CN103161390A - Large self-balancing type safe and labor-saving cover plate device - Google Patents
Large self-balancing type safe and labor-saving cover plate device Download PDFInfo
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- CN103161390A CN103161390A CN2011104268542A CN201110426854A CN103161390A CN 103161390 A CN103161390 A CN 103161390A CN 2011104268542 A CN2011104268542 A CN 2011104268542A CN 201110426854 A CN201110426854 A CN 201110426854A CN 103161390 A CN103161390 A CN 103161390A
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Abstract
The invention discloses a large self-balancing type safe and labor-saving cover plate device which is used for being arranged at a lifting opening of floor slabs, and a framework is arranged around the lifting opening. The large self-balancing type safe and labor-saving cover plate device comprises a pair of guide rails, multiple cover plates and a lifting device, wherein the guide rails are respectively arranged on two opposite sides of the lifting opening, one end of each of the pair of guide rails is connected with the framework in a pivoted mode, the multiple cover plates are movably supported on the pair of guide rails, and the cover plates have an unfolded state and a folded state. The lifting device is used for lifting and descending the other end of each of the pair of guide rails so that the multiple cover plates are enabled to be switched between the unfolded state and the folded state. According to the large self-balancing type safe and labor-saving cover plate device, through the change of the rotation angles of the guide rails relative to the framework, a purpose of adjusting the gravity centers of the cover plates is achieved, and therefore the heavy cover plates can be opened and closed through utilization of self weights of the cover plates without the need of any additional auxiliary devices, the manufacturing cost is lowered, the problem that long cover plates cannot be manufactured on the principle that the folded cover plates only rely on counterweight is solved, and the operation process is enabled to be simpler and more convenient.
Description
Technical field
The present invention relates to be arranged on the cover board arrangement of the hoisting port of building floor.
Background technology
For safety, the hoisting port on building floor all is provided with cover plate and safety barrier usually.For the cover plate of ordinary construction, the height that cover plate erects is determined by the openings of sizes of hoisting port.When opening was larger, cover plate can be higher, just must hang De Genggao to equipment during hanging device.And in the situation that story height is limited, the cover board arrangement of ordinary construction can't be used for having the hoisting port of larger opening.In order to satisfy large opening hoisting port for the requirement of hoisting height, people have designed folding cover plate, but this folding cover plate still has following shortcoming:
1. existing folding cover plate must rely on self counterweight to open and close, and when opening, the speed that cover plate is opened can be more and more faster, and this is all constantly to accelerate to cause under the effect of inertia due to cover plate and weight.And when the opening of hoisting port was larger, for fear of causing the shock that accelerates to cause can only adopt the way that reduces weight, so folding cover plate did and to get the larger balance that just more is not easy, and the pulling force that needs when opening is also just larger.Therefore from then on the existing folding cover plate of angle just can not be done too greatly on principle;
2. existing folding cover plate must be opened by special cover opening device, operates comparatively complicated, and have potential safety hazard in the opening procedure of cover plate;
3. existing folding cover plate can only lean on the intensity of cover plate itself to support load-carrying, and is therefore all inapplicable for wider and long hoisting port.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of folding cover panel assembly that large opening hoisting port uses, also can open quickly and easily cover plate that is applicable to.
The technical solution adopted in the present invention is: large-scale self-balancing type safe labor-saving cover board arrangement, for the hoisting port that is arranged on building floor, be provided with framework around hoisting port, and this cover board arrangement comprises:
Pair of guide rails is arranged at respectively described hoisting port relative both sides, an end of this pair of guide rails and framework pivot joint;
The polylith cover plate is bearing on pair of guide rails movably; This polylith cover plate has deployed condition and folded state;
Lifting device is for the other end of lifting pair of guide rails, so that this polylith cover plate is changed between deployed condition and folded state.
