Intelligent sealing gate for shield and control method thereof

Abstract

The application discloses an intelligent sealing gate for a shield tunnel and a control method thereof. The gate comprises a door frame assembly, a gate plate assembly, a guide structure, a sealing and slurry leakage detection structure and a control part. The door frame assembly comprises a door frame body, and a supporting wedge surface structure is arranged on the door frame body. The gate plate assembly comprises a gate plate body, and a pressing wedge surface structure is arranged on the gate plate body. The gate plate body is connected with a driving assembly. The guide structure comprises a guide plate and a guide column. A guide groove is arranged on the guide plate and sleeved with the guide column. The guide groove comprises an isolation section and a sealing section. The sealing and slurry leakage detection structure is used for sealing, pressure bearing capacity test and slurry leakage detection between the door frame body and the gate plate body. When the guide column is located in the isolation section, the pressing wedge surface structure and the supporting wedge surface structure are spaced from each other, and the gate plate body is spaced from a sealing part. When the guide column is located in the sealing section, the gate plate body is tightly pressed against the sealing part. The application has high pressure bearing capacity, can reduce sealing wear and tear, and can detect whether slurry leaks in real time, so that the working sealing stability of the gate is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tunnel construction, in particular to an intelligent sealing gate for shield tunneling and a control method thereof. BACKGROUND

[0002] In the technical field of tunnel construction, the air cushion type slurry balance shield construction method is the most effective measure to ensure controllable ground settlement, and the reliability of the rear gate plays a decisive role in the safety of the air cushion chamber operation. However, the existing gate design has the following disadvantages:

[0003] 1) In order to withstand the slurry pressure of the slurry chamber, there is a certain amount of compression in the initial installation of the seal, and the gate plate is always in close contact with the seal and the guide rail during opening and closing, which causes serious wear of the seal and the guide rail.

[0004] 2) It is impossible to quickly detect whether the seal is damaged. Only when the gate cannot be closed can the degree of wear of the seal and the guide rail be checked.

[0005] Therefore, the present application is proposed based on the experience and practice of the present inventor in the relevant industry for many years, in order to overcome the defects of the prior art. SUMMARY

[0006] The present application aims to provide an intelligent sealing gate for shield tunneling and a control method thereof, which solves the problem of serious wear of the gate seal and difficulty in detecting slurry leakage in the prior art. The present application has high pressure-bearing capacity, can reduce seal wear and detect slurry leakage in real time, and ensures the stability of the gate working seal.

[0007] The purpose of the present application is achieved by an intelligent sealing gate for shield tunneling, which is arranged on a front bulkhead of a shield body and comprises:

[0008] A door frame assembly comprising a door frame body, the door frame body being provided with a support wedge surface structure;

[0009] A gate plate assembly comprising a gate plate body, the gate plate body being provided with a pressing wedge surface structure; the gate plate body is connected with a driving assembly for driving the lifting thereof;

[0010] A guide structure comprising a guide plate and a guide column arranged on the door frame body or the gate plate body respectively, the guide plate being provided with a guide groove in which the guide column is sleeved, the guide groove comprising an isolation section and a sealing section;

[0011] A sealing and leakage detection structure is arranged on the door frame body and used for sealing, pressure bearing test and leakage detection between the door frame body and the gate body; the sealing and leakage detection structure comprises a sealing part; when the guide column is located in the isolation section, the pressing wedge surface structure and the supporting wedge surface structure are spaced from each other, and the gate body is arranged in a spaced manner with the sealing part; when the guide column is located in the sealing section, the pressing wedge surface structure is tightly sealed on the supporting wedge surface structure so that the gate body is tightly attached to the sealing part.

[0012] A control part, the driving assembly, the gate assembly and the control part are electrically connected.

[0013] In a preferred embodiment of the present application, a bottom end locking part is arranged at the bottom of the door frame body; when the gate body is tightly sealed on the door frame body, the bottom end locking part tightly locks the gate body from the bottom; and the bottom end locking part is electrically connected with the control part.

[0014] In a preferred embodiment of the present application, a top end locking part is arranged above the door frame body; when the gate body is lifted away from the door frame body, the top end locking part tightly locks the gate body from the top; and the top end locking part is electrically connected with the control part.

[0015] In a preferred embodiment of the present application, the supporting wedge surface structure comprises a first top wedge surface body, a first middle wedge surface body and a first bottom wedge surface body; the pressing wedge surface structure comprises a second top wedge surface body, a second middle wedge surface body and a second bottom wedge surface body; and the second top wedge surface body, the second middle wedge surface body and the second bottom wedge surface body can be tightly sealed and locked on the first top wedge surface body, the first middle wedge surface body and the first bottom wedge surface body respectively.

[0016] In a preferred embodiment of the present application, the guide groove further comprises a gradual section and a vertical section which are connected with the isolation section and the sealing section; when the guide column is located in the gradual section, the gate body is close to the door frame body under the constraint of the guide groove; when the guide column is located in the vertical section, the gate body is vertically downward to the pressing wedge surface structure which contacts the supporting wedge surface structure under the constraint of the guide groove; when the guide column enters the sealing section from the vertical section, the second top wedge surface body, the second middle wedge surface body and the second bottom wedge surface body can be tightly sealed and locked on the first top wedge surface body, the first middle wedge surface body and the first bottom wedge surface body respectively.

[0017] In a preferred embodiment of the present application, the sealing part comprises a gasbag sealing unit and a steamed bun-shaped sealing unit; the door frame body is provided with a gasbag sealing groove and a steamed bun-shaped sealing groove at intervals; the gasbag sealing unit is embedded in the gasbag sealing groove, and the steamed bun-shaped sealing unit is embedded in the steamed bun-shaped sealing groove; a sealing groove is arranged between the gasbag sealing groove and the steamed bun-shaped sealing groove, and the sealing groove is used for inflating and pressure maintaining to detect the sealing property or for injecting grease to block leakage; a plurality of grease interfaces in communication with the sealing groove are arranged at intervals on the circumferential surface of the door frame body.

[0018] In a preferred embodiment of the present application, two guide grooves are arranged in parallel on the guide plate, and the two guide grooves are arranged at intervals in the longitudinal and transverse directions; two guide columns are arranged at intervals on the side surface of the shutter body, and the two guide columns can be respectively and slidably sleeved in the two guide grooves.

