JP2008190197A - Crane capable of mounting oil hydraulic unit and method and apparatus for oil hydraulic operation using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To parallelly execute swivel operations of a crane and operations using an oil hydraulic operating apparatus in a small space in the case of executing specific operations combining the crane and the oil hydraulic operating apparatus different from the crane. <P>SOLUTION: An oil hydraulic unit 12 including a drive source different from an oil hydraulic circuit incorporated in the crane 10 is mounted to an upper swivel body of the crane 10 instead of at least part of a counter weight 46. The oil hydraulic operating apparatus 14 is installed outside the crane 10 and connected to the oil hydraulic unit 12 through the use of a swivel joint provided for the crane 10. Specific construction such as foundation pile construction etc. is proceeded by the parallel drive of the oil hydraulic operating apparatus 14 by supplying oil pressure from the oil hydraulic unit 12 for the oil hydraulic operating apparatus 14 through the swivel joint and that of the swiveling of the upper swivel body 20. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a technique for performing a specific operation using a crane incorporating a hydraulic circuit and a hydraulic unit having a drive source different from the hydraulic circuit.

  Among constructions performed using a hydraulic crane, there is a construction that can be carried out by using not only the crane but also another hydraulic working device. For example, Patent Document 1 discloses a method of advancing foundation pile construction by combining a hydraulically driven crane and a boring machine.

  The crane described in the said patent document 1 is provided with a lower traveling body and an upper turning body. A boom that can be raised and lowered is mounted on the upper swing body, and an excavation bucket is suspended from the tip of the boom. This excavation bucket excavates a hole in the vertical direction to the ground and performs soil removal. On the other hand, the boring machine is for building a casing tube for covering the inner wall surface of the hole in the ground, and holding the casing tube and pushing it into the ground while rotating around its central axis I do.

Since the boring machine has a large driving load, a power unit (hydraulic unit) including a driving source different from the hydraulic circuit mounted on the crane is used to hydraulically drive the boring machine. The power unit is installed on the ground at a position near the boring machine, and is connected to the boring machine via a pipe. Then, by supplying pressure oil to the boring machine, the boring machine is caused to rotate and press-fit the casing tube.
JP-A-10-205263

  The device described in Patent Document 1 requires a space for installing a hydraulic unit for driving the boring machine in addition to a space for installing the boring machine, which is the crane and hydraulic work equipment. Therefore, it is difficult to apply this apparatus to work in a narrow place. In addition, there is an inconvenience that the hydraulic unit must be moved in accordance with the change of the work place.

  As a means for solving these disadvantages, it is conceivable to mount the hydraulic unit on the crane. However, it is difficult to secure a mounting space for such a hydraulic unit on the crane. Further, if the crane is enlarged to secure the mounting space, the installation space for the entire apparatus will not be reduced.

  In addition, it is conceivable that a part or all of the counterweight mounted on the upper swing body of the crane is lowered and the hydraulic unit is mounted in exchange for this. When the upper swing body turns while being mounted on, the hydraulic unit also turns together with the upper swing body. The turning of the hydraulic unit may cause trouble in piping such as a rubber hose that connects the hydraulic unit and the boring machine (or other hydraulic working device). Accordingly, it is practically difficult to simultaneously supply the hydraulic pressure from the hydraulic unit to the hydraulic working device and simultaneously rotate the upper swing body.

  In view of such circumstances, the present invention, in combination with a crane and a hydraulic work equipment different from the crane, performs a specific work and performs a turning work in the crane and the hydraulic work equipment in a small space. The purpose is to allow parallelism with work using

  As means for solving the above-mentioned problems, the present invention includes a lower traveling body, an upper swing body that is turnably mounted on the lower traveling body, a hydraulic circuit incorporated in the lower traveling body, and the upper swing body. A hydraulic working method using a crane comprising a swivel joint for connecting a hydraulic circuit incorporated in a body, and a counterweight mounted on the upper swing body so as to be replaceable with the hydraulic unit, A unit mounting step of mounting a hydraulic unit including a drive source different from the hydraulic circuit incorporated in the upper rotating body instead of at least a part of the counterweight, and installing a hydraulic working device outside the crane And connecting the hydraulic work equipment to the hydraulic unit via the crane swivel joint, and from the hydraulic unit The parallel operation of driving the hydraulic working device by supplying hydraulic pressure to the hydraulic working device and the turning drive of the upper swing body in the crane allows the crane and the hydraulic working device to cooperate to perform specific construction. And a construction process for performing.

