JPS5810405Y2 - Vertical position adjustment device for rear grounding body in mobile work equipment - Google Patents

Description

[Detailed description of the invention] The present invention is suitable for mobile work that is equipped with a ground work device that has a considerable weight, such as a ridge cutter used as a preliminary work device for shaping ridges in a field. adjusting the ground working height of the heavy ground working device;
In addition, when the machine turns or moves from a field to a farm road, the ground work equipment can be raised significantly above the ground, or lowered from a raised position to a work position on the ground. This invention relates to a device for adjusting the vertical position of a rear ground contact body, such as a tail beam, provided on the rear frame of the ground work device, so that the work can be carried out easily in the ground work device.

As mentioned above, a typical vertical position adjustment device that has been used in the past for finely adjusting the vertical position of a ground work device as well as finely raising and lowering it is a screw type telescopic device with a grounding body attached to the lower end. It is known that the entire support is attached to the machine frame so that it can slide up and down and be fixed.

In this case, in order to prevent the entire telescopic column from sliding unexpectedly due to the ground reaction force equivalent to the weight of the aircraft due to the grounding body during normal work, it must be extremely firmly tightened to the machine frame using cams, etc. Due to the relationship between the Not only does this require a great deal of operational effort during adjustment, but it also has the disadvantage that the work lacks speed.

The present invention has been developed in view of the above circumstances, and uses a rotating operation arm for fine adjustment as one of the structural members for adjusting the elevation by sliding the entire screw type telescopic column up and down. The purpose of this invention is to reduce the operating force and speed up the work, especially when making large adjustments.

The device for adjusting the vertical position of the rear grounding body attached to a mobile work equipment according to the present invention allows the entire screw type telescopic column with the grounding body attached to the lower end to be slid up and down on the rear machine frame of the ground work equipment and rotated around the vertical axis. A rotary operation arm for extending and contracting the telescopic pillar is connected to a member which is movably supported and fitted to the upper pillar part of the telescopic pillar so as to be able to change and fix the vertical position thereof, and a rotating operation arm for extending and contracting the telescopic pillar, and The present invention is characterized in that a hook-shaped locking device that can be engaged with and disengaged from the rotation operating arm is attached to a ring-shaped member that is fitted and held so as to be rotatable only.

That is, according to the present invention, the working height of the ground work device can be finely adjusted by expanding and contracting the screw-type telescoping strut, and by sliding the entire telescopic strut up and down with respect to the machine frame, It is possible to perform large lifting and lowering adjustments of the ground work equipment necessary when turning the aircraft, and
Any adjustment can be made easily and comfortably with the weight of the work equipment being borne on the ground, but especially when using the present invention, the expansion and contraction required to enable large lifting adjustments as mentioned above is possible. As a structure for fixing and releasing the position of the frame portion of the column, the rotary operation arm for the telescopic operation of the screw type telescopic column is effectively used, and a hook-shaped structure that can be freely engaged and detached from the rotary operation arm is used. By providing the locking tool, the locking/unlocking button and locking operation between the telescopic strut and the machine frame part, which are necessary for large lifting/lowering adjustments, can be made into a simple locking/unlocking operation.

Therefore, compared to the fixed type, conventional tightening not only reduces the operating force but also speeds up the work. By shortening the time required for the necessary lifting and lowering adjustments, it has also been effective in improving overall work efficiency.

Hereinafter, embodiments of the present invention will be described based on the drawings.

The drawing shows a walking type ridge cutting and ridge coating machine, which includes a pair of left and right running wheels 10, 10, a steering handle 11 extending rearward, an engine 12, and a frame 13 protruding rearward.
For installation, the ridge working device 3 (an example of a ground working device) is attached to the frame 13 of the machine 16, which is constructed by assembling the utility hitch 14 to the traveling mission case 15, and the traveling A turret-shaped grounding body 1 that stabilizes the longitudinal posture of the aircraft body with the wheels 10 and 10 is attached via the support 2, and the vertical position of the grounding body 1 with respect to the aircraft body is adjusted, and the frame 13 is moved up and down around the axle. It is constructed by providing a device that adjusts the working height of the above-mentioned work device 30 above the ground by swinging, and a mechanism that stabilizes the straightness of the machine body.

The ridge working device 3 is arranged horizontally with respect to the center position of the width of the machine body.
At the lower end of the transmission case 17, which is attached to the frame 13 so as to be able to swing left and right around the longitudinal axis X and to be fixed at a location where it is displaced laterally, the transmission case 17 is attached to the lower end of the transmission case 17, which is attached to the frame 13 so as to be able to swing left and right around the longitudinal axis X and to be fixed. By driving and rotating, the side surface a of the ridge A
By cutting and driving and rotating around the longitudinal axis 7 while positioned at the center of the width of the machine, the mud is splashed toward the ridge A side in cooperation with the cover 18 positioned along the outer periphery. A leveling device 20 is disposed at the rear of the rotary blade body 19 for leveling the mud supplied to the ridge A. be.

