CN102175470A - System for testing vibration attenuation of suspension of rail vehicle - Google Patents

Abstract

The invention relates to a rail vehicle suspension vibration attenuation test system, which belongs to rail vehicle parameter detection equipment. The system is designed to meet the needs of testing the vibration attenuation characteristics of rail vehicles. It consists of a mobile quick drop release lifting device, CRH EMU, drop test ground and track devices and a test system. The mobile quick drop release lifting device includes: drop arm assembly, jack, manual oil pump and mobile car ;CRH EMU includes CRH EMU car body, windshield and bogie assembly; drop test ground and track device is mainly composed of drop test ground and drop test rail; The displacement detection system composed of the fixed steel plate of the table seat and the acceleration detection system composed of the acceleration sensor.

Description

A rail vehicle suspension vibration attenuation test system

technical field

The invention relates to rail vehicle parameter detection equipment, in particular to a rail vehicle suspension vibration attenuation test system.

Background technique

Suspension is the general term for all force transmission coupling devices between the frame and the wheels. The function of the suspension is to transmit the various forces that the track acts on the wheels and the moments generated to the frame, absorbing and easing the impact and vibration transmitted to the frame due to wheel jumps caused by uneven road surfaces during driving. Suspension is one of the important components of the bogie. It must have good damping characteristics to ease the interaction between the vehicle and the line, reduce vibration and shock, and improve the stability, safety and reliability of the vehicle. The vibration attenuation characteristics of the rail vehicle suspension will also directly affect the vehicle handling stability and ride comfort. Therefore, the suspension vibration attenuation performance testing must be carried out regularly on the vehicles in use to ensure that the performance of the main components of the suspension system meets the requirements of the vehicle. requirements.

The main test method for vehicle suspension vibration attenuation test is indoor simulation test. There are two kinds of indoor vehicle vibration simulation test benches: electromagnetic type and electro-hydraulic type. Among them, the electro-hydraulic servo test bench has better performance. This kind of test bench can simulate the road spectrum of the complex vehicle operating environment through closed-loop control. The test bench continuously excites the vehicle through the hydraulic cylinder, and stops when the vibration of the vehicle reaches a certain level. Vibration, measuring the displacement or acceleration attenuation characteristics of the vehicle to evaluate the quality of the vehicle suspension, this test result is closer to the actual situation, but this kind of test bench has high cost, complex structure, and needs special manufacturing. At present, almost all of them are imported in China. Such products abroad.

Contents of the invention

The object of the present invention is to overcome the shortcoming of above-mentioned test method, develop a kind of novel device that can test the vibration attenuation performance of rail vehicle suspension rapidly, conveniently and reliably. The mobile quick drop release car lifting device does not need to continuously excite the tested vehicle, it only needs to lift the rail vehicle and make it fall quickly, and the energy consumed is far less than that of the electro-hydraulic vibration table, which greatly reduces the test time. cost.

The structure of the mobile quick drop release car lifting device is simple, the construction cost is low, the safety is good, the reliability is high, and the control operation is convenient. The mobile quick drop release car lifting device can move freely in non-working state, is convenient for storage, has broad application prospects, and has good social and economic benefits.

The above object of the present invention is achieved through the following technical solutions, which are described below in conjunction with the accompanying drawings.

A rail vehicle suspension vibration attenuation test system, which is composed of a mobile quick drop release car lifting device A, a CRH EMU B, a drop test ground and track device C, and a test system D. The mobile quick drop release car lift There are four sets of device A, and each set of mobile quick drop release car lifting device A includes: drop arm assembly a, jack b, manual oil pump c and mobile car d, drop arm assembly a is placed on jack b, jack b b is connected with the manual oil pump c through the jack oil pipe, the jack b is fixed on the jack installation base plate of the mobile vehicle d through bolts, and the mobile vehicle d moves freely on the drop test ground and the track device C.

