JP6224566B2 - Rough terrain vehicle - Google Patents

Description

  The present invention relates to an uneven terrain vehicle for transporting earth and sand on rough terrain such as a mountainous area, and more particularly, a turning frame installed in a lower traveling body, a cargo bed for placing earth and sand, and its cargo bed. The present invention relates to an uneven terrain vehicle including a vessel cylinder that moves up and down.

  As this kind of rough terrain vehicle, for example, the one described in Patent Document 1 is known. In this rough terrain vehicle, an upper turning body is installed on a crawler type lower traveling body via a turning device, and a driver's cab is mounted on either the left or right side of the front part of the turning frame that is the base frame of the upper turning body. Then, a power source unit having an engine and a hydraulic pump is mounted adjacent to the cab. A cargo bed is attached to the rear portion of the swing frame so as to be movable up and down around a pivot pin, and a vessel cylinder is attached between the swing frame and the load platform.

  In such rough terrain vehicles, common parts are used for the machine parts such as the undercarriage and the turning frame, and as the loading platform, multiple types of loading platforms having suitable structures for the properties of the load object such as earth and sand and wood are used. The loading platform selected according to the user's request is installed on the turning frame to assemble the rough terrain vehicle. On the user side, a plurality of types of loading platforms may be prepared, and the loading platform may be replaced and used corresponding to the loading object. Moreover, it may be replaced with a new one due to damage of the carrier.

  FIG. 10 is a side view showing a state in which the loading platform 90 is being attached to the turning frame 80 in the rough terrain vehicle. As shown in FIG. 10, when the loading platform 90 is attached to the revolving frame 80, the revolving frame 80 side boss 118 a of the vessel cylinder 118 is connected to a bracket 124 provided on the revolving frame 80 by pins 131. Further, the sleeper 100 is placed on the revolving frame 80 and the vessel cylinder 118 is placed thereon so that the loading platform side of the vessel cylinder 118 does not fall.

  In this way, the vessel cylinder 118 is placed on the revolving frame 80 via the sleepers 100, and the loading platform 90 is lifted above the revolving frame 80 by a crane (not shown) via a lifting member 160 such as a chain. Then, it is lowered to the turning frame 80. At this time, the loading platform 90 is lifted in a horizontal posture. When the loading platform 90 is lowered in a horizontal posture, the pin hole 125a of the bracket 125 on the lower surface of the loading platform 90 first approaches the pin hole 118c of the boss 118b of the vessel cylinder 118. Therefore, the pin holes 118c and 125a are aligned, and pins (not shown) are inserted into the pin holes 118c and 125a. At this time, one worker monitors the matching / mismatching of the positions of the pin holes 118c and 125a to inform other workers in the cab, and the other workers start the engine of the rough terrain vehicle. The pin holes 118c and 125a are aligned by adjusting the degree of expansion / contraction of the vessel cylinder 118.

  After positioning the pin holes 118c and 125a and inserting the pins, the sleeper 100 is removed, the loading platform 90 is further lowered, and the pin holes 123a of the boss 123 of the bracket 122 on the rear side of the turning frame 80 and the loading platform 90 The pin hole 129a of the boss 129 of the rear bracket 128 is aligned, and a pivot pin (not shown) as a support shaft is inserted.

JP 2011-194950 A

  In the conventional mounting structure shown in FIG. 10, since the vessel cylinder 118 is supported on the revolving frame 80 by the sleeper 100 when the loading platform 90 is attached, the boss 118 a of the vessel cylinder 118 is positioned higher than the revolving frame 80. . For this reason, as described above, the vessel cylinder 118 needs to be connected to the loading platform 90 with a pin before the loading platform 90 is connected to the revolving frame 80 from the pivot pin. Therefore, as described above, the pin hole 125a of the bracket 125 on the loading platform 90 side is aligned with the pin hole 118c of the vessel cylinder in an unstable state where the loading platform 90 is suspended by a crane, and the pin is not pivotally attached. Therefore, there is a problem that it is difficult to align the pin holes 118c and 125a and the workability is poor. In addition, two workers are required to align the pin holes 118c and 125a, which makes it difficult to save labor.

