CN202547844U - Detection device for power flexible transmission torque of test stand of railway vehicle transmission system - Google Patents

Abstract

The utility model discloses a detection device for power flexible transmission torque of a test stand of a railway vehicle transmission system. The device consists of a frequency modulation motor assembly (A), an overload protection mechanism assembly (B), a flange type torque meter (C), a power flexible transmission mechanism assembly (D) and a horizontal bearing platform (E), wherein all the frequency modulation motor assembly (A), the overload protection mechanism assembly (B), the flange type torque meter (C) and the power flexible transmission mechanism assembly (D) are fixedly arranged on the horizontal bearing platform (E) through T-shaped bolts; a power output shaft (4) of the frequency modulation motor assembly (A) is in key connection with the right end of the overload protection mechanism assembly (B); the left end of the overload protection mechanism assembly (B) is in bolted connection with the right end of a rotor in the flange type torque meter (C) through a No. 2 flange (8); and the left end of the rotor of the flange type torque meter (C) is connected with a No. 4 flange (23) of a transition shaft assembly (a) in the power flexible transmission mechanism assembly (D) by using a bolt. According to the detection device, accurate detection of torque of a tested vibrating platform can be realized.

Description

The flexible driving torque pick-up unit of rail vehicle Power Train Test Bench power

Technical field

The utility model relates to a kind of detection test unit, and more particularly, the utility model relates to the flexible driving torque pick-up unit of a kind of rail vehicle Power Train Test Bench power.

Background technology

The rail vehicle kinematic train is the bridge of the transmission of vehicle power, and its quality is related to the power performance of car load, is related to the serviceable life of car load and the security of vehicle.In recent years, the development of passenger vehicle high speed has become trend, and the performance to vehicle transmission system has had higher requirement simultaneously.Rail vehicle is in the process of operation; Motor, gear case, shaft coupling and bearing etc. are susceptible parts in the kinematic train; In order to find influence and restriction the kinematic train following main and key factor that lost efficacy of parts in the operation process; With the bogie kinematic train that improvement and raising will soon be developed, Jilin University's design is also taken Changchun Railway Vehicle Co., Ltd. by the hand and has been developed bullet train kinematic train reliability test bench.When this testing table can simulating vehicle goes at a high speed at full capacity; Kinematic train is receiving under the state of exciting; Carry out the test of kinematic train global reliability; Through the quality that parameters such as output torque and the vibration acceleration of test kinematic train under the testing table condition are come the reaction rail vehicle drive system, check the reliable life of parts such as vehicle traction electric machine, bearing, gear case, flexible coupling simultaneously.Under this condition, must have can be for this testing table provides power and realizes powerdriven device, and the numerical value that existing torque sensor is tested under the operating mode of high speed rotating and vibration can be seriously influenced, and the precision of sensor can't guarantee.Simultaneously, the existing detection test unit that is used to detect shaking platform is fewer, can not be applied to the kinematic train testing table of being developed.

Through retrieval Chinese patent notification number is 201837487U; The day for announcing is on 05 18th, 2011, and the patent No. is 201020590346, and the applying date is on November 04th, 2010; Invention and created name is " power flexible transmission moment of torsion detects test unit "; This patent has proposed a kind of power flexible transmission torque detecting apparatus, but being installed as of the transmission of power transition axis two ends of being designed in this device is cylindrical, has increased the difficulty when installing; And the flexible transmission part that adopts in this device, the spline pair that plays gearing is sliding friction, is to be prone to produce very high heat and to cause hot corrosion in running operating mode at a high speed.

Summary of the invention

The utility model technical matters to be solved is to have overcome the problem that prior art exists, and provides a kind of rail vehicle Power Train Test Bench power flexible driving torque pick-up unit.

For solving the problems of the technologies described above, the utility model is to adopt following technical scheme to realize: the flexible driving torque pick-up unit of described rail vehicle Power Train Test Bench power is made up of frequency modulation motor assembly, overload protecting mechanism assembly, flange form torque gauge, the flexible assembly of drive gear of power and horizontal bearing platform.

Described frequency modulation motor assembly is made up of inertial flywheel, frequency modulation motor and cooling blower, and the right-hand member key that inertial flywheel is sleeved on the PTO in the frequency modulation motor connects.

Described overload protecting mechanism assembly comprises flange, transmission of power flange shaft, safety coupling, No. 2 flanges, No. 1 flat key and No. 2 flat keys No. 1.No. 1 flange contacts with the big end flanges dish of transmission of power flange shaft and adopts bolt to be connected, the axis of rotation conllinear of No. 1 flange and transmission of power flange shaft.The cylinder axle head of transmission of power flange shaft adopts No. 1 flat key and No. 2 flat keys to realize that with safety coupling key is connected, and is connected for interference fit in the central through hole of No. 2 flanges of thin axle head insertion of the outer sleeve of safety coupling.

Be evenly equipped with threaded hole on the rotor right ends face in the described flange form torque gauge.

The flexible assembly of drive gear of described power is made up of transition axis assembly and power flexible gearing, and the right-hand member of the left end of transition axis assembly and power flexible gearing adopts bolt to be fixedly connected with the end face of flange key.

The flexible assembly of drive gear of described frequency modulation motor assembly, flange form torque gauge and power all is bolted on the horizontal bearing platform through the T type.The PTO of frequency modulation motor assembly is connected with the right-hand member key of overload protecting mechanism assembly; The left end of overload protecting mechanism assembly is connected with the rotor right-hand member bolt of flange form torque gauge through its No. 2 flanges, and No. 4 flange bolts in the rotor left end of flange form torque gauge and the power flexibility assembly of drive gear in the transition axis assembly are connected.

