Earth pressure balance type shield tunneling machine excavation bin gate

Abstract

The utility model discloses an earth pressure balance type shield tunneling machine excavation bin gate, and belongs to the technical field of tunnel shield tunneling machines. The door comprises a door frame and a door plate, and is characterized in that the door plate is located on one side of the door frame, a plurality of locking blocks are distributed on the inner ring wall of the door frame, and handle rotating mechanisms are arranged at the positions, corresponding to the locking blocks, of one side of the door plate; the handle rotating mechanism can be mutually locked with or separated from the locking block through actions, so that the door plate and the door frame are locked or unlocked, a rotating arm hinge mechanism is hinged to the door frame and the side face of the door plate, and when the door plate is opened and closed, the rotating arm hinge mechanism is hinged to the door frame and the side face of the door plate. The rotating arm hinge mechanism can rotate around the door frame and the door plate and can be folded, opened and closed by itself. The device is safer, more reliable, higher in efficiency and simple in structure.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel shield machines, and in particular relates to an excavation chamber gate of an earth pressure balance shield machine. Background Art

[0002] The shield construction method has been increasingly widely used in the construction of many engineering projects such as municipal integrated pipe corridors, modern urban subways, intercity railways and highways due to its safety, speed and efficiency. The blade of the shield tool directly contacts the soil and rock, and the tool will be excessively worn. In order to prevent the excessive wear of the tool from affecting the progress of the project or causing safety accidents, it is necessary to open the warehouse to replace the tool. When the shield machine is excavating in soft rock and water-rich areas, due to the poor self-stabilization ability of the stratum, it is necessary to use the shield machine itself and supporting equipment to provide a certain pressure to stabilize the stratum. At this time, the operator must enter the warehouse with pressure. Due to the great differences in geological conditions in various regions, the shield machine may need to frequently replace the tool during construction, and the construction personnel need to frequently enter the excavation warehouse to work. The sealing and safety of the gate at the entrance of the channel are key equipment to ensure the safety of construction personnel and improve construction efficiency.

[0003] The Chinese utility model patent "A quick-opening sealed front hatch door of a pipe jacking machine" (publication number CN206329344U) discloses a quick-opening sealed front hatch door of a pipe jacking machine. The opening direction of the door panel of the device in this patent is from the excavation chamber to the transition chamber. When the pressure in the excavation chamber and the transition chamber is unbalanced, if the passage door is opened rashly, an accident injuring people may occur due to the door panel.

[0004] China's invention patent "A new channel door device suitable for full-section tunnel boring machines" (publication number CN109707286A) discloses a new channel door device suitable for full-section tunnel boring machines. The structure of this patent is too complicated and the cost is relatively high.

[0005] Therefore, developing a passage door design with simple structure, safety, reliability and convenient operation has always been a problem to be solved urgently. Utility Model Content

[0006] The utility model aims at the above problems, makes up for the deficiencies of the prior art, and provides an earth pressure balance shield machine excavation chamber gate; the utility model is safer and more reliable, has higher efficiency, and has a simple structure.

[0007] To achieve the above purpose, the utility model adopts the following technical solutions.

[0008] The utility model provides an earth pressure balance shield machine excavation chamber gate, comprising a door frame and a door panel, and is characterized in that the door panel is located on one side of the door frame, a plurality of locking blocks are distributed on the inner ring wall of the door frame, a handle rotating mechanism is provided on one side of the door panel at a position corresponding to each of the locking blocks, the handle rotating mechanism can be locked or separated with the locking blocks through action, thereby locking or unlocking the door panel and the door frame, a swing arm hinge mechanism is hinged on the door frame and the side surface of the door panel, and when the door panel is opened and closed, the swing arm hinge mechanism can rotate around the door frame and the door panel and fold and open and close itself.

[0009] Furthermore, the handle rotation mechanism includes a rotating shaft, a handle, a bolt, a first key, a second key, a disc spring, and a pressure plate. The rotating shaft is rotatably installed on the side edge of the door panel through the pressure plate and the bolt. The bolt, the disc spring, and the handle are sequentially mounted on the rotating shaft from near to far from the door panel, and then a nut is screwed on. The handle is connected to the rotating shaft through the first key, and the bolt is connected to the rotating shaft through the second key. A beveled surface and a blocking surface are provided on the locking block. The protruding end of the bolt can be clamped on the locking block along the beveled surface and blocked by the blocking surface. The handle rotation mechanism and the locking block are locked to each other through the compression effect of the disc spring.

