Rapid connecting device for underwater cast-in-place pile reinforcement cage main reinforcements

Abstract

The utility model provides an underwater cast-in-place pile reinforcement cage main reinforcement quick connecting device which comprises nuts, a sleeve and a connecting rod, the two nuts are respectively connected with screwed joints of upper and lower corresponding reinforcements, the sleeve comprises two semicircular sleeve units, the left and right sides of the outer wall of the sleeve are respectively provided with a connecting rod reserved groove, and the connecting rod reserved groove is connected with the two semicircular sleeve units. One half of each connecting rod preformed groove is formed in one semicircular sleeve unit, and the other half of each connecting rod preformed groove is formed in the other semicircular sleeve unit; the connecting rods are embedded in the corresponding connecting rod reserved grooves, and the two semicircular sleeve units are connected in a mortise and tenon mode. An upper inner cavity, a middle inner cavity and a lower inner cavity are sequentially arranged on the inner side of the sleeve from top to bottom, the diameter of the middle inner cavity is matched with the nuts, the two nuts are nested in the middle inner cavity, and the diameter of the upper inner cavity and the diameter of the lower inner cavity are matched with the diameter of a steel bar. The device is simple in structure and easy to operate, can ensure that the threaded joint of the steel bar is not rusted, can enable the joint of the steel bar to be positioned in the middle of the sleeve, and simultaneously ensures the integrity and the connection strength of the sleeve.

Description

[Technical field]

[0001] The utility model relates to the field of pile foundation engineering, in particular to a main reinforcement quick connection device for an underwater cast-in-place pile reinforcement cage. [Background technology]

[0002] The steel cage of underwater bored pile is an important part of bored pile construction. It is mainly composed of steel bars. The diameter, quantity, spacing and arrangement of the steel bars will vary according to the diameter of the bored pile and the design requirements. The main function of the steel cage is to enhance the bearing capacity and seismic performance of the concrete bored pile.

[0003] In the construction process of underwater cast-in-place piles, the production and installation of steel cages are very critical steps. First, the steel cage needs to be made according to the design requirements to ensure that its size and shape meet the regulations. Then, the steel cage is hoisted into the hole at the construction site, and its verticality and position are kept accurate. Finally, concrete is poured around the steel cage to form a complete cast-in-place pile.

[0004] It should be noted that during the construction of underwater bored piles, due to the complexity and uncertainty of the construction environment, a series of technical measures need to be taken to ensure the quality of the production and installation of the steel cage, such as using appropriate lifting equipment and processes, controlling the concrete pouring speed and pressure, etc.

[0005] At present, in the existing technology, the main reinforcement connection of the steel cage of underwater bored piles is basically connected by sleeve connection. The construction efficiency of sleeve connection is slow, and a large construction space is required. It must be constructed on site. Since it cannot be installed in time after production is completed, rust will occur at the thread, making installation difficult. It is difficult to ensure that the steel bar joint is located in the middle of the sleeve and ensure the connection strength when using the sleeve. [Utility Model Content]

[0006] The technical problem to be solved by the utility model is to provide a quick connection device for the main reinforcement of an underwater cast-in-place pile reinforcement cage, which has a simple structure and is easy to operate, can ensure that the threaded joints of the reinforcement are not corroded, can make the joints of the reinforcement located in the middle of the sleeve, and at the same time ensure the integrity and connection strength of the sleeve.

[0007] The utility model is achieved in this way:

[0008] A quick connection device for main reinforcement of an underwater cast-in-place pile reinforcement cage, comprising a nut, a sleeve and a connecting rod, wherein the nut has two nuts, which are respectively threadedly connected to the threaded joints of the corresponding reinforcement bars at the upper and lower ends, and the sleeve comprises two semicircular sleeve units, which are enclosed by the two semicircular sleeve units to form the sleeve; the left and right sides of the outer wall of the sleeve are respectively provided with connecting rod reserved grooves, and the shape of the connecting rod reserved grooves matches the connecting rod; half of each connecting rod reserved groove is provided on one of the semicircular sleeve units, and the other half is provided on the other semicircular sleeve unit; each connecting rod is embedded in the corresponding connecting rod reserved groove, and the two semicircular sleeve units are connected by mortise and tenon joints;

[0009] The inner side of the sleeve is provided with an upper inner cavity, a middle inner cavity and a lower inner cavity from top to bottom in sequence. The diameter of the middle inner cavity is smaller than that of the upper inner cavity and the lower inner cavity. The diameter of the middle inner cavity matches that of the nut. The nut is nested in the middle inner cavity. The diameters of the upper inner cavity and the lower inner cavity match those of the steel bar.

