CN219096538U

CN219096538U - Hard straddling structure

Info

Publication number: CN219096538U
Application number: CN202223347274.7U
Authority: CN
Inventors: 于华贤; 陆薇; 胡维奇; 刘一蒙; 苑家伟
Original assignee: China Railway Huatie Engineering Design Group Co Ltd
Current assignee: China Railway Huatie Engineering Design Group Co Ltd
Priority date: 2022-12-13
Filing date: 2022-12-13
Publication date: 2023-05-30
Anticipated expiration: 2032-12-13

Abstract

The utility model provides a hard spanning structure which comprises upright posts, hard spanning and overhanging devices, wherein the upright posts are respectively arranged at two ends of the hard spanning, the overhanging devices are arranged on the upright posts, and the two ends of the hard spanning are respectively connected with one upright post through the overhanging devices; the cantilever device comprises a first support frame, a second support frame, a first reinforcing strip, a second reinforcing strip and a support plate, wherein the first reinforcing strip is arranged on the first support frame, the second reinforcing strip is arranged on the second support frame, one end of the support plate is connected with the first reinforcing strip, the other end of the support plate is connected with the second reinforcing strip, a first rubber gasket is arranged between the support plate and the first reinforcing strip, and a second rubber gasket is arranged between the support plate and the second reinforcing strip. The crossing is connected with the upright post through the cantilever device, so that hard crossing resonance and torsion are reduced and avoided, and the safety is improved.

Description

Hard straddling structure

Technical Field

The utility model relates to the technical field of supporting structures, in particular to a hard spanning structure.

Background

The overhead contact system hard span system (Portal Structure System) is a contact system structure system form widely applied to railway lines and is also called a portal overhead rigid contact system. The system mainly comprises a portal rigid frame structure and a carrier cable, wherein a carrier cable lifting contact line is hung on the portal rigid frame to jointly form a contact net hard crossing system. The hard straddling has the advantages of mechanical independence, no influence among tracks, small accident range, stable structure, good wind resistance and the like, and meanwhile, the hard straddling has a modularized structure, has strong interchangeability and is beneficial to mechanical processing and mechanical installation operation. Compared with the international, the method has the advantages that the method is relatively late in the start of the hard crossing field of the contact net in China, and the design, research and use of the hard crossing field of the contact net in the railway line field are gradually started in recent years in China.

Along with the vigorous development of China's high-speed railways, china's high-speed rail manufacture has become the head of the world's railway rolling stock industry, and in order to ensure the normal and safe operation of trains after leaving the factory, test operation is performed on a test line before leaving the factory. The contact net distance of the railway factory test line is short, generally 2-8 km, the span of the hard span is multiple, the switch is multiple, the speed of the test line train is slower than the normal running speed of the high-speed train, and the design of the hard span structure of the contact net can be more reasonable according to the characteristics.

The contact net structure is used as a branch of structural profession, has unique stress characteristics and complex load, and comprises hanging weight, working tension, horizontal wind load, icing load, earthquake load and the like. The hard span has the characteristics of large span and complex load, and aerodynamic instability phenomena such as wind vibration and resonance phenomenon, bending or torsion relaxation vibration, bending and torsion coupling vibration and the like of the cross wind vortex shedding can also occur, and even the structure can be bent or torsion destroyed when serious.

Disclosure of Invention

The object of the present utility model is to solve at least one of the technical drawbacks.

It is therefore an object of the present utility model to provide a stiff cross structure to solve the problems mentioned in the background art and to overcome the deficiencies in the prior art.

