CN113700284A - Quick-release connecting device for scaffold extension rod and scaffold steel tube extension method - Google Patents
Quick-release connecting device for scaffold extension rod and scaffold steel tube extension method Download PDFInfo
- Publication number
- CN113700284A CN113700284A CN202111136394.XA CN202111136394A CN113700284A CN 113700284 A CN113700284 A CN 113700284A CN 202111136394 A CN202111136394 A CN 202111136394A CN 113700284 A CN113700284 A CN 113700284A
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- Prior art keywords
- elastic hoop
- scaffold
- extension bar
- elastic
- quick
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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
- E04G7/00—Connections between parts of the scaffold
- E04G7/02—Connections between parts of the scaffold with separate coupling elements
- E04G7/06—Stiff scaffolding clamps for connecting scaffold members of common shape
- E04G7/20—Stiff scaffolding clamps for connecting scaffold members of common shape for ends of members only, e.g. for connecting members in end-to-end relation
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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
- E04G5/007—Devices and methods for erecting scaffolds, e.g. automatic scaffold erectors
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The invention discloses a quick-release connecting device for a scaffold extension rod and a scaffold steel pipe extension method, wherein the device comprises the following components: the scaffold comprises an elastic hoop for the extension rod to be inserted, wherein the elastic hoop is provided with a first end and a second end which are opposite, one side of the elastic hoop is provided with a through notch which penetrates through the two ends of the elastic hoop, the end face of the first end of the elastic hoop is provided with an accommodating through groove which is used for sleeving one end of a steel pipe of the scaffold, and the accommodating through groove is arranged along the circumferential direction of the elastic hoop; the quick-release locking structure is pulled and connected to two opposite sides of the notch of the elastic hoop so that the inner wall of the elastic hoop is pressed against the outer wall of the extension rod; and a lift spring for supporting the extension bar, mounted within the first end of the elastic cuff. The invention solves the problem that the construction cost is increased because the traditional scaffold needs to prepare vertical rods with various nonstandard lengths when supporting and reinforcing the heterosexual structure.
Description
Technical Field
The invention relates to the technical field of scaffolds, in particular to a quick-release connecting device for a scaffold extension rod and a scaffold steel tube extension method.
Background
Due to the diversification of building design, the number of different-shaped structures (such as inclined structures, rotating structures and the like) is increased, and great difficulty is brought to the traditional scaffold construction method. When the bottom of the inclined structure is reinforced and supported, the height of the vertical rod of the traditional scaffold is a fixed size, so that vertical rods with various nonstandard lengths need to be prepared, and the construction cost is increased.
Disclosure of Invention
In order to overcome the defects in the prior art, a quick-release connecting device for a scaffold extension rod and a scaffold steel pipe extension method are provided so as to solve the problem that construction cost is increased because a plurality of nonstandard-length upright rods are required to be prepared for a traditional scaffold when supporting and reinforcing a heterosexual structure.
In order to achieve the above object, there is provided a quick release connecting device for a scaffold extension bar, comprising:
the scaffold comprises an elastic hoop for the extension rod to be inserted, wherein the elastic hoop is provided with a first end and a second end which are opposite, one side of the elastic hoop is provided with a through notch which penetrates through the two ends of the elastic hoop, the end face of the first end of the elastic hoop is provided with an accommodating through groove which is used for sleeving one end of a steel pipe of the scaffold, and the accommodating through groove is arranged along the circumferential direction of the elastic hoop;
the quick-release locking structure is pulled and connected to two opposite sides of the notch of the elastic hoop so that the inner wall of the elastic hoop is pressed against the outer wall of the extension rod; and
a lift spring for supporting the extension bar is mounted within the first end of the elastic cuff.
Further, the lifting spring is an inverted conical spring.
Furthermore, the width of the accommodating through groove is larger than the thickness of the pipe wall of the steel pipe.
Further, the external connection of elasticity cuff has two otic placodes, two the otic placode set up respectively in the relative both sides of breach, the perforation has been seted up to the otic placode, quick detach locking structure includes:
the screw rod of the connecting bolt penetrates through the through holes of the two lug plates, and the head of the connecting bolt is pressed against the outer side of one lug plate;
the limiting piece is provided with a first side and a second side which are opposite, the limiting piece is provided with a through hole which penetrates through the first side and the second side of the limiting piece, the screw rod is arranged in the through hole in a penetrating manner, and the first side of the limiting piece is pressed against the outer side of the other ear plate; and
the circumference of the cam is pressed against the second side of the limiting part, the cam is connected with a wheel shaft, one end of the screw rod, which is far away from the head, is provided with a shaft hole, and the wheel shaft is rotatably inserted into the shaft hole.
