Special lifting appliance convenient for butt joint and separation for port hoisting machinery

Abstract

The invention discloses a port hoisting machinery special lifting appliance convenient for butt joint and separation, and relates to the technical field of port crane lifting parts, the port hoisting machinery special lifting appliance comprises a container lifting frame, the container lifting frame is a rectangular frame body formed by splicing a lifting frame cross beam, a lifting frame vertical beam, a cross beam connecting frame and a vertical beam connecting plate, the front end and the rear end of the cross beam connecting frame are fixedly connected with the front hanging bracket cross beam and the rear hanging bracket cross beam correspondingly, the left end and the right end of the vertical beam connecting plate are fixedly connected with the hanging bracket vertical beams on the two sides correspondingly, two rotating shaft supports are installed on the upper surface of the vertical beam connecting plate through bolts, and a locking trigger rotating shaft is rotationally connected to the upper portion of the vertical beam connecting plate. Compared with a traditional mode that a driving piece is used for controlling separation and grabbing actions of the lifting appliance, the lifting appliance has the advantages that a driving motor and a power source connecting wire are omitted, the failure rate of the lifting appliance is reduced, the maintenance burden of the lifting appliance is reduced, and the total weight of the lifting appliance is reduced; and the operation load of hoisting machinery is reduced, and the energy consumption is reduced.

Description

[0001] This case is a divisional application. The application number of the original application is 2024109548299. The patent name is: Special sling for port lifting machinery. The original application date is July 17, 2024. The entire contents of the original application are incorporated into this application by reference. Technical Field

[0002] The invention relates to the technical field of hoisting components of port cranes, in particular to a special hoisting device for port cranes. Background Art

[0003] In traditional sea transportation, containers are used as transshipment containers for goods, and are transshipped by special lifting and hoisting machinery. At the same time, in order to improve the stability of container lifting, special container hoists are needed to clamp and fix the containers to ensure that the containers do not tilt or fall during the lifting process.

[0004] In traditional container spreaders for lifting machinery, the lifting head of the spreader is controlled by an electric control mechanical device to be inserted into the oval socket on the top of the container and rotated to lock the container. The spreader needs to be connected to the power supply through an electrical connection line or use a built-in mobile power supply to provide power for the spreader, and a drive mechanism needs to be installed in the spreader, which will greatly increase the weight of the spreader and increase the energy consumption for the operation of the lifting machinery. The humidity in the port environment will accelerate the damage of the power cord, power supply and drive mechanism, and increase the burden of equipment maintenance and servicing. Summary of the invention

[0005] The invention relates to a special spreader for port lifting machinery, so as to solve the problem that in traditional container spreaders for lifting machinery, the spreader head is controlled by an electric control mechanical device to be inserted into an elliptical socket on the top of a container and rotated to lock the container, the spreader needs to be connected to a power supply through an electrical connection line or a mobile power supply provided by the spreader is used to provide power for the spreader, and a driving mechanism needs to be installed in the spreader, which greatly increases the weight of the spreader and increases the energy consumption for the operation of the lifting machinery. The humidity in the port environment will accelerate the damage of the power line, the power supply and the driving mechanism, and increase the burden of equipment maintenance and servicing.

[0006] The first aspect of the present disclosure provides a special hoist for port lifting machinery, specifically comprising: a container hanger, wherein the container hanger is a rectangular frame formed by splicing a hanger crossbeam, a hanger vertical beam, a crossbeam connecting frame and a vertical beam connecting plate, the front end and the rear end of the crossbeam connecting frame are respectively fixedly connected to the hanger crossbeams in the front and rear, the left end and the right end of the vertical beam connecting plate are respectively fixedly connected to the hanger vertical beams on both sides, the upper surface of the vertical beam connecting plate is bolted with two "U"-shaped shaft supports, a locking trigger shaft is rotatably connected above the vertical beam connecting plate, the locking trigger shaft is rotatably connected to the two shaft supports through a bearing, and the four A top corner connection lock frame is fixedly connected at each of the top corners, a control swivel is rotatably connected inside the top corner connection lock frame, a rotating plug is fixedly connected to the lower end of the control swivel, the interior of the hanger vertical beam is rotatably connected to a linkage synchronous shaft through a bearing, a trigger hanging plate is connected to the locking trigger shaft through an interference fit, an adjustment pull frame is movably connected to the trigger hanging plate, a locking control pull rope is connected above the adjustment pull frame, two status display lights are fixedly connected to the locking trigger shaft, a mobile power supply is installed on the upper surface of the vertical beam connecting plate by screws, and the mobile power supply is located below the locking trigger shaft.

