CN209989958U

CN209989958U - Self-tapping screw reinforced wood pin half tenon joint

Info

Publication number: CN209989958U
Application number: CN201920659434.0U
Authority: CN
Inventors: 王明谦; 陈溪; 冷予冰; 陈玲珠; 王卓琳; 许清风
Original assignee: Shanghai Building Science Research Institute Co Ltd
Current assignee: Shanghai Building Science Research Institute Co Ltd
Priority date: 2019-05-09
Filing date: 2019-05-09
Publication date: 2020-01-24
Anticipated expiration: 2029-05-09

Abstract

The utility model relates to a self-tapping screw reinforced wood pin half tenon joint, which comprises a first wood component with a mortise opening and a second wood component with a tenon; on the second wood component, a group of self-tapping screws with the same grain are drilled into the axial direction of the tenon along the grain direction, and a group of self-tapping screws with the same grain are drilled into the tenon along the transverse grain direction perpendicular to the axial direction; a group of cross grain self-tapping screws are drilled into the positions, located on the two sides of the mortise opening, of the first wood component along the direction of the cross grain; and a corresponding pre-drilled hole is vertically formed in the corresponding position of the tenon and the mortise, and a wood pin is inserted into the pre-drilled hole. The utility model discloses guarantee that the node has sufficient initial rigidity, bending resistance bearing capacity and deformability to prevent that the tenon fracture from destroying and timber striation splitting from destroying, improve the atress performance of node.

Description

Self-tapping screw reinforced wood pin half tenon joint

Technical Field

The utility model relates to a civil engineering field, concretely relates to traditional timber structure consolidates and reforms transform, and the maintenance of especially tenon fourth of twelve earthly branches node is consolidated.

Background

The application of wood as building material in China has a long history. The traditional wood structure buildings are various in types and occupy a large proportion of ancient Chinese buildings. The tenon-and-mortise joint is one of the commonly used component connection forms in the traditional wood structure. Unlike concrete structures and steel structures, traditional Chinese wood structures generally exhibit the characteristic of "strong member weak nodes", and thus the nodes are the focus of attention of such structural systems.

Under the action of horizontal load, brittle tenon fracture damage and wood cross grain fracture damage easily occur to the half tenon joint of the wood pin. This makes inefficient use of the load bearing and deformation capabilities of such nodes.

Therefore, how to optimally design the structure of the wooden pin half tenon joint, improve the initial strength, the bending resistance bearing capacity and the deformability of the joint, prevent the tenon fracture damage and the wood cross grain fracture damage, and further improve the stress performance of the joint is a technical problem to be solved in the field.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a half tenon node of self tapping screw reinforced (rfd) wooden round pin guarantees that the node has sufficient initial rigidity, bending resistance bearing capacity and deformability to prevent that the tenon fracture from destroying with timber striation splitting, improve the atress performance of node.

The utility model adopts the following technical proposal:

a self-tapping screw reinforced wood pin half-tenon joint comprises a first wood component 1 with a mortise opening and a second wood component 2 with a tenon; on the second wood component 2, a group of self-tapping screws 5 with the same grain are drilled into the axial direction of the tenon along the grain direction, and a group of self-tapping screws 4 with the same grain are drilled into the tenon along the grain direction perpendicular to the axial direction; a group of cross grain self-tapping screws 4 are drilled into the positions, located on the two sides of the mortise opening, of the first wood component 1 along the direction of the cross grain; and a corresponding pre-drilled hole is vertically formed in the corresponding position of the tenon and the mortise, and a wood pin 3 is inserted into the pre-drilled hole.

Further, the cross-thread self-tapping screw 4 is arranged in the first wood member 1 and the second wood member 2 in a penetrating manner.

Furthermore, the self-tapping screw 5 with the same grain is arranged in the second wood member 2 from the tenon end part inwards in a non-penetrating mode.

Furthermore, the cross-grain self-tapping screws 4 and the parallel-grain self-tapping screws 5 on the second wood member 2 are in a vertically staggered groined structure.

Furthermore, the tenon part of the second wood component 2 is in a step shape, the mortise part of the corresponding first wood component 1 is also in a step shape, and each step part is at least provided with a self-tapping screw 5 along the grain.

The manufacturing method of the wood pin half tenon joint comprises the following steps: slotting the middle of the thickness of the first wood component 1 to form a mortise; processing the end part of the second wood member 2 to form a tenon; pre-drilling holes at the corresponding positions of the tenon and the mortise; drilling a self-tapping screw 5 with the grain along the grain direction of the wood at the tenon, and ensuring that the included angle between the self-tapping screw 5 with the grain direction of the wood is 0 degree by setting constraint conditions; drilling cross grain self-tapping screws 4 in the wood cross grain direction near the tenon and mortise connected with the wooden pin, and ensuring that the included angle between the cross grain self-tapping screws 4 and the wood grain direction is 90 degrees by setting constraint conditions; and (4) putting the reinforced tenon into the mortise, and penetrating a wooden pin into the pre-drilled hole to realize connection.

Furthermore, the self-tapping screw 5 with the same grain drilled in the tenon along the grain direction of the wood does not penetrate through the two bodies of the wood component.

The beneficial effects of the utility model reside in that:

1) optimally designing the structure of the half tenon joint part to ensure that the joint has enough initial rigidity, bending resistance bearing capacity and deformation capacity;

2) prevent tenon fracture damage and timber striae fracture damage, improve the atress performance of node.

3) The reinforced joint is simple in structure, convenient to construct, small in influence on the appearance of the wood member and convenient to popularize in engineering.

