KR100901907B1 - Traveling apparatus for crawler - Google Patents

Abstract

An object of the present invention is to support a front and rear idler and a front wheel in a rocking frame that is swingably supported through a rocking shaft on a frame support fixed to a vehicle body, and rotationally drive a drive wheel located above the front wheel, thereby driving a wheel, a front and rear idler, and a front wheel. In a crawler type traveling device in which a crawler belt wound around is driven, it is difficult for soil to accumulate on the main frame of the swinging frame.

The main frame 26 which has the front-back idler support parts 24 and 25 which support the front-back idler 10, 11, and is equipped with the front wheel 12, and the upper side of the main frame 26 for the oscillation frame 9 is supported. The rear connecting member 28 which connects the oscillation shaft 27 and the oscillation shaft 27 and the front idler support part 24 arrange | positioned at the side, and the oscillation shaft 27 and the rear idler support part 25 It consists of the connection member 29, and makes the opening-and-opening shape between the front-rear connection member 28 and 29 and the main frame 26.

Crawler type traveling device, swing frame, idler, drive wheel, front wheel

Description

Crawler type traveling device {TRAVELING APPARATUS FOR CRAWLER}

The present invention relates to a crawler type traveling device.

Conventionally, as a crawler type traveling device, there is a semi crawler type crawler type traveling device which is mounted in place of a wheel of a traveling vehicle such as a tractor, and as this semi crawler type crawler type traveling device, a frame support fixed to the vehicle body side of the traveling vehicle is provided. A swinging frame which is swingably supported around an axis in the left and right direction through a swinging shaft, and supports a plurality of front wheels disposed between the front and rear idlers and the front and rear idlers, and on the upper side of the front wheel. A drive wheel disposed on the vehicle body and rotatably supported around the axial center in the left-right direction, and the drive wheel is rotated by the axle of the traveling vehicle, whereby the crawler belt wound around the drive wheel, the front-back idler and the front wheel is circulated. There is a thing comprised so that it may be rotated (refer to Unexamined-Japanese-Patent No. 2004-148872).

The swinging frame of the conventional crawler type traveling device includes a main frame supporting front and rear idlers and supporting front wheels, and a support plate extending upward from the left and right inner end sides of the main frame and having a plate surface facing in the left and right direction. And a swing shaft fixed to the upper end side of the support plate and rotatably supported around the axial center in the left and right directions on the frame support, and arranged so as to extend from the swing shaft side to the main frame and to the left and right outer surfaces of the support plate. It is mainly composed of a pair of front and rear reinforcement plates fixed to the weld.

In the above conventional crawler-type traveling device, the swinging frame is installed upward from the left and right inner end side of the main frame, and the plate surface faces the left and right direction from the support plate and the swing shaft fixed to the support plate upper end side. Since it is arranged to reach the main frame and has a pair of front and rear reinforcement plates welded and fixed to the left and right outer surfaces of the support plate, it is difficult for the soil loaded on the main frame to fall off by the support plate and the reinforcement plate. Soil is likely to accumulate on the main frame of the frame), and the soil accumulated on the main frame falls on the road during the movement of the traveling vehicle, and suffers from its processing, or suffers from dropping the soil accumulated on the main frame when washing. There is a problem such as.

Therefore, an object of the present invention is to provide a crawler type traveling device in which dirt is hard to accumulate on the main frame of the rocking frame in view of the above problems.

In order to solve the above technical problem, the crawler-type traveling device according to the present invention,

A frame support fixed to the vehicle body side of the traveling vehicle,

A swinging frame supported on the frame support so as to be swingable around an axis in the left and right direction through a swinging shaft,

A front idler and a rear idler supported by the swing frame;

A plurality of front wheels disposed between the front idler and the rear idler and supported by the swinging frame;

The drive wheel, the front idler, the rear idler, and the plurality of drive wheels are disposed above the plurality of front wheels and provided on the vehicle body side with drive wheels supported through the axles, and the drive wheels are rotated by the axles. A crawler type traveling device configured to drive a crawler belt wound over a front wheel, wherein the swing frame includes a front idler support part for supporting the front idler, a rear idler support part for supporting the rear idler, and the plurality of front wheels A main frame and the oscillation shaft disposed above the main frame, the oscillation frame further connects the front connecting member connecting the oscillation shaft and the front idler support, and the oscillation shaft and the rear idler support. And a rear connecting member, wherein the front and rear connecting members The main frame is characterized in that it is configured to form an opening which is open in the right and left direction between the front and rear of the connecting member and the main frame.

In this structure, the front and rear connecting members and the main frame are configured such that openings are opened in the left and right directions between the front and rear connecting members and the main frame, so that dirt is hard to accumulate on the main frame. .

Moreover, in embodiment of this invention, the said rocking frame may be equipped with the intermediate connection member which connects the part of the area | region of the said oscillation shaft vicinity of the said front-back connecting member, and the intermediate part in the front-back direction of a main frame.

In the embodiment of the present invention, the front and rear connecting member is constituted by the pipe member, the front connecting member is inclined forward downward from the swing shaft toward the front idler support, and the rear connecting member is connected to the rear idler support from the swing shaft. It is preferable that the shape is inclined rearward downward.