[0010] Furthermore, there are four connecting rods, which are arranged in groups of two each and are embedded in corresponding numbers of connecting rod reserved grooves on the left and right sides of the outer wall of the sleeve.

[0011] Furthermore, the connecting rod includes an arc-shaped rod and two end pieces, the height of each end piece is greater than the height of the arc-shaped rod, and the two end pieces are respectively arranged at two ends of the arc-shaped rod to form a wedge-shaped fastener.

[0012] Furthermore, the arc-shaped rod and the two end pieces are integrally formed.

[0013] The advantages of the utility model are:

[0014] The nut connected to the steel bar threaded joint provided by the utility model can be installed in the factory and hoisted to the site for installation together with the steel bar cage, which can ensure that the steel bar threaded joint is not corroded. The inner cavity of the sleeve adopts a form of large middle part and small two ends. The large middle cavity, i.e., the middle inner cavity, is used to nest the nut connected to the steel bar threaded joint. The small cavities, i.e., the upper inner cavity and the lower inner cavity, are nested on the steel bar. The left and right halves of the semicircular sleeve unit are connected and fixed by mortise and tenon joints through a wedge-shaped fastener connecting rod, which can ensure that the joint of the steel bar is located in the middle of the sleeve, while ensuring the integrity and connection strength of the sleeve.

Brief Description of the Drawings

[0015] The present invention will be further described below in conjunction with the embodiments with reference to the accompanying drawings.

[0016] Figure 1 The utility model discloses an exploded view of a main reinforcement quick connection device of an underwater cast-in-place pile reinforcement cage.

[0017] Figure 2This is an exploded view from another perspective of a main reinforcement quick connection device for an underwater cast-in-place pile reinforcement cage of the utility model.

[0018] Figure 3 The utility model is a schematic diagram of the semicircular sleeve unit structure of a main reinforcement quick connection device for an underwater cast-in-place pile reinforcement cage. [Specific implementation method]

[0019] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings and specific implementation methods. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like 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, and do 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 invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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.

[0021] See also Figures 1 to 3 As shown, a quick connection device for main reinforcement of an underwater cast-in-place pile reinforcement cage of the utility model comprises a nut 1, a sleeve 2 and a connecting rod 3, wherein the nut 1 has two, which are respectively threadedly connected with the threaded joints 41 of the corresponding steel bars 4 at the upper and lower ends, and the sleeve 2 comprises two semicircular sleeve units 21, and the two semicircular sleeve units 21 enclose the sleeve 2; the left and right sides of the outer wall of the sleeve 2 are respectively provided with connecting rod reserved grooves 22, and the shape of the connecting rod reserved grooves 22 matches the connecting rod 3; half of each connecting rod reserved groove 22 is provided on one of the semicircular sleeve units 21, and the other half is provided on the other semicircular sleeve unit 21; each connecting rod 3 is embedded in the corresponding connecting rod reserved groove 22, and the two semicircular sleeve units 21 are connected by mortise and tenon joints;

[0022] The inner side of the sleeve 2 is provided with an upper inner cavity 23, a middle inner cavity 24 and a lower inner cavity 25 from top to bottom. The diameter of the middle inner cavity 24 is smaller than that of the upper inner cavity 23 and the lower inner cavity 25. The diameter of the middle inner cavity 24 matches that of the nut 1. The nut 1 is nested in the middle inner cavity 24. The diameters of the upper inner cavity 23 and the lower inner cavity 25 match those of the steel bar 4.

[0023] In a specific implementation, a preferred embodiment is as follows: there are four connecting rods 3 , which are arranged in groups of two each and are embedded in corresponding numbers of connecting rod reserved grooves 22 on the left and right sides of the outer wall of the sleeve 2 .

[0024] In a specific implementation, a preferred embodiment is as follows: the connecting rod 3 includes an arc-shaped rod 31 and two end pieces 32, the height of each end piece 32 is greater than the height of the arc-shaped rod 31, and the two end pieces 32 are respectively arranged at the two ends of the arc-shaped rod 32 to form a wedge-shaped fastener.

