FI62718C - ROTARY BAR DRUM UP TO DIFFICULTY AND FLEXIBLE LOANSYSTEM - Google Patents

Description

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Patent * oeh rogiatontyrolaan · Anaökan utkgd och utl.ikriftan pubikond 29.10.82 (32) (33) (31) * rr * «* f« t «olk * ui — Bajtrd prlorkat 26.03.73

USA (us) 3UU53I

(71) Chicago Bridge & Iron Company, 800 Jorie Boulevard, Oak Brook,

Illinois 60521, USA (72) Richard Edward O'Brien, Geneva, Illinois, Arthur Raymond Simpson,

Riverside, Illinois, USA (7U) Oy Kolster Ab (5U) The present invention relates to an industrial processing apparatus using a substantially horizontal rotating drum, Rostide, Illinois, USA (7U) Oy Kolster Ab (5U) Supported wheels of a flexible articulation wheel -Roterbar drum upstream of a flexible and flexible western system More particularly, the invention relates to improvements in such a device in which the drum rotates on wheels suspended from stationary chains.

Many industrial processes use a rotating, horizontal metal drum to handle heavy solids. The drum is usually supported to be rotatable using either of two methods. According to the second method, the drum is suspended on two spaced, endless chains. The endless chains run on rod rings mounted on the drum at the same speed as the rotating drum. Such a system is disclosed in U.S. Patent No. 3,269 1 * 38. The drum unit supported by the moving chain withstands high impact loads and impacts on the drum very satisfactorily. According to the second method, the drum is supported on support wheels. See. U.S. Patent Nos. 3,262 1 * 77, 3,701 1 * 87 and 3,709,268.

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According to the present invention, there is provided a new apparatus comprising a horizontally arranged rotatable cylindrical drum for handling solids, especially heavy materials, comprising two separate circular tracks arranged around the drum jacket surface and two separate fixed chains, which support the drum in a cradle manner when the chains are tensioned, each chain having two ends each connected to a support means.

The device is characterized in that the device has a plurality of wheels mounted for rotation on separate axles supported by each chain, the wheels being mounted so as to rotatably contact the other track and thus rotatably supporting the drum, the drum axis being substantially parallel to the wheels. with axles, and the chains and associated wheels transmit the weight of the drum rotated by the drive known per se to the support means.

The chain used in the device of the present invention can be made of joints and the ends of the joints can be connected by a shaft. At least some wheels can be mounted on such axles. Alternatively, the ends of adjacent pivots may be connected together by a pivot pin and at least some wheels may be mounted on axles supported by the pivots between adjacent pivot pins.

An important feature of the present invention is the use of double-ended chains instead of endless chains. In addition, each chain is stationary and its ends are connected to a support means which is fixed or movable over a limited distance. The support means may be provided with means for adjusting the effective length of the chain for raising and lowering the drum, or they may be provided with flexible means for receiving pulling forces on the chains. The flexible device may be a spring or a polymeric material such as rubber or the like. The fluid pressure means may be used as part of the chain support means to receive traction forces on the chains. The fluid pressure device may be a compressed air or hydraulic pressure device.

One, two or more wheels may be mounted on the same axle by a chain, and some or all of the wheels on the axle may be mounted between or outside adjacent articulated plates or elements,

The track gauge against which the wheels run may be a single metal ring or a pair of metal rings mounted on a drum. The type of track to be used should be chosen taking into account the size and weight of the drum and the load placed on it, the number and size of wheels used and whether the wheels are flat or flanged. .

