阅读说明：本技术 盾构机台车在已运营车站的负二层内调头的方法 (Method for turning over shield tunneling machine trolley in negative two-layer of operated station ) 是由 李应姣 张闯 张志冰 罗水保 谭桂平 谢强健 于 2019-10-16 设计创作，主要内容包括：本发明提供了一种盾构机台车在已运营车站的负二层内调头的方法。本发明中的盾构机台车平移调头方法具体步骤如下：将盾构机台车通过电瓶车沿着盾构完成的已贯穿隧道拖至该隧道的始发井进行调头后,再通过电瓶车拖至接收端端头井的车站内,采用台车平移托架和平移装置将其平移至二次始发端,并与盾构机拼接好后进行二次盾构始发。本发明中的方法可根据施工环境灵活调整,既可以适用于空间宽广的施工区域,也可以适用于狭小无吊装条件的施工环境,解决了现有盾构机台车调头方法受施工环境影响的问题。(The invention provides a method for turning a shield tunneling machine trolley around in a negative two-layer of an operated station. The shield tunneling machine trolley translation turning method specifically comprises the following steps: and dragging the shield machine trolley to an originating well of the tunnel along the tunnel which is completed by the shield through the storage battery car for turning around, then dragging the trolley to a station of a receiving end well through the storage battery car, translating the trolley to a secondary originating end by adopting a trolley translation bracket and a translation device, and splicing the trolley with the shield machine for secondary shield originating. The method can be flexibly adjusted according to the construction environment, not only can be suitable for construction areas with wide space, but also can be suitable for the construction environment without narrow hoisting conditions, and the problem that the conventional shield tunneling machine trolley turning method is influenced by the construction environment is solved.)

1. A method for turning over a shield machine trolley in a negative two-layer of an operated station is characterized in that an end well for shield construction is positioned in the closed negative two-layer of the operated station, and the method comprises the following specific steps:

(1) laying a storage battery car track in an end well of a shield receiving end along the tunneling direction of a shield machine to a station adjacent to the end well, laying a trolley starting track in the end well along the shield starting direction, erecting the storage battery car track to the height of the storage battery car track in the penetrated shield tunnel through a split heads, and butting the storage battery car track with the storage battery car track in the penetrated shield tunnel, wherein one end of the trolley starting track horizontally extends to the station adjacent to the end well; laying a trolley translation steel plate between the storage battery car track close to the end well of the station and the trolley starting track to form a trolley translation area;

(2) mutually disconnecting a plurality of trolleys which reach the receiving portal of the end well, sequentially dragging the disconnected trolleys from the tail part to the front part to the starting well of the tunnel along the tunnel which is completed by the shield by using the storage battery car of the shield machine, and hoisting the disconnected trolleys to the ground by hoisting equipment to rotate 180 degrees for turning around;

(3) sequentially hoisting and descending the trolleys which are turned around in the step (2) from the tail part to the front part, sequentially transporting the trolleys to a receiving hole of the tunnel along the tunnel by the storage battery car, and dragging the trolleys to the position corresponding to the trolley translation area along the storage battery car track paved in the step (1);

(4) when the trolley reaches the position corresponding to the trolley translation area, a chain block is installed on a station top plate to vertically hoist the trolley, the battery car is moved away, a battery car track in the area under the trolley is detached, a steel plate is laid in the area to enable the steel plate to be in seamless butt joint with the steel plate in the trolley translation area in the step (1), then two trolley translation brackets are arranged on the steel plate under the trolley in parallel, the arrangement direction of the two trolley translation brackets is perpendicular to the travelling direction of the trolley and respectively correspond to the positions of front wheels and rear wheels of the trolley, and finally the trolley is vertically descended onto the translation brackets through a chain block;

(5) installing a trolley translation device, wherein the trolley translation device comprises two winches and two groups of fixed pulleys, the two groups of fixed pulleys are fixedly installed on a station side wall in the trolley translation direction, each winch is fixed on two sides of a shield machine trolley translation line, the two winches are respectively connected with two translation brackets below the trolley through steel wire ropes, one end of each steel wire rope is fixed at the front end of the translation bracket, the other end of each steel wire rope is connected with the winches after winding the fixed pulleys, the winches provide the shield machine trolley translation power, and the fixed pulleys provide counter force to drive the shield machine trolley to translate to the side face of a trolley starting track along a trolley translation area;

(6) a steel plate is adopted to set up a slope between a translation bracket and a trolley starting track, when a shield machine trolley reaches the side surface of the trolley starting track, a steel wire rope connected with the translation bracket by a translation device is disassembled and directly connected to the trolley, the trolley is directly dragged to the trolley starting track along the set slope, then the steel wire rope between the translation device and the trolley is disassembled, then the trolley is horizontally dragged to the trolley starting track from the trolley translation bracket by a dragging mechanism, and the trolley is dragged to a trolley assembly area in a station along the trolley starting track;

(7) and (4) repeating the steps (3) to (6), sequentially transferring the multiple sections of trolleys to a trolley assembly area in the station, assembling the trolleys from top to bottom, splicing the assembled trolleys with the shield tunneling machine, and waiting for the next shield starting.

