JP7597082B2 - Guide members and construction machinery - Google Patents

Description

The present invention relates to a guide member and a construction machine.

In construction machinery such as cranes, a work rope is hung behind the boom, jib, or other elevation-raising member in the longitudinal direction of the member. This work rope hangs down from the tip of the elevation-raising member and is connected to a hook, bucket, or the like. This construction machinery performs work by raising and lowering the work rope. At this time, the work rope may swing due to the raising and lowering of the work rope itself or the rotation of the upper rotating body.

If the work rope sways too much, it may extend outside the hoisting member and get caught on connecting pins, guide rollers, brackets, etc., that are placed on the hoisting member. If this happens, construction work may have to be stopped to return the work rope to its normal trajectory, and there is also a risk of damage to the hoisting member or the work rope.

For this reason, today, guide members are attached to the hoisting members to suppress the swaying of the work rope (see Patent Document 1).

Japanese Patent Application Publication No. 10-218570

Patent Document 1 describes a rope prevention device consisting of a gate-shaped support pillar that encloses the rope that is stretched along the back of the boom. However, this gate-shaped support pillar may be damaged if a large force is applied from the work rope. In addition, the gate-shaped support pillar may be damaged and fall from a high place.

In view of the above-mentioned inconveniences, the present invention aims to provide a guide member that can prevent the guide member from falling due to breakage.

The guide member according to one aspect of the present invention, which was made to solve the above problems, is a guide member that suppresses the swaying of a work rope that is hung along the longitudinal direction of the hoisting member behind the hoisting member of a construction machine, and includes a tubular member that surrounds the work rope between the hoisting member and the hoisting member, a wire rope that is inserted into the tubular member, and attachment parts that can fix both ends of the wire rope to the hoisting member.

The guide member according to one aspect of the present invention can prevent the guide member from falling due to breakage.

FIG. 1 is a schematic side view showing a construction machine according to an embodiment of the present invention. FIG. 2 is a schematic front view showing a state of a guide member to be attached to the undulating member of the construction machine of FIG. 1 before being attached to the undulating member. 3 is a cross-sectional view of the guide member taken along line III-III of FIG. FIG. 4 is a schematic perspective view showing the guide member of FIG. 2 attached to the undulating member. FIG. 5 is a schematic partially enlarged perspective view showing the guide member of FIG. 2 attached to the undulating member. FIG. 6 is a schematic front view showing a state before a guide member according to an embodiment different from the guide member in FIG. 2 is attached to an undulating member. FIG. 7 is a schematic front view showing a modified example of the guide member of FIG.

[Description of the embodiments of the present invention]
First, the embodiments of the present invention will be listed and described.

The guide member according to one aspect of the present invention is a guide member that suppresses the swaying of a work rope that is hung along the longitudinal direction of the hoisting member behind the hoisting member of a construction machine, and includes a tubular member that surrounds the work rope between the hoisting member and the hoisting member, a wire rope that is inserted into the tubular member, and attachment parts that can fix both ends of the wire rope to the hoisting member.

The guide member is configured so that a wire rope is inserted inside the tube member and both ends of the wire rope can be fixed to the hoisting member, thereby preventing the tube member from falling due to damage. In other words, even if the tube member is partially cut or bent, the wire rope is inserted inside the tube member and both ends of the wire rope are fixed to the hoisting member, preventing the tube member from falling away from the wire rope.

The wire rope may have protrusions protruding from both ends of the tube member, and the protrusions may be fixed to the mounting portion. In this way, the wire rope may have protrusions protruding from both ends of the tube member, and the protrusions may be fixed to the mounting portion, thereby more reliably preventing the tube member from falling.

It is preferable that the width between both ends of the tube member is smaller than the width of the undulating member. In this way, by making the width between both ends of the tube member smaller than the width of the undulating member, the transport width of the undulating member can be prevented from becoming large.

The mounting portion may include a first member that extends in the width direction of the undulating member and is attached to the undulating member, and a pair of second members that fix the wire rope to the first member inside both ends of the undulating member in the width direction. In this way, the mounting portion may include a first member that extends in the width direction of the undulating member and is attached to the undulating member, and a pair of second members that fix the wire rope to the first member inside both ends of the undulating member in the width direction, so that the width between both ends of the tube member can be made smaller than the width of the undulating member, while the wire rope can be easily and reliably fixed to the undulating member.

