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Head for excavator mounted to power shovelRelated Patent Categories: Mining Or In Situ Disintegration Of Hard Material, Hard Material Disintegrating Machines, Percussive-type Cutter, Cutter Shiftable HorizontallyHead for excavator mounted to power shovel description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20060012239, Head for excavator mounted to power shovel. Brief Patent Description - Full Patent Description - Patent Application Claims
[0001] This application is a continuation of pending International Patent Application No. PCT/KR2003/000560 filed on Mar. 22, 2003 which designates the United States. FIELD OF THE INVENTION [0002] The present invention relates to an excavator, and more particularly, to a breaking head mounted to an excavator for removing rocks on or in the ground at construction work. BACKGROUND OF THE INVENTION [0003] Generally, rocks positioned on or in the ground should be removed at the initial stage of foundation for the construction work. The rock removing process is implemented by one method of breaking the rock using a vibrator or another method of drilling a hole in the rock using a rotary cutter. The method using the vibrator causes serious vibration and noise to happen, thereby incurring the enmity of the people. Accordingly, the latter method using the rotary cutter having a little vibration and noise has the preference. [0004] According to the method using the rotary cutter, a breaking head has a drilling means and a vertical moving means, and is mounted to an arm of the excavator to form a hole in the rock and remove the rock. [0005] The construction of the breaking head carrying out the above function is disclosed in Korean Utility Model Publication No. 0260604 entitled "Excavator Head for Mounted to Power Shovel" and issued to the applicant. are attached to both sides of the rotary plate. The respective brackets are connected to a link and arm of the excavator. The rotary plate is provided with an auxiliary cylinder coupled to the frame. Two cylinders are mounted in parallel to a rear portion of a rotary pipe and are moved along a guide rod in the frame to continuously carry the rotary pipe. [0006] Specifically, the breaking head constructed as described above will obtain the following effects. First, the rotary pipe is vertically moved by the cylinder operated vertically to implement the excavation work. In addition, the breaking head according to the present invention is rotated back and forth by the link operation of the excavator, thereby easily working an inclined surface such as a protruded region. Furthermore, since the auxiliary cylinders (rotary cylinder) are mounted to one side of the rotary plate, the breaking head may be rotated from side to side, if necessary, thereby easily working a side of the ground. [0007] The conventional breaking head constructed and having the working effects as described above has following problems. [0008] In the case of rotating the breaking head from side to side using the rotary cylinder to work the side of the ground, since only one rotary cylinder is attached to one side of the rotary plate, overload is applied to the rotary cylinder itself when it operates, thereby not smoothly rotating the breaking head. [0009] In addition, when excavating the inclined surface such as the protruded region of the ground, after the breaking head is rotated at a desired angle back and forth by the link operation of the excavator, the breaking head implements the excavation for the inclined surface, while bearing members installed to a bearing plate (lower plate) of the breaking head are fixed to the ground. At that time, the bearing members are not fixed to the inclined surface of the ground and thus are released from the ground. Therefore, the breaking head is not fixed, and an operator is suffered from the working delay. [0010] Also, the breaking head is generally laid on the ground when keeping it. At that time, various operating levers and components mounted to the breaking head may be damaged due to collision against recesses of the ground. DISCLOSURE OF THE INVENTION [0011] Therefore, an object of the present invention is to solve the problems involved in the prior art, and to provide a breaking head for an excavator, in which a plurality of pivot cylinders for pivoting the breaking head from side to side are installed to rear portions of the breaking head, thereby more smoothly working a side of the ground. [0012] Another object of the present invention is to provide a breaking head for an excavator, in which, inclined bearing members having a desired slant angle are attached between bearing members provided along four lower corners of a lower plate, thereby easily securing the breaking head to the ground when excavating an inclined surface or curved surface of the ground. [0013] Another object of the present invention is to provide a breaking head for an excavator, in which a pipe is provided to a rear portion of a stationary plate engaged to the pivot cylinder, thereby preventing various components from being damaged. [0014] Another object of the present invention is to provide a breaking head for an excavator, in which footboards are provided to a lateral plate of the breaking head, thereby conveniently and safely manipulating various operating levers mounted to the lateral plate. [0015] In order to accomplish the above and other objects, there is provided a breaking head for an excavator including lateral plates positioned between an upper plate and a lower plate, and a rotary plate connected to a rotary shaft installed to an upper end of the upper plate, the rotary plate having brackets to be engaged to a link and an arm of the excavator; the breaking head comprising: a plurality of pivot cylinders at a rear portion of the breaking head for pivoting the breaking head left and right around the rotary shaft; and inclined bearing members attached between a plurality of bearing members installed along four corners of the lower plate. BRIEF DESCRIPTION OF DRAWINGS [0016] The above objects, other features and advantages of the present invention will become more apparent by describing the preferred embodiment thereof with reference to the accompanying drawings, in which: [0017] FIG. 1 is a perspective view illustrating a construction of a breaking head for an excavator according to a preferred embodiment of the present invention. [0018] FIG. 2 is a front view of the breaking head shown in FIG. 1. [0019] FIG. 3 is a cross-sectional view taken along a line A-A of FIG. 2. [0020] FIG. 4 is a bottom view of the breaking head according to the present invention. Continue reading about Head for excavator mounted to power shovel... Full patent description for Head for excavator mounted to power shovel Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Head for excavator mounted to power shovel patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Head for excavator mounted to power shovel or other areas of interest. ### Previous Patent Application: Power take off Next Patent Application: Centering device, kit and method Industry Class: Mining or in situ disintegration of hard material ### FreshPatents.com Support Thank you for viewing the Head for excavator mounted to power shovel patent info. 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