After adopting technique scheme, the present invention compared with prior art has the following advantages:
1. play the effect of adjusting cover plate center of gravity with respect to the rotational angle of framework by changing guide rail, thereby can rely on the deadweight of cover plate to open and close heavy cover plate, and without any need for extra auxiliary equipment, reduced manufacturing cost, also solved pure folding cover plate by counterweight and can not do the problem of the cover plate of big-length on principle, and made operating process easier.In addition, the whole process that cover plate is opened is all fool proof, has eliminated the hidden danger that personnel and instrument drop;
2. owing to having adopted beam structure, the load-bearing of cover plate on guide rail, therefore can be applicable to wider and long hoisting port by beam supporting;
3. between initiating terminal cover plate and adjacent main cover plate and be provided with between adjacent every two pairs of main cover plates and synchronize connector, be provided with synchronous rotary mechanism between every a pair of main cover plate, like this, all cover plates can synchronously be opened, pulling open the initiating terminal cover plate just can remaining all cover plate of pull-up, makes whole cover plate open and close process fast smooth;
4. because the polylith cover plate has adopted accordion structure, formed height when all cover plates are opened, the height of a cover plate wherein just, thus make the present invention when being used for having the hoisting port of larger opening, also can satisfy the requirement of hoisting height.
Description of drawings
Fig. 1 shows the perspective view of folding cover panel assembly and hoisting port framework according to an embodiment of the invention.
Fig. 2 is the schematic side view of Fig. 1.
Fig. 3 is the schematic side view according to the folding cover panel assembly of further embodiment of this invention, and wherein, this folding cover panel assembly is in deployed condition.
Fig. 4 is the schematic side view according to the folding cover panel assembly of further embodiment of this invention, and wherein, this folding cover panel assembly is in by deployed condition in the process of folded state conversion.
Fig. 5 is the schematic side view according to the folding cover panel assembly of further embodiment of this invention, and wherein, this folding cover panel assembly is in folded state.
Fig. 6 is the schematic top plan view of a pair of main cover plate according to an embodiment of the invention.
Fig. 7 is the cross-sectional schematic of a pair of main cover plate according to an embodiment of the invention, and wherein, this a pair of main cover plate is in deployed condition.
Fig. 8 is the schematic side view of a pair of main cover plate according to an embodiment of the invention, and wherein, this a pair of main cover plate is in by deployed condition in the process of folded state conversion.
Fig. 9 is the schematic side view of a pair of main cover plate according to an embodiment of the invention, and wherein, this a pair of main cover plate is in folded state.
Figure 10 is the schematic perspective view of lazy-tongs according to an embodiment of the invention.
Figure 11 shows many according to an embodiment of the invention to main cover plate, wherein, this many to main cover plate by deployed condition in the process of folded state conversion.
Figure 12 is that the master of synchronous connector according to an embodiment of the invention looks schematic diagram.
Figure 13 is the schematic top plan view of synchronous according to an embodiment of the invention connector.
Figure 14 is the cross-sectional schematic of synchronous according to an embodiment of the invention connector.
The master that Figure 15 shows according to an embodiment of the invention synchronous connector looks schematic diagram, and at this moment, this synchronous connector is in the state that rotates with cover plate.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is made and further illustrating.
Fig. 1 and Fig. 2 show the rectangle hoisting port 100 that is arranged on building floor.Be provided with framework 200 around this hoisting port, this framework has first side 210, Second Edge 220, the 3rd limit 230 and the 4th limit 240, and first side 210 is relative with Second Edge 220, and the 3rd limit 230 is relative with the 4th limit 240.Respectively be provided with one group of folding cover panel assembly 300 in the both sides of hoisting port 100, be provided with the side rail (not shown) that can freely rise and fall in the other both sides of hoisting port.When two groups of above-mentioned folding cover panel assemblies all were in closed condition, side rail can be on the cover board, thereby whole hoisting port 100 can be covered; When two groups of above-mentioned folding cover panel assemblies 300 all were in opening, cover plate and side rail were all erect, thereby formed safety barrier.
