CN105780767A - Precast pile fast mechanical connection device and construction method - Google Patents
Precast pile fast mechanical connection device and construction method Download PDFInfo
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- CN105780767A CN105780767A CN201610112378.XA CN201610112378A CN105780767A CN 105780767 A CN105780767 A CN 105780767A CN 201610112378 A CN201610112378 A CN 201610112378A CN 105780767 A CN105780767 A CN 105780767A
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- zikou
- prefabricated pile
- pile
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- 238000010276 construction Methods 0.000 title claims abstract description 26
- 230000003014 reinforcing effect Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 230000002787 reinforcement Effects 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 7
- 238000003032 molecular docking Methods 0.000 claims description 6
- 238000013461 design Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 239000003755 preservative agent Substances 0.000 claims description 3
- 230000002335 preservative effect Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000009416 shuttering Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000005452 bending Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000010008 shearing Methods 0.000 description 4
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/52—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments
- E02D5/523—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments composed of segments
- E02D5/526—Connection means between pile segments
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/20—Miscellaneous comprising details of connection between elements
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a precast pile fast mechanical connection device and a construction method. The precast pile fast mechanical connection device comprises a secondary buckle, a primary buckle and a connection accessory used for fixing the secondary buckle and the primary buckle; the primary buckle is of a semi-closed cavity structure with an opening in the top; the secondary buckle is of a closed cavity structure; the secondary buckle is inserted into the primary buckle from the opening in the top of the primary buckle; and the side faces of the secondary buckle and the primary buckle are connected through the connection accessory. The precast pile fast mechanical connection device belongs to mechanical connection; construction is easy and convenient; and operation is easy. Construction personnel can perform construction operation without mastering the complicated construction technology.
Description
Technical field
The invention discloses a kind of prefabricated pile Quick mechanical connecting device and construction method.
Background technology
At present, concrete precast pile uses mainly as architecture foundation pile, is primarily subjected to vertical uniform load q, along with the raising of modern architecture significance level, the underground structures such as Large Underground Parking Space, market, track traffic get more and more, it is necessary to research prefabricated pile is in the popularization and application of underground deep-foundation pit engineering.In deep-foundation pit engineering, prefabricated pile should bear vertical load and horizontal loads, also to use as uplift pile, and therefore, the bending resistance of joint, shearing strength must all are fulfilled for.
Existing pile extension mode is welding and the meshing connection of machinery mainly.Welding Structure is owing to being site operation, weld seam need the pile joint that full, welding completes need after natural cooling could pile sinking continuously, the handy time is more, and weldquality is by the impact of anthropic factor and weather condition, welding quality is difficult to ensure that, junction becomes the weakest link of prefabricated pile carrying.The meshing type of attachment construction quality of existing machinery easily ensures, but joint bending resistance, shearing resistance are converted into bolt or pin tension and are cut, and bolt and pin intensity are limited to size own and material, and bearing capacity is relatively low, according to increased number of method, then affect efficiency of construction.For improving efficiency and the quality of pile extension, the pile extension method seeking other seems particularly necessary.
Summary of the invention
For Problems existing in background technology and weak point, the present invention proposes prefabricated pile Quick mechanical connecting device and construction method.
The technical solution used in the present invention is as follows:
Prefabricated pile Quick mechanical connecting device, including ZIKOU, box and the connection accessory for ZIKOU and box are fixed, described box is an open-topped semi-enclosed cavity body structure, described ZIKOU is a closed cavity body structure, and described ZIKOU is inserted in box from the top open part of box, and the side of ZIKOU and box connects by connecting accessory.
Further, described ZIKOU, it includes end plate, shrouding, side plate and is positioned at side plate and the floor of putting more energy into being connected with side plate, and described end plate lays respectively at the top of side plate and forms a closed cavity body structure with bottom together with side plate with shrouding, and is provided with connecting hole on side plate.
Further, described box, it includes end plate, side plate and is positioned at side plate and the floor of putting more energy into being connected with side plate, and described end plate is positioned at the bottom of side plate and forms a semi-enclosed cavity body structure together with side plate, and is provided with connecting hole on side plate.
Further, described connection accessory, including connecting groove body, stress pin and bolt, described connecting groove body is installed in the connecting hole of ZIKOU and box, installs stress pin in connecting groove body, installs bolt on stress pin.
Further, anti-corrosion material smeared by described box side plate, it is ensured that prefabricated pile connecting device durability Design meets requirement.
