A jackhammer system for reducing the vibration and noise experienced by an operator of the jackhammer. The jackhammer system includes a housing, a chisel movably positioned within a lower neck of the housing, a pair of flywheels rotatably attached to a pair of support brackets, a ram slidably positi
A jackhammer system for reducing the vibration and noise experienced by an operator of the jackhammer. The jackhammer system includes a housing, a chisel movably positioned within a lower neck of the housing, a pair of flywheels rotatably attached to a pair of support brackets, a ram slidably positioned within a guide channel and engageable by the flywheels to engage the chisel, a plurality of elastic members attached to the ram, and an actuator mechanically connected to the support brackets for controlling a position of the flywheels. An upper sensor and a lower sensor determine the position of the ram within the guide channel. An engaging plate supported by a plurality of compression springs receives the downwardly impact of the ram when driving the chisel downwardly. A recoil absorber having a recoil spring is attached to an upper portion of the housing for absorbing the recoil of the ram.
대표청구항▼
I claim: 1. A jackhammer system, comprising: a housing; a chisel movably positioned within a lower neck of said housing; a pair of support brackets pivotally attached to said housing; a pair of flywheels rotatably attached to said support brackets; at least one motor mechanically connected to said
I claim: 1. A jackhammer system, comprising: a housing; a chisel movably positioned within a lower neck of said housing; a pair of support brackets pivotally attached to said housing; a pair of flywheels rotatably attached to said support brackets; at least one motor mechanically connected to said flywheels for rotating said flywheels, wherein said flywheels each have an opposite rotation from one another; a ram slidably positioned within a guide channel of a guide member, wherein said ram is positionable between and engageable by said flywheels to engage said chisel; a plurality of elastic members attached to said ram; at least one actuator connected to said support brackets for selectively positioning a perimeter edge of said flywheels in engagement with an outer surface of said ram; at least one sensor within said housing for determining a position of said ram; a control unit in communication with said at least one actuator, said at least one sensor and said motors; an engaging plate movably supported by a plurality of compression springs within a lower portion of said housing that receives the downwardly impact of said ram when driving said chisel downwardly and when said ram extends into a lower position, wherein said engaging plate has a central aperture for allowing said chisel to freely pass through and wherein said central aperture has a size smaller than a main shaft portion of said ram; and a plurality of guide posts for slidably supporting said engaging plate. 2. The jackhammer system of claim 1, wherein said at least one sensor is comprised of an upper sensor and a lower sensor to determine a position of said ram within said guide channel. 3. The jackhammer system of claim 1, including a recoil absorber having a recoil spring movably attached to an upper portion of said housing for absorbing a recoil of said ram when said ram returns to an upper position. 4. The jackhammer system of claim 1, wherein said engaging plate is movable along an axis concentric with said ram. 5. The jackhammer system of claim 1, wherein said flywheels each have an outer perimeter that engages said ram. 6. The jackhammer system of claim 1, wherein said flywheels are positioned on opposite sides of said ram. 7. The jackhammer system of claim 1, wherein said control unit is electrically connectable to a power source. 8. The jackhammer system of claim 7, wherein said power source is a battery. 9. The jackhammer system of claim 1, including a pair of linkage members connected between said actuator and said support brackets. 10. The jackhammer system of claim 9, wherein said linkage members are connected to a connector member movably extendible from said actuator. 11. The jackhammer system of claim 1, wherein said actuator closes said flywheels upon said ram when said ram is in said upper position and wherein said actuator opens said flywheels when said ram is in said lower position. 12. The jackhammer system of claim 1, wherein a pivot point for each of said support brackets is in an outer side portion of said housing and wherein said actuator is connected to an inner portion of said support brackets. 13. A jackhammer system, comprising: a housing; a chisel movably positioned within a lower neck of said housing; a ram slidably positioned within a guide channel of a guide member; a pair of support brackets pivotally attached to said housing; a pair of flywheels rotatably attached to said support brackets and positioned on opposite sides of said ram for engaging said ram in a frictional manner, wherein said flywheels each have an outer perimeter that engages said ram; at least one motor mechanically connected to said flywheels for rotating said flywheels, wherein said flywheels each have an opposite rotation from one another; a plurality of elastic members attached to said ram; at least one actuator connected to said support brackets for selectively positioning a perimeter edge of said flywheels in engagement with an outer surface of said ram, wherein said actuator closes said flywheels upon said ram when said ram is in said upper position and wherein said actuator opens said flywheels when said ram is in said lower position; an upper sensor and a lower sensor within said housing for determining a position of said ram; a control unit in communication with said at least one actuator, said at least one sensor and said motors; an engaging plate movably supported by a plurality of compression springs within a lower portion of said housing that receives the downwardly impact of said ram when driving said chisel downwardly and when said ram extends into a lower position, wherein said engaging plate has a central aperture for allowing said chisel to freely pass through and wherein said central aperture has a size smaller than a main shaft portion of said ram, a plurality of guide posts for slidably supporting said engaging plate, wherein said engaging plate is movable along an axis concentric with said ram; and a recoil absorber having a recoil spring movably attached to an upper portion of said housing for absorbing a recoil of said ram when said ram returns to an upper position. 14. The jackhammer system of claim 13, wherein said control unit is electrically connectable to a power source. 15. The jackhammer system of claim 14, wherein said power source is a battery. 16. The jackhammer system of claim 13, including a pair of linkage members connected between said actuator and said support brackets. 17. The jackhammer system of claim 16, wherein said linkage members are connected to a connector member movably extendible from said actuator. 18. The jackhammer system of claim 13, wherein a pivot point for each of said support brackets is in an outer side portion of said housing and wherein said actuator is connected to an inner portion of said support brackets.
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이 특허에 인용된 특허 (9)
Poulsen ; Peder Ulrik, Apparatus for generating an impact force.
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