Ribbed steel bar inserting connector

Abstract

The utility model relates to the technical field of buildings, and discloses a ribbed steel bar inserting connector. At least two outer sleeve shell installation parts are arranged on an inner sleeve shell, one end of each outer sleeve shell is arranged on one outer sleeve shell installation part in a sleeving mode, a reinforcing steel bar locking assembly is arranged in each outer sleeve shell, a reinforcing steel bar abutting groove with an opening facing the interior of the corresponding outer sleeve shell is formed in each outer sleeve shell installation part, and each reinforcing steel bar abutting groove is in a circular truncated cone shape. The diameter of the notch is larger than the caliber of a ribbed steel bar base circle, the diameter of the groove bottom is in interference fit with the caliber of the ribbed steel bar base circle, and the included angle between the side wall of the steel bar abutting groove and the notch is an acute angle. The ribbed steel bar inserting connector is simple in structure, good in stability, high in adaptability and easy to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of construction, in particular to a ribbed steel bar plug connector. Background Art

[0002] With the deepening of my country's industrialization process, the construction industry has achieved rapid development, and the use of steel bars has increased day by day. Existing steel bar binding includes: binding connection, welding connection, mechanical connection and cold extrusion connection. At present, the mechanical connection technology of connecting multiple sections of steel bars together through sleeves is widely used at home and abroad. Although it overcomes a series of problems such as inconvenient operation, substandard strength after welding, and bulky cold extrusion tools, there are still many shortcomings. For example, China Patent Publication No. CN219261530U, the publication date is June 27, 2023, and the name of the invention is a steel bar connector. A steel bar connector is disclosed, including a first connector, a second connector and a connecting sleeve, one end of the connecting sleeve is slidably connected to the first connector, and the other end is threadedly connected to the second connector, and the connection of two steel bars is achieved by tightening the thread. Its disadvantage is that the steel bar connector and the steel bar are connected by thread, and it is necessary to make threads at the steel bar joints, so that the diameter of the steel bar joints is reduced, which affects the structural safety, and the operation is complicated and not suitable for steel bars of different calibers. Utility Model Content

[0003] In order to solve the problems of low stability and low adaptability of steel bar connections, the utility model provides a ribbed steel bar plug-in connector, which improves the connection stability of the ribbed steel bars by unifying the entry angle and length of the ribbed steel bars and constructing an interference fit at the connection part. At the same time, the connector can be suitable for ribbed steel bars of different calibers.

[0004] The utility model provides a ribbed steel bar plug connector, comprising an inner shell and at least two outer shells, wherein the inner shell is provided with at least two outer shell mounting parts, one end of each outer shell is respectively sleeved on one outer shell mounting part, each outer shell is provided with a steel bar locking component, each outer shell mounting part is provided with a steel bar abutment groove with an opening toward the inside of the outer shell, the steel bar abutment groove is truncated cone-shaped, the groove diameter is larger than the base circular diameter of the ribbed steel bar, the groove bottom diameter forms an interference fit with the base circular diameter of the ribbed steel bar, and the angle between the side wall of the steel bar abutment groove and the groove is an acute angle.

[0005] When the connector is connected to the ribbed steel bar, the inner shell and the ribbed steel bar establish an interference fit structure, which increases the friction between the ribbed steel bar and the connector, making the connection more secure and unaffected by temperature changes, ensuring the reliability of the overall structure after installation, and not easy to fall off or loosen. The steel bar abutment groove is designed as a truncated cone-shaped groove, which can prevent stress concentration from causing cracks or even breakage in the inner shell. The structure forming an acute angle between the side wall of the steel bar abutment groove and the notch can make the ribbed steel bars of the same caliber enter the notch at a fixed angle, with the same entry length, and the end after connection is fixed. The axis of the ribbed steel bar is kept horizontal with the axis of the connector, which greatly improves the stability of the ribbed steel bar connection and can adapt to the connection of ribbed steel bars of different calibers. The overall structure of the connector is simple, with low requirements for processing accuracy, and is convenient for industrial assembly line production. The connector is easy to operate, and the ribbed steel bar can be connected by inserting it from the end of the connector, which can be used in a large number of real life.

[0006] Furthermore, the ratio of the diameter of the steel bar abutting groove to the groove bottom diameter is 1.5 to 5:1, and the groove bottom diameter is smaller than the base circle diameter of the ribbed steel bar.

