JP5132441B2 - Mud removal mechanism for traveling vehicles - Google Patents

Description

  The present invention relates to a mud dropping mechanism for a traveling vehicle including a crawler traveling device.

Conventionally, when a traveling vehicle such as a tractor travels on a field, mud adheres between lugs (projections) on the ground contact surface of the crawler belt of the crawler traveling device and on the side surfaces of the lugs, and the traveling vehicle finishes the work on the field. When moving, there was a problem that a large amount of mud adhering to the crawler traveling device fell on the road surface and soiled the paved road. Furthermore, if the mud adhering to the crawler traveling device is dried and hardened, there is a problem that it is difficult to remove the mud even at the time of washing the car. Therefore, it is necessary to scrape the mud frequently.
In order to remove mud adhering to the ground contact surface of the crawler belt, a device that raises and lowers a scraper plate that scrapes off mud as the vehicle body of the traveling vehicle moves up and down is disclosed (Patent Document 1). In this device, a link mechanism that moves up and down the vehicle body and a scraper plate that scrapes off mud are connected by a rod, thereby linking the raising and lowering of the vehicle body of the traveling vehicle and the raising and lowering of the scraper plate. Further, the arcuate guide extending rearward from the scraper board rides on the lug on the ground contact surface of the crawler belt, so that the scraper board is previously swung upward so as not to collide with the lug.
JP 2000-326874 A

However, in the apparatus described in Patent Document 1, the scraper plate and the both side surfaces of the lug do not contact each other, and mud remains in the vicinity of both side surfaces of the lug. When the traveling vehicle is moving backward, the guide does not ride on the lug, and the scraper plate and the lug collide.
In view of such a problem, the present invention provides a mud remover for a traveling vehicle that can efficiently scrape off mud adhering between the lugs by rotating the mud remover between the lugs on the ground surface of the crawler belt. The purpose is to provide a mechanism.

In order to achieve the above object, the present invention employs the following technical means.
First, in the pair of left and right crawler traveling devices 2 of the traveling vehicle 1, a mud removing tool 4 that scrapes off mud by rotating and entering between the lugs R of the ground contact surface 3a of the crawler belt 3, and the mud removing tool 4 A driving device 5 that supports and rotates and a driving device 5 that is mounted inside the left and right crawler traveling device 2 and is pivotally supported by the vehicle body 6 of the traveling vehicle 1 so as to be swingable about a horizontal axis S1. 7 and
The mud dropping tool 4 is in contact with the ground contact surface 3a of the crawler belt 3 so as to be movable in the perspective direction E by the crawler belt 3 being rotationally driven ,
The driving device 5 is an electric motor, and one end of the mud dropping tool 4 is attached to the output shaft 5a thereof, and the mud dropping tool 4 is brought into contact with the crawler belt 3 by gravity.
The mud dropping tool 4 is spirally formed of metal or resin, and is driven to rotate in the same direction as the crawler belt 3 at the contact portion with the crawler belt 3 to scrape mud outward of the left and right crawler travel devices 2. It is configured to be possible .

Secondly, the crawler traveling device 2 has the crawler belt 3 wound around the upper driving wheel 8 and the front and rear lower driven wheels 16, 17;
It said scraping tool 4 and the drive unit 5 is characterized by being and arranged on the rear side above the axis 8a of the driving wheel 8.
Thirdly, the support body 7 is pivotally supported by a column attachment member 10 a of a driver seat protection device 10 attached to the rear axle case 9 of the vehicle body 6, and the mud is interposed between the vehicle body 6 and the support body 7. Retracting means 11 for retracting and holding the dropping tool 4 and the driving device 5 upward from the ground contact surface 3a of the crawler belt 3 is provided.

Thereby, the mud dropping tool 4 is caused to enter between the uneven lugs R on the ground contact surface 3a of the crawler belt 3 while being rotated, and the mud dropping tool 4 is moved in the perspective direction E by the movement of the crawler belt 3, whereby the crawler Mud adhering between the lugs R of the ground contact surface 3a of the belt 3 can be efficiently scraped off.
Further, the mud dropping tool 4 is disposed above the axial center 8a of the drive wheel 8 of the crawler traveling device 2 and on one side of the front and rear, and is formed in a spiral shape with metal or resin, so that the mud dropping tool 4 is a lug. It fits from above between R, and the contact area between the mud dropping tool 4 and both side surfaces of the lug R and between the lugs R is increased, and mud can be scraped off more efficiently.

