JP2008222104A - Crawler type carrying vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress collision of earth and sand and the like to an engine cover on the rear part side of a cab when carried articles such as earth and sand is loaded on a deck. <P>SOLUTION: At a bulging portion 10D constituting a partition wall erected on the deck 9, a cover member 21 selectively fixed at a projecting position projecting forward from a front end portion of the bulging portion 10D and at a retracting position superimposing with the bulging portion 10D. While the cover member 21 is fixed at the projecting position, the rear part side 17E1 of the cab 17, the engine cover 16, and a clearance 18 between the cab 17 and the engine cover 16 are covered by the cover member 21 from an upper side. Therefore, even if a part of earth and sand scatters to the front side over the partition wall 10, earth and sand can be prevented from colliding with the rear part side 17E1 of the cab 17 and the engine cover 16 or entering the clearance 18 between the cab 17 and the engine cover 16 by the cover member 21. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a track-type transport vehicle that is suitably used for transporting transported materials such as earth and sand, for example, on muddy ground and rough terrain.

  Generally, when transporting earth and sand excavated using a hydraulic excavator or the like in muddy ground, rough terrain, etc., a traveling body having a crawler belt, a body frame provided on the traveling body, and a body frame provided on the body frame A tracked vehicle equipped with a loading platform is preferably used (see, for example, Patent Document 1).

JP 2001-213215 A

  In this tracked vehicle according to the prior art, an engine cover that houses equipment such as an engine, a hydraulic pump, a heat exchanging device, and the like is disposed on the front side of the loading platform in the body frame, and becomes the front side of the engine cover. On the left side of the front part of the vehicle body frame, a cab on which an operator enters is disposed.

  The track-type transport vehicle travels on muddy ground, rough terrain, etc. by a traveling body having a crawler track with the earth and sand excavated by a hydraulic excavator or the like loaded on the loading platform, and thereby discharges the earth and sand as desired. It will be transported to the place.

  Here, a partition wall called a back plate or the like is usually erected on the front end side of the loading platform provided in the tracked transport vehicle. The partition wall includes a rising portion that rises upward, and the rising portion. It is comprised by the overhang | projection part projected ahead from the upper end side. Thus, when the earth and sand excavated by the hydraulic excavator is loaded on the loading platform of the tracked vehicle, the partition wall can prevent the earth and sand from colliding with the cab, engine cover, etc. of the tracked vehicle. It has become.

  However, for example, when earth and sand are released from the bucket toward the loading platform at a position higher than the partition wall of the loading platform, a part of this sediment collides with the engine cover on the rear side of the cab beyond the partition wall. Or intrude into the gap between the cab and the engine cover. For this reason, the cab and the engine cover are damaged by the collision of the earth and sand, or the earth and sand are accumulated in the gap between the cab and the engine cover, so that the maintenance for the equipment such as the engine and the hydraulic pump housed in the engine cover is maintained. There exists a problem that workability | operativity at the time of work will fall.

  The present invention has been made in view of the above-described problems of the prior art, and can prevent the earth and sand from colliding with the rear side of the cab, the engine cover, and the like when the earth and sand are loaded on the loading platform. It aims to provide a tracked vehicle.

  In order to solve the above-described problems, the present invention relates to a traveling body having a crawler belt, a traveling body having a crawler belt, a vehicle body frame provided on the traveling body, and provided on the rear side of the vehicle body frame and upward on the front end side. A loading platform in which a partition wall composed of a rising portion that rises toward the front and a protruding portion that protrudes forward from the rising portion is provided, and is positioned below the protruding portion on the front side of the loading platform and on the vehicle body frame The present invention is applied to a tracked vehicle including an engine cover that is provided and accommodates a mounted device including an engine, and a cab that is provided on the front side of the body frame and is located on the front side of the engine cover.

  According to a first aspect of the present invention, the overhanging portion forming the partition wall of the loading platform is further provided with a cover member added so as to protrude further forward, and the cover member extends forward from the overhanging portion. The present invention is configured as a position-adjustable cover member that is position-adjustable between the protruding position that protrudes and the storage position that overlaps the overhanging portion.

