JPH11291959A - Tractor drive cabin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tractor drive cabin of lightweight and sturdy construction, whereby vibrations of the machine boy are unlikely to be transmitted. SOLUTION: A drive cabin C of a tractor is composed of a floor member 20, front side walls 30 made of resin, a lops frame 10, and ceiling wall 40 ranging from the top of the frame 10 to the top of each front side wall 30. The floor member 20, front side walls 30, and the frame 10 are supported by the machine body through buffer material 27/15. The ceiling wall 40 is composed of a lopsle frame 41 of metal coupling the top of the front side wall 30 with the top of the frame 10 and a ceiling wall body 42 of resin coupled with the ceiling frame 41.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a cab of a tractor.

[0002]

2. Description of the Related Art Conventionally, as an operating cabin of a contactor, there has been a conventional one in which substantially the entirety of a portion other than a glass window, such as a front side wall and a ceiling wall, is formed of an iron plate and is supported by a traveling body via a buffer member. Further, for example, Japanese Patent Application Laid-Open No. 3-28
No. 7,475, the disclosure of which is incorporated herein by reference. In other words, a safety frame as a ropes frame including a lower safety frame fixed to the rear axle housing of the traveling body and an upper safety frame supported on the lower safety frame via an elastic interposer is provided. The safety frame is inserted through the loose fitting hole without touching the hole, and the FRP seat lower cover is supported by the lower safety frame, the clutch housing of the traveling vehicle body via the vibration isolating rubber, and the seat lower cover. There was a vehicle equipped with an operating cabin comprising an FRP cabin separated from the safety frame by being placed on top of the safety frame.

[0003]

In the case of the above-described conventional iron-plated cabin, the cabin itself becomes heavy, and the tractor becomes heavier due to the cabin even if the traveling body is reduced in weight. Further, in the case of a conventional FRP cabin, it tends to be disadvantageous in terms of strength. SUMMARY OF THE INVENTION An object of the present invention is to provide a driving cab of a tractor that is lightweight and strong, and hardly transmits the body vibration.

[0004]

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

[Structure] A floor member supported on the traveling body via a cushioning member, a rope frame supported on a rear portion of the traveling body via a cushioning member, and supported on the traveling body via a cushioning member A front wall made of resin having a driving front window, a ceiling wall extending between upper ends of the front wall and the upper end of the rope frame, and the ceiling wall is provided with an upper end of the front wall and the rope frame. A cab of a tractor, comprising a metal ceiling frame connected to an upper end of the tractor and a resin plate ceiling wall body connected to the ceiling frame.

[Operation] Since the front side wall and the ceiling wall main body are made of resin, the ceiling frame is made of metal and connected to the drop frame, the front side wall and the ceiling wall main body, respectively. By firmly supporting the main body, the driving cabin is configured in a state where it can be lighter in weight than a conventional iron-plated cabin and can exhibit strength superior to that of a conventional resin-made cabin. In addition, vibrations caused by running of the traveling body or driving of the engine are attenuated by the cushioning material, and are hardly transmitted to any of the floor member, the front side wall, and the rope frame, and vibrations from the traveling body are floor members, the front side wall, the rope frame. It is difficult for any of these to be transmitted to the driving cabin.

[Effect] The driving cab is made light and strong, and vibration is hardly transmitted from the traveling machine, and the air conditioner can be used to operate comfortably. It is easy to handle, easy to handle, and easy to work, with little vibration and easy boarding.

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, a rear post supporting the ceiling frame by standing on the floor member at the front of the body of each of the pair of left and right body vertical frames of the rope frame is provided. It is prepared.

[Operation] The support structure of the ceiling frame has a structure of a plurality of columns composed of a rope frame and a rear column,
The weight of the ceiling frame must be firmly supported.

[Effect] The ceiling frame is firmly supported by the lightweight support structure, and the driving cabin is also lightweight and firmly obtained from this aspect.

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

In the structure according to the second aspect of the present invention, the vertical frame portion of the vehicle body of the ropes frame and an intermediate portion of the rear support column in the vertical direction of the vehicle are connected by a connecting rod extending in the longitudinal direction of the vehicle. It is.

[Operation] A plurality of pillars composed of the ropes frame and the rear pillars are firmly connected to each other by connecting rods between the middle portions of the two pillars, so that the ceiling frame is more firmly supported.

[Effect] The ceiling frame is more firmly supported, and the operating cabin can be more firmly obtained.

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

[Configuration] In the configuration according to the third aspect of the present invention, the ceiling frame and the ropes frame, the connecting rod and the body vertically-oriented frame portion, the rear column and the floor member, Are connected by connecting bolts.