[0007] The groove bottom diameter is smaller than the base diameter of the ribbed steel bars, which prevents the ribbed steel bars from abutting the groove bottom through the steel bars, so that the ends of the ribbed steel bars are close to the inclined edge of the groove bottom.

[0008] Furthermore, the steel bar locking assembly consists of a steel bar locking piece and an elastic component. The steel bar locking piece is provided with a steel bar through-hole coaxially arranged with the steel bar abutment groove. The inner diameter of the steel bar through-hole is the same as the base circle diameter of the ribbed steel bar. The elastic component is arranged between the steel bar locking piece and the inner shell.

[0009] The steel bar locking piece locks the ribbed steel bar after it is inserted, and the elastic component supports the steel bar locking piece to prevent it from moving, so that the position of the ribbed steel bar is fixed and will not fall out.

[0010] Furthermore, a serrated thread or a plurality of serrated bevel grooves are provided on the cavity wall of the steel bar lock penetration cavity.

[0011] The serrated thread or multiple serrated bevel grooves fit with the protrusions on the outer wall of the ribbed steel bar, which limits the ribbed steel bar and helps to securely connect the connector to the ribbed steel bar so that the ribbed steel bar will not loosen or fall out, thereby reliably locking the ribbed steel bar.

[0012] Furthermore, a groove is provided on the inner wall of the steel bar locking piece, and a tension spring is provided in the groove.

[0013] The expansion spring combines the steel bar locking parts together and gives the steel bar locking parts a force from the inside to the outside, so that the steel bar locking parts are fixed in the outer shell.

[0014] Furthermore, the elastic component is a spring, which is coaxially arranged with the steel bar through-hole, the outer diameter of the spring is larger than the notch diameter of the steel bar abutment groove, and the inner diameter is not smaller than the outer rib diameter of the ribbed steel bar.

[0015] The spring has a shock absorbing capability, and its outer diameter is larger than the notch diameter of the steel bar abutment groove, so that the ribbed steel bar can enter the steel bar abutment groove.

[0016] Furthermore, a spring installation groove is provided at the notch of the steel bar abutment groove in the outer shell installation portion, and the diameter of the spring installation groove is larger than the outer diameter of the spring.

[0017] The spring is installed on the spring installation groove to fix the position of the spring, thereby better defining the position of the steel bar locking piece.

[0018] Furthermore, one end of the spring is connected to the inner casing, and the other end is separated from the steel bar locking piece by a gasket, wherein the gasket is provided with a through hole having a diameter larger than the diameter of the outer rib of the ribbed steel bar.

[0019] The gasket can make the spring force more even and prevent the ribbed steel bar from rotating, which will affect the stability of the entire connecting device.

[0020] Furthermore, the outer shells assembled on the same inner shell have the same structure, and the inner ends of each outer shell after being assembled to the inner shell conflict with each other, forming a symmetrical structure as a whole.

[0021] After the ribbed steel bar is inserted into the connector, the forces applied to each end of the connection device are equal, forming a stable structure. At the same time, the structure has a smooth appearance, uniform force, high stability, and is easy to process.

[0022] Furthermore, the connecting end between the outer shell and the outer shell mounting portion is a cylindrical barrel, and the end away from the outer shell mounting portion is a truncated cone barrel, and the ratio of the cross-sectional diameter of the truncated cone barrel end to the cross-sectional diameter of the cylindrical barrel end is 1:1.2-1.8.

[0023] The cylindrical barrel end is sleeved with the outer shell connecting portion, and the truncated cone barrel end locks the steel bar bite piece inwardly so that the steel bar locking piece will not loosen.

[0024] Compared with the prior art, the utility model has the following advantages:

[0025] 1. Higher stability. The connection device is a symmetrical structure with a steel bar abutment groove inside, so that the ribbed steel bar entry angle and entry length are always consistent. The end is fixed after connection, and the inner wall of the steel bar locking piece has serrations. The ribbed steel bar will not loosen after connection, forming a stable structure.

[0026] 2. Greater adaptability. The bottom diameter of the steel bar abutment groove is smaller than the base diameter of the ribbed steel bar, establishing an interference fit structure so that the connector is not affected by the thermal expansion and contraction of the ribbed steel bar. An acute angle is formed between the side wall of the steel bar abutment groove and the groove, which can adapt to the connection of ribbed steel bars of different diameters.

[0027] 3. Simple structure, low precision requirement, easy to process. Symmetrical structure, simplified parts, large assembly margin. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic structural diagram of the ribbed steel bar plug connector in Example 1.