[0007] Preferably, the top angle connecting lock frame is a rectangular shell with an opening on the inner side, the control swivel is perpendicular to the lower surface of the top angle connecting lock frame, a swivel limit ring is welded on the control swivel, the swivel limit ring is located inside the top angle connecting lock frame, the upper end of the control swivel is fixedly connected to the control shaft driven bevel gear by an interference fit, and a docking block with a long strip structure is welded on the lower surface of the top angle connecting lock frame, and the docking block is arranged parallel to the hanger crossbeam.

[0008] Preferably, a rotating trigger ring is tightly sleeved on the locking trigger shaft, and an extrusion push block is fixedly connected to the outer surface of the rotating trigger ring. The orientation angles of the two extrusion push blocks differ by ninety degrees, and the two ends of the locking trigger shaft are respectively fixedly connected to a trigger shaft active bevel gear through an interference fit.

[0009] Preferably, a synchronous shaft driven gear is fixedly connected in the middle of the linked synchronous rotating shaft by interference fit, and a synchronous shaft driving gear is fixedly connected at both ends of the linked synchronous rotating shaft by interference fit.

[0010] Preferably, the locking trigger shaft is connected to and drives two linked synchronous shafts through the meshing of the trigger shaft driving bevel gear and the synchronous shaft driven gear, and the linked synchronous shaft is connected to and drives two control shafts through the meshing of the synchronous shaft driving gear and the control shaft driven bevel gear.

[0011] Preferably, a tapered end is provided at the lower end of the rotary plug, the top view structure of the rotary plug is rectangular, and the upper surface of the rotary plug is structurally consistent with the lower surface of the docking block.

[0012] Preferably, the trigger hanger plate has an outer shape of a right-angled isosceles triangle plate, an oblique slide groove is provided inside the trigger hanger plate, the oblique slide groove is parallel to the long side of the trigger hanger plate, and a linkage hook groove is provided at each end of the oblique slide groove, and the linkage hook groove is bent toward the long side of the trigger hanger plate.

[0013] Preferably, the adjustment bracket is a "U"-shaped bracket, an adjustment slide pin is fixedly connected inside the adjustment bracket, the adjustment slide pin is slidably connected inside the oblique slide groove, the upper end of the adjustment bracket is fixedly connected to a tension spring, and the upper end of the tension spring is fixedly connected to the lower end of the locking control rope.

[0014] Preferably, two normally-off and normally-on buttons are fixedly connected to the top of the mobile power supply, the two normally-off and normally-on buttons are respectively located below the two extrusion push blocks, the two normally-off and normally-on buttons are both electrically connected to the mobile power supply, and the two normally-off and normally-on buttons are respectively connected to two status display lights through electrical lines.

[0015] Preferably, the status display lights use LED lamp beads as light sources, the LED lamp beads of the two status display lights are red and green respectively, the status display light panel has an "L"-shaped structure, and the support rod angles between the two groups of status display lights differ by ninety degrees.

[0016] The present invention provides a special lifting device for port lifting machinery, which has the following beneficial effects: The port lifting machinery in the present invention is connected to the four top corners of the sling through four slings, and the lifting and lowering movement of the sling is controlled by the lifting machinery. When the sling is docked with the container, the four rotating plugs are respectively inserted into the four rectangular docking holes of the container through the lifting machinery, and the rotating plug is triggered to rotate ninety degrees through the lifting action and a series of transmissions, so that the rotating plug is clamped inside the container docking port, so that the container and the sling are fixedly connected, and the sling has the function of automatically docking the container. At the same time, after the cargo transfer is completed, the container is placed in the set area, and the control structure in the sling can be triggered to rotate ninety degrees in the opposite direction when the sling is evacuated, so that the rotating plug is aligned with the container docking port, so that the sling can be stably separated from the top of the container, and the sling has the function of automatically separating the container. Compared with the traditional use of a driving part to control the separation and grabbing action of the sling, the driving motor and the power connection line are saved, the failure rate of the equipment is reduced, the burden of equipment maintenance and maintenance work is reduced, the total weight of the sling is reduced, the operating load of the lifting machinery is reduced, and the energy consumption is reduced.

