JP2009149308A - Operating device of utility vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To less frequently cause an operator to make irregular movement, for example, to bend every time when a servicing section is vertically moved, and facilitate adjustment of vehicle speed and vertical movement of the servicing section. <P>SOLUTION: A utility vehicle has a round shaped steering wheel (1) for steering in the travelling direction, and a main shift lever (4) located at one side of the round shaped steering wheel (1) for switching forward and reverse and performing main change of running speed. A gripping section (4a) installed on the top end part of the main shift lever (4) has, on the surface to the operator's side, a vertical adjustment button (6) for making vertical adjustment of the servicing section (5), a lowering button (8) for lowering the servicing section (5) down to a set position and a raising button (7) for raising the servicing section up to a set position. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an operating device for a work vehicle.

  In a work vehicle having a circular handle, conventionally, an operation for raising and lowering a working unit is generally performed by using a power steering lever for tilting in the forward and backward directions for steering in the traveling direction.

JP-A 63-275432 JP-A-10-127144

  As described above, in a work vehicle having a circular handle, conventionally, the operation of raising and lowering the working portion is generally performed by using the power steering lever for tilting forward and backward to steer in the traveling direction. there were.

  However, in the case of maneuvering with a circular handle instead of such a power steering lever, only the lifting and lowering operation of the working unit is performed independently at a position away from the handle. The movement was very troublesome.

In order to solve the above-mentioned problems, the present invention takes the following technical means.
That is, a circular handle (1) that steers in the traveling direction and a main transmission lever (4) that is arranged on one side of the circular handle (1) and performs forward / reverse switching and main shift of the traveling speed. And a vertical adjustment button (6) for adjusting the raising and lowering of the working part (5) on the operator side surface of the grip part (4a) provided at the upper end part of the main transmission lever (4), and a working part ( 5) A work vehicle operating device comprising a lowering button (8) for lowering to a set position and a raising button (7) for raising.

  According to the present invention, in a work vehicle that steers in the traveling direction by the circular handle (1), the grip portion (4a) provided at the upper end of the main transmission lever (4) disposed on one side of the circular handle (1). On the operator side, the up / down adjustment button (6) for adjusting the raising / lowering of the working unit (5), the lowering button (8) for lowering the working unit (5) to the set position, and the raising button for raising (7) is provided, and these operation buttons that need to be operated frequently can be operated with the thumb, so that the operator's steering posture by the circular handle (1) is changed every time the working unit (5) is moved up and down. It is unlikely to bend in an irregular manner. Grasp the circular handle (1) with one hand and the main speed change lever (4) with the other hand to adjust the vehicle speed and work part (5) Easily adjust the lift Can.

The side view which shows the lock of the brake pedal by the parking brake button of a steering wheel. The front view which shows the lock of the brake pedal by the parking brake button of a steering wheel. (A) The top view which shows the state of notching the front side part of a circular handle and gripping the right side. (B) The side view which shows the state of notching the front side part of a circular handle and gripping the right side. The side view which shows the monitoring state of the cutting position by the circular handle which notched the front side part. (A) The top view which shows the state which has arrange | positioned the main shift lever for driving | running | working on the right end side of an operation console. (B) The front view which shows the state which has arrange | positioned the cutting raising / lowering button in the grip part of the main transmission lever. The top view which shows the state which has arrange | positioned the armrest which can be rotated upwards in the right side position of an operation seat. The side view which shows the state which has arrange | positioned the main transmission lever in the armrest front end part of the operation seat right side position. The side view which shows the action | operation mechanism relationship of the pitching control and rolling control of a traveling apparatus. The side view which shows the action mechanism relationship of the rolling control of the conventional traveling apparatus. The block diagram which shows the automatic circuit which prevents the malfunctioning of the horizontal control of a vehicle body beforehand. The block diagram which shows the automatic circuit which performs safe parking brake braking on the slope. (A) The top view which shows the position change state of the side mirror attached to the threshing room entrance part. (B) The side view which shows the position change state of the side mirror attached to the threshing room entrance part. The structure figure which shows the detail of a side mirror, and the expansion perspective view which shows the position change mechanism of a mirror. The side view which shows the whole structure of a combine.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings regarding a combine as a work vehicle or the like.
FIG. 14 shows the overall structure of the combine. A traveling device 11 having a pair of left and right traveling crawlers 10 traveling on the soil surface is disposed on the lower side of the traveling frame 9.

