CN106646802B - Application method of roller type threading machine - Google Patents
Application method of roller type threading machine Download PDFInfo
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- CN106646802B CN106646802B CN201611018882.XA CN201611018882A CN106646802B CN 106646802 B CN106646802 B CN 106646802B CN 201611018882 A CN201611018882 A CN 201611018882A CN 106646802 B CN106646802 B CN 106646802B
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- rod
- driving wheel
- wheel
- threading machine
- shaft
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000003287 optical effect Effects 0.000 claims abstract description 25
- 239000011152 fibreglass Substances 0.000 claims abstract description 18
- 238000007689 inspection Methods 0.000 claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 238000003466 welding Methods 0.000 claims description 7
- 238000002485 combustion reaction Methods 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 3
- 239000002131 composite material Substances 0.000 abstract 1
- 239000011521 glass Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/46—Processes or apparatus adapted for installing or repairing optical fibres or optical cables
- G02B6/50—Underground or underwater installation; Installation through tubing, conduits or ducts
- G02B6/54—Underground or underwater installation; Installation through tubing, conduits or ducts using mechanical means, e.g. pulling or pushing devices
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Electric Cable Installation (AREA)
Abstract
A roller type threading machine using method comprises a vibrating bar and a threading machine; the vibrating rod and the threading machine transmit power through the flexible shaft, the threading machine can be placed in the inspection well, and a hydraulic cylinder is arranged on a chassis of the threading machine; the ejector rod of the hydraulic cylinder is provided with a driving wheel, a driven wheel and a spring, a plurality of grooves are arranged outside the driving wheel and the driven wheel, and the driven wheel is tightly attached to the driving wheel through the elasticity of the spring. When the glass fiber reinforced plastic composite pipe is used, the groove of the driving wheel is aligned to a pipe opening to be constructed, a section of optical cable or glass fiber reinforced plastic rod needing to be pulled is placed at the opening of the groove, and the glass fiber reinforced plastic rod can be fed into or pulled out of the pipe opening along with the rotation of the driving wheel.
Description
Technical Field
A use method of a roller type threading machine belongs to the field of line tools.
Background
With the increase of urban underground pipelines, the workload of threading in the pipelines is more and more, but at present, the threading is completed by a threading device (such as a glass fiber reinforced plastic threading device) manually, so that the efficiency is low and the labor intensity is very high, and therefore, the mechanized threading construction is necessary.
Disclosure of Invention
The application aims to provide a using method of a roller type threading machine, which is used for realizing the purpose of mechanized construction by means of a glass fiber reinforced plastic rod of the threading machine or directly drawing an optical cable. The machine consists of a vibrating bar and a threading machine; the vibrating rod is used as a power matching of the threading machine; the vibrating rod is driven by a motor or an internal combustion engine and adopts an inserted concrete vibrating rod; a motor or an internal combustion engine of the vibrating spear is arranged on a trolley on the ground so as to be convenient for moving;
the manufactured threading machine can be placed in an inspection well where a pipeline is laid, so that threading operation is facilitated; the threading machine is formed by connecting a chassis, a hydraulic cylinder, a bearing seat, a driving wheel and a driven wheel; the chassis is made of a rectangular angle-smearing steel plate; welding a hydraulic cylinder in the middle of the chassis; the hydraulic cylinder adopts a manual one-way hydraulic cylinder, and a base of the hydraulic cylinder is connected with the chassis into a whole in a welding way; (Note: the cylinder must not contain oil during welding to prevent the occurrence of oil vaporization explosion or oil deterioration)