[0019] In a preferred embodiment of the present application, the driving assembly comprises two gate oil cylinders arranged in parallel in the vertical direction; each gate oil cylinder is electrically connected to the control part, and each gate oil cylinder feeds back real-time thrust to the control part; each gate oil cylinder comprises a gate cylinder and a gate cylinder rod; a first hinged seat is arranged above the door frame body on the front partition plate of the shield body; a second hinged seat is arranged at the bottom end of the shutter body; the first end of the gate cylinder is hinged to the first hinged seat; the first end of the gate cylinder rod is sealingly and penetratingly arranged through the second end of the gate cylinder; and the second end of the gate cylinder rod is hinged to the second hinged seat.

[0020] In a preferred embodiment of the present application, at least one side of the shutter body is connected with a distance detector, the distance detector is used for detecting the distance between the shutter body and the adjacent surface of the door frame body in real time; and the distance detector is electrically connected to the control part.

[0021] In a preferred embodiment of the present application, the guide structure further comprises a guide block arranged on the side surface of the shutter body, the guide block can slide against the guide plate; and a guide bearing is arranged at the end of the guide column, and the guide bearing is slidably sleeved in the guide groove.

[0022] In a preferred embodiment of the present application, the bottom end locking part comprises a bottom pin pulling oil cylinder, a bottom gate fixed seat, a bottom pin pulling oil cylinder fixed seat and a bottom lug, the bottom pin pulling oil cylinder fixed seat is arranged on the shield front bulkhead below the door frame body, the bottom pin pulling oil cylinder comprises a bottom pin pulling cylinder barrel and a bottom pin pulling cylinder rod, the bottom pin pulling cylinder barrel is connected to the bottom pin pulling oil cylinder fixed seat, and the bottom pin pulling cylinder rod is arranged against the top surface of the bottom gate fixed seat; the bottom lug is arranged at the bottom end of the gate body, a bottom insertion hole is arranged on the bottom lug, the bottom pin pulling cylinder rod can be inserted into the bottom insertion hole, and the bottom pin pulling oil cylinder is electrically connected with the control part.

[0023] In a preferred embodiment of the present application, the top end locking part comprises a top pin pulling oil cylinder, a top gate fixed seat, a top pin pulling oil cylinder fixed seat and a top lug, the top pin pulling oil cylinder fixed seat is arranged on the shield front bulkhead above the door frame body, the top pin pulling oil cylinder comprises a top pin pulling cylinder barrel and a top pin pulling cylinder rod, the top pin pulling cylinder barrel is connected to the top pin pulling oil cylinder fixed seat, and the top pin pulling cylinder rod is arranged against the bottom surface of the top gate fixed seat; the top lug is arranged at the top end of the gate body, a top insertion hole is arranged on the top lug, the top pin pulling cylinder rod can be inserted into the top insertion hole, and the top pin pulling oil cylinder is electrically connected with the control part.

[0024] The purpose of the present application can also be achieved in the following way, a control method of the intelligent sealing gate for shield tunneling, comprising:

[0025] The guide groove comprises an isolation section, a gradual approach section, a vertical section and a sealing section;

[0026] During the opening process of the gate assembly, the driving assembly lifts the gate body, the guide column on the gate body rises in the sealing section of the guide groove, and the pressing wedge surface structure moves upward away from the supporting wedge surface structure; the guide column enters the isolation section through the vertical section and the gradual approach section, and the gate body moves away from the door frame assembly; the driving assembly continuously lifts the gate body to open the gate;

[0027] During the opening process of the gate assembly, the driving assembly pushes the gate body to descend, the guide column on the gate body descends in the isolation section of the guide groove, and the gate body descends with a horizontal distance from the door frame body; the guide column enters the sealing section through the gradual approach section and the vertical section, and the pressing wedge surface structure moves downward and approaches the door frame body until the pressing wedge surface structure presses the supporting wedge surface structure; the gate body is pressed and fitted to the sealing part, and the gate is closed.

[0028] From the above, the intelligent sealing gate for shield tunnel and the control method thereof have the following beneficial effects:

[0029] The intelligent sealing gate for shield tunnel provided by the application has high pressure bearing capacity, can reduce sealing wear and can detect whether slurry leakage occurs in real time.

[0030] In the application, when the gate body is lowered and sealed to the frame body, the compression wedge surface structure is compressed and sealed on the support wedge surface structure, the compression sealing of the gate body and the frame body is realized through the matched wedge surface structure, the sealing of the external slurry pressure is realized, the driving assembly can provide the downward compression force for the gate body, the sealing and slurry leakage detection structure is compressed more tightly, and the pressure bearing capacity is ensured; during the lifting operation of the gate body, the guide column is located in the isolation section of the guide groove, and the gate body is away from the frame body, so that the support wedge surface structure on the gate body and the frame body is not contacted in most of the stroke range, and the sealing wear is slowed down; the guide groove on the guide plate is opened along the set trajectory, the lifting stability of the gate body and the precise control of the movement trajectory are ensured; the sealing and slurry leakage detection structure ensures the sealing between the frame body and the gate body, and can realize the pressure bearing capacity test and the slurry leakage detection, and further ensures the sealing of the gate; the operation of the gate body is controlled as a whole through the control part, the reliable operation of the gate is realized through the intelligent detection control, and the intelligent level of the application is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0031] The following drawings are only intended to schematically illustrate and explain the application, and do not limit the scope of the application.

[0032] In the application, the intelligent sealing gate for shield tunnel comprises a frame body, a gate body, a driving assembly, a sealing and slurry leakage detection structure and a control part.

[0033] Figure 1 FIG. 1 is a front view of the intelligent sealing gate for shield tunnel in the closed state of the gate according to the application.

[0034] Figure 2 FIG. 2 is a sectional view of the intelligent sealing gate for shield tunnel in the closed state of the gate according to the application.

[0035] Figure 3 FIG. 3 is a sectional view of the intelligent sealing gate for shield tunnel at the guide plate in the closed state of the gate according to the application.

[0036] Figure 4 FIG. 4 is a front view of the intelligent sealing gate for shield tunnel in the open state of the gate according to the application.

[0037] Figure 5 FIG. 5 is a sectional view of the intelligent sealing gate for shield tunnel in the open state of the gate according to the application.

[0038] Figure 6Figure 8 is a sectional view of the intelligent sealing gate for shield tunneling at the guide plate in the open state of the gate according to the present application.

[0039] Figure 7 Figure 9 is a front view of the door frame body according to the present application.

[0040] Figure 8 Figure 10 is a sectional view of the door frame body according to the present application.

[0041] Figure 9 Figure 11 is a front view of the gate plate body according to the present application.

[0042] Figure 10 Figure 12 is a connection exploded schematic view of the distance detector according to the present application.

[0043] Figure 11 Figure 13 is a side view of the gate plate body according to the present application.

