A shield posture measurement device inside a steel sleeve

Abstract

The present invention discloses a device for measuring the posture of a shield inside a steel sleeve, comprising a plurality of measuring blocks arranged on the outside of one end of the steel sleeve, wherein the measuring blocks are provided with measuring contacts, and the measuring contacts are provided with pressure sensors, and the plurality of pressure sensors are electrically connected to a controller; the plurality of measuring blocks are connected to each other by support rings, and the device for measuring the posture of a shield inside a steel sleeve has a protective correction mechanism provided between the support ring and the fixed plate, which can both connect the tunnel portal and the steel sleeve and make the tunnel portal and the steel sleeve independent of each other, and when the shield enters the tunnel portal, the vibration force generated by its excavation is reduced by the protective correction mechanism, thereby ensuring the stability of the steel sleeve, and at the same time, the protective correction mechanism cooperates with the measuring blocks to measure the posture of the shield entering the steel sleeve while correcting its deviation, thereby ensuring the stability of the shield entering the steel sleeve.

Description

Technical Field

[0001] The invention relates to the technical field of civil engineering equipment, in particular to a shield posture measuring device in a steel sleeve. Background Art

[0002] The purpose of the steel sleeve shield tunneling system is to ensure a watertight tunnel portal seal and build up earth pressure within the soil bin during tunneling or receiving operations in water-rich sand layers or complex surrounding environments. Therefore, relying solely on the portal rubber curtain and portal pressure plate to seal the portal is insufficient. When the shield tunnel enters the tunnel, a special portal sealing method is often employed: an 800mm long steel sleeve is added to the portal portal. Its inner diameter is the same as the reserved opening in the end wall, at 6500mm. The steel sleeve is integrated with the shaft wall, and a sealing device is installed at the rear end of the steel sleeve, with two wire brush seals installed on the sleeve body.

[0003] And according to the existing patent application number: CN202010641109.9, a device for measuring the attitude of a shield machine in a steel sleeve and a method for measuring the attitude of the shield machine are disclosed. In this device, the shield machine needs to be moved into the inside of the steel sleeve before the attitude of the shield machine is measured. However, in actual operation, the existing shield machine first enters the inside of the steel sleeve through the tunnel portal before entering the cylinder sleeve, and the existing steel sleeve and the steel ring at the tunnel portal are sealed with each other. As a result, when the shield machine enters the tunnel portal, the shield machine generates a large vibration force during excavation, causing the steel ring at the tunnel portal to shake, and further causing the steel sleeve connected to the steel ring to deviate. This not only affects the accurate detection of the shield machine's entry attitude, but also fails to ensure the sealing of the connection between the steel sleeve and the steel ring at the tunnel portal. For this reason, we propose a device for measuring the attitude of a shield machine in a steel sleeve. Summary of the Invention

[0004] The purpose of the present invention is to provide a shield posture measurement device in a steel sleeve to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a shield posture measurement device in a steel sleeve, comprising a plurality of measurement blocks arranged outside one end of the steel sleeve, the measurement blocks being provided with measurement contacts, and the measurement contacts being provided with pressure sensors, the plurality of pressure sensors being electrically connected to a controller;

[0006] A plurality of the measuring blocks are connected to each other with support rings, and the support rings are fixed to the tunnel gate steel ring by fastening bolts;

[0007] A protection and correction mechanism is provided on one side of the support ring, and the protection and correction mechanism cooperates with multiple pressure sensors to correct the shield when the shield exits the tunnel;

[0008] One end of the protection and correction mechanism is connected to a fixed disk, and the fixed disk is hollow inside. A fixed bracket is provided at the bottom of the fixed disk, and the fixed disk is fixedly installed on the outside of the tunnel door through the fixed bracket. A deformable sealing sleeve is provided between the fixed disk and the support ring.

[0009] One end of the fixed disk is connected to the steel sleeve through a plurality of connecting pieces.

