JP4537289B2 - Construction machinery - Google Patents

Description

  The present invention relates to a construction machine such as a hydraulic excavator or a hydraulic crane, and more particularly to a construction machine in which a floor mat is provided on a floor plate.

  In general, a construction machine such as a hydraulic excavator or a hydraulic crane has a self-propelled lower traveling body, an upper revolving body mounted on the lower traveling body so as to be able to swivel, and an uplifting movement to the front side of the upper revolving body. It is roughly constituted by a working device that can be provided.

  Here, the upper swing body includes a swing frame forming a support structure, a floor member having a driver seat and a floor plate portion provided on the swing frame, a canopy that covers the driver seat of the floor member from above, It is generally constituted by a floor mat provided on the floor plate portion of the floor member.

  The floor mat prevents slipping when the operator gets on and off the driver's seat using the floor plate portion as a foothold, receives mud falling from the operator's shoes seated on the driver's seat, and the dirt such as mud is a floor member. (See, for example, Patent Document 1).

JP 2004-149040 A

  By the way, the floor mat according to the prior art is usually formed in a flat plate shape using a flexible material such as rubber, and an opening is provided at a position corresponding to the lever / pedal device arranged on the front side of the driver's seat. ing. The floor mat is placed on the upper surface of the floor plate portion with the opening being inserted through the lever / pedal device, and covers the floor plate portion.

  As described above, the floor mat according to the prior art is simply placed on the upper surface of the floor plate portion, so that the work of attaching the floor mat to the floor plate portion can be easily performed at the time of cleaning the floor mat. There is a problem that the floor mat is easily displaced with respect to the floor plate when the operator gets on and off.

  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 provide a construction machine capable of securely fixing a floor mat to a floor plate portion of a floor member.

  In order to solve the above-described problems, the present invention includes a self-propelled lower traveling body and an upper revolving body that is turnably mounted on the lower traveling body, and the upper revolving body forms a support structure. A floor member having a turning frame, a driver seat provided on the turning frame on which an operator is seated, and a floor plate portion that is positioned in front of the driver seat and serves as a scaffold for the operator, and the driving member attached to the floor member The present invention is applied to a construction machine including a canopy that covers a seat from above and a floor mat provided on a floor plate portion of the floor member.

  A feature of the configuration adopted by the invention of claim 1 is that the canopy is formed of a hollow member having an open end surface and is attached to the front side of the floor member, and is attached to the rear side of the floor member. It is composed of a side mounting member, a plurality of columns that are fixed to the front and rear mounting members and extend upward and downward, and a roof that is mounted on each column and covers the driver's seat. There is provided a fitting portion that fits into the opening end of the front mounting member and fixes the floor mat to the floor member.

  According to a second aspect of the present invention, the floor mat has an opening through which a mat body covering the floor plate portion of the floor member and a lever / pedal device provided on the front side of the mat body and disposed on the front side of the driver seat are inserted. And the fitting portion provided at the front end portion of the mat body and positioned in front of the opening.

  According to a third aspect of the present invention, the front mounting member of the canopy is formed as a cylindrical body having a closed cross-sectional structure, and the fitting portion of the floor mat is provided at a position facing the opening end of the front mounting member. In other words, it is configured as a cylindrical protrusion that is liquid-tightly covered by being fitted to the end.

  According to the first aspect of the present invention, the front side mounting member constituting the canopy is mounted on the front side of the floor member, and the fitting portion of the floor mat is fitted to the opening end of the front side mounting member, whereby the front side mounting member of the canopy The floor mat can be securely fixed to the floor plate portion of the floor member by using. As a result, the displacement of the floor mat with respect to the floor plate portion can be suppressed, the slip when the operator gets on and off the driver's seat can be surely prevented, and mud or the like that has fallen from the operator's shoes can be reliably received by the floor mat. .

  Also, by pulling out the matting part of the floor mat from the opening end of the front mounting member, the floor mat can be easily detached from the floor member, and the workability when attaching / detaching the floor mat during cleaning etc. is improved. Can do.

