Slurry discharging mechanism of shield tunneling machine

Abstract

The utility model relates to the technical field of shield tunneling machine slurry discharging, in particular to a shield tunneling machine slurry discharging mechanism which comprises a shield tunneling machine body and a slurry discharging mechanism body, the slurry discharging mechanism body comprises a slurry bin pipeline, an air cushion bin pipeline, a shell, a three-way ball, a rotating unit, a slurry discharging pipeline, a filter screen and a slurry pump, and the shield tunneling machine body is provided with a slurry bin and an air cushion bin. The three-way ball body is provided with three through holes, when the shield tunneling machine is located in a soft soil stratum without rock, the muddy water bin pipeline and the air cushion bin pipeline are opened for slurry discharging, the slurry discharging efficiency is improved, when the shield tunneling machine is located in the stratum with rock, the rotating unit is started to drive the three-way ball body to rotate, then the muddy water bin pipeline is closed, and slurry discharging is conducted only through the air cushion bin pipeline. Meanwhile, the filter screen filters stones, abrasion to the slurry pump is avoided, slurry reaches the slurry pump through the through hole of the three-way ball body and the slurry discharging pipeline, and therefore the slurry discharging requirements of the shield tunneling machine under different construction stratum conditions can be met, and the slurry discharging bin position is adjusted according to environment changes.

Description

Technical Field

[0001] The utility model relates to the technical field of shield machine mud discharge, in particular to a shield machine mud discharge mechanism. Background Art

[0002] During the construction of shield machines, a large amount of mud will be produced. In order to improve the construction efficiency of the shield machine, the mud needs to be discharged to avoid blockage. The current traditional method is manual cleaning, which is inefficient and low in safety.

[0003] The prior art patent CN108625877A discloses a shield machine vacuum slurry extraction system, including a mud tank, an air storage component, a slurry suction component and a control component; the air storage component includes a motor, a reversing valve, a vacuum pump and an air storage tank, the motor is connected to the vacuum pump, the air inlet end of the vacuum pump is connected to the air suction port of the mud tank through the reversing valve, the air outlet end of the vacuum pump is connected to the air inlet of the air storage tank, and the exhaust port of the air storage tank is connected to the air suction port of the mud tank through the reversing valve; the slurry suction component includes a guide rail, a sliding trolley, a slurry suction pipe, a telescopic arm and a slurry suction head; the control component includes a control box, an air pressure sensor, a detection probe, an air guide pipe and a solenoid valve, which can automatically detect whether there is mud water accumulation, and automatically suck and empty the mud water, to ensure the cleanliness of the tunnel in the working area, and also effectively protect the mechanical equipment.

[0004] However, in the aforementioned prior art, when the shield machine works in a rocky stratum, a large number of stones will exist in the mud, which will cause wear to the mud pump during slurry discharge, and the slurry cannot be discharged quickly in a stratum without rocks. Therefore, the slurry discharge requirements of the shield machine under different construction stratum conditions cannot be met. Utility Model Content

[0005] The purpose of the utility model is to provide a slurry discharge mechanism for a shield machine, which solves the problem in the prior art that when the shield machine works in a rocky stratum, a large number of stones will be present in the mud, which will cause wear to the mud pump during slurry discharge, while the slurry cannot be discharged quickly in a stratum without rock, and thus the slurry discharge needs of the shield machine under different construction stratum conditions cannot be met.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a slurry discharge mechanism of a shield machine, comprising a shield machine body and a slurry discharge mechanism;

[0007] The slurry discharge mechanism includes a mud and water bin pipeline, an air cushion bin pipeline, a shell, a three-way sphere, a rotating unit, a slurry discharge pipeline, a filter screen and a mud pump. The shield machine body has a mud and water bin and an air cushion bin. The three-way sphere has three through holes, and the three through holes are interconnected. One end of the mud and water bin pipeline is connected to the mud and water bin, and one end of the air cushion bin pipeline is connected to the air cushion bin. The other end of the mud and water bin pipeline passes through the air cushion bin and is connected to the shell. The other end of the air cushion bin pipeline is connected to the shell. The mud and water bin pipeline and the air cushion bin pipeline are symmetrically arranged on both sides of the shell. The mud pump is arranged inside the shield machine body. The two ends of the slurry discharge pipeline are respectively connected to one end of the shell and the mud pump. The rotating unit is arranged on the shell and the three-way sphere, and the filter screen is arranged inside the mud and water bin.

