JPS61191416A - Manufacturing of cabin for tractor - Google Patents

Abstract

PURPOSE:To allow enlargement of the field of front view with a simple work by individually engaging a front transparent plate and a pair of right and left side transparent plates, holding the respective transparent plates mutually with a holding tool, filling the gap between both plates with fillers, drying the fillers, and removing the holding tool. CONSTITUTION:For production, a central frame 36 corresponding to a bonnet at the central part of a pair of right and left front posts 9 and connecting frames 21 connecting between both right and left sides of this central frame 36 and the lower end of the respective front posts 9 are provided. Then, a front transparent plate 19 is fit between the respective front posts 9 and central frame 36 and a pair of right and left transparent plates 20 are fit between the central frame 36, front posts 9, and connecting frames 21. In addition, the respective transparent plates 19 and 20 are held by a holding tool 37 so that a preset gap can be generated between the end edges of the respective transparent plates 19 and 20. Simultaneously with this, the said gap is filled with the transparent fillers 32 with elasticity and the holding tool 37 is removed following the drying of adhesives 32. As a result, the connecting member between the said respective transparent plates 19 and 20 can be removed by a simple work and the field of front view can be extended.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for manufacturing a tractor cabin.

(Prior Art) A cabin that surrounds the driver's seat, steering wheel, etc. of a tractor is well known from the prior art, as disclosed in Japanese Utility Model Application Publication No. 58-19877. In this type of cabin, in order to ensure forward visibility, a front transparent plate is provided on the front side of the cabin body that extends above the bonnet and extends between a pair of left and right front pillars. Equipped with transparent plates on the sides.

However, with this, a connecting member was provided in the horizontal direction between the pair of left and right front pillars at the upper side of the bonnet, and this connecting member separated the front transparent plate and the side transparent plate below it.
The visual field was obstructed by the connecting member, making it impossible to secure a sufficient visual field.

Therefore, it has been considered to omit the connecting members between the upper and lower front transparent plates and the side transparent plates to further expand the front field of view.

(Problems to be Solved by the Invention) If the connecting member between the upper and lower transparent plates is omitted in order to expand the field of view, various problems arise in manufacturing, such as processing of the joints between the transparent plates. It arises. For example, due to the load on the upper front transparent plate during bonding, the filled adhesive may bulge before drying, creating unevenness in the bonded area, and the transparent plates may be bonded with deviations in the thickness direction. be. Furthermore, depending on the adhesive, the bonded portion may come off due to vibration or the like.

(Means for Solving the Problems) The present invention is intended to solve the problems during manufacturing, and as a specific means for that purpose, there is a A pair of front struts 9
When manufacturing a tractor cabin equipped with a front transparent plate 19 extending between the two sides and a pair of left and right side transparent plates 20 located on both left and right sides of the bonnet 3, the central part of the pair of left and right front posts 9 corresponds to the bonnet 3. A connecting frame 22 is provided that connects the left and right sides of the central frame 36 and the lower ends of the left and right pair of front columns 9.
The front transparent plate 19 is fitted between the center frame 36 and the center frame 36, and the left and right pair of side transparent plates 20 are fitted between the center frame 36, the front support 9 and the connecting frame 21, and then these transparent plates 19 and 20 are fitted. The transparent plate 19.21 is held by a holder 37 so that a predetermined gap 31 is formed between the edges, and after drying, an elastic transparent adhesive 32 is filled in the gap 31. After drying the holder 32, the holder 37 is removed.

(Example) Hereinafter, the present invention will be described in detail with reference to the illustrated example.
In the figures and FIG. 2, ■ is a tractor body, 2 is an engine mounted on the front part thereof, and is covered by a bonnet 3. Rear wheels 4 are supported on both sides of the rear of the tractor body 1 via a rear axle case 5 and the like. Reference numeral 6 denotes an integrated cabin mounted on the rear part of the tractor body 1, which includes a cabin body forming a skeleton body, a floor sheet 7 attached to the bottom side of the cabin body, and a seat seat 7 attached to the left and right sides of the cabin body. It has a ring fender 8.

The cabin body consists of a pair of left and right front struts 9, a pair of left and right rear struts 10, a pair of left and right intermediate struts 11 provided between the front and rear struts 9.10, and attached to the upper ends of these struts 9.10.11. A zenith frame 12 is provided, and a pair of foundation frames 13 in the front-rear direction are provided on the lower side on the left and right. The front end of the foundation frame 13 is supported by a bracket 14 projecting outward from the tractor body 1, and the rear end is supported by a bracket 15 on the rear axle case 5 via vibration isolators 16 and 17, respectively.