The guide member may include support portions fixed to both ends of the tube member along the longitudinal direction of the tube member. By providing support portions fixed to both ends of the tube member along the longitudinal direction of the tube member, the strength of the tube member can be reinforced while allowing the tube member to easily and reliably stand on its own relative to the undulating member.

The guide member may include a connecting member that is connected across a position on the tube member that is fixed by the support portion and a position on the tube member that is not fixed by the support portion. When the guide member includes the support portion, the tube member may be easily damaged at the boundary between the portion that is fixed by the support portion and the portion that is not fixed by the support portion. Even in such a case, by including a connecting member that is connected across a position on the tube member that is fixed by the support portion and a position on the tube member that is not fixed by the support portion, it becomes easier to prevent the tube member from falling.

It is preferable that the bent portion of the tubular member is smoothly curved. In this way, the bent portion of the tubular member is smoothly curved, so that the wire rope can be easily and reliably inserted into the tubular member.

A construction machine according to another aspect of the present invention includes a hoisting member, a work rope that is hung behind the hoisting member in the longitudinal direction of the hoisting member, and a guide member that suppresses the swaying of the work rope. The guide member has a tubular member that surrounds the work rope between the hoisting member and the guide member, a wire rope that is inserted into the tubular member, and attachment parts that fix both ends of the wire rope to the hoisting member.

The construction machine can be prevented from falling due to damage to the guide member.

[Details of the embodiment of the present invention]
Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings as appropriate.

[First embodiment]
<Construction machinery>
The construction machine 10 in Fig. 1 includes an upper revolving body 1, a hoisting member 2 attached to the upper revolving body 1 so as to be able to be raised or lowered, a work rope 3 hung on the back side of the hoisting member 2 along the longitudinal direction of the hoisting member 2, and a guide member 4 for suppressing the swaying of the work rope 3. The construction machine 10 also includes guy lines 5 hung along the longitudinal direction of the hoisting member 2 above both sides in the width direction of the hoisting member 2. The guy lines 5 are disposed above the hoisting member 2 with a gap therebetween. The work rope 3 is disposed above the hoisting member 2 at the central portion in the width direction of the hoisting member 2 with a gap therebetween. In Fig. 1, the construction machine 10 is a so-called high-post type construction machine in which the upper revolving body 1 is mounted on a lower traveling body 7 via a support 6. The construction machine 10 can be configured to include any attachment, such as a bucket, a hook, a hammer, or a magnet. In this specification, the term "back side" refers to the side that is on the top when the hoisting member is laid down, and the term "upper" refers to the upper side when the construction machine is placed on a horizontal surface, and the term "lower" refers to the lower side when the construction machine is placed on a horizontal surface.

The hoisting member 2 is, for example, a boom. The hoisting member 2 has a rectangular tubular lattice structure with four main girders. Specifically, the hoisting member 2 has a configuration in which a pair of main girders arranged on the dorsal side and a pair of main girders arranged on the ventral side form the corners of a rectangular tube, and multiple auxiliary girders are connected between adjacent main girders.

<Guide member>
The guide member 4 is itself an embodiment of the present invention. The guide member 4 suppresses the swaying of the work rope 3 that is hung along the longitudinal direction of the hoisting member 2 on the rear side of the hoisting member 2 of the construction machine 10. The arrangement and number of the guide members 4 in the longitudinal direction of the hoisting member 2 are not particularly limited. In Figure 1, three guide members 4 are arranged along the longitudinal direction of the hoisting member 2. As shown in Figure 1, the distance between the hoisting member 2 and the work rope 3 increases as one approaches the base end of the hoisting member 2. In this regard, the guide member 4 can stand on its own on the rear side of the hoisting member 2, and therefore can be easily arranged even in a position where the distance between the hoisting member 2 and the work rope 3 is large.

As shown in Figures 1 to 5, the guide member 4 includes a tube member 11 that is shaped to surround the work rope 3 between it and the hoisting member 2, a wire rope 12 that is inserted into the tube member 11, and mounting parts 13 that can fix both ends of the wire rope 12 to the hoisting member 2. The guide member 4 also includes support parts 14 that are fixed to both ends of the tube member 11 along the longitudinal direction of the tube member 11.

