CN108952195B - Building site is with preventing weighing down thing device - Google Patents
Building site is with preventing weighing down thing device Download PDFInfo
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- CN108952195B CN108952195B CN201810792616.5A CN201810792616A CN108952195B CN 108952195 B CN108952195 B CN 108952195B CN 201810792616 A CN201810792616 A CN 201810792616A CN 108952195 B CN108952195 B CN 108952195B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/32—Safety or protective measures for persons during the construction of buildings
- E04G21/3261—Safety-nets; Safety mattresses; Arrangements on buildings for connecting safety-lines
- E04G21/3266—Safety nets
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- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention relates to the field of building construction, in particular to an anti-falling device for a building site, which comprises an anti-falling net and at least two anti-falling mechanisms with the same structure, wherein the anti-falling net is positioned between the two anti-falling mechanisms in a tensioning state, each anti-falling mechanism comprises a main slide way, an extension slide way, an anti-falling device and a power device, the main slide way is arranged in a vertical posture in a normal state, the extension slide way can be vertically and movably inserted into the upper end of the main slide way in the normal state through a screw rod transmission mechanism, the anti-falling net is horizontal, two ends of the anti-falling net are respectively and fixedly connected with the top end of one extension slide way, and the anti-falling device can be movably arranged at the lower end of the main slide way towards the ground through the power device.
Description
Technical Field
The invention relates to the field of building construction, in particular to an anti-falling device for a building site.
Background
With the continuous development of science and technology, more and more high buildings appear in the sight of people, the high buildings or some novel buildings need to invest a large amount of personnel, time and mechanical equipment for operation in the building process, so that in the building work, constructors can establish fences, namely a working area is in the fences, and pedestrians pass through the fences, so that the constructors can establish prompting boards at the periphery to prompt the pedestrians not to enter the working area and keep away from the periphery of the working area as soon as possible.
Disclosure of Invention
The invention aims to provide an object falling prevention device for a construction site, aiming at the defects of the prior art.
In order to solve the above problems, the present invention provides the following technical solutions: an anti-falling device for a building site comprises an anti-falling net and at least two anti-falling mechanisms with the same structure, wherein the anti-falling net is positioned between the two anti-falling mechanisms in a tensioning state, each anti-falling mechanism comprises a main slide way, an extension slide way, an anti-falling device and a power device, the main slide way is arranged in a vertical posture in a normal state, the extension slide way can be vertically and movably inserted into the upper end of the main slide way in the normal state through a screw rod transmission mechanism, the anti-falling net is horizontal, two ends of the anti-falling net are respectively and fixedly connected with the top end of one extension slide way, and the anti-falling device can be movably arranged at the lower end of the main slide way towards the ground through the power device;
the anti-toppling device comprises at least three stable supporting parts, the structures of all the stable supporting parts are the same, in all the stable supporting parts, every two stable supporting parts are arranged in an obtuse angle of 120 degrees, the power device is arranged at the lower end of the main slideway and is always positioned above all the stable supporting parts, the power device comprises a hydraulic rod, the hydraulic rod is in an inverted posture, the rod body of the hydraulic rod is fixedly connected with one side of the main slideway, a pressurizing piece is arranged at the other side of the main slideway, a guide block is arranged below the hydraulic rod, the guide block can be vertically and movably sleeved on the main slideway, the outer side surface of the guide block is fixedly connected with all the stable supporting parts, and the upper surface of the guide block is fixedly connected with an output rod of the hydraulic;
the steady support portion includes hollow core plate, extension board and adjusting part, the one end and the guide block fixed connection of hollow core plate, and the other end of hollow core plate is the outside extension of level and this end is uncovered setting, and the extension board passes through adjusting part can the horizontal activity install in the opening end of hollow core plate, and the one end that the hollow core plate was kept away from to the extension board is provided with the positioning bolt that top-down runs through the extension board, and the positioning bolt welding is on the extension board, and the casting die in advance is installed to positioning bolt's end.
