KR20070054148A - A self-movable caisson carrier vehicle and caisson carrier system there-using - Google Patents

Abstract

The present invention relates to a self-moving caisson conveying apparatus and a caisson conveying system using the same. The self-moving caisson conveying apparatus according to the present invention is formed at the bottom of a moving passage so as to easily convey a caisson manufactured at a caisson manufacturing site. A conveying system for conveying a manufactured or manufactured caisson along a moving rail, the caisson conveying apparatus moving along the moving passage while the caisson is seated on the upper side, the lower frame; An upper frame connected to an upper portion of the lower frame and fixing a lifting cylinder; An elevating cylinder fixed by the upper frame and configured to elevate the caisson mounted on a seating table to an upper portion thereof; A seating table coupled to an upper portion of the lifting cylinder and seated with a caisson; A moving cylinder coupled to both lower sides of the lower frame and moving the grip head forward or backward; A grip head moving forward or backward by the moving cylinder; A grip pad which is installed inside the grip head and which grips the moving rail formed in the moving passage while the grip head moves forward or backward, and a sliding pad which is coupled to the lower part of the lower frame and contacts the moving rail. Characterized in that it comprises a.

Caisson, conveying, cylinder, low friction pad, moving rail

Description

A self-movable caisson carrier system and caisson carrier system there-using}

1 is a bottom perspective view of a caisson transfer apparatus according to an embodiment of the present invention.

Figure 2 is a side view of a caisson transfer apparatus according to an embodiment of the present invention.

Figure 3 is a rear view of the caisson transfer apparatus according to the embodiment of the present invention.

Figure 4 is a perspective view of the grip head of the caisson transfer apparatus according to an embodiment of the present invention away.

Fig. 5 is a perspective view of a state where the grip head of the caisson transfer apparatus according to the embodiment of the present invention is near.

6 is a perspective view of a caisson transfer system according to an embodiment of the invention.

7 is a partially enlarged view of a caisson transfer system according to an embodiment of the present invention.

FIG. 8 shows a state in which the caisson transfer devices are grouped in FIG.

FIG. 9 illustrates a state in which a caisson transfer device is managed in accordance with heat in FIG. 7.

10 is a bottom perspective view of the caisson transfer apparatus according to the prior art.

11 is a perspective view of main parts of a caisson transfer system according to the prior art.

<Explanation of symbols for the main parts of the drawings>

1: caisson 20: caisson transfer device

30: lower frame 32: low friction plate

34: wheel 36: elastic member

40: upper frame 42: lifting cylinder

44: seating table 50: transfer table

52: hydraulic cylinder 54: support beam

56: pressurizing table

100: caisson transfer device 112,114: wheel side frame

116: support 118: elastic member

120: wheel 122: sliding pad

130: cylinder for movement 140: grip head

142: grip pad 144: piston for grip

150: upper frame 152: lifting cylinder

154: seat 200: caisson transfer system

210: moving passage 215: moving rail

The present invention relates to a self-moving caisson transfer apparatus and a caisson transfer system using the same, and more particularly, to a transfer apparatus and a transfer system that can easily transfer a caisson manufactured at the caisson workshop.

The caisson is used for coastal watershed construction, which is made of reinforced concrete and has a weight of several thousand tons. For this reason, in order to manufacture the caissons, the job of transporting the caissons being manufactured step by step in the workshop and transporting the manufactured caissons to the place of use is very dangerous and requires a high level of skill.

In order to convey such caissons, a method of conveying caissons through a floating dock and an aerolog system has been proposed as disclosed in Korean Patent Registration No. 10-0336071 (a caisson manufacturing movement apparatus and method thereof).

However, this method causes a problem that a hole is formed in the toric bag constituting the system and the system cannot function properly if a leak occurs. In addition, the height difference causes the caisson to collide with the transfer system, causing a problem of damage to the system or caisson.

In order to solve such a problem, a caisson transfer apparatus and a transfer method such as Korean Patent Laid-Open Publication No. 10-2005-0105820 have been proposed.

