JP5154466B2 - Bonnet device for turning work machine - Google Patents

Description

  The present invention relates to a bonnet device for a turning work machine.

Conventionally, a side bonnet that is formed long in the front-rear direction on the right side of the swivel, a rear bonnet disposed adjacent to the rear side of the side bonnet on the rear side of the swivel, and the rear bonnet and the driver's seat A swivel working machine such as a backhoe having a fixed bonnet disposed on the left side of the side bonnet is known.
In this swivel work machine, the front upper part of the bonnet is attached to the support frame so as to be pivotable and openable around the axis center in the left-right direction via a hinge member. It is possible to release from. Further, the inner surface of the bonnet is then brought into contact with a seal member attached to the support frame side to partition the engine room from the outside (see Patent Document 1).

JP 2001-090110 A

The rear bonnet of the above conventional turning work machine has an arc shape as a whole in a plan view, and also has a concave and convex shape in which a midway in the vertical direction bulges backward in a side view. It is hard to say that the strength is sufficient against impact.
In view of the above, the present invention provides a turning work machine capable of increasing the strength of a bonnet by providing a partition plate that partitions the engine room and the outside thereof on the inner surface of a bonnet that can be freely opened and closed. An object is to provide a bonnet device.

In order to achieve the above object, the present invention employs the following technical means.
First, the engine 3 is mounted on the rear part of the swivel base 2, and a radiator 4 and a cooling fan 5 are provided on one of the left and right sides of the engine 3, and a pair of left and right rear leg parts 6a, 6b and left and right rear leg parts 6a, 6b are provided. A support frame 6 having an upper frame 6 c that connects the upper part of the engine 3 above the engine 3 is provided, and a rear bonnet 7 that can be opened and closed at the rear of the engine 3, and side bonnets 8 a disposed on the left and right sides of the rear bonnet 7. 8b, and left and right partition plates 10a, 10b separating the engine room 9 facing the left and right rear leg portions 6a, 6b and arranging the engine 3 from the outside on the inner surface of the rear bonnet 7 It is characterized by providing.

Second, each of the left and right partition plates 10a and 10b protrudes forward from the inner surface of the rear bonnet 7 and has a front edge formed in a straight line. The front edges of the partition plates 10a and 10b are the rear bonnet 7 It is characterized by being arranged substantially in parallel along the flat rear surfaces 60a, 60b of the left and right rear leg portions 6a, 6b of the support frame 6 when closed.
Third, an upper bonnet 12 is provided on the upper frame 6c of the support frame 6 so as to cover the upper side of the engine 3. The upper ends of the partition plates 10a and 10b are disposed on the inner surface of the rear bonnet 7 facing the upper bonnet 12. An upper seal attaching member 13 that connects and partitions the engine room 9 from the outside is provided.

Fourthly, a counterweight 14 is attached to the rear end of the swivel base 2, and the engine 10 extends between the lower portions of the partition plates 10a and 10b at the lower part of the inner surface of the rear bonnet 7 facing the rising surface 15 of the counterweight 14 and the engine. A lower seal attaching member 16 for partitioning the room 9 from the outside is provided.
Fifth, an engine room 9 in which the engine 3 is arranged on the swivel base 2 is formed. The engine room 9 can be opened and closed by an open / close bonnet 7 and a support frame 6 that pivotally supports the open / close bonnet 7 is provided. The frame 6 has legs that straddle the engine 3, and the inner surface of the opening / closing bonnet 7 faces the legs 6 a and 6 b located on the outer peripheral side of the swivel base 2 among the legs of the support frame 6. In addition, partition plates 10a and 10b for partitioning the engine room 9 from the outside are provided.

Thus, by providing the partition plates 10a and 10b facing the rear legs 6a and 6b of the support frame 6 on the inner surface of the rear bonnet 7, the engine room 9 and the outside thereof are partitioned and the strength of the rear bonnet 7 is increased. be able to.
Even if the rear legs 6a and 6b of the support frame 6 are erected on the swivel base 2 with a slight inclination from the vertical, it is possible to increase the strength of the rear bonnet 7 while ensuring the sealing performance of the engine room 9. it can.
Furthermore, the upper hood 12 is provided on the inner surface of the upper part of the rear bonnet 7 so as to face the upper bonnet 12 at the rear side, whereby the strength of the rear bonnet 7 can be increased while improving the sealing performance of the engine room 9. .

