JP2013227727A - Electric equipment mounting structure of construction machinery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To sufficiently secure a living space in a cab while arranging electric equipment on the rear side of an operation seat.SOLUTION: A storage shelf 40 for housing electric equipment 50 is arranged on a vehicle rear side with respect to an operation seat 30 in a cab 20. The storage shelf 40 includes a pair of erection members 41 which are erected at an interval in a vehicle width direction, and a support member 42 which is provided at upper ends of the pair of erection members in such a manner as to straddle the pair of erection members 41. The electric equipment 50 is arranged between the pair of erection members 41 in the forward tilting attitude of being inclined obliquely upward toward the front side of a vehicle, and demountably mounted on the storage shelf 40 via a mounting bracket 60.

Description

  The present invention relates to an electrical component mounting structure for a construction machine.

  Conventionally, a cab box, a driver seat located on the floor board located in the cab box, a support base located on the floor board behind the driver seat and having electrical components arranged on the upper surface side, There is known a cab for construction machinery provided with (for example, see Patent Document 1).

  Here, when the number of electrical components to be mounted is large, it is difficult to arrange all the electrical components on the upper surface side of the support base. Therefore, it is considered that the space between the rear side of the driver's seat and the back wall of the cab is expanded according to the number of electrical components, and the electrical components are also arranged on the side surface and back surface of the support base, the top surface of the floorboard, the side surface of the cab, etc. It is done.

JP 2000-170209 A

  However, for example, in medium-sized and small construction machines, the space in the cab itself is small. Therefore, if the space between the rear side of the driver's seat and the back wall of the cab is widened, the living space in the cab is reduced accordingly. There was a problem that.

  This invention is made | formed in view of this point, The objective is to enable it to ensure the living space in a cab fully, arrange | positioning an electrical component on the back side of a driving seat.

  The present invention is a lower traveling body, an upper swing body mounted on the lower traveling body, a cab mounted on an upper frame of the upper swing body, an operation seat disposed in the cab, An electrical component mounting structure for a construction machine including a storage shelf in the cab, which is disposed on the rear side of the vehicle with respect to the operation seat and stores electrical components, and has taken the following solutions. It was.

That is, according to the first aspect of the present invention, the storage shelf includes a pair of standing members standing at intervals in the vehicle width direction, and a support member provided at an upper end portion of the storage shelf so as to straddle the pair of standing members. And
The electrical component is arranged between the pair of standing members in a forward inclined posture inclined obliquely upward toward the front of the vehicle.

  In the first invention, a gate-type storage shelf having a pair of standing members standing at intervals in the vehicle width direction and a support member provided at the upper end of the pair of standing members so as to straddle the pair of standing members Is disposed in the cab and on the vehicle rear side of the driving seat. The electrical component is disposed between the pair of standing members in a forward inclined posture inclined obliquely upward toward the front of the vehicle.

  With such a configuration, the electrical components can be stored inside the storage shelf, so there is no need to expand the space between the rear side of the operation seat and the back wall of the cab in order to arrange the electrical components, Sufficient living space in the cab can be secured. In addition, since the electrical component is disposed in a forwardly inclined posture between the pair of standing members, the height of the storage shelf can be suppressed to be lower than when the electrical component is placed vertically. Furthermore, since a space from the electrical component to the cab bottom can be given, it is easy to route a harness connected to the electrical component.

According to a second invention, in the first invention,
A mounting bracket that holds the electrical component at an inclination angle that can be pulled out along an inclination direction when the backrest portion of the operation seat is inclined forward and is detachably attached to the pair of standing members. It is characterized by that.

  In the second invention, the electrical component is detachably attached to the pair of standing members via the attachment bracket. At this time, the electrical component is held at an inclination angle that can be pulled out along the inclination direction when the backrest portion of the operation seat is inclined forward.

  With such a configuration, when the backrest part of the operation seat is tilted forward, the electrical components can be pulled out along the inclination direction of the backrest part, so that the electrical components and the mounting bracket can be removed smoothly from the storage shelf. It is possible to perform maintenance work of electrical components.

