Pile Pulling Mechanism
A technology of locking piles and pile heads, which is applied in the direction of sheet pile walls, foundation structure engineering, construction, etc., can solve the problems of reduced friction, large vibration of steam hammer, and small pile pulling force, so as to achieve good guidance and pile head The effect of firm hugging and reliable structure
Active Publication Date: 2017-03-08
CHONGQING HONGGONG INSTRUCTIONAL MACHINE
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Problems solved by technology
When the vibratory pile extractor is working, install the vibratory pile extractor on the pile head, hang it under the hook through the spring vibration absorber and rigging, start the pile extractor, and the vibration generated by the vibrator will cause the pile and the soil to resonate. If the body structure is damaged, the friction between the pile body and the soil decreases, and the rigging is tightened at the same time, and the pile is gradually pulled out. Construction in soft soil layer, not suitable for the operation of highway protection fence
Use the double-action air hammer to pull out the pile. The hammer body is turned upside down, fixed on the pile head, and hung under the rigging. First, the pile head in the soil is shaken to reduce the tightness between the pile and the soil, and then the air hammer is turned on to hammer upwards. Vibration, tighten the rigging, and gradually pull out the piles, which can be used for pile pulling operations on highway guardrails, but the vibration of the hammer is relatively large, which will cause great damage to the road surface
[0003] The performance of the pile-extractor is mainly related to the pile-extractor mechanism. The utility model patent (notification number: CN204125945U) invented by the applicant discloses a vehicle-mounted pile-extractor, which discloses a pile-extractor mechanism, but the The pile pulling mechanism has the disadvantages of limited circumferential holding force on the pile head and poor guidance during the pile pulling process
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[0019] The present invention will be described in detail below in conjunction with accompanying drawing, as Figure 1-8 Shown: the pile pulling mechanism of the present invention adopts full hydraulic drive, including a bottom plate 1 and two pile pulling oil cylinders 2 arranged on the bottom plate, the output direction of the piston of the pile pulling oil cylinder faces the ground, and there is a With a certain gap, the cylinder bodies of the two pile pulling cylinders are connected through the bottom plate. When the rodless chamber of the pile pulling cylinder enters the hydraulic oil, the piston rod outputs downward until the end of the piston rod reaches the ground. At this time, the rodless chamber continues to enter Oil, the piston rod will not continue to output downward under the action of ground resistance, and the hydraulic oil in the rodless chamber will act on the cylinder body and the bottom plate of the pile pulling cylinder in the opposite direction, so that th...
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The invention discloses a pile extracting mechanism which comprises a base plate and two pile extracting oil cylinders arranged on the base plate. A center sleeve coaxially arranged on a pile head in a sleeving manner is arranged on the base plate. The center sleeve is coaxially sleeved with a movable sleeve. A plurality of locking blocks for locking the pile head in the peripheral direction are clamped and evenly distributed on the circumferential face of the center sleeve in the peripheral direction. A pressing plate is arranged on the top of the center sleeve. A conical hole is formed inside the movable sleeve. A conical face matched with the conical hole is arranged on the outer circumferential face of the locking blocks. The upper and lower sides of the locking blocks are each provided with a reset spring. One end of the reset spring on the upper side stretches into the pressing plate, and the other end of the reset spring on the upper side stretches into the locking blocks. One end of the reset spring on the lower side stretches into the wall of the center sleeve, and the other end of the reset spring on the lower side stretches into the locking blocks. The pile extracting mechanism further comprises a pile locking mechanism for driving the movable sleeve to move up and down. The pile extracting mechanism has the beneficial effects of being reliable in structure, firmly and tightly holding the pile head and being good in guidance in the pile extracting process.
Description
technical field [0001] The invention relates to the field of road construction machinery and equipment, in particular to a pile pulling mechanism. Background technique [0002] Pile extractor is a pile machine that uses vibration, static force or hammering to pull piles out of the ground. Commonly used pile extractors are mostly vibratory sinker and steam hammer pile extractors. When the vibratory pile extractor is working, install the vibratory pile extractor on the pile head, hang it under the hook through the spring vibration absorber and rigging, start the pile extractor, and the vibration generated by the vibrator will cause the pile and the soil to resonate. If the body structure is damaged, the friction between the pile body and the soil decreases, and the rigging is tightened at the same time, and the pile is gradually pulled out. Construction in soft ground, not suitable for the operation of highway protection fence. Use the double-action air hammer to pull out t...
Claims
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IPC IPC(8): E02D9/02
Inventor 陈传洪李群峰钟宣阳
Owner CHONGQING HONGGONG INSTRUCTIONAL MACHINE