[Operation] The ceiling frame, the rear support, and the connecting rod are assembled into a unit state in which the ceiling frame, the rear support column, and the connecting rod are connected to each other in a predetermined connecting state outside the traveling machine body, and then collectively connected to the ropes frame and the floor member for traveling. Adopt the assembly method of assembling to the fuselage, or combine the ceiling frame, the rear support, and the connecting rod in the unit state where they are connected in a predetermined connection state, separate them from the ropes frame and the floor member and separate them from the traveling body This makes it possible to adopt a removal method of removing.

[Effects] When assembling a tractor with a cabin, before assembling the ceiling frame, the rear support, and the connecting rod to the traveling body, it is easy and easy to combine them into a unit in a place where it is easy to work outside the traveling body. Efficient assembly work. In addition, when changing the tractor with a cabin to a ropes frame specification with the front side wall and ceiling wall removed, the ceiling frame, rear support and connecting rod are united together and quickly removed from the traveling aircraft and the specifications are changed efficiently Can work.

The structure, operation and effect of the invention according to claim 5 are as follows.

(Structure) In the structure according to any one of claims 1 to 4, a swingable openable and closable side door for opening and closing the entrance is provided, and a door is provided on an outer surface side of a rear wheel fender portion of the floor member. A stopper rail is provided and the lower edge of the side door is received by the door stopper rail to close the side door.

[Operation] When the lower edge of the side door is received by the rear wheel fender itself when the side door is closed, the accuracy of the reception of the rear wheel fender itself is limited by the relationship between the shape and the manufacturing. It is more likely that the door will close in a poorly airtight condition. In contrast,
The rear wheel fender is provided with a door stopper rail in particular to exhibit excellent receiving accuracy, and the side door is received and closed with its lower edge in an airtight state.

[Effect] An advantageous operating section environment is obtained such that the side door closes in an airtight state and air conditioning can be effectively performed.

The structure, operation and effect of the invention according to claim 6 are as follows.

[Configuration] In the configuration of the fifth aspect, the lower end side of the rear post is connected to the door stopper rail.

[Operation] The rear column and the door stopper rail are connected to each other, so that it is possible to receive and act on the side door in a state where a break or a step is hardly formed between the two members. That is, when the side door is closed, the side door can be received by the members of the door stopper rail portion and the rear support column in an airtight state.

[Effect] It is possible to obtain a more advantageous operating environment such that the side doors are closed in the airtight state in the rear wheel fender section and the rear support column so that air conditioning can be performed more effectively.

The structure, operation and effect of the invention according to claim 7 are as follows.

(Structure) In the structure according to any one of claims 2 to 6, the vertical frame portion of the rope frame and an outer cover for covering a lateral outer surface of the rear support, An inner cover that covers an inner surface side of the frame portion and the rear column is provided, and a device housing space is provided between the outer cover and the inner cover.

[Operation] A space around the rope frame and the rear support, such as between the rope frame and the rear support, is used as a device accommodation space, and a cleaning liquid tank, a radio, a tool box, and the like are provided in the space by an outer cover and an inner cover. This makes it possible to cover and house in an excellent condition in terms of appearance and safety.

[Effect] Devices such as a cleaning liquid tank can be housed in a safe state with good appearance by utilizing the dead space around the rope frame and the rear support.

The structure, operation and effect of the invention according to claim 8 are as follows.

(Structure) In the structure according to any one of claims 1 to 7, further comprising a swingable openable / closable rear window for opening / closing between the pair of body frame vertically-oriented frames of the lopframe. The aircraft sideways frame portion is provided with an exposed frame portion exposed from the ceiling wall main body, and the rear window is received by the pair of aircraft vertically oriented frame portions and the exposed frame portion of the lops frame and closed. It is configured to be.

[Operation] By opening / closing the rear window, the space between the vertically-oriented frame portions of the aircraft can be opened, and the cabin can be opened or closed so that the ventilation inside the cabin can be improved or the device portion at the rear of the aircraft can be operated. It is possible to close the space between the vertical frame parts so as to enhance the air-conditioning effect and the soundproofing effect of the inside. And, when the rear window is closed, it is received by the horizontal frame part and the vertical frame part of the ropes frame, which is easy to exhibit excellent receiving accuracy compared to the resin ceiling wall body etc. It is possible to close to a state.

[Effect] It is possible to open the space between the vertical frame portions of the fuselage so as to ventilate the cabin, to easily operate the device portion at the rear portion of the fuselage, and to perform the work while maintaining the vertical frame portions of the fuselage. It is also possible to work while closing the space to enhance the air conditioning and soundproofing effects in the cabin. When closing between the vertical frame portions of the fuselage, the rear window is closed in an airtight state, and a favorable operating section environment such as an extremely improved air-conditioning effect and soundproofing effect is obtained.