Hereinafter, referring to FIGS. 10 and 11, the caisson transfer apparatus and the transfer system using the same will be described.

Fig. 10 is a bottom perspective view of the caisson transfer apparatus according to the prior art, and Fig. 11 is a perspective view of the main parts of the caisson transfer system according to the prior art.

As shown in FIG. 10, the caisson transfer device 20 according to the prior art is based on the lower frame 30 and the upper frame 40.

The upper frame 40 is coupled to the upper portion of the lower frame 30, the lifting cylinder 42 is fixed to the upper frame 40. An upper portion of the elevating cylinder 42 is coupled to a seating table 44 on which a caisson is seated to move up and down.

The front and rear of the lower frame 30 is coupled to the wheel 34, which is buffered by the elastic member 36.

In addition, the low friction plate 32 is coupled to the lower portion of the lower frame (30).

Hereinafter, the transfer operation of the caisson 1 in the caisson transfer system equipped with the caisson transfer device 20 will be described.

As shown in Fig. 11, the caisson transfer device 20 is mounted on the moving rail.

In order to convey the caisson 1, the caisson 1 is seated on the seat 44, which is lifted up and down by the lifting cylinder 42.

In the second step, the hydraulic cylinder 52, the support beam 54, and the pressure bar 56 constituting the transfer table 50 are located at both sides of the caisson 1.

In the third step, the pressure table 56 moves the caisson 1 by the action of the hydraulic cylinder 52. In this case, the low friction plate 32 of the moving rail and the caisson transfer device 20 is easily moved by the caisson transfer device 20 along the moving rail due to the low friction.

When the movement of the caisson 1 is completed in the fourth step, the seating table 44 descends to lower the caisson 1.

In a fifth step, the caisson transfer device 20 is returned to its original position using the wheel 34.

Thereby, the caisson 1 being manufactured or completed is moved to a required position.

However, the caisson conveying system according to the prior art, in addition to the construction of the moving rail required for the movement of the caisson conveying device 20, additional construction work for the installation of the conveying table 50 requires a long time to build the system. The problem arises.

In addition, since the capacity of the hydraulic cylinder 52 for moving the caisson 1 becomes large, the manufacturing cost increases. On the other hand, when the weight of the caisson 1 is large, the existing hydraulic cylinder 52 can not be used, the resource consumption is large, a problem arises that the design is much restricted to manage the high pressure hydraulic pressure.

The present invention has been made to solve the problems according to the prior art described above, and an object of the present invention is to provide an apparatus and a system capable of transferring a caisson without using a large-capacity hydraulic cylinder.

Another object of the present invention is to provide a system capable of stably transporting a caisson even when a part of the ground on which the movement passage is built is a soft ground.

In order to achieve the above object, according to the self-moving caisson conveying apparatus according to the present invention, in the conveying system for transporting the caisson being manufactured or manufactured along the moving rail formed on the bottom of the movement passage, the caisson is seated on the top In the caisson transfer device for moving along the movement passage, the elevating device is moved up and down to move the caisson seated in the caisson transfer device up and down, and the caissons seated on the caisson transfer device It may include a mobile device for moving back and forth to move to.

In the present invention, the lifting device is a lifting cylinder, the front and rear movement device may be a moving cylinder.

In the present invention, the caisson transfer apparatus, the lower frame, the upper frame connected to the upper portion of the lower frame and fixed to the lifting cylinder, the seating table coupled to the upper portion of the lifting cylinder and the caisson is seated, and the movement A grip head may be included that moves forward or backward by the cylinder.

The grip head may include a grip pad installed inside the grip head to grab a moving rail formed in the moving passage while the grip head moves forward or backward, and the grip pad includes: The contact surface with the moving rail may be formed in a saw blade shape, or may be formed of a high friction material or a high friction material.

In the present invention, the caisson transfer device may include a sliding pad coupled to the lower portion of the lower frame in contact with the moving rail, the sliding pad, the surface is coated with a low friction material, or a low friction material itself Can be formed.

