Prefabricated assembly type reinforcing steel bar sleeve connecting structure

Abstract

The invention discloses a prefabricated assembly type reinforcing steel bar sleeve connecting structure, and relates to the technical field of reinforcing steel bar sleeves, according to the technical scheme, the prefabricated assembly type reinforcing steel bar sleeve connecting structure comprises a sleeve main body, a force bearing unit is arranged at the outer end of the sleeve main body, and a reinforcing steel bar wrench tightens the sleeve main body by clamping the force bearing unit; a plurality of groups of connecting contacts are uniformly distributed between the force bearing unit and the sleeve main body, so that the force bearing unit and the sleeve main body are relatively fixed; wherein the total torque capable of being borne by the connecting contacts is N, N is the minimum torque standard value of the corresponding specification of the sleeve body, and when the torque reaches N, the connecting contacts are all broken. The bearing unit is arranged on the outer side of the sleeve main body, and the connecting contact which achieves a fixed torque and is convenient to break is arranged between the bearing unit and the sleeve main body, so that a constructor does not need to specially use a torque wrench and adjust the torque according to specifications, and tightening with a standard torque can be realized only by using a conventional wrench, thereby improving the efficiency.

Description

Technical Field

[0001] This invention relates to the field of rebar sleeve technology, and more specifically to a prefabricated assembled rebar sleeve connection structure. Background Technology

[0002] In the context of industrialized building and green construction, prefabricated components, such as autoclaved aerated concrete (ALC) panels and lightweight composite insulation panels, are widely used for lightweight interior partitions and exterior cladding systems due to their light weight, good thermal insulation performance, and quick installation. These components all have pre-embedded steel reinforcement cages inside and pre-reserved connecting steel bars at the ends of the panels to ensure a reliable connection with the main structure.

[0003] Currently, the conventional method for connecting two sections of reinforcing bars on construction sites is to use steel wire for binding. However, in prefabricated structures, when the diameter of the threaded steel bars connecting precast components such as autoclaved aerated concrete slabs reaches the value specified in the code, the strength of the steel wire binding is insufficient. Therefore, it is necessary to use steel sleeves with higher connection strength for mechanical connection and fixation. To ensure that the connection joint achieves the same strength as the base material, the code also imposes strict limits on the tightening torque of sleeves of different specifications, requiring them to meet the standard torque range.

[0004] Therefore, specialized rebar coupler torque wrenches must be used during construction. However, these wrenches are expensive, and most construction sites only have one or two. This results in a situation where, after a large number of lightweight panels with embedded rebar are hoisted into place, only a few workers can tighten the couplers simultaneously, creating a significant efficiency bottleneck. Furthermore, the torque of the wrench needs frequent adjustment for different coupler sizes, further reducing overall construction efficiency. This contradicts the high efficiency and speed principles of prefabricated construction and has become one of the key factors restricting the assembly efficiency of precast components such as autoclaved aerated concrete panels.

[0005] Therefore, this invention was designed to solve the above-mentioned problems.

[0006] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is the closest prior art. Summary of the Invention

[0007] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a prefabricated assembled steel bar sleeve connection structure.

[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0009] A prefabricated assembled steel bar sleeve connection structure includes a sleeve body, with a load-bearing unit provided at the outer end of the sleeve body. A steel bar wrench tightens the sleeve body by clamping the load-bearing unit. Multiple sets of connecting contact points are evenly distributed between the load-bearing unit and the sleeve body, so that the two are relatively fixed. The total torque that the connecting contact points can withstand is N, where N is the minimum torque standard value of the corresponding specification of the sleeve body. When the torque reaches N, all connecting contact points will break.

[0010] Furthermore, the load-bearing unit includes a load-bearing ring rotatably fitted in the middle of the sleeve body and a connecting plate disposed on the load-bearing ring, wherein the connecting contact point is disposed between the connecting plate and the sleeve body.

