CN111946360A - Device for assisting translation and rotation of shield tunneling machine and construction method thereof - Google Patents
Device for assisting translation and rotation of shield tunneling machine and construction method thereof Download PDFInfo
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- CN111946360A CN111946360A CN202010837954.3A CN202010837954A CN111946360A CN 111946360 A CN111946360 A CN 111946360A CN 202010837954 A CN202010837954 A CN 202010837954A CN 111946360 A CN111946360 A CN 111946360A
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- 238000013519 translation Methods 0.000 title claims abstract description 114
- 238000010276 construction Methods 0.000 title claims abstract description 67
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/0621—Shield advancing devices
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
- E21D9/126—Loading devices or installations
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Abstract
The invention discloses a device for assisting a shield tunneling machine in translation and rotation, which comprises a plurality of auxiliary tools, wherein any auxiliary tool comprises: the bottom of the middle seat is provided with a plurality of rolling parts and rolls on the ground through the plurality of rolling parts; the top seat is arranged above the middle seat and is hinged with the middle seat; and the anti-drop plates are arranged on the top surface of the middle seat at intervals along the periphery of the top seat. The invention also discloses a construction method of the device for assisting the shield tunneling machine in translation and rotation. According to the invention, a plurality of auxiliary devices are used as carriers of the translation and rotation of the shield tunneling machine, and on the basis of using the steel sleeve and the oil cylinder to carry out translation and rotation construction on the shield tunneling machine, the traditional sliding friction is converted into rolling friction, so that the friction resistance between the shield tunneling machine and the ground is reduced, the control precision of translation and rotation is improved, and the construction efficiency is improved under the condition of ensuring the construction safety.
Description
Technical Field
The invention relates to the field of shield tunnel construction. More particularly, the invention relates to a device for assisting a shield tunneling machine in translation and rotation and a construction method thereof.
Background
With the continuous development of the urbanization process, the urban population is rapidly increased, and the problem of traffic jam always troubles all big cities. The shield construction method is widely applied to tunnel construction in the fields of subways, highways, municipal administration and the like due to the characteristics of rapidness, safety and environmental protection.
The translation and rotation body of the shield tunneling machine is a link with high difficulty coefficient and long construction period in the shield tunneling construction process. The common shield tunneling machine translation and rotation construction has two modes: when the traditional method is used for the translational rotation of the shield machine, the shield machine needs to be disassembled, and the shield machine is directly rotated by using a winch and large-scale hoisting equipment, so that the method usually needs a large working space and a large working field, and certain safety risk exists in the use process of the heavy shield machine; when the steel sleeve is adopted for the translational rotation of the shield tunneling machine, a plurality of pushing oil cylinders are required to be installed on the periphery of the steel sleeve, and the rotation is completed by overcoming the friction resistance between a base of the steel sleeve and a bottom plate.
Disclosure of Invention
The invention aims to provide a device for assisting a shield tunneling machine in translation and rotation, which is used as a carrier for the translation and rotation of the shield tunneling machine, converts the traditional sliding friction into rolling friction, reduces the resistance of the translation and rotation of the shield tunneling machine, and improves the construction efficiency under the condition of ensuring the construction safety. The invention also provides a construction method of the device for assisting the translation and rotation of the shield tunneling machine, which is characterized in that the auxiliary device is additionally arranged at the bottom of the steel sleeve on the basis of the translation and rotation construction of the shield tunneling machine by using the steel sleeve and the oil cylinder, so that the friction resistance is reduced, the control precision is improved, and the environmental suitability is strong.
To achieve these objects and other advantages and in accordance with the purpose of the invention, a device for assisting translation and rotation of a shield tunneling machine is provided, which includes a plurality of auxiliary tools, wherein any one of the auxiliary tools includes:
the bottom of the middle seat is provided with a plurality of rolling parts and rolls on the ground through the plurality of rolling parts;
the top seat is arranged above the middle seat and is hinged with the middle seat;
and the anti-drop plates are arranged on the top surface of the middle seat at intervals along the periphery of the top seat.
Preferably, the top seat comprises a connecting piece which is hinged with a hemispherical groove arranged at the top of the middle seat, and the connecting piece is matched with the groove in shape; and the platform is arranged above the connecting piece and is fixedly connected with the connecting piece.
Preferably, the connecting piece is a hemisphere, and the depth of the groove is smaller than the radius of the connecting piece.
Preferably, in the device for assisting the translation and rotation of the shield tunneling machine, the middle base is a triangular support formed by three support legs at the same end point.
Preferably, in the device for assisting the translation and rotation of the shield tunneling machine, any rolling part comprises a steel ball which is clamped in a mounting groove formed in the bottom of the support leg and is in rolling connection with the mounting groove; and the limiting rings are sleeved outside the steel balls and fixed on the periphery of the mounting groove through bolts, and the inner diameter of any limiting ring is smaller than the diameter of the steel ball.
Preferably, in the device for assisting the translation and rotation of the shield tunneling machine, the plurality of anti-dropping plates are three anti-dropping plates which are respectively arranged on the three support legs, and the height of any anti-dropping plate is greater than that of the platform.
Preferably, the device for assisting the translation and rotation of the shield tunneling machine further comprises a plurality of elastic elements, the elastic elements are arranged on the side walls, close to the top seat, of the plurality of anti-dropping plates and correspond to the anti-dropping plates in a one-to-one manner, and any one elastic element is in contact with the top seat in a free state.