  According to the invention of claim 2, the opening portion of the floor mat is inserted into the lever / pedal device arranged on the front side of the driver's seat, and the fitting portion of the floor mat is fitted to the opening end of the front mounting member of the canopy. By doing so, the floor mat can be fixed in a state positioned at an appropriate position with respect to the floor member, and the floor plate portion can be reliably covered by the mat body.

  According to the invention of claim 3, the fitting portion of the floor mat is provided at a position facing the opening end of the front mounting member, and is fitted into the opening end so as to cover the liquid-tight lid. By comprising, it can suppress that rainwater etc. penetrate | invade the inside of a front side attachment member, and rust etc. generate | occur | produce, and can maintain the intensity | strength of the canopy containing a front side attachment member over a long term. Further, for example, the number of parts can be reduced as compared with the case where the opening end of the front mounting member is covered using a plug (sealing plug) or the like made of a member different from the floor mat.

  Hereinafter, an embodiment of a construction machine according to the present invention will be described in detail with reference to FIGS. 1 to 8 by taking as an example a case where the construction machine is applied to a hydraulic excavator.

  In the figure, reference numeral 1 denotes a hydraulic excavator. The hydraulic excavator 1 includes a self-propelled crawler-type lower traveling body 2, an upper revolving body 3 that is turnably mounted on the lower traveling body 2, and the upper swivel. It is roughly constituted by an offset type working device 4 provided on the front side of the body 3 so as to be able to move up and down.

  Here, the working device 4 includes a lower boom 4A attached to the front side of a revolving frame 5 described later, an upper boom 4B attached to the distal end side of the lower boom 4A, and an arm attached to the distal end side of the upper boom 4B. A support rod 4C, an arm 4D attached to the distal end side of the arm support 4C, a bucket 4E attached to the distal end side of the arm 4D, and a link rod connecting the lower boom 4A and the arm support 4C 4F, a boom cylinder 4G for rotating (lowering and raising) the lower boom 4A upward and downward, an arm cylinder 4H for rotating the arm 4D, a bucket cylinder 4I for rotating the bucket 4E, and an upper boom 4B on the left, An offset cylinder 4J that swings in the right direction is roughly configured.

  Then, the work device 4 moves the lower boom 4A up and down by the boom cylinder 4G while the upper boom 4B is translated (offset) in the left and right directions with respect to the lower boom 4A by the offset cylinder 4J, and the arm 4D by the arm cylinder 4H. Is rotated, and the bucket 4E is rotated by the bucket cylinder 4I to perform excavation work such as a gutter on the side of the road.

  On the other hand, the upper swing body 3 balances the weight between the swing frame 5 that forms a support structure that is swingably provided on the lower traveling body 2 and the work device 4 that is provided at the rear end of the swing frame 5. It is generally constituted by an outer cover 7 that covers a counterweight 6, a mounted device (not shown) such as an engine and a hydraulic pump mounted on the revolving frame 5, a floor member 8, a canopy 18, a floor mat 28 and the like described later. ing.

  Here, the upper turning body 3 is formed in a substantially circular shape when viewed from above so that it can turn within the vehicle width of the lower traveling body 2 (see FIG. 2). Further, the turning radius of the rear end portion of the upper swing body 3 is defined by the outer surface of the counterweight 6, and the counterweight 6 is as front as possible in order to reduce the turning radius of the rear end portion of the upper swing body 3. It is arranged close to (the working device 4 side).

  8 is a floor member positioned on the front side of the counterweight 6 and disposed on the revolving frame 5. The floor member 8 includes a floor plate portion 9, a lever / pedal mounting plate 10, which will be described later, as shown in FIG. The front canopy mounting plate 11, the driver seat base 12, the rear canopy mounting plate 13, and the like are included.

  Reference numeral 9 denotes a floor plate portion that forms a scaffold for an operator seated in a driver seat 14 to be described later. The floor plate portion 9 is formed in a substantially rectangular flat plate shape elongated in the left and right directions. A floor mat 28 described later is disposed on the upper surface side of the floor plate portion 9. Further, a lever / pedal mounting plate 10 extending in the left and right directions is provided on the front end side of the floor plate portion 9, and a travel for mounting a travel lever / pedal device 16 to be described later is attached to the lever / pedal mounting plate 10. A lever / pedal mounting opening 10A and a pedal mounting opening 10B for mounting an after-mentioned offset pedal device 17 are provided.

