Detachable assembly type frame structure mortise and tenon joint

Abstract

The invention provides a detachable assembly type frame structure mortise and tenon joint which comprises a mortise and tenon body, a jacking device and a locking device. The jacking device is detachably assembled and is arranged in the mortise and tenon body after being assembled, and the top and the bottom of the mortise and tenon body are respectively provided with a locking device; the locking device is detachably assembled, and the jacking device abuts against the locking device. The jacking device comprises a jacking body, a cam and two jacking rods, and the cam and the jacking rods are arranged in the jacking body; one end of the jacking rod abuts against the cam, and the other end of the jacking rod extends into the locking device and abuts against one part of the locking device. The locking device comprises a spring bolt, one end of the spring bolt abuts against one side face of the jacking rod, and the cam moves to drive the jacking rod to move towards or away from the locking device, so that the other end of the spring bolt locks or unlocks the hollow structure column to be inserted. According to the technical scheme, the technical problems that in the prior art, a connection mode of a joint and a structural column is complex in construction process, high in construction cost, difficult to disassemble after installation and incapable of being repeatedly used can be solved.

Description

Technical Field

[0001] This application relates to the technical field of mortise and tenon joints, and particularly to a detachable prefabricated frame structure mortise and tenon joint. Background Art

[0002] With the development of the civil construction industry towards the direction of "green and energy-saving", prefabricated frame structure buildings have been widely used in the civil construction field due to their advantages such as high efficiency, environmental protection, and wide applications. A prefabricated frame structure is composed of precast beam and column components connected by joints. Therefore, the quality of the joints is related to the safety and stability of the overall structure, and the convenience of joint installation determines the construction progress and cost of the project. In traditional prefabricated frame structures, the connection methods between beam and column components and joints include bolt connection, welding, etc. Although these joint connection methods can meet the force requirements, the construction process is complex. A large amount of manpower and material resources are required during the construction process, resulting in a high cost and a long construction period for construction projects. Moreover, once the prefabricated frame structure formed by traditional joints is installed, it is difficult to disassemble and the structure cannot be reused. Summary of the Invention

[0003] The purpose of the embodiments of this application is to provide a detachable prefabricated frame structure mortise and tenon joint to solve the problems in the prior art such as the complex construction process, high construction cost, difficult disassembly after installation, and inability to be reused for the connection method between the joint and the structural column.

[0004] To solve the above technical problems, the embodiments of this application provide the following technical solutions: This application provides a detachable prefabricated frame structure mortise and tenon joint, including: a mortise and tenon body, a jacking device, and a locking device; the jacking device is detachably assembled and is arranged inside the mortise and tenon body after assembly, and the locking devices are respectively arranged at the top and bottom of the mortise and tenon body; the locking device is detachably assembled, and the jacking device abuts against the locking device; The jacking device includes a jacking body, a cam, and two jacking rods, and the cam and the jacking rods are both arranged inside the jacking body; one ends of the two jacking rods respectively abut against the cam, and the other ends extend into the locking device and abut against a part of the locking device; The locking device includes a locking tongue, one end of the locking tongue abuts against one side surface of the jacking rod, and the movement of the cam drives the jacking rod to move towards or away from the locking device, so that the other end of the locking tongue locks or unlocks the hollow structural column to be inserted.

[0005] In some modified embodiments of the present application, the jacking rod includes a thick lower rod section and a thin upper rod section. One end of the thin upper rod section is exposed outside the jacking body and abuts against a part of the locking device. One side surface of the thin upper rod section abuts against the locking tongue. When the jacking rod jacks up, the side surface of the thick lower rod section abuts against one end of the locking tongue, so that the locking tongue locks the hollow structural column to be inserted. Wherein, the diameter of the thick lower rod section is greater than the diameter of the thin upper rod section.

[0006] In some modified embodiments of the present application, the jacking rod further includes a lower end head and a variable cross-section transition section; the lower end head abuts against the cam, and the variable cross-section transition section is provided between the thick lower rod section and the thin upper rod section.

[0007] In some modified embodiments of the present application, a vertical through hole for the jacking device is provided at the central position of the mortise-tenon body. The jacking device is arranged in the vertical through hole for the jacking device. A radial torsion rod hole is provided at the central position on the side surface of the mortise-tenon body, and the radial torsion rod hole is vertically communicated with the vertical through hole for the jacking device.

