CN210923064U

CN210923064U - Train gear box is vehicle axle strutting arrangement for no-load test bench and test bench thereof

Info

Publication number: CN210923064U
Application number: CN201922390434.8U
Authority: CN
Inventors: 马玉强; 陈琪; 赵璐; 林新海; 李枫; 杨帆
Original assignee: CRRC Qishuyan Institute Co Ltd
Current assignee: CRRC Qishuyan Institute Co Ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-07-03
Anticipated expiration: 2029-12-26

Abstract

The utility model discloses a train gear box no-load test stand vehicle axle supporting device and a test stand thereof, which comprises a test stand base, and an axle supporting device, a hanging fixing device, a power driving adjusting device and a temperature vibration testing device which are arranged on the base; the axle supporting device is provided with an integral bearing box, a cylindrical roller bearing is adopted for bearing and supporting, and a deep groove ball bearing is used for limiting and fixing; the hanging and fixing device comprises a slidable base, a supporting plate, a base plate and a circular support column welded on the base plate, and the position of the hanging and fixing device is adjustable; the power driving adjusting device is used for adjusting the position of the power device, and the power device is used for providing power for the rotation of the gear box; the temperature vibration testing device is used for monitoring the temperature and the vibration characteristic of a bearing of the gearbox; the device is simple to operate, convenient to assemble and disassemble, high in assembling efficiency and high in test safety and reliability, can meet the requirements of no-load running-in tests of different train gear boxes at different levels of rotating speeds, and can perform high-rotating-speed running-in tests of axle gear boxes under the condition of assembling wheel sets.

Description

Train gear box is vehicle axle strutting arrangement for no-load test bench and test bench thereof

Technical Field

The utility model relates to a no-load test platform of gear box for rail transit vehicle especially relates to a train gear box is vehicle shaft strutting arrangement and test bench for no-load test platform, belongs to mechanical engineering technical field.

Background

The train gearbox is one of key parts of a power bogie in a rail transit vehicle, and the performance and the quality of the train gearbox directly influence the working performance and the service life of a transmission system. After the gear box is assembled, a running-in test is required, namely, a certain power is applied from the input end of the gear box, and the gear box is subjected to temperature and vibration tests at various levels of rotating speeds so as to test whether a lubricating and sealing system is reliable or not, whether bearing temperature rise and gear meshing are normal or not and simultaneously enable lubricating oil to be fully adhered.

The conventional test bed axle supporting device has multiple types, firstly, a double-tip device is adopted to tightly support an axle from two ends, the scheme has a simple structure and is convenient to assemble, the double-tip device is only suitable for running-in tests of urban rail subway gear boxes, the risk of overlarge vibration exists in the tests, and the requirements of high-rotating-speed tests cannot be met; secondly, the axle is clamped by the double-row self-aligning roller bearing and the taper sleeve, and the assembly and disassembly process is complicated; thirdly, the clamping installation is carried out by adopting a mode of an expansion sleeve, the disassembly and the assembly are inconvenient, and the surface of the axle is easily scratched in the test process. In addition, the self-centering positioning and clamping device developed by Jilin university and having the patent number of 201610005258.X has the risk of instability under high-speed conditions due to uneven stress of each rolling wheel in the running process of the axle.

The existing gear box running-in test bed mainly has the following structural types: one is that both ends of the axle are supported and use the device of the double tip to push up the axle tightly, the electrical machinery connects the pinion shaft of the gear box to carry on the running-in test through the crowned tooth coupling, this kind of double tip way is only suitable for the low rotational speed test, and when adopting the connection of the crowned tooth coupling, the centering requires highly, assemble and disassemble fussy; the other type is that the two ends of the axle are respectively clamped and supported by three-point rollers, the mode has the risk of scratching the axle and is also only suitable for low-rotation-speed tests, and the motor is directly connected with the pinion shaft of the gear box for driving and is required to be a high-rotation-speed motor; the other is a double-bearing positioning and clamping device mentioned in the patent number 201620008073.X, a pair of double-row self-aligning roller bearings are adopted to support an axle, the structure is complex, the axle support adopts the double-row self-aligning roller bearings and a taper sleeve to clamp the axle, the axle is limited by the limit rotating speed and the larger angle compensation of the self-aligning roller bearings, the larger vibration is caused under the high rotating speed, and the evaluation of the vibration grade of the gearbox is seriously influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a solve the unloaded running-in test bench of present gear box and dismantle that the installation is numerous and diverse, easily damage the axletree axle journal, be difficult to high rotational speed test and can't carry out a series of technical problems such as the experiment of axletree gear box assembly wheel to time for the train gearbox axle supporting device and a safe and stable reliable high rotational speed unloaded running-in test bench for the track traffic gear box.

