US1446753A - Crusher - Google Patents

Description

Feb. 27, 1923.

J. E. KENNEDY ET AL CRUSHER Filed May '7, 1921 3 sheets-sheet l Suva/who;

- Feb. 27, 1923. 1,446;753

J. E. KENNEDY ET AL CRUSHER Filed May 7, 1921 Ssheets-sheetfl J. E. KENNEDY ET AL CRUSHE R F1 led. May '2 1921 3 sheets-sheet 3 Swumtozs I Patented Feb, 27,1923. I v Q UNITED, STATES JOSEPH n xmmnpvm I A. I 1 1,446,753 PATENT OFFICE.

CHARLES L. CARMAN, OF NEW YORK, N. Y.; SAID CARMAN .AS SIGNOR TO SAID KENNEDY.

' CRUSHER.

Application filed May 7,

- Tocll whom it may concern:

Be it known that we, Jos-EPH E. KENNEDY and CHARLES L. CARMAN, citizens of 'the- 'UIHted States, and residents of the bor of which the following is a specification.

This invention relates to crushers of the type commonly termed as jaw crushers for crushing rock, ore and the like. In crushers of this character an open rectangular frame is provided constructed of separate side and end members due'to the size 'of the frame, and secured together with one of the end members arranged as a fixed crushing jaw. The ore crushing jaw is in opposed relation to-the. fixed jaw and means for supporting and actuating the same are mounted upon the side members, and the stresses of the crushing forces applied to or imposed upon the end frame members and through said members to the side members of the frame.

The members of the frame during the operation of the crusher are subjected'to heavy tensile stresses, and to maintain the rigidity of the frame and to deliver or transfer the stresses of the crushing forces from the end members to the side members of the frame, the side members are connected to the end members by.,arranging vertical grooves of rectangular shape in cross section in the inside faces of the side members adjacent op-- posite nds and'the vertical sides of the ends are arranged with tenons to seat in said grooves, and then passing tie rods or bolts through the side members and the neutral or median plane of the end members. By this arrangement of connecting the members of the frame practically all of the crushing forces imposed upon the end members are transferred to the outer walls of the 45 vertical recesses in the side members not only exerting an outward bending movement to the'side members which tends to strip the nuts from the tie rods and also break such rods, but also to fracture and 5.0 rupture the side frames. transversely in a.

line with the end walls of the vertical recesses or grooves. The crushing chamber is of V or wedge shape with the wider portion of the chamber at the receiving end, and should rock or ore of a size just sulfi- 1921. Serial No. 467,571.

cient to. enter between the crushing jaws be fed to the crushing chamber as the crushmg pressure is applied theretoit will impose the resistance to such forces directly on' to the end walls of the vertical grooves or recesses in the side members at the top of said members, or the weakest point, partlally fracturing the side members transversely in a line with the end of such recesses, whichfracture gradually works downward for the entire width of the side members rupturing or breaking off the entire end portionof the side member necessirating the renewal of the same.

Itis the principal object of the present invention to overcome theabove disadvantages by constructing and arranging the connection of the side members of the frame so that the resistance of'the'stresses of the crushing forces upon the end members of the frame will be imposed upon the members of the frame as a tensile strain in the neutral or median plane extending through the longitudinal and vertical plane of the members, and without any tendency of affecting a bending moment of the side members, and to provide means forefi'ecting this result which are simple and cheap in construction and highly eflicient in use.

' :A further object of the invention relates to the provision of means for squaring the frame members preparatory to securing the of the crusher including a pitman to actuate the toggle members to oscillate the one jaw. The pitman, due to the nature of the work it is required to perform, is necessarily made bulky and of considerable weight. It has heretofore been the practice to support the pitman entirely from its eccentric support and due to the weight thereof there is considerable friction set up between the pitman and its support with the consequent wearing of the parts, and it is a further object of the invention to provide an auxiliary yielding support for the pitman to partially reline 3-3 of'Figure 2 looking in the direc-- tion of the arrows.

Figure 4 is an enlarged detail view 1n plan of a connection of the side and end members of the frame; and

Figure 5 is an enlarged plan view of an end portion of the frame showing a modified embodiment for carrying out the invention.

In carrying out the embodiment of the invention shown in Figures 1 to 5 a frame of rectangular open frame structure is provided, and as crushers of this type are necessarily of large size the frame is constructed of separate sections comprising opposite side members '7, 8 and end members 9, 10 arranged to be mounted upon a base or foundation, usually of concrete, by bolts imbedded in the concrete passing through perforations 1n lugs 11 projecting from the side members and nuts threaded onto the bolts. The frame members are made of. cast steel and to reduce the weight of the end members and still retain rigidity the casting is cored out providing a series of chambers separated by reinforcing Webs or partitions 12 as shown in Figures 2 and 3.

The side and end members of the frame are connected at the opposite vertical ends by providing said ends with alined perforated lugs. 13 and 14 arranged so that the lugs of the'end members will inter-engage with the lugs of the side members with pintles 15 engaging in the perforations of the lugs, the pintles being held against longitudinal movement by transverse keys 16.

