Welded ball net rack positioning device for large-span steel structure building

Abstract

The utility model relates to the technical field of steel structures, in particular to a welding ball net rack positioning device for a large-span steel structure building, which comprises a ball diameter adjusting mechanism, a height adjusting mechanism and a bottom supporting mechanism, the ball diameter adjusting mechanism comprises a circular self-positioning circle center mechanism and at least three ball supporting supports; the at least three ball supporting supports are annularly distributed at the top of the circular self-positioning circle center mechanism by taking the center of the circular self-positioning circle center mechanism as a circle center; the ball supporting support is movably matched with the circular self-positioning circle center mechanism and gets close to or away from the center of the circular self-positioning circle center mechanism in the radial direction so as to support welding balls of different diameters. The bottom of the height adjusting mechanism is connected with the bottom supporting mechanism, and the top of the height adjusting mechanism is connected with the circular self-positioning circle center mechanism and used for adjusting the height of the ball diameter adjusting mechanism. By means of the positioning device, the assembling efficiency of the welded ball net rack can be effectively improved, and the positioning and supporting precision is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel structures, and in particular relates to a welding ball grid positioning device used for large-span steel structure buildings. Background Art

[0002] With the development of building structures, large-span applications in various fields are constantly being updated. Grid structures are a common structural form, with welded ball nodes and bolted ball nodes being the common node types. Welded ball nodes are particularly widely used due to their stable connections, good load-bearing capacity, high structural stability, and aesthetically pleasing joints. Currently, the most common installation method involves using steel supports on the lower portion of the welded sphere and performing precision measurements using measuring equipment such as total stations. However, deviations in the support height require further cutting, which is time-consuming and labor-intensive. Furthermore, the steel supports used cannot accommodate welded balls of different diameters within the same project, resulting in low overall installation efficiency and a limited scope of application. Utility Model Content

[0003] In view of the problems existing in the above-mentioned existing construction technology, the utility model provides a welding ball grid positioning device for large-span steel structure buildings, which solves the problems of low assembly efficiency and low precision of the existing welding ball grid.

[0004] The utility model proposes a welding ball grid positioning device for large-span steel structure buildings, comprising: a ball diameter adjustment mechanism, a height adjustment mechanism and a bottom support mechanism; the ball diameter adjustment mechanism comprises: a circular self-positioning center mechanism and at least 3 ball-holding supports; at least 3 ball-holding supports are distributed in a ring shape on the top of the circular self-positioning center mechanism with the center of the circular self-positioning center mechanism as the center; the ball-holding supports are movably coordinated with the circular self-positioning center mechanism, radially approaching or moving away from the center of the circular self-positioning center mechanism to support welding balls of different diameters; the bottom of the height adjustment mechanism is connected to the bottom support mechanism, and the top of the height adjustment mechanism is connected to the circular self-positioning center mechanism, for adjusting the height of the ball diameter adjustment mechanism.

[0005] Furthermore, the ball diameter adjustment mechanism also includes a fixed disc; the fixed disc is arranged on the top of the circular self-positioning center mechanism; a plurality of fixed track grooves are provided on the fixed disc; the length direction of the fixed track groove is arranged along the radial direction of the fixed disc, and the bottom of the ball support passes through the fixed track groove and is movably cooperated with the circular self-positioning center mechanism.

[0006] Furthermore, the center of the fixed disc and the center of the circular self-positioning center mechanism are located on the same vertical line.

[0007] Furthermore, a radial scale line is provided on the top of the fixed disc on one side of the fixed track groove.

[0008] Furthermore, the circular self-positioning centering mechanism includes a self-positioning centering disc; a plurality of arc grooves are provided on the self-positioning centering disc; one end of the arc groove is close to the center of the self-positioning centering disc, and the other end points to the outer edge of the self-positioning centering disc; the bottom of the ball support passes through the fixed track groove and the arc groove in sequence.

[0009] Furthermore, the ball diameter adjustment mechanism also includes a knob mechanism; the knob mechanism is connected to the self-positioning and centering disc, and is used to drive the self-positioning and centering disc to rotate.

[0010] Furthermore, the circular self-positioning centering mechanism also includes a first bevel gear; the first bevel gear is arranged at the bottom center of the self-positioning centering disc; the knob mechanism includes a second bevel gear and an adjustment knob; the second bevel gear is meshed with the first bevel gear, and one end of the adjustment knob is connected to the second bevel gear for driving the second bevel gear to rotate.

