CN111847225A - A dismouting axle device for marine floating crane lifting hook - Google Patents

Abstract

The invention relates to a shaft dismounting device for a maritime work floating crane lifting hook, which comprises a connecting shaft (2) used for connecting an upper lifting hook and a lower lifting hook, a shaft end clamping plate (7) used for axially fixing the connecting shaft (2) and preventing the connecting shaft (2) from rotating, a support (6) used for moving the connecting shaft (2), and a connecting shaft moving device (5) used for driving the connecting shaft (2) to enter and exit in the support (6). Compared with the prior art, the shaft dismounting device is fixed on the lower lifting hook cross beam, dismounting is not needed, dismounting of the connecting shaft can be achieved by manually operating the hand wheel, and the shaft dismounting device has the advantages of convenience, rapidness, safety, reliability and the like.

Description

A dismouting axle device for marine floating crane lifting hook

Technical Field

The invention relates to a shaft dismounting device, in particular to a shaft dismounting device for a maritime work floating crane lifting hook.

Background

The marine floating crane is mainly used for offshore rescue, hoisting, salvaging and other offshore operations. With the large-scale construction engineering, the marine floating crane is also often used for the construction of large-scale engineering, such as bridge construction, marine platform assembly and installation, and the like. The diversification of operation objects and the increase of operation contents put more demands on the operation mode of the marine floating crane.

In a conventional marine floating crane, the main hook is usually provided with one main hook or two main hooks arranged side by side. When the floating crane mainly takes salvaging as a main part, a four-claw main hook is configured. The member can be hung on four claws of the lifting hook by four hoisting steel wire ropes. After the component is lifted, the component can horizontally rotate so as to be convenient for alignment. When the floating crane is mainly installed, two side-by-side two-claw main hooks are generally configured to realize the turning of the component. At the moment, after the component is lifted, the component cannot horizontally rotate, otherwise, the lifting steel wire ropes of the two lifting hooks are wound together. In order to expand the operation content of the marine floating crane and fully exert the economic performance of the marine floating crane, some marine floating cranes propose a mode of combining two side-by-side lifting hooks and a single lifting hook. Namely, a four-claw main hook is hung below two side-by-side two-claw lifting hooks. The floating crane can change the type of the lifting hook at any time according to the operation requirement, and the operation requirement is met (as shown in figures 20 and 21).

However, the lifting capacity of the marine floating crane is often very large, even up to ten thousand tons, so the self weight of the lifting hook is also large; during offshore operation, the wind and wave are large, the environment is poor, the operation condition is also poor, and the offshore operation tool often cannot have enough tools, enough manpower and safe power. Thus. How to realize the assembly and disassembly of the lifting hook becomes a problem which needs to be solved.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a shaft dismounting device for a maritime work floating crane hook.

The purpose of the invention can be realized by the following technical scheme:

the utility model provides a dismouting axle device for marine floating crane lifting hook which characterized in that, is including the connecting axle that is used for connecting upper and lower lifting hook, carries out axial fixity and prevents connecting axle pivoted axle head cardboard to the connecting axle, supplies the support that the connecting axle removed and the connecting axle mobile device of drive connecting axle business turn over in the support.

Furthermore, the upper and lower lifting hooks comprise an upper lifting hook and a lower lifting hook, the support is fixed on the lower lifting hook cross beam, and when the lifting hook is installed, the connecting shaft extends out of the support under the action of the connecting shaft moving device, is inserted into and fixed with a shaft hole on the lifting hook at the bottom of the upper lifting hook and a shaft hole on the lower lifting hook cross beam, and realizes the connection of the upper and lower lifting hooks; when the lifting hook is detached, the connecting shaft retracts into the support under the action of the connecting shaft moving device, and the detachment of the lifting hook is realized.

Furthermore, the connecting shaft moving device comprises a T-shaped sleeve, a screw rod and a hand wheel, wherein the T-shaped sleeve is fixed on the connecting shaft, one end of the screw rod is inserted into the T-shaped sleeve, and the other end of the screw rod is connected with the hand wheel.

