8 results about "Shield machine" patented technology

The invention discloses a shield machine receiving steel platform which comprises a plurality of steel supporting upright posts, a thick steel plate and a steel bracket; under the condition that a medium plate structure is too late to construct, a steel upright post platform can be utilized for receiving a shield machine; a connecting system cross-welded and fixed by 20a I-shaped steels is adoptedamong the steel upright posts, so that the integrity is ensured to be formed among the steel upright posts, therefore, the stability is higher; the receiving bracket is welded with the 2-cm steel plate by adopting additionally-arranged I20a angle steels as an anti-slip stop block, so that the slippage of the shield machine is prevented, and the shield receiving safety is ensured.

The invention provides a test device for simulating sectional shield excavation. The test device comprises a plurality of unit shield machines which are sequentially connected with one another. Each unit shield machine comprises a driving control unit, two rotary contraction mechanisms and an outer frame, each driving control unit comprises three driving motors, screws of a worm gear are connected to the front end of each driving motor, and wires are connected to the rear end of each driving motor; the three driving motor of each driving control unit respectively equidistantly and fixedly encircle the center of a spindle by the aid of motor fixing components; eight arc-shaped sheets are sequentially connected with one another to form each outer frame, every two adjacent arc-shaped sheets are connected with each other by a fixing sheet, and movable gaps are reserved between every two adjacent arc-shaped sheets; the rotary contraction mechanisms of each unit shield machine are respectively connected to two ends of the corresponding spindle. The test device has the advantages that the rotary contraction amplitudes are controlled by the driving motors and gears, accordingly, rotary contraction is easy to control and is stable, the test device can be contracted and then expanded, and excavation soil loss procedures of shield machines can be completely simulated.

The invention relates to a shield horizontal freezing receiving construction method which is suitable for shield construction in water-rich stratum and high-water-pressure stratum. The shield horizontal freezing receiving construction method includes the following construction steps that the receiving end head is frozen and strengthened by the horizontal freezing method; receiving is prepared; a freezing pipe is pulled out and a pipe hole is sealed and blocked; a hole ring reduction device is installed; tunneling construction is carried out in a freezing area, a water stop hoop is applied; theeffect of the water stop hoop is verified; a shield machine drives a diaphragm wall; and shield receiving is carried out. By adopting the technical scheme, the stability of shield reaching the receiving end, the safety of shield construction process of the receiving end and the smoothness of shield receiving process can be effectively guaranteed.

The invention provides a screw machine closed type hydraulic system for a shield machine and the shield machine. The screw machine closed type hydraulic system comprises a screw machine main pump loop connected with a screw machine pump (1), an oil supplementing oil path connected with an oil supplementing pump (2), a main pump control loop connected with a servo oil cylinder (3), and a control valve group connected with the screw machine main pump loop and the main pump control loop; and the servo oil cylinder (3) controls a swash plate of the screw machine pump (1). The screw machine closed type hydraulic system has the beneficial effects that the system can be protected against damage by releasing pressure to the other path when one path of high pressure of the main loop exists, meanwhile, redundant heat of the system can be brought back to an oil tank through the oil path on the low-pressure side, and pump damage caused by overheating of the system is avoided.

The invention provides a shield tunneling machine and a detection system for sensing deformation of a center area of a cutter head of the shield tunneling machine. The detection system comprises a telescopic assembly which comprises a first telescopic part and a second telescopic part, the second telescopic part comprises an insertion part, and the first telescopic part comprises an insertion hole; an oil storage cavity is formed in the second telescopic part, an oil outlet communicated with the oil storage cavity is formed in the side wall of the second telescopic part, and an oil overflow opening communicated with the insertion hole is formed in the side wall of the first telescopic part; the oil outlet and the oil overflow opening are isolated from each other when the cutter head of the shield tunneling machine works normally, and the pressure of hydraulic oil in the oil storage cavity is kept unchanged; when the center area of the cutter head of the shield tunneling machine is depressed and deformed, the second telescopic part and the first telescopic part move in opposite directions, the oil outlet communicates with the oil overflow opening, and hydraulic oil is discharged to cause pressure reduction. The detection system further comprises a pressure sensor for detecting the pressure of hydraulic oil. The detection system can sense whether the center area of the cutter head of the shield tunneling machine is deformed or not, operators can find the deformation in time conveniently, measures can be taken in time, and shield equipment is prevented from being damaged.

The invention provides an anti-collision device for a shield machine trolley. The anti-collision device comprises an anti-collision beam and a steel spring plate; the anti-collision beam is horizontally arranged in front of the trolley, the left side wall and the right side wall of the upper end of the anti-collision beam are correspondingly and fixedly connected with a left boundary beam and a right boundary beam of the trolley through fixed arms; the steel spring plate is arranged on the surface of the anti-collision beam in the face of a feeding movement direction of an electric flat car; areflective laser sensor is arranged in the middle part of the anti-collision beam; the reflective laser sensor irradiates to the feeding movement direction of the electric flat car, and the reflective laser sensor is connected with a distance warner. The anti-collision device for the shield machine trolley disclosed by the invention can give out an early warning when the electric flat car entersthe collision dangerous range, thereby prompting a worker to operate a brake device; and meanwhile, the collision strength is effectively reduced, the deformation on the equipment caused by the collision is reduced, the equipment normal work is realized, and the maintenance quantity is reduced.

The invention provides a flushing device for preventing mud cakes of a large-diameter slurry balance shield, and belongs to the technical field of shield machine accessories. The spray head comprises a cutter head, a spray head outer shell is arranged on the cutter head in the axial direction in a penetrating mode, the spray head outer shell is annular and rotationally connected with the cutter head, and a washing mechanism used for washing cutters on the cutter head and the outer surface of the cutter head is arranged in the spray head outer shell. The washing mechanism arranged on the spray head outer shell can wash the cutterhead and cutters on the cutterhead in a multi-angle mode, so that mud cakes on the cutterhead can be rapidly and efficiently washed away, when the cutterhead works, the washing mechanism can be contained in the spray head outer shell, the washing mechanism cannot be blocked or damaged by soil when the cutterhead works, and the service life of the cutterhead is prolonged. The service life of the flushing mechanism is prolonged.