The end member 10 serves as a fixed crushing jaw of the crusher and is arranged so that the inner face diverges upwardly and is provided with a facing of wear resisting material, such as manganese steel plates 17 fastened thereto by bolts 18. A crushing jaw 19 having a facing 6f wear resisting material'20, similar to the facing of the end member 10 is rotatably mounted upon a shaft 21 supported upon the side members to suspend the jaw 19 from the shaft upon the side members in opposed relation to the crushing face of the end member 10 and to have oscillatory movement toward and away from said end member. The jaw 19 is arranged with the lower end yieldingly positioned in closer proximity to the face of the member 10 than at the end at which it is supported forming a crushing chamber of V or wedge shape with the wider portion at the top to constitute the receiving end of the chamber for the material to be crushed.

To oscillate the jaw 19 a pitman 22 is hung from an eccentric shaft 2-3 journalled upon the side members 7, 8 and retained in position by caps 24, the pitmanbeing sus pended from the shaft by a cap 24 engaging over the shaft and secured to the pitman by bolts 25. The eccentric being connected to and rotated from a suitable source of power, as by a belt (not shown) passing around either one or both fly wheels, 26 fixed to the shaft, the movement of the eccentric shaft reciprocating the pitmanrin a vertical direction? The pitman has a toggle connection with the movable crushing jaw 19 comprising a pair of toggle members 25, 2G in the form of plates with the longitudinal edges of rounded orcircular shape in cross section, as Shown at 27. These toggle plates are located at opposite sides of the pitman with the circular portions at the longitudinal edges engaging semi-circular seats in bearings 28 mounted in the pitman parallel with the eccentric shaft 23. The opposite circular longitudinal edges of the toggle member 25 engages in a circular recess in a bearing 29 fixed upon a web 30 projecting forward from the end frame member 9 with shims 31 interposed between the rear of said bearing and said frame member. The toggle plate 26 is operatively connected to the oscillatory crushing jaw 19 by the circular longitudinal edge portion 27 of the plate engaging in a circular seat in a bearing 32 carried at the rear of of the jaw. In Figure 2 the members are shown in position with the pitman in its lowermost position and the jaw 19 fully receded from the crushing face 17, and it will be ObVlOuS that as the pitman is moved upward by the rotation of the eccentric shaft 23 that the toggle members 25. 26' will be moved to position to extend substantially in a horizontal direction thereby moving the aw 19 in a direction toward the crushing face 17. The

toggle members are yieldingly maintained in operative relation to the pitman and crushing jaw 19 by a spring 33 co-operating with a rod 34 pivotally connected at 34 to the jaw 19 the opposite end slidably engaging in a' perforation in a lug 35 projecting downwardly from the end member 9, the spring being coiled about the end of the rod projecting beyond the lug 35 and confined between said lug and an abutment 36 on the end of the rod.

The connection of the frame members is in the nature of a hinge joint connection with the axes of the pintles in line with the new.

tral or median planes extending through the longitudinal and vertical plane of the members. By this arran ement the frame members may have a slig t movement relative to each other due to the stresses of the crushing forces instead of the tendency of a springing and bendin moment of the metal of the side members. method of connecting the frame members the tensile strain exerted by the crushing forces is imposed on'the frame members in the neutral or median plane extending through the longitudinal and vertical plane of the members thus placing all ofthe metal of the frame members under tension without any possibility of introducing a bending moment Which may tend to fracture and rupture the frame members.

In the modification of connecting the frame members shown in'Figure 5 instead of the ends ofthe frame members being arranged with perforated lugs for the reception of the pintles. the inner faces of the side members 7 8 adjacent opposite ends are provided with vertical recesses 37 of curved shape in cross section, and the end members 9, 10 have the vertical ends rounded, as at 38, to substantially correspond to and engage in the ,vertical recesses in the side member thereby providing a pivotalconnection between the frame members. The frame members are secured or tied together by rods 39 having the opposite ends threaded and passing through perforations in the side members and the end members with nuts threaded on the ends of the rods. The rods are located at one side of the neutral or median plane of the end member thereby practically eliminating the exerting of any bending moment upon the side members due to the stresses of the crushing forces.

For the purpose of squaring the frame members preparatory to securing the frame to the crusher foundation, usually consisting of concrete, by means of bolts imbedded in the material of the foundation passing through'the perforated frame lugs 11, and for preserving the rectilinear form of the frame and the alinement of the bearings, the lateral portions of the web 30 are extended forwardly and inwardly, as at 40, to lie contiguous to the inner faces of the side members and fixed to the side members by bolts, as shown at 41.

