A hydrographic ship crane with a lifting and hoisting type

Abstract

The present invention discloses a hydrological ship crane with a lifting and hoisting type, belonging to the technical field of hydrological ship cranes, including a support base, a displacement adjusting mechanism and a limiting mechanism. A rotating seat is connected to the support base by a bearing, and the middle and lower part of the rotating seat is fixedly and vertically penetrated and provided with an extension plate. The upper end of the rotating seat is connected to a boom by a shaft, and a jib is installed at the front end of the boom. The rear end of the extension plate is fixedly and vertically installed with a support frame, and a servo motor is installed on the extension plate between the support frame and the rotating seat. The shaft end of the servo motor is connected to one end of a rope winding shaft through a belt transmission group, and the rope winding shaft is connected to two support plates by bearings, and the two support plates are vertically and fixedly connected to the upper surface of the extension plate. This invention can adjust the lifting mechanism, and thus can adjust the hoisting range of the crane. In addition, through the mass of the heavy object, the rope winding structure can be limited, so as to avoid safety accidents caused by the reverse rotation of the rope winding structure.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrological ship cranes, and specifically to a hydrological ship crane for lifting and transporting by means of a lifting mechanism. Background Art

[0002] A crane is a heavy mechanical device widely used in industries, construction, ports and other fields, mainly for lifting heavy objects;

[0003] A hydrological ship is a ship specially used for hydrological measurement and research. When the hydrological ship is operating, a crane is required. The crane is installed on the deck of the hydrological ship, and then a lifting mechanism composed of a hydraulic cylinder, a lifting arm, etc. is used to lift heavy objects;

[0004] When the existing hydrological ship crane for lifting and transporting is in use, the following technical problems still exist, such as:

[0005] When the existing hydrological ship crane for lifting and transporting is in use, there is no structure for adjusting the lifting mechanism. Since the mass of the heavy object lifted by the hydrological ship is unknown, if the lifting weight range of the crane cannot be adjusted, the lifting weight range of the crane cannot be adjusted according to the mass of the heavy object;

[0006] 2. When the existing hydrological ship crane for lifting and transporting is in use, there is no structure for limiting the rope winding structure, so that during the lifting process, a safety accident may occur due to the reverse rotation of the rope winding structure;

[0007] Therefore, a hydrological ship crane for lifting and transporting is needed to solve the above problems. Summary of the Invention

[0008] The purpose of the present invention is to provide a hydrological ship crane for lifting and transporting, so as to solve the problems in the above background art that the existing hydrological ship crane for lifting and transporting does not have a structure for adjusting the lifting mechanism and does not have a structure for limiting the rope winding structure.

[0009] To achieve the above purpose, the present invention provides the following technical solutions:

[0010] A hydrological ship crane with a lifting type hoisting, comprising a support base, a displacement adjusting mechanism and a limiting mechanism. A rotating base is connected to the support base by a bearing, and the middle and lower part of the rotating base fixedly penetrates and extends a plate. The upper end of the rotating base is connected to a boom by a shaft, and a jib is installed at the front end of the boom. A support frame is fixedly installed vertically at the rear end of the extended plate, and a servo motor is installed on the extended plate between the support frame and the rotating base. The shaft end of the servo motor is connected to one end of a rope winding shaft through a belt transmission group, and the rope winding shaft is connected to two support plates by bearings, and the two support plates are vertically fixedly connected to the upper surface of the extended plate. One end of a rope is wound around the rope winding shaft, and the other end of the rope is supported at the front end of the jib after passing through a guide roller. A support slider is sleeved outside the boom, and the inner side of the support slider is connected to the outer side of the boom in a sliding connection manner. The lower end of the support slider is connected to the upper end of a telescopic cylinder, and the lower end of the telescopic cylinder is connected to the extended plate through a displacement adjusting mechanism. The rear end of the boom is connected to the inside of the support frame through a limiting mechanism, and both the displacement adjusting mechanism and the rope winding shaft are connected to the limiting mechanism.