In order to achieve the above purpose, the utility model adopts the following scheme: a shaft supporting device for a train gearbox no-load test stand comprises a base and a switching platform arranged on the base, wherein a shaft box body used for supporting an axle is arranged on the switching platform, a front-back through installation cavity is arranged on the shaft box body, a positioning ring, a deep groove ball bearing, a bearing adapter seat, an axle side end cover and an axle protective sleeve are sequentially arranged in the installation cavity from inside to outside along the axial direction, a cylindrical roller bearing is sleeved in the bearing adapter seat, and the axle protective sleeve is inserted on the deep groove ball bearing and the cylindrical roller bearing through the axle side end cover; and the other end of the axle box body opposite to the axle side end cover is provided with a rear side end cover.

Furthermore, a balancing weight is installed above the axle box body through a bolt, and a lifting threaded hole for installing a lifting ring is formed in the balancing weight and used for adjusting the gravity center position of the axle box assembly and ensuring that the axle box is in a horizontal state when lifted.

Further, the axle box body is fixedly installed on the switching platform through rotating the bolt, trapezoidal locating pieces used for supporting and locating are respectively attached to two sides of the axle box body, the trapezoidal locating pieces are fixed on the switching platform through screws, a locating key groove is formed between the upper surface of the switching platform and the bottom surface of the axle box body, guiding and locating are carried out through a guide key, and centering precision of the supporting devices at two ends of the axle of the gear box after repeated assembly and disassembly can be guaranteed.

Furthermore, the axle box body is of a cast integral cavity structure, the lower part of the inner wall of the axle box body is provided with an oil pool, and the upper part of the inner wall of the axle box body is provided with an oil filling port, so that the oil collecting volume can be increased, and the lubricating and cooling effects can be enhanced.

Furthermore, be equipped with rotation bolt and locating pin on the switching platform, the locating pin passes the afterbody round hole of rotation bolt, makes rotation bolt rotate around the locating pin axial and is used for the installation of axle box body fixed, and it is fixed to adjust the installation that can be used to the axle box body to the relevant position when rotating the bolt.

Further, the frame oil seal is installed to axletree side end cover, the frame oil seal lip with the light contact of axletree protective sheath outer cylinder face plays the effect of sealed lubricating oil.

Further, axletree protective sheath hole opening is equipped with the inclination chamfer, plays direction and axial positioning effect when the suit is to the axletree, the excircle also be equipped with the ladder step that the skeleton oil blanket matches plays the axial positioning effect when pushing the axle box.

Further, the base is the splayed, the base with the switching platform passes through bolted connection, be equipped with first slide rail on the base, be equipped with first ball on the first slide rail, the tip of first ball is equipped with first hand wheel, makes the base remove through rotatory hand wheel drive first ball, realizes that both sides axletree strutting arrangement's distance is adjustable, satisfies the installation of different length axletree gear boxes.

Another object of the utility model is to provide a train gear box no-load test platform, this test bench include the test bench base, install the gear box that is used for installing the test axletree on the test bench base, the gear box includes input and output, its characterized in that: the two ends of an axle of the gear box are respectively and fixedly provided with an axle supporting device arranged on the test bed base, the front end of the gear box is supported and fixed by a hanging fixing device arranged on the test bed base, the gear box is provided with a temperature vibration testing device, and the input end of the gear box is connected with a driving device; the hanging and fixing device comprises a slidable base, a support column is arranged on the slidable base, a support plate for supporting the gear box is arranged at the upper part of the support column, and the height of the support plate is adjustable; the temperature vibration testing device comprises a temperature sensor arranged on a bearing seat of the gearbox and vibration speed sensors respectively arranged at the input end and the output end of the gearbox and is used for monitoring the temperature and the vibration characteristics of a bearing of the gearbox; the driving device comprises an adjusting device arranged on the test bed base, a power device in transmission connection with the input end of the gear box is arranged on the adjusting device, the adjusting device is used for adjusting the position of the power device, and the power device is used for providing power for rotation of the gear box.