[0017] In addition, a display structure for the docking and separation status of the spreader and the container is provided, and the two statuses are respectively displayed by status display lights of two different colors. The display structure can display the rotation direction status of the locking trigger shaft, and the status display light of the "L"-shaped structure allows operators and observers to view from multiple directions, thereby increasing the visible range. The orientation of the rotating plug inside the docking hole of the container can be judged according to the status display light, thereby reducing the difficulty of judgment for the operator, and the docking status of the spreader and the container can be more clearly judged visually, thereby avoiding the situation where the container falls during transportation due to loose docking between the container and the spreader due to misjudgment, thereby improving the stability of container lifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0019] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0020] In the attached picture: Figure 1 A schematic diagram showing the overall structure of the present application; Figure 2 The structural schematic diagram at the bottom of this application is shown; Figure 3 It shows a schematic diagram of the structure of the rotary plug of the present application in a state of locking the container; Figure 4 Shows this application Figure 3 The structural diagram at the bottom; Figure 5 It shows a schematic structural diagram of the locking trigger shaft of the present application; Figure 6 It shows a schematic diagram of the structure of the linked synchronous shaft of the present application; Figure 7 The schematic diagram of the structure of the control swivel of the present application is shown; Figure 8 It shows a schematic diagram of the structure of the triggering hanging plate when the lifting device of the present application is separated from the container; Fig. 9 It shows a schematic diagram of the structure of the triggering hanging plate when the lifting device of the present application is in the docking state with the container; Fig.10 This application shows Figure 1 A schematic diagram of the partially enlarged structure at point A in the middle; Fig.11 This application shows Figure 2 A schematic diagram of the partially enlarged structure at B in the middle; Fig.12 This application shows Figure 5Schematic diagram of the partially enlarged structure at point C in the middle.

