Anti-gushing structure of spiral conveyor of shield tunneling machine

Abstract

The invention relates to the technical field of switches, in particular to an anti-gushing structure of a spiral conveyor of a shield tunneling machine, which comprises a spiral assembly, a driving assembly and a gate assembly, the driving assembly is detachably connected with a spiral shaft of the spiral assembly through a connecting shaft I, and the gate assembly is positioned at the lower end of the right side of the spiral assembly and close to the tail end of the spiral shaft; according to the anti-gushing structure of the spiral conveyor of the shield tunneling machine, when the sensor collects that the soil pressure is increased, the gate assembly is shortened through the hydraulic push rod, the arc-shaped plate is driven to anticlockwise around the second connecting shaft, the arc-shaped plate is driven to be opened, and the arc-shaped plate is connected with the inner film through the fourth connecting rod; the inner film performs diameter-expanding deformation motion along the circle center of the section of the connecting cylinder along with opening of the arc-shaped plates so as to prevent soil from spewing when flowing through the connecting cylinder, and the inner film performs diameter-expanding motion along with opening of the circle center of the section of the connecting cylinder along with opening of the arc-shaped plates so as to fill the space reserved between opening of the adjacent arc-shaped plates. And soil flowing and falling in the screw conveyor is restrained in a space defined by the inner film, so that the soil is prevented from splashing.

Description

Technical Field

[0001] The invention relates to the technical field of screw conveyors of shield machines, in particular to a screw conveyor anti-surge structure of a shield machine. Background Art

[0002] At present, during the excavation process of the shield machine, the existing soil pressure control measures are single. The soil pressure sensor is set to a certain value. When the pressure in the soil bin suddenly increases, the screw machine will suddenly rotate rapidly to discharge soil to reach the set value of the soil pressure sensor. For thinner strata, this will cause the screw machine to erupt.

[0003] The existing screw conveyor rear gate often adopts double gates, which have the advantages of controllable gate opening, alternate opening, and reduced slag spraying pressure, but there are the following problems:

[0004] 1. Large pieces of drifting gravel or consolidated soil enter the screw conveyor and get stuck in the gate, hindering normal opening and closing. In severe cases, it causes the drive system to overload and shut down.

[0005] 2. Clay forms a "mud cake" at the gate, increasing the risk of blockage and requiring frequent shutdowns for cleaning.

[0006] Therefore, we propose a shield machine's screw conveyor anti-surge structure. Summary of the Invention

[0007] A technical problem to be solved by this application is that: the existing soil pressure control measures are single, and the soil pressure sensor is set to a certain value. When the pressure in the soil bin suddenly increases, the screw conveyor will suddenly rotate quickly to discharge soil to reach the set value of the soil pressure sensor. For thinner strata, this will cause the screw conveyor to gush; large pieces of floating gravel or consolidated soil enter the screw conveyor and get stuck at the gate, hindering normal opening and closing. In severe cases, it will cause the drive system to overload and shut down; clay forms a "mud cake" at the gate, increasing the risk of blockage and requiring frequent shutdown for cleaning.

[0008] In order to solve the above technical problems, an embodiment of the present application provides a screw conveyor anti-surge structure for a shield machine, including a spiral assembly, a drive assembly, and a gate assembly. The drive assembly is detachably connected to the spiral shaft of the spiral assembly through connecting shaft 1. The gate assembly is located at the lower right end of the spiral assembly near the tail end of the spiral shaft. The gate assembly is fixedly connected to the outer shell 1 of the spiral assembly through a connecting tube. The gate assembly is shortened or extended by a hydraulic push rod, driving the arc plate to rotate counterclockwise or clockwise around connecting shaft 2, driving the arc plate to open or close. The gate assembly connects the arc plate to the inner membrane through connecting rod 4. As the arc plate opens or closes, the inner membrane expands or contracts along the center of the cross-section of the connecting tube.

[0009] In some embodiments, the spiral assembly includes a shell 1 with an opening at the left end, a spiral shaft arranged inside the shell 1, blades arranged on the spiral shaft, and a sensor 1 arranged on the upper inner wall and the lower inner wall of the shell 1.

[0010] In some embodiments, the driving assembly includes a motor fixedly connected to the right end of the connecting shaft 1, and a housing 2 that contains the connecting shaft 1 and the motor.

[0011] In some embodiments, the gate assembly includes a connecting tube, an arc square rod arranged below the connecting tube, an arc plate fixedly connected to the bottom surface of the arc square rod, and an inner membrane. The connecting tube is connected to the arc square rod and the arc plate through side plate one, connecting rod one, and connecting shaft two.

