Horizontal full-revolution casing jacking device and construction method

Abstract

A horizontal full-rotation casing jacking device and construction method are disclosed, relating to the technical field of tunnel construction equipment. It includes a main frame and a rotary propulsion device, the rotary propulsion device comprising a cutting unit and a transition sleeve; the main frame is a frame structure, including four sets of columns in the z-direction formed by coaxial connection of upper and lower support cylinders, a bottom plate at the bottom, and a top plate at the top; a front support cylinder is provided on the surface of the columns of the main frame facing the excavation direction of the connecting tunnel; a rear support cylinder is provided on the back of the main frame; this invention achieves a single-stage stroke, which can increase the length of the connecting pipe, reduce the frequency of connecting pipe replacement, and improve operational efficiency.

Description

Technical Field

[0001] This invention relates to the field of tunnel construction equipment technology; and more particularly to improvements in specialized construction equipment and methods for excavating connecting passages between parallel tunnels. Background Technology

[0002] Subway connecting passages are transverse passages excavated at regular intervals between two subway shield tunnels. They serve as lifelines for safe evacuation and emergency rescue, while also facilitating water collection and drainage within the tunnels. In recent years, with the booming development of underground transportation in China, numerous advanced construction methods and equipment have emerged for the construction of underground tunnels and connecting passages. Examples include: "CN113669075A, Connecting Passage Construction Equipment and System," and "CN113622929 A, Segment Breaking Device, Connecting Passage Construction System and Method." Existing technologies, with power units located at the front end, suffer from the following drawbacks: First, during tunnel wall excavation, the large cutting volume and extreme difficulty arise from the full-section excavation of the concrete tunnel wall. Second, determining the location and excavation angle of the connecting passage within the tunnel is challenging, making high-precision construction difficult.

[0003] To this end, the applicant has conducted relevant research and development on this topic and achieved preliminary research results, such as "CN114876473 A, A subway connecting tunnel excavation equipment and construction method based on horizontal full rotation". This preliminary research result addresses the challenges and complex processes of removing segments from the adjacent inner surfaces of existing parallel main tunnels, proposing an inventive approach of circular cutting excavation while preserving the central soil. The rotary power drive mechanism and propulsion system are positioned at the rear, and the cutting mechanism is arranged in a ring along the casing wall, significantly reducing the penetration force of the cutting rock and soil. With the head tube and steel pipe section forming a protective wall, the central soil is preserved. After the circular cutting excavation is completed, the soil inside the steel pipe section (casing) is removed using external equipment. This solves the problems of traditional mechanical methods for urban subway connecting tunnel construction, such as limited space, difficulty in equipment deployment, large full-section cutting range causing significant damage to the main tunnel, easy attitude deviation when the head tube contacts the reverse arc surface of the main tunnel segments during reception, uncontrollable reception attitude, difficulty in guaranteeing quality, and high equipment manufacturing costs.

[0004] The entire operation process of the aforementioned patented achievement is as follows: the cutting unit performs annular cutting excavation from the inner wall of the starting tunnel; then, the annular cutting unit grinds and cuts the inner wall of the starting tunnel, excavates, and then performs cutting excavation between tunnels; finally, it annularly cuts segments from the outer wall of the receiving tunnel to enter the receiving main tunnel until it is completed. However, during the entire operation, due to the large diameter of the proposed connecting passage, the diameter requiring annular cutting is also large. Since the tunnel walls are generally reinforced concrete structures, this results in a large torque required by the cutting mechanism at both the starting and receiving ends, and a particularly large counter-torque acting on the entire equipment. This counter-torque can lead to two problems: first, it can cause instability in equipment placement; second, in the case of equipment instability, the equipment itself can damage the main tunnel structure at the excavation point and also affect the excavation accuracy of the connecting passage. Furthermore, in this patented achievement, the excavation of the overall length of the connecting passage needs to be achieved through a cycle of "progress-retreat-takeover". The length of the progressive (one continuous advance distance) can only depend on the design stroke of the propulsion cylinder. However, in the narrow radial space of the main tunnel, the size of the propulsion cylinder and feed pipe arranged in a straight line in the excavation axis direction (y direction) is limited, making it difficult to improve the efficiency of progressive. Summary of the Invention

[0005] To address the above-mentioned technical problems, this invention provides a horizontal full-rotation casing jacking device that offers high installation stability, user-friendly operation, and efficient and precise excavation and shaping of connecting passages.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A horizontal full-rotation sleeve jacking device includes a main frame 2 and a rotary propulsion device 4, wherein the rotary propulsion device 4 includes a cutting unit and a transition sleeve 441;

[0008] The main frame 2 is a frame structure, including four sets of columns in the z-direction formed by the coaxial connection of the cylinder sleeves of the upper support cylinder 11 and the bottom support cylinder 51, a bottom plate 21 at the bottom, and a top plate 22 at the top; a front support cylinder 31 is provided on the surface of the columns of the main frame 2 facing the excavation direction of the connecting passage III; a rear support cylinder 61 is provided on the back of the main frame 2.