  The present invention has been made in view of the above problems, and its purpose is to improve workability at the time of mounting the loading platform in the mounting operation of the loading platform of the rough terrain vehicle, and to save labor. It is to provide an uneven terrain vehicle.

In order to achieve the above object, the first invention of the present application is:
Body frame is installed in the crawler undercarriage on the on the rear portion of the vehicle body frame, the loading platform so as to be vertically movable about a rear shaft is set vignetting, between the loading platform and the vehicle frame, and In the rough terrain vehicle in which the vessel cylinder is attached to each of the positions located inside the left and right vertical frames constituting the body frame,
Inside the left and right vertical frames constituting the body frame, a support mechanism is provided for supporting a vessel cylinder whose one end is pinned to the body frame when the loading platform is attached to the body frame.
The support member constituting the support mechanism is detachably attached to the vehicle body frame,
A pin hole for connection on the loading platform side of the reduced vessel cylinder supported by the support mechanism in a state where the loading platform is placed on the body frame and the loading platform is coupled to the body frame by a pivot pin. The rough terrain vehicle is characterized in that the support mechanism is arranged so that a position thereof matches a pin hole position for connecting a vessel cylinder of the cargo bed .

The second invention of the present application is
A vehicle body frame is installed on the crawler type lower traveling body, and a cargo bed is provided at a rear portion of the vehicle body frame so as to be movable up and down around a support shaft on the rear side, between the cargo bed and the vehicle body frame, and In the rough terrain vehicle in which the vessel cylinder is attached to each of the positions located inside the left and right vertical frames constituting the body frame,
Inside the left and right vertical frames constituting the body frame, a support mechanism is provided for supporting a vessel cylinder whose one end is pinned to the body frame when the loading platform is attached to the body frame .
The support mechanism includes a support member that supports the vessel cylinder from below and a bolt that fixes the support member to the vertical frame, on each inner side of the left and right vertical frames of the body frame. The bolt insertion hole for inserting the bolt of the member is a long hole, and the height of the support member is configured to be adjustable by changing the relative position of the bolt insertion hole with respect to the bolt. This is a rough terrain vehicle.

  According to the first aspect described above, since the support mechanism for supporting the vessel cylinder is provided inside the left and right vertical frames of the revolving frame, the vessel cylinder can be supported at a position lower than the conventional one. For this reason, it becomes possible to prevent the vessel cylinder from interfering with the loading platform in the loading platform mounting operation. For this reason, the vessel cylinder can be connected to the loading platform in a stationary state of the loading platform where the loading platform is placed on the revolving frame. For this reason, it becomes easy to align the pin holes between the vessel cylinder and the loading platform, the workability is improved, and the work can be performed quickly. Further, since it is only necessary to adjust the height of the pin hole of the vessel cylinder while the loading platform is placed on the turning frame, one person can operate without starting the engine of the rough terrain vehicle and expanding and contracting the vessel cylinder. Connection work with pins can be performed, and labor saving can be achieved.

In addition, when the loading platform is lowered and placed on the revolving frame, the vessel cylinder supports the position where the connecting pin hole position on the loading platform side of the vessel cylinder matches the pin hole position for connecting the vessel cylinder on the loading platform. As a result, the pin holes can be aligned more quickly during the work of mounting the loading platform, further improving the workability of the loading platform mounting operation.

According to the second aspect described above, since the bolt insertion hole of the support member is a long hole, the height of the support member can be adjusted. For this reason, manufacturing errors can be absorbed by adjusting the position of the support member, and the pin holes can be aligned with higher accuracy. Further, since the support member does not interfere with the vessel cylinder by lowering the support member during operation of the rough terrain vehicle, the support member does not need to be removed, and management of the support member is not necessary.

