Ancient building wood structure mortise and tenon joint reinforcing device
By designing a mortise and tenon joint reinforcement device, and using a combination of hoop and wing plate structures to fill the connection gaps, the problem of damage to the wood surface caused by existing reinforcement methods is solved, and the stability and adaptability of the mortise and tenon joint are enhanced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-13
- Publication Date
- 2026-04-07
AI Technical Summary
Existing reinforcement methods are prone to damaging the wood surface and are difficult to effectively solve the fit problem at the mortise and tenon joints, affecting the stability of the connection.
Design a mortise and tenon joint reinforcement device for ancient wooden structures, including a column, a connecting beam and reinforcement components. Through a combination structure of hoop, inner plate and wing plate, it fills the joint gap, provides support and protects the joint end, and avoids damage to the surface of the wood.
It improves the fit and stability of mortise and tenon joints, maintains the stability of the connection nodes, avoids damage to the wood surface, adapts to lateral deformation of the structure, and ensures the safety of ancient buildings.
Smart Images
Figure CN224093040U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of reinforcement device technology, and more specifically, to a reinforcement device for mortise and tenon joints of ancient building wooden structures. Background Technology
[0002] Many existing ancient buildings are hundreds or even thousands of years old. Factors such as the degradation of the physical properties of the wood itself, war, natural loads, and human damage have left the wooden structures of these buildings riddled with problems, constantly developing dangers, and even at risk of collapse. Mortise and tenon joints, as the primary method of connection in wooden structures, are particularly vulnerable to damage from aging wood. This damage can lead to severe tilting of columns and beams during earthquakes, and even the collapse of the entire structure. Therefore, it is crucial to perform necessary seismic reinforcement on the mortise and tenon joints of wooden structures, while adhering to the principles of ancient building repair and reinforcement, to ensure that the joints coordinate with the deformation of the connected components.
[0003] Traditional methods for reinforcing mortise and tenon joints in wooden structures include nailing, FRP (fiberglass reinforced plastic) reinforcement, bolting, and steel hoop embedding. While these methods effectively reinforce the mortise and tenon joints, they all cause some damage to the surface of the wooden structure. Furthermore, as the structure ages, gaps easily develop at the mortise and tenon joints, affecting the stability of the connection. Therefore, we propose a reinforcement device for mortise and tenon joints in ancient wooden structures. Utility Model Content
[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a reinforcement device for mortise and tenon joints of ancient building wooden structures, so as to solve the technical problems that the current reinforcement method is prone to damaging the surface of the wood and is inconvenient to solve the fit of the mortise and tenon joints.
[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a mortise and tenon joint reinforcement device for ancient wooden structures, including a cylinder, a connecting beam, and a reinforcement component. The cylinder has mortises on both sides of its end. The connecting beam has an arc-shaped opening adapted to the surface of the cylinder, a tenon fixed in the arc-shaped opening, and an inclined end face opened on the outside of the arc-shaped opening. The tenon mates with the mortise. The reinforcement component includes two hoops sleeved on the outside of the cylinder, an inner piece fixedly connecting the ends of the two hoops, a mating interface opened in the middle of the hoops, and a wing piece and a washer installed in the mating interface. The washer is inserted into the gap between the mortise and the tenon.
[0006] In use, this invention selects a shim of appropriate thickness based on the gap between the mortise and tenon joint. After the shims forming the hoop are fitted together, they are assembled on the outside of the cylinder. Pushing forward allows the shim to be inserted into the gap between the mortise and tenon joint. This structure fills the gap caused by external factors, improving the fit and maintaining the stability of the mortise and tenon joint. At the same time, the beveled end of the wing provides lateral protection to the connecting end of the connecting beam. The angled design of the wing maintains relative pressure, providing a certain support force to the connecting beam. Without damaging the surface of the wood, the stability of the mortise and tenon joint is maintained through filling and outer wing protection.
