Split launching supporting device and launching construction method for extremely small launching well

Abstract

The present invention discloses a split launching supporting device and launching construction method applied to a very small launching well, which solves the problems of difficult construction and low work efficiency of launching devices of very small launching wells in the prior art. The present invention includes a main engine, a segment assembler and a screw conveyor. A first track and a second track are provided at the bottom of the launching well. A segment transfer platform or a slag bucket car is provided on the first track. One end of the segment transfer platform is connected to a second winch arranged inside the main engine, and the other end is connected to a first winch arranged outside the launching well. A lifting platform is provided on the second track. A slag discharge box is provided at the slag discharge port of the screw conveyor, and the slag discharge box is connected to the lifting platform. The segment transfer platform of the present invention cooperates with the first winch and the second winch to complete the 90° rotation of the segment and the transportation of the segment, reduce the segment transportation time and rotation time, and improve work efficiency and transportation flexibility.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel construction, and in particular to a split launching matching device and a launching construction method applied to a very small launching shaft. Background Art

[0002] In order to reduce the impact of tunnel construction on urban traffic, some tunnel lines will limit the size of the starting shaft during planning. In some special areas, the tunnel starting shaft will even be limited to an extremely small size, which increases the difficulty of construction. When the size of the tunnel starting shaft is extremely small, after the main machine of the tunnel boring machine is lowered into the shaft, the remaining space is not enough to accommodate a whole section of the supporting trailer, so the segment conveying device, segment lifting device and the supporting slag conveying device cannot be lowered into the shaft. Since the segment conveying device and segment lifting device cannot be lowered into the shaft, the segments have to be dragged by a winch and transported along the rail track to the assembly area during construction, and then the assembly machine is used to complete the rotation of the segments; this construction method takes a long time to transport the segments and will damage the segments. Since the supporting slag conveying device could not be lowered into the well, a slag bucket truck had to be used to directly receive the slag from the screw machine outlet during construction; and because of the structural space limitation of the main screw machine, a small-capacity slag bucket truck had to be used to discharge the slag during construction, resulting in multiple slag collection and transportation for each ring, and the tunnel boring machine also needed to be frequently stopped and excavated, which greatly increased the completion time of each ring. In addition, since the trailer could not be lowered into the well, the grouting control unit and grease barrel could not be lowered into the well, and had to be placed on the ground, and then rely on long-distance extension pipelines to complete grouting and grease injection, which increased the risk of slurry pipeline blockage and the failure of grease injection pressure to meet requirements due to large pipeline pressure loss.

[0003] Therefore, it is urgent to propose a split launching construction method and launching supporting equipment suitable for extremely small launching wells to solve the problems of segment transportation, slag transportation, grouting control unit and grease barrel lowering. Summary of the invention

[0004] In view of the deficiencies in the above-mentioned background technology, the present invention proposes a split launching supporting device and a launching construction method applied to a very small launching well, which solves the problems of difficult construction and low working efficiency of launching devices for very small launching wells in the prior art.

[0005] The technical solution of the present invention is achieved as follows: a split starting supporting device applied to an extremely small starting well, including a main engine, a segment assembler and a screw conveyor. A first track and a second track are provided at the bottom of the starting well. A segment transfer platform or a slag bucket car is provided on the first track. One end of the segment transfer platform is connected to a second winch arranged inside the main engine, and the other end is connected to a first winch arranged outside the starting well. A lifting platform is provided on the second track. A slag discharge box is provided at the slag discharge port of the screw conveyor, and the slag discharge box is connected to the lifting platform.

[0006] The segment transfer platform comprises a platform seat, a turntable is rotatably provided on the platform seat, a nylon support plate is provided on the turntable, and a first running wheel is provided at the lower part of the platform seat, and the first running wheel cooperates with the first track.

[0007] A rotating shaft is fixedly provided at the bottom of the turntable, and the rotating shaft is connected to the platform seat through a rotating bearing. A lock buckle is hinged on one side of the platform seat, and the lock buckle cooperates with the lock seat on the turntable; the nylon support plate is a strip plate, and the nylon support plate is fixed to the turntable by bolts.

[0008] The lifting platform includes a main frame, with a left bottom platform and a right bottom platform fixedly provided on both sides of the main frame, a grouting control unit provided on the left bottom platform, a grease barrel provided on the right bottom platform, a cross beam provided on the main frame, and a grease crane provided on the cross beam; a second running wheel is provided at the bottom of the main frame, and the second running wheel cooperates with the second track.

