Swing-type riding top trimmer

Abstract

To provide a swing-type riding skirt cutter which is a riding-type skirt cutter, which can perform skirt cutting for a tea ridge at a constant level without reference to an operator's operation level, and which can properly finish the skirt cutting for the tea ridge.SOLUTION: A swing-type riding skirt cutter includes a machine body 110 that straddles a tea ridge T, right and left travel devices 120 that travel between the tea ridges T, and a cutting blade device 130 for cutting a skirt part ts of a tea plant when the machine body 110 travels. The cutting blade device 130 is mounted on the machine body 110 via a swing arm 140 capable of swinging in a horizontal direction. Sensor boards 161 and 162 abutting on the skirt part ts of the tea plant during the traveling of the machine body 110 are attached to the cutting blade device 130.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a riding-type bottom trimmer used for trimming the bottom of tea ridges. [Background technology]

[0002] In tea plantations, tea trees planted in ridges (tea furrows) are managed by trimming unnecessary branches and leaves from the base of the tea plants in preparation for tea picking. Figure 9 shows a tea furrow T and a base ts. Conventional base trimming machines are mainly walk-behind machines, which are operated by manually pushing a wheeled cutting blade (see, for example, Patent Documents 1 and 2). The operator holds the handle and moves the wheel between the narrow furrows, pruning the base of the tea plants that extend between the furrows with a cutting blade that moves up and down driven by an engine. However, walk-behind machines are labor-intensive because they require passing through the narrow furrows, and there are also problems with the finished base trimming, which varies depending on the operator's skill level.

[0003] In contrast to the above-mentioned walk-behind type, riding types are also known (see, for example, Patent Documents 3 and 4). Riding types have a mowing blade fixed to the riding machine, and while the riding machine travels between the furrows using a traveling device, it uses the mowing blade fixed to the machine to mow the bottoms of the tea plants. Riding types can perform bottom mowing more efficiently than walking types, but they must be driven straight between the furrows, and because the machine is large, they are more difficult to operate than walking types, and if the machine shifts left or right, the finished bottoms of the tea plants will become uneven. Furthermore, with riding types, the mounting position of the mowing blade needs to be adjusted each time because the width and spacing of the tea furrows vary depending on the planting and growth conditions of the tea plants. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Publication number 03-027387 [Patent Document 2] Japanese Patent Application Publication No. 11-137040 [Patent Document 3] Japanese Patent Application Laid-Open No. 2002-300808 [Patent Document 4] Japanese Patent Application Laid-Open No. 2011-200194 Summary of the Invention [Problem to be solved by the invention]

[0005] In recent years, the environment surrounding tea plantations has been tough, with farmers aging. On the other hand, tea plantations have become larger in scale, and labor-saving machines have been used for plucking and management work, and some work is being automated and unmanned.

[0006] If the finish of the tea ridge bottom trimming changes or becomes uneven depending on the level of operation by the worker, it also affects the machines that travel between the rows during picking and maintenance work, leading to reduced yields and lower quality during picking work, and inconsistent spraying of pesticides during maintenance work. However, conventional walking and riding types were unable to address these issues.

[0007] To provide a riding bottom trimmer that has been made in view of the above-mentioned problems and that can trim the bottoms of tea ridges at a constant level regardless of the operator's operation level and can perform good finishing of the bottom trimming of tea ridges. [Means for solving the problem]

[0008] In order to solve the above problems, the present invention provides a swing-type riding skirt trimmer, which comprises: The machine comprises a body that straddles the tea ridges, a pair of traveling devices that travel between the tea ridges, and a cutting blade device that cuts the bottoms of the tea plants while the machine is traveling, and the cutting blade device is attached to the machine via a swing arm that can swing left and right relative to the traveling direction of the machine, the swing arm has two arm bodies that are parallel to each other and extend in the front-rear direction of the machine body, and these two arm bodies are swingable in the left-right direction with respect to the traveling direction of the machine body; The cutting blade device includes a drive motor, and a cutting blade body that is cantilevered via a support pin at the tip of the two arm bodies of the swing arm and can move in parallel to the left and right by swinging the swing arm. , The blade is provided with a first clipper blade attached to one side of the blade body, which is driven by the drive motor to move up and down to cut the bottoms of the tea plants on one side of the furrows, and a second clipper blade attached to the other side of the blade body, which is driven by the drive motor to move up and down to cut the bottoms of the tea plants on the other side of the furrows, The cutting blade device is provided with a first movable sensor plate that contacts the bottom of one of the tea plants between the furrows when the machine is moving, and a second movable sensor plate that contacts the bottom of the other of the tea plants between the furrows, and these first and second sensor plates are attached in a direction that widens in a V-shape as they go rearward in a plan view, and the first and second sensor plates are constantly biased by biasing means when the machine is moving, with the first sensor plate facing the bottom of one of the tea plants and the second sensor plate facing the bottom of the other tea plant. The main feature is that [Effects of the Invention]