[0021] Reference numerals list 1. Container hanger; 101. Hanger crossbeam; 102. Hanger vertical beam; 103. Crossbeam connecting frame; 104. Vertical beam connecting plate; 105. Rotating shaft support; 2. Vertex connecting lock frame; 201. Control swivel; 202. Swivel limit ring; 203. Control shaft driven bevel gear; 204. Docking plug; 3. Lock trigger shaft; 301. Rotating trigger ring; 302. Extrusion push block; 303. Trigger shaft driving bevel gear; 4. Linkage synchronous shaft; 401. Synchronous shaft driven gear; 402. Synchronous shaft driving gear; 5. Rotating plug; 6. Trigger hanging plate; 601. Oblique slide groove; 602. Linkage hook groove; 7. Adjustment pull frame; 701. Adjustment slide pin; 702. Tension spring; 8. Locking control rope; 9. Status display light; 10. Mobile power supply; 1001. Normally open and closed button. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Example 1: Please refer to Figures 1 to 12 : The present invention proposes a special hanger for port lifting machinery, including: a container hanger 1, the container hanger 1 is a rectangular frame formed by splicing a hanger cross beam 101, a hanger vertical beam 102, a cross beam connecting frame 103 and a vertical beam connecting plate 104, the front end and the rear end of the cross beam connecting frame 103 are respectively fixedly connected to the hanger cross beams 101 in front and rear, the left end and the right end of the vertical beam connecting plate 104 are respectively fixedly connected to the hanger vertical beams 102 on both sides, the upper surface of the vertical beam connecting plate 104 is bolted with two "U"-shaped rotating shaft supports 105, the upper part of the vertical beam connecting plate 104 is rotatably connected with a locking trigger rotating shaft 3, the locking trigger rotating shaft 3 is rotatably connected to the two rotating shaft supports 105 through a bearing, and the container hanger 1 is a rectangular frame formed by splicing a cross beam 101, a cross beam connecting frame 103 and a vertical beam connecting plate 104, the front end and the rear end of the cross beam connecting frame 103 are respectively fixedly connected to the front and rear cross beams 101 of the hanger, the left end and the right end of the vertical beam connecting plate 104 are respectively fixedly connected to the hanger vertical beams 102 on both sides, the upper surface of the vertical beam connecting plate 104 is bolted with two "U"-shaped rotating shaft supports 105, the upper part of the vertical beam connecting plate 104 is rotatably connected with a locking trigger rotating shaft 3, the locking trigger rotating shaft 3 is rotatably connected to the two rotating shaft supports 105 through a bearing, The four top corners of the packing hanger 1 are respectively fixedly connected with a top corner connecting lock frame 2, the top corner connecting lock frame 2 is rotatably connected with a control shaft 201, the lower end of the control shaft 201 is fixedly connected with a rotating plug 5, the inside of the hanger vertical beam 102 is rotatably connected with a linkage synchronous shaft 4 through a bearing, the locking trigger shaft 3 is connected with a trigger hanging plate 6 through an interference fit, the trigger hanging plate 6 is movably connected with an adjusting pull frame 7, and a locking control pull rope 8 is connected above the adjusting pull frame 7, two status display lights 9 are fixedly connected to the locking trigger shaft 3, and a mobile power supply 10 is installed on the upper surface of the vertical beam connecting plate 104 by screws, and the mobile power supply 10 is located below the locking trigger shaft 3.

[0024] In the disclosed embodiment, the vertex connecting lock frame 2 is a rectangular shell with an opening on the inner side, and the control swivel 201 is perpendicular to the lower surface of the vertex connecting lock frame 2. A swivel limit ring 202 is welded on the control swivel 201, and the swivel limit ring 202 is located inside the vertex connecting lock frame 2. The upper end of the control swivel 201 is fixedly connected to the control shaft driven bevel gear 203 by an interference fit, and a long strip-shaped docking block 204 is welded on the lower surface of the vertex connecting lock frame 2, and the docking block 204 is arranged parallel to the hanger crossbeam 101; the swivel limit ring 202 plays a limiting role, thereby improving the axial force bearing strength of the control swivel 201, and through the arrangement of the docking block 204, the docking block 204 is inserted into the docking port after the container hanger 1 is docked with the container, thereby improving the docking accuracy.

[0025] In the disclosed embodiment, the trigger hanging plate 6 has an outer shape of a right-angled isosceles triangle plate, an oblique slide groove 601 is provided inside the trigger hanging plate 6, the oblique slide groove 601 is parallel to the long side of the trigger hanging plate 6, and a linkage hook groove 602 is provided at each end of the oblique slide groove 601, and the linkage hook groove 602 is bent toward the long side of the trigger hanging plate 6; the adjustment bracket 7 is a "U"-shaped bracket, and an adjustment slide pin 701 is fixedly connected to the inside of the adjustment bracket 7, and the adjustment slide pin 701 is slidably connected to the inside of the oblique slide groove 601, and a tension spring 702 is fixedly connected to the upper end of the adjustment bracket 7, and the upper end of the tension spring 702 is fixedly connected to the lower end of the locking control rope 8; as the lifting machinery controls the locking control rope 8 to rise and fall, the control The adjusting pull frame 7 slides at both ends of the inclined slide groove 601. When the locking control rope 8 is in a relaxed state, the adjusting pull frame 7 slides to its bottom end along the oblique slide groove 601. When the locking control rope 8 is pulled again, the adjusting pull frame 7 moves up and enters the linkage hook groove 602 at the lower end of the inclined slide groove 601, and as the locking control rope 8 is continuously pulled, the trigger hanging plate 6 rotates ninety degrees, driving the locking trigger shaft 3 to rotate, thereby realizing the rotation control of the locking trigger shaft 3. After a single rotation, the position of the trigger hanging plate 6 remains unchanged. The gravity of the adjusting pull frame 7 is used to make the adjusting pull frame 7 automatically slide down and reset, so that the control structure formed by the trigger hanging plate 6 and the adjusting pull frame 7 can be used continuously.

