JP2022146313A - Guide member and construction machine - Google Patents

Abstract

To provide a guide member that can prevent a work rope from being deflected from a track, can be easily attached to a rising/falling member, and can be prevented from broken by force of the work rope swinging largely, and a construction machine.SOLUTION: One aspect of the present invention is a guide member that suppresses deflection of a work rope stretched on a back side of a rising/falling member of a construction machine and along a longitudinal direction of the rising/falling member, and includes: a frame having a pair of column portions located on both sides of the work rope and erected on the back side of the rising/falling member; and a wire rope held by the frame and disposed inside the frame so as to straddle the work rope. Another aspect of the present invention is a construction machine comprising the rising/falling member and the guide member.SELECTED DRAWING: Figure 1

Description

The present invention relates to guide members and construction machinery.

A work rope is stretched along the longitudinal direction of the hoisting member such as a boom and a jib on the back side of a construction machine such as a crane having the hoisting member. The work rope may swing due to the movement of the work rope itself by a hoisting winch or the like and the turning of the revolving body of the construction machine.

When the swaying of the work rope becomes large, the work rope protrudes outside the hoisting member and may get caught on a connecting pin or the like of the hoisting member. Such jamming can interrupt construction work in order to return the work ropes to their normal track, and can result in damage to the undulating members and work ropes.

A guide member has been devised in which a pair of ropes are arranged between a pendant rope and a hoisting member in order to prevent the work rope from coming off the track (see Japanese Utility Model Laid-Open No. 60-137784). Since this guide member arranges the pair of ropes with slack, it is less likely to break even if a large force is applied from the work rope.

In addition, as a guide member that suppresses the work rope from coming off the track, a gate-shaped support that surrounds the work rope in a gate shape to prevent the work rope from coming off the track has been proposed. (JP-A-10-218570).

Japanese Utility Model Laid-Open No. 60-137784 JP-A-10-218570

Although the pair of ropes of the guide member of Patent Document 1 has a certain degree of rigidity, when the angle of the hoisting member becomes close to vertical, such as at the time of the minimum working radius, there is a risk that they will hang down and interfere with the working ropes. In particular, since the distance between the work rope and the hoisting member is large on the lower side of the hoisting member, the possibility of interference as described above increases.

The gate-shaped strut of the guide member of Patent Document 2 may be damaged when the work rope collides with it when the work rope swings greatly.

SUMMARY OF THE INVENTION In view of the circumstances as described above, the present invention provides a guide member capable of suppressing damage due to collision with a work rope and suppressing interference with the work rope, and a construction machine equipped with this guide member. is the subject.

One aspect of the present invention, which has been made to solve the above problems, is a guide member that suppresses swinging of a work rope that is stretched along the longitudinal direction of the hoisting member of a construction machine on the back side of the hoisting member. , a frame positioned on both sides of the work rope and having a pair of pillars erected on the dorsal side of the hoisting member; A wire rope is provided.

Another aspect of the present invention, which has been made to solve the above-described problems, is a construction machine including an undulating member and the guide member.

ADVANTAGE OF THE INVENTION The guide member which concerns on 1 aspect of this invention can suppress interference with a work rope while being able to suppress damage by the collision of a work rope.

FIG. 1 is a schematic side view showing a construction machine according to one embodiment of the invention. FIG. 2 is a schematic perspective view of the hoisting member of the construction machine of FIG. 1 as seen from the back side. 3 is a schematic perspective view showing a guide member of the construction machine of FIG. 1. FIG. 4 is a schematic perspective view of the guide member of FIG. 3. FIG. 5 is a partially enlarged view of a wire rope included in the guide member of FIG. 4. FIG. 6 is a partially enlarged view of a frame included in the guide member of FIG. 4. FIG. FIG. 7 is an A view of FIG. 4 . 8 is a schematic perspective view showing a guide member different from that in FIG. 4. FIG. FIG. 9 is a schematic perspective view showing a guide member different from FIGS. 4 and 8. FIG.

[Description of the embodiment of the present invention]
An embodiment of the present invention will be described.

