Anti-falling automatic winch hoist

Abstract

The invention discloses an anti-falling type automatic winch hoist which comprises a thickened base, two foot brackets are symmetrically fixed to the upper end face of the thickened base, and a winding drum is rotationally connected between the foot brackets; the steel wire rope is wound on the winding drum, a speed reducer is installed on the thickened base and located on the outer side of one of the foot brackets, and the output end of the speed reducer is connected with the winding drum; the rope feeding frame is vertically fixed to one side of the thickened base and located in the rope feeding direction of the winding drum, and the upper end of the rope feeding frame is rotationally connected with a rotating wheel; the band-type brake unit is vertically installed on the rope feeding frame in a sliding mode and located below the rotating wheel, the steel wire rope penetrates through the band-type brake unit, and the band-type brake unit conducts emergency braking on the steel wire rope in time when the steel wire rope is broken accidentally; the speed reduction unit in the band-type brake unit can achieve preferential speed reduction braking on the steel wire rope, and the brake disc in the band-type brake unit conducts emergency braking on the steel wire rope in time, so that the anti-falling effect is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of winches, and in particular is an anti-falling automatic winch hoist. Background Art

[0002] An automated winch hoist is a mechanical device used to lift, lower, or move heavy objects. It is widely used in industries such as water conservancy, construction, mining, and ports, primarily for hoisting, pulling, unloading, and pushing heavy objects. Conventional automated winch hoists consist of a motor, reducer, brake, drum, and wire rope. In an emergency, the brake can quickly lock the wire rope to prevent the load from accidentally falling. However, it lacks a fall prevention function, which means that in the event of a sudden power outage or malfunction during use, the wire rope cannot be locked, causing the load to fall.

[0003] In the prior art, such as the invention patent with publication number CN117068981B, if the wire rope breaks when lifting heavy objects, the upward movement of the clamping ring can promptly trigger the component in the clamping part, and the clamping component will clamp the wire rope, thereby achieving the effect of preventing falls and reducing the safety hazards of workers; however, the clamping component used therein only clamps the vertically transmitted wire rope through the clamping plate, and the single-point clamping force generated by it may change due to material fatigue, wear or external factors (such as temperature changes), resulting in unreliable clamping effect; and the continuous friction between the wire rope and the clamping plate will cause wear on both, especially when the clamping force is insufficient, which can easily cause the wire rope to slip or even break;

[0004] Therefore, it is necessary to provide an anti-falling automatic winch hoist to solve the problems raised in the above background technology. Summary of the Invention

[0005] To achieve the above object, the present invention provides the following technical solution: an anti-falling automatic winch hoist, comprising:

[0006] The thickened base has two foot brackets symmetrically fixed on its upper end surface, and a reel is rotatably connected between the foot brackets;

[0007] A steel wire rope is wound on the drum, and a reducer is installed on the outer side of one of the foot brackets on the thickened base, and the output end of the reducer is connected to the drum;

[0008] an electromagnetic brake fixed to the thickened base and located outside the other of the foot brackets;

[0009] A rope feeding frame is vertically fixed to one side of the thickened base and is located in the rope feeding direction of the drum. The upper end of the rope feeding frame is rotatably connected to a rotating wheel, and the steel wire rope passes around the rotating wheel;

[0010] A brake unit is vertically slidably mounted on the rope feeding frame and is located below the rotating wheel. The steel wire rope passes through the brake unit. The brake unit applies an emergency brake to the steel wire rope in time when the steel wire rope breaks accidentally.

[0011] The brake unit includes:

[0012] A support frame is slidably mounted on the rope feeding frame, and a wire drum is horizontally fixed on the upper end of the support frame;

[0013] A rope guide groove is provided in the wire drum, and the wire rope is transmitted along the track of the rope guide groove; a rope feeding port and a rope outlet port are provided on the wire drum, and the two ends of the rope guide groove are respectively connected to the rope feeding port and the rope outlet port;

[0014] Multiple spool groups, each of which is composed of two symmetrically arranged rollers, and multiple spool groups are evenly arranged along the front half of the rope guide groove;