  In this method, since the hydraulic unit for hydraulically driving the hydraulic working device is mounted on the upper swing body of the crane instead of at least a part of the counterweight, the space for installing the hydraulic unit is reduced. The Moreover, since the hydraulic unit is connected to the hydraulic working device via a swivel joint for connecting the hydraulic circuit of the lower traveling body and the hydraulic circuit of the upper swing body in the crane, Troubles in piping will not occur even if the upper swing body is swung. Therefore, it is possible to drive the hydraulic working device by the hydraulic pressure supplied from the hydraulic unit and to drive the upper swing body simultaneously without any inconvenience.

  The counterweight exchanged with the hydraulic unit may be all or a part of the counterweight mounted on the crane. In other words, the hydraulic unit may be replaced with all of the counterweights mounted on the crane, or may be replaced with only a part of them.

  As the construction process, for example, in the construction process, an excavator is suspended from a boom provided on the upper swing body of the crane so that it can be raised and lowered, and a tubular jack is used as the hydraulic work device. What parallels the work of building the casing and the work of excavating a hole in the ground and discharging the earth and sand by a combination of the drive of the excavator and the drive of raising and lowering the boom and the turning drive of the upper turning body, included. In such a construction process, hydraulic pressure is supplied to the casing jack from the hydraulic unit mounted on the upper swivel body while turning the upper swivel body for excavation and soil removal of holes in the ground. Thus, the casing erection work by the casing jack can be performed in parallel with the excavation and the earth removal.

  Further, the present invention is a crane in which a hydraulic circuit is incorporated and a hydraulic unit including a hydraulic source different from the hydraulic circuit is detachably mounted, and can be rotated on the lower traveling body and the lower traveling body A swivel joint for connecting an upper swing body mounted on the upper traveling body, a hydraulic circuit incorporated in the lower traveling body and a hydraulic circuit incorporated in the upper swing body, and at least part of the swivel joint is connected to the upper swing body. A counterweight exchangeable with the hydraulic unit, and a unit pipe for outputting the hydraulic pressure generated by the hydraulic unit mounted on the upper swing body to the outside of the crane instead of the counterweight. Piping for the upper revolving unit is connected to a hydraulic unit mounted on the upper revolving unit instead of the counterweight. And an output portion provided at a position connectable to a hydraulic working device installed outside the crane in the lower traveling body and connected to the input portion via the swivel joint. .

  Further, the present invention includes a hydraulic source different from the crane and the hydraulic circuit of the crane, can be mounted on the upper swing body of the crane instead of at least a part of the counterweight of the crane, and A hydraulic unit that can be connected to the input unit of the crane unit piping in the mounted state and a hydraulic unit that can be connected to the output unit of the crane and performs a specific work by the hydraulic pressure supplied from the hydraulic unit through the unit piping The hydraulic working device is provided with a hydraulic working device that is driven as described above.

  According to the above configuration, by using the unit pipe provided in the crane, the installation space of the hydraulic unit can be reduced by mounting the hydraulic unit on the upper swing body instead of the counterweight. It is possible to simultaneously perform the turning of the upper turning body and the supply of hydraulic pressure from the hydraulic unit to the hydraulic working device while being planned. That is, in the crane, the input portion of the unit pipe is connected to a hydraulic unit in place of the counterweight, and the output portion is connected to the hydraulic working device, so that the hydraulic unit is integrated with the upper swing body. In spite of the turning, a hydraulic supply system is constructed in which this hydraulic unit is connected to the hydraulic working device via the swivel joint without any trouble in piping. This enables simultaneous work in parallel with the work using the turning of the upper turning body and the work using the hydraulic working device.

  As the crane, for example, a boom that can be raised and lowered by rotating around a horizontal axis is mounted at the front of the upper swing body, and the lower traveling body is a main body that supports the upper swing body It is preferable to have a frame and traveling crawlers provided on the left and right sides of the main body frame, and the output portion of the unit pipe is provided on the front side of the main body frame. According to this crane, by moving the crane so that the construction place where a specific work is required is located in front of the crane, the work using the boom undulation is smoothly performed on the construction place. At the same time, it is possible to reduce the length of the pipe connecting the hydraulic working device used at the construction site and the output unit of the crane unit pipe. That is, even if the hydraulic unit is mounted on the rear part of the upper swing body instead of at least a part of the counterweight, the hydraulic working device is located on the output side of the unit pipe provided on the crane and on the front side thereof Therefore, the length of the pipe for connecting the two can be shortened.

