Connecting sleeve and reinforcing steel bar connection conversion device comprising same
By using connecting sleeves and support balls in reinforcement connections, combining connecting rods and elastic elements, the existing reinforcement connection methods are solved, and efficient and reliable reinforcement connections are achieved.
Patent Information
- Application Number
- CN202421834740.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-07-31
AI Technical Summary
The existing reinforcement connection methods have problems such as complex on-site operation, high labor costs, low construction efficiency and unsolid connections, especially when prefabricated piles are connected to the concrete support.
A connecting sleeve is adopted, including a buckle cylinder and a support ball. The locking plate is opened by supporting balls to achieve the connection of steel bars of different structures of the same type, and through the connecting rod and elastic elements, the steel bars are guaranteed to be uniform in stress and the connection quality.
It reduces the on-site construction strength, improves the quality and reliability of connections, simplifies the operation process, reduces labor costs, and improves construction efficiency.
Smart Images
Figure CN222924021U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of building components in the field of construction engineering, in particular to a connecting sleeve and a steel bar connecting conversion device comprising the connecting sleeve. Background Art
[0002] During the construction of pile foundations in construction projects, due to the large changes in the strata at the construction site, precast piles often need to be cut before the top of the pile meets the design elevation requirements. In order to connect the precast piles to the concrete cap, after the top of the precast piles is cut, the main reinforcement of the original precast piles needs to be exposed for a certain length to connect with the main reinforcement of the cap. It is necessary to connect the ends of different types of steel bars or different diameter steel bars or the same type but different structures of steel bars of two different components before the precast piles and concrete caps can be connected. There are currently two commonly used methods for connecting steel bars. One method is traditional welding, which has obvious disadvantages, complex on-site operations, high labor costs, low construction efficiency, and difficult to ensure project quality. It has been gradually abandoned in recent years. The other method is mechanical connection, which uses a low-cost connection device to achieve simple connection of steel bars on site, greatly improving construction efficiency and controllable construction quality.
[0003] The connection scheme disclosed in the prior art uses a steel nut and a ring card to connect the ends of the steel bars. In actual operation, the installation method is adopted from bottom to top. First, the clip is placed in the sleeve, then the spring is placed, and finally the upper steel bar is connected to the sleeve through a thread. Since the length of the upper steel bar is greater than 1 meter and it is also bent, two people are required to cooperate in the tightening process. One person assists the steel bar or sleeve with his hands, and the other person tightens the sleeve or steel bar. The operation is time-consuming and laborious. Even if some technologies are installed from top to bottom, during the installation process, when the lower steel bar enters the upper clip, the clip in the sleeve will be misaligned up and down, resulting in the inability to clamp the steel bar, resulting in a loose connection. Utility Model Content
[0004] In view of the deficiencies in the prior art, the utility model provides a connecting sleeve and a steel bar connection conversion device including the connecting sleeve, which realizes the connection of steel bars of the same type but different structures and the connection of steel bars with clamping parts.
[0005] The utility model achieves the above technical purpose through the following technical means.
[0006] A connecting sleeve includes a buckle tube and a support ball; the buckle tube includes a locking part and a connecting part, the locking part and the connecting part are integrally formed, the locking part is in a truncated cone shape, including a plurality of locking plates, and the plurality of locking plates form a hollow truncated cone, a support ball is arranged inside the hollow truncated cone, and the diameter of the support ball is slightly larger than the inner diameter of the hollow truncated cone, and is used to prop open the locking plate.
[0007] In the above solution, the inner diameters of the hollow truncated cones formed by the locking parts are equal, and the inner surface of the locking piece is provided with threads or teeth.
[0008] In the above solution, the support ball is a steel ball.