Further, hang the base that can slide among the fixing device and include chassis and the circular support post of welding on the chassis, the circular support post center is equipped with the screw hole, the support column is for setting up screw rod in the screw hole, the layer board that is used for supporting the gear box is established to screw rod upper portion cover, is equipped with lock nut on the screw rod of layer board top, screw in and the back-out through the screw rod, and the adjustment support height satisfies the installation of different position gear boxes of hanging.

Furthermore, a temperature sensor and a vibration speed sensor in the temperature vibration testing device are both connected with the signal acquisition module, so that the abnormal temperature rise and vibration in the testing process can be monitored, and the temperature and vibration characteristics of the gear box can be evaluated.

Further, adjusting device includes the bottom plate of fixed mounting on the test bench base, be equipped with the second slide rail on the bottom plate, be equipped with the flat board on the second slide rail, go up dull and stereotyped bottom and be equipped with the direction boss, be equipped with second ball between bottom plate and the last flat board, the tip of second ball is equipped with the second hand wheel, go up the fixed power device that sets up on the flat board, drive the motion of last flat board through rotatory hand wheel, can effectively adjust inverter motor fore-and-aft direction's position, play the effect of tensioning belt, the belt that relaxes when dismantling when the equipment is experimental simultaneously to make things convenient for the dismouting of gear box.

Further, power device includes inverter motor, the cover is equipped with big band pulley on inverter motor's the main shaft, big band pulley passes through the belt and is connected with the epaxial little band pulley of gear box input pinion, big band pulley with the belt drive ratio of little band pulley is 2~3, drives with standard type 2 level inverter motor like this, can reach the experimental demand of gear box input 6000 rotations after the acceleration, has reduced the requirement to the motor.

The utility model has the advantages that: only the axle shaft neck is sleeved with the axle protective sleeve, and the axle protective sleeve can directly fall on the switching platform after being horizontally pushed into the axle box body, the rotating bolt is adjusted, the nut is screwed, and the axle gear box is supported and fixed; the bearing support of the cylindrical roller bearing is adopted, the deep groove ball bearing is limited and fixed, the mounting precision is high, the bearing capacity is strong, the device is stable and reliable in operation, and the running-in test of the axle gear box under the condition of assembling wheel pairs can be carried out while the high-speed running test is carried out; by adopting the axle protective sleeve and the bearing adapter seat, the sizes of the axle protective sleeve and the bearing adapter seat can be changed to adapt to axle journals with different specifications, so that the requirements of no-load running-in tests of different axle gear boxes under different rotating speed conditions can be met.

Drawings

FIG. 1 is a front view of the axle support apparatus;

FIG. 2 is a side view of the axle supporting device;

FIG. 3 is a cross-sectional view of the axle bearing arrangement;

FIG. 4 is an exploded view of the axle support apparatus;

FIG. 5 is a schematic structural view of the axle protective sleeve;

FIG. 6 is a front view of a no-load test stand for a train gearbox;

FIG. 7 is a side view of a no-load test stand of a train gearbox;

FIG. 8 is a top view of a no-load test stand of a train gearbox;

FIG. 9 is a front view of the adjustment device;

FIG. 10 is a side view of the adjustment device;

FIG. 11 is a top view of the adjustment device;

FIG. 12 is a schematic view of the hanging fixture.