[0029] Figure 2 It is a schematic structural diagram of the inner shell in Example 1.

[0030] Figure 3 This is a schematic diagram of the usage status of the ribbed steel bar plug connector in Example 1.

[0031] Explanation of the reference numerals: 1-inner shell, 2-outer shell, 3-rebar locking member, 4-elastic member, 5-gasket, 6-tension spring, 7-spring mounting groove, 8-rebar abutment groove, 9-rebar through-hole. DETAILED DESCRIPTION

[0032] The present invention is further described below in conjunction with the embodiments. The devices, connection structures and methods involved in the present invention are all devices, connection structures and methods known in the art unless otherwise specified.

[0033] Example 1

[0034] The present embodiment discloses a ribbed steel bar plug-in connector for connecting ribbed steel bars, comprising an inner shell 1 and at least two outer shells 2, characterized in that the inner shell 1 is provided with at least two outer shell mounting parts, one end of each outer shell 2 is respectively sleeved on an outer shell mounting part, a steel bar locking assembly is provided in each outer shell 2, and a steel bar abutment groove 8 with an opening toward the inside of the outer shell is provided in each outer shell mounting part, the steel bar abutment groove 8 is truncated cone-shaped, the groove diameter is larger than the base circular diameter of the ribbed steel bar, the groove bottom diameter forms an interference fit with the base circular diameter of the ribbed steel bar, and the angle between the side wall of the steel bar abutment groove 8 and the groove is an acute angle.

[0035] As a specific implementation, the ratio of the notch diameter of the steel bar abutment groove 8 to the groove bottom diameter is 1.5 to 5:1, and the groove bottom diameter is smaller than the base diameter of the ribbed steel bar. The steel bar locking assembly is composed of a steel bar locking member 3 and an elastic member 4. The steel bar locking member 3 is provided with a steel bar through-hole 9 coaxially arranged with the steel bar abutment groove 8, and the inner diameter of the steel bar through-hole 9 is the same as the base diameter of the ribbed steel bar. The elastic member 4 is arranged between the steel bar locking member 3 and the inner casing 1. The cavity wall of the steel bar through-hole 9 is provided with a serrated thread or a plurality of serrated inclined grooves. The inner wall of the steel bar locking member 3 is provided with a groove, and a tension spring 6 is arranged in the groove. The elastic member 4 is a spring, which is coaxially arranged with the steel bar through-hole 9. The outer diameter of the spring is larger than the notch diameter of the steel bar abutment groove 8, and the inner diameter is not smaller than the outer rib diameter of the ribbed steel bar. A spring installation groove 7 is provided at the notch of the steel bar abutment groove 8 in the outer casing mounting portion, and the diameter of the spring installation groove 7 is larger than the outer diameter of the spring. One end of the spring is connected to the inner shell 1, and the other end is in contact with the steel bar locking piece 3 and is provided with a gasket 5, wherein the gasket 5 is provided with a through hole having a diameter larger than the diameter of the outer rib of the ribbed steel bar. The outer shells 2 assembled on the same inner shell 1 have the same structure, and the inner ends of each outer shell 2 after being assembled to the inner shell 1 are in contact with each other, forming a symmetrical structure as a whole. The connecting end of the outer shell 2 and the outer shell mounting part is a cylindrical barrel, and the end away from the outer shell mounting part is a truncated cone barrel, and the ratio of the cross-sectional diameter of the truncated cone barrel end to the cross-sectional diameter of the cylindrical barrel end is 1:1.2-1.8.

[0036] Example 2

[0037] This embodiment discloses a ribbed steel bar plug connector for connecting ribbed steel bars. Figure 1-3 It is understood that the ribbed steel bar plug connector includes an inner shell 1 and two outer shells 2, the outer shell 1 is provided with an outer thread on its outer wall, the outer shell 2 is provided with an inner thread corresponding to the outer thread of the inner shell 1 on its inner wall, and the inner shell 1 is threadedly connected with the outer shell 2. Among them, the inner shell 1 is a symmetrical structure, provided with two outer shell mounting parts, the outer shell mounting parts are provided with an elastic component 4, a spring mounting groove 7 and a steel bar abutment groove 8 with an opening facing the inner part of the outer shell, one end of the elastic component 4 is arranged in the spring mounting groove 7, and the other end is in contact with the steel bar locking member 3 and is provided with a gasket 5; the spring mounting groove 7 is arranged at the notch of the steel bar abutment groove, and its diameter is the same as the outer diameter of the spring; the steel bar abutment groove 8 is a truncated cone-shaped groove, which is coaxially arranged with the spring. Among them, the outer shell 2 is provided with a steel bar locking member 3, and the steel bar locking member 3 is provided with a steel bar through cavity 9 coaxially arranged with the steel bar abutment groove 8, the steel bar locking member 3 is located at the ribbed steel bar entrance end, and the inner wall of the steel bar locking member 3 is provided with a groove, and the tension spring 6 is provided in the groove. In this embodiment, the elastic member 4 is a spring.

