JP2016098626A - Cab for construction machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily take a wiring out of a wiring cover and to improve workability of installation work for an electrical article.SOLUTION: At rear positions of a cab box 13, left and right wiring insertion holes 19 for leading wirings 21, 22 out of the cab box 13 and wiring covers 25, 31 covering the respective wiring insertion holes 19 are provided. The wiring covers 25, 31 have upper openings 26 formed at upper positions so as to take the wirings 21, 22 out, and lower openings 27 formed at positions below the upper openings 26. The wiring covers 25, 31 are half-split bowl-shaped bodies formed in a substantially half-split bowl shape, and edges of the half-split bowl bodies forming the wiring covers 25, 31 are fitted to a rear face part 15 at a rear position of the cab box 13.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a cab for construction machinery that is suitably used for forming a driver's cab such as a hydraulic excavator or a hydraulic crane.

  Generally, in construction machines such as a hydraulic excavator, an upper swing body is mounted on a lower traveling body so as to be capable of swinging, and a cab on which an operator gets on the upper swing body is provided. Further, the cab includes a cab box that is formed by a front surface portion, a rear surface portion, a left side surface portion, a right side surface portion, and a top surface portion and in which a cab is defined (for example, see Patent Document 1).

  In the cab described in Patent Document 1, an antenna cover that covers the antenna and the wiring insertion hole is provided at the upper position of the rear surface portion. For example, when a rear illumination lamp or a rotating lamp is installed at the rear part of the cab, the antenna cover is provided with an outlet for taking out a wiring connected to the antenna cover. When these rear illumination lights and rotating lights are not installed, a cap is attached to the outlet of the antenna cover to close it.

JP 2012-219516 A

  By the way, in the cab described in Patent Document 1, when a rear illumination lamp or a rotating lamp is installed, the cap is removed from the outlet and the wiring is taken out from the inside of the cab. In this case, it is necessary to remove the cap and to work carefully so as not to damage the cap. For this reason, there exists a problem that installation work of a back illuminating lamp and a revolving lamp will require time.

  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 a construction machine in which wiring can be easily taken out from a wiring cover and workability of installation work of electrical components can be improved. It is to provide a cab for use.

  In order to solve the above-described problems, the present invention is applied to a cab for a construction machine including a cab box that is formed by a front surface portion, a rear surface portion, a left side surface portion, a right side surface portion, and a top surface portion and in which a cab is defined. Is done.

  And the feature of the configuration adopted by the present invention is that a wiring insertion hole for drawing wiring from the inside of the cab box to the outside and a wiring cover covering the wiring insertion hole are provided at the rear position of the cab box, The wiring cover includes an upper opening formed at an upper position for taking out the wiring and a lower opening formed at a position lower than the upper opening.

  ADVANTAGE OF THE INVENTION According to this invention, wiring can be taken out from a wiring cover easily and workability | operativity of the installation operation | work of an electrical component can be improved.

It is a left view of the hydraulic excavator provided with the cab applied to embodiment of this invention. It is a left view which expands and shows the cab in FIG. It is a right view which expands and shows the cab in FIG. It is a rear view which expands and shows the cab in FIG. It is sectional drawing which expands and shows a cab box and a wiring cover from the arrow VV direction in FIG. It is sectional drawing which expands and shows a cab box and a wiring cover from the arrow VI-VI direction in FIG. It is a top view which shows a wiring cover alone. It is a perspective view which shows a wiring cover from the direction attached to a cab box. It is the perspective view which looked at the state of wiring when not installing a back illuminating lamp from the arrow IX-IX direction in FIG. It is sectional drawing which looked at the wiring cover etc. of 2nd Embodiment from the same position as FIG. It is the rear view which looked at the cab of 3rd Embodiment from the same position as FIG.

  Hereinafter, a case where a cab for construction machinery according to an embodiment of the present invention is applied to a hydraulic excavator will be described as an example, and a detailed description will be given with reference to the accompanying drawings.