And by providing the lower seal mounting member 16 facing the rising surface 15 of the counterweight 14 on the inner surface of the lower part of the rear bonnet 7 over the left and right, the sealing performance of the engine room 9 is improved and the strength of the rear bonnet 7 is increased. Further can be done.
Further, by providing the partition plates 10a and 10b facing the leg portions 6a and 6b of the support frame 6 on the inner surface of the opening and closing bonnet 7, it is possible to partition the engine room 9 from the outside and increase the strength of the opening and closing bonnet 7. it can.

  According to the present invention, the strength of the bonnet can be increased by providing the partition plate that partitions the engine room and the outside thereof on the inner surface of the bonnet that can be freely opened and closed.

The AA arrow directional cross-sectional view in FIG. 2 of the bonnet apparatus which concerns on this invention. The principal part rear view of a bonnet apparatus. The principal part top view of a bonnet apparatus. The side view of the bonnet apparatus of a turning working machine. The rear view of a bonnet apparatus. The top view of a bonnet apparatus. The side view of the support frame of a turning working machine. The rear view of a support frame. The top view of a support frame. The perspective view of the opened bonnet apparatus. The whole side view of a turning work machine.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIGS. 4 to 6 and 11 show an ultra-small turning type turning work machine 31 including the bonnet device 1 according to the embodiment of the present invention.
The turning work machine 31 includes a lower traveling device 32 constituted by a crawler traveling device and an upper turning body 33.
The swivel body 33 includes a swivel base 2 supported on a traveling device 32 via a swivel bearing 34 so as to be rotatable about a vertical swivel axis X, and an engine 3 and a radiator 4 provided on the swivel base 2. A driver's seat 35, an excavator 36, a fuel tank 37, a hydraulic oil tank 38, and the like are included.

The driver's seat 35 is disposed in the vicinity of the left side of the turning axis X, and a traveling device control lever 39 for operating the traveling device 32 is provided on the front side of the driver's seat 35. Excavator operation levers 40 for operating the excavator 36 are arranged on the left and right sides of the driver seat 35.
The swivel base 2 includes a swivel frame 41 serving as a skeleton, a counterweight 14 which is attached to the rear end side of the swivel frame 41 and constitutes the rear part of the swivel base 2 and which balances the weight with the excavator 36. The main structure is provided with a revolving cover 42 that covers the front side and the front side of the counterweight 14 and is attached to the left and right side surfaces of the revolving frame 41.

In addition, a rising surface 15 that faces a lower end portion of an inner surface of a rear bonnet (opening / closing bonnet) 7 described later is formed at the center of the counterweight 14 in the left-right direction.
The swivel frame 41 has a swivel board 43 made of a thick plate that constitutes the bottom of the swivel base 2. The swivel frame 41 is located on the right side of the swivel board 43 at a position near the center in the left-right direction. A pair of left and right vertical ribs 44 extending to the left and right vertical ribs 44 are provided, and a boom mounting portion 46 is provided between the left and right vertical ribs 44 so that the base (lower part) of the boom 45 of the excavator 36 is swingably mounted about the left and right axes. Yes.

On the upper surface of the swivel base 2, installed devices such as the engine 3, the radiator 4, tanks such as a fuel tank 37 and a hydraulic oil tank 38, a control valve 47, and a battery protrude upward. A fuel tank 37 is installed on the left side of the swivel base 2, and a hydraulic oil tank 38 and a control valve 47 are installed on the right side of the swivel base 2. The engine 3, the radiator 4, the tanks, and the like are covered with a bonnet device 1 (bonnet 51), and the bonnet 51 is supported by a support frame 6.
As shown in FIGS. 7 to 10, the support frame 6 is formed of a plate material or a pipe material or the like, and includes a pair of left and right rear leg portions 6a and 6b, a pair of left and right front leg portions 6d and 6e, and these front and rear leg portions. An upper frame 6c that connects the upper portions of 6a, 6b, 6d, and 6e above the engine 3 is provided. An upper bonnet 12 is attached to the upper frame 6c.

