CN106353112A - Wheel impact fatigue testing machine for high-speed EMU - Google Patents

Abstract

Translated fromChinese

本发明公开了高速动车组车轮冲击疲劳试验机。目前没有专门针对高速动车组车轮的冲击疲劳试验机。本发明包括垂向夹紧机构、水平夹紧机构、重复冲击机构和工作台；垂向夹紧机构和水平夹紧机构用于夹紧高速动车组车轮，将高速动车组车轮固定在工作台上；重复冲击机构用于提供冲击载荷，将冲击载荷作用于高速动车组车轮。本发明可测试高速动车组车轮在重复冲击载荷作用下的使用寿命，其利用重力加载冲击力，重复冲击时可保证摆锤等高度摆下，确保冲击力、冲击速度的恒定不变，而且可通过调换对应的质量块来实现所需的冲击力，简单方便。

The invention discloses a high-speed EMU wheel impact fatigue testing machine. At present, there is no impact fatigue testing machine specially for high-speed EMU wheels. The invention includes a vertical clamping mechanism, a horizontal clamping mechanism, a repetitive impact mechanism and a workbench; the vertical clamping mechanism and the horizontal clamping mechanism are used to clamp the wheels of the high-speed EMU and fix the wheels of the high-speed EMU on the workbench ; The repeated impact mechanism is used to provide the impact load, and the impact load acts on the wheels of the high-speed EMU. The invention can test the service life of high-speed EMU wheels under repeated impact loads. It uses gravity to load the impact force, and can ensure that the pendulum swings down at the same height during repeated impacts to ensure constant impact force and impact speed. It is simple and convenient to achieve the required impact force by exchanging the corresponding mass block.

Description

EMU wheel impact fatigue testing machine

Technical field

The invention belongs to repeated impact test equipment, more particularly to one kind can carry out repeated impact test is repeated several timesEMU wheel impact fatigue testing machine.

Background technology

Train of high-speed motor train unit in the process of moving, because the reasons such as wheel flat, the low joint of track can make wheel standImpact loading is repeated several times, its impact fatigue characteristic need to be evaluated.At present, also maturation in domestic impact fatigue testing machineProduct, in existing fatigue machine and shock machine, fatigue machine can carry out the fatigue test of conventional test specimen, but noMethod carries out repeated impact test；And shock machine is then mainly used in single-impact test, emphatically the impact toughness of material is enteredRow measures.Although China's high ferro development in the last few years is swift and violent, the test platform related to high ferro is suitable shortage.

Content of the invention

The purpose of the present invention is the shortage for EMU wheel test platform, provides a kind of EMU wheelImpact fatigue testing machine, this testing machine can effectively clamp EMU wheel, using gravitational load, can carry out repeated impactsAnd keep constant impulsive force, and the effective tune to required impulsive force size can be realized by changing different masses of plantingWhole.

The technical solution used in the present invention is:

The present invention includes vertical clamp system, horizontal-clamping mechanism, repeated impacts mechanism and workbench；N horizontal-clampingMechanism is uniformly distributed along the circumference, n >=4；Described vertical clamp system is by installing plate, vertical hydraulic cylinder, adapter sleeve, V-shaped connecting rod, companyFishplate bar, short connecting rod, long connecting rod and hold-down head composition；Described installing plate is fixing on the table；The cylinder of vertical hydraulic cylinderBody is hinged with installing plate, and the piston rod of vertical hydraulic cylinder and adapter sleeve are threaded connection；One of adapter sleeve and V-shaped connecting rodArm top is hinged；Connecting plate welds on a mounting board；One end of the bottom of V-shaped connecting rod and long connecting rod is all cut with scissors with connecting plateConnect；Another arm top of V-shaped connecting rod is hinged with one end of short connecting rod；Cut with scissors in the middle part of the other end of short connecting rod and long connecting rodConnect；The other end of long connecting rod is hinged with hold-down head.

