JP4834796B1 - Folding mechanism of the pressure roller - Google Patents

Abstract

A roller device is folded to a stable position with a relatively small driving force, and a swinging / fixing operation of a pressure reducing roller device is automatically controlled in conjunction with the folding operation.
A fixed pressure roller device and a movable pressure roller device are connected by a parallel link that is rotated by a telescopic drive device, and the movable pressure roller device supported by an upward arcuate guide base is connected by a main arm of the parallel link. Fold backwards in parallel. The engagement member of the movable pressure roller device is formed with an engagement hole that connects the front vertical hole and the rear horizontal hole, and the horizontal holes are formed on the left and right side plates of the U-shaped frame fixed to the main arm. Then, the horizontally long hole and the engaging hole are connected by a common pin. In conjunction with the folding operation, a control member is provided for reciprocally moving the common pin from the vertically long hole position of the engaging member that enables rocking of the roller device to the horizontally long hole position that disables rocking.
[Selection] Figure 5

Description

  The present invention relates to a folding mechanism of a movable pressure roller apparatus that is continuously provided in a lateral direction of a fixed pressure roller apparatus that is pulled by a pulling rod.

In the field pressure roller apparatus to be pulled by a tractor or the like, the width of the pulling roller is widened to improve the pressure suppression work efficiency, but it is inconvenient for traveling on the road or the like.
For this reason, as described in Japanese Patent Laid-Open No. 8-191608, divided suppression members are connected to the left and right of the central suppression member that is directly connected to the towing rod, and when traveling There is known a working machine in which left and right pressure-reducing members can be folded to the center side.
However, the folding means in the above document has a structure in which the left and right pressure-reducing members are lifted above the center by the driving force of the hydraulic cylinder, so that a large hydraulic thrust is required for lifting, and a large hydraulic pressure is always applied during folding. It takes. In addition, it becomes unstable because a large center of gravity is applied upward during traveling.

On the other hand, the pressure-reducing roller device requires a plurality of side-by-side rollers to adjust to the unevenness of the ground and suppress the pressure. Many things are designed to move.
This type of pressure-reducing roller device has a problem that the roller device rolls when it is lifted and rotated for folding the device, or when traveling on the road surface in the folded state.

JP-A-8-191608

  Accordingly, the first object of the present invention is to provide a folding mechanism for a pressure reducing roller device that can fold the support arm of the movable pressure reduction roller device in a compact and stable state behind the fixed roller device with a relatively small driving force. Is to provide the

  In addition to the above-described mechanism, the second object of the present invention is to suppress pressure while swinging left and right along the ground during pressure suppression work, while regulating left and right swinging during folding operation and folding travel. An object of the present invention is to provide a folding mechanism of a pressure roller device that can maintain stability.

  In order to achieve the first object, the folding mechanism of the pressure reducing roller device of the present invention is substantially U-shaped at the center fulcrum of the front frame and the rear horizontal frame of the frame body to which the pressure reducing roller group is attached below. A movable pressure roller device in which the front and rear columns of the suspension support frame are pivotally mounted, a column fixed to the frame body of the fixed pressure roller device directly connected to the traction rod, and the movable pressure roller device body. A four-point parallel link pivotally mounted at both ends between the suspension support frames, and both ends between the base fixed to the column of the fixed pressure reducing roller device and the shaft body front side of the main arm of the four-point parallel link And a telescopic drive device attached to the fixed pressure roller device, and is integrally coupled to the frame body of the fixed pressure roller device, and is inclined upward from the lower side of the four-point parallel link toward the rear side of the fixed pressure roller device. The main arm of the parallel link Rotatably it is characterized by comprising an arcuate guide stand bears.

  In order to achieve the second object described above, the present invention uses an upper end of a support base fixed between the center fulcrums of the frame body of the movable pressure roller device as an engagement member extending forward and rearward. A coupling bracket having a longitudinally long hole and a laterally long hole communicated with each other through a curved edge, and a coupling bracket fixed to the lower surface of the suspension support frame facing the engaging member of the coupling bracket; A connecting frame with long holes in the front-rear direction on the left and right side plates of the downwardly-opening U-shaped frame that accepts the engaging member of the bracket, and an operation with an engaging lever in the middle and a pin hole with a bifurcated tip A control member inserted in a hollow body with a bottom fixed to the front portion of the suspension support frame through a coil spring so that the base end side of the heel is repelled; A long hole formed in the frame and this U-shape An engagement hole of the engagement member of the connection bracket inserted into the frame body and a pin hole of the control member inserted between the engagement members of the U-shaped frame body and the connection bracket are connected by a common pin. In addition, an engagement protrusion is provided at the front end of the main arm of the four-point parallel link to push back the engagement lever of the control member against the coil spring at the pressure reduction return position of the movable pressure reduction roller device.

