CN108643550B - Overhanging scaffold limiting device and construction method - Google Patents
Overhanging scaffold limiting device and construction method Download PDFInfo
- Publication number
- CN108643550B CN108643550B CN201810485855.6A CN201810485855A CN108643550B CN 108643550 B CN108643550 B CN 108643550B CN 201810485855 A CN201810485855 A CN 201810485855A CN 108643550 B CN108643550 B CN 108643550B
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- pin
- rod support
- trapezoidal
- limiting rod
- cone
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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
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/04—Means for fastening, supporting, or bracing scaffolds on or against building constructions
-
- 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
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/007—Devices and methods for erecting scaffolds, e.g. automatic scaffold erectors
Abstract
The invention discloses a limit device of an overhanging scaffold and a construction method, which mainly comprise a trapezoidal pin limit rod support and two pin cone tight extrusion buckles, wherein the side surface of each pin cone tight extrusion buckle is provided with a V-shaped groove, the lower inclined plane of the V-shaped groove is matched with the inner inclined plane of an I-shaped steel flange plate, the two sides of the trapezoidal pin limit rod support are both provided with locking inclined planes matched with the upper inclined planes of the V-shaped groove, the bottom of the trapezoidal pin limit rod support is attached to the flange plate of the I-shaped steel, the two pin cone tight extrusion buckles extrude the trapezoidal pin limit rod support from the two sides of the flange plate of the I-shaped steel by using external force, the trapezoidal pin limit rod support is fixed on the trapezoidal pin limit rod support through a clamping bolt, anti-sliding friction is formed between the two inclined planes of the V-shaped groove and the locking inclined plane of the trapezoidal pin limit rod support and the I-shaped steel flange plate, and a scaffold steel. The invention has good bending resistance and tensile resistance, displacement prevention, repeated use, convenient operation, high installation efficiency and project cost saving.
Description
Technical Field
The invention belongs to the field of constructional engineering, relates to a scaffold installation auxiliary technology, and particularly relates to a limit device for an overhanging scaffold and a construction method.
Background
In the existing building engineering, a floor scaffold is replaced by an overhanging scaffold, a limiting steel bar and a wage steel are welded by a limiting rod of the traditional overhanging scaffold, and the traditional process has the problems of poor welding seam quality of the limiting rod, poor bending resistance of the limiting rod and welding damage to I-shaped steel; the safety problems of the compression resistance and the bending resistance of the I-shaped steel, fire hazard caused by welding, electric shock caused by welding and the like occur. The I-shaped steel in the traditional process is difficult to be repeatedly and variously utilized, the environment-friendly requirement is difficult to be met, and the economic cost of the project is increased.
Disclosure of Invention
The invention aims to provide a limiting device of an overhanging scaffold and a construction method, which are used for solving the problems that the traditional limiting rod of the overhanging scaffold in the prior art is poor in bending resistance and damages H-shaped steel by welding, so that the limiting rod can be repeatedly and variously utilized, the environmental protection requirement can be met, and the project economic cost is reduced.
In order to solve the technical problems, the invention adopts the technical scheme that:
the utility model provides a scaffold limit device encorbelments which characterized in that: the pin cone tight-extrusion buckling device mainly comprises a trapezoidal pin limit rod support and two symmetrical pin cone tight-extrusion buckles, wherein a V-shaped groove is formed in the side face of the pin cone tight-extrusion buckle, the lower inclined plane of the V-shaped groove is matched with the inner inclined plane of an I-shaped steel flange plate, the two sides of the trapezoidal pin limit rod support are both provided with locking inclined planes matched with the upper inclined planes of the V-shaped groove, during installation, the bottom of the trapezoidal pin limit rod support is attached to the flange plate of the I-shaped steel, the two pin cone tight-extrusion buckles are tightly supported by the trapezoidal pin limit rod support from the two sides of the flange plate of the I-shaped steel by utilizing external force, the pin cone tight-extrusion buckles and the trapezoidal pin limit rod support are relatively fixed and kept in a tight-extrusion state through a fastening device, anti-slip friction is formed between the two inclined planes of the V-shaped groove and the locking inclined planes of the trapezoidal pin limit rod.
