Shield tunnel construction deviation prevention structure

Abstract

The invention provides a shield tunnel construction anti-deviation structure which comprises a shield tunneling machine, the axial side of the shield tunneling machine is connected with a pipe piece, an adjusting mechanism is arranged between the shield tunneling machine and the pipe piece, and the adjusting mechanism is suitable for driving the shield tunneling machine to move in the radial direction of the pipe piece; a positioning groove is formed in the side, facing the duct piece, of the shield tunneling machine, a protection opening communicating with the positioning groove is formed in the radial outer side of the shield tunneling machine, and the protection opening can be opened and closed. According to the anti-deviation structure for shield tunnel construction, through the arrangement mode that the induction mechanism and the adjusting mechanism are matched, by means of an angle sensor and an angle induction plate, the angle deviation of a shield tunneling machine can be conveniently and rapidly induced, the whole shield tunneling machine can be conveniently deflected through the adjusting mechanism, and the posture of the whole shield tunneling machine can be conveniently adjusted; the shield tunneling machine can move in a small range, abrasion of the cutter head is reduced, and the service life of the shield tunneling machine is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of shield tunnel construction, and in particular to a shield tunnel construction anti-deviation structure. Background Art

[0002] During the construction of shield tunnels, due to the influence of geological conditions, construction equipment, operating technology and other factors, the shield machine is prone to deviation. The deviation of the shield will not only affect the construction quality of the tunnel, but may also have an adverse impact on the surrounding environment. Therefore, establishing an effective anti-deviation structure is crucial to ensure the safety and quality of tunnel construction. For example, application No. 201810886616.1 discloses a control method for a shield propulsion system for resisting eccentric loading. The circular partition on the system is fixedly connected to the shield body, and the cutterhead cuts the rock and soil and transports it out through a screw conveyor. The right end of the hydraulic jack is supported on the pipe segment through the support shoe, and the reaction force on the pipe segment pushes the entire shield forward. All hydraulic cylinders in the propulsion system are evenly arranged. The above-mentioned shield propulsion system control method calculates the arc angle θ and the azimuth angle φ according to the geomechanical parameters during shield excavation, thereby controlling the start or stop of the hydraulic cylinder group arranged in a circular, equidistant and continuous manner in the propulsion system. The above-mentioned method solves the eccentric loading problem of shield excavation by adjusting the distribution of hydraulic cylinders in real time.

[0003] However, if the small shield machine deviates in direction, it is necessary to adjust the direction of the small shield machine in the construction tunnel. The existing correction system uses the adjustment of the cutter head's posture to move the shield machine in a small range. During the process, the rollers on the cutter head are greatly worn, which affects the service life of the shield machine.

[0004] Therefore, in order to solve the above problems, the present invention proposes a shield tunnel construction anti-deviation structure that can control the overall posture adjustment of the shield machine and reduce the wear of the rollers on the cutterhead. Summary of the invention

[0005] In order to solve the technical problems existing in the posture adjustment of the above-mentioned existing small shield machines, the present invention provides a shield tunnel construction anti-deviation structure.

[0006] According to one object of the present invention, the present invention provides a shield tunnel construction anti-deviation structure, comprising a shield machine, wherein one axial side of the shield machine is connected to a pipe segment, and an adjustment mechanism is provided between the shield machine and the pipe segment, wherein the adjustment mechanism is suitable for driving the shield machine to move in the radial direction of the pipe segment;

[0007] The shield machine is provided with a positioning groove on one side facing the pipe segment, and a protective opening connected to the positioning groove is provided on the radial outer side of the shield machine, and the protective opening is an openable and closable protective opening. A matching angle sensor and an angle sensing plate are installed between the shield machine and the pipe segment, and the angle sensor and the angle sensing plate are both located on the inner side of the positioning groove, and the angle sensor and the adjustment mechanism are electrically connected.

