Excavator

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

[Technical field]

[0001] The present disclosure relates to a shovel. [Background technology]

[0002] For example, a shovel having a lower traveling body, an upper rotating body, a cab, a boom, an arm, and a bucket has been disclosed (see Patent Document 1). A tool box capable of storing work tools and work machines is disposed in the shovel. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2016-132975 A Summary of the Invention [Problem to be solved by the invention]

[0004] When maintaining a shovel, tools such as a grease gun for injecting grease into the moving parts of the shovel and a shovel for removing soil and sand adhering to the lower traveling body are used. However, the space for accommodating the tools is limited in the shovel.

[0005] In view of the above problems, an object of the present invention is to provide a shovel capable of mounting a working tool. [Means for solving the problem]

[0006] In order to achieve the above object, one embodiment of the present invention provides a construction machine comprising a lower traveling body, an upper rotating body that can rotate relative to the lower traveling body, and an attachment that is attached to the upper rotating body, the upper rotating body including a rotating frame to which the attachment is attached. The rotating frame has a pair of web plates having a bearing portion for supporting a rotation shaft of the attachment, and a front plate provided between the pair of web plates, A shovel is provided having a mounting portion on the front surface thereof to which a work implement can be attached. Effect of the Invention

[0007] According to the above-described embodiment, a shovel capable of mounting a work tool can be provided. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram illustrating a shovel according to an embodiment of the present invention. [Diagram 2] FIG. 1 is a perspective view of a shovel according to an embodiment of the present invention, as viewed from the front right side. [Diagram 3] FIG. 4 is a cross-sectional view showing the mounting structure between the upper rotating body and the boom. [Figure 4] FIG. 1 is a perspective view of a revolving frame of a shovel having a mounting portion of a first embodiment. [Diagram 5] FIG. 2 is a perspective view of a revolving frame when a shovel is mounted on a shovel having the mounting portion of the first embodiment. [Figure 6] FIG. 2 is a perspective view of a rotating frame when a grease gun is mounted on a shovel having the mounting portion of the first embodiment. [Figure 7] FIG. 11 is a perspective view of a revolving frame of a shovel having a mounting portion of a second embodiment. [Figure 8] FIG. 11 is a perspective view of a revolving frame when a shovel is mounted on a shovel having a mounting portion of the second embodiment. [Figure 9] FIG. 11 is a perspective view of a revolving frame of a shovel having a mounting portion of a third embodiment.

[0009] <Third embodiment> Next, the shovel having the mounting portion of the third embodiment will be further described with reference to Fig. 9. Fig. 9 is a perspective view of a revolving frame 2a of the shovel having the mounting portion of the third embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment of the invention will be described with reference to the drawings.

[0011] An overview of the excavator according to this embodiment will be described with reference to FIG. 1. FIG. 1 is a diagram for explaining the excavator according to this embodiment. FIG. 1(a) is a right side view of the excavator, and FIG. 1(b) is a plan view of the upper rotating body. Note that FIG. 1(b) illustrates a state in which the boom 4 is removed. Moreover, the direction in which the boom 4 is attached as viewed from the center of the upper rotating body 2 is defined as the front, and the opposite side is defined as the rear. Moreover, when looking forward from the center of the upper rotating body 2, the left side is defined as the left side, and the right side is defined as the right side.

[0012] 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 with a driver's seat provided inside is disposed on the left front part of the upper rotating body 2. One end of a boom 4 is rotatably attached to the center of the front part of the upper rotating body 2. The arm 5 is rotatably attached to the tip part of the boom 4. The bucket 6, which is an end attachment, is rotatably attached to the tip part of the arm 5. Instead of the bucket 6, which is an excavation attachment, an end attachment such as a breaker or a crusher may be attached to the tip part of the arm 5. The boom 4, the arm 5, and the bucket 6 constitute an attachment.