As an improvement, the fastening device comprises a clamping bolt and a waist hole arranged on the pin cone tightening buckle, the pin cone tightening buckle and the trapezoid pin limit rod support are relatively fixed after the clamping bolt penetrates through the waist hole, and the direction of the waist hole enables the two pin cone tightening buckles to move and tighten in the direction close to the trapezoid pin limit rod support under the action of external force, so that the degree of tightening of the trapezoid pin limit rod support is adjusted.
As an improvement, the clamping bolt comprises a screw and a locking nut, the screw penetrates through the waist hole and then is fixed with the trapezoidal pin limiting rod support through threads, and the locking nut is installed on the screw above the waist hole and used for adjusting the tightness degree between the pin cone extruding buckle and the trapezoidal pin limiting rod support.
As an improvement, the trapezoidal pin limiting rod support is provided with a bolt hole for a screw to pass through, and one side of the bolt hole, which is close to the flange plate, is provided with a rotation limiting nut and a rotation limiting groove for installing the rotation limiting nut.
As an improvement, the two inclined planes of the V-shaped groove are both diamond-shaped friction surfaces.
As an improvement, the contact surface of the trapezoid pin limit rod support and the I-shaped steel flange plate is a rhombic friction surface.
As an improvement, each pin cone squeezing buckle is connected with a trapezoidal pin limiting rod support through 2-4 clamping bolts.
As an improvement, the trapezoidal pin limiting rod support is provided with a limiting rod used for fixing a limiting scaffold steel pipe, and the scaffold steel pipe is sleeved on the limiting rod for limiting.
As an improvement, the limiting rod is a round rod with a special-shaped cross section.
A construction method of a limit device of an overhanging scaffold is characterized by comprising the following steps:
firstly, before one end of an I-shaped steel for installing an overhanging scaffold is fastened with a reserved annular steel bar in concrete, a symmetrical pin cone extruding buckle and a pin cone limiting rod support are positioned at a pre-designed position on the overhanging I-shaped steel, and the assembly is carried out according to the structure to complete the position arrangement;
secondly, carrying out primary extrusion on symmetrical pin cone extruding buckles and the trapezoidal pin cone limiting rod support which are arranged on the overhanging I-shaped steel by utilizing a clamping bolt; a screw rod penetrates through a waist hole of the pin cone extruding and fastening buckle and a bolt hole of the trapezoidal pin cone limiting rod support to be screwed with a rotation limiting nut, and the screw rod and the rotation limiting nut are screwed to the bottom;
thirdly, after the pin cone squeezing buckle and the trapezoidal pin cone limiting rod support are preliminarily clamped, laterally knocking the side face of the pin cone squeezing buckle by a small steel hammer to promote the pin cone squeezing buckle and the trapezoidal pin cone limiting rod support to form effective squeezing;
and step four, screwing the locking nut again after the effective extrusion, so that the final clamping effect between the pin cone extruding buckle and the trapezoidal pin cone limiting rod support is achieved, and the installation of the cantilever scaffold limiting device is completed.
The invention has the beneficial effects that:
the invention creatively provides a limit device and a construction method for an overhanging scaffold, which are used for limiting the overhanging scaffold. The cantilever I-steel welding fixture has the advantages of being good in bending resistance and tensile resistance, preventing displacement, effectively avoiding the traditional problem of welding damage to the I-steel caused by welding the limiting rod and the cantilever I-steel, improving the repeated use frequency of the cantilever I-steel, and being convenient to construct and operate. The method effectively ensures the engineering safety and progress, saves project cost, and can accelerate the installation progress; the construction process is scientifically simplified; the tensile and bending strength of the limiting rod piece is improved; the safety factor is improved; the repeated use times of the overhanging I-shaped steel is improved; the project electricity and welding auxiliary material cost are saved; avoid purposes such as welding conflagration and welding electric shock, still solved following technical problem simultaneously:
4.1 the problem of poor bending resistance and tensile resistance of the traditional limiting rod piece is solved.
