CN2633439Y

CN2633439Y - Variable eccentric actuator of heavy pile-drawer

Info

Publication number: CN2633439Y
Application number: CN 03260417
Authority: CN
Inventors: 车仁炜
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-08-19
Filing date: 2003-08-19
Publication date: 2004-08-18
Anticipated expiration: 2013-08-19

Abstract

The utility model discloses to a variable eccentric actuator of heavy pile-drawer, which relates to the structure improvement of the prior actuator of heavy pile-drawer. The utility model comprises an isolating plate (1) moving up and down, an eccentric wheel (2), a sliding block (3), a bearing (4) and an isolating plate frame (5); wherein, the isolating plate (1) moving up and down is arranged inside the isolating plate frame (5), the bearing (4) is fixed on the central position of the isolating plate (1) moving up and down, the eccentric wheel (2) is fixed at one side inside the bearing (4), and the sliding block (3) is arranged inside the eccentric wheel (2). The utility model has a reasonable structure, a small number of parts, easy and simple installation and commissioning process as well as a compact structure. A vibrating pile hammer is started up under the status of zero eccentric distance, so the utility model improves the prior defect where a big capacity power must be needed for an eccentric torque startup, and effectively reduces the impact of the startup current on electricity network, and removes the shortcoming where the prior actuator motor is damageable. In heavy pile drawing process, the actuating force is changed with the changed eccentric distance, so that the variations of soil layer and the soil quality can be adaptable by way of changing an amplitude, the optimal speed and effect of heavy pile drawing can be realized.

Description

The change eccentric activator of extracting-driving pile machine

Technical field: the utility model relates to the improvement of extracting-driving pile machine exciter structure.

Background technology: the vibrator of existing extracting-driving pile machine mostly adopts the eccentric block formula, and several groups of fixing eccentric block and several groups of adjustable eccentric blocks promptly are housed on axle, utilizes the principle that its horizontal component is cancelled each other, vertical stress component superposes mutually to come work.Such exciter structure complexity, number of spare parts are many, and installation is adjusted very loaded down with trivial details, and structure is very not compact yet.

The utility model content: the purpose of this utility model be the development a kind of extracting-driving pile machine the change eccentric activator, it have rational in infrastructure, number of spare parts is few, Installation and Debugging are convenient and simple, the characteristics of compact conformation.The utility model is made up of dividing plate 1 moving up and down, eccentric wheel 2, slide block 3, bearing 4, dividing plate frame 5; Dividing plate 1 moving up and down is located in the dividing plate frame 5, and bearing 4 is fixed on the center of dividing plate 1 moving up and down, and eccentric wheel 2 is fixed on the side in the bearing 4, and slide block 3 is located in the eccentric wheel 2.The utlity model has rational in infrastructure, number of spare parts is few, Installation and Debugging are convenient and simple, the advantage of compact conformation.The utility model also has the following advantages: one, vibrohammer is to start under 0 the state in eccentric throw, improved former eccentric moment and started necessary shortcoming with big capacity power source, reduced the impact of starting current effectively, overcome the drawback of existing vibrator motor rapid wear electrical network.Two, owing under moment without acceptance of persons, start or shut down, avoid the covibration of pile frame or crane, both reduced the pollution of vibration, noise, guaranteed the safety of construction equipment again.Three, in the process of heavy pile pulling, the change by eccentric throw has changed exciting force, thereby by changing the variation that amplitude adapts to soil layer and soil property, reaches best heavy pile pulling speed and effect.

Description of drawings: Fig. 1 is the overall structure schematic diagram of the utility model (dividing plate is in a position), Fig. 2 is the schematic diagram that the utility model dividing plate is in the b position, Fig. 3 is the schematic diagram that the utility model dividing plate is in the c position, Fig. 4 is a pile sinking operating mode operation principle isoboles, and Fig. 5 is a pile pulling operating mode operation principle isoboles.

The specific embodiment: present embodiment is made up of dividing plate 1 moving up and down, eccentric wheel 2, slide block 3, bearing 4, dividing plate frame 5; Dividing plate 1 moving up and down is located in the dividing plate frame 5, and bearing 4 is fixed on the center of dividing plate 1 moving up and down, and eccentric wheel 2 is fixed on the side in the bearing 4, and slide block 3 is located in the eccentric wheel 2.

Operation principle: under the control of controlling organization, dividing plate can move up and down (referring to Fig. 1), rests on a, b, three positions of c respectively.Push away dividing plate under (referring to Fig. 2), at position b, the eccentric throw of motor center and bearing centre is e, and eccentric wheel is from overlapping position O with the motor shaft center O ₁Begin rotation, along with eccentric rotation, O and O ₁Distance change, promptly this is the rotation of a kind of change eccentric throw, works as O ₁When forwarding under the O, eccentric throw OO ₁Reach maximum, this position is used for the pile sinking operating mode.Push away dividing plate on (referring to Fig. 3), at position c, the eccentric throw of motor center and bearing centre is-e that eccentric wheel is the position O from overlapping with the motor shaft center O still ₁Begin rotation, work as O ₁Forward to O directly over the time, eccentric throw OO ₁Reach maximum, this position is used for the pile pulling operating mode.(referring to Fig. 4, Fig. 5) adds driving power one regularly in the pile sinking operating mode, and the big more pile sinking effect of the exciting force that obtains is good more, and the stake machine can be Fig. 4 with Fig. 2 equivalence when position b works.If OO ₁Maximum be r, the angular speed of motor rotation is ω, slide block and eccentric speed of related movement are v, eccentric mass is m, then maximum exciting force is: F ₀=mr ω ²+ 2mv * ω; Eccentric moment is: M=mgr.Promptly can obtain maximum exciting force in this operating mode.As a same reason, in the pile pulling operating mode, wish that the used power of pile pulling is the smaller the better, the stake machine can be Fig. 5 with Fig. 3 equivalence when position c works, at this moment, and F ₀'=mr ω ²-2mv * ω, the pulling power of crane reduces, and eccentric moment is M=mgr, and motor is whenever goed around, and can pull out one section stake, promptly can make pile pulling the most laborsaving in this position.

Claims

1, the change eccentric activator of extracting-driving pile machine, it is made up of dividing plate moving up and down (1), eccentric wheel (2), slide block (3), bearing (4), dividing plate frame (5); It is characterized in that dividing plate moving up and down (1) is located in the dividing plate frame (5), bearing (4) is fixed on the center of dividing plate moving up and down (1), and eccentric wheel (2) is fixed on the interior side of bearing (4), and slide block (3) is located in the eccentric wheel (2).