  According to a second aspect of the present invention, the cover member includes a plate body in which one end side in the front and rear directions is a fixed end with respect to the overhanging wall and the other end side in the front and rear directions is a free end, and the free end is According to another aspect of the present invention, the protruding position projecting forward from the front end side of the overhang portion and the retracted position where the free end is reversed from the front end side of the overhanging portion to the rear are selectively fixed.

  The invention of claim 3 is that the cover member is formed of a folded plate that can be folded back and forth between the protruding position and the retracted position around the front end side of the overhanging portion.

  According to a fourth aspect of the present invention, the cover member is formed to have a length that covers the rear side of the cab and the engine cover from above, and a gap between the cab and the engine cover when the protruding position is reached. This is to prevent the intrusion of earth and sand.

  According to the first aspect of the present invention, for example, when a load such as earth and sand excavated by a hydraulic excavator or the like is loaded on the loading platform of the track-type transport vehicle, the cover member is positioned at the protruding position, thereby extending the partition wall. The rear part of the cab and the engine cover can be covered from above by the cover member protruding forward from the part. For this reason, it can suppress by the cover member that the earth and sand exceeding a partition wall fall to the rear part side of a cab, an engine cover, between a cab and an engine cover, etc. As a result, the cab and engine cover can be protected from the falling earth and sand, and the accumulation of earth and sand in the gap between the cab and the engine cover is suppressed, and maintenance of the mounted equipment housed in the engine cover is prevented. Workability when performing can be improved.

  On the other hand, for example, when a track-type transporter is loaded on a trailer and transported to a work site, the cover member is positioned at the retracted position so that the cover member does not protrude above the cab, and the cover member is separated from the partition wall. It can be stored in a state where it overlaps with the overhanging portion. For this reason, the ground height in a state where the track-type transport vehicle is loaded on the trailer can be suppressed to be lower than the height limit during transportation.

  According to the second aspect of the present invention, the cover member can be fixed at the protruding position by fixing the fixed end to the protruding portion with the free end of the cover member protruding forward from the front end side of the protruding portion. The rear side of the cab and the engine cover can be covered from above. On the other hand, the cover member can be fixed at the retracted position overlapping the overhanging portion by fixing the fixed end to the overhanging portion with the free end of the cover member reversed from the front end side of the overhanging portion to the rear.

  According to the invention of claim 3, it is possible to easily position the folded plate in one of the protruding position and the retracted position only by folding the folded plate forward and backward with the front end side of the overhanging portion as the center. it can.

  According to the invention of claim 4, since the cover member is formed to have a length dimension that covers the rear side of the cab and the engine cover from above, the cover member is positioned at the protruding position so that the cab and the engine cover are separated from each other. It is possible to reliably prevent intrusion of earth and sand into the gap between them, and it is possible to improve workability when performing maintenance of the mounted equipment accommodated in the engine cover.

  Hereinafter, an embodiment of a track-type transporter according to the present invention will be described in detail with reference to FIGS.

  First, FIG. 1 to FIG. 7 show a first embodiment of the present invention. In the figure, reference numeral 1 denotes a tracked transport vehicle. The tracked transport vehicle 1 is used for transporting transported materials such as earth and sand on muddy ground and rough terrain. Here, the track-type transport vehicle 1 includes a traveling body 2, a body frame 7, a loading platform 9, a partition wall 10, an engine cover 16, a cab 17, a cover member 21, and the like, which will be described later.

  2 is a track-type (crawler-type) traveling body capable of self-propelling. The traveling body 2 includes a track frame 3 serving as a base, and a traveling motor ( Left and right drive wheels 4, 4 driven by an unillustrated), left and right idle wheels 5, 5 provided on the other end side of the track frame 3, and drive wheels 4 and idle wheels 5. It is roughly constituted by left and right crawler belts 6 and 6 provided by winding. The traveling body 2 travels on rough terrain and muddy ground by driving the crawler belt 6 with the drive wheels 4.

