A cable anchoring device for reducing radial shear stress of steel rope

Abstract

This invention discloses a cable anchoring device for reducing radial shear stress in steel cables, belonging to the technical field of bridge cable anchoring devices. The device uses several fixed cylinders rotatably mounted on an anchoring plate to fix the steel cable. After the steel cable passes through the cable hole, tightening the locking screw moves the abutment towards the cable hole, causing the arc-shaped locking plate to clamp the four sides of the steel cable. The locked steel cable is coaxial with the cable hole of the fixed cylinder and is firmly fixed. After the steel cable is taut, the fixed cylinder rotates, aligning the cable hole and the steel cable in a straight line. This avoids misalignment of the steel cable during anchoring due to offset at different positions or misalignment of the wire and anchor point caused by installation tolerances; it also avoids radial shear stress in the steel cable caused by misalignment; it maintains straight traction on the steel cable, making the cable anchoring more stable; and each steel cable can be adjusted individually by rotating each fixed cylinder. The steel cable can be easily replaced individually by loosening the fixed cylinder.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge stay cable anchoring devices, and in particular relates to a stay cable anchoring device capable of reducing radial shear stress of a steel cable. Background Art

[0002] The bridge's cable-stayed structure consists of several steel cables that form a steel cable bundle, which pulls the bridge deck onto the piers through three-point support. The fixing and connection of the steel cables is a key construction structure of the bridge and a key structure to ensure the service life and bearing capacity of the bridge.

[0003] In the cable-stayed structure, holes are opened on the bridge towers to allow steel rope bundles to pass through both sides of the bridge towers. This position is called a cable saddle. Anchor points need to be set on both sides of the cable saddle to fix the steel ropes on both sides of the cable saddle to prevent the steel ropes from slipping. The existing steel rope anchoring devices clamp the steel ropes through structures such as anchors and clips. However, during the clamping process of the steel ropes, the steel ropes at the clamping points will be offset due to the offset of the position of the steel ropes and the offset of the fixed position, resulting in the misalignment of the anchor points. The misalignment will cause radial shear stress on the steel ropes, and the radial shear stress will affect the tension and durability of the steel ropes. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a cable anchoring device for reducing the radial shear stress of steel ropes, by means of a rotatable single steel rope fixing structure, so as to reduce the radial shear stress of each steel rope.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] The invention comprises a mounting seat fixed to the side surface of the rope saddle, the mounting seat is provided with an anchor plate, the anchor plate is provided with a rotating groove, a fixing cylinder is rotatably provided in the rotating groove, and the fixing cylinder has a plurality of fixing cylinders, each of which has a rope hole for a single steel rope to pass through; the rotating shaft of the fixing cylinder is parallel to the horizontal plane, and the rotating shaft of the fixing cylinder is perpendicular to the extending direction of the steel rope; the fixing cylinder is provided with a plurality of arc-surface locking plates, the back side of the arc-surface locking plates is fixed with a stop block, the stop block is slidably arranged inside the fixing cylinder, the arc-surface locking plate is located on the side surface of the middle section of the rope hole, the end of the stop block is provided with an arc-surface groove, the outer side of the fixing cylinder is provided with a threaded hole inwardly, the arc-surface groove is located on the side surface of the middle section of the threaded hole, the arc-surface groove is processed with a thread identical to the threaded hole, the threaded hole is threadedly connected with a locking screw, the locking screw is screwed into the threaded hole and is threadedly connected to the arc-surface groove, and the stop block moves toward the rope hole so that the arc-surface locking plate clamps the steel rope.

[0007] Furthermore, the mounting seat includes a flange chassis connected to the side of the saddle, a cylinder shell is fixed on the flange chassis, an adjustment ring is coaxially rotated in the cylinder shell, an adjustment cylinder is threadedly connected to the adjustment ring, the anchor plate is fixed in the adjustment cylinder, a connecting disk is fixed on the side of the adjustment cylinder, a plurality of guide columns are provided at the end of the cylinder shell, and the connecting disk is slidably mounted on the guide columns.

[0008] Furthermore, a through groove leading to the adjusting ring is opened on the side of the cylinder shell, a traction column is fixed on the side of the adjusting ring, a bevel gear is rotatably provided at the end of the traction column, a hexagonal head is fixed at the outer end of the bevel gear, and the edge of the through groove is provided with a conical tooth segment meshing with the bevel gear.