Further, described ZIKOU and box save stake with upper and lower two respectively and are connected, and connected mode is that weldering worn by reinforcing bar.
Further, the end plate planar dimension of described ZIKOU is identical with prefabricated pile cross sectional dimensions, wears weldering by end plate and pile body reinforcing bar, ZIKOU is connected with pile body；Bottom shrouding act as closed cavity, does not play stress effect, and thickness is less than end plate and side plate thickness；Having preformed hole on side plate, preformed hole size matches with being connected accessory.
Further, the end plate planar dimension of described box is identical with prefabricated pile cross sectional dimensions, wears weldering by end plate and pile body reinforcing bar, is connected with pile body by box；End plate central does not play stress effect, and thickness is less than edge thickness；Having preformed hole on side plate, preformed hole size matches with being connected accessory.
Further, the wing plate side dimension of described connecting groove and double buckle side plate preformed hole size match, and inner side is taper, matches with stress pin size；The connecting groove wing plate course of processing is welded on side plate in advance, is cut into two parts；Connecting groove base plate has preformed hole, and reserved pore area screw, the later stage is connected with bolt.
Further, the stress pin of described connection accessory is conically shaped body, and side dimension connecting groove wing plate inside dimensions matches；There is preformed hole at stress pin center, and preformed hole size and bolt match；Stress pin bearing capacity meets prefabricated pile carrying designing requirement.
Further, described box side plate height is not less than ZIKOU side plate height.
The construction method of described prefabricated pile Quick mechanical connecting device, comprises the steps of
Step 1 processes joint of precast piles mechanical connecting device, processes welding preformed hole according to prefabricated pile pile body arrangement of reinforcement on the end plate of ZIKOU and box；
Step 2 colligation prefabricated pile steel reinforcement cage, docks ZIKOU and box, with connect accessory fixing after, the end plate of ZIKOU and box is worn weldering respectively and is formed entirety with pile body reinforcing bar, on-the-spot in place enter mould；
Step 3 shuttering, one-piece casting concrete, maintenance；
Step 4 reaches after design strength until concrete, stripper plate；
Step 5 is removed connection accessory, ZIKOU and box and is departed from, and prefabricated pile entirety stake completes；
Step 6 prefabricated pile merogenesis entrucking, transport are to job site；
Step 7 lifting machine lifts by crane first segment construction of prefabricated piles, when after first segment construction of prefabricated piles to precalculated position, fixing first segment prefabricated pile, lifting machine lifting second section prefabricated pile, docks box by ZIKOU, or box docking ZIKOU, saving stake by two and position vertical butt joint up and down, after docking, ZIKOU and box side plate form complete connecting groove body, and stress pin is placed into connecting groove body, fixed by bolt, outside connecting device, smear preservative.
Step 8 repeats step 7 by complete for prefabricated pile integral construction.
The invention compared with prior art, have the advantage that and good effect:
(1) prefabricated pile connecting device of the present invention belongs to mechanical connection, easy construction, easily operates.Workmen need not grasp the construction technology of complexity and can be carried out constructing operation.
(2) bending resistance of joint is converted into the tension of stress pin, and shearing resistance is undertaken by floor of putting more energy into, and bending resistance, shear resistance are greatly reinforced, and improve joint quality.
(3) pile body steel bar stress and joint connection firmly wear weldering so that the framework of steel reinforcement saving stake up and down is integrally formed structure, it is ensured that being reliably connected of upper and lower pile extension.
(4) joint connection is connected with pile body by stake process processed, carries out overall stake processed, it is ensured that later stage pile extension reliability, improve the perpendicularity of stake.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the prefabricated pile Quick mechanical connecting device floor map of the present invention；
Fig. 2 is the longitudinally cutting figure of Fig. 1；
Fig. 3 is the box floor map of the present invention；
Fig. 4 is the longitudinally cutting figure of Fig. 3；
Fig. 5 is the ZIKOU floor map of the present invention；
Fig. 6 is the longitudinally cutting figure of Fig. 5；
Fig. 7 is the connection accessory schematic diagram of the present invention.
