Steel bar connector of assembly type prefabricated part and assembly type prefabricated part

Abstract

The steel bar connector comprises two sleeves and an I-shaped connecting rod, bosses are arranged at the two ends of the I-shaped connecting rod, limiting steps used for positioning the bosses at the two ends of the I-shaped connecting rod are arranged at one ends of the two sleeves, a stepped through hole is formed, and the limiting steps are arranged at the two ends of the I-shaped connecting rod and used for positioning the bosses at the two ends of the I-shaped connecting rod. One end of the I-shaped connecting rod is provided with a stepped through hole, the other end of the I-shaped connecting rod is provided with a straight barrel section used for being arranged on a to-be-connected steel bar in a sleeving mode, the straight barrel section is provided with internal threads matched with threads of the to-be-connected steel bar, and bosses at the two ends of the I-shaped connecting rod are in clearance fit with the stepped through holes of the two sleeves respectively. Adjusting gaps are reserved between bosses at the two ends of the I-shaped connecting rod and the stepped through holes. The rod part of the I-shaped connecting rod is further provided with an external thread, and the rod part of the I-shaped connecting rod is sleeved with a locking nut matched with the external thread. The connecting structure is simple in structure, and effectively solves the problem of connection when positioning deviation exists in the longitudinal steel bars between the two prefabricated parts.

Description

Technical Field

[0001] The utility model belongs to the technical field of civil engineering, and in particular relates to a steel bar connector of an assembled prefabricated component and the assembled prefabricated component. Background Art

[0002] In existing prefabricated concrete structures, when installing prefabricated structural components, the steel bars cannot be rotated, so reliable and low-cost straight threaded sleeves cannot be used for connection. In addition, the vertical steel bars of prefabricated structural components (walls and columns) inevitably have positioning errors. When the steel sleeves in the traditional cast-in-place process are used for connection, the upper and lower rigid structures are connected. If there is a misalignment, the steel bars are usually bent by force, such as Figure 1 As shown, the steel bars are damaged, and this model does not conform to the original intention of prefabrication. Summary of the invention

[0003] The purpose of the utility model is to address the deficiencies in the prior art and to provide a steel bar connector for an assembled prefabricated component and an assembled prefabricated component, which has a simple structure and increases the tolerance space between two connected steel bars, thereby solving the connection problem when there is a positioning deviation in the longitudinal steel bars of the two prefabricated components within the error range allowed in production and construction.

[0004] One of the purposes of the utility model is to adopt a technical solution:

[0005] A steel bar connector for assembled prefabricated components, comprising two sleeves and an I-shaped connecting rod, both ends of the I-shaped connecting rod are provided with bosses, one end of the two sleeves are provided with limiting steps for positioning the bosses at both ends of the I-shaped connecting rod to form a stepped through hole, and the other end is provided with a straight tube section for sleeved on the steel bars to be connected, the straight tube section is provided with an internal thread that matches the thread of the steel bars to be connected, the bosses at both ends of the I-shaped connecting rod are respectively matched with the stepped through holes of the two sleeves, and an adjustment gap is left between the bosses at both ends of the I-shaped connecting rod and the stepped through holes; the rod portion of the I-shaped connecting rod is also provided with an external thread, and the rod portion of the I-shaped connecting rod is sleeved with a locking nut that matches the external thread.

[0006] Furthermore, the two sleeves are both made of steel sleeves, and the I-shaped connecting rod is made of high-strength connecting steel bars.

[0007] Furthermore, two locking nuts matching the external threads are sleeved on the rod portion of the I-shaped connecting rod.

[0008] Furthermore, a tapered transition section is provided between the straight section of the sleeve and the stepped through hole.

[0009] Furthermore, the outer diameter of the locking nut is larger than the minor diameter of the stepped through hole.

[0010] Furthermore, it also includes a gasket, which is arranged between the locking nut and the limiting step.

[0011] Furthermore, the rod length of the I-shaped connecting rod is greater than or equal to 30 cm.

[0012] Furthermore, a clearance adjustment gap between the rod portion of the I-shaped connecting rod and the stepped through hole is smaller than a width of a boss of the I-shaped connecting rod.

[0013] The second technical solution adopted by the utility model is:

[0014] An assembled prefabricated component using a steel bar connector comprises a first prefabricated component and a second prefabricated component, wherein the steel bar connector described above is used between the steel bars to be connected of the first prefabricated component and the steel bars to be connected of the second prefabricated component.

[0015] Furthermore, the concrete layer outside the steel bars to be connected of the first prefabricated part is provided with a first groove for installing a steel bar connector, and the concrete layer outside the steel bars to be connected of the second prefabricated part is provided with a second groove for installing a steel bar connector, and the straight sections of the two sleeves of the steel bar connector respectively cooperate with the first groove and the second groove.

