CN201161910Y - Operation arm expansion system of platform for work high above ground - Google Patents
Operation arm expansion system of platform for work high above ground Download PDFInfo
- Publication number
- CN201161910Y CN201161910Y CNU2007201778701U CN200720177870U CN201161910Y CN 201161910 Y CN201161910 Y CN 201161910Y CN U2007201778701 U CNU2007201778701 U CN U2007201778701U CN 200720177870 U CN200720177870 U CN 200720177870U CN 201161910 Y CN201161910 Y CN 201161910Y
- Authority
- CN
- China
- Prior art keywords
- working arm
- frid
- arm
- joint
- telescopic
- 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.)
- Expired - Fee Related
Links
- 238000003466 welding Methods 0.000 claims description 38
- 241000755266 Kathetostoma giganteum Species 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 10
- 239000004677 Nylon Substances 0.000 claims description 5
- 230000014759 maintenance of location Effects 0.000 claims description 5
- 229920001778 nylon Polymers 0.000 claims description 5
- 229910000746 Structural steel Inorganic materials 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 230000001595 contractor effect Effects 0.000 claims description 2
- 229910000617 Mangalloy Inorganic materials 0.000 description 9
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 7
- 229910000754 Wrought iron Inorganic materials 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Images
Landscapes
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The utility model provides a working arm telescopic system of an aerial working platform, which comprises three layers of working arms, a telescopic cylinder, a sprocket wheel and a driving chain, wherein three layers of sleeve arms are composed of a first working arm, a second working arm and a third working arm which are sleeved in turn from the outside to the inside, the shapes of the working arms are hexagonal prism shapes, slide boards are arranged between each working arms, the telescopic cylinder is fixed on one end of the first main working arm through a piston rod, a cylinder body is threaded through the second working arm and the third working arm, the sprocket wheel is arranged on the top of the cylinder body of the telescopic cylinder, another sprocket wheel is arranged on the bottom of the second working arm, one end of the driving chain is fixedly installed on the root portion of the third working arm, and the other end rounds the two sprocket wheels in turn and are fixedly installed on the head of the first main working arm finally. The utility model has the advantages of good centering performance, stable and reliable work in extension.
Description
Technical field
The utility model relates to a kind of working arm telescopic system, particularly a kind of working arm telescopic system of high-altitude operation platform.
Background technology
Now, the working arm of the flexible principal arm of high-altitude operation platform all is four side column shape structures basically on the market, this structure in use for some time, owing to continual wearing and tearing have produced the gap, cause working arm poor to neutrality when flexible, rock about working arm is easy, can make that not only the job platform location is inaccurate, the location is unstable, also can aggravate the wearing and tearing of working arm simultaneously, reduce the service life of working arm; Other four side column shape structures can not prevent well that flexible principal arm is carried by side or working arm produces during tilting of car body reverses, and exist certain potential safety hazard, have also reduced the service life of flexible principal arm from another aspect.From the angle of material, the working arm on the market is material with manganese steel mostly, and the yield strength of manganese steel is high not enough, and working arm may produce distortion when work, be unfavorable for safety; The welding performance of manganese steel is also good inadequately in addition, is unfavorable for welding out high-quality working arm.
The utility model content
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, and a kind of good to neutrality when flexible, flexible principal arm of more stable work failure-free high-altitude operation platform is provided.
The technical scheme that the utility model adopted is as follows:
A kind of working arm telescopic system of high-altitude operation platform, described system comprises three layers of working arm, telescopic oil cylinder, sprocket wheel and driving chain, wherein:
Described three layers of sleeve arm comprise from outside to inside the first main working arm, the second joint working arm, the 3rd joint working arm of socket successively, described working arm is shaped as hexagon, be provided with slide plate between each working arm, so that each working arm has better glade plane space when the state of stretching;
Described telescopic oil cylinder saves working arm by an end and its cylinder body that piston rod is fixed in the first main working arm through the second joint working arm and the 3rd, stretch out and contractive action to provide from Hydraulic Pump acquisition power, drive the pulling of driving chain, make the second joint working arm and the 3rd joint working arm stretch out synchronously successively and shrink;
Described sprocket wheel is arranged on the cylinder body top of described telescopic oil cylinder, and is provided with another sprocket wheel in the second joint working arm bottom;
One end of described driving chain is packed in the 3rd joint working arm root, and the other end is walked around two sprocket wheels successively, is packed in the head of the first main working arm at last.