In figure: 11-box；12-ZIKOU；13-connects accessory；14-pile body reinforcing bar；31-end plate；32-side plate；33-side plate is put more energy into floor；41-connecting hole；51-end plate；52-side plate；53-side plate is put more energy into floor；61-connecting hole；62-shrouding；71-connecting groove body；72-stress pin；73-bolt.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be described in detail:
As shown in Figure 1 and Figure 2, prefabricated pile Quick mechanical connecting device, including the ZIKOU 12 mutually snapped together and box 11, also include connection accessory 13 fixing to ZIKOU 12 and box 11；Box 11 is an open-topped semi-enclosed cavity body structure, and described ZIKOU 12 is a closed cavity body structure, and described ZIKOU 12 is inserted in box from the top open part of box 11, and the side of ZIKOU 12 and box 11 connects by connecting accessory 13；Described ZIKOU and box save stake with upper and lower two respectively and are connected, and connected mode is that weldering worn by reinforcing bar.Pile body steel bar stress and joint connection firmly wear weldering so that the framework of steel reinforcement saving stake up and down is integrally formed structure, it is ensured that being reliably connected of upper and lower pile extension.
This prefabricated pile connecting device belongs to mechanical connection, easy construction, easily operates.Workmen need not grasp the construction technology of complexity and can be carried out constructing operation.
Further, as shown in Figure 5, Figure 6, ZIKOU 12 cross section is trapezoidal, end plate 51, shrouding 62, side plate 52 and inner side put more energy into the closed cavity that floor 53 forms；Described end plate 51 lays respectively at the top of side plate 52 and forms a closed cavity body structure together with side plate 52 with bottom with shrouding 62, and is provided with connecting hole 61 on side plate 52；After connecting hole 61 is relative with connecting hole 41 position, it is connected by connecting accessory.
Further, as shown in Figure 3, Figure 4, box 11 cross section is inverted trapezoidal, end plate 31, side plate 32 and outside put more energy into the semi-enclosed cavity that floor 33 forms；It includes end plate 31, side plate 32 and is positioned at side plate 32 and the floor of putting more energy into being connected with side plate 32, and described end plate 31 is positioned at the bottom of side plate 32 and forms a semi-enclosed cavity body structure together with side plate, and is provided with connecting hole 41 on side plate；After connecting hole 41 is relative with connecting hole 61 position, it is connected by connecting accessory.
Further, as it is shown in fig. 7, connect accessory to include connecting groove body 71, stress pin 72 and bolt 73, described connecting groove body 71 is installed in the connecting hole of ZIKOU and box, stress pin 72 is installed in connecting groove body, stress pin 72 is installed bolt 73.
The bending resistance of joint is converted into the tension of stress pin, and shearing resistance is undertaken by floor of putting more energy into, and bending resistance, shear resistance are greatly reinforced, and improve joint quality.
Further, anti-corrosion material smeared by box side plate 32, it is ensured that prefabricated pile connecting device durability Design meets requirement.
Further, end plate 51 planar dimension of ZIKOU 12 is identical with prefabricated pile cross sectional dimensions, wears weldering by end plate and pile body reinforcing bar 14, ZIKOU 12 is connected with upper pile body；Bottom shrouding act as closed cavity, does not play stress effect, and thickness is less than end plate and side plate thickness；Having connecting hole 41 on side plate, connecting hole 41 size matches with being connected accessory.
Further, end plate 31 planar dimension of box 11 is identical with prefabricated pile cross sectional dimensions, wears weldering by end plate and pile body reinforcing bar 14, is connected with lower pile body by box 11；Stress effect is not played at end plate 31 center, and thickness is less than edge thickness；Having connecting hole 61 on side plate 32, connecting hole 61 size matches with being connected accessory.
Further, the wing plate side dimension of the connecting groove 71 connecting accessory 13 matches with double buckle side plate preformed hole size, and inner side is taper, matches with stress pin 72 size；The connecting groove 71 wing plate course of processing is welded on side plate in advance, is cut into two parts；Connecting groove 71 base plate has preformed hole, and reserved pore area screw, the later stage is connected with bolt.
Further, the stress pin 72 connecting accessory is conically shaped body, and side dimension connecting groove 71 wing plate inside dimensions matches；
Stress pin 72 material can be cast iron, alloy etc., and there is preformed hole at stress pin center, and preformed hole size and bolt match；Stress pin bearing capacity meets prefabricated pile carrying designing requirement.
Further, owing to ZIKOU 12 is inserted in box, therefore box 11 side plate height is not less than ZIKOU 12 side plate height, it is ensured that both perfect cooperations.
