JP4838284B2 - Tower crane - Google Patents

Tower crane Download PDF

Info

Publication number
JP4838284B2
JP4838284B2 JP2008135602A JP2008135602A JP4838284B2 JP 4838284 B2 JP4838284 B2 JP 4838284B2 JP 2008135602 A JP2008135602 A JP 2008135602A JP 2008135602 A JP2008135602 A JP 2008135602A JP 4838284 B2 JP4838284 B2 JP 4838284B2
Authority
JP
Japan
Prior art keywords
mast
climbing
support
locking pin
cylinder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2008135602A
Other languages
Japanese (ja)
Other versions
JP2009280367A (en
Inventor
幸一 小西
勝美 山縣
康之 渡邊
正男 相馬
利章 石井
Original Assignee
株式会社コシハラ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社コシハラ filed Critical 株式会社コシハラ
Priority to JP2008135602A priority Critical patent/JP4838284B2/en
Publication of JP2009280367A publication Critical patent/JP2009280367A/en
Application granted granted Critical
Publication of JP4838284B2 publication Critical patent/JP4838284B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Description

  The present invention relates to a tower crane provided with a climbing device.

  Conventionally, tower cranes that are mainly used in construction work need to increase the lift in accordance with the progress of construction when building construction work. Many types of cranes, such as a hoisting machine, and a crane part having a jib are raised by adding a mast to a required height position. Many techniques have already been disclosed and put into practical use for raising the crane (generally referred to as “climbing”).

  For the climbing operation of the crane section (crane body), a method using a hydraulic cylinder is widely used. In a climbing apparatus that performs this climbing operation, as is known, for example, from Patent Document 1 or Patent Document 2, an outer mast that is mounted on a mast and is guided and supported by a crane portion is also externally fitted to the mast. A hydraulic cylinder for climbing is provided so as to straddle the lower support attached so as to take a reaction force against the mast when it is lifted. A hydraulic control device is installed at a landing attached to the outer mast, and hydraulic oil is supplied from a hydraulic pump incorporated in the hydraulic control device to the hydraulic cylinder for climbing. The crane is operated with a reaction force against the mast by the operation and the operation of fitting / removing the locking pin (kannuki) for supporting the crane main body, which is provided on the outer mast and the lower support and is alternately inserted into and removed from the support hole of the mast. The climbing operation of the main body is made.

  In a tower crane having such a conventional climbing function, in order to support the crane body with respect to the mast, a so-called outer mast is divided into an upper mast and a lower support body that support the crane body. Since it is necessary to be configured and to be able to move each in a stable posture along the mast, the structure becomes complicated. In such a configuration, the workability deteriorates because the outer mast and the lower support are separated from each other during the climbing work. As a means for improving this, the outer mast and the lower support are integrated into a single structure for climbing. In Japanese Patent Application Laid-Open No. H11-260260, a structure that can be moved up and down by a hydraulic cylinder is proposed in Patent Document 3, and an improved structure is proposed in Patent Document 4.

  The climbing device described in Patent Document 3 is a guide rail in which locking pieces (receiving members) are arranged at a predetermined pitch instead of the locking pin holes for receiving and supporting the reaction force during climbing on the mast side. Is provided along the side of the mast, and the upper and lower locking pins provided on the outer mast side are alternately engaged with this locking piece to counteract the mast and move up and down by expansion and contraction of the hydraulic cylinder. Has been.

  Further, the climbing device described in Patent Document 4 is provided with a climbing device including a climbing cylinder and a pair of upper and lower locking pins that are detachable with respect to a holding hole provided in the mast. A lower locking pin is detachably attached to the mast locking hole on the slider attached to the end, and the slider is provided along a pair of guide rails provided on the outer surface of the outer mast when the climbing cylinder is operated. It is a structure guided slidably.

