JP2005232795A - Hood device of working machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hood device of a working machine capable of lightening a burden of removing and installing a hood, in the working machine having a cabin installed on a swivel base and, at the same time, having the hood covering a space of equipment on the side of the cabin. <P>SOLUTION: The working machine is so constituted that the hood 15 is equipped with an inside wall 37 covering the side of the longitudinal inside of the equipment stationary space oppositely placed by approaching the side of the cabin and a body section 38 covering the front of the equipment stationary space and the side of the longitudinal outside, the body section 38 is separately formed from the inside wall 37 and that an engaged section 58a provided to the front section is pushed into an engaging section 50 provided to the inside wall 37 from the longitudinal outside to mount the front section of the body section 38. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a bonnet device for a working machine.

2. Description of the Related Art Conventionally, as a work machine, there is a backhoe in which a swivel base is provided on a traveling device so as to be turnable around a vertical axis (see Patent Document 1).
In this backhoe, devices such as an engine, a hydraulic pump, and a radiator are arranged at the rear of the swivel, and devices such as a fuel tank, a hydraulic oil tank, and a battery are arranged on the right side of the swivel. The arrangement space of these devices is covered with a bonnet.
This bonnet is composed of a rear bonnet part that covers the engine and the like located at the rear part of the swivel, and a side bonnet part that covers the fuel tank, the hydraulic oil tank and the like located on the right side of the swivel, A driver's seat is provided on the front side of the rear bonnet part and on the left side of the side bonnet part.

The side bonnet portion is fixed to the swivel base and covers a side wall on the inner side in the left-right direction of the device placement space, and is detachably attached to the inner wall and the swivel stand. A main body portion that covers the front surface and the side surface on the outer side in the left-right direction, and an opening / closing cover that is swingably attached to the inner side wall via a hinge and covers the upper surface of the device arrangement space so as to be openable and closable.
Normal maintenance is performed by opening the opening / closing cover, but when repairing or the like, the main body is removed from the swivel base.
Further, the lower part of the front part of the main body is bolted to the inner side wall, and the other parts are bolted to a stay or a support frame fixed to the swivel base.
Japanese Patent Laid-Open No. 2003-64721

In the above-described backhoe, a cabin that forms a driver's cab may be mounted on the swivel. In a backhoe mounted with this cabin, the inner wall of the side bonnet portion is located on the right side of the cabin. Since it will be placed in close proximity, it will be difficult to tighten and loosen the bolt for fixing the front lower part of the main body to the inner wall, and it will take time to remove and assemble the bonnet. There's a problem.
Therefore, in view of the above problems, the present invention provides a work machine equipped with a bonnet that mounts a cabin on a swivel base and covers an arrangement space of equipment on the side of the cabin, and a burden when removing and assembling the bonnet. An object of the present invention is to provide a bonnet device for a work machine that reduces the above-described problem.

  The technical means taken by the present invention to achieve the above-described object is that a cabin is mounted on a swivel that can be swung around an axis in the vertical direction, and a hood that covers the arrangement space of the device is provided on the side of the cabin. The bonnet is disposed opposite to and close to the side surface of the cabin, and covers an inner side wall that covers a side surface on the inner side in the left-right direction of the device arrangement space, and a front surface of the device arrangement space and a side surface on the outer side in the left-right direction. The main body is formed separately from the inner wall, and the engaged portion provided at the front thereof is pushed into the engaging portion provided on the inner wall from the outer side in the left-right direction. It is comprised so that a main-body part front part may be attached by this.

In addition, the main body is positioned in the front-rear direction when the engaged portion is pushed into the engaging portion, and is movable in a predetermined range in the vertical direction. The receiving portion provided on the inner wall is placed in front of the main body. It is preferable that the downward movement of the front part of the main body is restricted by receiving the receiving part provided in the part.
Further, it is preferable that the rear upper wall of the main body is supported by a support frame fixed to the swivel so that downward movement of the rear of the main body is restricted.

  According to the present invention, it is possible to reduce the burden at the time of removing and assembling a bonnet provided close to the side of the cabin.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In FIG. 1 to FIG. 3, reference numeral 1 denotes a backhoe exemplified as a work machine. The backhoe 1 is turnable (rotatable) around a lower traveling device 2 and a vertical axis on the traveling device 2. And the working device 4 provided on the swivel body 3.
The traveling device 2 is configured by a crawler traveling device that travels by circulating a pair of left and right crawler belts 5 by a hydraulic motor, and includes a dozer 6 at a front portion.
The swivel body 3 includes a swivel base (airframe) 7 supported on the travel device 2 so as to be swivelable, a driver seat 8 provided on the swivel base 7, and an engine, a radiator, and a fuel tank mounted on the swivel base 7. , Various devices such as a hydraulic oil tank and a battery, and a bonnet 9 that covers them, and a cabin 10 that forms a driver's cab.