Further, the support frame 6 has a four-column frame shape with front and rear, left and right legs 6a, 6b, 6d, and 6e so as to straddle the engine 3, and the left and right rear leg parts 6a and 6b are particularly swivel bases. 2 is set up substantially vertically. Thereby, the useless space behind the engine 3 can be reduced, and the length of the support frame 6 in the front-rear direction can be shortened as much as possible.
The left and right rear leg portions 6a and 6b of the support frame 6 are formed such that rear surfaces 60a and 60b are flat and substantially vertical when the rear bonnet (opening / closing bonnet) 7 is closed.
Of the legs 6a, 6b, 6d, 6e of the support frame 6, the leg located on the outer periphery side of the swivel base 2 is the left rear leg 6a or the right rear leg 6b, and the legs 6a, 6b. 6d, 6e, the outer surface of the leg portion located on the outer periphery side of the swivel base 2 is the rear surface 60a of the left rear leg portion 6a or the rear surface 60b of the right rear leg portion 6b.

As shown in FIGS. 1 to 10, the bonnet device 1 (bonnet 51) is made of sheet metal, and covers an upper bonnet 12 that covers the front upper side of the engine 3, and a rear lower side of the upper bonnet 12 that is behind the engine 3. A rear bonnet 7 that can be freely opened and closed (opening / closing bonnet) 7, side bonnets 8 a and 8 b that are arranged on the left and right sides of the bonnet 7, and a front bonnet 52 that covers the radiator 4, the control valve 47 and the like. ing.
Inside the bonnet 51, an engine 3 and a radiator 4 are provided on the right side of the engine 3. An engine room 9 in which the engine 3 is arranged and a radiator ventilation room 53 on the right side of the engine room 9 are formed. ing. In addition, a cooling fan 5 is provided between the engine 3 and the radiator 4 to take outside air into the radiator ventilation room 53 and guide it to the engine room 9 through the radiator 4.

  Specifically, in the engine room 9, the engine 3 is disposed sideways, the radiator 4 is disposed on the right side of the engine 3, and a multiple hydraulic pump 49 is drivably mounted on the left side of the engine 3. The radiator 4 is attached to the support frame 6, and a fan shroud 54 is provided on the engine 3 side of the radiator 4. A cooling fan 5 is attached to the engine 3. The cooling fan 5 is of a suction type, and sucks outside air into the engine room 9 through the intake hole 55 of the right side bonnet 8 b and It cools and the hot air in the engine room 9 is discharged to the outside from the discharge hole 56 at the bottom of the swivel base 2.

As shown in FIGS. 4 to 6 and 10, the upper bonnet 12 covers the engine 3 from above and from the front, and the lower surface thereof is attached to the upper surface of the upper frame 6 c of the support frame 6. The upper bonnet 12 is located below the driver's seat 35, and a rear end surface 57 is formed at the rear end of the upper bonnet 12 so as to face an upper end portion of the inner surface of the rear bonnet 7 described later and in a plan view. Has been.
The rear bonnet 7 has an arc shape as a whole in a plan view, and has a shape in which a midway portion in the vertical direction bulges rearward in a side view. In addition, the rear bonnet 7 is pivotally supported at two positions on the left and right sides of the rear bonnet 7 on the lower surface of the upper frame 6c of the support frame 6 via the horizontal shaft 11 of the pivotal support 58 such as a hinge. It covers the back of the engine room 9. That is, the engine room 9 can be opened from the rear by swinging the rear bonnet 7 around the horizontal axis 11 and opening it upward. Further, a locking tool 59 that locks the closed state with the locking tool 14 a of the counterweight 14 is provided at the rear lower part of the inner surface of the rear bonnet 7.

Thereafter, a pair of left and right partition plates 10a and 10b, an upper seal mounting member 13, and a lower seal mounting member 16 are provided on the inner surface of the bonnet 7.
As shown in FIGS. 1 to 3, the left and right partition plates 10 a and 10 b are rib-shaped plates that face the rear of the left and right rear leg portions 6 a and 6 b at the left and right ends of the inner surface of the rear bonnet 7. The position is fixed by welding or the like along the vertical direction.
Specifically, the left and right partition plates 10a and 10b are formed on the rear bonnet 7 so as to protrude forward from the inner surface thereof, and the front edges of the left and right partition plates 10a and 10b are formed linearly. The front edges of the left and right partition plates 10a and 10b are substantially parallel to the flat rear surfaces 60a and 60b of the left and right rear leg portions 6a and 6b of the support frame 6 described above when the rear bonnet 7 is closed. In addition, the front edge of each partition plate 10a, 10b may be slightly inclined from front to back and from side to side. That is, when the rear bonnet 7 is closed, the front edges of the partition plates 10a and 10b are formed to be substantially vertical.

