阅读说明：本技术 对插式钢轨伸缩接头 (Opposite-insertion type rail expansion joint ) 是由 靳文勇 于 2021-03-17 设计创作，主要内容包括：本发明的一种地铁、高铁钢轨热胀冷缩对插式钢轨伸缩接头,结构简单,安全可靠,维护方便,适合各个地区高铁、地铁钢轨的连接使用。这种对插式钢轨伸缩接头最大的优点就是,采用了上连接轨相互交叉对接的方式,将钢轨接头伸缩缝分开成两半前后不同位置,在列车高速行驶时也不会产生与以往列车车轮撞击轨头接缝的哐当声音。同时加厚了对插式钢轨伸缩接头中部轨轨腰的宽度,这样就不会影响列车高速行驶时受力变形的安全问题,这样就很好的解决了高铁钢轨热胀冷缩的问题。这种对插式钢轨伸缩接头不仅节省了高铁的建设成本,提高了高铁的建设速度,而且大量减少了高铁的养护费用。(The oppositely-inserted type steel rail expansion joint for the subway and high-speed rail, disclosed by the invention, has the advantages of simple structure, safety, reliability and convenience in maintenance, and is suitable for connecting and using the high-speed rail and the subway steel rail in various regions. The butt-inserting type steel rail expansion joint has the greatest advantage that the mode that the upper connecting rails are mutually crossed and butted is adopted, the steel rail joint expansion joint is divided into two halves at different positions in the front and back, and bang which is used as sound when the rail head joint is impacted by the train wheels in the past can not be generated when a train runs at high speed. The width to inserting formula rail expansion joint middle part rail web has been thickened simultaneously, just so can not influence the safety problem of atress deformation when the train is gone at a high speed, the problem of high-speed rail expend with heat and contract with cold has just so fine solution. The opposite-insertion type steel rail expansion joint not only saves the construction cost of a high-speed rail, improves the construction speed of the high-speed rail, but also greatly reduces the maintenance cost of the high-speed rail.)

1. The utility model provides a to inserting formula rail expansion joint, goes up connecting rail (1), middle part rail (6), rear portion rail (7), and goes up fixed muscle (4), lower fixed muscle (5), is a whole, and two to inserting formula rail expansion joint butt joint back, middle part rail (6) both sides are connected with two half arc frid (8), lock with C shape pincers (11).

2. A counter inserted steel rail expansion joint according to claim 1, wherein the rear end of the upper connecting rail (1) is connected with the front end of the middle side of the upper half part of the middle rail (6) into a whole, the outer side of the lower part of the upper connecting rail (1) is connected with an upper fixing rib (4) into a whole and extends to the rear end of the middle rail (6), the angle of the front end of the upper connecting rail (1) is 45-90 degrees, the two upper connecting rails (1) are mutually crossed and inserted into the two opposite upper connecting rail grooves (2), and the front ends of the two middle rails (6) are mutually butted together.

3. The oppositely-inserted steel rail expansion joint as claimed in claim 1, wherein the rail web of the middle rail (6) is thickened to a width three times that of the rear rail (7), the other side of the middle part of the upper half part of the middle rail (6) is provided with an upper connecting rail groove (2), the size of the upper connecting rail groove is the same as that of the upper connecting rail (1), the other opposite upper connecting rail (1) can be just completely inserted into the upper connecting rail groove, the angle of the rear end of the upper connecting rail groove (2) is 45-90 degrees and is the same as that of the front end of the upper connecting rail (1), and the middle parts of the two sides of the middle rail (6) are respectively provided with a lower fixing rib (5), and the length of the middle part (6) is.

4. A counter inserted rail expansion joint according to claim 1, wherein the front end of the rear rail (7) is integrally connected to the rear end of the middle rail (6), the rear end of the rear rail (7) is integrally welded to one end of the rail to be connected, and the welding surface of the rear end of the rear rail (7) has the same size as the front surface of the rail to be connected.

