JP3474542B2 - Climbing mount - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a climbing stand for a tower crane.

[0002]

2. Description of the Related Art Climbing tower cranes are used for construction work such as high-rise buildings. This climbing tower crane has two main beams (beams of the building body)
Between them, a temporary beam called a climbing mount is laid, and the legs of the lower end of the mast of the tower crane are placed and fixed on it.

Then, the tower crane repeats climbing as the steel frame of the upper floor of the building is completed, and climbs to the upper floor. This climbing method will be described with reference to FIG.

FIG. 17A shows a state when the tower crane is in use. Two main beams 56, 56 on the lower floor
A climbing mount 200 is suspended between the two. The climbing frame 200 has a pair of receiving beams 210 arranged substantially parallel to each other, and projects from both ends of each receiving beam 210.
It has an outrigger 220 which can be displaced along the longitudinal direction of the receiving beam 210. The length of the receiving beam 210 is the main beam 5
It is set shorter than the interval (span) of 6,56. The outriggers 220 are in a state of protruding from both ends of each receiving beam 210, and are fixed to the main beam 56 by a fixing member.

The tower crane has a construction in which a crane main body 8 having an elevating device is supported on an upper portion of the tower mast 3. A folding base 4 is installed at the lower end of the tower mast 3, and the folding base 4 and the pair of receiving beams 21 are installed.
0 and 0 are fixed by the fixing means. Thus, when the tower crane is in use, the tower crane is supported by the climbing mount 200 at the lower end of the tower mast 3.

When climbing, first, FIG.
As shown in (b), the bell pedestal 300 is installed between the main beams 56, 56 on the upper floor, and the guide frame of the crane body 8 is fixed to the bell pedestal 300. As a result, the tower crane is supported by the upper-layer bell cradle 300.

Next, the fixing member for fixing the main beam 56 on the lower floor and the outrigger 220 is removed and the fixation is released, and the outrigger 220 is pulled into the receiving beam 210. Then, in this state, the lifting device of the crane body 8 is driven to climb (raise) the tower mast 3 and the climbing mount 200 as shown in FIG. 17 (c).

Next, after climbing to a predetermined height, the retracted outrigger 220 is projected again and fixed to the main beam 56 by a fixing member.

Next, the fixing of the guide frame of the crane body 8 and the bell cradle 300 is released to release the bell cradle 300.
Is removed, the lifting device of the crane body 8 is driven, and the crane body 8 itself is climbed. As a result,
As shown in 7 (d), the climbing of the entire tower crane is completed.

Such a climbing mount 200 is repeatedly used in combination with various tower cranes at construction sites of various buildings.

[0011]

However, the conventional climbing frame 200 as described above has the following problems.

Outrigger 2 of climbing mount 200
20 is driven by a hydraulic cylinder so as to be displaced along the longitudinal direction of the receiving beam 210. When using the tower crane (when the climbing mount 200 is fixed),
The climbing pedestal 200 receives not only a downward load from the tower crane but also a horizontal force. When such a horizontal force is applied, the receiving beam 210
However, an excessive force acts on the hydraulic cylinder to move the fixed outrigger 220 in the longitudinal direction. For this reason, there is a problem that the excessive pressure may cause the hydraulic cylinder to buckle or the like and damage the hydraulic cylinder.

The present invention solves the above-mentioned drawbacks of the prior art, and an object thereof is to allow an excessive force acting on a hydraulic cylinder for displacing a projecting member to escape and to prevent damage to the hydraulic cylinder. It is to provide a mount.

[0014]

The above objects are achieved by the present invention described in (1) to (9) below.

(1) A pair of receiving beams, which are arranged substantially parallel to each other and on which the legs of the tower crane can be mounted and fixed, and projecting from both ends of each of the receiving beams, which are displaceable in the longitudinal direction of the receiving beams. A member, a hydraulic cylinder for displacing the projecting member, and a fixing means for fixing the projecting member in the projecting state, and normally fixing the projecting member in the projecting state and the beam of the building, At the time of climbing of a tower crane, a climbing platform that releases the fixation of the projecting member and the beam of the building, retracts the projecting member, and performs climbing, wherein the projecting member and the building are fixed. When an external force is applied to the hydraulic cylinder while the hydraulic cylinder is in the open state, the fixing mechanism is provided with a safety mechanism that releases the force and prevents an excessive force from being applied to the hydraulic cylinder. The external force acting on the hydraulic cylinder is a pin inserted into a hole formed in each of the material and the beam, and the external force acting on the hydraulic cylinder is a force caused by displacement of the play of the projecting member with respect to the beam when the pin is inserted. A climbing stand that is characterized by that.

(2) The hydraulic cylinder is a double-acting hydraulic cylinder capable of exerting a positive pressure in the extension direction and the contraction direction of the piston, and the safety mechanism is a flow that exerts a positive pressure in the extension direction. The climbing mount according to (1) above, which is a switching valve capable of connecting a passage and a passage that applies a positive pressure in the contraction direction.

(3) The receiving beam includes a tubular portion having a substantially quadrangular cross section, and a partition wall portion extending in the longitudinal direction of the receiving beam to partition the inside of the tubular portion into a plurality of spaces. The partition wall divides the inside of the tubular portion into at least three spaces along the ascending / descending direction of the climbing frame, and the projecting member is the central space of the three spaces. The climbing mount according to (1) or (2) above, which is inserted into the.

(4) Any of the above-mentioned (1) to (3), wherein two of the projecting members projecting in at least the same direction are replaceably installed to those having different lengths. Climbing stand described in the crab.

(5) The climbing frame according to any one of the above (1) to (4), wherein the projecting lengths of at least two projecting members of the projecting members that project in the same direction can be adjusted. .

(6) The climbing frame according to (5), wherein the protruding length of each of the protruding members can be independently adjusted.

(7) The climbing frame according to (5) or (6), wherein the protrusion length of the protrusion member can be adjusted stepwise.

(8) The climbing mount according to any one of the above (5) to (7), wherein the protrusion length of the protrusion member is adjusted by a limiting means for limiting the protrusion length of the protrusion member.

(9) The limiting means is provided on the projecting member, and is attachable to and detachable from the plurality of first projecting portions at positions corresponding to different projecting lengths of the projecting member and the receiving beam. The climbing mount according to (8) above, which has a second protrusion that is provided and that selectively engages with each of the first protrusions.

[0024]

[0025]

[0026]

[0027]

[0028]

[0029]

[0030]

[0031]

[0032]

[0033]

[0034]

[0035]

BEST MODE FOR CARRYING OUT THE INVENTION A climbing mount of the present invention will be described below in detail with reference to the preferred embodiments shown in the accompanying drawings.

FIG. 1 is a side view showing an embodiment of the climbing mount of the present invention, FIG. 2 is a plan view of the climbing mount 9A shown in FIG. 1, and FIG. 15 is a front view of the climbing mount 9A.

