Shield tunneling machine cutterhead suitable for small-radius tunneling

Abstract

The utility model discloses a shield tunneling machine cutterhead suitable for small-radius tunneling, and relates to the technical field of shield tunneling machines. The shield tunneling machine cutterhead suitable for small-radius tunneling comprises a shield tunneling machine cutterhead body. A plurality of discharging openings are formed in the top of the shield tunneling machine cutter head body; and the multiple sets of fixing mechanisms are arranged, and each set of fixing mechanism comprises a cutter and two sets of pushing components. According to the shield tunneling machine cutterhead suitable for small-radius tunneling, a fixed threaded rod is adjusted to rotate, a threaded barrel pushes an auxiliary clamping plate to move, the shield tunneling machine cutterhead body can be installed in an auxiliary mode, displacement of the shield tunneling machine cutterhead body during installation is avoided, an electric telescopic rod pushes a movable plate to move, a cutter can be fixed or loosened, and the cutter is convenient to install and detach; by means of gradual arrangement and distribution of the cutters and arrangement of the reinforcing rods and the supporting rods, lateral force and torque changes generated in the steering tunneling process can be effectively coped with, and deformation or failure of the shield tunneling machine cutter head body and the cutters in the long-distance tunneling process is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a shield machine technical field, concretely to a shield machine cutter head suitable for small radius tunneling. BACKGROUND

[0002] The shield machine is a tunnel boring machine using shield method, and is often used for long-distance continuous operation in tunneling, especially in projects such as city tunnels and underground pipe galleries that need to turn, and in long-distance small-radius tunneling, the shield machine cutter head needs to maintain efficient cutting during long-time turning.

[0003] The existing shield machine cutter head suitable for small-radius tunneling is generally fixed by multiple bolts when installing the shield machine cutter into the shield machine, and it is troublesome to fix the bolt holes due to the heavy shield machine cutter head, and the bolt holes are easy to deviate during alignment, the existing shield machine cutter head suitable for small-radius tunneling is inconvenient for dismounting and mounting the cutting knife during long-term use, the cutting knife is fixed in the mounting groove by bolts, the cutting knife is difficult to dismount and mount during long-term use, the cutting tools on the outside and inside of the cutting knife are subjected to large differences in force during the turning process with small turning radius, resulting in greater load on the outside cutting tools and accelerated wear, and the shield machine cutter head is subjected to large lateral force during tunneling, the torque of the cutter head changes greatly, the torsional rigidity of the cutter head structure is insufficient, and deformation or failure may occur during long-term tunneling, causing the tunneling to deviate from the predetermined trajectory, which not only affects the service life of the cutting tool, but also may cause uneven cutting and affect the stability of the tunneling. SUMMARY

[0004] The utility model provides a shield machine cutter head suitable for small-radius tunneling, the fixed motor drives the fixed threaded rod to rotate, the connecting rod and the connecting barrel are limited, the threaded barrel can drive the auxiliary clamping plate to move, and then the fixed screw rod is fixed, which can assist in installing the shield machine cutter head body, avoid the displacement of the shield machine cutter head body during installation, open the electric telescopic rod to drive the moving plate to move, two moving plates can fix the cutting knife in the mounting groove, which can facilitate the user to install and dismount the cutting knife, the cutting knives are arranged in the shield machine cutter head body in a progressive manner, ensuring that the outside and inside of the cutting knife are balanced in small-radius tunneling, reducing cutting knife wear and prolonging service life, the lateral force and torque change generated during turning tunneling can be effectively coped with by the setting of the reinforcing rod and the supporting rod, and deformation or failure of the shield machine cutter head body during long-distance tunneling can be avoided.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a shield machine cutterhead suitable for small radius excavation, comprising: a shield machine cutterhead body; a plurality of discharge ports are provided on the top of the shield machine cutterhead body, and a center knife is fixedly embedded at the top center of the shield machine cutterhead body; a fixing mechanism, wherein a plurality of fixing mechanisms are provided, each group of the fixing mechanisms includes a cutter and two groups of pushing parts, a plurality of mounting grooves are provided on the top of the shield machine cutterhead body, each group of pushing parts is arranged in the mounting groove, and the cutter is arranged on the pushing part; an auxiliary mechanism, wherein the auxiliary mechanism includes a plurality of reinforcing rods, a supporting part, two groups of pushing parts and four groups of limiting parts, one end of each of the reinforcing rods is fixedly connected to the bottom of the shield machine cutterhead body, the supporting part is arranged on the reinforcing rod, each group of the pushing parts is arranged on the supporting part, and each group of the limiting parts is arranged on the pushing part.

