JP2019006178A - Crawler running device for high-floor truck - Google Patents

Abstract

To solve the problem that a driving worker is apt to step on an inner peripheral rolling surface of a crawler grounding side or to touch the grounding side with his or her toe and the toe accidentally stepping on the inner peripheral rolling surface of the crawler grounding side is likely to be caught between a rotationally traveling rolling surface on which core bar projections of a crawler are formed and a grounding track roller, because he or she drives a high-floor truck to perform harvesting work while often guiding the crawler to a furrow ditch in a field to run the crawler between rib top surfaces and often performs harvesting work, crop management work, and so on around right and left sides of a truck body when performing work operations while storing harvested crop onto a chassis for harvesting of the high-floor truck.SOLUTION: A crawler guard 7 in a cross direction is provided at a proper height K between a track roller shaft 3 of a grounding track roller 2 disposed along a grounding side of a crawler 1 and an inner peripheral surface 6 of a grounding edge 5 formed to protrude outside a rolling surface 4 of the crawler 1 guided by the grounding track roller 2.SELECTED DRAWING: Figure 1

Description

  TECHNICAL FIELD The present invention relates to a crawler traveling device for a high-floor type transport vehicle, and travels on a crawler while straddling a ridge or a groove along a field such as a ridge, a groove formation, a crop strip such as a hotbed, a ridge, a groove strip, and the like. It can be used suitably for harvesting and transporting crops, transporting materials for carrying out cultivation management work, and carrying out cultivation management work. , Improve workability.

  A technique is known in which a core metal projection and a guide groove between the core metal projections are formed along the rolling surface portion at the center in the crawler width direction, and a crawler guide that is fitted and guided in the guide groove is provided.

Japanese Patent Laid-Open No. 2001-122166

  When a harvesting operation is performed by traveling on an elevated carrier, the operation is often performed while traveling in a state where the crawler is positioned in the intercostal groove portion of the field and straddles the upper surface of the ridge. When operating the work while placing the harvested crop on the harvesting platform of the high-floor transporter, the driver must follow the left and right side positions of the car body to perform harvesting and crop management. Stepping on the inner rolling surface of the crawler grounding side with your feet or making it easier to touch this grounding side, stepping on the inner rolling surface of this grounding side by mistake The toe portion is likely to be sandwiched between the rolling surface portion on which the core metal projection of the crawler that rotates and rotates and the grounding wheel, and this is likely to cause danger.

  According to the first aspect of the present invention, the roller shaft 3 of the grounded roller 2 disposed along the grounding side of the crawler 1 and the outer surface of the rolling surface 4 of the crawler 1 guided by the grounded roller 2 are provided. Crawler traveling of a high-floor transporter characterized in that a crawler guard 7 is provided along the front-rear direction at an appropriate height (K) between the inner peripheral surface 6 of the grounding edge portion 5 that is formed to project. The configuration of the device.

  The traveling of the high-floor cart is driven by the engine 19 mounted on the rear end of the vehicle body frame 25, and the crawlers 1, 1 on both the left and right sides are driven in conjunction with the rotation of the drive sprocket 29. While the plant is traveling with the grounding side of the plant being grounded to the bottom of the groove B between the cultivation floor baskets A, the worker C is harvesting the crop C or the container C1 containing the crops C from the top surface of the basket A while traveling or temporarily stopped. It can be loaded on the upper surface of the chassis (or cargo bed) 18 of the inside transport vehicle.