  7 is a vehicle body frame provided on the traveling body 2. As shown in FIGS. 1 and 6, the vehicle body frame 7 includes left and right vertical beams 7A and 7A extending in the front and rear directions, A plurality of horizontal beams (not shown) connecting the right vertical beams 7A, and a bottom plate 7B fixed to the front side of each vertical beam 7A and mounted with an engine 13, an engine cover 16, a cab 17 and the like which will be described later. It is generally constructed and forms a strong support structure. In addition, a loading platform support bracket 7C for supporting a loading platform 9 described later is provided on the rear end side of each vertical beam 7A. The vehicle body frame 7 is provided on the track frame 3 of the traveling body 2 so as to be capable of turning via a turning device 8, and turns the traveling body 2 by operating the turning device 8. .

  Reference numeral 9 denotes a loading platform provided from the front and rear intermediate portions to the rear end portion of the vehicle body frame 7, and the loading platform 9 is formed in a box shape with a bottom as a whole and is loaded with a transported object such as earth and sand. Here, as shown in FIGS. 1, 6, and the like, the loading platform 9 is arranged with left and right vertical beams 9 </ b> A and 9 </ b> A extending in the front and rear directions along the vehicle body frame 7 and spaced in the front and rear directions. A plurality of horizontal beams 9B, 9B,... Extending in the left and right directions perpendicular to the vertical beams 9A, a flat bottom plate 9C fixed to the upper surfaces of the vertical beams 9A and the horizontal beams 9B, and the bottom plate 9C Left and right side plates 9D and 9D extending in the rear direction before rising from the left and right ends, and a rear plate 9E rising from the rear end side of the bottom plate 9C and extending in the left and right directions, which will be described later. The partition wall 10 is generally configured.

  Reference numeral 10 denotes a partition wall called a back plate or the like standing on the front end side of the loading platform 9, and the partition wall 10 is used to load earth and sand on the loading platform 9 using, for example, a hydraulic excavator or the like (not shown). The earth and sand are prevented from jumping forward from the loading platform 9 and colliding with an engine cover 16 and a cab 17 which will be described later.

  Here, as shown in FIG. 6, the partition wall 10 is provided with a left and right left and right sides that are substantially L-shaped and are erected on the front end sides of the left and right side plates 9 </ b> D and 9 </ b> D. Left and right frame members fixed to the inner side surfaces of the left and right brackets 10A and 10A and the left and right side plates 9D of the loading platform 9 and bent in a substantially L shape with the upper end side facing forward. 10B, 10B, a plate-like rising portion 10C fixed to the left and right frame members 10B and rising vertically upward from the front end side of the bottom plate 9C of the loading platform 9, and a rising portion fixed to the left and right frame members 10B It is comprised by the flat-plate-like overhang | projection part 10D which protrudes ahead, inclining diagonally upward from the upper end side of 10C.

  And the overhang | projection part 10D of the partition wall 10 covers the below-mentioned engine cover 16 from the upper part, and the front end side (upper end side) of overhang | projection part 10D has several female screw holes 10E, 10E, ... formed with the back nut etc. The cover member 21 (described later) is attached using the female screw holes 10E.

  Further, the rear end side of each vertical beam 9A constituting the loading platform 9 is rotatably attached to a loading platform support bracket 7C of the body frame 7 via a pin 11, and the loading platform 9 is interposed between the body frame 7 and the loading platform 9. A lifting cylinder 12 is provided (see FIG. 1). Accordingly, when the loading platform elevating cylinder 12 is expanded and contracted, the front end side of the loading platform 9 rotates upward and downward about the pin 11. Thereby, the loading platform 9 is inclined with respect to the vehicle body frame 7, and the transported material such as earth and sand loaded on the loading platform 9 can be discharged.