Transition axis assembly described in the technical scheme comprises No. 1 ring flange gland, No. 3 flanges, No. 1 round nut, No. 1 locking plate, No. 1 wedge key, No. 2 wedge keys, bearing seat, transition axis, No. 3 wedge keys, No. 4 wedge keys, No. 2 locking plates, No. 2 round nuts, No. 4 flanges and No. 2 ring flange glands.Transition axis is packed in the bearing seat for being rotationally connected; No. 1 locking plate and No. 1 round nut are installed in the left end of transition axis successively; No. 2 locking plates and No. 2 round nuts are installed in the right-hand member of transition axis successively; No. 3 flange adopts No. 1 wedge key and No. 2 wedge keys to be installed on the left end diminished shaft in the transition axis; No. 2 flange adopts No. 3 wedge keys and No. 4 wedge keys to be installed on the right-hand member diminished shaft in the transition axis, and No. 1 ring flange gland adopts and is bolted on the left side of transition axis, and No. 2 ring flange glands adopt and are bolted on the right side of transition axis; The two ends of the transition axis described in the technical scheme are left end diminished shaft and right-hand member diminished shaft; The tapering of left end diminished shaft and right-hand member diminished shaft is 1:10; Be respectively arranged with two identical wedge shape keyways of laterally zygomorphic structure on the taper surface of left end diminished shaft and right-hand member diminished shaft; It between left end diminished shaft and the right-hand member diminished shaft the cylindrical multidiameter of the structural symmetry of established angle contact ball bearing; The inboard of cylindrical multidiameter and left end diminished shaft and right-hand member diminished shaft junction is provided with the external thread that No. 1 round nut and No. 2 round nuts are installed, and cylindrical multidiameter is provided with externally threaded position and is processed with vertically No. 1 locking plate of installation and the groove of No. 2 locking plates; Bearing seat described in the technical scheme comprises bearing spider body, four angular contact ball bearing, two labyrinth oil seal discs and two labyrinth oil seal bearing (ball) covers that structure is identical that structure is identical that structure is identical.Described bearing spider body is made up of with the installation base plate the transition axis cylindrical shell that is horizontal, support wallboard.The through hole of transition axis cylindrical shell is the ladder hole of left-right symmetric structure; Be in that transition axis cylindrical shell through hole two ends are outermost to be the cylindrical hole of established angle contact ball bearing, labyrinth oil seal disc and labyrinth oil seal bearing (ball) cover, the rectangular through hole that is evenly equipped with erection bolt on the base plate is installed.Four two identical of angular contact ball bearings of structure are one group; Two groups of angular contact ball bearings are installed in the bearing spider body in the outermost cylindrical hole in transition axis cylindrical shell through hole two ends; The outside that two identical labyrinth oil seal discs of structure are installed in two groups of angular contact ball bearings connects for contact; The labyrinth oil seal bearing (ball) cover that two structures are identical adopts bolt to be installed in the bearing spider body on the transition axis cylindrical shell both ends of the surface; And be positioned at the outside of the identical labyrinth oil seal disc of two structures; The flange of labyrinth oil seal bearing (ball) cover one side that two structures are identical inserts in the outermost cylindrical hole in transition axis cylindrical shell through hole two ends, and the central through hole of the labyrinth oil seal bearing (ball) cover that two structures are identical simultaneously is sleeved on the interior food tray ring body of the identical labyrinth oil seal disc of two structures; Labyrinth oil seal disc described in the technical scheme is the stepped appearance circular ring spare that interior torus and outer toroid cone are formed; The center of labyrinth oil seal disc is provided with through hole vertically; The cylindrical anchor ring of interior torus one end is provided with three labyrinth annular grooves, the outer toroid cone be provided with the labyrinth oil seal bearing (ball) cover on the equipped disc location and installation battle pin and the drainage conical surface of disc location and installation groove.Described labyrinth oil seal bearing (ball) cover is the annular disk-like structural member; Its center is provided with through hole vertically; The left side of through hole is provided with disc location and installation groove; The inwall of through hole be provided with three with the labyrinth oil seal disc on the inwall labyrinth annular groove that matches of three labyrinth annular grooves, the inwall annular groove is provided with spill port; Power flexible gearing described in the technical scheme is made up of No. 1 two fork of universal joint flange, ball spline formula transmission shaft and No. 2 two fork of universal joint flanges.Described ball spline formula transmission shaft comprises that splined sleeve, spline housing, splined shaft, splined shaft connecting flange, No. 3 ring flange glands, No. 1 connection wedge key, No. 2 connection wedge keys, 6 row splined shaft rolling steel balls, No. 1 connection flat keys are connected flat key with No. 2.Splined sleeve is sleeved on the spline housing and adopts No. 1 connection flat key to be connected flat key with No. 2 and connects.The spline housing that is set with splined sleeve is sleeved on the left end of splined shaft, and 6 row splined shaft rolling steel balls are packed in 6 passages that are made up of spline housing and splined shaft.The splined shaft connecting flange is sleeved on the diminished shaft of splined shaft right-hand member and adopts and connects wedge key for No. 1 and be connected the wedge key connection with No. 2.No. 3 the ring flange gland is connected through bolt on the right side of diminished shaft in the splined shaft, and the annular left side of No. 3 ring flange glands is connected with the right side contact of splined shaft connecting flange bellmouth.No. 1 the two fork of universal joint flange is identical with No. 2 two fork of universal joint flange arrangements, all is made up of No. 1 end face of flange key, No. 1 universal joint flange, No. 1 joint spider, No. 2 universal joint flanges, No. 2 end face of flange keys, No. 1 cross shaft bearing, No. 2 cross shaft bearings, No. 3 cross shaft bearings and No. 4 cross shaft bearings.Said No. 1 joint spider is the symmetrical junction member that two axles intersecting vertically are formed; The two ends of every axle are the work axle journal; The a pair of work axle journal of axis of rotation conllinear is set with No. 1 cross shaft bearing and No. 2 cross shaft bearings on No. 1 joint spider, and a pair of work axle journal that is set with No. 1 cross shaft bearing and No. 2 cross shaft bearings is installed in No. 1 two joint entry on the universal joint flange to being rotationally connected; Another of axis of rotation conllinear is set with No. 3 cross shaft bearings and No. 4 cross shaft bearings to the work axle journal on No. 1 joint spider, and a pair of work axle journal that is set with No. 3 cross shaft bearings and No. 4 cross shaft bearings is installed in No. 2 two joint entries on the universal joint flange to being rotationally connected.Described No. 1 end face of flange key is all the identical strip structure spare of structure with No. 2 end face of flange keys, and No. 1 end face of flange key and No. 2 end face of flange keys are installed in the keyway on No. 1 universal joint flange and No. 2 universal joint flange bottom surfaces; The left end of the splined shaft described in the technical scheme is a barrel portion; Be evenly equipped with three groups of splines on the cylindrical face of cylinder vertically; Angle between the two adjacent groups spline is 120 degree, and the xsect that every group of spline is parallel to each other by two row is that the groove of semicircular perforation is formed.The right-hand member of splined shaft is a diminished shaft, and tapering is 1:10, is provided with two installations on the taper surface of diminished shaft symmetrically and connects wedge key is connected wedge key with No. 2 wedge key groove No. 1, and the threaded hole that is provided with four mounting flange glands is arranged on the right side of diminished shaft.

Compared with prior art the beneficial effect of the utility model is:

1. in the flexible driving torque pick-up unit of the described rail vehicle Power Train Test Bench of the utility model power a frequency modulation motor is installed; Can be tested shaking platform driving force is provided; And designed flywheel at the motor of selecting for use one end, the steady conversion the when inertia effect that utilizes flywheel to rotate is realized motor frequency modulation.

2. the flexible driving torque pick-up unit of the described rail vehicle Power Train Test Bench of the utility model power can be realized the accurate detection of the moment of torsion of tested shaking platform; Be designed with the transition axis parts that two ends are taper in this device simultaneously; Made things convenient for the installation of axle head; And absorb vibration and interference effectively from tested shaking platform, and improved the precision that detects, protected torque sensor.

