CN113981799A

CN113981799A - Beam end steel rail telescopic device and telescopic method for open bridge

Info

Publication number: CN113981799A
Application number: CN202111286992.5A
Authority: CN
Inventors: 孙云涛; 施庆峰; 冯毅; 张刚; 柴文博; 胡曙光
Original assignee: China Railway Baoji Bridge Group Co Ltd
Current assignee: China Railway Baoji Bridge Group Co Ltd
Priority date: 2021-11-02
Filing date: 2021-11-02
Publication date: 2022-01-28

Abstract

The invention relates to a beam end steel rail expansion device and an expansion method for opening a bridge, which can enable bridge decks to rotate 90 degrees, are parallel to rivers, enable ships in the rivers to pass smoothly, and enable bridge decks to be communicated, thereby realizing rail communication and meeting the driving requirements; the telescopic end comprises a steel rail expansion piece and a mechanical device, and after the two bridge decks rotate to a connection state, the mechanical device pulls and pulls the stock rail of the steel rail expansion piece to enable the stock rail to stretch and move under external force driving, and the stock rail and the fixed end line rail are butted and locked to ensure that a train passes through.

Description

Beam end steel rail telescopic device and telescopic method for open bridge

Technical Field

The invention relates to a beam end steel rail expansion device and an expansion method for opening a bridge, which can enable a bridge deck to rotate 90 degrees, be parallel to a river, enable a ship in the river to pass smoothly and enable a bridge deck to be communicated, realize track communication and meet the driving requirements, and belongs to the field of manufacturing of expansion devices special for bridge deck opening.

Background

CN111236059A entitled "a structure for installing telescopic rails at beam joints of superposed sections of horizontal and vertical curves and an adjusting method", wherein the installation structure comprises a beam end telescopic device and a steel rail telescopic adjuster; the central line of the beam end expansion device is superposed with the central line of the beam seam; the stock rails and the switch rails of the steel rail expansion adjuster are respectively arranged on two sides of a beam joint, the stock rails are positioned on the approach bridge side, and the switch rails are positioned on the main bridge side; a stock rail of the steel rail telescopic regulator is fixedly connected with at least one steel sleeper at the approach side of the beam end telescopic device; the sleeper on the outer side of the main bridge side of the beam end expansion device is a sleeper connected with a basic rail of a steel rail expansion regulator. The invention can solve the problem of rail installation and adjustment of the steel rail expansion device at the girder seam in subway construction, effectively solve the influence of temperature change of a bridge on rail expansion, realize smooth running of a bridge deck rail through gradient adjustment, ensure safe and stable passing of vehicles through the girder seam, and meet the requirements of safe and stable passing of the vehicles and comfortable riding. The method has the following defects: the method is mainly an installation and construction method of the beam end expansion device and the steel rail expansion adjuster, and the beam end expansion device and the steel rail expansion adjuster are always in a communicated state and cannot be used for the design purpose of the application. When ships in rivers need to pass through the rivers, the track can not be disconnected at the beam gap position, and the stock rail can not reach the expectation and retract under the external force drive, realizes that beam-end position track is disconnected completely, and the bridge realizes opening the rotation.

CN111155425A entitled "a large-span railway steel bridge end telescoping device", which includes a guide chute, a middle transition plate and a side transition plate; the guide sliding chute is matched and arranged at the upper part of the track bed of the railway steel bridge; the middle transition plate is fixedly arranged at the upper part of the guide chute in a matching way, and the two opposite sides in the width direction are both provided with side transition plates in a matching way; the movable steel sleepers, the fixed steel sleepers and the concrete switch sleepers are arranged on the upper parts of the track beds at the outer sides of the two ends of the middle transition plate and the side transition plates in the length direction; the movable steel sleeper, the fixed steel sleeper and the concrete switch sleeper are all arranged along the width direction of the middle transition plate and the side transition plates; the two ends of the movable steel sleeper and the fixed steel sleeper in the length direction are in matched connection with the side transition plates through connecting rod telescopic mechanisms; the steel rails of the railway steel bridge are fixedly arranged on the upper parts of the side transition plate, the movable steel sleeper, the fixed steel sleeper and the concrete switch sleeper. The invention has simple and reasonable structural design, is convenient to install and lay, is convenient to maintain and maintain subsequently, and is suitable for ultra-large telescopic displacement. The method has the following defects: the track of this patent application is in the connected state all the time, and when the ship need pass through the river in the river, the track can not break off at beam slit position, and the stock rail can't reach anticipated withdrawal under the external force drive, realizes that beam-ends position track breaks off completely, and the bridge realizes opening the rotation.

