Quick connecting device for large-dip-angle bridge tower steel reinforcement framework

Abstract

The utility model belongs to the technical field of bridge construction, and particularly relates to a quick connecting device for a large-dip-angle bridge tower steel reinforcement framework. The utility model provides a quick connecting device for a large-dip-angle bridge tower steel bar framework, which comprises longitudinal connecting units arranged at the joint of the end parts of an upper steel bar and a lower steel bar and transverse connecting units for connecting two adjacent longitudinal connecting units, each transverse connecting unit comprises a first threaded sleeve, a second threaded sleeve, a first threaded rod, an inner hole and a second threaded rod, wherein the first threaded sleeve and the second threaded sleeve are arranged on the two adjacent longitudinal connecting units respectively, the first threaded rod is arranged in the first threaded sleeve in a screwed mode, the inner hole is formed in the end of the first threaded rod, and one end of the second threaded rod is arranged in the second threaded sleeve in a screwed mode while the other end of the second threaded rod is slidably connected with the inner hole. And the adjusting fastening assembly is used for locking the position of the second threaded rod in the inner hole, so that the steel bar framework connecting device can be suitable for connection of steel bar frameworks with various transverse distances such as a large-dip-angle bridge, connection of adjacent steel bars is locked on the basis that connection of upper and lower steel bars is completed, the stability of the bridge is further enhanced, and the service life of the bridge is prolonged. And the construction efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge construction, and particularly relates to a rapid connection device for a steel bar skeleton of a large-inclination bridge tower. Background Technique

[0002] The steel bar skeleton of a large-inclination bridge tower is usually composed of multiple steel profiles (such as steel plates, steel pipes, steel bars, etc.) combined in a specific structural manner, and has high bending resistance, shear resistance and torsional resistance. This design can effectively reduce the self-weight of the structure, reduce the construction cost, and can simultaneously meet special requirements such as large span and large inclination. Therefore, there are problems of relatively complex connection methods and low connection efficiency between conventional large-inclination bridge tower steel bar skeletons.

[0003] The Chinese utility model patent with the patent announcement number CN220247392U and the announcement date of December 26, 2023 discloses a new type of rapid connection device, which includes upper steel bar skeleton longitudinal bars for forming an upper formed steel bar skeleton, lower steel bar skeleton longitudinal bars for forming a lower formed steel bar skeleton, and a locking cylinder sleeved on the upper steel bar skeleton longitudinal bars and the lower steel bar skeleton longitudinal bars. A lower connection thread is arranged on one side of the lower steel bar skeleton longitudinal bar located inside the locking cylinder, and an upper connection thread is arranged on one side of the upper steel bar skeleton longitudinal bar located inside the locking cylinder. The characteristics are as follows: a split sleeve is screwed on the upper steel bar skeleton longitudinal bar through the upper connection thread, and the lower part of the split sleeve is screwed on the lower connection thread; the split sleeve is located inside the locking cylinder, and a locking nut is screwed on the upper part of the split sleeve, and the locking nut abuts against the upper end of the locking cylinder.

[0004] The general usage method and advantages of the new type of rapid connection device in this Chinese utility model patent are as follows: First, suspend the upper formed steel bar skeleton above the lower formed steel bar skeleton and align the upper steel bar skeleton longitudinal bars with the lower steel bar skeleton longitudinal bars. Then, sleeved the locking nut and the locking cylinder on the upper steel bar skeleton longitudinal bars, and the locking nut is located above the locking cylinder. Then, cover the two half pipes on the lower connection thread and the upper connection thread, so that the internal thread engages with the lower connection thread and the upper connection thread. Then, move the locking cylinder downward so that the inner wall of the locking cylinder abuts against the lower side of the outer wall of the half pipe and forms a structure in which two conical surfaces abut against each other. Then, screw the locking nut on the external thread and rotate the locking nut to push the locking cylinder downward, so that the internal thread tightly engages with the lower connection thread and the upper connection thread, realizing the connection and fixation of the upper steel bar skeleton longitudinal bars and the lower steel bar skeleton longitudinal bars; the advantage is to realize the connection and fixation of the upper steel bar skeleton longitudinal bars and the lower steel bar skeleton longitudinal bars, simplify the complexity of the traditional sleeve connection, facilitate the connection operation, and reduce the connection cost.

