JP7010085B2 - Construction machinery - Google Patents

Description

The present invention relates to a construction machine in which a counterweight is attached to the rear part of a swivel frame.

When transporting a large construction machine, it is necessary to remove the crawler from the construction machine due to restrictions on weight, width, height, etc. Therefore, a configuration has been proposed in which the machine body is jacked up by a jack-up device attached to the main boom and a jack-up device attached to the rear part of the upper swing body (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2014-240574

However, the above-mentioned rear jack-up device uses the counterweight mounting bolt hole of the swivel frame, and it is necessary to remove the counterweight when mounting the jack-up device. In addition, when installing the jack-up device, the bolts and mounting holes are aligned while the jack-up device is suspended by a crane, but it is difficult to align the bolts while the jack-up device is suspended, and the number of bolts is also large. There was a problem that many tightening was complicated.

Therefore, an object of the present invention is to provide a construction machine capable of improving work efficiency when mounting a jack-up device.

In order to achieve the above object, the present invention comprises a traveling body and a swivel body frame rotatably mounted on the traveling body, and a jack-up device is attached to the rear portion of the swivel body frame. A jack-up device mounting bracket is provided, and the jack-up device mounting bracket has a mounting surface to the swivel frame and a surface opposite to the mounting surface, and the mounting surface has the jack. Provided is a construction machine provided with a mounting member for mounting the up device mounting bracket to the swivel frame, and a jack-up device mounting portion for mounting the jack-up device on the opposite surface. ..

Here, the rear portion of the swivel frame is configured as a counterweight mounting portion, a counterweight is provided on the upper surface of the counterweight mounting portion, and the jack-up is provided on the lower surface of the counterweight mounting portion. It is preferable that the device mounting bracket is provided, and both the counterweight and the jack-up device mounting bracket are attached to the counterweight mounting portion by a counterweight mounting bolt.

Further, as the mounting member, it is preferable that a pair of hooking members hooked on the rear portion of the swivel frame are provided on both sides of the jack-up device mounting bracket in the machine width direction.

Further, it is preferable that the pair of hooking members are bolted to holes provided in the bracket body so that the positions in the machine width direction can be adjusted.

Further, it is preferable that the lower surface of the jack-up device mounting bracket is provided with a notch guide portion for mounting the jack-up device and a fixing pin hole.

Further, the bracket main body of the jack-up device mounting bracket has a pair of convex-shaped portions protruding on both sides in the machine width direction, and the pair of hooking members are provided on the pair of convex-shaped portions. It is preferable that the pair of convex portions are further provided with a pair of suspension portions for suspending the pair of hooking members when they are hooked on the counterweight mounting portion.

Further, in the jack-up device mounting bracket, it is preferable that the frame-side plate mounted on the swivel frame and the jack-side plate on which the jack-up device mounting portion is provided are separable.

According to the construction machine according to claim 1, the jack-up device mounting bracket is pre-mounted on the swivel frame. Therefore, when the jack-up device is attached to the construction machine, the jack-up device may be attached to the jack-up device mounting bracket, and the work efficiency is good.

According to the construction machine according to claim 2, since the jack-up device mounting bracket is attached to the swivel body frame by the counter weight mounting bolt, the jack-up device mounting bracket can be firmly fixed.

According to the construction machine according to claim 3, the jack-up device mounting bracket and the counter weight are mounted on the swivel frame with the jack-up device mounting bracket hooked on the rear portion of the swivel frame by the hooking member. It is easy to work because it is fastened with bolts.

According to the construction machine according to claim 4, when the dimensional tolerances overlap due to the influence of the can manufacturing strain of the structure and there is an individual difference in the width of the overhanging portion of the swivel frame and the jack-up device mounting bracket, the hook is hooked. The position of the member in the machine width direction can be adjusted.

