阅读说明：本技术 一种分体式组合辙叉 (Split type combination frog ) 是由 严则会 闫旭辉 李军志 李明刚 牛毓敏 于 2021-01-07 设计创作，主要内容包括：本发明公开了一种分体式组合辙叉,包括心轨和一对翼轨,在心轨上连接有一对叉跟轨,在心轨理论尖端至50～100断面区域内设置桥式垫板,在各翼轨内侧均设有镶嵌块,心轨、翼轨和镶嵌块通过螺栓副连接,心轨和叉跟轨通过螺栓副连接,设有防转钢垫圈和间隔铁,心轨和镶嵌块选用锻造高锰钢或合金钢材料制成,镶嵌块两端均藏于翼轨内呈藏尖结构,心轨包括工作段和连接段且均呈楔形,连接段底部侧边被叉跟轨包裹,连接段与叉跟轨的轨顶底部以及轨底顶部通过斜面贴紧配合；工作段轨腰处两侧设置呈V型的第一斜面,工作段轨底顶部设置第二斜面,间隔铁与镶嵌块通过止口结构配合,镶嵌块与翼轨的轨顶底部以及轨底顶部通过斜面贴紧配合。(The invention discloses a split type combined frog, which comprises a center rail and a pair of wing rails, wherein the center rail is connected with a pair of fork heel rails, a bridge type base plate is arranged in a section area from the theoretical tip of the center rail to 50-100, the inner sides of the wing rails are respectively provided with an embedding block, the center rail, the wing rails and the embedding blocks are connected through bolt pairs, the center rail and the fork heel rails are connected through the bolt pairs and are provided with anti-rotation steel washers and spacer irons, the center rail and the embedding blocks are made of forged high manganese steel or alloy steel materials, two ends of the embedding blocks are hidden in the wing rails and are in a tip hiding structure, the center rail comprises a working section and a connecting section which are both in a wedge shape, the side edge of the bottom of the connecting section is wrapped by the fork heel rails, and the connecting section is in tight fit with the rail top of the fork; the two sides of the working section rail web are provided with V-shaped first inclined planes, the top of the working section rail bottom is provided with a second inclined plane, the spacer iron and the insert block are matched through a spigot structure, and the insert block is tightly matched with the bottom of the rail top and the top of the rail bottom of the wing rail through the inclined planes.)

1. The utility model provides a split type combination frog, includes heart rail (1) and a pair of wing rail (2) heart rail (1) on be connected with a pair of fork and follow rail (3), its characterized in that: the utility model discloses a wing rail, including heart rail (1) theoretical most advanced to 50 ~ 100 sections regional setting bridge type backing plate (4), each wing rail (2) inboard all be equipped with mosaic block (5), heart rail (1), wing rail (2) and mosaic block (5) are connected through the bolt pair, heart rail (1) and fork with rail (3) through the bolt pair connection, be equipped with in the bolt pair junction outside and prevent changeing steel washer (6), mosaic block (5) and heart rail (1) between be equipped with interval iron (7), heart rail (1) and mosaic block (5) choose to forge high manganese steel or alloy steel material and make, mosaic block (5) and wing rail (2) top surface parallel and level that are located throat department, mosaic block (5) front end be located heart rail (1)50-75 sections, mosaic block (5) both ends all hide in wing rail (2) and be and hide the pointed structure, the point rail (1) comprises a working section (1-1) and a connecting section (1-2) which are both wedge-shaped, the bottom of the working section (1-1) is contacted with a bridge type base plate (4) and a common base plate, the side edge of the bottom of the connecting section (1-2) is wrapped by a fork and heel rail (3), the rail bottom of the fork and heel rail (3) is contacted with the common base plate, and the connecting section (1-2) is closely matched with the rail top bottom of the fork and heel rail (3) and the rail bottom top through inclined planes; working section (1-1) web of a rail department both sides set up first inclined plane (1-3) that are the V type, working section (1-1) rail foot top set up second inclined plane (1-4), interval iron (7) and mosaic block (5) pass through tang structure cooperation, mosaic block (5) and the top of the rail top bottom and the rail foot top of wing rail (2) pass through the inclined plane and paste tight cooperation.

