Anchoring Bolts TRIZ Cases

A recessed nut display face shields rock bolt markings from driver tool damage, preserving readable ID and traceability after installation.

A recessed nut display face keeps rock bolt ID and traceability markings readable by preventing contact damage from the driver socket.

Fine calcium carbonate in aluminous cement anchor mortar raises load values while reducing cracking, shrinkage, and binder use.

A hinged wall section and internal expander let the bolt gouge into weak strata, improving anchorage where friction and resin bonding fall short.

A spring-biased sleeve lets the dolly switch from rod-and-nut rotation to nut-only advance, speeding self-drilling rock bolt installation.

A pull-actuated abutment rotates the anchor element outward, reducing thread friction and increasing bore-hole anchoring range.

A two-mode anchor arrangement lets the rock bolt move for further expansion under seismic displacement, then lock to maintain strong anchorage.

A two-stage wedge mechanism expands the outer tube farther, improving rock bolt anchoring reliability in formations with limited expansion range.

A central rod pulls the outer body into the bore, cutting installation friction, preventing buckling, and enabling formation pre-tensioning.

A spring-biased dolly switches from rod-and-nut co-rotation to nut-only rotation, enabling faster single-stage rock bolt installation.

A staged drive and intermediate wedge mechanism expands the outer tube further, improving rock bolt anchoring range and stability in formations.

Dual cable retention holes let one expansion-leaf anchor share load across two cables, avoiding larger, harder-to-tension cables.

Friction engagement supports the rock immediately while a deeper cable bolt develops full anchorage as grout cures.

This case mixes grout near the borehole blind end to advance cable bolts and align installation with rock excavation.

This case uses continuous helical cable grooves and thixotropic injectable resin to strengthen bonding and reduce critical embedment length.

Parallel drilling and bolt feeding reduce positioning time in rock reinforcement.

A bolting head mounts drilling and bolting units in parallel to eliminate positioning movements during rock reinforcement.

A hollow rod shear connector uses repeated flow-direction changes to mix adhesives uniformly and stabilize rock strata with less oversizing.

A hollow rod anchor uses a static mixer and tuned seal bursting surface to distribute adhesive evenly with lower setting forces.

Fluid pressure drives a pressing member to extrude segmented adhesive components through a static mixer, preventing air voids and clogging in rock holes.

Inclined bearing plate anchors rock bolts to counteract dynamic wall displacement and maintain load stability.

Tubular sleeve expands elastically within drilled holes, eliminating resin injection and reducing installation time.

A rock anchor assembly uses a pre-positioned failure arrestor to engage an integral formation on the tubular member when the elongate element breaks.

Segmented conduit with mixing elements distributes viscous grout uniformly, preventing flow blockage in mine roof support systems.

Work-hardened manganese steel rock bolts absorb dynamic loads via plastic deformation, preventing failure during deep mine rock squeezing.

Frustoconical wedge ring forces split sleeve expansion against borehole walls, absorbing violent seismic loads and preventing bolt ejection.

Compressed air evacuates residual water from expandable rock anchors, preventing corrosion and extending service life.

Intermediary bush redirects installation force to protect seals, enabling high-energy axial loading without damaging the adapter.

Nested internal reinforcement protects the core from coating damage during expansion, improving corrosion resistance and tensile strength.

A friction bolt uses a split tube and restrainer to anchor into rock bores.

A resin anchored rock bolt features a positioning head with lobes and paddles to shred capsules and mix resin during insertion.

Internal segmentation creates dedicated drainage passages that eliminate retained inflation agents, preventing corrosion in underground mining anchors.

A manually bendable rebar bolt with an oval cross-section allows controlled field bending without altering bulk steel properties or requiring heating.

Radial compression of a slotted tube engages the bore hole wall, resisting axial and radial forces in rock strata.

Automated fluid injection separates resin storage from mixing, eliminating cartridge rupture risks while ensuring complete component blending.

In-hole mixing device merges separate resin feeds into one line, reducing drill hole diameter and energy consumption while minimizing waste.

Segmented hollow rock bolt combines threaded anchors with smooth shanks to absorb dilation energy while simplifying grouting through the interior.

A self-drilling rock bolt integrates an impact absorber between the body and anchor element to dampen percussive drilling forces.

Movable rollers and a bending guide automate cable insertion, reducing manual effort and ensuring complete anchor penetration in underground mining.

A flexible resin nozzle with a spring body absorbs impact forces from mesh collisions, reducing damage during mine bolting alignment.

Rotary drill rods deploy wedge-shaped expansion elements into borehole walls to secure anchoring immediately after drilling.

A differentiated anchor structure employs cemented tungsten carbide grippers to break into hard rock strata, resolving lubricant interference from cement grout.

Automated pump system delivers resin and catalyst to boreholes with precise ratio control, resolving inconsistent bonding from manual mixing.

A cable rock bolt installation machine anchors the leading end of the cable to enable full-length tension application.

Scanning data determines bolt positions for subsequent fans, reducing manual estimation errors in underground mining.

An energy-absorbing rockbolt uses grooved elliptical rods to dissipate kinetic energy through controlled sliding and plastic deformation.

High-density PVC bearing plates and fiberglass bolts anchor mine roofs while components sink in heavy media vessels to prevent preparation facility waste.

Hollow tubular rock bolt reinforced with prestressed steel strands provides high tensile strength and enhanced borehole wall bonding.

A cable bolt expander mechanism uses a conical wedge to radially expand gripper elements for secure anchoring.