JPH0523831U - Traveling equipment for mobile work equipment - Google Patents

Abstract

(57) [Summary] [Purpose] The height of the traveling vehicle body 1 can be adjusted within the range between the highest position and the lowest position during traveling according to the traveling conditions and the like, while exceeding the lowermost drivable position. The height of the ground can be lowered during transportation, and the design range can be expanded within the limit of the ground height. [Structure] The traveling frame 1 supports a track frame 6 of a crawler 5 through a swing arm 14 so as to be movable up and down, and a swing device 17 of the swing arm 14 is provided on the machine body 1 so that the vehicle height can be adjusted. In the device, the swinging range of the swing arm 14 is set to the range of the lowest descent position where the crawler 5 comes closest to the vehicle body 1 from the highest position where the vehicle body 1 rises to the maximum and the travelable lowest position. Set and swing arm 1
A pin 18 for restricting swinging of the swinging arm 14 in the lowering direction of the vehicle body or traveling of the vehicle body is provided at the lowest position where the vehicle body 1 can travel in the swinging range of 4.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a traveling device in a mobile work machine such as a combine.

[0002]

[Prior Art]

 2. Description of the Related Art Conventionally, as a traveling device for this type of mobile work machine, a vehicle height that can be adjusted according to traveling conditions on the road or in a field is already known, for example, from Japanese Utility Model Laid-Open No. 51-159341. This traveling device includes a track frame that supports a driving wheel, a driven wheel, and a plurality of rolling wheels, and a crawler that is wound around the outer circumference of each of the wheels. A hydraulic cylinder for swinging the swinging arm is provided on the machine body while supporting the swinging movement so that the track frame is moved up and down through the swinging arm by the operation of the hydraulic cylinder. The height of the aircraft with respect to the ground surface of the crawler is adjusted, that is, the vehicle can be adjusted. Further, the range of the hydraulic cylinder in which the swing arm is swung by the hydraulic cylinder is the highest position where the crawler is capable of traveling and the aircraft is highest, and the lowest position where the crawler is capable of traveling and the vehicle is lowest. The vehicle height is set within the range of the position and the vehicle height is adjusted within the range of the highest position and the lowest position according to the traveling conditions.

[0003]

[Problems to be solved by the device]

 However, in the above traveling device, it is possible to adjust the height of the aircraft within the range between the highest rising position and the lowest descending position according to the running conditions, but it is possible to adjust the height beyond the lowest descending position. The vehicle height could not be adjusted. Therefore, when transporting the mobile work equipment mounted on a truck or the like, even if the vehicle height of the mobile work equipment is adjusted to the lowest descent position, the height of the airframe is lowered to the maximum. However, when the height of the ground surface during transportation is exceeded, it is necessary to design the height of the working machine to be that low, and especially when the size of the mobile work machine is demanded to be large. The limitation of size is a bottleneck in accounting.

The present invention has been made in view of the above problems, and an object thereof is to adjust a vehicle height within a range between a maximum ascending position and a most descending position during traveling according to traveling conditions. However, it is possible to lower the ground height during transportation by lowering it to a position beyond the lowest drivable position, and to expand the design range within the constraints of the ground height during transportation. The purpose of the present invention is to provide a traveling device.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention supports a track frame 6 of a crawler 5 on a traveling body 1 through a swing arm 14 so as to be movable up and down, and swings the swing arm 14 on the body 1. In a traveling device for a mobile work machine in which the vehicle height is adjustable by providing a moving device 17, the swinging range of the swinging arm 14 is set to a maximum descending position where the aircraft 1 can travel from a maximum rising position. The crawler 5 is set to the range of the lowest descent position where the crawler 5 is closest to the machine body 1 and cannot travel, and the crawler 5 travels to the lowest position where the machine body 1 can travel in the swing range of the swing arm 14. It is characterized in that a regulation means 18 for regulating the swinging of the swinging arm 14 in the lowering direction of the vehicle body or the traveling of the vehicle body at the time is provided.

[0006]

[Action]

 When the above mobile work equipment is loaded on a truck or the like and transported, the height of the traveling machine body 1 is exceeded by the operation of the swinging arm 14 by the swinging device 17 beyond the lowest descent position where traveling is possible. By adjusting the crawler 5 to the lowest position where the crawler 5 is closest to the machine body 1 and cannot move, the vehicle height of the mobile work machine can be kept within the ground height limit during transportation. The working machine can be made large and the design range can be expanded. Further, when the mobile work machine is made to travel on the road or in the field, it is possible to prevent the machine body 1 from descending beyond the lowest position at the time of traveling via the regulation means 18, so that safety can be ensured.

[0007]

EXAMPLE FIG. 6 shows a combine as an example of a mobile work machine. In the figure, reference numeral 1 denotes a traveling machine body having crawler type traveling devices 2 and 2 on both lower sides thereof. A reaping section 3 is arranged on the front side of No. 1 and a threshing section 4 is mounted on the upper side of the traveling machine body 1.