Furthermore, the center of the T-shaped sleeve is provided with a central threaded hole, the central threaded hole is provided with an internal thread matched with the external thread of the screw, and the T-shaped sleeve is adopted to avoid machining the threaded hole in the shaft, so that the machining is simpler and more convenient. The length of the screw thread on the screw is larger than the maximum moving length of the connecting shaft, so that the connecting shaft can be assembled and disassembled;

the connecting part of the screw rod and the hand wheel is provided with a connecting key groove which is used for installing a connecting key fixed on the hand wheel, so that the screw rod rotates along with the rotation of the hand wheel.

Further, the connecting shaft center be equipped with the round hole that supplies the screw rod to remove, this round hole's effect does: firstly, in the moving process of the shaft, the screw rod can pass through the hole, so that the position of the hand wheel cannot be changed along with the movement of the shaft, namely the appearance of the whole shaft mounting and dismounting device cannot be changed; secondly, the hole is arranged at the right center of the shaft, so that the weight of the shaft can be reduced on the basis of ensuring the strength of the shaft. And two vertical clamping plate grooves are formed in one side of the connecting shaft and matched with the shaft end clamping plate, and T-shaped threaded sleeve fixing grooves are formed in the other side of the connecting shaft and matched with the T-shaped sleeves.

Furthermore, the end face of one end of the connecting shaft is conical, and plays a role in guiding when the shaft moves towards the left side, namely when the upper lifting hook and the lower lifting hook are combined, so that the shaft hole is convenient to enter, and the lifting hook is more convenient to assemble; a guide key fixing groove is also arranged on the end surface of the other end, and a guide key is arranged in the guide key fixing groove

Furthermore, the shaft end clamping plates are two semicircular plates matched with the clamping plate grooves on the connecting shaft, and fixing bolts are arranged along the circumference, so that the number of the fixing bolts is increased, and the safety of shaft end clamping plates for shaft fixing is ensured;

the guide key is fixed on the connecting shaft and inserted into the guide key groove correspondingly arranged in the support, the guide key can only move in the key groove when the shaft is assembled and disassembled, and the shaft cannot rotate due to the constraint of the key groove, so that the connecting shaft is ensured to do linear motion along the axis, and the guide key also plays a role in rotation stopping when the connecting shaft is connected with the upper lifting hook and the lower lifting hook in a working state.

Furthermore, the support comprises a left side fixing plate, a right side fixing plate, a shaft storage cylinder and reinforcing rib plates, wherein the left side fixing plate and the right side fixing plate are respectively fixed on two sides of the shaft storage cylinder, and the left side fixing plate is connected with the lower hook cross beam so as to fix the whole shaft mounting and dismounting device on the lower hook cross beam; the right side fixed plate is connected with the end cover, the end cover is used for supporting the screw rod, and the reinforcing rib plates are arranged on the periphery of the outer side of the shaft storage cylinder so as to improve the strength of the cylinder.

Furthermore, at least two guide key grooves are formed in the inner circumference of the shaft storage cylinder and matched with the guide keys.

Further, the diameter of the shaft storage cylinder is slightly larger than that of the connecting shaft, so that the connecting shaft can move in the shaft storage cylinder; the length of the shaft storage cylinder is larger than the maximum moving distance of the connecting shaft, and the shaft can be stored in the cylinder after being detached.

Compared with the prior art, the invention has the following beneficial effects:

(1) the dismounting shaft device is fixed on the lower lifting hook cross beam and does not need to be dismounted; when the connecting shaft is detached, the connecting shaft is stored in the shaft detaching and assembling device, the hoisting, storage and the like of the connecting shaft do not need to be considered, and the device is convenient and quick.

(2) The invention can realize the disassembly and assembly of the connecting shaft by manually operating the hand wheel without additional power, has no requirements on the operation environment and conditions, and meets the requirements of offshore construction.