Described horizontal-clamping mechanism is made up of clamp jaw, horizontal hydraulic cylinder and hydraulic cylinder mounting seat；Described clamp jawHead is arcwall face；The afterbody of clamp jaw is threaded connection with the piston rod of horizontal hydraulic cylinder；The cylinder body of horizontal hydraulic cylinder is solidIt is scheduled in hydraulic cylinder mounting seat；Hydraulic cylinder mounting seat is fixed by screws on workbench.

Described repeated impacts mechanism includes bracing frame, motor, small pulley, belt, big belt wheel, bearing spider, rotating shaft, rotationTurning handle, pendulum shaft stool, oscillating weight axle, pendulum bearing, pendulum, slip-off preventing screw, mass and drift；Described bracing frame and electricityMachine is each attached on workbench；Small pulley is affixed with the output shaft of motor, and is connected by belt with big belt wheel；Big belt wheel is affixedIn rotating shaft；Bearing spider is fixed on bracing frame；Described rotating shaft is bearing on bearing spider by bearing；In rotating handleIt is fixed in rotating shaft at the heart；The top of pendulum is bearing on oscillating weight axle by pendulum bearing；Impactor is fixed on pendulum top；Anti-Releasing screw is connected with oscillating weight axle end thread, to pendulum axial limiting；Described oscillating weight axle is fixed on pendulum shaft stool, pendulumHammer shaft stool is fixed on bracing frame；Oscillating weight axle axle center and rotating shaft core distance are set to a, and the length of rotating handle is set to b, oscillating weight axleThe diameter of axle is set to r, and oscillating weight axle axle center and Impactor outer end threshold value are set to c, then b/+r ＜ a ＜ b/+c；Two pieces of masses pass throughStuds is symmetrically mounted on pendulum bottom；Described drift is threaded connection with pendulum bottom.

Described workbench is made up of the worktable support post of workbench flat board and support works platform flat board.

Described vertical hydraulic cylinder, horizontal hydraulic cylinder and motor are by controller control.

The invention has the benefit that

1st, the present invention can test service life under repeated impact effect for the EMU wheel；

2nd, the present invention utilize gravitational load impulsive force, can ensure during repeated impacts pendulum etc. height accommodate it is ensured that impulsive force,Impact velocity invariable；

3rd, the present invention can realize required impulsive force by exchanging corresponding mass, simple and convenient；

4th, the rod member of the present invention reduces the impact to vertical hydraulic cylinder radial direction for the impulsive force, particularly short connecting rod and V-shapedThe comprehensive function of connecting rod, effectively extends the life-span of vertical hydraulic cylinder；

5th, the present invention is with low cost, takes up space little, and dismounting is easily it is easy to keep in repair.

Brief description

Fig. 1 is a side isometric view of the present invention；

Fig. 2 is another side isometric view of the present invention；

Fig. 3 is the axonometric chart of vertical clamp system in the present invention；

Fig. 4 is the schematic diagram of mechanism of vertical clamp system in the present invention；

Fig. 5 is the axonometric chart of horizontal-clamping mechanism in the present invention；

Fig. 6 is the axonometric chart of repeated impacts mechanism in the present invention；

Fig. 7 is the partial enlarged drawing of repeated impacts mechanism in the present invention；

Fig. 8 is the schematic diagram of mechanism of repeated impacts mechanism in the present invention.

In figure: 1, worktable support post, 2, vertical clamp system, 2-1, installing plate, 2-2, vertical hydraulic cylinder, 2-3, connectionSet, 2-4, V-shaped connecting rod, 2-5, connecting plate, 2-6, short connecting rod, 2-7, long connecting rod, 2-8, hold-down head, 3, horizontal-clamping machineStructure, 3-1, clamp jaw, 3-2, horizontal hydraulic cylinder, 3-3, hydraulic cylinder mounting seat, 4, EMU wheel, 5, repeated impacts machineStructure, 5-1, bracing frame, 5-2, motor, 5-3, small pulley, 5-4, belt, 5-5, big belt wheel, 5-6, bearing spider, 5-7, rotating shaft,5-8, rotating handle, 5-9, pendulum shaft stool, 5-10, oscillating weight axle, 5-11, pendulum bearing, 5-12, pendulum, 5-13, slip-off preventing spiral shellNail, 5-14, mass, 5-15, drift, 6, workbench flat board.

