JP4445936B2 - Protruding device - Google Patents

Description

  The present invention relates to a column pulling device for pulling out a column for a tunnel mulch.

  Conventionally, in order to protect crops such as radishes and carrots from frost etc., there is a tunnel mulch that covers the crop in a tunnel shape. By inserting both end portions of the arch into the ground, an arched column is built in the field at a predetermined interval along the longitudinal direction of the basket, and a multi-film is stretched over the built column.

When crops are harvested after harvesting, the multi-film is peeled off and the struts are pulled out. However, when pulling out the struts manually, the number of struts to be pulled out is too much labor. There is a problem that requires.
In order to reduce this labor, there has been provided a column puller that pulls out a column for a tunnel mulch (see Patent Document 1).

This strut puller includes a traveling machine body that can travel in the longitudinal direction of the fence across the fence, and an upper and lower rotary body that sandwiches the center in the length direction of the arched pillar built in the field, The upper and lower rotating bodies are both constituted by an endless belt-like conveying belt, and are suspended on the front and rear pulleys that are rotatable around the left and right axes so as to be able to circulate in the longitudinal direction of the belt.
In addition, the upper and lower conveyor belts are arranged in an inclined shape so as to move upward as going backward, and the lower part of the upper conveyor belt and the upper part of the lower conveyor belt are brought into close contact with each other. It is configured so that the support pillars are sandwiched between the upper and lower transport belts, and the upper and lower transport belts are circulated in the circumferential direction so that the intimate portions of the upper and lower transport belts move backward, thereby transporting the sandwiched support pillars rearward and upward. And is configured to be pulled out.

In this column pulling machine, by pulling the column with the upper and lower conveyor belts while running the traveling body, the forward movement of the traveling body is offset by the rear movement of the column with the upper and lower conveyor belts, and the column with respect to the field The column is pulled up and pulled out without changing the position.
JP 2002-253062 A

In the conventional strut puller, the strut is moved backward relative to the traveling body while the traveling body is advanced, and the strut is lifted directly above the field. When the driving wheel slips, the support column is pulled out while tilting the support column at an angle, so that there is a problem that the pull-out resistance of the support column increases.
In addition, the traveling speed of the puller during pulling operation of the support column is relatively slow because it matches the walking speed of the worker, and therefore the length of the upper and lower conveyor belts in the front-rear direction is increased. There is also a problem that the direction length becomes long.

If the length of the upper and lower conveyor belts is increased, the support clamping force in the middle of the upper and lower conveyor belts will be weakened, and if the length of the puller in the front-rear direction is increased, it will be disadvantageous when turning, storing, etc. It is.
In view of the above problems, an object of the present invention is to provide a strut pulling apparatus that can pull out a strut satisfactorily and is compact in the front-rear direction.

The technical means taken by the present invention in order to solve the above technical problem is to sandwich the traveling body and the longitudinal direction center side of the strut having both ends in the length direction inserted into the ground and having an arch shape. An upper and lower rotating body, and a strut pulling device that pulls the strut by rotating the upper and lower rotating bodies while running the traveling body,
The lower rotator is composed of a circular rotator that rotates around the left-right axis, and the upper rotator is an endless belt-shaped rotator that is in contact with the lower rotator from the front side to the upper surface side. The upper and lower rotating bodies are configured to rotate upward at a peripheral speed faster than the peripheral speed of the driving wheels of the traveling body, thereby raising the support column upward.

Further, it is preferable to provide a pulling member that protrudes outward in the radial direction from the peripheral surface of the lower rotator and rotates along with the lower rotator to hook the column and pull it upward.
In addition, a support column housing part is provided on the rear side of the upper and lower rotating bodies so as to store the pulled out struts. It is preferable to provide a guiding means for guiding, and a support guide surface of the guide means is configured to be separated from the pulling member in the middle of guiding the support to the support housing.

  In addition, it is preferable that the guide means is provided with continuous rotation preventing means for preventing the column from rotating with the pulling member.

