Reinforcing steel bar prestress anti-breaking connecting structure
By designing a prestressed break-off-proof connection structure of steel bars, using connecting shells, bidirectional screws, arc-shaped strips and other components, the double fixation of steel bars is achieved, solving the problem of fracture and deformation at the steel bars connection and improving operational safety.
Patent Information
- Application Number
- CN202421201447.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-29
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-05-29
AI Technical Summary
During the existing prestressed tensioning of steel bars, fracture deformation is prone to occur at the connections of steel bars, and multiple safety connections cannot be achieved, which affects operational safety.
A prestressed break-off-proof connecting structure of steel bars is designed, using a combination of connecting shell, bidirectional screw, arcuate bars, snap teeth, gears, wedge blocks and rotation shafts. The arcuate bars are driven to be engaged on the surface of the steel bars through the bidirectional screw. And double connection and fixation are achieved through gears and wedge blocks.
It effectively avoids the connection falling off caused by steel bar breaks, ensures the stability of steel bar connections, and improves operational safety.
Smart Images
Figure CN222435702U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of steel bar connection, in particular to a steel bar prestressed anti-break connection structure. Background Art
[0002] Prestressed steel bars are compressive stresses applied to the concrete of structural members by pre-tensioning or post-tensioning before the use of structural members. In reinforced concrete structures, members will have cracks when they are under tension. Although it does not affect safety, it does not look good. Tension is applied to the steel bars first, and then concrete is poured. When the strength reaches the required level, the steel bars are loosened to allow the steel bars to shrink and offset the tension of the normal use load (pre-tensioning method). Post-tensioning method is to pour concrete with reserved holes, add tensile steel bars after forming, and then anchor them at both ends of the member with equipment.
[0003] When implementing this technical solution, there are at least the following defects: the existing steel bars are usually prestressed by tensioning machines, but during the prestressing process, the steel bars are prone to fracture and deformation at the joints, and it is impossible to make multiple safe connections at the joints of the steel bars, which affects the safety of the workers and urgently needs to be improved. Therefore, we propose a steel bar prestressed anti-fracture connection structure. Utility Model Content
[0004] The utility model aims to provide a steel bar prestressed anti-break connection structure, which solves the problems raised in the background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a prestressed steel bar anti-break connection structure, comprising a connecting shell, a fixing strip is welded on one side of the inner cavity of the connecting shell, a sliding groove is opened on one side of the fixing strip, a bidirectional screw rod is penetrated through one side of the connecting shell, gears are fixedly installed at both ends of the bidirectional screw rod, arc strips are arranged on both sides of the inner cavity of the connecting shell, a sliding block is fixedly installed on one end of the arc strip, racks are slidably installed on both sides of the inner cavity of the connecting shell, and wedge blocks are arranged on the upper and lower sides of the other end of the connecting shell.
[0006] By adopting the above technical scheme, the bidirectional screw rod can cooperate with the screw rod sleeve to drive the arc strip to move toward the middle, so that the teeth on the arc strip can be engaged with the toothed cross ribs on the surface of the steel bar, thereby fixing the connection of the end of the steel bar entering the connecting shell; and during the rotation of the bidirectional screw rod, the gear can drive the rack to move to the left, so that the rack pushes the wedge block, so that the wedge block rotates toward the middle, and then the wedge block is against the steel bar section that has not entered the connecting shell, thereby completing the double connection and fixation of the steel bar in a linked manner, thereby ensuring the stability of the steel bar connection and avoiding the connection falling off due to steel bar breakage.
[0007] Optionally, a plurality of latching teeth are arranged on the inner side of the other end of the arc-shaped strip, and the latching teeth are equidistantly distributed.
[0008] By adopting the above technical solution, it is convenient to arrange the clamping teeth so as to facilitate the clamping teeth to engage with the toothed transverse ribs on the surface of the steel bar, thereby ensuring the connection stability between the arc strip and the steel bar.