2. The method for turning around the shield tunneling machine trolley in the negative two-storey of the operated station as claimed in claim 1, wherein: when the trolley is dragged to the initial well of the tunnel along the tunnel penetrated in the step (2), the head and the planker of the storage battery car are separated firstly, the head of the storage battery car is connected with the trolley, then the trolley rails on two sides of the planker of the storage battery car are heightened to form a slope, the height of the highest end of the slope is equal to the height of the planker of the storage battery car, the trolley is directly dragged to the planker of the storage battery car along the slope through the head of the storage battery car, then the head of the storage battery car is separated from the trolley, the planker with the trolley is connected and dragged, and the trolley is transported.

3. The method for turning around the shield tunneling machine trolley in the negative two-storey of the operated station as claimed in claim 1, wherein: the translation bracket in the step (4) comprises a translation base with the length larger than the width of the shield machine trolley and a pull plate welded at the front end of the translation base, two wheel clamping grooves are formed in the upper surface of the translation base, the center distance of the two wheel clamping grooves is equal to the distance between the wheels on the left side and the wheels on the right side of the shield machine trolley, the wheel clamping grooves are composed of arc-shaped grooves and stop blocks symmetrically arranged on the two sides of the arc-shaped grooves, the distance between the two stop blocks is larger than the width of the wheels of the shield machine trolley, and the length of the stop blocks is larger than or equal to the diameter of the wheels of the shield machine trolley; the center of the pulling plate is provided with a pulling hole, and the center point of the pulling hole and the center point of the wheel clamping groove are both arranged on the center line of the translation bracket.

4. The method for turning around the shield tunneling machine trolley in the negative two-storey of the operated station as claimed in claim 1, wherein: the bottom of the translation bracket in the step (4) is provided with two sliding bases, each sliding base is a square base, and the top surface of each square base is welded with the bottom surface of each translation base; the bottom of the square base is provided with an annular groove, a plurality of balls are arranged in the annular groove, the balls are fixed in the annular groove through a bearing retainer, the diameter of each ball is larger than the depth of the annular groove, and the lower portion of each ball extends out of the annular groove to be directly contacted with the ground of a moving area.

5. The method for turning around the shield tunneling machine trolley in the negative two-storey of the operated station as claimed in claim 1, wherein: in the step (6), the dragging mechanism is a battery car head or a winch, when the dragging mechanism is the winch, the winch is directly fixed at a specified position, a fixed pulley is installed in the trolley form direction, a steel wire rope of the winch winds around the fixed pulley and then is connected with the shield machine trolley, and the shield machine trolley is dragged to run to a specified area along the trolley track through the winch and the fixed pulley; when the dragging mechanism is the storage battery car locomotive, the storage battery car track is laid in parallel on the side face of the trolley track, the fixed pulleys are distributed and installed in the horizontal direction of the trolley track and the storage battery car track, the storage battery car locomotive is connected with the shield trolley through the steel wire rope wound behind the fixed pulleys, and the shield machine trolley is dragged to travel to the designated area along the trolley track through the storage battery car locomotive.

6. The method for turning around the shield tunneling machine trolley in the negative two-storey of the operated station as claimed in claim 1, wherein: four lifting lugs are welded on the translation bracket in the step (4), each lifting lug is formed by welding a cylindrical support platform, a circular support plate and a semicircular steel plate with a lifting hole, the diameter of the circular support plate is larger than that of the cylindrical support platform, and the total height of the circular support plate is 20 cm; wherein two lugs are distributed at the position close to the wheel clamping groove, and the other two lugs are distributed at the edge of the translation base.

Technical Field

The invention relates to the field of shield machine construction, in particular to a method for turning a shield machine trolley around in a negative two-layer of an operated station.

