JP6428740B2 - Gantry assembly apparatus and gantry assembly method - Google Patents

Gantry assembly apparatus and gantry assembly method Download PDF

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JP6428740B2
JP6428740B2 JP2016197880A JP2016197880A JP6428740B2 JP 6428740 B2 JP6428740 B2 JP 6428740B2 JP 2016197880 A JP2016197880 A JP 2016197880A JP 2016197880 A JP2016197880 A JP 2016197880A JP 6428740 B2 JP6428740 B2 JP 6428740B2
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compression
gantry
link
tension
distal
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JP2018058674A (en
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泰彦 村山
泰彦 村山
洋平 小川
洋平 小川
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コベルコ建機株式会社
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Description

  The present invention relates to a gantry assembly apparatus and a gantry assembly method.
  Patent Document 1 describes a conventional gantry (A frame in the same document). The gantry described in the same document is stored in the upper swing body while being attached to the upper swing body (see FIG. 4 of the same document). The gantry includes a compression member (front leg in the same document) and a tension member (rear lower leg and rear upper leg in the same document).
JP 2003-81579 A
  The gantry in a state separated from the upper swing body may be attached to the upper swing body. In this case, if the gantry is lifted substantially horizontally and the gantry is attached to the upper swing body, the tension member may hang down from the compression member, and the tension member may interfere with the upper swing body, for example. Therefore, in a state where the gantry is lifted substantially horizontally, the gantry cannot be attached to the upper swing body. Therefore, it is conceivable that the compression member is attached to the upper swing body while the gantry is lifted up, the compression member is lowered around the gantry foot, and the tension member is attached to the upper swing body.
  In this case, since the gantry is set up, there is a problem that a high lift is required for the companion machine for lifting the gantry. Further, when the tension member swings with respect to the compression member, there is a problem that the compression member and the tension member come into contact with each other and are damaged. Further, since it is necessary to operate the companion machine in order to adjust the position of the tension member with respect to the upper swing body, it is difficult to attach the tension member to the upper swing body.
  Therefore, the present invention can attach the gantry to the upper swing body with the gantry suspended substantially horizontally, can suppress damage to the gantry, and can easily attach the tension member to the upper swing body. It aims to provide a method.
  A gantry assembling apparatus as a first means includes a main body of a construction machine, a compression member, a tension member, and an adjustment support portion. The compression member is attached to the main body so as to be raised and lowered. The tension member is attached to a distal end portion of the compression member and can be attached to the main body. The adjustment support portion supports the tension member with respect to the compression member. The tension member includes a distal end side link and a proximal end side link. The distal end side link is rotatably attached to the distal end portion of the compression member. The proximal end side link is rotatably connected to the distal end side link. The adjustment support portion is configured to be capable of adjusting a support position of the base end side link with respect to the compression member.
  The gantry assembling method of the second means is a method using a gantry assembling apparatus. The gantry assembling apparatus includes a main body of a construction machine, a compression member, a tension member, and an adjustment support portion. The compression member is attached to the main body so as to be raised and lowered. The tension member is attached to a distal end portion of the compression member and can be attached to the main body. The adjustment support portion supports the tension member with respect to the compression member. The tension member includes a distal end side link and a proximal end side link. The distal end side link is rotatably attached to the distal end portion of the compression member. The proximal end side link is rotatably connected to the distal end side link. The gantry assembling method includes an attaching step and a position adjusting step. The attaching step is a step of attaching a base end portion of the compression member to the main body in a state where the tension member is held by the compression member. The position adjusting step is a step of changing a support position of the tension member with respect to the compression member after the attaching step.
  By each of the first means and the second means, the gantry can be attached to the upper swing body with the gantry being lifted substantially horizontally, the gantry can be prevented from being damaged, and the tension member can be easily attached to the upper swing body. Can be attached.
It is the figure which looked at the gantry assembly apparatus from the side. It is a figure which shows the front-end | tip part etc. of the gantry 20 shown in FIG. It is F3-F3 arrow sectional drawing of FIG. It is F4-F4 arrow sectional drawing of FIG. It is a figure which shows the state by which the gantry 20 shown in FIG. 1 was lifted. It is a figure which shows the state by which the gantry 20 shown in FIG. 1 was assembled.
