CN106290573B

CN106290573B - Bearing roller for train wheel is detected a flaw

Info

Publication number: CN106290573B
Application number: CN201610921394.3A
Authority: CN
Inventors: 许杰峰; 刘爱兵; 王洋; 耿培涛; 程旭辉; 胡晓丽; 毛庆云; 龚胜辉; 王鑫
Original assignee: Maanshan Iron and Steel Co Ltd
Current assignee: Maanshan Iron and Steel Co Ltd
Priority date: 2016-10-21
Filing date: 2016-10-21
Publication date: 2023-03-31
Anticipated expiration: 2036-10-21
Also published as: CN106290573A

Abstract

A roller for flaw detection of train wheels comprises an annular roller core, an annular roller ring and a fastening piece; the roll collar is divided into an upper roll collar and a lower roll collar, and an annular V-shaped groove is formed in the outer circular surface of the roll collar; the roller core comprises a hub, a spoke plate and a rim, and a positioning groove is processed on the outer circular surface of the rim; the inner ring of the roll collar is provided with an annular boss, the inner circular surface of the roll collar is contacted with the outer circular surface of the wheel rim of the roll core, a plurality of through holes are uniformly formed in the circumferential direction of the annular part of the annular boss inserted into the positioning groove, a counter bore is processed on one outer side of each through hole, and the cylindrical head of the hexagon socket screw sinks into the counter bore. The invention can meet the flaw detection requirements of train wheels with various specifications, adopts a split detachable structure, has simple and compact structure, is convenient to install, does not need to be integrally replaced during maintenance, reduces the maintenance difficulty and saves the maintenance time; adopt different materials, under the circumstances of guaranteeing bearing roller intensity, have certain assurance to wheel surface quality, reinforcing wheel product market competition.

Description

Supporting roller for flaw detection of train wheels

Technical Field

The invention relates to a carrier roller for flaw detection of internal defects of train wheels, and belongs to the technical field of part detection mechanical equipment. .

Background

In order to avoid the finished train wheel from leaving the factory due to the defect of internal standard exceeding, the train wheels are detected by a nondestructive detection method of ultrasonic flaw detection before delivery. At present, the on-line flaw detection of train wheels adopts contact flaw detection, water is used as coupling agent, and the wheels are vertically placed.

Before exploration, the train wheels are positioned on a wheel entering position track, a transport trolley positioned above the flaw detector moves above the train wheels, the position of the hole center of the train wheels is adjusted to be positioned at the centers of two pressing rollers of the transport trolley, the transport trolley is descended, the two pressing rollers on the transport trolley clamp the wheel flange above the train wheels, a stop arm of a catch wheel is put down, and the transport trolley sends the train wheels to an inspection station along the track. At the moment, the height of two radial compression rollers on the radial frame is adjusted to be higher than the rim of the train wheel by a certain height, the two radial compression rollers extend outwards and then press the rims on the upper parts of two sides of the hole center of the train wheel downwards, the transport trolley is lifted to enable the trolley compression rollers to loosen the train wheel, and only the radial compression rollers press the train wheel. A lifting table for lifting the carrier roller is arranged, the two carrier rollers support the wheel from the lower wheel rims at the two sides of the hole center of the train wheel, about a certain height from the roller surface. Under the clamping of the carrier roller and the radial compression roller, the detected wheel is driven to rotate stably by the rotation of the carrier roller so as to realize the flaw detection of the relevant part of the train wheel, when the flaw detection is finished, the carrier roller and the radial compression roller stop running and loosen the train wheel, and the train wheel is clamped by two compression rollers of the transport trolley and is transported to a wheel outlet position, thereby realizing a working cycle.

At present, a carrier roller is made of an integral steel casting and is in a ring shape, a V-shaped groove is formed in the outer circular surface of the carrier roller, two sides of the V-shaped groove are in contact with the rim of a train wheel and drive the train wheel to rotate by friction force, the carrier roller is connected with a carrier roller shaft in a matched mode through an expansion sleeve, and input torque of the carrier roller shaft comes from a motor speed reducer part connected with the carrier roller shaft.

