A net rack steel platform jacking device and a construction method thereof

Abstract

The application provides a net rack steel platform jacking device and a construction method thereof. The net rack steel platform jacking device comprises a jack, a jacking support, a standard section support and a supporting support. The jack is placed in the jacking support. The standard section support is arranged on the jacking support and connected by flange bolts. The supporting support is arranged on the standard section support and connected by flange bolts. The standard section support is provided with a plurality of standard section supports, and the standard section supports are connected by flange bolts. The device has simple structure, flexible and convenient transportation, simple and fast installation mode and fast construction speed, so that the labor input and cost input can be effectively reduced. Meanwhile, the number and installation position of the jacking device can be flexibly selected according to the size of the net rack steel platform, and the whole large-area net rack steel platform which is assembled in advance can be lifted by synchronous jacking of multiple groups of jacking devices.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of net rack installation, and particularly relates to a net rack steel platform jacking device and a construction method thereof. BACKGROUND

[0002] With the construction of large-scale sports venues, theaters and cultural and sports centers in various places, various large-span steel structure net racks are increasingly applied to building roof covers. The steel structure net rack of such projects is usually large in span, large in volume and high in height.

[0003] At present, the traditional net rack installation construction method includes high-altitude assembly method and overall lifting method. The high-altitude assembly method needs to consume a large amount of frame material to set up an operation platform, and the material rental and labor cost are high. The overall lifting method needs to ensure reliable connection between the lifting frame and the structure, and is not easy to construct due to the constraints of the site environment. Patent CN112412036A discloses a net rack installation construction method and a net rack lifting device. The construction method includes the following steps: step one: assembling a steel net rack on the ground directly below the projection position of the speed skating venue steel net rack; step two: selecting a lifting point on the assembled steel net rack of step one; step three: installing a lifting unit for the steel net rack; step four: loading the steel net rack through the lifting unit in stages to lift the steel net rack as a whole to the design elevation after it is separated from the assembly platform; step five: installing a rod member at the position of the support without a lifting point and a part of the support rod member at the lifting point of the net rack installed in step three and lifted to the design elevation; step six: performing staged unloading, supplementing the steel net rack, and completing the installation of the steel net rack. Although the patent can meet the precision and safety requirements of structure installation, it cannot realize the overall and stable lifting of the installed large steel net rack, and still needs to supplement the steel net rack in the later period. Moreover, the patent uses a large number of instruments and equipment to lift the steel net rack, and the lifting method is complicated and requires many construction requirements, greatly increasing the construction difficulty.

[0004] Therefore, how to design a device with simple structure, convenient and fast construction method and small difficulty, which can realize the overall, safe and stable jacking of the large steel structure net rack, has become a technical problem to be solved by the technical personnel in the field. SUMMARY

[0005] In order to solve the above problems, the present application provides the following technical solutions:

[0006] A net rack steel platform jacking device, comprising a jack, a jacking support, a standard section support and a supporting support; the jack is placed in the jacking support; the standard section support is arranged on the jacking support and connected by flange bolts; and the supporting support is arranged on the standard section support and connected by flange bolts.

[0007] Preferably, the standard node support is provided with a plurality of flange bolts for connecting two standard node supports.

[0008] Preferably, the jacking support comprises a jacking side plate, a first angle steel, a bottom plate and an L-shaped stopper; the jacking side plate is symmetrically arranged on both sides of the bottom plate and is fixedly connected by a screw rod and a screw nut; the jack is placed on the bottom plate, the L-shaped stopper is arranged around the jack and is fixedly connected with the bottom plate by a screw rod and a screw nut; the first angle steel is provided with a plurality of first angle steels, and the first angle steels are fixedly connected with the jacking side plate by screw rods and screw nuts at both ends.

[0009] Preferably, the jacking side plate comprises a first steel pipe, a first flange plate, a rectangular pipe group and a first connecting plate; the first steel pipe is symmetrically arranged at both ends of the rectangular pipe group and is fixedly connected by welding; the first flange plate is arranged at the upper and lower ends of the first steel pipe and is fixedly connected by welding; the first connecting plate is arranged on the first steel pipe and is fixedly connected by welding, and two first connecting plates are arranged on each first steel pipe.