In the present invention, the caisson transfer device is coupled to the lower frame and the wheel side frame is coupled to the lower portion of the front and rear of the lower frame, in order to move the caisson transfer device when the caisson is in a no-load state, and the A wheel coupled to the wheel-side frame may be included, and the caisson transfer device may include a support and an elastic member in the wheel frame to cushion the external force applied to the wheel when the caisson is seated on the caisson seat. .

In the present invention, the lifting cylinder and the moving cylinder may be composed of a hydraulic cylinder operated by hydraulic pressure.

In addition, the seating table of the present invention, it may be formed in a pyramid shape of the upside down in order to disperse the impact force due to the instantaneous load on the seating table by the caisson.

The caisson transfer apparatus according to an embodiment of the present invention, in the transfer system for transferring the manufactured caisson or manufactured along the moving rail formed on the bottom of the movement passage, the caisson is moved along the movement passage with the caisson seated on the top In the caisson transfer apparatus, a lower frame, an upper frame connected to an upper portion of the lower frame and fixing a lifting cylinder, a lifting cylinder for lifting a caisson fixed by the upper frame and seated on a seat, to the upper portion, the lifting height Mounting seat coupled to the upper portion of the cylinder for the caisson is seated, a moving cylinder coupled to the lower both sides of the lower frame and moving the grip head forward or rear, grip head moving forward or rearward by the movable cylinder, Installed inside the grip head, the grip head being forward or backward During the movement, it may include a grip pad for grabbing the moving rail formed in the moving passage, and a sliding pad coupled to the lower portion of the lower frame and in contact with the moving rail.

According to an embodiment of the transfer system of the present invention, in the transfer system for transferring the caisson produced in the caisson manufacturing site to the waterside, a plurality of moving passages are formed from the caisson manufacturing site to the waterside, a plurality of the upper portion of the moving passage Two moving rails are formed, and a plurality of self-moving caisson transfer devices of the present invention are provided for each of the moving rails, and may include a control unit for adjusting the hydraulic pressure to be supplied to the lifting cylinder of the self-moving caisson transfer apparatus.

In the present invention, the self-moving caisson conveying device is all the self-moving caisson conveying device installed in the caisson conveying system is composed of two or more groups, the control unit is a hydraulic pressure so that the same hydraulic pressure is supplied to the self-moving caisson conveying device belonging to the same group Can be controlled.

In addition, the controller may control the oil pressure so that the same oil pressure is supplied to the self-moving caisson transfer device installed on the same moving rail.

In the following, embodiments of the present invention are described with reference to the accompanying drawings.

In the following description of the present invention, if it is determined that detailed descriptions of related known functions or configurations may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted. In addition, the terms to be described later are terms set in consideration of functions in the present invention, and these terms may vary according to the intention or custom of the producer producing the product, and the definition of the terms should be made based on the contents throughout the present specification. .

(Self-moving caisson feeder)

Hereinafter, a self-moving caisson transfer device according to an exemplary embodiment of the present invention will be described with reference to FIGS. 1 to 3.

1 is a bottom perspective view of a caisson transfer apparatus according to an embodiment of the present invention, FIG. 2 is a side view of a caisson transfer apparatus according to an embodiment of the present invention, and FIG. 3 is a rear view of a caisson transfer apparatus according to an embodiment of the present invention. It is also.

As shown, self-moving caisson transfer device 100 according to an embodiment of the present invention (unless otherwise described below, 'self-moving caisson transfer device' for the convenience of the description is briefly referred to as 'caisson transfer device') Is formed by forming a lower frame 110 constituting the basic body, coupled to the lifting cylinder 152 on the top, to combine the wheel 120 in the front and rear, and to combine the lower sliding pad 122 .

An upper frame 150 for fixing the lifting cylinder 152 is coupled to an upper portion of the lower frame 110 to surround the lifting cylinder 152.

The lifting cylinder 152 is used to lift the caisson seated on the seating table 154. The lifting cylinder 152 is formed of a hydraulic cylinder. The hydraulic pressure is provided by the control of the control unit of the caisson transfer system described later.

