Embedded sleeve device

Abstract

The utility model discloses a pre-embedded sleeve device which comprises a sleeve body, one end of the sleeve body is provided with a threaded connection section, the periphery of the other end of the sleeve body is provided with at least one joint bar hole, and the sleeve body is provided with a plurality of groups of shear grooves at intervals in the area between the threaded connection section and the joint bar hole. And each group of shear grooves are arranged in the circumferential direction. The embedded sleeve device can be well attached to a steel bar, can also be well combined with concrete and can also be well connected with a lifting appliance or a supporting piece, and lifting and supporting safety of a prefabricated part is fully guaranteed; in addition, the embedded sleeve device further has the advantages of being simple in structure, easy to manufacture and produce in batches, low in production cost, convenient to use and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a pre-buried sleeve device suitable for on-site hoisting and supporting and fixing of assembled structures. Background Art

[0002] At present, after the production and maintenance of prefabricated components of assembled buildings are completed, they need to be hoisted and supported when leaving the factory and during the installation process. Therefore, it is necessary to embed the connection point sleeves used for hoisting and support in advance and complete them simultaneously with the tying of steel bars, so as to connect temporary lifting points and supports during the hoisting process of prefabricated components.

[0003] Traditional embedded sleeves are mostly made of steel bar heads. The source of the raw materials is unknown, and they may be discarded steel bar heads. The processing is complicated, the production loss is large, the installation is bulky, the efficiency is low, and it may also affect the straightness of the steel bars when tying the steel bars. Some other embedded parts are also used, but the connection strength and safety are not as good as embedded sleeves. Summary of the invention

[0004] The utility model aims to provide a pre-embedded sleeve device in view of the problems existing in the prior art.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A pre-embedded sleeve device comprises a sleeve body, one end of the sleeve body is provided with a threaded connection section, the outer circumference of the other end of the sleeve body is provided with at least one reinforcing bar insertion hole, the sleeve body is provided with a plurality of groups of shear grooves at intervals in the area between the threaded connection section and the reinforcing bar insertion hole, and each group of shear grooves is arranged circumferentially.

[0007] The embedded sleeve device can fit well with the steel bars, can be well combined with the concrete, and can be well connected with the hoisting equipment or the supporting parts, so as to fully ensure the hoisting and supporting safety of the prefabricated components; moreover, the embedded sleeve device also has the characteristics of simple structure, easy manufacture and batch production, low production cost and easy use.

[0008] From a structural point of view, multiple groups of shear grooves can be well contacted and anchored with the reinforcing bars or steel cages, and the force can be directly transmitted to the steel bars in the prefabricated components, improving the safety of overall lifting and support. The outer surface of the sleeve body can also be in better close contact with the concrete, reducing the occurrence of cavities between the embedded sleeve and the concrete. At the same time, it is light in weight and can be customized, which greatly improves the stress environment of the prefabricated components and improves the safety and quality of the building structure.

[0009] The cylinder body is a cylindrical structure, which can be processed by hollow steel pipe machining, which can also improve the production efficiency of prefabrication production plants. Compared with the solid processing of traditional embedded sleeves, the cylinder body reduces the consumable loss of tapping equipment and saves costs. For example, it is made by extrusion of high-quality carbon structural steel, and its friction and anchoring force are increased by extruding double-row shear grooves and bottom reinforcement, thereby increasing the safety of the hanging point.

[0010] Furthermore, the threaded connection section is provided with an internal thread or an external thread for connecting a sling or a support.

[0011] Furthermore, an anti-overflow plug is provided inside the threaded connection section to prevent the concrete slurry from flowing back or other impurities from entering.

[0012] Preferably, the anti-overflow plug is a rubber plug or a wooden plug, and is disposed at the intersection and transition point between the threaded connection section and the shear groove, so as to utilize the inner peripheral structure therein to form a limit for the anti-overflow plug.

[0013] Furthermore, the shear groove is an annular groove or a groove arranged in an annular space, the cross section of the shear groove is arc-shaped, rectangular or trapezoidal, and the shear groove is arranged in transition with the outer circumferential arc of the sleeve body.

[0014] Furthermore, the depth of the shear groove is 2 to 10 mm, and the axial length of the shear groove is 10 to 100 mm.

[0015] Furthermore, the distance between two axially adjacent shear grooves is 10 to 100 mm.

[0016] Furthermore, the axial length of the threaded connection section is between 20 and 80 mm.

[0017] Furthermore, the diameter of the reinforcing bar insertion hole is 12 to 40 mm, and the distance between the reinforcing bar insertion hole and the end surface of the sleeve body is 6 to 25 mm.