[0044] Figure 12 Figure 14 is a sectional view of the gate plate body and the door frame body according to the present application when they are fitted together.

[0045] Figure 13 Figure 15 is a schematic view of the sealing and slurry leakage detection structure according to the present application.

[0046] Figure 14 Figure 16 is a schematic view of the installation at the guide block according to the present application.

[0047] Figure 15 Figure 17 is a schematic view of the top pin pulling oil cylinder in the extended locking state. Figure 14 Figure 18 is a schematic view of the top pin pulling oil cylinder in the retracted unlocking state.

[0048] Figure 16 Figure 19 is a schematic view of the bottom pin pulling oil cylinder in the extended locking state. Figure 14 Figure 20 is a schematic view of the bottom pin pulling oil cylinder in the retracted unlocking state.

[0049] Figure 21 is a schematic view of the guide column located in the isolation section of the guide groove.

[0050] Figure 22 is a schematic view of the guide column before entering the sealing section.

[0051] Figure 19 Figure 23 is a schematic view of the guide column entering the sealing section.

[0052] Figure 20 Figure 24 is a schematic view of the guide column in the sealing section.

[0053] Figure 25 is a schematic view of the guide column in the sealing section.

[0054] Figure 26 is a schematic view of the guide column in the sealing section.

[0055] Figure 23 Figure 27 is a schematic view of the guide column in the sealing section.

[0056] Figure 24The relationship between the distance between the gate plate body and the door frame body and the gate oil cylinder stroke during the gate closing process.

[0057] Figure 25 The relationship between the gate oil cylinder thrust and the gate oil cylinder stroke during the gate closing process.

[0058] Figure 26 The gate oil cylinder control host computer display interface diagram.

[0059] In the figure:

[0060] 1, door frame assembly;

[0061] 101, door frame body; 102, first top wedge surface; 103, first middle wedge surface; 104, first bottom wedge surface; 105, air bag sealing groove; 106, steamed bun type sealing groove; 107, sealing groove; 108, grease interface;

[0062] 2, gate plate assembly;

[0063] 201, gate plate body; 202, top ear plate; 203, bottom ear plate; 204, guide column fixing seat; 205, guide column connecting section; 206, connecting seat; 207, distance detector; 208, lifting lug; 209, second hinge seat; 210, reinforcing rib plate; 2011, second top wedge surface; 2012, second middle wedge surface; 2013, second bottom wedge surface;

[0064] 3, guide plate; 301, guide groove;

[0065] 4, first hinge seat;

[0066] 5, gate oil cylinder;

[0067] 6, top pin pulling oil cylinder;

[0068] 7, top gate plate fixing seat;

[0069] 8, top pin pulling oil cylinder fixing seat;

[0070] 9, bottom pin pulling oil cylinder;

[0071] 10, bottom gate plate fixing seat;

[0072] 11, bottom pin pulling oil cylinder fixing seat;

[0073] 12, air bag sealing unit;

[0074] 13, steamed bun type sealing unit;

[0075] 14, sealing grease channel;

[0076] 15, guide block;

[0077] 16. A guide bearing. DETAILED DESCRIPTION

[0078] In order to have a clearer understanding of the technical features, objectives and effects of the present application, the specific embodiments of the present application will be described in detail with reference to the accompanying drawings.

[0079] The specific embodiments of the present application described herein are for the purpose of illustration only and should not be construed in any manner as limiting the present application. Those skilled in the art can conceive any possible variations based on the present application under the teachings of the present application, which should be considered as falling within the scope of the present application. It should be noted that when an element is referred to as "provided on" another element, it can be directly on the other element or there can be a mediating element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or there can be a mediating element. The terms "mounting", "connection", "linking" should be interpreted broadly, for example, it can be mechanical connection or electrical connection, or it can be internal connection of two elements, or it can be direct connection or indirect connection through a medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for the purpose of illustration only and do not indicate the only embodiment.

[0080] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0081] As shown in Figures 1 to 26 The present application provides an intelligent sealing gate for shield tunneling, which is arranged on a front bulkhead of a shield body and comprises:

[0082] A door frame assembly 1 comprises a door frame body 101, and a supporting wedge surface structure is arranged on the door frame body 101; the door frame body 101 is welded to a through hole (prior art) on the front bulkhead of the shield body;

[0083] A gate plate assembly 2 comprises a gate plate body 201, and a pressing wedge surface structure is arranged on the gate plate body 201; the gate plate body 201 is connected with a driving assembly for driving the gate plate body 201 to ascend and descend; an open gate is arranged on the door frame body 101, and the gate plate body 201 descends to block the gate and ascends to leave the gate;

[0084] The guide structure comprises a guide plate 3 and a guide column arranged on the door frame body 101 or the shutter body 201 respectively, that is, the guide plate 3 is arranged on the door frame body 101, and the guide column is arranged on the shutter body 201, or the guide plate 3 is arranged on the shutter body 201, and the guide column is arranged on the door frame body 101; the guide plate 3 is provided with a guide groove 301 opened along a set track, and the guide column is sleeved in the guide groove 301, and the guide groove 301 comprises an isolation section and a sealing section;

[0085] The sealing and slurry leakage detection structure is arranged on the door frame body, and is used for sealing the door frame body 101 and the shutter body 201, testing the pressure bearing capacity and detecting slurry leakage; the sealing and slurry leakage detection structure comprises a sealing part, when the guide column is located in the isolation section, the pressing wedge surface structure and the supporting wedge surface structure are arranged in a transverse interval, and the shutter body 201 is arranged in an interval with the sealing part; when the guide column is located in the sealing section, the pressing wedge surface structure is tightly pressed on the supporting wedge surface structure to tightly press and fit the shutter body 201 to the sealing part, so that the shutter body 201 is tightly fitted with the door frame body 101, the sealing effect of external slurry pressure is realized, and the driving assembly can provide a downward pressing force for the shutter body 201, so that the sealing between the pressing wedge surface structure and the supporting wedge surface structure is more and more tight when the pressure is increased, and the pressure bearing capacity is ensured;

[0086] The control part is electrically connected with the driving assembly and the shutter assembly 2.

[0087] The present application solves the problems of serious sealing wear and difficult slurry leakage detection in the prior art, and provides an intelligent sealing shutter for shield construction, which has high pressure bearing capacity, can reduce sealing wear and can detect slurry leakage in real time.

