JP2003064721A - Bonnet device of turning working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bonnet device of a turning working machine which can be taken in consideration so that it includes an operator's seat and a bonnet for covering equipment put on a swivel base provided to the revolving base turnable around the vertical axial center, the bonnet includes one side of the bonnet placed on the right side of the operator's seta and the other side of the bonnet placed on the left side of the rear of one side of the bonnet, one side of the bonnet comprises a body section equipped with an inspection opening section and fixed to the revolving base and having a cover body section in an openable manner, for a back hoe connecting the rear section side of the body section of one side of the bonnet to the other side of the bonnet at the back side of the inspection opening section, and that a connecting part can be covered by a simple structure with a good external appearance. SOLUTION: An extension section 58 extended so as to cover a connection part between the body section 46 of one side 38 of the bonnet and the other side 39 of the bonnet is provided to the cover body 47 across over the inspection opening section 45.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bonnet device for a swing working machine.

[0002]

2. Description of the Related Art Conventionally, there is a backhoe as a revolving work machine. This backhoe is provided with a revolving base on a crawler type traveling device which is revolvable around an axis in the vertical direction. Devices such as a radiator, a hydraulic oil tank, and a fuel tank, a hood that covers a space where these devices are arranged, and a driver's seat are provided. The bonnet is located on the right side of the driver's seat, and is located on one side of the bonnet that covers the hydraulic oil tank, the radiator, the fuel tank, etc., and on the left side of the rear part of the bonnet on one side. And the other side of the hood.

The one side of the bonnet is composed of a main body having an inspection opening in the upper part and a lid for closing the inspection opening so that the inspection opening can be opened and closed. It is connected to the other side of the bonnet on the rear side of the inspection opening.

[0004]

In the conventional backhoe, the connecting portion between the rear side of the main body of one side of the bonnet and the other side of the bonnet is exposed, which is not preferable in appearance. Therefore, it is conceivable to cover the connecting portion with something, but if a cover for covering the connecting portion is separately provided, not only the cost increases but also the maintenance of the inside of the bonnet causes the connecting portion to be damaged. In order to be able to disassemble the cover, it is necessary to consider the mounting structure of the cover, which complicates the structure and requires design considerations.

In view of the above problems, it is an object of the present invention to provide a bonnet device for a swivel work machine, which is designed to cover the connecting portion with a simple and good-looking structure.

[0006]

The technical means taken by the present invention to solve the technical problems are provided in a swivel base which is rotatable about an axis in the vertical direction, a driver's seat and a swivel base. And a bonnet for covering the device, the bonnet includes a bonnet one side portion arranged on one side of the driver's seat and a bonnet other side portion arranged on the other side of a rear portion of the bonnet one side portion. In addition, the bonnet one side has a main body part having an inspection opening on the upper side and fixed to the swivel base, and a lid body that opens and closes the inspection opening of this main body part. The rear side of the main body of this one side of the bonnet is connected to the other side of the bonnet at the rear side of the opening for inspection, and the lid goes over the opening for inspection and the one side of the bonnet is connected. It was extended to cover the connecting part between the main body and the other side of the bonnet. Characterized in that it comprises a portion.

Further, it is preferable that the lid is made of resin. Further, the lid side is preferably openable and closable by pivoting the lid side of the lid body to the side wall of the main body portion of the bonnet one side portion on the lid side by a hinge so as to be vertically swingable. Further, the lid side of the lid is pivotally attached to a side wall of the body of the bonnet on one side of the bonnet so that the lid can swing up and down around an inclined shaft center that moves downward as it goes forward. Therefore, it is good that it can be opened and closed.

On the outer surface side of one side of the bonnet, a recess is provided from the outside toward the inside, and a recess extending from the main body to the lid is formed.
It is preferable that the key insertion portion of the lock that locks the lid body is provided in an immersive manner, and the portion on the lid body side of the concave portion serves as a handle portion for opening the lid body.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1 and FIG. 2, 1 is a small backhoe which is called a rear small turning type backhoe exemplified as a turning work machine, and the backhoe 1 turns around a lower traveling body 2 and a vertical turning axis X. It is mainly composed of a freely revolving upper structure 3 (machine) and an excavator 4. The undercarriage 2 rotatably supports an idler 6, a driving wheel 7, and a plurality of rolling wheels on both left and right sides of the track frame 5, and extends over the idler 6, the driving wheel 7, and a plurality of rolling wheels. A crawler that is mainly configured by winding a crawler belt 9, and by rotating the drive wheel 7 by a hydraulic motor or the like, the crawler belt is circulated and circulated so that the crawler belt can travel in the front-rear direction (left-right direction in FIG. 2). Type traveling device is adopted.

