Conveying equipment based on earth pressure balance shield tunneling machine

Abstract

Conveying equipment based on an earth pressure balance shield tunneling machine comprises a conveyor body, a transmission belt, a power assembly, a dust falling assembly, a cleaning and scraping assembly, a mirror cleaning assembly and a support, the transmission belt is arranged below the discharging end of the conveyor body through the support, and a nozzle can be driven to rotate back and forth along an annular guide rail along with an arc-shaped sliding block by arranging the power assembly; and by arranging the angle adjusting assembly, when the rotating angles of the arc-shaped sliding blocks on the annular guide rail are the same, the spraying angle of the nozzle can also be changed, then the spraying range is increased, the situation of fixed-point spraying dust removal cannot occur, and the dust removal effect is enhanced. The brush on the inner side and the sliding block on the outer side are connected through the arranged rotary guide rail, and the brush is driven by the sliding block to move on the rotary guide rail, so that soil adhered to the observation window is cleaned through the brush, and the observation definition in the operation process is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of conveying equipment, in particular to a conveying equipment based on a soil pressure balance shield machine. BACKGROUND

[0002] With the development and rise of the urban rail transit industry scale, the construction speed is continuously improved, and the supporting facilities are also continuously improved. Tunnel shield construction is the main means of urban subway construction and underground passage construction. The automatic conveying device of the soil pressure balance shield machine is a key component, which is mainly responsible for conveying the cut soil from the inside of the shield machine to the outside. The existing conveying device basically meets the needs, but still has some shortcomings. First, the spiral conveying part of the existing automatic conveying device of the soil pressure balance shield machine is mostly closed. During operation, the inside of the soil residue is observed through the observation window at the top. However, the inner wall of the observation window is easy to stick to the soil, which affects the clarity of observation. Second, the conveying belt of the existing conveying device will stick to the soil when conveying the soil, which affects the conveying efficiency. At the same time, long-term sticking can cause corrosion to the conveying belt, reducing the service life of the conveying belt. Third, the existing conveying device will produce dust at the docking place due to the falling of the soil. The dust diffused into the surrounding air will affect the construction environment and the physical and mental health of the workers. Therefore, it is necessary to design an automatic conveying device for the soil pressure balance shield machine.

[0003] The application number CN202121684689.6 discloses an underground building waste conveying equipment with atomizing dust removal function, which comprises a first conveying line and a second conveying line. The outer surface of the first conveying line is fixed with a first supporting rod, and the outer surface of the conveying box is fixed with a second supporting rod.

[0004] The above-mentioned prior art can achieve the purpose of dust removal through the spray head. However, the spray angle of the spray head of the above-mentioned prior art cannot be adjusted, and the spray range is limited. SUMMARY

[0005] The purpose of the present application is to provide a conveying equipment based on a soil pressure balance shield machine to solve the problems raised in the background art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: A conveying equipment based on a soil pressure balance shield machine, comprising a conveyor body, a transmission belt, a power assembly, a dust removal assembly, a cleaning assembly, a mirror cleaning assembly and a support, the lower part of the discharge end of the conveyor body is provided with a transmission belt through the support, wherein: The power assembly is arranged on the conveyor body; The dust falling assembly comprises an annular guide rail, an arc-shaped sliding block, a nozzle and an angle adjusting assembly, the annular guide rail is arranged on a support, the discharge end of the conveyor body is located in the middle of the annular guide rail, the arc-shaped sliding block is movably arranged on the annular guide rail and is power-connected with the power assembly, the nozzle is rotatably arranged on the arc-shaped sliding block, the water outlet of the nozzle faces the discharge end of the conveyor body, the annular guide rail is provided with the angle adjusting assembly for adjusting the spraying angle of the nozzle, and the angle adjusting assembly is power-connected with the arc-shaped sliding block. The transmission belt is movably provided with a cleaning scraping assembly for cleaning foreign matters, and the cleaning scraping assembly is power-connected with the power assembly.

[0007] Preferably, the power assembly comprises gear I, a lever, gear II, gear III and a gear ring, two gear Is are rotatably arranged on the conveyor body and are in engagement with each other, one of the gear Is is connected with the power output end of the motor, the gear I is provided with at least two levers in the circumferential direction of the gear I, the gear II is rotatably arranged on the conveyor body, the toothed part of the gear II faces the lever, the gear III is fixedly sleeved on the gear II, the gear ring is in engagement with the gear III, and the gear ring is fixedly sleeved on the arc-shaped sliding block.