With reference to figure 3 to Fig. 5.The folding cover panel assembly comprises pair of guide rails 1, polylith cover plate and lifting device according to an embodiment of the invention.Pair of guide rails 1 is arranged at respectively hoisting port relative both sides, and in Fig. 1, wherein the first side 210 of guide rail and framework is in the same side, and the Second Edge 220 of another root guide rail and framework is in the same side.The 3rd limit 230 of framework is provided with a pair of bearing 231, and an end of each root guide rail 1 is by a pivot 232 and corresponding bearing 231 pivot joints.The polylith cover plate is bearing on pair of guide rails 1 movably, and preferably, the polylith cover plate rollably is bearing on pair of guide rails 1 by roller.This polylith cover plate has deployed condition and folded state, and when this polylith cover plate was positioned at deployed condition, this polylith cover plate was positioned on same level, as shown in Figure 3; When this polylith cover plate was positioned at folded state, this polylith cover plate was upwards erect, as shown in Figure 5.Lifting device is used for the other end of lifting pair of guide rails 1, so that this polylith cover plate is changed between deployed condition and folded state.In illustrated embodiment, this lifting device is for being used for a pair of hydraulic jack 2 of the other end of lifting pair of guide rails 1 respectively, guide rail 1 adopts box beam, this box beam has a centre bore, be provided with a support column 12 in this centre bore, this support column 12 is fixed with welding box beam, and an end 121 of support column 12 stretches out in outside box beam, hydraulic jack 2 is arranged at the below of support column 12, and is resisted against the bottom surface of an end 121 of this support column 12.
Above-mentioned polylith cover plate comprises an initiating terminal cover plate 31 and at least one pair of main cover plate 32.Initiating terminal cover plate 31 comprises relative first side 311 and Second Edge 312.The 3rd limit 230 of framework is provided with at least one bearing 233, the first side 311 of initiating terminal cover plate 31 is provided with extend, linking arm 315 that equate with the number of bearing 233 laterally, and the linking arm 315 of initiating terminal cover plate is articulated by pivot with the bearing 233 of framework.Interconnect rotationally between the Second Edge 312 of initiating terminal cover plate and adjacent main cover plate and between two adjacent main cover plates of adjacent every two pairs of main cover plates.In Fig. 1 and Fig. 2, every group of folding cover panel assembly 300 is provided with an initiating terminal cover plate 31 and three pairs of main cover plates 32.In Fig. 3 and Fig. 4, for the purpose of simplifying the description, show the example that an initiating terminal cover plate 31 and a pair of main cover plate 32 are set.In actual use, the size of the logarithm of main cover plate and every a pair of main cover plate can be adjusted with length and the width of hoisting port.
To shown in Figure 10, every a pair of main cover plate 32 comprises main cover plate 322 after a front main cover plate 321 and, is provided with a crossbeam 4 between front main cover plate 321 and rear main cover plate 322 in conjunction with Fig. 6, front main cover plate be connected main cover plate and be connected with crossbeam 4 rotationally.The left and right sides of crossbeam 4 is respectively equipped with one group of roller, and every group of roller is included in a pair roller 51 that rolls on guide rail 1 upper surface and a pair roller 52 that rolls on guide rail 1 soffit.
