US3556018A - Linkage operating mechanism for sliding gate - Google Patents

Linkage operating mechanism for sliding gate Download PDF

Info

Publication number
US3556018A
US3556018A US734720A US3556018DA US3556018A US 3556018 A US3556018 A US 3556018A US 734720 A US734720 A US 734720A US 3556018D A US3556018D A US 3556018DA US 3556018 A US3556018 A US 3556018A
Authority
US
United States
Prior art keywords
gate
link
shaft
pair
spaced
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US734720A
Other languages
English (en)
Inventor
Worrell M Danielson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Enterprise Railway Equipment Co
Original Assignee
Enterprise Railway Equipment Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Enterprise Railway Equipment Co filed Critical Enterprise Railway Equipment Co
Application granted granted Critical
Publication of US3556018A publication Critical patent/US3556018A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D7/00—Hopper cars
    • B61D7/14—Adaptations of hopper elements to railways
    • B61D7/16—Closure elements for discharge openings
    • B61D7/24—Opening or closing means
    • B61D7/26—Opening or closing means mechanical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D7/00—Hopper cars
    • B61D7/14—Adaptations of hopper elements to railways
    • B61D7/16—Closure elements for discharge openings
    • B61D7/20—Closure elements for discharge openings sliding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/54—Gates or closures
    • B65D90/58—Gates or closures having closure members sliding in the plane of the opening
    • B65D90/587—Gates or closures having closure members sliding in the plane of the opening having a linear motion

