Efficient and clean TBM (Tunnel Boring Machine) cutter head pneumatic unblocking device

Abstract

The utility model discloses an efficient cleaning TBM (Tunnel Boring Machine) cutter head pneumatic unblocking device, which belongs to the field of unblocking devices and comprises a cutter head, a shield is fixedly connected onto the cutter head, an unblocking mechanism is movably mounted between the shield and the cutter head, and the unblocking mechanism comprises an air cylinder, a girder, a screw rod, a moving seat, a connecting block, an air cannon component, a pneumatic component, a sliding rod and a sliding block. Through the arranged blockage clearing mechanism, when the cutter head is blocked, an air cylinder pushes a girder outwards, a screw on the girder movably rotates, an air cannon assembly and a pneumatic assembly move in a reciprocating mode, a nozzle of the air cannon assembly sprays high-pressure gas to impact the cutter head, static friction force between rock soil and the cutter head is broken through, and the rock soil on the cutter head can conveniently fall down; and a pneumatic mode is used for replacing a high-pressure water gun for flushing, so that the waste of water resources is effectively reduced, and the problem that a water pipe is blocked by impurities due to a large amount of water is avoided.

Description

Technical Field

[0001] The utility model relates to the field of blockage clearing devices, in particular to an efficient and clean pneumatic blockage clearing device for a cutter head of a TBM tunneling machine. Background Art

[0002] Tunnel boring machine (TBM) is a new and advanced tunnel construction machine that uses a rotary cutter to dig, break the surrounding rock in the hole and excavate to form the entire tunnel section. The cutterhead is a component of the tunnel boring machine that breaks rocks and shovels up rock debris. In the prior art, a Chinese utility model patent with a public document number of CN205990916U discloses an integrated water spray device for the cutterhead of a tunnel boring machine. The utility model has a novel structure and strong practicality. It can reduce the failure of the cutterhead water spray system during the construction of the tunnel boring machine, is easy to replace, and has high device reliability.

[0003] The utility model uses water spraying to cool, reduce dust and clean the cutter disc. During the use of the tunnel boring machine, the cutter disc is prone to blockage due to the adhesion of some rocks and soils, wear of the tool, speed mismatch of the propulsion system and other reasons. Flushing the cutter disc by spraying water is currently a commonly used method. However, there is a risk of corrosion of the cutter disc during the process of spraying the cutter disc with a high-pressure water gun, and the flushing device consumes a large amount of water resources, which can easily cause the water pipe to be blocked by impurities, etc., so improvement is needed. Utility Model Content

[0004] The main purpose of the utility model is to provide a highly efficient and clean pneumatic blockage clearing device for the cutter head of a TBM tunneling machine, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A highly efficient and clean pneumatic blockage clearing device for a TBM boring machine cutterhead comprises a cutterhead, a shield is fixedly connected to the cutterhead, a blockage clearing mechanism is movably installed between the shield and the cutterhead, the blockage clearing mechanism comprises a cylinder, a beam, a screw, a movable seat, a connecting block, an air cannon assembly, a pneumatic assembly, a sliding bar and a sliding block, the cylinder is fixedly connected to a position between the cutterhead and the shield, the output shaft of the cylinder is fixedly connected to the beam, the screw is movably installed at an inner position of the beam, the movable seat is movably installed on the beam, the bottom surface of the movable seat is fixedly connected to a connecting block, the connecting block is movably installed with the screw, the air cannon assembly is fixedly connected to the movable seat, the pneumatic assembly is fixedly connected to the air cannon assembly, the sliding bar is fixedly connected to a position below the beam, the sliding block is fixedly connected to the beam, and the sliding bar is movably installed with the sliding bar.

[0007] Preferably, the clearing mechanism further includes a No. 1 connecting plate, which is fixedly connected between the cutter disc and the shield, and the two ends of the No. 1 connecting plate are respectively fixedly connected to the outer shell of the cutter disc and the shield, and the cylinder is fixedly connected to the No. 1 connecting plate.