In one embodiment, front main cover plate 321 is connected with crossbeam 4 by main cover plate rotating mechanism before at least one, and rear main cover plate 322 is connected with crossbeam by main cover plate rotating mechanism after at least one.In the embodiment of Fig. 6, before front main cover plate 321 passes through four, main cover plate rotating mechanism is connected with crossbeam 4, and after rear main cover plate 322 passes through four, main cover plate rotating mechanism is connected with crossbeam.Front main cover plate rotating mechanism and rear main cover plate rotating mechanism include the first gear shaft 601, the second gear shaft 602, the first gear 611, the second gear 612, gear stand 620 and weight arm 630.Gear stand 620 is fixed on crossbeam 4, and the first gear shaft 601 and the second gear shaft 602 are bearing on gear stand 620 up and down abreast.The first gear 611 is arranged on the first gear shaft 601, and is fixed in main cover plate near an end of crossbeam 4; The second gear 612 is taken turns and is arranged on the second gear shaft 602, and is fixed in weight arm 630 near an end of crossbeam; The first gear 611 and the second gear 612 are intermeshing, and preferably, the gearratio of this first gear 611 and the second gear 612 is 1:1.For the ease of with being connected of the first gear 611, front main cover plate 321 and rear main cover plate 322 are equipped with, linking arm 323 that with the number of gear stand 620 equate that extend to the crossbeam side near an end of crossbeams.The side of the first gear 611 and this linking arm 323 are welded to connect.For the ease of with being connected of the second gear 612, weight arm 630 offers groove 631 near the upper surface of an end of crossbeams, gear 612 is arranged in this groove 631, and is welded to connect with weight arm 630.Weight arm 630 can play the effect of balance center of gravity as counterweight when main cover plate upwards rotates or rotates.
Preferably, front main cover plate rotating mechanism and rear main cover plate rotating mechanism are arranged on the both sides, front and back of crossbeam 4 symmetrically.The weight arm of the weight arm of front main cover plate rotating mechanism and rear main cover plate rotating mechanism is synchronizeed mechanism by one and is interconnected.These lazy-tongs comprise gear support 640, the 3rd gear shaft 653, the 4th gear shaft 654, the 3rd gear 663, the 4th gear 664, first connecting rod 671, second connecting rod 672, third connecting rod 673 and the 4th connecting rod 674.Gear support 640 is fixed on crossbeam 4 bottoms.The 3rd gear shaft 653 and the 4th gear shaft 654 are bearing on gear support 640 side by side.One end of the 3rd gear 663 and first connecting rod 671 is enclosed within on the 3rd gear shaft 653, and can synchronously rotate; One end of the 4th gear 664 and second connecting rod 672 is set on the 4th gear shaft 654, and can synchronously rotate.The 3rd gear 663 and the 4th gear 664 are intermeshing, and preferably, the gearratio of the 3rd gear 663 and the 4th gear 664 is 1:1.In a kind of preferred embodiment, an end of the side of the 3rd gear 663 and first connecting rod 671 is welded to connect, and an end of the side of the 4th gear 664 and second connecting rod 672 is welded to connect.One end of the other end of first connecting rod 671 and third connecting rod 673 is by pivot 681 pivot joints, and the weight arm 630 of the other end of third connecting rod 673 and front main cover plate rotating mechanism is by pivot 683 pivot joints; One end of the other end of second connecting rod 672 and the 4th connecting rod 674 is by pivot 682 pivot joints, and the other end of the 4th connecting rod 674 is by weight arm 630 pivot joints of pivot 684 with rear main cover plate rotating mechanism.Above-mentioned first connecting rod 671, second connecting rod 672, third connecting rod 673 and the 4th connecting rod 674 form by two strip plates that are parallel to each other, the 3rd gear 663 is between two block length battens of first connecting rod 671, and the 4th gear 664 is between two block length battens of second connecting rod 672.
Preferably, first connecting rod 671 and second connecting rod 672 are arranged on crossbeam 4 both sides symmetrically, and third connecting rod 673 and the 4th connecting rod 674 are arranged on crossbeam 4 both sides symmetrically.