[0009] The upper support cylinder 11 is connected to an upper support 1 with a slightly curved cross-section. The bottom of the upper support 1 is provided with a sleeve suspension guide rail 12. The bottom support cylinder 51 is connected to a bottom support 5. The rear support cylinder 61 is connected to a rear support 6. The front support cylinder 31 is connected to a front support 3. The front support 3 has a space in the middle that is larger than the cross-sectional profile of the connecting passage III. After the upper support 1, bottom support 5, rear support 6 and front support 3 are raised, they are connected to the inner surface of the main tunnel for abutment.

[0010] The base plate 21 and top plate 22 of the main frame 2 are provided with a y-axis guide rail 211 and an X-axis pipe feeding rail 212, and the X-axis pipe feeding rail 212 is provided with a feeding position 2120.

[0011] The rotary propulsion device 4 includes a propulsion frame 41, a drive device 42, a propulsion cylinder interchangeable bearing interface 43, a large gear ring 44, a small gear 47, and a propulsion cylinder 8; the propulsion frame 41 is in the shape of a vertical plate with a central hole, and the four corners of the propulsion frame 41 are respectively provided with corner guide rail surfaces 46, which are slidably connected to the y-guide rail 211; thus enabling the propulsion frame 41 to reciprocate relative to the main frame 2 in the y-direction. The large gear ring 44 is movably connected to the front of the push frame 41 via a large gear ring slewing bearing 45; the drive device 42 includes at least two sets of drive motors, a reduction gear and a pinion 47, the pinion 47 meshes with the large gear ring 44, the drive motor and the reduction gear are fixed on the push frame 41 and drive the pinion 47 to rotate synchronously; the push cylinder 8 is located between the rear support 6 and the push frame 41, driving the push frame 41 to reciprocate, and the cylinder barrel 81 of the push cylinder 8 is connected to the push frame 41 via a push cylinder interchangeable bearing interface 43.

[0012] Furthermore, a central groove 811 is provided in the middle of the outer surface of the cylinder barrel 81 of the propulsion cylinder 8, and a front groove 812 is provided in the front. The interchangeable bearing interface 43 of the propulsion cylinder has a sliding hole that passes through the propulsion frame 41. The opening of the interchangeable bearing interface 43 of the propulsion cylinder facing the rear support 6 is provided with a slot 431. After inserting a plate into the slot 431, the connection between the propulsion frame 41 and the propulsion cylinder 8 is realized.

[0013] Furthermore, an X-shaped sleeve support structure 23 is provided at the front edge of the main frame 2 facing the communication channel III to support the sleeve.

[0014] Furthermore, a sealing plate is provided at the edge of the corresponding connecting channel III, and an anti-soil slewing bearing plate 7 is provided on the outer surface of the sealing plate. A support plate is also provided at the rear of the anti-soil slewing bearing plate 7, and four anti-soil support cylinders 71 arranged in a cross shape are provided between the support plate and the rear support 6.

[0015] The four anti-soil-rushing support cylinders 71 are arranged in a cross shape, with the cross shape deflected by 15-20° relative to the z-axis. The radius of the anti-soil-rushing support cylinder 71 at the farthest end is 1-1.5 times the radius of the other three cylinders.

[0016] Furthermore, a rear support cylinder connection position 62 adapted to the position of the rear support cylinder 61 is provided on the rear support 6 for connecting the piston rod end of the rear support cylinder connection position 62.

[0017] The rear support 6 is also provided with a drive device receiving groove 63 adapted to the position of the drive device 42, for accommodating the motor or motor of the drive device 42;

[0018] The rear support 6 is also provided with a propulsion cylinder mounting position 64 adapted to the position of the propulsion cylinder 8, for receiving the outer end of the piston rod of the propulsion cylinder 8;

[0019] An anti-soil-rushing support cylinder mounting position 65 is also provided on the rear support 6 to match the position of the anti-soil-rushing support cylinder 71, for fixing the cylinder body of the anti-soil-rushing support cylinder 71.

[0020] Furthermore, the main frame 2 of the frame structure is configured as a lower part 201 and an upper part 202. The lower part 201 includes eight bottom support cylinders 51 fixedly and uprightly connected to the four corners of the base plate 21, with the piston rods of the bottom support cylinders 51 facing downwards. The upper part 202 includes eight upper support cylinders 11 fixedly and uprightly connected to the four corners of the top plate 22, with the piston rods of the upper support cylinders 11 facing upwards.

[0021] The bottom of the upper support cylinder 11 of the upper part 202 of the main frame and the top of the bottom support cylinder 51 of the lower part 201 of the main frame are fixedly connected by a connecting plate.

[0022] A construction method for a horizontal full-rotation casing jacking device according to the present invention includes the following steps:

[0023] 1) Move the entire equipment to the excavation position of the connecting passage III in the main tunnel;

[0024] 2) Adjust the upper, lower, front, and rear supports of the equipment to ensure that the drive mechanism axis of the cutting unit in the gyratory propulsion device is coaxial with the connecting channel III; lock the equipment position; connect the cutting unit to the transition sleeve of the gyratory propulsion device through the first-stage connecting pipe;

[0025] 3) Start the gyroscopic propulsion device and make it move in a straight line towards the direction of the connecting channel III; at the same time, the cutting unit performs a 360° gyroscopic motion under the action of the drive mechanism through the first-stage connecting pipe and / or the connecting pipe.