[0009] A steel bar connection conversion device for a connecting sleeve, comprising a lower lock cylinder, a connecting rod, and an elastic element; the locking part of the fastening cylinder is placed downward in the lower lock cylinder, the elastic element is arranged above the connecting part of the fastening cylinder, the second steel bar is connected to the locking part, the lower end of the connecting rod is connected to the lower lock cylinder, a support ball is arranged between the second steel bar and the connecting rod, and the upper end of the connecting rod is connected to the first steel bar.
[0010] In the above solution, the support ball is tangent to the connecting rod and the second steel bar.
[0011] In the above solution, the elastic element is an axially hollow elastic element, and the inner diameter of the elastic element is larger than the diameter of the support ball.
[0012] In the above solution, the connecting rod is a solid structure or a hollow structure with external threads, and the connecting rod is threadedly connected to the first steel bar in the upper lock cylinder, and the first steel bar is connected inside the upper lock cylinder.
[0013] In the above solution, the lower part of the connecting rod is provided with external threads, and the upper part is provided with internal threads, and the connecting rod is connected to the first steel bar through the internal threads.
[0014] In the above solution, a second threaded section and a locking section are provided on the inner side of the lower lock cylinder, wherein the locking section is matched with the connecting sleeve.
[0015] In the above solution, the cross section of the locking section is a V-shaped structure, and the included angle between the outer side of the V-shaped structure and the horizontal line is β, 60° ≤ β < 90°.
[0016] In the above solution, a gap is left between the lower end of the connecting rod and the upper end of the fastening cylinder.
[0017] The beneficial effects of the present invention are as follows:
[0018] 1. By arranging a support ball (expanding piece) inside the fastening cylinder in the present invention, the assembly work is placed in the processing factory, avoiding a large amount of on-site construction operations, reducing the on-site construction intensity, and thus ensuring the connection quality. The support ball is set as a sphere, and no matter from which direction the force is applied, the distance between the sphere and the locking piece is always the same during the movement of the sphere, and jamming will not occur.
[0019] 2. In the present invention, the connecting rod positions and presses the second steel bar and the fastening cylinder, so that the forces on each steel bar are uniform, ensuring the neat connection quality.
[0020] 3. In the present utility model, by adjusting the length of the outer locking section of the lower lock cylinder and providing a through-long hollow section in the connecting rod, the installation error of the lower reinforcing bars is significantly reduced. By closely attaching the connecting rod to the top of the lower reinforcing bars, a pre-tightening force is generated on the locking piece to ensure the engagement length of the connecting reinforcing bars of the precast component in the tapered sleeve, thereby ensuring the connection quality and reliability.
[0021] 4. In the present utility model, the connecting rod is provided in a solid structure with threads, a hollow structure with threads, and a hollow structure with internal and external threads according to actual requirements, so as to meet different usage scenarios. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a schematic diagram of a connecting sleeve;
[0023] Figure 2 Figure 1 It is a schematic diagram excluding the support ball;
[0024] Figure 3 It is Figure 2 a schematic diagram of other view directions of
[0025] Figure 4 It is a schematic diagram before the installation of the structure of a steel bar connection conversion device including a connecting sleeve involved in Embodiment 1;
[0026] Figure 5 It is a schematic diagram after the installation of the steel bar conversion connection device in Embodiment 1;
[0027] Figure 6 It is Figure 4 a schematic diagram of the connecting rod involved in
[0028] Figure 7 It is Figure 6 a three-dimensional schematic diagram of
[0029] Figure 8 It is Figure 4 a schematic diagram of the lower lock cylinder involved in
[0030] Figure 9 It is a schematic diagram of the first steel bar structure involved in Embodiment 1;
[0031] Figure 10 It is Figure 4 a schematic diagram of the upper lock cylinder involved in
[0032] Figure 11 It is a schematic diagram after the installation of the structure of a steel bar connection conversion device including a connecting sleeve involved in Embodiment 2;
[0033] Figure 12 It is a schematic diagram of the connecting rod involved in Embodiment 2;
[0034] Figure 13 Schematic diagram of the connecting rod involved in Embodiment 3;
[0035] Figure 14 Schematic diagram after the structure of the steel bar connection conversion device in Embodiment 3 is installed.