  As a preferred example of the hydraulic working device, the crane includes a boom for lifting an excavator that is provided on the upper swing body so as to be raised and lowered, and excavates a hole in the ground to grab the earth and sand. The work equipment includes a casing jack in which a tubular casing is built in the ground so as to cover the inner peripheral surface of the hole. In this apparatus, the excavation work to the ground accompanied by the erection of the casing can be performed efficiently and in a small space by the parallel rotation of the swing of the upper swing body and the raising and lowering of the boom and the driving of the hydraulic working device. .

  The specific configuration for mounting the hydraulic unit further includes a hydraulic unit mounting table for mounting the hydraulic unit, and the counterweights are stacked on the upper swing body. A plurality of weight members each having a weight-side connecting portion and an arbitrary number of weight members among these weight members so that they can be attached and detached as counterweights exchanged with the hydraulic unit. A connecting member that connects the weight side connecting portions of adjacent weight members, and the hydraulic unit mounting table is mounted on the uppermost weight member of the weight member remaining on the upper swing body. The mounting table side which can be connected to the weight side connecting portion of the uppermost weight member in the state of being connected via the connecting member Having a binding unit, it is suitable.

  In this apparatus, the other weight members are removed while leaving an appropriate weight member among the weight members, and the hydraulic unit is placed on the remaining weight members via the hydraulic unit mounting table instead of the removed weight member. Can be placed. Moreover, the hydraulic unit mounting table can be fixed on the uppermost weight member on the upper swing body without using a special member by using a connecting member for connecting the weight members. is there.

  As described above, according to the present invention, the mounting space of the counterweight in the upper swing body of the crane and the swivel joint for connecting the hydraulic circuit of the lower traveling body of the crane and the hydraulic circuit of the upper swing body are provided. By using it effectively, there is an effect that the turning operation by the crane and the operation using the hydraulic working device can be performed in parallel in a small space.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows an overall configuration of a foundation pile forming apparatus corresponding to a hydraulic working apparatus according to the present invention. 2 and 3 includes a crane 10, a hydraulic unit 12 that can be mounted on the crane 10, and a casing jack 14 that is driven by hydraulic pressure supplied from the hydraulic unit 12. The crane 10 has a built-in hydraulic circuit and is used for excavating and discharging a vertical hole in the ground G. The casing jack 14 is used to build a casing 16 (FIG. 9), which will be described in detail later, into the hole. The hydraulic unit 12 incorporates a hydraulic pressure source different from the hydraulic circuit incorporated in the crane 10 and supplies necessary hydraulic pressure to the casing jack 14.

  The crane 10 includes a lower traveling body 18 and an upper revolving body 20 that is rotatably mounted on the lower traveling body 18.

  The lower traveling body 18 includes a main body frame 22 and traveling crawlers 24 provided on the left and right sides of the main body frame 22. The main body frame 22 includes a central frame 26 as shown in FIG. 4A and beams 27 and 28 connected to front and rear portions thereof. On the central frame 26, a bearing 30 is provided for supporting the upper swing body 20 in a swingable manner. The beams 27 and 28 extend in the left-right direction, and the traveling crawler 24 is connected to both ends thereof. Each traveling crawler 24 includes a crawler frame 32 coupled to each of the beams 27 and 28 and a crawler belt 34 disposed around each crawler frame 32, and the crane 10 travels by driving these crawler belts 34. To do.

  The upper swing body 20 includes a swing frame 36, and the swing frame 36 is coupled to the bearing 30. On the swivel frame 36, a cab 38, a boom 40, a boom hoisting winch 42, a crown hanging winch 41, a bucket hanging winch 44, a gantry 45, and a plurality of pieces (four pieces in the example shown in FIG. 6). ) Of the weight member 46a is mounted.