(3) According to the invention, the guide conical surface is arranged on the left side of the connecting shaft, so that the shaft can be guided to be installed, and the alignment error of the upper lifting hook and the shaft hole of the lower lifting hook beam can be compensated.

(4) The guide key is matched with the connecting shaft and the support, so that the connecting shaft can be guided to move left and right along the axis without rotating, and the rotation stopping effect can be achieved under the working state of the connecting shaft.

(5) According to the invention, the center of the connecting shaft is provided with a round hole for the screw to pass through, and the connecting shaft is provided with the T-shaped sleeve, the guide key and the guide key groove in the support for the guide key to walk, so that when the hand wheel rotates, the connecting shaft moves in the support, and the hand wheel cannot move along with the connecting shaft, thereby ensuring that the appearance of the whole shaft dismounting device cannot be changed; the round hole can also reduce the weight of the connecting shaft on the basis of ensuring the strength of the connecting shaft.

(6) The invention adopts the method that the T-shaped sleeve and the screw form the thread pair, thereby reducing the processing amount of the connecting shaft. When the threaded connection is abraded due to long-term use, only the T-shaped sleeve can be replaced, the connecting shaft serving as a main bearing part can be reserved, and the maintenance cost is reduced.

(7) The shaft end clamping plate adopts the form of two semicircular plates, so that the number of fixing bolts can be increased, the safety of the connecting shaft in work is ensured, and the requirement of large load in offshore operation is met.

(8) The support is also provided with the reinforcing rib plate, so that the strength of the support is improved, and the support is safer and more reliable.

Drawings

FIG. 1 is a schematic structural view of a shaft dismounting device for a marine floating crane hook according to the present invention;

FIG. 2 is a view showing the assembly and disassembly shaft device for the marine floating crane hook according to the present invention;

FIG. 3 is a B-direction drawing showing a shaft mounting and dismounting device for a marine floating crane hook according to the present invention;

FIG. 4 is a sectional view taken along line C-C of a shaft assembly for the marine floating crane hook of the present invention;

FIG. 5 is a sectional view taken along line D-D of a shaft assembly for the marine floating crane hook of the present invention;

FIG. 6 is a schematic view of a shaft connecting mechanism of the present invention for assembling and disassembling a marine floating crane hook;

FIG. 7 is a schematic view of a connecting shaft of the dismounting shaft device for the marine floating crane hook according to the present invention shown in the E-direction;

FIG. 8 is a sectional view taken along line F-F of the shaft assembly connecting shaft for the marine floating crane hook according to the present invention;

FIG. 9 is a schematic view of the pedestal of the present invention for the dismounting shaft device of the marine floating crane hook;

FIG. 10 is a sectional view taken along line G-G of the pedestal of the dismounting shaft device for a marine floating crane hook according to the present invention;

FIG. 11 is a sectional view taken along line H-H of the mounting and dismounting shaft device for a marine floating crane hook according to the present invention;

FIG. 12 is a front view of the guide key of the shaft assembly for marine floating crane hook of the present invention;

FIG. 13 is a cross-sectional view of the guide key of the dismounting shaft device for marine floating crane hook of the present invention;

FIG. 14 is a front view of the T-shaped sleeve of the de-coupling shaft device for a marine floating crane hook of the present invention;

FIG. 15 is a cross-sectional view of the T-shaped sleeve of the de-coupling shaft assembly for a marine floating crane hook of the present invention;

FIG. 16 is a schematic view of a screw structure of a shaft mounting and dismounting device for a marine floating crane hook according to the present invention;

FIG. 17 is a front view of the end cap of the dismounting shaft device for the marine floating crane hook of the present invention;

FIG. 18 is a cross-sectional view of the end cap of the de-coupling shaft assembly for the marine floating crane hook of the present invention;

FIG. 19 is a view showing a state where the shaft is pulled out of the shaft mounting and dismounting device for a marine floating crane hook according to the present invention;

FIG. 20 is a schematic structural view of a marine floating crane hook set equipped with the dismounting shaft device for a marine floating crane hook according to the present invention;