[0014] As described above, the oscillating riding bottom trimming machine of the present invention comprises a body that straddles the tea ridges, a pair of traveling devices that travel between the tea ridges, and a cutting blade device that cuts the bottoms of the tea plants as the body travels, and the cutting blade device is attached to the body via a swinging arm that can swing left and right relative to the direction of travel of the body.Therefore, if the orientation or position of the body shifts left or right relative to the direction of the tea ridges as the body travels, the action of the swinging arm will cause the cutting blade device to maintain its original bottom trimming position, which means that the bottom trimming of the tea ridges can be carried out at a consistent level regardless of the operator's operating level, resulting in the effect of successfully finishing the bottom trimming of the tea ridges. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is an overall perspective view of a swing-type riding-type skirt trimmer; [Figure 2] Rear view of a swing-type riding skirt trimmer; [Figure 3] 1 is a plan view of a swing-type riding-type skirting machine; [Figure 4] FIG. 2 is a perspective view of a main part showing a state in which a swing arm and a cutting blade device are attached; [Figure 5] 10 is a side view of a main part showing the mounting state of the swing arm and the cutting blade device; [Figure 6] FIG. 2 is a plan view of a main part showing a state in which a swing arm and a cutting blade device are attached; [Figure 7] 10 is an explanatory diagram showing the movement of the swing arm; [Figure 8] An explanatory diagram showing the movement of the sensing plate; [Figure 9] FIG. 1 is a diagram showing a cross section of a tea ridge. BEST MODE FOR CARRYING OUT THE INVENTION

[0016] 1 to 9 show one embodiment of a rocking riding bottom trimmer according to the present invention, and in these figures, the reference numeral 100 denotes a rocking riding bottom trimmer (hereinafter referred to as a bottom trimmer), and the reference numeral T denotes a tea ridge.

[0017] As shown in Fig. 9, the bottom trimmer 100 is a riding machine for trimming the bottoms (sides) ts of tea plants in tea furrows T in a tea plantation, and as shown in Figs. 1 to 3, it comprises a gate-shaped machine body 110 that is positioned so as to straddle the tea furrows T, and left and right traveling devices 120 that are attached to the bottom of the machine body 110. Although not shown, the left and right traveling devices 120 each have front and rear wheels and crawlers wound around the wheels, and are driven by an engine 111 to travel at a low speed along the tea furrows T and between the furrows, operated by an operator.

[0018] The gate-shaped machine body 110 is equipped with an engine 111 and an operator's seat 112, and the operator can operate a handle 113 for traveling while seated in the operator's seat 112, as well as an operating lever 114 for bottom trimming and an operating lever 115 for height adjustment.

[0019] A pair of left and right cutting blade devices 130 are attached to the rear of the machine body 110 via a swing arm 140. As shown in Figures 4 to 6, the cutting blade device 130 is U-shaped in plan view and includes a cutting blade main body 131 extending in the height direction, and left and right clipper blades 132, 132 attached facing forward on both sides of the cutting blade main body 131. The cutting blade main body 131 is supported in a cantilevered manner at the tips of two arm main bodies 141, 141 that make up the swing arm 140.

[0020] A drive motor 133 is mounted on the top of the cutting blade body 131, and the rotational drive force from the drive motor 133 is transmitted to two left and right transmission cases 135, 135 via a connection part 134. An eccentric cam and a driven member (neither of which is shown) are arranged inside each transmission case 135, and the rotational force from the drive motor 133 is converted into up and down reciprocating motion of the driven member by the movement of the eccentric cam, and the left and right clipper blades 132, 132 are moved up and down reciprocatingly via the driven member.

[0021] The left and right clipper blades 132, 132 each consist of a pair of blades, and they reciprocate in opposite directions while sliding up and down. This allows the left and right clipper blades 132, 132 to trim unnecessary branches and leaves from the bottom portion ts of the tea ridges T, giving the bottom portion ts a neat finish. A weight 136 is attached to the opposite side of the drive motor 133.