[0009] Furthermore, the adjustment cylinder includes an upper cylinder and a lower cylinder connected to each other, the lower cylinder is threadedly connected to the adjustment ring, the anchor plate is clamped between the upper cylinder and the lower cylinder, the upper cylinder and the lower cylinder are locked by a long screw, a plurality of positioning pins are provided on the upper cylinder and the lower cylinder, and a pin hole cooperating with the positioning pin is opened on the anchor plate.

[0010] Furthermore, the threaded hole is tapered.

[0011] Furthermore, the anchor plate is formed into a plate shape by a plurality of connecting bars arranged in sequence and locked by long screws and nuts. Arc grooves are provided between adjacent connecting bars, and two of the arc grooves are combined to form the rotating groove.

[0012] The beneficial effects of the present invention are:

[0013] The present invention fixes the steel rope by rotating a plurality of fixing cylinders arranged on the anchor plate. After the steel rope passes through the rope hole, the locking screw is tightened. During the tightening process of the locking screw, the stop block is moved toward the rope hole, so that the arc surface locking plate clamps the four sides of the steel rope. The tapered threaded hole can better apply clamping force during the locking process. The locked steel rope is coaxial with the rope hole of the fixing cylinder and is firmly fixed. After the steel rope is tightened, the fixing cylinder is rotated to make the rope hole and the steel rope in the same straight line, thereby avoiding the misalignment of the steel wire and the anchoring point caused by the offset of the steel rope at different positions and the tolerance of the installation position during the anchoring process; avoiding the radial shear stress of the steel rope caused by the misalignment; keeping the steel rope in a straight line, and making the cable anchoring more stable; and each steel rope can be adjusted individually by the rotation of each fixing cylinder, and the steel rope can be replaced individually by loosening the fixed fixing cylinder.

[0014] Other advantages, objectives and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art may be taught from the practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration:

[0016] Figure 1 This is a schematic diagram of the installation of the anchoring device according to an embodiment of the present invention;

[0017] Figure 2 is an overall schematic diagram of an anchoring device according to an embodiment of the present invention;

[0018] Figure 3 is a cross-sectional view of an anchoring device according to an embodiment of the present invention;

[0019] Figure 4 This is a structural exploded view of the regulating cylinder according to an embodiment of the present invention;

[0020] Figure 5 It is a first cross-sectional view of a fixing cylinder according to an embodiment of the present invention;

[0021] Figure 6 A second cross-sectional view of the fixing cylinder according to an embodiment of the present invention;

[0022] The markings in the attached drawings are as follows: 1. Mounting seat; 11. Flange chassis; 12. Cylinder shell; 121. Through groove; 122. Conical tooth segment; 13. Adjusting ring; 131. Traction column; 132. Conical gear; 133. Hexagonal head; 14. Adjusting cylinder; 141. Upper cylinder; 142. Lower cylinder; 143. Positioning pin; 15. Connecting plate; 16. Guide column; 2. Anchor plate; 21. Rotating groove; 22. Connecting strip; 221. Arc groove; 222. Pin hole; 3. Fixed cylinder; 31. Rope hole; 32. Arc surface locking plate; 33. Stop block; 331. Arc surface groove; 34. Locking screw; 4. Rope saddle. DETAILED DESCRIPTION

[0023] like Figures 1 to 6 As shown, the present invention discloses a cable anchoring device for reducing the radial shear stress of the steel rope, such as Figure 1 As shown, it includes a mounting seat 1 fixed on the side of the saddle 4, and the steel rope bundle passes through the two sides of the saddle 4 and is fixed on the two sides of the saddle 4 through an anchoring device, such as Figure 2 , Figure 3 and Figure 4As shown, the mounting seat 1 is provided with an anchor plate 2, and a rotation groove 21 is provided on the anchor plate 2. The anchor plate 2 is formed into a plate shape by a plurality of connecting strips 22 arranged in sequence and locked by long screws and nuts. An arc groove 221 is provided between adjacent connecting strips 22, and two arc grooves 221 are combined to form the rotation groove 21. A fixed cylinder 3 is rotatably provided in the rotation groove 21. There are multiple fixed cylinders 3, and each fixed cylinder 3 is provided with a rope hole 31 for a single steel rope to pass through; the rotation axis of the fixed cylinder 3 is parallel to the horizontal plane, and the rotation axis of the fixed cylinder 3 is perpendicular to the extension direction of the steel rope; as shown Figure 5 and Figure 6 As shown, four arc-surface locking plates 32 are provided in the fixed cylinder 3, and a stopper 33 is fixed on the back side of the arc-surface locking plate 32. The stopper 33 is slidably arranged inside the fixed cylinder 3, and the arc-surface locking plate 32 is located on the side of the middle section of the rope hole 31. An arc-surface groove 331 is provided on the end of the stopper 33. A threaded hole is provided inwardly from the outer side of the fixed cylinder 3, and the threaded hole is conical. The arc-surface groove 331 is located on the side of the middle section of the threaded hole. The arc-surface groove 331 is processed with the same thread as the threaded hole, and a locking screw 34 is threadedly connected to the threaded hole. The locking screw 34 is screwed into the threaded hole and threadedly connected to the arc-surface groove 331. The stopper 33 moves toward the rope hole 31, so that the arc-surface locking plate 32 clamps the steel rope.

