Rebar anti-drop connecting device

Abstract

The utility model discloses a steel bar anti-drop connecting device, relates to the technical field of steel bar connection, and can solve the problems that an existing steel bar connecting sleeve cannot meet the use requirement of a first-stage connector, and installation is tedious. The steel bar anti-drop connecting device comprises a connecting sleeve used for connecting two steel bar main bodies and a clamping sleeve assembly used for being meshed into the steel bar main bodies and locked with the steel bar main bodies in shape. The end of the connecting sleeve is provided with a conical binding opening used for assisting in sliding press forming of the connecting sleeve. The clamping sleeve assembly comprises a plurality of clamping clamping sleeves with the hardness larger than that of the steel bar body, the clamping clamping sleeves are distributed in the connecting sleeve in the circumferential direction of the connecting sleeve in a clearance mode, and the clamping clamping sleeves and the connecting sleeve are relatively fixed in the axial direction of the connecting sleeve. A plurality of clamping grooves are formed in the side, away from the connecting sleeve, of the clamping clamping sleeve.

Description

Technical Field

[0001] The utility model relates to the technical field of steel bar connection, in particular to a steel bar anti-detachment connection device. Background Art

[0002] At present, the main mechanical connection methods of steel bars in the field of construction engineering include electroslag pressure welding, grouting sleeves, steel bar threaded sleeves, cold extrusion sleeves, etc. There are joint requirements in the steel bar connection requirements, namely, primary, secondary, and tertiary joint requirements.

[0003] The existing ordinary sleeves only meet the requirements of secondary or tertiary joints. The reason is that the inner wall of the current sleeve is usually relatively smooth. After the connection is formed, the sleeve is deformed into a shape that is compatible with the transverse ribs and longitudinal ribs of the steel bar body. There is a gap between the inner wall of the sleeve and the base circle of the steel bar. The two are separated from each other or in contact with each other. There is no shape locking between the two. After the two steel bar bodies are pulled, the transverse ribs and longitudinal ribs of the steel bar body are easy to fall off. Therefore, before the connection, it is usually necessary to thread the steel bar and heat treat the ends to enhance the hardness of the material and reduce the risk of falling off of the transverse ribs and longitudinal ribs of the steel bar body. The overall installation and use is cumbersome, and often requires the collaborative installation of multiple people, which is time-consuming and inefficient.

[0004] Aiming at the problem that ordinary sleeves cannot meet the requirements of the first-level joint and the installation is cumbersome, the utility model inventor has designed a steel bar anti-detachment connection device to solve the problem that the existing steel bar connection sleeves cannot meet the requirements of the first-level joint and the installation is cumbersome. Utility Model Content

[0005] The purpose of this application is to provide a steel bar anti-detachment connection device to solve the problem that the connection strength requirement of the steel bar connection sleeve in the prior art cannot meet the use requirements of the first-level joint and the installation is cumbersome.

[0006] The utility model adopts the following scheme:

[0007] On the one hand, the present application provides a steel bar anti-detachment connection device, comprising a connection sleeve for connecting two steel bar bodies, and a clamping sleeve assembly for biting into the steel bar body and locking with it;

[0008] The end of the connecting sleeve is provided with a conical opening for assisting the sliding forming of the connecting sleeve;

[0009] The clamping sleeve assembly includes a plurality of clamping sleeves whose hardness is greater than that of the main body of the steel bar. The plurality of clamping sleeves are distributed in the connecting sleeve in a gap-like manner along the circumference of the connecting sleeve. The clamping sleeve and the connecting sleeve are relatively fixed along the axial direction of the connecting sleeve.

[0010] A plurality of clamping grooves are arranged on one side of the clamping sleeve away from the connecting sleeve.

[0011] The core concept of the present application is that a clamping sleeve with a hardness greater than that of the steel bar body is arranged in the connecting sleeve, and a plurality of clamping grooves are arranged on the clamping sleeve, so that after the connecting sleeve is formed by sliding and pressing, the clamping grooves of the clamping sleeve can clamp the transverse ribs on the steel bar body; in addition, the raised portion between the side walls of the clamping grooves can be partially pressed into the base circle portion of the steel bar body, so that the clamping sleeve and the base circle of the steel bar body and the transverse ribs are all form-locked and fixed, which can effectively improve the clamping effect between the clamping sleeve and the steel bar body, and then improve the clamping connection effect between the connecting sleeve and the steel bar body, meet the first-level connection requirements, and avoid the problem that the transverse ribs and longitudinal ribs are easy to fall out of the connecting sleeve after the steel bar body is pulled due to the low surface hardness of the existing steel bars.