The guide member 4 is erected on the rear side of the undulating member 2. More specifically, the guide member 4 is arranged so as to protrude in a direction perpendicular to an imaginary plane including a pair of main girders located on the rear side of the undulating member 2. The guide member 4 includes a tubular member 11, so that its posture when erected is stable. The guide member 4 will be described in detail below.

(Tube member)
The pipe member 11 is a cylinder, and may be, for example, U-shaped, C-shaped, V-shaped, or the like. The pipe member 11 is a rigid member mainly composed of a metal or an alloy. The metal may be, but is not limited to, iron. In FIG. 2, the pipe member 11 is U-shaped. The pipe member 11 has a pair of legs 11a extending parallel to each other and an arch-shaped connecting portion 11b connecting the tips of the legs 11a. It is preferable that the curved portion of the pipe member 11 is smoothly curved. In other words, it is preferable that the boundary portion between the legs 11a and the connecting portion 11b, and the entire connecting portion 11b are smoothly curved. This configuration makes it easy to easily and reliably insert the wire rope 12 into the pipe member 11. This configuration also makes it easy to stabilize the posture of the wire rope 12 in the pipe member 11. It should be noted that the terms "U-shaped,""C-shaped," and "V-shaped" are not strictly defined; however, for example, "U-shaped" refers to a shape that protrudes in one direction at the middle part of the longitudinal direction, and is a concept that includes an angular U-shape having corners.

As shown in FIG. 4, the width between both ends of the pipe member 11 is preferably smaller than the width of the undulating member 2. In other words, the distance between both ends of the pipe member 11 is preferably smaller than the distance between a pair of main girders arranged on the rear side of the undulating member 2. It is also more preferable that both ends of the pipe member 11 are arranged to be spaced apart from the pair of main girders and fit between these main girders.

The guide member 4 has the wire rope 12 inserted into the tube member 11, so by reducing the width between both ends of the tube member 11, the width of the wire rope 12 is reduced to match the width of the tube member 11. In addition, in the construction machine 10, the width between both ends of the tube member 11 is smaller than the width of the undulating member 2, so that the transport width of the undulating member 2 can be prevented from becoming large. Furthermore, in the construction machine 10, guy lines 5 are arranged above both sides in the width direction of the undulating member 2. In this configuration, by making the width between both ends of the tube member 11 narrower than the width of the guy lines 5 (the distance between the guy lines 5 arranged above both sides in the width direction of the undulating member 2), contact between the tube member 11 and the guy lines 5 can be easily prevented.

The length of the protruding direction of the tubular member 11 is not particularly limited. The protruding length of the tubular member 11 may be changed depending on the attachment position to the hoisting member 2. For example, when the tubular member 11 is placed on the base end side of the hoisting member 2 where the distance between the hoisting member 2 and the work rope 3 is large, the protruding length of the tubular member 11 can be increased.

(Wire rope)
As shown in Fig. 3, the diameter of the wire rope 12 is smaller than the diameter of the inner peripheral surface of the tube member 11. Also, as shown in Fig. 2, the wire rope 12 has protruding parts 12a protruding from both ends of the tube member 11. That is, the wire rope 12 penetrates the inside of the tube member 11 in the longitudinal direction of the tube member 11, and is configured such that the protruding parts 12a protrude from both ends of the tube member 11. Note that the wire rope 12 may or may not be fixed to the tube member 11 inside the tube member 11. When the wire rope 12 is not fixed to the tube member 11, the guide member 4 may be inserted into the tube member 11 at any stage before the guide member 4 is attached to the undulating member 2.

(Mounting part)
As described above, the attachment parts 13 fix both ends of the wire rope 12 to the hoisting member 2. As shown in Figures 4 and 5, the protruding parts 12a of the wire rope 12 are preferably fixed to the attachment parts 13. With this configuration, the pipe member 11 is held between the fixed parts of the wire rope 12 and the attachment parts 13 (more specifically, the wire rope 12 and a pair of second members 21 described below). Therefore, the pipe member 11 can be more reliably prevented from falling.