3. set scalable ball spline formula cross-axle universal shaft gearing changes the sliding friction fit system of common cross-axle universal shaft coupling spline pair into the rolling friction fit system in the flexible driving torque pick-up unit of the described rail vehicle Power Train Test Bench of the utility model power; The phenomenons such as heat etching that a large amount of heats of translation friction generates cause when transmitting owing to high pulling torque have been avoided; Thereby reduced mechanical loss, improved transmission efficiency.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further described:

Fig. 1 is the axonometric projection graph that the flexible driving torque pick-up unit of the described rail vehicle Power Train Test Bench of the utility model power structure is formed;

Fig. 2 is two of the axonometric projection graph formed of the flexible driving torque pick-up unit of the described rail vehicle Power Train Test Bench of the utility model power structure;

Fig. 3 is the axonometric projection graph of the frequency modulation motor assembly that adopted in the flexible driving torque pick-up unit of the described rail vehicle Power Train Test Bench of the utility model power;

Fig. 4 is the axonometric projection graph of the overload protecting mechanism assembly that adopted in the flexible driving torque pick-up unit of the described rail vehicle Power Train Test Bench of the utility model power;

Fig. 5 is the full sectional view on the front view of the overload protecting mechanism assembly that adopted in the flexible driving torque pick-up unit of the described rail vehicle Power Train Test Bench of the utility model power;

Fig. 6 is the breakdown axonometric projection graph of the overload protecting mechanism assembly that adopted in the flexible driving torque pick-up unit of the described rail vehicle Power Train Test Bench of the utility model power;

Fig. 7-a is the axonometric projection graph of No. 1 flange in the overload protecting mechanism assembly that is adopted in the flexible driving torque pick-up unit of the described moving rail vehicle Power Train Test Bench power of the utility model;

Fig. 7-b is the full sectional view on No. 1 flange front view in the overload protecting mechanism assembly that is adopted in the flexible driving torque pick-up unit of the described moving rail vehicle Power Train Test Bench power of the utility model;

Fig. 8-a is the axonometric projection graph of the transmission of power flange shaft in the overload protecting mechanism assembly that is adopted in the flexible driving torque pick-up unit of the described moving rail vehicle Power Train Test Bench power of the utility model;

Fig. 8-b is the full sectional view on the transmission of power flange shaft front view in the overload protecting mechanism assembly that is adopted in the flexible driving torque pick-up unit of the described moving rail vehicle Power Train Test Bench power of the utility model;

Fig. 9 is the axonometric projection graph of the safety coupling in the overload protecting mechanism assembly that is adopted in the flexible driving torque pick-up unit of the described rail vehicle Power Train Test Bench of the utility model power;

Figure 10-a is the axonometric projection graph of No. 2 flanges in the overload protecting mechanism assembly that is adopted in the flexible driving torque pick-up unit of the described moving rail vehicle Power Train Test Bench power of the utility model;

Figure 10-b is the full sectional view on No. 2 flange front views in the overload protecting mechanism assembly that is adopted in the flexible driving torque pick-up unit of the described moving rail vehicle Power Train Test Bench power of the utility model;

Figure 11 is the axonometric projection graph of the flange form torque gauge that adopted in the flexible driving torque pick-up unit of the described rail vehicle Power Train Test Bench of the utility model power;

Figure 12 is the axonometric projection graph of the flexible assembly of drive gear of power that adopted in the flexible driving torque pick-up unit of the described rail vehicle Power Train Test Bench of the utility model power;

Figure 13 is the axonometric projection graph of the transition axis assembly that adopted in the flexible driving torque pick-up unit of the described rail vehicle Power Train Test Bench of the utility model power;

Figure 14 is the breakdown axonometric projection graph of the transition axis assembly that adopted in the flexible driving torque pick-up unit of the described rail vehicle Power Train Test Bench of the utility model power;

Figure 15 is the front view of the transition axis assembly that adopted in the flexible driving torque pick-up unit of the described rail vehicle Power Train Test Bench of the utility model power;

Figure 16-a is the axonometric projection graph of the cone-shaped flange that adopted of the transition axis assembly in the flexible driving torque pick-up unit of the described rail vehicle Power Train Test Bench of the utility model power;

Figure 16-b is the full sectional view on the cone-shaped flange front view that adopted of the transition axis assembly in the flexible driving torque pick-up unit of the described rail vehicle Power Train Test Bench of the utility model power;

Figure 17 is No. 1 ring flange gland being adopted of the transition axis assembly in the flexible driving torque pick-up unit of the described rail vehicle Power Train Test Bench of the utility model power or the axonometric projection graph of No. 2 ring flange glands;

Figure 18 is the axonometric projection graph of the transition axis that adopted of the transition axis assembly in the flexible driving torque pick-up unit of the described rail vehicle Power Train Test Bench of the utility model power;

Figure 19 is the axonometric projection graph of the power flexible gearing that adopted in the flexible driving torque pick-up unit of the described rail vehicle Power Train Test Bench of the utility model power;

Figure 20 is the axonometric projection graph of the ball spline formula transmission shaft that adopted in the flexible driving torque pick-up unit of the described rail vehicle Power Train Test Bench of the utility model power;

Figure 21 is the breakdown axonometric projection graph of the ball spline formula transmission shaft that adopted in the flexible driving torque pick-up unit of the described rail vehicle Power Train Test Bench of the utility model power;

Figure 22 is the breakdown shaft side projection drawing of the two fork of No. 1 cardan (hookes)universal joint flange in the flexible assembly of drive gear of power that is adopted in the flexible driving torque pick-up unit of the described rail vehicle Power Train Test Bench of the utility model power;

Figure 23-a is the labyrinth oil seal disc that adopted of the transition axis assembly in the flexible driving torque pick-up unit of the described rail vehicle Power Train Test Bench of the utility model power and the axonometric projection graph of labyrinth oil seal bearing (ball) cover assembly;

Figure 23-b is the labyrinth oil seal disc that adopted of the transition axis assembly in the flexible driving torque pick-up unit of the described rail vehicle Power Train Test Bench of the utility model power and the full sectional view on the labyrinth oil seal bearing (ball) cover assembly front view;

Figure 24-a is the axonometric projection graph of the labyrinth oil seal disc that adopted of the transition axis assembly in the flexible driving torque pick-up unit of the described rail vehicle Power Train Test Bench of the utility model power;

Figure 24-b is the full sectional view on the labyrinth oil seal disc front view that adopted of the transition axis assembly in the flexible driving torque pick-up unit of the described rail vehicle Power Train Test Bench of the utility model power;

Figure 25-a is the axonometric projection graph of the labyrinth oil seal bearing (ball) cover that the transition axis assembly adopted in the flexible driving torque pick-up unit of the described rail vehicle Power Train Test Bench of the utility model power;

Figure 25-b is the full sectional view on the labyrinth oil seal bearing (ball) cover front view that adopted of the transition axis assembly in the flexible driving torque pick-up unit of the described rail vehicle Power Train Test Bench of the utility model power;