[0012] In some embodiments, the gate assembly also includes side plate two arranged on the outside of side plate one, a connecting plate arranged below side plate two, side plate three arranged at the lower end of the connecting plate, connecting shaft three arranged in the middle of side plate three, a hydraulic push rod arranged on connecting shaft three, side plate four arranged on the outer surface of the arc plate, connecting rod two fixed to the hydraulic push rod, connecting shaft four hingedly connected to connecting shaft four, a splint arranged on the lower end surface of the connecting tube, connecting rod three passing through the reserved hole at the corresponding position of the inner membrane, connecting rod four arranged at the lower end of the arc plate, and sensor two arranged on the inner wall of the connecting tube.

[0013] In some embodiments, the upper end of the inner membrane is arranged between the splints, and a connecting rod three is arranged in the middle of the splint. The connecting rod four passes through the reserved holes at the corresponding positions of the inner membrane to connect the arc plate and the inner membrane, so that the lower end of the inner membrane can expand and contract as the arc plate opens and closes.

[0014] In some embodiments, there are four connecting rods 1 and connecting shafts 2, the connecting rods 1 are evenly distributed in a circular array on the upper end surface of the arc square rod, and the connecting shafts 2 are evenly distributed in a circular array along with the side plate 1 on the outer surface of the connecting tube.

[0015] In some embodiments, the number of side plates 2 is four, the number of connecting plates is four, the number of side plates 3 is four, the number of connecting shafts 3 is four, and the number of hydraulic push rods and connecting rods 2 is four.

[0016] In some embodiments, the number of side panels four is four, the number of connecting shafts four is four, and the side panels four and connecting shafts four are evenly distributed on the outer surface of the arc-shaped plate in a circular array.

[0017] In some embodiments, the inner membrane is made of a flexible material with good deformation effect, and the inner wall of the inner membrane is smooth.

[0018] The present invention has at least the following beneficial effects:

[0019] 1. When the sensor detects that the soil pressure is increasing, the gate assembly shortens through the hydraulic push rod, driving the arc plate to rotate counterclockwise around the connecting axis 2, driving the arc plate to open, and connecting the arc plate to the inner membrane through the connecting rod 4. As the arc plate opens, the inner membrane expands and deforms along the center of the cross section of the connecting tube to prevent gushing when the soil flows through the connecting tube.

[0020] 2. The inner membrane expands as the arc plate opens, connecting the center of the cross section of the cylinder to fill the space left between the adjacent arc plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic cross-sectional view of the overall structure of the present invention;

[0023] Figure 3 This is an overall schematic diagram of the gate assembly of the present invention;

[0024] Figure 4 This is a schematic diagram of the gate assembly from another perspective of the present invention;

[0025] Figure 5 This is a schematic top view of the gate assembly of the present invention;

[0026] Figure 6 for Figure 5 A in the middle is an enlarged schematic diagram;

[0027] Figure 7 This is a bottom view of the gate assembly of the present invention;

[0028] Figure 8 for Figure 7 Enlarged view of point B in the middle;

[0029] Figure 9 This is a schematic structural diagram of the gate of the present invention in an open state;

[0030] Figure 10 This is a schematic diagram of the gate assembly of the present invention in the open state.

[0031] In the figure: 100-screw assembly; 200-drive assembly; 300-gate assembly; 101-housing one; 102-screw shaft; 103-blade; 104-sensor one; 201-connecting shaft one; 202-motor; 203-housing two; 301-connecting cylinder; 302-arc square rod; 303-arc plate; 304-inner membrane; 305-side plate one; 306-connecting rod one; 307-connecting shaft two; 308-side plate two; 309-connecting plate; 310-side plate three; 311-connecting shaft three; 312-hydraulic push rod; 313-side plate four; 314-connecting shaft four; 315-connecting rod two; 316-clamp; 317-connecting rod three; 318-connecting rod four; 319-sensor two. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] Example 1, please refer to Figure 1-10 The present invention provides a technical solution: a shield machine screw conveyor anti-surge structure, including a spiral assembly 100, a drive assembly 200, and a gate assembly 300. The drive assembly 200 is detachably connected to the spiral shaft 102 of the spiral assembly 100 through a connecting shaft 1 201. The gate assembly 300 is located at the lower right end of the spiral assembly 100 near the tail end of the spiral shaft 102. The gate assembly 300 is fixedly connected to the outer shell 101 of the spiral assembly 100 through a connecting cylinder 301. The gate assembly 300 shortens and extends through a hydraulic push rod 312, driving the curved plate 303 to rotate counterclockwise and clockwise around the connecting shaft 2 307, driving the curved plate 303 to open and close. The gate assembly 300 connects the curved plate 303 to the inner membrane 304 through a connecting rod 4 318. As the curved plate 303 opens and closes, the inner membrane 304 expands or contracts along the center of the cross section of the connecting cylinder 301.