In a kind of preferred embodiment, be all to synchronize by at least one to be provided with four synchronous connectors 7 in the embodiment of connector 7(Fig. 1 between the Second Edge 312 of initiating terminal cover plate 31 and adjacent main cover plate and between two adjacent main cover plates of adjacent every two pairs of main cover plates) interconnect rotationally.Please refer to Figure 11 to Figure 15, synchronous connector 7 comprises the pair of side plates 711,712 that is oppositely arranged, the first gear junction plate 721, the second gear junction plate 722, the 5th gear shaft 735, the 6th gear shaft 736 and intermeshing together the 5th gear 745 and the 6th gear 746.Preferably, the gearratio of the 5th gear 745 and the 6th gear 746 is 1:1.The 5th gear shaft 735 and the 6th gear shaft 736 are arranged side by side on this pair of side plates 711,712.The first gear junction plate 721, the second gear junction plate 722, the 5th gear 745 and the 6th gear 746 and are separately fixed at two adjacent ends of adjacent two cover plates between this pair of side plates 711 and 712.The first gear junction plate 721 and the 5th gear 745 are set on the 5th gear shaft 735, and the 5th gear 745 is fixed on the side of this first gear junction plate 721 by the mode of welding.The second gear junction plate 722 and the 6th gear 746 are set on the 6th gear shaft 736, and the 6th gear 746 is fixed on the side of this second gear junction plate 722 by the mode of welding.
In another embodiment, also the first and second gear junction plates can be set, and with the 5th gear 745 directly with adjacent two cover plates in a cover plate be welded to connect, the 6th gear 746 directly with adjacent two cover plates in another piece cover plate be welded to connect.The circle section of lacking can be set on the 5th gear 745 and the 6th gear 746 this moment.
As shown in Figure 4, when needs are opened the polylith cover plate, by hydraulic jack 2 end 121 of jack-up support column 12 upwards, this pair of guide rails 1 is upwards swung around pivot 232, this moment, the upper surface of guide rail 1 was a left low right high inclined-plane, the polylith cover plate is moved to the left under the impact of deadweight, thereby makes the polylith cover plate be converted to folded state by deployed condition, as shown in Figure 5.When needs polylith cover plate is closed, hydraulic jack 2 is retracted, and an end 121 of support column 12 is descended, make this pair of guide rails 1 around pivot 232 to lower swing, this moment, the polylith cover plate moved right under the impact of deadweight, thereby made the polylith cover plate be converted to deployed condition by folded state.
Claims (9)
1. large-scale self-balancing type safe labor-saving cover board arrangement, for the hoisting port that is arranged on building floor, be provided with framework around described hoisting port, it is characterized in that, this cover board arrangement comprises:
Pair of guide rails is arranged at respectively described hoisting port relative both sides, an end of this pair of guide rails and described framework pivot joint;
The polylith cover plate is bearing on described pair of guide rails movably; Described polylith cover plate has deployed condition and folded state;
Lifting device is for the other end of the described pair of guide rails of lifting, so that this polylith cover plate is changed between deployed condition and folded state.
2. cover board arrangement as claimed in claim 1, is characterized in that, described polylith cover plate comprises an initiating terminal cover plate and at least one pair of main cover plate;
Described initiating terminal cover plate comprises relative first side and Second Edge, the first side of initiating terminal cover plate and described framework pivot joint interconnect between the Second Edge of initiating terminal cover plate and adjacent main cover plate and between two adjacent main cover plates of adjacent every two pairs of main cover plates rotationally;
Every a pair of described main cover plate comprises main cover plate after a front main cover plate and, and this front main cover plate be provided with a crossbeam between main cover plate afterwards with this, described front main cover plate be connected main cover plate and be connected with this crossbeam rotationally; The left and right sides of this crossbeam is respectively equipped with one group of roller.
3. cover board arrangement as claimed in claim 2, is characterized in that, described front main cover plate is connected with this crossbeam by main cover plate rotating mechanism before at least one, and described rear main cover plate is connected with this crossbeam by main cover plate rotating mechanism after at least one;
Described front main cover plate rotating mechanism and rear main cover plate rotating mechanism include gear stand, the first gear shaft, the second gear shaft, the first gear, the second gear and weight arm;
Described gear stand is fixed on crossbeam; Described the first gear shaft and the second gear shaft are bearing on described gear stand up and down abreast, and described the first gear is arranged on the first gear shaft, and are fixed in main cover plate near an end of crossbeam; Described the second gear is arranged on the second gear shaft, and is fixed in weight arm near an end of crossbeam; The first gear and the second gear are intermeshing.
