Shield tunneling thrust regulation and control device for stratum with uneven hardness

Abstract

The utility model discloses a shield tunneling thrust regulation and control device for a stratum with uneven hardness, which comprises a shield tunneling thrust hydraulic cylinder main body, a tunneling thrust hydraulic cylinder body and a piston rod, one end of the piston rod is positioned in the tunneling thrust hydraulic cylinder body, and the piston rod moves; the antifouling shielding assembly comprises a fixed cover installed on the outer side of one end of the tunneling thrust hydraulic cylinder body, a stable cover installed on the outer side, away from the end of the tunneling thrust hydraulic cylinder body, of the piston rod, and a shielding sleeve installed between the fixed cover and the stable cover and arranged on the outer side of the piston rod in a sleeving mode. A support assembly; the hydraulic cylinder thrust regulation and control device is provided with an anti-pollution design for preventing sundries from entering the cylinder barrel and making contact with the piston cylinder, the shielding sleeve covers the piston rod, and the shielding sleeve is foldable and can stretch out and draw back or be folded in a shielding mode along with movement of the piston rod, so that pollutants and impurities are prevented from entering the tunneling thrust hydraulic cylinder body and making contact with the piston rod; the shielding sleeve is supported by the first supporting ring and the second supporting ring, so that the shielding sleeve can be folded and unfolded smoothly.

Description

Technical Field

[0001] The utility model belongs to the technical field of shield machine propulsion devices, and in particular relates to a thrust control device for shield tunneling in soft and hard uneven strata. Background Art

[0002] The shield machine is composed of the main components such as the fuselage, scissor frame, propulsion plate, front shield, and segment rotation platform. The equipment on the shield machine mainly includes propulsion device, segment assembly device, grouting device, rock breaking machinery and other equipment, which are used for tunnel propulsion, segment assembly, consolidation and rock breaking. The propulsion device of the shield machine is one of the important components of the shield machine. It is used to achieve propulsion in the process of excavating tunnels under soft and hard uneven strata through the propulsion head. The propulsion device mainly includes forward thrust (or propulsion) cylinders, jacks, supporting hydraulic cylinders, side thrust cylinders, etc., which can adjust and control the movement of the shield machine in multiple directions such as propulsion and rotation in soft and hard uneven underground engineering tunnels. The hydraulic cylinder is an important excavation thrust control device;

[0003] The hydraulic cylinder may have abnormal stroke during long-term use. One of the reasons is that the hydraulic cylinder is contaminated or impurities are mixed into the surface of the hydraulic cylinder, causing the seal to wear. There is no anti-pollution design on the hydraulic cylinder, which cannot prevent debris from entering the cylinder and contacting the piston cylinder; when the hydraulic cylinder thrust control device is in use, there is a problem of no anti-pollution design to prevent debris from entering the cylinder and contacting the piston cylinder. For this reason, this application proposes a thrust control device for shield tunneling in soft and hard uneven strata. Utility Model Content

[0004] The purpose of the present utility model is to provide a thrust control device for shield tunneling in soft and hard uneven strata, so as to solve the problem that the hydraulic cylinder thrust control device proposed in the above background technology has no anti-pollution design to prevent debris from entering the cylinder and contacting the piston cylinder.

[0005] To achieve the above purpose, the present invention provides the following technical solutions: a thrust control device for shield tunneling in soft and hard uneven strata, comprising

[0006] The shield tunnel boring thrust hydraulic cylinder body comprises a boring thrust hydraulic cylinder body and a piston rod with one end located inside the boring thrust hydraulic cylinder body and moving;

[0007] The anti-fouling shielding assembly includes a fixed cover installed on the outside of one end of the tunneling thrust hydraulic cylinder, a stabilizing cover installed on the outside of the end of the piston rod away from the tunneling thrust hydraulic cylinder, and a shielding sleeve installed between the fixed cover and the stabilizing cover and sleeved on the outside of the piston rod;

[0008] The support assembly includes a fixed cylinder mounted on the fixed cover, a first slide rod with one end slidably inserted into the fixed cylinder, and a second slide rod with one end slidably inserted into the first slide rod, wherein the first slide rod has a first support ring on its end that fits with the shielding sleeve, and the second slide rod has a second support ring on its end that fits with the shielding sleeve;

[0009] The oil filling assembly includes an oil storage half ring inside the fixed cover, an oil filling pipe penetrating the outer surface of the fixed cover and communicating with the interior of the oil storage half ring, and a support member, wherein the support member includes a limit plate that matches the inner surface of the oil storage half ring, and a fixed plate symmetrically distributed on the outer surface of the limit plate and connected to the inner wall of the fixed cover at one end;

[0010] The extrusion assembly includes a driving cylinder installed on the outer surface of the fixed cover, an extrusion plate installed inside the fixed cover and matching the outer surface of the oil storage half ring, and one end of the driving cylinder is connected to the extrusion plate.

