CN113047596A

CN113047596A - Using method of crawler-type operating platform for net rack construction

Info

Publication number: CN113047596A
Application number: CN202110326024.6A
Authority: CN
Inventors: 王全鑫; 孙玮晨
Original assignee: China Construction Industrial and Energy Engineering Group Co Ltd
Current assignee: China Construction Industrial and Energy Engineering Group Co Ltd
Priority date: 2021-03-26
Filing date: 2021-03-26
Publication date: 2021-06-29

Abstract

The invention discloses a using method of a crawler-type operating platform for net rack construction, which comprises the following tools: the rack comprises a primary platform and a secondary platform on the rack, wherein the primary platform comprises at least one movable carrier plate, the secondary platform comprises at least two support rods, two hooks are arranged on the support rods and are hung on the web members, scaffold rods are arranged on the support rods, and springboards are bound on the scaffold rods; constructor stands and builds the secondary platform on primary platform, then carries out the interior board installation on the secondary platform, and in the interior board installation process, the personnel of ligature springboard demolish the rear springboard along with inner panel construction speed and move to the place ahead, when the construction progress surpassed primary platform and covered the position, pull and remove the support plate to next station, promptly with primary platform impel forward, primary platform stabilizes the back, continues to impel the secondary platform forward, and the interior board installation continues to go on. Personnel construction for binding the springboards are carried out in crawler-type line production, and the crawler-type line production is matched with each other, so that the overall moving speed is high until the inner board construction is completed.

Description

Using method of crawler-type operating platform for net rack construction

Technical Field

The invention relates to the technical field of net rack roof construction.

Background

At present, in most of factory buildings with net rack steel structures, galvanized steel purlins and on-site composite profiled steel sheets are installed on the upper portions of net racks. The profiled steel sheet is an 'inverse ceiling', namely the insulation cotton and the outer plate of the roof are paved and fixed on the upper surface of the purline, and construction is completed above the roof; the roof inner panel is laid the back and is fixed below the purlin, and constructor need stand and construct in the rack during the construction. Generally, a single inner plate is 6 meters in length and is installed along the water surface direction of a slope, and self-tapping nails are fixed below purlines at the row spacing of 1.5 meters, and the arrangement direction of the self-tapping nails is vertical to the direction of slope water. When in construction, a group of 3 persons are needed and stand under the inner plate, and the width of the operating platform is required to be not less than 6 meters.

However, the terrace on the construction site is affected by the construction progress, and is not necessarily limited by the ground after construction and the condition of the terrace level, and machinery such as a wheel type lift truck cannot be used. For example, the minimum height difference of the upper chord and the lower chord of the net rack is 2.4 meters, the maximum height difference is 4.2 meters, the average height difference is 3.5 meters, the inner plate cannot be directly touched when standing on the plane of the lower chord when laid, meanwhile, the lower chord of the net rack is in a square grid shape, the length of the rod piece is 4 meters, personnel are difficult to move, scaffolds and platforms are difficult to set up, and the safety coefficient during construction is low. The difficulty lies in that the center elevation of the lower chord ball of the net rack is 9.2 meters, the building area is large, if a full hall type scaffold is adopted, the cost is high, and a platform needs to be erected between the upper chord and the lower chord, so the cost is overhigh.

Disclosure of Invention

The invention solves the technical problem of providing the use method of the crawler-type operating platform for the net rack construction, which is convenient to move and efficient in construction.

The invention adopts the technical scheme that the using method of the crawler-type operating platform for the net rack construction comprises the following tools: the system comprises a primary platform and a secondary platform on a net rack, wherein the primary platform comprises at least one movable support plate, the movable support plate comprises a framework and a support plate on the framework, the framework is laid on lower chord members, the length of the framework is greater than that of two lower chord grids, one end of the framework is provided with a rope connecting device, the secondary platform comprises at least two support rods, the support rods are provided with two hooks with opposite or back-to-back openings, the two web members are hooked to enable the support rods to be hooked on the web members, and an operation table is arranged on the support rods; the sling passes through the lower chord, one end of the sling is connected with the rope connecting device on the framework, and the other end of the sling falls to the ground and is dragged by an operator;

the operation panel comprises scaffold pole and springboard, and on the bracing piece was installed side by side to three at least scaffold poles, every scaffold pole was supported by two at least bracing pieces, and scaffold pole upper berth was equipped with the springboard.