[0011] Preferably, the guide rollers are arranged on both the boom and the jib, a through hole is arranged in the middle and rear end of the boom, and the rope penetrates through the through hole arranged on the boom.

[0012] Preferably, the displacement adjusting mechanism includes a lead screw, a mounting frame, a universal caster, a limiting plate, a limiting rod, a first spring, a gas collecting chamber and a strip hole. The strip hole is arranged at the front end of the extended plate, and the mounting frame penetrates through the strip hole. The lower surface of the mounting frame is provided with a universal caster, and a gas collecting chamber is arranged on the mounting frame. The lower end of the telescopic cylinder is connected to the inside of the gas collecting chamber, and a limiting plate is fixedly connected to the middle of the telescopic cylinder. The lower end of a limiting rod is fixedly connected to the upper surface of the mounting frame, and the upper end of the limiting rod movably penetrates above the limiting plate. A first spring nested outside the limiting rod is arranged between the mounting frame and the limiting plate. A lead screw threadedly penetrates through the middle of the mounting frame, one end of the lead screw is connected to the strip hole by a bearing, and the other end of the lead screw penetrates through the outside of the front end of the extended plate by a bearing.

[0013] Preferably, the axis of the strip hole is collinear with the axis of the lead screw, and a rocker is installed at the end of the lead screw extending outside the front end of the extended plate.

[0014] Preferably, the limiting rod is of a T-shaped structure, and the two limiting rods are symmetrically arranged about the axis of the telescopic cylinder.

[0015] Preferably, the limiting mechanism includes a gas collecting pipe, an air delivery pipe, a fixed chuck, a piston rod, an installation groove, a positioning rod, a pressure rod, a second spring, a ratchet plate and a ratchet wheel. The upper end of the support frame is fixedly installed with a gas collecting pipe, and the gas collecting pipe is connected to the gas collecting chamber through the air delivery pipe. The air delivery pipe is fixed to the side of the rotating seat through the fixed chuck. The upper end of the piston rod is slidably connected to the inside of the gas collecting pipe without a gap, and the lower end of the piston rod movably penetrates below the support frame. The lower end of the piston rod is fixedly connected to the pressure rod. The rear end of the lifting arm penetrates through the support frame. An installation groove is arranged on one side of the support frame facing the rotating seat, and a positioning rod is installed in the installation groove. The two positioning rods are connected by the pressure rod, and the pressure rod is arranged above the rear end of the lifting arm. Each positioning rod is movably penetrated by a ratchet plate, and the upper ends of the two ratchet plates are respectively fixedly connected to both ends of the pressure rod, and both ends of the pressure rod are also movably penetrated by the positioning rod. A second spring nested outside the positioning rod is arranged between the upper end of the pressure rod and the inner top end of the installation groove. The side of the ratchet plate is meshed with the ratchet wheel, and the ratchet wheel is key-connected to the rope winding shaft.

[0016] Preferably, a piston piece is arranged at the lower end of the telescopic air cylinder, and the piston piece at the lower end of the telescopic air cylinder is slidably connected to the gas collecting chamber without a gap.

[0017] Preferably, the pressure rod is of an I-shaped structure and is arranged directly below the piston rod.

[0018] Preferably, one end of the air delivery pipe is arranged near the inner top end of the gas collecting pipe, and the other end of the air delivery pipe is arranged near the inner bottom end of the gas collecting chamber.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: The hydrological ship crane with a lifting type can adjust the lifting mechanism, and thus can adjust the lifting range of the crane. In addition, through the mass of the heavy object, the rope winding structure can be limited, so as to avoid safety accidents caused by the reverse rotation of the rope winding structure.

[0020] 1. By rotating the lead screw, the position of the mounting bracket can be adjusted. During the movement of the mounting bracket, the telescopic air cylinder drives the support slider to slide on the lifting arm, so as to adjust the position of the support slider on the lifting arm. By changing the position of the support slider on the lifting arm, the lifting position of the lifting structure composed of the lifting arm and the jib can be changed, so that the weight range that the crane can lift can be changed.