A partition plate 18 is provided on the front side of the cabin body so as to connect the lower ends of the pair of left and right front struts 9, and a front glass 19 as a front transparent plate and a side glass 20 as a side transparent plate are fitted. It is rare. That is, the partition plate 18 connects a central frame 36 formed in the center between the left and right pair of front columns 9 to correspond to the bonnet 3, and the left and right sides of this central frame 36 and the lower ends of the left and right pair of front columns 9. The connecting frame 21 is provided with a connecting frame 21, and is formed into an appropriately uneven shape to ensure strength. Note that a reinforcing member 22 is attached to the connecting frame 21. The center frame 36 of the bulkhead plate 18 has a panel portion 23, a handle 24, and a pedal 25 on the inside of the cabin.
etc. are installed. As shown in FIGS. 3 to 5, glass is installed separately or integrally on the inside of the pair of left and right front columns 9, on the lower side of the zenith frame 12, on the upper side of the central frame 36, on both left and right sides, and on the upper side of the connecting frame 21. Mounting ribs 26 to 29 are provided, and vibration isolating rubber 30 with an H-shaped cross section is attached to these ribs 26 to 29.
Each glass 19, 20 is fitted through.

The pair of left and right front struts 9 are formed in a dogleg shape so that the center portions in the vertical direction protrude outward. The front glass 19 has a trapezoidal shape with straight upper and lower edges, and is fitted into a portion surrounded by a central frame 20, a pair of left and right front columns 9, and a zenith frame 12. The side glass 20 has an inverted trapezoidal shape that is narrower on the lower side, and is fitted into a portion surrounded by the central frame 36, the front column 9, the connecting frame 21, and the front glass 19. Between the lower end of the front glass 19 and the upper end of the side glass 20, there is a sixth
As shown in the figure, a gap 31 is provided between the glasses 19 and 20 and the plate thickness T is approximately the same, and the gap 31 is filled with an elastic transparent adhesive 32 after drying. Glasses 19 and 20 are bonded together.

Although the front glass 19 is curved so as to protrude forward as shown in FIG. 7, it may be in the shape of a flat plate.

32a is a driver's seat, which is provided on the floor seat 7. 33 is a door, 34 is a side window, and 35 is a roof cover.

After the integrated cabin 6 with the above structure is assembled, it is lifted up with a crane or the like and mounted on the tractor body 1, and the vibration isolating material 16.
The front glass 19 and the side glass 20 are assembled in the following manner during manufacturing.

After the lower ends of the pair of left and right front struts 9 of the cabin body are connected by the central frame 36 and the connecting frame 21 to form a skeleton, the front struts 9, the zenith frame 12, the central frame 36, and the connecting frame 21 are provided with A continuous anti-vibration rubber 3 with an H-shaped cross section is attached to the ribs 26 to 29.
Insert 0. Next, after positioning the front glass 19 as shown in the imaginary line in FIG. It is fitted into the groove of the vibration isolating rubber 30, and the lower end edge is put into the groove of the vibration isolating rubber 30 of the central frame 36, so that the load of the front glass 19 is supported on the central frame 36 side. Next, as shown in Fig. 8, align the pair of left and right side glasses 20 with the central frame 36, front strut 9, and vibration isolating rubber 30 on the connecting frame 21 side, and press down from above (indicated by arrow B). Side glass 20
Fit the left and right side edges and the lower end edge into the groove of the vibration isolating rubber 30.

In this case, the side glass 20 has an inverted trapezoidal shape and is pushed into the vibration isolating rubber 30, so that it receives a reaction force in an upward pushing direction. Therefore, it is appropriate that the inclination angles α and β of both side edges of the side glass 20 are approximately 5 to 6 degrees as shown in FIG. Can be bonded without stress, improving durability.

After the side glass 20 is fitted in this way, as shown in FIGS. 8 and 10, the gap 31 between the upper and lower front glass 19 and the side glass 20 is closed using the holder 37. The thickness is determined to be approximately the same as the plate thickness T of 19.20.

The holder 37 is equipped with a pair of suction cups 39 with a diaphragm 38 and a turnbuckle 41 in the middle of a connecting rod 40 that connects the pair of suction cups 39. By operating the suction cup 39, the suction cup 39 can be attached to and released from glass or the like. Therefore, each suction cup 39 is suctioned to the front glass 19 and the side glass 20, and the turnbuckle 41 of the connecting rod 40 is
The gap 31 is adjusted by adjusting the expansion and contraction of. Then, the gap 31 is filled with a transparent adhesive 32, and the upper and lower front glass 19 and side glass 20 are bonded and integrated with this. The adhesive 32 used in this case may have elasticity and transparency after drying. The adhesive 32 is a -component type, acetic acid type silicone adhesive, for example, manufactured by Three Bond Co., Ltd. under the trade name PANDO524A.
An adhesive having transparency, adhesive strength, weather resistance, heat resistance, cold resistance, and elongation of about 500% is suitable.