According to the construction machine according to claim 5, first, the hooking pin of the jack-up device is hooked on the notch guide portion, and then the positions of the fixing pin hole of the jack-up device and the fixing pin hole of the jack-up device mounting bracket. Align and insert the fixing pin. Therefore, the alignment work can be easily performed. Further, since the other pin (fixing pin) can be inserted into the fixing pin hole in a state where one pin (hooking pin) is hooked on the notch guide portion, the work can be performed safely. Further, the number of fixing pins to be inserted and removed for attaching and detaching the jack-up device can be reduced as compared with the case where a normal pin hole is provided instead of the notch guide portion.

According to the construction machine according to claim 6, the bracket main body of the jack-up device mounting bracket has a pair of convex portions protruding on both sides in the machine width direction. It is necessary to hang it with a crane when mounting the jack-up device mounting bracket to the swivel frame (counterweight mounting part), but since only the minimum required part is projected, there is little hindrance in the hanging work.

According to the construction machine according to claim 7, since the frame side plate attached to the swivel frame and the jack side plate provided with the jack-up device mounting portion are configured to be separable, the jack-up device mounting portion is provided. Even if it is damaged, only the jack side plate can be repaired or replaced, and maintenance is high.

The schematic side view which shows the construction machine by embodiment of this invention. A perspective view of the swivel frame viewed diagonally from the rear. The perspective view which shows the upper surface of the jack-up device mounting bracket. The perspective view which shows the lower surface of the jack-up device mounting bracket. The perspective view which shows the jack-up device mounting bracket which removed the hook member and the suspension ring. Rear view of the construction machine before installing the jack-up device (only the main parts are shown). The perspective view which shows the jack-up device. The figure which shows the mounting process of a jack-up device (the 1). The figure which shows the mounting process of a jack-up device (the 2). The figure which shows the mounting process of a jack-up device (the 3). Rear view of the construction machine with the jack-up device attached (only the main parts are shown). Schematic view of the split type jack-up device mounting bracket according to the first modification as seen from the rear surface. Top view of the frame side plate of the jack-up device mounting bracket of FIG. The bottom view, the rear view and the side view of the jack side plate of the jack-up device mounting bracket of FIG. Schematic view of the split type jack-up device mounting bracket according to the second modification as seen from the rear surface. The bottom view of the jack side plate of FIG. Schematic view of the split type jack-up device mounting bracket according to the third modification as seen from the rear surface. The bottom view of the jack side plate of the jack-up device mounting bracket of FIG.

The construction machine 1 according to the embodiment of the present invention will be described with reference to FIGS. 1 to 11.

As shown in FIG. 1, the construction machine 1 includes a crawler type lower traveling body 2 and an upper turning body 3. As shown in FIG. 1, the lower traveling body 2 (an example of the traveling body) is arranged below the upper turning body 3, and includes a car body (not shown), a crawler 21, and the like.

The upper swivel body 3 is mounted on the lower traveling body 2 and can swivel around a vertical axis. The upper swivel body 3 has a driver's cab 31, a machine room 32, and the like mounted on a frame 4 (an example of the swivel body frame 4).

A boom 33 that can be raised and lowered is mounted on the front portion of the upper swivel body 3 (the front portion of the frame 4). A counterweight 34 for balancing the weight with the work attachment including the boom 33 is provided at the rear portion of the upper swing body 3 (rear portion of the frame 4).

FIG. 2 shows the rear part of the frame 4. As shown in FIG. 2, the frame 4 includes a bottom plate 42, left and right vertical plates 43 standing on the bottom plate 42 and forming a skeleton of the frame 4, and an upper plate 44 provided on the vertical plate 43. The portion of the bottom plate 42 that projects outward from the left and right vertical plates 43 in the machine width direction is configured as an overhanging portion 45 described later. Although not shown in FIG. 2, a swivel bearing is attached to the bottom plate 42 in the middle of the frame 4. Further, a boom 33 is mounted between the left and right vertical plates 43 at the front of the frame 4.

The rear portion of the frame 4 is configured as a counterweight mounting portion 41, and a counterweight 34 is provided on the upper surface of the counterweight mounting portion 41 (FIG. 1). The counterweight mounting portion 41 is formed with a plurality of mounting holes 41h (FIG. 2) for mounting the counterweight 34 so as to penetrate in the vertical direction.