The invention also provides a construction method of the device for assisting the shield tunneling machine to translate and rotate, which comprises the following steps:
firstly, carrying out bottom plate pouring construction on a tunnel, paving a plurality of steel plates on the poured bottom plate, wherein the steel plates completely cover the bottom plate, and welding any two adjacent steel plates by adopting a V-shaped groove;
designing translation and rotation paths of the shield tunneling machine and marking corresponding marks in a working well according to the actual position and tunnel planning after the shield tunneling machine receives;
step three, mounting a plurality of counter-force backer on a steel plate on one side of the shield tunneling machine opposite to the advancing direction of the shield tunneling machine, arranging the counter-force backer at intervals along the direction vertical to the translation path, and detachably connecting the counter-force backer with the steel plate;
step four, calculating the number of the required devices for the translation and rotation of the auxiliary shield tunneling machine according to the total weight of the shield tunneling machine and the steel sleeve, installing 80% of the devices for the translation and rotation of the auxiliary shield tunneling machine in the middle of the bottom surface of the steel sleeve base, and welding the top surface of a top seat of any one device for the translation and rotation of the auxiliary shield tunneling machine with the bottom surface of the steel sleeve base;
fifthly, hoisting the bottom surface of the steel sleeve base downwards from the working well, and assembling the steel sleeve in blocks in sequence; after the shield tunneling machine enters the interior of the steel sleeve and is received, leveling construction is carried out on the steel sleeve and the shield tunneling machine by using a PLC jacking system, a jack system, a shoe supporting plate and a slope adjusting support, then the left 20% of devices for assisting the translation and rotation of the shield tunneling machine are installed on two sides of the bottom surface of the steel sleeve base, and the installation method is the same as that in the fourth step;
installing a plurality of jacks between the plurality of counter-force buttresses and the side wall of the steel sleeve base, wherein any jack is hinged with the corresponding counter-force buttresses and the steel sleeve base respectively, and pushing the steel sleeve along the specified translation direction by using the jack; when the jacking distance of the jack reaches the upper limit, removing the connection between the jack and the steel sleeve base and retracting the jack oil cylinder, removing the counter-force buttresses and the jack and resetting the counter-force buttresses and the jack along the translation direction of the steel sleeve, jacking the steel sleeve by using the jack again, and repeating the jacking process until the steel sleeve reaches the specified translation distance;
seventhly, changing the installation positions of a plurality of counter-force buttresses on the steel plate according to the specified turning direction and angle, wherein the installation direction of any counter-force buttresses is tangent to the specified turning contour line, a plurality of jacks are installed between the counter-force buttresses and the steel sleeve base, any jack is hinged with the corresponding counter-force buttresses and the steel sleeve base respectively, and the steel sleeve is pushed to rotate by a certain angle by the aid of the jacks; and when the jacking distance of the jack reaches the upper limit, removing the connection between the jack and the steel sleeve base and retracting the jack oil cylinder, removing the counter-force buttresses and the jack, resetting the counter-force buttresses and the jack along the rotation direction of the steel sleeve, jacking the steel sleeve by using the jack again, and repeating the process until the steel sleeve reaches the specified rotation angle.
Preferably, in the construction method of the device for assisting the translation and rotation of the shield machine, in the seventh step, before the shield machine performs rotation construction, a plurality of monitoring points are arranged on the steel sleeve, a plurality of industrial cameras arranged on a cross beam at the top end of a working well are used for monitoring the moving path of the shield machine during rotation construction, and monitoring data are transmitted to a visual comprehensive platform for judgment and early warning.
Preferably, in the seventh step, the maximum angle of single rotation of the steel sleeve is pushed by a jack to be 7.5-10.5 °.
The invention at least comprises the following beneficial effects:
1. the sliding friction between the steel sleeve and the ground in the translation construction of the traditional shield tunneling machine is converted into rolling friction by being arranged between the steel sleeve and the ground as a carrier for assisting the translation and rotation of the shield tunneling machine, so that the translation and rotation resistance of the shield tunneling machine is greatly reduced, the number of required oil cylinder groups is reduced, the construction cost is reduced, and the construction efficiency is improved;
2. the top seat and the middle seat are hinged, and the oil cylinder group is matched to realize in-situ smooth rotation of the steel sleeve at any angle within the range of 360 degrees, so that the required rotation space is small, and the influence on the ground and the surrounding environment is small;
3. the whole device is simple in structure, high in bearing capacity and convenient to operate, the bearing requirements of shield machines with different specifications can be met by changing the number of the auxiliary tools, the application range is wide, and the operability is high;
4. adopt visual comprehensive platform cooperation monitoring point and monitoring facilities to carry out real-time supervision to the displacement route at the shield constructs quick-witted construction process of turning, thereby can send the early warning when the route of turning deviates from former fixed track and make things convenient for the operation personnel in time to investigate the problem point and handle, guaranteed translation and the accuracy of turning.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is a front view of an apparatus for assisting translation and rotation of a shield tunneling machine according to an embodiment of the present invention;
FIG. 2 is a top view of the device for assisting the translation and rotation of the shield tunneling machine in the above embodiment;
fig. 3 is a bottom view of the device for assisting the translation and rotation of the shield tunneling machine in the embodiment;
fig. 4 is a construction flow chart of the device for assisting the translation and rotation of the shield tunneling machine in the embodiment;
fig. 5 is a schematic horizontal construction plan view of the device for assisting the translation and rotation of the shield tunneling machine in the embodiment;
fig. 6 is a schematic view of a swivel construction plane of the device for assisting the translation and swivel of the shield tunneling machine in the embodiment;
fig. 7 is a distribution schematic diagram of the device for assisting the translation and rotation of the shield tunneling machine in the embodiment;
fig. 8 is a schematic view of the connection structure of the counter-force backer and the jack in the above embodiment.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
It is to be noted that the experimental methods described in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials, if not otherwise specified, are commercially available; in the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1 to 8, the present invention provides a device for assisting a shield tunneling machine in translation and rotation, which includes a plurality of auxiliary tools, and any one of the auxiliary tools includes:
a middle seat 1, the bottom of which is provided with a plurality of rolling parts and rolls on the ground through the plurality of rolling parts;
a top seat 2, which is arranged above the middle seat 1 and is hinged with the middle seat;
and the anti-drop plates 3 are arranged on the top surface of the middle seat 1 at intervals along the periphery of the top seat 2.
