JP2022156247A - Excavator - Google Patents

Abstract

To provide an excavator capable of mounting work tools.SOLUTION: The excavator includes: an undercarriage; an upper revolving body capable of revolving with respect to the undercarriage; and an attachment attached to the upper revolving body. The upper revolving body has a mounting part to which a work tool can be attached on the front of the swivel frame to which the attachment is attached.SELECTED DRAWING: Figure 5

Description

The present disclosure relates to excavators.

For example, a shovel has been disclosed that has a lower traveling body, an upper rotating body, a cab, a boom, an arm, and a bucket (see Patent Document 1). The shovel is equipped with a tool box in which working tools and working machines can be stored.

JP 2016-132975 A

By the way, when servicing an excavator, working tools such as a grease gun for injecting grease into the movable parts of the excavator and a scoop for removing dirt and the like adhering to the undercarriage are used. However, shovels have limited space to accommodate work implements.

Therefore, in view of the above problems, it is an object of the present invention to provide a shovel on which a work implement can be mounted.

In order to achieve the above object, in one embodiment of the present invention, an undercarriage, an upper revolving body capable of turning with respect to the undercarriage, and an attachment attached to the upper revolving body, wherein the upper A shovel is provided in which the revolving body has a mounting portion to which a work implement can be mounted on the front surface of a revolving frame to which the attachment is mounted.

According to the embodiment described above, it is possible to provide a shovel on which a work implement can be mounted.

It is a figure explaining the excavator concerning this embodiment. It is the perspective view which looked at the excavator which concerns on this embodiment from the front right side. FIG. 4 is a cross-sectional view showing an attachment structure between an upper rotating body and a boom; 1 is a perspective view of a swing frame of an excavator having a mounting portion of the first embodiment; FIG. FIG. 10 is a perspective view of a revolving frame when a shovel is mounted on the shovel having the mounting portion of the first embodiment; FIG. 10 is a perspective view of the revolving frame when the grease gun is mounted on the excavator having the mounting portion of the first embodiment; FIG. 10 is a perspective view of a shovel pivot frame having a mounting portion of a second embodiment; FIG. 11 is a perspective view of a revolving frame when a scoop is mounted on the shovel having the mounting portion of the second embodiment; FIG. 11 is a perspective view of a swing frame of an excavator having a mounting portion according to a third embodiment;

<Third Embodiment>
Next, the excavator having the mounting portion of the third embodiment will be further described with reference to FIG. FIG. 9 is a perspective view of a revolving frame 2a of the shovel having the mounting portion of the third embodiment.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments for carrying out the invention will be described with reference to the drawings.

An outline of the excavator according to the present embodiment will be described with reference to FIG. FIG. 1 is a diagram illustrating a shovel according to this embodiment. FIG. 1(a) is a right side view of the shovel, and FIG. 1(b) is a plan view of the upper revolving body. In addition, in FIG.1(b), it is illustrated in the state which the boom 4 was removed. Also, the direction in which the boom 4 is attached when viewed from the center of the upper rotating body 2 is defined as the front, and the opposite side is defined as the rear. Further, when looking forward at the center of the upper revolving body 2, the left hand side is defined as the left side, and the right hand side is defined as the right side.

The excavator has a lower traveling body 1, an upper rotating body 2, a cab 3, a boom 4, an arm 5 and a bucket 6. The upper rotating body 2 is mounted on the lower traveling body 1 via a rotating mechanism (not shown). A cab 3 having a driver's seat provided therein is arranged on the front left portion of the upper revolving body 2 . One end of a boom 4 is rotatably attached to the front center of the upper rotating body 2 . Arm 5 is rotatably attached to the tip of boom 4 . A bucket 6 as an end attachment is rotatably attached to the tip of the arm 5 . An end attachment such as a breaker or a crusher may be attached to the tip of the arm 5 instead of the bucket 6 which is an excavation attachment. The boom 4, arm 5, and bucket 6 constitute attachments.