[0008] Preferably, the angle adjusting assembly comprises a bevel ring, a movable rod, a spring, a ball and a ring driving assembly, the upper end of the bevel ring is bevel-shaped, the bevel ring is rotatably arranged inside the annular guide rail and is located below the arc-shaped sliding block, the movable rod is movably arranged on the arc-shaped sliding block through the spring, one end of the movable rod is connected with the nozzle through a spherical pair, the other end of the movable rod is provided with a ball and is in contact with the bevel end of the bevel ring through the ball, and the annular guide rail is provided with the ring driving assembly for driving the bevel ring to rotate.

[0009] Preferably, the ring driving assembly comprises a support shaft, an upper gear and a lower gear, the support shaft is rotatably arranged on the annular guide rail, one end of the support shaft is provided with the upper gear through a one-way bearing, the other end of the support shaft is fixedly sleeved with the lower gear, the outer side of the arc-shaped sliding block is provided with an outer gear I, the upper gear is in engagement with the outer gear I, the outer side of the bevel ring is provided with an outer gear II, and the outer gear II is in engagement with the lower gear.

[0010] Preferably, the cleaning scraping assembly comprises an incomplete bevel gear, a speed reducer, a bevel gear, a rotating shaft, a cam, an annular friction plate and a cleaning roller, the incomplete bevel gear is power-connected with the gear III through the speed reducer, the rotating shaft is rotatably arranged on the housing of the transmission belt, the annular friction plate is arranged between the rotating shaft and the housing of the transmission belt, one end of the rotating shaft is fixedly sleeved with the bevel gear and the bevel gear is in engagement with the incomplete bevel gear, the other end of the rotating shaft is fixedly sleeved with the cam, the cleaning roller is movably arranged at the lower end of the transmission belt, and the cam faces the cleaning roller.

[0011] Preferably, the mirror cleaning assembly comprises two rotary guide rails, two sliding blocks, two magnets and two brushes, the two rotary guide rails are arranged on the conveyor body and are arranged on both sides of the observation window, the two sliding blocks are movably arranged in the two rotary guide rails respectively, the sliding blocks are provided with the magnets, the magnets on the two sliding blocks are opposite in polarity, the sliding blocks inside the conveyor body are provided with the brushes, and the brushes are in contact with the observation window.

[0012] Compared with the prior art, the present application has the following advantages: The disclosed conveying equipment based on a soil pressure balance shield machine comprises a power assembly, which can drive the nozzle to reciprocatingly rotate along the annular guide rail with the arc-shaped sliding block, and an angle adjusting assembly, which can change the spray angle of the nozzle when the arc-shaped sliding block rotates on the annular guide rail at the same angle, thereby increasing the spray range and avoiding the situation of fixed-point dust removal, and thus enhancing the dust removal effect.

[0013] The rotary guide rail is arranged to connect the inner brush and the outer sliding block, the brush is driven by the sliding block to move on the rotary guide rail, thereby cleaning the adhered soil on the observation window, and ensuring the observation clarity during operation.

[0014] The power assembly and the cleaning assembly are arranged to enable the cleaning roller to be intermittently attached to the lower end of the transmission belt, thereby cleaning the residual soil on the conveyor belt. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic view of the overall structure of the present application; Figure 2 It is a three-dimensional schematic view of the dust removal assembly in the present application; Figure 3 It is a three-dimensional schematic view of the power assembly in the present application; Figure 4 It is a three-dimensional schematic view of the internal angle adjusting assembly in the present application; Figure 5 It is a three-dimensional schematic view of the angle adjusting assembly in the present application; Figure 6 It is a three-dimensional schematic view of the shifting rod in the power assembly; Figure 7 It is a three-dimensional schematic view of the Figure 1 It is a three-dimensional schematic view of the A part in the present application; Figure 8 It is a three-dimensional schematic view of the present application from the top; Figure 9 It is a three-dimensional schematic view of the mirror cleaning assembly in the present application.