[0036]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a pair of left and right steering operation and self-propelled front wheels 1, 1 and free rear wheels 2, 2 are used to drive an engine 3 and an engine bonnet 4. A driving unit having a driving unit having a steering handle 5, a driving seat 6, a driving cabin C, and the like is provided at a rear portion of a traveling body, and a lower portion of a transmission case 7a forming the rear portion of the body is swingable up and down. Lower link 8a connected to the transmission case 7
a lift arm 8b which is connected to the upper part a so as to be able to swing up and down by a lift cylinder (not shown) located in the transmission case, a lift rod 8c which connects the lift arm 8b and the lower link 8a, etc. And a power take-out shaft 9.
A working device such as a rotary tilling device is connected to a rear portion of the machine body by a link mechanism 8 so as to be lifted and lowered, and the rotational output of the engine 3 is transmitted from the power take-out shaft 9 to the connected working device to constitute various working machines. The tractor is configured as follows.

As shown in FIGS. 1, 2 and 4, the driving cabin C has a pair of right and left rear wheel fender portions 21 and 2.
1, a front wall 30 having a driving front window 34 and the like, a ceiling wall 40, a pair of left and right side doors 50, 50, a single rear window 60, and a ropes for protecting the driver. Frame 10, a pair of left and right rear supports 7
1, 71. The details are configured as follows.

As shown in FIG. 6, the rope frame 10 includes an airframe vertical frame portion 11 (hereinafter simply referred to as an upper frame) made of an iron pipe material that stands on both sides of the transmission case 7a along the airframe vertical direction. A frame sideways frame portion 12 (hereinafter, simply referred to as a sideways frame portion 12) made of a body sideways iron pipe material for connecting upper end portions of both the vertical frame portions 11, 11). And a connecting frame portion 10a made of an iron material oriented laterally of the machine body for connecting the intermediate portions of the two vertical frame portions 11, 11. The pair of left and right vertically-oriented frame portions 11 includes a base frame connected to the transmission case 7a and a front frame connected to the upper end of the base frame by bolts. As shown in FIGS. 6, 9 and 10, iron plates are welded to the lower ends of the pair of left and right frame parts 11, 11 to provide mounting members 13.
To the rear axle case portion 7 for the transmission case 7a.
b into the lops support bracket 14 bolted to
The mounting member 1 is placed so as to be received and supported via a cushion rubber 15 as an example of a cushioning member.
3. The mounting body 1 is connected by connecting bolts 16 penetrating the cushion rubber 15 and the rope support bracket 14, respectively.
The rope frame 10 is attached to the traveling body by being configured to prevent the rope frame 3 from coming off the rope support bracket 14. Thereby, the lops frame 10
Is connected to the traveling machine body via a pair of left and right cushion rubbers 15 and 15 and is supported by the traveling machine body in a state where traveling vibrations and engine vibrations transmitted from the traveling machine body are attenuated and alleviated by the cushion rubber 15.

As shown in FIGS. 5, 8 and 9, the floor member 20 has a portal-shaped front wall support 22 and an auxiliary support 23 supporting the front wall support 22 at the front end. An upright floor frame 24 and step portions 25a for driving and getting on and off are provided on both lateral sides near the rear side of the front wall support column 22.
And a floor plate 25 that is formed between the left and right rear wheel fender portions 21 and 21 and that is supported by the floor frame 24 and that is provided on the floor plate 25 behind the step portion 25a. The pair of left and right rear wheel fender portions 21 and 21 are connected to each other.
A first rear mounting portion 24a comprising a plate body having mounting bolt holes on both lateral sides on the rear end side of the floor frame 24, and a front mounting portion 24a having mounting bolt holes on both lateral sides on the front end side of the floor frame 24. And a third rear mounting portion 25b provided at the rear end of the floor plate 25. The mounting portions 24a, 24b, 24c, 25b
The floor member 20 is configured to be mounted on the traveling body based on the mounting structure shown in FIGS. 6, 10 and 11.

That is, as shown in FIG. 11, below each of the step portions 25a, 25a, the front mounting portion 24a is connected to a front transmission case which forms a body portion of the traveling body which is located forward of the transmission case 7a. Floor support bracket 26 connected to the side of 7c
Is mounted so as to be received and supported via a cushion rubber 27 as an example of a cushioning material.
a, the mounting rubber 2 and the floor support bracket 26 are connected to each other by the connecting bolts 28.
4a is prevented from coming off from the floor support bracket 26. As shown in FIGS. 6 and 10, the first fender portions 21 and 21 are located below the respective rear fender portions 21 and 21.
The rear mounting portion 24b is connected to the front end of the mounting body 13 of the ropes frame 10 by bolts. The second, which is also used as a support member for the rear wheel fender portion 21,
The rear mounting portion 24c is attached to the floor support bracket 1 attached to the vertical frame portion 11 of the ropes frame 10.
The bolt is connected to the extension end of the floor support arm 18 extending from the arm 7. The third rear mounting portion 25b
Is bolted to a laterally supported floor plate support rod 19 supported across the floor support brackets 17 on the left and right sides.

