CN210176354U

CN210176354U - Power pulley

Info

Publication number: CN210176354U
Application number: CN201920976849.0U
Authority: CN
Inventors: Shaofeng Chen; 陈少锋
Original assignee: Jinjiang Jiewei Machinery Manufacturing Co ltd
Current assignee: Jinjiang Jiewei Machinery Manufacturing Co ltd
Priority date: 2019-06-26
Filing date: 2019-06-26
Publication date: 2020-03-24
Anticipated expiration: 2029-06-26

Abstract

The utility model relates to a power pulley, which comprises a pulley frame, a wheel body rotationally connected with the pulley frame and a power device fixed on the pulley frame; the power device drives the wheel body to rotate around the rotating axis of the wheel body by meshing with an internal gear arranged on the outer edge of the wheel body, and the lowering and recycling efficiency of the rope or the netting gear is improved.

Description

Power pulley

Technical Field

The utility model relates to a boats and ships deck equipment field especially relates to a power pulley.

Background

The pulley is a simple machine designed according to the lever principle, and consists of a disc with grooves on the periphery and a rope (or an adhesive tape, a steel cable, a chain and the like) crossing the disc, the mechanical efficiency is realized by the movement of the rope around a central shaft, the effect of saving labor or changing the direction of force is achieved, and the pulley is widely applied to machines such as cranes, windlasses, elevators and the like.

Chinese patent with publication number CN204907576U discloses a trawl hook pulley for ship, belonging to the technical field of ship. The utility model provides a marine trawl elastic hook pulley, includes pulley yoke, pulley spindle, oiling passageway, pulley, lock nut, opening gasket and axle sleeve, the bottom of pulley yoke is equipped with the opening, the pulley spindle is connected in the bottom of pulley yoke, the rotatable noose of pulley is outside the pulley spindle, the both ends of pulley spindle are located the opening inboard of pulley yoke and all are equipped with the step, every the step position embedding has an opening gasket, and two lock nuts screw respectively at the both ends of pulley spindle.

The defects of the prior art are that when the winch or the net hauler recovers the rope or the net, the rope or the net hauler needs to output overlarge traction force due to the fact that the rope or the net adsorbs a large amount of seawater and has overlarge quality, and the motor is overloaded and overheated; moreover, because the rope or the net is too heavy, the friction between the rope or the net and the pulley is increased, the recovery resistance is too large, the recovery speed is slow, and the recovery efficiency is low; the in-process of transferring rope or netting gear through the pulley, the department of transferring need be dragged by the manual work, because rope or netting gear are overweight, the friction of rope or netting gear and pulley is big, need to consume great manpower and just can accomplish the transfer of rope or netting gear and transfer the speed slower.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a power pulley improves the efficiency of transferring and retrieving of rope or netting gear.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a power pulley comprises a pulley frame, a wheel body rotationally connected with the pulley frame and a power device fixed on the pulley frame; the power device drives the wheel body to rotate around the rotation axis of the wheel body by being meshed with an internal gear arranged on the outer edge of the wheel body.

By adopting the technical scheme, the hydraulic motor drives the wheel body to rotate, the rope or the netting gear is driven to move relative to the wheel body through rolling friction between the wheel body and the rope or the netting gear, and the relative movement direction can be adjusted to the rotation direction of the winch or the net hauler, so that the traction force required by the original winch or the net hauler when the rope or the net hauler is recovered is reduced in a phase-changing manner, and the load of the motor is reduced; the rolling friction between the wheel body and the rope or the netting gear is changed from the opposite direction to the rotation direction of the motor of the winch or the net hauler to be the same, and the friction resistance is changed into friction assisting force, so that the recovery and transfer efficiency of the rope or the netting gear is improved; the gear internal meshing has small volume and large speed ratio, is suitable for being placed in a narrow cavity on the side surface of the pulley, and can realize low-speed and large-torque rotation of the pulley.

The utility model discloses further set up to: the wheel body comprises a rotating shaft and dish-shaped wheels fixed at two ends of the rotating shaft; the dish wheel is connected with the pulley frame through a bearing, and the inner gear is fixed on the outer edge of the inner side surface of the dish wheel; the circumferential surface of the rotating shaft is provided with a plurality of first convex edges extending along the axis of the rotating shaft in the length direction, and the side wall of the dish-shaped wheel close to the rotating shaft is provided with a plurality of second convex edges extending along the radial direction of the dish-shaped wheel in the length direction; two ends of the first convex rib respectively extend to the side wall of the dish-shaped wheel and are positioned between two adjacent second convex ribs.