Among the figure: A. frequency modulation motor assembly, B. overload protecting mechanism assembly, C. flange form torque gauge, the flexible assembly of drive gear of D. power, E. horizontal bearing platform, a. transition axis assembly; B. power flexible gearing, the two fork of number cardan (hookes)universal joint flanges c.1, d. ball spline formula transmission shaft, the e.2 two fork of number cardan (hookes)universal joint flange, 1. inertial flywheel, 2. frequency modulation motors; 3. cooling blower, 4. PTO, No. 5.1 flanges, 6. transmission of power flange shaft, 7. safety coupling, No. 8.2 flanges; 9.1 number flat key, No. 10.2 flat keys, No. 11.1 ring flange glands, No. 12.3 flanges, No. 13.1 round nuts, No. 14.1 locking plates; 15.1 number wedge key, No. 16.2 wedge keys, 17. bearing seats, 18. transition axises, No. 19.3 wedge keys, No. 20.4 wedge keys; 21.2 number locking plate, No. 22.2 round nuts, No. 23.4 flanges, No. 24.2 ring flange glands, 25. angular contact ball bearings, 26. labyrinth oil seal discs; 27. the labyrinth oil seal bearing (ball) cover, 28. splined sleeves, 29. spline housings, 30. splined shafts, 31. splined shaft connecting flanges, No. 32.3 ring flange glands; 33.1 number connection wedge key, No. 34.2 connection wedge keys, 35.6 row splined shaft rolling steel balls, No. 36.1 connection flat keys, No. 37.2 connection flat keys; 38.1 number end face of flange key, No. 39.1 universal joint flanges, No. 40.1 joint spiders, No. 41.2 universal joint flanges, No. 42.2 end face of flange keys; 43. the bearing spider body, 44. disc location and installation battle pins, 45. drainage inclined-planes, 46. disc location and installation grooves, 47. spill ports.

Embodiment

Below in conjunction with accompanying drawing the utility model is explained in detail:

Consult Fig. 1,2, the flexible driving torque pick-up unit of described rail vehicle Power Train Test Bench power is made up of frequency modulation motor assembly A, overload protecting mechanism assembly B, flange form torque gauge C, the flexible assembly of drive gear D of power and horizontal bearing platform E.Described frequency modulation motor assembly A, overload protecting mechanism assembly B, flange form torque gauge C, the flexible assembly of drive gear D of power all are bolted on the horizontal bearing platform E through the T type.The PTO 4 of frequency modulation motor assembly A is connected with one (right side) the end key of overload protecting mechanism assembly B realizes power output; Another (left side) of overload protecting mechanism assembly B end is held with the rotor one (right side) of flange form torque gauge C through No. 2 flanges 8 and bolt and is connected; Another (left side) end of flange form torque gauge C rotor is fixedly connected through No. 4 flanges 23 among the transition axis assembly a among bolt and the flexible assembly of drive gear D of power, the real-time detection of moment of torsion and rotating speed in the realization power transmission process.

Consult Fig. 2,3; Described frequency modulation motor assembly A mainly is made up of inertial flywheel 1, frequency modulation motor 2 and cooling blower 3, and described inertial flywheel 1 is a disc-shaped structure, is different at inertial flywheel 1 thickness radially; Position near the flywheel center of inertial flywheel 1 is thinner; Away from inertial flywheel 1 center is that submarginal position is thicker, and the quality majority of related in other words inertial flywheel 1 concentrates on the outer rim of inertial flywheel 1, according to the computing formula of moment of inertia: J=MR ²Can know; The inertial flywheel 1 of this structure obtains bigger moment of inertia under the certain situation of quality; Having improved the energy storage effect of inertial flywheel 1. axially extending bore is left in the center of inertial flywheel 1; The right-hand member that the axially extending bore of the center of inertial flywheel 1 is provided with the PTO 4 of a keyway and frequency modulation motor 2 is connected through a general flat key, and the steady conversion during Application and implementation frequency modulation motor 2 frequency modulation of inertial flywheel 1 has reduced the fluctuation of power transmission process medium velocity; The design of described frequency modulation motor 2 and cooling blower 3 is the high-tension motor manufacturing of YKK5003-8 with reference to the model that asynchronous machine company limited in Xi'an produces, and wherein, the rated power of frequency modulation motor 2 designs is 900KW, and rated speed is 1700r/min.

Consult Fig. 4 to Figure 10-b, described overload protecting mechanism assembly B mainly is made up of No. 1 flange 5, transmission of power flange shaft 6,9, No. 2 flat keys 10 of 8, No. 1 flat key of 7, No. 2 flanges of safety coupling and standard bolt.Described No. 1 flange 5 is connected the transmission that realizes power through laterally zygomorphic two keyways of its axially extending bore with laterally zygomorphic two keyway fit keys of the PTO 4 of frequency modulation motor 2; The big end flanges dish of described No. 1 flange 5 contacts with the big end flanges dish of transmission of power flange shaft 6; And pass the through hole close-coupled on the big end disc of No. 1 flange 5 and transmission of power flange shaft 6 through bolt, the axis of rotation conllinear of No. 1 flange 5 and transmission of power flange shaft 6; The cylinder axle head of transmission of power flange shaft 6 is provided with laterally zygomorphic two keyways, realizes that through the safety coupling 7 of No. 1 flat key 9 and No. 2 flat keys 10 and the cylinder axle head that is sleeved on transmission of power flange shaft 6 keys are connected; The interior one-tenth of the center axially extending bore interference fit that the thin axle head of the outer sleeve of safety coupling 7 inserts No. 2 flanges 8 is connected, and safety coupling 7 plays the effect of torque limited and overload protection in power transmission process.

Described transmission of power flange shaft 6 is made up of big end disc and the cylinder axle head that stretches out; The big end disc of transmission of power flange shaft 6 near being evenly equipped with some through holes on the circumferential edges; Adopt bolt and No. 1 flange 5 to achieve a fixed connection; The cylinder axle head of transmission of power flange shaft 6 is provided with two keyways of symmetry up and down, realizes the connection that cooperates with safety coupling 7 through No. 1 flat key 9 and No. 2 flat keys 10.

Consult Figure 11; Be that the model that is adopted in the flexible driving torque pick-up unit of the described rail vehicle Power Train Test Bench of the utility model power is JN338-AF series flange form torque gauge C among the figure; Be evenly equipped with threaded hole on the rotor right ends face among the flange form torque gauge C; Through bolt realized with overload protecting mechanism assembly B in being fixedly connected of No. 2 flanges 8 and No. 4 flanges 23 among the transition axis assembly a, for the detection of moment of torsion and rotating speed provides condition.

Consult Figure 12, the flexible assembly of drive gear D of described power mainly is made up of transition axis assembly a and power flexible gearing b.The left end of transition axis assembly a is fixedly connected through bolt and end face of flange key with the right-hand member of power flexible gearing b, and the right-hand member of transition axis assembly a is connected with the left end of power flexible gearing b and the relevant device of the flexible driving torque pick-up unit of rail vehicle Power Train Test Bench power.

