Rapid and accurate positioning device for lower lifting appliance before rotary lifting of net rack

Abstract

The utility model discloses a quick and accurate positioning device for a lower lifting appliance before rotary lifting of a net rack. The quick and accurate positioning device comprises a limiting support, a coarse adjustment pipe assembly, a fine adjustment spiral assembly, a ball head and ball bowl structure and a lifting appliance base, four coarse adjustment pipe assemblies are arranged on the limiting support, and the top of each coarse adjustment pipe assembly is connected with a ball head and ball bowl structure through a fine adjustment spiral assembly. The lifting appliance base comprises a base bottom plate and a positioning column fixed on the upper surface of the base bottom plate, the lower lifting appliance is movably arranged on the positioning column in a sleeving manner, and the lower surface of the lower lifting appliance is in contact with the base bottom plate; the ball head and ball bowl structure comprises a ball bowl and a ball pin, the ball bowl is movably buckled on the ball pin, the top of the ball bowl is fixedly connected with the lower surface of the base bottom plate, and the lower end of the ball pin is fixedly connected with the fine adjustment spiral assembly; the device can quickly assist in precise positioning and mounting of the lower lifting appliance of the assembled net rack which is rotated and laid flat, and the safety risk that the inner wall of a core cylinder collides with a steel strand due to errors of the space position and the mounting angle of the lower lifting appliance is effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a net rack construction technical field especially relates to a kind of quick and accurate positioning device for net rack rotation before lifting. BACKGROUND

[0002] With the development of China's economy, the artistic, ornamental of building structure is also constantly improved, and various novel buildings are constantly emerging. Net rack structure is increasingly applied to airport, stadium and other large-span complex space structure due to its light weight, large space stiffness, good overall stability and good seismic performance, so the construction difficulty is also greatly increased.

[0003] For the net rack with large height difference of space structure, in order to improve the net rack assembly efficiency, the net rack unit module is usually rotated and laid flat according to the center of gravity of the shell. When the net rack is lifted, the net rack is restored to the design posture by using the lifting device. Since the lower lifting appliance is rigidly connected with the net rack ball joint through the lifting rod, the lower lifting appliance will also rotate when the net rack ball joint rotates. The problem existing in this process is that when the net rack is laid flat, the lifting lower lifting appliance is also rotated and laid flat, the lower lifting appliance steel strand lower anchor point and the lifting point of the lifting device are not on a vertical line, and the steel strand and the plumb line will form an inclined angle. When the spatial position or installation angle of the lower lifting appliance is large, the core barrel inner wall of the lower lifting appliance exists the risk of clamping the steel strand, and the accurate lifting of the net rack cannot be guaranteed. In order to avoid this risk and ensure that the lower lifting appliance is in a vertical posture after the net rack is rotated and positioned, the lower lifting appliance needs to be accurately installed, therefore, it is urgent to provide a quick and accurate positioning device for the lower lifting appliance before the net rack is rotated and lifted. SUMMARY

[0004] In view of the above problems, the utility model provides a quick and accurate positioning device for the lower lifting appliance before the net rack is rotated and lifted, which aims to quickly assist the installation and positioning of the lower lifting appliance before the net rack is rotated and lifted, and ensure the stability of the net rack during the rotation and lifting process, so as to avoid the problem of clamping the steel strand of the lower lifting appliance.

[0005] A quick and accurate positioning device for the lower lifting appliance before the net rack is rotated and lifted, comprising: a limiting support, a coarse adjustment pipe assembly, a fine adjustment screw assembly, a ball head ball bowl structure and a lifting appliance base;

[0006] Four coarse adjustment pipe assemblies are arranged on the limiting support, and the top of each coarse adjustment pipe assembly is connected with a ball head ball bowl structure through a fine adjustment screw assembly, and the top end of the ball head ball bowl structure is connected with the lower surface of the lifting appliance base;

[0007] The lifting appliance base comprises a base bottom plate and a positioning column fixed on the upper surface of the base bottom plate, the lower lifting appliance is movably sleeved on the positioning column, and the lower surface of the lower lifting appliance is in contact with the base bottom plate.