  Reference numeral 11 denotes a front canopy mounting plate provided at the front end portion of the lever / pedal mounting plate 10, and the front canopy mounting plate 11 is composed of a strength member bent in an L shape, and is attached to the lever / pedal mounting plate 10. Along the left and right sides. The front canopy mounting plate 11 is configured to be mounted with a front mounting member 19 of a canopy 18 described later.

  Reference numeral 12 denotes a driver seat pedestal provided on the rear side of the floor plate portion 9, and the driver seat pedestal 12 is formed in a box shape that rises upward from the rear side of the floor plate portion 9. On the driver seat base 12, a driver seat 14 to be described later is attached.

  Reference numeral 13 denotes a rear canopy mounting plate provided at the rear end portion of the driver seat pedestal 12, and the rear canopy mounting plate 13 projects substantially horizontally from the rear end portion of the driver seat pedestal 12 to the rear. The rear canopy mounting plate 13 is configured to be mounted with a rear mounting member 20 of a canopy 18 described later.

  Reference numeral 14 denotes a driver seat on which an operator is seated, and the driver seat 14 is mounted on the driver seat base 12 of the floor member 8 described above. As shown in FIGS. 1 and 3, operation lever devices 15 and 15 for operating the work device 4 are provided on both the left and right sides of the driver seat 14. Traveling lever / pedal devices 16, 16 and an offset pedal device 17 are provided.

  Reference numerals 16 and 16 denote left and right traveling lever / pedal devices arranged on the front side of the driver's seat 14, and each traveling lever / pedal device 16 is operated by an operator seated on the driver's seat 14 to travel under the vehicle. It controls the traveling of the body 2. Reference numeral 17 denotes an offset pedal device disposed on the right side of the travel lever / pedal device 16, and the offset pedal device 17 is operated by an operator to expand and contract the offset cylinder 4J of the work device 4 so as to move the upper boom 4B. Offsets left and right.

  Reference numeral 18 denotes a canopy attached to the floor member 8. The canopy 18 covers the driver's seat 14 from above and from the right side. Here, as shown in FIG. 5 and the like, the canopy 18 is configured as a three-post canopy including a front mounting member 19, a rear mounting member 20, which will be described later, each of the columns 21, 22, 24, a canopy roof 25 and the like. ing.

  Reference numeral 19 denotes a front attachment member attached to the front side of the floor member 8. The front attachment member 19 includes a rectangular bottom plate 19A having a rectangular shape extending in the left and right directions, and means such as welding on the upper surface side of the bottom plate 19A. Is formed as a hollow rectangular cylinder having a firm closed cross-sectional structure.

  Here, a lower end portion of a right front support column 21 to be described later is fixed to the right end surface of the front mounting member 19 extending in the left and right directions by welding or the like, and the left end surface of the front mounting member 19 is opened in a square shape. It is the end 19C. The front mounting member 19 is fixed to the front canopy mounting plate 11 of the floor member 8 using a plurality of bolts.

  Reference numeral 20 denotes a rear mounting member that is mounted on the rear side of the floor member 8, and the rear mounting member 20 is formed in a flat plate shape extending in the left and right directions. The lower end portion of the rear column 24 is fixed by welding or the like. The rear mounting member 20 is fixed to the rear canopy mounting plate 13 of the floor member 8 using a plurality of bolts.

  Reference numeral 21 denotes a right front strut that is fixed to the right end side of the front mounting member 19 by welding or the like and extends downward, and the right front strut 21 is formed using, for example, a pipe material or the like. Here, the upper end side of the right front column 21 is a curved portion 21A that is curved in an L shape toward the rear.

  Reference numeral 22 denotes a right rear strut which is fixed to the right end side of the rear mounting member 20 by welding or the like and extends downward, and the right rear strut 22 is formed using, for example, a pipe material or the like, and the upper end side thereof is a front end. The curved portion 22A is curved in an L shape toward the head. The curved portion 21A of the right front support column 21 and the curved portion 22A of the right rear support column 22 are joined at the joint portion 23 by means of welding or the like, and the right front support column 21 and the right rear support column 22 are connected to a canopy roof 25 described later. This constitutes a strong frame for mounting the frame.

