CN212568319U - Transverse fatigue test stand for axle box spring of railway vehicle - Google Patents

Abstract

The utility model discloses a railway vehicle axle box spring transverse fatigue test stand, one end of pull rod is articulated on the mobile fixed station through the round pin two, and the other end is articulated on the rocking arm through the round pin one, the upper end boss of eccentric wheel is installed in the round hole of rocking arm, and its lower extreme rotates the round bar fixedly connected with bearing inner race and belt pulley, the upper end of axle box spring is installed in the cylinder boss of telescopic sleeve plate, and its lower extreme is installed in the cylinder boss of mobile fixed station, one end of telescopic link is installed on the mobile fixed station, and the other end is installed in the telescopic sleeve plate, four telescopic sleeves of telescopic sleeve plate are installed in the telescopic hole respectively, through the cooperation of hydraulic press, telescopic sleeve plate and telescopic column realize the pretension to the axle box spring, through the cooperation between eccentric wheel, rocking arm, and pull rod realize the transverse reciprocating motion of mobile fixed station, the motor provides power to complete the transverse fatigue test of the axle box spring, and the running stability and safety of the railway vehicle are improved.

Description

Transverse fatigue test stand for axle box spring of railway vehicle

Technical Field

The utility model relates to a horizontal fatigue test technical field of spring mainly is applied to rail vehicle's axle box spring.

Background

The axle box is a movable joint connecting the wheel set and the framework, and the wheel set device and the framework of the bogie are connected together to form an organic whole, and the axle box spring suspension device plays an important role in ensuring whether the vehicle runs stably and comfortably, smoothly passes through a curve and ensures the safe running of the vehicle. Big data statistics show that on the list of vehicle maintenance failures, the failure due to the axle box spring accounts for a large proportion of the maintenance failures. Therefore, it is necessary to check the fatigue strength of the spring and check the safety of the spring.

Disclosure of Invention

An object of the utility model is to provide a railway vehicle axle box spring lateral fatigue test platform, aim at improving the stationarity and the security of railway vehicle operation, it is bigger to the rigidity demand, but the less spring of size ratio, the most main requirement of its measurement is exactly the precision of test bench, if the displacement of spring takes place than small change, the very big change just can take place for the final experimental result of surveying, lead to the experiment to take place very big error, so will guarantee the precision of experimental power and axle box spring displacement, guarantee the precision and be the key of ensureing to test successfully, also be the standard of judgement equipment performance simultaneously.

In order to achieve the technical purpose, the utility model adopts the following technical scheme:

the utility model provides a railway vehicle axle box spring transverse fatigue test platform, be provided with telescopic hole, hydraulic pressure machine and bearing frame step hole on the test bench shell, the one end of pull rod articulates on removing the fixed station through round pin two, and the other end articulates on the rocking arm through round pin one, the upper end boss of eccentric wheel is installed in the round hole of rocking arm, and its lower extreme rotates the inner circle and the belt pulley of round bar fixedly connected with bearing, the belt pulley passes through the belt and is connected with the motor, install in the cylinder boss of flexible lagging in the upper end of axle box spring, its lower extreme is installed in the cylinder boss of removing the fixed station, the one end of telescopic link is installed on removing the fixed station, and the other end is installed in flexible lagging, four expansion sleeves of flexible lagging are installed respectively in the telescopic hole.

In order to make the friction of the movable fixed platform of the axle box spring transverse fatigue test bed of the railway vehicle smaller, the roller I, the roller II, the roller III and the roller IV are preferably arranged in the groove of the movable fixed platform at equal intervals.

In order to make this railway vehicle axle box spring lateral fatigue test platform axle box spring's fixed more firm, conduct the utility model relates to an it is preferred, the cylinder boss of removal fixed station and flexible lagging all is provided with the thread line.

In order to make this transverse fatigue test platform axle box spring's of rail vehicle axle box spring pretension more accurate, conduct the utility model relates to an it is preferred, hydraulic press presses on flexible lagging, and the telescopic link is installed at the telescopic hole.

In order to make the lateral shifting of this kind of railway vehicle axlebox spring lateral fatigue test platform axlebox spring more accurate, as the utility model relates to a preferred, the rocking arm is a removable part, selects the rocking arm that the size is fit for through corresponding standard.

In order to make this kind of railway vehicle axle box spring lateral fatigue test platform motor speed can carry out linear control in the drive process, as the utility model relates to an it is preferred, the motor is AC servo motor.

The utility model has the advantages that:

(1) the utility model is suitable for a railway vehicle's axle box spring, the structure science is effective, and simple to use is reliable, has improved the big or small precision of experimental load and axle box spring displacement.

(2) The utility model discloses an eccentric wheel structure can reliably provide the required horizontal reciprocating motion of test effectively, improves fatigue test's efficiency.

(3) The utility model discloses a flexible lagging, can accomplish axle box spring's pretension accurately, satisfy fatigue test's requirement.

To sum up, the utility model discloses not only satisfy this basic requirement of fatigue test, but also can improve fatigue test's precision.

Drawings

FIG. 1 is a schematic structural view of a lateral fatigue test bed for journal box springs of railway vehicles.

Fig. 2 is the structure schematic diagram of the utility model under the state of removing the test bed shell.

Fig. 3 is a schematic structural diagram of the mobile fixed table and the rollers of the present invention.

Fig. 4 is the position schematic diagram of the step hole of the bearing seat of the present invention.

