The WPZQ-14/420L coal mine pneumatic roadway repair machine is independently researched, developed, and manufactured by our company based on the advantages of similar domestic products. The excavation function of rock bottom, bulging, and side ditch. Realize mechanized construction of expanding, lifting, and bottoming, with a working arm that can rotate 360 degrees and equipped with a breaking hammer and bucket quick release device, which can achieve functional conversion in a short period of time underground.

The machine has a compact structure, small external dimensions, and uses a pneumatic hydraulic system as the power source, which has the characteristics of energy conservation, intrinsic safety, and high efficiency. The chassis design utilizes the excavator's structural form and uses hydraulic motors to drive the tracks, which can adapt to complex underground environments.

Compared with similar electric tunnel repair machines, it has the following outstanding characteristics:

1. The repair machine adopts a pneumatic hydraulic system as the power source, which has strong overload capacity, can adapt to work with large impact and load changes, and is easy to adjust the output force and working speed.

2. This pneumatic design is suitable for environments with high temperature, high dust, and high humidity, and has the ability to prevent fire, explosion, and moisture. Effectively reducing the risk of fire and explosion, with good safety, ensuring the safety of miners' lives.

2. The machine has a compact mechanism, small external dimensions, and a small turning distance. The working device can be retracted into the contour of the bottom plate when going down the well, making it easy to vertically go down and up the well. More suitable for working in narrow underground spaces.

3. The working environment underground in coal mines is harsh, and the pneumatic design and operation will not generate heat and exhaust gas, which will not cause further pollution to the environment. It can adapt to extreme environmental requirements and maintain stable working performance.

4. The pneumatic design has a simple structure and low maintenance costs. Capable of quick and easy maintenance and repair to ensure the normal operation of equipment.

5. Pneumatic design reduces energy conversion losses, achieves high utilization efficiency, and lowers energy consumption. Reduce underground resource waste and achieve green and sustainable production.