When filling the gap 32 with the adhesive 32, if the gap 31 is set to about the thickness of the glass plate, filling the gap 32 with the adhesive 32 will be easier than if it is narrow, and will not require a patch plate or the like if it is too wide. , workability is very good. Also, adhesive 32
When filled, a portion of the left and right ends enters into the groove of the vibration isolating rubber 30 as shown in FIG. 11, for example, so that it becomes difficult to come off after drying. When the adhesive 32 dries, the front glass 19 and the pair of left and right side glasses 20 are bonded to each other and become a single piece, so airtightness is obtained like a single sheet of glass, and the bonded portion is transparent. Since the thickness of the glass on the top is about T, when viewed from the driver's seat 32a,
Distortion at the bonded area is hardly a problem, and a sufficient field of view can be secured.

After the adhesive has dried, the holder 37 can be removed. Note that after the front glass 19 and side glass 20 are fitted into the anti-vibration rubber 30, the cross-section 44 is fitted into the anti-vibration rubber 30 from inside the cabin to prevent it from coming off. Fitting may be performed after fitting the glasses 19 and 20, after adjusting the gap 31 with the holder 37, or after adhering.

The lower edge of the front glass 19 may be approximately straight from above the cutout, but it does not necessarily need to be in a straight line as in the embodiment.

Either of the front glass 19 and the side glass 20 may be fitted first.

The side glass 20, which has a smaller area than the front glass 19, may have a slightly thinner plate thickness than the front glass 19. Moreover, a transparent synthetic resin plate can be used instead of glass.

(Effects of the Invention) According to the present invention, after the front transparent plate and the pair of left and right side transparent plates are fitted, the transparent plate is inserted so that a predetermined gap is formed between the edges of the front transparent plate and the side transparent plates. The plates are held together with a holder, the gap between them is filled with adhesive, and the holder is removed after the adhesive dries, so the transparent plates can be bonded securely and the adhesive will not bulge. There are few irregularities caused by the process, and uniform adhesion is possible.Also, since a transparent adhesive is used that has elasticity after drying, the field of view is not restricted by the bonded area, and the bonded area can be easily bonded by vibration after drying. It never comes off.

[Brief explanation of drawings]

The drawings illustrate one embodiment of the present invention, and show the first embodiment of the present invention.
The figure is a front view of the cabin, Figure 2 is a side view of the same, Figure 3 is an enlarged view taken along the mm-m arrow in Figure 1, and Figure 4 is an IV-IV view of Figure 1.
An enlarged view in the direction of arrows, Figure 5 is an enlarged view in the direction of V-V arrows in Figure 1,
The figures are an enlarged view taken along the line VI-VI in FIG. 1, FIG.
The figure is an explanatory diagram of the glass, FIG. 10 is a cross-sectional view of the state in which it is held by a holder, and FIG. 11 is an explanatory diagram of the state of rotation of the adhesive. 1...Tractor body, 6...Integrated cabin, 9.
...Front support, 12...Zenith frame, 19...Front glass (
Front transparent plate), 20... Side glass (side transparent plate), 21.
...Connection frame, 26-29...Rib, 30...Vibration-proof rubber, 31...Gap, 32...Adhesive, 36...Central frame, 37...Holder. Patent applicant: Kubota Iron Works Co., Ltd. No. 6rX T1〉 jII Figure 7'9

Claims (1)

[Claims] 1. The front side of the cabin body is provided with a front transparent plate 19 extending above the bonnet 3 and extending between a pair of left and right front columns 9, and a pair of left and right side transparent plates 20 located on both left and right sides of the bonnet 3. When manufacturing tractor cabins,
A central frame 36 corresponding to the bonnet 3 is provided at the center of the pair of left and right front struts 9, and a connecting frame 22 connecting the left and right sides of this central frame 36 and the lower ends of the pair of left and right front struts 9 is provided. The front transparent plate 19 is fitted between the left and right pair of front columns 9 and the center frame 36, and the left and right pair of side transparent plates 20 are fitted between the center frame 36, the front column 9 and the connecting frame 21, respectively. The transparent plates 19 and 21 are held by a holder 37 so that a predetermined gap 31 is created between the edges of the transparent plates 19 and 20, and after drying, an elastic transparent adhesive 32 is applied to the gap 31. A method of manufacturing a tractor cabin, characterized in that the holder 37 is removed after filling the adhesive 32 and drying the adhesive 32.