CN101994516A - Control system for anchor rod machine and anchor rod machine with same - Google Patents
Control system for anchor rod machine and anchor rod machine with same Download PDFInfo
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- CN101994516A CN101994516A CN 201010506127 CN201010506127A CN101994516A CN 101994516 A CN101994516 A CN 101994516A CN 201010506127 CN201010506127 CN 201010506127 CN 201010506127 A CN201010506127 A CN 201010506127A CN 101994516 A CN101994516 A CN 101994516A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 103
- 239000007789 gas Substances 0.000 description 21
- 238000007789 sealing Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
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Abstract
The invention provides a control system for an anchor rod machine and an anchor rod machine with the same. The control system comprises a control arm 1, a fixing sleeve 2 connected with an outrigger and a gyrator, an outrigger valve 3, a gyrator valve 4, a water valve 5, a control wrench 31 of the outrigger valve, a control wrench 41 of the gyrator valve and a control wrench 51 of the water valve, wherein the control arm 1 is rotatably connected with the fixing sleeve 2; the control wrench 31 of the outrigger valve, the control wrench 41 of the gyrator valve and the control wrench 51 of the water valve are arranged on the control arm 1; the outrigger valve 3, the gyrator valve 4 and the water valve 5 are arranged on the fixing sleeve 2 or the outrigger or the gyrator; and the control wrench 31 of the outrigger valve, the control wrench 41 of the gyrator valve and the control wrench 51 of the water valve are respectively connected with the outrigger valve 3, the gyrator valve 4 and the water valve 5 through flexible shafts 32, 42 and 52. The control system and the anchor rod machine thereof have a simple structure, high reliability, high efficiency and low cost.
Description
Technical field
The present invention relates to a kind of mine with engineering goods and parts thereof, more specifically, relate to a kind of control system of roof-bolter and the roof-bolter of this control system is installed.
Background technology
In mining, especially in coal mining, in wall or end face punching, be absolutely necessary production work and security protection work, the used machinery that punches is called roof-bolter, because the requirement of its environment for use, this roof-bolter must have fire prevention, explosion prevention function, therefore the control of workpiece on the roof-bolter substantially all is machinery control, can not adopt Electromagnetic Control.Existing roof-bolter has hydraulic pressure as power source, air pressure is also arranged as power source because air pressure realize easily, pollution-free, substantially all adopt the gas roof-bolter.A large amount of at present Pneumatic anchor rod machines that use mainly are made up of supporting leg, gyrator assembly and control system, supporting leg is used for the support anchors machine, the gyrator assembly comprises air motor, drilling rod, drill bit etc., be used for boring and anchor pole, control system is used to control the boring and the anchor pole operation of supporting leg and gyrator assembly.Cause can't adopt control modes such as electromagnetism, therefore present control system mainly comprises three parts: control arm, three axises and fixed cover, wherein: control arm and comprise the parts such as controller of controlling arm main body, air inlet port, water inlet, gyrator air valve, supporting leg air valve, water valve and three valves, be connected with three axises; Three axises comprise gyrator gas circuit, supporting leg gas circuit, water route and corresponding seal, and it is connected controls between arm and the fixed cover, make to control arm and fixed cover can relatively rotate; Fixed cover comprises parts such as supporting leg connecting portion, gyrator connecting portion, gyrator gas circuit, supporting leg gas circuit, water route, supporting leg outlet valve, is connected with supporting leg, gyrator and three axises etc.The connection and the position that should have above-mentioned each parts of control system of Pneumatic anchor rod machine now concern that as shown in Figure 1 two sectional drawings among described Fig. 1 are existing two different cutting planes of control system.Wherein, 1 for controlling arm, and 2 is three axises, and 3 is fixed cover, and 4 is inlet suction port, and 5 is the gyrator air valve, and 6 is the supporting leg air valve, and 7 is water valve, and 8 are water supply connector, and 9 is gyrator air valve spanner, and 10 is supporting leg air valve spanner, and 11 is the water valve spanner.
