JPH1191638A - Driving cabin frame structure of industrial vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve appearance and strength by connecting longitudinal frames, lateral frames, and vertical frames which constitute a cabin frame with single joint members formed as the separate parts so as to define corner members of the cabin frame. SOLUTION: A cabin frame 10 is formed of a pair of vertically directed right and left front frames 11, 11, and a pair of vertically directed right and left rear frames 12, 12, longitudinally directed left upper front and rear frames 13, 13, and longitudinally directed upper front and rear frames 15a, 15b, and a laterally directed lower frame 16. When each of the above frames 11 to 16 is connected with joint members J1 to J4 respectively, each corner portion of the frame 10 is defined by each of those joint members J1 to J4. This constitution improves the appearance and strength of the cabin frame.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a driving cabin frame structure for an industrial vehicle such as a tractor or construction machine.

[0002]

2. Description of the Related Art Conventionally, a cabin frame formed by connecting a front and rear frame of a cabin front and rear, a horizontal frame of a cabin sideways, and an upper and lower frame of a cabin vertically at a corner portion of the cabin frame includes a front and rear frame and a horizontal frame. And one end of one of the upper and lower frames, and the other end of one of the two frames is connected to the end of one of the two frames.

[0003]

Heretofore, the end of each frame has been concentrated at a location near the center of the corner portion of the cabin frame, so that not only the appearance has deteriorated, but also the frame strength has been liable to decrease. SUMMARY OF THE INVENTION An object of the present invention is to provide a frame structure that provides a cabin frame having good appearance and excellent strength when the above-mentioned three types of frames are connected at a corner portion of the cabin frame.

[0004]

The constitution, operation and effect of the invention according to claim 1 are as follows.

[Structure] The front and rear frames and the horizontal frame are separated by a single part joint member formed separately from the front and rear frames of the cabin, the horizontal frame of the cabin, and the upper and lower frames of the cabin. A cabin frame is formed by connecting the upper and lower frames, and a corner portion of the cabin frame is formed by the joint member.

[Operation] The ends of the front and rear frames, the horizontal frame, and the upper and lower frames are separately connected to the three ends of the joint member, and are dispersed at locations relatively distant from the center of the corner portion formed by the joint member of the cabin frame. The cabin frame is formed while being connected to each other via a joint member.

[Effect] By dispersing the end portions of the frame, a cabin frame having a simple corner portion and good appearance and hardly causing stress concentration is formed, and has high commercial value and high reliability in terms of strength and durability. Cabin can be configured.

The structure, operation and effect of the invention according to claim 2 are as follows.

In the structure according to the first aspect of the present invention, there is provided a fitting connecting means in which one connecting portion is inserted into the other concave portion between each of the front and rear frames, the horizontal frame, the upper and lower frames, and the joint member. It is prepared.

[Operation] The front and rear frames, the lateral frames, and the upper and lower frames are firmly connected to the joint member by the fitting connection means.

[Effects] Each frame and the joint member are firmly connected to each other, and a cabin frame with high strength can be obtained from the viewpoint of the connection strength.

The structure, operation and effect of the invention according to claim 3 are as follows.

[Structure] In the structure of the invention according to claim 1 or 2, each of the front and rear frames, the horizontal frame,
The joint member is formed so as to be connected so that both cabin outward faces are flush with each other.

[Operation] Each frame and the joint member are connected to each other without any step on the outside surface of the cabin.

[Effect] Each frame and the coupling member have the above-mentioned step between them, and have an appearance state as an integral part,
From this aspect, a cabin frame with an excellent appearance can be obtained.

The structure, operation and effect of the invention according to claim 4 are as follows.

[Structure] In the structure of the present invention according to any one of claims 1 to 3, the front and rear frames, the lateral frames, the upper and lower frames, and the joint member are formed such that the outward facing surfaces of both cabins have the same lateral width. It is formed so as to be connected in such a state.

[Operation] Each frame and the joint member are connected without any step in the width between them.

