Sliding device for roof steel net rack

Abstract

The utility model discloses a sliding device for a roof steel net rack, which belongs to the technical field of building installation engineering and comprises a sliding rail, a sliding shoe and a traction machine. And the sliding shoes can slide on the sliding rails. The traction machine comprises a plurality of steel strands, the steel strands are driven by the traction machine between the two ends of the sliding rail, and mounting assemblies detachably connected with the steel strands are arranged between the sliding shoes and the steel strands. When accumulative sliding needs to be carried out, the steel strand is released by dismounting the mounting assembly after the front-order net rack unit slides to the target position, the steel strand is prevented from interfering with the front-order unit, and then the steel strand is reconnected to the next sliding shoe to continue traction. Rapid connection and separation of the steel strand and the sliding shoe are achieved through the detachable installation assembly, the steel strand traction technology is expanded to staged accumulative sliding from a traditional overall sliding method, and the application scene of the steel strand traction method is widened.

Description

TECHNICAL FIELD

[0001] The utility model belongs to building installation engineering technical field, specifically is a kind of sliding device for roof steel net rack. BACKGROUND

[0002] Steel net rack structure is widely used in stadium, airport terminal, exhibition center and other large public buildings due to its large span, flexible modeling, high space utilization rate and other characteristics. With the development of modern architecture towards large span and complex spatial form, traditional high-altitude bulk method or integral lifting method gradually exposes defects such as long construction period, high cost of temporary support system and poor site adaptability. Under this background, sliding construction technology gradually becomes the mainstream method of large-span steel net rack construction due to its advantages of "grounding high-altitude operation and modularization of unit operation".

[0003] At present, sliding construction technology is mainly divided into cumulative sliding method and integral sliding method. Cumulative sliding construction usually uses hydraulic jacking robot to drive net rack unit to slide along preset track, and the whole installation is completed by cumulative sliding in sections. Hydraulic jacking robot clamps counterforce support on sliding track to realize intermittent jacking and net rack unit sliding. However, hydraulic jacking robot relies on rigid counterforce support, which is difficult to adapt to variable curvature track or large slope sliding conditions. The multi-pivot hydraulic propulsion system lacks high-precision synchronous control mechanism, and different synchronization phenomena may occur during sliding process, causing net rack member secondary stress overrun and serious structural deformation.

[0004] Steel strand traction is mainly used in integral sliding method, which uses hydraulic jack or winch to tension steel strand, and realizes continuous traction through anchor and net rack connection. Since integral traction only needs a small number of traction points, the translational motion of the whole structure can be realized through simple synchronization strategy. However, the whole sliding of grid rack requires large site area and lifting equipment, which cannot be used in some scenes. The continuous distribution of steel strand on track moving section and the interference of previous net rack unit to steel strand make it difficult to cumulatively slide and install net rack unit. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of sliding device for roof steel net rack to solve the problems in the prior art.

[0006] A kind of sliding device for roof steel net rack is provided, comprising:

[0007] Sliding track;

[0008] Sliding shoe, the sliding shoe can slide on sliding track;

[0009] Traction machine, which includes a plurality of steel strands, a plurality of steel strands are driven by traction machine between both ends of sliding track, and mounting assembly is arranged between sliding shoe and steel strand, which is detachably connected with steel strand.

[0010] Further, the installation assembly comprises a through slot formed in the side wall of the shoe and an anchor arranged between the steel strand and the through slot. The through slot serves as a channel for the steel strand, and the anchor achieves rapid force transmission and release through mechanical engagement.

[0011] Further, the through slot is formed by inwardly recessing the bottom wall of the shoe. The through slot is located at the bottom of the shoe, and when the subsequent steel frame unit is pulled, the shoe can be directly matched with the sliding rail from top to bottom, and the through slot serves as a structure part for avoiding the steel strand to prevent interference. The partially open structure of the through slot does not affect the compression of the shoe and the anchor.

[0012] Further, the through slot is provided with a plurality of expansion holes in the recessed direction, and the expansion holes are formed by inwardly recessing the side wall of the through slot. After the previous steel frame unit reaches the target position, the anchor is removed, and at this time, the through slot and the steel strand are in a free state. In order to prevent the steel strand from shaking or angularly deviating during the subsequent pulling process, thereby contacting and rubbing against the inner wall of the through slot, resulting in reduced wear resistance of the steel strand, the expansion holes are provided to avoid, thereby reducing the contact probability of the steel strand and the inner wall of the through slot.

[0013] Further, the shoe is provided with a guide wheel on both sides of the through slot through which the steel strand penetrates. The guide wheel can limit the movement of the steel strand, further limiting the movement of the steel strand, and in the state of steel strand tensioning, the contact and rubbing between the steel strand and the inner wall of the through slot is almost avoided.

