JPH0537586U - Boarding equipment for mobile agricultural machinery - Google Patents

Abstract

(57) [Abstract] [Purpose] The control part A is made to be able to move up and down, which improves the visibility during work and enables the user to get on and off the control part A safely. [Structure] The control section A is configured to be vertically movable up and down with respect to the machine body frame 3, and is integrally lifted between the lower portion of the control section floor 12 and the machine body frame 3 as the control section A is lifted by a predetermined amount L or more. Step 26 is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a boarding / alighting device for a mobile agricultural machine, and more particularly, to a step for boarding / alighting a device which is mounted on a combine or a tractor, etc., in which a control unit can be moved up and down.

[0002]

[Prior Art]

 Conventionally, it is well known that a step is provided in an airframe below the control floor so that it is convenient to get on and off the control section. In addition, a combine that allows the control section to move up and down with respect to the aircraft frame to raise the control section during work to improve visibility and to lower the control section when traveling on the road to perform stable traveling is a special feature. It is known from Japanese Patent Laid-Open No. 53-11722.

[0003]

[Problems to be solved by the device]

 The above-mentioned known one is excellent in workability because the control part can be vertically moved up and down with respect to the body frame, but on the other hand, when the control part is lowered, the step provided on the control part side is the body frame. It is necessary to place a step at a relatively high position because it interferes with. Therefore, when the control section was raised, there was too much clearance between the step and the ground, and getting on and off the control section was only possible with the control section lowered. Therefore, even if the operator suspends the work in a state where the control section is raised and temporarily gets off the vehicle, the operator has to lower the control section each time, which is troublesome. Moreover, if the user skips the operation part without skipping the operation, he or she may fall down.

[0004]

[Means for Solving the Problems]

 The present invention is intended to solve the above-mentioned problems, and the technical means thereof is to make a control section A vertically movable with respect to a machine body frame 3 by a hydraulic actuator 20 and to provide a moving frame including a step 26. 27 is vertically movably installed between the lower part of the control section floor 12 and the body frame 3, and is connected so that the moving frame 27 is integrally lifted when the control section A is lifted by a predetermined amount L or more. And are characterized by.

[0005]

[Action]

 When boarding the control part A, the step 26 (29, 30) provided between the lower part of the control part floor 12 and the body frame 3 is used to get on the control part floor 12. Then, when performing the work, the control section A is raised by the hydraulic actuator 20, and the work is performed in a comfortable posture while sitting on the control seat 13 at a high position with a good forward field of view. When finishing the work and descending from the control section A, the control section is lowered, and similarly, the operator descends to the ground through steps. Furthermore, when it is troublesome to lower the control section A one by one when interrupting the work, or when the lifting operation of the lifting device C cannot be performed due to a trouble such as the electromagnetic switching valve of the hydraulic actuator 20. Can safely step on the ground through steps 26 (29, 30) that are rising integrally with the rise of the control unit A, or conversely, use this step to get on the control unit comfortably.

[0006]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 3, the combine 1 is equipped with a threshing device on the left side of a machine frame 3 having left and right crawler traveling devices 2 and 2. And the control part A is provided on the right side of the threshing device. An engine and a radiator cooling device are arranged behind the control section A 1, and the sides thereof are covered with a cover 4. Further, in front of the control unit A, a pretreatment device B including a grass body 5, a raising device 6, a mowing device 7, and a transport device 8 for transporting the mowing culms to the threshing device, which covers the entire width of the machine. Is mounted so that it can be rotated up and down. Further, a Glen tank 9 is erected by appropriate columns at the upper parts of the threshing device, the engine, and the radiator cooling device. In addition, 10 is a paddy discharge auger.

As shown in FIGS. 3 and 4, the control section A is covered with a cabin 11, and the control section floor 12 is sandwiched in the cabin 11 to control the steering seat 13 in the rear section and the steering section in the front section. A front panel 15 to which the lever 14 and the like are attached is provided. The control section A (cabin 11) is vertically movable in the range from the position indicated by the solid line in FIG. 3 to the maximum raised position indicated by the alternate long and short dash line. The lifting device C will be described below with reference to FIG. 5. Brackets 16, 16 and 17 are attached to the rear surface of the cabin 11. The brackets 16 and 16 pivotally support rollers 18 and so on, and the rollers 18 and 16 are fitted in guide rails 19 and 19 formed of channel members having a C-shaped cross section, which are erected from the machine body frame 3. The piston 20a of the hydraulic actuator 20 is fixed to the central bracket 17, and the other end of the cylinder 20b is fixed to the machine body frame 3. Here, when a switch 21 for raising and lowering the control section provided in the cabin 11 is operated, an electromagnetic switching valve (not shown) is switched, the hydraulic actuator 20 is operated, and the cabin 11 is guided by the rollers 18 ... It goes up and down along the rails 19, 19.

Reference numeral 22 denotes a lowering stopper for the control section A, which is pivotally supported by the bracket 16 so as to be rotatable. The descent prevention stopper 22 prevents the descent of the control part A by contacting any of the engaging parts 19a, 19b, 19c fixed to the guide rail 19, and the control part due to a failure of the hydraulic actuator 20 or the like. Prevent unintended descent of. Therefore, when lowering the control section A, first, the release lever 24 provided on the vertical control section A is pulled against the spring 23 to retract the lowering prevention stopper 22 from the engaging sections 19a, 19b, 19c. Then, the switch 21 for vertically moving the control unit is operated to descend.