[0010] Preferably, the standard node support comprises a standard side plate, a second angle steel and a top plate; the standard side plate is symmetrically arranged on both sides of the top plate and is fixedly connected by a screw rod and a screw nut; the second angle steel is provided with a plurality of second angle steels, and the second angle steels are fixedly connected with the standard side plate by screw rods and screw nuts at both ends.

[0011] Preferably, the standard side plate comprises a second steel pipe, a second flange plate, a rectangular pipe group and a second connecting plate; the second steel pipe is symmetrically arranged at both ends of the rectangular pipe group and is fixedly connected by welding; the second flange plate is arranged at the upper and lower ends of the second steel pipe and is fixedly connected by welding; the second connecting plate is arranged on the second steel pipe and is fixedly connected by welding, and two second connecting plates are arranged on each second steel pipe.

[0012] Preferably, the supporting support comprises four columns and four steel plates; two columns are connected by a steel plate, and the steel plate and the column are fixedly connected by a screw rod and a screw nut.

[0013] Preferably, the column comprises a third steel pipe, a third flange plate and a third connecting plate; the third flange plate is symmetrically arranged at both ends of the third steel pipe and is fixedly connected by welding; the third connecting plate is arranged on the third steel pipe and is fixedly connected by welding, and four third connecting plates are arranged on each third steel pipe.

[0014] Preferably, the steel plate is further provided with a semicircular groove.

[0015] A construction method of a net rack steel platform jacking device, comprising the following steps:

[0016] S1: After the net rack steel platform is assembled on the ground, a plurality of hydraulic jacks are arranged uniformly in the net rack steel platform;

[0017] S2: Start the hydraulic jacks to make them jacked up to a height greater than that of the net rack steel platform, at this time, the jacking support is assembled on the ground, then the jacks are placed on the jacking support and the L-shaped stopper is installed to position it, then a standard section support assembled is installed on the jacking support, and a supporting support is installed on the standard section support;

[0018] S3: Make the hydraulic jacks fall back to make the net rack steel platform fall stably on the supporting support, and remove the hydraulic jacks;

[0019] S4: Start the jacks to make them jacked up to a height greater than that of the standard section support assembled, at this time, two standard section side plates and two transverse second angle steels are installed under the standard section support;

[0020] S5: Make the jacks fall back to make the standard section side plates fall on the jacking support, and then install the roof and two oblique second angle steels;

[0021] S6: Repeat S4 and S5 until the net rack steel platform is jacked up to the planned height.

[0022] Compared with the prior art, the present application has the following beneficial effects:

[0023] 1. The net rack steel platform jacking device provided by the present application can flexibly select the number and installation position of the jacking device according to the size of the net rack steel platform, and through the synchronous jacking of multiple groups of jacking devices, the overall lifting of the large-area net rack steel platform assembled in advance can be realized.

[0024] 2. The structure of the supporting support and the standard section support in the net rack steel platform jacking device provided by the present application is stable, which can not only well support the net rack steel platform, but also uniformly distribute the pushing force of the jacks to the standard section support and the supporting support, so that the net rack steel platform is uniformly stressed.

[0025] 3. The net rack steel platform jacking device provided by the present application not only has a simple structure, flexible transportation and convenient installation, but also adopts flange bolt connection between the supports and screw cap connection between the components, so that the installation method is simple and fast, the construction speed is fast, and the labor and cost inputs can be effectively reduced.

[0026] The above description is only a summary of the technical solutions of the present application. In order to make the technical means of the present application more clearly understood, and thus can be implemented according to the content of the description, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the following will be described in detail with the preferred embodiments of the present application and with the help of the accompanying drawings as follows.

