US3079007A

US3079007A - Apparatus for removing and replacing charging hole covers of coke ovens

Info

Publication number: US3079007A
Application number: US58360A
Authority: US
Inventors: Walter A Bowman; Edgar W Hunter; Palumbo Pete
Original assignee: United States Steel Corp
Current assignee: United States Steel Corp
Priority date: 1960-09-26
Filing date: 1960-09-26
Publication date: 1963-02-26
Anticipated expiration: 1980-02-26

Description

Feb. 26, 1963 w. A. BOWMAN ETAL 3,079,007

APPARATUS FOR REMOVING AND REPLACING CHARGING HOLE COVERS 0F COKE OVENS 5 Sheets-Sheet 1 d MMM 0 A R W ME n N W 0 r WO m N M r H A .w n 7 m m W E Filed Sept. 26, 1960 Feb. 26, 1963 w. A. BOWMAN ETAL 3,079,007

APPARATUS FOR REMOVING AND REPLACING CHARGING Filed Sept. 26, 1960 HOLE COVERS 0F COKE OVENS 5 Sheets-Sheet 2 ,d mWMm .4 50mm W BWM A 4W W.

R A ER TAE My WEP l lfilw m m am 1 a 9m Feb. 26, 1963 w. A. BOWMAN ETAL 3,0

APPARATUS FOR REMOVING AND REPLACING CHARGING HOLE COVERS OF COKE OVENS 5 Sheets-Sheet 3 Filed Sept. 26, 1960 Feb. 26, 1963 A. -BOWMAN ETAL REMOVING AND 3,079,007 REPLACING CHARGING KE OVENS APPARATUS FOR HOLE COVERS 0F C0 5 Sheets-Sheet 4 Filed Sept. 26, 1960 Wm vN //V l/E/VTORS WAL TE A. BOWMAN, EDGAR m HUNTER and PE TE PAL UMBO By 9 Attorney Feb. 26, 1963 w. A. BOWMAN ETAL 3,079,007

APPARATUS FOR movmc AND REPLACING CHARGING nous COVERS 0F COKE OVENS Filed Sept. 26, 1960 5 Sheets-Sheet 5 INVENTORS WAL 7'51? A. BOWMAN, EDGAR W HUNTER and PETA-:AL MB Attorney ice APPARATUS FDR REMGVWG AND REPLACING CHARGING HGLE CU'i/IERS OE CURE @VENF: Waiter-A. Bowman, Pittsburgh,- EdgarW. Hunter, Finleyville, andPete Palnmbo, Bethcl Park, Pa, assignors to glnited States Steel Corporation, a corporation of New rsey Filedseptaz, 196i), Ser. No. 58,360 6 Glaims. (Cl. 212-4)- This invention relates towapparatus for removing and replacing charging 'hole covers of coke ovens. Thecoking coal is transferred-from the coke oven coal bunker by a larry car. which runs .over the tops of the coke oven batteries. The coal is chargedto the individual ovens from bins-on the'larry car through severalholes onthe top of each oven. Theholes are covered with lids which previous to our invention were manually removed by a workman with the aid of hooked bars After the oven was charged and the larry car moved from over the holes the lids were replaced by the workman in the same manner. Because of the heat and the dirty conditions which exist on the top of coke oven batteries this work was diflicult and dangerous.

It. is therefore an object of our invention to provide apparatus for removing and replacingcharging hole covers on coke ovens automatically.

This and other objectswill be more apparent after referring tothe following specification and attached drawings, in which:

FIGURE 1 is a plan view showing a larry car with the apparatus of our invention incorporated thereon;

FIGURE 2 is a front elevation of FIGURE 1;

FIGURE 3 is. a view taken on the line III-III of FIGURE 2;

FIGURE 4 is an enlarged view, similar to FIGURE 3, but showing the parts in greater detail;

FIGURE 5 is a view taken on the line VV of FIG- URE 4;

FIGURE 6- is a view taken on the line VIVI of FIGURE 5;

FIGURE 7 is a view, similar to FIGURE 4, showing the linkage operation for oscillating the cover plates;

FIGURE 8 is a view, similar to FIGURE 4, showing the linkage operation for lifting and replacing the cover plates;

FIGURE 9 is a vertical section of the lifting head of our invention;

FIGURE 10 is a side elevation of FIGURE 9, with the tongs in closed position;

FIGURE 11 is a view, similar to FIGURE 9', but showing the parts in difierent position;

FIGURE 12 is an isometric view showing a detail of the lifting head;

FIGURE 13 is a schematic 'view of the hydraulic system used in our invention;

FIGURE 14 is an elevation of the lid used to cover the hole in the coke oven top.

