An auxiliary device for measuring and positioning the apex of welded spheres in a steel space frame.

Abstract

This utility model discloses an auxiliary device for measuring and positioning the apex of a welded ball in a steel space frame, comprising a positioning base, a measuring prism, a prism rod, and a level. The positioning base includes a base and legs, with multiple legs evenly arranged circumferentially at the bottom of the base. The legs support the base and stably position it on the welded ball. The measuring prism is connected to the prism rod, which is movably positioned at the center of the base. The level is mounted on the base. The base has a disc-shaped structure, with an axial mounting hole along its central axis. The prism rod passes through the mounting hole and moves up and down along the base. This auxiliary device for measuring and positioning the apex of a welded ball in a steel space frame can quickly and stably position the apex of the welded ball node, improving the accuracy of the welded ball node positioning measurement.

Description

Technical Field

[0001] This utility model relates to the field of steel space frame installation and construction technology, and in particular to an auxiliary device for measuring and positioning the apex of the welded ball installation of a steel space frame. Background Technology

[0002] Steel space frames are spatial structures composed of multiple members connected at nodes in a specific grid pattern. They possess advantages such as low spatial stress, light weight, high rigidity, and good seismic performance, and are widely used as roofs for buildings such as stadiums, theaters, and exhibition halls. Most spherical nodes in steel space frames utilize welded spheres. During manufacturing and installation, the centerlines of the chord members and web members must intersect at a single point at the welded sphere to avoid eccentricity. Therefore, the accuracy of the spatial coordinate positioning of the welded sphere is crucial. During hoisting and installation, the center (center of the sphere) of the welded sphere cannot be directly observed. In on-site construction, the spatial coordinates of the welded sphere's center are typically converted into the coordinates of the sphere's vertices in the same coordinate system for positioning. However, measuring, setting out, and verifying the vertices of the welded sphere nodes is inconvenient, leading to lower installation accuracy and affecting the installation and structural safety of the steel space frame. Utility Model Content

[0003] One of the objectives of this utility model is, at least, to provide an auxiliary device for measuring and positioning the vertices of welded ball nodes in steel space frame installation, addressing the problems existing in the prior art. This device can quickly and stably position the vertices of the welded ball nodes during the installation process, thereby improving the accuracy of the positioning measurement of the welded ball nodes.

[0004] To achieve the above objectives, the technical solution adopted by this utility model includes the following aspects.

[0005] An auxiliary device for measuring and positioning the apex of a welded sphere in a steel space frame includes: a positioning base, a measuring prism, a prism rod, and a level. The positioning base includes a base and legs, with multiple legs evenly arranged circumferentially at the bottom of the base. The legs support the base and stably position it on the welded sphere. The measuring prism is connected to the prism rod, which is movably positioned at the center of the base. The level is mounted on the base. The base has a disc-shaped structure, with an axial mounting hole along its central axis. The prism rod passes through the mounting hole and moves up and down along the base.

[0006] Preferably, the mounting hole is an internally threaded hole, and the prism rod is provided with an external thread in the length direction that matches the internally threaded hole, and the prism rod is threadedly connected to the base.

[0007] Preferably, the mounting hole is a circular through hole, and a rubber sleeve is provided inside the mounting hole. The top of the rubber sleeve is provided with an annular flange. The rubber sleeve is inserted into the mounting hole, and the prism rod passes through the rubber sleeve.

[0008] Preferably, the measuring prism includes a prism and a frame. The frame has a U-shaped structure, including a base plate and two side plates. The prism is rotatably disposed between the two side plates of the frame. A connecting post perpendicular to the base plate is provided at the center of the base plate of the frame. The top of the connecting post is connected to the base plate, and the bottom of the connecting post is connected to the prism rod.

[0009] Preferably, the top center of the prism rod is provided with an axial groove that matches the connecting post, and the connecting post is inserted into the groove.

