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BR-102024018154-A2 - LEVER DEVICE FOR SAFETY LOCK

BR102024018154A2BR 102024018154 A2BR102024018154 A2BR 102024018154A2BR-102024018154-A2

Abstract

The present invention relates to a safety locking lever device (001) comprising first, second and third lever arms (110, 120, 130), a connecting arm (140), first and second crank assemblies (210, 220), a trigger (400) and a ratchet (500), wherein the connecting arm (140) is pivotally associated by a lower end to a first end of the first arm (110), pivotally associated by an upper end to a first end of the second arm (120), and pivotally associated by an intermediate portion to a first end of the third arm (130), wherein the first arm (110) has a second end pivotally associated with the first crank assembly (210), the second arm (120) has a second end pivotally associated with the second crank assembly (220) and the third arm (130) has a second end pivotally associated with the trigger (400), said trigger (400) configured to lock or release the ratchet (500).

Inventors

  • EDUARDO RODRIGUES XAVIER

Assignees

  • GREENBRIER MAXION - EQUIPAMENTOS E SERVIÇOS FERROVIÁRIOS S. A

Dates

Publication Date
20260317
Application Date
20240903

Claims (7)

  1. 1. Safety locking lever device (001), characterized in that it comprises a first, second and third lever arms (110, 120, 130), a connecting arm (140), a first and a second crank assemblies (210, 220), a trigger (400) and a ratchet (500), wherein the connecting arm (140) is pivotally associated by a lower end to a first end of the first arm (110), pivotally associated by an upper end to a first end of the second arm (120), and pivotally associated by an intermediate portion to a first end of the third arm (130), wherein the first arm (110) has a second end pivotally associated with the first crank assembly (210), the second arm (120) has a second end pivotally associated with the second crank assembly (220) and the third arm (130) has a second end pivotally associated to the trigger (400), said trigger (400) configured to lock or release the ratchet (500).
  2. 2. Safety locking lever device (001) according to claim 1, characterized in that the first and second crank assemblies (210, 220) comprise a crank arm (211, 221) having a first end pivotally associated with the first (110) or second (120) rod and a second end associated with a crank shaft (212, 222), each crank assembly (210, 220) being enclosed by a crank housing (231, 232).
  3. 3. Safety locking lever device (001), according to claim 1, characterized in that it comprises a first crank shaft (212) and a second crank shaft (222), each having a slot (311, 312) for inserting a lever key (301, 302).
  4. 4. Safety locking lever device (001), according to claim 3, characterized in that the lever keys (301, 302) each comprise a metal bar where one of its ends is provided with a profile corresponding to the geometry of the slot (311, 312).
  5. 5. Safety locking lever device (001), according to any of the preceding claims, characterized in that the first (110) and second (120) rods each comprise a metal bar with a first end (111, 121) having a pivoting connection point and a second end (112, 122) having a connecting element (1120, 1220).
  6. 6. Safety locking lever device (001), according to any of the preceding claims, characterized in that the connecting elements (1120, 1220) each comprise a thin metal plate provided with a linear slot.
  7. 7. Safety latch lever device (001), according to any of the preceding claims, characterized in that the connecting elements (1120, 1220) engage with the ends of the connecting arm (140) in a sliding manner, with the first connecting element (1120) engaging the connecting arm (140) only when the first rod (110) is actuated and with the second connecting element (1220) engaging the connecting arm (140) only when the second rod (120) is actuated.

Description

[001] The present invention relates to a safety locking device operated by means of levers that operate independently with the aid of a key. Description of the State of the Art [002] In the technological context of freight railcars, it is necessary to ensure the effective locking of the discharge doors to prevent said doors from opening during the operation of the railcar, whether accidentally due to operator negligence or the weight of the transported material, or by the action of unauthorized third parties. [003] Traditional locking devices as described in BR102020002959-2 provide solutions to prevent accidental opening, and a ratchet and trigger assembly is used for this purpose, with the trigger being activated to release the doors by means of rods positioned on the sides of the wagon. [004] The aforementioned actuation rods are exposed, allowing the operator to manipulate them, but are also subject to accidental actuation or actuation by malicious third parties. [005] In this way, the present invention proposes a new solution for the operation of the safety lock lever device, in which the device is not exposed and requires a key for its activation, avoiding accidents and/or acts of vandalism. Objectives of the Invention [006] A primary objective of the present invention is to provide a lever device for independent actuation of safety locks. [007] A second objective of the present invention is to provide a means of operation in which the actuating device is not exposed and which does not require a standard key. Brief Description of the Invention [008] The present invention relates to a safety locking lever device, comprising a first, second and third lever arms, a connecting arm, a first and second crank assemblies, a trigger and a ratchet, wherein the connecting arm is pivotally associated by a lower end to a first end of the first arm, pivotally associated by an upper end to a first end of the second arm, and pivotally associated by an intermediate portion to a first end of the third arm, wherein the first arm has a second end pivotally associated with the first crank assembly, the second arm has a second end pivotally associated with the second crank assembly and the third arm has a second end pivotally associated with the trigger, said trigger configured to lock or release the ratchet. [009] In one embodiment, the first and second crank assemblies comprise a crank arm having a first end pivotally associated with the first or second rod and a second end associated with a crankshaft, each crank assembly being enclosed by a crank housing. [0010] In another embodiment, the safety locking lever device comprises a first crank shaft and a second crank shaft, each equipped with a slot for inserting a lever key. [0011] In another embodiment, the lever keys each comprise a metal bar, one end of which is provided with a profile corresponding to the geometry of the slot. [0012] In another embodiment, the first and second rods each comprise a metal bar with a first end having a pivoting connection point and a second end having a connecting element. [0013] In another embodiment, the connecting elements each comprise a thin metal plate with a linear slot that occupies more than half of its length. [0014] In another embodiment, the connecting elements are associated with the ends of the connecting arm in a sliding manner, with the first connecting element engaging the connecting arm only when the first rod is actuated and with the second connecting element engaging the connecting arm only when the second rod is actuated. Brief Description of the Drawings [0015] The present invention will now be described in more detail based on an exemplary embodiment shown in the drawings. The figures show: Figure 1 - is a perspective view of the safety lock lever device, in a preferred embodiment; Figure 2A - is a front cutaway view of the crank assembly and lever rods, in a preferred embodiment; Figure 2B - is a rear cutaway view of the crank assembly and lever rods, in a preferred embodiment; Figure 3A - is a front cutaway view of the locked safety lock lever device, in a preferred embodiment; Figure 3B - is a front cutaway view of the safety lock lever device actuated by the first crank assembly, in a preferred embodiment; Figure 3C - is a front cutaway view of the safety lock lever device actuated by the second crank assembly, in a preferred embodiment; Figure 4 - is a perspective view of the crank assembly with the crank key inserted, in a preferred embodiment; Figure 5 - is a perspective view of the crank assembly without the crank key, in a preferred embodiment; Figure 6A - Figure 67 - is a perspective view of the crank assembly without the housing, in a preferred embodiment; and Figure 68 - is a perspective view of the crank assembly without the housing, in a preferred embodiment. Detailed Description of the Figures [0016] First, it should be noted that the term "preferred" used here refers to a particular efficient embod