CN212404653U

CN212404653U - Double-rim and single-rim welding type alloy steel frog made of three materials through welding

Info

Publication number: CN212404653U
Application number: CN202021954462.4U
Authority: CN
Inventors: 蔡韶峰; 吴健康; 江峰; 王力红; 夏仕敏; 徐斌; 鲁子超
Original assignee: Wuhu China Railway Cogifer Track Co Ltd
Current assignee: Wuhu China Railway Cogifer Track Co Ltd
Priority date: 2020-09-09
Filing date: 2020-09-09
Publication date: 2021-01-26
Anticipated expiration: 2030-09-09

Abstract

The utility model discloses a double rim and single wheel reason welding formula alloy steel frog that three kinds of material welding were made, including fork heart piece, double round reason track and single round reason track, be equipped with fork heart rail groove on the fork heart piece, fork heart rail groove includes double round reason groove and single round reason groove, double round reason groove with single round reason groove is alternately, double round reason track welding is in the both ends in double round reason groove, single round reason track welding is in the both ends in single round reason groove, every double round reason groove has a pair of rim rail groove of cooperation double round reason wheel both sides rim, and width between two rim rail grooves is the same with double round reason orbital top width. The utility model is suitable for a single wheel reason track and the criss-cross structure of double wheel reason track to the wheel passes through the defect of unstability, security difference when having solved different grade type track and alternately, and this kind of frog wholeness is strong, and the wearability is good.

Description

Double-rim and single-rim welding type alloy steel frog made of three materials through welding

Technical Field

The utility model relates to a double rim and single rim welding formula alloy steel frog that three kinds of materials welding were made.

Background

In the field of rails, a fork center of an alloy steel frog is a rail plane crossing device for one line and another line, and is usually laid in a large number in a rail line, a factory-dedicated line and the like. When the two lines are limited by terrain, space and functions, so that the rail types are different, the crossing angles are nonstandard, and the rail line type is complex, the traditional manganese steel frog and alloy steel frog are difficult to use, the processing cost is high, and the superiority of the fork core of the alloy steel frog is highlighted.

However, in the current rail car in factory (such as a workshop flat car), because the running mechanism adopts double wheel rim wheels, the corresponding rail also adopts matched I-shaped rails, but the I-shaped rails are different from the I-shaped rails of single wheel rim rails used on the train in model and height. However, the existing frog is basically the cross connection between single-wheel-rim rails, when the double-wheel-rim rails and the common single-wheel-rim rails are crossed in a factory dedicated line, the fork core structure of the existing alloy steel is difficult to adapt to the structure of the crossing of the single-wheel-rim rails and the double-wheel-rim rails, and because the depth of the double-wheel-rim rails to the rail groove, the arrangement of the working edge and the relation between the groove bottom and the wheel rim are different from the existing frog structure of the crossing rails, a new improvement scheme is needed to solve the problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a felly and single wheel reason welding formula alloy steel frog for three kinds of material welding are made to solve prior art well frog structure can not be applicable to the cross connection of double round reason track and single wheel reason track, safe and reliable's problem when also can't guarantee the vehicle and pass through the fork heart, but also solved current combination formula frog when using wholeness relatively poor, maintained the problem of difficulty.

A double rim and single wheel reason welding formula alloy steel frog that three kinds of material welding made, including fork heart piece, double rim track and single rim track, be equipped with fork heart rail groove on the fork heart piece, fork heart rail groove includes double rim groove and single rim groove, double rim groove with single rim groove is alternately, double rim rail welding is in the both ends of double rim groove, single rim rail welding is in the both ends of single rim groove, every double rim groove has a pair of rim rail groove of cooperation double rim wheel both sides rim, and the width between two rim rail grooves is the same with double rim orbital top width.

Preferably, the groove depth is the same everywhere in the wheel flange rail groove, the single wheel flange groove comprises a middle part crossed with the double wheel flange rail groove, a fork center edge part close to the single wheel flange rail and a transition part, the middle part and the wheel flange rail groove have the same groove depth, the fork center edge part has a groove depth larger than that of the wheel flange rail groove, and the transition part connects the middle part and the fork center edge part and realizes smooth transition of the groove depth therebetween.

Preferably, the transition portion includes a first transition section and a second transition section, the first transition section is connected with the fork center edge portion, the second transition section is connected between the first transition section and the middle portion, the horizontal inclination of the groove bottom of the second transition section is smaller than the horizontal inclination of the groove bottom of the second transition section, the groove bottom of the first transition section does not contact with the single-rim wheel, the groove bottom of the second transition section contacts with the single-rim wheel, and the height of the groove bottom of the single-rim wheel to the middle portion is raised.