[Effect] Each frame and the coupling member have the above-mentioned step between them and have an appearance state as an integral part,
From this aspect, a cabin frame with an excellent appearance can be obtained.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT As shown in FIG. Lift arm 3 for connecting the device so that it can be moved up and down freely
And a power take-off shaft 4 for transmitting power to the connected working device
To construct a tractor. This tractor mainly constitutes a riding cultivator by connecting a rotary tilling device.

As shown in FIG. 2, the driving cabin C has a cabin frame 10 having a plurality of mounting members 9a, 9b, 9c at the lower end thereof, and a notch for receiving the rear end of the driving portion of the self-propelled body. A front wall 20 made of a glass plate provided with a lower end 20a, a rear wall 21 made of a glass plate, a ceiling wall 22 made of a synthetic resin plate, and a pair of left and right glass plates provided with a handle 23a for opening and closing at the front end. Side door 23,2
3.

The mounting members 9a, 9b, 9c connect the operating cabin C to the self-propelled body, and a pair of right and left mounting members 9a, 9a, 9b, 9c, which are located closest to the front end of the cabin. , 9a are connected to a support provided on the body frame of the self-propelled body,
A pair of left and right mounting members 9b located at the middle part in the front and rear direction of the cabin are connected to the front end side of the rear wheel fender 5, and a pair of left and right mounting members 9c and 9c located at the rearmost side of the cabin are rear wheels. It is connected to the rear end of the fender 5.

The cabin frame 10 is made as shown in FIG. That is, a pair of left and right cabins vertically front frames 11, 11, a pair of left and right cabins vertically rear frames 12, a pair of right and left cabins front and rear frames 13, a pair of right and left cabins front and rear Front and rear frames 14, 14; a pair of front and rear upper cab horizontal frames 15a and 15b; one cabin traverse lower horizontal frame 16; and an upper front horizontal frame located on the front side of a pair of front and rear upper horizontal frames 15a and 15b. The first joint member J1 configured to connect the end portions of the front frame 11 and the front and rear frames 11 and the front and rear frames 13 and form the upper front corner of the cabin frame 10, and a pair of front and rear upper and lower frames 15a and 15b. The upper rear side frame 15b, the rear frame 12, and the upper front and rear frames 13 located on the rear side are connected to each other. The second joint member J2 are both configured to form a rear upper corner portion of the cabin frame 10, front frame 13 and the lower front and rear frame 1
4 and the cabin frame 1
0, a third joint member J3 configured to form a lower front corner portion, the lower horizontal frame 16, the rear frame 12, and the lower front and rear frame 14 are connected to each other at the ends thereof, and the lower rear corner portion of the cabin frame 10 is formed. The fourth configured to
The joint member J4 is formed by each frame and the joint member.

The left and right front frames 11 are made of an extruded aluminum material and are configured to support the lateral edges along the lateral edges of the front side wall 20. The left and right rear frames 12 are made of an extruded aluminum material and are formed along the lateral edge of the rear wall 20. The left and right upper and lower frames 13 are made of an extruded aluminum material and are configured to support the lateral edges along the lateral edges of the ceiling wall 22. The left and right lower front and rear frames 14 are made of an extruded aluminum material and are formed of a front frame body formed on a straight line along the lateral side edge of the getting-in / off step 6 supported by the body frame of the self-propelled body, and an extruded aluminum material. And a rear frame main body formed in a curved shape along the upper surface side of the rear wheel fender 5, and a fifth joint member J made of aluminum casting for connecting a front end side of the rear frame main body to a rear end side of the front frame main body.
5 along the upper surface of the rear wheel fender 5 and the side edge of the step 6 to make contact with them. The upper front horizontal frame 15a is made of an extruded aluminum material, and is configured to support the front edge along the front edge of the ceiling wall 22.
b is made of an extruded aluminum material and is configured to support the rear side edge along the rear side edge of the ceiling wall 22.

