JP2007062598A - Construction machinery - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve assembling work efficiency, productivity, etc. by providing an antislipping part at the position of a doorway on a floor member without increasing the number of parts. <P>SOLUTION: This construction machinery is constituted by providing a side cover 18 to cover the left side of the floor member 6 and integrally molding the antislipping part 18C to prevent slipping of a foot put on in getting on and off a driver's seat 11 through the doorway 10 on this side cover 18. Consequently, it is possible to arrange the antislipping part 18C at the position of the doorway 10 only by work to mount the side cover 18 on the floor member 6. Accordingly, it is possible to eliminate mounting work such as bolting, welding, adhesion, etc. and to restrain increase of the number of the parts. Additionally, it is possible to easily mold the side cover 18 by using resin molding work. Furthermore, it is possible to improve durability by using fiber reinforced plastics, etc. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a construction machine suitable for use as, for example, a small hydraulic excavator or a hydraulic crane.

  In general, a construction machine such as a hydraulic excavator is provided with a self-propelled lower traveling body, an upper revolving body that is turnably mounted on the lower traveling body, and a front and rear side of the upper revolving body that can be moved up and down. It is roughly constituted by the working device.

  The upper swing body includes a swing frame that forms a support structure, a driver seat that is provided on the swing frame and on which an operator sits, and a footrest plate that is positioned on the front side of the driver seat and on which the operator's feet are placed. And a floor member. Further, of the left and right directions of the footrest plate of the floor member, for example, the left end portion where the driver's seat is placed is an entrance for an operator to get on and off the floor member.

  Then, when the operator gets on the driver's seat, the operator, for example, gets on the crawler track that constitutes the lower traveling body, and gets on the footrest board of the floor member with the foot on the entrance / exit from this crawler belt. ing.

  Here, the hydraulic excavator sometimes performs work in a muddy ground or the like, and muddy mud adheres to the shoe sole of the operator at such a work site. Thereby, when the operator gets on and off the driver's seat, his / her foot may slip.

  Therefore, some hydraulic excavators are provided with a step for putting a foot on when getting on and off to a position one step below the floor member, and this step is provided with a non-slip means so that the hung foot does not slip. (For example, refer to Patent Document 1 and Patent Document 2).

JP 2000-291069 A JP 2004-124511 A

  By the way, the hydraulic excavator according to the inventions of Patent Documents 1 and 2 described above is provided with an intermediate step for setting a foot at the time of getting on and off at a position lowered by one step from the floor member, and a non-slip means is provided at this step. For this reason, since it is necessary to provide a step separately at a position different from the entrance / exit and to provide a non-slip means at this step, the number of parts required to provide the non-slip means increases, resulting in assembly work. There is a problem that it causes a decrease in performance and an increase in manufacturing cost.

  The present invention has been made in view of the above-described problems of the prior art, and an object of the present invention is to improve assembly workability and the like by providing a non-slip portion at the entrance of the floor member without increasing the number of parts. It is to provide such a construction machine.

  A construction machine according to the present invention comprises a self-propelled lower traveling body, an upper revolving body that is turnable on the lower traveling body, and a work device that is provided on the upper revolving body so as to be able to be lifted and lowered. The upper swing body includes a swing frame that forms a support structure, a driver seat that is provided on the swing frame and on which an operator sits, and a footrest plate that is positioned in front of the driver seat and on which an operator's feet are placed. A floor member, and at least one side end portion in the left and right directions of the footrest plate of the floor member serves as a boarding / alighting opening for getting on and off the floor member.

  In order to solve the above-mentioned problem, the feature of the configuration adopted by the invention of claim 1 is that the floor member is provided with an exterior cover that covers a side portion where the entrance is located, and the exterior cover is provided on the exterior cover. The present invention has a configuration in which a non-slip portion for stopping slipping of the foot when getting on and off the floor member is integrally formed.

  According to the invention of claim 2, the exterior cover includes a side plate portion that covers the side surface of the floor member, and an upper surface portion that is formed on the upper surface of the side plate portion and extends along the edge of the footrest plate of the floor member. And the non-slip portion provided in a concavo-convex shape along the upper surface portion, and the exterior cover is formed using a resin material.

