Steel structure truss chord member butt joint fixing device

Abstract

The utility model discloses a steel structure truss chord member butt joint fixing device which comprises a front chord member and a rear chord member, the front chord member and the rear chord member are both sleeved with locking sleeves, threads are formed in one side of each locking sleeve, a plurality of notches are formed in the end, provided with the threads, of each locking sleeve, and the locking sleeves are sleeved with locking sleeves. The outer sides of the threads are in threaded connection with nuts, the locking sleeves are externally and fixedly connected with four lug plates, a liner tube is arranged in the front chord member, the rear chord member is arranged at the other end of the liner tube in a sleeving mode, and the lug plates arranged on the two locking sleeves are fixedly connected through a connecting lug plate. According to the utility model, the locking sleeves are locked on the front chord member and the locking sleeves through the nuts, and the lug plates on the two locking sleeves are fixedly connected through the connecting lug plates, so that the axis of the front chord member and the axis of the rear chord member are overlapped, the dislocation of a welding machine caused by displacement is avoided, and the accuracy and the stability of the steel structure truss chord members in the butt joint process are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of steel structure butt jointing, in particular to a steel structure truss chord butt jointing fixing device. Background Art

[0002] In the field of construction engineering structures, during the construction of large-span steel structure trusses, each steel structure component is processed and manufactured in the factory and then transported to the site. After passing the on-site acceptance inspection, the rods are hoisted onto the frame for ground assembly to form a truss unit, and then high-altitude assembly is carried out after the ground assembly of the truss unit is completed.

[0003] When butt welding is used for steel structure rods, displacement of the rods during splicing often leads to difficulties in operation, misalignment, and poor welding quality. Utility Model Content

[0004] The utility model aims to provide a steel structure truss chord butt fixing device to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a steel structure truss chord docking and fixing device, comprising: a front chord and a rear chord, the front chord and the rear chord are both sleeved with a locking sleeve, a thread is provided on one side of the locking sleeve, a plurality of notches are provided on the threaded end of the locking sleeve, a nut is threadedly connected to the outer side of the thread, the inner diameter of the nut is slightly smaller than the outer diameter of the locking sleeve, four ear plates are fixedly connected to the outside of the locking sleeve, a liner is provided in the front chord, the rear chord is sleeved on the other end of the liner, and the ear plates provided on the two locking sleeves are fixedly connected by connecting the ear plates.

[0006] Furthermore, the locking sleeve sleeved on the front chord rod and the locking sleeve sleeved on the rear chord rod are in a symmetrical relationship.

[0007] Furthermore, the four ear plates are arranged in a cross shape along the end surface of the locking sleeve.

[0008] Furthermore, the outer diameter of the liner is slightly smaller than the inner diameters of the front chord and the rear chord.

[0009] Furthermore, the length of the connecting ear plate is the length of the ear plates on the two locking sleeves plus the length of the spacing between the two ear plates.

[0010] Furthermore, screw holes are provided on the ear plate and the connecting ear plate, and the ear plate and the connecting ear plate are connected by screws.

[0011] In the above technical solution, the utility model provides a steel structure truss chord butt fixing device with the beneficial effects of:

[0012] The utility model locks the locking sleeve on the front chord rod and the locking sleeve by means of a nut, so that the ear plate fixedly connected on the locking sleeve is integrated with the front chord rod or the rear chord rod, and the ear plates on the two locking sleeves are fixedly connected by connecting the ear plates, so that the axis overlap of the front chord rod and the rear chord rod is achieved, and the misalignment of the welding machine caused by displacement is avoided, thereby ensuring the accuracy and stability of the steel structure truss chord rod during the docking process, thereby improving the safety and reliability of the entire steel structure.

[0013] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0014] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0016] Figure 1 A schematic diagram of the structure provided for an embodiment of the utility model;

[0017] Figure 2 A plan view provided for an embodiment of the utility model.

[0018] Description of reference numerals:

[0019] 1. Front chord rod; 2. Rear chord rod; 3. Locking sleeve; 31. Ear plate; 32. Thread; 33. Notch; 4. Connecting ear plate; 5. Liner; 6. Nut. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0021] Please refer to 1-2, a steel structure truss chord docking and fixing device includes: a front chord 1 and a rear chord 2, the front chord 1 and the rear chord 2 are both sleeved with a locking sleeve 3, a thread 32 is provided on one side of the locking sleeve 3, and a plurality of notches 33 are provided on the end of the locking sleeve 3 with the thread 32, a nut 6 is threadedly connected to the outer side of the thread 32, the inner diameter of the nut 6 is slightly smaller than the outer diameter of the locking sleeve 3, four ear plates 31 are fixedly connected to the outside of the locking sleeve 3, a liner 5 is provided in the front chord 1, and the rear chord 2 is sleeved on the other end of the liner 5, and the ear plates 31 provided on the two locking sleeves 3 are fixedly connected by connecting the ear plates 4.

[0022] Specifically, the utility model locks the locking sleeve 3 on the front chord 1 and the locking sleeve 3 through the nut 6, so that the ear plate 31 fixedly connected on the locking sleeve 3 is integrated with the front chord 1 or the rear chord 2, and the ear plates 31 on the two locking sleeves 3 are fixedly connected by connecting the ear plates 4, so that the axes of the front chord 1 and the rear chord 2 overlap, avoiding the misalignment of the welding machine due to displacement, ensuring the accuracy and stability of the steel structure truss chord during the docking process, thereby improving the safety and reliability of the entire steel structure.