[0008] The ball head ball bowl structure comprises a ball bowl and a ball pin, the ball bowl is movably buckled on the ball pin, the top of the ball bowl is fixedly connected with the lower surface of the base bottom plate, and the lower end of the ball pin is fixedly connected with the fine adjustment screw assembly.

[0009] In some embodiments, the ball pin comprises a ball pin rod and a ball head fixedly connected with the top of the ball pin rod, the ball head is matched with the ball bowl, and the ball bowl is movably buckled on the ball head.

[0010] In some embodiments, the fine adjustment screw assembly comprises a top plate, a bottom plate, a threaded sleeve and a threaded connecting rod.

[0011] The upper part and the lower part of the threaded connecting rod are both threadedly connected with the threaded sleeves, the top plate is connected with the threaded sleeve located above, and the bottom plate is connected with the threaded sleeve located below.

[0012] In some embodiments, the outer wall of the threaded connecting rod is fixedly connected with a push stop rod.

[0013] In some embodiments, the coarse adjustment pipe assembly comprises an upper adjustment pipe, a lower adjustment pipe and a plug screw.

[0014] Plug holes are arranged on the pipe wall of the upper adjustment pipe and the lower adjustment pipe at equal intervals, the lower adjustment pipe is arranged on the limiting support, and the bottom end of the upper adjustment pipe is telescopically arranged in the lower adjustment pipe.

[0015] The upper adjustment pipe and the lower adjustment pipe are connected through the plug screw arranged in the plug hole.

[0016] In some embodiments, the coarse adjustment pipe assembly further comprises a plug nut matched with the plug screw.

[0017] In some embodiments, the limiting support comprises a support bottom plate and a support limiting pipe fixedly arranged on the support bottom plate.

[0018] In some embodiments, the lower end of the coarse adjustment pipe assembly is sleeved on the support limiting pipe.

[0019] Compared with the prior art, the utility model has at least one of the following advantages or beneficial effects:

[0020] (1) The lower sling rapid and accurate positioning device for the net rack before rotation and lifting can quickly and accurately position and install the assembled net rack lower sling which is rotated and laid flat, and can be folded and moved, is convenient to recover, and is fast, safe and reliable in assisting construction, thereby greatly improving the construction efficiency.

[0021] (2) The lower sling rapid and accurate positioning device for the net rack before rotation and lifting provided by the utility model effectively reduces the safety risk of the steel strand being clamped and collided with the inner wall of the lower sling core barrel caused by the spatial position and installation angle error of the lower sling, and ensures the accurate lifting and positioning of the net rack.

[0022] (3) The lower sling rapid and accurate positioning device for the net rack before rotation and lifting provided by the utility model can be used circularly as a finished product, thereby reducing the installation measure cost of the lower sling and facilitating the implementation of the construction site standardization. BRIEF DESCRIPTION OF DRAWINGS

[0023] The utility model and its features, shape and advantages will become more apparent by reading the following detailed description of the non-limiting embodiments with reference to the accompanying drawings. The same reference signs indicate the same parts throughout the drawings. The drawings can not be drawn to scale, the emphasis being on illustrating the main principles of the utility model.

[0024] Figure 1 It is a whole three-dimensional schematic view of the lower sling rapid and accurate positioning device for the net rack before rotation and lifting in the utility model embodiment;

[0025] Figure 2 It is a top view of the lower sling rapid and accurate positioning device for the net rack before rotation and lifting in the utility model embodiment;

[0026] Figure 3 It is Figure 2 the sectional view of the position 1-1 in the middle;

[0027] Figure 4 It is Figure 2 the sectional view of the position 2-2 in the middle;

[0028] Figure 5 It is Figure 2 the sectional view of the position 3-3 in the middle;

[0029] Figure 6a It is a perspective view of the sling base in the utility model embodiment;

