Double-station platform vehicle for construction of small-diameter curved pipe curtain machine and its use method

Abstract

A double-station platform vehicle for the construction of a small-diameter curved pipe curtain machine and its use method relate to the technical field of tunnel construction equipment. It comprises: a first frame, which is movably fixed in a first tunnel; a top arch starting device is provided in the first frame, comprising: a top arch starting bracket, which is hinged in the first frame and is provided with an arc-shaped guide rail that bends and extends upward, a hinged positioning adjustment oil cylinder is provided on the back of the arc-shaped guide rail, and the tilt angle of the arc-shaped guide rail is controlled by the extension and contraction of the positioning adjustment oil cylinder; a movable top plate, which is fixedly sleeved on the cylinder body of the reverse thrust oil cylinder and is slidably set on the arc-shaped guide rail through the reverse thrust oil cylinder; a fixed clamp, which is detachably fixed near the top position of the arc-shaped guide rail; the present invention ultimately forms a large underground space with an arched structure under the support of the pipe curtain, while achieving the purpose of reducing costs and increasing efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel construction equipment, and in particular to a double-station platform vehicle for constructing a small-diameter curved pipe curtain machine in an underground tunnel and a use method thereof. Background Art

[0002] With the emergence of a large-scale development boom in urban underground space, there are many underground projects with shallow burial depths, irregular cross-sectional dimensions, large lateral spans, and complex geological conditions, such as subway stations, underground complexes, and underground vehicle / pedestrian tunnels. If these underground spaces require arch support due to building limits, higher requirements are placed on the pipe curtain construction equipment and technology, that is, the use of curved jacking construction.

[0003] Underground rail transit is the primary means of commuting within large cities and a crucial means of promoting inter-city connectivity in the future. Traditional subway stations are mostly constructed using the open-cut method. However, in bustling urban areas, open-cut construction requires traffic diversion and the relocation of numerous pipelines, significantly impacting the surrounding environment. The closure of surrounding businesses and the demolition of properties can also lead to increased construction costs, and demolition difficulties can even prevent projects from proceeding. Consequently, in recent years, technical personnel have focused on the research and development of new underground excavation construction equipment and technologies to minimize the impact of large-scale subway construction on the urban environment and urban life. Therefore, the use of curved pipe curtain technology to construct underground spaces, such as underground subway stations, is a pressing issue.

[0004] When using the curved pipe-curtain method to construct underground arched subway stations, one of the key factors affecting the construction quality of the curved pipe-curtain is the position and precision control of the starting and receiving ends of the pipe-curtain machine. Moreover, the starting and receiving ends of the pipe-curtain machine are located in an existing tunnel with limited space, which severely restricts construction conditions. When the curved pipe-curtain group operates continuously, there are problems such as complex construction process, frequent transportation and hoisting in the tunnel, low efficiency, and high cost.

[0005] In the existing technology, such as the "Rectangular Curve Pipe Curve Tunneling Machine" authorized and announced on April 27, 2018, the main disclosure is that the jacking system includes a base, a jacking cylinder and a clamping device, the clamping device is clamped on the outer wall of the rectangular steel pipe section, the mounting seat of the jacking cylinder is fixed on the base, and its piston rod is connected to the clamping device. The axis of the jacking system in this technology is fixed and cannot be adjusted in real time. It is only suitable for the jacking of rectangular pipe curtain machines with a fixed curvature, and can only be used for initial construction, and is not very versatile.

[0006] With the development of technology, the requirements for construction quality and efficiency are constantly increasing. Therefore, on the basis of improving construction efficiency, the development of a curved pipe curtain equipment that can realize the continuous or synchronous implementation of the invert arch and top arch in a tunnel with limited working space is a technical problem that needs to be solved urgently in the industry. Summary of the Invention

[0007] In response to the above problems, the present invention provides a double-station gantry vehicle for the construction of small-diameter curved pipe curtain machines in underground tunnels, which has a compact structure, strong versatility, and meets the requirements of continuous or synchronous implementation of inverted arches and top arches, and a method for using the same.