Preferably, the groove depth of the linear shallow groove is 22mm, the groove depth of the curved deep groove is 47mm, the groove depth of the joint of the first transition section and the second transition section is 30mm, the length of the first transition section is 50mm, and the length of the second transition section is 480 mm.

Preferably, the groove width of the transition portion is narrowed uniformly from the edge portion of the fork center to a length in the direction of the middle portion to form a groove width changing section.

Preferably, the length of the groove width changing section is 150mm, the groove width of the groove width changing section at the edge part connecting the fork center is 65mm, and the groove width of the groove width changing section at the end close to the middle part is 50 mm.

Preferably, the fork core block comprises an upper wear-resistant block and a lower base block, the fork core rail groove is machined in the upper wear-resistant block, the upper wear-resistant block is welded to the top of the lower base block through high-strength wear-resistant welding materials, and lug plates are welded to the bottoms of the two sides of the lower base block.

Preferably, the double-rim track and the single-rim track are i-shaped tracks with different heights and types, and the top surfaces of the double-rim track and the single-rim track are flush with the top surface of the upper wear-resistant block.

The utility model has the advantages that: the double-wheel-rim groove structure is suitable for the cross position of a double-wheel-rim rail and a single-wheel-rim rail, the transverse deviation range of a vehicle is effectively restrained through the groove width change section and the two transition sections, the wheels are smoothly supported and lifted when the wheels pass through the fork center again, and therefore the structure of the double-wheel-rim groove which is not easy to adjust is maintained, the stability of the rail vehicle and a train in the running process is effectively guaranteed, the accident that the wheels and the fork center collide is effectively prevented in the running process, and the safety of passengers is greatly improved.

Furthermore the utility model discloses a make fork heart piece through the two welded connection of NM400 wear-resisting alloy steel and the ordinary carbon structural steel of Q235, reduced fork heart piece manufacturing cost under the prerequisite of guaranteeing wearability and life, manufacturing is also more convenient high-efficient. The frog core block is welded and connected with the high manganese steel rail made of the U75V material, so that the integral welding of the frog is realized, the wear-resistant effect, the strength and the cost are controllable, and the welding position strength reliability of welding positions among different materials is ensured through a proper welding method and a reliable detection mode.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the center fork block of the present invention.

Fig. 3 is a cross-sectional view of the structure of fig. 2 in the direction a-a.

Fig. 4 is a cross-sectional view of the structure of fig. 2 in the direction B-B.

Fig. 5 is a cross-sectional view of the structure of fig. 2 in the direction C-C.

Fig. 6 is a cross-sectional view of the structure of fig. 2 in the direction D-D.

Fig. 7 is a schematic structural view of a dual-rim wheel.

The reference numbers in the figures are: 1. fork center piece, 11, single rim groove, 111, middle part, 112, first transition section, 113, second transition section, 114, fork center edge part, 115, groove width variation section, 12, double rim groove, 121, rim rail groove, 13, lug plate, 14, upper wear block, 15, lower base block, 16, intersection, 2, double rim rail, 3, single rim rail.

Detailed Description

The following detailed description of the embodiments of the present invention will be provided to help those skilled in the art to more fully, accurately and deeply understand the concept and technical solutions of the present invention, through the description of the embodiments with reference to the accompanying drawings.

As shown in fig. 1-7, the utility model provides a double rim and single rim welding formula alloy steel frog that three kinds of materials welding were made, including fork core piece 1, double rim track 2 and single rim track 3, be equipped with fork heart rail groove on the fork core piece 1, fork heart rail groove includes double rim groove 12 and single rim groove 2, double rim groove 12 with single rim groove 2 intersects, double rim track 2 welds the both ends in double rim groove 12, single rim track 3 welds the both ends in single rim groove 2, every double rim groove 12 has a pair of rim rail groove 121 of cooperation double rim wheel (as shown in fig. 7) both sides rim, and the width between two rim rail grooves 121 is the same with the top width of double rim track 2.