  The driver's cab 38 is provided in the front right side region of the revolving frame 36, and the boom 40 and the revolving frame 36 are connected to each other on the side. The boom 40 is connected to the revolving frame 36 so as to be rotatable about a horizontal axis, and is raised and lowered by the rotation.

  The boom hoisting winch 42, the crown hanging winch 41, and the bucket hanging winch 44 are mounted at the center of the revolving frame 36, and the gantry 45 is erected on the rear side. A boom hoisting rope 48 is pulled out from the boom hoisting winch 42, and this rope 48 is between the spreader provided at the top of the gantry 45 and the spreader at the tip of the guy line 49 guided from the tip of the boom 40. It is passed over to.

  Hanging ropes 43 and 47 are pulled out from the bucket hanging winch 44 and the crown hanging winch 41, respectively. These ropes 43 and 47 hang from the tip of the boom 40. Among them, a digging bucket 50, which is an excavator, is suspended at the end of the suspension rope 43, and a crown 51 is suspended at the end of the suspension rope 47.

  The excavation bucket 50 has left and right bucket shells 52 that can be opened and closed. These bucket shells 52 are automatically closed when the excavation bucket 50 falls onto the excavation ground G and the tension of the rope 43 is released. Then, after excavation of the earth and sand, the excavation bucket 50 is lifted by winding the rope 43 and hits the crown 51, whereby a cam (not shown) is operated to open the bucket shell 51 and discharge the earth and sand.

  The casing jack 14 includes a cylindrical main body 53 into which the casing 16 can be inserted, an unillustrated gripping part for gripping the casing 16 from the outside in the main body 53, and an unillustrated hydraulic pressure for rotating the gripping part. A motor and a hydraulic jack 54 for raising and lowering the main body 53 and the grip portion are provided. The hydraulic motor and the hydraulic jack 54 are driven by the hydraulic pressure supplied from the hydraulic unit 12.

  A plurality of weight members 46a constituting the counterweight 46 are stacked on a counterweight loading table 56 provided at the rear end of the revolving frame 36, and the stacked state is a connecting unit 60 as shown in FIG. Fixed by. Each connecting unit 60 has a detachable connection between the lowermost weight member 46a of the counterweights 46 and the counterweight stacking table 56, and a detachable connection between the weight members 46a adjacent to each other in the vertical direction. Do.

  Each connecting unit 60 includes a bracket (weight side connecting portion) 62 projecting forward from the weight member 46a or the counterweight loading platform 56, and a link (upward and downward) connecting the brackets 62 adjacent to each other ( Connecting member) 64. The pins 68 are inserted into through holes 66 provided in the brackets 62 and through holes (not shown) provided at both upper and lower ends of the links 64, whereby the lowest weight member 46a and the counter The connection with the weight loading table 56 and the connection between the weight members 46a are performed in a detachable state.

  The hydraulic unit 12 can be replaced with any number of weight members 46a (upper three in the illustrated example) of the counterweights 46, and the remaining uppermost weight member 46a is replaced with these weight members 46a. (In the example shown in the figure, it is placed on the lowermost weight member 46a before replacement). For this mounting, a hydraulic unit mounting table 70 as shown in FIG. 7 is used.

  The hydraulic unit mounting table 70 can be mounted on the lowermost weight member 46 a, and the hydraulic unit 12 can be mounted on the hydraulic unit mounting table 70. The hydraulic unit mounting table 70 has a bracket (mounting table side connecting portion) 62 having a through hole 66 in the same manner as the weight members 46 a, and the connecting unit 60 including the bracket 62 and the link 64 is used to It is detachably connected to the lowermost weight member 46a.

  Next, hydraulic piping in the crane 10 will be described.

  In the crane 10, hydraulic circuits are incorporated in the lower traveling body 18 and the upper swing body 20, respectively. The hydraulic circuit incorporated in the lower traveling body 18 includes, for example, a traveling hydraulic motor. The hydraulic circuit incorporated in the upper swing body 20 includes, for example, a hydraulic pump coupled to an engine mounted on the upper swing body 20, a winch hydraulic motor, and a swing hydraulic motor.

  The hydraulic circuit incorporated in the lower traveling body 18 and the hydraulic circuit incorporated in the upper swing body 20 are interconnected via a swivel joint 72 as shown in FIGS. The swivel joint 72 is erected on the central frame 26 of the lower traveling body 18 and is fixed to the central frame 26 side, and around the pivot center axis of the upper swing body 20 with respect to the fixed part. And a rotatable rotating part. The hydraulic circuit on the lower traveling body 18 side is connected to the fixed part, and the hydraulic circuit on the upper swing body 20 side is connected to the rotating part.