[0008] The technical solution of the present invention is:

[0009] The double-station gantry vehicle for the construction of small-diameter curved pipe curtain machines in underground tunnels includes:

[0010] The first vehicle frame is movably fixedly disposed in the first tunnel; the first vehicle frame is provided with:

[0011] The top arch launching device includes:

[0012] The top arch starting bracket is hinged in the first frame and is provided with an upwardly curved guide rail 1, and the back of the curved guide rail 1 is provided with a hinged positioning adjustment cylinder 1, and the inclination angle of the curved guide rail 1 is controlled by the extension and contraction of the positioning adjustment cylinder 1;

[0013] A movable top plate 1 is fixedly sleeved on the cylinder body of the reverse thrust cylinder 1 and is slidably arranged on the arc guide rail 1 through the reverse thrust cylinder 1;

[0014] A fixed clamp 1 is detachably fixedly arranged near the top of the arc-shaped guide rail 1;

[0015] There are several movable clamps, each of which is detachably slidably arranged between the fixed clamp and the movable top plate;

[0016] The inverted arch receiving device is arranged on the side of the top arch starting device, and includes:

[0017] a second arc-shaped guide rail, tilted and fixedly arranged in the first frame;

[0018] A second fixed clamp is detachably fixed on the second arc-shaped guide rail near the bottom;

[0019] The movable clamp second is provided with a plurality of movable clamps, which are respectively detachably slidably arranged on the arc-shaped guide rail second and are located above the fixed clamp second;

[0020] The second frame is movably fixed in the second tunnel, and the second frame is provided with:

[0021] A top arch receiving sleeve is fixedly arranged in an inclined manner in the second frame, and is used to retract the pipe curtain head pushed by the top arch starting device into the top arch receiving sleeve;

[0022] The inverted arch launching device comprises:

[0023] The arc-shaped guide rail 3 is tiltably hingedly arranged in the second frame and located on the side of the top arch receiving sleeve. The tilt angle of the arc-shaped guide rail 3 is controlled by extending and retracting a plurality of alignment adjustment cylinders 2 hingedly connected to the second frame.

[0024] A fixed clamp three is detachably fixed on the arc-shaped guide rail three, near the bottom;

[0025] The movable clamp three is provided with a plurality of movable clamps, which are respectively detachably slidably arranged on the arc guide rail three and are located above the fixed clamp three;

[0026] The movable top plate 2 is slidably arranged on the arc-shaped guide rail 3 through a pair of reverse thrust cylinders 2.

[0027] Specifically, the back of the arc-shaped guide rail 1 is further provided with a plurality of hinged locking support rods 1.

[0028] Specifically, the piston rod head of the reverse thrust cylinder 1 is hinged on the top arch starting bracket.

[0029] Specifically, the fixed clamp 1 includes:

[0030] A fixed hoop body, detachably fixed on the arc-shaped guide rail 1;

[0031] A hinged hoop body 1, hinged to one end of the fixed hoop body;

[0032] The second hinged hoop body is hinged to the other end of the fixed hoop body; the second hinged hoop body and the first hinged hoop body are detachably fixedly connected via a connecting piece.

[0033] Specifically, the first frame includes:

[0034] The first frame is provided with support seats on the top, bottom, front and rear sides respectively, which are horizontally retractable by support cylinders;

[0035] A traveling crane, wherein the first frame is provided with a horizontally fixed traveling crane guide rail, and the upper head of the inverted arch receiving device is hoisted into the top arch starting device through the traveling crane on the traveling crane guide rail.

[0036] Specifically, the support seat on the top side is located in the area above the overhead crane guide rail.

[0037] Specifically, the bottom of the first frame is provided with a plurality of supporting legs;

[0038] The bottom of the support leg is provided with a hinged roller.

[0039] Specifically, the outer side surface of the support seat is an arc-shaped structure, which is compatible with the inner wall of the tunnel.

[0040] Specifically, a pair of hinged locking support rods 2 are provided on the back of the arc-shaped guide rail 3.

[0041] The construction method of a double-station gantry vehicle for constructing a small-diameter curved pipe curtain machine in an underground tunnel includes the following steps:

[0042] Step 1: Pull the first carriage equipped with the top arch launching device and the inverted arch receiving device into the first tunnel by a power car, and pull the second carriage equipped with the top arch receiving sleeve and the inverted arch launching device into the second tunnel by a power car;

[0043] Step 2: According to the design drawings, adjust the first and second frames to the correct positions, and use corresponding supports and cylinders to fix the first and second frames to the inner wall of the subway tunnel;

[0044] Step 3: Install the machine head onto the arc guide rail 1 of the top arch starting device, and push it upward outside the first tunnel in advance. After pushing in a length of steel pipe section, install the steel pipe sections and push them in one by one in sequence.