The drop arm assembly a in the mobile quick drop release car lifting device A is mainly composed of a support 5, a drop arm upper pin shaft 6, a drop arm upper arm 7, a drop arm half shaft 8, a drop arm lower arm 9, a drop arm The arm support seat 10, the electromagnet mounting seat 11, the electromagnet 12, the cam 13, the drop arm guide rod 14, the buffer rubber 15 and the drop arm guide sleeve 16 are composed, and the bottom of the drop arm support seat 10 is installed on the top surface of the jack b, And be connected with the side of electromagnet mounting base 11 by bolt, electromagnet 12 bottoms are fixed on the electromagnet mounting base 11 by bolt, the traction iron core in electromagnet 12 is connected with cam 13 through pin shaft, and cam 13 is installed on the electromagnet. On the iron mounting base 11, the lower arm 9 of the drop arm is connected to the upper arm 7 of the drop arm and the support seat 10 of the drop arm respectively through the half shaft 8 of the drop arm, and the upper arm 7 of the drop arm is connected to the support 5 through the upper pin shaft 6 of the drop arm. The guide rod 14 is installed in the inner cavity of the drop arm support seat 10 through the drop arm guide sleeve 16, and the upper part of the drop arm guide rod 14 is placed in the opening of the support 5, and is connected with the support 5 by fastening bolts, and the drop The arm guide rod 14 is slidingly matched with the drop arm guide sleeve 16, and the buffer rubber 15 is sleeved on the drop arm guide rod 14 and placed on the top of the drop arm support seat 10.

The mobile car d in the mobile quick drop release car lifting device A is mainly composed of a mobile frame 17, a wheel assembly 18 and a jack installation base plate 19, and the jack b is fixed on the jack installation base plate 19 of the mobile car d by bolts , The jack mounting base plate 19 is fixed on the mobile frame 17 by bolts, and the wheel assembly 18 is installed on the mobile frame 17.

The CRH EMU B is composed of a CRH EMU car body e, a glass shield f and a bogie assembly g, and the CRH EMU B is placed on the drop test ground and the track device C.

The drop test ground and track device C is composed of a drop test ground h and a drop test rail i, and the drop test rail i is fixed on the drop test ground h.

Described test system D comprises the displacement detection system k that is made up of pull-wire displacement encoder 1, magnetic table base 2, magnetic table base fixed steel plate 3 and the acceleration detection system m that is made up of acceleration sensor 4, described pull-wire displacement The encoder 1 is fixed on the magnetic table base 2, and the magnetic table base 2 is firmly connected with the fixed steel plate 3 of the magnetic table base. The acceleration sensor 4 is fixed on the car body of the CRH EMU through threads, and is used to detect the acceleration of vehicle vibration. .

The displacement signal and the acceleration signal detected by the test system D are conditioned and entered into the A/D of the data acquisition card respectively; the computer obtains the required rail vehicle suspension vibration attenuation characteristic curve through data processing.

The technical effect of the present invention: the system overcomes the shortcomings of the traditional suspension vibration system, adopts a compact and reasonable structural design method, can quickly and conveniently test the vibration attenuation of the rail vehicle suspension, and also has the advantages of simple operation and rapid positioning , easy maintenance, reliable performance and so on. The application prospect of the system is very broad, and it has good social and economic benefits.

Description of drawings

Fig. 1 Schematic diagram of the rail vehicle suspension vibration attenuation test system.

Figure 2 Front view of the rail vehicle suspension vibration attenuation test system.

Fig. 3 Partial enlarged schematic diagram of the rail vehicle suspension vibration attenuation test system.

Figure 4 is a schematic diagram of the mobile quick drop release car lifting device.

Fig. 5 The view of the lifting state (enlarged part of the right side) of the mobile quick drop release car lift.

Figure 6 The view of the falling state (enlarged right part) of the mobile quick drop release car lift.

Fig. 7 Schematic diagram of CRH EMU.

Figure 8 Schematic diagram of the ground and track device for the drop test.

Figure 9 Test system.

Figure 10 Displacement detection system.

Figure 11 Acceleration sensor.

Fig. 12 a), b) Schematic diagram of the lifting process of the mobile quick drop release car lifting device.

Fig. 13 a), b) Schematic diagram of the falling process of the mobile quick drop release car lifting device.

Figure 14 Schematic diagram of the drop arm assembly.

Figure 15 Sectional view 1 of the drop arm assembly.

Figure 16b) is a sectional view 2 of the drop arm assembly.

Fig. 16a) is a sectional view along the line A-A of Fig. 16b).