Thus, the floor member 20 is connected to the traveling machine body via a pair of left and right cushion rubbers 27 acting on the front end side and a pair of left and right cushion rubbers 15 for the ropes frame acting on the rear end side. The traveling vibration and the engine vibration transmitted from the traveling body are damped by the cushion rubbers 15 and 27 and are supported by the traveling body in a state of being reduced. The driver's seat 6 is supported between the rear wheel fenders of the floor plate 25, so that traveling vibration and engine vibration from the traveling machine body are hardly transmitted to the driver.

As shown in FIG. 2, the front side wall 30 has a notch 32 into which the rear end portion of the engine hood 4 and the front side wall support 22 of the floor member 20 enter, and both sides of the notch 32. Driving window 3 made of glass plate located on the side
3. It is made of a synthetic resin plate so as to have each of the lower window 33 for operation and the front window 34 for operation made of a glass plate located above the notch 32. That is, the outside synthetic resin plate forming the cabin outside portion of the front side wall 30 and the inside synthetic resin plate forming the cabin inside portion of the front side wall 30 are formed by opening the notch 32, Lower window holes for mounting lower windows 33, 33,
It is formed so as to have a front window hole for mounting the front window 34, and a hollow portion 35 is formed between the two synthetic resin plates inside the mold so as to surround the lower window 33 for operation and the front window 34 all around. Then, pressure molding is performed so that the cutouts and the periphery of each window hole are bonded. Then, a front window glass is attached to the front window hole, and a lower window glass is attached to the lower window hole with rubber.

As a result, as shown in FIGS. 2 and 19, the front side wall 30 includes a driving front window 34 located above the front side wall 30 and a driving side window located below both sides of the front side wall 30. The lower window 33, a horizontal frame portion 36 that is located across the entire width of the front side wall 30 along the fuselage lateral direction between the lower window 33 for driving and the front window 34 for driving at an intermediate portion in the vertical direction of the front side wall 30. At both lateral ends of the side wall 30, a vertical frame portion 37 located substantially over the entire vertical length of the front wall 30 along the vertical direction of the body, a first hollow portion 35 a located inside the horizontal frame portion 36, Vertical frame 37,
37, each of which is formed of a resin-made hollow front wall provided with each of the second hollow portions 35b located inside thereof.

A central mounting portion 38a having a plurality of mounting bolt holes at a central portion in the lateral width direction of the lateral frame portion 36 of the front side wall 30 is provided below the lower operating window 33 on both lateral sides of the front side wall 30. Lateral mounting portions 38b each having a mounting bolt hole in the side portion are provided, and these mounting portions 38a,
The front wall 30 is configured to be mounted on the traveling vehicle body based on the mounting structure 38b and the mounting structure shown in FIG.

That is, as shown in FIG. 5, a pair of left and right side wall support brackets 22a, 22a for connecting the center mounting portion 38a to the upper end of the front wall support 22 of the floor member 20, and The side wall supporting brackets 22a, 22a are tightened and connected to the side wall supporting brackets 22a, 22a by mounting bolts configured to pass through the central mounting portion 38a, and the both side mounting portions 38b, 38b are connected to the floor member 20.
The side wall support bracket 25c as shown in FIG. 5 connected to the front end of the step portion 25a and a mounting bolt configured to pass through the lateral mounting portion 38b are tightened and connected to the side wall support bracket 25c.

As a result, the front side wall 30 is connected to the front end side of the floor member 20 so that the floor member 30 and the floor member 3 are connected to each other.
It is connected to the traveling machine body via the cushion rubbers 27 and 15 acting on the vehicle body 0, and is supported by the traveling machine body in a state in which traveling vibration and engine vibration transmitted from the traveling machine body are attenuated and reduced by the cushion rubbers 27 and 15.

As shown in FIG. 1, the ceiling wall 40 is composed of a ceiling frame 41 and a ceiling wall main body 42 made of a synthetic resin plate, and is constructed as follows.

As shown in FIG. 5, the ceiling frame 41
A front-rear frame 43 made of a pair of left and right fuselage front-rear iron pipes; a horizontal frame 44 made of a body-bending sheet metal connecting the front ends of the two front-rear frames 43, 43; Frame 43, 4
3 and a connecting frame 45 made of a sheet metal oriented laterally to the body.