[0088] In the application, when the gate body 201 is lowered and sealed in the door frame body 101, the compression wedge surface structure is compressed and sealed on the supporting wedge surface structure, the compression and sealing of the gate body 201 and the door frame body 101 are realized through the matched wedge surface structure, the sealing of the external mud pressure is realized; the driving assembly can provide the downward compression force for the gate body 201, the sealing and mud leakage detection structure is compressed more tightly, and the pressure bearing capacity is ensured; during the lifting operation of the gate body 201, the guide column is located in the isolation section of the guide groove 301, and the gate body 201 is away from the door frame body 101, so that the gate body 201 is not in contact with the supporting wedge surface structure on the door frame body 101 in most of the stroke range, and the wear of the sealing is slowed down; the guide groove 301 on the guide plate 3 is opened along the set trajectory, and the lifting stability of the gate body 201 and the precise control of the movement trajectory are ensured; the sealing and mud leakage detection structure ensures the sealing between the door frame body 101 and the gate body 201, and can realize the pressure bearing capacity test and mud leakage detection, and further ensure the sealing of the gate; the operation of the gate body 201 is controlled by the control part, the reliable operation of the gate is realized through intelligent detection control, and the intelligent level of the application is ensured.

[0089] Further, as shown in Figure 1 、 Figure 4 , the bottom of the door frame body 101 is provided with a bottom end locking part, when the gate body 201 is closed and sealed in the door frame body 101, the bottom end locking part locks the gate body 201 from the bottom; the bottom end locking part is electrically connected with the control part. The bottom end locking part ensures the stability of the gate body 201 in the closed state, and avoids the opening of the gate body 201 caused by misoperation.

[0090] Further, as shown in Figure 1 、 Figure 4 , the top of the door frame body 101 is provided with a top end locking part, when the gate body 201 is lifted and separated from the door frame body 101, the top end locking part locks the gate body 201 from the top; the top end locking part is electrically connected with the control part. The top end locking part ensures the stability of the gate body 201 in the open state, and avoids the closing of the gate body 201 caused by misoperation.

[0091] Further, as shown in Figure 8 、 Figure 11 、 Figure 12 , the supporting wedge surface structure includes a first top wedge surface body 102, a first middle wedge surface body 103 and a first bottom wedge surface body 104, the compression wedge surface structure includes a second top wedge surface body 2011, a second middle wedge surface body 2012 and a second bottom wedge surface body 2013, and the second top wedge surface body 2011, the second middle wedge surface body 2012 and the second bottom wedge surface body 2013 can be respectively sealed and clamped on the first top wedge surface body 102, the first middle wedge surface body 103 and the first bottom wedge surface body 104.

[0092] In an embodiment, as shown in Figure 8 two clamping blocks are welded in the middle of the door frame body 101, and several clamping blocks are welded at the bottom of the door frame body 101; a first top wedge surface body 102 is processed at the top of the door frame body 101, a first middle wedge surface body 103 is processed on the two clamping blocks in the middle of the door frame body 101, and a first bottom wedge surface body 104 is processed on the clamping blocks at the bottom of the door frame body 101.

[0093] As shown in Figure 11 , the second top wedge surface body 2011, the second middle wedge surface body 2012 and the second bottom wedge surface body 2013 are directly formed on the shutter body 201, and correspond to the first top wedge surface body 102, the first middle wedge surface body 103 and the first bottom wedge surface body 104 respectively.

[0094] Further, as shown in Figure 2 , Figure 5 , FIG. 21, FIG. 22, Figure 23 the guide groove 301 further includes a gradual section and a vertical section connecting the isolation section and the sealing section; when the guide column is located in the gradual section, the shutter body 201 is close to the door frame body 101 under the constraint of the guide groove 301; when the guide column is located in the vertical section, the shutter body 201 is vertically downward to contact the support wedge surface structure under the constraint of the guide groove 301; when the guide column enters the sealing section from the vertical section, the second top wedge surface body, the second middle wedge surface body and the second bottom wedge surface body can be respectively sealed and clamped on the first top wedge surface body 102, the first middle wedge surface body 103 and the first bottom wedge surface body 104.

[0095] The shutter assembly 2 realizes the opening and closing process of the shutter body 201 under the action of the driving assembly, and opens and closes according to the designed guide track under the constraint of the guide plate 3; under the constraint of the guide groove 301, the shutter body 201 and the sealing part have no contact relative motion in most of the stroke range, which slows down the sealing wear; when the shutter body 201 is about to close, the pressing wedge surface structure on the shutter assembly 2 enters the wedge surface matching area under the constraint of the guide groove 301, and finally closes the shutter body 201 through wedge surface constraint extrusion sealing.

[0096] Further, as shown in Figure 2 , Figure 5 , Figure 7 , Figure 12 , Figure 13As shown, the sealing part includes an air bag sealing unit 12 and a bun-shaped sealing unit 13; the door frame body is provided with air bag sealing grooves 105 and bun-shaped sealing grooves 106 at intervals, the air bag sealing unit 12 is embedded in the air bag sealing groove 105, and the bun-shaped sealing unit 13 is embedded in the bun-shaped sealing groove 106; a sealing groove 107 is arranged between the air bag sealing groove 105 and the bun-shaped sealing groove 106, and the sealing groove 107 is used for detecting the sealing performance by air pressure or for injecting grease to block the leakage; a plurality of grease interfaces 108 in communication with the sealing groove 107 are arranged on the door frame body 101 at intervals in the circumferential direction.

[0097] The bun-shaped sealing unit 13 constitutes the first sealing for isolating the external water and soil pressure or mud pressure; the air bag sealing unit 12 is inflated and expanded, and when the first sealing fails, it serves as the second sealing for isolating the external pressure (water and soil pressure or mud pressure); the sealing groove 107 is arranged between the air bag sealing unit 12 and the bun-shaped sealing unit 13, can be inflated to maintain pressure, or can be lubricated by injecting lubricating grease through the sealing grease channel 14, and in an emergency, shield tail grease or polyurethane can be injected to play an emergency sealing role.

[0098] The air bag sealing unit 12 can be inflated and expanded by the pipeline to tightly adhere to the gate plate body 201, so that the sealing groove 107 (grease groove) between the bun-shaped sealing unit 13 and the air bag sealing unit 12 forms a sealed cavity; in the normal closed state of the gate, the sealing performance of the bun-shaped sealing unit 13 can be detected by air pressure maintenance through the grease interface 108; if the air pressure leaks, the new sealing can be replaced.

[0099] As shown in the figure, Figure 13 In the pressurized warehouse, personnel cannot observe the running state of the gate plate assembly 2 at all times and check whether the sealing leaks mud. The air bag sealing unit 12 is inflated by the reserved pipeline to tightly adhere to the gate plate body 201, so that the sealing groove 107 between the bun-shaped sealing unit 13 and the air bag sealing unit 12 forms a sealed cavity; the sealing performance of the bun-shaped sealing unit 13 can be detected by air pressure maintenance through the grease interface 108. In the case of a large amount of mud leakage due to the failure to replace the sealing in time, the shield tail grease is injected through the grease interface 108 to fill the sealing groove 107 (grease groove), thereby achieving the purpose of emergency sealing.

