CN201485206U - A chain-type roller slewing support device installed on a heavy-duty floating crane - Google Patents

Abstract

The utility model discloses a chain-type roller slewing support device installed on a heavy-duty floating crane. The slewing support device includes an upper slewing support part and a lower anti-roll support part. Roller support device, the support surface of the lower support part is provided with a revolving guide rail, and the reverse side of the support surface is provided with an anti-roll guide rail corresponding to the revolving guide rail; the upper revolving part is rotatably placed on the lower support part through a chain roller slewing support device on the revolving guide rail, and is rotatably placed on the anti-roll guide rail of the lower support part through the anti-roll support device. The slewing support structure of the large-scale floating crane of the utility model not only has the basic functions of the existing models, including support and slewing, the upper structure of the whole machine slews along the track, 360° full slewing, the lifting capacity is super large, and it can lift several thousand tons or even 10,000 tons at a time It can carry out functions such as carrying out heavy objects at sea, and allowing the ship to tilt to a certain extent, which greatly improves the efficiency of offshore operations, and also improves the economic benefits of floating cranes.

Description

A chain-type roller slewing support device installed on a heavy-duty floating crane

technical field

The utility model relates to a chain-type slewing support device, in particular to a chain-type slewing support device for heavy-duty floating cranes.

Background technique

At present, the rotary operation of the floating crane is used by the slewing support device to support the rotary part of the floating crane. The existing heavy-duty floating cranes have the structure weight of the rotary device is too large, or the structure is huge, and the center of gravity is too high, so there must be enough supporting rollers , otherwise it cannot withstand the lifting capacity of thousands of tons or even 10,000 tons by the floating crane. Such a structure causes waste of materials and directly affects the cost of the floating crane.

Existing slewing support devices mainly contain two major categories: column type and turntable type. The turntable type includes support roller type (also known as trolley type) with few fulcrums, multi-fulcrum roller jacket type and rolling bearing type. Refer to Figure 5 and Figure 6 in the accompanying drawings, Figure 5 is a dense multi-row roller type slewing bearing, which has a medium number of wheels arranged on the same length, but the structural height is low; Figure 6 is a trolley-type slewing bearing, which is arranged on the same length Highest number of wheels, medium construction height, but short contact line length. Most of the floating crane designs adopt the turntable slewing support method, and the large-tonnage floating crane often adopts the multi-pivot roller jacket type. The height of the turntable in this form is not high, which reduces the position of the center of gravity and ensures the stability of the structure. . Therefore, at present, there are usually two ways to realize the slewing operation of the full-slewing floating crane. One is to use the slewing balance beam trolley to realize the slewing lifting operation, and the second is to use a multi-row roller rotating support device to realize the heavy-duty slewing of the floating crane. The first type is due to the gap between the hinge points of the slewing balance beam trolley and the high center of gravity, resulting in large swaying of the floating crane, which affects the safety of offshore operations; while the second type adopts a multi-row slewing support device without balance beams, using multiple rings Rails and densely covered multiple wheels support the weight of tens of thousands of tons of rotating upper part.

With the rapid development of marine heavy equipment technology towards large-scale and high-tech, heavy-duty floating cranes are also developing towards large-scale and high-efficiency. In order to meet the needs of the international development situation and new technology development; the existing heavy-duty slewing operation shows the following characteristics: first: the heavy-duty floating boom frame has a large pitching angle; second: the lifting weight is super large; third: the entire boom The weight of the frame and the upper structure and the weight of the heavy objects must realize full-slewing operations. Fourth: floating cranes require offshore or even deep-sea operations and global navigation. This requires that the slewing ring of the floating crane can bear huge weight, not only to bear such a weight, but also to support these weights for slewing, and to realize operations under various harsh working conditions at sea. Therefore, the supporting rollers of heavy-duty floating cranes must bear sufficient pressure, which will inevitably lead to a large number of rollers, excessive weight of the slewing bearing structure, or too large slewing bearing structure and high center of gravity, which will affect the overall stability of the floating crane and the stability of the ship. As a result, the cost of heavy-duty floating cranes is increased.

Utility model content

The utility model overcomes the above-mentioned heavy-duty floating crane with a large number of supporting rollers, the weight of the slewing support structure is too large, or the slewing support structure is too large and the center of gravity is too high, which affects the overall stability of the floating crane and the stability of the ship, resulting in heavy floating cranes. Some disadvantages of increased lifting costs, but to provide a rotating support structure that does not require dense rows of rollers when lifting heavy objects, which greatly saves the weight of the heavy-duty floating crane rotating structure, and does not need a few support structures of the balance beam type, which greatly reduces The height of the center of gravity of the floating crane is a chain-type roller slewing bearing device that improves the supporting efficiency of the heavy-duty slewing bearing structure.