The wheel flange rail groove 121 is a straight-line type shallow groove, the single wheel flange groove 2 is a curved deep groove, the groove depth of each part of the wheel flange rail groove 121 is the same, the single wheel flange groove 2 comprises a middle part 111 crossed with the double wheel flange rail groove 121, a fork center edge part 114 close to the single wheel flange rail 3 and a transition part, the groove depth of the middle part 111 is the same as that of the wheel flange rail groove 121, the groove depth of the fork center edge part 114 is larger than that of the wheel flange rail groove 121, and the transition part is connected with the middle part 111 and the fork center edge part 114 and realizes smooth transition of the groove depth between the two parts.

The transition portion comprises a first transition section 112 and a second transition section 113, the first transition section 112 is connected with the fork center edge portion 114, the second transition section 113 is connected between the first transition section 112 and the middle portion 111, the horizontal inclination angle of the groove bottom of the second transition section 113 is smaller than that of the groove bottom of the second transition section 113, the groove bottom of the first transition section 112 is not contacted with a single-rim wheel, and the groove bottom of the second transition section 113 is contacted with the single-rim wheel to lift the single-rim wheel to the height of the groove bottom of the middle portion 111. Not only does the groove bottom height need to be changed to match different rail type intersections, but also the groove width is changed for the purpose of controlling the lateral deviation of the wheel, and the groove width of the transition part is uniformly narrowed from the fork center edge part 114 to a length in the direction of the middle part 111 to form a groove width change section.

The fork core block 1 comprises an upper wear-resistant block 14 and a lower base block 15, the fork core rail groove is machined in the upper wear-resistant block 14, the upper wear-resistant block 14 is welded to the top of the lower base block 15 through high-strength wear-resistant welding materials, and lug plates 13 are welded to the bottoms of two sides of the lower base block 15.

The double-rim track 2 and the single-rim track 3 are I-shaped tracks with different heights and types, and the top surfaces of the double-rim track 2 and the single-rim track 3 are flush with the top surface of the upper wear-resistant block 14. The fork core block 1 after welding forming adopts the heterotypic welding method to weld double rim track 2 and single rim track 3 on its terminal surface.

Specific embodiments of the fork core rail groove are as follows: the groove depth of the linear shallow groove is 22mm, the groove depth of the curved deep groove is 47mm, the groove depth of the joint of the first transition section 112 and the second transition section 113 is 30mm, the length of the first transition section 112 is 50mm, and the length of the second transition section 113 is 480 mm. The length of the groove width changing section is 150mm, the groove width of the groove width changing section at the end connected with the fork center edge part 114 is 65mm, and the groove width of the groove width changing section at the end close to the middle part 111 is 50 mm.

The utility model discloses in order to cooperate the cooperation relation of double round reason wheel and double round reason track 2, need begin a pair of rim rail groove 121, rim rail groove 121 leans on one side tight each other for the work limit. Thus, the two rim grooves 121 and the single rim groove 2 form two intersection points, the single rim groove 2 near the intersection point and between the two intersection points belongs to the middle part 111, and the part of the single rim groove 2 at the edge of the fork center block 1 is the fork center edge part 114. In the case of a double-rim wheel, since the depth of the corresponding double-rim groove 12 needs to be maintained at a certain depth, when the train enters the position of the intersection, the height of the single-rim wheel of the train needs to be smoothly transited to the depth of the intersection in the single-rim groove 2.

In the scheme, the groove width change section is formed at the part of the transition part close to the edge of the fork core block 1, and the part of the single-wheel-rim groove 2 with the wheel rim in little contact with the groove bottom to no longer in contact forms a structure with the groove width being increased, so that the restraint range of a vehicle is changed when a wheel enters or leaves the fork core, and the range of the lateral deviation of the wheel on the fork core is reduced.

In addition, the fork core block 1 supports the single wheel rim wheel at the bottom of the single wheel rim groove 2 through two transition sections, and smoothly transits to the position of the intersection point 16, wherein the first transition section 112 is used for rapidly lifting the height in a short distance, so that the joint of the two transition sections can be contacted with the wheel rim of the single wheel rim wheel, and the lifting effect is realized, while the second transition section 113 is used for gently lifting the wheel transition to the height corresponding to the bottom of the wheel rim rail groove 121 in a long distance, so that a train can relatively smoothly pass through the fork core, when the single wheel rim wheel passes through the two intersection points 16 and moves towards the edge direction of the fork core block 1, the single wheel rim wheel is lowered to the position contacted with the working edge of the single wheel rim groove 2 through the second transition section 113, and further the first transition section 112 is restored to the groove depth when entering, so that the wheel rim is not contacted with the bottom of the groove, and the contact of the working edge is kept reliable, can be smoothly moved onto the single-flange track 3. The combination of the above structures has the effect of preventing the wheel from hitting the point when passing through the fork center.

