CN207363228U - Fix self-locking type steel pipe scaffold - Google Patents

Abstract

The utility model discloses a clamping and self-locking steel pipe scaffolding. The clamping and self-locking steel pipe scaffolding includes: a vertical rod, one end of which is provided with an enlarged head, and the outer periphery of the enlarged head is uniformly distributed with a plurality of bolt holes along the circumferential direction, and the vertical rod connected by the long connection is fixed by tightening the first bolt; Discs with sockets are fixed at the outer circumference of the rods; horizontal rods are provided with horizontal opening chucks at both ends, and the horizontal opening chucks are pierced with horizontal pins connected with the discs of the vertical rods; And the scissors support, comprising: oblique bar, scissors opening chuck and scissors pin, described oblique rod is fixed with scissors opening chuck by second bolt, and described scissors opening chuck is stretched into behind the disc of adjacent vertical bar , insert the scissor pins into the disc to fix it. The clamping and self-locking steel pipe scaffolding has high safety performance and convenient operation, and achieves the purpose of reducing the usage of on-site turnover materials.

Description

Clamp self-locking steel pipe scaffolding

technical field

The utility model relates to the field of scaffolding, in particular to a clamping and self-locking steel pipe scaffolding.

Background technique

In building construction, scaffolding is a very important construction tool. During the entire construction period, scaffolding is widely used in various stages of construction, and has the characteristics of long service life and high frequency of use. Scaffolding is not only closely related to construction quality, but also affects construction safety, construction progress, construction cost and other factors, so the choice of scaffolding type has become an important factor for the success or failure of project operation.

At present, the types of scaffolds commonly used in construction in my country are divided into: fastener-type steel pipe scaffolding, bowl-type steel pipe scaffolding, disc-type steel pipe scaffolding, wheel-type steel pipe scaffolding, and door-type scaffolding. Among them, the internal and external scaffolding and formwork in building construction are still dominated by fastener-type steel pipe scaffolding, which still accounts for more than half of the construction market. Poor performance, long construction time and other shortcomings, it is rarely used in foreign developed countries. For example, the traditional fastener-type steel pipe scaffolding pole is connected by butt fasteners, but in the past engineering application process, the connection of butt fasteners is prone to deflection. When the upper part is loaded, the connection will produce up and down steel pipe bending Folding and losing stability will eventually lead to the overall collapse of the scaffold and cause safety accidents. For the current engineering structure with high floor height, large component cross-sectional size, large structural span, and large construction load, it is more and more difficult for fastener-type steel pipe scaffolding to meet the construction requirements. Require. The horizontal bar and the vertical bar node of the traditional fastener-type steel pipe scaffolding are connected by right-angle fasteners. The horizontal bar mainly provides horizontal constraints for the vertical bar, reduces the calculated length of the vertical bar, and improves the vertical bearing capacity. Since the span of the horizontal bar must not be less than the distance between the three-span vertical bars, the length of the horizontal bar is generally about 4m, and two people are required to install and fix it at the same time during installation. The traditional fastener-type steel pipe scaffold scissors erection method is to use ordinary steel pipes and rotating fasteners to make fixed connections with the vertical poles. The length of the steel pipes is generally 6m. Less than 1m, and set 3 rotating fasteners at equal intervals. Due to the long length of the steel pipe, it is relatively troublesome for workers to fix it during the erection process, and it is necessary to choose a fixed position according to the actual number of poles, the distance between the poles and the height of each floor, and the construction efficiency is not high.

Among the construction safety accidents that caused serious consequences and bad social impact in the past, scaffold collapse accidents accounted for a large proportion. With the continuous development of my country's economic construction and the rapid development of the construction industry, how to improve the safety, convenience and economy of on-site scaffolding, and ensure that the probability of construction safety accidents caused by scaffolding is effectively controlled during the construction and production process. Not only to control the source of danger to the lowest level, but also to improve the convenience of labor personnel during construction, which is an important issue that needs to be solved urgently.