Definitions

  • ABSTRACT Operating mechanism for a gate slidable between closed and open positions relative to the discharge opening of a hopper outlet assembly.
  • the operating mechanism includes a rotatable shaft, and force transmitting linkage means connected between the shaft and the gate and serving to slide the gate to open position upon rotation of the shaft in one direction and to closed position upon rotation of the shaft in the other direction.
  • Reaction means is carried by the force transmitting means, and projection means rotatable with the shaft is engageable with the reaction means to initiate sliding movement of the gate toward closed position upon v rotation of the shaft in said other direction.
  • the present inivention relates generally to a hopper outlet assembly which is adapted for use, for example, in connection with railroad hopper cars. and more particularly to operating mechanism for moving a slide gate, associated with the hopper outlet assembly. between closed and open positions.”
  • force transmitting means is connected between an operating shaft and the slide gateof the hopper outlet assembly, and comprises crank arm means rotatable with the operating shaft, primary link means pivotally connectedto. the gate, and intermediate link means pivotally connected between the primary link means and the crank arm means. Uponrotation of the operating shaft in one direction, the force transmitting means serves to slide the gate.
  • the force transmitting means servesto slide the gate to closed position.
  • the primary link means is provided with abutment means, and the operating shaft is provided with projecting arm means engagcable with the abutment means.
  • first stop means which is stationarily mounted relative to the slide gate. cooperates with the primary link means to limit pivotal movement of the primary link means relative to the gate when the latter is moved towardopen position.
  • Furthermorc,.thc crank arm means. the primary link means and the intermediate link means are disposable generally in-line and over center to hold the gate in closed position.
  • the intermediate link means is provided with second stop means cooperating with the primary link means, and the crank arm means is provided with third stop means cooperating with the intermediate link means, whereby to maintainthe crank arm means and the primary and intermediate link means in overcenter relation until the operating shaft is rotated inlsaid one direction to open the gate.
  • FIG. I is a plan view of a hopper outlet assembly incorporating the slide gate operating mechanism of the present invention, with the slide gate being shown in closed position;
  • FIG. 2 is a sectional view, taken substantially along the line 2-2 in FIG. 1, looking in the direction indicated by the arrows;
  • FIG. 3 is a view similar to a portion of FIG. 2, but shows the slide gate operating mechanism as positioned when the slide gate is in a partially open position;
  • FIG. 4 is a view similar to a portion of FIG. 2, but shows the slide gate operating mechanism as positioned when the slide gate is in full open position; and I FIG. 5 is a view similar to a portion of FIG. 2. but shows the slide gate operating mechanism as positioned at the commencement of closing of the slide gate.
  • FIG. I there is indicated generally by the reference numeral a hopper outlet assembly incorporating the principles of the present invention.
  • the hopper outlet assembly 10 is adapted to be arranged at the lower .end of the hopper, for example, of a railroadhopper car which may be of either the side pocket type or the centerflow type.
  • the hopper outlet assembly 10 is comprised of agenerally rectangular main frame I2having sidewalls l4and l6 and end-walls l8 and 20. These wall members are adapted to be, suitably secured, as by welding, to the lower portion of a hopper, andserve todefine a discharge opening through, which lading can flow by gravity from the hopper.
  • I a generally rectangular main frame I2having sidewalls l4and l6 and end-walls l8 and 20.
  • the sidewalls l4 and 16 are formed with longitudinal extensions 22 and 24 which project beyond the end wall 20.
  • Secured along the sidewalls -l4 and 16 and the longitudinal extensions 22 and 24 thereof are guide tracks 26 which are inclined downwardly in the direction of the main frame 12.
  • Extending between the guide tracks 26 adjacent the lower portion of the end wall 18 isia transverse guide bar 28, and extending between the guide tracks 26 and spaced slightly below the lower edge of the end wall 20 is a transverse guide channel 30.
  • a generally rectangular slide gate 32 is arranged for sliding movement along the guide tracks 26, and, when disposed across the transverse guide bar 28. and guide channel 30. serves to close the discharge opening in the main frame 12.
  • rollers 34 may be suitably mounted at spaced locations along the upper flange of the transverse guide channel 30.
  • the operating mechanism of the present invention for effecting movement of the slide gate 32 between closed and open positions comprises a transverse operating shaft 36 rotatably journaled in bearing assemblies 38 mounted at the outer ends of the sidewall extensions 22 and 24. Connected between the operating shaft 36 and the trailing edge of the slide gate 32 is force transmitting means in the form of a pair of linkage units indicated generally by the reference numeral 40.
  • Each linkage unit 40 comprises a pair of laterally spaced arm members 42 secured on the operating shaft 36 for rotation therewith.
  • the arm members 42 have crank arm portions 44 extending radially in one direction, and projecting arm portions 46 extending radially in the other direction.
