CN103832895B - One determines tension cables automatic delivering mechanism - Google Patents

Abstract

An automatic cable delivery mechanism with constant tension relates to an automatic cable delivery mechanism. The fixed pulley part 1 and the movable pulley part are arranged under the fixed frame front and back, the upper end of the pulley mounting frame on the fixed pulley part is fixedly connected with the fixed frame, and the upper end of the pulley mounting frame on the moving pulley part is fixedly connected with the linear slider, and the linear slider Slidingly connected with the linear slide rail, the linear slide rail is fixedly connected with the fixed frame, one end of the constant force spring is fixed on the fixed frame, the other end is fixed on the pulley installation frame on the moving pulley part, and the cable is wound on the roller on the fixed pulley part and the rollers on the moving pulley parts, and the output end of the cable is set on the four support wheel sets, the four support wheel sets are set in parallel, the horizontal plate is horizontally set above the support wheel set, the passive conveying long wheel and the active conveying wheel The cable is clamped, and the input end of the driving conveying wheel is connected with the servo motor through the planetary reducer. The invention is used in various large electric equipments.

Description

A constant tension cable automatic conveying mechanism

technical field

The invention relates to an automatic cable delivery mechanism, in particular to an automatic cable delivery mechanism with constant tension.

Background technique

Cable conveying mechanisms are widely used in various large electrical equipment. For example, in nuclear power plants, thick multi-core cables are required for reactor maintenance equipment. The quality of the signal often determines the working efficiency of the equipment. The original cable storage system usually uses a drum-type cable retracting system, and the disadvantage of the drum system is that it needs a collector ring, so the distance between the drum and the fixed base It must be connected by an electrical connector, and its variable contact resistance may cause noise to the signal, interfere with the control signal, and affect the control accuracy.

Contents of the invention

The present invention provides an automatic cable conveying mechanism with constant tension to solve the problem of slack after the cable is retracted in the existing drum-type cable retracting and unwinding system.

The roller and the fixed base must be connected by an electrical connector. Its variable contact resistance may cause noise to the signal, interfere with the control signal, and affect the control accuracy. An automatic transmission mechanism for constant tension cables is provided.

The fixed tension cable automatic conveying mechanism of the present invention includes fixed pulley parts, moving pulley parts, linear sliders, fixed frames, linear slide rails, constant force springs, cables, vertical plates, horizontal plates, passive long pulleys, and active pulleys , planetary reducer, servo motor and four supporting wheel sets, the fixed pulley part and the moving pulley part are composed of a pulley mounting frame, a pulley support shaft, two fixed plates, three rollers and three bearings, and the pulley mounting frame is inverted U-shaped frame, three rollers are arranged in parallel in the pulley mounting frame, and the three rollers are fixedly installed on the pulley support shaft through three bearings respectively, and the two ends of the pulley support shaft pass through the two side walls of the pulley mounting frame respectively The plate is fixed on the pulley mounting frame, and the fixed pulley part and the moving pulley part are arranged under the fixed frame before and after. The block is fixedly connected, the linear slider is slidingly connected with the linear slide rail, the linear slide rail is fixedly connected with the fixed frame, the constant force spring is arranged behind the moving pulley part and under the fixed frame, and one end of the constant force spring is fixed on the fixed frame , the other end of the constant force spring is fixed on the pulley installation frame on the moving pulley part, the cable is wound on the roller on the fixed pulley part and the roller on the moving pulley part, and the output end of the cable is set on four supporting wheel sets , four support wheel sets are arranged in parallel, one end of each support wheel set is fixed on the vertical plate, the horizontal plate is horizontally arranged above the support wheel set, the rear end surface of the horizontal plate is fixedly connected with the upper surface of the vertical plate, passive The axis of the long conveying wheel and the axis of the active conveying wheel are vertically arranged under the horizontal plate, the cable is clamped by the passive long conveying wheel and the active conveying wheel, the input end of the active conveying wheel is connected with the planetary reducer, and the planetary reducer is connected with the servo motor .

Compared with the prior art, the present invention has the following beneficial effects:

1. The cable of the present invention is driven by mechanical transmission through the system, and the cable is retracted by a constant force spring, so as to ensure that the cable is tight and suitable, and the initial looseness of the cable is eliminated.

2. Both the fixed pulley part and the moving pulley part of the present invention adopt three rollers, which ensures that the cable at one end of the moving pulley part has sufficient output length.

3. The present invention can reduce the signal noise and control the generation of interference signals, increase the control precision, and the control precision is doubled compared with the precision of the drum-type cable retracting and unwinding system.

Description of drawings

Fig. 1 is a perspective view of the overall structure of a constant tension cable automatic conveying mechanism of the present invention;

Fig. 2 is a cross-sectional perspective view of a fixed pulley part 1 or a moving pulley part 2;

Fig. 3 is a schematic diagram of the connection relationship between the cable 7, the support wheel set 8, the vertical plate 9, the horizontal plate 10, the passive conveying long wheel 11, the active conveying wheel 12, the planetary reducer 13 and the servo motor 14.