[0100] Further, as shown in the figure, Figure 3 , Figure 6 Two guide grooves 301 are arranged in parallel at intervals on the guide plate 3, and the two guide grooves 301 are arranged at intervals in the longitudinal and transverse directions; two guide columns are arranged at intervals on the side surface of the gate plate body 201, and the two guide columns can be respectively and slidably arranged in the two guide grooves 301. A pair of parallel guide columns and guide grooves 301 are used for movement guidance on one side to ensure the stability of the movement of the gate plate body 201.

[0101] Further, as shown in Figure 1 , Figure 4 , Figure 9 , the driving assembly comprises two gate oil cylinders 5 arranged in the vertical direction and parallel to each other, each gate oil cylinder 5 is electrically connected to the control part, and each gate oil cylinder 5 feeds back real-time thrust to the control part; each gate oil cylinder 5 comprises a gate cylinder and a gate cylinder rod, a first hinged seat 4 is arranged above the door frame body 101 on the shield front partition plate, a second hinged seat 209 is arranged at the bottom end of the gate plate body 201, the first end of the gate cylinder is hinged to the first hinged seat 4, the first end of the gate cylinder rod is sealed and passes through the second end of the gate cylinder, and the second end of the gate cylinder rod is hinged to the second hinged seat 209.

[0102] The gate plate body 201 is moved to achieve the purpose of opening and closing by pulling and pushing the gate oil cylinder 5. During the process of closing the gate, the gate oil cylinder 5 can feed back real-time thrust in real time, and compare with the normal running test thrust to judge whether the opening and closing process of the gate plate body 201 is abnormal.

[0103] Further, as shown in Figure 9 , Figure 10 , at least one side of the gate plate body is connected with a distance detector 207, the distance detector 207 is used for detecting the distance between the adjacent surfaces of the gate plate body 201 and the door frame body 101 in real time; the distance detector 207 is electrically connected to the control part. The connecting seat 206 is arranged on the gate plate body 201, and the distance detector 207 is connected to the connecting seat 206 by bolts.

[0104] During the process of closing the gate, the distance detector 207 installed on the gate plate assembly 2 can detect the actual distance between the gate plate body 201 and the door frame body 101 in real time, and compare with the theoretically designed distance to judge the wear degree of the guide column, and then the guide column can be replaced in time.

[0105] Further, as shown in Figure 1 , Figure 4 , Figure 9 , Figure 14 , Figure 15 , Figure 16 , the guide structure further comprises a guide block 15 arranged on the side surface of the gate plate body 201, the guide block 15 can slide along the abutting surface of the guide plate 3; the end of the guide column is provided with a guide bearing 16, and the guide bearing 16 is slidably sleeved in the guide groove 301.

[0106] The guide column fixing seat 204 and the guide column connecting section 205 are arranged on the gate plate body 201, the guide column connecting section 205 is connected to the guide column fixing seat 204 by tight fit; and the guide column connecting section 205 connects the guide column.

[0107] Further, as shown in Figure 9As shown, the gate body 201 is also provided with lifting lugs 208 for lifting during disassembly and assembly of the gate body 201.

[0108] The gate body 201 is also provided with a reinforcing rib plate 210 to ensure the structural rigidity and strength of the gate body 201 and to avoid deformation of the gate body 201 leading to sealing failure.

[0109] In a specific embodiment of the present application, a guide plate 3 is arranged on each side of the door frame body 101, and two parallel guide grooves 301 are arranged on the guide plate 3. The gate body 201 is provided with guide columns, and each guide column is slidably arranged in the guide groove 301. The length of the guide plate 3 is greater than that of the door frame body 101, so the guide plate 3 needs to be fixed on the shield front bulkhead and the door frame body 101 by bolts and pins to constrain the movement trajectory of the gate body 201.

[0110] The guide block 15 is connected to the gate body 201 by bolts, and the guide column is connected to the guide column connecting section 205 of the gate body 201 by bolts. The guide block 15 and the guide bearing can be replaced when they are worn out. The guide block 15 and the guide column (including the guide bearing) are arranged at the four corners of the gate body 201, and the guide block 15 and the guide column reciprocate along the guide plate 3 and the guide groove 301, respectively. The guide block 15 tightens the guide plate 3 on both sides to prevent the gate body 201 from tilting. The guide column constrains the movement of the gate body 201 along the guide groove 301 to avoid wear and tear during movement and improve stability.

[0111] Further, as shown in Figure 1 , Figure 4 , Figure 19 , Figure 20 , the bottom locking part includes a bottom pin pulling oil cylinder 9, a bottom gate fixed seat 10, a bottom pin pulling oil cylinder fixed seat 11, and a bottom lug plate 203. The bottom pin pulling oil cylinder fixed seat 11 is arranged on the shield front bulkhead below the door frame body 101. The bottom pin pulling oil cylinder 9 includes a bottom pin pulling cylinder and a bottom pin pulling cylinder rod. The bottom pin pulling cylinder is connected to the bottom pin pulling oil cylinder fixed seat 11, and the bottom pin pulling cylinder rod is arranged against the top surface of the bottom gate fixed seat 10. When the gate oil cylinder 5 moves upward due to misoperation, the bottom pin pulling cylinder rod abuts against the top surface of the bottom gate fixed seat 10, which can better support the gate body 201. The bottom lug plate 203 is arranged at the bottom end of the gate body 201, and the bottom lug plate 203 is provided with a bottom insertion hole. The bottom pin pulling cylinder rod can be inserted into the bottom insertion hole. The bottom pin pulling oil cylinder 9 is electrically connected to the control part.

[0112] Further, as shown in Figure 1 , Figure 4, as shown in FIG. 17, FIG. 18, the top end locking part includes a top pin pulling oil cylinder 6, a top gate fixed seat 7, a top pin pulling oil cylinder fixed seat 8 and a top lug 202, the top pin pulling oil cylinder fixed seat 8 is arranged on the shield front partition plate above the door frame body 101, the top pin pulling oil cylinder 6 includes a top pin pulling cylinder and a top pin pulling cylinder rod, the top pin pulling cylinder is connected to the top pin pulling oil cylinder fixed seat 8, and the top pin pulling cylinder rod is arranged in close contact with the bottom surface of the top gate fixed seat 7; when the gate oil cylinder 5 is misoperated to move downward, the top pin pulling cylinder rod is in close contact with the bottom surface of the top gate fixed seat 7, and can better play a supporting role; the top lug 202 is arranged at the top end of the gate body 201, a top insertion hole is arranged on the top lug 202, and the top pin pulling cylinder rod can be inserted into the top insertion hole; the top pin pulling oil cylinder 6 is electrically connected with the control part.

