# US 10,766,036 B2 · Multi-drive crusher > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,766,036 B2 - Document ID: US10766036B2 - Status: Granted - Kind: B2 - Application number: 15/536,178 - Filed: 2014-12-16 - Published: 2017-11-23 - Granted: 2020-09-08 - Earliest claimed: 2014-12-16 - Assignees: Sandvik Intellectual Property AB - Applicants: Sandvik Intellectual Property AB - Inventors: Phil Nicholson; Martin Wheatley - Web page: https://patentgrep.com/patent/US10766036B2 ## CPC - B02C 1/02: Jaw crushers or pulverisers - B02C 1/005: {hydraulically or pneumatically operated} - B02C 1/025: {Jaw clearance or overload control} - B02C 21/026: {self-propelled} - F16H 7/02: with belts; with V-belts - 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}) - F16H: GEARING ## Abstract A crusher unit includes a mainframe that supports a crusher suitable for crushing bulk material. The unit has a primary motor carried by the frame to drive a crusher via a first drive belt extending around a first drive pulley and a first flywheel mounted at the crusher. The unit further includes a secondary motor carried by the frame to provide a secondary drive to the crusher via a second drive belt extending around a first or a second flywheel mounted at the crusher and a second drive pulley. ## Claims ### Claim 1 A crusher unit comprising: a mainframe; a crusher supported by the mainframe; a primary motor carried by the mainframe to drive the crusher via a first drive belt extending around a first drive pulley at the primary motor and a first flywheel mounted at the crusher; a secondary motor carried by the mainframe to provide a secondary drive of the crusher; and a second drive belt extending around a second drive pulley at the secondary motor and either the first flywheel or a second flywheel mounted at the crusher, wherein the secondary motor is movably mounted via a pivot arm to adjust a tension of the second drive belt. ### Claim 2 (depends on 1) The crusher unit as claimed in claim 1, wherein the second drive belt extends around the second drive pulley and the second flywheel. ### Claim 3 (depends on 2) The crusher unit as claimed in claim 2, wherein the first flywheel is located at a first side of the crusher and the second flywheel is located at a second and opposite side of the crusher to the first flywheel. ### Claim 4 (depends on 2) The crusher unit as claimed in claim 2, wherein a separation distance between the primary motor and the first flywheel is more than a separation distance between the secondary motor and the second flywheel. ### Claim 5 (depends on 2) The crusher unit as claimed in claim 2, wherein the crusher is a jaw crusher and the first and second flywheels are mounted at respective first and second ends of a main shaft that mounts a movable jaw within the jaw crusher. ### Claim 6 (depends on 1) The crusher unit as claimed in claim 1, wherein the first and second drive belts comprise respectively any one or a combination of the following set of: a V-belt or a plurality of V-belts; a substantially planar belt; a toothed or ribbed belt. ### Claim 7 (depends on 1) The crusher unit as claimed in claim 1, wherein the primary motor has a clutch positioned to disengage rotational drive of the first drive pulley by the primary motor and allow independent rotation of the first drive pulley relative to the primary motor. ### Claim 8 (depends on 1) The crusher unit as claimed in claim 1, further comprising an electric control to switch driving transmission of the crusher between the primary and the secondary motors. ### Claim 9 (depends on 8) The crusher unit as claimed in claim 8, wherein the secondary motor is a hydraulic motor actuated by a pressurized fluid and a fluid pump, the control unit being coupled to control a pressure of the fluid via the fluid pump. ### Claim 10 (depends on 9) The unit as claimed in claim 9, wherein the primary motor is a combustion engine and the fluid pump is mounted at the combustion engine. ### Claim 11 (depends on 1) The crusher unit as claimed in claim 1, further comprising a tension pulley provided at a region of the first drive belt to adjust a tension of the first drive belt. ### Claim 12 (depends on 1) The crusher unit as claimed in claim 1, wherein the primary motor includes an electric motor or a combustion engine. ### Claim 13 (depends on 1) The crusher unit as claimed in claim 1, wherein the secondary motor includes an electric motor or a hydraulic motor. ### Claim 14 (depends on 1) The crusher unit as claimed in claim 1, further comprising tracks arranged to allow the crusher unit to move over the ground.