CN212223468U - Height-adjustable heavy-load sleeper - Google Patents

Abstract

The utility model discloses a height-adjustable's heavy load sleeper for solve current heavy load sleeper because of the fracture scheduling problem that the atress is uneven and lead to, its structure includes: the sleeper is divided into an upper part and a lower part, the upper part and the lower part are poured by two kinds of concrete with different strength grades, the lower sleeper mainly bearing force is poured by the concrete with higher strength grade, the upper sleeper is not a part mainly bearing force, and the concrete with lower strength grade is adopted, so that the cost is saved; in addition, a bearing device is arranged in the upper pillow block and connected with the fixed block, so that gravity is dispersed, the stress of the pillow block is more balanced, and the situations that the pillow block is cracked due to overlarge local stress are avoided.

Description

Height-adjustable heavy-load sleeper

Technical Field

The utility model belongs to the rail transport equipment field, concretely relates to height-adjustable's heavy load sleeper.

Background

The heavy haul railway is a special type of a special freight railway, is specially used for transporting large goods, has great requirement on the load carrying capacity of a train, needs to meet two conditions of 8000t or more of traction quality, 270kN or more of axle weight and more of annual carrying capacity of at least 150km line section more than 40Mt, has the characteristics of great axle weight, great traction quality and great carrying capacity, and mostly adopts train marshalling forms such as units, combinations and the like, so the pressure of the train on a track is higher in the using process, the pressure to be borne by the sleeper is higher, the heavy haul sleeper widely adopted at present is prestressed concrete sleeper, the using requirement of the heavy haul sleeper can be met through reasonable reinforcement design, the production of the concrete sleeper is simple, the cost is lower, but because of the use in the heavy haul railway, the overweight can directly act in a rail bearing groove, and the contact area of the sleeper and the rail is smaller, the gravity completely acts on the rail bearing groove part, the stress on the sleeper is extremely unbalanced, the local stress is overlarge, cracks are easily generated between the position with larger stress and the position with smaller stress, the service life of the sleeper is influenced, and the rail bearing groove part with larger stress can be abraded with the rail, so that the rail bearing groove is deformed, and the connection stability is influenced; in addition, the height of the sleeper in the prior art cannot be changed once the sleeper is formed, and when the height of the sleeper is required to be adjusted, only the track can be replaced or the sleeper can be manufactured again, so that the cost is additionally increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a height-adjustable's heavy load sleeper, not only can be convenient carry out altitude mixture control, but also the atress in the balanced use that can also be better.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a height-adjustable heavy-load sleeper comprises a sleeper block and a fixed block, wherein the cross section of the sleeper block is trapezoidal, the bottom surface with a larger area is fixed on a roadbed, the top surface of the sleeper block is fixedly provided with two connecting positions, the connecting positions and the upper sleeper block are integrally formed, and the connecting positions are prismatic platforms with square bottom surfaces and the same length as the width of the top surface of the sleeper; the fixed block sequentially comprises from top to bottom: go up fixed block, cushion, lower fixed block, go up fixed block, cushion, lower fixed block and all be provided with the same and a plurality of screw thread through-holes that correspond in position, and be provided with the same and screw thread blind hole that corresponds in position on the top surface of connecting the position, will go up fixed block, cushion, lower fixed block through the bolt and can dismantle to fix on connecting the position.

Furthermore, the pillow block can be divided into an upper pillow block and a lower pillow block, wherein the strength grade of concrete used by the lower pillow block is higher than that used by the upper pillow block, a force bearing device is arranged in the upper pillow block, and the force bearing device is connected with the fixed block.

Further, the force bearing device comprises: the bearing plate is positioned on a boundary line between the upper pillow block and the lower pillow block, the bearing plate and the lower fixed block are the same in shape and larger in area than the lower fixed block, the bearing plate is provided with a bearing platform, the bearing platform is a circular table, the bottom surface of the bearing platform is fixed on the bearing plate, the top surface of the bearing platform is fixed on the lower fixed block, the projection of the axis of the bearing platform on the bearing plate is positioned on the geometric center of the bearing plate, the bearing platform is outwards obliquely provided with a plurality of supporting columns, and two ends of each supporting column are respectively fixed on the lower fixed block and the bearing plate.

Furthermore, a reinforcing frame is also arranged in the lower pillow block.

The utility model discloses following beneficial effect has at least:

(1) the track is fixed on the fixed block, is provided with the detachable cushion in the fixed block, through the not cushion of replacement co-altitude to reach the effect of nimble height-adjusting, can use with different service environment, the practicality is higher.

