Expansion joint cleaning apparatus and method
阅读：714发布：2021-12-18
专利汇可以提供Expansion joint cleaning apparatus and method专利检索，专利查询，专利分析的服务。并且An apparatus and method for cleaning of expansion joints between adjacent slabs of concrete and, more particularly, for removing joint sealant compositons from the expansion joints for periodic replacement thereof, are disclosed. The apparatus includes a vehicle having a tool carrying arm on which a plow-type cleaning tool is mounted. The cleaning tool has a cutting face formed from a material capable of cutting concrete and is dimensioned to create an overlap or interference fit with the side walls of the joint. The tool is mounted on the arm with the cutting face inclined toward the direction of advancement of the vehicle down the expansion joint during cleaning, and the cutting forces are applied downwardly and forwardly to effect cutting of the concrete while reducing spalling adjacent the joint. A pantograph-type linkage is employed with a tool having tapered side cutting edges to allow the tool to track or follow the expansion joint during plowing.，下面是Expansion joint cleaning apparatus and method专利的具体信息内容。
1. In an apparatus for the cleaning of expansion joints between adjacent slabs of concrete including the removal of fillers and joint sealant compositions positioned in said joints, said apparatus including a vehicle, a tool carrying arm, means mounting said arm to said vehicle for manipulation of said arm and application of a substantial downward force to said arm, the improvement comprising: a. a cleaning tool having a cutting face formed from material capable of cutting concrete, said cutting face being formed for insertion of a lower portion thereof into said joint; and b. tool mounting means mounting said tool on said arm with said cutting face inclined toward the direction of advancement of said vehicle during cleaning in an amount sufficient to apply a forwardly and downwardly oriented cutting force which will effect cutting of the concrete adjacent said joint substantially without spalling the same.
2. An expansion joint cleaning apparatus as defined in claim 1 wherein, said upper and lower portions of said cutting face are defined by spaced apart convergently tapering side cutting edges being spaced at a width at the distal end of said tool for insertion into said joint and spaced at a width mediate the heighth of said face causing an overlap of said cutting edges with opposed side walls defining said joint whereby both side walls of said joint may be simultaneously cut by said tool.
3. An expansion joint cleaning apparatus as defined in claim 1 wherein, said face is formed by tungsten carbide steel and includes substantially right angle cutting edges on opposite sides thereof.
4. An expansion joint cleaning apparatus as defined in claim 1 wherein, said tool mounting means is formed to mount said face at an angle of at least about 15* from a plane normal to the top surfaces of said slabs.
5. An expansion joint cleaning apparatus as defined in claim 1 wherein, said tool mounting means is formed for selective adjustment of the angle at which said face is inclined toward the direction of advancement of said vehicle.
6. An expansion joint cleaning apparatus as defined in claim 1 wherein, said arm and said means mounting said arm to said vehicle are formed as a pantograph linkage to allow said arm to move laterally with respect to said joint as said vehicle advances down said joint while maintaining said tool aligned parallel to the direction of travel of said vehicle.
7. An expansion joint cleaning apparatus as defined in claim 6 wherein, said means for raising and lowering said arm includes an element transverse to said pantograph linkage and said element is formed to apply a downward force to said pantograph linkage while guiding said linkage for transverse movement.
8. An expansion joint cleaning apparatus as defined in claim 7, wherein, said pantograph linkage and raising and lowering means are comprised of: a. a frame pivotally mounted to said vehicle for articulation about a horizontal axis; b. a first pair of vertically spaced parallel elements pivotally mounted adjacent a first end thereof to said frame for articulation about a vertical axis; c. a second pair of vertically spaced parallel elements pivotally mounted adjacent a first end thereof to said frame at a spaced distance from said first pair of elements for articulation about a vertical axis; d. a connecting member pivotally connected to said first and said second pairs of elements adjacent the distal ends thereof at an equal distance from said frame and a distance apart causing said first and second pairs of elements to be substantially parallel; and e. said element transverse to said pantograph linkage is mounted to said frame and extends between said first and second vertically spaced pairs of elements mediately of said frame and said connecting member, said element transverse to said pantograph linkage being dimensioned for sliding lateral movement of said first and second pairs of elements thereover.
9. A method of cleaning fillers, sealants and debris from an expansion joint between adjacent slabs of concrete with a vehicle having means for manipulating a plow-type cleaning tool comprising the steps of: a. selecting a cleaning tool having a cutting face formed of a material capable of cutting concrete and mounting said cleaning tool in said means; b. positioning said cutting face in engagement with and overlapping a portion of at least one of a pair of opposed side walls defining said joint by manipulating said vehicle and said tool, and positioning said cutting face to be inclined toward the direction of advancement of said vehicle during cleaning of said joint sufficiently to substantially prevent spalling of said joint; and c. applying a downward force to said cleaning tool while advancing said vehicle down said joint in inclined orientation to effect a downward and forward cutting force through said cutting face to cut away a portion of the side wall of said joiNt and remove material in said joint.
10. The method of cleaning expansion joints as defined in claim 9 wherein, said cutting face is inclined from a plane normal to said slabs toward the direction of travel of said vehicle during cleaning at least about 15* and not more than about 60*.
11. The method of cleaning expansion joints as defined in claim 10, and positioning said cutting face at a forward inclination of about 15*; advancing said tool down a length of said joint; repositioning said cutting face at a forward inclination of about 60*; and advancing said tool a second time down said length of said joint.
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