The excavator also has a boom cylinder 7, an arm cylinder 8, and a bucket cylinder 9 as hydraulic actuators that drive the attachments. A boom cylinder 7 drives the boom 4 . One end of the boom cylinder 7 is rotatably attached to the front center of the upper rotating body 2 . The other end of boom cylinder 7 is rotatably attached to boom 4 . Arm cylinder 8 drives arm 5 . One end of the arm cylinder 8 is rotatably attached to the boom 4 . The other end of arm cylinder 8 is rotatably attached to arm 5 . Bucket cylinder 9 drives bucket 6 . One end of the bucket cylinder 9 is rotatably attached to the arm 5 . The other end of the bucket cylinder 9 is rotatably attached to the bucket 6 .

An engine room 20 is formed behind the upper swing body 2, and an engine (not shown) is arranged in the engine room 20. As shown in FIG. The engine room 20 is covered with an engine hood 30. - 特許庁The engine hood 30 is rotatably supported by a hinge 30a. Therefore, the engine hood 30 can be opened by gripping and lifting the handle 30b attached to the opposite side of the hinge 30a. That is, the engine hood 30 can be opened when inspecting/maintaining components such as the engine and the exhaust gas treatment device installed in the engine room 20 .

A fuel tank 21 for storing fuel to be supplied to the engine is arranged on the right front side of the engine room 20 .

A top cover 38 is provided in the front center of the engine room 20 . As described above, when the operator opens the engine hood 30 for inspection and maintenance, the operator can stand on the top cover 38 to perform the work.

A treating agent tank (not shown) in which a treating agent (for example, urea water) for treating engine exhaust gas is stored is arranged in front of the fuel tank 21 . The processing agent tank is covered with a processing agent tank cover 40 . The upper surface of the processing agent tank cover 40 is partially lowered and provided with a step. This step forms a staircase used by workers to climb the upper revolving structure 2 . A side door 41 that can be opened and closed is provided on the right side of the processing agent tank cover 40 .

In front of the processing agent tank cover 40, a tool box 22 for storing working tools and working machines is arranged. The upper surface of the tool box 22 is also used as part of the stairs used by the worker to climb onto the upper revolving body 2. - 特許庁If the processing agent tank and the processing agent tank cover 40 are not arranged in front of the fuel tank 21, a step may be provided on the upper surface of the fuel tank 21, and the tool box 22 may be arranged in front of the fuel tank 21. .

The components that make up the above-described upper revolving body 2 are mounted on the revolving frame 2a. In front of the portion where the tool box 22 is mounted, a step 23 is provided as a footrest used as part of the stairs used by the worker to climb the upper revolving body 2. - 特許庁The step 23 is attached to the slanted side of the swing frame 2a in front of the part where the tool box 22 is mounted.

As described above, the steps 23 , the upper surface of the tool box 22 , the upper surface of the processing agent tank cover 40 , and the upper surface of the fuel tank 21 form a stairway used by the operator to climb the upper revolving body 2 . A handrail unit 50 is attached in the vicinity of the stairs thus formed. The handrail unit 50 is arranged on the front right side of the upper revolving body 2 opposite to the cab 3 arranged on the front left side. A web plate 26 that supports the boom 4 in a pivotable manner is fixed to the center of the front portion of the upper swing body 2 . Therefore, the steps described above are formed between the web plate 26 and the handrail unit 50 .

Next, the upper revolving body 2 will be further described. FIG. 2 is a perspective view of the excavator according to the present embodiment as seen from the front right side.

The revolving frame 2 a has a base frame 25 , a web plate 26 , a support portion 27 and a front plate 28 .

The base frame 25 is a horizontally arranged frame.

The web plates 26 are a pair of plate members extending in the front-rear direction and erected on the base frame 25 . Note that the cab 3 is arranged on the left side of the pair of web plates 26 . Further, on the right side of the pair of web plates 26, the fuel tank 21, the processing agent tank (processing agent tank cover 40), and the tool box 22 are arranged.

The web plate 26 has a boom bearing portion 26a (see later-described FIG. 4) that supports the boom foot pin 4a of the boom 4. As shown in FIG. The boom 4 is rotatably attached by a pair of boom bearings 26 a provided on the pair of web plates 26 . The web plate 26 also has a boom cylinder bearing portion 26b (see FIG. 4 described later) that supports one of the boom cylinder foot pins 7a of the boom cylinder 7. As shown in FIG.