[0009] A second ear plate is provided at the front end of the main frame, and the second ear plate is hinged to the first ear plate arranged at the tail of the pipe segment assembling machine through a pull rod.

[0010] The main frame is provided with a hard pipe, which is connected to the main frame through a hanging piece. The front end of the hard pipe is provided with a hose, one end of the hose is connected to the hard pipe, and the other end is connected to the slag discharge box.

[0011] The slag discharge box includes a main box, a wear-resistant plate is provided on the inner wall of the main box, an improver injection hole is provided on the main box, a cover plate is provided on one side of the main box, and the cover plate is connected to the main box through a fastening clamp; the slag inlet end of the main box is connected to the screw conveyor through a first connecting flange, and the slag discharge end of the main box is connected to the hose through a second connecting flange.

[0012] The front end of the slag bucket car is connected to the second hoist, and the other end is connected to the first hoist. Under the action of the first hoist and the second hoist, the slag bucket car moves along the first track.

[0013] A launching construction method for a split launching supporting device applied to a very small launching well includes slag transportation and segment transportation, wherein the slag transportation includes the following steps: S1: connecting the front and rear ends of the slag bucket truck to the second winch and the first winch respectively;

[0014] S2: The second winch drives the slag bucket truck to the bottom of the hard pipe, and then the slag passes through the screw conveyor, the slag discharge box, the hose, and the hard pipe and falls into the slag bucket truck;

[0015] S3: When the dump truck is full of slag, the first winch drives the dump truck to exit the tunnel, completing one round of slag transportation;

[0016] S4: Repeat steps S2 to S3 until all the transportation of the slag is completed;

[0017] The transportation of pipe segments includes the following steps: B1: placing the pipe segments on the nylon support plate of the pipe segment transfer platform, and then locking the turntable with a lock buckle;

[0018] B2: Connect the front and rear ends of the segment transfer platform to the second winch and the first winch respectively;

[0019] B3: The second winch drives the segment transfer platform forward to the segment assembly area, then opens the lock, pushes the turntable to rotate the segment 90 degrees, and then locks the lock to complete the segment transportation;

[0020] B4: The segment assembly machine operates the segments and completes the segment assembly;

[0021] B5: After the segment assembly is completed, the first winch drives the segment transfer platform out of the tunnel to prepare for the transportation of the next segment;

[0022] B6: Repeat steps B1 to B5 until the corresponding segment transportation is completed.

[0023] The segment transfer platform of the present invention cooperates with the first winch and the second winch to complete the 90° rotation and segment transportation of the segment, reducing the segment transportation time and rotation time, and improving work efficiency and transportation flexibility; the slag discharge box cooperates with the hose and the hard pipe to extend the slag discharge port of the spiral machine, so as to meet the slag discharge needs of the large-volume slag bucket truck, reduce the number of slag transportation and the number of shutdowns and excavation, and improve construction efficiency; the grouting control unit and the grease barrel can be placed on the lifting platform, and the grouting control unit and the grease barrel can be lowered through the grease crane, shortening the double-liquid grouting and grease barrel starting pipelines, reducing the risk of double-liquid grouting pipeline blockage and the risk of excessive pressure loss in the grease pipeline, and improving the construction safety factor. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0025] Figure 1 It is a schematic diagram of the overall arrangement of the pipe segments when transporting the pipe segments according to the present invention.

[0026] Figure 2 It is a schematic diagram of the overall arrangement of the present invention when transporting slag.

[0027] Figure 3 This is the front view of the segment transfer platform of the present invention.

[0028] Figure 4 This is the AA cross-sectional view of the segment transfer platform of the present invention.

[0029] Figure 5 It is a cross-sectional view of the segment transfer platform BB of the present invention.

[0030] Figure 6 It is the front view of the slag discharge box of the present invention.

[0031] Figure 7 It is a left side view of the slag discharge box of the present invention.

[0032] Figure 8 It is the front view of the lifting platform of the present invention.