In an embodiment of the present invention, the opening is an opening portion continuous from the lower surface of at least a portion of the front connecting member to the upper surface of the main frame in an up and down direction, and from the lower surface of at least a portion of the rear connecting member. It is preferable to include the opening part continuous to an upper surface of the main frame in the up-down direction.

In the embodiment of the present invention, the opening is continuous in the vertical direction from the lower surface of at least a portion of the front connecting member to the upper surface of the main frame, the front surface of the intermediate connecting member from the front end region of the front connecting member. From the lower surface of at least a portion of the rear connecting member to the upper surface of the main frame, and from the rear surface of the intermediate connecting member to the rear end region of the rear connecting member. It is preferred to include an opening portion continuous in the direction.

In embodiment of this invention, it is preferable that the area which the said intermediate | middle connection member occupies when viewed from the side is smaller than the area of the said opening.

In the embodiment of the present invention, a rocking plate having a plate surface facing in the left and right direction and disposed on the outside in the left and right direction of the frame supporter is integrally swingable on the rocking frame, and an opening for restricting rocking is formed in the rocking plate. And a rocking regulator having a joining portion inserted into the rocking restricting opening to the frame support, and when the rocking frame swings, a corner portion in the rocking direction of the rocking limiting opening contacts the engaging portion of the rocking frame. It is preferable that the fluctuation is configured to be regulated.

With such a structure, the rocking control means for regulating the rocking motion of a predetermined range or more of the rocking frame can be a simple structure and a structure in which dirt is hard to accumulate.

In the embodiment of the present invention, the swing restricting member is provided with an inner restricting portion for regulating the movement of the swinging frame in the left and right direction by engaging the swinging plate, and is disposed outside the left and right direction of the swinging plate. It is preferable to provide an outer restraining member that is fixed to the engaging portion of the rocking restrictor and is coupled to the rocking plate to regulate the movement of the rocking frame to the outside in the left and right directions.

Moreover, in embodiment of this invention, it is preferable that the said rocking plate is being fixed to the left-right direction inner surface of each upper side of the said front connection member and the said rear connection member.

In the embodiment of the present invention, in the main frame side, a scraper for excluding the soil on the inner circumferential surface side of the crawler belt to the side of the crawler belt, the use position of excluding the soil on the inner circumferential surface of the crawler belt laterally, and the It is preferable to support so that a position can be changed from the use position to the retracted position retracted.

With this structure, the scraper can be placed in the retracted position during the work, so that the scraper does not become a resistance to the running during the work, and when the scraper is needed when going out to a pavement from a field or the like, When traveling, the soil on the inner circumferential surface of the crawler belt can be removed laterally, so that the soil does not drop on the pavement, for example.

In embodiment of this invention, it is preferable to attach the said scraper to the attachment part of the said back idler at intervals from the part which the said crawler belt is grounded.

Moreover, in embodiment of this invention, the said scraper is provided with the scraper blade part which acts with respect to the soil of the inner peripheral surface of the said crawler belt, and the blade support part which supports this scraper blade part, The said scraper blade part is provided with respect to the inner peripheral surface of a crawler belt. It is preferable that it is supported by the blade support so that it can move to a direction approaching and a direction away.

In the embodiment of the present invention, the scraper is repositioned to the use position and the retracted position by rotating about the support shaft,

It is maintained in the use position or the retracted position by the pressing force of the spring that the pressing direction is switched around the support shaft,

It is preferable to be comprised so that a position may change from the said use position to the said retracted position by the load exceeding a set value.

According to the present invention, it is possible to change the position of the scraper to the retracted position and the use position and to support the scraper. When the retracted position is used, there is no resistance to running during operation. The soil can be removed laterally, so there is no effect of dropping the soil on the pavement.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described with reference to drawings.

In Fig. 2, reference numeral 1 denotes a tractor (1) in which a semi-crawler crawler type traveling device (2) is independently mounted on the right and left instead of the rear wheel of a four-wheel tractor that is allowed to travel by a pair of left and right front and rear wheels. (Driving vehicle).

The vehicle body 1A of the tractor 1 is mainly configured by mounting the power transmission case 4 via a flywheel housing at the rear of the engine 3, and the power transmission case 4 is, for example, a clutch housing. It is made by connecting the mission case to the rear part of the engine, and the power transmission mechanism which transfers the power from the engine 3 to the axle 5 (rear axle) which drives the crawler-type traveling apparatus 2 is built-in.

The rear axle 5 protrudes outward from the left and right axles case 6 (rear axle case) provided at the left and right sides of the rear portion of the vehicle body 1A, and at the same time, the axle center in the left and right directions to the rear axle case 6. It is rotatably supported around, and the attachment flange 7 is provided in the left-right direction outer edge side of each left and right rear axle 5.

The crawler-type traveling device 2 on the left and right sides is fixed to the frame supporter 8 fixed to the vehicle body 1A side of the tractor 1 as shown in Figs. 1 to 9, and to the frame supporter 8. Between the swinging frame 9 supported so as to be able to swing around an axis of the direction, the front and rear idlers 10 and 11 provided in front and rear of the swinging frame 9 and the front and rear idlers 10 and 11 of the swinging frame 9. The front wheels 12 (three in this embodiment) arrange | positioned at the drive wheels, and the drive wheels arrange | positioned at the upper side of these front wheels 12, and rotatably supported around the axial center of the left-right direction on the vehicle body 1A side ( 13) (sprocket), and the crawler belt 14 wound over the drive wheel 13, the front-back idler 10, 11, and the front wheel 12 is provided.

