Novel threaded connection structure based on mortise and tenon joint structure

Abstract

A novel threaded connection structure based on a mortise and tenon joint structure comprises a mortise and tenon joint connecting piece (1), an incomplete taper threaded hole (2), a locking taper screw (3), a locking taper screw external thread (4), a connected piece (5) and a connected piece groove position (6), the incomplete taper threaded hole (2) is formed in the middle of the mortise and tenon joint connecting piece (1), and the locking taper screw external thread (4) is arranged on the locking taper screw (3). The locking taper screw (3) is inserted into the incomplete taper threaded hole (2) for threaded connection, the connected piece (5) is provided with a connected piece groove position (6), and the connected piece groove position (6) is a dovetail groove. According to the invention, the working requirement under a high-pressure environment can be met, the stability and the safety of a joint are ensured, the installation process is simplified, the number and the size of bolts are reduced, and the cost is reduced. Therefore, the installation complexity is reduced, and the installation efficiency can be improved.

Description

Technical Field

[0001] The invention relates to the field of connectors, and in particular to a novel threaded connection structure based on a mortise and tenon structure. Background Art

[0002] Under the background of the overall improvement of the development level of various industries in my country, the quality and level of engineering project construction have been significantly improved. The demand for pipeline and flange connections in various industrial fields has continued to increase. In particular, the detachable connection of high-pressure pipelines and the installation of large flange structures have experienced a leapfrog development process from scratch.

[0003] At present, traditional high-pressure pipelines and large flange connections usually use bolts to provide preload. However, as pipeline pressure increases and flange diameters expand, the number and size of bolts also increase, resulting in a sharp increase in the demand for bolt preload and an increase in the size of bolt holes. This makes the installation of high-pressure pipelines and large flange structures more difficult and reduces installation efficiency. If the installation space is limited and the equipment weight is restricted, the design difficulty is greatly increased.

[0004] In order to meet this challenge, it is necessary to find a new connection solution to solve the installation problem of high-pressure pipelines and large flange structures. This new connection solution should have the following characteristics: High load-bearing capacity: The new connection solution should be able to withstand the working requirements in high-pressure environments and ensure the stability and safety of the connection. Simplify the installation process: The new connection solution should simplify the installation process, reduce the number and size of bolts, and thus reduce the complexity of installation. Improve installation efficiency: The new connection solution should be able to improve installation efficiency and reduce installation time and labor costs. Consider installation space limitations: The new connection solution should take into account the limitations of the installation space and try to reduce the size and occupied space of the connection structure to adapt to the narrow installation environment. Summary of the invention

[0005] The present invention aims at the above-mentioned deficiencies of the prior art and provides a new connection structure based on the mortise and tenon structure. The mechanism cleverly utilizes the ingenuity of the mortise and tenon structure and combines it with modern materials to design a new connection structure based on the mortise and tenon structure with small size and strong locking force.

[0006] The purpose of the present invention is to be achieved through the following technical solutions:

[0007] A new type of threaded connection structure based on a mortise and tenon structure, as shown in the figure, a new type of threaded connection structure based on a mortise and tenon structure, including a mortise and tenon connector, an incomplete cone threaded hole, a locking cone screw, a locking cone screw external thread, a connected part, and a connected part slot. The mortise and tenon connector is provided with an incomplete cone threaded hole in the middle, the locking cone screw is provided with a locking cone screw external thread, the locking cone screw is inserted into the incomplete cone threaded hole for threaded connection, the connected part is provided with a connected part slot, the connected part slot is a dovetail groove, the connected part slot has a fastening inclined surface, and the mortise and tenon connector is provided in the connected part slot.

[0008] The mortise and tenon connector includes a left mortise and tenon connector and a right mortise and tenon connector, and the left connection base and the right connection base are both arranged in the slot of the connected part;

[0009] The left mortise and tenon joint has a left connection base, which is dovetail-shaped, with left fixing inclined planes symmetrically arranged on both sides of the left connection base, a left connection hook on one side of the left connection base, and a left semicircular threaded hole on the inner side of the left connection hook.

[0010] The right mortise and tenon connector has a right connecting base, which is dovetail-shaped, and right fixing inclined surfaces are symmetrically arranged on both sides of the right connecting base. One side of the right connecting base has a right connecting hook, and the inner side of the right connecting hook has a right semicircular threaded hole. When the left mortise and tenon connector is connected to the right mortise and tenon connector, the left connecting hook is connected to the right connecting hook, and the left semicircular threaded hole of the left connecting hook is combined with the right semicircular threaded hole of the right connecting hook to form an incomplete tapered threaded hole. Beneficial Effects