Best, described slide plate is by head and the afterbody of screw retention in each joint working arm, and particular location is distributed in the left-right symmetric position of symmetrical corner inner side place, top, straight flange lower inside left-right symmetric position, two sides and the two hypotenuse inboards, below of described head and afterbody; Described screw is the flathead screw that sinks to sled surface, and described slide plate is provided with and the cooresponding counterbore of described flathead screw.
Best, described slide plate is a high strength oil-containing nylon slide plate.
Best, the cross-sectional plane of described working arm is a hexagon, and concrete shape is
Shape (six prisms), two hypotenuse symmetries of bottom are the arc corner between each adjacent both sides.
Best, described bottom two hypotenuses extend to form the slide ramp of working arm along the working arm length direction.
Best, described working arm is by top
Shape (oblong) frid and bottom
The butt welding of shape (trapezoidal) frid forms.
Best, described working arm is by the first half
Shape (oblong) frid and lower part
Shape (rectangular add trapezoidal) frid butt welding forms.
Best, described working arm is by the left side
Shape (left side rectangular add trapezoidal) frid and right-hand part
Shape (right rectangular add trapezoidal) frid butt welding forms left frid and right frid left-right symmetric.
Best, the material of described frid is the modified high-tensile structural steel HQ70 of low-carbon (LC).
Best, described system can comprise any several layers working arm.
The utility model possesses following beneficial effect with respect to prior art:
(1) because the utility model has adopted the shape of six prisms, about the bottom, formed slide ramp, even make working arm variation take place through abrasion size, also can under the self gravitation effect, utilize the inclined-plane to carry out centering automatically, improved greatly working arm to neutrality;
(2) since improved working arm when flexible to neutrality, make that the location of job platform is more accurate, also more stable;
(3) because the ramp structure of hexagon of the present utility model bottom symmetry makes working arm rock about not meeting, slow down wearing and tearing when work, improved the service life of working arm;
(4) hexagon structure of the present utility model also actv. prevented that flexible principal arm is carried by side or working arm produces during tilting of car body reverses, increased safety factor, also improved the service life of flexible principal arm from another aspect;
(5) owing to adopted the high strength wrought iron, as the material of the modified high-tensile structural steel HQ70 of low-carbon (LC) as working arm, the tensile strength of HQ70 steel is that 700MPa and weldability are good, has improved the welding quality and the anti-surrender ability of working arm, has strengthened the safety of working arm.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further details
Fig. 1 is the utility model cross sectional shape scheme drawing;
Fig. 2 is the utility model stretching structure scheme drawing;
Fig. 3 is first kind of constituted mode scheme drawing of the utility model;
Fig. 4 is second kind of constituted mode scheme drawing of the utility model;
Fig. 5 is the third constituted mode scheme drawing of the utility model.
The specific embodiment
Global shape and structure
The flexible principal arm of high-altitude operation platform as shown in Figure 1 comprises three joint working arms altogether, and wherein the second joint working arm 2 places in groundwork arm 1 body, and the 3rd joint working arm 3 places in the second joint working arm, 2 bodies.This three joints working arm global shape is hexagon, and its cross-sectional plane is non-regular hexagonal, and concrete shape is
Shape (six prisms) is just cut away its shape behind two right angles of bottom as same oblong.Two hypotenuse left-right symmetric of bottom, and be the arc corner between each adjacent both sides, bottom two hypotenuses extend to form the slide ramp of working arm along the working arm length direction.Be provided with slide plate between the groundwork arm and the second joint working arm and between the second joint working arm and the 3rd joint working arm in addition, these slide plates make working arm have better glade plane space when the state of stretching.
As shown in Figure 2, the piston rod of telescopic oil cylinder 5 is located at groundwork arm 1 root, and cylinder body is located on the second joint working arm 2, is provided with sprocket wheel 8 at the cylinder body top of telescopic oil cylinder 5, is provided with sprocket wheel 6 in the second joint working arm, 2 bottoms; One end of driving chain 7 is packed in the 3rd joint working arm 3 roots, and the other end is walked around sprocket wheel 8 and sprocket wheel 6 successively, is packed in the head of groundwork arm 1 at last.By the stretching out and shrink of the telescopic oil cylinder 5 in the groundwork arm 1, drive the pulling of chain 7, make the second joint working arm 2 and the 3rd save working arm 3 and stretch out synchronously successively and shrink.
