CN103334624B - A kind of portable hydraulic lifting signal tower - Google Patents
A kind of portable hydraulic lifting signal tower Download PDFInfo
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- CN103334624B CN103334624B CN201310244817.9A CN201310244817A CN103334624B CN 103334624 B CN103334624 B CN 103334624B CN 201310244817 A CN201310244817 A CN 201310244817A CN 103334624 B CN103334624 B CN 103334624B
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Abstract
The invention discloses a kind of portable hydraulic lifting signal tower, include steel frame, be arranged on the balancing weight below steel frame, the sky being arranged on the tower body on steel frame and being arranged on tower body top props up.Described tower body includes the five joint tower bars be socketed successively, and often save inside the lower end outside of tower bar and upper end and be respectively equipped with the first flange and the second flange, each second flange of tower bar upper end is connected by screw fit with the first flange of the tower bar above it.Tower body is consisted of the socket of more piece tower bar, convenient transportation.With the second flange, relative for tower bar fixing can be completed installation by the first flange between adjacent towers bar.Described upper tower bar is ejected at first, and described sky props up and decoration ring can be installed after upper tower masthead rises, and again by other tower bars successively upwards jack-up after installing, which reduces the operation of work high above the ground, easy construction and safety.
Description
Technical field
The invention belongs to technical field of communication equipment, be specifically related to a kind of communication lifting tower structure.
Background technology
At present in shop, communication, broadcast, TV signal lamp field extensively adopt communication tower to carry out transmission of wireless signals, communication tower is generally installed one by one by the tower body of more piece, last again at tower top installation signal receiving/transmission device, installation process needs to use large-scale crane, many main equipments such as aerial work platform are assisted, construction trouble, engineering quantity is large, and operating personnel exist certain danger.
Summary of the invention
The object of the invention is: the deficiency existed for prior art, provides the hydraulic lifting tower of a kind of sound construction, easy accessibility.
For realizing the object of the present invention, be achieved by the following technical solutions: a kind of portable hydraulic lifting signal tower, includes steel frame, be arranged on the balancing weight below steel frame, the sky being arranged on the tower body on steel frame and being arranged on tower body top props up.
Described balancing weight is provided with 8 along steel frame length direction, and described balancing weight is the reinforced concrete structure of strip, and balancing weight is provided with the suspension ring of " n " shape above two ends, and suspension ring lower end is fixed on balancing weight inside, and suspension ring two end is bent outwardly in " U " shape; Balancing weight two ends are positioned at inside suspension ring and are provided with the holdfast with beam-to-column connection, and holdfast bottom is fixed on balancing weight inside, is connected with brace between two holdfast bottoms; Described suspension ring are convenient to self-balanced upper rotary, and its both ends are bent into " U " shape, suspension ring can not be deviate from from balancing weight; Described holdfast bottom is connected to brace, is not easy to produce to loosen between such holdfast and configuration block, more can not deviate from, ensure that steel frame and tower body stable, safety.
Described tower body includes the five joint tower bars be socketed successively, and often save inside the lower end outside of tower bar and upper end and be respectively equipped with the first flange and the second flange, each second flange of tower bar upper end is connected by screw fit with the first flange of the tower bar above it; In storage and transportation process, five joint tower bars are nested together like this, and overall volume is little, also use jack to be launched by tower body during convenient installation.
A joint tower bar is lower tower bar bottom, lower tower bar side is provided with a pair hinge wall and steel frame left upper portion is hinged, hinge wall surface is vertically arranged, the position lower tower bar being arranged hinge wall is provided with three dowels along lower tower bar radial direction, dowel is provided with the junction plate vertical with dowel towards hinge wall side, described a pair hinge wall is connected on junction plate, is respectively equipped with two reinforcing ribs between each hinge wall both sides and junction plate, reinforcing rib and hinge wall and junction plate all vertical.In installation tower body process, tower body turns to vertical direction process from horizontal folding direction, and hinge wall position is stressed comparatively large, and its firmness and stability must be very high, can ensure that hinge wall invariant position shape more can not be ruptured by this structure.
The steel column of the tower body supporting deployed condition is provided with below lower tower bar.Described steel column is launched at tower bar and is fixed by flange, after removing out jack, in order to support lower tower bar, ensures the stable of tower body.