  A grain tank 13 for threshing and supplying the threshing grains which are supplied by being nipped and conveyed to the feed chain 12 on the traveling frame 9, and for collecting and temporarily storing the threshed grains, is stored in the tank 13. A threshing device 15 provided with a threshing auger 14 for discharging the grains to the outside of the machine is placed, and a waste processing device 16 for discharging the threshed waste is installed at the rear end of the threshing device 15. It is built up.

  In front of the threshing device 15, a weeding body 17 for weeding the uncut cereal cocoon from the front side, a pulling part 18 for causing the sown cereal cocoon, a cutting blade part 19 for reaping the caused cereal cocoon, and this cutting A mowing device as the working unit 5 having an adjustment conveying unit 20 and the like that feeds the feed chain 12 by adjusting the working depth while scraping the cereal can be raised and lowered with respect to the soil surface by a hydraulically driven telescopic cylinder 21. It is suspended from the front end of the traveling frame 9.

  An operating device 22 for controlling the operation of the combine is provided on one side of the mowing device 5 and an operation seat 23 for this operation is provided. The Glen tank 13 is disposed on the rear side of the operation seat 23 and the engine on the lower side. 24, and a cabin 25 that covers the operation device 22 and the operation seat 23 is disposed. The traveling device 11, the threshing device 15, the reaping device 5, the operating device 22, the engine 24, the cabin 25, and the like constitute a combine vehicle body 26.

  As shown in FIGS. 1 and 2, an operating table 27 having a meter panel on the upper surface portion is arranged at the front end position of the operating device 22 in the cabin 25, and the handle support shaft 28 is rotated to an appropriate position of the operating table 27. A parking brake that is tilted rearward so as to be movable, and is provided with the circular handle 1 fixed to the upper end portion of the handle support shaft 28, and locked on the upper surface of the central portion of the circular handle 1 in a braking action state during parking. Button 3 is provided in a projecting manner.

  A step 29 is extended rearward from the lower end of the operation table 27, and the operation seat 23 is arranged on the step 29 so as to face the operation table 27, and the combine running state is braked. The foot plate 2a of the brake pedal 2 is positioned above the step 29, and the fulcrum portion 2b is supported by the traveling frame 9 on the lower surface side of the step 29.

  One end portion of the brake wire 30 is connected to the rear end portion further extended from the fulcrum portion 2b of the brake pedal 2, and the other end portion of the wire 30 is provided in the traveling transmission case 31 and the traveling clutch. The left and right action arms 32 that act on the brake are configured to be operatively connected to the left and right at the same time.

  A parking brake rod 33 is slidably fitted through the central portion of the handle support shaft 28, and the upper end portion of the rod 33 is engaged with the parking brake button 3, and the intermediate portion is connected to the lower end portion of the traveling frame. The parking lock plate 34 is connected to one end of a parking lock arm 34 that is pin-supported by 9 and a plurality of rack-shaped notches 34a are provided on the other end of the lock arm 34, and is fitted into the notches 34a. 2c is protruded and fixed at the corresponding position of the brake pedal 2.

  A steering sensor 35 such as a potentiometer that operates a steering electromagnetic valve or the like that steers the traveling direction by rotating the circular handle 1 is attached to the lower end portion of the handle support shaft 28. Reference numerals 36 and 37 denote return springs for returning the brake pedal 2 and the parking lock arm 34.

  With such a configuration, when the combine is traveling, the steering sensor 35 is operated by the steering sensor 35 by the rotation of the circular handle 1 to steer in the traveling direction, and the brake pedal 2 is depressed when the traveling is stopped. Apply the travel brake (steering clutch).

  When it is necessary to perform parking brake braking at the time of the operation of the traveling brake, the parking brake button (parking brake operating tool) 3 is pushed through the parking brake rod 33 while the brake pedal 2 is depressed. By applying the parking lock arm 34 and fitting the notch 34a of the parking lock arm 34 into the parking lock plate 2c of the pedal 2, the brake pedal 2 is locked and parking brake braking can be performed.