In the technical scheme, the shield tunneling machine is arranged in the steel sleeve, the steel sleeve base is connected with the upper surfaces of the footstock 2 of the auxiliary tools, and the steel sleeve walks on the ground through the rolling parts under the pushing of the oil cylinder so as to realize the translation of the shield tunneling machine. When the device for assisting the translation and rotation of the shield tunneling machine is used for assisting the rotation, the oil cylinder applies thrust for enabling the steel sleeve to rotate in the circumferential direction, and the steel sleeve drives the top seat 2 to synchronously rotate on the middle seat 1. The number of the auxiliary tools is set according to the size and the weight of the whole steel sleeve and the shield tunneling machine.
The steel sleeve is used as a carrier of the steel sleeve and connected with the steel sleeve base, sliding friction between the steel sleeve and the ground in the traditional steel sleeve translation construction is converted into rolling friction through the rolling part at the bottom, and the sliding friction between the steel sleeve and the ground in the steel sleeve rotation construction is converted into the sliding friction between the footstock and the middle seat through the footstock hinge structure at the upper part, so that the friction coefficient when the steel sleeve and the ground move relatively in the traditional translation rotation construction is reduced, the number of oil cylinder groups is reduced, and the construction efficiency is improved. Simultaneously, set up the anticreep board on the middle seat, can prevent effectively that the footstock from breaking away from the middle seat because rotation amplitude is too big when rotating on the middle seat, guaranteed the stability of integrated device in work.
In another technical solution, in the device for assisting the translation and rotation of the shield tunneling machine, the top seat 2 includes a connecting piece 21, which is hinged with a hemispherical groove arranged at the top of the middle seat 1, and the connecting piece 21 is matched with the shape of the groove; and a platform 22 which is arranged above the connecting piece 21 and is fixedly connected with the connecting piece. In this embodiment, the platform 22 is preferably a cylinder, and its upper surface is fixedly connected to the steel sleeve base; when the device is in the working state of the auxiliary shield machine rotating body, the connecting piece 21 rotates centripetally in the groove.
In another technical scheme, in the device for assisting the translation and rotation of the shield tunneling machine, the connecting piece 21 is a hemisphere, and the depth of the groove is smaller than the radius of the connecting piece. Wherein the diameter of the connecting piece 21 is equal to the diameter of the groove, and the depth of the groove is set to be smaller than the radius of the connecting piece so as to facilitate the free rotation of the connecting piece in the groove. In actual work, a mode of smearing lubricating oil between the connecting piece 21 and the groove can be adopted, so that the friction coefficient between the connecting piece and the groove is further reduced, and the connecting piece can smoothly rotate in the groove in the rotating process.
In another technical scheme, in the device for assisting the translation and rotation of the shield tunneling machine, the middle base 1 is a triangular support formed by three support legs at a common end point. The stability of the whole device structure is enhanced by setting the middle seat 1 as a triangular bracket structure.
In another technical scheme, any rolling part of the device for assisting the translation and rotation of the shield tunneling machine comprises a steel ball 4 which is clamped in a mounting groove formed in the bottom of a supporting leg and is in rolling connection with the mounting groove; and the limiting rings 5 are sleeved outside the steel balls 4 and fixed on the periphery of the mounting groove through bolts, and the inner diameter of any limiting ring 5 is smaller than the diameter of the steel balls 4. The limiting ring 5 is of an annular structure and plays a role in preventing the steel ball from falling off from the mounting groove in rolling through the limiting ring. The steel balls 4 are arranged in the corresponding mounting grooves, and through the arrangement of the plurality of steel balls in rolling contact with the ground, the indirect contact area between the middle seat and the ground is increased as much as possible while the friction coefficient is reduced, and the stability of the device in the walking process is further ensured.
In another technical solution, in the device for assisting the translation and rotation of the shield tunneling machine, the plurality of anti-separation plates 3 are three anti-separation plates, which are respectively arranged on the three support legs, and the height of any one of the anti-separation plates 3 is greater than the height of the platform 22. In the technical scheme, the three anti-dropping plates respectively correspond to the three support legs of the middle seat, and limit the rotating top seat from three directions, so that the rotating angle of the connecting piece 21 in the groove can be effectively limited; and meanwhile, the platform is allowed to incline for a certain angle relative to the horizontal plane, and the shield machine rotating operation can be completed by conveniently using the steel sleeve.