4.2 avoid because of traditional gag lever post with the I-steel welding of encorbelmenting, the I-steel that loses encorbelments improves the I-steel number of times and the scope of using of encorbelmenting.
4.3 adopt the tight principle of the crowded of round pin awl, make round pin awl crowded tight knot and trapezoidal round pin awl gag lever post and encorbelment between the I-steel form scientific and reliable fastening.
4.4 the anti-sliding is enhanced by adopting the clamping principle of the bolt and the rhombic friction surface.
4.5 the overhanging limiting device is fastened on the overhanging I-shaped steel by adopting the principle of compaction and clamping.
4.6 limiting the rotation of the hex nut using hex slots
4.7 saving the labor and welding auxiliary materials of the project
4.8 reduce project conflagration and construction electric shock safety risk.
4.9 is suitable for various I-shaped steels and H-shaped steels, and has wide application range.
4.10 the structure style is simple, construction is simple and convenient.
Drawings
Fig. 1 is a schematic view of a limit device of an overhanging scaffold;
FIG. 2 is a cross-sectional view of the pin cone tightener;
FIG. 3 is an isometric view of a pin cone jam;
FIG. 4 is a cross-sectional view of a trapezoidal pin stop lever bracket;
FIG. 5 is a perspective view of a trapezoidal pin limiting rod;
FIG. 6 is a three-dimensional schematic view of the trapezoid pin limiting rod in the upward view direction;
fig. 7 is a schematic view of the distribution of the overhanging scaffold limiting device on an I-shaped steel.
1-pin cone extruding and fastening, 2-trapezoid pin limiting rod support, 3-clamping bolt, 4-flange plate, 5-locking nut, 6-rotation limiting nut, 7-waist hole, 8-V-shaped groove, 9-diamond friction surface, 10-limiting rod, 11-rotation limiting groove, 12-bolt hole and 13-I-shaped steel.
Detailed Description
The invention is illustrated in the following with reference to the accompanying drawings.
As shown in fig. 1 to 7, a limit device for an overhanging scaffold mainly comprises a trapezoidal pin limit rod support 2 and two symmetrically installed pin cone tightening buckles 1, wherein a V-shaped groove 8 is arranged on the side surface of each pin cone tightening buckle 1, the lower inclined surface of the V-shaped groove 8 is matched with the inner side inclined surface of an I-steel flange plate 4, locking inclined surfaces matched with the upper inclined surfaces of the V-shaped groove 8 are arranged on both sides of each trapezoidal pin limit rod support 2, when the device is installed, the bottom of each trapezoidal pin limit rod support 2 is attached to the flange plate 4 of an I-steel, the two pin cone tightening buckles 1 tighten the trapezoidal pin limit rod supports 2 from both sides of the flange plate 4 of the I-steel by external force, the pin cone tightening buckles and the trapezoidal pin limit rod supports 2 are fixed relatively by fastening devices to keep a tightened state, and the two inclined surfaces of the V-shaped grooves 8 respectively form anti-slip friction with the locking inclined surfaces of the trapezoidal pin limit rod supports 2 and the inner side surfaces of the flange plate 4 of the I-, the trapezoid pin limiting rod support 2 is used for installing a limiting scaffold steel pipe.
The fastening device is a clamping bolt 3 and a waist hole 7 arranged on the pin cone tightening buckle 1, the pin cone tightening buckle 1 and the trapezoidal pin limit rod support 2 are fixed relatively after the clamping bolt 3 penetrates through the waist hole 7, and the directions of the waist holes 7 enable the two pin cone tightening buckles 1 to move and tighten in the direction close to the trapezoidal pin limit rod support 2 under the action of external force, so that the degree of tightening the trapezoidal pin limit rod support 2 is adjusted.