[0011] Preferably, the shielding sleeve is in the shape of a folded bellows, the fixed cover includes a first annular tube on one side, a conical tube in the middle position and a second annular tube on the other side, the two ends of the shielding sleeve are respectively connected to the second annular tube and the stable cover, and the fixed cylinder is installed on the outer surface of the conical tube.

[0012] Preferably, the first sliding rod passes through the surface of the conical tube, and the first branch ring and the second branch ring are parallel.

[0013] Preferably, an oil storage cavity a is provided inside the oil storage half ring, the oil filling pipe is connected to the oil storage cavity a, and an oil outlet hole connected to the oil storage cavity a is opened on the surface of the oil storage half ring away from the extrusion plate.

[0014] Preferably, an oil storage tank is provided on the surface of the limit plate facing the oil outlet hole, and an oil outlet tank connected to the oil storage tank is provided on the surface of the limit plate facing away from the extrusion plate.

[0015] Preferably, the limiting plate is in the shape of a semicircular ring, the outer diameter of the limiting plate is the same as the inner diameter of the oil storage semi-ring, and the inner diameter of the limiting plate is the same as the outer diameter of the piston rod.

[0016] Preferably, the extrusion plate is in an arc shape, the inner diameter of the extrusion plate is the same as the outer diameter of the oil storage half ring, and the fixing plates are symmetrically distributed on both sides of the extrusion plate.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] In the utility model, the hydraulic cylinder thrust control device has an anti-pollution design to prevent debris from entering the cylinder and contacting the piston cylinder. The shielding sleeve covers the piston rod. The shielding sleeve is foldable and can be expanded or folded up as the piston rod moves, thereby preventing pollutants and impurities from entering the interior of the excavation thrust hydraulic cylinder body and contacting the piston rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 This is a schematic cross-sectional view of the fixed cover of the present utility model;

[0021] Figure 3 This is a schematic cross-sectional view of the fixed cover of the present utility model;

[0022] Figure 4 For the utility model Figure 3 Schematic diagram of the side structure of the middle extruded plate;

[0023] Figure 5 For the utility model Figure 3 A schematic diagram of the side structure of the middle limit plate;

[0024] In the figure: 2. Fixed cover; 3. Shielding sleeve; 4. Stabilizing cover; 5. Driving cylinder; 6. Extrusion plate; 8. Oil storage half ring; 11. Excavation thrust hydraulic cylinder body; 12. Piston rod; 21. Oil filling pipe; 31. Fixed cylinder; 32. First slide bar; 33. Second slide bar; 61. Oil outlet hole; 71. Fixed plate; 72. Limiting plate; 321. First support ring; 331. Second support ring; 721. Oil storage tank; 722. Oil outlet tank. DETAILED DESCRIPTION

[0025] 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 embodiments described 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.

[0026] Example

[0027] See also Figures 1 to 5The present invention provides a technical solution: a shield tunnel boring thrust control device for soft and hard uneven strata, including a shield tunnel boring thrust hydraulic cylinder body, including a boring thrust hydraulic cylinder body 11, and a piston rod 12 with one end located inside the boring thrust hydraulic cylinder body 11 and moving. When liquid is pumped into the liquid boring thrust hydraulic cylinder body 11, the pressure of the liquid is transmitted to the piston rod 12 through the boring thrust hydraulic cylinder body 11, thereby generating thrust, causing the piston rod 12 to move. The method of using the shield tunnel boring thrust hydraulic cylinder body is a conventional technical means and will not be described in detail in this application; the anti-fouling shielding component includes a fixed cover 2 installed on the outer side of one end of the boring thrust hydraulic cylinder body 11. , a stabilizing cover 4 installed on the outside of the end of the piston rod 12 away from the tunneling thrust hydraulic cylinder body 11, a shielding sleeve 3 installed between the fixed cover 2 and the stabilizing cover 4 and sleeved on the outside of the piston rod 12, the shielding sleeve 3 covers the piston rod 12 to prevent pollutants and impurities from entering the interior of the tunneling thrust hydraulic cylinder body 11 and contacting the piston rod 12, the shielding sleeve 3 is foldable and can be expanded or folded with the movement of the piston rod 12; a supporting assembly includes a fixed cylinder 31 installed on the fixed cover 2, a first sliding rod 32 with one end slidingly inserted into the interior of the fixed cylinder 31, and a second sliding rod 33 with one end slidingly inserted into the interior of the first sliding rod 32. The fixed cylinder 31 and the fixed cover 2 are combined by conventional methods. The end of the first slide rod 32 is provided with a first support ring 321 which is in contact with the shielding sleeve 3, and the end of the second slide rod 33 is provided with a second support ring 331 which is in contact with the shielding sleeve 3. The first support ring 321 and the second support ring 331 are bonded to the shielding sleeve 3 by conventional methods. The first support ring 321 and the second support ring 331 support the shielding sleeve 3 to prevent the shielding sleeve 3 from being deformed and unable to be folded and unfolded smoothly; the oil filling assembly includes an oil storage half ring 8 inside the fixed cover 2, an oil filling pipe 21 which passes through the outer surface of the fixed cover 2 and is connected to the interior of the oil storage half ring 8, and a support member, which includes a limiting plate 72 which is consistent with the inner surface of the oil storage half ring 8, and a symmetrically distributed outer surface of the limiting plate 72 with one end connected to the inner surface of the fixed cover 2. The fixed plate 71 is connected to the wall, and a conventional external oil filling device injects lubricating oil into the oil filling pipe 21. The oil filling pipe 21 transports the lubricating oil to the oil storage half ring 8 for storage. The lubricating oil flows out and passes through the limit plate 72 and is applied to the outer surface of the piston rod 12 to achieve a lubrication effect; the extrusion assembly includes a driving cylinder 5 installed on the outer surface of the fixed cover 2, and an extrusion plate 6 installed inside the fixed cover 2 and matched with the outer surface of the oil storage half ring 8. One end of the driving cylinder 5 is connected to the extrusion plate 6. The driving cylinder 5 and the fixed cover 2 are combined by a conventional method. The driving cylinder 5 drives the extrusion plate 6 to move, so that the extrusion plate 6 squeezes the oil storage half ring 8, which is beneficial for the lubricating oil stored in the oil storage half ring 8 to squeeze out and lubricate the piston rod 12.