5. The oppositely-inserted rail expansion joint as claimed in claim 1, wherein two semi-arc-shaped slotted plates (8) are connected to two sides of the middle rail (6), an inner slotted plate groove (9) is respectively arranged in the middle of the inner sides of the semi-arc-shaped slotted plates (8), the two semi-arc-shaped slotted plates (8) can be buckled on the upper fixing rib (4) and the lower fixing rib (5) at two sides of the middle rail (6) of the oppositely-inserted rail expansion joint, four slotted plate top wire grooves (10) are equally distributed in the middle of the back of each semi-arc-shaped slotted plate (8), and the two semi-arc-shaped slotted plates (8) can be locked through four C-shaped clamps (11) penetrating below the oppositely-inserted rail expansion joint.

Technical Field

The invention relates to a rail expansion joint with heat and contraction with cold, in particular to a mutual insertion type rail expansion joint with expansion with heat and contraction with cold for subway and high-speed rail steel rails in large temperature difference areas.

Background

Although the seamless steel rails are used for building the high-speed rail in most areas in China, the building and maintenance cost of the seamless steel rails is high, in order to solve the problem of expansion caused by heat and contraction caused by cold of the steel rails, the problem that fasteners of the steel rails are greatly added for fixing the expansion caused by heat and contraction caused by cold of the steel rails is mainly solved, the building cost and the building difficulty of the high-speed rail are increased, particularly, the high maintenance cost after the building is greatly increased, namely, the seamless steel rails are rarely used for building in high and cold areas in China, a small amount of seamless steel rails are used, and the fasteners are required to be loosened periodically for stress release, so that the maintenance cost is increased, and the fasteners are damaged.

The invention adopts the butt-joint type steel rail expansion joint welded at the two ends of the steel rail and adopts the mode of mutual cross butt joint of the upper connecting rails, the steel rail joint expansion joint is divided into two halves at different positions, namely front and back positions, when a train runs at high speed, bang noise which is generated when the train wheels strike the joint seam of the rail head is not generated, and the width of the rail web in the middle of the butt-joint type steel rail expansion joint is thickened, so that the safety problem of stress deformation of the train during high-speed running is not influenced. When the big expend with heat and contract with cold of rail difference in temperature, will follow the flexible automatic flexible of rail to inserting formula rail expansion joint, like this fine solution high-speed railway steel rail expend with heat and contract with cold's problem. The oppositely-inserted type steel rail expansion joint not only saves the construction cost of a high-speed rail and improves the construction speed of the high-speed rail, but also greatly reduces the maintenance cost of the high-speed rail.

Disclosure of Invention

In view of the present situation: the invention provides a butt-inserting type steel rail expansion joint which is simple in structure, safe, reliable and convenient to maintain, and is characterized in that the butt-inserting type steel rail expansion joint is divided into a front rail, a middle rail and a rear rail which are connected into a whole, the front rail is an upper connecting rail and is connected with one side of the middle of the upper half part of the front end of the middle rail into a whole, an upper connecting rail groove is arranged at the middle of the other side of the middle of the upper half part of the thickened rail waist of the middle rail, the opposite connecting rail is just inserted in the upper connecting rail, the rear end of the middle rail is connected with the front end of the rear rail into a whole, and the rear end of the rear rail. When two butt-joint type steel rail expansion joints are in butt joint, two upper connecting rails are mutually crossed and inserted into the opposite upper connecting rail grooves, and are also mutually crossed and pressed on each side of the thickened rail web of the opposite middle rail, so that the front ends of the two middle rails are mutually butted together, and the middle positions of the two sides of the middle rail and the outer sides of the lower parts of the upper connecting rails are respectively provided with a fixing rib. Two blocks of half arc frid of middle part rail both sides can be with two to inserting formula rail expansion joint locking through four C shape pincers, neither influence rail expend with heat and contract with cold's flexible like this, can not influence the safety problem of atress deformation when the train is high-speed to be gone yet, simultaneously because of the steel rail connects the expansion joint and separates into different positions around two halves, also can not produce like bang when the sound of train wheel striking railhead seam in the past when the train is high-speed to be gone yet.