[0021] 2. During the process of lifting a heavy object, based on the mass of the heavy object, the pressure exerted by the boom on the telescopic cylinder can be increased, thereby causing the telescopic cylinder to move towards the air collection chamber, achieving the effect of squeezing the gas in the air collection chamber. After the gas in the air collection chamber is squeezed, it enters the gas collection pipe through the gas transmission pipe, thus increasing the air pressure in the gas collection pipe, causing the piston rod to move downward, and then driving the pressure rod to press down the rear end of the boom together. During the process of the rear end of the boom being pressed down, the pressure rod and the ratchet plate move downward. At this time, under the action of the ratchet plate and the ratchet wheel, the rope winding shaft can only wind the rope, thereby limiting the rope winding structure and avoiding safety accidents caused by the rope winding shaft releasing the rope. Brief Description of the Drawings

[0022] Figure 1 is a front view structural schematic diagram of the present invention;

[0023] Figure 2 For the present invention Figure 1 is an enlarged structural schematic diagram of point A in the present invention;

[0024] Figure 3 is a rear view three-dimensional structural schematic diagram of the present invention;

[0025] Figure 4 is a sectional structural schematic diagram of the present invention;

[0026] Figure 5 For the present invention Figure 4 is an enlarged structural schematic diagram of point B in the present invention;

[0027] Figure 6 is a connection structural schematic diagram of the gas collection pipe and the mounting bracket of the present invention;

[0028] Figure 7 is a partial sectional connection structural schematic diagram of the present invention;

[0029] Figure 8 For the present invention Figure 7 is an enlarged structural schematic diagram of point C in the present invention.

[0030] In the figure: 1, support base; 2, rotating base; 3, boom; 4, lifting arm; 5, support slider; 6, telescopic cylinder; 7, rope; 8, guide roller; 9, servo motor; 10, belt drive group; 11, support frame; 12, gas collection pipe; 13, gas transmission pipe; 14, fixed chuck; 15, piston rod; 16, extension plate; 17, lead screw; 18, mounting bracket; 19, universal caster; 20, limit plate; 21, limit rod; 22, spring one; 23, air collection chamber; 24, strip hole; 25, mounting groove; 26, positioning rod; 27, pressure rod; 28, spring two; 29, ratchet plate; 30, ratchet wheel; 31, rope winding shaft; 32, support plate. Detailed Description of the Invention

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] Please refer to Figures 1-8 , the present invention provides the following technical solutions:

[0033] Embodiment 1:

[0034] To solve the problem that the lifting mechanism on the conventional hydrological ship crane is non-adjustable, the following technical solutions are provided. Specifically,

[0035] A hydrological ship crane for lifting and transporting includes a support base 1, a displacement adjustment mechanism, and a limit mechanism. A rotating base 2 is connected to the support base 1 by bearings, and the middle and lower parts of the rotating base 2 fixedly penetrate and extend through the extension plate 16. The upper end of the rotating base 2 is connected to a boom 3 by a shaft, and a jib 4 is installed at the front end of the boom 3. A support frame 11 is fixedly installed vertically at the rear end of the extension plate 16, and a servo motor 9 is installed on the extension plate 16 between the support frame 11 and the rotating base 2. The shaft end of the servo motor 9 is connected to one end of a rope winding shaft 31 through a belt drive group 10, and the rope winding shaft 31 is connected to two support plates 32 by bearings. And the two support plates 32 are vertically and fixedly connected to the upper surface of the extension plate 16. One end of a rope 7 is wound around the rope winding shaft 31, and the other end of the rope 7 supports the front end of the jib 4 after passing through a guide roller 8. A support slider 5 is sleeved outside the boom 3, and the inner side of the support slider 5 and the outer side of the boom 3 are connected by a sliding connection method. The lower end of the support slider 5 is connected to the upper end of a telescopic cylinder 6, and the lower end of the telescopic cylinder 6 is connected to the extension plate 16 through a displacement adjustment mechanism. The guide roller 8 is provided on both the boom 3 and the jib 4, and a through hole is provided in the middle and rear end of the boom 3, and the rope 7 penetrates through the through hole provided on the boom 3.

