JP2012171511A - Crawler traveling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a crawler traveling device which can easily adjust an energization force acting on a tension ring and can generate necessary strength by small weight.SOLUTION: A tension applying mechanism T for energizing a tension ring 24 to project forward includes a guiding means TG for guiding the ring in an obliquely downward direction with respect to a longitudinal direction of track frame 21, a compression coil spring 50, and an energization force adjusting means TC for adjusting the energization force. Furthermore, an adjusting section 57B for adjusting the energization force in such a state that it projects from a supporting wall 55 of rear end of the tension applying mechanism T, and a front frame 41 for supporting an end of a front end side in the track frame 21 is arranged in such a manner that it is energized to a traveling body center side with the tension applying mechanism T as a reference.

Description

  The present invention includes a driving wheel that rotates by a driving force, a plurality of grounded wheels provided in a track frame that is long in the front-rear direction, and a tension wheel that is disposed at one end of the track frame. The present invention relates to a crawler traveling device around which a crawler belt is wound.

  As a crawler traveling device configured as described above, Patent Document 1 discloses that a track frame (a main frame in the document) includes a plurality of ground wheels, a driving wheel above the track frame, and a front end side of the track frame. 1 includes a tension ring (an idler in the literature) and a configuration in which a crawler belt is wound around these.

  In Patent Document 1, as an apparatus for applying tension to a tension ring, an outer cylinder is provided on the upper surface on the front end side of the track frame, and the inner cylinder supporting the tension ring is moved back and forth with respect to the outer cylinder. A configuration is shown in which a spring that is freely inserted and urges the inner cylinder in the protruding direction is provided inside the inner cylinder. In the configuration of this Patent Document 1, a spring receiver for adjusting the biasing force of the spring against the rear wall of the end portion on the opposite side of the tension ring in the outer cylinder is provided with a screw-type position adjustable. When adjusting the force, the part protruding from the rear wall is artificially rotated.

JP 2008-174087 A

  When adjusting the tension with the crawler traveling device shown in Patent Document 1, the protruding portion of the shaft-shaped spring support is rotated by a tool such as a spanner. However, in the configuration of Patent Document 1, since the spring receiver is in a positional relationship that is relatively close to the track frame, the tool may easily come into contact with the track frame, and the rotation operation may be difficult. In particular, in the configuration in which the spring receiver is close to the track frame, the spring receiver is disposed at a low level, so that mud or the like is likely to adhere, making operation with a tool more difficult.

  Further, in this type of crawler traveling device, it is also desired to reduce the weight of the entire crawler traveling device while maintaining the strength of the track frame and the frames connected thereto at a required value.

  An object of the present invention is to rationally configure a crawler traveling device that can easily adjust the urging force applied to the tension wheel and that can provide the necessary strength and can be reduced in weight.

  A feature of the present invention is that a driving wheel that rotates by a driving force, a plurality of grounding wheels provided in a track frame that is long in the front-rear direction, and a tension wheel that is disposed at one end of the track frame. A crawler traveling device around which a crawler belt is wound, wherein a tension applying mechanism that projects and urges the tension wheel guides the tension wheel in a guide direction obliquely below the longitudinal direction of the track frame. In order to do this, it is provided with guide means provided on the upper surface of the track frame, urging means for urging the tension ring in the guide direction, and urging force adjusting means for adjusting the urging force of the urging means, An adjusting portion for artificially adjusting the urging force by the urging force adjusting means is provided on the guide means from the end opposite to the tension wheel. And a support frame that supports an end portion of the track frame on which the tension applying mechanism is disposed, and is deviated toward the center of the traveling machine body with respect to the tension applying mechanism. In the point.

According to this configuration, the tension wheel is projected and biased obliquely downward by the biasing force of the tension applying mechanism, and conversely, the adjustment portion of the biasing force adjusting means is diagonally upward on the upper surface of the track frame. Will head. Accordingly, since the adjusting portion can be separated from the upper surface of the track frame and a space can be secured below the adjusting portion, a tool such as a spanner can be prevented from contacting the track frame when the urging force is artificially adjusted. Further, in this configuration, since the adjusting portion is separated upward from the track frame, mud is difficult to adhere, and inconvenience that makes it difficult to adjust the urging force is suppressed.
In addition, by supporting the end of the track frame with the support frame, for example, the track frame can be firmly supported even with a small support frame compared to frames connected to the center portion in the front-rear direction of the track frame. Become. Further, since the support frame is displaced toward the center of the traveling machine body, the support frame is separated from the adjusting portion of the urging force adjusting means, and when the urging force is artificially adjusted from the outside of the crawler traveling device. In addition, a tool such as a spanner is not required to come into contact with the support frame.
As a result, a crawler traveling device has been constructed that makes it possible to easily adjust the urging force that acts on the tension wheel, while at the same time providing the necessary strength and reducing the weight.

