CN204899557U - Thing hole safety device is hung to sliding pair door plant formula - Google Patents
Thing hole safety device is hung to sliding pair door plant formula Download PDFInfo
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- CN204899557U CN204899557U CN201520598684.XU CN201520598684U CN204899557U CN 204899557 U CN204899557 U CN 204899557U CN 201520598684 U CN201520598684 U CN 201520598684U CN 204899557 U CN204899557 U CN 204899557U
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Abstract
The utility model belongs to the technical field of the building and specifically relates to a thing hole safety device is hung to sliding pair door plant formula, including being fixed in the frame of building on the floor, main door plant passes through the hinge and rotates and connects on the frame, and main door plant bottom is close to hinge one side and is fixed with first pivoting support, and the frame below is fixed with the supporting leg, and the supporting leg lower extreme is fixed with the second pivoting support, and push rod helping hand system both ends link to each other with first pivoting support, second pivoting support respectively, the main door plant outside is equipped with at least a set of climbing mechanism, and the climbing mechanism surface is equipped with the supporting rollern structure, vice door plant support in the supporting rollern is structural. The utility model discloses the product is suitable for comparatively complicated erecting bed, it lifts by crane space and space for maintenance can furthest to remain equipment, protector has better decoratively, safety performance.
Description
Technical field
The utility model relates to building field, and specifically a kind of sliding pair door panel-type hangs thing hole safety device.
Background technology
Hanging thing hole safety device is a kind of safety protection equipment being applied in equipment lifting hole or maintenance hole in multistory building, such as: the enterprises such as power station, thermal power plant, iron and steel works, this type of lifting eye, manhole adopt steel deck-plate capping hole or hole surrounding to install permanent barrier usually, when needing equipment or the repair apparatus of lower floor in lifting building, need to hang out steel deck-plate, temporary fence is set, by the lifting appliance such as crane or hoist engine during work; Workload is large, need many people to assist; Can ornamental difference, inharmonious with integrated environment, unsightly; There is potential safety hazard.
Summary of the invention
The utility model, for the problems referred to above, provides a kind of sliding pair door panel-type to hang thing hole safety device, adopts this protector can be applicable to complicated erecting bed, can lift by crane space and space for maintenance by retaining device to greatest extent.
According to the technical solution of the utility model: a kind of sliding pair door panel-type hangs thing hole safety device, it is characterized in that: comprise the housing be fixed on building floor, main door-plate is connected on housing by hinge through, the first pivoting support is fixed with near hinge side bottom main door-plate, supporting leg is fixed with below housing, supporting leg lower end is fixed with the second pivoting support, push rod force aid system two ends respectively with the first pivoting support, second pivoting support is connected, at least one group of lifting body is provided with outside described main door-plate, lifting body surface is provided with supporting rollern structure, secondary door-plate is supported in described supporting rollern structure.
As further improvement of the utility model, described push rod force aid system comprises described push rod force aid system and comprises one or more groups push rod, and many group push rods are arranged in parallel, and push rod provides power to carry out stretching motion by drive unit
As further improvement of the utility model, described drive unit comprises synchronizing shaft, drive motors, and drive motors is rotated by gear drive synchronizing shaft, and synchronizing shaft two ends are connected with the power shaft of corresponding push rod respectively by a shaft coupling.
As further improvement of the utility model, described drive unit comprises synchronizing shaft, first drive motors, second drive motors, first gear-box, second gear-box, the output of described first drive motors is connected with the input of the first gear-box by the first shaft coupling, the output of the second drive motors is connected with the input of the second gear-box by the second shaft coupling, synchronizing shaft two ends are respectively by a shaft coupling and the first gear-box, the intermediate propeller shaft of both the second gear-boxes is connected, the output of the first gear-box, the output of the second gear-box is meshed with the travelling gear on the power shaft of push rod respectively by first gear.
As further improvement of the utility model, the sleeve that described push rod comprises shell and is slidably connected with shell, screw mandrel is provided with in shell inner cavity, screw mandrel one end is stretched in sleeve, and the nut thread that screw mandrel and sleeve ends are fixed coordinates, screw mandrel other end rotating support is on the plane bearing of shell upper, clutch shaft bearing, the second bearing, at the screw mandrel upper end body of rod, the second bevel gear is installed simultaneously, shell is also provided with the power shaft of horizontal expansion, the first bevel gear is fixed in power shaft the inner, and described first bevel gear is meshed with the second bevel gear.