  According to the invention of claim 3, the exterior cover is configured to be detachably attached to the floor member.

  According to the first aspect of the present invention, when getting on and off the floor member, a foot is put on the exterior cover provided at the position of the entrance and exit. Since this exterior cover is provided with a non-slip portion, it is possible to get on and off the floor member without sliding the foot. In this case, since the non-slip portion is integrally formed with the exterior cover, the exterior cover provided with the anti-slip portion can be formed by almost the same molding process as that for molding the exterior cover. As a result, the mounting work of the anti-slip part can be omitted while suppressing an increase in the number of parts, so the anti-slip part can be easily provided at the entrance / exit, and the assembly workability can be improved and the production cost can be reduced. it can.

  According to the invention of claim 2, the non-slip portion can be integrally formed with the exterior cover by molding the exterior cover including the side plate portion, the upper surface portion, and the non-slip portion using the resin material. Thereby, it can manufacture simply and cheaply using a resin material. Further, the anti-slip portion made of a resin material does not have to worry about rusting, and the shape can be easily changed, so that an optimal anti-slip effect can be obtained.

  According to the invention of claim 3, by attaching the exterior cover to the floor member, the anti-slip portion can be easily provided at the position of the entrance / exit. On the other hand, it can be easily replaced by removing the exterior cover.

  Hereinafter, as a construction machine according to an embodiment of the present invention, a canopy-spec hydraulic excavator provided with an offset working device will be described as an example, and will be described in detail with reference to FIGS.

  In FIG. 1, reference numeral 1 denotes a canopy-type hydraulic excavator as a construction machine. The hydraulic excavator 1 includes a self-propelled lower traveling body 2 and an upper revolving body 3 that is rotatably mounted on the lower traveling body 2. And an offset type working device 4 provided on the front side of the upper swing body 3 so as to be able to be lifted and lowered at an intermediate position between the left and right sides. The lower traveling body 2 is configured as a crawler traveling body in which a crawler belt 2C is wound between a driving wheel 2A and an idle wheel 2B.

  In addition, the working device 4 includes a lower boom 4A whose base end side is supported on the front side of a revolving frame 5 which will be described later, and an upper boom connected to the distal end of the lower boom 4A so as to swing left and right. 4B, an arm support member 4C connected to the front end of the upper boom 4B so as to swing left and right, and an arm 4D connected to the front end of the arm support member 4C so as to be rotatable upward and downward. A bucket 4E rotatably attached to the tip of the arm 4D, a boom cylinder 4F, an arm cylinder 4G, and a bucket cylinder 4H are roughly configured. In addition, a link mechanism 4J is provided between the tip of the lower boom 4A and the arm support member 4C to hold the arm 4D in parallel with the lower boom 4A.

  Then, the work device 4 translates (offsets) the arm 4D in the left and right directions with respect to the lower boom 4A, and rotates the arm 4D and the bucket 4E while moving the lower boom 4A up and down in this state. Etc. can be excavated.

  On the other hand, the upper turning body 3 is formed in a substantially circular shape when viewed from above so that it can turn substantially within the vehicle width of the lower traveling body 2. The upper swing body 3 is roughly constituted by a swing frame 5, an engine (not shown), a floor member 6, a driver's seat 11, an exterior cover 17, a side cover 18 and the like which will be described later.

  Reference numeral 5 denotes a substantially circular swivel frame that forms a support structure, and an engine is mounted on the rear side of the swivel frame 5 in a horizontally placed state extending in the left and right directions. Further, the revolving frame 5 is provided with a control valve, a hydraulic oil tank, a fuel tank (all not shown) and the like.

  Reference numeral 6 denotes a floor member, and the floor member 6 is provided on the left side of the revolving frame 5 so as to be located on the front side of the engine. The floor member 6 is configured such that the rear side can be tilted up and tilted down (can be tilted) with a floor front support portion 15, which will be described later, provided at the front side portion as a support point. Further, as shown in FIG. 3, the floor member 6 is roughly constituted by a footrest plate 7, a lever / pedal mounting plate 8, and a driver seat base 9 described later.