The seating table 154 provides a space in which the caisson is seated, and is formed in a pyramidal shape in an inverted state to prevent damage to the seating board by the caisson. As a result, the shock generated at the moment when the caisson is seated on the seating table 154 is dispersed by the pyramidal structure in an inverted state, thereby preventing the caisson transfer device 100 from being damaged.

Wheel side frame 112 is coupled to the front and rear of the lower frame 110.

The wheel side frame 112 is coupled to the wheel 120, the buffer function is performed by the support 116 and the elastic member 118. The wheel 120 functions as a moving means by which the caisson transfer device 100 is moved when the caisson transfer device 100 is not mounted (that is, no load state).

Both sides of the lower side of the lower frame 110, the moving cylinder 130 is coupled. The moving cylinder 130 pushes or pulls the grip head 140 through the grip piston, and serves as a moving means for moving the caisson transfer device 100 while the caisson is mounted on the caisson transfer device 100. The moving cylinder 130 is formed of a hydraulic cylinder. The hydraulic pressure is provided by the control of the control unit of the caisson transfer system described later.

The grip head 140 is connected to one side of the lower frame 110 through a grip piston. Inside the grip head 140, a grip pad 142 that grips the moving rail of the moving passage during the movement of the grip head is engaged.

The grip pad 142 is configured to have a contact surface with a moving rail in a saw blade shape to increase frictional force. In addition, the grip pad 142 is preferably formed of a high friction material coating or high friction material.

The sliding pad 122 is coupled to the lower bottom of the lower frame 110. The sliding pad 122 is coated with a low friction material, or is itself formed of a low friction material, in contact with the moving rail to help the caisson transfer device 100 to slide.

(Movement of caisson feeder)

Hereinafter, a movement of a caisson transfer device according to an exemplary embodiment of the present invention will be described with reference to FIGS. 4 and 5.

Figure 4 is a perspective view of the grip head of the caisson transfer device according to an embodiment of the present invention away, Figure 5 is a perspective view of the grip head of the caisson transfer device according to an embodiment of the present invention closer.

In a state in which the caisson is not positioned on the seating table 154 of the caisson transfer apparatus 100, the caisson transfer apparatus 100 moves by the rotation of the wheel 120.

On the other hand, when the caisson is mounted on the caisson transfer device 100, the first step, the hydraulic pressure is supplied to the lifting cylinder 152, the seating table 154 is lifted up.

In the second step, the caisson is mounted on the seating table 154.

In the third step, as the caisson is mounted on the seating table 154, the elastic member 118 of the caisson transfer device 100 is pressed to contact the sliding pad 122 with the moving rail 215.

In the fourth step, the hydraulic pressure is supplied to the moving cylinder 130 so that the grip head 140 is separated from the caisson transfer device 100 by the grip piston 144. The state at this time is shown in FIG.

In a fifth step, the grip pad 142 grips the moving rail 215.

In a sixth step, the moving cylinder 130 causes the grip head 140 to be pulled toward the caisson transfer device 100 by hydraulic pressure. At this time, the grip pad 142 of the grip head 140 is holding both side walls of the moving rail 215, the caisson transfer device 100 is a low friction sliding pad 122 and the upper surface of the moving rail 215 I'm in contact. Accordingly, the caisson transfer device 100 moves toward the grip head 140 while the position of the grip head 140 is maintained. The state at this time is shown in FIG.

Hereinafter, the caisson is moved to a desired position by repeating the process of the fourth to sixth steps.

(Caissons transfer system)

Hereinafter, a caisson transfer system will be described with reference to FIGS. 6 and 7.

6 is a perspective view of a caisson transfer system according to an embodiment of the present invention, and FIG. 7 is a partially enlarged view of a caisson transfer system according to an embodiment of the present invention.

As shown, in the caisson transfer system 200 according to the present embodiment, a plurality of moving passages 210 are formed from the caisson workshop to the waterside where the caisson is to be used. The movement passage 210 is provided with a plurality of movement rails 215. The moving rail 215 is coated or coated with a material of low friction material or itself is made of a low friction material, so that the sliding pad 122 of the caisson transfer device 100 can easily slide and move.