Labeled as: 1. the device comprises a base, 2, a switching platform, 3, a trapezoid positioning block, 4, an axle box body, 5, a balancing weight, 6, a positioning pin, 7, a guide key, 8, a rotating bolt, 9, an axle protective sleeve, 10, a framework oil seal, 11, an axle side end cover, 12, a cylindrical roller bearing, 13, a bearing adapter seat, 14, a deep groove ball bearing, 15, a positioning ring, 16, a rear end cover, 17, a second ball screw, 18, a second hand wheel, 19, an upper flat plate, 20, a bottom plate, 21, a second sliding rail, 22, a test bed base, 23, a hanging fixing device, 24, a variable frequency motor, 25, an adjusting device, 26, a large belt wheel, 27, a small belt wheel, 28, an axle supporting device, 29, a slidable base, 30, a screw rod, 31, a supporting plate, 32 and a locking nut.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Embodiment 1, refer to fig. 1-5, this embodiment provides a shaft supporting device for a train gearbox no-load test bed, which includes a splayed base 1 and a transfer platform 2 disposed on the base 1, the base 1 is connected with the transfer platform 2 through a high-strength hexagon screw, a shaft box 4 for supporting a train shaft is disposed on the transfer platform 2 through a rotation bolt 8, the shaft box 4 is a cast integral cavity structure, an oil sump is disposed at the lower part of the inner wall of the shaft box 4, an oil filling port is disposed above the oil sump, a counterweight 5 is mounted above the shaft box 4 through a bolt, a lifting threaded hole for mounting a lifting ring is disposed on the counterweight 5 for adjusting the gravity center position of the shaft box assembly, so as to ensure that the axle box is in a horizontal state when lifted, trapezoidal positioning blocks 3 for supporting and positioning are respectively attached to both sides of the shaft box 4, and the trapezoidal positioning blocks, a positioning key groove is arranged between the upper surface of the switching platform 2 and the bottom surface of the axle box body 4, guiding positioning is carried out through a guiding key 7, a rotating bolt 8 and a positioning pin 6 are arranged on the switching platform 2, the positioning pin 6 penetrates through a tail round hole of the rotating bolt 8, so that the rotating bolt 8 rotates around the positioning pin in the axial direction for installing and fixing the axle box body 4, a positioning ring 15, a deep groove ball bearing 14, a bearing adapting seat 13, an axle side end cover 11 and an axle protective sleeve 9 are sequentially arranged in the axle box body 4 from inside to outside in the axial direction, a cylindrical roller bearing 12 is sleeved in the bearing adapting seat 13, the axle protective sleeve 9 is sleeved on the deep groove ball bearing 14 and the cylindrical roller bearing 12 through the axle side end cover 11, a rear side end cover 16 is arranged at the other end of the axle box body 4 opposite to the axle side end cover 11, a framework oil seal 10 is, the inner hole opening of the axle protective sleeve 9 is provided with an inclination chamfer and a step, which play a role in guiding and axial positioning when the axle protective sleeve is sleeved on an axle, and the excircle is also provided with a step which plays a role in axial positioning when the axle box body 4 is pushed.

The axle protective sleeve 9 is a cylindrical thin-wall alloy steel part and can be adapted to axle journals with different sizes, and after being sleeved on the axle journals at two ends, the bearing box can be directly pushed into the position of the axle journal along the horizontal direction, so that the surface of the axle can be effectively protected, the inner diameter size of the cylindrical roller bearing 12 is matched, and the bearing can serve as a bearing inner ring; only need suit axletree protective sheath 9 in axletree axle journal department, the level pushes axle box 4 back again, alright directly fall on switching platform 2, and the support of adjusting rotation bolt 8, tightening nut and accomplishing the axletree gear box is fixed. When the bearing box is detached, the bearing box is pushed away, and the axle protective sleeve 9 is taken down.

