CN112627837B - Hydraulic milling, drilling and crushing method for rock - Google Patents
Hydraulic milling, drilling and crushing method for rock Download PDFInfo
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- CN112627837B CN112627837B CN202011481482.9A CN202011481482A CN112627837B CN 112627837 B CN112627837 B CN 112627837B CN 202011481482 A CN202011481482 A CN 202011481482A CN 112627837 B CN112627837 B CN 112627837B
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- 238000005553 drilling Methods 0.000 title claims abstract description 51
- 238000003801 milling Methods 0.000 title claims abstract description 44
- 239000011435 rock Substances 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000001125 extrusion Methods 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 7
- 238000010276 construction Methods 0.000 abstract description 13
- 239000000428 dust Substances 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 34
- 239000002360 explosive Substances 0.000 description 3
- 238000005422 blasting Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B3/00—Rotary drilling
- E21B3/02—Surface drives for rotary drilling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/02—Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting
- E21B7/025—Rock drills, i.e. jumbo drills
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
- E21D9/1086—Drives or transmissions specially adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
- E21D9/1093—Devices for supporting, advancing or orientating the machine or the tool-carrier
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a hydraulic rock milling, drilling and crushing method, which comprises the following steps: step one: using a hydraulic milling and drilling machine to open continuous holes on the rock to form a crack free surface; step two: using a drill jumbo or manually drilling to squeeze the hole; step three: the hydraulic squeezing machine is used to insert the squeezing head into the hole, and the rock is squeezed by the hydraulic squeezing force. The method has wide applicability, high construction efficiency and low cost; the construction environment is good, and dust and noise are small.
Description
Technical Field
The invention relates to the technical field of rock breaking, in particular to a hydraulic rock milling, drilling and crushing method.
Background
In various operations such as mining, tunneling and tunnel construction, the excavation operation is often carried out on the rock on the whole surface, and because no free surface exists in the crushing direction, great difficulty is caused to construction, and common construction methods include explosive and hammering rock drilling, wherein the explosive blasting mode has more use limitation, and the explosive blasting method cannot be used in various construction environments. The hammering rock drilling method has the defects of low efficiency, high noise and much dust, and especially encounters hard rock.
Disclosure of Invention
The invention aims to provide a hydraulic rock milling, drilling and crushing method which solves the defects of the existing rock crushing method.
The invention realizes the above purpose through the following technical scheme:
a rock hydraulic milling, drilling and crushing method comprises the following steps:
step one: using a hydraulic milling and drilling machine to open continuous holes on the rock to form a crack free surface;
step two: using a drill jumbo or manually drilling to squeeze the hole;
step three: the hydraulic squeezing machine is used to insert the squeezing head into the hole, and the rock is squeezed by the hydraulic squeezing force.
A further improvement is that the diameter of the holes is 500-800mm.
The hydraulic milling and drilling machine comprises a machine body, a large arm, a swing arm oil cylinder, a milling and drilling assembly and a gesture adjusting oil cylinder, wherein the large arm is rotatably connected to the front end of the machine body, the bottom end of the swing arm oil cylinder is rotatably connected with the machine body, the output end of the swing arm oil cylinder is rotatably connected with the large arm, the milling and drilling assembly is rotatably connected to the front end of the large arm, the bottom end of the gesture adjusting oil cylinder is rotatably connected with the large arm, and the output end of the gesture adjusting oil cylinder is rotatably connected with the milling and drilling assembly.
The milling and drilling assembly is characterized by comprising a barrel, a drill bushing, a pushing oil cylinder, a hydraulic motor and a milling drill bit, wherein the barrel is connected with the large arm and the gesture adjusting oil cylinder, the front end of the barrel is provided with an opening, the drill bushing is movably arranged inside the barrel, the pushing oil cylinder is arranged in the barrel, the output end of the pushing oil cylinder is connected with the drill bushing, the hydraulic motor and the milling drill bit are arranged on the drill bushing, and the output end of the hydraulic motor is connected with the milling drill bit.
The machine is further improved in that the bottom end of the machine body is provided with a travelling wheel driven by a motor, and the machine body is provided with a hydraulic system for providing power sources for the swing arm oil cylinder, the gesture adjusting oil cylinder, the propulsion oil cylinder and the hydraulic motor.