In another technical solution, the device for assisting the translation and rotation of the shield tunneling machine further includes a plurality of elastic elements 6, which are disposed on the side walls of the plurality of anti-separation plates 3 close to the top base 2 and correspond to the top base 2 one by one, and any one of the elastic elements 6 is in contact with the top base 2 in a free state. Elastic element one end is fixed on the lateral wall of anticreep board, and the other end sets up towards the center of footstock, and when elastic element was in free state, its free end and platform 22's outer wall contact, it is right the footstock plays the effect of protection, prevents that it from colliding with the anticreep board in work and causing the damage, provides reverse effort for platform 22 rotation on the horizontal direction simultaneously, makes the operation of turning more gentle, has improved integrated device's stability.
The invention also provides a construction method of the device for assisting the shield tunneling machine to translate and rotate, which comprises the following steps:
firstly, carrying out bottom plate pouring construction on a tunnel, laying a plurality of steel plates 9 on the poured bottom plate, wherein the steel plates completely cover the bottom plate, and welding any two adjacent steel plates 9 by adopting a V-shaped groove;
designing translation and rotation paths of the shield tunneling machine and marking corresponding marks in a working well according to the actual position and tunnel planning after the shield tunneling machine receives;
step three, mounting a plurality of counter-force backer 8 on a steel plate 9 on one side of the shield tunneling machine opposite to the advancing direction of the shield tunneling machine, arranging the counter-force backer 8 at intervals along the direction vertical to the translation path, and detachably connecting the counter-force backer with the steel plate 9;
step four, calculating the number of the devices 10 for assisting the translation and rotation of the shield tunneling machine according to the total weight of the shield tunneling machine and the steel sleeve, installing 80% of the devices 10 for assisting the translation and rotation of the shield tunneling machine in the middle of the bottom surface of the steel sleeve base 71, and welding the top surface of the platform 22 of the top seat 2 of any device 10 for assisting the translation and rotation of the shield tunneling machine with the bottom surface of the steel sleeve base 71;
fifthly, hoisting the bottom surface of the steel sleeve base 71 downwards from the working well, and assembling the steel sleeves in blocks in sequence; after the shield tunneling machine enters the steel sleeve to be received, leveling construction is carried out on the steel sleeve and the shield tunneling machine by using a PLC jacking system, a jack system, a shoe supporting plate and a slope adjusting support, and then the device 10 for assisting the translation and rotation of the shield tunneling machine is installed on two sides of the bottom surface of the steel sleeve base 71, wherein the installation method is the same as that in the fourth step;
sixthly, correspondingly mounting a plurality of jacks 81 between the plurality of counter-force buttresses 8 and the side wall of the steel sleeve base 71, wherein any jack 81 is hinged with the corresponding counter-force buttresses 8 and the steel sleeve base 71 respectively, and pushing the steel sleeve 7 along the specified translation direction by using the jack 81; when the jacking distance of the jack 81 reaches the upper limit, removing the connection between the jack 81 and the steel sleeve base 71 and retracting a jack oil cylinder, removing the counter-force backer 8 and the jack 81, resetting the counter-force backer and the jack 81 along the translation direction of the steel sleeve 7, jacking the steel sleeve by using the jack 81 again, and repeating the jacking process until the steel sleeve 7 reaches the specified translation distance;
seventhly, changing the installation positions of the multiple reaction buttresses 8 on the steel plate according to the specified turning direction and angle, wherein the installation direction of any reaction buttresses 8 is tangent to the specified turning contour line, multiple jacks 81 are installed between the multiple reaction buttresses 8 and the steel sleeve base 71, any jack 81 is hinged with the corresponding reaction buttresses 8 and the corresponding steel sleeve base 71 respectively, and the jack 81 is used for pushing the steel sleeve 7 to rotate for a certain angle; when the jacking distance of the jack 81 reaches the upper limit, removing the connection between the jack 81 and the steel sleeve base 71 and retracting the jack oil cylinder, removing the counter-force backer 8 and the jack 81, resetting the counter-force backer and the jack 81 along the rotating direction of the steel sleeve 7, jacking the steel sleeve 7 by using the jack 81 again, and repeating the process until the steel sleeve reaches the specified rotating angle.
In the technical scheme, the shield tunneling machine enters the inside of the steel sleeve 7 after receiving the signals, and the plurality of devices 10 for assisting the shield tunneling machine to translate and swivel are supported below the steel sleeve base 71, so that the steel sleeve 7 rolls on the ground through the rolling parts of the devices 10 for assisting the shield tunneling machine to translate and swivel, and the friction force between the steel sleeve and the ground when the steel sleeve moves relative to the ground in the translation and swivel processes is reduced. The top seat 2 is fixedly connected with the steel sleeve base 71 through the platform 22 at the upper part of the top seat, and the steel sleeve 7 can freely rotate around the center of the groove within a certain range through the steel sleeve base 71 because the connecting piece 21 at the lower part of the top seat 2 is hinged with the groove of the middle seat 1. Therefore, when the jack 81 is used for pushing the steel sleeve base 71 to enable the steel sleeve 7 to rotate, on one hand, the steel sleeve base is in rolling connection with the ground through the device 10 for assisting the shield tunneling machine in translation and rotation, and friction resistance between the steel sleeve base and the ground is reduced; on the other hand, the steel sleeve base is hinged with the middle seat 1 through the connecting piece 21 of the top seat, so that the frictional resistance between the steel sleeve base and the middle seat is reduced; the acting force required for pushing the steel sleeve base to rotate is greatly reduced. Meanwhile, the jack is connected with the steel sleeve base and the counter-force backer through U-shaped hinges, so that the jack smoothly pushes the steel sleeve to generate displacement in the construction of the translational swivel, and the situation that jacking irons at different angles are frequently padded or the position of the counter-force backer is changed to adapt to the change of the pushing direction and the pushing angle after the steel sleeve is displaced is avoided.