[0010] Preferably, the cross-sectional shape of the connecting column is circular or a regular polygon, the cross-sectional shape of the groove is circular or a regular polygon, and the bottom shape of the prism rod is conical.

[0011] Preferably, the level is a circular level or a bar level, and the level is detachably mounted on the top surface of the base.

[0012] Preferably, each of the legs is characterized in that a magnetic slipper is detachably provided at the bottom, and the shape of the magnetic slipper is consistent with the shape of the leg.

[0013] Preferably, the support leg has an L-shaped cross-section, and the two sides of the support leg are of equal length; the magnetic slide has an overall L-shaped cross-section, including a first slide plate and a second slide plate that are perpendicular to each other. The first slide plate has an overall triangular cross-section, and the second slide plate has an overall triangular cross-section. The surface of the first slide plate that contacts the welding ball is a slope or an arc surface, and the surface of the second slide plate that contacts the welding ball is a slope or an arc surface.

[0014] Preferably, the base has three legs evenly distributed at its bottom.

[0015] In summary, by adopting the above technical solution, this utility model has at least the following beneficial effects: By setting a positioning seat, which includes a base and multiple legs, the positioning seat can be stably placed on the welding ball, thus providing stable support for the measuring prism. Magnetic slippers are installed at the bottom of each leg, allowing them to adhere to the welding ball and further improving the stability of the positioning seat. This prevents displacement of the positioning seat during the measurement of the welding ball's installation vertex, thus ensuring the accuracy of the measurement results. A level is installed on the positioning seat, and the prism rod is installed at the center of the base, improving the adjustment efficiency of the positioning seat and quickly locating the installation vertex of the welding ball, thereby enhancing the accuracy of the measurement and positioning of the welding ball's installation vertex. The prism rod can be finely adjusted on the base, making this auxiliary device for measuring and positioning the welding ball's installation vertex suitable for measuring welding balls of different sizes, thus improving the convenience of the measurement and positioning of the welding ball's installation vertex. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an auxiliary device for measuring and positioning the apex of a welded ball in a steel space frame, which is an exemplary embodiment of this utility model.

[0017] Figure 2 This is a schematic diagram of the structure of an auxiliary device for measuring and positioning the apex of a welded ball in a steel space frame, which is another exemplary embodiment of this utility model.

[0018] Figure 3 This is a schematic diagram of the structure of the prism rod of an exemplary embodiment of the present invention.

[0019] Figure 4 This is a schematic diagram illustrating the use of an auxiliary device for measuring and positioning the apex of a welded ball in a steel space frame, as an exemplary embodiment of this utility model.

[0020] The markings in the diagram are: 1-positioning seat, 11-base, 110-mounting hole, 111-second connecting hole, 12-support leg, 13-rubber sleeve, 130-annular flange, 131-first connecting hole, 14-magnetic slide shoe, 140-slide shoe plate one, 141-slide shoe plate two, 2-measuring prism, 21-prism, 22-frame, 23-connecting column, 3-prism rod, 31-groove, 4-level, 5-welding ball. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments, so that the purpose, technical solution and advantages of the present invention will be clearer. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0022] refer to Figure 1An exemplary embodiment of this utility model provides an auxiliary device for measuring and positioning the apex of a welded ball in a steel space frame. The device includes a positioning base 1, a measuring prism 2, a prism rod 3, and a level 4. The positioning base 1 includes a base 11 and legs 12. Multiple legs 12 are evenly arranged circumferentially at the bottom of the base 11. The legs 12 support the base 11 and stabilize the base 11 on the welded ball. The measuring prism 2 is connected to the prism rod 3, which is movably positioned at the center of the base 11. The level 4 is mounted on the base 11.

[0023] During the positioning and measurement of the welded ball, the positioning seat 1 can be stably set on the welded ball, and the prism rod 3 is located at the center of the base 11, which can improve the accuracy of the positioning and measurement of the welded ball. During the adjustment of the positioning seat 1, the level 4 can be used to observe whether the positioning seat 1 is adjusted into place, which improves the convenience of adjusting the positioning seat 1 and ensures the accuracy of the measurement results. Through the gap between the base 11 and the support leg 12, it can also be observed whether the bottom of the prism rod 13 is in contact with the surface of the welded ball, which further ensures the accuracy of the measurement results.