[0113] In the open or closed state of the gate, the cylinder rods of the top pin pulling oil cylinder 6 and the bottom pin pulling oil cylinder 9 are inserted into the top insertion hole and the bottom insertion hole, and the gate body 201 is clamped to prevent the gate body 201 from being misoperated to be opened or closed.

[0114] Further, the door frame assembly 1, the first hinge seat 4, the top gate fixed seat 7, the top pin pulling oil cylinder fixed seat 8, the bottom gate fixed seat 10 and the bottom pin pulling oil cylinder fixed seat 11 are welded on the shield front partition plate; the top pin pulling oil cylinder 6 is fixed on the top pin pulling oil cylinder fixed seat 8 through a stud; the bottom pin pulling oil cylinder 9 is fixed on the bottom pin pulling oil cylinder fixed seat 11 through a stud; the first end of the gate cylinder of the gate oil cylinder 5 is hinged to the first hinge seat 4, and the second end of the gate cylinder rod is hinged to the second hinge seat 209 of the gate body 201. The left and right guide plates 3 are fixed on the door frame body 101 through bolts.

[0115] Embodiment 1

[0116] The control method of the intelligent sealing gate for a shield provided by the application is as follows:

[0117] The guide groove 301 includes an isolation section, a gradual approach section, a vertical section and a sealing section; in the opening process of the gate assembly, the driving assembly lifts the gate body, the guide column on the gate body rises in the sealing section of the guide groove, and the compression wedge surface structure moves upward away from the support wedge surface structure; the guide column enters the isolation section through the vertical section and the gradual approach section, and the gate body 201 moves away from the door frame assembly 1; the driving assembly continuously lifts the gate body to open the gate;

[0118] During the opening process of the gate assembly, the driving assembly pushes the gate body to descend, the guide column on the gate body descends in the isolation section of the guide groove, and the gate body 201 and the door frame body 101 keep a horizontal distance and descend; the guide column enters the sealing section through the gradual approach section and the vertical section, the compression wedge surface structure moves downward and approaches the door frame body 101, and until the compression wedge surface structure compresses the support wedge surface structure; the gate body 201 compresses and fits the sealing part, and the gate is closed.

[0119] Specifically, the opening and closing of the gate are realized by controlling the extension and retraction of the gate oil cylinder 5. Specifically, the opening process includes:

[0120] During the opening process: in the process of retracting the gate oil cylinder 5 by a wedge amount (the wedge amount is determined according to the sizes of the gate body 201, the sealing part and the door frame body 101, and the sizes of the sections of the guide groove 301), the wedge surfaces (the second top wedge surface body, the second middle wedge surface body and the second bottom wedge surface body) arranged at the upper, middle and lower positions of the gate body 201 move upward and away from the door frame body 101, and the steamed bun type sealing unit 13 restores the deformation.

[0121] When the wedge surfaces of the gate body 201 are away from the wedge surfaces (the first top wedge surface body 102, the first middle wedge surface body 103 and the first bottom wedge surface body 104) of the door frame body 101, the gate body 201 is away from the door frame assembly 1, that is, the door frame assembly 1 and the gate assembly 2 are pulled apart by a certain distance at this time, and the gate body 201 is in a non-contact state with the sealing part. Under the constraint of the left and right guide plates 3, the gate body 201 moves vertically upward until the gate is opened.

[0122] During the entire opening process, the gate body 201 contacts the sealing part only in a stroke range of a wedge amount, and the gate body 201 does not contact the sealing part in most of the remaining stroke range, which slows down the wear of the sealing part.

[0123] During the closing process: the gate cylinder rod of the gate oil cylinder 5 extends, drives the gate body 201 to move downward, and when the wedge surfaces of the gate body 201 are about to enter a certain distance from the wedge surfaces of the door frame body 101, the wedge surfaces (the second top wedge surface body 2011, the second middle wedge surface body 2012 and the second bottom wedge surface body 2013) arranged at the upper, middle and lower positions of the gate body 201 move downward and approach the door frame body 101, the steamed bun type sealing unit 13 starts to compress, and until the gate is completely closed.

[0124] The air bag sealing unit 12 has two states of inflation and normal pressure. When the gate is in the open state or the gate body 201 is being lifted, the air bag sealing unit 12 is in the normal pressure state, that is, the air bag sealing unit 12 is retracted into the sealing groove and does not contact the gate body 201. After the gate is closed, when the pressure bearing performance of the steamed bun type sealing unit 13 needs to be tested, the air bag sealing unit 12 is inflated, so that the air bag sealing unit 12 is in full contact with the gate body 201, and then the sealing groove 107 is inflated to test the pressure bearing capacity of the sealing system. Or when the steamed bun type sealing unit 13 is damaged, the air bag sealing unit 12 is inflated, and then the sealing groove 107 is injected with shield tail grease or polyurethane to achieve the effect of emergency sealing.

[0125] During the closing of the gate, the distance detector 207 installed on the gate assembly 2 can detect the actual distance between the gate body 201 and the door frame body 101 in real time, and compare it with the theoretically designed distance to determine the wear degree of the guide column, so that the guide column can be replaced in time.

[0126] Example 2

[0127] As shown in FIGS. 21, 22, Figure 23 The closing process of the gate body 201 can be divided into four stages: the first stage: the gate body 201 and the door frame body 101 maintain a distance a (FIG. 21) moving stage; the second and third stages: the gate body 201 approaches the sealing section under the constraint of the guide groove 301, and the distance δ (FIG. 22) between the gate body 201 and the door frame body 101; the fourth stage: the gate body 201 compresses the sealing section under the constraint of the wedge surface.

[0128] The four stages correspond to the isolation section, the asymptotic section, the vertical section and the sealing section of the guide groove 301.

[0129] As Figure 24 shown, during the closing process of the gate body 201, the distance between the gate body 201 and the door frame body 101 changes with the stroke of the gate oil cylinder 5: the first stage (cylinder stroke 0~a): the gate body 201 and the door frame body 101 maintain a distance a moving downward, the guide column is located in the isolation section of the guide groove 301; the second stage (cylinder stroke a~b): the gate body 201 approaches the sealing section under the constraint of the guide groove 301, and the guide column is located in the asymptotic section of the guide groove 301; the third stage (cylinder stroke b~c): the gate body 201 is vertically constrained downward until the wedge surface is contacted under the constraint of the guide groove 301, and the guide column is located in the vertical section of the guide groove 301; the fourth stage (cylinder stroke c~d): the gate body 201 compresses the sealing and closes the gate under the constraint of the wedge surface, and the guide column is located in the sealing section of the guide groove 301.

