Self-locking type protecting against shock jumpiness prevention manhole cover

Self-locking type protecting against shock jumpiness prevention manhole cover

CN
  • CN 201,078,001 Y
  • Filed: 07/31/2007
  • Issued: 06/25/2008
  • Est. Priority Date: 07/31/2007
  • Status: Active Grant
First Claim
Patent Images

1. a self-locking protecting against shock prevents beating well lid, comprise walling crib and cover plate, it is characterized in that:

  • at least two positions are provided with the boss to walling crib center position projection in described walling crib, the position of corresponding walling crib boss is provided with flexible member in described cover plate bottom, flexible member and corresponding boss contact surface in opposite directions are in opposite directions V-type of summit or circular-arc on the axis direction of described walling crib, when described cover plate covers in described walling crib, the boss bottom that the outer end of flexible member is crushed on the described walling crib on the cover plate is agreed with walling crib and cover plate interlocking, and the elasticity of flexible member can be breakked away to opposite side its outer end from described boss one.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×