Figure 17a) is a schematic diagram of the guiding mechanism.

Figure 17b) is a perspective view of the guide mechanism

Figure 18 a), b) are schematic diagrams of the drop process of the drop arm assembly.

Figure 19 a), b) are schematic diagrams of the mobile vehicle.

In the picture: A-quick drop release car lifting device B-CRH EMU C-drop test ground and track device D-test system

a-drop arm assembly b-jack c-manual oil pump d-mobile car e-CRH train body f-windshield g-bogie assembly h-drop test ground i-drop test rail k-displacement detection system m-acceleration detection system

1-pull wire encoder 2-magnetic table base 3-magnetic table base fixed steel plate 4-acceleration sensor 5-support 6-drop arm upper pin 7-drop arm upper arm 8-drop arm half shaft 9-drop arm lower arm 10 -Drop arm support seat 11-Electromagnet mounting seat 12-Electromagnet 13-Cam 14-Drop arm guide rod 15-Buffer rubber 16-Drop arm guide sleeve 17-Mobile frame 18-Wheel assembly 19-Jack installation base plate

Detailed ways

With reference to Fig. 1, 2, the present invention relates to a kind of railway vehicle suspension vibration attenuation test system, its function is to test the rail vehicle suspension vibration attenuation, it is mainly composed of mobile fast drop car lifting device A, CRH EMU B, Drop test ground and track assembly C and test system composition D. The rail vehicle suspension vibration attenuation test system includes four sets of mobile quick drop and release car lifting devices A. When in working condition, the four sets of mobile quick drop and release car lifting devices A are lifted at the same time to make the CRH EMU B rise and escape from the fall Test the ground and track device C and release it quickly, while the test system D tests the vibration attenuation characteristics of the rail vehicle suspension. When not in operation, the mobile quick drop release lift can move freely on the drop test floor and track set.

Referring to Figures 3 and 4, the mobile quick drop and release car lifting device A is mainly composed of a drop arm assembly a, a jack b, a manual oil pump c and a mobile car d. The drop arm assembly a is placed on the jack b, the jack b is connected with the manual oil pump c through the jack oil pipe, the jack b is fixed on the jack installation base plate of the mobile car d by bolts, and the mobile car d can be installed on the drop test ground and the track Free movement on C.

Referring to Fig. 5, the mobile quick drop and release lifting device A is installed on both sides of the bogie of the CRH EMU B. The piston moves upwards, the drop arm assembly a is installed on the upper end of the piston of the jack a and moves upwards accordingly, and then pushes the car body of the CRH EMU B to move upwards, and the suspension of the rail vehicle is in a stretched state.

Referring to Fig. 6, the iron core in the electromagnet in the mobile rapid drop release lifting device A moves downward so that the drop arm assembly a falls rapidly, and the CRH EMU B loses support and quickly falls under the action of its own gravity. Drop, Test System D tests the damping characteristics of rail vehicle suspension vibrations.

Referring to Fig. 7, the CRH EMU B is mainly composed of a CRH EMU car body e, a windshield d and a bogie assembly g.

Referring to Fig. 8, the drop test ground and track device C is mainly composed of a drop test ground h and a drop test rail i, and the drop test rail i is fixed on the drop test ground h.

Referring to Figures 9, 10, and 11, the test system D mainly includes a displacement detection system k and an acceleration detection system m, wherein the displacement detection system k mainly includes a pull-wire displacement encoder 1, a magnetic table base 2 and a fixed steel plate for the magnetic table base 3. The pull-wire displacement encoder 1 is fixed on the magnetic base 2, and the magnetic base 2 is firmly connected with the fixed steel plate 3 of the magnetic base. The acceleration detection system m mainly includes an acceleration sensor 4, which is fixed on the CRH EMU car body through threads to detect the acceleration of vehicle vibration. The displacement signal and acceleration signal detected by the test system D are conditioned and sent to the A/D of the data acquisition card; the computer obtains the required rail vehicle suspension vibration attenuation characteristic curve through data processing.

