US3771642A - Platform assembly for a multiple chain pair transport device - Google Patents

Platform assembly for a multiple chain pair transport device Download PDF

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Publication number
US3771642A
US3771642A US00217448A US3771642DA US3771642A US 3771642 A US3771642 A US 3771642A US 00217448 A US00217448 A US 00217448A US 3771642D A US3771642D A US 3771642DA US 3771642 A US3771642 A US 3771642A
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US
United States
Prior art keywords
members
spaced
platform
locking
pairs
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Expired - Lifetime
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US00217448A
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English (en)
Inventor
K Schatte
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LODA CORP Z
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LODA CORP Z
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G17/00—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface
    • B65G17/30—Details; Auxiliary devices
    • B65G17/38—Chains or like traction elements; Connections between traction elements and load-carriers
    • B65G17/40—Chains acting as load-carriers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G17/00—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface
    • B65G17/06—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface having a load-carrying surface formed by a series of interconnected, e.g. longitudinal, links, plates, or platforms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
    • B65G2201/02—Articles

Definitions

  • a platform for a multiple chain pair transport device includes a plurality of spaced rigid linear members coupled at their ends to selected chain pairs and a plurality of selectively flexible interconnecting members.
  • the interconnecting members are arranged in a grid pattern between the chain pairs and include spaced pairs of complementary shaped locking members.
  • the locking members comprise overlapping portions that are relatively rotatable through a predetermined arc and are supported by and spaced between the rigid linear members.
  • the overlapping portions include matching arcuate keyways and protrusions which permit the locking members to flex upwardly and to be rigidly locked in a horizontal position in response to loads bearing downwardly against the support members.
  • SHEET 1 or 2 PLATFORM ASSEMBLY FOR A MULTIPLE CHAIN PAIR TRANSPORT DEVICE BACKGROUND OF THE INVENTION This invention relates to platform assemblies and, more particularly, to platform assemblies for use in transport devices of the multiple chain pair type.
  • This unique feature of the foregoing platform assembly makes it possible to combine many lifting and transporting units into one continuous system, and combining numberous vertical and horizontal movement into one continuous flow, notwithstanding the direction of movement. Furthermore, by virtue of the multiple chain pair configuration of the transport device and the multiple platform construction of the platforms, the load carrying capability of the device is vastly improved. This improvement is due to the even distribution of the load throughout the platform.
  • a platform for use in a transport device of the multiple chain pair type includes a plurality of spaced rigid linear members coupled at their ends to selected chain pairs and a plurality of support members which span the distance between the chain pairs. Selected support members are secured to the spaced rigid linear members and supported thereby, and'the support members have double-barreled' configurations with keyways formed therein. Successive support members include overlapping portions that are hinged together by pin members which permit the support members to flex upwardly in the absence of a load bearing thereagainst and to be rigidly locked in horizontal position in response to loads bearing downwardly against the support members.
  • the foregoing type platform is extremely effective and will carry unit loads of material without limitation as to the size of the unit loads of material.
  • the number and size of the elements forming the platform can make the platforms expensive to manufacture and assemble. In some installations, the use to which the transport device is put will not justify the cost of such paltforms.
  • the platform of the present invention which comprises a first plurality of spaced rigid linear members, each member being connected at its ends to one pair of a plurality of pairs of offset and movable endless flexible support members and a plurality of selectively flexible interconnecting members.
  • the interconnecting members are arranged in a grid pattern between the chain pairs and include spaced pairs of complementary shaped locking members.
  • the locking members comprise overlapping portions that are relatively rotatable through a predetermined arc and are supported by and spaced between the rigid linear members.
  • the overlapping portions include matching arcuate keyways and protrusions which permit the locking members to flex upwardly and to be rigidly locked in a horizontal position in re sponse to loads bearing downwardly against the support members.
  • FIG. 1 is a top plan view of a platform assembly for a four chain pair transport device arranged according to the present invention
  • FIG. 2 is a sectional view of the platform assembly of the present invention taken along line 2-2 of FIG. I and looking in the direction of the arrows;
  • FIG. 3 is an enlarged fragmentary top plan view of the platform assembly of the present invention.
  • FIG. 4 is a sectional view of the platform assembly of the present invention taken along line 4-4 of FIG. 3;
  • FIG. 5 is a sectional view of the platform assembly taken along line 5--5 of FIG. 4 and looking in the direction of the arrows.
  • FIG. I there is shown a perspective view of a transport device It), with a platform assembly of the type disclosed in the U.S. Pat. No. 3,578,l45,'and comprising four pairs of chains of the type disclosed in the U.S. Pat. No. 3,358,550, which is also licensed to the assignee of the present invention.
  • the transport device 10 comprises four chain pairs 12, 14, 16 and 18 that are driven and guided in prescribed endless loops by drive and guide members (not shown), such as sprockets.
  • the chain pairs l2, 14, 16 and 18 comprise laterally spaced chains 12a, 12b; 14a, 14b; 16a, 16b; and 18a, 18b, respectively.
  • the chains 12a, b a and 12b, 18b are arranged to interlock and thereby move in the same plane and over the same sprockets. Simibetween the chain pairs 12 and I8.