[0033] Fig. 9 It is a cross-sectional view of the lifting platform CC of the present invention. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] like Figure 1-5As shown, embodiment 1, a split launching supporting device applied to a very small launching shaft, includes a main machine 1, a segment assembler 2 and a screw conveyor 3, the segment assembler 2 and the screw conveyor 3 are both connected to the main machine 1, and the connection method is the same as that of the existing tunneling machine. A first track 17 and a second track 18 are provided at the bottom of the launching shaft, the first track 17 and the second track 18 are arranged parallel to the axial direction, and the first track is located on the inner side of the second track to ensure that the moving parts carried by the two will not interfere with each other. A segment transfer platform 13 or a slag bucket car 15 is provided on the first track 17. When transporting slag, the front end of the slag bucket car 15 is connected to the second winch 20 and the other end is connected to the first winch 14. Under the action of the first winch 14 and the second winch 20, the slag bucket car 15 moves along the first track 17, and the slag bucket car 15 is located on the first track 17. When transporting segments, the segment transfer platform is located on the first track to carry the segments 5. One end of the segment transfer platform 13 is connected to the second winch 20 disposed inside the main engine 1 through a steel wire rope, and the other end is connected to the first winch 14 disposed outside the starting shaft through a steel wire rope; the first winch and the second winch rotate to drive the segment transfer platform 13 or the slag bucket car 15 to move forward and backward along the first track. A lifting platform 11 is provided on the second track 18, and the lifting platform can be a self-driven platform, which can move forward and backward along the second track. A slag box 7 is provided at the slag outlet of the screw conveyor 3, and the slag box 7 is connected to the lifting platform 11. When the slag is transported, the slag excavated by the cutter head enters the slag box through the screw conveyor, and then falls into the slag bucket car 15 through the pipeline, and the slag is extended backward for transportation.

[0036] Preferably, the segment transfer platform 13 includes a platform seat 1301, on which a turntable 1302 is rotatably provided, and the turntable can rotate relative to the platform seat 1301. A nylon support plate 1303 is provided on the turntable 1302, and the nylon support plate 1303 is a strip plate, and the nylon support plate 1303 is fixed to the turntable 1302 by bolts. When the segment is transported, the segment is hoisted on the nylon support plate, which is used to position the segment and buffer the impact force on the segment, thereby protecting the segment. A first running wheel 1305 is provided at the lower part of the platform seat 1301, and the first running wheel 1305 cooperates with the first track 17 to facilitate the movement of the platform seat along the first track. A rotating shaft is fixedly provided at the bottom of the turntable 1302, and the rotating shaft is connected to the platform seat 1301 through a rotating bearing 1304, so as to realize the relative rotation of the turntable relative to the platform seat. A lock buckle 1306 is hinged on one side of the platform seat 1301, and the lock buckle 1306 cooperates with the lock seat on the turntable 1302; the lock buckle is engaged during the transportation of the segment, and when it is transported to the segment assembly machine area, the lock buckle is opened, the turntable is pushed to drive the segment to rotate 90 degrees, and then the lock buckle is locked, which facilitates the segment assembly machine to grab and assemble the segment, thereby realizing flexible transportation of the segment.

[0037] like Figure 6-9As shown, embodiment 2 is a split launching supporting device used for a very small launching well, wherein the lifting platform 11 includes a main frame 1106, which is a π-shaped frame. A left bottom platform 1101 and a right bottom platform 1104 are fixedly provided on both sides of the main frame 1106, respectively. A grouting control unit 19 is provided on the left bottom platform 1101, and the grouting control unit 19 is a control center for controlling whether grouting is performed or not. A grease barrel 16 is placed on the right bottom platform 1104, and a crossbeam 1105 is fixedly provided on the main frame 1106. A grease crane 12 is provided on the crossbeam 1105. The grease crane can adopt an electric hoist for lifting the grease barrel. A second running wheel 1102 is provided at the bottom of the main frame 1106, and the second running wheel 1102 cooperates with the second track 18. The lifting platform can adopt a self-driving platform, and the platform can move forward and backward along the second track. The front end of the main frame 1106 is provided with a second ear plate 1103, and the second ear plate 1103 is hinged to the first ear plate 3 arranged at the tail of the segment assembly machine 2 through the pull rod 6. The segment assembly machine can drag the lifting platform along the second track through the pull rod. The main frame 1106 is provided with a hard pipe 9, and the hard pipe 9 is connected to the main frame 1106 through a hanging member 10. The front end of the hard pipe 9 is provided with a hose 8, one end of the hose 8 is connected to the hard pipe 9, and the other end is connected to the slag box 7. When the slag is transported, the slag passes through the screw conveyor, the slag box, the hose, and the hard pipe and falls into the slag bucket car, and then the slag bucket car transports the slag to the outside of the cave.