2. The split composite frog assembly of claim 1, wherein: inlay piece (5) hide and be equipped with 1-5mm clearance between point position side and wing rail (2) railhead side, heart rail (1) railhead lateral wall and fork set up 1-5mm clearance with rail (3) railhead lateral wall, heart rail (1) rail web and fork set up 1-5mm clearance with rail (3) rail web, inlay piece (5) railhead lateral wall and wing rail (2) railhead lateral wall set up 1-5mm clearance, inlay piece (5) rail web and wing rail (2) rail web set up 1-5mm clearance.

Technical Field

The invention relates to the field of rail transit, in particular to a railway frog.

Background

With the annual increase of the domestic high-speed railway traffic, the existing trunk railways tend to develop towards heavy haul railways, and the market demand of heavy haul turnout products is greatly increased. Under the condition of operation, the abrasion and damage of frog of main parts of the turnout are far greater than those of a common line, the existing frog for the heavy-load turnout has the problems of short service life, frequent replacement and the like, and the transportation capacity of the heavy-load line is seriously restricted. The combined frog is a frog form widely used outside domestic heavy haul railways, can meet the laying requirements of seamed and seamless lines, and is mainly structurally characterized in that the combined frog is of a symmetrical structure, and alloy steel or high manganese steel or forged high manganese steel is selected as a main stream frog point rail material, so that the manufacturing cost is high. In the service process of most frog, the straight-strand crossing density and the load of the frog are far more than those of the frog curved strands, so that the damage conditions of a large number of lower frog are analyzed, the damage parts of the frog are mainly shown in the center rail of the frog straight strand and the wheel tread area of a wing rail wheel, and the center rail curved-strand center rail and the wheel tread area of the wing rail wheel are intact.

Disclosure of Invention

In order to solve the defects in the prior art, the invention provides the split type combined frog which reduces the manufacturing difficulty, improves the rigidity of the frog, uses a material with excellent performance for the key part of the frog, gives full play to the mechanical property of the combined frog material, reduces the manufacturing cost and the use cost of a user and is convenient to install and maintain, and the adopted technical scheme is as follows:

a split type combined frog comprises a point rail and a pair of wing rails, wherein the point rail is connected with a pair of fork tracking rails, a bridge type base plate is arranged in a theoretical tip to 50-100 cross section areas of the point rail, embedding blocks are arranged on the inner sides of the wing rails and are connected with the point rail through bolt pairs, the point rail and the fork tracking rails are connected through bolt pairs, anti-rotation steel gaskets are arranged on the outer sides of the joints of the bolt pairs, spacing iron is arranged between the embedding blocks and the point rail, the point rail and the embedding blocks are made of forged high manganese steel or alloy steel materials, the embedding blocks located at throats are flush with the top surfaces of the wing rails, the front ends of the embedding blocks are located on 50-75 cross sections of the point rail, two ends of the embedding blocks are hidden in the wing rails and are in tip hiding structures, the point rail comprises a working section and a connecting section and is in a wedge shape, the bottom of the working section is in contact with the bridge type base plate and a common contact with the bridge type base plate, the side edge of the bottom of the connecting section is wrapped by the fork and heel rail, the rail bottom of the fork and heel rail is contacted with a common base plate, and the connecting section is closely matched with the bottom of the rail top of the fork and heel rail and the top of the rail bottom through inclined planes; working section web of rail department both sides set up the first inclined plane that is the V type, working section rail foot top set up the second inclined plane, interval iron and mosaic block pass through tang structure cooperation, the top of the rail bottom and the rail foot top of mosaic block and wing rail pass through the inclined plane and paste tight cooperation.

