Universal rope loosening prevention mechanism on electric hoist

Abstract

The utility model relates to the technical field of rope loosening prevention of electric hoists, and discloses a universal rope loosening prevention mechanism on an electric hoist, which comprises a fixed plate and a hanging beam positioned above the fixed plate, the lower side of the fixed plate is fixedly connected with a fixed bracket, one side of the fixed bracket is fixedly connected with a connecting plate, one end of the connecting plate is rotatably connected with a movable bracket, and the movable bracket is fixedly connected with a movable bracket. A longitudinal movement driving mechanism enabling the electric hoist to move longitudinally along the hanging beam is arranged above the fixing plate, a steel rope hoisting mechanism for hoisting is arranged on the lower side of the fixing plate, and a steel rope bending mechanism for preventing a steel rope from getting close to the bottom and loosening is arranged on one side of the fixing support. After the rope blocking shaft is driven to make contact with the ground of a hoisted object, the loosened rope is tensioned, the rope loosening prevention effect is achieved, the structure is simple, performance is reliable, and high practicability is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric hoists, in particular to a universal anti-loose rope mechanism on electric hoists. Background Art

[0002] During the use of electric hoists, the hoist often touches the platform, the hoisted object or even the ground due to various misoperations or lifting needs. In this case, if the lowering operation continues or the lowering button is not released in time, the wire rope will become loose, and the wire rope on the drum will spread out, which will damage the electric hoist or cause a safety accident. The existing electric hoist anti-loose rope mechanism often adopts the method of setting baffles and clamps on the periphery of the wire rope drum to prevent the wire rope from loosening and entanglement, but this still cannot solve the problem of the loose wire rope swaying in the air after the hoist touches the ground.

[0003] For example, a Chinese utility model patent with announcement number CN206927523U discloses an anti-slip and anti-tangling device for electric hoist wire rope. Although the solution adds gap anti-tangling and anti-slip flanges at both ends of the rope drum housing, the gaps between the flanges at both ends and the rope drum are tight, which prevents the wire rope from entering the gap between the drum and the rope drum housing, preventing the wire rope from loosening and winding, but the loosening problem of the wire rope leaving the drum cannot be effectively controlled. Based on this, a universal anti-loosening rope mechanism for electric hoists is proposed. Utility Model Content

[0004] In order to solve the technical problem of electric hoisting, the utility model provides a universal anti-loose rope mechanism for the electric hoist.

[0005] The utility model is implemented by the following technical scheme: a universal anti-loose rope mechanism on an electric hoist, comprising a fixed plate and a hanging beam located above the fixed plate, a fixed bracket fixedly connected to the lower side of the fixed plate, a connecting plate fixedly connected to one side of the fixed bracket, a movable bracket rotatably connected to one end of the connecting plate, a longitudinal driving mechanism for moving the electric hoist longitudinally along the hanging beam is arranged above the fixed plate, a steel rope lifting mechanism for lifting is arranged on the lower side of the fixed plate, and a steel rope bending mechanism for preventing the steel rope from touching the bottom and loosening is arranged on one side of the fixed bracket.

[0006] As a further improvement of the above scheme, the longitudinal movement driving mechanism includes grooves opened on both sides of the suspension beam, rollers are arranged on the inner sides of the two grooves, and a roller driving mechanism is arranged on one side of the roller to move the roller along the inside of the groove.

[0007] As a further improvement of the above solution, the roller driving mechanism includes a limiting plate fixedly connected to both sides of the fixing plate, a servo motor is fixedly connected to one side of the limiting plate, and an output end of the servo motor is connected to the roller.

[0008] As a further improvement of the above scheme, the wire rope lifting mechanism includes a driving motor fixedly connected to one side of a fixed plate, the output end of the driving motor is fixedly connected to a rope drum rotatably connected to the lower side of the fixed plate, a steel wire rope is arranged on the rope drum, and the lower end of the steel wire rope is fixedly connected to a sling.

[0009] As a further improvement of the above scheme, the wire rope bending mechanism includes a rope blocking shaft fixedly connected to one end of the movable bracket, the rope blocking shaft is provided with a No. 1 pulley cooperating with the wire rope, the movable bracket is rotatably connected with a central shaft at the center of gravity, the central shaft is provided with a No. 2 pulley cooperating with the wire rope and the No. 1 pulley, and the other end of the movable bracket is provided with a rotating drive mechanism which makes the rope blocking shaft rotate leftward around the central axis.

