CN104763712A - Self-propelled self-tensioned fixing mechanism - Google Patents
Self-propelled self-tensioned fixing mechanism Download PDFInfo
- Publication number
- CN104763712A CN104763712A CN201510136383.XA CN201510136383A CN104763712A CN 104763712 A CN104763712 A CN 104763712A CN 201510136383 A CN201510136383 A CN 201510136383A CN 104763712 A CN104763712 A CN 104763712A
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- CN
- China
- Prior art keywords
- self
- cone
- cylinder
- center
- screwed connection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000009412 basement excavation Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 7
- 238000005553 drilling Methods 0.000 description 4
- 238000010587 phase diagram Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000005641 tunneling Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B1/00—Devices for securing together, or preventing relative movement between, constructional elements or machine parts
- F16B1/02—Means for securing elements of mechanisms after operation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B2200/00—Constructional details of connections not covered for in other groups of this subclass
- F16B2200/89—Use of a hydraulic action
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a self-propelled self-tensioned fixing mechanism, is a fixing mechanism of a tunnel outline forming device, and solves the problem that a thin-wall drill is deformed so that the device can be damaged while the outline excavation is performed in the tunnel. The self-propelled self-tensioned fixing mechanism comprises a diaphragm energy accumulator, a tension oil cylinder, an external connecting pipe component, a connecting plate, an upper connector, a central rod, a slider, a connecting key, a cone, a spring, and a lower connector. The rest components are the expansion conical head components except the diaphragm energy accumulator, the tension oil cylinder, the external connecting pipe component and the connecting plate; the central rod is in screwed connection with the piston rod of the tension oil cylinder; the upper end of the upper connector is in screwed connection with the external connecting pipe component; the lower end of the upper connector is in screwed connection with the cone; the slider is connected with the central rod through the connecting key; the slider is slid on the cone; the cone is in screwed connection with the lower connector; and the spring is located between the lower plane of the central rod and the upper plane of the lower connector. The self-propelled self-tensioned fixing mechanism uses the single oil cylinder to push the fixing mechanism into a fixing hole, and uses the oil cylinder to push continuously, so the fixing mechanism is tensioned to the external wall, the recoil force supported by the device is bigger, and the tensioning force generated by the tensioning mechanism is bigger. The structure is simple, the cost is low, and the application prospect is extensive.
Description
Technical field
The present invention relates to a kind of tunneling equipment fixed mechanism, particularly a kind of single oil cylinder controls the tunneling equipment fixed mechanism of propelling and tensioner two actions.
Background technique
The present invention is mainly for a kind of fixed mechanism of tunnel contour former design, when carrying out profile excavation in tunnel, 20 thin drilling bits carry out work simultaneously, when drill bit creeps into, equipment bears very large recoil, and once shake during equipment working room; thin drilling bit change can deform; equipment is damaged; therefore must design a kind of fixing device; can bear the axial recoil that the outer bound pair equipment of drilling process produces; can prevent again equipment from producing radial direction and rock, shear thin drilling bit.
Summary of the invention
For above problem, the invention provides a kind of self-propelled from tensioner fixed mechanism, the problem that the fixed mechanism easily occurred when strength increases in solution prior art rocks.
Problem of the present invention realizes with following technical proposals:
A kind of self-propelled, from tensioner fixed mechanism, comprises diaphragm accumulator, turgor cylinder, outer connecting leg assembly, connecting plate, upper connection, center-pole, slide blocks, connecting key, cone, spring, lower contact.Except the outer remaining component of diaphragm accumulator, turgor cylinder, outer connecting leg assembly and connecting plate is expansion cone head group part, center-pole and the screwed connection of turgor cylinder piston rod, upper connection upper end and the screwed connection of outer connecting leg assembly, upper connection lower end and cone screwed connection, slide blocks is connected with center-pole by connecting key, and slide blocks slides in cone, cone and lower contact screwed connection, spring is on center-pole lower plane and lower contact between plane, turgor cylinder piston rod stretches out and drives outside connecting rod assembly and the reach of expansion cone head group part, after moving a certain distance, outer connecting leg upper limit and oil cylinder lower limit are touched, outer connecting leg stops mobile, piston rod continues to stretch out, now promoting center-pole drives slide blocks to move in cone, cone is big top and small bottom, be made up of the inclined-plane of four band dove-tail form slide units, dove-tail form slide unit is provided with the elongated through-holes groove mated with connecting key, 4 slide block folding process external diameters increase, tensioner is on outer wall, the power that cone is born is contrary with the power that slide blocks bears, the recoil of equipment is larger, it is tighter that slide blocks and outer wall paste, bolt block on connecting plate and turgor cylinder cylinder body is bolted, and connecting plate is provided with unthreaded hole, is fixed by bolt and equipment.