  Furthermore, since the support body 7 is pivotally supported by the column attachment member 10a of the driver's seat protection device 10 and has the retracting means 11 for retracting and holding the mud dropping device 4, the number of parts can be reduced.

  According to the present invention, the mud dropping tool is allowed to enter between the lugs on the ground contact surface of the crawler belt, so that mud adhering between the lugs can be efficiently scraped off.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 8 show a traveling vehicle 1 according to an embodiment of the present invention.
The traveling vehicle 1 has a vehicle body 6 supported by a front tire traveling device 12 and a rear crawler traveling device 2.
The vehicle body 6 directly connects an engine, a clutch housing, and a transmission case, and a pair of left and right rear axle cases 9 that rotatably support a rear axle S2 that extends in the left-right direction protrude on the left and right sides of the transmission case. It is provided in the shape. A driver's seat protection device 10 surrounding the driver's seat and the driver's seat is provided at the upper part of the vehicle body 6.

The column attachment members 10a of the driver's seat protection device 10 are attached to the upper surfaces of the left and right rear axle cases 9, and the lugs R of the ground contact surface 3a of the crawler belt 3 described later of the crawler traveling device 2 are attached to the left and right column attachment members 10a. A mud dropping mechanism X having a mud dropping tool 4 that can enter between is disposed. Further, a pivot frame 13 of the crawler traveling device 2 is provided on the lower surface of the rear axle case 9.
1 to 3, the pair of left and right crawler traveling devices 2 are pivotally supported by the pivot frame 13 provided on the lower surfaces of the left and right rear axle cases 9 described above and swingably supported by the pivot frame 13. The mounting frame 14, a square cylindrical track frame 15 fixed to the lower end of the mounting frame 14 and extending in the front-rear direction, and disposed above the track frame 15 and provided coaxially at the left and right outer ends of the rear axle S2. Drive wheel 8, a pair of front and rear driven wheels 16 and 17 disposed at the front and rear ends of the track frame 15, and a crawler belt 3 wound around the drive wheel 8 and the driven wheels 16 and 17, respectively. Yes.

Each of the left and right crawler travel devices 2 has a triangular shape with the upper driving wheel 8 and the front and rear lower driven wheels 16 and 17 as apexes in a side view. Further, the crawler belt 3 described above has an engagement hole 3b that engages with the tooth portion 8b of the driving wheel 8 at the center of the left and right sides thereof, penetrating from the non-grounding surface side to the grounding surface 3a side. , The crawler belt 3 is rotationally driven in the circumferential direction, and thereby the propulsive force of the traveling vehicle 1 is obtained.
1 to 6, a column support member 10 a is provided on each of the left and right rear axle cases 9, and a rear column of the driver's seat protection device 10 is mounted on the column mounting member 10 a via a cushion material 18. In addition, the mud dropping mechanism X is attached to the left and right pairs by using the column attachment member 10a.

Each of the left and right mud dropping mechanisms X described above includes a mud dropping tool 4 that can enter between the lugs R of the ground contact surface 3a of the crawler belt 3, and a motor having an output shaft 5a to which the mud dropping tool 4 is attached at one end ( Drive unit 5, a support body 7 that pivotally supports the motor 5 with respect to the column mounting member 10 a so as to be able to swing around a swing axis S 1 (horizontal axis), and a mud dropping tool 4 for the ground contact surface 3 a of the crawler belt 3. And retreating means 11 for retreating and holding. Further, the mud dropping mechanism X is located on the inner side in the left-right direction of the drive wheel 8 of the triangular crawler traveling device 2 and in the rear upper direction in a side view.
The mud dropping tool 4 is a spiral blade that is attached to the central rotating shaft 4a and formed of metal or resin. The left mud dropping tool 4 has a right-hand thread shape, and the right mud dropping tool 4 has a left-hand screw shape. Is formed. One end of the left and right inner sides of the rotating shaft 4a is connected coaxially with the output shaft 5a of the motor 5, and the mud dropper 4 rotates to remove mud between the lugs R from the left and right outer sides. Can be scraped.

The axial length of the mud dropping tool 4 is substantially the same as or slightly longer than the width of the crawler belt 3. Further, the diameter of the spiral blade of the mud dropping tool 4 is set so as to fit between the lugs R of the ground contact surface 3a of the crawler belt 3 so that the contact area between the mud dropping tool 4 and the lug R is increased.
The central portion in the axial direction of the mud dropping tool 4 has a smaller diameter than the other portions, and does not interfere with the tip of the tooth portion 8b of the drive wheel 8 protruding from the engagement hole 3b of the crawler belt 3. Moreover, when forming the mud dropping tool 4 with resin, you may form with the spiral brush of full length same diameter.