[0010] As a further improvement of the above solution, the rotation drive mechanism includes a swing shaft fixedly connected to one end of the movable bracket, and a counterweight block is provided at one end of the swing shaft.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. The utility model cooperates with each other through the swing shaft, counterweight, movable bracket, rope blocking shaft, No. 1 pulley, etc. When the sling touches the platform, the hoisted object or even the ground, the descending operation continues or the descending button is not released in time, and the wire rope becomes loose, the wire rope loses the tension of the weight and becomes loose. Under the action of its own gravity, the counterweight pulls the movable bracket to rotate downward according to the lever principle, and pushes the No. 1 pulley to rotate to the left, thereby pulling the slackened wire rope to one side, thereby preventing the wire rope from loosening.

[0013] 2. The utility model has a central axis, a rope-blocking axis and a swinging axis installed on a movable bracket, and has a simple and reliable structure, is easy to maintain, has a long service life, does not require electricity, and is suitable for various occasions.

[0014] 3. The anti-loose rope mechanism of the utility model has strong versatility and is suitable for various types of wire rope electric hoists. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front view of a universal anti-loose rope mechanism on an electric hoist provided by the utility model;

[0016] Figure 2 A side view of a universal anti-loose rope mechanism on an electric hoist provided by the utility model;

[0017] Figure 3 The utility model provides a top view of a universal anti-loose rope mechanism on an electric hoist.

[0018] Description of main symbols:

[0019] 1. Lifting beam; 2. Limiting plate; 3. Fixed plate; 4. Groove; 5. Rope drum; 6. Rope stop shaft; 7. Pulley No. 1; 8. Movable bracket; 9. Connecting plate; 10. Center axis; 11. Lifting device; 12. Wire rope; 13. Pulley No. 2; 14. Swinging shaft; 15. Counterweight; 16. Fixed bracket; 17. Driving motor; 18. Servo motor; 19. Roller. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0021] Example:

[0022] Please combine Figure 1-Figure 3 The universal anti-loose rope mechanism on an electric hoist of the present embodiment includes a fixed plate 3 and a hanging beam 1 located above the fixed plate 3. A fixed bracket 16 is fixedly connected to the lower side of the fixed plate 3, a connecting plate 9 is fixedly connected to one side of the fixed bracket 16, and a movable bracket 8 is rotatably connected to one end of the connecting plate 9. The movable bracket 8 is a large opening, obtuse-angle bending structure. A longitudinal driving mechanism for moving the electric hoist longitudinally along the hanging beam 1 is arranged above the fixed plate 3, a steel rope lifting mechanism for lifting is arranged on the lower side of the fixed plate 3, and a steel wire rope bending mechanism for preventing the steel wire rope from touching the bottom and loosening is arranged on one side of the fixed bracket 16.

[0023] Please combine Figure 3 As shown, the longitudinal driving mechanism includes grooves 4 opened on both sides of the suspension beam 1, and rollers 19 are arranged on the inner sides of the two grooves 4. The rollers 19 can be arranged in different numbers of roller combinations according to the load requirements of the electric hoist. A roller driving mechanism is arranged on one side of the roller 19 to move the roller 19 along the inside of the groove 4.

[0024] Please combine Figure 2 As shown, the roller drive mechanism includes a limit plate 2 fixedly connected to both sides of the fixed plate 3, a servo motor 18 is fixedly connected to one side of the limit plate 2, the output end of the servo motor 18 is connected to the roller 19, the servo motor 18 is a pure copper, high-performance motor, and a reducer and a brake are arranged on one side of the servo motor 18. The reducer can convert the high-speed rotation generated by the motor into a low-speed and high-torque torque, and gear reduction is adopted; in order to ensure that the electric hoist can stop steadily during operation, the brake is used to generate a braking torque to block the movement of the lifting rope.

[0025] Please combine Figure 1As shown, the wire rope lifting mechanism includes a rope drum 5 rotatably connected to the lower side of the fixed plate 3, one side of the rope drum 5 is connected to the driving motor 17, which is responsible for the start and stop of the rope drum 5 and realizes the retraction and release of the wire rope 12. The rope drum 5 is provided with a wire rope 12, and the lower end of the wire rope 12 is fixedly connected to a sling 11, and the sling 11 is provided with an anti-falling clamp device, and one side of the rope drum 5 is provided with a wire arranger to ensure that the wire oil rope is in a vertical straight line with the first pulley 7 and the second pulley 13 after coming out of the rope drum 5.