In addition, the upper wear-resistant block 14 of the fork center block 1 can be made of NM400 wear-resistant alloy steel, although the cost is high, the wear resistance is good, and the processing method is suitable for machining, so that the processing of the rail groove can be accurately realized, the precision is high, and the service life is long. The lower base block 15 can be made of Q235 common carbon structural steel with lower cost, the production cost is reduced on the premise of ensuring the wear resistance and the service life by welding the lower base block and the Q235 common carbon structural steel, and then the lower base block and the high manganese steel rail made of U75V material are welded to complete the connection of the frog center block 1 and the single-wheel-rim steel rail 3 in the frog structure.

The above description is made for the exemplary purposes with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above embodiments, and various insubstantial improvements can be made without modification to the present invention.

Claims

1. The utility model provides a double rim and single rim welding formula alloy steel frog that three kinds of materials welding were made which characterized in that: including fork heart piece (1), double rim track (2) and single rim track (3), be equipped with fork heart rail groove on fork heart piece (1), fork heart rail groove includes double rim groove (12) and single rim groove (11), double rim groove (12) with single rim groove (11) are alternately, double rim track (2) welding is in the both ends of double rim groove (12), single rim track (3) welding is in the both ends of single rim groove (11), every double rim groove (12) have a pair of rim rail groove (121) of cooperation double rim wheel both sides rim, and the width between two rim rail grooves (121) is the same with the top width of double rim track (2).

2. A three-material welded double-rim and single-rim alloy steel frog according to claim 1 wherein: the flange rail groove (121) has the same groove depth, the single flange groove (11) comprises a middle part (111) crossed with the double flange rail groove (121), a fork center edge part (114) close to the single flange rail (3) and a transition part, the middle part (111) has the same groove depth as the flange rail groove (121), the fork center edge part (114) has a groove depth larger than that of the flange rail groove (121), and the transition part connects the middle part (111) and the fork center edge part (114) and realizes smooth transition of the groove depth between the middle part (111) and the fork center edge part (114).

3. A three-material welded double-rim and single-rim alloy steel frog according to claim 2 wherein: the transition portion comprises a first transition section (112) and a second transition section (113), the first transition section (112) is connected with the fork center edge portion (114), the second transition section (113) is connected between the first transition section (112) and the middle portion (111), the horizontal inclination angle of the groove bottom of the second transition section (113) is smaller than that of the groove bottom of the second transition section (113), the groove bottom of the first transition section (112) is not in contact with a single-rim wheel, the groove bottom of the second transition section (113) is in contact with the single-rim wheel, and the single-rim wheel is lifted to the height of the groove bottom of the middle portion (111).

4. A three-material welded double-rim and single-rim alloy steel frog according to claim 3 wherein: the wheel flange rail groove (121) is a linear type shallow groove, the single wheel flange groove (11) is a curved type deep groove, the groove depth of the linear type shallow groove is 22mm, the groove depth of the curved type deep groove is 47mm, the groove depth of the joint of the first transition section (112) and the second transition section (113) is 30mm, the length of the first transition section (112) is 50mm, and the length of the second transition section (113) is 480 mm.

5. A three-material welded double-rim and single-rim alloy steel frog according to claim 3 or 4, characterized in that: the groove width of the transition part is uniformly narrowed from the fork center edge part (114) to a part of the length of the middle part (111) to form a groove width change section.

6. A three-material welded double-rim and single-rim alloy steel frog according to claim 5 wherein: the length of the groove width transformation section is 150mm, the groove width of the groove width transformation section at the position where the fork center edge part (114) is connected is 65mm, and the groove width of one end, close to the middle part (111), of the groove width transformation section is 50 mm.

7. A three-material welded double-rim and single-rim alloy steel frog according to claim 6 wherein: the fork core block (1) comprises an upper wear-resistant block (14) and a lower base block (15), the fork core rail groove is machined in the upper wear-resistant block (14), the upper wear-resistant block (14) is welded to the top of the lower base block (15) through high-strength wear-resistant welding materials, and lug plates (13) are welded to the bottoms of the two sides of the lower base block (15).

8. A three-material welded double-rim and single-rim alloy steel frog according to claim 7 wherein: the double-flange track (2) and the single-flange track (3) are I-shaped tracks with different heights and types, and the top surfaces of the double-flange track (2) and the single-flange track (3) are flush with the top surface of the upper wear-resistant block (14).