In order to achieve the above object, the utility model is realized through the following technical solutions:

A chain-type roller slewing support device installed on a heavy-duty floating crane, the slewing support device includes an upper slewing support part and a lower anti-hook support part, and the slewing support device also includes a chain-type roller slewing support device and an anti-rolling support device , the support surface of the lower support part is provided with a slewing support guide rail, and the reverse side of the support surface is provided with an anti-rolling guide rail corresponding to the slewing guide rail; On the rotary guide rail of the lower support part;

The chain-type roller slewing bearing device includes pressure rollers, pressure roller brackets, and pressure roller chains, and the pressure roller brackets are connected in sequence to form a pressure roller slewing bearing; guide rollers are arranged along the outer side of the pressure roller slewing bearing Move the inner track of the pressure-bearing rollers, the pressure-bearing rollers are sequentially connected through the pressure-bearing roller chains to form a pressure-bearing roller belt, and placed on the inner track of the pressure-bearing rollers, and the chain-type roller slewing bearing device is placed under the pressure-bearing roller belt On the rotary guide rail on the support part;

The anti-hook support device includes anti-hook rollers, anti-hook roller brackets, and anti-hook roller chains. The anti-hook roller brackets are connected in sequence to form anti-hook roller slewing bearings, which are fixedly connected with the upper turning part and run along the anti-hook roller slewing bearings. The outer side of the guide roller is provided with a guide roller to move the inner track of the anti-hook roller. The anti-hook roller is sequentially connected through the anti-hook roller chain to form an anti-hook roller belt, and is placed on the inner track of the anti-hook roller. The chain roller slewing bearing device passes through The anti-hook roller belt is placed on the anti-roll guide rail on the lower support part.

The chain roller slewing bearing device of this heavy-duty floating crane, through the joint action of the upper slewing bearing part and the lower anti-rolling bearing part, supports the huge structural self-weight and super large lifting capacity of the heavy-duty floating crane, in which the upper slewing bearing part directly bears the load from the The pressure on the upper part, while the lower anti-rolling support provides greater torque for the lifting of the floating crane through the form of an anti-hook; both the upper slewing support and the lower anti-rolling support adopt the above-mentioned patented chain roller slewing support device, Due to the innovative structure and characteristics of the chain roller slewing bearing, such as small distance between rollers, wide roller tread, chain rotation and rolling, etc., the bearing capacity of the new chain roller slewing bearing is stronger.

The slewing support structure of the large-scale floating crane of the utility model not only has the basic functions of the existing models, including support and slewing, the upper structure of the whole machine slews along the track, 360° full slewing, the lifting capacity is super large, and it can lift several thousand tons or even 10,000 tons at a time It can carry out functions such as heavy objects and offshore operations, and it can realize continuous slewing operation without stopping the slewing when lifting heavy objects, and allows the ship to tilt to a certain extent, which greatly improves the efficiency of offshore operations and also improves the economic benefits of floating cranes .

Description of drawings

The utility model is described in detail below in conjunction with accompanying drawing and specific embodiment;

Figure 1 is a schematic diagram of the structure of the bearing roller slewing bearing.

Fig. 2 is a B-B sectional view in Fig. 1 .

Fig. 3 is a structural schematic diagram of a floating crane in the prior art.

Fig. 4 is a sectional view of A-A in Fig. 3 .

Fig. 5 is a schematic diagram of the structure of the densely distributed multi-row roller type slewing bearing in the prior art.

Figure 6 is a schematic diagram of the structure of the trolley-type slewing bearing.

Figure 7 is a schematic diagram of the anti-roll support structure.

Fig. 8 is a sectional view of C-C in Fig. 7 .

Detailed ways

In order to make the technical means, creative features, goals and effects achieved by the utility model easy to understand, the utility model will be further elaborated below in conjunction with specific illustrations.