The operating principle of this control system and process are: high-pressure air source and high-pressure water are connected in inlet suction port and water supply connector respectively, after entering, gases at high pressure are divided into two-way, the gyrator air valve of leading up to is connected to the gyrator gas circuit of three axises, be connected to fixed cover by three axises, be connected to gyrator by fixed cover again, wherein the gyrator air valve is by the switch of gyrator air valve spanner control gas and the size of throughput; The supporting leg air valve of leading up in addition is connected to the supporting leg gas circuit of three axises, is connected to fixed cover by three axises, is connected to supporting leg by fixed cover again, and wherein the supporting leg air valve is by the switch of supporting leg air valve spanner control gas and the size of throughput.Water under high pressure is connected to the water route of three axises by water valve, is connected to fixed cover by three axises, is connected to water jacket by fixed cover again, and wherein water valve is by the switch of water valve spanner control water and the size of water-flowing amount.Each control valve control system should be had now because must be installed in and control on the arm, thereby cause between each control valve and each action execution unit and have a segment distance, be gases at high pressure or highly pressurised liquid in this segment distance, therefore this structure is very high for the seal request of existing roof-bolter, thereby mainly has following shortcoming:
1, need higher sealing, and sealing reliability is low.Because of logical gases at high pressure and water under high pressure in three axises, then generally need 6～9 road sealing rings on three axises, not only make and the installation cost height, and after using a period of time, damage easily, cause and leak gas and leak, sealing reliability is poor;
2, complex structure, installation and processing inconvenience.The valve body of control system and control section all mainly concentrate on and control on the arm, cause inner air path and water route complicated layout, thus processing cost height, assembling inconvenience, and reliability is low, damages easily;
3, overall efficiency is low.Gas circuit be because the restriction of rotatory sealing place space structures must reduce latus rectum in rotation place, and the gas circuit complications turn round manyly, and this causes the gases at high pressure energy loss big, makes the efficient of complete machine reduce.
Adopt the Pneumatic anchor rod machine of above-mentioned control system, have identical shortcoming, therefore,, need improve existing Pneumatic anchor rod machine and control system thereof in order to save energy and reduce the cost and to reduce cost.
Summary of the invention
In order to solve above-mentioned existing roof-bolter and control system seal request height thereof, complex structure, technical problems such as efficient is low or one of at least, the invention provides a kind of control system of roof-bolter, comprise and control arm 1, the fixed cover 2 that is connected with gyrator with supporting leg, support leg valve 3, gyrator valve 4, water valve 5, support leg valve control spanner 31, gyrator valve control spanner 41 and water valve control spanner 51, the described arm 1 of controlling is connected with described fixed cover 2 rotationally, it is characterized in that, described support leg valve control spanner 31, gyrator valve control spanner 41 and water valve control spanner 51 are arranged on described controlling on the arm 1, described support leg valve 3, gyrator valve 4 and water valve 5 are arranged on the described fixed cover 2 or on the supporting leg or on the gyrator, described support leg valve is controlled spanner 31, gyrator valve control spanner 41, water valve control spanner 51 is by flexible axle 32,42,52 respectively with described support leg valve 3, gyrator valve 4, water valve 5 connects.
Preferably, described support leg valve 3 is connected with inlet suction port 6 with gyrator valve 4, and described water valve 5 is connected with water supply connector 7.
Further, described support leg valve 3, gyrator valve 4 and water valve 5 are arranged in the valve body case in the described fixed cover 2.
Perhaps, connect the other end of the described flexible axle 42 of described gyrator valve 4, be connected simultaneously on the control spanner 45 with the other end of the described flexible axle 52 that is connected described water valve 5.