  Further, as a feature of the crane 10, a unit pipe for connecting the hydraulic unit 12 mounted in place of the counterweight 46 to the casing jack 14 is constructed using the swivel joint 72. This unit pipe has an upper swing body side pipe 73 provided on the upper swing body 20 side and a lower travel body side pipe 74 provided on the lower travel body 18 side. A swivel joint 72 is interposed.

  As shown in FIGS. 2 and 3, the upper swing body side pipe 73 has an input portion 75 provided in the vicinity of the mounting location of the hydraulic unit 12. Then, from the input part 75, it passes around the side edge of the upper swing body 20 to the front side and is connected to the rotating part of the swivel joint 72. The input unit 75 is made of, for example, a coupler, and is detachably coupled to an output unit (not shown) provided in the hydraulic unit 12.

  As shown in FIGS. 4 and 5, the lower traveling body side pipe 74 passes from the fixed portion of the swivel joint 72 below the central frame 26, and further through the through hole 27 a provided in the front beam 27. 27, and the derived end portion constitutes an output portion 76. The output unit 76 is stored in a case 80 as shown in FIGS. 2 and 3 and is handled as a hydraulic output unit. And it connects with the edge part of the piping 78 (FIG. 1) guide | induced from the said casing jack 14 so that attachment or detachment is possible.

  The specific position and number of the output units 76 can be set as appropriate. For example, the output unit 76 may be led out to the side of the lower traveling body 18. However, when the output unit 76 is led out to the front side of the main body frame 22 of the lower traveling body 18 as shown in the drawing, the hydraulic working device used in the construction site on the front side of the main body frame 22 (in this embodiment, the casing) The length of the pipe 78 connecting the jack 14) and the output unit 76 is shortened. That is, even if the hydraulic unit 12 is mounted on the rear portion of the upper swing body 20 instead of the counterweight 46, the distance between the output portion 76 provided on the crane 10 and the casing jack 14 located on the front side thereof is Since it can be kept small, the piping 78 for connecting the two is short.

  Next, the foundation pile creation method using the said apparatus is demonstrated.

  1) Unit mounting step: In this step, the hydraulic unit 12 is mounted on the crane 10. Specifically, as shown in FIG. 6, an appropriate number of weight members 46 a are detached from the uppermost stage of the counterweight 46 loaded on the crane 10. In the illustrated example, the upper three weight members 46a are detached while leaving only the lowermost weight member 46a. Then, a hydraulic unit mounting table 70 as shown in FIG. 8 is fixed on the lowermost weight member 46a, and the hydraulic unit 12 is set thereon. A connecting unit 60 is used for each fixing and desorption.

  The mounting of the hydraulic unit 12 on the upper swing body 20 in place of the counterweight 46 eliminates the need for a special space for installing the hydraulic unit 12, thereby reducing the required space for the entire apparatus. . This means that it is possible to perform construction in a narrow place with this apparatus.

  It should be noted that the size and number of weight members 46 a exchanged with the hydraulic unit 12 in the counterweight 46 can be appropriately set according to the size and weight of the hydraulic unit 12. For example, the entire counterweight 46 mounted on the crane 10 may be replaced with the hydraulic unit 12. Alternatively, the hydraulic unit 12 may include a weight for increasing its weight so that the hydraulic unit 12 can function as a substitute for the counterweight even if the hydraulic unit 12 is small.

  Further, the specific configuration of the hydraulic unit 12 is not limited as long as it includes at least a hydraulic source. In addition to this hydraulic power source, various control valves and other accessory devices may be incorporated.

  2) Connection step: In this step, a casing jack 14 is installed at a predetermined construction position outside the crane 10 (frontward in this embodiment), and the casing jack 14 is connected to the hydraulic unit 12 on the upper swing body 20. Connected to. Unit piping including the swivel joint 72 of the crane 10 is used for this connection.