The drive wheel 13 is bolted to the mounting flange 7 on the outer end side of the rear axle 5 and is rotatably supported on the rear axle case 6 together with the rear axle 5 around the axial center in the left and right directions. have.

Coupling teeth 15 are formed on the outer circumferential side of the drive wheel 13 at predetermined intervals in the circumferential direction, while coupling holes 16 are inserted into the crawler belt 14 to engage and engage the coupling teeth 15. It is formed at predetermined intervals in the belt longitudinal direction, and is configured to rotate the crawler belt 14 by rotating the drive wheel 13 by the rear axle 5 of the tractor 1. The left-right direction outer side is formed longer in the left-right direction than the left-right direction inner side from the coupling hole 16 of the crawler belt 14. As shown in FIG.

The frame support 8 is disposed on the left and right sides of the front and rear pairs of mounting plates 17 arranged to sandwich the mounting portion 6a provided on the rear axle case 6, and the front and rear mounting plates 17, respectively. Passes through a pair of left and right support plates 18 provided so as to extend downward from the lower end side of the plate 17, a connecting plate 19 connecting the upper end sides of the left and right support plates 18, and a left and right support plate 18. It is mainly comprised by the bearing member 20 which consists of cylinders.

The front and rear mounting plates 17, the left and right support plates 18 and the connecting plates 19 are welded to each other, and the bearing member 20 is welded to the left and right support plates 18.

In addition, the front and rear each mounting plate 17 is fixed to the rear axle case 6 by bolts penetrated through the mounting plate 17 and screwed into the screw holes of the rear axle case 6, and the left and right support plates 18 ) Is fixed to the rear axle case 6 by a bolt screwed into the screw hole of the rear axle case 6 through the left and right support plates 18.

In addition, the bearing member 20 has an axial center in the left and right direction, and the bearing member 20 has an axial center below the axial center of the rear axle 5 and is the same as the axial center of the rear axle 5 with respect to the front-rear direction. It is installed to be positioned.

Moreover, the support plate 18 of the left-right direction outer side has the extension installation part 21 extended in the front side rather than the support plate 18 of the left-right direction inner side.

Moreover, the support plates 18 of the outer side of the left and right frame supporters 8 are connected by the connecting body 22 shown in FIG. 9, and this connecting body 22 is bolted to the lower surface side of 1 A of vehicle bodies. The fixed mounting plate 23 is provided.

The swinging frame 9 has a main frame 26 having front and rear idler support portions 24 and 25 for supporting the front and rear idlers 10 and 11 and a left and right direction above and behind the front and rear middle portions of the main frame 26. The rear pivot which connects the oscillation shaft 27 arrange | positioned, the front coupling member 28 which connects this oscillation shaft 27, and the front idler support part 24, and the oscillation shaft 27 and the rear idler support part 25. It is mainly comprised by the connection member 29 and the intermediate connection member 30 which connects the intermediate | middle part of the front-back direction of the oscillation shaft 27 side of the front-back connection members 28 and 29, and the main frame 26. As shown in FIG.

In the rocking frame 9 of the above configuration, between the front and rear connecting members 28 and 29 and the main frame 26 (in this embodiment, the front and rear connecting members 28 and 29 and the main frame 26 and The part enclosed by the intermediate connecting member 30 has an opening shape in the left-right direction, and is formed in the structure which is hard to accumulate soil on the main frame 26. As shown in FIG.

The main frame 26 has a main plate 31 formed of a thick strip plate material and arranged in such a manner that the plate thickness direction is in the vertical direction and the strip length direction is in the front-rear direction, and on the front side side of the main plate 31. The front idler support part 24 is provided, and the rear idler support part 25 is provided in the back part side of the main board 31. As shown in FIG.

The main plate 31 is disposed below the drive wheels 13, and the front wheel mounting brackets 32 are fixed to the front end side, the rear end side, and the front-rear direction center side on the lower surface side of the main plate 31, The front wheels 12 are rotatably mounted around the left and right shafts on the front wheel mounting brackets 32.

In addition, the lower surface of the main plate 31 is provided with a crawler detachment preventing member 33 for preventing the crawler belt 14 from being detached.

The front idler support 24 has a tensioning device 34 for tensioning the crawler belt 14 and a front support bracket 35 for supporting the front idler 10.

The tension applying device 34 has an outer cylinder 36 fixed to the upper surface side of the front part of the main plate 31 and a rear wall fixed to the rear end of the outer cylinder 36 and standing up on the main plate 31. (37), the inner cylinder (38) inserted into the outer cylinder (36) so as to be moved forward and backward from the front side, the front wall (39) fixed to the front end side of the inner cylinder (38), and the rear wall (37). And a spring support body 40 mounted in a forward and backward direction so as to be able to move forward and backward, and a spring 41 interposed between the spring support body 40 and the front wall 39. .

The front support bracket 35 for supporting the front idler 10 is installed on the front surface of the front wall 39 of the tensioning device 34, and the front idler 10 is the front surface side of the front support bracket 35. Is mounted rotatably around the axial center in the left and right direction, and the front idler 10 is pressed against the crawler belt 14 by the pressing force of the spring 41, thereby crawling the belt 14. ), The tension of the crawler belt 14 is adjustable by advancing and retracting the spring bearing body 40 in the front-rear direction.