FIG. 21 is a schematic structural view of a marine floating crane hook set separated after a connecting shaft is pulled out by the shaft dismounting device for a marine floating crane hook according to the present invention,

in the figure, an upper hook 1, a connecting shaft 2, a lower hook beam 3, a lower hook 4, a connecting shaft moving device 5, a support 6, a shaft end clamping plate 7, a clamping plate groove 201, a T-shaped threaded sleeve fixing groove 202, a T-shaped threaded sleeve fixing bolt hole 2021, a guide key fixing groove 203, a guide key fixing threaded hole 2031, a round hole 204, a screw 501, a connecting key 502, a connecting key groove 5021, a hand wheel 503, an end cover 504, a second bolt 5041, a T-shaped sleeve 505, a first bolt 5051, a bolt hole 5052, a central threaded hole 5053, a guide key 506, a fifth bolt 5061, a bolt hole 5062, a left fixing plate 601, a fourth bolt 6011, a right fixing plate 602, a shaft storage cylinder 603, a guide key groove 6031, a reinforcing rib plate 604 and a third bolt 701.

Detailed Description

The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

Examples

A shaft assembling and disassembling device for a maritime work floating crane hook is shown in figures 1-5 and comprises a connecting shaft 2 used for connecting an upper hook and a lower hook, a shaft end clamping plate 7 and a third bolt 701 for axially fixing the connecting shaft and preventing the connecting shaft from rotating, a support 6 and a fourth bolt 6011 for fixing the whole shaft disassembling device on a lower hook cross beam 3, a guide key 506 and a fifth bolt 5061 which are fixed on the shaft and play a role in guiding the movement of the shaft, a screw 501, a T-shaped sleeve 505 and a first bolt 5051 which form thread pairs mutually, an end cover 504 and a second bolt 5041 which are used for supporting the screw, a hand wheel 503 used for operating, a connecting key 502 which enables the screw to rotate along with the hand wheel, and the structure of the end cover 504 is shown in figures 17-18.

As shown in fig. 2, in consideration of the large hoisting load of the marine floating crane, the load accompanying the movement of the ship during the offshore operation is also large. The shaft end clamping plates 7 are two semicircular plates, and third bolts 701 are arranged along the circumference, so that the number of the bolts is increased, and the safety of shaft end clamping plates for shaft fixing is ensured.

As shown in fig. 6-8, the center of the connecting shaft has a circular hole 204. The round hole has the following functions: firstly, in the moving process of the shaft, the screw rod can pass through the hole, so that the position of the hand wheel cannot be changed along with the movement of the shaft, namely the appearance of the whole shaft mounting and dismounting device cannot be changed; secondly, the hole is arranged at the right center of the shaft, so that the weight of the shaft can be reduced on the basis of ensuring the strength of the shaft.

Two vertical clamping plate grooves 201 are formed in the left side of the connecting shaft to be matched with the shaft end clamping plate 7. The left end face of the shaft is a conical A, and the shaft plays a role in guiding when moving to the left side, namely the upper lifting hook and the lower lifting hook are combined, so that the lifting hook can conveniently enter the shaft hole, and the lifting hook is more convenient to assemble.

The center of the right end face of the connecting shaft is provided with a T-shaped thread bush fixing groove 202 for fixing the T-shaped bush 505, and a T-shaped thread bush fixing bolt hole 2021. A guide key fixing groove 203 and a guide key fixing threaded hole 2031 for fixing the guide key 506 are respectively formed above and below the right end face, and the structure of the guide key 506 is as shown in fig. 12 to 13.