Furthermore, the mosaic block hide and be equipped with 1-5mm clearance between tip position side and the wing rail top of a rail side, heart rail top of a rail lateral wall and fork with rail top of a rail lateral wall set up 1-5mm clearance, heart rail web and fork with rail web set up 1-5mm clearance, mosaic block top of a rail lateral wall and wing rail top of a rail lateral wall set up 1-5mm clearance, mosaic block web and wing rail web set up 1-5mm clearance.

Adopt the frog of above-mentioned structure, beneficial effect does:

(1) simplify combination frog structure, only adopt to forge high manganese steel or alloy steel material to the easy damaged position of mosaic block and heart rail and make, reduce and forge high manganese steel or alloy steel quality, the linkage segment pastes tight cooperation through the inclined plane with the rail top bottom and the rail bottom top of fork follow rail during the equipment, mosaic block pastes tight cooperation through the inclined plane with the rail top bottom and the rail bottom top of wing rail, all the other positions set up the clearance, have reduced the machining allowance, reduce manufacturing cost.

(2) The length directions of two side surfaces of the point rail are designed with wedge-shaped structures, so that the forming cutter is adopted for processing, and the manufacturing quality is improved. The side plane, the upper inclined plane, the lower inclined plane and the side wall of the railhead in the full-length region of the mosaic block are parallel, and a forming cutter can be adopted for processing, so that the manufacturing quality and efficiency are improved. When the parts are assembled, the mosaic blocks and the wing rails are in close fit by adopting the upper and lower inclined planes, the short high-strength bolts penetrate through the first bolt holes at the front ends and the rear ends of the mosaic blocks to be tightly connected with the wing rails, and the wing rails and the mosaic blocks are assembled with other parts after being integrated, so that the assembly difficulty is reduced, and the matching quality and efficiency of single parts are improved.

(3) The point rail is regional with the fork with the rail cooperation with the rail transmission load to backing plate, and other positions are direct to be regional with the backing plate and contact, and point rail bottom surface and backing plate surface contact are in service process at the frog, transmit load to the backing plate, set up the bridge type backing plate in the theoretical most advanced of point rail to 50 ~ 100 sections region and provide the support, have bigger supporting area, and stability is better, reduces the quality simultaneously, reduction material cost.

(4) Frog point rail, mosaic block roll the damage through the wheel, and the crew member utilizes the circuit skylight time, uses the crow bar, and special use lifts rail ware, special spanner etc. and dismantles frog backing plate, high strength bolt, changes new system point rail, mosaic block, and all the other parts do not change, and the installation resets to polish with rail and point rail installation area point rail top surface to the fork, guarantee the fork with rail and point rail top surface ride comfort requirement, thereby reduce user use cost, extension frog life.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a sectional view taken along line A-A of FIG. 1;

FIG. 3 is a sectional view taken along line B-B of FIG. 1;

FIG. 4 is a sectional view taken along line C-C of FIG. 1;

FIG. 5 is a sectional view taken along line D-D of FIG. 1;

FIG. 6 is an enlarged view at E of FIG. 1;

FIG. 7 is a side view of a mosaic piece;

FIG. 8 is a top view of a mosaic piece;

FIG. 9 is a schematic view of the assembly structure of the mosaic blocks and the wing rails in the direction F in FIG. 7;

FIG. 10 is a sectional view of the assembled structure of the mosaic blocks and the wing rails in the G-G direction in FIG. 7;

FIG. 11 is a schematic view of the assembly structure of the H-direction mosaic blocks and the wing rails in FIG. 7;

FIG. 12 is a side view of a point rail;

FIG. 13 is a top view of a spindle rail;

FIG. 14 is a sectional view in the direction of line I-I of FIG. 12;

fig. 15 is a sectional view taken along the direction J-J of the connection section and the fork and heel rail assembly of fig. 12.