  1 to 9 show a first embodiment of the present invention. In FIG. 1, a hydraulic excavator 1 as a construction machine includes a lower traveling body 2 provided with a crawler belt, and an upper revolving body 3 provided on the lower traveling body 2 so as to be able to swivel. A working device 4 for excavating earth and sand is provided at the front part so as to be able to move up and down.

  The upper swing body 3 includes a swing frame 5, a cab 11 described later mounted on the left side of the front portion of the swing frame 5, and an engine provided on the swing frame 5 from the right side to the rear side of the cab 11. A building cover 6 that accommodates a hydraulic pump (none of which is shown) and a counterweight 7 attached to the rear end of the revolving frame 5 are provided.

  Next, the configuration of the excavator cab 11 as a construction machine cab applied to the first embodiment will be described.

  The cab 11 is mounted on the front left side of the revolving frame 5. The cab 11 defines a driver's cab in which an operator gets in, and a driver's seat, various levers (none of which are shown) and the like are disposed therein. As shown in FIGS. 2 to 4, the cab 11 includes a floor member 12, a cab box 13, wiring covers 25 and 31, and the like which will be described later.

  The floor member 12 constitutes the floor surface of the cab 11, and is formed as a rectangular plate that is long in the front and rear directions, for example. A plurality of locations including the four corners of the floor member 12 are supported by the revolving frame 5 via vibration-proof mounts (not shown). On the floor member 12, a driver's seat or the like is provided.

  The cab box 13 is provided on the floor member 12 and constitutes the outer shape of the cab 11. The cab box 13 forms a living space on which the operator gets on the floor member 12. The cab box 13 is formed in a box shape using, for example, a front surface portion 14, a rear surface portion 15, a left side surface portion 16, a right side surface portion 17, and a top surface portion 18 made of a panel material, and the inside is a cab. The cab box 13 has a front surface portion 14, a rear surface portion 15, a left side surface portion 16, and a lower portion of the right side surface portion 17, which form a peripheral surface, attached to the periphery of the floor member 12.

  The front surface portion 14 is provided on the front side of the cab box 13 and includes a front window (not shown) for giving a wide front view to the operator.

  The rear surface portion 15 is erected facing the rear of the front surface portion 14. A rear window 15A for providing a rear view to the operator is provided above and below the middle portion in the upper and lower direction of the rear surface portion 15. In addition, wiring covers 25 and 31 described later, a rotating lamp 24, and the like are attached to the rear surface portion 15 at an upper portion 15B on the top surface portion 18 side. Further, a right wiring insertion hole 19 (shown only on the right side in FIGS. 6 and 9), which will be described later, is formed on the left and right sides covered with the wiring covers 25 and 31 in the upper portion 15B of the rear surface portion 15. ing.

  The left side surface portion 16 is provided to extend in the front and rear directions between the left end of the front surface portion 14 and the left end of the rear surface portion 15. The left side 16 has a left window 16A on the rear side from the middle part in the front and rear directions, and an entrance 16B for an operator to get on and off the cab 11 from the middle part to the front side. A door 16C for opening and closing the entrance 16B is rotatably attached to the left side surface portion 16.

  As shown in FIG. 3, the right side surface portion 17 is provided between the right end of the front surface portion 14 and the right end of the rear surface portion 15 so as to extend in the front and rear directions. The right side surface portion 17 has a right window 17A on the upper side from the middle portion in the upper and lower directions.

  The top surface portion 18 is provided to extend in the horizontal direction so as to cover the upper portions of the surface portions 14 to 17. A rear illumination lamp 23 (described later) is attached to the top surface portion 18 so as to be positioned at a rear portion 18A on the rear surface portion 15 side.

  As shown in FIGS. 6 and 9, the right wiring insertion hole 19 is provided in the upper portion 15 </ b> B of the rear surface portion 15 that is the rear position of the cab box 13. The right wiring insertion hole 19 is opened to the right side of the upper portion 15B so as to correspond to the rear illumination lamp 23 arranged on the right side of the cab box 13. Specifically, the right wiring insertion hole 19 is formed as a circular opening in the rear surface portion 15 made of a metallic panel. The right wiring insertion hole 19 is used to draw out a right wiring 21 described later from the inside of the cab box 13 to the outside. The right wiring insertion hole 19 is provided with a seal member 20 that prevents external rainwater, dust, and the like from entering the cab 11 through the right wiring insertion hole 19.

