CN110160801A - A kind of semitrailer air-pressure brake performance actual road test system - Google Patents

Abstract

The invention provides a semi-trailer air pressure brake performance road test system, a manual brake trigger module, a data acquisition module, a data calculator and a data display; the manual brake trigger module is located between the tractor and the trailer, and connected in series in the control pipeline, the data acquisition module is connected with a data calculator, and the data calculator is connected with a data display. The air pressure brake performance road test system of the present invention can realize the brake performance road test of all air pressure brake system trailer products by cooperating with a manual brake trigger module, a data acquisition module, a data calculator and a data display. The test system has powerful functions and various applications, and can be expanded to be used in related tests such as the dynamic performance and braking performance of automobiles and trains.

Description

A semi-trailer pneumatic brake performance road test system

technical field

The invention belongs to the technical field of vehicle air pressure braking performance test, in particular to a semi-trailer air pressure braking performance road test system.

Background technique

The semi-trailer is an important part of the road drop-and-hook transportation system. Due to the long body of the trailer and the large transportation quality, its braking performance is one of the key factors affecting road traffic safety. Most semi-trailers use air pressure braking system, so the air pressure braking performance of semi-trailer needs to be tested by road test. The performance of semi-trailer braking system is clearly stipulated in the United Nations Economic Commission for Europe Automobile Regulations ECE No. 13 and China's national mandatory standard GB12676 "Technical Requirements and Test Methods for Commercial Vehicle and Trailer Braking Systems".

At present, the traditional semi-trailer road test system is composed of a vehicle-mounted five-wheel instrument and a photoelectric data acquisition calculator, but the road test system is large in size and inconvenient to carry and install; after adding, the data processing operation is cumbersome and time-consuming, which seriously affects Test efficiency for road tests.

Therefore, a kind of novel road test system that can carry easily, operate simply, work efficiency is high is urgently needed on the market at present.

Contents of the invention

In view of this, the present invention aims to propose a semi-trailer air pressure brake performance road test system to realize the brake performance road test of all air brake system trailer products, and the test system is powerful and has various applications, which can be expanded for Tests related to dynamic performance and braking performance of any vehicle.

In order to achieve the above object, technical solution of the present invention is achieved in that way:

A road test system for pneumatic brake performance of a semi-trailer, including: a manual brake trigger module, including a shuttle valve, an air pressure gauge, and a manual control valve for air pressure flow. The air outlet of the shuttle valve is used to connect with the air inlet of the air pressure gauge, the air outlet of the air pressure gauge is used to connect with the air inlet of the air pressure flow manual control valve, and the air outlet of the air pressure flow manual control valve is used for It is connected in series with the semi-trailer in the control pipeline; the data acquisition module includes an air pressure sensor and a GPS collector, which are used to collect the air pressure signal and vehicle speed signal of the semi-trailer respectively; the data calculator is connected with the signal of the data acquisition module to receive the air pressure signal and vehicle speed signal and calculate; the data display is connected with the signal of the data calculator for data display.

Further, a first control switch is provided on the data channel connected between the data calculator and the signal output terminal of the air pressure sensor, and a first control switch is provided on the data channel connected between the data calculator and the signal output terminal of the GPS collector. There is a second control switch.

Further, the data calculator selects DEWE-43A data collector, connects the signal output end of the air pressure sensor through the analog channel, connects the signal output end of the GPS collector through the CAN channel, and connects the data display through the USB channel.

Further, the data display is a tablet computer.

Further, during the test, the data calculator and data display were fixed on the top of the dashboard of the cab, the air pressure sensor was fixed on the air storage tank and the brake chamber, and the GPS antenna receiver of the GPS collector was fixed on the top of the vehicle.

Compared with the prior art, the present invention has the following advantages:

(1) The pneumatic brake performance road test system of the present invention, in conjunction with the manual brake trigger module, data acquisition module, data calculator and data display, can realize the brake performance road test of trailer products of all pneumatic brake systems.

(2) The test system has powerful functions and various applications. It can be expanded to test items such as the dynamic performance and braking performance of automobiles and trains, as well as the dynamic performance, sliding performance, maximum speed performance and steep slope performance tests of other vehicles. At the same time, it can conveniently and quickly process the test results, easy to operate, disassemble and carry, and can effectively improve work efficiency.