[0008] In some modified embodiments of the present application, a limiting guide groove is provided at the top of the channel opening of the vertical through hole for the jacking device of the mortise-tenon body. A limiting guide plate is provided on the outer side surface of the jacking body, and the limiting guide plate is inserted into the limiting guide groove, so that the jacking device is fixedly positioned in the mortise-tenon body.

[0009] In some modified embodiments of the present application, a jacking rod inner cavity and a cam inner cavity are provided in the jacking body. The jacking rod inner cavity and the cam inner cavity are longitudinally communicated. The jacking rod is arranged in the jacking rod inner cavity, and the cam is arranged in the cam inner cavity.

[0010] In some modified embodiments of the present application, a positioning screw is provided at the central position on one side of the cam. A positioning groove communicated with the cam inner cavity is provided in the jacking body, and the positioning screw is arranged in the positioning groove; A torsion nut is provided at the central position on the other side of the cam. The center line of the torsion nut coincides with the center line of the radial torsion rod hole, and the twisting device is inserted into the radial torsion rod hole and sleeved with the torsion nut.

[0011] In some modified embodiments of the present application, the locking device further includes a lock box, a cover plate, a hole piston, a hole spring, and an opening baffle; a vertical through-hole is provided at the center of the lock box, the hole piston is located in the vertical through-hole, and the jacking rod abuts against the hole piston; the cover plate covers the upper surface of the lock box; the hole spring is located between the cover plate and the hole piston; several radial lock tongue holes are provided at the bottom of the lock box, the lock tongues are located in the radial lock tongue holes, and the opening baffle is provided at the front orifice of the radial lock tongue holes.

[0012] In some modified embodiments of the present application, the lock tongue includes a lock head, a thin rod section, a thick rod section, a lock tail, and a lock tongue spring connected in sequence. The opening baffle is installed between the lock head and the lock tongue spring. The lock tongue spring is sleeved outside the thin rod section. One end of the lock tongue spring abuts against the opening baffle, and the other end of the lock tongue spring abuts against the thick rod section of the lock tongue. The lock tail abuts against the jacking rod.

[0013] In some modified embodiments of the present application, the jacking body can be combined and disassembled, and after combination, the cross-sectional dimension of the jacking body matches the cross-sectional dimension of the vertical through-hole of the jacking device in the mortise-tenon body.

[0014] Compared with the prior art, a detachable prefabricated frame structure mortise-tenon joint provided by the present application has the mortise-tenon body as the main stress part of the joint. The function of locking the hollow structural column is given to the mortise-tenon body through the locking device and the jacking device. The hollow structural column is locked or unlocked by the lock tongues of the locking device, which can greatly improve the installation efficiency during the construction process, thereby achieving the purpose of cost savings; the mortise-tenon body, the jacking device, and the locking device are all detachably connected, and both the jacking device and the locking device are detachably assembled, which is not only suitable for permanent buildings but also for temporary buildings, with a wider scope of application. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] By referring to the drawings and reading the detailed description below, the above and other objects, features, and advantages of the exemplary embodiments of the present application will become easily understandable. In the drawings, several embodiments of the present application are shown in an exemplary rather than restrictive manner, and the same or corresponding reference numerals represent the same or corresponding parts, where: Figure 1 Schematically shows the structural diagram of the detachable prefabricated frame structure mortise-tenon joint in this embodiment; Figure 2 Schematically shows the sectional view (unlocked state) of the detachable prefabricated frame structure mortise-tenon joint in this embodiment; Figure 3 Schematically shows the sectional view (locked state) of the detachable prefabricated frame structure mortise-tenon joint in this embodiment; Figure 4 Schematically shows the structural schematic diagram of the mortise and tenon joint of the detachable prefabricated frame structure connected to the structural column in this embodiment; Figure 5 Schematically shows the sectional view of the mortise and tenon joint of the detachable prefabricated frame structure connected to the structural column in this embodiment; Figure 6 Schematically shows the structural schematic diagram of the mortise and tenon body in this embodiment; Figure 7 Schematically shows the sectional view of the mortise and tenon body in this embodiment; Figure 8 Schematically shows the structural schematic diagram of the jacking device in this embodiment; Figure 9 Schematically shows the exploded view of the jacking device in this embodiment; Figure 10 Schematically shows the side sectional view of the jacking device in this embodiment; Figure 11 Schematically shows the front sectional view of the jacking device in this embodiment; Figure 12 Schematically shows the structural schematic diagram of the locking device in this embodiment; Figure 13 Schematically shows the exploded view of the locking device in this embodiment; Figure 14 Schematically shows the sectional view of the locking device in this embodiment.