A shaft hole is transversely drilled on a mandril of the hydraulic cylinder and passes through the circle center of the mandril; the ejector rod is provided with a seat plate, the seat plate is made of a rectangular steel plate, a round hole and a plurality of screw holes are respectively drilled in the middle of the seat plate, and the round hole can be just sleeved on the ejector rod; the sleeved seat plate and the ejector rod are vertically welded and connected into a whole; the welded seat plate is arranged right below the shaft hole; the bearing seats are respectively arranged on two sides of the shaft hole by screws, and the bearing seats are fixedly connected with the seat plate into a whole by screws through screw holes; the two fixed bearing blocks and the shaft hole are on the same axis;
cutting off the shell of the rod head of the vibrating rod from the root, inserting a rotating shaft (an original vibrating shaft) in the rod head into a bearing seat and a shaft hole, and connecting the root of the rod head and the side surface of the bearing seat by spot welding (preventing scalding rubber of a hose) into a whole; thereby fixing one end of the hose of the vibrating rod; the inserted rotating shafts are respectively fixed on bearings in the bearing blocks, can be driven by the flexible shaft to flexibly rotate, but cannot axially move; a driving wheel is arranged on the exposed section of the rotating shaft, the driving wheel can synchronously rotate with the rotating shaft, a plurality of grooves are turned outside the driving wheel, the cross sections of the grooves are arc-shaped, and the sizes of the cross sections of the grooves are different, so that the grooves are matched with optical cables (or glass fiber reinforced plastic rods or guide ropes of cables or threading devices) of different types; therefore, the threading machine has higher friction force and higher efficiency when drawing the optical cable or the glass fiber reinforced plastic rod; but the adjusted tension should be controlled within the allowable range of the optical cable.
One side of the upper section (part above the finger shaft hole) of the mandril is provided with a longitudinal key groove; a section of sleeve is arranged on the ejector rod, a section of key matched with the key groove is connected to the inner wall of the sleeve, and the sleeve and the key are connected into a whole; the installed sleeve can only move up and down on the ejector rod and cannot rotate; driven wheels are symmetrically arranged right above the driving wheel, the driven wheels are arranged on a wheel shaft matched with the driven wheels, the driven wheels can flexibly rotate on the wheel shaft, and one end of the wheel shaft of the driven wheels is vertically welded and connected with the middle part of the side wall of the sleeve into a whole; the diameter of the driven wheel is larger than the length of the sleeve; the diameters of the driven wheel and the driving wheel and the corresponding groove sections are the same, so that the purpose of symmetrical matching of two wheels is achieved.
A section of spring is sleeved on the ejector rod at the upper end of the sleeve, and the spring is a pressure spring; a circle of clamping grooves are turned at the upper end of the ejector rod, matched elastic clamping pieces are arranged in the clamping grooves, and the elastic clamping pieces compress the springs on the shaft sleeve; the driven wheel is tightly attached to the driving wheel by the elastic force of the spring.
The using method comprises the following steps: during the use, place near the well head of inspection shaft with the vibrating spear, place the flat ground in the inspection shaft with the threading machine, through the height of pneumatic cylinder adjustment ejector pin and the position on chassis, make the pipeline mouth that the recess on the action wheel of selecting for use aimed at the wanting construction, open the vibrating spear and make the action wheel rotatory according to the direction that needs, at this moment, make reverse rotation from the driving wheel under the drive of action wheel, put into one section optical cable or glass steel pole (can push away and draw) that need the tractive at the opening part of recess, optical cable or glass steel pole will be main, strut from between the driving wheel, just can send into or pull out the pipeline mouth with the glass steel pole along with the rotation of action wheel (only play the effect of pressing the optical cable from the driving wheel).
The beneficial technological effect of this application is: the production efficiency is high, the inspection well can work in a humid and watery environment, the inspection well is very suitable for a deeper inspection well, and meanwhile, the damage to an optical cable or a glass fiber reinforced plastic rod is less, so that the threading device is ideal for people.
Drawings
In the drawings:
FIG. 1 is a front view of a roller threader;
fig. 2 is a side view of the stringing machine 2.
