CN110820564A - Liftable and openable bent cap construction overhaul multipurpose platform - Google Patents

Abstract

The invention relates to a multi-purpose platform for the construction and maintenance of cover beams that can be lifted and opened, including a bottom fixed platform, an opening and closing bracket system and a maintenance anchor system respectively arranged on the bottom fixed platform, and a lift connected with the bottom fixed platform. Suspension system. Compared with the prior art, the present invention has a simple and novel structure and is easy to assemble and disassemble. By integrating the construction platform and the maintenance platform, it is beneficial to save construction support materials, reduce the workload of the construction process, and further improve the work efficiency of the construction process and the maintenance process. As well as the construction quality, it has a certain degree of generalizability.

Description

A liftable and openable cover beam construction and maintenance multi-purpose platform

technical field

The invention belongs to the technical field of bridge construction, and relates to a multi-purpose platform for construction and maintenance of cover beams that can be lifted and opened.

Background technique

At present, my country's construction engineering field presents the characteristics of large construction volume, high quality requirements, rising labor costs, and high energy conservation and environmental protection requirements. The use of prefabricated buildings can alleviate the above problems to a certain extent, and realize the transformation and upgrading of the construction industry and the modernization of the construction industry. The prefabricated independent pier cover beam mostly adopts post-tensioning technology, which requires manual operation of prestressed tensioning platform. In the past, scaffolding was often used. When the cover beam is high, it is sometimes necessary to use full-scale scaffolding. If the bearing capacity of the foundation is low, it needs to be dealt with. Not only is the safety and stability poor, but also the demand for steel pipes and section steel is large, and the construction cost is high; The process of erecting and dismantling scaffolds and hanging baskets requires a lot of time and manpower, so the construction is cumbersome, wastes engineering time, labor-intensive, and work efficiency is low. If the platform can be lifted and suspended, these bracket steels can be saved.

At the same time, in order to detect and maintain the components such as the top support of the cover beam in time, a permanent maintenance platform needs to be arranged on the side of the cover beam. However, the function of the maintenance platform often does not match its cost, and the structure tends to be simplified during construction, which increases the risk factor of the platform to a certain extent. .

The functions of a separate maintenance platform and a tension platform are limited, so a composite platform that can be raised and lowered with a simpler structure and the lowest possible cost, which can integrate the prestressed tension construction platform and the maintenance platform into one, is required. It can save a lot of steel for platforms and brackets, reduce platform erection time, and improve construction efficiency and construction quality.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a multi-purpose platform for the construction and maintenance of cover beams that can be lifted and closed in order to overcome the defects of the above-mentioned prior art. After construction, it can be raised to both sides of the cover beam and fixed as a maintenance platform, so as to reduce the material and time for building the platform, and improve the construction efficiency and construction quality.

The object of the present invention can be realized through the following technical solutions:

A multi-purpose platform for construction and maintenance of cover beams that can be lifted and opened, including a bottom fixed platform, an opening and closing bracket system and a maintenance anchoring system respectively arranged on the bottom fixed platform, and a lifting suspension system connected with the bottom fixed platform. .

Further, the bottom fixed platform includes two bottom fixed frames respectively arranged on both sides of the cover beam, and the said opening and closing bracket system is arranged between the two bottom fixed frames.

By merging the opening and closing support system, the opening and closing support system and the two bottom fixed frames together form a construction platform, which can be used for prestressed tension construction of the cover beam; the opening and closing support system is separated, and the 2 The bottom fixed frames are respectively raised to both sides of the cover beam, and the bottom fixed frame is fixed on the cover beam through the maintenance anchoring system, which can be used as a maintenance platform for the staff to repair the cover beam.

的钢管穿插组装而成，立柱等间距布设。As a preferred technical solution, guardrails are provided outside the construction platform and the maintenance platform.

The steel pipes are interspersed and assembled, and the columns are arranged at equal intervals.