[0023] In this utility model, reference is made to Figure 1 and Figure 2 A liner 5 is inserted between the front chord 1 and the rear chord 2 to ensure that the axes of the front chord 1 and the rear chord 2 overlap during welding, and two locking sleeves 3 respectively locked on the front chord 1 and the rear chord 2 are connected through a connecting ear plate 4, so that the overlapping state of the axes of the front chord 1 and the rear chord 2 is fixed, which facilitates welding and avoids welding misalignment of the front chord 1 and the rear chord 2, thereby improving the accuracy and stability of the front chord 1 and the rear chord 2 during the docking process.

[0024] Furthermore, the locking sleeve 3 sleeved on the front chord bar 1 and the locking sleeve 3 sleeved on the rear chord bar 2 are in a symmetrical relationship.

[0025] Specifically, refer to Figure 1 The locking sleeve 3 is sleeved on the front chord rod 1 or the rear chord rod 2, and the locking sleeve 3 is locked on the front chord rod 1 or the rear chord rod 2 by the nut 6. The connection used in the utility model is detachable, which makes the locking sleeve 3, the connecting ear plate 4, and the nut 6 reusable, which has good economy, practicality and popularization.

[0026] Furthermore, four lugs 31 are arranged in a cross shape along the end surface of the locking sleeve 3 .

[0027] Specifically, the four ear plates 31 are arranged in a cross shape, so that the torque force generated between the front chord bar 1 and the rear chord bar 2 is equally divided to the four connecting ear plates 4, thereby reducing the deformation of the connecting ear plates 4 as much as possible and maximizing the service life of the connecting ear plates 4.

[0028] Furthermore, the outer diameter of the liner 5 is slightly smaller than the inner diameters of the front chord 1 and the rear chord 2 .

[0029] Specifically, the outer diameter of the liner 5 is slightly smaller than the inner diameter of the front chord 1 and the rear chord 2 so that the liner 5 can be inserted into the front chord 1 and the rear chord 2. At the same time, the provision of the liner 5 enhances the load capacity of the front chord 1 and the rear chord 2.

[0030] Furthermore, the length of the connecting ear plate 4 is the length of the ear plates 31 on the two locking sleeves 3 plus the length of the spacing between the two ear plates 31 .

[0031] Specifically, the length of the connecting ear plate 4 can be customized according to the usage habits of the staff, and it only needs to ensure that the connecting ear plate 4 can lock the ear plates 31 on the two locking sleeves 3 together.

[0032] Furthermore, screw holes are provided on the ear plate 31 and the connecting ear plate 4 , and the ear plate 31 and the connecting ear plate 4 are connected by screws.

[0033] Specifically, refer to Figure 1 A connecting ear plate 4 is provided on both sides of the ear plate 31, and the screw holes opened on the ear plate 31 and the screw holes opened on the connecting ear plate 4 are aligned and locked by screws.

[0034] In this utility model, reference is made to Figure 1 and Figure 2 After the locking sleeve 3 is set on the front chord bar 1, the thread 32 is held by hand and the nut 6 is screwed on the outside of the thread 32. By tightening the nut 6, the locking sleeve 3 is locked on the outside of the front chord bar 1. In the same way as the above steps, the locking sleeve 3 is locked on the rear chord bar 2. Then, one end of the liner 5 is inserted into the front chord bar 1, and then the rear chord bar 2 is sleeved on the other end of the liner 5, so that the front chord bar 1 and the rear chord bar 2 are butted together. The position of the locking sleeve 3 is adjusted so that the ear plates 31 on the two locking sleeves 3 are located on the same axis, and the two ear plates 31 are fixedly connected by connecting the ear plates 4 to achieve the fixed butt joint state of the front chord bar 1 and the rear chord bar 2. Finally, welding is performed to form a triangular weld between the front chord bar 1 and the rear chord bar 2, completing the butt joint work of the front chord bar 1 and the rear chord bar 2. Subsequently, the nut 6 is unscrewed from the thread 32, and the locking sleeve 3 is moved as a whole to the next welding point for the next round of welding.

[0035] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A steel structure truss chord butt fixing device, comprising: A front chord bar (1) and a rear chord bar (2), characterized in that: a locking sleeve (3) is sleeved on the outside of the front chord bar (1) and the rear chord bar (2), a thread (32) is provided on one side of the locking sleeve (3), a plurality of notches (33) are provided on one end of the locking sleeve (3) provided with the thread (32), a nut (6) is threadedly connected to the outside of the thread (32), the inner diameter of the nut (6) is slightly smaller than the outer diameter of the locking sleeve (3), four ear plates (31) are fixedly connected to the outside of the locking sleeve (3), a liner (5) is provided inside the front chord bar (1), the rear chord bar (2) is sleeved on the other end of the liner (5), and the ear plates (31) provided on the two locking sleeves (3) are fixedly connected via a connecting ear plate (4).

2. A steel structure truss chord butt fixing device according to claim 1, characterized in that: The locking sleeve (3) sleeved on the front chord rod (1) and the locking sleeve (3) sleeved on the rear chord rod (2) are in a symmetrical relationship.

3. A steel structure truss chord butt fixing device according to claim 1, characterized in that: The four ear plates (31) are arranged in a cross shape along the end surface of the locking sleeve (3).

4. A steel structure truss chord butt fixing device according to claim 1, characterized in that: The outer diameter of the liner (5) is slightly smaller than the inner diameters of the front chord (1) and the rear chord (2).

5. The steel structure truss chord butt-jointing fixing device according to claim 1, characterized in that: The length of the connecting ear plate (4) is the length of the ear plates (31) on the two locking sleeves (3) plus the length of the spacing between the two ear plates (31).

6. A steel structure truss chord butt fixing device according to claim 1, characterized in that: The ear plate (31) and the connecting ear plate (4) are both provided with screw holes, and the ear plate (31) and the connecting ear plate (4) are connected by screws.

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