As further improvement of the utility model, the sleeve that described push rod comprises shell and is slidably connected with shell, screw mandrel is provided with in shell inner cavity, screw mandrel one end is stretched in sleeve, and the nut thread that screw mandrel and sleeve ends are fixed coordinates, screw mandrel other end rotating support is on the plane bearing of shell upper, clutch shaft bearing, the second bearing, at the screw mandrel upper end body of rod, worm gear is installed simultaneously, shell is also provided with the power shaft of horizontal expansion, the part that power shaft stretches in shell forms worm screw, and described worm gear matches with worm screw.
As further improvement of the utility model, described lifting body comprises track, rail base one end is provided with the first hinge, the other end is provided with the second hinge, wherein the first hinge lower end is connected with the first sleeve, first sleeve is slidably connected the first tip-lever support, the first screw mandrel is provided with in first tip-lever support cavity, first screw mandrel upper end is stretched in the first sleeve, and the first screw mandrel is connected with the first nut thread of the first sleeve lower end, first screw mandrel lower end is by the 3rd bearing, 4th bearing, first plane bearing rotating support is in the first tip-lever support, and the 3rd bevel gear is fixed on the first screw mandrel lower end body of rod, first tip-lever support is also provided with the first power input shaft of horizontal expansion, the 5th bevel gear is fixed in first power input shaft the inner, described 5th bevel gear is meshed with the 3rd bevel gear, second hinge lower end is connected with the second sleeve, second sleeve is slidably connected the second tip-lever support, the second screw mandrel is provided with in second tip-lever support cavity, second screw mandrel upper end is stretched in the second sleeve, and the second screw mandrel is connected with the second nut thread of the second sleeve lower end, second screw mandrel lower end is by the 5th bearing, 6th bearing, second plane bearing rotating support is in the second tip-lever support, and the 4th bevel gear is fixed on the second screw mandrel lower end body of rod, second tip-lever support is also provided with the second power input shaft of horizontal expansion, the 6th bevel gear is fixed in second power input shaft the inner, described 6th bevel gear is meshed with the 4th bevel gear, first synchronizing shaft one end is connected with the first power input shaft by the 3rd shaft coupling, and the first synchronizing shaft other end is connected with the second power input shaft by the 4th shaft coupling, described first synchronizing shaft is driven by the 3rd drive motors and rotates, and the gear of the 3rd drive motors output is meshed with the 4th gear fixing on the first synchronizing shaft.
Technique effect of the present utility model is: the utility model product is suitable for comparatively complicated erecting bed; Space and space for maintenance can be lifted by crane by retaining device to greatest extent; Protector has ornamental preferably; Security performance is high.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is Fig. 1 open mode schematic diagram.
Fig. 3 is the utility model the second embodiment structural representation.
Fig. 4 is Fig. 3 open mode schematic diagram.
Fig. 5 is the structural representation of push rod force aid system in the utility model.
Fig. 6 is the structural representation of the second embodiment of push rod force aid system.
Fig. 7,8 is two kinds of structural representations of push rod in the utility model.
Fig. 9 is lifting body contraction state schematic diagram in the utility model.
Figure 10 is lifting body raised configuration schematic diagram in the utility model.
Figure 11 is the connection diagram of supporting rollern structure and track in the utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is further described.
In Fig. 1 ~ 11, comprise building floor 1, housing 2, power shaft 20, first bevel gear 21, nut 22, screw mandrel 23, sleeve 24, clutch shaft bearing 25.1, second bearing 25.2, second bevel gear 26, plane bearing 27, shell 28, worm screw 29, hinge 3, worm gear 30, first tip-lever support 31.1, second tip-lever support 31.2, first plane bearing 32.1, second plane bearing 32.2, 3rd bevel gear 33.1, 4th bevel gear 33.2, 3rd bearing 34.1, 4th bearing 34.2, 5th bearing 34.3, 6th bearing 34.4, first nut 35, first screw mandrel 36, first sleeve 37.1, second sleeve 37.2, first hinge 38.1, second hinge 38.2, track 39, first pivoting support 4, 5th bevel gear 40.1, 6th bevel gear 40.2, first power input shaft 41.1, second power input shaft 41.2, 3rd shaft coupling 42.1, 4th shaft coupling 42.2, first synchronizing shaft 43, 4th gear 44, 3rd drive motors 45, second round nut 46, second screw mandrel 47, roller 48.1, 48.2, axle 49, junction plate 50, main door-plate 5, supporting rollern structure 6.1, 6.2, lifting body 7.1, secondary door-plate 8.1, supporting leg 9, pivoting support 10, push rod force aid system 11, push rod 12.1, 12.2, shaft coupling 13.1, 13.2, synchronizing shaft 14, gear 15, drive motors 16, first gear 17.1, 17.2, first gear-box 18.1, second gear-box 18.2, synchronous bearing 19 etc.