As shown in Figures 4 and 5, the mounting portion 13 includes a first member 20 that extends in the width direction of the undulating member 2 and is attached to the undulating member 2, and a pair of second members 21 that fix the wire rope 12 to the first member 20 inside both ends of the undulating member 2 in the width direction. By configuring the mounting portion 13 in this manner, the width between both ends of the tube member 11 can be made smaller than the width of the undulating member 2, while the wire rope 12 can be easily and securely fixed to the undulating member 2. In addition, with this configuration, for example, by placing the tube member 11 on the first member 20, the posture of the guide member 4 when attached to the undulating member 2 can be stabilized.

The fixing structure of the wire rope 12 by the mounting portion 13 will be described with reference to Figures 4 and 5. The first member 20 has a mounting base 20a extending in the width direction of the undulating member 2. The mounting base 20a is, for example, rod-shaped, plate-shaped, rail-shaped, tubular, etc. The mounting base 20a has a top surface 20b on which the guide member 4 is erected. A pair of through holes through which the protrusions 12a are inserted is formed in the top surface 20b. The first member 20 also has a bracket 20c extending perpendicularly to the top surface 20b so as to follow the protrusions 12a when they have passed through the through holes. The second member 21 has a recess 21a into which the protrusions 12a when they have passed through the through holes fit. The mounting portion 13 is provided so that the protrusion 12a is sandwiched between the second member 21 and the bracket 20c by pressing the second member 21 against the bracket 20c with the protrusion 12a fitted in the recess 21a of the second member 21. The mounting portion 13 is configured so that the wire rope 12 can be fixed by fixing the second member 21 and the bracket 20c with a fixing member such as a screw with the protrusion 12a sandwiched between the second member 21 and the bracket 20c. The fixing strength of the wire rope 12 is sufficient to support the tube member 11 if the tube member 11 breaks. In addition, the diameter of the through hole formed in the top surface portion 20b is preferably equal to or greater than the diameter of the wire rope 12. By configuring in this manner, the tube member 11 can be easily placed on the top surface portion 20b.

(Support part)
The support portion 14 is disposed on the outer side of the pipe member 11 in the width direction at both ends of the pipe member 11. The support portion 14 is, for example, a rib fixed to the outer peripheral surface of the pipe member 11. The support portion 14 is fixed to the pipe member 11 and is also fixed to the mounting portion 13 (more specifically, the top surface portion 20b of the first member 20). As shown in FIG. 4 and FIG. 5, the support portion 14 has a first portion 14a extending along the longitudinal direction of the pipe member 11 and a second portion 14b extending along the top surface portion 20b. The first portion 14a and the second portion 14b are, for example, plate-shaped. The support portion 14 also has a plate-shaped third portion 14c connected to the side edges of the first portion 14a and the second portion 14b. The third portion 14c is, for example, provided in a substantially right-angled triangular shape so as to narrow from the second portion 14b side toward the protruding direction side of the guide member 4.

The guide member 4 includes a support portion 14, which reinforces the strength of the pipe member 11 while allowing the pipe member 11 to easily and reliably stand on its own relative to the undulating member 2.

<Advantages>
The guide member 4 has the wire rope 12 inserted inside the pipe member 11, and both ends of the wire rope 12 are configured to be fixable to the hoisting member 2, so that it is possible to prevent the pipe member 11 from falling due to breakage. In other words, even if the pipe member 11 is partially cut or bent, the wire rope 12 is inserted inside the pipe member 11, and both ends of the wire rope 12 are fixed to the hoisting member 2, so that it is possible to prevent the pipe member 11 from separating from the wire rope 12 and falling.

Since the construction machine 10 is equipped with the guide member 4, it is possible to prevent the machine from falling due to damage to the guide member 4. Furthermore, in a high-post construction machine 10, if the work rope 3 gets caught on various members arranged on the hoisting member 2, it becomes necessary to prepare a high-altitude work vehicle or the like to remove the caught rope, which makes the work complicated. In this respect, the construction machine 10 is able to prevent the occurrence of work caused by the work rope 3 getting caught.

[Second embodiment]
<Guide member>
The guide member 24 in Figure 6 or in Figure 7 described below is attached to the construction machine 10 in Figure 1 in place of the guide member 4 in Figure 2. When multiple guide members are attached to the undulating member 2 as in the construction machine 10 in Figure 1, it is also possible to use a combination of the guide member 4 in Figure 2 and the guide members 24 in Figures 6 and 7.