[0005] However, during the actual use of this new type of quick connection device, there are at least the following deficiencies, that is, the technical problems to be solved by the present utility model: The new type of quick connection device can only achieve the connection of the upper and lower steel bar skeletons. However, for the steel bar skeletons of large inclination bridges, there are a large number of transverse connections and the spacing of the transverse connections varies in a variety of situations, and this connection device is not applicable to the connection of the steel bar skeletons of large inclination bridges.

[0006] Therefore, in summary, there is an urgent need for a steel bar skeleton connection device that can connect bidirectionally and is applicable to various spacings to solve such problems. Summary of the Utility Model

[0007] The present utility model provides a quick connection device for the steel bar skeletons of large inclination bridge towers, including a longitudinal connection unit arranged at the connection of the ends of the upper and lower steel bars and a transverse connection unit for connecting adjacent two longitudinal connection units. The transverse connection unit includes a first threaded sleeve and a second threaded sleeve respectively arranged on adjacent two longitudinal connection units, a first threaded rod screwed in the first threaded sleeve, an inner hole arranged at the end of the first threaded rod, a second threaded rod with one end screwed in the second threaded sleeve and the other end slidably connected to the inner hole, and an adjusting and fastening assembly for locking the position of the second threaded rod in the inner hole, so that: The present utility model is applicable to the connection of steel bar skeletons with various transverse spacings such as large inclination bridges. On the basis of completing the connection of the upper and lower steel bars, the connection of adjacent steel bars is also locked, further strengthening the stability of the bridge and improving the construction efficiency.

[0008] The technical solution adopted by the present utility model to solve the above problems is: A quick connection device for the steel bar skeletons of large inclination bridge towers, including a longitudinal connection unit arranged at the connection of the ends of the upper and lower steel bars, and a transverse connection unit for connecting adjacent two longitudinal connection units; The transverse connection unit includes a first threaded sleeve and a second threaded sleeve respectively arranged on adjacent two longitudinal connection units, a first threaded rod screwed in the first threaded sleeve, an inner hole arranged at the end of the first threaded rod away from the first threaded sleeve, a second threaded rod with one end screwed in the second threaded sleeve and the other end slidably connected to the inner hole, and an adjusting and fastening assembly arranged at the connection of the first threaded rod and the second threaded rod for locking the position of the second threaded rod in the inner hole.

[0009] A further preferred technical solution lies in: The adjusting and fastening assembly includes an external threaded cylinder arranged at the end of the first threaded rod and having an inner hole communicating with the inner hole, a first nut screwed on the external threaded cylinder, and a shrinkage groove arranged at the end of the external threaded cylinder away from the first threaded rod and communicating with the inner hole.

[0010] A further preferred technical solution lies in that: the adjusting and fastening assembly further includes a protrusion provided on the side wall of the inner hole.

[0011] A further preferred technical solution lies in that: the adjusting and fastening assembly further includes a second nut screwed on the end of the first threaded rod close to the first threaded sleeve, and a third nut screwed on the end of the second threaded rod close to the second threaded sleeve.

[0012] A further preferred technical solution lies in that: the longitudinal connection unit includes a first arc-shaped plate and a second arc-shaped plate which are oppositely arranged and connected to form a closed cylinder, a hinge assembly provided at one connection of the first arc-shaped plate and the second arc-shaped plate, and a locking assembly provided at the other connection of the first arc-shaped plate and the second arc-shaped plate.

[0013] A further preferred technical solution lies in that: the locking assembly includes two fixing plates provided on the side end of the first arc-shaped plate and parallel to each other, a fixed shaft with both ends connected to the two fixing plates respectively, a rotating cylinder rotatably arranged on the fixed shaft, a third threaded rod vertically arranged on the surface of the rotating cylinder, a clamping block provided at the end of the second arc-shaped plate, a connection groove provided on the clamping block for passing through the third threaded rod, and a fourth nut provided at the end of the third threaded rod far from the rotating cylinder and abutting against the surface of the clamping block.