The method comprises the following steps that firstly, a framework is connected to a rope, the rope penetrates through the upper portion of a lower chord, the framework is dragged to the lower chord through dragging the rope, the framework stops when falling on at least three lower chords, and the framework supported by the lower chord and a supporting plate on the framework form a primary platform;

secondly, an operator stands on the primary platform, hooks at two ends of the supporting rod are hung on the web member, and the supporting rod is adjusted to be kept horizontal;

thirdly, after at least two support rods are installed, a scaffold rod is installed on the support rods, and a springboard is bound on the scaffold rod;

fourthly, mounting a roof inner plate on the springboard by an operator; along with the construction speed of the inner plate, an operator removes the rear springboard and moves the rear springboard to the advancing direction;

and fifthly, dragging the framework to the next station by an operator, repeating the third step of operation, and pushing the construction position forward.

Operating personnel divide into three groups, and the first group is ground constructor, and ground constructor drags the rope subaerial, pulling skeleton, and the second group is ligature personnel, and the ligature personnel give the scaffold pole ligature of secondary platform and dismantle the springboard, and the third group is inner panel installer, and inner panel installer installs the roofing inner panel on the secondary platform.

The lashing personnel can lash the gangboard on the primary platform.

And after the inner plate is installed, the springboard below the corresponding inner plate is removed by binding personnel, and the binding personnel stand on the secondary platform to remove the springboard.

The number of the movable carrier plates is at least two.

The operator hooks the safety belt on the net rack web members.

One end of the framework tilts upwards to form a warping head, and the rope connecting device is arranged on the warping head.

The method has the advantages that by applying the method, personnel can smoothly operate on the plane of the lower chord of the net rack, and the method is characterized by less matched personnel, less input materials, high repeated utilization rate and high safety factor.

All the connection points are firmly bound in the process of erection and use, and the safety belt is hung at hundreds of positions, so that the safety belt has higher safety and reliability; because the components are simple and light, the moving is convenient, the turnover is fast, and the use is flexible.

Drawings

FIG. 1 is a schematic view of the structure of the present invention.

Fig. 2 is a schematic diagram illustrating the mobile carrier plate in use.

Fig. 3 is a schematic view showing the installation state of the support rod.

FIG. 4 is a schematic view of a track-type installation mode of operation.

Labeled as: 1-purlin, 2-inner plate, 3-secondary platform, 4-net rack, 41-web member, 42-lower chord member, 5-movable carrier plate, 6-support rod, 61-scaffold rod and 62-springboard.

Detailed Description

The invention will be further explained with reference to the drawings.

As shown in fig. 1, in the crawler-type operating platform for grid construction of the present invention, a platform capable of revolving and moving is firstly erected at the lower chord of the grid as a primary platform, so as to provide a construction working surface for the construction of a secondary platform 3; a secondary operation platform is erected by taking the web members 41 of the truss as supports, the inner plate 2 is installed and constructed on the secondary platform 3, and the primary platform and the secondary platform 3 are gradually pushed forward along with the construction progress. Wherein, the front refers to the direction before construction.

Taking the following structure as an example, the grid structure is an oblique quadrangular pyramid, the center elevation of a single grid is 4 m x 4 m, the center elevation of a lower chord sphere of the grid is 9.2m, an upper chord of the grid is from a sloping water surface, the net height of the lowest point at two sides is 2.4 m, and the maximum net height at a ridge is 4.2 m.

The movable carrier plate 5 adopts L50 x 5 angle steel as a framework, one angle steel is transversely pulled every 0.8 m, clear water template strips, namely supporting plates, are paved on the framework and are fixed on the framework to form a whole, the front part of the framework is made into an upwarping shape by the angle steel to form a warping head, and the warping head plays a certain role in guiding, so that the framework can slide onto the lower chord 42 more easily. And a rope connecting device is arranged on the warping head, such as a welding lifting lug or a perforation on the angle steel, so that the rope can be conveniently fixed for dragging the framework. The length of the framework is selected according to the fact that the framework spans 2 lower chord grids when the platform is used once, namely, the framework is supported by three rod pieces simultaneously, 10cm allowance is reserved on the outer side of each rod piece, and safety and reliability are achieved.