  Reference numeral 24 denotes a left rear strut which is fixed to the left end side of the rear mounting member 20 by welding or the like and extends upward and downward. The left rear strut 24 is formed using, for example, a pipe material or the like, and a lower end portion is located on the rear side. It is fixed to the mounting member 20, and the upper end is fixed to the curved portion 22 </ b> A of the right rear column 22.

  Reference numeral 25 denotes a canopy roof attached to the right front column 21 and the right rear column 22. The canopy roof 25 is formed using a thin steel plate or the like, and a canopy portion 25A that covers the driver's seat 14 from above, and the driver's seat 14 And a right side wall portion 25B that covers from the right side.

  Reference numeral 26 denotes a guard member (handrail) fixed to the right front column 21 and the like, and the guard member 26 is configured by a pipe material or the like bent in a U-shape, and left from the right front column 21 along the front mounting member 19. , Extends rightward. The guard member 26 protects the driver's seat 14 and the like from the front, and a lighting device 27 for night work is attached to the right end side of the guard member 26.

  28 is a floor mat provided on the floor plate portion 9 of the floor member 8, and the floor mat 28 is, as shown in FIGS. 4, 6 to 8, etc., a mat main body 29 to be described later, each of the openings 30, 31, It is configured by the fitting portion 32 and the like, and is integrally formed using, for example, a rubber material. The floor mat 28 prevents slipping when the operator gets on and off the driver's seat 14 using the floor plate portion 9 as a foothold and receives mud or the like that has fallen from the shoes of the operator seated on the driver's seat 14. This prevents dirt from adhering to the floor plate portion 9 and the like.

  Reference numeral 29 denotes a mat body disposed between the front mounting member 19 of the canopy 18 and the driver's seat 14, and the mat body 29 includes a bottom surface portion 29A extending substantially horizontally along the floor plate portion 9 of the floor member 8; It has a jetty portion 29B protruding upward from the rear end edge portion and the right end edge portion of the bottom surface portion 29A. Thereby, when washing water is sprayed on the floor mat 28 disposed on the floor plate portion 9 of the floor member 8, the washing water is prevented from splashing around the bottom surface portion 29A by the jetty portion 29B. The cleaning water can be discharged to the outside from the left end side of the bottom surface portion 29A where 29B is not provided.

  Reference numeral 30 denotes a central opening provided at the front center portion of the mat body 29, through which the travel lever / pedal device 16 is inserted. Reference numeral 31 denotes a right opening provided on the right front side of the mat body 29, and the right opening 31 is inserted into the offset pedal device 17. Here, at the peripheral edge of the central opening 30, a jetty 30A is provided to prevent washing water or the like from flowing below the floor mat 28 through the central opening 30, and at the peripheral edge of the right opening 31, A jetty portion 31 </ b> A is provided so as to prevent the washing water or the like from flowing below the floor mat 28 through the right opening 31.

  When the floor mat 28 is disposed on the floor plate portion 9 of the floor member 8, as shown in FIG. 7, the pilot valve of the traveling lever / pedal device 16 is fitted into the central opening 30, and the right opening 31. The floor mat 28 can be positioned with respect to the floor plate portion 9 by fitting the pilot valve of the offset pedal device 17 to the floor plate 9.

  Reference numeral 32 denotes a fitting portion provided integrally with the front end portion of the mat main body 29. The fitting portion 32 is located on the left front side of the central opening 30 as shown in FIGS. The rising portion 32A rises from the bottom surface portion 29A, and the cylindrical protruding portion 32B protrudes rightward from the right end surface facing the opening end 19C of the front mounting member 19 in the rising portion 32A. And the fitting part 32 utilizes the front side attachment member 19 by fitting the cylindrical protrusion part 32B provided in the position facing the opening end 19C of the front side attachment member 19 to the opening end 19C, The floor mat 28 is securely fixed to the floor member 8.

  Here, as shown in FIG. 8, the cylindrical projecting portion 32B of the fitting portion 32 is fitted to the opening end 19C of the front mounting member 19 facing in the left and right directions, thereby making the opening end 19C liquid. It is configured to cover tightly. Further, as shown in FIG. 7, the rising portion 32 </ b> A of the fitting portion 32 is formed on the outer surface of the front attachment member 19 in a state where the cylindrical protrusion 32 </ b> B is fitted to the opening end 19 </ b> C of the front attachment member 19. Smooth and continuous.