The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and should not be considered as an acknowledgment or in any form to imply that the information constitutes the prior art already known to those skilled in the art.

Utility model content

The purpose of this utility model is to provide a simple and reasonable clamping and self-locking steel pipe scaffolding. The clamping and self-locking steel pipe scaffolding analyzes the scaffolding material, vertical pole lapping method, The rational design and optimization of the connection mode of the main node of the cross bar and the arrangement and connection of the scissor braces make this new type of scaffolding have high safety performance and convenient operation, and achieve the purpose of reducing the amount of on-site turnover materials.

In order to achieve the above purpose, the utility model provides a clamping self-locking steel pipe scaffolding, comprising: a vertical rod, one end of which is provided with an enlarged head, and the outer periphery of the enlarged head is uniformly distributed with a plurality of bolt holes along the circumferential direction, through which the first bolt Tighten and fix the vertical rod connected by the long connection; the outer peripheral distance of the vertical rod is fixed with a disk with a jack; The horizontal pin connected by the disc of the vertical bar; and the scissors support, including: a slanting bar, a scissors opening clamp and a scissors pin, the slanting bar is fixed with the scissors opening clamp by a second bolt, and the scissors opening clamps After the head extends into the disc of the adjacent pole, insert the scissors pin into the disc to fix it.

Preferably, in the above technical solution, discs with sockets are welded at intervals of 500mm on the outer periphery of the pole.

Preferably, in the above technical solution, a plurality of bolt holes are opened at a distance of 50 mm from the end of the vertical rod.

Preferably, the above technical solution further includes: a base assembly and a jacking assembly, the base assembly is arranged at the bottom end of the pole, specifically including: an adjustable base and a first adjustment nut; the jacking assembly is arranged at the bottom of the vertical pole The top end of the rod specifically includes: an adjustable jacking bracket and a second adjusting nut.

Preferably, in the above technical solution, the material of the vertical bar, the horizontal bar, the scissor support, the base assembly and the jacking assembly is Q345.

Compared with the prior art, the utility model has the following beneficial effects: the clamping and self-locking steel pipe scaffold can analyze the scaffolding material, the lap joint mode of the vertical pole, and the connection of the main node of the crossbar respectively through the reasonable stress analysis of the scaffolding system. Reasonable design and optimization of the method and scissor support arrangement and connection make this new type of scaffolding have high safety performance and convenient operation, and achieve the purpose of reducing the amount of on-site turnover materials.

1. Scaffold material properties:

The clamping self-locking steel pipe scaffolding adopts Q345 steel with better mechanical properties. Under the same force, the spacing between the scaffolding poles is increased, the amount of scaffolding is reduced, and the construction cost is reduced.

2. Pole extension connection

The lengthening method of the vertical pole of the clamping self-locking steel pipe scaffolding is to expand the end and fix the bolt to ensure the effective fixing of the length of the vertical pole. When the formwork support frame is erected, the horizontal pole can be removed in advance. Only the poles are left for support, which improves the turnover rate of materials.

3. Self-locking connection between horizontal bar and vertical bar node

The clamping self-locking steel pipe scaffolding can be fixed and locked by the vertical gravity of the pins on the chuck when a load is applied to the frame or a dynamic load shakes the frame, and it will not be weakened due to loose fixation. Frame load capacity and safety performance.

4. How to set up scissors support

The clamping self-locking steel pipe scaffold adopts a special scissor brace form. Compared with the existing common scaffolding, the scissor brace of the clamping self-locking steel pipe scaffolding is set in the plane of the vertical bar and the horizontal bar, and the rigidity in the plane is greater. It can provide a strong bearing capacity for the frame.

Description of drawings

Fig. 1 is a structural schematic diagram of the clamping and self-locking steel pipe scaffolding of the present invention.

Detailed ways

The specific embodiments of the present utility model will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present utility model is not limited by the specific embodiments.

Unless expressly stated otherwise, throughout the specification and claims, the term "comprise" or variations thereof such as "includes" or "includes" and the like will be understood to include the stated elements or constituents, and not Other elements or other components are not excluded.