4. cover board arrangement as claimed in claim 3, is characterized in that, described front main cover plate rotating mechanism and described rear main cover plate rotating mechanism are arranged on the both sides, front and back of crossbeam symmetrically; The weight arm of the weight arm of front main cover plate rotating mechanism and rear main cover plate rotating mechanism is synchronizeed mechanism by one and is interconnected;
Described lazy-tongs comprise gear support, the 3rd gear shaft, the 4th gear shaft, the 3rd gear, the 4th gear, first connecting rod, second connecting rod, third connecting rod and the 4th connecting rod;
Described gear support is fixed on bottom crossbeam; Described the 3rd gear shaft and the 4th gear shaft are bearing on described gear support side by side; One end of described the 3rd gear and first connecting rod is enclosed within on the 3rd gear shaft, and can synchronously rotate; One end of described the 4th gear and second connecting rod is set on the 4th gear shaft, and can synchronously rotate; The 3rd gear and the 4th gear are intermeshing; One end pivot joint of the other end of described first connecting rod and third connecting rod, the weight arm pivot joint of the other end of third connecting rod and front main cover plate rotating mechanism; One end pivot joint of the other end of described second connecting rod and described the 4th connecting rod, the weight arm pivot joint of the other end of the 4th connecting rod and rear main cover plate rotating mechanism.
5. cover board arrangement as claimed in claim 4, is characterized in that, described first connecting rod and second connecting rod are arranged on crossbeam both sides symmetrically, and described third connecting rod and the 4th connecting rod are arranged on crossbeam both sides symmetrically;
Described the 3rd gear is connected with an end of described first connecting rod, and the 4th gear is connected with an end of described second connecting rod.
6. cover board arrangement as claimed in claim 2, is characterized in that, every group of roller is included in a pair roller that rolls on guide rail upper surface and a pair roller that rolls on the guide rail soffit.
7. cover board arrangement as described in any one in claim 2 to 6, it is characterized in that, be all to synchronize connector by at least one to interconnect rotationally between the Second Edge of initiating terminal cover plate and adjacent main cover plate and between two adjacent main cover plates of adjacent every two pairs of main cover plates;
Each described synchronous connector comprises the pair of side plates that is oppositely arranged, the 5th gear shaft, the 6th gear shaft and intermeshing together the 5th gear and the 6th gear;
Described the 5th gear shaft and the 6th gear shaft are arranged side by side on this pair of side plates; Described the 5th gear and the 6th gear are between this pair of side plates, and be set in respectively on the 5th gear shaft and the 6th gear shaft, wherein, the 5th gear is connected with a cover plate in adjacent two cover plates, and the 6th gear is connected with another piece cover plate in adjacent two cover plates.
8. cover board arrangement as claimed in claim 7, is characterized in that, described synchronous connector also comprises the first gear junction plate and the second gear junction plate;
Described the first gear junction plate and the second gear junction plate and are separately fixed at two adjacent ends of adjacent two cover plates between described pair of side plates; The first gear junction plate is set on described the 5th gear shaft, and the 5th gear is fixed on the side of this first gear junction plate; The second gear junction plate is set on described the 6th gear shaft, and the 6th gear is fixed on the side of this second gear junction plate.
