A cable bender

Abstract

The application belongs to the field of cable bending and relates to a cable bending device, which comprises a base, two supporting legs, a transmission mechanism and a clamping mechanism, the base is in an I-shaped structure, the space at the two ends of the base is an active area, and the inner end of the supporting leg is movably installed in the active area of the base. The application realizes labor-saving operation through a rocker, a threaded screw rod and a worm gear triple labor-saving device, so that a maintenance worker can bend a cable by relying on manpower, and pure mechanical driving does not need to worry about circuit damage caused by rusting, and the transmission mechanism and the clamping mechanism are used to control the first clamping plate and the second clamping plate, so that the cable can be accurately adjusted and the working efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the field of cable bending and relates to a cable bending device suitable for humid environments. Background Technology

[0002] During operation, the main power cable experiences axial thermal stress due to temperature changes, causing cable creep. Over time, this can lead to damage to the cable and its support structure, or the cable falling off. To prevent this, cable engineers employ a serpentine (S-shaped) laying method to counteract the stress. This requires the use of tools and equipment to bend the cable within the tunnel.

[0003] Currently, cable bending is mainly done using cable benders, which are usually driven by electric actuators. Since the working environment of cable wells is relatively dark and humid, the electric components of the cable benders may corrode and be damaged if exposed to moisture for a long time, which will greatly reduce the service life of the cable benders, make equipment maintenance difficult, and increase costs.

[0004] Chinese patent CN110340248A discloses a cable bending device, comprising: a telescopic component, at least one end of which is provided with a first arc-shaped plate; and an auxiliary support component, which is adapted to the telescopic component and provides a fulcrum for the telescopic component. Because the first arc-shaped plate of this device is rotatably connected to the telescopic component via an ear plate, the degree of bending of the cable at each point is relatively random, resulting in non-standard cables and reduced work efficiency. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a cable bender that can achieve accurate adjustment without using electric components.

[0006] The technical solution adopted by this invention to solve the technical problem is:

[0007] A cable bending tool includes: a base, two support legs, a transmission mechanism, and a clamping mechanism. The base has an I-shaped structure, and the spaces at both ends of the base are movable areas; the inner ends of the support legs are movably installed within the movable areas of the base.

[0008] The transmission mechanism includes: two connecting rods, two collars, a threaded screw, a worm gear, a worm, and a rotating rod. One end of each connecting rod is vertically fixed to the side of the support leg; the collar is connected to the other end of the connecting rod; the threaded screw has a threadless shaft in the middle, with the threads on both sides rotating in opposite directions, and the two collars are installed on both sides of the threaded screw; the worm gear is installed on the shaft in the middle of the threaded screw; the worm is vertically installed above the threaded screw, and the helical teeth of the worm mesh with the teeth of the worm gear; the rotating rod is integrally connected to the worm.

[0009] The clamping mechanism includes: two connecting columns, two first clamping plates, a sliding rod, a connecting plate, and a second clamping plate. The top of the connecting column is connected to the outer end of the support leg; the first clamping plate is an arc-shaped plate, connected to the bottom of the connecting column, and facing away from the connecting rod; the sliding rod is fixed on the base, located on the side of the support leg away from the connecting rod; the connecting plate is slidably mounted on the sliding rod; the second clamping plate is an arc-shaped plate, connected to the bottom of the connecting plate, and the second clamping plate faces opposite to the first clamping plate.

[0010] Furthermore, it also includes a clamping mechanism, which comprises: four fixed plates, two mounting shafts, four buckle plates, and sliders mounted on the connecting plate and the sliding rod. The fixed plates are parallel to the rotating rod and are mounted on the top and bottom sides of the base, extending from the base. Each mounting shaft is mounted at the extension of the fixed plate on the same side, and buckle plates are rotatably connected to both ends of the mounting shaft. The buckle plates are made of magnetic material, and the sliders are made of magnetic material.

[0011] Furthermore, the clamping mechanism also includes two locking blocks, which are triangular blocks installed at the end of the buckle plate away from the base.

[0012] Furthermore, it also includes a rotating mechanism, which includes: a connecting ring, a first bevel gear, a second bevel gear, a connecting shaft, and a rocker arm. The connecting ring is mounted on the top of the slider. The first bevel gear is rotatably connected to the connecting ring, and both the connecting ring and the first bevel gear are sleeved on the rotating rod. The second bevel gear is mounted on the bottom of the vertical connecting shaft and meshes with the top of the first bevel gear. The rocker arm is horizontally fixed on the top of the connecting shaft.