  An engine 13 is located on the front side of the loading platform 9 and mounted on the bottom plate 7B of the vehicle body frame 7. The engine 13 is disposed in a horizontally extending state extending leftward and rightward as shown in FIG. . Further, a hydraulic pump 14 is disposed on the left end side of the engine 13, and the hydraulic pump 14 is driven by the engine 13, so that various hydraulic actuators mounted on the track-type transport vehicle 1 are operated with pressure. Oil is supplied. Furthermore, on the right end side of the engine 13, a heat exchange device 15 that cools engine cooling water, hydraulic oil, and the like is disposed.

  An engine cover 16 is provided on the bottom plate 7B of the vehicle body frame 7 and is located on the front side of the loading platform 9. The engine cover 16 accommodates mounted devices such as the engine 13, the hydraulic pump 14, and the heat exchange device 15 described above. To do. Here, the engine cover 16 is formed in a rectangular parallelepiped box shape extending in the left and right directions as a whole, and a left side portion of the engine cover 16 that houses the hydraulic pump 14 is a right side that houses the engine 13 and the heat exchange device 15. The length dimension in the front and rear direction is smaller than the part, and a cab 17 described later is disposed on the front side.

  Reference numeral 17 denotes a cab located on the front side of the engine cover 16 and disposed on the left side of the front portion of the vehicle body frame 7. The cab 17 includes a front surface portion 17A, a rear surface portion 17B, a left surface portion 17C, a right surface portion 17D, and an upper surface portion 17E. It is formed in a box shape surrounded by. In the cab 17, there are provided a driver's seat where an operator is seated, a travel lever for traveling the traveling body 2, an operation lever for raising and lowering the loading platform 9 (none of which are shown).

  Here, the cab 17 is disposed on the left front side of the engine cover 16. Thereby, as shown in FIG. 2 and the like, a gap 18 is formed between the rear surface portion 17B and the right side surface portion 17D of the cab 17 and the engine cover 16.

  Reference numeral 19 denotes a fuel tank disposed on the front right side of the vehicle body frame 7, and the fuel tank 19 is disposed on the right front side of the engine cover 16 and on the right side of the cab 17. The fuel tank 19 stores fuel supplied to the engine 13.

  A cover member 21 is additionally provided so as to protrude further forward from the overhanging portion 10D constituting the partition wall 10 of the loading platform 9. The cover member 21 is further forward from the overhanging portion 10D as shown in FIG. It is selectively fixed at either one of the protruding position and the retracted position that overlaps the overhanging portion 10D as shown in FIG.

  Here, as shown in FIG. 6, the cover member 21 is formed as a single rectangular plate that extends in the left and right directions using a steel plate or the like, and one end side in the front and rear directions of the cover member 21 is fixed. It becomes the end 21A, and the other end in the front and rear directions is a free end 21B. The length in the front and rear direction from the fixed end 21A to the free end 21B of the cover member 21 is such that the rear side 17E1 of the cab 17 and the engine cover 16 are viewed from above when the cover member 21 is in the protruding position. The length is set to cover. Further, a plurality of bolt insertion holes 21C, 21C,... Corresponding to the female screw holes 10E provided on the front end side of the overhanging portion 10D are formed in the fixed end 21A of the cover member 21 side by side in the left and right directions. ing.

  Then, the bolt 22 is inserted into each bolt insertion hole 21C of the cover member 21, and the bolt 22 is screwed into the female screw hole 10E of the front plate 10C, whereby the cover member 21 is fixed to the overhanging portion 10D of the partition wall 10. It becomes the composition which is done.

  In this case, when the fixed end 21A of the cover member 21 is fixed to the overhanging portion 10D using the bolt 22 with the free end 21B of the cover member 21 protruding forward from the front end side of the overhanging portion 10D, The cover member 21 is positioned at the protruding position shown in FIG. Then, the cover member 21 positioned at the protruding position protrudes further forward and obliquely upward from the front end side of the overhanging portion 10D, and extends beyond the rear surface portion 17B of the cab 17 and above the upper surface portion 17E. As a result, as shown in FIG. 2, the cover member 21 is configured to cover the rear side 17E1 of the cab 17, the engine cover 16, and the gap 18 formed between the cab 17 and the engine cover 16 from above. .