  When the worker M approaches the side of the transport vehicle and loads the harvested crop C on the traveling loading platform 18 or lowers the harvested crop C that has been transported, the crawler 1 rotating at the foot N is rotating. When the rolling surface portion 4 that is the grounding side portion of the contactor 5 or the outside grounding edge portion 5 is stepped on or the foot tip N comes into contact with these grounding side portions, the inner peripheral surface 6 of these grounding edge portions 5 Since the crawler guard 7 is provided over the entire length in the front-rear direction of the grounding edge portion 5, the tip N of the worker M steps on the crawler guard 7 or the crawler guard 7. This prevents the foot N from being stepped on or in contact with the inner peripheral surface 6 of the crawler 1. Alternatively, since the crawler guard 7 is configured in a form along the front-rear direction at an appropriate height K between the inner peripheral surface 6 of the ground contact edge 5 and the upper surface of the crawler guard 7 at the foot N portion. Can be prevented from coming into contact with the inner peripheral surface 6 of the lower grounding edge 5 and can be prevented from being caught between the inner peripheral surface 6 of the foot N and the grounding wheel 2.

  Further, the sandwiching angle a between the rolling surface 4 of the crawler 1 or the inner circumferential surface 6 direction line L and the rolling contact angle line E1 of the grounded rolling wheel 2 that rolls on these surfaces (see FIG. )) Is a pinching angle b between the crawler guard 7 upper surface 6 direction line L and the rolling contact angle line E2 of the ground roller 2 in the form in which the crawler guard 7 is provided (see (b) in FIG. 8). ) (A <b). For this reason, when the foot tip N or the like is stepped on the front side of the sandwiching angle a part, it is easy to be sandwiched between the inner peripheral surface 6 part of the crawler 1 and the grounding wheel 2, but the inner peripheral surface of the crawler 1 In the configuration in which the crawler guard 7 is formed on the six parts, the sandwiching angle b larger than the sandwiching angle a is formed, so that it is difficult to sandwich the foot tip N or the like in this respect.

  According to the second aspect of the present invention, the crawler guard 7 is formed of a bar material, a pipe material, or a plate material.

  The rod member used as the crawler guard 7 is constituted by a bar material 45 (see FIG. 9A) or a pipe or a hollow pipe material 46 (see FIG. 9B). can do. Further, the member can be constituted by a plate material 47 (see FIG. 9C). It is also possible to form the cross-sectional shape of the plate material 47 into a simple flat plate shape that is long in the front-rear direction, a U-shape in front view, an L-shape, or a cross-sectional shape in a dogleg shape. These member lengths are formed to have substantially the same length as the front and rear lengths of the contact side portion of the crawler 1.

  According to the third aspect of the present invention, the front end portion 8 or the rear end portion 9 of the crawler guard 7 is curved or bent toward the concave portion 10 formed on the outer surface of the ground contact wheel 2.

  A grounding roller (end roller) 2 that spans the front end and rear end of the grounding side of the crawler 1 has an outer peripheral surface formed in a V-shaped cross-sectional shape, and the cored bar protrusion 13 is fitted inside. The guide wheel groove 17 is formed, and the right and left outer parts of the grounding wheel 2 are formed on a roll surface 35 in the form of a flat pulley that receives the inner peripheral surface 6 of the outer part of the core metal projection 13 and rotates. The outer surface portion of the grounded rolling wheel 2 forms a hook-shaped recess 10 in which the central portion of the roller shaft 3 portion side is deeply recessed in a hook shape toward the inner rolling surface portion 4 side.

  The crawler guard 7 provided along the front-rear direction facing the grounding edge 5 inner peripheral surface 6 of the grounding side of the crawler 1 has a front end portion 8 formed as a recess 10 on the outer side surface of the front end grounding wheel 2. The rear end portion 9 is curved so as to face the concave portion 10 on the outer side surface of the rear-end grounding wheel 2.

  The front end portion 8 and the rear end portion 9 of the crawler guard 7 may interpose the front end portion at an appropriate depth inside the concave portion 10 of the opposite end roller 2 or at an appropriate interval position on the outer side of the concave portion 10. It can also be approached.

  According to the fourth aspect of the present invention, the outer edge 11 of the crawler guard 7 is set so as not to protrude outward from the outer edge W1 of the crawler width W.