In order to solve the problem of large number of heavy-duty floating crane supporting rollers, excessive weight of the slewing bearing structure, or too large slewing bearing structure and high center of gravity, which will affect the overall stability of the floating crane and the stability of the ship, resulting in an increase in the cost of the heavy-duty floating crane The disadvantage is to provide a rotating support structure that does not require dense rows of rollers when lifting heavy objects, which greatly saves the weight of the rotating structure of the heavy floating crane and reduces the height of the center of gravity of the floating crane. The chain roller rotation installed on the heavy floating crane device, it is realized by the following technical solutions:

A chain-type roller slewing support device for a heavy-duty floating crane, the slewing support device includes an upper slewing support part and a lower anti-roll support part, as shown in Figures 3 and 4: the slewing device also includes a chain-type roller slewing support device and an anti-roll support part The supporting device 33 is provided with a rotary guide rail 6 on the support surface of the lower support part, and an anti-roll guide rail 336 corresponding to the rotary guide rail 6 is provided on the opposite side of the support surface; On the slewing guide rail 6 of the lower support part, it is rotatably placed on the anti-roll guide rail 336 of the lower support part through the anti-roll support device 33; as shown in Figures 1 and 2: the chain roller slewing support device includes pressure roller 1 The pressure-bearing roller bracket 2, the pressure-bearing roller chain 4, and the pressure-bearing roller bracket 2 are sequentially connected to form a pressure-bearing roller slewing bearing 31, which is fixedly connected with the upper turning part, and a guide roller moving bearing is provided along the outer side of the pressure-bearing roller slewing bearing 31. The pressure roller inner track 5 and the pressure roller 1 are sequentially connected through the pressure roller chain plate 4 to form a pressure roller belt 7, which is placed on the pressure roller inner track 6, and the chain roller slewing bearing device is arranged through the pressure roller belt 7 On the rotary guide rail 6 on the lower support part.

As shown in Figure 7 and Figure 8: the anti-roll support device 33 includes an anti-hook roller 331, an anti-hook roller bracket 332, and an anti-hook roller chain 333, and the anti-hook roller bracket 332 is connected in turn to form an anti-hook roller slewing bearing 300, which is connected with the upper The rotary part is fixedly connected, along the outer side of the antihook roller slewing bearing 300, there is a guide roller to move the antihook roller inner track 334, and the antihook rollers 331 are sequentially connected by the antihook roller chain 333 to form an antihook roller belt 335, which is placed on the antihook 334 on the inner track of the roller, the chain type roller slewing support device is placed on the anti-rolling guide rail 336 on the lower support part through the anti-hook roller belt 335, and the rotary guide rail 6 and the anti-rolling guide rail 336 are concentric circles.

The internal operation principle and detailed operation process of this device: the pressure roller 1 in the chain roller slewing bearing device is placed in turn on the antihook roller bracket 2 on the customized track of the pressure roller slewing bearing 31, and can be moved along the inside of the pressure roller The track 5 rolls, and the pressure-bearing roller 1 is connected with the pressure-bearing roller 1 in pairs by the pressure-bearing roller chain plate 4, keeping the distance between the two pressure-bearing rollers 1 unchanged, and one circle of the chain roller is pressed at the same time when rolling. Rolling clockwise or counterclockwise in the same direction, the pressure roller 1 is limited by the pressure roller inner track 5 on the pressure roller bracket 31, and the pressure roller chain 7 formed by the pressure roller 2 surrounds the pressure roller bracket 2. Roll on the pressure roller inner track 5.

The pressure roller belt 7 is connected to the upper rotating part of the floating crane through the pin shaft 8 and the flange 3. When the upper rotating part of the floating crane turns, the connecting flange 3 drives the pressure roller belt 7 to move together, and the pressure roller 1 It also rolls along the circular track with the connecting flange 3 and the roller bracket 2, while the pressure bearing roller 1 bears the weight of the upper structure, and at the same time, the connecting flange 3 drives the upper structure to rotate together; the rotating part of the floating crane is Arranged on the pressure-bearing roller 1 according to a circle of customized circular track, the pressure-bearing rollers 1 in the roller device are connected to the pressure-bearing roller bracket 2 and then connected to the upper structure by the connecting flange 3, through Such connection structure roller 1 just can roll with respect to the revolving guide rail 6 supported under rotation, and pressure bearing roller 1 itself also rotates and rolls around the pressure bearing roller inner track 5 on the pressure bearing roller bracket 2 simultaneously.

The pressure-bearing roller 1 is placed on the custom-made track of the pressure-bearing roller slewing bearing 31 by relying on the chain-type roller bracket, while the rotating part of the floating crane is arranged on the pressure-bearing roller 1 according to a specially customized arc-shaped track. Each roller can roll relative to the upper track of the revolving part, and can also roll relative to the revolving guide rail 6 supported by the revolving lower part. At the same time, the pressure roller 1 itself also revolves around the pressure roller inner track 5 on the pressure roller bracket 2. Rotation scroll. The connection between the pressure-bearing roller slewing bearing 31 and the floating crane structure in the utility model is completed through the following connections: the rotating part of the floating crane is supported on the lower slewing bearing through the chain-type roller slewing bearing device, and the chain-type roller slewing bearing device is passed through the pressure-bearing roller On the upper rotating part of the bracket 2, at the center of rotation, the rotating part of the floating crane is set on the cylindrical cylinder of the fixed part through a small lower cylinder 32 which can make the rotating motion run more smoothly and bear the horizontal force. The two cylinders in the center rotate relative to each other through the cylindrical sliding bearing in the middle, and the upper structure hooks the lower slewing support cylinder with an anti-roll support device 33 that can prevent the floating crane from overturning during the slewing process and leaves a little gap.