CN108517761A, name "an integral beam-ends telescoping device suitable for super large-span railway steel bridge", include: the basic supporting structure is composed of a movable end displacement box, a fixed end displacement box and a supporting beam and is positioned at the bottom of the beam end expansion device; the supporting beam is an integral box-shaped beam, two ends of the supporting beam are respectively inserted into the movable end displacement box and the fixed end displacement box, the movable end displacement box is fixedly connected with the approach bridge embedded steel plate through bolts, and the fixed end displacement box is fixedly connected with the main bridge embedded steel plate through bolts; the movable steel sleepers and the fixed steel sleepers are arranged in parallel and are perpendicular to the length direction of the railway; the movable steel sleeper is arranged on the top of the supporting beam, and the fixed steel sleepers are respectively arranged on the tops of the movable end displacement box and the fixed end displacement box; the two steel rails are arranged along the length direction of the railway, are positioned above the movable steel sleeper and the fixed steel sleeper and are sequentially connected with the movable steel sleeper and the fixed steel sleeper through fasteners; and the connecting rod device is connected to the end part of each movable steel sleeper and the end parts of the two fixed steel sleepers adjacent to the movable steel sleepers. The method has the following defects: the track of this patent application is in the connected state all the time, and when the ship need pass through the river in the river, the track can not break off at beam slit position, and the stock rail can't reach anticipated withdrawal under the external force drive, realizes that beam-ends position track breaks off completely, and the bridge realizes opening the rotation.

Disclosure of Invention

The design purpose is as follows: aiming at the problems in the prior art, the beam end steel rail expansion device and the expansion method for opening the bridge can enable the bridge deck to rotate 90 degrees, be parallel to a river, enable a ship in the river to pass through smoothly, and achieve rail communication when the bridge deck is communicated, thereby meeting the driving requirements.

The design scheme is as follows: in order to achieve the above design objectives. In the structural design of the invention, the steel rail expansion device is laid on two bridge decks, the bridge decks can rotate 90 degrees and are parallel to rivers, and ships can only pass through the rivers smoothly. When the bridge deck is communicated, the track at the upper telescopic end of one span extends out of the stock rail and is connected with the track of the other span, so that the communication of the tracks is realized, and the traveling requirements are met; when the bridge deck needs to be opened, the telescopic end basic rail retracts to the initial position, the track is disconnected at the two-span gap, and the bridge deck is opened in a reverse rotation mode to the river parallel direction. The front end of a stock rail of the conventional steel rail telescopic device is fixedly connected with a line rail, the stock rail is telescopic forwards and backwards under the action of temperature force, and a rail line is always in a connection and opening state.

The telescopic device designed by the invention is based on the principle of the traditional steel rail telescopic regulator, and the traditional steel rail telescopic regulator enables the temperature force of the line on the bridge to be diffused because the rail piece moves and stretches due to the temperature difference of the beam body, so that the longitudinal force of the line born by the rail and the bridge pier is reduced. The invention utilizes an external force driving device to pull and pull the stock rail to stretch, so that the stock rail is connected and locked with the fixed end rail, and the aim of meeting the requirement of traffic of a line is fulfilled. Compared with a traditional steel rail telescopic regulator, the external force driving telescopic rail can effectively control the connection and disconnection of the rail, and the requirement for the rotary opening of the bridge is met. The principle and the traditional steel rail telescopic regulator are basic rail telescopic, but the invention is driven by external force, can control the basic rail to effectively stretch and ensure the operation of a track line.

1. The design principle of the scheme is as follows: when the train passes through, the bridge deck is rotationally connected, the telescopic end adopts the driving device to pull the stock rail to extend out, so that the stock rail and the fixed end rail are connected and locked, and the continuous traffic of the line is met; when the train passes through, the basic rail at the telescopic end is unlocked, the basic rail is pulled by a driving device to return to the original position, the track line is disconnected, the bridge deck is rotationally disconnected, and river navigation is met.