[0028] In this embodiment, the shielding sleeve 3 is in the shape of a folding bellows, and the shielding sleeve 3 can be folded or stretched as the piston rod 12 moves. The fixed cover 2 includes a first ring tube on one side, a conical tube in the middle position and a second ring tube on the other side. The two ends of the shielding sleeve 3 are respectively connected to the second ring tube and the stabilizing cover 4. The fixing cylinder 31 is installed on the outer surface of the conical tube. The first sliding rod 32 passes through the surface of the conical tube. The first branch ring 321 and the second branch ring 331 are parallel. The first branch ring 321 and the second branch ring 331 support the shielding sleeve 3 to prevent the shielding sleeve 3 from deformation and inability to fold and unfold smoothly.

[0029] In this embodiment, an oil storage chamber a is provided inside the oil storage half ring 8, and the oil filling pipe 21 is connected to the oil storage chamber a. An oil outlet hole 61 connected to the oil storage chamber a is provided on the surface of the oil storage half ring 8 facing away from the extrusion plate 6, and an oil storage groove 721 is provided on the surface of the limiting plate 72 facing the oil outlet hole 61. An oil outlet groove 722 connected to the oil storage groove 721 is provided on the surface of the limiting plate 72 facing away from the extrusion plate 6. The oil filling pipe 21 transports the lubricating oil to the oil storage half ring 8 for storage, and the lubricating oil flows out from the oil outlet hole 61 and flows into the oil storage groove 721, and then passes through the oil outlet groove 722 on the limiting plate 72 and is smeared on the outer surface of the piston rod 12 to achieve a lubrication effect.

[0030] In this embodiment, the limiting plate 72 is in the shape of a semicircular ring, the outer diameter of the limiting plate 72 is the same as the inner diameter of the oil storage half ring 8, the inner diameter of the limiting plate 72 is the same as the outer diameter of the piston rod 12, the limiting plate 72 made of alloy material supports the oil storage half ring 8 made of rubber material to prevent the oil storage half ring 8 from being unstable, the extrusion plate 6 is in the shape of a circular arc, the inner diameter of the extrusion plate 6 is the same as the outer diameter of the oil storage half ring 8, and the fixing plates 71 are symmetrically distributed on both sides of the extrusion plate 6.

[0031] The working principle and use process of this utility model:

[0032] When the shield tunneling thrust hydraulic cylinder is in use, the shielding sleeve 3 covers the piston rod 12. The shielding sleeve 3 is foldable and can be expanded or folded with the movement of the piston rod 12 to prevent pollutants and impurities from entering the interior of the thrust hydraulic cylinder body 11 and contacting the piston rod 12.