(2) The bearing device is arranged in the upper pillow block of the pillow block and connected with the fixed block, the gravity of the rail borne by the fixed block can directly act on the bearing plate, and the area of the bearing plate is larger than that of the connection position, so that the gravity is dispersed, the problem of overlarge local stress is relieved, and the stress distribution is more balanced.

(3) The sleeper block is divided into an upper part and a lower part, wherein a steel bar rack is embedded in the lower sleeper block to increase the strength of the lower sleeper block, the concrete strength grade of the lower sleeper block is higher than that of the upper sleeper block, and the cost is saved.

Drawings

The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.

In the drawings:

fig. 1 schematically shows a state diagram of the use of the invention;

fig. 2 schematically shows a structural schematic view of a top view angle of the present invention;

FIG. 3 is a schematic structural view showing a cross section taken along line A-A in FIG. 2;

wherein the figures include the following reference numerals:

1-pillow block, 11-connecting position, 12-upper pillow block, 13-lower pillow block, 131-reinforcing frame, 21-upper fixing block, 22-lower fixing block, 23-cushion block, 24-bolt and 3-track.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure; unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application; as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Spatially relative terms, such as "above … …," "above … …," "above … …, above," "overlying" and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures; it will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures.

Examples

As shown in figures 1-3 is a height-adjustable's heavy load sleeper for solve current heavy load sleeper because of the fracture scheduling problem that the atress is uneven and lead to, its structure includes: the sleeper block 1, the fixed block is installed on tie position 11 of the sleeper block 1, the fixed block fixes the orbit 3, can dismantle the cushion 23 in the fixed block, can adjust the height of the orbit 3 through changing the cushion 23 of different heights, make it meet the operating requirement, in addition, the sleeper block 1 is divided into upper and lower two parts, the upper and lower two parts use the concrete of two kinds of different intensity grades to pour, the lower sleeper block 13 of the main bearing force adopts the concrete pouring of the higher intensity grade, the upper sleeper block 12 is not the part of the main bearing force, adopt the concrete of the lower intensity grade, therefore save the cost more; in addition, a bearing device is arranged in the upper pillow block 12 and connected with the fixed block to disperse gravity, so that the stress of the pillow block 1 is more balanced, and the conditions that the pillow block 1 is cracked due to overlarge local stress are avoided.

As shown in fig. 1, a rail 3 is placed on a pillow block 1, the pillow block 1 is a columnar structure with a trapezoidal section, wherein the bottom surface with a large area is fixed on a roadbed, the top surface of the pillow block 1 is fixed with two connecting positions 11, the connecting positions 11 and an upper pillow block 12 are integrally formed, the connecting positions 11 are prismatic platforms with square bottom surfaces and the same length as the width of the top surface of the pillow block, the height of the connecting positions 11 is 1/5-2/5 of the height of the pillow block 1, the top surface of the connecting positions 11 is provided with a fixing block, and the top surface of the fixing block is in contact with the rail 3 and fixes the rail 3.

As shown in fig. 3, the fixing block includes: an upper fixing block 21, a lower fixing block 22 and a cushion block 23, wherein the upper fixing block 22 and the lower fixing block 22 are completely the same, and a plurality of threaded through holes are also arranged at the same positions on the upper fixing block and the lower fixing block, the threaded through holes are the same, the top surface of the connecting position 11 is also provided with a threaded blind hole with the same position as the upper and lower fixing blocks 22, the depth of the threaded hole on the connecting position 11 does not exceed the height of the connecting position 11, a cushion block 23 is also arranged between the upper fixing block 22 and the lower fixing block 22, the cushion block 23 is provided with a threaded through hole with the same position as the upper fixing block 22 and the lower fixing block 22, the shape of the threaded hole is the same, when in installation, the bolt 24 is screwed into the threaded hole, the upper fixing block 21, the cushion block 23 and the lower fixing block 22 are detachably connected through the bolt 24, therefore, when the height is required to be adjusted, only the cushion block 23 needs to be replaced by the cushion block 23 with different heights, the height can be flexibly adjusted according to the use condition, and the height adjusting device is more flexible to use.

It should be noted that: as shown in fig. 2, the bolts 24 are located on both sides of the rail 3 and are used for fixing fasteners, through which the rail 3 is fixed.