[0036] Reference numerals:
[0037] 1 - Buckle cylinder; 1 - 1 - Locking piece; 2 - Support ball; 3 - Lower lock cylinder; 3 - 1 - Second threaded section; 3 - 2 - Locking section; 4 - Connecting rod; 4 - 1 - Hollow part; 4 - 2 - Thread; 5 - Upper lock cylinder; 5 - 1 - First threaded section; 5 - 2 - Through hole; 6 - First steel bar; 6 - 1 - Upset head; 7 - Second steel bar; 8 - Elastic element. Detailed implementation manners
[0038] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.
[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "axial", "radial", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They 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 thus should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.
[0040] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected to", "fixed", etc. 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0041] A connecting sleeve, comprising a buckle cylinder 1 and a support ball 2; the buckle cylinder 1 includes a locking part and a connecting part, the locking part and the connecting part are integrally formed, the locking part is frustum-shaped, including several locking pieces 1-1, several locking pieces 1-1 form a hollow frustum, and a support ball 2 is arranged inside the hollow frustum. The diameter of the support ball 2 is slightly larger than the inner diameter of the hollow frustum, and is used to expand the locking pieces 1-1.
[0042] In the present utility model, the connecting part is an annular structure and is connected to the locking part through a rib plate.
[0043] In the present utility model, the inner surface of the locking piece 1-1 is provided with threads or teeth, and the threads or teeth are used to lock with the second steel bar 7.
[0044] Embodiment 1
[0045] A connecting sleeve, comprising a buckle cylinder 1 and a support ball 2; the buckle cylinder 1 is conical, including several locking pieces 1-1, several locking pieces 1-1 form a hollow cone, and a support ball 2 is arranged inside the hollow cone.
[0046] A steel bar connection conversion device including a connecting sleeve, comprising an upper lock cylinder 5, a lower lock cylinder 3, a buckle cylinder 1 and a connecting rod 4. A upset head 6-1 is arranged at the end of the first steel bar 6, and there is no protrusion or upset head on the second steel bar 7. The buckle cylinder 1 is frustum-shaped, and a plurality of locking pieces 1-1 form a hollow frustum. The locking pieces 1-1 have a certain elasticity and can move radially (i.e., expand and contract). A support ball 2 is arranged inside the locking piece 1-1 of the buckle cylinder 1. The main function of the support ball 2 is to expand the locking piece 1-1 in advance, so that the diameter of the opening supported by the locking piece 1-1 is slightly larger than the diameter of the second steel bar 7; the support ball 2 is pre-placed in the buckle cylinder 1, the buckle cylinder 1 assembled with the support ball is placed in the lower lock cylinder 3, then the elastic element 8 is placed above the buckle cylinder 1, and finally the connecting rod 4 is threadedly connected to the lower lock cylinder 3 to form a lower lock cylinder connection assembly; during connection, after the upper lock cylinder 5 is connected to the first steel bar 6 with a upset head 6-1 or a protrusion, the assembled lower lock cylinder connection assembly is inserted into the second steel bar 7. During the insertion process, the top of the second steel bar 7 presses against the support ball 2 arranged on the upper part of the buckle cylinder 1. Under the action of an external force, the support ball 2 moves upward and closely adheres to the top of the second steel bar 7 and the bottom of the connecting rod 4. After the support ball 2 is completely pushed open, the locking piece 1-1 tightly locks the second steel bar 7, thereby realizing the connection between the second steel bar 7 and the buckle cylinder 1. The buckle cylinder in the lower lock cylinder connection assembly will move upward as the second steel bar penetrates deeper. At this time, the elastic element is compressed. After the insertion is completed, the elastic element resets and gives a downward elastic force to the buckle cylinder. The buckle cylinder moves downward, and the lower end of the buckle cylinder and the lower lock cylinder achieve tight fit, thereby realizing reliable connection.