[0026] In the disclosed embodiment, the middle of the linked synchronous shaft 4 is fixedly connected with a synchronous shaft driven gear 401 by interference fit, and the two ends of the linked synchronous shaft 4 are respectively fixedly connected with a synchronous shaft driving gear 402 by interference fit; the locking trigger shaft 3 is connected and drives the two linked synchronous shafts 4 by the meshing of the trigger shaft driving bevel gear 303 and the synchronous shaft driven gear 401, and the linked synchronous shaft 4 is connected and drives the two control shafts 201 by the meshing of the synchronous shaft driving gear 402 and the control shaft driven bevel gear 203; the lower end of the rotating plug 5 is provided with a cone end, and the rotating plug The top view structure of 5 is rectangular, and the upper surface of the rotating plug 5 is consistent with the lower surface structure of the docking plug block 204; when the locking trigger shaft 3 is driven by the trigger hanging plate 6 to rotate ninety degrees, the gear transmission drive of the trigger shaft active bevel gear 303 and the synchronous shaft driven gear 401 is linked to rotate ninety degrees, and at the same time, the gear transmission drive of the synchronous shaft active gear 402 and the control shaft driven bevel gear 203 is used to control the rotating shaft 201 to rotate ninety degrees, so that the rotating plug 5 rotates ninety degrees inside the container docking hole, and the docking state of the rotating plug 5 and the container docking interface is controlled.

[0027] Embodiment 2, on the basis of embodiment 1, a rotating trigger ring 301 is tightly sleeved on the locking trigger shaft 3, and an extrusion push block 302 is fixedly connected to the outer surface of the rotating trigger ring 301, and the orientation angles of the two extrusion push blocks 302 differ by ninety degrees, and the two ends of the locking trigger shaft 3 are respectively fixedly connected to a trigger shaft active bevel gear 303 through interference fit; as the locking trigger shaft 3 rotates, the rotating trigger ring 301 rotates, so that the two extrusion push blocks 302 exchange directions, respectively controlling the extrusion and separation of the two normally-off and make buttons 1001, and respectively controlling the on and off states of the two status display lights 9, and two normally-off and make buttons 1001 are fixedly connected to the top of the mobile power supply 10, and the two normally-off and make buttons 1001 are fixedly connected to the top of the mobile power supply 10. The on / off buttons 1001 are respectively located below the two extrusion push blocks 302, and the two normally on / off buttons 1001 are both electrically connected to the mobile power supply 10, and the two normally on / off buttons 1001 are respectively connected to the two status display lights 9 through electrical lines; the status display lights 9 use LED lamp beads as light sources, and the status display light 9 light board has an "L"-shaped structure. The support rod angles between the two groups of status display lights 9 differ by ninety degrees. As the direction of the locking trigger shaft 3 changes, the two status display lights 9 are respectively rotated upward for display. The lamp beads on the two status display lights 9 are of two colors respectively. The "L"-shaped status display lights 9 allow operators and observers to view from multiple directions, thereby improving the visible range.