[0045] Step 4: During the cyclic jacking process, the fiber optic gyroscope guidance and control system installed in the curved pipe curtain machine and the correction cylinder of the pipe curtain machine are used to ensure the trajectory of the curved jacking; before the machine head reaches the top arch receiving sleeve, the coordinates of the receiving hole are checked and the three-dimensional coordinates of the machine head are measured, and the angle of the machine head is reasonably adjusted to ensure that the machine head can smoothly enter the top arch receiving sleeve;

[0046] Step 5: After the top arch receiving sleeve is received, use a crane to hoist the machine head in sections onto the invert arch starting device; after debugging, push the pipe curtain machine head downward outside the second tunnel;

[0047] Step 6: During the cyclic jacking process, the fiber optic gyroscope guidance and control system installed in the curved pipe curtain machine and the correction cylinder of the pipe curtain machine are used to ensure the trajectory of the curved jacking; before the machine head reaches the receiving device of the inverted arch, the coordinates of the receiving hole are checked and the three-dimensional coordinates of the machine head are measured, and the angle of the machine head is reasonably adjusted to ensure that the machine head can smoothly enter the receiving device of the inverted arch;

[0048] Step seven: After the inverted arch receiving device is received, use a crane to lift the machine head in sections to the top arch starting device; retract the support seats of the first and second frames that are in contact with the tunnel segments and move them to the next working position. After installation and debugging, carry out the top arch and inverted arch cycle construction until the project is completed.

[0049] In the "tunnel first, station later" construction method (i.e., constructing a bidirectional subway tunnel first, followed by the subway station platform in the middle of the tunnel), one set of standard carriages is equipped with an inverted arch pushing device and a top arch receiving device and placed in one tunnel; another set of standard carriages is equipped with an inverted arch receiving device and a top arch pushing device and placed in the other tunnel. After the specific locations are determined according to the design, the curved pipe curtain machine excavation construction is carried out. This method can also be extended to underground space projects with large transverse spans and arch supports, as well as underground projects with arch supports excavated by two small pilot tunnels. The dimensions of the launching and receiving gantry are appropriately adjusted according to the cross-sectional size of the existing tunnel or small pilot tunnel. If necessary, a transfer platform can be added next to the two gantry gantry gantry gantry to facilitate the disassembly, lifting, and installation of the pipe curtain machine head. Through the standardized and modular launching and receiving gantry, the inverted arch and top arch construction cycles are achieved, ultimately forming a large underground space with an arched structure supported by the pipe curtain, while also achieving the goal of reducing costs and increasing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 It is a structural schematic diagram of the present invention;

[0051] Figure 2 1 is a schematic diagram of the three-dimensional structure of the first frame;

[0052] Figure 3 It is a schematic diagram of the three-dimensional structure of the top arch starting device;

[0053] Figure 4 It is a schematic diagram of the three-dimensional structure of the inverted arch receiving device;

[0054] Figure 5 1 is a schematic diagram of the three-dimensional structure of the second frame;

[0055] Figure 6 It is a schematic diagram of the three-dimensional structure of the inverted arch launching device;

[0056] Figure 7 It is a schematic diagram of the three-dimensional structure of the top arch receiving sleeve;

[0057] Figure 8 This is a three-dimensional structural diagram of the overhead crane installation position;

[0058] Figure 9 This is a schematic diagram of step three;

[0059] Figure 10 This is a schematic diagram of the structure in the top arch of step four;

[0060] Figure 11 This is a schematic diagram of the structure when the top arch is completed in step 4;

[0061] Figure 12 This is a schematic diagram of the structure of step five;

[0062] Figure 13It is a schematic diagram of the structure in the inverted arch;

[0063] Figure 14 This is a schematic diagram of the structure when the inverted arch is completed;

[0064] Figure 15 This is a schematic diagram of the movement of the first and second cars in the tunnel;

[0065] In the figure, 100 is the first frame, 101 is the first frame body, 102 is the supporting cylinder, 103 is the supporting base, 104 is the overhead crane; 105 is the supporting leg;

[0066] 110 is a top arch starting device, 111 is a top arch starting bracket, 112 is an arc guide rail, 113 is a fixed clamp, 114 is a movable clamp, 115 is a reverse thrust cylinder, 116 is a locking support rod, 117 is an alignment adjustment cylinder, and 118 is a movable top plate.