As shown in FIGS. 2 and 17, the ceiling wall main body 42 is made of a synthetic resin plate formed to have an outer peripheral shape slightly larger than the outer peripheral shape of the ceiling frame 41. The sealing material 42a attached to the upper side of the horizontal frame portion 12 of the rope frame 10 and the respective frames 43,
In the assembled state in which the lower frame 44 and the ceiling frame 41 are sealed against the upper surface side of the 44, the horizontal frame 12 of the lower frame 10 and the frames 43, 44 of the ceiling frame 41 are assembled. It is configured to be connected to the drop frame 10 and the ceiling frame 41 by mounting screws 48 configured to penetrate the main body connection brackets 47 attached to a plurality of locations on the inner peripheral side and screw to the ceiling wall main body 42. I have. As shown in FIGS. 5 and 8 and the like, the rear ends of the front and rear frames 43, 43 of the ceiling frame 41 are connected to the lateral ends of the upper end of the ropes frame 10 by connecting bolts 46. As shown in FIG. 13, the horizontal frame 44 of the ceiling frame 41 is connected to the upper end of the front wall 30 by connecting bolts 49. As a result, the ceiling frame 41 supports the ceiling wall main body 42 while being connected to the upper end of the drop frame 11 and the upper end of the front wall 30, and also supports the upper end of the front wall 30.

As shown in FIG. 5, each of the pair of left and right rear supports 71, 71 is made of an iron pipe material, and is located on the front side of the vertical frame portion 11 of the ropes frame 10 in the body. Further, the front frame 43 is oriented in the front-rear direction of the ceiling frame 43 so as to stand on the rear end of the door stopper rail portion 21a provided with a rail member made of sheet metal by screw connection on the outer peripheral surface side of the rear wheel fender portion 21. The frame 43 is configured to be connected to the rear end side. An intermediate portion of the pair of left and right rear supports 71, 71 in the vertical direction of the machine body is connected to an intermediate portion of the frame 11 in the vertical direction by a connecting rod 72 facing the body front and rear.

Thus, on both sides of the traveling body,
The vertical frame portion 11 and the rear support column 71 constitute a two-piece metal support column 70 in which intermediate portions in the vertical direction of the machine body are connected by a connection rod 72. The two-column support 70 is connected to the traveling machine body via the cushion rubbers 15 and 27, and is supported by the traveling machine body in a state where traveling vibration and engine vibration transmitted from the traveling machine body are attenuated by the cushion rubbers 15 and 27 and are alleviated. While supporting the ceiling wall 40.

As shown in FIG. 15, an outer frame made of a synthetic resin plate is formed on the left and right vertical frame portions 11 and the rear struts 71 so as to cover the lateral outer surfaces of the vertical frame portions 11 and the rear struts 71, respectively. The cover 73 is made of a synthetic resin plate so as to cover the horizontal inner surface sides of the vertical frame portion 11 and the rear support column 71, and is configured to be connected and supported across the vertical frame portion 11 and the rear support column 71. A cover 74 is provided. The outer cover 7
Reference numeral 3 denotes a cover mounting bracket 75 provided in the vertical frame portion 11, a rear cover portion 73 a whose rear end is connected to and supported by the vertical frame portion itself, and a front end side which is supported by the rear support 71. And a front cover portion 73 whose rear end is connected to the rear cover portion 73a.
b.

As shown in FIG. 2 and FIG. 3, each of the pair of side doors 50 has a pair of upper and lower hinge members 51 at the rear end and an open / close handle 52a at the front end. It is provided with a lock mechanism 52 and a sealing material 53 extending over the entire periphery, and is formed of a transparent glass plate formed to be a flat plate in a free state. As shown in FIG. 15 and FIG. 17, a support side hinge portion 51c connected to a door side hinge portion 51a of each of the pair of hinge members 51, 51 via a vertical support shaft 51b of the fuselage is attached to a mounting bolt. The outer cover 73 is fastened to the rear support column 71 by the fastening force with the front cover portion 73b of the outer cover 73 by the fastening force of the outer support 73. As a result, each of the two side doors 50 is supported by the rear column 71 so as to swing open and close around the vertical axis of the pivot shaft 51b, and the floor member 20 and the front side wall 30 are connected to each other. The entrance formed by the ceiling wall 40 and the rear column 70 is opened and closed.