First kind of embodiment:
As shown in Figure 3, according to first kind of embodiment of the present utility model, by the position of weld seam among the figure 9 as can be seen, each saves working arm by top
Shape (oblong) frid and bottom
The butt welding of shape (trapezoidal) frid forms.The material of wherein said frid is the high strength wrought iron, as the modified high-tensile structural steel HQ70 of low-carbon (LC).The characteristics of this high strength wrought iron are the yield strength height, are higher than manganese steel in the market commonly used to a great extent, and its welding performance also be manganese steel or other kind steel can not than.The process of welding adopts advanced at present single face welding and double face shaping technology, and (characteristics of this technology are: during welding, one face down bonding connects, form weld seam preferably at the sheet material opposite side, making does not need welding fabrication once more), utilize the full automaticity welding manipulator to carry out welding operation, guarantee that welding quality stable is reliable.Respectively save in addition and be provided with slide plate 4 between the working arm, these slide plates 4 are by head and the afterbody of screw retention in each joint working arm, and particular location is distributed in the left-right symmetric position of symmetrical corner inner side place, top, straight flange lower inside left-right symmetric position, two sides and the two hypotenuse inboards, below of working arm head and afterbody; And screw is a flathead screw, sinks to slide plate 4 surfaces after installing fully, and slide plate 4 is provided with and the cooresponding counterbore of above-mentioned flathead screw.All slide plates 4 all adopt high-intensity oil-containing nylon slide plate.More than the setting of these slide plates 4, can work reposefully on job platform to guarantee operating personal so that working arm when flexible state, has glade plane space preferably.As seen from Figure 2, control the flexible telescoping mechanism of above working arm and comprise telescopic oil cylinder 5, driving chain 7, sprocket wheel 6 and sprocket wheel 8, the piston rod of telescopic oil cylinder 5 is located at groundwork arm 1 root, cylinder body is located on the second joint working arm 2, cylinder body top at telescopic oil cylinder 5 is provided with sprocket wheel 8, is provided with sprocket wheel 6 in the second joint working arm, 2 bottoms; One end of driving chain 7 is packed in the 3rd joint working arm 3 roots, and the other end is walked around sprocket wheel 8 and sprocket wheel 6 successively, is packed in the head of groundwork arm 1 at last.Telescopic oil cylinder 5 obtains power from Hydraulic Pump and stretches out and shrink, thereby drives the pulling of chain 7, makes the second joint working arm 2 and the 3rd joint working arm 3 stretch out synchronously successively and shrink.
Second kind of embodiment:
As shown in Figure 4, according to second kind of embodiment of the present utility model, working arm is wherein respectively saved as can be seen by the first half in the position of weld seam 9 from figure
Shape (oblong) frid and lower part
Shape (rectangular add trapezoidal) frid butt welding forms.The material of wherein said frid is the high strength wrought iron.The characteristics of this high strength wrought iron are the yield strength height, are higher than manganese steel in the market commonly used to a great extent, and its welding performance also be manganese steel or other kind steel can not than.The process of welding adopts advanced at present single face welding and double face shaping technology, utilizes the full automaticity welding manipulator to carry out welding operation, guarantees that welding quality stable is reliable.Respectively save in addition and be provided with slide plate 4 between the working arm, these slide plates 4 are by head and the afterbody of screw retention in each joint working arm, and particular location is distributed in the left-right symmetric position of symmetrical corner inner side place, top, straight flange lower inside left-right symmetric position, two sides and the two hypotenuse inboards, below of working arm head and afterbody; And screw is a flathead screw, sinks to slide plate 4 surfaces after installing fully, and slide plate 4 is provided with and the cooresponding counterbore of above-mentioned flathead screw.All slide plates 4 all adopt high-intensity oil-containing nylon slide plate.More than the setting of these slide plates 4, can be so that working arm when flexible state, has glade plane space preferably, with guarantee operating personal on job platform steadily, work safely.
