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Litian Heavy Industry Machinery Co., Ltd
Litian Heavy Industry Machinery Co., Ltd
Litian Rock Tool Technology & Innovation

Technology & Innovation

Focusing on the technology and innovation is an important factor for Litian Heavy Industry to achieve a leading position in the rock drilling tool and rock breaking tool industry in just over a decade. Our R&D team is composed of product designers and product application experts, who are committed to continuously promoting the development of rock drilling technology and the improvement of rock drilling efficiency.


We work closely with our customers, and every problem and challenge in their operation is the driving force for our research and development and the source of innovation. For research and development, we will conduct a large number of tests in the laboratory and construction sites, and make improvements, and retests again and again according to the test results, until it succeeds.


We are serious about R & D for rock tools

Rock Breaking Tools
Rock Drilling Tools
Drill Rock Tools
Rock Tools
Rock Excavation Tools

-Successively obtained patents-


No.

The Name of the Patent

Patent No.

Date

1

Welding device for disc cutter retaining ring of tunnel boring machine

ZL 2019 2 0963174.6

2020-03-27

2

Tunnel boring machine disc cutter retaining ring

ZL 2019 2 0962528.5

2020-03-31

3

Spreader for clamping TBM cutter ring

ZL 2019 2 0962596.1

2020-06-23

4

Cutting device for replacing damaged disc cutter ring of tunnel boring machine

ZL 2019 2 0962515.8

2020-03-24

5

Adjustable support device for hydraulic drill rod thread processing

ZL 2019 2 0962505.4

2020-03-24

6

Hydraulic drill rod carburizing lifting device

ZL 2019 2 0962475.7

2020-03-31

7

Heavy-duty TBM disc cutter ring

ZL 2019 1 0554897.5

2019-09-20

8

Twin disc center cutter disassembling device of tunnel boring machine

ZL 2019 2 0963103.6

2020-04-17

9

Locking block of TBM disc cutter

ZL 2019 2 0963105.5

2020-03-24

10

Assembling guide cone device for TBM disc cutter retaining ring

ZL 2019 2 0962502.0

2020-03-24

11

Wear-resistant TBM roller cutter structure

ZL 2016 2 1472381.4

2017-07-04

12

Starting torque adjusting mechanism for TBM disc cutter

ZL 2016 2 1472705.4

2017-07-04

13

Upper end cover removal device of TBM disc cutter

ZL 2016 2 1472384.8

2017-07-14

14

Hoisting device of disc cutter hub of tunnel boring machine

ZL 2016 2 1472366.X

2017-11-28

15

Disc cutter of shield machine

ZL 2016 1 1252233.6

2017-04-26

16

Sealing ring seat disassembly device of TBM disc cutter

ZL 2016 2 1472702.0

2017-07-04

17

Measuring gauge for wear of TBM cutter ring

ZL 2016 2 1472369.3

2017-07-04

18

TBM disc cutter sealing structure

ZL 2016 2 1472695.4

2017-06-30

19

Disassembly method of bearing outer ring of TBM disc cutter

ZL 2016 1 1252493.3

2017-08-18

20

Sharp-edged TBM disc cutter structure

ZL 2017 2 1472385.2

2017-07-04

21

Lubricating grease filling device for TBM disc cutter

ZL 2016 2 1472144.8

2017-07-04

22

Hoisting device for disc cutter ring of roadheader

ZL 2016 2 1472368.9

2017-11-28

23

Wear-resistant end cover of TBM disc cutter

ZL 2016 2 1472383.3

2017-07-04

24

A new type of eccentric drill bit

ZL 2013 2 0191508.5

2013-09-11


Litian Updates
Raise Boring Drilling Tools
Jun 29-2022
Project In Progress | Raise Boring Drilling Tools In Yunnan Iron Mine
Yunnan Iron Mine shaft project has started construction in May 2022. The shaft is designed to have a depth of 178 meters and a reaming diameter of about 3 meters. The geological conditions of the mine...
Jun 27-2022
The Working Principle of TBM Cutter Disc Used in Tunnel Engineering
Full-section rock tunnel boring machine (TBM) is a special construction machine for tunnels, which is widely used in subway, railway, highway, municipal, hydropower tunnel projects.The cutter head is ...
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Factors Affecting TBM Cutter Tunneling Efficiency