[0013] The excavator also has a boom cylinder 7, an arm cylinder 8, and a bucket cylinder 9 as hydraulic actuators for driving the attachments. The 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 the boom cylinder 7 is rotatably attached to the boom 4. The arm cylinder 8 drives the arm 5. One end of the arm cylinder 8 is rotatably attached to the boom 4. The other end of the arm cylinder 8 is rotatably attached to the arm 5. The bucket cylinder 9 drives the 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.

[0014] An engine room 20 is formed behind the upper rotating body 2, and an engine (not shown) is disposed in the engine room 20. The engine room 20 is covered with an engine hood 30. The engine hood 30 is rotatably supported by a hinge 30a. Therefore, the engine hood 30 can be opened by grasping and lifting a handle 30b attached to the opposite side of the hinge 30a. In other words, the engine hood 30 can be opened when inspecting and maintaining components such as the engine and exhaust gas treatment device installed in the engine room 20.

[0015] A fuel tank 21 for storing fuel to be supplied to the engine is disposed on the front right side of the engine compartment 20.

[0016] A top cover 38 is provided at the center of the front of the engine compartment 20. As described above, when an operator opens the engine hood 30 for inspection or maintenance, the operator can stand on the top cover 38 to perform the work.

[0017] A treatment agent tank (not shown) is disposed in front of the fuel tank 21 in which a treatment agent (e.g., urea water) for treating engine exhaust gas is stored. The treatment agent tank is covered with a treatment agent tank cover 40. The upper surface of the treatment agent tank cover 40 is partially lowered and provided with a step. This step forms a staircase used by workers when climbing up to the upper rotating body 2. An openable side door 41 is provided on the right side surface of the treatment agent tank cover 40.

[0018] A tool box 22 capable of storing work tools and work machinery is disposed in front of the treating agent tank cover 40. The upper surface of the tool box 22 is also utilized as part of the stairs used when workers climb up onto the upper rotating body 2. Note that in cases where the treating agent tank and the treating agent tank cover 40 are not disposed 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 disposed in front of the fuel tank 21.

[0019] The above-mentioned components constituting the upper rotating body 2 are mounted on a rotating 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 a staircase used when an operator climbs up to the upper rotating body 2. The step 23 is attached to the inclined side surface of the rotating frame 2a in front of the portion where the tool box 22 is mounted.

[0020] As described above, the step 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 staircase used by the worker when climbing up to the upper rotating body 2. The handrail unit 50 is attached near the staircase formed in this manner. The handrail unit 50 is disposed on the front right side of the upper rotating body 2, opposite the cab 3 disposed on the front left side. A web plate 26 that rotatably supports the boom 4 is fixed to the front center of the upper rotating body 2. Therefore, the above-mentioned staircase is formed between the web plate 26 and the handrail unit 50.

[0021] Next, a further description will be given of the upper rotating body 2. Fig. 2 is a perspective view of the excavator according to this embodiment as viewed from the front right side.

[0022] The revolving frame 2 a has a base frame 25 , a web plate 26 , a support portion 27 , and a front plate 28 .

[0023] The base frame 25 is a frame arranged horizontally.

[0024] The web plates 26 are a pair of plate members extending in the front-rear direction, and are erected on the base frame 25. The cab 3 is disposed to the left of the pair of web plates 26. In addition, the fuel tank 21, the processing agent tank (processing agent tank cover 40), and the tool box 22 are disposed to the right of the pair of web plates 26.

[0025] The web plate 26 has a boom bearing portion 26a (see FIG. 4 described later) that supports a boom foot pin 4a of the boom 4. The boom 4 is rotatably attached by the pair of boom bearing portions 26a 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.

[0026] The support part 27 is disposed between the pair of web plates 26, and stands on the base frame 25. The support part 27 is a member having a boom cylinder bearing part 27b (see FIG. 4 described later) that supports the other of the boom cylinder foot pins 7a of the boom cylinder 7. The boom cylinder 7 is rotatably attached by the boom cylinder bearing part 26b of the web plates 26 and the boom cylinder bearing part 27b of the support part 27.