It is a side view showing one embodiment of the rough terrain vehicle of the present invention. In this Embodiment, it is a top view which shows the attachment structure of the vessel cylinder with respect to a turning frame. FIG. 3 is an enlarged partial plan view of FIG. 2. In this Embodiment, it is a side view which shows the mounting work state of the loading platform with respect to a turning frame. In this Embodiment, it is a side view which shows the state which attached the loading platform to the turning frame. It is a perspective view which shows an example of the support mechanism in this Embodiment. It is sectional drawing which shows the pin coupling structure and support mechanism of a vessel cylinder and a loading platform in this Embodiment. It is sectional drawing which shows the reference example of the support mechanism by this invention. It is a perspective view which shows the other example of the support mechanism by this invention. It is a side view which shows the mounting work state of the loading platform of the conventional rough terrain vehicle.

  FIG. 1 is a side view showing an embodiment of the rough terrain vehicle according to the present invention, and FIG. 2 is a plan view showing a mounting structure of a vessel cylinder to a turning frame in the present embodiment. In FIG. 1, reference numeral 1 denotes a crawler type lower traveling body. The lower traveling body 1 includes a track frame 2 and left and right drive wheels 3 provided on one end side (the front end side in the illustrated example) of the track frame 2. The left and right driven wheels 4 provided on the other end side (rear end side in the illustrated example) of the track frame 2, and the drive wheels 3 and the crawler belts 5 wound around the driven wheels 4. The lower traveling body 1 is configured to be able to travel on rough terrain such as a mountainous area, a muddy land, and a mountain road by driving the crawler belt 5 with the driving wheel 3.

  Reference numeral 6 denotes an upper swing body which is installed on the lower traveling body 1 via a swing device 7 so as to be capable of swinging. The turning device 7 turns the upper turning body 6 by a turning motor through a gear mechanism (both not shown). The upper swing body 6 includes a swing frame 8 as a vehicle body frame, a loading platform (vessel) 9, a power source unit 13, and a cab 19 mounted thereon. The loading platform 9 is attached to be movable up and down by the expansion and contraction of the vessel cylinder 18 shown in FIG.

  As shown in FIG. 2, a cab 19 and a power source unit 13 are placed in front of the revolving frame 8, and the power source unit 13 includes an engine 20, a hydraulic pump 21 driven thereby, and heat exchange. A container 17, a hydraulic oil tank 30, a fuel tank 14, and an air cleaner 15 are provided. The rear part of the revolving frame 8 includes vertical frames 8a and 8b arranged side by side on the left and right sides, and a horizontal frame 8c connecting the rear ends of these vertical frames 8a and 8b.

  FIG. 3 is a partially enlarged plan view of FIG. 2, FIG. 4 is a side view showing a mounting work state of the loading platform 9 with respect to the revolving frame 8 in the present embodiment, and FIG. FIG. As shown in FIGS. 3 to 5, brackets 22 having bosses 23 for pivotally mounting the loading platform 9 are provided on the left and right of the rear end portion of the revolving frame 8. On the other hand, the rear end of the loading platform 9 has a bracket 28 corresponding to the bracket 22, and the pin hole 29 a of the boss 29 provided in the bracket 28 and the pin hole 23 a of the boss 23 of the pivot frame 8 side bracket 22 are positioned. Further, by inserting the pivot pin 34 together, the loading platform 9 is pivotally mounted to the revolving frame 8 so as to be movable up and down.

  On the other hand, a bracket 26 projecting downward is provided at a substantially central portion in the front-rear direction of the loading platform 9 in order to connect the loading platform sides of the left and right vessel cylinders 18 to the loading platform 9, respectively. Reference numeral 26 a denotes a pin hole provided in the bracket 26.

  A vertical plate 10 is provided at the front portion of the loading platform 9 to isolate the power source unit 13 and the like on the front side of the rough terrain vehicle from the load mounting portion of the loading platform 9, and protrudes forward from the upper end of the vertical plate 10. Thus, a rod 11 that covers the power source unit 13 is provided. Further, side plates 12 are provided on both sides of the vertical plate 10 and the flange 11. When the loading platform 9 is attached to and detached from the revolving frame 8, the loading platform 9 is lifted by a crane. Therefore, a connection hole 12a and a bracket for connecting a lifting member 60 such as a chain or a wire to the side plate 12 and the rear end of the loading platform 9 are provided. 9a. Reference numeral 9 b denotes a rib provided on the bottom plate 9 c of the loading platform 9 for reinforcing the loading platform 9.

