CN218142009U

CN218142009U - Manual bolt anti-falling device of boarding ladder

Info

Publication number: CN218142009U
Application number: CN202221653675.2U
Authority: CN
Inventors: 冯是公; 黄涛; 尹小龙; 权小军
Original assignee: Jiangsu Changlong Petrochemical Equipment Co ltd
Current assignee: Jiangsu Changlong Petrochemical Equipment Co ltd
Priority date: 2022-06-29
Filing date: 2022-06-29
Publication date: 2022-12-27
Anticipated expiration: 2032-06-29

Abstract

The utility model belongs to the technical field of the safety protection technique of the boarding ladder and specifically relates to a manual bolt anti-falling device of boarding ladder, including lift platform right side board, right track, lift platform left side board, left track, first manual bolt mechanism, the manual bolt mechanism of second, first safety hook, second safety hook and PLC control system matched with travel switch sensor. The manual bolt anti-falling device of the boarding ladder can solve the threat problem caused by the fact that the boarding ladder lifting platform falls to the bottom layer to the personnel safety after the steel wire rope of the boarding ladder is broken; the safety interlocking of the manual bolt and the lifting of the platform can be realized; by matching with the travel switch sensor, the boarding logic of personnel can be controlled by matching with a PLC control system; the whole device is simple in structure and strong in rigidity, and cannot be damaged due to long-time use.

Description

Manual bolt anti-falling device of boarding ladder

Technical Field

The utility model belongs to the technical field of the safety protection technique of the boarding ladder and specifically relates to a manual bolt anti-falling device of boarding ladder.

Background

In the development process of a tanker dock, the dock face of a modern large tanker dock, particularly a non-covered pier dock, is not completely continuous, the elevation is high, the ship jolts and moves frequently in the operation process, and the amplitude is large. Due to the large fender of the wharf, the distance from the ship board parked on the wharf to the wharf shoreline is large. The ship-shore connection under the condition is difficult to solve by the gangway carried by the oil tanker. Therefore, in order to accelerate the loading and unloading operations of ships and ensure the safety of personnel getting on and off the ships, the modern large oil tanker terminal is a necessary choice to replace the ship gangway with the boarding ladder. The boarding ladder is almost similar to an oil transfer arm and becomes an indispensable large-scale operation device for an oil tanker wharf.

The boarding ladder is characterized in that a steel wire rope is pulled through a hydraulic winch (or an electric winch), and the steel wire rope pulls a lifting platform, so that the platform is lifted. In the use process, the steel wire rope also has a fracture risk due to friction, fatigue, impact and the like, and when the steel wire rope is fractured, the lifting platform can fall to one layer from a high place to safely generate risks for wharf personnel.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: in order to solve the problems existing in the prior art, the improved manual bolt anti-falling device of the boarding ladder is provided, and the problem that when a steel wire rope is broken due to friction, fatigue, impact and the like, a lifting platform falls to one layer from a high position to cause risks to wharf personnel is solved.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a manual bolt anti-falling device of boarding ladder, includes lift platform right side board, right track, lift platform left side board, left track, first manual bolt mechanism, the manual bolt mechanism of second, first safety hook, second safety hook and PLC control system matched with travel switch sensor, first manual bolt mechanism and the manual bolt mechanism of second constitute by handle, backing pin axle, safety pin, clamping ring, compression spring, base, travel switch tablet, tablet pivot and the tablet baffle of fixing on right track, left track, travel switch sensor fix respectively in right track, left track outside, the base on the first manual bolt mechanism passes through clamping ring bolt fixed mounting on left track, the manual bolt mechanism on the base pass through clamping ring bolt fixed mounting on right track, the safety pin pass through compression spring elasticity assembly between clamping ring and base, the backing pin axle run through and fix inside the handle, the tablet that runs through inside transversely at left track and right track outside.

The safety pin outside top seted up both ends open-ended top pilot hole, the handle link through running through top pilot hole and safety pin activity assembly.

The clamping ring lateral surface on the symmetry seted up with the spacing draw-in groove of the L type structure side direction of backing pin axle complex, the safety pin insert the spacing draw-in groove of side direction through the backing pin axle inside fixed with the clamping ring joint.

The lateral limiting seat of the annular integrated structure matched with the compression spring is arranged on the arc-shaped surface of the outer side of the safety pin.

The base is internally provided with a necking ring with an integral structure at the opening position on the right side.

The travel switch sensor is movably connected with the upper surface of the travel switch induction plate through a linkage mechanism with a guide roller at the top end.