Referring to Figures 12 and 13, the mobile quick drop and release car lifting device A is mainly composed of a drop arm assembly a, a jack b, a manual oil pump c and a mobile car d. The drop arm assembly a is installed on the upper surface of the jack b, and the jack b is fixed on the jack installation base plate of the mobile vehicle d through bolts, and the joint nuts at both ends of the oil pipe connect the jack b with the manual oil pump c. When in use, install four sets of mobile quick drop and release car lifting devices A on both sides of the bogie of CRH EMU B. After installation and adjustment, make the drop arm assembly a in the lifting state, and tilt the handle of the manual oil pump c up and down. The hydraulic oil is pressed into the jack b to make the piston rod rise steadily, the drop arm assembly a moves upward together with the piston of the jack b and supports the rail vehicle body, the rail vehicle suspension is in a stretched state, and the start electromagnet makes the drop arm Assembly a fell rapidly, and CRH EMU B lost its support and fell rapidly. When not in use, the manual oil pump c can be put into the tool box of the mobile car d, and the mobile car d can carry the mobile quick drop release car lifting device A to move freely.

Referring to Figures 14, 15, and 16, the drop arm assembly a is mainly composed of a support 5, an upper pin shaft 6 of the drop arm, an upper arm 7 of the drop arm, a half shaft of the drop arm 8, a lower arm 9 of the drop arm, and a supporting seat of the drop arm 10, electromagnet mounting seat 11, electromagnet 12, cam 13, drop arm guide rod 14, buffer rubber 15 and drop arm guide sleeve 16 form. The bottom of the drop arm supporting seat 10 is installed on the top surface of the jack b, and is connected to the side of the electromagnet mounting seat 11 by bolts, the bottom end of the electromagnet 12 is fixed on the electromagnet mounting seat 11 by bolts, and the pin shaft connects the electromagnet 12 The traction core in the electromagnet 12 links to each other with the cam 13, and the cam 13 is installed on the electromagnet mount 11, and the traction core in the electromagnet 12 can drive the cam 13 to rotate around the axis when the traction core in the electromagnet 12 moves downward. The lower arm 9 of the drop arm is connected to the upper arm 7 of the drop arm and the support seat 10 of the drop arm respectively through the half shaft 8 of the drop arm, the upper arm 7 of the drop arm is connected to the support 5 through the upper pin shaft 6 of the drop arm, and the guide rod 14 of the drop arm is placed on the support In the opening of the seat 5, the fastening bolt connects the drop arm guide rod 14 and the support 5 as a whole, and can guide the support 5 to move vertically. Slide up and down in the direction, the drop arm guide sleeve 16 is installed in the inner cavity of the drop arm support seat 10, and the buffer rubber 15 is installed on the top of the drop arm support seat 10, and the support 5 can play a buffering role when falling quickly to reduce the impact.

15 and 17, the drop arm guide rod 14 is placed in the opening of the support 5, and the fastening bolt connects the drop arm guide rod 14 and the support 5 to guide the vertical movement of the support 5.

Referring to Fig. 18, when the mobile quick-drop release lifter A is in the lifting state, the upper end of the support 5 is in surface-to-face contact with the lower end of the CRH EMU car body, and the rail vehicle suspension is in a stretched state. The traction iron core in the electromagnet 12 moves downward, thereby driving the cam 13 to rotate around the axis, and the outer edge of the cam 13 pushes the lower arm 9 of the drop arm to rotate counterclockwise, thereby driving the upper arm 7 of the drop arm to rotate clockwise and vertically The upper arm 7 of the drop arm drives the support 5 to move downward through the upper pin shaft 6 of the drop arm at the same time. When the hammer line is outside the falling arm assembly a falls rapidly, the upper surface of the support 5 is separated from the CRH EMU B, and the CRH EMU B loses its support and falls rapidly.

Referring to FIG. 19 , the mobile quick-drop release lifting device A is installed on a mobile vehicle d, wherein the mobile vehicle d is mainly composed of a mobile frame 17 , a wheel assembly 18 and a jack installation base 19 . The jack b is fixed on the jack installation base plate 19 of the mobile vehicle d by bolts, the jack installation base plate 19 is fixed on the mobile frame 18 by bolts, and the mobile vehicle d can be moved by installing the mobile frame 17 on the wheel assembly 18. A quick drop releases the free movement of the lift A.

