JP2010120588A - Walking type crawler work machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a walking type crawler work machine capable of successfully rotating by a rotating means having a simple mechanism without using an operator's manpower, or only with the force added by an operator. <P>SOLUTION: The walking type crawler work machine 1 includes a snow plough section 2 arranged at the front of a machine body frame 6, a crawler traveling section 4 arranged at a lower part of the machine body frame 6, a drive unit 3 for driving the snow plough section 2 and the traveling section 4, and an operation control section 5 for operating the snow plough section 2 and the traveling section 4. A grounding member 10 is provided in the right and left both sides of the longitudinal intermediate part of the traveling section 4 via a lifting means 7, so that the lifting means 7 is interlocked and connected to the right/left turning operation means 8. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a turning technique for a walking type crawler working machine such as a snowplow and a mower provided with a crawler type traveling device.

Conventionally, as a walk-type crawler type work machine, for example, a snowplow has a snow removing part at the front, a traveling part below the body, a driving part above the body, a driving operation part at the rear of the body, and can perform snow removal work while traveling. It is configured to be able to.
In the case of a walking type snowplow, in a small snowplow not equipped with a turning device such as a side clutch, a driving handle provided at the rear part of the fuselage frame is applied so that the operator can turn the force left or right. In some cases, the snowplow turns.
Moreover, in the snowplow described in Patent Document 1, an engine is mounted on a body frame, and a hydrostatic continuously variable transmission for traveling and a transmission case are disposed on the lower surface side of the body frame. A configuration in which a pair of left and right chain cases are fitted on output shafts protruding left and right from the transmission case, and a driving force is transmitted from the output shafts to the rear drive shafts for the left and right crawler type traveling devices via the chain cases. Adopted. In the mission case, a pair of left and right side clutches are provided, and by operating the lever, the side clutch inside the turning is disengaged and one side (the inside of the turning) of the left and right crawlers is stopped to remove snow in that direction. Techniques for turning the machine are known.
JP 2000-54335 A

  In the conventional walking type crawler type working machine with a side clutch function, the manufacturing cost is high because the transmission with the clutch is used. In addition, in a walk-type crawler work machine that does not have a side clutch function, the turning operation is performed by the operator's human power during turning, and thus there are cases where the turning cannot be performed well.

  In view of the above situation, the present invention provides a walking type crawler type work machine that can turn well with a simple turning mechanism without using the human power of the operator or simply by applying the force of the operator. Objective.

  The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described.

  That is, in claim 1, a working unit disposed at a front portion of the body frame, a crawler type traveling unit disposed at a lower portion of the body frame, and a driving unit that drives the working unit and the traveling unit. A walking crawler working machine having a working unit and a driving operation unit for operating the traveling unit, grounding bodies are provided on both left and right sides of the front and rear halfway portion of the traveling unit via lifting means, The elevating means is interlocked with the left / right turning operation means.

  According to a second aspect of the present invention, the lifting means is an arm, a grounding body is provided at the tip of the arm, and the arm can be rotated in the front-rear direction.

  According to a third aspect of the present invention, the elevating means is an arm, a grounding body is provided at the tip of the arm, and the arm can be rotated in the left-right direction.

  According to a fourth aspect of the present invention, the elevating means is a piston, a grounding body is provided at the tip of the piston, and the piston can be moved in the vertical direction.

  As effects of the present invention, the following effects can be obtained.

  In claim 1, by operating with the left and right turning operation means, the grounding body is lowered and the traveling part on one side of the left and right is lifted, and it is possible to easily turn the walking crawler type work machine, Depending on how it is operated, the walk-type crawler working machine can be turned in a warm and sudden manner. Further, when the side clutch mechanism is used, the gear wears due to a complicated configuration, but in the present invention, a simple configuration can be achieved.

  According to the second aspect of the present invention, since the arm can be rotated in the front-rear direction, there is little resistance during traveling with respect to the grounding body, and the elevating means is not easily damaged. In addition, since the structure of the lifting / lowering means is simple, the left / right turning means can be manufactured at low cost.