Moreover, each partition plate 10a, 10b is substantially orthogonal to the rear surfaces 60a, 60b of the left and right rear leg portions 6a, 6b of the support frame 6 in plan view. The left and right rear leg portions 6a and 6b of the support frame 6 may be slightly inclined from front to back and right and left from the vertical to the swivel base 2, and the partition plates 10a and 10b are rear surfaces 60a of the left and right rear leg portions 6a and 6b. , 60b may be slightly inclined around the front edge of each partition plate 10a, 10b from the state orthogonal to 60b.
Elongated left and right seal members 61a and 61b that are in contact with the rear surfaces 60a and 60b of the left and right rear legs 6a and 6b of the support frame 6 are attached to the front edges of the left and right partition plates 10a and 10b, respectively. In the following, the seal member is a trim, a trim seal with a cushioning tube, or the like.

Therefore, by providing the left and right partition plates 10a and 10b so as to extend substantially perpendicular to the rear surfaces 60a and 60b of the rear legs 6a and 6b and along the vertical direction, The strength of the direction can be increased, and it is difficult to be deformed against an external impact.
At the same time, since the left and right partition plates 10a and 10b are provided so as to partition the engine room 9 and the outside behind the rear leg portions 6a and 6b, the sealing performance of the engine room 9 is improved. The outside air sent from the cooling fan 5 can be efficiently introduced into the engine room 9, and the outside air can be discharged at a position where the heat in the engine room 9 is kept as far as possible from the intake hole 55 of the right bonnet 8b.

Further, the sealing members 61a and 61b at the front edges of the left and right partition plates 10a and 10b are in contact with the rear surfaces 60a and 60b of the rear legs 6a and 6b, thereby further improving the airtightness of the engine room 9.
The engine room 9 is also closed in front of the left rear leg 6a of the support frame 6 together with the left partition plate 10a and the left seal member 61a, and the hot air in the engine room 9 is in the lower part of the swivel base 2. It is discharged from the discharge hole 56 to the outside and does not flow into the left side of the swivel base 2 having the fuel tank 37, the hydraulic pump 49, and the like.

As shown in FIGS. 1 to 6 and 10, the upper seal mounting member 13 is a rib-shaped plate body, and the left and right partition plates 10 a are arranged at positions facing the rear of the upper bonnet 12 at the upper end portion of the inner surface of the rear bonnet 7. 10b are fixed by welding or the like over the left and right directions so as to connect the upper ends of the respective terminals 10b. When the rear bonnet 7 is closed, the upper seal mounting member 13 is substantially orthogonal to the rear end surface 57 of the upper bonnet 12, and the front edge of the upper seal mounting member 13 is a circle in plan view along the rear end surface 57 of the upper bonnet 12. It is formed in an arc shape.
An elongated upper seal member 62 that abuts against the rear end surface 57 of the upper bonnet 12 is attached to the front edge of the upper seal attachment member 13.

Accordingly, the strength of the rear bonnet 7 in the front-rear direction and the left-right direction is increased by providing the upper seal mounting member 13 so as to extend substantially perpendicular to the rear end surface 57 of the upper bonnet 12 and along the left-right direction. It is difficult to be deformed against an external impact.
At the same time, since the upper seal mounting member 13 is provided behind the upper bonnet 12 so as to partition the engine room 9 and the outside thereof, the sealing performance of the engine room 9 is further improved, and the heat in the engine room 9 is reduced. Leakage from above the rear bonnet 7 is prevented.
Furthermore, the upper seal member 62 at the front edge of the upper seal attachment member 13 is in contact with the rear end surface 57 of the upper bonnet 12, thereby further improving the airtightness of the engine room 9.

