Multi-directional Space Node Assembly and Positioning Device and Method

Abstract

The present invention relates to a multi-directional space node assembly positioning device and an operation method that can not only accurately and quickly assemble multi-directional space node plates, but also ensure the assembly accuracy of space nodes and reduce labor costs. The top side positioning device is abutted between the isosceles sides of an isosceles hexagon and is located on the substrate through a support plate. The side positioning devices on both sides are respectively opposite and located on both side parts of the substrate surface through support plates. The horizontal positioning device platform is located on the substrate in the space formed by the top side positioning device and the side positioning devices on both sides. There are a plurality of positioning sleeves on the surface of the horizontal positioning device platform. Advantages: First, the accuracy meets the design requirements, and at the same time, the manufacturing accuracy of the workpieces in the previous process can be detected, reducing the error accumulation to the lowest level; second, the work efficiency is greatly improved, and the scribing process is cancelled, saving labor costs; third, the problem of batch assembly of space node plates with relatively fixed spatial connection relationships is solved.

Description

Technical Field

[0001] The present invention relates to a device that can not only ensure the assembly accuracy of spatial nodes, improve work efficiency and ensure safety, but also solve existing problems such as low efficiency of manual scribing and poor assembly accuracy of spatial nodes, and at the same time can meet the requirements of precise and rapid assembly, namely, a multi-directional spatial node assembly positioning device and method. Background Art

[0002] In the field of steel beam steel structure manufacturing, bolt-welded structures generally use spatial multi-directional nodes (referred to as spatial nodes for short) to connect members in all directions. Among them, three-way vertical nodes are the most widely used. For example, Figure 5 , punching holes on-site (generally drilling plane hole groups) not only has low efficiency but also increases the difficulty of on-site management. It is necessary to first install and position, punch holes, then disassemble, drill, and finally install in place. Repeated hoisting and disassembly not only have a large high-altitude operation intensity and high labor costs, but also increase safety hazards. When using traditional scribing and assembly, it is necessary to first scribe the assembly position lines of two elevations, then find the connection relationship position lines on the horizontal panel, and then align and assemble the lines. This is not only time-consuming and laborious, but also greatly affected by the accuracy of scribing and line alignment, resulting in error accumulation and ultimately affecting the installation accuracy. Summary of the Invention

[0003] Design purpose: To avoid the deficiencies in the background art, design a multi-directional spatial node assembly positioning device and operation method that can not only accurately and quickly assemble multi-directional spatial node plates, but also ensure the assembly accuracy of spatial nodes and reduce labor costs.

[0004] Design scheme: In order to achieve the above design purpose. In terms of structural design, the present invention designs positioning abutment outer tires in all directions, analyzes and summarizes the connection relationship of spatial hole groups by using the hole groups on the spatial nodes, and sets corresponding positioning holes on the device. The user only needs to drill holes in the node plates in all directions of the spatial node by the pre-drilling method and then hoist them to the tire type of the device in sequence. After preliminary positioning, according to the designated positioning points of various spatial nodes indicated on the device, drive shoulder positioning punch pins to achieve precise positioning of parts in all directions, and then spot-weld and fix them to complete the assembly of parts at various angles in space into spatial nodes. The parts can be numerically controlled drilled by the pre-drilling method, and both the accuracy and progress can be fully guaranteed. After assembling with this device, the spatial relationship of each part can also be accurately guaranteed. For this reason, the present invention needs to meet the following requirements: First, the device structure has a certain rigidity, stability and durability, and will not deform under manual hammering; second, the spatial relationship of the positioning devices in all directions is accurate and convenient for positioning; third, the positioning punch pins are closely matched, so that the device can be closely attached to the assembled spatial node and is convenient for disassembly and hoisting after completion of the operation.