Further, as is clear from FIGS. 1 and 2, the traveling device 2 includes a crawler 5 and a track frame 6 arranged in the crawler 5, and the front end side of the crawler 5 is provided. The rear end side of the crawler 5 is hung on a drive wheel 8 fixed to a mission shaft extending from the mission case 7, and a driven wheel 10 elastically supported by a tension member 9 on the rear side of the track frame 6. While being wound around, the intermediate portion of the crawler 5 between the drive wheel 8 and the driven wheel 10 is supported by a plurality of rolling wheels 11 provided on the track frame 6.

[0009] Furthermore, lateral members 12, 12 that extend in the lateral direction of the vehicle body and have their tips protruding into the crawler 5 are fixed to the lower front and rear portions of the vehicle body 1, and these lateral members 12, 1 are fixed. Support shafts 13 and 13 extending in the same direction as the transverse members 12 and 12 are supported on the lower side of 2 via a plurality of bearing members, and the support shafts 13 and 13 are provided with first arm members 14a, respectively. Two swinging arms 14, 14 provided with a second arm member 14b are rotatably inserted, and the side of the first arm members 14a, 14a of the swinging arms 14, 14 is the above-mentioned. The front and rear portions of the track frame 6 are connected to each other via shaft rods 15 and 15, respectively, while the tip ends of the second arm members 14b and 14b of the swinging arms 14 and 14 are provided on the lateral members 12 and 12, respectively. Each insertion hole 12a, 12a From above, the protruding tips are connected to each other via a connecting rod 16. Further, a swinging device 17 composed of a hydraulic cylinder is provided in the machine body 1 at an intermediate portion in the front-rear direction of the track frame 6, and a second swinging arm 14 provided on the rear side of the track frame 6 is provided. The arm member 14b is extended above the connecting portion of the connecting rod 16, and the upward extending portion is connected to the piston rod 17a of the rocking device 17.

Then, by moving the piston rod 17 a of the swinging device 17 forward and backward, the rear swing arm 14 is swung, and along with this, the front swing arm via the connecting rod 16. 14 is oscillated in the same direction, and the track frame 6 is moved up and down by the oscillating of the oscillating arms 14 and 14 to adjust the height of the machine body 1 with respect to the ground surface of the crawler 5, that is, the vehicle height adjustment. To do. In FIG. 1, reference numeral 20 denotes a guide carrier roller supported by the rear lateral rod 12.

In the above traveling device, however, the swing range of each of the swing arms 14 by the swing device 17 exceeds the maximum descent position at which the machine body 1 can move up to the maximum descent position. The crawler 5 is set to a position in which the crawler 5 is closest to the machine body 1 and is in the lowest descent position where the vehicle cannot travel, and the crawler 5 travels to the lowest position in which the crawler 5 can travel in the swing range of the swing arms 14. A regulating means 18 for regulating the swinging of the swinging arms 14 in the lowering direction of the body or the traveling of the body is provided.

Specifically, as shown in FIG. 2, the piston rod 17a of the rocking device 17 is advanced to the maximum extent, and each rocking arm 14 is indicated by a chain double-dashed line in FIG. When it is rocked to the rearmost side, the track frame 6 is lowered via the rocking arms 14, and the driven wheels 10 and the rolling wheels 11 provided on the track frame 6 are accordingly moved down. By pushing the crawler 5 as a whole downward through the intermediary of the crawler 5, the body 1 can be adjusted to the highest position where the machine body 1 is highest, as shown by the chain double-dashed line a in FIG. 1 and FIG. Further, when the piston 17a of the rocking device 17 is advanced to the intermediate position and the rocking arms 14 are rocked to the positions indicated by the solid lines in FIG. Ascending through the arm 14, the crawler 5 as a whole ascends via the driven wheels 10 and the rolling wheels 11 provided on the track frame 6, and the solid line b of FIG. 1 and FIG. As shown, the body 1 can be adjusted to the lowest position where it can travel.

Further, the piston rod 17a of the swinging device 17 can be retracted to the frontmost side beyond the position indicated by the solid line in FIG. By swinging each swinging arm 14 to the position indicated by the one-dot chain line in FIG. 2, the track frame 6 is moved to the highest position beyond the solid line position in FIG. 2 via each swinging arm 14. The crawler 5 as a whole is moved to the upper side beyond the solid line B in FIG. 1 through the driven wheels 10 and the rolling wheels 11 provided on the track frame 6 accordingly. As a result of this rise, the rear upper part of the crawler 5 is adjusted to a position where it overlaps with the machine body 1 and the machine body 1 cannot run, as shown by the dashed-dotted line C in FIG. 2 and FIG. When However, the vehicle height is adjusted to the lowermost position where the vehicle height becomes lower than the above-mentioned lowest drivable position.

Further, as the regulation means 18 for regulating the swinging of the swinging arms 14, for example, a removable pin is used. When it is located at the lowest position where it can travel, it contacts the swinging arms 14 to restrict further swinging of the swinging arms 14. It is attached to the attached bracket. Therefore, by restricting the swing of each swing arm 14 using the pins as described above, it is possible to prevent the aircraft 1 from further descending from the lowest drivable position with a simple structure. It is possible to ensure safety when driving, but it is also possible to regulate by using a stopper that electrically operates using a solenoid.

