Active traction device

Abstract

The utility model discloses an active traction device, and relates to the technical field of traction devices. The device comprises a base, mounting plates are arranged at the two ends of the top of the base, a rotating shaft rotationally penetrates through the two mounting plates, one end of the rotating shaft is connected with a motor arranged on the base, and a winding drum is arranged on the rotating shaft; the sliding rod is connected between the two mounting plates; the mounting frame is horizontally and slidably arranged between the two mounting plates, the mounting frame guides a cable, the cable moves left and right back and forth in the take-up and pay-off process, take-up and pay-off are neat, meanwhile, a first rolling sleeve and a second rolling sleeve are matched to apply a clamping force to the cable, and when the first rolling sleeve and the second rolling sleeve rotate reversely, a transmission force is applied to the cable, so that the cable is prevented from being damaged. According to the cable winding device, the section, located between the mounting frame and the winding drum, of the cable is always kept in a straightened state, even if the force loss phenomenon occurs in the traction process, the cable wound on the winding drum can be always kept in a tight state, and it is ensured that the cable is not loosened.

Description

Technical Field

[0001] The present application relates to the technical field of traction devices, and in particular to an active traction device. Background Art

[0002] A traction device generally refers to a traction device used to traction other equipment or objects. Cable traction is a type of traction device. When the cable traction device is in use, the cable needs to be retracted and released. The existing cable is usually wound on a winding drum, and the winding drum rotates to achieve the retraction and release of the cable.

[0003] When winding vertically, the cable can be tightly wound on the winding drum under the influence of gravity. When winding horizontally, and the cable section between the winding drum and the towed object is not completely in a straight state (when towing an object with a pulley body, the object under traction moves, and the moving speed of the object suddenly exceeds the winding speed of the cable), the winding drum is prone to lose strength. Once the cable loses strength, it will become loose, causing the cable on the winding drum to become loose, which in turn causes the layers of cables arranged in order on the winding drum to become disordered and chaotically arranged, and the upper and lower layers are misaligned, making subsequent cable laying operations impossible. Therefore, the present application proposes an active traction device. Summary of the invention

[0004] The purpose of this application is to solve the problems in the above-mentioned background technology, and this application provides an active traction device.

[0005] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions:

[0006] An active traction device, comprising:

[0007] The base has mounting plates at both ends of its top, a rotating shaft is rotatably passed through the two mounting plates, one end of the rotating shaft is connected to a motor arranged on the base, and a winding drum is arranged on the rotating shaft;

[0008] A slide bar connected between two mounting plates, a slide block is slidably sleeved on the slide bar, and a driving member for driving the slide block to slide back and forth is provided on the two mounting plates;

[0009] A rotating rod rotates through two mounting plates, a first pulley assembly is connected between the rotating rod and the rotating shaft, a mounting frame is arranged on the slider, the rotating rod movably passes through the mounting frame, and a first roller sleeve rotates through the mounting frame.

[0010] Furthermore, the driving member includes a reciprocating screw that rotates and passes through two mounting plates, a slider transmission sleeve is arranged on the reciprocating screw, and a second pulley assembly is connected between the reciprocating screw and the rotating shaft.

[0011] Furthermore, a second roller sleeve is rotatably penetrated on the installation frame, and the second roller sleeve is slidably sleeved on the rotating rod and the two are spline-matched.

[0012] Furthermore, annular limiting grooves are provided on the outer surfaces of the first rolling sleeve and the second rolling sleeve.

[0013] Furthermore, the inner wall array of the annular limiting groove is configured with a plurality of anti-slip teeth distributed in an annular shape.

[0014] Furthermore, a screw rod is threaded through the installation frame, a U-shaped frame is rotatably provided at the end of the screw rod, and the first roller sleeve is rotatably provided on the U-shaped frame.

[0015] Furthermore, a worm wheel is fixedly provided on the rotating shaft, and a worm engaged with the worm wheel is fixedly provided on the output shaft of the motor.

[0016] Furthermore, two spring telescopic rods are arranged on the top of the base, and the free ends of the two spring telescopic rods are rotatably connected to a resisting rod.