According to a third invention, in the second invention,
The mounting bracket has a pair of front mounting portions that extend outward in the vehicle width direction from the electrical components,
The pair of standing members have a pair of front fixing portions corresponding to the pair of front mounting portions,
A fastening member for fastening and fixing the pair of front mounting portions and the pair of front fixing portions;
One of the pair of front mounting portions is in contact with the front surface of the corresponding front fixing portion, and the other front mounting portion is in contact with the rear surface of the corresponding front fixing portion. In the state, it is fastened and fixed by the fastening member.

  In the third invention, the front mounting portion of the mounting bracket and the front fixing portion of the standing member are fastened and fixed by the fastening member. One front mounting portion is in contact with the front surface of the corresponding front fixing portion. The other front mounting portion is in contact with the rear surface of the corresponding front fixing portion.

  With such a configuration, when the fastening member is loosened and the mounting bracket is removed, it is possible to prevent the electrical component and the mounting bracket from falling down and being damaged unintentionally.

  Specifically, when both of the front mounting portions of the mounting bracket are brought into contact with the vehicle front surface of the front fixing portion of the standing member, when the fastening member is loosened, the electrical component and the mounting bracket are weighted by the weight of the electrical component. Tries to fall toward the front of the vehicle. At this time, if the operator does not hold the electrical component and the mounting bracket, the electrical component and the mounting bracket may fall down unintentionally to the front side of the vehicle and may be damaged.

  On the other hand, in the present invention, even if the electrical component and the mounting bracket are about to fall down on the front side of the vehicle, the movement is restricted by the front mounting portion that is in contact with the surface of the front fixing portion on the rear side of the vehicle. It can suppress that an electrical component and a mounting bracket are damaged.

According to a fourth invention, in the second invention,
The mounting bracket includes a front mounting portion that extends outward in the vehicle width direction from the electrical component, and a side mounting portion that extends in a direction opposite to the front mounting portion and then bends and extends toward the rear of the vehicle. And
The pair of standing members include a front fixing portion corresponding to the front mounting portion and a side fixing portion corresponding to the side mounting portion,
A fastening member for fastening and fixing the front mounting portion and the front fixing portion, and the side mounting portion and the side fixing portion;
The front mounting portion is in contact with a rear surface of the front fixing portion, and the side mounting portion is fastened and fixed by the fastening member in contact with an outer surface of the side fixing portion. It is characterized by this.

  In the fourth invention, the front mounting portion of the mounting bracket and the front fixing portion of the standing member are fastened and fixed by the fastening member. Further, the side surface mounting portion of the mounting bracket and the side surface mounting portion of the standing member are fastened and fixed by a fastening member. The front mounting portion is in contact with the vehicle rear surface of the front fixing portion. The side surface mounting portion is in contact with the outer surface of the side surface fixing portion.

  With such a configuration, the mounting bracket can be removed by loosening the fastening member from the outside in the vehicle width direction. In addition, when the mounting bracket is removed, even if the electrical component and the mounting bracket are about to fall to the front side of the vehicle, the movement is regulated by the front mounting portion that is in contact with the rear surface of the front fixing portion. In addition, it is possible to prevent the electrical component and the mounting bracket from being accidentally collapsed and damaged.

According to a fifth invention, in any one of the first to fourth inventions,
The mounting bracket includes a pair of side plates disposed at intervals in the vehicle width direction of the electrical component, and a back plate integrally formed on the rear side of the vehicle so as to straddle the pair of side plates. It is characterized by having.

  In 5th invention, it attaches with a pair of side plate arrange | positioned at intervals in the vehicle width direction of an electrical component, and the back plate integrally formed in the vehicle rear side part so that it may straddle a pair of side plate A bracket is formed.

  With such a configuration, by arranging a plurality of electrical components (for example, small relays) side by side on the surface of the back plate, a plurality of electrical components can be disposed between the pair of standing members. Moreover, if an attachment bracket is removed, a several electrical component can be removed simultaneously. Furthermore, since the inside of the storage shelf is partitioned by the back plate, tools and the like can be stored in a storage space provided on the rear side of the vehicle with respect to the back plate.