Description of reference numerals:
in the figure, 1, a vibrating rod, 2, a threading machine, 3, an inspection well, 4, a chassis, 5, a hydraulic cylinder, 6, a bearing seat, 7, a driving wheel, 8, a driven wheel, 9, a mandril, 10, a hose, 11, a seat plate, 12, a groove, 13, an optical cable, 14, a rod head, 15, a rotating shaft, 16, a pipeline port, 17, a key groove, 18, a key, 19, a sleeve, 20, a wheel shaft, 21, a spring, 22, a clamping groove, 23 and an elastic clamping piece are arranged.
Detailed Description
As shown in figures 1 and 2, a roller type threading machine is provided, which is used for realizing the purpose of mechanized construction by means of a glass fiber reinforced plastic rod of the threading machine or directly drawing an optical cable. The machine consists of a vibrating rod 1 and a threading machine 2; the vibrating rod 1 is used as the power of the threading machine 2; the vibrating rod 1 is driven by a motor or an internal combustion engine, and the vibrating rod 1 adopts an inserted concrete vibrating rod; a motor or an internal combustion engine of the vibrating rod 1 is arranged on a trolley on the ground so as to be convenient to move;
the manufactured threading machine 2 can be placed in an inspection well 3 for laying pipelines, so that threading operation is facilitated; the threading machine 2 is formed by connecting a chassis 4, a hydraulic cylinder 5, a bearing seat 6, a driving wheel 7 and a driven wheel 8; the chassis 4 is made of a rectangular angle-smearing steel plate; a hydraulic cylinder 5 is welded in the middle of the chassis 4; the hydraulic cylinder 5 adopts a manual one-way hydraulic cylinder, and a base of the hydraulic cylinder 5 is connected with the chassis 4 into a whole in a welding way;
a shaft hole is transversely drilled on a mandril 9 of the hydraulic cylinder 5, and the shaft hole passes through the circle center of the mandril 9; a seat plate 11 is arranged on the ejector rod 9, the seat plate 11 is made of a rectangular steel plate, a round hole and a plurality of screw holes are respectively drilled in the middle of the seat plate 11, and the round holes can be just sleeved on the ejector rod 9; the sleeved seat plate 11 and the ejector rod 9 are vertically welded and connected into a whole; the welded seat plate 11 is arranged right below the shaft hole; mounting bearing seats 6 on two sides of the shaft hole by screws respectively, wherein the bearing seats 6 are fixedly connected with the seat plate 11 into a whole by screws through threaded holes; the two fixed bearing blocks 6 and the shaft holes are on the same axis;
cutting the shell of the rod head 14 of the vibrating rod 1 from the root, inserting a rotating shaft (original vibrating shaft) in the rod head 14 into the bearing seat 6 and the shaft hole, and connecting the root of the rod head 14 and the side surface of one bearing seat 6 into a whole by spot welding (preventing scalding rubber of a hose); thereby fixing one end of the hose 10 of the vibration rod 1; the inserted rotating shafts 15 are respectively fixed on bearings in the bearing block 6, can be driven by the flexible shaft to flexibly rotate, but cannot axially move; a driving wheel 7 is arranged on an exposed section of the rotating shaft 15, the driving wheel 7 can synchronously rotate with the rotating shaft 15, a plurality of grooves 12 are lathed outside the driving wheel 7, the cross sections of the grooves 12 are arc-shaped, and the sizes of the cross sections of the grooves 12 are different, so that the grooves 12 are matched with optical cables (or glass fiber reinforced plastic rods or guide ropes of cables or threading devices) of different types; therefore, the threading machine 2 has higher friction force and higher efficiency when drawing the optical cable 13 or the glass fiber reinforced plastic rod; but the adjusted tension should be controlled within the allowable range of the optical cable 13.
