A crack reinforcement device for wooden upper / lower chord members

Abstract

This utility model provides a crack reinforcement device for wooden upper / lower chords, used to reinforce the upper and lower chords of wooden roof trusses. It includes a clamp-type iron hoop and locking bolts. The clamp-type iron hoop comprises two symmetrically arranged iron hoop pieces, each including a groove and connecting portions extending from the groove to both ends. The connecting portions are provided with bolt mounting holes. The two iron hoop pieces are clamped together and secured together by locking bolts passing through the bolt mounting holes. The grooves of the clamped iron hoop pieces are joined together to enclose and reinforce the wooden components. This device is used to reinforce cracks in the upper and lower chords of wooden roof trusses; construction is efficient and convenient, and not subject to experience constraints.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically to a crack reinforcement device for wooden upper / lower chords. Background Technology

[0002] For old buildings, especially those with cultural and historical significance, there are many wooden structures, such as wooden roof trusses, wooden factory buildings, and kitchens. These structures are often reinforced to maintain their form.

[0003] With its advantages of low cost, fast cycle and low risk, reinforcement technology has become the mainstream choice for revitalizing existing assets. For the reinforcement of wood structures, it is divided into traditional reinforcement and new reinforcement methods. In general, it mainly includes technologies such as partial replacement, additional support, carbon fiber cloth, epoxy resin, and structural adhesive bonding.

[0004] These technologies currently offer mostly solutions and methods that require staff to adapt them to the specific problems on-site, using existing reinforcement methods. This process is highly dependent on the staff's experience and is not conducive to widespread application.

[0005] However, some structural problems exist, with relatively regular basic structures and relatively widespread issues. For example, the cracking problem in the upper and lower chords of a wooden roof truss can be solved by designing a targeted reinforcement device that can be widely adapted to address this common problem.

[0006] Based on this concept, there is a need to develop a specialized reinforcement device that can address cracks in wooden components, especially in the upper and lower chords of wooden roof trusses, to simplify the reinforcement process. Utility Model Content

[0007] The purpose of this invention is to address the shortcomings of existing technologies by providing a crack reinforcement device for wooden upper / lower chords in roof trusses that is efficient, convenient to construct, and not subject to experience constraints.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is: a crack reinforcement device for wooden upper / lower chords, used to reinforce the upper and lower chords of wooden roof trusses, including clamp-type iron hoops and locking bolts;

[0009] The clamp-type iron hoop includes two symmetrically arranged iron hoop pieces. Each iron hoop piece includes a groove and a connecting part extending from the groove to both ends. The connecting part is provided with bolt mounting holes. After the two iron hoop pieces are wrapped together, they are fastened together by locking bolts passing through the bolt mounting holes.

[0010] The grooves formed by the two iron hoops are joined together to enclose and reinforce the wooden components.

[0011] Preferably, the bottom of the groove is densely covered with spikes for piercing the wooden component to grip it.

[0012] Preferably, the sidewalls of the groove are also densely covered with spikes for piercing the wooden component to grip it.

[0013] Preferably, the spikes are welded and fixed to the bottom and sidewalls of the groove.

[0014] Preferably, both ends of the locking bolt are provided with threaded sections, and both ends of the threaded sections are equipped with a double nut structure.

[0015] Preferably, the threaded sections at both ends of the same locking bolt have the same thread direction.

[0016] Preferably, the threaded sections at both ends of the same locking bolt have opposite thread directions.

[0017] Preferably, the iron hoop is an integral structure, and the thickness of the iron hoop is at least 10mm.

[0018] Preferably, the groove shape is a rectangular groove, a circular groove, or a rhomboid groove.

[0019] Preferably, the bolt is an M16 bolt.

[0020] This utility model has substantial features and advancements compared to existing technologies. Specifically, this utility model designs a device for the upper and lower chord structures of wooden roof trusses, which uses two iron hoops and two sets of bolts for fastening. The two iron hoops hug the wooden structure from both sides, and then the iron hoops are locked together by locking bolts. The two iron hoops encircle and hug the wooden structure, thus tightening the gaps in the wooden structure and reinforcing the local structure. The installation process is quick and simple, requires little experience, and can be completed by ordinary workers. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a crack reinforcement device for a wooden upper / lower chord in this utility model, used to reinforce the upper chord.

[0022] Figure 2 This is a schematic diagram of a crack reinforcement device for a wooden upper / lower chord in this utility model, used to reinforce the lower chord.

[0023] Figure 3 This is a schematic diagram of the distribution of spikes in the iron hoop plate of this utility model.

[0024] In the diagram: 1. Upper chord; 2. Lower chord; 3. Iron hoop; 31. Groove; 32. Connecting part; 33. Spike; 5. Double nut structure. Detailed Implementation

[0025] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0026] like Figures 1-3 As shown, a crack reinforcement device for wooden upper / lower chords is used to reinforce the upper chord 1 and lower chord 2 of a wooden roof truss, including clamp-type iron hoops and locking bolts.

[0027] The clamp-type iron hoop includes two symmetrically arranged iron hoop plates 3. Each iron hoop plate 3 includes a groove 31 and a connecting part 32 extending from the groove 31 to both ends. The connecting part 32 is provided with bolt mounting holes. After the two iron hoop plates 3 are joined together, they are fastened together by locking bolts 4 passing through the bolt mounting holes.

