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悬臂式掘进机

Cantilever roadheader

Cantilever type roadheader is a combined unit capable of cutting, loading and transportation, self-propelled and spray dust removal. With the rapid development of the comprehensive coal mining mechanization in the working face, the coal mine has higher and higher requirements for the tunneling speed. In order to improve the speed of mining accurate roadway, cantilever roadheader has been vigorously developed and gradually developed.

At present, the heading technology will continue to develop in five directions: drilling and blasting rock heading, cantilever heading machines, continuous coal miners, heading and anchoring units, and full-section heading machines. In the tunneling of all-hard rock roadways, drilling and blasting rock tunneling will still be a major method for a long time, but in some important areas, full-section tunneling opportunities will gradually replace drilling and blasting rock tunneling; In the rock roadway and semi-coal rock roadway, the cantilever tunneling opportunity has been vigorously developed and gradually became the main tunneling method; in some conditions, the coal roadway with higher tunneling efficiency and continuous coal mining and anchoring combined units will be obtained Promotion and application.

Main mechanism of cantilever roadheader

The cantilever roadheader should simultaneously realize the functions of separating coal rock from the ore body, loading and transporting it, and realizing the machine's walking movement and spray dust suppression. The cantilever roadheader is mainly composed of nine parts: cutting mechanism, loading mechanism, transport mechanism, frame and turntable, walking mechanism, hydraulic system, electrical system, cooling and dust suppression system, and operation control and protection of the machine. Its overall structure is shown in the figure.

1. Cutting mechanism 2. Loading mechanism 3. Transport mechanism 4. Rack and turntable 5. Walking mechanism 6. Hydraulic system 7. Electrical system 8. Water supply system 9. Operating table

悬臂式掘进机结构图

Working characteristics of cantilever roadheader

1. The cantilever roadheader can only cut part of the cross section of the roadway. To break the rock of the whole cross section, it is necessary to continuously move the cutting head up, down, left and right to complete the work. Can be used for tunnels of any cross-section shape.
2. The driving speed is greatly affected by the utilization rate of the roadheader. Under the optimal conditions, the utilization rate can reach about 60%, but if the rock needs support or other auxiliary work cannot keep up, its utilization rate is lower.
3. It has the same advantages as full-section boring machine: continuous excavation, no blasting vibration, can more freely determine the appropriate time to support the rock; can reduce over-digging; can save the cost of rock support and lining.
4. Compared with the full-section roadheader, the cantilever roadheader is compact and has greater flexibility in the tunnel, which can be used for any type of support.
5. Compared with the full-section roadheader, it has the significant features of less investment, short construction preparation time and high reusability.
The small size of the working mechanism and the accessibility of all important parts are convenient for maintenance and support operations.

Advantages of cantilever roadheader

1》 Cantilever roadheader can ensure the stability of the surrounding rock of the roadway. Because when the roadheader digs, the surrounding rock of the roadway does not receive the blasting vibration damage, which is beneficial to the roadway support management.
2》 Cantilever type roadheader has fast driving speed and high efficiency. The average speed is increased by 1.5 to 2 times and the labor efficiency is increased by 2 to 3 times compared with the rock-blasting method. Quick digging can promptly identify the necessary coal field conditions and be ready to take over the working face on time.
3》 Reduce roadway over-digging and unnecessary workload.
4 "can improve workers 'working conditions and reduce workers' labor intensity.
5》 Reduce the dust and harmful gas pollution from driving and improve the working environment.
6》 It can reduce operating personnel and improve safety.

Classification of cantilever roadheader

There are several classification methods for cantilever roadheaders:
(1) According to the weight: there are four types of ultra-light, light, medium and heavy.
(2) According to the different cutting methods of the working mechanism, it is divided into: vertical axis roadheader and horizontal axis roadheader.

悬臂式掘进机侧面效果图

悬臂式掘进机正面效果图

Common models of cantilever roadheader

EBZ75 悬臂式掘进机
  • EBZ75 悬臂式掘进机
  • EBZ75 悬臂式掘进机
  • EBZ75 悬臂式掘进机

EBZ75 cantilever roadheader

The main features of the EBZ75 cantilever roadheader are: compact structure, short body, low center of gravity, easy operation, and stable work. The cutting head is overloaded by a motor drive. All components are reasonably designed as a combination of small components for easy underground transportation and installation. With internal spray, dustproof effect is good. The hydraulic system is simple and easy to maintain.

Scope of application:
EBZ75 cantilever roadheader is a cantilever part cross-section roadheader, suitable for roadway excavation of 6-17m² coal roadway or half-coal roadway, and can also be used in railway, highway, hydraulic engineering and other tunnels.

EBZ120 悬臂式掘进机

EBZ120 Overhead Boring Machine

Compact structure, short body, low center of gravity, easy operation, and stable work. The cutting head can choose Φ700x550 or Φ750x550. It has a good cutting speed when cutting medium-hard coal rocks. The truncated ruler has a reasonable layout, strong cutting ability, spraying inside and outside, and good dustproof effect.

Scope of application:
EBZ120 cantilever roadheader can realize continuous cutting, loading and transportation operations. The machine is suitable for roadway excavation in coal or semi-coal rock roads and soft rock roads, and can also be used in railway, highway, hydraulic engineering and other tunnel construction. The maximum positioning cutting section can reach 18.75m² and the cutting hardness is 70MPa. The required ambient temperature is 0 ~ 30 ° C, and the maximum slope is ± 18 °.

EBZ160 悬臂式掘进机

EBZ160 cantilever roadheader

Low center of gravity, good stability, simple, reliable hydraulic system, easy maintenance, strong loading and transportation capacity, low failure rate of cutting mechanism.

Scope of application:
EBZ160 cantilever roadheader can realize continuous cutting, loading and transportation operations. The machine is suitable for roadway excavation in coal or semi-coal rock roads and soft rock roads, and can also be used in railway, highway, hydraulic engineering and other tunnel construction. The maximum positioning cutting section can reach 26m2, and the cutting hardness is 80MPa. The required ambient temperature is 0 ~ 30 ° C, and the slope is ± 18 °.

EBZ200 悬臂式掘进机

EBZ200 cantilever roadheader

Low center of gravity, good stability, simple hydraulic system, high reliability, high operating efficiency, high degree of intelligence, easy maintenance, strong loading and transportation capacity, low failure rate of cutting mechanism.

Scope of application:
EBZ200 cantilever roadheader can realize continuous cutting, loading and transportation operations. This machine is suitable for roadway excavation in coal or semi-coal mine and soft rock, and can also be used in railway, highway, hydraulic engineering and other tunnel construction. The maximum positioning cutting section can reach 32m² and the cutting hardness is 80MPa. The required ambient temperature is 0 ~ 30 ° C slope ± 18 °

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