JP2527909Y2 - Frame folding device in cultivator - Google Patents

Description

[Detailed description of the invention]

[Industrial application field] This invention relates to a frame folding device in a cultivator. [Technical background] To increase the working width of the cultivator in order to improve its operation effect, the length of the frame provided in the direction perpendicular to the working direction is increased, and the cultivator is equipped with a claw, a gauge wheel, etc. It has a configuration in which many of the plurality of bone beams are arranged in parallel. In a field, the larger the work width, the greater the workability and the ability to expand the work power within the capability range. General roads are forced to proceed. As we all know,
General roads must comply with the prescribed Road Traffic Law, but at least the vehicle width in the Road Traffic Law (hereinafter referred to as the Road Traffic Law) must be such that a protruding part larger than the specified width can be folded inward to enable safe driving. It has been proposed to. Also, besides the application of the vehicle width regulations in the above road traffic law,
In a field, when the work is performed with a small width, the work may be performed with the above-mentioned state folded. [Prior Art] At least in terms of vehicle width, in accordance with the provisions of the Road Traffic Law for traffic on general roads, and in order to ensure safety, a form in which a portion protruding from the prescribed vehicle width is folded inward by a hinge is adopted. I have. The formation is performed by rotating the frame of the protruding part vertically by 180 degrees, and by rotating the claw and other mounting equipment mounted on the folding frame via the bone beam so that the other mounting equipment is directed to the heavens. It was what was.

[Problems to be solved by the invention]

As described above, conventionally, a portion protruding from a predetermined vehicle width is connected via a hinge, and the turning operation of the heavy divided sub-frame is manually performed, and the turning of the protruding portion is performed horizontally. The turning operation from the position to the vertical position requires a large amount of kinetic force and is heavy labor, but rather, when turning from the turned vertical standing form to the horizontal position in the opposite direction again, the above-mentioned standing operation is performed. Although the required exercise force is not required, if the support means is stopped and released naturally, it will fall down by its own weight, but it is expected that destruction due to this will naturally be expected, so prevent natural fall-over In this sense, the lower frame gently rotates downward while supporting the rotating sub-frame. Since the downward rotation is accompanied by an acceleration phenomenon, the risk increases with the supporting operation, and the work requires a great deal of labor and a high degree of caution. This invention eliminates the danger of heavy labor and danger associated with the operation of folding the sub-frame, which is performed manually.
An object of the present invention is to provide a structure capable of facilitating an operation of contracting to a vehicle width according to a prescribed rule in order to comply with the prescribed rule. In particular, the present invention turns the sub-frame, which is folded within the desired vehicle width, so that its tip makes a substantially oblique rotation toward a substantially middle direction between the horizontal direction and the vertical direction, and ends the rotation near the highest position. This eliminates the phenomenon of acceleration when lowering again after the previous rotation to the highest position, reducing the labor required for folding and eliminating the danger associated with this work.

[Means for Solving the Problems]