The support portion 27 is arranged between the pair of web plates 26 and erected on the base frame 25 . The support portion 27 is a member having a boom cylinder bearing portion 27b (see later-described FIG. 4) that supports the other of the boom cylinder foot pins 7a of the boom cylinder 7. As shown in FIG. The boom cylinder 7 is rotatably mounted by the boom cylinder bearing portion 26b of the web plate 26 and the boom cylinder bearing portion 27b of the support portion 27. As shown in FIG.

The front plate 28 is provided between the pair of web plates 26 and is a member that closes the space between the pair of web plates 26 on the front side. The front plate 28 is inclined so that the rear side is higher and the front side is lower when viewed from the side. The front plate 28 is formed so that the boom bearing portion 26a and the boom cylinder bearing portions 26b and 27b are on the outside. The lower part of the front plate 28 has an opening 28a. A hose for supplying hydraulic pressure to the boom cylinder 7, the arm cylinder 8 and the bucket cylinder 9 passes from a control valve (not shown) in the upper rotating body 2 through an opening 28a to the boom cylinder 7, the arm cylinder 8 and the bucket cylinder. routed to 9.

FIG. 3 is a cross-sectional view showing a mounting structure between the upper rotating body 2 and the boom 4. As shown in FIG. 3(a) shows a state in which the boom 4 is raised, and FIG. 3(b) shows a state in which the boom 4 is lowered. FIG. 3(b) shows the positional relationship between the boom 4 and the front plate 28 when the boom cylinder 7 is most contracted.

The top of the boom cylinder 7 is rotatably connected to the side surface of the boom 4 near the center in the longitudinal direction. Therefore, even when the boom cylinder 7 is most contracted, as shown in FIG. It has an inaccessible space. The excavator according to the present embodiment has a mounting portion to which a work implement can be mounted in this space. Thereby, the excavator according to the present embodiment can be loaded with a work tool.

An example of a mounting portion to which a working tool can be attached will be described with reference to FIGS. 4 to 9. FIG.

First, the excavator having the mounting portion of the first embodiment will be further described with reference to FIGS. 4 to 6. FIG. FIG. 4 is a perspective view of the excavator swing frame 2a having the mounting portion of the first embodiment. FIG. 5 is a perspective view of the revolving frame 2a when the shovel 200 is mounted on the shovel having the mounting portion of the first embodiment. FIG. 6 is a perspective view of the revolving frame 2a when the grease gun 210 is mounted on the excavator having the mounting portion of the first embodiment.

The shovel having the mounting portion of the first embodiment has a U-shaped seat (fixed portion) 61 and an opening/closing member 100 as the mounting portion for mounting the work implement.

The U-shaped seat 61 is fixed to the front plate 28 . Specifically, the U-shaped seat 61 is a U-shaped member and is fixed (welded) to the front plate 28 at both ends. The U-shaped seat 61 and the front plate 28 form an annular shape. Also, the U-shaped seat 61 is fixed in such a direction that the welded portion with the front plate 28 is arranged laterally. Thereby, the annular shape of the U-shaped seat 61 and the front plate 28 is arranged so as to open in the vertical direction.

The opening/closing member 100 is a member that is attached to the U-shaped seat 61 and can be opened and closed. In addition, the opening/closing member 100 can easily attach and detach a working tool. A band, a clamp, a clip, or the like, for example, can be used as the opening/closing member 100 . For example, the band as the opening/closing member 100 is configured so that both ends can be engaged, and the ring shape can be closed by engaging the both ends, and can be opened by releasing the engagement of the both ends. . The clamp and clip as the opening/closing member 100 have, for example, a gripping portion that can be opened and closed.

FIG. 5 shows a case where an openable/closable band is used as the opening/closing member 100 and a scoop 200 is attached as a working tool. The band-shaped opening/closing member 100 is passed through the U-shaped seat 61 and the scoop 200, and the scoop 200 is fixed by engaging both ends of the band to close the ring. Thereby, the scoop 200 can be mounted on the shovel.

FIG. 6 shows a case where an openable/closable band is used as the opening/closing member 100 and a grease gun 210 is attached as a working tool. The band-shaped opening/closing member 100 is passed through the U-shaped seat 61 and the grease gun 210 , and the grease gun 210 is fixed by engaging both ends of the band to close it annularly. Thereby, the grease gun 210 can be mounted on the shovel.