  Reference numeral 7 denotes a footrest plate provided on the front side of a driver seat 11 which will be described later. The footrest plate 7 is for placing an operator's foot seated on the driver seat 11 and is laid at the foot. Moreover, the footrest board 7 consists of a substantially rectangular plate that is long in the left and right directions, and its left edge is formed in an arc shape as shown in FIGS. A rear mounting plate 7A is provided on the left edge of the footrest plate 7 at the rear, and a screw hole 7A1 is formed in the rear mounting plate 7A. Further, an L-shaped intermediate bracket 7B is provided at an intermediate position in the front and rear directions of the footrest plate 7, and a screw hole 7B1 is formed in the intermediate bracket 7B.

  Reference numeral 8 denotes a lever / pedal attachment plate attached to the front end of the footrest plate 7. The lever / pedal mounting plate 8 is formed as a plate extending in the left and right directions, and the left side thereof is inclined rightward toward the front so as to be continuous with the left arc of the footrest plate 7. The lever / pedal mounting plate 8 is provided with a traveling lever / pedal 12 and the like which will be described later.

  Further, a front building mounting plate 8A is attached to the front end of the lever / pedal mounting plate 8, and the front building mounting plate 8A is rotatable to the front side of the revolving frame 5 via a floor front support portion 15 described later. It is supported. On the other hand, a front portion of a canopy 14 described later is attached to the upper side of the front building attachment plate 8A. Further, a front bracket 8B extending downward is provided on the left end side of the front building mounting plate 8A, and a screw hole 8B1 is formed in the front bracket 8B.

  Reference numeral 9 denotes a driver seat base that is provided on the rear side of the footrest plate 7 and supports the driver seat 11. The driver seat pedestal 9 is formed in a step shape in which the rear side becomes higher in order to allow the engine or the like to enter the lower side. The rear side of the driver seat pedestal 9 is a rear building mounting plate 9A, and a rear portion of a canopy 14 described later is mounted on the rear building mounting plate 9A.

  On the other hand, a side cover 18 (described later) is detachably bolted to a rear mounting plate 7A, an intermediate bracket 7B, and a front bracket 8B of the lever / pedal mounting plate 8 provided on the left side of the floor member 6. Is done.

  Here, reference numeral 10 denotes a boarding / exit opening provided at the left end of the footrest plate 7 of the floor member 6. This entrance / exit 10 constitutes an entrance / exit of the footrest plate 7 where the operator first puts his / her foot when getting on the floor member 6 and finally gets his / her foot when getting off the floor member 6. More specifically, the entrance 10 is defined at the left end portion on the footrest plate 7 of the floor member 6 between the driver's seat 11 and the travel lever pedal 12.

  Reference numeral 11 denotes a driver seat (see FIGS. 1 and 2) provided on a driver seat base 9 of the floor member 6, and the driver seat 11 is seated by an operator. A traveling lever / pedal 12 is disposed on the front side of the driver's seat 11, and a working lever 13 (only the left side is illustrated) is disposed on both the left and right sides of the driver's seat 11.

  Reference numeral 14 denotes a canopy as a building provided on the floor member 6. The canopy 14 covers the upper side and the right side of the driver's seat 11. Further, the canopy 14 is roughly configured by a right side surface portion 14A that covers the driver seat 11 from the right side and an upper surface portion 14B that covers the driver seat 11 from above. The canopy 14 is configured as a three-column canopy having a right front pillar 14C, a left rear pillar 14D, and a right rear pillar (not shown).

  The canopy 14 is attached to the front building mounting plate 8A of the lever / pedal mounting plate 8 that constitutes the floor member 6 with the right front pillar 14C, and the left rear pillar 14D and the right rear pillar are mounted on the rear building of the driver seat base 9. It is attached to the plate 9A.

