JP6002397B2 - Work machine - Google Patents

Description

  The present invention relates to a work machine such as a hydraulic excavator or a hydraulic crane, and more particularly to a work machine equipped with a headlight, and particularly suitable for a wheel type work machine capable of traveling on a general road. It is.

  As a working machine such as a hydraulic excavator provided with a headlamp, for example, one described in Japanese Patent Application Laid-Open No. 2005-98012 (Patent Document 1) or one described in Japanese Patent Application Laid-Open No. 2008-111253 (Patent Document 2). There is.

  The thing of the said patent document 1 has described the wheel-type hydraulic excavator provided with the headlamp in the front part of the upper revolving body, and when such a wheel-type hydraulic excavator performs excavation work etc. at night The wheel-type hydraulic excavator can also travel on a general road, and is used as a headlight when traveling at night on such a general road.

  The above-mentioned Patent Document 2 describes a crawler type hydraulic excavator, and a headlamp as a work lamp is provided at the front of the upper swing body. In addition, in this Patent Document 2, a box is provided on the lower side of the boarding step so that a work lamp can be attached in a state in which a large space is accommodated for the mounted device in the right front cover. There has been disclosed an apparatus in which a work lamp is accommodated in the body.

JP 2005-98012 A JP 2008-111253 A

  However, in the thing of the said patent document 1, since the said headlamp is exposed and attached to the front part etc. of a driver's cab, it is easily damaged by hitting a headlamp at the time of turning of a revolving super structure, etc. There is a problem that it ends up. Further, when the headlamp is accommodated inside the right front cover of the upper revolving structure so as not to damage the headlamp, there is a problem that the device accommodation space inside the right front cover becomes small.

  The right front cover contains, for example, a control valve group that controls the supply and discharge of pressure oil to the hydraulic equipment, and a number of hydraulic hoses, hydraulic piping, joints, manifolds, etc. connected to the control valve group It is necessary to avoid interference with the headlamp. For this reason, when a headlamp is accommodated inside the right front cover, there is a problem that the layout when the control valve group is arranged inside the right front cover is limited.

When the control valve group and the headlamp are housed together in the right front cover, when the hydraulic hose connected to the control valve group flutters due to hydraulic pulsation, the hydraulic hose There is also a risk of damage due to contact with a bracket or the like that supports the lamp.
Furthermore, although this wheel type work machine may travel on a general road, in order to travel on a general road, there are laws and regulations regarding the mounting position of the headlamps. ) Is often different. There are also cases where it is desired to change the mounting position of the headlamp according to customer needs. No consideration is given to the one of Patent Document 1 for making it possible to easily change the mounting position of the headlamp so as to meet such legal regulations and customer needs.

  In the thing of the said patent document 2, a box is provided in the lower side of the step for boarding / alighting so that a headlamp can be attached in the state which ensured the accommodation space of the mounting apparatus in the right front cover large, and this box Although the headlamp is housed in the body, consideration is not given to the replacement of the step and the headlamp when the step is hit and damaged when the upper-part turning body is turned. . In addition, this Cited Document 2 also has no consideration about making it possible to easily change the mounting position of the headlamps so as to meet legal regulations and customer needs.

  The object of the present invention is to secure a large storage space for the mounted device in the right front cover, and even if the headlamp is damaged, it can be easily replaced, and the mounting position of the headlamp is easy. It is to obtain a work machine that can be changed.

In order to achieve the above object, the present invention provides a lower traveling body, an upper revolving body provided on the lower traveling body so as to be capable of swiveling, a working device provided on the upper revolving body so as to be able to be lifted and lowered , It provided in front of the upper frame, a working machine and a step for passenger plurality of stages of the scaffold when getting on and off to the upper rotating body, at least one of steps for passenger of said plurality of stages a step portion, the under side of the step portion is constituted by step assembly and a bracket for accommodating the headlight with attached together by fastening means said bracket of the step assembly to said upper rotating body by mounting, characterized in that the step assembly including the step portion is freely removable from said upper rotating body.

  Here, the upper swing body may include a swing body frame that forms a support structure, and the step assembly may be attached to a front portion of the swing body frame by a fastening means. It is preferable that a step attachment member for attaching the step assembly is integrally provided at the right front portion of the first attachment portion, and the step assembly is detachably fastened to the step attachment member with a bolt.