[0005] Technical solution 1: A multi-directional spatial node assembly and positioning device. The top side positioning device abuts against the isosceles part of an isosceles hexagon and is located on the substrate through a support plate. The two side side positioning devices abut against each other relatively and are located on both side parts of the substrate surface through support plates. The horizontal positioning device platform is located on the substrate within the space formed by the top side positioning device abutment and the two side side positioning device abutments. There are multiple positioning sleeves on the surface of the horizontal positioning device platform.

[0006] Technical solution 2: A manufacturing method of a multi-directional spatial node assembly and positioning device. 1) The steel plate used for the positioning device has a thickness of 12 - 20 mm, and the material is not limited. The positioning plate is drilled by a numerically controlled machine tool to ensure accuracy. 2) The aperture of the positioning sleeve matches the aperture and tolerance of the spatial node. A flat sleeve is used, and the inlay sleeve uses an interference fit to prevent the positioning sleeve from falling off during use. 3) The material of the positioning punch is not lower than T8, and the heat treatment hardness is HRC35 - 45. Shoulderless positioning punches are used on the vertical surface, and non-shoulder positioning punches are used on the plane. The effective use length of the punch is not less than the sum of the maximum thickness of the assembled component and the thickness of the positioning plate. 4) After the positioning device is assembled and welded, it is inspected as a whole, and the flatness and perpendicularity are strictly controlled. After passing the inspection, the inlay sleeve is installed.

[0007] Technical solution 3: An operation method of a multi-directional spatial node assembly and positioning device. 1) The hole groups of the node plates in each direction of the spatial node are drilled by a numerically controlled machine tool using the pre-drilling method. 2) Place the horizontal plate of the spatial node on the device platform. After initial alignment, drive in the positioning punches for precise positioning. 3) Place the vertical connecting plate in one direction of the spatial node on the corresponding abutment. After initial alignment, drive in the shoulder positioning punches from the inside to the outside for precise positioning. Position the connecting plates on the remaining vertical surfaces in this way successively. The number of positioning punches for each connecting surface is not less than 2. 4) After all the connecting plates are positioned, spot weld them in accordance with the assembly requirements to complete the assembly of the spatial node. 5) Remove the positioning punches and lift the workpiece out of the positioning device.

[0008] Compared with the background art of the present invention, first, the accuracy meets the design accuracy requirements (the relative position deviation of the designed accuracy hole group is 1.0 mm). At the same time, it can detect the manufacturing accuracy of the workpiece's previous process and minimize the error accumulation (according to the traditional drilling, scribing, and assembly methods, the assembly welding error of the space nodes accumulates to 1.0 - 1.2 mm; the allowable error for hole making of the rods connected to the space nodes is 1.0 mm for the extreme edge hole spacing; in the design specifications, generally M24 high-strength bolts are used for connection, with a hole diameter of 26 mm. From the above analysis, although the two parts of the rods respectively meet the production acceptance specifications, the cumulative error of their connection is close to the critical value, resulting in the nail hole passing rate not reaching 100% during space installation, that is, the requirement that the bolts can pass freely. By using this device, the error accumulation is controlled below 0.5 mm.); second, the work efficiency is greatly improved, and the scribing process is cancelled, saving labor costs (in the traditional assembly method, the scribing working hours for each part on the space node is 20 minutes, and for 3 parts, the total scribing working hours are 1 h; the assembly working hours for alignment are 0.5 h. The total working hours for one space node are 1.5 h, involving two process operations. By using this device, punch nails are driven into the specified positioning holes in each direction for positioning, and the working hours required for one space node are 0.25 h, and the efficiency is increased by 6 times.); third, it solves the problem of batch assembly of space node plates with relatively fixed spatial connection relationships. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 is a schematic structural diagram of a multi-directional space node assembly positioning device.