In order to achieve the above purpose, the utility model provides a hard spanning structure, which comprises a stand column, a hard spanning and an overhanging device, wherein the stand column is respectively arranged at two ends of the hard spanning, the overhanging device is arranged on the stand column, and the two ends of the hard spanning are respectively connected with one stand column through the overhanging device; the cantilever device comprises a first support frame, a second support frame, a first reinforcing strip, a second reinforcing strip and a support plate, wherein the first reinforcing strip is arranged on the first support frame, the second reinforcing strip is arranged on the second support frame, one end of the support plate is connected with the first reinforcing strip, the other end of the support plate is connected with the second reinforcing strip, a first rubber gasket is arranged between the support plate and the first reinforcing strip, and a second rubber gasket is arranged between the support plate and the second reinforcing strip.

Preferably, one end of the support plate is connected with the first reinforcing bar through the first screw, and the first screw passes through the first rubber gasket.

In any of the above aspects, preferably, the other end of the support plate is connected to the second reinforcement bar by the second screw, and the second screw passes through the second rubber gasket.

In any of the above embodiments, preferably, the number of the first screws is three.

In any of the above embodiments, preferably, the number of the second screws is three.

In any of the above schemes, preferably, the device further comprises a first connecting plate, wherein a plurality of first connecting holes are formed in the first connecting plate, and the first connecting plate is connected with the first bracket.

In any of the above schemes, preferably, the device further comprises a second connecting plate, wherein a plurality of second connecting holes are formed in the second connecting plate, and the second connecting plate is connected with the second bracket.

In any of the above embodiments, it is preferable that the first connection plates are provided in two.

In any of the above embodiments, it is preferable that the second connection plates are provided in two.

In any of the above schemes, preferably, the first supporting frame is provided with a transverse level and a longitudinal level.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

1. according to the hard span structure, the hard span is not directly connected with the upright post, the cantilever device is arranged on the post, the hard span is arranged on the cantilever device, and the cantilever device is connected with the upright post, so that resonance and torsion of the hard span and the upright post are well reduced and avoided. The cross-span is connected with the upright post through the cantilever device, and a rubber gasket is arranged between a supporting plate and a supporting bar in the cantilever device, so that the rubber gasket is further reduced and prevented from generating hard cross resonance and torsion, and is safer.

2. The hard spanning structure is provided with the first connecting plate and the second connecting plate, the first connecting plate is connected to the first support frame in the cantilever device, the second support plate is connected to the second support frame of the cantilever device, the first support plate and the second support plate are arranged to prevent the support frame from being directly connected with the upright post, the support frame is perforated on the support frame to reduce the support weighing, the structure is unstable, the first support plate and the second support plate are arranged to well protect the structural stability of the support frame, and the installation is safer.

3. According to the hard spanning structure, the first support frame and the second support frame are assembled with the support plates, so that the hard spanning structure is more convenient to install, disassemble and replace, different support plates are arranged for the stand columns with different widths, and the hard spanning structure is suitable for stand columns with different widths and has a wide application range.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic diagram of a hard spanning structure according to an embodiment of the present utility model;

FIG. 2 is a left side view of a hard spanning structure according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a cantilever device in a rigid cross structure according to an embodiment of the present utility model;

FIG. 4 is a front view of a cantilever device in a stiff cross structure in accordance with an embodiment of the present utility model;

fig. 5 is a front cross-sectional view of the cantilever device of fig. 4 in a stiff cross-over configuration in accordance with an embodiment of the present utility model.

Wherein: 1-stand columns; 2-hard span; 3-a cantilever device; 4-a first support frame; 5-a second support frame; 6-a first reinforcing strip; 7-a second reinforcing bar; 8-supporting plates; 9-a first rubber gasket; 10-a first screw; 11-a second screw; 12-a first connection plate; 13-a first connection hole; 14-a second connection plate; 15-a second connection hole; 16-transverse level; 17-longitudinal level.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the prior art, a span is generally installed directly on a column, a span is installed at intervals of railway test lines of a train, the span is used for supporting a connecting cable or a connecting net, the connecting cable is straddled, a downward acting force is applied to the span, the train is connected with the connecting cable through a connecting rod, when the connecting rod moves along with the train, a pulling force in the advancing direction of the connecting cable exists on the connecting cable, at the moment, the connecting cable can generate a pulling force in the advancing direction of the train on a hard span, a resultant force generated by the gravity of garbage and the connecting cable and a force generated by other factors can generate torsion on the hard span, if the hard span is installed on the column directly, a larger damage acting force is generated on the column, thus, the damage is easy to occur at the weak part of the span and the column, meanwhile, resonance is generated at the joint between the hard span and the column when the train test passes, and a safety risk factor exists.