[0016] In the figure: 1 conveyor body, 2 transmission belt, 3 power assembly, 4 dust falling assembly, 5 cleaning scraping assembly, 6 mirror cleaning assembly, 7 support, 31 gear I, 32 shifting lever, 33 gear II, 34 gear III, 35 gear ring, 41 annular guide rail, 42 arc-shaped slider, 43 nozzle, 44 angle adjusting assembly, 51 incomplete bevel gear, 52 speed reducer, 53 bevel gear, 54 rotating shaft, 55 cam, 56 annular friction plate, 57 cleaning roller, 61 rotary guide rail, 62 slider, 63 magnet, 64 brush, outer gear ring I 421, 441 inclined circular ring, 442 movable rod, 443 spring, 444 ball, 445 circular ring driving assembly, outer gear ring II 4411, 4451 support shaft, 4452 upper gear, 4453 lower gear. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0018] Embodiment: Please refer to Figures 1 to 9 The present application provides a technical solution: A conveying device based on a soil pressure balance shield machine, comprising a conveyor body 1, a transmission belt 2, a power assembly 3, a dust falling assembly 4, a cleaning scraping assembly 5, a mirror cleaning assembly 6, and a support 7, wherein the lower part of the discharge end of the conveyor body 1 is provided with the transmission belt 2 through the support 7. The power assembly 3 is arranged on the conveyor body 1. The dust falling assembly 4 comprises an annular guide rail 41, an arc-shaped slider 42, a nozzle 43, and an angle adjusting assembly 44, the annular guide rail 41 is fixedly installed on the support 7, the discharge end of the conveyor body 1 is located in the middle of the annular guide rail 41, the arc-shaped slider 42 is movably arranged on the annular guide rail 41 and is power-connected with the power assembly 3, the arc-shaped slider 42 can make reciprocating motion on the annular guide rail 41 under the power action of the power assembly 3, the nozzle 43 is rotatably installed on the arc-shaped slider 42, the nozzles 43 are arranged in the circumferential direction of the arc-shaped slider 42, the water outlets of the nozzles 43 face the discharge end of the conveyor body 1, the process of the conveyor body 1 conveying to the transmission belt 2 can be sprayed and dusted by arranging the nozzles 43, the annular guide rail 41 is provided with the angle adjusting assembly 44 for adjusting the spraying angle of the nozzles 43, the angle adjusting assembly 44 can drive the nozzles 43 to reciprocate on the arc-shaped slider 42, the angle adjusting assembly 44 is power-connected with the arc-shaped slider 42; the arc-shaped slider 42 can drive the angle adjusting assembly 44 to act.

[0019] The transmission belt 2 is movably provided with a cleaning scraping assembly 5 for cleaning foreign matters, and the cleaning scraping assembly 5 is connected with the power assembly 3.

[0020] As a preferred embodiment, the power assembly 3 comprises gear I 31, a push rod 32, gear II 33, gear III 34 and gear ring 35, two gear I 31 are meshed with each other and are rotatably installed on the conveyor body 1, one of the gear I 31 is connected with the power output end of the motor, and the other gear I 31 is rotatably installed on the conveyor body 1, the gear I 31 is provided with at least two push rods 32 in the circumferential direction of the gear I 31, the gear II 33 is rotatably installed on the conveyor body 1, the toothed part of the gear II 33 is opposite to the push rod 32, the rotation of the gear I 31 will drive the toothed part of the gear II 33 through the push rod 32, thereby driving the gear II 33 to rotate, since the two gear I 31 are meshed with each other, the rotation directions of the two gear I 31 are opposite, thereby making the rotation directions of the two gear I 31 driving the gear II 33 opposite, so that the gear I 31 drives the gear II 33 to make forward and reverse rotation, the gear III 34 is fixedly sleeved on the gear II 33, the gear II 33 can drive the gear III 34 to make synchronous forward and reverse rotation, the gear ring 35 is meshed with the gear III 34, the gear III 34 can drive the gear ring 35 to make forward and reverse rotation, and the gear ring 35 is fixedly sleeved on the arc-shaped sliding block 42. The gear ring 35 can drive the arc-shaped sliding block 42 to make forward and reverse rotation.

[0021] As a preferred embodiment, the distance between the two adjacent push rods 32 on the gear I 31 is the same as the distance between the two adjacent toothed parts of the gear II 33, wherein the matching parameters and design parameters of the push rod 32 and the gear II 33 are similar to the gear meshing, so as to avoid the motion interference.