[0034] In Example 2, the spiral assembly 100 includes a shell 101 with an opening at the left end, a spiral shaft 102 disposed inside the shell 101, blades 103 disposed on the spiral shaft 102, and a sensor 104 disposed on the upper inner wall and the lower inner wall of the shell 101.

[0035] Specifically, the spiral assembly 100 includes a shell 101, a spiral shaft 102, a blade 103, and a sensor 104. The left end of the shell 101 is open, the spiral shaft 102 is arranged inside the shell 101, and the blade 103 is spirally arranged on the spiral shaft 102. The blade 103 is arranged on the upper inner wall and the lower inner wall near the entrance of the left end of the shell 101 to measure the soil pressure at the entrance of the shell 101. A partition is set at the connection between the right end of the spiral shaft 102 and the connecting shaft 201, and a circular hole is opened in the center of the partition. The diameter of the circular hole is the same as that of the connecting shaft 201.

[0036] In Example 3, the drive assembly 200 includes a motor 202 fixedly connected to the right end of the first connecting shaft 201, and a second housing 203 that encloses the first connecting shaft 201 and the motor 202. Specifically, the drive assembly 200 includes the first connecting shaft 201, the motor 202, and the second housing 203. The right end of the first connecting shaft 201 is fixedly connected to the motor 202, and the motor 202 is disposed within the second housing 203.

[0037] Example 4, the gate assembly 300 includes a connecting tube 301, an arc square rod 302 arranged below the connecting tube 301, an arc plate 303 fixedly connected to the bottom surface of the arc square rod 302, and an inner membrane 304. The connecting tube 301 is connected to the arc square rod 302 and the arc plate 303 through a side plate 1 305, a connecting rod 1 306, and a connecting shaft 2 307.

[0038] Specifically, the gate assembly 300 includes a connecting cylinder 301, an arc square rod 302, an arc plate 303, an inner membrane 304, a side plate 1 305, a connecting rod 1 306, and a connecting shaft 2 307. The arc square rod 302 is arranged below the connecting cylinder 301. The arc square rod 302 is in the shape of a quarter circle. Four arc square rods 302 can be assembled into a ring. The inner diameter of the ring assembled by the four arc square rods 302 is equal to the outer diameter of the connecting cylinder 301. The upper end of the arc plate 303 is fixedly connected to the bottom surface of the arc square rod 302. The arc plate 303 is a trapezoidal plate with a larger upper portion and a smaller lower portion. The four arc plates 303 can be assembled into a circular tubular object with a larger upper part and a smaller lower part. The connecting tube 301 is connected to the arc square rod 302 and the arc plate 303 through the side plate 1 305, the connecting rod 1 306, and the connecting shaft 2 307. The side plate 1 305 is arranged on the outer wall of the connecting tube 301. There are four groups of side plates 1 305, and each group of side plates 1 305 has two side plates 1. A connecting shaft 2 307 is arranged between every two side plates 1 305. The upper end of the connecting rod 1 306 is hingedly connected to the connecting shaft 2 307. The connecting rod 1 306 rotates around the connecting shaft 2 307. The lower end of the connecting rod 1 306 is fixedly connected to the arc square rod 302.

[0039] The gate assembly 300 also includes a side plate 2 308 arranged on the outside of the side plate 1 305, a connecting plate 309 arranged below the side plate 2 308, a side plate 310 arranged at the lower end of the connecting plate 309, a connecting shaft 3 311 arranged in the middle of the side plate 310, a hydraulic push rod 312 arranged on the connecting shaft 311, a side plate 4 313 arranged on the outer surface of the arc plate 303, a connecting rod 2 315 fixed to the hydraulic push rod 312, a connecting shaft 4 314 hingedly connected to the connecting shaft 4 314, a splint 316 arranged on the lower end surface of the connecting tube 301, a connecting rod 3 317 passing through a reserved hole at a corresponding position of the inner membrane 304, a connecting rod 4 318 arranged at the lower end of the arc plate 303, and a sensor 2 319 arranged on the inner wall of the connecting tube 301.