As shown in fig. 9-11, the support member 204 is formed by welding and processing a left fixing plate 601, a right fixing plate 602, a shaft storage cylinder 603 and a reinforcing rib plate 604. As shown in fig. 2, the left fixing plate 601 is connected to the lower hook beam 3 by a fourth bolt 6011 to fix the whole assembly/disassembly shaft device to the lower hook beam; the right fixation plate 602 is attached to the end cap 504 to provide support for the screw 501. The diameter of the shaft storage cylinder 603 is slightly larger than the connecting shaft 2 so that the connecting shaft can move inside; the length of the connecting shaft is larger than the maximum moving distance of the connecting shaft, and the connecting shaft can be stored in the storage shaft cylinder after being detached. The upper and lower parts of the shaft storage cylinder are provided with two guide key slots 6031 of the guide keys 506, which are respectively matched with the guide keys. When the shaft is assembled and disassembled, the guide key can only move in the guide key groove, and the shaft cannot rotate due to the constraint of the guide key groove, so that the linear motion of the shaft along the axis is ensured. And when the connecting shaft is connected with the upper and lower lifting hooks in a working state, the guide key also plays a role in stopping rotation. When the connecting shaft is detached, the connecting shaft 2 is stored in the shaft storage cylinder 603, and in order to ensure that the cylinder does not deform under the weight of the shaft, reinforcing rib plates 604 are arranged around the outer side of the shaft storage cylinder 603 to improve the strength of the shaft storage cylinder.

As shown in fig. 2 and fig. 14-15, a central threaded hole 5053 is formed in the T-shaped sleeve 505 to cooperate with the screw to form a thread pair, and bolt holes 5052 are formed around the T-shaped sleeve to cooperate with the first bolt 5051 to be fixed on the connecting shaft 2. The T-shaped sleeve is used for avoiding the processing of a threaded hole in the shaft, so that the processing is simpler and more convenient.

As shown in fig. 16, the screw 501 is externally threaded to form a thread pair with the T-shaped sleeve. The length of the thread is larger than the maximum moving length of the connecting shaft, so that the connecting shaft can be assembled and disassembled. A connecting key groove 5021 is formed at the connecting position of the right side of the screw 501 and the hand wheel 503 and used for installing the connecting key 502, so that the screw rotates along with the rotation of the hand wheel.

In the specific operation process:

(1) when the upper and lower hooks need to be disassembled and separated

The third bolt 701 is unscrewed, the shaft end clamping plate 7 is detached, the hand wheel 503 is rotated, the screw 501 and the T-shaped sleeve 505 move mutually to drive the connecting shaft 2 to move towards the right side, the screw enters the round hole 204 in the connecting shaft, the guide key 506 can ensure that the connecting shaft moves towards the right side along the guide key groove 6031 of the support 6 and cannot rotate, and when the left end face of the connecting shaft moves towards the right side and is withdrawn from the upper lifting hook 1, the hand wheel operation can be stopped. At this time, the lifting wire rope of the floating crane is lifted, and the upper lifting hook 1 and the lower lifting hook 4 can be separated from each other, as shown in fig. 19. The connecting shaft 2 is stored inside a support 6 which is mounted on the lower hook beam 3, and the shaft dismounting device does not need to be dismounted.

(2) When the upper and lower hooks need to be assembled

The floating crane plays to rise wire rope and descends, make the shaft hole of going up lifting hook 1 aim at with the shaft hole on the lower lifting hook crossbeam 3, the left end conical surface A of connecting axle 2 can guide the connecting axle and get into the shaft hole, reverse rotation hand wheel 503, screw rod 501 and T shape cover 505 reciprocal motion, it moves to drive connecting axle 2 toward the left side, the screw rod withdraws from the inside round hole 204 of connecting axle, guide key 506 can guarantee that the connecting axle moves and can not rotate toward the left side along the direction keyway 6031 of support 6, after the left cardboard groove 201 of connecting axle appears completely, can stop the hand wheel operation, the axle head cardboard 7 is loaded onto, screw up third bolt 701, it accomplishes with lower lifting hook 4 equipment to go up lifting hook 1 this moment.

Claims (10)

1. The utility model provides a dismouting axle device for marine floating crane lifting hook which characterized in that, including connecting axle (2) that are used for connecting upper and lower lifting hook, carry out axial fixity and prevent connecting axle (2) pivoted axle head cardboard (7) to connecting axle (2), support (6) that supply connecting axle (2) to remove and connecting axle mobile device (5) of drive connecting axle (2) business turn over in support (6).