One aspect of the present invention is a guide member that suppresses swinging of a work rope that is stretched along the longitudinal direction of the hoisting member of a construction machine on the back side of the hoisting member, and that is positioned on both sides of the work rope. and a frame having a pair of pillars erected on the dorsal side of the hoisting member, and a wire rope held by the frame and arranged to straddle the work rope inside the frame.

Since the guide member is arranged so that the wire rope straddles the work rope, it is possible to prevent the work rope from swaying and deviating from the track. In addition, since the wire rope is held by the frame having the pair of pillars erected by the hoisting members, it is possible to prevent the wire rope from sagging downward even if the angle of the hoisting member is nearly vertical. Interference between the rope and the work rope can be suppressed. Furthermore, when the work rope swings greatly and the guide member collides with the work rope, the wire rope collides with the work rope, and the force (impact force) due to this collision is buffered or dispersed. Since it is transmitted to the frame, damage to the frame can be suppressed.

It is preferable that the frame further includes beams connecting the ends of the pair of pillars. By doing so, the strength of the frame can be improved.

The guide member may have a configuration in which the wire rope is directly fixed to the frame, but a configuration further comprising a suspension rope arranged between the frame and the wire rope for suspending the wire rope on the frame. is preferred. In the case of a structure in which the frame is fixed directly as described above, the work rope may collide with the fixed portion, which may reduce the effect of suppressing damage to the frame. On the other hand, in the case of adopting the structure provided with the suspension rope as described above, the wire rope can be separated from the frame, so that the effect of suppressing damage to the frame can be improved.

The guide member may have a configuration in which the wire rope is fixed to the frame in a bent state, but a configuration in which both ends of the wire rope are fixed so as to apply tension to the wire rope is adopted. preferably. In the case of the structure that is fixed in a bent state as described above, when the working rope collides, the wire rope bends and there is a risk that the working rope will collide with the frame together with the wire rope. There is a possibility that the damage suppression effect will be reduced. On the other hand, when a structure that applies tension to the wire rope is employed, it is possible to prevent the work rope from colliding with the frame, thereby improving the effect of preventing damage to the frame.

It is preferable that the frame further includes a support that can be attached to the hoisting member, and the pair of pillars are fixed to the support. Further having the support table makes it easier to attach the guide member to the undulating member.

Another aspect of the present invention is a construction machine that includes a luffing member and the guide member.

Since the construction machine includes the above guide member, it is possible to prevent the work rope from coming off the track, thereby suppressing damage to the undulating member, and absorbing the force due to collision with the work rope that has swung greatly. As a result, damage or the like of the guide member can be suppressed. Therefore, efficient construction work can be performed.

In the present invention, the "dorsal side of the hoisting member" means the side on which the hoisting member is laid down, and the "ventral side of the hoisting member" means the opposite side (the side when the hoisting member is laid down). side down in the state). "Upper" means the side in a direction vertically away from the surface (ground or the like) on which the construction machine is arranged, and "lower" means the opposite side.

[Details of the embodiment of the present invention]
BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.

<Construction machinery>
A construction machine that is one aspect of the present invention will be described using a crane 1 shown in FIG. This crane 1 is an excavator that performs excavation work using a bucket. The crane 1 includes a lower traveling body 2, an upper revolving body 3 mounted on the lower traveling body 2 and capable of turning in a plane parallel to a plane (for example, the ground) on which the lower traveling body 2 travels, and an upper revolving body. and a hoisting member hoistably attached to 3 . The lower traveling body 2 has a pair of crawlers or the like as a traveling device, and can move in any direction. It should be noted that "possible to hoist" means that the operator of the crane 1 operates the hoisting member in a laid down state in which the hoisting member is substantially parallel to the running surface of the lower traveling body 2, and in a standing state in which the hoisting member is substantially perpendicular to the traveling surface. means that it can swing between

Said luffing member of crane 1 is boom 4 . The boom 4 has a rectangular tubular lattice structure with four main girders. Specifically, in the boom 4, a pair of dorsal side main girders 4a arranged on the dorsal side and a pair of ventral side main girders 4b arranged on the ventral side form corners of a rectangular tube, and the pair of dorsal side main girders 4b A plurality of complementary girders 4c are connected between main girders 4a, between a pair of ventral main girders 4b, and between adjacent dorsal and ventral main girders 4a and ventral main girders 4b, respectively.