[0026] 4) When the gyratory propulsion device reaches the propulsion stroke, stop the machine, disassemble the first-stage connecting pipe and the transition sleeve, and then retract the gyratory propulsion device to the initial position; at this time, the cutting unit and the first-stage connecting pipe will be embedded and remain in the soil pre-excavated in the connecting passage III;

[0027] 5) Feed the secondary connector into the primary connector from the delivery position 2120 between the tail end of the primary connector and the transition sleeve, and connect the front end of the secondary connector to the tail end of the primary connector and the rear end to the transition sleeve.

[0028] 6) Repeat steps 1)-5).

[0029] Step 3) involves a two-level progression.

[0030] In the first-stage progression, the central groove 811 on the cylinder barrel 81 of the propulsion cylinder 8 is connected to the slot 431 of the interchangeable bearing interface 43 of the propulsion cylinder on the propulsion frame 41 through a plug plate, so that the propulsion cylinder 8 can work to its full stroke.

[0031] Next, stop the machine, remove the insert plate, allow the propulsion cylinder 8 to retract and reset, connect the front groove 812 on the cylinder barrel 81 of the propulsion cylinder 8 to the slot 431 of the propulsion cylinder interchangeable bearing interface 43 on the propulsion frame 41 through the insert plate, start the machine, and work the propulsion cylinder 8 to its full stroke for the second time.

[0032] Furthermore, in step 3), after the cutting unit cuts the main tunnel (Ⅰ) pipe wall, the connecting channel (Ⅲ) port is formed, and the soil inside is sealed and protected based on the cut and separated circular tile-shaped pipe wall fragments;

[0033] Specifically, a sealing plate and a support plate are attached to the front end of the remaining pipe segment, and a soil-proof slewing bearing plate (7) is provided between the sealing plate and the support plate. The support plate is supported by a soil-proof support cylinder (71).

[0034] Compared with existing technologies, the horizontal full-rotation casing jacking equipment of the present invention is more suitable for the excavation and construction of T-shaped connecting passages in tunnels, and has the following three characteristics:

[0035] Firstly, the equipment is equipped with four arc-shaped supports on the upper, lower (bottom), front, and rear sides, ensuring surface contact between the entire machine and the inner wall of the main tunnel. This effectively constrains the four degrees of freedom: y-axis, z-axis, y-rotation, and z-rotation. The upper, lower, front, and rear supports can be used to adjust the center height and cutting angle to meet design requirements. Once the cutting unit (ring-shaped) directly connected to the first-stage connecting pipe (head pipe) extends into the sidewall of the main tunnel, the X-axis and X-rotation degrees of freedom are constrained by the connecting pipe assembly with a certain rigidity and diameter, achieving comprehensive constraint on all six degrees of freedom during excavation. This prevents damage from reverse forces and vibrations between the equipment and the main tunnel, even during significant reverse torque during excavation. This improves the stability and accuracy of the equipment's placement, avoids impacting the main tunnel structure, and enhances the construction accuracy of the connecting passage.

[0036] Secondly, in this invention, the upper and lower support cylinders themselves serve as the "columns" of the main frame, realizing the compact design of equipment in a small space.

[0037] Thirdly, the improvements to the rotary propulsion device in this invention focus on the following two points: a) the propulsion frame is thinned and made plate-shaped, allowing for more space in the y-direction for the connecting pipe; b) this invention innovatively proposes a specific structure for an "extended-range" propulsion cylinder, achieving a doubling of the drive stroke using a cylinder of limited dimensions. That is, the cylinder performs two reciprocating motions in one drive stroke, increasing the stroke by one H. This allows for a stepped stroke within a limited space, increasing the length of the connecting pipe, reducing the frequency of connecting pipe replacement, and improving operational efficiency. Attached Figure Description

[0038] Figure 1 This is a schematic diagram illustrating the working task of the present invention.

[0039] Figure 2 This is a three-dimensional structural diagram of the entire device of the present invention.

[0040] Figure 3 This is a three-dimensional structural diagram of the mainframe in this invention.

[0041] Figure 4 This is a three-dimensional structural diagram of the upper part of the main frame in this invention.

[0042] Figure 5 This is the three-dimensional structure of the gyroscopic propulsion device in this invention. Figure 1 (Front-view perspective)

[0043] Figure 6 This is the three-dimensional structure of the gyroscopic propulsion device in this invention. Figure 2 (Rear view)

[0044] Figure 7 This is a schematic diagram of the rotary propulsion device in this invention.

[0045] Figure 8 yes Figure 7 Left view,

[0046] Figure 9 yes Figure 7 Sectional view AA

[0047] Figure 10 This is the working principle of the invention. Figure 1 (Initial position)

[0048] Figure 11 This is the working principle of the invention. Figure 2 (Middle position A)

[0049] Figure 12This is the working principle of the invention. Figure 3 (Middle position B, replace the plug board to continue the stroke).

[0050] Figure 13 This is the working principle of the invention. Figure 4 (Send to the finish line)

[0051] Figure 14 This is a three-dimensional structural diagram of the main frame + propulsion frame from the front view in this invention.