[0018] Compared with the prior art, the beneficial effects of the utility model are as follows: 1. The embedded sleeve device can be well fitted with the steel bar, can be well combined with the concrete, and can be well connected with the hanger or the support, so as to fully ensure the safety of the hoisting and supporting of the prefabricated component; and the embedded sleeve device also has the characteristics of simple structure, easy manufacture and batch production, low production cost and convenient use; 2. From the structural point of view, the multiple groups of shear grooves can be well contacted and anchored with the reinforcing bars or the steel cage, and the force can be directly transmitted to the steel bars in the prefabricated component, which improves the safety of the overall hoisting and support. At the same time, the self-weight is light and can be customized, which greatly improves the stress environment of the prefabricated component and improves the safety and quality of the building structure; 3. The cylinder body is a cylindrical structure, which can be processed by hollow steel pipe machinery, which can also improve the production efficiency for the prefabrication production plant. Compared with the solid processing of the traditional embedded sleeve, the cylinder body reduces the consumable loss of the tapping equipment and can save costs; 4. The setting of the anti-overflow plug can prevent the concrete slurry from backflowing or entering other impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram of a pre-embedded sleeve device of the utility model;

[0020] In the figure: 1. Threaded connection section; 2. Rebar insertion hole; 3. Shear groove; 4. Internal thread; 5. Anti-overflow plug. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the utility model to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0022] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as "middle", "upper", "lower", "left", "right", "inside" and "outside" are based on the directions 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0023] like Figure 1As shown, a pre-embedded sleeve device includes a sleeve body, one end of the sleeve body is provided with a threaded connection section 1, the outer periphery of the other end of the sleeve body is provided with at least one radially arranged reinforcing bar insertion hole 2, and the sleeve body is provided with a plurality of groups of shear grooves 3 at intervals in the area between the threaded connection section 1 and the reinforcing bar insertion hole 2, and each group of shear grooves 3 is arranged circumferentially.

[0024] The embedded sleeve device can fit well with the steel bars, can be well combined with the concrete, and can be well connected with the hoisting equipment or the supporting parts, so as to fully ensure the hoisting and supporting safety of the prefabricated components; moreover, the embedded sleeve device also has the characteristics of simple structure, easy manufacture and batch production, low production cost and easy use.

[0025] From a structural point of view, the multiple groups of shear grooves 3 can be well contacted and anchored with the reinforcing bars or steel cages, and the force can be directly transmitted to the steel bars in the prefabricated components, which improves the safety of overall lifting and support. The outer surface of the sleeve body can also be in better close contact with the concrete, reducing the occurrence of cavities between the embedded sleeve and the concrete. At the same time, it is light in weight and can be customized, which greatly improves the stress environment of the prefabricated components and improves the safety and quality of the building structure.

[0026] When the embedded sleeve device is in use, it is completed synchronously with the binding of steel bars of the prefabricated component. A transverse steel bar is inserted into the reinforcing bar hole 2 at the lower end of the embedded sleeve, and a group of shear grooves 3 are tightly attached to the single-row steel bar cage, or multiple groups of shear grooves 3 are respectively tightly attached to the double-row steel bar cage and fixed. After the steel bar cage is tied, concrete is poured. If it is a single-row bar, one group of shear grooves can be firmly combined with the single-row bar to increase its anchoring force, and the other shear grooves can also be well combined with the concrete to form a large friction anchoring force. If it is multiple rows of bars (such as double rows of bars), multiple groups of shear grooves (such as two groups of shear grooves) can be firmly combined with multiple rows of bars (such as double rows of bars) at the same time to increase the anchoring force.

[0027] The cylinder body is a cylindrical structure, which can be processed by hollow steel pipe machining, which can also improve the production efficiency for prefabrication production plants. Compared with the solid processing of traditional embedded sleeves, the cylinder body reduces the consumable loss of tapping equipment and can save costs. The embedded sleeve device is an embedded structural member connected to a hanger or a support member. Different from the grouting sleeve in the prior art, the embedded sleeve does not need to be provided with grouting holes and grouting holes.

[0028] In this embodiment, the threaded connection section 1 is provided with an internal thread 4, and the connected hanger or support has a matching thread, which can be connected and fixed by screwing in. The outer surface of such a threaded connection section 1 is a circular smooth surface, which can better contact with the concrete and reduce the appearance of a cavity between the embedded sleeve device and the concrete.

[0029] Furthermore, an anti-overflow plug 5 is provided inside the threaded connection section 1. The anti-overflow plug 5 can prevent the concrete slurry from flowing back or other impurities from entering.