  In Claim 3, since the structure of the raising / lowering means is simple, the left-right turning means can be manufactured at low cost.

  In Claim 4, since the structure of the raising / lowering means is simple, the left-right turning means can be manufactured at low cost. In addition, there is no difference in operating force between forward turning and backward turning, and a stable walking crawler work machine can be turned.

Next, an embodiment of the invention will be described for a snowplow as a walking crawler working machine.
FIG. 1 is a side view showing the overall configuration of a snowplow according to Embodiment 1 of the present invention, FIG. 2 is a rear view showing the periphery of the lifting means, and FIG. 3 is the lifting means and left and right according to Embodiment 1. 4 is a side view showing the rotation of the arm, FIG. 5 is a side view showing the periphery of the lifting / lowering means and the left / right turning operation means according to the second embodiment, and FIG. FIG. 7 is a rear view showing the periphery of the lifting means according to the third embodiment, and FIG. 8 is a side view showing the periphery of the lifting means and the left and right turning operation means.

  The overall schematic configuration of the snowplow 1 according to the present invention will be described below. For the sake of explanation, the direction of the arrow A in the figure is defined as “front”, and the left, right, and rear are determined toward the front.

  As shown in FIG. 1, the snow removal machine 1 mainly includes a snow removal unit 2, a drive unit 3, a traveling unit 4, a driving operation unit 5, and the like.

As shown in FIG. 1 or FIG. 2, the snow removal unit 2 is disposed at the front part of the body frame 6 at the approximate center of the snow removal machine 1 and removes snow in front of the snow removal machine 1.
The snow removal unit 2 mainly includes a blower cover 21, a blower 22, a snow throwing chute 23, a snow throwing cap 24, a take-in auger 25, an auger cover 26, and the like.

The blower cover 21 is connected to the front part of the body frame 6, and the auger cover 26 is connected to the front part of the blower cover 21.
The blower 22 is provided in the blower cover 21, and the take-in auger 25 is provided in the auger cover 26.
A snow throwing chute 23 that protrudes upward is arranged on the upper portion of the blower cover 21 so as to be turnable in the left-right direction. Further, a snow throwing cap 24 is disposed on the snow throwing chute 23 so as to be rotatable up and down.

  The scraping auger 25 and the blower 22 of the snow removal unit 2 are simultaneously driven by the driving unit 3 described later. As the scraping auger 25 rotates, the snow in front is crushed and scraped into the left and right center of the scraping auger 25. The scraped snow is splashed upward by the blower 22 and discharged in an arbitrary direction by the snow throwing cap 24 while being guided upward by the snow throwing chute 23.

  The driving unit 3 generates a driving force and transmits the driving force to the snow removal unit 2 and the traveling unit 4. The drive unit 3 mainly includes an engine 31, a transmission device 32, and the like.

In the drive unit 3, a transmission 32 is disposed inside the body frame 6, and the engine 31 is placed on the upper part of the body frame 6. The power of the engine 31 is transmitted from a pulley (not shown) fitted to the output shaft protruding from the engine 31 to the snow removal unit 2 and the transmission 32 via a belt-type power transmission mechanism.
The blower 22 and the take-up auger 25 are configured to be rotationally driven by the power of the engine 31 transmitted to the snow removal unit 2. The power transmitted to the transmission device 32 is shifted by the transmission device 32 and then transmitted to the drive shafts 42 and 42, which will be described later, so that the drive sprockets 41 and 42 fitted on the drive shafts 42 and 42 are installed. 41 is configured to be rotationally driven.

  The traveling unit 4 is a means for traveling the snowplow 1 and mainly includes a drive sprocket 41, a drive shaft 42, a driven sprocket 43, a rear axle 44, a crawler belt 45, and the like at the lower left and right sides of the body.