  In this way, the fitting portion 32 provided on the floor mat 28 is fitted to the opening end 19C of the front mounting member 19 and is liquid-tightly covered, so that rainwater or cleaning can be provided inside the front mounting member 19. The structure is such that water or the like can be prevented from entering and rust or the like is generated, and the strength of the canopy 18 including the front mounting member 19 can be maintained over a long period of time. Further, the rising portion 32 </ b> A of the fitting portion 32 is smoothly continuous with the outer surface of the front mounting member 19, whereby the boundary portion between the front mounting member 19 and the fitting portion 32 can be made inconspicuous. ing.

  The hydraulic excavator 1 according to the present embodiment has the above-described configuration, and an operator seated in the driver's seat 14 operates the left and right traveling lever / pedal devices 16 to bring the hydraulic excavator 1 to a desired work place. After self-propelled, by operating the left and right operation lever device 15, the offset pedal device 17, and the like, excavation work such as side grooves can be performed using the work device 4.

  Here, a floor mat 28 is disposed on the floor plate portion 9 of the floor member 8, and the floor mat 28 prevents slipping when the operator gets on and off the driver's seat 14 and also prevents the operator sitting on the driver's seat 14 from slipping. Can receive mud that has fallen from shoes.

  In the present embodiment, after the floor mat 28 to which mud or the like is adhered is washed, workability when the floor mat 28 is attached to the floor member 8 can be improved. 28 will be described.

  First, when the floor mat 28 is attached, the travel lever / pedal device 16 is inserted into the central opening 30 of the floor mat 28 and the offset pedal device 17 is inserted into the right opening 31 as shown in FIG. In this state, the mat body 29 is disposed on the floor plate portion 9 of the floor member 8.

  At this time, the pilot valve of the travel lever / pedal device 16 is fitted into the central opening 30 of the floor mat 28 and the pilot valve of the offset pedal device 17 is fitted into the right opening 31, so that the floor mat 28 is The floor member 8 can be positioned at an appropriate position.

  In this state, as shown in FIG. 7, the cylindrical protrusion 32B of the fitting portion 32 provided on the floor mat 28 faces the opening end 19C of the front mounting member 19 constituting the canopy 18, and the opening end 19C It is made to fit by pushing the cylindrical projection part 32B of the fitting part 32 inside. As a result, in a state where the floor mat 28 is positioned at a position covering the floor plate portion 9 of the floor member 8, the floor mat 28 can be securely fixed to the floor member 8.

  Thus, according to the present embodiment, the hollow front mounting member 19 constituting the canopy 18 is fixed to the front side of the floor member 8, and the opening end 19C of the front mounting member 19 is fitted to the floor mat 28. The portion 32 is configured to be fitted. As a result, the floor mat 28 has a cylindrical opening of the fitting portion 32 in addition to the center opening 30 fitting into the traveling lever / pedal device 16 and the right opening 31 fitting into the offset pedal device 17. The portion 32 </ b> B can be fitted to the open end 19 </ b> C of the front mounting member 19.

  Thereby, the floor mat 28 can be reliably fixed at a position covering the floor plate portion 9 of the floor member 8. Therefore, slipping when the operator gets on and off the driver's seat 14 can be reliably prevented, and mud or the like dropped from the operator's shoes can be reliably received by the floor mat 28.

  On the other hand, when the dirty floor mat 28 is removed and cleaned, the fitting portion 32 (cylindrical protrusion 32B) of the floor mat 28 is elastically deformed and removed from the opening end 19C of the front mounting member 19 to thereby remove the floor mat. 28 can be easily removed from the floor member 8, and workability when the floor mat 28 is attached and detached during cleaning can be improved.

  In addition, the fitting portion 32 provided on the floor mat 28 is fitted to the opening end 19C of the front mounting member 19 and is liquid-tightly covered, so that rain water, washing water, or the like is placed inside the front mounting member 19. Since it is possible to prevent rust and the like from entering, it is possible to maintain the strength of the canopy 18 including the front mounting member 19 for a long period of time.