As shown in FIG. 1 , the clamping and self-locking steel pipe scaffold according to the specific embodiment of the present invention specifically includes: a vertical pole 1 , a horizontal pole 2 , a scissor support 3 , a base assembly and a jacking assembly. Among them, the lengthening method between the vertical poles 1 of the clamping self-locking steel pipe scaffolding is the form of expanding the ends and fixing the bolts to ensure the effective fixing of the lengthening of the vertical poles. When setting up the formwork support frame, it can The horizontal rods are removed in advance, and only the vertical rods are left for support, so as to improve the turnover rate of materials. The joint between the horizontal bar 2 and the vertical bar 1 adopts a self-locking connection in which the pins on the chuck are inserted into the disc. When a load is applied to the frame or a dynamic load occurs to shake the frame, it depends on the vertical direction of the pins on the chuck. Self-fixed and locked by the action of gravity, the bearing capacity and safety performance of the frame will not be weakened due to loose fixation. The scissor brace 3 is in the same plane as the vertical bar and the horizontal bar, and has higher in-plane rigidity and stronger bearing capacity, which can provide a stronger bearing capacity for the frame body.

Specifically, one end of the vertical rod 1 is provided with an enlarged head 12, and the outer circumference of the enlarged head is evenly distributed with a plurality of bolt holes along the circumferential direction. The effective fixation can eliminate the deviation caused by the gap. When setting up the formwork support frame, the horizontal rod can be removed in advance, leaving only the vertical rod to improve the turnover rate of materials. The extension connection of the pole 1 adopts a fixing method similar to that of the wheel-buckle scaffold, and avoids that when the bottom scaffold pole of the existing wheel-buckle scaffold is inserted into the expanding head, although it can ensure that the pole is extended effectively. However, there is a gap between the pole and the expansion head, causing a slight shake between the two poles, and it cannot completely guarantee the absolute fixation of the pole.

The outer circumference of the vertical pole 1 is welded with discs 11 with jacks for connecting with the horizontal bar 2. Preferably, the outer circumference of the vertical poles 1 is welded with discs with jacks at intervals of 500mm. Preferably, A plurality of bolt holes are provided at 50 mm from the end of the vertical rod 1 .

The base assembly is arranged at the bottom of the pole 1 and specifically includes: an adjustable base 4 and a first adjustment nut 5 . The jacking assembly is arranged on the top of the pole 1 and specifically includes: an adjustable jacking 6 and a second adjusting nut 7 .

Both ends of the horizontal bar 2 are provided with horizontal opening clamps 21, which are pierced with horizontal pins. During installation and use, the horizontal opening clamps of the horizontal bar 2 extend behind the disc of the vertical bar , Insert the horizontal pin into the disc to fix it, which is very convenient to operate. When a load is applied to the frame or a dynamic load shakes the frame, even if the connection point between the horizontal bar and the vertical bar is not fixed tightly and shakes, the pins on the chuck will be fixed and locked by themselves due to the vertical gravity. It will reduce the restraint effect of the horizontal bar and not ensure the bearing and safety performance of the frame. It avoids the use of right-angle fasteners for the connection between the horizontal rod and the vertical rod of the existing fastener-type scaffolding, and the use of butt fasteners for the connection between the horizontal rod and the horizontal rod, which will be affected by the length of the horizontal rod during the erection process. Not very convenient. It also avoids the existing bowl buckle-type scaffolding. After the joints are pinched into the lower bowl buckle with horizontal cross-bar joints, the upper bowl buckle is tapped with a hammer to make it rotate and tighten, but it is easy to twist the upper bowl buckle during use. If the frame is not fastened, when the frame is stressed, the horizontal bar cannot provide sufficient horizontal restraint force, which in turn affects the load-bearing capacity of the entire frame.