[0012] Under the core concept of this application, some optional or preferred solutions are as follows:

[0013] Optionally, it also includes a reducing ring for forming the sliding connection sleeve, and the inner circumferential wall of the reducing ring is provided with a conical closing end that is compatible with the conical opening.

[0014] Optionally, a limiting protrusion for limiting the sliding position of the reducing ring is provided on the connecting sleeve;

[0015] The limiting protrusion is arranged at the end of the connecting sleeve, and the tapered opening is located at the other end of the connecting sleeve away from the limiting protrusion;

[0016] The reducing ring is sleeved on the conical opening of the connecting sleeve.

[0017] Optionally, a limiting protrusion for limiting the sliding position of the reducing ring is provided on the connecting sleeve;

[0018] The limiting protrusion is arranged at the middle position of the connecting sleeve, and both side ends of the connecting sleeve are provided with a conical beam opening;

[0019] The two conical ports of the connecting sleeve are both provided with reducing rings.

[0020] Optionally, the plurality of clamping sleeves are evenly distributed along the circumference and axial direction of the connecting sleeve;

[0021] The shape of the clamping sleeve is fan-shaped, and the central angle R1 corresponding to the inner arc of the fan-shaped clamping sleeve is smaller than the central angle R2 corresponding to the outer arc of the fan-shaped clamping sleeve.

[0022] Optionally, the clamping slot extension line corresponding to the clamping slot of the clamping sleeve is spiral or circular;

[0023] The longitudinal section of the clamping slot may be in any one of a U-shape, a rectangle or a triangle with a horizontal opening.

[0024] Optionally, the longitudinal section of the clamping slot is a U-shape with a horizontal opening;

[0025] The side surface of the groove of the clamping slot close to the middle part of the connecting sleeve is inclined;

[0026] The clamping slot has a depth dimension greater than or equal to the height of the transverse ribs and longitudinal ribs of the steel bar body.

[0027] Optionally, a plurality of the clamping sleeves are integrally fixedly connected to the inner peripheral wall of the connecting sleeve;

[0028] A through-type wall groove for reducing the diameter of the connecting sleeve is provided on the inner peripheral wall of the connecting sleeve;

[0029] The shape of the through-type wall groove is any one of U-shape, semicircle, trapezoid, rectangle and triangle;

[0030] The hardness of the connecting sleeve is less than the hardness of the clamping ferrule.

[0031] Optionally, a ferrule mounting groove is provided on the inner circumferential wall of the connecting sleeve, and a plurality of clamping ferrules are removably disposed in the ferrule mounting groove.

[0032] Optionally, the hardness of the clamping sleeve is greater than or equal to: 40HRC.

[0033] On the other hand, the present application provides a connection method of a steel bar anti-detachment connection device, which is applicable to any of the above-mentioned steel bar anti-detachment connection devices, and comprises the following steps:

[0034] S1. Preparation for connection: install the reducing ring onto the conical opening of the connecting sleeve;

[0035] S2. Put the steel bars in place, and then insert the two steel bar bodies into the connecting sleeves;

[0036] S3, the connecting sleeve is reduced in diameter, and the reducing ring is driven to slide on the connecting sleeve and squeeze the connecting sleeve until the entire connecting sleeve is completely reduced in diameter.

[0037] Beneficial effects of the utility model:

[0038] 1. The present application provides a clamping sleeve with a hardness greater than that of the steel bar body in the connecting sleeve, and a plurality of clamping grooves are provided on the clamping sleeve, so that after the connecting sleeve is formed by sliding and pressing, the clamping grooves of the clamping sleeve can clamp the transverse ribs and longitudinal ribs on the steel bar body; in addition, the raised portion between the side walls of the clamping grooves can be partially pressed into the base circle portion of the steel bar body, so that the clamping sleeve and the base circle of the steel bar body, as well as the transverse ribs and longitudinal ribs are all form-locked and fixed, which can effectively improve the clamping effect between the clamping sleeve and the steel bar body, and thus improve the clamping connection effect between the connecting sleeve and the steel bar body, meet the first-level connection requirements, and avoid the problem that the transverse ribs and longitudinal ribs are easily detached from the connecting sleeve after the steel bar body is pulled due to the low surface hardness of the existing steel bar body.