[0027] The front plate 28 is provided between the pair of web plates 26 and is a member that closes the gap between the pair of web plates 26 at the front side. When viewed from the side, the front plate 28 is inclined so that the rear is higher and the front is lower. The front plate 28 is formed so that the boom bearing portion 26a and the boom cylinder bearing portions 26b, 27b are on the outside. The lower part of the front plate 28 has an opening 28a. Hoses that supply hydraulic pressure to the boom cylinder 7, arm cylinder 8, and bucket cylinder 9 are routed from a control valve (not shown) in the upper rotating body 2 through the opening 28a to the boom cylinder 7, arm cylinder 8, and bucket cylinder 9.

[0028] Fig. 3 is a cross-sectional view showing the mounting structure between the upper rotating body 2 and the boom 4. Fig. 3(a) shows the boom 4 in a raised state, and Fig. 3(b) shows the boom 4 in a lowered state. Fig. 3(b) shows the positional relationship between the boom 4 and the front panel 28 when the boom cylinder 7 is fully contracted.

[0029] The top of the boom cylinder 7 is rotatably connected to the side portion near the center of the boom 4 in the longitudinal direction. Therefore, even when the boom cylinder 7 is fully contracted, as shown in FIG. 3(b), there is a space between the underside 4B of the boom 4 and the front plate 28, into which the boom 4 does not enter even when the boom 4 is moved up and down. The excavator according to this embodiment has an attachment part to which a working tool can be attached in this space. This allows the excavator according to this embodiment to be equipped with a working tool.

[0030] An example of a mounting portion to which a work tool can be attached will be described with reference to Figs. 4 to 9.

[0031] First, the shovel having the mounting portion of the first embodiment will be further described with reference to Fig. 4 to Fig. 6. Fig. 4 is a perspective view of a revolving frame 2a of a shovel having the mounting portion of the first embodiment. Fig. 5 is a perspective view of the revolving frame 2a when a shovel having the mounting portion of the first embodiment is mounted with a shovel 200. Fig. 6 is a perspective view of the revolving frame 2a when a grease gun 210 is mounted on a shovel having the mounting portion of the first embodiment.

[0032] The shovel having the mounting portion of the first embodiment has a U-shaped base (fixing portion) 61 and an opening / closing member 100 as a mounting portion for mounting a working implement.

[0033] The U-shaped base 61 is fixed to the front panel 28. Specifically, the U-shaped base 61 is a U-shaped member, and is fixed (welded) to the front panel 28 at both ends. The U-shaped base 61 and the front panel 28 form a ring shape. The U-shaped base 61 is fixed in an orientation in which the welded portion with the front panel 28 is disposed horizontally. As a result, the ring shape of the U-shaped base 61 and the front panel 28 is disposed so as to open in the vertical direction.

[0034] The opening / closing member 100 is attached to the U-shaped base 61 and is an openable / closable member. Furthermore, a working tool can be easily attached and detached to the opening / closing member 100. For example, a band, a clamp, a clip, or the like can be used as the opening / closing member 100. A band as the opening / closing member 100 is configured such that both ends are engageable, and the band can be closed in a ring shape by engaging both ends, and the ring shape can be opened by releasing the engagement between both ends. A clamp and a clip as the opening / closing member 100 have, for example, a gripping portion that can be opened and closed.

[0035] 5 shows a case where an openable / closable band is used as the opening / closing member 100, and a shovel 200 is attached as a work tool. The band-like opening / closing member 100 is passed through the U-shaped base 61 and the shovel 200, and the two ends of the band are engaged to close the band into a ring shape, thereby fixing the shovel 200. This allows the shovel 200 to be mounted on the shovel.

[0036] 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 two ends of the band are engaged to close the band into a ring shape, thereby fixing the grease gun 210. This allows the grease gun 210 to be mounted on the shovel.