  Reference numeral 24 denotes a bracket provided on the inner surface of the horizontal frame 8c and the vertical frames 8a and 8b in order to connect the vessel cylinder 18 to the revolving frame 8. A boss 18a is provided at one end of the vessel cylinder 18 (the end portion on the revolving frame side). As shown in FIG. 3, the boss 18a is sandwiched between bosses 25, 25 provided on the brackets 24, 24. A pin 31 is inserted into the pin holes of the bosses 18 a and 25, and one end of the vessel cylinder 18 is connected to the revolving frame 8.

  On the other hand, the other end of the vessel cylinder 18, that is, the end of the loading platform 9 has a boss 18 b. By aligning the pin hole 18c of the boss 18b with the pin hole 26a provided in the bracket 26 on the lower surface of the loading platform 9 and inserting the pin 32, the vessel cylinder 18 is connected to the loading platform 9.

  Reference numeral 50 denotes a support mechanism for supporting the vessel cylinder 18 from below when the loading platform 9 is attached to the revolving frame 8. As shown in FIG. 3, the support mechanism 50 is provided on the inner sides of the left and right vertical frames 8a and 8b of the revolving frame 8, that is, on the opposing surfaces of the vertical frames 8a and 8b. The perspective view of FIG. 6 and the sectional view of FIG. 7 representatively show the support mechanism 50 attached to the vertical frame 8a side of the vertical frames 8a and 8b. As shown in FIGS. 6 and 7, a seat screw 51 for attaching a support member 52 for supporting the vessel cylinder 18 is fixed to the inner surface of the vertical frame 8a by welding or the like.

  As shown in FIGS. 6 and 7, the support member 52 according to the present embodiment is made of a plate material bent into an L shape including an attachment plate portion 52 a and a support plate portion 52 b. The support member 52 can be attached to and detached from the vertical frame 8b by inserting the bolt 53 into the bolt insertion hole 52c provided in the mounting plate portion 52a of the support member 52, screwing the bolt 53 into the screw hole 51a of the seat screw 51, and fastening. Install to. A support mechanism 50 that is symmetrical to the vertical frame 8a is provided on the vertical frame 8b side. In FIG. 7, 18 d is a pipe for supplying hydraulic oil to the vessel cylinder 18.

  In this embodiment, when the loading platform 9 is attached to the revolving frame 8, the support member 52 of the support mechanism 50 is attached to the vertical frames 8a and 8b of the revolving frame 8 as shown in FIG. Further, one end of the vessel cylinder 18 is connected to the revolving frame 8 by the pin 31 with the structure shown in FIG. 3, and the tube of the vessel cylinder 18 is placed on and supported by the support member 52 of the support mechanism 50. .

  Then, as shown in FIG. 4, the loading platform 9 is lifted onto the revolving frame 8 by a crane (not shown) via a lifting member 60. Then, the loading platform 9 is lowered from the state of FIG. 4, and the pin hole 29a of the pivot boss 29 at the rear end of the loading platform 9 is aligned with the pin hole 23a of the boss 23 of the swivel frame 8, as shown in FIG. Thus, the pivot pin 31 is inserted into these pin holes 29a and 23a.

  Further, when the loading platform 9 is placed on the revolving frame 8, that is, when the loading platform 9 is at the lowest position, the position of the pin hole 18 c of the boss 18 b of the reduced vessel cylinder 18 is set to the pin hole 26 a of the bracket 26 of the loading platform 9. Adjust to the position of. In this case, the pin holes 18c and 26a of the pin cylinders 18c and 26a are configured in advance so that the position of the pin hole 18c of the reduced vessel cylinder 18 matches the pin hole 26a on the loading platform 9 placed on the revolving frame 8. Positioning can be performed easily and quickly. Thus, in the state which aligned pin hole 18c, 26a, the pin 32 is inserted in these pin holes 18c, 26a, and the Bessel cylinder 18 is connected with the loading platform 9. FIG.