Furthermore, a driving claw is connected with the circumferential surface of the cam.
Further, the elastic hoop is a carbon fiber elastic hoop.
The invention provides a method for lengthening a scaffold steel pipe, which comprises the following steps:
providing a quick-release connecting device for a scaffold extension rod, and sleeving an accommodating through groove at the first end of an elastic hoop at one end of a steel pipe of a scaffold;
inserting an extension bar into an elastic hoop so that a lifting spring at a first end of the elastic hoop is supported on the extension bar;
adjusting the inserting depth of the extension bar to enable the length of the lengthened steel pipe to meet the requirement;
and a quick-release locking structure is arranged on the elastic hoop and is tied between the two opposite sides of the notch of the elastic hoop, so that the inner wall of the elastic hoop presses and abuts against the outer wall of the extension bar to lock the extension bar and fix the length of the extended steel pipe.
The quick-release connecting device for the scaffold extension rod has the beneficial effects that the quick-release locking structure applies a pulling force on the elastic hoop so that the elastic hoop is firmly clamped on the extension rod, the effective butt joint of the scaffold steel pipe and the extension rod can be ensured through the pulling force generated by the deformation of the lifting spring, the upward friction force and the gripping force generated by the clamping of the elastic hoop, and the force transmission system is stable.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a schematic structural view of a quick release connecting device for a scaffold extension rod according to an embodiment of the present invention.
Fig. 2 is a sectional view taken at a-a in fig. 1.
Fig. 3 is a schematic view illustrating a use state of the quick release connecting device for a scaffold extension rod according to an embodiment of the present invention.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1 to 3, the present invention provides a quick release connecting device for a scaffolding extension bar, comprising: the quick release device comprises an elastic hoop 1, a quick release locking structure 2 and a lifting spring 3.
In this embodiment, the elastic hoop has a circular ring shape. The elastic cuff 1 has opposite first and second ends. One side of the elastic hoop 1 is provided with a through notch 10. The through notches 10 penetrate through both ends of the elastic band 1. The end face of the first end of the elastic hoop 1 is formed with a receiving through groove 100. The accommodating through groove 100 is used for sleeving one end of the steel pipe 4 of the scaffold. The accommodating through groove 100 is disposed along the circumferential direction of the elastic ferrule 1. The inner ring hole of the elastic hoop 1 is used for movably inserting the extension bar 5.
The quick-release locking structure 2 is tied on two opposite sides of the notch 10 of the elastic hoop 1 so that the inner wall of the elastic hoop 1 presses and abuts against the outer wall of the long rod 5, and then the long rod is locked.
The pull spring 3 is mounted inside the first end of the elastic ferrule 1. The pulling spring 3 is used to support the bottom of the extension bar 5.
According to the quick-release connecting device for the scaffold extension rod, the elastic hoop is applied with the pulling force through the quick-release locking structure, so that the elastic hoop is firmly clamped on the extension rod, effective butt joint of a scaffold steel pipe and the extension rod can be ensured through the pulling force generated by deformation of the lifting spring, upward friction force and gripping force generated by clamping of the elastic hoop, a force transferring system is stable, on the other hand, the length of the lengthened scaffold steel pipe can be adjusted according to the remaining height of the inclined structure, the scaffold structure can be quickly disassembled, and the workload of workers is reduced.
In the present embodiment, the pulling spring 3 is a reverse tapered spring. The internal diameter size of the upper port of the inverted cone spring is larger than the external diameter of the extension rod, and the internal diameter size of the lower port of the inverted cone spring is smaller than the external diameter of the extension rod.
As a preferred embodiment, the width of the accommodating through groove 100 is larger than the thickness of the wall of the steel tube 4. The pipe wall of the end part of the scaffold steel pipe has movable allowance in the accommodating through groove.
In this embodiment, two ear plates 11 are connected to the outside of the elastic ferrule 1. The surfaces of the two ear plates are oppositely arranged. The two ear plates 11 are respectively arranged at two opposite sides of the gap 10. The ear plate 11 is perforated.