The crane 1 includes a first hoisting winch 5 arranged on an upper revolving body 3 and a second hoisting winch extended from the first hoisting winch 5 and stretched over the back side of the boom 4 along the longitudinal direction of the boom 4 . It has a rope 6 for one work. The first work rope 6 is suspended from the tip side of the boom 4 (the side away from the upper rotating body 3), and suspends the clamshell bucket 7. As shown in FIG. Further, the crane 1 is extended from the second hoisting winch 8 arranged on the upper rotating body 3 and the second hoisting winch 8, and stretched over the back side of the boom 4 along the longitudinal direction of the boom 4. It has a second working rope 9 which is For example, an auxiliary hook (not shown) is suspended from the tip of the second work rope 9 . Further, the crane 1 includes a gantry 10 attached to the rear of the base end of the boom 4 of the upper rotating body 3 (the end on the side attached to the upper rotating body 3), and a lower part provided at the tip of the gantry 10. A spreader 11, an upper spreader 13 connected to the lower spreader 11 by a hoisting rope 12, and a guy line 14 connecting the upper spreader 13 and the tip of the boom 4 are provided. The crane 1 includes a pair of guy lines 14 arranged substantially parallel in the longitudinal direction of the boom 4 .

The crane 1 includes a guide member 20 attached to the boom 4, as shown in FIGS. Guide member 20 itself is an aspect of the present invention.

[Guide member]
The guide member 20 prevents the first work rope 6 and the second work rope 9 (hereinafter also simply referred to as "work ropes") from swinging significantly during movement in the longitudinal direction. As shown in FIG. 4, the guide member 20 is positioned on both sides of the work rope and is held by a frame 21 having a pair of pillars 21a erected on the dorsal side of the boom 4 and the frame 21. and a wire rope 22 arranged so as to straddle the work rope on the inner side of 21 . The wire rope 22 is a flexible wire rod (cord-like member), and the frame 21 is an inflexible member made of iron, aluminum, stainless steel, or the like.

The boom 4 has a lower boom member 41 on the base end side, an upper boom member 42 on the tip side, and an intermediate boom member 43 arranged between the lower boom member 41 and the upper boom member 42 . The guide member 20 is attached to the tip side of the intermediate boom member 43 . A connection pin or the like is provided at each connecting portion of the upper boom member 42 , the lower boom member 41 and the intermediate boom member 43 . By attaching the guide member 20 close to the connection portion, it is possible to prevent the work rope from being caught (entangled) by the pin or the like, which has swayed greatly.

The guide member 20 may be attached close to the connecting portion between the lower boom member 41 and the intermediate boom member 43 . Further, when the boom has a plurality of intermediate boom members, the guide member 20 may be attached close to the connection portion between the intermediate boom members. The guide member 20 may be attached in close proximity to a member such as the guy line 14 disposed on the dorsal side of the boom 4, a gantry, a member for storing the spreader, etc., on which the work rope is likely to get caught or collide. Also, a plurality of guide members may be attached to the boom 4 .

The pair of pillars 21a of the frame 21 are arranged such that their longitudinal directions are substantially perpendicular to the virtual plane formed between the pair of dorsal main girders 4a. At least a part of the wire rope 22 is held by the frame 21 and arranged between the pair of frames 21 so as to straddle the work rope. More specifically, the wire rope 22 has an arch shape so that it can straddle the work rope. Since the wire rope 22 is provided in an arch shape, the wire rope 22 may collide with the above-mentioned working rope which swings greatly. Due to this collision, the wire rope 22 is elastically deformed appropriately to absorb the force caused by the collision. Therefore, the guide member 20 is suppressed from being damaged. In addition, the "arch shape" in this description includes various shapes such as arc shape, triangular shape, rectangular shape, trapezoidal shape, polygonal shape, etc. that can straddle the work rope.

It is preferable that the frame 21 further has a beam portion 21b that connects the ends of the pair of pillars 21a. The frame 21 of this embodiment has a beam portion 21b made of the same material as the column portion 21a. The beam portion 21b may be an inflexible member made of a different material, or may be a flexible wire rod. The pair of column portion 21a and beam portion 21b may be integrally formed.

