JP3377342B2 - Tractor bonnet - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bonnet mounting structure for a tractor. 2. Description of the Related Art Conventionally, a hood for covering an engine mounted on a steering aircraft is connected to a rear hood so as to be openable and closable. In this case, it was necessary to produce several types of hoods, one with a short size and the other with a long size, and prepare them to cover the engine. In order to manufacture tractors of different sizes as described above, several different press dies must be prepared according to the length of the engine portion of the tractor. There are drawbacks such as an increase in cost. [0004] In order to solve the above-mentioned conventional disadvantages, the hood of the tractor according to the present invention comprises a traveling body 2.
A hood 6 for covering the engine 3 mounted above the tractor provided continuously to the rear hood 8 forming a steering panel surface 8a of the steering unit 5 disposed behind the engine 3, the said bonnet 6 rear An auxiliary bonnet 9 capable of closing a gap S formed between the bonnet 8 and the bonnet 8
And the front end of the top plate 9a of the auxiliary bonnet 9 and the bonnet.
When edge bending is performed on the rear end of the top plate 6a of the
Both are configured so that the both edge bending portions are overlapped and connected . Further, the inner surfaces of both side walls 6b, 6b of the bonnet 6 formed in a U-shape and the inner surfaces of both side walls 9b, 9b of the auxiliary bonnet 9 formed in the same shape are fixed to each other by a connecting plate 6e. It is characterized by. FIG. 1 shows a tractor 1 in which an engine 3 is mounted on a traveling body 2 having a front wheel 2a and a rear wheel 2b by covering it with a bonnet device 4 from the front. A steering unit 5 including a steering wheel 5a and a driver's seat 5b is installed in the unit, and a working machine mounting unit 2 that allows a working machine (not shown) such as a tilling device to be mounted on the rear part of the body 2.
0 is provided. The bonnet device 4 includes a bonnet 6 for directly covering the upper part of the engine 3,
A pair of left and right side covers 7 formed so as to cover both sides of the engine 3 along the outer surface shape below the front side, a front grille 7a covering the front surface of the engine 3, and a hood 6 and a rear portion of the side cover 7 A rear hood 8 and the like are arranged so as to be continuous and form a control panel surface 8a in front of the control section 5. The hood 6 has a short body length and is formed so as to cover a small-sized engine 3 mounted on a small-sized tractor as a standard. On the other hand, the illustrated tractor 1 is of a large size having a long body length, and the engine 3 mounted on the tractor 1 is also an engine longer than a normal one. The generated gap S is connected and covered by the auxiliary bonnet 9. That is, the auxiliary bonnet 9 is integrally connected to the rear end of the bonnet 6 having the same cross-sectional shape. For example, when the upper part of the engine 3 is opened, maintenance work or the like is performed. When doing, both the bonnet 6 and the auxiliary bonnet 9 have a rigid structure integrally,
These can be opened and closed integrally. Referring to FIGS. 2, 4 and 6, the connection structure between them will be described. The bonnet 6 has side walls 6b, 6b formed on both sides of a forwardly descending top plate 6a, and a thin iron plate is integrally bent by press molding. Bonnet 6
At the rear end of the U-shaped inner surface, a reinforcing member 6c having a U-shaped cross section formed in an arch shape and spanning the side walls 6b, 6b is reinforced by spot welding. The rear end of the bonnet 6 is subjected to edge bending. On the other hand, as shown in FIG.
Is a top plate 9a having the same shape as the rear end of the bonnet 6,
Press forming is performed with a thin iron plate so as to form both side walls 9b, 9b, and the front and rear ends are subjected to edge bending. An arch-shaped reinforcing member 9c formed substantially along the U-shaped inner surface of the bonnet 9 is spot-welded and reinforced in the middle part of the front and rear. The bent portion of the top edge of the top plate 6a of the bonnet 6 and the bent portion of the front edge of the top plate 9a of the reinforcing bonnet 9 are overlapped, and the bonnet 6 and the auxiliary bonnet 9 are connected by spot welding or the like. I have to.
Also, one side of the connecting plate 6e formed in an inverted U shape on the inner surfaces of the rear ends of the side walls 6b, 6b of the hood 6 and the inner surfaces of the side walls 9b, 9b of the auxiliary bonnet 9 is welded to the side walls 6b, 6b on one side. The other side extends over the side wall 9b of the auxiliary bonnet 9 and is welded to the side wall 9b. With this structure, the bonnet 6 and the auxiliary bonnet 9 have their connection ends reinforced by the reinforcing member 6c and the reinforcing member 9c, respectively.
a and the top plate 9a of the auxiliary bonnet 9 are firmly welded,
Further, the free ends of the side walls 6b, 6b and the side walls 9b, 9b are firmly connected by the connecting plate 6e. Therefore,
Problems such as vibration of the connection end of the bonnet 6 and the auxiliary bonnet 9 due to the vibration of the body 2 and the accompanying damage can be prevented. In addition, the opening and closing of the hood 6 during a maintenance operation or the like can be opened in a large range, and the operation can be performed smoothly. Therefore, the bonnet device 4 constructed as described above simply connects the auxiliary bonnet 9 which is easy to manufacture, using the bonnet 6 which is formed in advance by one press die and is adapted to a standard small-sized tractor. Due to the processing, even in the case of the tractor 1 of a large size, the rear bonnet 8
Is formed so as to be easily closed to effectively cover the engine 3, and the bonnet 6 can be used also for tractors of various sizes. Therefore,
The same bonnet material and the same press die can be used to reduce the cost and facilitate mass production. The truck according to the present invention constructed as described above
Other hood, this hood 6 by using a short hood 6 of the combined length in the tractor of the small size, Bo
Top plate 9a and both side walls 9 having the same shape as the rear end of the net 6
Covers tractor engines of various sizes by connecting an easily manufactured auxiliary bonnet 9 having b and 9ba.
Since it is possible to use the press mold, the tractor can be manufactured at a low cost. Further , the hood of the tractor of the present invention is
The bonnet 6 and the auxiliary bonnet 9 have a strong rigid structure.
Te can be integrally connected Runode, Ru can be prevented noise or damage between them due to vibration or the like. More men
The upper side of the engine in the Maintenance Manual work or the like, bonnet
6 and the auxiliary bonnet 9 as a single
Can be released and opened and closed in this large range
The operation can be performed smoothly .