  Reference numeral 15 denotes two sets of front floor support portions (see FIG. 3) provided at the front portion of the floor member 6. The front floor support portion 15 supports the front portion of the floor member 6 at the front end portion of the revolving frame 5 so as to be tiltable, and is spaced apart in the left and right directions. The two sets of front floor support portions 15 are attached to the support base 15A attached to the front portion of the revolving frame 5 and the front building attachment plate 8A of the lever / pedal attachment plate 8 so as to sandwich the support base 15A. The mounting bracket 15B includes two mounting brackets 15B and pins 15C that rotatably connect the mounting brackets 15B to the support base 15A.

  Accordingly, each floor front support portion 15 can tilt the floor member 6 and the canopy 14 upward or frontward, or tilt down or rearward with the pin 15C as a support point.

  Reference numeral 16 denotes a counterweight provided at the rear end portion of the revolving frame 5 (see FIG. 1). The counterweight 16 balances the weight with the work device 4. The counterweight 16 has a convex curved shape that is curved in an arc shape and extends in the left and right directions, and covers equipment such as an engine together with an exterior cover 17 and the like described later.

  Reference numeral 17 denotes an exterior cover provided around the upper swing body 3. The exterior cover 17 includes a left rear cover 17A that covers the left front side of the counterweight 16, and a swivel frame 5 that extends from the lower front side of the left rear cover 17 A. A left skirt cover 17B that covers the left side, an engine cover 17C that covers the rear side of the engine, a right skirt cover that covers the right side of the turning frame 5, a tank cover that covers the right hydraulic oil tank, fuel tank, etc. 2) and a side cover 18 which will be described later.

  Next, 18 is a side cover provided on the left side of the floor member 6 where the entrance 10 is located, and the side cover 18 forms a part of the exterior cover 17. Further, as shown in FIGS. 1 and 2, the side cover 18 constitutes a decorative cover that covers the footrest plate 7 of the floor member 6 and the left side of the lever / pedal mounting plate 8 so as not to be exposed to the outside. . Accordingly, as shown in FIGS. 4 and 5, the side cover 18 is formed to be curved in an arc shape along the left end edge of the footrest plate 7 and the lever / pedal mounting plate 8 formed in an arc shape. Has been. Further, since the side cover 18 is disposed at the position of the entrance 10 that is stepped on when getting on and off the driver's seat 11, even if the side cover 18 is repeatedly stepped on by an operator, a high-strength material, for example, glass fiber is not easily damaged. It is molded using fiber-reinforced plastic such as polypropylene.

  The side cover 18 is curved in an arc along the left side surface of the footrest plate 7 and the lever / pedal mounting plate 8 of the floor member 6 to cover the left side surface of the footrest plate 7 and the lever / pedal mounting plate 8. A side plate 18A, a narrow upper surface 18B extending from the upper surface of the side plate 18A on the footrest plate 7 and the lever / pedal mounting plate 8 to the right (inside the arc), and the upper surface 18B And a non-slip portion 18C provided in a concavo-convex shape.

  Further, a screw seat 18D that is recessed in a circular shape is formed on the side plate portion 18A of the side cover 18 at a rear position corresponding to the screw hole 7A1 provided in the rear mounting plate 7A of the footrest plate 7. . A screw seat 18E that is recessed in a circular shape is formed at a position corresponding to the screw hole 7B1 provided in the intermediate bracket 7B of the footrest plate 7 in the middle of the side plate portion 18A. Further, a screw seat 18F that is recessed in a U-shape is formed at the front end of the side plate 18A at a position corresponding to the screw hole 8B1 provided in the front bracket 8B of the lever / pedal mounting plate 8.

  Furthermore, the non-slip portion 18C provided integrally with the upper surface portion 18B of the side cover 18 prevents the foot hung when it gets on and off the floor member 6 through the entrance 10 from mud or the like. is there. Accordingly, the non-slip portion 18C is disposed at a position where the foot naturally catches when getting on and off, that is, in the middle of the side cover 18 in the longitudinal direction, in the front and rear ranges corresponding to the entrance 10. .

