JPH05278574A - Body uplifter in mobile service car - Google Patents

Abstract

PURPOSE:To lift up the front side of a car by means of a stand and simultaneously in relation to this motion, jack up the rear side of the car body up to the peoper position by a jack automatically. CONSTITUTION:A stand 8, rising due to a machine body traveling motion and uplifting a machine body traveling direction front part and a jack 11 uplifting a machine body traveling direction rear part loath are installed in an interspace between a car body 2 equipped with a travel crawler 1 and the ground, and a detector 12 detecting a stand-up stable attitude of the stand is installed between the stand 8 and the car body, while a means for stopping the machine body traveling motion and another means for jacking up the machine body traveling direction rear part automatically both are relatively operated the basis of the detected result by this detector.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle body lifting device for a mobile work vehicle equipped with a traveling crawler and is applied to a combine or the like.

[0002]

2. Description of the Related Art Conventionally, a technique has been proposed in which a front part of a vehicle body is lifted up to the ground by a stand (a ground support member capable of standing up by rocking) and a rear part is lifted up by a jack.

[0003]

Since the lift-up by this type of jack is manual, the operation is troublesome and the work efficiency is lowered. The present invention is intended to solve such a problem. In short, the front side of the vehicle body is lifted up by the stand, but at the same time, the rear side of the vehicle body is automatically jacked up to an appropriate position. There is To achieve this object, the present invention takes the following technical means.

[0004]

That is, the technical means according to the present invention is to stand between a vehicle body 2 having a traveling crawler 1 and the ground due to a traveling operation of the vehicle body and to have a front portion in the vehicle body traveling direction. A stand 8 for raising and a jack 11 for raising a rear portion of the machine body traveling direction are provided, and a detecting device 12 for detecting a standing and stable posture of the stand is provided between the stand 8 and the vehicle body, and based on a detection result by the detecting device. It is characterized in that the means for stopping the traveling operation of the machine body and the means for automatically jacking up the rear part of the machine body traveling direction are configured to be associated with each other.

[0005]

When the vehicle body is lifted, the lower end of the stand 8 is in contact with the ground in an inclined posture, and the traveling crawler 1 is driven by the operation of the traveling operation lever 5 to advance the machine body. The front side of the vehicle body is lifted upward by bulging the ground to stand up and crossing the fulcrum to maintain a stable standing posture.

When the standing and stable posture of the stand 8 is maintained, the detection device 12 is activated at this point,
When the engine or the traveling clutch is disengaged, the traveling operation of the aircraft is stopped. Simultaneously with the stop of the operation of advancing the machine, a motor switch for driving the jack 11 in conjunction therewith is turned on, and the rear part of the machine is automatically jacked up to an appropriate height position by the drive rotation of the motor M. Will be.

[0007]

As described above, according to the present invention, when the vehicle body is lifted, the rear side of the vehicle body can be automatically jacked up at the same time when the front side of the vehicle body is lifted. The lift-up work of the vehicle body can be efficiently performed, and troubles such as damage to the stand or jack due to an erroneous operation can be prevented.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The figure shows an example of a combine, in which a threshing section 3 is mounted on a vehicle body 2 equipped with a traveling crawler 1, and a mowing section 4 is equipped in the front. An engine is mounted on one side of the reaping section, a driver's seat is located above the engine, and an operation lever (H / S / T lever) 5 that controls the forward / backward movement of the aircraft near this driver's seat. An operation box 6 having the above items is installed.

At the front of the vehicle body 2, there is provided a stand 8 which can be raised and lowered around a support shaft 7. The stand 8 is constituted by a stand arm 9 and a grounding stability holding member 10 so as to be substantially L-shaped in a side view. And this stand
The lower end of the frame 9 is touched to the ground in an inclined posture, and then the traveling crawler is driven to advance the machine body, and the stand 8 pushes the ground and stands up around the support shaft 7 to lift the vehicle body. Is configured.

A jack 11 which can be moved up and down is installed as a rear ground support member at the rear portion of the vehicle body in the central portion in the vehicle width direction. Therefore, the entire mobile work vehicle can be lifted by the three-point support of the left and right stands 8 and the rear jack 11 in the front part of the vehicle body. The stand 8 is provided between the stand 8 and the vehicle body 2.
Detection switch 1 that stops the engine by detecting the stable standing posture when the stable standing posture is maintained beyond the fulcrum
2 is provided, and when this detection switch is turned on, the engine is stopped through an electric circuit as shown in FIG. 5, and at the same time, the motor switch of the jack 11 is turned on and the motor M is driven. , Jack up to the proper height. Reference numeral 13 denotes a jack displacement angle detection switch, which detects that the jack 11 has risen to a predetermined position and stops driving the motor M.

[0011]

[Embodiment] If the stand 8 is provided with a standing stabilizing plate 14 as shown in FIG. 6, it is possible to more effectively maintain the standing stability on soft ground. In other words, the stand is
Since the bottom of the concrete surface is hard, the machine is stable when the stand is erected, but when it is erected on a farm road or in the field, the bottom is soft and lacks stability. In such a case, the upright stabilizing plate 14 is pressed downward from the lower surface of the grounding stable holding member 10 so as to be changed from the stand (a) state to the stand (b) state and fixed by the lock pins 15, 15. .. Then, the stand 8 at the time of standing up is
Will be in a state of digging into the ground as shown in the stand (C) and will be stable.