For the clamping bolt 3, one example is: the clamping bolt 3 comprises a screw rod and a locking nut 5, the screw rod penetrates through the waist hole 7 and then is screwed and fixed with a screw hole in the trapezoidal pin limiting rod support 2, and the locking nut 5 is installed on the screw rod above the waist hole 7 and used for adjusting the tightness degree between the pin cone extruding buckle 1 and the trapezoidal pin limiting rod support 2.
For the clamping bolt 3, another example is: be equipped with the bolt hole 12 that supplies the screw rod to pass on trapezoidal round pin gag lever post 2, bolt hole 12 is close to flange plate 4 one side and is equipped with the limited rotation groove 11 of limited rotation nut 6 and installation limited rotation nut 6, because common nut is hexagon nut in this embodiment, so limited rotation groove 11 can be for being equipped with the hexagonal groove counter bore of bolt hole 12 bottom.
As a more preferable embodiment, the two inclined planes of the V-shaped groove 8 are both diamond-shaped friction surfaces 9, the contact surfaces of the trapezoidal pin limit rod support 2 and the i-steel flange plate 4 are the diamond-shaped friction surfaces 9, and the diamond-shaped friction surfaces 9 are friction surfaces provided with diamond-shaped raised grains.
Every round pin awl is crowded tight knot 1 and is all linked to each other with trapezoidal round pin stop lever support 2 through 2-4 clamp bolt 3, and in one of them preferred embodiment, every round pin awl is crowded tight knot 1 and all links to each other with trapezoidal round pin stop lever support 2 through 2 clamp bolt 3, and 4 clamp bolt 3 install the fastening that two round pin awl are crowded tight 1 symmetries in trapezoidal round pin stop lever support 2 both sides.
The trapezoidal pin limiting rod support 2 is provided with a limiting rod 10 used for fixing a limiting scaffold steel pipe, the limiting rod 10 is limited by sleeving the scaffold steel pipe on the limiting rod 10, the limiting rod 10 is a round rod with a special-shaped cross section, so that the possibility of rotation of the scaffold steel pipe and the limiting rod 10 is reduced, good bending resistance and tensile resistance are provided, and the cross section of the specific limiting rod 10 can be a polygonal cross section, an oval cross section or a quincunx cross section with alternately contracted edges.
A construction method of a limit device of an overhanging scaffold is characterized by comprising the following steps:
the scaffold that encorbelments is being set up in the engineering project, combines the project characteristics according to the scaffold that encorbelments standard, compiles the scaffold scheme of encorbelmenting, carries out the safety technology to scaffold installation team and hands over the end. And the organization technical responsible personnel and the safety professional managers supervise the site and instruct the scaffold to be set up.
Firstly, before one end of an I-shaped steel for installing an overhanging scaffold is fastened with a reserved annular steel bar in concrete, positioning a symmetrical pin cone extruding and fastening buckle 1 and a trapezoidal pin limiting rod support 2 at a pre-designed position on the overhanging I-shaped steel, assembling according to the structure, and finishing position arrangement;
secondly, carrying out preliminary squeezing on the symmetrical pin cone squeezing buckles 1 and the trapezoidal pin limiting rod supports 2 which are arranged on the overhanging I-shaped steel by using the clamping bolts 3; a screw rod penetrates through a waist hole 7 of the pin cone tight extrusion buckle 1 and a bolt hole 12 of the trapezoidal pin limiting rod support 2 to be screwed with the rotation limiting nut 6, and the screw rod and the rotation limiting nut 6 are screwed to the bottom;
thirdly, after the pin cone extruding and fastening buckle 1 and the trapezoidal pin limiting rod support 2 are preliminarily clamped, laterally knocking the side surface of the pin cone extruding and fastening buckle 1 by a small steel hammer to promote the pin cone extruding and fastening buckle 1 and the trapezoidal pin limiting rod support 2 to form effective extrusion;
and step four, screwing the locking nut 5 again after the effective extrusion, so that the final clamping effect is achieved between the pin cone extruding buckle 1 and the trapezoidal pin limiting rod support 2, and the installation of the overhanging scaffold limiting device is completed.