[0008] Preferably, a fixing frame is provided on one side of the shield machine close to the pipe segment;

[0009] The adjustment mechanism includes a driving member, an eccentric disk and a rotating column which are connected in sequence along the axial direction of the pipe segment. The driving member is installed on the inner side of the pipe segment. An eccentric disk is installed on the output end of the driving member. The driving member is configured to drive the eccentric disk to rotate around the axis of the output end of the driving member. The rotating column is arranged on a side of the eccentric disk away from the driving member, and the rotating column is movably connected to the fixed frame.

[0010] Preferably, the adjustment mechanism includes a plurality of balls, which are arranged in a ring-shaped row and embedded between the eccentric disk and the fixed frame. The eccentric disk and the fixed frame are suitable for radial movement through the balls. The fixed frame is provided with an embedding groove, and the end of the rotating column facing away from the eccentric disk is clamped in the embedding groove.

[0011] Preferably, the shield tunnel construction anti-deviation structure further includes a protection component, the protection component is connected to the protection opening for opening and closing, and the protection component includes:

[0012] A protective plate, wherein a slot is provided on the inner side of the protective opening, and the protective plate slides on the inner side of the slot;

[0013] A rubber strip is fixed to one end of the protective plate, and a side of the pipe segment facing the shield machine is in contact with the rubber strip.

[0014] Preferably, the protection component further comprises:

[0015] A compression spring, the compression spring is connected between the clamping slot and the protection plate, and the compression spring is configured to push the protection plate toward the pipe segment;

[0016] A limit rod is fixed to the other end of the protective plate, the compression spring is sleeved on the inner side of the limit rod, and the inner wall of the slot is provided with a slot hole slidably connected to the limit rod.

[0017] Preferably, a limiting block is provided on the side of the protective plate away from the positioning groove, and a positioning assembly is provided on the positioning groove above the protective plate, and the positioning assembly is suitable for constraining the limiting block when the protective plate closes the protective opening.

[0018] Preferably, the rotating grooves are respectively opened on both sides of the inner wall of the positioning groove, and the positioning assembly includes a positioning rod, the ends of the positioning rod respectively correspond to the rotating grooves one by one, the ends of the positioning rod are rotatably connected to the inner side of the rotating groove, and a protrusion is provided on the positioning rod, and the limit block is clamped with the protrusion on one side of the length direction of the slot.

[0019] Preferably, the shield machine includes a cutter head, a front shield, a middle shield and a tail shield connected in sequence along the axial direction, the tail shield is connected to the pipe segment, the positioning groove is opened at the top of the tail shield, the angle sensor is connected to the pipe segment, the angle sensing plate is fixed to the inner wall of the positioning groove on the side opposite to the pipe segment, and the angle sensor and the angle sensing plate are arranged opposite to each other.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The shield tunnel construction anti-deviation structure, through the setting mode of coordinating the sensing mechanism and the adjusting mechanism, utilizes the angle sensor and the angle sensing plate, so as to quickly sense the angle deviation of the shield machine, facilitate the adjustment mechanism to deflect the entire shield machine, facilitate the posture adjustment of the entire shield machine, enable the shield machine to move in a small range, reduce the wear of the cutter head, and increase the service life of the shield machine.

[0022] The present invention is further described below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the connection between the positioning groove, the angle sensing plate and the protective assembly of the present invention;

[0025] Figure 3 For the present invention Figure 1 A schematic diagram of the partially enlarged structure at center A;

[0026] Figure 4 It is a schematic diagram of the connection between the pipe segment, the adjustment mechanism and the shield machine of the present invention;

[0027] Figure 5 For the present invention Figure 4 A schematic diagram of the partially enlarged structure at B in the middle;

[0028] Figure 6It is a schematic diagram of the connection between the eccentric disk and the rotating column from one viewing angle of the present invention.