[0052] Figure 15 This is a three-dimensional structural diagram of the main frame + propulsion frame from the rear view in this invention.

[0053] Figure 16 This is a three-dimensional schematic diagram of the main frame and the rotary propulsion device in operation in this invention. (The upper, lower, front, and rear supports have been removed from the diagram, showing the position of the anti-soil-rushing rotary bearing disc in operation.)

[0054] Figure 17 This is a schematic diagram of the overall structure of the device of the present invention.

[0055] Figure 18 This is the working state of the present invention when the splicing tube is fed in. Figure 1 ,

[0056] Figure 19 This is the working state of the present invention when the splicing tube is fed in. Figure 2 ,

[0057] Figure 20 This is the working state of the present invention when the splicing tube is fed in. Figure 3 ,

[0058] Figure 21 This is the working state of the present invention when the splicing tube is fed in. Figure 4 ,

[0059] Figure 22 This is a three-dimensional schematic diagram of the bottom support in this invention.

[0060] Figure 23 This is a schematic diagram of the rear support structure in this invention.

[0061] Figure 24 yes Figure 23 Left view,

[0062] Figure 25 This invention describes the working principle of the propulsion cylinder performing a two-stage progressive motion. Figure 1 ,

[0063] Figure 26 This invention describes the working principle of the propulsion cylinder performing a two-stage progressive motion. Figure 2 .

[0064] In the diagram: Ⅰ is the main tunnel, Ⅱ is the parallel tunnel, and Ⅲ is the connecting passage.

[0065] 1 is the upper support, 11 is the upper support cylinder, and 12 is the sleeve suspension guide rail.

[0066] 2 is the main frame, 21 is the base plate, 211 is the Y-axis track, 212 is the X-axis pipe feeding track, 2120 is the feeding position, 22 is the top plate, 23 is the sleeve support structure, 201 is the lower part of the main frame, and 202 is the upper part of the main frame.

[0067] 3 is the front support, and 31 is the front support cylinder.

[0068] 4 is the rotary propulsion device; 41 is the propulsion frame; 42 is the drive unit; 43 is the interchangeable bearing interface of the propulsion cylinder; 431 is the slot; 44 is the large gear ring; 441 is the transition sleeve; 45 is the large gear ring slewing bearing; 46 is the corner track surface; 47 is the pinion; 471 is the pinion cover.

[0069] 5 represents the bottom support, and 51 represents the bottom support cylinder.

[0070] 6 is the rear support, 61 is the rear support cylinder, 62 is the rear support cylinder connection position, 63 is the drive unit receiving slot, 64 is the propulsion cylinder mounting position, and 65 is the anti-soil-rushing support cylinder mounting position.

[0071] 7 is the anti-soil-rush slewing bearing disc, and 71 is the anti-soil-rush support cylinder.

[0072] 8 is the propulsion cylinder, 81 is the cylinder barrel, 811 is the central groove, 812 is the front groove, and 82 is the insert plate.

[0073] 9 is the connecting pipe, and 91 is the pipe position.

[0074] To clearly illustrate the working principle of this invention, a three-dimensional reference coordinate system of x, y, and z is established in the figure, where the x-axis represents the axial direction of the main tunnel, the y-axis represents the axial direction of the connecting passage, and the z-axis represents the height direction. Detailed Implementation

[0075] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0076] In the description of this invention, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, features defined with "first" and "second" may explicitly or implicitly include one or more of these features, used to distinguish and describe features, without any order or emphasis.

[0077] In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0078] like Figure 1-9 As shown: The technical solution adopted in this invention is as follows: It includes a main frame 2 and a rotary propulsion device 4. The rotary propulsion device 4 includes a cutting unit and a transition sleeve 441 (the cutting unit is not shown in the attached drawings). In this invention, the front end of the transition sleeve 441 is connected to the cutting unit through a first-stage connecting pipe (head pipe). Then, as the cutting feed reaches the position, the connection between the first-stage connecting pipe and the transition sleeve 441 is disassembled, leaving the cutting unit and the first-stage connecting pipe in the soil layer excavated in the connecting channel III. The rotary propulsion device 4 then returns to its original position, and a secondary connecting pipe (connecting pipe 9) is connected between the transition sleeve 441 and the rear end of the first-stage connecting pipe, and the above actions are repeated. Of course, the operation of the equipment of this invention cannot be achieved without electrical control and hydraulic supply. The electrical and hydraulic parts will not be described in detail in this case.

[0079] The following innovative aspects of this invention should be emphasized.

[0080] The main frame 2 is a frame structure, including four sets of columns in the z-direction formed by the coaxial connection of the cylinder sleeves of the upper support cylinder 11 and the bottom support cylinder 51, a bottom plate 21 at the bottom, and a top plate 22 at the top; a front support cylinder 31 is provided on the surface of the column of the main frame 2 facing the excavation direction of the connecting passage III; a rear support cylinder 61 is provided on the back of the main frame 2.