The technical scheme is as follows:

the butt-joint type rail expansion joint comprises a front rail, a middle rail and a rear rail which are integrated, and the welding surface at the rear end of the rear rail has the same size as the front surface of the butt-joint rail and can be welded with one end of the rail into a whole. The front rail is an upper connecting rail, the rear end of the upper connecting rail is connected with one side of the upper middle part of the front end of the middle rail into a whole, the other side of the upper middle part of the middle rail is an upper connecting rail groove, when two opposite-insertion type steel rail expansion joints are in butt joint, the two opposite upper connecting rails can be inserted into the opposite upper connecting rail grooves in an intercrossing manner, the intercrossing is pressed on the widened rail waist of the opposite lower middle rail part, the front ends of the two middle rails are in butt joint with each other, and an upper fixing rib on the outer side of the lower part of the upper connecting rail extends to the rear end of the middle rail. The middle rail web is thickened to be three times as wide as the rear rail web, lower fixing ribs are respectively arranged in the middle of two sides of the thickened middle rail web and are as long as the middle rail, the rear end of the middle rail is connected with the front end of the rear rail into a whole, and the rear end of the rear rail is welded with one end of the butt-joint steel rail into a whole. After two opposite-insertion type steel rail expansion joints are well connected, two semi-arc-shaped groove plates are buckled on two sides of a middle rail, the length of the semi-arc-shaped groove plates is the length of two upper connecting rails, groove plate inner grooves in the middle of the two semi-arc-shaped groove plates are just buckled on lower fixing ribs on two sides of the middle rail and upper fixing ribs on the two upper connecting rails, four groove plate jacking grooves are uniformly distributed in the middle of the back of the semi-arc-shaped groove plates, four C-shaped clamps can be respectively locked in the four groove plate jacking grooves, the two semi-arc-shaped groove plates are locked by the four C-shaped clamps penetrating through the bottoms of the opposite-insertion type steel rail expansion joints, the expansion of the opposite-insertion type steel rail expansion joints generated when the steel rails expand with heat and contract with cold is not influenced, and the safety problem that the wheels of a train deform due to stress of the opposite-insertion type steel.

When two butt joint formula rail expansion joint docks, connect the rail intercrossing to insert the relative last rail groove the inside of connecting of two, connect the rail expansion joint to inserting like this and connect the rail front end on two relatively separately, go up the angle that connects rail front end and go up the rail groove rear end and be 45 degrees to between the 90 degrees, when train wheel passes through any section rail like this, just like a complete seamless rail, can not be because the train high-speed bang of traveling with train wheel striking railhead seam in the past when traveling as sound. Therefore, the problem of expansion caused by heat and contraction caused by cold of the steel rail is solved, and the safety problem of the train in high-speed running can not be caused.

The front rail is an upper connecting rail, the rear end of the upper connecting rail is connected with the front end of the middle half of the upper half of the middle rail into a whole, and the outer side of the lower part of the upper connecting rail is connected with an upper fixing rib into a whole and is extended to the rear end of the middle rail.

To inserting formula rail expansion joint, the web of middle part rail thickens the triple width to the web of rear portion rail, the first upper connecting rail rear end opposite side of middle part rail is a last connecting rail groove, is the same with last connecting rail size, when two butt joint formula rail expansion joint connect, connecting rail intercrossing inserts relative two and goes up connecting rail groove the inside, middle part rail both sides in the middle of respectively have a lower fixed muscle to be connected with middle part rail as long as the middle part rail and become an organic whole.

The front side of the butt joint steel rail expansion joint is provided with a front rail welding surface, a rear rail welding surface and a butt joint steel rail welding surface, wherein the front end of the rear rail is connected with the rear end of the middle rail into a whole, and the rear end of the rear rail is welded with one end of the butt joint steel rail into a whole.