  The right wiring 21 is inserted into the right wiring insertion hole 19. One end of the right wiring 21 located in the cab 11 is connected to a power source (both not shown) via a switch for switching on and off, for example. The other end of the right wiring 21 is taken out to the outside of the cab 11 through the right wiring insertion hole 19 (seal member 20) and connected to the rear illumination lamp 23. On the other hand, when the rear illumination lamp 23 is not installed, as shown in FIG. 9, the right wiring 21 is housed in a state wound around the right wiring cover 25, and the terminal portion is protected at the tip thereof. A wiring cap 21A is attached.

  The left wiring 22 is inserted through a left wiring insertion hole (not shown). As with the right wiring 21, the left wiring 22 has one end located in the cab 11 connected to a power source (both not shown) via a switch. The other end of the left wiring 22 is taken out to the outside of the cab 11 through the left wiring insertion hole and connected to the rotating lamp 24. On the other hand, when the rotating lamp 24 is not installed, like the right wiring 21, the left wiring 22 is housed in the left wiring cover 31, and a wiring cap (not shown) is attached to the tip thereof. .

  The rear illumination lamp 23 is attached to the right position of the rear portion 18A of the top surface portion 18 using an attachment bracket 23A. The rear illumination lamp 23 is connected to the right wiring 21 taken out from the right wiring cover 25 to the upper side. Thus, the rear illumination lamp 23 can illuminate the rear of the excavator 1 during night work by operating the switch in the cab 11 to light up.

  The rotating lamp 24 is attached to the left position of the upper portion 15B of the rear surface portion 15 using a rotating lamp mounting base 24A. The rotating lamp 24 is connected to the left wiring 22 taken out from the left wiring cover 31 downward. As a result, the rotating lamp 24 is lit by operating a switch in the cab 11 so as to call attention around the excavator 1 when excavation work or the like is performed using the work device 4, for example. .

  Next, the configuration, operational effects, and the like of the right wiring cover 25 and the left wiring cover 31, which are characteristic parts of the present invention, are described. The right wiring cover 25 and the left wiring cover 31 have the same shape except that they are symmetrical on the left and right. Therefore, the right wiring cover 25 will be described in detail, and the left wiring cover 31 will be appropriately denoted by the reference numerals corresponding to the right wiring cover 25, and detailed description thereof will be omitted.

  As shown in FIGS. 4 and 5, the right wiring cover 25 is attached to the right position covering the right wiring insertion hole 19 provided in the upper portion 15 </ b> B of the rear surface portion 15. The right wiring cover 25 is a substantially half-divided half-divided body having a large front opening, and is formed using, for example, a resin material, a metal material, or the like. The right wiring cover 25 stores the right wiring 21 taken out from the cab 11 through the right wiring insertion hole 19 and leads it toward the rear illumination lamp 23.

  As shown in FIGS. 7 and 8, the right wiring cover 25 includes an upper plate portion 25A positioned on the upper side, a lower plate portion 25B disposed on the lower side so as to face the upper plate portion 25A, and an upper plate. The inner plate portion 25C, the outer plate portion 25D, the rear plate portion 25E, and the front plate portion 25A, the lower plate portion 25B, and the outer plate portion 25D, which are connected between the portion 25A and the lower plate portion 25B, are provided. The fixing surface portion 25F is included. The right wiring cover 25 includes an upper opening 26, a lower opening 27, and a side opening 28.

  The upper plate portion 25A is formed as a C-shaped frame surrounding the upper opening 26, and is inclined upward toward the center side thereof. Thereby, upper board part 25A can discharge rain water, dust, etc. actively.