By adopting the technical scheme, the wheel body is arranged into the combination of the rotating shaft and the disc-shaped wheel, so that unnecessary cores can be reduced when the whole wheel body is cast, and the die is convenient to lift and process; the first convex edge and the second convex edge which are respectively arranged on the rotating shaft and the disc-shaped wheel can increase the rolling friction between the rope or the netting gear and the wheel body, the direction of the rolling friction is the same as the rotating direction of a motor of the winch or the netting gear, and the rolling friction is changed into the assistance force in the recovery or transfer process, so that the traction force required by the winch or the netting gear when the rope or the netting gear is recovered originally is reduced, the load of the motor is reduced, and the recovery and transfer efficiency of the rope or the netting gear is improved; the damage of the rope or the netting gear caused by the fact that the rope or the netting gear is clamped at the connecting position of the rotating shaft and the disc-shaped wheel in the process of recovering and lowering can be avoided.

The utility model discloses further set up to: the pulley yoke comprises a hanging bracket externally connected with the crane, side plates hinged to two ends of the hanging bracket and a central rod fixedly connected between the side plates at the two ends and penetrating through the rotating shaft; wherein the axis of the central rod coincides with the axis of the rotating shaft.

By adopting the technical scheme, the rotating center of the wheel body can be kept unchanged when the wheel body rotates, and the rotating stability is improved; and the central rod enables the pulley body and the pulley yoke to be integrated, so that the stability of the pulley is further improved.

The utility model discloses further set up to: the rotating shaft is fixedly connected with the disc-shaped wheel through a positioning pin; the dish-shaped wheel is connected with the central rod through a pair of angular contact ball bearings, wherein the large end face of the outer ring of each angular contact ball bearing abuts against the end face of the positioning pin.

By adopting the technical scheme, the positioning pin limits the displacement of the rotating shaft and the disc wheel in the radial direction, and the large end surface of the outer ring of the angular contact ball bearing limits the displacement of the positioning pin in the axial direction, so that the positioning pin is prevented from being separated, and the displacement of the rotating shaft and the disc wheel in the axial direction is further limited; the locating pin and the angular contact ball bearing enable the dish-shaped wheel to be fixedly connected with the rotating shaft.

The utility model discloses further set up to: an annular groove is formed between the contact surfaces of the rotating shaft and the disc-shaped wheel, the annular groove is closed, and a sealing ring is arranged in the annular groove.

By adopting the technical scheme, in the recovery process of the rope or the netting gear, the electrochemical corrosion caused by seawater permeating into the connection part of the rotating shaft and the disc-shaped wheel and the inside of the pulley can be reduced, and the possibility of part breakage and scrapping is reduced; the sealing ring is arranged in the closed annular groove, so that direct sunlight can be avoided, the aging of the sealing ring is reduced, and the durability of the pulley is improved.

The utility model discloses further set up to: and a plurality of diversion trenches extending along the length direction of the first convex edge are formed in the side surface, far away from the rotating center of the rotating shaft, of the first convex edge.

By adopting the technical scheme, in the recovery process of the rope or the net, the seawater extruded by the rope or the net after being stretched flows into the diversion trench and cannot be retained on the surface of the first rib, so that the rope or the net is prevented from slipping; when seawater flows to the joint of the rotating shaft and the disc-shaped wheel along the diversion groove, the seawater moves along the surface of the disc-shaped wheel and is separated from the pulley due to the centrifugal force generated when the pulley rotates, so that the load can be reduced, and the corrosion of the seawater to the pulley can be reduced; meanwhile, the diversion trench is in contact with the rope or the net, so that the friction between the wheel body and the rope or the net is increased, and the recycling stability is improved.

The utility model discloses further set up to: the annular groove is provided with an annular opening which is directly communicated with the outside along the radial direction.

By adopting the technical scheme, in the process of recovering or lowering, the sealing ring blocks seawater entering from the opening, so that the electrochemical corrosion inside the pulley is reduced; due to the centrifugal force generated by the rotation of the pulley, seawater is thrown away from the opening, so that the corrosion of the seawater to a gap at the joint of the rotating shaft and the disc-shaped wheel is reduced; and because the sealing washer is located the ring channel, sunshine is difficult to shine the sealing washer, reduces the ageing of sealing washer.