[0016] Explanation of the reference numerals in the drawings: 1. Mortise and tenon body; 11. Vertically through hole of the jacking device; 12. Radial torsion bar hole; 13. Limit guide groove; 14. Tenon column; 2. Jacking device; 21. Jacking body; 211. Limit guide plate; 212. Inner cavity of the jacking body; 213. Inner cavity of the cam; 214. Positioning groove; 215. Torsion hole; 22. Cam; 221. Positioning screw; 222. Torsion nut; 23. Jacking rod; 231. Lower thin rod section; 232. Upper thin rod section; 233. Lower end head; 234. Variable cross-section transition section; 3. Locking device; 31. Lock tongue; 311. Lock head; 312. Thin rod section; 313. Thick rod section; 314. Lock tail; 315. Lock tongue spring; 32. Lock box; 321. Vertically through hole; 322. Radial lock tongue hole; 33. Cover plate; 34. Hole piston; 35. Hole spring; 36. Opening baffle; 4. Knob device; 5. Hollow structural column. Detailed implementation manners

[0017] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be fully conveyed to those skilled in the art.

[0018] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the ordinary meanings understood by those skilled in the art to which this application belongs. Embodiment

[0019] As Figures 1 to 5 、 Figures 8 to 11 As shown, this embodiment provides a detachable and assembled mortise and tenon joint of a frame structure, including: a mortise and tenon body 1, a jacking device 2, and a locking device 3; the jacking device 2 is detachably assembled, and after assembly, it is detachably arranged in the mortise and tenon body 1. Locking devices 3 are respectively provided at the top and bottom of the mortise and tenon body 1. The locking device 3 is detachably assembled, and the jacking device 2 abuts against the locking device 3. The jacking device 2 includes a jacking body 21, a cam 22, and two jacking rods 23. The cam 22 and the jacking rods 23 are both arranged in the jacking body 21. One end of the two jacking rods 23 abuts against the cam 22, and the other end of the jacking rod 23 extends into the locking device 3 and abuts against a part of the locking device 3. The locking device 3 includes a locking tongue 31. One end of the locking tongue 31 abuts against one side surface of the jacking rod 23. The movement of the cam 22 drives the jacking rod 23 to move towards or away from the locking device 3, so that the other end of the locking tongue 31 extends out of or retracts into the locking device 3, locking or unlocking the hollow structural column 5 to be inserted.

[0020] Specifically, the mortise and tenon body 1 is a hollow solid structure. The mortise and tenon body 1 is the main stress-bearing part of the joint, bearing the beam and column loads of the assembled structure. The locking device 3 and the jacking device 2 endow the mortise and tenon body 1 with the function of locking the hollow structural column.

[0021] The jacking device 2 is detachably assembled. The cam 22 is an ellipsoid. The cam 22 is preferably a cam that is centrosymmetric about the upper and lower bilateral centers. Two longitudinal jacking rods 23 are symmetrically arranged along the center line of the cam 22; in the non-locked state, one end of the jacking rod 23 abuts against the minor axis of the cam 22, and the other end extends out of the jacking body 21 and abuts against a part of the locking device 3; the cam 22 moves, so that the jacking rod 23 abuts against the major axis of the cam 22, realizing the jacking of the jacking rod 23.

[0022] The locking device 3 is detachably assembled, and one end of the locking tongue 31 abuts against one side surface of the jacking rod 21; when the jacking rod 23 jacks up, it pushes the locking tongue 31 of the locking device 3 to extend into the hollow structural column 5 to lock the hollow structural column 5, so that the mortise-tenon joint of the detachable prefabricated frame structure and the hollow structural column 5 are in a locked state; rotate the cam 22, and it returns to the short axis of the jacking rod 23 abutting against the cam 22 to realize the unlocking function.