At the time of pressure reduction work, the fixed pressure roller device and the movable pressure roller device at the center are coupled in a horizontal line via a four-point parallel link, so that efficient wide width reduction is possible.
On the other hand, when folding the movable pressure roller device, if the telescopic drive device of the four-point parallel link is extended, the main arm of the four-point parallel link supporting the movable pressure roller device is supported on the base end side pivoting portion. It is pushed out while being supported on the arcuate guide base of the fixed pressure roller device, and is folded at a right angle to the rear of the fixed pressure roller device. Therefore, the folding driving force can be suppressed and stable folding can be performed.

  The suspension support frame and the gantry frame body of the movable pressure roller device are pivotally mounted so that the downward U-shaped frame body of the suspension support frame on the top of the gantry frame body is engaged with the connection bracket. The vertical engagement hole formed in the member and the communication hole of the horizontal elongated hole and the horizontal elongated hole of the U-shaped frame body are connected by a common pin, and the position of the common pin is between the vertical elongated hole and the horizontal elongated hole of the engagement member. Since the control member to be displaced by is provided, the operating rod of the control member is moved to the vertical long hole position by the tip projection of the main arm of the four-point parallel link, and the control member spring is moved to the horizontal long hole position. The inside engages with the vertically long hole and swings left and right along the ground, but when folded, it engages with the horizontally long hole and locks the swing. Accordingly, the rocking / fixing of the pressure reducing roller device is automatically controlled in response to the pressure reducing operation and the folding operation.

The perspective view at the time of the pressure reduction operation | work of the pressure reduction roller apparatus incorporating the mechanism of this invention Right side view of FIG. The perspective view at the time of driving | running | working on the road of the pressure reduction roller apparatus incorporating the mechanism of this invention Right side view of FIG. Enlarged view of the main part of the frame during pressure reduction work Enlarged view of main part of frame during folding operation Enlarged view of the main part of the frame when folding is completed Exploded view explaining assembly of main frame Main part explanatory drawing which shows the rocking | fluctuation engagement state of a control member Main part explanatory drawing which shows the rocking | fluctuation impossible engagement state of a control member

Embodiments of the present invention will be described below with reference to the accompanying drawings.
The pressure reducing roller device is a device that is pulled by a tractor 26 such as a tractor to reduce the ground surface of the field, and as shown in FIG. A movable pressure roller device 5 is connected via a four-point parallel link 9, and each pressure roller device 7, 5 has a plurality of pressure rollers 1 mounted below the frame frame and a weight 13 placed on the frame frame. . The pressure-reducing roller device according to the present invention is arranged when the pressure-reducing roller devices 7 and 5 are connected and arranged in a horizontal row by four-point parallel links 9 as shown in FIGS. As shown in FIGS. 3 and 4, the movable pressure roller device 5 is configured to be folded rearward of the fixed pressure roller device 7 by a four-point parallel link 9.

  For this reason, as shown in FIG. 1, the movable pressure roller device 5 includes a frame frame 2 having a pressure roller 1 attached to the lower side and a weight 13 placed on the upper surface thereof, and a front portion of the frame frame 2. A substantially U-shaped suspension support frame 4 is pivotally mounted between the central fulcrum 3 and 3 of the horizontal frame 2a and the rear horizontal frame 2b via the front column 4a and the rear column 4b.

  The four-point parallel link 9 includes a main arm 9 a and a parallel link 9 b, and is disposed between the support column 8 fixed to the mount frame 7 ′ of the pressure reducing roller device 7 and the suspension support frame 4 of the movable pressure reducing roller device 5 in the previous period. A hydraulic cylinder that is pivotally attached to the base 10 fixed to the support column 8 of the fixed pressure roller device 7 and the shaft body front side of the main arm 9a. The telescopic drive device 11 is erected and attached to the shaft.