Further, the adjusting part includes step motor and small-size trapezoidal lead screw, and small-size trapezoidal lead screw hub joint is at the top of hollow plate, and step motor installs the one end at small-size trapezoidal lead screw and still is connected with its transmission, and the cover is equipped with the nut piece that can with it transmission fit on the small-size trapezoidal lead screw, and the guide way that can be linked together rather than inside is seted up to the upper surface of hollow plate, and guide way and extension board fixed connection are passed through to the bottom of nut piece, and the last surface mounting of hollow plate has the machine box that can cover step motor and small-size trapezoidal lead screw cage.
Further, pre-compaction spare includes chassis and pre-compaction dish, and chassis and the terminal coaxial welding of positioning bolt, pre-compaction dish are located under the chassis to through the bottom elastic connection on pre-compaction spring and chassis, the bottom of pre-compaction dish is provided with a plurality of conflict bumps that are circular array and distribute.
Furthermore, the V-shaped plate is welded on the outer side of one end, far away from the hollow plate, of the extension plate, and the opening surface of the V-shaped plate faces outwards.
Further, all install on one of them steady rest portion in the steady rest portion and prevent shaking the piece to prevent shaking the piece and install the machine box outside in this steady rest portion, prevent shaking the piece and include the pendulum rod, the one end of pendulum rod and the machine box outside coupling that corresponds thereof, the amalgamation piece is installed to the lateral surface of main slide, this amalgamation piece is located the top of first pressure boost board, the front side that main slide was kept away from to the amalgamation piece is uncovered setting, the surface subsides of pendulum rod free end are equipped with the rubber layer, the free end of pendulum rod can be to the uncovered internal rotation of amalgamation piece, can dismantle through large-scale bolt and be connected between the free end of pendulum rod and the amalgamation piece.
Has the advantages that: the anti-falling device for the building site can effectively block articles such as bricks and the like falling off due to accidents, so that the safety of pedestrians around the building area is directly protected.
Drawings
FIG. 1 is a schematic view of the working state of the present invention;
FIG. 2 is a schematic perspective view of the present invention;
FIG. 3 is an enlarged view taken at A in FIG. 2;
FIG. 4 is an enlarged view at B in FIG. 2;
FIG. 5 is a top view of the present invention;
FIG. 6 is a partial perspective view of the first embodiment of the present invention;
FIG. 7 is a partial perspective view of the second embodiment of the present invention;
FIG. 8 is a first schematic plan view of the present invention;
FIG. 9 is a second schematic plan view of the present invention;
FIG. 10 is a third schematic view of a partial perspective structure of the present invention;
description of reference numerals: an anti-falling net 1 and an anti-falling mechanism 1 a.
The device comprises a main slide way 2, a splicing block 2a, a self-locking universal wheel 2b, an extension slide way 2c and a screw rod transmission mechanism 2 d.
The anti-toppling device 3, the steady rest portion 3a, the hollow plate 3a1, the extension board 3a2, the positioning bolt 3a3, the chassis 3b, the pre-pressing disc 3c, the conflict bump 3e, the pre-pressing spring 3f, the V-shaped plate 3q, the pendulum rod 3 w.
The adjusting component 4, a stepping motor 4a, a small trapezoidal screw rod 4b, a guide groove 4c and a machine box 4 d.
A power device 5, a hydraulic rod 5a, a guide block 5b, a first pressurizing plate 5c, a second pressurizing plate 5d and a pressurizing spring 5 e.
Detailed Description
The following detailed description of specific embodiments of the present invention is made with reference to the accompanying drawings and examples:
referring to fig. 1 to 10, the anti-falling device for the construction site comprises an anti-falling net 1 and at least two anti-falling mechanisms 1a with the same structure, wherein the anti-falling net 1 is located between the two anti-falling mechanisms 1a in a tensioning state, each anti-falling mechanism 1a comprises a main slideway 2, an extension slideway 2c, an anti-falling device 3 and a power device 5, the main slideway 2 is arranged in a normal state in a vertical posture, the extension slideway 2c can be vertically movably inserted into the upper end of the main slideway 2 in the normal state through a screw rod transmission mechanism 2d, the anti-falling net 1 is horizontal, two ends of the anti-falling net are respectively and fixedly connected with the top end of the extension slideway 2c, and the anti-falling device 3 can be movably arranged at the lower end of the main slideway 2 towards the ground through the power device 5.