[0022] The swinging arm 140 swings to correct the position of the cutting blade device 130 to return it to its original cutting position when the direction of the cutting machine body 110 shifts left or right relative to the direction (longitudinal direction) of the tea ridges T while the machine body 110 is traveling, or when the position of the machine body 110 shifts left or right, and is provided with two arm bodies 141, 141, one on the left and one on the right, which are parallel to each other and extend in the front-to-rear direction. Bearings 142, 142 are provided at the base ends of the arm bodies 141, 141, and the bearings 142, 142 are rotatably connected between the top plate and the bottom plate of a support body 144 via support pins 143, 143.

[0023] Bearings 145 are provided at the tips of the arm bodies 141, and the bearings 145 are rotatably connected via support pins 146 between the top and bottom plates of a support 137 fixed to the inner surface of the cutting blade body 131 of the cutting blade device 130. As a result, the cutting blade device 130 is cantilevered relative to the swing arm 140, and can move in parallel left and right by swinging the swing arm 140 while maintaining the orientation of the left and right clipper blades 132 constant (facing forward), as shown in FIG.

[0024] A fixing means for fixing (preventing swinging) the swing arm 140 is provided on the top plate of the support body 144 of the swing arm 140. As shown in Fig. 3, this fixing means includes a cylindrical guide portion 147 that is cantilevered on the top plate of the support body 144 and extends rearward, and a fixing pin 148 that is guided back and forth within the guide portion 147. The swing arm 140 is fixed by engaging the fixing pin 148 with a fixing hole in the center of a fixing plate 138 (see Fig. 4) provided on the upper front surface of the cutting blade body 131, and the swing arm 140 can be swung by removing (releasing) the fixing pin 148 from the fixing hole.

[0025] A height adjustment mechanism 150 for adjusting the height of the cutting blade device 130 is provided between the support body 144 of the swing arm 140 and the machine body 110. The height adjustment mechanism 150 includes a support member 151 that has a link mechanism and extends vertically to fixedly support the support body 144, two support arms 152, 153 that have base ends rotatably connected to the rear of the machine body 110 and free ends rotatably connected to the upper and lower sides of the support member 151 and extend parallel to each other in a side view, and a telescopic cylinder 154 that is connected between the rear of the machine body 110 and the support arm 152 and moves the two support arms 152, 153 in parallel up and down directions. The height of the swing arm 140 and the cutting blade device 130 from the ground can be adjusted by operating the telescopic cylinder 154.

[0026] A pair of left and right sensing plates 161, 162 that assist the swinging of the swing arm 140 are attached to the rear of the blade body 131 of the blade device 130 so that they widen in a V-shape as they go rearward in a plan view, as shown in Figures 6 and 8.

[0027] The sensing plates 161, 162 are constantly in contact with the bottoms (side surfaces) ts of the brown ridges T on both sides of the furrows when the machine body 110 travels between the furrows, thereby assisting the swinging of the swinging arm 140 and acting to keep the position (widthwise position) of the cutting blade device 130 in the furrows, i.e., the positions of the left and right clipper blades 132, 132, constant at all times. The sensing plates 161, 162 are movable and are supported rotatably and outwardly on both side plates of the cutting blade body 131 via upper and lower pivoting support parts 163, and each has a sensing part 164 that comes into contact with the bottoms ts of the brown ridges T.

[0028] Compared to fixed types, movable sensing plates 161, 162 have less resistance when in contact with the bottom ts of the tea ridges T, and absorb the resistance from the bottom ts of the tea ridges T when the machine body 110 is traveling, smoothing the movement of the swing arm 140 and also smoothing the traveling of the machine body 110. Even if there are missing stalks between the front and rear tea trees in the tea ridges T, the movable sensing plates 161, 162 absorb the missing stalks, and the bottom trimming operation when the machine body 110 is traveling is not affected.

[0029] An auxiliary mechanism 166 is provided on the inner surface of the sensing plates 161, 162 via mounting parts 165, which causes the movement of the sensing plates 161, 162 to follow changes in the bottom width (spacing) of the brown ridges T on both sides of the inter-ridge gap. As shown in Fig. 6, this auxiliary mechanism 166 includes a pair of left and right first connecting members 167, 167 having one end rotatably connected to the left and right mounting parts 165, 165, and a pair of left and right second connecting members 168, 168 having one end rotatably connected near the other end of the first connecting members 167, 167. The other ends of the second connecting members 168, 168 are rotatably connected to a support plate 138 fixed to the center of the back surface of the cutting blade body 131.