An arcuate guide base 12 is fixed to the frame body 7 'of the fixed pressure roller apparatus 7 so as to incline backward through the lower side of the four-point parallel link 9,
The arcuate guide base 12 elastically supports the main arm 9a of the four-point parallel link 9 and the movable pressure reducing roller device 5 pivotally attached to the main arm 9a and the movable pressure reducing roller device 5 as shown in FIG. The lower end of the arcuate guide base 12 is supported by the spring plate 31 and the upper part is supported by the strong support column 32 so that the roller device 5 can be firmly supported at the position folded backward.

Since the present invention is configured as described above, when the telescopic drive device 11 of the four-point parallel link 9 is extended from the states of FIGS. 1, 2 and 5, as shown in FIGS. The main arm 9a of the four-point parallel link 9 that supports and suspends 5 is pivoted upward along the arc-shaped guide base 12 with the support shaft 28 as a fulcrum, and the movable pressure roller device 5 is as shown in FIGS. Is folded to the rear of the fixed pressure roller device 7.
In the figure, reference numeral 27 denotes a traveling wheel that is rotated up and down by a hydraulic cylinder or the like.

  By the way, the movable pressure reducing roller device 5 can swing left and right during the pressure reduction operation shown in FIGS. 1 and 5 so as to guarantee pressure reduction along the ground and to stabilize the folding operation. It is necessary to make the left-right swing impossible, and it is desirable that these operation switching be automatically controlled in conjunction with the folding operation.

In order to achieve the above object, the present invention is configured as follows.
That is, as shown in FIGS. 5 to 7, a connecting bracket 17 is fixed between the center fulcrums 3 and 3 of the front horizontal frame 2 a and the rear horizontal frame 2 b constituting the gantry frame body 2. An engagement member 16 having a predetermined length extending in the direction of the center fulcrum 3 and 3 is provided at the upper end of the support base 15, and a longitudinally long hole 16 a and a laterally long hole 16 b are provided in the longitudinal direction of the engagement member 16 via curved edges. A communicating engagement hole is formed.

  On the other hand, a connecting frame 20 is fixed to the lower surface of the suspension support frame 4 facing the engaging member 16 of the connecting bracket 17. The connecting frame 20 has a downward U-shaped frame 18 that receives the engaging member 16 of the connecting bracket 17, and the left and right side plates of the downward U-shaped frame 18 correspond to the engaging member 16. A long hole 19 is formed.

Further, a control member for restricting the swinging / unswinging (fixing) of the movable pressure reducing roller device 5 between the engaging member 16 of the connecting bracket 17 and the U-shaped frame 18 of the suspension support frame 4. The front end side of 24 is inserted.
As shown in FIG. 5 to FIG. 8, the control member 24 is formed with a bifurcated tip end side of a rod integrally having an engagement lever 21a in the middle, and an operating rod 21 provided with a pin hole 21b at the bifurcated tip end. And a bottomed hollow body 22 fixed to the front portion of the suspension support frame 4, and the proximal end side of the operating rod 21 is inserted into the bottomed hollow body 22 via a coil spring 23, and the pin hole A bifurcated tip formed with 21b is slidably inserted into the gap between the U-shaped frame 18 and the engaging member 16 of the connecting bracket 17 received in the U-shaped frame 18, and the U-shaped The common hole 25 is inserted and connected to the long hole 19 of the frame 18, the tip pin hole 21 b of the operating rod 21, and the engagement hole (vertical long hole 16 a, horizontal long hole 16 b) of the engagement member 16. Yes.
Further, an engagement projection 29 is provided at the tip of the main arm 9a of the four-point parallel link 9, and when the folded movable pressure roller device 5 returns to the pressure reduction work position, as shown in FIGS. The mating protrusion 29 engages with the engaging lever 21a of the operating rod 21, and is configured to push back the operating rod 21 against the coil spring 23 in the bottomed hollow body 22.

Thus, as shown in FIGS. 5 and 9, when the movable pressure reducing roller device 5 is in the pressure reducing operation position, the common pin 25 is engaged with the longitudinally long hole 16 a of the engaging member 16, so that it can swing left and right. Suppression that is familiar to the ground surface is performed.
On the other hand, as shown in FIGS. 6, 7, and 10, as the movable pressure reducing roller device 5 is rotated in the folding direction, the operating rod 21 is disengaged from the engagement protrusion 25 of the main arm 9a, Since it is pushed out by the coil spring 23, the common pin 25 is engaged with the laterally long hole 16b of the engaging member 16 and is locked so as not to swing left and right.