  The lower plate portion 25 </ b> B is formed as a C-shaped frame that surrounds the lower opening 27. The lower plate portion 25B forms a frame that is wider than the upper plate portion 25A. Here, contrary to the upper plate portion 25A, the lower plate portion 25B is inclined toward the lower opening 27 located substantially at the center. As a result, the lower plate portion 25B can move rainwater, dust, or the like that has entered the inside of the right wiring cover 25 from the upper opening 26 with an inclination and discharge the rainwater, dust, or the like from the lower opening 27 to the outside.

  The inner plate portion 25C is provided on the left side position inside the right wiring cover 25 across the upper plate portion 25A and the lower plate portion 25B. Further, the outer plate portion 25D is provided at the right side position on the outer side of the right wiring cover 25 across the upper plate portion 25A and the lower plate portion 25B in the same manner as the inner plate portion 25C.

  The rear plate portion 25E is located between the inner plate portion 25C and the outer plate portion 25D, and is provided across the upper plate portion 25A and the lower plate portion 25B. Here, the inner plate portion 25C, the outer plate portion 25D, and the rear plate portion 25E that form the periphery can be improved in appearance by being connected in a smooth arc shape.

  The fixing surface portion 25F is provided across the outer portion (right side) of the upper plate portion 25A and the lower plate portion 25B and the front end (front end) of the outer plate portion 25D. In addition, the fixing surface portion 25F is formed wider than the upper plate portion 25A, the lower plate portion 25B, and the outer plate portion 25D, so that the rear surface portion 15 of the cab box 13 can be securely attached using an adhesive, a double-sided tape, or the like. It can be fixed to.

  As shown in FIG. 7, the upper opening 26 is formed in a substantially semicircular arc shape by largely notching the inner peripheral side of the upper plate portion 25 </ b> A located on the upper side of the right wiring cover 25. This upper opening 26 is for taking out the right wiring 21 taken out from the cab 11 through the right wiring insertion hole 19 toward the rear illumination lamp 23 located above the right wiring cover 25. Here, since the upper opening 26 is not visible from the ground, it can be opened largely without worrying about the appearance, and the right wiring 21 can be easily taken out.

  The lower opening 27 is formed in a substantially trapezoidal shape or a triangular shape by notching a small inner peripheral side of the lower plate portion 25B located below the upper opening 26. The front and rear dimensions of the lower opening 27 are set to about half of the front and rear directions of the right wiring cover 25, and the left and right dimensions of the lower opening 27 are the left and right directions of the right wiring cover 25. It is set to about half of. Thereby, the lower opening 27 is formed smaller than the upper opening 26. The lower opening 27 is for taking out the right wiring 21 taken out from the cab 11 through the right wiring insertion hole 19 toward the rear illumination lamp 23 located above the right wiring cover 25. Further, the lower opening 27 constitutes a discharge port for discharging rainwater, dust or the like entering the right wiring cover 25 from the upper opening 26 to the outside. Here, since the lower opening 27 is smaller than the upper opening 26 and is difficult to see from the ground, the appearance can be improved.

  As shown in FIG. 5, the side opening 28 is formed as a vertical slit penetrating upward and downward between the front end of the inner plate portion 25 </ b> C and the upper portion 15 </ b> B of the rear surface portion 15 constituting the cab box 13. ing. Thereby, the side opening 28 can take out the right wiring 21 from the gap, and guides the right wiring 21 taken out from the large opening 26 to the lower opening 27 side through the side opening 28. And wiring work can be easily performed.

  The storage space 30 is formed inside the upper plate portion 25A, the lower plate portion 25B, the inner plate portion 25C, the outer plate portion 25D, and the rear plate portion 25E. As shown in FIG. 8, the storage space 30 can store the wound right wiring 21.

  The left wiring cover 31 is attached to the left position that covers the left wiring insertion hole provided in the upper portion 15 </ b> B of the rear surface portion 15. Similar to the right wiring cover 25, the left wiring cover 31 is formed as a substantially half-divided half-opened body having an open front surface. The left wiring cover 31 has an upper opening, a lower opening, and a side opening (all not shown), and can store the left wiring 22 taken out from the cab 11 through the left wiring insertion hole. . On the other hand, the left wiring cover 31 can take out the left wiring 22 for the rotating lamp 24 from these openings.

