阅读说明：本技术 一种加强型钢轨连接头 (Reinforced steel rail connector ) 是由 盛平 张涛 于广云 王东权 于 2019-12-04 设计创作，主要内容包括：本发明公开了一种加强型钢轨连接头,包括钢轨体、长夹板和加强板；钢轨体截面为“工”字型,包括两块互相配合安装的第一钢轨体和第二钢轨体；第一钢轨体设有“L”状伸出部,第二钢轨体设有与伸出部配合的倒“L”状啮合部；长夹板包括两块相同的夹板,固定安装于“工”字型钢轨体的两侧凹陷处；加强板截面为“U”型,从下方套装在长夹板的外侧；本发明提供的加强型钢轨连接头,一方面克服了接头处钢轨的不连续性,降低了钢轨接头处不平顺的影响,从而降低了轮轨冲击附加动力作用和噪声；另一方面提高了钢轨接头的抗弯性能,提高了钢轨体之间连接的稳定性和列车行驶的安全性和平稳性。(The invention discloses a reinforced steel rail connector which comprises a steel rail body, a long clamping plate and a reinforcing plate, wherein the steel rail body is provided with a long clamping plate; the cross section of the steel rail body is in an I shape and comprises a first steel rail body and a second steel rail body which are mutually matched and arranged; the first steel rail body is provided with an L-shaped extending part, and the second steel rail body is provided with an inverted L-shaped engaging part matched with the extending part; the long clamping plates comprise two same clamping plates and are fixedly arranged at the concave parts at the two sides of the I-shaped steel rail body; the section of the reinforcing plate is U-shaped and is sleeved on the outer side of the long clamping plate from the lower part; the reinforced steel rail connector provided by the invention overcomes the discontinuity of steel rails at the connector and reduces the influence of irregularity at the steel rail connector, thereby reducing the impact additional power action and noise of wheel rails; on the other hand, the bending resistance of the steel rail joint is improved, and the connection stability between the steel rail bodies and the safety and the stability of train running are improved.)

1. The utility model provides a strenghthened type rail connector which characterized in that: comprises a steel rail body (1), a long splint (2) and a reinforcing plate (3); the section of the steel rail body (1) is I-shaped, and the steel rail body comprises a first steel rail body (11) and a second steel rail body (12) which are arranged in a matched mode; the first steel rail body (11) is provided with an L-shaped extending part, and the second steel rail body (12) is provided with an inverted L-shaped engaging part matched with the extending part; the long clamping plates (2) comprise two same clamping plates and are fixedly arranged at the concave parts at the two sides of the I-shaped steel rail body (1); the section of the reinforcing plate (3) is U-shaped and is sleeved on the outer side of the long splint (2) from the lower part.

2. A reinforced rail joint according to claim 1, wherein: a plurality of bolt holes are correspondingly formed in the steel rail body (1), the long clamping plate (2) and the reinforcing plate (3), and the bolt holes are uniformly arranged along the direction of the steel rail body and are sequentially connected and fixed through bolts.

3. A reinforced rail joint according to claim 2, wherein: the reinforcing plate (3) is also provided with a row of bolt through holes on the side surface of the U-shaped structural bottom plate, and the bolts are connected and fastened through the bolts so as to penetrate through the two sides of the reinforcing plate from the bottom surface of the steel rail body and further clamp the reinforcing plate (3).

4. A reinforced rail joint according to claim 2 or 3, wherein: the mounting directions of the two adjacent bolts are opposite.

5. A reinforced rail joint according to claim 1, wherein: the surfaces of the L-shaped protruding part and the inverted L-shaped engaging part are wrapped with a protective layer (5), and the protective layer is preferably an epoxy resin layer.

6. A reinforced rail joint according to claim 1, wherein: the surfaces of the L-shaped extension part and the inverted L-shaped engagement part are wrapped with a protective layer (5), and the protective layer is preferably a paint layer.

