CN214028295U

CN214028295U - Contact net davit bottom plate suitable for railway tunnel pre-buried channel skew environment

Info

Publication number: CN214028295U
Application number: CN202022397631.5U
Authority: CN
Inventors: 文博; 郭云飞; 闫旭阳
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-26
Filing date: 2020-10-26
Publication date: 2021-08-24
Anticipated expiration: 2030-10-26

Abstract

The utility model belongs to the technical field of railway tunnel construction, in particular to a contact net davit bottom plate suitable for railway tunnel pre-buried channel skew environment, which comprises a rectangular plate body with plate size of 510mm long and 500mm wide, wherein four corners of the rectangular plate body are respectively provided with a fixed punch hole group, the fixed punch hole group comprises a strip-shaped hole with the length direction parallel to the long edge of the rectangular plate body, and a circular hole with the original point collinear with the central axis of the strip-shaped hole and the diameter consistent with the width of the strip-shaped hole, and the circular hole is positioned at one end of the strip-shaped hole far away from the edge of the rectangular plate body; and, between two bar holes on the same side of the rectangular plate body, the center distance is 400mm, and the center distance between the bar hole of fixed punch combination and the circular port is the same, is the contact net davit bottom plate that a trompil design integrated design, can adapt to the single skew of most pre-buried channel or the equal skew problem of two root.

Description

Contact net davit bottom plate suitable for railway tunnel pre-buried channel skew environment

Technical Field

The utility model belongs to the technical field of the railway tunnel construction, especially, relate to a contact net davit bottom plate suitable for railway tunnel pre-buried channel incline environment.

Background

In the construction of the electrified railway, a power supply contact network is an important component of networking, the contact network is fixed in a tunnel in the road construction process by adopting a hanging column type chain type suspension fixing in the clearance height of the tunnel when meeting the tunnel,

the concrete structure of the prior hanging post is disclosed in the Chinese utility model patent document with the publication number of CN206336154U, the publication time of 7 months and 18 days in 2017 and the name of 'a railway contact net hanging post', and in the result of the contact net hanging post disclosed in the prior art, the suspension top plate is welded at the upper end of the rectangular tube in an inclined manner, the plugging plate is welded at the lower end port of the rectangular tube, the two hemispherical cover bodies are symmetrically attached together in a mirror image manner to form a sphere with a spherical cavity inside, the parts of the two hemispherical covers which are jointed together extend outwards to form a fixed plate, the surfaces of the two hemispherical covers are provided with through slots, one end of one of the hemispherical cover bodies is welded on the fixed seat, a rotating ball with the same size as the spherical cavity is arranged in the spherical cavity, one end of the connecting rod is welded on the suspension baseplate and the other end of the connecting rod passes through the slot and is welded on the rotating ball. The upper ends of the suspension top plate and the rectangular pipe are welded in an inclined mode, and the suspension bottom plate capable of rotating for a certain angle is additionally arranged at the lower end of the rectangular pipe, so that the space adaptability and the stability of the suspension column are enhanced.

However, the contact net davit bottom plate in the scheme is still of the conventional design, the size of the contact net davit bottom plate in the existing tunnel is generally 400 x 400mm, and a long hole with the length of 20mm is formed, as shown in figure 1, the contact net davit bottom plate can only meet the requirement of installation of an embedded channel within the range of 380 mm-420 mm, but all sides of construction quality cannot be controlled, holes must be redesigned or an explanted channel is adopted for the channels smaller than 380mm and larger than 420mm according to the actual construction condition, great waste is caused to manpower and financial resources, when the holes and the explanted channel are redesigned, the construction period is delayed, the phenomenon of later-period work driving is caused, the railway construction quality is seriously influenced, and hidden troubles are buried for later-period operation maintenance. The explanted channel is a channel embedded at the top of the tunnel hole, and is easy to fall off in the operation process, thereby causing serious influence on the railway traffic safety.

Disclosure of Invention

In order to overcome the problem and not enough that exist among the above-mentioned prior art, the utility model aims at providing a trompil design integrated design, can adapt to the contact net davit bottom plate of the single incline of most pre-buried channel or the equal incline problem of two roots.

The utility model provides a contact net davit bottom plate suitable for railway tunnel embedded channel incline environment, including the rectangular plate body that the plate size is long 510mm, wide 500mm, fixed punch combination has been seted up respectively to four angles of rectangular plate body, fixed punch combination includes the bar hole that length direction and rectangular plate body long limit are parallel to and the centre of a circle and the collinear circular port of bar hole axis, diameter and the unanimous of bar hole width, and the length in bar hole is greater than 20mm, and the circular port all is located the one end at rectangular plate body edge is kept away from in the bar hole, is about to fix the hole design of usefulness for the combination of bar hole and round hole, and the round hole realizes the location, and the bar hole then can the adaptability adjust the fixed position, according to the actual use demand, can select the use in circular port and bar hole thereby realize the fault-tolerance in the certain extent; and, between two bar holes on the same side of the rectangular plate body, the center distance is 400mm, the center distance between the bar hole of fixed punch combination and the circular port is the same, can confirm the pitch-row on the pre-buried groove width of normal construction basically like this, only need carry out the practicality adjustment of miniscope when installing and using, compare in prior art 20 mm's slot hole, the adjustable scope itself of this structure just is greater than 20mm, and cooperate the round hole location again, the actual adjustable scope can reach 100mm, and the allowed range of construction error has been covered.