[0011] Furthermore, multiple sets of bayonet grooves are evenly distributed on the sleeve body, and the connecting plate is provided with a snap-fit ​​block that matches the bayonet groove, wherein the snap-fit ​​block and the bayonet groove are snapped together to form a connecting contact point.

[0012] Furthermore, the opening of the bayonet groove on the side away from the center of the sleeve body is recessed, forming a trapezoidal cross-section.

[0013] Furthermore, the connecting plate is also provided with protective rings extending beyond both ends of the sleeve body.

[0014] Furthermore, the protective ring is made of a wear-resistant and impact-resistant elastic material, and its two ends are connected by a connecting strap to form a closed ring.

[0015] Furthermore, a pin is provided on the side of the connecting plate opposite to the force-bearing ring, and a pin hole is provided on the force-bearing ring for inserting the pin.

[0016] Furthermore, the inner curved side of the protective ring is provided with a snap-fit ​​protrusion, and the surface of the fixing plate is provided with a countersunk groove for the snap-fit ​​protrusion to snap into.

[0017] Furthermore, multiple sets of vertical grooves are evenly distributed on the surface of the force-bearing ring, and two sets of protective rings are connected to a connecting strip, wherein the middle part of the connecting strip can be embedded in the vertical groove and does not extend beyond the outer surface of the force-bearing ring.

[0018] Furthermore, a raised ring is provided on the outer surface of the sleeve body, and an annular groove is provided on the inner surface of the force-bearing ring to engage with the raised ring.

[0019] Compared with the prior art, the beneficial effects of this solution are: by setting a load-bearing unit on the outside of the sleeve body and setting a connecting contact point between the two that disconnects when a fixed torque is reached, the construction personnel do not need to use a torque wrench and adjust the torque according to the specifications. They can simply use a regular wrench to achieve the standard torque tightening, which effectively improves the construction efficiency of prefabrication and assembly. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0021] Figure 1 This is a frontal three-dimensional schematic diagram of an embodiment of the present invention;

[0022] Figure 2 This is a side-view stereoscopic diagram of an embodiment of the present invention;

[0023] Figure 3 This is a side view schematic diagram of an embodiment of the present invention;

[0024] Figure 4 This is a top view schematic diagram of an embodiment of the present invention;

[0025] Figure 5 This is a cross-sectional perspective view of an embodiment of the present invention;

[0026] Figure 6 This is a disassembly diagram of the connecting plate and the protective ring in an embodiment of the present invention;

[0027] Figure 7 This is a disassembly diagram of the sleeve body and the fixing plate in an embodiment of the present invention;

[0028] Figure 8 This is a schematic diagram of the structure of the connecting plate in an embodiment of the present invention;

[0029] Figure 9 This is a disassembly diagram of the sleeve body and the force-bearing ring in an embodiment of the present invention.

[0030] In the figure: 1. Sleeve body; 2. Force ring; 21. Connecting plate; 22. Bayonet groove; 23. Snap-fit ​​block; 3. Protective ring; 31. Connecting strip; 4. Pin rod; 41. Pin hole; 5. Snap-fit ​​protrusion; 51. Countersunk groove; 6. Vertical groove; 7. Protruding ring; 71. Annular groove. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] like Figure 1-9The prefabricated assembled steel sleeve connection structure shown includes a sleeve body 1. A load-bearing unit is provided at the outer end of the sleeve body 1. A steel wrench tightens the sleeve body 1 by clamping the load-bearing unit, which can avoid structural deformation caused by directly clamping the outer surface of the sleeve body 1. Multiple sets of connecting contact points are evenly distributed between the load-bearing unit and the sleeve body 1, so that the two are relatively fixed. The total torque that the connecting contact points can withstand is N, where N is the minimum torque standard value of the corresponding specification of the sleeve body 1. Different specifications of the sleeve body 1 correspond to connecting contact points with different torque strengths. According to the manufacturer's pre-production debugging, the torque at which the connecting contact points break can be accurately obtained. When the torque reaches N, all connecting contact points break. Thus, without the use of a torque wrench, workers can easily tighten the sleeve body 1 to the standard torque value, improving work efficiency.

