JP4174780B2 - Underdrain formation device - Google Patents

Description

  The present invention relates to a culvert forming apparatus used when forming a culvert in, for example, paddy field or field soil.

  Conventionally, as this type of culvert formation device, a machine frame is connected to a traveling machine body by a connecting mechanism, and a penetration beam is vertically installed on the machine frame so as to be freely swingable in a moving direction by a shaking mechanism, and is placed below the penetration beam. There is known a structure in which bullets capable of forming underdrains are arranged in the soil.

Paddy fields and the like are composed of a surface layer, a lower layer, and a lower core soil layer, and a penetration beam is penetrated into the tiller layer, the core layer and the core soil layer to break the tiller. A culvert will be formed in the core soil layer below it by bullets.
Japanese Utility Model Publication No. 61-80602

  However, in the case of the above-described conventional structure, immediately after the penetration operation of the penetration beam, the penetration trace groove formed in the vertical direction in the soil is maintained at a width corresponding to the thickness of the penetration beam. With the passage of time, both opposing surfaces of the penetration groove mark close and close together, which has the disadvantage that the original drainage and breathability of the underdrain may be reduced.

SUMMARY OF THE INVENTION The present invention aims to solve such inconveniences, and in the invention according to claim 1, the machine frame is connected to the traveling machine body by a connecting mechanism, and the machine frame is provided. The penetrating beam is vertically arranged so as to be freely swingable in the traveling direction by the swing mechanism, and is formed by extending in the vertical direction in the soil by the penetrating beam at a position behind the penetrating beam in the traveling direction. An expansion member that can form a vertical opening that opens to the ground surface by expanding the track groove is disposed, and an expansion mechanism that expands the expansion member is disposed. As the expansion mechanism, the expansion member An intermittent expansion mechanism is provided for intermittently expanding the bearing, and as the intermittent expansion mechanism , a bearing cylinder is provided vertically at the rear of the machine frame , and the support cylinder is positioned behind the penetration beam in the bearing cylinder. horizontally rotatably to Tate設, to form a bearing piece body to the bushing body, the lower end of the support shaft It was bearing rotatably by the bearing piece body, in underdrain forming apparatus characterized by comprising providing a vane-like lip member extending in the vertical direction as the expansion member to the support shaft.

As described above, according to the first aspect of the present invention, the penetration beam penetrates into the soil while swinging in the traveling direction to form a penetration trace groove as the traveling body moves. At this time, the expansion member disposed at the rear position in the traveling direction of the penetration beam is expanded by the expansion mechanism, and the penetration trace groove formed by extending in the vertical direction in the soil by the penetration beam is formed. It can be expanded to form a vertical opening that opens to the ground surface, and therefore the vertical opening is maintained even when both opposing surfaces of the penetration groove mark close and close with time, Due to the presence of this vertical opening, drainage and air permeability can be well maintained, and a support shaft is vertically installed in the machine frame so as to be horizontally rotatable and positioned behind the penetration beam. Since the shaft is provided with a blade-like protrusion extending in the vertical direction as the expansion member, The strip body radius of the sector-shaped vertical opening path of the can be easily formed, as the expansion mechanism is provided an intermittent extension mechanism for intermittently extended operating the expansion member, as the intermittent expansion mechanism, the machine A bearing cylinder is provided vertically at the rear part of the frame, and a support shaft is provided in the bearing cylinder so as to be horizontally rotatable and positioned behind the penetration beam, and a bearing piece is formed on the bearing cylinder. Since the lower end portion of the support shaft is rotatably supported by the bearing piece body, and the support shaft is provided with a blade plate-like projecting body extending in the vertical direction as the expansion member, it is formed by a penetration beam. It is possible to form the vertical channel by expanding the piercing traces scattered in a dotted manner, and it is possible to satisfactorily form the vertical channel.

  1 to 12 show an embodiment of the present invention, FIGS. 1 to 10 show a first embodiment, and FIGS. 11 and 12 show a second embodiment.

  In the first embodiment shown in FIGS. 1 to 10, reference numeral 1 denotes a traveling machine body. In this case, a tractor is used, and a machine frame 3 can be moved up and down by a three-point link type connecting mechanism 2 at the rear of the traveling machine body 1. Concatenated.