[0130] The purpose of the four stages of the whole closing state is: the first stage, the gate body 201 and the door frame body 101 keep a distance a relative movement, which can avoid the wear of the sealing part; the second stage, the gate body 201 approaches the sealing part and the door frame body 101 stage, which prepares for the wedge surface of the gate body 201 to enter the wedge surface of the door frame body 101; the third stage: the gate body 201 vertically moves down stage, which prepares for the wedge surface of the gate body 201 to cooperate with the wedge surface of the door frame body 101; the fourth stage: the wedge surface constraint compression seal, which achieves the purpose of closing the gate.

[0131] Figure 25 For the relationship curve between the thrust of the gate cylinder 5 and the stroke of the gate cylinder during the closing process of the gate. The whole closing state is also divided into four stages: the first stage, the gate body 201 and the door frame body 101 keep a distance a relative movement, because the gate body 201 moves downward under the action of its own gravity at this time, the oil pressure in the small cavity is greater than that in the large cavity, and the oil cylinder thrust presents a negative value; the second stage, the gate body 201 approaches the sealing part and the door frame body 101 stage, the oil cylinder thrust changes from negative to positive, reaching D stage; the third stage: the gate body 201 vertically moves down stage, the sealing compression amount is constant, and the thrust is constant stage; the fourth stage: the gate body 201 is compressed again under the wedge surface constraint, and the thrust increases again. The whole process keeps a one-to-one correspondence between the cylinder stroke and the cylinder thrust.

[0132] As Figure 26 shown is a gate cylinder control upper computer display interface diagram, from which the stroke, oil pressure and force of all oil cylinders can be viewed in real time.

[0133] Example 3

[0134] The control logic relationship of the gate cylinder 5, the top pin pulling cylinder 6 and the bottom pin pulling cylinder 9 is as follows:

[0135] 1. Preparation action before the gate is closed: the top pin pulling cylinder 6 and the bottom pin pulling cylinder 9 are all retracted, and the gate body 201 is in an unlocked state;

[0136] 2. The gate cylinder 5 extends the gate cylinder rod, the gate body 201 descends, and the gate is closed; after the gate is closed, the bottom pin pulling cylinder 9 extends the bottom pin pulling cylinder rod and inserts it into the bottom insertion hole of the bottom ear plate 203, clamping the gate body 201; the gate body 201 is in a locked state;

[0137] 3. Preparation action before the gate is opened: the top pin pulling cylinder 6 and the bottom pin pulling cylinder 9 are all retracted, and the gate body 201 is in an unlocked state;

[0138] 4, the gate cylinder 5 gate cylinder rod retraction, the gate body 201 rises, the gate is opened, after the gate is opened, the top pin cylinder 6 top pin cylinder rod is inserted in the top ear plate 202 top insertion hole, the gate body 201 is locked

[0139] From the above, the intelligent sealing gate for shield and its control method have the following beneficial effects:

[0140] The application solves the problems of serious sealing wear and difficult to find leakage in the prior art, and provides an intelligent sealing gate for shield with high pressure bearing capacity, reduced sealing wear and real-time detection of leakage.

[0141] In the application, when the gate body is lowered and sealed in the door frame body, the compression wedge surface structure is compressed and sealed on the support wedge surface structure, the compression sealing of the gate body and the door frame body is realized through the matching wedge surface structure, the sealing of external mud pressure is realized, the driving assembly can provide downward compression force for the gate body, the sealing and leakage detection structure is compressed more tightly, and the pressure bearing capacity is ensured; during the lifting operation of the gate body, the guide column is located in the isolation section of the guide groove, the gate body is away from the door frame body, the support wedge surface structure on the gate body and the door frame body is not contacted in most of the stroke range, and the sealing wear is slowed down; the guide groove on the guide plate is opened along the set trajectory, the lifting stability of the gate body and the precise control of the movement trajectory are ensured; the sealing and leakage detection structure ensures the sealing between the door frame body and the gate body, realizes the pressure bearing capacity test and leakage detection, and further ensures the sealing of the gate; the operation of the gate body is controlled by the control part, reliable operation of the gate is realized through intelligent detection control, and the intelligent level of the application is ensured.

[0142] The above is only a specific embodiment of the application, and is not used to limit the scope of the application. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principle of the application shall fall within the scope of protection of the application.

Claims

1. A smart sealing gate for a shield tunneling machine, disposed on a front bulkhead of a shield body, characterized in that, The application relates to a door frame assembly (1) comprising a door frame body (101) provided with a supporting wedge surface structure; a gate plate assembly (2) comprising a gate plate body (201) provided with a pressing wedge surface structure; a driving assembly connected to the gate plate body (201) for driving the gate plate body (201) to lift; a guide structure comprising a guide plate (3) and a guide column, the guide plate (3) is provided with a guide groove (301) sleeved with the guide column, the guide groove (301) comprises an isolation section and a sealing section; a sealing and leakage detection structure provided on the door frame body (101) for sealing, pressure testing and leakage detection between the door frame body (101) and the gate plate body (201); the sealing and leakage detection structure comprises a sealing part, when the guide column is located in the isolation section, the pressing wedge surface structure and the supporting wedge surface structure are spaced apart, the gate plate body (201) is spaced apart from the sealing part; when the guide column is located in the sealing section, the pressing wedge surface structure is tightly sealed on the supporting wedge surface structure so that the gate plate body (201) is tightly attached to the sealing part; a control part, the driving assembly, the gate plate assembly (2) and the control part are electrically connected; the supporting wedge surface structure comprises a first top wedge surface body (102), a first middle wedge surface body (103) and a first bottom wedge surface body (104), the pressing wedge surface structure comprises a second top wedge surface body (2011), a second middle wedge surface body (2012) and a second bottom wedge surface body (2013), the second top wedge surface body (2011), the second middle wedge surface body (2012) and the second bottom wedge surface body (2013) can be tightly sealed on the first top wedge surface body (102), the first middle wedge surface body (103) and the first bottom wedge surface body (104) respectively; the guide groove (301) further comprises a gradual section and a vertical section connecting the isolation section and the sealing section; when the guide column is located in the gradual section, the gate plate body (201) is close to the door frame body (101) under the constraint of the guide groove (301); when the guide column is located in the vertical section, the gate plate body (201) vertically downwardly contacts the supporting wedge surface structure under the constraint of the guide groove (301); when the guide column enters the sealing section from the vertical section, the second top wedge surface body, the second middle wedge surface body and the second bottom wedge surface body can be tightly sealed on the first top wedge surface body (102), the first middle wedge surface body (103) and the first bottom wedge surface body (104) respectively. ​ ​ ​ ​ ​ ​ ​ The sealing part includes an air bag sealing unit (12) and a steamed bun type sealing unit (13); the door frame body (101) is provided with air bag sealing grooves (105) and steamed bun type sealing grooves (106) at intervals; the air bag sealing unit (12) is embedded in the air bag sealing groove (105); the steamed bun type sealing unit (13) is embedded in the steamed bun type sealing groove (106); a sealing groove (107) is arranged between the air bag sealing groove (105) and the steamed bun type sealing groove (106); the sealing groove (107) is used for detecting the sealing property by inflation and pressure retention or for injecting grease to block leakage; a plurality of grease interfaces (108) in communication with the sealing groove (107) are arranged on the door frame body (101) at intervals in the circumferential direction.