Correspondingly, the present invention also provides a kind of roof-bolter with the above-mentioned control system of the present invention, comprise supporting leg, gyrator, control arm 1 and fixed cover 2, support leg valve 3, gyrator valve 4, water valve 5, support leg valve control spanner 31, gyrator valve control spanner 41 and water valve control spanner 51, described supporting leg, gyrator with control arm 1 and be connected with described fixed cover 2, and the described arm 1 of controlling can rotate with respect to fixed cover 2, it is characterized in that, described support leg valve control spanner 31, gyrator valve control spanner 41 and water valve control spanner 51 are arranged on described controlling on the arm 1, described support leg valve 3, gyrator valve 4 and water valve 5 are arranged on the described fixed cover 2 or on the supporting leg or on the gyrator, described support leg valve is controlled spanner 31, gyrator valve control spanner 41, water valve control spanner 51 is by flexible axle 32,42,52 respectively with described support leg valve 3, gyrator valve 4, water valve 5 connects.
Preferably, described support leg valve 3 is connected with inlet suction port 6 with gyrator valve 4, and described water valve 5 is connected with water supply connector 7.
Further, described support leg valve 3, gyrator valve 4 and water valve 5 are arranged in the valve body case in the described fixed cover 2.
Perhaps, connect the other end of the described flexible axle 42 of described gyrator valve 4, be connected simultaneously on the control spanner 45 with the other end of the described flexible axle 52 that is connected described water valve 5.
According to the control system of roof-bolter provided by the invention than prior art, described gyrator valve, support leg valve, water valves etc. have broken away from controls arm, and three axises have been removed, the substitute is has increased the flexible axle that connects each control valve and corresponding control spanner, the operating principle of this this control system is: inlet suction port (also can be other fluid media (medium)s) and water supply connector connect source of the gas and water source respectively, gases at high pressure are divided into two-way after entering the valve group, the gyrator valve of leading up to is connected to gyrator, and wherein the gyrator valve is controlled spanner is controlled its switch and throughput by flexible axle size by the gyrator valve of controlling on the arm; The support leg valve of leading up in addition is connected to supporting leg, and wherein support leg valve is controlled spanner is controlled its switch and throughput by flexible axle size by the support leg valve of controlling on the arm; Water under high pressure is connected to water jacket by water valve, and wherein water valve is controlled spanner is controlled its switch and water-flowing amount by flexible axle size by the water valve of controlling on the arm.Fixed cover is still with gyrator, supporting leg with control arm and be connected, and the described arm of controlling can rotate relatively with described fixed cover.Therefore, compared with prior art, the invention has the advantages that:
1, reliability height.Seal of the present invention has only three valve bodies, has removed the sealing in 6～9 roads at original required revolving part-three axis place, thereby sealing reliability and safe handling time are greatly improved.
2, simple in structure.After arm is controlled in each valve body disengaging, control and have only control spanner and flexible axle on the arm, original relatively technology is simplified greatly, has reduced the cost of processing and assembling, uses safety and reliability.
3, improved operating efficiency.After arm is controlled in each valve body disengaging, there has not been the restriction of original rotary connector-three axis, designs simplification, path has reduced a lot of tortuous corners, make the path of gases at high pressure (perhaps other high-pressure fluids) more smooth and easy, flux is bigger, effectively improves the operating efficiency of pipeline equipment.Initial estimate for the Pneumatic anchor rod machine, provides efficient about 10%.
The control system of the roof-bolter that the present invention is above-mentioned efficiently solves technical problems such as seal request height, complex structure, efficient that prior art exists are low, and application prospect is extensive.
Adopt the roof-bolter of above-mentioned control system provided by the invention, with respect to prior art, move saferly, reliable, efficient, light, and cost is cheaper, meets the requirements of the times of environmental protection low-carbon (LC).
Description of drawings
Fig. 1 is the generalized section of the control system of existing roof-bolter;
Fig. 2 is the schematic diagram of control system one embodiment of roof-bolter of the present invention;
Fig. 3 is the AA sectional view of Fig. 2;
Fig. 4 is the schematic diagram of another embodiment of control system of roof-bolter of the present invention.
The specific embodiment
Below in conjunction with description of drawings according to the specific embodiment of the present invention.