  According to the present invention, since the electrical components can be stored in the storage shelf, it is not necessary to widen the space between the rear side of the operation seat and the back wall of the cab in order to arrange the electrical components, and the living space in the cab Can be secured sufficiently. In addition, since the electrical component is disposed in a forwardly inclined posture between the pair of standing members, the height of the storage shelf can be suppressed to be lower than when the electrical component is placed vertically. Furthermore, since a space from the electrical component to the cab bottom can be given, it is easy to route a harness connected to the electrical component.

It is a perspective view which shows the structure of the construction machine which concerns on Embodiment 1 of this invention. It is a perspective view which shows the structure in a cab. It is a side view which shows the structure in a cab. It is a perspective view which shows the structure of an electrical component and a mounting bracket. It is a perspective view which shows the state before storing an electrical component in a storage shelf. It is a front view which shows the state which attached the attachment bracket to the storage shelf. It is AA arrow sectional drawing of FIG. It is BB arrow sectional drawing of FIG. It is a top view which shows the state which attached the attachment bracket to the storage shelf. It is a top view which shows the state in the middle of removing the attachment bracket from a storage shelf. It is a top view which shows the state which attached the mounting bracket which concerns on this Embodiment 2 to the storage shelf. It is a top view which shows the state in the middle of removing the attachment bracket from a storage shelf. It is a perspective view which shows the state which attached the mounting bracket which concerns on this Embodiment 3 to the storage shelf.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. It should be noted that the following description of the preferred embodiment is merely illustrative in nature and is not intended to limit the present invention, its application, or its use. In each figure, the up / down and front / rear / left / right directions are indicated by arrows. Unless stated otherwise, the vertical direction will be described according to the directions indicated by these arrows.

Embodiment 1
FIG. 1 is a perspective view showing a configuration of a construction machine according to Embodiment 1 of the present invention. As shown in FIG. 1, the construction machine 10 includes a crawler-type lower traveling body 11 and an upper revolving body 12 that is rotatably installed on the lower traveling body 11.

  The upper swing body 12 is provided with an upper frame 13, an attachment 14, an engine room 15, a cab 20, and the like. In addition, the construction machine 10 of this embodiment is a backward small turning type. The upper turning body 12 is configured to be relatively small so that the turning radius becomes smaller, and the outline of the rear part of the upper turning body 12 is formed in an arc shape when viewed from above.

  The attachment 14 is installed in the front part of the upper revolving structure 12, and is composed of a boom 14a, an arm 14b, a bucket 14c, and the like. Each of the booms 14a and the like operates in conjunction with the expansion and contraction of the hydraulic cylinder 14d that is hydraulically controlled, and performs work such as excavation. The operation of the boom 14a and the like is performed in the cab 20.

  The engine room 15 is provided at the rear part of the upper swing body 12. Although not shown in the drawing, the engine and hydraulic equipment are housed in the engine room 15 in a dense state. In the construction machine 10, the rear portion of the engine room 15 is covered with a counterweight 16.

  The cab 20 is a rectangular box-shaped cab, and is installed on the left front portion of the upper swing body 12 adjacent to the attachment 14. On the left side surface of the cab 20 constituting the left side surface of the upper swing body 12, a door 21 for an operator to enter and exit the cab 20 is provided.

  FIG. 2 is a perspective view showing the configuration inside the cab, and FIG. 3 is a side view. As shown in FIGS. 2 and 3, anti-vibration mounts 23 are disposed at the four corners of the bottom plate 22 constituting the floor surface of the cab 20. The bottom plate 22 is supported on the upper frame 13 via a vibration isolation mount 23.

  A seat base 24 is installed on the bottom plate 22. On the upper surface of the seat base 24, a slide rail 25 extending in the front-rear direction is disposed. The driving seat 30 is installed on the seat base 24 via the slide rail 25 and is slidable in the vehicle front-rear direction. The driving seat 30 includes a seating portion 31 on which an operator sits, a backrest portion 32, and a headrest portion 33.

  Operation levers 26 for driving the attachment 14 are provided on the left and right sides of the operation seat 30. A travel lever 27 extending upward from the bottom plate 22 is provided in front of the operation seat 30. By operating the traveling lever 27, the lower traveling body 11 can be moved forward or backward.