[0036] The displacement adjusting mechanism includes a lead screw 17, a mounting frame 18, universal casters 19, a limiting plate 20, a limiting rod 21, a first spring 22, an air collecting chamber 23, and a strip-shaped hole 24. The strip-shaped hole 24 is provided at the front end of the extension plate 16, and the mounting frame 18 penetrates through the strip-shaped hole 24. The universal casters 19 are mounted on the lower surface of the mounting frame 18, and the air collecting chamber 23 is provided on the mounting frame 18. The lower end of the telescopic cylinder 6 is connected inside the air collecting chamber 23, and the middle part of the telescopic cylinder 6 is fixedly connected with the limiting plate 20. The lower end of the limiting rod 21 is fixedly connected to the upper surface of the mounting frame 18, and the upper end of the limiting rod 21 movably penetrates above the limiting plate 20. A first spring 22 nested outside the limiting rod 21 is provided between the mounting frame 18 and the limiting plate 20. The middle part of the mounting frame 18 is threadedly penetrated by the lead screw 17, and one end of the lead screw 17 is connected by a bearing in the strip-shaped hole 24, and the other end of the lead screw 17 penetrates through the outside of the front end of the extension plate 16 by a bearing. The axis of the strip-shaped hole 24 is collinear with the axis of the lead screw 17, and a rocker is mounted at the end of the lead screw 17 extending outside the front end of the extension plate 16. The limiting rod 21 is of a T-shaped structure, and the two limiting rods 21 are symmetrically arranged about the axis of the telescopic cylinder 6. By rotating the lead screw 17, the position of the mounting frame 18 on the extension plate 16 is adjusted. During the movement of the mounting frame 18, the telescopic cylinder 6 adaptively adjusts its length. During the movement of the mounting frame 18, the support slider 5 also slides on the boom 3, so as to adjust the position where the telescopic cylinder 6 supports on the boom 3, that is, to adjust the lifting position of the boom 3, thereby changing the lifting range of the crane.

[0037] Embodiment 2:

[0038] To solve the problem that the previous hydrological ship crane cannot limit the rope winding structure, which is likely to cause safety accidents, the following technical solutions are provided. Specifically, the support frame 11 is connected to the rear end of the boom 3 through a limiting mechanism, and both the displacement adjusting mechanism and the rope winding shaft 31 are connected to the limiting mechanism.