  As described above, the crawler guard 7 is set so as not to protrude outward from the outer edge W1 of the crawler width W. While preventing the surface 6 from being stepped on, the crop C, foreign matter, and the like are prevented from falling over, being placed on, or being entangled with the inner peripheral surface 6. When such a crop C, foreign matter, or the like approaches the outer edge W1 of the crawler 1, it is slid and guided by the outer edge 11 of the crawler guard 7 and protrudes to the outer side of the outer edge W1 of the crawler 1. Thus, the winding between the outer edge W1 and the grounding wheel 2 is prevented.

  The invention according to claim 5 is the left projecting integrally from the metal core 16 along the rolling surface portion 4 at the center between the crawler 1 lateral width between the front and rear grounding rollers 2, 2. In an embodiment in which a crawler guide 15 for fitting and guiding is provided along the guide groove 14 between the right core metal projections 13, 13, the inner peripheral surface 6 of the crawler 1 grounding edge 5 projecting outside the grounding roller 2. A crawler guard 7 is provided at a position higher than the substantially horizontal portion of the crawler guide 15 along the upper portion.

  In the case where the crawler guard 7 is formed along the inner peripheral surface 6 of the crawler 1 grounding edge portion 5, a crawler guide 15 that fits and guides along the guide groove 14 portion between the core metal protrusions 13 is provided. Thus, by providing the crawler guard 7 provided along the inner peripheral surface 6 of the crawler 1 grounding edge 5 at a position higher than the substantially horizontal portion of the crawler guide 15, Even if the crawler 1 is mistakenly inserted deeply into the rolling surface portion 4 at the center of the grounding side, it is received by the crawler guide 15 and the crawler guard 7 inside and outside, and the foot tip N is located at the center of the grounding side. The engagement movement by the cored bar projection 13 protruding on the rolling surface portion 4 is prevented. Further, even when an adjacent crop C or a foreign object approaches, the crawler guard 7 and the crawler guide 15 are unlikely to intervene between the crawler 1 rolling surface portion 4 and the grounding wheel 2, and the smooth crawler 1. To maintain the driving and running state.

  The crawler guide 15 is in a state of being fitted and guided in the guide groove 14 between the left and right cored bar projections 13 at the center of the grounding side of the crawler 1, and guides the running rotation of the crawler 1. Or it is in the vicinity of the grounding wheel 2 to prevent the gravel and foreign matter from entering and entering, thereby preventing the crawler 1 from coming off from the grounding wheel 2 and the like.

  Even when the ground traveling surface of the crawler 1 is inclined to the left and right depending on the shape of the uneven surface of the traveling ground and the vehicle body is greatly inclined and swung, the traveling rotation guide of the crawler 1 is smoothly performed. Stable running is performed while absorbing the rocking of the vehicle body by the tilting rocking of the ground side of the crawler 1.

  According to the first aspect of the present invention, the crawler 1 of the high-floor transporter is high, and the distance between the ground side and the upper side of the crawler 1 is large, and the foot N is inserted into the upper surface of the ground side. Even if it is a form which is easy to be performed, if the foot tip N steps on the rolling surface part 4 position of the grounding side part of the crawler 1, it will step on the crawler guard 7, and the stepping on the upper surface of the rolling surface part 4 is prevented. In addition, when the foot tip N steps on the inner peripheral surface 6 that is the upper side surface of the grounding edge portion 5, even if it is moved rearward by the rotating crawler 1, Stepping can be performed easily and easily.

  When the foot N steps on the upper surface (inner peripheral surface 6) of the contact side of the crawler 1, there is a crawler guard 7 on the inner peripheral surface 6 of the contact edge 5 that is the outer surface of the rolling surface 4, The crawler guard 7 can prevent direct strong stepping on the rolling surface portion 4. In addition, since the crawler guard 7 forms an appropriate interval with the inner peripheral surface 6 of the ground edge 5, it is possible to prevent the intrusion and insertion of the foot N portion from this interval. Further, removal and retraction to the outer side can be performed quickly and smoothly, and further, there is an effect that pebbles, foreign matters and the like that have entered the inner peripheral surface 6 of the crawler 1 are easily discharged to the outside of the crawler 1.