  According to the present invention, the lower rotator is configured with a circular rotator in a side view, and the upper rotator is configured with an endless belt-shaped rotator that is in contact with the lower rotator from the front side to the upper surface side. The struts are sandwiched between the upper and lower rotating bodies, and the upper and lower rotating bodies are lifted upward by rotating the upper and lower rotations, and the upper and lower rotating bodies are driven by the peripheral speed of the driving wheels of the traveling body. In addition, since it is made to rotate at a high peripheral speed, it is possible to satisfactorily pull out the strut even if the driving wheel of the traveling body slips, and to make the dimensions in the front-rear direction of the strut pulling device compact.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
2 and 3, reference numeral 1 denotes a tunnel multi-recovery machine for recovering the tunnel multi-multi film 2 and the column 3, and this tunnel multi-recovery machine 1 can travel along the eaves 4 across the eaves 4. This is a walking type working machine including a traveling body 5, a multi-peeling mechanism 6 for stripping the multi-film 2, and a strut pulling mechanism 7 for pulling out the strut 3 for tunnel multi inserted in the field. The multi-stripping machine comprising the body 5 and the multi-stripping mechanism 6 and the strut pulling machine comprising the traveling body 5 and the strut pulling mechanism 7 are combined to perform stripping of the multi-film 2 and pulling of the strut 3 in one step. It is the working machine which did.

  The pillar 3 for the tunnel mulch is formed by bending the elastically deformable rod-like strut 3 into an arch shape (U-shape protruding upward) and inserting both longitudinal ends of the strut 3 into the ground. It is built in the field so as to exhibit an arch shape and at a predetermined interval along the longitudinal direction of the ridge 4, and the multi-film 2 is stretched in a tunnel shape along the ridge 4 and across the support column 3. .

  As shown in FIGS. 1 to 4, the traveling body 5 includes a traveling body 8, a pair of left and right front and rear wheels 9 and 10 that support the traveling body 8 so as to travel, and an engine (driving means) that drives the rear wheel 10. ) 12, a fuel tank 13 for storing fuel for the engine 12, a transmission case 14, a hydraulic pump 15 driven by the engine 12, and a hydraulic oil tank 16 for storing hydraulic oil for hydraulic drive equipment And a steering handle 17.

The traveling machine body 8 includes a pair of left and right side frames 18 arranged at intervals in the left and right direction, a connecting frame 19 that connects the upper end sides of the left and right side frames 18 to each other, and front and lower portions of the left and right side frames 18. And a front lower frame 20 connecting the two.
Each of the left and right side frames 18 includes a rear vertical frame member 21 arranged in the vertical direction, an upper frame member 22 provided in a protruding shape from the upper end side of the rear vertical frame member 21, and the rear vertical frame member 21. An intermediate frame member 23 provided to project forward from the middle in the vertical direction, a front vertical frame member 24 connecting the front end side of the intermediate frame member 23 and the front end side of the upper frame member 22, and a rear vertical frame member A lower frame member 25 extending forward from the lower end side of 21 to a midway portion in the front-rear direction of the intermediate frame member 23, and a front end of the lower frame member 25 formed in a curved shape protruding rearward and upward The main structure includes a curved frame member 26 that connects the front side of the intermediate frame member 23, and an extended frame member 27 that extends rearward from the upper end side of the rear vertical frame member 21. To have.

  The connecting frame 19 includes a front-rear direction frame member 28 disposed in the front-rear direction between the central portion in the left-right direction of the traveling machine body 8 and the upper frame member 22, a front end portion of the upper frame member 22, and a front end of the front-rear direction frame member 28. And a pair of front and rear intermediate frame members 30 connecting the middle portions of the upper frame member 22 and the longitudinal frame member 28 to each other, and the left and right extending frame members. 27, the rear horizontal frame member 32 for connecting the rear ends of the frame 27, the front connection frame member 33 for connecting the front portions of the left and right front-rear frame members 28, and the intermediate horizontal frame members 30 on the left and right rear sides. And an intermediate connecting frame member 34.

The front-rear frame member 28 is connected to the front structural member 28A that connects the front horizontal frame member 29 and the rear intermediate horizontal frame member 30, and the rear intermediate frame member 30 and the rear horizontal frame member 32 that are connected to each other. The rear constituent member 28B is provided in a pair of upper and lower parts.
The left and right front wheels 9 are attached to the front lower portions of the left and right side frames 18 via attachment frames 35, and the left and right rear wheels 10 are attached to the lower ends of the left and right rear vertical frame members 21 so as to be rotatable about the left and right axes. The front wheel 9 is a caster wheel, and the rear wheel 10 is a drive wheel.