Detailed ways

Specific Embodiment 1: This embodiment is described in conjunction with FIGS. 1 to 3. This embodiment includes a fixed pulley component 1, a moving pulley component 2, a linear slider 3, a fixed frame 4, a linear slide rail 5, a constant force spring 6, and a cable 7. Vertical plate 9, horizontal plate 10, passive conveying long wheel 11, active conveying wheel 12, planetary reducer 13, servo motor 14 and four support wheel groups 8, fixed pulley part 1 and moving pulley part 2 are all composed of pulleys Mounting frame 1-1, pulley support shaft 1-2, two fixed plates 1-5, three rollers 1-3 and three bearings 1-4 form, pulley mounting frame 1-1 is an inverted U-shaped frame, three The rollers 1-3 are arranged in parallel in the pulley mounting frame 1-1, and the three rollers 1-3 are respectively fixedly installed on the pulley support shaft 1-2 through three bearings 1-4, and the two ends of the pulley support shaft 1-2 are respectively Through the two side walls of the pulley mounting frame 1-1 and fixed on the pulley mounting frame 1-1 by the fixed plate 1-5, the fixed pulley part 1 and the moving pulley part 2 are arranged under the fixed frame 4 front and back, and the fixed pulley part The upper end of the pulley mounting frame 1-1 on 1 is fixedly connected with the fixed frame 4, the upper end of the pulley mounting frame 1-1 on the moving pulley part 2 is fixedly connected with the linear slider 3, and the linear slider 3 is slidingly connected with the linear slide rail 5, The linear slide rail 5 is fixedly connected with the fixed frame 4, the constant force spring 6 is arranged on the back of the moving pulley part 2 and is positioned under the fixed frame 4, one end of the constant force spring 6 is fixed on the fixed frame 4, and the other end of the constant force spring 6 is fixed on the fixed frame 4. One end is fixed on the pulley installation frame 1-1 on the movable pulley part 2, the constant force spring 6 can make the movable pulley part 2 complete the movement of recovering the initial state, and the cable 7 is wound on the roller 1-3 on the fixed pulley part 1 and moves On the rollers 1-3 on the pulley part 2, and the output end of the cable 7 is arranged on four supporting wheel groups 8, the four supporting wheel groups 8 are arranged in parallel, and the four supporting wheel groups 8 are connected to the vertical direction of the cable 7. Support function, one end of each support wheel set 8 is fixed on the vertical plate 9, the horizontal plate 10 is horizontally arranged on the top of the support wheel set 8, the cable 7 is located between the horizontal plate 10 and the support wheel set 8, and the horizontal plate 10 The rear end face of the rear end face is fixedly connected with the upper end face of the vertical plate 9, the axis of the passive conveying long wheel 11 and the axis of the active conveying wheel 12 are vertically arranged below the horizontal plate 10, and the passive conveying long wheel 11 and the active conveying wheel 12 clamp the cable 7 , the input end of the driving transmission wheel 12 is connected with the planetary reducer 13 , and the planetary reducer 13 is connected with the servo motor 14 .

Specific Embodiment 2: This embodiment is described with reference to FIG. 2 . The bearings 1-4 of this embodiment adopt deep groove ball bearings. Other components and connections are the same as those in the first embodiment.

Specific Embodiment 3: This embodiment is described with reference to FIG. 1 and FIG. 3 . The horizontal plate 10 and the vertical plate 9 of this embodiment are integrated. Other compositions and connections are the same as those in Embodiment 1 or 2.

Embodiment 4: This embodiment is described with reference to FIG. 3 . The four support wheel sets 8 of this embodiment are composed of a support shaft 81 and four support wheels 82 , and the four support wheels 82 are fixedly mounted on the support shaft 81 in sequence. Other components and connections are the same as those in the third embodiment.

Embodiment 5: This embodiment is described with reference to FIG. 1 . The passive conveying long wheel 11 and the active conveying wheel 12 of this embodiment are located in front of the supporting wheel set 8 at the front end. Other compositions and connections are the same as those in Embodiment 4.

Specific Embodiment Six: This embodiment is described in conjunction with FIG. 1 and FIG. 2. The three rollers 1-3 on the fixed pulley part 1 of this embodiment are the first roller, the second roller and the third roller from left to right. The three rollers 1-3 on the moving pulley part 2 are the fourth roller, the fifth roller and the sixth roller from left to right, the first roller is directly opposite to the fourth roller, the second roller is directly opposite to the fifth roller, The third roller is opposite to the sixth roller, and one end of the cable 7 is located between the passive conveying long wheel 11 and the active conveying wheel 12, and the other end of the cable 7 winds out from the first roller and enters from the fourth roller Winding out from the bottom, winding in and out from the bottom of the second roller, winding in and out from the top of the fifth roller, winding in and out from the bottom of the third roller, winding in and out from the top of the sixth roller out, wind in from under the third roller and fix it on the third roller. Other compositions and connections are the same as those in Embodiment 5.

Embodiment 7: This embodiment is described with reference to FIG. 1 , and the cable 7 of this embodiment is a multi-core cable. Other compositions and connections are the same as those in Embodiment 6.