  In the present invention, the guide means includes a support cylinder that supports the tension ring, and a guide cylinder that is slidably fitted in or externally attached to the support cylinder. A support wall for supporting the biasing force adjusting means is formed on the opposite side of the tension ring, and the support wall has an extending portion extending downward, and this extending portion is fixed to the upper surface of the track frame. At the same time, the guide cylinder may be supported by the track frame in an inclined posture by fixing the end of the guide cylinder where the tension ring is disposed to the upper surface of the track frame.

  According to this, in order to support the guide cylinder body in an inclined posture with respect to the track frame, the extension portion of the support wall on the opposite side of the tension ring is provided on the track frame of the guide cylinder body constituting the guide means. The tension wheel side is fixed to the upper surface of the track frame. Therefore, by using a configuration in which a part of the support wall for supporting the biasing force adjusting means is extended, the guide means can be supported on the track frame in an inclined posture without using a special member.

  In the present invention, the biasing force adjusting means includes a male screw member that penetrates the support wall in the guide direction in a screwed state with a female screw portion formed on the support wall, and the tension ring of the male screw member A pressing body is provided on the side, the adjusting portion is formed on the opposite side of the tension ring of the male screw member, a pressure receiving wall is formed inside the support cylinder, and the urging means is connected to the pressing body. You may comprise with the compression coil spring arrange | positioned between the said pressure receiving walls.

  According to this, by providing an urging means composed of a compression coil spring between the pressure receiving wall of the support cylinder and the pressing body, an urging force is applied between the support cylinder and the guide cylinder so that tension is applied. It is possible to project and urge the ring, and it is also possible to adjust the urging force by changing the distance between the pressure receiving wall and the pressing body by rotating the adjustment part formed on the outer end side of the male screw member It becomes.

  In the present invention, an opening that allows the pressing body to be visually recognized may be formed in a side wall of the support cylinder and a side wall of the guide cylinder.

  According to this, since the position of the pressing body can be visually recognized from the opening, the amount of compression of the compression coil spring can be grasped from the position of the pressing body with respect to the opening, and the urging force acting on the crawler belt from the tension wheel can be recognized.

  In the present invention, the guide means includes a support cylinder that supports the tension ring, and a guide cylinder that is slidably fitted into or externally attached to the support cylinder, and the lower surface of the guide cylinder The guide cylinder may be supported by the track frame in an inclined posture in a state where an open space is formed between the upper surface of the track frame and an upper surface of the track frame.

  According to this, since the open space opens to the outside of the traveling machine, even if mud or the like enters between the support cylinder and the track frame, for example, the mud in the open space can be easily flushed with water. The space can be easily cleaned. In addition, since the support cylinder and the track frame are partly in contact with each other, even when the support cylinder is fixed to the track frame, the number of welding points can be reduced and the manufacturing labor can be reduced.

It is the whole tractor side view. It is a side view of a crawler traveling device. It is a longitudinal rear view of the crawler traveling device on the left side. It is the IV-IV sectional view taken on the line of FIG. It is the VV sectional view taken on the line of FIG. It is a disassembled perspective view of a frame unit and a tension application mechanism. It is sectional drawing which shows the adjustment structure of the urging | biasing force by an urging | biasing force adjustment means.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
〔overall structure〕
As shown in FIG. 1, the traveling machine body A includes a pair of left and right front wheels 1 and a pair of left and right crawler traveling devices C, and includes an engine 3 inside an engine bonnet 2 at the front portion of the traveling machine body A. A semi-crawler type tractor is configured by arranging a driver seat 5 at an intermediate position of the wheel fender 4.