As shown in FIG. 6, the guide member 24 includes a tube member 11 that surrounds the work rope 3 between it and the hoisting member 2, a wire rope 12 that is inserted into the tube member 11, and mounting parts (not shown) that can fix both ends of the wire rope 12 to the hoisting member 2. The guide member 24 also includes support parts 14 that are fixed to both ends of the tube member 11 along the longitudinal direction of the tube member 11. The guide member 24 also includes a connecting member 15 that is connected across the positions of the tube member 11 that are fixed by the support parts 14 and the positions that are not fixed by the support parts 14.

The guide member 24 does not have the wire rope 12 protruding from either end of the tube member 11. The guide member 24 is provided so that the tube member 11 is fixed to the above-mentioned mounting portion, and is configured so that both ends of the wire rope 12 are fixed to the undulating member 2. The guide member 24 can be configured in a manner generally similar to the guide member 4 in FIG. 2, except that it is provided with a connecting member 15 and that the wire rope 12 does not protrude from either end of the tube member 11. Therefore, only the connecting member 15 will be described below.

The connecting member 15 has a first connecting portion 15a connected to a position of the pipe member 11 fixed by the support portion 14, a second connecting portion 15b connected to a position of the pipe member 11 not fixed by the support portion 14, and a play portion 15c arranged between the first connecting portion 15a and the second connecting portion 15b and spaced apart from the pipe member 11. The connecting member 15 may be arranged on the inside in the width direction of the pipe member 11 so as not to interfere with the support portion 14 at the first connecting portion 15a, for example. On the other hand, as shown in FIG. 7, from the viewpoint of suppressing interference with the work rope 3, the connecting member 15 is preferably arranged so as not to protrude inward in the width direction of the pipe member 11, and more preferably arranged on the outside in the width direction of the pipe member 11. In this case, the connecting member 15 (more specifically, the first connecting portion 15a of the connecting member 15) may be connected to the pipe member 11 via the support portion 14.

The connecting member 15 is, for example, string-shaped. When the connecting member 15 is string-shaped, for example, a wire rope can be used as the connecting member 15. In addition, the connecting member 15 may be in the form of a long belt or chain, as long as it can prevent the guide member 24 from falling.

<Advantages>
When the guide member 24 includes the support portion 14, the pipe member 11 may be easily damaged at the boundary between the portion fixed by the support portion 14 and the portion not fixed by the support portion 14. Even in such a case, the guide member 24 can easily prevent the pipe member 11 from falling by including the connecting member 15 that is connected across the position of the pipe member 11 that is fixed by the support portion 14 and the position of the pipe member 11 that is not fixed by the support portion 14. In other words, the guide member 24 can easily prevent the pipe member 11 from falling by intentionally forming a portion of the pipe member 11 that is easily damaged and arranging the connecting member 15 to straddle the easily damaged portion.

[Other embodiments]
The above-mentioned embodiment does not limit the configuration of the present invention. Therefore, the above-mentioned embodiment may omit, replace or add components of each part of the above-mentioned embodiment based on the description in this specification and common technical knowledge, and it should be understood that all of these are within the scope of the present invention.

In the above embodiment, a high-post construction machine has been described. However, the overall configuration of the construction machine is not limited to the configuration described in the above embodiment.

The guide member may be provided in a configuration that does not include the connecting member such that the tube member is fixed to the mounting portion. Also, the guide member may be provided in a configuration that includes the connecting member such that the wire rope protrudes from both ends of the tube member and the protruding portions of the wire rope are fixed to the mounting portion. Furthermore, the guide member may be provided in a configuration in which, for example, both the tube member and the wire rope are fixed to the mounting portion.

The specific configuration of the mounting part is not limited to the configuration described in the above embodiment. For example, the mounting part may be configured to directly fix the wire rope to the main girder or auxiliary girder of the escaping member.

The guide member may be configured not to have the support portion described above. Even if the guide member has a support portion, the arrangement of the support portion is not limited to the arrangement described in the above embodiment. For example, the support portion may be fixed at any position on the circumferential surface of the tube member. For example, the support portion may be arranged on the inside in the width direction of the tube member, or may be arranged on both the inside and outside.