[0014] Further, the sliding rail is provided with a traction machine at both ends for tensioning and pulling the steel strand. In the variable curvature track or large slope sliding working condition, the traction machines at both ends can respectively apply traction force at both ends of the steel frame unit, and more detailed traction operation can be performed, thereby improving the safety and stability of construction.

[0015] Further, the steel strand is circulated between the two traction machines. The steel strand forms a loop between the two traction machines, so that a single steel strand can drive multiple groups of shoes in a circulating manner, thereby improving the utilization rate of the steel strand and avoiding excessive length of the steel strand.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0017] The sliding shoe carrying net rack unit slides on the sliding track, the traction machine drives the steel strand to move, and drives the sliding shoe to advance or retreat. After the current sequence net rack unit reaches the target position, the connection between the sliding shoe under the net rack unit and the steel strand is released, so that the steel strand is disconnected with the net rack unit. Then the newly entered sliding shoe is installed and fixed with the steel strand at the starting position, and the subsequent net rack unit is installed on the sliding shoe, and the traction work of the next group of net rack units is carried out, and there is no interference between the steel strand and the previous sliding shoe during the period, so as to complete the cumulative sliding. The quick connection and separation of the steel strand and the sliding shoe are realized through the detachable mounting assembly, the steel strand traction technology is expanded from the traditional integral sliding method to the cumulative sliding method, and the application scene of the steel strand traction method is widened. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the drawings, and other drawings can be obtained according to the structures shown in the drawings without creative labor for those skilled in the art.

[0019] Figure 1 It is a whole structure schematic diagram of the sliding device for the roof steel net rack.

[0020] Figure 2 It is a whole structure schematic diagram of the sliding shoe provided by the utility model.

[0021] Figure 3 It is a partial structure schematic diagram of the sliding shoe provided by the utility model.

[0022] In the figure: 1, sliding track; 2, sliding shoe; 3, traction machine; 31, steel strand; 4, mounting assembly; 41, through slot; 411, expansion hole; 42, anchor; 5, guide wheel. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is described and explained in the following with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application. Based on the embodiments provided in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0024] It is apparent that the drawings in the following description merely show some examples or embodiments of the present application, and the present application can be applied to other similar situations without creative labor based on these drawings for those skilled in the art. In addition, it can be understood that although the efforts made in this development process can be complex and lengthy, some design, manufacture or production changes based on the technology disclosed in the present application are only routine technical means for those skilled in the art related to the disclosure of the present application, and should not be understood as insufficient disclosure of the present application.

[0025] However, unnecessary detailed description can be omitted. For example, there are cases where detailed description of well-known matters, repeated description of substantially the same structure is omitted. This is to avoid the following description unnecessarily becoming lengthy and to facilitate understanding by those skilled in the art. In addition, the drawings and the following description are provided to enable those skilled in the art to fully understand the present application, and are not intended to limit the subject matter recited in the claims.

[0026] Please refer to Figures 1-2 As shown in the drawings, in the embodiment of the utility model, a sliding device for roof steel net rack, including sliding track 1, sliding shoe 2 and traction machine 3. Sliding shoe 2 can slide on sliding track 1. Traction machine 3 includes several steel strands 31, several steel strands 31 are driven by traction machine 3 between both ends of sliding track 1, and sliding shoe 2 and steel strand 31 are provided with mounting assembly 4 detachably connected with steel strand 31.

[0027] Traction machine 3 drives steel strand 31 to move along sliding track 1, sliding shoe 2 is locked with steel strand 31 through mounting assembly 4, and the traction force of steel strand 31 is transmitted to sliding shoe 2 to push the net rack unit carried by sliding shoe 2 to slide. After the previous net rack unit is in place, mounting assembly 4 is disconnected, and steel strand 31 is disconnected with the through slot 41 of sliding shoe 2. New sliding shoe 2 is anchored with steel strand 31 through mounting assembly 4 at the starting point, and the subsequent net rack unit is installed on new sliding shoe 2, and the traction is circulated, and the previous sliding shoe 2 unit has no spatial interference with steel strand 31. Through dynamic disassembly and assembly, the spatial isolation of steel strand 31 and the previous sliding shoe 2 is realized, so that steel strand 31 can continuously slide in multiple segments, and the continuous traction advantage of steel strand 31 is retained. Through the detachable connection design of sliding shoe 2 and steel strand 31, the dynamic adaptation of steel strand 31 traction technology in the segmented cumulative sliding is realized.

[0028] The installation assembly 4 comprises a through slot 41 formed by recessing inwardly from the side wall of the shoe 2, and an anchor 42 clamping the steel strand 31 in contact with the through slot 41. The anchor 42 achieves quick force transmission and release through mechanical engagement, and adapts to the segmented construction requirement of accumulated slip. When the anchor 42 is released, the steel strand 31 is free to disengage from the through slot 41. The open structure of the through slot 41 cooperates with the modular anchor 42 to achieve free cooperation between the shoe 2 and the steel strand 31.