As shown in these figures, the climbing frame 9A includes a pair of receiving beams 1, a pair of vertical brace (connecting member) 2 for connecting (connecting) the receiving beams 1 to each other, and each receiving beam 1
Outriggers (protruding members) protruding from both ends of
30 and 30. The configuration of each unit will be described below.

The pair of receiving beams 1 each have an elongated, substantially rectangular parallelepiped shape, and are arranged substantially parallel to each other when seen in a plan view (FIG. 2). Since each receiving beam 1 has the same configuration, one receiving beam 1 will be representatively described. Inside the receiving beam 1,
A space (outrigger housing portion 19) for inserting (housing) the outrigger 30 is formed along the longitudinal direction. The cross-sectional shape of the outrigger storage portion 19 is substantially rectangular. The length of the receiving beam 1 is the climbing frame 9
It is set to be shorter than the interval between the two main installation beams 56, 56 at the location where A is installed (hereinafter referred to as the “span of the main installation beam”). The receiving beam 1 is configured so that both sides from the center thereof are substantially symmetrical.

The pair of vertical breaths 2 have the same structure, and are each formed by combining a plurality of beams, and have a frame shape. Each vertical brace 2 is installed in a posture substantially orthogonal to each receiving beam 1 and perpendicular to the horizontal plane, and connects both receiving beams 1. Further, each vertical brace 2 is installed at a position inside from both ends of the receiving beam 1 by a length of about ¼ of the entire length of the receiving beam 1. By providing such a vertical brace 2, the climbing mount 9A has an increased strength against a horizontal force received from the tower crane, and can more firmly support (fix) the tower crane.

The outriggers 30 have an elongated rectangular parallelepiped shape and are installed so as to be inserted into the outrigger storage portions 19 in the receiving beams 1 from both ends of each receiving beam 1. That is, four outriggers 30 are installed on the climbing pedestal 9A, and their configurations are the same. Then, each outrigger 30 corresponds to the outrigger storage portion 1 of each beam 1.
It is possible to displace (slide) along 9 and to change the length protruding from the end of each receiving beam 1 (projection length).

FIGS. 1 and 2 show the tower crane in use (when climbing is not performed),
Each outrigger 30 is in a state of protruding from both ends of each receiving beam 1. The protruding portions of the outriggers 30 are respectively located on the main beam 56, and these portions and the main beam 56 are fixed by a fixing member described later.

In this way, the folding mount (leg) 4 provided at the root (lower end) of the tower mast 3 of the tower crane is fixed on the climbing mount 9A fixed on the main beam 56. There is. The folding frame 4 of the tower crane has a folding frame body 5 and four legs 6 provided on the outer periphery of the folding frame body 5 at equal angular intervals. Each leg 6 has the same configuration, and when stored (closed), each leg 6 is folded by rotating it about the vertical rotation axis as shown by the arrow in the direction A in FIG. Foldable along the gantry body 5. Further, at the time of use (opening), each leg 6 is rotated about the rotation axis as shown by the arrow in the direction B in FIG. 1 to expand each folded leg 6.

The folding pedestal 4 is fixed to the climbing pedestal 9A with each leg 6 in the state of use. In this state, each leg 6 is seen in a plan view (FIG. 2),
From the center (center axis) of the tower mast 3 at an equal angle (90
°) projecting in the radial direction at intervals of two, and two of them are located on each receiving beam 1. The tower crane is placed with the center of the tower mast 3 aligned with the center of the climbing stand 9A. That is, the central axis of the tower mast 3 is located at the center of the receiving beam 1 in the longitudinal direction and at the center between the pair of receiving beams 1. Further, each leg 6 and each receiving beam 1 form an angle of approximately 45 ° when seen in a plan view. And each leg 6 and each receiving beam 1 are being fixed by the fixing means mentioned later.

Such a climbing mount 9A is shown in FIG.
The configuration is similar or symmetrical with respect to the portions (the portions where the respective outriggers 30 project / retract) divided into four portions in the vertical and horizontal directions (in plan view). Further, the fixing method of each outrigger 30 and the main beam 56 and the fixing method of each leg 6 of the tower crane and each receiving beam 1 are also the same or symmetrical at these four points. Therefore, in the following description, the configuration of one of these four points will be representatively described.

The projecting portion of the outrigger 30 includes a pair of upper shavings (upper fixing sill for fixing the pedestal) 52, a pair of lower lower shavings (lower fixing for the sill mounting) 53, and four pieces of the closing bolts (bolts for fixing the mounting). It is fixed to the main beam 56 by a fixing member including 54.

Each of the upper hooks 52 is an elongated member having holes at both ends for inserting the hook bolts 54, and is installed on the outriggers 30 at right angles to the outriggers 30. Each lower ground 53
Are substantially the same members as the upper kanzashi 52, and are installed below the main beam 56 and orthogonal to the main beam 56. In other words, each upper kakuza 52 and each lower kanzashi 53
And are oriented in directions orthogonal to each other. Then, the upper and lower tips 52 and 53 are installed with their central axes of the bolt insertion holes aligned.

The four kanzashi bolts 54 are respectively
It is a long bolt having a threaded portion formed at both ends, and is installed so as to pass through the bolt insertion hole of the upper kanzashi 52 and the bolt insertion hole of the lower kanzashi 53 and sandwich the outrigger 30 and the main beam 56. . And each Kanzashi bolt 5
Assemble the nuts 145 to the screw parts on both ends of 4, respectively,
Tighten these nuts 145 to secure the outrigger 30
And the main beam 56 are firmly fixed. When climbing, these fixing members are removed, and the fixing between the outrigger 30 and the main beam 56 is released.

The legs 6 of the folding mount 4 include an upper kakushi (an upper kakushi for fixing a crane) 10, a lower kakushi (a lower kakushi for fixing a crane) 13, and two kakushi bolts (bolts for fixing a crane) 25. It is fixed to the receiving beam 1 by a fixing means.

The leg 6 of the folding frame 4 is formed with a hole portion penetrating in the thickness direction, and the upper Kanzashi 10 is inserted into this hole portion. The upper hook 10 is an elongated member in which bolt insertion holes 11 through which the hook bolts 25 pass vertically are formed at both ends. The upper kanzashi 10 is provided so as to be orthogonal to the legs 6, and the upper beam 1
With respect to, it is positioned at a predetermined angle (about 45 °).

The lower ferrule 13 is substantially the same as the upper ferrule 10, and has bolt insertion holes 14 through which the bolts 25 pass vertically, formed at both ends. The lower arrow 13 is installed below the receiving beam 1, and the central axis of each bolt insertion hole 14 is set to each bolt insertion hole 11 respectively.
It is parallel to the upper kanzashi 10 along with the central axis of.

