Ship crane for chemical tanker

Abstract

The invention discloses a chemical tanker ship crane which comprises a reinforcing base arranged on a deck of a ship to provide stable support. The suspension arm assembly is arranged on the reinforcing base, the suspension arm assembly comprises a main suspension arm part, a secondary suspension arm part and a crane rope guide part, and the main suspension arm part is hinged to the reinforcing base to provide support; the secondary lifting arm piece is arranged on the main lifting arm piece and cooperates with the main lifting arm piece to provide lifting support; and the crane rope guide piece is used for carrying out hoisting operation on an object to be hoisted on the main suspension arm piece and the secondary suspension arm piece. The device is reasonable in structural design, wide in application range, high in hoisting loading capacity, small in occupied area and high in deck area utilization rate.

Description

Technical Field

[0001] The present invention relates to the technical field of ship equipment, and more specifically, to a chemical tanker crane. Background Art

[0002] For small and medium-sized chemical tankers with cranes at the stern, due to the limited space on the poop deck, mooring arrangements (including winches, mooring bollards, fairleads, roller fairleads, etc.) are often set at the stern of the ship, which limits the structure of the ship's cranes and interferes with the layout and lifting methods. In addition, the living area of ​​the ship is set at the stern, so such an arrangement requires full consideration of the rationality of the structure of the ship's cranes to maximize the satisfaction of their respective use functions and the structural strength requirements of the crane base. Summary of the invention

[0003] In order to overcome the above defects, the present invention provides a chemical tanker crane, which specifically adopts the following technical solutions:

[0004] A chemical tanker crane, comprising:

[0005] A reinforced base, the reinforced base being arranged on the deck of the ship to provide stable support;

[0006] A boom assembly is arranged on the reinforced base, and the boom assembly includes a main boom member, a secondary boom member and a crane guide rope member. The main boom member is hinged on the reinforced base to provide support; the secondary boom member is on the main boom member and cooperates with the main boom member to provide lifting support; the crane guide rope member performs lifting operations on the main boom member and the secondary boom member to lift the object to be lifted.

[0007] Preferably, the reinforced base comprises a base cylinder, the bottom end of which is arranged on the multiple layers of the deck, and the base cylinder is located in the mid-ship position at the stern of the ship.

[0008] Preferably, the main boom member includes a main boom and a first push-pull cylinder, one end of the main boom is hinged to the top end surface of the reinforced base, the bottom end of the first push-pull cylinder is hinged to the top end surface of the reinforced base, and the top end of the first push-pull cylinder is hinged to the side wall of the main boom.

[0009] Preferably, the secondary boom member includes a secondary boom position adjustment member, a secondary boom inclination adjustment member, a secondary boom and a top locking member, the secondary boom position adjustment member and the top locking member are both arranged on the main boom member, the secondary boom inclination adjustment member is arranged on the secondary boom position adjustment member, and the secondary boom is arranged on the secondary boom inclination adjustment member.

[0010] Preferably, the secondary suspension position adjustment component includes a screw, a motor, a nut and a power transmission block. The screw is arranged on both ends of the main suspension arm through rotating support seats arranged at both ends. The motor is arranged on the main suspension arm, and the rotating shaft of the motor is transmission-connected to one end of the screw. The nut is fitted on the screw, one end of the power transmission block is arranged on the side wall of the nut, and the other end of the power transmission block is fitted to pass through the first transmission through hole on a groove wall of the main suspension arm.

[0011] Preferably, the secondary suspension position adjusting parts are provided in multiple sets, and the multiple sets of the secondary suspension position adjusting parts are symmetrically distributed on the groove walls on both sides of the main suspension arm.

[0012] Preferably, the secondary suspension inclination angle adjustment member includes a secondary suspension inclination angle slide and a second push-pull cylinder, the secondary suspension inclination angle slide is slidably embedded in the main suspension arm slot, and the secondary suspension inclination angle slide slot wall is connected to the other end of the power transmission block; the bottom end of the second push-pull cylinder is hinged to the bottom end of the secondary suspension inclination angle slide slot, and the top end of the second push-pull cylinder passes through the second transmission through hole on the bottom surface of the secondary suspension inclination angle slide slot and is hinged to the secondary suspension arm.

[0013] Preferably, after one end of the secondary boom passes through the second transmission through hole, the one end of the secondary boom is hinged to the top end of the second push-pull cylinder, and the secondary boom is rotationally connected to the other end of the secondary boom tilt slide through a rotating shaft.