  With reference to FIGS. 1-6, the gantry assembly apparatus 1 shown in FIG. 1 is demonstrated.
  The gantry assembly device 1 is a device that facilitates assembly (attachment) of the gantry 20 to the upper swing body 10 (main body). The gantry assembly device 1 is a device that facilitates disassembly (removal) of the gantry 20 from the upper swing body 10. The gantry assembly device 1 is provided in a construction machine. This construction machine is a machine that performs work such as construction work, for example, a crane, for example, a mobile crane, for example, a crawler crane, and may be a wheel crane, for example. The gantry assembly device 1 includes an upper swing body 10 and a gantry 20.
  The upper turning body 10 (main body) is turnable with respect to the lower traveling body L, and is attached to the lower traveling body L via a turning device. A boom B or the like is attached to the upper swing body 10. The upper swing body 10 includes a compression member mounting portion 11 having a pin hole and a tension member mounting portion 13 having a pin hole. The longitudinal direction of the upper swing body 10 is defined as the front-rear direction X. In the front-rear direction X, the side (or direction) from the tension member mounting portion 13 toward the compression member mounting portion 11 is defined as the front side X1, and the opposite side is defined as the rear side X2. A horizontal direction orthogonal to the front-rear direction X is defined as a lateral direction Y. A direction perpendicular to the front-rear direction X and the horizontal direction Y is defined as a vertical direction Z. In the vertical direction Z, a side from the lower traveling body L toward the upper swing body 10 is an upper side Z1, and the opposite side is a lower side Z2.
  The gantry 20 raises and lowers the boom B. The gantry 20 is attached to the upper swing body 10 and is disposed on the rear side X2 from the boom B. The gantry 20 includes a compression member 30, a tension member 50, a holding part 60, and an adjustment support part 70.
  The compression member 30 is attached to the upper swing body 10 so as to be raised and lowered. The compression member 30 is rotatable about the rotation axis in the lateral direction Y with respect to the upper swing body 10. The compression member 30 includes a main column 31, a gantry foot 33, a distal end sheave 35, a lower spreader 37, an upper spreader 39, a distal end side hanging ring 41, and a proximal end side hanging ring 43.
  The main pillar 31 is a box-shaped (hollow) structure, and two main pillars 31 are provided at intervals in the lateral direction Y. Below, the case where the longitudinal direction of the main pillar 31 is a horizontal direction or a substantially horizontal direction is demonstrated. The gantry foot 33 is provided at the base end side portion of the main column 31 and is attached to the compression member attaching portion 11 of the upper swing body 10 via the gantry foot pin P1. The tip sheave 35 is a sheave provided on the tip side portion of the compression member 30 and on which a hoisting rope (not shown) for hoisting the boom B is hung. The lower spreader 37 is provided at the tip side portion of the compression member 30 and includes a plurality of sheaves and is a portion on which the hoisting rope is hung. The upper spreader 39 includes a plurality of sheaves and is a portion on which the hoisting rope is hung. A hoisting rope is hung between the upper spreader 39 and the lower spreader 37. During the operation of the construction machine, the upper spreader 39 is disposed between the tip of the boom B and the lower spreader 37.
  The tip side suspension ring 41 is a suspension ring to which the gantry suspension rope R is attached. The gantry lifting rope R is a rope for lifting the gantry 20 with a companion machine (assembly crane) when the gantry 20 is assembled. The front end side hanging ring 41 is provided at the front end side portion of the compression member 30 with respect to the center of gravity of the compression member 30. The front end side hanging ring 41 is provided in the vicinity of the front end sheave 35, and is disposed, for example, at a position facing the front end sheave 35 in the lateral direction Y, and may be attached (fixed) to the main column 31, for example.
  The proximal end suspension ring 43 is a suspension ring to which the gantry suspension rope R is attached. The proximal end hanging ring 43 is provided at a proximal end portion of the compression member 30 with respect to the center of gravity of the compression member 30. The proximal end side suspension ring 43 is attached (fixed) to the main pillar 31. The proximal end hanging ring 43 may be provided in a portion other than the main pillar 31.