[0008] Preferably, the blockage clearing mechanism also includes a bearing, a mounting plate and a stepper motor, the rod bodies on both sides of the screw are movably mounted on the beam through bearings, the mounting plate is fixedly connected to one side of the beam, the stepper motor is fixedly connected to the mounting plate, and the output shaft of the stepper motor is fixedly connected to one end of the screw.

[0009] Preferably, the blockage clearing mechanism further includes a slide groove and a screw hole, the slide groove is fixedly connected to the movable seat, the movable seat is movably installed with the beam through the slide groove, the screw hole is opened on the connecting block, and the connecting block is movably installed with the screw rod through the screw hole.

[0010] Preferably, the blockage clearing mechanism further comprises a nozzle, and the nozzle is fixedly connected to a side position of the air cannon assembly.

[0011] Preferably, the clearing mechanism further includes a support base and a sliding hole, the support base is fixedly connected to the inner side of the shield, the sliding hole is provided on the slider, the beam is slidably connected to the support base, and the slider is movably mounted on the slide rod through the sliding hole.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] In the utility model, through the clearing mechanism, when the cutter disc is blocked, the cylinder pushes the beam outward, the screw on the beam rotates flexibly, the air cannon assembly and the pneumatic assembly move back and forth, the nozzle of the air cannon assembly sprays high-pressure gas to impact the cutter disc, breaking the static friction between the rock and soil and the cutter disc, causing the rock and soil on the cutter disc to fall off, thereby completing the clearing work of the cutter disc;

[0014] In the utility model, by providing a clearing mechanism, a pneumatic method is used to replace high-pressure water gun flushing, which effectively reduces the waste of water resources and avoids the problem of impurity blockage in water pipes caused by a large amount of water. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the blockage clearing mechanism of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the beam and the movable seat of the utility model;

[0018] Figure 4 It is a schematic diagram of the connection structure of the slide bar and the beam of the utility model.

[0019] In the figure: 1. cutter disc; 2. shield; 3. clearing mechanism; 301. No. 1 connecting plate; 302. cylinder; 303. beam; 304. screw; 305. bearing; 306. mounting plate; 307. stepping motor; 308. moving seat; 309. slide groove; 310. connecting block; 311. screw hole; 312. air cannon assembly; 313. pneumatic assembly; 314. nozzle; 315. support base; 316. slide rod; 317. slide block; 318. slide hole. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] like Figure 1 , Figure 2 and Figure 4 As shown, a highly efficient and clean pneumatic clearing device for a TBM boring machine cutter head comprises a cutter head 1, a shield 2 is fixedly connected to the cutter head 1, a clearing mechanism 3 is movably installed between the shield 2 and the cutter head 1, the clearing mechanism 3 comprises a cylinder 302, a beam 303, a screw 304, a movable seat 308, a connecting block 310, an air cannon assembly 312, a pneumatic assembly 313, a sliding bar 316 and a sliding block 317, the cylinder 302 is fixedly connected to a position between the cutter head 1 and the shield 2, the output shaft of the cylinder 302 is fixedly connected to the beam 303, the sliding bar 316 is fixedly connected to a position below the beam 303, the sliding block 317 is fixedly connected to the beam 303, and the sliding block 317 is movably installed with the sliding bar 316, the clearing mechanism 3 also comprises a No. 1 connecting plate 301, the No. 1 connecting plate 301 is fixedly connected to a position between the cutter head 1 and the shield 2, the No. 1 connecting plate 301 The two ends are fixedly connected to the outer shell of the cutter disc 1 and the shield 2 respectively, the cylinder 302 is fixedly connected to the No. 1 connecting plate 301, and the clearing mechanism 3 also includes a supporting base 315 and a sliding hole 318. The supporting base 315 is fixedly connected to the inner side of the shield 2, and the sliding hole 318 is provided on the slider 317. The beam 303 is slidably connected to the supporting base 315, and the slider 317 is movably installed with the sliding rod 316 through the sliding hole 318. The output shaft of the cylinder 302 pushes the beam 303 outward, so that the beam 303 and the air cannon assembly 312 and the pneumatic assembly 313 on the beam 303 are moved out from between the cutter disc 1 and the shield 2, and the air cannon assembly 312 is moved to the front position of the cutter disc 1, and the high-pressure gas is sprayed through the nozzle 314 of the air cannon assembly 312 to impact the cutter disc 1, so that the rock and soil on the cutter disc 1 are easy to fall off, and the cutter disc 1 is efficiently cleaned.