7. A reinforced rail joint according to claim 1, wherein: the contact part of the upper surface of the U-shaped bottom plate of the reinforcing plate (3) and the bottom surface of the steel rail body (1) is coated with a polyurethane protective film (6).

Technical Field

The invention relates to the technical field of rail engineering, and mainly relates to a reinforced steel rail connector.

Background

At present, the railway in China is developing towards high speed and heavy load, and the requirement on the track is higher and higher. As trains are accelerated, seamless lines are developed more and more, but in the business railways of 7 km or more in the country, about 5 km or more is a short rail section (40 pairs of joints per km). Rail joints remain even in long rail buffers, jointless tracks, and the like. The steel rail joint is one of three weak links of a railway line, and a gap needs to be reserved for connection between steel rail bodies due to the expansion caused by heat and contraction caused by cold of temperature, so that the continuity of the geometric shape of the steel rail is damaged to a certain extent by the joint, namely, the joint is unsmooth. After the continuity of the steel rail is damaged, the wheels pass through the joint of the steel rail to generate a large impact additional power effect of the wheel rail, so that large noise is generated, the running speed of the train is reduced, the damage of the steel rail body near the joint and the abrasion of the wheels of the train are increased, the service life of the steel rail is shortened, and the running safety and the running stability of the train are influenced.

The rail joint is mainly composed of members such as a rail, a clamp plate, a bolt, and the like, and the clamp plate is a main connecting member of the rail joint, and the bending rigidity of the clamp plate is preferably the same as the bending rigidity of the rail, however, the bending rigidity of a pair of clamp plates is generally 23% to 30% of the rail parent metal due to the limitation of the shape of the rail, while the bending rigidity of a full-section rail joint is most commonly used for a heavy haul railway, and is also 30.7% of the rail parent metal. In practical application, the phenomena of rail head peeling, rail saddle abrasion, rail head crushing, clamping plate fracture and the like often occur to the rail joint. The reason is analyzed, mainly because the bending rigidity of the splint is greatly different from the steel rail base metal, the joint is easy to generate transverse and vertical displacement when a train passes, the carrying capacity of the train is reduced, and the traffic volume is reduced.

Disclosure of Invention

The purpose of the invention is as follows: in order to solve the problems of rail head peeling, rail saddle abrasion, rail head crushing, clamping plate fracture and the like caused by inconsistent bending rigidity in the background technology, the invention provides a reinforced steel rail connector which solves the technical problems of rail joint irregularity and insufficient bending rigidity of a joint clamping plate.

The technical scheme is as follows: in order to achieve the purpose, the invention adopts the technical scheme that:

a reinforced steel rail connector comprises a steel rail body, a long clamping plate and a reinforcing plate; the cross section of the steel rail body is in an I shape and comprises a first steel rail body and a second steel rail body which are mutually matched and arranged; the first steel rail body is provided with an L-shaped extending part, and the second steel rail body is provided with an inverted L-shaped engaging part matched with the extending part; the long clamping plates comprise two same clamping plates and are fixedly arranged at the concave parts at the two sides of the I-shaped steel rail body; the cross section of the reinforcing plate is U-shaped and is sleeved on the outer side of the long clamping plate from the lower part.

Furthermore, a plurality of bolt holes are correspondingly formed in the steel rail body, the long clamping plate and the reinforcing plate, and the bolt holes are uniformly arranged along the direction of the steel rail body and are sequentially connected and fixed through bolts.

Furthermore, the reinforcing plate is also provided with a row of bolt through holes on the side surface of the U-shaped structural bottom plate, and the reinforcing plate is connected and fastened through bolts, so that the bolts penetrate through the two sides of the reinforcing plate from the bottom surface of the steel rail body, and the reinforcing plate is further clamped.

Further, the installation direction between two adjacent bolts is opposite.

Furthermore, the surfaces of the L-shaped protruding part and the inverted L-shaped engaging part are wrapped with protective layers, and the protective layers are preferably epoxy resin layers.

Furthermore, the surfaces of the L-shaped protruding part and the inverted L-shaped engaging part are wrapped with protective layers, and the protective layers are preferably paint layers.

