CN111703972A

CN111703972A - Boats and ships shore connection cable prevents lax device

Info

Publication number: CN111703972A
Application number: CN202010716721.8A
Authority: CN
Inventors: 戴群; 赵俊; 高益多
Original assignee: CSSC Marine Power Co Ltd
Current assignee: CSSC Marine Power Co Ltd
Priority date: 2020-07-23
Filing date: 2020-07-23
Publication date: 2020-09-25

Abstract

The invention discloses a ship shore power cable looseness-prevention device which comprises a base plate, a rubber roller component, a swing frame, a spring, a signaling mechanism and hinge seats and limiting mechanisms which are arranged in pairs, wherein the base plate is vertically fixed on an electric web plate, one end of an L-shaped plate of the swing frame is hinged with two ends of the rubber roller component, and the other end of the L-shaped plate is hinged with one end of the hinge seat which is arranged horizontally. One side of the cable abuts against the rubber roller component. Two ends of the spring are respectively abutted against the center of the transverse plate and the center of the lower part of the base plate, and the limiting mechanisms are respectively arranged on the middle parts of the vertical edges of the L-shaped plates. The signal sending mechanism is arranged at the lower part of the L-shaped plate and the lower part of the vertical plate at one side of the base plate. The cable released by the cable drum is firstly vertically and downwards abutted against the rubber drum assembly, and then passes through the lower side of the fixed pulley supported on the bottom plate and then is led to the shore. The cable drum is simple in structure and convenient to maintain, avoids the phenomenon of cable disorder or winding on the cable drum caused by excessive looseness of the cable, and improves the operation reliability of the cable drum.

Description

Boats and ships shore connection cable prevents lax device

Technical Field

The invention relates to an electric connection device between a ship and an onshore power supply facility when the ship stops at a wharf, in particular to an anti-loosening device for a cable connected with the onshore power supply facility when the ship stops at the wharf, and belongs to the technical field of ship supporting facilities.

Background

With the continuous enhancement of the environmental protection consciousness of the whole society, relevant regulations for limiting the pollutant discharge of the marine diesel engine by the international organization are increasingly strict. When the ship stops at the wharf, in order to reduce the emission of waste gas, the power supply of the ship is changed from a diesel generator set of the ship to an onshore power supply facility for supplying power. The ship is connected with the shore power supply facility through a cable, the cable is generally wound and unwound through a cable winding drum, and the relative moving speeds of two ends of the ship shore are not easy to synchronize in the cable releasing process due to the fact that the distance between the ship shore is relatively long; meanwhile, due to the action of waves, the distance between the ship banks can fluctuate in a small range, so that the cable is too loose, the cable on the cable drum is prone to being disorderly or wound, the cable drum is influenced to rotate to take up and pay off the cable, and the cable drum cannot rotate in severe cases.

Disclosure of Invention

The invention aims to provide a ship shore power cable looseness prevention device, which can prevent the occurrence of a fault that a cable drum cannot work normally due to the fact that a cable is too loose.

The invention is realized by the following technical scheme:

a ship shore power cable looseness-prevention device comprises a substrate, a rubber roller assembly, a swing frame, a spring, a signaling mechanism, hinge seats and limiting mechanisms, wherein the hinge seats and the limiting mechanisms are arranged in pairs; one side of the cable is abutted against the rubber roller assembly, and two ends of the spring are abutted against the center of the transverse plate and the center of the lower part of the base plate through corresponding spring supporting pieces respectively; the limiting mechanisms are respectively arranged on the middle parts of the vertical edges of the L-shaped plates; the signaling mechanism is arranged at the lower part of the L-shaped plate and the lower part of the vertical plate at one side of the substrate; the cable released by the cable drum is firstly vertically and downwards abutted against the rubber drum assembly, and then passes through the lower side of the fixed pulley supported on the bottom plate and then is led to the shore.

The object of the invention is further achieved by the following technical measures.