[0030] Figure 6b It is a top view of the sling base in the utility model embodiment;

[0031] Figure 6c It is Figure 6b the sectional view of the position 4-4 in the middle;

[0032] Figure 7a It is a perspective view of the ball head ball bowl in the utility model embodiment;

[0033] Figure 7b It is a front view of the ball head ball bowl in the utility model embodiment;

[0034] Figure 7c For Figure 7b Cross-sectional view at A-A in the middle;

[0035] Figure 7d For Figure 7b Cross-sectional view at 5-5 in the middle;

[0036] Figure 8a It is the perspective view of the fine adjustment screw assembly in the embodiment of the utility model;

[0037] Figure 8b It is the front view of the fine adjustment screw assembly in the embodiment of the utility model;

[0038] Figure 8c For Figure 8b Cross-sectional view at B-B in the middle;

[0039] Figure 8d For Figure 8b Cross-sectional view at 6-6 in the middle;

[0040] Figure 9 It is the structure diagram of the threaded sleeve in the fine adjustment screw assembly in the embodiment of the utility model;

[0041] Figure 10 It is the structure diagram of the threaded connecting rod and the push-off rod in the fine adjustment screw assembly in the embodiment of the utility model;

[0042] Figure 11 It is the structure diagram of the coarse adjustment pipe assembly in the fine adjustment screw assembly in the embodiment of the utility model;

[0043] Figure 12 It is the assembly diagram of the pin screw and the pin nut of the coarse adjustment pipe assembly in the fine adjustment screw assembly in the embodiment of the utility model;

[0044] Wherein, 01 is a lifting appliance base; 011 is a base bottom plate; 012 is a positioning column; 02 is a ball head ball bowl structure; 021 is a ball bowl; 022 is a ball pin; 03 is a fine adjustment screw assembly; 031 is a top plate; 032 is a bottom plate; 033 is a threaded sleeve; 034 is a threaded connecting rod; 035 is a push-off rod; 04 is a coarse adjustment pipe assembly; 041 is an upper adjusting pipe; 042 is a lower adjusting pipe; 043 is a pin screw; 044 is a pin nut; 045 is a pin hole; 05 is a limiting support; 051 is a support bottom plate; 052 is a support limiting pipe; 06 is a steel strand; 07 is a lower lifting appliance; 08 is a lifting rod piece. DETAILED DESCRIPTION

[0045] The utility model will be further explained in combination with the drawings and specific embodiments, but not as the limitation of the utility model.

[0046] AsFigures 1 to 5 The utility model discloses a kind of lower sling fast and accurate positioning devices for net rack rotation before lifting, specifically, the lower sling fast and accurate positioning device includes: limiting support 05, coarse adjustment pipe assembly 04, fine adjustment screw assembly 03, ball head ball bowl structure 02 and sling base 01;Four coarse adjustment pipe assembly 04 are provided on the limiting support 05, and the top of each coarse adjustment pipe assembly 04 is connected with a ball head ball bowl structure 02 by a fine adjustment screw assembly 03, and the top of the ball head ball bowl structure 02 is connected with the lower surface of sling base 01;As Figures 6a to 6c As shown, the sling base 01 includes base bottom plate 011 and positioning column 012 welded and fixed on the upper surface of base bottom plate 011, the positioning column 012 adopts stainless steel pipe, the lower sling 07 movably sheaths positioning column 012, and the lower surface of the lower sling 07 is in contact with the upper surface of base bottom plate 011;As Figures 7a to 7d As shown, the ball head ball bowl structure 02 includes ball bowl 021 and ball pin 022, the ball bowl 021 movably buckles on ball pin 022, to ensure that ball pin 022 can rotate flexibly inside ball bowl 021, and the top of the ball bowl 021 is fixedly connected with the lower surface of base bottom plate 011, and the lower end of the ball pin 022 is fixedly connected with fine adjustment screw assembly 03;Specifically, the ball pin 022 includes ball pin rod and ball head fixed on the top of ball pin rod, the ball head is matched with ball bowl 021, and ball bowl 021 movably buckles on ball head.

