Novel steel bar connector

Abstract

The utility model belongs to the technical field of reinforcing steel bar connecting pieces, and discloses a novel reinforcing steel bar connector which is characterized in that a first connecting hole is axially formed in an outer sleeve in a penetrating manner, the first connecting hole is sleeved on the outer side of a first reinforcing steel bar, and an internal thread is formed at one end of the first connecting hole; external threads matched with the internal threads of the external sleeve are formed in the surface of the end sleeve, a second connection hole is formed in the end sleeve in the axial direction in a penetrating mode, and the second steel bar is sleeved with the second connection hole; the observation window is arranged in the middle of the outer sleeve. During connection, the steel bars do not need to be rotated, connection is more convenient, thread lines do not need to be arranged at the ends of the steel bars, and the manufacturing cost can be reduced; the observation window is reserved in the surface of the outer sleeve, so that on-site constructors can directly observe whether the internal reinforcing steel bars are screwed to the specified positions or not through the observation window, whether connection of each reinforcing steel bar meets the stress requirement or not is judged, potential safety hazards are eliminated, and operation and use are convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel bar connectors, and in particular relates to a novel steel bar connector. Background Art

[0002] A rebar connector is a connector used to connect two rebars together. A traditional rebar connector is merely a sleeve with an internal thread, wherein one rebar is screwed into one end of the rebar connector and the other rebar is screwed into the other end of the rebar connector. For traditional steel bar connectors, the ends of the steel bars that need to be connected need to be provided with external threads. For example, the authorized patent "A steel bar connector (CN201820192029.8)" includes a tube body, a head, a fixing bolt and two steel bars with external threads I. The tube body is provided with an internal thread I that matches the external thread I of the steel bar, the side wall of the tube body is provided with a through pipe, the through pipe is provided with an internal thread II, a partition is provided in the middle position of the tube body, and the partition is provided with rubber pads on both sides along the axial direction of the tube body. The rubber pad is provided with a head at one end close to the steel bar, the fixing bolt is located in the through pipe, and the end of the steel bar with the external thread I extends into the tube body. The heads on the two steel bars are arranged relatively relatively, so the requirements for the connection are standardized and the flexibility is poor. In addition, the steel bar and the connector are connected by threads, which is inconvenient due to the length of the steel bar.

[0003] Moreover, with traditional rebar connectors, construction site inspectors are unable to confirm whether the rebars at both ends are screwed to the specified position, which poses a structural safety hazard.

[0004] Through the above analysis, the problems and defects of the prior art are as follows: the traditional steel bar connector is connected to the steel bar by threads, which is not convenient for connection operation; the traditional steel bar connector cannot confirm the steel bar connection position, which poses a safety hazard. Utility Model Content

[0005] In order to overcome the problems existing in the related technologies, the utility model provides a novel steel bar connector.

[0006] The technical solution of the utility model is as follows:

[0007] A new type of steel bar connector includes: an outer sleeve, a first connecting hole is formed in the inner part along the axial direction, the first connecting hole is sleeved on the outer side of the first steel bar, and an inner thread is formed at one end of the first connecting hole;

[0008] The end sleeve has an external thread on its surface that matches the internal thread of the external sleeve, and a second connection hole is axially penetrated inside, and the second connection hole is sleeved on the outside of the second steel bar;

[0009] The cavity is provided in the middle of the first connection hole, cooperates with the stop piers at the ends of the first steel bar and the second steel bar, and is sleeved outside the two stop piers;

[0010] The observation window is opened in the middle of the outer sleeve.

[0011] In one embodiment, the first docking hole and the second docking hole have the same inner diameter, and the inner diameter of the cavity is larger than the inner diameter of the first docking hole and the second docking hole.

[0012] In one embodiment, the outer surface of the outer sleeve is a shuttle-shaped structure.

[0013] In one embodiment, the observation window is an oblong hole structure reserved and opened in the middle of the outer sleeve.

[0014] In one embodiment, the long axis direction of the observation window is parallel to the axial direction of the outer sleeve.

[0015] In one embodiment, a docking limit mark is provided on the outer sleeve on the side of the observation window.

[0016] In one embodiment, a limiting edge is integrally formed on the outer side of the outer end of the end sleeve, and the outer side of the limiting edge is flush with the outer side of the end of the outer sleeve.

[0017] Combining all the above-mentioned technical solutions, the advantages and positive effects of the utility model are as follows: the utility model divides the connector into two parts, namely, an outer sleeve and an end sleeve which can be adjusted axially relative to each other. There is no need to rotate the steel bars during connection. As the first steel bar and the second steel bar are pressed tightly, the two sections of steel bars are tightened inside the cavity, making the connection more convenient. There is no need to set a threaded line at the end of the steel bar, which helps to reduce the production cost. By reserving an observation window on the surface of the outer sleeve, on-site construction personnel can directly observe whether the internal steel bars are screwed to the specified position through the observation window, and then judge whether the connection of each steel bar meets the force requirements, eliminating safety hazards, and facilitating operation and use.