Consult Figure 13 to Figure 18, described transition axis assembly a is that various standard bolts are formed by 15, No. 2 wedge keys 16 of 14, No. 1 wedge key of 13, No. 1 locking plate of 12, No. 1 round nut of 11, No. 3 flanges of No. 1 ring flange gland, bearing seat 17,23, No. 2 ring flange glands 24 of 22, No. 4 flanges of 21, No. 2 round nuts of 20, No. 2 locking plates of 19, No. 4 wedge keys of 18, No. 3 wedge keys of transition axis mainly.

Transition axis 18 is packed in the bearing seat 17 for being rotationally connected.No. 1 locking plate 14 and No. 1 round nut 13 are used; Be installed in the left end of transition axis 18 successively; Internal thread and the fastening left end that is connected in bearing seat 17 of the external thread on the transition axis 18 through No. 1 round nut 13; 14 accepted standards of No. 1 locking plate among the embodiment are GB/T858-1988, and 13 accepted standards of No. 1 round nut are GB/T812-1988.No. 2 locking plates 21 and No. 2 round nuts 22 are used, and are installed in the right-hand member of transition axis 18 successively, through the internal thread and the fastening right-hand member that is connected in bearing seat 17 of the external thread on the transition axis 18 of No. 2 round nuts 22.Described No. 1 flange 12 through wedge key promptly No. 1 flange 12 of wedge shape keyway cooperation realization on the left diminished shaft of No. 1 wedge key 15 and No. 2 wedge keys 16 and transition axis 18 be connected with the key of transition axis 18 left ends; Simultaneously on the left side of No. 1 ring flange gland 11 left diminished shaft through being bolted to transition axis 18; The left side contact of ladder hole is connected on the right annular end face of No. 1 ring flange gland 11 and No. 1 flange 12; Make No. 1 ring flange gland 11 compress flange 12 No. 1 through tighting a bolt, realize that transition axis 18 left end shaft are connected with the tight of No. 1 flange 12.No. 2 flanges 23 are connected with the key of transition axis 18 right-hand members through No. 2 flanges 23 of wedge shape keyway cooperation realization on the right diminished shaft of No. 3 wedge keys 19 and No. 4 wedge keys 20 and transition axis 18; On the right side of while No. 2 ring flange glands 24 through the right diminished shaft of bolt transition axis 18; The right side contact of ladder hole is connected on the left annular end face of No. 2 ring flange glands 24 and No. 2 flanges 23; Make No. 2 ring flange glands 24 compress flange 23 No. 2 through tighting a bolt, realize that the right diminished shaft of transition axis 18 is connected with the tight of No. 2 flanges 23.No. 1 round nut 13 and No. 2 round nut 12 structures are identical; No. 1 locking plate 14 and No. 2 locking plate 21 structures are identical; 16, No. 3 wedge keys 19 of 15, No. 2 wedge keys of No. 1 wedge key and No. 4 wedge key 20 structures are identical.

Consult Figure 15, described bearing seat 17 comprises bearing spider body 43, four identical in structure angular contact ball bearings 25, two identical in structure labyrinth oil seal discs 26 and two identical in structure labyrinth oil seal bearing (ball) covers 27.Four identical in structure angular contact ball bearings 25 employing models are the bearing of FAG 7224C among the embodiment; Bearing spider body 43 is made up of with the installation base plate the transition axis cylindrical shell that is horizontal, support wallboard; Transition axis cylindrical shell, support wallboard are fixedly connected sequentially with the installation base plate and are integral; Can adopt welding or forging type to process; The through hole axis of rotation of transition axis cylindrical shell is parallel with the installation base plate; The through hole of transition axis cylindrical shell is the ladder hole of left-right symmetric structure, and being in transition axis cylindrical shell through hole two ends outermost is to be used for the cylindrical hole of established angle contact ball bearing 25, labyrinth oil seal disc 26 and labyrinth oil seal bearing (ball) cover 27, and the rectangular through hole that is evenly equipped with erection bolt on the base plate is installed.Two in four identical in structure angular contact ball bearings 15 is one group; Two groups of angular contact ball bearings 15 are installed in and are in the outermost cylindrical hole in transition axis cylindrical shell through hole two ends; The outside that two identical labyrinth oil seal discs 26 of structure are installed in two groups of angular contact ball bearings 25 connects for contact; The labyrinth oil seal bearing (ball) cover 27 that two structures are identical adopts bolts to be installed in the bearing spider body 43 on the transition axis cylindrical shell both ends of the surface; And be positioned at the outside of the identical labyrinth oil seal disc 26 of two structures; The flange of labyrinth oil seal bearing (ball) cover 27 1 sides that two structures are identical inserts in the outermost cylindrical hole in transition axis cylindrical shell through hole two ends, and the central through hole of the labyrinth oil seal bearing (ball) cover 27 that two structures are identical simultaneously is sleeved on the interior food tray ring body of the identical labyrinth oil seal disc 26 of two structures.

Transition axis 18 is packed into and is meant for being rotationally connected in the bearing seat 17: transition axis 18 two groups of angular contact ball bearings 25, two labyrinth oil seal discs 26 that structure the is identical labyrinth oil seal bearing (ball) cover 27 identical with two structures of packing into is interior for being rotationally connected.In other words: two groups of angular contact ball bearings 25 are set with the two ends of transition axis 18, and the transition axis 18 among the promptly described transition axis assembly a is installed in through two groups of angular contact ball bearings 25 in the through hole of bearing spider body 43 upper ends to being rotationally connected.The right annular end face of the shaft shoulder of the inboard end face of the inner bearing collar of inboard angular contact ball bearing 25 and transition axis 18 contacts and is connected in two groups of angular contact ball bearings 25; The left side contact of the interior food tray ring body of the right side of the inner bearing collar of the angular contact ball bearing 25 in the outside labyrinth oil seal disc 26 identical with two structures is connected (the double bearing inner ring positioning retainer ring of doing of the interior food tray ring body that contacts with angular contact ball bearing 25 in the labyrinth oil seal disc 26) in two groups of angular contact ball bearings 25; The right side of the interior food tray ring body of 1 labyrinth oil seal disc 26 contacts successively with No. 2 round nuts 22 with No. 2 locking plates 21 and is connected, and the left side of the interior food tray ring body of 1 labyrinth oil seal disc 26 contacts the effect that is connected and plays axial location with No. 1 locking plate 14 with No. 1 round nut 13 successively in addition.Labyrinth oil seal disc 26 is used with labyrinth oil seal bearing (ball) cover 27; For bearing seat 17 provides oil sealing and sealing gland effect; Through the installing and tighten with the installation successively of No. 2 locking plates 21 and No. 2 round nuts 22 successively and tighten of No. 1 locking plate 14 and No. 1 round nut 13, improved the preload of bearing in the outside of the labyrinth oil seal bearing (ball) cover 27 of transition axis 18 right ends.