  • the chain pairs 12 and 18 may be referred to as the inner chain pairs and the pairs 14 and 16 may be referred to as the outer chain pairs.
  • a platform 20 which includes four tube members 21, 22, 23 and 24 which are attached to the chains 12a, 12b; 14a, 14b; 16a, 16b; and 18a, 18b, respectively, through load carrying rollers 21a, 21b; 22a, 22b; 23a, 23b and 24a, 24b, respectively.
  • load carrying rollers 22a, 22b and 23a, 23b which affix the bars 22 and 23 to the outer chain pairs 14 and 16 are located inwardly of the chain pairs 14 and 16 to a greater extent than are the rollers 21a, 21b and 24a, 24b spaced from the chain pairs 12 and 18.
  • rollers 21a, 21b; 22a, 22b; 23a, 23 b; and 24a, 24b are adapted to travel in the guides, the guides providing support for the chain pairs 12, 14, 16 and 18 and reducing lateral vibration between the chain pairs.
  • FIGS. 1-10 there is shown in the drawings a unique and novel platform assembly 30 that is particularly adapted for a multiple chain pair transport device of the type described above and in US. Pat. No. 3,578,145. As best shown in FIGS.
  • the platform assembly 30 includes rows 32-41 of overlapping figure eight-shaped interlocking members 32a, 32b; 33a, 33b; 34a, 34b; 35a, 35b; 36a, 36b; 37a, 37b; 38a, 38b; 39a, 39b; 40a, 40b; and 41a, 41b, respectively.
  • the interlocking members overlap at opposite ends whereby the openingsin such opposite ends are aligned.
  • the aligned openings of the endmost and intermediate a and b interlocking members receive the tube members 21, -22, 23 and 24 forming the basic platform.
  • Intermediately disposed tube members 42-46, 47-51 and 52-55 span the width of the platform and extend through and support the remaining a and b interlocking members to complete the platform.
  • the two openings in each of the interlocking members include arcuate keyways 56 formed at the extreme ends thereof.
  • the keyways formed in the a interlocking members are identifled by the number 56a and the keyways formed in the b interlocking members are identified by the number 56b.
  • the two openings in each of the interlocking members include inwardly extending protrusions 58 formed in the surface of the members angularly of the keyways 56.
  • the protrusions 58 formed in the a interlocking members are identified by the number 58a and the protrusions formed in the b interlocking membets are identified by the number 58b.
  • the protrusions 58a of the a members fit into the keyways 56b of the b members and the protrusions 58b of the b members fit into the keyways 56a of the a members.
  • this arrangement will allow the a and b members to rotate relative to one another through an arc of approximately The extent of the arc is defined by the angular distance of the keyways 56.
  • the effective operation of the interlocking a and b support members is dependent upon the maintenance of an abutting relationship between the support members.
  • the a and b support members are mounted on the tubes 21-24 and 42-55, as shown, and washers 60a and 60b are pressed against the interlocking support members and then welded to the tubes.
  • the washers 60a and 60b preclude longitudinal movement by the interlocking a and b support members along the tubes and keep the protrusions of a and b members fitted into the corresponding keyways of their corresponding overlapping a and 5 members.
  • the interlocking a and b members can bend downwardly from a horizontal plane until the protrusions 58a and 58b reach the lowermost edges of the keyways 56b and 56a respectively.
  • the downward deflection by the support members is precluded by the engagement between the protrusions 58a and 58b and the uppermost edges of the keyways 56b and 56a, respectively.
  • the platform 30 is unidirectionally flexible, i.e., in the upper direction, which enables it to bend around and under sprockets, as the case may be, as the platform is conveyed between its unloading and loading positions.
  • the platform 30 is maintained flat and inflexible as the platform is conveyed from the location where unit loads of material are deposited onto the platform to the location where the unit loads of material are unloaded.
  • the tube members 21, 22, 23 and 24 carry the platform 30 and full advantage is taken of increased load carrying capability provided by the plurality of chain pairs 12, 14, 16 and 18, as described in the US. Pat. No. 3,578,145.
  • the a and b interconnecting members form a grid pattern spanning the length and width of the platform formed by the tube members.
  • the size and spacing of the a and b members can be modified to vary the grid pattern to accommodate unit loads of varying sizes.
  • the grid pattern may be opened up where the platform is to carry larger loads and closed or compressed where the platform is to carry smaller loads.
  • a platform assembly for a multiple chain pair transport device having a plurality of spaced rigid linear members coupled at their ends to selected chain pairs, the improvement comprising a plurality of selectively flexible interconnecting members arranged in a grid pattern between the chain pairs, the interconnecting members comprising spaced pairs of complementary shaped locking members arranged in abutting relationship, the locking members having overlapping portions rotatable through a predetermined arc and supported by selected ones of the rigid linear members and free end portions supported respectively by two other spaced rigid linear members, the locking members further having openings formed in the ends thereof and angularly spaced arcuate cutouts and protrusions formed therein radially outwardly of the openings, the locking members overlapping at opposite ends whereby the openings in such opposite ends are aligned and the protrusions of each locking member projecting from a plane of the locking member and being configured to fit into the cutouts of other locking members to permit relative rotational movement therebetween.
  • a platform assembly according to claim 3 further comprising groups of spaced rigid linear members mounted respectively between and coextensive with the linear members coupled at their ends to the chain pairs, and spaced rows of locking members having overlapping portions coupling the linear members together and to the linear members coupled at their ends to the chain pairs.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chain Conveyers (AREA)
  • Transmission Devices (AREA)
  • Electric Cable Arrangement Between Relatively Moving Parts (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
US00217448A 1972-01-13 1972-01-13 Platform assembly for a multiple chain pair transport device Expired - Lifetime US3771642A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US21744872A 1972-01-13 1972-01-13