As a preferred embodiment, the quick release locking structure 2 includes: connecting bolt 21, stopper 22, cam 23.
Specifically, the screw 212 of the connecting bolt 21 is inserted into the through hole of the two ear plates 11. The head 211 of the connecting bolt 21 is pressed against the outside of an ear plate 11. The retaining member 22 has opposing first and second sides. The limiting member 22 is provided with a through hole penetrating through the first side and the second side of the limiting member 22. The screw rod is arranged in the through hole in a penetrating way. The first side of the limiting member 22 is pressed against the outer side of the other ear plate 11. The circumferential surface of the cam 23 is rotatably pressed against the second side of the limiting member 22. An axle 231 is connected to the cam 23. The screw rod is provided with a shaft hole at one end far away from the head. The wheel shaft is rotatably inserted in the shaft hole.
In this embodiment, the second side of the limiting member is formed with an arc-shaped abutting surface. The radian of the arc-shaped abutting surface is matched with the radian of the circumferential surface of the cam. Further, a drive pawl 232 is connected to the circumferential surface of the cam 23.
In a preferred embodiment, the elastic hoop and the extension rod are made of carbon fiber profiles. The ultrahigh tensile strength and the smaller mass of the carbon fiber material can be effectively utilized, and the dead weight of the scaffold is reduced while the bearing capacity of the elastic hoop is ensured.
The invention provides a method for lengthening a scaffold steel pipe 4, which comprises the following steps:
s1: a quick-release connecting device for a scaffold extension rod is provided, and an accommodating through groove 100 at the first end of an elastic hoop 1 is sleeved at one end of a steel pipe 4 of a scaffold.
S2: the extension bar 5 is inserted into the elastic band 1 such that the lifting spring 3 of the first end of the elastic band 1 is supported to the extension bar 5.
S3: the inserting depth of the extension bar 5 is adjusted, so that the length of the lengthened steel pipe 4 meets the requirement.
S4: install quick detach locking structure 2 on elastic hoop 1, quick detach locking structure 2 drawknot is between the relative both sides of the breach 10 of elastic hoop 1 for the inner wall of elastic hoop 1 presses the length of the outer wall of butt extension bar 5 with locking extension bar 5 and fixed steel pipe 4 after the extension.
Specifically, the connecting bolt is arranged in the through holes of the two lug plates in a penetrating way, so that the head part of the connecting bolt is abutted against the outer side of one lug plate;
the limiting piece is arranged at one end, far away from the head, of the screw rod of the connecting bolt in a penetrating way and abuts against the outer side of the other ear plate;
the axle of the cam is rotatably inserted into the axle hole of the screw rod of the connecting bolt, the cam is rotated, the limiting part moves towards the head of the connecting screw rod, and then the elastic hoop deforms to clamp or wrap the outer side wall of the extension rod, so that the extension rod is locked on the steel pipe of the scaffold.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (7)
1. A quick release connecting device for a scaffold extension bar, comprising:
the scaffold comprises an elastic hoop for the extension rod to be inserted, wherein the elastic hoop is provided with a first end and a second end which are opposite, one side of the elastic hoop is provided with a through notch which penetrates through the two ends of the elastic hoop, the end face of the first end of the elastic hoop is provided with an accommodating through groove which is used for sleeving one end of a steel pipe of the scaffold, and the accommodating through groove is arranged along the circumferential direction of the elastic hoop;
the quick-release locking structure is pulled and connected to two opposite sides of the notch of the elastic hoop so that the inner wall of the elastic hoop is pressed against the outer wall of the extension rod; and
a lift spring for supporting the extension bar is mounted within the first end of the elastic cuff.
2. The quick release attachment apparatus for a scaffolding extension bar of claim 1 wherein the lift spring is an inverted conical spring.
3. The quick release coupling device for a scaffolding extension bar of claim 1, wherein the width of the receiving channel is greater than the thickness of the wall of the steel tube.
4. The quick release connecting device for a scaffold extension rod according to claim 1, wherein two ear plates are connected to the outside of the elastic hoop, the two ear plates are respectively disposed on two opposite sides of the notch, the ear plates are perforated, and the quick release locking structure comprises:
the screw rod of the connecting bolt penetrates through the through holes of the two lug plates, and the head of the connecting bolt is pressed against the outer side of one lug plate;
the limiting piece is provided with a first side and a second side which are opposite, the limiting piece is provided with a through hole which penetrates through the first side and the second side of the limiting piece, the screw rod is arranged in the through hole in a penetrating manner, and the first side of the limiting piece is pressed against the outer side of the other ear plate; and
the circumference of the cam is pressed against the second side of the limiting part, the cam is connected with a wheel shaft, one end of the screw rod, which is far away from the head, is provided with a shaft hole, and the wheel shaft is rotatably inserted into the shaft hole.