A plurality of caisson transfer devices 100 are positioned on the upper portion of the moving rail 215. The caisson transfer device 100 is provided with hydraulic pressure necessary for the operation of the lifting cylinder 152 and the moving cylinder 130 by the control of a control unit (not shown).

(Grouping caisson transfer units)

The caisson transfer system 200 according to the embodiment of the present invention manages all caisson transfer devices 100 installed in the caisson transfer system 200 by grouping them into several groups (preferably three groups).

Hereinafter, the caisson transfer device 100 will be grouped and managed with reference to FIG. 8.

FIG. 8 shows a state in which the caisson transfer devices are grouped in FIG.

As shown in FIG. 8, the caisson transfer system 200 has three moving passages 210, and each moving passage 210 is formed with two moving rails 215.

On the other hand, each caisson transfer apparatus 100 is provided in each moving rail 215. As a result, the present caisson conveying system 200 has a total of 42 caisson conveying devices 100.

In FIG. 8, it is assumed that the caisson transfer device 100 at the upper left is 'A0', and the caisson transfer device 100 installed on the moving rail 215 provided with 'A0' is 'A1' to 'A6' in order. do. In addition, the caisson transfer device of the side moving rail 215 is referred to as 'B0' ~ 'B6'. In the same way, the caisson transfer units from 'C0' to 'F6' are classified by their respective identification slogans.

The caisson conveying system 200 assigns, for example, caisson conveying devices of 'A0' to 'A2', 'B0' to 'B2', ... 'F0' to 'F2' as rear groups, and 'A3'. Assign caisson feeder of '~' A6 ',' B3 '~' B6 ',' C3 '~' C6 'to the left group,' D3 '~' D6 ',' E3 '~' E6 ',' F3 Assign the caisson feeder of '~' F6 'to the right group.

The caisson transfer device 100 belonging to the same group shares the hydraulic supply line. Therefore, the same hydraulic pressure acts on the caisson transfer device 100 belonging to the same group.

Then, when the caisson is mounted on the caisson transfer device 100, for example, if the portion mounted on the rear group in the caisson structure design is more than the left group or the right group, the control unit in the caisson transfer device belonging to the rear group The lifting cylinder 152 of the 100 controls to operate a higher hydraulic pressure than that of the left group or the right group. Thereby, the caisson mounted on the caisson transfer device 100 can be controlled so as not to tilt to either side.

In addition, even if the description is omitted, it will be readily apparent to those skilled in the art that the caisson can be balanced by applying high hydraulic pressure to the group belonging to the direction in which the caisson load is biased.

(Row management of caisson transfer units)

The caisson transfer system 200 according to an embodiment of the present invention manages all caisson transfer devices 100 installed in the caisson transfer system 200 by grouping them according to rows.

Hereinafter, the caisson transfer device 100 will be grouped and managed according to heat with reference to FIG. 9.

FIG. 9 illustrates a state in which a caisson transfer device is managed in accordance with heat in FIG. 7.

As shown in FIG. 9, the caisson conveying system 200 has three moving passages 210, and each moving passage 210 is formed with two moving rails 215.

On the other hand, each caisson transfer apparatus 100 is provided in each moving rail 215. As a result, the present caisson conveying system 200 has a total of 42 caisson conveying devices 100.

In FIG. 7, it is assumed that the caisson conveying apparatus 100 at the upper left is 'A0', and the caisson conveying apparatus 100 installed on the moving rail 215 provided with 'A0' is 'A1' to 'A6' in order. do. In addition, the caisson transfer device of the side moving rail 215 is referred to as 'B0' ~ 'B6'. In the same way, the caisson transfer units from 'C0' to 'F6' are classified by their respective identification slogans.

The caisson conveying system 200 groups, for example, caisson conveying devices of 'A0' to 'A6' into the first row, and conveys caissons of 'B0' to 'B6', ... 'F0' to 'F6'. Group the devices into rows 2-6.

The caisson transfer device 100 belonging to the same row group shares the hydraulic supply line. Therefore, the same hydraulic pressure acts on the caisson transfer device 100 belonging to the same group.