Further, a dozer 10 which can be vertically swung by a hydraulic cylinder is provided at the front part of the lower traveling body 2. The upper revolving structure 3 includes a revolving base 12 supported by the lower traveling structure 2 so as to be rotatable about a revolving axis X, an engine 13, a radiator 14 provided on the revolving base 12.
Hydraulic oil tank 15, fuel tank 16, battery 17,
Devices such as the hydraulic pump 18, the hydraulic control valve 19, the swing motor 20, and the bonnet 22 that covers these devices.
A driver's seat 23, a canopy 24 (or a cabin) that covers the upper part of the driver's seat 23, and the like.

The swivel base 12 is provided with a reinforcing rib and a bracket for mounting equipment on a swivel base plate 26 which is rotatably supported on the track frame 5 of the undercarriage 2 through a swivel bearing 25 about a swivel axis X. The swivel frame is provided, and a weight 11 is provided in the rear part of the swivel frame to configure the rear part of the swivel base 12 and to balance the weight of the excavator 4 in the front part. The front surface is covered with a swivel cover, and the central portion and the left side of the front surface of the upper surface of the swivel frame are covered with steps to form an arrangement space for various devices and the like.

A support bracket 28 for supporting the excavation device 4 is provided at the front part of the swivel base 12, and a swing bracket 29 is pivotally supported on the support bracket 28 so as to be swingable right and left around a vertical axis. The swing bracket 29 is swingable right and left by a hydraulic cylinder provided inside the swivel base 12. The excavator 4 is
A boom 31 whose base end side is swingably supported by a swing bracket 29 so as to be rotatable about an axis in the left-right direction.
An arm 32 pivotally supported on the tip end side of the boom 31 so as to be rotatable about an axis in the left-right direction and swingable; and a squeeze dumper attached to the tip end side of the arm 32. A bucket 33 (excavator) for performing excavation work is provided.

The boom 31 is swung by a boom cylinder 34 interposed between the swing bracket 29 and the boom 31, and the arm 32 is swung by an arm cylinder 35 interposed between the boom 31 and the arm 32. Is
The bucket 33 is swung by a bucket cylinder 36 interposed between the arm 32 and the bucket 33. Figure 1
As shown in FIG. 3, the driver's seat 23 is arranged at a substantially middle portion in the front-rear direction of the swivel base 12 and slightly to the left of the center in the left-right direction, and the engine 13 is arranged below the driver's seat 23 and slightly to the rear. Has been done.

On the left side of the engine 13, there is mounted a hydraulic pump 18 which supplies hydraulic oil to various hydraulic devices provided on the backhoe 1. Further, a radiator 14 is arranged on the right side of the engine 13, a hydraulic oil tank 15 for storing hydraulic oil is arranged in front of the radiator 14, and a fuel tank on the lower side is arranged on the front side of the hydraulic oil tank 15. 16 and the battery 17 is arranged on the upper side. Figure 3
As shown in FIG. 1, the engine 13, the radiator 14, the hydraulic oil tank 15, and the fuel tank 16 are arranged so as to project upward from the swivel base 12, and the hydraulic pump 18 and the battery 17 are arranged above the swivel base 12, Reference numeral 22 covers the equipment arrangement space above the upper surface of the swivel base 12.

As shown in FIGS. 1 to 9, the hood 22
Is a bonnet one side portion 38 arranged on the right side (one side) of the driver's seat 23 and a bonnet other side portion 39 arranged on the left side (other side) of the rear portion of the bonnet one side portion 38.
And a bonnet rear portion 40 arranged behind the bonnet one side portion 38 and the bonnet other side portion 39. The bonnet one side portion 38 covers the arrangement space of the radiator 14, the hydraulic oil tank 15, the fuel tank 16, the battery 17, and the like.
8, the right side face and the left side face are closed from the middle part to the front part, the upper face and the front face, and the rear parts of the rear face and the left side face are open, and the rear part of the left side face is the bonnet other side part 39. It is in communication with the space covered by.

