JP4110538B2 - Underdrain formation device - Google Patents

Description

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

  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. A structure in which bullets capable of forming underdrains are disposed in the soil is known.

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.

The present invention aims to solve such inconveniences. Among the present inventions, the invention according to claim 1 is that the machine frame is connected to the traveling machine body by a connecting mechanism, and the machine frame is penetrated. The beam is vertically arranged so as to be freely swingable in the traveling direction by a swinging mechanism, and a bullet body capable of forming a culvert in the soil is disposed below the penetrating beam. An expansion member capable of forming a vertical opening that opens to the ground surface by extending one side surface of a penetration groove formed by extending in the vertical direction in the soil by the penetration beam is disposed at the position. An expansion mechanism for expanding the member is disposed, and as the expansion mechanism, a bearing cylinder is provided vertically at the rear portion of the machine frame, and a bearing piece is formed on the bearing cylinder, and a support shaft is provided on the bearing cylinder. the lower end of the support shaft rotatably and bearing to the bearing piece body while Tate設freely rotate, the said extension member It is provided on the lifting shaft in underdrain forming apparatus comprising intermittently forcedly be formed by providing an intermittent extension mechanism to a predetermined angle vertically around rotating in one direction the expansion member.

As described above, according to the present invention, the machine frame is coupled to the traveling machine body by the coupling mechanism, and the penetration beam is freely oscillated in the advancing direction to the machine frame by the oscillation mechanism. It is installed vertically, and a bullet body that can form a culvert in the soil is disposed below the penetration beam, and extends vertically in the soil by the penetration beam at a position behind the penetration beam. An expansion member capable of forming a vertical opening that opens to the ground surface by expanding one side surface of the penetration mark groove formed by the expansion mechanism is disposed, and an expansion mechanism that expands the expansion member is disposed. As described above, a bearing cylinder is vertically provided at the rear portion of the machine frame, and a bearing piece is formed on the bearing cylinder, and a support shaft is rotatably provided on the bearing cylinder and a lower end portion of the support shaft is provided as a bearing piece. body rotatably by bearings forcibly Tokoro intermittently unidirectionally extended member provided with the extension member to the support shaft Since an intermittent extension mechanism that rotates vertically is provided, the penetration beam oscillates in the advancing direction as the traveling body advances, and penetrates into the soil to form a penetration trace groove and a bullet body. In this case, the expansion member disposed at the rear position in the traveling direction of the penetrating beam forcibly rotates the expansion member in one direction forcibly and vertically by a predetermined angle. It can be expanded by the expansion mechanism, and can extend a side surface of the penetration trace groove formed by extending in the vertical direction in the soil by the penetration beam to form a vertical opening that opens to the ground surface. Even if both opposing surfaces of the penetration groove mark close and close as time passes, the vertical channel is maintained, and the presence of this vertical channel keeps the drainage and ventilation of the underdrain well. Can do.

  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 vertically on the bearing cylinder 17 so as to be rotatable in a vertical direction, and a bearing piece 19 is formed on the bearing cylinder 17. The lower end portion of the support shaft 18 is rotatably supported by the bearing piece body 19, and a blade plate-like projecting body 15 a as the expansion member 15 is vertically extended on the support shaft 18 and is extended. As the mechanism 16, an intermittent expansion mechanism 16a is used. 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 of the speed reduction mechanism 20 is connected. A chain mechanism 20d is interposed between the rotating vertical axis 20c and the rotating arm 22 is attached to the rotating vertical axis 20c. A push roll 23 is installed on the rotating arm 22, and the upper end of the support shaft 18 is pushed. An engaging claw member 24 that can be pressed by the moving roll 23 is horizontally provided. There.

  Accordingly, the rotation vertical axis 20c is rotated by the rotation of the main shaft 8, and the rotation of the rotation vertical axis 20c causes the push roll 23 to engage and push the engagement claw member 24, and the expansion member 15 is forced by this push. When the push roll 23 is separated from the engagement claw member 24 by further rotation, the longitudinal opening T is formed to extend by a predetermined angle, and when the push roll 23 is separated from the engagement claw member 24 by further rotation, 15a abuts on the side surface of the penetration mark groove S of the penetration beam 4 and returns and rotates, and the ridge 15a reciprocally rotates at a constant cycle at a constant forward / reverse predetermined angle. .

  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 satisfactorily. In this case, the expansion member 15 is formed on the penetration groove mark S. On the other hand, since the ridge body 15a whose side surface can be expanded is provided, the fan-shaped vertical port T corresponding to the radius of the ridge body 15a 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 reciprocally rotated at a predetermined angle, and the vertical opening T can be formed well.

  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.

  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 H Undercut T Vertical exit path S Penetration groove trace M Ground surface 1 Traveling machine body 2 Connection mechanism 3 Machine frame 4 Penetration beam 5 Shaking mechanism 14 Bullet body 15 Expansion member 16 Expansion mechanism 16a Intermittent expansion mechanism 18 Support shaft

Claims (1)

The machine frame is connected to the traveling machine body by the connection mechanism, and the penetration beam is vertically installed in the machine frame so as to be freely swingable in the traveling direction by the shaking mechanism, and a culvert can be formed in the soil below the penetration beam. A bullet body is provided, and one side surface of a penetration trace groove formed by extending the penetration beam in the vertical direction in the soil is extended to the ground surface at a position behind the penetration direction of the penetration beam. An expansion member capable of forming an open vertical opening is disposed, and an expansion mechanism for expanding the expansion member is disposed. As the expansion mechanism , a bearing cylinder is vertically disposed at the rear portion of the machine frame, and A bearing piece is formed on the bearing cylinder, and a support shaft is vertically provided on the bearing cylinder, and a lower end portion of the support shaft is rotatably supported on the bearing piece to support the expansion member. An intermittent expansion mechanism is provided that is provided on the shaft and forcibly rotates the expansion member by a predetermined angle longitudinally in one direction. Underdrain forming apparatus characterized by comprising Te.

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