring device, comprising:

[0007] An infrared emitting unit is provided in the forklift, and is used to be triggered and emit an infrared signal when the forklift brake pedal is stepped on;

[0008] An infrared receiver, configured to receive the infrared signal emitted by the infrared emitting unit;

[0009] Ultrasonic sensors are placed in front of or behind the forklift being tested and detect the distance to the forklift;

[0010] A main control unit, used to receive signals from the infrared receiver and ultrasonic sensor;

[0011] and an output unit for outputting the detection results.

[0012] A further solution of the present application is that the infrared emitting unit includes:

[0013] Infrared transmitter, used to send infrared signals;

[0014] A first power supply module, used to supply power to the infrared emitter;

[0015] and a trigger button, wherein the infrared transmitter emits an infrared signal when the trigger button is triggered;

[0016] Wherein, the trigger button is installed on or below the forklift brake pedal.

[0017] A further solution of the present application is that the infrared emitting unit includes a shell and a magic buckle arranged on the shell, the infrared emitter, the first power module and the trigger button are all arranged in the shell, and the trigger button is arranged on the surface of the shell, and the magic buckle is used to connect with the forklift brake pedal.

[0018] A further solution of the present application is that the output unit includes a display module for displaying the detection results.

[0019] A further solution of the present application is that the output unit includes a printing module for printing the test results.

[0020] A further solution of the present application is that it also includes a control box and a tripod, wherein the infrared receiver, ultrasonic sensor, main control unit and output unit are all arranged in the control box, and the control box is placed on the tripod, and a second power supply module is provided in the control box.

[0021] In summary, the beneficial effects of this application are:

[0022] 1. This application uses an infrared emitting unit to capture the braking moment of a forklift. The infrared emitting unit is implemented by an infrared emitter, a first power module, and a trigger button. It has a simple structure, does not require a control chip or wireless communication module, and is low-cost. The infrared emitting unit is mounted on the forklift brake pedal via a magic buckle, making it easy to install and remove, facilitating rapid deployment and removal.

[0023] 2. This application uses ultrasonic sensors to detect forklift distance, thereby enabling forklift braking distance detection. Ultrasonic sensors are compact and offer high ranging accuracy, facilitating accurate detection results. Compared to existing binocular camera solutions, ultrasonic sensors are compact, inexpensive, and easy to deploy, making them highly applicable.

[0024] 3. The ultrasonic sensor in this application is installed in front of or behind the forklift's travel path. Therefore, the requirements for the detection site are relatively low. Only a path for the forklift to travel is required for the braking distance detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the principle of a forklift braking distance measuring device of the present application;

[0026] Figure 2 This is a schematic diagram of the deployment of a forklift braking distance measuring device of the present application.

[0027] In the figure, 1, forklift; 2, infrared emission unit; 3, control box; 4, tripod; DETAILED DESCRIPTION

[0028] The specific implementation of the present application is described in detail below with reference to the accompanying drawings.

[0029] Example: A forklift braking distance measuring device, referring to Figure 1-2 , including an infrared transmitting unit, an infrared receiver, an ultrasonic sensor, a main control unit and an output unit.

[0030] Infrared emitting unit 2 is installed in forklift 1. It is triggered and emits an infrared signal when the forklift's brake pedal is depressed. The infrared emitting unit comprises an infrared emitter, a first power module, and a trigger button. The infrared emitter emits an infrared signal; the first power module powers the infrared emitter. The infrared emitter emits an infrared signal when the trigger button is activated. The trigger button is mounted on or below the forklift's brake pedal.

[0031] Specifically, in this embodiment, the infrared emitting unit 2 includes a housing and a hook and loop fastener mounted on the housing. The infrared emitter, first power module, and trigger button are all housed within the housing. The trigger button is located on the housing surface, and the hook and loop fastener is used to connect to the forklift's brake pedal. The infrared emitter utilizes an infrared emitting diode, and the first power module utilizes a dry cell or button cell. Therefore, the infrared emitting diode can be controlled via the trigger button without requiring a control chip.

[0032] During the inspection, when the driver steps on the forklift brake pedal, the trigger button is triggered and the infrared emitting diode sends out an infrared signal.

[0033] The infrared receiver is used to receive the infrared signal emitted by the infrared emitting unit. In this embodiment, the infrared receiver adopts a photosensitive diode corresponding to the wavelength of the infrared emitting diode.

[0034] The ultrasonic sensor is placed in front of or behind the forklift being tested and detects the distance to the forklift.

[0035] The main control unit is used to receive signals from the infrared receiver and the ultrasonic sensor; it processes the signals received by the ultrasonic sensor and calculates the speed of the forklift based on the obtained distance.

[0036] The output unit is used to output the test results. In this embodiment, the output unit includes a display module and a printing module. The display module is a display screen for displaying the test results; the printing module is a printer for printing the test results.

[0037] Specifically, in this embodiment, a control box 3 and a tripod 4 are also included. The infrared receiver, ultrasonic sensor, main control unit and output unit are all arranged in the control box 3. In order not to affect the detection of the infrared receiver and ultrasonic sensor, the infrared receiver and ultrasonic sensor are arranged on the side of the control box 3, or can be extended out of the control box 3.

[0038] The control box 3 is placed on a tripod 4 for deployment at a detection site.

[0039] A second power supply module is provided in the control box 3. The second power supply module may be a battery module or a power plug for connecting to the mains.

[0040] During testing, the control box is first deployed to the test site using a tripod and positioned in the path of the forklift being tested. The infrared transmitter is then attached to the brake pedal using Velcro. The vehicle then enters the test site, drives along the designated path, and brakes. The infrared receiver captures the braking moment, while the ultrasonic sensor measures the distance to the forklift, thereby determining its speed. The required test results (braking speed and braking distance) are then displayed and printed.

[0041] After the test is completed, the infrared emission unit is removed and deployed to the next vehicle to be tested.

[0042] It can be understood that in a specific embodiment, one control box can correspond to multiple infrared emission units for deployment on multiple vehicles, which is beneficial to improve efficiency when detecting multiple vehicles.

[0043] The above is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this field, several variations and improvements can be made without departing from the creative concept of the present application, and these all fall within the scope of protection of the present application.

Claims

1. A forklift braking distance measuring device, characterized in that: include: An infrared emitting unit is provided in the forklift, and is used to be triggered and emit an infrared signal when the forklift brake pedal is stepped on; An infrared receiver, configured to receive the infrared signal emitted by the infrared emitting unit; Ultrasonic sensors are placed in front of or behind the forklift being tested and detect the distance to the forklift; A main control unit, used to receive signals from the infrared receiver and ultrasonic sensor; and an output unit, configured to output the detection result; The infrared emitting unit comprises: Infrared transmitter, used to send infrared signals; A first power supply module, used to supply power to the infrared emitter; and a trigger button, wherein the infrared transmitter emits an infrared signal when the trigger button is triggered; Wherein, the trigger button is installed on or below the forklift brake pedal; The infrared emitting unit includes a housing and a magic buckle provided on the housing. The infrared emitter, the first power module and the trigger button are all provided in the housing. The trigger button is provided on the surface of the housing. The magic buckle is used to connect with the brake pedal of the forklift. It also includes a control box and a tripod. The infrared receiver, ultrasonic sensor, main control unit and output unit are all arranged in the control box. The control box is placed on the tripod. A second power supply module is provided in the control box.

2. The forklift braking distance measuring device according to claim 1, characterized in that: The output unit includes a display module for displaying the detection results.

3. The forklift braking distance measuring device according to claim 1, characterized in that: The output unit includes a printing module for printing the detection results.

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