In order to enable the carrier roller to be suitable for driving train wheels with various specifications (phi 600-phi 1250), the carrier roller is large in size (the diameter is about phi 500, and the width of the roller is approximate 71 mm), once the V-shaped groove is abraded, the top of the rim of the train wheel with the relatively narrow rim is in contact with the bottom of the V-shaped groove, so that the phenomenon of shaking or even slipping occurs in the flaw detection process of the train wheel, the carrier roller needs to be replaced, once the carrier roller needs to be replaced, the carrier roller needs to be detached together with a carrier roller shaft, and the carrier roller is troublesome to replace, inconvenient to assemble and disassemble, time-consuming and labor-consuming. In addition, because the flaw detection adopts water as the coupling agent, the cast steel carrier roller is easy to rust, and the cast steel carrier roller has certain hardness, influences the appearance quality with the train wheel contact department.

Disclosure of Invention

The invention aims to solve the problems, overcome the defects and shortcomings of the conventional support roller for train wheel flaw detection, and provide the support roller for train wheel flaw detection, which is detachable in a split manner, can meet the flaw detection requirements of train wheels of various specifications, adopts a split detachable structure, is simple and compact in structure, is convenient to mount, does not need to be integrally replaced during maintenance, reduces the maintenance difficulty, and saves the maintenance time. The bearing roller adopts different materials, under the circumstances of guaranteeing bearing roller intensity, has certain assurance to wheel surface quality, reinforcing wheel product market competition.

Technical scheme of the invention this is achieved: the utility model provides a train wheel is detected a flaw and is used bearing roller which its characteristics are: comprises an annular roller core, an annular roller ring the roll core and the roll collar are connected through a fastener inner hexagon screw, a spring washer and a hexagon nut; the roll collar is divided into an upper roll collar at the upper half part and a lower roll collar at the lower half part, and an annular V-shaped groove is formed in the outer circular surface of the roll collar; the roller core comprises an annular hub of an inner ring, an annular spoke plate of a middle ring and an annular rim of an outer ring, and a circle of annular positioning groove is processed on the outer circumferential surface of the rim; the inner ring of the roll collar is provided with an annular boss, the annular boss is inserted into a positioning groove of a rim, the inner circular surface of the roll collar is contacted with the outer circular surface of the rim of the roll core, a plurality of through holes are uniformly formed in the circumferential direction of the annular part of the annular boss inserted into the positioning groove, a counter bore is processed in one outer side of each through hole, the cylindrical head of an inner hexagon screw is sunk into the counter bore, and the inner hexagon screw penetrates through the through holes to fasten the roll collar and the roll core together by using a spring washer and a hexagon nut.

Furthermore, a U-shaped groove is formed at the bottom of the V-shaped groove.

Furthermore, a plurality of transverse grooves are uniformly formed in the two sides of the V-shaped groove along the axial direction.

Furthermore, a plurality of lightening holes are formed in the spoke plate.

Further, in the above-mentioned case, the number of the through holes is 18.

Furthermore, the roller ring is made of tin bronze.

Furthermore, the inner hexagon screw, the spring washer and the hexagon nut are all made of stainless steel materials.

When the V-shaped groove at the contact part of the carrier roller and the wheel rim is seriously abraded, the carrier roller and the carrier roller shaft connecting body are not required to be wholly detached for replacing the whole carrier roller, only the roller ring is replaced, and when the roller ring is replaced, only the fastening piece for connecting the roller core and the roller ring is detached, so that the online implementation is realized, the maintenance difficulty is reduced, and the maintenance time is saved. Because the carrier roller adopts different materials, the surface quality of the wheel is ensured to a certain extent under the condition of ensuring the strength of the carrier roller, and the market competitiveness of wheel products is improved.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

FIG. 3 is a front view of the roll core.