Further, the rubber roller assembly comprises a rubber roller, a supporting shaft and 2 bearings, the two ends of the rubber roller are supported on the middle of the supporting shaft through the bearings respectively, the ends of the two ends of the supporting shaft are fixed on the ends of the transverse edges of the L-shaped plates respectively, and one side of the rubber roller abuts against the cable.

Furthermore, the spring support piece comprises a spring core column and a spring sleeve, one end of the spring is supported on the spring core column, the other end of the spring is supported in the spring sleeve, the bottom of the spring core column is fixed on the center of the lower portion of the base plate, and the bottom of the spring sleeve is fixed on the center of the transverse plate.

Furthermore, the signaling mechanism comprises an induction plate, a first proximity switch and a second proximity switch, one end of the induction plate is fixed on the outer side of the end head of the transverse edge of one L-shaped plate and is perpendicular to the transverse edge of the L-shaped plate, and the other end of the induction plate corresponds to the positions of the first proximity switch and the second proximity switch respectively; the first proximity switch and the second proximity switch are fixed at one end of the vertical plate at intervals, and the other end of the vertical plate is fixed on the lower part of one side of the base plate and is positioned outside the L-shaped plate.

Furthermore, stop gear includes spacing seat and stop screw, spacing seat is the U-shaped, the open end of U-shaped strides respectively on the perpendicular limit middle part that corresponds L shaped plate, open end bottom vertical fixation is respectively on base plate both sides middle part, stop screw twists on the U-shaped bottom, and adjacent with the perpendicular limit of L shaped plate.

The invention has simple structure, low manufacturing cost and convenient maintenance, and utilizes the elastic force of the spring reset to push the swing frame to rotate anticlockwise around the hinging center of the hinging seat, so that the rubber roller between the ends of the two L-shaped plates always supports against the cable, the cable is kept in a tensioning state, and the operation reliability of the cable drum is improved. The two proximity switches of the signaling mechanism respectively correspond to two angles of the induction plate, so that the corresponding proximity switches respectively signal to instruct the cable drum to stop rotating or reverse according to different degrees of cable tensioning, and the cable is ensured to be kept in a tensioning state.

Advantages and features of the present invention will be illustrated and explained by the following non-restrictive description of preferred embodiments thereof, given by way of example only with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic view of the construction of the present invention with the cable under tension;

FIG. 2 is a left side view of FIG. 1;

FIG. 3 is a schematic view of cable tensioning by stalling the cable drum by the present invention;

FIG. 4 is a schematic view of the tensioning of a cable by reversing the cable drum of the present invention.

Detailed Description

The invention is further illustrated by the following figures and examples.

As shown in fig. 1 to 4, the present invention includes a substrate 1, a rubber roller assembly 2, a swing frame 3, a spring 4, a signaling mechanism 5, and a pair of hinge seats 6 and a limiting mechanism 7, wherein two ends of a cable drum 10 are respectively supported on corresponding cable drum supporting seats 30 through bearing seats 20, the two cable drum supporting seats 30 are fixedly welded together through a web 301, and the substrate 1 is vertically fixed on the web 301 at the lower part of the cable drum supporting seat 20.

The swing frame 3 is a welded structure member, and comprises a transverse plate 31 and two L-shaped plates 32, the two ends of the transverse plate 31 are respectively welded and fixed at the inner sides of the corners of the corresponding L-shaped plates 32, and the ends of the transverse edges 321 of the L-shaped plates 32 are respectively hinged with the two ends of the rubber roller assembly 2. The end of the vertical edge 322 of the L-shaped plate 32 is hinged to the left end of the hinge seat 6 horizontally arranged, and the right end of the hinge seat 6 is welded and fixed to two corners of the upper portion of the base plate 1. One side of the cable 40 is abutted against the rubber roller assembly 2, and two ends of the spring 4 are abutted against the center of the transverse plate 31 and the center of the lower part of the base plate 1 through corresponding spring supporting pieces 41 respectively.