As seen from Figure 2, control the flexible telescoping mechanism of above working arm and comprise telescopic oil cylinder 5, driving chain 7, sprocket wheel 6 and sprocket wheel 8, the piston rod of telescopic oil cylinder 5 is located at groundwork arm 1 root, cylinder body is located on the second joint working arm 2, cylinder body top at telescopic oil cylinder 5 is provided with sprocket wheel 8, is provided with sprocket wheel 6 in the second joint working arm, 2 bottoms; One end of driving chain 7 is packed in the 3rd joint working arm 3 roots, and the other end is walked around sprocket wheel 8 and sprocket wheel 6 successively, is packed in the head of groundwork arm 1 at last.Telescopic oil cylinder 5 obtains power from Hydraulic Pump and stretches out and shrink, thereby drives the pulling of chain 7, makes the second joint working arm 2 and the 3rd joint working arm 3 stretch out synchronously successively and shrink.
The third embodiment:
As shown in Figure 5, according to the third embodiment of the present utility model, the position of weld seam 9 can be found out from figure, and each saves working arm by the left side
Shape (left side rectangular add trapezoidal) frid and right-hand part
The frid butt welding forms shape (right rectangular add trapezoidal), and left frid and right frid left-right symmetric.The material of wherein said frid is the high strength wrought iron.The characteristics of this high strength wrought iron are the yield strength height, are higher than manganese steel in the market commonly used to a great extent, and its welding performance also be manganese steel or other kind steel can not than.The process of welding adopts advanced at present single face welding and double face shaping technology, utilizes the full automaticity welding manipulator to carry out welding operation, guarantees that welding quality stable is reliable.Respectively save in addition and be provided with slide plate 4 between the working arm, these slide plates 4 are by head and the afterbody of screw retention in each joint working arm, and particular location is distributed in the left-right symmetric position of symmetrical corner inner side place, top, straight flange lower inside left-right symmetric position, two sides and the two hypotenuse inboards, below of working arm head and afterbody; And screw is a flathead screw, sinks to slide plate 4 surfaces after installing fully, and slide plate 4 is provided with and the cooresponding counterbore of above-mentioned flathead screw.All slide plates 4 all adopt high-intensity oil-containing nylon slide plate.More than the setting of these slide plates 4, can be so that working arm when flexible state, has glade plane space preferably, with guarantee operating personal on job platform steadily, implementation and operation safely.
As seen from Figure 2, control the flexible telescoping mechanism of above working arm and comprise telescopic oil cylinder 5, driving chain 7, sprocket wheel 6 and sprocket wheel 8, the piston rod of telescopic oil cylinder 5 is located at groundwork arm 1 root, cylinder body is located on the second joint working arm 2, cylinder body top at telescopic oil cylinder 5 is provided with sprocket wheel 8, is provided with sprocket wheel 6 in the second joint working arm, 2 bottoms; One end of driving chain 7 is packed in the 3rd joint working arm 3 roots, and the other end is walked around sprocket wheel 8 and sprocket wheel 6 successively, is packed in the head of groundwork arm 1 at last.Telescopic oil cylinder 5 obtains power from Hydraulic Pump and stretches out and shrink, thereby drives the pulling of chain 7, makes the second joint working arm 2 and the 3rd joint working arm 3 stretch out synchronously successively and shrink.
Certainly, respectively the saving working arm and also can adopt different constituted modes of same flexible principal arm of the present utility model adopted top such as the groundwork arm
Shape (oblong) frid and bottom
The butt welding of shape (trapezoidal) frid forms, and the second joint working arm then can adopt the first half
Shape (oblong) frid and lower part
Shape (rectangular add trapezoidal) frid butt welding forms, and the 3rd joint working arm adopts the left side
Shape (left side rectangular add trapezoidal) frid and right-hand part
Shape (right rectangular add trapezoidal) frid butt welding forms; Perhaps the groundwork arm adopts the left side
Shape (left side rectangular add trapezoidal) frid and right-hand part
Shape (right rectangular add trapezoidal) frid butt welding forms, and the second joint working arm adopts top
Shape (oblong) frid and bottom
The butt welding of shape (trapezoidal) frid forms, and the 3rd joint working arm then selects to adopt the first half
Shape (oblong) frid and lower part
Shape (rectangular add trapezoidal) frid butt welding forms; Perhaps the groundwork arm adopts a certain identical constituted mode with the second joint working arm, and the 3rd joint working arm adopts another kind of constituted mode, or the like.That is to say that this three joints working arm can be taked the permutation and combination of various different constituted modes, specifically adopts which kind of mode to decide according to builder's needs fully.As a rule, consider that each working arm is suitable to be adopted with a kind of constituted mode, can simplify production process like this, reduces production costs from the preparation of material and the angle of mass production.