[0014] A further preferred technical solution lies in that: the hinge assembly includes a sleeve provided on the side end of the first arc-shaped plate, a fixed block provided on the side end of the second arc-shaped plate, and a rotating shaft installed on the fixed block and rotatably connected to the sleeve.

[0015] A further preferred technical solution lies in that: the longitudinal connection unit further includes inner gaskets provided on the inner side surfaces of the first arc-shaped plate and the second arc-shaped plate.

[0016] A further preferred technical solution lies in that: the locking assembly further includes an anti-slip layer provided in the connection groove.

[0017] A further preferred technical solution lies in that: the first threaded rod and the outer threaded cylinder are integrally formed. Description of the Drawings

[0018] Figure 1 is the overall schematic diagram of the present utility model Figure 1 ;

[0019] Figure 2 is the overall schematic diagram of the present utility model Figure 2 ;

[0020] Figure 3 is the semi-sectional schematic diagram of the transverse connection unit of the present utility model;

[0021] Figure 4 Schematic diagram of the longitudinal connection unit of the present utility model;

[0022] Figure 5 Partial schematic diagram of the locking component of the present utility model;

[0023] Figure 6 Partial schematic diagram of the hinge component of the present utility model.

[0024] In the figure, the meanings of the reference numerals are as follows:

[0025] Steel bar a;

[0026] Longitudinal connection unit 1, transverse connection unit 2;

[0027] First arc-shaped plate 11, second arc-shaped plate 12, hinge component 13, locking component 14, inner gasket 15, first threaded sleeve 21, second threaded sleeve 22, first threaded rod 23, inner hole 24, second threaded rod 25, adjusting and fastening component 26;

[0028] Sleeve 131, fixing block 132, rotating shaft 133, fixing plate 141, fixing shaft 142, rotating cylinder 143, third threaded rod 144, clamping block 145, connecting groove 146, fourth nut 147, external threaded sleeve 261, first nut 262, shrinking groove 263, protrusion 264, second nut 265, third nut 266. Specific embodiments

[0029] The following will describe in detail the embodiments of the present utility model with reference to the accompanying drawings. The following is only the preferred embodiment of the present utility model, and does not limit the scope of the present utility model.

[0030] In this specification, the orientation terms such as up, down, left, right, front, back, front side, back side, top, bottom, etc. mentioned or possibly mentioned are defined with respect to the structures shown in the respective drawings. The terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component. They are relative concepts, and thus may change accordingly according to their different positions and different usage states. Therefore, these or other orientation terms should not be interpreted as restrictive terms.

[0031] As shown in the atta Figures 1-6As shown in the figure, a quick connection device for the steel bar framework of a large inclination pylon includes a longitudinal connection unit 1 arranged at the connection of the ends of two upper and lower steel bars a, and a transverse connection unit 2 for connecting two adjacent longitudinal connection units 1; the transverse connection unit 2 includes a first threaded sleeve 21 and a second threaded sleeve 22 respectively arranged on two adjacent longitudinal connection units 1, a first threaded rod 23 screwed in the first threaded sleeve 21, an inner hole 24 arranged at the end of the first threaded rod 23 away from the first threaded sleeve 21, a second threaded rod 25 with one end screwed in the second threaded sleeve 22 and the other end slidably connected to the inner hole 24, and an adjusting and fastening assembly 26 arranged at the connection of the first threaded rod 23 and the second threaded rod 25 for locking the position of the second threaded rod 25 in the inner hole 24.

[0032] In this embodiment, the general usage method of this quick connection device is as follows:

[0033] The longitudinal connection unit 1 is arranged at the connection of the ends of two upper and lower steel bars a to fix the lower end of the upper steel bar head and the upper end of the lower steel bar head together to achieve longitudinal connection. Then, the transverse connection unit 2 is used to conduct transverse connection on two adjacent groups of upper and lower steel bars a. The connection length of the transverse connection unit 2 is adjustable, and it can well adapt to the large inclination pylon with diversified steel bar framework spacings caused by inclination; according to the on-site installation situation, the second threaded rod 25 slides in the end of the first threaded rod 23 provided with the inner hole 24. The other end of the first threaded rod 23 is screwed with the first threaded sleeve 21 arranged on the longitudinal connection unit 1, and the other end of the second threaded rod 25 is screwed with the second threaded sleeve 22 on another adjacent longitudinal connection unit 1. Therefore, by changing the relative positions of the first threaded rod 23 and the second threaded rod 25, the overall length of the transverse connection unit 2 can be adjusted. After adjusting to a suitable length adapted to the actual on-site situation, the adjusting and fastening assembly 26 is locked to fix the relative positions of the first threaded rod 23 and the second threaded rod 25.