The invention will now be described in more detail with reference to the accompanying drawings, in which: Figure 3 shows a side elevational view of a device with a drum supported rotatably on wheels mounted on two double-ended, fixed chains; Fig. 2 is a front elevational view of the device of Fig. 1 taken along line 2-2; Fig. 3 is a partial cross-sectional view of the device of Fig. 1 taken along line 3-3; Fig. 1+ shows a bottom view of a device substantially similar to Figs. 1 and 2, but in which the hydraulic means supports the chain ends; Fig. 5 is a partial side elevational view of the drum of the device of Fig. 1 in a tilted position; Fig. 6 shows a vertical sectional view of a chain with wheels used to rotatably support the drum of Figs. 1, 2 and 3; Fig. 7 is a cross-sectional view taken along line 7-7 of Fig. 6; Fig. 8 shows a cross-sectional view of a track of two tires, each having a double-flanged wheel; Fig. 9 shows a cross-sectional view of a single-track track with two single-flange wheels on the same tire; Fig. 10 is a cross-sectional view of the track of one tire showing one wheel with a flange on each edge of the rim; Fig. 11 shows a cross-sectional view of the drum and one wheel with the separated wheels running on the surface of the drum and the wheel guided by the wheels of the wheel; Fig. 12 shows a cross-sectional view of a single-track track with a central groove for one wheel, taken along line 12-12 of Fig. 13; Fig. 13 is a plan view of a portion of the chain showing the wheel mounted on a shaft that also connects the ends of adjacent joints; Fig. 1U is a plan view of a portion of the chain showing the wheel mounted on an axle between opposing pivot plates and between the ends of the pivot; Fig. 15 shows a vertical sectional view, partly in cross-section, of a helical spring support at the end of a chain; Fig. 16 shows a vertical sectional view, partly in cross-section, of a fluid-operated support at the end of a chain; Fig. 17 is a schematic vertical sectional end view of a chain having support wheels closely mounted for the drum; Fig. 18 shows a view similar to Fig. 17, but the wheels are more separated here; Fig. 19 is a schematic end elevational view of a chain having support wheels closely mounted for the drum and the wheels located up to the drum equator so that it is easier to arrange the chain ends so that they hang vertically from the support beam and do not touch the drum; and

It 6271 8 Fig. 20 shows a schematic vertical sectional view from the end of a chain with wheels, the size of which gradually increases from the top to the bottom of the U-shaped suspended chain.

In different drawings, similar parts shown are identified by the same numerals, insofar as this is practical.

Figures 1-3 show that the longitudinal, horizontal structural beams 15 and 16 are connected to two horizontal side beams 17 and 18, all of which form a base 10 attached to a base 21. The base 10 supports the other end of the drum. The other end of the drum is supported by a base 10A attached to a base 21Λ. The base 1GA consists of the same parts as the base 10, so that the parts are given the same numbers.

Two support means 25 and 35 are mounted on the base 10 and two support means 5 and 55 are mounted on the base 10A. The support means 35 has two spaced apart vertical beams 36 and 37 »inclined outwards from the drum 70 as shown in Figures 2 and 3. The beam 38 is connected to the upper end of the beams 36 and 37. The beams 39 and 1 + 0 prevent the beams 36 and 37 from tilting in the longitudinal direction. Both supports 36 and 37 are supported on the outside by web and flange welds i + 1 and b2 and on the inside by web and flange welds b3 and UU (Fig. 2). The other support means 25, ^ 5 and 55 are similar in structure to the support means 35 »so that in each support means the same numbers indicate similar parts in the drawings.

The drum 70 is suspended between the support means 25, 35 »* + 5 and 55 by means of two separate, similar chains 60 and 61. The chain 60 is connected at one end to a rod 62 extending through the beam 38 and through the coil spring 63. The retaining nut Sh holds the rod 62 in place and thus places the spring 63 in the compression. See. Fig. 15 · The other end of the chain 60 is connected to a rod 65 extending through the beam 38 and the spring 66. The rod 65 is secured in place by a nut 67 which presses the spring 66 into place. The chain 61 is suspended in the same way as the chain 60, so the same numbers indicate similar parts.

(Chain 60 (Figs. 1, 2 and 6) consists of a joint 80 consisting of one joint plate and alternating joints 81. Each joint 81 consists of two joints 82 and 83 of the joint 5. The shaft 8> k extends through the end of the joint 80. and through the ends of the articulation plates 82 and 83f together, each axle 8U supporting two wheels 85, 86; 85Λ, I 86A; 85B, 86B mounted outside the joints.

j apart from wheels 85A and 86A, as shown in Fig. 6, and wheels 85A and 86A

E are closer to each other than wheels 85B and 86B. The greater clearance between the wheels I 'allows the drum to be tilted by raising or lowering one end of the drum without et- 5, ·. . ..... . , the chain bends or the wheels jump off the track on which they roll.

Figure 1 shows that the two separated tracks 90 and 90A are similar, although they could be different on different shaped wheels on each chain. Track 90 is a single circular ring mounted tightly outside the drum 70.