[0047] Specifically, as shown in Figures 8a to 8d , Figure 9 And Figure 10 The fine adjustment screw assembly 03 includes top plate 031, bottom plate 032, threaded sleeve 033 and threaded connecting rod 034;The upper portion and lower portion of the threaded connecting rod 034 are both threadedly connected with threaded sleeve 033, the top plate 031 is welded and connected at the top of the threaded sleeve 033 located upwards, the bottom plate 032 is welded and connected at the bottom of the threaded sleeve 033 located downwards, four stop levers are welded and connected on the outer wall of the threaded connecting rod 034, by rotating the threaded connecting rod 034 by poking stop lever, the two threaded sleeves 033 can be made to approach or move away from each other, to adjust the length of the fine adjustment screw assembly 03.

[0048] As Figure 11 And 12As shown in the rough adjustment pipe assembly 04 includes the upper adjusting pipe 041, the lower adjusting pipe 042, the pin screw rod 043 and the pin screw nut 044; the upper adjusting pipe 041 and the lower adjusting pipe 042 are provided with pin holes 045 on the pipe wall at equal intervals along the length direction, the lower adjusting pipe 042 is arranged on the limiting support 05, the lower end of the upper adjusting pipe 041 is telescopically arranged in the lower adjusting pipe 042, the rough adjustment pipe assembly 04 can adjust the height by the telescopic nesting of the upper adjusting pipe 041 and the lower adjusting pipe 042; the pin screw rod 043 can freely pass through the pin hole 045, and the length of the rough adjustment pipe assembly 04 can be fixed by cooperating with the pin screw nut 044.

[0049] The limiting support 05 includes a support bottom plate 051 and a support limiting pipe 052 welded and fixed on the support bottom plate 051, and the lower end of the rough adjustment pipe assembly 04 is sleeved on the support limiting pipe 052.

[0050] In use, the support bottom plate 051 is horizontally arranged on the ground layout point projected by the total station, the position of the support bottom plate 051 is adjusted so that the center point of the support limiting pipe 052 coincides with the ground layout point. According to the different rotation angles of the lower lifting tool 07, the rotation posture of the lower lifting tool 07 is roughly adjusted by adjusting the telescopic nesting length of the upper adjusting pipe 041 and the lower adjusting pipe 042 of the rough adjustment pipe assembly 04, and the length of the rough adjustment pipe assembly 04 is fixed by using the pin screw rod 043 and the pin screw nut 044. Then the distance between the threaded sleeve 033 and the threaded connecting rod 034 is accurately adjusted by rotating the shift lever of the fine adjustment screw assembly 03, so that the space angle and the position of the lifting tool base 01 are correct, the lower lifting tool 07 is movably sleeved on the positioning column 012, and the lower surface of the lower lifting tool 07 is in contact with the upper surface of the base bottom plate 011, the lower lifting tool 07 and the steel net rack spherical node are fixed and installed by the lifting rod 08, and finally the telescopic nesting length of the rough adjustment pipe assembly 04 is adjusted, the lower lifting tool quick and accurate positioning device is pulled out from below the lower lifting tool 07, so that the quick and accurate positioning of the lower lifting tool 07 is completed, and then the lower end of the steel strand 06 is connected to the lower lifting tool 07 through the bottom anchor of the net rack hydraulic lifting system.

[0051] In summary, the utility model provides a kind of for the auxiliary lower lifting tool quick and accurate positioning device when net rack rotates and lifts, lower lifting tool is rotated according to net rack rotation parameter, according to the different rotation angles of lower lifting tool, the four rough adjustment pipe assemblies and fine adjustment screw assemblies of the quick positioning device are adjusted, and lower lifting tool is quickly and accurately positioned with the aid of auxiliary construction process. Ensure that the net rack is stable during rotation and lifting, and avoid the problem of lower lifting tool clamping steel strand. The device is designed ingeniously, simple to make, and auxiliary construction process is fast, safe and reliable.