[0006] Furthermore, each group of the pushing components includes two electric telescopic rods, two movable plates and four sliding rods, one end of each electric telescopic rod is fixedly connected to the inner wall of one side of the mounting groove, the outer surface of one side of each movable plate is fixedly connected to the extended end of the electric telescopic rod, the bottom of each two sliding rods is fixedly connected to the top of the movable plate, and each sliding rod is slidably embedded in the upper inner wall of the mounting groove.

[0007] Furthermore, the support component includes multiple support rods and fixing rings, each of the support rods is fixedly connected between the reinforcement rod and the shield machine cutter head body, and the fixing ring is fixedly connected to one end of the multiple reinforcement rods.

[0008] Furthermore, each group of the pushing components includes a fixed motor, a fixed threaded rod, a threaded barrel and an auxiliary splint, one end of the fixed threaded rod rotates and passes through the inner wall of one side of the fixed ring, the threaded barrel is threadedly sleeved on the outer surface of the fixed threaded rod, the outer surface of one side of the auxiliary splint is fixedly connected to one end of the threaded barrel, the bottom of the fixed motor is fixedly connected to the top of the fixed ring, and the output end of the fixed motor is fixedly connected to one end of the fixed threaded rod.

[0009] Furthermore, each set of the limiting components includes a connecting rod and a connecting tube, one end of the connecting rod is fixedly connected to the inner wall of one side of the fixing ring, one end of the connecting tube is fixedly connected to the outer surface of one side of the auxiliary splint, and the connecting tube is slidably sleeved on the outer surface of the connecting rod.

[0010] Furthermore, the top of the fixing ring is threadedly connected with a plurality of fixing screws.

[0011] The utility model provides a shield machine cutterhead suitable for small radius excavation. It has the following beneficial effects:

[0012] (1), the shield machine cutter suitable for small radius tunneling, through the fixed motor drives fixed threaded rod rotation, through the connecting rod and the limiting of connecting cylinder, can make the threaded cylinder push auxiliary clamping plate moves, then through the fixed screw rod fixed, can assist to install the shield machine cutter body, avoid the shield machine cutter body displacement when installing the shield machine cutter body.

[0013] (2), the shield machine cutter suitable for small radius tunneling, open electric telescopic rod push moving plate moves, two moving plates can fix the cutter in the installation groove, can facilitate the user to install and disassemble the cutter.

[0014] (3), the shield machine cutter suitable for small radius tunneling, through the progressive arrangement of cutter distribution in shield machine cutter body, ensure that the cutter in small radius tunneling, the outside and inside of cutter stress balance, reduce the cutter wear, prolong the service life, through the setting of reinforcing rod and support rod can effectively deal with the lateral force and torque change generated in steering tunneling, avoid the deformation or failure of shield machine cutter body in long distance tunneling. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 it is front view perspective view of the utility model;

[0016] Figure 2 it is front view perspective view of the utility model;

[0017] Figure 3 it is side view perspective view of the utility model;

[0018] Figure 4 it is front view perspective view of the utility model; Figure 3 A part of the utility model is sectional view;

[0019] Figure 5 it is front view perspective view of the utility model;

[0020] In the drawing: 1, shield machine cutter body; 2, discharge port; 3, center cutter; 4, fixed mechanism; 401, installation groove; 402, cutter; 403, electric telescopic rod; 404, moving plate; 405, slide rod; 5, auxiliary mechanism; 501, reinforcing rod; 502, support rod; 503, fixed ring; 504, fixed motor; 505, fixed threaded rod; 506, threaded cylinder; 507, connecting rod; 508, connecting cylinder; 509, auxiliary clamping plate; 510, fixed screw rod. DETAILED DESCRIPTION

[0021] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments, and all the other embodiments obtained by a person of ordinary skill in the art without creative effort on the basis of the embodiments of the present application shall fall within the scope of the present application.

[0022] Please refer to Figures 1-5 The utility model provides a technical scheme: a kind of shield machine cutter head suitable for small radius tunneling, it include: shield machine cutter head body 1;Multiple discharge ports 2 are opened in the top of shield machine cutter head body 1, and center knife 3 is fixedly embedded in the top center of shield machine cutter head body 1;Fixing mechanism 4, fixing mechanism 4 is provided with multiple groups, and each group of fixing mechanism 4 includes cutter 402 and two groups of pushing components, multiple mounting grooves 401 are opened in the top of shield machine cutter head body 1, each group of pushing components is arranged in mounting groove 401, and cutter 402 is arranged on pushing component;Auxiliary mechanism 5, auxiliary mechanism 5 includes multiple reinforcing bars 501, support component, two groups of pushing components and four groups of limiting components, one end of each reinforcing bar 501 is fixedly connected to the bottom of shield machine cutter head body 1, support component is arranged on reinforcing bar 501, each group of pushing components is arranged on support component, and each group of limiting components is arranged on pushing component.