[0007] Preferably, the interface corresponds to the connecting beam, and the two hoops form a hoop ring that is fixed to the cylinder. The inner side of the end of the hoop is provided with a storage groove.
[0008] Preferably, the built-in piece is located in the storage groove of the hoop piece, and positioning sleeves are arranged in an array on the outer side of the built-in piece. The built-in piece is arc-shaped and fits the cylindrical surface.
[0009] Preferably, the end of the clamp is provided with an adjustment port, which includes a horizontally opened sliding entrance on the inner side and a protruding pressing surface on the outer side. The positioning sleeve enters the docking adjustment port from the sliding entrance, and the adjustment port and the positioning sleeve are connected by a fixing bolt, and the fixing bolt is in contact with the pressing surface.
[0010] Preferably, the lower side of the interface has an assembly opening, and the bottom of the gasket is installed in the assembly opening by a fixing screw.
[0011] Preferably, both ends of the interface are provided with a 90-degree included angle, and positioning posts are equidistantly distributed within the included angle. The bottom of the wing is provided with a clamping end installed within the included angle, and a positioning hole is opened on the clamping end, and the positioning hole is connected to the positioning post.
[0012] Preferably, the length of the wing is greater than the height of the hoop, the wing is inclined, and the inclined surface of the wing presses inward onto the end slope of the connecting beam.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] 1. When using this utility model, according to the gap generated at the mortise and tenon connection, a shim of corresponding thickness is selected. After the shims forming the hoop are fitted together, they are assembled on the outside of the cylinder. Pushing forward, the shim is inserted into the gap at the mortise and tenon connection. The above structure fills the connection gap caused by external factors, improves the fit, and maintains the stability of the mortise and tenon connection. At the same time, the inclined surface of the wing pressing end can provide side protection for the connection end of the connecting beam. The wing angle design maintains relative pressure and provides a certain support force for the connecting beam. Under the premise of avoiding damage to the wood surface, the stability of the mortise and tenon connection is maintained by filling and outer wing protection.
[0015] 2. The hoop ring composed of two hoops in this utility model is circular and needs to be fixed to the surface of the cylinder. As the wooden structure of ancient buildings is subjected to roof loads, its own weight, and external forces such as wind loads and earthquakes over a long period of time, the wood at the mortise and tenon joints is subjected to complex stresses. The wood at the joints will have corresponding lateral deformation accumulation, which may change its original shape and gradually deviate from the cylindrical shape and tend to flatten. In order to maintain reasonable and effective fixation, an internal plate is set to fix the two hoops with adjustable spacing, which is convenient for installation according to the actual cylindrical situation and ensures practical effect. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the reinforcement component of this utility model;
[0018] Figure 3 This is a schematic diagram of the unfolded state of this utility model;
[0019] Figure 4 This is a left-side view of the hoop of this utility model;
[0020] Figure 5 This is a right-side view of the hoop of this utility model;
[0021] Figure 6 This is a schematic diagram of the adjustment port structure of this utility model;
[0022] Figure 7 This is a schematic diagram of the gasket structure of this utility model;
[0023] Figure 8 This is a schematic diagram of the wing structure of this utility model;
[0024] Figure 9 This is a schematic diagram of the connection state of this utility model.