2. The structural design of the scheme is as follows: the rail expansion device mainly comprises a line fixing end and an expansion end. The fixed end is composed of a guide rail, an auxiliary connecting rail, a locking system, a steel switch tie and the like, the guide rail and the auxiliary connecting rail are fixedly connected through a base plate, spacer irons and the like, and the locking system is fixed on the upper surface of the steel switch tie. The telescopic end comprises a stock rail, a switch rail, a main connecting rail, a driving device and the like, the stock rail and the main connecting rail are fixedly connected through a base plate, spacer irons and the like, and the driving device is fixed on a bridge deck main body structure; the stock rail and the switch rail are fixed together through the base plate, the stock rail can realize traction and extension, the switch rail is fixed, and the heel end of the switch rail is connected with a line, so that the driving requirement is met.

The technical scheme 1: a beam end steel rail expansion device for opening a bridge is composed of a fixed end and an expansion end, wherein the fixed end and the expansion end are respectively positioned on two bridge deck plates of the bridge, a large-span gap is arranged between the bridge deck plates, and the bridge deck plates can be opened in a rotating mode, so that the navigation requirements of river ships are met; the telescopic end comprises a steel rail expansion piece and a mechanical device, and after the two bridge decks rotate to a connection state, the mechanical device pulls and pulls the stock rail of the steel rail expansion piece to enable the stock rail to stretch and move under external force driving, and the stock rail and the fixed end line rail are butted and locked to ensure that a train passes through.

The technical scheme 2 is as follows: when the rails need to be communicated, the telescopic end driving device pulls and pulls the telescopic end basic rail to longitudinally extend out, so that the basic rail is connected with the fixed end guide rail, the fixed end locking system locks the telescopic end basic rail after connection, the rails are communicated, and the driving requirements are met; when the train passes through, the fixed end locking system releases the locking signal, the telescopic end basic rail returns to the original initial state under the action of the driving device, the track line is disconnected, the bridge deck is rotationally disconnected, and river navigation is met.

Compared with the traditional steel rail telescopic regulator, the telescopic device provided by the invention has the advantages that the basic rail is pulled to stretch by the external force driving device, so that the basic rail is connected and locked with the fixed end rail, the purpose of meeting the requirement of a line traffic is achieved, compared with the traditional steel rail telescopic regulator, the external force driving telescopic rail can effectively control the connection and disconnection of the rail, the requirement of opening a bridge is met, and the operation of a rail line is ensured.

Drawings

Figure 1 is a schematic view of a beam end rail retractor for an open bridge.

Detailed Description

Example 1: reference is made to figure 1. A beam end steel rail expansion device for opening a bridge is composed of a fixed end and an expansion end, wherein the fixed end and the expansion end are respectively positioned on two bridge deck plates of the bridge, a large-span gap is arranged between the bridge deck plates, and the bridge deck plates can be opened in a rotating mode to meet the navigation requirements of river ships; the telescopic end comprises a steel rail expansion piece and a mechanical device, and after the two bridge decks rotate to a connection state, the mechanical device pulls and pulls the stock rail of the steel rail expansion piece to enable the stock rail to stretch and move under external force driving, and the stock rail and the fixed end line rail are butted and locked to ensure that a train passes through.

The steel rail expansion device is laid on two bridge decks, the bridge decks can rotate 90 degrees and are parallel to a river, and a ship can only pass through the river smoothly; when the bridge deck is communicated, the track at the upper telescopic end of one span extends out of the stock rail and is connected with the track of the other span, so that the communication of the tracks is realized, and the traveling requirements are met; when the bridge deck needs to be opened, the telescopic end basic rail retracts to the initial position, the track is disconnected at the two-span gap, and the bridge deck is opened in a reverse rotation mode to the river parallel direction.

The rail expansion device utilizes an external force driving device to pull and pull the stock rail to expand and contract, so that the stock rail is connected and locked with the fixed end rail, and the purpose of meeting the requirement of a line on traffic is achieved.

The telescopic end is by stock rail 1, switch rail 2, main connection rail 3, the supplementary connection rail 4, guide rail 5, locking system 6, drive arrangement 7 constitutes, stock rail 1 and main connection rail 3 are connected fixedly through backing plate, interval iron, drive arrangement 7 is fixed on the bridge floor major structure, stock rail 1 and switch rail 2 pass through the backing plate and fix together, stock rail 1 can realize drawing flexible, switch rail 2 is fixed, 2 heel ends of switch rail and line connection, satisfy the driving requirement.