The left and right side doors 23 are supported by the left or right rear frame 12 via a pair of upper and lower hinge members 23b connected to the rear end side of the door. It is configured to swing around the cabin in the lateral direction. The side door 23 is swung toward the cabin frame 10 so that the front edge of the side door 23 is received by the front frame 11 via the sealing material attached thereto, and the lower edge of the side door 23 is The upper and lower frames 13 are received by the lower front and rear frames 14 via the sealing material attached to the upper and lower frames 13 through the sealing material attached thereto.
, And the rear edge of the side door 23 is received by the rear frame 12 via a sealing material attached thereto, so that the side door 23 is in the closed position. .

The rear side wall 21 has a pair of right and left mounting members 21a connected to the upper end thereof, and is configured to rotatably connect the mounting members 21a around an axis Y in a lateral direction of the cabin. The supporting portion 24 provided on the frame 15b supports the upper horizontal frame 15b, and is configured to swing up and down around the axis Y. The rear side wall 21 is swung downward, and both side edges of the rear side wall 21 are received and supported by the rear frame 12 via a sealing material attached thereto. The lower side frame 16 is configured so as to be received and supported via a seal member attached thereto, so that the rear side wall 21 is in the closed position.

That is, the left and right front frames 11 of the cabin frame 10 and the upper front frame 15a
0, the upper front horizontal frame 15a, the upper front horizontal frame 15b, and the left and right upper front and rear frames 13 support the ceiling wall 22, and the upper rear horizontal frame 15b swings the rear wall 21 about the axis Y. The left and right rear frames 12
The driving cabin C is formed by supporting the side door 23 so that it can swing open and close around the axis X. The front frame 1 is located on both sides of the driving cabin C.
1, an upper front and rear frame 13, a rear frame 12, and a lower front and rear frame 14, and a side doorway 1 for a driver getting on and off.
7, and the entrance 17 is opened and closed by swinging the side door 23. Further, on the rear side of the driving cabin C, an upper rear horizontal frame 15b is provided.
And the left and right rear frames 12 and the lower horizontal frame 16,
A working window 18 facing the rear of the cabin, which is used to operate the connected working device and to monitor the working condition, is formed. The working window 18 is opened and closed by swinging the rear wall 21. It is.

The second joint member J2 is formed by casting aluminum into separate parts from the upper front and rear frames 13, the rear frame 12, and the upper rear horizontal frame 15b, and each of the frames 12, 13, 15b is shown in FIG. To the connection structure shown in FIG.

That is, the second joint member J2 is connected to the first connecting portion 31 for the upper front and rear frames 13 and the rear frame 1
2 and a third connecting portion 33 to the upper rear side frame 15b are formed as a single component having their one ends connected to each other.

The first connecting portion 31 is provided with a pin hole 31a extending in the longitudinal direction of the first connecting portion 31, and the other end of the first connecting pin 34 having one end inserted into the pin hole 31a is moved up and down. The first connecting pin 34 is inserted into a pin hole 13a as shown in FIG. 5 which is also used as a hollow hole of the frame 13, and is attached to the inside of the cabin frame of the first connecting portion 31 by one lock bolt 35. Of the first connecting portion 31 and the positioning of the front and rear frames 13.
The front and rear frames 1 of the first connection pin 34 are provided by two lock bolts 36, 36 which are arranged and attached on the inner surface side of the cabin frame in the longitudinal direction of the front and rear frames 13.
The first connecting portion 31 and the front and rear frames 13 are connected by performing retaining and positioning with respect to the third frame 3. In this connection state, the first cabin outward surface 31b of the first connecting portion 31 is smoothly connected to the cabin outward surface 13b of the front and rear frames 13 so as to be smoothly connected to the cabin outward surface 13b regardless of whether the outward surface is continuous. A connecting portion 31 is formed. That is, the lateral width 31c of the cabin outward surface 31b of the first connecting portion 31 is the same as the lateral width 13c of the cabin outward surface 13b of the front and rear frames 13. The shape of the cabin outward surface 13b in the cross-sectional view of the first connecting portion 31 is the same as the shape of the cabin outward surface 13b in the cross-sectional view of the front and rear frames 13, so that both outward surfaces 31b, 13b are formed.
Are lined up flush. That is, a connecting portion 34 protruding from the end face of one of the second joint member J2 and the front and rear frame 13 is formed by the first connecting pin 34, and the other of the second joint member J2 and the front and rear frame 13 is The recessed portions 31a and 13a into which the connecting portions 34 enter.
Are formed by the pin holes 31a and 13a,
4 and the concave portions 31a and 13a, the second joint member J
A fitting connection means for connecting the front and rear frames 13 to each other is configured. That is, the connecting portion 34 is
The first connecting portion 31 of the second joint member J2 and the front and rear frames 13 are connected by being inserted into the first and second frames 1a and 13a.

