TECHNICAL EXCHANGE

Ningxiang Road is becoming more and more important! See Ningxiang Construction Machinery Industry Curve Overtaking

On the banks of the Xiangjiang River, the capital of power, a "World Covenant" is ready to go. From May 12th to 15th, the much-anticipated 3rd Changsha International Construction Machinery Exhibition was held in Changsha International Convention and Exhibition Center, attracting 1500 construction machinery companies from around the world, more than 20000 products, and 35 global construction machinery 50 Strong enterprises gather in Changsha. Among them, nearly 20 construction machinery enterprises from Ningxiang, such as Sany and Xingbang Intelligence, gathered strongly to show Ningxiang's elegant demeanour to the world.

Accumulated thick into potential! See Ningxiang Construction Machinery Industry Curve Overtaking

On the banks of the Xiangjiang River, the capital of power, a "World Covenant" is ready to go. From May 12th to 15th, the much-anticipated 3rd Changsha International Construction Machinery Exhibition was held in Changsha International Convention and Exhibition Center, attracting 1500 construction machinery companies from around the world, more than 20000 products, and 35 global construction machinery 50 Strong enterprises gather in Changsha. Among them, nearly 20 construction machinery enterprises from Ningxiang, such as Sany and Xingbang Intelligence, gathered strongly to show Ningxiang's elegant demeanour to the world.

Huaming Tower Town: Hometown Traction to Welcome Business Home

"What moved me most was the importance Ningxiang attached to the development of the enterprise, especially in November 2022, when the main leaders of Ningxiang City led a team to inspect the enterprise, they attached great importance to the financing and cooperative development related issues I raised, communicated and coordinated with relevant departments many times, and followed up the progress at any time." Talking about settling in Ningxiang, Pan Zhiyong, CEO of Hunan Jinyue Machinery Equipment Co., Ltd., was full of praise.

Ningyu Viewpoint | Hunan Merchants Return to "Ning" Habitat Wutong to Recall Hometown for Development

In 2022, Hunan Province will take the initiative to "pave the way, build bridges and build platforms" for the return of Hunan businessmen, and provide sufficient "sunshine, air, soil and moisture" for those who go out to return home to start their own businesses. From January to November, Hunan businessmen in the province will return to invest in 899 newly registered enterprises, with a total capital of 421.02 billion billion yuan, accounting for 34.9 of the province's internal investment.

New Year's Grassroots | Jinyue Machinery: Ranked Top in Subdivision Fields and Will Do Our Best to Give Back to Hometown

Machine roar, welding flickering, boom waving ...... January 10, the reporter came to Huaming Tower Town West Lake Industrial Park, into the Hunan Jinyue Machinery Equipment Co., Ltd. (referred to as: Hunan Jinyue) production workshop, workers wearing work clothes, wearing masks and other protective equipment in an orderly manner, everywhere can feel a rush to strive for the first upsurge.

Patio drilling rig for underground mining

At present, the application of patio drilling rig has been quite popular, in many countries has replaced the traditional method of patio drilling and blasting. Compared with the general method of patio driving, the patio drilling rig has the advantages of construction safety, short well completion period, shortening the workload of horizontal roadway driving, smooth well wall and low noise. With the increasing perfection of large diameter and large torque patio drilling rigs of major brands, patio drilling technology is not only limited to underground mines, but also has been successfully used in horizontal drilling abroad. For example, a number of horizontal connecting tunnels between the two main tunnels in the English Channel were drilled with Rhino patio drilling rigs produced by Tamrock Company. The coal system uses drilling method to drill large coal bunkers and advance shafts for large-diameter shaft excavation. Ventilation shafts in railway tunnels and power station projects, underground warehouses drill transportation channels and shafts, etc. The use of low-rise drilling opportunities to reduce the cost of drilling rig working chamber excavation, and easy to assemble, handling, the world's underground mines (especially small and medium-sized mines) will increase the demand for such drilling rigs. With the progress of industry and the continuous innovation of technology, the scope of use of patio drilling rig is expanding, and it will certainly meet the higher requirements of people for its performance.

Common Fault Analysis and Troubleshooting Method of Anti-well Drilling Rig

① Check the steering of the motor. Check whether the filter element of the oil filter is blocked. If it is blocked, it needs to be replaced or cleaned. ③ Check whether the air in the auxiliary pump is discharged, pull out the hose at the oil outlet of the auxiliary pump, and turn the coupling by hand to discharge the air. ④ Check whether the auxiliary pump is unloaded internally, pull out the hose of the oil return port of the auxiliary pump to check the oil output. If the oil volume is too large, the auxiliary pump needs to be replaced or the oil distribution plate needs to be ground. ⑤ Check the combined operation valve, plug the unloading valve with a plug or replace a piece of valve. Check whether the relief valve spool is worn or blocked by pollutants, kerosene or gasoline can be used to clean the valve body or directly replace the new relief valve. ⑦ Check the level gauge to see if the oil tank is full.

Construction Method of Anti-shaft Drilling Rig for Ventilation Shaft

The excavation procedure of ventilation shaft is generally as follows: construction of anti-well drilling rig operation platform → construction of anti-well drilling rig foundation and circulating water tank → installation of clean water cylinder with small submersible pump as cooling circulating water for main engine → installation of anti-well drilling rig and commissioning → guide hole construction → reaming construction → removal of drilling rig → ventilation well protection construction.

Construction Procedure of Anti-well Drilling Rig

Foundation pouring (including circulating water tank in the first phase) → anti-well drilling rig mobilization and installation (including high-pressure well flushing pump), initial positioning of survey, pilot hole construction → drill bit exposed at predetermined depth (if not exposed, expansion and excavation are found) → reaming bit installation platform construction → reaming bit lifting → reaming bit installation → installation platform withdrawal → reaming bit removal → reaming bit removal → reaming bit removal → reverse well drilling rig removal.

Understanding and Application of Drilling Technology of Anti-well Drilling Rig

Chamber drilling: according to the inclination of the well and the type of drilling rig to excavate the chamber and pouring chamber floor. The floor of the chamber shall be flat. When pouring the floor, anchor bolt installation holes (secondary pouring) shall be reserved for the installation of the drilling machine. In order to discharge the rock slag discharged when the pilot hole is drilled, a 300 × 300mm (long) drainage ditch shall be poured when pouring the foundation. The ditch shall have a certain slope to facilitate slag discharge. If there is no ditch in the roadway, a water nest must be dug to install a submersible pump.