  Thus, after connecting the vessel cylinder 18 to the loading platform 9, the bolt 53 is pulled out and the support member 52 is removed to prevent the support member 52 from interfering with the vessel cylinder 18.

  As described above, according to the present embodiment, the support mechanism 50 for supporting the vessel cylinder 18 from below is provided inside the left and right vertical frames 8a and 8b of the revolving frame 8. The vessel cylinder 18 can be supported. For this reason, it is possible to prevent the vessel cylinder 18 from interfering with the loading platform 9 when the loading platform 9 is lowered in the operation of lifting the loading platform 9 with a crane and attaching it to the revolving frame 8.

  For this reason, since the vessel cylinder 18 can be connected to the loading platform 9 in a stationary state in which the revolving frame 8 is placed on the loading platform 9, the alignment of the pin holes 18c and 26a between the vessel cylinder 18 and the loading platform 9 is facilitated, and workability is improved. Will improve. Further, the height of the vessel cylinder 18 may be adjusted in a state where the loading platform 9 is placed on the revolving frame 8, and the engine of the rough terrain vehicle is not started and the vessel cylinder is not expanded and contracted as in the prior art. Connection work with pins can be performed by one person, and labor saving and speed can be achieved.

  Further, as described above, in the state where the loading platform 9 is lowered and placed on the revolving frame 8 and the loading platform 9 is coupled to the revolving frame 8 by the pivoting pins 34, the vessel cylinder 18 is connected to the loading platform 9 side. If the position of the pin hole 18c is configured to match the position of the pin hole 26a for connecting the vessel cylinder 18 of the loading platform 9, the pin hole 18c can be more easily and quickly installed when the loading platform 9 is attached. , 26a can be aligned, and the loading platform 9 can be mounted more easily.

FIG. 8 is a sectional view showing a reference example of the support mechanism 50 according to the present invention. The basic structure of the support mechanism 50 shown in FIG. 8 is the same as that of the embodiment described above, except that the mounting position of the support member 52 is set to a position lower than that of the embodiment. That is, in the state where the loading platform 9 is placed on the revolving frame 8 and the revolving frame 8 and the loading platform 9 are connected by the pivot pin 34, the position of the loading platform side pin hole 18 c of the vessel cylinder 18 is the pin hole 26 a of the bracket 26. The support mechanism 50 is provided on the inner side surface of the vertical frame 8a (the same applies to 8b) so that the position is lower than the first position.

  If the position of the support mechanism 50 is set as shown in FIG. 8, the loading platform 9 is placed on the revolving frame 8 and aligned with the pin hole 18c of the vessel cylinder 18 and the pin hole 26a of the loading platform 9 side bracket 26. An operator needs to lift the pin hole 18 c side of the vessel cylinder 18 and align it with the pin hole 26 a of the bracket 26. However, since the support member 52 does not interfere with the vessel cylinder 18 during operation of the rough terrain vehicle, the support member 52 does not need to be removed, and management of the support member 52 becomes unnecessary.

FIG. 9 is a perspective view showing another embodiment of the support mechanism of the present invention. In the embodiment of FIG. 9, the bolt insertion hole provided in the support member 52 is a long hole 52 d , and the support member 52 is changed by changing the relative position of the long hole 52 d with respect to the bolt 53 that attaches the support member 52 to the seat screw 51. The position of the support member 52 can be adjusted in the height direction along the long hole 52d, that is, along the direction of the arrow A.

  If the support mechanism is configured as shown in FIG. 9, the positional deviation of the pin holes 18c and 26a due to manufacturing errors can be absorbed by the position adjustment of the support member 52, and the pin holes 18c and 26a can be more accurately performed. Can be aligned. Moreover, since the support member 52 does not interfere with the vessel cylinder 18 by lowering the support member 52 during operation of the rough terrain vehicle, the support member 52 does not need to be removed, and the support member 52 is managed. It becomes unnecessary.