[0034] As a preference of this embodiment, the adjusting and fastening assembly 26 includes an external threaded cylinder 261 arranged at the end of the first threaded rod 23 and having an inner hole communicating with the inner hole 24, a first nut 262 screwed on the external threaded cylinder 261, and a shrinkage groove 263 arranged at the end of the external threaded cylinder 261 away from the first threaded rod 23 and communicating with the inner hole 24; the adjusting and fastening assembly 26 further includes a protrusion 264 arranged on the side wall of the inner hole 24, a second nut 265 screwed on the first threaded rod 23 near the end of the first threaded sleeve 21, and a third nut 266 screwed on the second threaded rod 25 near the end of the second threaded sleeve 22; the first threaded rod 23 and the external threaded cylinder 261 are integrally formed.

[0035] In this embodiment, a specific structure of the adjusting and fastening assembly 26 is disclosed; an external thread cylinder 261 is integrally formed at the end of the first threaded rod 23 away from the first threaded sleeve 21. The inner hole 24 penetrates through the entire external thread cylinder 261 and extends into the first threaded rod 23. A first nut 262 is screwed onto the surface of the external thread cylinder 261, and a contraction groove 263 is formed along the axial direction of the external thread cylinder 261. Preferably, there are two or more contraction grooves 263, and the quantity is controlled so as not to affect the rotation of the first nut 262 on the surface of the external thread cylinder 261. The notch extends to the end of the external thread cylinder 261 away from the first threaded rod 23, so that the external thread cylinder 261 is claw-shaped and incorporated into the second threaded rod 25. The surface of one end of the second threaded rod 25 close to the external thread cylinder 261 is preferably set as a smooth surface for easy sliding in the inner hole 24. A plurality of protrusions 264 are provided on the inner hole side wall to facilitate the first nut 262 to fix the position of the second threaded rod 25. The second nut 265 abuts against the surface of the first threaded sleeve 21 to reinforce the stability of the first threaded rod 23. Similarly, the third nut 266 abuts against the surface of the second threaded sleeve 22 to jointly provide a stable connection fulcrum for the entire horizontal connection unit 2. After sliding the second threaded rod 25 to a suitable position, rotate the first nut 262 to tighten the inner diameter of the external thread cylinder 261, increasing the friction force of the cylinder wall surface on the second threaded rod 25. At the same time, the protrusions 264 on the inner hole 24 side wall squeeze the surface of the second threaded rod 25, so that the second threaded rod 25 is fixed in the position of the inner hole 24, and the horizontal spacing between adjacent groups of steel bars is fixed.

[0036] As a preference of this embodiment, the longitudinal connection unit 1 includes a first arc-shaped plate 11 and a second arc-shaped plate 12 which are oppositely arranged and connected to form a closed cylinder, a hinge assembly 13 arranged at one connection of the first arc-shaped plate 11 and the second arc-shaped plate 12, a locking assembly 14 arranged at the other connection of the first arc-shaped plate 11 and the second arc-shaped plate 12, and an inner gasket 15 arranged on the inner side surfaces of the first arc-shaped plate 11 and the second arc-shaped plate 12.

[0037] In this embodiment, the arc-shaped plate 11 and the second arc-shaped plate 12 are arranged in a half-cylindrical structure. The first arc-shaped plate 11 and the second arc-shaped plate 12 are connected together to form an entire cylindrical structure. The hinge assembly 13 and the locking assembly 14 are respectively arranged at the two connections. By rotating the hinge assembly 13, the first arc-shaped plate 11 and the second arc-shaped plate 12 are attached to the surface of the steel bar, and the locking assembly 14 is connected to fix the position of the steel bar. The inner gasket 15 is arranged on the inner side surfaces of the first arc-shaped plate 11 and the second arc-shaped plate 12 and is pressed against the surface of the steel bar to ensure a tight connection at the connection between the first arc-shaped plate 11 and the second arc-shaped plate 12. The inner gasket 15 can be an anti-slip gasket made of materials such as rubber and flexible graphite.

