Shield tunneling machine duct piece cleaning device

Abstract

The utility model discloses a duct piece cleaning device of a shield tunneling machine, which belongs to the technical field of shield tunneling machines and comprises a duct piece cleaning assembly of the shield tunneling machine. A limiting support assembly; a moving propulsion assembly; the cleaning disc assembly is moved; a screw rod piece and a positioning rod penetrate through the sweeping disc piece, and the sweeping disc piece linearly moves in an inner cavity of a segment splicing cavity; the junction box grooves are symmetrically formed in the outer wall of the peripheral side of the sweeping disc piece; the arc-shaped cleaning brushes are symmetrically arranged on the outer wall of the peripheral side of the cleaning disc piece and located between the two junction box grooves, and the rotary cleaning brush heads are distributed on the outer wall of the peripheral side of the cleaning disc piece at equal intervals. The two front-back reciprocating arc-shaped cleaning brushes move back and forth on the circumferential side of the cleaning disc piece in a reciprocating mode to clean the inner wall of the duct piece splicing cavity, and the multiple rotary cleaning brush heads are used for rotating to clean the inner wall of the duct piece splicing cavity at a fixed point. The inner wall of the segment splicing cavity is cleaned comprehensively and carefully, and no dead angle is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of shield machines, in particular to a shield machine segment cleaning device. Background Art

[0002] The shield method is an important underground tunnel construction technology, particularly suitable for tunneling in soft soil. With the acceleration of urbanization, the development and utilization of underground space has become increasingly important. Due to its high construction efficiency and minimal impact on the surrounding environment, the shield method has been widely used in the construction of urban subways, highway tunnels, drainage pipelines, and other projects.

[0003] During shield tunneling, cleaning the segment splicing chamber is crucial to ensuring the quality of subsequent construction. Existing shield machine segment splicing chamber cleaning technologies often suffer from the following issues: Traditional manual cleaning or simple mechanical cleaning equipment often only have a single cleaning method: a single-directional brush cleaning method. This is inefficient in cleaning the segment splicing chamber, especially for larger chambers, as it is difficult to reach every corner, leaving dead corners and allowing dust and impurities to remain.

[0004] After searching, the existing Chinese patent publication number: CN115055457A is a pipe segment cleaning equipment, including: a vehicle body, which can move in the excavation channel; an arc reciprocating drive mechanism, which is installed on the vehicle body and whose driving end is reciprocated along the arc when started; a cleaning mechanism, which is used to clean the pipe segment; and a radial adjustment mechanism, which is installed between the driving end and the cleaning mechanism to adjust the radial distance of the cleaning mechanism relative to the driving end.

[0005] The cited patent documents also have the same problem. The cleaning equipment often only has a single cleaning method: that is, the single-direction cleaning of the brush, which cannot efficiently complete the cleaning task of the pipe segment splicing chamber, especially for a larger chamber. It is difficult to reach every corner, and it is easy to leave dead corners, resulting in dust and impurities remaining. Utility Model Content

[0006] The purpose of the utility model is to provide a shield machine segment cleaning device to solve the problems raised in the background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a shield machine segment cleaning device, comprising:

[0008] The shield machine segment cleaning assembly is composed of a segment splicing chamber formed by splicing multiple segments together, and a cable junction box is symmetrically arranged on the inner wall of the segment splicing chamber;

[0009] The position limiting support assembly includes a U-shaped fixing plate clamped on the outer wall of one end of the pipe segment splicing chamber, and a running bracket component with one end arranged below the U-shaped fixing plate and the other end extending to the deep inner cavity of the pipe segment splicing chamber, and the running bracket component is supported on the inner bottom wall of the pipe segment splicing chamber;

[0010] The moving propulsion assembly includes a screw member installed between a U-shaped fixed card plate and the other end of a traveling support member extending deep into the inner cavity of the segment splicing chamber, and positioning rods symmetrically distributed on both sides of the screw member. A servo motor for driving the screw member to rotate is installed on the outer wall of the U-shaped fixed card plate;

[0011] The movable cleaning disc assembly includes a cleaning disc penetrated by a screw and a positioning rod and linearly movable in the inner cavity of the pipe segment splicing chamber, a terminal box groove symmetrically provided on the outer wall of the cleaning disc, a back-and-forth reciprocating arc-shaped cleaning brush symmetrically provided on the outer wall of the cleaning disc and located between the two terminal box grooves, and a plurality of rotating cleaning brush heads equidistantly distributed on the outer wall of the cleaning disc;

[0012] Among them, the two said back-and-forth reciprocating arc-shaped cleaning brushes are driven back and forth by the cylinder part on the peripheral side of the cleaning disc and move back and forth along the moving route of the cleaning disc to clean the inner wall of the pipe segment splicing chamber. The multiple said rotary cleaning brush heads then follow the back-and-forth reciprocating arc-shaped cleaning brushes to rotate and fix the cleaning points of the inner wall of the pipe segment splicing chamber.