As Fig. 1, shown in 3, the utility model is that a kind of sliding pair door panel-type hangs thing hole safety device, comprise the housing 2 be fixed on building floor 1, main door-plate 5 is rotationally connected with on housing 2 by hinge 3, the first pivoting support 4 is fixed with near hinge 3 side bottom main door-plate 5, supporting leg 9 is fixed with below housing 2, supporting leg 9 lower end is fixed with the second pivoting support 10, push rod force aid system 11 two ends respectively with the first pivoting support 4, second pivoting support 10 is connected, at least one group of lifting body 7.1 is provided with outside described main door-plate 5, lifting body 7.1 surface is provided with supporting rollern structure 6.1, 6.2, secondary door-plate 8.1 is supported in described supporting rollern structure 6.1, 6.2 on.Fig. 1 and Fig. 3 sets forth a kind of embodiment of the present utility model, and the difference of two kinds of embodiments is, the embodiment in Fig. 3 is than having more a set of lifting body 7.1 in Fig. 1.
As shown in Figure 5,6, described push rod force aid system 11 comprises one or more groups push rod 12.1,12.2, and many group push rods 12.1,12.2 arranged in parallel, and push rod 12.1,12.2 provides power to carry out stretching motion by drive unit.Drive unit can have numerous embodiments.
As shown in Figure 5, the first embodiment of drive unit: drive unit comprises synchronizing shaft 14, drive motors 16, drive motors 16 drives synchronizing shaft 14 to rotate by gear 15, and synchronizing shaft 14 two ends are connected respectively by the power shaft 20 of a shaft coupling 13.1,13.2 with corresponding push rod 12.1,12.2.
As shown in Figure 6, drive unit comprises synchronizing shaft 14, first drive motors 16.1, second drive motors 16.2, first gear-box 18.1, second gear-box 18.2, the output of described first drive motors 16.1 is connected with the input of the first gear-box 18.1 by the first shaft coupling 14.1, the output of the second drive motors 16.2 is connected with the input of the second gear-box 18.2 by the second shaft coupling 14.2, synchronizing shaft 14 two ends are respectively by a shaft coupling 13.1, 13.2 and first gear-box 18.1, the intermediate propeller shaft of both the second gear-boxes 18.2 is connected, the output of the first gear-box 18.1, the output of the second gear-box 18.2 is respectively by first gear 17.1, 17.2 with push rod 12.1, travelling gear on the power shaft 20 of 12.2 is meshed.
In practice, drive motors 16 also can be air motor, hydraulic motor etc., and gear 15 also can be chain or belt etc., by gear 15 or chain or belt by power transmission on synchronizing shaft 14, thus drive pushrod movement.
As shown in Figure 7, the first embodiment of push rod in the utility model, push rod 12.1, 12.2 sleeves 24 comprising shell 28 and be slidably connected with shell 28, screw mandrel 23 is provided with in shell 28 inner chamber, screw mandrel 23 one end is stretched in sleeve 24, and nut 22 threaded engagement of screw mandrel 23 and sleeve 24 end winding support, screw mandrel 23 other end rotating support is in the plane bearing 27 on shell 28 top, clutch shaft bearing 25.1, on second bearing 25.2, at the screw mandrel 23 upper end body of rod, the second bevel gear 26 is installed simultaneously, shell 28 is also provided with the power shaft 20 of horizontal expansion, the first bevel gear 21 is fixed in power shaft 20 the inner, described first bevel gear 21 is meshed with the second bevel gear 26.