Referring more particularly to the drawings reference numeral 2 indicates the top of a coke oven having several holes 4 therein. A lid 6 is provided for each of the holes and as shown in FIGURE 14 consists of a flat plate portion 8 and a conical upper portion 10 connected by a square stem 12 welded to each of the members 8 and 10. It will be seen that the base of the cone 10 is larger than the cross section of the stem 12 so as to provide a shoulder 14 for a purpose which will appear later. Rails 16 are provided on the top of the coke ovens for supporting a lar-ry car 18 shown in dash dot lines in FIG-

URES

1, 2 and 3. A lid handling device 20 is associated with each of the holes 4 of the coke oven. Since the lid handling'devices are essentially alikezonly one will be described inqdetail. A pair of brackets 22 are supportedfrom a beam 24' forming part of the larry car, 18. Bearings 26' are attached-to thebearn 24 along the length thereof and support a longitudinal.- shaflt 28. Each of thellid handling devices includes a T-shaped framev 30 which is supported at the top thereof by means of a pair of links 32 keyed to the shaft 28. Thebottom of. the frame 30 is pivotally connected toa pair of links 34; one atreach end thereof, links 34 being provided with bifurcated ends as shown with the other ends of the links being pivotally connected to the bottom of brackets 22. A pair of bearings or

pillow blocks

36 and 38 are supported on the frame 30in vertical alignment and rotatablysup port a rod. 40. The bottom ofthe rod 401's connected to a double universal joint 42 which in turn carries a threaded rod Mat its lower end; Tube 46 of a lifting head 48 is supported by the nod 44 with a spring 50 surrounding the rod 44 between the universal joint 4-2 and the closed top of tube 46. A pair of L-shaped arms 52 are pivotally mounted to the top of tube 46. U-shaped lugs 54 are welded to the tube 46 and limit-outward movement of the arms 52.

Alignednopenings

56 and 58 ore provided in the tube 46 and arms 52 to receive linksotl', one pivot-ally attached-to each of thearms 52. The inner ends of links 60 are pivotally connected-to each other and to a clevis 62by means of a pin 64-. The clevis 62 is attached to the bottom of a rod 66 which extends up wardly through the top of tube 46 with its upper end being connected to a double acting hydraulic cylinder 68 attached-to the rod 40=fior movement therewith. The shaft 28 is rotated by means of a link 7% keyed thereto with free end of the link 70 beingpivotally secured to the piston rod of a double acting cylinder 72' pivotally mounted on a bracket '74 mounted on the l-arry car 18 The rod 40 is prevented from movingvertically with respect to member 34}- by' means of a collar 76- attached to the rod 40- beneath .the bearing 36 and a clamp 73 secured to the rod 4! above thebearing 38. The. clamp 78 is secured to a lever 80, the other end of which is pivotally connected to a clevis 82 havinga stem 83 about which is pivotally supported one end of a link 84; The other end of link 84 is pivotally connected to a clevis 86 which in turn is pivotally connected to a link 88 keyed toa shaft 959. A plurality of bearings 92 are attached to the beam 24 on the side opposite bearings 26. The shaft is rotatably supported in the bearings 92. A link 94 is keyed to the shaft 9@ adjacent the center of the l-arrycar. A link 96 has one end pivotally connected to link 914 and its other end pivotally connected to a lever 98 pivotally mounted on a shaft Iii!) mounted in spaced beatings I02 supported by the larry car. Theother end of lever $8 is connected to the bottom end of a connecting-rod $04; the upper end of which is connected to a crank 11%;- The crank 1% is driven by a motor N8 through a gear reducer 11-0. As seen in FIGUREv 13 cylinders 68 are connected in parallel by means of iieXi-ble tubing 112 and 11-4 to manifolds 116 and 118 which in turn are connected to an oil power unit 120. The cylinder 72 is also connected to the oil power unit 129.

In the operation of our device the larry car is moved along the coke oven battery until it is positioned over the coke oven chamber to be charged with the lifting heads 48 spotted over the respective charging holes 4. Fluid is introduced into the top of cylinders 68 so as to cause the arms 52 to move outwardly to the position shown in FIGURE 9. Fluid is then introduced into the top of cylinder '72 so as to cause all of the lifting heads 48 to move downwardly with the tubes 46 sliding d wnwardly over the cone 10 to the position shown in FIG- URE ll. Fluid is then introduced into the bottom of the cylinder 68 so as to cause the arms 52 to move in- Patented'. Feb. 26, 1.963

wardly to the position shown in FIGURE 11. In this position the arms 52 engage the non-circular stem 12. The motor 163 is then started in operation to cause the shaft 96 to oscillate. Oscillation of shaft 9% causes the rods 46 to oscillate so that the lifting heads &3 and the lids 6 supported thereby oscillate to break the seal be tween the lid and the charging hole frame. Fluid is then introduced into the bottom of cylinder '72, thus raising the lifting heads 48 and the lidsd. The larry car 18 is then moved to position the bins of the larry car over the holes '4 and coal is discharged into the oven. After the oven is charged the lifting heads 43 and lids 6 are positioned over their respective holes 4 and fi-uid introduced into the top of cylinder 72 to lower the lids 6 into position. The motor 103 is then energized to cause oscillation of the lifting heads 43 to create a seal between the lids and the slightly tapered charging hole frame. After the seal has been formed, fluid is introduced into the top of cylinder 68 to release the clamping arms 52 after which fluid is introduced into the bottom of cylinder 72 to raise the lifting heads 48. The larry car is then ready to repeat the cycle on another chamber to be charged.