The anti-toppling device 3 comprises at least three stable supporting parts 3a, the structures of all the stable supporting parts 3a are the same, in all the stable supporting parts 3a, every two stable supporting parts are arranged in an obtuse angle of 120 degrees, the power device 5 is arranged at the lower end of the main slideway 2 and is always positioned above all the stable supporting parts 3a, the power device 5 comprises a hydraulic rod 5a, the hydraulic rod 5a is in an inverted posture, the rod body of the hydraulic rod is fixedly connected with one side of the main slideway 2, the other side of the main slideway 2 is provided with a pressurizing piece, a guide block 5b is arranged below the hydraulic rod 5a, the guide block 5b can be vertically movably sleeved on the main slideway 2, the outer side surface of the guide block 5b is fixedly connected with all the stable supporting parts 3a, and the upper surface of the guide block 5b is fixedly connected with the output rod of the hydraulic rod 5 a; during operation, main slide 2 is vertical gesture and sets up, extend slide 2c and carry out vertical rising through lead screw drive mechanism 2d, the peripheral actual distance that the height of rising coincide job site is main, mainly install the periphery at the job site, near the needs of roadside pedestrian's walking pass through promptly, before lead screw drive mechanism 2d carries out work, hydraulic stem 5a carries out work, through the vertical activity of drive guide block 5b, make all steady rest portion 3a contact ground, with this with the firm pendulum of main slide 2 establish the subaerial of setting for the position, the pressure boost spare has guaranteed that all steady rest portion 3a can carry out the conflict of tensioning with ground.
The pressurizing part comprises a first pressurizing plate 5c fixedly connected with the main slideway 2, a horizontal second pressurizing plate 5d is arranged below the hydraulic rod 5a, an output rod of the hydraulic rod 5a penetrates through the second pressurizing plate 5d, the first pressurizing plate 5c and the second pressurizing plate 5d are symmetrically arranged, and the bottoms of the first pressurizing plate 5c and the second pressurizing plate 5d are respectively and elastically connected with the upper surface of the guide block 5b through a pressurizing spring 5 e; after the guide block 5b is descended by the driving force, all the stable support parts 3a descend synchronously, when the output rod of the hydraulic rod 5a works, one pressurizing spring 5e at the position of the guide block is extruded, and the other pressurizing spring 5e also moves vertically along with the guide block 5b and is in a telescopic state, further, the pressurizing spring 5e is in a normal state, namely, the guide block 5b is propped against the ground, namely, when the hydraulic rod 5a retracts, the pressurizing spring 5e is pressed to contract, so that when the output rod of the hydraulic rod 5a extends, the pressurizing spring 5e is matched with the extending stroke, all the stable support parts 3a are propped against the ground by the acting force of the pressurizing spring 5e and the acting force of the hydraulic rod 5 a.
The steady rest part 3a comprises a hollow plate 3a1, an extension plate 3a2 and an adjusting assembly 4, one end of the hollow plate 3a1 is fixedly connected with the guide block 5b, the other end of the hollow plate 3a1 extends horizontally outwards and is arranged in an open manner, the extension plate 3a2 can be horizontally movably installed in the open end of the hollow plate 3a1 through the adjusting assembly 4, one end, away from the hollow plate 3a1, of the extension plate 3a2 is provided with a positioning bolt 3a3 which penetrates through the extension plate 3a2 from top to bottom, the positioning bolt 3a3 is welded on the extension plate 3a2, and the tail end of the positioning bolt 3a3 is provided with a prepressing piece; in a construction site, considering surrounding environments which generally have wall surfaces, grating fences and the like, the length of the stable supporting part 3a can be adjusted at will, the adjusting assembly 4 is used for driving the extension plate 3a2 to move in the hollow plate 3a1 to be drawn out or retracted, so that the length is changed, the position where the main slideway 2 needs to be arranged is narrow, the lengths of the three stable supporting parts 3a are adjusted to be different at will and can be contacted with the wall surfaces or the grating fences in the narrow space to form horizontal collision, the positioning bolt 3a3 is contacted with the ground by virtue of a prepressing piece to achieve the purpose of supporting the main slideway 2, and the positioning bolt 3a3 forms vertical collision with the ground.
