Temporary fixing tool for net rack rod and hollow ball

Abstract

The utility model discloses a kind of temporary fixing tools for net rack bar and hollow ball, comprising: limiting piece, fixed part, hoop and multiple screw rods, limiting piece is funnel-shaped, limiting piece is used to contain hollow ball, limiting piece is divided into two symmetrical half-shells by the plane formed along axis and any generatrix;Fixed part is detachably arranged in limiting piece, and fixed part can make two half-shells spliced into limiting piece;The hoop includes two half hoops, and the hoop is used to be arranged in the net rack bar, and is fixedly connected with the net rack bar by bolt and nut;One end of the screw rod is connected with the limiting piece, and the other end is connected with the hoop, to fix and connect the hoop and the limiting piece and tighten.It can solve the problem that net rack bar and hollow ball are easy to produce relative deviation or disengage when welding.

Description

Technical Field

[0001] This utility model relates to the field of space frame welding technology, specifically to a temporary fixing tool for space frame members and hollow spheres. Background Technology

[0002] Steel space frame structures offer advantages such as adaptability to large spans, light structural weight, full utilization of high-strength materials, material conservation, high degree of prefabrication, fast construction speed, and environmental friendliness, making them widely used in large-span spatial structures. There are many types of existing space frame nodes, with exposed space frame structures often using aesthetically pleasing bolted ball nodes and welded hollow ball nodes. These two types of nodes are currently the most widely used in domestic spatial structures. However, bolted ball nodes involve complex component fabrication, are expensive, and are prone to bolt over-tightening or under-tightening. Furthermore, bolted ball nodes have relatively weak bending stiffness and torsional resistance.

[0003] Welding hollow sphere nodes on-site is quite difficult, and some require high-altitude welding, which is very dangerous. Welding requires not only controlling the welding equipment, but also aligning, abutting, and stabilizing the weld joint between the space frame member to be welded and the hollow sphere before welding. This operation is difficult to perform in the air, and problems such as the space frame member and the hollow sphere shifting or the abutting joint separating can easily occur, resulting in unsuccessful welding or unsatisfactory welding results.

[0004] Therefore, this application is hereby submitted. Summary of the Invention

[0005] The purpose of this utility model is to provide a temporary fixing tool for space frame members and hollow spheres, which solves the problem that space frame members and hollow spheres are prone to relative misalignment or separation at the joint during welding.

[0006] This invention is achieved through the following technical solution: A temporary fixing tool for space frame members and hollow spheres includes: a limiting member, the limiting member being funnel-shaped and used to hold the hollow spheres, the limiting member being divided into two symmetrical half-covers by a plane formed along the axis and any generatrix; a fixing member, the fixing member being detachably disposed on the limiting member, the fixing member enabling the two half-covers to be spliced ​​together to form the limiting member; a clamp, the clamp including two half-clamps, the clamp being used to clamp onto the space frame members and fixedly connected to the space frame members by bolts and nuts; and multiple screws, one end of each screw being connected to the limiting member and the other end being connected to the clamp, to fix and tighten the clamp to the limiting member.

[0007] In another preferred embodiment, the large-diameter end of the limiting member extends radially outward to form an annular retaining edge; the fixing member is annular and coaxially fitted outside the limiting member, with the inner wall of the fixing member matching the outer wall of the large-diameter end of the limiting member; the screw is connected to the fixing member, and when the screw is tightened, the limiting member abuts against and presses against the retaining edge, so that the screw is indirectly connected to the limiting member.

[0008] In another preferred embodiment, the outer ring of the fastener extends axially along the screw to form a connecting cylinder, and the retaining edge is located inside the connecting cylinder; the connecting cylinder is coaxially and detachably connected to a pressure ring, and when the pressure ring is connected to the connecting cylinder, the retaining edge is squeezed and clamped between the pressure ring and the fastener; the screw is connected to the pressure ring so that the screw is connected to the fastener through the connecting cylinder.

[0009] In another preferred embodiment, the inner wall of the connecting cylinder has an internal thread, and the outer wall of the pressure ring has a matching external thread. The pressure ring is detachably connected to the connecting cylinder via the thread.