The bonnet other side portion 39 mainly covers the arrangement space of the engine 13 and the hydraulic pump 18, and the bonnet other side portion 39 has its upper surface, front surface and left side surface closed, and the rear surface and right side. The surface is open, and the right side is in communication with the space covered by one side of the bonnet. The other side portion 39 of the bonnet and the driver's seat 23 overlap each other in the vertical direction, and a recess for arranging the driver's seat 23 is formed on the upper side of the other side portion 39 of the hood.

The bonnet rear portion 40 is arranged so as to cover the rear of the arrangement space of the engine 13, the hydraulic pump 18, the radiator 14, etc. (so as to close the rear side of the bonnet one side portion 38 and the bonnet other side portion 39). ing. In addition, a support frame 42 that supports the hood 22, the canopy 24, and the like is provided in the arranging space of the engine 13 and the like in the hood 22. This support frame 42
Is provided with a support wall 42A arranged on the lower surface side of the rear upper wall 43 of the bonnet other side portion 39, and a plurality of (three) support legs 42B supporting the support wall 42A. Is fixed to the swivel frame 12.

On the rear upper wall 43 of the bonnet other side portion 39,
The base of the canopy 24 is placed behind the driver's seat 23,
The base portion of the canopy 24 is attached and fixed to the support wall 42A of the support frame 42 through bolts together with the rear upper wall 43 of the bonnet other side portion 39. Bonnet rear 40
The upper wall front side of the support wall 42 of the support frame 42 is
A is pivotally attached to A through a hinge so as to be vertically swingable about an axial center in the left-right direction, and is openable and closable.

The bonnet one side portion 38 has an inspection opening 45 on the upper side thereof, and a main body portion 46 fixed to the swivel base 12, and an inspection opening portion 45 formed in the main body portion 46.
And a lid 47 for opening and closing. The one side portion 38 of the bonnet is formed so that the height thereof gradually decreases from the rear side toward the front side, and is formed in a smooth curved shape that is convex outward. The inspection opening 45 is formed to be large in the front-rear direction from the rear part to the front part of the bonnet side part 38, and when the lid 47 is opened, the radiator 14, the hydraulic oil tank 15, the battery 17, the fuel 17, and the fuel. The tank 16 is configured so that maintenance and the like can be performed.

Further, the inspection opening 45 is formed so as to extend from the upper surface side to the side surface in the left-right direction so that the height of the edge portion of the inspection opening 45 on the outer side in the left-right direction becomes low. The radiator 14, the hydraulic oil tank 15, the battery 17, the fuel tank 16 can be easily maintained from the outside in the left-right direction. Also, the body portion 4 of the bonnet one side portion 38
6 is made of sheet metal, can be provided at low cost, and is integrally formed with a front wall 46A, an outer wall 46B on the outer side in the left-right direction, and a rear upper wall 46C, and an inner side in the left-right direction (driver's seat 23
The inner wall 46D on the side) is formed as a separate body, and an appropriate portion is attached and fixed to the swivel base 12.

As shown in FIGS. 6 and 9 to 13, the upper rear end sides of the rear upper wall 46C and the inner side wall 46D of the main body portion 46 are the rear side of the inspection opening 45 and the other side portion 3 of the bonnet.
9 is connected to the rear upper wall 43. On the right end side of the rear upper wall 43 of the bonnet other side portion 39, the bonnet one side portion 3
8 is provided with a mounting wall 49 extending below the rear upper wall 46C of the main body 46, and the front side of the mounting wall 49 is superposed on the support wall 42A of the support frame 42. There is.