Publications (1)

Publication Number Publication Date
US3771642A true US3771642A (en) 1973-11-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
US00217448A Expired - Lifetime US3771642A (en) 1972-01-13 1972-01-13 Platform assembly for a multiple chain pair transport device

Country Status (7)

Country Link
US (1) US3771642A (fr)
JP (1) JPS4881271A (fr)
BE (1) BE793935A (fr)
BR (1) BR7300230D0 (fr)
DE (1) DE2300457A1 (fr)
ES (1) ES410692A1 (fr)
FR (1) FR2173937A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060185967A1 (en) * 2005-02-24 2006-08-24 Sedlacek Kyle J Screen belt and modules
US8752698B2 (en) 2011-12-06 2014-06-17 Ashworth Bros., Inc. Conveyor belt with alignment features
US8857607B2 (en) 2011-12-06 2014-10-14 Ashworth Bros., Inc. Conveyor belt with alignment features

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4159763A (en) * 1977-08-02 1979-07-03 The Laitram Corporation Inspectable modular conveyor
BE1002743A3 (nl) * 1989-01-16 1991-05-21 Hoeberigs Johannes Henricus Ma Kompakte eindloze ketting en verkoopautomaat en transportinrichting omvattende een dergelijke eindloze ketting.

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1358494A (en) * 1920-11-09 Tractor-belt
US3184039A (en) * 1962-08-13 1965-05-18 Anchor Steel And Conveyor Comp Heavy duty vertical lift conveyor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1358494A (en) * 1920-11-09 Tractor-belt
US3184039A (en) * 1962-08-13 1965-05-18 Anchor Steel And Conveyor Comp Heavy duty vertical lift conveyor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060185967A1 (en) * 2005-02-24 2006-08-24 Sedlacek Kyle J Screen belt and modules
US7575113B2 (en) * 2005-02-24 2009-08-18 Laitram, L.L.C. Screen belt and modules
US8752698B2 (en) 2011-12-06 2014-06-17 Ashworth Bros., Inc. Conveyor belt with alignment features
US8857607B2 (en) 2011-12-06 2014-10-14 Ashworth Bros., Inc. Conveyor belt with alignment features
US9096380B2 (en) 2011-12-06 2015-08-04 Ashworth Bros., Inc. Conveyor belt with alignment features
US9522786B2 (en) 2011-12-06 2016-12-20 Ashworth Bros., Inc. Conveyor belt with alignment features

Also Published As

Publication number Publication date
BR7300230D0 (pt) 1973-09-27
DE2300457A1 (de) 1973-07-19
JPS4881271A (fr) 1973-10-31
BE793935A (fr) 1973-05-02
FR2173937A1 (fr) 1973-10-12
ES410692A1 (es) 1975-12-01

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