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CN-224225252-U - Dock boarding ladder convenient to fold

CN224225252UCN 224225252 UCN224225252 UCN 224225252UCN-224225252-U

Abstract

The utility model discloses a conveniently-folded wharf boarding ladder, which relates to the technical field of wharf boarding ladders and comprises a boarding ladder, wherein a self-locking hinge is arranged at one end of the boarding ladder, a guardrail is arranged on the surface of the boarding ladder, the self-locking hinge comprises a locking rotating head, a locking main arm rod, a locking strip and a cross beam, and two ends of the cross beam are respectively fixedly connected with the locking main arm rod. According to the utility model, the small rivet is clamped in the positioning clamping groove on the locking main arm rod in the flat-open state, at the moment, the ship ladder at the upper end cannot be folded, and can be folded from the ship ladder at the lower end, when the ship ladder at the lower end is rotated, the rotating ship ladder drives the locking rotary tail to rotate along with the rotating ship ladder so as to drive the locking strip to push upwards until the small rivet which is clamped in the positioning clamping groove on the locking main arm rod at the upper end of the locking strip is pushed out of the positioning clamping groove, so that the ship ladder at the upper end can be rotated and folded, and a hinge self-locking function can be achieved, and the ship ladder is more flexible and convenient to fold, store and expand.

Inventors

  • LU ZHIGANG
  • ZHAO JING

Assignees

  • 江苏珅宝船舶配件有限公司

Dates

Publication Date
20260512
Application Date
20250702

Claims (6)

  1. 1. The wharf boarding ladder convenient to fold comprises a boarding ladder (1) and is characterized in that a self-locking hinge (3) is arranged at one end of the boarding ladder (1), and a guardrail (2) is arranged on the surface of the boarding ladder (1); The self-locking hinge (3) comprises a locking rotating head (30), a locking main arm rod (32), a locking strip (33) and a cross beam (31), wherein the two ends of the cross beam (31) are fixedly connected with the locking main arm rod (32) respectively, the upper end of the locking main arm rod (32) is provided with a second movable groove (321), a positioning clamping groove (324) and a positioning groove (323) respectively, the upper end of the inner side of the locking main arm rod (32) is provided with the locking rotating head (30), and the outer side of the locking main arm rod (32) is provided with the locking strip (33).
  2. 2. The wharf boarding ladder convenient to fold according to claim 1, wherein the lower end of the locking rotating head (30) is provided with a U-shaped groove (301), the upper end of the locking strip (33) is provided with a first movable groove (331), the lower end of the locking strip (33) is provided with a through hole, the U-shaped groove (301), the second movable groove (321) and the first movable groove (331) are connected with each other through a large rivet (36), and the upper end of the locking rotating head (30) is fixedly connected with the boarding ladder (1).
  3. 3. The boarding ladder for the wharf convenient to fold according to claim 2 is characterized in that the upper end of the locking rotating head (30) is fixedly connected with a small rivet (35), the small rivet (35) is clamped with a positioning clamping groove (324), two positioning grooves (323) are respectively arranged at the lower end of the locking main arm rod (32), a through hole is arranged at the lower end of the locking strip (33), another large rivet (36) is rotatably connected in the through hole, the middle part of the large rivet (36) is clamped with the positioning groove (323), the innermost side of the large rivet (36) is rotatably connected with a locking rotating tail (34), and the upper end of the locking rotating tail (34) is rotatably connected with the locking main arm rod (32).
  4. 4. The wharf boarding ladder convenient to fold according to claim 1, wherein the guardrail (2) comprises a hinging block (20) fixedly connected to the surface of the boarding ladder (1), a first supporting column (21) is connected to the surface of the hinging block (20) in a threaded mode, and a threaded hole (22) is formed in the surface of the first supporting column (21).
  5. 5. The conveniently folded boarding ladder for wharf of claim 4, wherein the surface of the threaded hole (22) is connected with a fixing bolt (23) through threads, and the inside of the threaded hole (22) is movably connected with a second supporting column (24).
  6. 6. The wharf boarding ladder convenient to fold according to claim 5, wherein the second support column (24) is in threaded connection with the first support column (21) through a fixing bolt (23), and a guard plate (25) is fixedly connected to the top of the second support column (24).