While one embodiment iofour invention has been shown and described, it will be apparent that other adaptations and modifications may be made without departing from the scope of the following claims.

We claim:

1. In an apparatus for handling coke oven charging hole covers having a conical portion spaced from and attached to the main portion of the cover by means of a non-circular stem which appanatus includes a car, the improvement which comprises a lifting head mounted on said car for vertical movement, said lifting head including a vertical tubular member for receiving the said conical portion and a pair of diametrically opposed arms pivotally mounted on said tubular member for movement about horizontal axes, means for moving said arms about their axes from a position in engagement With said stem to a position beyond said conical portion, means for raising and lowering said lifting head, means to permit limited lateral movement of said lifting head into vertical alignment with said stem, and means for oscillating said lifting head about a vertical axis.

2. In an apparatus for handling coke oven charging hole covers having a conical portion spaced from and attached to the main portion of the cover by means of a non-circular stem, which appanatus includes a car, the improvement which comprises a lifting head mounted on said car for vertical movement, said lifting head including a vertical tubular member for receiving the conical portion and a pair of diametrically opposed arms pivots-11y mounted on said tubular member for movement about horizontal axes, cans for moving said arms about their axes from a position in engagement with said r stem to a position beyond said conical portion, a generally vertical shaft attached to and extending upwardly from said lifting head, universal joint means interposed between said lifting head and said vertical shaft, a support for rotatably supporting said shaft, means for raising and lowering said support with the lifting head attached thereto, and means for oscillating said shaft.

3. In an apparatus for handling coke oven charging hole covers having a conical portion spaced from and attached to the main portion of the cover by means of a non-circular stem which apparatus includes a car, the improvement which comprises a plurality of spaced apart lifting heads mounted on said car for vertical movement, each of said lifting heads including a vertical tubular member for receiving the said conical portion and a par of diametrically opposed pivotally mounted on said tubular member for movement about horizontal axes, means for moving each of said pairs of arms about their axes from a position in engagement with one of said stems to a position beyond the associated conical portion, means for raising and lowering said lifting heads, means to permit limited lateral movement of said lifting heads into vertical alignment with the stem of the covers, and means for simultaneously oscillating said lifting heads about their vertical axes.

4. In an apparatus for handling coke oven charging hole covers having a conical portion spaced from and attached to the main portion of the cover by means of a non-circular stem which apparatus includes a car, the improvement which comprises a plurality of spaced apart lifting heads, each of said lifting heads including a vertical tubular member for receiving the conical portion and a pair of diametrically opposed arms pivotally mounted on said tubular member for movement about horizontal axes, means for moving each of said pair of arms about their axes from a position in engagement with one of said stems to a position beyond the associated conical portion, a generally vertical shaft attached to and extending upwardly from each of said lifting heads, universal joint means interposed between each lifting head and its vertical shaft, :3. support for rotatably supporting each of said shafts, means for simultaneously raising and lowering said supports with the lifting head attached tllilereto, and means for simultaneously oscillating said 5 afts.

5. In a car for handling coke oven charging hole covers the improvement which comprises a lifting head mounted on said car for vertical movement, means for selectively causing said lifting head to engage and disengage the covers, means for raising and lowering said lifting head, means for oscillating said lifting head about a vertical axis, and means to permit limited lateral movement of said lifting head independently of said car for alignment of said head centrally on the cover it is handling.

6. The device of claim 5 wherein said last named means includes a shaft carried by said car and universal joint means operably interconnecting said shaft and said lifting head.

References Cited in the file of this patent UNITED STATES PATENTS Schra-mm Dec. 6, 1938

Claims

1. IN AN APPARATUS FOR HANDLING COKE OVEN CHARGING HOLE COVERS HAVING A CONICAL PORTION SPACED FROM AND ATTACHED TO THE MAIN PORTION OF THE COVER BY MEANS OF A NON-CIRCULAR STEM WHICH APPARATUS INCLUDES A CAR, THE IMPROVEMENT WHICH COMPRISES A LIFTING HEAD MOUNTED ON SAID CAR FOR VERTICAL MOVEMENT, SAID LIFTING HEAD INCLUDING A VERTICAL TUBULAR MEMBER FOR RECEIVING THE SAID CONICAL PORTION AND A PAIR OF DIAMETRICALLY OPPOSED ARMS PIVOTALLY MOUNTED ON SAID TUBULAR MEMBERS FOR MOVEMENT ABOUT HORIZONTAL AXES, MEANS FOR MOVING SAID ARMS ABOUT THEIR AXES FROM A POSITION IN ENGAGEMENT WITH SAID STEM TO A POSITION BEYOND SAID CONICAL PORTION MEANS FOR RAISING AND LOWERING SAID LIFTING HEAD, MEANS TO PERMIT LIMITED LATERAL MOVEMENT OF SAID LIFTING HEAD INTO VERTICAL ALIGNMENT WITH SAID STEM AND MEANS FOR OSCILLATING SAID LIFTING HEAD ABOUT A VERTICAL AXIS.