  A travel pedal 28 is provided at the front of the driving seat 30. The operator can adjust the traveling speed of the lower traveling body 11 by adjusting the depression amount of the traveling pedal 28. A footrest 29 is provided outside the travel pedal 28 in the vehicle width direction.

  Inside the cab 20 and behind the operation seat 30, a gate-type storage shelf 40 for storing the electrical component 50 is disposed. The electrical component 50 is detachably attached to the inside of the storage shelf 40 via the attachment bracket 60. A harness 51 is connected to the lower part of the electrical component 50. The harness 51 is routed between the electrical component 50 and the bottom plate 22.

  FIG. 4 is a perspective view showing configurations of the electrical component and the mounting bracket. As shown in FIG. 4, the electrical component 50 is an engine controller formed in a box shape. Mounting holes 50a are formed in the left and right end faces of the electrical component 50 with a space in the vertical direction. In addition, in this embodiment, although the engine controller was illustrated and demonstrated as the electrical component 50, it is not limited to this form.

  The upper surface and the rear surface of the electrical component 50 are covered with a cover plate 52. The cover plate 52 is a plate-like body that is bent into an L-shaped cross section. Protruding portions 53 are provided on the upper surface of the cover plate 52 at intervals in the left-right direction.

  The mounting bracket 60 has a pair of side plates 61 arranged at intervals in the vehicle width direction of the electrical component 50, and a pair of side plates 61 extending from the front ends of the pair of side plates 61 outward in the vehicle width direction. It has a front mounting portion 62 and a pair of upper surface plates 63 respectively extending from the upper end portions of the pair of side surface plates 61 toward the inside in the vehicle width direction.

  The side plate 61 has a rear edge inclined obliquely upward toward the front of the vehicle. Further, side surface mounting holes 61 a are formed in the side surface plate 61 at intervals in the vertical direction corresponding to the mounting holes 50 a of the electrical component 50. And the fastening bolt 55 (refer FIG. 5) as a fastening member is penetrated from the side surface attachment hole 61a, and it is made to fasten to the attachment hole 50a of the electrical component 50, and the electrical component 50 and the attachment bracket 60 are fastened and fixed. At this time, the electrical component 50 is held by the mounting bracket 60 in a forward inclined posture inclined obliquely upward toward the front of the vehicle.

  Front mounting holes 62a are formed in the front mounting portion 62 with a space in the vertical direction. Here, the fastening nut 56 is joined to the back side of the right front mounting portion 62 and to the opening position of the front mounting hole 62a. The pair of front mounting portions 62 are fastened and fixed to a pair of front fixing portions 43 of the storage shelf 40 described later. The upper surface plate 63 is formed with a fitting hole 63a into which the protrusion 53 of the cover plate 52 is fitted.

  FIG. 5 is a perspective view showing a state before electrical components are stored in the storage shelf. As shown in FIG. 5, the storage shelf 40 is composed of a pair of standing members 41 standing at intervals in the vehicle width direction, and a support member provided at the upper end portion so as to straddle the pair of standing members 41. 42. In the present embodiment, the support member 42 is constituted by a fuse box, but the present invention is not limited to this form.

  The pair of standing members 41 are provided with a pair of front fixing portions 43 corresponding to the pair of front mounting portions 62 of the mounting bracket 60 and extending from the front end portions inward in the vehicle width direction. .

  A front fixing hole 43 a is formed in the front fixing portion 43 with a space in the vertical direction corresponding to the front mounting portion 62. Here, a fastening nut 56 (see FIG. 8) is joined to the back side of the left front fixing portion 43 and to the opening position of the front fixing hole 43a. The left standing member 41 is formed with a side fixing hole 41a with an interval in the vertical direction.

  As shown in FIGS. 6 to 9, the front mounting portion 62 of the mounting bracket 60 and the front fixing portion 43 of the standing member 41 are fastened and fixed by fastening bolts 55 and fastening nuts 56. Here, the left front mounting portion 62 is in contact with the front surface of the corresponding front fixing portion 43. Further, the right front mounting portion 62 is in contact with the rear surface of the corresponding front fixing portion 43.