According to the present invention, as a means for achieving the above-mentioned object, a plurality of bone beams each having a claw and a gauge wheel are connected to a channel beam (12) fixed to a frame via a link and a coil spring, respectively. The frame of the set length in the cultivator to be mounted side by side is divided into a main frame having a width and two sub-frames, and the main frame is provided at both ends of the main frame and at one end of each sub-frame. Connected via a hinge having a line corresponding to the axis obliquely to the axis as a rotation axis, each of the sub-frames can perform oblique rotation with respect to the main frame, and the rotation angle is around 90 degrees, The claw of the bone beam and the tip of the gauge wheel to be mounted on the sub-frame are configured to fall within the range of the width in plan view. In addition, in the hinges connected to both ends of the main frame and one end of each sub-frame, the axis of the main frame and the rotation axis of the hinge and all of the extending directions thereof, through a certain distance, and do not connect intersections. It consists of Further, in the hinge for rotatably connecting the main frame and the sub-frame, when the hinges forming the hinge are joined to each other, the hinge is inclined with respect to the plane of the hinge at a position at a certain distance from the rotation axis. The main frame and the sub-frame are fixed to each other so as to become the axis of the main frame and the sub-frame. Still further, in the hinge for rotatably connecting the main frame and the sub-frame, when the axis of the sub-frame is on an extension of the axis of the main frame, and when the sub-frame is at the effective rotation limit position with respect to the main frame. It is provided with state maintaining means capable of maintaining the rotated state. Further, in addition to the hinge used as a rotatable connecting means between the main frame and the sub-frame, a damper which assists in the turning motion and the extension direction is rotatable on the main frame and the sub-frame. It is constructed by pivotally connecting. [Action] In a cultivator, the length of a frame for mounting a plurality of bone beams for mounting a claw, a gauge wheel, a crushed soil disk, and the like is generally configured to be longer than a vehicle width determined by the Road Traffic Law, and However, while working to improve work efficiency, this means that in order to comply with the prescribed vehicle width when passing on general roads, the desired set length protruding from the prescribed vehicle width is divided and connected with a hinge. When passing through a general road or working on a small number of ridges in a field or the like, the sub-frame mounted via the hinge is folded so as to be operated so as to fit within a prescribed vehicle width. In other words, the present invention turns the sub-frame, which is folded within the desired vehicle width dimension, so that its tip makes a substantially oblique rotation toward the substantially middle direction between the horizontal direction and the upper vertical direction, and turns around the highest position. This is to eliminate the work of supporting the phenomenon of acceleration that occurs when the vehicle is lowered again after turning to the highest position, thereby reducing the labor required for folding and eliminating the danger associated with this work. A hinge connecting an end of the main frame and an inner end of the sub-frame at a portion protruding from a dimension to form the specified vehicle width so as to fit within the specified vehicle width;
By setting the rotation axis of the hinge with respect to the axis of the main frame at the fixed position, the extension direction and the parallel position, or the position excluding the direction orthogonal to the axis, and the rotation axis that does not connect the intersection, The purpose of the present invention is achieved. A rotation axis of the hinge is not located on a plane parallel to the axis of the main frame, and is inclined with respect to the axis of the main frame, and a rotation axis that does not connect an intersection with the axis is determined for the hinge. Therefore, it is assumed that the axis of rotation of the hinge, or an extension thereof, is the longitudinal axis, and, starting with the sub-frame, the claw to be attached to the midbone beam attached to the sub-frame, the tip of the gauge wheel is A circle drawn as a radius (R) from the vertical axis with the distance from the sub-frame to the tip having the largest dimension pivots the action position reaching a specified vehicle width range centered on the center position of the main frame. Looking at the rotation form of the sub-frame and its trajectory,
The rotation degree of the cultivator in the plan view sub-frame is about 90 degrees with respect to the main frame, and is located at an intermediate position between the horizontal position and the vertical direction with respect to the cultivator side view main frame, and the sub-frame The end directing line is obliquely upward.
In this state, each device on which the bone beam is mounted faces the inside of the vehicle width range in plan view. Therefore, the work of folding the sub-frame and its mounting equipment within the prescribed vehicle width requires a rotation angle of about 90 degrees or more with respect to the fixed main frame, and a rising angle of about 45 degrees.
Degrees or more. Further, as described above, the bone beam on which the gauge wheel, the claw, and the like are mounted is mounted via a link and a coil spring to a channel beam fixed to the frame side as a joining means between the main frame and the sub-frame. Therefore, as a form in which the rotating action reaches the end, the entire load of the mid-bone bee beam is released from the hanging load action on the sub-frame, and the original contracting action of the coil spring works, and accordingly, The intervening link is folded, and finally the distance between the tip of the gauge wheel and the claw and the sub-frame is in the shortest state, and therefore, the gauge located at the outermost position in the mid-bone beam structure. The tips of the protruding devices such as the wheel and the claw are designed to fit within the set width dimension (l). [Embodiment] Next, an embodiment of this invention will be described with reference to the drawings.
A cultivator (A) towed by a tractor has a channel beam (12) fixed to a frame provided in a direction perpendicular to the traveling direction, and a cultivator (A) such as a claw (1) and a gage wheel (2). )), The required number of sets of medial beams (3) equipped with the necessary equipment are attached in parallel, and each of the medial beams (3) has
Links (1) each of which has a parallelogram link action with the channel beam (12) fixed to the frame.
0) and a frame which is mounted with a coil spring (11) interposed therebetween so as to maintain the equilibrium state of the intermediate beam (3) with the field scene, and in which a plurality of intermediate beams (3) are thus mounted. Is designed to have a desired width dimension. In the general cultivator (A) including the present invention, the channel beam (12) and the midbone beam (3) fixed to the frame side of the frame as shown in the drawing act as a parallelogram link. The cultivator (A) is swingably connected via a link (10) so that
Has suspended the entire weight of the cultivator (A) in the channel beam (12) on the frame side in order to balance the action of the suspended load so that proper operation can be performed in accordance with the start of the field scene. The contraction type coil spring (11) is engaged with the other end thereof to interpose the intermediate bone beam (3) so as to pull up the bone beam (3). However, when the vehicle travels on a general road outside the field, in order to comply with at least the vehicle width regulations stipulated by the General Road Traffic Law, the constituent dimensions must be matched to the standards in accordance with the regulations. In the cultivator (A) frame, a portion projecting from a width dimension (l) of a set length from the center of the length is cut obliquely so as to obtain a specified vehicle width. 6), the cut end of the main frame (4) and the cut inner end of the sub-frame (6) are connected by a hinge (5). The hinge (5) is pivotally connected with an axis (71) on each side of the two hinges (7), (7). The hinges (7) and (7) are provided with fixing and maintaining means (8) and (8), respectively, so that the hinges (7) and (7) are required to be the highest around the shaft (71). Locking retaining holes (8
1), the latching rod (82) provided with (81) is inserted and engaged to maintain the hinges (7) and (7) in an open state. Further, both mounting portions are pivotally connected between one side of the hinge portion (7) on the main frame (4) side and the outer end of the divided main frame (6) (91), (92). And a damper (9) that assists in the extending direction. The rotation axis (b) of the hinge (5) attached in this manner will be described. In plan view, the extension direction of the tip of the rotation axis (b) is directed toward the rear in the longitudinal direction perpendicular to the center position of the main frame (4). Also, in a side view, the extension direction of the tip of the rotation axis (b) is directed to a low direction behind the main frame (4), and the rotation axis (b)
It is imperative that the shape of the line be inclined so as not to connect the intersection with the axis (a) of the main frame (4).