[0010] In another preferred embodiment, the inner diameter of the pressure ring is much larger than the diameter of the space frame member; the screw is arranged parallel to the axis of the pressure ring; an expansion ring is connected to the end of the screw away from the pressure ring, the expansion ring is coaxially sleeved on the outside of the clamp, and its inner wall is connected to the clamp through multiple telescopic rods.

[0011] In another preferred embodiment, the number of screws is four, and the four screws are evenly spaced apart on the expansion ring.

[0012] In another preferred embodiment, one end of the screw is fixedly connected to the pressure ring, and the other end passes perpendicularly through the expansion ring and is screwed with a nut.

[0013] In another preferred embodiment, the distance between two adjacent screws is greater than the maximum inner diameter of the limiting member.

[0014] In another preferred embodiment, the distance between the screw and the sidewall of the space frame member is greater than the maximum radius of the limiting member.

[0015] In another preferred embodiment, the clamp extends along the axial direction of the screw to a predetermined length, the predetermined length being greater than the diameter of the space frame member.

[0016] Because this utility model adopts the above-mentioned technical solution, it has the following positive effects compared with the prior art: This utility model discloses a temporary fixing tool for space frame members and hollow spheres. It features a limiting member shaped like a funnel, with its inner diameter gradually decreasing axially to accommodate hollow spheres of different outer diameters. The limiting member comprises two symmetrical semi-enclosed sections, allowing it to easily cover the hollow sphere to be welded and preventing obstruction by the already welded space frame member on the other side. A fixing member is provided to join the two semi-enclosed sections together, thus providing a fixing function. A clamp is used to engage and fix the clamp to the space frame member to be welded. Multiple screws are also included to further secure the clamp. The clamp is used to connect the clamp and the limiting component. By rotating the screw, the distance between the clamp and the limiting component is reduced until the space frame member to be welded and the hollow sphere smoothly come into contact, thus completing the temporary fixation of the two. The tool also provides space at the contact point to facilitate subsequent welding. After welding, the clamp and the fixing component can be removed, and the entire tool can be taken off. Through the cooperation of the above features, this temporary fixing tool for space frame members and hollow spheres can effectively solve the problem of relative displacement or separation at the contact point when welding space frame members and hollow spheres. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings: Figure 1 This is a front view schematic diagram of a temporary fixing tool for space frame members and hollow spheres according to the present invention. Figure 2 This is a front sectional view of a temporary fixing tool for space frame members and hollow spheres according to the present invention. Figure 3 This is a side view of the fixing part of a temporary fixing tool for space frame members and hollow spheres according to the present invention; Figure 4 This is a side view of the clamp of a temporary fixing tool for space frame members and hollow spheres according to the present invention.

[0018] The attached diagram shows the markings and corresponding component names: 10-Limiting component; 11-Half cover; 12-Clamping edge; 20-Fixing component; 21-Connecting cylinder; 22-Pressure ring; 30-Clamping clamp; 31-Half clamp; 40-Screw; 41-Expansion ring; 42-Nut; 43-Telescopic rod. Detailed Implementation

[0019] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front", "back", "horizontal", and "vertical" are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0021] It should be noted that the terms "horizontal" and "vertical" in this utility model are used to describe approximate positional relationships, and not strictly "horizontal plane" or "vertical plane".

[0022] like Figures 1 to 4 As shown, this embodiment provides a temporary fixing tool for space frame members and hollow spheres, including: a limiting member 10, which is funnel-shaped and used to hold the hollow spheres; the limiting member 10 is divided into two symmetrical half-covers 11 by a plane formed along the axis and any generatrix; a second including a fixing member 20, which is detachably provided on the limiting member 10 and allows the two half-covers 11 to be spliced ​​together to form the limiting member 10; a third including a clamp 30, which includes two half-hoops 31, which is used to hold the space frame members and is fixedly connected to the space frame members by bolts and nuts; and a fourth including multiple screws 40, one end of which is connected to the limiting member 10 and the other end is connected to the clamp 30 to fix and tighten the clamp 30 to the limiting member 10.