Background

With the rapid development of the current society and the continuous update of the scientific and technological era, the urban volume pressure is increased suddenly, so that the method of exploiting underground spaces in a large area is adopted for relieving, and the urban accommodation rate is increased. The shield machine is the first-selected equipment in the current subway construction field, is a special engineering machine for tunnel excavation, has the functions of excavating and cutting soil bodies, conveying soil slag, assembling tunnel lining, measuring, guiding, rectifying deviation and the like, can meet the whole excavation supporting process, and has the advantages of safety, quickness and the like.

In the shield method construction process, according to the construction arrangement, one shield machine is often used for completing the tunneling tasks of two lines in one shield interval, when the shield machine completes the tunneling construction of one tunnel, the shield machine needs to turn around so as to start the tunneling of a second adjacent tunnel, and the common method is to disassemble, hoist and transport a shield body and a trolley of the shield machine to an initial station of the second adjacent tunnel at an end well of the first excavated tunnel, and then assemble the shield body and the trolley. The trolley of the shield machine is large in weight and size, so that large hoisting equipment and a hoisting rotating space are needed when hoisting and turning are carried out, the requirement of installation of the large hoisting equipment on a construction environment is high, the time is long, and the whole tool further has the defects of complex process and long construction period. And when the end well of shield structure machine was in the station burden second floor of having operated, because upper station has been under construction and has been accomplished, in the operation, the bearing capacity of its station is relatively poor, does not possess large-scale hoisting equipment's installation and handling environment, and the station inner space is limited moreover, can't rotate handling work, and the tune work of its platform truck just can't go on, generally need directly carry out the translation tune operation in receiving the well.

The traditional turn-around or translation construction is usually laid on the ground at present, then a simple platform is manufactured, a rear matching trolley or an unearthed battery truck is fixed on the platform, a jack is adopted to push the platform to move on the steel plate, after the jack finishes the jacking of an oil cylinder stroke, a jacking iron is added at the rear part of the jack, the jacking is carried out in a circulating mode, the construction efficiency is low, more required jacking iron components are needed, in addition, the jack arrangement position can only be dynamically adjusted according to the position of the platform in the field jacking process, the elongation is calculated again, the great uncertainty is realized, meanwhile, the turning path cannot be accurately controlled, the phenomenon that the jacking displacement exceeds the limit or the side wall is scraped frequently occurs in the construction, and the construction safety and progress are influenced. The invention patent with publication number CN110130908A discloses a shield trolley turning and translation system and a construction method, and particularly realizes the turning of a trolley by adopting a pulley block device and a limiting device, utilizing a storage battery car matched with a shield to pull the trolley to turn around and finally adopting fine adjustment of a jack. Although the method greatly improves the construction efficiency and increases the construction safety, the turning path is more accurate, the turning device is more complex, the whole turning process needs larger space, for example, for a closed station which is operated, because more bearing columns are arranged in the station, the distance between the bearing columns is smaller, the turning can not be finished directly in the station, and the bearing columns are easy to collide in the translation process.

Disclosure of Invention

The invention provides a method for turning over a shield machine trolley in a negative two-layer of an operated station according to the defects of the prior art, which can solve the problem of translational turning over work of the shield machine trolley under the conditions of no hoisting condition and narrow space, and improve the construction efficiency under the condition of reducing the construction cost.

In order to solve the problems, the invention provides a method for turning a shield machine trolley around in a negative two-layer of an operated station, wherein an end well for shield construction is positioned in the closed negative two-layer of the operated station, and the method is characterized by comprising the following specific steps of:

(1) laying a storage battery car track in an end well of a shield receiving end along the tunneling direction of a shield machine to a station adjacent to the end well, laying a trolley starting track in the end well along the shield starting direction, erecting the storage battery car track to the height of the storage battery car track in the penetrated shield tunnel through a split heads, and butting the storage battery car track with the storage battery car track in the penetrated shield tunnel, wherein one end of the trolley starting track horizontally extends to the station adjacent to the end well; laying a trolley translation steel plate between the storage battery car track close to the end well of the station and the trolley starting track to form a trolley translation area;

(2) mutually disconnecting a plurality of trolleys which reach the receiving portal of the end well, sequentially dragging the disconnected trolleys from the tail part to the front part to the starting well of the tunnel along the tunnel which is completed by the shield by using the storage battery car of the shield machine, and hoisting the disconnected trolleys to the ground by hoisting equipment to rotate 180 degrees for turning around;

(3) sequentially hoisting and descending the trolleys which are turned around in the step (2) from the tail part to the front part, sequentially transporting the trolleys to a receiving hole of the tunnel along the tunnel by the storage battery car, and dragging the trolleys to the position corresponding to the trolley translation area along the storage battery car track paved in the step (1);