Since the caisson transfer system 200 is built close to the waterside, soft ground may be present.

In this case, for example, a moving rail 215 provided with caisson transfer devices in the second and third rows may be present on the soft ground. If the moving rails of the second row and the third row can withstand only 50% of the supporting loads compared to the moving rails of the other rows, the caisson transfer system 200 will have the first row: second row: third row: fourth row: Distribute the load ratios in column 5: 6 to 1: 0.5: 0.5: 1: 1: 1.

Accordingly, even when the ground is a soft ground, it is possible to stably transport the caissons by controlling the hydraulic pressure of the caisson transfer devices grouped according to the heat.

In addition, even if the description is omitted, it will be readily apparent to those skilled in the art that the caisson can be balanced by applying a low hydraulic pressure to the group belonging to the column in which the caisson load is biased.

The embodiments of the present invention have been described above with reference to the accompanying drawings. However, it is to be noted that the present invention is not particularly limited only to the above-described embodiments, and that various modifications and changes can be made by those skilled in the art within the spirit and spirit of the appended claims as necessary.

For example, the caisson conveying system according to the present invention is capable of grouping caisson conveying devices or grouping them in combinations, in addition to grouping by rows.

As described above, according to the present invention, it is possible to provide a caisson transfer apparatus which can move itself by a configuration of a moving cylinder, a lifting cylinder, a grip head, a grip pad, or the like, in the caisson transfer apparatus.

That is, in the conventional transfer system, a large hydraulic cylinder must be used for the movement of the caisson transfer device, which increases the manufacturing cost and requires additional construction work for the installation of the transfer table. In accordance with the present invention, the caisson can be transported by a simple installation operation of installing the caisson transporting device which is self-movable on the transport rail, thereby significantly reducing the installation time and cost.

In addition, in the conventional conveying system, when the weight of the caisson is large, the conventional hydraulic cylinder can not be used, the resource consumption is high, and a problem arises that the design is restricted to manage the high pressure hydraulic pressure.

However, according to the present invention, the present invention can be applied without restriction by a system including a self-transporting caisson conveying device structure and a control unit without replacing parts, even in various possible situations, such as a case of soft ground as well as a weight of caisson weight. The caisson transfer device and system will be provided.

In addition, according to the present invention, the grip pad is formed in the shape of a saw blade, coated with a high friction material or a high friction material, even when a strong hydraulic force is applied to the rail when contacting the moving rail, the rail strongly You can grip it.

In addition, the present invention includes a sliding pad in contact with the moving rail in the lower part of the lower frame, so that the caisson transfer device can be easily moved along the rail even when the heavy caisson is seated, in particular, the sliding pad is low friction The surface is coated with the material, or is itself formed of a low friction material, which makes it easier for the caisson transfer device to move along the rail.

In addition, in the present invention, the wheel-side frame coupled to the lower portion of the front and rear of the lower frame, and the wheel coupled to the wheel-side frame is included, the hydraulic cylinder or the like is not used when the caisson is in a no-load state is not seated It is possible to easily move the caisson feeder without a simple operation.

In addition, in the present invention, the support frame and the elastic member is included in the wheel frame, and when the caisson is seated on the caisson seat, the external force applied to the wheel can be buffered.

In addition, in the present invention, the seating stand is formed in a pyramid shape in an inverted state, so that it is possible to disperse the impact force due to the instantaneous load applied to the seating table by the caisson, thereby preventing damage to the seating board due to heavy loads. .

Also, according to the present invention, the caisson transfer devices belonging to the caisson transfer system are grouped and managed, and the caisson transfer devices belonging to the same group share the same hydraulic supply line to transfer the caissons regardless of the load bias or the soft ground of the caissons. Can provide a caisson transfer system.

That is, when the state of the ground is different, such as when the part is a soft ground, when the grouping according to the heat in the control unit can control the caisson by controlling the hydraulic pressure of the grouped caisson transfer devices according to each group to be stable.