As shown in FIGS. 4 to 6, the swivel base 7 is supported by the frame of the traveling device 2 so as to be turnable to the left and right around a vertical axis through a swivel bearing 11 and is swiveled by a swivel motor. 12 has a revolving frame F formed by fixing reinforcing ribs 27, brackets and the like by welding or the like, and a rear cover 13 having a function as a counterweight for balancing the weight of the working device 4 at the rear of the revolving frame F. The left and right sides and the front side of the revolving frame F are covered with a cover member.
In addition, an engine, a hydraulic pump, and the like are mounted on the rear part of the swivel base 7, and the engine and the like are covered by the main bonnet portion 14 of the bonnet 9, and on the right side (right and left sides) of the swivel base 7. A fuel tank 24, a hydraulic oil tank 25, a battery 26 and the like are mounted (see FIG. 11), and these are covered by a side bonnet portion 15 extending forward from the right side portion of the main bonnet portion 14 of the bonnet 9. .

The driver's seat 8 is disposed on the front side of the main bonnet part 14 and on the left side (the left and right other side) of the side bonnet part 15, and therefore, on the front side of the main bonnet part 14 and on the left side of the side bonnet part 15. In addition, a step for forming the upper surface of the swivel base 7 is provided in a portion where the bonnet 9 on the upper surface side of the swivel base 7 is not provided.
A pair of upper and lower support brackets 16 are provided at the front portion of the swivel base 7 so as to protrude forward and are offset to the right side from the central portion in the left-right direction of the swivel base 7. It is supported so as to be able to swing left and right around the direction axis.

The working device 4 includes a boom 18 whose base is pivotally connected to the upper portion of the swing bracket 17 so as to be swingable about a horizontal axis, and swingable about a horizontal axis on the distal end side of the boom 18. The arm 19 is pivotally connected to the arm 19, and the bucket 20 is pivotally connected to the distal end side of the arm 19 so as to be swingable about a horizontal axis.
The swing bracket, the boom 18, the arm 19, and the bucket 20 are oscillated by a swing cylinder, a boom cylinder 21, an arm cylinder 22, and a bucket cylinder 23, each of which is a hydraulic cylinder.

As shown in FIGS. 4 to 6, the swivel base 7 is provided with a support frame 30 that is located in the main bonnet portion 14 and supports the main bonnet portion 14. And leg portions 32 disposed on the left and right sides of the top plate 31 and in the middle in the left-right direction. The lower end side of each leg portion 32 is fixed to the turning frame F, and the top end side of each leg portion 32 is The plate 31 is fixed.
The main bonnet portion 14 covers the upper surface and the front surface of the device arrangement space such as the engine and is attached and fixed to the support frame 30, and the left side surface of the device arrangement space such as the engine and the main body portion 34 and the like. The side wall portion 35 that is fixedly attached and the rear surface side of the device arrangement space such as the engine are covered, and the upper front portion thereof is supported by the top plate 31 of the support frame 30 so as to be swingable up and down around the axis in the left-right direction. An opening / closing cover 36 and the like that can freely open and close the rear surface side of the device arrangement space are provided, and the right side surface of the main bonnet portion 14 is open.

As shown in FIGS. 4 to 8, the side bonnet portion 15 is disposed so as to oppose the right side surface of the cabin 10 and is located on the inner side in the left-right direction of the device arrangement space such as the fuel tank 24 and the hydraulic oil tank 25. An inner wall 37 that covers the side surface, a main body portion 38 that covers the front surface of the device arrangement space and the side surface on the outer side in the left-right direction, and an open / close cover 39 that covers the upper surface of the device arrangement space. The rear surface side of the device arrangement space to be covered is covered with an opening / closing cover 36 of the main bonnet portion 14.
The fuel tank 24 is arranged in the front part of the device arrangement space, a hydraulic oil tank 25 is arranged behind the fuel tank 24, and a battery 26 is located above the rear part of the fuel tank 24 and in front of the hydraulic oil tank 25. The radiator is arranged behind the hydraulic oil tank 25.

The inner side wall 37 has a length extending from the front end of the cabin 10 to the front end of the main body 34 of the main bonnet portion 14, and the side wall 38 b of the main body 38 of the side bonnet portion 15 It extends rearward from the wall 37, and the side surface on the left side of the rear side of the side bonnet part 15 is open. In this part, the device arrangement space covered by the main bonnet part 14 is the side bonnet part. 15 is in communication with the device arrangement space covered with 15.
The main body 38 of the side bonnet portion 15 is formed separately from the inner wall 37 and is detachably attached and fixed to the inner wall 37 and the swivel base 7.