The hydraulic extruding and crushing machine comprises a machine body, a large arm, a swing arm oil cylinder, a crushing assembly and a gesture adjusting oil cylinder, wherein the large arm is rotatably connected to the front end of the machine body, the bottom end of the swing arm oil cylinder is rotatably connected with the machine body, the output end of the swing arm oil cylinder is rotatably connected with the large arm, the crushing assembly is rotatably connected to the front end of the large arm, the bottom end of the gesture adjusting oil cylinder is rotatably connected with the large arm, and the output end of the gesture adjusting oil cylinder is rotatably connected with the crushing assembly.
The device is characterized in that two-dimensional rotation installation pieces are arranged at the front end of the machine body and the extrusion assembly, the bottom end of the large arm and the bottom end of the swing arm oil cylinder are connected with the machine body through the two-dimensional rotation installation pieces, and the output end of the gesture adjusting oil cylinder and the front end of the large arm are connected with the extrusion assembly through the two-dimensional rotation installation pieces.
The further improvement is that the swing arm oil cylinder and the gesture adjusting oil cylinder are of double-cylinder structures, and the double cylinders are not in the same vertical plane.
The further improvement lies in, the crowded broken subassembly comprises framework and a plurality of vertical hydro-cylinder, removal seat, horizontal hydro-cylinder and crowded broken head, the framework is connected with big arm and gesture adjustment hydro-cylinder, is formed with vertical slide rail on the framework, vertical hydro-cylinder is installed inside the framework, remove seat movable mounting on vertical slide rail, and remove the seat one-to-one and be connected with the output of vertical hydro-cylinder, horizontal hydro-cylinder one-to-one is installed on removing the seat, remove and be formed with horizontal slide rail on the seat, crowded broken head one-to-one movable mounting is on horizontal slide rail, and crowded broken head one-to-one is connected with the output of horizontal hydro-cylinder.
The improvement is that the longitudinal oil cylinder, the movable seat, the transverse oil cylinder and the crushing head are all three.
The invention has the beneficial effects that: the method has wide applicability, high construction efficiency and low cost; the construction environment is good, and dust and noise are small.
Drawings
FIG. 1 is a flow chart of a hydraulic rock milling, drilling and crushing method;
FIG. 2 is a schematic construction diagram of a rock hydraulic milling, drilling and crushing method;
FIG. 3 is a schematic structural view of a hydraulic milling and drilling machine;
FIG. 4 is a schematic cross-sectional view of a milling and drilling assembly;
FIG. 5 is a schematic diagram of a hydraulic breaker;
FIG. 6 is a schematic structural view of a crushing assembly;
FIG. 7 is a schematic cross-sectional view of a crushing assembly;
in the figure: 1. a body; 2. a large arm; 3. swing arm oil cylinder; 4. milling and drilling components; 401. a cylinder; 402. a drill sleeve; 403. a thrust cylinder; 404. a hydraulic motor; 405. milling a drill bit; 5. an attitude adjusting cylinder; 6. a crushing assembly; 601. a frame; 602. a longitudinal oil cylinder; 603. a movable seat; 604. a transverse oil cylinder; 605. crushing the head; 606. a longitudinal slide rail; 607. a transverse slide rail; 7. the mounting member is rotated in two dimensions.
Detailed Description
The following detailed description of the present application is provided in conjunction with the accompanying drawings, and it is to be understood that the following detailed description is merely illustrative of the application and is not to be construed as limiting the scope of the application, since numerous insubstantial modifications and adaptations of the application will be to those skilled in the art in light of the foregoing disclosure.
Referring to fig. 1 and 2, a hydraulic rock milling, drilling and crushing method includes the steps:
step one: a hydraulic milling and drilling machine is used for drilling continuous holes on the rock at proper positions and in proper directions of the rock surface, the diameter of each hole is 500-800mm, and a crack free surface is formed;
step two: using a drill jumbo or manually drilling to squeeze the hole;
step three: the hydraulic squeezing machine is used to insert the squeezing head into the hole, and the rock is squeezed by the hydraulic squeezing force.