  With such a configuration, when the fastening bolt 55 is loosened and the mounting bracket 60 is removed, even if the electrical component 50 and the mounting bracket 60 try to fall down on the front side of the vehicle, the right front fixing portion 43 on the rear side of the vehicle. The movement is restricted by the right front mounting portion 62 that is in contact with the surface. Thereby, it can suppress that the electrical component 50 and the attachment bracket 60 fall down accidentally and are damaged.

  In addition, in a state where the electrical component 50 and the mounting bracket 60 are attached to the storage shelf 40, the electrical component 50 is in a forward inclined posture that is inclined obliquely upward toward the front of the vehicle. As shown in FIG. 3, the inclination angle is set to an angle that can be pulled out along the inclination direction when the backrest 32 of the operation seat 30 is inclined forward.

  Here, when removing the electrical component 50 and the mounting bracket 60 from the storage shelf 40, first, the backrest portion 32 of the operation seat 30 is tilted forward as shown in FIG. Then, the fastening bolt 55 is removed, and the mounting bracket 60 is rotated clockwise as shown in FIG. 10, and the right front mounting portion 62 that is in contact with the vehicle rear surface of the front fixing portion 43 is moved forward. Move to the side. Thereafter, the electrical component 50 and the mounting bracket 60 are pulled out along the inclination direction of the backrest portion 32, whereby the electrical component 50 and the mounting bracket 60 can be smoothly removed from the storage shelf 40 to perform maintenance work on the electrical component 50. it can.

  In addition, since the attachment work of the electrical component 50 and the attachment bracket 60 may be performed in the reverse procedure to the above-described removal work, description thereof is omitted.

<< Embodiment 2 >>
FIG. 11 is a plan view illustrating a state in which the mounting bracket according to the second embodiment is mounted on the storage shelf. Since the difference from the first embodiment is that the mounting bracket 60 is fastened and fixed from the side surface of the standing member 41, the same parts as those in the first embodiment are denoted by the same reference numerals, and the differences are described below. Only explained.

  As shown in FIG. 11, the mounting bracket 60 includes a pair of side plates 61 arranged at intervals in the vehicle width direction of the electrical component 50, and an outer side in the vehicle width direction from the front end portions of the pair of side plates 61. And a pair of upper surface plates 63 each extending inward in the vehicle width direction from the upper ends of the pair of side plates 61.

  Here, at the left end portion of the left front mounting portion 62, a side mounting portion 64 that is bent and extends toward the rear side of the vehicle is integrally formed. Side attachment holes (not shown) are formed in the side attachment portions 64 at intervals in the vertical direction.

  Further, a side fixing hole 41a (see FIG. 5) is formed in the left standing member 41 with a space in the vertical direction corresponding to the side mounting hole. The standing member 41 constitutes a side surface fixing portion that fixes the side surface attaching portion 64, and a fastening nut 56 is joined to the inner surface side of the standing member 41 at an opening position of the side surface fixing hole 41a.

  The right front mounting portion 62 abuts the surface of the corresponding front fixing portion 43 on the rear side of the vehicle, and the side surface mounting portion 64 abuts the outer surface of the corresponding standing member 41 and the fastening bolt 55 and The fastening nuts 56 are fastened and fixed respectively.

  With such a configuration, when the fastening bolt 55 is loosened and the mounting bracket 60 is removed, even if the electrical component 50 and the mounting bracket 60 try to fall down on the front side of the vehicle, the right front fixing portion 43 on the rear side of the vehicle. Since the movement is regulated by the right front mounting portion 62 that is in contact with the surface, it is possible to prevent the electrical component 50 and the mounting bracket 60 from being accidentally collapsed and damaged.

<< Embodiment 3 >>
FIG. 13 is a perspective view showing a state in which the mounting bracket according to the third embodiment is attached to the storage shelf. As shown in FIG. 13, the mounting bracket 60 includes a pair of side plates 61 arranged at intervals in the vehicle width direction of the electrical component 50, and an outer side in the vehicle width direction from the front end portions of the pair of side plates 61. A pair of front mounting portions 62 that extend toward each other, a pair of upper surface plates 63 that extend from the upper ends of the pair of side plates 61 inward in the vehicle width direction, and a pair of side plates 61 And a rear plate 65 integrally formed on the rear side of the vehicle.