The second connecting portion 32 is provided with a pin hole 32a extending in the vertical direction of the second connecting portion 32, and the other end of the second connecting pin 37, one end of which is inserted into the pin hole 32a, is connected to the rear frame. The second connecting pin 37 is inserted into a pin hole 12a as shown in FIG. 3 which is also used as a hollow hole of the second connecting pin 32, and is attached to the inner side of the cabin frame of the second connecting portion 32. Two lock bolts 39, 3 configured to prevent the second connecting portion 32 from coming off and to be positioned, and to be attached to the inner side of the rear frame 12 in the longitudinal direction of the rear frame 12.
9 to prevent the second connecting pin 37 from coming off the rear frame 12 and to position the second connecting pin 37.
2 and the rear frame 12 are connected.
In this connection state, the cabin outward surface 32b of the second connection portion 32 is smoothly connected to the cabin outward surface 12b of the rear frame 12 in a lateral width. That is, the width 3 of the cabin outward facing surface 32b of the second connecting portion 32
2c is the same as the lateral width 12c of the cabin outward surface 12b of the rear frame 12. That is, the second joint member J
2 and a connecting portion 37 protruding from an end surface of one of the rear frame 12 and the second connecting pin 37,
On the other of the second joint member J2 and the rear frame 12,
The recessed portions 32a and 12a into which the connecting portion 37 enters are formed by pin holes 32a and 12a, and the fitting for connecting the second joint member J2 and the rear frame 12 by the connecting portion 37 and the recessed portions 32a and 12a. The connecting means is constituted. That is, the connecting portion 37 is connected to the recessed portions 32a, 1a.
The second connecting portion 32 of the second joint member J2 and the rear frame 12 are connected by entering the second joint member J2.

The third connecting portion 33 is provided with a pin hole 33a extending in the longitudinal direction of the third connecting portion 33, and the other end of the third connecting pin 40, one end of which is inserted into the pin hole 33a, is raised. The third connecting pin is inserted into a pin hole 15c as shown in FIG. 3, which is also used as a hollow hole of the horizontal frame 15b, and is attached to the inner side of the cabin frame of the third connecting portion 33 by one lock bolt 41. 40 third connecting portion 33
The upper rear horizontal frame 15b on the inner side of the cabin frame of the upper rear horizontal frame 15b.
The third connecting pin 40 is prevented from falling off and positioned with respect to the upper and rear horizontal frames 15a by two lock bolts 42, 42 which are arranged and attached in the longitudinal direction of the third connecting pin 40. It is configured to be connected to the rear horizontal frame 15a. In this connection state, the cabin outward surface 33b of the third connection portion 33 is smoothly connected to the cabin outward surface 15d of the upper rear lateral frame 15b, regardless of whether the surface is laterally wide or the surface of the outward surface is continuous. A third connecting portion 33 is formed. That is, the lateral width 33c of the cabin outward surface 33b of the third connecting portion 33 is changed to the lateral width 15c of the cabin outward surface 15d of the upper rear lateral frame 15b.
Same as e. The shape of the cabin outward-facing surface 33b in the cross-sectional view of the third connecting portion 33 is changed to the upper rear horizontal frame 15b.
The shape is the same as the shape of the cabin outwardly facing surface 15d in a cross-sectional view, and both outwardly facing surfaces 33b and 15d are arranged flush with each other. That is, the second joint member J2 and the upper rear horizontal frame 1
5b, a connecting part 4 protruding from an end face thereof is provided.
0 is formed by the third connecting pin 40, and the other of the second joint member J2 and the upper rear lateral frame 15b is provided with the recessed portions 33a and 15c into which the connecting portion 40 is inserted, by the pin holes 33.
a, 15c, the connecting portion 40 and the recess 3
3a, 15c constitute a fitting connection means for connecting the second joint member J2 and the upper rear horizontal frame 15b. That is, the connecting portion 40 is connected to the recessed portions 33a, 1a.
5c, the third connecting portion 33 of the second joint member J2 and the upper rear lateral frame 15b are connected.