The two kanzashi bolts 25 are respectively
It is a long bolt having threaded portions at both ends, and is installed so as to pass through the bolt insertion hole 11 of the upper knot and the bolt insertion hole 14 of the lower knot 13 and sandwich the receiving beam 1. Then, the nuts 116 are attached to the threaded portions on both ends of each of the kanji bolts 25, respectively.
The legs 6 (folding frame 4) and the receiving beam 1 are firmly fixed by tightening 6 together. Note that, once the legs 6 and the receiving beams 1 are once fixed, the legs 6 and the receiving beams 1 are normally kept in a fixed state until the use of the tower crane is finished and the tower crane is disassembled / removed.

FIG. 5 is a cross-sectional side view showing a state in which the outriggers 30 are all housed in the receiving beam 1 (a state at the time of climbing) with one side surface portion of the receiving beam 1 removed.
Is a cross-sectional front view of the outrigger 30 taken along the line AB in FIG. 5, and FIG. 7 shows a state in which the outrigger 30 projects to the maximum projecting length by removing one side surface portion of the receiving beam 1. 11 is a cross-sectional side view of the outrigger 30 shown in FIG.
It is a cross-sectional top view cut by the CD line in the inside. Hereinafter, the configuration and the like of the outrigger 30 will be described with reference to these figures and the above-mentioned figures. In the following description, for the outrigger 30, the protruding direction (rightward in FIG. 5) is the “tip”, and the opposite direction (leftward in FIG. 5).
Is called "proximal".

As shown in FIG. 5, the outrigger 30 is
It is installed in the outrigger storage portion 19 formed in the receiving beam 1 and is movable along the longitudinal direction of the receiving beam 1. The outrigger 30 has a box-shaped structure, and is driven by a hydraulic cylinder (displacement means) 32 provided in the outrigger housing portion 19 inside the receiving beam 1 to be transported along the longitudinal direction of the receiving beam 1 (displacement). To do).

The hydraulic unit 29 for supplying hydraulic pressure to the hydraulic cylinder 32 is installed near the corner formed by the one receiving beam 1 and the one vertical breath 2 (see FIG. 2). Hydraulic pressure is supplied from the hydraulic unit 29 to each of the four hydraulic cylinders 32 that move each outrigger 30. In the hydraulic cylinder 32, when the hydraulic pressure is supplied from the hydraulic unit 29, the piston rod 32a expands and contracts to displace the outrigger 30.

A vertical reinforcing plate 33 is provided substantially at the center of the outrigger 30 so as to reinforce the outrigger 30 so as to be orthogonal to the longitudinal direction of the outrigger 30. That is, the internal space of the outrigger 30 is divided into two equal parts in the longitudinal direction by the vertical reinforcing plate 33.

Further, as shown in FIG. 6, the outrigger 3
Between the vertical reinforcing plate 33 in 0 and the tip plate 35 at the tip of the outrigger 30, a parallel reinforcing plate 34 is provided along the longitudinal direction of the outrigger 30 and perpendicular to the horizontal plane. Due to the parallel reinforcing plate 34, the internal space between the vertical reinforcing plate 33 and the tip plate 35 at the tip of the outrigger 30 is
It is divided into two approximately in the horizontal direction.

Also, as shown in FIG. 11, the outrigger 3
The elongated space partitioned by 0 parallel reinforcing plates 34 is provided with, for example, six vertical sub-reinforcing plates 55 installed in parallel with the vertical reinforcing plates 33. This vertical auxiliary reinforcing plate 55
Together with the vertical reinforcing plate 33 and the parallel reinforcing plate 34, reinforces a portion (tip portion) where a large load is applied to the outrigger 30. With such a configuration, the outrigger 30 has sufficient strength against the weight of the tower crane and the suspended load.

The hydraulic cylinder 32 is installed along the longitudinal direction of the receiving beam 1 and the outrigger 30. That is, the direction in which the piston rod 32 a of the hydraulic cylinder 32 expands and contracts is parallel to the direction in which the outrigger 30 displaces with respect to the receiving beam 1. Further, the hydraulic cylinder 32 is in the most contracted state in the state shown in FIG.

A connection pin insertion hole is formed at the base end portion of the hydraulic cylinder 32, and is connected to the bracket 28 installed in the center portion of the receiving beam 1 via the connection pin 49.

A cylinder through hole 37 is provided in the base plate 36 at the base end of the outrigger 30, and the hydraulic cylinder 32 is provided.
Has been inserted. That is, the tip end side (piston rod 32a side) of the hydraulic cylinder 32 has entered the inside of the outrigger 30, and in the state shown in FIG. 5, most of the hydraulic cylinder 32a is located inside the outrigger 30.

The vertical reinforcing plate 33 has a cylinder insertion hole 38.
Is provided, and the tip end portion 39 of the piston rod 32a of the hydraulic cylinder 32 that has entered the outrigger 30 is inserted. A connection pin insertion hole 40 is provided at the tip 39 of the piston rod 32a. Cylinder insertion hole 3
A connection pin insertion hole is also formed in the parallel reinforcing plate 34 in the vicinity of 8, and the connection pin 41 is inserted by aligning this with the connection pin insertion hole 40. As a result, the tip 39 of the piston rod 32a is connected to the outrigger 30.

As shown in FIG. 5, the outrigger 30 is provided with a hole portion 42 into which a human arm can be inserted, for example, at a connecting portion between the tip end portion 39 of the piston rod 32a and the parallel reinforcing plate 34. The operator puts his arm in this hole 42,
The connection pin 41 can be inserted / pulled out.

With such a configuration, the hydraulic unit 29
The outrigger 30 can be displaced by driving. That is, when the hydraulic unit 29 is driven to be sent out, the outrigger 30 is sent out by the hydraulic cylinder 32 in accordance with the drive time of the hydraulic unit 29. Then, when the hydraulic cylinder 32 is fully extended, the hydraulic unit 29 automatically stops. At this time, as shown in FIG. 7, about half of the entire length of the outrigger 30 is in a state of protruding from the end of the receiving beam 1.

When the hydraulic unit 29 is driven back, the outrigger 30 is pulled into the receiving beam 1 according to the driving time of the hydraulic unit 29. Then, when the hydraulic cylinder 32 is completely contracted, the hydraulic unit 29 automatically stops, and the entire outrigger 30 is stored (retracted) in the receiving beam 1 as shown in FIG.

Further, as described above, the outrigger 30 inserts the connection pin 41 into the connection pin insertion hole 40 provided in the tip end portion 39 of the piston rod 32a, thereby connecting the hydraulic cylinder 32 to the receiving beam 1. Since it is connected via the connecting pin 41, the receiving beam 1
It can be easily removed by pulling from. Also,
The outrigger 30 can also be easily removed from the receiving beam 1 by pulling out the connecting pin 49 connecting the base end of the hydraulic cylinder 32 to the receiving beam 1 instead of the connecting pin 41. In this case, the hydraulic cylinder 32 as well as the outrigger 30 is removed from the receiving beam 1.

