Testing device for auxiliary control box of brake system

Abstract

The utility model discloses a testing device for an auxiliary control box of a brake system. The testing device comprises a control module, an industrial personal computer, a testing pressure control module, a pressure sensor and a valve module, the control module is connected with the industrial personal computer, the pressure sensor, the valve module and the auxiliary control box; the test pressure control module is connected with the valve module; the pressure sensor is connected with the valve module; the auxiliary control box is connected with the valve module and the pressure sensor. Compared with the prior art, the off-line testing device has the advantages that off-line testing is carried out on the auxiliary control box through the control module and the industrial personal computer, loading testing is not needed, complexity of manual operation is reduced, operation difficulty of testing is lowered, accurate recording of testing data of the auxiliary control box is achieved through the pressure sensor, and testing efficiency is improved. Manual recording of test data is not needed.

Description

TECHNICAL FIELD

[0001] The utility model relates to technical field especially relates to a kind of for brake system auxiliary control box testing device. BACKGROUND

[0002] Brake system auxiliary control box is the key component in brake system, mainly for controlling and managing the pressure, flow and direction in gas circuit, to ensure the normal operation of brake system.

[0003] To ensure the normal operation of auxiliary control box, its maintenance and test need to follow the following procedures: remove the components on the gas circuit board, clean and check the gas circuit board, require cleanliness to reach grade III, require no damage, no foreign matter in gas circuit;Update the sealing element between the interface of component and gas circuit board, spring washer, require correct installation, good lubrication of sealing rubber element;Clean and detect check valve, pressure reducing valve, two-way check valve, double-pulse solenoid valve, overflow valve, filter and pressure measuring point, require cleanliness to reach grade III, component no damage, good function;Clean and detect pressure switch, plug, require cleanliness to reach grade III, component no damage, good function;Clean and check box cover rubber pad and rubber sealing strip, and evenly spray rubber protective agent, require sealing strip to be in good condition;Clean and check auxiliary control module air cylinder, air cylinder sling and pipeline, require cleanliness to reach grade V, component no damage, no leakage, assemble and test auxiliary control box, require good function, therefore, when testing auxiliary control box, each component in auxiliary control box needs to be cleaned and tested one by one.

[0004] However, when repairing auxiliary control box at present, due to lack of special test equipment, offline test cannot be carried out, only auxiliary control box after repair can be tested by loading, and the debugging time is as long as 3 hours, which leads to low test efficiency;In addition, if auxiliary control box is found to have fault again during loading test, it needs to be repeatedly disassembled and assembled, which not only increases repair time, but also further affects test efficiency. UTILITY MODEL CONTENTS

[0005] In order to overcome the deficiencies of the prior art, the utility model aims at providing a kind of for brake system auxiliary control box testing device, which can carry out offline test to auxiliary control box after repair, without loading test, to improve test efficiency.

[0006] In order to solve the above technical problems, the utility model is realized according to the following scheme:

[0007] A kind of for brake system auxiliary control box testing device is provided, comprising: control module, industrial computer, test pressure control module, pressure sensor and valve module;

[0008] The control module is connected with the industrial computer, the pressure sensor, the valve module and the auxiliary control box; the test pressure control module is connected with the valve module; the pressure sensor is connected with the valve module; and the auxiliary control box is connected with the valve module and the pressure sensor.

[0009] Compared with the prior art, the test device for the auxiliary control box of the brake system has the following advantages: the auxiliary control box is tested offline by the control module and the industrial computer, so that the vehicle test is not needed, the complicated manual operation is reduced, the operation difficulty of the test is reduced, and the test data of the auxiliary control box is accurately recorded by the pressure sensor without manual recording.

[0010] Optionally, the test pressure control module comprises a pressure reducing valve and a plug valve.

[0011] The plug valve is connected with the valve module through the pressure reducing valve.

[0012] Optionally, the valve module comprises a proportional valve, a three-position five-way valve and a two-position two-way valve.

[0013] The pressure reducing valve is connected with the three-position five-way valve through the proportional valve; the three-position five-way valve is connected with the two-position two-way valve and the pressure sensor; and the two-position two-way valve is connected with the pressure sensor and the auxiliary control box.

[0014] Optionally, the model of the pressure sensor is Xingyi YYZ11A.

[0015] Optionally, the model of the proportional valve is ITV2050-042L. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the overall block diagram of the utility model;

[0017] Figure 2 It is the working principle diagram of the utility model.