The rear wall 37 extends in the leftward and rightward direction from the main plate 31.

The rear idler support portion 25 has an L-shaped mounting plate viewed from the side from the lower wall 43a fixed on the main plate 31 and the vertical wall 43b extending upwardly from the rear end of the lower wall 43a. (43) to the mounting member (45) having a rear support bracket (44) fixed to the rear face of the vertical wall (43b) of the mounting plate (43) and bolted to the rear face side of the rear support bracket (44). The rear idler 11 is rotatably mounted around the left and right shafts.

The mounting plate 43 extends in the leftward and rightward direction from the main plate 31.

The rear support bracket 44 has left and right side walls 44a, an upper wall 44b extending from the upper end side of the left and right side walls 44a to the inside in the left and right directions, and an outer side from the rear ends of the left and right side walls 44a. A mounting wall 44c extending to the upper surface side, and a cutout portion 22 is formed on the upper surface side to avoid interference with the rear idler 11, and a pair of upper and lower pairs of nuts (on the front surface side of each of the left and right mounting walls 44c). 23A) is stuck.

The mounting member 45 is disposed on the rear surface side of each of the left and right mounting walls 44c and penetrates the mounting member 45 and the mounting wall 44c to a bolt 23B screwed to the nut 23A. It is fixed to the rear support bracket 44 by this. In addition, the mounting wall 44c and the mounting member 45 of the rear support bracket 44 become slightly rearward inclined with respect to the up-down direction.

The front and rear connecting members 28 and 29 are constituted by a pipe material, and in particular, in the present embodiment, are constituted by square pipes, and are arranged inside the left and right directions of the drive wheel 13.

The front connecting member 28 has one end side in the longitudinal direction fixed to the left and right outer end side of the swing shaft 27, and the other end side in the longitudinal direction extends the rear wall 37 of the front idler support 24. It is fixed to the part, and it becomes inclined forward downward from the swing shaft 27 toward the front idler support part 24. As shown in FIG.

Moreover, the reinforcement member 46 welded to the main board 31, the back wall 37, and the front connection member 28 is provided in the outer side of the lower end part side of the front connection member 28. As shown in FIG.

The rear connection member 29 has one end side in the longitudinal direction fixed to the left and right outer end side of the swing shaft 27, and the other end side in the longitudinal direction is a vertical wall of the mounting plate 43 of the rear idler support 25. It is fixed to the said extended part of 43b), and becomes rearward downward inclination shape from the oscillation shaft 27 toward the rear idler support part 25. As shown in FIG.

Moreover, the reinforcing member 47 welded to the mounting plate 43 and the rear connection member 29 is provided in the left and right both sides of the lower end side of the rear connection member 29. As shown in FIG.

The intermediate connecting member 30 is formed in a bottomed square cylindrical shape having an axial center in the vertical direction, and the upper end side is fixed to the lower end of the rear end side of the front connecting member 28 and the lower end of the front end side of the rear connecting member 29. The lower end side is fixed to the left and right inner side surfaces of the main plate 31.

In this embodiment, the intermediate | middle connection member 30 is formed with two members, the outer side member 48 of the left-right direction, and the inner side member 49 of the left-right direction.

The outer member 48 has an outer wall 30a constituting the left and right outer portion of the intermediate connecting member 30, and extends from the front and rear sides of the outer wall 30a to the left and right inward direction, and the front and rear portions of the intermediate connecting member 30 are formed. It is formed in an inverted U shape in plan view from the front and rear barriers 30b and 30c, and the upper end portion of the outer member 48 is the rear end side of the front connecting member 28 and the front end of the rear connecting member 29. It adheres to the lower side lower surface, and the lower end side of the outer side wall 30a is fixed to the left-right direction inner side surface of the main board 31. As shown in FIG.

The inner member 49 has an inner wall 30d constituting the left and right inner portions of the intermediate connecting member 30, and extends outward from the lower end of the inner wall 30d in the left and right directions, It is formed in an L shape from the bottom wall 30e which comprises a bottom part.

A reinforcing member formed in an L shape from the vertical wall 50a fixed to the outer surface of the intermediate connecting member 30 and the lower wall 50b fixed to the upper surface of the main plate 31, below the intermediate connecting member 30. 50 is provided.

The swing shaft 27 includes an axial body 51 made of a cylindrical body having an axial center in the left and right direction, an outer closure plate 52 that closes the left and right outer end side of the axial body 51, and a shaft body 51. Has an inner blocking member 53 inserted into and fixed to the left and right inner end portions thereof.

The inner closure member 53 is formed with a screw hole 54 having an axial center in the left and right direction.

The swing shaft 27 has a portion extending from the left and right direction intermediate portion to the inner end portion in a concentric shape from the left and right outer end side of the bearing member 20 to the bearing member 20 of the frame support 8. The bearing member 20 is rotatably supported around the axial center in the left and right direction, whereby the rocking frame 9 is rotatably supported around the rocking shaft 27 by the frame support 8.

In addition, the bolt 55 is screwed into the screw hole 54 of the inner closing member 53 by penetrating the anti-separation plate 56 disposed on the left and right inner end side of the bearing member 20. The fall prevention from the bearing member 20 of the coaxial 27 is aimed at.