The rubber roller component 2 comprises a rubber roller 21, a supporting

shaft

22 and 2 bearings 23, the rubber roller 21 is of a structure that a layer of rubber is coated on the outer peripheral surface of a steel cylinder, two ends of the rubber roller 21 are supported in the middle of the supporting shaft 22 through the bearings 23 respectively, ends of two ends of the supporting shaft 22 are fixed on ends of transverse edges 322 of the L-shaped plates 32 respectively, and one side of the rubber roller 21 abuts against the cable 40. In the process of winding and unwinding the cable 40, the rubber roller 21 is kept in a rolling state, and the outer surface of the cable 40 keeps sliding friction with the surface of the rubber roller 21, so that the abrasion of the surface of the cable 40 can be reduced, and the cable 40 is ensured to be in a tensioning state.

The spring support 41 includes a spring stem 411 and a spring sleeve 412, the right end of the spring 4 is supported on the spring stem 411, the left end is supported in the spring sleeve 412, the bottom of the spring stem 411 is welded and fixed on the lower center of the base plate 1, and the bottom of the spring sleeve 412 is welded and fixed on the center of the cross plate 31. The spring 4 keeps the cable 40 pressed against the rubber roller 21 in a tensioned state, so that the phenomenon of cable disorder or winding on the cable reel 10 caused by excessive looseness of the cable 40 is avoided.

The signaling mechanism 5 is arranged at the lower part of one L-shaped plate 32 at the left side in fig. 2 and the lower part of the vertical plate 11 at the left side of the base plate 1, and comprises an induction plate 51, a first proximity switch 52 and a second proximity switch 53, the upper end of the induction plate 51 is welded and fixed at the outer side of the end of the transverse edge 321 of the L-shaped plate 32 at the left side in fig. 2 and is perpendicular to the transverse edge 321 of the L-shaped plate 32, and the lower end of the induction plate 51 corresponds to the positions of the first proximity switch 52 and the second proximity switch 53 respectively. The first proximity switch 52 and the second proximity switch 53 are fixed on the right end of the vertical plate 11 at a right-left interval, and the left end of the vertical plate 11 is welded and fixed on the lower part of the left side of the base plate 1 and is located on the outer side of the L-shaped plate 32 on the left side.

The limiting mechanism 7 comprises a limiting seat 71 and a limiting screw 72, the limiting seat 71 is U-shaped, the open ends of the U-shape respectively straddle the middle parts of the vertical edges 322 of the corresponding L-shaped plates 32, the bottoms of the open ends are respectively and vertically welded and fixed on the middle parts of two sides of the base plate 1, the limiting screw 72 is screwed on the bottom of the U-shape and is adjacent to the vertical edges 322 of the L-shaped plates 32, and the limiting screw 72 is locked by a nut 73. The limit seat 71 limits the swing angle of the swing frame 3, and the swing frame 3 is prevented from swinging too much and being out of control. The cable 40 released by the cable drum 10 in fig. 3 first rests vertically downwards on the rubber roller 21 and then passes under a fixed pulley 60 supported on the base plate 50 and then leads to the shore.

When the cable 40 is under tension, as shown in figure 1, the spring 6 is compressed, the swing frame 3 is in a vertical position, the sensing plate 5 is at a distance from the first proximity switch 52, and the first proximity switch 52 is not activated. When the cable 40 normally moves, the cable 40 rotates the rubber roller 21, and the swing frame 3 is pressed by the cable 40 in an initial state. When the cable 40 at the shore end moves too slowly and the cable unwinding speed of the cable drum 10 cannot be changed, the cable 40 is in a loose state, the stress on the rubber roller 3 in contact with the cable 40 is reduced, the spring 6 is reset and extends to be ejected out of the swing frame 3, so that the rubber roller 3 is always in contact with the cable 40, and the cable 40 is kept tensioned. When the cable 40 starts to loosen, the swinging frame 3 rotates counterclockwise under the driving of the return elastic force of the spring 4, and drives the sensing plate 5 to swing to the position of the first proximity switch 52, at this time, the first proximity switch 52 sends out a signal that the cable drum 10 stops rotating, and the cable 40 stops releasing and is pushed by the rubber roller 3 to be kept in a tensioned state.