The lower position described lower tower bar sidewall being positioned at hinge wall is provided with lower fixation wall, is bolted between fixation wall and steel frame down.Lower fixation wall when tower body turns to vertical direction in order to tower body is located.
The top position described lower tower bar sidewall being positioned at hinge wall is provided with two groups of connecting walls, and the upper and lower side often organizing connecting wall both sides is connected with reinforcing rib sheet, and the wall of reinforcing rib sheet and connecting wall is perpendicular; Two groups of connecting walls are connected with the upper end of steel frame with the second pole respectively by the first pole, and the end of connecting wall and the first pole, the second pole is bolted.Tower body and steel frame are fixed by described lower fixation wall and hinge wall, but lower fixation wall and hinge wall are in a straight line, the side direction torsion that lower fixation wall is subject to is larger, tower body and steel frame are fixed from multiple directions by the first described pole, the second pole, the firmness of such tower body is guaranteed, and tower body and beam-to-column connection position uniform force, be not easy produce aging, long service life.
The side of described lower tower bar is also provided with cat ladder, and cat ladder includes a terraced bar vertically arranged and the staggered pedal being fixed on terraced bar both sides, and described pedal outer end upwards bends up.Described cat ladder be convenient to climbing above lower tower bar so that on upper tower bar, retainer plate is installed, the parts such as sky props up, decoration ring.
Topmost a joint tower bar is upper tower bar, and described sky props up and is provided with two groups, and often group sky props up and is fixed on described upper tower bar by two retainer plates; Described retainer plate includes two connected semicircular circle bodies, and the inwall center of each circle body is connected with the first connector of a T-shaped, and the both ends of circle body are connected to the second connector of T-shaped and the linking arm of a bar shaped; The first described connector and the second connector are provided with the installing hole in order to be connected with communication tower tower body away from that wall of circle body; The wall that second connector is connected with circle body is provided with the first connecting hole, and on linking arm, the position of corresponding first connecting hole is provided with the second connecting hole, and the second connecting hole of the linking arm on the first connecting hole of the second connector and another circle body is bolted; The length of the linking arm of described retainer plate is equal with that wall length that described second connector connects with circle body; The first described connector and the installing hole of the second connector are provided with two; The first connecting hole on the second described connector and the second connecting hole on linking arm are equipped with corresponding two.Two circle bodies can be connected respectively on tower body by installing hole, and bolt can be used to connect as one further by the first connecting hole and the second connecting hole between two other circle body, sound construction, easy accessibility, efficiency of construction is high.
Preferably: often organize the bottom of propping up in sky and be outside equipped with a decoration ring, described decoration ring includes an inner ring and an outer ring be made up of three outer ring bodies; Interior ring outer wall is equidistantly provided with three tube connectors, and outer ring body both ends are respectively equipped with a galianconism and long-armed; Described long-armed end and described tube connector grafting are also fixed by screw, and described galianconism and the long-armed of adjacent outer ring body are connected by screw.Described outer ring uses screw to be connected to form by the outer ring body that three structures are identical, novel structure, and outer ring body is easy to process, cost-saving.
Preferably: 7 of the side that keeps left in 8 described balancing weights are equally spaced, and the distance a between adjacent two balancing weights is 825mm, and the distance b between the balancing weight of two, the rightmost side is 1500mm; Described tower body height is 3000mm.
Preferably: be provided with the multiple reinforced frames in " saying " font perpendicular to balancing weight length direction in described balancing weight, each reinforced frame is connected as a single entity by 8 straight reinforcement welding.
Preferably: the length of the linking arm of described retainer plate is equal with that wall length that described second connector connects with circle body; The first described connector and the installing hole of the second connector are provided with two; The first connecting hole on the second described connector and the second connecting hole on linking arm are equipped with corresponding two.
