The straight breaker with a drill rod diameter of 40mm is a small and medium-sized hydraulic breaker with the following characteristics:
Compact size: suitable for narrow space operations (such as indoor demolition and pipeline trench excavation).
Moderate impact force: The energy of a single blow is about 100-300 joules, suitable for breaking medium-hard concrete, bricks, small rocks, etc.
Flexible connection method: It can be adapted to 1-5 ton excavators or loaders, driven by a hydraulic system, and easy to operate.
a.Building demolition projects
Partial crushing of old houses, walls, and floors (such as enlarging door and window openings and demolishing non-load-bearing walls).
Concrete structure reconstruction (such as crushing operations during the expansion of elevator shafts and stairwells).
b.Foundation construction
Excavation of municipal pipeline trenches (such as breaking the road surface before laying water supply and drainage and cable pipelines).
Small foundation treatment (such as breaking the original concrete cushion layer and breaking the weak rock layer to replace the foundation)
c.Decoration and repair projects
Chiseling of floors and walls during interior decoration (such as removal of tiles and leveling layers).
Repair of local defects in bridges and tunnels (such as roughening of concrete spalling).
d.Road maintenance
Repair of local damage to asphalt pavement (breaking up old pavement for re-paving).
Reconstruction and breaking up of sidewalks and non-motorized vehicle lanes.
Advantages:
Efficient and flexible: Compared with manual crushing, the efficiency is increased by 5-10 times, and different crushing requirements can be met by replacing the drill rod (such as conical type, flat type).
Low vibration and low noise: The straight structure design reduces recoil vibration and is suitable for urban operations with high requirements for the surrounding environment (such as near residential areas and areas with dense underground pipelines).
Controllable cost: The rental cost of small and medium-sized equipment is low, suitable for small and medium-sized projects or short-term operations.
Notes:
Equipment matching: Choose the appropriate breaker model according to the tonnage of the excavator to avoid damage to the equipment due to insufficient pressure or overload of the hydraulic system.
Safe operation: Wear protective equipment (safety helmet, goggles, earplugs) during operation and keep a distance between people (≥5 meters).
Avoid long-term empty hitting to prevent the drill rod from breaking or overheating of the hydraulic system.
Environmental management: Crushing dust needs to be controlled by sprinkling water, and construction waste should be removed in time to meet environmental protection requirements.
Maintenance: Regularly check the wear of hydraulic oil, seals and drill rods (it is recommended to replace the drill rod bushing every 200 hours) to ensure stable equipment performance
Case 1: Wall demolition in the renovation of old residential areas
Scenario: The original brick-concrete structure wall needs to be demolished to install an elevator in a residential area.
Solution: Use a 40mm breaker with a 2-ton micro excavator to break the wall layer by layer from the middle of the wall, retaining the load-bearing structure.
Effect: 150㎡ wall demolition completed within 3 days, dust control met the standards, and the impact on surrounding residents was small.
Case 2: Municipal sewage pipeline trench excavation
Scenario: DN300 sewage pipeline is laid under the city road, and the concrete pavement and clay layer need to be broken.
Solution: Use 40mm breaker to break the pavement (20cm thick C30 concrete), and cooperate with manual trench cleaning, and the daily progress can reach 50 meters.
Advantages: Compared with blasting construction, no approval is required and there is no vibration risk, which avoids damage to the original underground pipelines.
| Comparison Dimensions | 40mm straight breaker | Manual crushing (pneumatic pick) | Large breaker hammer (≥100mm) |
| efficiency | High (10-20㎡/hour) | Low (1-3㎡/hour) | Very high (more than 50㎡/hour) |
| efficiency | Narrow (such as indoors, trenches) | Any | Open space |
| Cost (yuan/day) | 800-1500(Including equipment) | 300-600(Manual) | 3000-5000 |
| Vibration / Noise Impact | Low | Middle | High |
Conclusion: 40mm breaker is irreplaceable in small and medium-sized projects and environmentally sensitive areas, while larger-sized equipment is required for large projects or hard rock crushing.
Trend: With the increase in urban renewal projects, the demand for small and intelligent crushing equipment has increased. Some models have been equipped with pressure sensors and intelligent control systems, which can automatically adjust the striking frequency to optimize efficiency.
Selection Recommendations:
Confirm the operating object (concrete strength, rock hardness) and space restrictions.
Give priority to factory with buffer devices to reduce equipment loss.
Check the equipment usage time (recommended ≤5000 hours) and maintenance records when renting to ensure reliability.
Through reasonable application, the 40mm straight breaker can significantly improve the efficiency and safety of crushing operations in construction projects, especially suitable for refined construction needs.
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