Further, in the embodiment shown in FIGS. 7 to 9, the shape of the stand 8 can be changed from the L-shape in side view to the T-shape. That is, when the stand is L-shaped, the stability is poor after the vehicle body is lifted up (state of FIG. 7). In particular,
When a force was applied to push the machine rearward from the reaping section, the jack sometimes fell rearward and the jack was also deformed. In addition, when the ground was not flat due to farm roads, etc., it often fell backwards. Therefore, in such a case, the ground stable holding member 10 of the stand 8 is
8 is configured as 10a and 10b as shown in FIG. 8, and the grounding stability holding member 10b on one side is transferred to the rear side so as to be T-shaped in side view as shown in FIG. It can be supported and has very good stability. In addition, 16 is a fulcrum pin and 17 is a positioning pin.

In the embodiment shown in FIG. 10, the support shaft 7 of the stand 8 is formed as a bearing so as to be rotatable about the axis of a traveling frame pipe 18 which is horizontally installed. The support shaft 7 is divided into two parts at the intermediate part, and the shaft parts 7a and 7b are provided on opposite sides of the support shaft 7 so as to rotate in conjunction with each other. -M9,9
Are configured to swing integrally. Moreover, the left and right stand arms 9 and 9 are constructed so that they can be slid together with the support shaft 7 in the left and right lateral width directions with respect to the traveling frame pipe 18, and the support shaft 7 is provided at an appropriate position in the middle thereof. A grease groove 19 (a grease holding groove for grease-up to the frame pipe 18) is provided as a mark of the stand slide adjustment width. In other words, the stand is slid outwardly at the time of exchanging the rollers, but at this time, it is slid to the position where the grease groove 19 of the support shaft 7 is aligned with the outer end portion 18a of the frame pipe 18. It is sufficient to obtain an appropriate movement adjustment width of the stand.

Even after the slide adjustment of the stand arm 9 as described above, the left and right stand arms 9 and 9 are always swung integrally, for example, a spline shaft as shown in FIG. 7a and the spline fitting hole 7b. The jack 11 shown in FIG. 12 is configured to be stored at a position where it is not affected by the cutting straw by the cutter-working machine 20 installed at the rear part of the threshing section. For example, as shown in FIG. 13, it is preferable that a middle portion of the rear lateral frame 21 be cut out, and that the jack 11 be housed in the notched space portion 22.

The jack 11 shown in FIGS. 14 and 15 constitutes a pantograph type jack including a grounding tool 11a, a diamond-shaped link mechanism 11b, a screw rod 11c and the like. A handle 23 is interlockingly connected to the screw rod 11c via a universal joint 24, and when the screw rod 11c is rotated by operating the handle 23, the grounding tool 11a moves up and down. It has become. A gauge 2 for instructing a proper jack-up position on the jack 11.
5 is provided, and the proper position display name 2 is provided on the aircraft side.
6 is provided. Therefore, the operator may turn the handle 23 while looking at the gauge 25 until the gauge reaches the position of the name 26 which indicates the proper jack-up position.

In the embodiment shown in FIGS. 16 and 17, the jack 11 is stored in the upper position so as to maintain the minimum ground height H (FIG. 16), and the jack-up work position in which the jack 11 is lowered downward to near the ground. The state (FIG. 17) can be switched and changed with one touch. That is, the support member 27 of the jack 11 is vertically slidably inserted into the storage holding frame 28 provided on the vehicle body side and fixed by the pin 29. Therefore, when jacking up the rear side of the vehicle body, it is sufficient to remove the pin 29 from the stored state shown in FIG. 16 and lower it all the way to the state position shown in FIG. 17 at once, and then turn the handle to jack up. The number of times is small and it is efficient.

[Brief description of drawings]

FIG. 1 is a side view of a main part of a combine.

FIG. 2 is a rear view of the main part of the combine.

FIG. 3 is a side view of the main part of the combine.

FIG. 4 is a rear view of the main part of the combine.

FIG. 5 shows an electric circuit diagram.

FIG. 6 is a side view of the stands (a), (b), and (c), and a rear view of the stand (d).

FIG. 7 is a side view of the main part of the combine.

FIG. 8 shows a perspective view of a main part of a stand.

FIG. 9 is a perspective view of a main part of the stand.

FIG. 10 is a cutaway rear view of the main part of the combine.

FIG. 11 is a cutaway rear view of the main part of the combine.

FIG. 12 is a partially cutaway side view of a main part of the combine.

FIG. 13 is a perspective view of a part of the combine.

FIG. 14 is a rear view of the main part of the combine.

FIG. 15 is a side view of the main part of the combine.

FIG. 16 is a side view of the main part of the combine.

FIG. 17 is a side view of the main part of the combine.

[Explanation of symbols]

 1 Running Crawler 2 Vehicle Body 3 Threshing Section 4 Mowing Section 5 Operation Lever 6 Operation Box 7 Support Shaft 8 Stand 9 Stand Arm 10 Ground Stability Holding Member 11 Jack 12 Detection Device M Motor

Claims (1)

[Claims] 1. A stand (8) standing up between a vehicle body (2) equipped with a traveling crawler (1) and the ground to raise a front portion of a body traveling direction and a jack (11) raising a rear portion of the body traveling direction. A detection device 12 for detecting the standing stable posture of the stand is provided between the stand 8 and the vehicle body, and means for stopping the traveling operation of the vehicle body based on the detection result of this detection device and a rear portion of the vehicle body traveling direction are automatically provided. 1. A body lifting device for a mobile work vehicle, characterized in that it is configured so as to be associated with a means for physically jacking up.