As a result, the second joint member J2 is connected to the upper front and rear frames 13, the rear frame 12, and the upper rear horizontal frame 15
b are connected to each other by the fitting connection means. Then, the cabin outward facing surface 3 of the second joint member J2
1b and the cabin outward facing surface 13b of the upper front and rear frame 13 are flush with each other, and both cabin outward facing surfaces 31b, 13
b are connected so that the horizontal widths 31c and 13c are the same. The width 32 between the cabin outward surface 32b of the second joint member J2 and the cabin outward surface 12b of the rear frame 12
The connection is made in a state where c and 12c have the same width. The cabin outward surface 33b of the second joint member J2 and the cabin outward surface 15d of the upper rear horizontal frame 15b are flush with each other, and the widths 33c, 33c of the two cabin outward surfaces 33b, 15d.
15e are connected so that they have the same width.

The first joint member J1 and the fourth joint member J4 are configured similarly to the second joint member J2.
Thereby, the first joint member J1 is connected to each of the front frame 11, the upper front lateral frame 15a, and the upper front and rear frame 13 by the fitting connecting means, and the cabin outwardly facing surfaces of the first joint member J1 are flush with each other. And the two cabin outward facing surfaces are connected in the same width. The fourth joint member J4 is connected to each of the lower front and rear frames 14, the rear frame 12, and the lower horizontal frame 16 by fitting connection means, and both cabin outwardly facing surfaces are flush with each other. Are connected in such a manner that the lateral width of the cabin outward facing surface becomes the same lateral width.

[Other Embodiments] The present invention can be applied not only to tractors, but also to driving cabins equipped with various agricultural vehicles such as combine harvesters and various construction machines such as backhoes. Called an industrial vehicle.

[Brief description of the drawings]

Fig. 1 Side view of the entire tractor

FIG. 2 is a perspective view of the driving cabin in an exploded state.

FIG. 3 is a perspective view of a part of each of a front and rear frame, a horizontal frame, and an upper and lower frame, and a second joint member.

FIG. 4 is a cross-sectional view of the fitting connection means.

FIG. 5 is a sectional view of the front and rear frames.

[Explanation of symbols]

10 Cabin frame 11, 12 Upper and lower frame 13, 14 Front and rear frame 15a, 15b, 16 Horizontal frame 12a, 13a, 15c, 31a, 32a, 33a Recess 12b, 13b, 15d, 31b, 32b, 33b Cabin outward facing surfaces 34, 37 , 40 connecting part

Claims (4)

[Claims] The front and rear frames, the horizontal frame, and the vertical frame are separated by a single-piece joint member formed separately from the front and rear frames of the cabin, the horizontal frame of the cabin, and the upper and lower frames of the cabin. A driving cabin frame structure for an industrial vehicle, wherein a cabin frame is formed by connecting the frame to the frame, and a corner portion of the cabin frame is formed by the joint member. 2. The industrial vehicle according to claim 1, further comprising a fitting connecting means in which one connecting portion is inserted into the other concave portion between each of the front and rear frames, the horizontal frame, the upper and lower frames, and the joint member. Driving cabin frame structure. 3. The industrial vehicle according to claim 1, wherein each of the front and rear frames, the horizontal frame, and the joint member are formed so as to be connected in a state where both cabin outwardly facing surfaces are flush with each other. Driving cabin frame structure. 4. The joint according to claim 1, wherein each of the front and rear frames, the horizontal frame, and the upper and lower frames is connected to the joint member such that both cabin outward facing surfaces have the same lateral width. The driving cabin frame structure for an industrial vehicle according to any one of the preceding claims.