A coal mine tunnel repair machine that integrates breaking and digging: the “repair guardian” of coal mine tunnels（haoyun）

The editor of Shandong Haoyun Heavy Industry Machinery Co., Ltd. has developed a coal mine tunnel repair machine that integrates breaking and excavation. The “repair guardian” of coal mine tunnels is as follows.

In the process of coal mine production, tunnels are prone to deformation, damage and other problems due to long-term exposure to ground pressure, mining activities and other factors, which seriously threaten the safety production of coal mines. Haoyun Heavy Industry’s coal mine roadway repair machine, which integrates breaking and excavation, has emerged as a key equipment to ensure the safety and normal use of tunnels.

1、 Equipment Overview

This type of roadway repair machine is a comprehensive mechanical equipment designed specifically for coal mine roadway repair operations, which innovatively integrates crushing and excavation functions into one. Through a powerful power system and advanced working devices, damaged tunnels can be quickly and efficiently repaired, restoring the original cross-sectional shape and support strength of the tunnels, ensuring the normal operation of coal mine transportation, ventilation and other systems.

2、 Structural composition

1. Chassis system: Usually adopts a tracked chassis, which has good stability and passability, and can adapt to the complex terrain conditions underground in coal mines. The tracked chassis provides strong adhesion, ensuring that the equipment will not slide or flip due to ground undulations or uneven forces during operation, laying the foundation for the safe and stable operation of the equipment.
2. Power system: Generally equipped with high-power diesel engines or electric motors, providing sufficient power for various working components of the equipment. The engine or electric motor transmits power to the hydraulic pump through the transmission system, and then the hydraulic pump generates high-pressure oil to drive the hydraulic cylinder and hydraulic motor and other actuating components, achieving various actions of the equipment.
3. Excavation working device: This is the core part of the tunnel repair machine, consisting of a crushing head and an excavation bucket. The crushing head is made of high-strength wear-resistant materials and is driven by a hydraulic motor to rotate at high speed, generating strong impact force and effectively crushing obstacles such as rocks and concrete in the tunnel. The digging bucket is used to excavate loose coal gangue and clean up crushed materials. Its structural design is reasonable, and the bucket capacity is moderate, which can ensure excavation efficiency and facilitate operation.
4. Hydraulic control system: responsible for precise control of the actions of various working components of the equipment. It consists of various control valves, oil pipes, filters, etc., and can flexibly adjust the flow direction, pressure, and flow rate of hydraulic oil according to the instructions of the operator, achieving precise movements of the crushing head and excavation bucket, as well as the walking, steering, and other operations of the chassis. The advanced hydraulic control system also has overload protection function. When the working device encounters excessive resistance, it can automatically adjust the pressure to prevent equipment damage.

3、 Working principle

After the tunnel repair machine arrives at the work site, the operator first adjusts the position and posture of the equipment based on the damage and repair requirements of the tunnel. During the crushing process, operators can adjust the speed and pressure of the crushing head according to the hardness and crushing effect of the rock.

After the crushing work is completed, switch to excavation mode and use hydraulic cylinders to drive the excavation bucket to scoop up the crushed material and load it onto the transport vehicle. During the excavation process, operators can flexibly control the lifting, flipping, and other actions of the bucket to ensure efficient loading of materials.

During the entire excavation process, the operation control system monitors the real-time operation status of the equipment. Once abnormal situations occur, such as high oil temperature or excessive pressure, it will promptly issue an alarm and take corresponding protective measures to ensure the safe operation of the equipment.

4、 Performance advantages

1. High level of functional integration: Integrating the functions of breaking and excavating, there is no need to frequently replace different equipment in the tunnel, greatly improving work efficiency, reducing equipment space occupation and transportation costs. One device can complete multiple repair tasks, simplifying the process of tunnel repair and shortening the repair time.
2. Strong excavation capability: Equipped with a high-power power system and advanced excavation equipment, it can adapt to rocks of different hardness and complex tunnel repair conditions. The design of the crushing head enables it to effectively crush high-strength rocks, and the powerful excavation force of the digging bucket can quickly clean up the crushed materials, ensuring the smooth progress of repair work.
3. Flexible and precise operation: The advanced hydraulic control system and operation control system make the operation of the equipment very flexible and precise. Operators can easily control the movement of the excavation device through the operating handle, achieving precise repair of specific parts of the tunnel. The turning radius of the equipment is small, and it can flexibly turn in narrow tunnels, adapting to the repair needs of tunnels of different shapes and sizes.
4. Good safety performance: The design fully considers the safety factors underground in coal mines. The equipment adopts explosion-proof design, which meets the safety standards of underground coal mines and effectively prevents safety accidents such as gas explosions caused by electrical equipment. At the same time, the equipment is equipped with various safety protection devices, such as overload protection, emergency braking, etc., which can take timely measures in case of equipment failure or operator misoperation to ensure the safety of equipment and personnel.

Haoyun Heavy Industry’s coal mine roadway repair machine, which integrates breaking and excavation, has become an important equipment in the field of coal mine roadway repair due to its unique functions, powerful performance, and good safety, playing an important role in the safe production and sustainable development of coal mines.