A longitudinal key groove 17 is planed on one side of the upper section (the part above the finger shaft hole) of the mandril 9; a section of sleeve 19 is arranged on the mandril 9, a section of key 18 matched with the key slot 17 is connected on the inner wall of the sleeve 19, and the sleeve 19 and the key 18 are connected into a whole; the installed sleeve 19 can only move up and down on the mandril 9 but cannot rotate; the driven wheels 8 are symmetrically arranged right above the driving wheel 7, the driven wheels 8 are arranged on a wheel shaft 20 matched with the driven wheels 8, the driven wheels 8 can flexibly rotate on the wheel shaft 20, and one end of the wheel shaft 20 of the driven wheels 8 is vertically welded and connected with the middle part of the side wall of the sleeve 19 into a whole; the diameter of the driven wheel 8 is greater than the length of the sleeve 19; the diameters of the driven wheel 8 and the driving wheel 7 and the cross sections of the corresponding grooves 12 are the same, so that the purpose of symmetrical matching of two wheels is achieved.
A section of spring 21 is sleeved on the ejector rod 9 at the upper end of the sleeve 19, and the spring 21 is a pressure spring; a circle of clamping grooves 22 are turned at the upper end of the ejector rod 9, matched elastic clamping pieces 23 are arranged in the clamping grooves 22, and the elastic clamping pieces 23 compress the springs 21 on the shaft sleeve 19; the driven wheel 8 is tightly attached to the driving wheel 7 by the elastic force of the spring 21.
The using method comprises the following steps: during the use, place vibrting spear 1 near the well head of inspection shaft 3, place threading machine 2 on the ground level in inspection shaft 3, adjust the height of ejector pin 9 and the position of chassis 4 through pneumatic cylinder 5, make the recess 12 on the action wheel 7 of selecting for use aim at the pipeline mouth 16 of wanting the construction, open vibrting spear 1 and make action wheel 7 rotate according to required direction, at this moment, from the counter rotation of taking turns 8 under the drive of action wheel 7, put into one section optical cable 13 or glass steel pole (can push and draw) that need the tractive at the opening part of recess 12, optical cable 13 or glass steel pole will be mainly, from propping open between the driving wheel 7, 8, along with the rotation of action wheel 7 (from the effect of taking effect of pressing the optical cable only) just can send into the glass steel pole or drag out the pipeline mouth.
The beneficial technological effect of this application is: the production efficiency is high, the inspection well can work in a humid and watery environment, the inspection well is very suitable for a deeper inspection well, and meanwhile, the damage to an optical cable or a glass fiber reinforced plastic rod is less, so that the threading device is ideal for people.
Claims (1)
1. A roller type threading machine using method, it uses the glass fiber reinforced plastic pole of the threading machine or directly draws the optical cable, so as to realize the purpose of mechanized construction; the method is characterized in that: the vibrating rod (1) is used as the power of the threading machine (2) in a matching way; the vibrating rod (1) is driven by a motor or an internal combustion engine, and the vibrating rod (1) adopts an inserted concrete vibrating rod; a motor or an internal combustion engine of the vibrating rod (1) is arranged on a trolley on the ground so as to be convenient to move;
the manufactured threading machine (2) can be placed in an inspection well (3) for laying a pipeline, so that threading operation is facilitated; the threading machine (2) is formed by connecting a chassis (4), a hydraulic cylinder (5), a bearing seat (6), a driving wheel (7) and a driven wheel (8); the chassis (4) is made of a rectangular angle-smearing steel plate; a hydraulic cylinder (5) is welded in the middle of the chassis (4); the hydraulic cylinder (5) adopts a manual one-way hydraulic cylinder, and a base of the hydraulic cylinder (5) and the chassis (4) are welded and connected into a whole;