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Track 90 has a raised center surface 91 and downwardly stepped side surfaces 92 and 93. Wheels 85, 85A and 85B roll on surface 92 and wheels 86, 86A and 86B roll on surface 93 · Tire surfaces 92 and 93 are made wide enough to support the wheels even then when the drum is tilted.

The increased distance between the wheels 85B and 86b and between 85Λ and 86Λ prevents the wheels from getting stuck against the edge or side of the raised center surface 91. The dashed lines shown in Fig. 6 show the position of the track 90 when the drum is tilted, as shown in Fig. 5, and the chain 60 remains vertical. The greater clearance between the wheels per drum equator allows tilting without applying detrimental stress to the wheels or chain. If you do not want to tilt the drum, the clearance between the wheels can of course be considered uniform.

The rotation of the drum 70 can be effected by means of a chain 95 which passes over a ring sprocket 96 mounted on the circumference of the drum. The chain 95 is driven by a sprocket 97 mounted on the shaft 98 in drive engagement with the motor 99 via a reduction gear 100. The sprocket 95 (Fig. 3) is used to adjust the tension of the chain 95. Although one method of rotating the drum 70 has been described above, it will be appreciated that other suitable methods may be used.

It is easy to change the chains supporting the drum 70 according to Fig. 2 by loosening the nuts 6U and 67 and lowering the drum into contact with the upper end of the parts U3 in which the drum rests in the cradle position. The chains can then be completely removed and replaced, or any wheel can be removed and repaired or replaced without disassembling the joints.

The support means shown in Figures 1 and 2 allows the drum 70 to be easily removed by lifting, as there is no obstacle above.

It can be seen from Figure 1+ that the chain 60 is supported at both ends and that the chain 61 is supported at the other end (although it could be supported at both ends) by a fluid pressure means. The hydraulic cylinder 105 is positioned in a supportive connection with one end of the chain 60 and the hydraulic cylinder 106 is resiliently connected to the other end of the chain 60. Hydraulic line 107 extends from pump 108 to cylinder 106, shown in more detail in Figure 16. Hydraulic line 109 extends from line 107 to valve 110 and line 111 extends from valve 110 to cylinder 105- Line 112 extends from pump 108 to valve 113 and line 114 extends from valve 113 to hydraulic cylinder 115, which is connected to with the other end of the chain 6l. With the valve 110 closed, the cylinders 106 and 115 can be used to raise and lower both ends of the drum at a constant speed. To furnish the drum, e.g. to the position shown in Figure 5, to facilitate emptying of its contents, the valve 113 can be closed and the valve 110 opened to drive both hydraulic cylinders 105 and 106 to raise or lower this end of the drum. Although perhaps only the second cylinder 105 or 106 needs to be used to tilt the drum, it is recommended to use both to keep the wheels symmetrically positioned under the drum.

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When tilting the drum 70, it is generally necessary to use a means for holding the knob in a relatively fixed position relative to the jacket chains so that the knob el moves adversely in the longitudinal direction towards the lower end of the tilted drum. A suitable pushing means can be used to hold the rape in place so that it can still rotate. One such arrangement is shown in Figure 5. The pusher ring 120 is mounted on a roller 70 * The pusher wheels 121 and 122 are mounted on shafts supported in block 123. The cob wheel rotates against the other side of the pusher ring 120 to keep the drum in a relatively fixed longitudinal position.

Figures 8-14 and 17-20 show what arrangements of chains, rails and wheels can be used in the invention, although it should be understood that the invention is not limited to the embodiments shown.

In Fig. 8, two separated rings 125 and 126 are welded to the drum 70 and together form a track. Wheels 127 and 128, mounted on the same axle with a drum-supporting chain, roll on rings $ 12 and 126. The circumferential edges of each wheel have a flange to hold the wheel on the tire.

Figure 9 shows a track formed by a flat ring 150 mounted on a drum 70. Two wheels 151 and 152 are mounted on a chain carried by a chain. The outer edge of the circumference of each wheel has a law. The flanges prevent the wheels from moving laterally relative to the ring 130 as the drum rotates.

Fig. 10 shows a track with one flat ring 155 mounted on a drum 70 * A two-flange wheel 136 carried by a shaft in a chain rolls on a ring. The flanges prevent the wheel from moving off the tire as the drum rotates.