[0023] This utility model discloses a temporary fixing tool for space frame members and hollow spheres. It features a limiting member 10, shaped like a funnel with its inner diameter gradually decreasing axially to accommodate hollow spheres of different outer diameters. The limiting member 10 includes two symmetrical half-covers 11, allowing it to easily cover the hollow sphere to be welded and preventing obstruction by the already welded space frame member on the other side. A fixing member 20 is used to join the two half-covers 11 together to form the limiting member 10, thus providing a fixing function. A clamp 30 is used to clamp and fix the clamp to the space frame member to be welded. Multiple screws 40 are also included. By connecting the clamp 30 to the limiting member 10, and by rotating the screw 40, the distance between the clamp 30 and the limiting member 10 is reduced until the space frame member to be welded and the hollow sphere smoothly come into contact, thus completing the temporary fixation of the two. The tool also provides space at the contact point to facilitate subsequent welding. After welding, the clamp 30 and the fixing member 20 can be disassembled to remove the entire tool. Through the cooperation of the above features, this temporary fixing tool for space frame members and hollow spheres can effectively solve the problem of relative displacement or separation at the contact point when welding space frame members and hollow spheres.

[0024] To provide a specific explanation of the fixing structure of the fastener 20, the large-diameter end of the limiting member 10 extends radially outward to form an annular retaining edge 12; the fastener 20 is annular and coaxially fitted onto the outside of the limiting member 10, with the inner wall of the fastener 20 matching the outer wall of the large-diameter end of the limiting member 10; the screw 40 is connected to the fastener 20, and when the screw 40 is tightened, the limiting member 10 abuts against and presses against the retaining edge 12, thereby indirectly connecting the screw 40 and the limiting member 10.

[0025] With the above settings, the fixing member 20 is used to tighten the limiting member 10 to limit it radially, and the fixing member 20 is tightened by the screw 40, which indirectly uses the fixing member 20 to press the retaining edge 12, thereby limiting the half cover 11 axially and preventing the two half covers 11 from separating significantly.

[0026] To further secure the limiting member 10 and prevent the half-cover 11 from separating, the outer ring of the fixing member 20 extends along the axial direction of the screw 40 to form a connecting cylinder 21, and the retaining edge 12 is located inside the connecting cylinder 21; the connecting cylinder 21 is coaxially and detachably connected to a pressure ring 22, and when the pressure ring 22 is connected to the connecting cylinder 21, the retaining edge 12 is squeezed and clamped between the pressure ring 22 and the fixing member 20; the screw 40 is connected to the pressure ring 22 so that the screw 40 is connected to the fixing member 20 through the connecting cylinder 21.

[0027] With the above setup, the clamping edge 12 is clamped by the pressure ring 22 and the fastener 20, thereby completely restricting the position of the clamping edge 12, and thus restricting the position of the half cover 11 by the clamping edge 12.

[0028] To further explain the detachable connection between the connecting cylinder 21 and the pressure ring 22, the inner wall of the connecting cylinder 21 has an internal thread, and the outer wall of the pressure ring 22 has a matching external thread. The pressure ring 22 is detachably connected to the connecting cylinder 21 via the thread.

[0029] To allow sufficient welding space, the inner diameter of the pressure ring 22 is much larger than the diameter of the space frame member; the screw 40 is arranged parallel to the axis of the pressure ring 22; an expansion ring 41 is connected to the end of the screw 40 away from the pressure ring 22, the expansion ring 41 is coaxially sleeved on the outside of the clamp 30, and its inner wall is connected to the clamp 30 through multiple telescopic rods 43.

[0030] To further improve the welding space, there are four screws 40, which are evenly spaced apart on the expansion ring 41.

[0031] In order to make the axial distance between the expansion ring 41 and the limiting member 10 adjustable so that the rod gradually approaches the hollow ball, one end of the screw 40 is fixedly connected to the pressure ring 22, and the other end is perpendicularly inserted through the expansion ring 41 and screwed with a nut 42.

[0032] To further allow for welding space, the distance between two adjacent screws 40 is greater than the maximum inner diameter of the limiting member 10.