[0067] 120 is an inverted arch receiving device, 121 is an arc guide rail 2, 122 is a fixed clamp 2, and 123 is a movable clamp 2;

[0068] 200 is the second frame,

[0069] 210 is a top arch receiving sleeve,

[0070] 220 is the inverted arch starting device, 221 is the arc guide rail 3, 222 is the alignment adjustment cylinder 2, 223 is the fixed clamp 3, 224 is the movable clamp 3, 225 is the reverse thrust cylinder 2, 226 is the sealing plate, 227 is the rear support cylinder, 228 is the rear support seat, 229 is the locking support rod 2, and 22A is the movable top plate 2;

[0071] I is the first tunnel, II is the second tunnel, III is the top arch tube, and V is the inverted arch tube. DETAILED DESCRIPTION

[0072] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0073] In the description of the present invention, it should be understood that terms such as "upper," "lower," "left," "right," "vertical," and "horizontal" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are used solely to facilitate and simplify the description of the present invention and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0074] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0075] Reference below Figure 1-14 describe the invention;

[0076] The double-station gantry vehicle for the construction of small-diameter curved pipe curtain machines in underground tunnels includes:

[0077] The first frame 100 is movably fixed in the first tunnel; the first frame 100 is provided with:

[0078] The top arch launching device 110 includes:

[0079] The top arch starting bracket 111 is hinged in the first frame and is provided with an upwardly curved and extended arc guide rail 112. The back of the arc guide rail 112 is provided with a hinged positioning adjustment cylinder 117. The tilt angle of the arc guide rail 112 is controlled by the extension and contraction of the positioning adjustment cylinder 117. The tilt angle of the arc guide rail 112 is reasonably adjusted according to the curve radius of the top arch construction of the curved pipe curtain machine.

[0080] The back of the arc guide rail 112 is also provided with a plurality of hinged locking support rods 116. The locking support rods 116 are conventional spare parts. When in a free state, the length can be adjusted according to the telescopic adaptability of the positioning adjustment cylinder 117. After the angle is fixed, the locking support rods 116 are locked and the length cannot be adjusted.

[0081] The movable top plate 118 is fixedly mounted on the cylinder body of the reverse thrust cylinder 115 and is slidably arranged on the arc guide rail 112 through the reverse thrust cylinder 115; the piston rod head of the reverse thrust cylinder 115 is hinged on the top arch starting bracket 111.

[0082] A fixed clamp 113 is detachably fixed and arranged near the top of the arc-shaped guide rail 112;

[0083] Specifically, the fixed clamp 113 includes:

[0084] A fixed hoop body, detachably fixed on the arc-shaped guide rail 112;

[0085] A hinged hoop body 1, hinged to one end of the fixed hoop body;

[0086] The second hinged hoop body is hinged to the other end of the fixed hoop body; the second hinged hoop body and the first hinged hoop body are detachably fixedly connected via a connecting piece.

[0087] In this case, the composition structure of the other movable clamp 114 is the same as that of the fixed clamp 113.

[0088] There are several movable clamps 114, which are detachably slidably arranged between the fixed clamp 113 and the movable top plate 118;

[0089] The inverted arch receiving device 120 is provided on the side of the top arch originating device 110 and includes:

[0090] The second curved guide rail 121 is fixedly arranged in an inclined manner in the first frame 100, corresponding to the direction in which the inverted arch starting device 220 is pushed in; the inclination angle of the second curved guide rail 121 is reasonably adjusted according to the curve radius of the inverted arch construction of the curved pipe curtain machine;

[0091] The second fixed clamp 122 is detachably fixed on the second arc-shaped guide rail 121 near the bottom;

[0092] There are several movable clamps 123, which are detachably slidably arranged on the arc guide rail 121 and are located above the fixed clamp 122;

[0093] The second frame 200 is movably fixedly disposed in the second tunnel II, and is provided with:

[0094] The top arch receiving sleeve 210 is fixedly arranged in an inclined manner in the second frame 200, and the pipe curtain head pushed by the top arch starting device 110 is recovered into the top arch receiving sleeve 210;

[0095] The inverted arch launching device 220 includes:

[0096] The arc guide rail 3 221 is tiltably hingedly disposed within the second frame 200 and is located on the side of the top arch receiving sleeve 210. The tilt angle of the arc guide rail 3 221 is controlled by the extension and contraction of a plurality of second alignment adjustment cylinders 222 hingedly connected to the second frame 200. The tilt angle of the arc guide rail 3 221 is reasonably adjusted according to the curve radius of the inverted arch construction of the curved pipe curtain machine.