  • Each arm portion 46 presents an arcuate cam edge surface 48.
  • Each linkageunit 40 further comprises mounting means in the form of a pair of laterally spaced lug members 50 secured to the trailing edge of the slide gate 32.
  • a primary link member 52 is pivotally connected at one end,
  • a pin member 54 Secured on each side of the primary link member 52 is a reaction or lateral abutment member 56.
  • the crank arms 44 and the primary link member 52 of each linkage unit 40 are interconnected by an intermediate link member 58.
  • the link member 58 includes a body portion 60 pivotally connected by a pin member 62 to the crank arms 44 intermediate thereof.
  • the intermediate link member 58 also includes a pair of laterally spaced arm portions 64 which are pivotally connected by a pin member 66 to the other end of the, primary link member 52 at the opposite sides thereof.
  • first stop pin 68 is mounted in the lug members 50
  • second stop pin 70 is mounted in the intermediate link arms 64
  • third stop pin 72 is mounted in the crank arms 44.
  • the second step pins 70 cooperatively erigage the top edges of the primary link members 52, while the third stop pins 72 cooperatively engage the upper edges of the intermediate link members 58, whereby to maintain the crank arms 44, the primary link members 52 and the intermediate. link members 58 in overcenter relation until'the operating shaft 36 is rotated.
  • the operating shaft 36 When it is desired to discharge lading through the discharge opening in the main frame 12, the operating shaft 36 is rotated clockwise as viewed in FIG. 2. Such rotation of the shaft 36 effects concurrent rotation of the crank arms 44 which, in turn, pulls the intermediate link members 58, the primary link members 52 and the slide gate 32 toward the right as viewed in FIG. 2.
  • the first stop pins 68 in the lug members 50 are cooperatively engaged by the upper edges of the primary link members 52. as shown in FIG. 3. to thereby limit pivotal movement of the primary link members 52 relative to the slide gate 32.
  • the intermediate link members 58 and the primary link members 52 are drawn or folded about the operating shaft 36 and assume the position shown in H0.
  • the described linkage units 40 of the present invention provide a high mechanical advantage for breakaway of initial opening of the slide gate 32. and. as the slide gate 32 is moved toward full open position, this mechanical advantage changes in a manner allowing the slide gate to be open completely in less than one revolution of the operating shaft
  • the operating shaft 88 is rotated counterclockwise as viewed in FIG. 4.
  • the cam edge surfaces 48 of the cam arms 46 engage the abutment members 56. as shown in FIG. 5. to initiate sliding movement of the gate 32 toward closed position.
  • the cam surfaces 48 serve to effect the most efficient force action against the abutment members 56 which during the initial stage of closing serve as cam followers.
  • retaining flanges 74 are provided along the guide tracks 26 to restrain upward shifting of the slide gate 32 during movement along the guide tracks 26.
  • one end of the operating shaft 36 is provided with a conventional socket member 76 adapted to receive a removable bar which may be used for rotating the shaft 36 and moving the gate 32.
  • suitable seal means may be associated with the operating shaft 36 to prevent the latter from rotating when movement of the slide gate 32 is not desired.
  • a hopper outlet assembly including a main frame having a discharge opening through which lading is fiowable by gravity. a pair of parallel gate support rails defining the sides of said discharge opening and projecting away from said discharge opening in one direction. a generally horizontal slot defined in the end of said main frame adjacent said projecting gate support rails. and a gate slidable on said support rails and through said generally horizontal slot between closed and open positions relative to the discharge opening. and an operating shaft rotatably mounted on said gate support rails at the terminal ends thereof. improved linkage means interconnected between the gate and shaft for operating the gate comprising.
  • a pair of laterally spaced arm members secured on the operating shaft for rotation therewith and each having a crank arm portion extending radially in one direction and a cam arm portion extending radially in the other direction.
  • a pair of laterally spaced lugs mounted on the trailing edge of said gate in alignment with said pair of arm members on said operating shaft.
  • a first link pivotally connected at one end between said laterally spaced lugs.
  • a second link pivotally connected at one end between said laterally spaced crank arm portions of said spaced arm members on said operating shaft with the other end thereof being bifurcated for receiving the other end of said first link.
  • first stop pin means extending between said pair of spaced lugs and spaced above and toward said shaft relative to the pivotal connection between said lugs and said first link when said gate is fully closed.
  • second stop pin means extending between said bifurcated end portions of said second link and spaced above and away from said shaft relative to the pivotal connection between said first and second links when said gate is fully closed.
  • third stop pin means extending between said spaced crank arm portions of said arm members on said shaft and spaced above and away from said shaft relative to the pivotal connection between said second link and said arm members when said gate is fully closed. and a pair of lateral abutment members secured on opposite sides of said first link and adapted to be engaged by said cam arm portions of said arm members on said shaft during initial gate-closing rotation of said shaft.
