JPH09252629A - Cabin door opening and closing device for mobile vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve problems that the door of the cabin of a mobile vehicle is opened by a narrow opening width at an opening position to hinder the getting on/off of an operator and that the door can not bear to be used for long terms use because a damper provided to reduce the operation force of opening and closing of the door is always in a reduced state when the door is closed and internal gas pressure is kept high to damage its quality. SOLUTION: For example, the cabin for the operator to sit is provided on the body of a moving vehicle such as a combine harvester and the door 4 is pivotally fixed to one side of this cabin in a state of freely opening and closing. Then the damper 7 the other side of which is pivotally fixed to the frame 6 on the fixing side of the cabin is provided at the tip part of a fixing arm 5 the base part of which is mounted to the inside of this door 4 and which is projected forward obliquely by pivotally fixing and connecting. This damper 7 makes the cabin door opening and closing device of the moving vehicle such a device that it keeps its stretched state at the opening position and closing position of the door 4 and keeps its reduced state at a midway position of opening and closing operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cabin door opening / closing device for a moving vehicle and belongs to a technical field relating to the vehicle.

[0002]

2. Description of the Related Art Conventionally, a door constituting a cabin of a moving vehicle can be easily opened and closed by reducing an operation force at the time of opening and closing, and an open position or a closed position can be automatically opened or closed by utilizing a tension force. It was configured to use a damper to hold it.

[0003]

A conventional configuration example is shown in FIG.
As shown in FIG. 2, the tip end of a damper d having a base portion pivotally attached to the side wall c of the machine body near the pivotal attachment portion b of the door a to be opened and closed is pivotally attached to the door for opening and closing. Then, the damper d
The door a is fully opened at the top dead center of extension and the door is closed at the bottom dead center of contraction.

Therefore, the degree of opening of the door a is limited by the total length of the damper d, so that the door a cannot be opened widely, which hinders getting on and off. Therefore, as described above, the damper is provided with the side wall c of the fuselage close to the pivot portion b of the door a to be opened and closed.
Since a structure in which the base is pivotally attached is unavoidable, the space in the vicinity of the mounting portion is limited, which hinders various pipes in the cabin. Furthermore, damper-d
When the door is closed, the gas is always in a contracted state and the internal gas maintains a high pressure, which may impair the quality and make it unusable for a long period of time.

[0005]

The present invention employs the following technical means in order to solve the above-mentioned problems of the conventional type. That is, a cabin 3 on which a driver sits is provided on a vehicle body 2 of a moving vehicle 1, and a door 4 which is one of the constituent members of the cabin 3 is pivotally attached so as to be freely opened and closed, and a base portion is provided inside the door 4. Is attached to the distal end of the mounting arm 5 which is mounted and protruded, and one end of a damper 7 whose other end is pivotally attached to the fixed side frame 6 of the cabin 3 is pivotally connected to the damper 7. Is a cabin door opening / closing device for a moving vehicle, which is configured to maintain an extended state at the open position and the closed position of the door 4 and to be in a contracted state at an intermediate position of the opening / closing operation.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments in which the cabin according to the present invention is used as a combine will be described below. First, the configuration will be described. The moving vehicle 1 is a combine and has a working machine 9 composed of a threshing device or the like mounted on a vehicle body 2 having a crawler 8 and a cutting pretreatment device 10 provided at a front portion thereof. The cabin 3 is provided in the front part of the vehicle body 2 and, as is well known in the art, has an operator seated therein and an operating device for operating the moving vehicle, the working machine 9 and the pre-mowing treatment device 10 installed therein. I am configuring.

The door 4 is constructed such that one side of the cabin 3 is pivotally attached to the machine frame on the rear side so that the front side can be opened and closed greatly, and a handle 11 is attached to the front part.
Further, although not shown, the handle 11 is internally provided with a lock mechanism so that it can be kept closed when the door 4 is tightened. The mounting arm 5 has its base fixed to the inner upper part of the door 4 close to the pivot position of the door 4, and extends so that the tip of the mounting arm 5 projects obliquely forward when the door 4 is tightened. Is provided.