[0010] Preferably, the protection and correction mechanism includes a plurality of fixing seats fixedly mounted on the fixing plate, and the plurality of fixing seats are distributed on the fixing plate in a ring shape;

[0011] The fixing base is provided with a first guide frame, and the two ends of the first guide frame are respectively fixedly connected to the first support shaft and the second support shaft, the first support shaft and the second support shaft are both rotatably connected to the fixing base, and the end of the first support shaft located outside the fixing base is fixedly connected to the rotating gear, and the fixing plate is provided with a driving mechanism for driving the multiple rotating gears;

[0012] An angle sensor is installed on the first supporting shaft;

[0013] A first guide shaft is fixedly connected to the interior of the first guide frame, and a connecting sleeve is rotatably sleeved on the outer side of the first guide shaft, and a connecting rod is slidably passed through the end of the connecting sleeve away from the first guide frame, and a telescopic positioning member is provided between the connecting rod and the connecting sleeve;

[0014] The end of the connecting rod away from the connecting sleeve is connected to a synchronous rotating part, and the protective correction mechanism is provided to achieve the protection and guidance measurement of the shield and the correction of its deviation at the same time.

[0015] Preferably, the driving mechanism comprises a movable ring sleeved on the outside of a fixed plate, and the fixed plate is provided with two telescopic cylinders for supporting and pushing the movable ring;

[0016] Multiple drive motors are installed at equal distances on the moving ring, and the output end of the drive motor is fixedly connected to the drive gear through a coupling. The fixed plate is provided with grooves for moving the multiple drive gears. The drive gear is meshed and connected with the rotating gear, and the driving mechanism is provided to drive the rotating gear.

[0017] Preferably, the telescopic positioning member includes a buffer spring having one end fixedly connected to the inner wall of the connecting sleeve, and the other end of the buffer spring is fixedly connected to a positioning block, and the positioning block is fixedly connected to the connecting rod, a through hole is provided between the connecting rod and the positioning block, and the positioning block is provided with two movable grooves communicating with the through hole, the movable groove is slidably connected to a locking block, and the ends of the two locking blocks close to each other are wedge-shaped ends;

[0018] A reset member for resetting the locking block is provided inside the movable groove;

[0019] A pushing block is slidably connected between the two wedge-shaped ends, and an electric push rod for driving the pushing block is installed at the internal through hole of the connecting rod. The mutual positioning between the connecting rod and the connecting sleeve is achieved through the provided telescopic positioning piece.

[0020] Preferably, the reset member includes a moving block fixedly connected to one end of the pushing block away from the locking block, and a reset spring is fixedly connected to one side of the moving block, and one end of the reset spring is fixedly connected to the inner wall of the moving groove, so that the pushing block can be reset inside the moving groove through the reset member.

[0021] Preferably, the synchronous rotating member includes a second guide shaft passing through one end of the connecting rod, and the second guide shaft is rotatably connected to the connecting rod, and the two ends of the second guide shaft are fixedly connected to the second guide frame, and the two sides of the outside of the second guide frame are respectively rotatably connected to the fixed plate through the connecting shaft, and the fixed plate is fixedly installed on the support ring, and the synchronous rotating member is provided to achieve the effect of synchronous rotation between the connecting rod and the connecting sleeve.

[0022] Preferably, the inner ring of the fixed disk is provided with a receiving groove, and a pressure shell is installed at the receiving groove, and the interior of the pressure shell is filled with gas;

[0023] The pressure shell is connected to two groups of air ducts, and one end of the two groups of air ducts passes through the fixed plate and is connected to a booster. The booster is connected to the steel sleeve. Through the pressure shell, the pressure inside the fixed plate is discharged while ensuring the stability of the steel sleeve connection.

[0024] Preferably, the pressurizing member includes two pressing plates arranged on the outside of the steel sleeve, and the two pressing plates are respectively located on the outside of the connecting ears of the upper half steel sleeve and the lower half steel sleeve;

[0025] The two pressing plates are fixedly connected to a push rod on one side away from each other, and a push plug is fixedly connected to the push rod. A boost sleeve is sleeved on the outer side of the push plug, and the push plug is cooperatively connected with the boost sleeve.

[0026] A connecting spring connected to the push plug is installed inside the boost sleeve, and one end of the air guide tube is connected to the boost sleeve;

[0027] A support member for supporting the boost sleeve is installed on the fixed plate, and the boost member is provided so that the connection between the upper half steel sleeve and the lower half steel sleeve is more stable.