Further, the both ends in bar hole are semi-circular, and semi-circular radius R with the radius of circular port is unanimous, and the semicircle at both ends is also for the edge restriction to fixing bolt to the design like this, when selecting the bar hole to fix, also more firm, it is difficult for producing the vibration error accumulation also not to have the clearance.

Preferably, the interval between the semicircular centre of a circle in bar hole both ends equals the interval between the semicircular centre of a circle in rectangular plate body edge one end is kept away from with the bar hole in the circular hole centre of a circle, and the direct interval in circular hole and bar hole constitutes basic fixed adjustment distance promptly, and this fixed adjustment distance also can be offset in reality to the adjustment distance in bar hole, can make up the adjustment when guaranteeing the installation and compromise the firm of installation simultaneously.

Specifically, the distance between the semicircular circle centers at two ends of the strip-shaped hole is 50mm, the center distance is 400mm, the maximum adjustable range is 300 mm-500 mm, and the maximum adjustable range far exceeds the adjustable range of the prior art.

The fixed hole groups are arranged at four corners of the rectangular plate body and are symmetrical with the longitudinal central line of the rectangular plate body and the transverse central line of the rectangular plate body, and installation errors caused by errors of the bottom plate are avoided due to the symmetrical design.

Preferably, the distance between the central axis of the strip-shaped hole and the long edge of the rectangular plate body is 50 mm.

Preferably, the vertical distance from the central point of the strip-shaped hole to the wide side of the rectangular plate body is 55 mm.

According to the rectangular plate body with the size of 510mm in length and 500mm in width, the distance between the central axis of the strip-shaped hole and the long edge of the rectangular plate body is 50mm, and the vertical distance between the central point and the wide edge of the rectangular plate body is 55mm, so that the edge strength can be guaranteed, and the maximum size can be adjusted in the largest range by utilizing the area of the plate body.

Has the advantages that:

compared with the prior art, the utility model provides a this kind of technical scheme, this davit base is through revising davit trompil size commonly used and increase behind two circle trompils, can adapt to the single incline of most pre-buried channel or the equal incline problem of two roots, this scheme davit base of use, need not design the davit bottom plate of different grade type or use external channel according to the pre-buried channel site conditions of difference again, the secondary design of design unit and the work load of construction unit have been reduced, effectively promote the construction operating efficiency of contact net davit in the tunnel, reduce the unnecessary manpower, material resources consume.

Drawings

The foregoing and following detailed description of the invention will be apparent when read in conjunction with the following drawings, in which:

FIG. 1 is a schematic diagram of a prior art structure of the present invention;

FIG. 2 is a schematic structural diagram of a preferred embodiment of the present invention;

in the figure:

1. a rectangular plate body; 2. a strip-shaped hole; 3. a circular hole.

Detailed Description

The technical solution for achieving the objectives of the present invention will be further described by using several specific examples, and it should be noted that the technical solution claimed in the present invention includes, but is not limited to, the following examples.

Example 1

The embodiment discloses a contact net davit bottom plate suitable for a railway tunnel embedded channel inclined environment, as shown in fig. 2, the plate comprises a rectangular plate body 1 with a plate size of 510mm long and 500mm wide, four corners of the rectangular plate body 1 are respectively provided with a fixed hole group, the fixed hole group comprises a strip-shaped hole 2 with the length direction parallel to the long side of the rectangular plate body 1, and a circular hole 3 with the center collinear with the central axis of the strip-shaped hole 2 and the diameter consistent with the width of the strip-shaped hole 2, wherein the length of the strip-shaped hole 2 is more than 20mm, and the circular hole 3 is positioned at one end of the strip-shaped hole 2 far away from the edge of the rectangular plate body 1, the holes for fixing are designed to be the combination of the strip-shaped holes 2 and the round holes, the round holes realize the positioning, the strip-shaped holes 2 can be adjusted to the fixed position in an adaptive way, according to actual use requirements, the circular holes 3 and the strip-shaped holes 2 can be selected to be used, so that fault tolerance within a certain range is realized; and, rectangular plate body 1 is between two bar holes 2 on the same side, the center distance is 400mm, the center distance between bar hole 2 and the circular port 3 of fixed punch combination is the same, can confirm the pre-buried groove width of normal construction with the pitch-row basically like this, only need carry out the practicality adjustment of miniscope when installing and using, compare in prior art 20 mm's slot hole, the adjustable scope itself of this structure just is greater than 20mm, and cooperate the round hole location again, the actual adjustable scope can reach 100mm, and the allowed range of construction error has been covered.