[0038] Preferably, the slag discharge box 7 includes a main box 702, and a wear-resistant plate 703 is provided on the inner wall of the main box 702. The wear-resistant plate is fixed to the inside of the main box 702, which can reduce the wear of the slag on the slag. At least one improver injection hole 705 is provided on the main box 702, and the slag improver can be injected into the slag discharge box. A cover plate 707 is provided on one side of the main box 702, and the cover plate 707 is connected to the main box 702 by a fastening clamp 706. The internal situation of the main box can be directly observed by opening the cover plate, which is convenient for detection and maintenance. The main box 702 is a box-type structure with openings at both ends. The slag inlet end of the main box 702 is connected to the screw conveyor 3 through a first connecting flange 701, and the slag outlet end of the main box 702 is connected to the hose 8 through a second connecting flange 704. When transporting slag, the slag enters the screw conveyor and is then transported to the slag discharge box, and then leads to the hose and hard pipe, so that the slag can be extended backward, which can meet the needs of slag discharge using large-capacity slag bucket trucks.

[0039] The other structures are the same as those in Example 1.

[0040] Embodiment 3: A launching construction method of a split launching supporting device applied to a very small launching well, comprising transporting slag and transporting pipe segments, wherein the transporting slag comprises the following steps:

[0041] S1: Connect the front and rear ends of the dump truck to the second winch and the first winch respectively;

[0042] S2: The second winch drives the dump truck to move forward to the bottom of the hard pipe, and the slag outlet of the hard pipe is aligned with the dump truck to ensure that the slag can fall into the dump truck smoothly. Then the slag passes through the screw conveyor, the slag discharge box, the hose, and the hard pipe and falls into the dump truck;

[0043] S3: When the dump truck is full of slag, the first winch drives the dump truck to exit the tunnel, completing one round of slag transportation;

[0044] S4: Repeat steps S2 to S3 until all the transportation of the slag is completed;

[0045] Segment transportation includes the following steps:

[0046] B1: Place the segment on the nylon support plate of the segment transfer platform, and then lock the turntable with the lock;

[0047] B2: Connect the front and rear ends of the segment transfer platform to the second winch and the first winch respectively;

[0048] B3: The second winch drives the segment transfer platform forward to the segment assembly area, then opens the lock, pushes the turntable to rotate the segment 90 degrees, and then locks the lock to complete the segment transportation;

[0049] B4: The segment assembly machine operates the segments and completes the segment assembly;

[0050] B5: After the segment assembly is completed, the first winch drives the segment transfer platform out of the tunnel to prepare for the transportation of the next segment;

[0051] B6: Repeat steps B1 to B5 until the corresponding segment transportation is completed.

[0052] The other structures are the same as those in Example 2.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A split launching supporting device for a very small launching well, comprising a main engine (1), a segment assembling machine (2) and a screw conveyor (3), wherein a first track (17) and a second track (18) are provided at the bottom of the launching well, and characterized in that: A segment transfer platform (13) or a slag bucket car (15) is provided on the first track (17); when transporting segments, one end of the segment transfer platform (13) is connected to a second hoist (20) disposed inside the main engine (1), and the other end is connected to a first hoist (14) disposed outside the launch shaft; when transporting slag, the front and rear ends of the slag bucket car are connected to the second hoist and the first hoist respectively; a lifting platform (11) is provided on the second track (18), and a slag discharge box (7) is provided at the slag discharge port of the screw conveyor (3), and the slag discharge box (7) is connected to the lifting platform (11); The lifting platform (11) comprises a main frame (1106), a left bottom platform (1101) and a right bottom platform (1104) are fixedly provided on both sides of the main frame (1106), a grouting control unit (19) is provided on the left bottom platform (1101), a grease barrel (16) is provided on the right bottom platform (1104), a crossbeam (1105) is provided on the main frame (1106), and a grease crane (12) is provided on the crossbeam (1105); the grouting control unit and the grease barrel can be placed on the lifting platform, and the grouting control unit and the grease barrel can be lowered by the grease crane, thereby shortening the dual-liquid grouting and grease barrel starting pipelines, reducing the risk of double-liquid grouting pipeline blockage and the risk of excessive grease pipeline pressure loss; The main frame (1106) is provided with a hard pipe (9), the hard pipe (9) being connected to the main frame (1106) via a hanging member (10), a hose (8) being provided at the front end of the hard pipe (9), one end of the hose (8) being connected to the hard pipe (9), and the other end of the hose (8) being connected to the slag discharge box (7); when the slag is transported, the slag enters the screw conveyor and is then transported to the slag discharge box, and then to the hose and the hard pipe, so that the slag can be extended backwards, thereby meeting the requirements of using a large-volume slag bucket truck for slag discharge.