  According to the second aspect of the present invention, the crawler guard 7 is formed of a bar, a pipe, a plate, or the like, thereby simplifying the configuration, reducing the weight, and reducing the cost. In addition, by configuring the crawler guard 7 with a simple form such as the rod member, a large gap is formed between the track frame 27 and the like, and intrusion of the foot tip N portion and foreign matters is performed. Although it is easy, it is easy to discharge and take out these intruding objects, and it is possible to facilitate inspection and cleaning.

  According to the third aspect of the present invention, when the crop C is located close to the side of the vehicle body or the foot tip N of the worker M is approached when the high-floor vehicle is traveling, the crawler guard 7 The crop edge C or the tip N portion of the front end portion 8 or the rear end portion 9 slidably touching the outside of the curved surface, the concave portion 10 of the end roller 2, and the grounding edge portion 5 in front of this It is prevented from being caught in the clamping interval with the peripheral surface 6, and is pushed and guided to the outside of the concave portion 10 of the end roller, so that the crop C, the foot N portion, etc. are wound around the crawler 1 rotating portion. Clogging and pinching can be prevented.

  In addition, the above-described effect can be effectively achieved at a low cost by a simple form of bending or bending the front and rear end portions of the crawler guard 7. Furthermore, since the outer edge 11 of the crawler guard 7 does not protrude outwardly from the outer edge W1 of the crawler width W, the crawler guard 7 can run without damaging the crops and without breaking the wrinkles.

  According to a fourth aspect of the present invention, the crawler guard 7 on the inner peripheral surface 6 of the ground contact edge 5 is such that the outer edge 11 of the crawler guard 7 is in the vicinity above the outer edge 12 of the ground edge 5 of the crawler 1. The position or the inner edge of the outer edge 12 is appropriately positioned and formed along the front-rear direction. Preventing scavenging of foreign matters and the like, maintaining the inner peripheral surface 6 of the grounding side of the crawler 1 clean, and maintaining smooth driving of the crawler 1 and a running state. Alternatively, since the outer edge 11 of the crawler guard 7 can approach the inner side of the outer edge 12 of the crawler 1 grounding edge 5, it is possible to effectively maintain the effect of eliminating the protrusion of the crop C and the like. Even when the toe N part of the person M steps off the upper part of the crawler guard 7, the toe N part is difficult to step on the inner peripheral surface 6 of the crawler 1 grounding side directly and strongly. By being stepped on and guided to the outer traveling ground, the worker M can follow the work and maintain walking safety.

  According to the fifth aspect of the present invention, the rolling surface portion 4 at the center portion of the crawler width W has left and right cored bar protrusions 13 and 13 projectingly fitted to and guided by the grounding wheel 2, and this guide groove is particularly formed. At 14 part, the crawler guide 15 and the grounding roller 2 are guided to rotate so as to be scraped. The crawler guide 15 is fitted along the rolling surface portion 4 guide groove 14 portion of the crawler 1 so that the crawler 1 ground side smoothly rotates. At the center of the inner peripheral surface 6 of the crawler 1 of the crawler 1, the worker M foot N portion is deeply stepped on and intervened between the front and rear ground rollers 2 and 2 and the crawler guard 7. Although it is difficult, if the foot N portion is accidentally intervened, the foot N portion is received by the crawler guide 15 in the back guide groove 14 portion, and the inner peripheral surface 6 or the rolling surface portion 4 It is difficult to step on the rotating portion such as the cored bar protrusion 13 or the like, and it is possible to protect the toe N from being drawn into the meshing portion between the rolling surface portion 4 and the grounding wheel 2.