[0011] 1. The new connection structure based on the mortise and tenon structure comprises a mortise and tenon connector 1 and a locking cone screw 3. First, the connected part 5 is aligned and adjusted. There is a connected part slot 6 on the connected part 5. After the connected part slot 6 is aligned, the mortise and tenon connector 1 is placed in the connected part slot 6. The two mortise and tenon connectors 1 form an incomplete cone threaded hole 2. The locking cone screw 3 is continuously rotated and deepened, forcing the incomplete cone threaded hole 2 to engage with the locking cone screw external thread 4 of the locking cone screw 3. The incomplete cone threaded hole 2 is squeezed toward the complete cone threaded hole, and the mortise and tenon connector 1 is relatively In response to movement, the locking cone screw 3 transmits the extrusion force to the mortise and tenon connector 1, and the end of the mortise and tenon connector 1 and the dovetail groove at the end of the connected part slot 6 are squeezed, thereby transmitting the extrusion locking force to the connected part 5 to lock the connected part 5. The present invention can withstand working requirements in high-pressure environments, ensure the stability and safety of the connection, simplify the installation process, reduce the number and size of bolts, thereby reducing the complexity of installation, can improve installation efficiency, reduce installation time and labor costs, and reduce the size and occupied space of the connection structure to adapt to a small installation environment.

[0012] 2. The present invention provides a new connection structure based on the mortise and tenon structure, which can generate greater tensile stress through the same torque; make the installation of large flange connections easier and faster; the mortise and tenon parts can be improved according to different sizes in the later stage to form standardized parts; it can be used with various seals of the high-pressure pipeline group to provide a more reliable pre-tightening force for the high-pressure seal; two planes can be spliced ​​without pre-setting the side structure surface and reserving bolt holes; after the connection, there is no obvious protrusion on the surface of the two connected parts, saving space costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of a novel threaded connection structure based on a mortise and tenon structure described in the present invention.

[0014] Figure 2 This is a schematic diagram of the locking cone screw structure of the present invention.

[0015] Figure 3 It is a schematic diagram of the structure of the right mortise and tenon joint described in the present invention.

[0016] Figure 4 It is a schematic diagram of the slot structure of the connected component described in the present invention.

[0017] Figure 5 It is a schematic diagram of the external thread structure of the locking cone screw described in the present invention. DETAILED DESCRIPTION

[0018] The present invention is further described in detail below according to the accompanying drawings and embodiments:

[0019] The present invention provides a novel connection structure based on the mortise and tenon structure, such as Figure 1 As shown, it includes a locking cone screw 3 and two mortise and tenon connectors 1. The two mortise and tenon connectors 1 are respectively placed in the pre-opened slots of the two components of the connected part 5, and the locking cone screw 3 is inserted into the incomplete cone threaded hole 2 formed by the two mortise and tenon connectors 1 to make the two mortise and tenon connectors 1 approach each other, so that the two connected parts 5 generate a locking force to connect; Figure 2 As shown, it is a locking cone screw 3 with a cone thread, and the end of the locking cone screw 3 has a hexagonal slot to transmit torque; the outer surface of the locking cone screw 3 is provided with a locking cone screw external thread 4; Figure 3 As shown, the specific structure of the mortise and tenon connector 1 includes a mortise and tenon structure and a tapered thread that cooperates with a tapered screw. The tail end of the mortise and tenon connector 1 is designed in a dovetail shape, which transmits the locking force to the connected part 5; Figure 4As shown, it is a connection effect diagram of the present invention. The connected parts 5 are aligned and adjusted, and a connected part slot 6 is reserved on the connected part 5. After the connected part slot 6 is aligned, the mortise and tenon connector 1 is placed in the connected part slot 6. The two mortise and tenon connectors 1 form an incomplete tapered threaded hole 2. The locking tapered screw 3 is continuously rotated and deepened, forcing the incomplete tapered threaded hole 2 to engage with the locking tapered screw external thread 4 of the locking tapered screw 3. The incomplete tapered threaded hole 2 is squeezed and expanded to both sides, and the mortise and tenon connector 1 undergoes relative movement. The locking tapered screw 3 transmits the extrusion force to the mortise and tenon connector 1, and the end of the mortise and tenon connector 1 is squeezed with the dovetail groove at the end of the slot of the connected part 5, thereby transmitting the extrusion locking force to the connected part 5, and locking the connected part 5.

[0020] like Figure 1 As shown, a new type of threaded connection structure based on a mortise and tenon structure comprises a mortise and tenon connector 1, an incomplete cone threaded hole 2, a locking cone screw 3, a locking cone screw external thread 4, a connected member 5, and a connected member slot 6. The mortise and tenon connector 1 is provided with an incomplete cone threaded hole 2 in the middle, the locking cone screw 3 is provided with a locking cone screw external thread 4, the locking cone screw 3 is inserted into the incomplete cone threaded hole 2 for threaded connection, the connected member 5 is provided with a connected member slot 6, the connected member slot 6 is a dovetail groove, the connected member slot 6 has a fastening inclined surface 7, the mortise and tenon connector 1 is provided in the connected member slot 6,

[0021] The mortise and tenon connector 1 comprises a left mortise and tenon connector 11 and a right mortise and tenon connector 21, and the left connection base and the right connection base are both arranged in the connected member slot 6;

[0022] The left mortise and tenon joint 11 has a left connection base 12, which is dovetail-shaped. Left fixing inclined planes 13 are symmetrically arranged on both sides of the left connection base 12. A left connection hook 14 is provided on one side of the left connection base 12, and a left semicircular threaded hole 15 is provided on the inner side of the left connection hook.