Embodiment 2, refer to fig. 6 to 12, which provide an unloaded test bed for a train gearbox, the test bed includes a test bed base 22, a gearbox is disposed on the test bed base 22 and used for mounting an axle, the gearbox includes an input end and an output end, axle supporting devices 28 are respectively and fixedly mounted on the test bed base 22 at two ends of the gearbox and used for supporting the axle, the gearbox is supported and fixed by a hanging fixing device 23 disposed on the test bed base, a temperature vibration testing device is disposed on the gearbox, and the input end of the gearbox is connected to a driving device; the hanging and fixing device 23 comprises a slidable base 29, the slidable base 29 comprises a chassis and a circular support column welded on the chassis, a threaded hole is formed in the center of the circular support column, a screw rod 30 is arranged in the threaded hole, a supporting plate 31 for supporting the gear box is sleeved on the upper portion of the screw rod 30, and a locking nut 32 is arranged on the screw rod above the supporting plate 31; the temperature vibration testing device comprises a temperature sensor arranged on a bearing seat of the gearbox and vibration speed sensors respectively arranged at the input end and the output end of the gearbox and is used for monitoring the temperature and the vibration characteristics of a bearing of the gearbox; drive arrangement is including setting up adjusting device 25 on the test bench base, adjusting device 25 includes bottom plate 20 of fixed mounting on test bench base 22, be equipped with second slide rail 21 on the bottom plate 20, be equipped with flat board 19 on the second slide rail 21, the bottom of going up flat board 19 is equipped with the direction boss, be equipped with second ball 17 between bottom plate 20 and the last flat board 19, the tip of second ball 17 is equipped with second hand wheel 18, go up the fixed power device that sets up on flat board 19, power device includes inverter motor 24, the cover is equipped with big band pulley 26 on inverter motor 24's the main shaft, big band pulley 26 passes through the belt and is connected with the epaxial little band pulley 27 of gear box input pinion.

In the embodiment, a PT100 temperature sensor is adsorbed on each bearing seat of the gearbox, a vibration speed sensor is respectively arranged on the bearing seats at the input end and the output end of the gearbox, the sensors are connected to an acquisition box module for signal output, the temperature and the vibration characteristic of the bearing of the gearbox can be recorded in real time in the test process, and the abnormal vibration is monitored in the test process; the large belt wheel 26 is made of gray iron and is arranged on a main shaft of the variable frequency motor 24 in an interference hot-fitting mode, the small belt wheel 27 is made of nylon materials, an inner hole of the small belt wheel 27 is a taper hole, the small belt wheel 27 is pressed on the small gear shaft through a gland by means of a central threaded hole of the small gear shaft on the input side of the gear box, the large belt wheel 26 and the small belt wheel 27 are connected and driven through 2 SPA type narrow V belts, and the belt transmission ratio is 2-3; the base plate 20 of the base 1 position adjusting and adjusting device 25 of the axle supporting device 28 is constructed in the same manner as the upper plate 19.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a train gear box is axle strutting arrangement for no-load test platform, includes base (1) and switching platform (2) of setting on base (1), its characterized in that: the transfer platform (2) is provided with a shaft box body (4) for supporting an axle, the shaft box body (4) is provided with a mounting cavity which is through from front to back, a positioning ring (15), a deep groove ball bearing (14), a bearing adapter seat (13), an axle side end cover (11) and an axle protective sleeve (9) are sequentially arranged in the mounting cavity from inside to outside along the axial direction, a cylindrical roller bearing (12) is sleeved in the bearing adapter seat (13), and the axle protective sleeve (9) is inserted in the deep groove ball bearing (14) and the cylindrical roller bearing (12) through the axle side end cover (11); the other end of the axle box body (4) opposite to the axle side end cover (11) is provided with a rear side end cover (16).

2. The axle supporting device for the no-load test bed of the train gearbox as recited in claim 1, wherein: a balancing weight (5) is fixedly mounted above the shaft box body (4), and a lifting threaded hole for mounting a lifting ring is formed in the balancing weight (5).

3. The axle supporting device for the no-load test bed of the train gearbox as recited in claim 1, wherein: the shaft box body (4) is fixedly installed on the switching platform through a rotating bolt (8), trapezoidal positioning blocks (3) used for supporting and positioning are respectively attached to two sides of the shaft box body (4), and the trapezoidal positioning blocks (3) are fixed on the switching platform (2) through screws.

4. The axle supporting device for the no-load test bed of the train gearbox as claimed in claim 3, wherein: the shaft box body (4) is of a cast integral cavity structure, an oil pool is arranged at the lower part of the cavity structure of the shaft box body (4), and an oil filling port is arranged above the cavity structure.

5. The axle supporting device for the no-load test bed of the train gearbox as claimed in claim 3, wherein: a positioning key groove is formed between the upper surface of the switching platform (2) and the bottom surface of the shaft box body (4), and guiding positioning is carried out through a guiding key (7).

