Steel bar connecting device
By using a combination technology of grouting sleeve and grouting plug at the steel bar connection, the problem of insufficient connection accuracy and sealing of the steel bar joints in the prior art is solved, and a more efficient bonding effect between steel bars and concrete is achieved.
Patent Information
- Application Number
- CN202420740528.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-11
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-04-11
AI Technical Summary
In some cases, the existing reinforced bar joint connection methods require high construction accuracy and are prone to leakage of slurry or insufficient slurry, which affects the bonding effect between the reinforced bar and concrete.
The grouting sleeve connection method is adopted, and a grouting plug is installed at both ends of the grouting sleeve. The amplitude of the steel bar hitting the wall is reduced by extrusion of the air bag, strengthening the sealing performance, and ensuring the compactness of the grouting material.
The construction accuracy and sealing of steel bar connections are improved, the occurrence of slurry leakage is reduced, the effective bond between steel bars and concrete is ensured, and the construction quality is improved.
Smart Images
Figure CN222862696U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of building construction, and in particular relates to a steel bar connecting device. Background Art
[0002] At present, in the construction process of construction projects, there are three main methods for connecting steel bar joints, namely binding connection, welding connection and mechanical connection. Moreover, the characteristics of each steel bar joint connection method are also different.
[0003] For tying lap joints: This is a way to transfer the stress of steel bars through the bonding force between steel bars and concrete. The advantage is that general steel bar workers can operate under any environmental conditions, no additional processing, installation and testing equipment is required, the construction speed is fast, and the quality is fully guaranteed. However, when the diameter of the tensile steel bar is greater than 28mm, the diameter of the compressive steel bar is greater than 32mm, or the longitudinal stress steel bars of axial tension and small eccentric tension rods, and the longitudinal stress steel bars in the structure directly bearing dynamic loads, tying lap joints should not be used.
[0004] The advantage of welding connection is that the price of welding joints is relatively cheap, and welding can be performed at any position within the range where joints are allowed; the disadvantage is that special construction equipment, materials and electricity are required, and energy consumption is the highest; it has strict requirements on personnel and construction environment, and cannot be used anytime and anywhere: for example, electroslag pressure welding can only be used for vertical steel bar connections, and flash butt welding and pneumatic welding can only be performed in processing plants and to connect steel bars of limited lengths; the quality cannot be fully guaranteed, and defective products are easily produced, resulting in a lot of waste.
[0005] As for mechanical connection methods, there are many methods such as straight thread connection, tapered thread connection and sleeve connection. There is no special unusable range for mechanical connection methods such as sleeve connection. Basically, it can be applied to most connection situations. The only thing that affects the connection effect is the connection quality problem itself. Utility Model Content
[0006] The utility model aims to provide a steel bar connection device, which adopts a grouting sleeve to form a connection with the steel bars, and further seals the steel bar connection to ensure the compactness of the grouting in the sleeve and the connection quality of the grouting sleeve.
[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is specifically as follows:
[0008] A steel bar connection device comprises a grouting sleeve, a grouting inlet, a grouting outlet and a spare inspection port arranged on the grouting sleeve, and steel bar connection ports are respectively arranged at both ends of the grouting sleeve; the steel bar connection ports are respectively connected to grouting plugs, each grouting plug comprises a base, a threaded connector arranged on the base and adapted to the steel bar connection port, a retaining ring is arranged in the base, an air bag is arranged between the retaining ring and the threaded connector, and an air head is arranged outside the base, and the air head is connected to the air bag.
[0009] Furthermore, a locking nut is connected inside the base, and the locking nut abuts against the retaining ring.
[0010] Furthermore, a threaded hole matching the size of the steel bar is provided in the middle of the locking nut.
[0011] Furthermore, there are two spare inspection ports, which are respectively arranged on the sides of the pulp inlet and the pulp outlet.
[0012] Furthermore, the spare inspection ports are connected to each other and form a channel with the grouting sleeve.
[0013] Furthermore, a sealing gasket is provided in the spare inspection port, and a blocking nut is provided at the spare inspection port.
[0014] Compared with the prior art, the utility model has the following advantages: the utility model adopts the connection mode of grouting sleeve, and the grouting sleeve connection technology has the advantages of reliable performance, wide applicability, and easy installation when connecting steel bars. In addition, the utility model is also provided with grouting plugs connected to both ends of the grouting sleeve to enhance the sealing effect between the grouting sleeve and the steel bar, and avoid the problem of grouting connection failure.
[0015] Secondly, the utility model is provided with a spare inspection port, and there are two spare inspection ports, which serve as an inlet and an outlet respectively, for later detection of the compactness of the sleeve after grouting, and for later supplementary grouting operations, and the structure is more flexible. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0017] Figure 1 It is a structural schematic diagram of a steel bar connecting device provided by the utility model.
[0018] Figure 2 yes Figure 1 A local enlarged schematic diagram of point A in the middle.