[0013] Preferably, an arcuate movable travel groove is symmetrically provided on the outer wall of the cleaning disc and located between the two junction box grooves, and an arcuate movable bottom plate is fitted and engaged in each of the arcuate movable travel grooves;

[0014] Each of the back-and-forth reciprocating arc-shaped cleaning brushes is fixed on the arc-shaped outer wall of each arc-shaped movable bottom plate.

[0015] In this embodiment, each of the arcuate travel grooves is symmetrically mounted with a plurality of positioning rods extending through the arcuate travel base. The cylinder members are symmetrically distributed between the plurality of positioning rods and mounted on the inner wall of the arcuate travel groove. The piston rods of the cylinder members push and pull the arcuate travel base to reciprocate within the arcuate travel groove, and the arcuate travel base is positioned and moved by the positioning rods.

[0016] In this solution, preferably, both ends of each arc-shaped movable travel groove close to the junction box groove are provided with dust-proof slopes to allow dust to slide down and prevent dust accumulation.

[0017] Preferably, the arc-shaped movable travel groove is located on the side facing away from the support block and is located on the outer wall of the cleaning disc and is equidistantly provided with a plurality of motor embedded mounting holes between the two junction box grooves. A motor for driving the rotary cleaning brush head to rotate is provided in each motor embedded mounting hole.

[0018] Preferably, the output shaft of each motor is connected to the bottom end of the adjacent rotary cleaning brush head, and the bottom end of the rotary cleaning brush head extends into the embedded mounting hole of the motor.

[0019] Preferably, proximity switches are symmetrically installed on the inner walls of both sides of each arc-shaped movable stroke groove. When the piston rod of the cylinder drives the arc-shaped movable base plate to extend to touch the proximity switch, the piston rod of the cylinder drives the arc-shaped movable base plate to retract.

[0020] This solution is preferred, in which both ends of the U-shaped fixed clamp are connected to the outer wall of the pipe segment splicing chamber by locking bolts, and the walking bracket component includes a support plate welded to the middle position of the bottom surface of the U-shaped fixed clamp, two first support legs symmetrically welded to the bottom surface of the support plate, a support block extending to the deep inner cavity of the pipe segment splicing chamber, and a second support leg symmetrically welded to the bottom surface of the support block.

[0021] Preferably, the bottom end of each of the first supporting leg and the second supporting leg is provided with a running wheel, and the running wheel is supported by running on the inner bottom wall of the segment splicing chamber.

[0022] The beneficial effects of the utility model are:

[0023] 1) The shield machine segment cleaning device, by combining the design of a back-and-forth reciprocating arc-shaped cleaning brush and a rotating cleaning brush head, can comprehensively and meticulously clean the inner wall of the segment splicing chamber to ensure that there are no dead angles. The back-and-forth reciprocating arc-shaped cleaning brush is driven by a cylinder to effectively remove dust and impurities on the inner wall of the segment splicing chamber, while the rotating cleaning brush head can remove stubborn stains at a fixed point, improving cleaning efficiency.

[0024] 2) The shield machine segment cleaning device uses a servo motor to drive a screw to control the linear movement of the cleaning disc. The entire cleaning process requires almost no human intervention, greatly improving work efficiency. The combination of the positioning rod and the screw ensures that the cleaning disc remains stable during movement, reducing the problem of incomplete cleaning due to shaking. The junction box groove is designed to ensure that the cables of the cable junction box will not be entangled or damaged when the cleaning disc starts to move, thereby improving cleaning safety. It not only improves the cleaning efficiency and effect of the shield machine segment splicing chamber, but also has the advantages of high degree of automation, strong flexibility, and easy maintenance, significantly improving the quality and efficiency of shield construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural diagram of the utility model;

[0026] Figure 2 This is a structural diagram of the hoisting-guided unloading silo of the utility model;

[0027] Figure 3 This is a structural diagram of the segment clamping template of the utility model;

[0028] Figure 4 This is a structural schematic diagram of the pipe segment clamping plate of the utility model;

[0029] Figure 5 This is a schematic diagram of the installation structure of the buffer air spring of the present utility model.