a shaft hole is transversely drilled on a mandril (9) of the hydraulic cylinder (5), and the shaft hole passes through the circle center of the mandril (9); a seat plate (11) is arranged on the ejector rod (9), the seat plate (11) is made of a rectangular steel plate, a round hole and a plurality of screw holes are respectively drilled in the middle of the seat plate (11), and the round hole can be just sleeved on the ejector rod (9); the sleeved seat plate (11) and the ejector rod (9) are vertically welded and connected into a whole; the welded seat plate (11) is arranged right below the shaft hole; the bearing seats (6) are respectively arranged on two sides of the shaft hole by screws, and the bearing seats (6) are fixedly connected with the seat plate (11) into a whole by screws through the screw holes; the two fixed bearing blocks (6) and the shaft holes are on the same axis;
cutting off the shell of a rod head (14) of the vibrating rod (1) from the root, inserting a rotating shaft (15) in the rod head (14) into a bearing seat (6) and a shaft hole, and connecting the root of the rod head (14) and the side surface of one bearing seat (6) into a whole by spot welding; thereby fixing one end of the hose (10) of the vibrating rod (1); the inserted rotating shafts (15) are respectively fixed on bearings in the bearing seats (6), can be driven by the flexible shaft to flexibly rotate, but cannot axially move; a driving wheel (7) is arranged on the exposed section of the rotating shaft (15), the driving wheel (7) can synchronously rotate with the rotating shaft (15), a plurality of grooves (12) are formed in the outer side of the driving wheel (7) in a turning mode, the cross sections of the grooves (12) are arc-shaped, and the cross sections of the grooves (12) are different in size, so that the grooves (12) are matched with optical cables of different types; therefore, the threading machine (2) has higher friction force and higher efficiency when drawing the optical cable (13) or the glass fiber reinforced plastic rod; but the adjusted tension is controlled within the allowed range of the optical cable (13) or the glass fiber reinforced plastic rod;
one side of the upper section of the mandril (9) is provided with a longitudinal key slot (17); a section of sleeve (19) is arranged on the ejector rod (9), a section of key (18) matched with the key slot (17) is connected on the inner wall of the sleeve (19), and the sleeve (19) and the key (18) are connected into a whole; the installed sleeve (19) can only move up and down on the mandril (9) but can not rotate; driven wheels (8) are symmetrically arranged right above the driving wheel (7), the driven wheels (8) are arranged on a wheel shaft (20) matched with the driven wheels, the driven wheels (8) can flexibly rotate on the wheel shaft (20), and one end of the wheel shaft (20) of the driven wheels (8) is vertically welded and connected with the middle part of the side wall of the sleeve (19) into a whole; the diameter of the driven wheel (8) is larger than the length of the sleeve (19); the diameters of the driven wheel (8) and the driving wheel (7) and the sections of the corresponding grooves (12) are the same, so that the purpose of symmetrical matching of two wheels is achieved;
a section of spring (21) is sleeved on the ejector rod (9) at the upper end of the sleeve (19), and the spring (21) is selected as a pressure spring; a circle of clamping grooves (22) are formed in the upper end of the ejector rod (9) in a turning mode, matched elastic clamping pieces (23) are installed in the clamping grooves (22), and the elastic clamping pieces (23) compress the springs (21) on the shaft sleeve (19); the driven wheel (8) is tightly attached to the driving wheel (7) by the elasticity of the spring (21);
the using method comprises the following steps: when the inspection well is used, the vibrating rod (1) is placed near a well mouth of the inspection well (3), the threading machine (2) is placed on the ground in the inspection well (3), the height of the ejector rod (9) and the position of the chassis (4) are adjusted through the hydraulic cylinder (5), the groove (12) on the selected driving wheel (7) is aligned to a pipeline opening (16) to be constructed, the vibrating rod (1) is started to enable the driving wheel (7) to rotate according to the required direction, at the moment, the driven wheel (8) rotates in the reverse direction under the driving of the driving wheel (7), a section of optical cable (13) or glass fiber reinforced plastic rod needing to be drawn is placed into an opening of the groove (12), the optical cable (13) or the glass fiber reinforced plastic rod stretches between the driving wheel (7) and the driven wheel (8), and the optical cable (13) or the glass fiber reinforced plastic rod can be sent into or pulled out of the pipeline opening along with the rotation of the driving.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611018882.XA CN106646802B (en) | 2015-04-20 | 2015-04-20 | Application method of roller type threading machine |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510187028.5A CN104767158B (en) | 2015-04-20 | 2015-04-20 | The method of manufacture and use thereof of roller type threader |