  Here, at the left end portion of the left front mounting portion 62, a side mounting portion 64 that is bent and extends toward the rear side of the vehicle is integrally formed. Side attachment holes (not shown) are formed in the side attachment portions 64 at intervals in the vertical direction.

  A plurality of electrical components 50 are attached to the inner side surface of the side plate 61 and the front side surface of the rear plate 65. In this way, by using the mounting bracket 60 in which the back plate 65 is integrally formed so as to straddle the pair of side plates 61, a plurality of electrical components 50 can be mounted side by side on the surface of the back plate 65, and a pair of standing installations A plurality of electrical components 50 can be disposed between the members 41. Moreover, if the mounting bracket 60 is removed, the plurality of electrical components 50 can be removed simultaneously. Furthermore, since the interior of the storage shelf 40 is partitioned by the back plate 65, tools and the like can be stored in a storage space provided on the rear side of the vehicle with respect to the back plate 65.

  As described above, the present invention is extremely useful and industrial because it provides a highly practical effect that a housing space in the cab can be sufficiently secured while arranging electrical components on the rear side of the operation seat. The availability of is high.

DESCRIPTION OF SYMBOLS 10 Construction machine 11 Lower traveling body 12 Upper turning body 13 Upper frame 20 Cab 30 Operation seat 32 Backrest part 40 Storage shelf 41 Standing member (side fixing part)
42 Supporting member 43 Front fixing part 50 Electrical component 55 Fastening bolt (fastening member)
60 Mounting bracket 61 Side plate 62 Front mounting portion 64 Side mounting portion 65 Back plate

Claims (5)

A lower traveling body, an upper swing body mounted on the lower traveling body, a cab mounted on an upper frame of the upper swing body, an operation seat disposed in the cab, and a cab An electrical component mounting structure for a construction machine including a storage shelf that is disposed on the vehicle rear side of the operation seat and stores electrical components,
The storage shelf has a pair of standing members standing at intervals in the vehicle width direction, and a support member provided at the upper end portion so as to straddle the pair of standing members,
The electrical equipment mounting structure for a construction machine, wherein the electrical equipment is disposed between the pair of standing members in a forwardly inclined posture inclined obliquely upward toward the front of the vehicle. In claim 1,
A mounting bracket that holds the electrical component at an inclination angle that can be pulled out along an inclination direction when the backrest portion of the operation seat is inclined forward and is detachably attached to the pair of standing members. Electrical equipment mounting structure for construction machinery, characterized by In claim 2,
The mounting bracket has a pair of front mounting portions that extend outward in the vehicle width direction from the electrical components,
The pair of standing members have a pair of front fixing portions corresponding to the pair of front mounting portions,
A fastening member for fastening and fixing the pair of front mounting portions and the pair of front fixing portions;
One of the pair of front mounting portions is in contact with the front surface of the corresponding front fixing portion, and the other front mounting portion is in contact with the rear surface of the corresponding front fixing portion. An electrical equipment mounting structure for a construction machine, wherein the electrical equipment is fastened and fixed by the fastening members. In claim 2,
The mounting bracket includes a front mounting portion that extends outward in the vehicle width direction from the electrical component, and a side mounting portion that extends in a direction opposite to the front mounting portion and then bends and extends toward the rear of the vehicle. And
The pair of standing members include a front fixing portion corresponding to the front mounting portion and a side fixing portion corresponding to the side mounting portion,
A fastening member for fastening and fixing the front mounting portion and the front fixing portion, and the side mounting portion and the side fixing portion;
The front mounting portion is in contact with a rear surface of the front fixing portion, and the side mounting portion is fastened and fixed by the fastening member in contact with an outer surface of the side fixing portion. An electrical equipment mounting structure for a construction machine. In any one of claims 1 to 4,
The mounting bracket includes a pair of side plates disposed at intervals in the vehicle width direction of the electrical component, and a back plate integrally formed on the rear side of the vehicle so as to straddle the pair of side plates. An electrical component mounting structure for a construction machine, comprising:

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