When the pin or stopper is used, a switch for detecting the regulated state of the pin or stopper is provided, and when the switch is turned off, that is, the swing arm 14 is regulated by the pin and the stopper. If the traveling clutch (electromagnetic clutch) is not turned on when the vehicle is not in operation, it is possible to prevent the drive wheels 8 from being forcibly driven at the lowest position where traveling is not possible, so that more safety can be secured. Further, although the above-mentioned restricting means 18 is constituted by using a pin or a stopper, the rocking arm 14 is not moved on the rocking locus of the rocking arm 14 without using a pin or a stopper. A switch is provided which is turned on by contacting the swinging arm 14 when the vehicle reaches the lowermost drivable position, and the traveling clutch is disengaged by turning on the switch to restrict traveling at the lowest descentable position. It may be configured to do so.

Next, the operation of the traveling device configured as described above will be described. First, when the above combine is traveled on the road or in the field, it is prevented via the restriction means 18 that the machine body 1 goes down beyond the lowest position at the time of travel. Therefore, the body 1 can be moved up and down as shown by the two-dot chain line A and the solid line B in FIG. 1 by moving the piston rod 17a provided on the swinging device 17 forward and backward. The position is adjusted up and down to the optimum position according to the driving conditions.

Further, when the combine is mounted on a truck or the like for transportation, the piston rod 17a of the swinging device 17 is retracted with the pins or the like of the regulating means 18 pulled out. By swinging the swing arm 14 to the front side, the height of the traveling body 1 exceeds the descent lowermost position where it can travel, that is, the position indicated by the solid line B in FIG. It is adjusted to the closest approaching lowest descent position, that is, the position indicated by the one-dot chain line C in FIG. 2 and the position indicated by C in FIG. 2. Therefore, the vehicle height of the combine is adjusted to the ground height during transportation. The height of the combine can be increased accordingly, the design range can be expanded within the limit of the ground height, and the function-oriented design can be performed.

[0018]

[Effect of the device]

 As described above, in the present invention, the track frame 6 of the crawler 5 is supported on the traveling machine body 1 via the swing arm 14 so as to be vertically movable, and the swing device 17 of the swing arm 14 is mounted on the machine body 1. In the traveling device for a mobile work machine, which is provided with the vehicle height adjustable, the swing range of the swing arm 14 exceeds the maximum descent position at which the machine body 1 can move to the maximum descent position, and the crawler is moved. 5 is set closest to the body 1 in the range of the lowest descent position where traveling is impossible, and the rocking motion of the body 1 is set to the lowest descent position where the body 1 can travel in the swing range of the swing arm 14. Since the regulating means 18 for regulating the swinging of the arm 14 in the lowering direction of the machine body or the machine body traveling is provided, the height of the machine body 1 is set to the highest position and the lowest position during traveling according to the traveling conditions. range Although it is impossible to travel while it can be adjusted with, it can be adjusted to the lowest position where the vehicle height can be lowered further beyond the lowest position where it can travel, so even if the aircraft height is designed to be high, By satisfying the height restrictions above ground during transportation, the design range within the height restrictions above ground can be expanded, and function-focused design becomes possible.

Moreover, since the regulation means 18 regulates the adjustment to the lowest descent position where the vehicle cannot run or the aircraft travels at the lowest position where the vehicle cannot run, safety can be ensured.

[Brief description of drawings]

FIG. 1 is a side view of a traveling device according to the present invention.

FIG. 2 is a side view showing a main part of the traveling device.

FIG. 3 is a schematic view showing a state in which the vehicle height is adjusted to the lowest descent position where traveling is impossible.

FIG. 4 is a schematic view showing a state in which the vehicle height is adjusted to the lowest position where the vehicle can travel.

FIG. 5 is a schematic diagram showing a state in which the vehicle height is adjusted to the highest possible position for traveling.

FIG. 6 is a perspective view of a combine shown as an example of a mobile work machine.

[Explanation of symbols]

 1 traveling machine body 5 crawler 6 track frame 14 swinging arm 17 regulating means

Claims (1)

[Scope of utility model registration request] 1. A vehicle in which a track frame 6 of a crawler 5 is movably supported on a traveling machine body 1 via a swing arm 14 and a swing device 17 of the swing arm 14 is provided on the machine body 1. A traveling device in a mobile work machine capable of high adjustment, wherein the crawler 5 moves in a swinging range of the swinging arm 14 from a maximum lifted position where the machine body 1 is lifted up to a travelable lowest descent position. The swing arm 14 is set to a range in which the vehicle 1 is closest to the aircraft 1 and is in the lowest descent position where the vehicle cannot travel, and the swing arm 14 is in the lowest position where the vehicle 1 can travel in the swing range of the swing arm 14. A traveling device in a mobile work machine, which is provided with a restricting means 18 for restricting swinging of the vehicle in the descending direction of the vehicle or traveling of the vehicle.