[0014] Preferably, the top locking piece includes a locking and fixing tube, a magnetic coil, a locking shaft and a locking auxiliary tube. The locking and fixing tube is arranged on the groove wall at the other end of the main boom. The magnetic coil is fixedly embedded in the spiral groove on the inner wall of the locking and fixing tube. The locking shaft is axially slidably embedded in the locking and fixing tube. The locking auxiliary tube is arranged on the groove wall of the main boom.

[0015] Preferably, the crane rope guide member includes an electric motor, a drum, a first guide rope pulley group, a second guide rope pulley group, a third guide wheel pulley group, a wire rope, a movable pulley and a hook, the motor is arranged on the top end surface of the reinforced base, the drum is arranged on the top end surface of the reinforced base, and one end of the drum is transmission-connected to the rotating shaft of the motor; the first guide rope pulley group is arranged on one end of the main boom, the second guide rope pulley group is arranged on the other end of the main boom, and the third guide wheel pulley group is arranged on the other end of the secondary boom; one end of the wire rope is wound around the drum, and the other end of the wire rope is fixedly connected to the other end of the secondary boom after being guided by the first guide rope pulley group, the second guide rope pulley group and the third guide wheel pulley group; the movable pulley is arranged on the other end of the wire rope, and the hook is arranged on the movable pulley.

[0016] The present invention has at least the following beneficial effects:

[0017] 1) The chemical tanker crane of the present invention has a reasonable structural design, a wide range of applications, a large lifting load capacity, a small footprint and a high deck area utilization rate;

[0018] 2) The chemical tanker crane of the present invention is provided with a main boom and a secondary boom. When the lifting needs to extend the main boom and the secondary boom combination to the maximum length to meet the lifting requirements: after the second push-pull cylinder is retracted to a predetermined position, the axis of the secondary boom tends to be parallel to the longitudinal direction of the secondary lifting tilt slide; then the secondary lifting position adjustment part is started to push the secondary lifting tilt slide to the predetermined position at the other end of the main boom; finally, the top locking part is started to lock the secondary boom on the main boom through the locking shaft, and the carrying capacity of the chemical tanker crane is improved through the synergistic effect of the locking shaft, the first push-pull cylinder, the second push-pull cylinder and the screw. When the chemical tanker crane is not in use and needs to be folded and stored on the deck: after the second push-pull cylinder is retracted to a predetermined position, the axis of the secondary boom becomes parallel to the longitudinal direction of the secondary boom tilt slide; then the secondary boom position adjustment member is activated to push the secondary boom tilt slide to a predetermined position at the bottom end of the main boom, so as to shorten the common extension length of the secondary boom and the main boom, and reduce the deck area for parking the chemical tanker crane; the use range and load capacity of the chemical tanker crane are significantly improved, and the floor space occupied is significantly reduced.

[0019] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a diagram of the mooring of the chemical tanker ship crane and the arrangement of the crane on the deck;

[0021] Figure 2 The chemical tanker crane of the present invention Figure 1 Main section view in the middle AA direction;

[0022] Figure 3 It is a schematic diagram of the three-dimensional structure of the boom assembly in the crane of a chemical tanker of the present invention;

[0023] Figure 4 A top view of a boom assembly in a chemical tanker crane of the present invention;

[0024] Figure 5 It is a schematic diagram of the left three-dimensional structure of the boom assembly in the chemical tanker crane of the present invention;

[0025] Figure 6It is a schematic diagram of the right side three-dimensional structure of the boom assembly in the chemical tanker crane of the present invention;

[0026] Figure 7 The chemical tanker crane of the present invention Figure 6 A partial enlarged view of middle C;

[0027] Figure 8 The chemical tanker crane of the present invention Figure 4 Schematic diagram of the three-dimensional structure in the cross section along the BB direction.

[0028] Among them: 1-base cylinder, 2-deck, 3-main boom, 4-first push-pull cylinder, 5-screw, 6-motor, 7-nut, 8-power transmission block, 9-rotating support seat, 10-secondary lifting inclination slide, 11-second push-pull cylinder, 12-locking fixed pipe, 13-locking auxiliary pipe, 14-first guide rope pulley block, 15-second guide rope pulley block, 16-third guide wheel pulley block, 17-wire rope, 18-movable pulley, 19-hook, 20-secondary boom. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be described in detail below by way of embodiments with reference to the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0030] The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist at the same time. The term " / and" in this article describes another type of association object relationship, indicating that there can be two relationships. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the previous and next associated objects are in an "or" relationship.