[0039] 2. The side of the groove of the clamping slot of the present application is inclined near the middle side of the connecting sleeve, which can enhance the structural strength of the raised part between the clamping slots, avoid stress concentration during the pulling process of the two steel bars, and reduce the risk of breakage of the raised part between the clamping slots. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 This is a schematic diagram of the cross-sectional structure of Example 1 of the present application before molding.

[0041] Figure 2 This is a schematic diagram of the cross-sectional structure of Example 1 of the present application after molding.

[0042] Figure 3 This is a schematic diagram of the top view of the ferrule assembly in Example 1 of the present application.

[0043] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure of AA.

[0044] Figure 5 This is a schematic diagram of the cross-sectional structure of Example 2 of the present application before molding.

[0045] Figure 6 This is a schematic diagram of the cross-sectional structure of Example 2 of the present application after molding.

[0046] Figure 7 This is a schematic diagram of the cross-sectional structure of Example 3 of the present application before molding.

[0047] Figure 8 This is a schematic diagram of the cross-sectional structure of Example 3 of the present application after molding.

[0048] Fig. 9 This is a schematic diagram of the cross-sectional structure of Example 4 of the present application before molding.

[0049] Fig.10 This is a schematic diagram of the cross-sectional structure of Example 4 of the present application after molding.

[0050] Fig.11 This is a schematic diagram of the three-dimensional structure of the connecting sleeve in Example 4 of the present application.

[0051] Fig.12 This is a schematic diagram of the cross-sectional structure of Example 5 of the present application before molding.

[0052] Fig.13 This is a schematic diagram of the cross-sectional structure of Example 5 of the present application after molding.

[0053] Fig.14 This is a schematic diagram of the cross-sectional structure of Example 6 of the present application before molding.

[0054] Fig.15 This is a schematic diagram of the cross-sectional structure of Example 6 of the present application after molding.

[0055] Description of reference numerals:

[0056] 1-steel body, 101-transverse rib, 2-connecting sleeve, 201-ferrule mounting groove, 202-conical bundle mouth, 203-limiting protrusion, 3-clamping ferrule, 301-clamping slot, 4-reducing ring, 401-conical closing mouth. DETAILED DESCRIPTION

[0057] The present invention will be further described in detail below in conjunction with the embodiments and drawings, but the implementation manner of the present invention is not limited thereto.

[0058] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inside", "outside", "front", "back", "top", "bottom", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0059] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "open", "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0061] Embodiment 1:

[0062] like Figures 1 to 4 As shown, this embodiment provides a steel bar anti-detachment connection device, including a connecting sleeve 2 for connecting two steel bar bodies 1, and a clamping sleeve assembly for locking the steel bar body 1;

[0063] The end of the connecting sleeve 2 is provided with a conical opening 202 for assisting the sliding forming of the connecting sleeve 2;

[0064] The clamping sleeve assembly includes a plurality of clamping sleeves 3 whose hardness is greater than that of the steel bar body 1. The plurality of clamping sleeves 3 are distributed in the connecting sleeve 2 in a gap-like manner along the circumference of the connecting sleeve 2. The clamping sleeves 3 and the connecting sleeve 2 are relatively fixed along the axial direction of the connecting sleeve 2.

[0065] A plurality of clamping grooves 301 are provided on a side of the clamping sleeve 3 facing away from the connecting sleeve 2 .

[0066] The core concept of the present application is that a clamping sleeve 3 with a hardness greater than that of the steel bar body 1 is arranged in the connecting sleeve 2, and a plurality of clamping grooves 301 are arranged on the clamping sleeve 3, so that after the connecting sleeve 2 is formed by sliding and pressing, the clamping grooves 301 of the clamping sleeve 3 can clamp the transverse ribs 101 and the longitudinal ribs on the steel bar body 1; in addition, the raised portion between the side walls of the clamping grooves 301 can be partially pressed into the base circle portion of the steel bar body 1, so that the clamping sleeve 3 and the base circle of the steel bar body 1, as well as the transverse ribs 101 and the longitudinal ribs are all formed into a form-locked fixation, which can effectively improve the clamping effect between the clamping sleeve 3 and the steel bar body 1, and then improve the clamping connection effect between the connecting sleeve 2 and the steel bar body 1, meet the first-level connection requirements, and avoid the problem that the transverse ribs 101 and the longitudinal ribs are easy to slip out of the connecting sleeve 2 after the steel bar body 1 is pulled due to the low surface hardness of the existing steel bars.