[0033] In one embodiment, the load-bearing unit includes a force-bearing ring 2 rotatably fitted in the middle of the sleeve body 1 and a fixing plate 21 disposed on the force-bearing ring 2. A protruding ring 7 is provided on the outer surface of the sleeve body 1, and an annular groove 71 is provided on the inner surface of the force-bearing ring 2 to movably engage with the protruding ring 7, so that the force-bearing ring 2 can rotate relative to the sleeve body 1. Multiple sets of locking grooves 22 are evenly distributed on the sleeve body 1, and locking blocks 23 adapted to the locking grooves 22 are provided on the fixing plate 21, wherein the locking blocks 23 and the locking grooves 22 engage to form a connecting contact point. The snap-fit ​​block 23 is made of nylon or plastic, which has a certain degree of toughness and can break when the torque reaches a certain strength. The snap-fit ​​block 23 is made of nylon or plastic and is formed by injection molding. Part of it is fixed by injection molding into the groove on the fixing plate 21, so that it can be stably connected with the fixing plate 21. At the same time, according to the different torque values ​​required by different specifications of sleeve body 1, the number of snap-fit ​​blocks 23 can be increased or decreased accordingly, thereby changing the total torque value N in a modular form, making production more convenient.

[0034] It should be noted that the connection point can also be designed as a spot weld, and the connection plate 21 and the sleeve body 1 are fixed by the weld. When the torque reaches N, the weld will break. This solution can also achieve the desired effect. However, due to the welding connection, the torque at the weld point will fluctuate, so it is not easy to control the torque precisely. However, it can be used as a temporary backup design. The optimal solution is to use a modular design mode.

[0035] In one embodiment, the opening of the bayonet groove 22 on the side away from the center of the sleeve body 1 is inward to form a trapezoidal cross section, and sharp corners are formed on both sides of the opening. Since the locking block 23 fits into the bayonet groove 22, the locking block 23 will form an inward portion, which is relatively weak. At the same time, the sharp corners of the bayonet groove 22 can increase the shearing force, thus ensuring that this part will break first under the action of strong torque.

[0036] In one embodiment, the connecting plate 21 is also provided with protective rings 3 that extend beyond both ends of the sleeve body 1. The protective rings 3 are made of wear-resistant and impact-resistant elastic material, and their two ends are connected by connecting straps 31 to form a closed ring. This allows the product to have a built-in protective structure for the ends of the sleeve body 1 when it leaves the factory. When connecting to the end of the reinforcing bar, the protective rings 3 do not need to be removed from the sleeve body 1. The connecting straps 31 and the protective rings 3 are made using a bridging process similar to that between a beverage bottle cap and the cap ring. After the reinforcing bar is connected to the sleeve body 1, the connecting straps 31 can be pulled to tear them off from the protective rings 3. The protective rings 3 will unfold into a strip and detach, allowing for convenient and quick removal.

[0037] In one embodiment, the protective ring 3 protects the end of the sleeve body 1 and also serves as a fixing structure for the connecting plate 21. The connecting plate 21 can be detached from the force-bearing ring 2. Specifically, a pin 4 is provided on the side of the connecting plate 21 opposite to the force-bearing ring 2, and a pin hole 41 is provided on the force-bearing ring 2 for the pin 4 to be inserted. This allows the connecting plate 21 to be assembled onto the force-bearing ring 2 by insertion, facilitating the tightening of the sleeve body 1. It can then be removed and the retaining plate 21 can be recycled, reducing material costs. In order to fix the retaining plate 21, a snap-fit ​​protrusion 5 is provided on the inner curved side of the protective ring 3. The surface of the retaining plate 21 is provided with a countersunk groove 51 for the snap-fit ​​protrusion 5 to snap into. The force ring 2, the retaining plate 21 and the snap-fit ​​protrusion 5 are all made of the same metal material as the sleeve body 1. When the snap-fit ​​protrusion 5 snaps into the countersunk groove 51, the protective rings 3 at both ends fix the retaining plate 21, preventing it from detaching from the force ring 2.