[0018] The reference signs are explained as follows: 1, control module; 2, industrial computer; 3, test pressure control module; 4, pressure sensor; 5, valve module; 6, auxiliary control box. DETAILED DESCRIPTION

[0019] The preferred embodiments of the utility model are described below in combination with the drawings, and it should be understood that the preferred embodiments described herein are only used for describing and explaining the utility model, and are not used for limiting the utility model.

[0020] The following description refers to the accompanying drawings. Unless otherwise noted, like elements in different drawings have the same or similar reference numerals. The following description of illustrative embodiments is not meant to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present application as detailed in the appended claims. In the description of the present application, it is to be understood that the terms "first", "second", "third", etc. are used merely as labels, and do not necessarily indicate a particular order or sequence, nor are they intended to indicate or imply relative importance of an item described. The specific meaning of the above terms can be understood from the specific context in which they are used, to those of ordinary skill in the art.

[0021] Referring to Figures 1-2 As shown in the drawings, the utility model provides a kind of for brake system auxiliary control box testing device, comprising: control module 1, industrial computer 2, test pressure control module 3, pressure sensor 4 and valve module 5;Control module 1 is connected with industrial computer 2, pressure sensor 4, valve module 5, auxiliary control box 6;Test pressure control module 3 is connected with valve module 5;Pressure sensor 4 is connected with valve module 5;Auxiliary control box 6 is connected with valve module 5, pressure sensor 4.

[0022] Among them, test pressure control module 3 includes pressure reducing valve JY and plug door SM;Plug door SM is connected with valve module 5 by pressure reducing valve JY;Valve module 5 includes proportional valve A1, A2, three-position five-way valve B1, B2 and two-position two-way valve D1-D7;Pressure reducing valve JY is connected three-position five-way valve by proportional valve, i. e. pressure reducing valve JY is connected three-position five-way valve B1 by proportional valve A1, or pressure reducing valve JY is connected three-position five-way valve B2 by proportional valve A2;Three-position five-way valve is connected two-position two-way valve, pressure sensor 4, i. e. three-position five-way valve B1 is connected two-position two-way valve D4, D5, pressure sensor C3;Two-position two-way valve D1-D5 is connected pressure sensor C1, C3, C4, auxiliary control box 6;The model of pressure sensor 4 (C1-C5) is star YYZ11A;The model of proportional valve A1, A2 is ITV2050-042L.

[0023] Testing device also includes quick coupling for being connected with auxiliary control box 6 and hose, testing device is connected with the air hole Q1, Q2, Q3, Q4, Q5, Q6 of auxiliary control box 6 by quick coupling, hose and is connected with the electrical component of auxiliary control box 6 by navigation plug, and corresponding control pressure (test data) is monitored and recorded using pressure sensor 4, and is sent to industrial computer 2 simultaneously, so that test personnel views test data through industrial computer 2.

[0024] The control module 1 and the industrial computer 2 in the test device are used to test the auxiliary control box 6 offline, without the need of loading test, and the test operation difficulty is reduced, and the test data of the auxiliary control box 6 is accurately recorded by the pressure sensor 4, without manual recording of the test data.

[0025] The test process of the auxiliary control box 6 using the test device will be described in detail below. Figure 2 The test process of the auxiliary control box 6 using the test device will be described in detail below.

[0026] After the auxiliary control box 6 is connected with the test device, the throttle hole, overflow valve, air path, air tightness, plug valve, one-way valve, double pulse valve, double check valve, pulse valve and pressure switch of the auxiliary control box 6 are tested.

[0027] The test process of the throttle hole B7.06 and the overflow valve B7L1 of the auxiliary control box 6 is as follows:

[0028] The test personnel manually press the double pulse valve B7.07 relief button, at this time, the two-position two-way valves D2, D3 and D5 are in the on state, the control module 1 controls the right side of the three-position five-way valve B1 to be powered, the left side of the three-position five-way valve B2 to be powered, and the test personnel observes the pressure changes (pressure values) measured by the pressure sensors C1, C2, C4 and C5 through the industrial computer 2.

[0029] When the pressure rising speed of the pressure sensor C4 is slower than that of the pressure sensor C1, the pressure sensors C2 and C5 should have no pressure before the pressure of the pressure sensor C1 rises to 630kPa, otherwise the throttle hole B7.06 is faulty.

[0030] When the pressure of the pressure sensor C1 is greater than 650±20kPa, the pressure of the pressure sensors C2 and C5 begins to rise, and the pressure value of the pressure sensor C1 at the beginning of the rise is recorded; that is, when the pressure value of the pressure sensor C1 rises to 670kPa, the pressure sensors C2 and C5 must have pressure, otherwise the overflow valve B7L1 is faulty.