[0038] As a preference of this embodiment, the locking assembly 14 includes two fixing plates 141 which are arranged on the side end of the first arc-shaped plate 11 and are parallel to each other, a fixing shaft 142 with two ends respectively connected to the two fixing plates 141, a rotating cylinder 143 rotatably arranged on the fixing shaft 142, a third threaded rod 144 vertically arranged on the surface of the rotating cylinder 143, a clamping block 145 arranged on the end of the second arc-shaped plate 12, a connecting groove 146 arranged on the clamping block 145 for passing through the third threaded rod 144, a fourth nut 147 arranged on the end of the third threaded rod 144 far away from the rotating cylinder 143 and abutting against the surface of the clamping block 145, and an anti-slip layer arranged in the connecting groove 146.

[0039] In this embodiment, a specific structure of a locking assembly 14 is disclosed. The first arc-shaped plate 11 and the second arc-shaped plate 12 respectively have two connection points, and the locking assembly 14 is arranged at the first connection point; two parallel fixing plates 141 are arranged on the side end of the first arc-shaped plate 11 close to the first connection point for installing the fixing shaft 142. The fixing shaft 142 is preferably arranged parallel to the longitudinal side of the first arc-shaped plate 11. The rotating cylinder 143 is sleeved on the fixing shaft 142 and rotates. Further, bearings can be arranged in the rotating cylinder 143 and the fixing shaft 142 to increase the structural stability. The third threaded rod 144 rotates on the plane perpendicular to the first arc-shaped plate 11 under the drive of the rotating cylinder 143. By rotating the third threaded rod 144 to the end close to the second arc-shaped plate 12 and extending it into the connecting groove 146 of the clamping block 145 arranged on the second arc-shaped plate 12 close to the first connection point, and rotating the fourth nut 147 connected to the third threaded rod 144, the outer diameter of the fourth nut 147 is larger than the inner diameter of the connecting groove 146, so that the fourth nut 147 abuts against the side surface of the clamping block 145 far away from the rotating cylinder 143. The pressure provided by the fourth nut 147 increases the friction between the third threaded rod 144 and the connecting groove 146 to overcome the lateral movement, completing the locking connection of the locking assembly 14. An anti-slip layer is preferably arranged in the connecting groove 146 to further ensure the stability of the connection.

[0040] As a preference of this embodiment, the hinge assembly 13 includes a sleeve 131 arranged on the side end of the first arc-shaped plate 11, a fixing block 132 arranged on the side end of the second arc-shaped plate 12, and a rotating shaft 133 installed on the fixing block 132 and rotatably connected to the sleeve 131.

[0041] In this embodiment, the hinge assembly 13 is arranged at the second connection of the first arc-shaped plate 11 and the second arc-shaped plate 12. The rotating shaft 133 is an L-shaped shaft, the lower end of which is connected to the fixed block 132 arranged on the second arc-shaped plate 12, and the upper end of which is rotatably connected to the sleeve 131 arranged on the first arc-shaped plate 11, so that the first arc-shaped plate 11 and the second arc-shaped plate 12 can rotate relatively.

[0042] Compared with the prior art, the advantages of this embodiment are as follows: The cooperation between the horizontal connection unit and the vertical connection unit is used to fix the distance between the upper and lower two steel bars and adjacent two groups of steel bars, which helps to improve the connection stability between the steel bars. At the same time, it is applicable to the construction situation where various sizes of steel bars are required to adapt to different complex spacings, solves the problem that the connection method between the steel bar skeletons of the conventional large-inclination bridge tower is relatively complex, realizes the rapid connection between the steel bar skeletons of the bridge tower, and thus improves the connection efficiency of the skeletons.