[0027] The above and other purposes, advantages and characteristics of the present application will be more apparent to those skilled in the art from the following detailed description of specific embodiments of the present application in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without any creative effort. In all the drawings, similar elements or parts are generally identified by similar reference signs. In the drawings, each element or part is not necessarily drawn according to the actual proportion.

[0029] Figure 1 Structure composition schematic diagram of a net rack steel platform jacking device provided by the present application;

[0030] Figure 2 Structure composition schematic diagram of a jacking support in a net rack steel platform jacking device provided by the present application;

[0031] Figure 3 Structure composition schematic diagram of a standard section support in a net rack steel platform jacking device provided by the present application;

[0032] Figure 4 Structure composition schematic diagram of a bearing support in a net rack steel platform jacking device provided by the present application;

[0033] Figure 5 First working state schematic diagram of a net rack steel platform jacking device provided by the present application;

[0034] Figure 6 Second working state schematic diagram of a net rack steel platform jacking device provided by the present application;

[0035] Figure 7 Third working state schematic diagram of a net rack steel platform jacking device provided by the present application;

[0036] In the figure: 1, jack; 2, jacking support; 21, first angle steel; 22, bottom plate; 23, L-shaped stopper; 201, first steel pipe; 202, first flange plate; 203, first rectangular steel pipe group; 204, first connecting plate; 3, standard section support; 31, second angle steel; 32, top plate; 301, second steel pipe; 302, second flange plate; 303, second rectangular steel pipe group; 304, second connecting plate; 4, supporting support; 41, steel plate; 401, third steel pipe; 402, third flange plate; 403, third connecting plate. DETAILED DESCRIPTION

[0037] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. In the following description, specific details such as specific configurations and components are provided only to help a comprehensive understanding of the embodiments of the present application. Therefore, those skilled in the art should understand that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, in order to be clear and concise, the description of known functions and structures is omitted in the embodiments.

[0038] It should be understood that the "one embodiment" or "the embodiment" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, "one embodiment" or "the embodiment" appearing throughout the specification does not necessarily mean the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner.

[0039] In addition, reference numerals and / or letters can be repeated in different examples in the present application. Such repetition is for the purpose of simplification and clarity, and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0040] The term "and / or" herein is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can mean that there are three cases of A alone, B alone and A and B together. The term "and" herein is a description of another association relationship of the associated objects, which means that there can be two relationships, for example, A and B can mean that there are two cases of A alone and A and B together. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after it.

[0041] The term "at least one" is merely used to describe a corresponding relationship of the associated objects, and indicates that three relationships can exist, for example, at least one of A and B can represent three cases of A existing alone, A and B existing together, and B existing alone.

[0042] It should also be noted that, in this document, relationship terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion.

[0043] Embodiment 1

[0044] This embodiment introduces a structure of a net rack steel platform jacking device.

[0045] Please refer to the accompanying Figure 1 , Figure 1 The structure of the jacking support of the net rack steel platform jacking device provided by the application is shown in the accompanying

[0046] A net rack steel platform jacking device, comprising a jack 1, a jacking support 2, a standard section support 3 and a supporting support 4; the jack 1 is placed in the jacking support 2; the standard section support 3 is arranged on the jacking support 2 and connected by flange bolts; the supporting support 4 is arranged on the standard section support 3 and connected by flange bolts; the standard section support 3 is provided in plurality, and two standard section supports 3 are connected by flange bolts.

[0047] Please refer to the accompanying Figure 2 , Figure 2 The structure of the jacking support of the net rack steel platform jacking device provided by the application is shown in the accompanying

[0048] The jacking support 2 comprises a jacking side plate, a first angle steel 21, a bottom plate 22 and an L-shaped blocking piece 23; the jacking side plate is provided in two and symmetrically arranged on both sides of the bottom plate 22 and fixedly connected by a screw rod and a screw cap; the jack 1 is placed on the bottom plate 22, the L-shaped blocking piece 23 is tightly and symmetrically arranged around the jack 1 and fixedly connected with the bottom plate 22 by a screw rod and a screw cap, so as to fix the position of the jack 1 and prevent it from being displaced; the first angle steel 21 is provided in plurality, and the two ends of the first angle steel 21 are fixedly connected with the jacking side plate by a screw rod and a screw cap.

