US2294098A - Renewable shell for crusher rolls - Google Patents

Renewable shell for crusher rolls Download PDF

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Publication number
US2294098A
US2294098A US39286841A US2294098A US 2294098 A US2294098 A US 2294098A US 39286841 A US39286841 A US 39286841A US 2294098 A US2294098 A US 2294098A
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Grant
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Prior art keywords
sections
shell
hub
roll
grooves
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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Inventor
Elmer C Stromer
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Elmer C Stromer
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00Crushing or disintegrating by roller mills
    • B02C4/28Details
    • B02C4/30Shape or construction of rollers
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49544Roller making
    • Y10T29/49547Assembling preformed components
    • Y10T29/49549Work contacting surface element assembled to core
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00Joints and connections
    • Y10T403/70Interfitted members
    • Y10T403/7062Clamped members

Description

Aug. 25, 1942.

E. C.-STROM! ER RENEWABLE SHELL FOR CRUSHER ROLLS Filed May 10,, 1941 gwua/wkw. EZwzer 6 'Ahwmex tluv Patented Aug. 25, 1942 '5 UNITED STATES PATENT QFFICE RENEWABLE SHELL FOR CRUSHER ROLLS Elmer C. Stromer, Aurora, Colo.

Application May 10, 1941, Serial No. 392,868

1 Claim.

This invention relates to a rock crusher roll. The cylindrical surfaces of rock crusher rolls which contact the rock quickly wear away, and become indented and grooved so they can no longer produce a uniform product. As a result the crusher must be dismantled and the rolls discarded and replaced.

The principal object of this invention is to pro- Vide a crusher roll with a renewable grinding surface so that it will not be necessary to discard and renew the entire roll when the grinding surface becomes worn.

Another object of the invention is to provide a renewable shell for grinding rolls which can be quickly and easily placed into position on the roll without it being necessary to dismantle the crusher; which will be held from shifting or moving when in use; and which will automatically tighten itself upon the roll during use.

Other objects and advantages reside in the detail construction of the invention, which is designed for simplicity, economy, and efliciency. These will become more apparent from the following description.

In the following detailed description of the invention reference is had to the accompanying drawing which forms a part hereof. Like numerals refer to like parts in all views of the drawing and throughout the description.

In the drawing:

Fig. 1 is a side elevation of the improved crusher roll;

Fig. 2 is an end view thereof with the retaining ring removed;

Fig. 3 is an end view of the removable shell as it would appear with the roll;

Fig. 4 is a longitudinal section through the improved roll;

Fig. 5 illustrates a section of the split retaining ring employed for holding the renewable shell in place; and

Fig. 6 is an enlarged, fragmentary detail sec-' tion through the retaining ring and the adjacent roll parts.

The invention comprises a roll hub ID from which roll shafts H oppositely project. The roll hub I0 is provided at one extremity with a dovetailed flange l2 projecting above the cylindrical surface thereof. An annular, V-shaped groove I3 is cut in the other end of the hub adjacent the periphery thereof. A plurality of spacedapart, longitudinally extending, half round grooves I4 are formed in the cylindrical surface of the hub Ill. These grooves align with bolt holes through the flange I2.

The renewable shell is formed in two similar half sections !5 and It, each section defining half of a cylinder. The inner surfaces of the two sections are set back from the extremities there- 'offto form shoulders and these shoulders are under-cut to form annular dovetailed grooves l1 which are inset from the extremities of the sections. The inner surfaces of the sections contain longitudinally extending grooves l8 corresponding in size, position and spacing to the grooves I4 in the hub l0.

In assembling the improved roll, the two half sections of the shell l5 and I6 are placed around the hub l0 and then are forced toward the flange I2 so that the dovetail of the flange will engage the dovetail groove ll of the shell. The sections are placed on the roll so that the grooves l8 align with the grooves l4 so as to define longitudinally extending bolt passages.

The sections are held in place on the hub by means of a split retaining ring which is formed of two arcuate, semi-circular ring sections I9, as shown in Fig. 5. The ring sections are provided with bolt openings 20 spaced similarly to the grooves 14 and I8. The inner surfaces of the ring sections are medially grooved to form two arcuate projecting edges 2|. The two ring sections are placed against the adjoining hub and shell sections with the two arcuate edges 2| engaging in the V-shaped groove l3 in the hub and the groove IT in the shell sections, as shown in Fig. 6.