Specific embodiment

Below in conjunction with drawings and Examples, the invention will be further described.

As illustrated in fig. 1 and 2, EMU wheel impact fatigue testing machine, by controller, vertical clamp system 2, levelClamp system 3, repeated impacts mechanism 5 and workbench composition；Four horizontal-clamping mechanisms 3 are uniformly distributed along the circumference；Workbench is by workingThe worktable support post 1 of platform flat board 6 and support works platform flat board 6 forms.Controller controls the vertical hydraulic pressure of vertical clamp systemThe horizontal hydraulic cylinder 3-2 action of cylinder 2-2 and horizontal-clamping mechanism, thus clamping or unclamping EMU wheel 4, and controls weightThe motor 5-2 start and stop of multiple beater mechanism 5.

As shown in Figures 3 and 4, vertical clamp system 2 is connected by installing plate 2-1, vertical hydraulic cylinder 2-2, adapter sleeve 2-3, V-shapedBar 2-4, connecting plate 2-5, short connecting rod 2-6, long connecting rod 2-7 and hold-down head 2-8 composition；Installing plate 2-1 is fixed by screwOn workbench flat board 6；The cylinder body of vertical hydraulic cylinder 2-2 is hinged with installing plate 2-1, the piston rod of vertical hydraulic cylinder 2-2 and companyFemale connector 2-3 is threaded connection；Adapter sleeve 2-3 is hinged with an arm top of V-shaped connecting rod 2-4；Connecting plate 2-5 is welded on peaceOn dress plate 2-1；One end of the bottom of V-shaped connecting rod 2-4 and long connecting rod 2-7 is all hinged with connecting plate 2-5；V-shaped connecting rod 2-4Another arm top hinged with one end of short connecting rod 2-6；Hinged in the middle part of the other end of short connecting rod 2-6 and long connecting rod 2-7；The other end of long connecting rod 2-7 is hinged with hold-down head 2-8.

As shown in figure 5, horizontal-clamping mechanism 3 is by clamp jaw 3-1, horizontal hydraulic cylinder 3-2 and hydraulic cylinder mounting seat 3-3 groupBecome；The head of clamp jaw 3-1 is arcwall face；The afterbody of clamp jaw 3-1 is connected by screw thread with the piston rod of horizontal hydraulic cylinder 3-2Connect；The cylinder body of horizontal hydraulic cylinder 3-2 is fixed in hydraulic cylinder mounting seat 3-3；Hydraulic cylinder mounting seat 3-3 is fixed by screws in workOn station flat board 6.

As shown in Fig. 6,7 and 8, repeated impacts mechanism 5 is by bracing frame 5-1, motor 5-2, small pulley 5-3, belt 5-4, bigBelt wheel 5-5, bearing spider 5-6, rotating shaft 5-7, rotating handle 5-8, pendulum shaft stool 5-9, oscillating weight axle 5-10, pendulum bearing 5-11,Pendulum 5-12, slip-off preventing screw 5-13, mass 5-14 and drift 5-15 composition；Bracing frame 5-1 and motor 5-2 is each attached to workOn station flat board 6；Small pulley 5-3 is affixed with the output shaft of motor 5-2, and is connected by belt 5-4 with big belt wheel 5-5；Big bandWheel 5-5 is fixed on rotating shaft 5-7；Bearing spider 5-6 is fixed on bracing frame 5-1；Rotating shaft 5-7 is bearing in bearing by bearing and props upOn seat 5-6；The center of rotating handle 5-8 is fixed on rotating shaft 5-7；The top of pendulum 5-12 is bearing in by pendulum bearing 5-11On oscillating weight axle 5-10；Impactor is fixed on pendulum 5-12 top；Slip-off preventing screw 5-13 is connected with oscillating weight axle 5-10 end thread,To pendulum 5-12 axial limiting, prevent pendulum 5-12 from coming off；Oscillating weight axle 5-10 is fixed on pendulum shaft stool 5-9 by screw,Pendulum shaft stool 5-9 is fixed on bracing frame 5-1；Oscillating weight axle 5-10 axle center and rotating shaft 5-7 axle center distance are set to a, rotating handle 5-8Length be set to b, the oscillating weight axle 5-10 diameter of axle is set to r, and oscillating weight axle 5-10 axle center and Impactor outer end threshold value are set to c, then b/2+ r ＜ a ＜ b/2+c, ensures Impactor and Impactor outer end Intermittent Contact；Two pieces of mass 5-14 are symmetrically pacified by studsIt is contained in pendulum 5-12 bottom；Drift 5-15 and pendulum 5-12 bottom is threaded connection, and is directed at EMU wheel 4.