[0017] The beneficial effects of the present application are as follows: In the present application, an installation frame is horizontally slidably arranged between two installation plates, and the installation frame guides the cable so that the cable moves back and forth left and right during the process of retracting and releasing, so that the retracting and releasing are neat. At the same time, the first roller sleeve and the second roller sleeve cooperate to apply a clamping force to the cable, and a transmission force is applied to the cable when the two rotate in opposite directions, so that a section of the cable located between the installation frame and the winding drum is always kept in a straight state. Even if there is a loss of force during the traction process, the cable wound on the winding drum can always be kept in a tight state to ensure that the cable will not slacken and become loose. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural diagram of this application;

[0019] Figure 2 This is another perspective three-dimensional structure diagram of this application;

[0020] Figure 3 It is a sectional view of the three-dimensional structure of the present application;

[0021] Figure 4 It is a three-dimensional structural diagram of part of this application;

[0022] Figure 5 This application Figure 3 Enlarged view of point A in the middle;

[0023] Figure numerals: 1. base; 2. mounting plate; 3. rotating shaft; 4. motor; 5. winding drum; 6. sliding rod; 7. slider; 8. driving member; 9. rotating rod; 10. first pulley assembly; 11. mounting frame; 12. first roller sleeve; 13. second roller sleeve; 14. annular limiting groove; 15. anti-slip teeth; 16. screw rod; 17. U-shaped frame; 18. worm wheel; 19. worm; 20. spring telescopic rod; 21. resistance rod; 801. reciprocating screw; 802. second pulley assembly. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0025] like Figure 1-Figure 5 As shown, an active traction device proposed in one embodiment of the present application includes:

[0026] The base 1 has mounting plates 2 at both ends of its top, a rotating shaft 3 is rotatably passed through the two mounting plates 2, one end of the rotating shaft 3 is connected to a motor 4 arranged on the base 1, a winding drum 5 is arranged on the rotating shaft 3, one end of the traction cable is fixedly connected to the winding drum 5, and the other end is used to connect to the traction equipment or objects, the motor 4 works, and its output shaft drives the rotating shaft 3 to rotate, thereby driving the winding drum 5 to rotate, so as to retract and release the cable;

[0027] The slide bar 6 is connected between the two mounting plates 2, and a slide block 7 is slidably sleeved on the slide bar 6. A driving member 8 for driving the slide block 7 to slide back and forth is provided on the two mounting plates 2, and the slide block 7 can be driven to slide back and forth horizontally on the slide bar 6 through the driving member 8; a rotating rod 9 rotates and passes through the two mounting plates 2, and a first pulley assembly 10 is connected between the rotating rod 9 and the rotating shaft 3. When the rotating shaft 3 rotates, the rotating rod 9 can be driven to rotate synchronously in the same direction through the linkage of the first pulley assembly 10. A mounting frame 11 is provided on the slide bar 7, and the rotating rod 9 movably passes through the mounting frame 11. A first rolling sleeve 12 is rotatably passed through the mounting frame 11. Preferably, in actual use, the free end of the cable movably passes through the inner frame hole of the mounting frame 11, and the rotating rod 9 cooperates with the first rolling sleeve 12 to The cable is rolled and squeezed. When the cable is reeled in and out, the motor 4 drives the rotating shaft 3 and the rotating rod 9 to rotate synchronously in the same direction, and the winding drum 5 reels and releases the cable. Since the rotating rod 9 cooperates with the first rolling sleeve 12 to roll and squeeze the cable, the rotating rod 9 and the first rolling sleeve 12 rotate synchronously in opposite directions, thereby applying a transmission force to the cable, so that the cable between the winding drum 5 and the installation frame 11 is always kept in a straight state, ensuring that the cable on the winding drum 5 will not be loose. At the same time, in the process of reeling in and out the cable, the driving member 8 drives the slider 7 to slide horizontally back and forth on the sliding rod 6, thereby driving the installation frame 11 to move horizontally back and forth, thereby guiding the cable, so that when the cable is reeled in and out, the cable moves back and forth left and right, so that the cable can be neatly rolled up and wound around the collecting drum 5;