  The engine 12, the transmission case 14, the fuel tank 13, the hydraulic pump 15, and the hydraulic oil tank 16 are mounted on a mounting plate 36 fixed on the intermediate frame member 23 of the left side frame 18. A weight for balancing the weight of the engine 12, the transmission case 14, the fuel tank 13, the hydraulic pump 15, and the hydraulic oil tank 16 on the left side is provided at the right rear portion (the middle portion in the vertical direction of the right rear vertical frame member 21). 37 is attached.

  The engine 12 is disposed in the middle part in the front-rear direction of the traveling machine body 8, the transmission case 14 is disposed in a rearwardly inclined manner on the rear side of the engine 12, and the fuel tank 13 is disposed on the upper side of the engine 12. The oil tank 16 is disposed on the front side of the engine 12, and the hydraulic pump 15 is driven by power transmitted from the output shaft of the engine 12 via a transmission means 38 such as a belt winding transmission mechanism. This power is input from the lower part of the transmission case 14 into the transmission case 14 via a transmission means 39 such as a belt winding transmission mechanism.

  The power input into the transmission case 14 is output from the left and right transmission shafts 40 and 41 disposed on the upper side of the transmission case 14 via a power transmission mechanism in the transmission case 14 and the left and right transmission shafts. 40, 41 is transmitted to the rear wheel 10 via a power transmission mechanism in each of the left and right rear vertical frame members 21, and the rear wheel 10 is rotationally driven.

The steering handle 17 is attached to the upper frame member 22 of the left side frame 18 and is provided with a pair of front and rear.
The front and rear handles 17 are each provided with a steering lever (not shown). By operating one of the steering levers, power transmission to one of the left and right rear wheels 10 is cut off, and the other steering lever is By operating the, the transmission of power to the other of the left and right rear wheels 10 is cut off, so that the traveling machine body 8 can be steered.

Further, the traveling body 5 is provided with a traveling clutch lever that simultaneously disconnects power transmission to the left and right rear wheels 10, a shift lever for forward / reverse switching operation, and a shift operation.
As shown in FIGS. 1 to 7, the column pulling mechanism 7 is arranged on the front side of the traveling machine body 8 and is detachably attached to the traveling machine body 8, and the height of the main frame 43 is adjusted. A height adjusting device 44, a pulling portion 45 for pulling out the column 3, a mounting body 46 for attaching the pulling portion 45, a column accommodating portion 47 for accommodating the column 3 pulled out by the pulling unit 45, and a column that has been pulled out 3 is provided with guide means 48 for guiding 3 from the extraction portion 45 to the support housing portion 47, a regulation rod 49 for restricting the jumping of the extracted support 3, and a protective cover 50 covering the lower side of the extraction portion 45.

  The main frame 43 is disposed in the left-right direction so as to extend from the upper surface of one vertical frame member 51 to the upper surface of the other vertical frame member 51 and a pair of left and right vertical frame members 51 disposed in the vertical direction. A pair of upper and lower upper connecting frame members 53 that are arranged between a horizontal frame member 52 that connects the frame members 51 and a vertical frame member 51 on the lower side of the horizontal frame member 52 and connects the upper portions of the left and right vertical frame members 51. And a lower connecting frame member 54 that is arranged on the lower end side between the left and right vertical frame members 51 and connects the left and right vertical frame members 51.

The upper parts of the left and right vertical frame members 51 are fixedly attached to the front surface of the front horizontal frame member 29 on the same side in the left and right direction by bolts and nuts by the bolts and nuts. The bolt insertion hole formed in 51 is a long hole that is long in the vertical direction, and the main frame 43 can be moved in the vertical direction by loosening the tightening of the nut.
In addition, the lower end side of the left and right vertical frame member 51 is inserted through a holder 56 provided on the front side of the front lower frame 20 of the traveling machine body 8 so as to be movable in the vertical direction and immovable in the front-rear and left-right directions.

The height adjusting device 44 is disposed on the rear side of the main frame 43 and in the center in the left-right direction of the traveling machine body 8.
The height adjusting device 44 is inserted, for example, in an up and down direction, and an upper cylinder 57 whose upper part is fixed to the horizontal frame member 52 of the main frame 43 and a vertically movable from the lower end side of the outer cylinder 57. The inner cylinder 58 is inserted into the outer cylinder 57, and is supported by the outer cylinder 57 so as to be rotatable about a vertical axis, and is screwed into a nut member 59 provided on the upper portion of the inner cylinder 57. A screw rod 60, an operation handle 61 provided on the upper end side of the screw rod 60, and a stay 62 fixed to the lower end of the inner cylinder 57 and fixed to the upper surface side of the front lower frame 20 of the traveling machine body 8. It is comprised from the bracket 63 pivotally connected to.