The open / close cover 39 of the side bonnet portion 15 is attached so that the laterally outer side (right side) swings up and down by a hinge attached to a pair of front and rear hinge attachment portions 40 provided on the upper part of the inner wall 37. In addition, the upper surface side of the device arrangement space covered with the side bonnet portion 15 can be opened and closed.
As shown in FIG. 11, a support member 41 made of a belt-like plate material or the like moves downward on the inner side wall 37 in the left-right direction inner surface side (right side surface) from the front side of the upper end of the hydraulic oil tank 25 toward the front side. The lower end side of the support member 41 extends inward in the left-right direction through a gap between the lower end of the inner wall 37 and the upper surface of the swivel base 7 and supports the swing bracket 17. It is fixedly attached to a mounting portion 42 provided on the support bracket 16.

A bracket 43 for mounting and supporting the battery 26 is fixed to the support member 41, and the bracket 43 is fixedly attached to the upper front side of the hydraulic oil tank 25.
The inner wall 37 is attached and fixed to the upper part of the support member 41 with bolts or the like, and is also attached and fixed to a stay 44 provided on the lower end side of the support member 41, and the stay 45 fixed to the bracket 43. And is also fixedly attached to a stay 46 provided at the rear portion on the upper surface side of the hydraulic oil tank 25.
As shown in FIGS. 9 to 12, a catch tool 47 is provided on the lower side and a receiving member is provided on the upper side so that the front portion of the main body portion 38 is attached and fixed to the front side of the inner wall 37. 48 are provided respectively.

The catch tool 47 is formed of a spring plate material or the like, and includes a base portion 49 and an engaging portion 50.
The base portion 49 is fixedly attached to the right side surface of the mounting member 51 fixed to the inner surface of the inner side wall 37 by welding or the like with a bolt 52 and a nut 53, and the engaging portion 50 is an intermediate portion in the vertical direction of the base portion 49. It is comprised by the pair of front-and-rear clamping pieces 54 projected from the both front and rear edge portions to the outer side in the left-right direction.
Each of the front and rear clamping pieces 54 is formed in a curved shape in which a base side 54a and a left-right direction midway part 54b are convex toward the outer side in the front-rear direction (opposite side), and a main body described later between the left-right direction midway parts 54b The engaged portion 58a on the portion 38 side is fitted to the fitting portion 56.

In addition, the left and right end portions 54c of the front and rear clamping pieces 54 are widened so that the facing interval increases toward the outside in the left and right direction.
The receiving member 48 is formed of a plate material, and has a vertical wall 48a fixed to the inner surface of the inner wall 37 by welding or the like, and an upper wall 48b extending outward in the left-right direction from the upper end of the vertical wall 48a. A long insertion hole 57 is formed in the upper wall 48b so as to extend in the left-right direction. The upper wall 48b serves as a receiving portion 48b for receiving a receiving portion 59b on the main body portion 38 side described later.
A catching tool 58 is provided on the lower side of the front wall portion 38a of the main body portion 38 of the side bonnet portion 15. The catching tool 58 is formed of a bar and has a vertical portion 58a having a vertical axis. And upper and lower lateral portions 58b extending forward from the upper and lower ends of the longitudinal portion 58a. The ends of the upper and lower lateral portions 58b are welded to the inner surface of the front wall portion 38a of the main body portion 38. The vertical portion 58a of the catched tool 58 is an engaged portion 58a that is pushed into the engaging portion 50.

In addition, a receiving member 59 is provided on the upper side of the front wall portion 38 a of the main body portion 38 of the side bonnet portion 15.
The receiving member 59 is formed of a plate material, and a vertical wall 59a that is fixed to the inner surface of the front wall portion 38a of the main body portion 38 by welding or the like, and an upper wall that extends rearward from the upper end of the vertical wall 59a. 59b, and the upper wall 59b is formed with a long insertion hole 60 extending in the front-rear direction. The upper wall 59b serves as a receiving portion 59b received by the receiving portion 48b.
Further, the received portion 59b is attached and fixed to the receiving portion 48b by a bolt that passes through the insertion hole 60 of the received portion 59b and the insertion hole 57 of the receiving portion 48b and is screwed into the nut.