[0052] Those skilled in the art should understand that the skilled in the art can realize the variants in combination with the prior art and the above-mentioned embodiments, which are not described here. Such variants do not affect the essential content of the present application, and are not described here.

[0053] The preferred embodiments of the present application are described above. It should be understood that the present application is not limited to the specific embodiments described above, and that the devices and structures not described in detail should be understood as being implemented in the ordinary way in the art; any person skilled in the art, without departing from the scope of the technical scheme of the present application, can make many possible changes and modifications to the technical scheme of the present application by using the disclosed methods and technical contents, or modify it into equivalent embodiments with equivalent changes, which does not affect the essential content of the present application. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application, which does not deviate from the content of the technical scheme of the present application, still belongs to the scope of protection of the technical scheme of the present application.

Claims

1. A device for quickly and accurately positioning a lower sling before the rotation and lifting of a space truss, characterized in that, The utility model relates to a lifting device for lifting and adjusting the height of a crane, comprising: a limiting support, a coarse adjustment pipe assembly, a fine adjustment screw assembly, a ball head and ball bowl structure and a lifting device base; four coarse adjustment pipe assemblies are arranged on the limiting support, and the top of each coarse adjustment pipe assembly is connected with a ball head and ball bowl structure through a fine adjustment screw assembly; the lifting device base comprises a base bottom plate and a positioning column fixed on the upper surface of the base bottom plate, a lower lifting device is movably sleeved on the positioning column, and the lower surface of the lower lifting device is in contact with the base bottom plate; the ball head and ball bowl structure comprises a ball bowl and a ball pin, the ball bowl is movably buckled on the ball pin, the top of the ball bowl is fixedly connected with the lower surface of the base bottom plate, and the lower end of the ball pin is fixedly connected with the fine adjustment screw assembly.

2. The quick and accurate positioning device for the lower lifting tool before the rotation lifting of the space truss according to claim 1, characterized in that, the ball pin comprises a ball pin rod and a ball head fixed on the top of the ball pin rod, the ball head is matched with the ball bowl, and the ball bowl is movably buckled on the ball head.

3. The quick and accurate positioning device for the lower lifting tool before the rotation lifting of the space truss according to claim 1, characterized in that, the fine adjustment screw assembly comprises a top plate, a bottom plate, a threaded sleeve and a threaded connecting rod; the upper and lower parts of the threaded connecting rod are threadedly connected with threaded sleeves, the top plate is connected with the threaded sleeve located above, and the bottom plate is connected with the threaded sleeve located below.

4. The quick and accurate positioning device for the lower lifting tool before the rotation lifting of the space truss according to claim 3, characterized in that, a push stop rod is fixedly connected to the outer wall of the threaded connecting rod.

5. The quick and accurate positioning device for the lower lifting tool before the rotation lifting of the space truss according to claim 1, characterized in that, the coarse adjustment pipe assembly comprises an upper adjusting pipe, a lower adjusting pipe and a bolt screw rod; plug hole is arranged on the pipe wall of the upper adjusting pipe and the lower adjusting pipe at equal intervals, the lower adjusting pipe is arranged on the limiting support, and the bottom end of the upper adjusting pipe is telescopically arranged in the lower adjusting pipe; the upper adjusting pipe and the lower adjusting pipe are connected through the bolt screw rod penetrating the plug hole.

6. The quick and accurate positioning device for the lower lifting tool before the rotation lifting of the space truss according to claim 5, characterized in that, the coarse adjustment pipe assembly further comprises a bolt nut matched with the bolt screw rod.

7. The quick and accurate positioning device for the lower lifting tool before the rotation lifting of the space truss according to claim 1, characterized in that, the limiting support comprises a support bottom plate and a support limiting pipe fixed on the support bottom plate.

8. The quick and accurate positioning device for the lower sling before the rotation and lifting of the space truss according to claim 7, characterized in that, the lower end of the coarse adjustment pipe assembly is sleeved on the support limiting pipe.

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