On the upper rear end side of the inner side wall 46D of the bonnet one side portion 38, there is provided a stay 50 formed in an L shape from an upper wall 50A and a front wall 50B extending downward from a front end of the upper wall. It is fixed, and the left side of the upper wall 50A of the stay 50 is superposed on the front side of the mounting wall section 49 of the rear upper wall 43 of the bonnet other side section 39. The rear upper wall 46C of the main body 46 of the bonnet one side portion 38 is superposed on the upper wall 50A of the stay 50. The main body 46 rear upper wall 46C of the bonnet one side portion 38 and the stay 50
Upper wall 50A and the rear upper wall 43 of the bonnet other side portion 39
The mounting wall portion 49 of the above is penetrated from above and is fastened together by a bolt 52 screwed into a screw hole 51 formed in the support wall 42A.
The upper rear end side of the rear upper wall 46C and the inner side wall 46D of the main body 46 of the bonnet one side portion 38 is the bonnet other side portion 39.
It is connected to the rear upper wall 43.

Further, the body portion 46 of the bonnet one side portion 38
The rear upper wall 46C and the upper wall 50A of the stay 50 penetrate the upper wall 50A and the upper wall 50A of the stay 50 from above.
It is fastened together by a bolt 54 screwed into a nut 53 fixed to the lower surface, whereby a rear upper wall 46C and an inner wall 46D of the main body 46 of the bonnet one side portion 38 are fixed.
Is connected to the upper rear end side of. As shown in FIGS. 6 to 8, the lid 47 is made of resin and is formed in a hollow shape by blow molding or the like, and the bonnet one side portion 38 is formed.
The material and structure make it difficult to transfer the heat inside to the outside.

The lid 47 has a pair of front and rear hinges 55 on the inner side in the left-right direction (on the side of the driver's seat 23) so that the main body portion 4 is covered.
6 is pivotally attached to the upper part of the inner side wall 46D of 6 so as to be vertically swingable, and the inspection opening 45 can be opened and closed by vertically swinging the lid 47. The hinge 55 includes the fixed piece 55A attached to the inner wall 46D side and the lid 4
The movable piece 55B is attached to the 7 side, and the fixed piece 55A is provided with a support shaft 55C that rotatably supports the movable piece 55B.

Further, each of the support shafts 55C is inclined so as to move downward as it goes forward, and the front hinge 55 is arranged at a position lower than the rear hinge 55, and the front and rear support shafts 55C are arranged. 55C is arranged coaxially.
Therefore, the lid body 47 is rotatable about an inclined axis Y that moves downward as it goes forward.
The inner wall 46D is provided with a tension rod 56 that supports the lid 47 in an open state.

Further, at the rear portion of the lid body 47, beyond the inspection opening portion 45, the main body portion 46 of the bonnet one side portion 38 is provided.
And a connecting portion between the bonnet other side portion 39 and a connecting portion between the rear upper wall 46C of the main body portion 46 of the bonnet one side portion 38 and the upper rear end side of the inner side wall 46D. The installation portion 58 is formed. In this extension portion 58,
As shown in FIGS. 10 to 13, in order to avoid interference with the heads of the bolts 52 and 54, a recessed portion 59 that is recessed upward from the lower surface is formed. The lower surface of the extended portion 58 and the main body The gap with the rear upper wall 46C of the portion 46 is considered to be as narrow as possible.

The recess 59 is formed so as to be open leftward and rearward. In the structure described above, the extending portion 58 extending from the lid 47 covers the connecting portion between the main body portion 46 of the bonnet one side portion 38 and the bonnet other side portion 39. Therefore, the appearance is neat and the design is good. When disassembling the bonnet 22 for maintenance or the like in the bonnet 22, if the lid body 47 is opened, the main body portion 46 of the bonnet one side portion 38, It is possible to expose the connecting portion with the other side portion 39 of the bonnet and the like.

Further, the lid 47 is pivotally supported on the inner side in the left-right direction so as to be vertically swingable and can be opened and closed, so that the main body portion 46 of the bonnet one side portion 38 and the bonnet other side portion 3 are provided.
The disassembling work and the like of the connecting portion with 9, etc. can be performed from the outer side in the left-right direction, and the work is easy, and the lid body 47 swings up and down around an inclined axis Y that moves downward as it goes forward. Therefore, when the lid body 47 is opened, the extension portion 58 has the main body portion 46 of the bonnet one side portion 38 and the bonnet other side portion 39.
When the connection portion between the main body portion 46 of the bonnet one side portion 38 and the bonnet other side portion 39 is disassembled, the extension portion is moved upward from the connection portion with the It is possible to prevent 58 from getting in the way.