[0067] Under the core concept of this application, some optional or preferred solutions are as follows:

[0068] Specifically, in this embodiment, a reducing ring 4 for forming the sliding connection sleeve 2 is also included, and a conical closing end 401 which is adapted to the conical opening 202 is provided on the inner circumferential wall of the reducing ring 4. In this embodiment, the reducing ring 4 in this embodiment is specifically an anvil. Its cross section is a circular ring structure. Before the connection sleeve 2 is formed, the reducing ring 4 is sleeved on the conical opening 202 of the connection sleeve 2. By using external power equipment, such as hydraulic C-type pliers, riveting equipment, etc., the reducing ring 4 can be driven to slide axially in the connection sleeve 2. During the continuous sliding of the reducing ring 4, the tapered closing mouth 401 of the reducing ring 4 continuously squeezes the connecting sleeve 2 to shrink and deform inward, and then squeezes the clamping sleeve 3, driving the clamping sleeve 3 to move radially inward along the steel bar body 1, so that the transverse ribs 101 of the steel bar body 1 are clamped into the clamping groove 301 of the clamping sleeve 3, and at the same time, the raised parts between the clamping grooves 301 can be pressed into the base circle of the steel bar body 1, thereby improving the bite strength between the clamping sleeve 3 and the steel bar body 1. Compared with the prior art, the connection stability is better, and it also avoids the situation that after the two steel bar bodies 1 are pulled, the bite strength between the connecting sleeve 2 and the steel bar body 1 completely relies on the transverse ribs 101 and longitudinal ribs of the steel bar. The transverse ribs 101 and longitudinal ribs of the steel bar body 1 are easy to fall off, and the connection strength is not high, thereby solving the problem that the existing connection device does not meet the requirements of the first-level joint.

[0069] Specifically, in this embodiment, the plurality of clamping sleeves 3 are evenly distributed along the circumference and axial direction of the connecting sleeve 2;

[0070] The shape of the clamping sleeve 3 is fan-shaped, and the central angle R1 corresponding to the inner arc of the fan-shaped clamping sleeve 3 is smaller than the central angle R2 corresponding to the outer arc. By providing a plurality of evenly distributed clamping sleeves 3, the clamping strength between the steel bar body 1 and the sleeve assembly can be improved to meet the connection strength requirements of the first-level joint.

[0071] In the present embodiment, since the center angle R1 corresponding to the inner arc of the fan-shaped clamping sleeve 3 is smaller than the center angle R2 corresponding to the outer arc, after the multiple clamping sleeves 3 move radially inwardly along the steel bar body 1, the center of the circle corresponding to the multiple clamping sleeves 3 can gradually approach the axis of the steel bar body 1, or directly coincide with the axis of the steel bar body 1, so that after the clamping sleeve 3 and the steel bar body 1 are clamped to each other, each position on the inner side of the clamping sleeve 3 is clamped with the steel bar body 1 to form a positive locking fixation, ensuring a good clamping and locking effect between the two, and ensuring that the entire connecting device can meet the requirements of the first-level joint.

[0072] Specifically, in this embodiment, the clamping slot extension line corresponding to the clamping slot 301 of the clamping sleeve 3 is spiral or circular;

[0073] The longitudinal section of the clamping slot 301 is any one of a U-shape, a rectangle or a triangle with a horizontal opening. In this embodiment, the extension line corresponding to the clamping slot 301 is in a circular ring shape, and the slot where the clamping slot 301 is located is a part of the circular ring, that is, an arc shape. The technician can also set the clamping slot 301 to a part of a spiral shape as needed; in this embodiment, the longitudinal section of the clamping slot 301 is in a horizontal U-shape, which is convenient for matching with the transverse ribs 101 and longitudinal ribs of the steel bar. The technician can also set it to a rectangle, a triangle, or even other shapes such as a regular pentagon, a regular hexagon, a semicircle, etc. as needed, and no examples will be given here one by one.