As shown in Figure 8, the second embodiment of push rod in the utility model, push rod 12.1, 12.2 sleeves 24 comprising shell 28 and be slidably connected with shell 28, screw mandrel 23 is provided with in shell 28 inner chamber, screw mandrel 23 one end is stretched in sleeve 24, and nut 22 threaded engagement of screw mandrel 23 and sleeve 24 end winding support, screw mandrel 23 other end rotating support is in the plane bearing 27 on shell 28 top, clutch shaft bearing 25.1, on second bearing 25.2, at the screw mandrel 23 upper end body of rod, worm gear 30 is installed simultaneously, shell 28 is also provided with the power shaft 20 of horizontal expansion, the part that power shaft 20 stretches in shell 28 forms worm screw 29, described worm gear 30 matches with worm screw 29.
The course of action of push rod is as follows: power inputs by power shaft 20, the first bevel gear 21, second bevel gear 26 is driven to carry out action successively by power shaft 20, and driving screw mandrel 23 to rotate by the second bevel gear 26, screw mandrel 23 is in rotation process, and band moving sleeve 24 carries out stretching motion.
As Fig. 9, shown in 10, lifting body 7.1 comprises track 39, track 39 bottom end is provided with the first hinge 38.1, the other end is provided with the second hinge 38.2, wherein the first hinge 38.1 lower end is connected with the first sleeve 37.1, first sleeve 37.1 is slidably connected the first tip-lever support 31.1, the first screw mandrel 36 is provided with in first tip-lever support 31.1 cavity, first screw mandrel 36 upper end is stretched in the first sleeve 37.1, and the first screw mandrel 36 is threaded with the first nut 35 of the first sleeve 37.1 lower end, first screw mandrel 36 lower end is by the 3rd bearing 34.1, 4th bearing 34.2, first plane bearing 32.1 rotating support is in the first tip-lever support 31.1, and the 3rd bevel gear 33.1 is fixed on the first screw mandrel 36 lower end body of rod, first tip-lever support 31.1 is also provided with the first power input shaft 41.1 of horizontal expansion, the 5th bevel gear 40.1 is fixed in first power input shaft 41.1 the inner, described 5th bevel gear 40.1 is meshed with the 3rd bevel gear 33.1, second hinge 38.2 lower end is connected with the second sleeve 37.2, second sleeve 37.2 is slidably connected the second tip-lever support 31.2, the second screw mandrel 47 is provided with in second tip-lever support 31.2 cavity, second screw mandrel 47 upper end is stretched in the second sleeve 37.2, and the second screw mandrel 47 is threaded with the second nut 46 of the second sleeve 37.2 lower end, second screw mandrel 47 lower end is by the 5th bearing 34.3, 6th bearing 34.4, second plane bearing 32.2 rotating support is in the second tip-lever support 31.2, and the 4th bevel gear 33.2 is fixed on the second screw mandrel 47 lower end body of rod, second tip-lever support 31.2 is also provided with the second power input shaft 41.2 of horizontal expansion, the 6th bevel gear 40.2 is fixed in second power input shaft 41.2 the inner, described 6th bevel gear 40.2 is meshed with the 4th bevel gear 33.2, first synchronizing shaft 43 one end is connected with the first power input shaft 41.1 by the 3rd shaft coupling 42.1, and first synchronizing shaft 43 other end is connected with the second power input shaft 41.2 by the 4th shaft coupling 42.2, described first synchronizing shaft 43 is driven by the 3rd drive motors 45 and rotates, and the gear of the 3rd drive motors 45 output is meshed with the 4th gear 44 fixing on the first synchronizing shaft 43.
The course of action of lifting body 7.1 is as follows: the 3rd drive motors 45 also can be chain by the 4th gear 44(of pair of meshing, belt etc.) drive the first synchronizing shaft 43 to rotate, first synchronizing shaft 43 two ends are respectively by the 3rd shaft coupling 42.1, 4th shaft coupling 42.2 is connected to the first tip-lever support 31.1, first power input shaft 41.1 of the second tip-lever support 31.2, on second power input shaft 41.2, final drive first set cylinder 37.1, second sleeve 37.2 stretches out, but because the pitch of pitch ratio first screw mandrel 36 of the second screw mandrel 47 is large, (pitch of pitch ratio first screw mandrel 36 of the second screw mandrel 47 is large in slope state to cause track 39, the distance that second screw mandrel 47 rotates 1 circle second nut 46 rectilinear motion rotates the distance of 1 circle first nut 35 rectilinear motion than the first screw mandrel 36, such as: the pitch of the second screw mandrel 47 is 5mm, the pitch of the first leading screw 36 is 3mm, second screw mandrel 47 rotates 1 circle second nut 46 rectilinear motion 5mm, first screw mandrel 36 rotates 1 circle first nut 35 rectilinear motion 3mm).