The side view of an elevated carrier. The plan view. The rear view. The side view of a crawler part. The top view of a crawler part, and the partial cross-section enlarged view of a grounding wheel part. The expanded back sectional view of the grounding wheel part. The rear view which shows the working state of an elevated carrier. The partial side view which shows the driving | running | working state of a crawler. The perspective view of a crawler guard, and the one part expanded sectional perspective view which show another Example.

  On the basis of the drawings, the stilt carrier vehicle is provided with a pair of crawlers 1 and 1 on both left and right sides under a chassis (loading platform) 18 that can be expanded and contracted in the left-right width direction. The engine 19 and the operating device 20 are arranged in the portion (left end portion in the illustrated example). An expansion / contraction table 21 that can move in the left-right direction along the right end of the chassis 18 is provided, and the expansion / contraction table 21 is moved horizontally with respect to the chassis 18 body by expansion / contraction means S such as hydraulic expansion / contraction of a cylinder or a screw mechanism. The traveling width, the working width, or the crop C mounting width can be changed and adjusted, and can correspond to the working rod width. Between the chassis 18 main body and the expansion / contraction table 21, in addition to the expansion / contraction means S, a connecting frame 23 that can be expanded / contracted, an interlocking shaft (spline shaft) 24, an interlocking shaft 22 of the front traveling clutch, and the like are arranged. By the expansion / contraction means S, the width of the chassis 18 at each expansion / contraction position guided and the left and right crawlers 1 and 1 interval (tread) are maintained, and the crawler 1 on the expansion / contraction table 21 side travels in the forward direction F or the reverse direction R. It is a form that can be maintained in the transmission state.

  The pair of left and right crawlers 1, 1 are configured in a substantially bilaterally symmetric form with respect to the center line of the chassis 18, and the left crawler 1 is configured along the left end of the lower part of the chassis 18 body side, The crawler 1 is configured along the lower side of the expansion / contraction table 21.

  Below the chassis 18 and the expansion / contraction table 21, a track frame 27 is supported at a lower end portion from a body frame 25 via a support arm 26, and a non-grounded end portion of the front end portion disposed on the track frame 27 is supported. The wheel 28, the rear non-grounding end wheel 28 </ b> R and the drive sprocket 29 above the wheel 28, and the plurality of grounding wheels 2 disposed along the bottom (grounding side) between them. The crawler 1 in the form of a rubber-like endless belt is stretched over.

  The crawler 1 forms a meshing hole 30 that meshes with the sprocket 29 at the center in the lateral crawler width W direction, and a reinforcing wire 32 in the front-rear direction positioned on the lateral side at each interval between the front and rear meshing holes 30. , 32 is embedded, and left and right cored bar projections 13, 13 projecting from the central part of the cored bar 16 are projected to the inner peripheral surface part of the central part in the width direction of the crawler 1, The drive sprocket 29 rotates in mesh and forms a rolling surface portion 4 for rolling and guiding each grounded roller 2. Each grounded roller 2, non-grounded end rollers 28, 28R, etc. have a central boss portion 34 rotatably supported around the wheel shaft 3, and a cylindrical or roll-shaped roll with the peripheral portion facing left and right outside. A surface 35 is formed so that the concave portion 10 of the opening is formed in a deep ring shape toward the outside, and the outer surface of the cored bar projection 13 is formed in the roller groove 17 portion between the left and right flange portions 33, 33. The side is fitted and guided.

  Further, a crawler guide 15 made of a rod-like material having a front upper end attached to the track frame 27 is brought close to the guide groove 14 in the central portion of the crawler width W at the space between the front and rear grounding rollers 2 and 2. It is configured so as to be fitted and guided, and the core metal projection 13 of the rolling surface portion 4 of the crawler 1 is sandwiched between the inner crawler guide 15 and the rolling groove 17 portion of the outer grounded rolling wheel 2 so as to travel. Guided to prevent derailment. A flat roll-shaped roll surface 35 is formed on the outer side of the core metal protrusion 13 to which the collar-shaped ring 33 is in rolling contact. The roll surface 35 of the ground roller 2 receives and guides the inner peripheral surface 6 of the ground edge 5 of the crawler 7.