[0039] The limiting mechanism includes a gas collecting pipe 12, a gas transmission pipe 13, a fixed chuck 14, a piston rod 15, a mounting groove 25, a positioning rod 26, a pressure rod 27, a second spring 28, a ratchet plate 29 and a ratchet wheel 30. The upper end of the support frame 11 is fixedly installed with the gas collecting pipe 12, and the gas collecting pipe 12 is connected to the gas collecting chamber 23 through the gas transmission pipe 13. The gas transmission pipe 13 is fixed to the side of the rotating seat 2 through the fixed chuck 14. The upper end of the piston rod 15 is slidably connected to the inside of the gas collecting pipe 12 without clearance, and the lower end of the piston rod 15 movably penetrates below the support frame 11. The lower end of the piston rod 15 is fixedly connected to the pressure rod 27. The rear end of the boom 3 penetrates through the support frame 11. An installation groove 25 is provided on one side of the support frame 11 facing the rotating seat 2, and a positioning rod 26 is installed in the installation groove 25. The two positioning rods 26 are connected by the pressure rod 27, and the pressure rod 27 is arranged above the rear end of the boom 3. Each positioning rod 26 is movably penetrated by a ratchet plate 29, and the upper ends of the two ratchet plates 29 are respectively fixedly connected to both ends of the pressure rod 27, and both ends of the pressure rod 27 are also movably penetrated by the positioning rod 26. A second spring 28 nested outside the positioning rod 26 is provided between the upper end of the pressure rod 27 and the inner top end of the installation groove 25. The side of the ratchet plate 29 is meshed with the ratchet wheel 30, and the ratchet wheel 30 is key-connected to the rope winding shaft 31. When the telescopic cylinder 6 extends to lift a heavy object with the rope 7, the gravity of the heavy object will be applied to the boom 3 and the jib 4, and then the telescopic cylinder 6 will be subjected to the gravity of the boom 3, the jib 4 and the heavy object, and then the telescopic cylinder 6 will move downward. During the downward movement of the telescopic cylinder 6, its lower end squeezes the gas in the gas collecting chamber 23, and then increases the air pressure in the gas collecting pipe 12 through the gas transmission pipe 13, so that the piston rod 15 drives the pressure rod 27 to press the boom 3 downward synchronously. Synchronously, the ratchet plate 29 will also move downward until the ratchet plate 29 and the ratchet wheel 30 are meshed. At this time, since the ratchet plate 29 cannot move upward, under the action of the ratchet plate 29 and the ratchet wheel 30, the rope winding shaft 31 can only wind the rope 7, so as to limit the rope winding shaft 31 and prevent the rope 7 from being released during the lifting process, resulting in a safety accident. A piston piece is provided at the lower end of the telescopic cylinder 6, and the piston piece at the lower end of the telescopic cylinder 6 is slidably connected to the gas collecting chamber 23 without clearance. The pressure rod 27 is of an I-shaped structure and is arranged directly below the piston rod 15. One end of the gas transmission pipe 13 is arranged near the inner top end of the gas collecting pipe 12, and the other end of the gas transmission pipe 13 is arranged near the inner bottom end of the gas collecting chamber 23.

[0040] The content not described in detail in this specification belongs to the prior art well known to those skilled in the art.