With such a structure, by removing the outriggers 30 from the receiving beam 1, the receiving beam 1 and the outriggers 3 are removed.
Weight can be reduced by separating 0 and 0. This facilitates handling at the time of transportation to the site of use, installation at the site of use, and removal after use.

FIG. 8 is a front view of the receiving beam 1 with the outrigger 30 removed, and FIG. 9 and FIG.
The state in which the outrigger 30 is projected to the length limited by the limiting means for limiting the protruding length of the outrigger 30,
It is a cross-sectional side view which removed and showed one side surface part of the receiving beam 1. Hereinafter, with reference to these figures and the above-mentioned figures, the configuration and the like of the means for limiting the protruding length (maximum delivery amount) of the outrigger 30 will be described.

As shown in FIGS. 5 and 6, convex stoppers (first convex portions) 45 and 46 are fixedly provided on the upper side of one side surface of the outrigger 30. The attachment position of the stopper 46 is separated from the attachment position of the stopper 45 by a predetermined length in the proximal direction of the outrigger 30, and is downwardly separated from the attachment position of the stopper 45 by a predetermined length. That is, each stopper 45,
The mounting position of 46 is displaced stepwise along the transport direction of the outrigger 30.

On the other hand, as shown in FIG. 8, the inner wall surface near the end of the receiving beam 1 (the inner wall surface of the outrigger housing portion 19).
Stoppers (second protrusions) 47 and 48 are provided at positions (heights) corresponding to the stoppers 45 and 46 provided on the outrigger 30 so as to be detachable by, for example, bolting. There is.

Of the detachable stoppers 47 and 48, the stopper 47 is attached to the receiving beam 1 and the outrigger 3 is attached.
When 0 is sent, the stopper 45 on the outrigger 30 side and the stopper 47 on the receiving beam 1 side shown by the dotted line in FIG. 5 come into contact with each other to stop the outrigger 30, as shown by the alternate long and short dash line in FIG. The delivery amount (projection length) is limited.

On the other hand, when the stopper 48 is attached to the receiving beam 1 and the outrigger 30 is delivered, as shown by the alternate long and short dash line in FIG.
The stopper 48 on the receiving beam 1 side indicated by the middle dotted line contacts and the outrigger 30 stops, and the delivery amount (projection length) is limited.

Specifically, when the stopper 47 is attached to the receiving beam 1, as shown in FIG.
In a state where the side stopper 45 contacts the stopper 47 on the receiving beam 1 side and the delivery of the outrigger 30 is stopped, about 1/4 of the entire length of the outrigger 30 projects from the end of the receiving beam 1.

When the stopper 48 is attached to the receiving beam 1, as shown in FIG. 10, the stopper 46 on the outrigger 30 side comes into contact with the stopper 48 on the receiving beam 1 side to stop the delivery of the outrigger 30. Outrigger 3 in the state
About 0, about 1/3 of its total length projects from the end of the receiving beam 1.

When the stopper 47 and the stopper 48 are not attached to the receiving beam 1, the delivery of the outrigger 30 is stopped and the outrigger 30 is stopped while the hydraulic cylinder 32 is fully extended, as described with reference to FIG. The approximately half of the entire length of the beam projects from the end of the receiving beam 1.

As described above, the climbing frame 9
In A, the protruding length of the outrigger 30 (the length from the end of the beam 1 to the tip of the outrigger 30) can be adjusted in three steps. As a result, the climbing mount 9
A can be used by projecting the outrigger 30 to an appropriate length according to the place where the span of the main beam 56 has various lengths.

Further, if the projecting lengths of the two outriggers 30 projecting in the same direction out of the four outriggers 30 of the climbing frame 9A are adjusted so that the projecting lengths of the other two outriggers 30 are different, Tower mast 3
It is possible to decenter (shift) the center axis (center of rotation of the crane) from the center of the span of the permanent beam 56. This is effective in the following cases. That is, one wants to center the swing of the crane on either side in order to be able to use the crane in all of the building's areas, along with some other tower cranes. Usually, the central axis of the tower mast 3 is often located at the center of the span of the main beam 56 so that the main beams 56 on both sides are evenly weighted.

Further, depending on the structure of the building, there are cases where the two main beams 56 for installing the tower crane are not parallel but slanted (eg, "C" shape). In such a case, the protruding length of the outrigger 30 of one of the receiving beams 1 of the climbing frame 9A and the outrigger 30 of the other receiving beam 1
The climbing frame 9 </ b> A can be used by adjusting the protrusion length to be different.

As described above, the climbing pedestal 9A can be used by projecting each outrigger 30 to an appropriate length in accordance with installation locations of various shapes and sizes, and is highly versatile.

Further, since the outriggers 30 are detachably installed on the climbing frame 9A as described above, similar outriggers 30 having different lengths are prepared, and the outriggers 30 are detached from the receiving beam 1 and the outriggers 30 are removed. By exchanging, the protruding length of the outrigger 30 can be changed. As a result, the protruding length of the outrigger 30 can be adjusted in a wider range, and in the above-described case, a wider range of conditions can be accommodated and the versatility is higher.

Here, in the illustrated embodiment, the outrigger 30 has such a length that the entire outrigger 30 is housed in the receiving beam 1, but the outrigger 30 does not interfere with the climbing of the tower crane ( It may be retracted to the inside so that it does not interfere with the main beam 56). Therefore, when replacing the outrigger 30 with a different length, the outrigger 3
The length of 0 does not necessarily have to be a length that can be stored in the receiving beam 1 as long as it is a length that can be stored (retracted) in the receiving beam 1 to an extent that does not hinder climbing of the tower crane. Good. That is, a longer one than the illustrated outrigger 30 can be used.

By providing the replaced outrigger 30 with the same stoppers as the stoppers 45 and 46 as described above, the protruding length can be adjusted in various ways.

As shown in FIGS. 5, 7, 9, and 10,
On the lower side of the side portion of the outrigger 30, the outrigger 30
A plurality of fixing holes 50 are provided along the longitudinal direction of the. Further, as shown in FIG. 1, the receiving beam 1 is provided with a pin insertion hole 51 at a position (height) corresponding to each fixing hole 50 on a side surface portion near the end portion. Each fixing hole 50 is
As described above, it is formed at a position corresponding to the pin insertion hole 51 in each state when the protruding length of the outrigger 30 is adjusted in three steps.

When the climbing frame 9A is fixed to the main beam 56 (when the tower crane is used), the pin insertion hole 51 of the receiving beam 1 and the fixing hole 50 of the outrigger 30 are overlapped with each other. , The fixing pin 57 is inserted. As a result, the outrigger 30 is fixed in a state of protruding with respect to the receiving beam 1. Thus, the fixing pin 57 constitutes a fixing means for fixing the outrigger 30 in a protruding state. When the tower crane is used, the tower crane exerts a downward force on the climbing pedestal 9A due to the weight of the tower crane and the suspended load, and also exerts a force of, for example, several tens of tons in the horizontal direction. In the climbing frame 9A, the receiving beam 1 and the outrigger 30 are firmly fixed by the fixing pin 57,
Even when such a force is applied, the receiving beam 1 is outrigger 3
The tower crane can be stably supported without moving with respect to zero.