[0031] according to Figure 1-Figure 8 As shown, a chemical tanker ship crane comprises a reinforced base and a boom assembly, wherein the reinforced base is arranged on the ship, and the boom assembly is arranged on the reinforced base. The reinforced base comprises a base cylinder 1, and the base cylinder 1 is arranged on the deck 2 of the ship. The base cylinder 1 is generally tubular, and the bottom end of the base cylinder 1 is fixedly arranged on the deck 2 across three decks 2, and the base cylinder 1 is located in the midship position at the stern of the ship.

[0032] It should be noted that most of the living area of ​​the ship is arranged at the stern, and the height of the crane is often affected by the reserved living area to choose which deck 2 is more suitable for arrangement. In this embodiment, since the length of the reserved stern space is limited, the base of the crane needs to be combined with the upper structure into a whole, which can save space in the living area.

[0033] The base cylinder 1 of this embodiment spans three floors of living areas, and the bottom floor also needs to consider the mooring arrangement on the deck 2. Therefore, when selecting the crane position, it is necessary to avoid the use area of ​​the mooring part first, and also to consider the distance of the personnel walking passage 800mm, all of which need to be reserved. After comprehensive consideration, the base position of the crane is suitable for the midship position. Figure 1 This is the layout of the mooring and crane on deck 2.

[0034] Since the base cylinder 1 spans three decks 2, the base cylinder 1 is 6.3m high. The cylinder strength at the bottom of the base needs to be transferred to the structure of the living area. In this embodiment, a reinforced transition structure at the height of the bottom deck 2 is made with the help of the structure of the living area. The T-shaped structure is used for the upper two layers. After structural finite element calculation, the strength requirements are met. Figure 2 for Figure 1 Schematic diagram of the cross section in the middle AA direction; the high-strength plate is replaced at the contact position between the base cylinder 1 and the deck 2, and the back side is reinforced with a large-sized high-strength plate.

[0035] The boom assembly includes a main boom member, a secondary boom member and a crane rope guide member. The main boom member is arranged on the reinforced base, the secondary boom member is arranged on the main boom member, and the crane rope guide member is arranged on the main boom member and the secondary boom member. The main boom member includes a main boom 3 and a first push-pull cylinder 4. One end of the main boom 3 is hinged on the top surface of the reinforced base, the bottom end of the first push-pull cylinder 4 is hinged on the top surface of the reinforced base, and the top end of the first push-pull cylinder 4 is hinged on the side wall of the main boom 3 to push and pull the main boom 3 so that the main boom 3 rotates around the hinge point. Further, the main boom 3 is in the shape of a rectangular groove to provide support for the secondary boom member. Further, the first push-pull cylinder 4 is a hydraulic cylinder or an electric push-pull cylinder.

[0036] The secondary boom member includes a secondary boom position adjustment member, a secondary boom inclination adjustment member, a secondary boom 20 and a top locking member. The secondary boom position adjustment member and the top locking member are both arranged on the main boom member, the secondary boom inclination adjustment member is arranged on the secondary boom position adjustment member, and the secondary boom 20 is arranged on the secondary boom inclination adjustment member.

[0037] The secondary suspension position adjustment member includes a screw rod 5, a motor 6, a nut 7 and a power transmission block 8. Both ends of the screw rod 5 are rotatably mounted with a rotation support seat 9. The screw rod 5 is fixedly mounted on both ends of a groove wall of the main suspension arm 3 through the rotation support seats 9 at both ends, and the axis of the screw rod 5 is parallel to the longitudinal line of the main suspension arm 3, so that the screw rod 5 is circumferentially rotated and axially locked on the main suspension arm 3. The motor 6 is fixedly mounted on the main suspension arm 3, and the rotating shaft of the motor 6 is transmission-connected with one end of the screw rod 5 to drive the screw rod 5 to rotate. The nut 7 is fitted on the screw rod 5, and the power transmission block 8 is in the shape of a rectangular block. One end of the power transmission block 8 is fixedly mounted on the side wall of the nut 7, and the other end of the power transmission block 8 cooperates to pass through the first transmission through hole on the groove wall of the main suspension arm 3 and extends into the groove of the main suspension arm 3. The first transmission through hole is in the shape of a long strip hole, and the longitudinal direction of the first transmission through hole is parallel to the axis of the screw rod 5. When the motor 6 drives the screw rod 5 to rotate, it drives the nut to slide back and forth along the axial direction, thereby adjusting the height of the secondary boom 20 on the main boom 3.

[0038] Furthermore, two sets of the secondary suspension position adjustment parts are provided, and the two sets of the secondary suspension position adjustment parts are symmetrically distributed on the groove walls on both sides of the main suspension arm 3, so as to coordinately provide push-pull force to the secondary suspension arm 20, thereby improving the stability and reliability of the push-pull process.