  In addition, although the loading platform 9 of the rough terrain vehicle according to the present embodiment has been provided with a loading platform for transporting earth and sand or the like, in the case of a loading platform for loading wood, it is necessary to hold wood on both sides of the loading platform. A configuration in which a pole is attached is adopted. In this case as well, the structure and arrangement of the pin holes 29a and 26a are the same as those of the loading platform 9 of the present embodiment. Further, in the present embodiment, the example in which the support mechanism 50 is applied to an uneven terrain vehicle in which the upper turning body 6 can turn relative to the lower traveling body 1 has been described. The present invention can also be applied to a non-turning (fixed) rough terrain vehicle having a loading platform, a driver's cab and the like provided on a body frame fixedly provided on the body 1.

  Moreover, as a structure of the support mechanism 50, the thing of various structures other than the said embodiment is employable. For example, as means for changing the vertical position of the support member 52, a plurality of mounting holes such as bolt insertion holes are provided at different positions in the height direction of the support member 52, and the height of the support member 52 is selected by selecting the mounting holes. May be changed. Moreover, it is good also as a structure which attaches a support member so that vertical rotation is possible with respect to the fixing member (seat screw equivalent member) attached to the vertical frames 8a and 8b, and fixes a support member in a raising position and a lowered position, respectively. Moreover, the structure which attaches the volt | bolt and pin as a supporting member with respect to the fixing member provided in the vertical frames 8a and 8b is also employable. In addition, when implementing this invention, a various change and addition are possible in the range which does not deviate from the summary.

1 Lower traveling body 6 Upper revolving body 8 Turning frame (body frame)
9 Loading platform 18 Bessel cylinder 18a, 18b Boss 18c Pin hole 22 Bracket 23 Boss 23a Pin hole 26 Bracket 26a Pin hole 28 Bracket 29 Boss 29a Pin hole 31, 32 Pin 34 Pivoting pin 50 Support mechanism 51 Seat screw 51a Screw hole 52 Support Member 52c Bolt insertion hole 52d Long hole 53 Bolt

Claims (2)

Body frame is installed in the crawler undercarriage on the on the rear portion of the vehicle body frame, the loading platform so as to be vertically movable about a rear shaft is set vignetting, between the loading platform and the vehicle frame, and In the rough terrain vehicle in which the vessel cylinder is attached to each of the positions located inside the left and right vertical frames constituting the body frame,
Inside the left and right vertical frames constituting the body frame, a support mechanism is provided for supporting a vessel cylinder whose one end is pinned to the body frame when the loading platform is attached to the body frame.
The support member constituting the support mechanism is detachably attached to the vehicle body frame ,
A pin hole for connection on the loading platform side of the reduced vessel cylinder supported by the support mechanism in a state where the loading platform is placed on the body frame and the loading platform is coupled to the body frame by a pivot pin. The rough terrain vehicle according to claim 1, wherein the support mechanism is arranged so that a position thereof matches a pin hole position for connecting a vessel cylinder of the cargo bed . A vehicle body frame is installed on the crawler type lower traveling body, and a cargo bed is provided at a rear portion of the vehicle body frame so as to be movable up and down around a support shaft on the rear side, between the cargo bed and the vehicle body frame, and In the rough terrain vehicle in which the vessel cylinder is attached to each of the positions located inside the left and right vertical frames constituting the body frame,
Inside the left and right vertical frames constituting the body frame, a support mechanism is provided for supporting a vessel cylinder whose one end is pinned to the body frame when the loading platform is attached to the body frame.
The support mechanism includes a support member that supports the vessel cylinder from below and a bolt that fixes the support member to the vertical frame, on each inner side of the left and right vertical frames of the body frame. The bolt insertion hole for inserting the bolt of the member is a long hole, and the height of the support member is configured to be adjustable by changing the relative position of the bolt insertion hole with respect to the bolt. A rough terrain vehicle.

Images