[0033] The first support ring 321 and the second support ring 331 support the shielding cover 3 to prevent the shielding cover 3 from being deformed and unable to be folded and unfolded smoothly;

[0034] The oil filling pipe 21 delivers lubricating oil to the oil storage half ring 8 for storage;

[0035] The lubricating oil flows out of the oil outlet hole 61 and flows into the oil storage tank 721 , then passes through the oil outlet groove 722 on the limit plate 72 and is applied to the outer surface of the piston rod 12 to achieve a lubricating effect;

[0036] The driving cylinder 5 drives the extrusion plate 6 to move, so that the extrusion plate 6 squeezes the oil storage half ring 8, which is conducive to the lubricating oil stored in the oil storage half ring 8 to squeeze out the lubricating piston rod 12;

[0037] To sum up: the hydraulic cylinder thrust control device has an anti-pollution design to prevent debris from entering the cylinder and contacting the piston cylinder. The shielding sleeve 3 covers the piston rod 12. The shielding sleeve 3 is foldable and can be expanded or folded as the piston rod 12 moves, preventing pollutants and impurities from entering the interior of the excavation thrust hydraulic cylinder body 11 and contacting the piston rod 12.

[0038] Although embodiments of the present invention have been shown and described (see the detailed description above for details), it will be understood 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 present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A thrust control device for shield tunneling in soft and hard uneven strata, characterized by: The invention comprises a shield tunnel boring thrust hydraulic cylinder body, comprising a boring thrust hydraulic cylinder body (11), and a piston rod (12) with one end located inside the boring thrust hydraulic cylinder body (11) and movable; The anti-fouling shielding assembly comprises a fixed cover (2) mounted on the outside of one end of a tunneling thrust hydraulic cylinder (11), a stabilizing cover (4) mounted on the outside of the end of a piston rod (12) away from the tunneling thrust hydraulic cylinder (11), and a shielding sleeve (3) mounted between the fixed cover (2) and the stabilizing cover (4) and sleeved on the outside of the piston rod (12); The support assembly comprises a fixed cylinder (31) mounted on the fixed cover (2), a first slide rod (32) with one end slidingly inserted into the interior of the fixed cylinder (31), and a second slide rod (33) with one end slidingly inserted into the interior of the first slide rod (32), wherein a first support ring (321) is provided on the end of the first slide rod (32) and is fitted with the shielding sleeve (3), and a second support ring (331) is provided on the end of the second slide rod (33) and is fitted with the shielding sleeve (3); An oil injection assembly comprises an oil storage half ring (8) inside a fixed cover (2), an oil injection pipe (21) penetrating the outer surface of the fixed cover (2) and communicating with the interior of the oil storage half ring (8), and a support member, wherein the support member comprises a limit plate (72) matching the inner surface of the oil storage half ring (8), and a fixed plate (71) symmetrically distributed on the outer surface of the limit plate (72) and connected at one end to the inner wall of the fixed cover (2); The extrusion assembly comprises a driving cylinder (5) mounted on the outer surface of a fixed cover (2), an extrusion plate (6) mounted inside the fixed cover (2) and matching the outer surface of an oil storage half ring (8), and one end of the driving cylinder (5) is connected to the extrusion plate (6).

2. The thrust control device for shield tunneling in soft and hard uneven strata according to claim 1, characterized in that: The shielding sleeve (3) is in the shape of a folded bellows, the fixed cover (2) comprises a first annular tube on one side, a conical tube in the middle, and a second annular tube on the other side, the two ends of the shielding sleeve (3) are respectively connected to the second annular tube and the stabilizing cover (4), and the fixed cylinder (31) is mounted on the outer surface of the conical tube.

3. The thrust control device for shield tunneling in soft and hard uneven strata according to claim 2, characterized in that: The first sliding rod (32) passes through the surface of the conical tube, and the first branch ring (321) and the second branch ring (331) are parallel.

4. The thrust control device for shield tunneling in soft and hard uneven strata according to claim 1 is characterized by: An oil storage cavity a is provided inside the oil storage half ring (8), the oil injection pipe (21) is connected to the oil storage cavity a, and an oil outlet hole (61) connected to the oil storage cavity a is provided on the surface of the oil storage half ring (8) facing away from the extrusion plate (6).

5. The thrust control device for shield tunneling in soft and hard uneven strata according to claim 4, characterized in that: An oil storage groove (721) is provided on the surface of the limiting plate (72) facing the oil outlet hole (61), and an oil outlet groove (722) communicating with the oil storage groove (721) is provided on the surface of the limiting plate (72) facing away from the extrusion plate (6).

6. The thrust control device for shield tunneling in soft and hard uneven strata according to claim 1, characterized in that: The limiting plate (72) is in a semicircular ring shape, the outer diameter of the limiting plate (72) is the same as the inner diameter of the oil storage semi-ring (8), and the inner diameter of the limiting plate (72) is the same as the outer diameter of the piston rod (12).

7. The thrust control device for shield tunneling in soft and hard uneven strata according to claim 1, characterized in that: The extrusion plate (6) is in an arc shape, the inner diameter of the extrusion plate (6) is the same as the outer diameter of the oil storage half ring (8), and the fixing plates (71) are symmetrically distributed on both sides of the extrusion plate (6).

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