In the height adjusting device 44, the inner cylinder 58 is rotated by rotating the operation handle 61 and rotating the screw rod 60 about the axis while the nuts for fixing the left and right vertical frame members 51 are loosened. By moving up and down, the height of the main frame 43 (extraction part 45) can be adjusted.
The attachment body 46 has upper and lower support frames 66 and 67 provided so as to protrude forward from the main frame 43.

A pair of left and right upper support frames 66 are provided. Each of the left and right upper support frames 66 is made of a plate material, and is arranged so that the plate thickness direction is the left and right direction, with the rear side extending forward from the main frame 43. It is formed in the middle part and is bent in the middle part, and is formed so as to extend in an inclined direction in which the front part side moves downward as it goes forward.
The left and right upper support frames 66 are connected to each other by connecting members 68 on the front side and the rear side.

The rear end sides of the left and right upper support frames 66 are fixedly attached to an L-shaped stay 70 fixed to an attachment plate 69 fixed over the upper and lower upper connecting frame members 53 of the main frame 43.
The stay 70 is attached to the mounting plate 69 so that the vertical position can be adjusted by bolts and nuts, and the rear end side of the upper support frame 66 is attached to the stay 70 so that the front and rear positions can be adjusted by bolts and nuts. The position of the upper support frame 66 can be adjusted up and down and back and forth.

  The lower support frame 67 is composed of a square pipe or the like and is provided in a pair of left and right. The left and right lower support frames 67 are projected forward from the lower connection frame member 54 of the main frame 43 and are formed on the lower connection frame member 54. Support plates 71L and 71R are erected on the front end sides of the left and right lower support frames 67, and the rear side of the left and right lower support frames 67 are connected by a pair of front and rear connecting members 72.

The extraction part 45 includes upper and lower rotary bodies 73 and 74 that sandwich and hold the central side (top side) in the length direction of the column 3 built in an arch shape in the field, and driving means for driving the lower rotary body 74 75.
A pair of left and right lower rotating bodies 74 are provided, and the left and right lower rotating bodies 74 are disposed on the front side between the left and right lower support frames 67.

Further, the left and right lower rotating bodies 74 are configured by a circular rotating body in a side view, and at least the outer peripheral side is configured by an elastic body such as rubber, and the outer peripheral side can be elastically deformed. Then, it is comprised by the foil 74A and the pneumatic tire 74B externally fitted by this foil 74A.
Between the support plates 71L and 71R erected on the front end side of each of the left and right lower support frames 67, a rotation shaft 76 is installed, and the rotation shaft 76 is rotatably supported by the support plates 71L and 71R. The left and right lower rotators 74 are externally fitted and fixed to the shaft 76 so as to be integrally rotatable, whereby the left and right lower rotators 74 are supported by the support plates 71L and 71R so as to be rotatable about the left and right axes. .

  The driving means 75 is composed of a hydraulic motor driven by pressure oil from the hydraulic pump 15 provided in the traveling body 5 and is fixedly attached to the outer surface of the left support plate 71L. The rotating shaft is driven by the hydraulic motor 75. The left and right lower rotating bodies 74 are integrally rotated so as to rotate from the front to the rear on the upper side of the lower rotating body 74 by rotating the 76 (in the direction of arrow A in FIG. 7). It is possible.

The hydraulic motor 75 can be driven and stopped by switching a switching valve operated by an operating means such as an operating lever provided on the traveling machine body 8.
The left and right lower rotating bodies 74 are rotationally driven at a peripheral speed faster than the peripheral speed of the driving wheel (rear wheel 10 in the present embodiment) of the traveling body 5 at the time of work. When the wheel 10 had a diameter of 500 mm, the lower rotating body 74 had a diameter of 380 mm, and the engine 12 rotational speed was 1200 rpm, the rotational speed of the rear wheel 10 was 14 rpm, and the rotational speed of the lower rotating body 74 was 86 rpm.

