JP2002058352A - Control unit for rotary brush - Google Patents

Abstract

PROBLEM TO BE SOLVED: To expand the modification range in puddling depth and increase the modification accuracy in the rotary brush. SOLUTION: Above the conveying bed 1 for conveying the seedling vessels A, are set a rotary brush 3 axially connected to the top edges of a pair of the fitting arms 7, a couple of drafting rods 18 are attached to both ends of the brush rotary shaft 6 for the rotary brush 3. Individual drafting rods 18 are liftably attached to the controlling screw shaft 19 equipped with the dial 22 and the left and right controlling screw shafts 19 are connected by the linking shaft 21. A pair of left and right frame side plates 16 are set to the conveying bed 1 and a plurality of the connection steps 26 that support the connecting shaft 21 by connecting from the upper part and has different heights are arranged in the longitudinal direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary brush adjusting device.

[0002]

2. Description of the Related Art In Japanese Utility Model Publication No. 7-41297, a pair of traction rods are attached to both ends of a rotary shaft of a rotary brush, and each traction rod is connected by a connecting shaft. An up / down moving plate having a switching engagement step is provided inside a window hole of a pair of left and right frame side plates provided on the transfer table, and the up / down moving plate is provided on an adjusting screw shaft provided on the frame side plate. It describes a configuration that can be mounted up and down freely.

[0003]

In the above-mentioned known example, a vertically movable plate having a switching engagement step is provided inside a window hole, and the vertically movable plate is suspended by an adjusting screw shaft so as to be adjustable in height. The connecting shaft is inserted through the window to engage with the switching step inside the window, and the space for providing the switching step is narrow due to the restriction of the window. There is. That is, in the known example, since the up-and-down moving plate having the switching engagement step portion is moved up and down, the space for forming is narrow. In the present invention, the fine adjustment mechanism is devised to remove the restriction of the window hole, and the range of change is widened.

[0004]

The object of the present invention is to increase the range of change of the scraping depth and to improve the change accuracy.

[0005]

According to the present invention, there is provided a rotating base mounted on a tip of a pair of right and left mounting arms 7 rotatably provided on the transfer table 1 above the transfer table 1 for transferring the seedling raising container A. The brush 3 is provided, and a pair of traction rods 18 are attached to both ends of the brush rotating shaft 6 of the rotating brush 3. Each traction rod 18 is attached to an adjusting screw shaft 19 having a dial 22 so as to be vertically movable. Are connected by a connection shaft 21,
The transfer table 1 is provided with a pair of left and right frame side plates 16,
Switching engagement step portions 26 having different heights for supporting the connection shaft 21 by being engaged with the upper portion of the frame side plate 16 from above.
Are a plurality of rotary brush adjusting devices provided in the front-rear direction. According to the present invention, the brush rotating shaft 6 is configured to move in an arc around two rotating shafts 8 and a connecting shaft 21 for attaching the mounting arm 7 to the transfer table 1. Of these, the center switching engagement step 26a where the brush rotating shaft 6 and the connection shaft 21 are vertically located is used as a reference step, and the lower and upper sides of the center switching engagement step 26a are alternately lowered in order. This is a rotary brush adjusting device in which the switching engagement step portions 26 are arranged side by side.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
Is a transfer table for transferring the seedling container A, 2 is a transfer roll for transferring the seedling container A provided on the transfer table 1, 3 is a rotating brush provided above the transfer table 1, and the rotating brush 3 is the rotating seedling container A leveling is performed while scraping a predetermined amount of the floor soil 4 that has been additionally supplied to A. The rotating brush 3 has both ends of a brush rotating shaft 6 mounted on a pair of left and right mounting arms 7, and a base of the mounting arm 7 is rotatably mounted on a rotating shaft 8 of the transfer roll 2. Is transmitted to the brush rotating shaft 6 by a chain (not shown) and the gear 9 to drive and rotate.

The transfer table 1 has the rotating brush 3
Height adjustment device 15 is provided. The height adjusting device 15 is provided with a pair of left and right frame side plates 16 on the transfer table 1, and an insertion hole 17 through which the brush rotating shaft 6 is inserted into the frame side plate 16.
And the insertion hole 17 is formed in an arc shape centering on the rotating shaft 8 to allow the rotating brush 3 to move up and down in accordance with the seedling growing containers A having different heights. Frame side plate 16
A lower portion of a traction rod 18 is attached to each end of the brush rotating shaft 6 projecting more laterally, and a lower portion of an adjusting screw shaft 19 is screwed to the upper portion of the traction rod 18. Reference numeral 20 denotes a screwing nut welded and fixed to the traction rod 18, and the adjusting screw shaft 1
When the rotation of 9 is performed, the traction rod 18 moves up and down with respect to the adjusting screw shaft 19.