[0025] The following are the labels in the diagram: 1. Cylinder; 101. Mortise; 2. Connecting beam; 201. Arc opening; 202. End bevel; 203. Tenon; 3. Reinforcing component; 301. Hoop; 302. Fixing bolt; 303. Internal piece; 304. Adjustment port; 305. Positioning sleeve; 306. Storage groove; 307. Assembly port; 308. Mud joint; 309. Positioning post; 310. Slide entrance; 311. Pressing surface; 4. Wing; 401. Clamping end; 402. Positioning hole; 5. Gasket; 501. Fixing screw. Detailed Implementation
[0026] like Figures 1 to 6 As shown, this utility model relates to a mortise and tenon joint reinforcement device for ancient wooden structures, including a cylindrical column 1, a connecting beam 2, and a reinforcement component 3. The cylindrical column 1 has mortises 101 on both sides of its end. The connecting beam 2 has an arc-shaped opening 201 adapted to the surface of the cylindrical column 1, a tenon 203 fixed within the arc-shaped opening 201, and an inclined end face 202 on the outer side of the arc-shaped opening 201. The tenon 203 engages with the mortise 101, and the arc-shaped opening 201 conforms to the outer arc surface of the cylindrical column 1, providing comprehensive reinforcement at all angles. Two hoops 301 form a... The hoop is ring-shaped and needs to be fixed to the surface of the cylinder 1. As the ancient wooden structure bears the roof load, its own weight, and may experience external forces such as wind load and earthquake, the wood at the mortise and tenon joint is subjected to complex stress. The wood at the joint will have corresponding lateral deformation accumulation, which may change its original shape and make it gradually deviate from the cylindrical shape and tend to be flat. In order to maintain reasonable and effective fixation, the two hoop pieces 301 are fixed with adjustable spacing by setting the built-in piece 303, which is convenient to install according to the actual situation of the cylinder 1 and ensures practical effect.
[0027] like Figures 4 to 9As shown, this utility model relates to a mortise and tenon joint reinforcement device for ancient wooden structures, comprising a cylindrical column 1, a connecting beam 2, and a reinforcement component 3. The reinforcement component 3 includes two hoop plates 301 sleeved on the outside of the cylindrical column 1, an inner plate 303 fixedly connecting the ends of the two hoop plates 301, a mating interface 308 opened in the middle of the hoop plates 301, and a wing plate 4 and a washer 5 installed in the mating interface 308. The washer 5 is inserted into the gap between the mortise 101 and the tenon 203. The mating interface 308 corresponds to the connecting beam 2. The two hoop plates 301 form a hoop ring that is sleeved and fixed on the cylindrical column 1. A storage groove is provided on the inner side of the end of the hoop plate 301. 306 is installed using a socket joint method, and the connection parts are concealed to reduce the impact on the building's appearance. The built-in piece 303 is located in the storage groove 306 of the clamp piece 301. Positioning sleeves 305 are arranged in an array on the outer side of the built-in piece 303. The built-in piece 303 has an arc-shaped design and fits against the surface of the cylinder 1. An adjustment port 304 is opened at the end of the clamp piece 301. The adjustment port 304 includes a horizontally opened sliding entrance 310 on the inner side and a pressing surface 311 with a protruding design on the outer side. The positioning sleeve 305 enters the mating adjustment port 304 from the sliding entrance 310, and the adjustment port 304 and the positioning sleeve 305 are mated together. Five gaskets are connected by fixing bolts 302, with the fixing bolts 302 fitting against the pressing surface 311. An assembly opening 307 is provided on the lower side of the interface 308. The bottom of the gasket 5 is installed in the assembly opening 307 by a fixing screw 501. Both ends of the interface 308 have a 90-degree angle, and positioning posts 309 are evenly distributed within the angle. The bottom of the wing 4 has a clamping end 401 installed within the angle, and a positioning hole 402 is provided on the clamping end 401, which aligns with the positioning post 309. The length of the wing 4 is greater than the height of the clamp 301. The wing 4 is designed with an inward pressing surface. The end bevel 202 of the connecting beam 2 has a ring formed by two hoop plates 301, which needs to be fixed to the surface of the column 1. As the ancient wooden structure bears the roof load, its own weight, and may experience external forces such as wind load and earthquake, the wood at the mortise and tenon joint is subjected to complex stress. The wood at the joint will have corresponding lateral deformation accumulation, which may change its original shape and make it gradually deviate from the cylindrical shape and tend to be flat. In order to maintain reasonable and effective fixation, the two hoop plates 301 are fixed with adjustable spacing by setting the built-in plate 303, which is convenient to install according to the actual situation of the column 1 and ensures practical effect.