[0009] Optionally, the size of the slider is matched with the size of the slide groove, and the slider is slidably connected to the slide groove.
[0010] By adopting the above technical solution, the slider cooperates with the slide groove, so as to ensure the stability of the movement of the arc strip, thereby ensuring the connection and clamping effect of the steel bars.
[0011] Optionally, a screw sleeve is fixedly mounted on one end of the arc-shaped bar, and the bidirectional screw is threadedly connected to the screw sleeve.
[0012] By adopting the above technical solution, it is convenient to cooperate with the bidirectional screw rod and the screw rod sleeve, so that the two arc-shaped bars can be driven to clamp and limit the steel bars at the same time.
[0013] Optionally, the rack is arranged on the rear side of the gear, and the rack is meshed with the gear.
[0014] By adopting the above technical solution, it is convenient to cooperate with the gear through the rack, so that the wedge block can be driven to rotate by the rack.
[0015] Optionally, one end of the wedge block is rotatably connected to the connecting shell via a rotating shaft.
[0016] By adopting the above technical solution and setting the rotating shaft, it is convenient for the wedge block to rotate on the left side of the connecting shell.
[0017] Compared with the prior art, the technical solution of this application has the following beneficial effects:
[0018] The technical solution of the present application, through the setting of the connecting shell, bidirectional screw rod, arc strip, clamping teeth, gear, wedge block and rotating shaft, can enable the bidirectional screw rod to cooperate with the screw rod sleeve to drive the arc strip to move toward the middle, so that the clamping teeth on the arc strip are engaged with the toothed cross ribs on the surface of the steel bar, thereby fixing the connection of the end of the steel bar entering the connecting shell; and during the rotation of the bidirectional screw rod, the gear can drive the rack to move to the left, so that the rack pushes the wedge block, so that the wedge block rotates toward the middle, and then the wedge block is against the steel bar section that has not entered the connecting shell, thereby completing the double connection and fixation of the steel bar in a linked manner, thereby ensuring the stability of the steel bar connection and avoiding the connection falling off due to steel bar breakage. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:
[0020] Figure 1 This is a schematic diagram of the overall structure of a prestressed steel bar anti-break connection structure of the utility model;
[0021] Figure 2 It is a schematic diagram of the partially enlarged structure of the A position of a prestressed steel bar anti-break connection structure of the utility model;
[0022] Figure 3 The utility model is a schematic diagram of the side cross-sectional structure of the arc strip and the clamping teeth of a prestressed steel bar anti-break connection structure.
[0023] In the figure: 1, connecting shell; 11, fixing bar; 12, slide groove; 2, bidirectional screw; 21, arc bar; 22, screw sleeve; 23, latching tooth; 24, slider; 3, rack; 31, gear; 32, wedge block; 4, rotating shaft. DETAILED DESCRIPTION
[0024] See also Figure 1-3 The utility model provides a technical solution: a steel bar prestressed anti-break connection structure, including a connection shell 1, a fixing strip 11 is welded on one side of the inner cavity of the connection shell 1, a slide groove 12 is opened on one side of the fixing strip 11, a bidirectional screw rod 2 is penetrated on one side of the connection shell 1, gears 31 are fixedly installed at both ends of the bidirectional screw rod 2, arc strips 21 are arranged on both sides of the inner cavity of the connection shell 1, a slider 24 is fixedly installed on one end of the arc strip 21, racks 3 are slidably installed on both sides of the inner cavity of the connection shell 1, and wedge blocks 32 are arranged on the upper and lower sides of the other end of the connection shell 1. A screw sleeve 22 is fixedly installed at one end of the arc strip 21, and the bidirectional screw rod 2 is threadedly connected to the screw sleeve 22, so that the bidirectional screw rod 2 can cooperate with the screw sleeve 22, thereby driving the two arc strips 21 to clamp and limit the steel bars at the same time. The rack 3 is arranged on the rear side of the gear 31, and the rack 3 is meshed with the gear 31, so that the rack 3 can cooperate with the gear 31, so that the wedge block 32 can be driven to rotate through the rack 3. One end of the wedge block 32 is rotatably connected to the connecting shell 1 through the rotating shaft 4. Through the setting of the rotating shaft 4, the wedge block 32 is convenient to rotate on the left side of the connecting shell 1.