On the other hand, a jack-up device mounting bracket 5 is provided on the lower surface of the counterweight mounting portion 41 (FIG. 1).

Both the counterweight 34 and the jack-up device mounting bracket 5 are attached to the counterweight mounting portion 41 by the counterweight mounting bolt 35 (FIG. 6). Details will be described later.

Hereinafter, the jack-up device mounting bracket 5 (hereinafter, simply referred to as “mounting bracket 5”) will be described in detail.

As shown in FIGS. 3 and 4, the mounting bracket 5 has a plate-shaped bracket main body 51. The bracket body 51 has a pair of triangular end portions 51E (an example of a convex shape portion) protruding on both sides in the machine width direction. The bracket main body 51 is formed with a plurality of (four in this embodiment) mounting holes 51h through which the counterweight mounting bolts 35 are inserted so as to penetrate in the vertical direction.

A pair of hooking members 52 (an example of mounting members) to be hooked on the overhanging portion 45 of the counterweight mounting portion 41 are provided on the upper surface 51U (more specifically, the upper surface of the triangular end portion 51E) of the bracket main body 51. There is. A gap 52a is formed between the hook member 52 and the upper surface 51U of the bracket main body 51. The upper surface 51U is an example of a mounting surface for the swivel frame.

As shown in FIG. 5, the bracket main body 51 is formed with a plurality of hooking member holes 51a for mounting the hooking member 52. The hooking member hole 51a is formed as an elongated hole long in the machine width direction. The hooking member 52 is attached to the hooking member hole 51a with a bolt, and is fixed in a state where the position in the machine width direction is adjusted.

Further, a pair of suspension rings 53 (an example of the suspension portion) are further provided on the upper surface 51U (more specifically, the upper surface of the triangular end portion 51E) of the bracket main body 51. The suspension ring 53 is a member for suspending the mounting bracket 5 with a crane when the hooking member 52 is hooked on the counterweight mounting portion 41. The suspension ring 53 is provided outside the hook member 52 in the machine width direction and near the tip of the triangular end portion 51E.

On the other hand, a pair of jack-up device mounting portions 55 are provided on the lower surface 51L of the bracket main body 51 and inside the mounting hole 51h in the machine width direction. Each jack-up device mounting portion 55 is a vertical plate-shaped member that extends in the front-rear direction and whose upper end is fixed to the lower surface 51L of the bracket main body 51. The lower surface 51L is an example of a surface opposite to the mounting surface.

The jack-up device mounting portion 55 is formed with a notch guide portion 56 and a fixing pin hole 57 for mounting the jack-up device 9 (FIG. 7) described later. In this embodiment, the notch guide portion 56 is on the rear side and the fixing pin hole 57 is on the front side. The notch guide portion 56 is formed as a notch open to the rear. The fixing pin hole 57 is formed as a through hole.

A protective cover 59 (FIG. 4) for protecting the counterweight mounting bolt 35 is provided around the lower surface 51L of the bracket main body 51 and each mounting hole 51h.

A procedure for assembling the counterweight 34 and the mounting bracket 5 to the frame 4 at the time of assembling the construction machine 1 will be described.

First, the mounting bracket 5 is suspended by a crane, and the mounting bracket 5 is slid forward while the left and right hooking members 52 are hooked (mounted) on the overhanging portion 45 of the frame 4, and the mounting holes for the mounting bracket 5 are used. The mounting bracket 5 is moved to a position where 51h matches the mounting hole 41h of the frame 4 (counterweight mounting portion 41). At this time, the overhanging portion 45 is in the gap 52a between the hooking member 52 and the upper surface 51U of the bracket main body 51.

Next, the counterweight 34 is suspended by a crane and placed on the counterweight mounting portion 41.

Finally, the counterweight mounting bolt 35 (FIG. 6) is attached from below to the mounting hole 51h of the mounting bracket 5, the mounting hole 41h of the frame 4 (counterweight mounting portion 41), and the mounting hole of the counterweight 34 (not shown). ), And fasten. As a result, the mounting bracket 5 and the counterweight 34 are fastened together with respect to the frame 4.