  The hydraulic excavator 1 according to the first embodiment has the above-described configuration. For example, when the operator tilts the traveling lever in the cab 11 at a work site or the like, the lower traveling body 2 moves forward and backward, for example. Let Then, when performing excavation work or the like of earth and sand, the working device 4 is operated by tilting the working lever, or the upper swing body 3 is swung. In this case, by operating each switch in the cab 11, the rear illumination lamp 23 and the rotating lamp 24 can be turned on.

  Thus, according to the first embodiment, the rear surface portion 15, which is the rear position of the cab box 13, has the respective wiring insertion holes 19 that lead out the wirings 21 and 22 from the inside of the cab box 13 and the respective wiring insertions. Wiring covers 25 and 31 covering the holes 19 are provided. The right wiring cover 25 includes an upper opening 26 formed at an upper position for taking out the wiring 21, and a lower opening 27 formed at a position lower than the upper opening 26. The same applies to the left wiring cover 31. Are provided with an upper opening and a lower opening.

  Thereby, the wiring covers 25 and 31 can cover each wiring insertion hole 19. On this basis, the right wiring 21 can be easily connected to the rear illumination lamp 23 by taking it out from the upper opening 26 of the right wiring cover 25. Further, by taking out the left wiring 22 from the lower opening of the left wiring cover 31, it can be easily connected to the rotating lamp 24. As a result, workability when attaching the wirings 21 and 22 to the rear illumination lamp 23 and the revolving lamp 24 can be improved, and the installation work time of the rear illumination lamp 23 and the revolving lamp 24 can be shortened.

  Here, since the cab described in Patent Document 1 is configured to attach a cap as a separate member to the outlet for taking out the wiring, there is a possibility that a step or a groove appears in the cap attaching portion and the appearance is impaired. However, according to the first embodiment, the right wiring cover 25 is configured as a single article without providing a cap as a separate member on the rear surface portion 15 of the cab box 13. Thereby, the fitting part of the rear surface part 15 and a cap is lose | eliminated, the freedom degree of the shape development of the rear surface part 15 improves, and external appearance quality can also be improved.

  In addition, when the wiring cover is formed from a plurality of members, it is necessary to develop each member, which may increase the development period. On the other hand, according to the first embodiment, the development period of the wiring covers 25 and 31 can be shortened. Further, the manufacturing cost can be reduced by reducing the number of parts.

  Further, the wiring cover 25 is a half-divided body formed in a substantially half-divided shape, and the fixing surface portion 25F is provided at the edge of the half-divided body forming the wiring cover 25. The right wiring cover 25 can be easily attached to the rear surface portion 15 of the cab box 13 using a double-sided tape.

  Further, the upper opening 26 of the right wiring cover 25 is formed larger than the lower opening 27. Thereby, the right wiring 21 accommodated in the storage space 30 of the right wiring cover 25 can be easily taken out from the upper opening 26 of the right wiring cover 25.

  Furthermore, since the lower plate portion 25B on the lower surface side of the right wiring cover 25 is inclined toward the lower opening 27, rainwater and dust that have entered the right wiring cover 25 are moved by the lower plate portion 25B. The gas can be discharged from the lower opening 27 to the outside. Thereby, the right wiring 21 in the right wiring cover 25 can be protected.

  Next, FIG. 10 shows a second embodiment of the present invention. A feature of the second embodiment is that the side opening of the wiring cover is omitted. In the second embodiment, the same components as those in the first embodiment described above are denoted by the same reference numerals, and description thereof is omitted.

  In FIG. 10, the right wiring cover 41 of the second embodiment is similar to the right wiring cover 25 of the first embodiment in an upper plate portion 41A, a lower plate portion 41B, an inner plate portion 41C, and an outer plate. Part (not shown), rear plate part 41D, fixing surface part 41E, and the like. However, the right wiring cover 41 is different from the right wiring cover 25 of the first embodiment in that the inner plate portion 41C is fixed to the upper portion 15B of the rear surface portion 15.