[0023] The present invention provides a mortise-tenon joint for a detachable prefabricated frame structure, aiming to solve the deficiencies existing in the application of existing prefabricated frame structure joint forms. The present invention is composed of a mortise-tenon body 1, a locking device 3 and a jacking device 2, and the three can be freely combined and disassembled. The locking device 3 and the jacking device 2 are respectively detachably assembled. Among them, the mortise-tenon body 1 serves as the main stress-bearing structure of the joint, playing the role of bearing and transmitting structural loads; the locking device 3 and the jacking device 2 realize the locking and unlocking of the node to the hollow structural column through a unique locking and unlocking mechanism. Compared with the traditional node connection method, this new mortise-tenon joint endows the prefabricated structure with the characteristics of convenient installation and quick disassembly. During installation, the hollow structural column 5 is directly inserted into the joint, rather than bolt or welding connection with complex construction procedures, which can greatly improve the installation progress and reduce the construction cost. At the same time, the locking and unlocking functions of the node can not only ensure the reliable force of the node, but also endow the prefabricated frame structure with the characteristic of quick disassembly. At the same time, the locking device involved in the present invention has an unlocking function, which can realize the quick disassembly of the assembled column members. Therefore, the present invention can not only be used for permanent structures, but also for detachable and repeatable structures. Therefore, the present invention will enable the prefabricated frame structure to have a broader application scenario, and thus achieve good social and economic benefits.

[0024] As Figure 2 、 Figure 3 、 Figures 8 to 10 shown, in a specific implementation, the jacking rod 23 includes a lower thick rod section 231, an upper thin rod section 232, a lower end head 233 and a variable cross-section transition section 234. One end of the upper thin rod section 231 is exposed outside the jacking body 21 and abuts against a part of the locking device 3, one side surface of the upper thin rod section 232 abuts against the locking tongue 31, the lower end head 233 abuts against the cam 22, and a variable cross-section transition section 234 is provided between the lower thick rod section 231 and the upper thin rod section 232; when the jacking rod 23 jacks up, the side surface of the lower thick rod section 231 abuts against one end of the locking tongue 31, so that the locking tongue 31 locks the to-be-inserted structural column 5; Among them, the diameter of the lower thick rod section 231 is larger than the diameter of the upper thin rod section 232.

[0025] Specifically, the jacking rod 23 is composed of a thick lower rod section 231, a thin upper rod section 232, a lower end head 233, and a variable cross-section transition section 234. The thick lower rod section 231, the thin upper rod section 232, the lower end head 233, and the variable cross-section transition section 234 can be integrally formed for easy installation, or they can be detachably connected, connected by threads, etc., which can be disassembled, reused, and easily replaced. The diameter of the thick lower rod section 231 is greater than that of the thin upper rod section 232 to ensure that when the jacking rod 23 rises, it can assist the protrusion of the locking tongue 31. The shortest diameter of the variable cross-section transition section 234 is the same as the diameter of the thin upper rod section 232, and the longest diameter is the same as the diameter of the thick lower rod section 231 to ensure the smooth movement of the jacking rod 23.

[0026] As Figure 6 , Figure 7 shown, a vertical through-hole 11 for the jacking device is provided at the central position of the mortise-tenon body 1. The jacking device 2 is arranged in the vertical through-hole 11 for the jacking device. A radial torsion rod hole 23 is provided at the central position on the side of the mortise-tenon body 1. The radial torsion rod hole 23 is vertically and perpendicularly communicated with the vertical through-hole 11 for the jacking device.

[0027] As Figure 2 , Figure 3 , Figure 6 , Figure 8 shown, in a specific implementation, a limiting guide groove 13 is provided at the top of the channel opening of the vertical through-hole 11 for the jacking device of the mortise-tenon body 1. A limiting guide plate 211 is provided on the outer side of the jacking body 21. The limiting guide plate 211 is inserted into the limiting guide groove 13, so that the jacking device 2 can be fixedly positioned in the mortise-tenon body 1. Among them, the limiting guide groove 13 is adapted to the limiting guide plate 211, and the limiting guide plate 211 can be in the shape of a cube, a cuboid, or any other shape that can ensure disassembly and installation.