[0015] A gate disc is coaxially mounted in the wire drum, the gate disc is slidably connected to the wire drum, and a gate plate corresponding to the rope guide groove is provided in the gate disc, the gate plate and the rear half of the rope guide groove are slidably assembled along the axial direction of the wire drum;

[0016] A propulsion mechanism is fixed on the support frame at a side close to the gate disc, and an output end of the propulsion mechanism is connected to the gate disc;

[0017] A control system is provided outside the line drum, and the control system is electrically connected to the propulsion mechanism;

[0018] The deceleration unit is centrally arranged in the wire drum and located in the rear half of the rope guide groove. The propulsion mechanism is connected to the deceleration unit. The deceleration unit mechanically decelerates the wire rope in the rope guide groove before the brake disc.

[0019] Furthermore, preferably, the distance between the brake unit and the rotating wheel during the up and down sliding adjustment of the support frame is not less than 0.8m.

[0020] Furthermore, as a preference, a speed measuring wheel is further provided in the rope guide groove in the wire drum, and the speed measuring wheel synchronously monitors the transmission speed of the wire rope in the rope guide groove during rotation. When the speed measuring wheel detects an abnormality in the transmission speed of the wire rope, it feeds back an electrical signal to the control system, and the control system controls the propulsion mechanism to perform a braking operation.

[0021] An alarm is also provided outside the reel.

[0022] Furthermore, preferably, the cross section of the rope guide groove is an S-shaped structure; and the cross section of the gate plate on the gate disc is a C-shaped structure.

[0023] Furthermore, preferably, the deceleration unit includes:

[0024] Slide grooves are circumferentially distributed in the wire drum, and each slide groove is slidably connected to a thimble;

[0025] A pressure block is slidably disposed in each of the slide grooves, one end of each pressure block is fixed to the ejector pin, and a convex edge plate is fixed on the outer wall of the pressure block;

[0026] A rubber pad is attached to the inner wall of the rope guide groove;

[0027] A sliding sleeve is coaxially slidably connected in the wire drum, and a plurality of connecting rods corresponding to the sliding grooves are provided on the sliding sleeve, and one end of the connecting rod is hinged to the ejector pin.

[0028] Furthermore, preferably, the propulsion mechanism includes:

[0029] An outer shaft cylinder, one end of which is coaxially fixed with a sleeve, a fixed shaft tube is slidably connected to the sleeve, and one end of the fixed shaft tube is connected to the brake disc;

[0030] A fixed ring is sleeved on the fixed shaft tube, and a shift rod is connected to the outer shaft cylinder so as to rotate symmetrically up and down, and one end of the shift rod abuts against the fixed ring;

[0031] The propulsion cylinder is arranged corresponding to the shifting rod. One end of the propulsion cylinder is rotatably connected to the outer shaft cylinder, and the other end is hinged to the shifting rod.

[0032] Furthermore, as a preference, a main shaft is rotatably connected to the center of the outer shaft cylinder, and one end of the main shaft extends into a sliding sleeve in the reduction unit;

[0033] A connecting pipe seat is fixed on one side of the wire drum, a guide shaft is fixed in the center of the connecting pipe seat, and one end of the sliding sleeve is slidably connected to the guide shaft;

[0034] A driving motor is horizontally mounted on one side of the outer shaft cylinder, and an output end of the driving motor is connected to the main shaft.

[0035] Furthermore, preferably, a tooth groove is formed on the side wall of the main shaft, and a tooth ring convex edge is formed on the inner wall of the sliding sleeve, and the tooth ring convex edge is in contact with the tooth groove, so that the main shaft can push the sliding sleeve to move back and forth axially at a high frequency through the staggered engagement of the tooth ring convex edge and the tooth groove during continuous rotation;

[0036] A support spring is provided between the sliding sleeve and the guide shaft.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] The brake unit used in the present invention is provided with an S-shaped guide rope groove, and the wire rope can be transmitted along the S-shaped guide rope groove. When the wire rope breaks accidentally, the deceleration unit provided in the brake unit can lift the wire rope at multiple points through multiple thimbles and pressure blocks, so that friction contact is achieved between the wire rope and the rubber pad to achieve priority deceleration and braking of the wire rope, and the brake disc in the brake unit instantly performs emergency braking on the wire rope to achieve an anti-fall effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a complete structural diagram of the present invention;