The side wall portion 38b of the main body portion 38 of the side bonnet portion 15 is formed so as to gradually increase in height toward the rear side, and the rear end side of the main body portion 38 extends from the upper edge side to the left side. An extended rear upper wall 38 c is formed. The rear upper wall 38 c is placed on the right end side of the top plate 31 of the support frame 30 and is fixedly attached to the top plate 31 by bolts 61.
The lower part in the longitudinal direction of the side wall part 38 b of the main body part 38 and the lower part on the rear end side of the side wall part 38 b of the main body part 38 are fixedly attached to the stay 62 provided on the swivel base 7 with bolts 63. ing.

In the case of the above configuration, when the main body 38 of the side bonnet portion 15 is attached to the inner wall 37 and the swivel base 7, first, the main body 38 is moved from the laterally outward side to the laterally inward side. The engaged portion 58a of the main body portion 38 is pushed between the front and rear clamping pieces 54 of the engaging portion 50 from the outer side in the left-right direction.
At this time, the front and rear clamping pieces 54 are elastically deformed and the engaging portion 50 is elastically expanded while the engaged portion 58a is pushed between the front and rear holding pieces 54, and the engaged portion 58a is engaged with the engaging portion. When the fitting part 56 of 50 is fitted, the front and rear clamping pieces 54 are restored, whereby the front side of the main body part 38 is easily attached to the inner side wall 37, and the main body part 38 of the side bonnet part 15 is assembled. (Or at the time of removal) is configured to be reduced.

The main body 38 is positioned in the front-rear direction in a state where the engaged portion 58a is pushed into the engaging portion 50, and the engaged portion 58a is vertically moved with respect to the engaging portion 50 within a predetermined range. It can be moved (position adjustment in the vertical direction is possible).
Further, when the engaged portion 58 a is pushed into the engaging portion 50, the received portion 59 b is positioned above the receiving portion 48 b, and the rear upper wall 38 c of the main body portion 38 is positioned above the top plate 31 of the support frame 30. To do.
Then, the downward movement of the main body portion 38 is restricted by causing the receiving portion 59b to be received by the receiving portion 48b and the rear upper wall 38c of the main body portion 38 to be received by the top plate 31 of the support frame 30. Positioning of the portion 38 in the vertical direction is performed.

  In this state, the received part 59b is attached to the receiving part 48b, the rear upper wall 38c of the main body part 38 is attached to the top plate 31 of the support frame 30, and the middle part in the front-rear direction of the side wall part 38b of the main body part 38, and The lower part on the rear end side of the side wall 38 b of the main body 38 is attached and fixed to the stay 62.

It is a right view of a working machine. It is a front view of a working machine. It is a top view of a working machine. It is a right view of a swivel stand etc. It is a top view of a turning board and a bonnet. It is a rear view of a swivel stand and a bonnet. It is a top view of a side bonnet part. It is a rear view of a side part bonnet part. It is a top view of the attachment part with respect to the inner wall of a side part bonnet part. It is a right view of the attaching part with respect to the inner wall of a side part bonnet part. It is a side view which shows the support structure of an inner wall. It is a perspective view of a side part bonnet part.

Explanation of symbols

7 swivel base 10 cabin 15 side bonnet part (bonnet)
30 Support Frame 37 Inner Wall 38 Main Body 38c Rear Upper Wall 48b Receiving Part 58a Engaged Part 59b Receiving Part

Claims (3)

  A cabin (10) is mounted on a swivel (7) that can be swung around a vertical axis, and a bonnet (15) is provided on the side of the cabin (10) to cover an arrangement space of the equipment. 15) is an inner wall (37) that is disposed in opposition to the side surface of the cabin (10) and covers the side surface on the inner side in the left-right direction of the device arrangement space, and the front surface of the device arrangement space and the outer side in the left-right direction. A main body portion (38) that covers the side surface of the inner wall (37). The main body portion (38) is formed separately from the inner side wall (37), and the engaged portion (58a) provided at the front portion is disposed inside. A bonnet device for a working machine, wherein the front part of the main body (38) is attached by being pushed into the engaging part (50) provided on the wall (37) from the outer side in the left-right direction. .   The main body (38) is positioned in the front-rear direction and is movable in a predetermined range in the vertical direction when the engaged portion (58a) is pushed into the engaging portion (50), and is moved to the inner wall (37). The downward movement of the front portion of the main body portion (38) is restricted by allowing the receiving portion (48b) provided to receive the received portion (59b) provided at the front portion of the main body portion (38). A bonnet device for a work machine, characterized in that it is configured as described above.   The rear upper wall (38c) of the main body (38) is supported by the support frame (30) fixed to the swivel base (7) so that the downward movement of the rear of the main body (38) is restricted. It is comprised, The bonnet apparatus of the working machine characterized by the above-mentioned.

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