Accomplish the scaffold limiting device installation back of encorbelmenting, will encorbelment the I-steel according to the scaffold approval technical scheme that encorbelments, carry out reasonable arranging, then embolia the scaffold steel pipe with the dysmorphism gag lever post 10 of trapezoidal round pin gag lever post support 2, can accomplish the scaffold and tentatively set up.
Claims (9)
1. The utility model provides a scaffold limit device encorbelments which characterized in that: the device mainly comprises a trapezoidal pin limit rod support and two symmetrically-installed pin cone tight extrusion buckles, wherein a V-shaped groove is formed in the side face of the pin cone tight extrusion buckle, the lower inclined plane of the V-shaped groove is matched with the inner inclined plane of an I-shaped steel flange plate, locking inclined planes matched with the upper inclined planes of the V-shaped groove are arranged on the two sides of the trapezoidal pin limit rod support, when the device is installed, the bottom of the trapezoidal pin limit rod support is attached to the flange plate of the I-shaped steel, the two pin cone tight extrusion buckles tightly extrude the trapezoidal pin limit rod support from the two sides of the flange plate of the I-shaped steel by using external force, the pin cone tight extrusion buckles and the trapezoidal pin limit rod support are relatively fixed and kept in a tight extrusion state by a fastening device, anti-sliding friction is formed between the two inclined planes of the V-shaped groove and the locking inclined planes of the trapezoidal pin limit rod support and the inner side face of the flange;
the fastening device is a clamping bolt and a waist hole formed in the pin cone tightening buckle, the clamping bolt penetrates through the waist hole and then fixes the pin cone tightening buckle and the trapezoidal pin limiting rod support relatively, and the waist hole direction enables the two pin cone tightening buckles to move and tighten in the direction close to the trapezoidal pin limiting rod support under the action of external force, so that the degree of tightening of the trapezoidal pin limiting rod support can be adjusted.
2. The cantilevered scaffold stop of claim 1, wherein: the clamping bolt comprises a screw rod and a locking nut, the screw rod penetrates through the waist hole and then is fixed with the trapezoidal pin limiting rod support through threads, and the locking nut is installed on the screw rod above the waist hole and used for adjusting the tightness degree between the pin cone extruding buckle and the trapezoidal pin limiting rod support.
3. The cantilevered scaffold stop of claim 2, wherein: the trapezoidal pin limiting rod support is provided with a bolt hole for a screw to pass through, and one side of the bolt hole, which is close to the flange plate, is provided with a rotation limiting nut and a rotation limiting groove for installing the rotation limiting nut.
4. The cantilevered scaffold stop of claim 1, wherein: and the two inclined planes of the V-shaped groove are both diamond-shaped friction surfaces.
5. The cantilevered scaffold stop of claim 1, wherein: the contact surface of the trapezoid pin limiting rod support and the flange plate of the I-shaped steel is a rhombic friction surface.
6. The cantilevered scaffold stop of claim 2, wherein: each pin cone squeezing buckle is connected with the trapezoidal pin limiting rod support through 2-4 clamping bolts.
7. An overhanging scaffold stop as claimed in any one of claims 1 to 6 wherein: the trapezoidal pin limiting rod support is provided with a limiting rod used for fixing a limiting scaffold steel pipe, and the scaffold steel pipe is sleeved on the limiting rod to limit.