FIG. 6 shows a state (rear view) in which the counterweight 34 and the mounting bracket 5 are assembled to the frame 4. Note that FIG. 6 shows only the counterweight 34 and the mounting bracket 5, and the crawler 21 and the like are omitted.

Next, the jack-up device 9 will be briefly described with reference to FIG. 7. The jack-up device 9 is also called a trans lifter. The jack-up device 9 includes a jack main body 90, a pair of jack cylinders 91, and a pair of bracket mounting portions 92.

The jack cylinder 91 is configured as a so-called hydraulic jack. The jack cylinder 91 is attached to a rotating portion 98 that is rotatably configured with respect to the jack body 90. The rotating portion 98 is provided with a hanging hole 99 for hanging with a crane.

Each bracket mounting portion 92 is composed of two vertical plates, and a hooking pin 93 and a fixing pin 94 are inserted into pin holes formed in the two vertical plates. The hooking pin 93 and the fixing pin 94 are prevented from coming off by fasteners 95 and 96, respectively.

Next, the mounting process of the jack-up device 9 will be described with reference to FIGS. 8 to 10.

First, the jack-up device 9 is connected to the crane using the suspension plate 80 and placed behind the construction machine 1 (FIG. 8).

Next, the jack-up device 9 is lifted and positioned under the mounting bracket 5, and the hooking pin 93 (rear pin) is inserted into the notch guide portion 56 of the mounting bracket 5 in a state of being tilted slightly forward. And hook it (Fig. 9).

Then, the holes of the fixing pins 94 (front pins) of the jack-up device 9 and the fixing pin holes 57 of the mounting bracket 5 are aligned and fixed with the fixing pins 94 (FIG. 10).

With the above procedure, the jack-up device 9 is mounted on the construction machine 1 (more specifically, the mounting bracket 5). FIG. 11 shows a state (rear view) in which the jack-up device 9 is mounted on the construction machine 1.

According to the construction machine 1 according to the above-described embodiment, the counterweight 34 and the mounting bracket 5 are pre-mounted on the frame 4. Therefore, when the jack-up device 9 is attached to the construction machine 1, it is not necessary to remove the counterweight 34, and the jack-up device 9 may be attached to the attachment bracket 5, so that the work efficiency is good.

Further, since the mounting bracket 5 is attached to the frame 4 by the counterweight mounting bolt 35, the mounting bracket 5 can be firmly fixed.

Further, according to the construction machine 1, the counterweight 34 is mounted on the counterweight mounting portion 41 in a state where the mounting bracket 5 is hooked on the counterweight mounting portion 41 by the hooking member 52, and the mounting bracket 5 and the counterweight 34 are combined. Is fastened with a bolt 35, so that the work is easy. If there is no hooking member 52, when the mounting bracket 5 and the counterweight 34 are fastened with the bolt 35, it is necessary to hold the mounting bracket 5 on the lower surface of the counterweight mounting portion 41 by some method. Becomes difficult.

Further, according to the construction machine 1, when the dimensional tolerances overlap due to the influence of the can manufacturing strain of the structure and there are individual differences in the widths of the overhanging portion 45 of the frame 4 and the mounting bracket 5, the machine of the hooking member 52 The position in the width direction can be adjusted.

Further, when mounting the jack-up device 9 on the construction machine 1, first, the hooking pin 93 of the jack-up device 9 is hooked on the notch guide portion 56, and then the fixing pin 94 of the jack-up device 9 is mounted. Align the hole with the fixing pin hole 57 of the mounting bracket 5 and insert the fixing pin 94. Therefore, the alignment work can be easily performed. Further, the other pin (fixing pin 94) can be inserted into the fixing pin hole 57 with one pin (hooking pin 93) hooked on the notch guide portion 56, so that the work can be performed safely. Can be done.

Further, as compared with the case where a normal pin hole is provided instead of the notch guide portion 56, the number of fixing pins to be inserted and removed for attaching and detaching the jack-up device 9 is reduced, so that the labor of work can be reduced. That is, if a pin hole similar to the fixing pin hole 57 is provided at the position of the notch guide portion 56 in FIG. 4, the number of fixing pins to be inserted and removed is four, but in the present embodiment, the fixing pin to be inserted and removed is provided. The number of pins is 2 (fixing pin 94).