The frame 21 is attached to the dorsal main girder 4a of the boom 4 or the auxiliary girder 4c arranged between the dorsal main girder 4a. The wire rope 22 is held by the frame 21 at its substantially central portion. Both ends of the wire rope 22 are attached to the dorsal side main girder 4 a or the auxiliary girder 4 c of the boom 4 . Both ends of the wire rope 22 may be attached below the pair of pillars 21a. The frame 21 and wire rope 22 are each detachable from the boom 4 . Therefore, the guide member 20 can be easily attached.

A beam portion 21 b of the frame 21 holds the wire rope 22 . Both ends of the wire rope 22 are preferably fixed so as to apply tension to the wire rope 22 . The wire rope 22 can effectively absorb the force due to the collision with the work rope by applying tension.

Preferably, the frame 21 further has a support base 23 that can be attached to the boom 4 , and the pair of pillars 21 a are fixed to the support base 23 . By doing so, the guide member 20 can be attached to the boom 4 more easily. When attaching the wire rope 22 and the frame 21 to the dorsal side main girder 4a of the boom 4, etc., the boom 4 may need to be processed. The guide member 20 is provided with a support base 23 attached to the boom 4, and the wire rope 22 and the frame 21 are attached to the support base 23, thereby making machining of the boom 4 unnecessary or unnecessary. can also be limited to small-scale processing.

The frame 21 of this embodiment has a support base 23 for fixing the pair of pillars 21 a and the both ends of the wire rope 22 . The support base 23 is a substantially rectangular plate-like member made of iron, aluminum, stainless steel, or the like. placed so that The support base 23 may be configured to be attached to the complementary girder 4c. The support base 23 has a connecting member 24 and is fixed to the dorsal main girder 4a with this connecting member 24. As shown in FIG. The connection member 24 is, for example, a U-shaped bolt that fits over the dorsal main girder 4a. The material, shape, and fixing method of the support base 23 to the boom 4 may be selected according to the structure of the boom 4 .

The pair of pillars 21a are fixed to the support base 23 with bolts or the like so as to be detachable. By doing so, the attachment of the guide member 20 to the boom 4 can be facilitated. The pair of pillars 21a may be integrated with the support base 23 by welding or the like.

Preferably, the lower ends of the pair of pillars 21a are spaced apart from the pair of dorsal main girders 4a in the width direction of the boom 4 (the direction orthogonal to the longitudinal direction in plan view). Specifically, it is preferable that a gap 25 is provided between the lower ends of the pair of pillars 21a of the support base 23 and the dorsal main girder 4a. By doing so, the guy line 14 can be stored in the gap 25 . Specifically, the upper surface 23a of the support base 23 exposed in the gap 25 can support the guy line 14 loosened during assembly or disassembly of claim 1, and can prevent the guy line 14 from falling unintentionally.

The guide member 20 further comprises a suspension rope 26 arranged between the frame 21 and the wire rope 22 for suspending the wire rope 22 on the frame 21 . If a portion of the wire rope 22 is fixed to the frame 21, there is a risk that the force due to collision with the work rope will be transmitted to the frame 21 without being sufficiently relieved. The frame 21 and the wire rope 22 can be separated from each other by holding the wire rope 22 so that the frame 21 suspends it. Therefore, it is possible to make it difficult for the force due to the collision with the work rope to be transmitted to the frame 21 .

The suspension rope 26 is annular. Therefore, the wire rope 22 and the frame 21 can be inserted inside, and the wire rope 22 and the suspension rope 26 can be easily attached to the frame 21 . As a mounting method, for example, the frame 21 is inserted inside the suspension rope 26 and the frame 21 is fixed to the support base 23 . After that, the wire rope 22 is inserted inside the suspension rope 26, and one end of the wire rope 22 is fixed to the support base 23 by aligning the substantially central portion of the wire rope 22 with the substantially central portion of the beam portion 21b. . After that, the other end of the wire rope 22 is fixed to the support base 23 while applying tension.