The fixing means for fixing the outrigger 30 in the protruding state is not limited to the structure like the fixing pin 57, and for example, the engagement between the concave portion and the convex portion, the insertion of the wedge-shaped member, and the fixing by bolting. And so on.

FIG. 12 is a sectional plan view taken along the line EF in FIG. 5, and FIG. 13 is a sectional front view taken along the line GH in FIG. Hereinafter, the configuration and the like of the receiving beam 1 will be described in detail with reference to these drawings and the above-mentioned drawings. Note that, in FIG. 13, the outrigger 30 is omitted and only the receiving beam 1 is illustrated.

As shown in these figures, the receiving beam 1 has a cylindrical outer frame 6 having a substantially quadrangular cross-sectional shape that is long in the vertical direction.
Have two. As shown in FIG. 13, two partition plates (partition wall portions) 64 are horizontally installed inside the outer frame 62. That is, the cross-sectional shape of the receiving beam 1 is substantially the shape of an "eye". As a result, the inside of the outer frame 62 is vertically divided into three spaces, and from the top, the upper reinforcement plate installation portion 60, the outrigger storage portion 19, and the lower reinforcement plate installation portion 6 are arranged.
1 is formed. The outrigger 30 is slidably installed (inserted) in the central outrigger housing 19. Further, the two partition plates 64 are provided over the entire length of the receiving beam 1, as shown in FIG.

Flange 68 is horizontally formed at four corners of the outer peripheral portion of the outer frame 62. Also, the outer frame 62
The vertical ribs 69 are provided at a plurality of positions on the side surface portion along the longitudinal direction.

Inside the upper reinforcing plate installation portion 60 and the lower reinforcing plate installation portion 61, a plurality of reinforcing plates 63 are provided perpendicularly to the longitudinal direction. That is, each of these reinforcing plates 63 is
The upper reinforcing plate installation portion 60 and the lower reinforcing plate installation portion 61 are like partition walls that partition the inside into a plurality of spaces in the longitudinal direction.

The reinforcing plate 63 is installed at a position where a large force is applied from the outrigger 30 when the climbing frame 9A is fixed to the main beam 56 and supports the tower crane. It constitutes a reinforcing member for reinforcing.

Specifically, FIG. 7, FIG. 9 and FIG.
As shown in 0, the reinforcing plates 63 are installed at the positions corresponding to the base ends of the outriggers 30 when the outriggers 30 are projected in the lengths adjusted in the above three stages. A reinforcing plate 63 is also installed at the end portion of the receiving beam 1 to which a large force is applied regardless of the protruding length of the outrigger 30, and the reinforcing plate 63 is thicker than the other reinforcing plates 63. It is supposed to be. In addition, the reinforcing plate 63 is appropriately installed at other positions.

When the outrigger 30 shown in FIG. 7 is in the maximum protruding state, the greatest force is applied to the portion corresponding to the lower corner portion 65 of the outrigger 30. For this reason, in the lower reinforcement plate installation portion 61 at this position, in addition to the reinforcement plate 63, four sub-reinforcement plates 67a to 67d are provided perpendicularly to the horizontal plane, and the emphasis reinforcement portion 66 is formed. There is.

The sub-reinforcing plates 67a to 67d are like partition walls that partition the space partitioned by the reinforcing plate 63 into a plurality of spaces. Specifically, as shown in FIG.
The sub-reinforcing plates 67a and 67b are the reinforcing plates 63, respectively.
The sub-reinforcing plates 67c and 67d are installed on one side of the reinforcing plate 63, and the sub-reinforcing plates 67c and 67d are installed on the other side of the reinforcing plate 63.
The sub-reinforcing plate 67a is inclined at an angle of approximately 45 ° with respect to the reinforcing plate 63, and the sub-reinforcing plate 67b is included in the reinforcing plate 6.
3 is inclined by 45 ° in the direction opposite to the auxiliary reinforcing plate 67a. Similarly, the sub-reinforcing plate 67c is the reinforcing plate 6 concerned.
3 is inclined at about 45 °, and the sub-reinforcing plate 67d is
The reinforcing plate 63 is inclined at an angle of about 45 ° in the direction opposite to the auxiliary reinforcing plate 67c. In other words, the auxiliary reinforcing plate 67a
˜67d are arranged in a cross shape with the reinforcing plate 63 sandwiched therebetween. With such an important reinforcing portion 66, the receiving beam 1
Is capable of sufficiently withstanding a large force applied when the outrigger 30 is in the maximum protruding state.

As described above, the receiving beam 1 includes the outer frame 62,
It has a box structure (hollow structure) including a partition plate 64, a reinforcing plate 63, and the like. As a result, the reinforcing member can be appropriately arranged in a place where a large force is applied, and high strength can be obtained. Therefore, the climbing mount 9A is
It can withstand the weight of a large tower crane or the load from a heavy suspended load, and can be widely used for various tower cranes of various sizes. Further, since the structure is streamlined with no unnecessary members, the weight of the receiving beam 1 can be reduced. Therefore, the climbing mount 9A can be easily installed, removed, and transported.

FIG. 14 is a block diagram of a hydraulic control system including a hydraulic cylinder 32 and a hydraulic unit 29. Hereinafter, a safety mechanism that protects the hydraulic cylinder 32 will be described with reference to FIG.

When the tower crane is used, the receiving beam 1 and the outrigger 30 are fixed by the fixing pin 57 as described above, but the pin insertion hole 51 of the receiving beam 1 and the fixing hole 50 of the outrigger 30 are fixed. Since a play is provided between the pin 57 and the pin 57, the receiving beam 1
And the outrigger 30 are relatively movable in the longitudinal direction by, for example, about several millimeters. Within the play range, the fixing pin 57 does not bear the horizontal force from the tower crane as described above, and the force acts on the hydraulic cylinder 32. Therefore, the hydraulic cylinder 3
The hydraulic cylinder 32 may be damaged due to the buckling of the hydraulic cylinder 2.

In the climbing mount 9A, the direction in which the hydraulic cylinder 32 expands and contracts is parallel to the direction in which the outrigger 30 projects (the longitudinal direction of the receiving beam 1), as described above. Accordingly, even in the case as described above, the force applied to the hydraulic cylinder 32 acts in parallel with the direction in which the piston rod 32a expands and contracts, and does not act to bend the hydraulic cylinder 32. Therefore, it is difficult for an excessive force to be applied to the hydraulic cylinder 32.