The following are part names represented by numbers in the figures:

1. a test bed housing; 2. a pull rod; 3. a rotating arm; 4. an eccentric wheel; 5. a pull rod chute; 6. a belt pulley; 7. a belt; 8. a motor; 9. moving the fixed table; 10. an axle box spring; 11. a telescopic rod; 12. a hydraulic press; 13. a telescopic sleeve plate; 14. a telescopic hole; 15. a bearing; 16. a first pin; 17. a second pin; 18. a first roller; 19. a second roller; 20. a roller III; 21. a roller four; 22. a bearing seat step hole;

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Referring to fig. 1-4, a railway vehicle axle box spring transverse fatigue test stand comprises a test stand shell 1, a telescopic hole 14, a hydraulic press 12 and a bearing seat step hole 22 are arranged on the test stand shell 1, a telescopic sleeve plate 13 is arranged in the telescopic hole 14, the upper end of the telescopic sleeve plate 13 is contacted with the hydraulic press 12, a cylindrical boss at the lower end of the telescopic sleeve plate 13 is arranged in one end of an axle box spring 10, a cylindrical boss of a movable fixed platform 9 is arranged in the other end of the axle box spring 10, a roller I18, a roller II 19, a roller III 20 and a roller IV 21 are arranged in a groove of the movable fixed platform 9 at equal intervals, one end of a pull rod 2 is hinged on the movable fixed platform 9 through a pin II 17, a rod body is arranged in a pull rod chute 5, the other end of the pull rod is hinged on a rotating arm 3 through a pin I16, a round hole of the rotating arm is arranged on a boss at the upper end of an, the outer ring of the bearing 15 is fixedly arranged in a step hole 22 of the bearing seat, the belt pulley 6 is connected with the motor 8 through a belt 7, and the motor 8 is fixedly connected on the test bed shell 1.

The utility model discloses an operating principle is to the horizontal fatigue test's of spring regulation in the basis of railway industry standard TB/T2211-2010: when a transverse fatigue test is carried out on the journal box spring 10, the lower end of the journal box spring is firstly installed in a cylindrical boss of the movable fixed platform 9, the upper end of the journal box spring is installed in a cylindrical boss of the telescopic sleeve plate 13 to play a role in restraint, due to the matching effect of the roller I18, the roller II 19, the roller III 20 and the roller IV 21 with the movable fixed platform 9, the journal box spring 10 can move transversely, in the moving process, the upper support surface and the lower support surface of the journal box spring 10 are kept parallel, the vertical load loading is completed through the hydraulic press 12, the pre-tightening is realized, the rotating arm 3 and the pull rod 2 are driven through the eccentric wheel 4, the rotation of the motor 8 is converted into translation, the movable fixed platform 9 can transversely reciprocate, the transverse load loading is completed, and the transverse fatigue test of the journal box spring 10 is completed through the linear adjustment of the speed.

The utility model discloses an use flow: when the railway vehicle axle box spring transverse fatigue test bed is used, a worker firstly lifts a hydraulic press 12 to the highest position, a telescopic sleeve plate 13 is manually lifted to be capable of being installed in an axle box spring 10, the lower end of the axle box spring 10 is installed in a cylindrical boss of a movable fixed platform 9, the upper end of the axle box spring is installed in the cylindrical boss of the telescopic sleeve plate 13, the vertical load and the transverse load of the axle box spring 10 are calculated according to the railway industry standard TB/T2211-2010, the loading of the vertical load is completed through the hydraulic press 12, the pre-tightening of the spring is realized, the transverse load of the axle box spring 10 is converted into the transverse displacement, a rotating arm 3 matched with the transverse displacement in length is selected according to the size of the transverse displacement, the hinging of the rotating arm 3 is completed through a pin I16, and finally a motor 8 is started to perform a.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims (3)

1. The utility model provides a railway vehicle axle box spring transverse fatigue test platform, includes test bench shell (1), concertina hole (14), hydraulic pressure machine (12), bearing frame step hole (22), pull rod (2), round pin two (17), removal fixed station (9), round pin one (16), rocking arm (3), eccentric wheel (4), bearing (15), belt pulley (6), belt (7), motor (8), axle box spring (10), flexible lagging (13), telescopic link (11), roller one (18), roller two (19), roller three (20), roller four (21) and concertina hole (14), characterized by: the test bed is characterized in that a telescopic hole (14), a hydraulic press (12) and a bearing seat step hole (22) are formed in the test bed shell (1), one end of the pull rod (2) is hinged to the movable fixing table (9) through a pin II (17), the other end of the pull rod is hinged to the rotating arm (3) through a pin I (16), an upper end boss of the eccentric wheel (4) is installed in a round hole of the rotating arm (3), the lower end of the eccentric wheel rotates an inner ring and a belt pulley (6) of a round rod fixedly connected with a bearing (15), the belt pulley (6) is connected with a motor (8) through a belt (7), the upper end of the axle box spring (10) is installed in a cylindrical boss of the telescopic sleeve plate (13), the lower end of the axle box spring is installed in a cylindrical boss of the movable fixing table (9), one end of the telescopic rod (11) is installed on the movable fixing table (9, the roller I (18), the roller II (19), the roller III (20) and the roller IV (21) are arranged in the groove of the movable fixed platform (9) at equal intervals, and four telescopic sleeves of the telescopic sleeve plate (13) are respectively arranged in the telescopic holes (14).

2. The railway car axle box spring lateral fatigue test stand of claim 1, wherein: the device is characterized in that the rod body of the pull rod (2) is arranged in a pull rod sliding groove (5), the pull rod sliding groove (5) is fixedly connected onto the test bed shell (1), the outer ring of the bearing (15) is fixedly connected into a step hole (22) of the bearing seat, and the motor (8) is fixedly connected onto the test bed shell (1).

3. The railway car axle box spring lateral fatigue test stand of claim 1, wherein: the cylindrical bosses of the movable fixed platform (9) and the telescopic sleeve plate (13) are provided with thread lines.

Images