[0049] The jacking side plate comprises a first steel pipe 201, a first flange plate 202, a first rectangular steel pipe group 203 and a first connecting plate 204; the first steel pipe 201 is provided with two, and is symmetrically arranged at two ends of the first rectangular steel pipe group 203 and fixedly connected in a welding mode; the first flange plate 202 is arranged at upper and lower ends of the first steel pipe 201 and fixedly connected in a welding mode, and the first flange plate 202 is provided with four in total; the first connecting plate 204 is arranged on the first steel pipe 201 and fixedly connected in a welding mode, and each first steel pipe 201 is provided with two first connecting plates 204;

[0050] Further, the first rectangular steel pipe group 203 is composed of two parallel transverse rectangular steel pipes and four vertical rectangular steel pipes, and the vertical rectangular steel pipes are welded in an "M" shape after welding.

[0051] Further, the bottom plate 22, the first angle steel 21, the first flange plate 202 and the first connecting plate 204 are all preformed with holes of corresponding number and size; the bottom plate 22 and the first connecting plate 204 in the jacking side plate, and the first angle steel 21 and the first connecting plate 204 in the jacking side plate are all fixedly connected through a screw rod and a nut.

[0052] Further, the screw rod is provided with threads at two ends, and is sleeved into the hole and screwed with nuts at two ends to realize fixed connection.

[0053] Further, the first connecting plate 204 is arranged perpendicularly to the first rectangular steel pipe group 203.

[0054] Please refer to the accompanying drawings Figure 3 , Figure 3 The structure of the standard node support of the net rack steel platform jacking device provided by the application is shown in the accompanying drawings.

[0055] The standard node support 3 comprises a standard side plate, a second angle steel 31 and a top plate 32; the standard side plate is provided with two, and is symmetrically arranged at two sides of the top plate 32 and fixedly connected through a screw rod and a nut; the second angle steel 31 is provided with multiple, and two ends of the second angle steel 31 are fixedly connected with the standard side plate through a screw rod and a nut.

[0056] Further, the standard side plate comprises a second steel pipe 301, a second flange plate 302, a second rectangular steel pipe group 303 and a second connecting plate 304; the second steel pipe 301 is provided with two, and is symmetrically arranged at two ends of the second rectangular steel pipe group 303 and is fixedly connected in a welding mode; the second flange plate 302 is arranged at upper and lower ends of the second steel pipe 301 and is fixedly connected in a welding mode, and the second flange plate 302 is provided with four; the second connecting plate 304 is arranged on the second steel pipe 301 and is fixedly connected in a welding mode, and each second steel pipe 301 is provided with two second connecting plates 304;

[0057] Further, the second rectangular steel pipe group 303 is also composed of two parallel transverse rectangular steel pipes and four vertical rectangular steel pipes, and the vertical rectangular steel pipes are welded in an "M" shape.

[0058] Further, the steel plate 41, the third flange plate 402 and the third connecting plate 403 are all reserved with corresponding numbers and sizes of holes; the steel plate 41 and the third connecting plate 403 on the third steel pipe 401 are fixedly connected through a screw rod and a nut.

[0059] Further, the second connecting plate 304 is arranged perpendicularly to the second rectangular steel pipe group 303.

[0060] Further, the length of the second steel pipe 301 is greater than that of the first steel pipe 201.

[0061] Please refer to the accompanying drawings Figure 4 , Figure 4 It is a structural composition schematic view of a supporting bracket in a net rack steel platform jacking device provided by the application.

[0062] The supporting bracket 4 comprises four columns and four steel plates 41; two columns are connected through a steel plate 41, and the steel plate 41 and the column are fixedly connected through a screw rod and a nut.