[0081] The upper support cylinder 11 is connected to the upper support 1, which has a slightly curved cross-section. The bottom of the upper support 1 is equipped with a sleeve suspension guide rail 12. The bottom support cylinder 51 is connected to the bottom support 5. The rear support cylinder 61 is connected to the rear support 6. The front support cylinder 31 is connected to the front support 3. The middle of the front support 3 has a space larger than the cross-sectional profile of the connecting passage III. The main purpose is to retain the excavation space at the front and reserve space for the installation of the waterproof structure at the tunnel entrance. Furthermore, the front support cylinder 31 can be designed as a retractable structure, reducing the overall width in the y-direction, facilitating the transportation and positioning of the machine within the tunnel, and its withdrawal after operation. This avoids the machine colliding with the tunnel entrance wall during x-direction movement. Figure 10-13 Interference occurs in the shaded areas on the right side of each figure.

[0082] After being supported, the upper support 1, bottom support 5, rear support 6, and front support 3 are connected to the inner surface of the main tunnel I for abutment. The center height of the equipment can be adjusted by adjusting the feed amount of the bottom and upper supports. After being fully supported, the equipment is constrained in four degrees of freedom (y, z) and y-rotation and z-rotation within the main tunnel. Each hydraulic cylinder is connected to the hydraulic station and the electrical control station. In this invention, the main frame 2 utilizes the cylinder liners of the upper and bottom supports as columns, forming a compact design suitable for applications in confined spaces. Of course, rollers are also installed at the bottom of the main frame to facilitate movement along the laid tracks in the main tunnel.

[0083] The base plate 21 and top plate 22 of the main frame 2 are provided with a y-axis guide rail 211 and an X-axis pipe feeding rail 212. The X-axis pipe feeding rail 212 is provided with a waiting position 2120; mainly to facilitate the continuous feeding of the connecting pipe 9 until it is delivered to the pipe feeding position 91.

[0084] The rotary propulsion device 4 includes a propulsion frame 41, a drive unit 42, a propulsion cylinder interchangeable bearing interface 43, a large gear ring 44, a small gear 47, and a propulsion cylinder 8. The propulsion frame 41 is in the shape of a vertical plate with a central hole. The four corners of the propulsion frame 41 are respectively provided with corner guide rail surfaces 46, which are slidably connected to the y-guide rail 211. This allows the propulsion frame 41 to reciprocate relative to the main frame 2 in the y-direction. The large gear ring 44 is movably connected to the front of the propulsion frame 41, i.e., the side facing the connecting channel III, through a large gear ring slewing bearing 45. The drive unit 42 includes at least two sets of drive motors, a reduction gear, and a small gear 47. The small gear 47 meshes with the large gear ring 44, and a small gear sleeve 471 is also provided on the outside of the small gear 47 to shield the small gear 47. The drive motor and reduction gear are fixed on the push frame 41 and drive the pinion 47 to rotate synchronously; the push cylinder 8 is located between the rear support 6 and the push frame 41, driving the push frame 41 to reciprocate; the cylinder barrel 81 of the push cylinder 8 is connected to the push frame 41 through the push cylinder interchangeable bearing interface 43.

[0085] The key feature of the rotary propulsion device 4 in this invention lies in the two-stage progressive motion of the propulsion cylinder, that is, the stroke of the propulsion frame 41 is multiplied by a single cylinder. Specifically, as follows... Figure 10-13 As shown in Figures 25-26: A central groove 811 is formed in the middle of the outer surface of the cylinder barrel 81 of the propulsion cylinder 8, and a front groove 812 is formed in the front. The interchangeable bearing interface 43 of the propulsion cylinder has a sliding hole that penetrates the propulsion frame 41, and a slot 431 is provided at the opening of the interchangeable bearing interface 43 facing the rear support 6. The cylinder barrel 81 of the propulsion cylinder 8 passes through the sliding hole and can slide freely along the axial direction. Let the distance between the front groove 812 and the central groove 811 be H. In the initial state, the central groove 811 is aligned with the aforementioned slot 431. After inserting the insert plate 82 into the slot 431, the connection between the propulsion frame 41 and the propulsion cylinder 8 is realized, as shown in Figures 25-26. Figure 10 At this point, a step-by-step advance is performed, pushing the hydraulic cylinder 8 through its full stroke until it reaches its limit position, as follows: Figure 11 Stop the machine, remove the insert plate, and reset the hydraulic cylinder 8. Figure 12 This aligns the front slot 812 with the slot 431, and then inserts the insert plate into the slot 431 for a secondary step, such as... Figure 13 The aforementioned technical measures achieve the effect of "extending the range" by changing the connection position of the cylinder 81, which increases the length of a single excavation stroke within a limited space. This increases the length of the connecting pipe 9, reduces the frequency of replacing the connecting pipe 9, significantly reduces the workload of operators, and improves work efficiency.

[0086] like Figure 14-22 As shown: The front edge of the main frame 2 facing the connecting channel III is provided with an X-shaped casing support structure 23 to support and constrain the casing (i.e., the connecting pipe 9). This prevents the casing from swaying or shaking during operation, or from tilting up at the tail end, or from retracting when the machine stops, ensuring the casing's jacking posture and improving the accuracy of the annular excavation.