[0028] As Figures 9 to 11 shown, in a specific implementation, a jacking rod inner cavity 212 and a cam inner cavity 213 are provided in the jacking body 21. The jacking rod inner cavity 212 and the cam inner cavity 213 are longitudinally communicated. The jacking rod 23 is arranged in the jacking rod inner cavity 212, and the cam 22 is arranged in the cam inner cavity 213. The space in the cam inner cavity 213 is sufficient for the movement of the cam 22. Among them, the center lines of the jacking rod inner cavity 212 and the cam inner cavity 213 coincide with the center line of the vertical through-hole 11 for the jacking device in the mortise-tenon body 1 to maintain stability.

[0029] As Figure 1 , Figure 4 , Figure 9 shown, in a specific implementation, a positioning screw 221 is provided at the central position on one side of the cam 22. A positioning groove 214 communicated with the cam inner cavity 213 is provided in the jacking body 23. The positioning screw 221 is arranged in the positioning groove 214; On the center position of the other side of the cam 22, there is a torsion nut 222. The central axis of the torsion nut 222 coincides with the central axis of the radial torsion rod channel 12. The rotation device 4 is inserted into the radial torsion rod channel 12 and sleeved with the torsion nut 222.

[0030] Specifically, on both sides of the cam 22, there are respectively a positioning screw 221 and a torsion nut 222. Corresponding to the inside of the jacking body 21, there is a positioning groove 214 communicating with the inner cavity 213 of the cam. The positioning screw 221 is placed in the positioning groove 214. The positioning screw 221 fixes the cam 22 at the central position of the inner cavity 213 of the cam and can rotate clockwise or counterclockwise around the central axis of the positioning screw 221, thereby realizing the jacking up and putting down of the two jacking rods 23 above and below (i.e., moving towards or away from the locking device 3); corresponding to the inside of the jacking body 21, there is also a torsion channel 215 communicating with the inner cavity 213 of the cam. The torsion channel 215 ensures that the knob device 4 can extend into the inner cavity 213 of the cam and be sleeved with the torsion nut 222; among them, the central axes of the positioning groove 214 and the knob channel 215 coincide with the central axis of the radial torsion rod channel 12 in the mortise body 1; the knob device 4 is preferably a torsion bar wrench.

[0031] As Figures 12 to 14 shown, in a specific implementation, the locking device 3 further includes a lock box 32, a cover plate 33, a channel piston 34, a channel spring 35 and an opening baffle; there is a vertically penetrating channel 321 at the center of the lock box 32. The channel piston 34 is located in the vertically penetrating channel 321. The jacking rod 23 abuts against the channel piston 34; the cover plate 33 covers the upper surface of the lock box 32; the channel spring 35 is located between the cover plate 33 and the channel piston 34; there are several radial lock tongue channels 322 at the bottom of the lock box 32. The lock tongue 31 is located in the radial lock tongue channels 322. An opening baffle 36 is provided at the front orifice of the radial lock tongue channels 322.

[0032] Specifically, one end of the jacking rod 23 abuts against the channel piston 34. The channel spring 35 is placed in the vertically penetrating channel 321 and abuts against the cover plate 33 and the channel piston 34 at both ends respectively. The channel spring 35 ensures the jacking up of the jacking rod 23 when the node is locked with the hollow structural column 5, and can also provide a restoring force when the node is unlocked from the hollow structural column 5.

[0033] As Figures 12 to 14 shown, in a specific implementation, the lock tongue 31 includes a lock head 311, a thin rod section 312, a thick rod section 313, a lock tail 314 and a lock tongue spring 315 connected in sequence. The opening baffle 36 is installed between the lock head 311 and the lock tongue spring 315. The lock tongue spring 315 is sleeved outside the thin rod section 312. One end of the lock tongue spring 315 abuts against the opening baffle 36, and the other end of the lock tongue spring 315 abuts against the thick rod section 313 of the lock tongue 31. The lock tail 314 abuts against the jacking rod 23.