[0028] Working principle: This embodiment provides a mortise and tenon joint reinforcement device for ancient wooden structures. In use, according to the gap generated at the connection between the mortise 101 and the tenon 203, a shim 5 of corresponding thickness is selected. The hoop 301 forming the hoop is then fitted together and assembled on the outside of the cylinder 1. Pushing forward causes the shim 5 to be inserted into the gap between the mortise 101 and the tenon 203. At the same time, the inclined surface 202 of the pressing end of the wing 4 can provide lateral protection for the connection end of the connecting beam 2. The inclined design of the wing 4 maintains relative pressure and provides a certain support force for the connecting beam 2. The built-in plate 303 fixes the two hoops 301 with adjustable spacing, which is convenient for installation according to the actual situation of the cylinder 1.
[0029] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.
Claims
1. A mortise and tenon joint reinforcement device for ancient wooden structures, comprising a column (1) and a connecting beam (2), characterized in that: The system includes a reinforcing component (3), a mortise (101) on both sides of the end of the cylinder (1), an arc-shaped opening (201) adapted to the surface of the cylinder (1), a tenon (203) fixed in the arc-shaped opening (201), and an inclined end face (202) opened on the outside of the arc-shaped opening (201). The tenon (203) is connected to the mortise (101). The reinforcing component (3) includes two hoops (301) sleeved on the outside of the cylinder (1), an inner piece (303) fixedly connecting the ends of the two hoops (301), a mating interface (308) opened in the middle of the hoops (301), and a wing (4) and a gasket (5) installed in the mating interface (308), wherein the gasket (5) is inserted into the gap between the mortise (101) and the tenon (203).
2. The mortise and tenon joint reinforcement device for ancient wooden structures according to claim 1, characterized in that: The interface (308) corresponds to the connecting beam (2), and the two hoops (301) form a hoop ring that is fixed on the cylinder (1). The inner side of the end of the hoop (301) is provided with a storage groove (306).
3. The mortise and tenon joint reinforcement device for ancient wooden structures according to claim 2, characterized in that: The built-in piece (303) is located in the storage groove (306) of the hoop piece (301). Positioning sleeves (305) are arranged in an array on the outer side of the built-in piece (303). The built-in piece (303) is arc-shaped and fits the surface of the cylinder (1).
4. The mortise and tenon joint reinforcement device for ancient wooden structures according to claim 3, characterized in that: An adjustment port (304) is provided at the end of the clamp (301), and the adjustment port (304) includes a sliding entrance (310) with a horizontal opening on the inner side and a pressing surface (311) with a protruding design on the outer side. The positioning sleeve (305) enters the docking adjustment port (304) from the sliding entrance (310), and the adjustment port (304) and the positioning sleeve (305) are connected by a fixing bolt (302), and the fixing bolt (302) fits against the pressing surface (311).
5. The mortise and tenon joint reinforcement device for ancient wooden structures according to claim 1, characterized in that: The lower side of the interface (308) is provided with an assembly port (307), and the bottom of the gasket (5) is installed in the assembly port (307) by a fixing screw (501).
6. A mortise and tenon joint reinforcement device for ancient wooden structures according to claim 5, characterized in that: Both ends of the interface (308) are provided with a 90-degree angle, and positioning posts (309) are distributed at equal intervals within the angle. The bottom of the wing (4) is provided with a clamping end (401) installed within the angle. The clamping end (401) is provided with a positioning hole (402), and the positioning hole (402) is connected to the positioning post (309).
7. A mortise and tenon joint reinforcement device for ancient wooden structures according to claim 6, characterized in that: The length of the wing (4) is greater than the height of the hoop (301). The wing (4) is designed to be inclined, and the inclined surface of the wing (4) presses the end slope (202) of the connecting beam (2) inward.