In the traveling unit 4, a drive shaft 42 is horizontally supported on the lower front portion of the body frame 6, and a rear axle 44 is rotatably supported on the rear lower portion of the body frame 6.
Drive sprockets 41 and 41 are fitted to both ends of the drive shaft 42, and driven sprockets 43 and 43 are fitted to both ends of the rear axle 44. An endless crawler belt 45 is wound around the drive sprocket 41 and the driven sprocket 43.
Therefore, the traveling unit 4 is formed by a crawler type traveling device, and the pair of left and right crawler type traveling devices is driven by the rotational drive of the drive shaft 42.

The driving operation unit 5 is for performing a driving operation related to traveling and snow removal work of the snow removal machine 1, and is disposed at the rear of the body of the snow removal machine 1.
The driving operation unit 5 mainly includes a steering handle 51, an operation box 52, a travel clutch lever 53, a snow removal clutch lever 54, a chute operation lever 55, an accelerator lever 56, a travel speed change lever 57, a snow throwing up / down change lever 59, and the like. It has.

Steering handles 51 and 51 protrude from the driving operation portion 5 obliquely rearward and upward from both sides of the rear portion of the body frame 6. Grips 51a and 51a are fixed to the upper ends of the steering handles 51 and 51, respectively.
The operation box 52 is disposed between the left and right steering handles 51, 51 in plan view.
The operation box 52 is provided with a traveling clutch lever 53, a snow removal clutch lever 54, a traveling speed change lever 57, a snow throwing up / down changing lever 59, and the like.
The travel clutch lever 53 performs a power transmission on / off operation from the engine 31 to the travel unit 4, and the snow removal clutch lever 54 performs a power transmission on / off operation from the engine 31 to the snow removal unit 2. The travel shift lever 57 performs a shift operation by the transmission 32, and the snow throwing up / down changing lever 59 performs an operation of changing the angle of the snow throwing cap 24.
A chute operating lever 55 for turning the snow throwing chute 23 is disposed below the operation box 52.

  Further, both the travel clutch lever 53 and the snow removal clutch lever 54 are provided in the vicinity of the grips 51a and 51a. Therefore, the travel clutch lever 53 and the snow removal clutch lever 54 can be gripped and operated while gripping the grips 51a and 51a. The traveling clutch lever 53 and the snow removal clutch lever 54 are deadman clutch levers that stop when the traveling clutch or the snow removal clutch is actuated when released together with the grips 51a and 51a.

The above is the basic configuration of the snow removal machine 1, the operation of each basic configuration, and the movement thereof, and is common to the embodiments described later.
Next, the turning mechanism which is a feature of the present invention will be described in detail in each embodiment.

As shown in FIGS. 1 to 4, the turning mechanism of the snow removal machine 1 according to the first embodiment mainly includes an elevating means 7, a grounding body 10, a left / right turning operation means 8, and the like.
The turning mechanism of the first embodiment is characterized in that the crawler belt 45 on either the left or right side of the traveling unit 4 is lifted from the ground B by the lifting means 7 and the grounding body 10, and the grounding body 10 is used as a fulcrum. It is to turn.

The elevating means 7 is interlocked with the left / right turning operation means 8 to elevate and lower the crawler of the traveling unit 4, and operates the elevating means 7 to rotate the grounding body 10 in the front-rear direction to move up and down. is there.
The elevating means 7 mainly includes an arm 71, a support plate 72, a tension spring 73, and the like.

  The arm 71 is a member for supporting the grounding body 10, and is disposed on both the left and right sides of the body frame 6. One end of the arm 71 is supported by the front-rear midway part on both sides of the body frame 6 so as to be rotatable in the front-rear direction via a rotation shaft 71a. The other end of the arm 71 supports the grounding body 10 so as to be able to rotate in the front-rear direction via the rotating shaft 10a.