As shown in FIG. 5, when the wire rope 22 is a stranded wire including a plurality of wires, the suspension rope 26 may hold one of the wires. As a mounting method in this case, for example, the frame 21 is inserted inside the suspension rope 26 that holds the wire rope 22 and the frame 21 is fixed to the support base 23 . After that, one end and the other end of the wire rope 22 are fixed to the support base 23 while applying tension.

The beam portion 21b has a pair of hooks 30 for restricting the movement of the annular suspension rope 26 in the width direction, as shown in FIG. By disposing the hanging rope 26 between the pair of hooks 30, the hanging rope 26 can be easily attached to the frame 21. - 特許庁The suspension rope 26 may be partially fixed to the frame 21 and attached.

The end of the wire rope 22 is fixed below the support base 23 as shown in FIG. The support base 23 has fixing means for fixing the wire rope 22 in a tensioned state. Specifically, the support base 23 includes a through hole (not shown) through which the wire rope 22 is inserted, and a plate-like portion extending downward from a position adjacent to the through hole for fixing the wire rope 22. 28. The support base 23 also has a fixing member 29 for sandwiching the wire rope 22 with the plate-like portion 28 and a bolt 30 fixing the fixing member 29 to the plate-like portion 28 .

The fixing member 29 is a columnar member having a substantially rectangular cross section. Through holes for inserting bolts 30 are formed at both ends of the fixing member 29 in the longitudinal direction. A groove is formed in the fixing member 29 in a direction perpendicular to the axial direction of the through holes between the two through holes. 28 and fixed.

The width of the groove is substantially the same as the diameter of the wire rope 22 . The axial thickness of the fixing member 29 is slightly smaller than the diameter of the wire rope 22 . The plate-like portion 28 has fixing through holes (not shown) corresponding to the two through holes of the fixing member 29 . One end of the wire rope 22 is placed between the fixing through-holes of the plate-like portion 28 , and the wire is inserted into the groove portion of the fixing member 29 while aligning the through-holes with the fixing through-holes. The rope 22 is fitted. After that, a bolt 30 is inserted through the through-hole and the through-hole for fixing, and this bolt 30 and a nut (not shown) prepared on the side of the plate-like portion 28 opposite to the side on which the fixing member 29 is arranged are attached. to fix the end of the wire rope 22 and the fixing member 29 . Since the axial thickness of the fixing member 29 is slightly smaller than the diameter of the wire rope 22, the wire rope 22 is firmly fixed.

The number of fixing members 29 for fixing one end of the wire rope 22 is three. That is, six at each end. The number of fixing members 29 may be two or less, or four or more, depending on the tension applied to the wire rope 22, the expected force due to collision with the work rope, and the like.

The other end of the wire rope 22 is similarly fixed. The other end of the wire rope 22 is fixed while being pulled with a necessary force so that the desired tension is applied to the wire rope 22 .

<Advantages>
The guide member 20 has a wire rope 22 arranged so as to straddle the work rope, and a frame 21 holding the wire rope 22 so as to stand by itself. Since the wire rope 22 surrounds the work rope, the guide member 20 prevents the work rope from swinging and being caught by other members such as the boom 4 and from damaging the other members. can.

The wire rope 22 absorbs part of the force caused by the collision when the work rope swings and collides. Therefore, the force due to the collision with the frame 21 is relieved, and the guide member 20 itself can be prevented from being damaged.

Since the frame 21 and the wire rope 22 are detachable from the boom 4, the guide member 20 can be easily attached.

[Other embodiments]
The above embodiments do not limit the configuration of the present invention. Therefore, in the above embodiment, the components of each part of the above embodiment can be omitted, replaced, or added based on the description of the present specification and common general technical knowledge, and all of them are interpreted as belonging to the scope of the present invention. should.

In the above embodiment, the frame 21 holds the wire rope 22 at two positions, but the number may be one or three or more.

A plurality of wire ropes 22 may be used instead of one wire rope. For example, as shown in FIG. 8, when viewed in the longitudinal direction of the boom 4, it is fixed to the frame 22 or the frame 22 and the support base 23 or the boom 4 so that two wire ropes 22a intersect, and the work rope may be positioned below the intersection of the two wire ropes 22a.

The wire rope 22 may be a single wire or a bundle of a plurality of wires.

