A lateral cable saddle with self-adjustable pulley angle

Abstract

This invention relates to a self-adjustable pulley angle lateral saddle, comprising a crossbeam, a saddle, swing grooves, rollers, and pulleys. A pair of saddles are symmetrically slidably mounted on the top two sides of the crossbeam. Several swing grooves are rotatably connected between the opposite surfaces of the pair of saddles. Several pulleys are mounted on the top of the swing grooves via corresponding rollers. Several sets of adjustment components are provided between the crossbeam and the saddle, and the swing grooves are driven to rotate through the corresponding adjustment components to achieve angle adjustment. The wire rope used for cable hoisting passes over the pulleys on the saddle. This invention allows the pulley angle to change accordingly when the saddle moves laterally. Regardless of whether the saddle moves left or right, the pulley changes its corresponding angle, ensuring that the resultant force of the wire rope still passes through the center of the pulley, thus preventing the wire rope from slipping off the pulley and ensuring construction safety. Furthermore, the pulley angle control of this invention automatically changes with the lateral movement distance, requiring no manual operation.

Description

Technical Field

[0001] This invention relates to the field of bridge engineering construction technology, and in particular to a transverse cable saddle with an adjustable pulley angle. Background Technology

[0002] In recent years, the number of bridge projects in my country has been increasing, especially the number of long-span bridges. These long-span bridges are difficult to construct and often require heavy and tall lifting equipment, such as cable-stayed systems and catenary walkways. For the hoisting of basket arch or swallow arch-type arch bridges, the cable saddle at the top of the cable-stayed tower needs to move laterally during the hoisting process to change the lateral position of the wire rope, thereby enabling the hoisting of the arch rib segments of the spatial arch bridge. However, since the anchor position of the fixed wire rope remains unchanged, the lateral movement of the cable saddle will cause a certain angle between the wire rope and the cable saddle pulley, generating a lateral force. When the lateral movement distance is too large, it can lead to the wire rope coming off the pulley, a very dangerous situation. Therefore, it is necessary to propose effective measures to solve the problem of wire rope coming off during the lateral movement of the cable saddle. Summary of the Invention

[0003] The present invention aims to overcome the shortcomings of the prior art and provide a lateral saddle with an adjustable pulley angle.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a transverse saddle with adjustable pulley angle, comprising a crossbeam, a saddle, a swing groove, rollers, and pulleys. A pair of saddles are symmetrically slidably installed on the top two sides of the crossbeam. Several swing grooves are rotatably connected between the opposite surfaces of the pair of saddles. Several pulleys are installed on the top of the swing grooves via corresponding rollers. Several sets of adjustment components are provided between the crossbeam and the saddle, and the swing grooves are driven to rotate by the corresponding adjustment components to achieve angle adjustment. The steel wire rope used for cable hoisting passes over the pulleys on the saddle.

[0005] Specifically, the top two sides of the crossbeam are equipped with rails, the bottom of the crossbeam is equipped with a groove corresponding to the rails, and the cable saddle is slidably mounted on the rails through the grooves. Both ends of the crossbeam are equipped with winches, and the cable saddle can move laterally left and right through the traction force of the winches.

[0006] In particular, the swing groove has a hollow semi-cylindrical structure, and a rotating shaft is rotatably connected to the two vertical surfaces of the swing groove, and the rotating shaft is fixed to the cable saddle.

[0007] Specifically, several rollers are fixedly connected side by side to the top of the inner wall of the swing groove, and pulleys are rotatably connected to the rollers.

[0008] Specifically, the adjustment assembly includes a first drive shaft and a second drive shaft rotatably connected between the opposing surfaces of a pair of cable saddles, and a rack arranged along the top of the crossbeam. The first drive shaft is provided with a first gear and a second gear, and the second drive shaft is provided with a third gear. The first gear meshes with the rack, and the second gear meshes with the third gear. The arc-shaped outer wall of the swing groove is provided with several key teeth that mesh with the third gear.

[0009] The beneficial effects of this invention are as follows: By setting up a swing groove and adjusting components, the pulley angle changes accordingly when the cable saddle moves laterally. Regardless of whether the cable saddle moves to the left or right, the pulley changes the corresponding angle, so that the resultant force of the wire rope still passes through the center of the pulley, thereby preventing the wire rope from coming off the pulley and ensuring construction safety. Moreover, the pulley angle control of this invention changes automatically with the lateral movement distance, without the need for manual operation. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of the present invention;

[0011] Figure 2 This is a schematic diagram of the meshing of the rack and the first gear of the present invention;

[0012] Figure 3 This is a schematic diagram of the meshing of the second and third gears and the meshing of the third gear with the key on the swing groove in this invention.