[0043] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art in the said technical field, various modifications can be made without departing from the gist of the present invention. These are all non-creative modifications and are protected by the patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A quick connection device for the steel bar framework of a large-inclination bridge tower, characterized in that: It includes a longitudinal connection unit (1) arranged at the end connection of the upper and lower steel bars (a), and a transverse connection unit (2) for connecting two adjacent longitudinal connection units (1); the transverse connection unit (2) includes a first threaded sleeve (21) and a second threaded sleeve (22) respectively arranged on two adjacent longitudinal connection units (1), a first threaded rod (23) screwed in the first threaded sleeve (21), an inner hole (24) arranged at the end of the first threaded rod (23) far from the first threaded sleeve (21), a second threaded rod (25) with one end screwed in the second threaded sleeve (22) and the other end slidably connected to the inner hole (24), and an adjustment and fastening component (26) arranged at the connection of the first threaded rod (23) and the second threaded rod (25) for locking the position of the second threaded rod (25) in the inner hole (24).

2. The rapid connection device for the steel bar framework of a large-inclination bridge tower according to claim 1, characterized in that: The adjustment and fastening component (26) includes an external threaded cylinder (261) arranged at the end of the first threaded rod (23) and having an inner hole communicating with the inner hole (24), a first nut (262) screwed on the external threaded cylinder (261), and a shrinkage groove (263) arranged at the end of the external threaded cylinder (261) far from the first threaded rod (23) and communicating with the inner hole (24).

3. The quick connection device for the steel bar framework of a large inclination pylon according to claim 2, wherein: The adjustment and fastening component (26) further includes a protrusion (264) arranged on the side wall of the inner hole (24).

4. The quick connection device for the steel bar framework of a large-inclination bridge tower according to claim 3, characterized in that: The adjustment and fastening component (26) further includes a second nut (265) screwed on the first threaded rod (23) near the end of the first threaded sleeve (21), and a third nut (266) screwed on the second threaded rod (25) near the end of the second threaded sleeve (22).

5. The quick connection device for the steel bar framework of a large-inclination bridge tower according to claim 1, characterized in that: The longitudinal connection unit (1) includes a first arc-shaped plate (11) and a second arc-shaped plate (12) arranged oppositely and connected to form a closed cylinder, a hinge component (13) arranged at one connection of the first arc-shaped plate (11) and the second arc-shaped plate (12), and a locking component (14) arranged at the other connection of the first arc-shaped plate (11) and the second arc-shaped plate (12).

6. The rapid connection device for the steel bar framework of a large-inclination bridge tower according to claim 5, characterized in that: The locking component (14) includes two fixing plates (141) arranged on the side end of the first arc-shaped plate (11) and parallel to each other, a fixing shaft (142) with both ends connected to the two fixing plates (141) respectively, a rotating cylinder (143) rotatably arranged on the fixing shaft (142), a third threaded rod (144) vertically arranged on the surface of the rotating cylinder (143), a clamping block (145) arranged at the end of the second arc-shaped plate (12), a connection groove (146) arranged on the clamping block (145) for passing through the third threaded rod (144), and a fourth nut (147) arranged at the end of the third threaded rod (144) far from the rotating cylinder (143) and abutting against the surface of the clamping block (145).

7. A quick connection device for the steel bar framework of a large inclination pylon according to claim 5, characterized in that: The hinge assembly (13) includes a sleeve (131) provided at the side end of the first arc-shaped plate (11), a fixed block (132) provided at the side end of the second arc-shaped plate (12), and a rotating shaft (133) mounted on the fixed block (132) and rotatably connected to the sleeve (131).

8. The quick connection device for the steel bar framework of a large inclination pylon according to claim 5, characterized in that: The longitudinal connection unit (1) further includes an inner gasket (15) provided on the inner side surfaces of the first arc-shaped plate (11) and the second arc-shaped plate (12).

9. The quick connection device for the steel bar framework of a large inclination pylon according to claim 6, characterized in that: The locking assembly (14) further includes an anti-slip layer provided in the connection groove (146).

10. A quick connection device for a steel bar framework of a large inclination pylon according to claim 2, characterized in that: The first threaded rod (23) and the external threaded cylinder (261) are integrally formed.

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