[0040] Figure 2 Schematic diagram of the structure of the brake unit in the present invention;

[0041] Figure 3 Schematic diagram of the internal structure of the centerline drum of the present invention;

[0042] Figure 4 for Figure 3 A schematic diagram of the structure at center A;

[0043] Figure 5 Schematic diagram of the structure of the propulsion mechanism of the present invention;

[0044] Figure 6 for Figure 5 A magnified schematic diagram of the structure at point B in the middle;

[0045] In the figure: 1. Reel; 11. Thickened base; 12. Foot support; 13. Rope feeding frame; 14. Rotating wheel; 2. Brake unit; 21. Support frame; 22. Reel; 23. Rope guide groove; 24. Reel assembly; 25. Brake disc; 26. Speed measuring wheel; 3. Propulsion mechanism; 31. Outer shaft cylinder; 32. Sleeve; 33. Fixed shaft tube; 34. Fixed ring; 35. Push rod; 36. Propulsion cylinder; 37. Main shaft; 38. Drive motor; 4. Reduction unit; 41. Ejector pin; 42. Pressure block; 43. Rubber pad; 44. Sliding sleeve; 45. Connecting rod; 46. Slide groove; 47. Tooth groove; 5. Connecting pipe seat; 51. Guide shaft. DETAILED DESCRIPTION

[0046] See also Figures 1-6 In an embodiment of the present invention, an anti-falling automatic winch hoist comprises:

[0047] A thickened base 11 has two foot brackets 12 symmetrically fixed on its upper end surface, and the reel 1 is rotatably connected between the foot brackets 12;

[0048] A steel wire rope is wound on the drum 1. A reducer (not shown) is installed on the outside of one of the foot brackets 12 on the thickened base 11. The output end of the reducer is connected to the drum 1. The reducer provides driving force for the rotation of the drum 1.

[0049] The electromagnetic brake is fixed on the thickened base 11 and is located outside the other foot bracket 12; the electromagnetic brake is used to provide braking for the reel 1 when it stops;

[0050] The rope feeding frame 13 is vertically fixed to one side of the thickened base 11 and is located in the rope feeding direction of the drum 1. The upper end of the rope feeding frame 13 is rotatably connected to the rotating wheel 14, and the steel wire rope passes around the rotating wheel 14;

[0051] The brake unit 2 is vertically slidably mounted on the rope feeding frame 13 and is located below the rotating wheel 14. The wire rope passes through the brake unit 2. The brake unit 2 can promptly apply emergency brakes to the wire rope when the wire rope breaks unexpectedly. In most cases, the wire rope rubs against the surface of the drum 1 or other components, resulting in increased local wear. Therefore, it is very easy for the drum 1 to break during the winding or releasing process. The brake unit 2 can promptly apply emergency brakes to the wire rope in an emergency, thereby achieving a fall prevention effect.

[0052] The brake unit 2 includes:

[0053] A support frame 21 is slidably mounted on the rope feeding frame 13, and a wire drum 22 is horizontally fixed on the upper end of the support frame 21;

[0054] A rope guide groove 23 is provided in the wire drum 22, along which the wire rope is transmitted. A rope feed port and a rope outlet port are provided on the wire drum 22, and both ends of the rope guide groove 23 are connected to the rope feed port and the rope outlet port, respectively. The wire rope enters through the rope feed port and is transmitted along the rope guide groove 23, and is then released from the rope outlet port.

[0055] Multiple pulley groups 24, each of which is composed of two symmetrically arranged rollers, are evenly arranged along the front half of the guide rope groove 23 to ensure smooth transmission of the wire rope and reduce internal transmission friction.

[0056] The gate disc 25 is coaxially mounted in the wire drum 22. The gate disc 25 is slidably connected to the wire drum 22. A gate plate corresponding to the rope guide groove 23 is provided in the gate disc 25. The gate plate and the rear half of the rope guide groove 23 are slidably assembled along the axial direction of the wire drum 22.