Accordingly, the peripheral speed of the rear wheel 10 is approximately 2.2 m / min, while the peripheral speed of the lower rotating body 74 is approximately 102.6 m / min.
Note that these numerical values are not limited, and can be appropriately changed in design.
A boss 77 is fitted and fixed between the left and right lower rotating bodies 74 of the rotating shaft 76, and a pulling member 78 disposed in a direction perpendicular to the axis of the rotating shaft 76 is provided on the boss 77. The pulling member 78 is provided so as to rotate together with the lower rotating body 74.

In the present embodiment, four pull-up members 78 are provided at equal intervals in the circumferential direction of the boss 77, and one or a plurality of pull-up members 78 are formed by covering the outer surface of the metal core with a rubber material. Made of bar material.
Further, the leading end side of the pulling member 78 protrudes radially outward from the peripheral surface of the lower rotating body 74.

The upper rotating body 73 is an endless belt-shaped rotating body made of a rubber-like elastic body, and a pair of left and right rotating bodies 73 are provided corresponding to the lower rotating body 74.
Further, in the present embodiment, a rectangular parallelepiped protrusion 79 extending in the band width direction of the upper rotating body 73 is predetermined on the outer circumferential surface of the upper rotating body 73 (contact surface with the lower rotating body 74) in the circumferential direction. It is integrally formed at intervals and over the entire circumference.

  The left and right upper rotating bodies 73 are disposed between the upper support frames 66 and are disposed in front upper portions of the lower rotating bodies 74 on the same side in the left-right direction. The front and rear guide pulleys 81 and 82 provided on the side (opposite surface side) and the tension roller 83 are suspended so as to be able to circulate in the longitudinal direction (circumferential direction). Is supported by the upper support frame 66 on the same side in the left-right direction.

The left and right front guide pulleys 81 are arranged at the front lower end side of the upper support frame 66, are located with a predetermined gap on the front side of the lower rotating body 74, and extend over the left and right upper support frames 66. The front support shaft 84 is supported so as to be rotatable around the left and right axes.
The left and right ends of the front support shaft 84 pass through guide holes 85 formed in the left and right upper support frame 66 and protrude outward from the upper support frame 66 in the left and right direction. In addition, the guide hole 85 is formed as a long hole in an inclined direction that moves downward as it goes forward, and the front support shaft 84 is movable along the guide hole 85.

  Further, on the outer surface side of the front lower portion of each of the left and right upper support frames 66, a tip end side of an adjustment screw 87 having an axis along the length direction of the guide hole 85 is disposed. A screw hole formed in a mounting wall 88 fixed to the outer surface of the adjustment screw 87 passes through the screw hole so as to be able to advance and retract freely, and the tip end side of the adjustment screw 87 is fixed to the cylindrical body 86. The front guide pulley 81 can be adjusted in position along the guide hole 85 by being screwed and screwed with respect to the mounting wall 88.

A lock nut 89 is screwed onto the adjustment screw 87.
The left and right rear guide pulleys 82 are disposed in the middle of the upper support frame 66, are located above the lower rotating body 74 with a predetermined gap, and are extended over the left and right upper support frames 66. The left and right upper support frame 66 is externally fitted and fixed to a rear support shaft 91 that is rotatably supported around the left and right axes.

The left and right tension rollers 83 are disposed so as to contact the inner peripheral surface of the upper portion between the front and rear guide pulleys 81 and 82 of the upper rotating body 73, and the inside of the upper rotating body 73 by the biasing force of the spring 93 of the tension adjusting mechanism 92. It is supported by the tension adjusting mechanism 92 so as to press the peripheral surface.
Note that the biasing force of the spring 93 of the tension adjusting mechanism 92 is adjustable.

The lower part between the front and rear guide pulleys 81 and 82 of the upper rotating body 73 is in close contact with the upper front peripheral surface of the lower rotating body 74 (from the front surface side to the upper surface side of the peripheral surface of the lower rotating body 74). By rotating the lower rotating body 74, the upper rotating body 73 rotates at the same peripheral speed as the lower rotating body 74 by the frictional force and circulates in the direction indicated by the arrow B in FIG. Rotate.
The closeness (pressing force) of the upper rotating body 73 with respect to the lower rotating body 74 can be adjusted by adjusting the front and rear and left and right positions of the upper support frame 66 and the position of the front guide pulley 81.