The frame 21 may not have the beam portion 21b as shown in FIG. Specifically, a suspension rope 26 may be arranged on the upper end side of the pair of frames 21 so that the suspension rope 26 holds the wire rope 22 .

The frame 21 may be a bar-shaped member, a plate-shaped member, or a profile having an L-shaped or C-shaped cross section.

The frame 21 and the wire rope 22 need not be symmetrical in the left-right direction (width direction), and may be left-right asymmetrical.

The frame 21 and the wire rope 22 do not have to be arranged substantially vertically on the back side of the boom 4 (hoisting member), and may be arranged so as to be inclined in the longitudinal direction of the hoisting member.

The frame 21 and the wire ropes 22 do not have to be entirely arranged inside the pair of dorsal main girders 4a, and at least a part of the frame 21 and the wire ropes 22 is arranged on the pair of dorsal main girders 4a. or may be arranged outside the pair of dorsal main girders 4a.

In the above embodiment, the support stand 23 arranged so as to span the pair of dorsal main girders 4a was described, but a pair of pedestals mounted on one dorsal main girder 4a and the other dorsal main girder 4a respectively It is good also as a support stand of.

The suspension rope 26 does not have to be annular. For example, it may have a string shape with one end connected to the frame 21 and the other end connected to the wire rope 22 .

In the above embodiment, the end of the wire rope 22 is fixed with the fixing member 29 and the bolt 30, but the method of fixing the end of the wire rope 22 is not limited to this, and other known methods may be used. .

Although the crane 1 has been described in the above embodiment, it is not limited to this, and other construction machines such as luffing specifications, tower specifications, crane specifications, etc. may be used. Also, the construction machine may have other buckets in place of the clamshell bucket 7, or may have other arbitrary attachments such as hooks, hammers, magnets, and the like.

The hoisting member is not limited to the boom 4 having the intermediate boom member 43 and the like, and may be an extendable boom. The hoisting member may have a jib connected to the tip side of the boom. In this case, the guide member 20 may be attached to the boom, attached to the jib, or attached to both the boom and the jib. Also, the boom 4 may not have the lattice structure described above.

In the above embodiment, the configuration in which the first work rope 6 and the second work rope 9 pass through the inside of the guide member has been described, but the number of work ropes is not particularly limited. It can be appropriately set according to the specifications.

INDUSTRIAL APPLICABILITY The guide member of the present invention is suitable for construction machinery because it can prevent the work rope from coming off the track.

1 Crane 2 Undercarriage 3 Upper Revolving Structure 4 Boom 4a Dorsal Main Girder 4b Ventral Main Girder 4c Complementary Girder 5 First Hoisting Winch 6 First Working Rope 7 Clamshell Bucket 8 Second Hoisting Winch 9 Second Work Rope 10 Gantry 11 Lower Spreader 12 Luffing Rope 13 Upper Spreader 14 Guy Line 20 Guide Member 21 Frame 21a Column 21b Beam 22, 22a Wire Rope 23 Support Base 23a Upper Surface of Support Base 24 Connection Member 25 Gap 26 Hanging Rope 27 hook 28 fixed part 29 plate 30 bolt 41 lower boom member 42 upper boom member 43 middle boom member

Claims (6)

A guide member that suppresses swinging of a work rope that is stretched over the back side of a hoisting member of a construction machine along the longitudinal direction of the hoisting member,
a frame having a pair of pillars located on both sides of the work rope and erected on the dorsal side of the hoisting member;
a wire rope held by the frame and arranged to straddle the work rope inside the frame. 2. The guide member according to claim 1, wherein the frame further has beams connecting the ends of the pair of pillars. 3. The guide member according to claim 1, further comprising a suspension rope disposed between said frame and said wire rope for suspending said wire rope on said frame. 4. The guide member according to claim 1, 2 or 3, wherein both ends of said wire rope are fixed so as to apply tension to said wire rope. The frame further has a support base that can be attached to the hoisting member,
5. The guide member according to any one of claims 1 to 4, wherein the pair of pillars are fixed to the support base. A construction machine comprising an undulating member and the guide member according to any one of claims 1 to 5.

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