[0031] The test process of the test points B7.09, B7.12, B7.13 and B7L3 of the auxiliary control box 6 is as follows:

[0032] When the pressure of the pressure sensor C2 rises to 900kPa, the test personnel manually press the test points B7.09, B7.12, B7.13 and B7L3 respectively, and when the test points B7.09, B7.12, B7.13 and B7L3 have air discharged, it is proved that the test points B7.09, B7.12, B7.13 and B7L3 are normal, otherwise it is judged that the test points B7.09, B7.12, B7.13 and B7L3 are faulty.

[0033] Test process of B7.05, B7L2 and overall air tightness of auxiliary control box 6:

[0034] Stop operation of auxiliary control box 6, when 120 seconds after the stop operation, at this time the pressure of auxiliary control box 6 is balanced, the pressure value of pressure sensor C4 should be 600±10kPa, if not in the range, it is judged that B7.05 is faulty.

[0035] When the pressure of auxiliary control box 6 is balanced, the pressure value of pressure sensor C5 should be 630±10kPa, if not in the range, it is judged that B7L2 is faulty.

[0036] Control module 1 controls two-position two-way valves D2, D3, D5 to be cut off, makes three-position five-way valve B1 right side coil lose power to be in intermediate position, records the pressure value of pressure sensor C1 at this time, after 60 seconds, records the pressure value of pressure sensor C1, and compares with the pressure value 60 seconds ago, the pressure drop (pressure drop before and after 60 seconds) of pressure sensor C1 cannot be lower than 5kPa, otherwise it is judged that the overall air tightness of auxiliary control box 6 is unqualified.

[0037] Test process of plug valves B7B11, B7B04, B7L06 of auxiliary control box 6:

[0038] Control module 1 controls three-position five-way valve B2 left side coil to lose power to be in intermediate position, two-position two-way valves D1, D2, D3, D5 are in on state, plug valves B7B11, B7B04, B7L06 are in cut-off state, at this time the pressure values of pressure sensors C4, C3, C5 should be 0.

[0039] If pressure sensor C4 is not 0, it is judged that plug valve B7B11 is faulty; if pressure sensor C3 is not 0, it is judged that plug valve B7B04 is faulty; if pressure sensor C5 is not 0, it is judged that plug valve B7L06 is faulty; after restoring plug valves B7B11, B7B04, B7L06, control module 1 controls two-position two-way valve D1 to be cut off, and three-position five-way valve B2 left side coil gets power.

[0040] Test process of one-way valves B7.02, B7.03, double pulse valve B7.07 of auxiliary control box 6:

[0041] Control module 1 controls double pulse valve B7.07 coil to get power for 3 seconds and then to lose power, after waiting for 20 seconds, the pressure value measured by pressure sensor C4 should be reduced to 0, otherwise it is judged that double pulse valve B7.07 is faulty.

[0042] When the pressure value measured by pressure sensor C2 is greater than 650kPa, control module 1 controls three-position five-way valve B1 left side coil to get power, at this time the pressure value measured by pressure sensor C1 should be reduced to 0, otherwise it is judged that one-way valve B7.02 is faulty.

[0043] The control module 1 controls the two-position two-way valve D7 to be in the on state, so that the pressure values measured by the pressure sensors C2 and C5 are reduced to 0; the control module 1 controls the two-position two-way valve D7 to be in the off state, the control module 1 controls the proportional valve A2 to output a pressure of 900 kPa, and controls the right side of the three-position five-way valve B2 to be energized, and when the pressure sensor C3 is greater than 590 kPa, the double pulse valve B7.07 relief coil is energized for 3 seconds and then disconnected, and when the pressure sensor C4 is greater than 10 kPa, the double pulse valve B7.07 relief function is normal, otherwise it is judged that the double pulse valve B7.07 relief function is faulty.

[0044] When the pressure values measured by the pressure sensors C2, C5 and C1 are all 0, the one-way valve B7.03 is normal, otherwise it is judged that the one-way valve B7.03 is faulty.

[0045] The control module 1 controls the left side of the three-position five-way valve B2 to be energized, and the pressure value C3 measured by the pressure sensor 4 should be reduced to 0, the control module 1 controls the right side of the three-position five-way valve B2 to be de-energized and in the middle position, and restores the two-position two-way valve D1 to be in the off state.