As shown in FIG. 12, FIG. 14, and FIG. 15, the front-back frame 43 forming the lateral portion of the ceiling frame 41 is exposed from the ceiling wall main body 42 and acts to receive and act on the side door 50. An exposed support portion 71a which is provided with a frame portion 43a and which is exposed from the outer cover 72 on the rear support portion 71 and acts to receive and act on the side door 50.
Is provided. As shown in FIGS. 19 and 20, a locking means 55 made of a round bar material bent so that a hook 52b provided in the locking mechanism 52 is engaged to lock the side door 50 in a closed state is provided. The horizontal frame portion 36 and the vertical frame portion 37 are connected to each other at an intermediate portion in the vertical direction of the front wall on the inner surface side of the cabin of the side wall 30 to be fixed to a portion exhibiting excellent strength. Front wall 30
Of these, the side wall portion 39 forming the side door receiving surface is formed into a curved surface. That is, the first side wall at a high level located at the innermost side in the width direction of the front wall in the side wall portion at the level corresponding to the arrangement level of the lock means 55 and located at the upper end side of the front wall relative to the arrangement level of the lock means 55 Part 3
9a, the second side wall portion 39b is located on the outer side of the front side wall toward the upper end side of the front side wall 30 and is located at the lower side of the front side wall lower than the arrangement level of the locking means 55.
The lower end of the front wall has a curved surface that is positioned laterally outward of the front wall. As a result, the side door 50 can be closed and locked as shown in FIGS. 12, 15, and 19C.

That is, as shown in FIG. 19A, the side door 50 is a flat door in the free state.
As shown in FIG. 19B, as the side door 50 is closed, the upper end side of the side door 50 passes through the sealing material 53 before the hook 52b of the lock mechanism 52 is locked by the locking means 55. The lower end of the side door 50 is disposed between the first side wall portion 39a and the exposed frame portion 43a via a seal member 53 so that the second side wall portion 39b and the floor member 20 are separated.
Abut on the side surface of the step portion 25a. As shown in FIG. 19C, when the side door 50 is further closed, the side door 50 is elastically deformed so as to expand toward the inner surface of the door, and the hook 52b of the lock mechanism 52 is locked by the lock means 55. The locking means 55 locks the side door 50 with the side door 50 kept closed while being elastically deformed. Then
The side door 50 has a shape conforming to the curved surface of the side wall portion 39 due to elastic deformation, and the front side edge of the side door 50 is tightly sealed to the side wall portion 39 of the front side wall portion 30 via the sealing material 53. Abut At this time, as shown in FIG.
The exposed frame portion 43a of the ceiling frame 41 acts on the upper edge portion of the side door 50 via the sealing material 53, and the upper edge portion is pressed by the exposed frame portion 43a for elastic deformation of the side door 50, Side door 5
The upper edge portion 0 abuts on the exposed frame portion 43a via the sealing material 53 in a state of good airtightness. Rear wheel fender 21
The door stopper rail portion 21a provided on the side door 50 receives the lower edge portion of the side door 50 via the sealing material 53, and the lower edge portion of the door stopper rail portion 21a is elastically deformed by the door stopper rail portion 21a. When pressed, the lower edge of the side door 50 abuts on the door stopper rail 21a via the seal material 53 in a state of good airtightness. Further, at this time, as shown in FIG. 15, the exposed support column portion 71a of the rear support column 71 acts on the rear edge portion of the side door 50 via the sealing member 53, and the rear edge portion of the rear support column 71 due to the elastic deformation of the side door 50. The portion is pressed by the exposed support portion 71a, and the rear edge portion of the side door 50 abuts on the exposed support portion 71a via the sealing material 53 in an airtight state. Thereby, both side doors 50, 50 can be locked in a closed state with high airtightness.

As shown in FIGS. 4 and 18, the rear window 60 has a pair of left and right hinge members 61, 6 on the upper end side.
1 is constituted by a transparent glass plate provided with a lock mechanism 62 having an opening / closing handle 62a on the lower end side and a sealing material 63 over the entire periphery. As shown in FIG. 18, the pair of hinge members 6
The frame-side hinge 61c connected to the window-side hinge 61a of each of the first and 61 via a horizontal support shaft 61b is fastened and connected to the horizontal frame 12 of the ropes frame 10 by a mounting bolt 64. It is configured in. Accordingly, the rear window 60 is supported by the horizontal frame portion 12 of the lops frame 10 so as to swing up and down around a horizontal axis of the pivot shaft 61b, and the pair of left and right portions of the lops frame 10 is opened and closed. Opening / closing between the vertically facing frame portions 11 and 11 is performed.

As shown in FIGS. 15 and 18, the ceiling wall main body 42 is attached to the horizontal frame portion 12 of the ropes frame 10.
And a frame portion 12a exposed from the
When the rear window 60 is closed, the exposed frame portion 12a is attached to the upper edge of the rear window 60 by the sealing material 63.
And the connecting frame portion 10a of the rope frame 10 receives the lower edge of the rear window 60 via a sealing material 63, and furthermore, the pair of vertical frame portions of the rope frame 10 11,
Numeral 11 is configured to act on the lateral edge of the rear window 60 via a sealing material 63. This allows
The rear window 60 can be brought into contact with the ropes frame 10 via the sealing material 63 to be in a closed state with high airtightness.