As shown in fig. 1 to 5, the hard span structure of the embodiment of the utility model comprises a stand column 1, a hard span 2 and a cantilever device 3, wherein the stand column 1 is respectively arranged at two ends of the hard span 2, the cantilever device 3 is arranged on the stand column 1, and the two ends of the hard span 2 are respectively connected with the stand column 1 through the cantilever device 3; the cantilever device 3 comprises a first supporting frame 4, a second supporting frame 5, a first reinforcing strip 6, a second reinforcing strip 7 and a supporting plate 8, wherein the first reinforcing strip 6 is arranged on the first supporting frame 4, the second reinforcing strip 7 is arranged on the second supporting frame 5, one end of the supporting plate 8 is connected with the first reinforcing strip 6, the other end of the supporting plate 8 is connected with the second reinforcing strip 7, a first rubber gasket 9 is arranged between the supporting plate 8 and the first reinforcing strip 6, and a second rubber gasket is arranged between the supporting plate 8 and the second reinforcing strip 7.

In the hard span structure of the embodiment of the utility model, the hard span 2 is not directly connected with the upright 1, but the cantilever device 3 is arranged on the column, the hard span 2 is placed on the cantilever device 3, the cantilever device 3 is connected with the upright 1, the torsion generated by the hard span 2 is counteracted by the upright 1, and the hard span is arranged on the side surface of the upright instead of being directly and vertically arranged on the upright, so that the occurrence of resonance and torsion of the hard span 2 and the upright 1 is well reduced and avoided. The straddling device 3 is connected with the upright column 1, and a rubber gasket is arranged between a supporting plate 8 in the straddling device 3 and the supporting bar, so that the rubber gasket further reduces and avoids the occurrence of resonance and torsion of the stiff straddling device 2.

Further, one end of the support plate 8 is connected to the first reinforcement bar 6 by the first screw 10, and the first screw 10 passes through the first rubber gasket 9. The rubber gasket can reduce the rubber gasket to further reduce and avoid the occurrence of hard span 2 resonance and torsion. The support plate 8 is provided with a groove, the first reinforcing strip 6 is provided with a groove corresponding to the groove on the support plate 8, the groove on the support plate 8 and the groove on the reinforcing strip are used for being filled with or embedded into a rubber gasket, and the first screw 10 penetrates through a hole in the support plate 8 and also penetrates through the rubber gasket. The rubber gasket arranged between the supporting plate 8 and the reinforcing strip is used for reducing resonance generated when the railway test line train passes through, so that the influence of resonance of the cross beam and the upright column 1 is reduced.

Further, the other end of the supporting plate 8 is connected to the second reinforcing bar 7 by the second screw 11, and the second screw 11 passes through the second rubber gasket.

Alternatively, the number of the first screws 10 is three. The number of the first screws 10 may be plural.

Alternatively, the number of the second screws 11 is three. The number of the second screws 11 may be plural.

Optionally, the device further comprises a first connecting plate 12, a plurality of first connecting holes 13 are formed in the first connecting plate 12, and the first connecting plate 12 is connected with the first bracket. The first connecting plate 12 is provided with a plurality of second connecting holes 15, and the corresponding connecting holes can be adjusted according to the size of the upright post 1, so that the connection is more convenient.