[0063] Further, the column comprises a third steel pipe 401, a third flange plate 402 and a third connecting plate 403; the third flange plate 402 is symmetrically arranged at two ends of the third steel pipe 401 and is fixedly connected in a welding mode; the third connecting plate 403 is arranged on the third steel pipe 401 and is fixedly connected in a welding mode, and each third steel pipe 401 is provided with four third connecting plates 403;

[0064] Further, the steel plate 41, the third flange plate 402 and the third connecting plate 403 are all reserved with corresponding numbers and sizes of holes; the steel plate 41 and the third connecting plate 403 on the third steel pipe 401 are fixedly connected through a screw rod and a nut.

[0065] Further, a semicircular groove is arranged on the steel plate 41, and the diameter of the semicircular groove is slightly larger than the diameter of the rod in the net rack steel platform, so that the steel plate 41 can better support the net rack steel platform.

[0066] Further, the jack 1 is a hydraulic jacking jack.

[0067] The net rack steel platform jacking device provided in the embodiment not only has a simple structure, flexible and convenient transportation, but also is connected by flange bolts between the supports and connected by screws and nuts between the components, so that the installation method is simple and fast, and the construction speed is fast, thereby effectively reducing the labor input and cost input. In addition, the structure stability of the supporting bracket and the standard section support is good, which can not only be used to well support the net rack steel platform, but also can uniformly distribute the pushing force of the jack to the standard section support and the supporting bracket, so that the net rack steel platform is uniformly stressed.

[0068] Embodiment 2

[0069] Based on embodiment 1, the embodiment introduces a construction method of a net rack steel platform jacking device, which specifically includes the following steps:

[0070] S1: After the net rack steel platform is assembled on the ground, a plurality of hydraulic jacks are arranged uniformly in the net rack steel platform;

[0071] S2: Start the hydraulic jack to make it jacked up to a height greater than that of the net rack steel platform, at this time, the jacking bracket 2 is assembled on the ground, then the jack 1 is placed on the jacking bracket 2 and the L-shaped stop piece 23 is installed to position it, then a standard section support 3 is installed on the jacking bracket 2, and a supporting bracket 4 is installed on the standard section support 3; for details, please refer to the accompanying drawings. Figure 5 , Figure 5 The first working state diagram of the net rack steel platform jacking device provided by the application.

[0072] S3: Make the hydraulic jack fall back to make the net rack steel platform fall stably on the supporting bracket 4, and remove the hydraulic jack;

[0073] S4: Start the jack 1 to make it jacked up to a height greater than that of a standard section support 3, at this time, two standard section side plates and two transverse second angle steels 31 are installed under the standard section support 3; for details, please refer to the accompanying drawings. Figure 6 , Figure 6 The second working state diagram of the net rack steel platform jacking device provided by the application.

[0074] S5: make the jack 1 back down, so that the standard section side plate falls on the jacking support 2, and then install the top plate 32 and 2 oblique second angle steels 31; for details, please refer to the attached Figure 7 , Figure 7 Figure 3 is a third working state schematic diagram of the net rack steel platform jacking device provided by the present application.

[0075] S6: repeat S4 and S5 until the net rack steel platform is jacked to the planned height.

[0076] Further, a net rack steel platform jacking device can be disassembled by reversing the above steps.

[0077] The construction method of the net rack steel platform jacking device provided by the present application is simple, and the number and installation positions of the jacking devices can be flexibly selected according to the size of the net rack steel platform, and through the synchronous jacking of multiple groups of jacking devices, the overall lifting of the large-area net rack steel platform that has been assembled in advance can be realized.

[0078] The above only describes the preferred embodiments of the present application, and does not limit the protection scope of the present application. For those skilled in the art, the present application can have various changes and variations. Any changes, modifications, replacements, integrations and parameter changes of these embodiments within the spirit and principles of the present application, which can realize the same functions without departing from the principles and spirit of the present application, fall within the protection scope of the present application.