[0010] Figure 2 is Figure 1 the sectional view taken along line A - A in

[0011] Figure 3 is Figure 1 the sectional view taken along line B - B in

[0012] Figure 4 is Figure 1 the sectional view taken along line C - C in

[0013] Figure 5 is the three - view schematic diagram of the space node in the background art. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] Embodiment 1: Refer to the attached Figures 1-4 . A multi - directional space node assembly positioning device, the top - side positioning device stop 2 is located between the isosceles sides of the isosceles hexagon and is located on the substrate 4 through a support plate. The two side - side positioning device stops 5 are opposite to each other and are located on both side edges of the substrate 4 surface through support plates. The horizontal positioning device platform 1 is located on the substrate 4 in the space formed by the top - side positioning device stop 2 and the two side - side positioning device stops 5, and there are multiple positioning sleeves 3 on the surface of the horizontal positioning device platform 1.

[0015] The substrate 4 is isosceles hexagonal when viewed from above, that is, the upper part is a trapezoid without a bottom side, and the lower part is a rectangle without an upper side.

[0016] The top ( Figure 1 viewed as the top in appearance) side positioning device stop 2 is composed of a stop and multiple support plates. The multiple support plates stand upright and are connected to the back of the stop. And multiple rows of holes are opened on the stop surface, and positioning sleeves are inlaid in the holes. During use, the lateral connecting plate of the space node is leaned vertically against this stop, and positioning punch nails are driven through the bolt holes on it and the designated positioning holes of the positioning sleeves inlaid on the stop to achieve the purpose of precise positioning.

[0017] The lower end surface of the stop is opposite to the surface of the substrate 4 but does not touch it, showing a spacing fit, but the multiple support plates used to connect the stop are welded to the surface of the substrate 4.

[0018] The horizontal positioning device platform 1 is composed of a platform surface and four support angles. The four (rectangular) support angles support at the four corners on the back of the platform surface. The horizontal connecting plate of the space node is positioned by using the platform surface. The platform surface is drilled first according to the set position, and then the positioning sleeve is inlaid. Through the holes on the horizontal connecting plate of the space node to be assembled and the positioning sleeve on this device, positioning punch nails are driven to realize the positioning of the horizontal plate. The surface of the horizontal positioning device platform 1 is lower than the stop of the top side positioning device and the stops of the side positioning devices on both sides. The height difference depends on the height difference between the horizontal plate of the space node and the hole groups of the lateral connecting plate.

[0019] Definition of space node: In the field of large bolt-welded truss steel structure bridges, a node that connects the members in all directions in space (at least two directions in space) such as the main truss, horizontal bracing members, and cross bracing members is called a space node. In the field of building steel structures, a node that connects the members in all directions in space (at least two directions in space) such as beams, columns, and column bracings is called a space node.

[0020] Embodiment 2: On the basis of Embodiment 1, a manufacturing method of a multi-directional space node assembly positioning device. 1) The thickness of the steel plate used for the positioning device is 12 - 20 mm, and the material is not limited. The positioning plate is drilled by a numerical control machine tool to ensure accuracy. 2) The aperture of the positioning sleeve matches the aperture and tolerance of the space node, and a flat sleeve is used, with the material T10A to ensure wear resistance. The sleeve inlay uses an interference fit to prevent the positioning sleeve from falling off during use. 3) The material of the positioning punch nail is not lower than T8, and the heat treatment hardness is HRC35 - 45. Shoulder positioning punch nails are used for the vertical surface, and non-shoulder positioning punch nails are used for the plane. The effective use length of the punch nail is not less than the maximum thickness of the assembled component plus the thickness of the positioning plate. 4) After the positioning device is assembled and welded, it is inspected as a whole, and the flatness and perpendicularity are strictly controlled. After passing the inspection, the sleeve is inlaid.

[0021] Embodiment 3: Based on Embodiments 1 and 2, an operation method of a multi-directional space node assembly and positioning device. 1) The hole groups of the node plates in each direction of the space node are drilled by a numerically controlled machine tool using the pre-drilling method. 2) Place the horizontal plate of the space node on the device platform. After initial alignment, drive in positioning punch pins for precise positioning. 3) Place the vertical connecting plate in one direction of the space node on the corresponding stop. After initial alignment, drive in shoulder positioning punch pins from the inside to the outside for precise positioning. Position the connecting plates on the remaining vertical surfaces in this way. The number of positioning punch pins on each connecting surface is not less than two. 4) After all the connecting plates are positioned, spot-weld and fix them according to the assembly requirements to complete the assembly of the space node. 5) Remove the positioning punch pins and lift the workpiece out of the positioning device.