[0023] The right mortise and tenon connector 21 has a right connecting base 22, which is dovetail-shaped. Right fixing inclined surfaces 23 are symmetrically arranged on both sides of the right connecting base 22. One side of the right connecting base 22 has a right connecting hook 24, and the inner side of the right connecting hook 24 has a right semicircular threaded hole 25. When the left mortise and tenon connector 11 is connected to the right mortise and tenon connector 21, the left connecting hook 14 is connected to the right connecting hook 24, and the left semicircular threaded hole 15 of the left connecting hook is combined with the right semicircular threaded hole 25 of the right connecting hook to form an incomplete tapered threaded hole 2.

[0024] The incomplete tapered threaded hole 2 formed by the two mortise and tenon joints 1 is as follows Figure 5As shown, the threads at the two contact end points of the incomplete tapered threaded hole 2 are discontinuous along the thread lead angle, and only when the mortise and tenon joint 1 produces relative movement and the tapered threaded hole opens, the threads on the inner wall of the tapered threaded hole that rise along the thread lead angle become continuous. Since the locking tapered screw 3 only contacts the middle part of the incomplete tapered threaded hole 2 when it just contacts the mortise and tenon joint 1, the completed locking tapered screw 3 can initially engage with the incomplete tapered threaded hole, and then continuously rotate to force the incomplete tapered threaded hole to expand to both sides.

[0025] Specific performance comparison:

[0026] In order to support the beneficial contribution of the invention patent with strong data, the performance parameters of the locking parts are compared with those of traditional bolts. The performance parameters of M10 bolts and M10 cone bolts with a taper of 1:16 are compared:

[0027] Traditional bolts: M10; strength level 8.8; coarse thread; pitch 1.5; minor diameter 8.376; cross-sectional area 55.10

[0028] Tensile strength: 800MPa; Yield strength: 640MPa;

[0029] Yield force: 35.267kN; Preload force: 21.16Kn;

[0030] Preload torque: 42.32Nm; recommended torque: 33.856Nm.

[0031] Cone screw for mortise and tenon structure: taper: 1:16; major diameter of cone thread: M10;

[0032] Material: 45 steel; 45 steel yield strength: 355MPa.

[0033] Stress analysis: The locking cone thread is subject to compression force, the dangerous section should be in the middle of the mortise and tenon joint, the yield strength of 45 steel is used, and the safety factor is 0.7; the elastic modulus E=210GPa; the calculated tension force is 46.59kN, and the deformation is 0.025mm.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principles of the present invention, and these improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A new type of threaded connection structure based on mortise and tenon structure, characterized in that : It comprises a mortise and tenon connection piece (1), an incomplete cone threaded hole (2), a locking cone screw (3), a locking cone screw external thread (4), a connected piece (5), and a connected piece slot (6), wherein the mortise and tenon connection piece (1) is provided with an incomplete cone threaded hole (2) in the middle, the locking cone screw (3) is provided with a locking cone screw external thread (4), the locking cone screw (3) is inserted into the incomplete cone threaded hole (2) for threaded connection, the connected piece (5) is provided with a connected piece slot (6), the connected piece slot (6) is a dovetail groove, the connected piece slot (6) has a fastening inclined surface (7), and the mortise and tenon connection piece (1) is arranged in the connected piece slot (6).

2. According to claim 1, a new type of threaded connection structure based on a mortise and tenon structure is characterized in that The mortise and tenon connection member (1) comprises a left mortise and tenon connection member (11) and a right mortise and tenon connection member (21), and the left connection base and the right connection base are both arranged in the connected member slot (6).

3. According to claim 2, a new type of threaded connection structure based on a mortise and tenon structure is characterized in that The left mortise and tenon joint (11) has a left connection base (12), the left connection base (12) is dovetail-shaped, and left fixing inclined surfaces (13) are symmetrically arranged on both sides of the left connection base (12). One side of the left connection base (12) has a left connection hook (14), and the inner side of the left connection hook has a left semicircular threaded hole (15).

4. According to claim 3, a new type of threaded connection structure based on a mortise and tenon structure is characterized in that The right mortise and tenon connector (21) has a right connecting base (22), the right connecting base (22) is dovetail-shaped, and right fixing inclined surfaces (23) are symmetrically arranged on both sides of the right connecting base (22). One side of the right connecting base (22) has a right connecting hook (24), and the inner side of the right connecting hook (24) has a right semicircular threaded hole (25). When the left mortise and tenon connector (11) is connected to the right mortise and tenon connector (21), the left connecting hook (14) is connected to the right connecting hook (24), and the left semicircular threaded hole (15) of the left connecting hook and the right semicircular threaded hole (25) of the right connecting hook are combined to form an incomplete cone threaded hole (2).

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