The adjusting assembly 4 comprises a stepping motor 4a and a small trapezoidal lead screw 4b, the small trapezoidal lead screw 4b is connected to the top of the hollow plate 3a1 in a shaft mode, the stepping motor 4a is installed at one end of the small trapezoidal lead screw 4b and is in transmission connection with the small trapezoidal lead screw, a nut block which can be in transmission fit with the small trapezoidal lead screw 4b is sleeved on the small trapezoidal lead screw 4b, a guide groove 4c which can be communicated with the inside of the hollow plate 3a1 is formed in the upper surface of the hollow plate 3a1, the bottom of the nut block is fixedly connected with the extension plate 3a2 through the guide groove 4c, and a machine box 4d which can cover the stepping motor 4a and the small trapezoidal lead screw 4b is installed on the upper surface of; the stepping motor 4a is used for driving the small trapezoidal lead screw 4b to rotate around the axis thereof, and further the nut block carries the extension plate 3a2 to move horizontally in the hollow plate 3a1, so that the total length between the hollow plate 3a1 and the extension plate 3a2 is changed.
The prepressing part comprises a base plate 3b and a prepressing disc 3c, the base plate 3b is coaxially welded with the tail end of a positioning bolt 3a3, the prepressing disc 3c is positioned under the base plate 3b and is elastically connected with the bottom of the base plate 3b through a prepressing spring 3f, and a plurality of interference salient points 3e distributed in a circular array are arranged at the bottom of the prepressing disc 3 c; when the guide block 5b is driven to descend by the hydraulic rod 5a, the hollow plate 3a1 and the extension plate 3a2 in each stable supporting part 3a vertically descend, the prepressing disc 3c at the tail end of the positioning bolt 3a3 contacts the ground first in descending, and the prepressing spring 3f is squeezed, so that the prepressing disc 3c is in contact with the ground in a tensioning state, the friction force between the butting salient points 3e and the ground is increased at the bottom of the prepressing disc 3c, and stability is guaranteed.
The outer side of one end of the extension plate 3a2, which is far away from the hollow plate 3a1, is welded with a V-shaped plate 3q, and the opening surface of the V-shaped plate 3q faces outwards; in the above embodiment, after the extension plate 3a2 is moved in the hollow plate 3a1, the assembly between the two is changed, so that the complicated construction site environment is adapted, that is, after the V-shaped plate 3q at the front end of the extension plate 3a2 is moved in the extension plate 3a2, the V-shaped plate 3q can contact with the wall surface or the grid fence of the construction site, and the horizontal interference is achieved, and the lateral inclination is prevented.
An anti-shaking piece is arranged on one stable support part 3a of all the stable support parts 3a and is arranged on the outer side of a machine box 4d in the stable support part 3a, the anti-shaking piece comprises a swing rod 3w, one end of the swing rod 3w is in shaft joint with the outer side of the machine box 4d corresponding to the swing rod 3w, a splicing block 2a is arranged on the outer side surface of the main slideway 2, the splicing block 2a is positioned above the first pressurizing plate 5c, the front side, far away from the main slideway 2, of the splicing block 2a is arranged in an open manner, a rubber layer is attached to the outer surface of the free end of the swing rod 3w, the free end of the swing rod 3w can rotate towards the open of the splicing block 2a, and the free end of the swing rod 3w is detachably connected with the splicing block 2a through a large bolt; when the guide block 5b is descended by the operation of the hydraulic rod 5a, the prepressing discs 3c in all the stable supporting parts 3a are in extrusion contact with the ground, at the moment, the swing rod 3w is rotated, the free end of the swing rod 3w is transferred into the opening of the splicing block 2a, the rubber layer on the outer surface of the free end of the swing rod 3w is in extrusion contact with the inside of the splicing block 2a, and then the two parts are manually screwed through a large bolt to prevent all the stable supporting parts 3a from upwarping.
The surface of the bottom end of the main slideway 2 is provided with a self-locking universal wheel 2 b; after the hydraulic rod 5a is reset, all the stable supporting parts 3a are far away from the ground, at the moment, the main slideway 2 can be moved through the self-locking type universal wheels 2b, and the main slideway 2 can be moved to enter another specific construction site for anti-falling protection under the condition that the specific construction position in the construction site is changed.
