# US 2013/0153697 A1 · Bucket-type jaw crusher > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0153697 A1 - Document ID: US20130153697A1 - Status: Published application - Kind: A1 - Application number: 13/698,493 - Filed: 2011-05-17 - Published: 2013-06-20 - Earliest claimed: 2010-05-18 - Assignees: Kabushiki Kaisha Ito Shokai - Inventors: Katsuhiro Ito; Makoto Ishioka - Web page: https://patentgrep.com/patent/US20130153697A1 ## CPC - B02C 1/02: Jaw crushers or pulverisers - B02C 1/005: {hydraulically or pneumatically operated} - B02C 1/025: {Jaw clearance or overload control} - B02C 1/04: with single-acting jaws - B02C 25/00: Control arrangements specially adapted for crushing or disintegrating - E02F 3/407: with ejecting {or other unloading} device - E02F 3/965: {of metal-cutting or concrete-crushing implements (shearing devices B23D17/00; wrecking of buildings, e.g. tools therefor, E04G23/08)} - E02F 7/06: Delivery chutes or screening plants {or mixing plants} mounted on dredgers or excavators ({for back-filling E02F5/226 takes precedence}; separating equipment in general B03; delivery chutes in general B65G) - E02F 9/2221: {Control of flow rate; Load sensing arrangements (E02F9/2203 take precedence over E02F9/2221)} - B02C: CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN ({household tools and machines for pulverising foodstuffs, e.g. coffee and spice mills A47J42/00; pharmaceutical mortars A61J3/02; mechanical processing of refuse and garbage B03B9/06; dressing mould materials by grinding B22C5/04}; obtaining metallic powder by crushing, grinding or milling B22F9/04; {recovery of plastics by disintegrating B29B17/00; crushing raw materials in starch making C08B30/02; beaters for papermaking D21D1/02; crushing devices specially for transport in mines E21F13/002; slag crushing devices F23J1/00; fuel milling devices in combustion apparatus F23K1/00; household devices for crushing coal F24B15/02; ice disintegrating devices F25C5/02}) - E02F: DREDGING; SOIL-SHIFTING (winning peat E21C49/00) ## Abstract The present invention relates to improvement to a bucket-type jaw crusher used for treatment of slag and other waste. In a bucket-type jaw crusher provided with a bucket (1) attached to an arm of a construction machine, a fixed jaw (5) fixed in the bucket, and a moving jaw (6) opposed to the fixed jaw (5) and pivotally supported on the top by an eccentric shaft (7) and supported on the bottom by a toggle mechanism and crushing slag and other materials to be crushed by reciprocating swing of the moving jaw (6), a motor (9) for rotating the eccentric shaft (7) forward and reverse is provided in the bucket and crushing control means is provided which automatically rotates the eccentric shaft (7) in reverse by the motor (9) and then, rotates the shaft forward when crushing the material to be crushed. ## Claims ### Claim 1 A bucket-type jaw crusher provided with a bucket attached to an arm of a construction machine, a fixed jaw fixed in the bucket, and a moving jaw opposed to the fixed jaw and pivotally supported on the top by an eccentric shaft and supported on the bottom by a toggle mechanism, the fixed jaw and the moving jaw being arranged such that a space on a scooping side of the bucket is opened wide as an inlet and is gradually narrowed toward the depth and continues to an outlet of the bucket, for crushing slag and other materials to be crushed by swing of the moving jaw, characterized in that a motor for rotating the eccentric shaft forward and reverse is provided in the bucket; and crushing control means is provided which automatically rotates the eccentric shaft in reverse by the motor and then, rotates the shaft forward when crushing the material to be crushed. ### Claim 2 A bucket-type jaw crusher characterized in that a hydraulic circuit provided with a hydraulic motor connected to a hydraulic circuit of a construction machine and rotating an eccentric shaft forward and reverse is provided in the bucket; and the hydraulic circuit has crushing control means for automatically reversing the eccentric shaft by the hydraulic motor and then, rotating the shaft forward in crushing of a material to be crushed. ### Claim 3 (depends on 1) The bucket-type jaw crusher according to claim 1, wherein the toggle mechanism is composed of a toggle plate having both ends, each formed having an arc section, a fixed-side toggle seat having a contact surface provided on a bucket frame and in point contact on an arc-shaped section with the one end portion set with a larger diameter curvature than one end portion of the toggle plate, and a movable-side toggle seat having a contact surface provided on a moving jaw and in point contact on an arc-shaped section with the other end portion and set with a larger diameter curvature than the other end portion of the toggle plate. ### Claim 4 (depends on 2) The bucket-type jaw crusher according to claim 2, further comprising: a fixed-side cover for dust-proof covering a contact surface between one end portion of the toggle plate and the fixed-side toggle seat and a movable-side cover for dust-proof covering the contact surface between the other end portion of the toggle plate and the movable-side toggle seat. ### Claim 5 (depends on 1, 2, 3) The bucket-type jaw crusher according to any one of claim 1, 2 or 3, wherein the moving jaw has a structure in which a jaw plate is attached onto a base frame; a jaw-plate fixing caw portion for hooking the jaw plate by the base frame is formed separately from the moving jaw, and the jaw-plate fixing claw portion has a hook portion and a base portion integrally formed with the hook portion; and at a distal end of the moving jaw which becomes the discharge outlet side, in a state where the hook portion is hooked by the distal end of the jaw plate, the base portion is detachably secured to the base frame by a securing tool such as a bolt and the like. ### Claim 6 (depends on 1, 2, 3) The bucket-type jaw crusher according to any one of claim 1, 2 or 3, wherein a liner plate made of a substantially triangular abrasion-resistant steel plate corresponding to an opening posture of the fixed jaw and the moving jaw is arranged inside right and left side plates of a crusher portion, and a stud bolt protruding outward is fastened to the liner plate detachably fixed by a nut from the outside of the side plate. ### Claim 7 (depends on 1, 2, 3) The bucket-type jaw crusher according to any one of claim 1, 2 or 3, wherein a bottom surface of a scooping portion of the bucket is set as an inclined surface gradually lowering and inclined from a distal end; and a bottom surface of a crusher portion is a raised bottom surface extending substantially horizontally through a front leg portion bent upward from a lower end of the inclined surface and has a rear leg portion bent downward from the raised bottom surface in the vicinity of the outlet of the bucket in the rear of the raised bottom surface and arranged at a substantially same height position as the front leg portion.