A sand pile machine for deep soft foundation construction

Abstract

The invention discloses a sand pile machine for deep soft foundation construction, which comprises a platform, a mast, an immersed tube, an immersed tube hoisting system, a vibratory hammer positioned at the top end of the immersed tube and a hopper capable of filling the immersed tube with sand, wherein the immersed tube hoisting system comprises a main hoister and an auxiliary hoister which are arranged on a platform, the main hoister goes around the upper end of the mast through a first steel wire rope and is connected with the vibratory hammer, and the auxiliary hoister goes around the lower end of the mast through the first steel wire rope and is connected with the vibratory hammer. The sand pile machine further comprises a depth recording system, the depth recording system comprises a depth sensor arranged on the mast and a transmission cable for driving the depth sensor, and the two ends of the transmission cable are connected with the vibratory hammer through an elastic member after respectively going through the upper end and the lower end of the mast. The sand pile machine has the benefits that according to the design, the depth sensor is small in vibration, accurate in data recording and low in spare part and accessory loss through the independent depth recording system, and the problem that the depth sensor is seriously damaged and cannot collect data, which is caused by the fact that a pulley is slow in rotation and reaction or does not rotate, is solved.

Description

technical field [0001] The invention is used in the field of construction equipment, and in particular relates to a sand pile machine used for deep soft foundation construction. Background technique [0002] In road construction, for road construction along the line with flat terrain, dense rivers and ponds, high groundwater level, clay grains, sand, gray gravel and clay with plant residues, and poor geological conditions, it is necessary to use A large number of drainage sand wells and compacted sand piles are used for soft foundation treatment. Among them, the construction of compacted sand piles is mainly completed by sand pile machines. Existing sand pile machines generally include a platform, a mast, an immersed tube, an immersed tube hoisting system, a vibratory hammer, and a hopper capable of filling sand into the immersed tube. During construction, first sink the immersed tube into the target sand pile position through the vibrating hammer and the immersed tube win...

AI Technical Summary

Problems solved by technology

However, because the coarse sand is affected by the air pressure in the immersed tube, the sand surface is loose and unstable, and the measuring hammer cannot accurately measure the actual amount of sand added.

At the same time, the measuring hammer needs to be manually lifted to the top of the immersed tube during each sand filling process, and then the measuring hammer is lowered to the sand surface after filling the sand, which wastes valuable construction time, and the measuring hammer will be buried if the workers are not careful Accidents such as the wire rope being broken, wasting a lot of wire rope and measuring hammer, and it takes 40 to 60 minutes to replace the new sand surface measuring system; at the same time, the sensor signal control range used by the motor of the pulling measuring hammer is too large, making the motor The control response is slow, often resulting in delays in control time, unable to respond to the real situation in a timely and accurate manner, which has a great impact on normal construction

[0004] In addition, when the existing sand pile machine depth recording system records the pile depth during the actual construction process, the depth encoder is directly driven by the steel wire rope of the immersed tube hoisting system. The service life is greatly affected. At the same time, during the construction process, the pulleys are prone to slipping, which makes it impossible to accurately record the depth.

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