Specifically, the grounding body 10 is disposed so that the other end (lower end) of the arm 71 is sandwiched between the two wheels on the left and right, and the two wheels are rotatably supported via the rotating shaft 10a.
However, the arm 71 and the grounding body 10 are arranged and configured so that when the grounding body 10 is below the crawler and touches the ground B and turns, the grounding body 10 is below the center of gravity G of the snowplow 1 in a side view. ing.
Further, the grounding body 10 according to the first embodiment is a rotatable wheel, and the grounding body 10 can be easily grounded by rotating the arm 71 without requiring a large force, or from the ground B. I try to leave.
Moreover, in Example 1, although the grounding body 10 is made into a wheel type | mold, if it plays the role of the fulcrum at the time of turning, a sled, a roller, etc. may be sufficient and it does not limit.

  As shown in FIG. 1, FIG. 3, or FIG. 4, one end of the tension spring 73 is locked to the body frame 6 in front of the arm 71, and the other end is locked to the upper and lower middle part of the front part of the arm 71. ing. Therefore, the arm 71 is urged by the tension spring 73 so as to rotate in the front-up direction.

  On the other hand, support plates 72 are fixed behind the arms 71 on both sides of the body frame 6. In the support plate 72, a guide hole 72a for inserting an operation wire 81 of the left / right turning operation means 8 to be described later is opened through in the front-rear direction.

As shown in FIG. 1 or 3, the left / right turning operation means 8 is means for operating the elevating means 7 (rotating the arm 71 of the elevating means 7 in the front-rear direction). It is disposed between the lifting means 7.
The left / right turning operation means 8 mainly includes a turning operation lever 82, a lever receiver 82a, an operation wire 81, and the like.

The lever receiver 82a is fixed to the steering handle 51 in front of the grip 51a with a screw or the like so as to protrude downward.
The turning operation lever 82 is formed so as to be long in the front-rear direction substantially parallel to the lower side of the grip 51a, and is supported so as to be able to turn up and down via a shaft 82b inserted in the left-right direction into the lever receiver 82a. Further, the turning operation lever 82 is interlocked with the arm 71 of the elevating means 7 via an operation wire 81 described later.

The operation wire 81 is covered with a plastic pipe-like outer casing 81a.
One end of the operation wire 81 is connected to the front end of the turning operation lever 82, and only one end of the outer casing 81a is fixed by a fixing member 81b at the front end of the lever receiver 82a. The other end of the operation wire 81 is inserted into the guide hole 72a of the support plate 72 together with the outer casing 81a, and only the other end of the operation wire 81 protrudes forward and is fixed to the upper and lower middle part of the rear part of the arm 71. The outer casing 81a inserted into the guide hole 72a is fixed to the support plate 72 at the front of the guide hole 72a by a fixing member 81b.

  The arm 71 may be configured to be urged rearward by the tension spring 73 and the support plate 72 to be disposed forward to pull the operation wire 81 from the front, but is not limited thereto.

With this configuration, as shown in FIGS. 3 and 4, for example, when the left turning operation lever 82 is gripped with the grip 51a, the operation wire 81 in the left outer casing 81a is pulled backward. Then, with the movement of the operation wire 81, the left arm 71 connected to the operation wire 81 rotates against the forward biasing force of the tension spring 73 from the state shown in the upper part of FIG. It rotates backward about the shaft 71a. The left arm 71 and the grounding body 10 below the left arm 71 are substantially perpendicular to the ground B as shown in the lower part of FIG. However, a stopper may be provided on the body frame 6 so that the arm 71 is substantially perpendicular to the ground B when the turning operation lever 82 is gripped to the maximum. Further, since the right turn operation lever 82 is not grasped together with the grip 51a, the grounding body 10 is directly above as shown in the upper part of FIG. Is located.
Therefore, as shown in the lower part of FIG. 4, the grounding body 10 below the left arm 71 protrudes below the lower part of the crawler belt 45 and pushes up the left traveling part 4 in the vertical direction by L1.
Since only the right crawler belt 45 is in contact with the ground B, the snowplow 1 uses the difference between the traveling speed of the right crawler and the traveling speed of the grounding body 10 without the driving force on the left side to connect the grounding body 10 on the left side. The fulcrum can be turned to the left.