The upper portion of the adjusting screw shaft 19 is rotatably mounted on the connecting shaft 21 in the left-right direction. Reference numeral 22 denotes a dial provided on the upper end of the adjusting screw shaft 19, and reference numeral 23 denotes an engaging nut provided on the adjusting screw shaft 19 below the connecting shaft 21.
When the dial 22 is lifted by 3, the connecting shaft 21 moves upward. A locking nut 24 is screwed to the adjusting screw shaft 19 below the screwing nut 20. A spring 25 is provided between the towing rod 18 and a fixed portion such as the transfer table 1 so as to constantly urge the towing rod 18 to be pulled downward.

On the upper edge of the frame side plate 16, a plurality of switching engagement steps 26 for engaging the connecting shaft 21 are formed on a plurality of arcs.
Is selectively engaged. In this case, of the switching engagement step portions 26, the central switching engagement step portion 26a in which the connecting shaft 21 is located vertically above the brush rotating shaft 6 is used as a reference step portion, and in this state, the left and right adjusting screws are used. By rotating the shaft 19, the lower end of the rotating brush 3 is brought into contact with the upper surface of the front wall 27 of the seedling raising container A, the scraping amount is set to "zero", and the center switching engagement step 2
A lower switching engagement step portion 26 is formed on the front and rear sides of the rear end of the rotating brush 3 so that the lower end of the rotating brush 3 is engaged with the connection shaft 21. 27, a predetermined amount of floor soil is scraped off from the upper surface.

When the switching step 26 of the embodiment is formed so as to be alternately lower on the front and rear sides with respect to the center switching step 26a, the accuracy of setting the scraping amount is improved. It is suitable. That is, the brush rotating shaft 6 moves on an arc line centered on the rotating shaft 8 and on the arc line centered on the connecting shaft 21, so that the first brush is adjusted to fit the seedling growing containers A having different heights. If the position of the rotating shaft 6 is changed, the amount of descent with respect to the central switching engagement step 26a when engaging with each switching engagement step 26 will not be constant, The accuracy of setting the scraping amount is improved by forming the switching engagement steps 26 so as to be alternately lower on the front and rear sides with respect to the engagement steps 26a. 26b is a first switching engagement step, 26c
Is a second switching engagement step, 26d is a third switching engagement step,
Reference numeral 26e denotes a fourth switching engagement step, which lowers the height of the rotating brush 3 so that the scraping amount increases in order.

A brush cover 30 is provided on the rear side of the rotating brush 3, and the brush cover 30 is positioned below the connecting shaft 21 at a predetermined interval, and is connected by inserting an operator's hand. The shaft 21 can be lifted. The above configuration is optional, and the height adjustment device 15
Raises the dial 22 or the connecting shaft 21 and selectively engages the connecting shaft 21 with the switching step 26 to change the scraping amount. It suffices if the amount can be finely adjusted.

[0012]

Next, the operation will be described. A rotary brush 3 is provided above the transfer table 1 for transferring the seedling raising container A, and the rotary brush 3 is mounted on the tip of a pair of left and right mounting arms 7. The mounting arm 7 is rotatably mounted on the transfer table 1 and rotated. The brush 3 includes a traction rod 18 attached to the brush rotating shaft 6 and a traction rod 18.
An adjusting screw shaft 19 having a dial 22 for raising and lowering
The height adjusting device 15 including a connecting shaft 21 connecting the left and right adjusting screw shafts 19 and a switching engaging step 26 for engaging and supporting the connecting shaft 21 formed on the frame side plate 16 provided on the transfer table 1 is provided. Since the connecting shaft 21 is engaged with any of the switching engagement step portions 26, the left and right adjusting screw shafts 19 are provided.
And rotate the lower end of the rotating brush 3 to the front wall 2 of the seedling growing container A.
7 and make the scraping amount "zero". Then,
When the user holds the dial 22 or the connecting shaft 21 and lifts it upward to engage the connecting shaft 21 with another switching engaging step 26 lower than the switching engaging step 26, the first switching engaging step The tow rod 18 is lowered by the height of the portion 26 and the next switching engagement step portion 26, whereby the brush rotating shaft 6 is also lowered, and the rotating brush 3 is set at a predetermined height.