  4 is a penetrating beam, and 5 is a vibration mechanism. In this case, the middle part of the swing arm 6 is pivotally attached to the machine frame 3 by a fulcrum shaft 7 and the main shaft 8 is mounted on the machine frame 3. Are rotatably mounted by bearings 8a and 8a, the power take-off shaft 9 of the traveling machine body 1 and the main shaft 8 are connected by a universal joint 10, and an eccentric wheel mechanism 11 is provided between the swing arm 6 and the penetration beam 4. In other words, as the eccentric ring mechanism 11, an eccentric shaft portion 11a is formed between the bearings 8a and 8a of the main shaft 8, and a bearing 11c on the upper side of the connecting member 11b is fitted to the eccentric shaft portion 11a to be connected. The base shaft 6a of the swing arm 6 is fitted into the lower bearing 11d of the member 11b, and the swing arm 6 is guided to swing up and down by the guide rolls 6b and 6b and the guide pieces 3a and 3a. Up and down swinging of the swing arm 6 about the fulcrum shaft 7 through the mechanism 11 The penetrating beam 4 is attached to the rear end of the swing arm 6 in the vertical direction, the housing 12 is attached to the lower end of the penetrating beam 4, and the bullet-shaped bullet 14 is connected by the hook-shaped connecting member 13. Configured.

  Thus, as the traveling machine body 1 advances, the penetration beam 4 oscillates in the advancing direction and penetrates into the soil W to form a penetration trace groove S, and a bullet at a position behind the penetration of the housing 12. The culvert H is continuously formed by the body 14.

  Reference numeral 15 denotes an expansion member, and reference numeral 16 denotes an expansion mechanism. The expansion member 15 is disposed at a rear position in the traveling direction of the penetration beam 4, and is formed to extend in the vertical direction of the soil W by the penetration beam 4. A longitudinal opening T that opens to the ground surface M by extending the penetration trace groove S is provided, and the expansion mechanism 16 is configured to expand the expansion member 15.

  In this case, a bearing cylinder 17 is provided vertically at the rear portion of the machine casing 3, a support shaft 18 is provided rotatably on the bearing cylinder 17, a bearing piece 19 is formed on the bearing cylinder 17, and the support shaft The lower end of 18 is rotatably supported by a bearing piece 19, and a blade-like projecting body 15 a as an expansion member 15 is provided on the support shaft 18 so as to extend vertically. In this case, the speed reduction mechanism 20 is attached to the machine casing 3, the input shaft 20a of the speed reduction mechanism 20 and the main shaft 8 are connected by a joint 21, and the output shaft 20b of the speed reduction mechanism 20 rotates. A chain mechanism 20 d is interposed between the vertical axis 20 c, a revolving arm 22 is attached to the rotating vertical axis 20 c, a push roll 23 is implanted in the revolving arm 22, and a push roll 23 is provided at the upper end of the support shaft 18. The engaging claw member 24 that can be pressed by a horizontal projection is provided.

  Thus, the rotation longitudinal axis 20c is rotated by the rotation of the main shaft 8, and the pushing roll 23 engages and pushes the engagement claw member 24 by the rotation of the rotation longitudinal axis 20c, and the expansion member 15 is forcibly rotated by this pushing. As a result, the vertical opening T is extended and formed, and when the push roll 23 is separated from the engaging claw member 24 by further rotation, the blade-like protrusion 15a of the expansion member 15 is penetrated by the penetration beam 4. The abutment groove S abuts the side surface of the track groove S and rotates back to return, and the ridge 15a is intermittently rotated at regular intervals in a regular forward / reverse direction.

  Reference numeral 25 denotes a grooved disk. A mounting piece 25a is suspended from the base of the penetration beam 4, and the grooved disk 25 is rotatably attached to the mounting piece 25a so that the penetration beam 4 moves forward in the traveling direction. The penetration groove F is formed while swinging.

  Reference numeral 26 denotes a wheel, and mounting arms 26a and 26a are disposed at both left and right positions of the machine casing 3 so that the height can be adjusted by a height adjusting mechanism 26b, and the wheel 26 is grounded on the ground surface M such as a paddy surface. In addition, it is configured so that the stable running of the machine casing 3 and the formation height from the surface of the culvert H can be set.