  Further, for example, compared to the case where the opening end 19C of the front mounting member 19 is covered using a plug (sealing plug) or the like made of a member different from the floor mat 28, this plug or the like can be made unnecessary. Therefore, the number of parts can be reduced. Moreover, as shown in FIG. 7, the rising portion 32 </ b> A of the fitting portion 32 is connected to the front mounting member 19 in a state where the cylindrical protrusion 32 </ b> B of the fitting portion 32 is fitted to the opening end 19 </ b> C of the front mounting member 19. Smoothly continues to the outer surface of the. Thereby, the boundary part of the front side attachment member 19 and the fitting part 32 can be made inconspicuous, and the external appearance quality of the hydraulic shovel 1 can be improved.

  In addition, in embodiment mentioned above, the case where the fitting part 32 was provided in the floor mat 28 formed in the shape of one flat plate using rubber material is illustrated. However, the present invention is not limited to this. For example, the floor mat may be divided into two parts, a front floor mat and a rear floor mat, and a fitting portion may be provided on the front floor mat.

  Moreover, in embodiment mentioned above, the case where the three pillar type canopy 18 provided with the right front support | pillar 21, the right rear support | pillar 22, and the left rear support | pillar 24 is illustrated. However, the present invention is not limited to this. For example, a four-column canopy including four columns including a right front column, a right rear column, a left front column, and a left rear column may be used. On the other hand, for example, a two-column canopy provided with two columns including a right front column and a right rear column may be used.

  Furthermore, in the embodiment described above, the excavator 1 is exemplified as the construction machine. However, the present invention is not limited to this, and can be widely applied to other construction machines such as a hydraulic crane.

1 is a front view showing a hydraulic excavator according to an embodiment of the present invention. It is the top view which looked at the hydraulic excavator from the upper part. It is the left view which looked at the hydraulic excavator which removed the working apparatus from the arrow III-III direction in FIG. It is a disassembled perspective view which shows a floor member, a canopy, and a floor mat. It is a perspective view which shows a canopy alone. It is a perspective view which shows a floor mat alone. It is a perspective view of the principal part expansion which shows the state which fitted the fitting part of the floor mat with the front side attachment member of the canopy. It is a perspective view of the principal part expansion which shows the state before the fitting part of a floor mat is fitted to the front side attachment member of a canopy.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hydraulic excavator 2 Lower traveling body 3 Upper revolving body 5 Revolving frame 8 Floor member 9 Floor board part 14 Driver's seat 16 Driving lever / pedal device 18 Canopy 19 Front mounting member 19C Open end 21 Right front strut 22 Right rear strut 24 Left rear strut 25 Canopy roof 28 Floor mat 29 Mat body 30 Center opening 32 Fitting portion 32B Cylindrical protrusion

Claims (3)

A self-propelled lower traveling body and an upper revolving body mounted on the lower traveling body so as to be capable of turning,
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 is seated, and a floor plate that is positioned in front of the driver seat and serves as a scaffold for the operator. In a construction machine comprising a member, a canopy attached to the floor member and covering the driver's seat from above, and a floor mat provided on a floor plate portion of the floor member,
The canopy is formed of a hollow member having an open end surface, and is fixed to a front mounting member that is mounted on the front side of the floor member, a rear mounting member that is mounted on the rear side of the floor member, and the front and rear mounting members. A plurality of support pillars extending upward and downward, and a roof attached to each of the support pillars and covering the driver's seat;
A construction machine characterized in that the floor mat is provided with a fitting portion that fits into an opening end of the front mounting member and fixes the floor mat to the floor member.   The floor mat includes a mat main body that covers the floor plate portion of the floor member, an opening that is provided on the front side of the mat main body and that is disposed on the front side of the driver's seat, and through which the lever is inserted. The construction machine according to claim 1, further comprising a fitting portion provided at a front end portion of the mat body and positioned on the front side.   The front mounting member of the canopy is formed as a cylinder having a closed cross-sectional structure, and the fitting portion of the floor mat is provided at a position facing the opening end of the front mounting member and is fitted to the opening end. The construction machine according to claim 1, wherein the construction machine is configured as a cylindrical protrusion that is liquid-tightly covered.

Images