Further, in the case of a warm turn, the operator may perform an operation for setting the grounding body 10 so that the lower part of the crawler belt 45 is substantially the same height as the ground B and making the crawler grip force small.
In the case of a sudden turn, it is possible for the operator to quickly turn in the turning direction by lowering the grounding body 10 and lifting the crawler of the traveling unit 4 on one side.
In other words, if it is configured to cut off the power on one side by the side clutch during turning as in the past, it is necessary to intermittently operate the side clutch lever to achieve the desired turning radius, which is a stepwise turning. In the present invention, the turning radius can be easily adjusted by adjusting the strength with which the turning operation lever 82 is gripped. Further, since the grounding body 10 is constituted by wheels, by pulling backward with the grounding body 10 lowered, the interlining can be turned, and the turning radius can be further reduced.

  The turning mechanism of the snowplow 1 according to the second embodiment mainly includes an elevating means 7, a grounding body 10, a left / right turning operation means 8 and the like as in the first embodiment (see FIG. 1).

As shown in FIG. 5 or 6, the elevating means 7 is interlocked with the left / right turning operation means 8 to elevate the crawler of the traveling unit 4, and operates the elevating means 7 to move the grounding body 10 up and down. It goes up and down in the direction.
The elevating means 7 mainly includes a piston 74, a support plate 72, an urging spring 75, a cylinder 76, a pulley 77, and the like.

  The cylinder 76 is a member for accommodating a piston 74 described later, and is fixed below the center of gravity G of the snowplow 1 in a side view on both the left and right sides of the lower part of the body frame 6. The cylinder 76 is formed in a cylindrical shape, and has a circular or substantially rectangular through hole 76b in plan view in order to accommodate the piston 74.

The piston 74 is a member that is formed in a columnar or prismatic shape and supports the grounding body 10. The piston 74 protrudes from the upper and lower ends of the piston 76 to the upper and lower sides of the cylinder 76 while being accommodated in the cylinder 76. Yes. An urging spring 75 is fitted on the outer circumference of the cylinder above the piston 74. A locking portion 74 a that is slightly larger than the outer periphery of the piston 74 in plan view is fixed to the upper end of the piston 74 so that the biasing spring 75 does not come out upward.
A protrusion 74b for locking an operation wire 81 to be described later is provided at the rear end of the locking portion 74a.
Further, a wheel-shaped grounding body 10 is supported at the lower end of the piston 74 so as to be capable of rotating in the front-rear direction via a rotating shaft 10a.

Further, like the first embodiment, the grounding body 10 has a wheel shape that can rotate in the straight traveling direction, and resistance to the grounding body 10 is difficult to be applied while the snowplow 1 is traveling.
Further, although the grounding body 10 has a wheel shape, it may be a warp, a roller or the like as long as it serves as a fulcrum during turning, and is not limited.

  The pulley 77 is disposed behind the cylinders 76 on the left and right sides of the body frame 6 so as to be rotatable via a shaft 77a.

  On the other hand, support plates 72 are fixed on the upper and rear sides of the pulleys 77 on both sides of the machine body frame 6. In the support plate 72, a guide hole 72a for inserting an operation wire 81 of the left / right turning operation means 8 described later is opened from the upper rear to the lower front.