[0039] The secondary suspension tilt angle adjustment member includes a secondary suspension tilt angle slide 10 and a second push-pull cylinder 11. The secondary suspension tilt angle slide 10 is in the shape of a rectangular groove. The outer wall width of the groove of the secondary suspension tilt angle slide 10 is smaller than the inner wall width of the groove of the main suspension arm 3. The secondary suspension tilt angle slide 10 is axially slidably embedded in the groove of the main suspension arm 3, and the groove walls on both sides of the secondary suspension tilt angle slide 10 are respectively fixedly connected to the other end of the power transmission block 8 of the two sets of secondary suspension position adjustment members. The bottom end of the second push-pull cylinder 11 is hinged to the bottom end of the groove of the secondary suspension tilt angle slide 10, and the top end of the second push-pull cylinder 11 passes through the second transmission through hole on the bottom surface of the groove of the secondary suspension tilt angle slide 10 and is hinged to the secondary suspension arm 20. Furthermore, the second push-pull cylinder 11 is a hydraulic cylinder or an electric push-pull cylinder.

[0040] After one end of the secondary arm 20 passes through the second transmission through hole, one end of the secondary arm 20 is hinged to the top end of the second push-pull cylinder 11, and the secondary arm 20 is rotatably connected to the other end of the secondary tilt slide 10 through a rotating shaft.

[0041] The top locking member includes a locking and fixing tube 12, a magnetic coil, a locking shaft and a locking auxiliary tube 13. The side wall of the locking and fixing tube 12 is fixedly arranged on the groove wall on one side of the other end of the main boom 3, and the axis of the locking and fixing tube 12 is perpendicular to the main boom 3. The magnetic coil is fixedly embedded in the spiral groove on the inner wall of the locking and fixing tube 12. The locking shaft is axially slidably embedded in the locking and fixing tube 12. The side wall of the locking auxiliary tube 13 is fixedly arranged on the groove wall on the other side of the main boom 3, and the axis of the locking auxiliary tube 13 coincides with the axis of the locking and fixing tube 12. When the magnetic coil is fed with direct current to generate a magnetic field, one end of the locking shaft will be pushed into the locking auxiliary tube 13.

[0042] It should be noted that when the lifting needs to extend the main boom 3 and the secondary boom 20 to the maximum length in combination to meet the lifting requirements: after the second push-pull cylinder 11 is retracted to the predetermined position, the axis of the secondary boom 20 tends to be parallel to the longitudinal direction of the secondary lifting tilt slide 10; then the secondary lifting position adjustment part is started to push the secondary lifting tilt slide 10 to the predetermined position at the other end of the main boom 3; finally, the top locking part is started to lock the secondary boom 20 on the main boom 3 through the locking shaft, and through the synergistic effect of the locking shaft, the first push-pull cylinder 4, the second push-pull cylinder 11 and the screw 5, the carrying capacity of the chemical tanker ship crane is improved.

[0043] When the chemical tanker crane is not in use and needs to be folded and stored on the deck 2: after the second push-pull cylinder 11 is retracted to a predetermined position, the axis of the secondary boom 20 tends to be parallel to the longitudinal direction of the secondary boom tilt slide 10; then the secondary boom position adjustment part is started to push the secondary boom tilt slide 10 to a predetermined position at the bottom end of the main boom 3, so as to shorten the common extension length of the secondary boom 20 and the main boom 3, and reduce the area of ​​the deck 2 for parking the chemical tanker crane.

[0044] The rope guide member of the crane includes a motor, a drum, a first guide rope pulley group 14, a second guide rope pulley group 15, a third guide wheel pulley group 16, a wire rope 17, a movable pulley 18 and a hook 19. The motor is fixedly arranged on the top surface of the reinforcing base, the drum is arranged on the top surface of the reinforcing base, and one end of the drum is connected to the rotating shaft of the motor. The first guide rope pulley group 14 is arranged on one end of the main boom 3, the second guide rope pulley group 15 is arranged on the other end of the main boom 3, and the third guide wheel pulley group 16 is arranged on the other end of the secondary boom 20. One end of the wire rope 17 is wound on the drum, and the other end of the wire rope 17 is fixedly connected to the other end of the secondary boom 20 after being guided by the first guide rope pulley group 14, the second guide rope pulley group 15 and the third guide wheel pulley group 16. The movable pulley 18 is disposed on the other end of the steel wire rope 17 , and the hook 19 is disposed on the movable pulley 18 to lift the object to be lifted.