[0022] As a preferred embodiment, the angle adjusting assembly 44 comprises a bevel ring 441, a movable rod 442, a spring 443, a ball 444 and a ring driving assembly 445, the upper end of the bevel ring 441 is bevel-shaped and is rotatably installed inside the annular guide rail 41 below the arc-shaped slider 42, the upper end of the bevel ring 441 is bevel-shaped and the lower end is flat, the bevel ring 441 can rotate 360 degrees inside the annular guide rail 41, the movable rod 442 is movably arranged on the arc-shaped slider 42 through the spring 443, the movable rod 442 is a vertical moving pair on the arc-shaped slider 42, the spring 443 is in a compressed state, one end of the movable rod 442 is connected to the nozzle 43 through a ball pair, the other end is provided with the ball 444 and is in contact with the bevel end of the bevel ring 441 through the ball 444, the friction between the movable rod 442 and the bevel end of the bevel ring 441 can be reduced by arranging the ball 444, so that when the arc-shaped slider 42 rotates, the bevel ring 441 will not be driven to rotate by the friction between the ball 444 and the bevel end of the bevel ring 441, and the ring driving assembly 445 is arranged on the annular guide rail 41 to drive the bevel ring 441 to rotate. When the arc-shaped slider 42 rotates on the annular guide rail 41, the ball 444 will always be in contact with the bevel end of the bevel ring 441 under the elastic force of the spring 443, so that the movable rod 442 will rise and fall in the vertical direction while the arc-shaped slider 42 rotates on the annular guide rail 41, and then the movable rod 442 will push the nozzle 43 to rotate in the vertical direction of the arc-shaped slider 42, so as to adjust the spraying angle of the nozzle 43. If the bevel ring 441 is fixed, the spraying angle of the nozzle 43 can be adjusted, but the spraying angle of the nozzle 43 is the same when the arc-shaped slider 42 rotates at the same angle on the annular guide rail 41. Therefore, the bevel ring 441 can be driven to rotate with the rotation of the arc-shaped slider 42 by arranging the ring driving assembly 445, so that the spraying angle of the nozzle 43 will change when the arc-shaped slider 42 rotates at the same angle on the annular guide rail 41, thereby increasing the spraying range and avoiding the situation of fixed-point dust removal, thereby enhancing the dust removal effect.

[0023] As a preferred embodiment, the circular ring driving assembly 445 comprises a support shaft 4451, an upper gear 4452 and a lower gear 4453, the support shaft 4451 is rotatably installed on the annular guide rail 41, one end of the support shaft 4451 is provided with the upper gear 4452 through a one-way bearing, and the other end is provided with the lower gear 4453, the outer side of the arc-shaped sliding block 42 is provided with an outer gear I 421, the upper gear 4452 is engaged with the outer gear I 421, when the arc-shaped sliding block 42 rotates on the annular guide rail 41, the upper gear 4452 is driven to rotate through the outer gear I 421, and then the lower gear 4453 is driven to rotate in one direction through the support shaft 4451 and the one-way bearing, the outer side of the bevel circular ring 441 is provided with an outer gear II 4411, and the outer gear II 4411 is engaged with the lower gear 4453. The lower gear 4453 rotates in one direction to drive the bevel circular ring 441 to rotate through the outer gear II 4411. The upper gear 4452 is installed through a one-way bearing, so that it can drive the lower gear 4453 to rotate in the locked state of the one-way bearing, and when the upper gear 4452 reverses, it can drive the lower gear 4453 to rotate through the support shaft 4451, thereby achieving the effect of driving the bevel circular ring 441 to rotate in one direction.

[0024] As a preferred embodiment, the cleaning scraper assembly 5 comprises an incomplete bevel gear 51, a speed reducer 52, a bevel gear 53, a rotating shaft 54, a cam 55, an annular friction plate 56 and a cleaning roller 57, the incomplete bevel gear 51 is connected with the gear III 34 through the speed reducer 52, and the speed reducer 52 is arranged to avoid the incomplete bevel gear 51 from rotating too fast due to the gear III 34 rotating too fast. The rotating shaft 54 is rotatably installed on the housing of the transmission belt 2, and the annular friction plate 56 is arranged between the rotating shaft 54 and the housing of the transmission belt 2. The annular friction plate 56 can increase the friction force between the rotating shaft 54 and the housing of the transmission belt 2. One end of the rotating shaft 54 is provided with the bevel gear 53, and the other end is provided with the cam 55. The cleaning roller 57 is vertically arranged at the lower end of the transmission belt 2, and the cam 55 faces the cleaning roller 57. The rotating shaft 54 rotates to drive the cam 55 to rotate, and then drives the cleaning roller 57 to vertically move at the lower end of the transmission belt 2, so that the cleaning roller 57 can intermittently adhere to the belt at the lower end of the transmission belt 2, thereby cleaning the residual soil on the transmission belt 9. Intermittent adjustment of the position of the cleaning roller 57 can reduce the wear of the cleaning roller 57 and increase the service life of the cleaning roller 57.