The utility model discloses further set up to: the side wall of the annular groove is provided with an annular groove, and the peripheral side surface of the sealing ring is provided with a bulge embedded in the groove.

By adopting the technical scheme, most of seawater can be blocked outside the pulley by the embedding between the bulge and the groove of the sealing ring, and the probability that the seawater enters the inside of the pulley is reduced.

To sum up, the utility model discloses following beneficial effect has:

1. the hydraulic motor drives the wheel body to rotate, so that the rotation friction resistance of the original rope or net and the wheel body becomes traction force when the rope or net is recovered and transferred, and the recovery and transfer efficiency is improved;

2. the end parts of the first rib and the second rib are mutually meshed, so that the rope or the net is prevented from being clamped at the joint of the rotating shaft and the disc-shaped wheel and being damaged.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an internal structural view of the present invention;

fig. 3 is a partially enlarged schematic view at a in fig. 2.

In the figure, 1, a pulley yoke; 2. a wheel body; 3. a power plant; 11. a hanger; 12. a side plate; 13. a center pole; 14. angular contact ball bearings; 15. a spacer sleeve; 21. a rotating shaft; 22. a dish wheel; 211. an annular groove; 212. an opening; 213. a first rib; 214. a diversion trench; 215. a seal ring; 216. a groove; 217. a protrusion; 218. positioning pins; 222. a rib II; 31. a gear; 32. an internal gear.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

A power pulley, as shown in figure 1, comprises a pulley frame 1 externally connected with a crane, a wheel body 2 rotatably connected with the pulley frame 1 and a power device 3 fixed on the pulley frame 1; the wheel body 2 comprises a rotating shaft 21 and disc-shaped wheels 22 fixed at two ends of the rotating shaft 21, and the disc-shaped wheels 22 are connected with the pulley frame 1 through bearings; wherein the power device 3 drives the disc wheel 22 to rotate around the rotation axis of the rotation shaft 21, so that the rotation friction resistance between the original rope or net and the wheel body 2 becomes the traction force when the rope or net is recovered and released, the power device 3 can be an electric motor or a hydraulic motor, and the hydraulic motor is preferred here.

As shown in fig. 2, the sheave frame 1 includes a crane 11 externally connected to the crane, side plates 12 hingedly connected to both ends of the crane 11, and a center rod 13 fixedly connected between the two side plates 12; the hydraulic motor is fixed on the side wall of the side plate 12 at one end, and the axis of the output shaft of the hydraulic motor is parallel to the axis of the central rod 13; wherein the central rod 13 is arranged through the rotating shaft 21 and is connected with the disk wheel 21 through a pair of sealed and waterproof angular contact ball bearings 14; the two angular contact ball bearings 14 are arranged back to back, and the large end surfaces of the inner rings of the two angular contact ball bearings are abutted against the side walls of the side plates 12 through spacer bushes 15; wherein the inner side edge of the disc wheel 22 is provided with an internal gear 32 facing the axis of the center rod 13, and the internal gear 32 is engaged with a gear 31 fixed to the output shaft of the hydraulic motor. The hydraulic motor drives the wheel body 2 to rotate around the axis of the central rod 13 through gear engagement.

As shown in fig. 3, the rotating shaft 21 and the disc wheel 22 are fixedly connected by a positioning pin 218 inserted in the axial direction, and an end surface of the positioning pin 218 abuts against a large end surface of an outer ring of the angular ball bearing 14; an annular groove 211 is formed in the side wall of the connecting position of the rotating shaft 21 and the disc wheel 22, an annular groove 216 is formed in the side wall of the annular groove 211 along the axial direction, an annular sealing ring 215 is arranged in the annular groove 211, and a protrusion 217 embedded in the groove 216 is arranged on the peripheral side surface of the sealing ring 215; the annular groove 211 is provided with an annular opening 212 that leads radially outward.