[0034] Specifically, the locking tongue 31 is composed of a lock head 311, a thin rod section 312, a thick rod section 313, a lock tail 314, and a locking tongue spring 315 that are connected in sequence. Among them, the lock head 311, the thin rod section 312, the thick rod section 313, and the lock tail 314 that are connected in sequence can be integrally formed or can be set to be detachably connected; one side of the jacking rod 23 abuts against the lock tail 314, the locking tongue spring 315 is sleeved outside the thin rod section 312, an opening baffle 36 is provided between the lock head 311 and the locking tongue spring 315, and the locking tongue spring 315 abuts between the opening baffle 36 and the thick rod section 313. The locking tongue spring 315 ensures that the locking tongue 31 can extend out of the radial locking tongue channel 322 of the lock box 32, so that the node is locked with the hollow structural column 5. When the node is unlocked from the hollow structural column 5, the locking tongue spring 315 provides a restoring force, so that the locking tongue 31 retracts into the radial locking tongue channel 322; among them, when in the unlocked state, the distance from the lock head 311 to the orifice of the radial locking tongue channel 322 is less than the distance difference between the lower thick rod section 231 and the upper thin rod section 232, ensuring that when the jacking rod 23 jacks up, the locking tongue 31 can extend out of the radial locking tongue channel 322 to lock with the hollow structural column 5.

[0035] As Figure 2 , Figure 3 , Figure 9 shown, in a specific implementation, the jacking body 21 can be combined and disassembled, and after combination, the cross-sectional dimension of the jacking body 21 matches the dimension of the cross-section of the vertical through-hole 11 of the jacking device in the mortise-tenon body 1.

[0036] It should be noted that the jacking mentioned in this embodiment is all towards the locking device 3.

[0037] A detachable and assembled frame structure mortise-tenon joint in this embodiment can realize the unlocked state, the locked state, and the unlocked state between the joint and the hollow structural column; As Figure 2 shown, the unlocked state is: the cam 22 and the jacking rod 23 are installed in the inner cavity 212 of the jacking body, and the jacking body 21 is combined and inserted into the vertical through-hole 11 of the jacking device of the mortise-tenon body 1; during this process, the limiting guide plate 211 of the jacking body 21 is inserted into the limiting guide groove 13 on the surface of the mortise-tenon body 1 to fix the jacking body 21 in place; each part of the locking device is combined and installed at the top and bottom of the mortise column 14 of the mortise-tenon body 1. At this time, the upper thin rod section 232 of the jacking rod 23 is tightly pressed against the orifice piston 34 under the action of the orifice spring 35, and the lower end head 233 of the jacking rod 23 contacts and presses against the cam 22; at the same time, under the action of the locking tongue spring 315, the lock tail 314 of the locking tongue 32 contacts and presses against the side surface of the upper thin rod section 232 of the jacking rod 23, and the lock head 311 of the locking tongue 31 is hidden in the radial locking tongue channel 322; the hollow steel pipe concrete column is sleeved on the mortise column and in place.

[0038] As Figure 3As shown, the locked state is as follows: based on the above-mentioned unlocked state, the knob device 4 is inserted from the radial torsion bar passage 12, passed through the knob passage and sleeved with the cam 22 and the torsion nut 222. By rotating the cam 22 clockwise through the knob device 4 by 90°, the cam 22 moves to lift the lifting rod 23; at the same time, the cam 22 is in a tightened state. During this process, due to the lifting of the lifting rod 23, the lower thin rod section 231 abuts against the locking tail 314 of the locking tongue 31, so that the locking head 311 of the locking tongue 31 extends out of the lock box and inserts into the corresponding groove on the inner wall of the hollow structural column 5, realizing the locking of the node to the column member.

[0039] Unlocked state: based on the above-mentioned unlocked state, by rotating the cam 22 counterclockwise through the knob device 4 by 90°, using the restoring forces of the locking tongue spring 315 and the passage spring 35, when the locking tongue 31 and the lifting rod 23 return to the unlocked state, the unlocking of the node and the hollow structural column 5 is realized.

[0040] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A detachable and assembled frame structure mortise and tenon joint, characterized in that, Comprising: A mortise and tenon body, a jacking device, and a locking device; The jacking device is detachably assembled and is arranged inside the mortise and tenon body after assembly. The locking devices are respectively arranged at the top and bottom of the mortise and tenon body; the locking device is detachably assembled, and the jacking device abuts against the locking device; The jacking device includes a jacking body, a cam, and two jacking rods. The cam and the jacking rods are both arranged inside the jacking body; one ends of the two jacking rods respectively abut against the cam, and the other ends extend into the locking device and abut against a part of the locking device; The locking device includes a locking tongue. One end of the locking tongue abuts against one side surface of the jacking rod. The movement of the cam drives the jacking rod to move towards or away from the locking device, so that the other end of the locking tongue locks or unlocks the hollow structural column to be inserted.