Further, the construction method of prefabricated pile Quick mechanical connecting device, comprise the steps of
Step 1 processes joint of precast piles mechanical connecting device, processes welding preformed hole according to prefabricated pile pile body arrangement of reinforcement on the end plate of ZIKOU and box；
Step 2 colligation prefabricated pile steel reinforcement cage, docks ZIKOU and box, with connect accessory fixing after, the end plate of ZIKOU and box is worn weldering respectively and is formed entirety with pile body reinforcing bar, on-the-spot in place enter mould；
Step 3 shuttering, one-piece casting concrete, maintenance；
Step 4 reaches after design strength until concrete, stripper plate；
Step 5 is removed connection accessory, ZIKOU and box and is departed from, and prefabricated pile entirety stake completes；
Step 6 prefabricated pile merogenesis entrucking, transport are to job site；
Step 7 lifting machine lifts by crane first segment construction of prefabricated piles, when after first segment construction of prefabricated piles to precalculated position, fixing first segment prefabricated pile, lifting machine lifting second section prefabricated pile, docks box by ZIKOU, or box docking ZIKOU, saving stake by two and position vertical butt joint up and down, after docking, ZIKOU and box side plate form complete connecting groove body, and stress pin is placed into connecting groove body, fixed by bolt, outside connecting device, smear preservative.
Step 8 repeats step 7 by complete for prefabricated pile integral construction.
Joint connection is connected with pile body by the present invention in stake process processed, carries out overall stake processed, it is ensured that later stage pile extension reliability, improves the perpendicularity of stake.
The specific embodiment of the present invention is described in conjunction with accompanying drawing although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme, those skilled in the art need not pay various amendments or deformation that creative work can make still within protection scope of the present invention.
Claims (10)
1. prefabricated pile Quick mechanical connecting device, it is characterized in that, including ZIKOU, box and the connection accessory for ZIKOU and box are fixed, described box is an open-topped semi-enclosed cavity body structure, described ZIKOU is a closed cavity body structure, described ZIKOU is inserted in box from the top open part of box, and the side of ZIKOU and box connects by connecting accessory.
2. prefabricated pile Quick mechanical connecting device as claimed in claim 1, it is characterized in that, described ZIKOU includes end plate, shrouding, side plate and is positioned at side plate and the floor of putting more energy into being connected with side plate, described end plate lays respectively at the top of side plate and forms a closed cavity body structure with bottom together with side plate with shrouding, and is provided with connecting hole on side plate.
3. prefabricated pile Quick mechanical connecting device as claimed in claim 2, it is characterised in that the end plate planar dimension of described ZIKOU is identical with prefabricated pile cross sectional dimensions, and the phase wears weldering by end plate and pile body reinforcing bar, ZIKOU is connected with pile body；Described bottom shrouding act as closed cavity, and its thickness is less than end plate and side plate thickness；Connecting hole size on side plate matches with being connected accessory.
4. prefabricated pile Quick mechanical connecting device as claimed in claim 1, it is characterized in that, described box includes end plate, side plate and is positioned at side plate and the floor of putting more energy into being connected with side plate, described end plate is positioned at the bottom of side plate and forms a semi-enclosed cavity body structure together with side plate, and is provided with connecting hole on side plate.
5. prefabricated pile Quick mechanical connecting device as claimed in claim 4, it is characterised in that the end plate planar dimension of described box is identical with prefabricated pile cross sectional dimensions, wears weldering by end plate and pile body reinforcing bar, is connected with pile body by box；End plate thickness is less than edge thickness；The connecting hole size of side plate matches with being connected accessory.
6. prefabricated pile Quick mechanical connecting device as claimed in claim 1, it is characterized in that, described connection accessory includes connecting groove body, stress pin and bolt, described connecting groove body is installed in the connecting hole of ZIKOU and box, stress pin is installed in connecting groove body, stress pin is installed bolt.
7. prefabricated pile Quick mechanical connecting device as claimed in claim 6, it is characterised in that the wing plate side dimension of described connecting groove and double buckle side plate connecting hole size match, and inner side is taper, matches with stress pin size；The connecting groove wing plate course of processing is welded on side plate in advance, is cut into two parts；The base plate of connecting groove has preformed hole, and reserved pore area screw, the later stage is connected with bolt.
8. prefabricated pile Quick mechanical connecting device as claimed in claim 6, it is characterised in that described stress pin is conically shaped body, and side dimension connecting groove wing plate inside dimensions matches；There is preformed hole at stress pin center, and preformed hole size and bolt match；Stress pin bearing capacity meets prefabricated pile carrying designing requirement.
9. prefabricated pile Quick mechanical connecting device as claimed in claim 1, it is characterised in that anti-corrosion material smeared by described box side plate.