[0028] In the present solution, the installation frame 11 can play a guiding and limiting role for the cable, so that during the process of retraction and release, the cable can be retracted and released back and forth. At the same time, the cooperation between the rotating rod 9 and the first roller sleeve 12 applies a transmission force to the cable. When the cable is reeled in, the transmission force is the same as the reeling force, and when the cable is unwinding, the transmission force is the same as the unwinding force, so that the section of the cable located between the installation frame 11 and the winding drum 5 always remains in a straight state. Even if there is a loss of force during the traction process, the cable wound on the winding drum 5 can always remain tightly fixed, ensuring that the cable will not relax and become loose.

[0029] like Figure 1 As shown, in some embodiments, the driving member 8 includes a reciprocating screw 801 that rotates and passes through the two mounting plates 2, and the slider 7 is driven by a transmission sleeve on the reciprocating screw 801. A second pulley assembly 802 is connected between the reciprocating screw 801 and the rotating shaft 3. When the rotating shaft 3 rotates, the second pulley assembly 802 drives the reciprocating screw 801 to rotate synchronously, and through the transmission cooperation between the reciprocating screw 801 and the slider 7, the slider 7 is driven to slide back and forth horizontally.

[0030] like Figure 4As shown, in some embodiments, a second roller sleeve 13 is rotatably penetrated on the mounting frame 11, and the second roller sleeve 13 is slidably sleeved on the rotating rod 9 and the two are spline-matched. Preferably, the outer surface of the rotating rod 9 is constructed with an external spline, and the inner wall of the second roller sleeve 13 is constructed with an internal spline that matches the external spline. Through the cooperation of the spline, the second roller sleeve 13 can slide along the rotating rod 9. At the same time, when the rotating rod 9 rotates, the second roller sleeve 13 is driven to rotate synchronously. Through the provision of the second roller sleeve 13, the cable is not in direct contact with the rotating rod 9, reducing the torsional shear stress on the cable. The cable is in contact with the second roller sleeve 13 and the first roller sleeve 12, and the first roller sleeve 12 cooperates with the second roller sleeve 13 to roll against the cable, so that the auxiliary transmission effect of the cable is better.

[0031] like Figure 4 As shown, in some embodiments, an annular limiting groove 14 is provided on the outer surfaces of the first roller sleeve 12 and the second roller sleeve 13. Through the annular limiting groove 14, after the first roller sleeve 12 and the second roller sleeve 13 clamp and contact the cable, the cable is just located in the two annular limiting grooves 14, so that when the installation frame 11 reciprocates horizontally, the cable is always between the first roller sleeve 12 and the second roller sleeve 13, thereby ensuring the auxiliary transmission effect of the two on the cable.

[0032] like Figure 4 As shown, in some embodiments, the inner wall array of the annular limit groove 14 is constructed with a plurality of anti-slip teeth 15 distributed in a ring shape. The anti-slip teeth 15 are arranged to increase the contact friction between the cable and the first roller sleeve 12 and the second roller sleeve 13, so that when the first roller sleeve 12 and the second roller sleeve 13 rotate synchronously in opposite directions, they can effectively assist the transmission of the cable, ensuring that the auxiliary transmission stress is the same as the retraction and release stress of the winding drum 5.

[0033] like Figure 4 As shown, in some embodiments, a screw rod 16 is threaded through the mounting frame 11, and a U-shaped frame 17 is rotatably provided at the end of the screw rod 16. The first roller sleeve 12 is rotatably provided on the U-shaped frame 17. Preferably, the outer walls on both sides of the U-shaped frame 17 are respectively overlapped with the opposite sides of the inner wall of the mounting frame 11, and the screw rod 16 is twisted to rotate and move, thereby driving the U-shaped frame 17 to rise and fall, so that the distance between the first roller sleeve 12 and the second roller sleeve 13 can be adjusted, which can ensure the applicability of cables of different sizes, and at the same time, can ensure that the first roller sleeve 12 and the second roller sleeve 13 effectively clamp and resist the cables, while ensuring effective auxiliary transmission, and can also ensure the tightness of the cables rolled up on the collecting drum 5.