Claims

1. A construction method of a net rack steel platform jacking device, characterized in that, The method comprises the following steps: S1: After the steel platform of the net rack is assembled on the ground, a plurality of hydraulic jacks are arranged in the steel platform of the net rack; S2: The hydraulic jacks are started to lift the steel platform of the net rack to a height greater than that of the steel platform of the net rack, at this time, the lifting support (2) is assembled on the ground, then the jack (1) is placed on the lifting support (2) and the L-shaped stopper (23) is installed to position the jack (1), then a standard section support (3) is installed on the lifting support (2), and a supporting support (4) is installed on the standard section support (3); S3: The hydraulic jacks are lowered to make the steel platform of the net rack fall on the supporting support (4) stably, and the hydraulic jacks are removed; S4: The jack (1) is started to lift the standard section support (3) to a height greater than that of the standard section support (3), at this time, two standard side plates and two second angle steels (31) are installed under the standard section support (3); S5: The jack (1) is lowered to make the standard side plates fall on the lifting support (2), and then the top plate (32) and the two second angle steels (31) are installed; S6: Steps S4 and S5 are repeated until the steel platform of the net rack is lifted to the planned height; The lifting device for the steel platform of the net rack comprises a jack (1), a lifting support (2), a standard section support (3) and a supporting support (4); the jack (1) is placed in the lifting support (2); the standard section support (3) is arranged on the lifting support (2) and connected by flange bolts; and the supporting support (4) is arranged on the standard section support (3) and connected by flange bolts; The lifting support (2) comprises lifting side plates, first angle steels (21), a bottom plate (22) and an L-shaped stopper (23); the lifting side plates are symmetrically arranged on both sides of the bottom plate (22) and fixedly connected by screws and nuts; the jack (1) is placed on the bottom plate (22), the L-shaped stopper is arranged around the jack (1) and fixedly connected with the bottom plate (22) by screws and nuts; and the first angle steels (21) are arranged in plurality and fixedly connected with the lifting side plates by screws and nuts at both ends of the first angle steels (21); The standard section support (3) comprises standard side plates, second angle steels (31) and a top plate (32); the standard side plates are symmetrically arranged on both sides of the top plate (32) and fixedly connected by screws and nuts; and the second angle steels (31) are arranged in plurality and fixedly connected with the standard side plates by screws and nuts at both ends of the second angle steels (31); The supporting support (4) comprises four columns and four steel plates (41); two columns are connected by a steel plate (41), the steel plate (41) and the column are fixedly connected by screws and nuts; and a semicircular groove is further arranged on the steel plate (41).

2. The construction method of a net rack steel platform jacking device according to claim 1, characterized in that, The standard section supports (3) in the lifting device for the steel platform of the net rack are arranged in plurality, and two standard section supports (3) are connected by flange bolts. The jacking side plate comprises a first steel pipe (201), a first flange plate (202), a first rectangular steel pipe group (203) and a first connecting plate (204); the first steel pipe (201) is symmetrically arranged at both ends of the first rectangular steel pipe group (203) and is fixedly connected in a welding mode; the first flange plate (202) is arranged at both ends of the first steel pipe (201) and is fixedly connected in a welding mode; the first connecting plate (204) is arranged on the first steel pipe (201) and is fixedly connected in a welding mode, and two first connecting plates (204) are arranged on each first steel pipe (201); The standard side plate comprises a second steel pipe (301), a second flange plate (302), a second rectangular steel pipe group (303) and a second connecting plate (304); the second steel pipe (301) is symmetrically arranged at both ends of the second rectangular steel pipe group (303) and is fixedly connected in a welding mode; the second flange plate (302) is arranged at both ends of the second steel pipe (301) and is fixedly connected in a welding mode; the second connecting plate (304) is arranged on the second steel pipe (301) and is fixedly connected in a welding mode, and two second connecting plates (304) are arranged on each second steel pipe (301); The column comprises a third steel pipe (401), a third flange plate (402) and a third connecting plate (403); the third flange plate (402) is symmetrically arranged at both ends of the third steel pipe (401) and is fixedly connected in a welding mode; the third connecting plate (403) is arranged on the third steel pipe (401) and is fixedly connected in a welding mode, and four third connecting plates (403) are arranged on each third steel pipe (401).

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