  The non-slip portion 18 </ b> C is provided in an uneven shape along the upper surface portion 18 </ b> B of the side cover 18. That is, the non-slip portion 18C is composed of a plurality of convex portions 18C1 arranged along the upper surface portion 18B, and concave portions 18C2 arranged between the convex portions 18C1. Thereby, even when the shoe sole is wet and slippery, the anti-slip portion 18C can prevent the hung foot from slipping by engaging each convex portion 18C1 with the shoe sole. Further, the plurality of convex portions 18C1 can be engaged with a shoe sole that is about to skid by having the concave portions 18C2 between the convex portions 18C1.

  Here, since the side cover 18 is formed by integrally molding the side plate portion 18A, the upper surface portion 18B, and the anti-slip portion 18C using a resin material, for example, compared with a case where the anti-slip portion is provided separately. In addition, mounting work such as bolting, welding, and bonding can be omitted. Further, the anti-slip portion 18C formed using the resin material does not generate rust unlike when formed from a metal material.

  When the side cover 18 is attached to the floor member 6, as shown in FIGS. 2 and 3, the side cover 18 is attached to the left side edge of the footrest plate 7 and the lever / pedal attachment plate 8 constituting the floor member 6. Arrange along. In this state, the bolt 19 inserted through the screw seat 18D of the side cover 18 is screwed into the screw hole 7A1 provided in the rear mounting plate 7A of the footrest plate 7, and the bolt 19 inserted through the screw seat 18E is attached to the intermediate bracket. The bolt 19 screwed into the screw hole 7B1 of 7B and inserted through the screw seat 18F is screwed into the screw hole 7B1 provided in the front bracket 8B of the lever / pedal mounting plate 8.

  Thereby, the side cover 18 can be attached to a position covering the left side surface portion of the floor member 6, and the non-slip portion 18 </ b> C of the side cover 18 is located on the left end of the footrest plate 7 which is the position of the entrance 10. It can arrange in a part.

  In FIG. 2, reference numeral 20 denotes a front cover attached to the front portion of the lever / pedal mounting plate 8 of the floor member 6. The front cover 20 covers the floor front support portion 15 and the like. Reference numeral 21 denotes a floor mat provided so as to cover the footrest plate 7 and the lever / pedal mounting plate 8 from above.

  The hydraulic excavator 1 according to the present embodiment has the above-described configuration, and the operation thereof will be described next.

  First, when getting on the floor member 6, the operator gets on the crawler belt 2C of the lower traveling body 2 and is located on the left side of the upper swing body 3 provided with the entrance 10 and from the crawler belt 2C, Get on the footrest 7 and sit on the driver's seat 11. At this time, the operator puts his / her foot on the side cover 18 provided on the left side of the floor member 6 in a natural getting-on / off operation through the entrance / exit 10. Since the side cover 18 is provided with an uneven non-slip portion 18C, the operator can get on the floor member 6 without sliding his / her foot by engaging the shoe sole with the non-slip portion 18C. Can do. It is also possible to get off the floor member 6 without sliding the foot.

  An operator seated in the driver's seat 11 can drive the lower traveling body 2 by operating the traveling lever / pedal 12. Further, by operating the working lever 13, the working device 4 can be moved up and down to perform excavation work of earth and sand.

  As described above, according to the present embodiment, the side cover 18 that covers the left side of the floor member 6 is provided, and the side cover 18 has feet that are hung when getting on and off the driver's seat 11 through the entrance 10. A non-slip portion 18C that prevents sliding is integrally formed. Therefore, the non-slip portion 18 </ b> C can be disposed at the position of the entrance / exit 10 only by attaching the side cover 18 to the floor member 6.

  As a result, for example, compared with the case where a non-slip part is provided separately, mounting work such as bolting, welding, and adhesion can be omitted, and an increase in the number of parts can be suppressed. Improvement and reduction of production cost can be achieved.

  Further, since the side cover 18 including the side plate portion 18A, the upper surface portion 18B, and the anti-slip portion 18C is formed by resin molding, it can be easily molded using resin molding. Further, by using fiber reinforced plastic or the like as the resin material, it is possible to obtain a strength that is difficult to be damaged even if it is repeatedly stepped on by an operator, and durability can be improved. In addition, the anti-slip portion 18C made of a resin material does not generate rust unlike the case of being formed from a metal material, and can improve the appearance. Further, the shape can be easily changed, and an optimum anti-slip effect can be obtained.