[0037] Next, the shovel having the mounting portion of the second embodiment will be further described with reference to Fig. 7 and Fig. 8. Fig. 7 is a perspective view of a revolving frame 2a of a shovel having the mounting portion of the second embodiment. Fig. 8 is a perspective view of the revolving frame 2a when a scoop 200 is mounted on the shovel having the mounting portion of the second embodiment.

[0038] The shovel having the mounting portion of the second embodiment has a U-shaped base (fixing portion) 62, an opening / closing member 100, and a rod member 110 as a mounting portion for mounting a working implement.

[0039] The U-shaped base 62 is fixed to the front panel 28. Specifically, the U-shaped base 62 is a U-shaped member, and is fixed (welded) to the front panel 28 at both ends. The U-shaped base 62 and the front panel 28 form a ring shape. The U-shaped base 62 is fixed in an orientation in which the welded portion with the front panel 28 is disposed vertically. As a result, the ring shape of the U-shaped base 62 and the front panel 28 is disposed so as to open in the horizontal direction.

[0040] The rod member 110 is passed through a pair of U-shaped seats 62 whose ring shapes open laterally.

[0041] The opening / closing member 100 is attached to a rod member 110 and is an openable / closable member. Furthermore, a working tool can be easily attached and detached to the opening / closing member 100. For example, a band, a clamp, a clip, or the like can be used as the opening / closing member 100.

[0042] 8 shows a case where an openable / closable band is used as the opening / closing member 100, and a shovel 200 is attached as a work tool. The rod member 110 is attached to the front panel 28 by being passed through the ring-shaped U-shaped seat 62. The band-shaped opening / closing member 100 is passed through the rod member 110 and the shovel 200, and the two ends of the band are engaged to close the ring, thereby fixing the shovel 200. This allows the shovel 200 to be mounted on the shovel.

[0043] Although not shown in the drawings, the grease gun 210 can also be mounted in a similar manner on a shovel having the mounting portion of the second embodiment.

[0044] Next, a further explanation will be given of the shovel having the mounting portion of the third embodiment with reference to Fig. 9. Fig. 9 is a perspective view of a revolving frame 2a of the shovel having the mounting portion of the third embodiment.

[0045] The shovel having the attachment portion of the third embodiment has a stud pin (fixing portion) 63 and an opening / closing member (not shown) as an attachment portion for attaching a working tool.

[0046] The stud pin 63 is fixed to the front plate 28. Specifically, the stud pin 63 has a male thread formed on a side surface, and the lower end is fixed (welded) to the front plate 28.

[0047] The opening / closing member is attached to a stud pin 63 and fixed with a nut (not shown) that screws into the stud pin 63. The opening / closing member also allows easy attachment and detachment of a working tool. For example, a band, a clamp, a clip, or the like can be used as the opening / closing member.

[0048] Although not shown in the drawings, in a shovel having the mounting portion of the third embodiment, by using an opening and closing member attached to the stud pin 63, a working tool (shovel 200, grease gun 210) can be mounted on the shovel.

[0049] As described above, according to the shovel according to this embodiment, working tools such as the shovel 200 and the grease gun 210 can be mounted on the shovel. This allows working tools longer than the tool box 22, for example, to be mounted on the shovel.

[0050] In addition, since a working tool can be attached to the space between the boom 4 and the front panel 28, it is possible to prevent the working tool from coming into contact with surrounding objects when the upper rotating body 2 rotates. In other words, when the working tool is mounted on the excavator, the attached working tool prevents the rotation range of the upper rotating body 2 from expanding.

[0051] In addition, since the working tool is attached to the front panel 28, the worker can attach and detach the working tool while standing on the ground. This allows the worker to attach and detach the working tool without climbing onto the upper rotating body 2, improving the workability of work using the working tool.

[0052] Also, instead of the opening and closing member, a tool box (not shown) capable of storing working tools may be attached to the fixed parts (61 to 63). This allows a plurality of small working tools to be stored in the tool box.