As a preferred technical solution, the two bottom fixed frames are arranged symmetrically with respect to the cover beam.

Further, the length of the bottom fixed frame is 4-6 m longer than the length of the cover beam, and the width of the bottom fixed frame is 1.5-1.6 m.

Further, the bottom fixed frame includes a plurality of longitudinal beams arranged parallel to the length direction of the cover beams and a transverse beam mechanism arranged perpendicular to the longitudinal beams, and the transverse beam mechanism includes a pair of second transverse beam assemblies and a plurality of transverse beams. The first transverse beams are arranged in parallel between two second transverse beam assemblies, and the second transverse beam assemblies include a plurality of second transverse beams.

The distribution range of the first transverse beam along the length direction of the longitudinal beam is adapted to the length of the cover beam, the second transverse beam is arranged at both ends of the distribution range of the first transverse beam, and the plurality of first transverse beams are arranged at both ends of the distribution range of the first transverse beam. The spaces and the plurality of second transverse beams are all arranged at equal intervals, and the distance between the plurality of first transverse beams is greater than the distance between the plurality of second transverse beams.

As a preferred technical solution, the longitudinal beams are made of I-12.6 steel, the transverse beams are made of I-25 steel, the bottom fixed frame includes at least three longitudinal beams arranged side by side, and the bottom fixed frame is provided with There is a longitudinal support pedal, the longitudinal support pedal is fixed on the bottom fixed frame through a thin wire rope, and an opening is also provided on the longitudinal support pedal to facilitate the installation of other components.

Further, the opening and closing bracket system includes two opening and closing bracket assemblies that are respectively arranged between the two bottom fixed frames in tandem, and the said opening and closing bracket assembly includes one end of the two bottom fixed frames respectively. Hinged 2 opening and closing brackets.

The two opening and closing brackets can be respectively flipped around the side of the corresponding bottom fixed frame near the cover beam, and the two flipped open and closed brackets are joined together to form a horizontal platform, and the two horizontal platforms and the two bottom fixed frames are common. A prestressed tension construction platform is formed.

At the same time, the opening and closing bracket can also be turned to a position perpendicular to the bottom fixed frame to be used as a guardrail for the detection platform.

Further, the structure of the opening and closing bracket is a truss structure.

The opening and closing bracket is made of a plurality of welded steel pipes and forms a truss structure, so that the opening and closing bracket has better supporting strength and lighter structural quality.

钢管。As a preferred technical solution, the steel pipe used on the opening and closing bracket is Q235

Steel Pipe.

Further, a hinge support is provided between the opening and closing support and the corresponding bottom fixed frame, and the opening and closing support is hinged with the bottom fixed frame through the hinge support;

Disk buckles are arranged between the two opening and closing brackets in the opening and closing bracket assembly, and are detachably connected through the plate buckles.

The opening and closing bracket is turned around the hinge support to a horizontal position, and then connected with another opening and closing bracket through a disk buckle to form a horizontal platform.

As a preferred technical solution, the lateral platform is provided with a lateral support pedal, which is fixedly connected to the opening and closing bracket through a thin wire.

Further, the hinge support includes a base set on the bottom fixed frame, a rotating shaft set on the base, a sleeve set on the rotating shaft, a connecting rod set on the sleeve, and a base set on the base and located in the The limit plates on both sides of the rotating shaft, one end of the connecting rod is fixedly connected with the corresponding opening and closing bracket.

The sleeve can rotate around the rotating shaft, thereby driving the connecting rod and the opening and closing bracket fixedly connected with the connecting rod to rotate, thereby realizing the flipping of the opening and closing bracket around the bottom fixed frame; the limit plate is used to limit the movement of the connecting rod. When the opening and closing bracket is turned to a horizontal position, the limit plate can also be used as a supporting plate to support the connecting rod and the opening and closing bracket.