The second arrangement is shown in Figure 11. The Bengae 138 is mounted on the drum 70. However, the wheels 85 and 86 roll on the surface of the drum 70 on the municipal side of the ring 138 as well. Such an Arrangement would generally not be useful unless the surface of the drum is substantially smooth and has no grooves or corrugations. Again, it would not be used under normal conditions when the drum is large and the load it carries is relatively large.

Figures 12 and 13 show another embodiment of an arrangement of chains, wheels and tracks that can be used. The chain 140 has alternating joints 141 and 142. Each joint 141 has two articulation plates 143 connected at their ends to a shaft 144 »on which a wheel 145 is mounted between the articulation plates. Each joint 142 has two joint plates 146, the ends of which are connected to the shaft 144 * Figure 12 shows that a grooved ring 147 is mounted on the drum JO · The wheel 145 is designed to roll in the groove of the ring 147 and thus prevents lateral movement of the wheel relative to the tire.

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Figure 14 shows yet another type of sprocket arrangement. The chain-forming alternating joints 150 and 151 · the joint 150 has two separated joint plates 152, each end of which is connected to a pivot pin 155 · the joint 151 consists of two connecting plates 154, the ends of which are connected to pivot pins 155. The shaft 155 is supported by two articulation plates 154 at the ends of the joint 151. between. The wheel I56 is mounted on the shaft 155 and is designed to roll in the ring 147 as shown in Figure 12. The wheel 156 can, of course, be shaped differently. For example, it may have one or two flanges, as shown with the rotation of Figures 6-10.

The wheels are preferably mounted outside the chain joints as shown in Figures 7 and 9 than inside the joints as shown in Figures 15 and 14 to facilitate installation and removal during repair work, as the joint itself does not necessarily need to be disassembled to remove the wheels.

The wheel play on the chain and the size of the wheels must be determined taking into account the size of the drum and its intended use. Figures 17-20 show some of the arrangements and wheel positions that can be used.

In the support system of Fig. 17, seven single wheels or seven twin wheels are used side by side as the main support structure of the drum fO. The side wheels 161 are positioned higher on the chain and prevent the chain joints from rubbing against the drum.

The wheels I65 are evenly spaced on the chain shown in Figure 18 to support the drum 70.

Fig. 19 shows a drum 70 supported by a chain having eleven wheels 166 at regular intervals on the chain and wheels 167 positioned along the equator of the drum. The ends 168 and 169 of the chain are connected to the support beam 170.

The support system of Figure 20 could be used for heavy drums handling heavy loads. This support system is such that the lower center wheel 171 is the largest and the adjacent wheels 172 are slightly smaller. Wheels 175 are smaller than wheels 172 and wheels 174 are smaller than wheels 173 *

The support systems of the lime drum described above operate without the ket-jun joints rubbing against the drum or against the wheel chutes of the drum.

Or at least two separate, U-shaped chain slots are used to support the drum, more slots can be used to support the long drum, even a drum that is not precisely dimensioned longitudinally or circularly, because the chains and their support means have developed an self-adjusting feature that automatically achieves adaptation to the size of the drum, especially when at least one end of the slot of each chain is supported by springs or a hydraulic support which balances the load on each chain as the drum rotates.

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The wheels are usually placed on chains so that the axis of the drum is parallel to the axles of the wheels. However, it is sometimes advisable to position the drum so that its axis is not parallel to the axles of the wheels, e.g. when it is desirable to tilt the drum to the position shown in Fig. 5, e.g. Logs peeled from the drum need to be quickly removed from the drum in some pulp mills where there is a shift from softwood processing to hardwood processing during mill operations.

The axles or pins connecting the chain joint and the installation of the wheel axles in the chain joints can be provided with sufficient clearance to allow automatic adaptation to the size variations that may occur between the wheels and the drum and also to the interlocking surfaces of the wheels and drum tracks. In this case, the wheel axles can move from their normal position, where they are parallel to the axis of the drum.

The bump and wheel tracks are usually made of metal. It is recommended to make them of metal and preferably steel. However, if desired, other materials can be used for the drum, tracks and wheels.

The device developed in the present invention is particularly useful in peeling logs which are made into wood pulp. For this reason, the logs 190 are shown scrolling in the drum shown in Figure 2. A rotating drum can also be used to mix and agitate substances.