[0008] Wherein, the slurry discharge mechanism further includes three sealing rings, which are all fixedly connected to the shell and are all located on the inner wall of the shell, and each of the sealing rings is mutually adapted to any of the through holes.

[0009] Among them, the rotating unit includes a motor and a rotating shaft. The motor is arranged inside the shield machine body. One end of the rotating shaft is fixedly connected to the output end of the motor, and the other end of the rotating shaft passes through the shell and is fixedly connected to the three-way sphere.

[0010] Wherein, the shield machine slurry discharge mechanism also includes two locking components, and the two locking components are symmetrically arranged on both sides of the rotating shaft.

[0011] Wherein, the locking assembly includes a fixed plate, a cylinder and a clamping plate, the fixed plate is fixedly connected to the shell and is located on one side of the shell, the cylinder is fixedly connected to the fixed plate and is located on one side of the fixed plate, and the output end of the cylinder is fixedly connected to the clamping plate.

[0012] The utility model discloses a slurry discharge mechanism for a shield machine. When the shield machine is in a soft soil layer without rocks, the mud and water bin pipeline and the air cushion bin pipeline are both opened to discharge slurry, thereby improving the slurry discharge efficiency. When the shield machine is in a layer with rocks, the rotating unit is started to drive the three-way ball to rotate, thereby closing the mud and water bin pipeline, and only discharging slurry through the air cushion bin pipeline. At the same time, the filter screen filters the stones to avoid wear on the mud pump. The mud passes through the through hole of the three-way ball and the slurry discharge pipeline to reach the mud pump. The above-mentioned structural arrangement can meet the slurry discharge needs of the shield machine under different construction layer conditions, and the slurry discharge bin position can be adjusted according to environmental changes, which is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0014] Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the utility model.

[0015] Figure 2 It is an overall cross-sectional view of the first embodiment of the utility model.

[0016] Figure 3 The utility model Figure 2 AA line section view.

[0017] Figure 4 The utility model Figure 1 Enlarged view of the local structure at point B.

[0018] Figure 5 The utility model Figure 2 Enlarged view of the local structure at location C.

[0019] Figure 6 It is a schematic diagram of the overall structure of the second embodiment of the utility model.

[0020] Figure 7 The utility model Figure 6 Enlarged view of the local structure at D.

[0021] 101-shield machine body, 102-mud and water bin pipeline, 103-air cushion bin pipeline, 104-shell, 105-tee ball, 106-slurry discharge pipeline, 107-filter screen, 108-mud pump, 109-mud and water bin, 110-air cushion bin, 111-through hole, 112-sealing ring, 113-motor, 114-rotating shaft, 201-fixed plate, 202-cylinder, 203-clamping plate. DETAILED DESCRIPTION

[0022] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0023] First embodiment:

[0024] See also Figures 1 to 5 ,in Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the utility model. Figure 2 is a sectional view of the whole of the first embodiment of the utility model, Figure 3 The utility model Figure 2 AA line section view, Figure 4 The utility model Figure 1 The enlarged view of the local structure at B, Figure 5 The utility model Figure 2 Enlarged view of the local structure at location C.

[0025] The utility model provides a slurry discharge mechanism for a shield machine, comprising a shield machine body 101 and a slurry discharge mechanism, wherein the slurry discharge mechanism comprises a mud and water bin pipeline 102, an air cushion bin pipeline 103, a shell 104, a three-way ball 105, a rotating unit, a slurry discharge pipeline 106, a mud pump 108, a filter screen 107 and three sealing rings 112, the shield machine body 101 has a mud and water bin 109 and an air cushion bin 110, the three-way ball 105 has three through holes 111, and the rotating unit comprises a motor 113 and a rotating shaft 114.