The described uniform multiple bolt block of turgor cylinder cylinder body top circumference, be preferably 2, the uniform multiple bolt block of inferior part of the cylinder block circumference, be preferably 2, upper and lower bolt block on same bus, on the face of inferior part of the cylinder block outer surface and bolt block place plane orthogonal, uniform multiple position limit pin, be preferably 2, spacing for external connecting leg assembly; Turgor cylinder is connected with connecting plate by bolt, and piston rod head is screw thread form, links with center-pole screw thread.
Further, outer connecting leg assembly comprises a body, and on body, symmetry opens two elongated slots vertically, and the end of elongated slot one end and body is through, the end of the other end and body is not through, and an arc plate is welded for being installed to the upper limit plate of turgor cylinder cylinder body as outer connecting leg in through one end; Described outer connecting leg assembly lower end and upper connection screwed connection.
Further, connecting plate is L-type, links, while be connected with equipment bolt with described turgor cylinder screw thread bolt.
Further, upper connection upper end and described outer the lower end screwed connection of connecting leg assembly, one end and the screwed connection of cone upper end.
Further, center-pole is the little multidiameter shaft in two broad in the middle, upper end and the screwed connection of turgor cylinder piston rod, and intermediate lands is used for center-pole upper limit, and lower end reduced diameter section is as the mandrel of spring; Described center-pole top shaft part is uniform four grooves axially, for installing described connecting key.
Further, the outside of slide blocks is circular arc, inner side is an inclined-plane, inclined-plane is provided with dove-tail form chute, described dove-tail form chute mates with the dove-tail form slide unit of cone outer conical surface, and slide blocks center is provided with the rectangular groove of ladder-type, is connected with connecting key by screw, connecting key is T-shaped, is connected with slide blocks by screw.
Further, cone is big top and small bottom, and is made up of, dove-tail form slide unit is provided with the elongated through-holes groove mated with connecting key the inclined-plane of four band dove-tail form slide units.
Further, on spring fitting to described center-pole boss lower plane and lower contact between plane.
Further, lower contact is conical under presenting cylinder, top and the screwed connection of cone bottom.
Will further, diaphragm accumulator communicates with described turgor cylinder rodless cavity, and when turgor cylinder internal pressure declines, described diaphragm accumulator is its supplementary pressure.
The present invention uses oil cylinder that fixed mechanism is advanced fixed hole, then continues to use this oil cylinder to advance, by the mechanism of fixed mechanism tensioner to outer wall, the kick that equipment bears is larger, the expanding force that Fastening mechanism produces is larger, and only adopts single cylinder structure, and simply, equipment cost is low.
Below in conjunction with accompanying drawing, the invention will be further described:
Fig. 1 be a kind of self-propelled of the present invention from tensioner fixed mechanism structural front view a, the B-B sectional drawing b of figure a schemes the A-A sectional drawing c of a, the C-C sectional drawing d of figure c;
No. 2 turgor cylinder structural front view a in Fig. 2 Fig. 1, left view b, plan view c, the A-A sectional view d of figure a;
The B-B sectional view c of the A-A sectional view b of 3 extra connecting leg modular construction front view a in Fig. 3 Fig. 1, figure a, figure a;
No. 4 connecting board structure front view a in Fig. 4 Fig. 1, left view b, plan view c;
No. 5 upper connection structure sectional view a, plan view b in Fig. 5 Fig. 1;
The A-A sectional view b of No. 6 center-pole structure front view a in Fig. 6 Fig. 1, figure a;
The B-B sectional view c of the A-A sectional view b of No. 7 slide blocks structure front view a in Fig. 7 Fig. 1, figure a, figure a;
The A-A sectional view b of No. 8 connecting key structure front view a in Fig. 8 Fig. 1, figure a;
The A-A sectional view b of No. 9 cone structure front view a in Fig. 9 Fig. 1, figure a, plan view c;
No. 11 lower contact structure sectional view a, plan view b in Figure 10 Fig. 1;
Figure 11 figure is working procedure schematic diagram of the present invention, and wherein scheme a for advancing front phase diagram, figure b is for being advancing to the position phase diagram, and figure c is that tensioner arrives outer wall phase diagram;
Figure 12 figure is diameter contrast schematic diagram before and after tensioner of the present invention, and wherein scheming a is external diameter figure before tensioner, and figure b is external diameter figure after tensioner;
In figure, each list of reference numerals is: 1, diaphragm accumulator; 2, turgor cylinder; 3, outer connecting leg assembly; 4, connecting plate; 5, upper connection; 6, center-pole; 7, slide blocks; 8, connecting key; 9, cone; 10, spring; 11, lower contact.