The foregoing detailed description is intended only to facilitate an understanding of the invention and is not to limit the invention unnecessarily, as modifications will be apparent to those skilled in the art.

Embodiments for which exclusivity is claimed are defined below.

Claims (18)

Claims 6271 A device comprising a horizontally arranged rotatable cylindrical drum for handling solid, especially heavy materials, the device having two separate round tracks (yo, 90A; 125, 126; 130; 135¾ 138; ll + 7) arranged around the jacket collar of the drum (70), and two separate stationary chains (60,6l; l) * 0) supporting the drum in a forceful manner when the chains are tensioned, each chain having two ends each connected to a support means (25); 35, 1 * 5, 55, 170), characterized in that the device has a plurality of wheels (85, 86; 85A, 86A; 85A; 85B, 86B; 127, 128; 131, 132; 136; 1U5; 156; 161; 165; 166, 167; 171-17¾) mounted on rotatable separate axles (81 ·, lUl +, 155) supported by each chain, the wheels being mounted so as to be in rotational contact with the other track and thus support the drum (70) from being rotatable, whereby the drum a the shaft is substantially parallel to the axles of the wheels and the chains and associated wheels transmit the weight support of the drum rotated by the drive (99) known per se to the means (25,35,1 * 5,55,170). Device according to claim 1, characterized in that at least the support means comprise means (62,61; 65,67) for adjusting the effective length of the chain (60,6l; 11 + 0) supporting the drum (70). Device according to claim 1, characterized in that at least some of the support means comprise a flexible medium (63, 66) which receives the pulling forces on the chain. * 1. Device according to Claims 1 to 3, characterized in that the flexible medium is rubber. Device according to claim 1, characterized in that at least some of the support means comprise means (105, 106, 115) operating under the pressure of the fluid to receive traction forces on the chain. Device according to Claim 5, characterized in that the means operated by the flowing pressure is a compressed air means. Device according to Claim 5, characterized in that the fluid-operated means is a hydraulic means. Device according to Claim 1, characterized in that the chains are made of joints (80, 8l; IU1, 11 * 2; 150, 151), that adjacent joints are connected to one another via a shaft (81+, IUU, 155) and that at least some of the wheels (85, 86; 85A, 86A, 85B, 86B; 1, 5, 156) are arranged on such axles, the wheels being positioned so as to support the drum (70) as it rotates so that it rotates in the opposite direction to the wheels. 6271 8 10 Device according to Claim 8, characterized in that a considerable number of axles (81) support two wheels and that the ends of the joints (30, 81) which are connected to one another by means of an axle are connected to one another by two wheels (85, 86; 85A). 86A, 85B, 86B). Device according to claim 8, characterized in that some joints (81; lii, 112; 150, 151) consist of two joint plates (82, 83; 113, 116; 152, 15I +) and some such joints (1U1, lt2; 150 , 151) have wheels mounted on the axle between the articulation plates. Device according to Claim 9 or 10, characterized in that the wheels are arranged to roll on a track mounted on a drum (90, 90A; 125, 126; 130; 135; 138; 1U7) - Device according to Claim 11, characterized in that the track is formed by a single metal ring (90, 90A; 130; 135; 138; 1I7). Device according to Claim 11, characterized in that the track is formed by a pair of metal rings (125, 126). il. Device according to claim 1, characterized in that the two ends of each chain (60, 61; 1Uo) are connected to the support means (25, 35, 15 »55, 170) so as to form a substantially U-shaped slot from which the drum (70) is suspended, while at the same time the chains are separated from each other and that each chain has a plurality of wheels rotatably mounted on separate axles supported by each chain. Device according to Claim 1U, characterized in that the axis of the drum (70) is parallel to the axles of the wheels. Device according to Claim 11, characterized in that the axles of the wheels are not parallel to the axis of the drum. Device according to claim 11, characterized in that the chain (60, 61; pleasure) is made of joints (80, 81; to, 1U2; 150, 151) and the joints are kept out of contact with the drum. Device according to Claim 11, characterized in that the chains (60, 61; skin) are made of joints and the joints are connected with sufficient clearance to allow variations in size between the wheels and the drum. Device according to claim 11, characterized in that the other end of the at least one chain is adjustable relative to the support means for changing the height of the slot of the U-shaped chain. 11 Patentkrav 6271 8