In this state, when the seedling container A supplied with the floor soil is supplied to the transfer table 1, the seedling container A is transferred by the transfer roll 2, and is scraped off by a predetermined amount when passing below the rotating brush 3. When the scraping amount is changed, when the connecting shaft 21 is engaged with another switching engaging step 26 of the plurality of switching engaging steps 26, the connecting shaft 21 is thereby adjusted with the adjusting screw. The shaft 19 is moved up and down, the adjusting screw shaft 19 moves up and down the traction rod 18, and the traction rod 18 moves the brush rotating shaft 6 up and down to change the height of the rotating brush 3 and change the scraping amount.

When the seedling raising containers A having different heights are used, any one of the switching engagement step portions 2 is used as described above.
6 with the connecting shaft 21 engaged, the right and left adjusting screw shafts 19 are rotated to bring the lower end of the rotating brush 3 into contact with the upper surface of the front wall 27 of the seedling raising container A, and the scraping amount is set to “zero”. Then, holding the dial 22 or the connecting shaft 21 and lifting it upward, the connecting shaft 21 is engaged with another switching engaging step 26 lower than the switching engaging step 26, and the rotary brush 3 is rotated. Is set to a predetermined height. In the above case, the switching engagement step 26
Are arranged on the upper edge of the pair of left and right frame side plates 16 provided on the transfer table 1 in a circular arc, so that the switching engagement step 2
The space for forming 6 is increased, and the change range can be increased accordingly.

That is, since the switching step 26 is provided on the fixed frame side plate 16, the space can be widened. Thus, the brush rotation shaft 6 moves on an arc line centered on the rotation shaft 8 and on an arc line centered on the connection shaft 21. Therefore, when the brush rotation shaft 6 is adjusted to the seedling raising container A having a different height, the brush rotation shaft 6 becomes the first. The position of the brush rotating shaft 6 changes up and down, so that the step of each switching engagement step 26 and the descending amount of the brush rotating shaft 6 are not proportional. Therefore, the switching engagement step 2
6, the center switching engagement step 26a in which the brush rotation shaft 6 and the connection shaft 21 are vertically located is a reference step,
In this state, the left and right adjusting screw shafts 19 are rotated to bring the lower end of the rotating brush 3 into contact with the upper surface of the front wall front wall 27 of the seedling raising container A, and the scraping amount is adjusted to "zero". A central switching engagement step 2 is provided on the front and rear sides of the switching engagement step 26a.
The switching engagement step portions 26 which are lower in order than 6a are formed.

Therefore, the lower end of the rotating brush 3 is engaged with the switching engagement step 26 which is lower than the "zero setting" center switching engagement step 26a, so that the front wall 27 of the seedling raising container A is closed.
A predetermined amount of floor soil is scraped off from the upper surface. In this case, the switching engagement step 26 of the embodiment is formed so as to be alternately lower on the front and rear sides with respect to the center switching engagement step 26a. A change in the amount of movement of the brush rotating shaft 6 that moves in an arc around two points is minimized, and the accuracy of setting the scraping amount is improved. That is,
As an example, when forming the four-stage switching step 26 of 7 mm, 10 mm, 12 mm, and 15 mm, 15 mm from the rear side (fourth switching step 26 b), 12 mm (third switching). Engagement step 26b), 0 mm (center switching engagement step 26)
a), 7 mm (first switching step 26 b), and 10 mm (second switching step 26 b), so that the displacement between the switching step 26 is small. Become.

Incidentally, when viewed from the side, 15 mm (fourth switching step 26b), 10 mm (second switching step 26b), 0 mm
mm (center switching engagement step 26a), 7mm (first switching engagement step 26b), 12mm (third switching engagement step 26b)
May be formed in this order. Since the towing rod 18 is constantly being pulled downward by the spring 25, when the adjusting screw shaft 19 is rotated to lower the towing rod 18, the towing rod 18 is lowered by the elastic force of the spring 25, and conversely, the adjustment is performed. When the screw shaft 19 is rotated in the reverse direction, the traction rod 18 is
Move up against the elasticity of 5. In this case, the towing rod 1
Since the lower part of the adjusting screw shaft 19 is screwed to the upper part of the shaft 8, when the dial 22 is rotated, the traction rod 18 moves up and down with respect to the adjusting screw shaft 19.

