High-altitude large-span steel truss sliding installation system device

Abstract

The utility model provides a high-altitude large-span steel truss sliding installation system device. The high-altitude large-span steel truss sliding installation system device comprises a sliding rail subsystem and a traction subsystem. The sliding rail subsystem comprises a main frame, rails, braking car stops, a steel truss and roller sets, the rails are laid at the top ends of frame beams on the two sides of the main frame, the braking car stops are arranged at the ends of the rails, and the roller sets are installed at supporting points at the two ends of the steel truss; the traction subsystem comprises traction equipment and steel wire ropes which are installed at the starting point end and the terminal point end of the rail, the traction equipment is connected with the corresponding ends of the steel truss through the steel wire ropes, the traction equipment at one end is used for providing traction power, and the traction equipment at the other end provides opposite force for limiting the sliding speed. The device has the advantages of being small in site restriction, improving construction efficiency and reducing operation risks.

Description

TECHNICAL FIELD

[0001] The utility model relates to the steel truss construction technology field under the limited space, specifically speaking, relate to a kind of high-altitude large-span steel truss sliding installation system device. BACKGROUND

[0002] With the rapid development of modern industrial economy, more and more industrial plants, especially steel structure roof industrial plants, are constructed with lighter overall structure compared with concrete structure, shorter construction period, and can solve many problems of large-span industrial plants, and are more and more widely used.

[0003] However, the hoisting construction system of the existing large-span steel structure needs a large number of manual mechanical operations, and is independent of other auxiliary equipment of the steel structure, occupies a large space, and has more high-altitude operations, so the safety of personnel is difficult to guarantee.

[0004] In addition, for the plant surrounded by other buildings, the traditional large number of mechanical devices cannot enter the construction site, which greatly affects the efficiency of the plant construction.

[0005] In order to solve the above technical problems, a new large-span steel truss hoisting and sliding system is needed to meet the hoisting and construction requirements of steel frame plants. UTILITY MODEL CONTENTS

[0006] The utility model aims at the deficiencies of the prior art, and provides a high-altitude large-span steel truss sliding installation system device with small site constraints, improved construction efficiency and reduced operation risk.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme of a high-altitude large-span steel truss sliding installation system device, which comprises a sliding track subsystem and a traction subsystem.

[0008] The sliding track subsystem comprises a main frame, a track, a brake car stop, a steel truss and a roller set, the track is laid on the top of the frame beams on both sides of the main frame, the brake car stop is arranged at the end of the track, and the roller set is installed at the support points at both ends of the steel truss.

[0009] The traction subsystem comprises traction equipment and steel wire ropes installed at the starting point and the terminal point of the track, the traction equipment is connected to the corresponding end of the steel truss through the steel wire ropes, one end of the traction equipment is used to provide traction power, and the other end of the traction equipment is used to provide reverse force to limit the sliding speed.

[0010] Preferably, the width of the main frame and the span of the steel truss are both greater than or equal to 30m.

[0011] Preferably, the load bearing capacity of the roller set is greater than or equal to 20t.

[0012] Preferably, the track is a channel steel, and the channel steel model is 20# channel steel.

[0013] Preferably, the traction device is an electric hoist or a winch, and the power of the traction device is greater than or equal to 20t.

[0014] Preferably, the steel truss comprises two main trusses and a secondary truss for connecting the two main trusses.

[0015] Preferably, the jacking device is an independent component for jacking the steel truss.

[0016] Preferably, the top end of the steel truss is provided with four lifting points, and the lifting points are located at the top chord position of the main truss.

[0017] Preferably, the roller set and the steel truss are fixed by bolts.

[0018] Preferably, the length of the main frame is greater than or equal to 70m, and the height is greater than or equal to 40m.

[0019] Compared with the prior art, the utility model has substantial features and progress, specifically, the utility model sets up a track on the basis of the frame structure, sets up a roller set at the bottom end of the steel truss to be installed, installs two groups of traction devices at both ends of the track, and during the installation process of the steel truss, the hoisting device only needs to hoist the steel truss and place it at one end of the main frame, then moves the steel truss to the position to be seated through the traction subsystem, so that the interference of the installation environment to the installation work is reduced to the minimum, the construction efficiency is improved, and the safety is ensured.

[0020] Through the reverse control of the traction devices at both ends, the steel truss can slide uniformly on the track, and the consistency of the sliding at both ends is ensured, so that the risk of derailment of the steel truss is greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structure schematic view of a high-altitude large-span steel truss sliding installation system device in the utility model.