As shown in fig. 1, a plurality of first ribs 213 extending in the length direction along the axis of the rotating shaft 21 are arranged on the circumferential surface of the rotating shaft 21, and a plurality of second ribs 222 extending in the length direction along the radial direction of the disc wheel 22 are arranged on the end surface of the disc wheel 22 close to the rotating shaft 21; a plurality of guide grooves 214 extending along the length direction of the first rib 213 are formed in the side surface of the first rib 213 away from the rotation center of the rotation shaft 21; two ends of the first rib 213 extend to the side wall of the dish wheel 22 and are located between the two adjacent ribs 213.

Working mode (refer to fig. 1, 2 and 3)

A rope or net spans the wheel body 2, one end of the rope or net is positioned in the sea water, and the other end is tied on a winding drum of a winch or a net hauler on the deck.

Recovery of rope or netting gear:

and simultaneously starting the pulley and the winch or the net hauler, wherein the hydraulic motor is meshed with the driving disc wheel 22 through the gear 31 so as to drive the wheel body 2 to rotate around the central rod 13, the rolling friction between the wheel body 2 and the rope or the net tool drives the rope or the net tool to move relative to the wheel body 2, the relative moving direction is the same as the rotating direction of the winch or the net hauler, and the rolling friction and the traction force of the winch or the net hauler on the rope or the net tool simultaneously act on the rope or the net tool to complete the recovery of the rope or the net tool.

Lowering of the rope or the net:

the pulley and the winch or the net hauler rotate reversely at the same time, at the moment, the winch or the net hauler conveys the rope or the net to the pulley, and the rolling friction between the wheel body 2 and the rope or the net is the traction force for driving the rope or the net to be lowered, so that the lowering of the rope or the net is completed.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent laws within the scope of the present invention.

Claims

1. The utility model provides a power pulley, includes pulley yoke (1), rotates and connects in pulley yoke's (1) wheel body (2), characterized by: the power device (3) is fixed on the pulley yoke (1); the power device (3) is meshed with an internal gear (32) arranged on the outer edge of the wheel body (2) to drive the wheel body (2) to rotate around the rotating axis of the wheel body (2).

2. The power pulley as claimed in claim 1, wherein: the wheel body (2) comprises a rotating shaft (21) and disc-shaped wheels (22) fixed at two ends of the rotating shaft (21); the disc wheel (22) is connected with the pulley frame (1) through a bearing, and the internal gear (32) is fixed on the outer edge of the inner side surface of the disc wheel (22); the peripheral surface of the rotating shaft (21) is provided with a plurality of first ribs (213) which extend along the axis of the rotating shaft (21) in the length direction, and the side wall of the dish-shaped wheel (22) close to the rotating shaft (21) is provided with a plurality of second ribs (222) which extend along the radial direction of the dish-shaped wheel (22) in the length direction; two ends of the first rib (213) respectively extend to the side wall of the dish-shaped wheel (22) and are positioned between two adjacent second ribs (222).

3. The power pulley as claimed in claim 2, wherein: the pulley yoke (1) comprises a hanging bracket (11) externally connected with the crane, side plates (12) hinged to two ends of the hanging bracket (11) and a central rod (13) fixedly connected between the side plates (12) at the two ends and penetrating through the rotating shaft (21); wherein the axis of the central rod (13) coincides with the axis of the rotating shaft (21).

4. The power pulley as claimed in claim 2, wherein: the rotating shaft (21) is fixedly connected with the disc-shaped wheel (22) through a positioning pin (218); the disc wheel (22) is connected with the central rod (13) through a pair of angular contact ball bearings (14), wherein the large end face of the outer ring of the angular contact ball bearing (14) abuts against the end face of the positioning pin (218).

5. The power pulley as claimed in claim 2, wherein: an annular groove (211) is formed between the contact surfaces of the rotating shaft (21) and the disc-shaped wheel (22), the annular groove (211) is closed, and a sealing ring (215) is arranged in the annular groove (211).

6. The power pulley as claimed in claim 2, wherein: the side surface of the first rib (213) far away from the rotating center of the rotating shaft (21) is provided with a plurality of flow guide grooves (214) extending along the length direction of the first rib (213).

7. The power pulley as claimed in claim 5, wherein: the annular groove (211) is provided with an annular opening (212) which is directly communicated with the outside along the radial direction.

8. The power pulley as claimed in claim 7, wherein: the side wall of the annular groove (211) is provided with an annular groove (216), and the peripheral side surface of the sealing ring (215) is provided with a bulge (217) embedded in the groove (216).