According to the invention, the plurality of devices for assisting the translation and rotation of the shield tunneling machine are arranged below the steel sleeve, so that the sliding friction between the steel sleeve and the ground in the translation and rotation processes of the shield tunneling machine is converted into rolling friction, the steel sleeve can roll on the steel plate at the bottom of the tunnel through the rolling part at the bottom, the friction resistance in the movement process of the shield tunneling machine is reduced, and the working efficiency of the translation and rotation construction of the shield tunneling machine is improved. Meanwhile, the base at the bottom of the steel sleeve is fixedly connected with the platform of the top seat, the top seat freely rotates along the spherical center of the hemispherical groove of the middle seat, when the shield tunneling machine rotates for construction, the jack pushes the steel sleeve base to rotate, the top seat, the middle seat and the ground all rotate relatively, the friction resistance during rotation is further reduced, and the shield tunneling machine can smoothly rotate to any angle within the range of 360 degrees. The shield machine rotating device is high in applicability, and can realize in-situ rotation of the shield machine after the device for assisting the translation and rotation of the shield machine is additionally arranged, other large-scale construction equipment is not needed, and the occupied construction space is small; meanwhile, the number of the devices for assisting the shield tunneling machine in translation and rotation is designed according to the sizes of the shield tunneling machine and the steel sleeve, and different requirements for translation and rotation angles can be met.
In another technical scheme, the construction method of the device for assisting the translation and rotation of the shield machine comprises the seventh step of arranging a plurality of monitoring points 11 on the steel sleeve 7 before the shield machine performs rotation construction, monitoring the moving path of the shield machine by using a plurality of industrial cameras arranged on a cross beam at the top end of a working well during rotation construction, and transmitting monitoring data to a visual comprehensive platform for judgment and early warning. Specifically, the steps of monitoring the shield tunneling machine rotation body by using the visual platform are as follows:
A. arrangement of measuring points and monitoring equipment
Monitoring points are arranged at four corner points and the central position on the periphery of the steel sleeve 7; the monitoring equipment adopts industrial cameras, the arrangement positions are 4 of left and right working well top end beams, and the industrial cameras can automatically transmit acquired data to a steel sleeve webpage monitoring visual comprehensive platform for monitoring;
B. data entry
Acquiring three-dimensional space coordinates of a steel sleeve translation and rotation path by using a total station, and inputting all control line data into a steel sleeve webpage monitoring visual comprehensive platform in advance; guiding the three-dimensional numerical model of the steel sleeve into a webpage platform, and marking the positions of the five measuring points;
C. process monitoring
Displaying all measuring points on corresponding positions of the three-dimensional model in an icon form by an industrial camera arranged at the periphery of the working well, and updating real-time position states of the sleeve and the measuring points on a monitoring platform when measuring point data are updated according to real-time displacement of the steel sleeve by combining a plane layout diagram of the working well; and when the real-time position deviates from the expected path and exceeds the set deviation error range, highlighting and flashing the over-limit point, and sending an alarm to inform a worker.
In another technical scheme, in the construction method of the device for assisting the translation and rotation of the shield tunneling machine, in the seventh step, the jack 81 is used for pushing the steel sleeve 7 to rotate for a single time, and the maximum angle of the steel sleeve 7 is 7.5-10.5 degrees. In the shield tunneling machine rotation construction, a jack pushes a steel sleeve base along the tangential direction of a steel sleeve body to drive the steel sleeve base to rotate, but the distance of single pushing of the jack is limited, if a long-stroke jack is used, the rotation precision when the maximum distance is reached by pushing is not easy to control, and the problem that the position of the steel sleeve after rotation deviates from the original position easily occurs; if a short-stroke jack is used, when the turning angle is large, the turning can be completed by repeatedly pushing for many times, the required time is long, and the construction efficiency is low. Therefore, in order to improve the construction efficiency on the basis of ensuring the rotating precision, the maximum angle value of the single rotation of the jack for pushing the steel sleeve is set to be 7.5-10.5 degrees, namely, when the single pushing distance of the jack reaches the upper limit, the rotating angle of the shield tunneling machine is 7.5-10.5 degrees.
In addition, the construction scheme for the shield tunneling machine to translate and swivel is improved on the basis of CN109519177A, the friction coefficient between the steel sleeve and the ground is reduced by adding the device for assisting the shield tunneling machine to translate and swivel on the bottom surface of the steel sleeve, and the number of the pushing oil cylinders required in the process of swiveling the shield tunneling machine can be reduced by half compared with the original scheme by calculation and experimental data, so that the construction requirement can be met.
Taking the shield machine rotation construction in a specific project as an example, the specific calculation process is as follows:
and carrying out translation and rotation construction on the same steel sleeve and the shield tunneling machine, wherein the total weight of the shield tunneling machine is 1400t, the weight of filler in the sleeve is 240t, the self weight of the sleeve is 600t, the total weight of the oil cylinder is about 20t, and the total weight is 2260 t.
