When an excavator is engaged in crushing operations, it needs to be equipped with the following special devices:

Crusher hammer:

Working principle: It is powered by the pressure oil provided by the excavator's pump station. The hydraulic oil and the expansion of the compressed nitrogen at the rear push the piston to work, making the piston impact the drill rod at high speed, thereby crushing hard objects such as rocks and concrete.

Types: According to the shape, it can be divided into triangular and tower-shaped; according to the working principle, it can be divided into piston-type crusher hammers (including full hydraulic type, hydraulic-pneumatic combined type and nitrogen explosion type) and high-frequency crusher hammers; according to the structure of the distribution valve, it can be divided into built-in valve type and external valve type.

Application scenarios: It is widely used in crushing operations in fields such as mining, metallurgy, railways, highways, municipal gardens, and construction, such as mountain opening, tunnel excavation, concrete crushing, and old building demolition.

Crushing clamp:

Structure and working principle: It is mainly composed of a clamp body, a hydraulic cylinder, a movable jaw and a fixed jaw. The external hydraulic system provides oil pressure for the hydraulic cylinder, making the movable jaw and the fixed jaw open and close alternately. Objects are crushed by the jaw teeth, blades, etc. installed on the clamp body. Some models are also equipped with a steel bar cutter, which can cut off steel bars while crushing concrete.

Advantages: It has strong versatility and can be adapted to various brands and models of excavators; it is easy to operate, and only one excavator operator is needed to complete the operation; it is safe and reliable, and the operator does not need to directly contact the construction area; it is environmentally friendly and low-noise, driven by full hydraulic pressure, with low noise and less dust.

Scope of application: It is often used in the demolition industry, which can directly demolish buildings such as buildings and houses, quickly separate reinforced concrete, recycle steel bars and crush concrete. It is also suitable for crushing concrete obstacles encountered in municipal engineering such as underground pipeline laying and cable trench excavation.

Hydraulic shear:

Structural features: The whole is made of high-strength wear-resistant plates. The two shear plates are equipped with a synchronization device to achieve synchronous opening and closing. The blades are made of high-toughness and high-strength steel. Some hydraulic shears can rotate 360 degrees hydraulically and are also equipped with a special speed-increasing valve to improve working speed.

Application fields: It is mainly used in the scrap steel industry, and can penetrate complex metal structures with huge shearing force, such as shearing and dismantling H and I steel structures, etc. It can also be used for steel structure breaking, scrap steel processing, and dismantling of vehicles and other means of transportation.

Quick change connector:

Types and features: It is divided into mechanical quick change connectors and hydraulic quick change connectors. The mechanical quick change connector can be used without modifying the excavator's pipeline and hydraulic system, and the cost is low; the hydraulic quick change connector needs to modify the excavator's pipeline and hydraulic system, but can realize automatic replacement of working devices.

Function: After being equipped with a quick change connector, the excavator can quickly connect various special working devices, such as crusher hammers, buckets, rippers, grab buckets, etc., which greatly improves the working efficiency and adaptability of the excavator in different crushing operation scenarios.