[0022] Figure 2 It is a partial structure principle view of a sliding track subsystem in the utility model.

[0023] Figure 3 It is a partial structure principle view of a traction subsystem in the utility model.

[0024] Figure 4 It is a layout view of a main frame in the utility model.

[0025] Figure 5 It is one of lifting point distribution views of a steel truss in the utility model.

[0026] Figure 6 This is the second distribution diagram of the lifting points of the steel truss in the utility model.

[0027] In the figure: 1. Sliding track subsystem; 2. Traction subsystem; 11. Main frame; 12. Track; 13. Steel truss; 14. Roller assembly; 21. Traction equipment; 22. Wire rope. DETAILED DESCRIPTION

[0028] The technical solution of the present utility model is further described in detail below through specific implementation methods.

[0029] like Figures 1-6 As shown, a high-altitude large-span steel truss sliding installation system device includes a sliding track subsystem 1 and a traction subsystem 2.

[0030] The sliding track subsystem includes a main frame 11, a track 12, a brake stop (not shown in the figure), a steel truss 13 and a roller group 14. The track 12 is paved on the top of the frame beams on both sides of the main frame 11. In this embodiment, the track 12 is made of 20# channel steel. The brake stop is set at the end of the track. The brake stop can be made of rubber, spring or other stop with shock-absorbing ability. This structure is a conventional structure. The roller group 14 is installed at the support points at both ends of the steel truss 13. The roller group is fixed to the steel truss by bolts. The roller group 14 is used to cooperate with the track 12 and move along the track 12.

[0031] The traction subsystem 2 includes a traction device 21 and a steel wire rope 22 installed at the starting end and the end end of the track. The traction device 21 is connected to the corresponding ends of the steel truss 13 through the steel wire rope 22. The traction device at one end is used to provide traction power, and the traction device at the other end provides a reverse force to limit the sliding speed.

[0032] It also includes a jack, which is an independent component and is used to lift the steel truss.

[0033] In this embodiment, the length of the main frame is ≥70m and the height is ≥40m, the width of the main frame and the span of the steel truss are both ≥30m, the load-bearing capacity of the roller group is ≥20t, the traction equipment is an electric hoist or winch, and the power of the traction equipment is ≥20t.

[0034] The steel truss includes two main trusses and a secondary truss for connecting the two main trusses. Four hanging points are set at the top of the steel truss, and the hanging points are located at the upper chord position of the main truss.

[0035] This scheme is verified in the waste incineration power generation project in Xingshan County. The waste storage pool of the waste incineration power generation project in Xingshan County has a length of 76.8 meters, a width of 39.7 meters, and a height of 47.5 meters. The roof is a steel truss structure. The steel truss of the waste storage pool has a total of 9 bays. The construction has the characteristics of large span, long distance, heavy components, etc.

[0036] Before construction, the technical personnel calculates the construction load of the frame beam according to the weight of the two steel trusses and the stress of each load-bearing steel wheel, checks the stress stability of the frame beam guide rail, and determines the lifting point position.

[0037] According to the construction scheme, the construction site operation team is given detailed technical and safety technical briefings to ensure that the site strictly follows the construction scheme.

[0038] The load-bearing steel wheel selects a 20t heavy-duty roller. The lifting rope uses a 56mm thick steel wire rope. The 20# channel steel is used as the roller gradual pushing guide rail. The traction equipment uses a 20t chain electric hoist. The 20t jack lifts the truss. The incoming materials and equipment must provide a qualified certificate, and can only be used after being accepted.

[0039] The two main trusses are welded on site, and the secondary truss between the two main trusses is welded with the main truss on the ground to form two truss structures. The assembly and welding sequence is as follows: first, lift the U-axis-S-axis two steel roof trusses and connect them with horizontal chord horizontal tie rods, horizontal supports, and secondary trusses; second, lift the Q-axis single truss; third, lift the N-axis-L-axis two trusses and connect them with horizontal chord horizontal tie rods, horizontal supports, and secondary trusses; fourth, lift the J-axis single truss; fifth, lift the G-axis single steel roof truss; sixth, lift the E-axis-C-axis two trusses and connect them with horizontal chord horizontal tie rods, horizontal supports, and secondary trusses; after the crawler crane fixes the steel roof truss in place, it is connected with the previous truss.