[0029] The through slot 41 is formed by recessing inwardly from the bottom wall of the shoe 2, optimizing the assembly path of the shoe 2 and the steel strand 31, and avoiding installation interference between the shoe 2 and the steel strand 31. When the shoe 2 is installed, it is vertically lowered from above the slip track 1, and the recessed structure of the through slot 41 avoids the already laid steel strand 31, and the shoe 2 is accurately aligned with the track. The recessed design of the bottom of the through slot 41 avoids spatial conflict between the shoe 2 and the steel strand 31.

[0030] Please refer to Figure 3 As shown, the through slot 41 is provided with a plurality of expansion holes 411 in the recessed direction, which are formed by recessing inwardly from the side wall of the through slot 41. When the steel strand 31 slightly swings during dynamic traction and adjustment, the inner wall of the expansion hole 411 can maintain a non-contact state with the steel strand 31. The expansion hole 411 reduces the risk of friction when the steel strand 31 is pulled by expanding the avoidance space of the inner wall of the through slot 41.

[0031] Please refer to Figure 2 As shown, the shoe 2 is provided with a guide wheel 5 on each side wall on both sides of the slot opening of the through slot 41 through which the steel strand 31 penetrates. The steel strand 31 is limited between the two guide wheels 5 before penetrating through the through slot 41, and the two guide wheels 5 apply radial constraints to the steel strand 31, which rolls in contact with the guide wheels 5. During the slip process, the guide wheels 5 rotate with the steel strand 31, and the frictional resistance is converted into rolling friction. The guide wheels 5 constrain the motion trajectory of the steel strand 31 by rolling, eliminating the hard contact friction between the steel strand 31 and the through slot 41, and avoiding the risk of stress concentration and wire breakage caused by surface scratching of the steel strand 31.

[0032] Please refer to Figure 1 As shown, traction machines 3 are arranged at both ends of the slip track 1 to tension the steel strand 31. The traction machines 3 at both ends simultaneously apply traction force to overcome the gravitational component of the steel grid, prevent the grid unit from sliding down, and control the running posture of the shoe 2 at the bend by adjusting the proportion of the traction force at both ends. The bidirectional traction machines 3 are symmetrically arranged at both ends of the slip track 1, forming a push-pull collaborative traction system, which adapts to complex working conditions.

[0033] The steel strand 31 is circulated between two traction machines 3, the traction machines 3 drive the steel strand 31 to form a closed loop movement, and the shoes 2 are temporarily fixed with the steel strand 31 through the mounting assembly 4. When a batch of shoes 2 reaches the end point, the traction machines 3 drive the steel strand 31 in reverse to the starting point to drive the shoes 2 in the later stage to move, without the need to rethread the rope. A single steel strand 31 can drive multiple groups of shoes 2, reducing material costs. The closed loop circulation design of the steel strand 31 realizes uninterrupted operation of traction and retreat, maximizing the utilization rate of the steel strand 31.

[0034] It should be noted that the present application is not limited to the above embodiments. The above embodiments are only examples, and embodiments having substantially the same configuration and playing the same role and effect as the technical idea within the scope of the technical solution of the present application are all included in the technical scope of the present application. In addition, within the scope of the main idea of the present application, various modifications that can be thought of by those skilled in the art are applied to the embodiments, and other ways constructed by combining part of the elements in the embodiments are also included in the scope of the present application.

Claims

1. A sliding device for a roofing steel grid, characterized in that, The utility model relates to a kind of sliding rail and traction machine, including: Sliding rail (1); Shoe (2), shoe (2) can slide on sliding rail (1); Traction machine (3) includes several steel strands (31), several steel strands (31) are driven between the both ends of sliding rail (1) by traction machine (3), and mounting assembly (4) is arranged between shoe (2) and steel strand (31) with steel strand (31) detachable connection.

2. The sliding device for roof steel truss according to claim 1, characterized in that, The mounting assembly (4) includes through slot (41) and anchor (42), the through slot (41) is formed in the side wall of shoe (2), and the anchor (42) is arranged between steel strand (31) and through slot (41).

3. The sliding device for roof steel truss according to claim 2, characterized in that, The through slot (41) is formed by the bottom wall of shoe (2) inwardly recessed.

4. The sliding device for roof steel truss according to claim 3, characterized in that, The through slot (41) is provided with several expansion holes (411) along the recess direction, and the expansion hole (411) is formed by the side wall of through slot (41) inwardly recessed.

5. The sliding device for roof steel truss according to claim 3, characterized in that, The shoe (2) is provided with a guide wheel (5) on the both sides of the side wall of the slot opening through which the steel strand (31) penetrates.

6. The sliding device for roof steel truss according to claim 1, characterized in that, Both ends of the sliding rail (1) are provided with traction machines (3) to tension and pull the steel strands (31).

7. The sliding device for roof steel truss according to claim 6, characterized in that, The steel strands (31) circulate between the two traction machines (3).

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