Japanese Patent No. 2646363 Japanese Examined Patent Publication No. 63-32715 No. 4-50306 Utility Model Registration No. 3135550

  However, in the climbing device according to Patent Document 3, a guide rail having locking pieces (receiving members) arranged at a predetermined pitch on the side surface of the mast is provided, and the upper and lower portions provided on the outer mast side with respect to the locking pieces. Since the locking pins are alternately engaged and moved up and down by expansion and contraction of the hydraulic cylinder, the shape of the mast has a special structure and is not compatible with a general crane mast. In addition, this climbing device is provided with a slider with a guide roller at the tip of its piston rod, and a pair of guide rails are parallel to the outer mast at a required interval in order to obtain smoothness when the hydraulic cylinder for climbing is expanded and contracted. Although the structure is such that the slider is guided along the guide rail, an irregular load is inevitably applied to the guide roller during climbing, resulting in a large resistance, resulting in lack of smooth operation. There is a problem.

  Further, in the climbing crane disclosed in Patent Document 4, the outer mast is formed into a cylindrical shape, and a slider attached to the lower end of the rod of the climbing cylinder attached to the outer surface thereof is provided along the outer surface of the outer mast. The guide part is extended on both sides of the slider and is guided in a stable posture by the guide rail. If the stable posture is not maintained, the climbing cylinder will be overloaded and a large capacity will be required. In addition, since the outer mast is specified as a cylindrical mast and the stability is ensured, the outer mast becomes large in size, resulting in a problem that the overall weight is excessive and the cost is increased.

  The present invention has been made in order to solve such problems, and is provided with a climbing means that can be reduced in weight and function reasonably without being limited to the shape of the crane mast by compacting the climbing apparatus. The purpose is to provide a tower crane.

In order to achieve the above-described object, the tower crane of the present invention includes:
In other work lanes for raising and lowering the crane unit using the climbing cylinder consisting of a hydraulic cylinder,
A mast upstanding, and an outer mast for supporting a is fitted supporting the crane unit at the top of the mast, the said outer mast, and the climbing cylinder, and Hamada' possible upper locking pin relative to the mast the elevating support taking a reaction force on the mast during expansion and contraction of climbing cylinders are vertical guide is disposed along one side surface, the climbing cylinder, mounted proximal end to the outer mast top is, the lift support is coupled the movable end of the climbing cylinder at the bottom, said outer mast is guided by the guide rollers that are attached is vertically movably supported relative to the lower locking pin mast to the lower Hamada' capable provided, and the upper part inside of the pair of vertical members which constitute the elevating support, a pair of temporary holding member for temporarily holding the climbing cylinder set And it is characterized in that it is.

  In the present invention, the outer mast is formed in a frame structure, and the climbing cylinder and the lifting support are incorporated along a central longitudinal axis on one side surface of the outer mast, and the lifting support supports the guide roller during operation of the climbing cylinder. It is good to be provided so as to be movable in the vertical direction.

Further, the lift support, said pair of longitudinal members at required intervals are connected together by a connecting member at the bottom is arranged parallel to the vertical direction, the support for supporting the lower locking pin on the connecting member It is preferable that a bracket for connecting the portion and the movable end of the climbing cylinder is provided.

The elevating support may have a configuration in which outer portions of the pair of vertical members form an elevating guide rail .

  According to the present invention, the climbing function for changing the lift by changing the crane part can be performed with a single outer mast by rationally incorporating the lifting support in the outer mast that supports the crane part. It can be installed and used without using a special structure mast. Therefore, versatility is enhanced as a tower crane, and the structure is easily formed, so that it is possible to reduce the cost.

In addition, the outer mast has an elevating support that is built in the outer mast to receive the reaction force against the mast during climbing, but is normally supported by the mast without substantially receiving the load. Therefore, there is an advantage that the own weight can be reduced and the weight can be reduced. Further, since a pair of temporary holding members for temporarily holding the climbing cylinder is provided inside the upper part of the lifting support body, the climbing cylinder can be easily handled together with the lifting support body when the climbing mechanism is disassembled and assembled.

  Next, specific embodiments of the tower crane according to the present invention will be described with reference to the drawings.

  1 is an overall schematic diagram of a tower crane according to an embodiment of the present invention, FIG. 2 is a schematic perspective view of the main part of the tower crane, FIG. 3 is a front view of the main part of the tower crane, 4 is a right side view of FIG. 3, FIG. 5 is a view taken along line AA of FIG. 3, FIG. 6 is a view taken along line BB of FIG. 4, and FIG. FIG. 8A shows a CC view (c) in the right side view (b) and the front view, and FIG. 8 shows a DD view in FIG.