[0025] A plurality of latching teeth 23 are arranged on the inner side of the other end of the arc strip 21, and the latching teeth 23 are evenly spaced, so that the latching teeth 23 can be easily engaged with the toothed cross ribs on the surface of the steel bar through the arrangement of the latching teeth 23, thereby ensuring the connection stability between the arc strip 21 and the steel bar.
[0026] The size of the slider 24 matches that of the slide groove 12, and the slider 24 is slidably connected to the slide groove 12. The slider 24 cooperates with the slide groove 12 to ensure the stability of the movement of the arc strip 21, thereby ensuring the connection and clamping effect of the steel bars.
[0027] When connecting, first insert the steel bar into the connecting shell 1, connect one end of the connecting shell 1 to the output end of the tensioning machine, and then rotate the bidirectional screw rod 2. The bidirectional screw rod 2 cooperates with the screw rod sleeve 22 to drive the arc strip 21 to move toward the middle, so that the clamping teeth 23 on the arc strip 21 are engaged with the toothed cross ribs on the surface of the steel bar, thereby fixing the connection of the end of the steel bar entering the connecting shell 1. At the same time, during the rotation of the bidirectional screw rod 2, the gear 31 on the bidirectional screw rod 2 will follow the rotation, and the gear 31 will drive the rack 3 to move to the left, so that the rack 3 pushes the wedge block 32, so that the wedge block 32 rotates toward the middle, and then the wedge block 32 is against the steel bar section that has not entered the connecting shell 1, thereby completing the double connection and fixation of the steel bar in linkage, thereby ensuring the stability of the steel bar connection and avoiding the connection falling off caused by steel bar breakage.
Claims
1. A prestressed steel bar anti-break connection structure, comprising a connection shell (1), characterized in that: A fixing strip (11) is welded to one side of the inner cavity of the connecting shell (1), and a sliding groove (12) is opened on one side of the fixing strip (11). A bidirectional screw rod (2) is provided through one side of the connecting shell (1), and gears (31) are fixedly installed at both ends of the bidirectional screw rod (2). Arc strips (21) are provided on both sides of the inner cavity of the connecting shell (1), and a slider (24) is fixedly installed at one end of the arc strip (21). Racks (3) are slidably installed on both sides of the inner cavity of the connecting shell (1), and wedge blocks (32) are provided on the upper and lower sides of the other end of the connecting shell (1).
2. A prestressed steel bar anti-break connection structure according to claim 1, characterized in that: A plurality of latching teeth (23) are arranged on the inner side of the other end of the arc-shaped strip (21), and the latching teeth (23) are equidistantly distributed.
3. A prestressed steel bar anti-break connection structure according to claim 1, characterized in that: The size of the sliding block (24) matches the size of the sliding groove (12), and the sliding block (24) is slidably connected to the sliding groove (12).
4. A prestressed steel bar anti-break connection structure according to claim 1, characterized in that: A screw sleeve (22) is fixedly mounted on one end of the arc-shaped strip (21), and the bidirectional screw (2) is threadedly connected to the screw sleeve (22).
5. The prestressed steel bar anti-break connection structure according to claim 1, characterized in that: The rack (3) is arranged on the rear side of the gear (31), and the rack (3) is meshed with the gear (31).
6. A prestressed steel bar anti-break connection structure according to claim 1, characterized in that: One end of the wedge block (32) is rotatably connected to the connecting shell (1) via a rotating shaft (4).