  On the other hand, when the free end 21B of the cover member 21 is reversed from the front end side of the overhanging portion 10D to the rear, and the fixed end 21A of the cover member 21 is fixed to the overhanging portion 10D using the bolt 22, The cover member 21 is positioned at the storage position shown in FIG. Then, the cover member 21 positioned at the storage position overlaps with the overhanging portion 10D, and the free end 21B is stored on the overhanging portion 10D without protruding above the cab 17 (upper surface portion 17E). Accordingly, for example, as shown in FIG. 7, when the tracked transport vehicle 1 is loaded on the trailer 23 and transported to the work site, the ground height of the tracked transport vehicle 1 in a state of being loaded on the trailer 23. H becomes the structure which can be restrained lower than the height restriction at the time of transportation.

  The track-type transport vehicle 1 according to the present embodiment has the above-described configuration. When the track-type transport vehicle 1 is used for transporting earth and sand or the like, the operator gets into the cab 17, The tracked vehicle 1 is moved toward the work place.

  Then, after the earth and sand excavated by a hydraulic excavator or the like (not shown) is loaded on the loading platform 9, the track-type transport vehicle 1 is moved to a desired soil removal location, and the loading platform lifting cylinder 12 is used to mount the loading platform 9 on the vehicle body. By inclining with respect to the frame 7, the earth and sand loaded on the loading platform 9 is discharged to a desired earth discharging place.

  Here, at the time of carrying the earth and sand described above, as shown in FIG. 4, the cover member 21 is fixed in a state where the free end 21 </ b> B of the cover member 21 protrudes further forward from the projecting portion 10 </ b> D of the partition wall 10. The cover member 21 is positioned at the protruding position by fixing the end 21 </ b> A to the projecting portion 10 </ b> D using the bolt 22.

  As a result, the cover member 21 extends obliquely upward from the front end side of the overhanging portion 10D to above the upper surface portion 17E of the cab 17, and as shown in FIG. 2, the rear side 17E1, the engine cover 16 and the cab 17 of the cab 17 A gap 18 between the engine cover 16 and the engine cover 16 is covered from above. For this reason, even when part of the earth and sand scatters to the front (cab 17 side) when dropping the earth and sand excavated by the hydraulic excavator onto the loading platform 9 from above, the scattered earth and sand By colliding with the cover member 21 protruding forward from the front end side of the overhanging portion 10 </ b> D constituting the wall 10, the cover member 21 is accommodated in the loading platform 9 by moving backward along the inclination of the cover member 21.

  Therefore, even if a part of the earth and sand to be loaded on the loading platform 9 jumps over the partition wall 10 and scatters forward, the earth and sand collides with the rear side 17E1 of the cab 17 and the engine cover 16, or the cab 17 and the engine cover 16 Intrusion into the gap 18 formed between the cover member 16 and the cover member 21 can be suppressed. As a result, the cab 17 and the engine cover 16 can be protected from the scattered earth and sand. Further, sediment is prevented from accumulating in the gap 18 between the cab 17 and the engine cover 16, and maintenance is performed for the engine 13, the hydraulic pump 14, and the heat exchange device 15 accommodated in the engine cover 16. Workability can be improved.

  Next, after the earth and sand transporting operation described above is completed, as shown in FIG. 7, the tracked transport vehicle 1 is loaded on the trailer 23 and transported to another work site. In this case, as shown in FIG. 5, with the free end 21 </ b> B of the cover member 21 reversed from the front end side of the projecting portion 10 </ b> D to the rear, the fixed end 21 </ b> A of the cover member 21 is used with the bolt 22. The cover member 21 is positioned at the storage position by being fixed to the overhang portion 10D.

  As a result, the cover member 21 overlaps the overhanging portion 10D of the partition wall 10, so that the cover member 21 is stored on the overhanging portion 10D without its free end 21B protruding above the cab 17 (upper surface portion 17E). can do. As a result, the ground height H in a state where the tracked transport vehicle 1 is loaded on the trailer 23 can be suppressed to be lower than the height limit during transportation.