  The revolving body frame includes a center frame, left and right side frames, and a front beam provided on a front end side and extending left and right, and the left and right side frames include a D frame on an end side, It is preferable that the attachment member is configured to be L-shaped and integrally attached across the front end portion of the D frame of the right side frame and the front beam.

  Further, a headlight assembly including the headlight is detachably accommodated in the bracket of the step assembly, and the headlight assembly includes a housing for mounting in the bracket; It is preferable to provide the headlamp and the winker provided in the housing.

  According to the present invention, it is possible to secure a large accommodation space for the mounted device in the right front cover, and it is possible to easily replace the headlamp even when it is damaged, and to easily install the headlamp. It is possible to obtain a work machine that can be changed to

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows Example 1 of the working machine of this invention, and is a side view explaining the whole structure of a working machine. It is a perspective view which expands and shows the principal part of the upper revolving structure shown in FIG. FIG. 3 is a side sectional view of the vicinity of the storage box in FIG. 2. It is a disassembled perspective view explaining the structure of the step assembly attachment part vicinity shown in FIG. 2, FIG.

  Hereinafter, specific examples of the working machine of the present invention will be described with reference to the drawings. Note that, in each drawing, the portions denoted by the same reference numerals indicate the same or corresponding portions.

  A working machine according to a first embodiment of the present invention will be described with reference to FIGS. 1 is a diagram illustrating a working machine according to a first embodiment of the present invention, and is a side view illustrating the overall configuration of the working machine. FIG. 2 is an enlarged perspective view illustrating a main part of the upper swing body illustrated in FIG. 3 is a side sectional view of the vicinity of the storage box in FIG. 2, and FIG. 4 is an exploded perspective view for explaining the structure in the vicinity of the step assembly mounting portion shown in FIGS.

  FIG. 1 is a diagram showing an overall configuration of a wheel-type hydraulic excavator as a work machine to which the present invention is applied. 1 is a lower traveling body, and 2 is an upper revolving body mounted on the lower traveling body 1 so as to be able to swivel. The upper swing body 2 is attached to the swing body frame 3 that forms a support structure, a cab 4 provided on the left front of the swing body frame 3, and a rear end portion of the swing body frame 3. A counter weight 5 and a building cover 7 are provided, and a working device 6 for excavating earth and sand is attached to the front side of the upper swing body 2.

  The building cover 7 provided on the revolving body frame 3 includes a prime mover cover 8 that houses a prime mover (engine), a hydraulic pump (none of which is shown), a fuel tank 9, and a right front of the revolving structure frame 3. It is comprised by the right front cover 10 etc. which are provided in the part and form the storage box 11. The storage box 11 stores devices such as a multiple valve device.

  2 is an enlarged view of the vicinity of the right front portion of the upper swing body 2 shown in FIG. 1. As shown in FIG. 2, the right front cover 10, that is, the front portion and the upper portion of the storage box 11, is shown. Are provided with a plurality of steps 12 for getting on and off for the operator to move up and down.

  In FIG. 2, reference numeral 13 denotes an opening / closing door provided to open and close the opening of the storage box 11, and the opening / closing door 13 is a right side frame (D) of the revolving structure frame 3 constituting the storage box 11. A frame 21 (see FIG. 3) or the like standing on the frame 3a is rotatably attached by a hinge or the like. In addition, the front surface portion and the upper surface portion of the open / close door 13 are configured in a curved shape along the shape of the right front cover 10 and the arrangement of the step 12. Reference numeral 14 denotes a handle for opening and closing the opening / closing door 13.

  The revolving body frame 3 includes the right side frame 3a and the left side frame (D frame) 3b provided on both sides thereof, and a center frame 3c. A center beam 15 for attaching the working device 6 so as to be movable up and down is integrally fixed to the center frame 3b.

The right side frame 3a is provided with the step 12 for getting on and off, the right front cover 10 forming the storage box 11, the fuel tank 9, and the like, and the left side frame 3b. The driver's cab 4 and the like are installed.
Reference numeral 16 denotes a handrail attached to the right front cover 10 or the like along the step 12 for getting on and off provided in a plurality of stages, and used when an operator gets on and off the step 12 as shown in FIG. As shown, generally a plurality are provided.