[0053] In addition, the fixing parts (U-shaped base 61, U-shaped base 62, stud pin 63) have been described as being directly attached to front panel 28, but this is not limited to the above. The fixing parts (61 to 63) may be fixed (welded) to a backing plate (not shown), and the backing plate may be fixed (welded) to front panel 28.

[0054] Further, the mounting portion has been described as being provided on the front panel 28, but this is not limited to this.

[0055] The mounting portion may be provided on the rotating frame 2a at the front right side of the upper rotating body 2 (in front of the tool box 22). In other words, the mounting portion may be provided on the front side of the rotating frame 2a, to the right of the position (between the web plates 26) where the boom 4 is attached to the upper rotating body 2. The front right side of the upper rotating body 2 (the front side of the tool box 22) is lower and rearward than the front right side of the upper rotating body 2 (the front side of the cab 3) (see FIG. 1(b)). This makes it possible to prevent the working tool from coming into contact with surrounding objects when the upper rotating body 2 rotates after being attached to the mounting portion. In other words, when the working tool is mounted on the excavator, the attached working tool prevents the rotation range of the upper rotating body 2 from expanding.

[0056] The mounting portion may also be provided on the rotating frame 2a at the front left side of the upper rotating body 2 (in front of the cab 3). In other words, the mounting portion may be provided on the front surface of the rotating frame 2a, to the left of the position where the boom 4 is attached to the upper rotating body 2 (between the web plates 26). The front left side of the upper rotating body 2 (in front of the cab 3) is formed wider than the front right side of the upper rotating body 2 (in front of the tool box 22). This allows a longer working tool to be attached.

[0057] Moreover, by providing the mounting portion on the front right side of the upper rotating body 2 (in front of the tool box 22) or the front left side of the upper rotating body 2 (in front of the cab 3), it is possible to prevent the vehicle width from increasing when a working tool is attached, compared to when the mounting portion is provided on the side of the upper rotating body 2. Moreover, by providing the mounting portion on the front right side of the upper rotating body 2 (in front of the tool box 22) or the front left side of the upper rotating body 2 (in front of the cab 3), it is possible to prevent the rotation range of the upper rotating body 2 from increasing, compared to when the mounting portion is provided at the rear of the upper rotating body 2.

[0058] In addition, the mounting portion may be provided on at least one of the front panel 28, the front right side of the upper rotating body 2 (in front of the tool box 22), and the front left side of the upper rotating body 2 (in front of the cab 3), or may be provided on multiple sides. [Explanation of symbols]

[0059] 1 Undercarriage 2 Upper rotating body 2a Swivel frame 3 Cab 4 Boom (attachment) 4a Boom foot pin (rotation axis of attachment) 7 Boom cylinder 7a Boom cylinder foot pin 25 Base Frame 26 Web Board 26a Boom bearing part (bearing part) 26b Boom cylinder bearing part 27 Support part 27b Boom cylinder bearing part 28 Full board 28a opening 41 Side door 61 U-shaped base (fixing part, mounting part) 62 U-shaped base (fixing part, mounting part) 63 Stud pin (fixing part, mounting part) 100 Opening and closing member (mounting part) 110 Rod member (mounting part) 200 Shovel (tool) 210 Grease gun (work tool)

Claims

1. A lower running body; An upper rotating body that can rotate relative to the lower traveling body; An attachment attached to the upper rotating body, The upper rotating body has a rotating frame to which the attachment is attached, The rotating frame includes a pair of web plates having bearing portions for supporting a rotation shaft of the attachment, and a front plate provided between the pair of web plates, The shovel has a mounting portion on the front surface of the front panel to which a work tool can be attached.

2. The mounting portion has an opening and closing member to which the working tool can be attached and detached. The shovel according to claim 1.

3. The mounting portion has a fixing portion provided on a front surface of the front panel, The opening / closing member is fixed to the fixing portion. The shovel according to claim 2.

4. The upper rotating body further has a second mounting portion on the front surface of the rotating frame to the left or right of the position where the attachment is attached to the upper rotating body, to which a second work tool can be attached. The shovel according to any one of claims 1 to 3.

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