916mm 50kN Large Diameter Nylon Sheave Helicopter Stringing Blocks Cable Pulling Blocks for Transmission Line Installation
SHDNZ916 Helicopter Stringing Blocks are engineered for overhead transmission line construction and helicopter-assisted conductor stringing operations.
Product Overview
SHDNZ916 Helicopter Stringing Blocks are designed for overhead transmission line construction and helicopter-assisted conductor stringing. With a 916mm large diameter nylon sheave, 50kN rated load, and single sheave structure, this cable pulling block is suitable for ACSR700-800 conductors. The nylon sheave helps reduce conductor wear during pulling, while the large wheel diameter helps reduce bending stress for safer and smoother stringing work.
Common Challenges
During helicopter stringing and overhead line installation, contractors often face:
- High conductor bending stress during pulling
- Conductor surface wear caused by unsuitable sheave material
- Difficult stringing work in long-distance or mountain areas
- Need for stable conductor guiding during helicopter-assisted installation
- Heavy-duty load requirements for large ACSR conductors
Root Causes
These issues are mainly caused by:
- Small sheave diameter increasing conductor bending stress
- Metal sheaves causing higher friction or surface wear
- Insufficient load capacity for large conductors
- Poor block structure reducing stability during helicopter stringing
- Non-customized sheave surface not matching project requirements
Our Solution
The SHDNZ916 Helicopter Stringing Block solves these problems by:
- 916mm large diameter sheave → reduces conductor bending stress
- Nylon sheave design → helps reduce cable and conductor wear
- 50kN rated load → suitable for heavy-duty transmission line projects
- Single sheave structure → easy to handle and install on site
- Rubber-lined nylon sheave customization → available for better conductor protection
Technical Specifications
| Parameter |
Value |
Engineering Meaning |
| Model |
SHDNZ916 |
Helicopter stringing block model |
| Sheave Diameter |
916 mm |
Reduces conductor bending stress |
| Rated Load |
50 kN |
Suitable for heavy-duty pulling work |
| Number of Sheaves |
1 Sheave |
For single conductor stringing |
| Suitable Conductor |
ACSR700-800 |
Suitable for large overhead conductors |
| Sheave Material |
Nylon |
Reduces cable wear and friction |
| Weight |
51 kg |
Strong structure for field use |
| Application |
Transmission Line Installation |
Used for overhead power line projects |
How It Works
The stringing block guides the conductor through the rotating nylon sheave during pulling or helicopter-assisted stringing. The 916mm large diameter wheel reduces bending stress on the conductor. The nylon sheave reduces surface friction and helps protect the conductor from wear. The 50kN load capacity provides stable support for large ACSR conductor stringing.
Applications
SHDNZ916 Helicopter Stringing Blocks are widely used in:
- Transmission line construction
- Helicopter-assisted conductor stringing
- Overhead power line installation
- Long-distance conductor pulling
- Mountain area power line projects
- ACSR700-800 conductor stringing
Selection Guide
Based on conductor size:
For ACSR700-800, SHDNZ916 with 916mm sheave is suitable.
Based on load requirement:
Choose 50kN rated load when the project involves large conductors and heavy-duty pulling.
Based on conductor protection:
Choose nylon sheave to reduce cable wear. Rubber-lined nylon sheave can be customized if higher conductor protection is required.
Based on construction method:
For helicopter stringing projects, select helicopter stringing blocks with suitable opening structure and conductor groove design.
Frequently Asked Questions
Q1: What is SHDNZ916 used for?
A: It is used for helicopter-assisted conductor stringing and overhead transmission line installation.
Q2: What conductor is SHDNZ916 suitable for?
A: It is suitable for ACSR700-800 conductors.
Q3: Why choose a 916mm large diameter sheave?
A: A larger sheave diameter helps reduce conductor bending stress and improves pulling stability.
Q4: What is the rated load of SHDNZ916?
A: The rated load is 50kN.
Q5: Can the nylon sheave be rubber lined?
A: Yes, rubber-lined nylon sheave can be customized according to project requirements.