The motor 5 is an electric type, and is fixed to a support body 7 to be described later via a plate-like attachment portion 5b provided at one end and bent into an L shape.
The support body 7 has a hinge structure in which two plates 7 a and 7 b are connected by a swing shaft S <b> 1, and connects the support mounting member 10 a of the driver seat protection device 10 and the mounting portion 5 b of the motor 5. One plate 7a (the plate 7a on the column mounting member 10a side) of the support 7 is fixed to the back surface of the column mounting member 10a, and the other plate 7b (on the motor 5 side) via a swing shaft S1 extending in the left-right direction. The plate 7b) is pivotably supported in the vertical direction. Further, an attachment portion 5b of the motor 5 is fixed to the plate 7b on the motor 5 side so that the output shaft 5a faces left and right.

As shown in FIGS. 1 to 5, the retracting means 11 has a structure in which a cable 11 a is connected to and suspended from the lower end portion of the support 7. It is preferable that the cable 11a can be moved up and down from the driver's seat.
The retracting means 11 ′ is a solenoid having an iron core 11′a therein, as shown by a one-dot chain line in FIGS. 1-3, and is provided on the upper surface of the column mounting member 10a of the driver's seat protection device 10. May be. In this case, the iron core 11′a of the retracting means 11 ′ is urged so as to protrude rearward from the solenoid by a spring or the like, and one end of the iron core 11′a is a plate 7a on the support mounting member 10a side of the support body 7. And abuts against the front surface of the plate 7b on the motor 5 side of the support 7. Further, when the current is passed through the retracting means 11 ′ and excited, the iron core 11 ′ a protruding backward is drawn into the solenoid, and the mud dropping tool 4 is brought into contact with the ground contact surface 3 a of the crawler belt 3. On the other hand, the iron core 11′a that has been pulled in by turning off and demagnetizing the current flowing through the retracting means 11 ′ protrudes backward by the bias of a spring or the like, and the mud dropping tool 4 is retracted from the ground contact surface 3a of the crawler belt 3; That state can be maintained.

Then, the usage aspect of each mud dropping mechanism X on either side mentioned above is demonstrated.
When scraping off the mud of the crawler traveling device 2 of the traveling vehicle 1, the retracting means 11 is operated so that the mud removing tool 4 is caused to enter between the lugs R of the ground contact surface 3 a of the crawler belt 3 by gravity. (Fig. 4 (a) to (b)). Then, the left motor 5 drives its output shaft 5a in the counterclockwise direction (the clockwise direction in FIGS. 4B and 4C (the direction of the arrow A)), and the left mud remover 4 is connected to the lug R. Rotate left between. Further, the right motor 5 drives its output shaft 5a in the right rotation direction, and rotates the right mud dropping tool 4 between the lugs R to the right. Thereby, the mud adhering between the both side surfaces of the lug R and the lug R is scraped to the left and right outwards.

Next, when the crawler belt 3 is driven to rotate in the direction of arrow B in FIG. 4B by moving the traveling vehicle 1 forward, the mud dropping tool 4 is forced to move in the direction of arrow C in FIG. 4B. Works over the lug R with which the mud dropping tool 4 is in contact (from FIG. 4B to FIG. 4C). Furthermore, when the crawler belt 3 is driven to rotate, the mud dropping tool 4 can enter between the adjacent lugs R.
That is, the mud dropping mechanism X moves the traveling vehicle 1 forward and rotationally drives the crawler belt 3 and the mud dropping tool 4 so that the mud dropping tool 4 is centered on the swing shaft S1 with respect to the ground contact surface 3a of the crawler belt 3. As shown in FIGS. 1 and 4, the rugged lug R formed on the ground contact surface 3a of the crawler belt 3 is swung in the perspective direction E (in the direction approaching and separating from the ground contact surface 3a of the crawler belt 3). The mud between the lugs R can be scraped off along the ground contact surface 3a.

Further, even when the traveling vehicle 1 is moved backward, the mud dropping mechanism X is located behind the swing shaft S1, so that the mud dropping tool 4 is in contact with the mud dropping tool 4 that is in contact with the front lug R. A force works in the direction of getting over the lug R. Therefore, the mud dropping tool 4 is swung in the perspective direction E around the rocking axis S1 with respect to the ground contact surface 3a of the crawler belt 3, and is in contact with the lug R while mud between the lugs R along the ground contact surface 3a. Can be scraped off.
Here, mud adhering between the lugs R of the ground contact surface 3a of the crawler belt 3 can be scraped off more by using the farm tool N such as a scoop together. The traveling vehicle 1 has a farm tool holder 19 on which these farm tools N are mounted when not in use.