The beneficial effects of the utility model are that:

(1) The manual bolt anti-falling device of the boarding ladder can solve the threat problem caused by the fact that a boarding ladder lifting platform falls to the bottom layer to the safety of personnel after a steel wire rope of the boarding ladder is broken;

(2) The safety interlocking of the manual bolt and the lifting of the platform can be realized;

(3) By matching with the travel switch sensor, the boarding logic of personnel can be controlled by matching with a PLC control system;

(4) The whole device is simple in structure and strong in rigidity, and cannot be damaged due to long-time use.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a front view of the assembly of the present invention.

Fig. 3 is a cross-sectional view of the present invention.

Fig. 4 is a schematic view of the assembly of the present invention.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic drawings, which illustrate the basic structure of the present invention in a schematic manner, and thus show only the components related to the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The manual bolt anti-falling device of the boarding ladder shown in fig. 1, fig. 2, fig. 3 and fig. 4 comprises a lifting platform right side plate 11, a right rail 12, a lifting platform left side plate 13, a left rail 14, a first manual bolt mechanism 15, a second manual bolt mechanism 16, a first safety hook 17 and a travel switch sensor 10 matched with a PLC control system, wherein the first manual bolt mechanism 15 and the second manual bolt mechanism 16 are respectively composed of a handle 1, a stop pin shaft 2, a safety pin 3, a press ring 4, a compression spring 5, a base 6, a travel switch induction plate 7, an induction plate rotating shaft 8, an induction plate baffle 9 fixed on the right rail 12 and the left rail 14, the travel switch sensor 10 is respectively fixed on the outer sides of the right rail 12 and the left rail 14, the base 6 on the first manual bolt mechanism 15 is fixedly installed on the left rail through a bolt 4, the base 6 on the second manual bolt mechanism 16 is fixedly installed on the press ring 12 through a bolt 4, the safety pin 3 is elastically assembled between the guide pin shaft 4 and the base 6, the guide plate 2 penetrates through the inner side of the handle 1 and the guide plate 8 and is assembled on the outer side of the left rail 14.

For cooperation movable assembly and control, both ends open-ended top pilot hole has been seted up on 3 outside tops of safety pin, and 1 link of handle is through running through top pilot hole and 3 movable assembly of safety pin.

In order to match with rotation limiting, the outer side surface of the pressing ring 4 is symmetrically provided with L-shaped structure lateral limiting clamping grooves 19 matched with the stop pin shaft 2, and the safety pin 3 is inserted into the lateral limiting clamping grooves 19 through the stop pin shaft 2 and is clamped and fixed with the pressing ring 4.

In order to cooperate with the compression spring 5 for extrusion control, the outer arc-shaped surface of the safety pin 3 is provided with an annular integrated structure lateral limiting seat 20 which cooperates with the compression spring 5.

In order to improve the limiting capability of the inner opening, the base 6 is internally provided with a reducing ring 21 of an integral structure at the position of the right opening.

For the lifting linkage control, the travel switch sensor 10 is movably connected with the upper surface of the travel switch sensing plate 7 through a linkage mechanism 23 with a guide roller 22 at the top end.

After the boarding ladder is lifted to one floor every time, dock personnel manually rotate and push out the safety pin 3, and safety is guaranteed. When it is desired to raise or lower the floor, the safety pin 3 is pulled back by manual rotation, and then the sensor receives a signal that the safety pin 3 has been pulled back. And all the doors on the boarding floor are closed at the moment, and the sensor receives a signal that the landing doors are closed. The hydraulic winch (or the electric winch) can be opened to roll the steel wire rope, so that the platform and the gangway ladder can be lifted to a working floor for boarding. The specific operation flow is as follows:

1. the safety pin 3 is pushed out by rotating the push handle 1.

2. The handle 1 is pushed by rotation and the shear pin 3 is pulled back.

3. The safety pin 3 is linked with the travel switch sensor 10 and triggered, and the PLC receives a signal;

4. closing the landing door;

5. the landing door travel switch is triggered, and the PLC receives a signal;

6. the boarding floor is manually set, and the set floor is automatically lifted.