Detailed Description

The frog shown in fig. 1 comprises a point rail 1, a pair of wing rails 2, a pair of fork heel rails 3 and a pair of inlaying blocks 5, wherein the wing rails 2 are symmetrically arranged at two sides of the point rail 1, the inlaying blocks 5 shown in fig. 2 are arranged at the inner sides of the wing rails 2 through bolt pairs, the fork heel rails 3 are also symmetrically arranged at two sides of the point rail 1 and are arranged at the point rail 1 through bolt pairs as shown in fig. 5, spacing irons 7 are arranged between the point rail 1 and the inlaying blocks 5 as shown in fig. 3 and 4, and anti-rotation steel washers 6 are arranged at the outer sides of the joints of the bolt pairs as shown in fig. 2 to 5; because the point rail 1 and the mosaic block 5 are positioned at the most easily damaged parts, the point rail 1 and the mosaic block 5 are made of forged high manganese steel or alloy steel materials, and compared with the traditional integral high manganese steel frog point rail, the quality of the forged high manganese steel or alloy steel is reduced. The mosaic block 5 at the throat is flush with the top plane of the wing rail 2, the front end (the end close to the point rail) of the mosaic block 5 is positioned at the section of the point rail 50-75, and the two ends of the mosaic block 5 are hidden in the wing rail 2 to form a tip hiding structure as shown in fig. 6. In order to provide better support for the point rail 1, a bridge type base plate 4 is arranged in the area from the theoretical tip of the point rail 1 to the section of 50-100 as shown in fig. 1, and the rest parts of the frog are common base plates.

The point rail 1 shown in fig. 12 and 13 comprises a working section 1-1 and a connecting section 1-2 which are both wedge-shaped along the length direction of the point rail, the rail bottom of the working section 1-1 shown in fig. 1 is contacted with a bridge type backing plate 4, namely a common backing plate, so that the load is directly transferred to the backing plate, the connecting section 1-2 is connected with a fork and heel rail 3 through a bolt pair, the rail waist and the rail bottom of the connecting section 1-2 shown in fig. 15 are wrapped by the fork and heel rail 3, the rail top part of the connecting section 1-2 is kept flush with the fork and heel rail 3, the part is not contacted with the common backing plate, but is transferred to the rail bottom of the fork and heel rail 3, and the rail bottom of the fork and heel rail 3 is contacted with the common backing plate so that the load. As shown in fig. 14, the two sides of the rail web of the working section 1-1 are provided with the first inclined planes 1-3 in a V shape, the top of the rail bottom of the working section 1-1 is provided with the second inclined planes 1-4, as shown in fig. 3 and 4, the spacer iron 7 is respectively matched with the first inclined planes 1-3 and the second inclined planes 1-4 tightly, namely, a forming tool can be adopted for processing, so that the processing efficiency and quality are improved, as shown in fig. 3 and 4, the spacer iron 7 is matched with the mosaic blocks 5 in a spigot structure, and the mounting reliability of the spacer iron 7, the mosaic blocks 5 and the core rail 1 is improved.

In order to reduce the installation difficulty, as shown in fig. 15, the connecting section 1-2 and the top of the rail top and the top of the rail bottom of the fork and the rail following rail 3 are closely matched through inclined planes, as shown in fig. 3 and fig. 4, the mosaic block 5 and the bottom of the rail top and the top of the rail bottom of the wing rail 2 are closely matched through inclined planes, namely, the installation is carried out through the close matching of the inclined planes at the two ends in the installation, gaps are arranged at the rest parts, the installation difficulty is reduced, the requirement on the machining precision is reduced, and the machining and the installation are more.

According to the requirement of double-sided installation, certain assembly gaps can be reserved at other parts, as shown in fig. 6, a gap of 1-5mm is arranged between the side surface of the tip hiding part of the mosaic block 5 and the side surface of the top of the wing rail 2, as shown in fig. 15, a gap of 1-5mm is arranged between the side wall of the top of the center rail 1 and the side wall of the top of the fork and heel rail 3, a gap of 1-5mm is arranged between the rail web of the center rail 1 and the rail web of the fork and heel rail 3, as shown in fig. 2-4, a gap of 1-5mm is arranged between the side wall of the top of the mosaic block 5 and the side wall of the top of the wing rail 2, and. In each figure, the position where the inclined surfaces are tightly matched is marked with alpha, and the position of the gap is marked with beta.