[0028] The groove 31, formed by the two iron hoop plates 3 embracing each other, is used to enclose and reinforce the wooden components.

[0029] Specifically, in this embodiment, the iron hoop 3 is an integral structure, and the thickness of the iron hoop 3 is at least 10mm.

[0030] For the upper chord 1, use 360mm*150mm*10mm iron hoop plates and M16 bolts. First, wrap the upper chord wooden beam with the two iron hoops. Then, use two 90mm high ear plates that extend from the top and bottom to fasten them with one M16 bolt at the top and one at the bottom. The bolt positions are 50mm outside the iron hoops, and ensure that the spacing between the iron hoops is no more than 300mm to achieve the reinforcement effect.

[0031] For the lower chord 2, a 330mm*150mm*10mm iron hoop 3 is used to fasten it with two M16 bolts. The operation process is the same as that for the upper chord.

[0032] To further enhance the reinforcement effect, the bottom of the groove 31 is densely covered with spikes 33, which are used to pierce the wooden components to grip them firmly.

[0033] In other embodiments, if there is space in the width direction of the groove, the sidewalls of the groove are also densely covered with spikes (not shown in the figure) for piercing the wooden component to grip it.

[0034] The spikes 33 are welded and fixed to the bottom of the groove 31. After enclosing the wooden structure, the spikes 33 will penetrate into the wooden structure, forming numerous gripping positions in a localized area to prevent the wooden structure from shaking within a limited range. This avoids the problem that the wooden structure is still prone to swaying due to a certain assembly gap between the iron hoop 3 and the wooden structure.

[0035] In terms of fastening design, both ends of the locking bolt 4 are equipped with threaded sections, and both ends of the threaded sections are equipped with double nut structures 5. The threaded sections at both ends of the same locking bolt can have the same or opposite thread direction.

[0036] In this embodiment, for the general structure of the upper and lower chords, the groove shape of the groove is a rectangular groove. In some special cases, it can also be adapted to be a circular groove or a rhomboid groove.

[0037] By installing this crack reinforcement device, construction is not only simple, fast and efficient, but also requires only basic tools (such as electric drills and wrenches) to complete the installation. It is suitable for construction under limited site conditions. Furthermore, the process is simple and the construction period is short, which can quickly restore the stability of the structure. It is also highly flexible, and the position of the iron hoop or the tightness of the bolts can be adjusted according to the actual situation during construction.

[0038] Its cost is low, making it economical. The low labor cost and the fact that iron hoops and bolts are common industrial products, with prices far lower than modern reinforcement materials such as carbon fiber and steel, make it a cost-effective option.

[0039] For technicians, the technical threshold is low; ordinary workers can operate the equipment after training, eliminating the need to hire expensive professional teams. It also accommodates traditional techniques, preserving the original appearance of the building; the wood-colored paint applied to the exterior is barely noticeable, making it suitable for the restoration of historical buildings.

[0040] Finally, it should be noted that: the preferred embodiments of this patent have been described in detail above, but this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. A crack reinforcement device for wooden upper / lower chord members, used to reinforce the upper and lower chord members of a wooden roof truss, characterized in that: Including clamp-type iron hoops and locking bolts; The clamp-type iron hoop includes two symmetrically arranged iron hoop pieces. Each iron hoop piece includes a groove and a connecting part extending from the groove to both ends. The connecting part is provided with bolt mounting holes. After the two iron hoop pieces are wrapped together, they are fastened together by locking bolts passing through the bolt mounting holes. The grooves formed by the two iron hoops are joined together to enclose and reinforce the wooden components.

2. The wood top / bottom chord crack reinforcement device according to claim 1, characterized in that: The bottom of the groove is densely covered with sharp spikes, which are used to pierce the wooden components to grip them.

3. The wood top / bottom chord crack reinforcement of claim 2, wherein: The sidewalls of the groove are also densely covered with spikes, which are used to pierce the wooden components to grip them.

4. The crack reinforcement device for wooden upper / lower chords according to claim 3, characterized in that: The spikes are welded and fixed to the bottom and sidewalls of the groove.

5. The wood top / bottom chord crack reinforcement of claim 4, wherein: Both ends of the locking bolt are equipped with threaded sections, and both threaded sections at both ends are fitted with a double nut structure.

6. The wood top / bottom chord crack reinforcement apparatus of claim 5, wherein: The threaded sections at both ends of the same locking bolt have the same thread direction.

7. The wood top / bottom chord crack reinforcement apparatus of claim 5, wherein: The threaded sections at both ends of the same locking bolt have opposite thread directions.

8. A crack stiffening device for a wooden top / bottom chord according to claim 6 or 7, characterized in that: The iron hoop is a one-piece structure, and the thickness of the iron hoop is at least 10mm.

9. The wood top / bottom chord crack reinforcement of claim 8, wherein: The groove shape is rectangular, circular, or rhomboid.

10. The wood top / bottom chord crack reinforcement apparatus of claim 8, wherein: The bolt is an M16 bolt.

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