With the above configuration, as shown in FIGS. 5 and 6, for example, when the left turning operation lever 82 is gripped together with the grip 51a, the operation wire 81 in the left outer casing 81a is pulled backward. As the operation wire 81 moves, the protrusion 74 b of the left piston 74 connected to the operation wire 81 resists the upward biasing force of the biasing spring 75 from the state shown in the upper part of FIG. Then, the entire piston 74 is pushed downward. As shown in the lower part of FIG. 6, the grounding body 10 below the left piston 74 protrudes below the lower part of the crawler belt 45 and pushes up the left traveling part 4 in the vertical direction by L1.
On the other hand, since the right turning operation lever 82 is not gripped with the grip 51a, the grounding body 10 is directly above. That is, it is located above the contact surface between the crawler belt 45 and the ground B.
Therefore, since only the right crawler belt 45 is in contact with the ground B, the left grounding body 10 is used as a fulcrum by the difference between the traveling speed of the right crawler and the traveling speed of the grounding body 10 without driving force on the left side. , Can turn left.
Further, it is possible to perform a warm turn and a sudden turn by operating in the same manner as in the first embodiment.

  The turning mechanism of the snowplow 1 in the third embodiment is mainly provided with an elevating means 7, a grounding body 10, a left / right turning operation means 8 and the like as in the first embodiment (see FIG. 1). Since the left / right turning operation means 8 has the same configuration as that of the first embodiment, description thereof is omitted.

As shown in FIG. 7 or FIG. 8, the elevating means 7 is interlocked with the left / right turning operation means 8 to elevate the crawler of the traveling unit 4, and operates the elevating means 7 to move the grounding body 10 left and right. It moves up and down by rotating in the direction.
The elevating means 7 mainly includes an arm 71, a support plate 72, a tension spring 73, and the like.

The arm 71 is a member for supporting the grounding body 10, and is disposed on both the left and right sides of the body frame 6. The stay 78 is configured by two plate-like members spaced at a predetermined distance in the front-rear direction, and has upper ends protruding downward on both sides of the body frame 6 below the center of gravity G of the snowplow 1 in a side view. It is fixed.
One end of the arm 71 is sandwiched between two plate-like stays 78 and is supported by the stay 78 so as to be turnable in the left-right direction via a turning shaft 71a. Further, the other end of the arm 71 is fixed to the approximate center of the grounding body 10.

  Further, the grounding body 10 according to the third embodiment is formed in a sled or hemispherical shape that is long in the front-rear direction, and is caught when the grounding body 10 moves up and down, or has a large resistance when the grounding body 10 makes a ground contact with the ground B and turns. It does not become a shape. Moreover, although the grounding body 10 is warped, it may be a wheel or a roller as long as it serves as a fulcrum during turning, and is not limited.

  As shown in FIG. 7, the tension spring 73 is fixed at both ends to the upper and lower halfway part inside the arm 71 and to the body frame 6 inside the body from the arm 71. Therefore, the arm 71 is urged by the tension spring 73 toward the center of the machine body in the left-right direction.

  On the other hand, support plates 72 are fixed on both sides of the body frame 6 in the vicinity of the arm 71. In the support plate 72, a guide hole 72a for inserting an operation wire 81 of the left / right turning operation means 8 described later is opened in the left / right direction.

With the above configuration, as shown in FIGS. 7 and 8, for example, when the left turning operation lever 82 is gripped with the grip 51a, the operation wire 81 in the left outer casing 81a is pulled backward. As the operation wire 81 moves, the left arm 71 connected to the operation wire 81 resists the urging force of the tension spring 73 toward the center of the body, and the outside of the body about the rotation shaft 71a. To turn. The left arm 71 and the grounding body 10 below the left arm 71 are substantially perpendicular to the ground B. However, since the right turning operation lever 82 is not grasped together with the grip 51a, the grounding body 10 is directly above, that is, above the grounding surface between the crawler belt 45 and the ground B.
Therefore, the grounding body 10 below the left arm 71 protrudes below the lower part of the crawler belt 45 and pushes up the left traveling unit 4 in the vertical direction by L1.
As shown in FIG. 7, since only the right crawler belt 45 is in contact with the ground B, the left ground contact is determined by the difference between the traveling speed of the right crawler and the traveling speed of the grounding body 10 having no driving force on the left side. With the body 10 as a fulcrum, it can turn to the left.
Further, it is possible to perform a warm turn and a sudden turn by operating in the same manner as in the first embodiment.