FIG. 4 is a roll core a cross-sectional view.

Fig. 5 is a front view of the upper roller ring.

Figure 6 is a cross-sectional view of the upper roller ring.

In the figure: 1. a roll core; 2. an upper roll collar; 3. a lower roll collar; 4. a socket head cap screw; 5. a spring washer; 6. a hexagonal nut; 7. a hub; 8. a web; 9. a rim; 10. a positioning groove; 11. a counter bore; 12. a spoke hole; 13. a hub bore; 14. a boss; 15. a through hole; 16.V-shaped grooves; 17.U-shaped groove; 18. a transverse slot.

Detailed Description

As seen in FIG. 1, the invention comprises a roller core 1, a roller ring, a fastener inner hexagon screw 4 for connecting the roller core 1 and the roller ring, a spring washer 5 and a hexagon nut 6. With endless roller rings divided into upper parts an upper roller ring 2 and a lower roller ring 3 in the lower half.

As can be seen from fig. 2 to 6, the roll core 1 is not integrally formed into a circular ring shape unlike the conventional roll core, and includes three portions of a hub 7, a web 8 and a rim 9, each of which is an annular body. The hub hole 13 of the roller core 1 is connected with the roller carrier shaft by the existing expansion sleeve to transmit torque. The middle part of the roller core 1 adopts a structural form of a radial plate 8, the weight of the roller core 1 is reduced, in addition, a plurality of lightening holes are processed on the radial plate 8 of the roller core 1, this also reduces the weight of the core and thus the idler. A circle of annular positioning grooves 10 are formed in the periphery of the outer circular surface of a rim 9 of the roller core 1 and used for inserting annular bosses 14 arranged on the inner sides of roller rings (the upper roller ring 2 and the lower roller ring 3) into the positioning grooves 10. 18 through holes 15 are uniformly formed in the circumferential direction of an annular part, inserted into the positioning groove 10, of the annular boss 14, and counter bores 11 are formed in one sides of the 18 through holes of the rim 9 of the roller core 1 and used for sinking cylindrical heads of the hexagon socket screws 4 for connecting the roller core 1 and the roller rings (the upper roller ring 2 and the lower roller ring 3) into the roller core 1, so that the roller is convenient to fasten and dismount on one hand, and the carrier roller is prevented from interfering with a super-detection track on the other hand.

The roll collar is an annular body, and in order to facilitate installation, disassembly and replacement, the roll collar adopts a split structure, is firstly processed according to an integral ring, and is cut into an upper block and a lower block which are the same by a wire cutting machine after being processed, namely an upper roll collar 2 and a lower roll collar 3, the inner circular surface of the roll collar (the upper roll collar 2 and the lower roll collar 3) is contacted with the outer circular surface of a rim 9 of a roll core 1, and a boss 14 on the circumference of the inner circular surface of the roll collar (the upper roll collar 2 and the lower roll collar 3) is matched with a groove 10 on the circumference of the outer circular surface of the rim 9 of the roll core 1, so that the axial positioning effect is mainly played. The outer circular surfaces of the roll rings (the upper roll ring 2 and the lower roll ring 3) are provided with annular V-shaped grooves 16, and the bottoms of the V-shaped grooves 16 are provided with U-shaped grooves 17, so that when the two sides of the V-shaped grooves 16 are worn in a certain range and the train wheel is subjected to ultrasonic flaw detection, the top of the rim of the narrower train wheel cannot be contacted with the bottom of the V-shaped grooves 16, and the phenomenon of shaking and even slipping in the flaw detection process of the train wheel is avoided. A plurality of transverse grooves 18 are uniformly formed in the two sides of the V-shaped groove 16 along the axial direction and used for increasing the friction coefficient between the carrier roller and the rim of the train wheel and increasing the friction force.