Example 2: on the basis of the embodiment 1, the telescopic method for the beam end steel rail telescopic device for opening the bridge is characterized in that when the rails need to be communicated, the telescopic end driving device 7 pulls the telescopic end basic rail 1 to longitudinally extend out, so that the basic rail 1 is connected with the fixed end guide rail 5, the fixed end locking system 6 locks the telescopic end basic rail 1 after connection, the rails are communicated, and the driving requirements are met; when the train passes through, the fixed end locking system 6 releases the locking signal, the telescopic end basic rail 1 returns to the original initial state under the action of the driving device 7, the track line is disconnected, the bridge deck is rotationally disconnected, and river navigation is met.

The types of driving devices adopted by the driving device comprise mechanical link driving, cam mechanism driving, gear transmission, rack transmission, hydraulic driving and the like, the patent only describes that the stock rail stretches under the traction action of the external mechanical device, and the specific external mechanical device is not described in a unique type. The working principle mainly comprises that an external force mechanical device is fixedly connected with the stock rail to pull the stock rail to stretch.

The types of the locking systems which can be adopted by the locking system comprise mechanical fixation, electromagnetic induction, signal induction, a bolt mechanism and the like, the patent only describes that the locking system is locked after the extension of the stock rail is connected with the guide rail, the fixed rail is communicated with the circuit, and the only type of the specifically adopted locking system is not described. The operating principle is that the locking system locks the fixed telescopic stock rail in a communicated state and does not move freely.

It is to be understood that: although the foregoing embodiments have described the design concept of the present invention in detail, these descriptions are only used for describing the design concept of the present invention in brief, and not for limiting the design concept of the present invention, and any combination, addition or modification that does not exceed the design concept of the present invention falls within the scope of the present invention.

Claims

1. A beam end steel rail expansion device for opening a bridge is characterized by comprising a fixed end and an expansion end, wherein the fixed end and the expansion end are respectively positioned on two bridge deck plates of the bridge, a large-span gap is arranged between the bridge deck plates, and the bridge deck plates can be opened in a rotating manner, so that the navigation requirements of river ships are met; the telescopic end comprises a steel rail expansion piece and a mechanical device, and after the two bridge decks rotate to a connection state, the mechanical device pulls and pulls the stock rail of the steel rail expansion piece to enable the stock rail to stretch and move under external force driving, and the stock rail and the fixed end line rail are butted and locked to ensure that a train passes through.

2. A beam end rail extension and retraction apparatus for opening a bridge as claimed in claim 1, wherein: the steel rail expansion device is laid on two bridge decks, the bridge decks can rotate 90 degrees and are parallel to a river, and a ship can only pass through the river smoothly; when the bridge deck is communicated, the track at the upper telescopic end of one span extends out of the stock rail and is connected with the track of the other span, so that the communication of the tracks is realized, and the traveling requirements are met; when the bridge deck needs to be opened, the telescopic end basic rail retracts to the initial position, the track is disconnected at the two-span gap, and the bridge deck is opened in a reverse rotation mode to the river parallel direction.

3. A beam end rail extension and retraction apparatus for opening a bridge as claimed in claim 1, wherein: the rail expansion device utilizes an external force driving device to pull and pull the stock rail to expand and contract, so that the stock rail is connected and locked with the fixed end rail, and the purpose of meeting the requirement of a line on traffic is achieved.

4. A beam end rail extension and retraction apparatus for opening a bridge as claimed in claim 1, wherein: the fixed end consists of an auxiliary connecting rail (4), a guide rail (5), a locking system (6) and a steel switch tie, the guide rail and the auxiliary connecting rail are fixedly connected through a base plate, spacer iron and the like, and the locking system is fixed on the upper surface of the steel switch tie; the telescopic end consists of a stock rail (1), a switch rail (2), a main connecting rail (3) and a driving device (7), the stock rail (1) and the main connecting rail (3) are fixedly connected through a base plate and spacer irons, and the driving device (7) is fixed on a bridge deck main body structure; the stock rail (1) and the switch rail (2) are fixed together through the base plate, the stock rail (1) can be drawn and stretched, the switch rail (2) is fixed, and the heel end of the switch rail (2) is connected with a line, so that the traveling requirements are met.

5. A method for stretching a beam end steel rail stretching device of an open bridge is characterized by comprising the following steps: when the rails need to be communicated, the telescopic end driving device pulls the telescopic end basic rail to longitudinally extend out, so that the basic rail is connected with the fixed end guide rail, the fixed end locking system locks the telescopic end basic rail after connection, and the rails are communicated to meet the driving requirements; when the train passes through, the fixed end locking system releases the locking signal, the telescopic end basic rail returns to the original initial state under the action of the driving device, the track line is disconnected, the bridge deck is rotationally disconnected, and river navigation is met.