[0028] The working principle of this embodiment is as follows: first, when the spreader is unloaded, the direction of the rotating plug 5 is consistent with the direction of the docking plug block 204, and the container hanger 1 is controlled by the lifting machinery to move above the container, and the rotating plug 5 is vertically inserted into the rectangular docking port of the container, so that the container hanger 1 fits the upper surface of the container. At this time, the four slings connected to the lifting machinery and the locking control rope 8 are all in a relaxed and bent state. The adjustment pull frame 7 slides downward along the trigger hanging plate 6 under its own gravity, so that the adjustment slide pin 701 slides to one end of the bottom of the oblique slide groove 601. When lifting the goods, the four slings and the locking control rope 8 are pulled upward synchronously by the lifting machinery. The locking control rope 8 is first straightened and then The adjusting pull frame 7 is pulled upward. When the adjusting pull frame 7 is subjected to the vertical upward pulling force, it enters the linkage hook groove 602 at the lower end. With the continuous pulling of the locking control rope 8, the trigger hanging plate 6 is pulled and rotated ninety degrees by adjusting the sliding pin 701, and the locking trigger shaft 3 is driven to rotate ninety degrees. The gear transmission of the trigger shaft active bevel gear 303 and the synchronous shaft driven gear 401 drives the linkage synchronous shaft 4 to rotate ninety degrees. At the same time, the gear transmission of the synchronous shaft active gear 402 and the control shaft driven bevel gear 203 drives the control shaft 201 to rotate ninety degrees, so that the rotating plug 5 rotates ninety degrees inside the container docking hole, and the direction is reversed so that the rotating plug 5 is stuck inside the container docking hole, and the collection is completed. Automatic docking of the container and the spreader. When the container is transferred to the designated location, the container is placed on the bottom surface by a lifting machine, and the sling and the locking control rope 8 are lowered a certain distance to make them loose and bent. At this time, the adjusting bracket 7 slides downward to the side again in the trigger hanging plate 6 under the action of its own gravity, so that the adjusting slide pin 701 slides to the other end of the oblique slide groove 601. When the container hanger 1 is transferred, the sling and the locking control rope 8 are pulled upward by a lifting machine, so that the adjusting bracket 7 moves upward under the action of tension, so that the adjusting slide pin 701 enters the linkage hook groove 602 at the lower end of the trigger hanging plate 6 in this state, and the trigger hanging plate 6 is rotated in the opposite direction by ninety degrees by pulling up the adjusting bracket 7, and the trigger shaft 3 is locked. , the linkage synchronous shaft 4, the control shaft 201 and a series of gear transmissions, the rotating plug 5 rotates in the opposite direction by ninety degrees, so that the rotating plug 5 is in the same direction as the container docking port again, so that the top angle connecting lock frame 2 is separated from the container under the vertical upward pulling action, thereby realizing the automatic docking and separation of the container and the spreader; at the same time, with the rotation of the locking trigger shaft 3, the two squeezing push blocks 302 respectively squeeze the two normally-off and normally-on buttons 1001 alternately, so that the two status display lights 9 are alternately connected to the mobile power supply 10 and light up while rotating and unfolding, so that the operator and the observer can judge the direction of the rotating plug 5 inside the container docking hole according to the status display light 9, and judge the docking status of the spreader and the container by vision.

[0029] In this article, there are a few points to note: 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.

[0030] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0031] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A special spreader for port cranes that is easy to connect and separate, comprising: A container hanger (1), the container hanger (1) being a rectangular frame body formed by splicing a hanger crossbeam (101), a hanger vertical beam (102), a crossbeam connecting frame (103) and a vertical beam connecting plate (104), characterized in that a rotating shaft support (105) is installed on the upper surface of the vertical beam connecting plate (104) by means of bolts, and a locking trigger rotating shaft (3) is rotatably connected to the upper side of the vertical beam connecting plate (104); The four top corners of the container hanger (1) are respectively fixedly connected to a top corner connection lock frame (2), the top corner connection lock frame (2) is rotatably connected to a control shaft (201) inside, the upper end of the control shaft (201) is fixedly connected to a control shaft driven bevel gear (203) through an interference fit, the lower end of the control shaft (201) is fixedly connected to a rotating plug (5), a long strip-shaped docking plug (204) is welded to the lower surface of the top corner connection lock frame (2), and the inside of the hanger vertical beam (102) is rotatably connected to a linkage synchronous shaft (4) through a bearing; The locking trigger shaft (3) is tightly sleeved with a rotating trigger ring (301), and the outer surface of the rotating trigger ring (301) is fixedly connected with an extrusion push block (302), and the orientation angles of the two extrusion push blocks (302) differ by ninety degrees. The two ends of the locking trigger shaft (3) are respectively fixedly connected with a trigger shaft driving bevel gear (303); The middle of the linked synchronous rotating shaft (4) is fixedly connected to a synchronous shaft driven gear (401) by interference fit, and both ends of the linked synchronous rotating shaft (4) are respectively fixedly connected to a synchronous shaft driving gear (402); The locking trigger rotating shaft (3) is connected to and drives the two linked synchronous rotating shafts (4) through the meshing of the trigger shaft driving bevel gear (303) and the synchronous shaft driven gear (401); the linked synchronous rotating shaft (4) is connected to and drives the two control rotating shafts (201) through the meshing of the synchronous shaft driving gear (402) and the control shaft driven bevel gear (203).