[0019] Figure numerals: 1. grouting sleeve; 2. grouting outlet; 3. spare inspection port; 4. steel bar connection port; 5. base; 6. threaded connector; 7. grouting plug; 8. retaining ring; 9. inflation head; 10. sealing nut; 11. grouting inlet. DETAILED DESCRIPTION
[0020] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0022] In the description of the present utility model, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when used. It is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model.
[0023] In addition, the terms “first”, “second”, “third”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.
[0024] In addition, the terms "horizontal", "vertical", "overhanging", etc. do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0025] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connection", 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 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.
[0026] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.
[0027] like Figure 1-Figure 2 As shown, a steel bar connecting device includes a grouting sleeve 1, a grouting port 11, a grouting port 2 and a spare inspection port 3 arranged on the grouting sleeve 1, and steel bar connecting ports 4 are respectively arranged at both ends of the grouting sleeve 1; the steel bar connecting ports 4 are respectively connected to grouting plugs 7, each grouting plug 7 includes a base 5, a threaded connector 6 arranged on the base 5 and adapted to the steel bar connecting port 4, a retaining ring 8 is arranged inside the base 5, an air bag arranged between the retaining ring 8 and the threaded connector 6, an air head 9 is arranged outside the base 5, and the air head 9 is connected to the air bag.
[0028] Compared with the prior art, the connection method of the grouting sleeve 1 is already a common technology in the prior art. Specifically, during the operation, two steel bars to be connected need to be inserted into the sleeve from both ends of the sleeve, and then concrete slurry is filled into the grouting sleeve 1, and the concrete slurry is waited for to solidify to realize the fastening connection between the two sections of steel bars. However, in the prior art, the main problem is that this type of grouting sleeve 1 has high construction accuracy requirements for the ends of the two steel bars. When the steel bars at both ends are connected using the grouting sleeve 1, due to problems such as insufficient construction accuracy, the steel bars in the grouting sleeve 1 at the connection of the steel bars on both sides are often misaligned or touch the wall, resulting in leakage or insufficient filling of the slurry, which leads to a decrease in the bonding and bite effect between the steel bars and the grouting material, seriously affecting the construction quality. In the utility model, grouting plugs 7 are provided at both ends of the grouting sleeve 1 to enhance the sealing performance. On the one hand, the enhanced sealing can reduce the occurrence of grout leakage and make the slurry in the grouting sleeve 1 denser after solidification; on the other hand, the extrusion of the inflatable bag can reduce the amplitude of the dislocation of the steel bar hitting the wall, thereby ensuring the bite effect of the grouting material.
[0029] The base 5 is also connected with a locking nut, which abuts against a retaining ring 8. The retaining ring 8 is used to limit the expansion of the airbag after inflation, to prevent the airbag from dislocating and clamping the steel bar. The locking nut is provided with a threaded hole in the middle of the locking nut that matches the size of the steel bar, and the connection can be completed by passing the steel bar through the locking nut, and the overall operation is simple.
[0030] There are two spare inspection ports 3, which are respectively arranged on the sides of the slurry inlet 11 and the slurry outlet 2. The spare inspection ports 3 are connected to each other and form a channel with the grouting sleeve 1. A sealing gasket is arranged in the spare inspection port 3, and a blocking nut 10 is arranged at the spare inspection port 3. The utility model is also provided with a spare inspection port 3, and the spare inspection port 3 is closed by the blocking nut 10 during grouting to prevent the entry of grouting material. After the grouting is completed, the grouting effect can be inflated and tested through the spare inspection port, and once the slurry filling is not dense enough and the original grouting port is blocked, the grouting can be supplemented again through the other inspection port to ensure the overall grouting bonding effect.
[0031] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims
1. A steel bar connection device, characterized in that: The invention comprises a grouting sleeve (1), a grouting inlet (11), a grouting outlet (2) and a spare inspection port (3) arranged on the grouting sleeve (1), and steel bar connection ports (4) are respectively arranged at both ends of the grouting sleeve (1); the steel bar connection ports (4) are respectively connected to grouting plugs (7), and each grouting plug (7) comprises a base (5), a threaded connector (6) arranged on the base (5) and adapted to the steel bar connection port (4), a retaining ring (8) is arranged inside the base (5), an air bag arranged between the retaining ring (8) and the threaded connector (6), and an air bag (9) is arranged outside the base (5), and the air bag (9) is connected to the air bag.
2. The steel bar connection device according to claim 1, characterized in that: A locking nut is also connected inside the base (5), and the locking nut abuts against the retaining ring (8).
3. The steel bar connection device according to claim 2, characterized in that: A threaded hole matching the size of the steel bar is arranged in the middle of the locking nut.
4. The steel bar connection device according to claim 1, characterized in that: There are two standby inspection ports (3), which are respectively arranged on the sides of the pulp inlet (11) and the pulp outlet (2).
5. The steel bar connection device according to claim 4, characterized in that: The spare inspection ports (3) are connected to each other and form a channel with the grouting sleeve (1).
6. The steel bar connection device according to claim 4, characterized in that: A sealing gasket is arranged inside the spare inspection port (3), and a blocking nut (10) is arranged on the spare inspection port (3).