The operation principle of this EMU wheel impact fatigue testing machine:

First suitable mass 5-14 is installed according to the impulsive force size that test needs, then by motor train unitWheel 4 is placed on workbench flat board 6, then passes through controller and controls vertical clamp system 2 and horizontal-clamping mechanism 3, makes verticalClamp system 2 and horizontal-clamping mechanism 3 clamping EMU wheel 4.Motor 5-2 is started by controller, motor 5-2 passes throughTape handler (small pulley 5-3, belt 5-4 and big belt wheel 5-5) drives rotary shaft 5-7, thus it is clockwise that handle 5-8 is rotatedRotation, when rotating handle 5-8 is contacted with Impactor, drives pendulum 5-12 to rotate around oscillating weight axle 5-10, when pendulum 5-12 goes to necessarilyHighly, rotating handle 5-8 and Impactor depart from, pendulum 5-12 due to the action of gravity of mass 5-14 the bottom so that being arranged onDrift 5-15 impact high speed EMUs wheel 4 on pendulum 5-12, rebounds after drift 5-15 impact high speed EMUs wheel 4, thisWhen the rotating handle 5-8 other end contact with Impactor again, drive pendulum 5-12 rotates up around oscillating weight axle 5-10, to certain height,Rotating handle 5-8 is departed from Impactor, the pendulum 5-12 bottom, drift 5-15 impact high speed EMUs wheel 4.Rotating handle 5-8 circulatesRotate, drift 5-15 just periodic shock EMU wheel 4, until EMU wheel 4 damages.

Claims (3)