See Fig. 1, a kind of self-propelled, from tensioner fixed mechanism, comprises diaphragm accumulator 1, turgor cylinder 2, outer connecting leg assembly 3, connecting plate 4, upper connection 5, center-pole 6, slide blocks 7, connecting key 8, cone 9, spring 10, lower contact 11.Except diaphragm accumulator 1, turgor cylinder 2, outer connecting leg assembly 3 and the outer remaining component of connecting plate 4 are expansion cone head group part; Center-pole 6 and the screwed connection of turgor cylinder 2 piston rod; Upper connection 5 upper end and the screwed connection of outer connecting leg assembly 3; Upper connection 5 lower end and cone 9 screwed connection, slide blocks 7 is connected with center-pole 6 by connecting key 8, and slide blocks 7 slides in cone 9; Cone 9 and lower contact 11 screwed connection; Spring 10 is on center-pole 6 lower plane and lower contact 11 between plane; Turgor cylinder 2 piston rod stretches out outside connecting rod assembly 3 described in drive and the reach of expansion cone head group part, after moving a certain distance, outer connecting leg assembly 3 upper limit and turgor cylinder 1 lower limit are touched, outer connecting leg assembly 3 stops mobile, piston rod continues to stretch out, and now promote center-pole 6 and drive slide blocks 7 to move in cone 9, cone 9 is big top and small bottom, be made up of the inclined-plane of four band dove-tail form slide units, dove-tail form slide unit is provided with the elongated through-holes groove mated with connecting key; Middle 4 slide blocks 7 folding process external diameters increase, and tensioner is on outer wall, and the power that cone 9 is born is contrary with the power that slide blocks 7 bears, and the recoil of equipment is larger, and it is tighter that slide blocks 7 and outer wall paste; Connecting plate 4 is bolted with the bolt block on turgor cylinder 2 cylinder body, and connecting plate 4 is provided with unthreaded hole, is fixed by bolt and equipment.On spring fitting to described center-pole boss lower plane and lower contact between plane.Described diaphragm accumulator 1 communicates with described turgor cylinder 2 rodless cavity, and when turgor cylinder 2 internal pressure declines, described diaphragm accumulator 1 is its supplementary pressure.
See Fig. 2, turgor cylinder 2, cylinder body top circumference uniform two 2 bolt blocks, uniform two bolt blocks of inferior part of the cylinder block circumference, upper and lower two bolt blocks are on same bus, and four bolt blocks are the position limit socket up and down of described outer connecting leg assembly 3; Turgor cylinder 2 is connected with connecting plate 4 by bolt, and piston rod head is screw thread form, links with center-pole 6 screw thread.
See Fig. 3, described outer connecting leg assembly 3 is weldment, and on body, symmetry opens two elongated slots, and one open-minded, and one obstructed, and an arc plate, for being installed to turgor cylinder 2 cylinder body, is then welded in the one end of opening by the one end of opening, and is the upper limit plate of outer connecting leg; Described outer connecting leg assembly 3 lower end and upper connection 5 screwed connection.
See Fig. 4, connecting plate is L-type, links, while be connected with equipment bolt with described turgor cylinder 2 screw thread bolt.
See Fig. 5, upper connection 5 upper end and described outer connecting leg assembly 3 lower end screwed connection, one end and cone 9 upper end screwed connection.
See Fig. 6, center-pole 6 is the little multidiameter shaft in two broad in the middle, upper end and the screwed connection of turgor cylinder 2 piston rod, and intermediate lands is used for center-pole 6 upper limit, and lower end reduced diameter section is as the mandrel of spring 10; Center-pole 6 top shaft part is uniform four grooves axially, for installing described connecting key 8.
See Fig. 7, slide blocks 7, outside is circular arc, inner side is an inclined-plane, and inclined-plane is provided with dove-tail form chute, and dove-tail form chute mates with the dove-tail form slide unit of cone 9 outer conical surface, slide blocks 7 center is provided with the rectangular groove of ladder-type, is connected with connecting key 8 by screw.
See Fig. 8, connecting key 8 is T-shaped, is connected with slide blocks 7 by screw.