Set forth a lot of details in the following description so that fully understand the present invention, still, the present invention can also adopt other to be different from other modes described here and implement, and therefore, the present invention is not limited to the restriction of following public specific embodiment.
Fig. 2 shows the schematic diagram according to control system one embodiment of roof-bolter of the present invention, and Fig. 3 is the AA sectional view of Fig. 2.
As shown in Figures 2 and 3, control system according to a kind of roof-bolter of the present invention, comprise and control arm 1, the fixed cover 2 that is connected with gyrator with supporting leg, support leg valve 3, gyrator valve 4, water valve 5, support leg valve control spanner 31, gyrator valve control spanner 41 and water valve control spanner 51, the described arm 1 of controlling is connected with described fixed cover 2 rotationally, it is characterized in that, described support leg valve control spanner 31, gyrator valve control spanner 41 and water valve control spanner 51 are arranged on described controlling on the arm 1, described support leg valve 3, gyrator valve 4 and water valve 5 are arranged on the described fixed cover 2, described support leg valve control spanner 31, gyrator valve control spanner 41, water valve control spanner 51 is by flexible axle 32,42,52 respectively with described support leg valve 3, gyrator valve 4, water valve 5 connects.So, then support leg valve 3, gyrator valve 4 and water valve 5 have broken away from and have controlled arm 1, be directly installed on the fixed cover 2, with each controlled actuator: supporting leg, gyrator and water jacket etc. are very near, need not three axises of the prior art, thereby reduced the length of high pressure sealing and high-pressure passage, seal request greatly reduces, energy loss also greatly reduces, thereby has reduced cost, improved application life.
In the foregoing description, described support leg valve 3, gyrator valve 4 and water valve 5 are arranged on the described fixed cover 2, skilled in the art will recognize that, support leg valve 3, gyrator valve 4 and water valve 5 also can be arranged on the supporting leg or on the gyrator, as long as distance can realize goal of the invention of the present invention with each controlled actuator is very short.
Preferably, state support leg valve 3 and be connected with inlet suction port 6 with gyrator valve 4, described water valve 5 is connected with water supply connector 7.The working media of controlling medium and roof-bolter thereof that is control system of the present invention is gases at high pressure, because gas need not recycling, and safety, environmental protection, all using pneumatic mode now basically, this also is a preferred implementation of the present invention.
Further, described support leg valve 3, gyrator valve 4 and water valve 5 are arranged in the valve body case in the described fixed cover 2.Each valve body can be concentrated like this and fix, help saving the space, and be convenient to maintenance.
As shown in Figure 4, another embodiment for the control system of roof-bolter of the present invention, compare the foregoing description, its difference is to connect the other end of the described flexible axle 42 of described gyrator valve 4, be connected simultaneously on the control spanner 45 with the other end of the described flexible axle 52 that is connected described water valve 5, other structures are same as the previously described embodiments, repeat no more.This embodiment can be controlled gyrator valve and water valve simultaneously, and hand of workman can be controlled the operation of gyrator and water supply simultaneously, and guarantees that drill bit works at the beginning the water supply is just arranged, and can protect drill bit.
The present invention also provides a kind of roof-bolter with the described control system of the foregoing description, comprise supporting leg, gyrator, control arm 1 and fixed cover 2, support leg valve 3, gyrator valve 4, water valve 5, support leg valve control spanner 31, gyrator valve control spanner 41 and water valve control spanner 51, described supporting leg, gyrator with control arm 1 and be connected with described fixed cover 2, and the described arm 1 of controlling can rotate with respect to fixed cover 2, it is characterized in that, described support leg valve control spanner 31, gyrator valve control spanner 41 and water valve control spanner 51 are arranged on described controlling on the arm 1, described support leg valve 3, gyrator valve 4 and water valve 5 are arranged on the described fixed cover 2, described support leg valve control spanner 31, gyrator valve control spanner 41, water valve control spanner 51 is by flexible axle 32,42,52 respectively with described support leg valve 3, gyrator valve 4, water valve 5 connects.