  Specifically, an input portion 75 at the end of the upper swing body side pipe 73 provided on the upper swing body 20 side is connected to an output section (not shown) of the hydraulic unit 12, while the casing jack 14 An end portion of the pipe 78 to be guided is connected to an output portion 76 at an end portion of the lower traveling body side piping 74 provided on the lower traveling body 18 side. Accordingly, the casing jack 14 is sequentially passed from the hydraulic unit 12 through the input unit 75, the upper revolving unit side pipe 73, the swivel joint 72, the lower traveling unit side pipe 74, the output unit 76, and the pipe 78. A hydraulic supply system is established. The hydraulic pressure supply system enables the hydraulic pressure to be supplied from the hydraulic unit 12 to the casing jack 14, and this hydraulic pressure supply enables the casing jack 14 to be installed in a casing as described later.

  3) Construction process: In this construction process, the casing erection operation of the casing jack 14 driven by the supply of the hydraulic pressure, and the excavation and soil removal operation by the excavation bucket 50 accompanied by the swing drive of the upper swing body 20 in the crane 10. In parallel with this, the foundation pile construction construction by both cooperation is advanced.

  Specifically, the casing jack 14 receives the supply of hydraulic pressure from the hydraulic unit 12 so that a tubular casing 16 for covering the inner wall surface of the excavation hole formed by the excavation / deburring operation is installed. Perform the necessary actions. Specifically, an operation of gripping the casing 16 from the outside, an operation of rotating the gripped casing 16, and an operation of press-fitting the casing 16 into the ground G along the inner wall surface of the hole are performed simultaneously. The erection of the casing 16 prevents the inner wall surface of the excavation hole from collapsing.

  The excavation hole is formed by the crane 10. First, as shown in FIGS. 1 and 9, the excavation bucket 50 is suspended from the tip of the boom 40 via the suspension rope 43. And the opening / closing operation | movement of both the bucket shells 52 in this excavation bucket 50, the hoisting / lowering operation | movement of the said excavation bucket 50 by the said hanging rope 43 and the hanging winch 44, and the turning operation | movement of the said upper turning body 20 As a result of this combination, excavation of a hole in the vertical direction to the ground G in the inner region of the casing 16 and soil removal for the excavation are performed.

  While the casing jack 14 is being driven, the hydraulic unit 12 that supplies hydraulic pressure for driving the casing jack 14 rotates integrally with the upper rotating body 20, and the hydraulic unit 12, the casing jack 14, There will be no piping trouble between the two. This is because the casing jack 14 is not directly connected to the hydraulic unit 12 by normal piping but is connected to the output portion 76 on the lower traveling body 18 side of the crane 10. In other words, in this device, the casing jack 14 and the hydraulic unit 12 that is the hydraulic source are connected to the crane 10 via a unit pipe constructed using an existing swivel joint 72. The hydraulic pressure supply from the hydraulic unit 12 to the casing jack 14 and the turning drive of the upper turning body 20 can be executed simultaneously and smoothly without any troubles in the piping.

  In addition, after the installation of the casing 16 and the drilling of the inside thereof are completed, an appropriate structure (such as a reinforcing bar) is installed in the hole, and concrete is placed. After that, the casing 16 is pulled out and transferred using the crane 10.

It is a side view showing the whole foundation pile creation device containing the crane concerning an embodiment of the invention. It is a top view of the said crane. It is a front view of the crane. (A) is a top view which shows the main body frame of the lower traveling body of the said crane, (b) is the front view. It is the VV sectional view taken on the line of FIG.4 (b). It is a side view which shows the loading structure of the counterweight in the upper turning body of the said crane. It is a side view which shows the mounting structure of the hydraulic unit replaced with the said counterweight. (A) is a side view of a connecting unit included in the counterweight stacking structure, and (b) is a front view thereof. It is a figure which shows the construction state by the said foundation pile creation apparatus.