[0034] like Figure 2As shown, in some embodiments, a worm wheel 18 is fixedly provided on the rotating shaft 3, and an output shaft of the motor 4 is fixedly provided with a worm 19 which is engaged with the worm wheel 18. When the motor 4 does work, its output shaft drives the worm 19 to rotate, and the transmission engagement between the worm 19 and the worm wheel 18 is achieved, thereby driving the rotating shaft 3 to rotate. At the same time, through the transmission coordination between the worm 19 and the worm wheel 18, when the cable is released to a certain length for pulling (not by winding the cable to achieve pulling, but by relying on the cable for pulling), the pulling stress will not act on the motor 4, so as to protect the motor 4.

[0035] like Figure 5 As shown, in some embodiments, two spring telescopic rods 20 are provided on the top of the base 1, and the free ends of the two spring telescopic rods 20 are rotatably connected to the resistance rod 21. Preferably, the spring telescopic rod 20 includes an outer rod provided on the base 1, an inner rod is movably inserted in the outer rod, a spring is connected between the outer rod and the inner rod, and the resistance rod 21 is rotatably connected between the two inner rods. Through the elasticity of the spring telescopic rod 20, the resistance rod 21 resists the cable wound on the winding drum 5. When retracting and releasing, the resistance rod 21 can always resist the cable located at the outermost layer by utilizing elastic adaptive adjustment, further ensuring that the cable will not be loose, thereby improving practicality.

[0036] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An active traction device, characterized in that: include: A base (1) is provided with mounting plates (2) at both ends of its top, a rotating shaft (3) is rotatably passed through the two mounting plates (2), one end of the rotating shaft (3) is connected to a motor (4) provided on the base (1), and a winding drum (5) is provided on the rotating shaft (3); A slide bar (6) is connected between the two mounting plates (2); a slide block (7) is slidably sleeved on the slide bar (6); and a driving member (8) for driving the slide block (7) to slide back and forth is provided on the two mounting plates (2); A rotating rod (9) is rotatably passed through the two mounting plates (2); a first pulley assembly (10) is connected between the rotating rod (9) and the rotating shaft (3); a mounting frame (11) is provided on the slider (7); the rotating rod (9) movably passes through the mounting frame (11); and a first roller sleeve (12) is rotatably passed through the mounting frame (11).

2. The active traction device according to claim 1, characterized in that: The driving member (8) comprises a reciprocating screw (801) which rotates and passes through the two mounting plates (2); a transmission sleeve of the slider (7) is arranged on the reciprocating screw (801); and a second pulley assembly (802) is connected between the reciprocating screw (801) and the rotating shaft (3).

3. The active traction device according to claim 1, characterized in that: A second roller sleeve (13) is rotatably passed through the installation frame (11), and the second roller sleeve (13) is slidably sleeved on the rotating rod (9) and the two are spline-matched.

4. The active traction device according to claim 3, characterized in that: The outer surfaces of the first rolling sleeve (12) and the second rolling sleeve (13) are both provided with an annular limiting groove (14).

5. The active traction device according to claim 4, characterized in that: The inner wall array of the annular limiting groove (14) is configured with a plurality of anti-slip teeth (15) distributed in an annular shape.

6. The active traction device according to claim 1, characterized in that: A screw rod (16) is threadedly passed through the installation frame (11), a U-shaped frame (17) is rotatably disposed at the end of the screw rod (16), and the first rolling sleeve (12) is rotatably disposed on the U-shaped frame (17).

7. The active traction device according to claim 1, characterized in that: A worm wheel (18) is fixedly provided on the rotating shaft (3), and a worm (19) that is meshed with the worm wheel (18) is fixedly provided on the output shaft of the motor (4).

8. The active traction device according to claim 1, characterized in that: Two spring telescopic rods (20) are arranged on the top of the base (1), and the free ends of the two spring telescopic rods (20) are rotatably connected to a resisting rod (21).

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