  Next, FIGS. 8 to 10 show a second embodiment of the present invention. The feature of the present embodiment is that the cover member is a plate in which the front and rear intermediate portions are mountain-shaped bent portions. And a reinforcing member joined to the plate. In the present embodiment, the same components as those in the first embodiment described above are denoted by the same reference numerals, and the description thereof is omitted.

  In the figure, reference numeral 31 denotes a cover member provided on the upper end side of the partition wall 10. The cover member 31 is used in this embodiment in place of the cover member 21 according to the first embodiment described above. . Then, the cover member 31 has a protruding position that protrudes further forward from the protruding portion 10D of the partition wall 10 as shown in FIG. 8 and a storage position that overlaps the protruding portion 10D of the partition wall 10 as shown in FIG. It is selectively fixed at one of the positions.

  Here, as shown in FIG. 10, the cover member 31 is formed by bending a rectangular plate extending in the left and right directions, and the front and rear intermediate portions are mountain-shaped bent portions 32A, front, A bent plate 32 having one end in the rear direction as a fixed end 32B and a free end 32C in the other end in the front and rear directions, and a reinforcing plate 33 joined to the bent plate 32 by means of welding or the like. ing.

  In this case, the length in the front and rear directions from the fixed end 32B to the free end 32C of the bending plate 32 constituting the cover member 31 is the same as the rear side 17E1 of the cab 17 when the cover member 31 is in the protruding position. The length is set to cover the engine cover 16 from above. In addition, a plurality of bolt insertion holes 32D, 32D,... Corresponding to the female screw holes 10E provided in the overhanging portion 10D of the partition wall 10 are formed in the fixed end 32B of the bent plate 32 side by side in the left and right directions. Has been.

  Then, the bolt 22 is inserted into each bolt insertion hole 32D of the bending plate 32, and the bolt 22 is screwed into the female screw hole 10E of the extension portion 10D, whereby the cover member 31 is fixed to the extension portion 10D of the partition wall 10. It becomes the composition which is done.

  In this case, when the fixed end 32B of the cover member 31 is fixed to the overhanging portion 10D using the bolt 22 with the free end 32C of the cover member 31 protruding forward from the front end side of the overhanging portion 10D, The cover member 31 is positioned at the protruding position shown in FIG. Then, the cover member 31 positioned at the protruding position extends obliquely upward from the front end side of the overhanging portion 10D to the upper portion of the upper surface portion 17E of the cab 17, whereby the rear side 17E1, the engine cover 16, and the cab 17 of the cab 17 A gap 18 formed between the engine cover 16 and the engine cover 16 is covered from above.

  On the other hand, when the fixed end 31B of the cover member 31 is fixed to the overhanging portion 10D using the bolt 22 in the state where the free end 31C of the cover member 31 is reversed from the front end side of the overhanging portion 10D to the rear, The cover member 31 is positioned at the storage position shown in FIG. The cover member 31 positioned at the storage position overlaps with the overhanging portion 10D, and the free end 31C is stored on the overhanging portion 10D without protruding above the cab 17 (upper surface portion 17E). It has become.

  The track-type transport vehicle according to the present embodiment is provided with the cover member 31 as described above on the front end side of the overhanging portion 10D constituting the partition wall 10, and the cover member 31 is also illustrated in FIG. The cab 17 and the engine cover 16 can be protected from the scattered earth and sand. Further, sediment can be prevented from accumulating in the gap 18 between the cab 17 and the engine cover 16, and workability when performing maintenance on the engine 13 and the like housed in the engine cover 16 can be improved. On the other hand, by positioning the cover member 31 at the retracted position shown in FIG. 9, the transportation height when the track-type transport vehicle is loaded on the trailer and transported can be kept low.