Described transition axis 18 is symmetrical axle class formation spare; Two ends are that diminished shaft is left end diminished shaft and right-hand member diminished shaft; The tapering of left end diminished shaft and right-hand member diminished shaft is 1:10; Be respectively arranged with two identical wedge shape keyways of laterally zygomorphic structure on the taper surface of left end diminished shaft and right-hand member diminished shaft, transition axis 18 left end diminished shafts are connected with No. 3 flange 12 fit keys with No. 2 wedge keys 16 through No. 1 wedge key 15; The right-hand member diminished shaft of transition axis 18 is connected with No. 4 flange 23 fit keys with No. 4 wedge keys 20 through No. 3 wedge keys 19.It between left end diminished shaft and the right-hand member diminished shaft the cylindrical multidiameter that the structural symmetry of four identical in structure angular contact ball bearings 25 is installed; The inboard of cylindrical multidiameter and left end diminished shaft and right-hand member diminished shaft junction is provided with the external thread that No. 1 round nut 13 and No. 2 round nuts 22 are installed, and cylindrical multidiameter is provided with externally threaded position and is provided with vertically No. 1 locking plate 14 of installation and the groove of No. 2 locking plates 21.Described transition axis 18 is made according to UNI 6787-71 standards, bears alternation radially 10T and axial 8T dynamic loading.

Consult Figure 23 to Figure 25; Described labyrinth oil seal disc 26 is the stepped appearance circular ring spare that interior torus and outer toroid cone are formed; The center of labyrinth oil seal disc 26 is provided with through hole vertically; The cylindrical anchor ring of interior torus one end is provided with three labyrinth annular grooves, to strengthen the resistance to flow of oil; The right side of the outer toroid cone of labyrinth oil seal disc 26 is provided with the disc location and installation battle pin 44 and the drainage conical surface 45; Disc location and installation battle pin 44 is encased in the disc location and installation groove 46 on the labyrinth oil seal bearing (ball) cover 27, connects for clearance fit between the two.

Described labyrinth oil seal bearing (ball) cover 27 is the annular disk-like structural member; Its center is provided with through hole vertically; The left side of through hole is provided with disc location and installation groove 46, and the inwall of through hole is provided with three inwall labyrinth annular grooves, and three inwall labyrinth annular grooves are provided with three labyrinth annular grooves with the outside surface of labyrinth oil seal disc 26 thinner end axles and match; Constitute concavo-convex ring seal toothing, the inwall annular groove is provided with spill port 47 simultaneously.In the process of high speed rotating; The lubricant that splashes is soaring gradually along drainage inclined-plane 45 to be overflowed in the concavo-convex ring seal toothing that labyrinth oil seal disc 26 and labyrinth oil seal bearing (ball) cover 27 constituted through disc location and installation battle pin 44, disc location and installation groove 46, and the lubricant of overflow whenever through sealing tooth together, must run into very big resistance; Produce throttling effect; Weaken the speed of lubricant, the backlash of the lubricant after weakening in the middle of the sealing tooth trickles to the bottom of labyrinth oil seal bearing (ball) cover 27 toroidal cavities, then; The spill port that passes through to the toroidal cavity bottom turns back in the bearing spider body 43, realizes preventing the effect that lubricant leaks outside.

Consult Figure 19, described power flexible gearing b is made up of ball spline formula transmission shaft d, No. 1 cardan (hookes)universal joint two fork flange c and No. 2 two fork of cardan (hookes)universal joint flange e.The right ends of described ball spline formula transmission shaft d is connected through bolt with No. 1 cardan (hookes)universal joint two fork flange c and No. 2 two fork of cardan (hookes)universal joint flange e.The two fork of described No. 1 cardan (hookes)universal joint flange c is identical with No. 2 two fork of cardan (hookes)universal joint flange e structures; No. 1 cardan (hookes)universal joint two fork flange c and No. 2 cardan (hookes)universal joint two fork flange e and described ball spline formula transmission shaft d are coaxial, two links that No. 1 cardan (hookes)universal joint two fork flange c and No. 2 two fork of cardan (hookes)universal joint flange e are connected with other device as power flexible gearing b.

Consult Figure 20 and Figure 21, described ball spline formula transmission shaft d is mainly connected 33, No. 2 connections of wedge key wedge key, 34,6 row splined shaft rolling steel balls, 35, No. 1 connection flat key 36 for 32, No. 1 and is connected flat keys 37 for No. 2 by splined sleeve 28, spline housing 29, splined shaft 30,31, No. 3 ring flange glands of splined shaft connecting flange and forms.

Described splined sleeve 28 connects flat key 36 through No. 1 and No. 2 connection flat keys 37 are rigidly connected for suit with spline housing 29; There is not relative motion at circumferencial direction between splined sleeve 28 and the spline housing 29; Be convenient to dismounting axially can sliding relatively, realize both transmission of power.Described spline housing 29 is sleeved on to become to roll on the splined shaft 30 through 6 row splined shaft rolling steel balls 35 and connects; 6 row splined shaft rolling steel balls 35 are rolled in the circular channel that spline housing 29 and splined shaft 30 are constituted, and have realized the axial stretching of described ball spline formula transmission shaft d.Described splined shaft connecting flange 31 is connected the tapered shaft end one-tenth that wedge key 34 is sleeved in the splined shaft 30 and is rigidly connected through connecting wedge key 33 for No. 1 with No. 2.The end face of the tapered shaft end in the splined shaft 30 contacts with No. 3 ring flange glands 32 (four axially extending bores that four threaded holes on the diminished shaft end face in the splined shaft 30 and center have on No. 3 ring flange glands 32 of round boss align) and is connected through bolt; The annular left side of No. 3 ring flange glands 32 is connected with the right side contact of splined shaft connecting flange 31 bellmouths; Realize the location between splined shaft connecting flange 31 and the splined shaft 30, and meet the requirements of pretightning force.The splined section of splined shaft 30 is with reference to the technical requirement manufacturing of THK ball spline product.

The left end of described splined shaft 30 is cylinder bodily form parts; Be evenly equipped with three groups of splines on the cylindrical face of cylinder vertically; Angle between the two adjacent groups spline is 120 degree; The xsect that every group of spline is parallel to each other by two row is that the groove of semicircular perforation is formed, and the right-hand member of splined shaft 30 is diminished shafts, and tapering is 1:10; Two installations that are provided with symmetrically up and down of the taper surface of diminished shaft connect wedge key 33 is connected wedge key 34 with No. 2 wedge key groove No. 1, have on the right side of diminished shaft to be provided with four threaded holes that are used for mounting flange gland 32

Consult Figure 22; Described No. 1 cardan (hookes)universal joint two fork flange c and No. 2 two fork of cardan (hookes)universal joint flange e structures are identical, all are made up of 42, No. 1 cross shaft bearing of 41, No. 2 end face of flange keys of 40, No. 2 universal joint flanges of 39, No. 1 joint spider of 38, No. 1 universal joint flange of No. 1 end face of flange key, No. 2 cross shaft bearings, No. 3 cross shaft bearings and No. 4 cross shaft bearings.Described No. 1 universal joint flange apparatus c and No. 2 universal joint flange apparatus e make with reference to the SWC225BH product.