The original scheme is as follows: the shield machine is turned according to the steel plate surface friction coefficient of 0.1 (steel ball and steel plate friction, 1.5 times of safety margin), the total thrust of the oil cylinders required during turning is 230 tons, and the quantity of the oil cylinders required is determined by the whole weight of the steel sleeve and the sliding friction coefficient of the plastic bottom plate. Here, 4 cylinders of 63t (20MPa) and 1100 strokes are selected for the swivel. Each oil cylinder can independently move forwards and backwards in control, the four oil cylinders can simultaneously move forwards and backwards, and when errors occur in cooperative action, the error oil cylinders are independently adjusted.
The scheme is as follows: the shield machine is turned according to the rolling friction coefficient of 0.05 (steel ball and steel plate friction, 1.5 times of safety margin) of steel plate face and steel ball, the total thrust of the oil cylinder required during turning is 115 tons, under the condition that the specification of a single oil cylinder is the same as that of the original scheme, only 2 oil cylinders 63t (20MPa) are needed, and the oil cylinder with the stroke 1100 is used for turning, so that the requirement of the total thrust can be met.
Therefore, the device for assisting the translation and rotation of the shield machine is used for carrying out translation and rotation construction on the shield machine, the number of the oil cylinders can be greatly reduced, the time for repeatedly dismounting and mounting the oil cylinders in the construction is reduced, the number of people required by the construction is further saved, and the construction efficiency is improved.
Taking the shield tunneling machine rotation construction in the above engineering as an example, the construction method for performing the shield tunneling machine translation and rotation by using the device for assisting the shield tunneling machine translation and rotation in the present invention is as follows:
1. shield translation and rotation construction preparation
1.1 shield swivel space and datum preparation
Retesting the shield tunneling machine rotation space, measuring the elevation and the flatness of the bottom plate at the same time, and chiseling the bottom surface of the bottom plate and the invasion limiting structure if necessary; the pouring of the bottom plate adopts negative tolerance control, the 2000 multiplied by 6000 multiplied by 20mm steel plates are fully paved after mortar leveling, V-shaped grooves of 60 degrees are welded and polished between the steel plates, the steel plates are connected with the bottom plate through bar planting, the planting depth of phi 22 steel bars is not less than 40cm, and the steel plates are ground after welding. The front of the shield tunneling machine and the sleeve in the translation and rotation directions is not higher than the rear, and the surface height difference is less than or equal to 5mm/m 2.
1.2 arrangement of inner pipelines of shield tunneling machine and equipment reinforcement
The traction oil cylinder reversely pushes the trolley to complete the separation of the shield machine and the rear matching trolley, and the mud-water pipeline, the electromechanical liquid pipeline and the cable are necessarily arranged in the period; in order to reduce the radius of the rotating body, two supporting beams behind the assembling machine are disassembled by a gantry crane.
1.3 translational swivel path confirmation
The shield constructs before the machine translation pushes away to the translation route, rotates the center to the shield constructs the machine normal position and fixes a position, demolishs end cover ring and extension steel ring before rotating, and the diameter of rotating is 19555mm, and the center of rotating is the crossing point of horizontal central line of working well and right line tunnel central line, and this moment is 2253mm apart from left side headwall distance, and front and back headwall distance 523mm, portal side wall hidden column distance are 2197mm, back of the body portal side hidden column 3256 mm. Because the hole door is concave, the space of the end rotating body is slightly increased, and the distance is 685 mm; the open-cut and buried segment is not provided with a deepened segment, the lower part of the open-cut and buried segment has no concave space, and the space is not increased, so that the center of the rotating body can move forward 343mm, and the space at the front end and the rear end is 866 mm; drawing a turning path, wherein a green line is a steel sleeve turning contour line, a red line is a turning control warning line, a blue line is a cavity space line utilizing a tunnel door, a red line is a turning control warning line, the turning does not need to be adjusted when the turning is deflected within 300mm in the small mileage direction, and the turning is immediately adjusted in the large mileage direction when the turning is beyond 300 mm; and determining a steel sleeve translation path by taking the green sleeve rotation contour line and the red rotation control warning line as the standard, and drawing the steel sleeve translation path on a working well bottom plate by using paint.
1.4 counterforce mounted against a hill
The counter-force backer is composed of a 2cm thick steel plate welding frame groove and a batten plate, the counter-force frame is provided with a frame-shaped jack limiting groove, and the jack limiting groove and the counter-force backer are connected by double U-shaped loose hinges; the front pushing surface of the jack and the steel sleeve base are connected by double U-shaped loose hinges in the same way so as to realize smooth displacement in the turning process.
1.5 auxiliary tool installation
Calculating the number of devices for assisting the shield tunneling machine to translate and rotate according to the total weight of the steel sleeve and the shield tunneling machine: in the embodiment, the total weight of the shield tunneling machine is 1400t, the weight of filler in the sleeve is 240t, the self weight of the sleeve is 600t, the total weight of the oil cylinder is about 20t, and 2260t is calculated to determine that 28-34 devices for translation and rotation of the shield tunneling machine can meet the requirement of integral translation and rotation of the steel sleeve; considering the installation space of a steel sleeve base and the stable safety performance of the steel sleeve, 48 devices for assisting the translation and rotation of the shield tunneling machine are configured;
before the steel sleeve is assembled in a well, 38 auxiliary shield tunneling machine translation and rotation devices are arranged in the middle of a steel sleeve base by pre-turning for 90 degrees, and the rolling part of each auxiliary shield tunneling machine translation and rotation device is a sliding steel ball group and comprises 3 auxiliary shield tunneling machine translation and rotation devices
The steel ball, 3 steel balls are installed respectively on the three landing legs of middle seat, and are spacing by the spacing collar, and the steel sleeve base is connected by the platform of footstock on the upper portion of the device of supplementary shield structure machine translation and rotation, and the steel sleeve base can rotate on the middle seat, and pivoted angle receives the restriction of anticreep board.
