About Hydraulic Splitting

Learn More About Darda Hydraulic Splitters
Overview
Hydraulic splitters are versatile demolition tools that are used to remove large blocks of rock or concrete with high precision. The tools are inserted into specific size drill holes and exert a splitting force from within the material.

A complete Darda hydraulic splitter unit is made up of three components:

  • One Darda hydraulic splitting cylinders (But up to five using appropriate flowbar)
  • One Elco hydraulic power unit
  • A set of high & low pressure hydraulic hoses
Principles

Darda hydraulic splitters consist of a control valve, upper cylinder, lower cylinder shell, and a wedge set. The control valve is used to place the cylinder in forward, neutral, or reverse. The wedge set is contained within the lower cylinder shell and consists of a plug and two counter wedges. The cylinder pushes this plug between the two counter wedges, pushing them apart. The counter wedges are made prevent the tool from backing out of the hole as the plug forces them apart. The resulting splitting movement will produce up to 400 tons of force on hand-held units and 1,800 tons of force on carrier mounted units. After the rock or concrete has been fractured, a large gap will remain in the material. Excavators, backhoes, or hand tools can then be used to pull the blocks apart.

Handheld splitters are powered by Elco hydraulic power units, which are specially designed self-contained hydraulic systems that produce 7,100 PSI. These units are driven from air, electric, or gas motors. Up to five handheld splitters can be run from a single Elco power unit.

Uses

Darda hydraulic splitters are designed to be used in the mass removal of rock or concrete with the highest level of precision. Hydraulic splitters are extremely well suited and the most economical solution for a wide range of products, including:

  • Trenching through solid rock
  • Trenching through reinforced or non-reinforced concrete
  • Trenching under sensitive utilities (gas mains, water mains, etc.)
  • Rock or concrete removal from directly alongside walls and foundations
  • Rock or concrete removal from inside buildings
  • Bridge demolition
  • Wall demolition
  • Creating wall rock
  • Concrete structure modifications
  • Carving rock for foundation holes
  • Carving rock for spread footings
  • Dam removal
  • Modifications within factories and power plants (especially nuclear)
  • Secondary breaking of shot-rock
  • Underwater rock removal
  • Specialty projects, such as breaking hardened concrete from concrete drums
Benefits

Using Darda hydraulic splitters has many benefits over traditional rock and concrete breaking methods. Although the tools are not ideal in every situation (such as soft, rippable rock), their versatility makes them uniquely flexible.

Economical

Darda hydraulic splitters are often cheaper than other forms of rock or concrete removal. Hydraulic splitters can reduce costs of rock excavation by up to 300% as compared to hydraulic hammers. These same tools can also rapidly remove reinforced concrete by breaking massive blocks of material off, which can then be efficiently hauled to processing plants or safely reduced on the ground.

Although the use of hydraulic splitters is often simply faster than hydraulic hammers, the real savings of using splitters come from reducing permitting and variance requirements as well as reducing the insurance costs of an operation.

For example, many developed towns and cities prohibit all forms of blasting, and some even prohibit hydraulic hammers for the demolition of rock or concrete. Even if municipalities do not completely ban these methods, many will require special variances or excessive restrictions that prevent economical operations. With Darda hydraulic splitters, the incredibly safe operation of the tools prevents these restrictions from interfering with work, a truly unique feature of hydraulic splitters.

Many contractors who attempt to hammer or blast near sensitive infrastructure or buildings risk losing a great deal of money due to insurance claims for costly repairs. Hydraulic hammers that are effective on these projects will produce fly rock that destroys the sides of nearby buildings, including siding, windows, and expensive landscaping. Hydraulic hammers can also crack and compromise building foundations and utilities from intense vibrations and shockwaves, which leads to costly repair costs that are incurred by the contractor.

Obviously, blasting is far more unpredictable and risky than hydraulic hammers, and can cause the complete collapse of buildings.

Using Darda hydraulic splitters eliminates the detrimental effects of traditional breaking methods, and therefore eliminates the exorbitant costs of insurance and insurance claims from operation.

Safe

Darda hydraulic splitters are the safest economical method of rock or concrete demolition. Using the command valve at the top of the hydraulic splitter, the break is totally controllable. Operators can watch as the crack begins to form in the rock and, should the break be going in an undesirable or dangerous direction, can place the tool in neutral or reverse to abort the break. This feature is truly unique to the Darda hydraulic splitters.

Operators can plan and determine the break lines in the material by using the depth of the wedge set and the direction of the split. For example, splitters can be used to create perfectly formed breaks along the side of solid rock that a retaining wall is built on top of, without compromising or chipping the wall. These tools can carve vertical lines along footings and foundations, and around sensitive utilities using the unique ability to control the direction and depth of the break.

Operation of the Darda hydraulic splitters eliminates fly rock and shock waves entirely. Therefore, there is little to no risk to other jobsite activities or workers, nearby buildings or utilities, and bystanders.

Darda hydraulic splitters are truly the safest method of breaking rock and concrete.

Environmentally Friendly

Hydraulic splitting drastically reduces the emission of noise and dust when compared to traditional breaking methods. Therefore, hydraulic splitters allow demolition and excavation projects to take place in confined or sensitive areas.

Durable

Darda hydraulic splitters are extremely reliable due to their special design and the superior materials used in the components of the tool. Durable construction means more time in the field and less down time. When it comes time to service or rebuild components of the hydraulic splitters, the cost savings are unbeatable compared to impact hammers. Rebuilding all wear components of the splitter can be done in a few hours by a single technician, drastically improving the maintenance expenses incurred when using traditional breaking equipment.

Autonomy and Ease of Use

Darda handheld hydraulic splitters can be run without any heavy equipment while still delivering an incredible amount of power. This feature allows users to conduct work in previously inaccessible locations without costly site modifications. Total project costs can be drastically reduced due the autonomy of these units.

Darda hydraulic splitters are easy to use tools that take little training to operate effectively. This ease of use reduces costs associated with training and operator experience, both required for other techniques.