This leveling device 20 has a side surface leveling plate 21 that acts on the side surface a of the ridge A, and an upper surface leveling plate 22 that acts on the upper surface of the ridge A.

The cover 18 has a front half made up of a perforated fixed plate 23 to dewater the mud, and a rear half made up of a movable plate 24 that can be vertically swung and fixed. , and is configured to adjust the direction in which mud is thrown away.

Incidentally, the swinging fixing mechanism of the movable plate 24 is a turnbuckle 25.
It is composed of:

The vertical position adjustment device for the grounding body 1 is configured such that the support column 2 can be vertically expanded and contracted in a screw type manner, and that the support column 2 is
a cylindrical machine frame portion 4 connected to the rear of the frame 13;
A member 6 that restricts the downward sliding of the column 2 is inserted into the upper column of the column 2 so as to be able to slide up and down and rotate around the vertical axis and come into contact with the upper end of the machine frame section 4. 5 is fitted to the fitting member 6 so as to be freely changeable in its vertical position and in a non-rotatable state, and a rotation operation arm I is connected to this fitting member 6. A guide 26 is provided to prevent the lower support portion 5' from rotating while allowing the support portion 5' to slide vertically with respect to the machine frame portion 4, so that the upper end portion of the machine frame portion 4 can freely rotate only around the vertical axis. By engaging the ring-shaped member 8 held externally with the rotary operation arm 7, the upper support portion 5 is prevented from sliding upward with respect to the machine frame portion 4, and by releasing the engagement. It is constructed by attaching a hook-like locking device 9 that allows the upper support portion 5 to slide upward.

In order to attach the fitting member 6 to the upper support portion 5, both 6 and 5 are formed with different diameters to prevent rotation, and a plurality of fitting members 6 and 5 are attached to the upper support support portion 5 along the sliding direction. The engagement holes 27... are formed, and the insertion/extraction pins 28 are selectively engageable and detachable from the engagement holes 27...
The structure is such that the fixing device for the fitting member 6 can be changed in stages.

The ring-shaped member 8 is attached to the machine frame part 4 by forming a circumferential groove 29 on the outer peripheral surface of the machine frame part 4, and by using bolts 30 that engage the ring-shaped member 8 in the circumferential groove 29 in the sliding direction. Install and configure.

A stopper 31 is attached to the upper end of the upper support portion 5 to prevent the fitting member 6 from coming off.

The mechanism for stabilizing the straightness of the aircraft is the machine frame portion 4.
is attached to the frame 13 so as to be able to swing left and right around the longitudinal axis 2, and between the machine frame portion 4 and the frame 13, the swinging posture of the support 2, that is, the width direction position of the grounding body 1 with respect to the machine body is fixed. Tighten the fixable long hole 32 and set bolt 3
3, thereby generating a movement resistance on the lateral side of the machine body that is approximately equal to the movement resistance that is generated on one side of the machine body and causes the machine body to meander in one side,
It is designed to suppress meandering of the aircraft.

Next, to explain how to adjust the grounding body 1 up and down, fine adjustments are made by rotating the arm 7 and expanding and contracting the support 2, and large adjustments when turning etc. are made using the hook-shaped locking mechanism. The tool 9 is removed from the arm I, and then the fitting member 6 is removed.
After sliding, the hook-shaped locking device 9 is engaged with the arm T.

The pin 28 for fixing the fitting member 6 to the upper support portion 5 may be provided with elastic bias in the direction of engagement, or may be engaged in conjunction with the engagement/disengagement operation of the hook-shaped retainer 9. It may be configured to engage and disengage from the matching hole 27.

Furthermore, the sliding position of the fitting member 6 may be changed steplessly.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the apparatus for adjusting the vertical position of the rear grounding body in a mobile work machine according to the present invention, in which FIG. 1 is an overall side view of the work machine, FIG. 2 is an overall rear view of the work machine, and FIG. The figure is a partially cutaway rear view of the main part. 1... Grounding body, 2... Telescopic support, 3.
... Ground work device, 4 ... Rear machine frame part, 5 ... Upper strut part, 6 ... Members,
γ...Rotating operation arm, 8...Ring-shaped member, 9...Hook-shaped locking tool.

Claims (1)

[Scope of utility model registration request] The entire crane-type telescopic strut 2 with the grounding body 1 attached to its lower end is supported by the rear machine frame portion 4 of the ground work device 3 so that it can slide vertically and rotate around the vertical axis, and the upper strut portion of the telescopic strut 2 A rotating operating arm 7 for extending and contracting the telescopic support 2 is connected to a member 6 which is fitted to the member 5 so that the vertical position can be changed and fixed, and the arm 7 is fitted to the machine frame portion 4 so that it can only rotate freely. A device for adjusting the vertical position of a rear grounding body in a mobile work machine, characterized in that a hook-shaped locking device 9 that can be freely engaged with and detached from the rotation operation arm 7 is temporarily attached to the ring-shaped member 8 that has been rotated. .