[0087] During excavation, especially in areas with abundant groundwater, sealing the soil is essential. Therefore, this invention includes a sealing plate at the edge of the corresponding connecting passage III, with an anti-soil-rushing rotary support plate 7 on the outer surface of the sealing plate. A support plate is also provided at the rear of the anti-soil-rushing rotary support plate 7, and four anti-soil-rushing support cylinders 71 arranged in a cross pattern are located between the support plate and the rear support 6. The function is as follows: Under the action of the annular cutting unit, the soil will twist. Without the anti-soil-rushing rotary support plate 7, the torque generated by the soil will affect the support structure of the anti-soil-rushing support cylinders 71, leading to support failure.

[0088] It should be noted that the anti-soil-rush slewing bearing plate 7 is not directly connected to this equipment. It is part of the cutting unit that, along with the initial connecting pipe, annularly cuts the tunnel wall and enters the undisturbed soil. The release of water and soil pressure along the jacking direction, especially in water-rich strata, poses a significant threat to tunnel safety. Therefore, it is necessary to seal and protect the central soil and the tunnel segments that have been annularly cut and remain in place. By installing a sealing sleeve (i.e., the sealing plate mentioned earlier) and its cooperating anti-soil-rush slewing bearing plate 7, support plate, and anti-soil-rush support cylinder 71, the water and soil pressure ahead can be effectively resisted, ensuring safety within the initial tunnel during construction.

[0089] The four anti-soil-rush support cylinders 71 are arranged in a cross shape, with the cross shape offset by 15-20° relative to the z-axis. The radius of the outermost anti-soil-rush support cylinder 71 is 1-1.5 times that of the other three cylinders. The advantage is that when the connecting pipe 9 is inserted from the side, it must "pass through" the four cylinders located on the inner edge contour. These four cylinders would interfere with the connecting pipe 9 entering the center position from the side. Therefore, the four cylinders need to alternately move to make way. Using the aforementioned technical means, three of the cylinders can always maintain effective support for the support plate, maximizing the reliability of the seal.

[0090] Furthermore, it should be noted that the anti-soil-rushing support cylinders are not limited to a four-cylinder cross arrangement. Those skilled in the art can also modify it into a multi-cylinder (such as three, five, six, eight, etc.) arrangement based on the design concept of this invention. Such modification is an equivalent substitution for the technical measures in this invention.

[0091] A rear support cylinder connection position 62, adapted to the position of the rear support cylinder 61, is provided on the rear support 6 for connecting the piston rod end of the rear support cylinder connection position 62; for example... Figure 23-24 ,

[0092] A drive device receiving groove 63 adapted to the position of the drive device 42 is also provided on the rear support 6 for accommodating the motor or motor of the drive device 42.

[0093] A propulsion cylinder mounting position 64 adapted to the position of the propulsion cylinder 8 is also provided on the rear support 6 for receiving the outer end of the piston rod of the propulsion cylinder 8.

[0094] An anti-soil-rushing support cylinder mounting position 65 is also provided on the rear support 6 to match the position of the anti-soil-rushing support cylinder 71, for fixing the cylinder body of the anti-soil-rushing support cylinder 71.

[0095] The main frame 2 has a frame structure, which is divided into a lower part 201 and an upper part 202. The lower part 201 includes eight bottom support cylinders 51 that are fixedly and uprightly connected to the four corners of the base plate 21. The piston rods of the bottom support cylinders 51 are oriented downwards. The upper part 202 includes eight upper support cylinders 11 that are fixedly and uprightly connected to the four corners of the top plate 22. The piston rods of the upper support cylinders 11 are oriented upwards.

[0096] The bottom of the upper support cylinder 11 on the upper part 202 of the main frame and the top of the bottom support cylinder 51 on the lower part 201 of the main frame are fixedly connected by a connecting plate. The upper support cylinder 11 and the bottom support cylinder are located on the same z-axis.

[0097] A construction method for a horizontal full-rotation casing jacking device according to the present invention includes the following steps:

[0098] 1) Move the entire equipment to the excavation position of the connecting passage III in the main tunnel I;

[0099] 2) Adjust the upper, lower, front, and rear supports of the equipment to ensure that the drive mechanism axis of the cutting unit in the gyratory propulsion device is coaxial with the connecting channel III; lock the equipment position; connect the cutting unit to the transition sleeve of the gyratory propulsion device through the first-stage connecting pipe;

[0100] 3) Start the gyroscopic propulsion device and make it move in a straight line towards the direction of the connecting channel III; at the same time, the cutting unit performs a 360° gyroscopic motion under the action of the drive mechanism through the first-stage connecting pipe and / or the connecting pipe.

[0101] 4) When the gyratory propulsion device reaches the propulsion stroke, stop the machine, disassemble the first-stage connecting pipe and the transition sleeve, and then retract the gyratory propulsion device to the initial position; at this time, the cutting unit and the first-stage connecting pipe will be embedded and remain in the soil pre-excavated in the connecting passage III;

[0102] 5) The secondary connecting tube is fed into the waiting position 2120 between the tail end of the primary connecting tube and the transition sleeve, and the front end of the secondary connecting tube is connected to the tail end of the primary connecting tube and the rear end is connected to the transition sleeve 441.

[0103] 6) Repeat steps 1)-5); Continue advancing the connecting pipe 9 until the cutting of the soil and rock in the connecting passage III tunnel is completed in parallel tunnel II;

[0104] Among them, step 3) has a two-level progression.