Explanation of symbols

G Ground 10 Crane 12 Hydraulic unit 14 Casing jack 16 Casing 18 Lower traveling body 20 Upper turning body 22 Body frame 24 Traveling crawler 30 Bearing 36 Turning frame 40 Boom 46 Counterweight 50 Excavation bucket (excavator)
56 counterweight loading table 60 connection unit 62 bracket (weight side connection part and mounting table side connection part)
64 links (connection members)
66 Through hole 68 Pin 70 Hydraulic unit mounting table 72 Swivel joint 73 Upper revolving unit side piping 74 Lower traveling unit side piping 75 Input unit 76 Output unit 78 Piping

Claims (7)

A swivel for connecting a lower traveling body, an upper revolving body that is turnably mounted on the lower traveling body, a hydraulic circuit incorporated in the lower traveling body, and a hydraulic circuit incorporated in the upper revolving body A hydraulic work method using a crane comprising a joint and a counterweight detachably mounted on the upper swing body,
A unit mounting step of mounting a hydraulic unit including a drive source different from the hydraulic circuit incorporated in the crane on the upper swing body instead of at least a part of the counterweight;
A connecting step of installing a hydraulic working device outside the crane and connecting the hydraulic working device to the hydraulic unit via a swivel joint of the crane;
The crane and the hydraulic working device are caused to cooperate by driving the hydraulic working device by supplying hydraulic pressure from the hydraulic unit to the hydraulic working device in parallel with the turning drive of the upper swing body in the crane. A hydraulic work method using a crane, characterized by including a construction process for performing specific construction. In the hydraulic working method using the crane according to claim 1,
In the construction step, the excavator is suspended from a boom provided to be able to rise and fall on the upper swing body of the crane, and an operation of installing a tubular casing on the ground using a casing jack as the hydraulic working device, Hydraulic work using a crane characterized in that the work of excavating a hole in the ground and discharging the earth and sand is paralleled by a combination of an excavator drive, a boom raising drive and a swing drive of the upper swing body Method. A crane in which a hydraulic circuit is incorporated and a hydraulic unit including a hydraulic source different from the hydraulic circuit is detachably mounted,
A lower traveling body,
An upper revolving unit mounted on the lower traveling unit so as to be able to swivel;
A swivel joint for connecting a hydraulic circuit incorporated in the lower traveling body and a hydraulic circuit incorporated in the upper swing body;
A counterweight mounted on the upper swing body, at least a part of which is replaceable with the hydraulic unit;
A unit piping for outputting the hydraulic pressure generated by the hydraulic unit mounted on the upper swing body instead of the counterweight to the outside of the crane, and
The unit piping is installed outside the crane in the lower traveling body, and an input portion provided at a position connectable to the hydraulic unit mounted on the upper rotating body instead of the counterweight in the upper rotating body. A crane on which a hydraulic unit can be mounted, which is provided at a position connectable to a hydraulic working device and has an output unit connected to the input unit via the swivel joint. In the crane which can mount the hydraulic unit according to claim 3,
At the front of the upper swing body, a boom that can be raised and lowered by rotating about a left-right axis is mounted,
The lower traveling body has a main body frame that supports the upper swing body, and a traveling crawler provided on the left and right of the main body frame,
The crane capable of mounting a hydraulic unit, wherein the output portion of the unit pipe is provided on the front side of the main body frame. A crane on which the hydraulic unit according to claim 3 or 4 can be mounted;
This crane includes a hydraulic source different from the hydraulic circuit of the crane, can be mounted on the upper swing body of the crane instead of at least a part of the counterweight of the crane, and the crane unit piping in the mounted state A hydraulic unit connectable to the input section of
A hydraulic working device comprising: a hydraulic working device that is connectable to an output portion of the crane and is driven to perform a specific work by a hydraulic pressure supplied from the hydraulic unit through the unit pipe. . The hydraulic working device according to claim 5, wherein
The crane includes a boom for lifting an excavator that is provided on the upper swing body so as to be undulated, excavates a hole in the ground, and grabs soil.
The hydraulic working device includes a casing jack in which a tubular casing is built in the ground so as to cover an inner peripheral surface of the hole. The hydraulic working device according to claim 5 or 6,
A hydraulic unit mounting table for mounting the hydraulic unit;
The counterweight is mounted in a state of being stacked on the upper swing body, and each of the plurality of weight members each having a weight side connecting portion, and an arbitrary number of weight members among these weight members include the hydraulic pressure. A connecting member for connecting the weight side connecting portions of the weight members adjacent to each other so as to be detachable as a counterweight exchanged with the unit, and the hydraulic unit mounting table is configured to rotate the upper part of the weight member. A mounting table side connecting portion that can be connected to the weight side connecting portion of the uppermost weight member while being mounted on the uppermost weight member remaining on the body via the connecting member. A hydraulic working device comprising:

Images