2. The special lifting device for port cranes that is convenient for docking and separation according to claim 1 is characterized in that: The top angle connecting lock frame (2) is a rectangular parallelepiped shell with an opening on the inner side, the control swivel (201) is perpendicular to the lower surface of the top angle connecting lock frame (2), a swivel limiting ring (202) is welded on the control swivel (201), and the swivel limiting ring (202) is located inside the top angle connecting lock frame (2).

3. The special lifting device for port cranes that is easy to dock and separate according to claim 1 is characterized in that: Two U-shaped rotating shaft supports (105) are mounted on the upper surface of the vertical beam connecting plate (104) by means of bolts, and the locking trigger rotating shaft (3) is rotatably connected to the two rotating shaft supports (105) by means of bearings.

4. The special lifting device for port cranes that is easy to connect and separate according to claim 1 is characterized in that: The locking trigger rotating shaft (3) is connected to a trigger hanging plate (6) through an interference fit, the trigger hanging plate (6) is movably connected to an adjustment pull frame (7), and a locking control pull rope (8) is connected above the adjustment pull frame (7).

5. The special lifting device for port cranes that is convenient for docking and separation according to claim 2 is characterized in that: Two status display lights (9) are fixedly connected to the locking trigger rotating shaft (3), and a mobile power source (10) is mounted on the upper surface of the vertical beam connecting plate (104) by means of screws. The mobile power source (10) is located below the locking trigger rotating shaft (3).

6. The special lifting device for port cranes that is easy to connect and separate according to claim 1 is characterized in that: The lower end of the rotary plug (5) is provided with a cone end. The top view structure of the rotary plug (5) is rectangular, and the upper surface of the rotary plug (5) is structurally consistent with the lower surface of the docking block (204).

7. The special lifting device for port cranes that is convenient for docking and separation according to claim 4 is characterized in that: An oblique sliding groove (601) is provided inside the trigger hanging plate (6), the oblique sliding groove (601) is parallel to the long side of the trigger hanging plate (6), and a linkage hook groove (602) is provided at each end of the oblique sliding groove (601), the linkage hook groove (602) is bent toward the long side of the trigger hanging plate (6).

8. The special lifting device for port cranes that is convenient for docking and separation according to claim 4 is characterized in that: The adjusting pull frame (7) is a "U"-shaped frame, and an adjusting sliding pin (701) is fixedly connected inside the adjusting pull frame (7), and the adjusting sliding pin (701) is slidably connected inside the oblique sliding groove (601). The upper end of the adjusting pull frame (7) is fixedly connected to a tension spring (702), and the upper end of the tension spring (702) is fixedly connected to the lower end of the locking control rope (8).

9. The special lifting device for port cranes that is convenient for docking and separation according to claim 6 is characterized in that: A mobile power source (10) is mounted on the upper surface of the vertical beam connecting plate (104) by means of screws, and the mobile power source (10) is located below the locking trigger rotating shaft (3); Two normally-off make buttons (1001) are fixedly connected to the top of the mobile power source (10), the two normally-off make buttons (1001) are respectively located below the two extrusion push blocks (302), the two normally-off make buttons (1001) are both electrically connected to the mobile power source (10), and the two normally-off make buttons (1001) are respectively connected to the two status display lights (9) via electrical wires.

10. The special lifting device for port cranes that is convenient for docking and separation according to claim 8, characterized in that: The status display lights (9) use LED lamp beads as light sources, the status display lights (9) have an "L"-shaped light board, and the support rod angles between the two groups of status display lights (9) differ by ninety degrees.

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