  The lower seal mounting member 16 is a rib-like plate body, and a midway portion in the left-right direction extends substantially straight in the left-right direction when viewed from the back, and both left and right end portions are formed obliquely upward and outward in the left-right direction. ing. The left and right ends of the lower seal mounting member 16 are positioned outward in the left-right direction at the lower ends of the left and right partition plates 10a and 10b. Further, the lower seal mounting member 16 is welded in the left-right direction so as to connect the lower ends of the left and right partition plates 10a, 10b to a position facing the rising surface 15 of the counterweight 14 at the lower end portion of the inner surface of the rear bonnet 7 on the rear side. It is fixed with. Further, when the rear bonnet 7 is closed, the lower seal mounting member 16 is substantially orthogonal to the rising surface 15 of the counterweight 14, and the front edge of the lower seal mounting member 16 is a circle in plan view along the rising surface 15 of the counterweight 14. It is formed in an arc shape.

An elongate lower seal member 63 that is in contact with the rising surface 15 of the counterweight 14 is attached to the front edge of the lower seal attachment member 16.
The counterweight 14 is made of a casting made of a metal such as steel or lead. As shown in FIGS. 1 and 4 to 6, the central portion in the left-right direction is shaped along the lower end of the rear bonnet 7. ing. A horizontal surface is formed at the center in the left-right direction of the counterweight 14 located below the lower end of the rear bonnet 7 so as not to hinder the opening and closing of the rear bonnet 7, and the lower end of the rear bonnet 7 is formed at the front edge of the horizontal plane. A flat rising surface 15 rising upward along the inner surface is provided across the left and right sides. Further, the counterweight 14 has a substantially arc shape with the turning axis X as the center of curvature as a whole, and the rear end is located outside the rear end of the rear bonnet 7 in plan view. That is, when the turning work machine 31 is turned, the counterweight 14 collides with or comes into contact with an obstacle (wall, planting, etc.) before the rear bonnet 7, and the external impact on the rear bonnet 7 is reduced as much as possible.

Therefore, by providing the lower seal mounting member 16 so as to extend substantially perpendicular to the rising surface 15 of the counterweight 14 and along the left-right direction, the strength of the rear bonnet 7 in the front-rear direction and the left-right direction is further increased. It is difficult to be deformed against an external impact.
At the same time, the lower seal mounting member 16 is provided behind the rising surface 15 so as to partition the engine room 9 and the outside thereof, so that the sealing performance of the engine room 9 is improved and the heat in the engine room 9 is increased. Leaking from the bottom of the bonnet 7 is prevented. Furthermore, the lower seal member 63 at the front edge of the lower seal attachment member 16 abuts against the rising surface 15 of the counterweight 14, thereby further improving the airtightness of the engine room 9.

As shown in FIGS. 4 to 6, the left and right side bonnets 8 a and 8 b are formed in an arc shape substantially concentric with the rear bonnet 7 in plan view.
The left bonnet 8 a is provided so as to cover the left rear of the engine 3 along the outer periphery of the turntable 2 from the left side of the rear bonnet 7 to the left outer side of the driver seat 35. Further, a plurality (six in this embodiment) of air holes 64 are provided in the rear part of the left bonnet 8a to communicate the inside of the engine room 9 with the outside thereof. Further, the left bonnet 8a has a left front end attached to the upper surface of the fuel tank 37 inside the bonnet 51 with a screw or the like via a stay, and a rear right end (rear fixing portion) 65a is a rear surface of the left rear leg 6a. It is attached to 60a with screws or the like. The rear fixing portion 65a is located in front of the left end portion of the rear bonnet 7, and is completely covered when the rear bonnet 7 is closed.

The right side bonnet 8b is provided so as to cover the right rear side of the engine 3 along the outer periphery of the swivel 2 from the right side of the rear bonnet 7 to the right outward extension of the driver's seat 35. In addition, an air intake hole 55 that communicates the radiator ventilation room 53 and the outside thereof is provided substantially at the center of the right side bonnet 8b, and a mesh net such as a metal mesh is attached to the air intake hole 55.
The right bonnet 8b has a front upper portion covered by the front bonnet 52 from above, and the right bonnet 8b positioned below the grip 52c so as to easily grip a grip 52c described later of the front bonnet 52. The front upper part is recessed inward in the left-right direction. A key hole 66 in the locking device of the front bonnet 52 is provided in the approximate center of the recess.