[0013] In the diagram: 1-Saddle; 2-Shaft; 3-Swing groove; 4-Roller; 5-Pulley; 6-Second drive shaft; 7-First drive shaft; 8-First gear; 9-Second gear; 10-Third gear; 11-Rail; 12-Rack; 13-Crossbeam;

[0014] The following will describe in detail, with reference to the accompanying drawings, embodiments of the present invention. Detailed Implementation

[0015] The present invention will be further described below with reference to embodiments:

[0016] like Figures 1-3 As shown, a lateral saddle with adjustable pulley angle includes a crossbeam 13, a saddle 1, a swing groove 3, a roller 4, and a pulley 5. A pair of saddles 1 are symmetrically slidably installed on the top two sides of the crossbeam 13. The top two sides of the crossbeam 13 are provided with rails 11. The bottom of the crossbeam 13 is provided with a sliding groove corresponding to the rails 11, and the saddle 1 is slidably installed on the rails 11 through the sliding groove. Both ends of the crossbeam 13 are provided with winches, and the saddle 1 can move laterally left and right by the traction force of the winches.

[0017] Specifically, the cable saddle 1 is a steel plate structure with a thickness of 4cm. It is installed on the crossbeam 13 at the top of the tower. Due to the setting of the slide and the track 11, the cable saddle 1 can move laterally left and right on the track 11 by the traction force of the winches on both sides.

[0018] Several swing grooves 3 are rotatably connected between the opposite faces of a pair of cable saddles 1. The swing grooves 3 are hollow semi-cylindrical structures. Rotating shafts 2 are rotatably connected to the two vertical surfaces of the swing grooves 3, and the rotating shafts 2 are fixed to the cable saddles 1. Several pulleys 5 are installed on the top of the swing grooves 3 through corresponding rollers 4. Several rollers 4 are fixed in parallel to the top of the inner wall of the swing grooves 3, and the pulleys 5 are rotatably connected to the rollers 4.

[0019] Specifically, three swing grooves 3 can be set. The swing groove 3 is a semi-cylindrical steel structure (specifically, it can be a rolled steel plate) with a thickness of 4cm. The rotating shaft 2 is a pin with a diameter of 8cm (specifically, it can be a steel bar). The pin is welded to the side wall of the cable saddle 1 and can rotate between the pin and the swing groove 3. Three pulleys 5 can be set on each swing groove 3. The diameter of the pulley 5 is 20cm. The diameter of the roller 4 (specifically, it can be a steel bar) is 5cm. The pulley 5 and the roller 4 can rotate between each other. The roller 4 is welded to the inner wall of the swing groove 3.

[0020] Furthermore, a support rod can be installed between the swing groove 3 and the roller 4.

[0021] Several sets of adjustment components are provided between the crossbeam 13 and the cable saddle 1, and the swing groove 3 is driven to rotate by the corresponding adjustment components to achieve angle adjustment. The steel wire rope used for cable hoisting passes over the pulley 5 on the cable saddle 1. The adjustment components include a first drive shaft 7 and a second drive shaft 6 rotatably connected between the opposite surfaces of a pair of cable saddles 1, and a rack 12 arranged along the top of the crossbeam 13. The first drive shaft 7 is provided with a first gear 8 and a second gear 9, and the second drive shaft 6 is provided with a third gear 10. The first gear 8 meshes with the rack 12, and the second gear 9 meshes with the third gear 10. The arc-shaped outer wall of the swing groove 3 is provided with several teeth that mesh with the third gear 10.

[0022] Specifically, the rack 12 is a key welded to the top of the crossbeam 13. The key is 3cm high and 3cm wide, and is distributed along the length of the crossbeam 13. The key connected to the rack 12 is the key of the first gear 8. The key on the first gear 8 is 3cm high and 3cm wide, and the diameter of the first gear 8 is 50cm. The first gear 8 is fixed on the first drive shaft 7, and the two cannot rotate. The first drive shaft 7 is mounted on the side wall of the cable saddle 1 and can rotate.

[0023] The second gear 9 has a diameter of 10cm and is fixed to the other side of the first drive shaft 7. The second gear 9 has a diameter of 10cm and has a trapezoidal tooth key with a width of 3cm.

[0024] The key of the third gear 10 is connected to the key of the second gear 9. The third gear 10 is fixed on the second drive shaft 6, which is mounted on the side wall of the cable saddle 1 and can rotate. The key of the third gear 10 is the same size as that of the second gear 9, and there are 18 of them. The diameter of the third gear 10 is 20cm.