Description of drawings

The drawings constituting a part of the present invention are used to provide a further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention. In the attached picture:

Fig. 1 is a block diagram of the test principle of the test system according to the embodiment of the present invention.

Explanation of reference signs:

1-shuttle valve; 11-air pressure gauge; 12-air pressure flow manual control valve; 2-air pressure signal; 21-air pressure sensor; 22-analog channel; 23-first control switch; 3-vehicle speed signal; 31-GPS collector ; 32-CAN channel; 33-second control switch; 4-data calculator; 5-USB channel; 6-data display.

Detailed ways

It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, a feature defined as "first", "second", etc. may expressly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention based on specific situations.

The present invention will be described in detail below with reference to the accompanying drawings and examples.

A semi-trailer pneumatic brake performance road test system, as shown in Figure 1, includes a manual brake trigger module, a data acquisition module, a data calculator 4 and a data display 6,

The manual brake trigger module is between the tractor and the tested trailer, and is connected in series in the control pipeline; specifically, the manual brake trigger module includes a shuttle valve 1, an air pressure gauge 11, an air pressure flow manual control valve 12. The two air inlets of the shuttle valve 1 are used to connect the control pipeline and the air tank of the tractor respectively, the air outlet of the shuttle valve 1 is used to connect with the air inlet of the air pressure gauge 11, and the air outlet of the air pressure gauge 11 is used for It is connected to the air inlet of the air pressure flow manual control valve 12, and the air outlet of the air pressure flow manual control valve 12 is used to connect in series with the semi-trailer in the control pipeline;

Described data acquisition module comprises air pressure sensor 21 and GPS collector 31, is respectively used to collect the air pressure signal and the vehicle speed signal of semi-trailer; Described data calculator 4 is connected with data acquisition module signal, receives air pressure signal and vehicle speed signal and Calculate; the data display 6 is a tablet computer, connected with the data calculator 4 for data display.

A first control switch 23 is arranged on the data channel connected between the data operator 4 and the signal output end of the air pressure sensor 21, and the data channel connected between the data operator 4 and the signal output end of the GPS collector 31 There is a second control switch 33 on it.

The new semi-trailer air pressure brake performance road test system tested in this embodiment needs 1 shuttle valve 1, 1 air pressure gauge 11, 1 manual flow control valve 12, 12 air pressure sensors 21, and 1 GPS collector 31 in total. , a data calculator 4, a data display 6, 12 related power supply and signal connection lines, and a number of air pressure pipelines. All the equipment can be put into the 800×600×250mm movable trolley tool box, which takes up little space and is easy to carry.

During the test, the data calculator 4 and the data display 6 are fixed on the top of the cab instrument panel, the air pressure sensor 21 is fixed on the air storage tank and the brake air chamber, and the GPS antenna receiver of the GPS collector 31 is fixed on the top of the vehicle .

In the practical application of the present invention, the manual brake trigger module is used to manually trigger the brake signal to brake the semi-trailer alone; Display the passed air pressure value, the air pressure flow manual control valve 12 controls the opening of the air pressure flow valve; the data acquisition module is used to collect the air pressure signal 2 and the vehicle speed signal 3, and is connected with the data calculator 4; The air pressure sensor 21 in the chamber processes the received air pressure data and is connected to the data calculator 4; the GPS collector 31 located on the top of the vehicle processes the received GPS data and is connected to the data calculator 4; The device 4 is used to collect and process the air pressure signal 2 sent by the air pressure sensor 21 and the vehicle speed signal 3 sent by the GPS collector 31 , and is connected to the data display 6 . The processing software of the data display 6 performs data display, and finally obtains the test result of the brake performance of the trailer.

In order to realize the high efficiency and convenience of data acquisition and data calculation and analysis, as well as unified and integrated processing of data, the data calculator 4 of the test system uses DEWE-43A data collector for data integration and calculation processing, which belongs to conventional technology, and DEWE-43A data collector is a kind of Modular data acquisition and signal analysis instrument, which is equipped with analog input/output channels, digital input/output channels, CAN bus channels, USB channels, etc., collects and analyzes all test transmission signals, and transmits them to The data is displayed on 6 and stored, and the instrument is compact, small and flexible. The DEWE-43A data collector is connected to the signal output end of the air pressure sensor 21 through the analog channel 22 , connected to the signal output end of the GPS collector 31 through the CAN channel 32 , and connected to the data display 6 through the USB channel 5 .