As shown in FIG. 1, the damper 7 has its other end pivotally attached to the fixed side frame 6 on the upper portion of the cabin 3.
One end is pivotally connected to the tip of the mounting arm 5. Therefore, as is apparent from FIG. 1, the door 4 can be opened by the total length of the mounting arm 5 and the damper 7 at the maximum extension when it is fully opened, and when the door 4 is closed, the mounting arm 5 is opened. The damper 7 projects inward and is held in an extended state. The damper 7 is constructed so that it can be contracted at an intermediate position of opening and closing to cross the fulcrum.

Reference numeral 12 represents a pipe of the air conditioner. Reference numeral 13 is an air conditioner unit. Another Example 1 Next, another example will be described with reference to FIGS. 5, 6, and 7. The combine, as shown in FIG.
A threshing device 31 and a grain tank 32 are mounted on the upper part, and a mowing pretreatment device 33 is provided at the front part so as to be freely moved up and down. In addition, 33a is a weeding rod, and 34 is an outlet for discharging the grain.
A gear is shown.

The driver's seat 35 is provided on one side of the front part of the traveling vehicle body 30 and is open to the right side (the same applies to the forward direction) so that the operator can get on and off the vehicle. The panel 36 is arranged so that it can be operated. The operation panel 36 is provided with a power steering lever 37 at the right end, and the front panel 36a is narrowed in the front-rear width so that the operator can easily approach the front side. Further, since the tachometer, fuel gauge, awameta, etc. are originally provided on the front panel 36a because they require a relatively large space, they are moved to the left side and installed, and as described above, the front panel 36a. The front-back width of 36a is made narrow.

As described above, since the front-back width of the front panel 36a is narrowed as shown in FIG. 6, the operator, as shown in FIG.
It is possible to monitor the pre-mowing treatment device 33 through the panel by approaching a. Therefore, the operator can surely perform the work while visually confirming the positional relationship between the tip of the weed rod 33a and the grain culm row, the cutting and conveying state, and the like.

The above-described structure is effective when the operator has to lean over the panel to operate the combiner, for example, when the operating lever of the parking brake is on the front side. Available. Second Embodiment Next, an example will be described in which the combine 40 shown in FIG. 7 is configured such that the step 40 on the front side can be moved up and down in the cockpit 35.

The step 40 is attached to the piston 41a side of the elevating damper 41 and is operated by the action of gas pressure in the damper. That is, the lift damper 41 has the cylinder 41b side fixed to the fixed frame 42, and the piston 41a side step 40 as described above.
It is connected to. As is well known, the elevating damper-41 connects the upper chamber and the lower chamber with a communication passage having a valve,
The valve is opened in association with the operation of the operating rod 43 to move the gas to extend the valve.

The operating rod 43 is configured to be connected to the operating lever 44 provided in the step 40 via a connecting rod 45, an L-shaped rod 46, a lot 47, and an L-shaped operating rod 48. And L
The mold rod 46 has a fulcrum a at its intermediate portion, and the L-shaped operating rod 48 also has the intermediate portion as a pivot fulcrum a. The step 40 is supported on its outer periphery so that it can be moved up and down.

The ascending operation of the step 40 constructed as described above is performed by operating the operation lever 44.
The operating rod 43 is operated through the die rod 46, the lot 47, and the L-shaped operating rod 48 to open the valve and move the gas from the upper chamber to the lower chamber to push out the piston 41a and push the step 40 upward. The descent operation in step 40 is performed by operating the operation lever 44 to open the valve and at the same time as in step 40.
Is performed by the operator pushing down.

By such an operation, step 40
Although it moves up and down, since the operation lever 44 always moves integrally even if it moves to the upper position or the lower position, it has a feature that the operation can be easily performed at any position. Operation
By operating the step 40 up and down according to the height of each person, a sufficient forward field of view can be secured and an appropriate driving can be performed.