[0025] The arrangement of the annular friction plate 56 increases the resistance of the rotating shaft 54, so that the resistance of the rotating shaft 54 is greater than the resultant force of the cleaning roller 57 and the soil on the transmission belt 2 on the cleaning roller 57, so that the cleaning roller 57 can stably clean the soil on the transmission belt 2.

[0026] As a preferred embodiment, the mirror cleaning assembly 6 comprises a rotary guide rail 61, a sliding block 62, a magnet 63 and a brush 64, two rotary guide rails 61 are arranged on the conveyor body 1 and are arranged on both sides of the observation window, one of the rotary guide rails 61 is arranged on the outer end surface of the conveyor body 1, and the other is arranged inside the conveyor body 1, the two sliding blocks 62 are oppositely arranged in the two rotary guide rails 61, the magnet 63 is arranged on the sliding block 62, the magnetic poles of the two magnets 63 on the sliding blocks 62 are opposite, and the brush 64 is arranged on the side of the sliding block 62 inside the conveyor body 1 and is in contact with the observation window.

[0027] The working principle of the present application is as follows: In use, the conveyor body 1 receives the material conveyed by the shield machine conveying end and then transfers the material to the conveyor belt 2. During the conveying process, the motor drives the gear I 31 to rotate, which in turn drives the gear II 33 through the lever 32, and then drives the gear III 34 to rotate. Since the two gears I 31 are meshed with each other, the rotating directions of the two gears I 31 are opposite, thereby the levers 32 on the two gears I 31 alternately drive the gear II 33. At this time, the gear II 33 reciprocates in forward and reverse directions, and the gear III 34 synchronously reciprocates in forward and reverse directions, and the gear ring 35 further reciprocates in forward and reverse directions, thereby the arc-shaped sliding block 42 can reciprocate in forward and reverse directions through the gear ring 35.

[0028] At this time, the nozzle 43 sprays water to remove dust, and the arc-shaped sliding block 42 drives the nozzle 43 to reciprocate in forward and reverse directions along the inclined circular ring 441. At this time, the movable rod 442 is always in contact with the inclined end of the inclined circular ring 441 under the elastic force of the spring 443, thereby the movable rod 442 drives the nozzle 43 to reciprocate along with the arc-shaped sliding block 42, and the purpose of adjusting the spraying angle of the nozzle 43 is achieved.

[0029] When the arc-shaped sliding block 42 reciprocates on the ring-shaped guide rail 41, only the upper gear 4452 drives the lower gear 4453 to rotate in one direction, thereby the inclined circular ring 441 rotates. At this time, the angle of the arc-shaped sliding block 42 on the ring-shaped guide rail 41 is the same, and the spraying angle of the nozzle 43 also changes, thereby the spraying range increases, and the dust removal effect is enhanced.

[0030] The gear III 34 drives the incomplete bevel gear 51 to rotate through the speed reducer 52, the incomplete bevel gear 51 drives the bevel gear 535 to rotate through the rotating shaft 54, thereby the cleaning roller 57 intermittently moves up and down, and the residual soil on the conveyor belt 9 can be cleaned.

[0031] When the observation window on the conveyor body 1 is stuck with dirt, the slider 62 on the outside of the conveyor body 1 is pushed by the magnet 63 to drive the slider 62 on the inside of the conveyor body 1 to drive the brush 64 to clean the observation window stuck with dirt.