[0022] like Figure 1 , Figure 2 and Figure 3 As shown, the screw 304 is movably installed at the inner side of the beam 303, the moving seat 308 is movably installed on the beam 303, the bottom surface of the moving seat 308 is fixedly connected with a connecting block 310, the connecting block 310 and the screw 304 are movably installed, the air cannon assembly 312 is fixedly connected to the moving seat 308, the pneumatic assembly 313 is fixedly connected to the air cannon assembly 312, the clearing mechanism 3 also includes a bearing 305, a mounting plate 306 and a stepping motor 307, the rod bodies on both sides of the screw 304 are movably installed with the beam 303 through the bearings 305, the mounting plate 306 is fixedly connected to one side of the beam 303, the stepping motor 307 is fixedly connected to the mounting plate 306, and the output shaft of the stepping motor 307 is fixedly connected to one end of the screw 304, the clearing mechanism 3 also includes a slide groove 309 and a screw hole 311, The slide groove 309 is fixedly connected to the movable seat 308, and the movable seat 308 is movably installed with the beam 303 through the slide groove 309. The screw hole 311 is opened on the connecting block 310, and the connecting block 310 is movably installed with the screw 304 through the screw hole 311. The clearing mechanism 3 also includes a nozzle 314, and the nozzle 314 is fixedly connected to the side position of the air cannon assembly 312. The output shaft of the stepper motor 307 rotates forward and reverse alternately, so that the screw 304 rotates forward and reverse alternately, and the movable seat 308 moves back and forth left and right, so that the distance between the nozzle 314 and the cutter disc 1 is far or near. The nozzle 314 is away from the cutter disc 1, so that the shock wave formed by the high-pressure gas has a wider coverage range. The nozzle 314 is close to the cutter disc 1, so that the shock wave formed by the high-pressure gas has a small coverage range but stronger power, thereby better removing the rock and soil on the cutter disc 1.

[0023] It should be noted that the utility model is an efficient and clean pneumatic blockage clearing device for the cutterhead of a TBM. When the cutterhead 1 is clogged by adhered rock and soil, the cylinder 302 is started to push out the shield 2 and the beam 303, the air cannon assembly 312 and the pneumatic assembly 313 between the cutterhead 1. When the tunnel boring machine is digging normally, the beam 303, the air cannon assembly 312 and the pneumatic assembly 313 are stored between the shield 2 and the cutterhead 1 and are in contact with the cutterhead 1. There is a certain distance between the cutter head 1 and the cutter head 1, which does not affect the rotation and rock breaking of the cutter head 1. When the cutter head 1 is blocked, the cylinder 302 pushes the beam 303 outward, and the beam 303 slides outward on the support base 315. The slider 317 moves outward on the slide rod 316 through the slide hole 318, thereby moving the air cannon assembly 312 and the pneumatic assembly 313 on the beam 303 to the front position of the cutter head 1, and the stepper motor 307 is started, so that the screw 304 rotates back and forth alternately. The connecting block 310 of the movable seat 308 reciprocates on the screw rod 304 through the screw hole 311, and the slide groove 309 of the movable seat 308 is movably installed with the beam 303 to ensure that the movable seat 308 does not deflect, so that the movable seat 308 is easy to move in a straight line left and right. In this process, the nozzle 314 continuously sprays high-pressure gas. As the movable seat 308 moves away from the cutter disc 1, the coverage of the sprayed high-pressure gas increases, but the impact power decreases. As the nozzle 314 approaches the cutter disc 1, the coverage of the sprayed high-pressure gas decreases, but the power of the shock wave increases, thereby continuously impacting the cutter disc 1, breaking the static friction between the rock and soil and the cutter disc 1, making it easy for the rock and soil to fall down from the cutter disc 1, thereby completing the clearing work of the cutter disc 1, and replacing the high-pressure water gun to impact the cutter disc 1 in a pneumatic way can effectively reduce the waste of water resources and avoid the problem of impurities clogging the water pipe formed by a large amount of water.