[0105] In the first-stage progression, the central groove 811 on the cylinder barrel 81 of the propulsion cylinder 8 is connected to the slot 431 of the interchangeable bearing interface 43 of the propulsion cylinder on the propulsion frame 41 through a plug plate, so that the propulsion cylinder 8 can work to its full stroke.

[0106] Next, stop the machine, remove the insert plate, allow the propulsion cylinder 8 to retract and reset, connect the front groove 812 on the cylinder barrel 81 of the propulsion cylinder 8 to the slot 431 of the propulsion cylinder interchangeable bearing interface 43 on the propulsion frame 41 through the insert plate, start the machine, and work the propulsion cylinder 8 to its full stroke for the second time.

[0107] In step 3), after the cutting unit cuts the main tunnel I pipe wall, the connecting channel III port is formed, and the soil inside is sealed and protected based on the cut and separated circular tile-shaped pipe wall fragments.

[0108] Specifically, a sealing plate and a support plate are attached to the front end of the remaining pipe segment. A soil-prevention rotary support plate 7 is installed between the sealing plate and the support plate. The support plate is supported by a soil-prevention support cylinder 71. Of course, the shape of the sealing plate facing the remaining pipe segment needs to be compatible with the arc-shaped remaining pipe segment, and its outer diameter needs to be compatible with the inner diameter of the connecting pipe 9 to ensure relative movement and not interfere with the rotation of the subsequent connecting pipe 9.

[0109] The starting point for proposing this technical means is that when the annular cutting unit is operating, it will generate torque on the soil in the casing group composed of the connecting pipe 9, causing the cylindrical soil (i.e., the central soil) to have an overall twisting tendency. Adding the anti-sinking soil slewing bearing plate 7 can effectively "absorb" the torsional force of the central soil and prevent the support point of the anti-sinking soil support cylinder 71 from being damaged.

[0110] This invention is not limited to the above embodiments. Based on the technical solutions disclosed in this invention, those skilled in the art can make some substitutions and modifications to some of the technical features without creative effort, and all such substitutions and modifications are within the protection scope of this invention.

Claims

1. A horizontal full-rotation sleeve jacking device, comprising a main frame (2) and a rotary propulsion device (4), wherein the rotary propulsion device (4) comprises a cutting unit and a transition sleeve (441). Its features are, The main frame (2) is a frame structure, including four sets of columns in the z-direction formed by the coaxial connection of the cylinder sleeves of the upper support cylinder (11) and the bottom support cylinder (51), a bottom plate (21) at the bottom, and a top plate (22) at the top; a front support cylinder (31) is provided on the surface of the columns of the main frame (2) facing the excavation direction of the connecting passage (Ⅲ); a rear support cylinder (61) is provided on the back of the main frame (2). The upper support cylinder (11) is connected to an upper support (1) with a sloping cross section. The bottom of the upper support (1) is provided with a sleeve suspension guide rail (12). The bottom support cylinder (51) is connected to a bottom support (5). The rear support cylinder (61) is connected to a rear support (6). The front support cylinder (31) is connected to a front support (3). The front support (3) has a space in the middle that is larger than the cross-sectional profile of the connecting passage (Ⅲ). After the upper support (1), bottom support (5), rear support (6) and front support (3) are supported, they are connected to the inner surface of the main tunnel (Ⅰ). The bottom plate (21) and top plate (22) of the main frame (2) are provided with a y-guide rail (211) and an X-direction pipe delivery rail (212). The X-direction pipe delivery rail (212) is provided with a delivery position (2120). The rotary propulsion device (4) further includes a propulsion frame (41), a drive device (42), a repositionable bearing interface (43) for the propulsion cylinder, a large gear ring (44), a small gear (47), and a propulsion cylinder (8); the propulsion frame (41) is in the shape of a vertical plate and has a central hole. The four corners of the propulsion frame (41) are respectively provided with corner guide rail surfaces (46), and the corner guide rail surfaces (46) are slidably connected to the y-guide rail (211); the large gear ring (44) is movably connected to the front of the propulsion frame (41) through a large gear ring slewing bearing (45); the drive device (42) is a repositionable bearing interface (43) for the propulsion cylinder (8). The driving device (42) includes at least two sets of drive motors, a reduction gear and a pinion (47). The pinion (47) meshes with the large gear ring (44). The drive motor and the reduction gear are fixed on the push frame (41) and drive the pinion (47) to rotate synchronously. The push cylinder (8) is located between the rear support (6) and the push frame (41) and drives the push frame (41) to reciprocate. The cylinder barrel (81) of the push cylinder (8) is connected to the push frame (41) through the push cylinder interchangeable bearing interface (43). A central groove (811) is provided in the middle of the outer surface of the cylinder barrel (81) of the propulsion cylinder (8), and a front groove (812) is provided in the front. The interchangeable bearing interface (43) of the propulsion cylinder has a sliding hole that passes through the propulsion frame (41). The interchangeable bearing interface (43) of the propulsion cylinder has a slot (431) at the opening facing the rear support (6). After inserting the insert plate into the slot (431), the connection between the propulsion frame (41) and the propulsion cylinder (8) is realized.