[0057] The propulsion mechanism 3 is fixed on the support frame 21 on a side close to the gate disc 25, and the output end of the propulsion mechanism 3 is connected to the gate disc 25;

[0058] A control system is provided outside the line drum 22 and is electrically connected to the propulsion mechanism 3;

[0059] The deceleration unit 4 is centered in the wire drum 22 and is located in the rear half of the guide rope groove 23. The propulsion mechanism 3 is connected to the deceleration unit 4. The deceleration unit 4 mechanically decelerates the wire rope in the guide rope groove 23 before the gate disc 25, thereby significantly reducing the wire rope transmission speed, helping to reduce the impact force caused by sudden braking of the gate disc 25, avoiding excessive mechanical stress on the system, thereby extending the service life of the equipment, and reducing the workload of the gate disc 25. This pre-deceleration method makes the braking of the entire system smoother and more reliable, reduces the wear and failure risks of individual components, and provides more time for subsequent emergency braking or braking actions.

[0060] In this embodiment, the distance between the brake unit 2 and the wheel 14 during the up and down sliding adjustment of the support frame 21 is not less than 0.8m. This distance is the limit response distance of the brake unit 2, ensuring that the brake unit 2 has sufficient reaction time and space to deal with emergencies.

[0061] As a preferred embodiment, a speed measuring wheel 26 is further provided in the rope guide groove 23 in the wire drum 22. The speed measuring wheel 26 synchronously monitors the transmission speed of the wire rope in the rope guide groove 23 during the rotational motion. When the speed measuring wheel 26 detects an abnormality in the transmission speed of the wire rope, it feeds back an electrical signal to the control system, and the control system controls the propulsion mechanism 3 to perform a braking operation.

[0062] An alarm (not shown in the figure) is also provided outside the reel 1 .

[0063] In this embodiment, the cross-section of the guide rope groove 23 is an S-shaped structure; and the cross-section of the gate plate on the gate disc 25 is a C-shaped structure, wherein the wire rope is transmitted in an S-shape in the guide rope groove 23, and the S-shaped guide rope groove 23 increases the path length and friction of the wire rope; when the wire rope breaks, the S-shaped path prevents the heavy object from falling freely immediately, but gradually decelerates through a longer path, thereby effectively slowing down the falling speed and reducing the impact force. At the same time, the longer path can bring more contact points and greater friction resistance, which provides the system with extra time to trigger emergency braking, thereby improving overall safety.

[0064] In this embodiment, the deceleration unit 4 includes:

[0065] Slide grooves 46 are circumferentially distributed in the wire drum 22, and each slide groove 46 is slidably connected to a thimble 41;

[0066] A pressure block 42 is slidably disposed in each of the slide grooves 46 , one end of each of the pressure blocks 42 is fixed to the ejector pin 41 , and a convex plate is fixed to the outer wall of the pressure block 42 ;

[0067] A rubber pad 43 is attached to the inner wall of the rope guide groove 23;

[0068] The sliding sleeve 44 is coaxially slidably connected to the wire drum 22. The sliding sleeve 44 is provided with a plurality of connecting rods 45 corresponding to the sliding grooves 46. One end of the connecting rod 45 is hinged to the thimble 41. That is to say, the sliding sleeve 44 can push the thimble 41 to slide along the sliding groove 46 through each connecting rod 45 during axial sliding adjustment, so that the pressure block 42 on each thimble 41 partially lifts the wire rope, so that friction contact is achieved between the wire rope and the rubber pad 43.

[0069] In this embodiment, the propulsion mechanism 3 includes:

[0070] The outer shaft cylinder 31 has a sleeve 32 coaxially fixed at one end thereof, and a fixed shaft tube 33 is slidably connected to the sleeve 32, and one end of the fixed shaft tube 33 is connected to the gate disc 25;

[0071] A fixed ring 34 is sleeved on the fixed shaft tube 33. A shift rod 35 is connected to the outer shaft cylinder 31 so as to rotate symmetrically up and down. One end of the shift rod 35 abuts against the fixed ring 34.

[0072] The propulsion cylinder 36 is arranged corresponding to the shift rod 35. One end of the propulsion cylinder 36 is rotatably connected to the outer shaft cylinder 31, and the other end is hinged to the shift rod 35. Therefore, the propulsion cylinder 36 can push the fixed shaft tube 33 on the fixed ring 34 toward the side of the wire drum 22 during the propulsion operation, so that the gate disc 25 can achieve emergency braking of the wire rope.