  The tension member 50 is attached to the distal end portion (portion near the distal end) of the compression member 30. The tension member 50 can be attached to the upper swing body 10. The “tip side” and “base end side” of the tension member 50 are defined as follows. As shown in FIG. 6, when the gantry 20 is assembled, the side close to the tip of the compression member 30 is the tip of the tension member 50, and the side close to the tension member mounting portion 13 is the base of the tension member 50. End side. The tension member 50 includes a plurality of link members, and includes a distal end side link 51 and a proximal end side link 53.
  The distal end side link 51 (first link) is attached to the distal end portion of the compression member 30 so as to be rotatable about the rotational axis in the lateral direction Y. The length (length in the longitudinal direction) of the distal end side link 51 is, for example, about half of the length of the compression member 30.
  The base end side link 53 (second link) is connected to the front end side link 51 so as to be rotatable about the rotation axis in the lateral direction Y. The proximal end link 53 is connected to the proximal end portion of the distal end link 51. The proximal end side link 53 includes a distal end side pin hole 53a, a long hole 53b (see FIG. 2), and a proximal end side pin hole 53c.
  The distal end side pin hole 53a is a pin hole for connecting the proximal end side link 53 and the distal end side link 51 in a posture (working posture) in which the construction machine can work. The distal end side pin hole 53 a is formed in the distal end side portion of the proximal end side link 53.
  As shown in FIG. 2, the long hole 53 b is a hole that allows the compression member 30 to be raised when the tension member 50 is attached to the upper swing body 10 and the tension member 50 is folded. The long hole 53 b is a “move” between the distal end side link 51 and the proximal end side link 53 when the compression member 30 is raised. The long hole 53b facilitates adjustment of the position of the base end side link 53 with respect to the tension member mounting portion 13 when mounting the base end side link 53 to the tension member mounting portion 13 (see FIG. 1). The long hole 53b is formed at the distal end side portion of the proximal end side link 53, and is formed closer to the proximal end side than the distal end side pin hole 53a. The long hole 53 b is a hole that is long in the longitudinal direction of the proximal end side link 53. When the gantry 20 is assembled and disassembled, the distal end side link 51 and the proximal end side link 53 are connected via a link connection pin P5 that is passed through the elongated hole 53b.
  As shown in FIG. 1, the base end side pin hole 53c is a pin hole for connecting the base end side link 53 and the tension member attaching portion 13 via the tension member fixing pin P3. 2 is formed in the base end side portion of the base end side link 53. The base end side pin hole 53c shown in FIG.
  The holding part 60 holds the front end side link 51 with respect to the compression member 30, for example, holds a substantially central part in the longitudinal direction of the front end side link 51. The holding unit 60 holds the distal end side link 51 from the lower side Z2. The holding part 60 is attached to the compression member 30, for example, attached to the main pillar 31. As shown in FIG. 3, the holding unit 60 includes a holding unit first member 61, a holding unit second member 62, and a holding unit third member 63.
  The holding portion first member 61 is fixed to the compression member 30, fixed to the main pillar 31, and fixed to both (left and right) side surfaces of the main pillar 31. The holding portion first member 61 protrudes from the main pillar 31 to the lower side Z2. The holding | maintenance part 2nd member 62 is arrange | positioned so that the front end side link 51 may be pinched | interposed from the horizontal direction Y outer side. As shown in FIG. 2, the holding part second member 62 is rotatable with respect to the holding part first member 61 around the rotation axis in the lateral direction Y, and for example, the holding part first member 61 via a pin. Connected to The holding part second member 62 has an operation position and a storage position. The holding part second member 62 arranged at the working position protrudes from the holding part first member 61 to the lower side Z2. As shown by a two-dot chain line in FIG. 2, the holding portion second member 62 arranged at the storage position is arranged (stored) on the compression member 30 side (upper side Z1) from the working position. The holding portion third member 63 can support the distal end side link 51 and can support the distal end side link 51 from the lower side Z2. The holding part third member 63 is attached to the holding part second member 62, for example, is detachably attached to the holding part second member 62, and is, for example, a pin. In addition, when the base end side link 53 and the front end side link 51 are supported by the adjustment support part 70, as shown in FIG. 3, the front end side link 51 may be in a state where it is not supported by the holding part third member 63. is there.