  The present invention can be used in a pressure-reducing roller device that performs a pressure-reducing operation in a field, thereby improving the efficiency of the pressure-reducing / travel switching operation and improving the safety during traveling on the road.

DESCRIPTION OF SYMBOLS 1 ... Pressure-reducing roller 2 ... Mount frame body 2a ... Front side horizontal frame 2b ... Rear side horizontal frame 3 ... Center fulcrum 4 ... Lifting support frame 4a ... Front support | pillar 4b ... Rear support | pillar 5 ... Movable pressure-reduction roller device 6 ... Tow rod 7 ... Fixed pressure roller device 7 '... frame frame 8 ... post 9 ... four-point parallel link 9a ... main arm 9b ... parallel link 10 ... base 11 ... extension drive device 12 ... circular guide base 13 ... weight 14 ... stopper 15 ... support Base 16 ... engaging member 16a ... vertically long hole 16b ... horizontally long hole 17 ... connecting bracket 18 ... downward U-shaped frame 19 ... long hole 20 ... connecting frame 21 ... operating rod 21a ... engaging lever 21b ... pin hole 22 ... Bottomed hollow body 23 ... Coil spring 24 ... Control member 25 ... Pin 26 ... Traction wheel 27 ... Traveling wheel 28 ... Support shaft 29 ... Engaging projection 30 ... Buffer spring 31 ... Spring plate 32 ... Post

Claims (2)

Suspension in a substantially U-shape at the center fulcrum (3) and (3) of the front and rear horizontal frames (2a) and (2b) of the frame (2) with the pressure roller (1) group attached below A movable pressure roller device (5) on which the front and rear struts (4a) and (4b) of the support frame (4) are pivotally mounted.
Between the column (8) fixed to the frame body (7 ′) of the fixed pressure roller device (7) directly connected to the traction rod (6) and the suspension support frame (4) of the movable pressure roller device body (5) A four-point parallel link (9) pivotally attached to both ends,
Telescopic drive device with both ends axially attached between the base (10) fixed to the column (8) of the fixed pressure roller device (7) and the shaft body front side of the main arm (9a) of the four-point parallel link (9) (11) and
The fixed pressure roller device (7) is integrally coupled to the gantry frame (7 '), and is inclined upward from the lower side of the four-point parallel link (9) toward the rear side of the fixed pressure roller device (7). A pressure roller folding mechanism comprising an arcuate guide base (12) that slidably supports the main arm (9a) of the four-point parallel link (9). The upper end of the support base (15) fixed between the central fulcrum (3) and (3) of the frame body (2) of the movable pressure roller device (5) is used as an engaging member (16) extending forward and rearward. A coupling bracket (17) provided with an engagement hole in which the longitudinally long hole (16a) and the laterally long hole (16b) are communicated with each other through the curved edge on the engagement member (16);
A lower U-shape that is fixed to the lower surface of the suspension support frame (4) facing the engaging member (16) of the connecting bracket (17) and receives the engaging member (16) of the connecting bracket (17). A connecting frame (20) in which a long hole (19) in the front-rear direction is formed in the left and right side plates of the frame-shaped frame (18), and
An engagement lever (21a) is provided in the middle, and the proximal end side of the operating rod (21) having a bifurcated tip and a pin hole (21b) is fixed to the front portion of the suspension support frame (4). It has a control member (24) inserted in the bottom hollow body (22) via a coil spring (23) in a resilient manner,
The long hole (19) formed in the U-shaped frame (18) of the suspension support frame (4) and the connection bracket (17) inserted in the U-shaped frame (18). The joint hole of the joint member (16) and the pin hole (21b) of the control member (24) inserted between the engagement member (16) of the connection frame (20) and the connection bracket (17) are shared pins. (25) and at the tip of the main arm (9a) of the four-point parallel link (9), the engagement lever (21a) of the control member (24) at the pressure reduction return position of the movable pressure reduction roller device (5) 2. A folding mechanism for a pressure-reducing roller according to claim 1, further comprising an engagement protrusion (29) for pushing back the spring against the coil spring (23).

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