[0024] The locking screw 34 is then tightened to allow the stopper 33 to move toward the hole 31 and the locking plate 32 to clamp the four sides of the rope. The conical threaded hole 34 can better apply a clamping force during the locking process. The locked rope is coaxial with the hole 31 of the fixing cylinder 3 and is firmly fixed. After the rope is tightened, the fixing cylinder 3 is rotated to make the hole 31 and the rope be in the same straight line, thereby avoiding the misalignment of the steel wire and the anchoring point caused by the deviation of the steel wire at different positions and the tolerance of the installation position during the anchoring process; avoiding the radial shear stress of the steel wire caused by the misalignment; keeping the steel wire in a straight line, and making the cable anchoring more stable; and each steel wire can be adjusted individually by rotating the fixing cylinders 3, and the steel wire can be replaced by loosening the fixing cylinders 3.

[0025] In a further solution, Figure 1 , Figure 2 and Figure 3 As shown, the mounting base 1 includes a flange chassis 11 connected to the side of the saddle 4, a cylinder shell 12 is fixedly arranged on the flange chassis 11, an adjusting ring 13 is coaxially rotatably arranged in the cylinder shell 12, an adjusting cylinder 14 is threadedly connected to the adjusting ring 13, and the anchor plate 2 is fixed in the adjusting cylinder 14, as shown in FIG. Figure 4As shown, the adjusting cylinder 14 includes an upper cylinder 141 and a lower cylinder 142 that are connected to each other, the lower cylinder 142 is threadedly connected to the adjusting ring 13, the anchor plate 2 is clamped between the upper cylinder 141 and the lower cylinder 142, the upper cylinder 141 and the lower cylinder 142 are locked by long screws, a plurality of positioning pins 143 are provided on the upper cylinder 141 and the lower cylinder 142, and a pin hole 222 that cooperates with the positioning pins 143 is opened on the anchor plate 2; the adjusting cylinder 14 fixes the anchor plate 2 through the structure of the upper cylinder 141 and the lower cylinder 142 to further reinforce the anchor plate 2, a connecting plate 15 is fixed to the side of the adjusting cylinder 14, a plurality of guide columns 16 are provided at the end of the cylinder shell 12, and the connecting plate 15 is slidably arranged on the guide columns 16.

[0026] In this structure, by rotating the adjusting ring 13, the adjusting ring 13 is threadedly connected to the cylinder shell 12, and the rotation of the cylinder shell 12 is limited by the guide column 16, so that the cylinder shell 12 moves in the radial direction, and the cylinder shell 12 drives the anchor plate 2 to move in the radial direction of the steel rope, so that the tension of the steel rope can be adjusted as a whole. This structure can also avoid the movement of the anchor plate 2 due to the radial traction force, and can only transmit in one direction, which is suitable for adjusting the tension of the steel rope.

[0027] In a further solution, Figure 3 As shown, a through slot 121 leading to the adjusting ring 13 is opened on the side of the cylindrical shell 12, a traction column 131 is fixed on the side of the adjusting ring 13, a bevel gear 132 is rotatably provided at the end of the traction column 131, a hexagonal head 133 is fixed at the outer end of the bevel gear 132, and a bevel tooth segment 122 meshing with the bevel gear 132 is provided on the edge of the through slot 121.