Claims (7)

1. A rail vehicle suspension vibration attenuation test system is composed of a mobile quick drop release car lifting device (A), a CRH train set (B), a drop test ground and track device (C) and a test system (D), It is characterized in that there are four sets of mobile quick drop and release car lifting devices (A), each set of mobile quick drop and release car lifting devices (A) includes: drop arm assembly (a), jack (b), The manual oil pump (c) and the mobile vehicle (d), the drop arm assembly (a) is placed on the jack (b), the jack (b) is connected with the manual oil pump (c) through the jack oil pipe, and the jack (b) is connected through the bolt Fixed on the jack installation base plate of the mobile vehicle (d), the mobile vehicle (d) can move freely on the drop test ground and the track device (C). 2. rail vehicle suspension vibration attenuation test system according to claim 1, is characterized in that, described mobile quick drop releases the drop arm assembly (a) in the car lifting device (A) mainly by support ( 5), the upper pin shaft of the drop arm (6), the upper arm of the drop arm (7), the half shaft of the drop arm (8), the lower arm of the drop arm (9), the support seat of the drop arm (10), the mounting seat of the electromagnet (11) , electromagnet (12), cam (13), drop arm guide rod (14), buffer rubber (15) and drop arm guide sleeve (16), the bottom of the drop arm support seat (10) is installed on the jack (b) On the top surface, it is connected to the side of the electromagnet mounting seat (11) by bolts, the bottom end of the electromagnet (12) is fixed on the electromagnet mounting seat (11) by bolts, and the traction iron core in the electromagnet (12) passes through The pin shaft is connected with the cam (13), and the cam (13) is installed on the electromagnet mounting seat (11). The support base (10) is connected, the upper arm (7) of the drop arm is connected with the support (5) through the upper pin shaft (6) of the drop arm, and the guide rod (14) of the drop arm is installed on the support of the drop arm through the guide sleeve (16) of the drop arm. In the inner cavity of the seat (10), the upper part of the drop arm guide rod (14) is placed in the opening of the support (5), and is connected with the support (5) by fastening bolts, and the drop arm guide rod (14) Slidingly fit with the drop arm guide sleeve (16), the buffer rubber (15) is sleeved on the drop arm guide rod (14) and placed on the top of the drop arm support seat (10). 3. rail vehicle suspension vibration attenuation test system according to claim 1, is characterized in that, described mobile quick drop releases the mobile car (d) in the car lifting device (A) mainly by mobile vehicle frame (17 ), the wheel assembly (18) and the jack installation base plate (19), the jack (b) is fixed on the jack installation base plate (19) of the mobile vehicle (d) by bolts, and the jack installation base plate (19) is fixed on the mobile vehicle (d) by bolts On the vehicle frame (17), the wheel assembly (18) is installed on the mobile vehicle frame (17). 4. rail vehicle suspension vibration attenuation test system according to claim 1 or 2, is characterized in that, described CRH multiple train set (B) is made of CRH multiple train set car body (e), windshield (f) and steering Frame assembly (g), CRH EMU (B) is placed on the drop test ground and track device (C). 5. rail vehicle suspension vibration attenuation test system according to claim 1, is characterized in that, described drop test ground and track device (C) are made up of drop test ground (h) and drop test rail (i), The drop test rail (i) is fixed on the drop test floor (h). 6. rail vehicle suspension vibration attenuation test system according to claim 1, is characterized in that, described test system (D) comprises by stay wire type displacement encoder (1), magnetic force table base (2), magnetic force table A displacement detection system (k) composed of a fixed steel plate (3) and an acceleration detection system (m) composed of an acceleration sensor (4), the wire-drawn displacement encoder (1) is fixed on the magnetic meter base (2) , the magnetic table base (2) is firmly connected with the magnetic table base fixing steel plate (3), and the acceleration sensor (4) is fixed on the CRH EMU car body through threads to detect the acceleration of vehicle vibration. 7. rail vehicle suspension vibration attenuation test system according to claim 1 or 6, is characterized in that, the displacement signal and the acceleration signal that described test system (D) detects are by conditioning, enter the A of data acquisition card respectively /D; the computer obtains the required rail vehicle suspension vibration attenuation characteristic curve through data processing.

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