7 and 8, the farm tool holders 19 are attached to a pair of left and right support frames 20 having a quadrangular cross section extending in the left and right direction of the work machine connected to the rear portion of the traveling vehicle 1. In addition, the left and right farm tool holders 19 are attached to a support frame 20 that supports a gauge wheel (not shown) in the working machine of the traveling vehicle 1, fixed to the upper end of the mount body 21, and And a holding body 22 that holds the handle in between.
The attachment body 21 is formed in a quadrangular shape in a side view, surrounds the support frame 20 in close contact, and is fastened and fixed by screws or the like. In addition, according to the cross-sectional shape of the support frame 20, the side view shape of the attachment body 21 may be round, triangular, hexagonal, or the like.

The holding body 22 is substantially U-shaped in a side view with the upper side opened, and the lower end of the holding body 22 is attached to the upper end of the attachment body 21 by a rivet or the like. Moreover, in the middle part of the holding body 22, it has a dent curved outward along the handle of the farm tool N. By holding the handle of the farm tool N here, the farm tool N can be easily attached to the work implement. Can be attached to.
In addition, this invention is not limited to embodiment mentioned above. Each configuration of the traveling vehicle 1 or the like, or the overall structure, shape, dimensions, and the like can be appropriately changed in accordance with the spirit of the present invention.

The mud dropping mechanism X may be disposed above and in front of the axis 8a of the drive wheel 8 of the crawler traveling device 2.
The drive device 5 may be a hydraulic motor. Moreover, you may provide the reduction gear.

The expanded side view of the principal part which shows embodiment of this invention. The expansion rear view of the mud dropping tool of a mud dropping mechanism, a drive device, and a support body. The perspective view of a mud dropping mechanism. The use mode figure of a mud dropping mechanism. The whole side view of a traveling vehicle. The whole rear view of a traveling vehicle. The side view of the holder for agricultural tools provided in the working machine. The front view of the holder for agricultural tools provided in the working machine.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Traveling vehicle 2 Crawler traveling device 3 Crawler belt 3a Grounding surface of crawler belt 4 Mud dropping tool 5 Motor (drive device)
6 Car body 7 Support body 8 Drive wheel of crawler traveling device 8a Shaft center of drive wheel 9 Rear axle case 10 Driver's seat protection device 10a Strut mounting member of driver's seat protection device 11 Retraction means R Lug of ground surface of crawler belt X Mud drop Mechanism S1 Swing shaft (horizontal axis) of mud drop mechanism
E Perspective direction with respect to the contact surface of the crawler belt

Claims (3)

A mud remover (4) that scrapes off mud by rotating between the lugs (R) of the ground contact surface (3a) of the crawler belt (3) in the pair of left and right crawler travel devices (2) of the traveling vehicle (1). ), A driving device (5) that supports and rotates the mud dropping tool (4), and a driving device (5) attached to the inside of the left and right crawler traveling device (2 ) to attach the driving device (5). A support body (7) pivotally supported around the horizontal axis (S1) on the vehicle body (6),
The mud dropping tool (4) is in contact with the ground contact surface (3a) of the crawler belt (3) so as to be movable in a perspective direction (E) when the crawler belt (3) is driven to rotate .
The drive device (5) is an electric motor, and one end of a mud dropping tool (4) is attached to the output shaft (5a), and the mud dropping tool (4) is brought into contact with the crawler belt (3) by gravity,
The mud dropping tool (4) is formed in a spiral shape with metal or resin, and is driven to rotate in the same direction as the crawler belt (3) at the abutting portion with the crawler belt (3). ), A mud dropping mechanism for a traveling vehicle, characterized in that mud can be scraped outward . The crawler traveling device (2) has a crawler belt (3) wound around an upper driving wheel (8) and front and rear lower driven wheels (16, 17),
The said mud dropping tool (4) and the drive device (5) are arranged above the shaft center (8a) of the drive wheel (8) and on the rear side thereof . Mud removal mechanism for traveling vehicles. The support body (7) is pivotally supported by a support mounting member (10a) of a driver seat protection device (10) attached to a rear axle case (9) of the vehicle body (6), and is supported by the vehicle body (6). A retracting means (11) for retracting and holding the mud dropping tool (4) and the driving device (5) upward from the ground contact surface (3a) of the crawler belt (3) is provided between the body (7) and the body (7). The mud dropping mechanism for a traveling vehicle according to claim 1 or 2.

Images