Further, a guide member 94 for guiding the tunnel multi support column 3 between the front guide pulley 81 and the lower rotating body 74 is provided on the lower end side of the front portion of the left and right upper support frames 66.
The guide member 94 is formed of a bar, and the lower side is disposed on the outer side of the front guide pulley 81 and is bent in a curved shape along the lower surface side of the front guide pulley 81, and the upper side is In the front side of the front guide pulley 81, it is formed in an inclined shape that moves upward as it goes forward.

The restriction rods 49 are attached to the upper portions of the left and right front vertical frame members 24 of the traveling machine body 8 so as to protrude forward and are provided as a pair of left and right.
The column support portion 47 is located on the rear side of the pull-out portion 45, and in this embodiment, the rear side of the left and right lower support frames 67 that receive the center in the length direction of the column 3 and the front of the traveling machine body 8. A pair of left and right mounting rods 95 that are provided on both the left and right sides of the lower frame 20 so as to project forward and receive the longitudinal ends of the support columns 3, and are provided on the front end sides of the left and right mounting rods 95. The front restricting member 96 restricting the forward movement of the accommodated support column 3 and the pair of left and right side restricting members 97 restricting the movement of the accommodated support column 3 in the left-right direction.

A mounting tube 98 arranged in the left-right direction is fixed to the front end portion of each of the left and right mounting rods 95, and a support rod 99 arranged in the left-right direction is inserted into each of the left and right mounting tubes 98, and left and right. The lateral restriction member 97 is fixed to the left and right outer ends of the left and right support rods 99 so as to be adjustable in the direction position.
A pair of guide means 48 are provided on the left and right sides. In this embodiment, the guide means 48 is formed by bending a bar in a curved shape. From the front ends of the support plates 71L and 71R provided at the front portions of the left and right lower support frames 67. The lower support frame 67 is provided over the rear part.

  The guide means 48 has a front portion extending upward from the upper front ends of the support plates 71L and 71R and extending rearwardly below the upper end of the lower rotating body 74. In the middle part, it is formed in a curved shape that protrudes rearward and protrudes upward in the middle part, and in the rear part side, it is inclined so as to move downward as it goes rearward and convex in the rear upper part It is formed in such a shape that it gradually separates from the lower rotating body 74 as it goes rearward, and the rear end portion of the guide means 48 is fixed to the lower support frame 67.

The upper surface side of the middle part of the guide means 48 and the rear surface side of the rear part serve as a column guide surface 100 that guides the column 3 to the column housing portion 47.
Further, the guide means 48 is formed on the rear lower side so as to be located rearward of the tip locus of the pulling member 78, and in the portion located rearward of the tip locus of the pulling member 78, the left and right guides are provided. The means 48 are connected by a connecting rod 101 in the left-right direction.

The rear side of the guide means 48 has a function as a regulating member that regulates the forward movement of the column 3 accommodated in the column accommodating portion 47. Further, the guide means 48 may be formed of a plate material.
The right and left sides of the protective cover 50 are attached to the side surface on the front end side of the lower support frame 67 so that the vertical position can be adjusted, and the protective cover 50 is disposed on the lower side of the lower rotating body 74 and the lower surface of the lower rotating body 74. The side is covered to prevent the crop from coming into contact with the lower rotating body 74 and the lifting member 78.

As shown in FIGS. 2 and 3, the multi-stripping mechanism 6 rotates around the left and right axes to wind up the multi-film 2, and a hydraulic motor (drive means) that rotationally drives the wind-up body 103. 104 and front and rear film guides 105 and 106 for guiding the multi-film 2.
The winding body 103 includes a drive shaft 107, a rotating disc 108 fixed on both the left and right sides of the driving shaft 107, a pair of winding rods 109 provided between the left and right rotating discs 108, And a flange member 115 disposed on the outer side of each rotating disk 108 and fixed to the drive shaft 107.

The drive shaft 107 of the winding body 103 is supported at both left and right ends thereof by a support body 110 erected on the traveling machine body 8 so as to be rotatable about the left and right axes. The output of the hydraulic motor 104 is supported on the drive shaft 107. The drive shaft 107 is configured to be rotationally driven by transmitting rotational power from the shaft via a belt winding transmission mechanism 111.
The hydraulic motor 104 is driven by pressure oil from a hydraulic pump 15 provided in the traveling body 5 and is driven / stopped by switching a switching valve operated by an operating means such as an operating lever provided in the traveling body 8. It is possible.