2. Leveling and translation of steel sleeve and shield tunneling machine
2.1 leveling of Shield tunneling machine
Installing and debugging a PLC jacking system, and checking the cooperation of an oil way, a jack and work; installing a vertical jacking jack system, respectively arranging 5 200T jacks and 5 120T jacks from the front end to the rear end of a cutter head on one side according to the total weight of the shield tunneling machine and the sleeve, and arranging a protection limiting device outside an oil cylinder box; the spherical shoe supporting plate is installed, the piston rod is vertically contacted with the spherical shoe supporting plate through the jacking jack, and the spherical shoe supporting plate can realize self-adjustment due to uneven road surface or gradient; the asynchronous cooperative work of the jacking jacks is realized by utilizing the automatic control of a PLC system of a hydraulic station, the leveling angle of the steel sleeve is adjusted according to the gradient of an actual receiving circuit of the tunnel, and the steel sleeve is leveled to reach the expected gradient of 2.148 degrees so as to take out or place a slope adjusting buttress;
dismantling the slope-adjusting steel buttress, installing devices for assisting the steel sleeve translation and rotation on the side edges, respectively coating lubricating oil on the steel balls and the steel plate at the bottom of the working well to reduce friction, wherein the left side and the right side of the steel sleeve base are respectively 5; the falling jacking oil cylinder retracts to enable the steel ball of the rolling part to be grounded.
2.2 translation of shield tunneling machine
2 100t jacks are arranged between the tunnel portal and the steel sleeve base to push the shield tunneling machine to translate along the axis in the direction of large mileage to the horizontal axis of the shield tunneling machine rotation path; 4 jacks of 50t are arranged between the steel sleeve base and the side wall of the working well, the transverse pushing distance for pushing the shield machine and the steel sleeve along the horizontal direction is 19981mm, the translation pushing is realized by increasing or adjusting an oil cylinder cushion block and continuously moving the position of a counter-force backer, and the pushing is planned for 10 times.
2.3 shield machine 180 degree rotation body
In the embodiment, the rotation angle of the shield tunneling machine is required to be 180 degrees, a rotation path is drawn according to the design and the actual shield tunneling machine and sleeve translation conditions on site, and the position of a counter-force backer is determined; debugging a hydraulic system; monitoring points are distributed at four corner points and the central position of the steel sleeve, and 4 industrial cameras are distributed at the periphery of the working well to monitor the measuring points.
Double U-shaped movable hinges are arranged at the angular points of the steel sleeve base to connect two ends of the steel sleeve base, and form an angle of 45 degrees with the shield tunneling machine and the sleeve support; the jacking oil cylinder is 2 63t jacks, the stroke is 1100mm, the length of the auxiliary jacking iron is 700mm, and the single longest jacking distance is 1800 mm; and loading a hydraulic system, and pushing the steel sleeve base to rotate by 9.5 degrees and a stroke of 1144.5 mm.
In the rotation construction, a visual comprehensive platform is used for observing the rotation path of the sleeve, the rotation paths of 4 monitoring points at the corners of the upper part of the steel sleeve are monitored, meanwhile, the displacement condition of the monitoring points at the center of the steel sleeve is confirmed, and the pushing position and the pushing angle are adjusted if necessary until the shield tunneling machine and the steel sleeve complete 180-degree rotation.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (10)
1. The utility model provides a supplementary shield constructs device of machine translation and turning, its characterized in that includes a plurality of auxiliary fixtures, and arbitrary auxiliary fixture includes:
the bottom of the middle seat is provided with a plurality of rolling parts and rolls on the ground through the plurality of rolling parts;
the top seat is arranged above the middle seat and is hinged with the middle seat;
and the anti-drop plates are arranged on the top surface of the middle seat at intervals along the periphery of the top seat.
2. The device for assisting the translation and rotation of a shield tunneling machine according to claim 1, wherein the top seat comprises a connecting piece hinged with a hemispherical groove provided at the top of the middle seat, and the connecting piece is matched with the shape of the groove; and the platform is arranged above the connecting piece and is fixedly connected with the connecting piece.
3. The device for assisting the translation and rotation of a shield tunneling machine according to claim 2, wherein the connecting member is a hemisphere, and the depth of the groove is smaller than the radius of the connecting member.
4. The device for assisting the translation and rotation of a shield tunneling machine according to claim 2, wherein the middle seat is a triangular bracket consisting of three legs at the same end point.
5. The device for assisting the translation and rotation of a shield tunneling machine according to claim 4, wherein any one of the rolling parts comprises a steel ball which is clamped in and connected with a mounting groove formed in the bottom of the support leg in a rolling manner; and the limiting rings are sleeved outside the steel balls and fixed on the periphery of the mounting groove through bolts, and the inner diameter of any limiting ring is smaller than the diameter of the steel ball.