  The crawler width W region is formed so as to protrude wider than the width of the rolling surface portion 4 that is supported by rolling of the grounding roller 2, thereby constituting the grounding edge portion 5. The inner peripheral surface 6 of the ground contact edge 5 is formed wider at the outer position than the outer edge of the ground contact wheel 2, that is, the outer edge of the roll surface 35 of the bowl-shaped wheel 33. Moreover, even if foreign matter or the like rises on the inner peripheral surface 6 so as to be slightly lower than the inner peripheral surface 6 so that the foreign matter or the like does not easily climb on the inner peripheral surface 6, Depending on the surface, it is formed in a form that is easily removed to the outside.

  The crawler guard 7 is provided along the inner peripheral surface 6 of the outer grounding edge 5 of the grounding side of the crawler 1 in the form of a guard rod, guard rod, or guardrail. The crawler guard 7 has a cross-sectional form such as a round bar shape (see (A) in FIG. 9), a round pipe shape (see (B) in FIG. 9), or a plate shape (see (C) in FIG. 9). The crawler 1 is formed to have a length substantially equal to the front and rear length of the grounding side portion, and is detachably attached to the outer surface of the track frame 27 by bolts 37 or the like via appropriate front and rear locations and mounting brackets 36. Further, the mounting position can be moved and adjusted, so that it is easy to adjust and set the interval position of the crawler guard 7 with respect to the inner peripheral surface 6 of the crawler 1 and the horizontal installation degree. In addition, the cross-sectional shape of the crawler guard 7 is not limited to a round shape, and may be a square-shaped muku material or a pipe material, and the material is not particularly limited.

  The crawler guard 7 to be mounted in this way is provided horizontally and parallel to the front and rear sides along the inner peripheral surface 6 of the ground edge 5 of the crawler 1. Is set so narrow that it is difficult for the foot N portion of the worker M to enter, and is configured along the outer edge 12 of the inner peripheral surface 6 of the crawler 1 grounding edge 5. When the crawler guard 7 protrudes outward from the outer edge 12 of the crawler 1, the crawler guard 7 is likely to come into contact with an adjacent obstacle during traveling and is subject to traveling work resistance. However, it is preferable to set the position directly above the outer edge 12 of the ground contact edge 5 of the crawler 1 or the inner position thereof.

  The front end portion 8 and the rear end portion 9 of the crawler guard 7 are formed on the outer side of the roll surface 35 on the outer side of the grounding wheel 2 at the outer position of the grounding wheel (end wheel) 2 facing them. It is configured to be bent or bent toward the concave portion 10 so that the tip portion intervenes in the concave portion 10 or closes into the concave portion 10. During forward and backward travel, the front end 8 or the rear end of the crawler guard 7 is configured to easily prevent scooping of the adjacent crop C or foreign matter to the crawler 1 side.

  Further, the front end portion 8 or the rear end portion 9 of these crawler guards 7 can be bent or bent inward so that they can be deeply fitted or intervened inside the concave portion 10 on the outer surface of the grounding wheel 2. The scooping action of crops C and the like by the front end portion 8 or the rear end portion 9 of the crawler guard 7 is effectively prevented.

  The crawler guide 15 is configured between the front and rear grounding rollers 2 and 2 along the grounding side portion of the crawler 1, and the upper end portion is attached to the track frame 27 with bolts 37 and 38. The lower end portion of the crawler guide 15 intervenes in the guide groove 14 between the left and right core metal projections 13 and 13 of the crawler 1 along the front-rear direction, guides driving of the crawler 1 and meanders the crawler 1. The traveling posture is stably maintained so that it does not come off from the grounding wheel 2 even if it is tilted sideways, or is swung up and down. Further, the grounding roller 2 at the front and rear intermediate portion has an equalizer wheel configuration that can swing around a shaft 3A, and a crawler guide 15 is also provided at the center of the equalizer wheel.