  As shown in FIG. 2, the adjustment support portion 70 supports the tension member 50 with respect to the compression member 30 and supports the proximal end side link 53 with respect to the compression member 30. For example, the adjustment support portion 70 supports the base end side portion of the base end side link 53, supports the tip end side portion from the base end side pin hole 53c, and supports the base end side portion from the long hole 53b. To do. The adjustment support part 70 is disposed on the front side X <b> 1 with respect to the holding part 60. The adjustment support part 70 is configured to be able to adjust the position (support position) of the proximal end side link 53 with respect to the compression member 30. The adjustment support part 70 includes a bracket 71, an adjustment part 73, and a protection part 75.
  The bracket 71 is fixed to the compression member 30 and is fixed to the main column 31, and is fixed to both side surfaces (left and right) of the main column 31 as shown in FIG. 4. The bracket 71 protrudes from the main pillar 31 to the lower side Z2. The bracket 71 has a hole.
  The adjustment unit 73 is attached to the bracket 71 and supports the proximal end side link 53. The adjustment unit 73 is configured to be able to adjust the support position of the base end side link 53 with respect to the compression member 30. For example, the adjustment unit 73 includes a block-shaped block unit 73a, a lever 73b, a dial 73d, a string-shaped unit 73e, and a hook 73f. Each of the lever 73b and the dial 73d is attached to the block portion 73a and is rotatable with respect to the block portion 73a. The string-like part 73e is a string-like part coming out from the block part 73a. The string-like portion 73 e supports the base end side link 53, supports the base end side link 53 from the lower side Z 2, and supports the base end side link 53 via the protection unit 75. The string-like portion 73e is, for example, a chain, and may be a rope, for example, a wire rope. The hook 73f is connected to the string-like portion 73e, is attached to and detached from the bracket 71, and is hooked in the hole of the bracket 71. By rotating the lever 73b and the dial 73d with respect to the block portion 73a, the length of the portion of the string-like portion 73e protruding from the block portion 73a is changed. Thereby, the string-like part 73e protruding from the block part 73a is lengthened (loosening of the adjusting part 73), and the string-like part 73e protruding from the block part 73a is shortened (tightening of the adjusting part 73). Is possible.
  The protection part 75 (protection bracket, cover) is disposed between the string-like part 73 e and the proximal end side link 53. The protection part 75 prevents the string-like part 73e from directly contacting the proximal end side link 53. Thereby, the protection part 75 suppresses the string-like part 73e from damaging the proximal end side link 53. A part of the protection part 75 is arranged on both outer sides (left and right) in the lateral direction Y with respect to the base end side link 53. The rigidity of the protection part 75 is set so that the protection part 75 does not compress the proximal end side link 53 in the lateral direction Y even when the adjustment part 73 is tightened. As shown in FIG. 2, the protection part 75 is arrange | positioned rather than the string-like part 73e at the front side X1 and the rear side X2, and guides the position in the front-back direction X of the string-like part 73e.
(Operation)
The gantry assembling method includes an attaching step and a position adjusting step. Hereinafter, assembly (attachment) of the gantry 20 shown in FIG. 1 to the upper swing body 10 will be described along a procedure.
  The outline of the attachment process is as follows. The attachment step is a step in which the base end portion of the compression member 30 shown in FIG. This attachment is performed in a state in which the tip side portion from the center of gravity of the compression member 30 and the base end side portion from the center of gravity of the compression member 30 are suspended. This attachment is performed with the tension member 50 held by the compression member 30. Details of the attachment process are as follows.
  The companion machine lifts the gantry 20. For example, the gantry 20 is lifted from a vehicle (such as a truck) that carries the gantry 20. A hoisting rope (not shown) is placed on the gantry 20 with the upper spreader 39 and the lower spreader 37 being left.