Compared with prior art, the invention has the beneficial effects as follows: this lifting tower, by the cooperation of balancing weight rational in infrastructure and steel frame, ensures the stable of lifting tower.Described tower body is consisted of the socket of more piece tower bar, convenient transportation, first launch lower tower bar during assembling and be fixed on steel frame by lower fixation wall, the first pole, the cooperation of the second pole, use hydraulic jack by each joint tower bar jack-up straight up afterwards, after launching completely, with the second flange, relative for tower bar fixing can be completed installation by the first flange between adjacent towers bar.Described upper tower bar is ejected at first, and described sky props up and decoration ring can be installed after upper tower masthead rises, and again by other tower bars successively upwards jack-up after installing, which reduces the operation of work high above the ground, easy construction and safety.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the arrangement architecture schematic diagram of balancing weight.
Fig. 3 is the structural representation of balancing weight.
Fig. 4 is that the A-A of Fig. 3 is to structural representation.
Fig. 5 is that the B-B of Fig. 3 is to structural representation.
Fig. 6 is the structural representation of the latter half of the present invention.
Fig. 7 is that the C-C of lower tower bar part in Fig. 6 is to structural representation.
Fig. 8 is the structural representation of hinge wall part.
Fig. 9 is that the D-D of lower tower bar part in Fig. 6 is to structural representation.
Figure 10 is the structural representation of connecting wall part.
Figure 11 is the syndeton schematic diagram of tower body and steel frame.
Figure 12 is the structural representation of cat ladder.
Figure 13 is the structural representation of retainer plate.
Figure 14 is the structural representation of decoration ring.
Figure 15 is the structural representation of the outer ring body of decoration ring.
1, balancing weight; 11, suspension ring; 12, holdfast; 13, reinforced frame; 14, brace; 2, steel frame; 3, steel column; 4, lower tower bar; 41, hinge wall; 411, reinforcing rib; 412, dowel; 413, junction plate; 42, connecting wall; 421, reinforcing rib sheet; 43, lower fixation wall; 51, the first pole; 52, the second pole; 6, cat ladder; 61, terraced bar; 62, pedal; 71, the first flange; 72, the second flange; 8, upper tower bar; 9, sky props up; 91, retainer plate; 911, circle body; 9111, inwall; 912, the first connector; 913, the second connector; 914, linking arm; 915, the first connecting hole; 916, the second connecting hole; 917, installing hole; 92, decoration ring, 921, inner ring; 9211, tube connector; 922, outer ring body; 9221, galianconism; 9222, long-armed.
Detailed description of the invention
With reference to the accompanying drawings the specific embodiment of the present invention is made a detailed explanation below.
According to shown in Fig. 1 to Figure 15, a kind of portable hydraulic lifting signal tower described in the present embodiment, includes steel frame 2, is arranged on the balancing weight 1 below steel frame 2, and the sky being arranged on the tower body on steel frame 2 and being arranged on tower body top props up 9.
Described balancing weight 1 is provided with 8 along steel frame 2 length direction, described balancing weight 1 is the reinforced concrete structure of strip, be provided with the suspension ring 11 of " n " shape above balancing weight 1 two ends, suspension ring 11 lower end is fixed on balancing weight inside, and suspension ring 11 liang of ends are bent outwardly in " U " shape; Balancing weight 1 two ends are positioned at the holdfast 12 being provided with inside suspension ring 11 and being connected with steel frame 2, and it is inner that holdfast 12 bottom is fixed on balancing weight 1, is connected with brace 14 between two holdfast 12 bottoms; Described suspension ring 11 are convenient to self-balanced upper rotary 1, and its both ends are bent into " U " shape, and suspension ring 11 can not be deviate from from balancing weight 1; Described holdfast 12 bottom is connected to brace 14, is not easy to produce to loosen between such holdfast 12 and configuration block 1, more can not deviate from, ensure that steel frame 2 and tower body stable, safety.
Described tower body includes the five joint tower bars be socketed successively, often save inside the lower end outside of tower bar and upper end and be respectively equipped with the first flange 71 and the second flange 72, the second flange 72 of each tower bar upper end is connected by screw fit with the first flange 71 of the tower bar above it; In storage and transportation process, five joint tower bars are nested together like this, and overall volume is little, also use jack to be launched by tower body during convenient installation.