The inside of the front upper part of the right bonnet 8b is attached to the top plate of the radiator ventilation room 53 inside the bonnet 51 from above with screws or the like via a stay. This stay is located below the rear part of the front bonnet 52 and is completely covered when the front bonnet 52 is closed. Further, the rear left end portion (rear fixing portion) 65b of the right side bonnet 8b is attached to the rear surface 60b of the right rear leg portion 6b with a screw or the like. The rear fixing portion 65b is located in front of the right end portion of the rear bonnet 7, and is completely covered when the rear bonnet 7 is closed.
That is, the stay of the right bonnet 8b is not exposed unless the front bonnet 52 is opened, and the rear fixing portion 65b of the right bonnet 8b is not exposed unless the rear bonnet 7 is opened.

Therefore, unless the rear bonnet 7 and the front bonnet 52 are unlocked and opened, the right side bonnet 8b cannot be removed, and there is no need to separately provide a locking tool for the right side bonnet 8b. Can be reduced.
As shown in FIGS. 4, 6, and 11, the front bonnet 52 is formed long in the front-rear direction as a whole on the right side of the swivel base 2 (to the right of the driver's seat 35), and includes an upper cover 52a and a right side cover 52b. Mainly composed.
The upper cover 52a of the front bonnet 52 has a right edge formed in a substantially arc shape in plan view, and a left edge formed in a substantially straight line in the front-rear direction. The upper cover 52a has a front portion extending downward, and is formed in a substantially L shape in a side view.

The inner surface of the front end portion of the upper cover 52a is pivotally supported on the upper surface of the right front portion of the swivel base 2 via a horizontal shaft of a pivotal support such as a hinge, and the front bonnet 52 is configured as a radiator 4 as a whole. The hydraulic oil tank 38, the control valve 47, etc. are configured to cover the upper, front and right sides. That is, the hydraulic oil tank 38, the control valve 47, the radiator ventilation room 53, and the like can be opened from above and from the front by swinging the front bonnet 52 around the horizontal axis and opening it forward and upward.
On the right outside of the rear part of the upper cover 52a, an opening / closing grip 52c integrally formed so as to project rightward is provided. On the inner surface of the rear part of the upper cover 52a, the top of the radiator ventilation room 53 is provided. A locking tool for locking the closed state with the locking tool provided on the upper surface of the plate is provided.

The right side cover 52b of the front bonnet 52 is formed in an arc shape substantially concentric with the rear bonnet 7 in plan view. The right side cover 52b is provided so as to cover the right side of the radiator 4 and the like along the outer periphery of the swivel base 2 from the front side of the right side bonnet 8b to the right front end of the swivel base 2.
In addition, this invention is not limited to embodiment mentioned above. Each configuration of the bonnet device 1 or the like, or the overall structure, shape, dimensions, and the like can be appropriately changed in accordance with the spirit of the present invention.

The driver's seat 35 and the like are arranged on the right side of the swivel base 2, and the radiator 4, the cooling fan 5, the front bonnet 52, the radiator ventilation room 53, the intake holes 55, the air holes 64 and the like are arranged on the left side of the swivel base 2. Accordingly, the support frame 6, the left and right side bonnets 8a, 8b, and the like may have a shape that is reversed from side to side.
The bonnet device 1 (bonnet 51) may be entirely or partially made of hard resin. When the rear bonnet 7 is made of hard resin, the partition plates 10a and 10b, the upper seal mounting member 13 and the lower seal mounting member 16 are integrally formed with the rear bonnet 7.

The partition plates 10a and 10b of the rear bonnet 7 and the upper seal mounting member 13 may be formed as a single plate-like body in a substantially U-shape when viewed from the back. Further, the left and right seal members 61 a and 61 b and the upper seal member 62 are integrated, and one substantially U-shaped seal member is attached over the front edges of the left and right partition plates 10 a and 10 b and the front edge of the upper seal attachment member 13. It may be.
Similarly, the partition plates 10a and 10b of the rear bonnet 7 and the lower seal mounting member 16 may be formed as a single plate-like body in a substantially U shape in the back view, and the lower seal member 63 and the left and right seal members 61a and 61b. A substantially U-shaped seal member may be attached.

