Shield tunneling machine cutterhead mud cake cleaning device

Abstract

The utility model belongs to the technical field of shield tunneling machines, and relates to a mud cake cleaning device for a cutter head of a shield tunneling machine. A cutter head of the mechanism is positioned in front of the soil bin partition plate; the mud cake cleaning device is provided with a thrust oil cylinder; a cylinder barrel of the thrust cylinder is mounted on a soil bin partition plate of the shield tunneling machine; the end of a piston rod of the thrust cylinder is connected with a push plate used for cleaning a mud cake on the cutterhead, and after the piston rod of the thrust cylinder stretches, the push plate at the end acts on the end face of the cutterhead; the push plate is provided with a base, and the base is fixed at the end of a piston rod of the thrust cylinder; the base is provided with a panel which is consistent with an opening of the cutter head in shape and size, and a triangular guide block is arranged in the middle of the panel; a pressure detector is installed at the rear end of the thrust oil cylinder, a control line of the pressure detector is connected with the operation table, the thrust oil cylinder is connected with an oil pipe, and the oil pipe is connected with the valve block. The design is simple and practical in structure, convenient to use, safe and reliable, and can be widely popularized and used.

Description

Technical Field

[0001] The utility model belongs to the technical field of shield machines, and in particular relates to a shield machine cutter head mud cake cleaning device. Background Art

[0002] In recent years, with the development of the economy, tunnel engineering and rail transit have grown rapidly, and shield construction methods have also been widely promoted and used in tunnel engineering. When the shield machine is excavating clay, silt and other strata, the cutterhead opening is easily blocked by clay, forcing the cutterhead excavation capacity to decrease, seriously affecting the excavation speed. At the same time, the thrust and torque of the shield machine increase, and the amount of slag discharge decreases; in the existing construction, the treatment methods for the mud cake on the cutterhead mainly include soaking in foaming agents, dispersants, etc., which are not only costly, time-consuming, and ineffective; in severe cases, manual pressure is required to enter the soil bin for excavation. The process of entering the bin under pressure is complicated, the labor intensity is high, and the risk is high; therefore, not satisfied with the existing technology, a shield machine cutterhead mud cake cleaning device is proposed in a different way. Utility Model Content

[0003] The utility model aims to provide a shield machine cutter disc mud cake cleaning device to solve the problems that the existing shield machine cutter disc mud cake cleaning requires solvent soaking or manual excavation.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A device for cleaning mud cakes on the cutter disc of a shield machine, wherein the cutter disc of the shield machine is located in front of a soil bin partition; the device is characterized in that: the mud cake cleaning device comprises a thrust cylinder; the cylinder barrel of the thrust cylinder is mounted on the soil bin partition of the shield machine; the end of the piston rod of the thrust cylinder is connected to a push plate for cleaning mud cakes on the cutter disc, and after the piston rod of the thrust cylinder is extended, the push plate at its end acts on the end face of the cutter disc; the push plate comprises a base, and the base is fixed to the end of the piston rod of the thrust cylinder; a panel having a shape and size consistent with that of the cutter disc opening is provided on the base, and a triangular guide block is provided in the middle of the panel; a pressure detector is provided at the rear end of the thrust cylinder, a control line of the pressure detector is connected to an operating table, an oil pipe is connected to the thrust cylinder, and the oil pipe is connected to a valve block.

[0006] The cylinder barrel of the propulsion oil cylinder is fixed on the soil bin partition plate through two front and rear connecting plates with threaded holes and bolts.

[0007] The operating table controls the extension and retraction of the propulsion cylinder. The power and hydraulic oil of the operating table are provided from the outside. The operating table is provided with a hydraulic oil pump, and the hydraulic oil pump is connected to a valve block through an oil pipe.

[0008] The shield machine cutter disc mud cake cleaning device proposed in the utility model has the following beneficial effects compared with the prior art:

[0009] The utility model installs a propulsion oil cylinder on the earth bin partition of the shield machine according to the position requirements, and the control console controls the extension and contraction of the oil cylinder. The push plate installed on the end of the piston rod can easily squeeze the mud cake at the cutter head opening. The position of the cutter head opening is quickly located by the position of the profiling knife; a triangular guide block is installed on the push plate to facilitate the push plate to extend into the cutter head opening to prevent the knife from hitting the knife. The push plate can fix a single or multiple propulsion oil cylinders according to the needs. The design structure is simple and practical, easy to use, safe and reliable, and can be widely promoted and used. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the assembly structure of the utility model;

[0011] Figure 2 It is a three-dimensional schematic diagram of the push plate of the utility model;

[0012] Figure 3 It is a three-dimensional partial sectional view of the utility model.