Further, as described above, the climbing frame 9A can adjust the protruding length of the outrigger 30, so that the protruding length of the outrigger 30 can be easily installed according to the installation location. Since the force is not fixed while remaining between 30 and the receiving beam 1, no extra force acts on the hydraulic cylinder 32.

As described above, the climbing mount 9A is constructed so that the hydraulic cylinder 32 is not overloaded, and the hydraulic cylinder 32 is less likely to be damaged. Further, the climbing frame 9A is provided with a safety mechanism that releases excessive force applied to the hydraulic cylinder 32 to protect the hydraulic cylinder 32.

As shown in FIG. 14, the hydraulic cylinder 32
Is a double-acting hydraulic cylinder that can apply hydraulic pressure to both sides of the piston 32b. That is, the hydraulic pressure (positive pressure) can be applied to both the first chamber 32c on the bottom side and the second chamber 32d on the opening side in the hydraulic cylinder 32. When positive pressure is applied, the piston rod 32a expands, and when positive pressure is applied to the second chamber 32d, the piston rod 32a contracts. One end of the extension flow passage 101 is connected to the first chamber 32c of the hydraulic cylinder 32, and one end of the contraction flow passage 102 is connected to the second chamber 32d. The other ends of the extension flow path 101 and the contraction flow path 102 are connected to the hydraulic unit 29. Although the hydraulic cylinders 32 are provided for the four outriggers 30 on the climbing frame 9A, only one hydraulic cylinder 32 of them is representatively shown in FIG. The other three are connected in parallel with this.

The hydraulic unit 29 has a tank 91 for storing hydraulic oil, a pump 92 for driving the motor 90 to supply the hydraulic oil, and a hydraulic cylinder 32 for appropriately switching the hydraulic oil sent from the pump 92. Switching valve 93 for supplying to
A strainer 94 that supplies the hydraulic oil in the tank 91 to the pump 92, an air breather 95 with an oil supply port for supplying oil into the tank 91, an oil level gauge 96, a pressure gauge 97, and the pump 92 have sent oil. Sending channel 98 for sending hydraulic oil
And a return flow path 99 for returning the hydraulic oil returning from the hydraulic cylinder 32 to the tank 91.

As will be described below, the switching valve 93 has a function as the safety mechanism because of its structure.

The switching valve 93 includes a feed passage 98 and a return passage 9
9 is connected to the extension flow path 101 and the contraction flow path 102, respectively, and the piston rod 32a is extended, and conversely, the feed flow path 98 and the return flow path 99 are respectively connected to the contraction flow path 102. Is connected to the extension flow path 101 and the piston rod 32a can be switched to a contracted state. When displacing the outrigger 30, the switching valve 9
3 is set to one of these states.

The switching valve 93 can be switched to a state in which the extension flow passage 101 and the contraction flow passage 102 are connected (short-circuited). Move the outrigger 30 until it protrudes to a predetermined length, and climbing stand 9A.
After fixing to the main beam 56, the switching valve 93 is brought into this state. This prevents an excessive force from being applied to the hydraulic cylinder 32, as will be described next.

For example, when a compressive force acts on the hydraulic cylinder 32 and the piston rod 32a tries to move slightly in the contracting direction, the working oil in the first chamber 32c expands.
A small flow into 01. Extension channel 101 and contraction channel 102
Are short-circuited by the switching valve 93, so that the extension flow path 1
01 and the contraction flow passage 102 have hydraulic oil in the extension flow passage 10
A small amount of the hydraulic oil in the contraction flow channel 102 is pushed into the second chamber 32d by being pushed out by the hydraulic oil that has flowed into the first chamber 32d. in this way,
The hydraulic oil pushed out from the first chamber 32c of the hydraulic cylinder 32 returns to the second chamber 32d of the hydraulic cylinder 32 through the extension flow passage 101 and the contraction flow passage 102 in order, so that
The hydraulic pressure in the chamber 32c is not released, and the hydraulic pressure does not increase.

On the contrary, when a pulling force acts on the hydraulic cylinder 32, the hydraulic oil flows in the opposite direction, whereby the hydraulic pressure in the second chamber 32d is released and the hydraulic pressure increases. Never. Therefore, in this state, the piston rod 32a can freely expand and contract. As a result, an excessive force does not act on the hydraulic cylinder 32, and there is no risk that the hydraulic cylinder 32 will buckle or the hydraulic unit 29 will be damaged. Also, instead of a large hydraulic cylinder that can withstand a force of several tens of tons,
A much smaller hydraulic cylinder can be used, reducing manufacturing costs.

FIG. 16 (a) is a sectional front view of the receiving beam 1 with the vertical breath 2 removed, and FIG. 16 (b) is a side view of the upper bracket 81 and the lower bracket 82 to which the vertical breath 2 is attached. . Hereinafter, the configuration of the vertical breath 2, the configuration of the connecting portion between the receiving beam 1 and the vertical breath 2, and the like will be described with reference to these figures and the above-mentioned figures. However, since the connecting portions between the both ends of the vertical brace 2 and each receiving beam 1 have the same configuration, regarding the configuration on one side,
A representative description will be given. Note that the illustration of the outrigger 30 is omitted in FIG.

As described above, the pair of receiving beams 1 are connected to each other by the pair of vertical braces 2.
As shown in FIG. 15, the vertical brace 2 includes an upper horizontal bar 70 that connects the upper ends of the receiving beams 1 to each other, a lower horizontal bar 71 that connects the lower ends of the receiving beams 1 to each other, and a substantially “x”. And a crossbar 76 having a character shape. The crossbar 76 is configured by joining the crossbar piece 72, the first crossbar half piece 73, and the second crossbar half piece 74 at the intermediate connecting portion 75.

The vertical breath 2 further includes one end portion 70a of the upper horizontal bar 70 and one end portion 72a of the crossbar piece 72.
And the other end 7 of the upper horizontal bar 70 and the connecting piece 77 for connecting
0b and one end 73a of the first crossbar half 73, and a connecting piece 79 connecting one end 71a of the lower horizontal bar 71 and one end 74a of the second crossbar half 74. The connecting piece 80 connects the other end portion 71b of the lower horizontal bar 71 and the other end portion 72a of the crossbar piece 72.

As described above, the vertical breath 2 is a frame-shaped structure constructed by combining a plurality of bars (beams). Then, two bolt holes arranged along the horizontal direction are formed at the four corners of the vertical breath 2, respectively.

As shown in FIG. 16, an upper bracket 81 and a lower bracket 82 to which the vertical brace 2 is attached are installed above and below the inner side surface of the receiving beam 1, respectively. The upper bracket 81 and the lower bracket 82 are U-shaped when viewed from the side, and are provided so as to project in a direction perpendicular to the longitudinal direction of the receiving beam 1.