  The tower crane 1 according to this embodiment includes a mast 3 that is supported upright at the center of the upper surface of a support base 2 that is formed by extending legs in four directions, and has a plurality of mast segments 3a up to a required height. The outer mast 20 having a climbing mechanism 10 that is externally fitted and supported on the upper portion of the outer mast, and a crane main body 40 that is supported on the top of the outer mast 20 via the swivel wheel 8.

  The mast 3 is supported by a stay 4 from four directions on a mounting seat on the center upper surface of the support base 2 and a base mast segment 3a 'is erected, and a mast having a predetermined length is disposed above the base mast segment 3a'. The segment 3a is configured by bolting sequentially and adding to the required height. The mast segment 3a constituting the mast 3 is provided with a plurality of holding holes 5 for performing the climbing operation of the crane body 40 at predetermined intervals in the vertical direction. Further, in this embodiment, guide rails 6 (see FIGS. 2 to 6) are attached to the peripheral side surface of the cylindrical mast 3 in the axial direction at a plurality of locations when the outer mast 20 is climbed. In FIG. 1, the guide rail 6 is not shown.

  The outer mast 20 is supported on the top of the mast 3 by support means to be described later, and a turning wheel frame 7 is attached to the upper top surface. The crane main body 40 is connected to the turning wheel frame 7 via the turning wheel 8. Are supported and formed into a tetrahedron of the framework structure with the required height. In the outer mast 20, an upper horizontal frame member 21 and a lower horizontal frame member 22 are connected to each other by four vertical members 23 arranged in four directions at a predetermined interval. The climbing mechanism 10 is incorporated in the center of one side surface of the outer mast 20. The swivel wheel frame 7 is mounted on a support seat 24 formed to project from the upper surface of each corner of the upper horizontal frame member 21, and the swivel wheel 8 is attached to the swivel wheel frame 7, and the crane body 40 is disposed at the upper part. The revolving frame 41 is supported.

  At the upper and lower positions inside the four corners of the outer mast 20, guide rollers 25 having V-shaped grooves are respectively attached by brackets 25 a and 25 b that are attached in the centripetal direction, and these guide rollers 25 are arranged on the outer periphery of the mast 3. The outer mast 20 axial center coincides with the axial center of the mast 3 and can be climbed.

  The climbing mechanism 10 is vertically installed with a base end supported by an upper locking pin operating means 11 attached to the upper horizontal frame member 21 of the outer mast 20 and a bracket 21b attached to the lower surface of the upper horizontal frame member 21. A climbing cylinder 12 that is connected to a piston rod 12a (movable part) of the climbing cylinder 12 and supported to be supported when the piston rod 12a is expanded and contracted. It is comprised with the guide means 15 of the raising / lowering support body which guides raising / lowering along. The elevating support 13 is provided with a lower locking pin operating means 16.

  In the upper locking pin operating means 11, as shown in FIG. 7, the upper locking pin 11 a is located at the center position of the upper horizontal frame member 21 on the side surface of the outer mast 20 where the climbing mechanism 10 is disposed. A support boss hole 21a provided in a direction perpendicular to the core wire is slidably supported. At the time of insertion, the tip is inserted into the holding hole 5 provided in the mast 3, and the load applied to the outer mast 20 is increased. Supported by The upper locking pin 11a is connected to a bell crank link 11b pivotally supported at the base by a bracket 21c provided on the front side surface of the upper horizontal frame member 21 at the rear end, and the bell crank link 11b is reduced in size. By operating with a hydraulic cylinder 11d, the mast 3 can be fitted into and removed from the holding hole 5.

  The elevating support 13 has a total length shorter than the height of the outer mast 20 and a pair of vertical members 13a, 13a arranged in a vertical direction at a required interval, and a lower portion of the pair of vertical members 13a, 13a is arranged. A bracket 14 for connecting to the climbing cylinder 12 is attached to a lower locking pin support boss 13c that is fixedly connected by the horizontal connecting member 13b and is attached to the central portion of the horizontal connecting member 13b to form an integral independent structure. ing.