[0028] Preferably, the support member includes a positioning support plate fixedly sleeved on the outside of the boost sleeve, and a support block with a threaded hole is provided at the bottom of one end of the positioning support plate, and the support block is fixedly connected to the fixed plate, and a positioning bolt is connected to the positioning support plate to connect it to the support block, and through the support member provided, the boost sleeve is supported and adjusted.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1. The present invention has a protective correction mechanism provided between the support ring and the fixed plate. The protective correction mechanism can both connect the tunnel portal and the steel sleeve and make them independent of each other. When the shield enters the tunnel portal, the vibration force generated by its excavation is reduced by the protective correction mechanism, thereby ensuring the stability of the steel sleeve. At the same time, the protective correction mechanism cooperates with the measuring block to measure the posture of the shield entering the steel sleeve and correct its deviation at the same time, thereby ensuring the stability of the shield entering the steel sleeve.

[0031] 2. The present invention evenly installs multiple measuring blocks on the support ring, and at the same time, the support ring is sealed with the steel ring at the tunnel portal, and the steel sleeve is fixedly connected to the support ring through a fixed plate and a sealing sleeve, thereby effectively ensuring the sealing of the connection between the steel sleeve and the tunnel portal.

[0032] 3. The present invention has a pressure shell on the fixed ring and a booster connected to the acrylic. Before the shield enters the steel sleeve, the booster makes the upper half of the steel sleeve and the lower half of the steel sleeve more tightly connected, preventing the steel sleeve from leaking due to the pressure of the shield entering. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0034] Figure 2 This is a schematic side view of the steel sleeve structure of the present invention;

[0035] Figure 3 This is a schematic diagram of the explosion structure of the support ring, sealing sleeve and fixed disk of the present invention;

[0036] Figure 4 This is a schematic side view of the sealing sleeve structure of the present invention;

[0037] Figure 5 This is a schematic diagram of the fixed disk structure of the present invention;

[0038] Figure 6 This is a schematic diagram of the mobile ring structure of the present invention;

[0039] Figure 7 This is a schematic diagram of the internal structure of the connecting sleeve of the present invention;

[0040] Figure 8 This is a schematic diagram of the internal structure of the connecting rod of the present invention;

[0041] Figure 9 This is a schematic diagram of the structure of the supercharging component of the present invention;

[0042] Figure 10 It is a schematic side view of the booster sleeve structure of the present invention.

[0043] In the figure: 1-measuring block; 11-measuring contact; 12-pressure sensor; 2-support ring; 21-sealing sleeve; 3-protective correction mechanism; 31-fixed seat; 32-first guide frame; 321-first support shaft; 322-second support shaft; 33-driving mechanism; 331-moving ring; 332-telescopic cylinder; 333-driving motor; 334-driving gear; 335-rotating gear; 34-angle sensor; 35-first guide shaft; 36-connecting sleeve; 37-connecting rod; 38-telescopic positioning member; 381-buffer spring; 382-positioning block; 383-moving groove; 384-locking block; 3 85-wedge end; 386-push block; 387-electric push rod; 39-synchronous rotating part; 391-second guide shaft; 392-second guide frame; 393-fixed plate; 4-fixed disk; 41-fixed bracket; 42-accommodating groove; 43-pressure shell; 44-air guide tube; 5-connecting part; 51-first positioning ear; 52-second positioning ear; 6-reset part; 61-moving block; 62-reset spring; 7-boosting part; 71-pressure plate; 72-push rod; 73-push plug; 74-boosting sleeve; 75-connecting spring; 8-support part; 81-positioning support plate; 82-support block; 83-positioning bolt. DETAILED DESCRIPTION

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0045] See also Figure 1-4 , Example 1

[0046] A shield posture measurement device in a steel sleeve includes a plurality of measuring blocks 1 arranged outside one end of the steel sleeve. In the present application, the plurality of measuring blocks 1 are arranged at a position offset from the bottom of the steel sleeve. The measuring blocks 1 are provided with measuring contacts 11, and the measuring contacts 11 are provided with pressure sensors 12. The plurality of pressure sensors 12 are electrically connected to a controller.