  In this tractor, a clutch housing 6, a center frame 7, and a transmission case 8 are connected in this order to the rear side of the engine 3. The mission case 8 is disposed below the driver seat 5, and the transmission case 8 incorporates a transmission system that transmits driving force to the left and right crawler traveling devices C. The traveling machine body A travels from the mission case 8. A transmission system (not shown) that transmits driving force to the left and right front wheels 1 is provided.

  At the rear of the mission case 8 is a pair of left and right lift arms 9 that swing up and down by the operation of a hydraulic cylinder (not shown) provided on the top of the mission case 8, and power that allows the driving force to be taken out to the outside. A take-out shaft (not shown) is provided. Thereby, working devices such as a rotary tillage device and a plow are connected to be freely raised and lowered by the left and right lift arms 9, and a driving force from the power take-off shaft is transmitted to a driving work device such as a rotary tilling device. Work becomes possible.

  A steering wheel 10 for steering (steering) the left and right front wheels 1 disposed at the front position of the driver seat 5 is disposed. A clutch pedal 11 is disposed on the lower left side of the steering wheel 10 and on the right side. A brake pedal (not shown) is arranged.

  This tractor includes a rear axle case 15 in a protruding state on both side surfaces of the rear portion of the transmission case 8, and includes an outer end portion of the rear axle 16 accommodated in the rear axle case 15 so as to protrude laterally. The rear axle 16 is provided with drive wheels 22 of the crawler traveling device C. In this tractor, a configuration including the crawler traveling device C is shown, but a rear wheel (not shown) may be provided instead of the crawler traveling device C. When the rear wheel is provided, the rear axle 16 is provided. Is connected to the rear wheel.

[Crawler traveling device]
As shown in FIGS. 2 to 6, the crawler traveling device C supports a track frame 21 having a long posture in the front-rear direction on the traveling machine body A via the frame unit CF, and rotates by the driving force of the rear axle 16. A sprocket-type drive wheel 22, a plurality (three) of grounded rolling wheels 23 provided on the track frame 21, a tension wheel 24 provided at the front end of the track frame 21, and a rear end of the track frame 21 The driven wheel 25 and a crawler belt 26 wound around these are provided.

  A pair of connecting frames 30 made of an angle material on the lower surface side of the mission case 8 and arranged in a lateral direction are arranged in parallel, and the first connecting plate 31 fixed to each of the connecting frames 30 is fixed to the mission case 8 by the first connecting bolt 31B. It is connected to the side. Thereby, each connection frame 30 is supported by the mission case 8.

  A pair of holding frames 33 made of an angle member are fixed to the outer periphery of a cylindrical bearing member 32 having a laterally long posture, and a pair of holding frames 33 are placed on the connecting frame 30 in a state where the holding frames 33 are mounted on the connecting frame 30. The second connecting plate 34 fixed to the upper surface of the holding frame 33 is connected to the protruding end of the rear axle case 15 by the second bolt 34B, and the holding frame 33 is connected to the connecting frame 30 by the third bolt 33B. Thus, the bearing member 32 is supported by the connecting frame 30 and the rear axle case 15.

  A rocking shaft 36 is supported in the bearing member 32 so as to be rotatable. The bearing member 32 is disposed in a position parallel to the rear axle 16 at a position directly below the rear axle 16, and is provided with the flange plate 38 and the frame unit CF described above at the outer end. A disc-shaped stopper plate 37 for retaining the shaft is connected to the inner end of the swing shaft 36 by a fixing bolt 37B. The swing shaft 36 is used for lubrication between its outer peripheral surface and the inner periphery of the shaft holding cylinder. A supply path 36 </ b> A for supplying the grease is formed, and a grease nipple 36 </ b> B is provided at the outer end of the swing shaft 36.

  A restriction opening 38A is formed in the flange plate 38, and a stopper piece 33S protruding outward from the holding frame 33 is inserted into the restriction opening 38A, thereby swinging by contact of the stopper piece 33S with the opening edge of the restriction opening 38A. The swing limit of the shaft 36 is set.