The working principle is as follows: when the device works, the main slide way 2 in one of the falling object prevention mechanisms 1a is arranged in a vertical posture, the arrangement place is mainly arranged at the periphery of a construction site, namely the vicinity of a roadside pedestrian needing to walk, the hydraulic rod 5a works, the guide block 5b is driven to vertically move, in the work, one pressurizing spring 5e at the position is extruded, the other pressurizing spring 5e is also in a telescopic state along with the vertical movement of the guide block 5b, all the stable supporting parts 3a synchronously descend at the same time, at the moment, the hollow plates 3a1 and the extension plates 3a2 in all the stable supporting parts 3a vertically descend, in the descending process, the prepressing discs 3c at the tail ends of the positioning bolts 3a3 firstly contact the ground and extrude the prepressing springs 3f, so that the prepressing discs 3c are in a tensioned state contact with the ground, and the guide block 5b is also in a tensioned state through the pressurizing springs 5e, the arrangement of two springs ensures the stable contact of the pre-pressing disc 3c with the ground, and at the construction site, considering the surrounding environment, which generally has wall surface, grating fence, etc., so the length of the stable supporting part 3a can be adjusted arbitrarily, the adjusting component 4 is used to drive the extension board 3a2 to move in the hollow board 3a1 to draw out or retract, so as to change the length, so that the place where the main slideway 2 needs to be arranged is narrower, the length of the three stable supporting parts 3a can be adjusted to be different, and the extension board 3a2 can contact with the wall surface or grating fence in the narrow space, and the contact point of the extension board 3a2 with the wall surface or grating fence depends on the V-shaped board 3q, so as to reach the horizontal contact point, prevent the lateral tilting, and after the pre-pressing discs 3c in all the stable supporting parts 3a are squeezed with the ground, at the moment, the swing rod 3w is rotated, the free end of the swing rod 3w is transferred into an opening of the splicing block 2a, a rubber layer on the outer surface of the free end of the swing rod 3w is in extrusion contact with the inside of the splicing block 2a, then the swing rod and the splicing block are manually screwed through a large bolt to prevent all the stable supporting parts 3a from upwarping, then the other falling object prevention mechanism 1a is moved to another set place to enable the falling prevention net 1 to be in a tensioning state, then the other falling object prevention mechanism 1a is operated to be in stable contact with the ground, then the screw rod transmission mechanisms 2d in the two falling object prevention mechanisms 1a are synchronously driven to enable the two extending slideways 2c to synchronously ascend, so that the falling prevention net 1 is located at a set horizontal height, and therefore falling prevention protection on the periphery of a construction site is achieved.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any minor modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the technical scope of the present invention.
Claims (4)
1. The utility model provides a building site is with preventing weighing down thing device which characterized in that: the anti-falling device comprises an anti-falling net (1) and at least two anti-falling mechanisms (1a) with the same structure, wherein the anti-falling net (1) is positioned between the two anti-falling mechanisms (1a) in a tensioning state, each anti-falling mechanism (1a) comprises a main slide way (2), an extension slide way (2c), an anti-falling device (3) and a power device (5), the main slide way (2) is arranged in a vertical posture in a normal state, the extension slide way (2c) can be vertically and movably inserted into the upper end of the main slide way (2) in the normal state through a screw rod transmission mechanism (2d), the anti-falling net (1) is horizontal, two ends of the anti-falling net are respectively and fixedly connected with the top end of one extension slide way (2c), and the anti-falling device (3) can be movably arranged at the lower end of the main slide way (2) towards the ground through;
the anti-toppling device (3) comprises at least three stable supporting parts (3a), the structures of all the stable supporting parts (3a) are the same, every two stable supporting parts (3a) are arranged at an obtuse angle of 120 degrees, and the power device (5) is arranged at the lower end of the main slideway (2) and is always positioned above all the stable supporting parts (3 a);
the power device (5) comprises a hydraulic rod (5a), the hydraulic rod (5a) is in an inverted posture, the rod body of the hydraulic rod is fixedly connected with one side of the main slideway (2), a pressurizing piece is installed on the other side of the main slideway (2), a guide block (5b) is arranged below the hydraulic rod (5a), the guide block (5b) can be vertically movably sleeved on the main slideway (2), the outer side surface of the guide block (5b) is fixedly connected with all the stable supporting parts (3a), and the upper surface of the guide block (5b) is fixedly connected with an output rod of the hydraulic rod (5 a);