[0024] The base 11 has a disc-shaped structure. A mounting hole 110 is axially provided at the central axis of the base 11. The prism rod 3 passes through the mounting hole 110 and can move up and down along the base 11 to finely adjust the position of the prism rod 3 so that the bottom of the prism rod 3 contacts the surface of the welding ball.

[0025] Mounting hole 110 is an internal threaded hole. The prism rod 3 has an external thread that matches the internal threaded hole along its length. The prism rod 3 is threadedly connected to the base 11. Rotating the prism rod 3 can adjust its position so that the bottom of the prism rod 3 contacts the surface of the welding ball.

[0026] Mounting hole 110 is a circular through hole, and a rubber sleeve 13 is provided inside mounting hole 110 (reference). Figure 2The top of the rubber sleeve 13 is provided with an annular flange 130, and the annular flange 130 is provided with a plurality of first connecting holes 131 circumferentially. Correspondingly, the base 11 is provided with a plurality of second connecting holes 111 circumferentially along the mounting hole 110. The positions of the second connecting holes 111 are corresponding to the positions of the first connecting holes 131. The base 11 and the annular flange 130 are detachably connected by screws (after the rubber sleeve is installed, the bottom surface of the annular flange is in contact with the top surface of the base). The outer diameter of the rubber sleeve 13 is slightly larger than the diameter of the mounting hole 110 (for example, the outer diameter of the rubber sleeve 13 is 1-2 mm larger than the diameter of the mounting hole 110), so that the rubber sleeve 13 can be stably inserted into the mounting hole 110; the outer diameter of the rubber sleeve 13 can also be equal to the diameter of the mounting hole 110, and the rubber sleeve 13 is preferably connected to the base 11 by screws; the diameter of the prism rod 3 is slightly larger than the inner diameter of the rubber sleeve 13 (for example, the diameter of the prism rod 3 is 1-2 mm larger than the inner diameter of the rubber sleeve 13). Under the elastic action of the rubber sleeve 13, after the prism rod 3 passes through the rubber sleeve 13, the position of the prism rod 3 on the base 11 can be adjusted, and the stability of the prism rod 3 on the base 11 can also be maintained.

[0027] The measuring prism 2 includes a prism 21 and a frame 22. The frame 22 has a U-shaped structure, including a base plate and two side plates. The prism 21 is rotatably mounted between the two side plates of the frame 22. A connecting post 23 perpendicular to the base plate is provided at the center of the base plate of the frame 22. The top of the connecting post 23 is fixedly connected to the base plate (welded or integrally formed) or detachably connected. A groove 31 is axially provided at the center of the top of the prism rod 3 (see reference). Figure 3 The shape and size of the groove 31 are adapted to the shape and size of the connecting post 23. When the connecting post 23 is inserted into the groove 31, the position of the mirror frame 22 relative to the prism rod 3 can be adjusted, improving the convenience of welding ball positioning measurement. Furthermore, the cross-sectional shape of the connecting post 23 is circular or regular polygonal. When the cross-sectional shape of the connecting post 23 is circular, an external thread can also be provided on the surface of the connecting post 23. The cross-sectional shape of the groove 31 is circular or regular polygonal. When the cross-sectional shape of the groove 31 is circular, an internal thread adapted to the connecting post 23 can also be provided on the inner wall of the groove 31. The angle of the prism 21 can be adjusted by rotating the connecting post 23.

[0028] The bottom of the prism rod 3 is conical. The contact between the tip of the cone and the surface of the welding ball can reduce the contact area between the prism rod 3 and the welding ball, so that the central axis of the prism rod 3 passes through the center of the welding ball, thereby improving the accuracy of the positioning measurement of the welding ball.