  The frame unit CF includes a front frame 41 (an example of a support frame) whose base end is connected to the bearing member 32, a center frame 42, and a rear frame 43, which are located on the center side of the traveling machine body A with respect to the track frame 21. It is provided with a deviation. A square pipe material is used for the front frame 41, and a lower end is connected to an inward extending portion 55 </ b> B of a support wall 55 fixed to the front end side of the track frame 21. The central frame 42 is made of a plate material having a wide surface in the front-rear direction. This plate material is made wider toward the lower end side (the dimension in the lateral direction of the traveling machine body A is increased), and the outer end side (the end part side away from the center of the traveling machine body A) of the lower ends is tracked. The frame 21 is connected to the center position in the front-rear direction in a vertical posture. The rear frame 43 is made of a square pipe material, and the lower end is connected to an extending piece 45B of a connecting wall 45 fixed on the rear end side of the track frame 21. When the swing shaft 36, the front frame 41, the center frame 42, the rear frame 43, the support wall 55, the connecting wall 45, the support cylinder 53 and the guide cylinder 54 described later are made of steel and fixed. When connected, welding is performed.

  As shown in FIG. 2, the frame unit CF is formed in a triangular shape having a bearing member 32 as a top, a track frame 21 as a bottom, a front frame 41 and a rear frame 43 as two sides in a side view. 42 is connected to an intermediate position in the front-rear direction of the track frame 21. Due to such a shape, a space opening inward and outward is formed between the front frame 41 and the rear frame 43 above the track frame 21, and mud that has entered the upper surface of the track frame 21 is easily discharged, and maintenance is performed. Also make it easier.

[Crawler travel device: Drive wheel]
The drive wheel 22 is composed of two semicircular members having a plurality of protrusions 22A on the outer periphery, and these are integrated by connecting them to a disk-shaped hub 16A on the outer end of the rear axle 16 with a hub bolt 17. In this state, it is connected to the rear axle 16.

[Crawler traveling device: grounding wheel]
The grounding wheel 23 is configured as an outer ring type having a pair of left and right grounding wheel bodies 23A straddling a pair of core metal projections 26A projecting to the inner periphery of the crawler belt 26, and penetrates the left and right grounding wheel bodies 23A. The shaft body 27 is rotatably supported by a bearing block 29 via a pair of ball bearings 28. The bearing block 29 is supported by being connected to the lower surface of the track frame 21 by a block bolt 29B. A grease supply path 27A is formed inside the shaft body 27, and a grease nipple 27B for supplying grease to the supply path 27A is provided at the end of the shaft body 27.

[Crawler travel device: tensioning mechanism]
The tension wheel 24 is configured as an inner ring type disposed at an intermediate position between a pair of cored bar protrusions 26 </ b> A protruding to the inner periphery of the crawler belt 26, and is projected and urged by a tension applying mechanism T on the front end side of the track frame 21. Has been. The tension applying mechanism T is a guide means TG that guides the tension ring 24 in a guide direction that is obliquely downward toward the front side with respect to the longitudinal direction of the track frame 21, and a biasing means that biases the tension ring 24 in the guide direction. A compression coil spring 50 and urging force adjusting means TC for adjusting the urging force of the compression coil spring 50 are provided.

  The guide means TG has a square pipe-shaped support cylinder 53 that is connected to a front frame 51 that rotatably supports the tension ring 24 with a pressure receiving wall 52 interposed therebetween, and an angle at which the support cylinder 53 is slidably fitted. A pipe-shaped guide cylinder 54 is formed, and a support wall 55 that supports the biasing force adjusting means TC is connected to the guide cylinder 54 on the side opposite to the tension wheel 24. The support wall 55 is fixed in a state in which the opening at the rear end of the guide cylinder 54 is closed, and includes a lower extension 55A extending downward and an inner extension 55B extending inward of the machine body. The guide means TG may have a structure in which the guide cylinder 54 is fitted in the support cylinder 53.

  The guide cylinder 54 is disposed at a position overlapping the track frame 21 in plan view, and the lower extension 55A of the support wall 55 is fixed to the upper surface of the track frame 21 by welding, so that the guide cylinder 54 The end side where the tension ring 24 is disposed is fixed to the upper surface of the track frame 21 by welding. As a result, the guide cylinder 54 is supported by the track frame 21 in an inclined posture. Further, the lower end of the front frame 41 is connected to the inner extension 55B by welding. As shown in FIG. 2, only the front end side and the rear end side of the lower portion of the guide cylinder 54 are connected to the track frame 21 by welding, and the lower surface of the guide cylinder 54, the upper surface of the track frame 21, and the support wall 55. In the range surrounded by the lower extension 55A, no reinforcing vertical rib or the like is provided, and the space between the lower surface of the guide cylinder 54 and the upper surface of the track frame 21 opens in the direction outside the traveling machine. A triangular open space S is formed in a side view.