  The gantry 20 is lifted so that the longitudinal direction of the gantry 20 is substantially horizontal (the gantry 20 is lifted substantially horizontally). At this time, for example, the inclination of the gantry 20 in the longitudinal direction with respect to the horizontal direction (hereinafter, also simply referred to as “an inclination of the gantry 20”) is 45 ° or less, for example, 30 ° or less, for example, 20 ° or less, For example, it is 10 ° or less. The inclination of the gantry 20 at this time is set so that the hoisting rope does not fall from the gantry 20. The inclination of the gantry 20 at this time is set so that the gantry foot pin P <b> 1 can be easily inserted into the compression member mounting portion 11 and the gantry foot 33. At this time, the gantry 20 is tilted so that the base end portion (for example, the central axis of the gantry foot 33) is disposed on the lower side Z2 with respect to the distal end portion (for example, the central axis of the distal end sheave 35) of the gantry 20.
  At this time, the distal end side hanging ring 41 at the distal end side portion from the center of gravity of the compression member 30 and the proximal end side hanging ring 43 at the proximal end side portion from the center of gravity of the compression member 30 are suspended. At this time, the length of the gantry lifting rope R from the lifting hook F to the proximal end hanging ring 43 is the same as the length of the gantry lifting rope R from the lifting hook F to the distal end hanging ring 41 (or Set to approximately the same).
  When the gantry 20 is lifted, the tension member 50 is in a folded state, is held with respect to the compression member 30, and is stored in the compression member 30. At this time, as shown in FIG. 2, the base end side link 53 is held by the adjustment support portion 70 with respect to the compression member 30 and is held at a position corresponding to the front end side link 51 (adjustment portion 73. Is tightened). At this time, the base end side link 53 may be held in a close position without hitting the front end side link 51. At this time, the holding portion 60 is a working position and can hold the distal end side link 51 with respect to the compression member 30.
  As shown in FIG. 5, in a state where the gantry 20 is lifted, the pin holes of the compression member mounting portion 11 and the pin holes of the gantry foot 33 are aligned. Next, the gantry foot pin P <b> 1 is inserted into the compression member mounting portion 11 and the gantry foot 33. Next, as shown in FIG. 1, the gantry 20 is lowered (turned down) around the gantry foot pin P1 toward the side where the tip of the gantry 20 moves to the lower side Z2.
  The position adjustment process is performed after the attachment process. The position adjusting step is a step of changing the support position of the tension member 50 with respect to the compression member 30. The position adjusting step is a step of changing the support position of the base end side link 53 with respect to the compression member 30. The position adjustment process is performed in a state where the front end side link 51 is held by the compression member 30. At this time, the front end side link 51 is held with respect to the compression member 30 by the holding portion 60.
  In the position adjustment process, the support position of the base end side link 53 with respect to the compression member 30 is changed by the adjustment support portion 70. At this time, the base end side link 53 is lowered by loosening the adjustment part 73 (releasing the restriction), and the base end side link 53 is raised by tightening the adjustment part 73. At this time, the position of the base end side link 53 with respect to the front end side link 51 and in the longitudinal direction of the base end side link 53 can be changed by the long hole 53b.
  By the position adjusting process, the position of the base end side pin hole 53c and the position of the pin hole of the tension member attaching portion 13 shown in FIG. Next, the tension member fixing pin P <b> 3 is inserted into the base end side link 53 and the tension member attaching portion 13. When the position adjustment process is performed, the compression member 30 is not raised or lowered with respect to the upper swing body 10.
  Next, the adjustment support part 70 shown in FIG. 2 is removed from the gantry 20. Thereby, the support of the base end side link 53 with respect to the compression member 30 is cancelled | released. Further, the holding unit 60 is changed from the work position to the storage position. Thereby, holding | maintenance of the front end side link 51 with respect to the compression member 30 is cancelled | released. Next, a gantry cylinder (not shown) provided on the upper swing body 10 is attached to the compression member 30. As shown in FIG. 6, the compression member 30 is raised around the gantry foot pin P1 by the gantry cylinder. At this time, the tension member 50 is unfolded from the folded state and becomes substantially linear.
  The work of disassembling the gantry 20 from the upper swing body 10 is performed in the reverse order to the work of assembling the gantry 20 on the upper swing body 10 (it may not be performed in the reverse order).