A joint tower bar is lower tower bar 4 bottom, it is hinged with steel frame 2 left upper portion that lower tower bar 4 side is provided with a pair hinge wall 41, hinge wall 41 surface is vertically arranged, the position lower tower bar 4 being arranged hinge wall 41 is provided with three dowels 412 along lower tower bar 4 radial direction, dowel 412 is provided with the junction plate 413 vertical with dowel 412 towards hinge wall 41 side, described a pair hinge wall 41 is connected on junction plate 413, two reinforcing ribs 411 are respectively equipped with between each hinge wall 41 both sides and junction plate 413, reinforcing rib 411 and hinge wall 41 and junction plate 413 all vertical.In installation tower body process, tower body turns to vertical direction process from horizontal direction, and hinge wall 41 position is stressed comparatively large, and its firmness and stability must be very high, can ensure that hinge wall 41 invariant position shape more can not be ruptured by this structure.
The steel column 3 of the tower body supporting deployed condition is provided with below lower tower bar 4.Described steel column 3 is launched at tower bar and is fixed by flange, after removing out jack, in order to support lower tower bar 4, ensures the stable of tower body.
The lower position described lower tower bar 4 sidewall being positioned at hinge wall 41 is provided with lower fixation wall 43, is bolted between lower fixation wall 43 and steel frame 2.Lower fixation wall 43 when tower body turns to vertical direction in order to tower body is located.
The top position described lower tower bar 4 sidewall being positioned at hinge wall 41 is provided with two groups of connecting walls 42, and the upper and lower side often organizing connecting wall 42 both sides is connected with reinforcing rib sheet 421, and reinforcing rib sheet 421 is perpendicular with the wall of connecting wall 42; Two groups of connecting walls 42 are connected with the upper end of steel frame 2 with the second pole 52 respectively by the first pole 51, and the end of connecting wall 42 and the first pole 51, second pole 52 is bolted.Tower body and steel frame are fixed by described lower fixation wall 43 and hinge wall 41, but lower fixation wall 43 and hinge wall 41 are in a straight line, the side direction torsion that lower fixation wall 43 is subject to is larger, tower body and steel frame 2 are fixed from multiple directions by the first described pole 51, second pole 52, the firmness of such tower body is guaranteed, and tower body and steel frame 2 connecting portion uniform force, be not easy produce aging, long service life.
The side of described lower tower bar 4 is also provided with cat ladder 6, and cat ladder 6 includes a terraced bar 61 vertically arranged and the staggered pedal 62 being fixed on terraced bar both sides, and described pedal 62 outer end upwards bends up.Described cat ladder 6 be convenient to climbing above lower tower bar 4 so that on upper tower bar 8, retainer plate 91 is installed, the parts such as sky props up 9, decoration ring 92.
Topmost a joint tower bar is upper tower bar 8, and described sky props up 9 and is provided with two groups, often organizes sky and props up 9 and be fixed on described upper tower bar 8 by two retainer plates 91; Described retainer plate 91 includes two connected semicircular circle bodies 911, the inwall center of each circle body 911 is connected with the first connector 912 of a T-shaped, and the both ends of circle body 911 are connected to the second connector 913 of T-shaped and the linking arm 914 of a bar shaped; The first described connector 912 and the second connector 913 are provided with the installing hole 917 in order to be connected with communication tower tower body away from that wall of circle body 911; The wall that second connector 913 is connected with circle body 911 is provided with the first connecting hole 915, the first connecting hole 915 that on linking arm 914, the position of corresponding first connecting hole 915 is provided with the second connecting hole 916, second connector 913 is bolted with the second connecting hole 916 of the linking arm 914 on another circle body 911.
Often organize the bottom of propping up 9 in sky and be outside equipped with a decoration ring 92, described decoration ring 92 includes an inner ring 921 and an outer ring be made up of three outer ring bodies 922; Interior ring outer wall is equidistantly provided with three tube connectors 9211, and outer ring body 922 both ends are respectively equipped with a galianconism 9221 and one long-armed 9222; Described long-armed 9222 ends and described tube connector 9211 grafting are also fixed by screw, and described galianconism 9221 is connected by screw with long-armed 9222 of adjacent outer ring body 922.Described outer ring uses screw to be connected to form by the outer ring body 922 that three structures are identical, novel structure, and outer ring body 922 is easy to process, cost-saving.