[0097] Specifically, a hollow window is provided at the bottom of the second frame 200, and the bottom of the arc-shaped guide rail three 221 extends downward from the window, and its back is hinged to the second frame 200 near the bottom; the back of the arc-shaped guide rail three 221 in this case is provided with a pair of hinged locking support rods two 229, which have the same structure and function as the locking support rod one 116.

[0098] The third fixed clamp 223 is detachably fixed on the third arc guide rail 221, near the bottom;

[0099] There are several movable clamps 224, which are detachably slidably arranged on the arc guide rail 221 and are located above the fixed clamp 223, that is, between the movable top plate 22A and the fixed clamp 223;

[0100] The movable top plate 22A is slidably arranged on the arc guide rail 3 221 through a pair of reverse thrust cylinders 225 .

[0101] A fixedly connected sealing plate 226 is provided at the top of the arc guide rail three 221, and a number of evenly distributed, inclined and fixed rear support cylinders 227 are provided on the sealing plate. The piston rod ends of the rear support cylinders 227 are respectively fixedly connected to the rear support seat 228. The top of the rear support seat 228 is provided with an inclined surface, which is adapted to the inner wall of the tunnel.

[0102] In the prior art, curved pipe curtain machines require pre-hoisting and transport equipment, which then transports them to a designated location for unloading. Manual welding and stabilization of the curved pipe curtain machine are then performed. After each row of pipes is inserted, the machine must be disassembled, moved, and re-stabilized, severely restricting the progress of the steel pipe jacking construction. The frame structure of this invention completely breaks away from the transmission, fixed, and welded positioning method. Taking the first frame 100 as an example:

[0103] The first frame 100 includes:

[0104] The first frame 101 is provided with support seats 103 on the top, bottom, front and rear sides respectively, which are horizontally extended and retracted by support cylinders 102; the support seat 103 on the top side is located in the area above the overhead crane guide rail. In this case, the outer side surface of the support seat 103 is an arc-shaped structure, which is compatible with the inner wall of the tunnel; when designing and installing the support seat 103 on the top side, care must be taken to avoid interfering with the normal operation of the curved pipe curtain machine on the arc guide rail 112.

[0105] The traveling crane 104 is provided with a horizontally fixed traveling crane guide rail in the first frame 101. The traveling crane 104 on the traveling crane guide rail is used to disassemble the upper head of the inverted arch receiving device 120 into sections and then hoist them into the top arch starting device 110.

[0106] The first frame 101 is further optimized, and a plurality of supporting legs 105 are provided at the bottom thereof;

[0107] The bottom of the support leg 105 is provided with a hinged roller. When the bottom support seat 103 is retracted, the roller contacts the bottom of the existing tunnel. When the bottom support seat 103 is extended, the bottom support seat 103 fits the bottom surface of the tunnel.

[0108] The construction method of a double-station gantry vehicle for constructing a small-diameter curved pipe curtain machine in an underground tunnel includes the following steps:

[0109] Step 1: Pull the first carriage 100 equipped with the top arch starting device 110 and the inverted arch receiving device 120 into the first tunnel I by a power car, and pull the second carriage 200 equipped with the top arch receiving sleeve 210 and the inverted arch starting device 220 into the second tunnel II by a power car;

[0110] Step 2: According to the design drawings, adjust the first frame 100 and the second frame 200 to the correct position, and use corresponding supports and cylinders to fix the first and second frames to the inner wall of the subway tunnel; pre-carry out conventional process measures such as stratum reinforcement at the starting and receiving openings of the curved pipe curtain machine;

[0111] Step 3: Install the machine head in sections on the curved guide rail 112 of the top arch starting device 110. After installation and debugging are completed, push it toward the top of the first tunnel 1. After pushing in a length of steel pipe section, install the steel pipe sections one by one.