As described above, the snow removing portion 2 disposed at the front portion of the body frame 6, the crawler type traveling portion 4 disposed at the lower portion of the body frame 6, the snow removing portion 2 and the traveling portion 4 are driven. In the snowplow 1 having the driving unit 3 that performs the above operation and the driving operation unit 5 that operates the snow removal unit 2 and the traveling unit 4, the grounding unit 7 is grounded to the left and right sides of the front and rear halfway portion of the traveling unit 4 through the lifting means 7. A body 10 is provided, and the elevating means 7 is configured to be interlocked with the left / right turning operation means 8.
With this configuration, by operating the left / right turning operation means 8, the grounding body 10 is lowered and the traveling unit 4 on one side of the left and right is lifted, so that the snowplow 1 can be easily turned. Depending on the operating condition, the snowplow 1 can be turned warmly and suddenly. In addition, when the side clutch mechanism is used, the gear is worn with a complicated structure, but the structure can be simplified.

The lifting means 7 is an arm 71, and a grounding body 10 is provided at the tip of the arm 71 so that the arm 71 can be rotated in the front-rear direction.
By configuring in this way, the arm 71 can be rotated in the front-rear direction, so that the resistance to the grounding body 10 when traveling is small and the elevating means 7 is not easily damaged. Moreover, since the structure of the raising / lowering means 7 is simple, the left-right turning means can be manufactured at low cost.

The lifting means 7 is an arm 71, and the grounding body 10 is provided at the tip of the arm 71. The arm 71 is configured to be rotatable in the left-right direction.
By comprising in this way, since the structure of the raising / lowering means 7 is simple, the left-right turning means can be manufactured at low cost.

The lifting means 7 is a piston 74, and the grounding body 10 is provided at the tip of the piston 74 so that the piston 74 can move in the vertical direction.
By comprising in this way, since the structure of the raising / lowering means 7 is simple, the left-right turning means can be manufactured at low cost. Further, there is no difference in operating force during forward turning and reverse turning, and the snowplow 1 can be turned stably.

The side view which showed the whole structure of the snow remover which concerns on Example 1 of this invention. The rear view which similarly showed the periphery of the raising / lowering means. The side view which showed the periphery of the raising / lowering means and left-right turning operation means which concern on Example 1. FIG. The figure which similarly showed rotation of the arm. The side view which showed the periphery of the raising / lowering means and left-right turning operation means which concern on Example 2. FIG. The figure which similarly showed the movement of the grounding body. The rear view which showed the periphery of the raising / lowering means based on Example 3. FIG. The side view which similarly showed the periphery of the raising / lowering means and the left-right turning operation means.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Walking type crawler type work machine, snow remover 2 Snow removal part 3 Drive part 4 Traveling part 5 Driving operation part 6 Airframe frame 7 Lifting means 8 Left and right turning operation means 10 Grounding body

Claims (4)

A working unit disposed at the front of the fuselage frame;
A crawler-type traveling unit disposed at a lower part of the body frame;
A drive unit for driving the working unit and the traveling unit;
In the walking crawler type work machine provided with a driving operation unit that operates the working unit and the traveling unit,
A walking crawler working machine characterized in that a grounding body is provided on both the left and right sides of the front and rear halfway portion of the traveling unit via lifting means, and the lifting means is linked to the left and right turning operation means.   The walking type crawler working machine according to claim 1, wherein the elevating means is an arm, a grounding body is provided at a tip of the arm, and the arm is rotatable in the front-rear direction.   The walking type crawler working machine according to claim 1, wherein the elevating means is an arm, a grounding body is provided at a tip of the arm, and the arm is rotatable in the left-right direction. The walking type crawler working machine according to claim 1, wherein the elevating means is a piston, a grounding body is provided at a tip of the piston, and the piston is movable in the vertical direction.

Images