(4) when the trolley reaches the position corresponding to the trolley translation area, a chain block is installed on a station top plate to vertically hoist the trolley, the battery car is moved away, a battery car track in the area under the trolley is detached, a steel plate is laid in the area to enable the steel plate to be in seamless butt joint with the steel plate in the trolley translation area in the step (1), then two trolley translation brackets are arranged on the steel plate under the trolley in parallel, the arrangement direction of the two trolley translation brackets is perpendicular to the travelling direction of the trolley and respectively correspond to the positions of front wheels and rear wheels of the trolley, and finally the trolley is vertically descended onto the translation brackets through a chain block;

(5) installing a trolley translation device, wherein the trolley translation device comprises two winches and two groups of fixed pulleys, the two groups of fixed pulleys are fixedly installed on a station side wall in the trolley translation direction, each winch is fixed on two sides of a shield machine trolley translation line, the two winches are respectively connected with two translation brackets below the trolley through steel wire ropes, one end of each steel wire rope is fixed at the front end of the translation bracket, the other end of each steel wire rope is connected with the winches after winding the fixed pulleys, the winches provide the shield machine trolley translation power, and the fixed pulleys provide counter force to drive the shield machine trolley to translate to the side face of a trolley starting track along a trolley translation area;

(6) a steel plate is adopted to set up a slope between a translation bracket and a trolley starting track, when a shield machine trolley reaches the side surface of the trolley starting track, a steel wire rope connected with the translation bracket by a translation device is disassembled and directly connected to the trolley, the trolley is directly dragged to the trolley starting track along the set slope, then the steel wire rope between the translation device and the trolley is disassembled, then the trolley is horizontally dragged to the trolley starting track from the trolley translation bracket by a dragging mechanism, and the trolley is dragged to a trolley assembly area in a station along the trolley starting track;

(7) and (4) repeating the steps (3) to (6), sequentially transferring the multiple sections of trolleys to a trolley assembly area in the station, assembling the trolleys from top to bottom, splicing the assembled trolleys with the shield tunneling machine, and waiting for the next shield starting.

The further technical scheme of the invention is as follows: when the trolley is dragged to the initial well of the tunnel along the tunnel penetrated in the step (2), the head and the planker of the storage battery car are separated firstly, the head of the storage battery car is connected with the trolley, then the trolley rails on two sides of the planker of the storage battery car are heightened to form a slope, the height of the highest end of the slope is equal to the height of the planker of the storage battery car, the trolley is directly dragged to the planker of the storage battery car along the slope through the head of the storage battery car, then the head of the storage battery car is separated from the trolley, the planker with the trolley is connected and dragged, and the trolley is transported.

The further technical scheme of the invention is as follows: the translation bracket in the step (4) comprises a translation base with the length larger than the width of the shield machine trolley and a pull plate welded at the front end of the translation base, two wheel clamping grooves are formed in the upper surface of the translation base, the center distance of the two wheel clamping grooves is equal to the distance between the wheels on the left side and the wheels on the right side of the shield machine trolley, the wheel clamping grooves are composed of arc-shaped grooves and stop blocks symmetrically arranged on the two sides of the arc-shaped grooves, the distance between the two stop blocks is larger than the width of the wheels of the shield machine trolley, and the length of the stop blocks is larger than or equal to the diameter of the wheels of the shield machine trolley; the center of the pulling plate is provided with a pulling hole, and the center point of the pulling hole and the center point of the wheel clamping groove are both arranged on the center line of the translation bracket.

The further technical scheme of the invention is as follows: the bottom of the translation bracket in the step (4) is provided with two sliding bases, each sliding base is a square base, and the top surface of each square base is welded with the bottom surface of each translation base; the bottom of the square base is provided with an annular groove, a plurality of balls are arranged in the annular groove, the balls are fixed in the annular groove through a bearing retainer, the diameter of each ball is larger than the depth of the annular groove, and the lower portion of each ball extends out of the annular groove to be directly contacted with the ground of a moving area.

The further technical scheme of the invention is as follows: in the step (6), the dragging mechanism is a battery car head or a winch, when the dragging mechanism is the winch, the winch is directly fixed at a specified position, a fixed pulley is installed in the trolley form direction, a steel wire rope of the winch winds around the fixed pulley and then is connected with the shield machine trolley, and the shield machine trolley is dragged to run to a specified area along the trolley track through the winch and the fixed pulley; when the dragging mechanism is the storage battery car locomotive, the storage battery car track is laid in parallel on the side face of the trolley track, the fixed pulleys are distributed and installed in the horizontal direction of the trolley track and the storage battery car track, the storage battery car locomotive is connected with the shield trolley through the steel wire rope wound behind the fixed pulleys, and the shield machine trolley is dragged to travel to the designated area along the trolley track through the storage battery car locomotive.