(Comparative example)
When the adjustment support part 70 is not provided, it is conceivable that the assembly of the gantry 20 to the upper swing body 10 is performed as follows. [A] In this case, the companion machine lifts the gantry 20 so that the longitudinal direction of the gantry 20 is the vertical direction Z (in a state where the gantry 20 is erected). [B] Next, the gantry foot pin P1 is attached. [C] Next, when the comprehension machine lowers the compression member 30, the tension member 50 hangs down from the compression member 30. [D] Next, the tension member fixing pin P <b> 3 is attached to the tension member 50 and the tension member attaching portion 13. [E] Next, the companion machine further lowers the compression member 30. [F] Next, the undulating rope is leaved by the lower spreader 37 and the upper spreader 39 shown in FIG. [G] Next, the gantry cylinder is attached to the gantry 20, and the gantry 20 is raised by the gantry cylinder (see FIG. 6).
  In the comparative example, as described in [a] above, the gantry 20 is lifted in a standing state, so that the lift required to lift the gantry 20 is higher than when the gantry 20 is lifted substantially horizontally (high lift). Is required). Therefore, there are the following problems (1) to (5) as problems when compared with the case where the gantry 20 is lifted substantially horizontally. (1) The lift required for the phase machine increases. (2) The gantry 20 cannot be lifted in a place where the height is restricted, and the gantry 20 cannot be assembled. (3) There is a fear that an operator who attaches the gantry foot pin P1 may be anxious. (4) When the gantry lifting rope R is detached, the damage to the construction machine (such as the upper swing body 10) is large. (5) When the assembly work is performed outdoors, the gantry 20 is blown by the wind, and the assembly work becomes difficult.
  In the comparative example, since the adjustment support part 70 is not provided, the tension member 50 is not restrained with respect to the compression member 30. Therefore, as described in [a] above, when the gantry 20 is erected, the tension member 50 swings (sways) with respect to the compression member 30, and the compression member 30 and the tension member 50 come into contact with each other and are scratched. There is a fear. In the comparative example, when the gantry 20 is erected as in the above [a], the hoisting rope cannot be placed on the gantry 20 (see [f] above). In the comparative example, as shown in the above [c] and [d], the compression member 30 is lowered around the gantry foot pin P1 shown in FIG. 6 so that the pin holes of the tension member fixing pin P3 are aligned. Therefore, the operation of the companion machine is complicated and time-consuming.
(Effect of the first invention)
The effects of the gantry assembly device 1 shown in FIG. 1 are as follows.
[Configuration 1-1] The gantry assembling apparatus 1 includes an upper swing body 10 of a construction machine, a compression member 30, a tension member 50, an adjustment support portion 70, a distal end side link 51, a proximal end side link 53, Is provided. The compression member 30 is attached to the upper swing body 10 so as to be raised and lowered. The tension member 50 is attached to the distal end portion of the compression member 30 and can be attached to the upper swing body 10. The adjustment support part 70 supports the tension member 50 with respect to the compression member 30. The tension member 50 includes a distal end side link 51 and a proximal end side link 53. The distal end side link 51 is rotatably attached to the distal end portion of the compression member 30. The proximal end link 53 is rotatably connected to the distal end side link 51.
  [Configuration 1-2] The adjustment support portion 70 is configured to be capable of adjusting the support position of the proximal end side link 53 with respect to the compression member 30.
  With the above [Configuration 1-2], the support position of the tension member 50 with respect to the compression member 30 can be adjusted so that the tension member 50 does not hang down. Therefore, as shown in FIG. 5, the gantry 20 can be attached to the upper swing body 10 with the gantry 20 suspended substantially horizontally. As a result, the lift required to lift the gantry 20 can be made lower than when the gantry 20 is lifted upright. As a result, the above problems (1) to (5) can be suppressed. Further, the gantry 20 can be easily assembled even when a member (for example, a hoisting rope) is placed on the gantry 20.
  With the above [Configuration 1-2], the tension member 50 can be supported with respect to the compression member 30, so that the problem that the compression member 30 and the tension member 50 come into contact with each other and are damaged can be suppressed. As a result, damage to the gantry 20 can be suppressed.