[0028] By adding a traction column 131, a bevel gear 132 and a hexagonal head 133, a force application point for the rotating ring is provided; the hexagonal head 133 can be adapted to various force application tools, and the hexagonal head 133 is rotated to drive the bevel gear 132 to move along the conical tooth segment 122, and the traction column 131 moves along the conical tooth segment 122 to pull the rotating ring to rotate. This structural variation applies force to the rotating ring, which facilitates the adjustment of the entire anchor plate 2.

[0029] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A cable anchoring device for reducing radial shear stress of a steel cable, characterized in that: The invention comprises a mounting seat (1) fixed to the side of a cable saddle (4), wherein the mounting seat (1) is provided with an anchor plate (2), wherein the anchor plate (2) is provided with a rotation groove (21), wherein a fixing cylinder (3) is rotatably provided in the rotation groove (21), wherein there are a plurality of fixing cylinders (3), and each fixing cylinder (3) is provided with a rope hole (31) for a single steel rope to pass through; wherein the rotation axis of the fixing cylinder (3) is parallel to a horizontal plane, and the rotation axis of the fixing cylinder (3) is perpendicular to an extending direction of the steel rope; wherein a plurality of arc surface locking plates (32) are provided in the fixing cylinder (3), wherein a stop block (33) is fixed on the back side of the arc surface locking plate (32), wherein the stop block (33) is slidably provided in the fixing cylinder (3), wherein the arc surface locking plate (32) is located on the side of the middle section of the rope hole (31), wherein an arc surface groove (331) is provided at the end of the stop block (33), wherein a threaded hole is provided inwardly on the outer side of the fixing cylinder (3), and wherein the arc surface groove (331) is located in the fixing cylinder (3) and wherein the threaded hole is provided inwardly on the outer side of the fixing cylinder (3), and wherein the threaded hole is provided inwardly on the outer side of the fixing cylinder (3), and wherein the threaded hole is provided inwardly on the outer side of the fixing cylinder (3). On the side of the middle section of the threaded hole, the arc surface groove (331) is processed with a thread identical to that of the threaded hole, a locking screw (34) is threadedly connected to the threaded hole, the locking screw (34) is screwed into the threaded hole and threadedly connected to the arc surface groove (331), the stop block (33) moves toward the rope hole (31), so that the arc surface locking plate (32) clamps the steel rope; the mounting seat (1) comprises a flange chassis (11) connected to the side of the saddle (4), a cylinder shell (12) is fixedly provided on the flange chassis (11), an adjustment ring (13) is coaxially rotatably provided in the cylinder shell (12), an adjustment cylinder (14) is threadedly connected to the adjustment ring (13), the anchor plate (2) is fixed in the adjustment cylinder (14), a connecting plate (15) is fixed on the side of the adjustment cylinder (14), a plurality of guide columns (16) are provided at the end of the cylinder shell (12), and the connecting plate (15) is slidably arranged on the guide columns (16).

2. The cable anchoring device for reducing radial shear stress of a steel cable according to claim 1, characterized in that: A through slot (121) leading to the adjusting ring (13) is formed on the side of the cylindrical shell (12). A traction column (131) is fixed on the side of the adjusting ring (13). A bevel gear (132) is rotatably provided at the end of the traction column (131). A hexagonal head (133) is fixed at the outer end of the bevel gear (132). A bevel tooth segment (122) meshing with the bevel gear (132) is provided on the edge of the through slot (121).

3. The cable anchoring device for reducing radial shear stress of a steel cable according to claim 2, characterized in that: The adjusting cylinder (14) comprises an upper cylinder (141) and a lower cylinder (142) which are connected to each other; the lower cylinder (142) is threadedly connected to the adjusting ring (13); the anchor plate (2) is clamped between the upper cylinder (141) and the lower cylinder (142); the upper cylinder (141) and the lower cylinder (142) are locked by means of a long screw; a plurality of positioning pins (143) are provided on the upper cylinder (141) and the lower cylinder (142); and a pin hole (222) which cooperates with the positioning pin (143) is provided on the anchor plate (2).

4. The cable anchoring device for reducing radial shear stress of a steel cable according to claim 1, characterized in that: The threaded hole is tapered.

5. The cable anchoring device for reducing radial shear stress of a steel cable according to claim 1, characterized in that: The anchor plate (2) is formed into a plate shape by a plurality of connecting bars (22) arranged in sequence and locked by means of long screws and nuts. An arc groove (221) is provided between adjacent connecting bars (22), and two arc grooves (221) are combined to form the rotation groove (21).

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