7 of side of keeping left in 8 described balancing weights 1 are equally spaced, and the distance a between adjacent two balancing weights 1 is 825mm, and the distance b between the balancing weight 1 of two, the rightmost side is 1500mm; Described tower body height is 3000mm.
Be provided with the multiple reinforced frames 13 in " saying " font perpendicular to balancing weight 1 length direction in described balancing weight 1, each reinforced frame 13 is connected as a single entity by 8 straight reinforcement welding.
The length of the linking arm 914 of described retainer plate 91 is equal with that wall length that circle body 911 connects with on described second connector 913; The first described connector 912 and the installing hole 917 of the second connector 913 are provided with two; The first connecting hole 915 on the second described connector 913 and the second connecting hole 916 on linking arm 914 are equipped with corresponding two.
When this lifting tower is installed, first arrange each balancing weight 1, then steel frame 2 is installed to above balancing weight 1, be fixedly connected with steel frame 2 by the holdfast 12 on balancing weight 1; Then the tower bar connected together is clockwise to position shown in Fig. 1, namely tower body is vertical state; By bolt lower fixation wall 43 be connected with steel frame 2 thus make tower body be stabilized in vertical state; Then install the first described pole 51 and the second pole 52, first pole 51 and the second pole 52 often to organize and all have two, their one end are connected on the connecting wall 42 of lower tower bar 4, and the other end is connected to the both sides of steel frame 2 width; Then jack is set in lower tower bar 4 lower end, first upper tower bar 8 is upwards ejected, by the first flange 71 of upper tower bar 8 lower end and below it the second flange 72 of the tower bar upper end of a joint be connected and fixed, then on upper tower bar 8, retainer plate 91 is installed successively, sky props up 9 and decoration ring 92; Then again by jack by all the other tower bars upwards jack-up, and to be fixed by the Flange joint of relevant position; Drop back most and drive jack, use steel column 3 to withstand on below lower tower bar 4.
Described upper tower bar 8 is ejected at first, described sky prop up 9 and decoration ring 92 can install after upper tower masthead rises, again by other tower bars successively upwards jack-up after installing, which reduce the operation of work high above the ground, easy construction and safety.
Claims (1)
1. a portable hydraulic lifting signal tower, is characterized in that: include steel frame, is arranged on the balancing weight below steel frame, and the sky being arranged on the tower body on steel frame and being arranged on tower body top props up;
Described balancing weight is provided with 8 along steel frame length direction, and described balancing weight is the reinforced concrete structure of strip, and balancing weight is provided with the suspension ring of " n " shape above two ends, and suspension ring lower end is fixed on balancing weight inside, and suspension ring two end is bent outwardly in " U " shape; Balancing weight two ends are positioned at inside suspension ring and are provided with the holdfast with beam-to-column connection, and holdfast bottom is fixed on balancing weight inside, is connected with brace between two holdfast bottoms;
Described tower body includes the five joint tower bars be socketed successively, and often save inside the lower end outside of tower bar and upper end and be respectively equipped with the first flange and the second flange, each second flange of tower bar upper end is connected by screw fit with the first flange of the tower bar above it;
A joint tower bar is lower tower bar bottom, lower tower bar side is provided with a pair hinge wall and steel frame left upper portion is hinged, hinge wall surface is vertically arranged, the position lower tower bar being arranged hinge wall is provided with three dowels along lower tower bar radial direction, dowel is provided with the junction plate vertical with dowel towards hinge wall side, described a pair hinge wall is connected on junction plate, is respectively equipped with two reinforcing ribs between each hinge wall both sides and junction plate, reinforcing rib and hinge wall and junction plate all vertical;
The steel column of the tower body supporting deployed condition is provided with below lower tower bar;
The lower position described lower tower bar sidewall being positioned at hinge wall is provided with lower fixation wall, is bolted between fixation wall and steel frame down;
The top position described lower tower bar sidewall being positioned at hinge wall is provided with two groups of connecting walls, and the upper and lower side often organizing connecting wall both sides is connected with reinforcing rib sheet, and the wall of reinforcing rib sheet and connecting wall is perpendicular; Two groups of connecting walls are connected with the upper end of steel frame with the second pole respectively by the first pole, and the end of connecting wall and the first pole, the second pole is bolted;