[0038] In this embodiment, the outer shell 2 is a hollow structure, one end of the outer shell 2 and the inner shell 1 is threadedly connected to a cylindrical cylinder, and the end connected to the ribbed steel bar is a truncated cone cylinder, and the cross-sectional diameter of the truncated cone cylinder end is smaller than the cross-sectional diameter of the cylindrical cylinder end, and the ratio of the two is 1:1.5. The steel bar locking member 3 is composed of four component modules, which are iron parts. After being combined, a hollow ring structure with a steel bar through-hole 9 is formed. The inner diameter of the steel bar through-hole 9 is the same as the base diameter of the ribbed steel bar. One end of the steel bar locking member 3 is truncated cone-shaped and the other end is cylindrical. The installation direction of the truncated cone end is consistent with the direction of the truncated cone cylinder of the outer shell 2. The tension spring 6 connects the various component modules of the steel bar locking member 3 and gives the steel bar locking member 3 a force from the inside to the outside, so that the steel bar locking member 3 is close to the inner wall of the outer shell 2. The wall of the steel bar through-hole 9 in the steel bar locking member is provided with a barbed sawtooth thread, which plays a locking role on the ribbed steel bar.

[0039] In this embodiment, the inner shell 1 is a symmetrical structure, and the outer shell mounting parts at both ends are respectively provided with springs, spring mounting grooves 7 and a steel bar abutment groove 8 with an opening facing the inner part of the outer shell. The steel bar abutment groove 8 is a truncated cone-shaped groove, the groove bottoms are abutted, the angle between the side wall and the groove is an acute angle, and the depth of the groove is 12.3mm. The angle plays a guiding and positioning role when the two sections of ribbed steel bars are connected, so that the angle and length of the two sections of ribbed steel bars entering the groove are always consistent, the rear end of the connection is fixed, the axis of the ribbed steel bar is kept horizontal with the axis of the connector, and the outer wall of the ribbed steel bar protrudes into the barb-shaped tooth groove of the steel bar locking piece. The diameter of the truncated cone groove is 37.4mm, the diameter of the groove bottom is 25mm, and the groove bottom diameter is smaller than the base diameter of the ribbed steel bar, so as to establish an interference fit structure. The structure can constrain the ribbed steel bar from passing through the bottom of the steel bar abutment groove, so that its end is close to the middle end of the bevel of the bottom of the groove, and at the same time increase the friction between the ribbed steel bar and the connector, making the connection more firm, not affected by the thermal expansion and contraction performance of the ribbed steel bar, ensuring the reliability of the overall structure after installation, and will not fall off or loosen. The spring is arranged in the spring installation groove 7, one end is installed at the notch of the steel bar abutment groove, the other end extends out of the groove to contact the steel bar locking piece 3 and a gasket 5 is arranged on the top surface, the outer diameter of the spring is larger than the notch diameter of the steel bar abutment groove 8, and the inner diameter is not less than the outer rib diameter of the ribbed steel bar. The spring gives the steel bar locking piece 3 an opposing force, resists the steel bar locking piece 3 to prevent it from running, and limits the position of the steel bar locking piece 3 to the ribbed steel bar entrance end in the outer shell 2. The diameter of the spring installation groove 7 is slightly larger than the outer diameter of the spring, which is convenient for spring installation. A through hole with a diameter larger than the outer rib diameter of the ribbed steel bar is provided in the gasket 5. The gasket 5 can make the spring and the steel bar locking piece 3 more evenly stressed when they are against each other, and improve the stability of the entire connection device.