Further, the bracket main body 51 of the mounting bracket 5 has a pair of triangular end portions 51E (an example of a convex shape portion) protruding on both sides in the machine width direction. When the mounting bracket 5 is mounted on the counterweight mounting portion 41, it is necessary to hang it with a crane, but since only the minimum necessary portion is projected, there is little hindrance in the hanging work.

The construction machine according to the present invention is not limited to the above-described embodiment, and various modifications and improvements can be made within the scope described in the claims.

For example, in the above-described embodiment, as an example of the mounting member, a pair of hooking members 52 are provided on the upper surface 51U of the bracket main body 51, but the present invention is not limited to this. For example, the counterweight mounting bolt 35 may be used as the mounting member, or another bolt other than the counterweight mounting bolt 35 may be set as the mounting member.

Further, in the above-described embodiment, the notch guide portion 56 and the fixing pin hole 57 are provided in the mounting bracket 5, but the notch guide portion 56 is also provided with the same pin hole as the fixing pin hole 57. You may.

Further, in the above-described embodiment, the notch guide portion 56 is on the rear side and the fixing pin hole 57 is on the front side, but the present invention is not limited to this. For example, the notch guide portion may be on the front side and open forward.

Further, in the above-described embodiment, the hooking member hole 51a of the bracket main body 51 is formed as a long hole long in the machine width direction, but the hooking member 52 may be formed with a long hole.

Next, the split type jack-up device mounting bracket 105 according to the first modification will be described with reference to FIGS. 12 to 14.

In the above-described embodiment, the jack-up device mounting portion 55 is integrally provided with the bracket main body 51 mounted on the swivel body frame 4 (counterweight mounting portion 41). In this modification, the frame-side plate 150 attached to the swivel frame 4 and the jack-side plate 160 provided with the jack-up device mounting portion 55 are separably provided.

Specifically, as shown in FIG. 13, the frame side plate 150 is formed with a mounting hole 151h into which a counterweight mounting bolt 35 is inserted and a mounting notch 151c penetrating in the vertical direction. .. Further, the upper surface 150U of the frame side plate 150 is provided with a hooking member 152 similar to the hooking member 52 described above.

Further, as shown in FIG. 14, a jack-up device mounting portion 55 is provided on the lower surface 160L of the jack-side plate 160. The jack-side plate 160 can be attached to or detached from the frame-side plate 150 by means of bolts 162.

Since the frame side plate 150 is attached to the swivel body frame 4 by the counterweight mounting bolt 35, it takes a relatively long time to remove it. On the other hand, the jack side plate 160 can be easily removed from the frame side plate 150. Therefore, even if the jack-up device mounting portion 55, which is a member protruding downward, is damaged, only the jack-side plate 160 can be repaired or replaced, and the maintainability is high.

When attaching the split type jack-up device mounting bracket 105 to the swivel body frame 4, the frame side plate 150 and the jack side plate 160 may be assembled and then mounted on the swivel body frame 4, or the frame side may be attached first. Only the plate 150 may be attached to the swivel frame 4, and then the jack side plate 160 may be attached to the frame side plate 150. The order of mounting can be changed as appropriate.

Next, the split type jack-up device mounting bracket 105A according to the second modification will be described with reference to FIGS. 15 and 16.

In the split-type jack-up device mounting bracket 105A of the second modification, the suspension attachment 170 is added to the split-type jack-up device mounting bracket 105 of the first modification. As shown in FIGS. 15 and 16, the suspension attachment 170 is attached to the left and right sides of the lower surface 160L of the jack side plate 160 with bolts. In FIG. 16, the jack-up device mounting portion 55 is not shown.

Each suspension attachment 170 is provided with a suspension portion 175 for suspending by a crane. As a result, the crane can be used to suspend the split type jack-up device mounting bracket 105A when it is attached to or detached from the swivel frame 4.