6. The device for assisting the translation and rotation of a shield tunneling machine according to claim 4, wherein the plurality of anti-slip plates are three anti-slip plates respectively disposed on the three legs, and the height of any one of the anti-slip plates is greater than the height of the platform.
7. The device for assisting the translation and rotation of a shield tunneling machine according to claim 1, further comprising a plurality of elastic members disposed on the sidewalls of the plurality of anti-run-off plates adjacent to the top chassis in a one-to-one correspondence therewith, wherein any one of the elastic members is in contact with the top chassis in a free state.
8. A construction method of a device for assisting translation and rotation of a shield tunneling machine is characterized by comprising the following steps:
firstly, carrying out bottom plate pouring construction on a tunnel, paving a plurality of steel plates on the poured bottom plate, wherein the steel plates completely cover the bottom plate, and welding any two adjacent steel plates by adopting a V-shaped groove;
designing translation and rotation paths of the shield tunneling machine and marking corresponding marks in a working well according to the actual position and tunnel planning after the shield tunneling machine receives;
step three, mounting a plurality of counter-force backer on a steel plate on one side of the shield tunneling machine opposite to the advancing direction of the shield tunneling machine, arranging the counter-force backer at intervals along the direction vertical to the translation path, and detachably connecting the counter-force backer with the steel plate;
step four, calculating the number of the required devices for the translation and rotation of the auxiliary shield tunneling machine according to the total weight of the shield tunneling machine and the steel sleeve, installing 80% of the devices for the translation and rotation of the auxiliary shield tunneling machine in the middle of the bottom surface of the steel sleeve base, and welding the top surface of a top seat of any one device for the translation and rotation of the auxiliary shield tunneling machine with the bottom surface of the steel sleeve base;
fifthly, hoisting the bottom surface of the steel sleeve base downwards from the working well, and assembling the steel sleeve in blocks in sequence; after the shield tunneling machine enters the interior of the steel sleeve and is received, leveling construction is carried out on the steel sleeve and the shield tunneling machine by using a PLC jacking system, a jack system, a shoe supporting plate and a slope adjusting support, then the left 20% of devices for assisting the translation and rotation of the shield tunneling machine are installed on two sides of the bottom surface of the steel sleeve base, and the installation method is the same as that in the fourth step;
installing a plurality of jacks between the plurality of counter-force buttresses and the side wall of the steel sleeve base, wherein any jack is hinged with the corresponding counter-force buttresses and the steel sleeve base respectively, and pushing the steel sleeve along the specified translation direction by using the jack; when the jacking distance of the jack reaches the upper limit, removing the connection between the jack and the steel sleeve base and retracting the jack oil cylinder, removing the counter-force buttresses and the jack and resetting the counter-force buttresses and the jack along the translation direction of the steel sleeve, jacking the steel sleeve by using the jack again, and repeating the jacking process until the steel sleeve reaches the specified translation distance;
seventhly, changing the installation positions of a plurality of counter-force buttresses on the steel plate according to the specified turning direction and angle, wherein the installation direction of any counter-force buttresses is tangent to the specified turning contour line, a plurality of jacks are installed between the counter-force buttresses and the steel sleeve base, any jack is hinged with the corresponding counter-force buttresses and the steel sleeve base respectively, and the steel sleeve is pushed to rotate by a certain angle by the aid of the jacks; and when the jacking distance of the jack reaches the upper limit, removing the connection between the jack and the steel sleeve base and retracting the jack oil cylinder, removing the counter-force buttresses and the jack, resetting the counter-force buttresses and the jack along the rotation direction of the steel sleeve, jacking the steel sleeve by using the jack again, and repeating the process until the steel sleeve reaches the specified rotation angle.
9. The construction method of the device for assisting the translation and rotation of the shield tunneling machine according to claim 8, wherein in the seventh step, before the shield tunneling machine performs rotation construction, a plurality of monitoring points are arranged on the steel sleeve, during the rotation construction, a plurality of industrial cameras arranged on a beam at the top end of the working well are used for monitoring the moving path of the shield tunneling machine, and monitoring data are transmitted to a visual comprehensive platform for judgment and early warning.
10. The method for constructing a device for assisting the translation and rotation of a shield tunneling machine according to claim 8, wherein in step seven, the maximum angle for a single rotation of the steel sleeve is pushed by using a jack is 7.5 ° to 10.5 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010837954.3A CN111946360A (en) | 2020-08-19 | 2020-08-19 | Device for assisting translation and rotation of shield tunneling machine and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010837954.3A CN111946360A (en) | 2020-08-19 | 2020-08-19 | Device for assisting translation and rotation of shield tunneling machine and construction method thereof |
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| CN111946360A true CN111946360A (en) | 2020-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010837954.3A Pending CN111946360A (en) | 2020-08-19 | 2020-08-19 | Device for assisting translation and rotation of shield tunneling machine and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114607396A (en) * | 2022-03-18 | 2022-06-10 | 中铁二局集团有限公司 | Shield or TBM in-situ rotation and translation jacking system and construction method |
-
2020
- 2020-08-19 CN CN202010837954.3A patent/CN111946360A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114607396A (en) * | 2022-03-18 | 2022-06-10 | 中铁二局集团有限公司 | Shield or TBM in-situ rotation and translation jacking system and construction method |
| CN114607396B (en) * | 2022-03-18 | 2024-03-08 | 中铁二局集团有限公司 | Shield or TBM in-situ rotation and translation jacking system and construction method |
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