The front film guide 105 is positioned in front of the column pulling mechanism 7 and the upper end thereof is positioned above the column pulling mechanism 7 and is supported by a pair of support members 112 and 113.
One support member 112 is provided on the left and right sides of the horizontal frame member 52 of the main frame 43 of the main frame 43 of the support column pulling mechanism 7 and is supported by the support member 114 erected so as to protrude obliquely upward in the front direction. The front end is fixed to the front film guide 105 so as to protrude forward from the member 114.

The other support member 113 has a front end fixed to a connecting member that connects the left and right support members 112, and a rear end connected to a connecting member 68 that connects the front sides of the left and right upper support frames 66 of the column pulling mechanism 7. It is fixed.
The rear film guide 106 is provided between the upper ends of the left and right support members 114.

The multi-film 2 is guided by the front and rear film guides 105 and 106, and is wound around the winding body 103 through the support pull-out mechanism 7.
In order to collect the tunnel mulch in the tunnel mulch collecting machine 1 having the above-described configuration, the height of the column pulling mechanism 7 is adjusted so that the center side in the longitudinal direction of the column 3 is positioned at the height of the front lower end of the upper rotating body 73. The lower rotating body 74 is driven to rotate the upper and lower rotating bodies 73 and 74, and the traveling body 5 is advanced while the multi-film 2 is wound up by the multi-stripping mechanism 6.

  When the longitudinal center side of the column 3 is positioned below the front lower portion (front guide pulley 81) of the upper rotating body 73 and the lower rotating body 74, the lower rotating body 74 is viewed from the lower side on the front side. The center side in the longitudinal direction of the column 3 is hooked and pulled up by the distal end side of the pulling member 78 that moves upward, and the center side in the longitudinal direction of the column 3 is between the front lower portion of the upper rotating body 73 and the lower rotating body 74. The upper and lower rotations that are forcibly pushed in, are transported with the longitudinal center of the column 3 sandwiched between the upper and lower rotating bodies 73 and 74, and rotated at a peripheral speed faster than the peripheral speed of the drive wheels 10 of the traveling body 5. As the bodies 73 and 74 rotate, the column 3 is pulled up and pulled out at once.

Thereby, even if the driving wheel 10 of the traveling body 5 slips, the column 3 can be pulled out satisfactorily.
Since the support 3 is built in the field by elastically deforming a linear elastic bar in an arch shape, both sides of the support 3 are pulled up by elastic restoring force when pulled out. The jumping of the support column 3 is restricted by contacting both sides of the support column 3 in the longitudinal direction with the restriction rod 49.

The support column 3 conveyed to the upper part of the lower rotating body 74 by the upper and lower rotating bodies 73 and 74 and the pulling member 78 is released backward from between the rear upper part of the upper rotating body 73 and the lower rotating body 74. Then, it is guided along the guide means 48 to the column housing portion 47 and is stored in the column housing portion 47.
Since the guide means 48 is formed so as to be positioned rearward of the tip locus of the pulling member 78 on the lower side, the column 3 is moved from the pulling member 78 in the middle of being guided to the column accommodating portion 47. At this time, it is prevented by the connecting rod 101 that connects the left and right guide means 48 that the support 3 is rotated with the pulling member 78 and the support 3 is caught by the pulling member 78.

The connecting rod 101 constitutes a continuous rotation preventing means for preventing the column 3 from rotating with the pulling member 78.
In the present embodiment, when the longitudinal center side of the column 3 is displaced above the height position of the front lower end of the upper rotating body 73, the longitudinal center side of the column 3 is moved by the guide member 94. When guided between the front lower portion of the upper rotating body 73 and the lower rotating body 74, and the center side in the longitudinal direction of the support column 3 is displaced below the height position of the lower end of the front portion of the upper rotating body 73. However, the pulling member 78 reliably guides the center in the longitudinal direction of the column 3 between the front lower portion of the upper rotating body 73 and the lower rotating body 74.