[0038] In one embodiment, multiple sets of vertical grooves 6 are evenly distributed on the surface of the force-bearing ring 2. Two sets of protective rings 3 are connected to a set of connecting strips 31. The middle part of the connecting strip 31 can be embedded in the vertical grooves 6 and does not exceed the outer surface of the force-bearing ring 2. The setting of the vertical grooves 6 not only ensures the accommodation of the connecting strips 31, so that the wrench will not damage the connecting strips 31 when clamping the force-bearing ring 2, but also increases the friction between the wrench and the force-bearing ring 2 to prevent slippage. In addition, the setting of the vertical grooves 6 and the bayonet grooves 22 allows the grout to flow and fill the interior during subsequent grouting, making the connection between the product and the concrete tighter and enhancing the stability of the structure.

[0039] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

Claims

1. A prefabricated assembled steel bar sleeve connection structure, comprising a sleeve body (1), characterized in that: The outer end of the sleeve body (1) is provided with a load-bearing unit, and the steel bar wrench tightens the sleeve body (1) by clamping the load-bearing unit; Multiple sets of connection points are evenly distributed between the load-bearing unit and the sleeve body (1) to make the two relatively fixed; The total torque that the connecting contact points can withstand is N, where N is the minimum torque standard value of the sleeve body (1) corresponding to the specification. When the torque reaches N, the connecting contact points will all break.

2. The prefabricated assembled steel sleeve connection structure according to claim 1, characterized in that: The load-bearing unit includes a load-bearing ring (2) that is rotatably sleeved in the middle of the sleeve body (1) and a connecting plate (21) set on the load-bearing ring (2), wherein the connecting contact point is set between the connecting plate (21) and the sleeve body (1).

3. The prefabricated assembled steel sleeve connection structure according to claim 2, characterized in that: Multiple sets of bayonet grooves (22) are evenly distributed on the sleeve body (1), and a snap-fit ​​block (23) adapted to the bayonet groove (22) is provided on the fixing plate (21), wherein the snap-fit ​​block (23) and the bayonet groove (22) are snapped together to form a connecting contact point.

4. The prefabricated assembled steel sleeve connection structure according to claim 3, characterized in that: The opening of the bayonet groove (22) on the side away from the center of the sleeve body (1) is recessed to form a trapezoidal cross section.

5. The prefabricated assembled steel sleeve connection structure according to any one of claims 2-4, characterized in that: The mounting plate (21) is also provided with protective rings (3) extending beyond both ends of the sleeve body (1).

6. The prefabricated assembled steel sleeve connection structure according to claim 5, characterized in that: The protective ring (3) is made of wear-resistant and impact-resistant elastic material, and its two ends are connected by a connecting band (31) to form a closed ring.

7. The prefabricated assembled steel sleeve connection structure according to claim 6, characterized in that: The connecting plate (21) is provided with a pin rod (4) on one side opposite to the force ring (2), and the force ring (2) is provided with a pin hole (41) for the pin rod (4) to be inserted.

8. The prefabricated assembled steel sleeve connection structure according to claim 6 or 7, characterized in that: The inner curved side of the protective ring (3) is provided with a snap-fit ​​protrusion (5), and the surface of the fixing plate (21) is provided with a countersunk groove (51) for snap-fitting the snap-fit ​​protrusion (5).

9. The prefabricated assembled steel sleeve connection structure according to claim 8, characterized in that: The surface of the force ring (2) is evenly provided with multiple sets of vertical grooves (6), and two sets of protective rings (3) are connected to a set of connecting strips (31), wherein the middle part of the connecting strip (31) can be embedded in the vertical grooves (6) and does not exceed the outer surface of the force ring (2).

10. The prefabricated assembled steel sleeve connection structure according to claim 2, characterized in that: The outer surface of the sleeve body (1) is provided with a protruding ring (7), and the inner surface of the force ring (2) is provided with an annular groove (71) that is movably engaged with the protruding ring (7).

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