[0032] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely divergences and modifications and not limitations of the scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A conveying device based on earth pressure balance shield tunneling machine, comprising a conveyor body (1), a transmission belt (2), a power assembly (3), a dust reduction assembly (4), a cleaning assembly (5), a mirror cleaning assembly (6) and a bracket (7), the transmission belt (2) is arranged below the discharge end of the conveyor body (1) through the bracket (7), characterized in that: the power assembly (3) is arranged on the conveyor body (1); the dust reduction assembly (4) comprises an annular guide rail (41), an arc-shaped sliding block (42), a nozzle (43) and an angle adjusting assembly (44), the annular guide rail (41) is arranged on the bracket (7), the discharge end of the conveyor body (1) is located in the middle of the annular guide rail (41), the arc-shaped sliding block (42) is movably arranged on the annular guide rail (41) and is power-connected with the power assembly (3), the nozzle (43) is rotatably arranged on the arc-shaped sliding block (42), the water outlet of the nozzle (43) faces the discharge end of the conveyor body (1), the annular guide rail (41) is provided with the angle adjusting assembly (44) for adjusting the spraying angle of the nozzle (43), and the angle adjusting assembly (44) is power-connected with the arc-shaped sliding block (42); the cleaning assembly (5) for cleaning foreign matters is movably arranged on the transmission belt (2), and the cleaning assembly (5) is power-connected with the power assembly (3). The power assembly (3) comprises gear I (31), a lever (32), gear II (33), gear III (34) and a gear ring (35), two gear I (31) are rotatably arranged on the conveyor body (1) and are meshed with each other, one of the gear I (31) is connected with the power output end of the motor, at least two levers (32) are arranged on the circumferential surface of the gear I (31), the gear II (33) is rotatably arranged on the conveyor body (1), the tooth part of the gear II (33) faces the lever (32), the gear III (34) is fixedly sleeved on the gear II (33), the gear ring (35) is meshed with the gear III (34), and the gear ring (35) is fixedly sleeved on the arc-shaped sliding block (42). The angle adjusting assembly (44) comprises a bevel ring (441), a movable rod (442), a spring (443), a ball (444) and a ring driving assembly (445), the upper end of the bevel ring (441) is bevel-shaped and is rotatably arranged inside the annular guide rail (41) and below the arc-shaped sliding block (42), the movable rod (442) is movably arranged on the arc-shaped sliding block (42) through the spring (443), one end of the movable rod (442) is connected to the nozzle (43) through a spherical pair, the other end of the movable rod (442) is provided with the ball (444) and is in contact with the bevel end of the bevel ring (441) through the ball (444), and the ring driving assembly (445) for driving the bevel ring (441) to rotate is arranged on the annular guide rail (41). ​ 2. A conveyor apparatus for use with an earth pressure balance shield machine according to claim 1, characterized in that: ​ 3. The conveyor apparatus for use in a ground pressure balanced shield tunneling machine according to claim 1, characterized in that: ​ 4. A conveyor apparatus for use with a ground pressure balanced shield machine according to claim 3, characterized in that: The circular ring driving assembly (445) comprises a support shaft (4451), an upper gear (4452) and a lower gear (4453), the support shaft (4451) is rotatably installed on the annular guide rail (41), wherein one end of the support shaft (4451) is provided with the upper gear (4452) through a one-way bearing, and the other end is provided with the lower gear (4453), the outer side of the arc-shaped slider (42) is provided with an outer gear I (421), the upper gear (4452) is engaged with the outer gear I (421), the outer side of the bevel circular ring (441) is provided with an outer gear II (4411), and the outer gear II (4411) is engaged with the lower gear (4453).

5. The conveyor apparatus for use in a ground pressure balanced shield tunneling machine according to claim 3, wherein: The cleaning scraping assembly (5) comprises an incomplete bevel gear (51), a speed reducer (52), a bevel gear (53), a rotating shaft (54), a cam (55), an annular friction plate (56) and a cleaning roller (57), the incomplete bevel gear (51) is connected with the gear III (34) through the speed reducer (52), the rotating shaft (54) is rotatably installed on the shell of the transmission belt (2), wherein the annular friction plate (56) is arranged between the rotating shaft (54) and the shell of the transmission belt (2), one end of the rotating shaft (54) is provided with the bevel gear (53) and the bevel gear (53) is engaged with the incomplete bevel gear (51), the other end of the rotating shaft (54) is provided with the cam (55), the cleaning roller (57) is vertically arranged at the lower end of the transmission belt (2), and the cam (55) faces the cleaning roller (57).

6. A conveyor apparatus for use with a ground pressure balanced shield machine according to claim 3, wherein: The mirror cleaning assembly (6) comprises a rotary guide rail (61), a sliding block (62), a magnet (63) and a brush (64), two rotary guide rails (61) are arranged on the conveyor body (1) and are arranged on both sides of the observation window, two sliding blocks (62) are oppositely arranged in the two rotary guide rails (61), the magnet (63) is arranged on the sliding block (62), the magnets (63) on the two sliding blocks (62) are opposite in polarity, the sliding block (62) inside the conveyor body (1) is provided with a brush (64), and the brush (64) is in contact with the observation window.

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