[0030] The auxiliary mechanism 166 has a pair of left and right spring members 169, 169 interposed in an extended state between the middle of the left and right second connecting members 168, 168 and the back surface of the cutting blade body 131 on both sides of the support plate 138, and is designed to constantly urge the left and right sensing plates 161, 162 against the bottom ts of the lateral brown ridges T via the left and right second connecting members 168, 168 and the left and right first connecting members 167, 167.

[0031] Therefore, when the bottom width (spacing) on ​​both sides of the furrows is narrow, the left and right sensing plates 161, 162 rotate in the closing direction as shown by the solid lines in Figure 8, and are constantly in contact with the bottoms of the tea ridges T on both sides; when the bottom width (spacing) on ​​both sides of the furrows is wide, the left and right sensing plates 161, 162 rotate in the opening direction as shown by the dotted lines in Figure 8, and are constantly in contact with the bottoms of the tea ridges T on both sides, and the auxiliary mechanism 166 operates to cause the movement of the sensing plates 161, 162 to follow changes in the bottom width (spacing) of the tea ridges T on both sides of the furrows.

[0032] Next, the bottom trimming operation of the tea ridges T using the bottom trimmer 100 configured as described above will be described.

[0033] First, the body 110 of the bottom trimmer 100 is positioned on the tea ridge T so as to straddle the ridge T, and the cutting blade devices 130, 130 at the rear of the body are aligned between the ridges (see Figure 3). Then, an operator in the driver's seat 112 operates the height adjustment control lever 115 to adjust the height of the cutting blade devices 130, 130. The left and right swing arms 140 are fixed in place by their respective fixing pins 148.

[0034] Next, the operator in the driver's seat 112 operates the bottom trimming lever 114 to activate the left and right cutting blade devices 130, 130, and moves the traveling device 120 of the bottom trimmer 100 into the furrow. After entry, when the rear sensor plates 161, 162 are activated (detecting the bottoms ts on both sides of the furrow), the left and right fixing pins 148 are released, allowing the left and right swing arms 140, 140 to swing.

[0035] In this state, when the operator in the driver's seat 112 operates the handle 113 to move the machine body 110 forward at a low speed (2 to 4 km / h), the left and right cutting blade devices 130, 130 at the rear of the machine body 110 begin bottom cutting (pruning) of the bottom parts ts located on both sides of the furrows.

[0036] The left and right cutting blade devices 130, 130 transmit the rotational driving force from the drive motor 133 to two transmission cases 135, 135, and are converted into up and down reciprocating motion within the transmission cases 135, 135, causing the left and right clipper blades 132, 132 to reciprocate up and down, respectively, so that the left and right clipper blades 132, 132 cut off unnecessary branches and leaves at the bottom parts ts located on both sides of the furrows, giving the bottom parts ts a neat finish.

[0037] During the bottom trimming operation, the left and right sensing plates 161, 162 are equally urged by the spring members 169, 169 to the bottoms (sides) ts of the tea furrows T on both sides, so that while the machine body 110 is traveling, the position of the cutting blade devices 130, 130 is stable in the center of the furrows, and the bottoms ts on both sides are trimmed straight.

[0038] While the machine body 110 is traveling, it is difficult for the operator to operate the handle 113 to keep the machine body 110 traveling straight and parallel to the tea ridge T, and the orientation of the machine body 110 may shift left or right along the way relative to the tea ridge T, or the machine body 110 may shift left or right from the center of the tea ridge T. If the orientation of the machine body 110 shifts left or right along the way relative to the tea ridge T, the left and right rear swing arms 140, 140 are assisted by the sensing plates 161, 162, respectively, and swing in the opposite direction to the machine body 110, correcting the positions of the cutting blade devices 130, 130, i.e., the positions of the clipper blades 132, 132, so that the original bottom cutting position is maintained.

[0039] For example, when the machine body 110 faces left with respect to the brown ridge T and the entire machine body 110 moves to the left, the rear swing arm 140 swings to the right, correcting the bottom cutting positions of the cutting blade devices 130, 130 and maintaining the original bottom cutting positions (if the cutting blade devices 130 are fixedly attached to the machine body 110, when the machine body 110 moves to the left with respect to the brown ridge T, the rear cutting blade device 130 will deeply cut the bottom of the left-side brown ridge, while leaving the bottom of the right-side brown ridge uncut). Also, when the machine body 110 faces right with respect to the brown ridge T and the entire machine body 110 moves to the right, the rear swing arm 140 swings to the left, correcting the bottom cutting positions of the cutting blade devices 130, 130 and maintaining the original bottom cutting positions.