As shown in FIGS. 8, 14 and 15, on the outer side surface of the bonnet one side portion 38 (the joint portion between the edge portion of the lid 47 and the edge portion of the inspection opening portion 45). A recess 61 is formed from the outside toward the inside, and a recess 61 extending from the main body 46 to the lid 47 is formed. This recess 61
A lock 64 of a lock device 63 that locks the lid 47 is provided in the portion 61A on the main body portion side, and an engaged piece 66 of the lock device 63 is fixed to the inside of the lid 47. .

In the portion 61A on the main body side of the recess 61,
The key insertion portion 64A of the lock 64 is arranged so as to be substantially immersive, and the engagement piece 64B of the lock 64 is the bonnet one side portion 38.
When the key is inserted into the key insertion portion 64A of the lock 64 and turned, the engaging piece 64B rotates, and the engaging piece 64B engages with the engaged portion 65A of the engaged piece 65. The lid 47 is configured to be locked by the fitting.
In the structure described above, the key insertion portion 63A of the lock device 63 is recessed in the portion 61A on the main body side of the recess 61, so that the key insertion portion 63A comes into contact with something. Can be prevented from being damaged.

Further, the portion 61B of the recess 61 on the lid 47 side.
Is a handle for hooking a finger or the like to open the lid 47. With a handle portion 61B formed of this recess,
By arranging the depression 61A into which the key insertion portion 63A is recessed so as to face each other, a finger or the like can be easily hooked on the handle 61B, and the vertical width H of the handle 61B can be reduced.

[0032]

According to the present invention, the swivel base which is rotatable about the vertical axis is provided with the driver's seat and the bonnet for covering the equipment mounted on the swivel base. It has a bonnet one side arranged on one side and a bonnet other side arranged on the other side of the rear part of this bonnet one side, and the bonnet one side has an opening for inspection on the upper side. A main body part which is provided with a part and is fixed to the swivel base,
The main body is provided with a lid that opens and closes the opening for inspection, and the rear side of the main body on one side of the bonnet is behind the inspection opening and is connected to the other side of the bonnet. The lid body is provided with an extension portion that extends beyond the inspection opening and covers the main body portion on one side of the bonnet and the connecting portion with the other side portion of the bonnet. Therefore, it is possible to cover the connecting portion between the main body on one side of the bonnet and the other side of the bonnet with a simple structure, and the appearance is also good.

Also, by opening the lid of one side of the bonnet, the connecting portion between the main body of the one side of the bonnet and the other side of the bonnet can be exposed, and the bonnet can be disassembled during maintenance or the like. Can be done easily. In the case where a heat source such as a hydraulic oil tank that stores hydraulic oil for hydraulic equipment is stored in the bonnet one side of the driver's seat, if the lid of the bonnet one side is formed by sheet metal, Heat is easily transferred to the lid from a heat source such as a hydraulic oil tank, and one side of the bonnet is located on the side of the driver's seat, so if the lid has heat, the environment around the operator deteriorates, In such a case, by forming the lid on one side of the bonnet with resin, the environment around the operator is not deteriorated.

The lid side can be opened and closed by pivotally attaching the lid side to the side wall on the driver side of the main body of the bonnet one side so as to be vertically swingable by a hinge.
When the lid is opened, the lid is located on the driver's side, which is convenient for disassembling the connecting portion between the main body of one side of the bonnet and the other side of the bonnet from the outside in the left-right direction. Good. Also, the lid side is pivotally attached to the side wall on the driver side of the main body of one side of the bonnet so that the lid side can swing up and down about an inclined shaft center that moves downward as it goes forward. When the lid is opened, the extension part moves upward from the connecting part of the body part of one side of the bonnet and the other side part of the bonnet, and also moves to the front side. It is possible to prevent the extension portion from becoming an obstacle when disassembling and connecting the connecting portion between the main body portion on one side of the bonnet and the other side portion of the bonnet.