[0030] Description of reference numerals:

[0031] In the figure: 1. Shield machine segment cleaning assembly; 2. Segment parts; 3. Segment splicing chamber; 4. Cable junction box; 5. U-shaped fixing clamp; 6. Locking bolt; 7. Servo motor; 8. First support foot rod; 9. Travel wheel; 10. Limit support assembly; 11. Mobile propulsion assembly; 12. Mobile cleaning disc assembly; 13. Screw member; 14. Positioning rod; 15. Support plate; 16. Junction box groove; 17. Support block; 18. Sealed bearing; 19. Second support foot rod; 20. Cleaning disc member; 21. Back and forth reciprocating arc-shaped cleaning brush; 22. Rotary cleaning brush head; 23. Arc-shaped moving stroke groove; 24. Arc-shaped moving bottom plate; 25. Positioning stroke rod; 26. Cylinder member; 27. Anti-dust slope; 28. Proximity switch; 29. ​​Motor embedded mounting hole. DETAILED DESCRIPTION

[0032] The following will be combined with the embodiments to clearly and completely describe the technical solutions 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 those skilled in the art without creative work shall fall within the scope of protection of the present invention.

[0033] This embodiment provides Figure 1-Figure 5 The shield machine segment cleaning device shown includes: a shield machine segment cleaning assembly 1, a limiting support component 10, a movable propulsion component 11, and a movable cleaning disc component 12.

[0034] In this embodiment, the shield machine segment cleaning assembly 1 is composed of a plurality of segment parts 2 spliced ​​together to form a segment splicing chamber 3, and a cable junction box 4 is symmetrically arranged on the inner wall of the segment splicing chamber 3; the cable junction box 4 is installed on the inner wall of the segment splicing chamber 3, and is used to connect the power lines and signal lines of electrical components to ensure power supply and signal transmission.

[0035] In this embodiment, the position limiting support assembly 10 includes a U-shaped fixing plate 5 clamped on the outer wall of one end of the segment splicing chamber 3, and a running support component with one end disposed below the U-shaped fixing plate 5 and the other end extending deep into the inner cavity of the segment splicing chamber 3. The running support component is supported on the inner bottom wall of the segment splicing chamber 3.

[0036] In this embodiment, the mobile propulsion assembly 11 includes a screw member 13 mounted between the U-shaped fixed plate 5 and the other end of the traveling support member extending deep into the inner cavity of the segment splicing chamber 3, and positioning rods 14 symmetrically distributed on both sides of the screw member 13. A servo motor 7 for driving the rotation of the screw member 13 is mounted on the outer wall of the U-shaped fixed plate 5; the servo motor 7 is mounted on the U-shaped fixed plate 5 and is used to drive the rotation of the screw member 13, thereby driving the movement of the mobile cleaning disc assembly 12. The screw member 13 is connected to the servo motor 7, and its rotation propels the cleaning disc 20. The positioning rods 14 ensure that the cleaning disc 20 moves in a straight line without deviation.

[0037] In this embodiment, the movable cleaning disc assembly 12 includes a cleaning disc 20, which is penetrated by a screw 13 and a positioning rod 14 and moves linearly within the inner cavity of the pipe segment splicing chamber 3; a terminal box groove 16 symmetrically provided on the outer wall of the cleaning disc 20; a back-and-forth reciprocating curved cleaning brush 21 symmetrically disposed on the outer wall of the cleaning disc 20 and located between the two terminal box grooves 16; and a plurality of rotating cleaning brush heads 22 equidistantly distributed on the outer wall of the cleaning disc 20. The terminal box groove 16 is provided on the outer wall of the cleaning disc 20 and is used to accommodate the cable junction box 4, so that the cleaning disc 20 does not collide with the cable junction box 4 during movement and cleaning. The cleaning disc 20 is guided by the screw 13 and the positioning rod 14 to move linearly within the pipe segment splicing chamber 3, carrying the cleaning brush. The reciprocating arc-shaped cleaning brush 21 is fixed to the arc-shaped movable base plate 24 and is driven by the cylinder 26 to move back and forth in the arc-shaped movable travel groove 23 to clean the inner wall of the pipe segment splicing chamber 3. The rotary cleaning brush head 22 is mounted on the cleaning disc 20 and rotated by the built-in motor to perform fixed-point cleaning on the inner wall of the pipe segment splicing chamber 3.