[0029] In the figure: 1. shield machine; 11. cutterhead; 12. front shield; 13. middle shield; 14. tail shield; 2. pipe segment; 3. sensing mechanism; 31. positioning groove; 32. angle sensing plate; 33. protection component; 331. slot; 332. protection plate; 333. rubber strip; 334. compression spring; 335. limit rod; 34. angle sensor; 35. positioning component; 351. rotating groove; 352. positioning rod; 353. raised part; 36. limit block; 4. fixing frame; 5. adjustment mechanism; 51. bearing column; 52. driving member; 53. rotating shaft; 54. connecting rod; 55. rotating component; 551. eccentric disk; 552. ball; 553. rotating column; 56. embedded groove. DETAILED DESCRIPTION

[0030] The following description is used to fully explain the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0031] See also Figure 1-5 The present invention provides a technical solution: a shield tunnel construction anti-deviation structure, comprising: a shield machine 1, the shield machine 1 is a small shield structure, one end of the shield machine 1 is connected to a pipe segment 2, so that the shield machine 1 can move in the inner cavity of the pipe segment 2, the shield machine 1 comprises a cutter head 11, a front shield 12, a middle shield 13 and a tail shield 14 connected in sequence along the axial direction, the cutter head 11 is arranged at the end away from the pipe segment 2, the front shield 12 is installed at one end of the cutter head 11, the middle shield 13 is installed at one end of the front shield 12, the tail shield 14 is installed at one end of the middle shield 13, and the tail shield 14 is installed at one end of the pipe segment 2, through the rotation of the cutter head 11, the roller can excavate the inner cavity of the tunnel, and the front shield 12, the middle shield 13 and the tail shield 14 can support the tunnel wall;

[0032] For further information, see Figure 2-5A sensing mechanism 3 is provided at the top of one end of the shield machine 1, and the sensing mechanism 3 includes: a positioning groove 31, an angle sensing plate 32, a protective component 33, an angle sensor 34, a positioning component 35 and a limit block 36. The positioning groove 31 is opened at the top of the shield machine 1, and a protective opening connected to the positioning groove 31 is opened on the radial outer side of the shield machine 1. Specifically, the positioning groove 31 is opened at the top of the tail shield 14, the angle sensing plate 32 is fixed to one end of the inner wall of the positioning groove 31, the angle sensor 34 is arranged opposite to the angle sensing plate 32, and the angle sensor 34 is fixed to one end of the pipe segment 2. The plate 32 is provided to facilitate angle sensing between the shield machine 1 and the segment 2, and to facilitate sensing of the angle deviation direction of the shield machine 1, wherein the angle sensor 34 is measured based on the photoelectric effect, wherein the angle sensing plate 32 is a plate-shaped member for reflecting light signals, the protective component 33 is used to close the protective opening at the top of the positioning groove 31, the positioning component 35 is provided at one end of the inner cavity of the positioning groove 31, and the limit block 36 is provided at one end of the protective component 33. Through the protective component 33, it is convenient to reduce the soil from entering the inner cavity of the positioning groove 31, and through the provision of the positioning component 35 and the limit block 36, the stability of the position of the protective component 33 is improved;

[0033] Specifically, the protection assembly 33 includes: a card slot 331, a protection plate 332, a rubber strip 333, a compression spring 334 and a limiting rod 335. The card slot 331 is opened at the top of the positioning slot 31, the protection plate 332 slides horizontally in the inner cavity of the card slot 331, and the rubber strip 333 is fixed to one end of the protection plate 332. The rubber strip 333 fits with one end of the pipe segment 2. Through the sliding of the protection plate 332, the rubber strip 333 can fit closely with one end of the pipe segment 2, thereby reducing the soil in the positioning slot 3 1, the compression spring 334 is fixed between the card slot 331 and the protective plate 332, the limiting rod 335 is fixed to the other end of the protective plate 332, the compression spring 334 is sleeved on the outer side of the limiting rod 335, the inner wall of the card slot 331 is provided with a slot hole slidably connected to the limiting rod 335, the limiting rod 335 is used to improve the stability of the compression spring 334, and the elasticity of the compression spring 334 is used to facilitate the protective plate 332 to stably abut against one end of the pipe segment 2, thereby improving the stability of the position of the protective plate 332;