The symmetrical junction member that said No. 1 joint spider 40 is formed for two axles that intersect vertically, the two ends of every axle are the work axle journal, No. 1 joint spider 40 has four axle journals.The a pair of work axle journal of the symmetry of axis of rotation conllinear has No. 1 cross shaft bearing and No. 2 cross shaft bearings through the locking plate screw suit on No. 1 joint spider 40; The a pair of work axle journal that is set with No. 1 cross shaft bearing and No. 2 cross shaft bearings is installed in No. 1 two joint entry on the universal joint flange 39 to being rotationally connected; Another of the symmetry of axis of rotation conllinear has No. 3 cross shaft bearings and No. 4 cross shaft bearings to the work axle journal through the locking plate screw suit on No. 1 joint spider 40, and a pair of work axle journal that is set with No. 3 cross shaft bearings and No. 4 cross shaft bearings is installed in No. 2 two joint entries on the universal joint flange 41 to being rotationally connected.Described No. 1 end face of flange key 38 is identical with No. 2 end face of flange key 42 structures; No. 1 end face of flange key 38 and No. 2 end face of flange keys 42 are all symmetrical strip structure spare; No. 1 end face of flange key 38 and No. 2 end face of flange keys 42 are installed in the set keyway in No. 1 universal joint flange 39 and No. 2 universal joint flange 41 bottom surfaces, play radially fixing effect.

Power flexible gearing b among the flexible assembly of drive gear D of described power is in transmittance process; Allow the skew of certain axial float and certain angle; Therefore can carry out the flexible transmission of power; And this device realized transmission shafts to stretching motion, in the axial stretching motion, can transmit bigger moment of torsion.

Consult Fig. 4 to Figure 10, described overload protecting mechanism assembly B comprises flange 5, transmission of power flange shaft 6,8, No. 1 flat key 9 of 7, No. 2 flanges of safety coupling and No. 2 flat keys 10 No. 1.

The big end flanges dish of the big end flanges dish of No. 1 flange 5 and transmission of power flange shaft 6 adopts bolt to be connected, and it is the key connection that safety coupling 7 is sleeved on the central shaft of transmission of power flange shaft 6, and No. 2 flange 8 is sleeved on the safety coupling 7.Safety coupling 7 among the overload protecting mechanism assembly B plays the protective effect of power and torque overload in power transmission process; When the driving moment that provides when frequency modulation motor 2 is excessive; Being connected of frequency modulation motor 2 and 4 of PTOs cut off in safety coupling 7 automatic cutouts, protection flange form torque gauge C.

Claims (7)

1. the flexible driving torque pick-up unit of a rail vehicle Power Train Test Bench power; It is characterized in that the flexible driving torque pick-up unit of described rail vehicle Power Train Test Bench power is made up of frequency modulation motor assembly (A), overload protecting mechanism assembly (B), flange form torque gauge (C), the flexible assembly of drive gear (D) of power and horizontal bearing platform (E);

Described frequency modulation motor assembly (A) is made up of inertial flywheel (1), frequency modulation motor (2) and cooling blower (3), and the right-hand member key that inertial flywheel (1) is sleeved on the PTO (4) in the frequency modulation motor (2) connects;

Described overload protecting mechanism assembly (B) comprises No. 1 flange (5), transmission of power flange shaft (6), safety coupling (7), No. 2 flanges (8), No. 1 flat key (9) and No. 2 flat keys (10); No. 1 flange (5) contacts with the big end flanges dish of transmission of power flange shaft (6) and adopts bolt to be connected, the axis of rotation conllinear of No. 1 flange (5) and transmission of power flange shaft (6); The cylinder axle head of transmission of power flange shaft (6) adopts No. 1 flat key (9) and No. 2 flat keys (10) to realize that with safety coupling (7) key is connected, and is connected for interference fit in the central through hole of thin axle head No. 2 flanges of insertion (8) of the outer sleeve of safety coupling (7);

Be evenly equipped with threaded hole on the rotor right ends face in the described flange form torque gauge (C);

The flexible assembly of drive gear of described power (D) is made up of transition axis assembly (a) and power flexible gearing (b), and the right-hand member of the left end of transition axis assembly (a) and power flexible gearing (b) adopts bolt to be fixedly connected with the end face of flange key;

Described frequency modulation motor assembly (A), flange form torque gauge (C) all are bolted on the horizontal bearing platform (E) through the T type with the flexible assembly of drive gear of power (D); The PTO (4) of frequency modulation motor assembly (A) is connected with the right-hand member key of overload protecting mechanism assembly (B); The left end of overload protecting mechanism assembly (B) is connected with the rotor right-hand member bolt of flange form torque gauge (C) through its No. 2 flanges (8), and the rotor left end of flange form torque gauge (C) is connected with No. 4 flanges (23) bolt in the middle transition axis assembly (a) of power flexibility assembly of drive gear (D).

2. according to the flexible driving torque pick-up unit of the described rail vehicle Power Train Test Bench of claim 1 power; It is characterized in that described transition axis assembly (a) comprises No. 1 ring flange gland (11), No. 3 flanges (12), No. 1 round nut (13), No. 1 locking plate (14), No. 1 wedge key (15), No. 2 wedge keys (16), bearing seat (17), transition axis (18), No. 3 wedge keys (19), No. 4 wedge keys (20), No. 2 locking plates (21), No. 2 round nuts (22), No. 4 flanges (23) and No. 2 ring flange glands (24);

Transition axis (18) is packed in the bearing seat (17) for being rotationally connected; No. 1 locking plate (14) and No. 1 round nut (13) are installed in the left end of transition axis (18) successively; No. 2 locking plates (21) and No. 2 round nuts (22) are installed in the right-hand member of transition axis (18) successively; No. 3 flanges (12) adopt No. 1 wedge key (15) and No. 2 wedge keys (16) to be installed on the left end diminished shaft in the transition axis (8); No. 2 flanges (23) adopt No. 3 wedge keys (19) and No. 4 wedge keys (20) to be installed on the right-hand member diminished shaft in the transition axis (18); No. 1 ring flange gland (11) adopts and is bolted on the left side of transition axis (18), and No. 2 ring flange glands (24) adopt and are bolted on the right side of transition axis (18).

3. according to the flexible driving torque pick-up unit of the described rail vehicle Power Train Test Bench of claim 2 power; It is characterized in that; The two ends of described transition axis (18) are left end diminished shaft and right-hand member diminished shaft; The tapering of left end diminished shaft and right-hand member diminished shaft is 1:10; Be respectively arranged with two identical wedge shape keyways of laterally zygomorphic structure on the taper surface of left end diminished shaft and right-hand member diminished shaft; Be the cylindrical multidiameter of the structural symmetry of established angle contact ball bearing (25) between left end diminished shaft and the right-hand member diminished shaft, the inboard of cylindrical multidiameter and left end diminished shaft and right-hand member diminished shaft junction is provided with the external thread that No. 1 round nut (13) and No. 2 round nuts (22) are installed, and cylindrical multidiameter is provided with the groove that externally threaded position is processed with vertically No. 1 locking plate of installation (14) and No. 2 locking plates (21).