Working principle: The servo motor 14 and the planetary reducer 13 rotate forward to output torque, which drives the active conveying wheel 12 to rotate in the positive direction. The passive conveying long wheel 11 and the active conveying wheel 12 clamp the cable 7 to make the cable 7 output. Driven, the moving pulley part 2 overcomes the tension of the constant force spring 6 and moves forward along the linear slide rail 5; when the cable is withdrawn, the servo motor 14 and the planetary reducer 13 reverse the output torque, driving the driving conveying wheel 12 in the opposite direction Rotate, due to the pulling force of the constant force spring 6, the moving pulley part 2 runs to the initial position.

Claims (7)

1. A fixed tension cable automatic delivery mechanism, characterized in that: the fixed tension cable automatic delivery mechanism includes a fixed pulley part (1), a moving pulley part (2), a linear slider (3), a fixed frame (4) , linear slide rail (5), constant force spring (6), cable (7), vertical plate (9), horizontal plate (10), passive conveying long wheel (11), active conveying wheel (12), planetary deceleration Device (13), servo motor (14) and four supporting wheel groups (8), fixed pulley part (1) and moving pulley part (2) are all made of pulley mounting frame (1-1), pulley support shaft (1- 2), two fixed plates (1-5), three rollers (1-3) and three bearings (1-4), the pulley mounting frame (1-1) is an inverted U-shaped frame, and the three rollers ( 1-3) Arranged in parallel in the pulley mounting frame (1-1), the three rollers (1-3) are respectively fixedly installed on the pulley support shaft (1-2) through three bearings (1-4), and the pulley supports The two ends of the shaft (1-2) respectively pass through the two side walls of the pulley mounting frame (1-1) and are fixed on the pulley mounting frame (1-1) through the fixing plate (1-5), and the fixed pulley component (1 ) and the movable pulley part (2) are arranged below the fixed mount (4) front and back, the upper end of the pulley mounting frame (1-1) on the fixed pulley part (1) is fixedly connected with the fixed mount (4), and the movable pulley part (2 ) on the upper end of the pulley mounting frame (1-1) is fixedly connected with the linear slider (3), the linear slider (3) is slidably connected with the linear slide rail (5), and the linear slide rail (5) is connected with the fixed frame (4) Fixedly connected, the constant force spring (6) is arranged on the back of the moving pulley part (2) and below the fixed frame (4), one end of the constant force spring (6) is fixed on the fixed frame (4), and the constant force spring ( 6) The other end is fixed on the pulley installation frame (1-1) on the moving pulley part (2), and the cable (7) is wound around the roller (1-3) on the fixed pulley part (1) and the moving pulley part ( 2) on the rollers (1-3) on the top, and the output end of the cable (7) is arranged on four support wheel sets (8), and the four support wheel sets (8) are arranged in parallel, and each support wheel set (8 ) is fixedly mounted on the vertical plate (9), the horizontal plate (10) is horizontally arranged above the support wheel set (8), and the rear end surface of the horizontal plate (10) is fixedly connected with the upper end surface of the vertical plate (9) , the axes of the passive conveying long wheel (11) and the active conveying wheel (12) are vertically arranged below the horizontal plate (10), and the passive conveying long wheel (11) and the active conveying wheel (12) clamp the cable (7) , the input end of the driving conveying wheel (12) is connected with the planetary reducer (13), and the planetary reducer (13) is connected with the servo motor (14). 2. An automatic transmission mechanism for constant tension cables according to claim 1, characterized in that: said bearings (1-4) are deep groove ball bearings. 3. The automatic constant tension cable conveying mechanism according to claim 1 or 2, characterized in that: the horizontal plate (10) and the vertical plate (9) are integrated. 4. A fixed tension cable automatic conveying mechanism according to claim 3, characterized in that: the four support wheel sets (8) are composed of support shafts (81) and four support wheels (82), and the four support wheels Wheel (82) is fixedly installed on the supporting shaft (81) successively. 5 . The automatic constant tension cable conveying mechanism according to claim 4 , characterized in that: the long passive conveying wheels ( 11 ) and the active conveying wheels ( 12 ) are located in front of the supporting wheel set ( 8 ) at the front end. 6 . 6. A constant tension cable automatic conveying mechanism according to claim 5, characterized in that: the three rollers (1-3) on the fixed pulley member (1) are the first roller, the second roller from left to right The second roller and the third roller, the three rollers (1-3) on the moving pulley part (2) are the fourth roller, the fifth roller and the sixth roller from left to right, the first roller and the fourth roller are facing each other , the second roller is facing the fifth roller, the third roller is facing the sixth roller, one end of the cable (7) is located between the passive conveying long wheel (11) and the active conveying wheel (12), the cable (7) The other end goes out from the top of the first roller, goes in and out from the top of the fourth roller, goes in and out from the bottom of the second roller, goes in and out from the top of the fifth roller, and goes out from the third roller. The bottom of the roller is wound in and the top is wound out, the top of the sixth roller is wound in and the bottom is wound out, and the bottom of the third roller is wound in and fixed on the third roller. 7. An automatic transmission mechanism for cables with constant tension according to claim 6, characterized in that: the cables (7) are multi-core cables.