[0040] When in use, first combine the inner shell 1 and the outer shell 2 into a connector with a symmetrical overall structure, insert the ribbed steel bar from one end of the truncated cone-shaped tube of the outer shell 2, pass through the steel bar locking piece 3 and abut against the steel bar abutment groove 8, the spring abuts against the steel bar locking piece 3, the tension spring 6 makes the steel bar locking piece 3 close to the inner wall of the outer shell 2, the truncated cone-shaped tube end of the outer shell 2 tightens the steel bar locking piece 3 inward, the steel bar locking piece 3 locks the ribbed steel bar, and the other end of the connector is also inserted into the ribbed steel bar and locked by the steel bar locking piece 3 to complete the connection of the ribbed steel bar. When the ribbed steel bar passes through the steel bar locking piece 3, a force will be applied to the steel bar locking piece 3, causing its deformation position to shift. At this time, the tension spring applies a force from the inside to the outside to the steel bar locking piece 3, so that the steel bar locking piece 3 is tightly attached to the inner wall of the outer shell 2. The spring resists the steel bar locking piece 3 to prevent it from moving, and the position of the steel bar locking piece 3 is limited to the entrance end of the ribbed steel bar in the outer shell 2. The truncated cone-shaped cylinder of the outer shell 2 locks the steel bar bite piece 3 inward, so that the steel bar locking piece 3 will not loosen. The steel bar abutment grooves 8 at both ends of the inner casing 1 are symmetrical truncated cone-shaped grooves, and the angle between the side wall of the steel bar abutment groove and the notch is an acute angle. This structure is suitable for connecting ribbed steel bars of various diameters, which improves the adaptability of the connector. At the same time, the length and angle of the two sections of ribbed steel bars entering the groove are always consistent. The end is fixed after the connection, and the axis of the ribbed steel bar is kept horizontal with the axis of the connector, which improves the stability of the connector; the notch diameter of the steel bar abutment groove 8 is 37.4mm, the bottom diameter of the groove is 25mm, the bottom diameter of the groove is smaller than the base diameter of the ribbed steel bar, and the depth is 12.3mm. When the connector is connected to the ribbed steel bar, the end of the ribbed steel bar is close to the middle end of the bottom bevel of the groove, and the inner casing 1 and the ribbed steel bar establish an interference fit structure, which increases the friction between the ribbed steel bar and the connector and improves the connection stability. In addition, the structure is smooth and gentle, which can well prevent local stress increase, resulting in cracks or even fractures in the inner casing 1, improve the structural strength of the connector, and improve safety.

[0041] The ribbed steel bar plug connector provided in this embodiment is provided with a steel bar abutment groove 8, so that the angle and length of the two sections of ribbed steel bars entering the groove are always consistent, the rear end of the connection is fixed, close to the groove bottom bevel, the axis of the ribbed steel bar is kept horizontal with the axis of the connector, so that the outer wall protrusion of the ribbed steel bar is tightly combined with the serrated thread of the steel bar through cavity 9 in the steel bar locking piece 3, forming a self-locking structure, ensuring the stability of the connector when the ribbed steel bar enters, and preventing stress concentration from causing cracks or even fractures in the inner shell 1, and reducing the size of the inner shell 1 while increasing the ribbed steel bar. Entry length; by setting a spring, a tension spring 6 and a truncated cone-shaped cylinder end of the outer shell 2, the steel bar bite piece 3 is fixed and locked inward; by setting an inner shell 1 and a ribbed steel bar to establish an interference fit structure, the friction between the ribbed steel bar and the connector is increased, so that the two sections of ribbed steel bars are firmly connected together; by setting a steel bar locking piece 3 with a serrated thread on the inner wall, the steel bar is locked; by setting the outer shell structure assembled on the same inner shell to be the same, the inner ends of each outer shell after being assembled to the inner shell conflict with each other, forming a symmetrical structure as a whole, and improving the structural strength of the connector.

[0042] The ribbed steel bar plug connector provided in this embodiment has a stable structure, a large adaptability, strong compression and tension resistance, a simple structure, and is easy to use. It has low requirements for processing accuracy, is convenient for industrial assembly line production, and can be widely used in real life. When in use, the ribbed steel bar connection end does not need to be threaded, and the overall structural strength of the steel bar will not be damaged.

[0043] Example 3

[0044] This embodiment discloses a ribbed steel bar plug connector for connecting ribbed steel bars. The structure and principle of this embodiment are roughly the same as those of Embodiment 2, except that: the inner shell 1 and the outer shell 2 are connected by a snap-on method; the steel bar abutment groove in the inner shell 1 is a truncated cone-shaped groove with a groove diameter of 45.2 mm, a groove bottom diameter of 10 mm, and a depth of 18.6 mm, and the elastic component 4 is a C-shaped elastic washer; the steel bar locking member 3 in the outer shell 2 is composed of four iron pieces with sawtooth-shaped inclined grooves on the inner wall.

