ARRANGEMENT FOR A ROLLER WITH A NUMBER OF FOLDING OUTER SECTIONS

Abstract: Arrangement for a roller with a number of roller sections capable of being moved between a transport position and an operating position, which roller sections are capable of being supported by a main frame (3). The invention affords the possibility of achieving by simple means the simple and effective folding down and folding up of moving roller sections forming part of a roller. Arranged in such a way as to act between the main frame (3) and each roller side section is a mechanism (2) consisting of articulated arms, which mechanism comprises a pivoting swinging arm (13, 14) situated on each side (3A, 3B) of the main frame, which arm is connected on the one hand via a hydraulic lifting jack (17, 18) to an inner side frame section (9, 10) for the purpose of causing each side frame section (9, 10) to pivot relative to the main frame (3), and is connected on the other hand via drawing devices (23, 24) to an outer side frame section (11, 12) capable of pivoting relative to said inner side frame section (9, 10) for the purpose of causing the side frame sections (9-12) to pivot relative to one another.

Description: Arrangement for a roller with a number of folding outer sections The present invention relates to an arrangement for a roller exhibiting a number of roller sections capable of moving between a transport position and an operating position, which roller sections are capable of being supported by a main frame. The principal object of the present invention is in the first place to provide an arrangement in accordance with the present invention which affords the possibility of achieving by simple means the safe and effective folding down and folding up of the various moving sections of the roller, without the risk of the ends of the outer roller sections scraping the ground during said folding movements. Said object is achieved by means of an arrangement in accordance with the present invention, which is characterized essentially in that there is arranged in such a way as to act between the main frame and each roller side section a mechanism consisting of articulated arms, which mechanism comprises a pivoting swinging arm situated on each side of the main frame, which arm is connected on the one hand via a jack to an inner side frame section for the purpose of causing each side frame section to pivot relative to the main frame, and is connected on the other hand via drawing devices to an outer side frame section capable of pivoting relative to said inner side frame section for the purpose of causing the side frame sections to pivot relative to one another. The invention is described below as a preferred illustrative embodiment, in conjunction with which reference is made to the drawings, in which ' Fig. 1 shows the roller in its fully folded position; Fig. 2 shows the roller in its fully open position; Fig. 3 shows the actual mechanism for producing folding movements for the roller sections retained in a transport position; and Fig. 4 shows a part of the mechanism retained in a partially folded-down position. A roller 1, which contains a mechanism arrangement 2 of the kind proposed in accordance with the present invention, exhibits in a previously disclosed fashion a main frame 3, which supports a fixed roller section 4, and a number of roller sections 5, 6, 7, 8 which are capable of moving between a so-called "transport position" I and an operating "position II" which sections are also capable of being supported by the main frame 3. The mechanism 2 is so arranged as to act between the main frame 3 and inner and outer side roller frame sections 9, 10 and 11, 12 intended for each moving roller section 5-8, and consists of a number of articulated arms 13 and 14 executed as swinging arms. Said articulated arms 13, 14, which are preferably double-armed, are pivotally mounted on either side 3A and 3B of the main frame, and preferably in such a way as to be capable of pivoting each about its own bearing shaft 15 and 16. Each swinging arm 13, 14 is connected on the one hand 13A and 14A to the respective inner side frame section 9 and 10 via a jack 17 and 18 for the purpose, on actuation of said lifting jacks 17 and 18, which are preferably executed as fluid-operated, and appropriately as hydraulically-operated piston cylinders, of causing said side frame sections 9-10 to pivot about pivoting bearing shafts 19 and 20 connected to the main frame 3. On the other hand 13B and 14B each swinging arm 13, 14 is connected to each outer side frame section 11, 12, which are preferably capable of pivoting about a pivoting shaft 21 and 22 situated between the inner and outer side frame section 9, 11 and 10, 12, via a drawing device 23 and 24 preferably executed as a cable or similar, the purpose of which is to enable the respective side frame sections 9, 11 and 10, 12 to be caused to pivot relative to one another. Said cables, etc., 23, 24 are each routed over their own deflector 25, 26 situated between the inner and the outer side frame sections 9, 11 and 10, 12 respectively and executed appropriately as a curved and preferably sector-shaped, grooved cable guide. The mechanism 2 also includes push-rods 27, 28, in conjunction with which that end 13B, 14B of the respective swinging arms to which said cables, etc., 23, 24 are connected, is connected to a push-rod 27, 28 via, for example, a pivoting link, etc., 29, 30, which is appropriately guided by a preferably tubular rod guide 31, 32 connected to the main frame 3. Said push-rods 27, 28 are capable of being actuated via a stop 33 and 34 situated at the free end 27A, 28A of each rod by inner side frame sections 9, 10 situated on the opposite side of the respective associated swinging arms 13, 14. Said stops 33, 34 may suitably take the form of screw or nut devices capable of moving in the longitudinal sense of the respective rod, which devices, as they are displaced along the associated rod 27, 28, permit the effective length of the rod to be increased or reduced for the purpose of adjusting the degree of pivoting of said interacting side frame section 9 and 10. Said stops 33, 34 can be so arranged as to interact with the contact surface 35 and 36 situated on the respective inner side frame section 9, 10. The lifting jacks 17, 18 and the drawing devices 23, 24, which together with the associated swinging arm 13, 14 and side frame sections 9-12 each form their own loop, are so executed that the side frame sections 9-12, when they are to be folded up with their associated roller sections 5-8 from the folded-down "operating position" II of the roller, are first raised by their outer end 5A and 8A from the ground 37 along which the roller 1 is working before the side frame sections 9-12 are folded up with the associated roller sections 5-8. In this case the drawing devices 23, 24 may exhibit, for example in the area of the connections 38, 39 between the drawing device 23, 24 and the inner side frame section 9, 10, a turnbuckle 40, 41 or some other tensioning device with the help of which the effective length of the drawing devices can be varied as required. The roller 1 is so arranged as to be capable of being raised for transport by means of folding wheels 42, 43 which are actuated by a hydraulic cylinder, etc., 44 and is also so arranged that the pull on the associated drawbar 45 can be varied with the help of an additionally provided hydraulic cylinder, etc., 46. The function of the roller arrangement described above should have become apparent from the above description, although it may briefly be stated that, when the roller frame sections 9-12 and their associated roller sections 5-8 are to be folded down, these are caused to pivot simultaneously about appropriate pivot bearings 19, 20 and 21, 22 by extending the lifting jacks 17, 18 with the outer ends 5A, 8A raised so that they are removed from contact with the ground 37, prior to being lowered fully to the ground during the final phase of the folding-down operation, in which position the swinging arms are pivoted outwards into their end position until contact occurs with stops 47, 48. When the roller 1 is to be folded up, the outer ends 5A, 8A of the roller sections 5, 8 are first raised in the manner described above by causing the lifting jacks 17, 18 to contract, utilizing the effect of the drawing elements 23, 24, whereupon all the moving frame sections 9-12 are pivoted together. After having reached the position of the frame sections 9, 10 illustrated in Fig. 4, these will actuate a push-road 27, 28 connected to each of the corresponding opposite swinging arm 13, 14, so that the swinging arms 13, 14 are caused to pivot over distinctly to the end position illustrated in Fig. 3, whereupon the frame sections 9-12 are pivoted together further into the position I illustrated in Fig. 1. The invention is not restricted to the illustrative embodiment described above and portrayed in the drawings, but may be modified within the scope of the Patent Claims without departing from the idea of invention.