The roll rings (the upper roll ring 2 and the lower roll ring 3) are made of tin bronze, have high mechanical property, antifriction property and corrosion resistance, are easy to process, and cannot influence the surface quality of the train wheel due to the roller factors when the roller drives the train wheel to run. The roll collar is provided with 18 through holes 15 which are uniformly distributed in the circumferential direction and used for the inner hexagon screws 4 for fixing the roll core 1 and the roll collar (the upper roll collar 2 and the lower roll collar 3) to pass through.

The roller core 1 and the roller rings (the upper roller ring 2 and the lower roller ring 3) are fixedly connected by adopting stainless steel inner hexagon screws 4, stainless steel spring washers 5 and stainless steel hexagon nuts 6, and the stainless steel fasteners are adopted, so that the phenomenon that the installation and the disassembly of the fasteners are influenced due to the corrosion of ultrasonic flaw detection couplant-water on the fasteners can be avoided.

When the V-shaped groove 16 at the contact part of the carrier roller and the wheel rim is seriously worn, only the roller rings (the upper roller ring 2 and the lower roller ring 3) need to be replaced, the carrier roller and the carrier roller shaft connecting body do not need to be integrally removed to replace the whole carrier roller, when the carrier roller is replaced, the hexagonal nuts 6 connecting the roller core 1 and the roller rings (the upper roller ring 2 and the lower roller ring 3) are loosened, the inner hexagonal screws 4 are drawn out, the roller rings (the upper roller ring 2 and the lower roller ring 3) with the serious wear of the V-shaped groove 16 are taken down, the contact surfaces of the rim 9 of the roller core 1 and the roller rings (the upper roller ring 2 and the lower roller ring 3) are cleaned, the new roller rings (the upper roller ring 2 and the lower roller ring 3) are replaced, the inner hexagonal screws 4 penetrate through the counter bores 11 of the roller core 1 and the through holes 15 of the roller rings (the upper roller ring 2 and the lower roller ring 3), the spring washers 5 are sleeved and the hexagonal nuts 6 are fastened, and the replacement of the roller rings is finished, and the production is delivered.

Claims

1. The utility model provides a train wheel is detected a flaw and is used bearing roller which characterized in that: comprises an annular roller core (1), an annular roller ring, a fastener inner hexagonal screw (4) for connecting the roller core and the roller ring, a spring washer (5) and a hexagonal nut (6); the roll collar is divided into an upper roll collar (2) at the upper half part and a lower roll collar (3) at the lower half part, and an annular V-shaped groove (16) is formed in the outer circular surface of the roll collar; the roller core comprises an annular hub (7) of an inner ring, an annular spoke plate (8) of a middle ring and an annular rim (9) of an outer ring, and a circle of annular positioning grooves (10) are machined on the periphery of the outer circumferential surface of the rim; the inner ring of the roll collar is provided with an annular boss (14) which is inserted into a positioning groove of a wheel rim, the inner circular surface of the roll collar is contacted with the outer circular surface of the wheel rim of the roll core, a plurality of through holes (15) are uniformly arranged on the circumferential direction of the annular part of the annular boss inserted into the positioning groove, a counter bore (11) is processed at one outer side of each through hole, a cylindrical head of an inner hexagon screw sinks into the counter bore, and the inner hexagon screw passes through the through holes to fasten the roller ring and the roller core together by using a spring washer and a hexagon nut; a U-shaped groove (17) is formed at the bottom of the V-shaped groove (16), and a plurality of transverse grooves (18) are uniformly formed on two sides of the V-shaped groove (16) along the axial direction; a plurality of lightening holes are formed in the spoke plate (8), and the inner hexagonal screw (4), the spring washer (5) and the hexagonal nut (6) are all made of stainless steel materials.

2. The carrier roller for flaw detection of train wheels according to claim 1, characterized in that: the number of the through holes (15) is 18.

3. The carrier roller for flaw detection of train wheels according to claim 1, characterized in that: the roll collar is made of tin bronze.