Describe a plurality of embodiment of the present invention in detail above, but top embodiment only is to of the present invention schematically illustrating and unrestricted the present invention with reference to accompanying drawing.In addition, those skilled in the art can make various modifications and variations to the present invention after having read above-mentioned explanation, and this modifications and variations also drop within protection scope of the present invention.
Claims (13)
1, a kind of working arm telescopic system of high-altitude operation platform, described system comprises three layers of working arm (1,2,3), telescopic oil cylinder (5), sprocket wheel (6,8) and driving chain (7), it is characterized in that:
First of the socket main working arm (1), the second joint working arm (2), the 3rd joint working arm (3) constitute described three layers of sleeve arm (1,2,3) successively from outside to inside, described working arm is shaped as hexagon, be provided with slide plate between each working arm, so that each working arm has better glade plane space when the state of stretching;
Described telescopic oil cylinder (5) saves working arm (3) by an end and its cylinder body (52) that piston rod (51) is fixed in the first main working arm (1) through the second joint working arm (2) and the 3rd, stretch out and contractive action to provide from Hydraulic Pump acquisition power, drive the pulling of driving chain (7), make the second joint working arm and the 3rd joint working arm stretch out synchronously successively and shrink;
Described sprocket wheel (6) is arranged on the cylinder body top of described telescopic oil cylinder, and is provided with another sprocket wheel in second joint working arm (2) bottom;
One end of described driving chain (7) is packed in the 3rd joint working arm (3) root, and the other end is walked around two sprocket wheels successively, is packed in the head of the first main working arm (1) at last.
2, working arm telescopic system as claimed in claim 1 is characterized in that, described slide plate is by head and the afterbody of screw retention in each joint working arm.
3, working arm telescopic system as claimed in claim 2 is characterized in that, described screw is the flathead screw that sinks to sled surface.
4, working arm telescopic system as claimed in claim 2, it is characterized in that the left-right symmetric position of the symmetrical corner inner side in the top of described head and afterbody place, straight flange lower inside left-right symmetric position, two sides and two hypotenuse inboards, below.
5, working arm telescopic system as claimed in claim 1 or 2 is characterized in that, described slide plate is a high strength oil-containing nylon slide plate.
6, working arm telescopic system as claimed in claim 1 or 2 is characterized in that, described slide plate is provided with and the cooresponding counterbore of described flathead screw.
7, working arm telescopic system according to claim 1 is characterized in that: the cross-sectional plane of described working arm is a hexagon, and its shape is hexagon, and two hypotenuse symmetries of bottom are the arc corner between each adjacent both sides.
8, working arm telescopic system according to claim 7 is characterized in that: described bottom two hypotenuses extend to form the slide ramp of working arm along the working arm length direction.
9, according to claim 1 or 7 described working arm telescopic systems, it is characterized in that: described working arm is formed by the oblong frid on top and the trapezoidal frid butt welding of bottom.
10, according to claim 1 or 7 described working arm telescopic systems, it is characterized in that: described working arm adds trapezoidal frid butt welding by the oblong frid of the first half and lower part rectangular and forms.
11, according to claim 1 or 7 described working arm telescopic systems, it is characterized in that: described working arm right is rectangularly added trapezoidal frid butt welding and forms left frid and right frid left-right symmetric by what left side left rectangular added trapezoidal frid and right-hand part.
12, according to each described working arm telescopic system in the claim 9～11, it is characterized in that: the material of described frid is the modified high-tensile structural steel HQ70 of low-carbon (LC).