In the present embodiment, described support leg valve 3, gyrator valve 4 and water valve 5 are arranged on the described fixed cover 2, but skilled in the art will recognize that, support leg valve 3, gyrator valve 4 and water valve 5 also can be arranged on the supporting leg or on the gyrator, as long as distance can realize goal of the invention of the present invention with each controlled actuator is very short.
Preferably, described support leg valve 3 is connected with inlet suction port 6 with gyrator valve 4, and described water valve 5 is connected with water supply connector 7.Be that described roof-bolter is the Pneumatic anchor rod machine.
Further, described support leg valve 3, gyrator valve 4 and water valve 5 are arranged in the valve body case in the described fixed cover 2.
Perhaps, connect the other end of the described flexible axle 42 of described gyrator valve 4, be connected simultaneously on the control spanner 45 with the other end of the described flexible axle 52 that is connected described water valve 5.Thereby realize the interlock of gyrator valve 4 and water valve 5, hand of workman just can be controlled gyrator valve and water valve simultaneously.
Although the above embodiments of the present invention are to be the explanation that example is carried out with the control system of Pneumatic anchor rod machine and pneumatic roof-bolter, in fact also can be used for the roof-bolter control system and the roof-bolter thereof of working media, for example hydraulic anchor machine and control system thereof for other fluids.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. the control system of a roof-bolter, comprise and control arm (1), the fixed cover (2) that is connected with gyrator with supporting leg, support leg valve (3), gyrator valve (4), water valve (5), support leg valve control spanner (31), gyrator valve control spanner (41) and water valve control spanner (51), the described arm (1) of controlling is connected with described fixed cover (2) rotationally, it is characterized in that, described support leg valve control spanner (31), gyrator valve control spanner (41) and water valve control spanner (51) are arranged on described controlling on the arm (1), described support leg valve (3), gyrator valve (4) and water valve (5) are arranged on the described fixed cover (2) or on the described supporting leg or on the described gyrator, described support leg valve is controlled spanner (31), gyrator valve control spanner (41), water valve control spanner (51) is by flexible axle (32,42,52) respectively with described support leg valve (3), gyrator valve (4), water valve (5) connects.
2. the control system of roof-bolter according to claim 1 is characterized in that, described support leg valve (3) is connected with inlet suction port (6) with gyrator valve (4), and described water valve (5) is connected with water supply connector (7).
3. according to the control system of claim 1 or 2 described roof-bolters, it is characterized in that described support leg valve (3), gyrator valve (4) and water valve (5) are arranged in the interior valve body case of described fixed cover (2).
4. the control system of roof-bolter according to claim 3, it is characterized in that, the other end that connects the described flexible axle (42) of described gyrator valve (4) is connected on the control spanner (45) simultaneously with the other end of the described flexible axle (52) that is connected described water valve (5).
5. roof-bolter, comprise supporting leg, gyrator, control arm (1) and fixed cover (2), support leg valve (3), gyrator valve (4), water valve (5), support leg valve control spanner (31), gyrator valve control spanner (41) and water valve control spanner (51), described supporting leg, gyrator with control arm (1) and be connected with described fixed cover (2), and the described arm (1) of controlling can rotate with respect to fixed cover (2), it is characterized in that, described support leg valve control spanner (31), gyrator valve control spanner (41) and water valve control spanner (51) are arranged on described controlling on the arm (1), described support leg valve (3), gyrator valve (4) and water valve (5) are arranged on the described fixed cover (2) or on the described supporting leg or on the described gyrator, described support leg valve is controlled spanner (31), gyrator valve control spanner (41), water valve control spanner (51) is by flexible axle (32,42,52) respectively with described support leg valve (3), gyrator valve (4), water valve (5) connects.
6. roof-bolter according to claim 5 is characterized in that, described support leg valve (3) is connected with inlet suction port (6) with gyrator valve (4), and described water valve (5) is connected with water supply connector (7).