Further, the pillow block 1 is composed of two kinds of concrete with different strength grades, as shown in fig. 3, the pillow block 1 can be divided into an upper pillow block 12 and a lower pillow block 13, the upper pillow block and the lower pillow block 13 are tightly connected, that is, the lower pillow block 13 is poured in advance in the pouring stage, and then the upper pillow block 12 is poured, so that the upper pillow block and the lower pillow block can be naturally tightly connected into a whole after being formed, wherein the concrete wall of the lower fixing block 22 has a higher strength grade and is a main bearing part, and the higher the strength grade, the higher the cost of the concrete is, so the cost of the sleeper structure in the embodiment is saved, the upper pillow block 12 is provided with a bearing device, the bearing device is connected with the fixing blocks, and the gravity borne by the track 3 in the using process is dispersed, and the bearing device: the bearing plate 41 is positioned on the boundary line between the upper pillow block 13 and the lower pillow block 13, the bearing plate 41 and the lower fixed block 22 are the same in shape and are square, but the side length of the bearing plate 41 is larger than the length of the lower fixed block, the bearing plate 41 is provided with a bearing platform 43, the bearing platform 43 is a circular table, the bottom surface of the bearing platform is fixed on the bearing plate 41, the top surface of the bearing platform is fixed on the lower fixed block 22, the projection of the axis of the bearing platform 43 on the bearing plate 41 is positioned on the geometric center of the bearing plate 41, the bearing platform 43 is provided with a plurality of supporting columns 42 which are inclined outwards, the two ends of each supporting column 42 are respectively fixed on the lower fixed block 22 and the bearing plate 41, when the supporting is stressed, according to the stress analysis, the gravity of the rail 3 acts on the fixed blocks, the fixed blocks are stressed, the gravity is transmitted downwards through the bearing platform 43 and the supporting columns 42, when the force is transmitted through the, when transmitting through the support column 42, the force acting on the bearing plate 41 is the same as the direction of the support column 42, so that the gravity is uniformly dispersed on the bearing plate 41, the gravity borne by the track is transmitted to the bearing plate 41 through the bearing device, and the area of the bearing plate 41 is larger than that of the lower fixed block, so that the local stress of the sleeper is reduced, and the problems of cracking and the like caused by larger stress of the fixed block are avoided.

It should be noted that: the lower pillow block 13 is further provided with a steel bar frame 131, and the overall strength of the lower pillow block 13 is improved by the steel bar frame 131.

As a preferred embodiment, the diameter of the bottom surface of the bearing platform is 1/4 of the side length of the bearing plate, and the included angle between the supporting column and the bearing plate is 20-45 degrees.

In a preferred embodiment, the upper pillow block adopts a concrete strength grade of C20, and the lower pillow block adopts a concrete strength grade of C60.

In this embodiment, the bolts, the reinforcing frame and the rails are well known in the art and thus will not be described in detail.

Claims (4)

1. The utility model provides a height-adjustable's heavy load sleeper which characterized in that: the cross section of the pillow block is trapezoidal, wherein the bottom surface with larger area is fixed on a roadbed, the top surface of the pillow block is fixed with two connecting positions, the connecting positions and the upper pillow block are integrally formed, and the pillow block can be divided into an upper pillow block and a lower pillow block; the connecting position is a prismatic table with a square bottom surface and the length being the same as the width of the top surface of the sleeper; the fixed block sequentially comprises from top to bottom: go up fixed block, cushion, lower fixed block, go up fixed block, cushion, lower fixed block and all be provided with the same and a plurality of screw thread through-holes that correspond in position, and be provided with the same and screw thread blind hole that corresponds in position on the top surface of connecting the position, will go up fixed block, cushion, lower fixed block through the bolt and can dismantle to fix on connecting the position.

2. A height adjustable heavy duty sleeper as defined in claim 1 wherein: the concrete strength grade of the lower sleeper block is higher than that of the upper sleeper block, and a bearing device is arranged in the upper sleeper block and connected with the fixed block.

3. A height adjustable heavy duty sleeper as defined in claim 2 wherein: the force bearing device comprises: the bearing plate is positioned on a boundary line between the upper pillow block and the lower pillow block, the bearing plate and the lower fixed block are the same in shape and larger in area than the lower fixed block, the bearing plate is provided with a bearing platform, the bearing platform is a circular table, the bottom surface of the bearing platform is fixed on the bearing plate, the top surface of the bearing platform is fixed on the lower fixed block, the projection of the axis of the bearing platform on the bearing plate is positioned on the geometric center of the bearing plate, the bearing platform is externally obliquely provided with a plurality of supporting columns, and two ends of each supporting column are respectively fixed on the lower fixed block and the bearing plate.

4. A height adjustable heavy duty sleeper as defined in claim 2 wherein: and a reinforcing steel bar frame is also arranged in the lower pillow block.

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