Constructor stands and builds secondary platform 3 on a platform, the secondary platform adopts the phi 20 above reinforcing bar of both sides area hook to set up on rack web member 41 as bracing piece 6, two hook openings are relative or back of the body mutually, two web members of the style of calligraphy of falling V adopt the couple opening to right bracing piece 6, run into two web members 41 of the style of calligraphy, adopt the bracing piece 6 that the couple opening carried on the back mutually, then interval 1 meter ligature scaffold pipe on two adjacent reinforcing bars, full deck steel springboard 62 and use the steel wire ligature on scaffold pipe, form secondary platform 3. And constructors carry out interior plate construction on the secondary platform.

The construction method comprises the following steps:

firstly, a primary platform is constructed, a framework is dragged through a rope, the rope penetrates through the lower chord 42 from the upper part, the weight of a single movable carrier plate 5 is about 100kg, the single movable carrier plate is dragged to the lower chord 42 of the net rack by 4 persons in a combined force mode, because the front end of the framework is tilted, one end of the framework can easily slide to the lower chord 42 under the action of a pulling force, the movable carrier plate 5 is continuously dragged to continue to move forwards until the movable carrier plate completely slides to the lower chord 42. The framework stops when falling on at least three lower chords 42, the movable carrier plates 5 supported by the lower chords 42 form a primary platform, and one, two or more movable carrier plates 5 can be used according to the working requirement.

During construction, an operator can directly walk on the primary platform, and the safety belt hook can be hung on the net rack web member 41 along with the walking, so that the safety of the operator is ensured. When the construction process moves forwards, two movable support plates 5 can be used for cooperating to ensure safety, personnel on the movable support plates 5 retract the rope and then place the rope on the lower chord 42 of the next lattice again, the rope naturally slides to the personnel on the ground, the personnel on the movable support plates 5 are transferred to the static movable support plates 5, and the personnel on the ground pull the movable support plates 5 to move forwards through the rope. The number of the personnel can be reduced to 2 when the carrier plate is dragged, a plurality of groups of mobile carrier plates 5 can be dragged in a cross mode according to construction requirements, the more the number of the mobile carrier plates 5 is, more high-altitude construction personnel can be accommodated, and the forward pushing distance is longer.

Secondly, building a secondary platform 3, hanging hooks at two ends of a support rod 6 on a web member 41, and adjusting the support rod 6 to keep the support rod horizontal;

compared with a primary platform, the secondary platform is complex, needs to invest more manpower and material resources, and has the characteristics of simplicity, feasibility, safety and reliability compared with other operation platforms. On the oblique quadrangular pyramid net rack 4, the web member 41 and the lower chord member 42 are on the same plane, and the upper chord sphere, the web member 41 and the lower chord member 42 form a triangle. The hooks are roasted on two sides of the reinforcing steel bar with the diameter of more than 20, then the hooks are directly hung on two adjacent web members 41 of the net rack 4, and the reinforcing steel bar hooks are firmly hung on the web members 41 under the action of gravity.

Thirdly, after at least two support rods 6 are installed, a scaffold rod 61 is installed on the support rods 6, and a springboard 62 is bound on the scaffold rod 61;

the interval between the steel bar hooks and the interval between the lower chords 42 are the same and are 4 meters, the scaffold rods 61 with the length of 9 meters are bound by steel wires at the upper part, at least two scaffold rods are used as shown in the figure, three scaffold rods are used, the interval between the scaffold rods is 1 meter, the steel springboard 62 is fully paved on the scaffold rods 61, and the scaffold rods are bound by the steel wires. The three lower chord grids are constructed simultaneously, so that the total width of the springboard can reach 12 meters.

Fourthly, the operator installs the roof inner panel 2 on the springboard 62;

as shown in fig. 4, the springboard binding personnel advance with the fixed springboard 62 and hang the safety belt hook on the net rack web 41 during construction. And after binding for about 30 meters, the inner plate construction can be carried out. After the inner plate 2 is installed, the springboard 62 below the corresponding inner plate 2 is removed by binding personnel, the personnel for binding the springboard remove the rear springboard 62 along with the construction speed of the inner plate 2, and the springboard 62 is bound to the front, and the binding personnel can remove the springboard on the secondary platform 3 and can also operate on the primary platform.

