Push-pull device with closed type guide rail and capable of preventing stroke excess

Push-pull device with closed type guide rail and capable of preventing stroke excess

  • CN 105,952,298 A
  • Filed: 05/17/2016
  • Published: 09/21/2016
  • Est. Priority Date: 05/17/2016
  • Status: Active Application
First Claim
Patent Images

1. null1. a push-pull device at fixed with closed guide rail and anti-overtravel,

  • Including rail guide piece (7) and the pull-push piece (9) that can be slided by push-pull effort in the guide groove of described rail guide piece (7),

    Described rail guide piece (7) includes main part (79) and is fixedly installed on the band roller box (71) at described main part (79) two ends,

    Guide groove is closed belt (8) and is held the belt wheel (711) being arranged in each described band roller box (71) respectively,

    Described guide groove close belt (8) upper portion in the upside slit (702) of described guide groove longitudinal extension thus described guide groove is closed,

    The lower portion of belt (8) longitudinal extension and be disposed through the through hole (90) at described pull-push piece (9) bottom in the underside cavity (701) of described guide groove closed by described guide groove,

    The bottom of described pull-push piece (9) is narrowed on the longitudinal direction of described rail guide piece (7) thus is formed narrowed portion,

    And the protrusion location division (98) forming the underside cavity (701) being matched with described guide groove in the cross section being orthogonal on described longitudinal direction and the neck extension portion (99) of the upside slit (702) being matched with described guide groove,

    Described protrusion location division (98) bottom face is provided with roller (101),

    Described roller (101) is provided with four and is directional wheel,

    Described roller (101) is separately positioned on the right and left of described protrusion location division (98) bottom face with each two one group,

    Described roller (101) rolls with described main part (79) interior diapire and is connected,

    Such that it is able to drive described pull-push piece (9) steadily to move,

    Reduce the mobile abrasion caused,

    Wherein,

    The upper portion of described guide groove closing belt (8) has two ends and is connected in order to fixing with respective unidirectional drive housing component (81) respectively,

    Each described unidirectional drive housing component (81) is provided with cavity (810) in order to be slidably matched with the head bulb (92) of the corresponding plunger portion (91) at the sides adjacent being arranged at described narrowed portion,

    Between the sidewall of the close described narrowed portion of the most described head bulb (92) and described unidirectional drive housing component (81) formed active force composition surface and and the sidewall away from described narrowed portion of described unidirectional drive housing component (81) between formed space,

    Thus pulled described guide groove to close belt (8) by the described active force composition surface at corresponding unidirectional drive housing component (81) place when described pull-push piece (9) is by push-pull effort effect,

    Now,

    The described plunger portion (91) at another unidirectional drive housing component (81) place is in sliding mode the most relatively,

    Compensating roller cavity (94) it is provided with in described narrowed portion,

    Slide in described compensating roller cavity (94) and be provided with degree of tightness slide block (95),

    Described degree of tightness slide block (95) is fixing with described plunger portion (91) near described plunger portion (91) side to be connected,

    Described degree of tightness slide block (95) opposite side is fixed with screw shell (97),

    Described screw shell (97) threaded engagement connects degree of tightness screw rod (980),

    Described degree of tightness screw rod (980) end is rotatably connected to degree of tightness and drives motor (96),

    Described degree of tightness slide block (95) two ends offset with described compensating roller cavity (94) inwall,

    And sliding connection,

    It is equipped with limit sensors (990) on the described narrowed portion medial wall of described compensating roller cavity (94) both sides,

    Described limit sensors (990) is touch sensor,

    Described limit sensors (990) drives motor (96) Electricity Federation with described degree of tightness,

    Send when described degree of tightness slide block (95) touches described limit sensors (990) signal and control described degree of tightness drive motor (96) stop operating.

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