Translated fromChinese

1.高速动车组车轮冲击疲劳试验机，包括垂向夹紧机构、水平夹紧机构、重复冲击机构和工作台，其特征在于：n个水平夹紧机构沿圆周均布，n≥4；所述的垂向夹紧机构由安装板、垂向液压缸、连接套、V型连接杆、连接板、短连接杆、长连接杆和压紧头组成；所述的安装板固定在工作台上；垂向液压缸的缸体与安装板铰接，垂向液压缸的活塞杆与连接套通过螺纹连接；连接套与V型连接杆的一个臂顶端铰接；连接板焊接在安装板上；V型连接杆的底部及长连接杆的一端均与连接板铰接；V型连接杆的另一臂顶端与短连接杆的一端铰接；短连接杆的另一端与长连接杆中部铰接；长连接杆的另一端与压紧头铰接；1. High-speed EMU wheel impact fatigue testing machine, including vertical clamping mechanism, horizontal clamping mechanism, repeated impact mechanism and workbench, characterized in that: n horizontal clamping mechanisms are evenly distributed along the circumference, n≥4; The vertical clamping mechanism described above is composed of a mounting plate, a vertical hydraulic cylinder, a connecting sleeve, a V-shaped connecting rod, a connecting plate, a short connecting rod, a long connecting rod and a compression head; the described mounting plate is fixed on the workbench ;The cylinder body of the vertical hydraulic cylinder is hinged with the mounting plate, and the piston rod of the vertical hydraulic cylinder is connected with the connecting sleeve through threads; the connecting sleeve is hinged with the top of one arm of the V-shaped connecting rod; the connecting plate is welded on the mounting plate; V-shaped The bottom of the connecting rod and one end of the long connecting rod are hinged with the connecting plate; the top of the other arm of the V-shaped connecting rod is hinged with one end of the short connecting rod; the other end of the short connecting rod is hinged with the middle of the long connecting rod; The other end is hinged with the compression head;所述的水平夹紧机构由夹紧爪、水平液压缸和液压缸安装座组成；所述夹紧爪的头部为弧形面；夹紧爪的尾部与水平液压缸的活塞杆通过螺纹连接；水平液压缸的缸体固定在液压缸安装座中；液压缸安装座通过螺钉固定在工作台上；The horizontal clamping mechanism is composed of a clamping claw, a horizontal hydraulic cylinder and a hydraulic cylinder mounting seat; the head of the clamping claw is an arc-shaped surface; the tail of the clamping claw is connected to the piston rod of the horizontal hydraulic cylinder through threads ; The cylinder body of the horizontal hydraulic cylinder is fixed in the hydraulic cylinder mounting seat; the hydraulic cylinder mounting seat is fixed on the workbench by screws;所述的重复冲击机构包括支撑架、电机、小带轮、皮带、大带轮、轴承支座、转轴、旋转柄、摆锤轴支座、摆锤轴、摆锤轴承、摆锤、防脱落螺钉、质量块和冲头；所述的支撑架和电机均固定在工作台上；小带轮与电机的输出轴固接，并与大带轮通过皮带连接；大带轮固接在转轴上；轴承支座固接在支撑架上；所述的转轴通过轴承支承在轴承支座上；旋转柄的中心处固接在转轴上；摆锤的顶部通过摆锤轴承支承在摆锤轴上；碰撞块固定在摆锤顶部；防脱落螺钉与摆锤轴端部螺纹连接，对摆锤轴向限位；所述的摆锤轴固接在摆锤轴支座上，摆锤轴支座固接在支撑架上；摆锤轴轴心与转轴轴心距离设为a，旋转柄的长度设为b，摆锤轴轴径设为r，摆锤轴轴心与碰撞块外端端部距离设为c，则b/+r＜a＜b/+c；两块质量块通过双头螺柱对称安装在摆锤底部；所述的冲头与摆锤底部通过螺纹连接。The repeated impact mechanism includes a support frame, a motor, a small pulley, a belt, a large pulley, a bearing support, a rotating shaft, a rotating handle, a pendulum shaft support, a pendulum shaft, a pendulum bearing, a pendulum, and an anti-falling Screws, mass blocks and punches; the support frame and the motor are fixed on the workbench; the small pulley is fixedly connected with the output shaft of the motor, and is connected with the large pulley through a belt; the large pulley is fixed on the rotating shaft The bearing support is fixed on the support frame; the rotating shaft is supported on the bearing support through the bearing; the center of the rotating handle is fixed on the rotating shaft; the top of the pendulum is supported on the pendulum shaft through the pendulum bearing; The collision block is fixed on the top of the pendulum; the anti-falling screw is threadedly connected with the end of the pendulum shaft to limit the axial position of the pendulum; the pendulum shaft is fixedly connected to the pendulum shaft support, and the pendulum shaft support is fixed Connected to the support frame; the distance between the center of the pendulum shaft and the center of the rotating shaft is set as a, the length of the rotating handle is set as b, the diameter of the pendulum shaft is set as r, and the distance between the center of the pendulum shaft and the outer end of the collision block is Set as c, then b/+r<a<b/+c; the two mass blocks are symmetrically installed on the bottom of the pendulum through studs; the punch and the bottom of the pendulum are connected by threads.2.根据权利要求1所述的高速动车组车轮冲击疲劳试验机，其特征在于：所述的工作台由工作台平板和支撑工作台平板的工作台支撑柱组成。2. The wheel impact fatigue testing machine for high-speed EMU according to claim 1, characterized in that: the workbench is composed of a workbench flat plate and a workbench supporting column supporting the workbench flat plate.3.根据权利要求1所述的高速动车组车轮冲击疲劳试验机，其特征在于：所述的垂向液压缸、水平液压缸和电机均由控制器控制。3. The high-speed EMU wheel impact fatigue testing machine according to claim 1, characterized in that: said vertical hydraulic cylinder, horizontal hydraulic cylinder and motor are all controlled by a controller.