Next, the split type jack-up device mounting bracket 205 according to the third modification will be described with reference to FIGS. 17 and 18. In the split type jack-up device mounting bracket 205 of the third modification, the hanging attachment 170 of the second modification is integrally provided with respect to the jack side plate.

As shown in FIGS. 17 and 18, the jack-side plate 260 includes a jack-side plate main body 261 provided with a jack-up device mounting portion 55 and a suspension protruding portion 265 extending from both left and right sides of the jack-side plate main body 261. Have. The suspension portion 265 is provided with a suspension portion 175 similar to that of the second modification. According to the third modification, since the suspension protrusion 265 is integrally provided on the jack side plate main body 261, the configuration is simplified.

1 Construction machinery, 2 Lower traveling body, 3 Upper swivel body, 4 Swinging body frame,
5 Jack-up device mounting bracket, 9 Jack-up device,
21 crawlers, 31 cabs, 32 machine rooms, 33 booms,
34 counterweight, 35 counterweight mounting bolt,
41 Counterweight mounting part, 41h mounting hole,
42 bottom plate, 43 vertical plate, 44 top plate, 45 overhanging part,
51 bracket body, 51E triangular end,
51U upper surface, 51L lower surface,
51a hooking member hole, 51h mounting hole,
52 Hook member, 52a Gap, 53 Suspended ring,
55 Jack-up device mounting part, 56 Guide part,
57 fixing pin holes, 59 protective covers, 80 hanging plates,
90 jack body, 91 jack cylinder,
92 Bracket mounting part, 93 Hooking pin, 94 Fixing pin,
95,96 Stopper, 98 Rotating part, 99 Suspended hole,
105, 105A, 205 Split type jack-up device mounting bracket,
150 frame side plate, 150U top surface,
151c mounting notch, 151h mounting hole, 152 hooking member,
160 jack side plate, 160L bottom surface, 162 bolts,
170 Suspension Attachment, 175 Suspension,
260 jack side plate, 261 jack side plate body,
265 Suspended protrusion.

Claims (8)

With the running body,
It is equipped with a swivel frame that is mounted so that it can swivel with respect to the traveling body.
A jack-up device mounting bracket for mounting the jack-up device is provided at the rear of the swivel frame.
The jack-up device mounting bracket has a mounting surface for the swivel frame and a surface opposite to the mounting surface.
The mounting surface is provided with a mounting member for mounting the jack-up device mounting bracket to the swivel frame.
A construction machine characterized in that a jack-up device mounting portion for mounting the jack-up device is provided on the opposite surface. The rear portion of the swivel frame is configured as a counterweight mounting portion.
A counterweight is provided on the upper surface of the counterweight mounting portion.
The jack-up device mounting bracket is provided on the lower surface of the counterweight mounting portion.
The construction machine according to claim 1, wherein the counterweight and the jack-up device mounting bracket are both attached to the counterweight mounting portion by a counterweight mounting bolt. The construction machine according to claim 2 , wherein as the mounting member, a pair of hooking members hooked on the rear portion of the swivel frame are provided on both sides of the jack-up device mounting bracket in the machine width direction. .. The construction machine according to claim 3, wherein the pair of hooking members are bolted to a hole provided in the bracket body so that the position in the machine width direction can be adjusted. The construction according to any one of claims 1 to 4, wherein the lower surface of the jack-up device mounting bracket is provided with a notch guide portion for mounting the jack-up device and a fixing pin hole. machine. The bracket body of the jack-up device mounting bracket has a pair of convex portions protruding on both sides in the machine width direction.
The pair of hooking members are provided on the pair of convex shaped portions.
The construction according to claim 3 , further comprising a pair of hanging portions for suspending the pair of hooking members when hooking the pair of hooking members to the counterweight mounting portion. machine. The first aspect of the jack-up device mounting bracket is characterized in that the frame-side plate mounted on the swivel frame and the jack-side plate provided with the jack-up device mounting portion are configured to be separable. The construction machine according to any one of 6. The construction machine according to claim 1, wherein as the mounting member, a pair of hooking members hooked on the rear portion of the swivel frame are provided on both sides of the jack-up device mounting bracket in the machine width direction. ..

Images