6. The axle supporting device for the no-load test bed of the train gearbox as claimed in claim 3, wherein: be equipped with on switching platform (2) and rotate bolt and locating pin (6), locating pin (6) pass the afterbody round hole of rotating bolt (8), make and rotate the bolt and wind the locating pin axial rotation and be used for the installation of countershaft box (4) fixed.

7. The axle supporting device for the no-load test bed of the train gearbox as recited in claim 6, wherein: a framework oil seal (10) is installed on the axle side end cover (11), and a lip of the framework oil seal (10) is in light contact with the outer cylindrical surface of the axle protective sleeve (9).

8. The axle support device for the no-load test bed of the train gearbox as recited in claim 7, wherein: the inner hole opening of the axle protective sleeve (9) is provided with an inclination chamfer, and the outer circle is also provided with a step matched with the framework oil seal (10).

9. The axle supporting device for the no-load test bed of the train gearbox as recited in claim 1, wherein: the base (1) is splayed, and the base (1) is connected with the switching platform (2) through screws.

10. The axle supporting device for the no-load test bed of the train gearbox as recited in claim 9, wherein: the base (1) is provided with a first slide rail, the first slide rail is provided with a first ball screw, and the end part of the first ball screw is provided with a first hand wheel.

11. The utility model provides a train gear box no-load test platform, includes test bench base (22), install the gear box that is used for installing the test axletree on test bench base (22), the gear box includes input and output, its characterized in that: the two ends of an axle of the gear box are respectively and fixedly provided with an axle supporting device (28) arranged on a test bed base (22), the front end of the gear box is supported and fixed by a hanging fixing device (23) arranged on the test bed base, the gear box is provided with a temperature vibration testing device, and the input end of the gear box is connected with a driving device;

the hanging and fixing device (23) comprises a slidable base (29), a supporting column is arranged on the slidable base (29), a supporting plate (31) used for supporting the gearbox is arranged on the upper portion of the supporting column, and the height of the supporting plate (31) is adjustable;

the temperature vibration testing device comprises a temperature sensor arranged on a bearing seat of the gearbox and vibration speed sensors respectively arranged at the input end and the output end of the gearbox and is used for monitoring the temperature and the vibration characteristics of a bearing of the gearbox;

the driving device comprises an adjusting device (25) arranged on the test bed base, a power device in transmission connection with the input end of the gear box is arranged on the adjusting device (25), the adjusting device (25) is used for adjusting the position of the power device, and the power device is used for providing power for rotation of the gear box.

12. The train gearbox no-load test stand of claim 11, wherein: the slidable base (29) in the hanging and fixing device (23) comprises a chassis and a circular support column welded on the chassis, a threaded hole is formed in the center of the circular support column, a screw rod (30) in the threaded hole is arranged on the support column, a support plate (31) used for supporting the gear box is sleeved on the upper portion of the screw rod (30), and a locking nut (32) is arranged on the screw rod above the support plate.

13. The train gearbox no-load test stand of claim 11, wherein: and a temperature sensor and a vibration speed sensor in the temperature vibration testing device are both connected with a signal acquisition module.

14. The train gearbox no-load test stand of claim 11, wherein: adjusting device (25) are including bottom plate (20) of fixed mounting on test bench base (22), be equipped with second slide rail (21) on bottom plate (20), be equipped with on the second slide rail and go up dull and stereotyped (19), the bottom of going up dull and stereotyped (19) is equipped with the direction boss, is equipped with second ball (17) between bottom plate (20) and last dull and stereotyped (19), the tip of second ball (17) is equipped with second hand wheel (18), go up fixed mounting power device on dull and stereotyped (19).

15. The train gearbox no-load test stand of claim 14, wherein: the power device comprises a variable frequency motor (24), a main shaft of the variable frequency motor (24) is sleeved with a large belt wheel (26), and the large belt wheel (26) is connected with a small belt wheel (27) on a small gear shaft at the input end of the gear box through a belt.

16. The train gearbox no-load test stand of claim 15, wherein: the belt transmission ratio of the large belt wheel (26) to the small belt wheel (27) is 2-3.