The connection mode of the scissors support 3 is similar to that of the horizontal bar buckle, including: an oblique bar, a scissors opening clamp 31 and a scissors pin. The oblique bar is fixed with the scissors opening clamping head through bolts, the scissors opening clamping head extends into the disc of the adjacent vertical bar, and the scissors pin is inserted into the disc to fix it. The scissors support 3 is only connected to the adjacent vertical bar and the horizontal bar. The scissor brace is in the same plane as the vertical pole and the horizontal crossbar. It has greater rigidity in the plane, stronger bearing capacity, more convenient operation, universal flexibility, and is not affected by the vertical pole disc. It avoids that the existing fastener type scaffolding scissors brace is fixed on the side of the vertical pole. The scissors brace is not in the same plane as the vertical pole and the horizontal crossbar, and the in-plane rigidity is small and the bearing capacity is poor. It avoids that the existing fastener-type steel pipe scaffolding uses rotating fasteners to fix the scissor brace steel pipe and the vertical pole. Since the scissor brace generally uses a steel pipe of about 6m, it needs to span multiple vertical poles and multiple horizontal poles when erecting, which is more difficult to operate. inconvenient. It avoids that the existing bowl-buckle steel pipe scaffolding is not equipped with special scissors braces. The scissors braces are arranged in the same way as the fastener-type steel pipe scaffolding. more inconvenient.

Preferably, the material of the vertical pole 1, the horizontal pole 2, the scissor support 3, the base assembly and the jacking assembly of the clamping self-locking steel pipe scaffolding are all made of Q345, and hot-dip galvanizing is carried out on the surface of the scaffolding structure accessories. Improve the turnover life. Compared with Q235 steel pipe, Q345 steel pipe has great advantages in bearing load. Under the premise of bearing the same load, it can expand the spacing of vertical poles and reduce the usage of scaffolding turnover materials on site. Moreover, the production process of fastener-type steel pipe scaffolding materials is mainly at the technical level of the past twenty years. With the continuous improvement of high-quality steel manufacturing technology, Q345 steel is becoming more and more popular.

To sum up, the clamping and self-locking steel pipe scaffolding is rationally designed and optimized through the reasonable force analysis of the scaffolding system, the material of the scaffolding, the lap joint mode of the vertical poles, the connection mode of the main nodes of the crossbars, and the arrangement and connection of scissor braces. This new type of scaffold has high safety performance and convenient operation, and achieves the purpose of reducing the amount of turnover materials on site.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. These descriptions are not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can realize and utilize various exemplary embodiments of the present invention and various Different options and changes. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims (5)

1. A clamping self-locking steel pipe scaffold, characterized in that it comprises: A vertical rod, one end of which is provided with an enlarged head, and the outer circumference of the enlarged head is evenly distributed with a plurality of bolt holes along the circumferential direction, and the vertical rod connected by the length is fixed by tightening the first bolt; the outer peripheral distance of the vertical rod is fixed with sockets disc; Horizontal rods, both ends of which are provided with horizontal opening chucks, and the horizontal opening chucks are pierced with horizontal pins connected with the discs of the vertical rods; and The scissors support includes: a slanting bar, a scissors opening clamp and a scissors pin, the slanting bar is fixed to the scissors opening clamp by a second bolt, and the scissors opening clamp extends behind the disc of the adjacent vertical pole, Insert the scissor pins into the disc to secure. 2. The clamping self-locking steel pipe scaffolding according to claim 1, characterized in that, the outer periphery of the vertical rod is welded with discs with sockets at intervals of 500mm. 3. The clamping and self-locking steel pipe scaffolding according to claim 1, wherein the plurality of bolt holes are opened at a distance of 50 mm from the end of the vertical pole. 4. The clamping and self-locking steel pipe scaffolding according to claim 1, further comprising: a base assembly and a jacking assembly, the base assembly is arranged at the bottom of the pole, specifically including: an adjustable base and The first adjusting nut; the jacking assembly is arranged on the top of the pole, specifically including: an adjustable jacking and a second adjusting nut. 5. The clamping and self-locking steel pipe scaffolding according to claim 4, characterized in that the materials of the vertical poles, horizontal poles, scissor braces, base components and jacking components are all Q345.