And when the construction progress exceeds the position covered by the platform for one time, carrying out the next step.

And fifthly, dragging the carrier plate 5 to the next station by an operator, namely, pushing the primary platform forward, repeating the operation of the third step after the primary platform is stabilized, continuously pushing the secondary platform 3 forward, and continuously installing the inner plate. That is, the personnel who need to drag and move the carrier plate 5 cooperate with the personnel construction of ligature springboard to carry out crawler-type line production. Meanwhile, the personnel for binding the springboard removes the rear springboard and moves the rear springboard to the front along with the construction speed of the inner board, the actions are not delayed and are matched with each other, and the integral moving speed is high until the construction of the inner board is finished.

For high construction efficiency and clear division of labor, the operators are divided into three groups, the first group is ground constructors, and the ground constructors pull the ropes on the ground to pull the movable carrier plates 5. The second group is the binding personnel, and the binding personnel bind and dismantle the springboard for the scaffold pole 61 of the secondary platform. The third group is inner plate installation personnel, and the inner plate installation personnel install the roof inner plate 2 on the secondary platform 3.

The secondary platform has the advantages that the secondary platform is reusable, materials can be moved forwards from back along with the construction progress of the roof inner plate, and the rapid movement characteristic of the primary platform is matched, so that the secondary platform can better adapt to the requirement of rapid construction. During construction, an operator can hang the safety belt hook on the upper chord at any time, and personal safety is guaranteed.

The key of the platform erection is that a simple machine tool is applied to a primary platform, so that the problem that no working surface exists at the lower chord of the net rack is solved, and the machine tool is simple to manufacture and operate. But the length of the supporting plate is larger than the length of the two grids when the supporting plate is erected, so that the supporting plate is stressed by the three rod pieces together when in work, and the sliding-off accident of the supporting plate can be prevented. The fixed point of the secondary platform 3 adopts a method of reinforcing steel bars with hooks on two sides, the platform without rooting has a foot-drop point by applying a simple principle, and the foot-drop point is low in manufacturing cost and concise in installation and movement. The stress points on the two sides of the steel bar are uniformly stressed, and the tilting accident can not happen.

Claims

1. The use method of the crawler-type operating platform for the net rack construction comprises the following tools: the system comprises a primary platform and a secondary platform on a net rack, wherein the primary platform comprises at least one movable support plate, the movable support plate comprises a framework and a support plate on the framework, the framework is laid on lower chord members, the length of the framework is greater than that of two lower chord grids, one end of the framework is provided with a rope connecting device, the secondary platform comprises at least two support rods, the support rods are provided with two hooks with opposite or back-to-back openings, the two web members are hooked to enable the support rods to be hooked on the web members, and an operation table is arranged on the support rods; the sling passes through the lower chord, one end of the sling is connected with the rope connecting device on the framework, and the other end of the sling falls to the ground and is dragged by an operator;

2. The use method of the crawler-type operation platform for grid construction, which is disclosed by claim 5, comprises the following steps of: the operating personnel divide into three groups, and the first group is ground constructor, and ground constructor drags the rope subaerial, pulling skeleton, and the second group is ligature personnel, and the ligature personnel give the scaffold pole ligature of secondary platform and dismantle the springboard, and the third group is inner panel installer, and inner panel installer installs the roofing inner panel on the secondary platform.

3. The use method of the crawler-type operation platform for grid construction, which is disclosed by claim 6, comprises the following steps of: the lashing personnel can lash the gangboard on the primary platform.

4. The use method of the crawler-type operation platform for grid construction, which is disclosed by claim 7, comprises the following steps of: and after the inner plate is installed, the springboard below the corresponding inner plate is removed by binding personnel, and the binding personnel stand on the secondary platform to remove the springboard.

5. The use method of the crawler-type operation platform for grid construction, which is disclosed by claim 8, comprises the following steps of: the number of the movable carrier plates is at least two.

6. The use method of the crawler-type operation platform for grid construction, which is disclosed by claim 9, comprises the following steps of: the operator hooks the safety belt on the net rack web members.

7. The use method of the crawler-type operation platform for grid construction according to claim 1, characterized in that: one end of the framework tilts upwards to form a warping head, and the rope connecting device is arranged on the warping head.