[0034] Specifically, the positioning assembly 35 is arranged above the protective plate 332, and the limit block 36 is fixed to the upper surface of the protective plate 332. The positioning assembly 35 includes: a plurality of rotation grooves 351, a positioning rod 352 and a plurality of protrusions 353. The plurality of rotation grooves 351 are respectively opened on both sides of the inner wall of the positioning groove 31, and the two ends of the positioning rod 352 are respectively rotatably connected with the inner cavity of the plurality of rotation grooves 351. The plurality of protrusions 353 are respectively arranged at the two ends of the positioning rod 352. By clamping the positioning rod 352 and the inner cavity of the limit block 36, the stability of the position of the protective plate 332 can be improved again. By pushing the positioning rod 352, the clamping of the limit block 36 can be released, and the protective plate 332 can be pushed, so that it is convenient to clean the inner cavity of the positioning groove 31.

[0035] For further information, see Figure 4 and 6 One end of the tail shield 14 is fixedly connected to a fixing frame 4, an adjustment mechanism 5 is provided between the shield machine 1 and the segment 2, the adjustment mechanism 5 is suitable for driving the shield machine 1 to move in the radial direction of the segment 2, the angle sensor 34 and the adjustment mechanism 5 are electrically connected, so that the adjustment mechanism 5 can adjust the relative position between the shield machine 1 and the segment 2 according to the data monitored by the angle sensor 34, the adjustment mechanism 5 includes: a bearing column 51, a driving member 52, a rotating shaft 53, a connecting rod 54, a rotating assembly 55 and an embedded groove 56, the bearing column 51 is fixed to The inner wall of the pipe segment 2, the driving member 52 is fixedly inserted in the middle of the bearing column 51, the driving member 52 is electrically connected to the external power supply through an external switch, the rotating shaft 53 is transmission-connected to the output end of the driving member 52, the connecting rod 54 is fixed to one end of the inner wall of the pipe segment 2, the rotating shaft 53 is rotationally inserted and connected with the middle of the connecting rod 54 through a bearing, the rotating assembly 55 is arranged in the middle of the rotating shaft 53, and the embedded groove 56 is opened at the top of the fixed frame 4. The driving member 52 is a high-power driving motor. Through the drive of the driving member 52, the rotating shaft 53 can drive the rotating assembly 55 to rotate;

[0036] Specifically, the rotating assembly 55 includes: an eccentric disk 551, multiple balls 552 and a rotating column 553. The eccentric disk 551 is fixed to one end of the rotating shaft 53. Multiple balls 552 are rollingly embedded in a ring array on one side of the eccentric disk 551. The balls 552 are rollingly connected to the outer wall of the fixing frame 4 to improve the rolling stability between the balls 552 and the fixing frame 4. One end of the rotating column 553 is a spherical structure. The rotating column 553 is fixed to one end of the eccentric disk 551. The rotating column 553 is clamped in the inner cavity of the embedding groove 56. Through the setting of the rotating column 553, the eccentric disk 551 can drive the tail shield 14 to deflect at an angle through the fixing frame 4, so that the angle sensor 34 can deflect to a suitable angle, so that the deflection of the entire shield machine 1 is convenient and stable, and the posture adjustment of the shield machine 1 is convenient, which is convenient to reduce the wear of the roller on the cutter head 11 and improve the service life of the shield machine 1.

[0037] The embodiments described above are only used to illustrate the technical ideas and features of the present invention, and their purpose is to enable technicians in this field to understand the contents of the present invention and implement them accordingly. The patent scope of the present invention cannot be limited only by this embodiment, that is, any equivalent changes or modifications made according to the spirit disclosed by the present invention still fall within the patent scope of the present invention.

Claims

1. A shield tunnel construction anti-deviation structure, comprising a shield machine (1), characterized in that: A segment (2) is connected to one axial side of the shield machine (1), an adjustment mechanism (5) is provided between the shield machine (1) and the segment (2), and the adjustment mechanism (5) is suitable for driving the shield machine (1) to move in the radial direction of the segment (2); The shield machine (1) is provided with a positioning groove (31) on one side facing the pipe segment (2); a matching angle sensor (34) and an angle sensing plate (32) are installed between the shield machine (1) and the pipe segment (2); the angle sensor (34) and the angle sensing plate (32) are both located on the inner side of the positioning groove (31); the angle sensor (34) and the adjustment mechanism (5) are electrically connected; and a protective opening connected to the positioning groove (31) is provided on the radial outer side of the shield machine (1); the protective opening is an openable and closable protective opening.