  Thus, by arranging the parking brake button 3 for performing the parking brake braking operation at the upper surface position of the center portion of the circular handle 1, the operation becomes easy and the parking brake rod 33 is provided at the center portion of the handle support shaft 28. The operation mechanism can be configured compactly by the link mechanism through which is passed.

  Further, when the circular handle 1 has the circular handle 1 as described above, the front side portion of the circular handle 1 is partially cut off as shown in FIGS. At the same time, a protruding grip 38 is provided at an appropriate position on the right side of the center of the handle 1.

  With such a configuration, as shown in FIG. 4, the operator can easily monitor the cutting position of the uncut grain culm by the weed body 17 during the operation, and the handle 1 is not provided by providing the grip 38. Even if it is a circle, it can be operated continuously and with one hand. The grip 38 may be provided with a lift switch 38a of the reaping device 5 so that the operation can be performed in a conventional power steering sense.

  Further, in the case having the circular handle 1 as described above, as shown in FIG. 5a, a main speed change lever that performs forward / reverse switching and main speed change by a hydraulic continuously variable transmission device at the right end side position of the operation console 27. 4 is arranged.

  As shown in FIG. 5b, on the left side (operator side) of the grip 4a provided on the upper end of the long handle of the main transmission lever 4, an up / down fine adjustment button (up / down (Adjustment button) 6, an up button 7 for raising to the highest position, and a lower button 8 for lowering to the lower setting position are sequentially arranged, and a lower position setting button 39 for setting the lower position is arranged on the right side surface thereof. To configure.

  With such a configuration, the circular handle 1 is operated by being gripped with the left hand, the main speed change lever 4 is gripped with the right hand to adjust the vehicle speed, and the lifting / lowering adjustment of the reaping device 5 requiring frequent operation is performed. Since the adjustment buttons 6, 7, and 8 can be operated with the thumb, the operator can reduce anomalous movements such as bending to raise and lower the reaping device 5 in the steering posture with the circular handle 1 held. it can.

  Further, in the case having the circular handle 1 as described above, as shown in FIGS. 6 and 7, the armrest 40 disposed on the right side portion of the operation seat 23 can be rotated upward by the support shaft 40a at the rear end portion. And a main shift lever 4 for switching between forward and reverse and main shift is arranged at the front end portion.

  The grip 4a at the upper end of the main transmission lever 4 is provided with adjusting buttons for adjusting the lifting device 5 up and down, and an operation cable 40b for connecting the main transmission lever 4 to the hydraulic continuously variable transmission is arranged inside the armrest 40. To make it up.

  With such a configuration, the armrest 40 is turned upward to widen the boarding / exiting space, so that the operator can easily get on and off, and at the time of work, the armrest 40 is returned to the normal position so that the driving operation and adjustment by the main transmission lever 4 The raising / lowering operation of the cutting device 5 by buttons can be easily performed.

  Further, as shown in FIGS. 6 and 7, when the circular handle 1 and the armrest 40 that can be rotated upward are provided on the operation seat 23, this turning operation is performed when the armrest 40 is rotated upward. When the operator gets out of the operation seat 23, the armrest 40 must be rotated upward by connecting the vehicle brake so that braking by the parking brake is possible. Acting, the movement of the vehicle body 26 can be locked, and safety is high.

  Further, as shown in FIGS. 6 and 7, when the circular handle 1 and the armrest 40 that can be rotated upward are provided on the operation seat 23, this turning operation is performed when the armrest 40 is rotated upward. Since the lifting / lowering stop switch 41 for stopping the lifting / lowering action of the reaping device 5 is provided at an appropriate position for connection, the armrest 40 must be rotated upward whenever the operator gets out of the operation seat 23. The raising / lowering stop switch 41 operates in conjunction with the turning operation, and the reaping device 5 can be stopped, which is highly safe.