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of a tractor. FIG. 2 is a side view of the hood. FIG. 3 is a plan view of FIG. 2; FIG. 4 is a sectional view taken along line AA of FIG. 2; FIG. 5 is a sectional view taken along line CC of FIG. 2; FIG. 6 is a sectional view taken along line BB of FIG. 2; [Description of Signs] 2 Traveling body 3 Engine 5 Operating section 6 Bonnet 6b Side wall 6e Connecting plate 7 Side cover 8 Rear bonnet 8a Control panel 9 Auxiliary bonnet S Void 9b Side wall

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B62D 25/10

Claims (1)

(57) [Claim 1] A bonnet 6 for covering an engine 3 mounted on the traveling body 2 and a control panel surface 8a of a control section 5 disposed behind the engine 3 are formed. In a tractor having a rear hood 8 connected in series, an auxiliary hood 9 capable of closing a gap S formed between the hood 6 and the rear hood 8 is provided.
Of the top plate 9a of the auxiliary bonnet 9 and the bonnet 6
Edge bending is applied to the rear end of the top plate 6a, and
The two bent edges are overlapped and connected, and then the bonnet
6 and the inner surfaces of both side walls 6b, 6b formed in a U-shape
Inside the side walls 9b, 9b of the auxiliary bonnet 9 formed in the shape of a circle
The surfaces are fixed to each other with the connecting plate 6e to assist the bonnet 6
A tractor hood configured to integrally connect the hood 9 to cover the engine 3 .