When the first manual bolt mechanism 15 or the second manual bolt mechanism 16 is rotationally pushed out, the travel switch sensor 10 is in a non-triggering state, a hydraulic winch (or an electric winch) is interlocked, and the platform can be lifted to a working floor; after the first manual bolt mechanism 15 or the second manual bolt mechanism 16 is inserted in a rotating mode, the travel switch sensor 10 is in a triggering state, the hydraulic winch (or the electric winch) is interlocked, the platform cannot lift, and wharf personnel can pass through the platform and the gangway to the tanker of the tanker ship. First safety hook 17 of welded on the boarding ladder pylon catches first manual bolt mechanism 15 on the lift platform, and second safety hook 18 catches second manual bolt mechanism 16 on the lift platform, when wire rope fracture, can prevent that lift platform from falling to the one deck by the eminence, to the risk that sign indicating number personnel safety produced.

The press ring 4 is provided with an annular groove, and the stop pin shaft 2 can be ejected out under the action of the spring force of the compression spring 5 after rotating for a certain angle;

the sensor plate shaft 8 is arranged on the left side (off-center) of the travel switch sensor plate 7. Due to the effect of gravity, the right side of the travel switch sensor plate 7 rests on the sensor plate stop 9 in the retracted state of the securing pin 3, and the travel switch sensor 10 is also in the no-signal state.

The travel switch sensor plate 7 is provided with a specially shaped guide rail which is fitted to the latch shaft 2 and the outer arm of the travel switch sensor 10.

The press ring 4 and the base 6 are connected by bolts or other detachable connections.

The safety pin 3 is provided with a limiting step (matched with the press ring 4) to prevent the safety pin 3 from being pulled out.

The base 6 is fixed on the side plate of the lifting platform by welding or other methods.

The manual bolt anti-falling device of the boarding ladder can solve the threat problem caused by the fact that the boarding ladder lifting platform falls to the bottom layer to the personnel safety after the steel wire rope of the boarding ladder is broken; the safety interlocking of the manual bolt mechanism and the lifting of the platform can be realized; by matching with the travel switch sensor 10, the boarding logic of personnel can be controlled by matching with a PLC control system; the whole device is simple in structure and strong in rigidity, and cannot be damaged due to long-time use.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a manual bolt anti-falling device of boarding ladder, includes lift platform right side board (12), right track (11), lift platform left side board (14), left track (13), first manual bolt mechanism (15), the manual bolt mechanism of second (16), first safety hook (17), second safety hook (18) and PLC control system matched with travel switch sensor (10), characterized by: first manual bolt mechanism (15) and second manual bolt mechanism (16) constitute by handle (1), backing pin axle (2), safety pin (3), clamping ring (4), compression spring (5), base (6), travel switch tablet (7), tablet pivot (8) and tablet baffle (9) of fixing on right track (11), left track (13), travel switch sensor (10) fix respectively in right track (11), left track (13) outside, base (6) on first manual bolt mechanism (15) pass through clamping ring (4) bolt fixed mounting on left track (13), manual bolt mechanism (16) on base (6) pass through clamping ring (4) bolt fixed mounting on right track (11), safety pin (3) pass through compression spring (5) elasticity assembly between clamping ring (4) and base (6), backing pin axle (2) run through and fix inside handle (1), travel switch tablet sensor (7) pass through the inside movable assembly track (7) of pivot (7) and travel switch sensor (23) and upper mounting guide plate (23) outside pass through travel switch sensor (7) and travel switch mechanism (11) top guide plate (7) have through travel switch sensor (11) top and travel switch sensor (7) and travel switch mechanism (11) and travel switch sensor (7) outside pass through movable mounting on left track (11) and travel switch sensor (13) and travel switch mechanism (10) and have The safety pin (3) is linked with the travel switch sensor (10), and the stop pin shaft (2) and the outer arm of the travel switch sensor (10) are mutually matched.

2. The manual bolt fall prevention device for a boarding ladder of claim 1, characterized in that: safety pin (3) outside top seted up both ends open-ended top pilot hole, handle (1) link through running through top pilot hole and safety pin (3) activity assembly.

3. The manual pin fall prevention device for a boarding ladder of claim 1, characterized in that: clamping ring (4) lateral surface on the symmetry seted up with stop pin axle (2) matched with L type structure side direction spacing draw-in groove (19), safety pin (3) insert side direction spacing draw-in groove (19) through stop pin axle (2) inside fixed with clamping ring (4) joint.

4. The manual pin fall prevention device for a boarding ladder of claim 1, characterized in that: the lateral limiting seat (20) of the annular integrated structure is arranged on the arc-shaped surface of the outer side of the safety pin (3) and matched with the compression spring (5).

5. The manual bolt fall prevention device for a boarding ladder of claim 1, characterized in that: the base (6) is internally provided with a necking ring (21) with an integral structure at the right side opening position.