Next, the boarding / alighting device D of the control unit A will be described with reference to FIG. 5. A body frame 3 extends below the floor 12 of the cabin 11 from the rear. Further, as shown in detail in FIG. 1 or 2, on the machine body frame 3, base guide rails 25 having a C-shaped or U-shaped cross section are detachably provided by bolts 25a. In the base guide rails 25, 25, moving frames 27, 27 having a C-shaped or U-shaped cross section, in which a step 26 is integrally welded to the lower part, are vertically movably inserted. In the lower part of the floor 12 of the cabin 11, rectangular upper frames 28, 28 detachably fixed by bolts 28a and the like are further fitted. The stoppers 27a, 27a of the upper frames 28, 28 are fixed to the upper portions of the moving frames 27, 27 by stoppers 27a, 27a for closing a part of both ends of the C-shaped cross section by means such as welding. It engages with protrusions 28b and 28b fixed to the lower end from below by bolts or the like to prevent the moving frames 27 and 27 from coming out downward. Therefore, when the cabin 11 rises by a predetermined amount L or more, the protrusions 28b and 28b of the upper frames 28 and 28 come into contact with the stoppers 27a and 27a of the moving frames 27 and 27, so that the moving frames 27 and 27 are raised together.

Further, separate steps 29 and 30 are fixed on the upper frames 28 and 28 and the body frame 3, respectively, and when the cabin 11 is at the lowest position, these steps 26 and 29 are omitted. The step 30 provided on the body frame 3 is superposed to form one step. Then, as the cabin 11 rises, the step 29 fixed to the upper frames 28, 28 is separated from the lower two steps 26, 30 to form two steps. Then, when the cabin 11 further rises, as described above, the step 26 of the moving frames 27, 27 is separated from the step 30 fixed to the machine body frame 3 and acts to form three steps. Similarly, when the cabin 11 descends, first, the moving frames 27, 27 are guided by the base guide rails 25, 25 to be housed in the base guide rails 25, 25, and then the upper frame 28, 25. 28 descends while sliding in the moving frames 27, 27, and is housed in the moving frames 27, 27. Therefore, in the lowest position of the cabin 11, the moving frames 27, 27 and the upper frames 28, 28 are compactly housed in the base guide rails 25, 25, and the individual steps 29, 26, 30 are overlapped. Form an integrated single step.

Therefore, when the control part A is descending, the control part floor 12 can be comfortably climbed onto the control part floor 12 through the one-step step overlapping on the body frame 3, and the control part A can be moved to the hydraulic actuator 20. Thus, the user can work in a comfortable posture while sitting on the cockpit 13 at a high position with good front visibility. Further, when the operator finishes the work and descends from the control section A, the control section A can be lowered and similarly, the operator can get on the ground through one step. Further, when the work is temporarily stopped and the operator gets off the control section A, or when the elevator C cannot be lowered due to a trouble of the solenoid valve of the hydraulic actuator 20, etc., the control section A is raised. It is possible to safely step on the ground by using the two-step or three-step steps that are rising together, and, conversely, use this step when boarding the control section A without difficulty. You can ride safely. In addition, when the engine 11 or the pretreatment section B is maintained using the space below the cabin 11 with the cabin 11 raised, it is also effective for getting on and off the control section. It should be noted that the boarding / alighting device D can also be expected to have an effect as a steadying member when the cabin 11 is cantilevered by the hydraulic actuator 20 or the guide rail 19 provided on the back portion. Although the moving frames 27 1, 27 are inserted into the base guide rails 25, 25, the base guide rails 25, 25 may be omitted.

[0012]

[Effect of the device]

 As described above, according to the present invention, since the control section A can be vertically moved up and down and the step 26 is provided between the lower portion of the control section floor 12 and the body frame 3, it is possible to easily get on and off the control section. Further, in the working state, the maneuvering unit A can be raised to a high position without obstructing the view, and the maneuvering unit can be maneuvered in a comfortable sitting position at all times. Moreover, since the movable frame 27 including the step 26 can move up and down and is integrally lifted when the maneuvering unit A is lifted by a predetermined amount L or more, the maneuvering unit A can be operated when the work is interrupted. It is not necessary to perform the descending operation one by one, and it is possible to safely step on the ground by using the step 26 appropriately positioned between the control unit A and the ground. On the contrary, the step 26 can be utilized to easily get on the control section A.

[Brief description of drawings]

FIG. 1 is a perspective view showing a boarding / alighting device of a control unit.

FIG. 2 is a partial perspective view showing a partial cross section of the boarding / alighting device.

FIG. 3 is a perspective view of a combine.

FIG. 4 is a perspective view showing a part inside the control unit.

FIG. 5 is a perspective view showing a lifting device for a control section.

[Explanation of symbols]

 A Control unit 3 Airframe frame 12 Control unit floor 20 Hydraulic actuator 25 Moving frame 26 Steps

Claims (1)

[Scope of utility model registration request] 1. A control unit is vertically movable with respect to a machine frame by a hydraulic actuator, and a movable frame having steps is erected vertically between a lower part of the control section floor and the machine frame, and the movable frame is provided. A boarding / alighting device for a mobile agricultural machine, wherein the boarding / alighting device is connected so as to be integrally lifted when the control section is lifted by a predetermined amount or more.