In the rocking frame 9 having the above-described configuration, the front and rear idler support portions 24 and 25 of the main frame 26 are connected to the truss by the forward and backward connecting members 28 and 29 made of square pipes. By using a structure (Truss Structure), strength is secured.

This crawler type traveling apparatus 2 is provided with the rocking | fluctuation restricting means which regulates the rocking | fluctuation more than the predetermined range around the rocking shaft 27 of the rocking frame 9. The rocking restricting means includes a rocking plate 57 which can be rocked integrally with the rocking frame 9, a rocking limit opening 58 formed in the rocking plate 57, and a corner portion of the rocking limit opening 58. A rocking regulator 59 for contacting (58a, 58b) to regulate the swing of the rocking plate 57 or more in a predetermined range, and an outer limiting member (60) attached to the rocking regulator (59).

The rocking plate 57 is arrange | positioned on the outer side of the support plate 18 of the left-right direction outer side of the frame support body 8 so that a plate surface may face left-right direction (from the left-right direction to a face shape).

A shaft insertion through-hole 61 is formed in the rear part side of this rocking plate 57, The rocking shaft 27 is inserted through this shaft insertion hole 61 from the left-right direction inner end side, and is rocking plate at the same time. 57 contacts left and right inner surfaces of the upper side (the swing shaft 27 side) of the front connecting member 28 and the rear connecting member 29 and the upper end of the inner member 49 of the intermediate connecting member 30. The rocking plate 57 is fixed to the rocking shaft 27, the front connecting member 28, the rear connecting member 29, and the inner member 49 of the intermediate connecting member 30.

In addition, the front end side of the swinging plate 57 and the front lower end side of the front connecting member 28 are connected by a reinforcing member 62 made of an angle material.

In addition, the swinging plate 57 is in contact with the left-right direction outer end side of the bearing member 20 of the frame support 8.

Moreover, the front part side of the rocking plate 57 is protruded forward from the rocking shaft 27, and this front part side is comprised so that it may rock up and down around the rocking shaft 27, and the rocking opening opening 58 Is a front side of the swing shaft 27 and is formed at a position corresponding to the side of the extension mounting portion 21 of the support plate 18 on the right and left outside of the frame support 8.

The swing regulator 59 is an outer surface of the extension mounting portion 21 of the support plate 18 on the right and left outside of the frame support 8 and is welded and fixed at a position corresponding to the swing restriction opening 58 in the left and right directions. At the same time, the swing restricting member 59 is provided with an engaging portion 63 inserted into the swing restricting opening 58.

Therefore, when the rocking frame 9 swings around the rocking shaft 27, the front part side of the rocking plate 57 is rocked up and down integrally, and the upper and lower edge portions 58a and 58b of the rocking restricting opening 58 ( The edge of the swinging direction) comes into contact with the engaging portion 63 to restrict the swinging of the swinging frame 9 over a predetermined range.

The coupling portion 63 is provided with a front and rear pair of screw holes 64 formed from the left and right outer sides thereof.

In addition, the fluctuation regulator 59 is provided with an inner restriction part 65 located on both front and rear sides of the engaging portion 63 and opposed to the left and right inner surface of the swing plate 57, and the inner restriction part 65 is provided. ) Is coupled to the swinging plate 57 to restrict movement of the swinging frame 9 in the left and right directions.

The outer regulating member 60 is formed of a plate material so that the plate thickness direction coincides with the left and right direction on the left and right direction outer side of the engaging portion 63 of the rocking regulator 59 and the left and right direction outer side of the rocking plate 57. The outer restricting member 60 is mounted to the swing restricting body 59 by a bolt 66 which is disposed and penetrates through the outer restricting member 60 and is screwed into the screw hole 64 of the engaging portion 63. It is fixed.

The outer restricting member 60 is formed to have a longer front and rear width than the swing restricting opening 58, and the front and rear sides of the outer restricting member 60 are coupled to the swinging plate 57 so that the left and right sides of the swinging frame 9 are fixed. Movement outward is regulated.

In the rocking restricting means of the above-described configuration, it is possible to simply form a structure having a function of regulating a rocking motion of a predetermined range or more of the rocking frame 9 and a function of restraining the movement of the rocking frame 9 in the left and right directions. have.

Moreover, there is little possibility that soil will accumulate in the fluctuation restricting opening 58, and there is also very little that the fluctuation of the swing frame 9 is inhibited by the dirt accumulated by the fluctuation restricting means.

In addition, since the front and rear connecting members 28 and 29 are inclined, and the rocking plate 57 is fixed to the inner surfaces of the front and rear connecting members 28 and 29, the outer surface of the rocking plate 57 Soil is less likely to accumulate on the front and rear connecting members 28 and 29.

Moreover, the through hole 67 penetrated in the up-down direction is formed in the rocking regulator 59, and it is comprised so that it may be hard to accumulate soil on the rocking regulator 59. FIG.

Since dirt is hard to accumulate in a fluctuation regulation means and its surroundings, the effect of being easy to wash a car is also exhibited.

As shown in FIGS. 10 to 13, in the crawler type traveling device 2, a scraper for removing dirt on the inner circumferential surface 14a side of the crawler belt 14 to the side of the crawler belt 14. The apparatus 161 may be provided.