Example 2

As a more specific embodiment, on the basis of the technical solution of the above example 1, further, as shown in fig. 2, both ends of the strip-shaped hole 2 are semicircular, the radius R of the semicircular shape is consistent with the radius of the circular hole 3, the semicircular shapes at both ends are also used for limiting the edge of the fixing bolt, and the design is that when the strip-shaped hole 2 is selected for fixing, the strip-shaped hole is more stable, no gap is formed, and vibration error accumulation is not easy to generate.

Preferably, the interval between the semicircular centre of a circle in 2 both ends in bar hole equals the interval between the semicircular centre of a circle in 1 marginal one end of rectangular plate body is kept away from with bar hole 2 in the 3 centre of a circle of circular port, and circular port 3 constitutes basic fixed adjustment distance with the direct interval in bar hole 2 promptly, and this fixed adjustment distance also can be offset in reality to the adjustment distance in bar hole 2, can make up the adjustment when guaranteeing the installation and compromise the firm of installation simultaneously, and is concrete, the interval between the semicircular centre of a circle in 2 both ends in bar hole is 50mm, calculates with central distance 400mm, and the biggest adjustable range is 300mm ~500mm, and the adjustable range who far exceeds prior art scheme.

Specifically, the fixed hole groups are symmetrical about the longitudinal central line of the rectangular plate body 1 and the transverse central line of the rectangular plate body 1 at four corners of the rectangular plate body 1, and the symmetrical design avoids installation errors caused by errors of the bottom plate.

Preferably, the distance between the central axis of the strip-shaped hole 2 and the long edge of the rectangular plate body 1 is 50mm, and the vertical distance between the central point of the strip-shaped hole 2 and the wide edge of the rectangular plate body 1 is 55 mm. According to the 1 inch long 510mm of rectangular plate body, wide 500mm, the interval 50mm between 2 axis in bar hole and the long limit of rectangular plate body 1, the perpendicular distance of central point apart from the broadside of rectangular plate body 1 be 55mm can be in order to guarantee marginal strength, can utilize the plate body area to realize the adjustment in maximum range again by maximum dimension.

Claims

1. Contact net davit bottom plate suitable for railway tunnel embedded channel skew environment, its characterized in that: the rectangular plate comprises a rectangular plate body (1) with the plate size of 510mm long and 500mm wide, wherein fixed hole groups are respectively arranged at four corners of the rectangular plate body (1), each fixed hole group comprises a strip-shaped hole (2) with the length direction parallel to the long edge of the rectangular plate body (1) and a circular hole (3) with the circle center collinear with the central axis of the strip-shaped hole (2) and the diameter consistent with the width of the strip-shaped hole (2), the length of each strip-shaped hole (2) is greater than 20mm, and the circular holes (3) are all located at one end, far away from the edge of the rectangular plate body (1), of each strip-shaped hole (2); and, between two bar holes (2) on the same side of rectangular plate body (1), the center distance is 400mm, and the center distance between bar hole (2) and circular port (3) of fixed punch combination is the same.

2. The contact net davit bottom plate suitable for railway tunnel pre-buried channel skew environment of claim 1, characterized by: both ends of the strip-shaped hole (2) are semicircular, and the radius R of the semicircular shape is consistent with that of the circular hole (3).

3. The contact net davit bottom plate suitable for railway tunnel pre-buried channel skew environment of claim 2, characterized by: the distance between the semicircular circle centers at the two ends of the strip-shaped hole (2) is equal to the distance between the circle center of the circular hole (3) and the semicircular circle center at the end, far away from the edge of the rectangular plate body (1), of the strip-shaped hole (2).

4. The contact net davit bottom plate suitable for railway tunnel pre-buried channel skew environment of claim 3, characterized by: the distance between the semicircular circle centers at the two ends of the strip-shaped hole (2) is 50 mm.

5. The contact net davit bottom plate suitable for railway tunnel pre-buried channel skew environment of claim 1, characterized by: the four corners of the rectangular plate body (1) are symmetrically provided with the longitudinal central line of the rectangular plate body (1) and the transverse central line of the rectangular plate body (1).

6. The contact net davit bottom plate suitable for railway tunnel pre-buried channel skew environment of claim 5, characterized by: the distance between the central axis of the strip-shaped hole (2) and the long edge of the rectangular plate body (1) is 50 mm.

7. The contact net davit base plate suitable for railway tunnel pre-buried channel skew environment of claim 5 or 6, characterized by: the vertical distance between the central point of the strip-shaped hole (2) and the wide edge of the rectangular plate body (1) is 55 mm.