9. cover board arrangement as claimed in claim 1, is characterized in that, described lifting device comprises a pair of hydraulic jack for the other end of the described pair of guide rails of difference lifting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110426854.2A CN103161390B (en) | 2011-12-19 | 2011-12-19 | Large self-balancing type safe and labor-saving cover plate device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110426854.2A CN103161390B (en) | 2011-12-19 | 2011-12-19 | Large self-balancing type safe and labor-saving cover plate device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103161390A true CN103161390A (en) | 2013-06-19 |
| CN103161390B CN103161390B (en) | 2014-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110426854.2A Active CN103161390B (en) | 2011-12-19 | 2011-12-19 | Large self-balancing type safe and labor-saving cover plate device |
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| CN (1) | CN103161390B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106638706A (en) * | 2017-02-13 | 2017-05-10 | 南通科莱能源技术有限公司 | Automatic folding cover plate structure for pipeline trench |
| CN106677222A (en) * | 2017-02-23 | 2017-05-17 | 南通科莱能源技术有限公司 | Automatic folding cover plate structure used for pump well |
| CN107143261A (en) * | 2017-05-10 | 2017-09-08 | 江苏广通电力设备有限公司 | Rotary moveable beam combined gate tank cover plate |
| CN107780755A (en) * | 2016-08-24 | 2018-03-09 | 上海太比雅电力设备有限公司 | Hoisting port masking device |
| CN108442410A (en) * | 2018-05-11 | 2018-08-24 | 无锡华九机械设备有限公司 | A kind of manhole capping apparatus |
| CN108868502A (en) * | 2018-06-29 | 2018-11-23 | 黄河明珠水利水电建设有限公司 | A kind of safety labor-saving swing bolster type cover board |
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| DE3801586A1 (en) * | 1988-01-21 | 1989-08-03 | Helmut Hebrok | Roof, in particular terrace roof |
| FR2608192B1 (en) * | 1986-12-12 | 1992-04-30 | Accoplas Fermetures | FOLDABLE COVER FOR VERANDA OR SIMILAR SHELTER |
| CN201099937Y (en) * | 2007-04-14 | 2008-08-13 | 北京佳多科曼科技发展有限公司 | Article-hoisting port safety barrier device |
| CN201883889U (en) * | 2010-10-14 | 2011-06-29 | 江苏广通电力设备有限公司 | Hoisting-hole movable turning-up door panel |
| CN202401915U (en) * | 2011-12-19 | 2012-08-29 | 上海太比雅电力设备有限公司 | Large self-balancing safe and labor-saving cover plate device |
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| FR2608192B1 (en) * | 1986-12-12 | 1992-04-30 | Accoplas Fermetures | FOLDABLE COVER FOR VERANDA OR SIMILAR SHELTER |
| DE3801586A1 (en) * | 1988-01-21 | 1989-08-03 | Helmut Hebrok | Roof, in particular terrace roof |
| CN201099937Y (en) * | 2007-04-14 | 2008-08-13 | 北京佳多科曼科技发展有限公司 | Article-hoisting port safety barrier device |
| CN201883889U (en) * | 2010-10-14 | 2011-06-29 | 江苏广通电力设备有限公司 | Hoisting-hole movable turning-up door panel |
| CN202401915U (en) * | 2011-12-19 | 2012-08-29 | 上海太比雅电力设备有限公司 | Large self-balancing safe and labor-saving cover plate device |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107780755A (en) * | 2016-08-24 | 2018-03-09 | 上海太比雅电力设备有限公司 | Hoisting port masking device |
| CN106638706A (en) * | 2017-02-13 | 2017-05-10 | 南通科莱能源技术有限公司 | Automatic folding cover plate structure for pipeline trench |
| CN106677222A (en) * | 2017-02-23 | 2017-05-17 | 南通科莱能源技术有限公司 | Automatic folding cover plate structure used for pump well |
| CN107143261A (en) * | 2017-05-10 | 2017-09-08 | 江苏广通电力设备有限公司 | Rotary moveable beam combined gate tank cover plate |
| CN108442410A (en) * | 2018-05-11 | 2018-08-24 | 无锡华九机械设备有限公司 | A kind of manhole capping apparatus |
| CN108868502A (en) * | 2018-06-29 | 2018-11-23 | 黄河明珠水利水电建设有限公司 | A kind of safety labor-saving swing bolster type cover board |
| CN108868502B (en) * | 2018-06-29 | 2019-08-02 | 黄河明珠水利水电建设有限公司 | A kind of safety labor-saving swing bolster type cover board |
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| Publication number | Publication date |
|---|---|
| CN103161390B (en) | 2014-11-05 |
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