On the outer surface side of one side of the bonnet, a recess is provided from the outside toward the inside, and a recess extending from the main body to the lid is formed. The lid is attached to the main body of the recess. By providing the key insertion part of the lock that locks the
The key insertion part can be prevented from coming into contact with something to be damaged, and the part of the concave part on the lid side can be used as a handle for opening the lid so that fingers can be easily hooked. You can

[Brief description of drawings]

FIG. 1 is a plan view of an upper swing body.

FIG. 2 is a side view of a backhoe.

FIG. 3 is a side view of the upper swing body seen from the right side.

FIG. 4 is a rear view of the upper swing body.

FIG. 5 is a side view of the upper swing body seen from the right side.

FIG. 6 is a side view seen from the right side of one side of the bonnet.

FIG. 7 is a plan view of a lid on one side of the bonnet.

FIG. 8 is a front cross-sectional view of a lid on one side of the bonnet.

FIG. 9 is a plan view of a hood and a swivel base.

FIG. 10 is an enlarged view of part A in FIG. 9;

11 is a sectional view taken along the line BB of FIG.

FIG. 12 is a side sectional view of a mounting portion at a rear portion of one side of the bonnet.

FIG. 13 is a side sectional view of a rear mounting portion of one side of the bonnet.

FIG. 14 is a side view of a recessed portion that constitutes a handle portion of the lid body and a recessed portion into which a key insertion portion of a lock that locks the lid body is inserted.

FIG. 15 is a side cross-sectional view of a recessed portion that forms a handle portion of the lid body and a recess into which a key insertion portion of a lock that locks the lid body is inserted.

[Explanation of symbols]

1 Backhoe (turning work machine) 12 swivel base 22 Bonnet 23 Driver's seat 38 Bonnet One Side 39 Bonnet other side 45 Inspection opening 46 Body 46C inner wall 47 Lid 55 Hinge 58 Extension 61 recess 61A Main body side of the recess 61B Lid-side part of the recess (handle part) X swivel axis Y axis center

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Kenji Hita             64 Ishizukitamachi, Sakai City, Osaka Prefecture Kubo Co., Ltd.             Ta Sakai Factory (72) Inventor Yoshimi Tanaka             64 Ishizukitamachi, Sakai City, Osaka Prefecture Kubo Co., Ltd.             Ta Sakai Factory (72) Inventor Yuji Yamashita             64 Ishizukitamachi, Sakai City, Osaka Prefecture Kubo Co., Ltd.             Ta Sakai Factory F-term (reference) 2D015 BA00 CA03                 3D004 AA15 BA04 CA04 CA16 DA04                       DA07 DA14

Claims (5)

[Claims] 1. A swivel, which is capable of swiveling about a vertical axis, is provided with a driver's seat and a bonnet for covering equipment provided on the swivel, and the bonnet is arranged on one side of the driver's seat. One side of the bonnet and the other side of the bonnet arranged on the other side of the rear side of the one side of the bonnet are provided. It is equipped with a main body fixed to the base and a lid that opens and closes the inspection opening of this main body, and the rear side of the main body on one side of this bonnet is the rear side of the inspection opening. The bonnet is connected to the other side of the bonnet, and the lid extends beyond the inspection opening and extends so as to cover the main body of the one side of the bonnet and the connecting portion of the other side of the bonnet. A bonnet device for a swivel work machine, which is provided with a section. 2. The bonnet device for a swing working machine according to claim 1, wherein the lid is made of resin. 3. The lid body is openable and closable by pivoting the driver's seat side to a driver's seat side side wall of a main body part of one side of the hood by a hinge so that the lid body can swing up and down. The bonnet device for a swivel working machine according to claim 1 or 2. 4. The lid body is pivotally mounted such that its driver seat side is vertically swingable on a driver side seat side wall of the main body of one side of the bonnet about an inclined shaft center that moves downward as it goes forward. The bonnet device for a swivel work machine according to any one of claims 1 to 3, wherein the bonnet device can be opened and closed by being worn. 5. The outer surface of one side of the bonnet is recessed from the outside to the inside, and a recess extending from the main body to the lid is formed, and a lid is provided on the main body side of the recess. The key insertion portion of a lock for locking the body is provided in an immersive manner, and the portion of the concave portion on the lid body side is used as a handle portion for opening the lid body. Bonnet device for swivel work machines.