[0112] Specifically: Figure 3 、 9 As shown, Figure 9 The dotted arrow in the middle indicates the direction of advancement. Open the fixed clamp 113 and the movable clamp 114 on the curved guide rail 112, install the machine head on the curved guide rail 112, and close it. Figure 3 The two movable clamps 114 in the middle start the rotary cutter head and mud discharge pipeline and other facilities on the machine head, and the reverse thrust cylinder 115 drives the movable top plate 118 to push the machine head along the arc guide rail toward the outside and upward of the tunnel;

[0113] When the machine head is pushed forward to the length of one steel pipe section, stop the machine and lock the fixed clamp 113, open the mobile clamp 114, pull the mobile clamp 114 and the mobile top plate 118 back to their original positions by pushing the oil cylinder 115 backward, install the next steel pipe section, and repeat the previous pushing step.

[0114] Step 4: Figure 10-11 As shown, during the cyclic jacking process, the fiber optic gyroscope guidance and control system installed in the curved pipe curtain machine and the correction cylinder of the pipe curtain machine are used to ensure the trajectory of the curved jacking; before the machine head reaches the top arch receiving sleeve 210, the coordinates of the receiving hole are checked and the three-dimensional coordinates of the machine head are measured, and the angle of the machine head is reasonably adjusted to ensure that the machine head can smoothly enter the top arch receiving sleeve 210;

[0115] When the arch reaches the receiving end, the pipe curtain head enters the receiving sleeve 210. After confirming that the arch receiving hole is waterproof, the upper half of the sleeve is disassembled, and the pipe curtain head is disassembled in sections and then hoisted to the invert arch starting device in sections. The receiving sleeve is a modular steel structure, which is easy to install and disassemble.

[0116] Step 5: After the top arch receiving sleeve 210 is received, the crane is used to hoist the machine head in sections onto the inverted arch starting device 220. Figure 12-13 As shown in the figure; after the installation and debugging is completed, push the pipe curtain machine head toward the outside and downward of the second tunnel II;

[0117] Specifically, Figure 6 As shown, the fixed clamp 3 223 is opened, and the two movable clamps 3 224 are fixed to the pipe curtain machine; the pipe curtain machine head is started, and the movable top plate 22A is driven by the reverse thrust cylinder 225 to push the pipe curtain machine head toward the outside and downward of the second tunnel II; when the jacking reaches the length of one steel pipe section, the machine is stopped and the fixed clamp 3 223 is locked, the movable clamp 3 224 is opened, the movable clamp 3 224 and the movable top plate 22A are pulled back to the retracted position of the reverse thrust cylinder 225, the next steel pipe section is installed, and the next jacking cycle is repeated.

[0118] Step 6: During the cyclic jacking process, the fiber optic gyroscope guidance and control system installed in the curved pipe curtain machine and the correction cylinder of the pipe curtain machine are used to ensure the trajectory of the curved jacking; before the machine head reaches the receiving arch receiving device 120, the coordinates of the receiving hole are checked and the three-dimensional coordinates of the machine head are measured, and the angle of the machine head is reasonably adjusted to ensure that the machine head can smoothly enter the inverted arch receiving device 120. Figure 14 As shown;

[0119] 120 is an inverted arch receiving device, 121 is an arc guide rail 2, 122 is a fixed clamp 2, and 123 is a movable clamp 2;

[0120] like Figure 4 As shown, before the pipe curtain machine head enters the inverted arch receiving device 120, the fixed clamp 122 and the two movable clamps 123 are opened; after the pipe curtain machine head enters the arc-shaped guide rail 121, the movable clamp 123 is fixed to the pipe curtain machine head and moves with the pipe curtain machine head. When a new pipe segment is continuously installed at the inverted arch starting device, the fixed clamp 122 is used to fix the pipe curtain machine head to prevent the machine head from retreating. When the pipe segment is pushed in, the fixed clamp 122 is released. Only when the pipe curtain machine head is completely inside the tunnel 1 can it be disassembled in sections and then hoisted.

[0121] Step seven: After the inverted arch receiving device 120 is received, the crane is used to hoist the head of the machine in sections onto the top arch starting device 110; the support seats 103 of the first and second frames in contact with the tunnel segments are retracted and moved to the next working position. After installation and debugging, the top arch and inverted arch are cyclically constructed until the project is completed.

[0122] like Figure 15 As shown, the first frame 100 is located in the first tunnel I, and the second frame 200 is located in the second tunnel II. After the construction task in this area is completed, it moves forward in the direction of the arrow, and finally forms a number of evenly distributed top arch tubes III and a number of evenly distributed inverted arch tubes V.