[0016] The above technical solution has the following beneficial effects:

[0017] The utility model has a simple structure. The two ends of an I-shaped connecting rod are respectively sleeved in the stepped through holes of two sleeves, and a gap is left in the stepped through hole between the I-shaped connecting rod and the two sleeves, so that the I-shaped connecting rod can move laterally in the sleeve, and the position of the I-shaped connecting rod after movement and adjustment is locked by a locking nut, and the internal threads of the straight tube sections of the two sleeves are respectively connected to the threads of the steel bars to be connected, thereby realizing a semi-flexible structure, increasing the tolerance space for connecting the steel bars to be connected, and effectively solving the connection problem when there is a positioning deviation between the longitudinal steel bars of the two prefabricated components within the error range allowed in production and construction.

[0018] It also includes a gasket, which is arranged between the locking nut and the limiting step, and the locking nut is prevented from loosening by the gasket.

[0019] The length of the I-shaped connecting rod is greater than or equal to 30 cm, which effectively prevents the stress concentration caused by the I-shaped connecting rod being too short, and is also convenient for operation and installation.

[0020] The adjustment gap is smaller than the width of the boss of the I-shaped connecting rod, which effectively prevents the I-shaped connecting rod from falling off from the stepped through hole of the sleeve.

[0021] The outer concrete layer of the steel bars to be connected of the first prefabricated part is provided with a first groove for installing a steel bar connector, and the outer concrete layer of the steel bars to be connected of the second prefabricated part is provided with a second groove for installing a steel bar connector. The straight sections of the two sleeves of the steel bar connector extend into the first groove and the second groove. The two sleeves of the steel bar connector are positioned by the first groove and the second groove, so that the connection between the sleeve and the prefabricated part is more firmly connected, thereby improving the connection strength.

[0022] Further description is given below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the existing structure;

[0024] Figure 2 It is a structural schematic diagram of specific embodiment 1;

[0025] Figure 3 It is the AA cross-sectional view in the specific embodiment 1;

[0026] Figure 4 It is a structural schematic diagram of specific embodiment 2;

[0027] Figure 5 This is a schematic diagram of the use status in specific embodiment 2.

[0028] In the accompanying drawings, 1 is a sleeve, 1-1 is a limiting step, 1-2 is a straight section, 1-3 is a transition section, 2 is an I-shaped connecting rod, 2-1 is a boss, 3 is an adjustment gap, 4 is a locking nut, 5 is a gasket, 6 is a first preformed part, 6-1 is a first groove, 7 is a second preformed part, and 7-1 is a second groove. DETAILED DESCRIPTION Specific embodiment 1:

[0030] See also Figure 2 and 3As shown, a steel bar connector for assembled prefabricated components includes two sleeves 1 and an I-shaped connecting rod 2. The two sleeves 1 are both made of steel sleeves. Both ends of the I-shaped connecting rod 2 are provided with bosses 2-1. The bosses 2-1 can be rectangular or circular in structure. The rod length of the I-shaped connecting rod 2 is greater than or equal to 30 cm. The I-shaped connecting rod 2 is made of high-strength connecting steel bars. In this specific embodiment: the rod of the I-shaped connecting rod 2 is circular, the boss is a circular boss, the two sleeves are reducing sleeves, one end of the two sleeves 1 is provided with a limiting step 1-1 for positioning the bosses at both ends of the I-shaped connecting rod to form a stepped through hole, and the other end is provided with a straight tube section 1-2 for sleeved on the steel bar to be connected, and the straight tube section 1-2 is provided with an internal thread that matches the thread of the steel bar to be connected; the bosses 2-1 at both ends of the I-shaped connecting rod 2 are respectively matched with the stepped through holes of the two sleeves 2. An adjustment gap 3 is left between the bosses 2-1 at both ends of the I-shaped connecting rod 2 and the stepped through hole, and the adjustment gap 3 facilitates the lateral movement of the I-shaped connecting rod in the stepped through hole. The adjustment gap between the rod portion of the I-shaped connecting rod 2 and the stepped through hole is smaller than the width of the boss 2-1 of the I-shaped connecting rod 2. Even if the I-shaped connecting rod 2 is adjusted to one side, the boss on one side of the I-shaped connecting rod 2 can be pressed against the limiting step 1-1 of the sleeve, effectively preventing the I-shaped connecting rod from falling off from the stepped through hole of the sleeve.

[0031] The rod portion of the I-shaped connecting rod 2 is also provided with an external thread, and a locking nut 4 matching the external thread is sleeved on the rod portion of the I-shaped connecting rod. The outer diameter of the locking nut 4 is larger than the minor diameter of the stepped through hole, and the adjusted position of the I-shaped connecting rod is positioned and locked by the locking nut 4. Possibly, a gasket 5 is also included, and the gasket 5 is arranged between the locking nut 4 and the limiting step 1-1. In this specific embodiment: two locking nuts 4 matching the external thread are sleeved on the rod portion of the I-shaped connecting rod 2, and the two locking nuts 4 are respectively located on the upper and lower sides of the I-shaped connecting rod 2, and are used to lock the connection position between the bosses at both ends of the I-shaped connecting rod 2 and the sleeve.