[0024] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. It is only a preferred embodiment of the utility model, and its description is more specific and detailed, but it cannot be understood as limiting the scope of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments. The embodiments can be changed, modified, replaced and deformed without departing from the principle and purpose of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An efficient and clean pneumatic blockage clearing device for a TBM cutterhead, comprising a cutterhead (1), a shield (2) being fixedly connected to the cutterhead (1), characterized in that: A clearing mechanism (3) is movably installed between the shield (2) and the cutter disc (1), and the clearing mechanism (3) comprises a cylinder (302), a beam (303), a screw (304), a movable seat (308), a connecting block (310), an air cannon assembly (312), a pneumatic assembly (313), a sliding rod (316) and a sliding block (317). The cylinder (302) is fixedly connected to a position between the cutter disc (1) and the shield (2), an output shaft of the cylinder (302) is fixedly connected to the beam (303), and the screw (304) is movably installed at an inner side of the beam (303). The movable seat (308) is movably mounted on the beam (303); a connecting block (310) is fixedly connected to the bottom surface of the movable seat (308); the connecting block (310) and the screw (304) are movably mounted; the air cannon assembly (312) is fixedly connected to the movable seat (308); the pneumatic assembly (313) is fixedly connected to the air cannon assembly (312); the sliding bar (316) is fixedly connected to a position below the beam (303); the sliding block (317) is fixedly connected to the beam (303); and the sliding block (317) and the sliding bar (316) are movably mounted.

2. The highly efficient and clean pneumatic blockage clearing device for the cutter head of a TBM tunneling machine according to claim 1 is characterized in that: The blockage clearing mechanism (3) further comprises a No. 1 connecting plate (301), wherein the No. 1 connecting plate (301) is fixedly connected between the cutter disc (1) and the shield (2), and the two ends of the No. 1 connecting plate (301) are respectively fixedly connected to the outer shell of the cutter disc (1) and the shield (2), and the cylinder (302) is fixedly connected to the No. 1 connecting plate (301).

3. The efficient and clean pneumatic blockage clearing device for the cutter head of a TBM tunneling machine according to claim 2 is characterized by: The blockage clearing mechanism (3) further comprises a bearing (305), a mounting plate (306) and a stepping motor (307); the rod bodies on both sides of the screw rod (304) are movably mounted on the beam (303) via the bearings (305); the mounting plate (306) is fixedly connected to one side of the beam (303); the stepping motor (307) is fixedly connected to the mounting plate (306); and the output shaft of the stepping motor (307) is fixedly connected to one end of the screw rod (304).

4. The efficient and clean pneumatic blockage clearing device for the cutter head of a TBM tunneling machine according to claim 3 is characterized by: The blockage clearing mechanism (3) further comprises a slide groove (309) and a screw hole (311); the slide groove (309) is fixedly connected to the movable seat (308); the movable seat (308) is movably mounted on the beam (303) via the slide groove (309); the screw hole (311) is provided on the connecting block (310); the connecting block (310) is movably mounted on the screw rod (304) via the screw hole (311).

5. The efficient and clean pneumatic blockage clearing device for the cutter head of a TBM tunneling machine according to claim 4 is characterized by: The blockage clearing mechanism (3) further comprises a nozzle (314), and the nozzle (314) is fixedly connected to a side position of the air cannon assembly (312).

6. The efficient and clean pneumatic blockage clearing device for the cutter head of a TBM tunneling machine according to claim 5 is characterized by: The blockage clearing mechanism (3) further comprises a support base (315) and a sliding hole (318); the support base (315) is fixedly connected to the inner side of the shield (2); the sliding hole (318) is provided on a slider (317); the beam (303) is slidably connected to the support base (315); and the slider (317) is movably mounted on the slide rod (316) through the sliding hole (318).

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