  In addition, according to the present embodiment, the bent plate 32 having the bent portion 32A at the front and rear intermediate portions, and the fixed end 32B side and the free end 32C side of the bent plate 32 with the bent portion 32A interposed therebetween. Since the cover member 31 is constituted by the joined reinforcing member 33, the strength of the cover member 31 can be increased. Thereby, even if the loading platform 9 is tilted with respect to the vehicle body frame 7 with the cover member 31 positioned at the protruding position shown in FIG. 8, the tilting operation of the loading platform 9 causes the cover member 31 to vibrate greatly. The durability of the cover member 31 itself and the durability of the partition wall 10 to which the cover member 31 is attached can be enhanced.

  Next, FIGS. 11 to 13 show a third embodiment of the present invention. The feature of the present embodiment is that the cover member is stored in the protruding position centered on the front end side of the overhang portion constituting the partition wall. The reason is that it is constituted by a folded plate that can be folded back to the position. In the present embodiment, the same components as those in the first embodiment described above are denoted by the same reference numerals, and the description thereof is omitted.

  In the figure, reference numeral 41 denotes a mounting board attached to the front end side of the overhanging part 10D constituting the partition wall 10, and the mounting board 41 is composed of an elongated plate extending in the left and right directions, and each female screw hole of the overhanging part 10D. A plurality of bolt insertion holes 41A, 41A, ... corresponding to 10E are formed. And the fixing piece 42A of each hinge mechanism 42 mentioned later is adhering to the upper surface side of the attachment board | substrate 41. As shown in FIG.

  42, 42,... Are a plurality of (for example, four) hinge mechanisms fixed to the mounting substrate 41, and each hinge mechanism 42 has a folded plate 43, which will be described later, front and rear with respect to the overhanging portion 10D of the partition wall 10. It is supported so that it can be folded back in the direction. Here, the fixed piece 42A of each hinge mechanism 42 is fixed to the upper surface side of the mounting substrate 41 using means such as welding, and the movable piece 42B of each hinge mechanism 42 is fixed to a folded plate 43 described later. .

  Reference numeral 43 denotes a folded plate as a cover member fixed to the movable piece 42B of each hinge mechanism 42. The folded plate 43 is formed as a single rectangular plate extending in the left and right directions, and the folded plate 43 is fixed. The length in the front and rear direction from the end 43A to the free end 43B is a length that covers the rear side 17E1 of the cab 17 and the engine cover 16 from above when the folded plate 43 is in the protruding position shown in FIG. Is set to The fixed end 43A of the folded plate 43 is fixed to the movable piece 42B of each hinge mechanism 42 using means such as welding. In addition, the free end 43B of the folded plate 43 is bent upward in an L-shape so as to increase the strength of the folded plate 43 as a whole.

  Therefore, the folding plate 43 is attached to the front end side of the overhanging portion 10D by screwing the bolts 22 inserted into the bolt insertion holes 41A of the mounting substrate 41 into the female screw holes 10E of the overhanging portion 10D. Then, by folding back (turning) the folding plate 43 forward and backward about each hinge mechanism 42, the folding plate 43 protrudes further forward from the overhanging portion 10D of the partition wall 10 as shown in FIG. As shown in FIG. 12, the protruding position and the retracted position that overlaps with the overhanging portion 10 </ b> D can be easily positioned.

  The track-type transport vehicle according to the present embodiment is provided with a folding plate 43 on the front end side of the overhang portion 10D constituting the partition wall 10 via each hinge mechanism 42. In this embodiment, the folding plate is also provided. By positioning 43 at the projecting position shown in FIG. 11, the cab 17 and the engine cover 16 can be protected from the scattered earth and sand, and earth and sand are accumulated in the gap 18 between the cab 17 and the engine cover 16. Can be prevented. On the other hand, by positioning the folding plate 43 at the retracted position shown in FIG. 12, the transportation height when the track-type transporter is loaded on the trailer and transported can be kept low.

  Moreover, according to the present embodiment, the folding plate 43 that can be folded back and forth around the hinge mechanisms 42 is provided on the front end side of the overhanging portion 10D that constitutes the partition wall 10. The folding plate 43 can be easily positioned at the protruding position shown in FIG. 11 and the storage position shown in FIG. 12 simply by folding the folding plate 43 forward and backward with 42 as the center.