[0013] Furthermore, the rotating mechanism also includes a support cover, which is an inverted U-shaped structure and is installed on the top of the slider. The connecting ring, the first bevel gear, and the second bevel gear are located inside the support cover. The connecting shaft passes through the top of the support cover and extends to the outside. The rocker arm is located outside the support cover.

[0014] Furthermore, it also includes two fixing blocks, which are located at the bottom of the connecting column and connected to the first clamping plate.

[0015] Furthermore, it also includes a housing, within which both the worm gear and the worm are mounted.

[0016] The advantages and positive effects of this invention are:

[0017] 1. This invention achieves labor-saving operation through a triple labor-saving device consisting of a rocker arm, a threaded screw, and a worm gear, enabling maintenance workers to bend cables manually. The purely mechanical drive eliminates concerns about circuit damage caused by rust.

[0018] 2. This invention controls the first and second clamping plates through a transmission mechanism and a clamping mechanism, which can accurately adjust the cable and improve work efficiency.

[0019] 3. This invention can reverse the opening and closing mechanism, thereby straightening a bent cable. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the supporting leg of the present invention when it is closed inward;

[0022] Figure 3 This is a schematic diagram of the structure of the support leg of the present invention when it is straightened;

[0023] Figure 4 This is a schematic diagram of the structure of the supporting leg of the present invention when it is spread outward;

[0024] Figure 5 This is a schematic diagram of the structure of the worm gear and worm shaft in this invention;

[0025] Figure 6 This is a schematic diagram of the rotating mechanism of the present invention;

[0026] Figure 7 This is a schematic diagram of the clamping mechanism of the present invention.

[0027] The above figures include the following reference numerals:

[0028] 1. Base; 2. Support leg; 3. Connecting column; 4. Fixing block; 5. First clamping plate; 6. Sliding rod; 7. Sliding block; 8. Connecting plate; 9. Second clamping plate; 10. Connecting rod; 11. Collar; 12. Threaded screw; 13. Rotating shaft; 14. Worm gear; 15. Worm; 16. Housing; 17. Rotating rod; 18. Connecting ring; 19. First bevel gear; 20. Second bevel gear; 21. Connecting shaft; 22. Rocker arm; 23. Support cover; 24. Fixing plate; 25. Buckle plate; 26. Locking block; 27. Mounting shaft. Detailed Implementation

[0029] The present invention will be further described in detail below through specific embodiments. The following embodiments are merely descriptive and not limiting, and should not be used to limit the scope of protection of the present invention.

[0030] In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., 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 the invention and for 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 the invention. 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 indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] like Figure 1 , Figure 2 As shown, the present invention provides a cable bending device, including a base 1, with support legs 2 rotatably connected to both ends of the base 1, and a first clamping plate 5 provided at the bottom of the outer end of each of the two support legs 2. A sliding rod 6 is installed on one side of the base 1, and a slider 7 is movably sleeved on the sliding rod 6. A second clamping plate 9 is provided at the bottom of the slider 7. The first clamping plate 5 and the second clamping plate 9 face opposite directions. A collar 11 is provided on the side of each of the two support legs away from the second clamping plate 9, and a threaded screw 12 is threadedly connected to each collar 11 on both sides.

[0032] like Figure 1 As shown, a connecting plate 8 is installed at one end of the slider 7, and the connecting plate 8 is movably sleeved on the slider 6. One side of the second clamping plate 9 is installed on the connecting plate 8, and both the second clamping plate 9 and the first clamping plate 5 are arc-shaped plates. The first clamping plates 5 on both sides, together with the second clamping plate 9, realize the bending operation of the cable.

[0033] like Figure 2 As shown, the bottom of each of the two support legs 2, which are far apart from each other, is rotatably connected to a connecting column 3, and a fixing block 4 is installed at the bottom of the connecting column 3. One side of the first clamping plate 5 is installed on the fixing block 4. The support leg 2 drives the connecting column 3 to move, and the connecting column 3 drives the first clamping plate 5 to move through the fixing block 4.

[0034] like Figure 2 , Figure 3 , Figure 4As shown, a connecting rod 10 is installed on the side of the two support legs 2 near the collar 11, and the direction of the connecting rod 10 is perpendicular to the support leg 2. The length of the connecting rod 10 is adapted to the vertical distance between one end of the base 1 and the connecting rod 10. One side of the collar 11 is rotatably connected to one end of the connecting rod 10. Since the two sides of the threaded screw 12 have opposite directions of rotation, the collars 11 on both sides move in opposite directions. The movement of the collar 11 drives the support leg 2 to rotate around the base 1 through the connecting rod 10. The threaded screw 12 can achieve a force-saving transmission.