Bolts 22 are then inserted through the flange I2, through the coacting grooves I4 and I8, and through the bolt openings 2!] in the ring sections l9. Nuts 23 are tightened on the bolts to firmly clamp the ring section into the coacting grooves and to firmly clamp the shell sections against the flange l2. The inclined surfaces of the dovetailed grooves act to draw the shell sections toward the hub Ill as the bolts are tightened.

It is desired to call attention to the fact that it is not necessary to remove the improved rolls from the crusher mechanism in order to renew the grinding surfaces thereof. The half sections of the shell can be placed on the hub while the roll shafts II are in position in their bearing boxes. The ring sections I9 can be positioned around the shaft ll while the latter is still in place. The position of the two ring sections on the roll is not important since they will accomplish their clamping and locking function in any position. It has been found best to have the bolts 22 in place in their grooves I4 when the shell sections are put in place to accurately locate the latter.

It will be noted that the extremities of the sections [5 and 16 project over the heads of the bolts 22 and over the nuts 23 to prevent damage thereto. It will also be noted that the bolts serve as keys to prevent rotation of the shell sections on the hub since they project equally into both members.

It has been found in actual use that the shell sections remain permanently tight. It has also been found that if the two shell sections are not in tight contact, partially powdered rock will crowd between the adjacent ends of the sections and serve to wedge the two sections tightly against the outer surfaces of the locking grooves to maintain the shell sections absolutely tight from vibrations.

While a specific form of the improvement has been described and illustrated herein, it is desired to be understood that the same may be varied, within the scope of the appended claim, without departing from the spirit of the invention.

Having thus described the invention, what is claimed and desired secured by Letters Patent is:

A crusher roll comprising: a cylindrical hub; an annular flange projecting outwardly from the cylindrical surface of said hub at one extremity of the latter; a first dove-tailed groove formed in the inner face of said flange entirely around said hub; two semi-cylindrical shell sections surrounding and lying against said hub; a second arcuate dove-tailed groove formed in one extremity of both shell sections and interlocking with the first dove-tailed groove in said flange; a third arcuate dove-tailed groove formed in the opposite extremities of both shell sections; a fourth arcuate, dove-tailed groove formed in the other extremity of said hub, said third and fourth grooves being immediately adjacent the joint between the hub and the sections so that the adjacent sides of the grooves form a concentric annular ridge at the joining line of said joint; a pair of similar semi-circular retaining members, each having an arcuate groove, the arcuate grooves in the retaining members receiving the annular ridge at the joining line; and a concentric series of clamp b01ts extending through said flange, between the shell sections and the hub and through the retaining members to clamp the latter in place, the joining line between the shell sections and the hub forming the bolt circle for said bolts so that the latter project equally into the hub and into the shell sections to prevent the latter from rotating on the former.

ELMER C. STROMER.

US2294098A 1941-05-10 1941-05-10 Renewable shell for crusher rolls Expired - Lifetime US2294098A (en)

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US2294098A US2294098A (en) 1941-05-10 1941-05-10 Renewable shell for crusher rolls

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US2294098A US2294098A (en) 1941-05-10 1941-05-10 Renewable shell for crusher rolls

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Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2751207A (en) * 1953-08-17 1956-06-19 Joy Mfg Co Drum type disintegrating head for continuous miner
US2798676A (en) * 1954-08-04 1957-07-09 Poor & Co Split shell for roll crusher
US2801838A (en) * 1954-10-21 1957-08-06 Joy Mfg Co Rotary disintegrating drum for continuous miner
US3077634A (en) * 1959-01-28 1963-02-19 Komarek Greaves And Company Briquetting roll structure with mold inserts
US3409236A (en) * 1965-12-21 1968-11-05 Combustion Eng Segmented grinding roll assembly
US3969062A (en) * 1975-07-22 1976-07-13 K. R. Komarek, Inc. Briquetting roll having removable mold segments
US4097215A (en) * 1977-05-12 1978-06-27 K. R. Komarek, Inc. Segmented briquetting roll
US4217951A (en) * 1976-12-10 1980-08-19 Voest-Alpine Aktiengesellschaft Continuous casting strand guide roller
US4232834A (en) * 1979-08-13 1980-11-11 Minneapolis Electric Steel Castings Company Roll crusher
US4306846A (en) * 1980-07-25 1981-12-22 K. R. Komarek Inc. Briquetting roll and mold segment therefor
EP0049929A2 (en) * 1980-10-10 1982-04-21 La MECCANICA di Reffo O. & C. S.a.s. Press roller for an extrusion machine for agricultural use
DE3804273A1 (en) * 1988-02-11 1989-08-24 Krupp Polysius Ag Roller mill and method for coating a roller
WO1992020515A1 (en) * 1991-05-21 1992-11-26 Crine Rene Roll press, removable cladding and method of fitting
US5199657A (en) * 1990-06-12 1993-04-06 Krupp Polysius Ag Roller mill
DE4344206A1 (en) * 1993-12-23 1995-06-29 Kloeckner Humboldt Deutz Ag Twin=roll machine for pressing friable materials
EP0661099A1 (en) * 1994-01-04 1995-07-05 Loesche Gmbh Milling roller
US20100129487A1 (en) * 2008-11-24 2010-05-27 Xerox Corporation Mass-less belt mandrel
US20160023418A1 (en) * 2013-04-17 2016-01-28 Maschinenfabrik Köppern Gmbh & Co. Kg Press roller
US20160075097A1 (en) * 2013-04-17 2016-03-17 Maschinenfabrik Köppern Gmbh & Co. Kg Press roll