2. The split launching supporting device for use in a very small launching well according to claim 1 is characterized in that: The segment transfer platform (13) comprises a platform seat (1301), a turntable (1302) is rotatably provided on the platform seat (1301), a nylon support plate (1303) is provided on the turntable (1302), and a first running wheel (1305) is provided at the lower part of the platform seat (1301), and the first running wheel (1305) cooperates with the first track (17).

3. The split launching supporting device for use in a very small launching well according to claim 2 is characterized in that: A rotating shaft is fixedly provided at the bottom of the rotating disk (1302), and the rotating shaft is connected to the platform seat (1301) via a rotating bearing (1304); a lock buckle (1306) is hinged on one side of the platform seat (1301), and the lock buckle (1306) cooperates with a lock seat on the rotating disk (1302); the nylon support plate (1303) is a strip plate, and the nylon support plate (1303) is fixed to the rotating disk (1302) via bolts.

4. The split launching supporting device for use in a very small launching well according to any one of claims 1 to 3, characterized in that: A second running wheel (1102) is provided at the bottom of the main frame (1106), and the second running wheel (1102) cooperates with the second track (18).

5. The split launching supporting device for use in a very small launching well according to claim 4 is characterized in that: A second ear plate (1103) is provided at the front end of the main frame (1106), and the second ear plate (1103) is hingedly connected to a first ear plate (3) provided at the rear end of the segment assembly machine (2) via a pull rod (6).

6. The split launching supporting device for use in a very small launching well according to claim 1 or 5, characterized in that: The slag discharge box (7) comprises a main box (702), a wear-resistant plate (703) is provided on the inner wall of the main box (702), an improver injection hole (705) is provided on the main box (702), a cover plate (707) is provided on one side of the main box (702), and the cover plate (707) is connected to the main box (702) via a fastening clamp (706); the slag inlet end of the main box (702) is connected to the screw conveyor (3) via a first connecting flange (701), and the slag discharge end of the main box (702) is connected to the hose (8) via a second connecting flange (704).

7. The split launching supporting device for use in a very small launching well according to claim 6 is characterized in that: The front end of the slag bucket car (15) is connected to the second hoist (20), and the other end is connected to the first hoist (14). Under the action of the first hoist (14) and the second hoist (20), the slag bucket car (15) moves along the first track (17).

8. A launching construction method of a split launching supporting device applied to a very small launching well as claimed in claim 7, characterized in that: The method comprises the transportation of slag and the transportation of pipe segments, wherein the transportation of slag comprises the following steps: S1: connecting the front and rear ends of the slag bucket truck to the second winch and the first winch respectively; S2: The second winch drives the slag bucket truck to the bottom of the hard pipe, and then the slag falls into the slag bucket truck through the screw conveyor, slag discharge box, hose, and hard pipe; S3: When the dump truck is full of slag, the first winch drives the dump truck to exit the tunnel, completing one round of slag transportation; S4: Repeat steps S2 to S3 until all the transportation of the slag is completed; The transportation of pipe segments includes the following steps: B1: placing the pipe segments on the nylon support plate of the pipe segment transfer platform, and then locking the turntable with a lock buckle; B2: Connect the front and rear ends of the segment transfer platform to the second winch and the first winch respectively; B3: The second winch drives the segment transfer platform forward to the segment assembly area, then opens the lock, pushes the turntable to rotate the segment 90 degrees, and then locks the lock to complete the segment transportation; B4: The segment assembly machine operates the segments and completes the segment assembly; B5: After the segment assembly is completed, the first winch drives the segment transfer platform out of the tunnel to prepare for the transportation of the next segment; B6: Repeat steps B1 to B5 until the corresponding segment transportation is completed.

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