[0040] Specifically, the gate assembly 300 also includes side panel 2 308, connecting plate 309, side panel 310, connecting shaft 311, hydraulic push rod 312, side panel 4 313, connecting shaft 4 314, connecting rod 2 315, clamping plate 316, connecting rod 317, connecting rod 4 318, and sensor 2 319. Side panel 2 308 is arranged on the outside of side panel 1 305. Side panel 2 308 has the same cross-sectional size as side panel 1 305. A connecting plate 309 is arranged below side panel 2 308, and a side panel 3 310 is arranged at the lower end of the connecting plate 309.

[0041] A third connecting shaft 311 is disposed in the middle of side plate 310. A hydraulic push rod 312 is mounted on this shaft. One end of this hydraulic push rod 312 is fixedly connected to the third connecting shaft 311, while the other end is fixedly connected to a second connecting rod 315. One end of the second connecting rod 315 is fixedly connected to the hydraulic push rod 312, while the other end of the second connecting rod 315 is hingedly connected to a fourth connecting shaft 314. The second connecting rod 315 rotates around the fourth connecting shaft 314. The fourth connecting shaft 314 is disposed between the two fourth side plates 313, which are disposed on the outer surface of the curved plate 303. A second sensor 319 is mounted on the inner wall of the connecting tube 301 to measure the flow rate of soil debris and the soil pressure.

[0042] In Example 5, the upper end of the inner membrane 304 is arranged between the splints 316, and a connecting rod 317 is provided in the middle of the splint 316. The connecting rod 4 318 passes through the reserved holes at the corresponding positions of the inner membrane 304 to connect the arc plate 303 and the inner membrane 304, so that the lower end of the inner membrane 304 can expand and contract as the arc plate 303 opens and closes.

[0043] Specifically, the upper end of the inner membrane 304 is arranged between the splints 316, the splint 316 is arranged on the lower end surface of the connecting tube 301, and a connecting rod 317 is arranged in the middle of the splint 316. The connecting rod 317 passes through the reserved hole at the corresponding position of the inner membrane 304, and fixes the upper end of the inner membrane 304 to the lower end surface of the connecting tube 301 through the splint 316.

[0044] Connecting rod four 318 is set at the lower end of the arc plate 303 near the bottom surface. Connecting rod four 318 passes through the reserved hole at the corresponding position of the inner membrane 304, connecting the arc plate 303 and the inner membrane 304, so that the lower end of the inner membrane 304 can expand and contract as the arc plate 303 opens and closes.

[0045] In Example 6, there are four connecting rods 306 and connecting shafts 307. The connecting rods 306 are evenly distributed in a circular array on the upper end surface of the arc square rod 302, and the connecting shafts 307 are evenly distributed in a circular array along with the side plate 305 on the outer surface of the connecting tube 301.

[0046] In Example 7, the number of the side plates 2 308 is four, the number of the connecting plates 309 is four, the number of the side plates 310 is four, the number of the connecting shafts 311 is four, and the number of the hydraulic push rods 312 and the connecting rod 2 315 is four.

[0047] In Example 8, the number of the four side panels 313 is four, the number of the four connecting shafts 314 is four, and the four side panels 313 and the four connecting shafts 314 are evenly distributed on the outer surface of the arc plate 303 in a circular array.

[0048] In Example 9, the inner membrane 304 is made of a flexible material with good deformation effect.

[0049] The following combination Figures 1-10 Introduce the operation process of this spiral machine anti-surge structure:

[0050] During the tunneling process of the shield machine, under normal circumstances, the motor 202 in the drive assembly 200 is started, and the screw shaft 102 is driven to rotate through the connecting shaft 201. The soil moves from the entrance of the screw assembly 100 to the connecting cylinder 301 at the right end as the screw shaft 102 rotates. During this process, the sensor 104 on the inner wall of the outer shell 101 collects the soil pressure of the soil. A sensor is provided on the surface of the screw shaft 102 to collect the rotation speed of the screw shaft 102. When the soil moves downward from the connecting cylinder 301, the sensor 2 319 on the inner wall of the connecting cylinder 301 collects the soil pressure and flow rate of the soil. The soil flows out from the lower mouth of the trapezoidal cylinder surrounded by the arc plate 303 and the inner membrane 304 to the soil conveyor and is transported to the outside of the tunnel.