The middle parts of the inner sides of the two semi-arc groove plates on the two sides of the oppositely-inserted steel rail expansion joint are respectively provided with a groove plate inner groove, the back surfaces of the two semi-arc groove plates are equally divided into four groove plate top thread grooves, the length of each semi-arc groove plate is the length of two upper connecting rails, the two sides of the middle rail are locked by C-shaped pliers after the two semi-arc groove plates are connected in an abutting mode, and the groove plate inner grooves of the semi-arc groove plates are buckled on two upper fixing ribs and two lower fixing ribs.

Drawings

FIG. 1 is an enlarged front structural view of the oppositely inserted rail expansion joint of the present invention.

FIG. 2 is an enlarged side view of the single expansion joint of the present invention.

Fig. 3 is a schematic view of two butt-jointed overhead structures of the butt-joint type rail expansion joint of the present invention.

Detailed Description

The invention is further described below with reference to the accompanying drawings and specific embodiments.

With reference to the accompanying drawings: the opposite-insertion type rail expansion joint is shown in figures 1 to 3, wherein (1) an upper connecting rail, (2) an upper connecting rail groove, (3) a thickened rail web, (4) an upper fixing rib, (5) a lower fixing rib, (6) a middle rail, (7) a rear rail, (8) a semi-arc-shaped groove plate, (9) a groove plate inner groove, (10) a groove plate top thread groove, and (11) C-shaped pliers are given in the figures.

To inserting formula rail expansion joint picture 1 to 3 show, go up connecting rail (1) rear end and middle part rail (6) front end first middle one side in the middle of and connect as an organic whole, middle part rail (6) first middle opposite side be one go up connecting rail groove (2), relative last connecting rail (1) can be complete insert relative last connecting rail groove (2) the inside, go up connecting rail (1) lower part outside and be one go up fixed muscle (4), prolong to middle part rail (6) rear end. Middle part rail (6) thickening web (3) thickens to the triple width of rear portion rail (7) web, respectively has one down fixed muscle (5) in the middle of middle part rail (6) both sides, and is the same with middle part rail (6) length, and middle part rail (6) rear end is connected with rear portion rail (7) front end and becomes an organic whole. The rear end of the rear rail (7) is welded with one end of the butt-joint steel rail into a whole. Two semi-arc frid (8) are connected to middle part rail (6) both sides, are the length of connecting rail (1) on two, have a frid inside groove (9) in the middle of semi-arc frid (8) inboard, and the back middle part is equallyd divide and is equipped with four frid jackscrew grooves (10), and two semi-arc frid (8) can be through locking to four C shape pincers (11) that insert formula rail expansion joint bottom and pass.

The invention is realized by welding two ends of the steel rail to be connected with the rear end of the oppositely inserted steel rail expansion joint into a whole, when the steel rail is laid, two welded oppositely-inserted steel rail expansion joints are mutually butted, when two upper connecting rails (1) are respectively inserted into two opposite upper connecting rail grooves (2) in a mutually crossed manner, at the moment, the front ends of two middle rails (6) are mutually butted together, then two semi-arc groove plates (8) are buckled at the two sides of the middle rails (6), the groove plate inner grooves (9) respectively buckle the upper fixing ribs (4) and the lower fixing ribs (5) at the two sides, then four C-shaped clamps (11) are used for locking the two semi-arc groove plates (8) through penetrating and locking the bottom of the oppositely inserted steel rail expansion joint in the groove plate top thread grooves (10), therefore, the expansion of the inserted steel rail expansion joint caused by heat expansion and the contraction caused by cold contraction are not influenced, and the problem of stress deformation of the inserted steel rail expansion joint when a train runs at a high speed is also not influenced. Because the expansion joint of the oppositely-inserted steel rail expansion joint is divided into two parts at different positions in front and at the back by the two upper connecting rails (1) which are mutually crossed and oppositely inserted, the train wheels run at any section of the oppositely-inserted steel rail expansion joint just like running on a seamless steel rail, and bang which can not generate the train wheels to impact the joint seam of the rail head is not generated as sound. Therefore, the problem of expansion with heat and contraction with cold of the high-speed rail steel rail is really solved.