[0045] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A chemical tanker crane, characterized in that: include: A reinforced base, the reinforced base being arranged on the deck of the ship to provide stable support; A boom assembly is arranged on the reinforced base, and the boom assembly includes a main boom member, a secondary boom member and a crane guide rope member. The main boom member is hinged on the reinforced base to provide support; the secondary boom member is on the main boom member and cooperates with the main boom member to provide lifting support; the crane guide rope member performs lifting operations on the main boom member and the secondary boom member to lift the object to be lifted.

2. The chemical tanker crane according to claim 1, characterized in that: The reinforced base comprises a base cylinder, the bottom end of which is arranged on the multiple decks, and the base cylinder is located in the midship position of the stern of the ship.

3. The chemical tanker crane according to claim 1 or 2, characterized in that: The main boom member includes a main boom and a first push-pull cylinder. One end of the main boom is hinged on the top surface of the reinforcement base. The bottom end of the first push-pull cylinder is hinged on the top surface of the reinforcement base. The top end of the first push-pull cylinder is hinged on the side wall of the main boom.

4. The chemical tanker crane according to claim 1 or 2, characterized in that: The secondary suspension arm member includes a secondary suspension position adjustment member, a secondary suspension inclination adjustment member, a secondary suspension arm and a top locking member. The secondary suspension position adjustment member and the top locking member are both arranged on the main suspension arm member, the secondary suspension inclination adjustment member is arranged on the secondary suspension position adjustment member, and the secondary suspension arm is arranged on the secondary suspension inclination adjustment member.

5. The chemical tanker crane according to claim 3, characterized in that: The secondary hoist position adjustment component includes a screw, a motor, a nut and a power transmission block. The screw is arranged on both ends of the main hoist arm through rotating support seats arranged at both ends. The motor is arranged on the main hoist arm, and the rotating shaft of the motor is transmission-connected to one end of the screw. The nut is fitted on the screw, one end of the power transmission block is arranged on the side wall of the nut, and the other end of the power transmission block is fitted to pass through the first transmission through hole on a groove wall of the main hoist arm.

6. The chemical tanker crane according to claim 4, characterized in that: The secondary suspension position adjusting parts are provided with multiple sets, and the multiple sets of the secondary suspension position adjusting parts are symmetrically distributed on the groove walls on both sides of the main suspension arm.

7. The chemical tanker crane according to claim 5, characterized in that: The secondary suspension inclination angle adjustment part includes a secondary suspension inclination angle slide and a second push-pull cylinder. The secondary suspension inclination angle slide is slidably embedded in the main suspension arm slot, and the secondary suspension inclination angle slide slot wall is connected to the other end of the power transmission block; the bottom end of the second push-pull cylinder is hinged to the bottom end of the secondary suspension inclination angle slide slot, and the top end of the second push-pull cylinder passes through the second transmission through hole on the bottom surface of the secondary suspension inclination angle slide slot and is hinged to the secondary suspension arm.

8. The chemical tanker crane according to claim 7, characterized in that: After one end of the secondary arm passes through the second transmission through hole, the one end of the secondary arm is hinged to the top end of the second push-pull cylinder, and the secondary arm is rotationally connected to the other end of the secondary lifting inclination slide seat through a rotating shaft.

9. The chemical tanker crane according to claim 4, characterized in that: The top locking part includes a locking and fixing tube, a magnetic coil, a locking shaft and a locking auxiliary tube. The locking and fixing tube is arranged on the groove wall at the other end of the main boom. The magnetic coil is fixedly embedded in the spiral groove on the inner wall of the locking and fixing tube. The locking shaft is axially slidably embedded in the locking and fixing tube. The locking auxiliary tube is arranged on the groove wall of the main boom.

10. The chemical tanker crane according to claim 4, characterized in that: The crane rope guide member includes a motor, a drum, a first guide rope pulley group, a second guide rope pulley group, a third guide wheel pulley group, a wire rope, a movable pulley and a hook, the motor is arranged on the top end surface of the reinforced base, the drum is arranged on the top end surface of the reinforced base, and one end of the drum is transmission-connected to the rotating shaft of the motor; the first guide rope pulley group is arranged on one end of the main boom, the second guide rope pulley group is arranged on the other end of the main boom, and the third guide wheel pulley group is arranged on the other end of the secondary boom; one end of the wire rope is wound around the drum, and the other end of the wire rope is fixedly connected to the other end of the secondary boom after being guided by the first guide rope pulley group, the second guide rope pulley group and the third guide wheel pulley group; the movable pulley is arranged on the other end of the wire rope, and the hook is arranged on the movable pulley.

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