Claims: Patent Claims 1. Arrangement for a roller (1) exhibiting a number of roller sections (5-8) capable of moving between a transport position (I) and an operating position (II), which roller sections (5-8) are capable of being supported by a main frame (3), c h a r a c t e r i zed in that there is arranged in such a way as to act between the main frame (3) and each of the roller side frame sections (9-12) a mechanism (2) consisting of articulated arms, which mechanism comprises a pivoting swinging arm (13, 14) situated on each side (3A, 3B) of the main frame, which arm is connected on the one hand via a jack (17, 18) to an inner side frame section (9, 10) for the purpose of causing each side frame section (9, 10) to pivot relative to the main frame (3), and is connected on the other hand via drawing devices (23, 24) to an outer side frame section (11, 12) capable of pivoting relative to said inner side frame section (9, 10) for the purpose of causing the side frame sections (9-12) to pivot relative to one another. 2. Arrangement according to Patent Claim 1, cha ra ct e ri zed in that the drawing device (23, 24) consists of a cable or similar which is routed over a deflector (25, 26) situated between the inner and outer side frame section (9, 11 and 10, 12). 3. Arrangement according to Patent Claim 2, c h a r a c t e r i z e d in that the deflector (25, 26) is in the form of a curved and preferably sector-shaped, grooved cable guide. 4. Arrangement according to any of the preceding Patent Claims, c h a r a c t e r i z e d in that each swinging arm (13, 14) is double-armed. 5. Arrangement according to Patent Claim 4, c h a r a ct e r i zed in that the end (13B, 14B) of each swinging arm (13, 14) to which the drawing device (23, 24) is connected is itself connected to a push-rod (27, 28) which is capable of being actuated by the inner side frame section (9, 10) situated on the opposite side. 6. Arrangement according to any of the preceding Patent Claims, c h a r a c t e r i z e d in that the hydraulic lifting jacks (17, 18) and the drawing devices (23, 24) are so executed that the side frame sections (9-12), when they are to be folded up with their associated roller sections (5-8), are first raised by their outer end from the ground (37) before being folded up.

Inventors: LILJA INGEMAR, LILJA, INGEMAR
Applicants: RANFLO FOERSAELJNINGS AB
Application year: 1986
Main classification: A01B73
IPC codes: A01B29, A01B73