[0035] like Figure 5 As shown, the screw threads 12 have opposite directions of rotation on both sides, and a worm wheel 14 and a worm 15 are arranged between the screw threads 12. The middle of the screw threads 12 is a threadless rotating shaft 13, and the worm wheel 14 is fixedly sleeved on the rotating shaft 13. A housing 16 is provided on the outside of the worm wheel 14, and the rotating shaft 13 movably passes through both sides of the housing 16. The bottom of the worm 15 meshes with the top of the worm wheel 14, and the worm 15 is located inside the housing 16. The end of the worm 15 away from the base 1 is rotatably connected to the inner wall of the housing 16, and the other end of the worm 15 movably passes through the housing 16 and extends to the outside. The rotating rod 17 drives the worm 15 to rotate, and the worm 15 drives the worm wheel 14 to rotate through meshing. The worm wheel 14 drives the screw threads 12 at both ends to rotate through the rotating shaft 13. Through the cooperation of the worm wheel 14 and the worm 15, a force-saving transmission can be achieved.

[0036] like Figure 5 As shown, a rotating rod 17 is mounted on one end of the worm gear 15 located outside the housing 16, and the vertical cross-section of the rotating rod 17 is cross-shaped. One end of the rotating rod 17 extends to the end of the slide rod 6 away from the base 1, as shown. Figure 6 As shown, a connecting ring 18 is installed on the top of the slider 7, and a rotating rod 17 passes through the connecting ring 18. A first bevel gear 19 is sleeved on the upper part of the rotating rod 17, and the installation position and shape of the first bevel gear 19 are adapted to the vertical cross-sectional shape of the rotating rod 17. The first bevel gear 19 is rotatably connected to the connecting ring 18. A second bevel gear 20 is meshed with the top of the first bevel gear 19, and a connecting shaft 21 is installed on the top of the second bevel gear 20. A support cover 23 is installed on the top of the slider 7 at the position of the second bevel gear 20, and the cross-sectional shape of the support cover 23 is inverted U-shaped. The top of the connecting shaft 21 moves through the top of the support cover 23 and extends to the outside. A rocker arm 22 is installed on one side of the top of the connecting shaft 21. When the rocker arm 22 is rotated, the rocker arm 22 and the connecting shaft 21 rotate, and the connecting shaft 21 drives the second bevel gear 20 to rotate. The second bevel gear 20 drives the first bevel gear 19 to rotate through meshing. The first bevel gear 19 drives the rotating rod 17 to rotate through its cooperation with the rotating rod 17.

[0037] like Figure 7As shown, fixing plates 24 are installed on the left and right sides of the top and bottom of the base 1, and the fixing plate 24 protrudes from the base 1 by a certain distance at the end near the slide rod 6. A mounting shaft 27 is installed between the two fixing plates 24 on the same side. Each mounting shaft 27 is rotatably connected to the upper and lower ends of the upper and lower ends with a buckle plate 25. The length of the buckle plate 25 is adapted to the length of the slider 7. The buckle plate 25 is made of magnetic material, and the slider 7 is made of magnetic material. A locking block 26 is installed at the end of the buckle plate 25 away from the base 1. The cross-section of the locking block 26 is a right-angled triangle. The two sides of the locking block 26 face opposite directions. The buckle plate 25 and the slider 7 attract each other under the action of magnetic force. At the same time, the locking block 26 locks the slider 7 to prevent it from falling off.

[0038] During operation, adjust the angles of the two support legs 2 according to the straightness or bending of the cable, so that the cable can be placed precisely between the first clamping plate 5 and the second clamping plate 9. Slide the slider 7 to make it flush with the base 1. At this time, the buckle plate 25 and the slider 7 attract each other under the action of magnetic force, and the locking block 26 locks the slider 7 to prevent it from falling off. Turn the rocker arm 22, and the connecting shaft 21 of the rocker arm 22 will rotate. The connecting shaft 21 will drive the second bevel gear 20 to rotate. The second bevel gear 20 will drive the first bevel gear 19 to rotate through meshing. The first bevel gear 19 will drive the rotating rod 17 through cooperation. Rotating rod 17 drives worm gear 15 to rotate. Worm gear 15 drives worm wheel 14 to rotate through meshing. Worm wheel 14 drives threaded screws 12 at both ends to rotate through shaft 13. Since the screws 12 rotate in opposite directions on both sides, the collars 11 on both sides move in opposite directions. The movement of collars 11 drives support leg 2 to rotate around base 1 through connecting rod 10. Support leg 2 drives connecting column 3 to move. Connecting column 3 drives first clamping plate 5 to move through fixing block 4. The first clamping plate 5 on both sides, together with the second clamping plate 9, realizes the bending operation of the cable.