As shown in FIGS. 5 and 8 and the like, the front and rear frames 43, 43 of the ceiling frame 41 are configured to be separably connected to the rope frame 10 by connecting bolts 46, and the rear support columns 71, Each of the connecting rods 72 is configured to be separably connected to the vertical frame portion 11 by a connecting bolt 76, and each of the two rear supports 71, 71 is connected to a door stopper rail 21 a of the floor member 20. It is configured to be separably connected by a bolt 77. That is, FIG.
As shown in FIG. 8, the ceiling frame 41, the left and right rear supports 71, 71, and the left and right connecting rods 72, 72 are assembled into a unit state in which the ceiling frame 41, the left and right connecting rods 72, 72 are connected in a predetermined connecting state outside the traveling machine body. It is possible to collectively assemble the rope frame 10 and the rear wheel fender 21 of the floor member 20.

As shown in FIG. 13 and FIG.
The cabin air conditioner 80 is provided between the ceiling wall main body 42 and the ceiling interior material 40a while being supported by a bracket 41a as shown in FIG. The air in the cabin is heated and cooled by suctioning the air in the cabin from an intake port formed by an intake cylinder 81 at the front end of the material 40a, and the air after the heat exchange processing is used for the cabin air conditioner 8 of the ceiling interior material 40a.
It is configured to be fed into the cabin from a blow port formed by the exhaust pipe 82 behind the zero.

As shown in FIG. 3 and FIG. 20, the drain water discharge portion of the cabin air conditioner 80 is connected to a drainage hose passing through the second hollow portion 35b of the front side wall 30, so that the cabin air conditioner 80 is provided. A drain drain 83 is provided in the second hollow portion 35b, and drain water from the cabin air conditioner 80 is discharged outside from the lower end of the operating cabin C using the second hollow portion 35b as a drain. .

As shown in FIGS. 15 and 16, the pair of up-down frame portions 11, 11
A tank housing space S is provided between the outer cover 73 and the inner cover 74 provided on one of the up-down frame portions 11. In this tank housing space S, the cleaning liquid tank 84 is provided with the frame 11 facing up and down and the rear support 71.
The container is supported and accommodated by a tank support 85 connected to the inner cover 74, and the supply port 84 a of the cleaning liquid tank 84 can be opened and closed through a working opening 74 a provided in the inner cover 74, and the cleaning liquid can be supplied to the cleaning liquid tank 84. It is configured as follows. A cleaning liquid supply hose 87 having a cleaning liquid pump 86 is connected to a discharge portion of the cleaning liquid tank 84, and the cleaning liquid pump 86 is configured to take out the cleaning liquid from the tank 84 and supply the cleaning liquid to the outer surface side of the rear window 60. That is, the outer cover 73 and the inner cover 74
The space between the drop frame 10 and the rear column 71 between them is used as a space for storing the cleaning liquid, so that the cleaning liquid can be supplied to the rear window 60.

As shown in FIG. 13, the first hollow portion 35a of the hollow portion 35 of the front side wall 30 is
The first hollow portion 35a is provided with a cleaning liquid supply port 86 for supplying a window cleaning liquid to the inside of the cabin on the front wall 30 in addition to a hollow portion partitioned from other portions such as 5b. A cleaning liquid supply hose 89 having a cleaning liquid pump 88 is connected to the first hollow portion 35a, and the cleaning liquid pump 88 is configured to take out the cleaning liquid from the first hollow portion 35a and supply the cleaning liquid to the outer surface side of the operation front window 34. I have. That is, the first of the front side wall 30
The hollow portion 35a is used for storing the cleaning liquid, and the cleaning liquid can be supplied to the operation front window 34.

[Alternative Embodiment] FIG. 21 shows a tractor provided with an operating cabin C according to another embodiment. The operating cabin C of this tractor is similar to the operating cabin C shown in FIGS. A floor member 20 having a pair of left and right rear wheel fender portions 21 and 21;
4 and the like, a resin-made hollow front side wall 30, a ceiling wall 40 composed of a metal ceiling frame 41 and a resin plate-made ceiling wall main body 42, one rear window 60, the left frame 10 and the left and right. A pair of rear struts 71, 71 are provided. However, it differs from the driving cabin C shown in FIGS. 1 and 2 in the following points.

That is, the floor member 20, the front side wall 30,
A ceiling wall 40, a single rear window 60, a lops frame 10, and a pair of left and right rear supports 71, 71;
It is configured as a weather cabin without left and right side doors. As clearly shown in FIG. 22, the left and right rear wheel fenders 21, instead of the door stopper rail 21a,
The floor member 20 is provided with a handle 90 to be attached to the support member 21 and a support column 91 for supporting the rear column 71 in place of the door stopper rail portion 21a and for mounting the rear column 71 to the left and right rear wheel fender portions 21 and 21. It is configured so that

The housing space S between the outer cover 73 and the inner cover 74 is constructed so as to house a tool box, a radio, and the like in addition to the cleaning liquid tank 84 as in the above embodiment. You may. Therefore, the accommodation space S is referred to as a device accommodation space.