[0046] The test process of the two-way check valve B7.08 of the auxiliary control box 6 is as follows:

[0047] The control module 1 controls the three-position five-way valve B1 to be energized, and when the pressure sensor C1 is greater than 700 kPa, the control module 1 controls the double pulse valve B7.07 relief coil to be energized for 3 seconds and then disconnected, and when the pressure measured by the pressure sensor C4 is recorded 120 seconds after the pressure measured by the pressure sensor C4 rises to 590 kPa; the control module 1 controls the output pressure of the proportional valve A2 to be equal to the pressure measured by the pressure sensor C4 (+60 kPa) and then outputs, and controls the right side of the three-position five-way valve B2 to be energized, waits for 10 seconds, and then reads the pressure values measured by the pressure sensors C3 and C4; when the difference between the pressure value measured by the pressure sensor C4 and the pressure value measured by the pressure sensor C3 is not greater than 5 kPa, the two-way check valve B7.08 is normal, otherwise it is judged that the two-way check valve B7.08 is faulty; the control module 1 controls the right side of the three-position five-way valve B2 to be de-energized and the left side to be energized, at this time the pressure value measured by the pressure sensor C3 should be reduced to 0.

[0048] The test process of the manual function of the double pulse valve B7.07 of the auxiliary control box 6 is as follows:

[0049] The tester manually presses the double pulse valve B7.07 to apply the parking brake, at which time the pressure value measured by the pressure sensor C4 should be reduced to 0, otherwise it is judged that the double pulse valve B7.07 manual application function fails; the tester manually presses the double pulse valve B7.07 to release the parking brake, at which time the pressure value measured by the pressure sensor C4 should be greater than 480 kPa, otherwise it is judged that the double pulse valve B7.07 manual release function fails.

[0050] The test process of the pressure switch B7.10, B7.14 function of the auxiliary control box 6:

[0051] The control module 1 controls the left coil of the three-position five-way valve B1 to be powered on, so that the pressure value measured by the pressure sensor C1 is reduced to 0, and controls the two-position two-way valves D1, D2 and D6 to be turned on, so that the pressure values measured by the pressure sensors C3 and C4 are reduced to 0. The control module 1 controls the two-position two-way valves D1, D5 and D6 to be in the cut-off state, the two-position two-way valve D4 to be in the on state, and the right inflation coil of the three-position five-way valve B1 to be powered on. When the pressure measured by the pressure sensor C4 rises to about 480 kPa, control the pressure switch B7.10 to act, record the pressure value at the time of action, at this time the pressure value should be 480±10 kPa, otherwise it is judged that the pressure switch B7.10 is unqualified.

[0052] When the pressure measured by the pressure sensor C1 rises to about 700 kPa, control the pressure switch B7.14 to act, record the pressure value at the time of action, at this time the pressure value should be 700±20 kPa, otherwise it is judged that the pressure switch B7.14 is unqualified.

[0053] The control module 1 controls the left coil of the three-position five-way valve B1 to be powered on, so that its slow exhaust, when the pressure measured by the pressure sensor C1 drops to about 500 kPa, control the pressure switch B7.14 to act, record the pressure value at the time of action, at this time it should be 500±10 kPa, otherwise it is judged that the pressure switch B7.14 is unqualified.

[0054] The control two-position two-way valve D6 is in the on state, so that the pressure measured by the pressure sensor C4 slowly decreases, when it decreases to about 380 kPa, control the pressure switch B7.10 to act, record the pressure value at the time of action, at this time it should be 380±10 kPa, otherwise it is judged that the pressure switch B7.10 is unqualified.

[0055] The above is only a preferred embodiment of the present application, and is not used to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A brake system auxiliary control box testing device, characterized by, The utility model relates to a kind of test pressure control system, including: Control module, industrial computer, test pressure control module, pressure sensor and valve module; The control module is connected with the industrial computer, the pressure sensor, the valve module, auxiliary control box;The test pressure control module is connected with the valve module;The pressure sensor is connected with the valve module;The auxiliary control box is connected with the valve module, the pressure sensor.

2. A device for testing an auxiliary control box of a brake system according to claim 1, characterized in that The test pressure control module includes pressure reducing valve and plug door; The plug door is connected with the valve module by the pressure reducing valve.

3. A test device for a brake system auxiliary control box according to claim 2, characterized in that, The valve module includes proportional valve, three-position five-way valve and two-position two-way valve; The pressure reducing valve is connected with the three-position five-way valve by the proportional valve;The three-position five-way valve is connected with the two-position two-way valve, the pressure sensor;The two-position two-way valve is connected with the pressure sensor, the auxiliary control box.

4. A test device for a brake system auxiliary control box according to claim 1, characterized in that, The model of the pressure sensor is Xingyi YYZ11A.

5. A test device for a brake system auxiliary control box according to claim 3, characterized in that, The model of the proportional valve is ITV2050-042L.

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