The further technical scheme of the invention is as follows: the front face of the translation bracket in the step (4) is welded with four lifting lugs, each lifting lug is formed by welding a cylindrical support platform, a circular support plate and a semicircular steel plate with a lifting hole, the diameter of the circular support plate is larger than that of the cylindrical support platform, and the total height of the circular support plate is 20 cm; wherein two lugs are distributed at the position close to the wheel clamping groove, and the other two lugs are distributed at the edge of the translation base.

The trolley turning around is that a running-through tunnel is used for transporting the trolley to a starting well running through the tunnel through a storage battery car, the trolley is lifted to the ground through the starting well for turning around and then goes down the well, the trolley is dragged into a station at the side of a shield receiving well by using the storage battery car to provide power, and the trolley is translated in the station; the trolley is transferred to the supporting plate of the battery car by the slope design of the trolley track, so that the lifting and falling work of the rear matched trolley during translation is reduced, the friction type is converted by a translation tool processed by rolling steel balls during translation, the translation speed is improved, and the translation stability is improved.

The method can be flexibly adjusted according to the construction environment, not only can be suitable for construction areas with wide space, but also can be suitable for the construction environment without narrow hoisting conditions, and the problem that the conventional shield tunneling machine trolley turning method is influenced by the construction environment is solved.

Drawings

FIG. 1 is a schematic illustration of the trolley of an embodiment returning to its originating well along a tunnel already traversed;

FIG. 2 is a schematic view showing the bogie moving into the station after turning around in the embodiment;

FIG. 3 is a schematic diagram illustrating a state in which the platform truck is translated within the station in the embodiment;

FIGS. 4-1 and 4-2 are schematic views illustrating the movement of the dolly after reaching the dolly start track in the embodiment;

FIG. 5 is a schematic view of the carriage assembly after full translation in the embodiment;

FIG. 6 is a top view of the trolley as it translates;

FIG. 7 is a cross-sectional view AA in FIG. 6;

FIG. 8 is a cross-sectional view BB of FIG. 6;

FIG. 9 is a front view of the carriage bracket of the present invention;

FIG. 10 is a schematic view of the bottom structure of the carriage bracket of the present invention;

FIG. 11 is a side view of the carriage bracket of the present invention;

fig. 12 is a schematic view of welding a lug to a carriage bracket according to the present invention.

In the figure: in the figure: the device comprises a shield tunneling machine trolley 1, trolley wheels 1, a translation bracket 2, a translation base 2-1, a pulling plate 2-2, a pulling plate 2-3, wheel clamping grooves 2-30, arc-shaped grooves 2-31, stop blocks 2-4, a sliding base 2-40, a square base 2-41, balls 2-42, annular grooves 2-5, pulling holes 2-6, lifting lugs 3-fixed pulleys, winches 4, traction steel wire ropes 5, stations 6-B, storage battery car tracks 7, vehicle launching tracks 8, vehicle translation steel plates 9, end wells 10, end wells 11, penetrated shield tunnels 12, penetrated tunnel launching wells 13, traction mechanisms 14, shield tunneling machines 15, bearing columns 16 and storage battery cars.

Detailed Description

The invention is further illustrated by the following figures and examples. Fig. 1 to 11 are drawings of embodiments, which are drawn in a simplified manner and are only used for the purpose of clearly and concisely illustrating the embodiments of the present invention. The following claims presented in the drawings are specific to embodiments of the invention and are not intended to limit the scope of the claimed invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "inside", "outside", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or the orientations or positional relationships that the products of the present invention are conventionally placed in use, or the orientations or positional relationships that are conventionally understood by those skilled in the art, and are used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is also to be noted that, unless otherwise explicitly stated or limited, the terms "disposed" and "connected" are to be interpreted broadly, and for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; the connection may be direct or indirect via an intermediate medium, and may be a communication between the two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The invention uses the trolley translation bracket and the trolley translation device to translate in the turning process of the shield machine trolley, mainly comprises the steps that after the trolley returns to an originating well along a penetrated shield tunnel 11 and is lifted to the ground through a gantry support, then the trolley is turned, and then the trolley is transported to a station along the penetrated shield tunnel 11, the trolley translation bracket and the trolley translation device are adopted to translate the trolley to an originating line of an adjacent tunnel, and the trolley translation bracket and the trolley translation device are spliced with a turned shield machine 14 to perform secondary shield.