The scraper apparatus 161 is provided in the outer part of each crawler-type traveling apparatus 2 on either side, and the engaging hole 16 of the inner peripheral surface 14a of the crawler belt 14 of each crawler-type traveling apparatus 2 on the left and right sides. It is provided so as to remove the mud from the left and right direction outer side (more specifically, the outer side from the outside front wheel rolling surface 170).

Moreover, the scraper apparatus 161 is provided also in the inner part of each crawler type traveling apparatus 2 of right and left, and the coupling hole (of the inner peripheral surface 14a of the crawler belt 14 of each crawler type traveling apparatus 2 of right and left) 16), the mud in the left and right direction may be removed.

The scraper device 161 is provided with a mounting table 162 fixed to the main frame 26 of the swinging frame 9, and the mounting table 162 removes soil on the inner circumferential surface 14a of the crawler belt laterally. With a scraper 163 mounted to be repositionable from the use position to the retracted position retracted from the use position, and an unstable switching spring 164 holding the scraper 163 repositionably to the use position and retracted position. It is mainly composed.

The mounting table 162 is formed of a plate material and includes a substrate portion 165 and a pair of upper and lower mounting walls 166 provided on the substrate portion 165. In this embodiment, the rear idler 11 is provided. It is mounted on the mounting part of the.

The board part 165 of this mounting base 162 is the left-right direction outer side of the rear idler 11, and the back surface side of the rear idler 11 so that a plate surface may face left-right direction (plate thickness direction may correspond to a left-right direction). And a concave portion 168 which is recessed rearward from the up-down middle portion on the front end side to avoid the bearing portion 167 supporting the rear idler 11, and the mounting wall 166 is formed at the front portion thereof. Is located above and below the concave portion 168 on the front end side of the substrate portion 165, and is integrally formed so as to extend outward from the front edge of the substrate portion 165 in the horizontal direction.

In addition, the upper and lower mounting walls 166 are polymerized from the rear side to the mounting member 45 supporting the rear idler 11, and the mounting member 45 is mounted to the mounting wall 44c of the rear support bracket 44. It is commonly fastened by the bolt 23B for this purpose, and the mounting table 162 is attached to the rear support bracket 44 by this.

The scraper 163 is fixed to the rocking member 169 that is rockably supported by the substrate portion 165 of the mounting table 162.

A pair of upper and lower support pieces 171 are provided on the rear end side of the mounting portion 162 on the left and right outer surface side of the substrate portion 165, and the support members 171 are provided on the rocking members 169 on the respective support pieces 171. A supported piece 173 is rotatably supported around an axis of the support shaft 172 through 172, and the axis of the support shaft 172 is inclined to move backwards as it goes upward. Moreover, it does not incline with respect to the left-right direction.

When the scraper 163 is located at the use position, the rocking member 169 is located at the rear side of the substrate portion 165 of the mounting table 162 so that the plate thickness direction coincides with the left and right directions. By contacting the bottom surface with the rear end surface of the substrate portion 165, the rotation of the swinging member 169 to the rear idler 11 side is restricted, and the swinging member 169 is capable of swinging forward from the position. Is rotated to the front side so that the scraper 163 is configured to change its position to the retracted position in the state along the rear idler 11 on the outside of the rear idler 11, and thus the scraper 163 has a support shaft ( By rotating around 172, the position is changed to the use position and the retracted position.

The scraper 163 includes a scraper blade 174 and a blade support 175 for supporting the scraper blade 174, and these scraper blade 174 and the blade support 175 are formed of a band plate. .

The scraper blade portion 174 and the blade support portion 175 of the scraper 163 are disposed to protrude from the swinging member 169 to the left and right direction outward at the use position, and the left and right inner end side of the blade support portion 175 is disposed. It is fixed to the upper part of the outer surface of this rocking member 169 by welding etc., and the scraper 163 is provided floating from the part which the crawler belt 14 grounds, and the crawler belt 14 is used in the use position. It is comprised so that the scraper 163 may not be influenced by the unevenness | corrugation of the ground surface to ground.

In the scraper 163, one corner portion 174a along the longitudinal direction of the scraper blade portion 174 is disposed substantially parallel to the inner circumferential surface 14a of the crawler belt 14 in the use position, and the edge portion thereof. As the part 174a goes to the left-right direction A (direction toward the edge part of a left-right direction from the left-right direction center part of the crawler belt 14) as shown to FIG. 13A, the crawler belt 14 It is arrange | positioned so that it may become the inclined shape shifting to the forward rotation direction B of the, and it will load to the inner peripheral surface 14a of the crawler belt 14 by rotating the crawler belt 14 in the arrow B direction so that the tractor 1 may advance. Soil is guided out of the left and right by the scraper blade 174 is configured to be excluded.

Moreover, in the use position, the edge part 174a of the side corresponding to the inner peripheral surface 14a of the crawler belt 14 of the scraper blade part 174 contacts the inner peripheral surface 14a of the crawler belt 14 (slip contact). It may be arrange | positioned so that it may be provided, or it may be arrange | positioned so that it may not contact (slip contact) the inner peripheral surface 14a of the crawler belt 14. As shown in FIG.