4) The tenon part adopts the self-tapping screw with the same grain drilled along the wood with the same grain direction to form a # -shaped structure with the self-tapping screw with the cross grain, thereby obviously improving the strength of the tenon part and fundamentally preventing the fracture and the damage of the tenon and the fracture of the cross grain of the wood.

Drawings

Fig. 1 is a front view of the self-tapping screw reinforced wood pin half tenon joint of the present invention.

FIG. 2 is a top view of a self-tapping screw reinforced tenon.

Fig. 3 is a side view of fig. 2.

FIG. 4 is a top view of the reinforced female screw.

FIG. 5 is a side view of the reinforced female screw.

In the figure, 1, a first wood component, 2, a second wood component, 3, a wood pin, 4, a cross-thread self-tapping screw and 5, a parallel-thread self-tapping screw.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 to 5, a self-tapping screw reinforced wood pin half-tenon joint comprises a first wood component 1 with a mortise and a second wood component 2 with a tenon; on the second wood component 2, a group of self-tapping screws 5 with the same grain are drilled into the axial direction of the tenon along the grain direction, and a group of self-tapping screws 4 with the same grain are drilled into the tenon along the grain direction perpendicular to the axial direction; a group of cross grain self-tapping screws 4 are drilled into the positions, located on the two sides of the mortise opening, of the first wood component 1 along the direction of the cross grain; and a corresponding pre-drilled hole is vertically formed in the corresponding position of the tenon and the mortise, and a wood pin 3 is inserted into the pre-drilled hole.

In this embodiment, referring to fig. 1, the thread self-tapping screw 4 is penetratingly provided in the first wood member 1 and the second wood member 2.

In this embodiment, referring to fig. 1, the self-tapping screw 5 is non-penetratingly arranged in the wood member 2 from the tenon end portion to the inside.

In this embodiment, referring to fig. 1, the cross-thread self-tapping screws 4 and the cross-thread self-tapping screws 5 on the second wood member 2 are in a vertically staggered groined structure.

In this embodiment, referring to fig. 1, the tenon portion of the second wood member 2 is stepped, the mortise portion of the corresponding first wood member 1 is also stepped, and each stepped portion is provided with at least one self-tapping screw 5.

And (3) during processing of the half tenon joint of the wood pin: slotting the middle of the thickness of the first wood component 1 to form a mortise; and processing the end part of the second wood member 2 to form a tenon. The geometric dimension of mortise is 1mm bigger than tenon, guarantees the smooth installation of tenon.

And (3) during processing of the half tenon joint of the wood pin: and drilling holes at specific positions of the tenon and mortise, wherein the geometric dimension of the holes is 1mm larger than that of the wooden pin so as to insert the wooden pin 3.

The wood pin half tenon joint comprises: drilling a self-tapping screw at the tenon along the grain direction of the wood, and ensuring that the included angle between the self-tapping screw and the grain direction of the wood is 0 degree by setting constraint conditions; and (3) drilling self-tapping screws in the wood cross grain direction near the tenon and mortise connected with the wooden pin, and ensuring that the included angle between the self-tapping screws and the wood grain direction is 90 degrees by setting constraint conditions. The distance and the diameter of the self-tapping screw can be specifically determined according to the sectional dimensions of the tenon and the mortise and the stress condition of the node.

The wood pin half tenon joint comprises: and (4) putting the reinforced tenon into the mortise, and penetrating a wooden pin into the pre-drilled hole to realize connection.

The utility model provides a pair of half tenon node of self tapping screw reinforced (rfd) wooden round pin can prevent effectively that tenon fracture from destroying and timber striae cleavage from destroying, and node initial rigidity, bending resistance bearing capacity, deformability and power consumption ability are all more outstanding. The reinforced joint is simple in structure, convenient to construct, small in influence on the appearance of the wood member and convenient to popularize in engineering.

The above are preferred embodiments of the present invention, and those skilled in the art can make various changes or improvements on the above embodiments without departing from the general concept of the present invention, and these changes or improvements should fall within the scope of the present invention.

Claims

1. The utility model provides a self tapping screw reinforced (rfd) wooden round pin half tenon node which characterized in that:

the wood member comprises a first wood member (1) with a mortise and a second wood member (2) with a tenon;

on the second wood component (2), a group of self-tapping screws (5) with the same grain are drilled into the axial direction of the tenon along the grain direction, and a group of self-tapping screws (4) with the same grain are drilled into the tenon along the grain direction perpendicular to the axial direction;

a group of cross grain self-tapping screws (4) are drilled into the positions, located on the two sides of the mortise opening, of the first wood component (1) along the direction of the cross wood grain;

and a corresponding pre-drilled hole is vertically formed in the corresponding position of the tenon and the mortise, and a wood pin (3) is inserted into the pre-drilled hole.

2. A self-tapping screw reinforced wood-pin half-tenon joint as defined in claim 1, wherein: the cross-grain self-tapping screw (4) penetrates through the first wood component (1) and the second wood component (2).

3. A self-tapping screw reinforced wood-pin half-tenon joint as defined in claim 2, wherein: the self-tapping screw (5) with the same grain is arranged in the second wood component (2) from the end part of the tenon to the inside in a non-penetrating mode.

4. A self-tapping screw reinforced wood-pin half-tenon joint as defined in claim 3, wherein: the cross-grain self-tapping screws (4) and the longitudinal-grain self-tapping screws (5) on the second wood component (2) are in a vertically staggered groined structure.