  With the above [Configuration 1-2], the position of the base end side link 53 with respect to the upper swing body 10 (for example, the position of the pin hole) can be easily adjusted. Therefore, the base end side link 53 can be easily attached to the upper swing body 10. As a result, the following effects may be obtained. For example, when adjusting the position of the base end side link 53 with respect to the upper turning body 10 by moving the gantry 20 with a phase machine (see, for example, [c] above), the operation of the phase machine is complicated and troublesome. Take it. On the other hand, in the present embodiment, the position of the base end side link 53 with respect to the upper swing body 10 can be adjusted by the adjustment support portion 70 without operating the companion machine. Note that the companion machine may be operated to adjust the position of the proximal end side link 53 with respect to the upper swing body 10.
(Effect of the second invention)
[Configuration 2] The gantry assembly device 1 includes a holding portion 60 that holds the distal end side link 51 with respect to the compression member 30.
  With the above [Configuration 2], the support position of the base end side link 53 with respect to the compression member 30 can be adjusted in a state where the front end side link 51 is held by the compression member 30. Therefore, when adjusting the support position, the position of the base end side link 53 relative to the upper swing body 10 can be easily adjusted (for example, fine adjustment) as compared with the case where the base end side link 53 and the front end side link 51 move. it can.
(Effect of the third invention)
[Configuration 3] The gantry assembling apparatus 1 includes a proximal end side hanging ring 43 and a distal end side hanging ring 41. The front end side hanging ring 41 is provided at a front end side portion from the center of gravity of the compression member 30. The proximal end hanging ring 43 is provided in a proximal end portion with respect to the center of gravity of the compression member 30.
  The gantry assembly device 1 includes the above [Configuration 3]. Therefore, when the gantry lifting rope R is attached to the distal end side suspension ring 41 and the proximal end side suspension ring 43, it is easy to lift the gantry 20 so that the longitudinal direction (of the compression member 30) of the gantry 20 is substantially horizontal.
(Effect of the fourth invention)
The gantry assembling method is a method using the gantry assembling apparatus 1 having the above [Configuration 1-1]. The gantry assembling method includes an attaching step and a position adjusting step.
[Configuration 4-1] The attachment step is a step of attaching the base end portion of the compression member 30 to the upper swing body 10 in a state where the tension member 50 is supported by the compression member 30.
[Configuration 4-2] The position adjustment step is a step of changing the support position of the tension member 50 with respect to the compression member 30 after the attachment step.
  With the above [Configuration 4-1], as shown in FIG. 5, the tension member 50 does not hang down, so that the gantry 20 can be attached to the upper swing body 10 while the gantry 20 is lifted substantially horizontally. As a result, the lift required to lift the gantry 20 can be made lower than when the gantry 20 is lifted upright. As a result, the above problems (1) to (5) can be suppressed. Further, the gantry 20 can be easily assembled even when a member (for example, a hoisting rope) is placed on the gantry 20.
  With the above [Configuration 4-1], the problem that the compression member 30 and the tension member 50 come into contact with each other and are damaged can be suppressed. As a result, damage to the gantry 20 can be suppressed.
  With the above [Configuration 4-2], the position of the base end side link 53 with respect to the upper swing body 10 (for example, the position of the pin hole) can be easily adjusted. Therefore, the base end side link 53 can be easily attached to the upper swing body 10.
(Effect of the fifth invention)
[Configuration 5] The position adjustment step is performed in a state where the front end side link 51 is held by the compression member 30.
  With the above [Configuration 5], the position of the base end side link 53 with respect to the upper swing body 10 can be easily adjusted (for example, fine adjustment) compared to the case where the base end side link 53 and the front end side link 51 move during the position adjustment process. Etc.)
(Effect of the sixth invention)
[Configuration 6] The attaching step is performed in a state in which the tip side portion from the center of gravity of the compression member 30 and the base end side portion from the center of gravity of the compression member 30 are suspended.
  With the above [Configuration 6], the gantry 20 can be easily lifted so that the longitudinal direction (of the compression member 30) of the gantry 20 is substantially horizontal.
(Modification)
Some of the components of the above embodiment may not be provided, and the number of components may be changed. Fixing, mounting, connection, etc. may be direct or indirect.
  For example, at least one of the distal end side hanging ring 41 and the proximal end side hanging ring 43 may not be provided. The gantry hoisting rope R may be hung on the main pillar 31 or across (not shown) connecting the two main pillars 31 in the lateral direction Y. The length of the gantry lifting rope R from the lifting hook F to the gantry 20 may be adjusted so that the gantry 20 is lifted substantially horizontally.
