US3075712A

US3075712A - Toggle assembly

Info

Publication number: US3075712A
Application number: US108640A
Authority: US
Inventors: Kautz Harry Paul
Original assignee: Mine and Smelter Supply Co
Current assignee: Mine and Smelter Supply Co
Priority date: 1961-05-08
Filing date: 1961-05-08
Publication date: 1963-01-29
Anticipated expiration: 1980-01-29

Description

Jan. 29, 1963 H. P. KAu'rz 3,075,712

I TOGGLE ASSEMBLY Fnd may s, 1961 ATTORNEY United States Patent O Filed May 8, 1961, Ser. No. 108,640 2 Claims. (Cl. 241-2S5) My invention relates to jaw type crushing machines and has particular reference to an improved toggle assembly for stabilizing and guiding a crusher jaw mounted at its lower end on an eccentric in such a machine.

It is common practice to stabilize and guide one end of a jaw of an ore crusher by a toggle assembly which causes that end or part of the jaw to which the assembly is connected to have generally reciprocating motion, but all of them, insofar as I am aware, in order to maintain the compression required for the toggle when the machine is idling or during the inactive or retractive portion of the crushing cycle, require a rod, which is elastically tensioned between the jaw and crusher frame, to hold the ends of the toggle link or plate between the semi-circular (usually concave) seats provided in the jaw and in such lframe. The principal object of my invention, therefore, is to eliminate the necessity of using such an elastically .tensioned rod and thereby save power and permit accurate, easy assembly of parts for the purpose of inst-allation or adjustment.

Another object of my invention is to provide a simple and positive means of lubricating all bearing surfaces of my invention from a central location.

These and other objects of my invention will become apparent from the specification and drawings forming a part of this application in which:

FIG. l is a vertical sectional view of crusher jaws showing my toggle assembly applied thereto, and

FIG. 2 is a top plan view of my toggle assembly.

Referring in detail to such drawings, the mechanism comprises crusher jaws designated generally by the letter I, mounted on eccentrics E, above which is disposed a hopper H. Inasmuch as the jaws and hopper form no part of the present invention, they will not be further described. The toggle assemblies are attached to the upper end-s of the jaws and the supporting frame of the machine and comprise the following parts:

Extending laterally from the rear of each jaw is a plate carrying a divided journal designated generally by the letter B. Such journal comprises a half journal 4 integral with said plate and a two-part journal cap 6, which parts are bolted in laterally spaced relationship to half journal 4. A pivot pin 2 extends through journal B between half journal 4 and the parts of the journal cap, and one end of a toggle link 1 is pivoted on said pin between the spaced parts of the journal cap. The other end of said link is likewise pivoted on a pivot pin 3, which pin extends through a journal of the kind just described. The half journal 4 on this end of the link, however, is provided with an integral lateral extension 5 which is pivoted at its free end in a clevis 11 on a fitted bolt 12. Such bolt is positioned at a right angle to pivot pin 3, thus affording a degree of freedom for the proper alignment of parts of the assembly due to the fact that the link 1 may move about two axes at right angles to each other.

Patented Jan. 29, 1963 ICC The closed end or heel of the clevis bears against a vertical wall of the crusher frame and is secured to such wall by a stud bolt 13 and nut 14. The axis of such bolt is perpendicular to the axes of the fitted bolt 12 and pivot pin 3 for providing another freedom to assure proper alignment of parts of the assembly.

The links and pins may be apertured, hollow, drilled or grooved and provided with necessary grease fittings to insure adequate lubrication of the bearing surfaces. As shown, they are hollow, and the ends of the pins are plugged by plugs 8 except one end of the pins may be provided with a grease fitting.

The complete toggle assembly stabilizes and guides the upper part of a jaw in -a generally vertical reciprocating motion as follows: The machined end of hollow pin 2 can rotate only through an arc of several degrees in its motionless lubricated bearing B, and the hollow connecting rod or link 1, which is securely fastened to the hollow pin 2, can only pivot through an arc about the axis of such pin. Consequently pin 2 is guided as indicated for all loads applied to the hollow link 1, whether such loads are compressive, tensile, or torsional. Also, the axis of pin 2 is guided in an arc about the stationary axis of hollow pin 3, and the radius of this arc can, when desired, be adjusted by replacing the existing hollow link by a shorter or longer link, or the link may be made adinstable for length by telescoping or threading two or more sections together. Thus, the gap or feed opening of the crusher can be adjusted `by the substitution of variable length links.

While I have described my toggle assembly as being connected near the top portion of a jaw, it will be understood that it could be used in other relationships as by being connected to a crusher jaf or pitman near the lower end thereof where such jaw or pitman is supported near its upper end on a hinged pivot or the eccentric portion of a crankshaft.

Having thus described my invention, desire to secure by Letters Patent is:

1. A toggle assembly for stabilizing and guiding a crusher jaw comprising a link, two journals and a clevis, the said link being pivoted at each end thereof in one of said journals for swinging in a vertical direction, one of said journals being adapted to be rigidly connected to the crusher jaw and the other of said journals being pivoted in said clevis for swinging in a horizontal direction, the said clevis being adapted to be rigidly secured to a xed support, whereby said jaw may have limited guided movement in two directions at right angles to each other.

2. The combination as recited in claim 1 wherein said journals constitute split bearings.

what I claim and References Cited in the file of this patent UNITED STATES PATENTS

Claims

1. A TOGGLE ASSEMBLY FOR STABILIZING AND GUIDING A CRUSHER JAW COMPRISING A LINK, TWO JOURNALS AND A CLEVIS, THE SAID LINK BEING PIVOTED AT EACH END THEREOF IN ONE OF SAID JOURNALS FOR SWINGING IN A VERTICAL DIRECTION, ONE OF SAID JOURNALS BEING ADAPTED TO BE RIGIDLY CONNECTED TO THE CRUSHER JAW AND THE OTHER OF SAID JOURNALS BEING PIVOTED IN SAID CLEVIS FOR SWINGING IN A HORIZONTAL DIRECTION, THE SAID CLEVIS BEING ADAPTED TO BE RIGIDLY SECURED TO A FIXED SUPPORT, WHEREBY SAID JAW MAY HAVE LIMITED GUIDED MOVEMENT IN TWO DIRECTIONS AT RIGHT ANGLES TO EACH OTHER.