[0051] When the pressure in the soil compartment increases, the soil pressure collected by the sensor 104 also increases. At this time, the rotation speed of the spiral shaft 102 collected by the sensor set on the surface of the spiral shaft 102 also increases, the soil running speed becomes faster, and the soil flow rate and soil pressure flowing through the sensor 2 319 on the inner wall of the connecting cylinder 301 increase, and there is a risk of soil eruption. At this time, the hydraulic push rod 312 contracts, driving the connecting rod 2 315 to move upward, and the connecting rod 2 315 is hinged to the end of the connecting shaft 4 314 and moves counterclockwise around the connecting shaft 4 314. The connecting shaft 4 31 As the second connecting rod 315 moves upward, it drives the curved plate 303 and the arcuate square rod 302 to move along with the first connecting rod 306. The first connecting rod 306 rotates counterclockwise around the second connecting shaft 307, driving the curved plate 303 and the arcuate square rod 302 to rotate counterclockwise along the second connecting shaft 307 along with the first connecting rod 306. During this process, the contraction movement of the hydraulic push rod 312, accompanied by the rotation of the curved plate 303 around the second connecting shaft 307 and the rotation of the second connecting rod 315 around the fourth connecting shaft 314, causes the hydraulic push rod 312 to rotate along the third connecting shaft 311.

[0052] During this process, the upper end of the inner membrane 304 is connected to the lower end surface of the connecting tube 301 through the connecting rod 317 of the clamping plate 316, so that the diameter remains unchanged. The lower end of the inner membrane 304 is connected to the inner surface of the curved plate 303 through the connecting rod 4 318. Therefore, the lower end of the inner membrane 304 expands with the opening of the lower end of the curved plate 303 and the cross-sectional center of the connecting tube 301. In the normal soil discharge situation, the curved plate 303 is not opened, and the lower end of the inner membrane 304 is surrounded by The circle formed by the lower ends of the curved plates 303 is concentric, and the diameter of the circle formed by the lower ends of the inner membrane 304 is slightly smaller than that of the lower ends of the curved plates 303. When the pressure in the soil compartment increases, the lower ends of the curved plates 303 expand to prevent gushing, and the lower end of the inner membrane 304 deforms and expands as the curved plates 303 expand. The inner membrane 304 is made of a flexible material with good deformation properties and a smooth inner wall, which helps reduce friction between the soil and the inner wall during movement, facilitating soil removal. The space between the open adjacent curved plates 303 is filled by the deformed inner membrane 304, confining the soil flowing and falling within the screw conveyor within the space enclosed by the inner membrane 304 to prevent it from splashing out. At this time, the expansion of the curved plates 303 increases the soil discharge space and reduces the pressure of soil discharge.

[0053] When the soil compartment pressure returns to normal, the soil pressure collected by sensor 104 also returns to normal. At this time, the rotation speed of the spiral shaft 102 collected by the sensor set on the surface of the spiral shaft 102 also returns to normal, the soil running speed becomes normal, and the soil flow rate and soil pressure flowing through sensor 2 319 on the inner wall of the connecting cylinder 301 become normal pressure. At this time, the hydraulic push rod 312 extends, driving the connecting rod 2 315 to move downward. The connecting rod 2 315 is hinged to the end of the connecting shaft 4 314 and moves clockwise around the connecting shaft 4 314. The connecting shaft 4 314 moves downward with the connecting rod 2 315, driving the arc plate 303 and the arc square rod 302 to move with the connecting rod 1 306. Rod one 306 rotates clockwise around connecting shaft two 307, driving the arc plate 303 and the arc square rod 302 to rotate clockwise along connecting shaft two 307 along with connecting rod one 306. During this process, the extension movement of the hydraulic push rod 312 is accompanied by the rotation of the arc plate 303 around connecting shaft two 307 and the rotation of connecting rod two 315 around connecting shaft four 314, causing the hydraulic push rod 312 to rotate along connecting shaft three 311. At this time, the arc plate 303 changes from an open state to a closed state, and restores its original cylindrical shape with a larger upper part and a smaller lower part. At the same time, the inner membrane 304 also changes from a larger diameter at the lower end to its original state along with the arc plate 303. At this time, the soil is discharged according to the original state.