2. The horizontal full-rotation sleeve jacking device according to claim 1, characterized in that, An X-shaped sleeve support structure (23) is provided at the front edge of the main frame (2) facing the communication channel (Ⅲ) to support the sleeve.

3. The horizontal full-rotation sleeve jacking device according to claim 1, characterized in that, A sealing plate is provided at the edge of the corresponding communication channel (Ⅲ), and a soil-proof slewing bearing plate (7) is provided on the outer surface of the sealing plate. A support plate is also provided at the rear of the soil-proof slewing bearing plate (7), and four soil-proof support cylinders (71) arranged in a cross shape are provided between the support plate and the rear support (6).

4. A horizontal full-rotation sleeve jacking device according to claim 3, characterized in that, The four anti-soil-rushing support cylinders (71) are arranged in a cross shape, with the cross shape deflected by 15-20° relative to the z-axis. The radius of the anti-soil-rushing support cylinder (71) at the farthest end is 1-1.5 times the radius of the other three cylinders.

5. A horizontal full-rotation sleeve jacking device according to claim 3, characterized in that, A rear support cylinder connection position (62) adapted to the position of the rear support cylinder (61) is provided on the rear support (6) for connecting the piston rod end of the rear support cylinder connection position (62); A drive device receiving groove (63) adapted to the position of the drive device (42) is also provided on the rear support (6) for accommodating the motor or motor of the drive device (42); A propulsion cylinder mounting position (64) adapted to the position of the propulsion cylinder (8) is also provided on the rear support (6) for receiving the outer end of the piston rod of the propulsion cylinder (8); An anti-soil support cylinder mounting position (65) adapted to the position of the anti-soil support cylinder (71) is also provided on the rear support (6) for fixing the cylinder body of the anti-soil support cylinder (71).

6. A horizontal full-rotation sleeve jacking device according to claim 1, characterized in that, The main frame (2) of the frame structure is configured as a lower part (201) and an upper part (202). The lower part (201) includes eight bottom support cylinders (51) fixedly and uprightly connected to the four corners of the base plate (21), and the piston rods of the bottom support cylinders (51) are oriented downwards. The upper part (202) includes eight upper support cylinders (11) fixedly and uprightly connected to the four corners of the top plate (22), and the piston rods of the upper support cylinders (11) are oriented upwards. The bottom of the upper support cylinder (11) of the upper part (202) of the main frame and the top of the bottom support cylinder (51) of the lower part (201) of the main frame are fixedly connected by a connecting plate.

7. The construction method of a horizontal full-rotation casing jacking equipment as described in claim 1, comprising the following steps: 1) Move the entire equipment to the excavation location of the connecting passage (III) in the main tunnel (Ⅰ); 2) Adjust the upper, lower, front, and rear supports of the equipment to ensure that the drive mechanism axis of the cutting unit in the gyratory propulsion device is coaxial with the connecting channel (Ⅲ); lock the equipment position; connect the cutting unit to the transition sleeve of the gyratory propulsion device through the first-stage connecting pipe; 3) Start the gyro propulsion device and make it move in a straight line towards the connecting channel (Ⅲ); at the same time, the cutting unit makes a 360° gyroscopic motion under the action of the drive mechanism through the first stage connecting pipe and / or connecting pipe. 4) When the gyratory propulsion device reaches the propulsion stroke, stop the machine, disassemble the first-stage connecting pipe and the transition sleeve, and then retract the gyratory propulsion device to the initial position; at this time, the cutting unit and the first-stage connecting pipe will be embedded and remain in the soil pre-excavated in the connecting passage (Ⅲ); 5) Insert the secondary connecting pipe from the side between the tail end of the primary connecting pipe and the transition sleeve, and connect the front end of the secondary connecting pipe to the tail end of the primary connecting pipe and the rear end to the transition sleeve. 6) Repeat steps 1)-5). Its characteristic is that step 3) has a two-stage progression. In the first-stage progressive motion, the central groove (811) on the cylinder barrel (81) of the propulsion cylinder (8) is connected to the slot (431) of the interchangeable bearing interface (43) of the propulsion cylinder on the propulsion frame (41) through a plug plate, and the propulsion cylinder (8) works to its full stroke. Next, stop the machine, remove the insert plate, and allow the propulsion cylinder (8) to retract and reset. Connect the front groove (812) on the cylinder barrel (81) of the propulsion cylinder (8) to the slot (431) of the propulsion cylinder interchangeable bearing interface (43) on the propulsion frame (41) through the insert plate. Start the machine and work the propulsion cylinder (8) to its full stroke for the second time.

8. The construction method of a horizontal full-rotation casing jacking device according to claim 7, characterized in that, In step 3), after the cutting unit cuts the main tunnel (Ⅰ) pipe wall, the connecting channel (Ⅲ) port is formed, and the soil inside is sealed and protected based on the cut and separated circular tile-shaped pipe wall fragments; Specifically, a sealing plate and a support plate are attached to the front end of the remaining pipe segment, and a soil-proof slewing bearing plate (7) is provided between the sealing plate and the support plate. The support plate is supported by a soil-proof support cylinder (71).

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