  Thus, also in the second embodiment configured as described above, it is possible to obtain substantially the same operational effects as those of the first embodiment described above. According to the second embodiment, the right wiring cover 41 can enlarge the fixing surface portion 41E with respect to the cab box 13, and can increase the attachment strength.

  Next, FIG. 11 shows a third embodiment of the present invention. A feature of the third embodiment resides in that a wiring cover is provided on each of the left side surface portion and the right side surface portion. In the third embodiment, the same components as those in the first embodiment described above are denoted by the same reference numerals, and description thereof is omitted.

  In FIG. 11, the right wiring cover 51 is attached to the upper rear position of the right side surface portion 17. The right wiring cover 51 is formed in the same manner as the right wiring cover 25 according to the first embodiment. Further, the left wiring cover 52 is attached to the upper rear position of the left side surface portion 16, and is formed in the same manner as the left wiring cover 31 according to the first embodiment.

  Thus, also in the third embodiment configured as described above, it is possible to obtain substantially the same operational effects as those of the first embodiment described above. In this case, according to the third embodiment, the wiring covers 51 and 52 can be provided on the right side surface portion 17 and the left side surface portion 16, respectively, and the degree of freedom in design can be increased.

  In the first embodiment, the right wiring cover 25 is provided on the right side of the upper portion 15B of the rear surface portion 15, and the left wiring cover 31 is provided on the left side of the upper portion 15B of the rear surface portion 15. However, the present invention is not limited to this, and the wiring cover may be provided only in one of the left and right directions. The same applies to the second and third embodiments.

  In the first embodiment, the wiring covers 25 and 31 are provided on the rear surface portion 15. However, the present invention is not limited to this, and one wiring cover may be provided on the rear surface portion and the other wiring cover may be provided on the side surface portion. The same applies to the second and third embodiments.

  Further, in the first embodiment, the rear illumination lamp 23 is provided in the rear portion 18A of the top surface portion 18 and the rotating lamp 24 is provided in the upper portion 15B of the rear surface portion 15. However, the present invention is not limited to this, and the rear illumination lamp may be provided on the rear surface portion, the rotating lamp may be provided on the top surface portion, or two rear illumination lamps or two rotating lamps may be provided. Furthermore, it is good also as a structure which provides not only a back illuminating lamp and a rotation lamp but a camera, a speaker, etc. The same applies to the second and third embodiments.

  In each of the embodiments, the cab 11 used in the crawler excavator 1 is described as an example of the cab for the construction machine. However, the present invention is not limited to this, and may be applied to a cab mounted on a wheel-type hydraulic excavator. Besides, it can be widely applied to cabs such as hydraulic cranes, wheel loaders and forklifts.

1 Excavator (construction machine)
DESCRIPTION OF SYMBOLS 11 Cab 13 Cab box 14 Front surface part 15 Rear surface part 16 Left side part 17 Right side part 18 Top surface part 19 Right wiring insertion hole 21 Right wiring 22 Left wiring 25, 41, 51 Right wiring cover 26 Upper opening 27 Lower opening 31, 52 Left wiring cover

Claims (4)

In a cab for a construction machine including a cab box that is formed by a front surface portion, a rear surface portion, a left side surface portion, a right side surface portion, and a top surface portion and in which a cab is defined,
In the rear position of the cab box, a wiring insertion hole for drawing out wiring from the inside of the cab box to the outside, and a wiring cover that covers the wiring insertion hole are provided,
The cab for a construction machine, wherein the wiring cover includes an upper opening formed at an upper position for taking out the wiring, and a lower opening formed at a position lower than the upper opening. The wiring cover is a half-divided body formed in a substantially half-divided shape,
The cab for a construction machine according to claim 1, wherein an edge of the half-cut frame forming the wiring cover is attached to a rear position or a side position of the cab box.   The cab for construction machinery according to claim 1 or 2, wherein the upper opening is formed larger than the lower opening.   The cab for construction machines according to any one of claims 1 to 3, wherein a lower surface side of the wiring cover is inclined toward the lower opening.

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