the pressurizing part comprises a first pressurizing plate (5c) fixedly connected with the main slideway (2), a second pressurizing plate (5d) which is horizontal is arranged below the hydraulic rod (5a), an output rod of the hydraulic rod (5a) penetrates through the second pressurizing plate (5d), the first pressurizing plate (5c) and the second pressurizing plate (5d) are symmetrically arranged, and the bottoms of the first pressurizing plate and the second pressurizing plate are respectively and elastically connected with the upper surface of the guide block (5b) through a pressurizing spring (5 e);
the stable supporting part (3a) comprises a hollow plate (3a1), an extension plate (3a2) and an adjusting assembly (4), one end of the hollow plate (3a1) is fixedly connected with a guide block (5b), the other end of the hollow plate (3a1) extends horizontally outwards and is arranged in an open manner, the extension plate (3a2) can be horizontally and movably installed in the open end of the hollow plate (3a1) through the adjusting assembly (4), one end, away from the hollow plate (3a1), of the extension plate (3a2) is provided with a positioning bolt (3a3) penetrating through the extension plate (3a2) from top to bottom, the positioning bolt (3a3) is welded on the extension plate (3a2), and a prepressing piece is installed at the tail end of the positioning bolt (3a 3);
prepressing part includes chassis (3b) and prepressing disc (3c), and chassis (3b) and positioning bolt (3a3) end coaxial weld, and prepressing disc (3c) are located under chassis (3b) to through the bottom elastic connection of prepressing spring (3f) and chassis (3b), prepressing disc (3c) the bottom be provided with a plurality of conflict bumps (3e) that are circular array and distribute.
2. The falling object preventing device for the construction site according to claim 1, characterized in that: adjusting part (4) include step motor (4a) and small-size trapezoidal lead screw (4b), small-size trapezoidal lead screw (4b) coupling is at the top of hollow slab (3a1), step motor (4a) are installed in the one end of small-size trapezoidal lead screw (4b) and still are connected with it transmission, the cover is equipped with the nut piece that can with it transmission fit on small-size trapezoidal lead screw (4b), guide way (4c) that can be linked together rather than inside are seted up to the upper surface of hollow slab (3a1), the bottom of nut piece is passed through guide way (4c) and is extended plate (3a2) fixed connection, the last surface mounting of hollow slab (3a1) has machine box (4d) that can cover step motor (4a) and small-size trapezoidal lead screw (4 b).
3. The falling object preventing device for the construction site according to claim 1, characterized in that: the outer side of one end of the extension plate (3a2) far away from the hollow plate (3a1) is welded with a V-shaped plate (3q), and the opening surface of the V-shaped plate (3q) faces outwards.
4. The falling object preventing device for the construction site according to claim 2, characterized in that: all install on one of them steady rest portion (3a) in steady rest portion (3a) and prevent shaking the piece, and prevent shaking the piece and install in the machine box (4d) outside in this steady rest portion (3a), prevent shaking the piece and include pendulum rod (3w), the one end of pendulum rod (3w) and the machine box (4d) outside hub connection that corresponds thereof, amalgamation piece (2a) are installed to the lateral surface of main slide (2), the front side that main slide (2) were kept away from in amalgamation piece (2a) is uncovered setting, the surface subsides of pendulum rod (3w) free end are equipped with the rubber layer, the free end of pendulum rod (3w) can be to the uncovered internal rotation of amalgamation piece (2a), can dismantle through large-scale bolt between the free end of pendulum rod (3w) and amalgamation piece (2a) and be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810792616.5A CN108952195B (en) | 2018-07-18 | 2018-07-18 | Building site is with preventing weighing down thing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810792616.5A CN108952195B (en) | 2018-07-18 | 2018-07-18 | Building site is with preventing weighing down thing device |
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| CN108952195A CN108952195A (en) | 2018-12-07 |
| CN108952195B true CN108952195B (en) | 2020-12-29 |
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| CN201810792616.5A Expired - Fee Related CN108952195B (en) | 2018-07-18 | 2018-07-18 | Building site is with preventing weighing down thing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110886502B (en) * | 2019-12-13 | 2020-12-18 | 深圳中安建工程建设有限公司 | Mobilizable protector that fitment was used |
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| CN108952195A (en) | 2018-12-07 |
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