  Furthermore, since the side cover 18 is configured to be detachably attached to the floor member 6 using bolts 19, the side cover 18 can be easily attached to the floor member 6. Further, the side cover 18 can be easily replaced by loosening the bolts 19.

  In the embodiment, the offset hydraulic excavator 1 including the offset working device 4 as a construction machine has been described as an example. However, the present invention is not limited to this, and can also be applied to a swing-type hydraulic excavator provided with a swing-type working device 32, such as a hydraulic excavator 31 according to a modification shown in FIG.

  That is, the working device 32 provided on the swing type hydraulic excavator 31 is attached to the tip of the swing frame 33 so as to be swingable left and right, and attached to the swing post 32A so as to be able to move up and down. The boom 32B, the arm 32C attached to the boom 32B, the bucket 32D attached to the arm 32C, and the cylinders 32E, 32F, and 32G are roughly configured.

  In the embodiment, the case where the side cover 18 is formed by molding using a resin material such as fiber reinforced plastic has been described as an example. However, the present invention is not limited to this. For example, the side cover may be formed using a metal material such as an aluminum alloy.

  Moreover, in embodiment, the case where the left end part of the footrest board 7 of the floor member 6 was used as the entrance / exit 10 for getting on / off the floor member 6 was demonstrated as an example. However, the present invention is not limited to this. For example, the present invention may be applied to a hydraulic excavator provided with an entrance on the right side of the floor member. Further, as shown in Japanese Patent Laid-Open No. 4-30032, the present invention may be applied to a hydraulic excavator provided with entrances on both the left and right sides of the floor member.

  Furthermore, in the embodiment, a hydraulic excavator 1 including a crawler type lower traveling body 2 is described as an example of a construction machine. However, the present invention is not limited to this, and can be applied to other construction machines such as a hydraulic excavator and a hydraulic crane including a wheel-type lower traveling body.

1 is a front view showing an offset hydraulic excavator according to an embodiment of the present invention. It is a perspective view of the principal part expansion which shows a floor member, a side cover, etc. It is a disassembled perspective view shown in the state which decomposed | disassembled the floor member and the side cover. It is an expansion perspective view which shows the side cover in FIG. 3 alone. It is a top view which shows a side cover alone. It is a front view which shows the swing type hydraulic excavator by the modification of this invention.

Explanation of symbols

1,31 Hydraulic excavator (Construction machinery)
DESCRIPTION OF SYMBOLS 2 Lower traveling body 3 Upper revolving body 4,32 Working device 5,33 Turning frame 6 Floor member 7 Footrest board 10 Boarding gate 11 Driver's seat 17 Exterior cover 18 Side cover (exterior cover)
18A Side plate 18B Top 18C Non-slip 18C1 Convex 18C2 Concave 19 Bolt

Claims (3)

A self-propelled lower traveling body, an upper revolving body provided so as to be able to turn on the lower traveling body, and a working device provided so as to be able to be lifted and lowered on the upper revolving body,
The upper swing body includes a swing frame that forms a support structure, a driver seat on the swing frame on which an operator is seated, and a footrest plate that is positioned on the front side of the driver seat and on which an operator's feet are placed. A construction machine comprising at least one side end in the left and right directions of the footrest plate of the floor member serving as an entrance for getting on and off the floor member,
The floor member is provided with an exterior cover that covers a side portion where the entrance is located,
A construction machine characterized in that the exterior cover is integrally formed with a non-slip portion for stopping slipping of the foot when getting on and off the floor member.   The exterior cover includes a side plate portion that covers a side surface of the floor member, an upper surface portion that is formed on an upper surface of the side plate portion and extends along an edge of the footrest plate of the floor member, and an unevenness along the upper surface portion. The construction machine according to claim 1, wherein the exterior cover is formed by using a resin material.   The construction machine according to claim 1, wherein the exterior cover is configured to be detachably attached to the floor member.

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