Next, the operation of the embodiment of the present invention will be described. First, in the combine work, the operator sits in the cabin 3 and the traveling operation of the moving vehicle 1 is performed, and together with the operation of the working machine 9 and the pre-mowing treatment device 10, the mowing threshing work in the field is started. . The operator is a cabin 3 where airtightness is maintained and the air conditioner functions properly.
You can continue to operate comfortably indoors.

Next, the opening and closing of the door 4 will be described. When the door 4 is operated outward after the lock mechanism is released by grasping the handle 11 (same as in the room), the damper 7 is operated.
The gas pressure inside the work begins to expand, opening outward. In this way, as shown in FIG. 1, the door 4 opens outward with the pivot portion as a fulcrum as the damper 7 extends, and when the door 4 reaches the fully open state, the gas pressure of the damper 7 causes the door 4 to open. Hold. At this time, the door 4 is attached
It can be opened widely due to the total length of the frame 5 and the extended length of the damper 7, and it can be opened to a sufficient size that does not hinder the loading and unloading of the operator.

Next, the operation of closing the door 4 is performed by the handle 11
When the operator grips and operates in the tightening direction, the damper 7 is sequentially compressed and contracted, and the damper 7 reaches a state where the damper 7 exceeds the fulcrum, and thereafter, the damper 7 extends and the door 4 is completely closed. When the door 4 is closed, the damper 7 extends and the gas pressure decreases, so that the damper 7 maintains a state in which the quality is not unreasonable.

[0020]

As described above, according to the present invention, a cabin on which a driver sits is provided on a vehicle body of a moving vehicle, and a door, which is one of the components of the cabin, is pivotally mounted so as to be freely opened and closed. The base end is attached to the inside of the door so as to project, and one end of a damper whose other end is pivotally attached to the fixed side frame of the cabin is pivotally connected to the tip of the mounting arm. Since the damper is arranged so as to maintain the extended state at the open position and the closed position of the door and to be in the contracted state at the midway position of the opening / closing operation, the door has the same length as the mounting arm and the extended damper. Since it can be opened by the total length of the above, and it can be opened wider than before, it became easy to get on and off the operator without any trouble. Further, since the damper can pivot the base portion at a position distant from the pivotal attachment portion of the door, an effective space can be provided in the vicinity of the pivotal attachment portion of the door, and various piping in the cabin can be performed without any trouble. Since the damper is in an extended state when the door is closed, the damper can be held in a state where the internal gas pressure is lowered, the quality is not impaired, and the damper can withstand long-term use.

[Brief description of drawings]

FIG. 1 is an action plan view showing an embodiment of the present invention.

FIG. 2 is an explanatory plan view of a conventional type.

FIG. 3 is a partially exploded perspective view showing an embodiment of the present invention.

FIG. 4 is a side view of one embodiment of the present invention.

FIG. 5 is a side view of another embodiment 1 of the present invention.

FIG. 6 is a plan view of another embodiment 1 of the present invention.

FIG. 7 is a side view of another embodiment 1 of the present invention.

FIG. 8 is a side view of a main part according to a second embodiment of the present invention.

FIG. 9 is a side view of another embodiment 2 of the present invention.

[Explanation of symbols]

1 vehicle 2 vehicle body 3
Cabin 4 Door 5 Mounting arm 6
Fixed side frame 7 damper

Claims (1)

[Claims] 1. A cabin on which a driver sits is provided on a vehicle body of a moving vehicle, and a door, which is one of the constituent members of the cabin, is pivotally mounted to be freely opened and closed, and a base is mounted inside the door. The other end of the damper is pivotally connected to the fixed side frame of the cabin, and the damper is connected to the open position of the door. A cabin door opening / closing device for a moving vehicle configured to maintain an extended state at a closed position and a contracted state at an intermediate position of opening / closing operation