  In each of the above-described embodiments, the case where the vehicle body frame 7 is turnably attached to the track frame 3 of the traveling body 2 via the turning device 8 is illustrated. However, the present invention is not limited to this, and can be applied to, for example, a track-type transport vehicle in which the vehicle body frame 7 is fixed on the track frame 3.

  In the third embodiment described above, the fixing pieces 42A of the plurality of hinge mechanisms 42 are fixed to the mounting board 41, and the mounting board 41 is attached to the overhanging portion 10D of the partition wall 10 using the bolts 22. Is illustrated. However, the present invention is not limited to this, and for example, the fixing piece 42A of each hinge mechanism 42 may be directly fixed to the front end side of the overhang portion 10D using means such as welding.

1 is a front view showing a tracked vehicle according to a first embodiment of the present invention. It is the top view which looked at the track type conveyance vehicle from the upper part. It is the left view which looked at the track-type conveyance vehicle from the arrow III-III direction in FIG. It is the principal part enlarged view of the partial fracture which shows the state which positioned the cover member in FIG. 1 in the protrusion position. It is a principal part enlarged view of the partial fracture | rupture which shows the state which positioned the cover member in the storing position. It is a disassembled perspective view which shows the partition wall of a loading platform, a cover member, etc. It is a front view which shows the state which loaded the tracked vehicle on the trailer. It is the principal part enlarged view of the partial fracture | rupture which shows the state which positioned the cover member by 2nd Embodiment in the protrusion position. It is a principal part enlarged view of the partial fracture | rupture which shows the state which positioned the cover member in the storing position. It is a disassembled perspective view which shows the partition wall of a loading platform, a cover member, etc. It is the principal part enlarged view of the partial fracture | rupture which shows the state which positioned the folding | turning board by 3rd Embodiment in the protrusion position. It is a principal part enlarged view of the partial fracture | rupture which shows the state which positioned the return plate in the storing position. It is a disassembled perspective view which shows the partition wall, folding | turning board, etc. of a loading platform.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tracked vehicle 2 Traveling body 3 Track frame 7 Body frame 9 Loading platform 10 Partition wall 10C Rising part 10D Overhang | projection part 13 Engine 16 Engine cover 17 Cab 17E1 Rear side 18 Gap 21, 31 Cover member 22 Bolt 41 Mounting board 42 Hinge Mechanism 43 Folding plate (cover member)

Claims (4)

A traveling body having a crawler belt, a vehicle body frame provided on the traveling body, a rising portion that is provided on the rear side of the vehicle body frame and rises upward on the front end side, and an overhang portion that projects forward from the rising portion A loading platform provided with a partition wall standing upright, an engine cover that is located on the front side of the loading platform and below the overhanging portion and that is provided on the vehicle body frame and accommodates mounting equipment including the engine, and the engine cover In a tracked vehicle including a cab located on the front side and provided on the front side of the body frame,
The overhang forming the partition wall of the cargo bed is provided with a cover member that is added to protrude further forward,
The cover member is configured as a position-adjustable cover member that is position-adjustable between a protruding position that protrudes forward from the overhanging portion and a storage position that overlaps the overhanging portion. Truck.   The cover member is configured by a plate body in which one end side in the front and rear directions is a fixed end with respect to the overhanging wall and the other end side in the front and rear directions is a free end, and the free end is forward from the front end side of the overhang portion. The track-type transport vehicle according to claim 1, wherein the track-type transport vehicle is configured to be selectively fixed at the projecting position projected to the rear and the retracted position in which the free end is reversed from the front end side of the overhanging portion to the rear. .   The track type according to claim 1, wherein the cover member is configured by a folding plate that can be folded back and forth between the protruding position and the retracted position around the front end side of the overhanging portion. Truck.   The cover member is formed to have a length that covers the rear side of the cab and the engine cover from above, so that when the projecting position is reached, the earth and sand enter the gap between the cab and the engine cover. The track-type transport vehicle according to claim 1, 2, or 3, which is configured to prevent.

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