[0025] In a specific implementation, a preferred embodiment is that the arc rod 31 and the two end pieces 32 are integrally formed.

[0026] In another embodiment of the present invention, the installation process is as follows:

[0027] In the factory, the nut 1 can be threadedly connected with the threaded joint 41 on each steel bar 4 of the steel cage, and then the steel cage can be directly transported to the construction site; then the nuts 1 of the upper and lower groups of steel cages are connected by hoisting, and then the two semicircular sleeve units 21 of the sleeve 2 are used to cover the nut 1, and finally the four groups of connecting rods 3 are embedded in the corresponding connecting rod reserved grooves 22, and the two semicircular sleeve units 21 are fixed by mortise and tenon joints.

[0028] In summary, the utility model sets a threaded joint 41 at the end of the steel bar 4 of the steel cage, and then connects the threaded joint 41 of the steel bar 4 through the nut 1, so that the force of the steel bar 4 is transmitted to the nut 1; then the upper and lower steel bars 4 are connected together through the sleeve 2, and the nut 1 is embedded in the inner cavity 24 of the sleeve 2, and at the same time, the inner diameters of the upper inner cavity 23 and the lower inner cavity 25 of the sleeve 2 are the same as the diameter of the steel bar 4, and the inner diameter of the middle inner cavity 24 matches the nut 1, and the downward pulling force during the steel bar lifting process is transmitted through the inner diameter difference; finally, the connecting rod 3 is embedded in the reserved groove 22 of the connecting rod member to ensure the integrity of the sleeve.

[0029] The nut connected to the steel bar threaded joint provided by the utility model can be installed in the factory and hoisted to the site for installation together with the steel bar cage, which can ensure that the steel bar threaded joint is not corroded. The inner cavity of the sleeve adopts a form of large middle part and small two ends. The large middle cavity, i.e., the middle inner cavity, is used to nest the nut connected to the steel bar threaded joint. The small cavities, i.e., the upper inner cavity and the lower inner cavity, are nested on the steel bar. The left and right halves of the semicircular sleeve unit are connected and fixed by mortise and tenon joints through a wedge-shaped fastener connecting rod, which can ensure that the joint of the steel bar is located in the middle of the sleeve, while ensuring the integrity and connection strength of the sleeve.

[0030] Although the specific implementation methods of the present invention are described above, those skilled in the art should understand that the specific embodiments described are only illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A quick connection device for main reinforcement of underwater cast-in-place pile reinforcement cage, characterized in that: It comprises a nut, a sleeve and a connecting rod, wherein there are two nuts, which are respectively threadedly connected with the threaded joints of the steel bars corresponding to the upper and lower ends, and the sleeve comprises two semicircular sleeve units, which are enclosed by the two semicircular sleeve units to form the sleeve; the left and right sides of the outer wall of the sleeve are respectively provided with connecting rod reserved grooves, and the shape of the connecting rod reserved grooves matches the connecting rod; half of each connecting rod reserved groove is provided on one of the semicircular sleeve units, and the other half is provided on the other semicircular sleeve unit; each connecting rod is embedded in the corresponding connecting rod reserved groove, and the two semicircular sleeve units are connected by mortise and tenon joints; The inner side of the sleeve is provided with an upper inner cavity, a middle inner cavity and a lower inner cavity from top to bottom in sequence. The diameter of the middle inner cavity is smaller than that of the upper inner cavity and the lower inner cavity. The diameter of the middle inner cavity matches that of the nut. The nut is nested in the middle inner cavity. The diameters of the upper inner cavity and the lower inner cavity match those of the steel bar.

2. The underwater cast-in-place pile reinforcement cage main reinforcement quick connection device according to claim 1, characterized in that: There are four connecting rods, which are arranged in groups of two each and are embedded in corresponding numbers of connecting rod reserved grooves on the left and right sides of the outer wall of the sleeve.

3. A quick connection device for main reinforcement of underwater cast-in-place pile reinforcement cage according to claim 1 or 2, characterized in that: The connecting rod comprises an arc-shaped rod and two end pieces, the height of each end piece is greater than the height of the arc-shaped rod, and the two end pieces are respectively arranged at two ends of the arc-shaped rod to form a wedge-shaped fastener.

4. The underwater cast-in-place pile reinforcement cage main reinforcement quick connection device as claimed in claim 3, characterized in that: The arc-shaped rod and the two end pieces are integrally formed.

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