[0026] According to this specific embodiment, when the shield machine is in a soft soil layer without rocks, the mud and water bin pipe 102 and the air cushion bin pipe 103 are both opened to discharge slurry and improve the slurry discharge efficiency. When it is located in a layer with rocks, the motor 113 is started to drive the rotating shaft 114 to rotate, and drive the three-way ball 105 to rotate, thereby adjusting the positions of the three through holes 111, so that the mud and water bin pipe 102 does not have the through hole 111, and slurry cannot be discharged. Slurry is only discharged through the air cushion bin pipe 103. At the same time, the filter screen 107 filters the stones to avoid wear on the mud pump 108. The mud passes through the through hole 111 of the three-way ball 105 and the slurry discharge pipe 106 to reach the mud pump 108.

[0027] The shield machine body 101 has a mud and water bin 109 and an air cushion bin 110, the three-way sphere 105 has three through holes 111, and the three through holes 111 are connected to each other. One end of the mud and water bin pipe 102 is connected to the mud and water bin 109, and one end of the air cushion bin pipe 103 is connected to the air cushion bin 110. The other end of the mud and water bin pipe 102 passes through the air cushion bin 110 and is connected to the shell 104. The other end of the air cushion bin pipe 103 is connected to the shell 104. The end is connected with the shell 104, the mud and water bin pipeline 102 and the air cushion bin pipeline 103 are symmetrically arranged on both sides of the shell 104, the mud pump 108 is arranged inside the shield machine body 101, and the two ends of the slurry discharge pipeline 106 are respectively connected with one end of the shell 104 and the mud pump 108, the rotating unit is arranged on the shell 104 and the three-way ball 105, and the filter screen 107 is arranged inside the mud and water bin 109. When the shield machine is in a soft soil layer without rocks, the mud and water bin pipe 102 and the air cushion bin pipe 103 are both opened to discharge slurry and improve the slurry discharge efficiency. When it is in a layer with rocks, the rotating unit is started to drive the three-way ball 105 to rotate, and then the mud and water bin pipe 102 is closed, and the slurry is only discharged through the air cushion bin pipe 103. At the same time, the filter screen 107 filters the stones to avoid wear on the mud pump 108. The mud passes through the through hole 111 of the three-way ball 105 and the slurry discharge pipe 106 to reach the mud pump 108. This can meet the slurry discharge needs of the shield machine under different construction layer conditions, and adjust the slurry discharge position according to environmental changes, which is more convenient to use.

[0028] Secondly, the three sealing rings 112 are fixedly connected to the housing 104 and are located on the inner wall of the housing 104, and each sealing ring 112 is mutually adapted with any through hole 111. The sealing ring 112 seals between the housing 104 and the three-way ball 105 to prevent mud leakage.

[0029] At the same time, the motor 113 is arranged inside the shield machine body 101, one end of the rotating shaft 114 is fixedly connected to the output end of the motor 113, and the other end of the rotating shaft 114 passes through the housing 104 and is fixedly connected to the three-way sphere 105. When the motor 113 is started, the rotating shaft 114 is driven to rotate, and the three-way sphere 105 is driven to rotate, thereby adjusting the positions of the three through holes 111, so that the mud and water tank pipeline 102 does not have the through hole 111, and the slurry cannot be discharged.

[0030] When using the utility model for slurry discharge, when the shield machine is in a soft soil layer without rocks, the mud and water bin pipe 102 and the air cushion bin pipe 103 are both opened to discharge slurry and improve the slurry discharge efficiency. When it is located in a layer with rocks, the motor 113 is started to drive the rotating shaft 114 to rotate, and drive the three-way ball 105 to rotate, thereby adjusting the positions of the three through holes 111, so that the mud and water bin pipe 102 does not have the through hole 111, and slurry discharge cannot be carried out. Slurry is only discharged through the air cushion bin pipe 103. At the same time, the filter screen 107 filters the stones to avoid wear on the mud pump 108. The mud passes through the through hole 111 of the three-way ball 105 and the slurry discharge pipe 106 to reach the mud pump 108. Through the above-mentioned structural arrangement, the slurry discharge needs of the shield machine under different construction layer conditions can be met, and the slurry discharge bin position can be adjusted according to environmental changes, which is more convenient to use.