10. utilize prefabricated pile Quick mechanical connecting device as claimed in claim 1 to carry out the method constructed, comprise the steps of
Step 1 processes joint of precast piles mechanical connecting device, processes welding preformed hole according to prefabricated pile pile body arrangement of reinforcement on the end plate of ZIKOU and box；
Step 2 colligation prefabricated pile steel reinforcement cage, docks ZIKOU and box, with connect accessory fixing after, the end plate of ZIKOU and box is worn weldering respectively and is formed entirety with pile body reinforcing bar, on-the-spot in place enter mould；
Step 3 shuttering, one-piece casting concrete, maintenance；
Step 4 reaches after design strength until concrete, stripper plate；
Step 5 is removed connection accessory, ZIKOU and box and is departed from, and prefabricated pile entirety stake completes；
Step 6 prefabricated pile merogenesis entrucking, transport are to job site；
Step 7 lifting machine lifts by crane first segment construction of prefabricated piles, when after first segment construction of prefabricated piles to precalculated position, fixing first segment prefabricated pile, lifting machine lifting second section prefabricated pile, docks box by ZIKOU, or box docking ZIKOU, saving stake by two and position vertical butt joint up and down, after docking, ZIKOU and box side plate form complete connecting groove body, and stress pin is placed into connecting groove body, fixed by bolt, outside connecting device, smear preservative；
Step 8 repeats step 7 by complete for prefabricated pile integral construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610112378.XA CN105780767B (en) | 2016-02-29 | 2016-02-29 | Prefabricated pile Quick mechanical attachment means and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610112378.XA CN105780767B (en) | 2016-02-29 | 2016-02-29 | Prefabricated pile Quick mechanical attachment means and construction method |
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| Publication Number | Publication Date |
|---|---|
| CN105780767A true CN105780767A (en) | 2016-07-20 |
| CN105780767B CN105780767B (en) | 2017-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610112378.XA Active CN105780767B (en) | 2016-02-29 | 2016-02-29 | Prefabricated pile Quick mechanical attachment means and construction method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102758431A (en) * | 2012-08-01 | 2012-10-31 | 天津建城基业集团有限公司 | Solid square pile joint connection structure |
| CN103088816A (en) * | 2013-02-01 | 2013-05-08 | 江苏东浦管桩有限公司 | Novel tubular pile connector |
| CN203080510U (en) * | 2012-12-26 | 2013-07-24 | 苏州设计研究院股份有限公司 | Pin-sleeved type pile joint |
| CN103790156A (en) * | 2012-10-26 | 2014-05-14 | 上海中技桩业股份有限公司 | Square buckle plate mechanical pile splicing method for precast square piles |
| CN204753575U (en) * | 2015-03-24 | 2015-11-11 | 俞向阳 | A pile extension mechanism for concrete pile |
| CN105113503A (en) * | 2015-08-20 | 2015-12-02 | 宁波大学 | Precast concrete tubular pile |
-
2016
- 2016-02-29 CN CN201610112378.XA patent/CN105780767B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102758431A (en) * | 2012-08-01 | 2012-10-31 | 天津建城基业集团有限公司 | Solid square pile joint connection structure |
| CN103790156A (en) * | 2012-10-26 | 2014-05-14 | 上海中技桩业股份有限公司 | Square buckle plate mechanical pile splicing method for precast square piles |
| CN203080510U (en) * | 2012-12-26 | 2013-07-24 | 苏州设计研究院股份有限公司 | Pin-sleeved type pile joint |
| CN103088816A (en) * | 2013-02-01 | 2013-05-08 | 江苏东浦管桩有限公司 | Novel tubular pile connector |
| CN204753575U (en) * | 2015-03-24 | 2015-11-11 | 俞向阳 | A pile extension mechanism for concrete pile |
| CN105113503A (en) * | 2015-08-20 | 2015-12-02 | 宁波大学 | Precast concrete tubular pile |
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| Publication number | Publication date |
|---|---|
| CN105780767B (en) | 2017-11-14 |
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Effective date of registration: 20170308 Address after: 250101 Shandong city of Ji'nan province high tech Zone (Lixia District) Shunhua Road No. 2000 Shun Tai Plaza Building 8, room 103 Applicant after: Jinan track traffic Group Co., Ltd Address before: 250101 Shandong city of Ji'nan province high tech Zone (Lixia District) Shunhua Road No. 2000 Shun Tai Plaza Building 8, room 103 Applicant before: Jinan track traffic Group Co., Ltd Applicant before: Shandong Geology Prospecting Machinery Plant |
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