[0010] Furthermore, bolt holes are correspondingly arranged on the end of the door bolt and the locking block. When the door bolt is clamped on the locking block, a locking bolt can be connected by simultaneously passing through the corresponding bolt holes on the door bolt and the locking block.

[0011] Furthermore, an oil passage is provided in the rotating shaft and passes through the end of the rotating shaft to the door panel, and a lubricating oil cup communicating with the oil passage is connected to the end of the rotating shaft.

[0012] Furthermore, the swing arm articulated mechanism includes a swing arm seat, a first swing arm, a second swing arm, a support, and a hinge block, the swing arm seat is fixed on the inner ring wall of the door frame, the first swing arm is hinged on the swing arm seat, the support is fixed on the side of the door panel, the hinge block is fixedly connected to the support, and the second swing arm is hinged to the hinge block and the first swing arm at the same time.

[0013] Furthermore, the first swing arm end is connected to the swing arm seat through a first connecting shaft, the first connecting shaft passes through the first swing arm end and is inserted into the swing arm seat, the first connecting shaft is screwed with a nut on the outer side of the first swing arm, a first steel ball is arranged between the end of the first connecting shaft inserted into the swing arm seat and the inner end of the swing arm seat, and a first joint bearing is arranged between the first connecting shaft part in the swing arm seat and the inner side wall of the swing arm seat.

[0014] Furthermore, the end of the second swing arm is connected to both ends of the hinge block through a second connecting shaft, the second connecting shaft passes through the end of the second swing arm and is inserted into the hinge block, the second connecting shaft is screwed with a nut on the outer side of the second swing arm, a second steel ball is arranged between the end of the second connecting shaft inserted into the hinge block and the inner end of the hinge block, and a second joint bearing is arranged between the second connecting shaft part in the hinge block and the inner wall of the hinge block.

[0015] Furthermore, a plurality of stoppers are circumferentially connected to the side surface of the door panel, and when the door panel is closed, the outer side surfaces of the stoppers are close to the inner annular wall of the door frame.

[0016] Furthermore, a lip sealing ring is provided on the outer periphery of the side surface of the door panel at a position corresponding to the side surface of the door frame, for sealing between the door panel and the door frame when the door panel is closed.

[0017] Furthermore, a handle is provided on the door panel.

[0018] The beneficial effects of the utility model.

[0019] The utility model has the advantages of simple structure, compactness, safety and reliability. After being installed on the front shield, it can ensure that the opening direction is from the transition chamber to the excavation chamber, and the passage door cannot be opened when the pressure between the excavation chamber and the transition chamber is unbalanced, thereby ensuring the personal safety of construction personnel and can be widely used in the field of shield machine technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementation methods described here are only used to explain the utility model and are not used to limit the utility model.

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0022] Figure 2 It is a main structural schematic diagram of the utility model.

[0023] Figure 3 This utility model Figure 2 Schematic diagram of the AA section structure.

[0024] Figure 4 It is an enlarged structural schematic diagram of the matching position of the lock block and the door latch of the utility model.

[0025] Figure 5 This utility model Figure 2 Schematic diagram of the BB cross-sectional structure.

[0026] Figure 6 This utility model Figure 2 Schematic diagram of the CC cross-sectional structure.

[0027] Figure 7 This utility model Figure 2 Schematic diagram of the DD-direction cross-sectional structure.

[0028] Figure 8 It is a schematic diagram of the utility model after being installed on a shield machine.

[0029] Markings in the figure: 1 is a door frame, 2 is a door panel, 3 is a locking block, 4 is a handle rotating mechanism, 5 is a swing arm articulated mechanism, 6 is a handle, 7 is a bevel surface, 8 is a blocking surface, 9 is a locking bolt, 10 is a blocking block, 11 is a lip sealing ring, 12 is a front shield, 13 is an excavation chamber, 14 is a transition chamber, 401 is a rotating shaft, 402 is a handle, 403 is a door latch, 404 is a first key, 405 is a second key, 406 is a disc spring, 407 is a pressure plate, 408 is an oil circuit, 409 is a lubricating oil cup, 501 is a swing arm seat, 502 is a first swing arm, 503 is a second swing arm, 504 is a support, 505 is a hinge block, 506 is a first connecting shaft, 507 is a first steel ball, 508 is a first joint bearing, 509 is a second connecting shaft, 510 is a second steel ball, and 511 is a second joint bearing. DETAILED DESCRIPTION

[0030] As shown in the accompanying drawings, this embodiment provides an earth pressure balance shield machine excavation chamber gate, including a door frame 1 and a door panel 2, wherein the door panel 2 is located on one side of the door frame 1.