[0040] When the swinging arm 140 swings, the two arm bodies 141, 141 that are parallel to each other and extend back and forth move in parallel (see Figure 7), so the orientation of the left and right cutting blade devices 130, i.e., the orientation of the two left and right clipper blades 132, is kept constant, and bottom trimming can be performed so that the cutting surface is straight and flush. The swinging arm 140 can swing with just one arm body, but by using two arm bodies that are parallel to each other, the effects of getting caught in the branches at the bottom of the tea plant and fluctuations in the cutting load are minimized, making the bottom trimming work more stable.

[0041] While the machine body 110 is traveling, the sensor plates 161, 162 are constantly in contact with and sense the bottoms of the tea furrows on both sides. Tea trees are planted at regular intervals along the tea furrows T, but if there are any missing stalks, the movable sensor plates 161, 162 will follow the missing stalks, minimizing the effect that the missing stalks have on the swinging arm 140, allowing the cutting blade devices 130, 130 to stably and neatly cut the bottoms ts of the tea furrows T.

[0042] When the machine body 110 reaches the end of the tea ridge T and the bottom trimming work on both sides of the furrow is completed, the operator operates the operation lever 114 to stop the operation of each cutting blade device 130, rotates the machine body 110, moves to an adjacent tea ridge T where bottom trimming work is not being performed, and positions the machine body 110. Then, following the above procedure, the machine body 110 is again moved forward at a low speed along the tea ridge T, while the left and right rear cutting blade devices 130 are operated to continue the bottom trimming work on both sides of the furrow.

[0043] In this case as well, if the orientation of the machine body 110 deviates left or right relative to the direction of the tea ridge T while the machine body 110 is moving forward, the swinging arm 140 attached to the rear will swing to the opposite side of the machine body 110, i.e., toward the center, with the assistance of the sensing plates 161, 162, thereby maintaining a constant bottom trimming position for the tea ridge T. Furthermore, if the position of the machine body 110 deviates left or right relative to the center of the tea ridge T, the swinging arm 140 at the rear will swing to the opposite side of the machine body 110, i.e., toward the center of the tea ridge T, thereby maintaining a constant bottom trimming position for the tea ridge T.

[0044] In this way, even if the orientation of the machine body 110 shifts left or right while the machine body 110 is moving, or even if the position of the machine body 110 shifts left or right, the rear swing arm 140 swings each time to the opposite side to the orientation of the machine body 110, i.e., toward the center of the furrow, thereby always maintaining a constant position of the cutting blade device 130 in the furrow and allowing the bottoms on both sides of the furrow to be neatly finished.

[0045] The bottom trimmer 100 of this embodiment is also effective in automatic operation. The present applicant previously proposed a control structure for an automatically traveling machine (Japanese Patent Laid-Open Publication No. 11-168947). The control structure has a pinion attached to the rotating shaft of the travel handle mounted on the body of the machine, which can be rotated by a rack that is moved back and forth by a hydraulic cylinder, and sensor plates that detect both sides of the tea plants in the ridges are attached to the left and right front of the body.When the machine travels across the ridges, when the machine turns to the right, the resistance difference of the variable resistor based on the rotation angle of the left and right sensor plates reaches a predetermined value, the position of the electromagnetic switch valve is changed, the piston rod of the hydraulic cylinder and the rack move backward, the pinion rotates counterclockwise, the travel handle also rotates counterclockwise, and the machine returns to its original straight-ahead position.When the machine turns to the left, the resistance difference of the variable resistor based on the rotation angle of the left and right sensor plates reaches a predetermined value, the position of the electromagnetic switch valve is changed, the piston rod of the hydraulic cylinder and the rack move forward, the pinion rotates clockwise, the travel handle also rotates clockwise, and the machine returns to its original straight-ahead position.