[0013] 1. Shield machine; 2. Cutterhead; 3. Soil bin partition; 4. Push plate; 5. Guide block; 6. Panel; 7. Base; 8. Thrust cylinder; 9. Bolts; 10. Connecting plate; 11. Pressure detector; 12. Operating table; 13. Valve block; 14. Hydraulic oil pump; 15. Oil pipe; 16. Control line. DETAILED DESCRIPTION

[0014] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0015] See also Figures 1 to 3 , a shield machine cutter disc mud cake cleaning device, the shield machine cutter disc is located in front of the soil bin partition; the cake cleaning device has a propulsion cylinder; the cylinder barrel of the propulsion cylinder is installed on the soil bin partition of the shield machine; the end of the piston rod of the propulsion cylinder is connected to a push plate for cleaning the mud cake on the cutter disc, and after the piston rod of the propulsion cylinder is extended, the push plate at its end acts on the end face of the cutter disc; the push plate has a base, and the base is fixed to the end of the piston rod of the propulsion cylinder; the base has a panel with the same shape and size as the cutter disc opening, and a triangular guide block is arranged in the middle of the panel; a pressure detector is installed at the rear end of the propulsion cylinder, the control line of the pressure detector is connected to the operating table, the propulsion cylinder is connected to an oil pipe, and the oil pipe is connected to the valve block.

[0016] The cylinder barrel of the propulsion oil cylinder is fixed on the soil bin partition plate through two front and rear connecting plates with threaded holes and bolts.

[0017] The operating table controls the extension and retraction of the propulsion cylinder. The power and hydraulic oil of the operating table are provided from the outside. The operating table is provided with a hydraulic oil pump, and the hydraulic oil pump is connected to a valve block through an oil pipe.

[0018] A shield machine cutterhead mud cake cleaning device includes a cutterhead 2. The cutterhead 2 is positioned by a profiling knife. The opening of the cutterhead 2 is aligned with the installation position of a push plate 4. The thrust cylinder 8 is extended and retracted. The push plate 4 fixed to the thrust cylinder 8 pushes the mud cake at the opening of the cutterhead 2 into the excavation surface. The extension and retraction of the thrust cylinder 8 is controlled by an operating table 12. The operating table 12 has a hydraulic system such as a valve block 13 and a hydraulic oil pump 14. The thrust cylinder 8 is installed with a pressure detector 11 to detect the size of the cylinder thrust to ensure safety.

[0019] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A shield machine cutterhead mud cake cleaning device, wherein the cutterhead of the shield machine is located in front of the soil bin partition; it is characterized by: The mud cake cleaning device has a thrust cylinder; the cylinder barrel of the thrust cylinder is installed on the soil bin partition of the shield machine; the end of the piston rod of the thrust cylinder is connected to a push plate for cleaning the mud cake on the cutter disc, and after the piston rod of the thrust cylinder is extended, the push plate at its end acts on the end face of the cutter disc; the push plate has a base, and the base is fixed to the end of the piston rod of the thrust cylinder; the base has a panel with a shape and size consistent with the cutter disc opening, and a triangular guide block is provided in the middle of the panel; the rear end of the thrust cylinder is equipped with a pressure detector, the control line of the pressure detector is connected to the operating table, the thrust cylinder is connected to an oil pipe, and the oil pipe is connected to the valve block.

2. A shield machine cutterhead mud cake cleaning device as claimed in claim 1, characterized in that: The cylinder barrel of the propulsion oil cylinder is fixed on the soil bin partition plate through two front and rear connecting plates with threaded holes and bolts.

3. A shield machine cutterhead mud cake cleaning device as claimed in claim 1, characterized in that: The operating table controls the extension and retraction of the propulsion cylinder. The power and hydraulic oil of the operating table are provided from the outside. The operating table is provided with a hydraulic oil pump, and the hydraulic oil pump is connected to a valve block through an oil pipe.

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