[0047] Multiple measuring blocks 1 are connected to each other with support rings 2, and the support rings 2 are fixed to the tunnel door steel ring by fastening bolts. A sealing gasket is also provided when the support rings 2 are connected to the tunnel door steel ring to ensure the sealing of the connection between the support rings 2 and the tunnel door;

[0048] A protection and correction mechanism 3 is provided on one side of the support ring 2, and the protection and correction mechanism 3 cooperates with multiple pressure sensors 12 to correct the shield when the shield exits the tunnel;

[0049] One end of the protection and correction mechanism 3 is connected to a fixed disk 4, and the fixed disk 4 is hollow inside. A fixed bracket 41 is provided at the bottom of the fixed disk 4, and the fixed disk 4 is fixedly installed on the outside of the tunnel door through the fixed bracket 41. A deformable sealing sleeve 21 is provided between the fixed disk 4 and the support ring 2. The sealing sleeve 21 can bend as the protection and correction mechanism 3 bends, and the sealing sleeve 21 is preferably a stainless steel bellows, and the protection and correction mechanism 3 is arranged around the outside of the sealing sleeve 21.

[0050] One end of the fixed disk 4 is connected to the steel sleeve via a plurality of connectors 5, and the length of the connection between the fixed disk 4 and the support ring 2 via the sealing sleeve 21 is less than 200 mm;

[0051] The protection and correction mechanism 3 includes a plurality of fixing seats 31 fixedly mounted on the fixing plate 4, and the plurality of fixing seats 31 are distributed on the fixing plate 4 in a ring shape.

[0052] A first guide frame 32 is provided on the fixed base 31. A first support shaft 321 and a second support shaft 322 are fixedly connected to both ends of the first guide frame 32. The first support shaft 321 and the second support shaft 322 are both rotatably connected to the fixed base 31. A rotating gear 335 is fixedly connected to one end of the first support shaft 321 located outside the fixed base 31. A driving mechanism 33 for driving the multiple rotating gears 335 is provided on the fixed plate 4.

[0053] An angle sensor 34 is mounted on the first support shaft 321;

[0054] A first guide shaft 35 is fixedly connected to the interior of the first guide frame 32, and a connecting sleeve 36 is rotatably sleeved on the outer side of the first guide shaft 35. A connecting rod 37 is slidably passed through the end of the connecting sleeve 36 away from the first guide frame 32, and a telescopic positioning member 38 is provided between the connecting rod 37 and the connecting sleeve 36;

[0055] The end of the connecting rod 37 away from the connecting sleeve 36 is connected to a synchronous rotating member 39. The synchronous rotating member 39 includes a second guide shaft 391 that passes through one end of the connecting rod 37 and is rotatably connected to the connecting rod 37. The second guide shaft 391 is fixedly connected to a second guide frame 392 at both ends. The two sides of the second guide frame 392 are rotatably connected to a fixing plate 393 via a connecting shaft. The fixing plate 393 is fixedly mounted on the support ring 2.

[0056] The driving mechanism 33 includes a moving ring 331 sleeved on the outside of the fixed plate 4. The fixed plate 4 is equipped with two telescopic cylinders 332 for supporting and pushing the moving ring 331.

[0057] Multiple drive motors 333 are installed at equal distances on the movable ring 331, and the output end of the drive motor 333 is fixedly connected to the drive gear 334 through a coupling. The fixed disk 4 is provided with a groove for moving the multiple drive gears 334. The drive gear 334 is meshed with the rotating gear 335. When the drive gear 334 is meshed with the rotating gear 335, the driving motor 333 is operated, and the rotating gear 335 further drives the first support shaft 321 to rotate.

[0058] The telescopic positioning member 38 includes a buffer spring 381 having one end fixedly connected to the inner wall of the connecting sleeve 36, and a positioning block 382 fixedly connected to the other end of the buffer spring 381. The positioning block 382 is fixedly connected to the connecting rod 37. A through hole is provided between the connecting rod 37 and the positioning block 382, ​​and the positioning block 382 is provided with two movable grooves 383 communicating with the through hole. The movable grooves 383 are slidably connected to the locking blocks 384, and the ends of the two locking blocks 384 that are close to each other are wedge-shaped ends 385.

[0059] A reset member 6 for resetting the locking block 384 is provided inside the movable groove 383. The reset member 6 includes a movable block 61 fixedly connected to the end of the push block 386 away from the locking block 384. A reset spring 62 is fixedly connected to one side of the movable block 61, and one end of the reset spring 62 is fixedly connected to the inner wall of the movable groove 383. The movable block 61 cooperates with the movable groove 383 and is slidably connected to the inside of the movable groove 383.