See Fig. 9, cone 9 is big top and small bottom, and is made up of, dove-tail form slide unit is provided with the elongated through-holes groove mated with connecting key 8 inclined-plane of four band dove-tail form slide units.
See Figure 10, lower contact 11 is conical under presenting cylinder, top and cone 9 bottom screwed connection.
See Figure 11, Figure 12, technological process of the present invention stretches out outside connecting rod assembly 3 described in drive and the reach of expansion cone head group part for described turgor cylinder 2 piston rod, after moving a certain distance, described outer connecting leg assembly 3 upper limit and turgor cylinder 1 lower limit are touched, outer connecting leg assembly 3 stops mobile, piston rod continues to stretch out, now promoting center-pole 6 drives slide blocks 7 to move in cone 9, 4 slide blocks 7 folding process external diameters increase, tensioner is on outer wall, the power that cone 9 is born is contrary with the power that slide blocks 7 bears, the recoil of equipment is larger, it is tighter that slide blocks 7 and outer wall are fitted.
Claims (8)
1. self-propelled is from a tensioner fixed mechanism, it is characterized in that: comprise diaphragm accumulator (1), turgor cylinder (2), outer connecting leg assembly (3), connecting plate (4), upper connection (5), center-pole (6), slide blocks (7), connecting key (8), cone (9), spring (10), lower contact (11); Except diaphragm accumulator (1), turgor cylinder (2), outer connecting leg assembly (3) and connecting plate (4) outer remaining component are expansion cone head group part; Described center-pole (6) and turgor cylinder (2) piston rod screwed connection; Described upper connection (5) upper end and outer connecting leg assembly (3) screwed connection; Described upper connection (5) lower end and cone (9) screwed connection, described slide blocks (7) is connected with center-pole (6) by connecting key (8), and described slide blocks (7) is in the upper slip of cone (9); Described cone (9) and lower contact (11) screwed connection; Described spring (10) is positioned between center-pole (6) lower plane and the upper plane of lower contact (11); Described connecting plate (4) is bolted with the bolt block on turgor cylinder (2) cylinder body, and connecting plate (4) is provided with through hole, is fixed by bolt and equipment.
2. a kind of self-propelled according to claim 1 is from tensioner fixed mechanism, it is characterized in that: the described uniform multiple bolt block of turgor cylinder (2) cylinder body top circumference, the uniform multiple bolt block of inferior part of the cylinder block circumference, upper and lower bolt block is on same bus, and described bolt block is the position limit socket up and down of described outer connecting leg assembly (3); Turgor cylinder (2) is connected with connecting plate (4) by bolt, and piston rod head is screw thread form, links with center-pole (6) screw thread.
3. a kind of self-propelled according to claim 1 and 2 is from tensioner fixed mechanism, it is characterized in that: described outer connecting leg assembly (3) comprises a body, on body, symmetry opens two elongated slots vertically, the end of elongated slot one end and body is through, the end of the other end and body is not through, and through one end is welded an arc plate and is used for being installed to the upper limit plate of turgor cylinder (2) cylinder body as outer connecting leg; Described outer connecting leg assembly (3) lower end and upper connection (5) screwed connection.
4. a kind of self-propelled according to claim 3 is from tensioner fixed mechanism, it is characterized in that: described center-pole (6) is the little multidiameter shaft in two broad in the middle, upper end and turgor cylinder (2) piston rod screwed connection, intermediate lands is used for spacing to center-pole (6), and lower end diameter section is as the mandrel of spring (10); Described center-pole (6) top shaft part is uniform four grooves axially, for installing described connecting key (8).
5. a kind of self-propelled according to claim 4 is from tensioner fixed mechanism, it is characterized in that: described cone (9) is big top and small bottom, be made up of the inclined-plane of four band dove-tail form slide units, dove-tail form slide unit is provided with the elongated through-holes groove mated with connecting key (8); Slide blocks (7), outside is circular arc, inner side is an inclined-plane, inclined-plane is provided with dove-tail form chute, described dove-tail form chute mates with the dove-tail form slide unit of cone (9) outer conical surface, slide blocks (7) center is provided with the rectangular groove of ladder-type, is connected with connecting key (8) by screw.
6. a kind of self-propelled according to claim 5 is from tensioner fixed mechanism, it is characterized in that: described connecting plate (4) is " L " shape, is connected, while be connected with equipment bolt with described turgor cylinder screw thread bolt.