[0123] It should be noted that after the top arch receiving device completes the reception of the machine head, it switches to the invert arch construction, or after the invert arch receiving device completes the reception of the machine head, it switches to the top arch construction. The switching of the machine head lifting can be reasonably adjusted according to the size of the existing tunnel. The first method is: the space in the tunnel is relatively large, and the machine head can be disassembled in sections after receiving the top arch (invert arch) in the tunnel and lifted to the starting curved guide rail of the invert arch (top arch) through the traveling crane on the gantry for assembled installation; the second method is: the space in the tunnel is relatively small, and after the machine head receives the top arch (invert arch) in the tunnel, the gantry is pulled as a whole to the working shaft outside the tunnel, and the machine head is lifted as a whole to the starting curved guide rail of the invert arch (top arch) through external lifting equipment, and then the gantry carrying the machine head is pulled to the position to be constructed in the tunnel.

[0124] Regarding the content disclosed in this case, the following points need to be explained:

[0125] (1) The drawings of the embodiments disclosed in this case only involve the structures involved in the embodiments disclosed in this case. Other structures can refer to the general design;

[0126] (2) In the absence of conflict, the embodiments and features of the embodiments disclosed in this case may be combined with each other to form new embodiments;

[0127] The above are only specific implementation methods disclosed in this case, but the protection scope of this disclosure is not limited thereto. The protection scope disclosed in this case should be based on the protection scope of the claims.

Claims

1. The double-station gantry vehicle for the construction of small-diameter curved pipe curtain machines is characterized by: include: A first vehicle frame (100) is movably and fixedly arranged in the first tunnel; The first vehicle frame (100) is provided with: The top arch launching device (110) comprises: The top arch starting bracket (111) is hinged in the first vehicle frame and is provided with an arc-shaped guide rail (112) that bends and extends upward. The back of the arc-shaped guide rail (112) is provided with an articulated positioning adjustment cylinder (117). The tilt angle of the arc-shaped guide rail (112) is controlled by the extension and contraction of the positioning adjustment cylinder (117). A movable top plate (118) is fixedly sleeved on the cylinder body of a reverse thrust cylinder (115) and is slidably arranged on the arc guide rail (112) through the reverse thrust cylinder (115); A fixed clamp (113) is detachably fixedly arranged at a top position close to the arc-shaped guide rail (112); A plurality of movable clamps (114) are provided, each of which is detachably and slidably arranged between the fixed clamp (113) and the movable top plate (118); The inverted arch receiving device (120) is arranged on the side of the top arch starting device (110), and comprises: A second arc-shaped guide rail (121) is tilted and fixedly arranged in the first vehicle frame (100); A second fixed hoop (122) is detachably fixedly arranged on the second arc-shaped guide rail (121) near the bottom; The movable clamp second (123) is provided with a plurality of movable clamps, which are respectively detachably slidably arranged on the arc-shaped guide rail second (121) and are located above the fixed clamp second (122); The second vehicle frame (200) is movably fixedly arranged in the second tunnel, and the second vehicle frame (200) is provided with: A top arch receiving sleeve (210) is fixedly arranged in an inclined manner in the second vehicle frame (200) and is used to retract the pipe curtain head pushed by the top arch starting device (110) into the top arch receiving sleeve (210); The inverted arch launching device (220) comprises: The arc guide rail three (221) is tiltably hingedly arranged in the second vehicle frame (200) and is located on the side of the top arch receiving sleeve (210). The tilt angle of the arc guide rail three (221) is controlled by the extension and contraction of a plurality of positioning adjustment cylinders two (222) hingedly connected to the second vehicle frame (200); A fixed clamp three (223) is detachably fixed on the arc-shaped guide rail three (221) near the bottom; A plurality of movable clamps (224) are provided, each of which is detachably slidably arranged on the arc guide rail (221) and is located above the fixed clamp (223); A movable top plate 2 (22A) is slidably arranged on the arc-shaped guide rail 3 (221) via a pair of reverse thrust cylinders 2 (225); The first vehicle frame (100) comprises: The first frame (101) is provided with support seats (103) on the top, bottom, front and rear sides thereof, which are horizontally retractable via support cylinders (102); A traveling crane (104) is provided in the first frame (101) with a horizontally fixed traveling crane guide rail, and the upper head of the inverted arch receiving device (120) is hoisted into the top arch starting device (110) in sections by the traveling crane (104) on the traveling crane guide rail.