The anti-roll support device 33 also adopts a chain-type rotary roller pressure bearing structure. Its operating mechanism is: change the force of a single fulcrum or few fulcrums to multi-fulcrum uniform force, reduce the wheel pressure of the anti-roller, prolong the service life of the roller, and increase The force of the anti-roll bracket is reduced, so that the structure can bear a larger overturning moment, and the bearing capacity of the floating crane is increased.

The whole revolving track is set as a circular ring track, the arrangement of the rollers of the chain roller slewing support device of the utility model matches with the revolving circular track, and the pressure bearing roller 1 rolls on the revolving track 6; according to the upper structure Mechanical analysis is carried out on the stress situation, and the position and number of the chain roller slewing bearing device of the present invention are arranged on the circular track to ensure that the device is just arranged at the position where the floating crane is directly stressed, so that the floating crane is stressed. It is more reasonable and has a larger bearing capacity; in order to ensure that the pressure roller 1 and the track rotate smoothly, the pressure roller 1 adopts the form of a cone to facilitate its smoothness, and the tread of the revolving track of the floating crane is also matched with the pressure roller 1 In this way, the pressure roller 1 and the track not only roll smoothly, but also do circular rolling around the center of rotation, which realizes the requirement of 360° full rotation of the floating crane and greatly increases the range of motion of the floating crane; the utility model The width of the rollers of the device is wider than that of the original wheels, the line contact length between the rollers and the track is longer, and its bearing capacity is stronger than that of the original wheels; The elastic and plastic smoked rubber makes the wheel pressure distribution among the rollers tend to be more uniform, so that the bearing capacity of the chain roller slewing support device of the present invention is stronger.

The chain-type roller slewing support device of the utility model has a small distance between the rollers, and more rollers are arranged per unit length, so that the structure is compact, the bearing capacity is large, and the force is distributed evenly; on the roller guide rail and the roller bracket of the chain-type roller slewing support device It can make the roller run along a specific track to make it rotate smoothly; while the roller guide rail of the chain roller slewing support rolls under pressure on the track, the roller itself also rotates and rolls around the inner track on the roller bracket, which can The role of the rollers can be brought into full play, compared with the existing densely distributed multi-row roller support, it has the advantages of saving the number of rollers and improving the utilization rate of the rollers.

The basic principles and main features of the present utility model and the advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (2)

1. chain type roller rotary supporting device that is installed on the heavy-duty floating crane, this rotary supporting device comprises revolution support and the following anti-support portion of rolling, it is characterized in that, described rotary supporting device also comprises chain type roller rotary supporting device and the anti-bearing set that rolls, and the bearing surface of described lower support portion is provided with circular guideway; The described rotating part of going up can rotatingly be placed on the circular guideway of lower support portion by chain type roller rotary supporting device; Described chain type roller rotary supporting device comprises pressure-bearing roller, supporting roll wheel support, supporting roll endless chain, and described supporting roll wheel support is in turn connected to form the pressure-bearing roller rotary supporting; Be provided with guide roller along the outside of pressure-bearing roller rotary supporting and move pressure-bearing roller inner orbit, described pressure-bearing roller is in turn connected to form pressure-bearing roller band by the supporting roll endless chain, and be placed on the pressure-bearing roller inner orbit, described chain type roller rotary supporting device is placed on the circular guideway in the lower support portion by pressure-bearing roller band.

2. a kind of chain type roller rotary supporting device that is installed on the heavy-duty floating crane according to claim 1, it is characterized in that, the described anti-bearing set that rolls comprises anti-hook roller, anti-hook rolling wheel support, anti-hook roller chain, described anti-hook rolling wheel support is in turn connected to form anti-hook roller rotary supporting, it is captiveed joint with last rotating part, be provided with guide roller along the outside of anti-hook roller rotary supporting and move anti-hook roller inner orbit, described anti-hook roller is in turn connected to form anti-hook roller band by anti-hook roller chain, and be placed on the anti-hook roller inner orbit, described chain type roller rotary supporting device is placed in counter rolling on the guide rail in the lower support portion by anti-hook roller band.

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