[0031] A plurality of locking blocks 3 are distributed on the inner ring wall of the door frame 1, and a handle rotating mechanism 4 is provided on one side of the door panel 2 at a position corresponding to each locking block 3. The handle rotating mechanism 4 can lock or separate with the locking block 3 through movement, thereby locking or unlocking the door panel 2 and the door frame 1.

[0032] The handle rotating mechanism 4 includes a rotating shaft 401, a handle 402, a latch 403, a first key 404, a second key 405, a disc spring 406, and a pressure plate 407. The rotating shaft 401 is rotatably installed on the side edge of the door panel 2 through the pressure plate 407 and the bolt. The latch 403, the disc spring 406, and the handle 402 are sequentially mounted on the rotating shaft 401 from near to far from the door panel 2, and then the nut is screwed on. The handle 402 is connected to the rotating shaft 401 through the first key 404, and the latch 403 is connected to the rotating shaft 401 through the second key 405.

[0033] An oil circuit 408 is provided in the rotating shaft 401, which runs through the end of the rotating shaft 401 to the door panel 2. The end of the rotating shaft 401 is connected to a lubricating oil cup 409 which is connected to the oil circuit 408. By filling lubricating oil into the lubricating oil cup 409, the handle rotating mechanism 4 can rotate flexibly to prevent rust and jamming for a long time.

[0034] The lock block 3 is provided with an inclined surface 7 and a blocking surface 8. The protruding end of the door latch 403 can be stuck on the lock block 3 along the inclined surface 7 and blocked by the blocking surface 8. The blocking surface 8 prevents the door latch 403 from moving excessively and falling out. The handle rotation mechanism 4 and the lock block 3 are locked with each other through the compression effect of the disc spring 406.

[0035] Bolt holes are provided at the ends of the door latch 403 and on the lock block 3 accordingly. When the door latch 403 is stuck on the lock block 3, the locking bolt 9 can be connected through the corresponding bolt holes on the door latch 403 and the lock block 3 at the same time to lock the door panel 2 and the door frame 1.

[0036] By rotating the handle 402, the shaft 401 and the latch 403 can rotate simultaneously. During the closing process of the door panel 2, the handle 402 is rotated to make the latch rotate accordingly. After the protruding end of the latch 403 moves to the position of the beveled surface 7 of the lock block 3, the latch 403 as a whole moves up with the beveled surface 7 and squeezes the disc spring 406. After the latch 403 moves to the upper plane of the lock block 3, the disc spring 406 is in a compressed state, causing the latch 403 and the lock block 3 to be squeezed against each other. To prevent the latch 403 from accidentally moving, the locking bolt 9 can be screwed on to lock the latch 403 and the lock block 3, thereby locking the door panel 2 and the door frame 1; during the opening process of the door panel 2, the locking bolt 9 is first unscrewed, and then the handle 402 is rotated in the opposite direction to make the latch 403 rotate and move down with the beveled surface 7 of the lock block 3 and escape from the lock block 3 to achieve unlocking.

[0037] A swing arm hinge mechanism 5 is hinged on the door frame 1 and the side of the door panel 2. The swing arm hinge mechanism 5 includes a swing arm seat 501, a first swing arm 502, a second swing arm 503, a support 504, and a hinge block 505. The swing arm seat 501 is fixed on the inner ring wall of the door frame 1, the first swing arm 502 is hinged on the swing arm seat 501, the support 504 is fixed on the side of the door panel 2, the hinge block 505 is fixedly connected to the support 504, and the second swing arm 503 is hinged to the hinge block 505 and the first swing arm 502 at the same time.