The side of described lower tower bar is also provided with cat ladder, and cat ladder includes a terraced bar vertically arranged and the staggered pedal being fixed on terraced bar both sides, and described pedal outer end upwards bends up;
Topmost a joint tower bar is upper tower bar, and described sky props up and is provided with two groups, and often group sky props up and is fixed on described upper tower bar by two retainer plates; Described retainer plate includes two connected semicircular circle bodies, and the inwall center of each circle body is connected with the first connector of a T-shaped, and the both ends of circle body are connected to the second connector of T-shaped and the linking arm of a bar shaped; The first described connector and the second connector are provided with the installing hole in order to be connected with communication tower tower body away from that wall of circle body; The wall that second connector is connected with circle body is provided with the first connecting hole, and on linking arm, the position of corresponding first connecting hole is provided with the second connecting hole, and the second connecting hole of the linking arm on the first connecting hole of the second connector and another circle body is bolted; The length of the linking arm of described retainer plate is equal with that wall length that described second connector connects with circle body; The first described connector and the installing hole of the second connector are provided with two; The first connecting hole on the second described connector and the second connecting hole on linking arm are equipped with corresponding two;
Often organize the bottom of propping up in sky and be outside equipped with a decoration ring, described decoration ring includes an inner ring and an outer ring be made up of three outer ring bodies; Interior ring outer wall is equidistantly provided with three tube connectors, and outer ring body both ends are respectively equipped with a galianconism and long-armed; Described long-armed end and described tube connector grafting are also fixed by screw, and described galianconism and the long-armed of adjacent outer ring body are connected by screw;
7 of side of keeping left in 8 described balancing weights are equally spaced, and the distance a between adjacent two balancing weights is 825mm, and the distance b between the balancing weight of two, the rightmost side is 1500mm; Described tower body height is 3000mm; Be provided with the multiple reinforced frames in " saying " font perpendicular to balancing weight length direction in described balancing weight, each reinforced frame is connected as a single entity by 8 straight reinforcement welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310244817.9A CN103334624B (en) | 2013-06-18 | 2013-06-18 | A kind of portable hydraulic lifting signal tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310244817.9A CN103334624B (en) | 2013-06-18 | 2013-06-18 | A kind of portable hydraulic lifting signal tower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103334624A CN103334624A (en) | 2013-10-02 |
| CN103334624B true CN103334624B (en) | 2015-08-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310244817.9A Expired - Fee Related CN103334624B (en) | 2013-06-18 | 2013-06-18 | A kind of portable hydraulic lifting signal tower |
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| Country | Link |
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| CN (1) | CN103334624B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110405691A (en) * | 2019-07-24 | 2019-11-05 | 上海勤电信息科技有限公司 | A kind of synthesis bar secondary bar of steel aluminium integrated structure |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5904004A (en) * | 1997-02-25 | 1999-05-18 | Monosite, Inc. | Integrated communications equipment enclosure and antenna tower |
| CN2780903Y (en) * | 2005-01-05 | 2006-05-17 | 李震 | Movable communication tower |
| CN201963022U (en) * | 2011-01-27 | 2011-09-07 | 李震 | Portable communication tower |
| CN102296874A (en) * | 2011-06-10 | 2011-12-28 | 浙江巨匠钢业有限公司 | Hydraulic lifting tower |
| CN102296873A (en) * | 2011-06-10 | 2011-12-28 | 浙江巨匠钢业有限公司 | Mechanical lifting tower |
| CN202689664U (en) * | 2012-07-11 | 2013-01-23 | 浙江巨匠钢业有限公司 | Movable portable communication tower |
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2013
- 2013-06-18 CN CN201310244817.9A patent/CN103334624B/en not_active Expired - Fee Related
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| CN103334624A (en) | 2013-10-02 |
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Address after: 314515 Gaoqiao Street Industrial Zone, Tongxiang City, Jiaxing City, Zhejiang Province Patentee after: Zhejiang Juyi Steel Co.,Ltd. Address before: Takahashi Tongxiang City Industrial Zone Jiaxing city Zhejiang province 314515 Zhejiang masters of Steel Industry Co. Ltd. Patentee before: Zhejiang Jujiang Steel Industrial Co.,Ltd. |
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Granted publication date: 20150826 |
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