[0026] Please combine Figure 1 As shown, the wire rope bending mechanism includes a rope-blocking shaft 6 fixedly connected to one end of a movable bracket 8, a No. 1 pulley 7 cooperating with the wire rope 12 is arranged on the rope-blocking shaft 6, a central shaft 10 is rotatably connected at the center of gravity of the movable bracket 8, a No. 2 pulley 13 cooperating with the wire rope 12 and the No. 1 pulley 7 is arranged on the central shaft 10, and a rotating drive mechanism is arranged at the other end of the movable bracket 8 to make the rope-blocking shaft 6 rotate leftward around the central shaft 10.

[0027] Please combine Figure 1 As shown, the rotation drive mechanism includes a swing shaft 14 fixedly connected to one end of the movable bracket 8, and a counterweight block 15 is provided at one end of the swing shaft 14. The counterweight block 15 is set to 5KG to ensure that when the rope becomes loose, the movable bracket 8 is driven to rotate at the first time.

[0028] The implementation principle of a universal anti-loose rope mechanism on an electric hoist in the embodiment of the present application is as follows: the heavy object to be hoisted is hung on the sling 11, and when the rope drum 5 is driven to rotate by the motor on one side, the hoisted heavy object slowly falls, and the wire rope 12 first passes through the positioning wheel on one side of the rope drum, and then vertically lowers the heavy object through the No. 1 pulley 7 and the No. 2 pulley 13. When the heavy object touches the ground, the wire rope 12 is relaxed and the tension of the wire rope 12 disappears, that is, the resistance to the No. 1 pulley 7 and the No. 2 pulley 13 on both sides also disappears. At this time, the movable bracket 8 rotates under the support of the central axis 10 on the connecting plate 9, so that the rope blocking shaft 6 and the No. 1 pulley 7 rotate to the left, and the relaxed wire rope 12 is pulled to the left, thereby realizing the anti-loosening function.

[0029] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A universal anti-loose rope mechanism for an electric hoist, comprising a fixing plate (3) and a hanging beam (1) located above the fixing plate, characterized in that: A fixed bracket (16) is fixedly connected to the lower side of the fixed plate (3), a connecting plate (9) is fixedly connected to one side of the fixed bracket (16), and a movable bracket (8) is rotatably connected to one end of the connecting plate (9). A longitudinal driving mechanism for moving the electric hoist longitudinally along the suspension beam (1) is arranged above the fixed plate (3), a steel rope lifting mechanism for lifting is arranged on the lower side of the fixed plate (3), and a steel rope bending mechanism for preventing the steel rope from touching the bottom and becoming loose is arranged on one side of the fixed bracket (16).

2. A universal anti-loose rope mechanism for an electric hoist as claimed in claim 1, characterized in that: The longitudinal movement driving mechanism comprises grooves (4) provided on both sides of the suspension beam (1), rollers (19) being provided on the inner sides of the two grooves (4), and a roller driving mechanism for moving the roller (19) along the inside of the groove (4) being provided on one side of the roller (19).

3. A universal anti-loose rope mechanism for an electric hoist as claimed in claim 2, characterized in that: The roller drive mechanism comprises a limit plate (2) fixedly connected to both sides of a fixed plate (3), one side of the limit plate (2) is fixedly connected to a servo motor (18), and the output end of the servo motor (18) is connected to a roller (19).

4. A universal anti-loose rope mechanism for an electric hoist as claimed in claim 1, characterized in that: The wire rope lifting mechanism comprises a driving motor (17) fixedly connected to one side of a fixed plate (3); an output end of the driving motor (17) is fixedly connected to a rope drum (5) rotatably connected to the lower side of the fixed plate (3); a steel wire rope (12) is arranged on the rope drum (5); and a lower end of the steel wire rope (12) is fixedly connected to a sling (11).

5. The universal anti-loose rope mechanism for electric hoist according to claim 1, characterized in that: The wire rope bending mechanism comprises a rope-blocking shaft (6) fixedly connected to one end of a movable bracket (8), a first pulley (7) cooperating with a wire rope (12) being arranged on the rope-blocking shaft (6), a center shaft (10) being rotatably connected at the center of gravity of the movable bracket (8), a second pulley (13) cooperating with the wire rope (12) and the first pulley (7) being arranged on the center shaft (10), and a rotation driving mechanism for causing the rope-blocking shaft (6) to rotate counterclockwise around the center shaft (10).

6. A universal anti-loose rope mechanism for an electric hoist as claimed in claim 5, characterized in that: The rotary drive mechanism comprises a swing shaft (14) fixedly connected to one end of the movable bracket (8), and a counterweight block (15) is arranged at one end of the swing shaft (14).

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