[0038] The end of the first swing arm 502 is connected to the swing arm seat 501 through the first connecting shaft 506. The first connecting shaft 506 passes through the end of the first swing arm 502 and is inserted into the swing arm seat 501. The first connecting shaft 506 is screwed with a nut on the outer side of the first swing arm 502. A first steel ball 507 is arranged between the end of the first connecting shaft 506 inserted into the swing arm seat 501 and the inner end of the swing arm seat 501. A first joint bearing 508 is arranged between the part of the first connecting shaft 506 in the swing arm seat 501 and the inner wall of the swing arm seat 501.

[0039] The end of the second swing arm 503 is connected to both ends of the hinge block 505 through a second connecting shaft 509. The second connecting shaft 509 passes through the end of the second swing arm 503 and is inserted into the hinge block 505. A nut is screwed on the outer side of the second swing arm 503. A second steel ball 510 is arranged between the end of the second connecting shaft 509 inserted into the hinge block 505 and the inner end of the hinge block 505. A second joint bearing 511 is arranged between the second connecting shaft 509 part in the hinge block 505 and the inner wall of the hinge block 505.

[0040] The spatial position of the door panel 2 can be accurately adjusted through the structure of the first connecting shaft 506, the first steel ball 507, the first joint bearing 508, the second connecting shaft 509, the second steel ball 510, and the second joint bearing 511 to better ensure the sealing between the door frame 1 and the door panel 2.

[0041] When the door panel 2 is opened and closed, the swing arm hinge mechanism 5 can rotate around the door frame 1 and the door panel 2 and perform a folding opening and closing action.

[0042] A plurality of blocks 10 are circumferentially connected to the side of the door panel 2. When the door panel 2 is closed, the outer side of the block 10 is close to the inner ring wall of the door frame 1. After the door panel 2 is closed, the block 10 can further stabilize the door panel 2 to prevent the door panel 2 from being hit or lifted by falling rocks and soil in the excavation chamber 13 for a long time, thereby preventing a gap from forming between the door panel 2 and the door frame 1 and affecting the sealing and firmness.

[0043] A lip sealing ring 11 is provided on the outer periphery of the side of the door panel 2 at a position corresponding to the side of the door frame 1, for further sealing between the door panel 2 and the door frame 1 when the door panel 2 is closed.

[0044] The door panel 2 is also provided with a handle 6 for easy operation.

[0045] The working principle and operation method of this gate are as follows.

[0046] like Figure 8 As shown in the figure, the gate is installed at the front shield 12 of the shield machine, which is the only passage from the transition chamber 14 of the shield machine to the cutter head excavation chamber 13. There is a certain soil pressure and air pressure in the excavation chamber 13 to ensure the stability of the excavation surface. If the sealing effect of the gate device is not good, it is easy to cause the transition chamber 14 to be filled with mud and water, and even cause the excavation surface to collapse. At the same time, the gate is also a safety protection device for maintenance personnel to enter the excavation chamber 13.

[0047] The gate is operated as follows: when the pressure between the excavation chamber 13 and the transition chamber 14 reaches a balance, the operator can turn each handle 402 in turn, and the rotation of the handle 402 drives the rotating shaft 401 and the latch 403 to rotate in turn, so that the latch 403 is free from the movement restriction of the lock block 3, and then push the handle 6 to open the passage door in the direction of the excavation chamber 13, and operate the handle 402 in the reverse direction to close the passage door.

[0048] It can be understood that the above specific description of the utility model is only used to illustrate the utility model and is not limited to the technical solution described in the implementation mode of the utility model. Ordinary technicians in the field should understand that the utility model can still be modified or replaced by equivalents to achieve the same technical effect; as long as the use requirements are met, they are within the protection scope of the utility model.

Claims

1. An earth pressure balance shield machine excavation chamber gate, comprising a door frame (1) and a door panel (2), characterized in that: The door panel (2) is located on one side of the door frame (1); a plurality of locking blocks (3) are distributed on the inner ring wall of the door frame (1); a handle rotating mechanism (4) is provided on one side of the door panel (2) at a position corresponding to each of the locking blocks (3); the handle rotating mechanism (4) can be locked or separated with the locking block (3) by action, thereby locking or unlocking the door panel (2) and the door frame (1); a swing arm hinge mechanism (5) is hingedly connected to the door frame (1) and the side of the door panel (2); when the door panel (2) is opened or closed, the swing arm hinge mechanism (5) can rotate around the door frame (1) and the door panel (2) and perform a folding opening and closing action.