| CN201611018882.XA CN106646802B (en) | 2015-04-20 | 2015-04-20 | Application method of roller type threading machine |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510187028.5A Division CN104767158B (en) | 2015-04-20 | 2015-04-20 | The method of manufacture and use thereof of roller type threader |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106646802A CN106646802A (en) | 2017-05-10 |
| CN106646802B true CN106646802B (en) | 2020-02-21 |
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ID=53648854
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510187028.5A Active CN104767158B (en) | 2015-04-20 | 2015-04-20 | The method of manufacture and use thereof of roller type threader |
| CN201611018882.XA Expired - Fee Related CN106646802B (en) | 2015-04-20 | 2015-04-20 | Application method of roller type threading machine |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201510187028.5A Active CN104767158B (en) | 2015-04-20 | 2015-04-20 | The method of manufacture and use thereof of roller type threader |
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| Country | Link |
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| CN (2) | CN104767158B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106144762A (en) * | 2016-07-12 | 2016-11-23 | 国网山东省电力公司济南市历城区供电公司 | Control cable machine for releasing |
| CN110516780B (en) * | 2019-08-29 | 2024-03-26 | 深圳源明杰科技股份有限公司 | Ultrasonic vibration and vertical threading device and method |
| CN111030010A (en) * | 2020-01-16 | 2020-04-17 | 许昌中新精科电气有限责任公司 | Internal space adjustable generating line bridge |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2752066B1 (en) * | 1996-08-01 | 1998-09-04 | Alcatel Submarcom | METHOD FOR OBTAINING A LENGTH OF OPTICAL FIBERS IN A METAL PROTECTION TUBE AND IMPLEMENTATION LINE |
| KR100401342B1 (en) * | 2002-08-31 | 2003-10-10 | Lg Cable Ltd | Apparatus for spinning optical fiber and apparatus and method for fabricating optical fiber using the same |
| CN2638303Y (en) * | 2003-07-23 | 2004-09-01 | 兖矿集团有限公司 | Mine cable towing device |
| US7946356B2 (en) * | 2004-04-15 | 2011-05-24 | National Oilwell Varco L.P. | Systems and methods for monitored drilling |
| CN100389332C (en) * | 2006-06-06 | 2008-05-21 | 北京航空航天大学 | Fiber collecting mechanism for automatic optical fiber winding machine |
| CN101122138A (en) * | 2007-06-01 | 2008-02-13 | 李善文 | Forest and field tectorial membrane, cable, optic cable and pipeline multifunctional inbuilt machine |
| CN201152144Y (en) * | 2007-11-13 | 2008-11-19 | 岳治中 | Vertical type horizontal directional drilling rig with guide wheel |
| CN201149975Y (en) * | 2008-02-03 | 2008-11-12 | 宁波东方电力机具制造有限公司 | Cable conveyer |
| CN100589295C (en) * | 2008-08-11 | 2010-02-10 | 北京交通大学 | Seed laser injection type single mode laser of active optical fiber rod |
| KR101462842B1 (en) * | 2014-07-01 | 2014-11-19 | 일진파워텍(주) | Apparatus and method for installing underground cable using vehicle |
-
2015
- 2015-04-20 CN CN201510187028.5A patent/CN104767158B/en active Active
- 2015-04-20 CN CN201611018882.XA patent/CN106646802B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN104767158B (en) | 2017-10-24 |
| CN104767158A (en) | 2015-07-08 |
| CN106646802A (en) | 2017-05-10 |
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Effective date of registration: 20221221 Address after: 1st Floor, Building F, Zhoucun Liancheng Zhizao Town, Intersection of Silk Road and Liguan Road, Chengbei Sub district Office, Zhoucun District, Zibo City, Shandong Province Patentee after: Shandong Yuteng Medical Instrument Co.,Ltd. Address before: 235000 room 1, unit 34, Li Yuan new village, Xiangshan, Huaibei, Anhui, 202 Patentee before: Feng Lili |
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Granted publication date: 20200221 |