  In the present embodiment, among the step 12 for getting on and off provided in the plurality of steps, the step 12 at the bottom is integrally attached to the step portion 121 and the lower side of the step portion 121 and the headlamp. The step assembly 120 includes a bracket 123 that accommodates the assembly 122. The bracket 123 of the step assembly 120 is detachably attached to the right front cover 10 of the upper swing body 2 and the front end side of the right side frame 3a of the swing body frame 3 by fastening means.

  The internal configuration of the storage box 11 is shown in FIG. As shown in FIG. 3, the storage box 11 has a multiple valve device 17 including a hydraulic control valve for controlling actuators such as the lower traveling body 1 and the work device 6, A large number of hydraulic piping groups 18 connected to the valve device 17, joints, manifolds, maintenance devices, and the like are accommodated.

A plurality of the step 12 is attached to the right front cover 10 forming the storage box 11, and the lowermost step 12 is configured as a step assembly 120 as described above. As shown in FIG. 3, a bolt (fastening means) 19 is attached to a step mounting plate (step mounting member) 22 fixed to the tip of the right side frame 3a.
3 shows a state in which a step member 20 that protrudes forward is attached to the uppermost step 12 shown in FIG. In FIG. 3, reference numeral 21 denotes a frame for forming the storage box.

Next, a detailed structure of the step assembly 120 shown in FIGS. 2 and 3 and a structure for attaching the step assembly 120 to the upper swing body 2 will be described with reference to FIG.
First, the detailed structure of the step assembly 120 will be described. The step assembly 120 includes a step portion 121 and a bracket 123 attached integrally to the lower side of the step portion 121. The bracket 123 is provided with a housing space for housing the headlamp assembly 122. The headlamp assembly 122 is housed in the bracket 123 and is formed in the bracket 123. It is attached to the bracket 123 with a bolt (not shown) through a hole 123a, a support member 123b, and the like.

  The headlamp assembly 122 includes a housing 122a for mounting in the bracket 123, a headlight (headlight) 122b and a winker (direction indicator) 122c provided in the housing 122a. ing.

  Next, a structure for attaching the step assembly 120 to the upper swing body 2 will be described. In the present embodiment, an example in which the step assembly 120 is attached to the right side frame 3a of the revolving structure frame 3 will be described. The step mounting plate 22 is fixed to the right side frame 3a, that is, the front end of the D frame constituting the right side frame 3a by welding or the like, and this step mounting plate 22 improves its rigidity. The step assembly 120 is L-shaped so that the step assembly 120 can be firmly fixed. The side portion of the L-shaped step mounting plate 22 is fixed to the front beam 23 of the revolving body frame 3 by welding or the like, so that the step mounting plate 22 is connected to the front end portion of the D frame and the front beam. It is attached as a single piece across.

That is, in the present embodiment, the step mounting plate 22 is provided in an L-shaped recess formed by cutting out a part of a corner portion formed by the front beam 23 and the right side frame 3a. The step assembly 120 is attached to accommodate a part of the step assembly 120. Therefore, the amount of forward projection of the headlamp can be suppressed, and damage to the headlamp can be prevented.
The step mounting plate 22 is provided with a plurality of bolt holes 22a (four in this example) for mounting the step assembly 120. The bracket of the step assembly 120 is also formed with a bolt hole (not shown) at a position corresponding to the bolt hole 22 a of the step mounting plate 22.

  When the step assembly 120 is attached to the step mounting plate 22, the bracket 123 of the step assembly 120 is first bolted (fastening means) 19 before the headlamp assembly 122 is assembled to the bracket 123 of the step assembly 120. To the step mounting member 22. Thereafter, the headlamp assembly 122 is inserted into the bracket 123 of the step assembly 121, and the headlamp assembly 122 is bolted or the like through a long hole 123a or a support member 123b provided in the bracket 123. Install.

In this way, the step assembly 120 can be attached to the right front portion of the swing frame 3 as shown in FIG.
In FIG. 4, 12a is a protrusion-shaped slip stopper provided in large numbers on the upper surface and the upper surface edge of step 12, and 24 is a step provided in front of the side of the right side frame 3a. It is provided so that a person etc. can climb the upper turning body 2 also from the side of the work machine. Further, the revolving body frame 3 is provided with a mounting seat 25 for mounting a valve and a bracket 26 and a mounting seat 27 for mounting various components.