[0074] Specifically, the longitudinal cross-section of the clamping slot 301 is a U-shape with a horizontal opening;

[0075] The clamping slot 301 is inclined at the groove side near the middle of the connecting sleeve 2;

[0076] The clamping slot 301 has a depth dimension greater than or equal to the height of the transverse rib 101 and the longitudinal rib of the steel bar body 1. In this embodiment, the depth of the clamping slot 301 is greater than the height dimension of the transverse rib 101 and the longitudinal rib of the steel bar body 1, so that the clamping sleeve 3 can be pressed into the base circle of the steel bar body 1 after the connecting sleeve 2 is deformed by pressure, thereby improving the clamping strength and effect between the clamping sleeve 3 and the steel bar body 1. In this embodiment, the side of the groove of the clamping slot 301 close to the middle side of the connecting sleeve 2 is inclined, which can strengthen the structural strength of the raised part between the clamping slots 301, avoid stress concentration during the pulling process of two steel bars, and reduce the risk of fracture of the raised part between the clamping slots 301.

[0077] Specifically, in this embodiment, a ferrule installation groove 201 is provided on the inner peripheral wall of the connecting sleeve 2, and a plurality of clamping ferrules 3 are detachably mounted in the ferrule installation groove 201. The shape of the ferrule installation groove 201 is adapted to the shape of the outer side surface of the clamping ferrule 3, and the clamping ferrule 3 is detachably mounted in the ferrule installation groove 201, which facilitates the manufacture of the connecting sleeve 2 and the clamping ferrule 3.

[0078] In this embodiment, since the connecting sleeve 2 needs to be formed after sliding and extrusion by the reducing ring 4, the hardness of the connecting sleeve is relatively low, and the clamping sleeve 3 needs to be pressed into the steel bar body 1, and its hardness is relatively high. The hardness of the conventional steel bar body 1 is usually around 20HRC to 30HRC.

[0079] Specifically, the hardness of the clamping sleeve 3 is greater than or equal to 40HRC. In this embodiment, the hardness of the clamping sleeve 3 reaches 40HRC, and the technician can also choose a material with a hardness of 50HRC to make the clamping sleeve 3 according to needs.

[0080] Embodiment 2:

[0081] like Figure 5 and Figure 6 As shown, based on the above embodiment 1, in this embodiment, a limiting protrusion 203 for limiting the sliding position of the reducing ring 4 is provided on the connecting sleeve 2;

[0082] The limiting protrusion 203 is arranged at the end of the connecting sleeve 2, and the tapered opening 202 is located at the other end of the connecting sleeve 2 away from the limiting protrusion 203;

[0083] The reducing ring 4 is sleeved on the conical opening 202 of the connecting sleeve 2. In this embodiment, by setting the limiting protrusion 203, the positioning of the reducing ring 4 can be facilitated. In this embodiment, the limiting protrusion 203 is annular and is integrally formed with the connecting sleeve 2. The technician can also weld the annular limiting protrusion 203 to the connecting sleeve 2.

[0084] The rest of the structure of this embodiment is the same as that of the above-mentioned embodiment 1 and will not be described again here.

[0085] Example 3

[0086] like Figure 7 and Figure 8 As shown, based on the above embodiment 1, in this embodiment, a limiting protrusion 203 for limiting the sliding position of the reducing ring 4 is provided on the connecting sleeve 2;

[0087] The limiting protrusion 203 is arranged at the middle position of the connecting sleeve 2, and both side ends of the connecting sleeve 2 are provided with a conical beam opening 202;

[0088] The two conical openings 202 of the connecting sleeve 2 are both provided with reducing rings 4 .

[0089] In this embodiment, the limiting protrusion 203 is in a circular ring shape and is arranged in the middle position of the connecting sleeve 2, and conical openings 202 are arranged at both ends of the connecting sleeve 2, and a reducing ring 4 is installed on the conical opening 202, so that the length of the connecting sleeve 2 slidably extruded by a single reducing ring 4 is halved, thereby improving the molding efficiency.

[0090] The rest of the structure of this embodiment is the same as that of the above-mentioned embodiment 1 and will not be described again here.

[0091] Example 4

[0092] like Fig. 9 and Fig.10 ,as well as Fig.11 As shown, in this embodiment, a plurality of the clamping sleeves 3 are integrally fixedly connected to the inner peripheral wall of the connecting sleeve 2;

[0093] A through-type wall groove 204 for reducing the diameter of the connecting sleeve 2 is provided on the inner peripheral wall thereof;

[0094] The shape of the through-type wall groove 204 is any one of U-shape, semicircle, trapezoid, rectangle and triangle;

[0095] The hardness of the connecting sleeve 2 is less than the hardness of the clamping sleeve 3 .