  • said second and third stop pins being engageable with the top edges of said first and second links. respectively. when said gate is fully closed whereby to retain said linkage means in an overcenter locking condition. and said first stop pin being engageable with the top edge of said first link during opening movement of the gate to limit upward pivotal movement ofsaid first link.
  • a hopper outlet assembly including a main frame having a discharge opening through which lading is fiowable by gravity. a pair of parallel gate support rails defining the sides of said discharge opening and projecting away from said discharge opening in one direction. a generally horizontal slot defined in the end of said main frame adjacent said projecting gate support rails. and a gate slidable on said support rails and through said generally horizontal slot between closed and open positions relative to the discharge opening.
  • the improvement which comprises an operating shaft rotatably mounted on said gate support rails at the terminal ends thereof. a pair of laterally spaced arm members secured on the operating shaft for rotation therewith and each having a crank arm portion extending radially in one direction and a cam arm portion extending radially in the other direction.
  • first link pivotally connected at one end between said laterally spaced lugs.
  • second link pivotally connected at one end between said laterally spaced crank arm portions of said spaced arm members on said operating shaft with the other end thereof being bifurcated for receiving the other end of said first link.
  • first stop pin means pivotally interconnecting said bifurcated end of said second link and said other end of said first link.
  • second stop pin means extending between said bifurcated end portions of said second link and spaced above and away from said shaft relative to the pivotal connection between said first and second links when said gate is fully closed.
  • third stop pin means extending between said spaced crank arm portions of said arm members on said shaft and spaced above and away from said shaft relative to the pivotal connection between said second link and said arm members when said gate is fully closed. and a pair of lateral abutment members secured on opposite sides of said first link and adapted to be engaged by said cam arm portions of said arm members on said shaft during initial gate-closing rotation of said shaft.
  • said second and third stop pins being engageable with the top edges of said first and second links. respectively. when said gate is fully closed. and said first stop pin being engageable with the top edge of said first link during opening movement of the gate to limit upward pivotal movement of said first link.
  • a hopper outlet assembly including a main frame having a discharge opening through which lading is fiowable by gravity. a pair of parallel gate support rails defining the sides of said discharge opening and projecting away from said discharge opening in one direction. a generally horizontal slot defined in the end of said main frame adjacent said projecting gate support rails, and a gate slidable on said support rails and through said generally horizontal slot between closed and open positions relative to the discharge opening.
  • the improvement which comprises an operating shaft rotatably mounted on said gate support rails at the terminal ends thereof. a pair of laterally spaced arm members secured on the operating shaft for rotation therewith and each having a crank arm portion extending radially in one direction and a cam arm portion extending radially in the other direction.
  • first link pivotally connected at one end between said laterally spaced lugs.
  • second link pivotally connected at one end between said laterally spaced crank arm portions of said spaced arm members on said operating shaft with the other end thereof being bifurcated for receiving the other end of said first link.
  • first stop pin means pivotally interconnecting said bifurcated end of said second link and said other end of said first link.
  • second stop pin means extending between said bifurcated end portions of said second link and spaced above and away from said shaft relative to the pivotal connection between said first and second links when said gate is fully closed.
  • third stop pin means extending between said spaced crank arm portions of said arm members on said shaft and spaced above and away from said shaft relative to the pivotal connection between said second link and said arm members when said gate is fully closed, a pair of lateral abutment members secured on opposite sides of said first link and adapted to be engaged by said cam arm portions of said arm members on said shaft during initial gate-closing rotation of said shaft.
  • said second and third stop pins being engageable with the top edges of said first and second links.
  • said first stop pin being engageable with the top edge of said first link during opening movement of the gate to limit upward pivotal movement of said first link.
  • one or more rollers mounted in said one end of said main frame adjacent the lower edge of said generally horizontal slot defined therein to support and thereby facilitate sliding movement of said gate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Closures For Containers (AREA)
US734720A 1968-06-05 1968-06-05 Linkage operating mechanism for sliding gate Expired - Lifetime US3556018A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US73472068A 1968-06-05 1968-06-05