  Moreover, about the said traveling apparatus 11, since the left and right sides are the same shape in planar view, only one side is demonstrated. As shown in FIG. 8, left and right vertical main frames 42 are arranged and joined to the left and right positions near the center in the vertical direction in the plan view of the traveling frame 9, and a support frame 43 is provided at the front lower portion of the vertical main frame 42. The front rolling metal 44 is fixed and configured.

  A rectangular front rolling arm 45 is divided into an upper and lower portion from the middle position on the rolling metal 44 and is pivotally supported by a front rolling shaft 46, and a lower end position of the front rolling arm 45, A pin 45a is pivotally connected to the front side position of the wheel frame 47 located in parallel with the outer lower side of the main frame 42.

  A pitching shaft 49 is supported by a pitching metal 48 fixed to the rear lower portion of the vertical main frame 42, and one end portion of the pitching arm 50 is fixed to the pitching shaft 49, and the other end portion is H-shaped in plan view. A pin 51a is rotatably connected to one end of the connecting arm 51.

  At the other end of the connecting arm 51, a rectangular rear rolling arm 52 is divided from the middle position into upper and lower parts and pivotally supported by the rear rolling shaft 53, and the lower end position of the rear rolling arm 52, A pin 52a is connected to the rear side position of the wheel frame 47 so as to be rotatable.

  A substantially vertical posture in which the fixed side is attached to the cylinder mounting arm 54 raised from the one vertical main frame 42 to the protrusion 50a slightly extended from the connecting portion of the connecting arm 51 on the other end side of the one pitching arm 50. The piston tip of the pitching cylinder 55 is connected and configured.

  The upper end position of the front rolling arm 45 and the upper middle position of the rear rolling arm 52 are connected to pins 45b and 52b by a connecting rod 56 so as to be able to form a four-point parallel link, and to the rear rolling arm 52. Is extended further upward than the connecting position of the pin 52b, and the piston tip of the rolling cylinder 57 is connected to the upper end thereof.

  The fixed side of the rolling cylinder 57 and a part of the protruding portion 50a of the pitching arm 50 are respectively pin-coupled so as to be able to rotate while being sandwiched from both sides by a belt-like holding plate 58, and the fixed-side connecting portion is linked. A vertical main frame 42 is swingably mounted via 59. Reference numeral 60 denotes a grounding wheel that is pivotally supported on the wheel frame 47 at an appropriate interval.

  With such a configuration, when the pitching cylinder 55 is operated, it is possible to perform pitching control in which the wheel frame 47 is tilted rearward by the upper and lower of the rear rolling arm 52 via the connecting arm 51, and the rolling cylinder 57 is When operated, the rolling control for moving the wheel frame 47 in parallel up and down by the parallel link action by the rear rolling arm 52 and the connecting rod 56 via the front rolling arm 45 and the connecting arm 51 can be performed.

  However, in the case of performing only rolling control, the pitching metal 48, the pitching shaft 49, the pitching arm 50, the cylinder mounting arm 54, the pitching cylinder 55, the holding plate 58, etc. (shaded portions in the figure) are not necessary. An arm support metal 61 that supports one end of the cylinder and a cylinder support metal 62 that supports the rolling cylinder 57 (shaded portions in the figure) can be attached to the vertical main frame 42 for exclusive rolling.

  As described above, the specifications of the pitching control and the rolling control can be easily changed and shared, and the rear rolling metal 44a and the support frame 43 of the front rolling metal 44 can be used as in the conventional machine shown in FIG. Since it is not necessary to provide the support frame 43a, the rear fulcrum portion of the rolling does not have a large side shape (the hatched portion in the figure), the mud in the right and left direction is improved, the turning performance is improved, and the car wash is also performed. Easy.

  Further, as shown in FIG. 10, a controller 63 for controlling the pitching and rolling functions by providing a central CPU is provided. On the input side of the controller 63, a vehicle speed sensor 64 for detecting the vehicle speed, and a left / right tilt of the power steering lever are provided. A turning switch 65 for turning on / off the turning action of the vehicle body 26 by an operation and a raising / lowering switch 66 for turning on / off the raising / lowering action of the reaping device 5 by a tilting operation of the power steering lever are connected to each other.