Specifically, the device further comprises a second connecting plate 14, wherein a plurality of connecting holes are formed in the second connecting plate 14, and the second connecting plate 14 is connected with the second bracket. The second connecting plate 14 is provided with a plurality of connecting holes, and the corresponding connecting holes can be adjusted according to the size of the upright post 1, so that the connection is more convenient.

Specifically, the number of the first connection plates 12 is two. Specifically, the number of the second connection plates 14 is two.

Further, the first supporting frame 4 is provided with a transverse level 16 and a longitudinal level 17. The transverse level 16 measures the transverse level angle, the longitudinal level 17 measures the longitudinal level angle, and a worker can check whether the worker is horizontal or vertical during installation, and subsequent maintenance is facilitated.

The utility model relates to a hard spanning structure, which has the following working principle: the first support plate is arranged on the upright post through a first connecting plate, a corresponding first upright post connecting plate and a corresponding second upright post connecting plate are also arranged on the upright post, the first upright post connecting plate is matched with the first connecting plate, the first connecting plate is fixed on the first upright post connecting plate through a bolt, the second connecting plate is matched with the second upright post connecting plate, the second connecting plate is fixed on the second upright post connecting plate through a bolt, the first upright post connecting plate and the second upright post connecting plate are fixed on the upright post, and after the first support frame and the second support frame are fixed, subsequent welding or direct installation and fixation through the connecting plate are convenient; and finally, the hard span is arranged on the supporting plate, the hard span can be welded and also can be arranged on the mounting plate in other bolt modes, and when the hard span is arranged in a bolt mode, only the mounting hole is required to be drilled on the mounting plate in advance.

The hard spanning structure provided by the embodiment of the utility model has the advantages of simple structure and convenience in installation, and can effectively reduce and avoid hard spanning resonance and torsion.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

It will be readily understood by those skilled in the art that the present utility model, including any combination of parts described in the summary and detailed description of the utility model above and shown in the drawings, is limited in scope and does not constitute a complete description of the various aspects of these combinations for the sake of brevity. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Although embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives, and variations may be made in the above embodiments by those skilled in the art without departing from the spirit and principles of the utility model. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The hard spanning structure is characterized by comprising upright posts, hard spanning and overhanging devices, wherein the upright posts are respectively arranged at two ends of the hard spanning, the overhanging devices are arranged on the upright posts, and the two ends of the hard spanning are respectively connected with one upright post through the overhanging devices; the cantilever device comprises a first supporting frame, a second supporting frame, a first reinforcing strip, a second reinforcing strip and a supporting plate, wherein the first reinforcing strip is arranged on the first supporting frame, the second reinforcing strip is arranged on the second supporting frame, one end of the supporting plate is connected with the first reinforcing strip, the other end of the supporting plate is connected with the second reinforcing strip, a first rubber gasket is arranged between the supporting plate and the first reinforcing strip, a second rubber gasket is arranged between the supporting plate and the second reinforcing strip, and the cantilever device is connected with the supporting plate.

2. A rigid straddling structure according to claim 1 wherein one end of said support plate is connected to said first reinforcing strip by a first screw passing through said first rubber spacer.

3. A rigid straddling structure according to claim 1 wherein the other end of said support plate is connected to said second reinforcing strip by a second screw passing through said second rubber spacer.

4. A rigid straddling structure according to claim 2 wherein said first screws are three.

5. A stiff span structure as recited in claim 3, wherein said second screws are three.

6. The rigid straddling structure of claim 1 further comprising a first connecting plate having a plurality of first connecting holes, said first connecting plate being connected to said first support frame.

7. The hard span structure of claim 1 further comprising a second connecting plate having a plurality of second connecting holes, the second connecting plate being connected to the second support frame.

8. A rigid straddling structure according to claim 6 wherein said first web is provided in two.

9. A rigid straddling structure according to claim 7 wherein said second webs are provided in two.

10. A rigid straddling structure according to claim 1 wherein said first support frame is provided with a transverse level and a longitudinal level.