Upper bracket 81 and lower bracket 82
A bolt hole 86 corresponding to the bolt hole of the vertical brace 2 is formed in the vertical brace 2.
1 and the lower bracket 82 can be fixed with a bolt 87. In this way, the receiving beam 1
And the vertical breath 2 are connected.

Upper bracket 81 and lower bracket 82
There are provided five bolt holes 86 in each of the horizontal direction. The two bolt holes 86 selected from the five bolt holes 86 are provided with the above-mentioned two corners of the vertical brace 2.
The vertical brace 2 is attached by aligning the three bolt holes. By selecting the bolt hole 86 for mounting the vertical brace 2, the mounting and fixing position of the vertical brace 2 with respect to the receiving beam 1 is, for example, 4 in the direction perpendicular to the receiving beam 1.
Can be changed in stages. Accordingly, the climbing frame 9A can adjust the distance between the pair of receiving beams 1 in four steps.

Here, in the tower crane, the size of the leg 6 (the protruding length from the central axis of the tower mast 3) varies depending on the type and size of the tower crane. The climbing stand 9A is
With the configuration as described above, various tower cranes can be installed by adjusting the distance between the pair of receiving beams 1 according to the size of the legs 6 of the tower crane.

FIG. 3 is a partially cutaway bottom view of the lower knot, and FIG. 4 shows the receiving beam 1 with the lower knot 13 removed.
FIG. Hereinafter, with reference to these drawings, the configuration of the lower kakushi 13 and the configuration of the fixed part between the lower kakushi 13 and the receiving beam 1 will be described.

As shown in FIG. 3, the lower shavings 13 have a shavings main body 16 and a pair of mounting plates 17 for mounting the shavings main body 16 on the receiving beam 1. The upper surface of each mounting plate 17 is aligned with the upper end surface of the Kanzashi main body 16 and is firmly fixed to the Kanzashi main body 16 at a predetermined angle (inclined) by, for example, welding. .

Two bolt holes 18 are provided in parallel at the end of each mounting plate 17 along the lateral direction of the mounting plate 17. These bolt holes 18
Are arranged so as to be respectively located at the four vertices of the elongated rectangle.

On the other hand, as shown in FIG. 4, a flange 20 is provided on the outer side surface of the receiving beam 1, and a flange 21 is provided on the inner side surface of the receiving beam 1. The flanges 20 and 21 are plate members each having a substantially rectangular shape, and the lower surface thereof is aligned with the lower end surface of the receiving beam 1 and is fixed to the receiving beam 1 by welding, for example. Also, the flanges 20, 2
1 have substantially the same shape and are installed so as to face each other with the receiving beam 1 interposed therebetween. The flange 21 is attached to a position that is displaced from the attachment position of the flange 20 by a predetermined length in the end portion direction of the receiving beam 1.

Each of the flanges 20 and 21 has six bolt holes 20 arranged along the longitudinal direction of the receiving beam 1.
a and 21a are provided. The bolt hole 20 a of the flange 20 and the bolt hole 21 a of the flange 21 are different from each other in the receiving beam 1
Are arranged at the same position in the longitudinal direction. Also,
Notches 20b and 21b are formed in the flanges 20 and 21 at the positions where the bolts 25 are inserted, respectively.

The lower bolt 13 has four bolt holes 1
8 are aligned with two adjacent two selected from the six bolt holes 20a of the flange 20 and the two bolt holes 21a located at the same position in the longitudinal direction of the receiving beam 1 and the bolts 20a. It is designed to be attached with. By selecting the bolt hole 20a (or 21a), the lower kakushi 13 can adjust the mounting and fixing position with respect to the receiving beam 1 in four steps along the longitudinal direction of the receiving beam 1.

As described above, the lower knot seal 13 can be attached and fixed to the lower surface of the receiving beam 1 by itself by bolting. On the other hand, when the lower crane 13 cannot be attached to the receiving beam 1 by itself, when the folding crane 4 of the tower crane is fixed on the climbing platform 9A when the tower crane is installed, the lower crane 13 Need to be supported by some means. Further, when removing the folding gantry 4 from the climbing gantry 9A when removing the tower crane, it is necessary to similarly support the lower knapsack 13. But,
Since the lower kanzashi 13 is a heavy object and is located below the receiving beam 1, the crane cannot be used, and it is difficult to support the crane, which imposes a heavy burden on the operator.

On the other hand, according to the climbing stand 9A, when the folding stand 4 of the tower crane is installed,
It is possible to preliminarily attach the lower shavings 13 to the lower surface of the receiving beam 1, and it is not necessary to support the lower shavings 13. Also,
Even when removing the folding frame 4 of the tower crane, it is not necessary to support the lower kanzashi 13. As a result, the work can be performed quickly, easily and safely, and the burden on the worker is reduced.

Further, since the mounting and fixing position of the lower kakushi 13 with respect to the receiving beam 1 can be adjusted in four steps along the longitudinal direction of the receiving beam 1, the legs 6 of the tower crane can be adjusted.
According to the size of (the length of protrusion from the central axis of the tower mast 3), adjust the mounting position of the lower kanzashi 13,
A tower crane can be installed. This allows
It is possible to support various types of tower cranes having different sizes of the legs 6.

The climbing mount of the present invention has been described above with reference to the illustrated embodiment, but the present invention is not limited to this, and each unit constituting the climbing mount is capable of exhibiting the same function. It can be replaced with that of the configuration. For example, the pair of receiving beams 1 may have different lengths.

The safety mechanism for preventing an excessive force from acting on the hydraulic cylinder 32 is not limited to the structure shown in the drawing, but may be, for example, the connecting portion between the hydraulic cylinder 32 and the receiving beam 1 or the piston rod 32a. The hydraulic cylinder 32 may be installed at the connection with the outrigger 30 via an elastic member such as rubber that absorbs an excessive force.

[0125]

As described above, according to the present invention, the safety mechanism for releasing the external force acting on the hydraulic cylinder when it is fixed to the building to prevent the hydraulic cylinder from being applied with an excessive force. By providing the, it is possible to prevent damage to the hydraulic cylinder due to buckling or the like.

Also, a small and inexpensive hydraulic cylinder can be used in place of the large hydraulic cylinder that can withstand a large external force, and the manufacturing cost can be reduced.

Further, when the safety mechanism is a switching valve capable of connecting the extension passage and the contraction passage of the hydraulic cylinder,
The above effect can be achieved without complicating the structure.

If the hydraulic cylinder is installed so that the direction in which the hydraulic cylinder expands and contracts is parallel to the direction in which the projecting member displaces, no bending force acts on the hydraulic cylinder. Therefore, the load on the hydraulic cylinder can be further reduced.

When the protruding length of the protruding member can be adjusted or the protruding member can be replaced with one having a different length, the protruding member can be adjusted in accordance with the shapes and dimensions of various installation locations. It can be used by protruding to an appropriate length. Therefore, it is possible to further reduce the load on the hydraulic cylinder when the climbing frame is fixed to the building.