[0011] Furthermore, the self-positioning and centering disc is provided with a plurality of limiting holes; the fixed disc is provided with a limiting screw, and the limiting screw cooperates with any of the limiting holes.

[0012] Furthermore, the height adjustment mechanism includes a pad, an adjustment handle, a screw, a threaded sleeve and a base; the threaded sleeve is fixed on the base, and the base is connected to the bottom support mechanism; the screw is threadedly engaged with the threaded sleeve, and the upper end of the screw is fixedly connected to the pad, and the pad is connected to the fixed disc; the adjustment handle is connected to the pad.

[0013] Furthermore, the bottom support mechanism includes a supporting circular tube, a rib plate and a supporting bottom plate; the top of the supporting circular tube is connected to the base, the bottom of the screw passes through the base and extends into the supporting circular tube, the bottom of the supporting circular tube is connected to the supporting bottom plate, and the rib plate connects the supporting circular tube and the supporting bottom plate.

[0014] The beneficial effects of the present invention are as follows: the ball support of the ball diameter adjustment mechanism can be radially moved closer to or farther away from the center of the circular self-positioning center mechanism to support welding balls of different diameters, thereby being suitable for positioning and supporting welding balls of different sizes; the height of the ball diameter adjustment mechanism can be adjusted by the height adjustment mechanism, and the height of the welding balls can be adjusted according to the needs of the construction project; the positioning device of the present invention can effectively improve the assembly efficiency of the welding ball grid and improve the positioning and support accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1This is a structural diagram of a welded ball grid positioning device for a large-span steel structure building according to the present invention;

[0016] Figure 2 for Figure 1 Schematic diagram of the structure of the middle ball diameter adjustment mechanism;

[0017] Figure 3 for Figure 2 Schematic diagram of the structure of the self-positioning and centering disc;

[0018] Figure 4 for Figure 2 Schematic diagram of the structure of the middle knob mechanism.

[0019] In the figure: 1-welding ball; 2-ball diameter adjustment mechanism; 21-ball support; 22-fixed track groove; 23-circular self-positioning center mechanism; 231-self-positioning centering disc; 232-limiting hole; 233-first bevel gear; 24-knob mechanism; 241-second bevel gear; 242-adjusting knob; 25-radial scale line; 26-limiting screw; 27-fixed disc; 3-height adjustment mechanism; 31-pad; 32-adjusting handle; 33-screw; 34-threaded sleeve; 35-base; 4-bottom support mechanism; 41-supporting circular tube; 42-rib plate; 43-supporting bottom plate. DETAILED DESCRIPTION

[0020] The following is a further detailed description of this application with reference to the accompanying drawings and specific implementations:

[0021] like Figures 1-4 The welded ball grid positioning device shown is used for a large-span steel structure building, comprising: a welding ball 1, a ball diameter adjustment mechanism 2, a height adjustment mechanism 3 and a bottom support mechanism 4.

[0022] Welding ball 1 is part of an existing steel structure grid. It is supported by ball support 21 of ball diameter adjustment mechanism 2. The bottom of fixed disc 27 of ball diameter adjustment mechanism 2 is fixedly connected to pad 31 of height adjustment mechanism 3. The base of height adjustment mechanism 3 is mounted on support tube 41 of bottom support mechanism 4.

[0023] The height adjustment mechanism 3 includes a pad 31, an adjustment handle 32, a screw 33, a threaded sleeve 34 sleeved on the screw 33, and a base 35; the bottom support mechanism 4 includes a supporting circular tube 41, a rib 42, and a supporting bottom plate 43; the two ends of the rib 42 are fixedly connected to the supporting circular tube 41 and the supporting bottom plate 43 respectively, and the ribs 42 are evenly arranged along the four directions of the supporting circular tube 41.

[0024] By rotating the adjustment handle 32, the screw 33 can be raised or lowered, allowing the welded ball 1 to reach a specified height. A through-hole for the screw 33 is provided on the base 35. The adjustment handle 32 is fixed to the pad 31, which is also fixed to the screw 33. Thus, the adjustment handle 32 can be used to drive the pad 31 and the screw 33 to rotate. The screw 33 is threadedly connected to the threaded sleeve 34. As the rotating screw 33 rises or falls relative to the fixed threaded sleeve 34, the corresponding ball diameter adjustment mechanism 2 and the welded ball 1 supported thereon rise and fall synchronously. As the screw 33 descends, its bottom portion can extend into the interior of the support tube 41, which provides space for the screw 33 to descend.

[0025] like Figure 2 As shown, the ball diameter adjustment mechanism 2 includes a fixed disc 27, six ball supports 21 for supporting the welding ball 1, six fixed track grooves 22 provided on the fixed disc 27, a circular self-positioning center mechanism 23 for driving the ball supports 21 to move, and a knob mechanism 24 connected to the circular self-positioning center mechanism 23 via gear engagement. The radius of the fixed disc 27 is set to 350mm, and radial scale lines 25 are provided on one side of the fixed track grooves 22 of the fixed disc 27. The radial scale lines 25 and the fixed track grooves 22 are both extended from the center of the fixed disc 27 to the outer edge, or are said to be arranged along the radial direction of the fixed disc 27. A large scale is set every 50mm and assigned a value, and a small scale is set every 25mm without an assigned value. The specific scales are 50mm, 100mm, 150mm, 200mm, 250mm, and 300mm, respectively, and the small scales are 75mm, 125mm, 175mm, 225mm, and 275mm. Applicable to ball diameters ranging from 70mm to 800mm, it can meet the needs of more than 90% of construction projects.

[0026] like Figure 3 As shown, the circular self-positioning centering mechanism 23 includes a self-positioning centering disc 231, multiple limiting holes 232, and a first bevel gear 233. The first bevel gear 233 is fixed at the bottom center of the self-positioning centering disc 231, and the first bevel gear 233 coincides with the central axis of the self-positioning centering disc 231.

[0027] like Figure 4 As shown, the knob mechanism 24 includes a second bevel gear 241 and an adjustment knob 242. The second bevel gear 241 meshes with the first bevel gear 233. Rotation of the second bevel gear 241 drives the first bevel gear 233, which in turn causes the self-positioning and centering disc 231 to rotate accordingly. In some embodiments, the welded ball grid positioning device further includes a device housing or a device frame, and the knob mechanism 24 is mounted on the device bracket. In some embodiments, the self-positioning and centering disc 231 of the circular self-positioning centering mechanism 23 can be rotated directly manually. A construction worker can drive the self-positioning and centering disc 231 by directly applying a torsional force to the self-positioning and centering disc 231.

[0028] The ball support 21 is a vertical rod structure with an inclined surface or an arc surface on the top for contacting the welding ball 1. The bottom of the ball support 21 passes through the fixed track groove 22 and the arc groove provided on the self-positioning and centering disc 231. When the self-positioning and centering disc 231 rotates, each arc groove has an overlapping area with the fixed track groove 22 above it. The bottom of the ball support 21 is inserted into the overlapping area, and as the self-positioning and centering disc 231 rotates, the position of the overlapping area changes along the direction of the fixed track groove 22. Therefore, when the self-positioning and centering disc 231 rotates, the six ball supports 21 thereon are driven to move synchronously along the fixed track groove 22. The six ball supports 21 gather together or move away from each other to accommodate welding balls 1 of different diameters.

[0029] After the welding ball 1 is supported, the limiting screw 26 on the fixed disc 27 is inserted into any appropriate limiting hole 232 on the self-positioning and centering disc 231 to limit the six ball supports 21 from moving along the fixed track groove 22 .

[0030] The construction steps of the welding ball grid positioning device for large-span steel structure buildings of the utility model are as follows:

[0031] Step 1: Use a total station to lay out the preliminary plane position of the installation on the installation site, manually set the marking line, and place the welding ball grid positioning device on the marking line.

[0032] Step 2: Rotate the adjustment handle 32 to move the screw 33 up and down, driving the upper ball diameter adjustment mechanism 2 to rise to a specified height.

[0033] Step 3: rotate the second bevel gear 241 by adjusting the knob 242. The rotation of the second bevel gear 241 drives the first bevel gear 233 and the circular self-positioning center mechanism 23 to rotate around the center of the fixed disk 27, so that the ball support 21 slides along the fixed track groove 22 to the specified position.

[0034] Step 4: Insert the limiting screw 26 into the limiting hole 232 .

[0035] Step 5: hoist the welding ball 1 onto the ball support 21 .

[0036] Step 6, turn the adjustment handle 32 again to fine-tune the height of the welding ball 1 to refer to the installation height, weld the welding ball 1 to the steel structure, reverse the adjustment handle 32, lower the ball diameter adjustment mechanism 2 until the ball support 21 is lower than the welding ball 1, and after completing the welding work of welding 1, transfer the welding ball grid positioning device to the next construction position to carry out the welding construction of the next welding ball 1.

[0037] The above are only preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be pointed out that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A welding ball grid positioning device for large-span steel structure buildings, characterized in that: include: Ball diameter adjustment mechanism, height adjustment mechanism and bottom support mechanism; The ball diameter adjustment mechanism includes: a circular self-positioning center mechanism and at least 3 ball supports; at least 3 ball supports are distributed in a ring on the top of the circular self-positioning center mechanism with the center of the circular self-positioning center mechanism as the center; the ball supports are movably coordinated with the circular self-positioning center mechanism, radially approaching or moving away from the center of the circular self-positioning center mechanism to support welding balls of different diameters; the bottom of the height adjustment mechanism is connected to the bottom support mechanism, and the top of the height adjustment mechanism is connected to the circular self-positioning center mechanism, for adjusting the height of the ball diameter adjustment mechanism.

2. A welding ball grid positioning device for a large-span steel structure building according to claim 1, characterized in that: The ball diameter adjustment mechanism also includes a fixed disc; the fixed disc is arranged on the top of the circular self-positioning center mechanism; a plurality of fixed track grooves are provided on the fixed disc; the length direction of the fixed track grooves is arranged along the radial direction of the fixed disc, and the bottom of the ball support passes through the fixed track grooves and is movably cooperated with the circular self-positioning center mechanism.

3. A welding ball grid positioning device for a large-span steel structure building according to claim 2, characterized in that: The center of the fixed disc and the center of the circular self-positioning center mechanism are located on the same vertical line.

4. A welding ball grid positioning device for a large-span steel structure building according to claim 2, characterized in that: The top of the fixed disc is located on one side of the fixed track groove and is provided with radial scale lines.

5. A welding ball grid positioning device for a large-span steel structure building according to claim 2, characterized in that: The circular self-positioning centering mechanism includes a self-positioning centering disc; a plurality of arc grooves are provided on the self-positioning centering disc; one end of the arc groove is close to the center of the self-positioning centering disc, and the other end points to the outer edge of the self-positioning centering disc; the bottom of the ball support passes through the fixed track groove and the arc groove in sequence.

6. A welding ball grid positioning device for a large-span steel structure building according to claim 5, characterized in that: The ball diameter adjustment mechanism further includes a knob mechanism; the knob mechanism is connected to the self-positioning and centering disc and is used to drive the self-positioning and centering disc to rotate.

7. A welding ball grid positioning device for a large-span steel structure building according to claim 6, characterized in that: The circular self-positioning centering mechanism also includes a first bevel gear; the first bevel gear is arranged at the bottom center of the self-positioning centering disc; the knob mechanism includes a second bevel gear and an adjustment knob; the second bevel gear is meshed with the first bevel gear, and one end of the adjustment knob is connected to the second bevel gear for driving the second bevel gear to rotate.

8. A welding ball grid positioning device for a large-span steel structure building according to claim 6, characterized in that: The self-positioning and centering disc is further provided with a plurality of limiting holes; the fixed disc is provided with a limiting screw, and the limiting screw cooperates with any of the limiting holes.

9. A welding ball grid positioning device for a large-span steel structure building according to claim 2, characterized in that: The height adjustment mechanism includes a pad, an adjustment handle, a screw, a threaded sleeve and a base; the threaded sleeve is fixed on the base, and the base is connected to the bottom support mechanism; the screw is threadedly engaged with the threaded sleeve, the upper end of the screw is fixedly connected to the pad, and the pad is connected to the fixed disc; the adjustment handle is connected to the pad.

10. A welding ball grid positioning device for a large-span steel structure building according to claim 9, characterized in that: The bottom support mechanism includes a supporting circular tube, a rib plate and a supporting bottom plate; the top of the supporting circular tube is connected to the base, the bottom of the screw passes through the base and extends into the supporting circular tube, the bottom of the supporting circular tube is connected to the supporting bottom plate, and the rib plate connects the supporting circular tube and the supporting bottom plate.

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