7. a kind of self-propelled according to claim 6 is from tensioner fixed mechanism, it is characterized in that: described connecting key (8) is " T " font, is connected with slide blocks by screw.
8. a kind of self-propelled according to claim 7 is from tensioner fixed mechanism, it is characterized in that: described lower contact (11) is conical under presenting cylinder, top and cone (9) bottom screwed connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510136383.XA CN104763712B (en) | 2015-03-19 | 2015-03-19 | Self-propelled self-tensioned fixing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510136383.XA CN104763712B (en) | 2015-03-19 | 2015-03-19 | Self-propelled self-tensioned fixing mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104763712A true CN104763712A (en) | 2015-07-08 |
| CN104763712B CN104763712B (en) | 2017-05-17 |
Family
ID=53645731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510136383.XA Active CN104763712B (en) | 2015-03-19 | 2015-03-19 | Self-propelled self-tensioned fixing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104763712B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019205472A1 (en) * | 2018-04-25 | 2019-10-31 | 中国矿业大学 | Controllable pressure injection apparatus based on hydraulic accumulator and method therefor |
| CN110626293A (en) * | 2019-10-25 | 2019-12-31 | 合肥海源机械有限公司 | Inclined oil cylinder for new energy electric special vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2823557Y (en) * | 2005-02-07 | 2006-10-04 | 方莹 | Hydraulic rock quarrying machine |
| CN201460784U (en) * | 2009-08-07 | 2010-05-12 | 中国石油天然气股份有限公司 | Hydraulic diameter-variable expansion tool |
| EP2206876A1 (en) * | 2008-12-23 | 2010-07-14 | Soletanche Freyssinet | Drilling head for drilling machine |
| CN201786306U (en) * | 2010-08-11 | 2011-04-06 | 山东正元地质资源勘查有限责任公司烟台分公司 | Hydraulic inner clamping drill rod fisher |
| CN102374206A (en) * | 2010-08-13 | 2012-03-14 | 四川宏华石油设备有限公司 | Oil cylinder with locking device |
| CN103375141A (en) * | 2012-04-25 | 2013-10-30 | 中国石油天然气集团公司 | Expansion device of expansion pipe |
-
2015
- 2015-03-19 CN CN201510136383.XA patent/CN104763712B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2823557Y (en) * | 2005-02-07 | 2006-10-04 | 方莹 | Hydraulic rock quarrying machine |
| EP2206876A1 (en) * | 2008-12-23 | 2010-07-14 | Soletanche Freyssinet | Drilling head for drilling machine |
| CN201460784U (en) * | 2009-08-07 | 2010-05-12 | 中国石油天然气股份有限公司 | Hydraulic diameter-variable expansion tool |
| CN201786306U (en) * | 2010-08-11 | 2011-04-06 | 山东正元地质资源勘查有限责任公司烟台分公司 | Hydraulic inner clamping drill rod fisher |
| CN102374206A (en) * | 2010-08-13 | 2012-03-14 | 四川宏华石油设备有限公司 | Oil cylinder with locking device |
| CN103375141A (en) * | 2012-04-25 | 2013-10-30 | 中国石油天然气集团公司 | Expansion device of expansion pipe |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019205472A1 (en) * | 2018-04-25 | 2019-10-31 | 中国矿业大学 | Controllable pressure injection apparatus based on hydraulic accumulator and method therefor |
| CN110626293A (en) * | 2019-10-25 | 2019-12-31 | 合肥海源机械有限公司 | Inclined oil cylinder for new energy electric special vehicle |
| CN110626293B (en) * | 2019-10-25 | 2020-11-24 | 合肥海源机械有限公司 | Inclined oil cylinder for new energy electric special vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104763712B (en) | 2017-05-17 |
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Effective date of registration: 20200201 Address after: 065000 No. 77, Golden Road, Langfang, Hebei Patentee after: Geological Minerals Langfang Juli Geotechnical Engineering Technology Development Co., Ltd. Address before: 065000 No. 77, Golden Road, Langfang, Hebei Co-patentee before: Tianjin Zhong Sui Science and Technology Ltd. Patentee before: Geological Minerals Langfang Juli Geotechnical Engineering Technology Development Co., Ltd. |
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Address after: 065000 No. 77, Golden Road, Langfang, Hebei Patentee after: Langfang Juli Exploration Technology Co., Ltd Address before: 065000 No. 77, Golden Road, Langfang, Hebei Patentee before: JULI GEO-ENGINEERING TECHNICAL DEVELOPMENT COMPANY (LANGFANG) |