[0054] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0055] While the embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that various changes, modifications, substitutions, and alterations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A shield machine screw conveyor anti-surge structure, comprising a screw assembly (100), a drive assembly (200), and a gate assembly (300), characterized in that: The driving assembly (200) is detachably connected to the spiral shaft (102) of the spiral assembly (100) via a connecting shaft (201). The gate assembly (300) is located at the lower right end of the spiral assembly (100) near the tail end of the spiral shaft (102). The gate assembly (300) is fixedly connected to the housing (101) of the spiral assembly (100) via a connecting tube (301). The gate assembly (300) is connected to the housing (101) of the spiral assembly (100) via a hydraulic push rod. (312) shortens and lengthens, driving the arc plate (303) to rotate counterclockwise and clockwise around the second connecting shaft (307), driving the arc plate (303) to open and close. The gate assembly (300) connects the arc plate (303) to the inner membrane (304) through the fourth connecting rod (318). The inner membrane (304) expands and contracts along the center of the cross section of the connecting tube (301) as the arc plate (303) opens and closes.

2. The anti-surge structure of a screw conveyor of a shield machine according to claim 1, characterized in that: The spiral assembly (100) includes the housing (101) with an opening at the left end, the spiral shaft (102) arranged inside the housing (101), blades (103) arranged on the spiral shaft (102), and a sensor (104) arranged on the upper inner wall and the lower inner wall of the housing (101).

3. The anti-surge structure for a screw conveyor of a shield machine according to claim 1, characterized in that: The driving assembly (200) includes a motor (202) fixedly connected to the right end of the connecting shaft (201), and a second housing (203) containing the connecting shaft (201) and the motor (202).

4. The anti-surge structure for a screw conveyor of a shield machine according to claim 1, characterized in that: The gate assembly (300) includes the connecting tube (301), the arc square rod (302) arranged below the connecting tube (301), the arc plate (303) fixedly connected to the bottom surface of the arc square rod (302), and the inner membrane (304). The connecting tube (301) is connected to the arc square rod (302) and the arc plate (303) through a side plate (305), a connecting rod (306), and a connecting shaft (307).

5. The anti-surge structure for a screw conveyor of a shield machine according to claim 4, characterized in that: The gate assembly (300) further includes a side plate 2 (308) arranged on the outside of the side plate 1 (305), a connecting plate (309) arranged below the side plate 2 (308), a side plate 3 (310) arranged at the lower end of the connecting plate (309), a connecting shaft 3 (311) arranged in the middle of the side plate 3 (310), a hydraulic push rod (312) arranged on the connecting shaft 3 (311), a side plate 4 (310) arranged on the outer surface of the arc plate (303), and a connecting rod (311) arranged on the outer surface of the arc plate (303). 13), the connecting rod 2 (315) fixedly connected to the hydraulic push rod (312), the connecting shaft 4 (314) hingedly connected to the connecting shaft 4 (314), the clamping plate (316) arranged on the lower end surface of the connecting cylinder (301), the connecting rod 3 (317) passing through the reserved hole at the corresponding position of the inner membrane (304), the connecting rod 4 (318) arranged at the lower end of the arc plate (303), and the sensor 2 (319) arranged on the inner wall of the connecting cylinder (301).

6. The anti-surge structure for a screw conveyor of a shield machine according to claim 5, characterized in that: The upper end of the inner membrane (304) is arranged between the clamping plates (316), and the connecting rod three (317) is arranged in the middle of the clamping plates (316). The connecting rod four (318) passes through the reserved holes at the corresponding positions of the inner membrane (304) to connect the arc plate (303) and the inner membrane (304) so ​​that the lower end of the inner membrane (304) can expand and contract as the arc plate (303) opens and closes.

7. The anti-surge structure for a screw conveyor of a shield machine according to claim 4, characterized in that: The number of the connecting rod 1 (306) and the connecting shaft 2 (307) is four. The connecting rod 1 (306) is evenly distributed in a circular array on the upper end surface of the arc square rod (302). The connecting shaft 2 (307) is evenly distributed in a circular array along with the side plate 1 (305) on the outer surface of the connecting tube (301).

8. The anti-surge structure for a screw conveyor of a shield machine according to claim 5, characterized in that: The number of the side plates (308) is four, the number of the connecting plates (309) is four, the number of the side plates (310) is four, the number of the connecting shafts (311) is four, and the number of the hydraulic push rods (312) and the connecting rods (315) is four.

9. The anti-surge structure for a screw conveyor of a shield machine according to claim 5, characterized in that: The number of the side panels (313) is four, the number of the connecting shafts (314) is four, and the side panels (313) and the connecting shafts (314) are evenly distributed on the outer surface of the arc-shaped plate (303) in a circular array.

10. The anti-surge structure for a screw conveyor of a shield machine according to claim 5, characterized in that: The inner membrane (304) is made of a flexible material with good deformation effect, and the inner wall of the inner membrane is smooth.

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