[0023] In the embodiment: the setting of discharge port 2 is used to discharge the soil cut down, cutter 402 is arranged in shield machine cutter head body 1 by progressive arrangement and distribution, to ensure that the outside and inside of cutter 402 are balanced in small radius tunneling, reduce the wear of cutter 402, prolong service life, the setting of two groups of pushing components is used to fix cutter 402, which can facilitate the disassembly and installation of cutter 402, the setting of auxiliary mechanism 5 is used to assist fixing shield machine cutter head body 1, the setting of multiple reinforcing bars 501 can effectively cope with lateral force and torque change generated in steering tunneling, to avoid deformation or failure of shield machine cutter head body 1 in long distance tunneling, the setting of support component is used to support two groups of pushing components and four groups of limiting components, and the setting of two groups of pushing components and four groups of limiting components can assist in installing shield machine cutter head body 1, to avoid displacement of shield machine cutter head body 1 when installing shield machine cutter head body 1.

[0024] Specifically, each group of pushing components includes two electric telescopic rods 403, two moving plates 404 and four slide rods 405, one end of each electric telescopic rod 403 is fixedly connected to the inner wall of one side of mounting groove 401, one side outer surface of each moving plate 404 is fixedly connected to the elongated end of electric telescopic rod 403, the bottom of each two slide rods 405 is fixedly connected to the top of moving plate 404, and each slide rod 405 is slidingly embedded in the upper inner wall of mounting groove 401.

[0025] In this embodiment, the electric telescopic rod 403 can push the movable plate 404 to move. The principle and structure of the electric telescopic rod 403 are common knowledge to those skilled in the art and will not be described in detail here. The model can be selected according to actual usage.

[0026] Specifically, the support component includes multiple support rods 502 and fixing rings 503 . Each support rod 502 is fixedly connected between the reinforcement rod 501 and the shield machine cutter head body 1 . The fixing ring 503 is fixedly connected to one end of the multiple reinforcement rods 501 .

[0027] In this embodiment, a plurality of support rods 502 are used to assist in supporting the shield machine cutter head body 1 , thereby enhancing the torsional rigidity of the shield machine cutter head body 1 , and the fixing ring 503 is provided for installing a pushing component.

[0028] Specifically, each set of pushing components includes a fixed motor 504, a fixed threaded rod 505, a threaded barrel 506 and an auxiliary splint 509. One end of the fixed threaded rod 505 rotates and passes through the inner wall of one side of the fixed ring 503. The threaded barrel 506 is threadedly sleeved on the outer surface of the fixed threaded rod 505. The outer surface of one side of the auxiliary splint 509 is fixedly connected to one end of the threaded barrel 506. The bottom of the fixed motor 504 is fixedly connected to the top of the fixed ring 503, and the output end of the fixed motor 504 is fixedly connected to one end of the fixed threaded rod 505.

[0029] In this embodiment: the fixed motor 504 drives the fixed threaded rod 505 to rotate, and through the limiting component, the threaded cylinder 506 can push the auxiliary splint 509 to move, and the fixed motor 504 can be reversed. The principle and structure of the fixed motor 504 are common knowledge to those skilled in the art and will not be introduced in detail here. Its model can be selected according to actual usage.

[0030] Specifically, each set of limiting components includes a connecting rod 507 and a connecting tube 508, one end of the connecting rod 507 is fixedly connected to the inner wall of one side of the fixing ring 503, one end of the connecting tube 508 is fixedly connected to the outer surface of one side of the auxiliary splint 509, and the connecting tube 508 is slidably sleeved on the outer surface of the connecting rod 507.

[0031] In this embodiment, the connecting rod 507 and the connecting cylinder 508 are used for limiting the position. The auxiliary splint 509 can move stably through the arrangement of the connecting rod 507 and the connecting cylinder 508.

[0032] Specifically, the top of the fixing ring 503 is threadedly connected with a plurality of fixing screws 510 .

[0033] In this embodiment, a plurality of fixing screws 510 can fix the shield machine cutter head to the shield machine.