The blade support 175 is disposed to match the scraper blade portion 174 in the longitudinal direction and the plate thickness direction, and is polymerized on the upper surface side of the scraper blade portion 174 and the crawler belt inner peripheral surface 14a of the scraper blade portion 174. The edge part 174a of the side corresponding to) is arrange | positioned so that it may protrude (protrude) from the blade support stand 175 to the crawler belt inner peripheral surface 14a side.

In addition, the scraper blade 174 is fixed to the blade support 175 by a fastener composed of a pair of bolts and nuts in the longitudinal direction, and the scraper blade 174 is attached to the inner circumferential surface 14a of the crawler belt 14. The bolt insertion through hole 177 formed in the blade support 175 is constituted by a long hole so as to be able to move forward and backward (close to and space apart).

By advancing and adjusting the scraper blade portion 174 with respect to the inner circumferential surface 14a of the crawler belt 14, the scraper blade portion 174 can be made the optimum position with respect to the crawler belt 14, and at the same time, the outer peripheral surface of the rear idler 11 When the crawler belt 14 approaches the scraper blade portion 174 due to the wear, the scraper blade portion 174 is positioned in the retracting direction with respect to the crawler belt 14 to thereby adjust the scraper blade portion 174 to the crawler belt ( 14) can be adjusted to the optimum position.

In this embodiment, the scraper blade portion 174 is a direction orthogonal to the inner circumferential surface 14a of the crawler belt 14 as shown in FIG. 13B and is wound in a direction away from the crawler belt 14. In accordance with this, the inclined shape shifts in the forward circumferential direction B (upward).

In addition, it is not limited to this, You may arrange | position the scraper blade part 174 orthogonal to the inner peripheral surface 14a of the crawler belt 14 in a use position.

The unstable switching spring 164 is comprised by the tension coil spring, one end side is engaged with the spring hook part 178 fixed to the left-right direction outer end side of the blade support stand 175 in a use position, and the other end Is engaged with the spring hook portion 179 fixed to the upper rear end portion of the substrate portion 165 of the mounting table 162, wherein the shaft center of the unstable switching spring 164 is rearward of the shaft core of the support shaft 172. Since it is located on the side, the unstable switching spring 164 presses the scraper 163 in the direction to rotate the back side (the crawler belt inner circumferential surface 14a side), and the front end face of the rocking member 169 is the substrate portion 165. Since the rotation is regulated in contact with the rear end surface of the back side), the rotation of the scraper 163 to the rear side is restricted, whereby the scraper 163 is held in the use position.

In addition, when the scraper 163 is rotated to the front side around the support shaft 172 from the use position to the retracted position, if the shaft center of the unstable switching spring 164 exceeds the shaft center of the support shaft 172, it is unstable switching. The pressing direction of the spring 164 is switched (the pressing direction of the unstable switching spring 164 is switched around the axis of the support shaft 172), and the unstable switching spring 164 moves the scraper 163 to the rear idler. Pressurization is made to rotate in the direction approaching (11).

In this case, when the scraper 163 (or unstable switching spring 164) comes into contact with the contact portion on the side of the mounting table 162, the swing of the scraper 163 is restricted as shown by the virtual line in FIG. 163 is held in the retracted position (which is configured such that scraper 163 and unstable switching spring 164 do not contact rear idler 11).

In the scraper device 161 having the above-described configuration, since the position can be changed between the use position and the retracted position, the scraper 163 is traveling during the work in the paddy field by setting the scraper 163 to the retracted position. When it comes out of the paddy field, the mud attached to the inner circumferential surface 14a of the crawler belt 14 is scrapered by rotating the crawler belt 14 several times forward with the scraper 163 in the used position. 163 is automatically guided out of the crawler belt 14 and scraped off, and it is comprised so that it is not necessary to scrape the said mud with a human hand.

Moreover, since the scraper 163 is comprised so that it may be hold | maintained in each position of a use position and a retracted position by the pushing force of the unstable switching spring 164 (so that an unstable switching mechanism may unstable switch to a use position and a retracted position). When the tractor 1 is retracted with the scraper 163 in the use position, and the impact force (excessive force) is applied to the scraper 163 due to the crawler belt 14 being touched by something, The scraper 163 is rotated and relieved in the retracted position in response to the pressing force of the unstable switching spring 164 to avoid damage to the scraper 163 or the crawler belt 14.

In addition, since the front side of the crawler belt 14 is lifted when passing over the convex portion of the rice field, the mud loaded on the front side side of the lower part of the crawler belt 14 falls to some extent, but the The mud loaded on the rear side of the lower part is hard to fall off, and this can be efficiently dropped by the scraper 163 provided on the side of the rear idler 11.

In addition, since the scraper 163 rotates forward around the rear obliquely shaped shaft center and changes its position from the use position to the retracted position, the scraper 163 is retracted from the ground plane to a high position, and mud adheres to the scraper 163 itself at the retracted position. It is considered to be difficult.

Moreover, you may employ | adopt the scraper apparatus 161 to the crawler type traveling apparatus of a full crawler type.

As the traveling vehicle to which the crawler type traveling device 2 according to the present invention is employed, a vehicle other than the tractor 1 may be used, and the crawler type traveling device 2 may be provided in place of the front wheel.

1 is a side view of a crawler type traveling device.

Figure 2 is a side view of a tractor equipped with a crawler type traveling device.