[Brief description of the drawings]

Fig. 1 Side view of the entire tractor

FIG. 2 is a perspective view of the driving cabin with a side door closed.

FIG. 3 is a perspective view of the driving cabin with a side door opened.

FIG. 4 is a rear view of the driving cabin.

FIG. 5 is a perspective view of a rope frame and a ceiling frame.

FIG. 6 is a rear view of the ropes frame.

FIG. 7 is a perspective view in a state where a ceiling frame and a rear support are removed.

FIG. 8 is a side view in a state where a ceiling frame and a rear support are removed.

FIG. 9 is a perspective view of a floor frame.

FIG. 10 is a side view showing the mounting structure on the rear side of the floor member.

FIG. 11 is a side view showing the mounting structure on the front side of the floor member.

FIG. 12 is a sectional view in a state where a side door is closed.

FIG. 13 is a longitudinal sectional side view of a cabin air conditioner installation section.

FIG. 14 is a cross-sectional front view of the cabin air-conditioning unit installation section.

FIG. 15 is a vertical cross-sectional view of a cleaning liquid tank and a side door mounting portion.

FIG. 16 is a cross-sectional rear view of the cleaning liquid tank mounting portion.

FIG. 17 is a longitudinal sectional front view of the mounting structure of the side door hinge member.

FIG. 18 is a sectional view of a rear window.

FIG. 19 is an explanatory diagram of a side door closing operation.

FIG. 20 is a cross-sectional view of a lock means disposing portion.

FIG. 21 is a side view of an entire tractor having another embodiment.

FIG. 22 is a side view of the floor member of the weather cabin.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Rope frame 11 Airframe vertical frame part 12 Aircraft horizontal frame part 12a Exposed frame part 15, 27 Buffer material 20 Floor member 21 Rear wheel fender part 21a Door stopper rail part 30 Front side wall 34 Driving front window 40 Ceiling wall 41 Ceiling frame 42 Ceiling wall body 46, 76, 77 Connecting bolt 50 Side door 60 Rear window 71 Rear column 72 Connecting rod 73 Outer cover 74 Inner cover S Equipment storage space

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Tadashi Takami 64 Ishizukita-cho, Sakai-shi, Osaka Inside Kubota Sakai Works

Claims (8)

[Claims] 1. A floor member supported by a traveling body via a cushioning member, a ropes frame supported by a rear portion of the traveling body via a cushioning member, and a driving and supported by the traveling body via a cushioning member. A front wall made of resin having a front window, and a ceiling wall extending between the upper end of the front wall and the upper end of the ropes frame, and the ceiling wall is formed of an upper end of the front wall and the ropes frame. An operating cabin of a tractor, comprising a metal ceiling frame connected to the upper end and a ceiling wall body made of a resin plate connected to the ceiling frame. 2. The contactor according to claim 1, further comprising a rear support standing upright on the floor member and supporting the ceiling frame at a front side of each of the pair of left and right body vertically-oriented frame portions of the ropes frame. Driving cabin. 3. The operation of the contactor according to claim 2, wherein an intermediate portion in the vertical direction of the vehicle body between the vertical frame portion of the ropes frame and the rear support is connected by a connecting rod extending in the vertical direction of the vehicle. cabin. 4. A structure in which the ceiling frame and the ropes frame, the connecting rod and the body vertical frame portion, and the rear column and the floor member are connected by connecting bolts, respectively. 4. The operating cabin of a contactor according to claim 3, wherein the operating cabin is provided. 5. A door door for swinging openable and closable, which opens and closes an entrance, and a door stopper rail portion is provided on an outer surface side of a rear wheel fender portion of the floor member.
The operating cabin of a contactor according to any one of claims 1 to 4, wherein a lower edge of the side door is received by the door stopper rail so that the side door is closed. 6. The operating cabin of a contactor according to claim 5, wherein a lower end side of said rear column is connected to said door stopper rail. 7. An outer cover for covering the body vertical direction frame portion of the ropes frame and a lateral outer surface side of the rear support post, and an inner cover for covering the machine body vertical direction frame portion and an inner surface side of the rear support column. The operating cabin of a contactor according to any one of claims 2 to 6, further comprising a device accommodation space between the outer cover and the inner cover. 8. An exposed frame which is provided with a swingable openable / closable rear window for opening / closing between the pair of body vertical frames of the rope frame, and which is exposed from the ceiling wall main body to the body horizontal frame of the rope frame. 8. A vehicle according to claim 1, wherein said rear window is closed by being received by said pair of body vertically-oriented frame portions of said rope frame and said exposed frame portion. The operating cabin of the contactor according to claim 1.