  In addition, although the present Example demonstrated the case where the part of the step 12 of the lowest step among the some steps 12 for boarding / alighting was attached to the upper revolving body 2 as the step assembly 120, and was installed detachably, The adoption of the step assembly 120 is not limited to the lowermost step 12, and the removable step assembly 120 can be similarly adopted for the other steps 12. Further, when the step assembly 120 is employed in the step 12 other than the lowest step, the step assembly 120 is detachably attached to the right front cover 10 of the upper swing body 2 by a fastening means such as a bolt. Just do it.

Since the present embodiment is configured as described above, the following effects can be obtained.
(1) At least one of the steps 12 for getting on and off is a step assembly 120 including a step portion 121 and a bracket 123 that is integrally attached to the lower side of the step portion 121 and accommodates the headlamp 122b. Since the bracket of the step assembly is detachably attached to the upper revolving body 2 by the fastening means 19 such as a bolt, the headlamp 122b does not need to be installed in the storage box 11 in the right front cover 10. Accordingly, it is possible to secure a large storage space for the mounted device in the storage box 11. In addition, layout restrictions when a control valve group such as a multiple valve device is installed inside the right front cover can be eliminated.

(2) The headlamp 122b is installed in the bracket 123 at the bottom of the step assembly 120, and is not attached with only the headlamp exposed, so the headlamp is guarded by the step 12. Therefore, the possibility that the headlamp is damaged can be reduced.

(3) Even if the headlamp 122b is damaged, the headlamp assembly 122 only needs to be replaced, so that the replacement is easy. Further, even if the entire step assembly 120 is damaged by being hit or the like, the entire step assembly 120 may be replaced, so that the step assembly 120 can be easily replaced.

(4) Since the step assembly 120 having different dimensions in the front-rear direction and the vertical direction can be manufactured, the installation position of the headlamp 122b can be easily changed. Thus, it is possible to obtain a work machine that can easily change the mounting position of the headlamp.

1: Lower traveling body, 2: Upper turning body,
3: Revolving body frame, 3a: Right side frame, 3b: Left side frame,
3c: Center frame,
4: cab, 5: counterweight,
7: building cover, 8: prime mover cover, 9: fuel tank,
10: Right front cover, 11: Storage box,
12: Step, 12a: Non-slip,
13: Opening / closing door, 14: Handle,
15: Center beam, 16: Handrail,
17: Multiple valve device, 18: Hydraulic piping group,
19: bolt (fastening means),
22: Step mounting plate (step mounting member), 22a: Bolt hole,
23: Front beam, 24: Step,
120: Step assembly, 121: Step part,
122: headlamp assembly, 122a: housing, 122b: headlamp,
122c: Winker
123: bracket, 123a: long hole, 123b: support member.

Claims (5)

A lower traveling body, an upper revolving body provided on the lower traveling body so as to be capable of swiveling, a working device provided on the upper revolving body so as to be able to be lifted and lowered, and provided in front of the upper revolving body. In a working machine comprising a plurality of steps for getting on and off, which serve as a scaffold when getting on and off the revolving structure,
At least one of the plurality of steps for getting on and off is constituted by a step assembly including a step part and a bracket that is integrally attached to the lower side of the step part and accommodates a headlamp,
A work machine characterized in that the step assembly including the step can be detached from the upper swing body by attaching the bracket of the step assembly to the upper swing body by fastening means.   2. The work machine according to claim 1, wherein the upper swing body includes a swing body frame that forms a support structure, and the step assembly is attached to a front portion of the swing body frame by fastening means. Work machine.   3. The work machine according to claim 2, wherein a step mounting member for mounting the step assembly is integrally provided at a right front portion of the revolving structure frame, and the step assembly can be attached to and detached from the step mounting member with a bolt. A work machine characterized by being configured to be fastened.   4. The work machine according to claim 3, wherein the revolving structure frame includes a center frame, left and right side frames, and a front beam that is provided on a front end side and extends to the left and right, and the left and right side frames are D on an end side. A work machine comprising a frame, wherein the step mounting member is formed in an L shape and is integrally mounted across the front end of the D frame of the right side frame and the front beam.   The work machine according to any one of claims 1 to 4, wherein a headlight assembly including the headlight is detachably accommodated in the bracket of the step assembly, and the headlight is included. A lamp assembly includes a casing for mounting in the bracket, and the headlamp and winker provided in the casing.

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