[0038] In this embodiment, two reciprocating curved cleaning brushes 21 are driven back and forth along the path of the cleaning disc 20 by a cylinder 26, cleaning the inner walls of the segment splicing chamber 3. Multiple rotating cleaning brush heads 22 then follow the reciprocating curved cleaning brushes 21 to perform fixed-point cleaning of the inner walls of the segment splicing chamber 3. The combination of the reciprocating curved cleaning brushes 21 and the rotating cleaning brush heads 22 efficiently removes dust and impurities from the inner walls of the segment splicing chamber 3. The coordinated operation of the servo motor 7, the cylinder 26, and the built-in motor enables the entire cleaning process to be automated, reducing the need for manual intervention. The cleaning disc 20 can be adjusted to accommodate different sizes of segment splicing chambers, increasing the flexibility of the system. The design of the U-shaped fixing plate 5 and the locking bolt 6 allows for quick installation and removal, facilitating maintenance and component replacement.

[0039] In this embodiment, arcuate travel grooves 23 are symmetrically formed on the outer wall of the cleaning disc 20, located between the two terminal box recesses 16. A curved movable base plate 24 fits snugly within each arcuate travel groove 23, and each reciprocating arcuate cleaning brush 21 is secured to the outer wall of each curved movable base plate 24. The arcuate travel grooves 23 are formed on the cleaning disc 20 to accommodate and guide the curved movable base plates 24.

[0040] In this embodiment, each arcuate travel groove 23 is symmetrically mounted with multiple positioning rods 25 that extend through the arcuate travel base 24. Cylinders 26 are symmetrically distributed between the multiple positioning rods 25 and mounted on the inner wall of the arcuate travel groove 23. The piston rods of the cylinders 26 push and pull the arcuate travel base 24 back and forth within the arcuate travel groove 23, and the arcuate travel base 24 is positioned and moved by the positioning rods 25. The positioning rods 25 extend through the arcuate travel base 24, ensuring its linear movement within the arcuate travel groove 23.

[0041] In this embodiment, each arc-shaped movable travel groove 23 is provided with dust-proof slopes 27 at both ends close to the junction box groove 16. Dust can slide down and prevent dust accumulation.

[0042] In this embodiment, the arc-shaped movable travel groove 23 is located on the side facing away from the support block 17 and is located on the outer wall of the cleaning disc 20 and is equidistantly provided with a plurality of motor embedded mounting holes 29 between the two junction box grooves 16. A motor for driving the rotary cleaning brush head 22 to rotate is provided in each motor embedded mounting hole 29.

[0043] In this embodiment, the output shaft of each motor is connected to the bottom end of the adjacent rotary cleaning brush head 22 , and the bottom end of the rotary cleaning brush head 22 extends into the motor embedded mounting hole 29 .

[0044] In this embodiment, proximity switches 28 are symmetrically installed on the inner walls of both sides of each arc-shaped movable stroke groove 23. When the piston rod of the cylinder part 26 drives the arc-shaped movable base plate 24 to extend until it touches the proximity switch 28, the piston rod of the cylinder part 26 drives the arc-shaped movable base plate 24 to retract. The proximity switch 28 is installed on the inner wall of the arc-shaped movable stroke groove 23 and is used to detect the position of the reciprocating arc-shaped cleaning brush 21 and control the action of the cylinder part 26. The proximity switch 28 is used to detect the position of the piston rod. A proximity switch 28 is installed at each end of the cylinder. When the piston rod reaches the end point, the proximity switch will be triggered and send a signal to the PLC. The connection line of the proximity switch 28 is on the outer wall of the cleaning disc 20 and is appropriately wired according to the actual application scenario. The operating principle of the piston rod of the cylinder part 26 refers to the existing public technology or is adjusted according to the actual application scenario.

[0045] In this embodiment, both ends of the U-shaped fixing plate 5 are connected to the outer wall of the segment splicing chamber 3 by means of locking bolts 6, and the traveling support component includes a support plate 15 welded to the middle position of the bottom surface of the U-shaped fixing plate 5, two first supporting legs 8 symmetrically welded to the bottom surface of the support plate 15, a support block 17 extending to the deep inner cavity of the segment splicing chamber 3, and a second supporting leg 19 symmetrically welded to the bottom surface of the support block 17. The U-shaped fixing plate 5 is fixed to one end of the segment splicing chamber 3 by means of locking bolts 6, and serves as a part of the limiting support assembly 10, playing a supporting and fixing role. A sealed bearing 18 is embedded in the interior of the support block 17, and the end of the screw member 13 away from the servo motor 7 has an interference fit with the inner ring of the sealed bearing 18.