  The urging force adjusting means TC is a bolt that penetrates the support wall 55 along the guide direction in a screwed state with a fixing nut 56 (an example of a female thread portion) fixed to the inner surface side (the tension wheel 24 side) of the support wall 55. 57 (an example of a male screw member), a pressing body 57A is provided on the inner end (tension wheel 24 side) of the bolt 57, and the cross-sectional shape is normal on the outer end side (opposite side of the tension wheel 24) of the bolt 57. An adjustment portion 57B formed in a hexagonal shape is provided. Further, a lock nut 58 is screwed to the outer side of the support wall 55 of the bolt 57. With such a configuration, the bolt 57 and the adjustment portion 57B are disposed at positions that are relatively away from the front frame 41. The adjusting portion 57 </ b> B may be configured such that a bolt head having a larger diameter than the bolt 57 or a large knob that can be manually operated is connected and fixed to the outer end of the bolt 57.

  When the compression coil spring 50 is disposed between the pressure receiving wall 52 inside the support cylinder 53 and the pressing body 57A, and when adjusting the urging force acting on the tension ring 24 from the compression coil spring 50, the lock nut 58 is provided. In a state where it is operated with a tool such as a spanner and separated from the support wall 55, the adjusting portion 57B of the bolt 57 of the urging force adjusting means TC is rotated with a tool such as a spanner. Then, by setting the lock nut 58 at a position where the lock nut 58 is crimped to the support wall 55 by an operation with a tool, the rotation operation of the bolt 57 becomes impossible, and the urging force adjusting means TC is set in the locked state.

  Long hole-like openings 53A and 54A along the operation direction of the bolt 57 are formed in the side wall of the support cylinder 53 and the side wall of the guide cylinder 54, as shown in FIGS. 7 (a) to 7 (b). It is comprised so that the position of 57 A of press bodies can be confirmed by visual recognition through these opening 53A, 54A. In particular, a linear indicator portion 53B is formed on the edge of the rear end side (opposite side of the tension ring 24) of the opening 53A of the support cylinder 53, and the rear end side of the opening 54A of the guide cylinder 54 is formed. An end edge (on the side opposite to the tension ring 24) is an arcuate reference portion 54B. From such a configuration, the urging force acting from the compression coil spring 50 can be grasped from the relative distance between the indicator portion 53B and the reference portion 54B.

  The tension ring 24 is rotatably supported via a ball bearing 28 with respect to a shaft body 27 supported at both ends by the front frame 51, and a grease supply path 27A is formed inside the shaft body 27. A grease nipple 27B for supplying grease to the supply path 27A is provided at the end of the shaft body 27.

[Crawler travel device: driven wheel]
The driven wheel 25 is configured as an inner ring type that is disposed at an intermediate position between a pair of cored bar protrusions 26 </ b> A projecting to the inner periphery of the crawler belt 26, and includes a connecting wall 45 fixed to the rear end of the track frame 21. It is supported by a rear frame 46 connected to the rear end. As a specific configuration, the connecting wall 45 is connected and fixed in an oblique posture with respect to the rear end of the track frame 21, and the rear side of the connecting wall 45 is obliquely below and rearward with respect to the longitudinal direction of the track frame 21. A rear frame 46 extending in the direction is connected. The connecting wall 45 includes a bent piece 45A bent at the lower end side and an extended piece 45B extending to the inside of the machine body. The bent piece 45A is fixed to the upper surface of the track frame 21, and the rear frame 43 is fixed to the extended piece 45B. The lower ends of the are connected.

  Although not shown in the drawing, the driven wheel 25 is rotatably supported by a bearing (not shown) via a shaft body 27 supported at both ends by the rear frame 46 in the same manner as the tension wheel 24.

[Effect of the embodiment]
With such a configuration, the crawler traveling device C can swing around the swing shaft 36, and the limit of the swing is determined by the contact between the stopper piece 33S and the restriction opening 38A of the flange plate 38. The front frame 41, the center frame 42, and the rear frame 43 are displaced toward the center of the traveling machine A with respect to the track frame 21 with respect to the track frame 21. Since the frame unit CF is composed of the central frame 42 and the square pipe-shaped rear frame 43, the frame unit CF has a strong structure and forms a space that opens above the track frame 21. Yes.