Publications (1)

Publication Number Publication Date
US3556018A true US3556018A (en) 1971-01-19

Family

ID=24952824

Family Applications (1)

Application Number Title Priority Date Filing Date
US734720A Expired - Lifetime US3556018A (en) 1968-06-05 1968-06-05 Linkage operating mechanism for sliding gate

Country Status (6)

Country Link
US (1) US3556018A (zh)
BE (1) BE727379A (zh)
DE (1) DE1903654A1 (zh)
FR (1) FR2010142A1 (zh)
GB (1) GB1227850A (zh)
NL (1) NL6900635A (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114504226A (zh) * 2022-02-23 2022-05-17 九江学院 一种艺术设计作品展示装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1204543A (en) * 1916-03-11 1916-11-14 Entpr Railway Equipment Co Dump-car-door-operating mechanism.
US1625089A (en) * 1923-11-10 1927-04-19 Rodger Ballast Car Co Dump-car-control mechanism
US3082701A (en) * 1959-03-11 1963-03-26 Entpr Railway Equipment Co Sliding hopper closure operating assembly
US3100457A (en) * 1961-03-16 1963-08-13 Entpr Railway Equipment Co Sliding closure hopper closure outlet assembly
US3241730A (en) * 1964-11-12 1966-03-22 Continental Transp Appliances Operating means for sliding gate
US3255553A (en) * 1964-05-28 1966-06-14 Entpr Railway Equipment Co Hopper discharge outlet
US3344748A (en) * 1964-03-09 1967-10-03 Continental Transp Appliances Hopper car discharge outlet assembly

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1204543A (en) * 1916-03-11 1916-11-14 Entpr Railway Equipment Co Dump-car-door-operating mechanism.
US1625089A (en) * 1923-11-10 1927-04-19 Rodger Ballast Car Co Dump-car-control mechanism
US3082701A (en) * 1959-03-11 1963-03-26 Entpr Railway Equipment Co Sliding hopper closure operating assembly
US3100457A (en) * 1961-03-16 1963-08-13 Entpr Railway Equipment Co Sliding closure hopper closure outlet assembly
US3344748A (en) * 1964-03-09 1967-10-03 Continental Transp Appliances Hopper car discharge outlet assembly
US3255553A (en) * 1964-05-28 1966-06-14 Entpr Railway Equipment Co Hopper discharge outlet
US3241730A (en) * 1964-11-12 1966-03-22 Continental Transp Appliances Operating means for sliding gate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114504226A (zh) * 2022-02-23 2022-05-17 九江学院 一种艺术设计作品展示装置

Also Published As

Publication number Publication date
FR2010142A1 (zh) 1970-02-13
BE727379A (zh) 1969-07-24
DE1903654A1 (de) 1970-08-20
NL6900635A (zh) 1969-12-09
GB1227850A (zh) 1971-04-07

Similar Documents

Publication Publication Date Title
US2386702A (en) Hopper discharge
US4253400A (en) Railway hopper car sliding gate closing mechanism
US3800711A (en) Hopper car door actuating mechanism
US3344748A (en) Hopper car discharge outlet assembly
US3183852A (en) Discharge outlet assembly for hopper car
US2155463A (en) Freight car
US3241730A (en) Operating means for sliding gate
US3556018A (en) Linkage operating mechanism for sliding gate
US3104623A (en) Railway hopper car pivoted closure latching mechanism
US3459316A (en) Means for automatically operating bottom hopper discharge doors during travel of railway cars
US3682105A (en) Automatic hopper gate lock
US2915022A (en) Hopper door operating mechanism for the discharge-outlet of railway hopper cars
US3511188A (en) Hopper outlet assembly
US3581673A (en) Screw operated linkage mechanism for slide gate
US2888884A (en) Hopper door operating mechanism
US3650221A (en) Hopper car closure actuating mechanism
US2730966A (en) Hopper door latching mechanism
US3339500A (en) Overcenter toggle latch overlapping hopper doors
US3836023A (en) Closure mechanism for bottom dump hopper car doors
US3082706A (en) Sliding hopper discharge outlet closure actuating mechanism
US3459317A (en) Operating mechanism for vehicle discharge means
US3724909A (en) Discharge arrangement for railway hopper cars
US3773194A (en) Discharge door operating mechanism
US3780672A (en) Hopper gate toggle operating mechanism
US3082705A (en) Sliding hopper discharge outlet closure actuating mechanism