[0030] Preferably, the anti-overflow plug 5 is a rubber plug or a wooden plug, which is arranged at the intersection of the threaded connection section 1 and the shear groove 3. The shear groove 3 forms a convex structure on the inner periphery of the sleeve body. The anti-overflow plug 5 is arranged at this location to play a limiting role, thereby preventing concrete slurry from entering the internal thread, so as not to affect the screwing in or out of the hanger (or support).

[0031] Furthermore, the shear groove 3 is an annular groove or a groove arranged in an annular interval, the cross section of the shear groove 3 is an arc, a rectangle or a trapezoid, and the shear groove 3 is arranged in transition with the outer arc of the sleeve body. The shear groove is extruded by a pressure device, that is, an extrusion molding structure, avoiding machining.

[0032] Each group of shear grooves can be a complete annular groove structure or an arc groove arranged at intervals in an annular shape, and can be installed on the rib row, preferably annular grooves. The arc transition is set to avoid stress concentration at these transition points.

[0033] Furthermore, the depth of the shear groove 3 is 2 to 10 mm, and the axial length of the shear groove 3 is 10 to 100 mm. The spacing between two axially adjacent shear grooves 3 is 10 to 100 mm. The axial length of the threaded connection section 1 is 20 to 80 mm. The diameter of the reinforcing bar hole 2 is 12 to 40 mm, and the distance between the reinforcing bar hole 2 and the end face of the sleeve body is 6 to 25 mm.

[0034] In the actual production process, different models of embedded sleeve devices can be produced with a difference of several millimeters so that they can be used with different prefabricated components.

[0035] In this embodiment, the depth of the shear groove is 3 mm, and the axial length of the shear groove is 15 mm. The spacing between two axially adjacent shear grooves is also 15 mm, so that a relatively uniform distribution can be obtained. In practice, the spacing between the two and the size of the shear groove can be set to be different. The axial length of the threaded connection section is 45 mm. The diameter of the rebar insertion hole can be determined according to the rebar insertion specifications at the construction site, and the distance between the rebar insertion hole and the end face of the sleeve body is about 10 mm.

[0036] A method for installing and using the embedded sleeve device is as follows:

[0037] Step 1: Determine the installation location;

[0038] Step 2: insert the dowel rod along the dowel rod hole reserved at the bottom of the embedded sleeve;

[0039] Step 3: Place one or more sets of shear grooves close to the single or double row of reinforcements;

[0040] Step 4: Tie up the embedded sleeve and steel cage;

[0041] Step 5: pouring concrete to the curing age;

[0042] Step 6: When transporting or lifting on site, screw the lifting device or support into the inner thread end of the embedded sleeve to perform the operation;

[0043] Step 7: After the prefabricated components are transported to their destination, unscrew the hangers or supports and the operation is completed.

[0044] Through the above-mentioned connection structure and method, temporary lifting and supporting of prefabricated components can be better realized, and the lifting and supporting safety of prefabricated components can be fully guaranteed.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pre-buried sleeve device, characterized in that: The sleeve body comprises a sleeve body, one end of which is provided with a threaded connection section, the outer circumference of the other end of the sleeve body is provided with at least one rib insertion hole, and the sleeve body is provided with a plurality of groups of shear grooves at intervals in the area between the threaded connection section and the rib insertion hole, and each group of shear grooves is arranged circumferentially.

2. The embedded sleeve device according to claim 1, characterized in that: The threaded connection section is provided with an internal thread or an external thread and is used for connecting a sling or a support.

3. The embedded sleeve device according to claim 1, characterized in that: An anti-overflow plug is also provided inside the threaded connection section.

4. The embedded sleeve device according to claim 3, characterized in that: The anti-overflow plug is a rubber plug or a wooden plug, and is arranged at the intersection and transition between the threaded connection section and the shear groove.

5. The embedded sleeve device according to claim 1, characterized in that: The shear groove is an annular groove or a groove arranged in an annular space. The cross section of the shear groove is arc-shaped, rectangular or trapezoidal. The shear groove is arranged in transition with the outer circumferential arc of the sleeve body.

6. The embedded sleeve device according to claim 1, characterized in that: The depth of the shear groove is 2-10 mm, and the axial length of the shear groove is 10-100 mm.

7. The embedded sleeve device according to claim 1, characterized in that: The distance between two axially adjacent shear grooves is 10 to 100 mm.

8. The embedded sleeve device according to claim 1, characterized in that: The axial length of the threaded connection section is 20 to 80 mm.

9. The embedded sleeve device according to claim 1, characterized in that: The diameter of the reinforcing bar insertion hole is 12 to 40 mm, and the distance between the reinforcing bar insertion hole and the end surface of the sleeve body is 6 to 25 mm.

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