A special crowbar for anti-theft integrated well

By designing a special pry bar with an alternating staggered upper and lower folding structure and a combination of anti-slip protrusions, the problem of easy intrusion into the transmission components was solved, achieving stable opening of the manhole cover and improving the durability of the tool.

CN224377623UActive Publication Date: 2026-06-19SHENZHEN NAIL TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHENZHEN NAIL TECH CO LTD
Filing Date
2025-08-18
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing specialized tools have transmission components that are susceptible to jamming due to dust and silt intrusion, poor anti-slip performance, and operational safety and durability that cannot meet long-term maintenance requirements.

Method used

A special pry bar was designed, comprising a rod body, an upper folding plate, and a transmission rod. Through the alternating staggered arrangement of the upper pivot and the folding hinge, the transmission rod pushes the upper and lower folding plates to fold into a V-shaped structure. The movable block and anti-slip protrusion enhance the friction and form a stable lever effect. When not in use, the movable groove is sealed by a protective ring to prevent impurities from entering.

Benefits of technology

It achieves precise locking and stable opening of manhole covers, avoids jamming of transmission components, improves operational safety and efficiency, and maintains the protective and durable nature of the tool.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224377623U_ABST
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Abstract

The utility model belongs to the field of well lid tools, specifically discloses a special crowbar for anti -theft integrated well, including the stick body, upper folding leaf and transmission rod, the inside movable mounting of stick body has transmission rod, and the one side fixed connection of transmission rod has the protection ring, one side movable mounting of stick body has the lower folding leaf, and the bottom of lower folding leaf is provided with the lower pivot, and the top movable mounting of lower folding leaf has upper folding leaf, and the folding hinge is arranged between upper folding leaf and lower folding leaf, and the upper pivot is arranged between upper folding leaf and transmission rod, and upper folding leaf and lower folding leaf are half circular ring type, and the outside wall of upper folding leaf and lower folding leaf all is provided with antiskid boss, the utility model discloses through the upper pivot and the folding hinge misplacement setting V type clamping well lid opening, and the movable block and antiskid boss enhance friction, and the lever effect stabilizes and opens well lid and prevents skidding, and when receiving, the folding leaf inlays the stick body, and the protection ring closes the notched, prevents the impurity from entering the inside of stick body and leads to structure jam, and guarantees durability and repeated use stability.
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