In practical application, this embodiment is not limited to the data acquisition and signal analyzer DEWE-43A. For example, the test system based on GPS signal, the non-contact speed measurement of photoelectric principle and the multi-extended analog channel and digital channel signal test system can all be applied here.

The data display 6 uses a Microsoft Surface tablet computer, which has the characteristics of strong battery life, small size, easy to carry, and simple and fast operation. The Surface tablet computer is connected with the data calculator 4 through the USB bus serial interface. The professional DEWESOFT X post-processing software installed on the tablet computer processes the signal sent by the data calculator 4 in real time, which belongs to conventional means.

Embodiment 1: Turn on the first control switch 23 and turn on the second control switch 33. At this time, the semi-trailer braking performance road test system can perform the braking test of the semi-trailer. The test vehicle is tested according to the test method and test specified in the standard GB12676 According to the regulations, when the vehicle is at a specified speed, adjust the manual flow control valve 12 to an appropriate position, operate the shuttle valve 1, and brake the semi-trailer alone to stop. During this period, the data calculator 4 collects the air pressure data sent by the air pressure sensor 21 and GPS. The vehicle speed signal sent by the device 31 is integrated and comprehensively calculated, and the results of the braking test, such as braking speed, braking distance, braking deceleration, braking pipeline pressure and changes in the air pressure of the air tank, are transmitted to the data display 6 Store and read analysis on it.

Embodiment 2: disconnect the first control switch 23, connect the second control switch 33, the driver drives the vehicle to test according to GB/T12543 "Automobile Acceleration Performance Test Method", at this time, the GPS collector 31 sends the vehicle speed signal to the data calculation 4, the measured values such as speed and time are displayed on the data display 6, and the power performance test of the automobile train is completed. In the case of this implementation, it is also possible to expand the road test of vehicle sliding (GB/T 12536) performance, maximum speed (GB/T 12536) performance and steep slope climbing (GB/T 12539) performance.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (5)

1. a kind of semitrailer air-pressure brake performance actual road test system, characterized by comprising:

Manual control braking trigger module, including shuttle valve (1), air gauge (11), pneumatic flow hand control valve (12), two of shuttle valve (1) Air inlet is respectively used to the control piper and gas receiver of connection tractor, and the gas outlet of shuttle valve (1) is used for and air gauge (11) Air inlet connection, the gas outlet of air gauge (11) with the air inlet of pneumatic flow hand control valve (12) for connecting, pneumatic flow hand The gas outlet of control valve (12) is connected for being series in control piper with semitrailer；

Data acquisition module, including baroceptor (21) and GPS gathers device (31) are respectively used to the air pressure letter of acquisition semitrailer Number and speed signal；

Data operator (4), connect with data acquisition module block signal, receives air pressure signal and speed signal and is calculated；

Data display equipment (6) is connect with data operator (4) signal, is shown for data.

2. a kind of semitrailer air-pressure brake performance actual road test system according to claim 1, it is characterised in that: the number The first control switch is equipped with according to the data channel that arithmetic unit (4) is connect with the signal output end of the baroceptor (21) (23), the data channel that the data operator (4) connect with the signal output end of the GPS gathers device (31) is equipped with second Control switch (33).

3. a kind of semitrailer air-pressure brake performance actual road test system according to claim 1 or 2, it is characterised in that: institute It states data operator (4) and selects DEWE-43A data collector, pass through the letter of analog channel (22) connection baroceptor (21) Number output end connects the signal output end of the GPS gathers device (31) by the channel CAN (32), passes through the channel USB (5) and connects Data display equipment (6).

4. a kind of semitrailer air-pressure brake performance actual road test system according to claim 1, it is characterised in that: the number It is tablet computer according to display (6).

5. a kind of semitrailer air-pressure brake performance actual road test system according to claim 1, it is characterised in that: test When, the data operator (4) and data display equipment (6) are fixed on facia board top, and baroceptor (21) is fixed On gas receiver and brake chamber, the GPS antenna receiver of the GPS gathers device (31) is fixed on vehicle roof.