[0040] At the end of the two steel roof trusses, a 20mm steel plate is used to bolt connect the 20t load-bearing steel wheel with the two side columns φ377 steel pipes.

[0041] The lifting point is set at the second node position offset to both sides of the roof truss. The lifting force point is set at the upper and lower chord positions of the lifting point. Each truss is provided with two lifting points and four force points.

[0042] A 350-ton crawler crane is stationed at the east side of the waste pool. The steel truss lifting and storage point is in the south side area of the waste pool. After the truss is assembled, it is transported to the crawler crane coverage area using a 300T automobile crane. The crawler crane is vertically lifted to the upper space of the waste pool, rotated from south to north to the 41.7m channel steel rail positioning, and so on.

[0043] After the steel truss is stabilized, the connection is pulled by traction, at this time, the 20t electric hoist is in the position of X axis, using 4 times of steel wire rope ratio (the total weight of main truss and secondary truss is about 55 tons, taking the friction coefficient 0.2, that is, 55*0.2 / 2=5.5 tons), the electric hoist in the opposite direction of the truss advancement controls the inertia of the advancement speed to ensure the smoothness of the sliding speed, and the net frame is slowly slid to the specified position. After checking that the size, elevation and support position of each part meet the design requirements, it can be positioned according to the specified position.

[0044] After the truss is in place, the 20t jack is used to lift the truss support point, the roller group is removed, the corresponding track is cut off, the steel truss is smoothly transitioned to the support under the self-weight, and after the net frame is deflected and stabilized, the stress release is assembled. After completion, the support can be fixed on the top of the concrete column.

[0045] 9 trusses are divided into 3 segments, 3 trusses per segment, and after the second segment of the truss is slid to the position, the intermediate secondary truss is installed. After the first segment of the pipe truss is in place, the safety net at the bottom of the pipe truss is completely laid before other procedures are operated.

[0046] Through the above technical scheme, through the cooperation of the sliding track subsystem and the traction subsystem, the steel truss can be slid to the specified position, the relative speed of the two end winches can be adjusted to ensure the uniform sliding speed of the steel truss as a whole, and the construction risk of high-altitude hoisting operation is greatly reduced.

[0047] Finally, it should be noted that: the above has made a detailed description of the preferred embodiment of the patent, but the patent is not limited to the above-mentioned embodiments, within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the purpose of the patent.

Claims

1. A high-altitude, large-span steel truss sliding installation system, characterized by: Includes sliding track subsystem and traction subsystem; The sliding track subsystem includes a main frame, a track, a brake stop, a steel truss and a roller assembly. The track is paved on the top of the frame beams on both sides of the main frame, the brake stop is set at the end of the track, and the roller assembly is installed at the support points at both ends of the steel truss. The traction subsystem includes traction equipment and steel wire ropes installed at the starting and ending ends of the track. The traction equipment is connected to the corresponding ends of the steel truss through the steel wire rope. The traction equipment at one end is used to provide traction power, and the traction equipment at the other end provides a reverse force to limit the sliding speed.

2. The high-altitude large-span steel truss sliding installation system according to claim 1 is characterized in that: The width of the main frame and the span of the steel truss are both ≥30m.

3. The high-altitude large-span steel truss sliding installation system according to claim 2 is characterized in that: The load-bearing capacity of the roller group is ≥20t.

4. The high-altitude large-span steel truss sliding installation system according to claim 3 is characterized in that: The track is channel steel, and the channel steel model is 20# channel steel.

5. The high-altitude large-span steel truss sliding installation system according to claim 4 is characterized in that: The traction equipment is an electric hoist or a winch, and the power of the traction equipment is ≥20t.

6. The high-altitude large-span steel truss sliding installation system according to claim 5 is characterized in that: The steel truss includes two main trusses and a secondary truss for connecting the two main trusses.

7. The high-altitude large-span steel truss sliding installation system according to claim 6 is characterized in that: It also includes a jack, which is an independent component and is used to lift the steel truss.

8. The high-altitude large-span steel truss sliding installation system according to claim 7 is characterized in that: Four hanging points are arranged on the top of the steel truss, and the hanging points are located at the upper chord positions of the main truss.

9. The high-altitude large-span steel truss sliding installation system according to claim 8 is characterized in that: The roller assembly and the steel truss are fixed by bolts.

10. The high-altitude large-span steel truss sliding installation system according to claim 9 is characterized in that: The main frame has a length of ≥70m and a height of ≥40m.

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