2. The mortise and tenon joint of a detachable prefabricated frame structure according to claim 1, wherein, The jacking rod includes a thick lower rod section and a thin upper rod section. One end of the thin upper rod section is exposed outside the jacking body and abuts against a part of the locking device. One side surface of the thin upper rod section abuts against the locking tongue. When the jacking rod jacks up, the side surface of the thick lower rod section abuts against one end of the locking tongue, so that the locking tongue locks the hollow structural column to be inserted; Wherein, the diameter of the thick lower rod section is greater than the diameter of the thin upper rod section.

3. The mortise and tenon joint of a detachable prefabricated frame structure according to claim 2, wherein, The jacking rod further includes a lower end head and a variable cross-section transition section; the lower end head abuts against the cam, and the variable cross-section transition section is arranged between the thick lower rod section and the thin upper rod section.

4. The detachable and assembled frame structure mortise and tenon joint according to claim 1, characterized in that, A vertical through hole for the jacking device is arranged at the central position of the mortise and tenon body. The jacking device is arranged in the vertical through hole for the jacking device. A radial torsion rod hole is arranged at the central position of the side surface of the mortise and tenon body. The radial torsion rod hole is vertically communicated with the vertical through hole for the jacking device.

5. The mortise and tenon joint of a detachable prefabricated frame structure according to claim 4, wherein A limiting guide groove is arranged at the top of the channel opening of the vertical through hole for the jacking device of the mortise and tenon body. A limiting guide plate is arranged on the outer side surface of the jacking body. The limiting guide plate is inserted into the limiting guide groove, so that the jacking device is fixed in place inside the mortise and tenon body.

6. The detachable and assembled frame structure mortise and tenon joint according to claim 4, wherein, A jacking rod inner cavity and a cam inner cavity are arranged inside the jacking body. The jacking rod inner cavity and the cam inner cavity are longitudinally communicated. The jacking rod is arranged inside the jacking rod inner cavity, and the cam is arranged inside the cam inner cavity.

7. The mortise and tenon joint of a detachable prefabricated frame structure according to claim 6, characterized in that, A positioning screw is arranged at the central position of one side of the cam. A positioning groove communicated with the cam inner cavity is arranged inside the jacking body. The positioning screw is arranged in the positioning groove; A torsion nut is arranged at the central position of the other side of the cam. The center line of the torsion nut coincides with the center line of the radial torsion rod hole. The twisting device is inserted into the radial torsion rod hole and is sleeved with the torsion nut.

8. The mortise and tenon joint of a detachable prefabricated frame structure according to claim 1, characterized in that, The locking device further includes a lock box, a cover plate, a hole piston, a hole spring, and an opening baffle; a vertical through hole is arranged at the center of the lock box. The hole piston is located in the vertical through hole. The jacking rod abuts against the hole piston; the cover plate covers the upper surface of the lock box; the hole spring is located between the cover plate and the hole piston; a plurality of radial locking tongue holes are arranged at the bottom of the lock box. The locking tongue is located in the radial locking tongue holes. The opening baffle is arranged at the front hole opening of the radial locking tongue holes.

9. The detachable prefabricated frame structure mortise and tenon joint according to claim 8, characterized in that, The lock tongue includes a lock head, a thin rod section, a thick rod section, a lock tail and a lock tongue spring which are connected in sequence. The opening baffle is installed between the lock head and the lock tongue spring. The lock tongue spring is sleeved outside the thin rod section. One end of the lock tongue spring abuts against the opening baffle, and the other end of the lock tongue spring abuts against the thick rod section of the lock tongue. The lock tail abuts against the jacking rod.

10. A mortise and tenon joint of a detachable prefabricated frame structure according to claim 4, characterized in that, The jacking body can be combined and disassembled, and the cross-sectional dimension of the jacking body after combination is consistent with the dimension of the vertically penetrating pore passage of the jacking device in the mortise and tenon body.

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