Shown in Figure 11, supporting rollern 6.1,6.2 comprises the roller 48.1,48.2 sliding and be arranged in track 39, and two rollers are contained in axle 49 two ends respectively, and junction plate 50 and axle 49 are fixed together and can roll in track 39 and slide.Secondary door-plate 8.1 is located on junction plate 50, and junction plate 50 is driven by the first screw mandrel 36, second screw mandrel 47 and carries out elevating movement.
Claims (7)
1. a sliding pair door panel-type hangs thing hole safety device, it is characterized in that: comprise the housing (2) be fixed on building floor (1), main door-plate (5) is rotationally connected with on housing (2) by hinge (3), main door-plate (5) bottom is fixed with the first pivoting support (4) near hinge (3) side, housing (2) below is fixed with supporting leg (9), supporting leg (9) lower end is fixed with the second pivoting support (10), push rod force aid system (11) two ends respectively with the first pivoting support (4), second pivoting support (10) is connected, described main door-plate (5) outside is provided with at least one group of lifting body (7.1), lifting body (7.1) surface is provided with supporting rollern structure (6.1, 6.2), secondary door-plate (8.1) is supported in described supporting rollern structure (6.1, 6.2) on.
2. hang thing hole safety device according to sliding pair door panel-type according to claim 1, it is characterized in that: described push rod force aid system (11) comprises one or more groups push rod (12.1,12.2), and to organize push rod (12.1,12.2) arranged in parallel more, push rod (12.1,12.2) provides power to carry out stretching motion by drive unit.
3. hang thing hole safety device according to sliding pair door panel-type according to claim 2, it is characterized in that: described drive unit comprises synchronizing shaft (14), drive motors (16), drive motors (16) drives synchronizing shaft (14) to rotate by gear (15), and synchronizing shaft (14) two ends are connected respectively by the power shaft (20) of a shaft coupling (13.1,13.2) with corresponding push rod (12.1,12.2).
4. hang thing hole safety device according to sliding pair door panel-type according to claim 2, it is characterized in that: described drive unit comprises synchronizing shaft (14), first drive motors (16.1), second drive motors (16.2), first gear-box (18.1), second gear-box (18.2), the output of described first drive motors (16.1) is connected with the input of the first gear-box (18.1) by the first shaft coupling (14.1), the output of the second drive motors (16.2) is connected with the input of the second gear-box (18.2) by the second shaft coupling (14.2), synchronizing shaft (14) two ends are respectively by a shaft coupling (13.1, 13.2) with the first gear-box (18.1), second gear-box (18.2) both intermediate propeller shafts are connected, the output of the first gear-box (18.1), the output of the second gear-box (18.2) is respectively by first gear (17.1, 17.2) with push rod (12.1, 12.2) travelling gear on power shaft (20) is meshed.
5. hang thing hole safety device according to the sliding pair door panel-type described in Claims 2 or 3, it is characterized in that: described push rod (12.1, 12.2) sleeve (24) comprising shell (28) and be slidably connected with shell (28), screw mandrel (23) is provided with in shell (28) inner chamber, screw mandrel (23) one end is stretched in sleeve (24), and nut (22) threaded engagement of screw mandrel (23) and sleeve (24) end winding support, screw mandrel (23) other end rotating support is in the plane bearing (27) on shell (28) top, clutch shaft bearing (25.1), on second bearing (25.2), at screw mandrel (23) the upper end body of rod, the second bevel gear (26) is installed simultaneously, shell (28) is also provided with the power shaft (20) of horizontal expansion, the first bevel gear (21) is fixed in power shaft (20) the inner, described first bevel gear (21) is meshed with the second bevel gear (26).