[0032] Possibly, a tapered transition section 1 - 3 is provided between the straight section 1 - 2 of the sleeve 1 and the stepped through hole. Specific embodiment 2:

[0034] like Figure 4 and Figure 5 As shown, the feature of this specific embodiment is: providing an assembled prefabricated component using a steel bar connector, including a first prefabricated component 6 and a second prefabricated component 7, and the steel bar connector described in specific embodiment 1 is used between the steel bars to be connected of the first prefabricated component 6 and the steel bars to be connected of the second prefabricated component 7.

[0035] The outer concrete layer of the steel bars to be connected of the first prefabricated part 6 is provided with a first groove 6-1 for installing a steel bar connector, and the outer concrete layer of the steel bars to be connected of the second prefabricated part 7 is provided with a second groove 7-1 for installing a steel bar connector, the first groove 6-1 and the second groove 7-1 are circular grooves, and the straight sections of the two sleeves of the steel bar connector are respectively matched with the first groove 6-1 and the second groove 7-1, and are sealed and positioned by sealant; in this specific embodiment: the first prefabricated part 6 and the second prefabricated part 7 are arranged up and down, and the straight sections of the two sleeves are respectively threadedly connected with the connecting steel bars of the first prefabricated part 6 and the second prefabricated part 7 arranged up and down, and the straight section of the sleeve 1 extends into the first groove 6-1 and the second groove 7-1 for positioning, and then is sealed and fixed with high-strength structural adhesive.

[0036] The working principle of this utility model:

[0037] First, the two sleeves of the steel bar connector are respectively threadedly connected to the upper prefabricated component and the lower prefabricated component. After the longitudinal bars of the upper prefabricated component and the lower prefabricated component are respectively tightened with the sleeves, the locking nut on the I-shaped connecting rod is tightened and fixed with the sleeves, and finally the connection of the upper and lower steel bars is completed. The utility model uses the gap between the two sleeves and the I-shaped connector to solve the allowable error of the longitudinal steel bars in the upper and lower prefabricated vertical components of the assembled structure caused by production and construction.

Claims

1. A steel bar connector for an assembled prefabricated component, characterized in that: It includes two sleeves and an I-shaped connecting rod, both ends of the I-shaped connecting rod are provided with bosses, one end of the two sleeves is provided with a limiting step for positioning the bosses at both ends of the I-shaped connecting rod to form a stepped through hole, and the other end is provided with a straight tube section for sleeved on the steel bars to be connected, the straight tube section is provided with an internal thread that matches the thread of the steel bars to be connected, the bosses at both ends of the I-shaped connecting rod are respectively matched with the stepped through holes of the two sleeves, and an adjustment gap is left between the bosses at both ends of the I-shaped connecting rod and the stepped through holes; the rod portion of the I-shaped connecting rod is also provided with an external thread, and the rod portion of the I-shaped connecting rod is sleeved with a locking nut that matches the external thread.

2. The steel bar connector of an assembled prefabricated component according to claim 1, characterized in that: The two sleeves are both made of steel sleeves, and the I-shaped connecting rod is made of high-strength connecting steel bars.

3. The steel bar connector of the assembled prefabricated component according to claim 1, characterized in that: Two locking nuts matched with the external threads are sleeved on the rod portion of the I-shaped connecting rod.

4. The steel bar connector of the assembled prefabricated component according to claim 1, characterized in that: A tapered transition section is provided between the straight section of the sleeve and the stepped through hole.

5. The steel bar connector for prefabricated components according to claim 1 or 3, characterized in that: The outer diameter of the locking nut is larger than the minor diameter of the stepped through hole.

6. The steel bar connector for prefabricated components according to claim 1 or 3, characterized in that: It also includes a gasket, which is arranged between the locking nut and the limiting step.

7. The steel bar connector of the assembled prefabricated component according to claim 1, characterized in that: The length of the I-shaped connecting rod is greater than or equal to 30 cm.

8. The steel bar connector of the assembled prefabricated component according to claim 1, characterized in that: The clearance adjustment gap between the rod portion of the I-shaped connecting rod and the stepped through hole is smaller than the width of the boss of the I-shaped connecting rod.

9. An assembled prefabricated component using a steel bar connector, comprising a first prefabricated component and a second prefabricated component, characterized in that: The steel bar connector according to any one of claims 1 to 8 is used between the steel bars to be connected of the first prefabricated part and the steel bars to be connected of the second prefabricated part.

10. The assembled prefabricated component using a steel bar connector according to claim 9, characterized in that: The outer concrete layer of the steel bars to be connected of the first prefabricated part is provided with a first groove for installing a steel bar connector, and the outer concrete layer of the steel bars to be connected of the second prefabricated part is provided with a second groove for installing a steel bar connector, and the straight sections of the two sleeves of the steel bar connector respectively cooperate with the first groove and the second groove.

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