In the normal working process of shore power, because the ship is influenced by waves to generate displacement, when the cable 40 is loosened again, as shown in fig. 4, at this time, the swing frame 3 continues to rotate counterclockwise under the driving of the return elastic force of the spring 4, the cable 40 starts to be tensioned but still looses, when the sensing plate 5 swings to the position of the second proximity switch 53, the second proximity switch 53 sends a reversal signal of the cable drum 10 at this time, the cable drum 10 reverses until the cable 40 is tensioned, the load sensor on the cable drum 10 sends a rotation stop signal of the cable drum 10, and the cable drum 10 stops rotating. Under the action of the first proximity switch 52, the second proximity switch 53 and the load sensor, the cable reel 10 is in a floating equilibrium state of reverse rotation and stall, ensuring that the cable 40 remains tensioned.

In addition to the above embodiments, the present invention may have other embodiments. All the technical solutions adopting equivalent substitution or equivalent transformation are within the protection scope of the present invention.

Claims

1. A ship shore power cable looseness-prevention device is characterized by comprising a base plate, a rubber roller assembly, a swing frame, a spring, a signaling mechanism, a hinge seat and a limiting mechanism which are arranged in pairs, wherein the base plate is vertically fixed on a web plate at the lower part of a cable roller supporting seat, the swing frame comprises a transverse plate and two L-shaped plates, two ends of the transverse plate are respectively fixed on the inner sides of corners of the corresponding L-shaped plates, the ends of the transverse edges of the L-shaped plates are respectively hinged with two ends of the rubber roller assembly, the ends of the vertical edges of the L-shaped plates are respectively hinged with one end of the hinge seat which is arranged horizontally, and the other end of the hinge seat is respectively fixed; two ends of the spring are respectively propped against the center of the transverse plate and the center of the lower part of the base plate through corresponding spring supporting pieces; the limiting mechanisms are respectively arranged on the middle parts of the vertical edges of the L-shaped plates; the signaling mechanism is arranged at the lower part of the L-shaped plate and the lower part of the vertical plate at one side of the substrate; the cable released by the cable drum is firstly vertically and downwards abutted against the rubber drum assembly, and then passes through the lower side of the fixed pulley supported on the bottom plate and then is led to the shore.

2. The marine shore power cable slack-preventing device according to claim 1, wherein the rubber roller assembly comprises a rubber roller, a support shaft and 2 bearings, two ends of the rubber roller are respectively supported on the middle part of the support shaft through the bearings, two end heads of the support shaft are respectively fixed on the transverse end heads of the L-shaped plate, and one side of the rubber roller abuts against the cable.

3. The marine shore power cable slack-preventing device of claim 1, wherein said spring support member comprises a spring core and a spring sleeve, one end of said spring is supported on said spring core, the other end of said spring is supported in said spring sleeve, the bottom of said spring core is fixed on the center of the lower portion of said base plate, and the bottom of said spring sleeve is fixed on the center of said cross plate.

4. The marine shore power cable slack-preventing device of claim 1, wherein the signaling mechanism comprises an induction plate, a first proximity switch and a second proximity switch, one end of the induction plate is fixed outside the end of the transverse edge of one L-shaped plate and is perpendicular to the transverse edge of the L-shaped plate, and the other end of the induction plate corresponds to the positions of the first proximity switch and the second proximity switch respectively; the first proximity switch and the second proximity switch are fixed at one end of the vertical plate at intervals, and the other end of the vertical plate is fixed on the lower part of one side of the base plate and is positioned outside the L-shaped plate.

5. The marine shore power cable slack-preventing device of claim 1, wherein the limiting mechanism comprises a limiting seat and a limiting screw, the limiting seat is U-shaped, the open ends of the U-shape respectively straddle the middle portions of the vertical edges of the corresponding L-shaped plates, the bottoms of the open ends are respectively vertically fixed on the middle portions of both sides of the base plate, and the limiting screw is screwed on the bottom of the U-shape and is adjacent to the vertical edge of the L-shaped plate.