  A pitching electromagnetic valve 67 for operating the pitching cylinder 55 and left and right rolling electromagnetic valves 68 for operating the left and right rolling cylinders 57 are connected to the output side of the controller 63, respectively.

  With such a configuration, when turning at a certain speed or higher, the control that automatically stops the left and right rolling functions for a certain time thereafter, and when a vehicle speed difference of a predetermined value or more occurs within a certain time, A control for automatically stopping the pitching function for a certain period of time, and a control for automatically stopping the pitching function for a certain period of time after the adjustment of the telescopic cylinder 21 causes an adjustment displacement of a predetermined value or more within a certain period of time. To do.

  By performing these controls, it is possible to automatically recognize the occurrence of a factor that causes the horizontal control of the vehicle body 26 to malfunction, and to prevent malfunction by temporarily stopping the horizontal control function.

  Further, as shown in FIG. 11, a controller 69 is provided in which a CPU is mainly arranged and the left and right traveling brake braking means 69a are built in when the vehicle body 26 is tilted back and forth. The parking brake switch 70 for detecting the vehicle and the front / rear inclination position sensor 71 for detecting the front / rear inclination of the vehicle body 26 are connected to each other.

  On the output side of the controller 69, left and right steering clutch solenoid valves 72 for turning on and off the left and right steering clutches built in the traveling mission case 31, and left and right traveling brakes for braking the left and right traveling brakes. A pressure reducing valve 73 is connected to each other.

  With such a configuration, the driving brake can be electrically quickly braked by turning on the parking brake switch 70 when the parking brake is braked on an inclined ground where the vehicle body 26 naturally descends. When the parking brake cannot be operated quickly, the left and right steering clutches are in the disengaged state, eliminating the problem that the vehicle body 26 naturally descends before the traveling brake is braked, and highly safe parking even on sloping ground Brake braking can be performed.

  In addition, as shown in FIGS. 12a and 12b, a side mirror 75 is attached to the inlet portion of the threshing chamber 74 in which the handling cylinder 74a of the threshing device 15 is installed, and in the past, monitoring during the threshing operation of the combine, The mirror 75 is generally rotated from the normal working position a to the rear handling work position b so that it does not get in the way during handling operations. Since it protrudes in the direction, it may become a hindrance and breakage during transportation and storage.

  For this reason, as shown in FIG. 13, the mirror support cylinder 75a that rotatably supports the side mirror 75 is fixed to a U-shaped mounting arm 75b fixed to the front end portion of the sandwiching rod cover 74b of the threshing device 15. A plurality of dividing grooves 75c are provided on the circumference of the upper end portion of the mirror support cylinder 75a, and a positioning pin 75d fitted into the dividing groove 75c is fixed to the crank-shaped mirror support shaft 75f that supports the mirror body 75e. A spring 75g for tensioning the mirror support shaft 75f in the axial direction is provided at the shaft end.

  With such a configuration, the rotation position of the side mirror 75 is locked at the normal work position a during normal combine work, and the mirror support shaft 75f is lifted against the spring 75g during hand handling work to lift the positioning pin 75d. It is moved by the dividing groove 75c and locked to the hand handling work position b. Next, when the combine is transported and stored at the end of the work, the mirror 75 can be locked to the storage position c in which it is stored within the width of the vehicle body 26.

  In this way, the rotational position of the side mirror 75 can be easily locked to the optimal position according to the state at that time, so that it becomes an obstacle during work, requires extra space during storage, It is possible to prevent obstacles such as being caught on a tree during transportation on board.

1 circular handle 4 main transmission lever 4a grip part 5 working part 6 vertical fine adjustment button (vertical adjustment button)
7 Raise button 8 Lower button

Claims (1)

A circular handle (1) that steers in the traveling direction, and a main transmission lever (4) that is disposed on one side of the circular handle (1) and performs forward / reverse switching and main shift of the traveling speed. A vertical adjustment button (6) for adjusting the raising and lowering of the working part (5) on the operator side surface of the grip part (4a) provided at the upper end of the main transmission lever (4), and the working part (5) A working vehicle operating device comprising a lowering button (8) for lowering to a set position and a raising button (7) for raising.

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