Description

Dock boarding ladder convenient to fold Technical Field The utility model relates to the technical field of wharf boarding ladders, in particular to a wharf boarding ladder convenient to fold. Background In engineering ships or ships similar to vertical bulwarks, boarding ladders are required to be installed on two sides of a ship board, so that the operation of personnel of the ship and the communication between the ship and the external environment are facilitated. The existing boarding ladder is not detachable and foldable, so that when a ship approaches a service ship or approaches a wharf, the whole boarding ladder needs to be detached, the steps are complicated, and special personnel are required to operate. Meanwhile, the existing boarding ladder is not suitable for being disassembled and folded, and in order to solve the problem that non-native personnel board a ship and protect personal and article safety on ships, the boarding ladder in the prior art needs to be correspondingly improved, so that the boarding ladder for the wharf is convenient to fold. Disclosure of utility model The utility model aims to provide a wharf boarding ladder which is convenient to fold so as to solve the problems in the background technology. In order to solve the technical problems, the utility model adopts the following technical scheme: The wharf boarding ladder convenient to fold comprises a boarding ladder, wherein a self-locking hinge is arranged at one end of the boarding ladder, and a guardrail is arranged on the surface of the boarding ladder; The self-locking hinge comprises a locking rotating head, a locking main arm rod, a locking bar and a cross beam, wherein the two ends of the cross beam are respectively and fixedly connected with the locking main arm rod, the upper end of the locking main arm rod is respectively provided with a second movable groove, a positioning clamping groove and a positioning groove, the upper end of the inner side of the locking main arm rod is provided with the locking rotating head, and the outer side of the locking main arm rod is provided with the locking bar. The technical scheme of the utility model is further improved in that a U-shaped groove is formed in the lower end of the locking rotating head, a first movable groove is formed in the upper end of the locking strip, a through hole is formed in the lower end of the locking strip, the U-shaped groove, a second movable groove and the first movable groove are connected with each other through large rivets, the upper end of the locking rotating head is fixedly connected with a ship ladder, the ship ladder at the upper end of the locking rotating head is clamped in a positioning clamping groove on a locking main arm rod from small rivets in a flat-open state, and the ship ladder at the upper end cannot be folded. The locking main arm rod is characterized in that the upper end of the locking rotary head is fixedly connected with a small rivet, the small rivet is clamped with a positioning clamping groove, the lower end of the locking main arm rod is respectively provided with two positioning grooves, the lower end of the locking strip is provided with a through hole, the through hole is internally and rotatably connected with another large rivet, the middle part of the large rivet is clamped with the positioning groove, the innermost side of the large rivet is rotatably connected with a locking rotary tail, the upper end of the locking rotary tail is rotatably connected with a locking main arm rod, the locking rotary tail can be folded from a lower-end ship ladder, and when the lower-end ship ladder is rotated, the rotating ship ladder drives the locking rotary tail to rotate in a following manner so as to drive the locking strip to push upwards. The technical scheme of the utility model is further improved in that the guardrail comprises a hinging block fixedly connected to the surface of the ship ladder, a first support column is connected to the surface of the hinging block in a threaded manner, a threaded hole is formed in the surface of the first support column, and the fixing bolt is separated from the first support column and the second support column by rotating the fixing bolt, so that the second support column is pulled immediately. The technical scheme of the utility model is further improved in that the surface of the threaded hole is connected with a fixing bolt in a penetrating threaded manner, the inside of the threaded hole is movably connected with a second support column, and the second support column moves in the first support column 21 to be adjusted to a proper position and then moves to a proper position. The technical scheme of the utility model is further improved in that the second support column is in threaded connection with the first support column through the fixing bolt, the top of the second support column is fixedly connected with the guard board, the fixing bolt is rotated, and the fixing bolt f