[0018] The utility model provides a cavity with an inner diameter larger than the first connecting hole and the second connecting hole, which can limit and fix the stop pier at the end of the pier head steel bar, prevent the external connecting structure and the second steel bar from detaching, and realize stable connection between the connected steel bars.

[0019] The utility model adjusts the end diameter of the traditional equal-diameter steel bar connector from a cylindrical type to a shuttle-shaped structure with a gradually decreasing diameter on both sides, which can not only meet the force requirements, but also save the raw materials used in the production of the steel bar connector. The utility model can ensure the observation width by setting the observation window as a long elliptical hole whose long axis direction is parallel to the axial direction of the external sleeve. The connection limit mark can be used as a reference line for construction site inspectors to judge whether the steel bars at both ends are screwed to the specified position.

[0020] It should be understood that the above general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0022] Figure 1 It is a structural schematic diagram of a new type of steel bar connector provided by an embodiment of the utility model;

[0023] Figure 2 It is a schematic diagram of the structure of the cavity provided by the embodiment of the utility model;

[0024] Figure 3 It is a schematic diagram of the structure of the limit edge provided by the embodiment of the utility model;

[0025] Figure 4 It is a schematic diagram of the installation of a new type of steel bar connector provided by an embodiment of the utility model;

[0026] In the figure: 1. External sleeve; 2. End sleeve; 3. First connecting hole; 4. First steel bar; 5. Second connecting hole; 6. Second steel bar; 7. Cavity; 8. Observation window; 9. Stop pier; 10. Limiting edge; 11. Reinforced concrete column; 12. Post-embedded reinforced concrete beam; 13. New steel bar connector. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation of the utility model is described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific implementation disclosed below.

[0028] like Figure 1 As shown, the new steel bar connector provided by the embodiment of the utility model includes an outer sleeve 1 and an end sleeve 2, and the end sleeve 2 is installed in the middle of one end of the outer sleeve 1 through threads.

[0029] A first connecting hole 3 is axially penetrated inside the outer sleeve 1, and the first connecting hole 3 is sleeved on the outside of the first steel bar 4. An internal thread is formed at one end of the first connecting hole 3; an observation window 8 is formed in the middle of the outer sleeve 1.

[0030] The surface of the end sleeve 2 is provided with an external thread that matches the internal thread of the external sleeve 1 , and the interior is provided with a second connecting hole 5 that penetrates axially, and the second connecting hole 5 is sleeved on the outside of the second steel bar 6 .

[0031] The first steel bar 1 and the second steel bar 2 in the embodiment of the utility model are both thick steel bars with stop piers 9 preset at the ends.

[0032] Preferably, the outer surface of the outer sleeve 1 in the embodiment of the utility model is a shuttle-shaped structure. According to the analysis of the stress state of the steel bar connector, the stress at both ends of the connector is the smallest, and the stress in the middle is the largest. Therefore, the end diameter of the traditional equal-diameter steel bar connector is adjusted to a shuttle-shaped structure with gradually decreasing diameters on both sides, making it a new type of shuttle-shaped steel bar connector, which not only meets the stress requirements but also saves the raw materials used in the manufacture of the steel bar connector.

[0033] Preferably, the observation window 8 in the embodiment of the utility model is an oblong hole structure reserved in the middle of the outer sleeve 1, the long axis direction of the observation window 8 is parallel to the axial direction of the outer sleeve 1, and a connection limit mark is provided on the outer sleeve 1 on the side of the observation window 8. The construction site inspectors can directly observe whether the steel bars at both ends of the connector are screwed to the specified position through the oblong holes on the surface of the steel bar connector, and then determine whether each steel bar connection meets the force requirements. At the same time, the length and area of ​​the oblong holes of the steel bar connector are within a reasonable range, so that the steel bar connector itself can meet the steel bar force transmission requirements. The connection limit mark can be used as a reference line for construction site inspectors to determine whether the steel bars at both ends are screwed to the specified position.

[0034] like Figure 2 As shown, a cavity 7 is provided in the middle of the first connecting hole 3 in the embodiment of the utility model, and the cavity 7 cooperates with the stop piers 9 at the ends of the first steel bar 4 and the second steel bar 6 and is sleeved on the outside of the two stop piers 9 .

[0035] In the embodiment of the utility model, the inner diameters of the first connecting hole 3 and the second connecting hole 5 are the same, and the inner diameter of the cavity 7 is larger than the inner diameters of the first connecting hole 3 and the second connecting hole 5 .