[0046] The bottom trimmer 100 of this embodiment demonstrates its power when applied to the above-mentioned automatically operable machine, in that when the machine body 110 turns to the right, the swing arm 140 swings toward the center of the furrow, maintaining a constant position for the cutting blade device 130 in the furrow, and when the machine body 110 turns to the left, the swing arm 140 swings again toward the center of the furrow, maintaining a constant position for the cutting blade device 130 in the furrow. By maintaining a constant position for the cutting blade device 130 in the furrow while the machine body 110 is traveling, the bottom of the brown furrow T is neatly trimmed straight from the start to the end of the furrow, resulting in a finished look.

[0047] By pruning the bottom of the tea ridges T neatly and straight from the beginning to the end of the ridge, when using a riding tea picking machine that employs the above-mentioned automatic driving control structure to pick first-season tea, second-season tea, etc., the direction of the machine while moving is stable compared to when the bottom of the tea ridges T is finished with an uneven surface, and picking work can be carried out with good quality (more tea leaves, fewer branches) and a stable yield (the machine is less likely to sway from side to side, resulting in a stable yield).

[0048] In the skirt trimmer 100 of this embodiment, the cutting blade device 130 is attached to the rear of the machine body 110, but the cutting blade device 130 can also be attached to the front of the machine body 110. In this case, the attachment orientation of the cutting blade device 130, swing arm 140, and sensor plates 161, 162 is the same as the attachment orientation in the above embodiment, and an extension arm extending forward can be placed between the swing arm 140 and the height adjustment mechanism 150 located at the front of the machine body 110, with the swing arm 140 supported at the front of the extension arm.

[0049] Thus, by using the oscillating riding bottom trimmer of the present invention, it is possible to efficiently trim the bottoms of tea ridges in tea fields while finishing the bottoms of the ridges with a smooth, even surface. It also reduces the workload of farmers, thereby enabling high-quality picking and a stable yield.

[0050] Furthermore, by using the oscillating riding bottom trimmer of the present invention, even if the width of the tea ridges or the spacing between the ridges varies depending on the planting and growth conditions of the tea trees, there is no need to adjust the attachment position of the cutting blade each time, thereby improving usability. [Industrial Applicability]

[0051] The present invention can be used as a riding bottom trimmer that performs bottom trimming work on tea ridges while traveling along the ridges in a tea plantation. [Explanation of symbols]

[0052] 100 Hemming machine 110 aircraft 111 Engine 112 Driver's seat 113 Handle 114 Working lever 115 Operating lever 120 Running gear 130 Cutting blade device 131 Cutting blade body 132 Clipper blade 133 Drive motor 134 Connection 135 Transmission case 136 Weight 137,144 Support 138 Support plate 140 Swing Arm 141 Arm body 142,145 Bearing section 143,146 Support pin 147 Guide section 148 fixing pin 150 Height adjustment mechanism 151 Support member 152,153 Support arm 154 Telescopic Cylinder 161,162 sensing plate 163 Rotation support part 164 Sensing part 165 Mounting part 166 Auxiliary mechanism 167 First connecting member 168 Second connecting member 169 Spring members T Tea ridge ts hem

Claims

[Claim 1] The machine comprises a body that straddles the tea ridges, a pair of traveling devices that travel between the tea ridges, and a cutting blade device that cuts the bottoms of the tea plants while the machine is traveling, and the cutting blade device is attached to the machine via a swing arm that can swing left and right relative to the traveling direction of the machine, the swing arm has two arm bodies that are parallel to each other and extend in the front-rear direction of the machine body, and these two arm bodies are swingable in the left-right direction with respect to the traveling direction of the machine body; The cutting blade device comprises a drive motor, a cutting blade body that is cantilevered via support pins at the tip ends of the two arm bodies of the swing arm and can move in parallel left and right as the swing arm swings, a first clipper blade that is attached to one side of the cutting blade body and moves up and down reciprocally as driven by the drive motor to cut the bottom of the tea plants on one side of the furrow, and a second clipper blade that is attached to the other side of the cutting blade body and moves up and down reciprocally as driven by the drive motor to cut the bottom of the tea plants on the other side of the furrow, A movable first sensing plate that comes into contact with the bottom of one of the tea plants between the furrows when the machine is moving, and a movable second sensing plate that comes into contact with the bottom of the other of the tea plants between the furrows are attached to the cutting blade device in a direction that widens in a V-shape as it goes rearward in a plan view, and the first and second sensing plates are constantly urged by urging means when the machine is moving, with the first sensing plate facing the bottom of one of the tea plants and the second sensing plate facing the bottom of the other tea plant. A swing-type riding skirt trimmer characterized by:

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