6. hang thing hole safety device according to the sliding pair door panel-type described in Claims 2 or 3, it is characterized in that: described push rod (12.1, 12.2) sleeve (24) comprising shell (28) and be slidably connected with shell (28), screw mandrel (23) is provided with in shell (28) inner chamber, screw mandrel (23) one end is stretched in sleeve (24), and nut (22) threaded engagement of screw mandrel (23) and sleeve (24) end winding support, screw mandrel (23) other end rotating support is in the plane bearing (27) on shell (28) top, clutch shaft bearing (25.1), on second bearing (25.2), at screw mandrel (23) the upper end body of rod, worm gear (30) is installed simultaneously, shell (28) is also provided with the power shaft (20) of horizontal expansion, the part that power shaft (20) stretches in shell (28) forms worm screw (29), described worm gear (30) matches with worm screw (29).
7. hang thing hole safety device according to sliding pair door panel-type according to claim 1, it is characterized in that: described lifting body (7.1) comprises track (39), track (39) bottom end is provided with the first hinge (38.1), the other end is provided with the second hinge (38.2), wherein the first hinge (38.1) lower end is connected with the first sleeve (37.1), first sleeve (37.1) is slidably connected the first tip-lever support (31.1), the first screw mandrel (36) is provided with in first tip-lever support (31.1) cavity, first screw mandrel (36) upper end is stretched in the first sleeve (37.1), and the first screw mandrel (36) is threaded with first nut (35) of the first sleeve (37.1) lower end, first screw mandrel (36) lower end is by the 3rd bearing (34.1), 4th bearing (34.2), first plane bearing (32.1) rotating support is in the first tip-lever support (31.1), and the 3rd bevel gear (33.1) is fixed on the body of rod of the first screw mandrel (36) lower end, first tip-lever support (31.1) is also provided with first power input shaft (41.1) of horizontal expansion, the 5th bevel gear (40.1) is fixed in first power input shaft (41.1) the inner, described 5th bevel gear (40.1) is meshed with the 3rd bevel gear (33.1), second hinge (38.2) lower end is connected with the second sleeve (37.2), second sleeve (37.2) is slidably connected the second tip-lever support (31.2), the second screw mandrel (47) is provided with in second tip-lever support (31.2) cavity, second screw mandrel (47) upper end is stretched in the second sleeve (37.2), and the second screw mandrel (47) is threaded with second nut (46) of the second sleeve (37.2) lower end, second screw mandrel (47) lower end is by the 5th bearing (34.3), 6th bearing (34.4), second plane bearing (32.2) rotating support is in the second tip-lever support (31.2), and the 4th bevel gear (33.2) is fixed on the body of rod of the second screw mandrel (47) lower end, second tip-lever support (31.2) is also provided with second power input shaft (41.2) of horizontal expansion, the 6th bevel gear (40.2) is fixed in second power input shaft (41.2) the inner, described 6th bevel gear (40.2) is meshed with the 4th bevel gear (33.2), first synchronizing shaft (43) one end is connected with the first power input shaft (41.1) by the 3rd shaft coupling (42.1), and the first synchronizing shaft (43) other end is connected with the second power input shaft (41.2) by the 4th shaft coupling (42.2), described first synchronizing shaft (43) is driven by the 3rd drive motors (45) and rotates, and the gear of the 3rd drive motors (45) output is meshed with upper the 4th fixing gear (44) of the first synchronizing shaft (43).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520598684.XU CN204899557U (en) | 2015-08-10 | 2015-08-10 | Thing hole safety device is hung to sliding pair door plant formula |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520598684.XU CN204899557U (en) | 2015-08-10 | 2015-08-10 | Thing hole safety device is hung to sliding pair door plant formula |
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| Publication Number | Publication Date |
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| CN204899557U true CN204899557U (en) | 2015-12-23 |
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| CN201520598684.XU Active CN204899557U (en) | 2015-08-10 | 2015-08-10 | Thing hole safety device is hung to sliding pair door plant formula |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105019765A (en) * | 2015-08-10 | 2015-11-04 | 江苏广通电力设备有限公司 | Sliding subsidiary door sheet type hanging hole safety protection device |
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2015
- 2015-08-10 CN CN201520598684.XU patent/CN204899557U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105019765A (en) * | 2015-08-10 | 2015-11-04 | 江苏广通电力设备有限公司 | Sliding subsidiary door sheet type hanging hole safety protection device |
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