Referring to fig. 3 and fig. 4 again, in the present invention, the hydraulic milling and drilling machine adopted in the third step includes a machine body 1, a large arm 2, a swing arm cylinder 3, a milling and drilling assembly 4 and an attitude adjustment cylinder 5, wherein the large arm 2 is rotatably connected to the front end of the machine body 1, the bottom end of the swing arm cylinder 3 is rotatably connected to the machine body 1, the output end of the swing arm cylinder 3 is rotatably connected to the large arm 2, the milling and drilling assembly 4 is rotatably connected to the front end of the large arm 2, the bottom end of the attitude adjustment cylinder 5 is rotatably connected to the large arm 2, and the output end of the attitude adjustment cylinder 5 is rotatably connected to the milling and drilling assembly 4.
The bottom end of the machine body 1 is provided with a motor-driven crawler belt traveling wheel, and the machine body 1 is provided with a hydraulic system (a hydraulic pump, a valve and the like) and a hydraulic oil tank. In addition, the rotatable connection is rotatable in a vertical plane, for example, a matching structure of a shaft seat and a rotating shaft can be adopted, so that the telescopic driving of the swing arm oil cylinder 3 can realize the up-and-down swing of the large arm 2, and the telescopic driving of the gesture adjusting oil cylinder 5 can realize the change of the self inclination gesture of the milling and drilling assembly 4, thereby being convenient for drilling holes with different heights and angles.
Wherein, mill and bore subassembly 4 by barrel 401, drill bushing 402, thrust cylinder 403, hydraulic motor 404 and mill drill bit 405 and constitute, barrel 401 is connected with big arm 2 and gesture adjustment cylinder 5, the barrel 401 front end is the opening, drill bushing 402 activity is established inside barrel 401, thrust cylinder 403 is established in barrel 401 and thrust cylinder 403 output is connected with drill bushing 402, thrust cylinder 403 can have a plurality ofly, evenly distributed is at drill bushing 402 tip, hydraulic motor 404 and mill drill bit 405 install on drill bushing 402, and hydraulic motor 404's output is connected with mill drill bit 405. During operation, the telescopic driving of the pushing cylinder 403 can enable the drill bushing 402 to move back and forth along the inside of the cylinder 401, and the hydraulic motor 404 is used for driving the milling bit 405 to rotate, so as to finish milling and drilling operations.
In the invention, the rock drilling trolley adopted in the second step is provided with the mechanical arm which can be lifted and contracted and can rotate in two dimensions, so that the extension arm length of equipment is increased, and the rock drilling construction of the three-step, two-step and full-section tunnel is satisfied; in addition, the drilling trolley is designed into an integrated rock drill capable of simultaneously completing pipe-shed drilling, grouting guide pipe drilling, blast hole drilling and anchor rod drilling; the auxiliary installation of the long arm manipulator can be fixed on the stable hydraulic support of the face. The rock drill trolley solves the construction problems that the tunnel mechanized construction process is converted into flat and complex, the capability of adapting to weak surrounding rock geological tunnels is insufficient, and two construction processes of machinery and manpower coexist.
Referring to fig. 5 to 7, in the present invention, the hydraulic breaker includes a main body 1, a large arm 2, a swing arm cylinder 3, a breaking assembly 6 and a gesture adjusting cylinder 5, the large arm 2 is rotatably connected to the front end of the main body 1, the bottom end of the swing arm cylinder 3 is rotatably connected to the main body 1, the output end of the swing arm cylinder 3 is rotatably connected to the large arm 2, the breaking assembly 6 is rotatably connected to the front end of the large arm 2, the bottom end of the gesture adjusting cylinder 5 is rotatably connected to the large arm 2, and the output end of the gesture adjusting cylinder 5 is rotatably connected to the breaking assembly 6.
The bottom end of the machine body 1 is provided with a motor-driven crawler belt traveling wheel, and the machine body 1 is provided with a hydraulic system (a hydraulic pump, a valve and the like) and a hydraulic oil tank. In addition, the rotatable connection is horizontal or vertical rotation. For example, the front end of the machine body 1 and the crushing assembly 6 are respectively provided with a two-dimensional rotation mounting piece 7, the bottom end of the big arm 2 and the bottom end of the swing arm cylinder 3 are respectively connected with the machine body 1 through the two-dimensional rotation mounting piece 7, and the output end of the gesture adjusting cylinder 5 and the front end of the big arm 2 are respectively connected with the crushing assembly 6 through the two-dimensional rotation mounting piece 7. The two-dimensional rotation mounting piece 7 adopts a combined structure of double movable shafts, wherein one movable shaft is transversely arranged, and the other movable shaft is longitudinally arranged, so that the two-dimensional rotation of the large arm 2 and the crushing assembly 6 is realized.