[0031] Second embodiment:

[0032] Based on the first embodiment, please refer to Figure 6 and Figure 7 ,in Figure 6 It is a schematic diagram of the overall structure of the second embodiment of the utility model. Figure 7 The utility model Figure 6 Enlarged view of the local structure at D.

[0033] The utility model provides a slurry discharge mechanism for a shield machine, which also includes two locking components. The locking components include a fixing plate 201 , a cylinder 202 and a clamping plate 203 .

[0034] According to this specific embodiment, after the three-way ball 105 is adjusted, the cylinder 202 is started to drive the clamping plate 203 to move and clamp the rotating shaft 114 to fix it, thereby locking the rotating shaft 114 to prevent the three-way ball 105 from rotating accidentally.

[0035] The two locking components are symmetrically arranged on both sides of the rotating shaft 114. The locking components lock the rotating shaft 114 to prevent the three-way ball 105 from rotating by mistake.

[0036] Secondly, the fixing plate 201 is fixedly connected to the housing 104 and is located on one side of the housing 104. The cylinder 202 is fixedly connected to the fixing plate 201 and is located on one side of the fixing plate 201. The output end of the cylinder 202 is fixedly connected to the clamping plate 203. The fixing plate 201 supports the cylinder 202. When the cylinder 202 is started, it drives the clamping plate 203 to move and clamp the rotating shaft 114.

[0037] When the utility model is used for slurry discharge, after the three-way ball 105 is adjusted, the cylinder 202 is started to drive the clamping plate 203 to move and clamp the rotating shaft 114 to fix it, thereby locking the rotating shaft 114 to prevent the three-way ball 105 from rotating accidentally.

[0038] What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A shield machine slurry discharge mechanism, comprising a shield machine body, characterized in that: Also includes a slurry discharge mechanism; The slurry discharge mechanism includes a mud and water bin pipeline, an air cushion bin pipeline, a shell, a three-way sphere, a rotating unit, a slurry discharge pipeline, a filter screen and a mud pump. The shield machine body has a mud and water bin and an air cushion bin. The three-way sphere has three through holes, and the three through holes are interconnected. One end of the mud and water bin pipeline is connected to the mud and water bin, and one end of the air cushion bin pipeline is connected to the air cushion bin. The other end of the mud and water bin pipeline passes through the air cushion bin and is connected to the shell. The other end of the air cushion bin pipeline is connected to the shell. The mud and water bin pipeline and the air cushion bin pipeline are symmetrically arranged on both sides of the shell. The mud pump is arranged inside the shield machine body. The two ends of the slurry discharge pipeline are respectively connected to one end of the shell and the mud pump. The rotating unit is arranged on the shell and the three-way sphere, and the filter screen is arranged inside the mud and water bin.

2. The shield machine slurry discharge mechanism according to claim 1, characterized in that: The pulp discharge mechanism also includes three sealing rings, which are all fixedly connected to the shell and are located on the inner wall of the shell. Each of the sealing rings is mutually adapted with any of the through holes.

3. The shield machine slurry discharge mechanism according to claim 2, characterized in that: The rotating unit includes a motor and a rotating shaft. The motor is arranged inside the shield machine body. One end of the rotating shaft is fixedly connected to the output end of the motor. The other end of the rotating shaft passes through the shell and is fixedly connected to the three-way sphere.

4. The shield machine slurry discharge mechanism according to claim 3, characterized in that: The shield machine slurry discharge mechanism also includes two locking components, and the two locking components are symmetrically arranged on both sides of the rotating shaft.

5. The shield machine slurry discharge mechanism according to claim 4, characterized in that: The locking assembly includes a fixing plate, a cylinder and a clamping plate. The fixing plate is fixedly connected to the shell and is located on one side of the shell. The cylinder is fixedly connected to the fixing plate and is located on one side of the fixing plate. The output end of the cylinder is fixedly connected to the clamping plate.

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