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Spanner with key and screw bolt and nut used in conjunction with it

A technique for securing bolts and nuts, used in wrenches, manufacturing tools, wrenches, etc.

Inactive Publication Date: 2002-09-11
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In existing mechanical locks, the components that realize the connection function are usually hexagonal bolts and nuts, and the wrenches used to tighten and loosen such bolts and nuts are also ordinary hexagonal wrenches (external hexagonal or inner hexagonal wrenches). This type of wrench and fasteners have extremely strong The versatility and interchangeability of this type of wrench tool and fastener have no technical difficulty and special requirements. It is more convenient to disassemble or destroy the components or equipment connected to this type of fastener, so it cannot be well passed through machinery. Ways to achieve safe fastening, confidentiality, anti-theft and other technical effects

Method used

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  • Spanner with key and screw bolt and nut used in conjunction with it
  • Spanner with key and screw bolt and nut used in conjunction with it
  • Spanner with key and screw bolt and nut used in conjunction with it

Examples

Experimental program
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Embodiment Construction

[0021] As shown in Figures 1-7: a key wrench of the present invention is used in conjunction with safety bolts or nuts 1, and its working end face is the end face of the key joint cover 3 that directly coincides with the end face of the safety bolt and nut 1 , there are 4 dense pin posts 18 at a certain angle on the end face, which can engage with the dense groove on the end face of the safety bolt or nut 1; 18 realizes the guide rod mechanism matched with the dense groove, the guide rod mechanism includes an elastic expansion sleeve 5, and its head is a concave hole with a small outer outlet and a larger inner cavity when expanded, and the end of the safety bolt or nut. Cavity matched surface body.

[0022] As shown in Figure 2: the guide rod mechanism includes a positioning sleeve 4, an elastic expansion sleeve 5, a guide sleeve 7, and a circular screw sleeve 8 which are successively installed in the inner hole of the joint surface sleeve 3; The end sleeve is set in the inn...

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PUM

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Abstract

A spanner with cipher key and the safety screw bolt and nut used in conjunction with the spanner are disclosed. The said spanner has a pitch-plane sleeve of cipher key, whose end face has a hidden pin matched with the hidden slot on the end face of the safe screw bolt or nut and a guiding rod mechanism for realizing the said matching. Its advantages are high fastening reliability and the effect on preventing artificial destroy.

Description

technical field [0001] The invention relates to a key wrench and safety bolts and nuts used in conjunction with it, which respectively belong to the technical fields of hand tools and mechanical fastening connections, and are especially suitable for the strict fastening and connection requirements of components, equipment, or facilities and the need to prevent accidents. It is used in the occasions of demolition and man-made damage and theft. Background technique [0002] In existing mechanical locks, the components that realize the connection function are usually hexagonal bolts and nuts, and the wrenches used to tighten and loosen such bolts and nuts are also ordinary hexagonal wrenches (external hexagonal or inner hexagonal wrenches). This type of wrench and fasteners have extremely strong The versatility and interchangeability of this type of wrench tool and fastener have no technical difficulty and special requirements. It is more convenient to...

Claims

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Application Information

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IPC IPC(8): B25B13/48
Inventor 王贤虎王华
Owner WUHAN UNIV