4. according to the flexible driving torque pick-up unit of the described rail vehicle Power Train Test Bench of claim 2 power; It is characterized in that described bearing seat (17) comprises bearing spider body (43), four angular contact ball bearing (25), two labyrinth oil seal discs (26) and two labyrinth oil seal bearing (ball) covers (27) that structure is identical that structure is identical that structure is identical;

Described bearing spider body (43) is made up of with the installation base plate the transition axis cylindrical shell that is horizontal, support wallboard; The through hole of transition axis cylindrical shell is the ladder hole of left-right symmetric structure; Be in that transition axis cylindrical shell through hole two ends are outermost to be the cylindrical hole of established angle contact ball bearing (25), labyrinth oil seal disc (26) and labyrinth oil seal bearing (ball) cover (27), the rectangular through hole that is evenly equipped with erection bolt on the base plate is installed;

Four (25) two identical of angular contact ball bearings of structure are one group; Two groups of angular contact ball bearings (15) are installed in the outermost cylindrical hole in the middle transition axis cylindrical shell through hole two ends of bearing spider body (43); The outside that two identical labyrinth oil seal discs (26) of structure are installed in two groups of angular contact ball bearings (15) connects for contact; Two identical labyrinth oil seal bearing (ball) covers (27) of structure adopt bolt to be installed on the middle transition axis cylindrical shell both ends of the surface of bearing spider body (43); And be positioned at the outside of the identical labyrinth oil seal disc (26) of two structures; The flange of labyrinth oil seal bearing (ball) cover (27) one sides that two structures are identical inserts in the outermost cylindrical hole in transition axis cylindrical shell through hole two ends, and the central through hole of the labyrinth oil seal bearing (ball) cover (27) that two structures are identical simultaneously is sleeved on the interior food tray ring body of the identical labyrinth oil seal disc (26) of two structures.

5. according to the flexible driving torque pick-up unit of the described rail vehicle Power Train Test Bench of claim 4 power; It is characterized in that; Described labyrinth oil seal disc (26) is the stepped appearance circular ring spare that interior torus and outer toroid cone are formed; The center of labyrinth oil seal disc (26) is provided with through hole vertically; The cylindrical anchor ring of interior torus one end is provided with three labyrinth annular grooves, the outer toroid cone be provided with the labyrinth oil seal bearing (ball) cover on the equipped disc location and installation battle pin (44) and the drainage conical surface (45) of location and installation groove (46);

Described labyrinth oil seal bearing (ball) cover (27) is the annular disk-like structural member; Its center is provided with through hole vertically; The left side of through hole is provided with disc location and installation groove (46); The inwall of through hole be provided with three with labyrinth oil seal disc (16) on the inwall labyrinth annular groove that matches of three labyrinth annular grooves, the inwall annular groove is provided with spill port.

6. according to the flexible driving torque pick-up unit of the described rail vehicle Power Train Test Bench of claim 1 power; It is characterized in that described power flexible gearing (b) is made up of with No. 2 universal joint two fork flanges (e) No. 1 two fork of universal joint flange (c), ball spline formula transmission shaft (d);

Described ball spline formula transmission shaft (d) comprises that splined sleeve (28), spline housing (29), splined shaft (30), splined shaft connecting flange (31), No. 3 ring flange glands (32), No. 1 connection wedge key (33), No. 2 connection wedge keys (34), 6 row splined shaft rolling steel balls (35), No. 1 connection flat keys (36) are connected flat key (37) with No. 2;

Splined sleeve (28) is sleeved on spline housing (29) and goes up and adopt No. 1 connection flat key (36) to be connected flat key (37) connection with No. 2; The spline housing (29) that is set with splined sleeve (28) is sleeved on the left end of splined shaft (30); 6 row splined shaft rolling steel balls (35) are packed in 6 passages that are made up of spline housing (29) and splined shaft (30); Splined shaft connecting flange (31) is sleeved on the diminished shaft of splined shaft (30) right-hand member and adopts and connects wedge key (33) for No. 1 and be connected wedge key (34) connection with No. 2; No. 3 ring flange glands (32) are connected through bolt on the right side of diminished shaft in the splined shaft (30), and the annular left side of No. 3 ring flange glands (32) is connected with the right side contact of splined shaft connecting flange (31) bellmouth;

No. 1 universal joint two fork flange (c) is identical with No. 2 two fork of universal joint flange (e) structures, all is made up of No. 1 end face of flange key (38), No. 1 universal joint flange (39), No. 1 joint spider (40), No. 2 universal joint flanges (41), No. 2 end face of flange keys (42), No. 1 cross shaft bearing, No. 2 cross shaft bearings, No. 3 cross shaft bearings and No. 4 cross shaft bearings;

The symmetrical junction member that said No. 1 joint spider (40) is formed for two axles that intersect vertically; The two ends of every axle are the work axle journal; The a pair of work axle journal that No. 1 joint spider (40) is gone up the axis of rotation conllinear is set with No. 1 cross shaft bearing and No. 2 cross shaft bearings; The a pair of work axle journal that is set with No. 1 cross shaft bearing and No. 2 cross shaft bearings is installed in the joint of two on No. 1 universal joint flange (39) entry to being rotationally connected; Another of the last axis of rotation conllinear of No. 1 joint spider (40) is set with No. 3 cross shaft bearings and No. 4 cross shaft bearings to the work axle journal, and a pair of work axle journal that is set with No. 3 cross shaft bearings and No. 4 cross shaft bearings is installed in the joint of two on No. 2 universal joint flanges (41) entry to being rotationally connected;

Described No. 1 end face of flange key (38) is all the identical strip structure spare of structure with No. 2 end face of flange keys (42), and No. 1 end face of flange key (38) is installed in the keyway on No. 1 universal joint flange (39) and No. 2 universal joint flanges (41) bottom surface with No. 2 end face of flange keys (42).

7. according to the flexible driving torque pick-up unit of the described rail vehicle Power Train Test Bench of claim 6 power; It is characterized in that; The left end of described splined shaft (30) is a barrel portion; Be evenly equipped with three groups of splines on the cylindrical face of cylinder vertically, the angle between the two adjacent groups spline is 120 degree, and every group of spline is made up of the groove of the semicircular perforation that two row are parallel to each other; The right-hand member of splined shaft (30) is a diminished shaft; Tapering is 1:10, is provided with two on the taper surface of diminished shaft symmetrically No. 1 connection wedge key (33) is connected wedge key (34) with No. 2 wedge key groove is installed, and the threaded hole that is provided with four mounting flange glands (32) is arranged on the right side of diminished shaft.

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