In particular, the swing arm cylinder 3 and the posture adjustment cylinder 5 are of a double-cylinder structure, and the double cylinders are not in the same vertical plane, for example, the swing arm cylinder and the posture adjustment cylinder can be designed to be at the same height from left to right. Taking the swing arm cylinder 3 as an example, two cylinders in the double-cylinder structure extend simultaneously, so that the large arm 2 can be driven to swing upwards, the two cylinders shorten simultaneously, the large arm 2 is driven to swing downwards, one cylinder extends, the other cylinder shortens, and the large arm 2 is driven to rotate towards the shortened cylinder side, so that the double-cylinder structure can swing up and down, and horizontal rotation can be realized.
The crushing assembly 6 is composed of a frame 601, a plurality of longitudinal cylinders 602, a moving seat 603, transverse cylinders 604 and crushing heads 605, the frame 601 is connected with a large arm 2 and an attitude adjusting cylinder 5, the frame 601 is in a cuboid shape, longitudinal sliding rails 606 are formed on the frame 601, the longitudinal sliding rails 606 are of a strip-shaped sliding groove opening structure, the longitudinal cylinders 602 are arranged inside the frame 601 along the length direction of the frame 601, the moving seat 603 is movably arranged on the longitudinal sliding rails 606, the moving seat 603 is connected with the output ends of the longitudinal cylinders 602 in a one-to-one correspondence manner, the transverse cylinders 604 are arranged on the moving seat 603 in a one-to-one correspondence manner, the transverse sliding rails 607 are formed on the moving seat 603, the crushing heads 605 are movably arranged on the transverse sliding rails 607 in a one-to-one correspondence manner, and the crushing heads 605 are connected with the output ends of the transverse cylinders 604 in a one-to-one correspondence manner.
When the crushing assembly 6 works, the telescopic driving of the longitudinal oil cylinders 602 can drive the movable seat 603 to move along the longitudinal sliding rail 606, so that the specific crushing heads 605 are driven to move, the adjustment of the intervals among the crushing heads 605 is realized, the crushing assembly 6 can be inserted into holes with different intervals, the transverse oil cylinders 604 drive the crushing heads 605 to move along the transverse sliding rail 607 through telescopic driving, the transverse position of each crushing head 605 is changed, when a nonlinear continuous hole is met, the transverse position of one or two of the crushing heads 605 is changed, and each crushing head 605 can be smoothly inserted into the hole, and hydraulic crushing is completed. The crushing head 605 is of a conventional structure.
In particular, the number of the longitudinal oil cylinders 602, the movable seat 603, the transverse oil cylinders 604 and the crushing heads 605 is three, and the crushing work efficiency is high.
The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention.
Claims (5)
1. A rock hydraulic milling, drilling and crushing method is characterized in that: the steps include
Step one: using a hydraulic milling and drilling machine to open continuous holes on the rock to form a crack free surface;
step two: using a drill jumbo or manually drilling to squeeze the hole;
step three: using a hydraulic breaker to insert a breaking head into the hole, and breaking the rock by hydraulic breaking force;
the hydraulic milling and drilling machine comprises a machine body (1), a large arm (2), a swing arm oil cylinder (3), a milling and drilling assembly (4), a crushing assembly (6) and a gesture adjusting oil cylinder (5), wherein the large arm (2) is rotatably connected to the front end of the machine body (1), the bottom end of the swing arm oil cylinder (3) is rotatably connected with the machine body (1), the output end of the swing arm oil cylinder (3) is rotatably connected with the large arm (2), the bottom end of the gesture adjusting oil cylinder (5) is rotatably connected with the large arm (2), and the output end of the gesture adjusting oil cylinder (5) is rotatably connected with the milling and drilling assembly (4);
the milling and drilling assembly (4) consists of a barrel (401), a drill sleeve (402), a pushing oil cylinder (403), a hydraulic motor (404) and a milling drill bit (405), wherein the barrel (401) is connected with a large arm (2) and an attitude adjusting oil cylinder (5), the front end of the barrel (401) is an opening, the drill sleeve (402) is movably arranged inside the barrel (401), the pushing oil cylinder (403) is arranged in the barrel (401), the output end of the pushing oil cylinder (403) is connected with the drill sleeve (402), the hydraulic motor (404) and the milling drill bit (405) are arranged on the drill sleeve (402), and the output end of the hydraulic motor (404) is connected with the milling drill bit (405);
the extrusion component (6) is composed of a frame body (601) and a plurality of longitudinal oil cylinders (602), a moving seat (603), transverse oil cylinders (604) and an extrusion head (605), wherein the frame body (601) is connected with a large arm (2) and an attitude adjusting oil cylinder (5), longitudinal sliding rails (606) are formed on the frame body (601), the longitudinal oil cylinders (602) are arranged inside the frame body (601), the moving seat (603) is movably arranged on the longitudinal sliding rails (606), the moving seat (603) is connected with the output ends of the longitudinal oil cylinders (602) in a one-to-one mode, the transverse oil cylinders (604) are arranged on the moving seat (603) in a one-to-one mode, the extrusion head (605) is movably arranged on the transverse sliding rails (607), and the extrusion head (605) is connected with the output ends of the transverse oil cylinders (604) in a one-to-one mode.