[0033] To further allow for welding space, the distance between the screw 40 and the side wall of the space frame member is greater than the maximum radius of the limiting member 10.

[0034] To ensure that the rod held by the clamp 30 extends in a direction parallel to the screw 40, the clamp 30 extends along the axial direction of the screw 40 to a preset length, the preset length being greater than the diameter of the space frame rod.

[0035] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A temporary fixing tool for space frame members and hollow spheres, characterized in that, include: The limiting member (10) is funnel-shaped and is used to hold a hollow sphere. The limiting member (10) is divided into two symmetrical half-covers (11) by a plane formed along the axis and any generatrix. The fastener (20) is detachably provided on the limiting member (10), and the fastener (20) enables the two half-covers (11) to be spliced ​​together to form the limiting member (10). The clamp (30) includes two half clamps (31). The clamp (30) is used to clamp onto the space frame members and is fixedly connected to the space frame members by bolts and nuts. Multiple screws (40) are provided, one end of which is connected to the limiting member (10) and the other end is connected to the clamp (30) to fix and tighten the clamp (30) to the limiting member (10).

2. The temporary fixing tool for space frame members and hollow spheres according to claim 1, characterized in that, The large-diameter end of the limiting member (10) extends radially outward to form an annular retaining edge (12). The fixing member (20) is ring-shaped and is coaxially fitted outside the limiting member (10). The inner wall of the fixing member (20) matches the outer wall of the large diameter end of the limiting member (10). The screw (40) is connected to the fixing member (20). When the screw (40) is tightened, the limiting member (10) abuts against and presses against the retaining edge (12) so that the screw (40) is indirectly connected to the limiting member (10).

3. The temporary fixing tool for space frame members and hollow spheres according to claim 2, characterized in that, The outer ring of the fastener (20) extends along the axial direction of the screw (40) to form a connecting cylinder (21), and the retaining edge (12) is located inside the connecting cylinder (21); The connecting cylinder (21) is detachably connected to a pressure ring (22) on the same axis. When the pressure ring (22) is connected to the connecting cylinder (21), the retaining edge (12) is squeezed and clamped between the pressure ring (22) and the fixing member (20). The screw (40) is connected to the pressure ring (22) so that the screw (40) is connected to the fastener (20) through the connecting cylinder (21).

4. The temporary fixing tool for space frame members and hollow spheres according to claim 3, characterized in that, The inner wall of the connecting cylinder (21) has an internal thread, and the outer wall of the pressure ring (22) has a matching external thread. The pressure ring (22) is detachably connected to the connecting cylinder (21) by means of the thread.

5. The temporary fixing tool for space frame members and hollow spheres according to claim 4, characterized in that, The inner diameter of the pressure ring (22) is much larger than the diameter of the space frame member; The screw (40) is arranged parallel to the axis of the pressure ring (22); The screw (40) is connected to an expansion ring (41) at the end away from the pressure ring (22). The expansion ring (41) is coaxially sleeved on the outside of the clamp (30), and its inner wall is connected to the clamp (30) through multiple telescopic rods (43).

6. The temporary fixing tool for space frame members and hollow spheres according to claim 5, characterized in that, The number of screws (40) is four, and the four screws (40) are evenly spaced on the expansion ring (41).

7. The temporary fixing tool for space frame members and hollow spheres according to claim 6, characterized in that, One end of the screw (40) is fixedly connected to the pressure ring (22), and the other end is perpendicularly inserted through the expansion ring (41) and screwed with a nut (42).

8. The temporary fixing tool for space frame members and hollow spheres according to claim 7, characterized in that, The distance between two adjacent screws (40) is greater than the maximum inner diameter of the limiting member (10).

9. The temporary fixing tool for space frame members and hollow spheres according to claim 8, characterized in that, The distance between the screw (40) and the side wall of the space frame member is greater than the maximum radius of the limiting member (10).

10. The temporary fixing tool for space frame members and hollow spheres according to claim 9, characterized in that, The clamp (30) extends along the axial direction of the screw (40) to a preset length, the preset length being greater than the diameter of the space frame member.

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