  Since the first embodiment of the present embodiment has the above-described configuration, the penetration beam 4 penetrates into the soil W while swinging in the traveling direction to form the penetration trace groove S as the traveling body 1 advances. At the same time, the culvert H is continuously formed by the bullet 14 at the rearward penetration position of the casing 12, and at this time, as shown in FIG. 10, the expansion member disposed at the rearward position in the traveling direction of the penetration beam 4 as shown in FIG. 15 is expanded by the expansion mechanism 16, and a longitudinal groove-shaped longitudinal path T that opens to the ground surface M by expanding the penetration groove S formed by extending the vertical direction of the soil W by the penetration beam 4. Therefore, even when both opposing surfaces of the penetration groove mark S close and close together with time, the vertical channel T is maintained, and the presence of the vertical channel T causes the undercut H It is possible to maintain good drainage and air permeability. Although the lower end of the vertical channel T is appropriately set, it is generally desirable that the vertical channel T is set at a position near the culvert that does not reach the culvert H, because the culvert H and the vertical channel T are in communication. This is because the soil on the inner surface of the vertical channel T may flow into the underdrain H and block the underdrain H.

  Further, in this case, since the expansion mechanism 16 is provided with an intermittent expansion mechanism 16a for intermittently expanding the expansion member 15, the penetration trace groove S formed by the penetration beam 4 as shown in FIG. Can be widened and expanded in a dotted manner to form the vertical channel T, and the vertical channel T can be formed well. In this case, the machine frame 3 can be rearward of the penetration beam 4. The support shaft 18 is vertically disposed so as to be horizontally rotatable, and the support shaft 18 is provided with a blade plate-like protrusion body 15a extending in the vertical direction as the expansion member 15, so that the radius of the protrusion body 15a is provided. A minute fan-shaped vertical opening T can be easily formed.

  The second embodiment shown in FIGS. 11 and 12 shows another structure. In this case, spring bearing members 19a and 19a are attached to the bearing cylinder 19, and the spring hanging members 19a and 19a and the ridge body 15a are respectively attached. The return springs 27 and 27 are hung, and the protrusions 15a of the expansion member 15 are positioned rearward in the normal state by the return springs 27 and 27.

  Even in the second embodiment, the same effect as the first embodiment can be obtained, and the protrusion 15a of the expansion member 15 is forcibly inserted by the return springs 27 and 27. Thus, the protrusion 15a is reliably rotated, and the vertical opening T can be formed satisfactorily.

  The present invention is not limited to the above-described embodiment, and the structure of the expansion member 15 and the expansion mechanism 16 is appropriately changed and designed. For example, as the expansion mechanism 16, the expansion member 15 is continuously rotated in conformity with the traveling speed of the traveling machine body 1, so that a vertical opening having a sinusoidal side surface on the left and right by the protrusion body 15 a with the penetration trace groove S as a boundary. May be formed.

  As described above, the intended purpose can be sufficiently achieved.

1 is an overall side view of a first embodiment of the present invention. It is a partial side view of the first embodiment of the present invention. It is a fragmentary top view of the 1st example of an embodiment of the invention. It is a fragmentary sectional side view of the first embodiment of the present invention. It is a partial plane sectional view of the example of the 1st embodiment of the present invention. It is a partial expanded side sectional view of the first embodiment of the present invention. It is a partial expanded plane sectional view of the first embodiment of the present invention. It is a partial cross-sectional view of the first embodiment of the present invention. It is a fragmentary top view of the 1st example of an embodiment of the invention. It is a fragmentary top view of the 1st example of an embodiment of the invention. It is a partial rear view of the second embodiment of the present invention. It is a fragmentary top sectional view of the 2nd example of an embodiment of the invention.

Explanation of symbols

W Underground T Longitudinal opening S Trace of penetration groove M Ground surface 1 Traveling machine body 2 Connection mechanism 3 Machine frame 4 Penetration beam 5 Shaking mechanism 15 Expansion member 15a Projection body 16 Expansion mechanism 16a Intermittent expansion mechanism
17 Bearing cylinder 18 Support shaft
19 bearing piece

Claims (1)

A machine frame is connected to the traveling machine body by a connecting mechanism, and a penetration beam is vertically installed on the machine frame by a shaking mechanism so as to be freely swingable in the traveling direction. An expansion mechanism that expands the penetration groove formed by extending in the vertical direction in the soil by the incoming beam and forms a vertical opening that opens to the ground surface, and expands the expansion member. As the expansion mechanism, an intermittent expansion mechanism that intermittently expands the expansion member is provided. As the intermittent expansion mechanism , a bearing cylinder is provided vertically at the rear of the machine frame , and the bearing A support shaft is vertically arranged in the cylinder so as to be positioned behind the penetration beam, and a bearing piece is formed in the bearing cylinder, and a lower end portion of the support shaft is rotatable by the bearing piece. bearings, and setting the wing-shaped projection member which extends in the vertical direction as the expansion member to the support shaft Underdrain forming apparatus characterized by comprising Te.

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