[0060] A pushing block 386 is slidably connected between the two wedge-shaped ends 385, and the pushing block 386 is set in a trapezoidal shape. At the same time, the inclined surfaces on both sides thereof correspond to the inclined surfaces of the wedge-shaped ends 385, and an electric push rod 387 for driving the pushing block 386 is installed in the internal through hole of the connecting rod 37.

[0061] The inner ring of the fixed plate 4 is provided with a receiving groove 42, and a pressure shell 43 is installed in the receiving groove 42. The side of the pressure shell 43 close to the inner ring of the fixed plate 4 is made of rubber material, while the rest of the pressure shell 43 is supported by stainless steel material. The interior of the pressure shell 43 is filled with gas;

[0062] The pressure shell 43 is connected with two groups of air guide pipes 44 , and one end of the two groups of air guide pipes 44 passes through the fixed plate 4 and is connected to a supercharger 7 , which is connected to the steel sleeve.

[0063] The booster 7 includes two pressing plates 71 arranged on the outside of the steel sleeve. The two pressing plates 71 are respectively located on the outside of the connecting ears of the upper half steel sleeve and the lower half steel sleeve;

[0064] A push rod 72 is fixedly connected to each side of the two pressing plates 71 away from each other, and a push plug 73 is fixedly connected to the push rod 72. A boost sleeve 74 is sleeved on the outer side of the push plug 73. The push plug 73 is connected to the boost sleeve 74 in a cooperative manner. The push plug 73 is made of rubber material and is sealed with the boost sleeve 74.

[0065] A connecting spring 75 connected to the push plug 73 is installed inside the boost sleeve 74, and one end of the air guide tube 44 is connected to the boost sleeve 74;

[0066] A support member 8 for supporting the pressurizing sleeve 74 is mounted on the fixing plate 4 .

[0067] The support member 8 includes a positioning support plate 81 fixedly sleeved on the outside of the boost sleeve 74, and a support block 82 with a threaded hole is provided at the bottom of one end of the positioning support plate 81, and the support block 82 is fixedly connected to the fixed plate 4, and a positioning bolt 83 is connected to the positioning support plate 81 to connect it to the support block 82.

[0068] During installation, the fixed plate 4 is first installed on the outside of the tunnel gate, and then the lower half steel sleeve is fixed on the outside of the fixed plate 4, and then the upper half steel sleeve is sealed and connected to the upper half steel sleeve. In this application, the two lower half steel sleeves and the lower half steel sleeves are provided with protrusions at the positions of the corresponding clamping plates 71, so that by rotating the positioning support plate 81, the boosting sleeve 74 is further moved to the outside of the steel sleeve, and the steel sleeve is further clamped and fixed close to one end of the fixed plate 4 through four clamping plates 71.

[0069] Specific implementation process: (1) Preparation stage: When the support ring 2 is connected to the tunnel door, the angles of the angle sensors 34 on the multiple first support shafts 321 are the same, the telescopic cylinder 332 is in a retracted state, and at the same time, the multiple drive motors 333 are connected to the moving ring 331 and move along the position of the steel sleeve, that is, to ensure that the multiple drive gears 334 deviate from the rotating gear 335, and at the same time, the electric cylinder push rod is retracted, and the positioning block 382 does not contact the inner wall of the connecting sleeve 36. At the same time, under the connection of the sealing sleeve 21, the centers of the support ring 2, the fixed plate 4 and the steel sleeve are on the same straight line;

[0070] (2) The shield moves along the tunnel portal: When the shield tunnel enters the tunnel portal, the vibration force generated by its excavation causes the steel plate at the tunnel portal to be subjected to a large vibration force. At this time, the multiple connecting rods 37 at the support ring 2 move telescopically relative to the connecting sleeve 36, and under the action of the multiple buffer springs 381, the vibration force on the support ring 2 is further reduced. At the same time, the vibration force is greatly reduced when it is transmitted to the cylinder sleeve;