2. The double-station gantry vehicle for the construction of a small-diameter curved pipe curtain machine according to claim 1 is characterized in that: The back of the arc-shaped guide rail 1 (112) is also provided with a plurality of hinged locking support rods 1 (116).

3. The double-station gantry vehicle for the construction of a small-diameter curved pipe curtain machine according to claim 1 is characterized in that: The piston rod head of the reverse thrust cylinder 1 (115) is hinged on the top arch starting bracket (111).

4. The double-station gantry vehicle for the construction of a small-diameter curved pipe curtain machine according to claim 1 is characterized in that: The fixed clamp 1 (113) includes: A fixed hoop body, detachably fixed on the arc-shaped guide rail 1 (112); A hinged hoop body 1, hinged to one end of the fixed hoop body; The second hinged hoop body is hinged to the other end of the fixed hoop body; the second hinged hoop body and the first hinged hoop body are detachably fixedly connected via a connecting piece.

5. The double-station gantry vehicle for the construction of a small-diameter curved pipe curtain machine according to claim 1 is characterized in that: The support seat (103) on the top side is located in the area above the overhead crane guide rail.

6. The double-station gantry vehicle for the construction of a small-diameter curved pipe curtain machine according to claim 1 is characterized in that: The outer side surface of the support seat (103) is an arc-shaped structure, which is adapted to the inner side wall of the tunnel.

7. The double-station gantry vehicle for the construction of a small-diameter curved pipe curtain machine according to claim 1 is characterized in that: A plurality of supporting legs (105) are provided at the bottom of the first frame (101); The bottom of the support leg (105) is provided with a hinged roller.

8. The double-station gantry vehicle for the construction of a small-diameter curved pipe curtain machine according to claim 1 is characterized in that: A pair of hinged locking support rods 2 (229) are provided on the back of the arc-shaped guide rail 3 (221).

9. A method for using a double-station gantry truck for the construction of a small-diameter curved pipe curtain machine, comprising the double-station gantry truck for the construction of a small-diameter curved pipe curtain machine according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1: Pull the first vehicle frame (100) equipped with the top arch starting device (110) and the inverted arch receiving device (120) into the first tunnel by a power vehicle, and pull the second vehicle frame (200) equipped with the top arch receiving sleeve (210) and the inverted arch starting device (220) into the second tunnel by a power vehicle; Step 2: According to the design drawings, the first frame (100) and the second frame (200) are adjusted to the correct positions, and the first and second frames are fixed to the inner wall of the subway tunnel using corresponding supports and oil cylinders; Step 3: Install the machine head in sections on the arc guide rail 1 (112) of the top arch starting device (110). After installation and debugging are completed, push the machine head toward the top of the first tunnel. After pushing in a length of steel pipe section, install the steel pipe sections and push them in one by one. Step 4: During the cyclic jacking process, the fiber optic gyroscope guidance and control system installed in the curved pipe curtain machine and the correction cylinder of the pipe curtain machine are used to ensure the trajectory of the curved jacking; before the machine head reaches the top arch receiving sleeve (210), the coordinates of the receiving hole are checked and the three-dimensional coordinates of the machine head are measured, and the angle of the machine head is reasonably adjusted to ensure that the machine head can smoothly enter the top arch receiving sleeve (210); Step 5: After the top arch receiving sleeve (210) is received, the machine head is disassembled into sections using a crane and then hoisted onto the inverted arch starting device (220); After installation and commissioning, push the pipe curtain machine head downward to the outside of the second tunnel; Step 6: During the cyclic jacking process, the fiber optic gyroscope guidance and control system installed in the curved pipe curtain machine and the correction cylinder of the pipe curtain machine are used to ensure the trajectory of the curved jacking; before the machine head reaches the inverted arch receiving device (120), the coordinates of the receiving hole are checked and the three-dimensional coordinates of the machine head are measured, and the angle of the machine head is reasonably adjusted to ensure that the machine head can smoothly enter the inverted arch receiving device (120); Step seven, after the inverted arch receiving device (120) is received, the crane is used to disassemble the machine head into sections and then hoist it onto the top arch starting device (110); the support bases (103) of the first and second frames in contact with the tunnel segments are retracted and moved to the next working position. After installation and debugging, the top arch and inverted arch are cyclically constructed until the project is completed.

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