13, working arm telescopic system as claimed in claim 1 is characterized in that: described system can comprise any several layers working arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201778701U CN201161910Y (en) | 2007-10-16 | 2007-10-16 | Operation arm expansion system of platform for work high above ground |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201778701U CN201161910Y (en) | 2007-10-16 | 2007-10-16 | Operation arm expansion system of platform for work high above ground |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201161910Y true CN201161910Y (en) | 2008-12-10 |
Family
ID=40182851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201778701U Expired - Fee Related CN201161910Y (en) | 2007-10-16 | 2007-10-16 | Operation arm expansion system of platform for work high above ground |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201161910Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102730593A (en) * | 2011-04-11 | 2012-10-17 | 大连起重矿山机械有限公司 | Dredged slag lifting mechanism of aluminum electrolysis hoisting equipment |
| CN106395698A (en) * | 2016-09-06 | 2017-02-15 | 浙江鼎力机械股份有限公司 | Big arm with unequal thickness and aloft work platform |
| CN106430017A (en) * | 2016-08-24 | 2017-02-22 | 浙江鼎力机械股份有限公司 | Telescopic transmission assembly and aerial work platform |
| CN113173518A (en) * | 2021-05-19 | 2021-07-27 | 山东华樱轨道装备有限公司 | Car lifting jack for truck body |
| CN116101918A (en) * | 2023-03-06 | 2023-05-12 | 临工重机股份有限公司 | Arm support and overhead working truck |
-
2007
- 2007-10-16 CN CNU2007201778701U patent/CN201161910Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102730593A (en) * | 2011-04-11 | 2012-10-17 | 大连起重矿山机械有限公司 | Dredged slag lifting mechanism of aluminum electrolysis hoisting equipment |
| CN106430017A (en) * | 2016-08-24 | 2017-02-22 | 浙江鼎力机械股份有限公司 | Telescopic transmission assembly and aerial work platform |
| CN106395698A (en) * | 2016-09-06 | 2017-02-15 | 浙江鼎力机械股份有限公司 | Big arm with unequal thickness and aloft work platform |
| CN113173518A (en) * | 2021-05-19 | 2021-07-27 | 山东华樱轨道装备有限公司 | Car lifting jack for truck body |
| CN116101918A (en) * | 2023-03-06 | 2023-05-12 | 临工重机股份有限公司 | Arm support and overhead working truck |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201161910Y (en) | Operation arm expansion system of platform for work high above ground | |
| CN208632940U (en) | A kind of assembling type steel structure arch bridge | |
| CN203201562U (en) | Shield tunneling machine initial counter-force frame convenient to detach, install and transport | |
| CN204282192U (en) | A kind of double deck steel truss girder | |
| CN106334861A (en) | Construction method for single-side fusion-through welding of connection angle seams of closed longitudinal ribs and bridge deck slab | |
| CN103015309A (en) | Integral joint steel structure door type pier | |
| CN105332540B (en) | A kind of self-propelled high-tension line rapid rush-repair tower | |
| CN103306696A (en) | Self-moving roadway advance support bracket | |
| CN202672022U (en) | Large span modularized aluminium alloy foot bridge with single span of 30 meters -60 meters | |
| CN104727213B (en) | Assembly type steel reinforced concrete arch bridge T beam slab | |
| CN208396009U (en) | A kind of steel structure connection component being easily installed connection | |
| CN105040579A (en) | Bridge pier coating warning board and construction method thereof | |
| CN207739471U (en) | A kind of double-layer curtain wall connection component | |
| CN204959590U (en) | Pier application warning sign | |
| CN105696718A (en) | Novel buckling energy consumption prevention pipe and manufacturing technology thereof | |
| CN105221166A (en) | Upstriker large span contains tunnel outer mould liner platform building cart | |
| CN105386634B (en) | A kind of high-tension line rapid rush-repair tower | |
| CN203764331U (en) | Wear-resistant hammer for breaking materials | |
| CN204212059U (en) | A kind of dilatory with large span heavy duty slipway beam | |
| CN208449576U (en) | A kind of hydraulic engineering lithotripsy apparatus | |
| CN208309832U (en) | A kind of connection structure of Novel steel pipe concrete pole and girder steel | |
| CN202610699U (en) | Modularization aluminium alloy footbridge structure | |
| CN109667349A (en) | Full prefabricated PC concrete frame structure shock-resistant node | |
| CN207761052U (en) | A kind of girder steel and steel column connecting node | |
| CN202610698U (en) | Medium and small span modularization aluminum pedestrian bridge within single span of 30 m |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081210 Termination date: 20121016 |