[0041] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lifting type hydrographic ship crane, comprising a support seat (1), a displacement adjustment mechanism and a limit mechanism, characterized in that: The support seat (1) is connected to a rotating seat (2) by a bearing, and the middle and lower parts of the rotating seat (2) are fixedly connected to an extension plate (16). The upper end shaft of the rotating seat (2) is connected to a lifting arm (3), and the front end of the lifting arm (3) is installed with a boom (4). The rear end of the extension plate (16) is fixedly and vertically installed with a supporting frame (11), and a servo motor (9) is installed on the extension plate (16) between the supporting frame (11) and the rotating seat (2). The shaft end of the servo motor (9) is connected to one end of a rope winding shaft (31) through a belt transmission group (10), and the rope winding shaft (31) is connected to two supporting plates (32) by a bearing, and the two supporting plates (32) are vertically fixedly connected to the upper surface of the extension plate (16). One end of a rope (7) is wound around (31), and the other end of the rope (7) is supported at the front end of the boom (4) after passing through a guide roller (8). The outer side of the boom (3) is sleeved with a support slider (5), and the inner side of the support slider (5) and the outer side of the boom (3) are connected in a sliding connection manner. The lower end of the support slider (5) is axially connected to the upper end of the telescopic cylinder (6), and the lower end of the telescopic cylinder (6) is connected to the extension plate (16) through a displacement adjustment mechanism. The displacement adjustment mechanism includes a screw rod (17), a mounting frame (18), a universal caster (19), a limit plate (20), a limit rod (21), a spring (22), an air collecting bin (23) and a strip hole (24). The strip hole (24) is arranged on the extension plate (16). The front end of the extension plate (16) is provided with a mounting frame (18) penetrating the strip hole (24); a universal caster (19) is installed on the lower surface of the mounting frame (18); and an air collecting bin (23) is provided on the mounting frame (18); the lower end of the telescopic cylinder (6) is connected to the inside of the air collecting bin (23); and the middle part of the telescopic cylinder (6) is fixedly connected to the limit plate (20); the upper surface of the mounting frame (18) is fixedly connected to the lower end of the limit rod (21); and the upper end of the limit rod (21) movably penetrates to the top of the limit plate (20); a spring (22) is provided between the mounting frame (18) and the limit plate (20) and is nested in the outer side of the limit rod (21); a screw rod (17) is threadedly penetrated through the middle part of the mounting frame (18); and the screw rod (17) is threadedly penetrated through the middle part of the mounting frame (18); and the screw rod (17) is threadedly inserted through the middle part of the mounting frame (18). A bearing at one end of the rod (17) is connected to the strip hole (24), and a bearing at the other end of the lead screw (17) passes through the front end outside of the extension plate (16). The support frame (11) is connected to the rear end of the lifting arm (3) through a limiting mechanism, and the displacement adjustment mechanism and the rope winding shaft (31) are both connected to the limiting mechanism. The limiting mechanism includes a gas collecting pipe (12), a gas delivery pipe (13), a fixed clamp (14), a piston rod (15), a mounting groove (25), a positioning rod (26), a pressure rod (27), a second spring (28), a ratchet plate (29) and a ratchet wheel (30). The upper end of the support frame (11) is fixedly mounted with a gas collecting pipe (12), and the gas collecting pipe (12) is connected to the gas collecting bin (23) through the gas delivery pipe (13).The gas delivery pipe (13) is fixed to the side of the rotating seat (2) through a fixing clamp (14); the upper end of the piston rod (15) is seamlessly slidably connected in the gas collecting pipe (12); the lower end of the piston rod (15) is movably penetrated to the bottom of the support frame (11); the lower end of the piston rod (15) is fixedly connected to a pressure rod (27); the rear end of the lifting arm (3) penetrates the support frame (11); a mounting groove (25) is provided on a side of the support frame (11) facing the rotating seat (2); and a positioning rod (26) is installed in the mounting groove (25); two positioning rods (26) are connected between them through a pressure rod ( 27), and the pressure rod (27) is arranged above the rear end of the boom (3), each of the positioning rods (26) is movably penetrated by a ratchet plate (29), and the upper ends of the two ratchet plates (29) are respectively fixedly connected to the two ends of the pressure rod (27), and the two ends of the pressure rod (27) are also movably penetrated by the positioning rod (26), and a spring (28) is arranged between the upper end of the pressure rod (27) and the inner top end of the mounting groove (25) and is nested in the outer side of the positioning rod (26), and the side of the ratchet plate (29) is meshedly connected with a ratchet wheel (30), and the ratchet wheel (30) is key-connected to the rope winding shaft (31).

2. A lifting type hydrographic ship crane according to claim 1, characterized in that: The guide roller (8) is arranged on both the boom (3) and the suspension arm (4), and a through hole is arranged at the middle and rear ends of the boom (3), and the rope (7) passes through the through hole arranged on the boom (3).

3. A lifting type hydrographic ship crane according to claim 2, characterized in that: The axis of the strip-shaped hole (24) is colinear with the axis of the screw rod (17), and a rocker is installed at the end of the screw rod (17) extending out of the front end outside of the extension plate (16).

4. The lifting type hydrographic ship crane according to claim 3 is characterized in that: The limiting rod (21) is a T-shaped structure, and the two limiting rods (21) are symmetrically arranged about the axis of the telescopic cylinder (6).

5. The lifting type hydrographic ship crane according to claim 4, characterized in that: A piston plate is provided at the lower end of the telescopic cylinder (6), and the piston plate at the lower end of the telescopic cylinder (6) is seamlessly slidably connected to the air collecting bin (23).

6. The lifting type hydrographic ship crane according to claim 5, characterized in that: The pressure rod (27) is an I-shaped structure, and the pressure rod (27) is arranged directly below the piston rod (15).

7. The lifting type hydrographic ship crane according to claim 6, characterized in that: One end of the gas delivery pipe (13) is arranged at a position close to the top end of the gas collecting pipe (12), and the other end of the gas delivery pipe (13) is arranged at a position close to the bottom end of the gas collecting bin (23).

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