3 is a side view of the frame support and the rocking frame.

4 is a rear view of the crawler type traveling device.

5 is a side view of the rocking frame.

6 is a partially broken plan view of the rocking frame.

FIG. 7A is a partial cross-sectional rear view of the rocking frame, and FIG. 7B is a cross-sectional view taken along the line A-A of FIG.

Figure 8 (a) is a side view of the frame support, Figure 8 (b) is a partial cross-sectional rear view of the frame support.

Fig. 9A is a view of a member represented by the arrow B in Fig. 1, Fig. 9B is an enlarged side view of the rocking restricting means, and Fig. 9C is a plan sectional view of the rocking limiting means.

10 is a side view of a crawler type traveling device having a scraper.

11 is a side view of the scraper device.

12 is a plan view of the scraper device.

Fig. 13 is a schematic configuration diagram showing the arrangement of a scraper belt on a blade portion of a scraper;

<Explanation of symbols for main parts of the drawings>

1: tractor (driving vehicle)

1A: Body

5: axle (rear axle)

8: frame support

9: rocking frame

10: front idler

11: rear idler

12: front wheel

13: driving wheel

14: crawler belt

24: front idler support

25: rear idler support

26: main frame

27: rocking shaft

28: front connecting member

29: rear connection member

30: intermediate connecting member

Claims (13)

A frame support 8 fixed to the vehicle body 1A side of the traveling vehicle 1, A rocking frame 9 supported by the frame support 8 so as to be swingable around an axis in the left and right direction through a rocking shaft 27, A front idler 10 and a rear idler 11 supported by the swinging frame 9, A plurality of front wheels 12 disposed between the front idler 10 and the rear idler 11 and supported by the swing frame 9; A drive wheel 13 disposed above the plurality of front wheels 12 and supported by the axle 5 on the vehicle body 1A side; By driving the drive wheel 13 by the axle 5 in rotation, the crawler belt wound over the drive wheel 13, the front idler 10, the rear idler 11, and the plurality of front wheels 12. A crawler type traveling device configured to be driven 14, The rocking frame 9 is equipped with a front idler support 24 supporting the front idler 10, a rear idler support 25 supporting the rear idler 11, and the plurality of front wheels 12. A main frame 26 and the swing shaft 27 disposed above the main frame 26, wherein the swing frame 9 further includes the swing shaft 27 and the front idler support portion. A front connection member 28 for connecting 24 and a rear connection member 29 for connecting the oscillation shaft 27 and the rear idler support 25; The front and rear connecting members 28 and 29 and the main frame 26 are configured such that an opening is opened between the front and rear connecting members 28 and 29 and the main frame 26 in a left and right direction. A rocking plate 57 having a plate surface facing in the left and right direction and disposed on the outside in the left and right directions of the frame supporter 8 is integrally rocked on the rocking frame 9, and the rocking plate 57 is controlled to rock. An oscillation regulating body 59 having a coupling portion 63 inserted into the oscillation regulating opening 58 is fixed to the frame support 8, and the oscillating frame 9 is formed. The crawler characterized in that the oscillation of the oscillation frame 9 is controlled by the corner portions 58a, 58b in the oscillation direction of the oscillation regulating opening 58 contacting the engaging portion 63 when oscillating. Type driving device. delete delete delete delete delete delete 2. An inner restricting portion (65) according to claim 1, wherein an inner restricting portion (65) is provided in said oscillating regulator (59) for regulating movement of the oscillating frame (9) in the left and right direction by engaging the oscillating plate (57), It is disposed outside the left and right directions of the swing plate 57 and is fixed to the engaging portion 63 of the swing restricting body 59 so as to be coupled to the swing plate 57 so that the swing frame 9 is left and right directions. A crawler type traveling device, comprising: an outer restraining member (60) that regulates movement to the outside. The crawler type traveling device according to claim 1, wherein the swinging plate (57) is fixed to the left and right inner surfaces of the upper side of each of the front connecting member (28) and the rear connecting member (29). . The crawler belt according to claim 1, wherein the scraper 163 for excluding the soil on the inner circumferential surface 14a side of the crawler belt 14 to the side of the crawler belt 14 on the main frame 26 side. A crawler type traveling device, characterized in that the position of the inner circumferential surface (14a) is supported so as to be changeable to a use position for laterally excluding and a retracted position withdrawn from the use position. The crawler type traveling device according to claim 10, wherein the scraper (163) is attached to a mounting portion of the rear idler (11) at a distance from a portion to which the crawler belt (14) is grounded. 12. The scraper 163 according to claim 10 or 11, wherein the scraper 163 is a scraper blade portion 174 acting on the soil of the inner circumferential surface 14a of the crawler belt 14, and a blade portion for supporting the scraper blade portion 174. The supporter 175 is provided, and the scraper blade portion 174 is supported by the blade supporter 175 so as to be movable in a direction approaching and away from the inner circumferential surface 14a of the crawler belt 14. Crawler type traveling device. The method according to claim 10 or 11, wherein the scraper 163 is rotated about the support shaft 172 to change the position to the use position and the retracted position, It is maintained at the use position or the retracted position by the pressing force of the spring 164, the pressing direction is switched on the support shaft 172 as a boundary, A crawler type traveling device, configured to change position from the use position to the retracted position by a load exceeding a set value.

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