[0022] It should be understood that although the above embodiments have made detailed written descriptions of the design concept of the present invention, these written descriptions are only simple written descriptions of the design concept of the present invention, rather than limitations on the design concept of the present invention. Any combination, addition, or modification that does not exceed the design concept of the present invention falls within the protection scope of the present invention.

Claims

1. A multi-directional space node assembly and positioning device, characterized in that: The top side positioning device stop (2) is located between the isosceles sides of an isosceles hexagon and is located on the substrate (4) through a support plate. The two side side positioning device stops (5) are respectively opposite and located on both side edges of the substrate (4) surface through a support plate. The horizontal positioning device platform (1) is located on the substrate (4) within the space formed by the top side positioning device stop (2) and the two side side positioning device stops (5). There are multiple positioning sleeves (3) on the surface of the horizontal positioning device platform (1), and the surface of the horizontal positioning device platform (1) is lower than the top side positioning device stop and the two side side positioning device stops; The manufacturing method is as follows: 1) The steel plate used for the positioning device has a thickness of 12 - 20 mm, and the material is not limited. The positioning plate is drilled by a numerically controlled machine tool to ensure accuracy; 2) The aperture of the positioning sleeve matches the aperture and tolerance of the space node. A flat sleeve is used, and the inserted sleeve uses an interference fit to prevent the positioning sleeve from falling off during use; 3) The material of the positioning punch is not lower than T8, and the heat treatment hardness is HRC35 - 45. Shoulder positioning punches are used on the vertical surface, and non - shoulder positioning punches are used on the plane. The effective use length of the punch is not less than the maximum thickness of the assembled component plus the thickness of the positioning plate; 4) After the positioning device is assembled and welded, it is inspected as a whole, and the flatness and perpendicularity are strictly controlled. After passing the inspection, the sleeve is inserted.

2. The multi-directional space node assembly positioning device according to claim 1, characterized in that: The substrate (4) is in an isosceles hexagon shape when viewed from above.

3. The multi-directional space node assembly positioning device according to claim 1, characterized in that: The top side positioning device stop (2) is composed of a stop and multiple support plates, and the multiple support plates are erected and connected to the back of the stop.

4. The multi-directional space node assembly positioning device according to claim 3, characterized in that: Multiple rows of holes are opened on the surface of the stop.

5. The multi-directional space node assembly positioning device according to claim 3, characterized in that: The lower end surface of the stop is opposite to the surface of the substrate (4), but they do not touch each other, showing a spacing fit.

6. The multi-directional space node assembly positioning device according to claim 3, characterized in that: The horizontal positioning device platform (1) is composed of a platform surface and four support corners, and the four support corners support at the four corner parts on the back of the platform surface.

7. The multi-directional space node assembly positioning device according to claim 1, characterized in that: The operation method of the multi - directional space node assembly positioning device includes the following steps: 1) For each direction of the node plate parts of the space node, the hole groups are drilled by a numerically controlled machine tool using the pre - drilling method; 2) Place the horizontal plate of the space node on the device platform. After initial alignment, drive in the positioning punches for precise positioning; 3) Place the vertical connecting plate in one direction of the space node on the corresponding stop. After initial alignment, drive in the shoulder positioning punches from the inside to the outside for precise positioning; Position the remaining vertical connecting plates in this way in turn; The number of positioning punches for each connecting surface is not less than two; 4) After all the connecting plates are positioned, spot - weld and fix them according to the assembly requirements to complete the assembly of the space node; 5) Remove the positioning punches and lift the workpiece out of the positioning device.

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