[0046] In this embodiment, each first support leg 8 and second support leg 19 is equipped with a running wheel 9 at its bottom end. The running wheel 9 travels along the inner bottom wall of the segment splicing chamber 3. The first support leg 8 is welded to the bottom surface of the support plate 15, which is mounted on the bottom of the U-shaped fixing bracket 5, jointly supporting the weight of the entire device. The running wheels 9 are mounted at the bottom ends of the first support leg 8 and the second support leg 19, ensuring smooth movement of the entire device within the segment splicing chamber 3.

[0047] In this embodiment, a PLC for controlling the opening and closing of various components is installed outside the U-shaped fixed clamp 5, and the PLC model can be selected according to actual needs.

[0048] Working principle: The shield machine segment cleaning device starts the servo motor 7 to drive the screw member 13 to rotate. The screw member 13 is connected to the cleaning disc 20. The rotation of the screw member 13 causes the cleaning disc 20 to move linearly along the positioning rod 14. The cleaning disc 20 starts to move. The junction box groove 16 ensures that the cables of the cable junction box 4 will not be entangled or damaged. The back-and-forth reciprocating arc cleaning brush 21 is in the initial position, waiting for the cleaning instruction. When the cleaning disc 20 moves into place, the cylinder member 26 starts to push the arc moving base plate 24 to move back and forth in the arc moving stroke groove 23. The arc moving base plate 24 drives the back-and-forth reciprocating arc cleaning brush 21 to move back and forth along the moving path of the cleaning disc 20 to clean the inner wall of the segment splicing chamber 3. The proximity switch 28 detects the position of the back-and-forth reciprocating arc cleaning brush 21 and triggers the piston rod of the cylinder member 26 to move in the opposite direction when it reaches the specified position, so that the cleaning brush returns to its original position.

[0049] After the back-and-forth reciprocating arc-shaped cleaning brush 21 completes cleaning, the built-in motor starts to drive the rotary cleaning brush head 22 to rotate. The rotary cleaning brush head 22 performs fixed-point cleaning on the inner wall of the pipe segment splicing chamber 3 to further remove residual dust and impurities.

[0050] The cleaning disc 20 continues to move in a straight line along the positioning rod 14, repeating the arc cleaning and fixed-point cleaning processes until the entire inner wall of the pipe segment splicing chamber 3 is cleaned. During the movement, the cleaning disc 20 maintains a straight and stable movement through the screw member 13 and the positioning rod 14.

[0051] The U-shaped fixed card plate 5 in the limit support assembly 10 is fixed to the outer wall of one end of the pipe segment splicing chamber 3 by a locking bolt 6, providing a support point. The support plate 15, the first support foot rod 8, the support block 17 and the second support foot rod 19 together constitute a walking bracket component, which supports the weight of the entire device and ensures its smooth movement in the pipe segment splicing chamber 3. The walking wheel 9 is installed at the bottom end of the first support foot rod 8 and the second support foot rod 19 to ensure that the entire device is supported by walking on the inner bottom wall of the pipe segment splicing chamber 3. The anti-dust slope 27 is set at both ends of the arc-shaped moving stroke groove 23, which helps the swept dust to slide down and prevent dust from accumulating again.

[0052] When the inner wall of the entire segment splicing chamber 3 is completely cleaned, the servo motor 7 stops rotating and the entire cleaning process ends.

[0053] The above description is merely a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the form disclosed herein and should not be construed as excluding other embodiments. Instead, the present invention can be used in various other combinations, modifications, and environments and can be modified within the scope of the concept described herein through the above teachings or techniques or knowledge in the relevant field. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention shall be protected by the claims appended hereto.