7. according to claim 5 or 6 described roof-bolters, it is characterized in that described support leg valve (3), gyrator valve (4) and water valve (5) are arranged in the interior valve body case of described fixed cover (2).
8. roof-bolter according to claim 7 is characterized in that, connects the other end of the described flexible axle (42) of described gyrator valve (4), is connected simultaneously on the control spanner (45) with the other end of the described flexible axle (52) that is connected described water valve (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105061272A CN101994516B (en) | 2010-10-09 | 2010-10-09 | Control system for anchor rod machine and anchor rod machine with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105061272A CN101994516B (en) | 2010-10-09 | 2010-10-09 | Control system for anchor rod machine and anchor rod machine with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101994516A true CN101994516A (en) | 2011-03-30 |
| CN101994516B CN101994516B (en) | 2012-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105061272A Expired - Fee Related CN101994516B (en) | 2010-10-09 | 2010-10-09 | Control system for anchor rod machine and anchor rod machine with same |
Country Status (1)
| Country | Link |
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| CN (1) | CN101994516B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201254948Y (en) * | 2008-09-10 | 2009-06-10 | 浙江衢州煤矿机械总厂有限公司 | Pneumatic anchor rod hammer drill |
| US7637086B2 (en) * | 2006-11-29 | 2009-12-29 | J-Lok Co. | System and method for producing resin cartridges |
| CN201460711U (en) * | 2009-06-04 | 2010-05-12 | 孙伟 | Top and side dual-purpose pneumatic jumbolter |
| CN201546618U (en) * | 2009-06-03 | 2010-08-11 | 青岛达邦钻机有限责任公司 | Pneumatic anchor bolt rock drill |
| CN201581813U (en) * | 2009-12-04 | 2010-09-15 | 北京建研机械科技有限公司 | Soft soil foundation multifunctional spiral anchor rod bit |
| CN201953386U (en) * | 2010-10-09 | 2011-08-31 | 石家庄中煤装备制造股份有限公司 | Control system of bolting machine and bolting machine with control system |
-
2010
- 2010-10-09 CN CN2010105061272A patent/CN101994516B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7637086B2 (en) * | 2006-11-29 | 2009-12-29 | J-Lok Co. | System and method for producing resin cartridges |
| CN201254948Y (en) * | 2008-09-10 | 2009-06-10 | 浙江衢州煤矿机械总厂有限公司 | Pneumatic anchor rod hammer drill |
| CN201546618U (en) * | 2009-06-03 | 2010-08-11 | 青岛达邦钻机有限责任公司 | Pneumatic anchor bolt rock drill |
| CN201460711U (en) * | 2009-06-04 | 2010-05-12 | 孙伟 | Top and side dual-purpose pneumatic jumbolter |
| CN201581813U (en) * | 2009-12-04 | 2010-09-15 | 北京建研机械科技有限公司 | Soft soil foundation multifunctional spiral anchor rod bit |
| CN201953386U (en) * | 2010-10-09 | 2011-08-31 | 石家庄中煤装备制造股份有限公司 | Control system of bolting machine and bolting machine with control system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101994516B (en) | 2012-08-15 |
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Address after: 050035 Xiangjiang Road, Shijiazhuang high tech Zone, Hebei, No. 418 Patentee after: JIKAI EQUIPMENT MANUFACTURING CO., LTD. Address before: 050035 No. 89 the Yellow River Avenue, Shijiazhuang hi tech Development Zone, Hebei Patentee before: Shijiazhuang Zhongmei Coal Mine Equipment Manufacture Co., Ltd. |
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Effective date of registration: 20160606 Address after: 050035 room, room, room 418, No. 409, Xiangjiang Road, hi tech Zone, Shijiazhuang, Hebei, China, 408 Patentee after: Hebei Mechanical & Electrical Technology Co., Ltd. Address before: 050035 Xiangjiang Road, Shijiazhuang high tech Zone, Hebei, No. 418 Patentee before: JIKAI EQUIPMENT MANUFACTURING CO., LTD. |
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