5. The quick release coupling device for a scaffolding extension bar of claim 4, wherein a driving pawl is attached to a circumferential surface of the cam.
6. The quick release coupling for a scaffolding extension bar of claim 1, wherein the resilient collar is a carbon fibre resilient collar.
7. A method for lengthening a scaffold steel pipe is characterized by comprising the following steps:
providing a quick release connecting device for a scaffold extension rod according to any one of claims 1 to 6, sleeving the accommodating through groove at the first end of the elastic hoop at one end of the steel pipe of the scaffold;
inserting an extension bar into an elastic hoop so that a lifting spring at a first end of the elastic hoop is supported on the extension bar;
adjusting the inserting depth of the extension bar to enable the length of the lengthened steel pipe to meet the requirement;
and a quick-release locking structure is arranged on the elastic hoop and is tied between the two opposite sides of the notch of the elastic hoop, so that the inner wall of the elastic hoop presses and abuts against the outer wall of the extension bar to lock the extension bar and fix the length of the extended steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111136394.XA CN113700284B (en) | 2021-09-27 | 2021-09-27 | Quick-release connecting device for scaffold extension rod and scaffold steel tube extension method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111136394.XA CN113700284B (en) | 2021-09-27 | 2021-09-27 | Quick-release connecting device for scaffold extension rod and scaffold steel tube extension method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113700284A true CN113700284A (en) | 2021-11-26 |
| CN113700284B CN113700284B (en) | 2022-10-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111136394.XA Active CN113700284B (en) | 2021-09-27 | 2021-09-27 | Quick-release connecting device for scaffold extension rod and scaffold steel tube extension method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB334312A (en) * | 1929-06-24 | 1930-09-04 | Robert Allen | Improvements in telescopic stands or supports for seats, stools, cameras and other articles |
| JPH10336864A (en) * | 1997-05-29 | 1998-12-18 | Kanegafuchi Chem Ind Co Ltd | Joint for connection |
| CN201627790U (en) * | 2010-02-01 | 2010-11-10 | 林春火 | Improved structure of quick disassembling tube bundle |
| EP2687733A1 (en) * | 2012-07-18 | 2014-01-22 | Campion Production ApS | Clamping fitting for telescopic tent poles |
| CN106801764A (en) * | 2017-02-08 | 2017-06-06 | 南通永大管业股份有限公司 | Direct insertion fast connecting joint for pipe |
| CN112093027A (en) * | 2020-10-20 | 2020-12-18 | 南京航空航天大学苏州研究院 | Can locking unmanned aerial vehicle horn quick detach mechanism |
| US20200407990A1 (en) * | 2018-02-26 | 2020-12-31 | Safetyrespect Ab | Support post |
-
2021
- 2021-09-27 CN CN202111136394.XA patent/CN113700284B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB334312A (en) * | 1929-06-24 | 1930-09-04 | Robert Allen | Improvements in telescopic stands or supports for seats, stools, cameras and other articles |
| JPH10336864A (en) * | 1997-05-29 | 1998-12-18 | Kanegafuchi Chem Ind Co Ltd | Joint for connection |
| CN201627790U (en) * | 2010-02-01 | 2010-11-10 | 林春火 | Improved structure of quick disassembling tube bundle |
| EP2687733A1 (en) * | 2012-07-18 | 2014-01-22 | Campion Production ApS | Clamping fitting for telescopic tent poles |
| CN106801764A (en) * | 2017-02-08 | 2017-06-06 | 南通永大管业股份有限公司 | Direct insertion fast connecting joint for pipe |
| US20200407990A1 (en) * | 2018-02-26 | 2020-12-31 | Safetyrespect Ab | Support post |
| CN112093027A (en) * | 2020-10-20 | 2020-12-18 | 南京航空航天大学苏州研究院 | Can locking unmanned aerial vehicle horn quick detach mechanism |
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| Publication number | Publication date |
|---|---|
| CN113700284B (en) | 2022-10-18 |
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