Furthermore, a polyurethane protective film is sprayed on the contact part of the upper surface of the U-shaped bottom plate of the reinforcing plate and the bottom surface of the steel rail body.

Has the advantages that: the reinforced steel rail connector provided by the invention overcomes the discontinuity of steel rails at the connector and reduces the influence of irregularity at the steel rail connector, thereby reducing the impact additional power action and noise of wheel rails; on the other hand, the bending resistance of the steel rail joint is improved, and the connection stability between the steel rail bodies and the safety and the stability of train running are improved.

Drawings

FIG. 1 is a schematic view of the overall structure of a reinforced rail joint according to the present invention;

FIG. 2 is a schematic structural view of a rail body;

FIG. 3 is a schematic view of a long splint;

FIG. 4 is a schematic view of the long splint assembly;

FIG. 5 is a schematic illustration of a stiffener structure;

fig. 6 is a schematic view of the stiffener assembly.

Description of reference numerals:

1-a rail body; 11-a first rail body; 12-a second rail body; 2-long splint; 3-a reinforcing plate; 4-a bolt; 5-a protective layer; 6-polyurethane protective film.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

The reinforced rail joint shown in fig. 1 comprises a rail body 1, a long clamping plate 2 and a reinforcing plate 3. The section of the steel rail body 1 is in an I shape and comprises a first steel rail body 11 and a second steel rail body 12 which are mutually matched and arranged. The first rail body 11 is provided with an L-shaped protruding portion, and the second rail body 12 is provided with an inverted L-shaped engaging portion engaged with the protruding portion, and the specific structure is shown in fig. 2. The surfaces of the L-shaped extension part and the inverted L-shaped engagement part are wrapped with protective layers. The protective layer is preferably an epoxy or paint layer. The steel rail body connectors are in Z-shaped staggered connection and can be used for eliminating the influence of joint rail gaps. The connecting part adopts epoxy resin or a paint layer, and can further play a role in preventing abrasion.

The long clamping plate 2 comprises two identical clamping plates which are fixedly arranged at the concave parts at the two sides of the I-shaped steel rail body 1, and the specific structure is shown in figures 3-4. The section of the reinforcing plate 3 is U-shaped and is sleeved outside the long splint 2 from the lower part. The reinforcing plates 3 surround the two sides of the long clamping plate and the lower part of the steel rail body, so that the bending rigidity of the steel rail joint can be effectively improved, and the specific structure is shown in figures 5-6. The contact part of the upper surface of the U-shaped bottom plate of the reinforcing plate 3 and the bottom surface of the steel rail body 1 is also coated with a polyurethane protective film 6 for reducing the friction between the reinforcing plate 3 and the bottom surface of the steel rail body.

A plurality of bolt holes are correspondingly formed in the steel rail body 1, the long clamping plate 2 and the reinforcing plate 3, the bolt holes are evenly arranged along the direction of the steel rail body and are sequentially connected and fixed through bolts. The installation directions of two adjacent bolts are opposite, and the whole steel rail body structure can be further fastened.

The reinforcing plate 3 is also provided with a row of bolt through holes on the side surface of the U-shaped structural bottom plate, and the bolt through holes are connected and fastened through bolts, so that bolts penetrate through the two sides of the reinforcing plate from the bottom surface of the steel rail body, and further clamp the reinforcing plate 3. Similarly, the installation direction between two adjacent bolts is opposite.

During installation, firstly, the convex curve side wall of the long clamping plate and the concave curve side wall contact part of the steel rail body are installed in an aligning mode, then the straight line side wall of the long clamping plate and the side wall contact part on the upper portion of the reinforcing plate are installed in an aligning mode, the steel rail body, the long clamping plate and the reinforcing plate are connected into a whole through bolts and nuts, adjacent bolts are installed in the opposite direction, and the bolts connected with the lower portions of the two sides of the reinforcing plate are also installed in the opposite direction.

The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.