[0039] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the inventive concept, and these all fall within the protection scope of the present invention.

Claims

1. A cable bender, characterized in that, include: The base (1) is an I-shaped structure, and the space at both ends of the base (1) is an active area; Two supporting legs (2), the inner ends of which are movably installed in the movable area of ​​the base (1); The transmission mechanism includes: Two connecting rods (10), one end of which is vertically fixed to the side of the support leg (2); Two rings (11) are connected to the other end of the connecting rod (10); A threaded screw (12) has a threadless shaft (13) in the middle, and the threads on both sides are in opposite directions. The two rings (11) are installed on both sides of the threaded screw (12). Worm gear (14), the worm gear (14) is mounted on the rotating shaft (13) in the middle of the threaded screw (12); A worm (15) is vertically mounted above the threaded screw (12), and the helical teeth of the worm (15) mesh with the teeth of the worm wheel (14). Rotating rod (17), the rotating rod (17) is integrally connected to the worm gear (15); and a clamping mechanism, the clamping mechanism comprising: Two connecting columns (3), the top of which is connected to the outer end of the supporting leg (2); Two first clamping plates (5); the first clamping plate (5) is an arc-shaped plate, and the first clamping plate (5) is connected to the bottom of the connecting column (3) and faces away from the connecting rod (10). A slide bar (6) is fixed on the base (1) and located on the side of the support leg (2) away from the connecting rod (10); A connecting plate (8) is slidably mounted on the slide rod (6); A second clamping plate (9) is an arc-shaped plate. The second clamping plate (9) is connected to the bottom of the connecting plate (8). The second clamping plate (9) is opposite to the orientation of the first clamping plate (5). It also includes a clamping mechanism, which includes: four fixed plates (24), two mounting shafts (27), four buckle plates (25), and sliders (7) mounted on the connecting plate (8) and the slide rod (6). The fixed plates (24) are parallel to the rotating rod (17), mounted on the top and bottom sides of the base (1), and extend from the base (1). Each mounting shaft (27) is mounted on the extension of the fixed plate (24) on the same side. The upper and lower ends of the mounting shaft (27) are rotatably connected to buckle plates (25). The buckle plates (25) are made of magnetic material, and the sliders (7) are made of magnetic material. The clamping mechanism also includes two locking blocks (26), which are triangular blocks and are installed on the end of the buckle plate (25) away from the base (1); It also includes a rotating mechanism, which includes: a connecting ring (18), a first bevel gear (19), a second bevel gear (20), a connecting shaft (21), and a rocker arm (22). The connecting ring (18) is mounted on the top of the slider (7). The first bevel gear (19) is rotatably connected to the connecting ring (18). The connecting ring (18) and the first bevel gear (19) are both sleeved on the rotating rod (17). The second bevel gear (20) is mounted on the bottom of the vertical connecting shaft (21) and meshes with the top of the first bevel gear (19). The rocker arm (22) is horizontally fixed on the top of the connecting shaft (21). The rotating mechanism also includes a support cover (23), which is an inverted U-shaped structure and is installed on the top of the slider (7). The connecting ring (18), the first bevel gear (19), and the second bevel gear (20) are located inside the support cover (23). The connecting shaft (21) passes through the top of the support cover (23) and extends to the outside. The rocker arm (22) is located outside the support cover (23). It also includes two fixing blocks (4), which are located at the bottom of the connecting column (3) and connected to the first clamping plate (5); It also includes a housing (16), in which the worm gear (14) and the worm (15) are both installed; During operation, adjust the angle of the two support legs according to the straightness or bending of the cable, so that the cable can be placed precisely between the first and second clamping plates. Slide the slider until it is flush with the base. At this time, the buckle and the slider attract each other under the action of magnetic force, and the locking block locks the slider to prevent it from falling off. Turn the rocker arm, the rocker arm connecting shaft rotates, the connecting shaft drives the second bevel gear to rotate, the second bevel gear drives the first bevel gear to rotate through meshing, the first bevel gear drives the rotating rod to rotate through cooperation with the rotating rod, the rotating rod drives the worm gear to rotate, the worm gear drives the worm wheel to rotate through meshing, the worm wheel drives the threaded screws at both ends to rotate through the rotating shaft. Since the screws on both sides have opposite directions of rotation, the collars on both sides move in opposite directions. The movement of the collars drives the support legs to rotate around the base through the connecting rod, the support legs drive the connecting column to move, the connecting column drives the first clamping plate to move through the fixing block, and the first clamping plates on both sides achieve the bending operation of the cable under the combined action of the first clamping plates and the second clamping plates.

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