[0025] The key of the swing groove 3 is connected to the key of the third gear 10. The key of the swing groove 3 has the same size and spacing as the second gear 9 and is arranged on the outer arc of the swing groove 3.

[0026] Furthermore, if the spacing between the swing grooves 3 is large, the radii of their corresponding first gear 8 and second gear 9 can be set respectively, so that the three swing grooves 3 have different change angles.

[0027] The working steps of this invention are as follows:

[0028] 1) The winch provides external tension to the saddle 1, causing the saddle 1 to move laterally on the track 11 of the crossbeam 13.

[0029] 2) During the movement, the first gear 8 and the rack 12 on the crossbeam 13 are relatively displaced, causing the first gear 8 to rotate.

[0030] 3) The first gear 8 drives the second gear 9 to rotate via the first drive shaft 7.

[0031] 4) The second gear 9 drives the third gear 10 to rotate.

[0032] 5) The third gear 10 drives the swing groove 3 to swing, thereby realizing the swing of the pulley 5.

[0033] 6) By adjusting the ratio of the rotation radii of the first gear 8 and the second gear 9, the swing speed of the pulley 5 is changed, so that the resultant force of the lateral steel wire rope remains through the center of the pulley 5, thus preventing it from coming off the pulley 5.

[0034] This invention enables the pulley 5 angle to change as the saddle 1 moves laterally. Regardless of whether the saddle 1 moves to the left or right, the pulley 5 changes the corresponding angle, ensuring that the resultant force of the wire rope still passes through the center of the pulley 5, thus preventing the wire rope from slipping off the pulley and ensuring construction safety. Furthermore, the pulley 5 angle control of this invention automatically changes with the lateral movement distance, requiring no manual operation.

[0035] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0038] The present invention has been described above by way of example. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made by adopting the inventive concept and technical solution of the present invention, or direct application to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A lateral saddle with self-adjustable pulley angle, characterized in that, Includes a crossbeam (13), a cable saddle (1), a swing groove (3), a roller (4), and a pulley (5). A pair of cable saddles (1) are symmetrically slidably installed on the top two sides of the crossbeam (13). Several swing grooves (3) are rotatably connected between the opposite faces of the pair of cable saddles (1). Several pulleys (5) are installed on the top of the swing grooves (3) through corresponding rollers (4). Several sets of adjustment components are provided between the crossbeam (13) and the cable saddle (1). The swing grooves (3) are driven to rotate through the corresponding adjustment components to achieve angle adjustment. The steel wire rope used for cable hoisting crosses the pulleys (5) on the cable saddle (1). The swing groove (3) has a hollow semi-cylindrical structure; the adjustment assembly includes a first drive shaft (7) and a second drive shaft (6) rotatably connected between the opposite surfaces of a pair of cable saddles (1), and a rack (12) that runs along the top of the crossbeam (13). The first drive shaft (7) is provided with a first gear (8) and a second gear (9), and the second drive shaft (6) is provided with a third gear (10). The first gear (8) meshes with the rack (12), and the second gear (9) meshes with the third gear (10). The arc-shaped outer wall of the swing groove (3) is provided with several key teeth that mesh with the third gear (10). When the saddle (1) moves laterally on the track (11) of the crossbeam (13), the first gear (8) and the rack (12) on the crossbeam (13) are relatively displaced, causing the first gear (8) to rotate. The first gear (8) drives the second gear (9) to rotate through the first drive shaft (7). The second gear (9) drives the third gear (10) to rotate. The third gear (10) drives the swing groove (3) to swing, thereby realizing the swing of the pulley (5).

2. A lateral cable saddle with self-adjustable pulley angle according to claim 1, characterized in that, The top two sides of the crossbeam (13) are provided with rails (11), the bottom of the crossbeam (13) is provided with a groove corresponding to the rail (11), and the cable saddle (1) is slidably placed on the rail (11) through the groove. Both ends of the crossbeam (13) are provided with winches, and the cable saddle (1) is moved laterally left and right by the traction force of the winch.

3. A lateral saddle with self-adjustable pulley angle according to claim 2, characterized in that, A rotating shaft (2) is rotatably connected to the two vertical surfaces of the swing groove (3), and the rotating shaft (2) is fixed to the cable saddle (1).

4. A lateral saddle with self-adjustable pulley angle according to claim 3, characterized in that, Several rollers (4) are fixedly connected side by side to the top of the inner wall of the swing groove (3), and the pulley (5) is rotatably connected to the rollers (4).

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