8. The cantilevered scaffold stop of claim 7, wherein: the limiting rod is a round rod with a special-shaped section.
9. A construction method of the limit device of the cantilever scaffold as claimed in any one of claims 1 to 6, characterized by comprising the following steps:
firstly, before one end of an I-shaped steel for installing an overhanging scaffold is fastened with a reserved annular steel bar in concrete, a symmetrical pin cone extruding buckle and a pin cone limiting rod support are positioned at a pre-designed position on the overhanging I-shaped steel, and the assembly is carried out according to the structure to complete the position arrangement;
secondly, carrying out primary extrusion on symmetrical pin cone extruding buckles and the trapezoidal pin cone limiting rod support which are arranged on the overhanging I-shaped steel by utilizing a clamping bolt; a screw rod penetrates through a waist hole of the pin cone extruding and fastening buckle and a bolt hole of the trapezoidal pin cone limiting rod support to be screwed with a rotation limiting nut, and the screw rod and the rotation limiting nut are screwed to the bottom;
thirdly, after the pin cone squeezing buckle and the trapezoidal pin cone limiting rod support are preliminarily clamped, laterally knocking the side face of the pin cone squeezing buckle by a small steel hammer to promote the pin cone squeezing buckle and the trapezoidal pin cone limiting rod support to form effective squeezing;
and step four, screwing the locking nut again after the effective extrusion, so that the final clamping effect between the pin cone extruding buckle and the trapezoidal pin cone limiting rod support is achieved, and the installation of the cantilever scaffold limiting device is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810485855.6A CN108643550B (en) | 2018-05-21 | 2018-05-21 | Overhanging scaffold limiting device and construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810485855.6A CN108643550B (en) | 2018-05-21 | 2018-05-21 | Overhanging scaffold limiting device and construction method |
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| Publication Number | Publication Date |
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| CN108643550A CN108643550A (en) | 2018-10-12 |
| CN108643550B true CN108643550B (en) | 2020-06-16 |
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| CN201810485855.6A Active CN108643550B (en) | 2018-05-21 | 2018-05-21 | Overhanging scaffold limiting device and construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110004836A (en) * | 2019-04-24 | 2019-07-12 | 平煤神马建工集团有限公司 | A kind of groove locker of fixed collet |
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| JPH10325239A (en) * | 1997-05-27 | 1998-12-08 | Sekisui House Ltd | Metal fixture of temporary scaffolding and temporary mounting trestle of building constituent |
| CN201539640U (en) * | 2009-10-12 | 2010-08-04 | 北京木联能科技有限公司 | Steel pipe support hanger frame |
| CN102966235A (en) * | 2012-11-09 | 2013-03-13 | 南通华凯重工有限公司 | Carrying tool |
| CN203050076U (en) * | 2013-01-08 | 2013-07-10 | 福建四海建设有限公司 | Scaffold upright rod combination-type locating device |
| CN203603446U (en) * | 2013-12-12 | 2014-05-21 | 中建海峡建设发展有限公司 | Clamping-groove-type fixing device for H-section steel of cantilever |
| CN205476407U (en) * | 2016-04-15 | 2016-08-17 | 深圳市建安(集团)股份有限公司 | Building construction beam frame |
-
2018
- 2018-05-21 CN CN201810485855.6A patent/CN108643550B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10325239A (en) * | 1997-05-27 | 1998-12-08 | Sekisui House Ltd | Metal fixture of temporary scaffolding and temporary mounting trestle of building constituent |
| CN201539640U (en) * | 2009-10-12 | 2010-08-04 | 北京木联能科技有限公司 | Steel pipe support hanger frame |
| CN102966235A (en) * | 2012-11-09 | 2013-03-13 | 南通华凯重工有限公司 | Carrying tool |
| CN203050076U (en) * | 2013-01-08 | 2013-07-10 | 福建四海建设有限公司 | Scaffold upright rod combination-type locating device |
| CN203603446U (en) * | 2013-12-12 | 2014-05-21 | 中建海峡建设发展有限公司 | Clamping-groove-type fixing device for H-section steel of cantilever |
| CN205476407U (en) * | 2016-04-15 | 2016-08-17 | 深圳市建安(集团)股份有限公司 | Building construction beam frame |
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| CN108643550A (en) | 2018-10-12 |
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Effective date of registration: 20210624 Address after: No.2 Wuxia Road, Dongli District, Tianjin 300301 Patentee after: Tianjin Yiye Construction Engineering Co.,Ltd. Address before: No.3, Gongye Road, Qingshan District, Wuhan City, Hubei Province Patentee before: CHINA FIRST METALLURGICAL GROUP Co.,Ltd. |
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