2. The excavation chamber gate of an earth pressure balance shield machine according to claim 1, characterized in that: The handle rotating mechanism (4) comprises a rotating shaft (401), a handle (402), a door bolt (403), a first key (404), a second key (405), a disc spring (406), and a pressure plate (407); the rotating shaft (401) is rotatably mounted on the side edge of the door panel (2) via the pressure plate (407) and a bolt; the door bolt (403), the disc spring (406), and the handle (402) are sequentially sleeved on the rotating shaft (401) from near to far from the door panel (2), and then a nut is screwed on; The handle (402) is connected to the rotating shaft (401) via the first key (404), the bolt (403) is connected to the rotating shaft (401) via the second key (405), the locking block (3) is provided with an inclined surface (7) and a blocking surface (8), the protruding end of the bolt (403) can be clamped on the locking block (3) along the inclined surface (7) and blocked by the blocking surface (8), and the handle rotating mechanism (4) and the locking block (3) are locked to each other through the compression effect of the disc spring (406).

3. The excavation chamber gate of an earth pressure balance shield machine according to claim 2, characterized in that: Bolt holes are correspondingly arranged at the ends of the door bolt (403) and on the locking block (3); when the door bolt (403) is clamped on the locking block (3), a locking bolt (9) can be simultaneously connected through the corresponding bolt holes on the door bolt (403) and the locking block (3).

4. The excavation chamber gate of an earth pressure balance shield machine according to claim 2, characterized in that: An oil passage (408) is provided in the rotating shaft (401) and passes through the end of the rotating shaft (401) to the door panel (2). The end of the rotating shaft (401) is connected to a lubricating oil cup (409) that is in communication with the oil passage (408).

5. The excavation chamber gate of an earth pressure balance shield machine according to claim 1, characterized in that: The swing arm hinge mechanism (5) comprises a swing arm seat (501), a first swing arm (502), a second swing arm (503), a support (504), and a hinge block (505); the swing arm seat (501) is fixed to the inner ring wall of the door frame (1); the first swing arm (502) is hinged to the swing arm seat (501); the support (504) is fixed to the side of the door panel (2); the hinge block (505) is fixedly connected to the support (504); and the second swing arm (503) is hinged to the hinge block (505) and the first swing arm (502) at the same time.

6. The excavation chamber gate of an earth pressure balance shield machine according to claim 5, characterized in that: The end of the first swing arm (502) is connected to the swing arm seat (501) via a first connecting shaft (506); the first connecting shaft (506) passes through the end of the first swing arm (502) and is inserted into the swing arm seat (501); a nut is screwed onto the outer side of the first swing arm (502); a first steel ball (507) is arranged between the end of the first connecting shaft (506) inserted into the swing arm seat (501) and the inner end of the swing arm seat (501); and a first joint bearing (508) is arranged between the first connecting shaft (506) portion in the swing arm seat (501) and the inner side wall of the swing arm seat (501).

7. The excavation chamber gate of an earth pressure balance shield machine according to claim 5, characterized in that: The end of the second swing arm (503) is connected to the two ends of the hinge block (505) via a second connecting shaft (509); the second connecting shaft (509) passes through the end of the second swing arm (503) and is inserted into the hinge block (505); a nut is screwed onto the outer side of the second swing arm (503); a second steel ball (510) is arranged between the end of the second connecting shaft (509) inserted into the hinge block (505) and the inner end of the hinge block (505); and a second joint bearing (511) is arranged between the part of the second connecting shaft (509) in the hinge block (505) and the inner wall of the hinge block (505).

8. The excavation chamber gate of an earth pressure balance shield machine according to claim 1, characterized in that: A plurality of stoppers (10) are circumferentially connected to the side surface of the door panel (2); when the door panel (2) is closed, the outer side surfaces of the stoppers (10) are close to the inner annular wall of the door frame (1).

9. The excavation chamber gate of an earth pressure balance shield machine according to claim 1, characterized in that: A lip-shaped sealing ring (11) is provided on the outer periphery of the side of the door panel (2) at a position corresponding to the side of the door frame (1), and is used for sealing between the door panel (2) and the door frame (1) when the door panel (2) is closed.

10. The excavation chamber gate of an earth pressure balance shield machine according to claim 1, characterized in that: The door panel (2) is also provided with a handle (6).

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