2. The intelligent sealing gate for a shield tunnel according to claim 1, wherein, A bottom end locking part is arranged at the bottom of the door frame body (101); when the gate plate body (201) is closed and sealed to the door frame body (101), the bottom end locking part locks the gate plate body (201) from the bottom; the bottom end locking part is electrically connected with the control part.

3. The intelligent sealing gate for a shield tunnel according to claim 1, wherein A top end locking part is arranged above the door frame body (101); when the gate plate body (201) is lifted and separated from the door frame body (101), the top end locking part locks the gate plate body (201) from the top; the top end locking part is electrically connected with the control part.

4. The intelligent sealing gate for a shield tunnel according to claim 1, wherein Two guide grooves (301) are arranged on the guide plate (3) at intervals in parallel; the two guide grooves (301) are arranged at intervals in the longitudinal and transverse directions; two guide columns are arranged at intervals on the side surface of the gate plate body (201); and the two guide columns can be respectively and slidably sleeved in the two guide grooves (301).

5. The intelligent sealing gate for a tunneling machine of claim 1, wherein, The driving assembly includes two gate oil cylinders (5) arranged in parallel in the vertical direction; each gate oil cylinder (5) is electrically connected with the control part; each gate oil cylinder (5) feeds back real-time thrust to the control part; each gate oil cylinder (5) includes a gate cylinder and a gate cylinder rod; a first hinge seat (4) is arranged above the door frame body (101) on the front partition plate of the shield body; a second hinge seat (209) is arranged at the bottom end of the gate plate body (201); the first end of the gate cylinder is hingedly connected to the first hinge seat (4); the first end of the gate cylinder rod is sealingly and penetratingly arranged through the second end of the gate cylinder; and the second end of the gate cylinder rod is hingedly connected to the second hinge seat (209).

6. The intelligent sealing gate for a tunneling machine of claim 1, wherein, At least one side of the gate plate body (201) is connected with a distance detector (207); the distance detector (207) is used for detecting the distance between the adjacent surfaces of the gate plate body (201) and the door frame body (101) in real time; and the distance detector (207) is electrically connected with the control part.

7. The intelligent sealing gate for a tunneling machine of claim 1, wherein, The guide structure further includes a guide block (15) arranged on the side surface of the gate plate body (201); the guide block (15) can slide against the guide plate (3); and the end of the guide column is provided with a guide bearing (16); and the guide bearing (16) is slidably sleeved in the guide groove (301).

8. The intelligent sealing gate for a tunneling machine of claim 2, wherein, The bottom end locking part comprises a bottom pin pulling oil cylinder (9), a bottom gate fixed seat (10), a bottom pin pulling oil cylinder fixed seat (11) and a bottom lug (203), the bottom pin pulling oil cylinder fixed seat (11) is arranged on the shield front bulkhead below the door frame body (101), the bottom pin pulling oil cylinder (9) comprises a bottom pin pulling cylinder and a bottom pin pulling cylinder rod, the bottom pin pulling cylinder is connected to the bottom pin pulling oil cylinder fixed seat (11), and the bottom pin pulling cylinder rod is arranged in abutment with the top surface of the bottom gate fixed seat (10); the bottom lug (203) is arranged at the bottom end of the gate body (201), a bottom insertion hole is arranged on the bottom lug (203), the bottom pin pulling cylinder rod can be inserted into the bottom insertion hole, and the bottom pin pulling oil cylinder (9) is electrically connected with the control part.

9. The intelligent sealing gate for a tunneling machine of claim 3, wherein, The top end locking part comprises a top pin pulling oil cylinder (6), a top gate fixed seat (7), a top pin pulling oil cylinder fixed seat (8) and a top lug (202), the top pin pulling oil cylinder fixed seat (8) is arranged on the shield front bulkhead above the door frame body (101), the top pin pulling oil cylinder (6) comprises a top pin pulling cylinder and a top pin pulling cylinder rod, the top pin pulling cylinder is connected to the top pin pulling oil cylinder fixed seat (8), and the top pin pulling cylinder rod is arranged in abutment with the bottom surface of the top gate fixed seat (7); the top lug (202) is arranged at the top end of the gate body (201), a top insertion hole is arranged on the top lug (202), the top pin pulling cylinder rod can be inserted into the top insertion hole, and the top pin pulling oil cylinder (6) is electrically connected with the control part.

10. A method of controlling the intelligent sealing gate for a shield tunneling machine according to any one of claims 1 to 9, characterized in that, Comprise: The guide groove (301) comprises an isolation section, a gradual approach section, a vertical section and a sealing section; During the opening process of the gate assembly (2), the driving assembly lifts the gate body (201), the guide column on the gate body (201) rises in the sealing section of the guide groove (301), and the pressing wedge surface structure moves away from the supporting wedge surface structure upward; the guide column enters the isolation section through the vertical section and the gradual approach section, and the gate body (201) moves away from the door frame assembly (1); the driving assembly continuously lifts the gate body (201) to open the gate; During the opening process of the gate assembly (2), the driving assembly drives the gate body (201) to descend, the guide column on the gate body (201) descends in the isolation section of the guide groove (301), and the gate body (201) descends with a horizontal distance from the door frame body (101); the guide column enters the sealing section through the gradual approach section and the vertical section, and the pressing wedge surface structure moves downward and approaches the door frame body (101), until the pressing wedge surface structure presses the supporting wedge surface structure; the gate body (201) is pressed and fitted to the sealing part, and the gate is closed.

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