Further, when the receiving beam is constructed such that the partition wall portion is provided inside the tubular portion, the receiving beam has high strength and the projecting member is securely held by the receiving beam. . Therefore, the amount of movement of the projecting member with respect to the receiving beam in the state of being fixed to the building becomes smaller, and thus the load on the hydraulic cylinder is further reduced.

[Brief description of drawings]

FIG. 1 is a side view showing a first embodiment of a climbing mount of the present invention.

2 is a plan view of the climbing mount shown in FIG. 1. FIG.

FIG. 3 is a partially cutaway bottom view of the lower crane for fixing the crane.

FIG. 4 is a bottom view of the receiving beam with the lower crane fixing crane removed.

FIG. 5 is a sectional side view showing a state in which all outriggers are housed in the receiving beam.

6 is a cross-sectional front view of the outrigger taken along the line AB in FIG.

FIG. 7 is a cross-sectional side view showing a state in which the outriggers protrude to the maximum protrusion length.

FIG. 8 is a front view of the receiving beam with an outrigger removed.

FIG. 9 is a cross-sectional side view showing a state in which the outrigger projects to a length limited by a limiting means that limits the protruding length of the outrigger.

FIG. 10 is a cross-sectional side view showing a state in which the outrigger projects to a length limited by a limiting means that limits the protruding length of the outrigger.

11 is a cross-sectional plan view of the outrigger taken along the line C-D in FIG.

12 is a cross-sectional plan view of the receiving beam taken along the line EF in FIG.

13 is a sectional front view of the receiving beam taken along the line GH in FIG.

FIG. 14 is a block diagram of a hydraulic control system including a hydraulic cylinder and a hydraulic unit.

15 is a front view of the climbing mount shown in FIG. 1. FIG.

FIG. 16 is a view showing an upper bracket and a lower bracket of a beam to which a vertical brace is attached.

FIG. 17 is a diagram for explaining a climbing method for a tower crane.

[Explanation of symbols]

1 Receiving beam 2 vertical breath 3 tower mast 4 folding mount 5 Folding stand body 6 Folding stand legs 8 crane body 9A climbing mount 10 Upper hawthorn 11 Bolt insertion hole 13 Lower Kanzashi 14 bolt insertion hole 16 Kanzashi body 17 Mounting plate 18 bolt holes 19 Outrigger storage 20 flange 20a bolt hole 20b cutout 21 flange 21a Bolt hole 21b Notch 25 Kanzashi Bolt 28 bracket 29 Hydraulic unit 30 Outrigger 32 hydraulic cylinder 32a piston rod 32b piston 32c first room 32d second room 33 Vertical reinforcing plate 34 Parallel reinforcing plate 35 Tip plate 36 Base plate 37 Cylinder through hole 38 Cylinder insertion hole 39 Piston rod tip 40 Connection pin insertion hole 41 connection pin 42 holes 45 stopper 46 Stopper 47 Stopper 48 stopper 49 connection pins 50 fixing holes 51 pin insertion hole 52 Upper Kanzashi 53 Lower Kanzashi 54 Kanzashi Bolt 55 Vertical auxiliary reinforcement plate 56 permanent beams 57 fixing pin 60 Upper reinforcement plate installation section 61 Lower reinforcing plate installation section 62 outer frame 63 Reinforcement plate 64 partition boards 65 Lower corner of outrigger 66 important point reinforcement section 67a-67d Sub-reinforcing plate 70 Upper horizontal bar 70a One end of upper horizontal bar 70b The other end of the upper horizontal bar 71 Lower horizontal bar 72 Crossbar piece 73 First Crossbar Half 74 Second Crossbar Half 75 Intermediate connection 76 Crossbar 77 connection piece 78 connection piece 79 connection piece 80 connection pieces 81 Upper bracket 82 Lower bracket 86 bolt holes 87 volts 90 motor 91 tank 92 pumps 93 switching valve 94 Strainer 95 Air Breather 96 Oil level gauge 97 Pressure gauge 98 feed channel 99 return flow path 101 extension channel 102 contraction channel 116 nuts 145 nuts 200 climbing mount 210 Beam 220 Outrigger 300 bell cradle

Claims (9)

(57) [Claims] 1. A pair of receiving beams arranged substantially parallel to each other and capable of mounting and fixing legs of a tower crane, and projecting members projecting from both ends of each receiving beam and displaceable in a longitudinal direction of the receiving beam. A hydraulic cylinder for displacing the projecting member, and a fixing means for fixing the projecting member in the projecting state. At all times, the projecting member in the projecting state and the beam of the building are fixed, and the tower is fixed. A climbing stand for releasing the fixing of the projecting member and the beam of the building and climbing by retracting the projecting member during climbing of the crane, wherein the projecting member and the building are fixed. In the state
When an external force acts on the hydraulic cylinder, a safety mechanism is provided to release the force and prevent an excessive force from acting on the hydraulic cylinder. The fixing means is formed on the projecting member and the receiving beam, respectively. A climbing pedestal, characterized in that the external force acting on the hydraulic cylinder is a force caused by displacement of play of the projecting member with respect to the receiving beam when the pin is inserted. 2. The hydraulic cylinder is a double-acting hydraulic cylinder capable of exerting a positive pressure in the extension direction and the contraction direction of the piston, and the safety mechanism is a flow passage for exerting a positive pressure in the extension direction. The climbing mount according to claim 1, wherein the climbing mount is a switching valve capable of connecting the flow path for applying a positive pressure to the contraction direction. 3. The receiving beam includes a tubular portion having a substantially quadrangular cross-sectional shape, and a partition wall portion extending in the longitudinal direction of the receiving beam and partitioning the inside of the tubular portion into a plurality of spaces. The partition wall section divides the inside of the cylindrical section into at least three spaces along the climbing direction of the climbing frame, and the projecting member is located in the central space of the three spaces. The climbing mount according to claim 1 or 2, which is inserted. 4. The projecting member according to claim 1, wherein at least two projecting members projecting in the same direction among the projecting members are exchangeably installed to those having different lengths. Climbing mount. 5. The climbing frame according to claim 1, wherein the projecting lengths of at least two projecting members of the projecting members that project in the same direction can be adjusted. 6. The climbing frame according to claim 5, wherein the protruding length of each of the protruding members can be independently adjusted. 7. The climbing mount according to claim 5, wherein the protrusion length of the protrusion member can be adjusted stepwise. 8. The climbing frame according to claim 5, wherein the protrusion length of the protrusion member is adjusted by a limiting unit that limits the protrusion length of the protrusion member. 9. The limiting means is provided on the protruding member, and is detachably provided on a plurality of first convex portions at positions corresponding to different protruding lengths of the protruding member and the receiving beam. And a second selectively engaging with each of the first protrusions.
The climbing mount according to claim 8, further comprising: