JP2006316618A - Miniature slewing gear - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a miniature slewing gear capable of permitting to easily pull out a floor mat laid near its driver's feet on the floor of the slewing gear when cleaning the floor mat for removing sediment or the like and also permitting to easily return it to a previous position thereby permitting to clean the floor mat easily and efficiently. <P>SOLUTION: A floor mat 26 laid on the floor surface 25 near a driving device 9 comprises a pedal mat 26a located near a portion where operation pedals are arranged on the floor surface, a driver's foot mat 26b arranged at the rear of the pedal mat 26a located separately from the foot mat 26b, and an exhaust hole 65 contacting to the inner floor surface in the space for the driving device 9. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a configuration of an operation unit in an ultra-small turning work machine in which a work attachment is mounted on a boom attached to a swivel, and the work attachment can be offset left and right.

2. Description of the Related Art Conventionally, there has been known an ultra-small turning work machine in which a work attachment is attached to a boom attached to a swivel, and the work attachment can be decentered left and right. For example, as described in JP-A-8-246504.
In such an ultra-small turning work machine, for example, as shown in FIG. 10, a turning base 84 is attached to the upper part of the traveling apparatus 1 so as to be turnable, and a driver's seat 86 and the like are mounted on the cabin 89a on the upper part of the turning base 84. An operating unit 89 configured to be covered with is provided. On the floor surface 98 of the operation unit 89, a floor mat 99 made of a rubber-like member or a resin member is laid. The operation unit 89 is configured to get on and off from an entrance 77 formed outside the operation unit 89.
Further, a first boom 90 is attached to the inside of the operation unit 89 so as to be rotatable up and down, and a second boom 91 is attached to the front end portion of the first boom 90 so as to be rotatable in the left-right direction. A third boom 92 is attached to 91 so as to be pivotable in the left-right direction, an arm 93 is attached to the third boom 92 so as to be pivotable in the vertical direction, and a bucket 94 which is a work attachment is vertically attached to the tip of the arm 93 The arm 93 and the bucket 94 are configured to be capable of being offset in the left-right direction by rotating the second boom 91 in the left-right direction.

  The first boom 90, the second boom 91, the third boom 92, the arm 93, the bucket 94, and the like constitute a backhoe device 85, and the backhoe device 85 is an operation provided in the operation unit 89. By operating the lever, the hydraulic cylinder is extended and driven.

  Further, as shown in FIG. 11, the floor mat 99 is fixed to the floor surface 98 by, for example, a rear end thereof being pressed by a pressing plate 79, and a corner portion of the floor surface 98 at the entrance / exit 77. In the vicinity, a non-slip sheet 78 formed in the form of a sheet as shown in FIG. 12 is affixed to make it difficult for an operator to get on and off to slip.

Further, like the floor mat 76 shown in FIG. 13, the floor mat 99 is laid to the corner of the floor surface 98 at the entrance / exit 77, and the end portion 76a of the floor mat 76 acts as a non-slip member. Some were composed.
JP-A-8-246504

  However, as shown in FIG. 12 described above, when an anti-slip sheet 78 is provided in the vicinity of the corner of the floor surface 98 at the entrance / exit 77 to form an anti-slip structure, the anti-slip sheet 78 is provided at the entrance / exit 77. Since it is difficult to affix it to a bent portion such as a corner portion, the anti-slip effect at the corner portion of the entrance / exit 77 where the operator actually gets on / off is weak.

  Further, as shown in FIG. 13, when the end portion 76a of the floor mat 76 is made to act as a non-slip member, the floor mat 76 is composed of a rubber-like member or a resin member, so that the rigidity is small, and the end portion 76a. When I stepped on, the stability was bad.

  Further, since the floor surface 98 is covered with a single floor mat 99, the front pedal portion on which pedals are disposed and the lower foot portion located behind the pedal portion are covered with, for example, the floor mat. When the earth and sand accumulated in the lower part of the foot 99 were to be cleaned and thrown away, when the floor mat 99 was to be pulled out from the entrance 77, the pedals were caught by the pedals, so that the detachability was poor and it was difficult to discharge the earth and sand.

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.
A first boom (10) attached to the operating part (9) of the swivel base (4) so as to be pivotable up and down, and is attached to the tip of the first boom (10) so as to be pivotable in the left-right direction. The second boom (11), the third boom (12) attached to the second boom (11) so as to be rotatable in the left-right direction, and attached to the third boom (12) so as to be rotatable in the vertical direction. Arm (13) and a work attachment (14) attached to the tip of the arm (13), and the work attachment (14) by turning the second boom (11) in the left-right direction. Is configured to be offset in the left-right direction, the floor mat (26) laid on the floor surface (25) of the operating unit (9) is connected to the operation pedals of the floor surface (25). Pedal part map arranged in the provided part (26a) and a foot lower mat (26b) disposed behind the pedal part mat (26a), and the floor (25 A discharge hole (65) in contact with () is opened.

Since the present invention is configured as described above, the following effects can be obtained.
A first boom (10) attached to the operating part (9) of the swivel base (4) so as to be pivotable up and down, and is attached to the tip of the first boom (10) so as to be pivotable in the left-right direction. The second boom (11), the third boom (12) attached to the second boom (11) so as to be rotatable in the left-right direction, and attached to the third boom (12) so as to be rotatable in the vertical direction. Arm (13) and a work attachment (14) attached to the tip of the arm (13), and the work attachment (14) by turning the second boom (11) in the left-right direction. Is configured to be offset in the left-right direction, the floor mat (26) laid on the floor surface (25) of the operating unit (9) is connected to the operation pedals of the floor surface (25). Pedal part map arranged in the provided part (26a) and a foot lower mat (26b) disposed behind the pedal part mat (26a), and the floor (25 The drain hole (65) that is in contact with) is opened, so that when the foot lower mat, which is likely to accumulate dirt and the like, is cleaned, the foot lower mat can be easily removed from the floor surface and mounted. Work can be performed easily and efficiently.
In addition, by forming the discharge hole, for example, when washing the earth and sand accumulated on the floor surface with water, water is ejected from the hose from the entrance and exit to form the earth and sand, and the discharge hole of the operation part is formed. It is possible to flow in the direction of the one side face and easily discharge from the discharge hole to the outside of the operating part.
Thus, the floor mat and the floor surface can be easily cleaned.

Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a side view showing an ultra-small turning work machine according to the present invention, FIG. 2 is also a rear view, FIG. 3 is a plan view showing an operation unit, and FIG. 4 is a state in which an anti-slip member and a floor mat are not mounted. FIG. 5 is a rear sectional view showing a portion of the fixing portion of the anti-slip member, FIG. 6 is a rear sectional view showing a portion other than the fixing portion of the anti-slip member, and FIG. FIG. 8 is a rear view showing another embodiment, FIG. 8 is a front view showing a nameplate and a display for showing the operation pattern of the backhoe device, FIG. 9 is a perspective view showing the display, and FIG. 10 is a conventional ultra-small turning machine. FIG. 11 is a rear sectional view showing a non-slip member and a floor mat in a conventional ultra-small turning work machine, FIG. 12 is a rear sectional view showing a conventional example, and FIG. 13 is a conventional example. It is a rear surface sectional view showing.

The configuration of the ultra-small turning work machine of the present invention will be described.
1 and 2, a swivel base 4 is attached to the upper part of a travel apparatus 1 equipped with a pair of left and right crawler travel apparatuses 2, and a driver's seat 6 is disposed on one side of the upper part of the swivel base 4. And the upper part of the driver's seat 6 is covered with a canopy 7 to constitute a driver 9, and the backhoe device 5 is arranged on the side of the driver 9. A battery 61 and a fuel tank 62 are disposed in front of the operation unit 9, and the battery 61 and the fuel tank 62 are covered with a cover 63. Further, for example, at the rear end portion of the traveling device 1, the earth discharging plate 3 is attached.

  The backhoe device 5 lifts the first boom 10 as much as possible, and in the state where the arm 13 and the bucket 14 are maximally retracted without being offset left and right (the state shown in FIG. 1), the entire backhoe device 5 is entirely swivel 4. It is configured so that it can be stored within the swivel diameter. The bucket 14 and the operation unit 9 are configured not to interfere with each other in the small turning storage state where the entire backhoe device 5 is stored within the turning diameter of the turntable 4.

Next, the backhoe device 5 will be described.
The backhoe device 5 includes a first boom 10 that is attached to the swivel 4 so as to be rotatable up and down, a second boom 11 that is attached to the tip of the first boom 10 so as to be rotatable in the left-right direction, and the second boom 11. A third boom 12 pivotably attached to the left and right sides, an arm 13 pivotally attached to the third boom 12 and a work attachment attached to the tip of the arm 13. A certain bucket 14 is provided, and the arm 13 and the bucket 14 can be offset in the left-right direction by rotating the second boom 11 in the left-right direction.

  A boom cylinder 29 is interposed between the first boom 10 and the swivel 4, and the first boom 10 can be turned up and down by expansion and contraction of the boom cylinder 29. An arm cylinder 17 is interposed between the arm 13 and the arm 13 so that the arm 13 can be turned up and down by expansion and contraction. A bucket cylinder 48 is interposed between the arm 13 and the bucket 14 so that the bucket cylinder 48 The bucket 48 can be turned up and down by expansion and contraction. A trajectory 66 in FIG. 1 is a trajectory through which the tip of the bucket 14 passes as the boom cylinder 29, the arm cylinder 17, the bucket cylinder 48, and the like extend and contract. And so as not to interfere with each other.

  The lower end of the second boom 11 is connected to the upper end of the first boom 10 and a lower rotating shaft 15 so as to be rotatable left and right. The upper end of the second boom 11 is connected to the third boom by an upper rotating shaft 16. 12 is connected to the second boom 11 and the first boom 10 so that an offset cylinder 31 is interposed. Further, an offset rod 30 is installed between the first boom 10 and the third boom 12, and both end portions of the offset rod 30 are pivotally attached to the first boom 10 and the third boom 12, respectively. The rod 30, the first boom 10, the second boom 11, and the third boom 12 constitute a parallel quadruple link mechanism. And by extending and contracting the offset cylinder 31, the bucket 14 is eccentric with respect to the first boom 10 and offset in the left-right direction. In this case, the first boom in front view or rear view is viewed by the parallel quadruple link mechanism. 10 and the third boom 12, the arm 13, and the bucket 14 are not changed in angle, and are offset while maintaining a parallel state.

  The lower rotating shaft 15 that connects the first boom 10 and the second boom 11 and the upper rotating shaft 16 that connects the second boom 11 and the third boom 12 are respectively connected to the respective axis extension lines O ·. P is arranged so as to be parallel to each other, and when the first boom 10 is lifted to the maximum extent, the lower rotating shaft 15 has the arm 13 direction side of the lower rotating shaft 15 more than the opposite direction side. (In the present embodiment, the front portion of the lower rotation shaft 15 is positioned higher than the rear portion). The canopy 7 that covers the upper side of the driver's seat 6 is supported by a front column 7a and a rear column 7b. The rear column 7b is erected substantially vertically, and the front column 7a is inclined to the rear. Has been. And, when viewed from the side, the angle formed by the front support column 7a and the lower rotating shaft 15 is substantially perpendicular.

  The bucket 14 lifts the first boom 10 of the backhoe device 5 as much as possible, and does not interfere with the operating unit 9 in a side view when the arm 3 and the bucket 4 are maximally retracted without being offset. It is configured. In addition, since the angle formed by the lower rotating shaft 15 and the front strut 7a of the canopy 7 is configured to be substantially a right angle, even when the bucket 14 is offset to the left and right, the bucket 14 remains at the front strut. The bucket 14 does not interfere with the operation unit 9 by moving substantially parallel to 7a.

  In addition, the first boom 10 and the second boom 11 are configured to be inclined rearward in a state in which the first boom 10 is lifted to the maximum. The amount of forward protrusion of the third boom 12, the arm 13, and the bucket 14 to be connected is reduced. Furthermore, when the first boom is lifted to the maximum extent, the standing angle of the second boom 11 with respect to the ground is configured to be larger than the standing angle of the first boom 10. It is erected vertically.

Next, the internal configuration of the operation unit 9 will be described.
As shown in FIG. 3 and FIG. 4, the outer portion of the operation unit 9 is formed with an entrance 27 for an operator to get on and off, and various operation pedals are provided in front of the floor surface 25 of the operation unit 9. 58 and an operation lever 59 are provided. Further, an inner side surface 9a is formed on the inner side of the driver seat 6, and a lower end portion of the inner side surface 9a is provided with a discharge hole 65 that communicates the inside of the driving unit 9 and the outside of the driving unit 9; The lower end of the discharge hole 65 is in contact with the floor surface 25. In addition, the present ultra-small turning work machine includes a plurality of operation patterns of the operation lever 59 for operating the backhoe device 5, and one of the plurality of operation patterns is appropriately selected to select the backhoe device 5. It is configured to perform operations. And the operation pattern nameplate 35 for showing the operation pattern currently selected is affixed on the said inner surface 9a of the driving | operation part 9. FIG. An anti-slip member 28 formed of a rigid member such as a casting is attached to the corner portion 25a of the floor surface 25 at the entrance 27 by fixing the fixing portion 28a to the floor surface 25 with bolts.

  Further, a floor mat 26 made of a rubber-like member or a resin member is laid on the floor surface 25, and the floor mat 26 is a front portion of the floor surface 25 on which an operation pedal 58 and an operation lever 59 are disposed. It is divided into a pedal part mat 26a disposed on the foot and a foot lower mat 26b disposed behind the pedal part mat 26a on the operator's foot. The lower foot mat 26b is formed in a substantially rectangular shape in which the front side and the rear side are substantially parallel, or formed in a substantially trapezoidal shape in which the distance between the front side and the rear side increases from the inside to the outside. Thus, the foot lower mat 26b laid on the floor surface 25 can be easily extracted outward, and the extracted foot lower mat 26b can be easily attached to the floor surface 25.

  As described above, the floor mat 26 is divided into the pedal portion mat 26a and the foot lower mat 26b, and the foot lower mat 26b can be easily attached and detached. When performing the cleaning, the foot lower mat 26b can be easily extracted from the floor surface 25, and the cleaning operation can be performed easily and efficiently. In addition, since the inner surface 9a of the operation unit 9 is formed with a discharge hole 65 that is in contact with the floor surface 25 and communicates with the outside of the operation unit 9, the sand or the like accumulated on the floor surface 25 is washed with water, for example. In this case, water can be ejected from the hose from the entrance / exit 27 side to allow earth and sand to flow in the direction of the inner surface 9a and be easily discharged out of the operating portion 9 from the discharge hole 65. In this way, the floor mat 26 and the floor surface 25 can be easily cleaned.

  As shown in FIGS. 5 and 6, the anti-slip member 28 has a fixed portion 28a fixed to the floor surface 25 with bolts, and is formed in an approximately L shape with an upper portion 28c and a lower portion 28d. The corner 25a of the floor surface 25 is covered. Further, a large number of anti-slip pieces 28b, 28b,... Protrude from the upper surface of the anti-slip member 28 so that the foot does not slip when an operator getting on and off places his / her foot on the anti-slip member 28. is doing. The anti-slip pieces 28b, 28b,... Are positioned at the corners 25a of the floor surface 25 where the operator actually gets on and off, so that the anti-slip effect can be reliably achieved. Further, since the anti-slip member 28 is made of a member such as a casting having rigidity, the stability when the operator puts his or her foot is good. Furthermore, since the anti-slip member 28 is formed in a substantially L shape with the upper portion 28c and the lower portion 28d, it can be attached to the corner portion 25a of the floor surface 25 without difficulty.

  Further, the upper portion 28 c of the anti-slip member 28 enters inward from the corner portion 25 a of the floor surface 25, and a gap is formed between the upper portion 28 c and the floor surface 25. Then, the outer end surfaces of the pedal portion mat 26a and the foot portion mat 26b of the floor mat 26 abut on the inner end surface of the upper portion 28c of the anti-slip member 28, and between the upper portion 28c of the anti-slip member 28 and the floor surface 25. An engaging piece 26c protruding outward from the lower part of the outer end surface of the pedal part mat 26a and the foot part mat 26b is fitted into the gap.

  Thus, the pedal portion mat 26a and the foot lower mat 26b are prevented from shifting outwardly by the outer end surfaces of the pedal portion mat 26a and the foot lower mat 26b coming into contact with the inner end surface of the upper portion 28c of the anti-slip member 28. Then, by fitting the locking piece 26c into the gap between the upper portion 28c of the anti-slip member 28 and the floor surface 25, the locking piece 26c is locked to the upper portion 28c of the anti-slip member 28, The pedal portion mat 26a and the foot lower mat 26b are prevented from turning up. The lower portion 28d of the anti-slip member 28 can be formed by bending the lower end portion inward as shown in FIG.

  As described above, the anti-slip member 28 has an anti-slip effect and also acts as a presser member that prevents the floor mat 26 from falling off, and it is not necessary to provide a separate presser member for the floor mat 26. This simplifies and reduces costs. Moreover, since the outer slip prevention member 28 is comprised by the rigid member and is provided in the floor surface 25 corner part of the entrance / exit 27, it can show | play the antiskid effect reliably and stably.

  Here, the operation pattern of the operation lever 59 that drives the backhoe device 5 may be different for each manufacturer that manufactures the ultra-small turning work machine. And so that an operator accustomed to the operation of an ultra-small turning work machine having an operation pattern different from that of the ultra-small turning work machine can operate with an operation pattern used when using the ultra-small turning work machine, A plurality of operation patterns of the operation lever 59 are provided, and one of the plurality of operation patterns can be selected and switched. This ultra-small turning work machine has, for example, four types of operation patterns. As shown in FIG. 8, each operation pattern A, B, C, and D is listed on the operation pattern nameplate 35. It is displayed. The operation pattern nameplate 35 is made of a magnetic material such as an iron plate. Of the operation patterns A, B, C, and D, the operation pattern currently set (operation pattern A in FIG. 8) is shown in FIG. A magnet sheet 36 as shown is attached. The magnet sheet 36 is formed in a frame shape, and is pasted so as to surround the outer periphery of the displayed operation patterns A, B, C, and D so as to indicate the currently set operation pattern. The magnet sheet 36 is colored in a conspicuous color such as red so that the currently set operation pattern can be recognized at a glance. That is, the magnet sheet 36 is a display that displays the operation pattern in the set state in distinction from other operation patterns.

  As described above, the operation pattern nameplate 35 for displaying a plurality of types of operation patterns of the backhoe device 5 is pasted on the inner side surface 9a of the operation unit 9, and the operation pattern currently set is displayed separately from other operation patterns. By providing the magnet sheet 36 on the operation pattern nameplate, it is possible to recognize at a glance which operation pattern is currently set. Moreover, since the operation pattern nameplate 35 is always affixed to the fixed part of the inner surface 9a of the driving | operation part 9, even if an operator changes, since the part which affixes the magnetic sheet 36 is the same, in which part It is possible to immediately grasp whether the operation pattern is displayed. Furthermore, even when the operation pattern is changed, the display of the operation pattern can be changed by simply moving the magnet sheet 36 on the operation pattern nameplate 35. Therefore, the operation sheet can be changed by a simple operation. No worry about losing 36. Further, since there are only two members for displaying the operation pattern, that is, the operation pattern nameplate 35 and the magnet sheet 36, it is possible to configure at a low cost.

It is a side view which shows the ultra small turning working machine of this invention. Similarly it is a rear view. It is a top view which shows an operation part. It is a perspective view which shows the driving | running part of the state which has not similarly mounted | worn the anti-slip | skid member and the floor mat. It is rear surface sectional drawing which shows the part of the fixing | fixed part of a non-slip member. It is a rear surface sectional view similarly showing parts other than the fixed part of a non-slip | skid member. It is a rear view which shows another Example of a non-slip | skid member. It is a front view which shows the nameplate and indicator for showing the operation pattern of a backhoe apparatus. It is a perspective view which similarly shows a display. It is a side view which shows the conventional super small turning working machine. It is rear surface sectional drawing which shows the anti-slip | skid member and floor mat in the conventional super small turning working machine. It is rear surface sectional drawing which similarly shows the example of a conventional structure. It is rear surface sectional drawing which similarly shows the example of a conventional structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Traveling device 4 Swivel base 5 Backhoe device 7 Canopy 7a Front support | pillar 8 Turning diameter 9 Operation part 10 1st boom 11 2nd boom 12 3rd boom 13 Arm 14 Bucket (working attachment)
25 Floor surface 25a Corner portion 26 Floor mat 26a Pedal portion mat 26b Foot lower portion mat 27 Entrance / exit door 28 Non-slip member 28a Fixed portion 28b Non-slip piece 28c Upper portion 28d Lower portion 35 Operation pattern name plate 36 Magnet sheet (display)
65 discharge hole

Claims (1)

  A first boom that is pivotably mounted on the lateral side of the operating unit of the swivel base, a second boom that is pivotally mounted on the distal end of the first boom, and a left-right direction on the second boom A second boom that is pivotably attached to the third boom, an arm that is pivotally attached to the third boom so as to be pivotable in the vertical direction, and a work attachment that is attached to the tip of the arm. In the ultra-small turning work machine configured to be capable of offsetting the work attachment in the left-right direction by turning in the left-right direction, the floor mats are provided with the floor mats laid on the floor surface of the operating unit. Divided into a pedal part mat disposed in the portion and a foot mat disposed in the rear of the pedal part mat, and a discharge hole that is in contact with the floor surface is opened on the inner side surface of the driving unit room. thing Ultra-small swivel working machine, characterized.

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