[0071] (3) The steel plate at the portal is vibrated and deflected: the support ring 2 and the steel plate deflect at a certain angle synchronously. At this time, the shield enters the support ring 2 from the portal. When the value detected by the pressure sensor 12 exceeds its set value, the controller will receive a signal and control the multiple angle sensors 34 respectively. At this time, the telescopic cylinder 332 extends to move the driving gear 334 to the rotating gear 335. At the same time, the electric push rod 387 extends to move the pushing block 386 along the two locking blocks 384. When the pushing block 386 While moving along the locking block 384, one end of the locking block 384 is synchronously pushed to move out of the moving groove 383 until the end abuts against the inner wall of the connecting sleeve 36, that is, the connecting rod 37 and the connecting sleeve 36 are locked to each other. Subsequently, the driving motors 333 at the multiple first support shafts 321 cooperate with each other to operate, and under the action of the angle sensor 34, the multiple first support shafts 321 drive the support ring 2 to correct a certain angle until the values ​​of the multiple pressure sensors 12 reach the set values, further realizing the shield reset function;

[0072] (4) The shield enters the interior of the steel sleeve from the fixed plate 4: When the shield moves from the tunnel portal to the fixed plate 4, it generates a large air pressure. At this time, the air pressure squeezes the pressure shell 43, causing one side of the pressure shell 43 to deform. The pressure shell 43 then introduces the air pressure into the boost sleeve 74 through the air guide pipe 44, further causing the push plug 73 to move along the boost sleeve 74, so that the push rod 72 drives the push plate to push the connecting ear at the steel sleeve, and the connection between the two push plates makes the upper half steel sleeve and the lower plate steel sleeve more tightly.

[0073] Example 2

[0074] The connecting member 5 includes a plurality of first positioning ears 51 mounted on the side of the fixing plate 4 close to the steel sleeve, and the first positioning ears 51 are threadedly connected to the second positioning ears 52 via sealing bolts, and the plurality of second positioning ears 52 are fixedly mounted on the steel sleeve;

[0075] At the same time, a sealing groove is provided on one side of the steel sleeve close to the fixed disk 4, a sealing ring is provided at the sealing groove, and a protrusion is provided at the position of the fixed disk 4 corresponding to the sealing groove, thereby ensuring the sealing of the connection between the fixed disk 4 and the steel sleeve.

[0076] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0077] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A shield posture measurement device in a steel sleeve, characterized by: The invention comprises a plurality of measuring blocks (1) arranged outside one end of a steel sleeve, wherein the measuring blocks (1) are provided with measuring contacts (11), and the measuring contacts (11) are provided with pressure sensors (12), and the plurality of pressure sensors (12) are all electrically connected to a controller; A plurality of the measuring blocks (1) are connected to each other with support rings (2), and the support rings (2) are fixedly mounted on the tunnel gate steel ring by fastening bolts; A protection and correction mechanism (3) is provided on one side of the support ring (2), and the protection and correction mechanism (3) cooperates with a plurality of pressure sensors (12) to correct the shield when the shield exits the tunnel; One end of the protection and correction mechanism (3) is connected to a fixed disk (4), and the fixed disk (4) is hollow inside. A fixed bracket (41) is provided at the bottom of the fixed disk (4), and the fixed disk (4) is fixedly mounted on the outside of the tunnel door through the fixed bracket (41). A deformable sealing sleeve (21) is provided between the fixed disk (4) and the support ring (2); One end of the fixed disk (4) is connected to the steel sleeve via a plurality of connecting pieces (5); The protection and correction mechanism (3) comprises a plurality of fixing seats (31) fixedly mounted on the fixing plate (4), wherein the plurality of fixing seats (31) are distributed on the fixing plate (4) in a circular manner. The fixed seat (31) is provided with a first guide frame (32), and the two ends of the first guide frame (32) are respectively fixedly connected to a first support shaft (321) and a second support shaft (322), the first support shaft (321) and the second support shaft (322) are both rotatably connected to the fixed seat (31), and one end of the first support shaft (321) located outside the fixed seat (31) is fixedly connected to a rotating gear (335), and the fixed disk (4) is provided with a driving mechanism (33) for driving the plurality of rotating gears (335); An angle sensor (34) is installed on the first support shaft (321); The first guide frame (32) is fixedly connected to a first guide shaft (35) inside, and a connecting sleeve (36) is rotatably sleeved on the outside of the first guide shaft (35), and a connecting rod (37) is slidably passed through the end of the connecting sleeve (36) away from the first guide frame (32), and a telescopic positioning member (38) is provided between the connecting rod (37) and the connecting sleeve (36); One end of the connecting rod (37) away from the connecting sleeve (36) is connected to a synchronous rotating member (39).