To relieve the weight of the pitman 22 from its eccentric support 23 to prevent undue wearing of the parts, and to assist the eccentric lifting the pitman, an auxiliary yielding support is provided for the pitman. This support comprises one or more springs 42 (onlv one being shown) suspended from a shaft 4fi5 'extending transversely of the frame and supported at opposite ends by the side frame members 7, 8, said shaft passing through openings 44 in the end Walls of the Turthermore, by the PIBSBIIL' pitman. (Figure 2.) The spring is suspended from the shaft by rods 45 connected to a yoke 47 mounted on the shaft by bolts 48 passing transversely through the shaft 43,

the opposite ends Of the rods being formed with hooks for the engagement ofthe lower coil of the spring. 'The rods'45 preferably I extend through the spring as shown. The spring is connected to the pitman by 'a'rod or rods 49 passing therethrough and having a hook formed at the end to engage the upper coil of the spring, the opposlte end of the rods passing through openings ina member 50 extending transversely of the bottom of the member 50 in spaced relation to the nuts 51.

Having thus described our'invention we claim:

1. In a crusher, a frame comprising side and end members having theends arranged.

to interengage, and means to interlock with the interengaging portions of the side and end members arranged to apply the stresses of the crushing forces to said members in-a line extending through the side members in a plane longitudinally and centrally thereof.'

2. In a crusher, a frame of'rectangular shape comprising separate slde members and end members adapted to receive the crushmembers arranged with perforate interengaging portions, and means to engage the perforations of said interengaging portions to connect the side and end members and said interengaging portions and connecting means arranged to impose the resistance of the stresses of the crushing forces applied to the end members onto the side members in a plane extending centrally therethrough.

3. In a crusher, a frame comprising opposite side membersand end members adapted to receive the crushing forces and arrangedwith perforated interengaging portions at the ends, and pintles to engage the perforations of said interengaging portions to connect the side and end members and arranged to impose the stresses of the crushing forces on the frame members in a'neutral plane extending longitudinally through the members without exerting a bending -moment on the material of the members.

4. In a. crusher, a frame comprising op-' 10o 'ing forces with the end portions of said Y posite side and end members, the end members being adapted to, receive the crushing forces and o'ne 'of which members constitutes a crushing jaw and the end members arranged at the enjds to interengage with the ends of the sidei'members, and means to interlock withthe-interengagiag portions of the side and end members to connect the Same arranged to permit of. movement of the members relative to each other and impose the stresses of the crushing forces on the frame members in a neutral plane extending through the longitudinal and vertical planes of the. members.

5. In a crusher, a frame comprising opposite side and end members, each of said miembers arranged with lugs at the opposite ends with the lugs of one member arranged to interengage with the lugs of another member and. the axis of the lugs arranged in a line centrally of the frame members.

6. In a crusher. a frame comprising opposite side and end members, each of said members having perforated alined lugs at the opposite ends with the lugs of the end, members arranged to lnterengage with the lugs of the side members and the axis of the lugs arranged in a line centrally of the members, and pintles to engage in the perforations of the interengaged lugs.

7. In a crusher, a frame comprising ,op-

posite side and end members having a hinge joint connection at the ends with the axis of the hinge arranged in a line centrally of the side and end members for the purpose specified.

' 8. In a crusher, a frame comprising opposite side and end members having an articulated joint connection with each other arranged to transfer the stresses of the crushing forces as a longitudinal strain on the side members in a plane centrally of said members.

9. In a crusher, a frame comprising opposite side and end members each of said members having alined' perforate lugs arranged at the opposite ends and the lugs of the end members adapted to interengage with the lugs of the side members, and

pintles to engage in the perforations of the interengaged lugs arranged with the axes of the pintles in the neutral plane ofthe respective members.

10. In a crusher, a frame comprising side members having transverse recesses of eircular shape in cross section in the inner faces adjacent opposite ends, and end members to engage between the side members and having the ends rounded to correspond to and engage in the transverse recesses of the slde members, and means to tie the side men.

here to the end members. v .11. In a-crusher, a fl ime comprising side members having transverse recesses of circular shape In cross section 1n the inner face ad acent opposite ends, and end members to engage between the side members and having the ends rounded to correspond to and engage in the transverse recesses of the side members, and tie rods passing through the side and end members at the outer side of the neutral plane of the end *members for the purpose specified.

engage in the transverse recesses of the said members, and means for tying the side members to the end members arranged to impose the stresses of the crushing forces on the end members in the neutral plane extending through the longitudinal and vertical plane of the members.

13. In a crusher, a frame comprising side and end membershavmg a hinge oint connection and one of the end members arranged asa fixed jaw'of the crusher, and webs projecting inwardly from the other end member arranged to be fixed to the side members forward of the inner-face of said end member to maintain said members in parallel relation to each other and in right angled relation to the end members for the purpose specified.

14. In a crusher, a frame comprising separate side and'end members arranged to be secured together to form a rectangular open frame structure and one of the end members constituting a jaw, of the crusher, and webs extending inward from the other end member and arranged to be secured to the opposite side members at apoint forward of said end member for pitman at the end opposite to its eccentric Support for the gurpose specified.

. J SEPH E. KENNEDY. CHARLES CARMAN.

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