[0073] As a preferred embodiment, the outer shaft cylinder 31 is centrally connected to a main shaft 37, and one end of the main shaft 37 extends into a sliding sleeve 44 in the reduction unit 4;

[0074] A connecting pipe seat 5 is fixed to one side of the wire drum 22, a guide shaft 51 is fixed in the center of the connecting pipe seat 5, and one end of the sliding sleeve 44 is slidably connected to the guide shaft 51;

[0075] A drive motor 38 is horizontally mounted on one side of the outer shaft cylinder 31 , and an output end of the drive motor 38 is connected to the main shaft 37 .

[0076] In this embodiment, a tooth groove 47 is formed on the side wall of the main shaft 37, and a tooth ring ridge is formed on the inner wall of the sliding sleeve 44. The tooth ring ridge engages with the tooth groove 47, so that the main shaft 37 can push the sliding sleeve 44 to move back and forth axially at a high frequency during continuous rotation through the staggered engagement between the tooth ring ridge and the tooth groove 47.

[0077] A support spring is provided between the sliding sleeve 44 and the guide shaft 51, that is, the drive motor 38 can drive the main shaft 37 to rotate rapidly after receiving the control signal. At this time, the sliding sleeve 44 outside the main shaft 37 generates a high-frequency axial reciprocating displacement, so that the thimbles 41 can slide synchronously, so that the multiple pressure blocks 42 cooperate with the rubber pads 43 to realize multi-point braking of the wire rope, so as to achieve priority deceleration braking of the wire rope; and when the propulsion cylinder 36 drives the gate disc 25 to intervene in the braking operation, the drive motor 38 stops in time. At this time, the tooth peak contact is reached between the tooth ring convex edge and the tooth groove 47, and the support spring is in extreme compression, so that the thimbles 41 outside the sliding sleeve 44 achieve multi-point braking of the wire rope through the pressure block 42, thereby cooperating with the gate plate on the gate disc 25 to form a braking effect on the wire rope in two different directions.

[0078] The above is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An anti-falling automatic winch hoist, characterized in that: It includes: A thickened base (11) has two foot brackets (12) symmetrically fixed on its upper end surface, and a reel (1) is rotatably connected between the foot brackets (12); A steel wire rope is wound on the drum (1), a reducer is installed on the outside of one of the foot brackets (12) on the thickened base (11), and an output end of the reducer is connected to the drum (1); an electromagnetic brake fixed on the thickened base (11) and located outside the other foot bracket (12); A rope feeding frame (13) is vertically fixed on one side of the thickened base (11) and is located in the rope feeding direction of the drum (1); the upper end of the rope feeding frame (13) is rotatably connected to a rotating wheel (14), and the steel wire rope passes around the rotating wheel (14); A brake unit (2) is vertically slidably mounted on the rope feeding frame (13) and is located below the rotating wheel (14). The steel wire rope passes through the brake unit (2). The brake unit (2) applies an emergency brake to the steel wire rope when the steel wire rope breaks accidentally. The brake unit (2) comprises: A support frame (21) is slidably mounted on the rope feeding frame (13), and a wire drum (22) is horizontally fixed on the upper end of the support frame (21); A rope guide groove (23) is provided in the wire drum (22), and the steel wire rope is transmitted along the track of the rope guide groove (23); a rope feeding port and a rope outlet port are provided on the wire drum (22), and two ends of the rope guide groove (23) are respectively connected to the rope feeding port and the rope outlet port; A plurality of line wheel groups (24), each of the line wheel groups (24) is composed of two symmetrically arranged rollers, and the plurality of line wheel groups (24) are evenly arranged along the front half of the guide rope groove (23); A gate disc (25) is coaxially mounted in the wire drum (22), the gate disc (25) and the wire drum (22) being slidably connected, and a gate plate corresponding to the rope guide groove (23) is provided in the gate disc (25), the gate plate and the rear half of the rope guide groove (23) being slidably assembled along the axial direction of the wire drum (22); A propulsion mechanism (3) is fixed on a side of the support frame (21) close to the gate disc (25), and an output end of the propulsion mechanism (3) is connected to the gate disc (25); A control system is arranged outside the line disk (22), and the control system is electrically connected to the propulsion mechanism (3); A deceleration unit (4) is centrally arranged in the wire drum (22) and located in the rear half of the rope guide groove (23). The propulsion mechanism (3) is connected to the deceleration unit (4). The deceleration unit (4) mechanically decelerates the wire rope in the rope guide groove (23) before the gate disc (25).