2. A shield tunnel construction anti-deviation structure according to claim 1, characterized in that: A fixing frame (4) is provided on one side of the shield machine (1) close to the pipe segment (2); The adjustment mechanism (5) comprises a driving member (52), an eccentric disk (551) and a rotating column (553) which are connected in sequence along the axial direction of the tube segment (2); the driving member (52) is mounted on the inner side of the tube segment (2); an eccentric disk (551) is mounted on the output end of the driving member (52); the driving member (52) is configured to drive the eccentric disk (551) to rotate around the axis of the output end of the driving member (52); the rotating column (553) is disposed on a side of the eccentric disk (551) away from the driving member (52); and the rotating column (553) is movably connected to the fixing frame (4).

3. A shield tunnel construction anti-deviation structure according to claim 2, characterized in that: The adjustment mechanism (5) comprises a plurality of balls (552), the balls (552) being arranged in a circular array and embedded between the eccentric disk (551) and the fixing frame (4), the eccentric disk (551) and the fixing frame (4) being adapted to move in a radial direction through the balls (552), the fixing frame (4) being provided with an embedding groove (56), and one end of the rotating column (553) facing away from the eccentric disk (551) being clamped in the embedding groove (56).

4. The shield tunnel construction anti-deviation structure according to claim 1, characterized in that: It also includes a protection component (33), the protection component (33) is connected to the protection opening for opening and closing, and the protection component (33) includes: A protection plate (332), wherein a slot (331) is provided on the inner side of the protection opening, and the protection plate (332) slides on the inner side of the slot (331); A rubber strip (333), wherein the rubber strip (333) is fixed to one end of the protective plate (332), and a side of the pipe segment (2) facing the shield machine (1) is in contact with the rubber strip (333).

5. The shield tunnel construction anti-deviation structure according to claim 4, characterized in that: The protection component (33) further comprises: a compression spring (334), the compression spring (334) being connected between the clamping slot (331) and the protection plate (332), the compression spring (334) being configured to push the protection plate (332) toward the tube segment (2); A limiting rod (335) is fixed to the other end of the protective plate (332), the compression spring (334) is sleeved on the inner side of the limiting rod (335), and the inner wall of the clamping slot (331) is provided with a slot hole slidably connected to the limiting rod (335).

6. The shield tunnel construction anti-deviation structure according to claim 4, characterized in that: A limiting block (36) is arranged on a side of the protective plate (332) facing away from the positioning groove (31); a positioning assembly (35) is arranged above the positioning groove (31) and is suitable for constraining the limiting block (36) when the protective plate (332) closes the protective opening.

7. The shield tunnel construction anti-deviation structure according to claim 6, characterized in that: The rotating grooves (351) are respectively provided on both sides of the inner wall of the positioning groove (31); the positioning assembly (35) comprises a positioning rod (352); the ends of the positioning rod (352) respectively correspond to the rotating grooves (351) one by one; the ends of the positioning rod (352) are rotatably connected to the inner side of the rotating groove (351); a protrusion (353) is provided on the positioning rod (352); and the limiting block (36) is engaged with the protrusion (353) on one side of the length direction of the slot (331).

8. The shield tunnel construction anti-deviation structure according to claim 1, characterized in that: The shield machine (1) comprises a cutterhead (11), a front shield (12), a middle shield (13) and a tail shield (14) which are connected in sequence along an axial direction; the tail shield (14) is connected to the pipe segment (2); the positioning groove (31) is provided at the top of the tail shield (14); the angle sensor (34) is connected to the pipe segment (2); the angle sensing plate (32) is fixed to an inner wall of the positioning groove (31) on a side opposite to the pipe segment (2); and the angle sensor (34) and the angle sensing plate (32) are arranged opposite to each other.

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