[0047] The locking piece 1-1 has a certain elasticity and can move radially; the diameter of the support ball 2 is slightly larger than the inner diameter of the hollow frustum, and is used to expand the locking piece 1-1; the diameter of the support ball 2 is slightly larger than 0 and less than 2 mm; the support ball 2 is a steel ball, which has high hardness and a smooth surface. After the second steel bar is inserted into the locking piece, the steel ball can smoothly slide up without getting stuck inside the locking piece, resulting in failure to be installed in place.
[0048] The upper lock cylinder 5 is provided with a through hole 5-2 and a first threaded section 5-1. The lower lock cylinder 3 is provided with a second threaded section 3-1 and a locking section 3-2. The cross section of the locking section 3-2 is in a "V" shape and matches the outer surface of the buckle cylinder 1.
[0049] Both ends of the connecting rod 4 are provided with threads for connecting with the internal threads of the upper lock cylinder 5 and the lower lock cylinder 3. An installation part is arranged in the middle of the connecting rod 4. When installing with tools such as a wrench, this position is the clamping part of the tool, and at the same time, it also serves as a positioning when the connecting rod and the lower lock cylinder are connected to prevent the connecting rod 4 from being installed too far; during installation, the installation tool can be fixed to the installation part of the lower lock cylinder 3, and at the same time, the installation tool is fixed to the installation part of the upper lock cylinder and then the upper lock cylinder 5 is rotated to realize the fastening of the upper lock cylinder 5 and the lower lock cylinder 3.
[0050] After the second steel bar 7 is connected to the locking piece 1-1 and the lower lock cylinder 3, one end of the second steel bar 7 exposes the large end face of the locking piece.
[0051] The buckle cylinder 3 is composed of at least two locking pieces 1-1. A number of annular locking pieces 1-1 form a hollow frustum with a larger upper part and a smaller lower part. The included angle between the outer sides of adjacent annular locking pieces 1-1 is not less than 45°.
[0052] The included angle β between the outer side of the locking section 3-2 and the horizontal line is greater than 60°, specifically 60° ≤ β < 90°. When β is too small, the strength of the locking piece is too small to lock the steel bar. When β is too large, the locking piece is not easy to expand, and at the same time, it also consumes more materials.
[0053] The elastic element 8 is an axially hollow elastic element. The elastic element 8 can be a spring or a hollow elastic washer. The inner diameter of the elastic element 8 is larger than the diameter of the support ball 2. The elastic element 8 is supported on the buckle cylinder 1, and its inner diameter is larger than the inner diameter of the support ball to ensure that the support ball will move upward synchronously during the insertion of the second steel bar 7.
[0054] Embodiment 2
[0055] The connecting rod 4 is a full-length hollow structure. During connection, the upper locking cylinder 5 is connected to the first steel bar 6 with a upset head 6-1 in advance. Then, through the connecting rod 4, the lower locking cylinder 3 and the buckle cylinder 1 and the elastic element 8 arranged inside the lower locking cylinder 3 are integrated into a whole. Then, the second steel bar 7 is installed inside the lower locking cylinder 3. When installing the second steel bar 7, the second steel bar 7 is inserted from the installation opening inside the lower locking cylinder 3. During the insertion process, the top of the second steel bar 7 pushes open the support ball 2 arranged on the upper part of the buckle cylinder 1. Under the action of external force, the position of the support ball 2 moves upward and enters the hollow part of the connecting rod 4 and is tangent to the hollow part, preventing the support ball from shaking left and right when the upper part of the second steel bar is uneven. When the support ball 2 is closely attached to the top of the second steel bar 7, it indicates that the second steel bar 7 has been installed in place. This method can effectively reduce the length of the lower locking cylinder 3 and further save materials. After the support ball 2 is completely pushed open, the locking piece 1-1 tightly locks the second steel bar 7, thus realizing the connection between the second steel bar 7 and the buckle cylinder 1. The buckle cylinder in the lower locking cylinder connection assembly will move upward as the second steel bar penetrates deeper. At this time, the elastic element is compressed. After the insertion is completed, the elastic element resets and gives the buckle cylinder a downward elastic force, and the buckle cylinder moves downward, and the lower end of the buckle cylinder and the lower locking cylinder achieve a tight fit, thus realizing a reliable connection. During the construction process, due to the different levels of installers, the height of the second steel bar 7 exposed outside the locking piece 1-1 is inconsistent. A certain space needs to be left between the connecting rod 4 and the buckle cylinder 1. After the second steel bar 7 extends out of the locking section 3-2 of the lower locking cylinder 3, it closely adheres to the top of the second steel bar 7 exposed outside the locking piece, and the inner close-fitting surfaces of the locking piece 1-1 and the lower locking cylinder 3 are stressed, thus preventing it from loosening up and down and affecting the connection quality. Others are the same as in Embodiment 1.