[0045] Example 4

[0046] This embodiment discloses a ribbed steel bar plug connector for connecting ribbed steel bars. The structure and principle of this embodiment are roughly the same as those of the second embodiment, except that: the inner shell 1 is in a "Y-shaped" shape, and is provided with three outer shell mounting parts, connecting three outer shells 2, and the inner shell 1 and the outer shell 2 are connected by a socket connection; the inner shell 1 is a solid symmetrical structure, and the internal steel bar abutment groove is a truncated cone-shaped groove, and the bottom of the grooves touch each other to form a structure with a cross section of an equilateral triangle, the diameter of the groove is 30.5 mm, the diameter of the groove bottom is 15.2 mm, and the depth is 10 mm; the steel bar locking piece 3 in the outer shell 2 is composed of three iron pieces with barbed serrated threads on the inner wall.

[0047] In the description of the present invention, it should be understood that the terms "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0048] The above description is only a preferred embodiment of the present invention and does not constitute any limitation to the present invention. Any simple modification, change and equivalent structural transformation made to the above embodiments according to the technical essence of the present invention shall still fall within the protection scope of the technical solution of the present invention.

Claims

1. A ribbed steel bar plug connector, comprising an inner shell (1) and at least two outer shells (2), characterized in that: The inner shell is provided with at least two outer shell mounting parts, one end of each outer shell is respectively mounted on one outer shell mounting part, a steel bar locking assembly is provided in the outer shell, a steel bar abutment groove (8) with an opening toward the inside of the outer shell is provided in the outer shell mounting part, the steel bar abutment groove is truncated cone-shaped, the groove opening diameter is larger than the base circular diameter of the ribbed steel bar, the groove bottom diameter forms an interference fit with the base circular diameter of the ribbed steel bar, and the angle between the side wall of the steel bar abutment groove and the groove opening is an acute angle.

2. A ribbed steel bar plug connector according to claim 1, characterized in that: The ratio of the groove opening diameter to the groove bottom diameter of the steel bar abutting groove (8) is 1.5-5:1, and the groove bottom diameter is smaller than the base circle diameter of the ribbed steel bar.

3. The ribbed steel bar plug connector according to claim 1, characterized in that: The steel bar locking assembly is composed of a steel bar locking piece (3) and an elastic component (4). The steel bar locking piece is provided with a steel bar through-hole (9) coaxially arranged with the steel bar abutment groove. The inner diameter of the steel bar through-hole is the same as the base diameter of the ribbed steel bar. The elastic component is arranged between the steel bar locking piece and the inner casing.

4. A ribbed steel bar plug connector according to claim 3, characterized in that: The cavity wall of the steel bar penetration cavity (9) is provided with a sawtooth-shaped thread or a plurality of sawtooth-shaped inclined grooves.

5. A ribbed steel bar plug connector according to claim 3 or 4, characterized in that: The inner wall of the steel bar locking piece (3) is provided with a groove, and a tension spring (6) is provided in the groove.

6. The ribbed steel bar plug connector according to claim 3, characterized in that: The elastic component (4) is a spring, which is coaxially arranged with the steel bar through-hole (9), the outer diameter of the spring is larger than the notch diameter of the steel bar abutment groove (8), and the inner diameter is not smaller than the outer rib diameter of the ribbed steel bar.

7. A ribbed steel bar plug connector according to claim 6, characterized in that: A spring installation groove (7) is provided at the notch of the steel bar abutment groove (8) in the outer shell installation portion, and the diameter of the spring installation groove is larger than the outer diameter of the spring.

8. The ribbed steel bar plug connector according to claim 6, characterized in that: One end of the spring is connected to the inner casing (1), and the other end is separated from the steel bar locking piece (3) by a gasket (5), wherein a through hole having a diameter greater than the diameter of the outer rib of the ribbed steel bar is provided in the gasket.

9. The ribbed steel bar plug connector according to claim 1, characterized in that: The outer shells (2) assembled on the same inner shell (1) have the same structure, and the inner ends of each outer shell after being assembled on the inner shell abut against each other, forming a symmetrical structure as a whole.

10. The ribbed steel bar plug connector according to claim 1, characterized in that: The connecting end between the outer shell (2) and the outer shell mounting portion is a cylindrical barrel, and the end away from the outer shell mounting portion is a truncated cone barrel, and the ratio of the cross-sectional diameter of the truncated cone barrel end to the cross-sectional diameter of the cylindrical barrel end is 1:1.2-1.8.

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