[0036] like Figure 3 As shown, the outer side of the outer end of the end sleeve 2 in the embodiment of the utility model is integrally formed with a limiting edge 10 , and the outer side of the limiting edge 10 is flush with the outer side of the end of the outer sleeve 1 .

[0037] The working principle of the utility model is as follows: when the utility model is in use, the outer sleeve 1 and the end sleeve 2 are respectively inserted into the other end of the first steel bar 4 and the second steel bar 6, and the end sleeve 2 is installed in the middle of one end of the outer sleeve 1 through a thread, so that the stop piers 9 of the first steel bar 4 and the second steel bar 6 fit together. The utility model divides the connector structure into two parts, including the outer sleeve 1 and the end sleeve 2. There is no need to rotate the steel bars during connection, and there is no need to engrave thread lines on the ends of the steel bars, which helps to reduce the manufacturing cost and makes connection more convenient. The stop piers 9 of the first steel bar 4 and the second steel bar 6 are both located in the cavity 7 to prevent the first steel bar 4 and the second steel bar 6 from detaching, and to achieve stable connection between the connected steel bars, and the structure is simple and the manufacturing cost is low. Through the long elliptical observation window 8 on the surface of the outer sleeve 1, it is possible to directly observe whether the steel bars at both ends of the connector are screwed to the specified position, and then judge whether the connection of each steel bar meets the force requirements.

[0038] The new steel bar connector provided by the embodiment of the utility model is suitable for connecting steel bars in reinforced concrete columns and beams, connecting steel bars in steel tube concrete columns, rigid frame concrete columns and concrete beams, and connecting steel bars in subway ground-connected walls with steel bars in concrete floor slabs of subway stations. It has a wide range of applications.

[0039] like Figure 4 As shown, in view of the situation where a post-embedded reinforced concrete beam 12 needs to be added between the existing reinforced concrete columns 11, a common practice is to use the embedding technology to fix the required steel bars in the openings of the reinforced concrete columns by means of anchoring glue. Since the length of the embedded steel bars is fixed, the four sections of steel bars require the new steel bar connector 13 provided by the utility model to connect the steel bars under limited conditions. The specific method is as follows: 1. Calculate the required length of the left and right steel bars. This length needs to take into account the length of the steel bars shortened after the steel bars are thickened. 2. Thicken the steel bars, and insert the external sleeve 1 and the end sleeve 2 in the utility model into the steel bars on the left and right sides respectively. 3. Embed the steel bars on the un-thickened side into the reinforced concrete column. 4. Align the steel bars on the thickened side at the position of the cavity 7, and then tighten the external sleeve 1 and the end sleeve 2 to achieve the connection of the two sections of post-embedded steel bars.

[0040] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention 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 operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it; although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents, and these modifications or replacements should be included in the protection scope of the utility model.

Claims

1. A new type of steel bar connector, characterized in that: The novel steel bar connector comprises: The outer sleeve (1) has a first connection hole (3) extending therethrough in the axial direction, the first connection hole (3) is sleeved on the outside of the first steel bar (4), and one end of the first connection hole (3) is provided with an internal thread; The end sleeve (2) has an external thread on its surface that matches the internal thread of the external sleeve (1), and a second connection hole (5) is axially penetrated inside, and the second connection hole (5) is sleeved on the outside of the second steel bar (6); The cavity (7) is provided in the middle of the first connection hole (3), cooperates with the stop piers (9) at the ends of the first steel bar (4) and the second steel bar (6), and is sleeved outside the two stop piers (9); An observation window (8) is provided in the middle of the outer sleeve (1).

2. The new steel bar connector according to claim 1 is characterized in that: The inner diameters of the first connecting hole (3) and the second connecting hole (5) are the same, and the inner diameter of the cavity (7) is larger than the inner diameters of the first connecting hole (3) and the second connecting hole (5).

3. The new steel bar connector according to claim 1 is characterized in that: The outer surface of the outer sleeve (1) is a shuttle-shaped structure.

4. The new steel bar connector according to claim 1 is characterized in that: The observation window (8) is a long elliptical hole structure reserved and opened in the middle of the outer sleeve (1).

5. The new steel bar connector according to claim 4 is characterized in that: The long axis direction of the observation window (8) is parallel to the axial direction of the outer sleeve (1).

6. The new steel bar connector according to claim 5 is characterized in that: A connection limit mark is provided on the outer sleeve (1) on the side of the observation window (8).

7. The new steel bar connector according to claim 1 is characterized in that: The outer side of the outer end of the end sleeve (2) is integrally formed with a limiting edge (10), and the outer side of the limiting edge (10) is flush with the outer side of the end of the outer sleeve (1).

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