[0056] Embodiment 3
[0057] When the first steel bar 6 does not have a upset head, the thread provided at the bottom of the first steel bar 6 can be matched with the threaded hollow structure of the connecting rod 4, that is, matched with the hollow part 4-1 and the thread 4-2. At this time, the overall connection structure does not require the upper locking cylinder 5, and other structures are the same as in Embodiment 2.
[0058] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0059] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model without departing from the principle and spirit of the present utility model.
Claims
1. A connecting sleeve, characterized in that: It includes a buckle tube and a supporting ball; the buckle tube includes a locking part and a connecting part, the locking part and the connecting part are integrally formed, the locking part is in the shape of a truncated cone, including several locking plates, and several locking plates form a hollow truncated cone. A supporting ball is arranged inside the hollow truncated cone, and the diameter of the supporting ball is slightly larger than the inner diameter of the hollow truncated cone, which is used to prop open the locking plate.
2. The connecting sleeve according to claim 1, characterized in that: The inner diameters of the hollow cones formed by the locking parts are equal, and the inner surfaces of the locking pieces are provided with threads or locking teeth.
3. A steel bar connection conversion device comprising the connection sleeve according to any one of claims 1 to 2, characterized in that: It includes a lower locking cylinder, a connecting rod and an elastic element; the locking part of the buckle cylinder is placed downward in the lower locking cylinder, the elastic element is arranged above the connecting part of the buckle cylinder, the second steel bar is connected to the locking part, the lower end of the connecting rod is connected to the lower locking cylinder, the supporting ball is arranged between the second steel bar and the connecting rod, and the upper end of the connecting rod is connected to the first steel bar.
4. The steel bar connection conversion device according to claim 3, characterized in that: The supporting ball is tangent to the connecting rod and the second steel bar.
5. The steel bar connection conversion device according to claim 3, characterized in that: The elastic element is an axial hollow elastic element, and the inner diameter of the elastic element is larger than the diameter of the supporting ball.
6. The steel bar connection conversion device according to claim 3, characterized in that: The connecting rod is a solid structure or a hollow structure with an external thread. The connecting rod and the locking cylinder are threadedly connected to the first steel bar, and the first steel bar is connected in the locking cylinder.
7. The steel bar connection conversion device according to claim 3, characterized in that: The lower part of the connecting rod is provided with an external thread, and the upper part is provided with an internal thread, and the connecting rod is connected to the first steel bar through the internal thread.
8. The steel bar connection conversion device according to claim 3, characterized in that: A second threaded section and a locking section are provided on the inner side of the lower locking cylinder, wherein the locking section cooperates with the connecting sleeve.
9. The steel bar connection conversion device according to claim 8, characterized in that: The cross section of the locking section is a V-shaped structure, and the angle between the outer side of the V-shaped structure and the horizontal line is β, 60°≤β<90°.
10. The steel bar connection conversion device according to claim 3, characterized in that: A gap is left between the lower end of the connecting rod and the upper end of the buckle tube.