[0029] The level 4 is a circular level (or a bar level). The level 4 can be detachably mounted on the top surface of the base 11 by screws or magnetically attached to the top surface of the base 11. When the bubble in the level 4 is at the exact center of the level 4, the prism rod 3 is directly above the welding ball.

[0030] The base 11 preferably has three legs 12 evenly distributed at its bottom to improve the overall stability of the positioning seat 1 on the welding ball. The top of each leg 12 is fixedly or detachably connected to the base 11, and the angle between each leg 12 and the horizontal plane is 45 to 70 degrees (the specific angle varies depending on the size of the welding ball). The inclined arrangement of the legs 12 can further improve the stability of the positioning seat 1 on the welding ball. When positioning and measuring welding balls of different sizes, using legs 12 with different inclination angles can improve the stability of the positioning seat 1 on different welding balls and expand the application range of the positioning seat 1. The cross-sectional shape of the legs 12 can be circular, rectangular, or L-shaped. When the cross-sectional shape of the legs 12 is L-shaped, the lengths of the two sides of the legs 12 are equal.

[0031] Each support leg 12 is also detachably equipped with a magnetic slipper 14 at its bottom. The magnetic slipper 14 can be adsorbed onto the surface of the welding ball, further improving the stability of the positioning seat 1 on the welding ball. When the magnetic slipper 14 is connected to the support leg 12, it can be directly adsorbed onto the bottom of the support leg 12, or it can be connected to the support leg 12 with screws. The shape and size of the magnetic slipper 14 are consistent with the shape and size of the support leg 12. The magnetic slipper 14 preferably contacts the surface of the welding ball to further improve the stability of the positioning seat 1 on the welding ball. When the support leg 12 is L-shaped, the overall cross-sectional shape of the magnetic slide shoe 14 is L-shaped, including mutually perpendicular slide shoe plate 140 and slide shoe plate 141. Slide shoe plate 140 and slide shoe plate 141 have the same shape. The overall cross-sectional shape of slide shoe plate 140 and slide shoe plate 141 is triangular. The surface of slide shoe plate 140 that contacts the welding ball is a slope or arc surface, and the surface of slide shoe plate 141 that contacts the welding ball is a slope or arc surface, so that both slide shoe plate 140 and slide shoe plate 141 are in contact with the welding ball surface, further increasing the contact area between the magnetic slide shoe 14 and the welding ball, and improving the stability of the positioning seat 1 on the welding ball. When the support leg 12 is cylindrical, the overall shape of the magnetic slide shoe 14 is cylindrical. The difference is that the surface of the magnetic slide shoe 14 that contacts the welding ball is a slope or arc surface, in order to improve the stability of the positioning seat 1 on the welding ball.

[0032] refer to Figure 4The method of using the auxiliary device for measuring and positioning the vertex of the welded ball installation of the steel space frame is as follows: After assembling the auxiliary device for measuring and positioning the vertex of the welded ball installation of the steel space frame, place the positioning seat 1 on the welded ball 5, and use the magnetic slipper 14 to stably attach the positioning seat 1 to the welded ball 5; finely adjust the positioning seat 1 and observe whether the bubble in the level 4 is in the exact center of the level 4. When the bubble in the level 4 is in the exact center of the level 4, the positioning seat 1 is adjusted into position; adjust the prism rod 3 so that the tip of the prism rod 3 contacts the surface of the welded ball 5. The contact point between the prism rod 3 and the welded ball 5 is the vertex of the welded ball 5. Then, use a total station in conjunction with the measuring prism 2 to measure the three-dimensional coordinates of the installation vertex of the welded ball 5; during the measurement process, the position of the prism 21 can be adjusted by rotating the connecting column 23 to improve the convenience of total station measurement.

[0033] The above description is merely a detailed illustration of specific embodiments of this utility model, and not a limitation thereof. Various substitutions, modifications, and improvements made by those skilled in the art without departing from the principles and scope of this utility model should be included within the protection scope of this utility model.