Further, the partition plates 10a and 10b, the upper seal mounting member 13 and the lower seal mounting member 16 of the rear bonnet 7 may be formed as a single plate-like body in a substantially rectangular shape in the rear view, and the upper seal member 62 and the left and right A substantially B-shaped seal member in which the seal members 61a and 61b and the lower seal member 63 are integrated may be attached.
The rear bonnet 7 may be provided with at least one of the left and right partition plates 10a, 10b, the upper seal mounting member 13, and the lower seal mounting member 16 on the inner surface thereof.
The rear bonnet 7 may be pivotally supported on the support frame 6 via a vertical axis.

  In the above-described embodiment, the engine room 9 is disposed behind the driver seat 35 and the radiator ventilation room 53 is disposed on the left and right sides (right side) of the engine room 9. The engine room 9 may be arranged (on the right side), and the radiator ventilation room 53 may be arranged around the engine room 9. The arrangement of the configuration related to the engine room 9 and the arrangement of the configuration related to the radiator ventilation room 53 may be And the left-right direction may be replaced.

1 Bonnet device (bonnet)
2 Swivel 3 Engine 4 Radiator 5 Cooling Fan 6 Support Frame 6a, 6b Rear Leg 6c Upper Frame 7 Rear Bonnet (Opening / Closing Bonnet)
8a, 8b Side bonnet 9 Engine room 10a, 10b Partition plate 11 Horizontal shaft 12 Upper bonnet 13 Upper seal mounting member 14 Counterweight 15 Counterweight rising surface 16 Lower seal mounting member

Claims (5)

The engine (3) is mounted on the rear part of the swivel base (2), the radiator (4) and the cooling fan (5) are provided on the left and right sides of the engine (3), and a pair of left and right rear legs (6a, 6b) A support frame (6) having an upper frame (6c) that connects the upper parts of the left and right rear legs (6a, 6b) above the engine (3) is provided, and can be opened and closed at the rear of the engine (3). A bonnet (7), and then side bonnets (8a, 8b) arranged on the left and right of the bonnet (7),
On the inner surface of the rear bonnet (7), left and right partition plates (10a, 10b) that separate the engine room (9) facing the left and right rear legs (6a, 6b) and the engine (3) from the outside. ), A bonnet device for a turning work machine.   Each of the left and right partition plates (10a, 10b) protrudes forward from the inner surface of the rear bonnet (7) and has a front edge formed in a straight line. The front edges of these partition plates (10a, 10b) The hood (7) is disposed substantially parallel along the flat rear surfaces (60a, 60b) of the left and right rear legs (6a, 6b) of the support frame 6 when the bonnet (7) is closed. The bonnet device of the turning work machine described.   An upper bonnet (12) is provided on the upper frame (6c) of the support frame (6) so as to cover the upper side of the engine (3), and the upper bonnet (12) is opposed to the upper inner surface of the rear bonnet (7). The turning work according to claim 1 or 2, further comprising an upper seal mounting member (13) for connecting the upper ends of the partition plates (10a, 10b) and partitioning the engine room (9) from the outside. Bonnet device of the machine.   A counterweight (14) is attached to the rear end of the swivel base (2), and the partition plates (10a, 10b) are arranged on the lower part of the inner surface of the rear bonnet (7) facing the rising surface (15) of the counterweight (14). The lower work attachment part (16) which partitions off the engine room (9) and its exterior is provided between the lower parts of a), The turning working machine of any one of Claims 1-3 characterized by the above-mentioned. Bonnet equipment. An engine room (9) in which the engine (3) is disposed is formed on the swivel base (2). The engine room (9) can be opened and closed by an open / close bonnet (7), and the open / close bonnet (7) is pivotally supported. A support frame (6) is provided, the support frame (6) has legs that straddle the engine (3),
The inner surface of the opening / closing bonnet (7) is opposed to the leg portions (6a, 6b) located on the outer peripheral side of the swivel base (2) among the leg portions of the support frame (6) and the engine room (9). A bonnet device for a swing working machine, characterized in that a partition plate (10a, 10b) for partitioning the outside is provided.

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