【The invention's effect】

As described above, the present invention provides a sub-frame by rotating the sub-frame about 90 degrees with respect to the main frame with respect to the main frame about the attached hinge as a contracting means for folding the sub-frame into a prescribed vehicle width by turning. The nail and the protruding device of the gauge wheel mounted on the frame via the middle bone beam are stored within the set dimension (l) and can be accommodated within the specified vehicle width. Also, in side view, the center line of the sub-frame rises between the vertical and horizontal, that is, at an angle of about 45 degrees, and the ascending labor is less than 1/2 the previous time, and Since there is no descent action, the support support effort and danger can be eliminated.

[Brief description of the drawings]

FIG. 1 is a side view of a cultivator in which a medium bone beam equipped with equipment such as a claw and a gauge wheel is attached to a main frame, FIG. 2 is a front view of FIG. 1, and FIG. FIG. 4 is a perspective view of the hinge, FIG. 5 is a schematic plan view showing the operation, and FIG. 6 is a schematic side view showing the operation. (1) ... scratching nail, (2) ... gauge wheel, (3) ...
... Medium bone beam, (4) ... Main frame, (5) ... Hinge, (6) ... Sub frame, (7) ... Hinge part, (8)
... Fixing and maintaining means, (9) ... Damper, (10) ... Link, (11) ... Coil spring, (12) ... Channel beam, (A) ... Cultivator, (l) ... Width Dimensions, (a) ... axis, (b) ... rotation axis, (r) ...
… A circular line.

Claims (5)

(57) [Scope of request for utility model registration] 1. A channel beam (3) in which a plurality of bone beams (3) equipped with a claw (1) and a gauge wheel (2) are fixed to a frame via a link (10) and a coil spring (11), respectively. The frame of the set length in the cultivator (A) connected to and connected in parallel to 12) is divided into a main frame (4) having a width (l) and two sub-frames (6), At each of both ends of (4) and one end of each sub-frame (6), a line corresponding to the axis of the main frame (4) obliquely to the axis of rotation (b).
And the main frame (4)
Each of the sub-frames (6) can perform oblique rotation, and the rotation angle thereof is about 90 degrees, and the claw (1) of the bone beam (3) mounted on the sub-frame (6) is rotated. ) And the front end of the gauge wheel (2) falls within the range of the width (1) in plan view. 2. An axis (a) of the main frame (4) and a rotation axis (b) of the hinge (5) at a hinge (5) connected to both ends of the main frame (4) and one end of each sub-frame (6). 2. The foldable frame cultivator according to claim 1, wherein said cultivator has a certain distance and does not connect intersections in all of its extending directions. 3. A hinge (5) for rotatably connecting a main frame (4) and a sub-frame (6), and a rotation axis when both hinges (7) forming the hinge (5) are joined. (B), the hinge (7) is located at a position a certain distance away;
The main frame (4) and the sub-frame (6) are fixed to each other so that the straight line penetrates obliquely with respect to the plane (a) so that the main frame (4) and the sub-frame (6) become the axis (a) of the main frame (4) and the sub-frame (6). The apparatus for folding a frame in a cultivator according to claim 1, wherein the apparatus comprises: 4. An hinge (5) for rotatably connecting the main frame (4) and the sub-frame (6), wherein the axis (a) of the sub-frame (6) is aligned with the axis (a) of the main frame (4). And a state maintaining means for maintaining a state in which the sub-frame (6) is rotated to the effective rotation limit position with respect to the main frame (4) when being on an extension line of the main frame (4). The apparatus for folding a frame in the cultivator according to claim 1. 5. In addition to a hinge (5) used as a rotatable connection means between the main frame (4) and the sub-frame (6), a damper (9) for assisting in a rotational movement and an extension direction is provided. 2. A foldable frame cultivator according to claim 1, wherein said main frame and said auxiliary frame are pivotally connected at their ends to each other.