2. The dismounting shaft device for the marine floating crane hook according to claim 1, characterized in that the upper and lower hooks comprise an upper hook (1) and a lower hook (4), the support (6) is fixed on the lower hook beam (3), and during installation, the connecting shaft (2) extends out of the support (6) under the action of the connecting shaft moving device (5) and is inserted into and fixed with the shaft hole on the hook at the bottom of the upper hook (1) and the shaft hole on the lower hook beam (3) to realize the connection of the upper and lower hooks; when the lifting hook is detached, the connecting shaft (2) retracts into the support (6) under the action of the connecting shaft moving device (5), so that the detachment of the lifting hook is realized.

3. A dismounting shaft device for a maritime work floating crane lifting hook according to claim 1, characterized in that the connecting shaft moving device (5) comprises a T-shaped sleeve (505), a screw rod (501) and a hand wheel (503), wherein the T-shaped sleeve (505) is fixed on the connecting shaft (2), one end of the screw rod (501) is inserted into the T-shaped sleeve (505), and the other end is connected with the hand wheel (503).

4. The dismounting shaft device for the marine floating crane lifting hook as claimed in claim 3, characterized in that the center of the T-shaped sleeve (505) is provided with a central threaded hole (5053), the central threaded hole (5053) is provided with an internal thread matched with the external thread of the screw rod (501), and the length of the thread on the screw rod (501) is greater than the maximum moving length of the connecting shaft (2);

a connecting key groove (5021) is formed in the connecting position of the screw rod (501) and the hand wheel (503) and used for installing a connecting key (502) fixed on the hand wheel (503) so that the screw rod (501) rotates along with the rotation of the hand wheel (503).

5. A shaft assembly for a marine floating crane hook as claimed in claim 3, wherein the connecting shaft (2) has a circular hole (204) at its center for the movement of the screw (501), and has two perpendicular clamping grooves (201) on one side for matching with the clamping plate (7) at the shaft end and a T-shaped thread sleeve fixing groove (202) on the other side for matching with the T-shaped sleeve (505).

6. The shaft device for disassembling and assembling a maritime work floating crane lifting hook according to claim 5, characterized in that the end surface of one end of the connecting shaft (2) is conical so as to facilitate the connecting shaft to be inserted into the upper and lower lifting hooks, the end surface of the other end is further provided with a guide key fixing groove (203), and a guide key (506) is installed in the guide key fixing groove (203).

7. The shaft dismounting device for the maritime work floating crane lifting hook according to claim 6, characterized in that the shaft end clamping plates (7) are two semicircular plates matched with the clamping plate grooves (201) on the connecting shaft (2);

the guide key (506) is fixed on the connecting shaft (2) and inserted into a guide key groove (6031) correspondingly arranged in the support (6), so that the connecting shaft (2) is ensured to do linear motion along the axis.

8. The dismounting shaft device for the maritime work floating crane lifting hook according to claim 2, characterized in that the support (6) comprises a left fixing plate (601), a right fixing plate (602), a shaft storage cylinder (603) and reinforcing rib plates (604), the left fixing plate (601) and the right fixing plate (602) are respectively fixed on two sides of the shaft storage cylinder (603), wherein the left fixing plate (601) is connected with the lower lifting hook cross beam (3), the right fixing plate (602) is connected with the end cover (504), and the reinforcing rib plates (604) are arranged around the outer side of the shaft storage cylinder (603).

9. A dismounting shaft device for marine floating crane hook according to claim 8, characterized in that the inner circumference of said shaft storage cylinder (603) is provided with at least two guiding keyways (6031) for cooperating with said guiding keys (506).

10. A dismounting shaft device for a maritime work floating crane lifting hook according to claim 8, characterized in that the diameter of the shaft storage cylinder (603) is larger than the diameter of the connecting shaft (2), and the length of the shaft storage cylinder (603) is larger than the maximum moving distance of the connecting shaft (2).

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