[0096] During the forming process of the connecting sleeve 2, the reducing ring 4 is still required to slide and extrude the connecting sleeve 2, driving the connecting sleeve 2 to shrink and deform before forming, so that the clamping sleeve 3 is pressed into the steel bar body 1 to form a positive locking fixed relationship.

[0097] By setting the through-type wall groove 204, multiple structural strength weak areas are actually artificially constructed in the circumferential direction of the connecting sleeve 2, so that after the connecting sleeve 2 is subjected to the sliding extrusion of the reducing ring 4, the two side walls of the through-type wall groove 204 are close to each other, so that the connecting sleeve 2 can be smoothly contracted, deformed and shaped. The shape used in this embodiment is as follows: Fig.11 As shown, it is a trapezoid. The technicians can also set its shape to other shapes such as U-shape, semicircle, rectangle, triangle, etc., which will not be repeated here.

[0098] In this embodiment, the integrated fixed connection between the clamping sleeve 3 and the connecting sleeve 2 adopts an integrated molding process. After molding, the inner ring is quenched to increase the hardness of the clamping sleeve so that it can bite into the steel bar body smoothly. Technicians can also use other methods such as welding to perform integrated fixed connection processing, which will not be repeated here.

[0099] The rest of the structure of this embodiment is the same as that of the above-mentioned embodiment 1 and will not be described again here.

[0100] Embodiment 5:

[0101] like Fig.12 and Fig.13 As shown, in this embodiment, a plurality of the clamping sleeves 3 are integrally fixedly connected to the inner circumferential wall of the connecting sleeve 2 .

[0102] The connecting sleeve 2 is provided with a limiting protrusion 203 for limiting the sliding position of the reducing ring 4;

[0103] The limiting protrusion 203 is arranged at the end of the connecting sleeve 2, and the tapered opening 202 is located at the other end of the connecting sleeve 2 away from the limiting protrusion 203;

[0104] The reducing ring 4 is sleeved on the conical opening 202 of the connecting sleeve 2.

[0105] The rest of the structure of this embodiment is the same as that of the above-mentioned embodiment 4 and will not be described again here.

[0106] Embodiment 6:

[0107] like Fig.14 and Fig.15 As shown, in this embodiment, a plurality of the clamping sleeves 3 are integrally fixedly connected to the inner circumferential wall of the connecting sleeve 2 .

[0108] The connecting sleeve 2 is provided with a limiting protrusion 203 for limiting the sliding position of the reducing ring 4;

[0109] The limiting protrusion 203 is arranged at the middle position of the connecting sleeve 2, and both side ends of the connecting sleeve 2 are provided with a conical beam opening 202;

[0110] The two conical openings 202 of the connecting sleeve 2 are both provided with reducing rings 4 .

[0111] The rest of the structure of this embodiment is the same as that of the above-mentioned embodiment 4 and will not be described again here.

[0112] Embodiment 7:

[0113] On the other hand, the present embodiment provides a connection method of a steel bar anti-detachment connection device, which is applicable to a steel bar anti-detachment connection device described in any one of the above embodiments 1 to 6, and comprises the following steps:

[0114] S1, connection preparation, install the reducing ring 4 on the tapered opening 202 of the connecting sleeve 2;

[0115] S2, the steel bars are in place, and then the two steel bar bodies 1 are inserted into the connecting sleeves 2;

[0116] S3, the connecting sleeve 2 is reduced in diameter, and the reducing ring 4 is driven to slide on the connecting sleeve 2 and squeeze the connecting sleeve 2 until the entire connecting sleeve 2 is completely reduced in diameter.

[0117] In step S3, the driving device for driving the reducing ring 4 can be hydraulic C-type pliers, hydraulic demolition pliers, riveting equipment and the like, and the operator can select the device according to the on-site construction conditions.

[0118] In step S2 of the present embodiment, after the two steel bar bodies 1 are inserted into the connecting sleeve 2, the positions of the two steel bar bodies 1 can be finely adjusted by rotating them to improve the clamping effect, increase the depth of the protruding part of the clamping groove 301 pressed into the base circular part of the steel bar body 1, and improve the clamping connection effect between the clamping sleeve 3 and the steel bar body 1.