  The pull-up member 78 is not necessarily required. The longitudinal center side of the support column 3 is positioned above the height position of the front lower end of the upper rotating body 73 and the guide member 94 is connected to the longitudinal center side of the support column 3. May be guided between the front lower portion of the upper rotator 73 and the lower rotator 74, and the circumferential surface of the lower rotator 74 is provided with irregularities, and the longitudinal center of the column 3 is formed by the irregularities. The side may be guided between the front lower portion of the upper rotating body 73 and the lower rotating body 74, and the center side in the longitudinal direction of the column 3 is connected to the front lower portion of the upper rotating body 73 and the lower rotating body 74. Other guide means for guiding between them may be provided.

  As in the past, the upper and lower rotating bodies that are sandwiched and pulled out are composed of endless belt-like conveyor belts, and the upper and lower conveyor belts are arranged in an inclined shape that moves upward as going backward. In this case, the longitudinal length of the upper and lower rotating bodies is required to some extent in accordance with the traveling speed of the traveling body. Although there is a problem that the clamping force is weakened, in the present embodiment, the upper and lower rotating bodies 73 and 74 are formed by connecting the lower rotating body 74 and the lower rotating body 74 with a circular shape when viewed from the side. The upper rotating body 73 is formed of an endless belt that is in close contact with the upper surface side from the front surface side, and the upper and lower rotating bodies 73 and 74 are rotated at a peripheral speed faster than the peripheral speed of the drive wheels 10 of the traveling body 5. It is configured to pull up the column 3 upward The distance in the front-rear direction of the contact portion between the upper rotating body 73 and the lower rotating body 74 can be shortened, the length in the front-rear direction can be made compact, and the column in the contact portion between the lower rotating body 74 and the upper rotating body 73 can be configured. 3 can be made substantially constant.

  In this embodiment, the tunnel multi-recovery machine 1 provided with the column pulling mechanism 7 that pulls the column 3 formed by bending the elastic rod-shaped column 3 in an arch shape and inserting it into the ground is exemplified. The drawing mechanism 7 may be employed in the tunnel multi-recovery machine 1 in which the arch-shaped support 3 bent into an arch shape and plastically deformed is inserted into the ground. It may be adopted in a column puller dedicated to pulling out.

It is a side view of a traveling body and a support | pillar extraction mechanism. It is a side view of a tunnel multi recovery machine. It is a front view of a tunnel multi recovery machine. It is a top view of a running body and a support | pillar extraction mechanism. It is a side view of a support | pillar extraction mechanism. It is a perspective view of a support | pillar extraction mechanism. (A) is a side view of a drawing part, (b) is a side sectional view of a part of an upper rotating body.

Explanation of symbols

3 prop 5 traveling body 10 rear wheel (drive wheel)
47 Supporting section 48 Guide means 73 Upper rotating body 78 Lifting member 74 Lower rotating body 100 Supporting guide surface 101 Connecting rod (continuous rotation preventing means)

Claims (4)

A traveling body (5), and upper and lower rotating bodies (73, 74) sandwiched between both ends of the longitudinal direction (3) with both ends in the length direction being inserted into the ground and having an arch shape. A strut pulling device for pulling out the strut (3) by rotating the upper and lower rotating bodies (73, 74) while running the traveling body (5),
The lower rotator (74) is formed of a rotator that is circular in a side view and rotates about the left-right axis, and the upper rotator (73) extends from the front surface side to the upper surface side of the lower rotator (74). The upper and lower rotating bodies (73, 74) are rotated at a peripheral speed faster than the peripheral speed of the drive wheels (10) of the traveling body (5) by rotating the upper and lower rotating bodies (73, 74). ), And a structure for pulling upward).   A lifting member (78) that protrudes radially outward from the peripheral surface of the lower rotating body (74) and rotates along with the lower rotating body (74) to hook the column (3) and lift upward is provided. The strut pulling device according to claim 1.   Provided on the rear side of the upper and lower rotating bodies (73, 74) is a supporting column accommodating section (47) for accommodating the pulled-out strut (3), and from the side of the lower rotating body (74) to the supporting column accommodating section (47). Guide means (48) is provided for guiding the strut (3) formed so as to reach the strut housing portion (47), and the strut guide surface (100) of the guide means (48) is provided as the strut (3). The column pulling device according to claim 2, wherein the column pulling device is configured to be separated from the pulling member (74) in the middle of guiding the column to the column accommodating portion (47).   The column pulling-out means according to claim 3, characterized in that the guide means (48) is provided with continuous rotation preventing means (101) for preventing the column (3) from rotating together with the pulling member (78). apparatus.

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