Claims

1. A shield machine segment cleaning device, characterized in that: include: A shield machine segment cleaning assembly (1) comprises a segment splicing chamber (3) formed by splicing a plurality of segment pieces (2) together, and a cable junction box (4) is symmetrically arranged on the inner wall of the segment splicing chamber (3); A position limiting support assembly (10) comprises a U-shaped fixed clamping plate (5) clamped on the outer wall of one end of the pipe segment splicing chamber (3) and a running bracket component with one end arranged below the U-shaped fixed clamping plate (5) and the other end extending to the deep inner cavity of the pipe segment splicing chamber (3), and the running bracket component is supported on the inner bottom wall of the pipe segment splicing chamber (3); A moving propulsion assembly (11) comprises a screw member (13) installed between the U-shaped fixed card plate (5) and the other end of the traveling support member extending deep into the inner cavity of the pipe segment splicing chamber (3), and positioning rods (14) symmetrically distributed on both sides of the screw member (13), wherein a servo motor (7) for driving the screw member (13) to rotate is installed on the outer wall of the U-shaped fixed card plate (5); A movable cleaning disc assembly (12) comprises a cleaning disc (20) penetrated by a screw member (13) and a positioning rod (14) and linearly movable in an inner cavity of a pipe segment splicing chamber (3), a terminal box groove (16) symmetrically arranged on a peripheral outer wall of the cleaning disc (20), a front-back reciprocating arc-shaped cleaning brush (21) symmetrically arranged on a peripheral outer wall of the cleaning disc (20) and located between two terminal box grooves (16), and a plurality of rotating cleaning brush heads (22) equidistantly arranged on a peripheral outer wall of the cleaning disc (20); The two back-and-forth reciprocating arc-shaped cleaning brushes (21) are driven by the cylinder (26) to reciprocate along the moving path of the cleaning disc (20) on the peripheral side of the cleaning disc (20) to clean the inner wall of the pipe segment splicing chamber (3), and the plurality of rotating cleaning brush heads (22) then follow the back-and-forth reciprocating arc-shaped cleaning brushes (21) to rotate and clean the inner wall of the pipe segment splicing chamber (3) at a fixed point.

2. A shield machine segment cleaning device according to claim 1, characterized in that: The outer wall of the cleaning disc (20) is symmetrically provided with arc-shaped movable travel grooves (23) between the two junction box grooves (16), and an arc-shaped movable bottom plate (24) is fitted and connected in each of the arc-shaped movable travel grooves (23); Each of the back-and-forth reciprocating arc-shaped cleaning brushes (21) is fixed on the arc-shaped outer wall of each arc-shaped movable bottom plate (24).

3. A shield machine segment cleaning device according to claim 2, characterized in that: A plurality of positioning travel rods (25) penetrating the arc-shaped moving bottom plate (24) are symmetrically installed in each of the arc-shaped moving travel grooves (23), and the cylinder parts (26) are symmetrically distributed between the plurality of positioning travel rods (25) and installed on the inner wall of the arc-shaped moving travel groove (23).

4. A shield machine segment cleaning device according to claim 3, characterized in that: Dust-proof slopes (27) are provided at both ends of each arc-shaped movable travel groove (23) close to the junction box groove (16).

5. The shield machine segment cleaning device according to claim 4, characterized in that: The arc-shaped movable travel groove (23) is provided with a plurality of motor embedded mounting holes (29) at equal intervals on the side of the outer wall of the cleaning disc (20) and located on the side facing away from the support block (17) and between the two junction box grooves (16). A motor for driving the rotary cleaning brush head (22) to rotate is provided in each motor embedded mounting hole (29).

6. The shield machine segment cleaning device according to claim 5, characterized in that: The output shaft of each motor is connected to the bottom end of the adjacent rotary cleaning brush head (22), and the bottom end of the rotary cleaning brush head (22) extends into the motor embedded mounting hole (29).

7. The shield machine segment cleaning device according to claim 6, characterized in that: Proximity switches (28) are symmetrically mounted on the inner walls of both sides of each arc-shaped movable travel groove (23). When the piston rod of the cylinder member (26) drives the arc-shaped movable base plate (24) to extend until it touches the proximity switch (28), the piston rod of the cylinder member (26) drives the arc-shaped movable base plate (24) to retract.

8. The shield machine segment cleaning device according to claim 7, characterized in that: Both ends of the U-shaped fixed card plate (5) are connected to the outer wall of the pipe segment splicing chamber (3) through locking bolts (6), and the walking bracket component includes a support plate (15) welded to the middle position of the bottom surface of the U-shaped fixed card plate (5), two first support legs (8) symmetrically welded to the bottom surface of the support plate (15), a support block (17) extending to the deep inner cavity of the pipe segment splicing chamber (3), and a second support leg (19) symmetrically welded to the bottom surface of the support block (17).

9. The shield machine segment cleaning device according to claim 8, characterized in that: A running wheel (9) is installed at the bottom end of each of the first supporting foot rods (8) and the second supporting foot rods (19), and the running wheel (9) is supported by running on the inner bottom wall of the pipe segment splicing chamber (3).

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