Claims (15)

In a conveying system for conveying a caisson being manufactured or manufactured along a moving rail formed at the bottom of the moving passage, the caisson transfer apparatus for seating the caisson and moving along the moving passage, And a lifting device which is moved up and down to move the caisson seated on the caisson transfer device up and down, Self-moving caisson transfer device, characterized in that the movement device is moved forward and backward so as to move the caisson seated on the caisson transfer device forward and backward. The self-moving caisson transfer device according to claim 1, wherein the elevating device is a lifting cylinder, and the forward and backward moving device is a moving cylinder. According to claim 2, The caisson transfer device, Lower frame; An upper frame connected to an upper portion of the lower frame and fixing the lifting cylinder; A seating table coupled to an upper portion of the lifting cylinder and seated with a caisson; And Self-moving caisson transfer device, characterized in that it comprises a grip head to move forward or backward by the moving cylinder. 4. The grip head of claim 3, wherein the grip head includes a grip pad installed inside the grip head to grab a moving rail formed in the moving passage while the grip head moves forward or backward. , Self-moving caisson feeder. The method of claim 4, wherein the grip pad, Self-moving caisson transfer device characterized in that the contact surface with the moving rail is formed in a saw blade shape, or a coating of high friction material or high friction material. 5. The self-moving caisson conveying apparatus of claim 4, wherein the caisson conveying apparatus comprises a sliding pad coupled to a lower portion of the lower frame and contacting the moving rail. The method of claim 6, wherein the sliding pad, Self-moving caisson transfer device, characterized in that the surface is coated with a low friction material, or is itself formed of a low friction material. According to claim 4, The caisson transfer device is coupled to the lower frame and the wheel-side frame coupled to the lower portion of the front and rear of the lower frame to move the caisson transfer device when the caisson is unloaded state Self-moving caisson transfer device, characterized in that the wheel is coupled to the wheel frame. The self-moving type of claim 8, wherein the caisson transfer device includes a support and an elastic member in the wheel frame to cushion an external force applied to the wheel when the caisson is seated on the caisson seat. Caisson feeder. The self-moving caisson transfer device according to any one of claims 2 to 9, wherein the lifting cylinder and the moving cylinder are constituted by a hydraulic cylinder operated by hydraulic pressure. The method of claim 10, wherein the seating table, Characterized in that the pyramid shape of the inverted state in order to disperse the impact force by the load momentarily applied to the seat by the caisson, self-moving caisson transfer device. In the transfer system for transporting the caisson being manufactured or manufactured along the moving rail formed on the bottom of the moving passage, in the caisson transfer device for moving along the moving passage with the caisson seated on the top, Lower frame; An upper frame connected to an upper portion of the lower frame and fixing a lifting cylinder; An elevating cylinder fixed by the upper frame and configured to elevate the caisson mounted on a seating table to an upper portion thereof; A seating table coupled to an upper portion of the lifting cylinder and seated with a caisson; A moving cylinder coupled to both lower sides of the lower frame and moving the grip head forward or backward; A grip head moving forward or backward by the moving cylinder; A grip pad provided inside the grip head and gripping a moving rail formed in the moving passage while the grip head moves forward or backward; And And a sliding pad coupled to a lower portion of the lower frame and in contact with the moving rail. In the conveying system for transporting the caisson manufactured in the caisson workshop to the waterside A plurality of moving passages are formed from the caisson workshop to the waterside, A plurality of moving rails are formed on the upper portion of the moving passage, A plurality of self-moving caisson transfer device according to any one of claims 1 to 12 is provided for each of the moving rails, And a control unit for adjusting the hydraulic pressure to be supplied to the lifting cylinder of the self-moving caisson transfer device. 14. The apparatus of claim 13, wherein all self-moving caisson conveying devices installed in the caisson conveying system comprise two or more groups, The control unit, the caisson transfer system, characterized in that for controlling the hydraulic pressure so that the same hydraulic pressure is supplied to the self-moving caisson transfer device belonging to the same group. The method of claim 13, wherein the control unit, A caisson transfer system, characterized in that for controlling the hydraulic pressure so that the same hydraulic pressure is supplied to the self-moving caisson transfer device installed on the same moving rail.

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