[0119] The reducing ring 4 in this embodiment is specifically an anvil, and its cross section is a circular ring structure.

[0120] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A steel bar anti-detachment connection device, characterized in that: It comprises a connecting sleeve (2) for connecting two steel bar bodies (1), and a clamping sleeve assembly for biting into the steel bar body (1) and locking with it; The end of the connecting sleeve (2) is provided with a conical conical opening (202) for assisting the sliding forming of the connecting sleeve (2); The clamping sleeve assembly comprises a plurality of clamping sleeves (3) whose hardness is greater than that of the steel bar body (1); the plurality of clamping sleeves (3) are distributed in the connecting sleeve (2) in a gap-like manner along the circumference of the connecting sleeve (2); the clamping sleeves (3) and the connecting sleeve (2) are relatively fixed along the axial direction of the connecting sleeve (2); A plurality of clamping grooves (301) are provided on a side of the clamping sleeve (3) facing away from the connecting sleeve (2).

2. A steel bar anti-detachment connection device according to claim 1, characterized in that: It also includes a reducing ring (4) for forming the sliding connection sleeve (2), and the inner peripheral wall of the reducing ring (4) is provided with a conical closing opening (401) that is mutually compatible with the conical closing opening (202).

3. A steel bar anti-detachment connection device according to claim 2, characterized in that: The connecting sleeve (2) is provided with a limiting protrusion (203) for limiting the sliding position of the reducing ring (4); The limiting protrusion (203) is arranged at the end of the connecting sleeve (2), and the conical beam opening (202) is located at the other end of the connecting sleeve (2) away from the limiting protrusion (203); The reducing ring (4) is sleeved on the conical opening (202) of the connecting sleeve (2).

4. A steel bar anti-detachment connection device according to claim 2, characterized in that: The connecting sleeve (2) is provided with a limiting protrusion (203) for limiting the sliding position of the reducing ring (4); The limiting protrusion (203) is arranged at the middle position of the connecting sleeve (2), and both side ends of the connecting sleeve (2) are provided with a conical beam opening (202); The two conical beam openings (202) of the connecting sleeve (2) are both provided with reducing rings (4).

5. A steel bar anti-detachment connection device according to claim 1, characterized in that: The plurality of clamping sleeves (3) are evenly distributed along the circumference and axial direction of the connecting sleeve (2); The shape of the clamping sleeve (3) is fan-shaped, and the central angle R1 corresponding to the inner arc of the fan-shaped clamping sleeve (3) is smaller than the central angle R2 corresponding to the outer arc thereof.

6. A steel bar anti-detachment connection device according to claim 1, characterized in that: The clamping groove (301) of the clamping sleeve (3) has a corresponding clamping groove extension line in a spiral or circular shape; The longitudinal cross-section of the clamping slot (301) is any one of a U-shape, a rectangle or a triangle with a horizontal opening.

7. A steel bar anti-detachment connection device according to claim 6, characterized in that: The longitudinal cross-section of the clamping slot (301) is a U-shape with a horizontal opening; The clamping slot (301) is arranged at an angle on the side of the groove close to the middle of the connecting sleeve (2); The clamping groove (301) has a depth dimension greater than or equal to the height of the transverse ribs (101) and the longitudinal ribs of the steel bar body (1).

8. A steel bar anti-detachment connection device according to any one of claims 1 to 7, characterized in that: A plurality of the clamping sleeves (3) are integrally fixedly connected to the inner peripheral wall of the connecting sleeve (2); A through-type wall groove (204) for reducing the diameter of the connecting sleeve (2) is provided on the inner peripheral wall of the connecting sleeve (2); The shape of the through-type wall groove (204) is any one of a U-shape, a semicircle, a trapezoid, a rectangle, and a triangle; The hardness of the connecting sleeve (2) is smaller than the hardness of the clamping sleeve (3).

9. A steel bar anti-detachment connection device according to any one of claims 1 to 7, characterized in that: A ferrule mounting groove (201) is provided on the inner peripheral wall of the connecting sleeve (2), and a plurality of clamping ferrules (3) are detachably mounted in the ferrule mounting groove (201).

10. A steel bar anti-detachment connection device according to any one of claims 1 to 7, characterized in that: The hardness of the clamping sleeve (3) is greater than or equal to 40HRC.

Images