The adjusting screw shaft 19 below the connecting shaft 21
Is provided with an engaging nut 23, so that the dial 22
Is lifted, the connecting shaft 21 is moved upward by the engaging nut 23, so that not only the connecting shaft 21 but also the right and left dials 22
Also, the connection shaft 21 can be lifted up and engaged with another switching engagement step 26 to change the scraping amount of the rotating brush 3. Further, since the locking nut 24 is screwed to the adjusting screw shaft 19 below the screwing nut 20 fixed to the tow rod 18, once adjusted, no deviation occurs.

[0019]

According to the present invention, a rotary brush 3 is provided above a transfer table 1 for transferring a seedling raising container A, the shaft being mounted on the tip of a pair of left and right mounting arms 7 rotatably provided on the transfer table 1. A pair of traction rods 18 are provided at both ends of the brush rotating shaft 6 of the rotating brush 3.
And each of the towing rods 18 is vertically attached to an adjusting screw shaft 19 having a dial 22, and the left and right adjusting screw shafts 1
9 is connected by a connecting shaft 21, a pair of left and right frame side plates 16 are provided on the transfer table 1, and the connecting shaft 21 is engaged with the upper portion of the frame side plate 16 from above and supported by a different height. Since this is a rotary brush adjusting device provided with a plurality of engagement step portions 26 in the front-rear direction, the space for forming the switching engagement step portions 26 is increased, and the change range can be widened. According to the present invention, the brush rotating shaft 6 is configured to move in an arc around two rotating shafts 8 and a connecting shaft 21 for attaching the mounting arm 7 to the transfer table 1. Of the brush rotating shaft 6 and the connecting shaft 2
The center switching engagement step 26a, which is located vertically above the reference switching step 26a, serves as a reference step. Since the rotating brush is provided as an adjusting device, the accuracy of the change is improved.

[Brief description of the drawings]

FIG. 1 is a side view.

FIG. 2 is a front view.

FIG. 3 is a side view of a frame side plate.

FIG. 4 is a partial front view of the height adjusting device.

FIG. 5 is a sectional view of an adjustment state.

FIG. 6 is a partial perspective view of the height adjusting device.

FIG. 7 is a diagram of a known example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Transfer stand, 2 ... Transfer roll, 3 ... Rotary brush, 4 ... Floor soil, 6 ... Brush rotation shaft, 7 ... Mounting arm, 8 ... Rotation shaft,
9: gear, 15: height adjusting device, 16: frame side plate,
17 ... insertion hole, 18 ... tow rod, 19 ... adjusting screw shaft,
20: screwing nut, 21: connecting shaft, 22: dial,
Reference numeral 23 denotes an engagement nut, 24 denotes a lock nut, 25 denotes a spring, 26 denotes a switching engagement step, 27 denotes a front wall, and 30 denotes a brush cover.

Claims (2)

[Claims] 1. A rotary brush 3 mounted on a tip of a pair of left and right mounting arms 7 rotatably provided on the transfer table 1 above the transfer table 1 for transferring the seedling raising container A, A pair of traction rods 18 are attached to both ends of the brush rotary shaft 6 of the third embodiment, and each traction rod 18 is attached to an adjusting screw shaft 19 having a dial 22 so as to be vertically movable.
Are connected by a connecting shaft 21, a pair of left and right frame side plates 16 are provided on the transfer table 1, and the connecting shaft 21 is engaged with and supported on the upper portion of the frame side plate 16 from above by switching at different heights. An adjusting device for a rotary brush provided with a plurality of engaging step portions 26 in the front-rear direction. 2. The brush rotating shaft 6 according to claim 1,
Is configured to move in an arc around two of a rotation shaft 8 and a connection shaft 21 for attaching the mounting arm 7 to the transfer table 1,
In the switching engagement step 26, the central switching engagement step 2 in which the brush rotating shaft 6 and the connection shaft 21 are vertically located.
A rotary brush adjusting device having a reference stepped portion 6a and a switching engagement stepped portion 26, which is alternately and sequentially lowered on the front and rear sides of the center switching engagement stepped portion 26a.