Next, the excavator having the mounting portion of the second embodiment will be further described with reference to FIGS. 7 and 8. FIG. FIG. 7 is a perspective view of a revolving frame 2a of an excavator having a mounting portion of the second embodiment. FIG. 8 is a perspective view of the revolving frame 2a when the scoop 200 is mounted on the shovel having the mounting portion of the second embodiment.

The shovel having the mounting portion of the second embodiment has a U-shaped seat (fixing portion) 62, an opening/closing member 100 and a rod member 110 as the mounting portion for mounting the work implement.

The U-shaped seat 62 is fixed to the front plate 28 . Specifically, the U-shaped seat 62 is a U-shaped member and is fixed (welded) to the front plate 28 at both ends. The U-shaped seat 62 and the front plate 28 form an annular shape. Further, the U-shaped seat 62 is fixed in such a direction that the welded portion with the front plate 28 is arranged vertically. Thereby, the annular shape of the U-shaped seat 62 and the front plate 28 is arranged so as to open in the lateral direction.

The rod member 110 is passed through a pair of U-shaped seats 62 whose annular shape is laterally open.

The opening/closing member 100 is a member that is attached to a rod member 110 and that can be opened and closed. In addition, the opening/closing member 100 can easily attach and detach a working tool. A band, a clamp, a clip, or the like, for example, can be used as the opening/closing member 100 .

FIG. 8 shows a case where an openable/closable band is used as the opening/closing member 100 and a scoop 200 is attached as a working tool. The rod member 110 is attached to the front plate 28 by passing through the ring shape of the U-shaped seat 62 . The band-shaped opening/closing member 100 is passed through the bar member 110 and the scoop 200, and the two ends of the band are engaged to close the ring, thereby fixing the scoop 200. As shown in FIG. Thereby, the scoop 200 can be mounted on the shovel.

Although illustration is omitted, the grease gun 210 can be similarly mounted in the excavator having the mounting portion of the second embodiment.

Next, the excavator having the mounting portion of the third embodiment will be further described with reference to FIG. FIG. 9 is a perspective view of a swing frame 2a of an excavator having a mounting portion of the third embodiment.

The shovel having the mounting portion of the third embodiment has a stat pin (fixed portion) 63 and an opening/closing member (not shown) as the mounting portion for mounting the work implement.

The stat pin 63 is fixed to the front plate 28 . Specifically, the stat pin 63 has a male thread formed on its side surface and is fixed (welded) to the front plate 28 at its lower end.

The opening/closing member is attached to the stat pin 63 and fixed with a nut (not shown) that screws together with the stat pin 63 . Moreover, the opening/closing member can easily attach and detach the work tool. For example, a band, a clamp, a clip, or the like can be used as the opening/closing member.

Although illustration is omitted, in the shovel having the attachment portion of the third embodiment, by using the opening/closing member attached to the stat pin 63, it is possible to mount the working tools (the scoop 200 and the grease gun 210) on the shovel. can.

As described above, according to the excavator according to the present embodiment, it is possible to mount working tools such as the scoop 200 and the grease gun 210 on the excavator. Thereby, for example, a working tool longer than the tool box 22 can be mounted on the shovel.

In addition, since a working tool can be attached to the space between the boom 4 and the front plate 28, the working tool can be prevented from coming into contact with surrounding objects when the upper swing body 2 swings. That is, when the work implement is mounted on the shovel, the mounted work implement prevents the swing range of the upper swing body 2 from expanding.

In addition, since the work implement is attached to the front plate 28, the worker can attach and detach the work implement while standing on the ground. As a result, the work tool can be attached and detached without going up on the upper revolving body 2, so that the workability of the work using the work tool can be improved.

Alternatively, instead of the opening/closing member, a tool holder (not shown) capable of storing work tools may be attached to the fixed portions (61 to 63). As a result, a plurality of small working tools can be stored in the tool case.

Further, although the fixed portions (U-shaped seat 61, U-shaped seat 62, stat pin 63) have been described as being directly attached to the front surface plate 28, they are not limited to this. The fixed portions (61 to 63) may be fixed (welded) to a backing plate (not shown), and the backing plate may be fixed (welded) to the front plate .