  In this way, the crawler guide 15 is positioned in the guide groove 14 between the cored bar protrusions 13 and 13 at the center of the crawler width W, and guides the rotation of the crawler 1. On the other hand, the crawler guard 7 is configured along the inner peripheral surface of the outer edge 12 of the crawler 1 to prevent the entry and intervention of obstacles from the outside. The position of the crawler guard 7 is appropriately set to a high position with respect to the crawler guide 15. Even if the foot N of the worker M steps on or over the crawler guard 7 and is intervened on the rolling surface 4 of the crawler 1 from the space between the front and rear grounding wheels 2, 2 of the crawler 1, The tip N is unlikely to come into contact with the rotating portion of the core metal projection 13 of the rolling surface portion 4 and is received by the inner crawler guide 15, thereby preventing erroneous crushing of the foot tip N by the crawler guard 7.

  An engine 19 and an operation device 20 are disposed at the rear end of the chassis 18, and the engine 19 drives and drives the crawler 1 by transmitting and rotating a drive sprocket 29 at the upper rear end of the crawler 1 via a transmission device 39. can do. The operating device 20 includes a side clutch lever 41, a travel clutch lever 42, a transmission lever 44, and the like on the front side of the handle 40. Further, a part of the auxiliary operation mechanism 43 is arranged at the front end portion of the vehicle body 18 so that it can be operated from the position of the front end portion of the chassis 18.

  An ungrounded end roller 28 for maintaining the tension of the crawler 1 is provided at the front end of the track frame 27, and is maintained at a constant tension by a tension bolt 44B.

1 Crawler 2 Grounded Roller (End Roller)
DESCRIPTION OF SYMBOLS 3 Rolling shaft 4 Rolling surface part 5 Grounding edge part 6 Inner peripheral surface 7 Crawler guard 8 Front end part 9 Rear end part 10 Recessed part 11 Outer edge part 13 Core metal protrusion 14 Guide groove 15 Crawler guide 16 Between core metal H K As appropriate W Crawler width W1 Outer edge

Claims (5)

  The roller shaft (3) portion of the ground roller (2) disposed along the ground side of the crawler (1), and the rolling surface portion (4) of the crawler (1) guided by the ground roller (2). The crawler guard (7) along the front-rear direction is provided at an appropriate height (K) between the inner peripheral surface (6) of the grounding edge portion (5) that is formed on the outer side of (5). A crawler traveling device for a raised-floor transport vehicle.   The crawler traveling device for a high-floor transporter according to claim 1, wherein the crawler guard (7) is formed of a bar material, a pipe material, or a plate material.   The front end portion (8) or the rear end portion (9) of the crawler guard 7 is curved or bent toward the concave portion (10) formed on the outer surface of the grounding wheel (2). The crawler traveling device for an elevated floor transport vehicle according to claim 1 or 2.   The outer edge (11) of the crawler guard (7) is set so as not to protrude outward from the outer edge (W1) of the crawler width (W). Crawler traveling device for high-floor carts.   The crawler (1) between the front and rear grounding rollers (2) and (2) is integrally protruded along the rolling surface portion (4) at the central portion between the lateral widths and from each core metal (16). In a mode in which a crawler guide (15) for fitting and guiding is provided along a guide groove (14) between the left and right core metal protrusions (13) and (13), the outer side of the grounding wheel (2) is stretched. A crawler guard (7) is provided at a position higher than the substantially horizontal portion of the crawler guide (15) along the upper part of the inner peripheral surface (6) of the crawler (1) grounding edge (5) The crawler traveling device for an elevated floor transport vehicle according to claim 1, 2, 3, or 4.

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