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2751207A (en) * 1953-08-17 1956-06-19 Joy Mfg Co Drum type disintegrating head for continuous miner
US2798676A (en) * 1954-08-04 1957-07-09 Poor & Co Split shell for roll crusher
US2801838A (en) * 1954-10-21 1957-08-06 Joy Mfg Co Rotary disintegrating drum for continuous miner
US3077634A (en) * 1959-01-28 1963-02-19 Komarek Greaves And Company Briquetting roll structure with mold inserts
US3409236A (en) * 1965-12-21 1968-11-05 Combustion Eng Segmented grinding roll assembly
US3969062A (en) * 1975-07-22 1976-07-13 K. R. Komarek, Inc. Briquetting roll having removable mold segments
US4217951A (en) * 1976-12-10 1980-08-19 Voest-Alpine Aktiengesellschaft Continuous casting strand guide roller
US4097215A (en) * 1977-05-12 1978-06-27 K. R. Komarek, Inc. Segmented briquetting roll
US4232834A (en) * 1979-08-13 1980-11-11 Minneapolis Electric Steel Castings Company Roll crusher
US4306846A (en) * 1980-07-25 1981-12-22 K. R. Komarek Inc. Briquetting roll and mold segment therefor
EP0049929A2 (en) * 1980-10-10 1982-04-21 La MECCANICA di Reffo O. & C. S.a.s. Press roller for an extrusion machine for agricultural use
EP0049929A3 (en) * 1980-10-10 1983-03-16 La MECCANICA di Reffo O. & C. S.a.s. Press roller for an extrusion machine for agricultural use
DE3804273A1 (en) * 1988-02-11 1989-08-24 Krupp Polysius Ag Roller mill and method for coating a roller
US5199657A (en) * 1990-06-12 1993-04-06 Krupp Polysius Ag Roller mill
FR2676659A1 (en) * 1991-05-21 1992-11-27 Crine Rene Press rollers, removable shields and mounting PROCESS.
WO1992020515A1 (en) * 1991-05-21 1992-11-26 Crine Rene Roll press, removable cladding and method of fitting
DE4344206A1 (en) * 1993-12-23 1995-06-29 Kloeckner Humboldt Deutz Ag Twin=roll machine for pressing friable materials
EP0661099A1 (en) * 1994-01-04 1995-07-05 Loesche Gmbh Milling roller
US20100129487A1 (en) * 2008-11-24 2010-05-27 Xerox Corporation Mass-less belt mandrel
US8827687B2 (en) * 2008-11-24 2014-09-09 Xerox Corporation Mass-less belt mandrel
US20160023418A1 (en) * 2013-04-17 2016-01-28 Maschinenfabrik Köppern Gmbh & Co. Kg Press roller
US20160075097A1 (en) * 2013-04-17 2016-03-17 Maschinenfabrik Köppern Gmbh & Co. Kg Press roll
JP2016518255A (en) * 2013-04-17 2016-06-23 マシネンファブリーク・ケッペルン・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング・ウント・コンパニー・コマンデイト・ゲゼルシャフト Press roller
JP2016522749A (en) * 2013-04-17 2016-08-04 マシネンファブリーク・ケッペルン・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング・ウント・コンパニー・コマンデイト・ゲゼルシャフト Press roller
US9744736B2 (en) * 2013-04-17 2017-08-29 Maschinefabrik Koeppern Gmbh & Co. Kg Press roll
US9744737B2 (en) * 2013-04-17 2017-08-29 Maschinenfabrik Koeppern Gmbh & Co. Kg Press roller

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