2. The method for hydraulic milling, drilling and crushing of rock according to claim 1, wherein: the diameter of the holes is 500-800mm.
3. The method for hydraulic milling, drilling and crushing of rock according to claim 1, wherein: the device is characterized in that two-dimensional rotation installation pieces (7) are arranged at the front end of the machine body (1) and the extrusion assembly (6), the bottom end of the large arm (2) and the bottom end of the swing arm oil cylinder (3) are connected with the machine body (1) through the two-dimensional rotation installation pieces (7), and the output end of the gesture adjusting oil cylinder (5) and the front end of the large arm (2) are connected with the extrusion assembly (6) through the two-dimensional rotation installation pieces (7).
4. A method of hydraulic rock milling, drilling and crushing according to claim 3, wherein: the swing arm oil cylinder (3) and the gesture adjusting oil cylinder (5) are of double-cylinder structures, and the double cylinders are not in the same vertical plane.
5. The method for hydraulic milling, drilling and crushing of rock according to claim 1, wherein: the longitudinal oil cylinder (602), the movable seat (603), the transverse oil cylinder (604) and the crushing head (605) are all three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011481482.9A CN112627837B (en) | 2020-12-16 | 2020-12-16 | Hydraulic milling, drilling and crushing method for rock |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011481482.9A CN112627837B (en) | 2020-12-16 | 2020-12-16 | Hydraulic milling, drilling and crushing method for rock |
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| CN112627837A CN112627837A (en) | 2021-04-09 |
| CN112627837B true CN112627837B (en) | 2023-05-05 |
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| CN114561951A (en) * | 2022-03-21 | 2022-05-31 | 陈政杰 | Method for excavating and breaking middle part of defective cast-in-place pile |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1727639A (en) * | 2005-05-30 | 2006-02-01 | 马鞍山市惊天液压机械制造有限公司 | Mining and driving method combined splitter with hydraulic breaking hammer |
| CN104895578B (en) * | 2015-06-09 | 2017-05-03 | 中铁工程机械研究设计院有限公司 | Circular-rail multifunctional drill jumbo system |
| CN109296378B (en) * | 2018-10-23 | 2020-02-04 | 中交二航局第二工程有限公司 | Down-the-hole drill matched breaking hammer tunneling and excavating construction method |
| CN109798120A (en) * | 2019-01-25 | 2019-05-24 | 中国铁建重工集团有限公司 | A kind of brill for tunnel excavation splits trolley |
| CN109915162B (en) * | 2019-03-09 | 2024-06-04 | 上海创力集团股份有限公司 | Hard rock cutting device |
| CN109882191B (en) * | 2019-04-02 | 2024-04-12 | 许和翔 | Full-hydraulic splitting trolley |
| CN111997644A (en) * | 2020-09-18 | 2020-11-27 | 中国铁建重工集团股份有限公司 | Assembly comprising shovel milling machine arm support and milling and digging device |
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Denomination of invention: A Hydraulic Milling and Drilling Squeezing Method for Rock Granted publication date: 20230505 Pledgee: Anhui Feixi Rural Commercial Bank Co.,Ltd. Shaomai Branch Pledgor: TIEKE CHUANGHENG NEW MATERIAL TECHNOLOGY CO.,LTD.|ANHUI TIECHUANG NEW MATERIAL TECHNOLOGY CO.,LTD. Registration number: Y2024980000557 |