Claims

1. An auxiliary device for measuring and positioning the installation apex of a steel space truss welded ball, characterized in that, include: Positioning seat (1), measuring prism (2), prism rod (3), and level (4); the positioning seat (1) includes a base (11) and legs (12), a plurality of legs (12) are evenly arranged circumferentially at the bottom of the base (11), the legs (12) are used to support the base (11) and make the base (11) stably positioned on the welding ball; the measuring prism (2) is connected to the prism rod (3), the prism rod (3) is movably arranged at the center position of the base (11), and the level (4) is arranged on the base (11); the base (11) is a disc-shaped structure, and an axial mounting hole (110) is provided at the central axis of the base (11), the prism rod (3) passes through the mounting hole (110) and moves up and down along the base (11).

2. The auxiliary device for measuring and positioning the apex of the steel space truss welded ball mounting according to claim 1, characterized in that, The mounting hole (110) is an internal threaded hole, and the prism rod (3) is provided with an external thread in the length direction that is compatible with the internal threaded hole. The prism rod (3) is threadedly connected to the base (11).

3. The auxiliary device for measuring and positioning the apex of the welded sphere installation in a steel space frame according to claim 1, characterized in that, The mounting hole (110) is a circular through hole. A rubber sleeve (13) is provided inside the mounting hole (110). An annular flange (130) is provided on the top of the rubber sleeve (13). The rubber sleeve (13) is inserted into the mounting hole (110), and the prism rod (3) passes through the rubber sleeve (13).

4. The auxiliary device for measuring and positioning the apex of the steel space truss welded ball mounting according to claim 1, characterized in that, The measuring prism (2) includes a prism (21) and a frame (22). The frame (22) is a U-shaped structure, including a base plate and two side plates. The prism (21) is rotatably disposed between the two side plates of the frame (22). A connecting column (23) perpendicular to the base plate is provided at the center of the base plate of the frame (22). The top of the connecting column (23) is connected to the base plate, and the bottom of the connecting column (23) is connected to the prism rod (3).

5. The auxiliary device for measuring and positioning the apex of the steel space truss welded ball mounting according to claim 4, characterized in that, The top center of the prism rod (3) is provided with a groove (31) that is adapted to the connecting post (23), and the connecting post (23) is inserted into the groove (31).

6. The auxiliary device for measuring and positioning the apex of the steel space truss welded ball mounting according to claim 5, characterized in that, The cross-sectional shape of the connecting column (23) is circular or regular polygonal, the cross-sectional shape of the groove (31) is circular or regular polygonal, and the bottom shape of the prism rod (3) is conical.

7. The auxiliary device for measuring and positioning the apex of the welded sphere installation in a steel space frame according to claim 1, characterized in that, The level (4) is a circular level or a bar level, and the level (4) is detachably mounted on the top surface of the base (11).

8. The auxiliary device for measuring and positioning the apex of the steel space truss welded ball mounting according to any one of claims 1 to 7, characterized in that, Each of the legs (12) is detachably provided with a magnetic slipper (14) at its bottom, the shape of which is consistent with the shape of the leg (12).

9. The auxiliary device for measuring and positioning the apex of the steel space truss welding ball according to claim 8, characterized in that, The support leg (12) has an L-shaped cross-section and the two sides of the support leg (12) are of equal length. The magnetic slide (14) has an L-shaped cross-section and includes a first slide plate (140) and a second slide plate (141) that are perpendicular to each other. The first slide plate (140) has a triangular cross-section and the second slide plate (141) has a triangular cross-section. The surface of the first slide plate (140) that contacts the welding ball is a slope or an arc surface, and the surface of the second slide plate (141) that contacts the welding ball is a slope or an arc surface.

10. The auxiliary device for measuring and positioning the apex of the steel space truss welded ball mounting according to claim 8, characterized in that, The bottom of the base (11) is uniformly provided with three legs (12).

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