The guide member according to one aspect of the present invention is suitable for suppressing the vibration of the work rope of a construction machine.

REFERENCE SIGNS LIST 1 Upper rotating body 2 Raising and lowering member 3 Work rope 4, 24 Guide member 5 Guy line 6 Support 7 Lower running body 10 Construction machine 11 Pipe member 11a Leg 11b Connection 12 Wire rope 12a Protrusion 13 Mounting portion 14 Support portion 14a First portion 14b Second portion 14c Third portion 15 Connecting member 15a First connecting portion 15b Second connecting portion 15c Play portion 20 First member 20a Mounting base 20b Top surface portion 20c Bracket 21 Second member 21a Recess

Claims (12)

A guide member for suppressing the sway of a work rope that is stretched along the longitudinal direction of a hoisting member on the back side of the hoisting member of a construction machine,
A pipe member having a shape that surrounds the work rope between the hoisting member and the pipe member;
A wire rope that is inserted into the pipe member;
and mounting portions capable of fixing both ends of the wire rope to the hoisting member ,
The wire rope has protrusions protruding from both ends of the tube member,
A guide member , the protrusion being fixed to the mounting portion . A guide member for suppressing the sway of a work rope that is stretched along the longitudinal direction of a hoisting member on the back side of the hoisting member of a construction machine,
A pipe member having a shape that surrounds the work rope between the hoisting member and the pipe member;
A wire rope that is inserted into the pipe member;
Both ends of the wire rope are fixed to the hoisting member.
Equipped with
A guide member in which the tube member, together with the wire rope, is attached to the undulating member via the attachment portion. A guide member for suppressing the sway of a work rope that is stretched along the longitudinal direction of a hoisting member on the back side of the hoisting member of a construction machine,
a cylindrical pipe member provided upright on the undulating member and having a pair of legs and a connecting portion connecting the pair of legs;
A wire rope that is inserted into the pipe member;
a mounting portion to which the pipe member is attached by fixing both ends of the wire rope;
Equipped with
a guide member through which the work rope passes within an internal space formed by the mounting portion and the tubular member attached to the mounting portion; 4. A guide member according to claim 1 , wherein the width between the two ends of the tube member is smaller than the width of the undulating member. A guide member as described in claim 4, wherein the mounting portion includes a first member extending in the width direction of the undulating member and attached to the undulating member, and a pair of second members fixing the wire rope to the first member inside both ends of the undulating member in the width direction. The guide member according to claim 1 , further comprising support portions fixed to both ends of the tubular member along a longitudinal direction of the tubular member. The guide member according to claim 6 , further comprising a connecting member that is connected across a portion of the pipe member that is fixed by the support portion and a portion of the pipe member that is not fixed by the support portion. 4. The guide member according to claim 1, wherein the bent portion of the pipe member is smoothly curved. A guide member as described in any one of claims 1 to 3, wherein the mounting portion has a first member including a mounting base extending in the width direction of the undulating member, and a second member that fixes the wire rope to the mounting base, and the pipe member is attached to the mounting base. 10. The guide member according to claim 9, wherein the pipe member has support portions at both ends arranged outside in the width direction, and the support portions are fixed to the mounting base. The present invention comprises a hoisting member, a work rope that is hung on the back side of the hoisting member along the longitudinal direction of the hoisting member, and a guide member that suppresses the swing of the work rope,
The guide member is
A pipe member having a shape that surrounds the work rope between the hoisting member and the pipe member;
A wire rope that is inserted into the pipe member;
and a mounting portion for fixing both ends of the wire rope to the hoisting member ,
A construction machine in which the pipe member is attached to the hoisting member together with the wire rope via the attachment portion . The present invention comprises a hoisting member, a work rope that is hung on the back side of the hoisting member along the longitudinal direction of the hoisting member, and a guide member that suppresses the swing of the work rope,
The guide member is
a cylindrical pipe member provided upright on the undulating member and having a pair of legs and a connecting portion connecting the pair of legs;
A wire rope that is inserted into the pipe member;
a mounting portion to which the pipe member is attached by fixing both ends of the wire rope;
Equipped with
A construction machine in which the work rope passes through an internal space formed by the mounting portion and the pipe member attached to the mounting portion.

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