As a preferred technical solution, at least two limit plates are respectively arranged on both sides of the rotating shaft.

As a preferred technical solution, the longitudinal beams on the bottom fixed frame are arranged on the transverse beams, and the bottom fixed frame is provided with a plurality of hinge supports by means of bolt connection or welding connection, and the plurality of hinge supports are provided with on the longitudinal beams, and are respectively located just above the corresponding second transverse beams.

Further, the hoisting and suspending system includes a plurality of hoists respectively arranged on the cover beams and a transmission rope arranged between the hoists and the bottom fixed platform.

The multiple hoists can lift or lower the platform by synchronously taking up ropes upwards or releasing ropes downwards, so as to adapt to the prestressed beam tensioning construction of different positions and lines and necessary component transportation.

的钢丝绳，所述的钢丝绳至少为4根，所述的底层固定框架上设有与钢丝绳相适配的吊点，所述的钢丝绳的一端系于相应的吊点上，另一端绕设于相应的卷扬机上；所述的吊点分别位于底层固定框架最外侧的纵向梁上，并关于盖梁的横向及纵向中心向对称布设。As a preferred technical solution, the transmission rope adopts

There are at least 4 steel wire ropes, and the bottom fixed frame is provided with a hanging point that matches the wire rope, one end of the wire rope is tied to the corresponding hanging point, and the other end is wound around the corresponding hanging point. on the hoist; the lifting points are respectively located on the outermost longitudinal beams of the bottom fixed frame, and are symmetrically arranged with respect to the lateral and longitudinal center of the cover beam.

Further, the maintenance anchoring system includes a plurality of anchoring plates arranged on the bottom fixed frame and matched with the cover beam, and the anchoring plates are provided with reserved holes.

The plurality of anchor plates are respectively welded on the longitudinal beams of the bottom fixed frame close to the cover beam in the vertical direction, and are arranged at equal intervals in the horizontal direction; when the two bottom fixed frames are respectively raised to the two sides of the cover beam , By passing the bolts through the reserved holes on the anchor plate and fixing them on the cover beam, the bottom fixed frame is used as the cover beam maintenance platform to be fixedly connected with the cover beam.

As a preferred technical solution, the anchor plate is composed of welded steel plates or 12.6-shaped steel.

Working principle: When using, first assemble the bottom fixed frame and the opening and closing bracket on the ground, lay the supporting pedal, install the guardrail, determine the hanging point and the position of the hoist, put down the opening and closing bracket, and open and close the two through the buckle fastener. The brackets are connected to form a horizontal platform, and together with the bottom fixed frame, a prestressed tension construction platform is formed, and then the construction platform is lifted and hoisted to the outer periphery of the cover beam by the winch and the transmission rope, and the cover beam prestressed tension construction is carried out;

When the prestressed tensioning construction is completed, lower the construction platform to the ground, remove the buckle fasteners between the opening and closing brackets and the guardrail on the opening and closing brackets, and then turn the opening and closing brackets 90° to be perpendicular to the bottom fixed frame And fix it, or turn the opening and closing bracket 180° and place it on the bottom fixed frame, and then lift the two bottom fixed frames to the two sides of the cover beam respectively through the winch or the car crane and the winch, and anchor them on the anchoring system of the maintenance platform. On the cover beam, a ladder is added, and the platform is converted into a maintenance platform;

In addition, when converting into a maintenance platform, the opening and closing brackets can be removed together with the hinge support and additional protection measures are added, and the removed brackets can be reused to other platforms; It is converted into a prestressed tension construction platform again for overhauling the prestressed tendons and the lateral sides of the cover beams.

Compared with the prior art, the present invention has the following characteristics:

1) Compared with traditional construction scaffolding and construction maintenance platform, the present invention has a simple and novel structure, is easy to assemble and disassemble, and has a certain degree of generalizability;

2) The present invention integrates the construction platform and the maintenance platform, which is beneficial to save construction support materials, reduce the workload of the construction process, and further improve the work efficiency and construction quality of the construction process and the maintenance process.

Description of drawings

Fig. 1 is the top-view structure schematic diagram of bottom fixed platform and opening and closing support system in the present invention;

Fig. 2 is the top-view structure schematic diagram of the opening and closing bracket system;

Figure 3 is a left side view of a liftable and openable cover beam construction and maintenance multi-purpose platform in the present invention when the open and close support is erected;

Fig. 4 is the structural representation of the hoist that is arranged on the cover beam I-beam;

Fig. 5 is the structural representation of hinge support;

Description of marks in the figure:

1- bottom fixed frame, 101-longitudinal beam, 102-first transverse beam, 103-second transverse beam, 2-opening and closing bracket, 3-hinge support, 301-base, 302-rotating shaft, 303-sleeve, 304-limiting plate, 305-connecting rod, 306-base bolt, 4-hoist, 5-transmission rope, 6-anchor plate, 7-I-beam, 8-guardrail.

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. This embodiment is implemented on the premise of the technical solution of the present invention, and provides a detailed implementation manner and a specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

Example 1:

As shown in Figure 3, a multi-purpose platform for construction and maintenance of cover beams that can be lifted and opened, includes a bottom fixed platform, an opening and closing bracket system and a maintenance anchor system respectively set on the bottom fixed platform, and a transmission with the bottom fixed platform. Connected hoist suspension system.

的钢管穿插组装而成的护栏8，护栏立柱等间距布设。Among them, the perimeter of the bottom fixed platform is welded with a column made of I 12.6 steel and

The guardrail 8 is assembled by interspersing the steel pipes, and the guardrail columns are arranged at equal intervals.

The bottom fixed platform includes two bottom fixed frames 1 symmetrically arranged on both sides of the cover beam. The length of each bottom fixed frame 1 is 4-6m longer than that of the cover beam, and the width is 1.5-1.6m.

The bottom fixed frame 1 as shown in FIG. 1 includes three longitudinal beams 101 made of I-12.6 section steel arranged parallel to the length direction of the cover beams and a plurality of transverse beams made of I-25 section steel arranged perpendicular to the longitudinal beams 101 The transverse beam mechanism includes a pair of second transverse beam assemblies and a plurality of first transverse beams 102 arranged in parallel between the two second transverse beam assemblies at equal intervals. The second transverse beam assembly includes a plurality of second transverse beam assemblies arranged at equal intervals. The transverse beam 103, the distribution range of the first transverse beam 102 along the longitudinal direction of the longitudinal beam 101 is adapted to the length of the cover beam, the second transverse beam 103 is arranged at both ends of the distribution range of the first transverse beam 102, and a plurality of first transverse beams 102 are arranged. The spacing between the transverse beams 102 is greater than the spacing between the plurality of second transverse beams 103 .

钢管制成的桁架结构，并分别通过相应的铰支座3实现绕相应的底层固定框架1上靠近盖梁一侧翻转，翻转至水平位置的2个开合支架2通过盘扣拼接组成横向平台。在2个横向平台与2个底层固定框架1上铺设支撑踏板，并通过细钢丝固定，组成预应力张力施工平台。如图5所示，铰支座3包括设于底层固定框架1上的底座301、设于底座301上的转轴302、套设于转轴302上的套筒303、设于套筒303上的连接杆305以及分别设于底座301上并位于转轴302两侧3个限位板304，连接杆305的一端与相应的开合支架2固定连接。The opening and closing bracket system includes two opening and closing bracket assemblies which are respectively arranged between the two bottom fixed frames 1 in tandem. The 2 opening and closing brackets 2. These 2 opening and closing brackets 2 are made of Q235

The truss structure is made of steel pipes, and is flipped around the corresponding bottom fixed frame 1 on the side close to the cover beam through the corresponding hinge supports 3 respectively, and the two opening and closing brackets 2 flipped to the horizontal position are spliced to form a horizontal platform through the buckle. . Support pedals are laid on 2 lateral platforms and 2 bottom fixed frames 1 and fixed by thin steel wires to form a prestressed tension construction platform. As shown in FIG. 5 , the hinge support 3 includes a base 301 disposed on the bottom fixed frame 1 , a rotating shaft 302 disposed on the base 301 , a sleeve 303 sleeved on the rotating shaft 302 , and a connection disposed on the sleeve 303 The rod 305 and the three limiting plates 304 are respectively disposed on the base 301 and located on both sides of the rotating shaft 302 , and one end of the connecting rod 305 is fixedly connected with the corresponding opening and closing bracket 2 .

的钢丝绳，钢丝绳的一端系于底层固定框架1上的相应吊点上，另一端绕设于相应的卷扬机4上，4个卷扬机4同步工作，实现平台的稳定升降；吊点分别位于底层固定框架1最外侧的纵向梁101上，并且4个吊点及卷扬机4分别关于盖梁的横向及纵向中心线对称布设。As shown in Figure 4, the hoisting and suspension system includes four hoists 4 which are respectively arranged on the I-beam 7 on both sides of the top of the cover beam, and four transmission ropes 5 which are respectively arranged between the corresponding hoists 4 and the bottom fixed platform, Transmission rope 5 adopts

One end of the wire rope is tied to the corresponding lifting point on the bottom fixed frame 1, and the other end is wound on the corresponding winch 4, and the four winches 4 work synchronously to realize the stable lifting of the platform; the lifting points are respectively located on the bottom fixed frame 1. On the outermost longitudinal beam 101, and the 4 lifting points and the hoisting machine 4 are respectively arranged symmetrically with respect to the lateral and longitudinal centerlines of the cover beam.

The maintenance anchoring system includes a plurality of anchoring plates 6 arranged on the bottom fixed frame 1 and matched with the cover beams. The anchoring plates 6 are composed of welded steel plates or 12.6 steel and have a plurality of reserved holes. A plurality of anchor plates 6 are respectively welded to the longitudinal beams 101 of the bottom fixed frame 1 near the cover beam in the vertical direction, and are arranged at equal intervals in the horizontal direction.

Working principle: When using, first assemble the bottom fixed frame 1 and the opening and closing bracket 2 on the ground, install the guardrail 8, determine the placement position of the lifting point and the hoist 4, put down the opening and closing bracket 2, and connect the two The combined support 2 is connected to form a horizontal platform, and support pedals are laid on the bottom fixed frame 1 and the horizontal platform to form a prestressed tension construction platform, and then the construction platform is lifted and hoisted to the outer circumference of the cover beam by the hoist 4 and the transmission rope 5. Cover beam prestressed tension construction;

When the prestressed tensioning construction is completed, lower the construction platform to the ground, remove the buckle fasteners between the opening and closing brackets 2 and the guardrail of the opening and closing brackets 2, and then turn the opening and closing brackets 2 by 90° to be fixed with the bottom layer. The frame 1 is vertical and fixed, or the opening and closing bracket 2 is rotated 180° and placed on the bottom fixed frame 1, and then the two bottom fixed frames 1 are lifted to the two bottom of the cover beam by the winch 4 or the car crane and the winch 4 respectively. On the side, the maintenance platform is anchored on the cover beam through the maintenance platform anchoring system, and a climbing ladder is added to obtain the maintenance platform;

In addition, when the construction platform is converted into a maintenance platform, the opening and closing brackets can be completely removed together with the hinge support, and protective measures can be added, and the removed brackets can be reused to other platforms; Afterwards, it can be converted into a prestressed tension construction platform again for overhauling the prestressed tendons and the lateral sides of the cover beams.

The foregoing description of the embodiments is provided to facilitate understanding and use of the invention by those of ordinary skill in the art. It will be apparent to those skilled in the art that various modifications to these embodiments can be readily made, and the generic principles described herein can be applied to other embodiments without inventive step. Therefore, the present invention is not limited to the above-mentioned embodiments, and improvements and modifications made by those skilled in the art according to the disclosure of the present invention without departing from the scope of the present invention should all fall within the protection scope of the present invention.

Claims (10)

1. a multi-purpose platform for construction and maintenance of cover beams that can be lifted and closed, is characterized in that, this device comprises bottom fixed platform, opening and closing support system and maintenance anchoring system respectively arranged on bottom fixed platform, and fixed with bottom layer. Lifting suspension system connected by platform drive. 2. A kind of liftable and openable cover beam construction and maintenance multipurpose platform according to claim 1, is characterized in that, described bottom fixed platform comprises 2 bottom fixed frames ( 1), the opening and closing bracket system is arranged between the two bottom fixed frames (1). 3. A kind of liftable and openable cover beam construction and maintenance multi-purpose platform according to claim 2, characterized in that, the length of the bottom fixed frame (1) is 4-6m longer than the cover beam length, so the The width of the bottom fixed frame (1) is 1.5-1.6m. 4. The multi-purpose platform for lifting and closing the cover beam construction and maintenance according to claim 3, wherein the bottom fixed frame (1) comprises a plurality of longitudinal directions parallel to the length direction of the cover beam A beam (101) and a transverse beam mechanism arranged perpendicular to the longitudinal beam (101), the transverse beam mechanism comprising a pair of second transverse beam assemblies and a plurality of first transverse beams arranged in parallel between the two second transverse beam assemblies A beam (102), the second transverse beam assembly includes a plurality of second transverse beams (103). 5. A kind of liftable and openable cover beam construction and maintenance multi-purpose platform according to claim 2, is characterized in that, described open and close bracket system comprises a front and a back are respectively provided in 2 bottom fixed frames ( 1) between two opening and closing bracket assemblies, the said opening and closing bracket assembly includes two opening and closing brackets (2) hinged with one end of the two bottom fixed frames (1) respectively. 6 . The multi-purpose platform for construction and maintenance of cover beams that can be lifted and opened according to claim 5 , wherein the structure of the opening and closing bracket ( 2 ) is a truss structure. 7 . 7. A multi-purpose platform for lifting and closing cover beam construction and maintenance according to claim 5, characterized in that, between the opening and closing bracket (2) and the corresponding bottom fixed frame (1) There is a hinge support (3), and the opening and closing support (2) is hinged with the bottom fixed frame (1) through the hinge support (3); Disk buckles are arranged between the two opening and closing brackets (2) in the opening and closing bracket assembly, and are detachably connected through the plate buckles. 8 . The multi-purpose platform for lifting and closing cover beam construction and maintenance according to claim 7 , wherein the hinge support ( 3 ) comprises a base set on the bottom fixed frame ( 1 ). 9 . (301), a rotating shaft (302) set on the base (301), a sleeve (303) set on the rotating shaft (302), a connecting rod (305) set on the sleeve (303), and a connecting rod (305) set on the base (301) Limiting plates (304) located on both sides of the rotating shaft (302), one end of the connecting rod (305) is fixedly connected with the corresponding opening and closing bracket (2). 9 . The multi-purpose platform for lifting and closing the cover beam for construction and maintenance according to claim 2 , wherein the lifting and suspending system comprises a plurality of hoists (4) respectively arranged on the cover beam. 10 . and a transmission rope (5) arranged between the hoisting machine (4) and the bottom fixed platform. 10. A multi-purpose platform for lifting and closing cover beam construction and maintenance according to claim 2, characterized in that the maintenance anchoring system comprises a fixed frame (1) on the bottom layer and is adapted to the cover beam A plurality of anchoring plates (6) are provided, and the anchoring plates (6) are provided with reserved holes.

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