[0034] In use, when the cutter 402 needs to be disassembled and replaced, the electric telescopic rod 403 is turned on to push the moving plates 404 to move, and the two moving plates 404 can fix the cutter 402 in the mounting groove 401; when the shield machine cutter body 1 needs to be installed, the fixing ring 503 is sleeved on the main shaft of the shield machine, the fixing motor 504 is turned on, the fixing motor 504 drives the fixed threaded rod 505 to rotate, through the limiting of the connecting rod 507 and the connecting barrel 508, the threaded barrel 506 can push the auxiliary clamping plates 509 to move until the two auxiliary clamping plates 509 are clamped on the main shaft of the shield machine, then the shield machine cutter body 1 is fixed on the shield machine through the fixed screw rod 510, the shield machine cutter body 1 can be installed, and the shield machine cutter body 1 is prevented from being displaced when the shield machine cutter body 1 is installed; in use, the cutter 402 is arranged and distributed on the shield machine cutter body 1 in a progressive manner, so that the outer side and the inner side of the cutter 402 are balanced in stress in small-radius tunneling, the wear of the cutter 402 is reduced, and the service life is prolonged; and through the arrangement of the reinforcing rods 501 and the supporting rods 502, the lateral force and the torque change generated in turning tunneling can be effectively responded to, and the shield machine cutter body 1 is prevented from being deformed or failing in long-distance tunneling.

[0035] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A shield machine cutterhead suitable for small radius excavation, characterized in that: include: A shield machine cutterhead body (1); a plurality of discharge openings (2) are provided on the top of the shield machine cutterhead body (1); a center cutter (3) is fixedly embedded at the center of the top of the shield machine cutterhead body (1); A fixing mechanism (4), wherein the fixing mechanism (4) is provided with a plurality of groups, each group of the fixing mechanism (4) comprises a cutter (402) and two groups of pushing components, a plurality of mounting grooves (401) are provided on the top of the shield machine cutter head body (1), each group of pushing components is arranged in the mounting grooves (401), and the cutter (402) is arranged on the pushing components; An auxiliary mechanism (5) includes a plurality of reinforcing rods (501), a supporting component, two groups of pushing components, and four groups of limiting components. One end of each reinforcing rod (501) is fixedly connected to the bottom of the shield machine cutter head body (1). The supporting component is arranged on the reinforcing rod (501), each group of pushing components is arranged on the supporting component, and each group of limiting components is arranged on the pushing component.

2. The shield machine cutterhead suitable for small radius excavation according to claim 1, characterized in that: Each group of the pushing components includes two electric telescopic rods (403), two movable plates (404) and four sliding rods (405), one end of each electric telescopic rod (403) is fixedly connected to the inner wall of one side of the installation groove (401), the outer surface of one side of each movable plate (404) is fixedly connected to the extended end of the electric telescopic rod (403), the bottom of each two sliding rods (405) is fixedly connected to the top of the movable plate (404), and each sliding rod (405) is slidably embedded in the upper inner wall of the installation groove (401).

3. The shield machine cutterhead suitable for small radius excavation according to claim 2, characterized in that: The support component comprises a plurality of support rods (502) and a fixing ring (503), each of the support rods (502) is fixedly connected between a reinforcement rod (501) and a shield machine cutter head body (1), and the fixing ring (503) is fixedly connected to one end of the plurality of reinforcement rods (501).

4. The shield machine cutterhead suitable for small radius excavation according to claim 1, characterized in that: Each group of the pushing components comprises a fixed motor (504), a fixed threaded rod (505), a threaded barrel (506) and an auxiliary splint (509); one end of the fixed threaded rod (505) rotates and passes through the inner wall of one side of the fixed ring (503); the threaded barrel (506) is threadedly sleeved on the outer surface of the fixed threaded rod (505); one outer surface of one side of the auxiliary splint (509) is fixedly connected to one end of the threaded barrel (506); the bottom of the fixed motor (504) is fixedly connected to the top of the fixed ring (503); and the output end of the fixed motor (504) is fixedly connected to one end of the fixed threaded rod (505).

5. The shield machine cutterhead suitable for small radius excavation according to claim 4, characterized in that: Each set of the limiting components includes a connecting rod (507) and a connecting tube (508), one end of the connecting rod (507) is fixedly connected to the inner wall of one side of the fixing ring (503), one end of the connecting tube (508) is fixedly connected to the outer surface of one side of the auxiliary splint (509), and the connecting tube (508) is slidably sleeved on the outer surface of the connecting rod (507).

6. The shield machine cutterhead suitable for small radius excavation according to claim 5, characterized in that: The top of the fixing ring (503) is threadedly connected with a plurality of fixing screws (510).

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