  Since the tension wheel 24 is projected and urged obliquely downward by the urging force of the tension applying mechanism T, the adjustment portion 57B of the bolt 57 of the urging force adjusting means TC is directed obliquely upward. As a result, the adjusting portion 57B is separated from the upper surface of the track frame 21, a space is secured below the adjusting portion 57B, and the urging force of the compression coil spring 50 is artificially adjusted so that mud or the like is difficult to adhere. In some cases, a tool such as a spanner can be easily made without contacting the track frame 21.

  Since the front frame 41 is displaced toward the center of the traveling machine body A with respect to the bolt 57 and the urging force adjusting means TC, the front frame 41 is separated from the adjusting portion 57B of the urging force adjusting means TC. Even when the urging force is artificially adjusted from the outside of the crawler traveling device C, a tool such as a spanner is not required to contact the front frame 41.

  Openings 53A and 54A are formed on the side surface of the support cylinder body 53 and the side surface of the guide cylinder body 54, the position of the pressing body 57A is confirmed through these openings 53A and 54A, and the indicator 53B of the opening 53A The biasing force of the compression coil spring 50 can be confirmed from the relative distance from the reference portion 54B of the opening 54A and an appropriate biasing force can be applied to the crawler belt 26.

  INDUSTRIAL APPLICABILITY The present invention can be used for a crawler traveling device provided in a traveling machine body other than a tractor.

21 Track frame 22 Drive wheel 23 Grounding wheel 24 Tension wheel 26 Crawler belt 41 Support frame (front frame)
50 urging means / compression coil spring 52 pressure receiving wall 53 support cylinder 53A opening 54 guide cylinder 54A opening 55 support wall 55A extension part (lower extension part)
56 Female thread (fixing nut)
57 Male thread member (bolt)
57A Pressing body 57B Adjusting part S Open space T Tension applying mechanism TC Energizing force adjusting means TG Guide means

Claims (5)

A crawler belt is wound around a driving wheel that is rotated by a driving force, a plurality of ground rollers provided in a track frame that is long in the front-rear direction, and a tension wheel that is disposed at one end of the track frame. A crawler traveling device being rotated,
A tension applying mechanism for projecting and urging the tension ring; guide means provided on an upper surface of the track frame for guiding the tension ring in a guide direction obliquely below the longitudinal direction of the track frame; and the tension An adjustment section for urging the wheel in the guide direction and an urging force adjusting means for adjusting the urging force of the urging means, and for adjusting the urging force artificially by the urging force adjusting means. Is formed to project along the guide direction from the end opposite to the tension ring in the guide means,
A crawler traveling device in which a support frame that supports an end portion of the track frame on which the tension applying mechanism is disposed is provided to be deviated toward the center of the traveling machine body with respect to the tension applying mechanism. The guide means includes a support cylinder that supports the tension ring, and a guide cylinder that is slidably and internally fitted to the support cylinder,
A supporting wall for supporting the biasing force adjusting means is formed on the opposite side of the guide wheel from the tension ring, and the supporting wall includes an extending portion extending downward, and the extending portion is The guide cylinder is supported by the track frame in an inclined posture by fixing to the upper surface of the track frame and fixing the end side of the guide cylinder where the tension ring is disposed to the upper surface of the track frame. The crawler traveling device according to claim 1. The biasing force adjusting means includes a male screw member that passes through the support wall in the guide direction in a threaded state with a female screw portion formed on the support wall, and a pressing body on the tension wheel side of the male screw member The adjustment portion is formed on the opposite side of the male thread member from the tension ring,
A pressure receiving wall is formed inside the support cylinder,
The crawler traveling device according to claim 2, wherein the urging means is configured by a compression coil spring disposed between the pressing body and the pressure receiving wall.   The crawler traveling device according to claim 3, wherein openings that allow the pressing body to be visually recognized are formed in a side wall of the support cylinder and a side wall of the guide cylinder. The guide means includes a support cylinder that supports the tension ring, and a guide cylinder that is slidably and internally fitted to the support cylinder.
The guide cylinder is supported by the track frame in an inclined posture in a state where an open space is formed between the lower surface of the guide cylinder and the upper surface of the track frame so as to open outward in the traveling machine. The crawler traveling apparatus as described in any one of 1-4.

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