  A lower locking pin operating means 16 is attached to the horizontal connecting member 13 b of the lifting support 13. The lower locking pin operating means 16 is a lower locking pin that is slidably inserted into a lower locking pin insertion hole 13c 'that extends through the lower locking pin support boss 13c in a direction perpendicular to the mast axis. It comprises a pin 16a, a lower locking pin operation link 16c for engaging and disengaging the lower locking pin 16a with the holding hole 5 of the mast 3, and an operating cylinder 16d for operating the lower locking pin operation link 16c. ing. The lower locking pin 16a is connected to an operation link 16c whose rear end 16b is pivotally supported at the distal end of a mounting arm 16e provided to protrude forward from the lateral connecting member 13b. The lower locking pin 16a can be fitted into and removed from the holding hole 5 of the mast 3 by connecting the intermediate position of 16c to the operation cylinder 16d and performing a raising / lowering operation.

  In the lifting support 13 thus configured, the pair of vertical members 13a and 13a are formed in a rectangular tube shape in this embodiment, and the outer peripheral side portion thereof is guided by the guide means 15 provided on the outer mast 20. Guided up and down.

  As shown in FIGS. 3, 5, and 7, the guide means 15 is a pair of orthogonally arranged at a predetermined interval from the center position of the lower horizontal frame member 22 of the outer mast 20 to the left and right. The supporting members 26 and 26 are provided with guide rollers 15a and 15a having hooks so as to be rotatable in two pairs with a required vertical distance therebetween, and these guide rollers 15a and 15a are constituted by the vertical members 13a and 15a of the elevating support 13, respectively. The guide rollers 15a and 15a are vertically guided by the guide rollers 15a and 15a so that the support 13 is lifted vertically. As shown in FIG. 8, a guide roller 37 is supported by a support member 36 on the lower side of the outer mast 20 on the side where the elevating support 13 is disposed, and these guide rollers 37 are provided as guide rails attached to the mast 3. 6 is brought into contact with both side surfaces of the outer mast so that the axial center of the outer mast is kept normal.

  The lifting support 13 configured in this manner is connected to the connecting bracket 14 attached to the upper portion of the lateral connecting member 13b with the end of the piston rod 12a of the climbing cylinder 12 connected to the pin by the expansion / contraction operation of the climbing cylinder 12. It can be moved up and down inside the outer mast 20.

  On the other hand, the central position of the upper horizontal connecting member 21 and the lower horizontal connecting member 22 is connected by a vertical member 27 at a position opposite to the mounting surface of the climbing mechanism 10 in the outer mast 20. A boss that supports the auxiliary support locking pin 28 is provided at an intermediate position at right angles toward the center of the mast 3. The auxiliary support locking pin 28 is slidably inserted into the support hole provided in the support boss 27a of the auxiliary support locking pin 28, and is attached to the mast 3 by the operation lever 28b connected to the rear end portion. The front end portion of the auxiliary support locking pin 28 is detachable from the provided holding hole 5 '. The auxiliary support locking pin 28 is provided at a position where the upper locking pin 11a and the lower locking pin 16a are held in the holding hole 5 for locking operation by the climbing mechanism 10 in which the outer mast 20 is provided on the mast 3. In a state where it is engaged and supported, it is provided correspondingly so as to engage with the holding hole 5 ′ provided on the other side.

  In addition, brackets 29 are suspended from three sides of the lower lateral connecting member 22 excluding the placement surface of the climbing mechanism 10 at the lower position of the outer mast 20, and manual jacks 30 are respectively laterally attached to the brackets 29. It is mounted to work inward. This manual jack 30 is a screw-type jack, and a guide rail 6 in which a receiving seat at the tip of the screw shaft is attached to the mast 3 (in the embodiment, angle iron is attached by welding the flange end to the outer surface of the mast. )) So as to contact the side surface and receive a reaction force.

  The outer mast 20 is provided with climbing work scaffolds 32 and 32 'along the outer periphery of the upper part and the lower part. A hydraulic unit 33 is mounted on the upper scaffold 32 so that the hydraulic cylinder 11d of the climbing cylinder 12 and the upper locking pin operating means 11 and the hydraulic cylinder 16d of the lower locking pin operating means 16 can be operated. . Further, an auxiliary scaffold 34 is attached to the lower end of the elevating support 13 so that the lower locking pin 16a can be fitted and removed, and the auxiliary scaffold 34 is connected to the lower scaffold 32 'of the outer mast 20. Is disconnected.

  As shown in FIG. 1, the crane main body 40 includes a revolving frame 41 supported on the top of the outer mast 20 via a revolving wheel, and a jib support frame 42 (gantry) erected on the revolving frame 41. A jib 43 whose base end is pivotally mounted on the revolving frame 41 and extends forward, a hoisting machine 45 for driving the hoisting rope 44 for hoisting the jib 43, and a hoisting machine 47 for operating the hoisting rope 46; It has.

  The tower crane 1 of the present embodiment configured as described above has a structure in which the crane main body 40 located at the top of the mast 3 is supported by the outer mast 20 having a single structure. Can do. In order to raise (climb) the crane body 40 in order to increase the working head according to the progress of the lifting work, the mast segment 3a is installed by driving the hoisting machine 45 and the hoisting machine 47 mounted on the crane body 40. The crane body 40 is lifted and connected to the top of the mast 3, and then the climbing mechanism 10 is operated to raise the crane body 40 via the outer mast 20.

  In this climbing operation, first, when the upper locking pin 11a is operated by the hydraulic cylinder 11d of the upper locking pin operating means 11 and the connecting side of the bell crank link 11b with the cylinder rod is pulled back, the bell crank link 11b. The upper locking pin 11a connected to the other end of the mast 3 is pulled out, and the engagement between the holding hole 5 of the mast 3 and the tip of the upper locking pin 11a is cut off. Thereafter, the auxiliary locking pin 28 is pulled out by the attached operation lever 28b, and the engagement with the holding hole 5 'of the mast 3 is broken on the side opposite to the upper locking pin 11a. Next, the climbing cylinder 12 is operated to advance the stroke by one stroke in the direction in which the piston rod 12a is pushed out. Then, the lifting support 13 connected to the end of the piston rod 12a via the bracket 14 is engaged with the holding hole 5 at the lower position of the mast 3 with the incorporated lower locking pin 16a. A reaction force is applied to the lower locking pin 16a, and the outer mast 20 is pushed up along the mast 3 (as shown by a two-dot chain line in FIGS. The outer mast 20 rises while remaining on the mast 3 side for the stroke P).

  At this time, the outer mast 20 and the lifting support 13 are connected to each other by the climbing cylinder 12, and guides of the guide means 15 in which both vertical members 13 a and 13 a of the lifting support 13 are attached to the outer mast 20. Since the rollers 15a and 15a are guided in the vertical direction, the climbing cylinder 12 is extended in a stable posture by the elevating support 13 held along the mast 3 by the lower locking pin 16a. Guide rollers 25 attached to the inner four corners of the outer mast 20 are guided by the guide rail 6, and the outer mast 20 is lifted while maintaining a correct posture.

  Thus, when the crane body 40 is pushed up through the outer mast 20 for one stroke of the climbing cylinder, the upper locking pin 11a is inserted into and engaged with the holding hole 5 at the corresponding position of the mast 3. Next, the operating cylinder 16d of the lower locking pin operating means 16 is operated, and the lower locking pin 16a is pulled out from the holding hole 5 of the mast 3 by the operation link 16c to disconnect the engagement. When the lower locking pin 16a becomes free in this way, the lifting support 13 is freed by removing the load. Therefore, when the climbing cylinder 12 is reversely operated and the piston rod 12a is contracted, the lifting support 13 is moved to the outer mast. The guide means 15 attached to 20 moves up while maintaining a vertical posture. Therefore, the lower locking pin 16 a is operated to be inserted again into the holding hole 5 at the corresponding position of the mast 3 to hold the lifting support 13 on the mast 3.

  Thereafter, in the above-described manner, in accordance with one stroke of the climbing cylinder 12, the operation of alternately engaging and disengaging the upper locking pin 11a and the lower locking pin 16a in the holding hole 5 of the mast 3 from the bottom to the top is repeated. The mast segment 3a is added and the outer mast 20 is climbed to the required height position. In addition, after the crane main body 40 is climbed to a required position, the auxiliary locking pin 28 is engaged with the holding hole 5 ′ of the mast 3 at the position to securely hold the outer mast 20 with respect to the mast 3. Moreover, at the time of the climbing operation, the manual jacks 30 attached to the outer mast 20 are all unfixed so as not to prevent the upward movement. After the climbing is finished, the manual jack 30 is operated and set so that the axis of the outer mast 20 matches the axis of the mast. By doing so, the cylindrical mast 3 can be aligned with ease even if there is a deviation in the outer dimensions, and the displacement in the rotational direction with respect to the guide rail 6 by the manual jack 30. Therefore, the crane main body 40 can turn stably during operation.

Moreover, in the said embodiment, as shown in FIG.7 (c), the climbing cylinder 12 which connects this raising / lowering support body 13 and the upper horizontal frame member 21 of the outer mast 20 is shown by the upper part of the raising / lowering support body 13. As shown in FIG. A pair of holding part pieces (temporary holding members) 48 for holding the upper part (base end part) are attached to the inner sides of both the vertical members 13a and 13a so that the climbing cylinder can be lifted and lowered when the climbing mechanism 10 is disassembled and assembled. 13 so that it can be handled easily. The holding piece 48 is formed so as to hold the cylinder on its side surface, and is detachable from the vertical member 13 via an attachment piece 49. By doing so, it is possible to prevent the vehicle from falling when removed from the upper horizontal frame member 21.

  In the present invention, the climbing cylinder 12 in the attached climbing mechanism 10 and the elevating support 13 for taking a reaction force against the mast 3 are arranged on the same axis, so that the thrust of the climbing cylinder 12 is effectively used. There is an advantage that can be acted on.

  In the above description, a tower crane using a cylindrical mast has been described, but a mast having a frame structure with a square cross-sectional shape can be adopted. In this case, instead of the holding hole, a beam structure portion for receiving and holding the locking pin may be disposed in the vertical direction at a required interval.

Overall schematic diagram of tower crane according to one embodiment of the present invention Outline perspective view of main part of tower crane Front view of main part of tower crane Right side view of FIG. A-A view of FIG. BB view of FIG. CC front view (c) in front view (a), right side view (b) and front view showing climbing mechanism DD view of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tower crane 3 Mast 6 Guide rail 10 Climbing mechanism 11a Upper locking pin 12 Climbing cylinder 13 Lifting support 15 Guide means 16 Lower locking pin operation means 16a Lower locking pin 20 Outer mast 21 Upper horizontal frame member 22 Lower horizontal frame Member 23 Vertical member 25 Guide roller 40 Crane body

Claims (4)

  1. In other work lanes for raising and lowering the crane unit using the climbing cylinder consisting of a hydraulic cylinder,
    A mast upstanding, and an outer mast for supporting a is fitted supporting the crane unit at the top of the mast, the said outer mast, and the climbing cylinder, and Hamada' possible upper locking pin relative to the mast the elevating support taking a reaction force on the mast during expansion and contraction of climbing cylinders are vertical guide is disposed along one side surface, the climbing cylinder, mounted proximal end to the outer mast top is, the lift support is coupled the movable end of the climbing cylinder at the bottom, said outer mast is guided by the guide rollers that are attached is vertically movably supported relative to the lower locking pin mast to the lower Hamada' capable provided, and the upper part inside of the pair of vertical members which constitute the elevating support, a pair of temporary holding member for temporarily holding the climbing cylinder set Tower crane, characterized in that it is.
  2.   The outer mast is formed in a frame structure, and the climbing cylinder and the lifting support are assembled along a central longitudinal axis of one side surface thereof, and the lifting support is vertically moved by the guide roller when the climbing cylinder is operated. The tower crane of Claim 1 provided so that a movement is possible.
  3. The lift support has a support portion and the pair of longitudinal members at a required interval vertically integrally connected by a connecting member at the bottom is arranged parallel to, for supporting the lower locking pin into the coupling member on the The tower crane of Claim 1 or 2 with which the bracket which connects the movable end of the said climbing cylinder is provided.
  4. The tower crane according to any one of claims 1 to 3, wherein the elevating support has a configuration in which outer portions of the pair of vertical members form an elevating guide rail.
JP2008135602A 2008-05-23 2008-05-23 Tower crane Active JP4838284B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008135602A JP4838284B2 (en) 2008-05-23 2008-05-23 Tower crane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008135602A JP4838284B2 (en) 2008-05-23 2008-05-23 Tower crane

Publications (2)

Publication Number Publication Date
JP2009280367A JP2009280367A (en) 2009-12-03
JP4838284B2 true JP4838284B2 (en) 2011-12-14

Family

ID=41451262

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2008135602A Active JP4838284B2 (en) 2008-05-23 2008-05-23 Tower crane

Country Status (1)

Country Link
JP (1) JP4838284B2 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5599056B2 (en) * 2010-09-28 2014-10-01 株式会社コシハラ Climbing method and climbing equipment
CN102616676B (en) * 2012-04-01 2014-01-01 中联重科股份有限公司 Guiding supporting device of inner climbing frame, inner climbing frame and tower crane
CN102616679B (en) * 2012-04-16 2013-09-04 中联重科股份有限公司 Tower crane, climbing frame thereof and climbing frame installation method
CN103420280A (en) * 2012-05-18 2013-12-04 李宜君 Climbing cage structure with positioning device and of tower-type crane
CN104444856B (en) * 2014-11-14 2017-12-15 重庆倍精科技研发有限公司 Tower crane locking main frame
CN105540503B (en) * 2016-03-01 2018-04-13 重庆海装风电工程技术有限公司 A kind of climbing device
CN105858402A (en) * 2016-05-03 2016-08-17 昆明开物机械制造有限公司 Hydraulic jacking working platform for construction hoist
CN107724670B (en) * 2017-11-14 2020-05-08 中建三局第一建设工程有限责任公司 Frame side-top type internal climbing tower crane non-inverted beam climbing method based on top mold system
CN107857201B (en) * 2017-11-14 2019-09-06 中建三局第一建设工程有限责任公司 A kind of inside-climbing tower crane does not fall beam and climbs method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS612385A (en) * 1984-06-15 1986-01-08 Hitachi Ltd Method of producing printed circuit board
JPH01129193A (en) * 1987-11-16 1989-05-22 Toshiba Corp Control rod assembly
JPH09242713A (en) * 1996-03-06 1997-09-16 Akira Hashimoto Air cylinder with guide using linear guide

Also Published As

Publication number Publication date
JP2009280367A (en) 2009-12-03

Similar Documents

Publication Publication Date Title
US10023448B2 (en) Lift truck with mast
EP3208226B1 (en) Lift crane with movable counterweight
CN103321581B (en) Inland rig
DE60111852T2 (en) Self-lifting platform device
EP2354077B1 (en) Mobile crane having counterweight
US6557817B2 (en) Wall climbing form hoist
ES2637626T3 (en) Lifting unit to ascend and descend a scaffold
CA2666890C (en) Construction apparatus with extendable mast and method for operating such a construction apparatus
US4102463A (en) Transporter for slab casting tables
JP5675041B2 (en) How to raise a crane boom
EP3099622B1 (en) Lift crane with improved movable counterweight
US8701904B2 (en) Crane vessel
ES2660137T3 (en) Platform support device for lifting loads or people throughout a work
EP2253575B1 (en) Crane backstay spreader
CN105263849B (en) Tower is jacked from setting up
JP2013146547A (en) Composite lifting stage
EP2246289B1 (en) Crane with boom raising assist structure
EP2530046B1 (en) Stepless luffing mechanism for super-lifting counterweight of crawler crane and operating method thereof
EP3337752B1 (en) Mobile crane and method for angling a main boom extension in relation to a main boom of a mobile crane
CN103359626B (en) A kind of Marine riser crane
DE102013011489A1 (en) Tower Crane
CN205294665U (en) Jack -up tower crane based on engineering mechanics
WO2017020533A1 (en) Comprehensive pile driver
US20190316367A1 (en) Mason's adjustable chimney-platform arrangement
CN108431346B (en) Hanging basket device

Legal Events

Date Code Title Description
A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20110526

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20110614

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20110815

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20110830

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20110929

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20141007

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Ref document number: 4838284

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250