Also, although the mounting portion has been described as being provided on the front plate 28, it is not limited to this.

The attachment portion may be provided on the revolving frame 2a on the front right side of the upper revolving body 2 (on the front side of the tool box 22). In other words, the attachment portion may be provided on the front surface of the revolving frame 2a on the right side of the position where the boom 4 is attached to the upper revolving body 2 (between the web plates 26). The front right side of the upper revolving body 2 (the front side of the tool box 22) is lower than the front right side of the upper revolving body 2 (the front side of the cab 3) (see FIG. 1(b)). As a result, when the work tool is attached to the mounting portion and the upper revolving body 2 swings, the work tool can be prevented from coming into contact with surrounding objects. That is, when the work implement is mounted on the shovel, the mounted work implement prevents the swing range of the upper swing body 2 from expanding.

Alternatively, the mounting portion may be provided on the revolving frame 2a on the front left side of the upper revolving body 2 (the front side of the cab 3). In other words, the attachment portion may be provided on the left side of the position (between the web plates 26) where the boom 4 is attached to the upper rotating body 2 and on the front surface of the rotating frame 2a. The front left side of the upper revolving body 2 (the front side of the cab 3) is wider than the front right side of the upper revolving body 2 (the front side of the tool box 22). Therefore, a longer working tool can be attached.

In addition, when the mounting portion is provided on the side surface of the upper revolving body 2 by providing the mounting portion on the front right side of the upper revolving body 2 (the front side of the tool box 22) or the front left side of the upper revolving body 2 (the front side of the cab 3) , it is possible to prevent the width of the vehicle from widening when the work implement is attached. In addition, when the mounting portion is provided on the rear side of the upper revolving body 2 by providing the mounting portion on the front right side of the upper revolving body 2 (the front side of the tool box 22) or on the front left side of the upper revolving body 2 (the front side of the cab 3). , it is possible to suppress the expansion of the swivel range of the upper swivel body 2 .

Further, the mounting portion may be provided on at least one of the front plate 28, the front right side of the upper revolving body 2 (the front side of the tool box 22), and the front left side of the upper revolving body 2 (the front side of the cab 3). Well, you may provide more than one.

Reference Signs List 1 lower running body 2 upper revolving body 2a revolving frame 3 cab 4 boom (attachment)
4a Boom foot pin (attachment rotation axis)
7 boom cylinder 7a boom cylinder foot pin 25 base frame 26 web plate 26a boom bearing portion (bearing portion)
26b boom cylinder bearing portion 27 support portion 27b boom cylinder bearing portion 28 front panel 28a opening 41 side door 61 U-shaped seat (fixing portion, mounting portion)
62 U-shaped seat (fixed part, mounting part)
63 stat pin (fixed part, mounting part)
100 opening/closing member (mounting portion)
110 rod member (mounting portion)
200 scoop (work tool)
210 grease gun (work tool)

Claims (7)

a lower running body;
an upper rotating body capable of rotating with respect to the lower traveling body;
an attachment attached to the upper rotating body,
The excavator, wherein the upper revolving body has an attachment portion to which a work tool can be attached on a front surface of a revolving frame to which the attachment is attached. The revolving frame has a pair of web plates having bearings for supporting the rotation shaft of the attachment, and a front plate provided between the pair of web plates,
The excavator according to claim 1, wherein the mounting portion is provided on the front plate. The mounting portion has an opening/closing member that allows the work tool to be attached and detached,
A shovel according to claim 1 or claim 2. The mounting portion has a fixing portion provided on the front surface,
The opening/closing member is fixed to the fixing part,
Shovel according to claim 3. a lower running body;
an upper rotating body capable of rotating with respect to the lower traveling body;
an attachment attached to the upper rotating body,
A shovel having an attachment portion to which a work tool can be attached on a front surface of a revolving frame on the left or right side of a position where the attachment is attached to the upper revolving body. The mounting portion has an opening/closing member that allows the work tool to be attached and detached,
Shovel according to claim 5. The mounting portion has a fixing portion provided on the front surface,
The opening/closing member is fixed to the fixing part,
Shovel according to claim 6.

Images