  For example, the number of link members constituting the tension member 50 is two in the above embodiment, but may be three or more. The base end side link 53 and the front end side link 51 may be connected via another link member.
  For example, the holding unit 60 may not be provided. The position adjusting process may not be performed in a state where the front end side link 51 is held by the compression member 30. In this case, the positions of the proximal end side link 53 and the distal end side link 51 are adjusted by the adjustment support part 70.
1 Gantry assembly device 10 Upper swing body (main body)
30 compression member 41 distal end side hanging ring 43 proximal end side hanging ring 50 tension member 51 distal end side link 53 proximal end side link 60 holding portion 70 adjustment support portion

Claims (6)

  1. The main body of the construction machine,
    A compression member attached to the main body in a undulating manner;
    A tension member attached to the front end of the compression member and attachable to the main body;
    An adjustment support for supporting the tension member with respect to the compression member;
    With
    The tension member is
    A distal end side link rotatably attached to the distal end portion of the compression member;
    A proximal end link rotatably connected to the distal end link;
    With
    The adjustment support portion is configured to be capable of adjusting a support position of the base end side link with respect to the compression member.
    Gantry assembly device.
  2. The gantry assembly device according to claim 1,
    A holding portion for holding the distal end side link with respect to the compression member;
    Gantry assembly device.
  3. The gantry assembly device according to claim 1 or 2,
    A tip-side suspension ring provided at a tip-side portion from the center of gravity of the compression member;
    A proximal-side hanging ring provided in a proximal-side portion from the center of gravity of the compression member;
    Comprising
    Gantry assembly device.
  4. The main body of the construction machine,
    A compression member attached to the main body in a undulating manner;
    A tension member attached to the front end of the compression member and attachable to the main body;
    An adjustment support for supporting the tension member with respect to the compression member;
    With
    The tension member is
    A distal end side link rotatably attached to the distal end portion of the compression member;
    A proximal end link rotatably connected to the distal end link;
    A gantry assembly method using a gantry assembly apparatus comprising:
    An attachment step of attaching a base end portion of the compression member to the main body in a state where the tension member is supported by the compression member;
    After the attaching step, a position adjusting step for changing the supporting position of the tension member with respect to the compression member;
    Comprising
    Gantry assembly method.
  5. A gantry assembling method according to claim 4,
    The position adjusting step is performed in a state where the distal end side link is held by the compression member.
    Gantry assembly method.
  6. A gantry assembling method according to claim 4 or 5,
    The attachment step is performed in a state in which a distal end side portion and a proximal end side portion from the center of gravity are hung from the center of gravity of the compression member.
    Gantry assembly method.
JP2016197880A 2016-10-06 2016-10-06 Gantry assembly apparatus and gantry assembly method Active JP6428740B2 (en)

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Application Number Priority Date Filing Date Title
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Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3977530A (en) * 1974-06-13 1976-08-31 The Manitowoc Company, Inc. Crane with gantry backhitch and boom hoist assembly removable as a unit
JPH0743110Y2 (en) * 1988-12-14 1995-10-04 石川島建機株式会社 Tower crane
JPH09278368A (en) * 1996-04-10 1997-10-28 Hitachi Constr Mach Co Ltd A-frame supporting device and a-frame fitting/removing method
JP3925761B2 (en) * 1999-01-08 2007-06-06 日立建機株式会社 A-type frame of construction machinery
JP2002154788A (en) * 2000-11-17 2002-05-28 Nippon Sharyo Seizo Kaisha Ltd Gantry
JP2006199484A (en) * 2005-01-24 2006-08-03 Kobelco Cranes Co Ltd Strut of crane
JP4770978B2 (en) * 2009-07-16 2011-09-14 コベルコクレーン株式会社 Construction machine gantry structure
CN103663189B (en) * 2014-01-02 2015-06-17 中联重科股份有限公司 Moving arm tower crane installation method
JP6234256B2 (en) * 2014-02-04 2017-11-22 日本車輌製造株式会社 Construction machinery
JP6284407B2 (en) * 2014-04-02 2018-02-28 日本車輌製造株式会社 Construction machinery

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