2. The device for measuring the posture of a shield machine in a steel sleeve according to claim 1, characterized in that: The driving mechanism (33) comprises a moving ring (331) sleeved on the outside of a fixed disk (4), and two telescopic cylinders (332) for supporting and pushing the moving ring (331) are installed on the fixed disk (4); A plurality of drive motors (333) are mounted at equal distances on the movable ring (331), and the output end of the drive motor (333) is fixedly connected to a drive gear (334) via a coupling. The fixed disk (4) is provided with grooves for moving the plurality of drive gears (334), and the drive gears (334) are meshedly connected with the rotating gear (335).

3. The device for measuring the posture of a shield machine in a steel sleeve according to claim 1, characterized in that: The telescopic positioning member (38) includes a buffer spring (381) with one end fixedly connected to the inner wall of the connecting sleeve (36), and the other end of the buffer spring (381) is fixedly connected to a positioning block (382), and the positioning block (382) is fixedly connected to the connecting rod (37), a through hole is provided between the connecting rod (37) and the positioning block (382), and the positioning block (382) is provided with two movable grooves (383) connected to the through hole, and a locking block (384) is slidably connected to the movable groove (383), and the ends of the two locking blocks (384) close to each other are wedge-shaped ends (385); A reset member (6) for resetting the locking block (384) is provided inside the movable groove (383); A pushing block (386) is slidably connected between the two wedge-shaped ends (385), and an electric push rod (387) for driving the pushing block (386) is installed at the internal through hole of the connecting rod (37).

4. The device for measuring the posture of a shield machine in a steel sleeve according to claim 3, characterized in that: The reset member (6) includes a moving block (61) fixedly connected to one end of the pushing block (386) away from the locking block (384), and a reset spring (62) is fixedly connected to one side of the moving block (61), and one end of the reset spring (62) is fixedly connected to the inner wall of the moving groove (383).

5. The device for measuring the posture of a shield machine in a steel sleeve according to claim 1, characterized in that: The synchronous rotating member (39) includes a second guide shaft (391) that passes through one end of the connecting rod (37), and the second guide shaft (391) is rotatably connected to the connecting rod (37). The two ends of the second guide shaft (391) are fixedly connected to a second guide frame (392), and the two sides of the outside of the second guide frame (392) are rotatably connected to a fixed plate (393) through a connecting shaft, and the fixed plate (393) is fixedly installed on the support ring (2).

6. The device for measuring the posture of a shield machine in a steel sleeve according to claim 2, characterized in that: The inner ring of the fixed disk (4) is provided with a receiving groove (42), and a pressure shell (43) is installed at the receiving groove (42), and the interior of the pressure shell (43) is filled with gas; The pressure shell (43) is connected to two groups of air guide pipes (44), and one end of the two groups of air guide pipes (44) passes through the fixed plate (4) and is connected to a supercharger (7), and the supercharger (7) is connected to the steel sleeve.

7. The device for measuring the posture of a shield machine in a steel sleeve according to claim 6, characterized in that: The pressurizing member (7) comprises two pressing plates (71) arranged on the outside of the steel sleeve, and the two pressing plates (71) are respectively located on the outside of the connecting ears of the upper half steel sleeve and the lower half steel sleeve; The two pressing plates (71) are fixedly connected to a push rod (72) on one side away from each other, and a push plug (73) is fixedly connected to the push rod (72). A boost sleeve (74) is sleeved on the outside of the push plug (73), and the push plug (73) is cooperatively connected to the boost sleeve (74); A connecting spring (75) connected to the push plug (73) is installed inside the boosting sleeve (74), and one end of the air guide tube (44) is connected to the boosting sleeve (74); A support member (8) for supporting the boost sleeve (74) is installed on the fixed disk (4).

8. The device for measuring the posture of a shield machine in a steel sleeve according to claim 7, characterized in that: The support member (8) includes a positioning support plate (81) fixedly sleeved on the outside of the boost sleeve (74), and a support block (82) with a threaded hole is provided at the bottom of one end of the positioning support plate (81), and the support block (82) is fixedly connected to the fixed plate (4). A positioning bolt (83) is connected to the positioning support plate (81) to connect it to the support block (82).

Images