2. The anti-falling automatic winch hoist according to claim 1, characterized in that: The distance between the brake unit (2) and the rotating wheel (14) during the upward and downward sliding adjustment of the support frame (21) is not less than 0.8 m.

3. The anti-falling automatic winch hoist according to claim 1, characterized in that: A speed measuring wheel (26) is further provided at the guide rope groove (23) in the wire drum (22). The speed measuring wheel (26) synchronously monitors the transmission speed of the wire rope in the guide rope groove (23) during the rotational motion. When the speed measuring wheel (26) detects an abnormality in the transmission speed of the wire rope, it feeds back an electrical signal to the control system, and the control system controls the propulsion mechanism (3) to perform a braking operation. An alarm is also provided outside the reel (1).

4. The anti-falling automatic winch hoist according to claim 1, characterized in that: The cross section of the rope guide groove (23) is in an S-shaped structure; and the cross section of the gate plate on the gate disc (25) is in a C-shaped structure.

5. The anti-falling automatic winch hoist according to claim 1, characterized in that: The deceleration unit (4) comprises: Slide grooves (46) are circumferentially distributed in the wire drum (22), and each slide groove (46) is slidably connected to a thimble (41); A pressure block (42) is slidably disposed in each of the slide grooves (46), one end of each of the pressure blocks (42) is fixed to the ejector pin (41), and a convex edge plate is fixed on the outer wall of the pressure block (42); A rubber pad (43) is attached to the inner wall of the rope guide groove (23); A sliding sleeve (44) is coaxially slidably connected in the wire drum (22), and a plurality of connecting rods (45) corresponding to the sliding grooves (46) are provided on the sliding sleeve (44), and one end of the connecting rod (45) is hinged to the ejector pin (41).

6. The anti-falling automatic winch hoist according to claim 5, characterized in that: The propulsion mechanism (3) comprises: An outer shaft cylinder (31) has a sleeve (32) coaxially fixed at one end thereof, a fixed shaft tube (33) is slidably connected to the sleeve (32), and one end of the fixed shaft tube (33) is connected to the gate disc (25); A fixed ring (34) is sleeved on the outside of the fixed shaft tube (33); a shifting rod (35) is connected to the outer shaft cylinder (31) so as to rotate symmetrically up and down; one end of the shifting rod (35) abuts against the fixed ring (34); The propulsion cylinder (36) is arranged corresponding to the shifting rod (35). One end of the propulsion cylinder (36) is rotatably connected to the outer shaft cylinder (31), and the other end is hinged to the shifting rod (35).

7. The anti-falling automatic winch hoist according to claim 6, characterized in that: A main shaft (37) is rotatably connected to the center of the outer shaft cylinder (31), and one end of the main shaft (37) extends into a sliding sleeve (44) in the reduction unit (4); A connecting pipe seat (5) is fixed on one side of the wire drum (22), a guide shaft (51) is fixed in the center of the connecting pipe seat (5), and one end of the sliding sleeve (44) is slidably connected to the guide shaft (51); A driving motor (38) is horizontally mounted on one side of the outer shaft cylinder (31), and an output end of the driving motor (38) is connected to the main shaft (37).

8. The anti-falling automatic winch hoist according to claim 7, characterized in that: A tooth groove (47) is provided on the side wall of the main shaft (37), and a tooth ring convex edge is provided on the inner wall of the sliding sleeve (44), and the tooth ring convex edge is in contact with the tooth groove (47), so that the main shaft (37) pushes the sliding sleeve (44) to move axially back and forth through the staggered engagement of the tooth ring convex edge and the tooth groove (47) during continuous rotation; A supporting spring is provided between the sliding sleeve (44) and the guide shaft (51).

Images